From: Christopher Faulet Date: Tue, 16 Jul 2019 12:16:10 +0000 (+0200) Subject: MAJOR: http: Remove the HTTP legacy code X-Git-Tag: v2.1-dev2~353 X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=711ed6ae4a77197f0d9b375d06ad158c063ff643;p=thirdparty%2Fhaproxy.git MAJOR: http: Remove the HTTP legacy code First of all, all legacy HTTP analyzers and all functions exclusively used by them were removed. So the most of the functions in proto_http.{c,h} were removed. Only functions to deal with the HTTP transaction have been kept. Then, http_msg and hdr_idx modules were entirely removed. And finally the structure http_msg was lightened of all its useless information about the legacy HTTP. The structure hdr_ctx was also removed because unused now, just like unused states in the enum h1_state. Note that the memory pool "hdr_idx" was removed and "http_txn" is now smaller. --- diff --git a/Makefile b/Makefile index 54d345f08a..950cee58e4 100644 --- a/Makefile +++ b/Makefile @@ -774,8 +774,8 @@ OBJS = src/proto_http.o src/cfgparse-listen.o src/proto_htx.o src/stream.o \ src/http_htx.o src/buffer.o src/hpack-tbl.o src/shctx.o src/sha1.o \ src/http.o src/hpack-dec.o src/action.o src/proto_udp.o src/http_acl.o \ src/xxhash.o src/hpack-enc.o src/h2.o src/freq_ctr.o src/lru.o \ - src/protocol.o src/arg.o src/hpack-huff.o src/hdr_idx.o src/base64.o \ - src/hash.o src/mailers.o src/activity.o src/http_msg.o src/version.o \ + src/protocol.o src/arg.o src/hpack-huff.o src/base64.o \ + src/hash.o src/mailers.o src/activity.o src/version.o \ src/mworker.o src/mworker-prog.o src/debug.o src/wdt.o src/dict.o \ src/xprt_handshake.o diff --git a/contrib/modsecurity/modsec_wrapper.c b/contrib/modsecurity/modsec_wrapper.c index 370682bcf1..a3a25414fc 100644 --- a/contrib/modsecurity/modsec_wrapper.c +++ b/contrib/modsecurity/modsec_wrapper.c @@ -22,10 +22,8 @@ #include #include -#include #include #include -#include #include #include diff --git a/include/proto/hdr_idx.h b/include/proto/hdr_idx.h deleted file mode 100644 index f65b3c6608..0000000000 --- a/include/proto/hdr_idx.h +++ /dev/null @@ -1,96 +0,0 @@ -/* - * include/proto/hdr_idx.h - * This file defines function prototypes for fast header indexation. - * - * Copyright (C) 2000-2011 Willy Tarreau - w@1wt.eu - * - * This library is free software; you can redistribute it and/or - * modify it under the terms of the GNU Lesser General Public - * License as published by the Free Software Foundation, version 2.1 - * exclusively. - * - * This library is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU - * Lesser General Public License for more details. - * - * You should have received a copy of the GNU Lesser General Public - * License along with this library; if not, write to the Free Software - * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA - */ - -#ifndef _PROTO_HDR_IDX_H -#define _PROTO_HDR_IDX_H - -#include -#include - -extern struct pool_head *pool_head_hdr_idx; - -/* - * Initialize the list pointers. - * list->size must already be set. If list->size is set and list->v is - * non-null, list->v is also initialized.. - */ -static inline void hdr_idx_init(struct hdr_idx *list) -{ - if (list->size && list->v) { - register struct hdr_idx_elem e = { .len=0, .cr=0, .next=0}; - list->v[0] = e; - } - list->tail = 0; - list->used = list->last = 1; -} - -/* - * Return index of the first entry in the list. Usually, it means the index of - * the first header just after the request or response. If zero is returned, it - * means that the list is empty. - */ -static inline int hdr_idx_first_idx(const struct hdr_idx *list) -{ - return list->v[0].next; -} - -/* - * Return position of the first entry in the list. Usually, it means the - * position of the first header just after the request, but it can also be the - * end of the headers if the request has no header. hdr_idx_start_idx() should - * be checked before to ensure there is a valid header. - */ -static inline int hdr_idx_first_pos(const struct hdr_idx *list) -{ - return list->v[0].len + list->v[0].cr + 1; -} - -/* - * Sets the information about the start line. Its length and the presence of - * the CR are registered so that hdr_idx_first_pos() knows exactly where to - * find the first header. - */ -static inline void hdr_idx_set_start(struct hdr_idx *list, int len, int cr) -{ - list->v[0].len = len; - list->v[0].cr = cr; -} - -/* - * Add a header entry to after element . is ignored when - * the list is empty or full. Common usage is to set to list->tail. - * - * Returns the position of the new entry in the list (from 1 to size-1), or 0 - * if the array is already full. An effort is made to fill the array linearly, - * but once the last entry has been used, we have to search for unused blocks, - * which takes much more time. For this reason, it's important to size is - * appropriately. - */ -int hdr_idx_add(int len, int cr, struct hdr_idx *list, int after); - -#endif /* _PROTO_HDR_IDX_H */ - -/* - * Local variables: - * c-indent-level: 8 - * c-basic-offset: 8 - * End: - */ diff --git a/include/proto/proto_http.h b/include/proto/proto_http.h index 8683e2625e..e360a5a409 100644 --- a/include/proto/proto_http.h +++ b/include/proto/proto_http.h @@ -23,6 +23,7 @@ #define _PROTO_PROTO_HTTP_H #include +#include #include #include #include @@ -31,43 +32,6 @@ extern struct pool_head *pool_head_uniqueid; -int process_cli(struct stream *s); -int process_srv_data(struct stream *s); -int process_srv_conn(struct stream *s); -int http_wait_for_request(struct stream *s, struct channel *req, int an_bit); -int http_process_req_common(struct stream *s, struct channel *req, int an_bit, struct proxy *px); -int http_process_request(struct stream *s, struct channel *req, int an_bit); -int http_process_tarpit(struct stream *s, struct channel *req, int an_bit); -int http_wait_for_request_body(struct stream *s, struct channel *req, int an_bit); -int http_send_name_header(struct stream *s, struct proxy* be, const char* svr_name); -int http_wait_for_response(struct stream *s, struct channel *rep, int an_bit); -int http_process_res_common(struct stream *s, struct channel *rep, int an_bit, struct proxy *px); -int http_request_forward_body(struct stream *s, struct channel *req, int an_bit); -int http_response_forward_body(struct stream *s, struct channel *res, int an_bit); -int http_upgrade_v09_to_v10(struct http_txn *txn); -void http_msg_analyzer(struct http_msg *msg, struct hdr_idx *idx); -void http_txn_reset_req(struct http_txn *txn); -void http_txn_reset_res(struct http_txn *txn); -const char *http_parse_reqline(struct http_msg *msg, - enum h1_state state, const char *ptr, const char *end, - unsigned int *ret_ptr, enum h1_state *ret_state); -const char *http_parse_stsline(struct http_msg *msg, - enum h1_state state, const char *ptr, const char *end, - unsigned int *ret_ptr, enum h1_state *ret_state); -int http_forward_trailers(struct http_msg *msg); -int http_legacy_replace_header(struct hdr_idx *idx, struct http_msg *msg, - const char *name, unsigned int name_len, - const char *str, struct my_regex *re, - struct buffer *output); -int http_legacy_replace_full_header(struct hdr_idx *idx, struct http_msg *msg, - const char *name, unsigned int name_len, - const char *str, struct my_regex *re, - struct buffer *output); - -/* Export HTX analyzers and helpers */ -// FIXME: Rename all these functions http_* once legacy code will be removed -struct htx; - int htx_wait_for_request(struct stream *s, struct channel *req, int an_bit); int htx_process_req_common(struct stream *s, struct channel *req, int an_bit, struct proxy *px); int htx_process_request(struct stream *s, struct channel *req, int an_bit); @@ -92,171 +56,20 @@ void htx_reply_and_close(struct stream *s, short status, struct buffer *msg); void htx_return_srv_error(struct stream *s, struct stream_interface *si); struct buffer *htx_error_message(struct stream *s); -void debug_hdr(const char *dir, struct stream *s, const char *start, const char *end); -int apply_filter_to_req_headers(struct stream *s, struct channel *req, struct hdr_exp *exp); -int apply_filter_to_req_line(struct stream *s, struct channel *req, struct hdr_exp *exp); -int apply_filters_to_request(struct stream *s, struct channel *req, struct proxy *px); -int apply_filters_to_response(struct stream *s, struct channel *rtr, struct proxy *px); -void manage_client_side_cookies(struct stream *s, struct channel *req); -void manage_server_side_cookies(struct stream *s, struct channel *rtr); -void check_request_for_cacheability(struct stream *s, struct channel *chn); -void check_response_for_cacheability(struct stream *s, struct channel *rtr); -int stats_check_uri(struct stream_interface *si, struct http_txn *txn, struct proxy *backend); -int http_find_full_header2(const char *name, int len, - char *sol, struct hdr_idx *idx, - struct hdr_ctx *ctx); -int http_find_header2(const char *name, int len, - char *sol, struct hdr_idx *idx, - struct hdr_ctx *ctx); -int http_find_next_header(char *sol, struct hdr_idx *idx, - struct hdr_ctx *ctx); -int http_remove_header2(struct http_msg *msg, struct hdr_idx *idx, struct hdr_ctx *ctx); -int http_header_add_tail2(struct http_msg *msg, struct hdr_idx *hdr_idx, const char *text, int len); -int http_replace_req_line(int action, const char *replace, int len, struct proxy *px, struct stream *s); -void http_set_status(unsigned int status, const char *reason, struct stream *s); -int http_transform_header_str(struct stream* s, struct http_msg *msg, const char* name, - unsigned int name_len, const char *str, struct my_regex *re, - int action); -int http_handle_stats(struct stream *s, struct channel *req); -enum rule_result http_req_get_intercept_rule(struct proxy *px, struct list *rules, - struct stream *s, int *deny_status); -enum rule_result http_res_get_intercept_rule(struct proxy *px, struct list *rules, - struct stream *s); -int http_apply_redirect_rule(struct redirect_rule *rule, struct stream *s, struct http_txn *txn); -void http_perform_server_redirect(struct stream *s, struct stream_interface *si); -void http_return_srv_error(struct stream *s, struct stream_interface *si); -void http_capture_headers(char *som, struct hdr_idx *idx, - char **cap, struct cap_hdr *cap_hdr); -void http_capture_bad_message(struct proxy *proxy, struct stream *s, - struct http_msg *msg, - enum h1_state state, struct proxy *other_end); -unsigned int http_get_hdr(const struct http_msg *msg, const char *hname, int hlen, - struct hdr_idx *idx, int occ, - struct hdr_ctx *ctx, char **vptr, size_t *vlen); -unsigned int http_get_fhdr(const struct http_msg *msg, const char *hname, int hlen, - struct hdr_idx *idx, int occ, - struct hdr_ctx *ctx, char **vptr, size_t *vlen); -char *http_txn_get_path(const struct http_txn *txn); - struct http_txn *http_alloc_txn(struct stream *s); void http_init_txn(struct stream *s); void http_end_txn(struct stream *s); void http_reset_txn(struct stream *s); -void http_end_txn_clean_session(struct stream *s); -void http_resync_states(struct stream *s); -void http_parse_connection_header(struct http_txn *txn, struct http_msg *msg, int to_del); -void http_change_connection_header(struct http_txn *txn, struct http_msg *msg, int wanted); -void http_adjust_conn_mode(struct stream *s, struct http_txn *txn, struct http_msg *msg); - -int http_msg_forward_body(struct stream *s, struct http_msg *msg); -int http_msg_forward_chunked_body(struct stream *s, struct http_msg *msg); - -void http_reply_and_close(struct stream *s, short status, struct buffer *msg); -struct buffer *http_error_message(struct stream *s); - -/* to be used when contents change in an HTTP message */ -#define http_msg_move_end(msg, bytes) do { \ - unsigned int _bytes = (bytes); \ - (msg)->next += (_bytes); \ - (msg)->sov += (_bytes); \ - (msg)->eoh += (_bytes); \ - } while (0) - - -/* Return the amount of bytes that need to be rewound before buf->p to access - * the current message's headers. The purpose is to be able to easily fetch - * the message's beginning before headers are forwarded, as well as after. - * The principle is that msg->eoh and msg->eol are immutable while msg->sov - * equals the sum of the two before forwarding and is zero after forwarding, - * so the difference cancels the rewinding. - */ -static inline int http_hdr_rewind(const struct http_msg *msg) -{ - return msg->eoh + msg->eol - msg->sov; -} - -/* Return the amount of bytes that need to be rewound before buf->p to access - * the current message's URI. The purpose is to be able to easily fetch - * the message's beginning before headers are forwarded, as well as after. - */ -static inline int http_uri_rewind(const struct http_msg *msg) -{ - return http_hdr_rewind(msg) - msg->sl.rq.u; -} - -/* Return the amount of bytes that need to be rewound before buf->p to access - * the current message's BODY. The purpose is to be able to easily fetch - * the message's beginning before headers are forwarded, as well as after. - */ -static inline int http_body_rewind(const struct http_msg *msg) -{ - return http_hdr_rewind(msg) - msg->eoh - msg->eol; -} - -/* Return the amount of bytes that need to be rewound before buf->p to access - * the current message's DATA. The difference with the function above is that - * if a chunk is present and has already been parsed, its size is skipped so - * that the byte pointed to is the first byte of actual data. The function is - * safe for use in state HTTP_MSG_DATA regardless of whether the headers were - * already forwarded or not. - */ -static inline int http_data_rewind(const struct http_msg *msg) -{ - return http_body_rewind(msg) - msg->sol; -} - -/* Return the maximum amount of bytes that may be read after the beginning of - * the message body, according to the advertised length. The function is safe - * for use between HTTP_MSG_BODY and HTTP_MSG_DATA regardless of whether the - * headers were already forwarded or not. - */ -static inline int http_body_bytes(const struct http_msg *msg) -{ - int len; - - len = ci_data(msg->chn) - msg->sov - msg->sol; - if (len > msg->body_len) - len = msg->body_len; - return len; -} /* for debugging, reports the HTTP/1 message state name (legacy version) */ static inline const char *h1_msg_state_str(enum h1_state msg_state) { switch (msg_state) { case HTTP_MSG_RQBEFORE: return "MSG_RQBEFORE"; - case HTTP_MSG_RQBEFORE_CR: return "MSG_RQBEFORE_CR"; - case HTTP_MSG_RQMETH: return "MSG_RQMETH"; - case HTTP_MSG_RQMETH_SP: return "MSG_RQMETH_SP"; - case HTTP_MSG_RQURI: return "MSG_RQURI"; - case HTTP_MSG_RQURI_SP: return "MSG_RQURI_SP"; - case HTTP_MSG_RQVER: return "MSG_RQVER"; - case HTTP_MSG_RQLINE_END: return "MSG_RQLINE_END"; case HTTP_MSG_RPBEFORE: return "MSG_RPBEFORE"; - case HTTP_MSG_RPBEFORE_CR: return "MSG_RPBEFORE_CR"; - case HTTP_MSG_RPVER: return "MSG_RPVER"; - case HTTP_MSG_RPVER_SP: return "MSG_RPVER_SP"; - case HTTP_MSG_RPCODE: return "MSG_RPCODE"; - case HTTP_MSG_RPCODE_SP: return "MSG_RPCODE_SP"; - case HTTP_MSG_RPREASON: return "MSG_RPREASON"; - case HTTP_MSG_RPLINE_END: return "MSG_RPLINE_END"; - case HTTP_MSG_HDR_FIRST: return "MSG_HDR_FIRST"; - case HTTP_MSG_HDR_NAME: return "MSG_HDR_NAME"; - case HTTP_MSG_HDR_COL: return "MSG_HDR_COL"; - case HTTP_MSG_HDR_L1_SP: return "MSG_HDR_L1_SP"; - case HTTP_MSG_HDR_L1_LF: return "MSG_HDR_L1_LF"; - case HTTP_MSG_HDR_L1_LWS: return "MSG_HDR_L1_LWS"; - case HTTP_MSG_HDR_VAL: return "MSG_HDR_VAL"; - case HTTP_MSG_HDR_L2_LF: return "MSG_HDR_L2_LF"; - case HTTP_MSG_HDR_L2_LWS: return "MSG_HDR_L2_LWS"; - case HTTP_MSG_LAST_LF: return "MSG_LAST_LF"; case HTTP_MSG_ERROR: return "MSG_ERROR"; case HTTP_MSG_BODY: return "MSG_BODY"; - case HTTP_MSG_100_SENT: return "MSG_100_SENT"; - case HTTP_MSG_CHUNK_SIZE: return "MSG_CHUNK_SIZE"; case HTTP_MSG_DATA: return "MSG_DATA"; - case HTTP_MSG_CHUNK_CRLF: return "MSG_CHUNK_CRLF"; - case HTTP_MSG_TRAILERS: return "MSG_TRAILERS"; case HTTP_MSG_ENDING: return "MSG_ENDING"; case HTTP_MSG_DONE: return "MSG_DONE"; case HTTP_MSG_CLOSING: return "MSG_CLOSING"; diff --git a/include/types/hdr_idx.h b/include/types/hdr_idx.h deleted file mode 100644 index 809ea83990..0000000000 --- a/include/types/hdr_idx.h +++ /dev/null @@ -1,84 +0,0 @@ -/* - include/types/hdr_idx.h - This file defines everything related to fast header indexation. - - Copyright (C) 2000-2006 Willy Tarreau - w@1wt.eu - - This library is free software; you can redistribute it and/or - modify it under the terms of the GNU Lesser General Public - License as published by the Free Software Foundation, version 2.1 - exclusively. - - This library is distributed in the hope that it will be useful, - but WITHOUT ANY WARRANTY; without even the implied warranty of - MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU - Lesser General Public License for more details. - - You should have received a copy of the GNU Lesser General Public - License along with this library; if not, write to the Free Software - Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA -*/ - - -/* - * The type of structure described here is a finite linked list used to - * reference small number of objects of small size. This is typically used - * to index HTTP headers within one request or response, in order to be able - * to add, remove, modify and check them in an efficient way. The overhead is - * very low : 32 bits are used per list element. This is enough to reference - * 32k headers of at most 64kB each, with one bit to indicate if the header - * is terminated by 1 or 2 chars. It may also evolve towards something like - * 1k headers of at most 64B for the name and 32kB of data + CR/CRLF. - * - * A future evolution of this concept may allow for fast header manipulation - * without data movement through the use of vectors. This is not yet possible - * in this version, whose goal is only to avoid parsing whole lines for each - * consultation. - * - */ - - -#ifndef _TYPES_HDR_IDX_H -#define _TYPES_HDR_IDX_H - -/* - * This describes one element of the hdr_idx array. - * It's a tiny linked list of at most 32k 32bit elements. The first one has a - * special meaning, it's used as the head of the list and cannod be removed. - * That way, we know that 'next==0' is not possible so we use it to indicate - * an end of list. Also, [0]->next always designates the head of the list. The - * first allocatable element is at 1. By convention, [0]->len indicates how - * many chars should be skipped in the original buffer before finding the first - * header. - * - */ - -struct hdr_idx_elem { - unsigned len :16; /* length of this header not counting CRLF. 0=unused entry. */ - unsigned cr : 1; /* CR present (1=CRLF, 0=LF). Total line size=len+cr+1. */ - unsigned next :15; /* offset of next header if len>0. 0=end of list. */ -}; - -/* - * This structure provides necessary information to store, find, remove - * index entries from a list. This list cannot reference more than 32k - * elements of 64k each. - */ -struct hdr_idx { - struct hdr_idx_elem *v; /* the array itself */ - short size; /* size of the array including the head */ - short used; /* # of elements really used (1..size) */ - short last; /* length of the allocated area (1..size) */ - signed short tail; /* last used element, 0..size-1 */ -}; - - - -#endif /* _TYPES_HDR_IDX_H */ - -/* - * Local variables: - * c-indent-level: 8 - * c-basic-offset: 8 - * End: - */ diff --git a/include/types/proto_http.h b/include/types/proto_http.h index d4fa652c10..205bd5f66a 100644 --- a/include/types/proto_http.h +++ b/include/types/proto_http.h @@ -29,7 +29,6 @@ #include #include -#include #include //#include @@ -188,110 +187,30 @@ enum rule_result { */ enum h1_state { HTTP_MSG_RQBEFORE = 0, // request: leading LF, before start line - HTTP_MSG_RQBEFORE_CR = 1, // request: leading CRLF, before start line - /* these ones define a request start line */ - HTTP_MSG_RQMETH = 2, // parsing the Method - HTTP_MSG_RQMETH_SP = 3, // space(s) after the Method - HTTP_MSG_RQURI = 4, // parsing the Request URI - HTTP_MSG_RQURI_SP = 5, // space(s) after the Request URI - HTTP_MSG_RQVER = 6, // parsing the Request Version - HTTP_MSG_RQLINE_END = 7, // end of request line (CR or LF) - - HTTP_MSG_RPBEFORE = 8, // response: leading LF, before start line - HTTP_MSG_RPBEFORE_CR = 9, // response: leading CRLF, before start line - - /* these ones define a response start line */ - HTTP_MSG_RPVER = 10, // parsing the Response Version - HTTP_MSG_RPVER_SP = 11, // space(s) after the Response Version - HTTP_MSG_RPCODE = 12, // response code - HTTP_MSG_RPCODE_SP = 13, // space(s) after the response code - HTTP_MSG_RPREASON = 14, // response reason - HTTP_MSG_RPLINE_END = 15, // end of response line (CR or LF) - - /* common header processing */ - HTTP_MSG_HDR_FIRST = 16, // waiting for first header or last CRLF (no LWS possible) - HTTP_MSG_HDR_NAME = 17, // parsing header name - HTTP_MSG_HDR_COL = 18, // parsing header colon - HTTP_MSG_HDR_L1_SP = 19, // parsing header LWS (SP|HT) before value - HTTP_MSG_HDR_L1_LF = 20, // parsing header LWS (LF) before value - HTTP_MSG_HDR_L1_LWS = 21, // checking whether it's a new header or an LWS - HTTP_MSG_HDR_VAL = 22, // parsing header value - HTTP_MSG_HDR_L2_LF = 23, // parsing header LWS (LF) inside/after value - HTTP_MSG_HDR_L2_LWS = 24, // checking whether it's a new header or an LWS - - HTTP_MSG_LAST_LF = 25, // parsing last LF + HTTP_MSG_RPBEFORE = 1, // response: leading LF, before start line /* error state : must be before HTTP_MSG_BODY so that (>=BODY) always indicates * that data are being processed. */ - HTTP_MSG_ERROR = 26, // an error occurred + HTTP_MSG_ERROR = 2, // an error occurred /* Body processing. * The state HTTP_MSG_BODY is a delimiter to know if we're waiting for headers * or body. All the sub-states below also indicate we're processing the body, * with some additional information. */ - HTTP_MSG_BODY = 27, // parsing body at end of headers - HTTP_MSG_100_SENT = 28, // parsing body after a 100-Continue was sent - HTTP_MSG_CHUNK_SIZE = 29, // parsing the chunk size (RFC7230 #4.1) - HTTP_MSG_DATA = 30, // skipping data chunk / content-length data - HTTP_MSG_CHUNK_CRLF = 31, // skipping CRLF after data chunk - HTTP_MSG_TRAILERS = 32, // trailers (post-data entity headers) + HTTP_MSG_BODY = 3, // parsing body at end of headers + HTTP_MSG_DATA = 4, // skipping data chunk / content-length data /* we enter this state when we've received the end of the current message */ - HTTP_MSG_ENDING = 33, // message end received, wait that the filters end too - HTTP_MSG_DONE = 34, // message end received, waiting for resync or close - HTTP_MSG_CLOSING = 35, // shutdown_w done, not all bytes sent yet - HTTP_MSG_CLOSED = 36, // shutdown_w done, all bytes sent - HTTP_MSG_TUNNEL = 37, // tunneled data after DONE + HTTP_MSG_ENDING = 5, // message end received, wait that the filters end too + HTTP_MSG_DONE = 6, // message end received, waiting for resync or close + HTTP_MSG_CLOSING = 7, // shutdown_w done, not all bytes sent yet + HTTP_MSG_CLOSED = 8, // shutdown_w done, all bytes sent + HTTP_MSG_TUNNEL = 9, // tunneled data after DONE } __attribute__((packed)); -/* This is an HTTP message, as described in RFC7230. It can be either a request - * message or a response message. - * - * The values there are a little bit obscure, because their meaning can change - * during the parsing. Please read carefully doc/internal/body-parsing.txt if - * you need to manipulate them. Quick reminder : - * - * - eoh (End of Headers) : relative offset in the buffer of first byte that - * is not part of a completely processed header. - * During parsing, it points to last header seen - * for states after START. When in HTTP_MSG_BODY, - * eoh points to the first byte of the last CRLF - * preceding data. Relative to buffer's origin. - * This value then remains unchanged till the end - * so that we can rewind the buffer to change some - * headers if needed (eg: http-send-name-header). - * - * - sov (start of value) : Before HTTP_MSG_BODY, points to the value of - * the header being parsed. Starting from - * HTTP_MSG_BODY, will point to the start of the - * body (relative to buffer's origin). It can be - * negative when forwarding data. It stops growing - * once data start to leave the buffer. - * - * - next (parse pointer) : next relative byte to be parsed. Always points - * to a byte matching the current state. - * - * - sol (start of line) : start of current line before MSG_BODY. Starting - * from MSG_BODY and until MSG_TRAILERS, contains - * the length of the last parsed chunk size so that - * when added to sov it always points to the - * beginning of the current data chunk. - * in MSG_TRAILERS state, it contains the length of - * the last parsed part of the trailer headers. - * - * - eol (End of Line) : Before HTTP_MSG_BODY, relative offset in the - * buffer of the first byte which marks the end of - * the line current (LF or CRLF). - * From HTTP_MSG_BODY to the end, contains the - * length of the last CRLF (1 for a plain LF, or 2 - * for a true CRLF). So eoh+eol always contain the - * exact size of the header size. - * - * Note that all offsets are relative to the origin of the buffer (buf->p) - * which always points to the beginning of the message (request or response). - * Since a message may not wrap, pointer computations may be one without any - * care for wrapping (no addition overflow nor subtract underflow). +/* This is the state of an HTTP seen from the analyzers point of view. It can be + * either a request message or a response message. */ struct http_msg { enum h1_state msg_state; /* where we are in the current message parsing */ @@ -299,39 +218,12 @@ struct http_msg { unsigned char flags; /* flags describing the message (HTTP version, ...) */ /* 5 bytes unused here */ struct channel *chn; /* pointer to the channel transporting the message */ - unsigned int next; /* pointer to next byte to parse, relative to buf->p */ - int sov; /* current header: start of value ; data: start of body */ - unsigned int eoh; /* End Of Headers, relative to buffer */ - unsigned int sol; /* start of current line during parsing otherwise zero */ - unsigned int eol; /* end of line */ - int err_pos; /* err handling: -2=block, -1=pass, 0+=detected */ - union { /* useful start line pointers, relative to ->sol */ - struct { - int l; /* request line length (not including CR) */ - int m_l; /* METHOD length (method starts at buf->p) */ - int u, u_l; /* URI, length */ - int v, v_l; /* VERSION, length */ - } rq; /* request line : field, length */ - struct { - int l; /* status line length (not including CR) */ - int v_l; /* VERSION length (version starts at buf->p) */ - int c, c_l; /* CODE, length */ - int r, r_l; /* REASON, length */ - } st; /* status line : field, length */ - } sl; /* start line */ - unsigned long long chunk_len; /* cache for last chunk size or content-length header value */ - unsigned long long body_len; /* total known length of the body, excluding encoding */ }; -struct proxy; -struct http_txn; -struct stream; - /* This is an HTTP transaction. It contains both a request message and a * response message (which can be empty). */ struct http_txn { - struct hdr_idx hdr_idx; /* array of header indexes (max: global.tune.max_http_hdr) */ struct http_msg rsp; /* HTTP response message */ struct http_msg req; /* HTTP request message */ unsigned int flags; /* transaction flags */ @@ -349,24 +241,6 @@ struct http_txn { struct http_auth_data auth; /* HTTP auth data */ }; - -/* This structure is used by http_find_header() to return values of headers. - * The header starts at , the value (excluding leading and trailing white - * spaces) at + for bytes, followed by optional trailing - * white spaces, and sets + to point to the last delimitor (colon or - * comma) before this value. points to the index of the header whose next - * is this one. - */ -struct hdr_ctx { - char *line; - int idx; - int val; /* relative to line, may skip some leading white spaces */ - int vlen; /* relative to line+val, stops before trailing white spaces */ - int tws; /* added to vlen if some trailing white spaces are present */ - int del; /* relative to line */ - int prev; /* index of previous header */ -}; - extern struct pool_head *pool_head_http_txn; #endif /* _TYPES_PROTO_HTTP_H */ diff --git a/include/types/sample.h b/include/types/sample.h index 015c5ae881..e5c2c29f53 100644 --- a/include/types/sample.h +++ b/include/types/sample.h @@ -133,7 +133,7 @@ enum { SMP_USE_TXFIN = 1 << SMP_SRC_TXFIN, /* final information about the transaction (eg: #comp rate) */ SMP_USE_SSFIN = 1 << SMP_SRC_SSFIN, /* final information about the stream (eg: #requests, final flags) */ - /* This composite one is useful to detect if an hdr_idx needs to be allocated */ + /* This composite one is useful to detect if an http_txn needs to be allocated */ SMP_USE_HTTP_ANY = SMP_USE_HRQHV | SMP_USE_HRQHP | SMP_USE_HRQBO | SMP_USE_HRSHV | SMP_USE_HRSHP | SMP_USE_HRSBO, }; diff --git a/src/cache.c b/src/cache.c index 162ec18f3d..032c9801e0 100644 --- a/src/cache.c +++ b/src/cache.c @@ -22,7 +22,6 @@ #include #include #include -#include #include #include #include diff --git a/src/cfgparse-listen.c b/src/cfgparse-listen.c index b3a8c8d3d0..9c266bd79b 100644 --- a/src/cfgparse-listen.c +++ b/src/cfgparse-listen.c @@ -1829,7 +1829,7 @@ int cfg_parse_listen(const char *file, int linenum, char **args, int kwm) } } - /* check if we need to allocate an hdr_idx struct for HTTP parsing */ + /* check if we need to allocate an http_txn struct for HTTP parsing */ curproxy->http_needed |= !!(expr->fetch->use & SMP_USE_HTTP_ANY); if (strcmp(args[myidx], "table") == 0) { diff --git a/src/cfgparse.c b/src/cfgparse.c index dd0b969119..11cb0c14e2 100644 --- a/src/cfgparse.c +++ b/src/cfgparse.c @@ -63,7 +63,6 @@ #include #include #include -#include #include #include #include @@ -4056,10 +4055,6 @@ out_uri_auth_compat: curproxy->server_state_file_name = strdup(curproxy->id); } - pool_head_hdr_idx = create_pool("hdr_idx", - global.tune.max_http_hdr * sizeof(struct hdr_idx_elem), - MEM_F_SHARED); - list_for_each_entry(curr_resolvers, &dns_resolvers, list) { if (LIST_ISEMPTY(&curr_resolvers->nameservers)) { ha_warning("config : resolvers '%s' [%s:%d] has no nameservers configured!\n", diff --git a/src/flt_http_comp.c b/src/flt_http_comp.c index e812b80032..446e3c379d 100644 --- a/src/flt_http_comp.c +++ b/src/flt_http_comp.c @@ -24,7 +24,6 @@ #include #include -#include #include #include #include diff --git a/src/flt_trace.c b/src/flt_trace.c index 653f9d2645..4d53bfc5dd 100644 --- a/src/flt_trace.c +++ b/src/flt_trace.c @@ -26,7 +26,6 @@ #include #include -#include #include #include #include diff --git a/src/frontend.c b/src/frontend.c index 7167257460..f560c16b48 100644 --- a/src/frontend.c +++ b/src/frontend.c @@ -38,7 +38,6 @@ #include #include #include -#include #include #include #include diff --git a/src/h1.c b/src/h1.c index d89bcb5f71..957abd5b81 100644 --- a/src/h1.c +++ b/src/h1.c @@ -16,7 +16,6 @@ #include #include -#include /* Parse the Content-Length header field of an HTTP/1 request. The function * checks all possible occurrences of a comma-delimited value, and verifies diff --git a/src/haproxy.c b/src/haproxy.c index f6f00fc1ac..e1b56e0838 100644 --- a/src/haproxy.c +++ b/src/haproxy.c @@ -108,7 +108,6 @@ #include #include #include -#include #include #include #include diff --git a/src/hdr_idx.c b/src/hdr_idx.c deleted file mode 100644 index b48ec64225..0000000000 --- a/src/hdr_idx.c +++ /dev/null @@ -1,72 +0,0 @@ -/* - * Header indexation functions. - * - * Copyright 2000-2011 Willy Tarreau - * - * This program is free software; you can redistribute it and/or - * modify it under the terms of the GNU General Public License - * as published by the Free Software Foundation; either version - * 2 of the License, or (at your option) any later version. - * - */ - -#include -#include -#include - -struct pool_head *pool_head_hdr_idx = NULL; - -/* - * Add a header entry to after element . is ignored when - * the list is empty or full. Common usage is to set to list->tail. - * - * Returns the position of the new entry in the list (from 1 to size-1), or 0 - * if the array is already full. An effort is made to fill the array linearly, - * but once the last entry has been used, we have to search for unused blocks, - * which takes much more time. For this reason, it's important to size is - * appropriately. - */ -int hdr_idx_add(int len, int cr, struct hdr_idx *list, int after) -{ - register struct hdr_idx_elem e = { .len=0, .cr=0, .next=0}; - int new; - - e.len = len; - e.cr = cr; - - if (list->used == list->size) { - /* list is full */ - return -1; - } - - - if (list->last < list->size) { - /* list is not completely used, we can fill linearly */ - new = list->last++; - } else { - /* That's the worst situation : - * we have to scan the list for holes. We know that we - * will find a place because the list is not full. - */ - new = 1; - while (list->v[new].len) - new++; - } - - /* insert the new element between and the next one (or end) */ - e.next = list->v[after].next; - list->v[after].next = new; - - list->used++; - list->v[new] = e; - list->tail = new; - return new; -} - - -/* - * Local variables: - * c-indent-level: 8 - * c-basic-offset: 8 - * End: - */ diff --git a/src/hlua.c b/src/hlua.c index c1cf83c459..8c9b2b161e 100644 --- a/src/hlua.c +++ b/src/hlua.c @@ -42,7 +42,6 @@ #include #include #include -#include #include #include #include diff --git a/src/http_fetch.c b/src/http_fetch.c index 0f9c5d6c8d..c2dd9b5f13 100644 --- a/src/http_fetch.c +++ b/src/http_fetch.c @@ -33,7 +33,6 @@ #include #include -#include #include #include #include @@ -1332,7 +1331,7 @@ static int smp_fetch_capture_req_ver(const struct arg *args, struct sample *smp, { struct http_txn *txn = smp->strm->txn; - if (!txn || txn->req.msg_state < HTTP_MSG_HDR_FIRST) + if (!txn || txn->req.msg_state >= HTTP_MSG_BODY) return 0; if (txn->req.flags & HTTP_MSGF_VER_11) @@ -1354,7 +1353,7 @@ static int smp_fetch_capture_res_ver(const struct arg *args, struct sample *smp, { struct http_txn *txn = smp->strm->txn; - if (!txn || txn->rsp.msg_state < HTTP_MSG_HDR_FIRST) + if (!txn || txn->rsp.msg_state >= HTTP_MSG_BODY) return 0; if (txn->rsp.flags & HTTP_MSGF_VER_11) diff --git a/src/http_msg.c b/src/http_msg.c deleted file mode 100644 index 067a7f863d..0000000000 --- a/src/http_msg.c +++ /dev/null @@ -1,1240 +0,0 @@ -/* - * Legacy HTTP protocol manipulation - * If you think you need something from this file, you're mistaken as it will - * soon be removed. Please check http_htx.c instead! - * - * Copyright 2000-2011 Willy Tarreau - * - * This program is free software; you can redistribute it and/or - * modify it under the terms of the GNU General Public License - * as published by the Free Software Foundation; either version - * 2 of the License, or (at your option) any later version. - * - */ -#include -#include -#include - -/* - * Adds a header and its CRLF at the tail of the message's buffer, just before - * the last CRLF. bytes are copied, not counting the CRLF. - * The header is also automatically added to the index , and the end - * of headers is automatically adjusted. The number of bytes added is returned - * on success, otherwise <0 is returned indicating an error. - */ -int http_header_add_tail2(struct http_msg *msg, - struct hdr_idx *hdr_idx, const char *text, int len) -{ - int bytes; - - bytes = ci_insert_line2(msg->chn, msg->eoh, text, len); - if (!bytes) - return -1; - http_msg_move_end(msg, bytes); - return hdr_idx_add(len, 1, hdr_idx, hdr_idx->tail); -} - -/* Find the first or next occurrence of header in message buffer - * using headers index , and return it in the structure. This - * structure holds everything necessary to use the header and find next - * occurrence. If its member is 0, the header is searched from the - * beginning. Otherwise, the next occurrence is returned. The function returns - * 1 when it finds a value, and 0 when there is no more. It is very similar to - * http_find_header2() except that it is designed to work with full-line headers - * whose comma is not a delimiter but is part of the syntax. As a special case, - * if ctx->val is NULL when searching for a new values of a header, the current - * header is rescanned. This allows rescanning after a header deletion. - */ -int http_find_full_header2(const char *name, int len, - char *sol, struct hdr_idx *idx, - struct hdr_ctx *ctx) -{ - char *eol, *sov; - int cur_idx, old_idx; - - cur_idx = ctx->idx; - if (cur_idx) { - /* We have previously returned a header, let's search another one */ - sol = ctx->line; - eol = sol + idx->v[cur_idx].len; - goto next_hdr; - } - - /* first request for this header */ - sol += hdr_idx_first_pos(idx); - old_idx = 0; - cur_idx = hdr_idx_first_idx(idx); - while (cur_idx) { - eol = sol + idx->v[cur_idx].len; - - if (len == 0) { - /* No argument was passed, we want any header. - * To achieve this, we simply build a fake request. */ - while (sol + len < eol && sol[len] != ':') - len++; - name = sol; - } - - if ((len < eol - sol) && - (sol[len] == ':') && - (strncasecmp(sol, name, len) == 0)) { - ctx->del = len; - sov = sol + len + 1; - while (sov < eol && HTTP_IS_LWS(*sov)) - sov++; - - ctx->line = sol; - ctx->prev = old_idx; - ctx->idx = cur_idx; - ctx->val = sov - sol; - ctx->tws = 0; - while (eol > sov && HTTP_IS_LWS(*(eol - 1))) { - eol--; - ctx->tws++; - } - ctx->vlen = eol - sov; - return 1; - } - next_hdr: - sol = eol + idx->v[cur_idx].cr + 1; - old_idx = cur_idx; - cur_idx = idx->v[cur_idx].next; - } - return 0; -} - -/* Find the first or next header field in message buffer using headers - * index , and return it in the structure. This structure holds - * everything necessary to use the header and find next occurrence. If its - * member is 0, the first header is retrieved. Otherwise, the next - * occurrence is returned. The function returns 1 when it finds a value, and - * 0 when there is no more. It is equivalent to http_find_full_header2() with - * no header name. - */ -int http_find_next_header(char *sol, struct hdr_idx *idx, struct hdr_ctx *ctx) -{ - char *eol, *sov; - int cur_idx, old_idx; - int len; - - cur_idx = ctx->idx; - if (cur_idx) { - /* We have previously returned a header, let's search another one */ - sol = ctx->line; - eol = sol + idx->v[cur_idx].len; - goto next_hdr; - } - - /* first request for this header */ - sol += hdr_idx_first_pos(idx); - old_idx = 0; - cur_idx = hdr_idx_first_idx(idx); - while (cur_idx) { - eol = sol + idx->v[cur_idx].len; - - len = 0; - while (1) { - if (len >= eol - sol) - goto next_hdr; - if (sol[len] == ':') - break; - len++; - } - - ctx->del = len; - sov = sol + len + 1; - while (sov < eol && HTTP_IS_LWS(*sov)) - sov++; - - ctx->line = sol; - ctx->prev = old_idx; - ctx->idx = cur_idx; - ctx->val = sov - sol; - ctx->tws = 0; - - while (eol > sov && HTTP_IS_LWS(*(eol - 1))) { - eol--; - ctx->tws++; - } - ctx->vlen = eol - sov; - return 1; - - next_hdr: - sol = eol + idx->v[cur_idx].cr + 1; - old_idx = cur_idx; - cur_idx = idx->v[cur_idx].next; - } - return 0; -} - -/* Find the first or next occurrence of header in message buffer - * using headers index , and return it in the structure. This - * structure holds everything necessary to use the header and find next - * occurrence. If its member is 0, the header is searched from the - * beginning. Otherwise, the next occurrence is returned. The function returns - * 1 when it finds a value, and 0 when there is no more. It is designed to work - * with headers defined as comma-separated lists. As a special case, if ctx->val - * is NULL when searching for a new values of a header, the current header is - * rescanned. This allows rescanning after a header deletion. - */ -int http_find_header2(const char *name, int len, - char *sol, struct hdr_idx *idx, - struct hdr_ctx *ctx) -{ - char *eol, *sov; - int cur_idx, old_idx; - - cur_idx = ctx->idx; - if (cur_idx) { - /* We have previously returned a value, let's search - * another one on the same line. - */ - sol = ctx->line; - ctx->del = ctx->val + ctx->vlen + ctx->tws; - sov = sol + ctx->del; - eol = sol + idx->v[cur_idx].len; - - if (sov >= eol) - /* no more values in this header */ - goto next_hdr; - - /* values remaining for this header, skip the comma but save it - * for later use (eg: for header deletion). - */ - sov++; - while (sov < eol && HTTP_IS_LWS((*sov))) - sov++; - - goto return_hdr; - } - - /* first request for this header */ - sol += hdr_idx_first_pos(idx); - old_idx = 0; - cur_idx = hdr_idx_first_idx(idx); - while (cur_idx) { - eol = sol + idx->v[cur_idx].len; - - if (len == 0) { - /* No argument was passed, we want any header. - * To achieve this, we simply build a fake request. */ - while (sol + len < eol && sol[len] != ':') - len++; - name = sol; - } - - if ((len < eol - sol) && - (sol[len] == ':') && - (strncasecmp(sol, name, len) == 0)) { - ctx->del = len; - sov = sol + len + 1; - while (sov < eol && HTTP_IS_LWS(*sov)) - sov++; - - ctx->line = sol; - ctx->prev = old_idx; - return_hdr: - ctx->idx = cur_idx; - ctx->val = sov - sol; - - eol = http_find_hdr_value_end(sov, eol); - ctx->tws = 0; - while (eol > sov && HTTP_IS_LWS(*(eol - 1))) { - eol--; - ctx->tws++; - } - ctx->vlen = eol - sov; - return 1; - } - next_hdr: - sol = eol + idx->v[cur_idx].cr + 1; - old_idx = cur_idx; - cur_idx = idx->v[cur_idx].next; - } - return 0; -} - -/* Remove one value of a header. This only works on a returned by one of - * the http_find_header functions. The value is removed, as well as surrounding - * commas if any. If the removed value was alone, the whole header is removed. - * The ctx is always updated accordingly, as well as the buffer and HTTP - * message . The new index is returned. If it is zero, it means there is - * no more header, so any processing may stop. The ctx is always left in a form - * that can be handled by http_find_header2() to find next occurrence. - */ -int http_remove_header2(struct http_msg *msg, struct hdr_idx *idx, struct hdr_ctx *ctx) -{ - int cur_idx = ctx->idx; - char *sol = ctx->line; - struct hdr_idx_elem *hdr; - int delta, skip_comma; - - if (!cur_idx) - return 0; - - hdr = &idx->v[cur_idx]; - if (sol[ctx->del] == ':' && ctx->val + ctx->vlen + ctx->tws == hdr->len) { - /* This was the only value of the header, we must now remove it entirely. */ - delta = b_rep_blk(&msg->chn->buf, sol, sol + hdr->len + hdr->cr + 1, NULL, 0); - http_msg_move_end(msg, delta); - idx->used--; - hdr->len = 0; /* unused entry */ - idx->v[ctx->prev].next = idx->v[ctx->idx].next; - if (idx->tail == ctx->idx) - idx->tail = ctx->prev; - ctx->idx = ctx->prev; /* walk back to the end of previous header */ - ctx->line -= idx->v[ctx->idx].len + idx->v[ctx->idx].cr + 1; - ctx->val = idx->v[ctx->idx].len; /* point to end of previous header */ - ctx->tws = ctx->vlen = 0; - return ctx->idx; - } - - /* This was not the only value of this header. We have to remove between - * ctx->del+1 and ctx->val+ctx->vlen+ctx->tws+1 included. If it is the - * last entry of the list, we remove the last separator. - */ - - skip_comma = (ctx->val + ctx->vlen + ctx->tws == hdr->len) ? 0 : 1; - delta = b_rep_blk(&msg->chn->buf, sol + ctx->del + skip_comma, - sol + ctx->val + ctx->vlen + ctx->tws + skip_comma, - NULL, 0); - hdr->len += delta; - http_msg_move_end(msg, delta); - ctx->val = ctx->del; - ctx->tws = ctx->vlen = 0; - return ctx->idx; -} - -int http_legacy_replace_header(struct hdr_idx *idx, struct http_msg *msg, - const char *name, unsigned int name_len, - const char *str, struct my_regex *re, - struct buffer *output) -{ - struct hdr_ctx ctx; - char *buf = ci_head(msg->chn); - - ctx.idx = 0; - while (http_find_header2(name, name_len, buf, idx, &ctx)) { - struct hdr_idx_elem *hdr = idx->v + ctx.idx; - int delta, len; - char *val = ctx.line + ctx.val; - char* val_end = val + ctx.vlen; - - if (!regex_exec_match2(re, val, val_end-val, MAX_MATCH, pmatch, 0)) - continue; - - len = exp_replace(output->area, output->size, val, str, pmatch); - if (len == -1) - return -1; - - delta = b_rep_blk(&msg->chn->buf, val, val_end, output->area, len); - - hdr->len += delta; - http_msg_move_end(msg, delta); - - /* Adjust the length of the current value of the index. */ - ctx.vlen += delta; - } - return 0; -} - -int http_legacy_replace_full_header(struct hdr_idx *idx, struct http_msg *msg, - const char *name, unsigned int name_len, - const char *str, struct my_regex *re, - struct buffer *output) -{ - struct hdr_ctx ctx; - char *buf = ci_head(msg->chn); - - ctx.idx = 0; - while (http_find_full_header2(name, name_len, buf, idx, &ctx)) { - struct hdr_idx_elem *hdr = idx->v + ctx.idx; - int delta, len; - char *val = ctx.line + ctx.val; - char* val_end = val + ctx.vlen; - - if (!regex_exec_match2(re, val, val_end-val, MAX_MATCH, pmatch, 0)) - continue; - - len = exp_replace(output->area, output->size, val, str, pmatch); - if (len == -1) - return -1; - - delta = b_rep_blk(&msg->chn->buf, val, val_end, output->area, len); - - hdr->len += delta; - http_msg_move_end(msg, delta); - - /* Adjust the length of the current value of the index. */ - ctx.vlen += delta; - } - return 0; -} - -/* Return in and the pointer and length of occurrence of - * header whose name is of length . If is null, lookup is - * performed over the whole headers. Otherwise it must contain a valid header - * context, initialised with ctx->idx=0 for the first lookup in a series. If - * is positive or null, occurrence #occ from the beginning (or last ctx) - * is returned. Occ #0 and #1 are equivalent. If is negative (and no less - * than -MAX_HDR_HISTORY), the occurrence is counted from the last one which is - * -1. The value fetch stops at commas, so this function is suited for use with - * list headers. - * The return value is 0 if nothing was found, or non-zero otherwise. - */ -unsigned int http_get_hdr(const struct http_msg *msg, const char *hname, int hlen, - struct hdr_idx *idx, int occ, - struct hdr_ctx *ctx, char **vptr, size_t *vlen) -{ - struct hdr_ctx local_ctx; - char *ptr_hist[MAX_HDR_HISTORY]; - unsigned int len_hist[MAX_HDR_HISTORY]; - unsigned int hist_ptr; - int found; - - if (!ctx) { - local_ctx.idx = 0; - ctx = &local_ctx; - } - - if (occ >= 0) { - /* search from the beginning */ - while (http_find_header2(hname, hlen, ci_head(msg->chn), idx, ctx)) { - occ--; - if (occ <= 0) { - *vptr = ctx->line + ctx->val; - *vlen = ctx->vlen; - return 1; - } - } - return 0; - } - - /* negative occurrence, we scan all the list then walk back */ - if (-occ > MAX_HDR_HISTORY) - return 0; - - found = hist_ptr = 0; - while (http_find_header2(hname, hlen, ci_head(msg->chn), idx, ctx)) { - ptr_hist[hist_ptr] = ctx->line + ctx->val; - len_hist[hist_ptr] = ctx->vlen; - if (++hist_ptr >= MAX_HDR_HISTORY) - hist_ptr = 0; - found++; - } - if (-occ > found) - return 0; - /* OK now we have the last occurrence in [hist_ptr-1], and we need to - * find occurrence -occ. 0 <= hist_ptr < MAX_HDR_HISTORY, and we have - * -10 <= occ <= -1. So we have to check [hist_ptr%MAX_HDR_HISTORY+occ] - * to remain in the 0..9 range. - */ - hist_ptr += occ + MAX_HDR_HISTORY; - if (hist_ptr >= MAX_HDR_HISTORY) - hist_ptr -= MAX_HDR_HISTORY; - *vptr = ptr_hist[hist_ptr]; - *vlen = len_hist[hist_ptr]; - return 1; -} - -/* Return in and the pointer and length of occurrence of - * header whose name is of length . If is null, lookup is - * performed over the whole headers. Otherwise it must contain a valid header - * context, initialised with ctx->idx=0 for the first lookup in a series. If - * is positive or null, occurrence #occ from the beginning (or last ctx) - * is returned. Occ #0 and #1 are equivalent. If is negative (and no less - * than -MAX_HDR_HISTORY), the occurrence is counted from the last one which is - * -1. This function differs from http_get_hdr() in that it only returns full - * line header values and does not stop at commas. - * The return value is 0 if nothing was found, or non-zero otherwise. - */ -unsigned int http_get_fhdr(const struct http_msg *msg, const char *hname, int hlen, - struct hdr_idx *idx, int occ, - struct hdr_ctx *ctx, char **vptr, size_t *vlen) -{ - struct hdr_ctx local_ctx; - char *ptr_hist[MAX_HDR_HISTORY]; - unsigned int len_hist[MAX_HDR_HISTORY]; - unsigned int hist_ptr; - int found; - - if (!ctx) { - local_ctx.idx = 0; - ctx = &local_ctx; - } - - if (occ >= 0) { - /* search from the beginning */ - while (http_find_full_header2(hname, hlen, ci_head(msg->chn), idx, ctx)) { - occ--; - if (occ <= 0) { - *vptr = ctx->line + ctx->val; - *vlen = ctx->vlen; - return 1; - } - } - return 0; - } - - /* negative occurrence, we scan all the list then walk back */ - if (-occ > MAX_HDR_HISTORY) - return 0; - - found = hist_ptr = 0; - while (http_find_full_header2(hname, hlen, ci_head(msg->chn), idx, ctx)) { - ptr_hist[hist_ptr] = ctx->line + ctx->val; - len_hist[hist_ptr] = ctx->vlen; - if (++hist_ptr >= MAX_HDR_HISTORY) - hist_ptr = 0; - found++; - } - if (-occ > found) - return 0; - - /* OK now we have the last occurrence in [hist_ptr-1], and we need to - * find occurrence -occ. 0 <= hist_ptr < MAX_HDR_HISTORY, and we have - * -10 <= occ <= -1. So we have to check [hist_ptr%MAX_HDR_HISTORY+occ] - * to remain in the 0..9 range. - */ - hist_ptr += occ + MAX_HDR_HISTORY; - if (hist_ptr >= MAX_HDR_HISTORY) - hist_ptr -= MAX_HDR_HISTORY; - *vptr = ptr_hist[hist_ptr]; - *vlen = len_hist[hist_ptr]; - return 1; -} - -/* Macros used in the HTTP/1 parser, to check for the expected presence of - * certain bytes (ef: LF) or to skip to next byte and yield in case of failure. - */ - -/* Expects to find an LF at . If not, set to and jump to - * . - */ -#define EXPECT_LF_HERE(ptr, bad, state, where) \ - do { \ - if (unlikely(*(ptr) != '\n')) { \ - state = (where); \ - goto bad; \ - } \ - } while (0) - -/* Increments pointer , continues to label if it's still below - * pointer , or goes to and sets to if the end - * of buffer was reached. - */ -#define EAT_AND_JUMP_OR_RETURN(ptr, end, more, stop, state, where) \ - do { \ - if (likely(++(ptr) < (end))) \ - goto more; \ - else { \ - state = (where); \ - goto stop; \ - } \ - } while (0) - -/* - * This function parses a status line between and , starting with - * parser state . Only states HTTP_MSG_RPVER, HTTP_MSG_RPVER_SP, - * HTTP_MSG_RPCODE, HTTP_MSG_RPCODE_SP and HTTP_MSG_RPREASON are handled. Others - * will give undefined results. - * Note that it is upon the caller's responsibility to ensure that ptr < end, - * and that msg->sol points to the beginning of the response. - * If a complete line is found (which implies that at least one CR or LF is - * found before , the updated is returned, otherwise NULL is - * returned indicating an incomplete line (which does not mean that parts have - * not been updated). In the incomplete case, if or are - * non-NULL, they are fed with the new and values to be passed - * upon next call. - * - * This function was intentionally designed to be called from - * http_msg_analyzer() with the lowest overhead. It should integrate perfectly - * within its state machine and use the same macros, hence the need for same - * labels and variable names. Note that msg->sol is left unchanged. - */ -const char *http_parse_stsline(struct http_msg *msg, - enum h1_state state, const char *ptr, const char *end, - unsigned int *ret_ptr, enum h1_state *ret_state) -{ - const char *msg_start = ci_head(msg->chn); - - switch (state) { - case HTTP_MSG_RPVER: - http_msg_rpver: - if (likely(HTTP_IS_VER_TOKEN(*ptr))) - EAT_AND_JUMP_OR_RETURN(ptr, end, http_msg_rpver, http_msg_ood, state, HTTP_MSG_RPVER); - - if (likely(HTTP_IS_SPHT(*ptr))) { - msg->sl.st.v_l = ptr - msg_start; - EAT_AND_JUMP_OR_RETURN(ptr, end, http_msg_rpver_sp, http_msg_ood, state, HTTP_MSG_RPVER_SP); - } - msg->err_state = HTTP_MSG_RPVER; - state = HTTP_MSG_ERROR; - break; - - case HTTP_MSG_RPVER_SP: - http_msg_rpver_sp: - if (likely(!HTTP_IS_LWS(*ptr))) { - msg->sl.st.c = ptr - msg_start; - goto http_msg_rpcode; - } - if (likely(HTTP_IS_SPHT(*ptr))) - EAT_AND_JUMP_OR_RETURN(ptr, end, http_msg_rpver_sp, http_msg_ood, state, HTTP_MSG_RPVER_SP); - /* so it's a CR/LF, this is invalid */ - msg->err_state = HTTP_MSG_RPVER_SP; - state = HTTP_MSG_ERROR; - break; - - case HTTP_MSG_RPCODE: - http_msg_rpcode: - if (likely(!HTTP_IS_LWS(*ptr))) - EAT_AND_JUMP_OR_RETURN(ptr, end, http_msg_rpcode, http_msg_ood, state, HTTP_MSG_RPCODE); - - if (likely(HTTP_IS_SPHT(*ptr))) { - msg->sl.st.c_l = ptr - msg_start - msg->sl.st.c; - EAT_AND_JUMP_OR_RETURN(ptr, end, http_msg_rpcode_sp, http_msg_ood, state, HTTP_MSG_RPCODE_SP); - } - - /* so it's a CR/LF, so there is no reason phrase */ - msg->sl.st.c_l = ptr - msg_start - msg->sl.st.c; - http_msg_rsp_reason: - /* FIXME: should we support HTTP responses without any reason phrase ? */ - msg->sl.st.r = ptr - msg_start; - msg->sl.st.r_l = 0; - goto http_msg_rpline_eol; - - case HTTP_MSG_RPCODE_SP: - http_msg_rpcode_sp: - if (likely(!HTTP_IS_LWS(*ptr))) { - msg->sl.st.r = ptr - msg_start; - goto http_msg_rpreason; - } - if (likely(HTTP_IS_SPHT(*ptr))) - EAT_AND_JUMP_OR_RETURN(ptr, end, http_msg_rpcode_sp, http_msg_ood, state, HTTP_MSG_RPCODE_SP); - /* so it's a CR/LF, so there is no reason phrase */ - goto http_msg_rsp_reason; - - case HTTP_MSG_RPREASON: - http_msg_rpreason: - if (likely(!HTTP_IS_CRLF(*ptr))) - EAT_AND_JUMP_OR_RETURN(ptr, end, http_msg_rpreason, http_msg_ood, state, HTTP_MSG_RPREASON); - msg->sl.st.r_l = ptr - msg_start - msg->sl.st.r; - http_msg_rpline_eol: - /* We have seen the end of line. Note that we do not - * necessarily have the \n yet, but at least we know that we - * have EITHER \r OR \n, otherwise the response would not be - * complete. We can then record the response length and return - * to the caller which will be able to register it. - */ - msg->sl.st.l = ptr - msg_start - msg->sol; - return ptr; - - default: -#ifdef DEBUG_FULL - fprintf(stderr, "FIXME !!!! impossible state at %s:%d = %d\n", __FILE__, __LINE__, state); - exit(1); -#endif - ; - } - - http_msg_ood: - /* out of valid data */ - if (ret_state) - *ret_state = state; - if (ret_ptr) - *ret_ptr = ptr - msg_start; - return NULL; -} - -/* - * This function parses a request line between and , starting with - * parser state . Only states HTTP_MSG_RQMETH, HTTP_MSG_RQMETH_SP, - * HTTP_MSG_RQURI, HTTP_MSG_RQURI_SP and HTTP_MSG_RQVER are handled. Others - * will give undefined results. - * Note that it is upon the caller's responsibility to ensure that ptr < end, - * and that msg->sol points to the beginning of the request. - * If a complete line is found (which implies that at least one CR or LF is - * found before , the updated is returned, otherwise NULL is - * returned indicating an incomplete line (which does not mean that parts have - * not been updated). In the incomplete case, if or are - * non-NULL, they are fed with the new and values to be passed - * upon next call. - * - * This function was intentionally designed to be called from - * http_msg_analyzer() with the lowest overhead. It should integrate perfectly - * within its state machine and use the same macros, hence the need for same - * labels and variable names. Note that msg->sol is left unchanged. - */ -const char *http_parse_reqline(struct http_msg *msg, - enum h1_state state, const char *ptr, const char *end, - unsigned int *ret_ptr, enum h1_state *ret_state) -{ - const char *msg_start = ci_head(msg->chn); - - switch (state) { - case HTTP_MSG_RQMETH: - http_msg_rqmeth: - if (likely(HTTP_IS_TOKEN(*ptr))) - EAT_AND_JUMP_OR_RETURN(ptr, end, http_msg_rqmeth, http_msg_ood, state, HTTP_MSG_RQMETH); - - if (likely(HTTP_IS_SPHT(*ptr))) { - msg->sl.rq.m_l = ptr - msg_start; - EAT_AND_JUMP_OR_RETURN(ptr, end, http_msg_rqmeth_sp, http_msg_ood, state, HTTP_MSG_RQMETH_SP); - } - - if (likely(HTTP_IS_CRLF(*ptr))) { - /* HTTP 0.9 request */ - msg->sl.rq.m_l = ptr - msg_start; - http_msg_req09_uri: - msg->sl.rq.u = ptr - msg_start; - http_msg_req09_uri_e: - msg->sl.rq.u_l = ptr - msg_start - msg->sl.rq.u; - http_msg_req09_ver: - msg->sl.rq.v = ptr - msg_start; - msg->sl.rq.v_l = 0; - goto http_msg_rqline_eol; - } - msg->err_state = HTTP_MSG_RQMETH; - state = HTTP_MSG_ERROR; - break; - - case HTTP_MSG_RQMETH_SP: - http_msg_rqmeth_sp: - if (likely(!HTTP_IS_LWS(*ptr))) { - msg->sl.rq.u = ptr - msg_start; - goto http_msg_rquri; - } - if (likely(HTTP_IS_SPHT(*ptr))) - EAT_AND_JUMP_OR_RETURN(ptr, end, http_msg_rqmeth_sp, http_msg_ood, state, HTTP_MSG_RQMETH_SP); - /* so it's a CR/LF, meaning an HTTP 0.9 request */ - goto http_msg_req09_uri; - - case HTTP_MSG_RQURI: - http_msg_rquri: -#if defined(__x86_64__) || \ - defined(__i386__) || defined(__i486__) || defined(__i586__) || defined(__i686__) || \ - defined(__ARM_ARCH_7A__) - /* speedup: skip bytes not between 0x21 and 0x7e inclusive */ - while (ptr <= end - sizeof(int)) { - int x = *(int *)ptr - 0x21212121; - if (x & 0x80808080) - break; - - x -= 0x5e5e5e5e; - if (!(x & 0x80808080)) - break; - - ptr += sizeof(int); - } -#endif - if (ptr >= end) { - state = HTTP_MSG_RQURI; - goto http_msg_ood; - } - http_msg_rquri2: - if (likely((unsigned char)(*ptr - 33) <= 93)) /* 33 to 126 included */ - EAT_AND_JUMP_OR_RETURN(ptr, end, http_msg_rquri2, http_msg_ood, state, HTTP_MSG_RQURI); - - if (likely(HTTP_IS_SPHT(*ptr))) { - msg->sl.rq.u_l = ptr - msg_start - msg->sl.rq.u; - EAT_AND_JUMP_OR_RETURN(ptr, end, http_msg_rquri_sp, http_msg_ood, state, HTTP_MSG_RQURI_SP); - } - - if (likely((unsigned char)*ptr >= 128)) { - /* non-ASCII chars are forbidden unless option - * accept-invalid-http-request is enabled in the frontend. - * In any case, we capture the faulty char. - */ - if (msg->err_pos < -1) - goto invalid_char; - if (msg->err_pos == -1) - msg->err_pos = ptr - msg_start; - EAT_AND_JUMP_OR_RETURN(ptr, end, http_msg_rquri, http_msg_ood, state, HTTP_MSG_RQURI); - } - - if (likely(HTTP_IS_CRLF(*ptr))) { - /* so it's a CR/LF, meaning an HTTP 0.9 request */ - goto http_msg_req09_uri_e; - } - - /* OK forbidden chars, 0..31 or 127 */ - invalid_char: - msg->err_pos = ptr - msg_start; - msg->err_state = HTTP_MSG_RQURI; - state = HTTP_MSG_ERROR; - break; - - case HTTP_MSG_RQURI_SP: - http_msg_rquri_sp: - if (likely(!HTTP_IS_LWS(*ptr))) { - msg->sl.rq.v = ptr - msg_start; - goto http_msg_rqver; - } - if (likely(HTTP_IS_SPHT(*ptr))) - EAT_AND_JUMP_OR_RETURN(ptr, end, http_msg_rquri_sp, http_msg_ood, state, HTTP_MSG_RQURI_SP); - /* so it's a CR/LF, meaning an HTTP 0.9 request */ - goto http_msg_req09_ver; - - case HTTP_MSG_RQVER: - http_msg_rqver: - if (likely(HTTP_IS_VER_TOKEN(*ptr))) - EAT_AND_JUMP_OR_RETURN(ptr, end, http_msg_rqver, http_msg_ood, state, HTTP_MSG_RQVER); - - if (likely(HTTP_IS_CRLF(*ptr))) { - msg->sl.rq.v_l = ptr - msg_start - msg->sl.rq.v; - http_msg_rqline_eol: - /* We have seen the end of line. Note that we do not - * necessarily have the \n yet, but at least we know that we - * have EITHER \r OR \n, otherwise the request would not be - * complete. We can then record the request length and return - * to the caller which will be able to register it. - */ - msg->sl.rq.l = ptr - msg_start - msg->sol; - return ptr; - } - - /* neither an HTTP_VER token nor a CRLF */ - msg->err_state = HTTP_MSG_RQVER; - state = HTTP_MSG_ERROR; - break; - - default: -#ifdef DEBUG_FULL - fprintf(stderr, "FIXME !!!! impossible state at %s:%d = %d\n", __FILE__, __LINE__, state); - exit(1); -#endif - ; - } - - http_msg_ood: - /* out of valid data */ - if (ret_state) - *ret_state = state; - if (ret_ptr) - *ret_ptr = ptr - msg_start; - return NULL; -} - -/* - * This function parses an HTTP message, either a request or a response, - * depending on the initial msg->msg_state. The caller is responsible for - * ensuring that the message does not wrap. The function can be preempted - * everywhere when data are missing and recalled at the exact same location - * with no information loss. The message may even be realigned between two - * calls. The header index is re-initialized when switching from - * MSG_R[PQ]BEFORE to MSG_RPVER|MSG_RQMETH. It modifies msg->sol among other - * fields. Note that msg->sol will be initialized after completing the first - * state, so that none of the msg pointers has to be initialized prior to the - * first call. - */ -void http_msg_analyzer(struct http_msg *msg, struct hdr_idx *idx) -{ - enum h1_state state; /* updated only when leaving the FSM */ - register const char *ptr, *end; /* request pointers, to avoid dereferences */ - struct buffer *buf = &msg->chn->buf; - char *input = ci_head(msg->chn); - - state = msg->msg_state; - ptr = input + msg->next; - end = b_stop(buf); - - if (unlikely(ptr >= end)) - goto http_msg_ood; - - switch (state) { - /* - * First, states that are specific to the response only. - * We check them first so that request and headers are - * closer to each other (accessed more often). - */ - case HTTP_MSG_RPBEFORE: - http_msg_rpbefore: - if (likely(HTTP_IS_TOKEN(*ptr))) { - /* we have a start of message, but we have to check - * first if we need to remove some CRLF. We can only - * do this when o=0. - */ - if (unlikely(ptr != input)) { - if (co_data(msg->chn)) - goto http_msg_ood; - /* Remove empty leading lines, as recommended by RFC2616. */ - b_del(buf, ptr - input); - input = b_head(buf); - } - msg->sol = 0; - msg->sl.st.l = 0; /* used in debug mode */ - hdr_idx_init(idx); - state = HTTP_MSG_RPVER; - goto http_msg_rpver; - } - - if (unlikely(!HTTP_IS_CRLF(*ptr))) { - state = HTTP_MSG_RPBEFORE; - goto http_msg_invalid; - } - - if (unlikely(*ptr == '\n')) - EAT_AND_JUMP_OR_RETURN(ptr, end, http_msg_rpbefore, http_msg_ood, state, HTTP_MSG_RPBEFORE); - EAT_AND_JUMP_OR_RETURN(ptr, end, http_msg_rpbefore_cr, http_msg_ood, state, HTTP_MSG_RPBEFORE_CR); - /* stop here */ - - case HTTP_MSG_RPBEFORE_CR: - http_msg_rpbefore_cr: - EXPECT_LF_HERE(ptr, http_msg_invalid, state, HTTP_MSG_RPBEFORE_CR); - EAT_AND_JUMP_OR_RETURN(ptr, end, http_msg_rpbefore, http_msg_ood, state, HTTP_MSG_RPBEFORE); - /* stop here */ - - case HTTP_MSG_RPVER: - http_msg_rpver: - case HTTP_MSG_RPVER_SP: - case HTTP_MSG_RPCODE: - case HTTP_MSG_RPCODE_SP: - case HTTP_MSG_RPREASON: - ptr = (char *)http_parse_stsline(msg, - state, ptr, end, - &msg->next, &msg->msg_state); - if (unlikely(!ptr)) - return; - - /* we have a full response and we know that we have either a CR - * or an LF at . - */ - hdr_idx_set_start(idx, msg->sl.st.l, *ptr == '\r'); - - msg->sol = ptr - input; - if (likely(*ptr == '\r')) - EAT_AND_JUMP_OR_RETURN(ptr, end, http_msg_rpline_end, http_msg_ood, state, HTTP_MSG_RPLINE_END); - goto http_msg_rpline_end; - - case HTTP_MSG_RPLINE_END: - http_msg_rpline_end: - /* msg->sol must point to the first of CR or LF. */ - EXPECT_LF_HERE(ptr, http_msg_invalid, state, HTTP_MSG_RPLINE_END); - EAT_AND_JUMP_OR_RETURN(ptr, end, http_msg_hdr_first, http_msg_ood, state, HTTP_MSG_HDR_FIRST); - /* stop here */ - - /* - * Second, states that are specific to the request only - */ - case HTTP_MSG_RQBEFORE: - http_msg_rqbefore: - if (likely(HTTP_IS_TOKEN(*ptr))) { - /* we have a start of message, but we have to check - * first if we need to remove some CRLF. We can only - * do this when o=0. - */ - if (likely(ptr != input)) { - if (co_data(msg->chn)) - goto http_msg_ood; - /* Remove empty leading lines, as recommended by RFC2616. */ - b_del(buf, ptr - input); - input = b_head(buf); - } - msg->sol = 0; - msg->sl.rq.l = 0; /* used in debug mode */ - state = HTTP_MSG_RQMETH; - goto http_msg_rqmeth; - } - - if (unlikely(!HTTP_IS_CRLF(*ptr))) { - state = HTTP_MSG_RQBEFORE; - goto http_msg_invalid; - } - - if (unlikely(*ptr == '\n')) - EAT_AND_JUMP_OR_RETURN(ptr, end, http_msg_rqbefore, http_msg_ood, state, HTTP_MSG_RQBEFORE); - EAT_AND_JUMP_OR_RETURN(ptr, end, http_msg_rqbefore_cr, http_msg_ood, state, HTTP_MSG_RQBEFORE_CR); - /* stop here */ - - case HTTP_MSG_RQBEFORE_CR: - http_msg_rqbefore_cr: - EXPECT_LF_HERE(ptr, http_msg_invalid, state, HTTP_MSG_RQBEFORE_CR); - EAT_AND_JUMP_OR_RETURN(ptr, end, http_msg_rqbefore, http_msg_ood, state, HTTP_MSG_RQBEFORE); - /* stop here */ - - case HTTP_MSG_RQMETH: - http_msg_rqmeth: - case HTTP_MSG_RQMETH_SP: - case HTTP_MSG_RQURI: - case HTTP_MSG_RQURI_SP: - case HTTP_MSG_RQVER: - ptr = (char *)http_parse_reqline(msg, - state, ptr, end, - &msg->next, &msg->msg_state); - if (unlikely(!ptr)) - return; - - /* we have a full request and we know that we have either a CR - * or an LF at . - */ - hdr_idx_set_start(idx, msg->sl.rq.l, *ptr == '\r'); - - msg->sol = ptr - input; - if (likely(*ptr == '\r')) - EAT_AND_JUMP_OR_RETURN(ptr, end, http_msg_rqline_end, http_msg_ood, state, HTTP_MSG_RQLINE_END); - goto http_msg_rqline_end; - - case HTTP_MSG_RQLINE_END: - http_msg_rqline_end: - /* check for HTTP/0.9 request : no version information available. - * msg->sol must point to the first of CR or LF. - */ - if (unlikely(msg->sl.rq.v_l == 0)) - goto http_msg_last_lf; - - EXPECT_LF_HERE(ptr, http_msg_invalid, state, HTTP_MSG_RQLINE_END); - EAT_AND_JUMP_OR_RETURN(ptr, end, http_msg_hdr_first, http_msg_ood, state, HTTP_MSG_HDR_FIRST); - /* stop here */ - - /* - * Common states below - */ - case HTTP_MSG_HDR_FIRST: - http_msg_hdr_first: - msg->sol = ptr - input; - if (likely(!HTTP_IS_CRLF(*ptr))) { - goto http_msg_hdr_name; - } - - if (likely(*ptr == '\r')) - EAT_AND_JUMP_OR_RETURN(ptr, end, http_msg_last_lf, http_msg_ood, state, HTTP_MSG_LAST_LF); - goto http_msg_last_lf; - - case HTTP_MSG_HDR_NAME: - http_msg_hdr_name: - /* assumes msg->sol points to the first char */ - if (likely(HTTP_IS_TOKEN(*ptr))) - EAT_AND_JUMP_OR_RETURN(ptr, end, http_msg_hdr_name, http_msg_ood, state, HTTP_MSG_HDR_NAME); - - if (likely(*ptr == ':')) - EAT_AND_JUMP_OR_RETURN(ptr, end, http_msg_hdr_l1_sp, http_msg_ood, state, HTTP_MSG_HDR_L1_SP); - - if (likely(msg->err_pos < -1) || *ptr == '\n') { - state = HTTP_MSG_HDR_NAME; - goto http_msg_invalid; - } - - if (msg->err_pos == -1) /* capture error pointer */ - msg->err_pos = ptr - input; /* >= 0 now */ - - /* and we still accept this non-token character */ - EAT_AND_JUMP_OR_RETURN(ptr, end, http_msg_hdr_name, http_msg_ood, state, HTTP_MSG_HDR_NAME); - - case HTTP_MSG_HDR_L1_SP: - http_msg_hdr_l1_sp: - /* assumes msg->sol points to the first char */ - if (likely(HTTP_IS_SPHT(*ptr))) - EAT_AND_JUMP_OR_RETURN(ptr, end, http_msg_hdr_l1_sp, http_msg_ood, state, HTTP_MSG_HDR_L1_SP); - - /* header value can be basically anything except CR/LF */ - msg->sov = ptr - input; - - if (likely(!HTTP_IS_CRLF(*ptr))) { - goto http_msg_hdr_val; - } - - if (likely(*ptr == '\r')) - EAT_AND_JUMP_OR_RETURN(ptr, end, http_msg_hdr_l1_lf, http_msg_ood, state, HTTP_MSG_HDR_L1_LF); - goto http_msg_hdr_l1_lf; - - case HTTP_MSG_HDR_L1_LF: - http_msg_hdr_l1_lf: - EXPECT_LF_HERE(ptr, http_msg_invalid, state, HTTP_MSG_HDR_L1_LF); - EAT_AND_JUMP_OR_RETURN(ptr, end, http_msg_hdr_l1_lws, http_msg_ood, state, HTTP_MSG_HDR_L1_LWS); - - case HTTP_MSG_HDR_L1_LWS: - http_msg_hdr_l1_lws: - if (likely(HTTP_IS_SPHT(*ptr))) { - /* replace HT,CR,LF with spaces */ - for (; input + msg->sov < ptr; msg->sov++) - input[msg->sov] = ' '; - goto http_msg_hdr_l1_sp; - } - /* we had a header consisting only in spaces ! */ - msg->eol = msg->sov; - goto http_msg_complete_header; - - case HTTP_MSG_HDR_VAL: - http_msg_hdr_val: - /* assumes msg->sol points to the first char, and msg->sov - * points to the first character of the value. - */ - - /* speedup: we'll skip packs of 4 or 8 bytes not containing bytes 0x0D - * and lower. In fact since most of the time is spent in the loop, we - * also remove the sign bit test so that bytes 0x8e..0x0d break the - * loop, but we don't care since they're very rare in header values. - */ -#if defined(__x86_64__) - while (ptr <= end - sizeof(long)) { - if ((*(long *)ptr - 0x0e0e0e0e0e0e0e0eULL) & 0x8080808080808080ULL) - goto http_msg_hdr_val2; - ptr += sizeof(long); - } -#endif -#if defined(__x86_64__) || \ - defined(__i386__) || defined(__i486__) || defined(__i586__) || defined(__i686__) || \ - defined(__ARM_ARCH_7A__) - while (ptr <= end - sizeof(int)) { - if ((*(int*)ptr - 0x0e0e0e0e) & 0x80808080) - goto http_msg_hdr_val2; - ptr += sizeof(int); - } -#endif - if (ptr >= end) { - state = HTTP_MSG_HDR_VAL; - goto http_msg_ood; - } - http_msg_hdr_val2: - if (likely(!HTTP_IS_CRLF(*ptr))) - EAT_AND_JUMP_OR_RETURN(ptr, end, http_msg_hdr_val2, http_msg_ood, state, HTTP_MSG_HDR_VAL); - - msg->eol = ptr - input; - /* Note: we could also copy eol into ->eoh so that we have the - * real header end in case it ends with lots of LWS, but is this - * really needed ? - */ - if (likely(*ptr == '\r')) - EAT_AND_JUMP_OR_RETURN(ptr, end, http_msg_hdr_l2_lf, http_msg_ood, state, HTTP_MSG_HDR_L2_LF); - goto http_msg_hdr_l2_lf; - - case HTTP_MSG_HDR_L2_LF: - http_msg_hdr_l2_lf: - EXPECT_LF_HERE(ptr, http_msg_invalid, state, HTTP_MSG_HDR_L2_LF); - EAT_AND_JUMP_OR_RETURN(ptr, end, http_msg_hdr_l2_lws, http_msg_ood, state, HTTP_MSG_HDR_L2_LWS); - - case HTTP_MSG_HDR_L2_LWS: - http_msg_hdr_l2_lws: - if (unlikely(HTTP_IS_SPHT(*ptr))) { - /* LWS: replace HT,CR,LF with spaces */ - for (; input + msg->eol < ptr; msg->eol++) - input[msg->eol] = ' '; - goto http_msg_hdr_val; - } - http_msg_complete_header: - /* - * It was a new header, so the last one is finished. - * Assumes msg->sol points to the first char, msg->sov points - * to the first character of the value and msg->eol to the - * first CR or LF so we know how the line ends. We insert last - * header into the index. - */ - if (unlikely(hdr_idx_add(msg->eol - msg->sol, input[msg->eol] == '\r', - idx, idx->tail) < 0)) { - state = HTTP_MSG_HDR_L2_LWS; - goto http_msg_invalid; - } - - msg->sol = ptr - input; - if (likely(!HTTP_IS_CRLF(*ptr))) { - goto http_msg_hdr_name; - } - - if (likely(*ptr == '\r')) - EAT_AND_JUMP_OR_RETURN(ptr, end, http_msg_last_lf, http_msg_ood, state, HTTP_MSG_LAST_LF); - goto http_msg_last_lf; - - case HTTP_MSG_LAST_LF: - http_msg_last_lf: - /* Assumes msg->sol points to the first of either CR or LF. - * Sets ->sov and ->next to the total header length, ->eoh to - * the last CRLF, and ->eol to the last CRLF length (1 or 2). - */ - EXPECT_LF_HERE(ptr, http_msg_invalid, state, HTTP_MSG_LAST_LF); - ptr++; - msg->sov = msg->next = ptr - input; - msg->eoh = msg->sol; - msg->sol = 0; - msg->eol = msg->sov - msg->eoh; - msg->msg_state = HTTP_MSG_BODY; - return; - - case HTTP_MSG_ERROR: - /* this may only happen if we call http_msg_analyser() twice with an error */ - break; - - default: -#ifdef DEBUG_FULL - fprintf(stderr, "FIXME !!!! impossible state at %s:%d = %d\n", __FILE__, __LINE__, state); - exit(1); -#endif - ; - } - http_msg_ood: - /* out of data */ - msg->msg_state = state; - msg->next = ptr - input; - return; - - http_msg_invalid: - /* invalid message */ - msg->err_state = state; - msg->msg_state = HTTP_MSG_ERROR; - msg->next = ptr - input; - return; -} - -/* This function skips trailers in the buffer associated with HTTP message - * . The first visited position is msg->next. If the end of the trailers is - * found, the function returns >0. So, the caller can automatically schedul it - * to be forwarded, and switch msg->msg_state to HTTP_MSG_DONE. If not enough - * data are available, the function does not change anything except maybe - * msg->sol if it could parse some lines, and returns zero. If a parse error - * is encountered, the function returns < 0 and does not change anything except - * maybe msg->sol. Note that the message must already be in HTTP_MSG_TRAILERS - * state before calling this function, which implies that all non-trailers data - * have already been scheduled for forwarding, and that msg->next exactly - * matches the length of trailers already parsed and not forwarded. It is also - * important to note that this function is designed to be able to parse wrapped - * headers at end of buffer. - */ -int http_forward_trailers(struct http_msg *msg) -{ - const struct buffer *buf = &msg->chn->buf; - const char *parse = ci_head(msg->chn); - const char *stop = b_tail(buf); - - /* we have msg->next which points to next line. Look for CRLF. But - * first, we reset msg->sol */ - msg->sol = 0; - while (1) { - const char *p1 = NULL, *p2 = NULL; - const char *start = c_ptr(msg->chn, msg->next + msg->sol); - const char *ptr = start; - - /* scan current line and stop at LF or CRLF */ - while (1) { - if (ptr == stop) - return 0; - - if (*ptr == '\n') { - if (!p1) - p1 = ptr; - p2 = ptr; - break; - } - - if (*ptr == '\r') { - if (p1) { - msg->err_pos = b_dist(buf, parse, ptr); - return -1; - } - p1 = ptr; - } - - ptr = b_next(buf, ptr); - } - - /* after LF; point to beginning of next line */ - p2 = b_next(buf, p2); - msg->sol += b_dist(buf, start, p2); - - /* LF/CRLF at beginning of line => end of trailers at p2. - * Everything was scheduled for forwarding, there's nothing left - * from this message. */ - if (p1 == start) - return 1; - - /* OK, next line then */ - } -} diff --git a/src/log.c b/src/log.c index ef999d13f5..4b0491be86 100644 --- a/src/log.c +++ b/src/log.c @@ -517,7 +517,7 @@ int add_sample_to_logformat_list(char *text, char *arg, int arg_len, struct prox goto error_free; } - /* check if we need to allocate an hdr_idx struct for HTTP parsing */ + /* check if we need to allocate an http_txn struct for HTTP parsing */ /* Note, we may also need to set curpx->to_log with certain fetches */ curpx->http_needed |= !!(expr->fetch->use & SMP_USE_HTTP_ANY); diff --git a/src/peers.c b/src/peers.c index 10fee312c1..69fed6dd26 100644 --- a/src/peers.c +++ b/src/peers.c @@ -40,7 +40,6 @@ #include #include #include -#include #include #include #include diff --git a/src/proto_http.c b/src/proto_http.c index f77d7bc488..f7b09db04b 100644 --- a/src/proto_http.c +++ b/src/proto_http.c @@ -59,7 +59,6 @@ #include #include #include -#include #include #include #include @@ -75,7071 +74,17 @@ #include #include -/* This function handles a server error at the stream interface level. The - * stream interface is assumed to be already in a closed state. An optional - * message is copied into the input buffer. - * The error flags are set to the values in arguments. Any pending request - * in this buffer will be lost. - */ -static void http_server_error(struct stream *s, struct stream_interface *si, - int err, int finst, const struct buffer *msg) -{ - if (IS_HTX_STRM(s)) - return htx_server_error(s, si, err, finst, msg); - - FLT_STRM_CB(s, flt_http_reply(s, s->txn->status, msg)); - channel_auto_read(si_oc(si)); - channel_abort(si_oc(si)); - channel_auto_close(si_oc(si)); - channel_erase(si_oc(si)); - channel_auto_close(si_ic(si)); - channel_auto_read(si_ic(si)); - if (msg) - co_inject(si_ic(si), msg->area, msg->data); - if (!(s->flags & SF_ERR_MASK)) - s->flags |= err; - if (!(s->flags & SF_FINST_MASK)) - s->flags |= finst; -} - -/* This function returns the appropriate error location for the given stream - * and message. - */ - -struct buffer *http_error_message(struct stream *s) -{ - const int msgnum = http_get_status_idx(s->txn->status); - - if (IS_HTX_STRM(s)) - return htx_error_message(s); - - if (s->be->errmsg[msgnum].area) - return &s->be->errmsg[msgnum]; - else if (strm_fe(s)->errmsg[msgnum].area) - return &strm_fe(s)->errmsg[msgnum]; - else - return &http_err_chunks[msgnum]; -} - -void -http_reply_and_close(struct stream *s, short status, struct buffer *msg) -{ - if (IS_HTX_STRM(s)) - return htx_reply_and_close(s, status, msg); - - s->txn->flags &= ~TX_WAIT_NEXT_RQ; - FLT_STRM_CB(s, flt_http_reply(s, status, msg)); - si_retnclose(&s->si[0], msg); -} - -/* Parse the URI from the given transaction (which is assumed to be in request - * phase) and look for the "/" beginning the PATH. If not found, return NULL. - * It is returned otherwise. - */ -char *http_txn_get_path(const struct http_txn *txn) -{ - struct ist ret; - - if (!txn->req.chn->buf.size) - return NULL; - - ret = http_get_path(ist2(ci_head(txn->req.chn) + txn->req.sl.rq.u, txn->req.sl.rq.u_l)); - - return ret.ptr; -} - -/* Returns a 302 for a redirectable request that reaches a server working in - * in redirect mode. This may only be called just after the stream interface - * has moved to SI_ST_ASS. Unprocessable requests are left unchanged and will - * follow normal proxy processing. NOTE: this function is designed to support - * being called once data are scheduled for forwarding. - */ -void http_perform_server_redirect(struct stream *s, struct stream_interface *si) -{ - struct http_txn *txn; - struct server *srv; - char *path; - int len, rewind; - - if (IS_HTX_STRM(s)) - return htx_perform_server_redirect(s, si); - - /* 1: create the response header */ - trash.data = strlen(HTTP_302); - memcpy(trash.area, HTTP_302, trash.data); - - srv = __objt_server(s->target); - - /* 2: add the server's prefix */ - if (trash.data + srv->rdr_len > trash.size) - return; - - /* special prefix "/" means don't change URL */ - if (srv->rdr_len != 1 || *srv->rdr_pfx != '/') { - memcpy(trash.area + trash.data, srv->rdr_pfx, srv->rdr_len); - trash.data += srv->rdr_len; - } - - /* 3: add the request URI. Since it was already forwarded, we need - * to temporarily rewind the buffer. - */ - txn = s->txn; - c_rew(&s->req, rewind = http_hdr_rewind(&txn->req)); - - path = http_txn_get_path(txn); - len = b_dist(&s->req.buf, path, c_ptr(&s->req, txn->req.sl.rq.u + txn->req.sl.rq.u_l)); - - c_adv(&s->req, rewind); - - if (!path) - return; - - if (trash.data + len > trash.size - 4) /* 4 for CRLF-CRLF */ - return; - - memcpy(trash.area + trash.data, path, len); - trash.data += len; - - if (unlikely(txn->flags & TX_USE_PX_CONN)) { - memcpy(trash.area + trash.data, - "\r\nProxy-Connection: close\r\n\r\n", 29); - trash.data += 29; - } else { - memcpy(trash.area + trash.data, - "\r\nConnection: close\r\n\r\n", 23); - trash.data += 23; - } - - /* prepare to return without error. */ - si_shutr(si); - si_shutw(si); - si->err_type = SI_ET_NONE; - si->state = SI_ST_CLO; - - /* send the message */ - txn->status = 302; - http_server_error(s, si, SF_ERR_LOCAL, SF_FINST_C, &trash); - - /* FIXME: we should increase a counter of redirects per server and per backend. */ - srv_inc_sess_ctr(srv); - srv_set_sess_last(srv); -} - -/* Return the error message corresponding to si->err_type. It is assumed - * that the server side is closed. Note that err_type is actually a - * bitmask, where almost only aborts may be cumulated with other - * values. We consider that aborted operations are more important - * than timeouts or errors due to the fact that nobody else in the - * logs might explain incomplete retries. All others should avoid - * being cumulated. It should normally not be possible to have multiple - * aborts at once, but just in case, the first one in sequence is reported. - * Note that connection errors appearing on the second request of a keep-alive - * connection are not reported since this allows the client to retry. - */ -void http_return_srv_error(struct stream *s, struct stream_interface *si) -{ - int err_type = si->err_type; - - /* set s->txn->status for http_error_message(s) */ - s->txn->status = 503; - - if (err_type & SI_ET_QUEUE_ABRT) - http_server_error(s, si, SF_ERR_CLICL, SF_FINST_Q, - http_error_message(s)); - else if (err_type & SI_ET_CONN_ABRT) - http_server_error(s, si, SF_ERR_CLICL, SF_FINST_C, - (s->txn->flags & TX_NOT_FIRST) ? NULL : - http_error_message(s)); - else if (err_type & SI_ET_QUEUE_TO) - http_server_error(s, si, SF_ERR_SRVTO, SF_FINST_Q, - http_error_message(s)); - else if (err_type & SI_ET_QUEUE_ERR) - http_server_error(s, si, SF_ERR_SRVCL, SF_FINST_Q, - http_error_message(s)); - else if (err_type & SI_ET_CONN_TO) - http_server_error(s, si, SF_ERR_SRVTO, SF_FINST_C, - (s->txn->flags & TX_NOT_FIRST) ? NULL : - http_error_message(s)); - else if (err_type & SI_ET_CONN_ERR) - http_server_error(s, si, SF_ERR_SRVCL, SF_FINST_C, - (s->flags & SF_SRV_REUSED) ? NULL : - http_error_message(s)); - else if (err_type & SI_ET_CONN_RES) - http_server_error(s, si, SF_ERR_RESOURCE, SF_FINST_C, - (s->txn->flags & TX_NOT_FIRST) ? NULL : - http_error_message(s)); - else { /* SI_ET_CONN_OTHER and others */ - s->txn->status = 500; - http_server_error(s, si, SF_ERR_INTERNAL, SF_FINST_C, - http_error_message(s)); - } -} - -extern const char sess_term_cond[8]; -extern const char sess_fin_state[8]; -extern const char *monthname[12]; - -DECLARE_POOL(pool_head_http_txn, "http_txn", sizeof(struct http_txn)); -DECLARE_POOL(pool_head_uniqueid, "uniqueid", UNIQUEID_LEN); - -struct pool_head *pool_head_requri = NULL; -struct pool_head *pool_head_capture = NULL; - -/* - * Capture headers from message starting at according to header list - * , and fill the pointers appropriately. - */ -void http_capture_headers(char *som, struct hdr_idx *idx, - char **cap, struct cap_hdr *cap_hdr) -{ - char *eol, *sol, *col, *sov; - int cur_idx; - struct cap_hdr *h; - int len; - - sol = som + hdr_idx_first_pos(idx); - cur_idx = hdr_idx_first_idx(idx); - - while (cur_idx) { - eol = sol + idx->v[cur_idx].len; - - col = sol; - while (col < eol && *col != ':') - col++; - - sov = col + 1; - while (sov < eol && HTTP_IS_LWS(*sov)) - sov++; - - for (h = cap_hdr; h; h = h->next) { - if (h->namelen && (h->namelen == col - sol) && - (strncasecmp(sol, h->name, h->namelen) == 0)) { - if (cap[h->index] == NULL) - cap[h->index] = - pool_alloc(h->pool); - - if (cap[h->index] == NULL) { - ha_alert("HTTP capture : out of memory.\n"); - continue; - } - - len = eol - sov; - if (len > h->len) - len = h->len; - - memcpy(cap[h->index], sov, len); - cap[h->index][len]=0; - } - } - sol = eol + idx->v[cur_idx].cr + 1; - cur_idx = idx->v[cur_idx].next; - } -} - -/* convert an HTTP/0.9 request into an HTTP/1.0 request. Returns 1 if the - * conversion succeeded, 0 in case of error. If the request was already 1.X, - * nothing is done and 1 is returned. - */ -int http_upgrade_v09_to_v10(struct http_txn *txn) -{ - int delta; - char *cur_end; - struct http_msg *msg = &txn->req; - - if (msg->sl.rq.v_l != 0) - return 1; - - /* RFC 1945 allows only GET for HTTP/0.9 requests */ - if (txn->meth != HTTP_METH_GET) - return 0; - - cur_end = ci_head(msg->chn) + msg->sl.rq.l; - - if (msg->sl.rq.u_l == 0) { - /* HTTP/0.9 requests *must* have a request URI, per RFC 1945 */ - return 0; - } - /* add HTTP version */ - delta = b_rep_blk(&msg->chn->buf, cur_end, cur_end, " HTTP/1.0\r\n", 11); - http_msg_move_end(msg, delta); - cur_end += delta; - cur_end = (char *)http_parse_reqline(msg, - HTTP_MSG_RQMETH, - ci_head(msg->chn), cur_end + 1, - NULL, NULL); - if (unlikely(!cur_end)) - return 0; - - /* we have a full HTTP/1.0 request now and we know that - * we have either a CR or an LF at . - */ - hdr_idx_set_start(&txn->hdr_idx, msg->sl.rq.l, *cur_end == '\r'); - return 1; -} - -/* Parse the Connection: header of an HTTP request, looking for both "close" - * and "keep-alive" values. If we already know that some headers may safely - * be removed, we remove them now. The flags are used for that : - * - bit 0 means remove "close" headers (in HTTP/1.0 requests/responses) - * - bit 1 means remove "keep-alive" headers (in HTTP/1.1 reqs/resp to 1.1). - * Presence of the "Upgrade" token is also checked and reported. - * The TX_HDR_CONN_* flags are adjusted in txn->flags depending on what was - * found, and TX_CON_*_SET is adjusted depending on what is left so only - * harmless combinations may be removed. Do not call that after changes have - * been processed. - */ -void http_parse_connection_header(struct http_txn *txn, struct http_msg *msg, int to_del) -{ - struct hdr_ctx ctx; - const char *hdr_val = "Connection"; - int hdr_len = 10; - - if (txn->flags & TX_HDR_CONN_PRS) - return; - - if (unlikely(txn->flags & TX_USE_PX_CONN)) { - hdr_val = "Proxy-Connection"; - hdr_len = 16; - } - - ctx.idx = 0; - txn->flags &= ~(TX_CON_KAL_SET|TX_CON_CLO_SET); - while (http_find_header2(hdr_val, hdr_len, ci_head(msg->chn), &txn->hdr_idx, &ctx)) { - if (ctx.vlen >= 10 && word_match(ctx.line + ctx.val, ctx.vlen, "keep-alive", 10)) { - txn->flags |= TX_HDR_CONN_KAL; - if (to_del & 2) - http_remove_header2(msg, &txn->hdr_idx, &ctx); - else - txn->flags |= TX_CON_KAL_SET; - } - else if (ctx.vlen >= 5 && word_match(ctx.line + ctx.val, ctx.vlen, "close", 5)) { - txn->flags |= TX_HDR_CONN_CLO; - if (to_del & 1) - http_remove_header2(msg, &txn->hdr_idx, &ctx); - else - txn->flags |= TX_CON_CLO_SET; - } - else if (ctx.vlen >= 7 && word_match(ctx.line + ctx.val, ctx.vlen, "upgrade", 7)) { - txn->flags |= TX_HDR_CONN_UPG; - } - } - - txn->flags |= TX_HDR_CONN_PRS; - return; -} - -/* Apply desired changes on the Connection: header. Values may be removed and/or - * added depending on the flags, which are exclusively composed of - * TX_CON_CLO_SET and TX_CON_KAL_SET, depending on what flags are desired. The - * TX_CON_*_SET flags are adjusted in txn->flags depending on what is left. - */ -void http_change_connection_header(struct http_txn *txn, struct http_msg *msg, int wanted) -{ - struct hdr_ctx ctx; - const char *hdr_val = "Connection"; - int hdr_len = 10; - - ctx.idx = 0; - - - if (unlikely(txn->flags & TX_USE_PX_CONN)) { - hdr_val = "Proxy-Connection"; - hdr_len = 16; - } - - txn->flags &= ~(TX_CON_CLO_SET | TX_CON_KAL_SET); - while (http_find_header2(hdr_val, hdr_len, ci_head(msg->chn), &txn->hdr_idx, &ctx)) { - if (ctx.vlen >= 10 && word_match(ctx.line + ctx.val, ctx.vlen, "keep-alive", 10)) { - if (wanted & TX_CON_KAL_SET) - txn->flags |= TX_CON_KAL_SET; - else - http_remove_header2(msg, &txn->hdr_idx, &ctx); - } - else if (ctx.vlen >= 5 && word_match(ctx.line + ctx.val, ctx.vlen, "close", 5)) { - if (wanted & TX_CON_CLO_SET) - txn->flags |= TX_CON_CLO_SET; - else - http_remove_header2(msg, &txn->hdr_idx, &ctx); - } - } - - if (wanted == (txn->flags & (TX_CON_CLO_SET|TX_CON_KAL_SET))) - return; - - if ((wanted & TX_CON_CLO_SET) && !(txn->flags & TX_CON_CLO_SET)) { - txn->flags |= TX_CON_CLO_SET; - hdr_val = "Connection: close"; - hdr_len = 17; - if (unlikely(txn->flags & TX_USE_PX_CONN)) { - hdr_val = "Proxy-Connection: close"; - hdr_len = 23; - } - http_header_add_tail2(msg, &txn->hdr_idx, hdr_val, hdr_len); - } - - if ((wanted & TX_CON_KAL_SET) && !(txn->flags & TX_CON_KAL_SET)) { - txn->flags |= TX_CON_KAL_SET; - hdr_val = "Connection: keep-alive"; - hdr_len = 22; - if (unlikely(txn->flags & TX_USE_PX_CONN)) { - hdr_val = "Proxy-Connection: keep-alive"; - hdr_len = 28; - } - http_header_add_tail2(msg, &txn->hdr_idx, hdr_val, hdr_len); - } - return; -} - -void http_adjust_conn_mode(struct stream *s, struct http_txn *txn, struct http_msg *msg) -{ - struct proxy *fe = strm_fe(s); - int tmp = TX_CON_WANT_KAL; - - if (IS_HTX_STRM(s)) - return; - - if ((fe->options & PR_O_HTTP_MODE) == PR_O_HTTP_TUN || - (s->be->options & PR_O_HTTP_MODE) == PR_O_HTTP_TUN) - tmp = TX_CON_WANT_TUN; - - if ((fe->options & PR_O_HTTP_MODE) == PR_O_HTTP_SCL || - (s->be->options & PR_O_HTTP_MODE) == PR_O_HTTP_SCL) - tmp = TX_CON_WANT_SCL; - - if ((fe->options & PR_O_HTTP_MODE) == PR_O_HTTP_CLO || - (s->be->options & PR_O_HTTP_MODE) == PR_O_HTTP_CLO) - tmp = TX_CON_WANT_CLO; - - if ((txn->flags & TX_CON_WANT_MSK) < tmp) - txn->flags = (txn->flags & ~TX_CON_WANT_MSK) | tmp; - - if (!(txn->flags & TX_HDR_CONN_PRS) && - (txn->flags & TX_CON_WANT_MSK) != TX_CON_WANT_TUN) { - /* parse the Connection header and possibly clean it */ - int to_del = 0; - if ((msg->flags & HTTP_MSGF_VER_11) || - ((txn->flags & TX_CON_WANT_MSK) >= TX_CON_WANT_SCL && - !((fe->options2|s->be->options2) & PR_O2_FAKE_KA))) - to_del |= 2; /* remove "keep-alive" */ - if (!(msg->flags & HTTP_MSGF_VER_11)) - to_del |= 1; /* remove "close" */ - http_parse_connection_header(txn, msg, to_del); - } - - /* check if client or config asks for explicit close in KAL/SCL */ - if (((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_KAL || - (txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_SCL) && - ((txn->flags & TX_HDR_CONN_CLO) || /* "connection: close" */ - (!(msg->flags & HTTP_MSGF_VER_11) && !(txn->flags & TX_HDR_CONN_KAL)) || /* no "connection: k-a" in 1.0 */ - !(msg->flags & HTTP_MSGF_XFER_LEN) || /* no length known => close */ - fe->state == PR_STSTOPPED)) /* frontend is stopping */ - txn->flags = (txn->flags & ~TX_CON_WANT_MSK) | TX_CON_WANT_CLO; -} - -/* This stream analyser waits for a complete HTTP request. It returns 1 if the - * processing can continue on next analysers, or zero if it either needs more - * data or wants to immediately abort the request (eg: timeout, error, ...). It - * is tied to AN_REQ_WAIT_HTTP and may may remove itself from s->req.analysers - * when it has nothing left to do, and may remove any analyser when it wants to - * abort. - */ -int http_wait_for_request(struct stream *s, struct channel *req, int an_bit) -{ - /* - * We will parse the partial (or complete) lines. - * We will check the request syntax, and also join multi-line - * headers. An index of all the lines will be elaborated while - * parsing. - * - * For the parsing, we use a 28 states FSM. - * - * Here is the information we currently have : - * ci_head(req) = beginning of request - * ci_head(req) + msg->eoh = end of processed headers / start of current one - * ci_tail(req) = end of input data - * msg->eol = end of current header or line (LF or CRLF) - * msg->next = first non-visited byte - * - * At end of parsing, we may perform a capture of the error (if any), and - * we will set a few fields (txn->meth, sn->flags/SF_REDIRECTABLE). - * We also check for monitor-uri, logging, HTTP/0.9 to 1.0 conversion, and - * finally headers capture. - */ - - int cur_idx; - struct session *sess = s->sess; - struct http_txn *txn = s->txn; - struct http_msg *msg = &txn->req; - struct hdr_ctx ctx; - - if (IS_HTX_STRM(s)) - return htx_wait_for_request(s, req, an_bit); - - DPRINTF(stderr,"[%u] %s: stream=%p b=%p, exp(r,w)=%u,%u bf=%08x bh=%lu analysers=%02x\n", - now_ms, __FUNCTION__, - s, - req, - req->rex, req->wex, - req->flags, - ci_data(req), - req->analysers); - - /* we're speaking HTTP here, so let's speak HTTP to the client */ - s->srv_error = http_return_srv_error; - - /* If there is data available for analysis, log the end of the idle time. */ - if (c_data(req) && s->logs.t_idle == -1) - s->logs.t_idle = tv_ms_elapsed(&s->logs.tv_accept, &now) - s->logs.t_handshake; - - /* There's a protected area at the end of the buffer for rewriting - * purposes. We don't want to start to parse the request if the - * protected area is affected, because we may have to move processed - * data later, which is much more complicated. - */ - if (c_data(req) && msg->msg_state < HTTP_MSG_ERROR) { - if (txn->flags & TX_NOT_FIRST) { - if (unlikely(!channel_is_rewritable(req))) { - if (req->flags & (CF_SHUTW|CF_SHUTW_NOW|CF_WRITE_ERROR|CF_WRITE_TIMEOUT)) - goto failed_keep_alive; - /* some data has still not left the buffer, wake us once that's done */ - channel_dont_connect(req); - req->flags |= CF_READ_DONTWAIT; /* try to get back here ASAP */ - req->flags |= CF_WAKE_WRITE; - return 0; - } - if (unlikely(ci_tail(req) < c_ptr(req, msg->next) || - ci_tail(req) > b_wrap(&req->buf) - global.tune.maxrewrite)) - channel_slow_realign(req, trash.area); - } - - if (likely(msg->next < ci_data(req))) /* some unparsed data are available */ - http_msg_analyzer(msg, &txn->hdr_idx); - } - - /* 1: we might have to print this header in debug mode */ - if (unlikely((global.mode & MODE_DEBUG) && - (!(global.mode & MODE_QUIET) || (global.mode & MODE_VERBOSE)) && - msg->msg_state >= HTTP_MSG_BODY)) { - char *eol, *sol; - - sol = ci_head(req); - /* this is a bit complex : in case of error on the request line, - * we know that rq.l is still zero, so we display only the part - * up to the end of the line (truncated by debug_hdr). - */ - eol = sol + (msg->sl.rq.l ? msg->sl.rq.l : ci_data(req)); - debug_hdr("clireq", s, sol, eol); - - sol += hdr_idx_first_pos(&txn->hdr_idx); - cur_idx = hdr_idx_first_idx(&txn->hdr_idx); - - while (cur_idx) { - eol = sol + txn->hdr_idx.v[cur_idx].len; - debug_hdr("clihdr", s, sol, eol); - sol = eol + txn->hdr_idx.v[cur_idx].cr + 1; - cur_idx = txn->hdr_idx.v[cur_idx].next; - } - } - - - /* - * Now we quickly check if we have found a full valid request. - * If not so, we check the FD and buffer states before leaving. - * A full request is indicated by the fact that we have seen - * the double LF/CRLF, so the state is >= HTTP_MSG_BODY. Invalid - * requests are checked first. When waiting for a second request - * on a keep-alive stream, if we encounter and error, close, t/o, - * we note the error in the stream flags but don't set any state. - * Since the error will be noted there, it will not be counted by - * process_stream() as a frontend error. - * Last, we may increase some tracked counters' http request errors on - * the cases that are deliberately the client's fault. For instance, - * a timeout or connection reset is not counted as an error. However - * a bad request is. - */ - - if (unlikely(msg->msg_state < HTTP_MSG_BODY)) { - /* - * First, let's catch bad requests. - */ - if (unlikely(msg->msg_state == HTTP_MSG_ERROR)) { - stream_inc_http_req_ctr(s); - stream_inc_http_err_ctr(s); - proxy_inc_fe_req_ctr(sess->fe); - goto return_bad_req; - } - - /* 1: Since we are in header mode, if there's no space - * left for headers, we won't be able to free more - * later, so the stream will never terminate. We - * must terminate it now. - */ - if (unlikely(channel_full(req, global.tune.maxrewrite))) { - /* FIXME: check if URI is set and return Status - * 414 Request URI too long instead. - */ - stream_inc_http_req_ctr(s); - stream_inc_http_err_ctr(s); - proxy_inc_fe_req_ctr(sess->fe); - if (msg->err_pos < 0) - msg->err_pos = ci_data(req); - goto return_bad_req; - } - - /* 2: have we encountered a read error ? */ - else if (req->flags & CF_READ_ERROR) { - if (!(s->flags & SF_ERR_MASK)) - s->flags |= SF_ERR_CLICL; - - if (txn->flags & TX_WAIT_NEXT_RQ) - goto failed_keep_alive; - - if (sess->fe->options & PR_O_IGNORE_PRB) - goto failed_keep_alive; - - /* we cannot return any message on error */ - if (msg->err_pos >= 0) { - http_capture_bad_message(sess->fe, s, msg, msg->err_state, sess->fe); - stream_inc_http_err_ctr(s); - } - - txn->status = 400; - msg->err_state = msg->msg_state; - msg->msg_state = HTTP_MSG_ERROR; - http_reply_and_close(s, txn->status, NULL); - req->analysers &= AN_REQ_FLT_END; - stream_inc_http_req_ctr(s); - proxy_inc_fe_req_ctr(sess->fe); - _HA_ATOMIC_ADD(&sess->fe->fe_counters.failed_req, 1); - if (sess->listener->counters) - _HA_ATOMIC_ADD(&sess->listener->counters->failed_req, 1); - - if (!(s->flags & SF_FINST_MASK)) - s->flags |= SF_FINST_R; - return 0; - } - - /* 3: has the read timeout expired ? */ - else if (req->flags & CF_READ_TIMEOUT || tick_is_expired(req->analyse_exp, now_ms)) { - if (!(s->flags & SF_ERR_MASK)) - s->flags |= SF_ERR_CLITO; - - if (txn->flags & TX_WAIT_NEXT_RQ) - goto failed_keep_alive; - - if (sess->fe->options & PR_O_IGNORE_PRB) - goto failed_keep_alive; - - /* read timeout : give up with an error message. */ - if (msg->err_pos >= 0) { - http_capture_bad_message(sess->fe, s, msg, msg->err_state, sess->fe); - stream_inc_http_err_ctr(s); - } - txn->status = 408; - msg->err_state = msg->msg_state; - msg->msg_state = HTTP_MSG_ERROR; - http_reply_and_close(s, txn->status, http_error_message(s)); - req->analysers &= AN_REQ_FLT_END; - - stream_inc_http_req_ctr(s); - proxy_inc_fe_req_ctr(sess->fe); - _HA_ATOMIC_ADD(&sess->fe->fe_counters.failed_req, 1); - if (sess->listener->counters) - _HA_ATOMIC_ADD(&sess->listener->counters->failed_req, 1); - - if (!(s->flags & SF_FINST_MASK)) - s->flags |= SF_FINST_R; - return 0; - } - - /* 4: have we encountered a close ? */ - else if (req->flags & CF_SHUTR) { - if (!(s->flags & SF_ERR_MASK)) - s->flags |= SF_ERR_CLICL; - - if (txn->flags & TX_WAIT_NEXT_RQ) - goto failed_keep_alive; - - if (sess->fe->options & PR_O_IGNORE_PRB) - goto failed_keep_alive; - - if (msg->err_pos >= 0) - http_capture_bad_message(sess->fe, s, msg, msg->err_state, sess->fe); - txn->status = 400; - msg->err_state = msg->msg_state; - msg->msg_state = HTTP_MSG_ERROR; - http_reply_and_close(s, txn->status, http_error_message(s)); - req->analysers &= AN_REQ_FLT_END; - stream_inc_http_err_ctr(s); - stream_inc_http_req_ctr(s); - proxy_inc_fe_req_ctr(sess->fe); - _HA_ATOMIC_ADD(&sess->fe->fe_counters.failed_req, 1); - if (sess->listener->counters) - _HA_ATOMIC_ADD(&sess->listener->counters->failed_req, 1); - - if (!(s->flags & SF_FINST_MASK)) - s->flags |= SF_FINST_R; - return 0; - } - - channel_dont_connect(req); - req->flags |= CF_READ_DONTWAIT; /* try to get back here ASAP */ - s->res.flags &= ~CF_EXPECT_MORE; /* speed up sending a previous response */ - - if (sess->listener->options & LI_O_NOQUICKACK && ci_data(req)) { - /* We need more data, we have to re-enable quick-ack in case we - * previously disabled it, otherwise we might cause the client - * to delay next data. - */ - conn_set_quickack(objt_conn(sess->origin), 1); - } - - if ((msg->msg_state != HTTP_MSG_RQBEFORE) && (txn->flags & TX_WAIT_NEXT_RQ)) { - /* If the client starts to talk, let's fall back to - * request timeout processing. - */ - txn->flags &= ~TX_WAIT_NEXT_RQ; - req->analyse_exp = TICK_ETERNITY; - } - - /* just set the request timeout once at the beginning of the request */ - if (!tick_isset(req->analyse_exp)) { - if ((msg->msg_state == HTTP_MSG_RQBEFORE) && - (txn->flags & TX_WAIT_NEXT_RQ) && - tick_isset(s->be->timeout.httpka)) - req->analyse_exp = tick_add(now_ms, s->be->timeout.httpka); - else - req->analyse_exp = tick_add_ifset(now_ms, s->be->timeout.httpreq); - } - - /* we're not ready yet */ - return 0; - - failed_keep_alive: - /* Here we process low-level errors for keep-alive requests. In - * short, if the request is not the first one and it experiences - * a timeout, read error or shutdown, we just silently close so - * that the client can try again. - */ - txn->status = 0; - msg->msg_state = HTTP_MSG_RQBEFORE; - req->analysers &= AN_REQ_FLT_END; - s->logs.logwait = 0; - s->logs.level = 0; - s->res.flags &= ~CF_EXPECT_MORE; /* speed up sending a previous response */ - http_reply_and_close(s, txn->status, NULL); - return 0; - } - - /* OK now we have a complete HTTP request with indexed headers. Let's - * complete the request parsing by setting a few fields we will need - * later. At this point, we have the last CRLF at req->buf.data + msg->eoh. - * If the request is in HTTP/0.9 form, the rule is still true, and eoh - * points to the CRLF of the request line. msg->next points to the first - * byte after the last LF. msg->sov points to the first byte of data. - * msg->eol cannot be trusted because it may have been left uninitialized - * (for instance in the absence of headers). - */ - - stream_inc_http_req_ctr(s); - proxy_inc_fe_req_ctr(sess->fe); /* one more valid request for this FE */ - - if (txn->flags & TX_WAIT_NEXT_RQ) { - /* kill the pending keep-alive timeout */ - txn->flags &= ~TX_WAIT_NEXT_RQ; - req->analyse_exp = TICK_ETERNITY; - } - - - /* Maybe we found in invalid header name while we were configured not - * to block on that, so we have to capture it now. - */ - if (unlikely(msg->err_pos >= 0)) - http_capture_bad_message(sess->fe, s, msg, msg->err_state, sess->fe); - - /* - * 1: identify the method - */ - txn->meth = find_http_meth(ci_head(req), msg->sl.rq.m_l); - - /* we can make use of server redirect on GET and HEAD */ - if (txn->meth == HTTP_METH_GET || txn->meth == HTTP_METH_HEAD) - s->flags |= SF_REDIRECTABLE; - else if (txn->meth == HTTP_METH_OTHER && - msg->sl.rq.m_l == 3 && memcmp(ci_head(req), "PRI", 3) == 0) { - /* PRI is reserved for the HTTP/2 preface */ - msg->err_pos = 0; - goto return_bad_req; - } - - /* - * 2: check if the URI matches the monitor_uri. - * We have to do this for every request which gets in, because - * the monitor-uri is defined by the frontend. - */ - if (unlikely((sess->fe->monitor_uri_len != 0) && - (sess->fe->monitor_uri_len == msg->sl.rq.u_l) && - !memcmp(ci_head(req) + msg->sl.rq.u, - sess->fe->monitor_uri, - sess->fe->monitor_uri_len))) { - /* - * We have found the monitor URI - */ - struct acl_cond *cond; - - s->flags |= SF_MONITOR; - _HA_ATOMIC_ADD(&sess->fe->fe_counters.intercepted_req, 1); - - /* Check if we want to fail this monitor request or not */ - list_for_each_entry(cond, &sess->fe->mon_fail_cond, list) { - int ret = acl_exec_cond(cond, sess->fe, sess, s, SMP_OPT_DIR_REQ|SMP_OPT_FINAL); - - ret = acl_pass(ret); - if (cond->pol == ACL_COND_UNLESS) - ret = !ret; - - if (ret) { - /* we fail this request, let's return 503 service unavail */ - txn->status = 503; - http_reply_and_close(s, txn->status, http_error_message(s)); - if (!(s->flags & SF_ERR_MASK)) - s->flags |= SF_ERR_LOCAL; /* we don't want a real error here */ - goto return_prx_cond; - } - } - - /* nothing to fail, let's reply normally */ - txn->status = 200; - http_reply_and_close(s, txn->status, http_error_message(s)); - if (!(s->flags & SF_ERR_MASK)) - s->flags |= SF_ERR_LOCAL; /* we don't want a real error here */ - goto return_prx_cond; - } - - /* - * 3: Maybe we have to copy the original REQURI for the logs ? - * Note: we cannot log anymore if the request has been - * classified as invalid. - */ - if (unlikely(s->logs.logwait & LW_REQ)) { - /* we have a complete HTTP request that we must log */ - if ((txn->uri = pool_alloc(pool_head_requri)) != NULL) { - int urilen = msg->sl.rq.l; - - if (urilen >= global.tune.requri_len ) - urilen = global.tune.requri_len - 1; - memcpy(txn->uri, ci_head(req), urilen); - txn->uri[urilen] = 0; - - if (!(s->logs.logwait &= ~(LW_REQ|LW_INIT))) - s->do_log(s); - } else { - ha_alert("HTTP logging : out of memory.\n"); - } - } - - /* RFC7230#2.6 has enforced the format of the HTTP version string to be - * exactly one digit "." one digit. This check may be disabled using - * option accept-invalid-http-request. - */ - if (!(sess->fe->options2 & PR_O2_REQBUG_OK)) { - if (msg->sl.rq.v_l != 8) { - msg->err_pos = msg->sl.rq.v; - goto return_bad_req; - } - - if (ci_head(req)[msg->sl.rq.v + 4] != '/' || - !isdigit((unsigned char)ci_head(req)[msg->sl.rq.v + 5]) || - ci_head(req)[msg->sl.rq.v + 6] != '.' || - !isdigit((unsigned char)ci_head(req)[msg->sl.rq.v + 7])) { - msg->err_pos = msg->sl.rq.v + 4; - goto return_bad_req; - } - } - else { - /* 4. We may have to convert HTTP/0.9 requests to HTTP/1.0 */ - if (unlikely(msg->sl.rq.v_l == 0) && !http_upgrade_v09_to_v10(txn)) - goto return_bad_req; - } - - /* ... and check if the request is HTTP/1.1 or above */ - if ((msg->sl.rq.v_l == 8) && - ((ci_head(req)[msg->sl.rq.v + 5] > '1') || - ((ci_head(req)[msg->sl.rq.v + 5] == '1') && - (ci_head(req)[msg->sl.rq.v + 7] >= '1')))) - msg->flags |= HTTP_MSGF_VER_11; - - /* "connection" has not been parsed yet */ - txn->flags &= ~(TX_HDR_CONN_PRS | TX_HDR_CONN_CLO | TX_HDR_CONN_KAL | TX_HDR_CONN_UPG); - - /* if the frontend has "option http-use-proxy-header", we'll check if - * we have what looks like a proxied connection instead of a connection, - * and in this case set the TX_USE_PX_CONN flag to use Proxy-connection. - * Note that this is *not* RFC-compliant, however browsers and proxies - * happen to do that despite being non-standard :-( - * We consider that a request not beginning with either '/' or '*' is - * a proxied connection, which covers both "scheme://location" and - * CONNECT ip:port. - */ - if ((sess->fe->options2 & PR_O2_USE_PXHDR) && - ci_head(req)[msg->sl.rq.u] != '/' && ci_head(req)[msg->sl.rq.u] != '*') - txn->flags |= TX_USE_PX_CONN; - - /* transfer length unknown*/ - msg->flags &= ~HTTP_MSGF_XFER_LEN; - - /* 5: we may need to capture headers */ - if (unlikely((s->logs.logwait & LW_REQHDR) && s->req_cap)) - http_capture_headers(ci_head(req), &txn->hdr_idx, - s->req_cap, sess->fe->req_cap); - - /* 6: determine the transfer-length according to RFC2616 #4.4, updated - * by RFC7230#3.3.3 : - * - * The length of a message body is determined by one of the following - * (in order of precedence): - * - * 1. Any response to a HEAD request and any response with a 1xx - * (Informational), 204 (No Content), or 304 (Not Modified) status - * code is always terminated by the first empty line after the - * header fields, regardless of the header fields present in the - * message, and thus cannot contain a message body. - * - * 2. Any 2xx (Successful) response to a CONNECT request implies that - * the connection will become a tunnel immediately after the empty - * line that concludes the header fields. A client MUST ignore any - * Content-Length or Transfer-Encoding header fields received in - * such a message. - * - * 3. If a Transfer-Encoding header field is present and the chunked - * transfer coding (Section 4.1) is the final encoding, the message - * body length is determined by reading and decoding the chunked - * data until the transfer coding indicates the data is complete. - * - * If a Transfer-Encoding header field is present in a response and - * the chunked transfer coding is not the final encoding, the - * message body length is determined by reading the connection until - * it is closed by the server. If a Transfer-Encoding header field - * is present in a request and the chunked transfer coding is not - * the final encoding, the message body length cannot be determined - * reliably; the server MUST respond with the 400 (Bad Request) - * status code and then close the connection. - * - * If a message is received with both a Transfer-Encoding and a - * Content-Length header field, the Transfer-Encoding overrides the - * Content-Length. Such a message might indicate an attempt to - * perform request smuggling (Section 9.5) or response splitting - * (Section 9.4) and ought to be handled as an error. A sender MUST - * remove the received Content-Length field prior to forwarding such - * a message downstream. - * - * 4. If a message is received without Transfer-Encoding and with - * either multiple Content-Length header fields having differing - * field-values or a single Content-Length header field having an - * invalid value, then the message framing is invalid and the - * recipient MUST treat it as an unrecoverable error. If this is a - * request message, the server MUST respond with a 400 (Bad Request) - * status code and then close the connection. If this is a response - * message received by a proxy, the proxy MUST close the connection - * to the server, discard the received response, and send a 502 (Bad - * Gateway) response to the client. If this is a response message - * received by a user agent, the user agent MUST close the - * connection to the server and discard the received response. - * - * 5. If a valid Content-Length header field is present without - * Transfer-Encoding, its decimal value defines the expected message - * body length in octets. If the sender closes the connection or - * the recipient times out before the indicated number of octets are - * received, the recipient MUST consider the message to be - * incomplete and close the connection. - * - * 6. If this is a request message and none of the above are true, then - * the message body length is zero (no message body is present). - * - * 7. Otherwise, this is a response message without a declared message - * body length, so the message body length is determined by the - * number of octets received prior to the server closing the - * connection. - */ - - ctx.idx = 0; - /* set TE_CHNK and XFER_LEN only if "chunked" is seen last */ - while (http_find_header2("Transfer-Encoding", 17, ci_head(req), &txn->hdr_idx, &ctx)) { - if (ctx.vlen == 7 && strncasecmp(ctx.line + ctx.val, "chunked", 7) == 0) - msg->flags |= HTTP_MSGF_TE_CHNK; - else if (msg->flags & HTTP_MSGF_TE_CHNK) { - /* chunked not last, return badreq */ - goto return_bad_req; - } - } - - /* Chunked requests must have their content-length removed */ - ctx.idx = 0; - if (msg->flags & HTTP_MSGF_TE_CHNK) { - while (http_find_header2("Content-Length", 14, ci_head(req), &txn->hdr_idx, &ctx)) - http_remove_header2(msg, &txn->hdr_idx, &ctx); - } - else while (http_find_header2("Content-Length", 14, ci_head(req), &txn->hdr_idx, &ctx)) { - signed long long cl; - - if (!ctx.vlen) { - msg->err_pos = ctx.line + ctx.val - ci_head(req); - goto return_bad_req; - } - - if (strl2llrc(ctx.line + ctx.val, ctx.vlen, &cl)) { - msg->err_pos = ctx.line + ctx.val - ci_head(req); - goto return_bad_req; /* parse failure */ - } - - if (cl < 0) { - msg->err_pos = ctx.line + ctx.val - ci_head(req); - goto return_bad_req; - } - - if ((msg->flags & HTTP_MSGF_CNT_LEN) && (msg->chunk_len != cl)) { - msg->err_pos = ctx.line + ctx.val - ci_head(req); - goto return_bad_req; /* already specified, was different */ - } - - msg->flags |= HTTP_MSGF_CNT_LEN; - msg->body_len = msg->chunk_len = cl; - } - - /* even bodyless requests have a known length */ - msg->flags |= HTTP_MSGF_XFER_LEN; - - /* Until set to anything else, the connection mode is set as Keep-Alive. It will - * only change if both the request and the config reference something else. - * Option httpclose by itself sets tunnel mode where headers are mangled. - * However, if another mode is set, it will affect it (eg: server-close/ - * keep-alive + httpclose = close). Note that we avoid to redo the same work - * if FE and BE have the same settings (common). The method consists in - * checking if options changed between the two calls (implying that either - * one is non-null, or one of them is non-null and we are there for the first - * time. - */ - if (!(txn->flags & TX_HDR_CONN_PRS) || - ((sess->fe->options & PR_O_HTTP_MODE) != (s->be->options & PR_O_HTTP_MODE))) - http_adjust_conn_mode(s, txn, msg); - - /* we may have to wait for the request's body */ - if ((s->be->options & PR_O_WREQ_BODY) && - (msg->body_len || (msg->flags & HTTP_MSGF_TE_CHNK))) - req->analysers |= AN_REQ_HTTP_BODY; - - /* - * RFC7234#4: - * A cache MUST write through requests with methods - * that are unsafe (Section 4.2.1 of [RFC7231]) to - * the origin server; i.e., a cache is not allowed - * to generate a reply to such a request before - * having forwarded the request and having received - * a corresponding response. - * - * RFC7231#4.2.1: - * Of the request methods defined by this - * specification, the GET, HEAD, OPTIONS, and TRACE - * methods are defined to be safe. - */ - if (likely(txn->meth == HTTP_METH_GET || - txn->meth == HTTP_METH_HEAD || - txn->meth == HTTP_METH_OPTIONS || - txn->meth == HTTP_METH_TRACE)) - txn->flags |= TX_CACHEABLE | TX_CACHE_COOK; - - /* end of job, return OK */ - req->analysers &= ~an_bit; - req->analyse_exp = TICK_ETERNITY; - return 1; - - return_bad_req: - /* We centralize bad requests processing here */ - if (unlikely(msg->msg_state == HTTP_MSG_ERROR) || msg->err_pos >= 0) { - /* we detected a parsing error. We want to archive this request - * in the dedicated proxy area for later troubleshooting. - */ - http_capture_bad_message(sess->fe, s, msg, msg->err_state, sess->fe); - } - - txn->req.err_state = txn->req.msg_state; - txn->req.msg_state = HTTP_MSG_ERROR; - txn->status = 400; - http_reply_and_close(s, txn->status, http_error_message(s)); - - _HA_ATOMIC_ADD(&sess->fe->fe_counters.failed_req, 1); - if (sess->listener->counters) - _HA_ATOMIC_ADD(&sess->listener->counters->failed_req, 1); - - return_prx_cond: - if (!(s->flags & SF_ERR_MASK)) - s->flags |= SF_ERR_PRXCOND; - if (!(s->flags & SF_FINST_MASK)) - s->flags |= SF_FINST_R; - - req->analysers &= AN_REQ_FLT_END; - req->analyse_exp = TICK_ETERNITY; - return 0; -} - - -/* This function prepares an applet to handle the stats. It can deal with the - * "100-continue" expectation, check that admin rules are met for POST requests, - * and program a response message if something was unexpected. It cannot fail - * and always relies on the stats applet to complete the job. It does not touch - * analysers nor counters, which are left to the caller. It does not touch - * s->target which is supposed to already point to the stats applet. The caller - * is expected to have already assigned an appctx to the stream. - */ -int http_handle_stats(struct stream *s, struct channel *req) -{ - struct stats_admin_rule *stats_admin_rule; - struct stream_interface *si = &s->si[1]; - struct session *sess = s->sess; - struct http_txn *txn = s->txn; - struct http_msg *msg = &txn->req; - struct uri_auth *uri_auth = s->be->uri_auth; - const char *uri, *h, *lookup; - struct appctx *appctx; - - appctx = si_appctx(si); - memset(&appctx->ctx.stats, 0, sizeof(appctx->ctx.stats)); - appctx->st1 = appctx->st2 = 0; - appctx->ctx.stats.st_code = STAT_STATUS_INIT; - appctx->ctx.stats.flags |= STAT_FMT_HTML; /* assume HTML mode by default */ - if ((msg->flags & HTTP_MSGF_VER_11) && (s->txn->meth != HTTP_METH_HEAD)) - appctx->ctx.stats.flags |= STAT_CHUNKED; - - uri = ci_head(msg->chn) + msg->sl.rq.u; - lookup = uri + uri_auth->uri_len; - - for (h = lookup; h <= uri + msg->sl.rq.u_l - 3; h++) { - if (memcmp(h, ";up", 3) == 0) { - appctx->ctx.stats.flags |= STAT_HIDE_DOWN; - break; - } - } - - if (uri_auth->refresh) { - for (h = lookup; h <= uri + msg->sl.rq.u_l - 10; h++) { - if (memcmp(h, ";norefresh", 10) == 0) { - appctx->ctx.stats.flags |= STAT_NO_REFRESH; - break; - } - } - } - - for (h = lookup; h <= uri + msg->sl.rq.u_l - 4; h++) { - if (memcmp(h, ";csv", 4) == 0) { - appctx->ctx.stats.flags &= ~STAT_FMT_HTML; - break; - } - } - - for (h = lookup; h <= uri + msg->sl.rq.u_l - 6; h++) { - if (memcmp(h, ";typed", 6) == 0) { - appctx->ctx.stats.flags &= ~STAT_FMT_HTML; - appctx->ctx.stats.flags |= STAT_FMT_TYPED; - break; - } - } - - for (h = lookup; h <= uri + msg->sl.rq.u_l - 8; h++) { - if (memcmp(h, ";st=", 4) == 0) { - int i; - h += 4; - appctx->ctx.stats.st_code = STAT_STATUS_UNKN; - for (i = STAT_STATUS_INIT + 1; i < STAT_STATUS_SIZE; i++) { - if (strncmp(stat_status_codes[i], h, 4) == 0) { - appctx->ctx.stats.st_code = i; - break; - } - } - break; - } - } - - appctx->ctx.stats.scope_str = 0; - appctx->ctx.stats.scope_len = 0; - for (h = lookup; h <= uri + msg->sl.rq.u_l - 8; h++) { - if (memcmp(h, STAT_SCOPE_INPUT_NAME "=", strlen(STAT_SCOPE_INPUT_NAME) + 1) == 0) { - int itx = 0; - const char *h2; - char scope_txt[STAT_SCOPE_TXT_MAXLEN + 1]; - const char *err; - - h += strlen(STAT_SCOPE_INPUT_NAME) + 1; - h2 = h; - appctx->ctx.stats.scope_str = h2 - ci_head(msg->chn); - while (*h != ';' && *h != '\0' && *h != '&' && *h != ' ' && *h != '\n') { - itx++; - h++; - } - - if (itx > STAT_SCOPE_TXT_MAXLEN) - itx = STAT_SCOPE_TXT_MAXLEN; - appctx->ctx.stats.scope_len = itx; - - /* scope_txt = search query, appctx->ctx.stats.scope_len is always <= STAT_SCOPE_TXT_MAXLEN */ - memcpy(scope_txt, h2, itx); - scope_txt[itx] = '\0'; - err = invalid_char(scope_txt); - if (err) { - /* bad char in search text => clear scope */ - appctx->ctx.stats.scope_str = 0; - appctx->ctx.stats.scope_len = 0; - } - break; - } - } - - /* now check whether we have some admin rules for this request */ - list_for_each_entry(stats_admin_rule, &uri_auth->admin_rules, list) { - int ret = 1; - - if (stats_admin_rule->cond) { - ret = acl_exec_cond(stats_admin_rule->cond, s->be, sess, s, SMP_OPT_DIR_REQ|SMP_OPT_FINAL); - ret = acl_pass(ret); - if (stats_admin_rule->cond->pol == ACL_COND_UNLESS) - ret = !ret; - } - - if (ret) { - /* no rule, or the rule matches */ - appctx->ctx.stats.flags |= STAT_ADMIN; - break; - } - } - - if (txn->meth == HTTP_METH_GET || txn->meth == HTTP_METH_HEAD) - appctx->st0 = STAT_HTTP_HEAD; - else if (txn->meth == HTTP_METH_POST && (msg->flags & HTTP_MSGF_CNT_LEN)) { - if (appctx->ctx.stats.flags & STAT_ADMIN) - appctx->st0 = STAT_HTTP_POST; - else { - /* POST without admin level */ - appctx->ctx.stats.flags &= ~STAT_CHUNKED; - appctx->ctx.stats.st_code = STAT_STATUS_DENY; - appctx->st0 = STAT_HTTP_LAST; - } - } - else { - /* Unsupported method or chunked POST */ - appctx->ctx.stats.flags &= ~STAT_CHUNKED; - appctx->ctx.stats.st_code = STAT_STATUS_IVAL; - appctx->st0 = STAT_HTTP_LAST; - } - - s->task->nice = -32; /* small boost for HTTP statistics */ - return 1; -} - -int http_transform_header_str(struct stream* s, struct http_msg *msg, - const char* name, unsigned int name_len, - const char *str, struct my_regex *re, - int action) -{ - struct hdr_idx *idx = &s->txn->hdr_idx; - struct buffer *output = get_trash_chunk(); - - /* Choose the header browsing function. */ - switch (action) { - case ACT_HTTP_REPLACE_VAL: - return http_legacy_replace_header(idx, msg, name, name_len, str, re, output); - case ACT_HTTP_REPLACE_HDR: - return http_legacy_replace_full_header(idx, msg, name, name_len, str, re, output); - default: /* impossible */ - return -1; - } -} - -static int http_transform_header(struct stream* s, struct http_msg *msg, - const char* name, unsigned int name_len, - struct list *fmt, struct my_regex *re, - int action) -{ - struct buffer *replace; - int ret = -1; - - replace = alloc_trash_chunk(); - if (!replace) - goto leave; - - replace->data = build_logline(s, replace->area, replace->size, fmt); - if (replace->data >= replace->size - 1) - goto leave; - - ret = http_transform_header_str(s, msg, name, name_len, replace->area, - re, action); - - leave: - free_trash_chunk(replace); - return ret; -} - -/* Handle Expect: 100-continue for HTTP/1.1 messages if necessary. */ -static void http_handle_expect_hdr(struct stream *s, struct channel *req, struct http_msg *msg) -{ - /* If we have HTTP/1.1 message with a body and Expect: 100-continue, - * then we must send an HTTP/1.1 100 Continue intermediate response. - */ - if (msg->msg_state == HTTP_MSG_BODY && (msg->flags & HTTP_MSGF_VER_11) && - (msg->flags & (HTTP_MSGF_CNT_LEN|HTTP_MSGF_TE_CHNK))) { - struct hdr_ctx ctx; - ctx.idx = 0; - /* Expect is allowed in 1.1, look for it */ - if (http_find_header2("Expect", 6, ci_head(req), &s->txn->hdr_idx, &ctx) && - unlikely(ctx.vlen == 12 && strncasecmp(ctx.line+ctx.val, "100-continue", 12) == 0)) { - co_inject(&s->res, HTTP_100.ptr, HTTP_100.len); - http_remove_header2(&s->txn->req, &s->txn->hdr_idx, &ctx); - } - } -} - -/* - * Build an HTTP Early Hint HTTP 103 response header with as name and with a value - * built according to log line format. - * If is NULL, it is allocated and the HTTP 103 response first - * line is inserted before the header. If an error occurred is - * released and NULL is returned. On success the updated buffer is returned. - */ -static struct buffer *http_apply_early_hint_rule(struct stream* s, struct buffer *early_hints, - const char* name, unsigned int name_len, - struct list *fmt) -{ - if (!early_hints) { - early_hints = alloc_trash_chunk(); - if (!early_hints) - goto fail; - if (!chunk_memcat(early_hints, HTTP_103.ptr, HTTP_103.len)) - goto fail; - } - - if (!chunk_memcat(early_hints, name, name_len) || !chunk_memcat(early_hints, ": ", 2)) - goto fail; - - early_hints->data += build_logline(s, b_tail(early_hints), b_room(early_hints), fmt); - if (!chunk_memcat(early_hints, "\r\n", 2)) - goto fail; - - return early_hints; - - fail: - free_trash_chunk(early_hints); - return NULL; -} - -/* Sends an HTTP 103 response. Before sending it, the last CRLF finishing the - * response is added. If an error occurred or if another response was already - * sent, this function does nothing. - */ -static void http_send_early_hints(struct stream *s, struct buffer *early_hints) -{ - struct channel *chn = s->txn->rsp.chn; - char *cur_ptr = ci_head(chn); - int ret; - - /* If a response was already sent, skip early hints */ - if (s->txn->status > 0) - return; - - if (!chunk_memcat(early_hints, "\r\n", 2)) - return; - - ret = b_rep_blk(&chn->buf, cur_ptr, cur_ptr, b_head(early_hints), b_data(early_hints)); - c_adv(chn, ret); - chn->total += ret; -} - -/* Executes the http-request rules for stream , proxy and - * transaction . Returns the verdict of the first rule that prevents - * further processing of the request (auth, deny, ...), and defaults to - * HTTP_RULE_RES_STOP if it executed all rules or stopped on an allow, or - * HTTP_RULE_RES_CONT if the last rule was reached. It may set the TX_CLTARPIT - * on txn->flags if it encounters a tarpit rule. If is not NULL - * and a deny/tarpit rule is matched, it will be filled with this rule's deny - * status. - */ -enum rule_result -http_req_get_intercept_rule(struct proxy *px, struct list *rules, struct stream *s, int *deny_status) -{ - struct session *sess = strm_sess(s); - struct http_txn *txn = s->txn; - struct act_rule *rule; - struct hdr_ctx ctx; - const char *auth_realm; - struct buffer *early_hints = NULL; - enum rule_result rule_ret = HTTP_RULE_RES_CONT; - int act_flags = 0; - int len; - - /* If "the current_rule_list" match the executed rule list, we are in - * resume condition. If a resume is needed it is always in the action - * and never in the ACL or converters. In this case, we initialise the - * current rule, and go to the action execution point. - */ - if (s->current_rule) { - rule = s->current_rule; - s->current_rule = NULL; - if (s->current_rule_list == rules) - goto resume_execution; - } - s->current_rule_list = rules; - - list_for_each_entry(rule, rules, list) { - - /* check optional condition */ - if (rule->cond) { - int ret; - - ret = acl_exec_cond(rule->cond, px, sess, s, SMP_OPT_DIR_REQ|SMP_OPT_FINAL); - ret = acl_pass(ret); - - if (rule->cond->pol == ACL_COND_UNLESS) - ret = !ret; - - if (!ret) /* condition not matched */ - continue; - } - - act_flags |= ACT_FLAG_FIRST; -resume_execution: - switch (rule->action) { - case ACT_ACTION_ALLOW: - rule_ret = HTTP_RULE_RES_STOP; - goto end; - - case ACT_ACTION_DENY: - if (deny_status) - *deny_status = rule->deny_status; - rule_ret = HTTP_RULE_RES_DENY; - goto end; - - case ACT_HTTP_REQ_TARPIT: - txn->flags |= TX_CLTARPIT; - if (deny_status) - *deny_status = rule->deny_status; - rule_ret = HTTP_RULE_RES_DENY; - goto end; - - case ACT_HTTP_REQ_AUTH: - /* Be sure to send any pending HTTP 103 response first */ - if (early_hints) { - http_send_early_hints(s, early_hints); - free_trash_chunk(early_hints); - early_hints = NULL; - } - /* Auth might be performed on regular http-req rules as well as on stats */ - auth_realm = rule->arg.auth.realm; - if (!auth_realm) { - if (px->uri_auth && rules == &px->uri_auth->http_req_rules) - auth_realm = STATS_DEFAULT_REALM; - else - auth_realm = px->id; - } - /* send 401/407 depending on whether we use a proxy or not. We still - * count one error, because normal browsing won't significantly - * increase the counter but brute force attempts will. - */ - chunk_printf(&trash, (txn->flags & TX_USE_PX_CONN) ? HTTP_407_fmt : HTTP_401_fmt, auth_realm); - txn->status = (txn->flags & TX_USE_PX_CONN) ? 407 : 401; - http_reply_and_close(s, txn->status, &trash); - stream_inc_http_err_ctr(s); - rule_ret = HTTP_RULE_RES_ABRT; - goto end; - - case ACT_HTTP_REDIR: - /* Be sure to send any pending HTTP 103 response first */ - if (early_hints) { - http_send_early_hints(s, early_hints); - free_trash_chunk(early_hints); - early_hints = NULL; - } - rule_ret = HTTP_RULE_RES_DONE; - if (!http_apply_redirect_rule(rule->arg.redir, s, txn)) - rule_ret = HTTP_RULE_RES_BADREQ; - goto end; - - case ACT_HTTP_SET_NICE: - s->task->nice = rule->arg.nice; - break; - - case ACT_HTTP_SET_TOS: - conn_set_tos(objt_conn(sess->origin), rule->arg.tos); - break; - - case ACT_HTTP_SET_MARK: - conn_set_mark(objt_conn(sess->origin), rule->arg.mark); - break; - - case ACT_HTTP_SET_LOGL: - s->logs.level = rule->arg.loglevel; - break; - - case ACT_HTTP_REPLACE_HDR: - case ACT_HTTP_REPLACE_VAL: - if (http_transform_header(s, &txn->req, rule->arg.hdr_add.name, - rule->arg.hdr_add.name_len, - &rule->arg.hdr_add.fmt, - rule->arg.hdr_add.re, rule->action)) { - rule_ret = HTTP_RULE_RES_BADREQ; - goto end; - } - break; - - case ACT_HTTP_DEL_HDR: - ctx.idx = 0; - /* remove all occurrences of the header */ - while (http_find_header2(rule->arg.hdr_add.name, rule->arg.hdr_add.name_len, - ci_head(txn->req.chn), &txn->hdr_idx, &ctx)) { - http_remove_header2(&txn->req, &txn->hdr_idx, &ctx); - } - break; - - case ACT_HTTP_SET_HDR: - case ACT_HTTP_ADD_HDR: { - /* The scope of the trash buffer must be limited to this function. The - * build_logline() function can execute a lot of other function which - * can use the trash buffer. So for limiting the scope of this global - * buffer, we build first the header value using build_logline, and - * after we store the header name. - */ - struct buffer *replace; - - replace = alloc_trash_chunk(); - if (!replace) { - rule_ret = HTTP_RULE_RES_BADREQ; - goto end; - } - - len = rule->arg.hdr_add.name_len + 2, - len += build_logline(s, replace->area + len, - replace->size - len, - &rule->arg.hdr_add.fmt); - memcpy(replace->area, rule->arg.hdr_add.name, - rule->arg.hdr_add.name_len); - replace->area[rule->arg.hdr_add.name_len] = ':'; - replace->area[rule->arg.hdr_add.name_len + 1] = ' '; - replace->data = len; - - if (rule->action == ACT_HTTP_SET_HDR) { - /* remove all occurrences of the header */ - ctx.idx = 0; - while (http_find_header2(rule->arg.hdr_add.name, rule->arg.hdr_add.name_len, - ci_head(txn->req.chn), &txn->hdr_idx, &ctx)) { - http_remove_header2(&txn->req, &txn->hdr_idx, &ctx); - } - } - - if (http_header_add_tail2(&txn->req, &txn->hdr_idx, replace->area, replace->data) < 0) { - static unsigned char rate_limit = 0; - - if ((rate_limit++ & 255) == 0) { - replace->area[rule->arg.hdr_add.name_len] = 0; - send_log(px, LOG_WARNING, "Proxy %s failed to add or set the request header '%s' for request #%u. You might need to increase tune.maxrewrite.", px->id, - replace->area, s->uniq_id); - } - - _HA_ATOMIC_ADD(&sess->fe->fe_counters.failed_rewrites, 1); - if (sess->fe != s->be) - _HA_ATOMIC_ADD(&s->be->be_counters.failed_rewrites, 1); - if (sess->listener->counters) - _HA_ATOMIC_ADD(&sess->listener->counters->failed_rewrites, 1); - } - - free_trash_chunk(replace); - break; - } - - case ACT_HTTP_DEL_ACL: - case ACT_HTTP_DEL_MAP: { - struct pat_ref *ref; - struct buffer *key; - - /* collect reference */ - ref = pat_ref_lookup(rule->arg.map.ref); - if (!ref) - continue; - - /* allocate key */ - key = alloc_trash_chunk(); - if (!key) { - rule_ret = HTTP_RULE_RES_BADREQ; - goto end; - } - - /* collect key */ - key->data = build_logline(s, key->area, key->size, - &rule->arg.map.key); - key->area[key->data] = '\0'; - - /* perform update */ - /* returned code: 1=ok, 0=ko */ - HA_SPIN_LOCK(PATREF_LOCK, &ref->lock); - pat_ref_delete(ref, key->area); - HA_SPIN_UNLOCK(PATREF_LOCK, &ref->lock); - - free_trash_chunk(key); - break; - } - - case ACT_HTTP_ADD_ACL: { - struct pat_ref *ref; - struct buffer *key; - - /* collect reference */ - ref = pat_ref_lookup(rule->arg.map.ref); - if (!ref) - continue; - - /* allocate key */ - key = alloc_trash_chunk(); - if (!key) { - rule_ret = HTTP_RULE_RES_BADREQ; - goto end; - } - - /* collect key */ - key->data = build_logline(s, key->area, key->size, - &rule->arg.map.key); - key->area[key->data] = '\0'; - - /* perform update */ - /* add entry only if it does not already exist */ - HA_SPIN_LOCK(PATREF_LOCK, &ref->lock); - if (pat_ref_find_elt(ref, key->area) == NULL) - pat_ref_add(ref, key->area, NULL, NULL); - HA_SPIN_UNLOCK(PATREF_LOCK, &ref->lock); - - free_trash_chunk(key); - break; - } - - case ACT_HTTP_SET_MAP: { - struct pat_ref *ref; - struct buffer *key, *value; - - /* collect reference */ - ref = pat_ref_lookup(rule->arg.map.ref); - if (!ref) - continue; - - /* allocate key */ - key = alloc_trash_chunk(); - if (!key) { - rule_ret = HTTP_RULE_RES_BADREQ; - goto end; - } - - /* allocate value */ - value = alloc_trash_chunk(); - if (!value) { - free_trash_chunk(key); - rule_ret = HTTP_RULE_RES_BADREQ; - goto end; - } - - /* collect key */ - key->data = build_logline(s, key->area, key->size, - &rule->arg.map.key); - key->area[key->data] = '\0'; - - /* collect value */ - value->data = build_logline(s, value->area, - value->size, - &rule->arg.map.value); - value->area[value->data] = '\0'; - - /* perform update */ - HA_SPIN_LOCK(PATREF_LOCK, &ref->lock); - if (pat_ref_find_elt(ref, key->area) != NULL) - /* update entry if it exists */ - pat_ref_set(ref, key->area, value->area, NULL); - else - /* insert a new entry */ - pat_ref_add(ref, key->area, value->area, NULL); - HA_SPIN_UNLOCK(PATREF_LOCK, &ref->lock); - - free_trash_chunk(key); - free_trash_chunk(value); - break; - } - - case ACT_HTTP_EARLY_HINT: - if (!(txn->req.flags & HTTP_MSGF_VER_11)) - break; - early_hints = http_apply_early_hint_rule(s, early_hints, - rule->arg.early_hint.name, - rule->arg.early_hint.name_len, - &rule->arg.early_hint.fmt); - if (!early_hints) { - rule_ret = HTTP_RULE_RES_DONE; - goto end; - } - break; - case ACT_CUSTOM: - if ((s->req.flags & CF_READ_ERROR) || - ((s->req.flags & (CF_SHUTR|CF_READ_NULL)) && - (px->options & PR_O_ABRT_CLOSE))) - act_flags |= ACT_FLAG_FINAL; - - switch (rule->action_ptr(rule, px, s->sess, s, act_flags)) { - case ACT_RET_ERR: - case ACT_RET_CONT: - break; - case ACT_RET_STOP: - rule_ret = HTTP_RULE_RES_STOP; - goto end; - case ACT_RET_DONE: - rule_ret = HTTP_RULE_RES_DONE; - goto end; - case ACT_RET_YIELD: - s->current_rule = rule; - rule_ret = HTTP_RULE_RES_YIELD; - goto end; - } - break; - - case ACT_ACTION_TRK_SC0 ... ACT_ACTION_TRK_SCMAX: - /* Note: only the first valid tracking parameter of each - * applies. - */ - - if (stkctr_entry(&s->stkctr[trk_idx(rule->action)]) == NULL) { - struct stktable *t; - struct stksess *ts; - struct stktable_key *key; - void *ptr1, *ptr2; - - t = rule->arg.trk_ctr.table.t; - key = stktable_fetch_key(t, s->be, sess, s, SMP_OPT_DIR_REQ | SMP_OPT_FINAL, rule->arg.trk_ctr.expr, NULL); - - if (key && (ts = stktable_get_entry(t, key))) { - stream_track_stkctr(&s->stkctr[trk_idx(rule->action)], t, ts); - - /* let's count a new HTTP request as it's the first time we do it */ - ptr1 = stktable_data_ptr(t, ts, STKTABLE_DT_HTTP_REQ_CNT); - ptr2 = stktable_data_ptr(t, ts, STKTABLE_DT_HTTP_REQ_RATE); - if (ptr1 || ptr2) { - HA_RWLOCK_WRLOCK(STK_SESS_LOCK, &ts->lock); - - if (ptr1) - stktable_data_cast(ptr1, http_req_cnt)++; - - if (ptr2) - update_freq_ctr_period(&stktable_data_cast(ptr2, http_req_rate), - t->data_arg[STKTABLE_DT_HTTP_REQ_RATE].u, 1); - - HA_RWLOCK_WRUNLOCK(STK_SESS_LOCK, &ts->lock); - - /* If data was modified, we need to touch to re-schedule sync */ - stktable_touch_local(t, ts, 0); - } - - stkctr_set_flags(&s->stkctr[trk_idx(rule->action)], STKCTR_TRACK_CONTENT); - if (sess->fe != s->be) - stkctr_set_flags(&s->stkctr[trk_idx(rule->action)], STKCTR_TRACK_BACKEND); - } - } - break; - - /* other flags exists, but normally, they never be matched. */ - default: - break; - } - } - - end: - if (early_hints) { - http_send_early_hints(s, early_hints); - free_trash_chunk(early_hints); - } - - /* we reached the end of the rules, nothing to report */ - return rule_ret; -} - - -/* Executes the http-response rules for stream and proxy . It - * returns one of 5 possible statuses: HTTP_RULE_RES_CONT, HTTP_RULE_RES_STOP, - * HTTP_RULE_RES_DONE, HTTP_RULE_RES_YIELD, or HTTP_RULE_RES_BADREQ. If *CONT - * is returned, the process can continue the evaluation of next rule list. If - * *STOP or *DONE is returned, the process must stop the evaluation. If *BADREQ - * is returned, it means the operation could not be processed and a server error - * must be returned. It may set the TX_SVDENY on txn->flags if it encounters a - * deny rule. If *YIELD is returned, the caller must call again the function - * with the same context. - */ -enum rule_result -http_res_get_intercept_rule(struct proxy *px, struct list *rules, struct stream *s) -{ - struct session *sess = strm_sess(s); - struct http_txn *txn = s->txn; - struct act_rule *rule; - struct hdr_ctx ctx; - enum rule_result rule_ret = HTTP_RULE_RES_CONT; - int act_flags = 0; - - /* If "the current_rule_list" match the executed rule list, we are in - * resume condition. If a resume is needed it is always in the action - * and never in the ACL or converters. In this case, we initialise the - * current rule, and go to the action execution point. - */ - if (s->current_rule) { - rule = s->current_rule; - s->current_rule = NULL; - if (s->current_rule_list == rules) - goto resume_execution; - } - s->current_rule_list = rules; - - list_for_each_entry(rule, rules, list) { - - /* check optional condition */ - if (rule->cond) { - int ret; - - ret = acl_exec_cond(rule->cond, px, sess, s, SMP_OPT_DIR_RES|SMP_OPT_FINAL); - ret = acl_pass(ret); - - if (rule->cond->pol == ACL_COND_UNLESS) - ret = !ret; - - if (!ret) /* condition not matched */ - continue; - } - - act_flags |= ACT_FLAG_FIRST; -resume_execution: - switch (rule->action) { - case ACT_ACTION_ALLOW: - rule_ret = HTTP_RULE_RES_STOP; /* "allow" rules are OK */ - goto end; - - case ACT_ACTION_DENY: - txn->flags |= TX_SVDENY; - rule_ret = HTTP_RULE_RES_STOP; - goto end; - - case ACT_HTTP_SET_NICE: - s->task->nice = rule->arg.nice; - break; - - case ACT_HTTP_SET_TOS: - conn_set_tos(objt_conn(sess->origin), rule->arg.tos); - break; - - case ACT_HTTP_SET_MARK: - conn_set_mark(objt_conn(sess->origin), rule->arg.mark); - break; - - case ACT_HTTP_SET_LOGL: - s->logs.level = rule->arg.loglevel; - break; - - case ACT_HTTP_REPLACE_HDR: - case ACT_HTTP_REPLACE_VAL: - if (http_transform_header(s, &txn->rsp, rule->arg.hdr_add.name, - rule->arg.hdr_add.name_len, - &rule->arg.hdr_add.fmt, - rule->arg.hdr_add.re, rule->action)) { - rule_ret = HTTP_RULE_RES_BADREQ; - goto end; - } - break; - - case ACT_HTTP_DEL_HDR: - ctx.idx = 0; - /* remove all occurrences of the header */ - while (http_find_header2(rule->arg.hdr_add.name, rule->arg.hdr_add.name_len, - ci_head(txn->rsp.chn), &txn->hdr_idx, &ctx)) { - http_remove_header2(&txn->rsp, &txn->hdr_idx, &ctx); - } - break; - - case ACT_HTTP_SET_HDR: - case ACT_HTTP_ADD_HDR: { - struct buffer *replace; - - replace = alloc_trash_chunk(); - if (!replace) { - rule_ret = HTTP_RULE_RES_BADREQ; - goto end; - } - - chunk_printf(replace, "%s: ", rule->arg.hdr_add.name); - memcpy(replace->area, rule->arg.hdr_add.name, - rule->arg.hdr_add.name_len); - replace->data = rule->arg.hdr_add.name_len; - replace->area[replace->data++] = ':'; - replace->area[replace->data++] = ' '; - replace->data += build_logline(s, - replace->area + replace->data, - replace->size - replace->data, - &rule->arg.hdr_add.fmt); - - if (rule->action == ACT_HTTP_SET_HDR) { - /* remove all occurrences of the header */ - ctx.idx = 0; - while (http_find_header2(rule->arg.hdr_add.name, rule->arg.hdr_add.name_len, - ci_head(txn->rsp.chn), &txn->hdr_idx, &ctx)) { - http_remove_header2(&txn->rsp, &txn->hdr_idx, &ctx); - } - } - - if (http_header_add_tail2(&txn->rsp, &txn->hdr_idx, replace->area, replace->data) < 0) { - static unsigned char rate_limit = 0; - - if ((rate_limit++ & 255) == 0) { - replace->area[rule->arg.hdr_add.name_len] = 0; - send_log(px, LOG_WARNING, "Proxy %s failed to add or set the response header '%s' for request #%u. You might need to increase tune.maxrewrite.", px->id, - replace->area, s->uniq_id); - } - - _HA_ATOMIC_ADD(&sess->fe->fe_counters.failed_rewrites, 1); - if (sess->fe != s->be) - _HA_ATOMIC_ADD(&s->be->be_counters.failed_rewrites, 1); - if (sess->listener->counters) - _HA_ATOMIC_ADD(&sess->listener->counters->failed_rewrites, 1); - if (objt_server(s->target)) - _HA_ATOMIC_ADD(&objt_server(s->target)->counters.failed_rewrites, 1); - } - - free_trash_chunk(replace); - break; - } - - case ACT_HTTP_DEL_ACL: - case ACT_HTTP_DEL_MAP: { - struct pat_ref *ref; - struct buffer *key; - - /* collect reference */ - ref = pat_ref_lookup(rule->arg.map.ref); - if (!ref) - continue; - - /* allocate key */ - key = alloc_trash_chunk(); - if (!key) { - rule_ret = HTTP_RULE_RES_BADREQ; - goto end; - } - - /* collect key */ - key->data = build_logline(s, key->area, key->size, - &rule->arg.map.key); - key->area[key->data] = '\0'; - - /* perform update */ - /* returned code: 1=ok, 0=ko */ - HA_SPIN_LOCK(PATREF_LOCK, &ref->lock); - pat_ref_delete(ref, key->area); - HA_SPIN_UNLOCK(PATREF_LOCK, &ref->lock); - - free_trash_chunk(key); - break; - } - - case ACT_HTTP_ADD_ACL: { - struct pat_ref *ref; - struct buffer *key; - - /* collect reference */ - ref = pat_ref_lookup(rule->arg.map.ref); - if (!ref) - continue; - - /* allocate key */ - key = alloc_trash_chunk(); - if (!key) { - rule_ret = HTTP_RULE_RES_BADREQ; - goto end; - } - - /* collect key */ - key->data = build_logline(s, key->area, key->size, - &rule->arg.map.key); - key->area[key->data] = '\0'; - - /* perform update */ - /* check if the entry already exists */ - HA_SPIN_LOCK(PATREF_LOCK, &ref->lock); - if (pat_ref_find_elt(ref, key->area) == NULL) - pat_ref_add(ref, key->area, NULL, NULL); - HA_SPIN_UNLOCK(PATREF_LOCK, &ref->lock); - - free_trash_chunk(key); - break; - } - - case ACT_HTTP_SET_MAP: { - struct pat_ref *ref; - struct buffer *key, *value; - - /* collect reference */ - ref = pat_ref_lookup(rule->arg.map.ref); - if (!ref) - continue; - - /* allocate key */ - key = alloc_trash_chunk(); - if (!key) { - rule_ret = HTTP_RULE_RES_BADREQ; - goto end; - } - - /* allocate value */ - value = alloc_trash_chunk(); - if (!value) { - free_trash_chunk(key); - rule_ret = HTTP_RULE_RES_BADREQ; - goto end; - } - - /* collect key */ - key->data = build_logline(s, key->area, key->size, - &rule->arg.map.key); - key->area[key->data] = '\0'; - - /* collect value */ - value->data = build_logline(s, value->area, - value->size, - &rule->arg.map.value); - value->area[value->data] = '\0'; - - /* perform update */ - HA_SPIN_LOCK(PATREF_LOCK, &ref->lock); - if (pat_ref_find_elt(ref, key->area) != NULL) - /* update entry if it exists */ - pat_ref_set(ref, key->area, value->area, NULL); - else - /* insert a new entry */ - pat_ref_add(ref, key->area, value->area, NULL); - HA_SPIN_UNLOCK(PATREF_LOCK, &ref->lock); - free_trash_chunk(key); - free_trash_chunk(value); - break; - } - - case ACT_HTTP_REDIR: - rule_ret = HTTP_RULE_RES_DONE; - if (!http_apply_redirect_rule(rule->arg.redir, s, txn)) - rule_ret = HTTP_RULE_RES_BADREQ; - goto end; - - case ACT_ACTION_TRK_SC0 ... ACT_ACTION_TRK_SCMAX: - /* Note: only the first valid tracking parameter of each - * applies. - */ - - if (stkctr_entry(&s->stkctr[trk_idx(rule->action)]) == NULL) { - struct stktable *t; - struct stksess *ts; - struct stktable_key *key; - void *ptr; - - t = rule->arg.trk_ctr.table.t; - key = stktable_fetch_key(t, s->be, sess, s, SMP_OPT_DIR_RES | SMP_OPT_FINAL, rule->arg.trk_ctr.expr, NULL); - - if (key && (ts = stktable_get_entry(t, key))) { - stream_track_stkctr(&s->stkctr[trk_idx(rule->action)], t, ts); - - HA_RWLOCK_WRLOCK(STK_SESS_LOCK, &ts->lock); - - /* let's count a new HTTP request as it's the first time we do it */ - ptr = stktable_data_ptr(t, ts, STKTABLE_DT_HTTP_REQ_CNT); - if (ptr) - stktable_data_cast(ptr, http_req_cnt)++; - - ptr = stktable_data_ptr(t, ts, STKTABLE_DT_HTTP_REQ_RATE); - if (ptr) - update_freq_ctr_period(&stktable_data_cast(ptr, http_req_rate), - t->data_arg[STKTABLE_DT_HTTP_REQ_RATE].u, 1); - - /* When the client triggers a 4xx from the server, it's most often due - * to a missing object or permission. These events should be tracked - * because if they happen often, it may indicate a brute force or a - * vulnerability scan. Normally this is done when receiving the response - * but here we're tracking after this ought to have been done so we have - * to do it on purpose. - */ - if ((unsigned)(txn->status - 400) < 100) { - ptr = stktable_data_ptr(t, ts, STKTABLE_DT_HTTP_ERR_CNT); - if (ptr) - stktable_data_cast(ptr, http_err_cnt)++; - - ptr = stktable_data_ptr(t, ts, STKTABLE_DT_HTTP_ERR_RATE); - if (ptr) - update_freq_ctr_period(&stktable_data_cast(ptr, http_err_rate), - t->data_arg[STKTABLE_DT_HTTP_ERR_RATE].u, 1); - } - - HA_RWLOCK_WRUNLOCK(STK_SESS_LOCK, &ts->lock); - - /* If data was modified, we need to touch to re-schedule sync */ - stktable_touch_local(t, ts, 0); - - stkctr_set_flags(&s->stkctr[trk_idx(rule->action)], STKCTR_TRACK_CONTENT); - if (sess->fe != s->be) - stkctr_set_flags(&s->stkctr[trk_idx(rule->action)], STKCTR_TRACK_BACKEND); - - } - } - break; - - case ACT_CUSTOM: - if ((s->req.flags & CF_READ_ERROR) || - ((s->req.flags & (CF_SHUTR|CF_READ_NULL)) && - (px->options & PR_O_ABRT_CLOSE))) - act_flags |= ACT_FLAG_FINAL; - - switch (rule->action_ptr(rule, px, s->sess, s, act_flags)) { - case ACT_RET_ERR: - case ACT_RET_CONT: - break; - case ACT_RET_STOP: - rule_ret = HTTP_RULE_RES_STOP; - goto end; - case ACT_RET_DONE: - rule_ret = HTTP_RULE_RES_DONE; - goto end; - case ACT_RET_YIELD: - s->current_rule = rule; - rule_ret = HTTP_RULE_RES_YIELD; - goto end; - } - break; - - /* other flags exists, but normally, they never be matched. */ - default: - break; - } - } - - end: - /* we reached the end of the rules, nothing to report */ - return rule_ret; -} - - -/* Perform an HTTP redirect based on the information in . The function - * returns non-zero on success, or zero in case of a, irrecoverable error such - * as too large a request to build a valid response. - */ -int http_apply_redirect_rule(struct redirect_rule *rule, struct stream *s, struct http_txn *txn) -{ - struct http_msg *req = &txn->req; - struct http_msg *res = &txn->rsp; - const char *msg_fmt; - struct buffer *chunk; - int ret = 0; - - if (IS_HTX_STRM(s)) - return htx_apply_redirect_rule(rule, s, txn); - - chunk = alloc_trash_chunk(); - if (!chunk) - goto leave; - - /* build redirect message */ - switch(rule->code) { - case 308: - msg_fmt = HTTP_308; - break; - case 307: - msg_fmt = HTTP_307; - break; - case 303: - msg_fmt = HTTP_303; - break; - case 301: - msg_fmt = HTTP_301; - break; - case 302: - default: - msg_fmt = HTTP_302; - break; - } - - if (unlikely(!chunk_strcpy(chunk, msg_fmt))) - goto leave; - - switch(rule->type) { - case REDIRECT_TYPE_SCHEME: { - const char *path; - const char *host; - struct hdr_ctx ctx; - int pathlen; - int hostlen; - - host = ""; - hostlen = 0; - ctx.idx = 0; - if (http_find_header2("Host", 4, ci_head(req->chn), &txn->hdr_idx, &ctx)) { - host = ctx.line + ctx.val; - hostlen = ctx.vlen; - } - - path = http_txn_get_path(txn); - /* build message using path */ - if (path) { - pathlen = req->sl.rq.u_l + (ci_head(req->chn) + req->sl.rq.u) - path; - if (rule->flags & REDIRECT_FLAG_DROP_QS) { - int qs = 0; - while (qs < pathlen) { - if (path[qs] == '?') { - pathlen = qs; - break; - } - qs++; - } - } - } else { - path = "/"; - pathlen = 1; - } - - if (rule->rdr_str) { /* this is an old "redirect" rule */ - /* check if we can add scheme + "://" + host + path */ - if (chunk->data + rule->rdr_len + 3 + hostlen + pathlen > chunk->size - 4) - goto leave; - - /* add scheme */ - memcpy(chunk->area + chunk->data, rule->rdr_str, - rule->rdr_len); - chunk->data += rule->rdr_len; - } - else { - /* add scheme with executing log format */ - chunk->data += build_logline(s, - chunk->area + chunk->data, - chunk->size - chunk->data, - &rule->rdr_fmt); - - /* check if we can add scheme + "://" + host + path */ - if (chunk->data + 3 + hostlen + pathlen > chunk->size - 4) - goto leave; - } - /* add "://" */ - memcpy(chunk->area + chunk->data, "://", 3); - chunk->data += 3; - - /* add host */ - memcpy(chunk->area + chunk->data, host, hostlen); - chunk->data += hostlen; - - /* add path */ - memcpy(chunk->area + chunk->data, path, pathlen); - chunk->data += pathlen; - - /* append a slash at the end of the location if needed and missing */ - if (chunk->data && chunk->area[chunk->data - 1] != '/' && - (rule->flags & REDIRECT_FLAG_APPEND_SLASH)) { - if (chunk->data > chunk->size - 5) - goto leave; - chunk->area[chunk->data] = '/'; - chunk->data++; - } - - break; - } - case REDIRECT_TYPE_PREFIX: { - const char *path; - int pathlen; - - path = http_txn_get_path(txn); - /* build message using path */ - if (path) { - pathlen = req->sl.rq.u_l + (ci_head(req->chn) + req->sl.rq.u) - path; - if (rule->flags & REDIRECT_FLAG_DROP_QS) { - int qs = 0; - while (qs < pathlen) { - if (path[qs] == '?') { - pathlen = qs; - break; - } - qs++; - } - } - } else { - path = "/"; - pathlen = 1; - } - - if (rule->rdr_str) { /* this is an old "redirect" rule */ - if (chunk->data + rule->rdr_len + pathlen > chunk->size - 4) - goto leave; - - /* add prefix. Note that if prefix == "/", we don't want to - * add anything, otherwise it makes it hard for the user to - * configure a self-redirection. - */ - if (rule->rdr_len != 1 || *rule->rdr_str != '/') { - memcpy(chunk->area + chunk->data, - rule->rdr_str, rule->rdr_len); - chunk->data += rule->rdr_len; - } - } - else { - /* add prefix with executing log format */ - chunk->data += build_logline(s, - chunk->area + chunk->data, - chunk->size - chunk->data, - &rule->rdr_fmt); - - /* Check length */ - if (chunk->data + pathlen > chunk->size - 4) - goto leave; - } - - /* add path */ - memcpy(chunk->area + chunk->data, path, pathlen); - chunk->data += pathlen; - - /* append a slash at the end of the location if needed and missing */ - if (chunk->data && chunk->area[chunk->data - 1] != '/' && - (rule->flags & REDIRECT_FLAG_APPEND_SLASH)) { - if (chunk->data > chunk->size - 5) - goto leave; - chunk->area[chunk->data] = '/'; - chunk->data++; - } - - break; - } - case REDIRECT_TYPE_LOCATION: - default: - if (rule->rdr_str) { /* this is an old "redirect" rule */ - if (chunk->data + rule->rdr_len > chunk->size - 4) - goto leave; - - /* add location */ - memcpy(chunk->area + chunk->data, rule->rdr_str, - rule->rdr_len); - chunk->data += rule->rdr_len; - } - else { - /* add location with executing log format */ - chunk->data += build_logline(s, - chunk->area + chunk->data, - chunk->size - chunk->data, - &rule->rdr_fmt); - - /* Check left length */ - if (chunk->data > chunk->size - 4) - goto leave; - } - break; - } - - if (rule->cookie_len) { - memcpy(chunk->area + chunk->data, "\r\nSet-Cookie: ", 14); - chunk->data += 14; - memcpy(chunk->area + chunk->data, rule->cookie_str, - rule->cookie_len); - chunk->data += rule->cookie_len; - } - - /* add end of headers and the keep-alive/close status. */ - txn->status = rule->code; - /* let's log the request time */ - s->logs.tv_request = now; - - if (((!(req->flags & HTTP_MSGF_TE_CHNK) && !req->body_len) || (req->msg_state == HTTP_MSG_DONE)) && - ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_SCL || - (txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_KAL)) { - /* keep-alive possible */ - if (!(req->flags & HTTP_MSGF_VER_11)) { - if (unlikely(txn->flags & TX_USE_PX_CONN)) { - memcpy(chunk->area + chunk->data, - "\r\nProxy-Connection: keep-alive", 30); - chunk->data += 30; - } else { - memcpy(chunk->area + chunk->data, - "\r\nConnection: keep-alive", 24); - chunk->data += 24; - } - } - memcpy(chunk->area + chunk->data, "\r\n\r\n", 4); - chunk->data += 4; - FLT_STRM_CB(s, flt_http_reply(s, txn->status, chunk)); - co_inject(res->chn, chunk->area, chunk->data); - /* "eat" the request */ - b_del(&req->chn->buf, req->sov); - req->next -= req->sov; - req->sov = 0; - s->req.analysers = AN_REQ_HTTP_XFER_BODY | (s->req.analysers & AN_REQ_FLT_END); - s->res.analysers = AN_RES_HTTP_XFER_BODY | (s->res.analysers & AN_RES_FLT_END); - req->msg_state = HTTP_MSG_CLOSED; - res->msg_state = HTTP_MSG_DONE; - /* Trim any possible response */ - b_set_data(&res->chn->buf, co_data(res->chn)); - res->next = res->sov = 0; - /* let the server side turn to SI_ST_CLO */ - channel_shutw_now(req->chn); - } else { - /* keep-alive not possible */ - if (unlikely(txn->flags & TX_USE_PX_CONN)) { - memcpy(chunk->area + chunk->data, - "\r\nProxy-Connection: close\r\n\r\n", 29); - chunk->data += 29; - } else { - memcpy(chunk->area + chunk->data, - "\r\nConnection: close\r\n\r\n", 23); - chunk->data += 23; - } - http_reply_and_close(s, txn->status, chunk); - req->chn->analysers &= AN_REQ_FLT_END; - } - - if (!(s->flags & SF_ERR_MASK)) - s->flags |= SF_ERR_LOCAL; - if (!(s->flags & SF_FINST_MASK)) - s->flags |= SF_FINST_R; - - ret = 1; - leave: - free_trash_chunk(chunk); - return ret; -} - -/* This stream analyser runs all HTTP request processing which is common to - * frontends and backends, which means blocking ACLs, filters, connection-close, - * reqadd, stats and redirects. This is performed for the designated proxy. - * It returns 1 if the processing can continue on next analysers, or zero if it - * either needs more data or wants to immediately abort the request (eg: deny, - * error, ...). - */ -int http_process_req_common(struct stream *s, struct channel *req, int an_bit, struct proxy *px) -{ - struct session *sess = s->sess; - struct http_txn *txn = s->txn; - struct http_msg *msg = &txn->req; - struct redirect_rule *rule; - struct cond_wordlist *wl; - enum rule_result verdict; - int deny_status = HTTP_ERR_403; - struct connection *conn = objt_conn(sess->origin); - - if (IS_HTX_STRM(s)) - return htx_process_req_common(s, req, an_bit, px); - - if (unlikely(msg->msg_state < HTTP_MSG_BODY)) { - /* we need more data */ - goto return_prx_yield; - } - - DPRINTF(stderr,"[%u] %s: stream=%p b=%p, exp(r,w)=%u,%u bf=%08x bh=%lu analysers=%02x\n", - now_ms, __FUNCTION__, - s, - req, - req->rex, req->wex, - req->flags, - ci_data(req), - req->analysers); - - /* just in case we have some per-backend tracking. Only called the first - * execution of the analyser. */ - if (!s->current_rule || s->current_rule_list != &px->http_req_rules) - stream_inc_be_http_req_ctr(s); - - /* evaluate http-request rules */ - if (!LIST_ISEMPTY(&px->http_req_rules)) { - verdict = http_req_get_intercept_rule(px, &px->http_req_rules, s, &deny_status); - - switch (verdict) { - case HTTP_RULE_RES_YIELD: /* some data miss, call the function later. */ - goto return_prx_yield; - - case HTTP_RULE_RES_CONT: - case HTTP_RULE_RES_STOP: /* nothing to do */ - break; - - case HTTP_RULE_RES_DENY: /* deny or tarpit */ - if (txn->flags & TX_CLTARPIT) - goto tarpit; - goto deny; - - case HTTP_RULE_RES_ABRT: /* abort request, response already sent. Eg: auth */ - goto return_prx_cond; - - case HTTP_RULE_RES_DONE: /* OK, but terminate request processing (eg: redirect) */ - goto done; - - case HTTP_RULE_RES_BADREQ: /* failed with a bad request */ - goto return_bad_req; - } - } - - if (conn && (conn->flags & CO_FL_EARLY_DATA) && - (conn->flags & (CO_FL_EARLY_SSL_HS | CO_FL_HANDSHAKE))) { - struct hdr_ctx ctx; - - ctx.idx = 0; - if (!http_find_header2("Early-Data", strlen("Early-Data"), - ci_head(&s->req), &txn->hdr_idx, &ctx)) { - if (unlikely(http_header_add_tail2(&txn->req, - &txn->hdr_idx, "Early-Data: 1", - strlen("Early-Data: 1")) < 0)) { - goto return_bad_req; - } - } - - } - - /* OK at this stage, we know that the request was accepted according to - * the http-request rules, we can check for the stats. Note that the - * URI is detected *before* the req* rules in order not to be affected - * by a possible reqrep, while they are processed *after* so that a - * reqdeny can still block them. This clearly needs to change in 1.6! - */ - if (!s->target && stats_check_uri(&s->si[1], txn, px)) { - s->target = &http_stats_applet.obj_type; - if (unlikely(!si_register_handler(&s->si[1], objt_applet(s->target)))) { - txn->status = 500; - s->logs.tv_request = now; - http_reply_and_close(s, txn->status, http_error_message(s)); - - if (!(s->flags & SF_ERR_MASK)) - s->flags |= SF_ERR_RESOURCE; - goto return_prx_cond; - } - - /* parse the whole stats request and extract the relevant information */ - http_handle_stats(s, req); - verdict = http_req_get_intercept_rule(px, &px->uri_auth->http_req_rules, s, &deny_status); - /* not all actions implemented: deny, allow, auth */ - - if (verdict == HTTP_RULE_RES_DENY) /* stats http-request deny */ - goto deny; - - if (verdict == HTTP_RULE_RES_ABRT) /* stats auth / stats http-request auth */ - goto return_prx_cond; - } - - /* evaluate the req* rules except reqadd */ - if (px->req_exp != NULL) { - if (apply_filters_to_request(s, req, px) < 0) - goto return_bad_req; - - if (txn->flags & TX_CLDENY) - goto deny; - - if (txn->flags & TX_CLTARPIT) { - deny_status = HTTP_ERR_500; - goto tarpit; - } - } - - /* add request headers from the rule sets in the same order */ - list_for_each_entry(wl, &px->req_add, list) { - if (wl->cond) { - int ret = acl_exec_cond(wl->cond, px, sess, s, SMP_OPT_DIR_REQ|SMP_OPT_FINAL); - ret = acl_pass(ret); - if (((struct acl_cond *)wl->cond)->pol == ACL_COND_UNLESS) - ret = !ret; - if (!ret) - continue; - } - - if (unlikely(http_header_add_tail2(&txn->req, &txn->hdr_idx, wl->s, strlen(wl->s)) < 0)) - goto return_bad_req; - } - - - /* Proceed with the stats now. */ - if (unlikely(objt_applet(s->target))) { - /* process the stats request now */ - if (sess->fe == s->be) /* report it if the request was intercepted by the frontend */ - _HA_ATOMIC_ADD(&sess->fe->fe_counters.intercepted_req, 1); - - http_handle_expect_hdr(s, req, msg); - - if (!(s->flags & SF_ERR_MASK)) // this is not really an error but it is - s->flags |= SF_ERR_LOCAL; // to mark that it comes from the proxy - if (!(s->flags & SF_FINST_MASK)) - s->flags |= SF_FINST_R; - - /* enable the minimally required analyzers to handle keep-alive and compression on the HTTP response */ - req->analysers &= (AN_REQ_HTTP_BODY | AN_REQ_FLT_HTTP_HDRS | AN_REQ_FLT_END); - req->analysers &= ~AN_REQ_FLT_XFER_DATA; - req->analysers |= AN_REQ_HTTP_XFER_BODY; - - req->flags |= CF_SEND_DONTWAIT; - s->flags |= SF_ASSIGNED; - goto done; - } - - /* check whether we have some ACLs set to redirect this request */ - list_for_each_entry(rule, &px->redirect_rules, list) { - if (rule->cond) { - int ret; - - ret = acl_exec_cond(rule->cond, px, sess, s, SMP_OPT_DIR_REQ|SMP_OPT_FINAL); - ret = acl_pass(ret); - if (rule->cond->pol == ACL_COND_UNLESS) - ret = !ret; - if (!ret) - continue; - } - if (!http_apply_redirect_rule(rule, s, txn)) - goto return_bad_req; - goto done; - } - - /* POST requests may be accompanied with an "Expect: 100-Continue" header. - * If this happens, then the data will not come immediately, so we must - * send all what we have without waiting. Note that due to the small gain - * in waiting for the body of the request, it's easier to simply put the - * CF_SEND_DONTWAIT flag any time. It's a one-shot flag so it will remove - * itself once used. - */ - req->flags |= CF_SEND_DONTWAIT; - - done: /* done with this analyser, continue with next ones that the calling - * points will have set, if any. - */ - req->analyse_exp = TICK_ETERNITY; - done_without_exp: /* done with this analyser, but dont reset the analyse_exp. */ - req->analysers &= ~an_bit; - return 1; - - tarpit: - /* Allow cookie logging - */ - if (s->be->cookie_name || sess->fe->capture_name) - manage_client_side_cookies(s, req); - - /* When a connection is tarpitted, we use the tarpit timeout, - * which may be the same as the connect timeout if unspecified. - * If unset, then set it to zero because we really want it to - * eventually expire. We build the tarpit as an analyser. - */ - channel_erase(&s->req); - - /* wipe the request out so that we can drop the connection early - * if the client closes first. - */ - channel_dont_connect(req); - - txn->status = http_err_codes[deny_status]; - - req->analysers &= AN_REQ_FLT_END; /* remove switching rules etc... */ - req->analysers |= AN_REQ_HTTP_TARPIT; - req->analyse_exp = tick_add_ifset(now_ms, s->be->timeout.tarpit); - if (!req->analyse_exp) - req->analyse_exp = tick_add(now_ms, 0); - stream_inc_http_err_ctr(s); - _HA_ATOMIC_ADD(&sess->fe->fe_counters.denied_req, 1); - if (sess->fe != s->be) - _HA_ATOMIC_ADD(&s->be->be_counters.denied_req, 1); - if (sess->listener->counters) - _HA_ATOMIC_ADD(&sess->listener->counters->denied_req, 1); - goto done_without_exp; - - deny: /* this request was blocked (denied) */ - - /* Allow cookie logging - */ - if (s->be->cookie_name || sess->fe->capture_name) - manage_client_side_cookies(s, req); - - txn->flags |= TX_CLDENY; - txn->status = http_err_codes[deny_status]; - s->logs.tv_request = now; - http_reply_and_close(s, txn->status, http_error_message(s)); - stream_inc_http_err_ctr(s); - _HA_ATOMIC_ADD(&sess->fe->fe_counters.denied_req, 1); - if (sess->fe != s->be) - _HA_ATOMIC_ADD(&s->be->be_counters.denied_req, 1); - if (sess->listener->counters) - _HA_ATOMIC_ADD(&sess->listener->counters->denied_req, 1); - goto return_prx_cond; - - return_bad_req: - /* We centralize bad requests processing here */ - if (unlikely(msg->msg_state == HTTP_MSG_ERROR) || msg->err_pos >= 0) { - /* we detected a parsing error. We want to archive this request - * in the dedicated proxy area for later troubleshooting. - */ - http_capture_bad_message(sess->fe, s, msg, msg->err_state, sess->fe); - } - - txn->req.err_state = txn->req.msg_state; - txn->req.msg_state = HTTP_MSG_ERROR; - txn->status = 400; - http_reply_and_close(s, txn->status, http_error_message(s)); - - _HA_ATOMIC_ADD(&sess->fe->fe_counters.failed_req, 1); - if (sess->listener->counters) - _HA_ATOMIC_ADD(&sess->listener->counters->failed_req, 1); - - return_prx_cond: - if (!(s->flags & SF_ERR_MASK)) - s->flags |= SF_ERR_PRXCOND; - if (!(s->flags & SF_FINST_MASK)) - s->flags |= SF_FINST_R; - - req->analysers &= AN_REQ_FLT_END; - req->analyse_exp = TICK_ETERNITY; - return 0; - - return_prx_yield: - channel_dont_connect(req); - return 0; -} - -/* This function performs all the processing enabled for the current request. - * It returns 1 if the processing can continue on next analysers, or zero if it - * needs more data, encounters an error, or wants to immediately abort the - * request. It relies on buffers flags, and updates s->req.analysers. - */ -int http_process_request(struct stream *s, struct channel *req, int an_bit) -{ - struct session *sess = s->sess; - struct http_txn *txn = s->txn; - struct http_msg *msg = &txn->req; - struct connection *cli_conn = objt_conn(strm_sess(s)->origin); - - if (IS_HTX_STRM(s)) - return htx_process_request(s, req, an_bit); - - if (unlikely(msg->msg_state < HTTP_MSG_BODY)) { - /* we need more data */ - channel_dont_connect(req); - return 0; - } - - DPRINTF(stderr,"[%u] %s: stream=%p b=%p, exp(r,w)=%u,%u bf=%08x bh=%lu analysers=%02x\n", - now_ms, __FUNCTION__, - s, - req, - req->rex, req->wex, - req->flags, - ci_data(req), - req->analysers); - - /* - * Right now, we know that we have processed the entire headers - * and that unwanted requests have been filtered out. We can do - * whatever we want with the remaining request. Also, now we - * may have separate values for ->fe, ->be. - */ - - /* - * If HTTP PROXY is set we simply get remote server address parsing - * incoming request. Note that this requires that a connection is - * allocated on the server side. - */ - if ((s->be->options & PR_O_HTTP_PROXY) && !(s->flags & SF_ADDR_SET)) { - struct connection *conn; - char *path; - - /* Note that for now we don't reuse existing proxy connections */ - if (unlikely((conn = cs_conn(si_alloc_cs(&s->si[1], NULL))) == NULL)) { - txn->req.err_state = txn->req.msg_state; - txn->req.msg_state = HTTP_MSG_ERROR; - txn->status = 500; - req->analysers &= AN_REQ_FLT_END; - http_reply_and_close(s, txn->status, http_error_message(s)); - - if (!(s->flags & SF_ERR_MASK)) - s->flags |= SF_ERR_RESOURCE; - if (!(s->flags & SF_FINST_MASK)) - s->flags |= SF_FINST_R; - - return 0; - } - - path = http_txn_get_path(txn); - if (url2sa(ci_head(req) + msg->sl.rq.u, - path ? path - (ci_head(req) + msg->sl.rq.u) : msg->sl.rq.u_l, - &conn->addr.to, NULL) == -1) - goto return_bad_req; - - /* if the path was found, we have to remove everything between - * ci_head(req) + msg->sl.rq.u and path (excluded). If it was not - * found, we need to replace from ci_head(req) + msg->sl.rq.u for - * u_l characters by a single "/". - */ - if (path) { - char *cur_ptr = ci_head(req); - char *cur_end = cur_ptr + txn->req.sl.rq.l; - int delta; - - delta = b_rep_blk(&req->buf, cur_ptr + msg->sl.rq.u, path, NULL, 0); - http_msg_move_end(&txn->req, delta); - cur_end += delta; - if (http_parse_reqline(&txn->req, HTTP_MSG_RQMETH, cur_ptr, cur_end + 1, NULL, NULL) == NULL) - goto return_bad_req; - } - else { - char *cur_ptr = ci_head(req); - char *cur_end = cur_ptr + txn->req.sl.rq.l; - int delta; - - delta = b_rep_blk(&req->buf, cur_ptr + msg->sl.rq.u, - cur_ptr + msg->sl.rq.u + msg->sl.rq.u_l, "/", 1); - http_msg_move_end(&txn->req, delta); - cur_end += delta; - if (http_parse_reqline(&txn->req, HTTP_MSG_RQMETH, cur_ptr, cur_end + 1, NULL, NULL) == NULL) - goto return_bad_req; - } - conn->target = &s->be->obj_type; - } - - /* - * 7: Now we can work with the cookies. - * Note that doing so might move headers in the request, but - * the fields will stay coherent and the URI will not move. - * This should only be performed in the backend. - */ - if (s->be->cookie_name || sess->fe->capture_name) - manage_client_side_cookies(s, req); - - /* add unique-id if "header-unique-id" is specified */ - - if (!LIST_ISEMPTY(&sess->fe->format_unique_id) && !s->unique_id) { - if ((s->unique_id = pool_alloc(pool_head_uniqueid)) == NULL) - goto return_bad_req; - s->unique_id[0] = '\0'; - build_logline(s, s->unique_id, UNIQUEID_LEN, &sess->fe->format_unique_id); - } - - if (sess->fe->header_unique_id && s->unique_id) { - if (chunk_printf(&trash, "%s: %s", sess->fe->header_unique_id, s->unique_id) < 0) - goto return_bad_req; - if (unlikely(http_header_add_tail2(&txn->req, &txn->hdr_idx, trash.area, trash.data) < 0)) - goto return_bad_req; - } - - /* - * 9: add X-Forwarded-For if either the frontend or the backend - * asks for it. - */ - if ((sess->fe->options | s->be->options) & PR_O_FWDFOR) { - struct hdr_ctx ctx = { .idx = 0 }; - if (!((sess->fe->options | s->be->options) & PR_O_FF_ALWAYS) && - http_find_header2(s->be->fwdfor_hdr_len ? s->be->fwdfor_hdr_name : sess->fe->fwdfor_hdr_name, - s->be->fwdfor_hdr_len ? s->be->fwdfor_hdr_len : sess->fe->fwdfor_hdr_len, - ci_head(req), &txn->hdr_idx, &ctx)) { - /* The header is set to be added only if none is present - * and we found it, so don't do anything. - */ - } - else if (cli_conn && cli_conn->addr.from.ss_family == AF_INET) { - /* Add an X-Forwarded-For header unless the source IP is - * in the 'except' network range. - */ - if ((!sess->fe->except_mask.s_addr || - (((struct sockaddr_in *)&cli_conn->addr.from)->sin_addr.s_addr & sess->fe->except_mask.s_addr) - != sess->fe->except_net.s_addr) && - (!s->be->except_mask.s_addr || - (((struct sockaddr_in *)&cli_conn->addr.from)->sin_addr.s_addr & s->be->except_mask.s_addr) - != s->be->except_net.s_addr)) { - int len; - unsigned char *pn; - pn = (unsigned char *)&((struct sockaddr_in *)&cli_conn->addr.from)->sin_addr; - - /* Note: we rely on the backend to get the header name to be used for - * x-forwarded-for, because the header is really meant for the backends. - * However, if the backend did not specify any option, we have to rely - * on the frontend's header name. - */ - if (s->be->fwdfor_hdr_len) { - len = s->be->fwdfor_hdr_len; - memcpy(trash.area, - s->be->fwdfor_hdr_name, len); - } else { - len = sess->fe->fwdfor_hdr_len; - memcpy(trash.area, - sess->fe->fwdfor_hdr_name, len); - } - len += snprintf(trash.area + len, - trash.size - len, - ": %d.%d.%d.%d", pn[0], pn[1], - pn[2], pn[3]); - - if (unlikely(http_header_add_tail2(&txn->req, &txn->hdr_idx, trash.area, len) < 0)) - goto return_bad_req; - } - } - else if (cli_conn && cli_conn->addr.from.ss_family == AF_INET6) { - /* FIXME: for the sake of completeness, we should also support - * 'except' here, although it is mostly useless in this case. - */ - int len; - char pn[INET6_ADDRSTRLEN]; - inet_ntop(AF_INET6, - (const void *)&((struct sockaddr_in6 *)(&cli_conn->addr.from))->sin6_addr, - pn, sizeof(pn)); - - /* Note: we rely on the backend to get the header name to be used for - * x-forwarded-for, because the header is really meant for the backends. - * However, if the backend did not specify any option, we have to rely - * on the frontend's header name. - */ - if (s->be->fwdfor_hdr_len) { - len = s->be->fwdfor_hdr_len; - memcpy(trash.area, s->be->fwdfor_hdr_name, - len); - } else { - len = sess->fe->fwdfor_hdr_len; - memcpy(trash.area, sess->fe->fwdfor_hdr_name, - len); - } - len += snprintf(trash.area + len, trash.size - len, - ": %s", pn); - - if (unlikely(http_header_add_tail2(&txn->req, &txn->hdr_idx, trash.area, len) < 0)) - goto return_bad_req; - } - } - - /* - * 10: add X-Original-To if either the frontend or the backend - * asks for it. - */ - if ((sess->fe->options | s->be->options) & PR_O_ORGTO) { - - /* FIXME: don't know if IPv6 can handle that case too. */ - if (cli_conn && cli_conn->addr.from.ss_family == AF_INET) { - /* Add an X-Original-To header unless the destination IP is - * in the 'except' network range. - */ - conn_get_to_addr(cli_conn); - - if (cli_conn->addr.to.ss_family == AF_INET && - ((!sess->fe->except_mask_to.s_addr || - (((struct sockaddr_in *)&cli_conn->addr.to)->sin_addr.s_addr & sess->fe->except_mask_to.s_addr) - != sess->fe->except_to.s_addr) && - (!s->be->except_mask_to.s_addr || - (((struct sockaddr_in *)&cli_conn->addr.to)->sin_addr.s_addr & s->be->except_mask_to.s_addr) - != s->be->except_to.s_addr))) { - int len; - unsigned char *pn; - pn = (unsigned char *)&((struct sockaddr_in *)&cli_conn->addr.to)->sin_addr; - - /* Note: we rely on the backend to get the header name to be used for - * x-original-to, because the header is really meant for the backends. - * However, if the backend did not specify any option, we have to rely - * on the frontend's header name. - */ - if (s->be->orgto_hdr_len) { - len = s->be->orgto_hdr_len; - memcpy(trash.area, - s->be->orgto_hdr_name, len); - } else { - len = sess->fe->orgto_hdr_len; - memcpy(trash.area, - sess->fe->orgto_hdr_name, len); - } - len += snprintf(trash.area + len, - trash.size - len, - ": %d.%d.%d.%d", pn[0], pn[1], - pn[2], pn[3]); - - if (unlikely(http_header_add_tail2(&txn->req, &txn->hdr_idx, trash.area, len) < 0)) - goto return_bad_req; - } - } - } - - /* 11: add "Connection: close" or "Connection: keep-alive" if needed and not yet set. - * If an "Upgrade" token is found, the header is left untouched in order not to have - * to deal with some servers bugs : some of them fail an Upgrade if anything but - * "Upgrade" is present in the Connection header. - */ - if (!(txn->flags & TX_HDR_CONN_UPG) && (txn->flags & TX_CON_WANT_MSK) != TX_CON_WANT_TUN) { - unsigned int want_flags = 0; - - if (msg->flags & HTTP_MSGF_VER_11) { - if ((txn->flags & TX_CON_WANT_MSK) >= TX_CON_WANT_SCL && - !((sess->fe->options2|s->be->options2) & PR_O2_FAKE_KA)) - want_flags |= TX_CON_CLO_SET; - } else { - if ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_KAL || - ((sess->fe->options2|s->be->options2) & PR_O2_FAKE_KA)) - want_flags |= TX_CON_KAL_SET; - } - - if (want_flags != (txn->flags & (TX_CON_CLO_SET|TX_CON_KAL_SET))) - http_change_connection_header(txn, msg, want_flags); - } - - - /* If we have no server assigned yet and we're balancing on url_param - * with a POST request, we may be interested in checking the body for - * that parameter. This will be done in another analyser. - */ - if (!(s->flags & (SF_ASSIGNED|SF_DIRECT)) && - s->txn->meth == HTTP_METH_POST && - (s->be->lbprm.algo & BE_LB_ALGO) == BE_LB_ALGO_PH && - (msg->flags & (HTTP_MSGF_CNT_LEN|HTTP_MSGF_TE_CHNK))) { - channel_dont_connect(req); - req->analysers |= AN_REQ_HTTP_BODY; - } - - req->analysers &= ~AN_REQ_FLT_XFER_DATA; - req->analysers |= AN_REQ_HTTP_XFER_BODY; - - /* We expect some data from the client. Unless we know for sure - * we already have a full request, we have to re-enable quick-ack - * in case we previously disabled it, otherwise we might cause - * the client to delay further data. - */ - if ((sess->listener->options & LI_O_NOQUICKACK) && - ((msg->flags & HTTP_MSGF_TE_CHNK) || - (msg->body_len > ci_data(req) - txn->req.eoh - 2))) - conn_set_quickack(cli_conn, 1); - - /************************************************************* - * OK, that's finished for the headers. We have done what we * - * could. Let's switch to the DATA state. * - ************************************************************/ - req->analyse_exp = TICK_ETERNITY; - req->analysers &= ~an_bit; - - s->logs.tv_request = now; - /* OK let's go on with the BODY now */ - return 1; - - return_bad_req: /* let's centralize all bad requests */ - if (unlikely(msg->msg_state == HTTP_MSG_ERROR) || msg->err_pos >= 0) { - /* we detected a parsing error. We want to archive this request - * in the dedicated proxy area for later troubleshooting. - */ - http_capture_bad_message(sess->fe, s, msg, msg->err_state, sess->fe); - } - - txn->req.err_state = txn->req.msg_state; - txn->req.msg_state = HTTP_MSG_ERROR; - txn->status = 400; - req->analysers &= AN_REQ_FLT_END; - http_reply_and_close(s, txn->status, http_error_message(s)); - - _HA_ATOMIC_ADD(&sess->fe->fe_counters.failed_req, 1); - if (sess->listener->counters) - _HA_ATOMIC_ADD(&sess->listener->counters->failed_req, 1); - - if (!(s->flags & SF_ERR_MASK)) - s->flags |= SF_ERR_PRXCOND; - if (!(s->flags & SF_FINST_MASK)) - s->flags |= SF_FINST_R; - return 0; -} - -/* This function is an analyser which processes the HTTP tarpit. It always - * returns zero, at the beginning because it prevents any other processing - * from occurring, and at the end because it terminates the request. - */ -int http_process_tarpit(struct stream *s, struct channel *req, int an_bit) -{ - struct http_txn *txn = s->txn; - - if (IS_HTX_STRM(s)) - return htx_process_tarpit(s, req, an_bit); - - /* This connection is being tarpitted. The CLIENT side has - * already set the connect expiration date to the right - * timeout. We just have to check that the client is still - * there and that the timeout has not expired. - */ - channel_dont_connect(req); - if ((req->flags & (CF_SHUTR|CF_READ_ERROR)) == 0 && - !tick_is_expired(req->analyse_exp, now_ms)) - return 0; - - /* We will set the queue timer to the time spent, just for - * logging purposes. We fake a 500 server error, so that the - * attacker will not suspect his connection has been tarpitted. - * It will not cause trouble to the logs because we can exclude - * the tarpitted connections by filtering on the 'PT' status flags. - */ - s->logs.t_queue = tv_ms_elapsed(&s->logs.tv_accept, &now); - - if (!(req->flags & CF_READ_ERROR)) - http_reply_and_close(s, txn->status, http_error_message(s)); - - req->analysers &= AN_REQ_FLT_END; - req->analyse_exp = TICK_ETERNITY; - - if (!(s->flags & SF_ERR_MASK)) - s->flags |= SF_ERR_PRXCOND; - if (!(s->flags & SF_FINST_MASK)) - s->flags |= SF_FINST_T; - return 0; -} - -/* This function is an analyser which waits for the HTTP request body. It waits - * for either the buffer to be full, or the full advertised contents to have - * reached the buffer. It must only be called after the standard HTTP request - * processing has occurred, because it expects the request to be parsed and will - * look for the Expect header. It may send a 100-Continue interim response. It - * takes in input any state starting from HTTP_MSG_BODY and leaves with one of - * HTTP_MSG_CHK_SIZE, HTTP_MSG_DATA or HTTP_MSG_TRAILERS. It returns zero if it - * needs to read more data, or 1 once it has completed its analysis. - */ -int http_wait_for_request_body(struct stream *s, struct channel *req, int an_bit) -{ - struct session *sess = s->sess; - struct http_txn *txn = s->txn; - struct http_msg *msg = &s->txn->req; - - if (IS_HTX_STRM(s)) - return htx_wait_for_request_body(s, req, an_bit); - - if (msg->msg_state < HTTP_MSG_BODY) - goto missing_data; - - /* We have to parse the HTTP request body to find any required data. - * "balance url_param check_post" should have been the only way to get - * into this. We were brought here after HTTP header analysis, so all - * related structures are ready. - */ - if (msg->msg_state < HTTP_MSG_CHUNK_SIZE) { - http_handle_expect_hdr(s, req, msg); - - /* we have msg->sov which points to the first byte of message body. - * ci_head(req) still points to the beginning of the message. We - * must save the body in msg->next because it survives buffer - * re-alignments. - */ - msg->next = msg->sov; - - if (msg->flags & HTTP_MSGF_TE_CHNK) - msg->msg_state = HTTP_MSG_CHUNK_SIZE; - else - msg->msg_state = HTTP_MSG_DATA; - } - - if (!(msg->flags & HTTP_MSGF_TE_CHNK)) { - /* We're in content-length mode, we just have to wait for enough data. */ - if (http_body_bytes(msg) < msg->body_len) - goto missing_data; - - /* OK we have everything we need now */ - goto http_end; - } - - /* OK here we're parsing a chunked-encoded message */ - - if (msg->msg_state == HTTP_MSG_CHUNK_SIZE) { - /* read the chunk size and assign it to ->chunk_len, then - * set ->sov and ->next to point to the body and switch to DATA or - * TRAILERS state. - */ - unsigned int chunk; - int ret = h1_parse_chunk_size(&req->buf, co_data(req) + msg->next, c_data(req), &chunk); - - if (!ret) - goto missing_data; - else if (ret < 0) { - msg->err_pos = ci_data(req) + ret; - if (msg->err_pos < 0) - msg->err_pos += req->buf.size; - stream_inc_http_err_ctr(s); - goto return_bad_req; - } - - msg->chunk_len = chunk; - msg->body_len += chunk; - - msg->sol = ret; - msg->next += ret; - msg->msg_state = msg->chunk_len ? HTTP_MSG_DATA : HTTP_MSG_TRAILERS; - } - - /* Now we're in HTTP_MSG_DATA or HTTP_MSG_TRAILERS state. - * We have the first data byte is in msg->sov + msg->sol. We're waiting - * for at least a whole chunk or the whole content length bytes after - * msg->sov + msg->sol. - */ - if (msg->msg_state == HTTP_MSG_TRAILERS) - goto http_end; - - if (http_body_bytes(msg) >= msg->body_len) /* we have enough bytes now */ - goto http_end; - - missing_data: - /* we get here if we need to wait for more data. If the buffer is full, - * we have the maximum we can expect. - */ - if (channel_full(req, global.tune.maxrewrite)) - goto http_end; - - if ((req->flags & CF_READ_TIMEOUT) || tick_is_expired(req->analyse_exp, now_ms)) { - txn->status = 408; - http_reply_and_close(s, txn->status, http_error_message(s)); - - if (!(s->flags & SF_ERR_MASK)) - s->flags |= SF_ERR_CLITO; - if (!(s->flags & SF_FINST_MASK)) - s->flags |= SF_FINST_D; - goto return_err_msg; - } - - /* we get here if we need to wait for more data */ - if (!(req->flags & (CF_SHUTR | CF_READ_ERROR))) { - /* Not enough data. We'll re-use the http-request - * timeout here. Ideally, we should set the timeout - * relative to the accept() date. We just set the - * request timeout once at the beginning of the - * request. - */ - channel_dont_connect(req); - if (!tick_isset(req->analyse_exp)) - req->analyse_exp = tick_add_ifset(now_ms, s->be->timeout.httpreq); - return 0; - } - - http_end: - /* The situation will not evolve, so let's give up on the analysis. */ - s->logs.tv_request = now; /* update the request timer to reflect full request */ - req->analysers &= ~an_bit; - req->analyse_exp = TICK_ETERNITY; - return 1; - - return_bad_req: /* let's centralize all bad requests */ - txn->req.err_state = txn->req.msg_state; - txn->req.msg_state = HTTP_MSG_ERROR; - txn->status = 400; - http_reply_and_close(s, txn->status, http_error_message(s)); - - if (!(s->flags & SF_ERR_MASK)) - s->flags |= SF_ERR_PRXCOND; - if (!(s->flags & SF_FINST_MASK)) - s->flags |= SF_FINST_R; - - return_err_msg: - req->analysers &= AN_REQ_FLT_END; - _HA_ATOMIC_ADD(&sess->fe->fe_counters.failed_req, 1); - if (sess->listener->counters) - _HA_ATOMIC_ADD(&sess->listener->counters->failed_req, 1); - return 0; -} - -/* send a server's name with an outgoing request over an established connection. - * Note: this function is designed to be called once the request has been scheduled - * for being forwarded. This is the reason why it rewinds the buffer before - * proceeding. - */ -int http_send_name_header(struct stream *s, struct proxy* be, const char* srv_name) { - - struct hdr_ctx ctx; - struct http_txn *txn = s->txn; - char *hdr_name = be->server_id_hdr_name; - int hdr_name_len = be->server_id_hdr_len; - struct channel *chn = txn->req.chn; - char *hdr_val; - unsigned int old_o, old_i; - - if (IS_HTX_STRM(s)) - return htx_send_name_header(s, be, srv_name); - ctx.idx = 0; - - old_o = http_hdr_rewind(&txn->req); - if (old_o) { - /* The request was already skipped, let's restore it */ - c_rew(chn, old_o); - txn->req.next += old_o; - txn->req.sov += old_o; - } - - old_i = ci_data(chn); - while (http_find_header2(hdr_name, hdr_name_len, ci_head(txn->req.chn), &txn->hdr_idx, &ctx)) { - /* remove any existing values from the header */ - http_remove_header2(&txn->req, &txn->hdr_idx, &ctx); - } - - /* Add the new header requested with the server value */ - hdr_val = trash.area; - memcpy(hdr_val, hdr_name, hdr_name_len); - hdr_val += hdr_name_len; - *hdr_val++ = ':'; - *hdr_val++ = ' '; - hdr_val += strlcpy2(hdr_val, srv_name, - trash.area + trash.size - hdr_val); - http_header_add_tail2(&txn->req, &txn->hdr_idx, trash.area, - hdr_val - trash.area); - - if (old_o) { - /* If this was a forwarded request, we must readjust the amount of - * data to be forwarded in order to take into account the size - * variations. Note that the current state is >= HTTP_MSG_BODY, - * so we don't have to adjust ->sol. - */ - old_o += ci_data(chn) - old_i; - c_adv(chn, old_o); - txn->req.next -= old_o; - txn->req.sov -= old_o; - } - - return 0; -} - -/* Terminate current transaction and prepare a new one. This is very tricky - * right now but it works. - */ -void http_end_txn_clean_session(struct stream *s) -{ - int prev_status = s->txn->status; - struct proxy *fe = strm_fe(s); - struct proxy *be = s->be; - struct conn_stream *cs; - struct connection *srv_conn; - struct server *srv; - unsigned int prev_flags = s->txn->flags; - - /* FIXME: We need a more portable way of releasing a backend's and a - * server's connections. We need a safer way to reinitialize buffer - * flags. We also need a more accurate method for computing per-request - * data. - */ - cs = objt_cs(s->si[1].end); - srv_conn = cs_conn(cs); - - /* unless we're doing keep-alive, we want to quickly close the connection - * to the server. - */ - if (((s->txn->flags & TX_CON_WANT_MSK) != TX_CON_WANT_KAL) || - !si_conn_ready(&s->si[1]) || !srv_conn->owner) { - s->si[1].flags |= SI_FL_NOLINGER | SI_FL_NOHALF; - si_shutr(&s->si[1]); - si_shutw(&s->si[1]); - } - - if (s->flags & SF_BE_ASSIGNED) { - _HA_ATOMIC_SUB(&be->beconn, 1); - if (unlikely(s->srv_conn)) - sess_change_server(s, NULL); - } - - s->logs.t_close = tv_ms_elapsed(&s->logs.tv_accept, &now); - stream_process_counters(s); - - if (s->txn->status) { - int n; - - n = s->txn->status / 100; - if (n < 1 || n > 5) - n = 0; - - if (fe->mode == PR_MODE_HTTP) { - _HA_ATOMIC_ADD(&fe->fe_counters.p.http.rsp[n], 1); - } - if ((s->flags & SF_BE_ASSIGNED) && - (be->mode == PR_MODE_HTTP)) { - _HA_ATOMIC_ADD(&be->be_counters.p.http.rsp[n], 1); - _HA_ATOMIC_ADD(&be->be_counters.p.http.cum_req, 1); - } - } - - /* don't count other requests' data */ - s->logs.bytes_in -= ci_data(&s->req); - s->logs.bytes_out -= ci_data(&s->res); - - /* we may need to know the position in the queue */ - pendconn_free(s); - - /* let's do a final log if we need it */ - if (!LIST_ISEMPTY(&fe->logformat) && s->logs.logwait && - !(s->flags & SF_MONITOR) && - (!(fe->options & PR_O_NULLNOLOG) || s->req.total)) { - s->do_log(s); - } - - /* stop tracking content-based counters */ - stream_stop_content_counters(s); - stream_update_time_stats(s); - - /* reset the profiling counter */ - s->task->calls = 0; - s->task->cpu_time = 0; - s->task->lat_time = 0; - s->task->call_date = ((profiling & HA_PROF_TASKS_MASK) >= HA_PROF_TASKS_AUTO) ? now_mono_time() : 0; - s->call_rate.curr_sec = s->call_rate.curr_ctr = s->call_rate.prev_ctr = 0; - - s->logs.accept_date = date; /* user-visible date for logging */ - s->logs.tv_accept = now; /* corrected date for internal use */ - s->logs.t_handshake = 0; /* There are no handshake in keep alive connection. */ - s->logs.t_idle = -1; - tv_zero(&s->logs.tv_request); - s->logs.t_queue = -1; - s->logs.t_connect = -1; - s->logs.t_data = -1; - s->logs.t_close = 0; - s->logs.prx_queue_pos = 0; /* we get the number of pending conns before us */ - s->logs.srv_queue_pos = 0; /* we will get this number soon */ - - s->logs.bytes_in = s->req.total = ci_data(&s->req); - s->logs.bytes_out = s->res.total = ci_data(&s->res); - - if (objt_server(s->target)) { - if (s->flags & SF_CURR_SESS) { - s->flags &= ~SF_CURR_SESS; - _HA_ATOMIC_SUB(&__objt_server(s->target)->cur_sess, 1); - } - if (may_dequeue_tasks(objt_server(s->target), be)) - process_srv_queue(objt_server(s->target)); - } - - s->target = NULL; - - - /* If we're doing keepalive, first call the mux detach() method - * to let it know we want to detach without freing the connection. - * We then can call si_release_endpoint() to destroy the conn_stream - */ - if (((s->txn->flags & TX_CON_WANT_MSK) != TX_CON_WANT_KAL) || - !si_conn_ready(&s->si[1]) || - (srv_conn && srv_conn->flags & (CO_FL_ERROR | CO_FL_SOCK_RD_SH | CO_FL_SOCK_WR_SH))) - srv_conn = NULL; - else if (!srv_conn->owner) { - srv_conn->owner = s->sess; - /* Add it unconditionally to the session list, it'll be removed - * later if needed by session_check_idle_conn(), once we'll - * have released the endpoint and know if it no longer has - * attached streams, and so an idling connection - */ - if (!session_add_conn(s->sess, srv_conn, s->target)) { - srv_conn->owner = NULL; - /* Try to add the connection to the server idle list. - * If it fails, as the connection no longer has an - * owner, it will be destroy later by - * si_release_endpoint(), anyway - */ - srv_add_to_idle_list(objt_server(srv_conn->target), srv_conn); - srv_conn = NULL; - - } - } - si_release_endpoint(&s->si[1]); - if (srv_conn && srv_conn->owner == s->sess) { - if (session_check_idle_conn(s->sess, srv_conn) != 0) - srv_conn = NULL; - } - - - s->si[1].state = s->si[1].prev_state = SI_ST_INI; - s->si[1].err_type = SI_ET_NONE; - s->si[1].conn_retries = 0; /* used for logging too */ - s->si[1].exp = TICK_ETERNITY; - s->si[1].flags &= SI_FL_ISBACK | SI_FL_DONT_WAKE; /* we're in the context of process_stream */ - s->req.flags &= ~(CF_SHUTW|CF_SHUTW_NOW|CF_AUTO_CONNECT|CF_WRITE_ERROR|CF_STREAMER|CF_STREAMER_FAST|CF_NEVER_WAIT|CF_WAKE_CONNECT|CF_WROTE_DATA); - s->res.flags &= ~(CF_SHUTR|CF_SHUTR_NOW|CF_READ_ATTACHED|CF_READ_ERROR|CF_READ_NOEXP|CF_STREAMER|CF_STREAMER_FAST|CF_WRITE_PARTIAL|CF_NEVER_WAIT|CF_WROTE_DATA); - s->flags &= ~(SF_DIRECT|SF_ASSIGNED|SF_ADDR_SET|SF_BE_ASSIGNED|SF_FORCE_PRST|SF_IGNORE_PRST); - s->flags &= ~(SF_CURR_SESS|SF_REDIRECTABLE|SF_SRV_REUSED); - s->flags &= ~(SF_ERR_MASK|SF_FINST_MASK|SF_REDISP); - - hlua_ctx_destroy(s->hlua); - s->hlua = NULL; - - s->txn->meth = 0; - http_reset_txn(s); - s->txn->flags |= TX_NOT_FIRST | TX_WAIT_NEXT_RQ; - - if (prev_status == 401 || prev_status == 407) { - /* In HTTP keep-alive mode, if we receive a 401, we still have - * a chance of being able to send the visitor again to the same - * server over the same connection. This is required by some - * broken protocols such as NTLM, and anyway whenever there is - * an opportunity for sending the challenge to the proper place, - * it's better to do it (at least it helps with debugging), at - * least for non-deterministic load balancing algorithms. - */ - s->sess->flags |= SESS_FL_PREFER_LAST; - } - - /* Never ever allow to reuse a connection from a non-reuse backend */ - if (srv_conn && (be->options & PR_O_REUSE_MASK) == PR_O_REUSE_NEVR) - srv_conn->flags |= CO_FL_PRIVATE; - - if (fe->options2 & PR_O2_INDEPSTR) - s->si[1].flags |= SI_FL_INDEP_STR; - - if (fe->options2 & PR_O2_NODELAY) { - s->req.flags |= CF_NEVER_WAIT; - s->res.flags |= CF_NEVER_WAIT; - } - - /* we're removing the analysers, we MUST re-enable events detection. - * We don't enable close on the response channel since it's either - * already closed, or in keep-alive with an idle connection handler. - */ - channel_auto_read(&s->req); - channel_auto_close(&s->req); - channel_auto_read(&s->res); - - /* we're in keep-alive with an idle connection, monitor it if not already done */ - if (srv_conn && LIST_ISEMPTY(&srv_conn->list)) { - srv = objt_server(srv_conn->target); - if (srv) { - if (srv_conn->flags & CO_FL_PRIVATE) - LIST_ADD(&srv->priv_conns[tid], &srv_conn->list); - else if (prev_flags & TX_NOT_FIRST) - /* note: we check the request, not the connection, but - * this is valid for strategies SAFE and AGGR, and in - * case of ALWS, we don't care anyway. - */ - LIST_ADD(&srv->safe_conns[tid], &srv_conn->list); - else - LIST_ADD(&srv->idle_conns[tid], &srv_conn->list); - } - } - s->req.analysers = strm_li(s) ? strm_li(s)->analysers : 0; - s->res.analysers = 0; -} - - -/* This function updates the request state machine according to the response - * state machine and buffer flags. It returns 1 if it changes anything (flag - * or state), otherwise zero. It ignores any state before HTTP_MSG_DONE, as - * it is only used to find when a request/response couple is complete. Both - * this function and its equivalent should loop until both return zero. It - * can set its own state to DONE, CLOSING, CLOSED, TUNNEL, ERROR. - */ -int http_sync_req_state(struct stream *s) -{ - struct channel *chn = &s->req; - struct http_txn *txn = s->txn; - unsigned int old_flags = chn->flags; - unsigned int old_state = txn->req.msg_state; - - if (unlikely(txn->req.msg_state < HTTP_MSG_DONE)) - return 0; - - if (txn->req.msg_state == HTTP_MSG_DONE) { - /* No need to read anymore, the request was completely parsed. - * We can shut the read side unless we want to abort_on_close, - * or we have a POST request. The issue with POST requests is - * that some browsers still send a CRLF after the request, and - * this CRLF must be read so that it does not remain in the kernel - * buffers, otherwise a close could cause an RST on some systems - * (eg: Linux). - * Note that if we're using keep-alive on the client side, we'd - * rather poll now and keep the polling enabled for the whole - * stream's life than enabling/disabling it between each - * response and next request. - */ - if (((txn->flags & TX_CON_WANT_MSK) != TX_CON_WANT_SCL) && - ((txn->flags & TX_CON_WANT_MSK) != TX_CON_WANT_KAL) && - !(s->be->options & PR_O_ABRT_CLOSE) && - txn->meth != HTTP_METH_POST) - channel_dont_read(chn); - - /* if the server closes the connection, we want to immediately react - * and close the socket to save packets and syscalls. - */ - s->si[1].flags |= SI_FL_NOHALF; - - /* In any case we've finished parsing the request so we must - * disable Nagle when sending data because 1) we're not going - * to shut this side, and 2) the server is waiting for us to - * send pending data. - */ - chn->flags |= CF_NEVER_WAIT; - - if (txn->rsp.msg_state == HTTP_MSG_ERROR) - goto wait_other_side; - - if (txn->rsp.msg_state < HTTP_MSG_DONE) { - /* The server has not finished to respond, so we - * don't want to move in order not to upset it. - */ - goto wait_other_side; - } - - /* When we get here, it means that both the request and the - * response have finished receiving. Depending on the connection - * mode, we'll have to wait for the last bytes to leave in either - * direction, and sometimes for a close to be effective. - */ - - if ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_SCL) { - /* Server-close mode : queue a connection close to the server */ - if (!(chn->flags & (CF_SHUTW|CF_SHUTW_NOW))) - channel_shutw_now(chn); - } - else if ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_CLO) { - /* Option forceclose is set, or either side wants to close, - * let's enforce it now that we're not expecting any new - * data to come. The caller knows the stream is complete - * once both states are CLOSED. - * - * However, there is an exception if the response - * length is undefined. In this case, we need to wait - * the close from the server. The response will be - * switched in TUNNEL mode until the end. - */ - if (!(txn->rsp.flags & HTTP_MSGF_XFER_LEN) && - txn->rsp.msg_state != HTTP_MSG_CLOSED) - goto check_channel_flags; - - if (!(chn->flags & (CF_SHUTW|CF_SHUTW_NOW))) { - channel_shutr_now(chn); - channel_shutw_now(chn); - } - } - else { - /* The last possible modes are keep-alive and tunnel. Tunnel mode - * will not have any analyser so it needs to poll for reads. - */ - if ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_TUN) { - channel_auto_read(chn); - txn->req.msg_state = HTTP_MSG_TUNNEL; - } - } - - goto check_channel_flags; - } - - if (txn->req.msg_state == HTTP_MSG_CLOSING) { - http_msg_closing: - /* nothing else to forward, just waiting for the output buffer - * to be empty and for the shutw_now to take effect. - */ - if (channel_is_empty(chn)) { - txn->req.msg_state = HTTP_MSG_CLOSED; - goto http_msg_closed; - } - else if (chn->flags & CF_SHUTW) { - txn->req.err_state = txn->req.msg_state; - txn->req.msg_state = HTTP_MSG_ERROR; - } - goto wait_other_side; - } - - if (txn->req.msg_state == HTTP_MSG_CLOSED) { - http_msg_closed: - /* if we don't know whether the server will close, we need to hard close */ - if (txn->rsp.flags & HTTP_MSGF_XFER_LEN) - s->si[1].flags |= SI_FL_NOLINGER; /* we want to close ASAP */ - - /* see above in MSG_DONE why we only do this in these states */ - if (((txn->flags & TX_CON_WANT_MSK) != TX_CON_WANT_SCL) && - ((txn->flags & TX_CON_WANT_MSK) != TX_CON_WANT_KAL) && - !(s->be->options & PR_O_ABRT_CLOSE)) - channel_dont_read(chn); - goto wait_other_side; - } - - check_channel_flags: - /* Here, we are in HTTP_MSG_DONE or HTTP_MSG_TUNNEL */ - if (chn->flags & (CF_SHUTW|CF_SHUTW_NOW)) { - /* if we've just closed an output, let's switch */ - txn->req.msg_state = HTTP_MSG_CLOSING; - goto http_msg_closing; - } - - - wait_other_side: - return txn->req.msg_state != old_state || chn->flags != old_flags; -} - - -/* This function updates the response state machine according to the request - * state machine and buffer flags. It returns 1 if it changes anything (flag - * or state), otherwise zero. It ignores any state before HTTP_MSG_DONE, as - * it is only used to find when a request/response couple is complete. Both - * this function and its equivalent should loop until both return zero. It - * can set its own state to DONE, CLOSING, CLOSED, TUNNEL, ERROR. - */ -int http_sync_res_state(struct stream *s) -{ - struct channel *chn = &s->res; - struct http_txn *txn = s->txn; - unsigned int old_flags = chn->flags; - unsigned int old_state = txn->rsp.msg_state; - - if (unlikely(txn->rsp.msg_state < HTTP_MSG_DONE)) - return 0; - - if (txn->rsp.msg_state == HTTP_MSG_DONE) { - /* In theory, we don't need to read anymore, but we must - * still monitor the server connection for a possible close - * while the request is being uploaded, so we don't disable - * reading. - */ - /* channel_dont_read(chn); */ - - if (txn->req.msg_state == HTTP_MSG_ERROR) - goto wait_other_side; - - if (txn->req.msg_state < HTTP_MSG_DONE) { - /* The client seems to still be sending data, probably - * because we got an error response during an upload. - * We have the choice of either breaking the connection - * or letting it pass through. Let's do the later. - */ - goto wait_other_side; - } - - /* When we get here, it means that both the request and the - * response have finished receiving. Depending on the connection - * mode, we'll have to wait for the last bytes to leave in either - * direction, and sometimes for a close to be effective. - */ - - if ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_SCL) { - /* Server-close mode : shut read and wait for the request - * side to close its output buffer. The caller will detect - * when we're in DONE and the other is in CLOSED and will - * catch that for the final cleanup. - */ - if (!(chn->flags & (CF_SHUTR|CF_SHUTR_NOW))) - channel_shutr_now(chn); - } - else if ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_CLO) { - /* Option forceclose is set, or either side wants to close, - * let's enforce it now that we're not expecting any new - * data to come. The caller knows the stream is complete - * once both states are CLOSED. - */ - if (!(chn->flags & (CF_SHUTW|CF_SHUTW_NOW))) { - channel_shutr_now(chn); - channel_shutw_now(chn); - } - } - else { - /* The last possible modes are keep-alive and tunnel. Tunnel will - * need to forward remaining data. Keep-alive will need to monitor - * for connection closing. - */ - channel_auto_read(chn); - chn->flags |= CF_NEVER_WAIT; - if ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_TUN) - txn->rsp.msg_state = HTTP_MSG_TUNNEL; - } - - goto check_channel_flags; - } - - if (txn->rsp.msg_state == HTTP_MSG_CLOSING) { - http_msg_closing: - /* nothing else to forward, just waiting for the output buffer - * to be empty and for the shutw_now to take effect. - */ - if (channel_is_empty(chn)) { - txn->rsp.msg_state = HTTP_MSG_CLOSED; - goto http_msg_closed; - } - else if (chn->flags & CF_SHUTW) { - txn->rsp.err_state = txn->rsp.msg_state; - txn->rsp.msg_state = HTTP_MSG_ERROR; - _HA_ATOMIC_ADD(&s->be->be_counters.cli_aborts, 1); - if (objt_server(s->target)) - _HA_ATOMIC_ADD(&objt_server(s->target)->counters.cli_aborts, 1); - } - goto wait_other_side; - } - - if (txn->rsp.msg_state == HTTP_MSG_CLOSED) { - http_msg_closed: - /* drop any pending data */ - channel_truncate(chn); - channel_auto_close(chn); - channel_auto_read(chn); - goto wait_other_side; - } - - check_channel_flags: - /* Here, we are in HTTP_MSG_DONE or HTTP_MSG_TUNNEL */ - if (chn->flags & (CF_SHUTW|CF_SHUTW_NOW)) { - /* if we've just closed an output, let's switch */ - txn->rsp.msg_state = HTTP_MSG_CLOSING; - goto http_msg_closing; - } - - wait_other_side: - /* We force the response to leave immediately if we're waiting for the - * other side, since there is no pending shutdown to push it out. - */ - if (!channel_is_empty(chn)) - chn->flags |= CF_SEND_DONTWAIT; - return txn->rsp.msg_state != old_state || chn->flags != old_flags; -} - - -/* Resync the request and response state machines. */ -void http_resync_states(struct stream *s) -{ - struct http_txn *txn = s->txn; -#ifdef DEBUG_FULL - int old_req_state = txn->req.msg_state; - int old_res_state = txn->rsp.msg_state; -#endif - - http_sync_req_state(s); - while (1) { - if (!http_sync_res_state(s)) - break; - if (!http_sync_req_state(s)) - break; - } - - DPRINTF(stderr,"[%u] %s: stream=%p old=%s,%s cur=%s,%s " - "req->analysers=0x%08x res->analysers=0x%08x\n", - now_ms, __FUNCTION__, s, - h1_msg_state_str(old_req_state), h1_msg_state_str(old_res_state), - h1_msg_state_str(txn->req.msg_state), h1_msg_state_str(txn->rsp.msg_state), - s->req.analysers, s->res.analysers); - - - /* OK, both state machines agree on a compatible state. - * There are a few cases we're interested in : - * - HTTP_MSG_CLOSED on both sides means we've reached the end in both - * directions, so let's simply disable both analysers. - * - HTTP_MSG_CLOSED on the response only or HTTP_MSG_ERROR on either - * means we must abort the request. - * - HTTP_MSG_TUNNEL on either means we have to disable analyser on - * corresponding channel. - * - HTTP_MSG_DONE or HTTP_MSG_CLOSED on the request and HTTP_MSG_DONE - * on the response with server-close mode means we've completed one - * request and we must re-initialize the server connection. - */ - if (txn->req.msg_state == HTTP_MSG_CLOSED && - txn->rsp.msg_state == HTTP_MSG_CLOSED) { - s->req.analysers &= AN_REQ_FLT_END; - channel_auto_close(&s->req); - channel_auto_read(&s->req); - s->res.analysers &= AN_RES_FLT_END; - channel_auto_close(&s->res); - channel_auto_read(&s->res); - } - else if (txn->rsp.msg_state == HTTP_MSG_CLOSED || - txn->rsp.msg_state == HTTP_MSG_ERROR || - txn->req.msg_state == HTTP_MSG_ERROR) { - s->res.analysers &= AN_RES_FLT_END; - channel_auto_close(&s->res); - channel_auto_read(&s->res); - s->req.analysers &= AN_REQ_FLT_END; - channel_abort(&s->req); - channel_auto_close(&s->req); - channel_auto_read(&s->req); - channel_truncate(&s->req); - } - else if (txn->req.msg_state == HTTP_MSG_TUNNEL || - txn->rsp.msg_state == HTTP_MSG_TUNNEL) { - if (txn->req.msg_state == HTTP_MSG_TUNNEL) { - s->req.analysers &= AN_REQ_FLT_END; - if (HAS_REQ_DATA_FILTERS(s)) - s->req.analysers |= AN_REQ_FLT_XFER_DATA; - } - if (txn->rsp.msg_state == HTTP_MSG_TUNNEL) { - s->res.analysers &= AN_RES_FLT_END; - if (HAS_RSP_DATA_FILTERS(s)) - s->res.analysers |= AN_RES_FLT_XFER_DATA; - } - channel_auto_close(&s->req); - channel_auto_read(&s->req); - channel_auto_close(&s->res); - channel_auto_read(&s->res); - } - else if ((txn->req.msg_state == HTTP_MSG_DONE || - txn->req.msg_state == HTTP_MSG_CLOSED) && - txn->rsp.msg_state == HTTP_MSG_DONE && - ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_SCL || - (txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_KAL)) { - /* server-close/keep-alive: terminate this transaction, - * possibly killing the server connection and reinitialize - * a fresh-new transaction, but only once we're sure there's - * enough room in the request and response buffer to process - * another request. They must not hold any pending output data - * and the response buffer must realigned - * (realign is done is http_end_txn_clean_session). - */ - if (co_data(&s->req)) - s->req.flags |= CF_WAKE_WRITE; - else if (co_data(&s->res)) - s->res.flags |= CF_WAKE_WRITE; - else { - s->req.analysers = AN_REQ_FLT_END; - s->res.analysers = AN_RES_FLT_END; - txn->flags |= TX_WAIT_CLEANUP; - } - } -} - -/* This function is an analyser which forwards request body (including chunk - * sizes if any). It is called as soon as we must forward, even if we forward - * zero byte. The only situation where it must not be called is when we're in - * tunnel mode and we want to forward till the close. It's used both to forward - * remaining data and to resync after end of body. It expects the msg_state to - * be between MSG_BODY and MSG_DONE (inclusive). It returns zero if it needs to - * read more data, or 1 once we can go on with next request or end the stream. - * When in MSG_DATA or MSG_TRAILERS, it will automatically forward chunk_len - * bytes of pending data + the headers if not already done. - */ -int http_request_forward_body(struct stream *s, struct channel *req, int an_bit) -{ - struct session *sess = s->sess; - struct http_txn *txn = s->txn; - struct http_msg *msg = &s->txn->req; - short status = 0; - int ret; - - if (IS_HTX_STRM(s)) - return htx_request_forward_body(s, req, an_bit); - - DPRINTF(stderr,"[%u] %s: stream=%p b=%p, exp(r,w)=%u,%u bf=%08x bh=%lu analysers=%02x\n", - now_ms, __FUNCTION__, - s, - req, - req->rex, req->wex, - req->flags, - ci_data(req), - req->analysers); - - if (unlikely(msg->msg_state < HTTP_MSG_BODY)) - return 0; - - if ((req->flags & (CF_READ_ERROR|CF_READ_TIMEOUT|CF_WRITE_ERROR|CF_WRITE_TIMEOUT)) || - ((req->flags & CF_SHUTW) && (req->to_forward || co_data(req)))) { - /* Output closed while we were sending data. We must abort and - * wake the other side up. - */ - msg->err_state = msg->msg_state; - msg->msg_state = HTTP_MSG_ERROR; - http_resync_states(s); - return 1; - } - - /* Note that we don't have to send 100-continue back because we don't - * need the data to complete our job, and it's up to the server to - * decide whether to return 100, 417 or anything else in return of - * an "Expect: 100-continue" header. - */ - if (msg->msg_state == HTTP_MSG_BODY) { - msg->msg_state = ((msg->flags & HTTP_MSGF_TE_CHNK) - ? HTTP_MSG_CHUNK_SIZE - : HTTP_MSG_DATA); - - /* TODO/filters: when http-buffer-request option is set or if a - * rule on url_param exists, the first chunk size could be - * already parsed. In that case, msg->next is after the chunk - * size (including the CRLF after the size). So this case should - * be handled to */ - } - - /* Some post-connect processing might want us to refrain from starting to - * forward data. Currently, the only reason for this is "balance url_param" - * whichs need to parse/process the request after we've enabled forwarding. - */ - if (unlikely(msg->flags & HTTP_MSGF_WAIT_CONN)) { - if (!(s->res.flags & CF_READ_ATTACHED)) { - channel_auto_connect(req); - req->flags |= CF_WAKE_CONNECT; - channel_dont_close(req); /* don't fail on early shutr */ - goto waiting; - } - msg->flags &= ~HTTP_MSGF_WAIT_CONN; - } - - /* in most states, we should abort in case of early close */ - channel_auto_close(req); - - if (req->to_forward) { - /* We can't process the buffer's contents yet */ - req->flags |= CF_WAKE_WRITE; - goto missing_data_or_waiting; - } - - if (msg->msg_state < HTTP_MSG_DONE) { - ret = ((msg->flags & HTTP_MSGF_TE_CHNK) - ? http_msg_forward_chunked_body(s, msg) - : http_msg_forward_body(s, msg)); - if (!ret) - goto missing_data_or_waiting; - if (ret < 0) - goto return_bad_req; - } - - /* other states, DONE...TUNNEL */ - /* we don't want to forward closes on DONE except in tunnel mode. */ - if ((txn->flags & TX_CON_WANT_MSK) != TX_CON_WANT_TUN) - channel_dont_close(req); - - http_resync_states(s); - if (!(req->analysers & an_bit)) { - if (unlikely(msg->msg_state == HTTP_MSG_ERROR)) { - if (req->flags & CF_SHUTW) { - /* request errors are most likely due to the - * server aborting the transfer. */ - goto return_srv_abort; - } - if (msg->err_pos >= 0) - http_capture_bad_message(sess->fe, s, msg, msg->err_state, s->be); - goto return_bad_req; - } - return 1; - } - - /* If "option abortonclose" is set on the backend, we want to monitor - * the client's connection and forward any shutdown notification to the - * server, which will decide whether to close or to go on processing the - * request. We only do that in tunnel mode, and not in other modes since - * it can be abused to exhaust source ports. */ - if (s->be->options & PR_O_ABRT_CLOSE) { - channel_auto_read(req); - if ((req->flags & (CF_SHUTR|CF_READ_NULL)) && - ((txn->flags & TX_CON_WANT_MSK) != TX_CON_WANT_TUN)) - s->si[1].flags |= SI_FL_NOLINGER; - channel_auto_close(req); - } - else if (s->txn->meth == HTTP_METH_POST) { - /* POST requests may require to read extra CRLF sent by broken - * browsers and which could cause an RST to be sent upon close - * on some systems (eg: Linux). */ - channel_auto_read(req); - } - return 0; - - missing_data_or_waiting: - /* stop waiting for data if the input is closed before the end */ - if (msg->msg_state < HTTP_MSG_ENDING && req->flags & CF_SHUTR) - goto return_cli_abort; - - waiting: - /* waiting for the last bits to leave the buffer */ - if (req->flags & CF_SHUTW) - goto return_srv_abort; - - /* When TE: chunked is used, we need to get there again to parse remaining - * chunks even if the client has closed, so we don't want to set CF_DONTCLOSE. - * And when content-length is used, we never want to let the possible - * shutdown be forwarded to the other side, as the state machine will - * take care of it once the client responds. It's also important to - * prevent TIME_WAITs from accumulating on the backend side, and for - * HTTP/2 where the last frame comes with a shutdown. - */ - if (msg->flags & (HTTP_MSGF_TE_CHNK|HTTP_MSGF_CNT_LEN)) - channel_dont_close(req); - - /* We know that more data are expected, but we couldn't send more that - * what we did. So we always set the CF_EXPECT_MORE flag so that the - * system knows it must not set a PUSH on this first part. Interactive - * modes are already handled by the stream sock layer. We must not do - * this in content-length mode because it could present the MSG_MORE - * flag with the last block of forwarded data, which would cause an - * additional delay to be observed by the receiver. - */ - if (msg->flags & HTTP_MSGF_TE_CHNK) - req->flags |= CF_EXPECT_MORE; - - return 0; - - return_cli_abort: - _HA_ATOMIC_ADD(&sess->fe->fe_counters.cli_aborts, 1); - _HA_ATOMIC_ADD(&s->be->be_counters.cli_aborts, 1); - if (objt_server(s->target)) - _HA_ATOMIC_ADD(&objt_server(s->target)->counters.cli_aborts, 1); - if (!(s->flags & SF_ERR_MASK)) - s->flags |= SF_ERR_CLICL; - status = 400; - goto return_error; - - return_srv_abort: - _HA_ATOMIC_ADD(&sess->fe->fe_counters.srv_aborts, 1); - _HA_ATOMIC_ADD(&s->be->be_counters.srv_aborts, 1); - if (objt_server(s->target)) - _HA_ATOMIC_ADD(&objt_server(s->target)->counters.srv_aborts, 1); - if (!(s->flags & SF_ERR_MASK)) - s->flags |= SF_ERR_SRVCL; - status = 502; - goto return_error; - - return_bad_req: /* let's centralize all bad requests */ - _HA_ATOMIC_ADD(&sess->fe->fe_counters.failed_req, 1); - if (sess->listener->counters) - _HA_ATOMIC_ADD(&sess->listener->counters->failed_req, 1); - if (!(s->flags & SF_ERR_MASK)) - s->flags |= SF_ERR_CLICL; - status = 400; - - return_error: - txn->req.err_state = txn->req.msg_state; - txn->req.msg_state = HTTP_MSG_ERROR; - if (txn->status > 0) { - /* Note: we don't send any error if some data were already sent */ - http_reply_and_close(s, txn->status, NULL); - } else { - txn->status = status; - http_reply_and_close(s, txn->status, http_error_message(s)); - } - req->analysers &= AN_REQ_FLT_END; - s->res.analysers &= AN_RES_FLT_END; /* we're in data phase, we want to abort both directions */ - if (!(s->flags & SF_FINST_MASK)) - s->flags |= ((txn->rsp.msg_state < HTTP_MSG_ERROR) ? SF_FINST_H : SF_FINST_D); - return 0; -} - -/* This stream analyser waits for a complete HTTP response. It returns 1 if the - * processing can continue on next analysers, or zero if it either needs more - * data or wants to immediately abort the response (eg: timeout, error, ...). It - * is tied to AN_RES_WAIT_HTTP and may may remove itself from s->res.analysers - * when it has nothing left to do, and may remove any analyser when it wants to - * abort. - */ -int http_wait_for_response(struct stream *s, struct channel *rep, int an_bit) -{ - struct session *sess = s->sess; - struct http_txn *txn = s->txn; - struct http_msg *msg = &txn->rsp; - struct hdr_ctx ctx; - struct connection *srv_conn; - int use_close_only; - int cur_idx; - int n; - - srv_conn = cs_conn(objt_cs(s->si[1].end)); - - if (IS_HTX_STRM(s)) - return htx_wait_for_response(s, rep, an_bit); - - DPRINTF(stderr,"[%u] %s: stream=%p b=%p, exp(r,w)=%u,%u bf=%08x bh=%lu analysers=%02x\n", - now_ms, __FUNCTION__, - s, - rep, - rep->rex, rep->wex, - rep->flags, - ci_data(rep), - rep->analysers); - - /* - * Now parse the partial (or complete) lines. - * We will check the response syntax, and also join multi-line - * headers. An index of all the lines will be elaborated while - * parsing. - * - * For the parsing, we use a 28 states FSM. - * - * Here is the information we currently have : - * ci_head(rep) = beginning of response - * ci_head(rep) + msg->eoh = end of processed headers / start of current one - * ci_tail(rep) = end of input data - * msg->eol = end of current header or line (LF or CRLF) - * msg->next = first non-visited byte - */ - - next_one: - /* There's a protected area at the end of the buffer for rewriting - * purposes. We don't want to start to parse the request if the - * protected area is affected, because we may have to move processed - * data later, which is much more complicated. - */ - if (c_data(rep) && msg->msg_state < HTTP_MSG_ERROR) { - if (unlikely(!channel_is_rewritable(rep))) { - /* some data has still not left the buffer, wake us once that's done */ - if (rep->flags & (CF_SHUTW|CF_SHUTW_NOW|CF_WRITE_ERROR|CF_WRITE_TIMEOUT)) - goto abort_response; - channel_dont_close(rep); - rep->flags |= CF_READ_DONTWAIT; /* try to get back here ASAP */ - rep->flags |= CF_WAKE_WRITE; - return 0; - } - - if (unlikely(ci_tail(rep) < c_ptr(rep, msg->next) || - ci_tail(rep) > b_wrap(&rep->buf) - global.tune.maxrewrite)) - channel_slow_realign(rep, trash.area); - - if (likely(msg->next < ci_data(rep))) - http_msg_analyzer(msg, &txn->hdr_idx); - } - - /* 1: we might have to print this header in debug mode */ - if (unlikely((global.mode & MODE_DEBUG) && - (!(global.mode & MODE_QUIET) || (global.mode & MODE_VERBOSE)) && - msg->msg_state >= HTTP_MSG_BODY)) { - char *eol, *sol; - - sol = ci_head(rep); - eol = sol + (msg->sl.st.l ? msg->sl.st.l : ci_data(rep)); - debug_hdr("srvrep", s, sol, eol); - - sol += hdr_idx_first_pos(&txn->hdr_idx); - cur_idx = hdr_idx_first_idx(&txn->hdr_idx); - - while (cur_idx) { - eol = sol + txn->hdr_idx.v[cur_idx].len; - debug_hdr("srvhdr", s, sol, eol); - sol = eol + txn->hdr_idx.v[cur_idx].cr + 1; - cur_idx = txn->hdr_idx.v[cur_idx].next; - } - } - - /* - * Now we quickly check if we have found a full valid response. - * If not so, we check the FD and buffer states before leaving. - * A full response is indicated by the fact that we have seen - * the double LF/CRLF, so the state is >= HTTP_MSG_BODY. Invalid - * responses are checked first. - * - * Depending on whether the client is still there or not, we - * may send an error response back or not. Note that normally - * we should only check for HTTP status there, and check I/O - * errors somewhere else. - */ - - if (unlikely(msg->msg_state < HTTP_MSG_BODY)) { - /* Invalid response */ - if (unlikely(msg->msg_state == HTTP_MSG_ERROR)) { - /* we detected a parsing error. We want to archive this response - * in the dedicated proxy area for later troubleshooting. - */ - hdr_response_bad: - if (msg->msg_state == HTTP_MSG_ERROR || msg->err_pos >= 0) - http_capture_bad_message(s->be, s, msg, msg->err_state, sess->fe); - - _HA_ATOMIC_ADD(&s->be->be_counters.failed_resp, 1); - if (objt_server(s->target)) { - _HA_ATOMIC_ADD(&__objt_server(s->target)->counters.failed_resp, 1); - health_adjust(__objt_server(s->target), HANA_STATUS_HTTP_HDRRSP); - } - abort_response: - channel_auto_close(rep); - rep->analysers &= AN_RES_FLT_END; - txn->status = 502; - s->si[1].flags |= SI_FL_NOLINGER; - channel_truncate(rep); - http_reply_and_close(s, txn->status, http_error_message(s)); - - if (!(s->flags & SF_ERR_MASK)) - s->flags |= SF_ERR_PRXCOND; - if (!(s->flags & SF_FINST_MASK)) - s->flags |= SF_FINST_H; - - return 0; - } - - /* too large response does not fit in buffer. */ - else if (channel_full(rep, global.tune.maxrewrite)) { - if (msg->err_pos < 0) - msg->err_pos = ci_data(rep); - goto hdr_response_bad; - } - - /* read error */ - else if (rep->flags & CF_READ_ERROR) { - if (msg->err_pos >= 0) - http_capture_bad_message(s->be, s, msg, msg->err_state, sess->fe); - else if (txn->flags & TX_NOT_FIRST) - goto abort_keep_alive; - - _HA_ATOMIC_ADD(&s->be->be_counters.failed_resp, 1); - if (objt_server(s->target)) { - _HA_ATOMIC_ADD(&__objt_server(s->target)->counters.failed_resp, 1); - health_adjust(__objt_server(s->target), HANA_STATUS_HTTP_READ_ERROR); - } - - channel_auto_close(rep); - rep->analysers &= AN_RES_FLT_END; - txn->status = 502; - - /* Check to see if the server refused the early data. - * If so, just send a 425 - */ - if (objt_cs(s->si[1].end)) { - struct connection *conn = objt_cs(s->si[1].end)->conn; - - if (conn->err_code == CO_ER_SSL_EARLY_FAILED) - txn->status = 425; - } - - s->si[1].flags |= SI_FL_NOLINGER; - channel_truncate(rep); - http_reply_and_close(s, txn->status, http_error_message(s)); - - if (!(s->flags & SF_ERR_MASK)) - s->flags |= SF_ERR_SRVCL; - if (!(s->flags & SF_FINST_MASK)) - s->flags |= SF_FINST_H; - return 0; - } - - /* read timeout : return a 504 to the client. */ - else if (rep->flags & CF_READ_TIMEOUT) { - if (msg->err_pos >= 0) - http_capture_bad_message(s->be, s, msg, msg->err_state, sess->fe); - - _HA_ATOMIC_ADD(&s->be->be_counters.failed_resp, 1); - if (objt_server(s->target)) { - _HA_ATOMIC_ADD(&__objt_server(s->target)->counters.failed_resp, 1); - health_adjust(__objt_server(s->target), HANA_STATUS_HTTP_READ_TIMEOUT); - } - - channel_auto_close(rep); - rep->analysers &= AN_RES_FLT_END; - txn->status = 504; - s->si[1].flags |= SI_FL_NOLINGER; - channel_truncate(rep); - http_reply_and_close(s, txn->status, http_error_message(s)); - - if (!(s->flags & SF_ERR_MASK)) - s->flags |= SF_ERR_SRVTO; - if (!(s->flags & SF_FINST_MASK)) - s->flags |= SF_FINST_H; - return 0; - } - - /* client abort with an abortonclose */ - else if ((rep->flags & CF_SHUTR) && ((s->req.flags & (CF_SHUTR|CF_SHUTW)) == (CF_SHUTR|CF_SHUTW))) { - _HA_ATOMIC_ADD(&sess->fe->fe_counters.cli_aborts, 1); - _HA_ATOMIC_ADD(&s->be->be_counters.cli_aborts, 1); - if (objt_server(s->target)) - _HA_ATOMIC_ADD(&objt_server(s->target)->counters.cli_aborts, 1); - - rep->analysers &= AN_RES_FLT_END; - channel_auto_close(rep); - - txn->status = 400; - channel_truncate(rep); - http_reply_and_close(s, txn->status, http_error_message(s)); - - if (!(s->flags & SF_ERR_MASK)) - s->flags |= SF_ERR_CLICL; - if (!(s->flags & SF_FINST_MASK)) - s->flags |= SF_FINST_H; - - /* process_stream() will take care of the error */ - return 0; - } - - /* close from server, capture the response if the server has started to respond */ - else if (rep->flags & CF_SHUTR) { - if (msg->msg_state >= HTTP_MSG_RPVER || msg->err_pos >= 0) - http_capture_bad_message(s->be, s, msg, msg->err_state, sess->fe); - else if (txn->flags & TX_NOT_FIRST) - goto abort_keep_alive; - - _HA_ATOMIC_ADD(&s->be->be_counters.failed_resp, 1); - if (objt_server(s->target)) { - _HA_ATOMIC_ADD(&__objt_server(s->target)->counters.failed_resp, 1); - health_adjust(__objt_server(s->target), HANA_STATUS_HTTP_BROKEN_PIPE); - } - - channel_auto_close(rep); - rep->analysers &= AN_RES_FLT_END; - txn->status = 502; - s->si[1].flags |= SI_FL_NOLINGER; - channel_truncate(rep); - http_reply_and_close(s, txn->status, http_error_message(s)); - - if (!(s->flags & SF_ERR_MASK)) - s->flags |= SF_ERR_SRVCL; - if (!(s->flags & SF_FINST_MASK)) - s->flags |= SF_FINST_H; - return 0; - } - - /* write error to client (we don't send any message then) */ - else if (rep->flags & CF_WRITE_ERROR) { - if (msg->err_pos >= 0) - http_capture_bad_message(s->be, s, msg, msg->err_state, sess->fe); - else if (txn->flags & TX_NOT_FIRST) - goto abort_keep_alive; - - _HA_ATOMIC_ADD(&s->be->be_counters.failed_resp, 1); - rep->analysers &= AN_RES_FLT_END; - channel_auto_close(rep); - - if (!(s->flags & SF_ERR_MASK)) - s->flags |= SF_ERR_CLICL; - if (!(s->flags & SF_FINST_MASK)) - s->flags |= SF_FINST_H; - - /* process_stream() will take care of the error */ - return 0; - } - - channel_dont_close(rep); - rep->flags |= CF_READ_DONTWAIT; /* try to get back here ASAP */ - return 0; - } - - /* More interesting part now : we know that we have a complete - * response which at least looks like HTTP. We have an indicator - * of each header's length, so we can parse them quickly. - */ - - if (unlikely(msg->err_pos >= 0)) - http_capture_bad_message(s->be, s, msg, msg->err_state, sess->fe); - - /* - * 1: get the status code - */ - n = ci_head(rep)[msg->sl.st.c] - '0'; - if (n < 1 || n > 5) - n = 0; - /* when the client triggers a 4xx from the server, it's most often due - * to a missing object or permission. These events should be tracked - * because if they happen often, it may indicate a brute force or a - * vulnerability scan. - */ - if (n == 4) - stream_inc_http_err_ctr(s); - - if (objt_server(s->target)) - _HA_ATOMIC_ADD(&objt_server(s->target)->counters.p.http.rsp[n], 1); - - /* RFC7230#2.6 has enforced the format of the HTTP version string to be - * exactly one digit "." one digit. This check may be disabled using - * option accept-invalid-http-response. - */ - if (!(s->be->options2 & PR_O2_RSPBUG_OK)) { - if (msg->sl.st.v_l != 8) { - msg->err_pos = 0; - goto hdr_response_bad; - } - - if (ci_head(rep)[4] != '/' || - !isdigit((unsigned char)ci_head(rep)[5]) || - ci_head(rep)[6] != '.' || - !isdigit((unsigned char)ci_head(rep)[7])) { - msg->err_pos = 4; - goto hdr_response_bad; - } - } - - /* check if the response is HTTP/1.1 or above */ - if ((msg->sl.st.v_l == 8) && - ((ci_head(rep)[5] > '1') || - ((ci_head(rep)[5] == '1') && (ci_head(rep)[7] >= '1')))) - msg->flags |= HTTP_MSGF_VER_11; - - /* "connection" has not been parsed yet */ - txn->flags &= ~(TX_HDR_CONN_PRS|TX_HDR_CONN_CLO|TX_HDR_CONN_KAL|TX_HDR_CONN_UPG|TX_CON_CLO_SET|TX_CON_KAL_SET); - - /* transfer length unknown*/ - msg->flags &= ~HTTP_MSGF_XFER_LEN; - - txn->status = strl2ui(ci_head(rep) + msg->sl.st.c, msg->sl.st.c_l); - - /* Adjust server's health based on status code. Note: status codes 501 - * and 505 are triggered on demand by client request, so we must not - * count them as server failures. - */ - if (objt_server(s->target)) { - if (txn->status >= 100 && (txn->status < 500 || txn->status == 501 || txn->status == 505)) - health_adjust(__objt_server(s->target), HANA_STATUS_HTTP_OK); - else - health_adjust(__objt_server(s->target), HANA_STATUS_HTTP_STS); - } - - /* - * We may be facing a 100-continue response, or any other informational - * 1xx response which is non-final, in which case this is not the right - * response, and we're waiting for the next one. Let's allow this response - * to go to the client and wait for the next one. There's an exception for - * 101 which is used later in the code to switch protocols. - */ - if (txn->status < 200 && - (txn->status == 100 || txn->status >= 102)) { - hdr_idx_init(&txn->hdr_idx); - msg->next -= channel_forward(rep, msg->next); - msg->msg_state = HTTP_MSG_RPBEFORE; - txn->status = 0; - s->logs.t_data = -1; /* was not a response yet */ - FLT_STRM_CB(s, flt_http_reset(s, msg)); - goto next_one; - } - - /* - * 2: check for cacheability. - */ - - switch (txn->status) { - case 200: - case 203: - case 204: - case 206: - case 300: - case 301: - case 404: - case 405: - case 410: - case 414: - case 501: - break; - default: - /* RFC7231#6.1: - * Responses with status codes that are defined as - * cacheable by default (e.g., 200, 203, 204, 206, - * 300, 301, 404, 405, 410, 414, and 501 in this - * specification) can be reused by a cache with - * heuristic expiration unless otherwise indicated - * by the method definition or explicit cache - * controls [RFC7234]; all other status codes are - * not cacheable by default. - */ - txn->flags &= ~(TX_CACHEABLE | TX_CACHE_COOK); - break; - } - - /* - * 3: we may need to capture headers - */ - s->logs.logwait &= ~LW_RESP; - if (unlikely((s->logs.logwait & LW_RSPHDR) && s->res_cap)) - http_capture_headers(ci_head(rep), &txn->hdr_idx, - s->res_cap, sess->fe->rsp_cap); - - /* 4: determine the transfer-length according to RFC2616 #4.4, updated - * by RFC7230#3.3.3 : - * - * The length of a message body is determined by one of the following - * (in order of precedence): - * - * 1. Any 2xx (Successful) response to a CONNECT request implies that - * the connection will become a tunnel immediately after the empty - * line that concludes the header fields. A client MUST ignore - * any Content-Length or Transfer-Encoding header fields received - * in such a message. Any 101 response (Switching Protocols) is - * managed in the same manner. - * - * 2. Any response to a HEAD request and any response with a 1xx - * (Informational), 204 (No Content), or 304 (Not Modified) status - * code is always terminated by the first empty line after the - * header fields, regardless of the header fields present in the - * message, and thus cannot contain a message body. - * - * 3. If a Transfer-Encoding header field is present and the chunked - * transfer coding (Section 4.1) is the final encoding, the message - * body length is determined by reading and decoding the chunked - * data until the transfer coding indicates the data is complete. - * - * If a Transfer-Encoding header field is present in a response and - * the chunked transfer coding is not the final encoding, the - * message body length is determined by reading the connection until - * it is closed by the server. If a Transfer-Encoding header field - * is present in a request and the chunked transfer coding is not - * the final encoding, the message body length cannot be determined - * reliably; the server MUST respond with the 400 (Bad Request) - * status code and then close the connection. - * - * If a message is received with both a Transfer-Encoding and a - * Content-Length header field, the Transfer-Encoding overrides the - * Content-Length. Such a message might indicate an attempt to - * perform request smuggling (Section 9.5) or response splitting - * (Section 9.4) and ought to be handled as an error. A sender MUST - * remove the received Content-Length field prior to forwarding such - * a message downstream. - * - * 4. If a message is received without Transfer-Encoding and with - * either multiple Content-Length header fields having differing - * field-values or a single Content-Length header field having an - * invalid value, then the message framing is invalid and the - * recipient MUST treat it as an unrecoverable error. If this is a - * request message, the server MUST respond with a 400 (Bad Request) - * status code and then close the connection. If this is a response - * message received by a proxy, the proxy MUST close the connection - * to the server, discard the received response, and send a 502 (Bad - * Gateway) response to the client. If this is a response message - * received by a user agent, the user agent MUST close the - * connection to the server and discard the received response. - * - * 5. If a valid Content-Length header field is present without - * Transfer-Encoding, its decimal value defines the expected message - * body length in octets. If the sender closes the connection or - * the recipient times out before the indicated number of octets are - * received, the recipient MUST consider the message to be - * incomplete and close the connection. - * - * 6. If this is a request message and none of the above are true, then - * the message body length is zero (no message body is present). - * - * 7. Otherwise, this is a response message without a declared message - * body length, so the message body length is determined by the - * number of octets received prior to the server closing the - * connection. - */ - - /* Skip parsing if no content length is possible. The response flags - * remain 0 as well as the chunk_len, which may or may not mirror - * the real header value, and we note that we know the response's length. - * FIXME: should we parse anyway and return an error on chunked encoding ? - */ - if (unlikely((txn->meth == HTTP_METH_CONNECT && txn->status == 200) || - txn->status == 101)) { - /* Either we've established an explicit tunnel, or we're - * switching the protocol. In both cases, we're very unlikely - * to understand the next protocols. We have to switch to tunnel - * mode, so that we transfer the request and responses then let - * this protocol pass unmodified. When we later implement specific - * parsers for such protocols, we'll want to check the Upgrade - * header which contains information about that protocol for - * responses with status 101 (eg: see RFC2817 about TLS). - */ - txn->flags = (txn->flags & ~TX_CON_WANT_MSK) | TX_CON_WANT_TUN; - msg->flags |= HTTP_MSGF_XFER_LEN; - goto end; - } - - if (txn->meth == HTTP_METH_HEAD || - (txn->status >= 100 && txn->status < 200) || - txn->status == 204 || txn->status == 304) { - msg->flags |= HTTP_MSGF_XFER_LEN; - goto skip_content_length; - } - - use_close_only = 0; - ctx.idx = 0; - while (http_find_header2("Transfer-Encoding", 17, ci_head(rep), &txn->hdr_idx, &ctx)) { - if (ctx.vlen == 7 && strncasecmp(ctx.line + ctx.val, "chunked", 7) == 0) - msg->flags |= (HTTP_MSGF_TE_CHNK | HTTP_MSGF_XFER_LEN); - else if (msg->flags & HTTP_MSGF_TE_CHNK) { - /* bad transfer-encoding (chunked followed by something else) */ - use_close_only = 1; - msg->flags &= ~(HTTP_MSGF_TE_CHNK | HTTP_MSGF_XFER_LEN); - break; - } - } - - /* Chunked responses must have their content-length removed */ - ctx.idx = 0; - if (use_close_only || (msg->flags & HTTP_MSGF_TE_CHNK)) { - while (http_find_header2("Content-Length", 14, ci_head(rep), &txn->hdr_idx, &ctx)) - http_remove_header2(msg, &txn->hdr_idx, &ctx); - } - else while (http_find_header2("Content-Length", 14, ci_head(rep), &txn->hdr_idx, &ctx)) { - signed long long cl; - - if (!ctx.vlen) { - msg->err_pos = ctx.line + ctx.val - ci_head(rep); - goto hdr_response_bad; - } - - if (strl2llrc(ctx.line + ctx.val, ctx.vlen, &cl)) { - msg->err_pos = ctx.line + ctx.val - ci_head(rep); - goto hdr_response_bad; /* parse failure */ - } - - if (cl < 0) { - msg->err_pos = ctx.line + ctx.val - ci_head(rep); - goto hdr_response_bad; - } - - if ((msg->flags & HTTP_MSGF_CNT_LEN) && (msg->chunk_len != cl)) { - msg->err_pos = ctx.line + ctx.val - ci_head(rep); - goto hdr_response_bad; /* already specified, was different */ - } - - msg->flags |= HTTP_MSGF_CNT_LEN | HTTP_MSGF_XFER_LEN; - msg->body_len = msg->chunk_len = cl; - } - - /* check for NTML authentication headers in 401 (WWW-Authenticate) and - * 407 (Proxy-Authenticate) responses and set the connection to private - */ - if (srv_conn && txn->status == 401) { - /* check for Negotiate/NTLM WWW-Authenticate headers */ - ctx.idx = 0; - while (http_find_header2("WWW-Authenticate", 16, ci_head(rep), &txn->hdr_idx, &ctx)) { - if ((ctx.vlen >= 9 && word_match(ctx.line + ctx.val, ctx.vlen, "Negotiate", 9)) || - (ctx.vlen >= 4 && word_match(ctx.line + ctx.val, ctx.vlen, "NTLM", 4))) - srv_conn->flags |= CO_FL_PRIVATE; - } - } else if (srv_conn && txn->status == 407) { - /* check for Negotiate/NTLM Proxy-Authenticate headers */ - ctx.idx = 0; - while (http_find_header2("Proxy-Authenticate", 18, ci_head(rep), &txn->hdr_idx, &ctx)) { - if ((ctx.vlen >= 9 && word_match(ctx.line + ctx.val, ctx.vlen, "Negotiate", 9)) || - (ctx.vlen >= 4 && word_match(ctx.line + ctx.val, ctx.vlen, "NTLM", 4))) - srv_conn->flags |= CO_FL_PRIVATE; - } - } - - skip_content_length: - /* Now we have to check if we need to modify the Connection header. - * This is more difficult on the response than it is on the request, - * because we can have two different HTTP versions and we don't know - * how the client will interprete a response. For instance, let's say - * that the client sends a keep-alive request in HTTP/1.0 and gets an - * HTTP/1.1 response without any header. Maybe it will bound itself to - * HTTP/1.0 because it only knows about it, and will consider the lack - * of header as a close, or maybe it knows HTTP/1.1 and can consider - * the lack of header as a keep-alive. Thus we will use two flags - * indicating how a request MAY be understood by the client. In case - * of multiple possibilities, we'll fix the header to be explicit. If - * ambiguous cases such as both close and keepalive are seen, then we - * will fall back to explicit close. Note that we won't take risks with - * HTTP/1.0 clients which may not necessarily understand keep-alive. - * See doc/internals/connection-header.txt for the complete matrix. - */ - if ((txn->status >= 200) && !(txn->flags & TX_HDR_CONN_PRS) && - (txn->flags & TX_CON_WANT_MSK) != TX_CON_WANT_TUN) { - int to_del = 0; - - /* on unknown transfer length, we must close */ - if (!(msg->flags & HTTP_MSGF_XFER_LEN)) - txn->flags = (txn->flags & ~TX_CON_WANT_MSK) | TX_CON_WANT_CLO; - - /* now adjust header transformations depending on current state */ - if ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_CLO) { - to_del |= 2; /* remove "keep-alive" on any response */ - if (!(msg->flags & HTTP_MSGF_VER_11)) - to_del |= 1; /* remove "close" for HTTP/1.0 responses */ - } - else { /* SCL / KAL */ - to_del |= 1; /* remove "close" on any response */ - if (txn->req.flags & msg->flags & HTTP_MSGF_VER_11) - to_del |= 2; /* remove "keep-alive" on pure 1.1 responses */ - } - - /* Parse and remove some headers from the connection header */ - http_parse_connection_header(txn, msg, to_del); - - /* Some keep-alive responses are converted to Server-close if - * the server wants to close. - */ - if ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_KAL) { - if ((txn->flags & TX_HDR_CONN_CLO) || - (!(txn->flags & TX_HDR_CONN_KAL) && !(msg->flags & HTTP_MSGF_VER_11))) - txn->flags = (txn->flags & ~TX_CON_WANT_MSK) | TX_CON_WANT_SCL; - } - } - - end: - /* we want to have the response time before we start processing it */ - s->logs.t_data = tv_ms_elapsed(&s->logs.tv_accept, &now); - - /* end of job, return OK */ - rep->analysers &= ~an_bit; - rep->analyse_exp = TICK_ETERNITY; - channel_auto_close(rep); - return 1; - - abort_keep_alive: - /* A keep-alive request to the server failed on a network error. - * The client is required to retry. We need to close without returning - * any other information so that the client retries. - */ - txn->status = 0; - rep->analysers &= AN_RES_FLT_END; - s->req.analysers &= AN_REQ_FLT_END; - channel_auto_close(rep); - s->logs.logwait = 0; - s->logs.level = 0; - s->res.flags &= ~CF_EXPECT_MORE; /* speed up sending a previous response */ - channel_truncate(rep); - http_reply_and_close(s, txn->status, NULL); - return 0; -} - -/* This function performs all the processing enabled for the current response. - * It normally returns 1 unless it wants to break. It relies on buffers flags, - * and updates s->res.analysers. It might make sense to explode it into several - * other functions. It works like process_request (see indications above). - */ -int http_process_res_common(struct stream *s, struct channel *rep, int an_bit, struct proxy *px) -{ - struct session *sess = s->sess; - struct http_txn *txn = s->txn; - struct http_msg *msg = &txn->rsp; - struct proxy *cur_proxy; - struct cond_wordlist *wl; - enum rule_result ret = HTTP_RULE_RES_CONT; - - if (IS_HTX_STRM(s)) - return htx_process_res_common(s, rep, an_bit, px); - - DPRINTF(stderr,"[%u] %s: stream=%p b=%p, exp(r,w)=%u,%u bf=%08x bh=%lu analysers=%02x\n", - now_ms, __FUNCTION__, - s, - rep, - rep->rex, rep->wex, - rep->flags, - ci_data(rep), - rep->analysers); - - if (unlikely(msg->msg_state < HTTP_MSG_BODY)) /* we need more data */ - return 0; - - /* The stats applet needs to adjust the Connection header but we don't - * apply any filter there. - */ - if (unlikely(objt_applet(s->target) == &http_stats_applet)) { - rep->analysers &= ~an_bit; - rep->analyse_exp = TICK_ETERNITY; - goto skip_filters; - } - - /* - * We will have to evaluate the filters. - * As opposed to version 1.2, now they will be evaluated in the - * filters order and not in the header order. This means that - * each filter has to be validated among all headers. - * - * Filters are tried with ->be first, then with ->fe if it is - * different from ->be. - * - * Maybe we are in resume condiion. In this case I choose the - * "struct proxy" which contains the rule list matching the resume - * pointer. If none of theses "struct proxy" match, I initialise - * the process with the first one. - * - * In fact, I check only correspondance betwwen the current list - * pointer and the ->fe rule list. If it doesn't match, I initialize - * the loop with the ->be. - */ - if (s->current_rule_list == &sess->fe->http_res_rules) - cur_proxy = sess->fe; - else - cur_proxy = s->be; - while (1) { - struct proxy *rule_set = cur_proxy; - - /* evaluate http-response rules */ - if (ret == HTTP_RULE_RES_CONT) { - ret = http_res_get_intercept_rule(cur_proxy, &cur_proxy->http_res_rules, s); - - if (ret == HTTP_RULE_RES_BADREQ) - goto return_srv_prx_502; - - if (ret == HTTP_RULE_RES_DONE) { - rep->analysers &= ~an_bit; - rep->analyse_exp = TICK_ETERNITY; - return 1; - } - } - - /* we need to be called again. */ - if (ret == HTTP_RULE_RES_YIELD) { - channel_dont_close(rep); - return 0; - } - - /* try headers filters */ - if (rule_set->rsp_exp != NULL) { - if (apply_filters_to_response(s, rep, rule_set) < 0) { - return_bad_resp: - if (objt_server(s->target)) { - _HA_ATOMIC_ADD(&__objt_server(s->target)->counters.failed_resp, 1); - health_adjust(__objt_server(s->target), HANA_STATUS_HTTP_RSP); - } - _HA_ATOMIC_ADD(&s->be->be_counters.failed_resp, 1); - return_srv_prx_502: - rep->analysers &= AN_RES_FLT_END; - txn->status = 502; - s->logs.t_data = -1; /* was not a valid response */ - s->si[1].flags |= SI_FL_NOLINGER; - channel_truncate(rep); - http_reply_and_close(s, txn->status, http_error_message(s)); - if (!(s->flags & SF_ERR_MASK)) - s->flags |= SF_ERR_PRXCOND; - if (!(s->flags & SF_FINST_MASK)) - s->flags |= SF_FINST_H; - return 0; - } - } - - /* has the response been denied ? */ - if (txn->flags & TX_SVDENY) { - if (objt_server(s->target)) - _HA_ATOMIC_ADD(&objt_server(s->target)->counters.failed_secu, 1); - - _HA_ATOMIC_ADD(&s->be->be_counters.denied_resp, 1); - _HA_ATOMIC_ADD(&sess->fe->fe_counters.denied_resp, 1); - if (sess->listener->counters) - _HA_ATOMIC_ADD(&sess->listener->counters->denied_resp, 1); - - goto return_srv_prx_502; - } - - /* add response headers from the rule sets in the same order */ - list_for_each_entry(wl, &rule_set->rsp_add, list) { - if (txn->status < 200 && txn->status != 101) - break; - if (wl->cond) { - int ret = acl_exec_cond(wl->cond, px, sess, s, SMP_OPT_DIR_RES|SMP_OPT_FINAL); - ret = acl_pass(ret); - if (((struct acl_cond *)wl->cond)->pol == ACL_COND_UNLESS) - ret = !ret; - if (!ret) - continue; - } - if (unlikely(http_header_add_tail2(&txn->rsp, &txn->hdr_idx, wl->s, strlen(wl->s)) < 0)) - goto return_bad_resp; - } - - /* check whether we're already working on the frontend */ - if (cur_proxy == sess->fe) - break; - cur_proxy = sess->fe; - } - - /* After this point, this anayzer can't return yield, so we can - * remove the bit corresponding to this analyzer from the list. - * - * Note that the intermediate returns and goto found previously - * reset the analyzers. - */ - rep->analysers &= ~an_bit; - rep->analyse_exp = TICK_ETERNITY; - - /* OK that's all we can do for 1xx responses */ - if (unlikely(txn->status < 200 && txn->status != 101)) - goto skip_header_mangling; - - /* - * Now check for a server cookie. - */ - if (s->be->cookie_name || sess->fe->capture_name || (s->be->options & PR_O_CHK_CACHE)) - manage_server_side_cookies(s, rep); - - /* - * Check for cache-control or pragma headers if required. - */ - if ((s->be->options & PR_O_CHK_CACHE) || (s->be->ck_opts & PR_CK_NOC)) - check_response_for_cacheability(s, rep); - - /* - * Add server cookie in the response if needed - */ - if (objt_server(s->target) && (s->be->ck_opts & PR_CK_INS) && - !((txn->flags & TX_SCK_FOUND) && (s->be->ck_opts & PR_CK_PSV)) && - (!(s->flags & SF_DIRECT) || - ((s->be->cookie_maxidle || txn->cookie_last_date) && - (!txn->cookie_last_date || (txn->cookie_last_date - date.tv_sec) < 0)) || - (s->be->cookie_maxlife && !txn->cookie_first_date) || // set the first_date - (!s->be->cookie_maxlife && txn->cookie_first_date)) && // remove the first_date - (!(s->be->ck_opts & PR_CK_POST) || (txn->meth == HTTP_METH_POST)) && - !(s->flags & SF_IGNORE_PRST)) { - /* the server is known, it's not the one the client requested, or the - * cookie's last seen date needs to be refreshed. We have to - * insert a set-cookie here, except if we want to insert only on POST - * requests and this one isn't. Note that servers which don't have cookies - * (eg: some backup servers) will return a full cookie removal request. - */ - if (!objt_server(s->target)->cookie) { - chunk_printf(&trash, - "Set-Cookie: %s=; Expires=Thu, 01-Jan-1970 00:00:01 GMT; path=/", - s->be->cookie_name); - } - else { - chunk_printf(&trash, "Set-Cookie: %s=%s", s->be->cookie_name, objt_server(s->target)->cookie); - - if (s->be->cookie_maxidle || s->be->cookie_maxlife) { - /* emit last_date, which is mandatory */ - trash.area[trash.data++] = COOKIE_DELIM_DATE; - s30tob64((date.tv_sec+3) >> 2, - trash.area + trash.data); - trash.data += 5; - - if (s->be->cookie_maxlife) { - /* emit first_date, which is either the original one or - * the current date. - */ - trash.area[trash.data++] = COOKIE_DELIM_DATE; - s30tob64(txn->cookie_first_date ? - txn->cookie_first_date >> 2 : - (date.tv_sec+3) >> 2, - trash.area + trash.data); - trash.data += 5; - } - } - chunk_appendf(&trash, "; path=/"); - } - - if (s->be->cookie_domain) - chunk_appendf(&trash, "; domain=%s", s->be->cookie_domain); - - if (s->be->ck_opts & PR_CK_HTTPONLY) - chunk_appendf(&trash, "; HttpOnly"); - - if (s->be->ck_opts & PR_CK_SECURE) - chunk_appendf(&trash, "; Secure"); - - if (unlikely(http_header_add_tail2(&txn->rsp, &txn->hdr_idx, trash.area, trash.data) < 0)) - goto return_bad_resp; - - txn->flags &= ~TX_SCK_MASK; - if (__objt_server(s->target)->cookie && (s->flags & SF_DIRECT)) - /* the server did not change, only the date was updated */ - txn->flags |= TX_SCK_UPDATED; - else - txn->flags |= TX_SCK_INSERTED; - - /* Here, we will tell an eventual cache on the client side that we don't - * want it to cache this reply because HTTP/1.0 caches also cache cookies ! - * Some caches understand the correct form: 'no-cache="set-cookie"', but - * others don't (eg: apache <= 1.3.26). So we use 'private' instead. - */ - if ((s->be->ck_opts & PR_CK_NOC) && (txn->flags & TX_CACHEABLE)) { - - txn->flags &= ~TX_CACHEABLE & ~TX_CACHE_COOK; - - if (unlikely(http_header_add_tail2(&txn->rsp, &txn->hdr_idx, - "Cache-control: private", 22) < 0)) - goto return_bad_resp; - } - } - - /* - * Check if result will be cacheable with a cookie. - * We'll block the response if security checks have caught - * nasty things such as a cacheable cookie. - */ - if (((txn->flags & (TX_CACHEABLE | TX_CACHE_COOK | TX_SCK_PRESENT)) == - (TX_CACHEABLE | TX_CACHE_COOK | TX_SCK_PRESENT)) && - (s->be->options & PR_O_CHK_CACHE)) { - /* we're in presence of a cacheable response containing - * a set-cookie header. We'll block it as requested by - * the 'checkcache' option, and send an alert. - */ - if (objt_server(s->target)) - _HA_ATOMIC_ADD(&objt_server(s->target)->counters.failed_secu, 1); - - _HA_ATOMIC_ADD(&s->be->be_counters.denied_resp, 1); - _HA_ATOMIC_ADD(&sess->fe->fe_counters.denied_resp, 1); - if (sess->listener->counters) - _HA_ATOMIC_ADD(&sess->listener->counters->denied_resp, 1); - - ha_alert("Blocking cacheable cookie in response from instance %s, server %s.\n", - s->be->id, objt_server(s->target) ? objt_server(s->target)->id : ""); - send_log(s->be, LOG_ALERT, - "Blocking cacheable cookie in response from instance %s, server %s.\n", - s->be->id, objt_server(s->target) ? objt_server(s->target)->id : ""); - goto return_srv_prx_502; - } - - skip_filters: - /* - * Adjust "Connection: close" or "Connection: keep-alive" if needed. - * If an "Upgrade" token is found, the header is left untouched in order - * not to have to deal with some client bugs : some of them fail an upgrade - * if anything but "Upgrade" is present in the Connection header. We don't - * want to touch any 101 response either since it's switching to another - * protocol. - */ - if ((txn->status != 101) && !(txn->flags & TX_HDR_CONN_UPG) && - (txn->flags & TX_CON_WANT_MSK) != TX_CON_WANT_TUN) { - unsigned int want_flags = 0; - - if ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_KAL || - (txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_SCL) { - /* we want a keep-alive response here. Keep-alive header - * required if either side is not 1.1. - */ - if (!(txn->req.flags & msg->flags & HTTP_MSGF_VER_11)) - want_flags |= TX_CON_KAL_SET; - } - else { /* CLO */ - /* we want a close response here. Close header required if - * the server is 1.1, regardless of the client. - */ - if (msg->flags & HTTP_MSGF_VER_11) - want_flags |= TX_CON_CLO_SET; - } - - if (want_flags != (txn->flags & (TX_CON_CLO_SET|TX_CON_KAL_SET))) - http_change_connection_header(txn, msg, want_flags); - } - - skip_header_mangling: - /* Always enter in the body analyzer */ - rep->analysers &= ~AN_RES_FLT_XFER_DATA; - rep->analysers |= AN_RES_HTTP_XFER_BODY; - - /* if the user wants to log as soon as possible, without counting - * bytes from the server, then this is the right moment. We have - * to temporarily assign bytes_out to log what we currently have. - */ - if (!LIST_ISEMPTY(&sess->fe->logformat) && !(s->logs.logwait & LW_BYTES)) { - s->logs.t_close = s->logs.t_data; /* to get a valid end date */ - s->logs.bytes_out = txn->rsp.eoh; - s->do_log(s); - s->logs.bytes_out = 0; - } - return 1; -} - -/* This function is an analyser which forwards response body (including chunk - * sizes if any). It is called as soon as we must forward, even if we forward - * zero byte. The only situation where it must not be called is when we're in - * tunnel mode and we want to forward till the close. It's used both to forward - * remaining data and to resync after end of body. It expects the msg_state to - * be between MSG_BODY and MSG_DONE (inclusive). It returns zero if it needs to - * read more data, or 1 once we can go on with next request or end the stream. - * - * It is capable of compressing response data both in content-length mode and - * in chunked mode. The state machines follows different flows depending on - * whether content-length and chunked modes are used, since there are no - * trailers in content-length : - * - * chk-mode cl-mode - * ,----- BODY -----. - * / \ - * V size > 0 V chk-mode - * .--> SIZE -------------> DATA -------------> CRLF - * | | size == 0 | last byte | - * | v final crlf v inspected | - * | TRAILERS -----------> DONE | - * | | - * `----------------------------------------------' - * - * Compression only happens in the DATA state, and must be flushed in final - * states (TRAILERS/DONE) or when leaving on missing data. Normal forwarding - * is performed at once on final states for all bytes parsed, or when leaving - * on missing data. - */ -int http_response_forward_body(struct stream *s, struct channel *res, int an_bit) -{ - struct session *sess = s->sess; - struct http_txn *txn = s->txn; - struct http_msg *msg = &s->txn->rsp; - int ret; - - if (IS_HTX_STRM(s)) - return htx_response_forward_body(s, res, an_bit); - - DPRINTF(stderr,"[%u] %s: stream=%p b=%p, exp(r,w)=%u,%u bf=%08x bh=%lu analysers=%02x\n", - now_ms, __FUNCTION__, - s, - res, - res->rex, res->wex, - res->flags, - ci_data(res), - res->analysers); - - if (unlikely(msg->msg_state < HTTP_MSG_BODY)) - return 0; - - if ((res->flags & (CF_READ_ERROR|CF_READ_TIMEOUT|CF_WRITE_ERROR|CF_WRITE_TIMEOUT)) || - ((res->flags & CF_SHUTW) && (res->to_forward || co_data(res))) || - !s->req.analysers) { - /* Output closed while we were sending data. We must abort and - * wake the other side up. - */ - msg->err_state = msg->msg_state; - msg->msg_state = HTTP_MSG_ERROR; - http_resync_states(s); - return 1; - } - - /* in most states, we should abort in case of early close */ - channel_auto_close(res); - - if (msg->msg_state == HTTP_MSG_BODY) { - msg->msg_state = ((msg->flags & HTTP_MSGF_TE_CHNK) - ? HTTP_MSG_CHUNK_SIZE - : HTTP_MSG_DATA); - } - - if (res->to_forward) { - /* We can't process the buffer's contents yet */ - res->flags |= CF_WAKE_WRITE; - goto missing_data_or_waiting; - } - - if (msg->msg_state < HTTP_MSG_DONE) { - ret = ((msg->flags & HTTP_MSGF_TE_CHNK) - ? http_msg_forward_chunked_body(s, msg) - : http_msg_forward_body(s, msg)); - if (!ret) - goto missing_data_or_waiting; - if (ret < 0) - goto return_bad_res; - } - - /* other states, DONE...TUNNEL */ - /* for keep-alive we don't want to forward closes on DONE */ - if ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_KAL || - (txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_SCL) - channel_dont_close(res); - - http_resync_states(s); - if (!(res->analysers & an_bit)) { - if (unlikely(msg->msg_state == HTTP_MSG_ERROR)) { - if (res->flags & CF_SHUTW) { - /* response errors are most likely due to the - * client aborting the transfer. */ - goto return_cli_abort; - } - if (msg->err_pos >= 0) - http_capture_bad_message(s->be, s, msg, msg->err_state, strm_fe(s)); - goto return_bad_res; - } - return 1; - } - return 0; - - missing_data_or_waiting: - if (res->flags & CF_SHUTW) - goto return_cli_abort; - - /* stop waiting for data if the input is closed before the end. If the - * client side was already closed, it means that the client has aborted, - * so we don't want to count this as a server abort. Otherwise it's a - * server abort. - */ - if (msg->msg_state < HTTP_MSG_ENDING && res->flags & CF_SHUTR) { - if ((s->req.flags & (CF_SHUTR|CF_SHUTW)) == (CF_SHUTR|CF_SHUTW)) - goto return_cli_abort; - /* If we have some pending data, we continue the processing */ - if (!ci_data(res)) - goto return_srv_abort; - } - - /* we need to obey the req analyser, so if it leaves, we must too */ - if (!s->req.analysers) - goto return_bad_res; - - /* When TE: chunked is used, we need to get there again to parse - * remaining chunks even if the server has closed, so we don't want to - * set CF_DONTCLOSE. Similarly, if keep-alive is set on the client side - * or if there are filters registered on the stream, we don't want to - * forward a close - */ - if ((msg->flags & HTTP_MSGF_TE_CHNK) || - HAS_DATA_FILTERS(s, res) || - (txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_KAL || - (txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_SCL) - channel_dont_close(res); - - /* We know that more data are expected, but we couldn't send more that - * what we did. So we always set the CF_EXPECT_MORE flag so that the - * system knows it must not set a PUSH on this first part. Interactive - * modes are already handled by the stream sock layer. We must not do - * this in content-length mode because it could present the MSG_MORE - * flag with the last block of forwarded data, which would cause an - * additional delay to be observed by the receiver. - */ - if ((msg->flags & HTTP_MSGF_TE_CHNK) || (msg->flags & HTTP_MSGF_COMPRESSING)) - res->flags |= CF_EXPECT_MORE; - - /* the stream handler will take care of timeouts and errors */ - return 0; - - return_srv_abort: - _HA_ATOMIC_ADD(&sess->fe->fe_counters.srv_aborts, 1); - _HA_ATOMIC_ADD(&s->be->be_counters.srv_aborts, 1); - if (objt_server(s->target)) - _HA_ATOMIC_ADD(&objt_server(s->target)->counters.srv_aborts, 1); - if (!(s->flags & SF_ERR_MASK)) - s->flags |= SF_ERR_SRVCL; - goto return_error; - - return_cli_abort: - _HA_ATOMIC_ADD(&sess->fe->fe_counters.cli_aborts, 1); - _HA_ATOMIC_ADD(&s->be->be_counters.cli_aborts, 1); - if (objt_server(s->target)) - _HA_ATOMIC_ADD(&objt_server(s->target)->counters.cli_aborts, 1); - if (!(s->flags & SF_ERR_MASK)) - s->flags |= SF_ERR_CLICL; - goto return_error; - - return_bad_res: - _HA_ATOMIC_ADD(&s->be->be_counters.failed_resp, 1); - if (objt_server(s->target)) { - _HA_ATOMIC_ADD(&objt_server(s->target)->counters.failed_resp, 1); - health_adjust(__objt_server(s->target), HANA_STATUS_HTTP_RSP); - } - if (!(s->flags & SF_ERR_MASK)) - s->flags |= SF_ERR_SRVCL; - - return_error: - txn->rsp.err_state = txn->rsp.msg_state; - txn->rsp.msg_state = HTTP_MSG_ERROR; - /* don't send any error message as we're in the body */ - http_reply_and_close(s, txn->status, NULL); - res->analysers &= AN_RES_FLT_END; - s->req.analysers &= AN_REQ_FLT_END; /* we're in data phase, we want to abort both directions */ - if (!(s->flags & SF_FINST_MASK)) - s->flags |= SF_FINST_D; - return 0; -} - - -int http_msg_forward_body(struct stream *s, struct http_msg *msg) -{ - struct channel *chn = msg->chn; - int ret; - - /* Here we have the guarantee to be in HTTP_MSG_DATA or HTTP_MSG_ENDING state */ - - if (msg->msg_state == HTTP_MSG_ENDING) - goto ending; - - /* Neither content-length, nor transfer-encoding was found, so we must - * read the body until the server connection is closed. In that case, we - * eat data as they come. Of course, this happens for response only. */ - if (!(msg->flags & HTTP_MSGF_XFER_LEN)) { - unsigned long long len = ci_data(chn) - msg->next; - msg->chunk_len += len; - msg->body_len += len; - } - ret = FLT_STRM_DATA_CB(s, chn, flt_http_data(s, msg), - /* default_ret */ MIN(msg->chunk_len, ci_data(chn) - msg->next), - /* on_error */ goto error); - msg->next += ret; - msg->chunk_len -= ret; - if (msg->chunk_len) { - /* input empty or output full */ - if (ci_data(chn) > msg->next) - chn->flags |= CF_WAKE_WRITE; - goto missing_data_or_waiting; - } - - /* This check can only be true for a response. HTTP_MSGF_XFER_LEN is - * always set for a request. */ - if (!(msg->flags & HTTP_MSGF_XFER_LEN)) { - /* The server still sending data that should be filtered */ - if (!(chn->flags & CF_SHUTR) && HAS_DATA_FILTERS(s, chn)) - goto missing_data_or_waiting; - msg->msg_state = HTTP_MSG_TUNNEL; - goto ending; - } - - msg->msg_state = HTTP_MSG_ENDING; - chn->flags |= CF_EOI; - - ending: - /* we may have some pending data starting at res->buf.p such as a last - * chunk of data or trailers. */ - ret = FLT_STRM_DATA_CB(s, chn, flt_http_forward_data(s, msg, msg->next), - /* default_ret */ msg->next, - /* on_error */ goto error); - c_adv(chn, ret); - msg->next -= ret; - if (unlikely(!(chn->flags & CF_WROTE_DATA) || msg->sov > 0)) - msg->sov -= ret; - if (msg->next) - goto waiting; - - FLT_STRM_DATA_CB(s, chn, flt_http_end(s, msg), - /* default_ret */ 1, - /* on_error */ goto error, - /* on_wait */ goto waiting); - if (msg->msg_state == HTTP_MSG_ENDING) - msg->msg_state = HTTP_MSG_DONE; - return 1; - - missing_data_or_waiting: - /* we may have some pending data starting at chn->buf.p */ - ret = FLT_STRM_DATA_CB(s, chn, flt_http_forward_data(s, msg, msg->next), - /* default_ret */ msg->next, - /* on_error */ goto error); - c_adv(chn, ret); - msg->next -= ret; - if (!(chn->flags & CF_WROTE_DATA) || msg->sov > 0) - msg->sov -= ret; - if (!HAS_DATA_FILTERS(s, chn)) - msg->chunk_len -= channel_forward(chn, msg->chunk_len); - waiting: - return 0; - error: - return -1; -} - -int http_msg_forward_chunked_body(struct stream *s, struct http_msg *msg) -{ - struct channel *chn = msg->chn; - unsigned int chunk; - int ret; - - /* Here we have the guarantee to be in one of the following state: - * HTTP_MSG_DATA, HTTP_MSG_CHUNK_SIZE, HTTP_MSG_CHUNK_CRLF, - * HTTP_MSG_TRAILERS or HTTP_MSG_ENDING. */ - - if (msg->msg_state == HTTP_MSG_ENDING) - goto ending; - - /* Don't parse chunks if there is no input data */ - if (!ci_data(chn)) - goto waiting; - - switch_states: - switch (msg->msg_state) { - case HTTP_MSG_DATA: - ret = FLT_STRM_DATA_CB(s, chn, flt_http_data(s, msg), - /* default_ret */ MIN(msg->chunk_len, ci_data(chn) - msg->next), - /* on_error */ goto error); - msg->next += ret; - msg->chunk_len -= ret; - if (msg->chunk_len) { - /* input empty or output full */ - if (ci_data(chn) > msg->next) - chn->flags |= CF_WAKE_WRITE; - goto missing_data_or_waiting; - } - - /* nothing left to forward for this chunk*/ - msg->msg_state = HTTP_MSG_CHUNK_CRLF; - /* fall through for HTTP_MSG_CHUNK_CRLF */ - - case HTTP_MSG_CHUNK_CRLF: - /* we want the CRLF after the data */ - ret = h1_skip_chunk_crlf(&chn->buf, co_data(chn) + msg->next, c_data(chn)); - if (ret == 0) - goto missing_data_or_waiting; - if (ret < 0) { - msg->err_pos = ci_data(chn) + ret; - if (msg->err_pos < 0) - msg->err_pos += chn->buf.size; - goto chunk_parsing_error; - } - msg->next += ret; - msg->msg_state = HTTP_MSG_CHUNK_SIZE; - /* fall through for HTTP_MSG_CHUNK_SIZE */ - - case HTTP_MSG_CHUNK_SIZE: - /* read the chunk size and assign it to ->chunk_len, - * then set ->next to point to the body and switch to - * DATA or TRAILERS state. - */ - ret = h1_parse_chunk_size(&chn->buf, co_data(chn) + msg->next, c_data(chn), &chunk); - if (ret == 0) - goto missing_data_or_waiting; - if (ret < 0) { - msg->err_pos = ci_data(chn) + ret; - if (msg->err_pos < 0) - msg->err_pos += chn->buf.size; - goto chunk_parsing_error; - } - - msg->sol = ret; - msg->next += ret; - msg->chunk_len = chunk; - msg->body_len += chunk; - - if (msg->chunk_len) { - msg->msg_state = HTTP_MSG_DATA; - goto switch_states; - } - msg->msg_state = HTTP_MSG_TRAILERS; - /* fall through for HTTP_MSG_TRAILERS */ - - case HTTP_MSG_TRAILERS: - ret = http_forward_trailers(msg); - if (ret < 0) - goto chunk_parsing_error; - FLT_STRM_DATA_CB(s, chn, flt_http_chunk_trailers(s, msg), - /* default_ret */ 1, - /* on_error */ goto error); - msg->next += msg->sol; - if (!ret) - goto missing_data_or_waiting; - break; - - default: - /* This should no happen in this function */ - goto error; - } - - msg->msg_state = HTTP_MSG_ENDING; - chn->flags |= CF_EOI; - - ending: - /* we may have some pending data starting at res->buf.p such as a last - * chunk of data or trailers. */ - ret = FLT_STRM_DATA_CB(s, chn, flt_http_forward_data(s, msg, msg->next), - /* default_ret */ msg->next, - /* on_error */ goto error); - c_adv(chn, ret); - msg->next -= ret; - if (unlikely(!(chn->flags & CF_WROTE_DATA) || msg->sov > 0)) - msg->sov -= ret; - if (msg->next) - goto waiting; - - FLT_STRM_DATA_CB(s, chn, flt_http_end(s, msg), - /* default_ret */ 1, - /* on_error */ goto error, - /* on_wait */ goto waiting); - msg->msg_state = HTTP_MSG_DONE; - return 1; - - missing_data_or_waiting: - /* we may have some pending data starting at chn->buf.p */ - ret = FLT_STRM_DATA_CB(s, chn, flt_http_forward_data(s, msg, msg->next), - /* default_ret */ msg->next, - /* on_error */ goto error); - c_adv(chn, ret); - msg->next -= ret; - if (!(chn->flags & CF_WROTE_DATA) || msg->sov > 0) - msg->sov -= ret; - if (!HAS_DATA_FILTERS(s, chn)) - msg->chunk_len -= channel_forward(chn, msg->chunk_len); - waiting: - return 0; - - chunk_parsing_error: - if (msg->err_pos >= 0) { - if (chn->flags & CF_ISRESP) - http_capture_bad_message(s->be, s, msg, - msg->msg_state, strm_fe(s)); - else - http_capture_bad_message(strm_fe(s), s, - msg, msg->msg_state, s->be); - } - error: - return -1; -} - - -/* Iterate the same filter through all request headers. - * Returns 1 if this filter can be stopped upon return, otherwise 0. - * Since it can manage the switch to another backend, it updates the per-proxy - * DENY stats. - */ -int apply_filter_to_req_headers(struct stream *s, struct channel *req, struct hdr_exp *exp) -{ - char *cur_ptr, *cur_end, *cur_next; - int cur_idx, old_idx, last_hdr; - struct http_txn *txn = s->txn; - struct hdr_idx_elem *cur_hdr; - int delta, len; - - last_hdr = 0; - - cur_next = ci_head(req) + hdr_idx_first_pos(&txn->hdr_idx); - old_idx = 0; - - while (!last_hdr) { - if (unlikely(txn->flags & (TX_CLDENY | TX_CLTARPIT))) - return 1; - else if (unlikely(txn->flags & TX_CLALLOW) && - (exp->action == ACT_ALLOW || - exp->action == ACT_DENY || - exp->action == ACT_TARPIT)) - return 0; - - cur_idx = txn->hdr_idx.v[old_idx].next; - if (!cur_idx) - break; - - cur_hdr = &txn->hdr_idx.v[cur_idx]; - cur_ptr = cur_next; - cur_end = cur_ptr + cur_hdr->len; - cur_next = cur_end + cur_hdr->cr + 1; - - /* Now we have one header between cur_ptr and cur_end, - * and the next header starts at cur_next. - */ - - if (regex_exec_match2(exp->preg, cur_ptr, cur_end-cur_ptr, MAX_MATCH, pmatch, 0)) { - switch (exp->action) { - case ACT_ALLOW: - txn->flags |= TX_CLALLOW; - last_hdr = 1; - break; - - case ACT_DENY: - txn->flags |= TX_CLDENY; - last_hdr = 1; - break; - - case ACT_TARPIT: - txn->flags |= TX_CLTARPIT; - last_hdr = 1; - break; - - case ACT_REPLACE: - len = exp_replace(trash.area, - trash.size, cur_ptr, - exp->replace, pmatch); - if (len < 0) - return -1; - - delta = b_rep_blk(&req->buf, cur_ptr, cur_end, trash.area, len); - - /* FIXME: if the user adds a newline in the replacement, the - * index will not be recalculated for now, and the new line - * will not be counted as a new header. - */ - - cur_end += delta; - cur_next += delta; - cur_hdr->len += delta; - http_msg_move_end(&txn->req, delta); - break; - - case ACT_REMOVE: - delta = b_rep_blk(&req->buf, cur_ptr, cur_next, NULL, 0); - cur_next += delta; - - http_msg_move_end(&txn->req, delta); - txn->hdr_idx.v[old_idx].next = cur_hdr->next; - txn->hdr_idx.used--; - cur_hdr->len = 0; - cur_end = NULL; /* null-term has been rewritten */ - cur_idx = old_idx; - break; - - } - } - - /* keep the link from this header to next one in case of later - * removal of next header. - */ - old_idx = cur_idx; - } - return 0; -} - - -/* Apply the filter to the request line. - * Returns 0 if nothing has been done, 1 if the filter has been applied, - * or -1 if a replacement resulted in an invalid request line. - * Since it can manage the switch to another backend, it updates the per-proxy - * DENY stats. - */ -int apply_filter_to_req_line(struct stream *s, struct channel *req, struct hdr_exp *exp) -{ - char *cur_ptr, *cur_end; - int done; - struct http_txn *txn = s->txn; - int delta, len; - - if (unlikely(txn->flags & (TX_CLDENY | TX_CLTARPIT))) - return 1; - else if (unlikely(txn->flags & TX_CLALLOW) && - (exp->action == ACT_ALLOW || - exp->action == ACT_DENY || - exp->action == ACT_TARPIT)) - return 0; - else if (exp->action == ACT_REMOVE) - return 0; - - done = 0; - - cur_ptr = ci_head(req); - cur_end = cur_ptr + txn->req.sl.rq.l; - - /* Now we have the request line between cur_ptr and cur_end */ - - if (regex_exec_match2(exp->preg, cur_ptr, cur_end-cur_ptr, MAX_MATCH, pmatch, 0)) { - switch (exp->action) { - case ACT_ALLOW: - txn->flags |= TX_CLALLOW; - done = 1; - break; - - case ACT_DENY: - txn->flags |= TX_CLDENY; - done = 1; - break; - - case ACT_TARPIT: - txn->flags |= TX_CLTARPIT; - done = 1; - break; - - case ACT_REPLACE: - len = exp_replace(trash.area, trash.size, - cur_ptr, exp->replace, pmatch); - if (len < 0) - return -1; - - delta = b_rep_blk(&req->buf, cur_ptr, cur_end, trash.area, len); - - /* FIXME: if the user adds a newline in the replacement, the - * index will not be recalculated for now, and the new line - * will not be counted as a new header. - */ - - http_msg_move_end(&txn->req, delta); - cur_end += delta; - cur_end = (char *)http_parse_reqline(&txn->req, - HTTP_MSG_RQMETH, - cur_ptr, cur_end + 1, - NULL, NULL); - if (unlikely(!cur_end)) - return -1; - - /* we have a full request and we know that we have either a CR - * or an LF at . - */ - txn->meth = find_http_meth(cur_ptr, txn->req.sl.rq.m_l); - hdr_idx_set_start(&txn->hdr_idx, txn->req.sl.rq.l, *cur_end == '\r'); - /* there is no point trying this regex on headers */ - return 1; - } - } - return done; -} - - - -/* - * Apply all the req filters of proxy to all headers in buffer of stream . - * Returns 0 if everything is alright, or -1 in case a replacement lead to an - * unparsable request. Since it can manage the switch to another backend, it - * updates the per-proxy DENY stats. - */ -int apply_filters_to_request(struct stream *s, struct channel *req, struct proxy *px) -{ - struct session *sess = s->sess; - struct http_txn *txn = s->txn; - struct hdr_exp *exp; - - for (exp = px->req_exp; exp; exp = exp->next) { - int ret; - - /* - * The interleaving of transformations and verdicts - * makes it difficult to decide to continue or stop - * the evaluation. - */ - - if (txn->flags & (TX_CLDENY|TX_CLTARPIT)) - break; - - if ((txn->flags & TX_CLALLOW) && - (exp->action == ACT_ALLOW || exp->action == ACT_DENY || - exp->action == ACT_TARPIT || exp->action == ACT_PASS)) - continue; - - /* if this filter had a condition, evaluate it now and skip to - * next filter if the condition does not match. - */ - if (exp->cond) { - ret = acl_exec_cond(exp->cond, px, sess, s, SMP_OPT_DIR_REQ|SMP_OPT_FINAL); - ret = acl_pass(ret); - if (((struct acl_cond *)exp->cond)->pol == ACL_COND_UNLESS) - ret = !ret; - - if (!ret) - continue; - } - - /* Apply the filter to the request line. */ - ret = apply_filter_to_req_line(s, req, exp); - if (unlikely(ret < 0)) - return -1; - - if (likely(ret == 0)) { - /* The filter did not match the request, it can be - * iterated through all headers. - */ - if (unlikely(apply_filter_to_req_headers(s, req, exp) < 0)) - return -1; - } - } - return 0; -} - - -/* Delete a value in a header between delimiters and in buffer - * . The number of characters displaced is returned, and the pointer to - * the first delimiter is updated if required. The function tries as much as - * possible to respect the following principles : - * - replace delimiter by the one unless points to a - * colon, in which case is simply removed - * - set exactly one space character after the new first delimiter, unless - * there are not enough characters in the block being moved to do so. - * - remove unneeded spaces before the previous delimiter and after the new - * one. - * - * It is the caller's responsibility to ensure that : - * - points to a valid delimiter or the colon ; - * - points to a valid delimiter or the final CR/LF ; - * - there are non-space chars before ; - * - there is a CR/LF at or after . - */ -static int del_hdr_value(struct buffer *buf, char **from, char *next) -{ - char *prev = *from; - - if (*prev == ':') { - /* We're removing the first value, preserve the colon and add a - * space if possible. - */ - if (!HTTP_IS_CRLF(*next)) - next++; - prev++; - if (prev < next) - *prev++ = ' '; - - while (HTTP_IS_SPHT(*next)) - next++; - } else { - /* Remove useless spaces before the old delimiter. */ - while (HTTP_IS_SPHT(*(prev-1))) - prev--; - *from = prev; - - /* copy the delimiter and if possible a space if we're - * not at the end of the line. - */ - if (!HTTP_IS_CRLF(*next)) { - *prev++ = *next++; - if (prev + 1 < next) - *prev++ = ' '; - while (HTTP_IS_SPHT(*next)) - next++; - } - } - return b_rep_blk(buf, prev, next, NULL, 0); -} - -/* - * Manage client-side cookie. It can impact performance by about 2% so it is - * desirable to call it only when needed. This code is quite complex because - * of the multiple very crappy and ambiguous syntaxes we have to support. it - * highly recommended not to touch this part without a good reason ! - */ -void manage_client_side_cookies(struct stream *s, struct channel *req) -{ - struct http_txn *txn = s->txn; - struct session *sess = s->sess; - int preserve_hdr; - int cur_idx, old_idx; - char *hdr_beg, *hdr_end, *hdr_next, *del_from; - char *prev, *att_beg, *att_end, *equal, *val_beg, *val_end, *next; - - /* Iterate through the headers, we start with the start line. */ - old_idx = 0; - hdr_next = ci_head(req) + hdr_idx_first_pos(&txn->hdr_idx); - - while ((cur_idx = txn->hdr_idx.v[old_idx].next)) { - struct hdr_idx_elem *cur_hdr; - int val; - - cur_hdr = &txn->hdr_idx.v[cur_idx]; - hdr_beg = hdr_next; - hdr_end = hdr_beg + cur_hdr->len; - hdr_next = hdr_end + cur_hdr->cr + 1; - - /* We have one full header between hdr_beg and hdr_end, and the - * next header starts at hdr_next. We're only interested in - * "Cookie:" headers. - */ - - val = http_header_match2(hdr_beg, hdr_end, "Cookie", 6); - if (!val) { - old_idx = cur_idx; - continue; - } - - del_from = NULL; /* nothing to be deleted */ - preserve_hdr = 0; /* assume we may kill the whole header */ - - /* Now look for cookies. Conforming to RFC2109, we have to support - * attributes whose name begin with a '$', and associate them with - * the right cookie, if we want to delete this cookie. - * So there are 3 cases for each cookie read : - * 1) it's a special attribute, beginning with a '$' : ignore it. - * 2) it's a server id cookie that we *MAY* want to delete : save - * some pointers on it (last semi-colon, beginning of cookie...) - * 3) it's an application cookie : we *MAY* have to delete a previous - * "special" cookie. - * At the end of loop, if a "special" cookie remains, we may have to - * remove it. If no application cookie persists in the header, we - * *MUST* delete it. - * - * Note: RFC2965 is unclear about the processing of spaces around - * the equal sign in the ATTR=VALUE form. A careful inspection of - * the RFC explicitly allows spaces before it, and not within the - * tokens (attrs or values). An inspection of RFC2109 allows that - * too but section 10.1.3 lets one think that spaces may be allowed - * after the equal sign too, resulting in some (rare) buggy - * implementations trying to do that. So let's do what servers do. - * Latest ietf draft forbids spaces all around. Also, earlier RFCs - * allowed quoted strings in values, with any possible character - * after a backslash, including control chars and delimitors, which - * causes parsing to become ambiguous. Browsers also allow spaces - * within values even without quotes. - * - * We have to keep multiple pointers in order to support cookie - * removal at the beginning, middle or end of header without - * corrupting the header. All of these headers are valid : - * - * Cookie:NAME1=VALUE1;NAME2=VALUE2;NAME3=VALUE3\r\n - * Cookie:NAME1=VALUE1;NAME2_ONLY ;NAME3=VALUE3\r\n - * Cookie: NAME1 = VALUE 1 ; NAME2 = VALUE2 ; NAME3 = VALUE3\r\n - * | | | | | | | | | - * | | | | | | | | hdr_end <--+ - * | | | | | | | +--> next - * | | | | | | +----> val_end - * | | | | | +-----------> val_beg - * | | | | +--------------> equal - * | | | +----------------> att_end - * | | +---------------------> att_beg - * | +--------------------------> prev - * +--------------------------------> hdr_beg - */ - - for (prev = hdr_beg + 6; prev < hdr_end; prev = next) { - /* Iterate through all cookies on this line */ - - /* find att_beg */ - att_beg = prev + 1; - while (att_beg < hdr_end && HTTP_IS_SPHT(*att_beg)) - att_beg++; - - /* find att_end : this is the first character after the last non - * space before the equal. It may be equal to hdr_end. - */ - equal = att_end = att_beg; - - while (equal < hdr_end) { - if (*equal == '=' || *equal == ',' || *equal == ';') - break; - if (HTTP_IS_SPHT(*equal++)) - continue; - att_end = equal; - } - - /* here, points to '=', a delimitor or the end. - * is between and , both may be identical. - */ - - /* look for end of cookie if there is an equal sign */ - if (equal < hdr_end && *equal == '=') { - /* look for the beginning of the value */ - val_beg = equal + 1; - while (val_beg < hdr_end && HTTP_IS_SPHT(*val_beg)) - val_beg++; - - /* find the end of the value, respecting quotes */ - next = http_find_cookie_value_end(val_beg, hdr_end); - - /* make val_end point to the first white space or delimitor after the value */ - val_end = next; - while (val_end > val_beg && HTTP_IS_SPHT(*(val_end - 1))) - val_end--; - } else { - val_beg = val_end = next = equal; - } - - /* We have nothing to do with attributes beginning with '$'. However, - * they will automatically be removed if a header before them is removed, - * since they're supposed to be linked together. - */ - if (*att_beg == '$') - continue; - - /* Ignore cookies with no equal sign */ - if (equal == next) { - /* This is not our cookie, so we must preserve it. But if we already - * scheduled another cookie for removal, we cannot remove the - * complete header, but we can remove the previous block itself. - */ - preserve_hdr = 1; - if (del_from != NULL) { - int delta = del_hdr_value(&req->buf, &del_from, prev); - val_end += delta; - next += delta; - hdr_end += delta; - hdr_next += delta; - cur_hdr->len += delta; - http_msg_move_end(&txn->req, delta); - prev = del_from; - del_from = NULL; - } - continue; - } - - /* if there are spaces around the equal sign, we need to - * strip them otherwise we'll get trouble for cookie captures, - * or even for rewrites. Since this happens extremely rarely, - * it does not hurt performance. - */ - if (unlikely(att_end != equal || val_beg > equal + 1)) { - int stripped_before = 0; - int stripped_after = 0; - - if (att_end != equal) { - stripped_before = b_rep_blk(&req->buf, att_end, equal, NULL, 0); - equal += stripped_before; - val_beg += stripped_before; - } - - if (val_beg > equal + 1) { - stripped_after = b_rep_blk(&req->buf, equal + 1, val_beg, NULL, 0); - val_beg += stripped_after; - stripped_before += stripped_after; - } - - val_end += stripped_before; - next += stripped_before; - hdr_end += stripped_before; - hdr_next += stripped_before; - cur_hdr->len += stripped_before; - http_msg_move_end(&txn->req, stripped_before); - } - /* now everything is as on the diagram above */ - - /* First, let's see if we want to capture this cookie. We check - * that we don't already have a client side cookie, because we - * can only capture one. Also as an optimisation, we ignore - * cookies shorter than the declared name. - */ - if (sess->fe->capture_name != NULL && txn->cli_cookie == NULL && - (val_end - att_beg >= sess->fe->capture_namelen) && - memcmp(att_beg, sess->fe->capture_name, sess->fe->capture_namelen) == 0) { - int log_len = val_end - att_beg; - - if ((txn->cli_cookie = pool_alloc(pool_head_capture)) == NULL) { - ha_alert("HTTP logging : out of memory.\n"); - } else { - if (log_len > sess->fe->capture_len) - log_len = sess->fe->capture_len; - memcpy(txn->cli_cookie, att_beg, log_len); - txn->cli_cookie[log_len] = 0; - } - } - - /* Persistence cookies in passive, rewrite or insert mode have the - * following form : - * - * Cookie: NAME=SRV[|[|]] - * - * For cookies in prefix mode, the form is : - * - * Cookie: NAME=SRV~VALUE - */ - if ((att_end - att_beg == s->be->cookie_len) && (s->be->cookie_name != NULL) && - (memcmp(att_beg, s->be->cookie_name, att_end - att_beg) == 0)) { - struct server *srv = s->be->srv; - char *delim; - - /* if we're in cookie prefix mode, we'll search the delimitor so that we - * have the server ID between val_beg and delim, and the original cookie between - * delim+1 and val_end. Otherwise, delim==val_end : - * - * Cookie: NAME=SRV; # in all but prefix modes - * Cookie: NAME=SRV~OPAQUE ; # in prefix mode - * | || || | |+-> next - * | || || | +--> val_end - * | || || +---------> delim - * | || |+------------> val_beg - * | || +-------------> att_end = equal - * | |+-----------------> att_beg - * | +------------------> prev - * +-------------------------> hdr_beg - */ - - if (s->be->ck_opts & PR_CK_PFX) { - for (delim = val_beg; delim < val_end; delim++) - if (*delim == COOKIE_DELIM) - break; - } else { - char *vbar1; - delim = val_end; - /* Now check if the cookie contains a date field, which would - * appear after a vertical bar ('|') just after the server name - * and before the delimiter. - */ - vbar1 = memchr(val_beg, COOKIE_DELIM_DATE, val_end - val_beg); - if (vbar1) { - /* OK, so left of the bar is the server's cookie and - * right is the last seen date. It is a base64 encoded - * 30-bit value representing the UNIX date since the - * epoch in 4-second quantities. - */ - int val; - delim = vbar1++; - if (val_end - vbar1 >= 5) { - val = b64tos30(vbar1); - if (val > 0) - txn->cookie_last_date = val << 2; - } - /* look for a second vertical bar */ - vbar1 = memchr(vbar1, COOKIE_DELIM_DATE, val_end - vbar1); - if (vbar1 && (val_end - vbar1 > 5)) { - val = b64tos30(vbar1 + 1); - if (val > 0) - txn->cookie_first_date = val << 2; - } - } - } - - /* if the cookie has an expiration date and the proxy wants to check - * it, then we do that now. We first check if the cookie is too old, - * then only if it has expired. We detect strict overflow because the - * time resolution here is not great (4 seconds). Cookies with dates - * in the future are ignored if their offset is beyond one day. This - * allows an admin to fix timezone issues without expiring everyone - * and at the same time avoids keeping unwanted side effects for too - * long. - */ - if (txn->cookie_first_date && s->be->cookie_maxlife && - (((signed)(date.tv_sec - txn->cookie_first_date) > (signed)s->be->cookie_maxlife) || - ((signed)(txn->cookie_first_date - date.tv_sec) > 86400))) { - txn->flags &= ~TX_CK_MASK; - txn->flags |= TX_CK_OLD; - delim = val_beg; // let's pretend we have not found the cookie - txn->cookie_first_date = 0; - txn->cookie_last_date = 0; - } - else if (txn->cookie_last_date && s->be->cookie_maxidle && - (((signed)(date.tv_sec - txn->cookie_last_date) > (signed)s->be->cookie_maxidle) || - ((signed)(txn->cookie_last_date - date.tv_sec) > 86400))) { - txn->flags &= ~TX_CK_MASK; - txn->flags |= TX_CK_EXPIRED; - delim = val_beg; // let's pretend we have not found the cookie - txn->cookie_first_date = 0; - txn->cookie_last_date = 0; - } - - /* Here, we'll look for the first running server which supports the cookie. - * This allows to share a same cookie between several servers, for example - * to dedicate backup servers to specific servers only. - * However, to prevent clients from sticking to cookie-less backup server - * when they have incidentely learned an empty cookie, we simply ignore - * empty cookies and mark them as invalid. - * The same behaviour is applied when persistence must be ignored. - */ - if ((delim == val_beg) || (s->flags & (SF_IGNORE_PRST | SF_ASSIGNED))) - srv = NULL; - - while (srv) { - if (srv->cookie && (srv->cklen == delim - val_beg) && - !memcmp(val_beg, srv->cookie, delim - val_beg)) { - if ((srv->cur_state != SRV_ST_STOPPED) || - (s->be->options & PR_O_PERSIST) || - (s->flags & SF_FORCE_PRST)) { - /* we found the server and we can use it */ - txn->flags &= ~TX_CK_MASK; - txn->flags |= (srv->cur_state != SRV_ST_STOPPED) ? TX_CK_VALID : TX_CK_DOWN; - s->flags |= SF_DIRECT | SF_ASSIGNED; - s->target = &srv->obj_type; - break; - } else { - /* we found a server, but it's down, - * mark it as such and go on in case - * another one is available. - */ - txn->flags &= ~TX_CK_MASK; - txn->flags |= TX_CK_DOWN; - } - } - srv = srv->next; - } - - if (!srv && !(txn->flags & (TX_CK_DOWN|TX_CK_EXPIRED|TX_CK_OLD))) { - /* no server matched this cookie or we deliberately skipped it */ - txn->flags &= ~TX_CK_MASK; - if ((s->flags & (SF_IGNORE_PRST | SF_ASSIGNED))) - txn->flags |= TX_CK_UNUSED; - else - txn->flags |= TX_CK_INVALID; - } - - /* depending on the cookie mode, we may have to either : - * - delete the complete cookie if we're in insert+indirect mode, so that - * the server never sees it ; - * - remove the server id from the cookie value, and tag the cookie as an - * application cookie so that it does not get accidently removed later, - * if we're in cookie prefix mode - */ - if ((s->be->ck_opts & PR_CK_PFX) && (delim != val_end)) { - int delta; /* negative */ - - delta = b_rep_blk(&req->buf, val_beg, delim + 1, NULL, 0); - val_end += delta; - next += delta; - hdr_end += delta; - hdr_next += delta; - cur_hdr->len += delta; - http_msg_move_end(&txn->req, delta); - - del_from = NULL; - preserve_hdr = 1; /* we want to keep this cookie */ - } - else if (del_from == NULL && - (s->be->ck_opts & (PR_CK_INS | PR_CK_IND)) == (PR_CK_INS | PR_CK_IND)) { - del_from = prev; - } - } else { - /* This is not our cookie, so we must preserve it. But if we already - * scheduled another cookie for removal, we cannot remove the - * complete header, but we can remove the previous block itself. - */ - preserve_hdr = 1; - - if (del_from != NULL) { - int delta = del_hdr_value(&req->buf, &del_from, prev); - if (att_beg >= del_from) - att_beg += delta; - if (att_end >= del_from) - att_end += delta; - val_beg += delta; - val_end += delta; - next += delta; - hdr_end += delta; - hdr_next += delta; - cur_hdr->len += delta; - http_msg_move_end(&txn->req, delta); - prev = del_from; - del_from = NULL; - } - } - - /* continue with next cookie on this header line */ - att_beg = next; - } /* for each cookie */ - - /* There are no more cookies on this line. - * We may still have one (or several) marked for deletion at the - * end of the line. We must do this now in two ways : - * - if some cookies must be preserved, we only delete from the - * mark to the end of line ; - * - if nothing needs to be preserved, simply delete the whole header - */ - if (del_from) { - int delta; - if (preserve_hdr) { - delta = del_hdr_value(&req->buf, &del_from, hdr_end); - hdr_end = del_from; - cur_hdr->len += delta; - } else { - delta = b_rep_blk(&req->buf, hdr_beg, hdr_next, NULL, 0); - - /* FIXME: this should be a separate function */ - txn->hdr_idx.v[old_idx].next = cur_hdr->next; - txn->hdr_idx.used--; - cur_hdr->len = 0; - cur_idx = old_idx; - } - hdr_next += delta; - http_msg_move_end(&txn->req, delta); - } - - /* check next header */ - old_idx = cur_idx; - } -} - - -/* Iterate the same filter through all response headers contained in . - * Returns 1 if this filter can be stopped upon return, otherwise 0. - */ -int apply_filter_to_resp_headers(struct stream *s, struct channel *rtr, struct hdr_exp *exp) -{ - char *cur_ptr, *cur_end, *cur_next; - int cur_idx, old_idx, last_hdr; - struct http_txn *txn = s->txn; - struct hdr_idx_elem *cur_hdr; - int delta, len; - - last_hdr = 0; - - cur_next = ci_head(rtr) + hdr_idx_first_pos(&txn->hdr_idx); - old_idx = 0; - - while (!last_hdr) { - if (unlikely(txn->flags & TX_SVDENY)) - return 1; - else if (unlikely(txn->flags & TX_SVALLOW) && - (exp->action == ACT_ALLOW || - exp->action == ACT_DENY)) - return 0; - - cur_idx = txn->hdr_idx.v[old_idx].next; - if (!cur_idx) - break; - - cur_hdr = &txn->hdr_idx.v[cur_idx]; - cur_ptr = cur_next; - cur_end = cur_ptr + cur_hdr->len; - cur_next = cur_end + cur_hdr->cr + 1; - - /* Now we have one header between cur_ptr and cur_end, - * and the next header starts at cur_next. - */ - - if (regex_exec_match2(exp->preg, cur_ptr, cur_end-cur_ptr, MAX_MATCH, pmatch, 0)) { - switch (exp->action) { - case ACT_ALLOW: - txn->flags |= TX_SVALLOW; - last_hdr = 1; - break; - - case ACT_DENY: - txn->flags |= TX_SVDENY; - last_hdr = 1; - break; - - case ACT_REPLACE: - len = exp_replace(trash.area, - trash.size, cur_ptr, - exp->replace, pmatch); - if (len < 0) - return -1; - - delta = b_rep_blk(&rtr->buf, cur_ptr, cur_end, trash.area, len); - - /* FIXME: if the user adds a newline in the replacement, the - * index will not be recalculated for now, and the new line - * will not be counted as a new header. - */ - - cur_end += delta; - cur_next += delta; - cur_hdr->len += delta; - http_msg_move_end(&txn->rsp, delta); - break; - - case ACT_REMOVE: - delta = b_rep_blk(&rtr->buf, cur_ptr, cur_next, NULL, 0); - cur_next += delta; - - http_msg_move_end(&txn->rsp, delta); - txn->hdr_idx.v[old_idx].next = cur_hdr->next; - txn->hdr_idx.used--; - cur_hdr->len = 0; - cur_end = NULL; /* null-term has been rewritten */ - cur_idx = old_idx; - break; - - } - } - - /* keep the link from this header to next one in case of later - * removal of next header. - */ - old_idx = cur_idx; - } - return 0; -} - - -/* Apply the filter to the status line in the response buffer . - * Returns 0 if nothing has been done, 1 if the filter has been applied, - * or -1 if a replacement resulted in an invalid status line. - */ -int apply_filter_to_sts_line(struct stream *s, struct channel *rtr, struct hdr_exp *exp) -{ - char *cur_ptr, *cur_end; - int done; - struct http_txn *txn = s->txn; - int delta, len; - - if (unlikely(txn->flags & TX_SVDENY)) - return 1; - else if (unlikely(txn->flags & TX_SVALLOW) && - (exp->action == ACT_ALLOW || - exp->action == ACT_DENY)) - return 0; - else if (exp->action == ACT_REMOVE) - return 0; - - done = 0; - - cur_ptr = ci_head(rtr); - cur_end = cur_ptr + txn->rsp.sl.st.l; - - /* Now we have the status line between cur_ptr and cur_end */ - - if (regex_exec_match2(exp->preg, cur_ptr, cur_end-cur_ptr, MAX_MATCH, pmatch, 0)) { - switch (exp->action) { - case ACT_ALLOW: - txn->flags |= TX_SVALLOW; - done = 1; - break; - - case ACT_DENY: - txn->flags |= TX_SVDENY; - done = 1; - break; - - case ACT_REPLACE: - len = exp_replace(trash.area, trash.size, - cur_ptr, exp->replace, pmatch); - if (len < 0) - return -1; - - delta = b_rep_blk(&rtr->buf, cur_ptr, cur_end, trash.area, len); - - /* FIXME: if the user adds a newline in the replacement, the - * index will not be recalculated for now, and the new line - * will not be counted as a new header. - */ - - http_msg_move_end(&txn->rsp, delta); - cur_end += delta; - cur_end = (char *)http_parse_stsline(&txn->rsp, - HTTP_MSG_RPVER, - cur_ptr, cur_end + 1, - NULL, NULL); - if (unlikely(!cur_end)) - return -1; - - /* we have a full respnse and we know that we have either a CR - * or an LF at . - */ - txn->status = strl2ui(ci_head(rtr) + txn->rsp.sl.st.c, txn->rsp.sl.st.c_l); - hdr_idx_set_start(&txn->hdr_idx, txn->rsp.sl.st.l, *cur_end == '\r'); - /* there is no point trying this regex on headers */ - return 1; - } - } - return done; -} - - - -/* - * Apply all the resp filters of proxy to all headers in buffer of stream . - * Returns 0 if everything is alright, or -1 in case a replacement lead to an - * unparsable response. - */ -int apply_filters_to_response(struct stream *s, struct channel *rtr, struct proxy *px) -{ - struct session *sess = s->sess; - struct http_txn *txn = s->txn; - struct hdr_exp *exp; - - for (exp = px->rsp_exp; exp; exp = exp->next) { - int ret; - - /* - * The interleaving of transformations and verdicts - * makes it difficult to decide to continue or stop - * the evaluation. - */ - - if (txn->flags & TX_SVDENY) - break; - - if ((txn->flags & TX_SVALLOW) && - (exp->action == ACT_ALLOW || exp->action == ACT_DENY || - exp->action == ACT_PASS)) { - exp = exp->next; - continue; - } - - /* if this filter had a condition, evaluate it now and skip to - * next filter if the condition does not match. - */ - if (exp->cond) { - ret = acl_exec_cond(exp->cond, px, sess, s, SMP_OPT_DIR_RES|SMP_OPT_FINAL); - ret = acl_pass(ret); - if (((struct acl_cond *)exp->cond)->pol == ACL_COND_UNLESS) - ret = !ret; - if (!ret) - continue; - } - - /* Apply the filter to the status line. */ - ret = apply_filter_to_sts_line(s, rtr, exp); - if (unlikely(ret < 0)) - return -1; - - if (likely(ret == 0)) { - /* The filter did not match the response, it can be - * iterated through all headers. - */ - if (unlikely(apply_filter_to_resp_headers(s, rtr, exp) < 0)) - return -1; - } - } - return 0; -} - - -/* - * Manage server-side cookies. It can impact performance by about 2% so it is - * desirable to call it only when needed. This function is also used when we - * just need to know if there is a cookie (eg: for check-cache). - */ -void manage_server_side_cookies(struct stream *s, struct channel *res) -{ - struct http_txn *txn = s->txn; - struct session *sess = s->sess; - struct server *srv; - int is_cookie2; - int cur_idx, old_idx, delta; - char *hdr_beg, *hdr_end, *hdr_next; - char *prev, *att_beg, *att_end, *equal, *val_beg, *val_end, *next; - - /* Iterate through the headers. - * we start with the start line. - */ - old_idx = 0; - hdr_next = ci_head(res) + hdr_idx_first_pos(&txn->hdr_idx); - - while ((cur_idx = txn->hdr_idx.v[old_idx].next)) { - struct hdr_idx_elem *cur_hdr; - int val; - - cur_hdr = &txn->hdr_idx.v[cur_idx]; - hdr_beg = hdr_next; - hdr_end = hdr_beg + cur_hdr->len; - hdr_next = hdr_end + cur_hdr->cr + 1; - - /* We have one full header between hdr_beg and hdr_end, and the - * next header starts at hdr_next. We're only interested in - * "Set-Cookie" and "Set-Cookie2" headers. - */ - - is_cookie2 = 0; - prev = hdr_beg + 10; - val = http_header_match2(hdr_beg, hdr_end, "Set-Cookie", 10); - if (!val) { - val = http_header_match2(hdr_beg, hdr_end, "Set-Cookie2", 11); - if (!val) { - old_idx = cur_idx; - continue; - } - is_cookie2 = 1; - prev = hdr_beg + 11; - } - - /* OK, right now we know we have a Set-Cookie* at hdr_beg, and - * points to the colon. - */ - txn->flags |= TX_SCK_PRESENT; - - /* Maybe we only wanted to see if there was a Set-Cookie (eg: - * check-cache is enabled) and we are not interested in checking - * them. Warning, the cookie capture is declared in the frontend. - */ - if (s->be->cookie_name == NULL && sess->fe->capture_name == NULL) - return; - - /* OK so now we know we have to process this response cookie. - * The format of the Set-Cookie header is slightly different - * from the format of the Cookie header in that it does not - * support the comma as a cookie delimiter (thus the header - * cannot be folded) because the Expires attribute described in - * the original Netscape's spec may contain an unquoted date - * with a comma inside. We have to live with this because - * many browsers don't support Max-Age and some browsers don't - * support quoted strings. However the Set-Cookie2 header is - * clean. - * - * We have to keep multiple pointers in order to support cookie - * removal at the beginning, middle or end of header without - * corrupting the header (in case of set-cookie2). A special - * pointer, points to the beginning of the set-cookie-av - * fields after the first semi-colon. The pointer points - * either to the end of line (set-cookie) or next unquoted comma - * (set-cookie2). All of these headers are valid : - * - * Set-Cookie: NAME1 = VALUE 1 ; Secure; Path="/"\r\n - * Set-Cookie:NAME=VALUE; Secure; Expires=Thu, 01-Jan-1970 00:00:01 GMT\r\n - * Set-Cookie: NAME = VALUE ; Secure; Expires=Thu, 01-Jan-1970 00:00:01 GMT\r\n - * Set-Cookie2: NAME1 = VALUE 1 ; Max-Age=0, NAME2=VALUE2; Discard\r\n - * | | | | | | | | | | - * | | | | | | | | +-> next hdr_end <--+ - * | | | | | | | +------------> scav - * | | | | | | +--------------> val_end - * | | | | | +--------------------> val_beg - * | | | | +----------------------> equal - * | | | +------------------------> att_end - * | | +----------------------------> att_beg - * | +------------------------------> prev - * +-----------------------------------------> hdr_beg - */ - - for (; prev < hdr_end; prev = next) { - /* Iterate through all cookies on this line */ - - /* find att_beg */ - att_beg = prev + 1; - while (att_beg < hdr_end && HTTP_IS_SPHT(*att_beg)) - att_beg++; - - /* find att_end : this is the first character after the last non - * space before the equal. It may be equal to hdr_end. - */ - equal = att_end = att_beg; - - while (equal < hdr_end) { - if (*equal == '=' || *equal == ';' || (is_cookie2 && *equal == ',')) - break; - if (HTTP_IS_SPHT(*equal++)) - continue; - att_end = equal; - } - - /* here, points to '=', a delimitor or the end. - * is between and , both may be identical. - */ - - /* look for end of cookie if there is an equal sign */ - if (equal < hdr_end && *equal == '=') { - /* look for the beginning of the value */ - val_beg = equal + 1; - while (val_beg < hdr_end && HTTP_IS_SPHT(*val_beg)) - val_beg++; - - /* find the end of the value, respecting quotes */ - next = http_find_cookie_value_end(val_beg, hdr_end); - - /* make val_end point to the first white space or delimitor after the value */ - val_end = next; - while (val_end > val_beg && HTTP_IS_SPHT(*(val_end - 1))) - val_end--; - } else { - /* points to next comma, semi-colon or EOL */ - val_beg = val_end = next = equal; - } - - if (next < hdr_end) { - /* Set-Cookie2 supports multiple cookies, and points to - * a colon or semi-colon before the end. So skip all attr-value - * pairs and look for the next comma. For Set-Cookie, since - * commas are permitted in values, skip to the end. - */ - if (is_cookie2) - next = http_find_hdr_value_end(next, hdr_end); - else - next = hdr_end; - } - - /* Now everything is as on the diagram above */ - - /* Ignore cookies with no equal sign */ - if (equal == val_end) - continue; - - /* If there are spaces around the equal sign, we need to - * strip them otherwise we'll get trouble for cookie captures, - * or even for rewrites. Since this happens extremely rarely, - * it does not hurt performance. - */ - if (unlikely(att_end != equal || val_beg > equal + 1)) { - int stripped_before = 0; - int stripped_after = 0; - - if (att_end != equal) { - stripped_before = b_rep_blk(&res->buf, att_end, equal, NULL, 0); - equal += stripped_before; - val_beg += stripped_before; - } - - if (val_beg > equal + 1) { - stripped_after = b_rep_blk(&res->buf, equal + 1, val_beg, NULL, 0); - val_beg += stripped_after; - stripped_before += stripped_after; - } - - val_end += stripped_before; - next += stripped_before; - hdr_end += stripped_before; - hdr_next += stripped_before; - cur_hdr->len += stripped_before; - http_msg_move_end(&txn->rsp, stripped_before); - } - - /* First, let's see if we want to capture this cookie. We check - * that we don't already have a server side cookie, because we - * can only capture one. Also as an optimisation, we ignore - * cookies shorter than the declared name. - */ - if (sess->fe->capture_name != NULL && - txn->srv_cookie == NULL && - (val_end - att_beg >= sess->fe->capture_namelen) && - memcmp(att_beg, sess->fe->capture_name, sess->fe->capture_namelen) == 0) { - int log_len = val_end - att_beg; - if ((txn->srv_cookie = pool_alloc(pool_head_capture)) == NULL) { - ha_alert("HTTP logging : out of memory.\n"); - } - else { - if (log_len > sess->fe->capture_len) - log_len = sess->fe->capture_len; - memcpy(txn->srv_cookie, att_beg, log_len); - txn->srv_cookie[log_len] = 0; - } - } - - srv = objt_server(s->target); - /* now check if we need to process it for persistence */ - if (!(s->flags & SF_IGNORE_PRST) && - (att_end - att_beg == s->be->cookie_len) && (s->be->cookie_name != NULL) && - (memcmp(att_beg, s->be->cookie_name, att_end - att_beg) == 0)) { - /* assume passive cookie by default */ - txn->flags &= ~TX_SCK_MASK; - txn->flags |= TX_SCK_FOUND; - - /* If the cookie is in insert mode on a known server, we'll delete - * this occurrence because we'll insert another one later. - * We'll delete it too if the "indirect" option is set and we're in - * a direct access. - */ - if (s->be->ck_opts & PR_CK_PSV) { - /* The "preserve" flag was set, we don't want to touch the - * server's cookie. - */ - } - else if ((srv && (s->be->ck_opts & PR_CK_INS)) || - ((s->flags & SF_DIRECT) && (s->be->ck_opts & PR_CK_IND))) { - /* this cookie must be deleted */ - if (*prev == ':' && next == hdr_end) { - /* whole header */ - delta = b_rep_blk(&res->buf, hdr_beg, hdr_next, NULL, 0); - txn->hdr_idx.v[old_idx].next = cur_hdr->next; - txn->hdr_idx.used--; - cur_hdr->len = 0; - cur_idx = old_idx; - hdr_next += delta; - http_msg_move_end(&txn->rsp, delta); - /* note: while both invalid now, and - * are still equal, so the for() will stop as expected. - */ - } else { - /* just remove the value */ - int delta = del_hdr_value(&res->buf, &prev, next); - next = prev; - hdr_end += delta; - hdr_next += delta; - cur_hdr->len += delta; - http_msg_move_end(&txn->rsp, delta); - } - txn->flags &= ~TX_SCK_MASK; - txn->flags |= TX_SCK_DELETED; - /* and go on with next cookie */ - } - else if (srv && srv->cookie && (s->be->ck_opts & PR_CK_RW)) { - /* replace bytes val_beg->val_end with the cookie name associated - * with this server since we know it. - */ - delta = b_rep_blk(&res->buf, val_beg, val_end, srv->cookie, srv->cklen); - next += delta; - hdr_end += delta; - hdr_next += delta; - cur_hdr->len += delta; - http_msg_move_end(&txn->rsp, delta); - - txn->flags &= ~TX_SCK_MASK; - txn->flags |= TX_SCK_REPLACED; - } - else if (srv && srv->cookie && (s->be->ck_opts & PR_CK_PFX)) { - /* insert the cookie name associated with this server - * before existing cookie, and insert a delimiter between them.. - */ - delta = b_rep_blk(&res->buf, val_beg, val_beg, srv->cookie, srv->cklen + 1); - next += delta; - hdr_end += delta; - hdr_next += delta; - cur_hdr->len += delta; - http_msg_move_end(&txn->rsp, delta); - - val_beg[srv->cklen] = COOKIE_DELIM; - txn->flags &= ~TX_SCK_MASK; - txn->flags |= TX_SCK_REPLACED; - } - } - /* that's done for this cookie, check the next one on the same - * line when next != hdr_end (only if is_cookie2). - */ - } - /* check next header */ - old_idx = cur_idx; - } -} - - -/* - * Parses the Cache-Control and Pragma request header fields to determine if - * the request may be served from the cache and/or if it is cacheable. Updates - * s->txn->flags. - */ -void check_request_for_cacheability(struct stream *s, struct channel *chn) -{ - struct http_txn *txn = s->txn; - char *p1, *p2; - char *cur_ptr, *cur_end, *cur_next; - int pragma_found; - int cc_found; - int cur_idx; - - if (IS_HTX_STRM(s)) - return htx_check_request_for_cacheability(s, chn); - - if ((txn->flags & (TX_CACHEABLE|TX_CACHE_IGNORE)) == TX_CACHE_IGNORE) - return; /* nothing more to do here */ - - cur_idx = 0; - pragma_found = cc_found = 0; - cur_next = ci_head(chn) + hdr_idx_first_pos(&txn->hdr_idx); - - while ((cur_idx = txn->hdr_idx.v[cur_idx].next)) { - struct hdr_idx_elem *cur_hdr; - int val; - - cur_hdr = &txn->hdr_idx.v[cur_idx]; - cur_ptr = cur_next; - cur_end = cur_ptr + cur_hdr->len; - cur_next = cur_end + cur_hdr->cr + 1; - - /* We have one full header between cur_ptr and cur_end, and the - * next header starts at cur_next. - */ - - val = http_header_match2(cur_ptr, cur_end, "Pragma", 6); - if (val) { - if ((cur_end - (cur_ptr + val) >= 8) && - strncasecmp(cur_ptr + val, "no-cache", 8) == 0) { - pragma_found = 1; - continue; - } - } - - /* Don't use the cache and don't try to store if we found the - * Authorization header */ - val = http_header_match2(cur_ptr, cur_end, "Authorization", 13); - if (val) { - txn->flags &= ~TX_CACHEABLE & ~TX_CACHE_COOK; - txn->flags |= TX_CACHE_IGNORE; - continue; - } - - val = http_header_match2(cur_ptr, cur_end, "Cache-control", 13); - if (!val) - continue; - - /* OK, right now we know we have a cache-control header at cur_ptr */ - cc_found = 1; - p1 = cur_ptr + val; /* first non-space char after 'cache-control:' */ - - if (p1 >= cur_end) /* no more info */ - continue; - - /* p1 is at the beginning of the value */ - p2 = p1; - while (p2 < cur_end && *p2 != '=' && *p2 != ',' && !isspace((unsigned char)*p2)) - p2++; - - /* we have a complete value between p1 and p2. We don't check the - * values after max-age, max-stale nor min-fresh, we simply don't - * use the cache when they're specified. - */ - if (((p2 - p1 == 7) && strncasecmp(p1, "max-age", 7) == 0) || - ((p2 - p1 == 8) && strncasecmp(p1, "no-cache", 8) == 0) || - ((p2 - p1 == 9) && strncasecmp(p1, "max-stale", 9) == 0) || - ((p2 - p1 == 9) && strncasecmp(p1, "min-fresh", 9) == 0)) { - txn->flags |= TX_CACHE_IGNORE; - continue; - } - - if ((p2 - p1 == 8) && strncasecmp(p1, "no-store", 8) == 0) { - txn->flags &= ~TX_CACHEABLE & ~TX_CACHE_COOK; - continue; - } - } - - /* RFC7234#5.4: - * When the Cache-Control header field is also present and - * understood in a request, Pragma is ignored. - * When the Cache-Control header field is not present in a - * request, caches MUST consider the no-cache request - * pragma-directive as having the same effect as if - * "Cache-Control: no-cache" were present. - */ - if (!cc_found && pragma_found) - txn->flags |= TX_CACHE_IGNORE; -} - -/* - * Check if response is cacheable or not. Updates s->txn->flags. - */ -void check_response_for_cacheability(struct stream *s, struct channel *rtr) -{ - struct http_txn *txn = s->txn; - char *p1, *p2; - - char *cur_ptr, *cur_end, *cur_next; - int cur_idx; - - - if (IS_HTX_STRM(s)) - return htx_check_response_for_cacheability(s, rtr); - - if (txn->status < 200) { - /* do not try to cache interim responses! */ - txn->flags &= ~TX_CACHEABLE & ~TX_CACHE_COOK; - return; - } - - /* Iterate through the headers. - * we start with the start line. - */ - cur_idx = 0; - cur_next = ci_head(rtr) + hdr_idx_first_pos(&txn->hdr_idx); - - while ((cur_idx = txn->hdr_idx.v[cur_idx].next)) { - struct hdr_idx_elem *cur_hdr; - int val; - - cur_hdr = &txn->hdr_idx.v[cur_idx]; - cur_ptr = cur_next; - cur_end = cur_ptr + cur_hdr->len; - cur_next = cur_end + cur_hdr->cr + 1; - - /* We have one full header between cur_ptr and cur_end, and the - * next header starts at cur_next. - */ - - val = http_header_match2(cur_ptr, cur_end, "Pragma", 6); - if (val) { - if ((cur_end - (cur_ptr + val) >= 8) && - strncasecmp(cur_ptr + val, "no-cache", 8) == 0) { - txn->flags &= ~TX_CACHEABLE & ~TX_CACHE_COOK; - return; - } - } - - val = http_header_match2(cur_ptr, cur_end, "Cache-control", 13); - if (!val) - continue; - - /* OK, right now we know we have a cache-control header at cur_ptr */ - - p1 = cur_ptr + val; /* first non-space char after 'cache-control:' */ - - if (p1 >= cur_end) /* no more info */ - continue; - - /* p1 is at the beginning of the value */ - p2 = p1; - - while (p2 < cur_end && *p2 != '=' && *p2 != ',' && !isspace((unsigned char)*p2)) - p2++; - - /* we have a complete value between p1 and p2 */ - if (p2 < cur_end && *p2 == '=') { - if (((cur_end - p2) > 1 && (p2 - p1 == 7) && strncasecmp(p1, "max-age=0", 9) == 0) || - ((cur_end - p2) > 1 && (p2 - p1 == 8) && strncasecmp(p1, "s-maxage=0", 10) == 0)) { - txn->flags &= ~TX_CACHEABLE & ~TX_CACHE_COOK; - continue; - } - - /* we have something of the form no-cache="set-cookie" */ - if ((cur_end - p1 >= 21) && - strncasecmp(p1, "no-cache=\"set-cookie", 20) == 0 - && (p1[20] == '"' || p1[20] == ',')) - txn->flags &= ~TX_CACHE_COOK; - continue; - } - - /* OK, so we know that either p2 points to the end of string or to a comma */ - if (((p2 - p1 == 7) && strncasecmp(p1, "private", 7) == 0) || - ((p2 - p1 == 8) && strncasecmp(p1, "no-cache", 8) == 0) || - ((p2 - p1 == 8) && strncasecmp(p1, "no-store", 8) == 0)) { - txn->flags &= ~TX_CACHEABLE & ~TX_CACHE_COOK; - return; - } - - if ((p2 - p1 == 6) && strncasecmp(p1, "public", 6) == 0) { - txn->flags |= TX_CACHEABLE | TX_CACHE_COOK; - continue; - } - } -} - - -/* - * In a GET, HEAD or POST request, check if the requested URI matches the stats uri - * for the current backend. - * - * It is assumed that the request is either a HEAD, GET, or POST and that the - * uri_auth field is valid. - * - * Returns 1 if stats should be provided, otherwise 0. - */ -int stats_check_uri(struct stream_interface *si, struct http_txn *txn, struct proxy *backend) -{ - struct uri_auth *uri_auth = backend->uri_auth; - struct http_msg *msg = &txn->req; - const char *uri = ci_head(msg->chn)+ msg->sl.rq.u; - - if (!uri_auth) - return 0; - - if (txn->meth != HTTP_METH_GET && txn->meth != HTTP_METH_HEAD && txn->meth != HTTP_METH_POST) - return 0; - - /* check URI size */ - if (uri_auth->uri_len > msg->sl.rq.u_l) - return 0; - - if (memcmp(uri, uri_auth->uri_prefix, uri_auth->uri_len) != 0) - return 0; - - return 1; -} - -/* Append the description of what is present in error snapshot into . - * The description must be small enough to always fit in a trash. The output - * buffer may be the trash so the trash must not be used inside this function. - */ -void http_show_error_snapshot(struct buffer *out, const struct error_snapshot *es) -{ - chunk_appendf(out, - " stream #%d, stream flags 0x%08x, tx flags 0x%08x\n" - " HTTP msg state %s(%d), msg flags 0x%08x\n" - " HTTP chunk len %lld bytes, HTTP body len %lld bytes, channel flags 0x%08x :\n", - es->ctx.http.sid, es->ctx.http.s_flags, es->ctx.http.t_flags, - h1_msg_state_str(es->ctx.http.state), es->ctx.http.state, - es->ctx.http.m_flags, es->ctx.http.m_clen, - es->ctx.http.m_blen, es->ctx.http.b_flags); -} - -/* - * Capture a bad request or response and archive it in the proxy's structure. - * By default it tries to report the error position as msg->err_pos. However if - * this one is not set, it will then report msg->next, which is the last known - * parsing point. The function is able to deal with wrapping buffers. It always - * displays buffers as a contiguous area starting at buf->p. The direction is - * determined thanks to the channel's flags. - */ -void http_capture_bad_message(struct proxy *proxy, struct stream *s, - struct http_msg *msg, - enum h1_state state, struct proxy *other_end) -{ - union error_snapshot_ctx ctx; - long ofs; - - /* http-specific part now */ - ctx.http.sid = s->uniq_id; - ctx.http.state = state; - ctx.http.b_flags = msg->chn->flags; - ctx.http.s_flags = s->flags; - ctx.http.t_flags = s->txn->flags; - ctx.http.m_flags = msg->flags; - ctx.http.m_clen = msg->chunk_len; - ctx.http.m_blen = msg->body_len; - - ofs = msg->chn->total - ci_data(msg->chn); - if (ofs < 0) - ofs = 0; - - proxy_capture_error(proxy, !!(msg->chn->flags & CF_ISRESP), - other_end, s->target, - strm_sess(s), &msg->chn->buf, - ofs, co_data(msg->chn), - (msg->err_pos >= 0) ? msg->err_pos : msg->next, - &ctx, http_show_error_snapshot); -} - -/* - * Print a debug line with a header. Always stop at the first CR or LF char, - * so it is safe to pass it a full buffer if needed. If is not NULL, an - * arrow is printed after the line which contains the pointer. - */ -void debug_hdr(const char *dir, struct stream *s, const char *start, const char *end) -{ - struct session *sess = strm_sess(s); - int max; - - chunk_printf(&trash, "%08x:%s.%s[%04x:%04x]: ", s->uniq_id, s->be->id, - dir, - objt_conn(sess->origin) ? (unsigned short)objt_conn(sess->origin)->handle.fd : -1, - objt_cs(s->si[1].end) ? (unsigned short)objt_cs(s->si[1].end)->conn->handle.fd : -1); - - for (max = 0; start + max < end; max++) - if (start[max] == '\r' || start[max] == '\n') - break; +DECLARE_POOL(pool_head_http_txn, "http_txn", sizeof(struct http_txn)); +DECLARE_POOL(pool_head_uniqueid, "uniqueid", UNIQUEID_LEN); - UBOUND(max, trash.size - trash.data - 3); - trash.data += strlcpy2(trash.area + trash.data, start, max + 1); - trash.area[trash.data++] = '\n'; - shut_your_big_mouth_gcc(write(1, trash.area, trash.data)); -} +struct pool_head *pool_head_requri = NULL; +struct pool_head *pool_head_capture = NULL; /* Allocate a new HTTP transaction for stream unless there is one already. - * The hdr_idx is allocated as well. In case of allocation failure, everything - * allocated is freed and NULL is returned. Otherwise the new transaction is - * assigned to the stream and returned. + * In case of allocation failure, everything allocated is freed and NULL is + * returned. Otherwise the new transaction is assigned to the stream and + * returned. */ struct http_txn *http_alloc_txn(struct stream *s) { @@ -7152,13 +97,6 @@ struct http_txn *http_alloc_txn(struct stream *s) if (!txn) return txn; - txn->hdr_idx.size = global.tune.max_http_hdr; - txn->hdr_idx.v = pool_alloc(pool_head_hdr_idx); - if (!txn->hdr_idx.v) { - pool_free(pool_head_http_txn, txn); - return NULL; - } - s->txn = txn; return txn; } @@ -7166,20 +104,12 @@ struct http_txn *http_alloc_txn(struct stream *s) void http_txn_reset_req(struct http_txn *txn) { txn->req.flags = 0; - txn->req.sol = txn->req.eol = txn->req.eoh = 0; /* relative to the buffer */ - txn->req.next = 0; - txn->req.chunk_len = 0LL; - txn->req.body_len = 0LL; txn->req.msg_state = HTTP_MSG_RQBEFORE; /* at the very beginning of the request */ } void http_txn_reset_res(struct http_txn *txn) { txn->rsp.flags = 0; - txn->rsp.sol = txn->rsp.eol = txn->rsp.eoh = 0; /* relative to the buffer */ - txn->rsp.next = 0; - txn->rsp.chunk_len = 0LL; - txn->rsp.body_len = 0LL; txn->rsp.msg_state = HTTP_MSG_RPBEFORE; /* at the very beginning of the response */ } @@ -7191,7 +121,6 @@ void http_txn_reset_res(struct http_txn *txn) void http_init_txn(struct stream *s) { struct http_txn *txn = s->txn; - struct proxy *fe = strm_fe(s); struct conn_stream *cs = objt_cs(s->si[0].end); txn->flags = ((cs && cs->flags & CS_FL_NOT_FIRST) @@ -7215,13 +144,6 @@ void http_init_txn(struct stream *s) txn->auth.method = HTTP_AUTH_UNKNOWN; - txn->req.err_pos = txn->rsp.err_pos = -2; /* block buggy requests/responses */ - if (fe->options2 & PR_O2_REQBUG_OK) - txn->req.err_pos = -1; /* let buggy requests pass */ - - if (txn->hdr_idx.v) - hdr_idx_init(&txn->hdr_idx); - vars_init(&s->vars_txn, SCOPE_TXN); vars_init(&s->vars_reqres, SCOPE_REQ); } @@ -7314,150 +236,6 @@ void http_reset_txn(struct stream *s) s->si[1].hcto = TICK_ETERNITY; } -/* This function executes one of the set-{method,path,query,uri} actions. It - * takes the string from the variable 'replace' with length 'len', then modifies - * the relevant part of the request line accordingly. Then it updates various - * pointers to the next elements which were moved, and the total buffer length. - * It finds the action to be performed in p[2], previously filled by function - * parse_set_req_line(). It returns 0 in case of success, -1 in case of internal - * error, though this can be revisited when this code is finally exploited. - * - * 'action' can be '0' to replace method, '1' to replace path, '2' to replace - * query string and 3 to replace uri. - * - * In query string case, the mark question '?' must be set at the start of the - * string by the caller, event if the replacement query string is empty. - */ -int http_replace_req_line(int action, const char *replace, int len, - struct proxy *px, struct stream *s) -{ - struct http_txn *txn = s->txn; - char *cur_ptr, *cur_end; - int offset = 0; - int delta; - - if (IS_HTX_STRM(s)) - return htx_req_replace_stline(action, replace, len, px, s); - - switch (action) { - case 0: // method - cur_ptr = ci_head(&s->req); - cur_end = cur_ptr + txn->req.sl.rq.m_l; - - /* adjust req line offsets and lengths */ - delta = len - offset - (cur_end - cur_ptr); - txn->req.sl.rq.m_l += delta; - txn->req.sl.rq.u += delta; - txn->req.sl.rq.v += delta; - break; - - case 1: // path - cur_ptr = http_txn_get_path(txn); - if (!cur_ptr) - cur_ptr = ci_head(&s->req) + txn->req.sl.rq.u; - - cur_end = cur_ptr; - while (cur_end < ci_head(&s->req) + txn->req.sl.rq.u + txn->req.sl.rq.u_l && *cur_end != '?') - cur_end++; - - /* adjust req line offsets and lengths */ - delta = len - offset - (cur_end - cur_ptr); - txn->req.sl.rq.u_l += delta; - txn->req.sl.rq.v += delta; - break; - - case 2: // query - offset = 1; - cur_ptr = ci_head(&s->req) + txn->req.sl.rq.u; - cur_end = cur_ptr + txn->req.sl.rq.u_l; - while (cur_ptr < cur_end && *cur_ptr != '?') - cur_ptr++; - - /* skip the question mark or indicate that we must insert it - * (but only if the format string is not empty then). - */ - if (cur_ptr < cur_end) - cur_ptr++; - else if (len > 1) - offset = 0; - - /* adjust req line offsets and lengths */ - delta = len - offset - (cur_end - cur_ptr); - txn->req.sl.rq.u_l += delta; - txn->req.sl.rq.v += delta; - break; - - case 3: // uri - cur_ptr = ci_head(&s->req) + txn->req.sl.rq.u; - cur_end = cur_ptr + txn->req.sl.rq.u_l; - - /* adjust req line offsets and lengths */ - delta = len - offset - (cur_end - cur_ptr); - txn->req.sl.rq.u_l += delta; - txn->req.sl.rq.v += delta; - break; - - default: - return -1; - } - - /* commit changes and adjust end of message */ - delta = b_rep_blk(&s->req.buf, cur_ptr, cur_end, replace + offset, len - offset); - txn->req.sl.rq.l += delta; - txn->hdr_idx.v[0].len += delta; - http_msg_move_end(&txn->req, delta); - return 0; -} - -/* This function replace the HTTP status code and the associated message. The - * variable contains the new status code. This function never fails. - */ -void http_set_status(unsigned int status, const char *reason, struct stream *s) -{ - struct http_txn *txn = s->txn; - char *cur_ptr, *cur_end; - int delta; - char *res; - int c_l; - const char *msg = reason; - int msg_len; - - if (IS_HTX_STRM(s)) - return htx_res_set_status(status, reason, s); - - chunk_reset(&trash); - - res = ultoa_o(status, trash.area, trash.size); - c_l = res - trash.area; - - trash.area[c_l] = ' '; - trash.data = c_l + 1; - - /* Do we have a custom reason format string? */ - if (msg == NULL) - msg = http_get_reason(status); - msg_len = strlen(msg); - strncpy(&trash.area[trash.data], msg, trash.size - trash.data); - trash.data += msg_len; - - cur_ptr = ci_head(&s->res) + txn->rsp.sl.st.c; - cur_end = ci_head(&s->res) + txn->rsp.sl.st.r + txn->rsp.sl.st.r_l; - - /* commit changes and adjust message */ - delta = b_rep_blk(&s->res.buf, cur_ptr, cur_end, trash.area, - trash.data); - - /* adjust res line offsets and lengths */ - txn->rsp.sl.st.r += c_l - txn->rsp.sl.st.c_l; - txn->rsp.sl.st.c_l = c_l; - txn->rsp.sl.st.r_l = msg_len; - - delta = trash.data - (cur_end - cur_ptr); - txn->rsp.sl.st.l += delta; - txn->hdr_idx.v[0].len += delta; - http_msg_move_end(&txn->rsp, delta); -} - /* * Local variables: * c-indent-level: 8 diff --git a/src/proto_htx.c b/src/proto_htx.c index 89e428496a..35172696b6 100644 --- a/src/proto_htx.c +++ b/src/proto_htx.c @@ -24,7 +24,6 @@ #include #include #include -#include #include #include #include diff --git a/src/proxy.c b/src/proxy.c index 8a5c7f14e8..94b26eb99c 100644 --- a/src/proxy.c +++ b/src/proxy.c @@ -41,7 +41,6 @@ #include #include #include -#include #include #include #include @@ -1428,7 +1427,7 @@ int stream_set_backend(struct stream *s, struct proxy *be) s->req.analysers |= be->be_req_ana & ~(strm_li(s) ? strm_li(s)->analysers : 0); /* If the target backend requires HTTP processing, we have to allocate - * the HTTP transaction and hdr_idx if we did not have one. + * the HTTP transaction if we did not have one. */ if (unlikely(!s->txn && be->http_needed)) { if (unlikely(!http_alloc_txn(s))) @@ -1444,9 +1443,6 @@ int stream_set_backend(struct stream *s, struct proxy *be) s->req.analysers |= AN_REQ_FLT_HTTP_HDRS; if (s->txn) { - if (be->options2 & PR_O2_RSPBUG_OK) - s->txn->rsp.err_pos = -1; /* let buggy responses pass */ - /* If we chain a TCP frontend to an HTX backend, we must upgrade * the client mux */ if (!IS_HTX_STRM(s) && be->mode == PR_MODE_HTTP) { @@ -1478,8 +1474,7 @@ int stream_set_backend(struct stream *s, struct proxy *be) s->txn->req.flags |= HTTP_MSGF_WAIT_CONN; /* we may request to parse a request body */ - if ((be->options & PR_O_WREQ_BODY) && - (s->txn->req.body_len || (s->txn->req.flags & HTTP_MSGF_TE_CHNK))) + if (be->options & PR_O_WREQ_BODY) s->req.analysers |= AN_REQ_HTTP_BODY; } diff --git a/src/stream.c b/src/stream.c index 3353b5a3d0..396100525f 100644 --- a/src/stream.c +++ b/src/stream.c @@ -46,7 +46,6 @@ #include #include #include -#include #include #include #include @@ -429,7 +428,6 @@ static void stream_free(struct stream *s) } if (s->txn) { - pool_free(pool_head_hdr_idx, s->txn->hdr_idx.v); pool_free(pool_head_http_txn, s->txn); s->txn = NULL; } @@ -495,7 +493,6 @@ static void stream_free(struct stream *s) if (fe && unlikely(fe->state == PR_STSTOPPED)) { pool_flush(pool_head_buffer); pool_flush(pool_head_http_txn); - pool_flush(pool_head_hdr_idx); pool_flush(pool_head_requri); pool_flush(pool_head_capture); pool_flush(pool_head_stream); diff --git a/src/tcp_rules.c b/src/tcp_rules.c index d81ffe3a33..99af7c7760 100644 --- a/src/tcp_rules.c +++ b/src/tcp_rules.c @@ -743,7 +743,7 @@ static int tcp_parse_request_rule(char **args, int arg, int section_type, curpx->req_cap = hdr; curpx->to_log |= LW_REQHDR; - /* check if we need to allocate an hdr_idx struct for HTTP parsing */ + /* check if we need to allocate an http_txn struct for HTTP parsing */ curpx->http_needed |= !!(expr->fetch->use & SMP_USE_HTTP_ANY); rule->arg.cap.expr = expr; @@ -781,7 +781,7 @@ static int tcp_parse_request_rule(char **args, int arg, int section_type, return -1; } - /* check if we need to allocate an hdr_idx struct for HTTP parsing */ + /* check if we need to allocate an http_txn struct for HTTP parsing */ curpx->http_needed |= !!(expr->fetch->use & SMP_USE_HTTP_ANY); if (strcmp(args[arg], "table") == 0) {