2 * Copyright 2001-2022 The OpenSSL Project Authors. All Rights Reserved.
3 * Copyright Siemens AG 2018-2020
5 * Licensed under the Apache License 2.0 (the "License"). You may not use
6 * this file except in compliance with the License. You can obtain a copy
7 * in the file LICENSE in the source distribution or at
8 * https://www.openssl.org/source/license.html
11 #include "internal/e_os.h"
14 #include "crypto/ctype.h"
16 #include <openssl/asn1.h>
17 #include <openssl/evp.h>
18 #include <openssl/err.h>
19 #include <openssl/httperr.h>
20 #include <openssl/cmperr.h>
21 #include <openssl/buffer.h>
22 #include <openssl/http.h>
23 #include <openssl/trace.h>
24 #include "internal/sockets.h"
25 #include "internal/common.h" /* for ossl_assert() */
27 #define HTTP_PREFIX "HTTP/"
28 #define HTTP_VERSION_PATT "1." /* allow 1.x */
29 #define HTTP_VERSION_STR_LEN sizeof(HTTP_VERSION_PATT) /* == strlen("1.0") */
30 #define HTTP_PREFIX_VERSION HTTP_PREFIX""HTTP_VERSION_PATT
31 #define HTTP_1_0 HTTP_PREFIX_VERSION"0" /* "HTTP/1.0" */
32 #define HTTP_LINE1_MINLEN (sizeof(HTTP_PREFIX_VERSION "x 200\n") - 1)
33 #define HTTP_VERSION_MAX_REDIRECTIONS 50
35 #define HTTP_STATUS_CODE_OK 200
36 #define HTTP_STATUS_CODE_MOVED_PERMANENTLY 301
37 #define HTTP_STATUS_CODE_FOUND 302
39 /* Stateful HTTP request code, supporting blocking and non-blocking I/O */
41 /* Opaque HTTP request status structure */
43 struct ossl_http_req_ctx_st
{
44 int state
; /* Current I/O state */
45 unsigned char *buf
; /* Buffer to write request or read response */
46 int buf_size
; /* Buffer size */
47 int free_wbio
; /* wbio allocated internally, free with ctx */
48 BIO
*wbio
; /* BIO to write/send request to */
49 BIO
*rbio
; /* BIO to read/receive response from */
50 OSSL_HTTP_bio_cb_t upd_fn
; /* Optional BIO update callback used for TLS */
51 void *upd_arg
; /* Optional arg for update callback function */
52 int use_ssl
; /* Use HTTPS */
53 char *proxy
; /* Optional proxy name or URI */
54 char *server
; /* Optional server host name */
55 char *port
; /* Optional server port */
56 BIO
*mem
; /* Mem BIO holding request header or response */
57 BIO
*req
; /* BIO holding the request provided by caller */
58 int method_POST
; /* HTTP method is POST (else GET) */
59 char *expected_ct
; /* Optional expected Content-Type */
60 int expect_asn1
; /* Response must be ASN.1-encoded */
61 unsigned char *pos
; /* Current position sending data */
62 long len_to_send
; /* Number of bytes still to send */
63 size_t resp_len
; /* Length of response */
64 size_t max_resp_len
; /* Maximum length of response, or 0 */
65 int keep_alive
; /* Persistent conn. 0=no, 1=prefer, 2=require */
66 time_t max_time
; /* Maximum end time of current transfer, or 0 */
67 time_t max_total_time
; /* Maximum end time of total transfer, or 0 */
68 char *redirection_url
; /* Location obtained from HTTP status 301/302 */
73 #define OHS_NOREAD 0x1000 /* If set no reading should be performed */
74 #define OHS_ERROR (0 | OHS_NOREAD) /* Error condition */
75 #define OHS_ADD_HEADERS (1 | OHS_NOREAD) /* Adding header lines to request */
76 #define OHS_WRITE_INIT (2 | OHS_NOREAD) /* 1st call: ready to start send */
77 #define OHS_WRITE_HDR (3 | OHS_NOREAD) /* Request header being sent */
78 #define OHS_WRITE_REQ (4 | OHS_NOREAD) /* Request contents being sent */
79 #define OHS_FLUSH (5 | OHS_NOREAD) /* Request being flushed */
80 #define OHS_FIRSTLINE 1 /* First line of response being read */
81 #define OHS_HEADERS 2 /* MIME headers of response being read */
82 #define OHS_REDIRECT 3 /* MIME headers being read, expecting Location */
83 #define OHS_ASN1_HEADER 4 /* ASN1 sequence header (tag+length) being read */
84 #define OHS_ASN1_CONTENT 5 /* ASN1 content octets being read */
85 #define OHS_ASN1_DONE (6 | OHS_NOREAD) /* ASN1 content read completed */
86 #define OHS_STREAM (7 | OHS_NOREAD) /* HTTP content stream to be read */
88 /* Low-level HTTP API implementation */
90 OSSL_HTTP_REQ_CTX
*OSSL_HTTP_REQ_CTX_new(BIO
*wbio
, BIO
*rbio
, int buf_size
)
92 OSSL_HTTP_REQ_CTX
*rctx
;
94 if (wbio
== NULL
|| rbio
== NULL
) {
95 ERR_raise(ERR_LIB_HTTP
, ERR_R_PASSED_NULL_PARAMETER
);
99 if ((rctx
= OPENSSL_zalloc(sizeof(*rctx
))) == NULL
)
101 rctx
->state
= OHS_ERROR
;
102 rctx
->buf_size
= buf_size
> 0 ? buf_size
: OSSL_HTTP_DEFAULT_MAX_LINE_LEN
;
103 rctx
->buf
= OPENSSL_malloc(rctx
->buf_size
);
106 if (rctx
->buf
== NULL
) {
110 rctx
->max_resp_len
= OSSL_HTTP_DEFAULT_MAX_RESP_LEN
;
111 /* everything else is 0, e.g. rctx->len_to_send, or NULL, e.g. rctx->mem */
115 void OSSL_HTTP_REQ_CTX_free(OSSL_HTTP_REQ_CTX
*rctx
)
120 * Use BIO_free_all() because bio_update_fn may prepend or append to cbio.
121 * This also frees any (e.g., SSL/TLS) BIOs linked with bio and,
122 * like BIO_reset(bio), calls SSL_shutdown() to notify/alert the peer.
125 BIO_free_all(rctx
->wbio
);
126 /* do not free rctx->rbio */
129 OPENSSL_free(rctx
->buf
);
130 OPENSSL_free(rctx
->proxy
);
131 OPENSSL_free(rctx
->server
);
132 OPENSSL_free(rctx
->port
);
133 OPENSSL_free(rctx
->expected_ct
);
137 BIO
*OSSL_HTTP_REQ_CTX_get0_mem_bio(const OSSL_HTTP_REQ_CTX
*rctx
)
140 ERR_raise(ERR_LIB_HTTP
, ERR_R_PASSED_NULL_PARAMETER
);
146 size_t OSSL_HTTP_REQ_CTX_get_resp_len(const OSSL_HTTP_REQ_CTX
*rctx
)
149 ERR_raise(ERR_LIB_HTTP
, ERR_R_PASSED_NULL_PARAMETER
);
152 return rctx
->resp_len
;
155 void OSSL_HTTP_REQ_CTX_set_max_response_length(OSSL_HTTP_REQ_CTX
*rctx
,
159 ERR_raise(ERR_LIB_HTTP
, ERR_R_PASSED_NULL_PARAMETER
);
162 rctx
->max_resp_len
= len
!= 0 ? (size_t)len
: OSSL_HTTP_DEFAULT_MAX_RESP_LEN
;
166 * Create request line using |rctx| and |path| (or "/" in case |path| is NULL).
167 * Server name (and port) must be given if and only if plain HTTP proxy is used.
169 int OSSL_HTTP_REQ_CTX_set_request_line(OSSL_HTTP_REQ_CTX
*rctx
, int method_POST
,
170 const char *server
, const char *port
,
174 ERR_raise(ERR_LIB_HTTP
, ERR_R_PASSED_NULL_PARAMETER
);
178 if ((rctx
->mem
= BIO_new(BIO_s_mem())) == NULL
)
181 rctx
->method_POST
= method_POST
!= 0;
182 if (BIO_printf(rctx
->mem
, "%s ", rctx
->method_POST
? "POST" : "GET") <= 0)
185 if (server
!= NULL
) { /* HTTP (but not HTTPS) proxy is used */
187 * Section 5.1.2 of RFC 1945 states that the absoluteURI form is only
188 * allowed when using a proxy
190 if (BIO_printf(rctx
->mem
, OSSL_HTTP_PREFIX
"%s", server
) <= 0)
192 if (port
!= NULL
&& BIO_printf(rctx
->mem
, ":%s", port
) <= 0)
196 /* Make sure path includes a forward slash */
199 if (path
[0] != '/' && BIO_printf(rctx
->mem
, "/") <= 0)
202 * Add (the rest of) the path and the HTTP version,
203 * which is fixed to 1.0 for straightforward implementation of keep-alive
205 if (BIO_printf(rctx
->mem
, "%s "HTTP_1_0
"\r\n", path
) <= 0)
209 rctx
->state
= OHS_ADD_HEADERS
;
213 int OSSL_HTTP_REQ_CTX_add1_header(OSSL_HTTP_REQ_CTX
*rctx
,
214 const char *name
, const char *value
)
216 if (rctx
== NULL
|| name
== NULL
) {
217 ERR_raise(ERR_LIB_HTTP
, ERR_R_PASSED_NULL_PARAMETER
);
220 if (rctx
->mem
== NULL
) {
221 ERR_raise(ERR_LIB_HTTP
, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED
);
225 if (BIO_puts(rctx
->mem
, name
) <= 0)
228 if (BIO_write(rctx
->mem
, ": ", 2) != 2)
230 if (BIO_puts(rctx
->mem
, value
) <= 0)
233 return BIO_write(rctx
->mem
, "\r\n", 2) == 2;
236 int OSSL_HTTP_REQ_CTX_set_expected(OSSL_HTTP_REQ_CTX
*rctx
,
237 const char *content_type
, int asn1
,
238 int timeout
, int keep_alive
)
241 ERR_raise(ERR_LIB_HTTP
, ERR_R_PASSED_NULL_PARAMETER
);
245 && rctx
->state
!= OHS_ERROR
&& rctx
->state
!= OHS_ADD_HEADERS
) {
246 /* Cannot anymore set keep-alive in request header */
247 ERR_raise(ERR_LIB_HTTP
, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED
);
251 OPENSSL_free(rctx
->expected_ct
);
252 rctx
->expected_ct
= NULL
;
253 if (content_type
!= NULL
254 && (rctx
->expected_ct
= OPENSSL_strdup(content_type
)) == NULL
)
257 rctx
->expect_asn1
= asn1
;
259 rctx
->max_time
= timeout
> 0 ? time(NULL
) + timeout
: 0;
260 else /* take over any |overall_timeout| arg of OSSL_HTTP_open(), else 0 */
261 rctx
->max_time
= rctx
->max_total_time
;
262 rctx
->keep_alive
= keep_alive
;
266 static int set1_content(OSSL_HTTP_REQ_CTX
*rctx
,
267 const char *content_type
, BIO
*req
)
272 if (rctx
== NULL
|| (req
== NULL
&& content_type
!= NULL
)) {
273 ERR_raise(ERR_LIB_HTTP
, ERR_R_PASSED_NULL_PARAMETER
);
277 if (rctx
->keep_alive
!= 0
278 && !OSSL_HTTP_REQ_CTX_add1_header(rctx
, "Connection", "keep-alive"))
285 if (!rctx
->method_POST
) {
286 ERR_raise(ERR_LIB_HTTP
, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED
);
290 if (content_type
!= NULL
291 && BIO_printf(rctx
->mem
, "Content-Type: %s\r\n", content_type
) <= 0)
295 * BIO_CTRL_INFO yields the data length at least for memory BIOs, but for
296 * file-based BIOs it gives the current position, which is not what we need.
298 if (BIO_get_fp(req
, &fp
) == 1) {
299 fseek(fp
, 0, SEEK_END
);
301 fseek(fp
, 0, SEEK_SET
);
303 req_len
= BIO_ctrl(req
, BIO_CTRL_INFO
, 0, NULL
);
305 * Streaming BIOs likely will not support querying the size at all,
306 * and we assume we got a correct value if req_len > 0.
309 if ((fp
!= NULL
/* definitely correct req_len */ || req_len
> 0)
310 && BIO_printf(rctx
->mem
, "Content-Length: %ld\r\n", req_len
) < 0)
313 if (!BIO_up_ref(req
))
319 int OSSL_HTTP_REQ_CTX_set1_req(OSSL_HTTP_REQ_CTX
*rctx
, const char *content_type
,
320 const ASN1_ITEM
*it
, const ASN1_VALUE
*req
)
326 res
= (mem
= ASN1_item_i2d_mem_bio(it
, req
)) != NULL
;
327 res
= res
&& set1_content(rctx
, content_type
, mem
);
332 static int add1_headers(OSSL_HTTP_REQ_CTX
*rctx
,
333 const STACK_OF(CONF_VALUE
) *headers
, const char *host
)
336 int add_host
= host
!= NULL
&& *host
!= '\0';
339 for (i
= 0; i
< sk_CONF_VALUE_num(headers
); i
++) {
340 hdr
= sk_CONF_VALUE_value(headers
, i
);
341 if (add_host
&& OPENSSL_strcasecmp("host", hdr
->name
) == 0)
343 if (!OSSL_HTTP_REQ_CTX_add1_header(rctx
, hdr
->name
, hdr
->value
))
347 if (add_host
&& !OSSL_HTTP_REQ_CTX_add1_header(rctx
, "Host", host
))
352 /* Create OSSL_HTTP_REQ_CTX structure using the values provided. */
353 static OSSL_HTTP_REQ_CTX
*http_req_ctx_new(int free_wbio
, BIO
*wbio
, BIO
*rbio
,
354 OSSL_HTTP_bio_cb_t bio_update_fn
,
355 void *arg
, int use_ssl
,
357 const char *server
, const char *port
,
358 int buf_size
, int overall_timeout
)
360 OSSL_HTTP_REQ_CTX
*rctx
= OSSL_HTTP_REQ_CTX_new(wbio
, rbio
, buf_size
);
364 rctx
->free_wbio
= free_wbio
;
365 rctx
->upd_fn
= bio_update_fn
;
367 rctx
->use_ssl
= use_ssl
;
369 && (rctx
->proxy
= OPENSSL_strdup(proxy
)) == NULL
)
372 && (rctx
->server
= OPENSSL_strdup(server
)) == NULL
)
375 && (rctx
->port
= OPENSSL_strdup(port
)) == NULL
)
377 rctx
->max_total_time
=
378 overall_timeout
> 0 ? time(NULL
) + overall_timeout
: 0;
382 OSSL_HTTP_REQ_CTX_free(rctx
);
387 * Parse first HTTP response line. This should be like this: "HTTP/1.0 200 OK".
388 * We need to obtain the status code and (optional) informational message.
389 * Return any received HTTP response status code, or 0 on fatal error.
392 static int parse_http_line1(char *line
, int *found_keep_alive
)
395 char *code
, *reason
, *end
;
397 if (!CHECK_AND_SKIP_PREFIX(line
, HTTP_PREFIX_VERSION
))
399 /* above HTTP 1.0, connection persistence is the default */
400 *found_keep_alive
= *line
> '0';
402 /* Skip to first whitespace (past protocol info) */
403 for (code
= line
; *code
!= '\0' && !ossl_isspace(*code
); code
++)
408 /* Skip past whitespace to start of response code */
409 while (*code
!= '\0' && ossl_isspace(*code
))
414 /* Find end of response code: first whitespace after start of code */
415 for (reason
= code
; *reason
!= '\0' && !ossl_isspace(*reason
); reason
++)
421 /* Set end of response code and start of message */
424 /* Attempt to parse numeric code */
425 retcode
= strtoul(code
, &end
, 10);
429 /* Skip over any leading whitespace in message */
430 while (*reason
!= '\0' && ossl_isspace(*reason
))
433 if (*reason
!= '\0') {
435 * Finally zap any trailing whitespace in message (include CRLF)
438 /* chop any trailing whitespace from reason */
439 /* We know reason has a non-whitespace character so this is OK */
440 for (end
= reason
+ strlen(reason
) - 1; ossl_isspace(*end
); end
--)
445 case HTTP_STATUS_CODE_OK
:
446 case HTTP_STATUS_CODE_MOVED_PERMANENTLY
:
447 case HTTP_STATUS_CODE_FOUND
:
450 err
= HTTP_R_RECEIVED_ERROR
;
452 err
= HTTP_R_STATUS_CODE_UNSUPPORTED
;
454 ERR_raise_data(ERR_LIB_HTTP
, err
, "code=%s", code
);
456 ERR_raise_data(ERR_LIB_HTTP
, err
, "code=%s, reason=%s", code
,
462 for (i
= 0; i
< 60 && line
[i
] != '\0'; i
++)
463 if (!ossl_isprint(line
[i
]))
466 ERR_raise_data(ERR_LIB_HTTP
, HTTP_R_HEADER_PARSE_ERROR
, "content=%s", line
);
470 static int check_set_resp_len(OSSL_HTTP_REQ_CTX
*rctx
, size_t len
)
472 if (rctx
->max_resp_len
!= 0 && len
> rctx
->max_resp_len
)
473 ERR_raise_data(ERR_LIB_HTTP
, HTTP_R_MAX_RESP_LEN_EXCEEDED
,
474 "length=%zu, max=%zu", len
, rctx
->max_resp_len
);
475 if (rctx
->resp_len
!= 0 && rctx
->resp_len
!= len
)
476 ERR_raise_data(ERR_LIB_HTTP
, HTTP_R_INCONSISTENT_CONTENT_LENGTH
,
477 "ASN.1 length=%zu, Content-Length=%zu",
478 len
, rctx
->resp_len
);
479 rctx
->resp_len
= len
;
483 static int may_still_retry(time_t max_time
, int *ptimeout
)
485 time_t time_diff
, now
= time(NULL
);
488 if (max_time
< now
) {
489 ERR_raise(ERR_LIB_HTTP
, HTTP_R_RETRY_TIMEOUT
);
492 time_diff
= max_time
- now
;
493 *ptimeout
= time_diff
> INT_MAX
? INT_MAX
: (int)time_diff
;
499 * Try exchanging request and response via HTTP on (non-)blocking BIO in rctx.
500 * Returns 1 on success, 0 on error or redirection, -1 on BIO_should_retry.
502 int OSSL_HTTP_REQ_CTX_nbio(OSSL_HTTP_REQ_CTX
*rctx
)
504 int i
, found_expected_ct
= 0, found_keep_alive
= 0;
505 int found_text_ct
= 0;
508 const unsigned char *p
;
509 char *buf
, *key
, *value
, *line_end
= NULL
;
512 ERR_raise(ERR_LIB_HTTP
, ERR_R_PASSED_NULL_PARAMETER
);
515 if (rctx
->mem
== NULL
|| rctx
->wbio
== NULL
|| rctx
->rbio
== NULL
) {
516 ERR_raise(ERR_LIB_HTTP
, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED
);
520 rctx
->redirection_url
= NULL
;
522 buf
= (char *)rctx
->buf
;
523 if ((rctx
->state
& OHS_NOREAD
) == 0) {
524 if (rctx
->expect_asn1
) {
525 n
= BIO_read(rctx
->rbio
, rctx
->buf
, rctx
->buf_size
);
527 (void)ERR_set_mark();
528 n
= BIO_gets(rctx
->rbio
, buf
, rctx
->buf_size
);
529 if (n
== -2) { /* some BIOs, such as SSL, do not support "gets" */
530 (void)ERR_pop_to_mark();
531 n
= BIO_get_line(rctx
->rbio
, buf
, rctx
->buf_size
);
533 (void)ERR_clear_last_mark();
537 if (BIO_should_retry(rctx
->rbio
))
539 ERR_raise(ERR_LIB_HTTP
, HTTP_R_FAILED_READING_DATA
);
543 /* Write data to memory BIO */
544 if (BIO_write(rctx
->mem
, rctx
->buf
, n
) != n
)
548 switch (rctx
->state
) {
549 case OHS_ADD_HEADERS
:
550 /* Last operation was adding headers: need a final \r\n */
551 if (BIO_write(rctx
->mem
, "\r\n", 2) != 2) {
552 rctx
->state
= OHS_ERROR
;
555 rctx
->state
= OHS_WRITE_INIT
;
559 rctx
->len_to_send
= BIO_get_mem_data(rctx
->mem
, &rctx
->pos
);
560 rctx
->state
= OHS_WRITE_HDR
;
561 if (OSSL_TRACE_ENABLED(HTTP
))
562 OSSL_TRACE(HTTP
, "Sending request header:\n");
566 /* Copy some chunk of data from rctx->mem to rctx->wbio */
568 /* Copy some chunk of data from rctx->req to rctx->wbio */
570 if (rctx
->len_to_send
> 0) {
571 if (OSSL_TRACE_ENABLED(HTTP
)
572 && rctx
->state
== OHS_WRITE_HDR
&& rctx
->len_to_send
<= INT_MAX
)
573 OSSL_TRACE2(HTTP
, "%.*s", (int)rctx
->len_to_send
, rctx
->pos
);
575 i
= BIO_write(rctx
->wbio
, rctx
->pos
, rctx
->len_to_send
);
577 if (BIO_should_retry(rctx
->wbio
))
579 rctx
->state
= OHS_ERROR
;
583 rctx
->len_to_send
-= i
;
586 if (rctx
->state
== OHS_WRITE_HDR
) {
587 (void)BIO_reset(rctx
->mem
);
588 rctx
->state
= OHS_WRITE_REQ
;
590 if (rctx
->req
!= NULL
&& !BIO_eof(rctx
->req
)) {
591 n
= BIO_read(rctx
->req
, rctx
->buf
, rctx
->buf_size
);
593 if (BIO_should_retry(rctx
->req
))
595 ERR_raise(ERR_LIB_HTTP
, HTTP_R_FAILED_READING_DATA
);
598 rctx
->pos
= rctx
->buf
;
599 rctx
->len_to_send
= n
;
602 rctx
->state
= OHS_FLUSH
;
607 i
= BIO_flush(rctx
->wbio
);
610 rctx
->state
= OHS_FIRSTLINE
;
614 if (BIO_should_retry(rctx
->wbio
))
617 rctx
->state
= OHS_ERROR
;
627 /* Attempt to read a line in */
630 * Due to strange memory BIO behavior with BIO_gets we have to check
631 * there's a complete line in there before calling BIO_gets or we'll
632 * just get a partial read.
634 n
= BIO_get_mem_data(rctx
->mem
, &p
);
635 if (n
<= 0 || memchr(p
, '\n', n
) == 0) {
636 if (n
>= rctx
->buf_size
) {
637 rctx
->state
= OHS_ERROR
;
642 n
= BIO_gets(rctx
->mem
, buf
, rctx
->buf_size
);
645 if (BIO_should_retry(rctx
->mem
))
647 rctx
->state
= OHS_ERROR
;
651 /* Don't allow excessive lines */
652 if (n
== rctx
->buf_size
) {
653 ERR_raise(ERR_LIB_HTTP
, HTTP_R_RESPONSE_LINE_TOO_LONG
);
654 rctx
->state
= OHS_ERROR
;
658 /* dump all response header lines */
659 if (OSSL_TRACE_ENABLED(HTTP
)) {
660 if (rctx
->state
== OHS_FIRSTLINE
)
661 OSSL_TRACE(HTTP
, "Received response header:\n");
662 OSSL_TRACE1(HTTP
, "%s", buf
);
666 if (rctx
->state
== OHS_FIRSTLINE
) {
667 switch (parse_http_line1(buf
, &found_keep_alive
)) {
668 case HTTP_STATUS_CODE_OK
:
669 rctx
->state
= OHS_HEADERS
;
671 case HTTP_STATUS_CODE_MOVED_PERMANENTLY
:
672 case HTTP_STATUS_CODE_FOUND
: /* i.e., moved temporarily */
673 if (!rctx
->method_POST
) { /* method is GET */
674 rctx
->state
= OHS_REDIRECT
;
677 ERR_raise(ERR_LIB_HTTP
, HTTP_R_REDIRECTION_NOT_ENABLED
);
678 /* redirection is not supported/recommended for POST */
681 rctx
->state
= OHS_ERROR
;
686 value
= strchr(key
, ':');
689 while (ossl_isspace(*value
))
691 line_end
= strchr(value
, '\r');
692 if (line_end
== NULL
)
693 line_end
= strchr(value
, '\n');
694 if (line_end
!= NULL
)
697 if (value
!= NULL
&& line_end
!= NULL
) {
698 if (rctx
->state
== OHS_REDIRECT
699 && OPENSSL_strcasecmp(key
, "Location") == 0) {
700 rctx
->redirection_url
= value
;
703 if (OPENSSL_strcasecmp(key
, "Content-Type") == 0) {
704 if (rctx
->state
== OHS_HEADERS
705 && rctx
->expected_ct
!= NULL
) {
706 if (OPENSSL_strcasecmp(rctx
->expected_ct
, value
) != 0) {
707 ERR_raise_data(ERR_LIB_HTTP
,
708 HTTP_R_UNEXPECTED_CONTENT_TYPE
,
709 "expected=%s, actual=%s",
710 rctx
->expected_ct
, value
);
713 found_expected_ct
= 1;
715 if (OPENSSL_strncasecmp(value
, "text/", 5) == 0)
719 /* https://tools.ietf.org/html/rfc7230#section-6.3 Persistence */
720 if (OPENSSL_strcasecmp(key
, "Connection") == 0) {
721 if (OPENSSL_strcasecmp(value
, "keep-alive") == 0)
722 found_keep_alive
= 1;
723 else if (OPENSSL_strcasecmp(value
, "close") == 0)
724 found_keep_alive
= 0;
725 } else if (OPENSSL_strcasecmp(key
, "Content-Length") == 0) {
726 resp_len
= (size_t)strtoul(value
, &line_end
, 10);
727 if (line_end
== value
|| *line_end
!= '\0') {
728 ERR_raise_data(ERR_LIB_HTTP
,
729 HTTP_R_ERROR_PARSING_CONTENT_LENGTH
,
733 if (!check_set_resp_len(rctx
, resp_len
))
738 /* Look for blank line indicating end of headers */
739 for (p
= rctx
->buf
; *p
!= '\0'; p
++) {
740 if (*p
!= '\r' && *p
!= '\n')
743 if (*p
!= '\0') /* not end of headers */
746 if (rctx
->keep_alive
!= 0 /* do not let server initiate keep_alive */
747 && !found_keep_alive
/* otherwise there is no change */) {
748 if (rctx
->keep_alive
== 2) {
749 rctx
->keep_alive
= 0;
750 ERR_raise(ERR_LIB_HTTP
, HTTP_R_SERVER_CANCELED_CONNECTION
);
753 rctx
->keep_alive
= 0;
756 if (rctx
->state
== OHS_ERROR
) {
757 if (OSSL_TRACE_ENABLED(HTTP
)
758 && found_text_ct
&& BIO_get_mem_data(rctx
->mem
, &p
) > 0)
759 OSSL_TRACE1(HTTP
, "%s", p
);
763 if (rctx
->expected_ct
!= NULL
&& !found_expected_ct
) {
764 ERR_raise_data(ERR_LIB_HTTP
, HTTP_R_MISSING_CONTENT_TYPE
,
765 "expected=%s", rctx
->expected_ct
);
768 if (rctx
->state
== OHS_REDIRECT
) {
769 /* http status code indicated redirect but there was no Location */
770 ERR_raise(ERR_LIB_HTTP
, HTTP_R_MISSING_REDIRECT_LOCATION
);
774 if (!rctx
->expect_asn1
) {
775 rctx
->state
= OHS_STREAM
;
779 rctx
->state
= OHS_ASN1_HEADER
;
782 case OHS_ASN1_HEADER
:
784 * Now reading ASN1 header: can read at least 2 bytes which is enough
785 * for ASN1 SEQUENCE header and either length field or at least the
786 * length of the length field.
788 n
= BIO_get_mem_data(rctx
->mem
, &p
);
792 /* Check it is an ASN1 SEQUENCE */
793 if (*p
++ != (V_ASN1_SEQUENCE
| V_ASN1_CONSTRUCTED
)) {
794 ERR_raise(ERR_LIB_HTTP
, HTTP_R_MISSING_ASN1_ENCODING
);
798 /* Check out length field */
799 if ((*p
& 0x80) != 0) {
801 * If MSB set on initial length octet we can now always read 6
802 * octets: make sure we have them.
807 /* Not NDEF or excessive length */
808 if (n
== 0 || (n
> 4)) {
809 ERR_raise(ERR_LIB_HTTP
, HTTP_R_ERROR_PARSING_ASN1_LENGTH
);
814 for (i
= 0; i
< n
; i
++) {
822 if (!check_set_resp_len(rctx
, resp_len
))
825 rctx
->state
= OHS_ASN1_CONTENT
;
828 case OHS_ASN1_CONTENT
:
830 n
= BIO_get_mem_data(rctx
->mem
, NULL
);
831 if (n
< 0 || (size_t)n
< rctx
->resp_len
)
834 rctx
->state
= OHS_ASN1_DONE
;
839 int OSSL_HTTP_REQ_CTX_nbio_d2i(OSSL_HTTP_REQ_CTX
*rctx
,
840 ASN1_VALUE
**pval
, const ASN1_ITEM
*it
)
842 const unsigned char *p
;
846 if ((rv
= OSSL_HTTP_REQ_CTX_nbio(rctx
)) != 1)
848 *pval
= ASN1_item_d2i(NULL
, &p
, BIO_get_mem_data(rctx
->mem
, &p
), it
);
849 return *pval
!= NULL
;
853 #ifndef OPENSSL_NO_SOCK
855 /* set up a new connection BIO, to HTTP server or to HTTP(S) proxy if given */
856 static BIO
*http_new_bio(const char *server
/* optionally includes ":port" */,
857 const char *server_port
/* explicit server port */,
859 const char *proxy
/* optionally includes ":port" */,
860 const char *proxy_port
/* explicit proxy port */)
862 const char *host
= server
;
863 const char *port
= server_port
;
866 if (!ossl_assert(server
!= NULL
))
874 if (port
== NULL
&& strchr(host
, ':') == NULL
)
875 port
= use_ssl
? OSSL_HTTPS_PORT
: OSSL_HTTP_PORT
;
877 cbio
= BIO_new_connect(host
/* optionally includes ":port" */);
881 (void)BIO_set_conn_port(cbio
, port
);
886 #endif /* OPENSSL_NO_SOCK */
888 /* Exchange request and response via HTTP on (non-)blocking BIO */
889 BIO
*OSSL_HTTP_REQ_CTX_exchange(OSSL_HTTP_REQ_CTX
*rctx
)
894 ERR_raise(ERR_LIB_HTTP
, ERR_R_PASSED_NULL_PARAMETER
);
899 rv
= OSSL_HTTP_REQ_CTX_nbio(rctx
);
902 /* BIO_should_retry was true */
903 /* will not actually wait if rctx->max_time == 0 */
904 if (BIO_wait(rctx
->rbio
, rctx
->max_time
, 100 /* milliseconds */) <= 0)
909 if (rctx
->redirection_url
== NULL
) { /* an error occurred */
910 if (rctx
->len_to_send
> 0)
911 ERR_raise(ERR_LIB_HTTP
, HTTP_R_ERROR_SENDING
);
913 ERR_raise(ERR_LIB_HTTP
, HTTP_R_ERROR_RECEIVING
);
917 return rctx
->state
== OHS_STREAM
? rctx
->rbio
: rctx
->mem
;
920 int OSSL_HTTP_is_alive(const OSSL_HTTP_REQ_CTX
*rctx
)
922 return rctx
!= NULL
&& rctx
->keep_alive
!= 0;
925 /* High-level HTTP API implementation */
927 /* Initiate an HTTP session using bio, else use given server, proxy, etc. */
928 OSSL_HTTP_REQ_CTX
*OSSL_HTTP_open(const char *server
, const char *port
,
929 const char *proxy
, const char *no_proxy
,
930 int use_ssl
, BIO
*bio
, BIO
*rbio
,
931 OSSL_HTTP_bio_cb_t bio_update_fn
, void *arg
,
932 int buf_size
, int overall_timeout
)
934 BIO
*cbio
; /* == bio if supplied, used as connection BIO if rbio is NULL */
935 OSSL_HTTP_REQ_CTX
*rctx
= NULL
;
937 if (use_ssl
&& bio_update_fn
== NULL
) {
938 ERR_raise(ERR_LIB_HTTP
, HTTP_R_TLS_NOT_ENABLED
);
941 if (rbio
!= NULL
&& (bio
== NULL
|| bio_update_fn
!= NULL
)) {
942 ERR_raise(ERR_LIB_HTTP
, ERR_R_PASSED_INVALID_ARGUMENT
);
948 if (proxy
!= NULL
|| no_proxy
!= NULL
) {
949 ERR_raise(ERR_LIB_HTTP
, ERR_R_PASSED_INVALID_ARGUMENT
);
953 #ifndef OPENSSL_NO_SOCK
954 char *proxy_host
= NULL
, *proxy_port
= NULL
;
956 if (server
== NULL
) {
957 ERR_raise(ERR_LIB_HTTP
, ERR_R_PASSED_NULL_PARAMETER
);
960 if (port
!= NULL
&& *port
== '\0')
962 if (port
== NULL
&& strchr(server
, ':') == NULL
)
963 port
= use_ssl
? OSSL_HTTPS_PORT
: OSSL_HTTP_PORT
;
964 proxy
= OSSL_HTTP_adapt_proxy(proxy
, no_proxy
, server
, use_ssl
);
966 && !OSSL_HTTP_parse_url(proxy
, NULL
/* use_ssl */, NULL
/* user */,
967 &proxy_host
, &proxy_port
, NULL
/* num */,
968 NULL
/* path */, NULL
, NULL
))
970 cbio
= http_new_bio(server
, port
, use_ssl
, proxy_host
, proxy_port
);
971 OPENSSL_free(proxy_host
);
972 OPENSSL_free(proxy_port
);
976 ERR_raise(ERR_LIB_HTTP
, HTTP_R_SOCK_NOT_SUPPORTED
);
981 (void)ERR_set_mark(); /* prepare removing any spurious libssl errors */
982 if (rbio
== NULL
&& BIO_do_connect_retry(cbio
, overall_timeout
, -1) <= 0) {
983 if (bio
== NULL
) /* cbio was not provided by caller */
987 /* now overall_timeout is guaranteed to be >= 0 */
989 /* adapt in order to fix callback design flaw, see #17088 */
990 /* callback can be used to wrap or prepend TLS session */
991 if (bio_update_fn
!= NULL
) {
992 BIO
*orig_bio
= cbio
;
994 cbio
= (*bio_update_fn
)(cbio
, arg
, 1 /* connect */, use_ssl
!= 0);
996 if (bio
== NULL
) /* cbio was not provided by caller */
997 BIO_free_all(orig_bio
);
1002 rctx
= http_req_ctx_new(bio
== NULL
, cbio
, rbio
!= NULL
? rbio
: cbio
,
1003 bio_update_fn
, arg
, use_ssl
, proxy
, server
, port
,
1004 buf_size
, overall_timeout
);
1008 /* remove any spurious error queue entries by ssl_add_cert_chain() */
1009 (void)ERR_pop_to_mark();
1011 (void)ERR_clear_last_mark();
1016 int OSSL_HTTP_set1_request(OSSL_HTTP_REQ_CTX
*rctx
, const char *path
,
1017 const STACK_OF(CONF_VALUE
) *headers
,
1018 const char *content_type
, BIO
*req
,
1019 const char *expected_content_type
, int expect_asn1
,
1020 size_t max_resp_len
, int timeout
, int keep_alive
)
1025 ERR_raise(ERR_LIB_HTTP
, ERR_R_PASSED_NULL_PARAMETER
);
1028 use_http_proxy
= rctx
->proxy
!= NULL
&& !rctx
->use_ssl
;
1029 if (use_http_proxy
&& rctx
->server
== NULL
) {
1030 ERR_raise(ERR_LIB_HTTP
, ERR_R_PASSED_INVALID_ARGUMENT
);
1033 rctx
->max_resp_len
= max_resp_len
; /* allows for 0: indefinite */
1035 return OSSL_HTTP_REQ_CTX_set_request_line(rctx
, req
!= NULL
,
1036 use_http_proxy
? rctx
->server
1037 : NULL
, rctx
->port
, path
)
1038 && add1_headers(rctx
, headers
, rctx
->server
)
1039 && OSSL_HTTP_REQ_CTX_set_expected(rctx
, expected_content_type
,
1040 expect_asn1
, timeout
, keep_alive
)
1041 && set1_content(rctx
, content_type
, req
);
1045 * Exchange single HTTP request and response according to rctx.
1046 * If rctx->method_POST then use POST, else use GET and ignore content_type.
1047 * The redirection_url output (freed by caller) parameter is used only for GET.
1049 BIO
*OSSL_HTTP_exchange(OSSL_HTTP_REQ_CTX
*rctx
, char **redirection_url
)
1054 ERR_raise(ERR_LIB_HTTP
, ERR_R_PASSED_NULL_PARAMETER
);
1058 if (redirection_url
!= NULL
)
1059 *redirection_url
= NULL
; /* do this beforehand to prevent dbl free */
1061 resp
= OSSL_HTTP_REQ_CTX_exchange(rctx
);
1063 if (rctx
->redirection_url
!= NULL
) {
1064 if (redirection_url
== NULL
)
1065 ERR_raise(ERR_LIB_HTTP
, HTTP_R_REDIRECTION_NOT_ENABLED
);
1067 /* may be NULL if out of memory: */
1068 *redirection_url
= OPENSSL_strdup(rctx
->redirection_url
);
1071 unsigned long err
= ERR_peek_error();
1072 int lib
= ERR_GET_LIB(err
);
1073 int reason
= ERR_GET_REASON(err
);
1075 if (lib
== ERR_LIB_SSL
|| lib
== ERR_LIB_HTTP
1076 || (lib
== ERR_LIB_BIO
&& reason
== BIO_R_CONNECT_TIMEOUT
)
1077 || (lib
== ERR_LIB_BIO
&& reason
== BIO_R_CONNECT_ERROR
)
1078 #ifndef OPENSSL_NO_CMP
1079 || (lib
== ERR_LIB_CMP
1080 && reason
== CMP_R_POTENTIALLY_INVALID_CERTIFICATE
)
1083 if (rctx
->server
!= NULL
) {
1084 BIO_snprintf(buf
, sizeof(buf
), "server=http%s://%s%s%s",
1085 rctx
->use_ssl
? "s" : "", rctx
->server
,
1086 rctx
->port
!= NULL
? ":" : "",
1087 rctx
->port
!= NULL
? rctx
->port
: "");
1088 ERR_add_error_data(1, buf
);
1090 if (rctx
->proxy
!= NULL
)
1091 ERR_add_error_data(2, " proxy=", rctx
->proxy
);
1093 BIO_snprintf(buf
, sizeof(buf
), " peer has disconnected%s",
1094 rctx
->use_ssl
? " violating the protocol" :
1095 ", likely because it requires the use of TLS");
1096 ERR_add_error_data(1, buf
);
1102 if (resp
!= NULL
&& !BIO_up_ref(resp
))
1107 static int redirection_ok(int n_redir
, const char *old_url
, const char *new_url
)
1109 if (n_redir
>= HTTP_VERSION_MAX_REDIRECTIONS
) {
1110 ERR_raise(ERR_LIB_HTTP
, HTTP_R_TOO_MANY_REDIRECTIONS
);
1113 if (*new_url
== '/') /* redirection to same server => same protocol */
1115 if (HAS_PREFIX(old_url
, OSSL_HTTPS_NAME
":") &&
1116 !HAS_PREFIX(new_url
, OSSL_HTTPS_NAME
":")) {
1117 ERR_raise(ERR_LIB_HTTP
, HTTP_R_REDIRECTION_FROM_HTTPS_TO_HTTP
);
1123 /* Get data via HTTP from server at given URL, potentially with redirection */
1124 BIO
*OSSL_HTTP_get(const char *url
, const char *proxy
, const char *no_proxy
,
1125 BIO
*bio
, BIO
*rbio
,
1126 OSSL_HTTP_bio_cb_t bio_update_fn
, void *arg
,
1127 int buf_size
, const STACK_OF(CONF_VALUE
) *headers
,
1128 const char *expected_ct
, int expect_asn1
,
1129 size_t max_resp_len
, int timeout
)
1131 char *current_url
, *redirection_url
= NULL
;
1137 OSSL_HTTP_REQ_CTX
*rctx
;
1139 time_t max_time
= timeout
> 0 ? time(NULL
) + timeout
: 0;
1142 ERR_raise(ERR_LIB_HTTP
, ERR_R_PASSED_NULL_PARAMETER
);
1145 if ((current_url
= OPENSSL_strdup(url
)) == NULL
)
1149 if (!OSSL_HTTP_parse_url(current_url
, &use_ssl
, NULL
/* user */, &host
,
1150 &port
, NULL
/* port_num */, &path
, NULL
, NULL
))
1153 rctx
= OSSL_HTTP_open(host
, port
, proxy
, no_proxy
,
1154 use_ssl
, bio
, rbio
, bio_update_fn
, arg
,
1158 if (!OSSL_HTTP_set1_request(rctx
, path
, headers
,
1159 NULL
/* content_type */,
1161 expected_ct
, expect_asn1
, max_resp_len
,
1162 -1 /* use same max time (timeout) */,
1163 0 /* no keep_alive */))
1164 OSSL_HTTP_REQ_CTX_free(rctx
);
1166 resp
= OSSL_HTTP_exchange(rctx
, &redirection_url
);
1169 if (resp
== NULL
&& redirection_url
!= NULL
) {
1170 if (redirection_ok(++n_redirs
, current_url
, redirection_url
)
1171 && may_still_retry(max_time
, &timeout
)) {
1172 (void)BIO_reset(bio
);
1173 OPENSSL_free(current_url
);
1174 current_url
= redirection_url
;
1175 if (*redirection_url
== '/') { /* redirection to same server */
1176 path
= OPENSSL_strdup(redirection_url
);
1180 (void)OSSL_HTTP_close(rctx
, 1);
1182 OPENSSL_free(current_url
);
1189 (void)OSSL_HTTP_close(rctx
, 1);
1192 /* if redirection not allowed, ignore it */
1193 OPENSSL_free(redirection_url
);
1197 if (!OSSL_HTTP_close(rctx
, resp
!= NULL
)) {
1203 OPENSSL_free(current_url
);
1207 /* Exchange request and response over a connection managed via |prctx| */
1208 BIO
*OSSL_HTTP_transfer(OSSL_HTTP_REQ_CTX
**prctx
,
1209 const char *server
, const char *port
,
1210 const char *path
, int use_ssl
,
1211 const char *proxy
, const char *no_proxy
,
1212 BIO
*bio
, BIO
*rbio
,
1213 OSSL_HTTP_bio_cb_t bio_update_fn
, void *arg
,
1214 int buf_size
, const STACK_OF(CONF_VALUE
) *headers
,
1215 const char *content_type
, BIO
*req
,
1216 const char *expected_ct
, int expect_asn1
,
1217 size_t max_resp_len
, int timeout
, int keep_alive
)
1219 OSSL_HTTP_REQ_CTX
*rctx
= prctx
== NULL
? NULL
: *prctx
;
1223 rctx
= OSSL_HTTP_open(server
, port
, proxy
, no_proxy
,
1224 use_ssl
, bio
, rbio
, bio_update_fn
, arg
,
1226 timeout
= -1; /* Already set during opening the connection */
1229 if (OSSL_HTTP_set1_request(rctx
, path
, headers
, content_type
, req
,
1230 expected_ct
, expect_asn1
,
1231 max_resp_len
, timeout
, keep_alive
))
1232 resp
= OSSL_HTTP_exchange(rctx
, NULL
);
1233 if (resp
== NULL
|| !OSSL_HTTP_is_alive(rctx
)) {
1234 if (!OSSL_HTTP_close(rctx
, resp
!= NULL
)) {
1246 int OSSL_HTTP_close(OSSL_HTTP_REQ_CTX
*rctx
, int ok
)
1251 /* callback can be used to finish TLS session and free its BIO */
1252 if (rctx
!= NULL
&& rctx
->upd_fn
!= NULL
) {
1253 wbio
= (*rctx
->upd_fn
)(rctx
->wbio
, rctx
->upd_arg
,
1254 0 /* disconnect */, ok
);
1259 OSSL_HTTP_REQ_CTX_free(rctx
);
1263 /* BASE64 encoder used for encoding basic proxy authentication credentials */
1264 static char *base64encode(const void *buf
, size_t len
)
1270 /* Calculate size of encoded data */
1275 out
= OPENSSL_malloc(outl
+ 1);
1279 i
= EVP_EncodeBlock((unsigned char *)out
, buf
, len
);
1280 if (!ossl_assert(0 <= i
&& (size_t)i
<= outl
)) {
1288 * Promote the given connection BIO using the CONNECT method for a TLS proxy.
1289 * This is typically called by an app, so bio_err and prog are used unless NULL
1290 * to print additional diagnostic information in a user-oriented way.
1292 int OSSL_HTTP_proxy_connect(BIO
*bio
, const char *server
, const char *port
,
1293 const char *proxyuser
, const char *proxypass
,
1294 int timeout
, BIO
*bio_err
, const char *prog
)
1297 #define BUF_SIZE (8 * 1024)
1298 char *mbuf
= OPENSSL_malloc(BUF_SIZE
);
1302 BIO
*fbio
= BIO_new(BIO_f_buffer());
1304 time_t max_time
= timeout
> 0 ? time(NULL
) + timeout
: 0;
1306 if (bio
== NULL
|| server
== NULL
1307 || (bio_err
!= NULL
&& prog
== NULL
)) {
1308 ERR_raise(ERR_LIB_HTTP
, ERR_R_PASSED_NULL_PARAMETER
);
1311 if (port
== NULL
|| *port
== '\0')
1312 port
= OSSL_HTTPS_PORT
;
1314 if (mbuf
== NULL
|| fbio
== NULL
) {
1315 BIO_printf(bio_err
/* may be NULL */, "%s: out of memory", prog
);
1318 BIO_push(fbio
, bio
);
1320 BIO_printf(fbio
, "CONNECT %s:%s "HTTP_1_0
"\r\n", server
, port
);
1323 * Workaround for broken proxies which would otherwise close
1324 * the connection when entering tunnel mode (e.g., Squid 2.6)
1326 BIO_printf(fbio
, "Proxy-Connection: Keep-Alive\r\n");
1328 /* Support for basic (base64) proxy authentication */
1329 if (proxyuser
!= NULL
) {
1330 size_t len
= strlen(proxyuser
) + 1;
1331 char *proxyauth
, *proxyauthenc
= NULL
;
1333 if (proxypass
!= NULL
)
1334 len
+= strlen(proxypass
);
1335 proxyauth
= OPENSSL_malloc(len
+ 1);
1336 if (proxyauth
== NULL
)
1338 if (BIO_snprintf(proxyauth
, len
+ 1, "%s:%s", proxyuser
,
1339 proxypass
!= NULL
? proxypass
: "") != (int)len
)
1341 proxyauthenc
= base64encode(proxyauth
, len
);
1342 if (proxyauthenc
!= NULL
) {
1343 BIO_printf(fbio
, "Proxy-Authorization: Basic %s\r\n", proxyauthenc
);
1344 OPENSSL_clear_free(proxyauthenc
, strlen(proxyauthenc
));
1347 OPENSSL_clear_free(proxyauth
, len
);
1348 if (proxyauthenc
== NULL
)
1352 /* Terminate the HTTP CONNECT request */
1353 BIO_printf(fbio
, "\r\n");
1356 if (BIO_flush(fbio
) != 0)
1358 /* potentially needs to be retried if BIO is non-blocking */
1359 if (!BIO_should_retry(fbio
))
1364 /* will not actually wait if timeout == 0 */
1365 rv
= BIO_wait(fbio
, max_time
, 100 /* milliseconds */);
1367 BIO_printf(bio_err
, "%s: HTTP CONNECT %s\n", prog
,
1368 rv
== 0 ? "timed out" : "failed waiting for data");
1373 * The first line is the HTTP response.
1374 * According to RFC 7230, it is formatted exactly like this:
1375 * HTTP/d.d ddd reason text\r\n
1377 read_len
= BIO_gets(fbio
, mbuf
, BUF_SIZE
);
1378 /* the BIO may not block, so we must wait for the 1st line to come in */
1379 if (read_len
< (int)HTTP_LINE1_MINLEN
)
1382 /* Check for HTTP/1.x */
1384 if (!CHECK_AND_SKIP_PREFIX(mbufp
, HTTP_PREFIX
)) {
1385 ERR_raise(ERR_LIB_HTTP
, HTTP_R_HEADER_PARSE_ERROR
);
1386 BIO_printf(bio_err
, "%s: HTTP CONNECT failed, non-HTTP response\n",
1388 /* Wrong protocol, not even HTTP, so stop reading headers */
1391 if (!HAS_PREFIX(mbufp
, HTTP_VERSION_PATT
)) {
1392 ERR_raise(ERR_LIB_HTTP
, HTTP_R_RECEIVED_WRONG_HTTP_VERSION
);
1394 "%s: HTTP CONNECT failed, bad HTTP version %.*s\n",
1395 prog
, (int)HTTP_VERSION_STR_LEN
, mbufp
);
1398 mbufp
+= HTTP_VERSION_STR_LEN
;
1400 /* RFC 7231 4.3.6: any 2xx status code is valid */
1401 if (!HAS_PREFIX(mbufp
, " 2")) {
1402 if (ossl_isspace(*mbufp
))
1404 /* chop any trailing whitespace */
1405 while (read_len
> 0 && ossl_isspace(mbuf
[read_len
- 1]))
1407 mbuf
[read_len
] = '\0';
1408 ERR_raise_data(ERR_LIB_HTTP
, HTTP_R_CONNECT_FAILURE
,
1409 "reason=%s", mbufp
);
1410 BIO_printf(bio_err
, "%s: HTTP CONNECT failed, reason=%s\n",
1418 /* Read past all following headers */
1421 * This does not necessarily catch the case when the full
1422 * HTTP response came in in more than a single TCP message.
1424 read_len
= BIO_gets(fbio
, mbuf
, BUF_SIZE
);
1425 } while (read_len
> 2);
1429 (void)BIO_flush(fbio
);