Changes with Apache 2.0.14-dev
+ *) Begin to move protocol independant functions out of mod_http. The goal
+ is to have only functions that are HTTP specific in the http directory.
+ [Ryan Bloom]
+
Changes with Apache 2.0.13
*) Don't assume that there will always be multiple calls to the byterange
INSTALL_DATA = $(INSTALL) -m 644
INSTALL_PROGRAM = $(INSTALL) -m 755
-DEFS = -I. -I$(srcdir) -I$(top_srcdir)/server/mpm/$(MPM_NAME)
+DEFS = -I. -I$(srcdir) -I$(top_srcdir)/server/mpm/$(MPM_NAME) -I$(top_srcdir)/modules/http
# Suffixes
#include "apr_portable.h"
#include "apr_mmap.h"
#include "apr_buckets.h"
+#include "util_filter.h"
#ifdef __cplusplus
extern "C" {
*/
request_rec *ap_read_request(conn_rec *c);
-/**
- * Send the minimal part of an HTTP response header.
- * @param r The current request
- * @param bb The brigade to add the header to.
- * @warning Modules should be very careful about using this, and should
- * prefer ap_send_http_header(). Much of the HTTP/1.1 implementation
- * correctness depends on code in ap_send_http_header().
- * @deffunc void ap_basic_http_header(request_rec *r, apr_bucket_brigade *bb)
- */
-AP_DECLARE(void) ap_basic_http_header(request_rec *r, apr_bucket_brigade *bb);
-
-/**
- * Send the Status-Line and header fields for HTTP response
- * @param r The current request
- * @deffunc void ap_send_http_header(request_rec *r)
- */
-AP_DECLARE(void) ap_send_http_header(request_rec *r);
-
-
/* Finish up stuff after a request */
/**
*/
AP_DECLARE(apr_time_t) ap_rationalize_mtime(request_rec *r, apr_time_t mtime);
+/**
+ * Build the content-type that should be sent to the client from the
+ * content-type specified. The following rules are followed:
+ * - if type is NULL, type is set to ap_default_type(r)
+ * - if charset adding is disabled, stop processing and return type.
+ * - then, if there are no parameters on type, add the default charset
+ * - return type
+ * @param r The current request
+ * @return The content-type
+ * @deffunc const char *ap_make_content_type(request_rec *r, const char *type);
+ */
+AP_DECLARE(const char *) ap_make_content_type(request_rec *r, const char *type);
+
/**
* Construct an entity tag from the resource information. If it's a real
* file, build in some of the file characteristics.
AP_DECLARE(int) ap_discard_request_body(request_rec *r);
-/* Sending a byterange */
-
/**
* Setup the output headers so that the client knows how to authenticate
* itself the next time, if an authentication request failed. This function
AP_DECLARE(apr_bucket *) ap_bucket_error_create(int error,
const char *buf, apr_pool_t *p);
+AP_DECLARE_NONSTD(apr_status_t) ap_byterange_filter(ap_filter_t *f, apr_bucket_brigade *b);
+AP_DECLARE_NONSTD(apr_status_t) ap_http_header_filter(ap_filter_t *f, apr_bucket_brigade *b);
+AP_DECLARE_NONSTD(apr_status_t) ap_content_length_filter(ap_filter_t *,
+ apr_bucket_brigade *);
+AP_DECLARE_NONSTD(apr_status_t) ap_old_write_filter(ap_filter_t *f, apr_bucket_brigade *b);
+
+/*
+ * Setting up the protocol fields for subsidiary requests...
+ * Also, a wrapup function to keep the internal accounting straight.
+ */
+void ap_set_sub_req_protocol(request_rec *rnew, const request_rec *r);
+void ap_finalize_sub_req_protocol(request_rec *sub_r);
+
#ifdef __cplusplus
}
#endif
# End Source File
# Begin Source File
+SOURCE=.\server\protocol.c
+# End Source File
+# Begin Source File
+
SOURCE=.\server\rfc1413.c
# End Source File
# Begin Source File
#include "http_main.h"
#include "http_request.h"
+#include "mod_core.h"
+
#define ASIS_MAGIC_TYPE "httpd/send-as-is"
static int asis_handler(request_rec *r)
#include "http_main.h"
#include "util_script.h"
+#include "mod_core.h"
module AP_MODULE_DECLARE_DATA autoindex_module;
#include "mod_suexec.h"
#include "../filters/mod_include.h"
+#include "mod_core.h"
+
+
/* ### should be tossed in favor of APR */
#include <sys/stat.h>
#include <sys/un.h> /* for sockaddr_un */
#endif
-APR_HOOK_STRUCT(
- APR_HOOK_LINK(post_read_request)
- APR_HOOK_LINK(log_transaction)
- APR_HOOK_LINK(http_method)
- APR_HOOK_LINK(default_port)
-)
-
-/*
- * Builds the content-type that should be sent to the client from the
- * content-type specified. The following rules are followed:
- * - if type is NULL, type is set to ap_default_type(r)
- * - if charset adding is disabled, stop processing and return type.
- * - then, if there are no parameters on type, add the default charset
- * - return type
- */
-static const char *make_content_type(request_rec *r, const char *type)
-{
- static const char *needcset[] = {
- "text/plain",
- "text/html",
- NULL };
- const char **pcset;
- core_dir_config *conf =
- (core_dir_config *)ap_get_module_config(r->per_dir_config,
- &core_module);
-
- if (!type) {
- type = ap_default_type(r);
- }
- if (conf->add_default_charset != ADD_DEFAULT_CHARSET_ON) {
- return type;
- }
-
- if (ap_strcasestr(type, "charset=") != NULL) {
- /* already has parameter, do nothing */
- /* XXX we don't check the validity */
- ;
- }
- else {
- /* see if it makes sense to add the charset. At present,
- * we only add it if the Content-type is one of needcset[]
- */
- for (pcset = needcset; *pcset ; pcset++) {
- if (ap_strcasestr(type, *pcset) != NULL) {
- type = apr_pstrcat(r->pool, type, "; charset=",
- conf->add_default_charset_name, NULL);
- break;
- }
- }
- }
- return type;
-}
-
-static int parse_byterange(char *range, apr_off_t clength,
- apr_off_t *start, apr_off_t *end)
-{
- char *dash = strchr(range, '-');
-
- if (!dash)
- return 0;
-
- if ((dash == range)) {
- /* In the form "-5" */
- *start = clength - atol(dash + 1);
- *end = clength - 1;
- }
- else {
- *dash = '\0';
- dash++;
- *start = atol(range);
- if (*dash)
- *end = atol(dash);
- else /* "5-" */
- *end = clength - 1;
- }
-
- if (*start < 0)
- *start = 0;
-
- if (*end >= clength)
- *end = clength - 1;
-
- if (*start > *end)
- return -1;
-
- return (*start > 0 || *end < clength);
-}
-
-static int ap_set_byterange(request_rec *r);
-
-typedef struct byterange_ctx {
- apr_bucket_brigade *bb;
- int num_ranges;
- const char *orig_ct;
-} byterange_ctx;
-
-/*
- * Here we try to be compatible with clients that want multipart/x-byteranges
- * instead of multipart/byteranges (also see above), as per HTTP/1.1. We
- * look for the Request-Range header (e.g. Netscape 2 and 3) as an indication
- * that the browser supports an older protocol. We also check User-Agent
- * for Microsoft Internet Explorer 3, which needs this as well.
- */
-static int use_range_x(request_rec *r)
-{
- const char *ua;
- return (apr_table_get(r->headers_in, "Request-Range") ||
- ((ua = apr_table_get(r->headers_in, "User-Agent"))
- && ap_strstr_c(ua, "MSIE 3")));
-}
-
-#define BYTERANGE_FMT "%" APR_OFF_T_FMT "-%" APR_OFF_T_FMT "/%" APR_OFF_T_FMT
-
-AP_CORE_DECLARE_NONSTD(apr_status_t) ap_byterange_filter(
- ap_filter_t *f,
- apr_bucket_brigade *bb)
-{
-#define MIN_LENGTH(len1, len2) ((len1 > len2) ? len2 : len1)
- request_rec *r = f->r;
- byterange_ctx *ctx = f->ctx;
- apr_bucket *e;
- apr_bucket_brigade *bsend;
- apr_off_t range_start;
- apr_off_t range_end;
- char *current;
- char *bound_head;
- apr_ssize_t bb_length;
- apr_off_t clength = 0;
- apr_status_t rv;
- int found = 0;
-
- if (!ctx) {
- int num_ranges = ap_set_byterange(r);
-
- if (num_ranges == -1) {
- ap_remove_output_filter(f);
- bsend = apr_brigade_create(r->pool);
- e = ap_bucket_error_create(HTTP_RANGE_NOT_SATISFIABLE, NULL, r->pool);
- APR_BRIGADE_INSERT_TAIL(bsend, e);
- e = apr_bucket_eos_create();
- APR_BRIGADE_INSERT_TAIL(bsend, e);
- return ap_pass_brigade(f->next, bsend);
- }
- if (num_ranges == 0) {
- ap_remove_output_filter(f);
- return ap_pass_brigade(f->next, bb);
- }
-
- ctx = f->ctx = apr_pcalloc(r->pool, sizeof(*ctx));
- ctx->num_ranges = num_ranges;
-
- if (num_ranges > 1) {
- ctx->orig_ct = r->content_type;
- r->content_type =
- apr_pstrcat(r->pool, "multipart", use_range_x(r) ? "/x-" : "/",
- "byteranges; boundary=", r->boundary, NULL);
- }
-
- /* create a brigade in case we never call ap_save_brigade() */
- ctx->bb = apr_brigade_create(r->pool);
- }
-
- /* We can't actually deal with byte-ranges until we have the whole brigade
- * because the byte-ranges can be in any order, and according to the RFC,
- * we SHOULD return the data in the same order it was requested.
- */
- if (!APR_BUCKET_IS_EOS(APR_BRIGADE_LAST(bb))) {
- ap_save_brigade(f, &ctx->bb, &bb);
- return APR_SUCCESS;
- }
-
- /* compute this once (it is an invariant) */
- bound_head = apr_pstrcat(r->pool,
- CRLF "--", r->boundary,
- CRLF "Content-type: ",
- make_content_type(r, ctx->orig_ct),
- CRLF "Content-range: bytes ",
- NULL);
- ap_xlate_proto_to_ascii(bound_head, strlen(bound_head));
-
- /* If we have a saved brigade from a previous run, concat the passed
- * brigade with our saved brigade. Otherwise just continue.
- */
- if (ctx->bb) {
- APR_BRIGADE_CONCAT(ctx->bb, bb);
- bb = ctx->bb;
- ctx->bb = NULL; /* ### strictly necessary? call brigade_destroy? */
- }
-
- /* It is possible that we won't have a content length yet, so we have to
- * compute the length before we can actually do the byterange work.
- */
- (void) apr_brigade_length(bb, 1, &bb_length);
- clength = (apr_off_t)bb_length;
-
- /* this brigade holds what we will be sending */
- bsend = apr_brigade_create(r->pool);
-
- while ((current = ap_getword(r->pool, &r->range, ',')) &&
- (rv = parse_byterange(current, clength, &range_start, &range_end))) {
- apr_bucket *e2;
- apr_bucket *ec;
-
- if (rv == -1) {
- continue;
- }
- else {
- found = 1;
- }
-
- if (ctx->num_ranges > 1) {
- char *ts;
-
- e = apr_bucket_pool_create(bound_head,
- strlen(bound_head), r->pool);
- APR_BRIGADE_INSERT_TAIL(bsend, e);
-
- ts = apr_psprintf(r->pool, BYTERANGE_FMT CRLF CRLF,
- range_start, range_end, clength);
- ap_xlate_proto_to_ascii(ts, strlen(ts));
- e = apr_bucket_pool_create(ts, strlen(ts), r->pool);
- APR_BRIGADE_INSERT_TAIL(bsend, e);
- }
-
- e = apr_brigade_partition(bb, range_start);
- e2 = apr_brigade_partition(bb, range_end + 1);
-
- ec = e;
- do {
- apr_bucket *foo;
- const char *str;
- apr_size_t len;
-
- if (apr_bucket_copy(ec, &foo) != APR_SUCCESS) {
- apr_bucket_read(ec, &str, &len, APR_BLOCK_READ);
- foo = apr_bucket_heap_create(str, len, 0, NULL);
- }
- APR_BRIGADE_INSERT_TAIL(bsend, foo);
- ec = APR_BUCKET_NEXT(ec);
- } while (ec != e2);
- }
-
- if (found == 0) {
- ap_remove_output_filter(f);
- r->status = HTTP_OK;
- return HTTP_RANGE_NOT_SATISFIABLE;
- }
-
- if (ctx->num_ranges > 1) {
- char *end;
-
- /* add the final boundary */
- end = apr_pstrcat(r->pool, CRLF "--", r->boundary, "--" CRLF, NULL);
- ap_xlate_proto_to_ascii(end, strlen(end));
- e = apr_bucket_pool_create(end, strlen(end), r->pool);
- APR_BRIGADE_INSERT_TAIL(bsend, e);
- }
-
- e = apr_bucket_eos_create();
- APR_BRIGADE_INSERT_TAIL(bsend, e);
-
- /* we're done with the original content */
- apr_brigade_destroy(bb);
-
- /* send our multipart output */
- return ap_pass_brigade(f->next, bsend);
-}
-
-AP_DECLARE(void) ap_set_content_length(request_rec *r, apr_off_t clength)
-{
- r->clength = clength;
- apr_table_setn(r->headers_out, "Content-Length",
- apr_psprintf(r->pool, "%" APR_OFF_T_FMT, clength));
-}
-
AP_DECLARE(int) ap_set_keepalive(request_rec *r)
{
int ka_sent = 0;
return 0;
}
-/*
- * Return the latest rational time from a request/mtime (modification time)
- * pair. We return the mtime unless it's in the future, in which case we
- * return the current time. We use the request time as a reference in order
- * to limit the number of calls to time(). We don't check for futurosity
- * unless the mtime is at least as new as the reference.
- */
-AP_DECLARE(apr_time_t) ap_rationalize_mtime(request_rec *r, apr_time_t mtime)
-{
- apr_time_t now;
-
- /* For all static responses, it's almost certain that the file was
- * last modified before the beginning of the request. So there's
- * no reason to call time(NULL) again. But if the response has been
- * created on demand, then it might be newer than the time the request
- * started. In this event we really have to call time(NULL) again
- * so that we can give the clients the most accurate Last-Modified. If we
- * were given a time in the future, we return the current time - the
- * Last-Modified can't be in the future.
- */
- now = (mtime < r->request_time) ? r->request_time : apr_time_now();
- return (mtime > now) ? now : mtime;
-}
-
AP_DECLARE(int) ap_meets_conditions(request_rec *r)
{
const char *etag = apr_table_get(r->headers_out, "ETag");
return OK;
}
-/*
- * Construct an entity tag (ETag) from resource information. If it's a real
- * file, build in some of the file characteristics. If the modification time
- * is newer than (request-time minus 1 second), mark the ETag as weak - it
- * could be modified again in as short an interval. We rationalize the
- * modification time we're given to keep it from being in the future.
- */
-AP_DECLARE(char *) ap_make_etag(request_rec *r, int force_weak)
-{
- char *etag;
- char *weak;
-
- /*
- * Make an ETag header out of various pieces of information. We use
- * the last-modified date and, if we have a real file, the
- * length and inode number - note that this doesn't have to match
- * the content-length (i.e. includes), it just has to be unique
- * for the file.
- *
- * If the request was made within a second of the last-modified date,
- * we send a weak tag instead of a strong one, since it could
- * be modified again later in the second, and the validation
- * would be incorrect.
- */
-
- weak = ((r->request_time - r->mtime > APR_USEC_PER_SEC)
- && !force_weak) ? "" : "W/";
-
- if (r->finfo.filetype != 0) {
- etag = apr_psprintf(r->pool,
- "%s\"%lx-%lx-%lx\"", weak,
- (unsigned long) r->finfo.inode,
- (unsigned long) r->finfo.size,
- (unsigned long) r->mtime);
- }
- else {
- etag = apr_psprintf(r->pool, "%s\"%lx\"", weak,
- (unsigned long) r->mtime);
- }
-
- return etag;
-}
-
-AP_DECLARE(void) ap_set_etag(request_rec *r)
-{
- char *etag;
- char *variant_etag, *vlv;
- int vlv_weak;
-
- if (!r->vlist_validator) {
- etag = ap_make_etag(r, 0);
- }
- else {
- /* If we have a variant list validator (vlv) due to the
- * response being negotiated, then we create a structured
- * entity tag which merges the variant etag with the variant
- * list validator (vlv). This merging makes revalidation
- * somewhat safer, ensures that caches which can deal with
- * Vary will (eventually) be updated if the set of variants is
- * changed, and is also a protocol requirement for transparent
- * content negotiation.
- */
-
- /* if the variant list validator is weak, we make the whole
- * structured etag weak. If we would not, then clients could
- * have problems merging range responses if we have different
- * variants with the same non-globally-unique strong etag.
- */
-
- vlv = r->vlist_validator;
- vlv_weak = (vlv[0] == 'W');
-
- variant_etag = ap_make_etag(r, vlv_weak);
-
- /* merge variant_etag and vlv into a structured etag */
-
- variant_etag[strlen(variant_etag) - 1] = '\0';
- if (vlv_weak)
- vlv += 3;
- else
- vlv++;
- etag = apr_pstrcat(r->pool, variant_etag, ";", vlv, NULL);
- }
-
- apr_table_setn(r->headers_out, "ETag", etag);
-}
-
/*
* This function sets the Last-Modified output header field to the value
* of the mtime field in the request structure - rationalized to keep it from
apr_status_t ap_http_filter(ap_filter_t *f, apr_bucket_brigade *b, ap_input_mode_t mode)
{
-#define ASCII_BLANK '\040'
-#define ASCII_CR '\015'
-#define ASCII_LF '\012'
-#define ASCII_TAB '\011'
apr_bucket *e;
char *buff;
apr_size_t len;
e = APR_BRIGADE_FIRST(ctx->b);
}
if (!e || apr_bucket_read(e, &str, &length, APR_NONBLOCK_READ) != APR_SUCCESS) {
- return APR_EOF;
- }
- else {
- const char *c = str;
- while (c - str < length) {
- if (*c == ASCII_LF)
- c++;
- else if (*c == ASCII_CR && *(c + 1) == ASCII_LF)
- c += 2;
- else return APR_SUCCESS;
- }
- apr_bucket_delete(e);
- }
- }
- }
-
- if (APR_BRIGADE_EMPTY(ctx->b)) {
- if ((rv = ap_get_brigade(f->next, ctx->b, mode)) != APR_SUCCESS) {
- return rv;
- }
- }
-
- if (f->c->remain) {
- while (!APR_BRIGADE_EMPTY(ctx->b)) {
- const char *ignore;
-
- e = APR_BRIGADE_FIRST(ctx->b);
- if ((rv = apr_bucket_read(e, &ignore, &len, mode)) != APR_SUCCESS) {
- /* probably APR_IS_EAGAIN(rv); socket state isn't correct;
- * remove log once we get this squared away */
- ap_log_error(APLOG_MARK, APLOG_ERR, rv, f->c->base_server,
- "apr_bucket_read");
- return rv;
- }
-
- if (len) {
- if (f->c->remain < len) {
- apr_bucket_split(e, f->c->remain);
- f->c->remain = 0;
- }
- else {
- f->c->remain -= len;
- }
- APR_BUCKET_REMOVE(e);
- APR_BRIGADE_INSERT_TAIL(b, e);
- break; /* once we've gotten some data, deliver it to caller */
- }
- apr_bucket_delete(e);
- }
- if (f->c->remain == 0) {
- apr_bucket *eos = apr_bucket_eos_create();
-
- APR_BRIGADE_INSERT_TAIL(b, eos);
- }
- return APR_SUCCESS;
- }
-
- while (!APR_BRIGADE_EMPTY(ctx->b)) {
- e = APR_BRIGADE_FIRST(ctx->b);
- if ((rv = apr_bucket_read(e, (const char **)&buff, &len, mode)) != APR_SUCCESS) {
- return rv;
- }
-
- pos = memchr(buff, ASCII_LF, len);
- if (pos != NULL) {
- apr_bucket_split(e, pos - buff + 1);
- APR_BUCKET_REMOVE(e);
- APR_BRIGADE_INSERT_TAIL(b, e);
- return APR_SUCCESS;
- }
- APR_BUCKET_REMOVE(e);
- APR_BRIGADE_INSERT_TAIL(b, e);
- }
- return APR_SUCCESS;
-}
-
-/* Get a line of protocol input, including any continuation lines
- * caused by MIME folding (or broken clients) if fold != 0, and place it
- * in the buffer s, of size n bytes, without the ending newline.
- *
- * Returns -1 on error, or the length of s.
- *
- * Notes: Because the buffer uses 1 char for NUL, the most we can return is
- * (n - 1) actual characters.
- *
- * If no LF is detected on the last line due to a dropped connection
- * or a full buffer, that's considered an error.
- */
-AP_CORE_DECLARE(int) ap_getline(char *s, int n, request_rec *r, int fold)
-{
- char *pos = s;
- char *last_char;
- char *beyond_buff = s + n;
- const char *temp;
- int retval;
- int total = 0;
- int looking_ahead = 0;
- apr_size_t length;
- conn_rec *c = r->connection;
- core_request_config *req_cfg;
- apr_bucket_brigade *b;
- apr_bucket *e;
-
- req_cfg = (core_request_config *)
- ap_get_module_config(r->request_config, &core_module);
- b = req_cfg->bb;
- /* make sure it's empty unless we're folding */
- AP_DEBUG_ASSERT(fold || APR_BRIGADE_EMPTY(b));
-
- while (1) {
- if (APR_BRIGADE_EMPTY(b)) {
- if (ap_get_brigade(c->input_filters, b, AP_MODE_BLOCKING) != APR_SUCCESS ||
- APR_BRIGADE_EMPTY(b)) {
- return -1;
- }
- }
- e = APR_BRIGADE_FIRST(b);
- if (e->length == 0) {
- apr_bucket_delete(e);
- continue;
- }
- retval = apr_bucket_read(e, &temp, &length, APR_BLOCK_READ);
-
- if (retval != APR_SUCCESS) {
- total = ((length < 0) && (total == 0)) ? -1 : total;
- break;
- }
-
- if ((looking_ahead) && (*temp != ASCII_BLANK) && (*temp != ASCII_TAB)) {
- /* can't fold because next line isn't indented,
- * so return what we have. lookahead brigade is
- * stashed on req_cfg->bb
- */
- AP_DEBUG_ASSERT(!APR_BRIGADE_EMPTY(req_cfg->bb));
- break;
- }
- last_char = pos + length - 1;
- if (last_char < beyond_buff) {
- memcpy(pos, temp, length);
- apr_bucket_delete(e);
- }
- else {
- /* input line was larger than the caller's buffer */
- apr_brigade_destroy(b);
-
- /* don't need to worry about req_cfg->bb being bogus.
- * the request is about to die, and ErrorDocument
- * redirects get a new req_cfg->bb
- */
-
- return -1;
- }
-
- pos = last_char; /* Point at the last character */
-
- if (*pos == ASCII_LF) { /* Did we get a full line of input? */
-
- if (pos > s && *(pos - 1) == ASCII_CR) {
- --pos; /* zap optional CR before LF */
- }
-
- /*
- * Trim any extra trailing spaces or tabs except for the first
- * space or tab at the beginning of a blank string. This makes
- * it much easier to check field values for exact matches, and
- * saves memory as well. Terminate string at end of line.
- */
- while (pos > (s + 1) &&
- (*(pos - 1) == ASCII_BLANK || *(pos - 1) == ASCII_TAB)) {
- --pos; /* trim extra trailing spaces or tabs */
- }
- *pos = '\0'; /* zap end of string */
- total = pos - s; /* update total string length */
-
- /* look ahead another line if line folding is desired
- * and this line isn't empty
- */
- if (fold && total) {
- looking_ahead = 1;
- }
- else {
- AP_DEBUG_ASSERT(APR_BRIGADE_EMPTY(req_cfg->bb));
- break;
- }
- }
- else {
- /* no LF yet...character mode client (telnet)...keep going
- * bump past last character read,
- * and set total in case we bail before finding a LF
- */
- total = ++pos - s;
- looking_ahead = 0; /* only appropriate right after LF */
- }
- }
- ap_xlate_proto_from_ascii(s, total);
- return total;
-}
-
-/* parse_uri: break apart the uri
- * Side Effects:
- * - sets r->args to rest after '?' (or NULL if no '?')
- * - sets r->uri to request uri (without r->args part)
- * - sets r->hostname (if not set already) from request (scheme://host:port)
- */
-AP_CORE_DECLARE(void) ap_parse_uri(request_rec *r, const char *uri)
-{
- int status = HTTP_OK;
-
- r->unparsed_uri = apr_pstrdup(r->pool, uri);
-
- if (r->method_number == M_CONNECT) {
- status = ap_parse_hostinfo_components(r->pool, uri, &r->parsed_uri);
- }
- else {
- /* Simple syntax Errors in URLs are trapped by parse_uri_components(). */
- status = ap_parse_uri_components(r->pool, uri, &r->parsed_uri);
- }
-
- if (ap_is_HTTP_SUCCESS(status)) {
- /* if it has a scheme we may need to do absoluteURI vhost stuff */
- if (r->parsed_uri.scheme
- && !strcasecmp(r->parsed_uri.scheme, ap_http_method(r))) {
- r->hostname = r->parsed_uri.hostname;
- }
- else if (r->method_number == M_CONNECT) {
- r->hostname = r->parsed_uri.hostname;
- }
- r->args = r->parsed_uri.query;
- r->uri = r->parsed_uri.path ? r->parsed_uri.path
- : apr_pstrdup(r->pool, "/");
-#if defined(OS2) || defined(WIN32)
- /* Handle path translations for OS/2 and plug security hole.
- * This will prevent "http://www.wherever.com/..\..\/" from
- * returning a directory for the root drive.
- */
- {
- char *x;
-
- for (x = r->uri; (x = strchr(x, '\\')) != NULL; )
- *x = '/';
- }
-#endif /* OS2 || WIN32 */
- }
- else {
- r->args = NULL;
- r->hostname = NULL;
- r->status = status; /* set error status */
- r->uri = apr_pstrdup(r->pool, uri);
- }
-}
-
-static int read_request_line(request_rec *r)
-{
- char l[DEFAULT_LIMIT_REQUEST_LINE + 2]; /* getline's two extra for \n\0 */
- const char *ll = l;
- const char *uri;
-#if 0
- conn_rec *conn = r->connection;
-#endif
- int major = 1, minor = 0; /* Assume HTTP/1.0 if non-"HTTP" protocol */
- int len;
-
- /* Read past empty lines until we get a real request line,
- * a read error, the connection closes (EOF), or we timeout.
- *
- * We skip empty lines because browsers have to tack a CRLF on to the end
- * of POSTs to support old CERN webservers. But note that we may not
- * have flushed any previous response completely to the client yet.
- * We delay the flush as long as possible so that we can improve
- * performance for clients that are pipelining requests. If a request
- * is pipelined then we won't block during the (implicit) read() below.
- * If the requests aren't pipelined, then the client is still waiting
- * for the final buffer flush from us, and we will block in the implicit
- * read(). B_SAFEREAD ensures that the BUFF layer flushes if it will
- * have to block during a read.
- */
-
- while ((len = ap_getline(l, sizeof(l), r, 0)) <= 0) {
- if (len < 0) { /* includes EOF */
- /* this is a hack to make sure that request time is set,
- * it's not perfect, but it's better than nothing
- */
- r->request_time = apr_time_now();
- return 0;
- }
- }
- /* we've probably got something to do, ignore graceful restart requests */
-
- /* XXX - sigwait doesn't work if the signal has been SIG_IGNed (under
- * linux 2.0 w/ glibc 2.0, anyway), and this step isn't necessary when
- * we're running a sigwait thread anyway. If/when unthreaded mode is
- * put back in, we should make sure to ignore this signal iff a sigwait
- * thread isn't used. - mvsk
-
-#ifdef SIGWINCH
- apr_signal(SIGWINCH, SIG_IGN);
-#endif
- */
-
- r->request_time = apr_time_now();
- r->the_request = apr_pstrdup(r->pool, l);
- r->method = ap_getword_white(r->pool, &ll);
-
-#if 0
-/* XXX If we want to keep track of the Method, the protocol module should do
- * it. That support isn't in the scoreboard yet. Hopefully next week
- * sometime. rbb */
- ap_update_connection_status(AP_CHILD_THREAD_FROM_ID(conn->id), "Method", r->method);
-#endif
- uri = ap_getword_white(r->pool, &ll);
-
- /* Provide quick information about the request method as soon as known */
-
- r->method_number = ap_method_number_of(r->method);
- if (r->method_number == M_GET && r->method[0] == 'H') {
- r->header_only = 1;
- }
-
- ap_parse_uri(r, uri);
-
- /* ap_getline returns (size of max buffer - 1) if it fills up the
- * buffer before finding the end-of-line. This is only going to
- * happen if it exceeds the configured limit for a request-line.
- */
- if (len > r->server->limit_req_line) {
- r->status = HTTP_REQUEST_URI_TOO_LARGE;
- r->proto_num = HTTP_VERSION(1,0);
- r->protocol = apr_pstrdup(r->pool, "HTTP/1.0");
- return 0;
- }
-
- r->assbackwards = (ll[0] == '\0');
- r->protocol = apr_pstrdup(r->pool, ll[0] ? ll : "HTTP/0.9");
-/* XXX If we want to keep track of the Method, the protocol module should do
- * it. That support isn't in the scoreboard yet. Hopefully next week
- * sometime. rbb
- ap_update_connection_status(conn->id, "Protocol", r->protocol);
- */
-
- if (2 == sscanf(r->protocol, "HTTP/%u.%u", &major, &minor)
- && minor < HTTP_VERSION(1,0)) /* don't allow HTTP/0.1000 */
- r->proto_num = HTTP_VERSION(major, minor);
- else
- r->proto_num = HTTP_VERSION(1,0);
-
- return 1;
-}
-
-static void get_mime_headers(request_rec *r)
-{
- char field[DEFAULT_LIMIT_REQUEST_FIELDSIZE + 2]; /* getline's two extra */
- char *value;
- char *copy;
- int len;
- int fields_read = 0;
- apr_table_t *tmp_headers;
-
- /* We'll use apr_table_overlap later to merge these into r->headers_in. */
- tmp_headers = apr_table_make(r->pool, 50);
-
- /*
- * Read header lines until we get the empty separator line, a read error,
- * the connection closes (EOF), reach the server limit, or we timeout.
- */
- while ((len = ap_getline(field, sizeof(field), r, 1)) > 0) {
-
- if (r->server->limit_req_fields &&
- (++fields_read > r->server->limit_req_fields)) {
- r->status = HTTP_BAD_REQUEST;
- apr_table_setn(r->notes, "error-notes",
- "The number of request header fields exceeds "
- "this server's limit.<P>\n");
- return;
- }
- /* ap_getline returns (size of max buffer - 1) if it fills up the
- * buffer before finding the end-of-line. This is only going to
- * happen if it exceeds the configured limit for a field size.
- */
- if (len > r->server->limit_req_fieldsize) {
- r->status = HTTP_BAD_REQUEST;
- apr_table_setn(r->notes, "error-notes",
- apr_pstrcat(r->pool,
- "Size of a request header field "
- "exceeds server limit.<P>\n"
- "<PRE>\n",
- ap_escape_html(r->pool, field),
- "</PRE>\n", NULL));
- return;
- }
- copy = apr_palloc(r->pool, len + 1);
- memcpy(copy, field, len + 1);
-
- if (!(value = strchr(copy, ':'))) { /* Find the colon separator */
- r->status = HTTP_BAD_REQUEST; /* or abort the bad request */
- apr_table_setn(r->notes, "error-notes",
- apr_pstrcat(r->pool,
- "Request header field is missing "
- "colon separator.<P>\n"
- "<PRE>\n",
- ap_escape_html(r->pool, copy),
- "</PRE>\n", NULL));
- return;
- }
-
- *value = '\0';
- ++value;
- while (*value == ' ' || *value == '\t') {
- ++value; /* Skip to start of value */
- }
-
- apr_table_addn(tmp_headers, copy, value);
- }
-
- apr_table_overlap(r->headers_in, tmp_headers, APR_OVERLAP_TABLES_MERGE);
-}
-
-request_rec *ap_read_request(conn_rec *conn)
-{
- request_rec *r;
- apr_pool_t *p;
- const char *expect;
- int access_status;
- core_request_config *req_cfg;
-
- apr_pool_create(&p, conn->pool);
- r = apr_pcalloc(p, sizeof(request_rec));
- r->pool = p;
- r->connection = conn;
- r->server = conn->base_server;
-
- conn->keptalive = conn->keepalive == 1;
- conn->keepalive = 0;
-
- r->user = NULL;
- r->ap_auth_type = NULL;
-
- r->allowed_methods = ap_make_method_list(p, 2);
-
- r->headers_in = apr_table_make(r->pool, 50);
- r->subprocess_env = apr_table_make(r->pool, 50);
- r->headers_out = apr_table_make(r->pool, 12);
- r->err_headers_out = apr_table_make(r->pool, 5);
- r->notes = apr_table_make(r->pool, 5);
-
- r->request_config = ap_create_request_config(r->pool);
- req_cfg = apr_pcalloc(r->pool, sizeof(core_request_config));
- req_cfg->bb = apr_brigade_create(r->pool);
- ap_set_module_config(r->request_config, &core_module, req_cfg);
-
- r->per_dir_config = r->server->lookup_defaults;
-
- r->sent_bodyct = 0; /* bytect isn't for body */
-
- r->read_length = 0;
- r->read_body = REQUEST_NO_BODY;
-
- r->status = HTTP_REQUEST_TIME_OUT; /* Until we get a request */
- r->the_request = NULL;
- r->output_filters = conn->output_filters;
- r->input_filters = conn->input_filters;
-
- apr_setsocketopt(conn->client_socket, APR_SO_TIMEOUT,
- (int)(conn->keptalive
- ? r->server->keep_alive_timeout * APR_USEC_PER_SEC
- : r->server->timeout * APR_USEC_PER_SEC));
-
- ap_add_output_filter("BYTERANGE", NULL, r, r->connection);
- ap_add_output_filter("CONTENT_LENGTH", NULL, r, r->connection);
- ap_add_output_filter("HTTP_HEADER", NULL, r, r->connection);
-
- /* Get the request... */
- if (!read_request_line(r)) {
- if (r->status == HTTP_REQUEST_URI_TOO_LARGE) {
- ap_log_rerror(APLOG_MARK, APLOG_NOERRNO|APLOG_ERR, 0, r,
- "request failed: URI too long");
- ap_send_error_response(r, 0);
- ap_run_log_transaction(r);
- return r;
- }
- return NULL;
- }
- if (r->connection->keptalive) {
- apr_setsocketopt(r->connection->client_socket, APR_SO_TIMEOUT,
- (int)(r->server->timeout * APR_USEC_PER_SEC));
- }
- if (!r->assbackwards) {
- get_mime_headers(r);
- if (r->status != HTTP_REQUEST_TIME_OUT) {
- ap_log_rerror(APLOG_MARK, APLOG_NOERRNO|APLOG_ERR, 0, r,
- "request failed: error reading the headers");
- ap_send_error_response(r, 0);
- ap_run_log_transaction(r);
- return r;
- }
- }
- else {
- if (r->header_only) {
- /*
- * Client asked for headers only with HTTP/0.9, which doesn't send
- * headers! Have to dink things just to make sure the error message
- * comes through...
- */
- ap_log_rerror(APLOG_MARK, APLOG_NOERRNO|APLOG_ERR, 0, r,
- "client sent invalid HTTP/0.9 request: HEAD %s",
- r->uri);
- r->header_only = 0;
- r->status = HTTP_BAD_REQUEST;
- ap_send_error_response(r, 0);
- ap_run_log_transaction(r);
- return r;
- }
- }
-
- r->status = HTTP_OK; /* Until further notice. */
-
- /* update what we think the virtual host is based on the headers we've
- * now read. may update status.
- */
- ap_update_vhost_from_headers(r);
-
- /* we may have switched to another server */
- r->per_dir_config = r->server->lookup_defaults;
-
- conn->keptalive = 0; /* We now have a request to play with */
-
- if ((!r->hostname && (r->proto_num >= HTTP_VERSION(1,1))) ||
- ((r->proto_num == HTTP_VERSION(1,1)) &&
- !apr_table_get(r->headers_in, "Host"))) {
- /*
- * Client sent us an HTTP/1.1 or later request without telling us the
- * hostname, either with a full URL or a Host: header. We therefore
- * need to (as per the 1.1 spec) send an error. As a special case,
- * HTTP/1.1 mentions twice (S9, S14.23) that a request MUST contain
- * a Host: header, and the server MUST respond with 400 if it doesn't.
- */
- r->status = HTTP_BAD_REQUEST;
- ap_log_rerror(APLOG_MARK, APLOG_NOERRNO|APLOG_ERR, 0, r,
- "client sent HTTP/1.1 request without hostname "
- "(see RFC2616 section 14.23): %s", r->uri);
- }
- if (r->status != HTTP_OK) {
- ap_send_error_response(r, 0);
- ap_run_log_transaction(r);
- return r;
- }
- if (((expect = apr_table_get(r->headers_in, "Expect")) != NULL) &&
- (expect[0] != '\0')) {
- /*
- * The Expect header field was added to HTTP/1.1 after RFC 2068
- * as a means to signal when a 100 response is desired and,
- * unfortunately, to signal a poor man's mandatory extension that
- * the server must understand or return 417 Expectation Failed.
- */
- if (strcasecmp(expect, "100-continue") == 0) {
- r->expecting_100 = 1;
- }
- else {
- r->status = HTTP_EXPECTATION_FAILED;
- ap_log_rerror(APLOG_MARK, APLOG_NOERRNO|APLOG_INFO, 0, r,
- "client sent an unrecognized expectation value of "
- "Expect: %s", expect);
- ap_send_error_response(r, 0);
- (void) ap_discard_request_body(r);
- ap_run_log_transaction(r);
- return r;
- }
- }
-
- if ((access_status = ap_run_post_read_request(r))) {
- ap_die(access_status, r);
- ap_run_log_transaction(r);
- return NULL;
- }
-
- return r;
-}
-
-/*
- * A couple of other functions which initialize some of the fields of
- * a request structure, as appropriate for adjuncts of one kind or another
- * to a request in progress. Best here, rather than elsewhere, since
- * *someone* has to set the protocol-specific fields...
- */
-
-void ap_set_sub_req_protocol(request_rec *rnew, const request_rec *r)
-{
- rnew->the_request = r->the_request; /* Keep original request-line */
-
- rnew->assbackwards = 1; /* Don't send headers from this. */
- rnew->no_local_copy = 1; /* Don't try to send HTTP_NOT_MODIFIED for a
- * fragment. */
- rnew->method = "GET";
- rnew->method_number = M_GET;
- rnew->protocol = "INCLUDED";
-
- rnew->status = HTTP_OK;
-
- rnew->headers_in = r->headers_in;
- rnew->subprocess_env = apr_table_copy(rnew->pool, r->subprocess_env);
- rnew->headers_out = apr_table_make(rnew->pool, 5);
- rnew->err_headers_out = apr_table_make(rnew->pool, 5);
- rnew->notes = apr_table_make(rnew->pool, 5);
-
- rnew->expecting_100 = r->expecting_100;
- rnew->read_length = r->read_length;
- rnew->read_body = REQUEST_NO_BODY;
-
- rnew->main = (request_rec *) r;
-}
-
-static void end_output_stream(request_rec *r)
-{
- apr_bucket_brigade *bb;
- apr_bucket *b;
-
- bb = apr_brigade_create(r->pool);
- b = apr_bucket_eos_create();
- APR_BRIGADE_INSERT_TAIL(bb, b);
- ap_pass_brigade(r->output_filters, bb);
-}
-
-void ap_finalize_sub_req_protocol(request_rec *sub)
-{
- end_output_stream(sub);
-}
-
-/*
- * Support for the Basic authentication protocol, and a bit for Digest.
- */
-
-AP_DECLARE(void) ap_note_auth_failure(request_rec *r)
-{
- if (!strcasecmp(ap_auth_type(r), "Basic"))
- ap_note_basic_auth_failure(r);
- else if (!strcasecmp(ap_auth_type(r), "Digest"))
- ap_note_digest_auth_failure(r);
-}
-
-AP_DECLARE(void) ap_note_basic_auth_failure(request_rec *r)
-{
- if (strcasecmp(ap_auth_type(r), "Basic"))
- ap_note_auth_failure(r);
- else
- apr_table_setn(r->err_headers_out,
- r->proxyreq ? "Proxy-Authenticate" : "WWW-Authenticate",
- apr_pstrcat(r->pool, "Basic realm=\"", ap_auth_name(r), "\"",
- NULL));
-}
-
-AP_DECLARE(void) ap_note_digest_auth_failure(request_rec *r)
-{
- apr_table_setn(r->err_headers_out,
- r->proxyreq ? "Proxy-Authenticate" : "WWW-Authenticate",
- apr_psprintf(r->pool, "Digest realm=\"%s\", nonce=\"%llx\"",
- ap_auth_name(r), r->request_time));
-}
-
-AP_DECLARE(int) ap_get_basic_auth_pw(request_rec *r, const char **pw)
-{
- const char *auth_line = apr_table_get(r->headers_in,
- r->proxyreq ? "Proxy-Authorization"
- : "Authorization");
- const char *t;
-
- if (!(t = ap_auth_type(r)) || strcasecmp(t, "Basic"))
- return DECLINED;
-
- if (!ap_auth_name(r)) {
- ap_log_rerror(APLOG_MARK, APLOG_NOERRNO|APLOG_ERR,
- 0, r, "need AuthName: %s", r->uri);
- return HTTP_INTERNAL_SERVER_ERROR;
+ return APR_EOF;
+ }
+ else {
+ const char *c = str;
+ while (c - str < length) {
+ if (*c == APR_ASCII_LF)
+ c++;
+ else if (*c == APR_ASCII_CR && *(c + 1) == APR_ASCII_LF)
+ c += 2;
+ else return APR_SUCCESS;
+ }
+ apr_bucket_delete(e);
+ }
+ }
}
- if (!auth_line) {
- ap_note_basic_auth_failure(r);
- return HTTP_UNAUTHORIZED;
+ if (APR_BRIGADE_EMPTY(ctx->b)) {
+ if ((rv = ap_get_brigade(f->next, ctx->b, mode)) != APR_SUCCESS) {
+ return rv;
+ }
}
- if (strcasecmp(ap_getword(r->pool, &auth_line, ' '), "Basic")) {
- /* Client tried to authenticate using wrong auth scheme */
- ap_log_rerror(APLOG_MARK, APLOG_NOERRNO|APLOG_ERR, 0, r,
- "client used wrong authentication scheme: %s", r->uri);
- ap_note_basic_auth_failure(r);
- return HTTP_UNAUTHORIZED;
- }
+ if (f->c->remain) {
+ while (!APR_BRIGADE_EMPTY(ctx->b)) {
+ const char *ignore;
- while (*auth_line== ' ' || *auth_line== '\t') {
- auth_line++;
- }
+ e = APR_BRIGADE_FIRST(ctx->b);
+ if ((rv = apr_bucket_read(e, &ignore, &len, mode)) != APR_SUCCESS) {
+ /* probably APR_IS_EAGAIN(rv); socket state isn't correct;
+ * remove log once we get this squared away */
+ ap_log_error(APLOG_MARK, APLOG_ERR, rv, f->c->base_server,
+ "apr_bucket_read");
+ return rv;
+ }
- t = ap_pbase64decode(r->pool, auth_line);
- /* Note that this allocation has to be made from r->connection->pool
- * because it has the lifetime of the connection. The other allocations
- * are temporary and can be tossed away any time.
- */
- r->user = ap_getword_nulls (r->pool, &t, ':');
- r->ap_auth_type = "Basic";
+ if (len) {
+ if (f->c->remain < len) {
+ apr_bucket_split(e, f->c->remain);
+ f->c->remain = 0;
+ }
+ else {
+ f->c->remain -= len;
+ }
+ APR_BUCKET_REMOVE(e);
+ APR_BRIGADE_INSERT_TAIL(b, e);
+ break; /* once we've gotten some data, deliver it to caller */
+ }
+ apr_bucket_delete(e);
+ }
+ if (f->c->remain == 0) {
+ apr_bucket *eos = apr_bucket_eos_create();
+
+ APR_BRIGADE_INSERT_TAIL(b, eos);
+ }
+ return APR_SUCCESS;
+ }
- *pw = t;
+ while (!APR_BRIGADE_EMPTY(ctx->b)) {
+ e = APR_BRIGADE_FIRST(ctx->b);
+ if ((rv = apr_bucket_read(e, (const char **)&buff, &len, mode)) != APR_SUCCESS) {
+ return rv;
+ }
- return OK;
+ pos = memchr(buff, APR_ASCII_LF, len);
+ if (pos != NULL) {
+ apr_bucket_split(e, pos - buff + 1);
+ APR_BUCKET_REMOVE(e);
+ APR_BRIGADE_INSERT_TAIL(b, e);
+ return APR_SUCCESS;
+ }
+ APR_BUCKET_REMOVE(e);
+ APR_BRIGADE_INSERT_TAIL(b, e);
+ }
+ return APR_SUCCESS;
}
/* New Apache routine to map status codes into array indicies
{
}
-struct content_length_ctx {
- apr_bucket_brigade *saved;
- int compute_len;
- apr_size_t curr_len;
-};
-
-/* This filter computes the content length, but it also computes the number
- * of bytes sent to the client. This means that this filter will always run
- * through all of the buckets in all brigades
- */
-AP_CORE_DECLARE_NONSTD(apr_status_t) ap_content_length_filter(ap_filter_t *f,
- apr_bucket_brigade *b)
-{
- request_rec *r = f->r;
- struct content_length_ctx *ctx;
- apr_status_t rv;
- apr_bucket *e;
- int send_it = 0;
-
- ctx = f->ctx;
- if (!ctx) { /* first time through */
- f->ctx = ctx = apr_pcalloc(r->pool, sizeof(struct content_length_ctx));
- }
-
- APR_BRIGADE_FOREACH(e, b) {
- const char *ignored;
- apr_size_t length;
-
- if (APR_BUCKET_IS_EOS(e) || APR_BUCKET_IS_FLUSH(e)) {
- send_it = 1;
- }
- if (e->length == -1) { /* if length unknown */
- rv = apr_bucket_read(e, &ignored, &length, APR_BLOCK_READ);
- if (rv != APR_SUCCESS) {
- return rv;
- }
- }
- else {
- length = e->length;
- }
- ctx->curr_len += length;
- r->bytes_sent += length;
- }
-
- if ((ctx->curr_len < AP_MIN_BYTES_TO_WRITE) && !send_it) {
- return ap_save_brigade(f, &ctx->saved, &b);
- }
-
- /* We will compute a content length if:
- * We already have all the data
- * This is a bit confusing, because we will always buffer up
- * to AP_MIN_BYTES_TO_WRITE, so if we get all the data while
- * we are buffering that much data, we set the c-l.
- * or We are in a 1.1 request and we can't chunk
- * or This is a keepalive connection
- * We may want to change this later to just close the connection
- */
- if ((r->proto_num == HTTP_VERSION(1,1)
- && !ap_find_last_token(f->r->pool,
- apr_table_get(r->headers_out,
- "Transfer-Encoding"),
- "chunked"))
- || (f->r->connection->keepalive)
- || (APR_BUCKET_IS_EOS(APR_BRIGADE_LAST(b)))) {
- ctx->compute_len = 1;
- }
- else {
- ctx->compute_len = 0;
- }
-
- if (ctx->compute_len) {
- /* save the brigade; we can't pass any data to the next
- * filter until we have the entire content length
- */
- if (!send_it) {
- ap_save_brigade(f, &ctx->saved, &b);
- return APR_SUCCESS;
- }
- ap_set_content_length(r, r->bytes_sent);
- }
- if (ctx->saved) {
- APR_BRIGADE_CONCAT(ctx->saved, b);
- apr_brigade_destroy(b);
- b = ctx->saved;
- ctx->saved = NULL;
- }
-
- ctx->curr_len = 0;
- return ap_pass_brigade(f->next, b);
-}
-
-static int ap_set_byterange(request_rec *r)
-{
- const char *range;
- const char *if_range;
- const char *match;
- const char *ct;
- apr_off_t range_start;
- apr_off_t range_end;
- int num_ranges;
-
- if (r->assbackwards)
- return 0;
-
- /* Check for Range request-header (HTTP/1.1) or Request-Range for
- * backwards-compatibility with second-draft Luotonen/Franks
- * byte-ranges (e.g. Netscape Navigator 2-3).
- *
- * We support this form, with Request-Range, and (farther down) we
- * send multipart/x-byteranges instead of multipart/byteranges for
- * Request-Range based requests to work around a bug in Netscape
- * Navigator 2-3 and MSIE 3.
- */
-
- if (!(range = apr_table_get(r->headers_in, "Range")))
- range = apr_table_get(r->headers_in, "Request-Range");
-
- if (!range || strncasecmp(range, "bytes=", 6)) {
- return 0;
- }
-
- /* Check the If-Range header for Etag or Date.
- * Note that this check will return false (as required) if either
- * of the two etags are weak.
- */
- if ((if_range = apr_table_get(r->headers_in, "If-Range"))) {
- if (if_range[0] == '"') {
- if (!(match = apr_table_get(r->headers_out, "Etag")) ||
- (strcmp(if_range, match) != 0))
- return 0;
- }
- else if (!(match = apr_table_get(r->headers_out, "Last-Modified")) ||
- (strcmp(if_range, match) != 0))
- return 0;
- }
-
- /* would be nice to pick this up from f->ctx */
- ct = make_content_type(r, r->content_type);
-
- if (!ap_strchr_c(range, ',')) {
- int rv;
- /* A single range */
-
- /* rvarse_byterange() modifies the contents, so make a copy */
- if ((rv = parse_byterange(apr_pstrdup(r->pool, range + 6), r->clength,
- &range_start, &range_end)) <= 0) {
- return rv;
- }
- apr_table_setn(r->headers_out, "Content-Range",
- apr_psprintf(r->pool, "bytes " BYTERANGE_FMT,
- range_start, range_end, r->clength));
- apr_table_setn(r->headers_out, "Content-Type", ct);
-
- num_ranges = 1;
- }
- else {
- /* a multiple range */
-
- num_ranges = 2;
-
- /* ### it would be nice if r->boundary was in f->ctx */
- r->boundary = apr_psprintf(r->pool, "%qx%lx",
- r->request_time, (long) getpid());
-
- apr_table_setn(r->headers_out, "Content-Type",
- apr_pstrcat(r->pool,
- "multipart", use_range_x(r) ? "/x-" : "/",
- "byteranges; boundary=", r->boundary,
- NULL));
- }
-
- r->status = HTTP_PARTIAL_CONTENT;
- r->range = range + 6;
-
- return num_ranges;
-}
-
typedef struct header_filter_cts {
int headers_sent;
} header_filter_ctx;
}
- apr_table_setn(r->headers_out, "Content-Type", make_content_type(r,
+ apr_table_setn(r->headers_out, "Content-Type", ap_make_content_type(r,
r->content_type));
if (r->content_encoding) {
return ap_pass_brigade(f->next, b);
}
-/* finalize_request_protocol is called at completion of sending the
- * response. Its sole purpose is to send the terminating protocol
- * information for any wrappers around the response message body
- * (i.e., transfer encodings). It should have been named finalize_response.
- */
-AP_DECLARE(void) ap_finalize_request_protocol(request_rec *r)
-{
- while (r->next) {
- r = r->next;
- }
- /* tell the filter chain there is no more content coming */
- if (!r->eos_sent) {
- end_output_stream(r);
- }
-}
-
/* Here we deal with getting the request message body from the client.
* Whether or not the request contains a body is signaled by the presence
* of a non-zero Content-Length or by a Transfer-Encoding: chunked.
return OK;
}
-/*
- * Send the body of a response to the client.
- */
-AP_DECLARE(apr_status_t) ap_send_fd(apr_file_t *fd, request_rec *r, apr_off_t offset,
- apr_size_t len, apr_size_t *nbytes)
-{
- apr_bucket_brigade *bb = NULL;
- apr_bucket *b;
- apr_status_t rv;
-
- bb = apr_brigade_create(r->pool);
- b = apr_bucket_file_create(fd, offset, len);
- APR_BRIGADE_INSERT_TAIL(bb, b);
-
- rv = ap_pass_brigade(r->output_filters, bb);
- if (rv != APR_SUCCESS) {
- *nbytes = 0; /* no way to tell how many were actually sent */
- }
- else {
- *nbytes = len;
- }
-
- return rv;
-}
-
-#if APR_HAS_MMAP
-/* send data from an in-memory buffer */
-AP_DECLARE(size_t) ap_send_mmap(apr_mmap_t *mm, request_rec *r, size_t offset,
- size_t length)
-{
- apr_bucket_brigade *bb = NULL;
- apr_bucket *b;
-
- bb = apr_brigade_create(r->pool);
- b = apr_bucket_mmap_create(mm, offset, length);
- APR_BRIGADE_INSERT_TAIL(bb, b);
- ap_pass_brigade(r->output_filters, bb);
-
- return mm->size; /* XXX - change API to report apr_status_t? */
-}
-#endif /* APR_HAS_MMAP */
-
-typedef struct {
- char *buf;
- char *cur;
- apr_size_t avail;
-} old_write_filter_ctx;
-
-AP_CORE_DECLARE_NONSTD(apr_status_t) ap_old_write_filter(
- ap_filter_t *f, apr_bucket_brigade *bb)
-{
- old_write_filter_ctx *ctx = f->ctx;
-
- AP_DEBUG_ASSERT(ctx);
-
- if (ctx->buf != NULL) {
- apr_size_t nbyte = ctx->cur - ctx->buf;
-
- if (nbyte != 0) {
- /* whatever is coming down the pipe (we don't care), we
- can simply insert our buffered data at the front and
- pass the whole bundle down the chain. */
- apr_bucket *b = apr_bucket_heap_create(ctx->buf, nbyte, 0, NULL);
- APR_BRIGADE_INSERT_HEAD(bb, b);
- ctx->buf = NULL;
- }
- }
-
- return ap_pass_brigade(f->next, bb);
-}
-
-static apr_status_t flush_buffer(request_rec *r, old_write_filter_ctx *ctx,
- const char *extra, apr_size_t extra_len)
-{
- apr_bucket_brigade *bb = apr_brigade_create(r->pool);
- apr_size_t nbyte = ctx->cur - ctx->buf;
- apr_bucket *b = apr_bucket_heap_create(ctx->buf, nbyte, 0, NULL);
-
- APR_BRIGADE_INSERT_TAIL(bb, b);
- ctx->buf = NULL;
-
- /* if there is extra data, then send that, too */
- if (extra != NULL) {
- b = apr_bucket_transient_create(extra, extra_len);
- APR_BRIGADE_INSERT_TAIL(bb, b);
- }
-
- return ap_pass_brigade(r->output_filters, bb);
-}
-
-static apr_status_t buffer_output(request_rec *r,
- const char *str, apr_size_t len)
-{
- ap_filter_t *f;
- old_write_filter_ctx *ctx;
- apr_size_t amt;
- apr_status_t status;
-
- if (len == 0)
- return APR_SUCCESS;
-
- /* ### future optimization: record some flags in the request_rec to
- ### say whether we've added our filter, and whether it is first. */
-
- /* this will typically exit on the first test */
- for (f = r->output_filters; f != NULL; f = f->next)
- if (strcmp("OLD_WRITE", f->frec->name) == 0)
- break;
- if (f == NULL) {
- /* our filter hasn't been added yet */
- ctx = apr_pcalloc(r->pool, sizeof(*ctx));
- ap_add_output_filter("OLD_WRITE", ctx, r, r->connection);
- }
-
- /* if the first filter is not our buffering filter, then we have to
- deliver the content through the normal filter chain */
- if (strcmp("OLD_WRITE", r->output_filters->frec->name) != 0) {
- apr_bucket_brigade *bb = apr_brigade_create(r->pool);
- apr_bucket *b = apr_bucket_transient_create(str, len);
- APR_BRIGADE_INSERT_TAIL(bb, b);
-
- return ap_pass_brigade(r->output_filters, bb);
- }
-
- /* grab the context from our filter */
- ctx = r->output_filters->ctx;
-
- /* if there isn't a buffer in the context yet, put one there. */
- if (ctx->buf == NULL) {
- /* use the heap so it will get free'd after being flushed */
- ctx->avail = AP_MIN_BYTES_TO_WRITE;
- ctx->buf = ctx->cur = malloc(ctx->avail);
- }
-
- /* squeeze the data into the existing buffer */
- if (len <= ctx->avail) {
- memcpy(ctx->cur, str, len);
- ctx->cur += len;
- if ((ctx->avail -= len) == 0)
- return flush_buffer(r, ctx, NULL, 0);
- return APR_SUCCESS;
- }
-
- /* the new content can't fit in the existing buffer */
-
- if (len >= AP_MIN_BYTES_TO_WRITE) {
- /* it is really big. send what we have, and the new stuff. */
- return flush_buffer(r, ctx, str, len);
- }
-
- /* the new data is small. put some into the current buffer, flush it,
- and then drop the remaining into a new buffer. */
- amt = ctx->avail;
- memcpy(ctx->cur, str, amt);
- ctx->cur += amt;
- ctx->avail = 0;
- if ((status = flush_buffer(r, ctx, NULL, 0)) != APR_SUCCESS)
- return status;
-
- ctx->buf = malloc(AP_MIN_BYTES_TO_WRITE);
- memcpy(ctx->buf, str + amt, len - amt);
- ctx->cur = ctx->buf + (len - amt);
- ctx->avail = AP_MIN_BYTES_TO_WRITE - (len - amt);
-
- return APR_SUCCESS;
-}
-
-AP_DECLARE(int) ap_rputc(int c, request_rec *r)
-{
- char c2 = (char)c;
-
- if (r->connection->aborted) {
- return -1;
- }
-
- if (buffer_output(r, &c2, 1) != APR_SUCCESS)
- return -1;
-
- return c;
-}
-
-AP_DECLARE(int) ap_rputs(const char *str, request_rec *r)
-{
- apr_size_t len;
-
- if (r->connection->aborted)
- return -1;
-
- if (buffer_output(r, str, len = strlen(str)) != APR_SUCCESS)
- return -1;
-
- return len;
-}
-
-AP_DECLARE(int) ap_rwrite(const void *buf, int nbyte, request_rec *r)
-{
- if (r->connection->aborted)
- return -1;
-
- if (buffer_output(r, buf, nbyte) != APR_SUCCESS)
- return -1;
-
- return nbyte;
-}
-
-AP_DECLARE(int) ap_vrprintf(request_rec *r, const char *fmt, va_list va)
-{
- char buf[4096];
- apr_size_t written;
-
- if (r->connection->aborted)
- return -1;
-
- /* ### fix this mechanism to allow more than 4K of output */
- written = apr_vsnprintf(buf, sizeof(buf), fmt, va);
- if (buffer_output(r, buf, written) != APR_SUCCESS)
- return -1;
-
- return written;
-}
-
-AP_DECLARE_NONSTD(int) ap_rprintf(request_rec *r, const char *fmt, ...)
-{
- va_list va;
- int n;
-
- if (r->connection->aborted)
- return -1;
-
- va_start(va, fmt);
- n = ap_vrprintf(r, fmt, va);
- va_end(va);
-
- return n;
-}
-
-AP_DECLARE_NONSTD(int) ap_rvputs(request_rec *r, ...)
-{
- va_list va;
- const char *s;
- apr_size_t len;
- apr_size_t written = 0;
-
- if (r->connection->aborted)
- return -1;
-
- /* ### TODO: if the total output is large, put all the strings
- ### into a single brigade, rather than flushing each time we
- ### fill the buffer */
- va_start(va, r);
- while (1) {
- s = va_arg(va, const char *);
- if (s == NULL)
- break;
-
- len = strlen(s);
- if (buffer_output(r, s, len) != APR_SUCCESS) {
- return -1;
- }
-
- written += len;
- }
- va_end(va);
-
- return written;
-}
-
-AP_DECLARE(int) ap_rflush(request_rec *r)
-{
- apr_bucket_brigade *bb;
- apr_bucket *b;
-
- bb = apr_brigade_create(r->pool);
- b = apr_bucket_flush_create();
- APR_BRIGADE_INSERT_TAIL(bb, b);
- if (ap_pass_brigade(r->output_filters, bb) != APR_SUCCESS)
- return -1;
- return 0;
-}
-
static const char *add_optional_notes(request_rec *r,
const char *prefix,
const char *key,
ap_finalize_request_protocol(r);
}
-AP_IMPLEMENT_HOOK_RUN_ALL(int,post_read_request,
- (request_rec *r),(r),OK,DECLINED)
-AP_IMPLEMENT_HOOK_RUN_ALL(int,log_transaction,
- (request_rec *r),(r),OK,DECLINED)
-AP_IMPLEMENT_HOOK_RUN_FIRST(const char *,http_method,
- (const request_rec *r),(r),NULL)
-AP_IMPLEMENT_HOOK_RUN_FIRST(unsigned short,default_port,
- (const request_rec *r),(r),0)
* @package mod_core private header file
*/
-/*
- * These (output) filters are internal to the mod_core operation.
- */
-AP_CORE_DECLARE_NONSTD(apr_status_t) ap_byterange_filter(ap_filter_t *f, apr_bucket_brigade *b);
-AP_CORE_DECLARE_NONSTD(apr_status_t) ap_http_header_filter(ap_filter_t *f, apr_bucket_brigade *b);
-AP_CORE_DECLARE_NONSTD(apr_status_t) ap_content_length_filter(ap_filter_t *,
- apr_bucket_brigade *);
-AP_CORE_DECLARE_NONSTD(apr_status_t) ap_old_write_filter(ap_filter_t *f, apr_bucket_brigade *b);
-
/*
* These (input) filters are internal to the mod_core operation.
*/
apr_status_t ap_http_filter(ap_filter_t *f, apr_bucket_brigade *b, ap_input_mode_t mode);
apr_status_t ap_dechunk_filter(ap_filter_t *f, apr_bucket_brigade *b, ap_input_mode_t mode);
+char *ap_response_code_string(request_rec *r, int error_index);
-/*
- * Setting up the protocol fields for subsidiary requests...
- * Also, a wrapup function to keep the internal accounting straight.
+/**
+ * Send the minimal part of an HTTP response header.
+ * @param r The current request
+ * @param bb The brigade to add the header to.
+ * @warning Modules should be very careful about using this, and should
+ * prefer ap_send_http_header(). Much of the HTTP/1.1 implementation
+ * correctness depends on code in ap_send_http_header().
+ * @deffunc void ap_basic_http_header(request_rec *r, apr_bucket_brigade *bb)
*/
-void ap_set_sub_req_protocol(request_rec *rnew, const request_rec *r);
-void ap_finalize_sub_req_protocol(request_rec *sub_r);
-
+AP_DECLARE(void) ap_basic_http_header(request_rec *r, apr_bucket_brigade *bb);
+
+/**
+ * Send the Status-Line and header fields for HTTP response
+ * @param r The current request
+ * @deffunc void ap_send_http_header(request_rec *r)
+ */
+AP_DECLARE(void) ap_send_http_header(request_rec *r);
-/* Send the response to special method requests */
AP_DECLARE(int) ap_send_http_trace(request_rec *r);
int ap_send_http_options(request_rec *r);
-
-char *ap_response_code_string(request_rec *r, int error_index);
-
#ifdef __cplusplus
}
#endif
#include "http_main.h"
#include "http_log.h"
#include "util_script.h"
+#include "mod_core.h"
#define IMAP_MAGIC_TYPE "application/x-httpd-imap"
rfc1413.c connection.c listen.c \
mpm_common.c util_charset.c util_debug.c util_xml.c \
util_filter.c exports.c buildmark.c scoreboard.c \
- error_bucket.c
+ error_bucket.c protocol.c
targets = delete-exports $(LTLIBRARY_NAME)
--- /dev/null
+/* ====================================================================
+ * The Apache Software License, Version 1.1
+ *
+ * Copyright (c) 2000-2001 The Apache Software Foundation. All rights
+ * reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in
+ * the documentation and/or other materials provided with the
+ * distribution.
+ *
+ * 3. The end-user documentation included with the redistribution,
+ * if any, must include the following acknowledgment:
+ * "This product includes software developed by the
+ * Apache Software Foundation (http://www.apache.org/)."
+ * Alternately, this acknowledgment may appear in the software itself,
+ * if and wherever such third-party acknowledgments normally appear.
+ *
+ * 4. The names "Apache" and "Apache Software Foundation" must
+ * not be used to endorse or promote products derived from this
+ * software without prior written permission. For written
+ * permission, please contact apache@apache.org.
+ *
+ * 5. Products derived from this software may not be called "Apache",
+ * nor may "Apache" appear in their name, without prior written
+ * permission of the Apache Software Foundation.
+ *
+ * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED
+ * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+ * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+ * DISCLAIMED. IN NO EVENT SHALL THE APACHE SOFTWARE FOUNDATION OR
+ * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
+ * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
+ * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
+ * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
+ * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ * ====================================================================
+ *
+ * This software consists of voluntary contributions made by many
+ * individuals on behalf of the Apache Software Foundation. For more
+ * information on the Apache Software Foundation, please see
+ * <http://www.apache.org/>.
+ *
+ * Portions of this software are based upon public domain software
+ * originally written at the National Center for Supercomputing Applications,
+ * University of Illinois, Urbana-Champaign.
+ */
+
+/*
+ * http_protocol.c --- routines which directly communicate with the client.
+ *
+ * Code originally by Rob McCool; much redone by Robert S. Thau
+ * and the Apache Software Foundation.
+ */
+
+#include "apr.h"
+#include "apr_strings.h"
+#include "apr_buckets.h"
+#include "apr_lib.h"
+#include "apr_signal.h"
+
+#define APR_WANT_STDIO /* for sscanf */
+#define APR_WANT_STRFUNC
+#define APR_WANT_MEMFUNC
+#include "apr_want.h"
+
+#define CORE_PRIVATE
+#include "util_filter.h"
+#include "ap_config.h"
+#include "httpd.h"
+#include "http_config.h"
+#include "http_core.h"
+#include "http_protocol.h"
+#include "http_main.h"
+#include "http_request.h"
+#include "http_vhost.h"
+#include "http_log.h" /* For errors detected in basic auth common
+ * support code... */
+#include "util_date.h" /* For parseHTTPdate and BAD_DATE */
+#include "util_charset.h"
+#include "util_ebcdic.h"
+
+#if APR_HAVE_STDARG_H
+#include <stdarg.h>
+#endif
+#if APR_HAVE_UNISTD_H
+#include <unistd.h>
+#endif
+
+
+APR_HOOK_STRUCT(
+ APR_HOOK_LINK(post_read_request)
+ APR_HOOK_LINK(log_transaction)
+ APR_HOOK_LINK(http_method)
+ APR_HOOK_LINK(default_port)
+)
+
+/*
+ * Builds the content-type that should be sent to the client from the
+ * content-type specified. The following rules are followed:
+ * - if type is NULL, type is set to ap_default_type(r)
+ * - if charset adding is disabled, stop processing and return type.
+ * - then, if there are no parameters on type, add the default charset
+ * - return type
+ */
+const char *ap_make_content_type(request_rec *r, const char *type)
+{
+ static const char *needcset[] = {
+ "text/plain",
+ "text/html",
+ NULL };
+ const char **pcset;
+ core_dir_config *conf =
+ (core_dir_config *)ap_get_module_config(r->per_dir_config,
+ &core_module);
+
+ if (!type) {
+ type = ap_default_type(r);
+ }
+ if (conf->add_default_charset != ADD_DEFAULT_CHARSET_ON) {
+ return type;
+ }
+
+ if (ap_strcasestr(type, "charset=") != NULL) {
+ /* already has parameter, do nothing */
+ /* XXX we don't check the validity */
+ ;
+ }
+ else {
+ /* see if it makes sense to add the charset. At present,
+ * we only add it if the Content-type is one of needcset[]
+ */
+ for (pcset = needcset; *pcset ; pcset++) {
+ if (ap_strcasestr(type, *pcset) != NULL) {
+ type = apr_pstrcat(r->pool, type, "; charset=",
+ conf->add_default_charset_name, NULL);
+ break;
+ }
+ }
+ }
+ return type;
+}
+
+static int parse_byterange(char *range, apr_off_t clength,
+ apr_off_t *start, apr_off_t *end)
+{
+ char *dash = strchr(range, '-');
+
+ if (!dash)
+ return 0;
+
+ if ((dash == range)) {
+ /* In the form "-5" */
+ *start = clength - atol(dash + 1);
+ *end = clength - 1;
+ }
+ else {
+ *dash = '\0';
+ dash++;
+ *start = atol(range);
+ if (*dash)
+ *end = atol(dash);
+ else /* "5-" */
+ *end = clength - 1;
+ }
+
+ if (*start < 0)
+ *start = 0;
+
+ if (*end >= clength)
+ *end = clength - 1;
+
+ if (*start > *end)
+ return -1;
+
+ return (*start > 0 || *end < clength);
+}
+
+static int ap_set_byterange(request_rec *r);
+
+typedef struct byterange_ctx {
+ apr_bucket_brigade *bb;
+ int num_ranges;
+ const char *orig_ct;
+} byterange_ctx;
+
+/*
+ * Here we try to be compatible with clients that want multipart/x-byteranges
+ * instead of multipart/byteranges (also see above), as per HTTP/1.1. We
+ * look for the Request-Range header (e.g. Netscape 2 and 3) as an indication
+ * that the browser supports an older protocol. We also check User-Agent
+ * for Microsoft Internet Explorer 3, which needs this as well.
+ */
+static int use_range_x(request_rec *r)
+{
+ const char *ua;
+ return (apr_table_get(r->headers_in, "Request-Range") ||
+ ((ua = apr_table_get(r->headers_in, "User-Agent"))
+ && ap_strstr_c(ua, "MSIE 3")));
+}
+
+#define BYTERANGE_FMT "%" APR_OFF_T_FMT "-%" APR_OFF_T_FMT "/%" APR_OFF_T_FMT
+
+AP_CORE_DECLARE_NONSTD(apr_status_t) ap_byterange_filter(
+ ap_filter_t *f,
+ apr_bucket_brigade *bb)
+{
+#define MIN_LENGTH(len1, len2) ((len1 > len2) ? len2 : len1)
+ request_rec *r = f->r;
+ byterange_ctx *ctx = f->ctx;
+ apr_bucket *e;
+ apr_bucket_brigade *bsend;
+ apr_off_t range_start;
+ apr_off_t range_end;
+ char *current;
+ char *bound_head;
+ apr_ssize_t bb_length;
+ apr_off_t clength = 0;
+ apr_status_t rv;
+ int found = 0;
+
+ if (!ctx) {
+ int num_ranges = ap_set_byterange(r);
+
+ if (num_ranges == -1) {
+ ap_remove_output_filter(f);
+ bsend = apr_brigade_create(r->pool);
+ e = ap_bucket_error_create(HTTP_RANGE_NOT_SATISFIABLE, NULL, r->pool);
+ APR_BRIGADE_INSERT_TAIL(bsend, e);
+ e = apr_bucket_eos_create();
+ APR_BRIGADE_INSERT_TAIL(bsend, e);
+ return ap_pass_brigade(f->next, bsend);
+ }
+ if (num_ranges == 0) {
+ ap_remove_output_filter(f);
+ return ap_pass_brigade(f->next, bb);
+ }
+
+ ctx = f->ctx = apr_pcalloc(r->pool, sizeof(*ctx));
+ ctx->num_ranges = num_ranges;
+
+ if (num_ranges > 1) {
+ ctx->orig_ct = r->content_type;
+ r->content_type =
+ apr_pstrcat(r->pool, "multipart", use_range_x(r) ? "/x-" : "/",
+ "byteranges; boundary=", r->boundary, NULL);
+ }
+
+ /* create a brigade in case we never call ap_save_brigade() */
+ ctx->bb = apr_brigade_create(r->pool);
+ }
+
+ /* We can't actually deal with byte-ranges until we have the whole brigade
+ * because the byte-ranges can be in any order, and according to the RFC,
+ * we SHOULD return the data in the same order it was requested.
+ */
+ if (!APR_BUCKET_IS_EOS(APR_BRIGADE_LAST(bb))) {
+ ap_save_brigade(f, &ctx->bb, &bb);
+ return APR_SUCCESS;
+ }
+
+ /* compute this once (it is an invariant) */
+ bound_head = apr_pstrcat(r->pool,
+ CRLF "--", r->boundary,
+ CRLF "Content-type: ",
+ ap_make_content_type(r, ctx->orig_ct),
+ CRLF "Content-range: bytes ",
+ NULL);
+ ap_xlate_proto_to_ascii(bound_head, strlen(bound_head));
+
+ /* If we have a saved brigade from a previous run, concat the passed
+ * brigade with our saved brigade. Otherwise just continue.
+ */
+ if (ctx->bb) {
+ APR_BRIGADE_CONCAT(ctx->bb, bb);
+ bb = ctx->bb;
+ ctx->bb = NULL; /* ### strictly necessary? call brigade_destroy? */
+ }
+
+ /* It is possible that we won't have a content length yet, so we have to
+ * compute the length before we can actually do the byterange work.
+ */
+ (void) apr_brigade_length(bb, 1, &bb_length);
+ clength = (apr_off_t)bb_length;
+
+ /* this brigade holds what we will be sending */
+ bsend = apr_brigade_create(r->pool);
+
+ while ((current = ap_getword(r->pool, &r->range, ',')) &&
+ (rv = parse_byterange(current, clength, &range_start, &range_end))) {
+ apr_bucket *e2;
+ apr_bucket *ec;
+
+ if (rv == -1) {
+ continue;
+ }
+ else {
+ found = 1;
+ }
+
+ if (ctx->num_ranges > 1) {
+ char *ts;
+
+ e = apr_bucket_pool_create(bound_head,
+ strlen(bound_head), r->pool);
+ APR_BRIGADE_INSERT_TAIL(bsend, e);
+
+ ts = apr_psprintf(r->pool, BYTERANGE_FMT CRLF CRLF,
+ range_start, range_end, clength);
+ ap_xlate_proto_to_ascii(ts, strlen(ts));
+ e = apr_bucket_pool_create(ts, strlen(ts), r->pool);
+ APR_BRIGADE_INSERT_TAIL(bsend, e);
+ }
+
+ e = apr_brigade_partition(bb, range_start);
+ e2 = apr_brigade_partition(bb, range_end + 1);
+
+ ec = e;
+ do {
+ apr_bucket *foo;
+ const char *str;
+ apr_size_t len;
+
+ if (apr_bucket_copy(ec, &foo) != APR_SUCCESS) {
+ apr_bucket_read(ec, &str, &len, APR_BLOCK_READ);
+ foo = apr_bucket_heap_create(str, len, 0, NULL);
+ }
+ APR_BRIGADE_INSERT_TAIL(bsend, foo);
+ ec = APR_BUCKET_NEXT(ec);
+ } while (ec != e2);
+ }
+
+ if (found == 0) {
+ ap_remove_output_filter(f);
+ r->status = HTTP_OK;
+ return HTTP_RANGE_NOT_SATISFIABLE;
+ }
+
+ if (ctx->num_ranges > 1) {
+ char *end;
+
+ /* add the final boundary */
+ end = apr_pstrcat(r->pool, CRLF "--", r->boundary, "--" CRLF, NULL);
+ ap_xlate_proto_to_ascii(end, strlen(end));
+ e = apr_bucket_pool_create(end, strlen(end), r->pool);
+ APR_BRIGADE_INSERT_TAIL(bsend, e);
+ }
+
+ e = apr_bucket_eos_create();
+ APR_BRIGADE_INSERT_TAIL(bsend, e);
+
+ /* we're done with the original content */
+ apr_brigade_destroy(bb);
+
+ /* send our multipart output */
+ return ap_pass_brigade(f->next, bsend);
+}
+
+AP_DECLARE(void) ap_set_content_length(request_rec *r, apr_off_t clength)
+{
+ r->clength = clength;
+ apr_table_setn(r->headers_out, "Content-Length",
+ apr_psprintf(r->pool, "%" APR_OFF_T_FMT, clength));
+}
+
+/*
+ * Return the latest rational time from a request/mtime (modification time)
+ * pair. We return the mtime unless it's in the future, in which case we
+ * return the current time. We use the request time as a reference in order
+ * to limit the number of calls to time(). We don't check for futurosity
+ * unless the mtime is at least as new as the reference.
+ */
+AP_DECLARE(apr_time_t) ap_rationalize_mtime(request_rec *r, apr_time_t mtime)
+{
+ apr_time_t now;
+
+ /* For all static responses, it's almost certain that the file was
+ * last modified before the beginning of the request. So there's
+ * no reason to call time(NULL) again. But if the response has been
+ * created on demand, then it might be newer than the time the request
+ * started. In this event we really have to call time(NULL) again
+ * so that we can give the clients the most accurate Last-Modified. If we
+ * were given a time in the future, we return the current time - the
+ * Last-Modified can't be in the future.
+ */
+ now = (mtime < r->request_time) ? r->request_time : apr_time_now();
+ return (mtime > now) ? now : mtime;
+}
+
+/*
+ * Construct an entity tag (ETag) from resource information. If it's a real
+ * file, build in some of the file characteristics. If the modification time
+ * is newer than (request-time minus 1 second), mark the ETag as weak - it
+ * could be modified again in as short an interval. We rationalize the
+ * modification time we're given to keep it from being in the future.
+ */
+AP_DECLARE(char *) ap_make_etag(request_rec *r, int force_weak)
+{
+ char *etag;
+ char *weak;
+
+ /*
+ * Make an ETag header out of various pieces of information. We use
+ * the last-modified date and, if we have a real file, the
+ * length and inode number - note that this doesn't have to match
+ * the content-length (i.e. includes), it just has to be unique
+ * for the file.
+ *
+ * If the request was made within a second of the last-modified date,
+ * we send a weak tag instead of a strong one, since it could
+ * be modified again later in the second, and the validation
+ * would be incorrect.
+ */
+
+ weak = ((r->request_time - r->mtime > APR_USEC_PER_SEC)
+ && !force_weak) ? "" : "W/";
+
+ if (r->finfo.filetype != 0) {
+ etag = apr_psprintf(r->pool,
+ "%s\"%lx-%lx-%lx\"", weak,
+ (unsigned long) r->finfo.inode,
+ (unsigned long) r->finfo.size,
+ (unsigned long) r->mtime);
+ }
+ else {
+ etag = apr_psprintf(r->pool, "%s\"%lx\"", weak,
+ (unsigned long) r->mtime);
+ }
+
+ return etag;
+}
+
+AP_DECLARE(void) ap_set_etag(request_rec *r)
+{
+ char *etag;
+ char *variant_etag, *vlv;
+ int vlv_weak;
+
+ if (!r->vlist_validator) {
+ etag = ap_make_etag(r, 0);
+ }
+ else {
+ /* If we have a variant list validator (vlv) due to the
+ * response being negotiated, then we create a structured
+ * entity tag which merges the variant etag with the variant
+ * list validator (vlv). This merging makes revalidation
+ * somewhat safer, ensures that caches which can deal with
+ * Vary will (eventually) be updated if the set of variants is
+ * changed, and is also a protocol requirement for transparent
+ * content negotiation.
+ */
+
+ /* if the variant list validator is weak, we make the whole
+ * structured etag weak. If we would not, then clients could
+ * have problems merging range responses if we have different
+ * variants with the same non-globally-unique strong etag.
+ */
+
+ vlv = r->vlist_validator;
+ vlv_weak = (vlv[0] == 'W');
+
+ variant_etag = ap_make_etag(r, vlv_weak);
+
+ /* merge variant_etag and vlv into a structured etag */
+
+ variant_etag[strlen(variant_etag) - 1] = '\0';
+ if (vlv_weak)
+ vlv += 3;
+ else
+ vlv++;
+ etag = apr_pstrcat(r->pool, variant_etag, ";", vlv, NULL);
+ }
+
+ apr_table_setn(r->headers_out, "ETag", etag);
+}
+
+/* Get a line of protocol input, including any continuation lines
+ * caused by MIME folding (or broken clients) if fold != 0, and place it
+ * in the buffer s, of size n bytes, without the ending newline.
+ *
+ * Returns -1 on error, or the length of s.
+ *
+ * Notes: Because the buffer uses 1 char for NUL, the most we can return is
+ * (n - 1) actual characters.
+ *
+ * If no LF is detected on the last line due to a dropped connection
+ * or a full buffer, that's considered an error.
+ */
+AP_CORE_DECLARE(int) ap_getline(char *s, int n, request_rec *r, int fold)
+{
+ char *pos = s;
+ char *last_char;
+ char *beyond_buff = s + n;
+ const char *temp;
+ int retval;
+ int total = 0;
+ int looking_ahead = 0;
+ apr_size_t length;
+ conn_rec *c = r->connection;
+ core_request_config *req_cfg;
+ apr_bucket_brigade *b;
+ apr_bucket *e;
+
+ req_cfg = (core_request_config *)
+ ap_get_module_config(r->request_config, &core_module);
+ b = req_cfg->bb;
+ /* make sure it's empty unless we're folding */
+ AP_DEBUG_ASSERT(fold || APR_BRIGADE_EMPTY(b));
+
+ while (1) {
+ if (APR_BRIGADE_EMPTY(b)) {
+ if (ap_get_brigade(c->input_filters, b, AP_MODE_BLOCKING) != APR_SUCCESS ||
+ APR_BRIGADE_EMPTY(b)) {
+ return -1;
+ }
+ }
+ e = APR_BRIGADE_FIRST(b);
+ if (e->length == 0) {
+ apr_bucket_delete(e);
+ continue;
+ }
+ retval = apr_bucket_read(e, &temp, &length, APR_BLOCK_READ);
+
+ if (retval != APR_SUCCESS) {
+ total = ((length < 0) && (total == 0)) ? -1 : total;
+ break;
+ }
+
+ if ((looking_ahead) && (*temp != APR_ASCII_BLANK) && (*temp != APR_ASCII_TAB)) {
+ /* can't fold because next line isn't indented,
+ * so return what we have. lookahead brigade is
+ * stashed on req_cfg->bb
+ */
+ AP_DEBUG_ASSERT(!APR_BRIGADE_EMPTY(req_cfg->bb));
+ break;
+ }
+ last_char = pos + length - 1;
+ if (last_char < beyond_buff) {
+ memcpy(pos, temp, length);
+ apr_bucket_delete(e);
+ }
+ else {
+ /* input line was larger than the caller's buffer */
+ apr_brigade_destroy(b);
+
+ /* don't need to worry about req_cfg->bb being bogus.
+ * the request is about to die, and ErrorDocument
+ * redirects get a new req_cfg->bb
+ */
+
+ return -1;
+ }
+
+ pos = last_char; /* Point at the last character */
+
+ if (*pos == APR_ASCII_LF) { /* Did we get a full line of input? */
+
+ if (pos > s && *(pos - 1) == APR_ASCII_CR) {
+ --pos; /* zap optional CR before LF */
+ }
+
+ /*
+ * Trim any extra trailing spaces or tabs except for the first
+ * space or tab at the beginning of a blank string. This makes
+ * it much easier to check field values for exact matches, and
+ * saves memory as well. Terminate string at end of line.
+ */
+ while (pos > (s + 1) &&
+ (*(pos - 1) == APR_ASCII_BLANK || *(pos - 1) == APR_ASCII_TAB)) {
+ --pos; /* trim extra trailing spaces or tabs */
+ }
+ *pos = '\0'; /* zap end of string */
+ total = pos - s; /* update total string length */
+
+ /* look ahead another line if line folding is desired
+ * and this line isn't empty
+ */
+ if (fold && total) {
+ looking_ahead = 1;
+ }
+ else {
+ AP_DEBUG_ASSERT(APR_BRIGADE_EMPTY(req_cfg->bb));
+ break;
+ }
+ }
+ else {
+ /* no LF yet...character mode client (telnet)...keep going
+ * bump past last character read,
+ * and set total in case we bail before finding a LF
+ */
+ total = ++pos - s;
+ looking_ahead = 0; /* only appropriate right after LF */
+ }
+ }
+ ap_xlate_proto_from_ascii(s, total);
+ return total;
+}
+
+/* parse_uri: break apart the uri
+ * Side Effects:
+ * - sets r->args to rest after '?' (or NULL if no '?')
+ * - sets r->uri to request uri (without r->args part)
+ * - sets r->hostname (if not set already) from request (scheme://host:port)
+ */
+AP_CORE_DECLARE(void) ap_parse_uri(request_rec *r, const char *uri)
+{
+ int status = HTTP_OK;
+
+ r->unparsed_uri = apr_pstrdup(r->pool, uri);
+
+ if (r->method_number == M_CONNECT) {
+ status = ap_parse_hostinfo_components(r->pool, uri, &r->parsed_uri);
+ }
+ else {
+ /* Simple syntax Errors in URLs are trapped by parse_uri_components(). */
+ status = ap_parse_uri_components(r->pool, uri, &r->parsed_uri);
+ }
+
+ if (ap_is_HTTP_SUCCESS(status)) {
+ /* if it has a scheme we may need to do absoluteURI vhost stuff */
+ if (r->parsed_uri.scheme
+ && !strcasecmp(r->parsed_uri.scheme, ap_http_method(r))) {
+ r->hostname = r->parsed_uri.hostname;
+ }
+ else if (r->method_number == M_CONNECT) {
+ r->hostname = r->parsed_uri.hostname;
+ }
+ r->args = r->parsed_uri.query;
+ r->uri = r->parsed_uri.path ? r->parsed_uri.path
+ : apr_pstrdup(r->pool, "/");
+#if defined(OS2) || defined(WIN32)
+ /* Handle path translations for OS/2 and plug security hole.
+ * This will prevent "http://www.wherever.com/..\..\/" from
+ * returning a directory for the root drive.
+ */
+ {
+ char *x;
+
+ for (x = r->uri; (x = strchr(x, '\\')) != NULL; )
+ *x = '/';
+ }
+#endif /* OS2 || WIN32 */
+ }
+ else {
+ r->args = NULL;
+ r->hostname = NULL;
+ r->status = status; /* set error status */
+ r->uri = apr_pstrdup(r->pool, uri);
+ }
+}
+
+static int read_request_line(request_rec *r)
+{
+ char l[DEFAULT_LIMIT_REQUEST_LINE + 2]; /* getline's two extra for \n\0 */
+ const char *ll = l;
+ const char *uri;
+#if 0
+ conn_rec *conn = r->connection;
+#endif
+ int major = 1, minor = 0; /* Assume HTTP/1.0 if non-"HTTP" protocol */
+ int len;
+
+ /* Read past empty lines until we get a real request line,
+ * a read error, the connection closes (EOF), or we timeout.
+ *
+ * We skip empty lines because browsers have to tack a CRLF on to the end
+ * of POSTs to support old CERN webservers. But note that we may not
+ * have flushed any previous response completely to the client yet.
+ * We delay the flush as long as possible so that we can improve
+ * performance for clients that are pipelining requests. If a request
+ * is pipelined then we won't block during the (implicit) read() below.
+ * If the requests aren't pipelined, then the client is still waiting
+ * for the final buffer flush from us, and we will block in the implicit
+ * read(). B_SAFEREAD ensures that the BUFF layer flushes if it will
+ * have to block during a read.
+ */
+
+ while ((len = ap_getline(l, sizeof(l), r, 0)) <= 0) {
+ if (len < 0) { /* includes EOF */
+ /* this is a hack to make sure that request time is set,
+ * it's not perfect, but it's better than nothing
+ */
+ r->request_time = apr_time_now();
+ return 0;
+ }
+ }
+ /* we've probably got something to do, ignore graceful restart requests */
+
+ /* XXX - sigwait doesn't work if the signal has been SIG_IGNed (under
+ * linux 2.0 w/ glibc 2.0, anyway), and this step isn't necessary when
+ * we're running a sigwait thread anyway. If/when unthreaded mode is
+ * put back in, we should make sure to ignore this signal iff a sigwait
+ * thread isn't used. - mvsk
+
+#ifdef SIGWINCH
+ apr_signal(SIGWINCH, SIG_IGN);
+#endif
+ */
+
+ r->request_time = apr_time_now();
+ r->the_request = apr_pstrdup(r->pool, l);
+ r->method = ap_getword_white(r->pool, &ll);
+
+#if 0
+/* XXX If we want to keep track of the Method, the protocol module should do
+ * it. That support isn't in the scoreboard yet. Hopefully next week
+ * sometime. rbb */
+ ap_update_connection_status(AP_CHILD_THREAD_FROM_ID(conn->id), "Method", r->method);
+#endif
+ uri = ap_getword_white(r->pool, &ll);
+
+ /* Provide quick information about the request method as soon as known */
+
+ r->method_number = ap_method_number_of(r->method);
+ if (r->method_number == M_GET && r->method[0] == 'H') {
+ r->header_only = 1;
+ }
+
+ ap_parse_uri(r, uri);
+
+ /* ap_getline returns (size of max buffer - 1) if it fills up the
+ * buffer before finding the end-of-line. This is only going to
+ * happen if it exceeds the configured limit for a request-line.
+ */
+ if (len > r->server->limit_req_line) {
+ r->status = HTTP_REQUEST_URI_TOO_LARGE;
+ r->proto_num = HTTP_VERSION(1,0);
+ r->protocol = apr_pstrdup(r->pool, "HTTP/1.0");
+ return 0;
+ }
+
+ r->assbackwards = (ll[0] == '\0');
+ r->protocol = apr_pstrdup(r->pool, ll[0] ? ll : "HTTP/0.9");
+/* XXX If we want to keep track of the Method, the protocol module should do
+ * it. That support isn't in the scoreboard yet. Hopefully next week
+ * sometime. rbb
+ ap_update_connection_status(conn->id, "Protocol", r->protocol);
+ */
+
+ if (2 == sscanf(r->protocol, "HTTP/%u.%u", &major, &minor)
+ && minor < HTTP_VERSION(1,0)) /* don't allow HTTP/0.1000 */
+ r->proto_num = HTTP_VERSION(major, minor);
+ else
+ r->proto_num = HTTP_VERSION(1,0);
+
+ return 1;
+}
+
+static void get_mime_headers(request_rec *r)
+{
+ char field[DEFAULT_LIMIT_REQUEST_FIELDSIZE + 2]; /* getline's two extra */
+ char *value;
+ char *copy;
+ int len;
+ int fields_read = 0;
+ apr_table_t *tmp_headers;
+
+ /* We'll use apr_table_overlap later to merge these into r->headers_in. */
+ tmp_headers = apr_table_make(r->pool, 50);
+
+ /*
+ * Read header lines until we get the empty separator line, a read error,
+ * the connection closes (EOF), reach the server limit, or we timeout.
+ */
+ while ((len = ap_getline(field, sizeof(field), r, 1)) > 0) {
+
+ if (r->server->limit_req_fields &&
+ (++fields_read > r->server->limit_req_fields)) {
+ r->status = HTTP_BAD_REQUEST;
+ apr_table_setn(r->notes, "error-notes",
+ "The number of request header fields exceeds "
+ "this server's limit.<P>\n");
+ return;
+ }
+ /* ap_getline returns (size of max buffer - 1) if it fills up the
+ * buffer before finding the end-of-line. This is only going to
+ * happen if it exceeds the configured limit for a field size.
+ */
+ if (len > r->server->limit_req_fieldsize) {
+ r->status = HTTP_BAD_REQUEST;
+ apr_table_setn(r->notes, "error-notes",
+ apr_pstrcat(r->pool,
+ "Size of a request header field "
+ "exceeds server limit.<P>\n"
+ "<PRE>\n",
+ ap_escape_html(r->pool, field),
+ "</PRE>\n", NULL));
+ return;
+ }
+ copy = apr_palloc(r->pool, len + 1);
+ memcpy(copy, field, len + 1);
+
+ if (!(value = strchr(copy, ':'))) { /* Find the colon separator */
+ r->status = HTTP_BAD_REQUEST; /* or abort the bad request */
+ apr_table_setn(r->notes, "error-notes",
+ apr_pstrcat(r->pool,
+ "Request header field is missing "
+ "colon separator.<P>\n"
+ "<PRE>\n",
+ ap_escape_html(r->pool, copy),
+ "</PRE>\n", NULL));
+ return;
+ }
+
+ *value = '\0';
+ ++value;
+ while (*value == ' ' || *value == '\t') {
+ ++value; /* Skip to start of value */
+ }
+
+ apr_table_addn(tmp_headers, copy, value);
+ }
+
+ apr_table_overlap(r->headers_in, tmp_headers, APR_OVERLAP_TABLES_MERGE);
+}
+
+request_rec *ap_read_request(conn_rec *conn)
+{
+ request_rec *r;
+ apr_pool_t *p;
+ const char *expect;
+ int access_status;
+ core_request_config *req_cfg;
+
+ apr_pool_create(&p, conn->pool);
+ r = apr_pcalloc(p, sizeof(request_rec));
+ r->pool = p;
+ r->connection = conn;
+ r->server = conn->base_server;
+
+ conn->keptalive = conn->keepalive == 1;
+ conn->keepalive = 0;
+
+ r->user = NULL;
+ r->ap_auth_type = NULL;
+
+ r->allowed_methods = ap_make_method_list(p, 2);
+
+ r->headers_in = apr_table_make(r->pool, 50);
+ r->subprocess_env = apr_table_make(r->pool, 50);
+ r->headers_out = apr_table_make(r->pool, 12);
+ r->err_headers_out = apr_table_make(r->pool, 5);
+ r->notes = apr_table_make(r->pool, 5);
+
+ r->request_config = ap_create_request_config(r->pool);
+ req_cfg = apr_pcalloc(r->pool, sizeof(core_request_config));
+ req_cfg->bb = apr_brigade_create(r->pool);
+ ap_set_module_config(r->request_config, &core_module, req_cfg);
+
+ r->per_dir_config = r->server->lookup_defaults;
+
+ r->sent_bodyct = 0; /* bytect isn't for body */
+
+ r->read_length = 0;
+ r->read_body = REQUEST_NO_BODY;
+
+ r->status = HTTP_REQUEST_TIME_OUT; /* Until we get a request */
+ r->the_request = NULL;
+ r->output_filters = conn->output_filters;
+ r->input_filters = conn->input_filters;
+
+ apr_setsocketopt(conn->client_socket, APR_SO_TIMEOUT,
+ (int)(conn->keptalive
+ ? r->server->keep_alive_timeout * APR_USEC_PER_SEC
+ : r->server->timeout * APR_USEC_PER_SEC));
+
+ ap_add_output_filter("BYTERANGE", NULL, r, r->connection);
+ ap_add_output_filter("CONTENT_LENGTH", NULL, r, r->connection);
+ ap_add_output_filter("HTTP_HEADER", NULL, r, r->connection);
+
+ /* Get the request... */
+ if (!read_request_line(r)) {
+ if (r->status == HTTP_REQUEST_URI_TOO_LARGE) {
+ ap_log_rerror(APLOG_MARK, APLOG_NOERRNO|APLOG_ERR, 0, r,
+ "request failed: URI too long");
+ ap_send_error_response(r, 0);
+ ap_run_log_transaction(r);
+ return r;
+ }
+ return NULL;
+ }
+ if (r->connection->keptalive) {
+ apr_setsocketopt(r->connection->client_socket, APR_SO_TIMEOUT,
+ (int)(r->server->timeout * APR_USEC_PER_SEC));
+ }
+ if (!r->assbackwards) {
+ get_mime_headers(r);
+ if (r->status != HTTP_REQUEST_TIME_OUT) {
+ ap_log_rerror(APLOG_MARK, APLOG_NOERRNO|APLOG_ERR, 0, r,
+ "request failed: error reading the headers");
+ ap_send_error_response(r, 0);
+ ap_run_log_transaction(r);
+ return r;
+ }
+ }
+ else {
+ if (r->header_only) {
+ /*
+ * Client asked for headers only with HTTP/0.9, which doesn't send
+ * headers! Have to dink things just to make sure the error message
+ * comes through...
+ */
+ ap_log_rerror(APLOG_MARK, APLOG_NOERRNO|APLOG_ERR, 0, r,
+ "client sent invalid HTTP/0.9 request: HEAD %s",
+ r->uri);
+ r->header_only = 0;
+ r->status = HTTP_BAD_REQUEST;
+ ap_send_error_response(r, 0);
+ ap_run_log_transaction(r);
+ return r;
+ }
+ }
+
+ r->status = HTTP_OK; /* Until further notice. */
+
+ /* update what we think the virtual host is based on the headers we've
+ * now read. may update status.
+ */
+ ap_update_vhost_from_headers(r);
+
+ /* we may have switched to another server */
+ r->per_dir_config = r->server->lookup_defaults;
+
+ conn->keptalive = 0; /* We now have a request to play with */
+
+ if ((!r->hostname && (r->proto_num >= HTTP_VERSION(1,1))) ||
+ ((r->proto_num == HTTP_VERSION(1,1)) &&
+ !apr_table_get(r->headers_in, "Host"))) {
+ /*
+ * Client sent us an HTTP/1.1 or later request without telling us the
+ * hostname, either with a full URL or a Host: header. We therefore
+ * need to (as per the 1.1 spec) send an error. As a special case,
+ * HTTP/1.1 mentions twice (S9, S14.23) that a request MUST contain
+ * a Host: header, and the server MUST respond with 400 if it doesn't.
+ */
+ r->status = HTTP_BAD_REQUEST;
+ ap_log_rerror(APLOG_MARK, APLOG_NOERRNO|APLOG_ERR, 0, r,
+ "client sent HTTP/1.1 request without hostname "
+ "(see RFC2616 section 14.23): %s", r->uri);
+ }
+ if (r->status != HTTP_OK) {
+ ap_send_error_response(r, 0);
+ ap_run_log_transaction(r);
+ return r;
+ }
+ if (((expect = apr_table_get(r->headers_in, "Expect")) != NULL) &&
+ (expect[0] != '\0')) {
+ /*
+ * The Expect header field was added to HTTP/1.1 after RFC 2068
+ * as a means to signal when a 100 response is desired and,
+ * unfortunately, to signal a poor man's mandatory extension that
+ * the server must understand or return 417 Expectation Failed.
+ */
+ if (strcasecmp(expect, "100-continue") == 0) {
+ r->expecting_100 = 1;
+ }
+ else {
+ r->status = HTTP_EXPECTATION_FAILED;
+ ap_log_rerror(APLOG_MARK, APLOG_NOERRNO|APLOG_INFO, 0, r,
+ "client sent an unrecognized expectation value of "
+ "Expect: %s", expect);
+ ap_send_error_response(r, 0);
+ (void) ap_discard_request_body(r);
+ ap_run_log_transaction(r);
+ return r;
+ }
+ }
+
+ if ((access_status = ap_run_post_read_request(r))) {
+ ap_die(access_status, r);
+ ap_run_log_transaction(r);
+ return NULL;
+ }
+
+ return r;
+}
+
+/*
+ * A couple of other functions which initialize some of the fields of
+ * a request structure, as appropriate for adjuncts of one kind or another
+ * to a request in progress. Best here, rather than elsewhere, since
+ * *someone* has to set the protocol-specific fields...
+ */
+
+void ap_set_sub_req_protocol(request_rec *rnew, const request_rec *r)
+{
+ rnew->the_request = r->the_request; /* Keep original request-line */
+
+ rnew->assbackwards = 1; /* Don't send headers from this. */
+ rnew->no_local_copy = 1; /* Don't try to send HTTP_NOT_MODIFIED for a
+ * fragment. */
+ rnew->method = "GET";
+ rnew->method_number = M_GET;
+ rnew->protocol = "INCLUDED";
+
+ rnew->status = HTTP_OK;
+
+ rnew->headers_in = r->headers_in;
+ rnew->subprocess_env = apr_table_copy(rnew->pool, r->subprocess_env);
+ rnew->headers_out = apr_table_make(rnew->pool, 5);
+ rnew->err_headers_out = apr_table_make(rnew->pool, 5);
+ rnew->notes = apr_table_make(rnew->pool, 5);
+
+ rnew->expecting_100 = r->expecting_100;
+ rnew->read_length = r->read_length;
+ rnew->read_body = REQUEST_NO_BODY;
+
+ rnew->main = (request_rec *) r;
+}
+
+static void end_output_stream(request_rec *r)
+{
+ apr_bucket_brigade *bb;
+ apr_bucket *b;
+
+ bb = apr_brigade_create(r->pool);
+ b = apr_bucket_eos_create();
+ APR_BRIGADE_INSERT_TAIL(bb, b);
+ ap_pass_brigade(r->output_filters, bb);
+}
+
+void ap_finalize_sub_req_protocol(request_rec *sub)
+{
+ end_output_stream(sub);
+}
+
+/* finalize_request_protocol is called at completion of sending the
+ * response. Its sole purpose is to send the terminating protocol
+ * information for any wrappers around the response message body
+ * (i.e., transfer encodings). It should have been named finalize_response.
+ */
+AP_DECLARE(void) ap_finalize_request_protocol(request_rec *r)
+{
+ while (r->next) {
+ r = r->next;
+ }
+ /* tell the filter chain there is no more content coming */
+ if (!r->eos_sent) {
+ end_output_stream(r);
+ }
+}
+
+/*
+ * Support for the Basic authentication protocol, and a bit for Digest.
+ */
+
+AP_DECLARE(void) ap_note_auth_failure(request_rec *r)
+{
+ if (!strcasecmp(ap_auth_type(r), "Basic"))
+ ap_note_basic_auth_failure(r);
+ else if (!strcasecmp(ap_auth_type(r), "Digest"))
+ ap_note_digest_auth_failure(r);
+}
+
+AP_DECLARE(void) ap_note_basic_auth_failure(request_rec *r)
+{
+ if (strcasecmp(ap_auth_type(r), "Basic"))
+ ap_note_auth_failure(r);
+ else
+ apr_table_setn(r->err_headers_out,
+ r->proxyreq ? "Proxy-Authenticate" : "WWW-Authenticate",
+ apr_pstrcat(r->pool, "Basic realm=\"", ap_auth_name(r), "\"",
+ NULL));
+}
+
+AP_DECLARE(void) ap_note_digest_auth_failure(request_rec *r)
+{
+ apr_table_setn(r->err_headers_out,
+ r->proxyreq ? "Proxy-Authenticate" : "WWW-Authenticate",
+ apr_psprintf(r->pool, "Digest realm=\"%s\", nonce=\"%llx\"",
+ ap_auth_name(r), r->request_time));
+}
+
+AP_DECLARE(int) ap_get_basic_auth_pw(request_rec *r, const char **pw)
+{
+ const char *auth_line = apr_table_get(r->headers_in,
+ r->proxyreq ? "Proxy-Authorization"
+ : "Authorization");
+ const char *t;
+
+ if (!(t = ap_auth_type(r)) || strcasecmp(t, "Basic"))
+ return DECLINED;
+
+ if (!ap_auth_name(r)) {
+ ap_log_rerror(APLOG_MARK, APLOG_NOERRNO|APLOG_ERR,
+ 0, r, "need AuthName: %s", r->uri);
+ return HTTP_INTERNAL_SERVER_ERROR;
+ }
+
+ if (!auth_line) {
+ ap_note_basic_auth_failure(r);
+ return HTTP_UNAUTHORIZED;
+ }
+
+ if (strcasecmp(ap_getword(r->pool, &auth_line, ' '), "Basic")) {
+ /* Client tried to authenticate using wrong auth scheme */
+ ap_log_rerror(APLOG_MARK, APLOG_NOERRNO|APLOG_ERR, 0, r,
+ "client used wrong authentication scheme: %s", r->uri);
+ ap_note_basic_auth_failure(r);
+ return HTTP_UNAUTHORIZED;
+ }
+
+ while (*auth_line== ' ' || *auth_line== '\t') {
+ auth_line++;
+ }
+
+ t = ap_pbase64decode(r->pool, auth_line);
+ /* Note that this allocation has to be made from r->connection->pool
+ * because it has the lifetime of the connection. The other allocations
+ * are temporary and can be tossed away any time.
+ */
+ r->user = ap_getword_nulls (r->pool, &t, ':');
+ r->ap_auth_type = "Basic";
+
+ *pw = t;
+
+ return OK;
+}
+
+struct content_length_ctx {
+ apr_bucket_brigade *saved;
+ int compute_len;
+ apr_size_t curr_len;
+};
+
+/* This filter computes the content length, but it also computes the number
+ * of bytes sent to the client. This means that this filter will always run
+ * through all of the buckets in all brigades
+ */
+AP_CORE_DECLARE_NONSTD(apr_status_t) ap_content_length_filter(ap_filter_t *f,
+ apr_bucket_brigade *b)
+{
+ request_rec *r = f->r;
+ struct content_length_ctx *ctx;
+ apr_status_t rv;
+ apr_bucket *e;
+ int send_it = 0;
+
+ ctx = f->ctx;
+ if (!ctx) { /* first time through */
+ f->ctx = ctx = apr_pcalloc(r->pool, sizeof(struct content_length_ctx));
+ }
+
+ APR_BRIGADE_FOREACH(e, b) {
+ const char *ignored;
+ apr_size_t length;
+
+ if (APR_BUCKET_IS_EOS(e) || APR_BUCKET_IS_FLUSH(e)) {
+ send_it = 1;
+ }
+ if (e->length == -1) { /* if length unknown */
+ rv = apr_bucket_read(e, &ignored, &length, APR_BLOCK_READ);
+ if (rv != APR_SUCCESS) {
+ return rv;
+ }
+ }
+ else {
+ length = e->length;
+ }
+ ctx->curr_len += length;
+ r->bytes_sent += length;
+ }
+
+ if ((ctx->curr_len < AP_MIN_BYTES_TO_WRITE) && !send_it) {
+ return ap_save_brigade(f, &ctx->saved, &b);
+ }
+
+ /* We will compute a content length if:
+ * We already have all the data
+ * This is a bit confusing, because we will always buffer up
+ * to AP_MIN_BYTES_TO_WRITE, so if we get all the data while
+ * we are buffering that much data, we set the c-l.
+ * or We are in a 1.1 request and we can't chunk
+ * or This is a keepalive connection
+ * We may want to change this later to just close the connection
+ */
+ if ((r->proto_num == HTTP_VERSION(1,1)
+ && !ap_find_last_token(f->r->pool,
+ apr_table_get(r->headers_out,
+ "Transfer-Encoding"),
+ "chunked"))
+ || (f->r->connection->keepalive)
+ || (APR_BUCKET_IS_EOS(APR_BRIGADE_LAST(b)))) {
+ ctx->compute_len = 1;
+ }
+ else {
+ ctx->compute_len = 0;
+ }
+
+ if (ctx->compute_len) {
+ /* save the brigade; we can't pass any data to the next
+ * filter until we have the entire content length
+ */
+ if (!send_it) {
+ ap_save_brigade(f, &ctx->saved, &b);
+ return APR_SUCCESS;
+ }
+ ap_set_content_length(r, r->bytes_sent);
+ }
+ if (ctx->saved) {
+ APR_BRIGADE_CONCAT(ctx->saved, b);
+ apr_brigade_destroy(b);
+ b = ctx->saved;
+ ctx->saved = NULL;
+ }
+
+ ctx->curr_len = 0;
+ return ap_pass_brigade(f->next, b);
+}
+
+static int ap_set_byterange(request_rec *r)
+{
+ const char *range;
+ const char *if_range;
+ const char *match;
+ const char *ct;
+ apr_off_t range_start;
+ apr_off_t range_end;
+ int num_ranges;
+
+ if (r->assbackwards)
+ return 0;
+
+ /* Check for Range request-header (HTTP/1.1) or Request-Range for
+ * backwards-compatibility with second-draft Luotonen/Franks
+ * byte-ranges (e.g. Netscape Navigator 2-3).
+ *
+ * We support this form, with Request-Range, and (farther down) we
+ * send multipart/x-byteranges instead of multipart/byteranges for
+ * Request-Range based requests to work around a bug in Netscape
+ * Navigator 2-3 and MSIE 3.
+ */
+
+ if (!(range = apr_table_get(r->headers_in, "Range")))
+ range = apr_table_get(r->headers_in, "Request-Range");
+
+ if (!range || strncasecmp(range, "bytes=", 6)) {
+ return 0;
+ }
+
+ /* Check the If-Range header for Etag or Date.
+ * Note that this check will return false (as required) if either
+ * of the two etags are weak.
+ */
+ if ((if_range = apr_table_get(r->headers_in, "If-Range"))) {
+ if (if_range[0] == '"') {
+ if (!(match = apr_table_get(r->headers_out, "Etag")) ||
+ (strcmp(if_range, match) != 0))
+ return 0;
+ }
+ else if (!(match = apr_table_get(r->headers_out, "Last-Modified")) ||
+ (strcmp(if_range, match) != 0))
+ return 0;
+ }
+
+ /* would be nice to pick this up from f->ctx */
+ ct = ap_make_content_type(r, r->content_type);
+
+ if (!ap_strchr_c(range, ',')) {
+ int rv;
+ /* A single range */
+
+ /* rvarse_byterange() modifies the contents, so make a copy */
+ if ((rv = parse_byterange(apr_pstrdup(r->pool, range + 6), r->clength,
+ &range_start, &range_end)) <= 0) {
+ return rv;
+ }
+ apr_table_setn(r->headers_out, "Content-Range",
+ apr_psprintf(r->pool, "bytes " BYTERANGE_FMT,
+ range_start, range_end, r->clength));
+ apr_table_setn(r->headers_out, "Content-Type", ct);
+
+ num_ranges = 1;
+ }
+ else {
+ /* a multiple range */
+
+ num_ranges = 2;
+
+ /* ### it would be nice if r->boundary was in f->ctx */
+ r->boundary = apr_psprintf(r->pool, "%qx%lx",
+ r->request_time, (long) getpid());
+
+ apr_table_setn(r->headers_out, "Content-Type",
+ apr_pstrcat(r->pool,
+ "multipart", use_range_x(r) ? "/x-" : "/",
+ "byteranges; boundary=", r->boundary,
+ NULL));
+ }
+
+ r->status = HTTP_PARTIAL_CONTENT;
+ r->range = range + 6;
+
+ return num_ranges;
+}
+
+/*
+ * Send the body of a response to the client.
+ */
+AP_DECLARE(apr_status_t) ap_send_fd(apr_file_t *fd, request_rec *r, apr_off_t offset,
+ apr_size_t len, apr_size_t *nbytes)
+{
+ apr_bucket_brigade *bb = NULL;
+ apr_bucket *b;
+ apr_status_t rv;
+
+ bb = apr_brigade_create(r->pool);
+ b = apr_bucket_file_create(fd, offset, len);
+ APR_BRIGADE_INSERT_TAIL(bb, b);
+
+ rv = ap_pass_brigade(r->output_filters, bb);
+ if (rv != APR_SUCCESS) {
+ *nbytes = 0; /* no way to tell how many were actually sent */
+ }
+ else {
+ *nbytes = len;
+ }
+
+ return rv;
+}
+
+#if APR_HAS_MMAP
+/* send data from an in-memory buffer */
+AP_DECLARE(size_t) ap_send_mmap(apr_mmap_t *mm, request_rec *r, size_t offset,
+ size_t length)
+{
+ apr_bucket_brigade *bb = NULL;
+ apr_bucket *b;
+
+ bb = apr_brigade_create(r->pool);
+ b = apr_bucket_mmap_create(mm, offset, length);
+ APR_BRIGADE_INSERT_TAIL(bb, b);
+ ap_pass_brigade(r->output_filters, bb);
+
+ return mm->size; /* XXX - change API to report apr_status_t? */
+}
+#endif /* APR_HAS_MMAP */
+
+typedef struct {
+ char *buf;
+ char *cur;
+ apr_size_t avail;
+} old_write_filter_ctx;
+
+AP_CORE_DECLARE_NONSTD(apr_status_t) ap_old_write_filter(
+ ap_filter_t *f, apr_bucket_brigade *bb)
+{
+ old_write_filter_ctx *ctx = f->ctx;
+
+ AP_DEBUG_ASSERT(ctx);
+
+ if (ctx->buf != NULL) {
+ apr_size_t nbyte = ctx->cur - ctx->buf;
+
+ if (nbyte != 0) {
+ /* whatever is coming down the pipe (we don't care), we
+ can simply insert our buffered data at the front and
+ pass the whole bundle down the chain. */
+ apr_bucket *b = apr_bucket_heap_create(ctx->buf, nbyte, 0, NULL);
+ APR_BRIGADE_INSERT_HEAD(bb, b);
+ ctx->buf = NULL;
+ }
+ }
+
+ return ap_pass_brigade(f->next, bb);
+}
+
+static apr_status_t flush_buffer(request_rec *r, old_write_filter_ctx *ctx,
+ const char *extra, apr_size_t extra_len)
+{
+ apr_bucket_brigade *bb = apr_brigade_create(r->pool);
+ apr_size_t nbyte = ctx->cur - ctx->buf;
+ apr_bucket *b = apr_bucket_heap_create(ctx->buf, nbyte, 0, NULL);
+
+ APR_BRIGADE_INSERT_TAIL(bb, b);
+ ctx->buf = NULL;
+
+ /* if there is extra data, then send that, too */
+ if (extra != NULL) {
+ b = apr_bucket_transient_create(extra, extra_len);
+ APR_BRIGADE_INSERT_TAIL(bb, b);
+ }
+
+ return ap_pass_brigade(r->output_filters, bb);
+}
+
+static apr_status_t buffer_output(request_rec *r,
+ const char *str, apr_size_t len)
+{
+ ap_filter_t *f;
+ old_write_filter_ctx *ctx;
+ apr_size_t amt;
+ apr_status_t status;
+
+ if (len == 0)
+ return APR_SUCCESS;
+
+ /* ### future optimization: record some flags in the request_rec to
+ ### say whether we've added our filter, and whether it is first. */
+
+ /* this will typically exit on the first test */
+ for (f = r->output_filters; f != NULL; f = f->next)
+ if (strcmp("OLD_WRITE", f->frec->name) == 0)
+ break;
+ if (f == NULL) {
+ /* our filter hasn't been added yet */
+ ctx = apr_pcalloc(r->pool, sizeof(*ctx));
+ ap_add_output_filter("OLD_WRITE", ctx, r, r->connection);
+ }
+
+ /* if the first filter is not our buffering filter, then we have to
+ deliver the content through the normal filter chain */
+ if (strcmp("OLD_WRITE", r->output_filters->frec->name) != 0) {
+ apr_bucket_brigade *bb = apr_brigade_create(r->pool);
+ apr_bucket *b = apr_bucket_transient_create(str, len);
+ APR_BRIGADE_INSERT_TAIL(bb, b);
+
+ return ap_pass_brigade(r->output_filters, bb);
+ }
+
+ /* grab the context from our filter */
+ ctx = r->output_filters->ctx;
+
+ /* if there isn't a buffer in the context yet, put one there. */
+ if (ctx->buf == NULL) {
+ /* use the heap so it will get free'd after being flushed */
+ ctx->avail = AP_MIN_BYTES_TO_WRITE;
+ ctx->buf = ctx->cur = malloc(ctx->avail);
+ }
+
+ /* squeeze the data into the existing buffer */
+ if (len <= ctx->avail) {
+ memcpy(ctx->cur, str, len);
+ ctx->cur += len;
+ if ((ctx->avail -= len) == 0)
+ return flush_buffer(r, ctx, NULL, 0);
+ return APR_SUCCESS;
+ }
+
+ /* the new content can't fit in the existing buffer */
+
+ if (len >= AP_MIN_BYTES_TO_WRITE) {
+ /* it is really big. send what we have, and the new stuff. */
+ return flush_buffer(r, ctx, str, len);
+ }
+
+ /* the new data is small. put some into the current buffer, flush it,
+ and then drop the remaining into a new buffer. */
+ amt = ctx->avail;
+ memcpy(ctx->cur, str, amt);
+ ctx->cur += amt;
+ ctx->avail = 0;
+ if ((status = flush_buffer(r, ctx, NULL, 0)) != APR_SUCCESS)
+ return status;
+
+ ctx->buf = malloc(AP_MIN_BYTES_TO_WRITE);
+ memcpy(ctx->buf, str + amt, len - amt);
+ ctx->cur = ctx->buf + (len - amt);
+ ctx->avail = AP_MIN_BYTES_TO_WRITE - (len - amt);
+
+ return APR_SUCCESS;
+}
+
+AP_DECLARE(int) ap_rputc(int c, request_rec *r)
+{
+ char c2 = (char)c;
+
+ if (r->connection->aborted) {
+ return -1;
+ }
+
+ if (buffer_output(r, &c2, 1) != APR_SUCCESS)
+ return -1;
+
+ return c;
+}
+
+AP_DECLARE(int) ap_rputs(const char *str, request_rec *r)
+{
+ apr_size_t len;
+
+ if (r->connection->aborted)
+ return -1;
+
+ if (buffer_output(r, str, len = strlen(str)) != APR_SUCCESS)
+ return -1;
+
+ return len;
+}
+
+AP_DECLARE(int) ap_rwrite(const void *buf, int nbyte, request_rec *r)
+{
+ if (r->connection->aborted)
+ return -1;
+
+ if (buffer_output(r, buf, nbyte) != APR_SUCCESS)
+ return -1;
+
+ return nbyte;
+}
+
+AP_DECLARE(int) ap_vrprintf(request_rec *r, const char *fmt, va_list va)
+{
+ char buf[4096];
+ apr_size_t written;
+
+ if (r->connection->aborted)
+ return -1;
+
+ /* ### fix this mechanism to allow more than 4K of output */
+ written = apr_vsnprintf(buf, sizeof(buf), fmt, va);
+ if (buffer_output(r, buf, written) != APR_SUCCESS)
+ return -1;
+
+ return written;
+}
+
+AP_DECLARE_NONSTD(int) ap_rprintf(request_rec *r, const char *fmt, ...)
+{
+ va_list va;
+ int n;
+
+ if (r->connection->aborted)
+ return -1;
+
+ va_start(va, fmt);
+ n = ap_vrprintf(r, fmt, va);
+ va_end(va);
+
+ return n;
+}
+
+AP_DECLARE_NONSTD(int) ap_rvputs(request_rec *r, ...)
+{
+ va_list va;
+ const char *s;
+ apr_size_t len;
+ apr_size_t written = 0;
+
+ if (r->connection->aborted)
+ return -1;
+
+ /* ### TODO: if the total output is large, put all the strings
+ ### into a single brigade, rather than flushing each time we
+ ### fill the buffer */
+ va_start(va, r);
+ while (1) {
+ s = va_arg(va, const char *);
+ if (s == NULL)
+ break;
+
+ len = strlen(s);
+ if (buffer_output(r, s, len) != APR_SUCCESS) {
+ return -1;
+ }
+
+ written += len;
+ }
+ va_end(va);
+
+ return written;
+}
+
+AP_DECLARE(int) ap_rflush(request_rec *r)
+{
+ apr_bucket_brigade *bb;
+ apr_bucket *b;
+
+ bb = apr_brigade_create(r->pool);
+ b = apr_bucket_flush_create();
+ APR_BRIGADE_INSERT_TAIL(bb, b);
+ if (ap_pass_brigade(r->output_filters, bb) != APR_SUCCESS)
+ return -1;
+ return 0;
+}
+
+AP_IMPLEMENT_HOOK_RUN_ALL(int,post_read_request,
+ (request_rec *r),(r),OK,DECLINED)
+AP_IMPLEMENT_HOOK_RUN_ALL(int,log_transaction,
+ (request_rec *r),(r),OK,DECLINED)
+AP_IMPLEMENT_HOOK_RUN_FIRST(const char *,http_method,
+ (const request_rec *r),(r),NULL)
+AP_IMPLEMENT_HOOK_RUN_FIRST(unsigned short,default_port,
+ (const request_rec *r),(r),0)
projects / thirdparty / apache / httpd.git / commitdiff
