2 * HTTP protocol for ffmpeg client
3 * Copyright (c) 2000, 2001 Fabrice Bellard
5 * This file is part of FFmpeg.
7 * FFmpeg is free software; you can redistribute it and/or
8 * modify it under the terms of the GNU Lesser General Public
9 * License as published by the Free Software Foundation; either
10 * version 2.1 of the License, or (at your option) any later version.
12 * FFmpeg is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15 * Lesser General Public License for more details.
17 * You should have received a copy of the GNU Lesser General Public
18 * License along with FFmpeg; if not, write to the Free Software
19 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
26 #endif /* CONFIG_ZLIB */
28 #include "libavutil/avassert.h"
29 #include "libavutil/avstring.h"
30 #include "libavutil/opt.h"
31 #include "libavutil/time.h"
38 #include "os_support.h"
41 /* XXX: POST protocol is not completely implemented because ffmpeg uses
42 * only a subset of it. */
44 /* The IO buffer size is unrelated to the max URL size in itself, but needs
45 * to be large enough to fit the full request headers (including long
47 #define BUFFER_SIZE MAX_URL_SIZE
48 #define MAX_REDIRECTS 8
58 typedef struct HTTPContext {
61 unsigned char buffer[BUFFER_SIZE], *buf_ptr, *buf_end;
64 /* Used if "Transfer-Encoding: chunked" otherwise -1. */
66 int64_t off, end_off, filesize;
68 HTTPAuthState auth_state;
69 HTTPAuthState proxy_auth_state;
75 /* Set if the server correctly handles Connection: close and will close
76 * the connection after feeding us the content. */
78 int seekable; /**< Control seekability, 0 = disable, 1 = enable, -1 = probe. */
80 /* A flag which indicates if the end of chunked encoding has been sent. */
82 /* A flag which indicates we have finished to read POST reply. */
84 /* A flag which indicates if we use persistent connections. */
85 int multiple_requests;
90 char *cookies; ///< holds newline (\n) delimited Set-Cookie header field values (without the "Set-Cookie: " field name)
91 /* A dictionary containing cookies keyed by cookie name */
92 AVDictionary *cookie_dict;
94 /* how much data was read since the last ICY metadata packet */
96 /* after how many bytes of read data a new metadata packet will be found */
98 char *icy_metadata_headers;
99 char *icy_metadata_packet;
100 AVDictionary *metadata;
103 z_stream inflate_stream;
104 uint8_t *inflate_buffer;
105 #endif /* CONFIG_ZLIB */
106 AVDictionary *chained_options;
110 int reconnect_at_eof;
111 int reconnect_streamed;
113 int reconnect_delay_max;
118 HandshakeState handshake_step;
119 int is_connected_server;
122 #define OFFSET(x) offsetof(HTTPContext, x)
123 #define D AV_OPT_FLAG_DECODING_PARAM
124 #define E AV_OPT_FLAG_ENCODING_PARAM
125 #define DEFAULT_USER_AGENT "Lavf/" AV_STRINGIFY(LIBAVFORMAT_VERSION)
127 static const AVOption options[] = {
128 { "seekable", "control seekability of connection", OFFSET(seekable), AV_OPT_TYPE_BOOL, { .i64 = -1 }, -1, 1, D },
129 { "chunked_post", "use chunked transfer-encoding for posts", OFFSET(chunked_post), AV_OPT_TYPE_BOOL, { .i64 = 1 }, 0, 1, E },
130 { "http_proxy", "set HTTP proxy to tunnel through", OFFSET(http_proxy), AV_OPT_TYPE_STRING, { .str = NULL }, 0, 0, D | E },
131 { "headers", "set custom HTTP headers, can override built in default headers", OFFSET(headers), AV_OPT_TYPE_STRING, { .str = NULL }, 0, 0, D | E },
132 { "content_type", "set a specific content type for the POST messages", OFFSET(content_type), AV_OPT_TYPE_STRING, { .str = NULL }, 0, 0, D | E },
133 { "user_agent", "override User-Agent header", OFFSET(user_agent), AV_OPT_TYPE_STRING, { .str = DEFAULT_USER_AGENT }, 0, 0, D },
134 { "user-agent", "override User-Agent header", OFFSET(user_agent), AV_OPT_TYPE_STRING, { .str = DEFAULT_USER_AGENT }, 0, 0, D },
135 { "multiple_requests", "use persistent connections", OFFSET(multiple_requests), AV_OPT_TYPE_BOOL, { .i64 = 0 }, 0, 1, D | E },
136 { "post_data", "set custom HTTP post data", OFFSET(post_data), AV_OPT_TYPE_BINARY, .flags = D | E },
137 { "mime_type", "export the MIME type", OFFSET(mime_type), AV_OPT_TYPE_STRING, { .str = NULL }, 0, 0, AV_OPT_FLAG_EXPORT | AV_OPT_FLAG_READONLY },
138 { "cookies", "set cookies to be sent in applicable future requests, use newline delimited Set-Cookie HTTP field value syntax", OFFSET(cookies), AV_OPT_TYPE_STRING, { .str = NULL }, 0, 0, D },
139 { "icy", "request ICY metadata", OFFSET(icy), AV_OPT_TYPE_BOOL, { .i64 = 1 }, 0, 1, D },
140 { "icy_metadata_headers", "return ICY metadata headers", OFFSET(icy_metadata_headers), AV_OPT_TYPE_STRING, { .str = NULL }, 0, 0, AV_OPT_FLAG_EXPORT },
141 { "icy_metadata_packet", "return current ICY metadata packet", OFFSET(icy_metadata_packet), AV_OPT_TYPE_STRING, { .str = NULL }, 0, 0, AV_OPT_FLAG_EXPORT },
142 { "metadata", "metadata read from the bitstream", OFFSET(metadata), AV_OPT_TYPE_DICT, {0}, 0, 0, AV_OPT_FLAG_EXPORT },
143 { "auth_type", "HTTP authentication type", OFFSET(auth_state.auth_type), AV_OPT_TYPE_INT, { .i64 = HTTP_AUTH_NONE }, HTTP_AUTH_NONE, HTTP_AUTH_BASIC, D | E, "auth_type"},
144 { "none", "No auth method set, autodetect", 0, AV_OPT_TYPE_CONST, { .i64 = HTTP_AUTH_NONE }, 0, 0, D | E, "auth_type"},
145 { "basic", "HTTP basic authentication", 0, AV_OPT_TYPE_CONST, { .i64 = HTTP_AUTH_BASIC }, 0, 0, D | E, "auth_type"},
146 { "send_expect_100", "Force sending an Expect: 100-continue header for POST", OFFSET(send_expect_100), AV_OPT_TYPE_BOOL, { .i64 = 0 }, 0, 1, E },
147 { "location", "The actual location of the data received", OFFSET(location), AV_OPT_TYPE_STRING, { .str = NULL }, 0, 0, D | E },
148 { "offset", "initial byte offset", OFFSET(off), AV_OPT_TYPE_INT64, { .i64 = 0 }, 0, INT64_MAX, D },
149 { "end_offset", "try to limit the request to bytes preceding this offset", OFFSET(end_off), AV_OPT_TYPE_INT64, { .i64 = 0 }, 0, INT64_MAX, D },
150 { "method", "Override the HTTP method or set the expected HTTP method from a client", OFFSET(method), AV_OPT_TYPE_STRING, { .str = NULL }, 0, 0, D | E },
151 { "reconnect", "auto reconnect after disconnect before EOF", OFFSET(reconnect), AV_OPT_TYPE_BOOL, { .i64 = 0 }, 0, 1, D },
152 { "reconnect_at_eof", "auto reconnect at EOF", OFFSET(reconnect_at_eof), AV_OPT_TYPE_BOOL, { .i64 = 0 }, 0, 1, D },
153 { "reconnect_streamed", "auto reconnect streamed / non seekable streams", OFFSET(reconnect_streamed), AV_OPT_TYPE_BOOL, { .i64 = 0 }, 0, 1, D },
154 { "reconnect_delay_max", "max reconnect delay in seconds after which to give up", OFFSET(reconnect_delay_max), AV_OPT_TYPE_INT, { .i64 = 120 }, 0, UINT_MAX/1000/1000, D },
155 { "listen", "listen on HTTP", OFFSET(listen), AV_OPT_TYPE_INT, { .i64 = 0 }, 0, 2, D | E },
156 { "resource", "The resource requested by a client", OFFSET(resource), AV_OPT_TYPE_STRING, { .str = NULL }, 0, 0, E },
157 { "reply_code", "The http status code to return to a client", OFFSET(reply_code), AV_OPT_TYPE_INT, { .i64 = 200}, INT_MIN, 599, E},
161 static int http_connect(URLContext *h, const char *path, const char *local_path,
162 const char *hoststr, const char *auth,
163 const char *proxyauth, int *new_location);
164 static int http_read_header(URLContext *h, int *new_location);
166 void ff_http_init_auth_state(URLContext *dest, const URLContext *src)
168 memcpy(&((HTTPContext *)dest->priv_data)->auth_state,
169 &((HTTPContext *)src->priv_data)->auth_state,
170 sizeof(HTTPAuthState));
171 memcpy(&((HTTPContext *)dest->priv_data)->proxy_auth_state,
172 &((HTTPContext *)src->priv_data)->proxy_auth_state,
173 sizeof(HTTPAuthState));
176 static int http_open_cnx_internal(URLContext *h, AVDictionary **options)
178 const char *path, *proxy_path, *lower_proto = "tcp", *local_path;
179 char hostname[1024], hoststr[1024], proto[10];
180 char auth[1024], proxyauth[1024] = "";
181 char path1[MAX_URL_SIZE];
182 char buf[1024], urlbuf[MAX_URL_SIZE];
183 int port, use_proxy, err, location_changed = 0;
184 HTTPContext *s = h->priv_data;
186 av_url_split(proto, sizeof(proto), auth, sizeof(auth),
187 hostname, sizeof(hostname), &port,
188 path1, sizeof(path1), s->location);
189 ff_url_join(hoststr, sizeof(hoststr), NULL, NULL, hostname, port, NULL);
191 proxy_path = s->http_proxy ? s->http_proxy : getenv("http_proxy");
192 use_proxy = !ff_http_match_no_proxy(getenv("no_proxy"), hostname) &&
193 proxy_path && av_strstart(proxy_path, "http://", NULL);
195 if (!strcmp(proto, "https")) {
204 if (path1[0] == '\0')
210 /* Reassemble the request URL without auth string - we don't
211 * want to leak the auth to the proxy. */
212 ff_url_join(urlbuf, sizeof(urlbuf), proto, NULL, hostname, port, "%s",
215 av_url_split(NULL, 0, proxyauth, sizeof(proxyauth),
216 hostname, sizeof(hostname), &port, NULL, 0, proxy_path);
219 ff_url_join(buf, sizeof(buf), lower_proto, NULL, hostname, port, NULL);
222 err = ffurl_open(&s->hd, buf, AVIO_FLAG_READ_WRITE,
223 &h->interrupt_callback, options);
228 err = http_connect(h, path, local_path, hoststr,
229 auth, proxyauth, &location_changed);
233 return location_changed;
236 /* return non zero if error */
237 static int http_open_cnx(URLContext *h, AVDictionary **options)
239 HTTPAuthType cur_auth_type, cur_proxy_auth_type;
240 HTTPContext *s = h->priv_data;
241 int location_changed, attempts = 0, redirects = 0;
243 av_dict_copy(options, s->chained_options, 0);
245 cur_auth_type = s->auth_state.auth_type;
246 cur_proxy_auth_type = s->auth_state.auth_type;
248 location_changed = http_open_cnx_internal(h, options);
249 if (location_changed < 0)
253 if (s->http_code == 401) {
254 if ((cur_auth_type == HTTP_AUTH_NONE || s->auth_state.stale) &&
255 s->auth_state.auth_type != HTTP_AUTH_NONE && attempts < 4) {
256 ffurl_closep(&s->hd);
261 if (s->http_code == 407) {
262 if ((cur_proxy_auth_type == HTTP_AUTH_NONE || s->proxy_auth_state.stale) &&
263 s->proxy_auth_state.auth_type != HTTP_AUTH_NONE && attempts < 4) {
264 ffurl_closep(&s->hd);
269 if ((s->http_code == 301 || s->http_code == 302 ||
270 s->http_code == 303 || s->http_code == 307) &&
271 location_changed == 1) {
272 /* url moved, get next */
273 ffurl_closep(&s->hd);
274 if (redirects++ >= MAX_REDIRECTS)
276 /* Restart the authentication process with the new target, which
277 * might use a different auth mechanism. */
278 memset(&s->auth_state, 0, sizeof(s->auth_state));
280 location_changed = 0;
287 ffurl_closep(&s->hd);
288 if (location_changed < 0)
289 return location_changed;
290 return ff_http_averror(s->http_code, AVERROR(EIO));
293 int ff_http_do_new_request(URLContext *h, const char *uri)
295 HTTPContext *s = h->priv_data;
296 AVDictionary *options = NULL;
300 s->icy_data_read = 0;
301 av_free(s->location);
302 s->location = av_strdup(uri);
304 return AVERROR(ENOMEM);
306 ret = http_open_cnx(h, &options);
307 av_dict_free(&options);
311 int ff_http_averror(int status_code, int default_averror)
313 switch (status_code) {
314 case 400: return AVERROR_HTTP_BAD_REQUEST;
315 case 401: return AVERROR_HTTP_UNAUTHORIZED;
316 case 403: return AVERROR_HTTP_FORBIDDEN;
317 case 404: return AVERROR_HTTP_NOT_FOUND;
320 if (status_code >= 400 && status_code <= 499)
321 return AVERROR_HTTP_OTHER_4XX;
322 else if (status_code >= 500)
323 return AVERROR_HTTP_SERVER_ERROR;
325 return default_averror;
328 static int http_write_reply(URLContext* h, int status_code)
330 int ret, body = 0, reply_code, message_len;
331 const char *reply_text, *content_type;
332 HTTPContext *s = h->priv_data;
333 char message[BUFFER_SIZE];
334 content_type = "text/plain";
338 switch (status_code) {
339 case AVERROR_HTTP_BAD_REQUEST:
342 reply_text = "Bad Request";
344 case AVERROR_HTTP_FORBIDDEN:
347 reply_text = "Forbidden";
349 case AVERROR_HTTP_NOT_FOUND:
352 reply_text = "Not Found";
357 content_type = "application/octet-stream";
359 case AVERROR_HTTP_SERVER_ERROR:
362 reply_text = "Internal server error";
365 return AVERROR(EINVAL);
369 message_len = snprintf(message, sizeof(message),
370 "HTTP/1.1 %03d %s\r\n"
371 "Content-Type: %s\r\n"
372 "Content-Length: %zu\r\n"
378 strlen(reply_text) + 6, // 3 digit status code + space + \r\n
383 message_len = snprintf(message, sizeof(message),
384 "HTTP/1.1 %03d %s\r\n"
385 "Content-Type: %s\r\n"
386 "Transfer-Encoding: chunked\r\n"
392 av_log(h, AV_LOG_TRACE, "HTTP reply header: \n%s----\n", message);
393 if ((ret = ffurl_write(s->hd, message, message_len)) < 0)
398 static void handle_http_errors(URLContext *h, int error)
400 av_assert0(error < 0);
401 http_write_reply(h, error);
404 static int http_handshake(URLContext *c)
406 int ret, err, new_location;
407 HTTPContext *ch = c->priv_data;
408 URLContext *cl = ch->hd;
409 switch (ch->handshake_step) {
411 av_log(c, AV_LOG_TRACE, "Lower protocol\n");
412 if ((ret = ffurl_handshake(cl)) > 0)
416 ch->handshake_step = READ_HEADERS;
417 ch->is_connected_server = 1;
420 av_log(c, AV_LOG_TRACE, "Read headers\n");
421 if ((err = http_read_header(c, &new_location)) < 0) {
422 handle_http_errors(c, err);
425 ch->handshake_step = WRITE_REPLY_HEADERS;
427 case WRITE_REPLY_HEADERS:
428 av_log(c, AV_LOG_TRACE, "Reply code: %d\n", ch->reply_code);
429 if ((err = http_write_reply(c, ch->reply_code)) < 0)
431 ch->handshake_step = FINISH;
436 // this should never be reached.
437 return AVERROR(EINVAL);
440 static int http_listen(URLContext *h, const char *uri, int flags,
441 AVDictionary **options) {
442 HTTPContext *s = h->priv_data;
444 char hostname[1024], proto[10];
446 const char *lower_proto = "tcp";
448 av_url_split(proto, sizeof(proto), NULL, 0, hostname, sizeof(hostname), &port,
450 if (!strcmp(proto, "https"))
452 ff_url_join(lower_url, sizeof(lower_url), lower_proto, NULL, hostname, port,
454 if ((ret = av_dict_set_int(options, "listen", s->listen, 0)) < 0)
456 if ((ret = ffurl_open(&s->hd, lower_url, AVIO_FLAG_READ_WRITE,
457 &h->interrupt_callback, options)) < 0)
459 s->handshake_step = LOWER_PROTO;
460 if (s->listen == HTTP_SINGLE) { /* single client */
462 while ((ret = http_handshake(h)) > 0);
465 av_dict_free(&s->chained_options);
469 static int http_open(URLContext *h, const char *uri, int flags,
470 AVDictionary **options)
472 HTTPContext *s = h->priv_data;
475 if( s->seekable == 1 )
481 s->location = av_strdup(uri);
483 return AVERROR(ENOMEM);
485 av_dict_copy(&s->chained_options, *options, 0);
488 int len = strlen(s->headers);
489 if (len < 2 || strcmp("\r\n", s->headers + len - 2)) {
490 av_log(h, AV_LOG_WARNING,
491 "No trailing CRLF found in HTTP header.\n");
492 ret = av_reallocp(&s->headers, len + 3);
495 s->headers[len] = '\r';
496 s->headers[len + 1] = '\n';
497 s->headers[len + 2] = '\0';
502 return http_listen(h, uri, flags, options);
504 ret = http_open_cnx(h, options);
506 av_dict_free(&s->chained_options);
510 static int http_accept(URLContext *s, URLContext **c)
513 HTTPContext *sc = s->priv_data;
515 URLContext *sl = sc->hd;
516 URLContext *cl = NULL;
518 av_assert0(sc->listen);
519 if ((ret = ffurl_alloc(c, s->filename, s->flags, &sl->interrupt_callback)) < 0)
521 cc = (*c)->priv_data;
522 if ((ret = ffurl_accept(sl, &cl)) < 0)
525 cc->is_multi_client = 1;
530 static int http_getc(HTTPContext *s)
533 if (s->buf_ptr >= s->buf_end) {
534 len = ffurl_read(s->hd, s->buffer, BUFFER_SIZE);
537 } else if (len == 0) {
540 s->buf_ptr = s->buffer;
541 s->buf_end = s->buffer + len;
544 return *s->buf_ptr++;
547 static int http_get_line(HTTPContext *s, char *line, int line_size)
559 if (q > line && q[-1] == '\r')
565 if ((q - line) < line_size - 1)
571 static int check_http_code(URLContext *h, int http_code, const char *end)
573 HTTPContext *s = h->priv_data;
574 /* error codes are 4xx and 5xx, but regard 401 as a success, so we
575 * don't abort until all headers have been parsed. */
576 if (http_code >= 400 && http_code < 600 &&
577 (http_code != 401 || s->auth_state.auth_type != HTTP_AUTH_NONE) &&
578 (http_code != 407 || s->proxy_auth_state.auth_type != HTTP_AUTH_NONE)) {
579 end += strspn(end, SPACE_CHARS);
580 av_log(h, AV_LOG_WARNING, "HTTP error %d %s\n", http_code, end);
581 return ff_http_averror(http_code, AVERROR(EIO));
586 static int parse_location(HTTPContext *s, const char *p)
588 char redirected_location[MAX_URL_SIZE], *new_loc;
589 ff_make_absolute_url(redirected_location, sizeof(redirected_location),
591 new_loc = av_strdup(redirected_location);
593 return AVERROR(ENOMEM);
594 av_free(s->location);
595 s->location = new_loc;
599 /* "bytes $from-$to/$document_size" */
600 static void parse_content_range(URLContext *h, const char *p)
602 HTTPContext *s = h->priv_data;
605 if (!strncmp(p, "bytes ", 6)) {
607 s->off = strtoll(p, NULL, 10);
608 if ((slash = strchr(p, '/')) && strlen(slash) > 0)
609 s->filesize = strtoll(slash + 1, NULL, 10);
611 if (s->seekable == -1 && (!s->is_akamai || s->filesize != 2147483647))
612 h->is_streamed = 0; /* we _can_ in fact seek */
615 static int parse_content_encoding(URLContext *h, const char *p)
617 if (!av_strncasecmp(p, "gzip", 4) ||
618 !av_strncasecmp(p, "deflate", 7)) {
620 HTTPContext *s = h->priv_data;
623 inflateEnd(&s->inflate_stream);
624 if (inflateInit2(&s->inflate_stream, 32 + 15) != Z_OK) {
625 av_log(h, AV_LOG_WARNING, "Error during zlib initialisation: %s\n",
626 s->inflate_stream.msg);
627 return AVERROR(ENOSYS);
629 if (zlibCompileFlags() & (1 << 17)) {
630 av_log(h, AV_LOG_WARNING,
631 "Your zlib was compiled without gzip support.\n");
632 return AVERROR(ENOSYS);
635 av_log(h, AV_LOG_WARNING,
636 "Compressed (%s) content, need zlib with gzip support\n", p);
637 return AVERROR(ENOSYS);
638 #endif /* CONFIG_ZLIB */
639 } else if (!av_strncasecmp(p, "identity", 8)) {
640 // The normal, no-encoding case (although servers shouldn't include
641 // the header at all if this is the case).
643 av_log(h, AV_LOG_WARNING, "Unknown content coding: %s\n", p);
648 // Concat all Icy- header lines
649 static int parse_icy(HTTPContext *s, const char *tag, const char *p)
651 int len = 4 + strlen(p) + strlen(tag);
652 int is_first = !s->icy_metadata_headers;
655 av_dict_set(&s->metadata, tag, p, 0);
657 if (s->icy_metadata_headers)
658 len += strlen(s->icy_metadata_headers);
660 if ((ret = av_reallocp(&s->icy_metadata_headers, len)) < 0)
664 *s->icy_metadata_headers = '\0';
666 av_strlcatf(s->icy_metadata_headers, len, "%s: %s\n", tag, p);
671 static int parse_cookie(HTTPContext *s, const char *p, AVDictionary **cookies)
675 // duplicate the cookie name (dict will dupe the value)
676 if (!(eql = strchr(p, '='))) return AVERROR(EINVAL);
677 if (!(name = av_strndup(p, eql - p))) return AVERROR(ENOMEM);
679 // add the cookie to the dictionary
680 av_dict_set(cookies, name, eql, AV_DICT_DONT_STRDUP_KEY);
685 static int cookie_string(AVDictionary *dict, char **cookies)
687 AVDictionaryEntry *e = NULL;
690 // determine how much memory is needed for the cookies string
691 while (e = av_dict_get(dict, "", e, AV_DICT_IGNORE_SUFFIX))
692 len += strlen(e->key) + strlen(e->value) + 1;
694 // reallocate the cookies
696 if (*cookies) av_free(*cookies);
697 *cookies = av_malloc(len);
698 if (!*cookies) return AVERROR(ENOMEM);
701 // write out the cookies
702 while (e = av_dict_get(dict, "", e, AV_DICT_IGNORE_SUFFIX))
703 av_strlcatf(*cookies, len, "%s%s\n", e->key, e->value);
708 static int process_line(URLContext *h, char *line, int line_count,
711 HTTPContext *s = h->priv_data;
712 const char *auto_method = h->flags & AVIO_FLAG_READ ? "POST" : "GET";
713 char *tag, *p, *end, *method, *resource, *version;
717 if (line[0] == '\0') {
723 if (line_count == 0) {
724 if (s->is_connected_server) {
727 while (*p && !av_isspace(*p))
730 av_log(h, AV_LOG_TRACE, "Received method: %s\n", method);
732 if (av_strcasecmp(s->method, method)) {
733 av_log(h, AV_LOG_ERROR, "Received and expected HTTP method do not match. (%s expected, %s received)\n",
735 return ff_http_averror(400, AVERROR(EIO));
738 // use autodetected HTTP method to expect
739 av_log(h, AV_LOG_TRACE, "Autodetected %s HTTP method\n", auto_method);
740 if (av_strcasecmp(auto_method, method)) {
741 av_log(h, AV_LOG_ERROR, "Received and autodetected HTTP method did not match "
742 "(%s autodetected %s received)\n", auto_method, method);
743 return ff_http_averror(400, AVERROR(EIO));
745 if (!(s->method = av_strdup(method)))
746 return AVERROR(ENOMEM);
750 while (av_isspace(*p))
753 while (!av_isspace(*p))
756 av_log(h, AV_LOG_TRACE, "Requested resource: %s\n", resource);
757 if (!(s->resource = av_strdup(resource)))
758 return AVERROR(ENOMEM);
761 while (av_isspace(*p))
764 while (*p && !av_isspace(*p))
767 if (av_strncasecmp(version, "HTTP/", 5)) {
768 av_log(h, AV_LOG_ERROR, "Malformed HTTP version string.\n");
769 return ff_http_averror(400, AVERROR(EIO));
771 av_log(h, AV_LOG_TRACE, "HTTP version string: %s\n", version);
773 while (!av_isspace(*p) && *p != '\0')
775 while (av_isspace(*p))
777 s->http_code = strtol(p, &end, 10);
779 av_log(h, AV_LOG_TRACE, "http_code=%d\n", s->http_code);
781 if ((ret = check_http_code(h, s->http_code, end)) < 0)
785 while (*p != '\0' && *p != ':')
793 while (av_isspace(*p))
795 if (!av_strcasecmp(tag, "Location")) {
796 if ((ret = parse_location(s, p)) < 0)
799 } else if (!av_strcasecmp(tag, "Content-Length") && s->filesize == -1) {
800 s->filesize = strtoll(p, NULL, 10);
801 } else if (!av_strcasecmp(tag, "Content-Range")) {
802 parse_content_range(h, p);
803 } else if (!av_strcasecmp(tag, "Accept-Ranges") &&
804 !strncmp(p, "bytes", 5) &&
807 } else if (!av_strcasecmp(tag, "Transfer-Encoding") &&
808 !av_strncasecmp(p, "chunked", 7)) {
811 } else if (!av_strcasecmp(tag, "WWW-Authenticate")) {
812 ff_http_auth_handle_header(&s->auth_state, tag, p);
813 } else if (!av_strcasecmp(tag, "Authentication-Info")) {
814 ff_http_auth_handle_header(&s->auth_state, tag, p);
815 } else if (!av_strcasecmp(tag, "Proxy-Authenticate")) {
816 ff_http_auth_handle_header(&s->proxy_auth_state, tag, p);
817 } else if (!av_strcasecmp(tag, "Connection")) {
818 if (!strcmp(p, "close"))
820 } else if (!av_strcasecmp(tag, "Server")) {
821 if (!av_strcasecmp(p, "AkamaiGHost")) {
823 } else if (!av_strncasecmp(p, "MediaGateway", 12)) {
824 s->is_mediagateway = 1;
826 } else if (!av_strcasecmp(tag, "Content-Type")) {
827 av_free(s->mime_type);
828 s->mime_type = av_strdup(p);
829 } else if (!av_strcasecmp(tag, "Set-Cookie")) {
830 if (parse_cookie(s, p, &s->cookie_dict))
831 av_log(h, AV_LOG_WARNING, "Unable to parse '%s'\n", p);
832 } else if (!av_strcasecmp(tag, "Icy-MetaInt")) {
833 s->icy_metaint = strtoll(p, NULL, 10);
834 } else if (!av_strncasecmp(tag, "Icy-", 4)) {
835 if ((ret = parse_icy(s, tag, p)) < 0)
837 } else if (!av_strcasecmp(tag, "Content-Encoding")) {
838 if ((ret = parse_content_encoding(h, p)) < 0)
846 * Create a string containing cookie values for use as a HTTP cookie header
847 * field value for a particular path and domain from the cookie values stored in
848 * the HTTP protocol context. The cookie string is stored in *cookies.
850 * @return a negative value if an error condition occurred, 0 otherwise
852 static int get_cookies(HTTPContext *s, char **cookies, const char *path,
855 // cookie strings will look like Set-Cookie header field values. Multiple
856 // Set-Cookie fields will result in multiple values delimited by a newline
858 char *next, *cookie, *set_cookies = av_strdup(s->cookies), *cset_cookies = set_cookies;
860 if (!set_cookies) return AVERROR(EINVAL);
862 // destroy any cookies in the dictionary.
863 av_dict_free(&s->cookie_dict);
866 while ((cookie = av_strtok(set_cookies, "\n", &next))) {
867 int domain_offset = 0;
868 char *param, *next_param, *cdomain = NULL, *cpath = NULL, *cvalue = NULL;
871 // store the cookie in a dict in case it is updated in the response
872 if (parse_cookie(s, cookie, &s->cookie_dict))
873 av_log(s, AV_LOG_WARNING, "Unable to parse '%s'\n", cookie);
875 while ((param = av_strtok(cookie, "; ", &next_param))) {
877 // first key-value pair is the actual cookie value
878 cvalue = av_strdup(param);
880 } else if (!av_strncasecmp("path=", param, 5)) {
882 cpath = av_strdup(¶m[5]);
883 } else if (!av_strncasecmp("domain=", param, 7)) {
884 // if the cookie specifies a sub-domain, skip the leading dot thereby
885 // supporting URLs that point to sub-domains and the master domain
886 int leading_dot = (param[7] == '.');
888 cdomain = av_strdup(¶m[7+leading_dot]);
890 // ignore unknown attributes
894 cdomain = av_strdup(domain);
896 // ensure all of the necessary values are valid
897 if (!cdomain || !cpath || !cvalue) {
898 av_log(s, AV_LOG_WARNING,
899 "Invalid cookie found, no value, path or domain specified\n");
903 // check if the request path matches the cookie path
904 if (av_strncasecmp(path, cpath, strlen(cpath)))
907 // the domain should be at least the size of our cookie domain
908 domain_offset = strlen(domain) - strlen(cdomain);
909 if (domain_offset < 0)
912 // match the cookie domain
913 if (av_strcasecmp(&domain[domain_offset], cdomain))
916 // cookie parameters match, so copy the value
918 if (!(*cookies = av_strdup(cvalue))) {
919 ret = AVERROR(ENOMEM);
923 char *tmp = *cookies;
924 size_t str_size = strlen(cvalue) + strlen(*cookies) + 3;
925 if (!(*cookies = av_malloc(str_size))) {
926 ret = AVERROR(ENOMEM);
929 snprintf(*cookies, str_size, "%s; %s", tmp, cvalue);
938 if (*cookies) av_freep(cookies);
939 av_free(cset_cookies);
944 av_free(cset_cookies);
949 static inline int has_header(const char *str, const char *header)
951 /* header + 2 to skip over CRLF prefix. (make sure you have one!) */
954 return av_stristart(str, header + 2, NULL) || av_stristr(str, header);
957 static int http_read_header(URLContext *h, int *new_location)
959 HTTPContext *s = h->priv_data;
960 char line[MAX_URL_SIZE];
966 if ((err = http_get_line(s, line, sizeof(line))) < 0)
969 av_log(h, AV_LOG_TRACE, "header='%s'\n", line);
971 err = process_line(h, line, s->line_count, new_location);
979 if (s->seekable == -1 && s->is_mediagateway && s->filesize == 2000000000)
980 h->is_streamed = 1; /* we can in fact _not_ seek */
982 // add any new cookies into the existing cookie string
983 cookie_string(s->cookie_dict, &s->cookies);
984 av_dict_free(&s->cookie_dict);
989 static int http_connect(URLContext *h, const char *path, const char *local_path,
990 const char *hoststr, const char *auth,
991 const char *proxyauth, int *new_location)
993 HTTPContext *s = h->priv_data;
995 char headers[HTTP_HEADERS_SIZE] = "";
996 char *authstr = NULL, *proxyauthstr = NULL;
997 int64_t off = s->off;
1000 int send_expect_100 = 0;
1002 /* send http header */
1003 post = h->flags & AVIO_FLAG_WRITE;
1006 /* force POST method and disable chunked encoding when
1007 * custom HTTP post data is set */
1009 s->chunked_post = 0;
1015 method = post ? "POST" : "GET";
1017 authstr = ff_http_auth_create_response(&s->auth_state, auth,
1018 local_path, method);
1019 proxyauthstr = ff_http_auth_create_response(&s->proxy_auth_state, proxyauth,
1020 local_path, method);
1021 if (post && !s->post_data) {
1022 send_expect_100 = s->send_expect_100;
1023 /* The user has supplied authentication but we don't know the auth type,
1024 * send Expect: 100-continue to get the 401 response including the
1025 * WWW-Authenticate header, or an 100 continue if no auth actually
1027 if (auth && *auth &&
1028 s->auth_state.auth_type == HTTP_AUTH_NONE &&
1029 s->http_code != 401)
1030 send_expect_100 = 1;
1033 /* set default headers if needed */
1034 if (!has_header(s->headers, "\r\nUser-Agent: "))
1035 len += av_strlcatf(headers + len, sizeof(headers) - len,
1036 "User-Agent: %s\r\n", s->user_agent);
1037 if (!has_header(s->headers, "\r\nAccept: "))
1038 len += av_strlcpy(headers + len, "Accept: */*\r\n",
1039 sizeof(headers) - len);
1040 // Note: we send this on purpose even when s->off is 0 when we're probing,
1041 // since it allows us to detect more reliably if a (non-conforming)
1042 // server supports seeking by analysing the reply headers.
1043 if (!has_header(s->headers, "\r\nRange: ") && !post && (s->off > 0 || s->end_off || s->seekable == -1)) {
1044 len += av_strlcatf(headers + len, sizeof(headers) - len,
1045 "Range: bytes=%"PRId64"-", s->off);
1047 len += av_strlcatf(headers + len, sizeof(headers) - len,
1048 "%"PRId64, s->end_off - 1);
1049 len += av_strlcpy(headers + len, "\r\n",
1050 sizeof(headers) - len);
1052 if (send_expect_100 && !has_header(s->headers, "\r\nExpect: "))
1053 len += av_strlcatf(headers + len, sizeof(headers) - len,
1054 "Expect: 100-continue\r\n");
1056 if (!has_header(s->headers, "\r\nConnection: ")) {
1057 if (s->multiple_requests)
1058 len += av_strlcpy(headers + len, "Connection: keep-alive\r\n",
1059 sizeof(headers) - len);
1061 len += av_strlcpy(headers + len, "Connection: close\r\n",
1062 sizeof(headers) - len);
1065 if (!has_header(s->headers, "\r\nHost: "))
1066 len += av_strlcatf(headers + len, sizeof(headers) - len,
1067 "Host: %s\r\n", hoststr);
1068 if (!has_header(s->headers, "\r\nContent-Length: ") && s->post_data)
1069 len += av_strlcatf(headers + len, sizeof(headers) - len,
1070 "Content-Length: %d\r\n", s->post_datalen);
1072 if (!has_header(s->headers, "\r\nContent-Type: ") && s->content_type)
1073 len += av_strlcatf(headers + len, sizeof(headers) - len,
1074 "Content-Type: %s\r\n", s->content_type);
1075 if (!has_header(s->headers, "\r\nCookie: ") && s->cookies) {
1076 char *cookies = NULL;
1077 if (!get_cookies(s, &cookies, path, hoststr) && cookies) {
1078 len += av_strlcatf(headers + len, sizeof(headers) - len,
1079 "Cookie: %s\r\n", cookies);
1083 if (!has_header(s->headers, "\r\nIcy-MetaData: ") && s->icy)
1084 len += av_strlcatf(headers + len, sizeof(headers) - len,
1085 "Icy-MetaData: %d\r\n", 1);
1087 /* now add in custom headers */
1089 av_strlcpy(headers + len, s->headers, sizeof(headers) - len);
1091 snprintf(s->buffer, sizeof(s->buffer),
1092 "%s %s HTTP/1.1\r\n"
1100 post && s->chunked_post ? "Transfer-Encoding: chunked\r\n" : "",
1102 authstr ? authstr : "",
1103 proxyauthstr ? "Proxy-" : "", proxyauthstr ? proxyauthstr : "");
1105 av_log(h, AV_LOG_DEBUG, "request: %s\n", s->buffer);
1107 if ((err = ffurl_write(s->hd, s->buffer, strlen(s->buffer))) < 0)
1111 if ((err = ffurl_write(s->hd, s->post_data, s->post_datalen)) < 0)
1114 /* init input buffer */
1115 s->buf_ptr = s->buffer;
1116 s->buf_end = s->buffer;
1119 s->icy_data_read = 0;
1122 s->end_chunked_post = 0;
1124 if (post && !s->post_data && !send_expect_100) {
1125 /* Pretend that it did work. We didn't read any header yet, since
1126 * we've still to send the POST data, but the code calling this
1127 * function will check http_code after we return. */
1133 /* wait for header */
1134 err = http_read_header(h, new_location);
1141 err = (off == s->off) ? 0 : -1;
1144 av_freep(&proxyauthstr);
1148 static int http_buf_read(URLContext *h, uint8_t *buf, int size)
1150 HTTPContext *s = h->priv_data;
1152 /* read bytes from input buffer first */
1153 len = s->buf_end - s->buf_ptr;
1157 memcpy(buf, s->buf_ptr, len);
1160 int64_t target_end = s->end_off ? s->end_off : s->filesize;
1161 if ((!s->willclose || s->chunksize < 0) &&
1162 target_end >= 0 && s->off >= target_end)
1164 len = ffurl_read(s->hd, buf, size);
1165 if (!len && (!s->willclose || s->chunksize < 0) &&
1166 target_end >= 0 && s->off < target_end) {
1167 av_log(h, AV_LOG_ERROR,
1168 "Stream ends prematurely at %"PRId64", should be %"PRId64"\n",
1171 return AVERROR(EIO);
1176 if (s->chunksize > 0)
1177 s->chunksize -= len;
1183 #define DECOMPRESS_BUF_SIZE (256 * 1024)
1184 static int http_buf_read_compressed(URLContext *h, uint8_t *buf, int size)
1186 HTTPContext *s = h->priv_data;
1189 if (!s->inflate_buffer) {
1190 s->inflate_buffer = av_malloc(DECOMPRESS_BUF_SIZE);
1191 if (!s->inflate_buffer)
1192 return AVERROR(ENOMEM);
1195 if (s->inflate_stream.avail_in == 0) {
1196 int read = http_buf_read(h, s->inflate_buffer, DECOMPRESS_BUF_SIZE);
1199 s->inflate_stream.next_in = s->inflate_buffer;
1200 s->inflate_stream.avail_in = read;
1203 s->inflate_stream.avail_out = size;
1204 s->inflate_stream.next_out = buf;
1206 ret = inflate(&s->inflate_stream, Z_SYNC_FLUSH);
1207 if (ret != Z_OK && ret != Z_STREAM_END)
1208 av_log(h, AV_LOG_WARNING, "inflate return value: %d, %s\n",
1209 ret, s->inflate_stream.msg);
1211 return size - s->inflate_stream.avail_out;
1213 #endif /* CONFIG_ZLIB */
1215 static int64_t http_seek_internal(URLContext *h, int64_t off, int whence, int force_reconnect);
1217 static int http_read_stream(URLContext *h, uint8_t *buf, int size)
1219 HTTPContext *s = h->priv_data;
1220 int err, new_location, read_ret, seek_ret;
1225 if (s->end_chunked_post && !s->end_header) {
1226 err = http_read_header(h, &new_location);
1231 if (s->chunksize >= 0) {
1232 if (!s->chunksize) {
1236 if ((err = http_get_line(s, line, sizeof(line))) < 0)
1238 } while (!*line); /* skip CR LF from last chunk */
1240 s->chunksize = strtoll(line, NULL, 16);
1242 av_log(NULL, AV_LOG_TRACE, "Chunked encoding data size: %"PRId64"'\n",
1248 size = FFMIN(size, s->chunksize);
1252 return http_buf_read_compressed(h, buf, size);
1253 #endif /* CONFIG_ZLIB */
1254 read_ret = http_buf_read(h, buf, size);
1255 if ( (read_ret < 0 && s->reconnect && (!h->is_streamed || s->reconnect_streamed) && s->filesize > 0 && s->off < s->filesize)
1256 || (read_ret == 0 && s->reconnect_at_eof && (!h->is_streamed || s->reconnect_streamed))) {
1257 int64_t target = h->is_streamed ? 0 : s->off;
1259 if (s->reconnect_delay > s->reconnect_delay_max)
1260 return AVERROR(EIO);
1262 av_log(h, AV_LOG_INFO, "Will reconnect at %"PRId64" error=%s.\n", s->off, av_err2str(read_ret));
1263 av_usleep(1000U*1000*s->reconnect_delay);
1264 s->reconnect_delay = 1 + 2*s->reconnect_delay;
1265 seek_ret = http_seek_internal(h, target, SEEK_SET, 1);
1266 if (seek_ret != target) {
1267 av_log(h, AV_LOG_ERROR, "Failed to reconnect at %"PRId64".\n", target);
1271 read_ret = http_buf_read(h, buf, size);
1273 s->reconnect_delay = 0;
1278 // Like http_read_stream(), but no short reads.
1279 // Assumes partial reads are an error.
1280 static int http_read_stream_all(URLContext *h, uint8_t *buf, int size)
1283 while (pos < size) {
1284 int len = http_read_stream(h, buf + pos, size - pos);
1292 static void update_metadata(HTTPContext *s, char *data)
1301 val = strstr(key, "='");
1304 end = strstr(val, "';");
1312 av_dict_set(&s->metadata, key, val, 0);
1318 static int store_icy(URLContext *h, int size)
1320 HTTPContext *s = h->priv_data;
1321 /* until next metadata packet */
1322 int remaining = s->icy_metaint - s->icy_data_read;
1325 return AVERROR_INVALIDDATA;
1328 /* The metadata packet is variable sized. It has a 1 byte header
1329 * which sets the length of the packet (divided by 16). If it's 0,
1330 * the metadata doesn't change. After the packet, icy_metaint bytes
1331 * of normal data follows. */
1333 int len = http_read_stream_all(h, &ch, 1);
1337 char data[255 * 16 + 1];
1340 ret = http_read_stream_all(h, data, len);
1344 if ((ret = av_opt_set(s, "icy_metadata_packet", data, 0)) < 0)
1346 update_metadata(s, data);
1348 s->icy_data_read = 0;
1349 remaining = s->icy_metaint;
1352 return FFMIN(size, remaining);
1355 static int http_read(URLContext *h, uint8_t *buf, int size)
1357 HTTPContext *s = h->priv_data;
1359 if (s->icy_metaint > 0) {
1360 size = store_icy(h, size);
1365 size = http_read_stream(h, buf, size);
1367 s->icy_data_read += size;
1371 /* used only when posting data */
1372 static int http_write(URLContext *h, const uint8_t *buf, int size)
1374 char temp[11] = ""; /* 32-bit hex + CRLF + nul */
1376 char crlf[] = "\r\n";
1377 HTTPContext *s = h->priv_data;
1379 if (!s->chunked_post) {
1380 /* non-chunked data is sent without any special encoding */
1381 return ffurl_write(s->hd, buf, size);
1384 /* silently ignore zero-size data since chunk encoding that would
1387 /* upload data using chunked encoding */
1388 snprintf(temp, sizeof(temp), "%x\r\n", size);
1390 if ((ret = ffurl_write(s->hd, temp, strlen(temp))) < 0 ||
1391 (ret = ffurl_write(s->hd, buf, size)) < 0 ||
1392 (ret = ffurl_write(s->hd, crlf, sizeof(crlf) - 1)) < 0)
1398 static int http_shutdown(URLContext *h, int flags)
1401 char footer[] = "0\r\n\r\n";
1402 HTTPContext *s = h->priv_data;
1404 /* signal end of chunked encoding if used */
1405 if (((flags & AVIO_FLAG_WRITE) && s->chunked_post) ||
1406 ((flags & AVIO_FLAG_READ) && s->chunked_post && s->listen)) {
1407 ret = ffurl_write(s->hd, footer, sizeof(footer) - 1);
1408 ret = ret > 0 ? 0 : ret;
1409 s->end_chunked_post = 1;
1415 static int http_close(URLContext *h)
1418 HTTPContext *s = h->priv_data;
1421 inflateEnd(&s->inflate_stream);
1422 av_freep(&s->inflate_buffer);
1423 #endif /* CONFIG_ZLIB */
1425 if (!s->end_chunked_post)
1426 /* Close the write direction by sending the end of chunked encoding. */
1427 ret = http_shutdown(h, h->flags);
1430 ffurl_closep(&s->hd);
1431 av_dict_free(&s->chained_options);
1435 static int64_t http_seek_internal(URLContext *h, int64_t off, int whence, int force_reconnect)
1437 HTTPContext *s = h->priv_data;
1438 URLContext *old_hd = s->hd;
1439 int64_t old_off = s->off;
1440 uint8_t old_buf[BUFFER_SIZE];
1441 int old_buf_size, ret;
1442 AVDictionary *options = NULL;
1444 if (whence == AVSEEK_SIZE)
1446 else if (!force_reconnect &&
1447 ((whence == SEEK_CUR && off == 0) ||
1448 (whence == SEEK_SET && off == s->off)))
1450 else if ((s->filesize == -1 && whence == SEEK_END))
1451 return AVERROR(ENOSYS);
1453 if (whence == SEEK_CUR)
1455 else if (whence == SEEK_END)
1457 else if (whence != SEEK_SET)
1458 return AVERROR(EINVAL);
1460 return AVERROR(EINVAL);
1463 if (s->off && h->is_streamed)
1464 return AVERROR(ENOSYS);
1466 /* we save the old context in case the seek fails */
1467 old_buf_size = s->buf_end - s->buf_ptr;
1468 memcpy(old_buf, s->buf_ptr, old_buf_size);
1471 /* if it fails, continue on old connection */
1472 if ((ret = http_open_cnx(h, &options)) < 0) {
1473 av_dict_free(&options);
1474 memcpy(s->buffer, old_buf, old_buf_size);
1475 s->buf_ptr = s->buffer;
1476 s->buf_end = s->buffer + old_buf_size;
1481 av_dict_free(&options);
1482 ffurl_close(old_hd);
1486 static int64_t http_seek(URLContext *h, int64_t off, int whence)
1488 return http_seek_internal(h, off, whence, 0);
1491 static int http_get_file_handle(URLContext *h)
1493 HTTPContext *s = h->priv_data;
1494 return ffurl_get_file_handle(s->hd);
1497 #define HTTP_CLASS(flavor) \
1498 static const AVClass flavor ## _context_class = { \
1499 .class_name = # flavor, \
1500 .item_name = av_default_item_name, \
1501 .option = options, \
1502 .version = LIBAVUTIL_VERSION_INT, \
1505 #if CONFIG_HTTP_PROTOCOL
1508 URLProtocol ff_http_protocol = {
1510 .url_open2 = http_open,
1511 .url_accept = http_accept,
1512 .url_handshake = http_handshake,
1513 .url_read = http_read,
1514 .url_write = http_write,
1515 .url_seek = http_seek,
1516 .url_close = http_close,
1517 .url_get_file_handle = http_get_file_handle,
1518 .url_shutdown = http_shutdown,
1519 .priv_data_size = sizeof(HTTPContext),
1520 .priv_data_class = &http_context_class,
1521 .flags = URL_PROTOCOL_FLAG_NETWORK,
1523 #endif /* CONFIG_HTTP_PROTOCOL */
1525 #if CONFIG_HTTPS_PROTOCOL
1528 URLProtocol ff_https_protocol = {
1530 .url_open2 = http_open,
1531 .url_read = http_read,
1532 .url_write = http_write,
1533 .url_seek = http_seek,
1534 .url_close = http_close,
1535 .url_get_file_handle = http_get_file_handle,
1536 .url_shutdown = http_shutdown,
1537 .priv_data_size = sizeof(HTTPContext),
1538 .priv_data_class = &https_context_class,
1539 .flags = URL_PROTOCOL_FLAG_NETWORK,
1541 #endif /* CONFIG_HTTPS_PROTOCOL */
1543 #if CONFIG_HTTPPROXY_PROTOCOL
1544 static int http_proxy_close(URLContext *h)
1546 HTTPContext *s = h->priv_data;
1548 ffurl_closep(&s->hd);
1552 static int http_proxy_open(URLContext *h, const char *uri, int flags)
1554 HTTPContext *s = h->priv_data;
1555 char hostname[1024], hoststr[1024];
1556 char auth[1024], pathbuf[1024], *path;
1557 char lower_url[100];
1558 int port, ret = 0, attempts = 0;
1559 HTTPAuthType cur_auth_type;
1563 if( s->seekable == 1 )
1568 av_url_split(NULL, 0, auth, sizeof(auth), hostname, sizeof(hostname), &port,
1569 pathbuf, sizeof(pathbuf), uri);
1570 ff_url_join(hoststr, sizeof(hoststr), NULL, NULL, hostname, port, NULL);
1575 ff_url_join(lower_url, sizeof(lower_url), "tcp", NULL, hostname, port,
1578 ret = ffurl_open(&s->hd, lower_url, AVIO_FLAG_READ_WRITE,
1579 &h->interrupt_callback, NULL);
1583 authstr = ff_http_auth_create_response(&s->proxy_auth_state, auth,
1585 snprintf(s->buffer, sizeof(s->buffer),
1586 "CONNECT %s HTTP/1.1\r\n"
1588 "Connection: close\r\n"
1593 authstr ? "Proxy-" : "", authstr ? authstr : "");
1596 if ((ret = ffurl_write(s->hd, s->buffer, strlen(s->buffer))) < 0)
1599 s->buf_ptr = s->buffer;
1600 s->buf_end = s->buffer;
1603 cur_auth_type = s->proxy_auth_state.auth_type;
1605 /* Note: This uses buffering, potentially reading more than the
1606 * HTTP header. If tunneling a protocol where the server starts
1607 * the conversation, we might buffer part of that here, too.
1608 * Reading that requires using the proper ffurl_read() function
1609 * on this URLContext, not using the fd directly (as the tls
1610 * protocol does). This shouldn't be an issue for tls though,
1611 * since the client starts the conversation there, so there
1612 * is no extra data that we might buffer up here.
1614 ret = http_read_header(h, &new_loc);
1619 if (s->http_code == 407 &&
1620 (cur_auth_type == HTTP_AUTH_NONE || s->proxy_auth_state.stale) &&
1621 s->proxy_auth_state.auth_type != HTTP_AUTH_NONE && attempts < 2) {
1622 ffurl_closep(&s->hd);
1626 if (s->http_code < 400)
1628 ret = ff_http_averror(s->http_code, AVERROR(EIO));
1631 http_proxy_close(h);
1635 static int http_proxy_write(URLContext *h, const uint8_t *buf, int size)
1637 HTTPContext *s = h->priv_data;
1638 return ffurl_write(s->hd, buf, size);
1641 URLProtocol ff_httpproxy_protocol = {
1642 .name = "httpproxy",
1643 .url_open = http_proxy_open,
1644 .url_read = http_buf_read,
1645 .url_write = http_proxy_write,
1646 .url_close = http_proxy_close,
1647 .url_get_file_handle = http_get_file_handle,
1648 .priv_data_size = sizeof(HTTPContext),
1649 .flags = URL_PROTOCOL_FLAG_NETWORK,
1651 #endif /* CONFIG_HTTPPROXY_PROTOCOL */