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Commit | Line | Data |
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29f178bd | 1 | /* |
4333b89f | 2 | * Copyright 2001-2021 The OpenSSL Project Authors. All Rights Reserved. |
29f178bd DDO |
3 | * Copyright Siemens AG 2018-2020 |
4 | * | |
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 | |
9 | */ | |
10 | ||
11 | #include "e_os.h" | |
12 | #include <stdio.h> | |
13 | #include <stdlib.h> | |
14 | #include "crypto/ctype.h" | |
15 | #include <string.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 "internal/sockets.h" | |
af16097f | 24 | #include "internal/common.h" /* for ossl_assert() */ |
29f178bd | 25 | |
29f178bd DDO |
26 | #define HTTP_PREFIX "HTTP/" |
27 | #define HTTP_VERSION_PATT "1." /* allow 1.x */ | |
47bb597b | 28 | #define HTTP_VERSION_STR_LEN sizeof(HTTP_VERSION_PATT) /* == strlen("1.0") */ |
19f97fe6 DDO |
29 | #define HTTP_PREFIX_VERSION HTTP_PREFIX""HTTP_VERSION_PATT |
30 | #define HTTP_1_0 HTTP_PREFIX_VERSION"0" /* "HTTP/1.0" */ | |
765860a3 | 31 | #define HTTP_LINE1_MINLEN (sizeof(HTTP_PREFIX_VERSION "x 200\n") - 1) |
29f178bd DDO |
32 | #define HTTP_VERSION_MAX_REDIRECTIONS 50 |
33 | ||
34 | #define HTTP_STATUS_CODE_OK 200 | |
35 | #define HTTP_STATUS_CODE_MOVED_PERMANENTLY 301 | |
36 | #define HTTP_STATUS_CODE_FOUND 302 | |
37 | ||
29f178bd DDO |
38 | /* Stateful HTTP request code, supporting blocking and non-blocking I/O */ |
39 | ||
40 | /* Opaque HTTP request status structure */ | |
41 | ||
42 | struct ossl_http_req_ctx_st { | |
43 | int state; /* Current I/O state */ | |
e2c38c1a DDO |
44 | unsigned char *buf; /* Buffer to write request or read response */ |
45 | int buf_size; /* Buffer size */ | |
19f97fe6 DDO |
46 | int free_wbio; /* wbio allocated internally, free with ctx */ |
47 | BIO *wbio; /* BIO to write/send request to */ | |
48 | BIO *rbio; /* BIO to read/receive response from */ | |
49 | OSSL_HTTP_bio_cb_t upd_fn; /* Optional BIO update callback used for TLS */ | |
50 | void *upd_arg; /* Optional arg for update callback function */ | |
51 | int use_ssl; /* Use HTTPS */ | |
52 | char *proxy; /* Optional proxy name or URI */ | |
53 | char *server; /* Optional server host name */ | |
54 | char *port; /* Optional server port */ | |
8b5ca511 DDO |
55 | BIO *mem; /* Memory BIO holding request/response header */ |
56 | BIO *req; /* BIO holding the request provided by caller */ | |
19f97fe6 DDO |
57 | int method_POST; /* HTTP method is POST (else GET) */ |
58 | char *expected_ct; /* Optional expected Content-Type */ | |
59 | int expect_asn1; /* Response must be ASN.1-encoded */ | |
8b5ca511 DDO |
60 | unsigned char *pos; /* Current position sending data */ |
61 | long len_to_send; /* Number of bytes still to send */ | |
be799eb7 DDO |
62 | size_t resp_len; /* Length of response */ |
63 | size_t max_resp_len; /* Maximum length of response, or 0 */ | |
8f965908 DDO |
64 | int keep_alive; /* Persistent conn. 0=no, 1=prefer, 2=require */ |
65 | time_t max_time; /* Maximum end time of current transfer, or 0 */ | |
66 | time_t max_total_time; /* Maximum end time of total transfer, or 0 */ | |
19f97fe6 | 67 | char *redirection_url; /* Location obtained from HTTP status 301/302 */ |
29f178bd DDO |
68 | }; |
69 | ||
29f178bd DDO |
70 | /* HTTP states */ |
71 | ||
be799eb7 DDO |
72 | #define OHS_NOREAD 0x1000 /* If set no reading should be performed */ |
73 | #define OHS_ERROR (0 | OHS_NOREAD) /* Error condition */ | |
8b5ca511 DDO |
74 | #define OHS_ADD_HEADERS (1 | OHS_NOREAD) /* Adding header lines to request */ |
75 | #define OHS_WRITE_INIT (2 | OHS_NOREAD) /* 1st call: ready to start send */ | |
76 | #define OHS_WRITE_HDR (3 | OHS_NOREAD) /* Request header being sent */ | |
77 | #define OHS_WRITE_REQ (4 | OHS_NOREAD) /* Request contents being sent */ | |
78 | #define OHS_FLUSH (5 | OHS_NOREAD) /* Request being flushed */ | |
be799eb7 DDO |
79 | #define OHS_FIRSTLINE 1 /* First line of response being read */ |
80 | #define OHS_HEADERS 2 /* MIME headers of response being read */ | |
81 | #define OHS_REDIRECT 3 /* MIME headers being read, expecting Location */ | |
82 | #define OHS_ASN1_HEADER 4 /* ASN1 sequence header (tag+length) being read */ | |
83 | #define OHS_ASN1_CONTENT 5 /* ASN1 content octets being read */ | |
84 | #define OHS_ASN1_DONE (6 | OHS_NOREAD) /* ASN1 content read completed */ | |
85 | #define OHS_STREAM (7 | OHS_NOREAD) /* HTTP content stream to be read */ | |
29f178bd | 86 | |
19f97fe6 DDO |
87 | /* Low-level HTTP API implementation */ |
88 | ||
68bb06f7 | 89 | OSSL_HTTP_REQ_CTX *OSSL_HTTP_REQ_CTX_new(BIO *wbio, BIO *rbio, int buf_size) |
29f178bd DDO |
90 | { |
91 | OSSL_HTTP_REQ_CTX *rctx; | |
92 | ||
93 | if (wbio == NULL || rbio == NULL) { | |
9311d0c4 | 94 | ERR_raise(ERR_LIB_HTTP, ERR_R_PASSED_NULL_PARAMETER); |
29f178bd DDO |
95 | return NULL; |
96 | } | |
97 | ||
98 | if ((rctx = OPENSSL_zalloc(sizeof(*rctx))) == NULL) | |
99 | return NULL; | |
100 | rctx->state = OHS_ERROR; | |
647a5dbf | 101 | rctx->buf_size = buf_size > 0 ? buf_size : OSSL_HTTP_DEFAULT_MAX_LINE_LEN; |
e2c38c1a | 102 | rctx->buf = OPENSSL_malloc(rctx->buf_size); |
29f178bd DDO |
103 | rctx->wbio = wbio; |
104 | rctx->rbio = rbio; | |
e2c38c1a | 105 | if (rctx->buf == NULL) { |
a6d40689 | 106 | OPENSSL_free(rctx); |
29f178bd DDO |
107 | return NULL; |
108 | } | |
647a5dbf | 109 | rctx->max_resp_len = OSSL_HTTP_DEFAULT_MAX_RESP_LEN; |
a6d40689 | 110 | /* everything else is 0, e.g. rctx->len_to_send, or NULL, e.g. rctx->mem */ |
29f178bd DDO |
111 | return rctx; |
112 | } | |
113 | ||
114 | void OSSL_HTTP_REQ_CTX_free(OSSL_HTTP_REQ_CTX *rctx) | |
115 | { | |
116 | if (rctx == NULL) | |
117 | return; | |
19f97fe6 DDO |
118 | /* |
119 | * Use BIO_free_all() because bio_update_fn may prepend or append to cbio. | |
120 | * This also frees any (e.g., SSL/TLS) BIOs linked with bio and, | |
121 | * like BIO_reset(bio), calls SSL_shutdown() to notify/alert the peer. | |
122 | */ | |
123 | if (rctx->free_wbio) | |
124 | BIO_free_all(rctx->wbio); | |
125 | /* do not free rctx->rbio */ | |
de5a0198 TM |
126 | BIO_free(rctx->mem); |
127 | BIO_free(rctx->req); | |
e2c38c1a | 128 | OPENSSL_free(rctx->buf); |
19f97fe6 DDO |
129 | OPENSSL_free(rctx->proxy); |
130 | OPENSSL_free(rctx->server); | |
131 | OPENSSL_free(rctx->port); | |
8f965908 | 132 | OPENSSL_free(rctx->expected_ct); |
29f178bd DDO |
133 | OPENSSL_free(rctx); |
134 | } | |
135 | ||
4d190f99 | 136 | BIO *OSSL_HTTP_REQ_CTX_get0_mem_bio(const OSSL_HTTP_REQ_CTX *rctx) |
29f178bd DDO |
137 | { |
138 | if (rctx == NULL) { | |
9311d0c4 | 139 | ERR_raise(ERR_LIB_HTTP, ERR_R_PASSED_NULL_PARAMETER); |
29f178bd DDO |
140 | return NULL; |
141 | } | |
142 | return rctx->mem; | |
143 | } | |
144 | ||
8f965908 DDO |
145 | size_t OSSL_HTTP_REQ_CTX_get_resp_len(const OSSL_HTTP_REQ_CTX *rctx) |
146 | { | |
147 | if (rctx == NULL) { | |
148 | ERR_raise(ERR_LIB_HTTP, ERR_R_PASSED_NULL_PARAMETER); | |
149 | return 0; | |
150 | } | |
151 | return rctx->resp_len; | |
152 | } | |
153 | ||
29f178bd DDO |
154 | void OSSL_HTTP_REQ_CTX_set_max_response_length(OSSL_HTTP_REQ_CTX *rctx, |
155 | unsigned long len) | |
156 | { | |
157 | if (rctx == NULL) { | |
9311d0c4 | 158 | ERR_raise(ERR_LIB_HTTP, ERR_R_PASSED_NULL_PARAMETER); |
29f178bd DDO |
159 | return; |
160 | } | |
647a5dbf | 161 | rctx->max_resp_len = len != 0 ? (size_t)len : OSSL_HTTP_DEFAULT_MAX_RESP_LEN; |
29f178bd DDO |
162 | } |
163 | ||
164 | /* | |
534725fd | 165 | * Create request line using |rctx| and |path| (or "/" in case |path| is NULL). |
29f178bd DDO |
166 | * Server name (and port) must be given if and only if plain HTTP proxy is used. |
167 | */ | |
534725fd | 168 | int OSSL_HTTP_REQ_CTX_set_request_line(OSSL_HTTP_REQ_CTX *rctx, int method_POST, |
cddbcf02 DDO |
169 | const char *server, const char *port, |
170 | const char *path) | |
29f178bd DDO |
171 | { |
172 | if (rctx == NULL) { | |
9311d0c4 | 173 | ERR_raise(ERR_LIB_HTTP, ERR_R_PASSED_NULL_PARAMETER); |
29f178bd DDO |
174 | return 0; |
175 | } | |
a6d40689 DDO |
176 | BIO_free(rctx->mem); |
177 | if ((rctx->mem = BIO_new(BIO_s_mem())) == NULL) | |
178 | return 0; | |
29f178bd | 179 | |
534725fd | 180 | rctx->method_POST = method_POST != 0; |
046fba44 | 181 | if (BIO_printf(rctx->mem, "%s ", rctx->method_POST ? "POST" : "GET") <= 0) |
29f178bd DDO |
182 | return 0; |
183 | ||
184 | if (server != NULL) { /* HTTP (but not HTTPS) proxy is used */ | |
185 | /* | |
186 | * Section 5.1.2 of RFC 1945 states that the absoluteURI form is only | |
187 | * allowed when using a proxy | |
188 | */ | |
4b1fe471 | 189 | if (BIO_printf(rctx->mem, OSSL_HTTP_PREFIX"%s", server) <= 0) |
29f178bd DDO |
190 | return 0; |
191 | if (port != NULL && BIO_printf(rctx->mem, ":%s", port) <= 0) | |
192 | return 0; | |
193 | } | |
194 | ||
195 | /* Make sure path includes a forward slash */ | |
196 | if (path == NULL) | |
197 | path = "/"; | |
198 | if (path[0] != '/' && BIO_printf(rctx->mem, "/") <= 0) | |
199 | return 0; | |
95c0b295 DDO |
200 | /* |
201 | * Add (the rest of) the path and the HTTP version, | |
202 | * which is fixed to 1.0 for straightforward implementation of keep-alive | |
203 | */ | |
19f97fe6 | 204 | if (BIO_printf(rctx->mem, "%s "HTTP_1_0"\r\n", path) <= 0) |
29f178bd | 205 | return 0; |
95c0b295 | 206 | |
19f97fe6 | 207 | rctx->resp_len = 0; |
8b5ca511 | 208 | rctx->state = OHS_ADD_HEADERS; |
29f178bd DDO |
209 | return 1; |
210 | } | |
211 | ||
212 | int OSSL_HTTP_REQ_CTX_add1_header(OSSL_HTTP_REQ_CTX *rctx, | |
213 | const char *name, const char *value) | |
214 | { | |
215 | if (rctx == NULL || name == NULL) { | |
9311d0c4 | 216 | ERR_raise(ERR_LIB_HTTP, ERR_R_PASSED_NULL_PARAMETER); |
29f178bd DDO |
217 | return 0; |
218 | } | |
a6d40689 DDO |
219 | if (rctx->mem == NULL) { |
220 | ERR_raise(ERR_LIB_HTTP, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED); | |
221 | return 0; | |
222 | } | |
29f178bd DDO |
223 | |
224 | if (BIO_puts(rctx->mem, name) <= 0) | |
225 | return 0; | |
226 | if (value != NULL) { | |
227 | if (BIO_write(rctx->mem, ": ", 2) != 2) | |
228 | return 0; | |
229 | if (BIO_puts(rctx->mem, value) <= 0) | |
230 | return 0; | |
231 | } | |
19f97fe6 | 232 | return BIO_write(rctx->mem, "\r\n", 2) == 2; |
29f178bd DDO |
233 | } |
234 | ||
8f965908 DDO |
235 | int OSSL_HTTP_REQ_CTX_set_expected(OSSL_HTTP_REQ_CTX *rctx, |
236 | const char *content_type, int asn1, | |
237 | int timeout, int keep_alive) | |
238 | { | |
239 | if (rctx == NULL) { | |
240 | ERR_raise(ERR_LIB_HTTP, ERR_R_PASSED_NULL_PARAMETER); | |
241 | return 0; | |
242 | } | |
243 | if (keep_alive != 0 | |
8b5ca511 | 244 | && rctx->state != OHS_ERROR && rctx->state != OHS_ADD_HEADERS) { |
8f965908 DDO |
245 | /* Cannot anymore set keep-alive in request header */ |
246 | ERR_raise(ERR_LIB_HTTP, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED); | |
247 | return 0; | |
248 | } | |
249 | ||
250 | OPENSSL_free(rctx->expected_ct); | |
251 | rctx->expected_ct = NULL; | |
252 | if (content_type != NULL | |
253 | && (rctx->expected_ct = OPENSSL_strdup(content_type)) == NULL) | |
254 | return 0; | |
255 | ||
256 | rctx->expect_asn1 = asn1; | |
257 | if (timeout >= 0) | |
258 | rctx->max_time = timeout > 0 ? time(NULL) + timeout : 0; | |
6a1f9cdc | 259 | else /* take over any |overall_timeout| arg of OSSL_HTTP_open(), else 0 */ |
8f965908 DDO |
260 | rctx->max_time = rctx->max_total_time; |
261 | rctx->keep_alive = keep_alive; | |
262 | return 1; | |
263 | } | |
264 | ||
de5a0198 TM |
265 | static int set1_content(OSSL_HTTP_REQ_CTX *rctx, |
266 | const char *content_type, BIO *req) | |
29f178bd | 267 | { |
29f178bd DDO |
268 | long req_len; |
269 | ||
8b5ca511 | 270 | if (rctx == NULL || (req == NULL && content_type != NULL)) { |
9311d0c4 | 271 | ERR_raise(ERR_LIB_HTTP, ERR_R_PASSED_NULL_PARAMETER); |
29f178bd DDO |
272 | return 0; |
273 | } | |
19f97fe6 DDO |
274 | |
275 | if (rctx->keep_alive != 0 | |
276 | && !OSSL_HTTP_REQ_CTX_add1_header(rctx, "Connection", "keep-alive")) | |
277 | return 0; | |
19f97fe6 | 278 | |
95c0b295 DDO |
279 | BIO_free(rctx->req); |
280 | rctx->req = NULL; | |
8b5ca511 | 281 | if (req == NULL) |
19f97fe6 DDO |
282 | return 1; |
283 | if (!rctx->method_POST) { | |
0a20cc4b DDO |
284 | ERR_raise(ERR_LIB_HTTP, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED); |
285 | return 0; | |
286 | } | |
29f178bd DDO |
287 | |
288 | if (content_type != NULL | |
289 | && BIO_printf(rctx->mem, "Content-Type: %s\r\n", content_type) <= 0) | |
290 | return 0; | |
291 | ||
de5a0198 | 292 | /* streaming BIO may not support querying size */ |
95c0b295 DDO |
293 | if (((req_len = BIO_ctrl(req, BIO_CTRL_INFO, 0, NULL)) <= 0 |
294 | || BIO_printf(rctx->mem, "Content-Length: %ld\r\n", req_len) > 0) | |
295 | && BIO_up_ref(req)) { | |
de5a0198 TM |
296 | rctx->req = req; |
297 | return 1; | |
298 | } | |
299 | return 0; | |
29f178bd DDO |
300 | } |
301 | ||
1c8505fb | 302 | int OSSL_HTTP_REQ_CTX_set1_req(OSSL_HTTP_REQ_CTX *rctx, const char *content_type, |
8f965908 | 303 | const ASN1_ITEM *it, const ASN1_VALUE *req) |
29f178bd | 304 | { |
95c0b295 DDO |
305 | BIO *mem = NULL; |
306 | int res = 1; | |
29f178bd | 307 | |
95c0b295 DDO |
308 | if (req != NULL) |
309 | res = (mem = ASN1_item_i2d_mem_bio(it, req)) != NULL; | |
310 | res = res && set1_content(rctx, content_type, mem); | |
29f178bd DDO |
311 | BIO_free(mem); |
312 | return res; | |
313 | } | |
314 | ||
e2c38c1a DDO |
315 | static int add1_headers(OSSL_HTTP_REQ_CTX *rctx, |
316 | const STACK_OF(CONF_VALUE) *headers, const char *host) | |
29f178bd DDO |
317 | { |
318 | int i; | |
19a39b29 | 319 | int add_host = host != NULL && *host != '\0'; |
29f178bd DDO |
320 | CONF_VALUE *hdr; |
321 | ||
322 | for (i = 0; i < sk_CONF_VALUE_num(headers); i++) { | |
323 | hdr = sk_CONF_VALUE_value(headers, i); | |
324 | if (add_host && strcasecmp("host", hdr->name) == 0) | |
325 | add_host = 0; | |
326 | if (!OSSL_HTTP_REQ_CTX_add1_header(rctx, hdr->name, hdr->value)) | |
327 | return 0; | |
328 | } | |
329 | ||
330 | if (add_host && !OSSL_HTTP_REQ_CTX_add1_header(rctx, "Host", host)) | |
331 | return 0; | |
332 | return 1; | |
333 | } | |
334 | ||
19f97fe6 DDO |
335 | /* Create OSSL_HTTP_REQ_CTX structure using the values provided. */ |
336 | static OSSL_HTTP_REQ_CTX *http_req_ctx_new(int free_wbio, BIO *wbio, BIO *rbio, | |
337 | OSSL_HTTP_bio_cb_t bio_update_fn, | |
338 | void *arg, int use_ssl, | |
339 | const char *proxy, | |
340 | const char *server, const char *port, | |
be799eb7 | 341 | int buf_size, int overall_timeout) |
29f178bd | 342 | { |
19f97fe6 | 343 | OSSL_HTTP_REQ_CTX *rctx = OSSL_HTTP_REQ_CTX_new(wbio, rbio, buf_size); |
29f178bd | 344 | |
19f97fe6 | 345 | if (rctx == NULL) |
29f178bd | 346 | return NULL; |
19f97fe6 DDO |
347 | rctx->free_wbio = free_wbio; |
348 | rctx->upd_fn = bio_update_fn; | |
349 | rctx->upd_arg = arg; | |
350 | rctx->use_ssl = use_ssl; | |
351 | if (proxy != NULL | |
352 | && (rctx->proxy = OPENSSL_strdup(proxy)) == NULL) | |
353 | goto err; | |
354 | if (server != NULL | |
355 | && (rctx->server = OPENSSL_strdup(server)) == NULL) | |
356 | goto err; | |
357 | if (port != NULL | |
358 | && (rctx->port = OPENSSL_strdup(port)) == NULL) | |
359 | goto err; | |
360 | rctx->max_total_time = | |
361 | overall_timeout > 0 ? time(NULL) + overall_timeout : 0; | |
362 | return rctx; | |
29f178bd | 363 | |
19f97fe6 | 364 | err: |
29f178bd DDO |
365 | OSSL_HTTP_REQ_CTX_free(rctx); |
366 | return NULL; | |
367 | } | |
368 | ||
369 | /* | |
370 | * Parse first HTTP response line. This should be like this: "HTTP/1.0 200 OK". | |
e2b7dc35 DDO |
371 | * We need to obtain the status code and (optional) informational message. |
372 | * Return any received HTTP response status code, or 0 on fatal error. | |
29f178bd DDO |
373 | */ |
374 | ||
19f97fe6 | 375 | static int parse_http_line1(char *line, int *found_keep_alive) |
29f178bd | 376 | { |
e2b7dc35 | 377 | int i, retcode, err; |
29f178bd DDO |
378 | char *code, *reason, *end; |
379 | ||
2ff286c2 | 380 | if (!CHECK_AND_SKIP_PREFIX(line, HTTP_PREFIX_VERSION)) |
19f97fe6 DDO |
381 | goto err; |
382 | /* above HTTP 1.0, connection persistence is the default */ | |
2ff286c2 | 383 | *found_keep_alive = *line > '0'; |
19f97fe6 | 384 | |
29f178bd DDO |
385 | /* Skip to first whitespace (past protocol info) */ |
386 | for (code = line; *code != '\0' && !ossl_isspace(*code); code++) | |
387 | continue; | |
19f97fe6 DDO |
388 | if (*code == '\0') |
389 | goto err; | |
29f178bd DDO |
390 | |
391 | /* Skip past whitespace to start of response code */ | |
392 | while (*code != '\0' && ossl_isspace(*code)) | |
393 | code++; | |
19f97fe6 DDO |
394 | if (*code == '\0') |
395 | goto err; | |
29f178bd DDO |
396 | |
397 | /* Find end of response code: first whitespace after start of code */ | |
398 | for (reason = code; *reason != '\0' && !ossl_isspace(*reason); reason++) | |
399 | continue; | |
400 | ||
19f97fe6 DDO |
401 | if (*reason == '\0') |
402 | goto err; | |
29f178bd DDO |
403 | |
404 | /* Set end of response code and start of message */ | |
405 | *reason++ = '\0'; | |
406 | ||
407 | /* Attempt to parse numeric code */ | |
408 | retcode = strtoul(code, &end, 10); | |
29f178bd | 409 | if (*end != '\0') |
19f97fe6 | 410 | goto err; |
29f178bd DDO |
411 | |
412 | /* Skip over any leading whitespace in message */ | |
413 | while (*reason != '\0' && ossl_isspace(*reason)) | |
414 | reason++; | |
415 | ||
416 | if (*reason != '\0') { | |
417 | /* | |
418 | * Finally zap any trailing whitespace in message (include CRLF) | |
419 | */ | |
420 | ||
421 | /* chop any trailing whitespace from reason */ | |
422 | /* We know reason has a non-whitespace character so this is OK */ | |
423 | for (end = reason + strlen(reason) - 1; ossl_isspace(*end); end--) | |
424 | *end = '\0'; | |
425 | } | |
426 | ||
427 | switch (retcode) { | |
428 | case HTTP_STATUS_CODE_OK: | |
429 | case HTTP_STATUS_CODE_MOVED_PERMANENTLY: | |
430 | case HTTP_STATUS_CODE_FOUND: | |
431 | return retcode; | |
432 | default: | |
e2b7dc35 | 433 | err = HTTP_R_RECEIVED_ERROR; |
29f178bd | 434 | if (retcode < 400) |
e2b7dc35 | 435 | err = HTTP_R_STATUS_CODE_UNSUPPORTED; |
29f178bd | 436 | if (*reason == '\0') |
e2b7dc35 | 437 | ERR_raise_data(ERR_LIB_HTTP, err, "code=%s", code); |
29f178bd | 438 | else |
e2b7dc35 DDO |
439 | ERR_raise_data(ERR_LIB_HTTP, err, "code=%s, reason=%s", code, |
440 | reason); | |
441 | return retcode; | |
29f178bd | 442 | } |
19f97fe6 DDO |
443 | |
444 | err: | |
e2b7dc35 DDO |
445 | for (i = 0; i < 60 && line[i] != '\0'; i++) |
446 | if (!ossl_isprint(line[i])) | |
447 | line[i] = ' '; | |
be799eb7 DDO |
448 | line[i] = '\0'; |
449 | ERR_raise_data(ERR_LIB_HTTP, HTTP_R_HEADER_PARSE_ERROR, "content=%s", line); | |
19f97fe6 | 450 | return 0; |
29f178bd DDO |
451 | } |
452 | ||
be799eb7 | 453 | static int check_set_resp_len(OSSL_HTTP_REQ_CTX *rctx, size_t len) |
29f178bd | 454 | { |
be799eb7 | 455 | if (rctx->max_resp_len != 0 && len > rctx->max_resp_len) |
a150f8e1 | 456 | ERR_raise_data(ERR_LIB_HTTP, HTTP_R_MAX_RESP_LEN_EXCEEDED, |
be799eb7 | 457 | "length=%zu, max=%zu", len, rctx->max_resp_len); |
a150f8e1 RL |
458 | if (rctx->resp_len != 0 && rctx->resp_len != len) |
459 | ERR_raise_data(ERR_LIB_HTTP, HTTP_R_INCONSISTENT_CONTENT_LENGTH, | |
be799eb7 | 460 | "ASN.1 length=%zu, Content-Length=%zu", |
d337af18 | 461 | len, rctx->resp_len); |
29f178bd DDO |
462 | rctx->resp_len = len; |
463 | return 1; | |
464 | } | |
465 | ||
f0d5a3b6 DDO |
466 | static int may_still_retry(time_t max_time, int *ptimeout) |
467 | { | |
468 | time_t time_diff, now = time(NULL); | |
469 | ||
470 | if (max_time != 0) { | |
471 | if (max_time < now) { | |
472 | ERR_raise(ERR_LIB_HTTP, HTTP_R_RETRY_TIMEOUT); | |
473 | return 0; | |
474 | } | |
475 | time_diff = max_time - now; | |
476 | *ptimeout = time_diff > INT_MAX ? INT_MAX : (int)time_diff; | |
477 | } | |
478 | return 1; | |
479 | } | |
480 | ||
29f178bd DDO |
481 | /* |
482 | * Try exchanging request and response via HTTP on (non-)blocking BIO in rctx. | |
483 | * Returns 1 on success, 0 on error or redirection, -1 on BIO_should_retry. | |
484 | */ | |
485 | int OSSL_HTTP_REQ_CTX_nbio(OSSL_HTTP_REQ_CTX *rctx) | |
486 | { | |
19f97fe6 | 487 | int i, found_expected_ct = 0, found_keep_alive = 0; |
673474b1 | 488 | long n; |
be799eb7 | 489 | size_t resp_len; |
29f178bd DDO |
490 | const unsigned char *p; |
491 | char *key, *value, *line_end = NULL; | |
492 | ||
493 | if (rctx == NULL) { | |
9311d0c4 | 494 | ERR_raise(ERR_LIB_HTTP, ERR_R_PASSED_NULL_PARAMETER); |
29f178bd DDO |
495 | return 0; |
496 | } | |
a6d40689 DDO |
497 | if (rctx->mem == NULL || rctx->wbio == NULL || rctx->rbio == NULL) { |
498 | ERR_raise(ERR_LIB_HTTP, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED); | |
499 | return 0; | |
500 | } | |
29f178bd DDO |
501 | |
502 | rctx->redirection_url = NULL; | |
503 | next_io: | |
504 | if ((rctx->state & OHS_NOREAD) == 0) { | |
be799eb7 | 505 | if (rctx->expect_asn1) |
e2c38c1a | 506 | n = BIO_read(rctx->rbio, rctx->buf, rctx->buf_size); |
be799eb7 | 507 | else |
e2c38c1a | 508 | n = BIO_gets(rctx->rbio, (char *)rctx->buf, rctx->buf_size); |
29f178bd DDO |
509 | if (n <= 0) { |
510 | if (BIO_should_retry(rctx->rbio)) | |
511 | return -1; | |
a6d40689 | 512 | ERR_raise(ERR_LIB_HTTP, HTTP_R_FAILED_READING_DATA); |
29f178bd DDO |
513 | return 0; |
514 | } | |
515 | ||
516 | /* Write data to memory BIO */ | |
e2c38c1a | 517 | if (BIO_write(rctx->mem, rctx->buf, n) != n) |
29f178bd DDO |
518 | return 0; |
519 | } | |
520 | ||
521 | switch (rctx->state) { | |
8b5ca511 | 522 | case OHS_ADD_HEADERS: |
29f178bd DDO |
523 | /* Last operation was adding headers: need a final \r\n */ |
524 | if (BIO_write(rctx->mem, "\r\n", 2) != 2) { | |
525 | rctx->state = OHS_ERROR; | |
526 | return 0; | |
527 | } | |
528 | rctx->state = OHS_WRITE_INIT; | |
529 | ||
530 | /* fall thru */ | |
531 | case OHS_WRITE_INIT: | |
8b5ca511 DDO |
532 | rctx->len_to_send = BIO_get_mem_data(rctx->mem, &rctx->pos); |
533 | rctx->state = OHS_WRITE_HDR; | |
29f178bd DDO |
534 | |
535 | /* fall thru */ | |
8b5ca511 DDO |
536 | case OHS_WRITE_HDR: |
537 | /* Copy some chunk of data from rctx->mem to rctx->wbio */ | |
538 | case OHS_WRITE_REQ: | |
539 | /* Copy some chunk of data from rctx->req to rctx->wbio */ | |
540 | ||
541 | if (rctx->len_to_send > 0) { | |
542 | i = BIO_write(rctx->wbio, rctx->pos, rctx->len_to_send); | |
543 | if (i <= 0) { | |
544 | if (BIO_should_retry(rctx->wbio)) | |
545 | return -1; | |
546 | rctx->state = OHS_ERROR; | |
547 | return 0; | |
548 | } | |
549 | rctx->pos += i; | |
550 | rctx->len_to_send -= i; | |
551 | goto next_io; | |
29f178bd | 552 | } |
8b5ca511 DDO |
553 | if (rctx->state == OHS_WRITE_HDR) { |
554 | (void)BIO_reset(rctx->mem); | |
555 | rctx->state = OHS_WRITE_REQ; | |
556 | } | |
557 | if (rctx->req != NULL && !BIO_eof(rctx->req)) { | |
e2c38c1a | 558 | n = BIO_read(rctx->req, rctx->buf, rctx->buf_size); |
8b5ca511 DDO |
559 | if (n <= 0) { |
560 | if (BIO_should_retry(rctx->rbio)) | |
561 | return -1; | |
562 | ERR_raise(ERR_LIB_HTTP, HTTP_R_FAILED_READING_DATA); | |
563 | return 0; | |
564 | } | |
e2c38c1a | 565 | rctx->pos = rctx->buf; |
8b5ca511 | 566 | rctx->len_to_send = n; |
29f178bd | 567 | goto next_io; |
8b5ca511 | 568 | } |
29f178bd DDO |
569 | rctx->state = OHS_FLUSH; |
570 | ||
29f178bd DDO |
571 | /* fall thru */ |
572 | case OHS_FLUSH: | |
573 | ||
574 | i = BIO_flush(rctx->wbio); | |
575 | ||
576 | if (i > 0) { | |
577 | rctx->state = OHS_FIRSTLINE; | |
578 | goto next_io; | |
579 | } | |
580 | ||
581 | if (BIO_should_retry(rctx->wbio)) | |
582 | return -1; | |
583 | ||
584 | rctx->state = OHS_ERROR; | |
585 | return 0; | |
586 | ||
587 | case OHS_ERROR: | |
588 | return 0; | |
589 | ||
590 | case OHS_FIRSTLINE: | |
591 | case OHS_HEADERS: | |
592 | case OHS_REDIRECT: | |
593 | ||
594 | /* Attempt to read a line in */ | |
595 | next_line: | |
596 | /* | |
597 | * Due to strange memory BIO behavior with BIO_gets we have to check | |
598 | * there's a complete line in there before calling BIO_gets or we'll | |
599 | * just get a partial read. | |
600 | */ | |
601 | n = BIO_get_mem_data(rctx->mem, &p); | |
602 | if (n <= 0 || memchr(p, '\n', n) == 0) { | |
e2c38c1a | 603 | if (n >= rctx->buf_size) { |
29f178bd DDO |
604 | rctx->state = OHS_ERROR; |
605 | return 0; | |
606 | } | |
607 | goto next_io; | |
608 | } | |
e2c38c1a | 609 | n = BIO_gets(rctx->mem, (char *)rctx->buf, rctx->buf_size); |
29f178bd DDO |
610 | |
611 | if (n <= 0) { | |
612 | if (BIO_should_retry(rctx->mem)) | |
613 | goto next_io; | |
614 | rctx->state = OHS_ERROR; | |
615 | return 0; | |
616 | } | |
617 | ||
618 | /* Don't allow excessive lines */ | |
e2c38c1a | 619 | if (n == rctx->buf_size) { |
9311d0c4 | 620 | ERR_raise(ERR_LIB_HTTP, HTTP_R_RESPONSE_LINE_TOO_LONG); |
29f178bd DDO |
621 | rctx->state = OHS_ERROR; |
622 | return 0; | |
623 | } | |
624 | ||
625 | /* First line */ | |
626 | if (rctx->state == OHS_FIRSTLINE) { | |
e2c38c1a | 627 | switch (parse_http_line1((char *)rctx->buf, &found_keep_alive)) { |
29f178bd DDO |
628 | case HTTP_STATUS_CODE_OK: |
629 | rctx->state = OHS_HEADERS; | |
630 | goto next_line; | |
631 | case HTTP_STATUS_CODE_MOVED_PERMANENTLY: | |
632 | case HTTP_STATUS_CODE_FOUND: /* i.e., moved temporarily */ | |
046fba44 | 633 | if (!rctx->method_POST) { /* method is GET */ |
29f178bd DDO |
634 | rctx->state = OHS_REDIRECT; |
635 | goto next_line; | |
636 | } | |
9311d0c4 | 637 | ERR_raise(ERR_LIB_HTTP, HTTP_R_REDIRECTION_NOT_ENABLED); |
29f178bd DDO |
638 | /* redirection is not supported/recommended for POST */ |
639 | /* fall through */ | |
640 | default: | |
641 | rctx->state = OHS_ERROR; | |
38288f42 | 642 | goto next_line; |
29f178bd DDO |
643 | } |
644 | } | |
e2c38c1a | 645 | key = (char *)rctx->buf; |
29f178bd DDO |
646 | value = strchr(key, ':'); |
647 | if (value != NULL) { | |
648 | *(value++) = '\0'; | |
649 | while (ossl_isspace(*value)) | |
650 | value++; | |
651 | line_end = strchr(value, '\r'); | |
652 | if (line_end == NULL) | |
653 | line_end = strchr(value, '\n'); | |
654 | if (line_end != NULL) | |
655 | *line_end = '\0'; | |
656 | } | |
657 | if (value != NULL && line_end != NULL) { | |
afe554c2 DDO |
658 | if (rctx->state == OHS_REDIRECT |
659 | && strcasecmp(key, "Location") == 0) { | |
29f178bd DDO |
660 | rctx->redirection_url = value; |
661 | return 0; | |
662 | } | |
afe554c2 DDO |
663 | if (rctx->expected_ct != NULL |
664 | && strcasecmp(key, "Content-Type") == 0) { | |
665 | if (strcasecmp(rctx->expected_ct, value) != 0) { | |
a150f8e1 RL |
666 | ERR_raise_data(ERR_LIB_HTTP, HTTP_R_UNEXPECTED_CONTENT_TYPE, |
667 | "expected=%s, actual=%s", | |
668 | rctx->expected_ct, value); | |
29f178bd DDO |
669 | return 0; |
670 | } | |
19f97fe6 DDO |
671 | found_expected_ct = 1; |
672 | } | |
673 | ||
674 | /* https://tools.ietf.org/html/rfc7230#section-6.3 Persistence */ | |
675 | if (strcasecmp(key, "Connection") == 0) { | |
676 | if (strcasecmp(value, "keep-alive") == 0) | |
677 | found_keep_alive = 1; | |
678 | else if (strcasecmp(value, "close") == 0) | |
679 | found_keep_alive = 0; | |
e2c38c1a | 680 | } else if (strcasecmp(key, "Content-Length") == 0) { |
be799eb7 | 681 | resp_len = (size_t)strtoul(value, &line_end, 10); |
29f178bd | 682 | if (line_end == value || *line_end != '\0') { |
a150f8e1 RL |
683 | ERR_raise_data(ERR_LIB_HTTP, |
684 | HTTP_R_ERROR_PARSING_CONTENT_LENGTH, | |
685 | "input=%s", value); | |
29f178bd DDO |
686 | return 0; |
687 | } | |
688 | if (!check_set_resp_len(rctx, resp_len)) | |
689 | return 0; | |
690 | } | |
691 | } | |
692 | ||
d337af18 | 693 | /* Look for blank line indicating end of headers */ |
e2c38c1a | 694 | for (p = rctx->buf; *p != '\0'; p++) { |
29f178bd DDO |
695 | if (*p != '\r' && *p != '\n') |
696 | break; | |
697 | } | |
698 | if (*p != '\0') /* not end of headers */ | |
699 | goto next_line; | |
700 | ||
19f97fe6 DDO |
701 | if (rctx->keep_alive != 0 /* do not let server initiate keep_alive */ |
702 | && !found_keep_alive /* otherwise there is no change */) { | |
703 | if (rctx->keep_alive == 2) { | |
704 | rctx->keep_alive = 0; | |
705 | ERR_raise(ERR_LIB_HTTP, HTTP_R_SERVER_CANCELED_CONNECTION); | |
706 | return 0; | |
707 | } | |
708 | rctx->keep_alive = 0; | |
709 | } | |
710 | ||
38288f42 DDO |
711 | if (rctx->state == OHS_ERROR) |
712 | return 0; | |
713 | ||
714 | if (rctx->expected_ct != NULL && !found_expected_ct) { | |
715 | ERR_raise_data(ERR_LIB_HTTP, HTTP_R_MISSING_CONTENT_TYPE, | |
716 | "expected=%s", rctx->expected_ct); | |
717 | return 0; | |
718 | } | |
29f178bd DDO |
719 | if (rctx->state == OHS_REDIRECT) { |
720 | /* http status code indicated redirect but there was no Location */ | |
9311d0c4 | 721 | ERR_raise(ERR_LIB_HTTP, HTTP_R_MISSING_REDIRECT_LOCATION); |
29f178bd DDO |
722 | return 0; |
723 | } | |
724 | ||
725 | if (!rctx->expect_asn1) { | |
be799eb7 DDO |
726 | rctx->state = OHS_STREAM; |
727 | return 1; | |
29f178bd DDO |
728 | } |
729 | ||
730 | rctx->state = OHS_ASN1_HEADER; | |
731 | ||
732 | /* Fall thru */ | |
733 | case OHS_ASN1_HEADER: | |
734 | /* | |
735 | * Now reading ASN1 header: can read at least 2 bytes which is enough | |
736 | * for ASN1 SEQUENCE header and either length field or at least the | |
737 | * length of the length field. | |
738 | */ | |
739 | n = BIO_get_mem_data(rctx->mem, &p); | |
740 | if (n < 2) | |
741 | goto next_io; | |
742 | ||
743 | /* Check it is an ASN1 SEQUENCE */ | |
744 | if (*p++ != (V_ASN1_SEQUENCE | V_ASN1_CONSTRUCTED)) { | |
9311d0c4 | 745 | ERR_raise(ERR_LIB_HTTP, HTTP_R_MISSING_ASN1_ENCODING); |
29f178bd DDO |
746 | return 0; |
747 | } | |
748 | ||
749 | /* Check out length field */ | |
750 | if ((*p & 0x80) != 0) { | |
751 | /* | |
752 | * If MSB set on initial length octet we can now always read 6 | |
753 | * octets: make sure we have them. | |
754 | */ | |
755 | if (n < 6) | |
756 | goto next_io; | |
757 | n = *p & 0x7F; | |
758 | /* Not NDEF or excessive length */ | |
759 | if (n == 0 || (n > 4)) { | |
9311d0c4 | 760 | ERR_raise(ERR_LIB_HTTP, HTTP_R_ERROR_PARSING_ASN1_LENGTH); |
29f178bd DDO |
761 | return 0; |
762 | } | |
763 | p++; | |
764 | resp_len = 0; | |
765 | for (i = 0; i < n; i++) { | |
766 | resp_len <<= 8; | |
767 | resp_len |= *p++; | |
768 | } | |
769 | resp_len += n + 2; | |
770 | } else { | |
771 | resp_len = *p + 2; | |
772 | } | |
773 | if (!check_set_resp_len(rctx, resp_len)) | |
774 | return 0; | |
775 | ||
be799eb7 | 776 | rctx->state = OHS_ASN1_CONTENT; |
29f178bd DDO |
777 | |
778 | /* Fall thru */ | |
be799eb7 | 779 | case OHS_ASN1_CONTENT: |
29f178bd DDO |
780 | default: |
781 | n = BIO_get_mem_data(rctx->mem, NULL); | |
be799eb7 | 782 | if (n < 0 || (size_t)n < rctx->resp_len) |
29f178bd DDO |
783 | goto next_io; |
784 | ||
be799eb7 | 785 | rctx->state = OHS_ASN1_DONE; |
29f178bd DDO |
786 | return 1; |
787 | } | |
788 | } | |
789 | ||
8f965908 DDO |
790 | int OSSL_HTTP_REQ_CTX_nbio_d2i(OSSL_HTTP_REQ_CTX *rctx, |
791 | ASN1_VALUE **pval, const ASN1_ITEM *it) | |
792 | { | |
793 | const unsigned char *p; | |
794 | int rv; | |
795 | ||
796 | *pval = NULL; | |
797 | if ((rv = OSSL_HTTP_REQ_CTX_nbio(rctx)) != 1) | |
798 | return rv; | |
799 | *pval = ASN1_item_d2i(NULL, &p, BIO_get_mem_data(rctx->mem, &p), it); | |
800 | return *pval != NULL; | |
801 | ||
802 | } | |
803 | ||
29f178bd DDO |
804 | #ifndef OPENSSL_NO_SOCK |
805 | ||
806 | /* set up a new connection BIO, to HTTP server or to HTTP(S) proxy if given */ | |
e2c38c1a | 807 | static BIO *http_new_bio(const char *server /* optionally includes ":port" */, |
afe554c2 | 808 | const char *server_port /* explicit server port */, |
79a2bccd DDO |
809 | int use_ssl, |
810 | const char *proxy /* optionally includes ":port" */, | |
811 | const char *proxy_port /* explicit proxy port */) | |
29f178bd | 812 | { |
79a2bccd | 813 | const char *host = server; |
29f178bd DDO |
814 | const char *port = server_port; |
815 | BIO *cbio; | |
816 | ||
4b1fe471 | 817 | if (!ossl_assert(server != NULL)) |
29f178bd | 818 | return NULL; |
29f178bd DDO |
819 | |
820 | if (proxy != NULL) { | |
821 | host = proxy; | |
79a2bccd | 822 | port = proxy_port; |
29f178bd | 823 | } |
afe554c2 | 824 | |
79a2bccd DDO |
825 | if (port == NULL && strchr(host, ':') == NULL) |
826 | port = use_ssl ? OSSL_HTTPS_PORT : OSSL_HTTP_PORT; | |
afe554c2 DDO |
827 | |
828 | cbio = BIO_new_connect(host /* optionally includes ":port" */); | |
29f178bd DDO |
829 | if (cbio == NULL) |
830 | goto end; | |
831 | if (port != NULL) | |
832 | (void)BIO_set_conn_port(cbio, port); | |
833 | ||
834 | end: | |
835 | return cbio; | |
836 | } | |
e8d0819d | 837 | #endif /* OPENSSL_NO_SOCK */ |
29f178bd | 838 | |
82990287 | 839 | /* Exchange request and response via HTTP on (non-)blocking BIO */ |
8f965908 | 840 | BIO *OSSL_HTTP_REQ_CTX_exchange(OSSL_HTTP_REQ_CTX *rctx) |
29f178bd | 841 | { |
29f178bd DDO |
842 | int rv; |
843 | ||
844 | if (rctx == NULL) { | |
9311d0c4 | 845 | ERR_raise(ERR_LIB_HTTP, ERR_R_PASSED_NULL_PARAMETER); |
29f178bd DDO |
846 | return NULL; |
847 | } | |
848 | ||
849 | for (;;) { | |
850 | rv = OSSL_HTTP_REQ_CTX_nbio(rctx); | |
851 | if (rv != -1) | |
852 | break; | |
853 | /* BIO_should_retry was true */ | |
29f178bd | 854 | /* will not actually wait if rctx->max_time == 0 */ |
e8d0819d | 855 | if (BIO_wait(rctx->rbio, rctx->max_time, 100 /* milliseconds */) <= 0) |
29f178bd DDO |
856 | return NULL; |
857 | } | |
858 | ||
859 | if (rv == 0) { | |
860 | if (rctx->redirection_url == NULL) { /* an error occurred */ | |
1e6174b1 | 861 | if (rctx->len_to_send > 0) |
9311d0c4 | 862 | ERR_raise(ERR_LIB_HTTP, HTTP_R_ERROR_SENDING); |
29f178bd | 863 | else |
9311d0c4 | 864 | ERR_raise(ERR_LIB_HTTP, HTTP_R_ERROR_RECEIVING); |
29f178bd DDO |
865 | } |
866 | return NULL; | |
867 | } | |
be799eb7 | 868 | return rctx->state == OHS_STREAM ? rctx->rbio : rctx->mem; |
29f178bd DDO |
869 | } |
870 | ||
19f97fe6 | 871 | int OSSL_HTTP_is_alive(const OSSL_HTTP_REQ_CTX *rctx) |
29f178bd | 872 | { |
19f97fe6 | 873 | return rctx != NULL && rctx->keep_alive != 0; |
29f178bd DDO |
874 | } |
875 | ||
19f97fe6 DDO |
876 | /* High-level HTTP API implementation */ |
877 | ||
878 | /* Initiate an HTTP session using bio, else use given server, proxy, etc. */ | |
8f965908 DDO |
879 | OSSL_HTTP_REQ_CTX *OSSL_HTTP_open(const char *server, const char *port, |
880 | const char *proxy, const char *no_proxy, | |
881 | int use_ssl, BIO *bio, BIO *rbio, | |
882 | OSSL_HTTP_bio_cb_t bio_update_fn, void *arg, | |
be799eb7 | 883 | int buf_size, int overall_timeout) |
8f965908 | 884 | { |
19f97fe6 DDO |
885 | BIO *cbio; /* == bio if supplied, used as connection BIO if rbio is NULL */ |
886 | OSSL_HTTP_REQ_CTX *rctx = NULL; | |
29f178bd DDO |
887 | |
888 | if (use_ssl && bio_update_fn == NULL) { | |
9311d0c4 | 889 | ERR_raise(ERR_LIB_HTTP, HTTP_R_TLS_NOT_ENABLED); |
29f178bd DDO |
890 | return NULL; |
891 | } | |
892 | if (rbio != NULL && (bio == NULL || bio_update_fn != NULL)) { | |
9311d0c4 | 893 | ERR_raise(ERR_LIB_HTTP, ERR_R_PASSED_INVALID_ARGUMENT); |
29f178bd DDO |
894 | return NULL; |
895 | } | |
29f178bd | 896 | |
4b1fe471 | 897 | if (bio != NULL) { |
29f178bd | 898 | cbio = bio; |
82990287 DDO |
899 | if (proxy != NULL || no_proxy != NULL) { |
900 | ERR_raise(ERR_LIB_HTTP, ERR_R_PASSED_INVALID_ARGUMENT); | |
901 | return NULL; | |
902 | } | |
4b1fe471 | 903 | } else { |
e8d0819d | 904 | #ifndef OPENSSL_NO_SOCK |
79a2bccd DDO |
905 | char *proxy_host = NULL, *proxy_port = NULL; |
906 | ||
4b1fe471 | 907 | if (server == NULL) { |
9311d0c4 | 908 | ERR_raise(ERR_LIB_HTTP, ERR_R_PASSED_NULL_PARAMETER); |
4b1fe471 DDO |
909 | return NULL; |
910 | } | |
19f97fe6 | 911 | if (port != NULL && *port == '\0') |
4b1fe471 DDO |
912 | port = NULL; |
913 | if (port == NULL && strchr(server, ':') == NULL) | |
914 | port = use_ssl ? OSSL_HTTPS_PORT : OSSL_HTTP_PORT; | |
ab9d67ef | 915 | proxy = OSSL_HTTP_adapt_proxy(proxy, no_proxy, server, use_ssl); |
79a2bccd DDO |
916 | if (proxy != NULL |
917 | && !OSSL_HTTP_parse_url(proxy, NULL /* use_ssl */, NULL /* user */, | |
918 | &proxy_host, &proxy_port, NULL /* num */, | |
919 | NULL /* path */, NULL, NULL)) | |
920 | return NULL; | |
e2c38c1a | 921 | cbio = http_new_bio(server, port, use_ssl, proxy_host, proxy_port); |
79a2bccd DDO |
922 | OPENSSL_free(proxy_host); |
923 | OPENSSL_free(proxy_port); | |
924 | if (cbio == NULL) | |
e8d0819d DDO |
925 | return NULL; |
926 | #else | |
9311d0c4 | 927 | ERR_raise(ERR_LIB_HTTP, HTTP_R_SOCK_NOT_SUPPORTED); |
29f178bd | 928 | return NULL; |
e8d0819d | 929 | #endif |
4b1fe471 | 930 | } |
29f178bd DDO |
931 | |
932 | (void)ERR_set_mark(); /* prepare removing any spurious libssl errors */ | |
19f97fe6 DDO |
933 | if (rbio == NULL && BIO_do_connect_retry(cbio, overall_timeout, -1) <= 0) { |
934 | if (bio == NULL) /* cbio was not provided by caller */ | |
935 | BIO_free_all(cbio); | |
29f178bd | 936 | goto end; |
19f97fe6 DDO |
937 | } |
938 | /* now overall_timeout is guaranteed to be >= 0 */ | |
29f178bd DDO |
939 | |
940 | /* callback can be used to wrap or prepend TLS session */ | |
941 | if (bio_update_fn != NULL) { | |
942 | BIO *orig_bio = cbio; | |
19f97fe6 | 943 | |
29f178bd DDO |
944 | cbio = (*bio_update_fn)(cbio, arg, 1 /* connect */, use_ssl); |
945 | if (cbio == NULL) { | |
981a5b7c DDO |
946 | if (bio == NULL) /* cbio was not provided by caller */ |
947 | BIO_free_all(orig_bio); | |
29f178bd DDO |
948 | goto end; |
949 | } | |
950 | } | |
951 | ||
19f97fe6 DDO |
952 | rctx = http_req_ctx_new(bio == NULL, cbio, rbio != NULL ? rbio : cbio, |
953 | bio_update_fn, arg, use_ssl, proxy, server, port, | |
be799eb7 | 954 | buf_size, overall_timeout); |
19f97fe6 DDO |
955 | |
956 | end: | |
957 | if (rctx != NULL) | |
958 | /* remove any spurious error queue entries by ssl_add_cert_chain() */ | |
959 | (void)ERR_pop_to_mark(); | |
960 | else | |
961 | (void)ERR_clear_last_mark(); | |
962 | ||
963 | return rctx; | |
964 | } | |
965 | ||
8ccbf00d DDO |
966 | int OSSL_HTTP_set1_request(OSSL_HTTP_REQ_CTX *rctx, const char *path, |
967 | const STACK_OF(CONF_VALUE) *headers, | |
968 | const char *content_type, BIO *req, | |
969 | const char *expected_content_type, int expect_asn1, | |
970 | size_t max_resp_len, int timeout, int keep_alive) | |
19f97fe6 DDO |
971 | { |
972 | int use_http_proxy; | |
973 | ||
974 | if (rctx == NULL) { | |
975 | ERR_raise(ERR_LIB_HTTP, ERR_R_PASSED_NULL_PARAMETER); | |
976 | return 0; | |
977 | } | |
978 | use_http_proxy = rctx->proxy != NULL && !rctx->use_ssl; | |
266383b4 | 979 | if (use_http_proxy && rctx->server == NULL) { |
19f97fe6 DDO |
980 | ERR_raise(ERR_LIB_HTTP, ERR_R_PASSED_INVALID_ARGUMENT); |
981 | return 0; | |
982 | } | |
be799eb7 | 983 | rctx->max_resp_len = max_resp_len; /* allows for 0: indefinite */ |
19f97fe6 | 984 | |
8b5ca511 | 985 | return OSSL_HTTP_REQ_CTX_set_request_line(rctx, req != NULL, |
19f97fe6 DDO |
986 | use_http_proxy ? rctx->server |
987 | : NULL, rctx->port, path) | |
e2c38c1a | 988 | && add1_headers(rctx, headers, rctx->server) |
19f97fe6 DDO |
989 | && OSSL_HTTP_REQ_CTX_set_expected(rctx, expected_content_type, |
990 | expect_asn1, timeout, keep_alive) | |
de5a0198 | 991 | && set1_content(rctx, content_type, req); |
19f97fe6 DDO |
992 | } |
993 | ||
994 | /*- | |
995 | * Exchange single HTTP request and response according to rctx. | |
996 | * If rctx->method_POST then use POST, else use GET and ignore content_type. | |
997 | * The redirection_url output (freed by caller) parameter is used only for GET. | |
998 | */ | |
999 | BIO *OSSL_HTTP_exchange(OSSL_HTTP_REQ_CTX *rctx, char **redirection_url) | |
1000 | { | |
1001 | BIO *resp; | |
1002 | ||
1003 | if (rctx == NULL) { | |
1004 | ERR_raise(ERR_LIB_HTTP, ERR_R_PASSED_NULL_PARAMETER); | |
1005 | return NULL; | |
1006 | } | |
1007 | ||
1008 | if (redirection_url != NULL) | |
1009 | *redirection_url = NULL; /* do this beforehand to prevent dbl free */ | |
29f178bd | 1010 | |
8f965908 | 1011 | resp = OSSL_HTTP_REQ_CTX_exchange(rctx); |
29f178bd DDO |
1012 | if (resp == NULL) { |
1013 | if (rctx->redirection_url != NULL) { | |
1014 | if (redirection_url == NULL) | |
9311d0c4 | 1015 | ERR_raise(ERR_LIB_HTTP, HTTP_R_REDIRECTION_NOT_ENABLED); |
29f178bd DDO |
1016 | else |
1017 | /* may be NULL if out of memory: */ | |
1018 | *redirection_url = OPENSSL_strdup(rctx->redirection_url); | |
1019 | } else { | |
1020 | char buf[200]; | |
1021 | unsigned long err = ERR_peek_error(); | |
1022 | int lib = ERR_GET_LIB(err); | |
1023 | int reason = ERR_GET_REASON(err); | |
1024 | ||
1025 | if (lib == ERR_LIB_SSL || lib == ERR_LIB_HTTP | |
1026 | || (lib == ERR_LIB_BIO && reason == BIO_R_CONNECT_TIMEOUT) | |
1027 | || (lib == ERR_LIB_BIO && reason == BIO_R_CONNECT_ERROR) | |
4b1fe471 | 1028 | #ifndef OPENSSL_NO_CMP |
29f178bd | 1029 | || (lib == ERR_LIB_CMP |
100cc8b0 | 1030 | && reason == CMP_R_POTENTIALLY_INVALID_CERTIFICATE) |
4b1fe471 | 1031 | #endif |
100cc8b0 | 1032 | ) { |
19f97fe6 | 1033 | if (rctx->server != NULL) { |
22fe2b12 DDO |
1034 | BIO_snprintf(buf, sizeof(buf), "server=http%s://%s%s%s", |
1035 | rctx->use_ssl ? "s" : "", rctx->server, | |
1036 | rctx->port != NULL ? ":" : "", | |
1037 | rctx->port != NULL ? rctx->port : ""); | |
1038 | ERR_add_error_data(1, buf); | |
19f97fe6 | 1039 | } |
19f97fe6 DDO |
1040 | if (rctx->proxy != NULL) |
1041 | ERR_add_error_data(2, " proxy=", rctx->proxy); | |
29f178bd | 1042 | if (err == 0) { |
22fe2b12 | 1043 | BIO_snprintf(buf, sizeof(buf), " peer has disconnected%s", |
19f97fe6 | 1044 | rctx->use_ssl ? " violating the protocol" : |
29f178bd DDO |
1045 | ", likely because it requires the use of TLS"); |
1046 | ERR_add_error_data(1, buf); | |
1047 | } | |
1048 | } | |
1049 | } | |
1050 | } | |
6466cc97 DDO |
1051 | |
1052 | if (resp != NULL && !BIO_up_ref(resp)) | |
1053 | resp = NULL; | |
29f178bd DDO |
1054 | return resp; |
1055 | } | |
1056 | ||
1057 | static int redirection_ok(int n_redir, const char *old_url, const char *new_url) | |
1058 | { | |
29f178bd | 1059 | if (n_redir >= HTTP_VERSION_MAX_REDIRECTIONS) { |
9311d0c4 | 1060 | ERR_raise(ERR_LIB_HTTP, HTTP_R_TOO_MANY_REDIRECTIONS); |
29f178bd DDO |
1061 | return 0; |
1062 | } | |
1063 | if (*new_url == '/') /* redirection to same server => same protocol */ | |
1064 | return 1; | |
b6fec965 DDO |
1065 | if (HAS_PREFIX(old_url, OSSL_HTTPS_NAME":") && |
1066 | !HAS_PREFIX(new_url, OSSL_HTTPS_NAME":")) { | |
9311d0c4 | 1067 | ERR_raise(ERR_LIB_HTTP, HTTP_R_REDIRECTION_FROM_HTTPS_TO_HTTP); |
29f178bd DDO |
1068 | return 0; |
1069 | } | |
1070 | return 1; | |
1071 | } | |
1072 | ||
1073 | /* Get data via HTTP from server at given URL, potentially with redirection */ | |
afe554c2 | 1074 | BIO *OSSL_HTTP_get(const char *url, const char *proxy, const char *no_proxy, |
29f178bd DDO |
1075 | BIO *bio, BIO *rbio, |
1076 | OSSL_HTTP_bio_cb_t bio_update_fn, void *arg, | |
68bb06f7 | 1077 | int buf_size, const STACK_OF(CONF_VALUE) *headers, |
8f965908 | 1078 | const char *expected_ct, int expect_asn1, |
c4005c8b | 1079 | size_t max_resp_len, int timeout) |
29f178bd | 1080 | { |
8f965908 | 1081 | char *current_url, *redirection_url = NULL; |
29f178bd DDO |
1082 | int n_redirs = 0; |
1083 | char *host; | |
1084 | char *port; | |
1085 | char *path; | |
1086 | int use_ssl; | |
19f97fe6 | 1087 | OSSL_HTTP_REQ_CTX *rctx; |
29f178bd | 1088 | BIO *resp = NULL; |
f0d5a3b6 | 1089 | time_t max_time = timeout > 0 ? time(NULL) + timeout : 0; |
29f178bd DDO |
1090 | |
1091 | if (url == NULL) { | |
9311d0c4 | 1092 | ERR_raise(ERR_LIB_HTTP, ERR_R_PASSED_NULL_PARAMETER); |
29f178bd DDO |
1093 | return NULL; |
1094 | } | |
1095 | if ((current_url = OPENSSL_strdup(url)) == NULL) | |
1096 | return NULL; | |
1097 | ||
1098 | for (;;) { | |
7932982b DDO |
1099 | if (!OSSL_HTTP_parse_url(current_url, &use_ssl, NULL /* user */, &host, |
1100 | &port, NULL /* port_num */, &path, NULL, NULL)) | |
29f178bd DDO |
1101 | break; |
1102 | ||
19f97fe6 DDO |
1103 | rctx = OSSL_HTTP_open(host, port, proxy, no_proxy, |
1104 | use_ssl, bio, rbio, bio_update_fn, arg, | |
be799eb7 | 1105 | buf_size, timeout); |
8801240b | 1106 | new_rpath: |
19f97fe6 | 1107 | if (rctx != NULL) { |
8ccbf00d DDO |
1108 | if (!OSSL_HTTP_set1_request(rctx, path, headers, |
1109 | NULL /* content_type */, | |
1110 | NULL /* req */, | |
1111 | expected_ct, expect_asn1, max_resp_len, | |
1112 | -1 /* use same max time (timeout) */, | |
1113 | 0 /* no keep_alive */)) | |
19f97fe6 | 1114 | OSSL_HTTP_REQ_CTX_free(rctx); |
8801240b | 1115 | else |
19f97fe6 | 1116 | resp = OSSL_HTTP_exchange(rctx, &redirection_url); |
19f97fe6 | 1117 | } |
29f178bd DDO |
1118 | OPENSSL_free(path); |
1119 | if (resp == NULL && redirection_url != NULL) { | |
f0d5a3b6 DDO |
1120 | if (redirection_ok(++n_redirs, current_url, redirection_url) |
1121 | && may_still_retry(max_time, &timeout)) { | |
29f178bd DDO |
1122 | (void)BIO_reset(bio); |
1123 | OPENSSL_free(current_url); | |
1124 | current_url = redirection_url; | |
1125 | if (*redirection_url == '/') { /* redirection to same server */ | |
1126 | path = OPENSSL_strdup(redirection_url); | |
1127 | goto new_rpath; | |
1128 | } | |
1129 | OPENSSL_free(host); | |
1130 | OPENSSL_free(port); | |
8801240b | 1131 | (void)OSSL_HTTP_close(rctx, 1); |
29f178bd DDO |
1132 | continue; |
1133 | } | |
8801240b | 1134 | /* if redirection not allowed, ignore it */ |
29f178bd DDO |
1135 | OPENSSL_free(redirection_url); |
1136 | } | |
1137 | OPENSSL_free(host); | |
1138 | OPENSSL_free(port); | |
8801240b DDO |
1139 | if (!OSSL_HTTP_close(rctx, resp != NULL)) { |
1140 | BIO_free(resp); | |
1141 | resp = NULL; | |
1142 | } | |
29f178bd DDO |
1143 | break; |
1144 | } | |
1145 | OPENSSL_free(current_url); | |
1146 | return resp; | |
1147 | } | |
1148 | ||
82990287 | 1149 | /* Exchange request and response over a connection managed via |prctx| */ |
19f97fe6 DDO |
1150 | BIO *OSSL_HTTP_transfer(OSSL_HTTP_REQ_CTX **prctx, |
1151 | const char *server, const char *port, | |
1152 | const char *path, int use_ssl, | |
1153 | const char *proxy, const char *no_proxy, | |
1154 | BIO *bio, BIO *rbio, | |
1155 | OSSL_HTTP_bio_cb_t bio_update_fn, void *arg, | |
1156 | int buf_size, const STACK_OF(CONF_VALUE) *headers, | |
1157 | const char *content_type, BIO *req, | |
1158 | const char *expected_ct, int expect_asn1, | |
be799eb7 | 1159 | size_t max_resp_len, int timeout, int keep_alive) |
19f97fe6 DDO |
1160 | { |
1161 | OSSL_HTTP_REQ_CTX *rctx = prctx == NULL ? NULL : *prctx; | |
1162 | BIO *resp = NULL; | |
1163 | ||
1164 | if (rctx == NULL) { | |
1165 | rctx = OSSL_HTTP_open(server, port, proxy, no_proxy, | |
1166 | use_ssl, bio, rbio, bio_update_fn, arg, | |
be799eb7 | 1167 | buf_size, timeout); |
19f97fe6 DDO |
1168 | timeout = -1; /* Already set during opening the connection */ |
1169 | } | |
1170 | if (rctx != NULL) { | |
8ccbf00d DDO |
1171 | if (OSSL_HTTP_set1_request(rctx, path, headers, content_type, req, |
1172 | expected_ct, expect_asn1, | |
1173 | max_resp_len, timeout, keep_alive)) | |
19f97fe6 DDO |
1174 | resp = OSSL_HTTP_exchange(rctx, NULL); |
1175 | if (resp == NULL || !OSSL_HTTP_is_alive(rctx)) { | |
82990287 DDO |
1176 | if (!OSSL_HTTP_close(rctx, resp != NULL)) { |
1177 | BIO_free(resp); | |
19f97fe6 | 1178 | resp = NULL; |
82990287 | 1179 | } |
19f97fe6 DDO |
1180 | rctx = NULL; |
1181 | } | |
1182 | } | |
1183 | if (prctx != NULL) | |
1184 | *prctx = rctx; | |
1185 | return resp; | |
1186 | } | |
1187 | ||
8f965908 | 1188 | int OSSL_HTTP_close(OSSL_HTTP_REQ_CTX *rctx, int ok) |
29f178bd | 1189 | { |
19f97fe6 DDO |
1190 | int ret = 1; |
1191 | ||
1192 | /* callback can be used to clean up TLS session on disconnect */ | |
1193 | if (rctx != NULL && rctx->upd_fn != NULL) | |
1194 | ret = (*rctx->upd_fn)(rctx->wbio, rctx->upd_arg, 0, ok) != NULL; | |
1195 | OSSL_HTTP_REQ_CTX_free(rctx); | |
1196 | return ret; | |
29f178bd DDO |
1197 | } |
1198 | ||
1199 | /* BASE64 encoder used for encoding basic proxy authentication credentials */ | |
1200 | static char *base64encode(const void *buf, size_t len) | |
1201 | { | |
1202 | int i; | |
1203 | size_t outl; | |
1204 | char *out; | |
1205 | ||
1206 | /* Calculate size of encoded data */ | |
1207 | outl = (len / 3); | |
1208 | if (len % 3 > 0) | |
1209 | outl++; | |
1210 | outl <<= 2; | |
1211 | out = OPENSSL_malloc(outl + 1); | |
1212 | if (out == NULL) | |
1213 | return 0; | |
1214 | ||
1215 | i = EVP_EncodeBlock((unsigned char *)out, buf, len); | |
1216 | if (!ossl_assert(0 <= i && (size_t)i <= outl)) { | |
1217 | OPENSSL_free(out); | |
1218 | return NULL; | |
1219 | } | |
1220 | return out; | |
1221 | } | |
1222 | ||
1223 | /* | |
1224 | * Promote the given connection BIO using the CONNECT method for a TLS proxy. | |
1225 | * This is typically called by an app, so bio_err and prog are used unless NULL | |
1226 | * to print additional diagnostic information in a user-oriented way. | |
1227 | */ | |
1228 | int OSSL_HTTP_proxy_connect(BIO *bio, const char *server, const char *port, | |
1229 | const char *proxyuser, const char *proxypass, | |
1230 | int timeout, BIO *bio_err, const char *prog) | |
1231 | { | |
4b1fe471 DDO |
1232 | #undef BUF_SIZE |
1233 | #define BUF_SIZE (8 * 1024) | |
29f178bd DDO |
1234 | char *mbuf = OPENSSL_malloc(BUF_SIZE); |
1235 | char *mbufp; | |
1236 | int read_len = 0; | |
29f178bd DDO |
1237 | int ret = 0; |
1238 | BIO *fbio = BIO_new(BIO_f_buffer()); | |
e8d0819d | 1239 | int rv; |
29f178bd DDO |
1240 | time_t max_time = timeout > 0 ? time(NULL) + timeout : 0; |
1241 | ||
4b1fe471 | 1242 | if (bio == NULL || server == NULL |
29f178bd | 1243 | || (bio_err != NULL && prog == NULL)) { |
9311d0c4 | 1244 | ERR_raise(ERR_LIB_HTTP, ERR_R_PASSED_NULL_PARAMETER); |
29f178bd DDO |
1245 | goto end; |
1246 | } | |
4b1fe471 DDO |
1247 | if (port == NULL || *port == '\0') |
1248 | port = OSSL_HTTPS_PORT; | |
29f178bd DDO |
1249 | |
1250 | if (mbuf == NULL || fbio == NULL) { | |
1251 | BIO_printf(bio_err /* may be NULL */, "%s: out of memory", prog); | |
1252 | goto end; | |
1253 | } | |
1254 | BIO_push(fbio, bio); | |
1255 | ||
19f97fe6 | 1256 | BIO_printf(fbio, "CONNECT %s:%s "HTTP_1_0"\r\n", server, port); |
29f178bd DDO |
1257 | |
1258 | /* | |
1259 | * Workaround for broken proxies which would otherwise close | |
1260 | * the connection when entering tunnel mode (e.g., Squid 2.6) | |
1261 | */ | |
1262 | BIO_printf(fbio, "Proxy-Connection: Keep-Alive\r\n"); | |
1263 | ||
1264 | /* Support for basic (base64) proxy authentication */ | |
1265 | if (proxyuser != NULL) { | |
1266 | size_t len = strlen(proxyuser) + 1; | |
1267 | char *proxyauth, *proxyauthenc = NULL; | |
1268 | ||
1269 | if (proxypass != NULL) | |
1270 | len += strlen(proxypass); | |
1271 | proxyauth = OPENSSL_malloc(len + 1); | |
1272 | if (proxyauth == NULL) | |
1273 | goto end; | |
1274 | if (BIO_snprintf(proxyauth, len + 1, "%s:%s", proxyuser, | |
1275 | proxypass != NULL ? proxypass : "") != (int)len) | |
1276 | goto proxy_end; | |
1277 | proxyauthenc = base64encode(proxyauth, len); | |
1278 | if (proxyauthenc != NULL) { | |
1279 | BIO_printf(fbio, "Proxy-Authorization: Basic %s\r\n", proxyauthenc); | |
1280 | OPENSSL_clear_free(proxyauthenc, strlen(proxyauthenc)); | |
1281 | } | |
a6d40689 | 1282 | proxy_end: |
29f178bd DDO |
1283 | OPENSSL_clear_free(proxyauth, len); |
1284 | if (proxyauthenc == NULL) | |
1285 | goto end; | |
1286 | } | |
1287 | ||
1288 | /* Terminate the HTTP CONNECT request */ | |
1289 | BIO_printf(fbio, "\r\n"); | |
1290 | ||
1291 | for (;;) { | |
1292 | if (BIO_flush(fbio) != 0) | |
1293 | break; | |
1294 | /* potentially needs to be retried if BIO is non-blocking */ | |
1295 | if (!BIO_should_retry(fbio)) | |
1296 | break; | |
1297 | } | |
1298 | ||
1299 | for (;;) { | |
1300 | /* will not actually wait if timeout == 0 */ | |
e8d0819d | 1301 | rv = BIO_wait(fbio, max_time, 100 /* milliseconds */); |
29f178bd DDO |
1302 | if (rv <= 0) { |
1303 | BIO_printf(bio_err, "%s: HTTP CONNECT %s\n", prog, | |
1304 | rv == 0 ? "timed out" : "failed waiting for data"); | |
1305 | goto end; | |
1306 | } | |
1307 | ||
1308 | /*- | |
1309 | * The first line is the HTTP response. | |
1310 | * According to RFC 7230, it is formatted exactly like this: | |
552aeaef | 1311 | * HTTP/d.d ddd reason text\r\n |
29f178bd DDO |
1312 | */ |
1313 | read_len = BIO_gets(fbio, mbuf, BUF_SIZE); | |
1314 | /* the BIO may not block, so we must wait for the 1st line to come in */ | |
765860a3 | 1315 | if (read_len < (int)HTTP_LINE1_MINLEN) |
29f178bd DDO |
1316 | continue; |
1317 | ||
19f97fe6 | 1318 | /* Check for HTTP/1.x */ |
2ff286c2 DDO |
1319 | mbufp = mbuf; |
1320 | if (!HAS_PREFIX(mbufp, HTTP_PREFIX)) { | |
19f97fe6 | 1321 | ERR_raise(ERR_LIB_HTTP, HTTP_R_HEADER_PARSE_ERROR); |
29f178bd DDO |
1322 | BIO_printf(bio_err, "%s: HTTP CONNECT failed, non-HTTP response\n", |
1323 | prog); | |
1324 | /* Wrong protocol, not even HTTP, so stop reading headers */ | |
1325 | goto end; | |
1326 | } | |
2ff286c2 | 1327 | if (!HAS_PREFIX(mbufp, HTTP_VERSION_PATT)) { |
9311d0c4 | 1328 | ERR_raise(ERR_LIB_HTTP, HTTP_R_RECEIVED_WRONG_HTTP_VERSION); |
29f178bd DDO |
1329 | BIO_printf(bio_err, |
1330 | "%s: HTTP CONNECT failed, bad HTTP version %.*s\n", | |
19f97fe6 | 1331 | prog, (int)HTTP_VERSION_STR_LEN, mbufp); |
29f178bd DDO |
1332 | goto end; |
1333 | } | |
1334 | mbufp += HTTP_VERSION_STR_LEN; | |
19f97fe6 DDO |
1335 | |
1336 | /* RFC 7231 4.3.6: any 2xx status code is valid */ | |
b6fec965 | 1337 | if (!HAS_PREFIX(mbufp, " 2")) { |
29f178bd DDO |
1338 | /* chop any trailing whitespace */ |
1339 | while (read_len > 0 && ossl_isspace(mbuf[read_len - 1])) | |
1340 | read_len--; | |
1341 | mbuf[read_len] = '\0'; | |
a150f8e1 | 1342 | ERR_raise_data(ERR_LIB_HTTP, HTTP_R_CONNECT_FAILURE, |
552aeaef DDO |
1343 | "reason=%s", mbufp); |
1344 | BIO_printf(bio_err, "%s: HTTP CONNECT failed, reason=%s\n", | |
29f178bd DDO |
1345 | prog, mbufp); |
1346 | goto end; | |
1347 | } | |
1348 | ret = 1; | |
1349 | break; | |
1350 | } | |
1351 | ||
1352 | /* Read past all following headers */ | |
1353 | do { | |
1354 | /* | |
60e91cc4 | 1355 | * This does not necessarily catch the case when the full |
29f178bd DDO |
1356 | * HTTP response came in in more than a single TCP message. |
1357 | */ | |
1358 | read_len = BIO_gets(fbio, mbuf, BUF_SIZE); | |
1359 | } while (read_len > 2); | |
1360 | ||
1361 | end: | |
1362 | if (fbio != NULL) { | |
1363 | (void)BIO_flush(fbio); | |
1364 | BIO_pop(fbio); | |
1365 | BIO_free(fbio); | |
1366 | } | |
1367 | OPENSSL_free(mbuf); | |
1368 | return ret; | |
4b1fe471 | 1369 | #undef BUF_SIZE |
29f178bd | 1370 | } |