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"
32 #include "libavutil/parseutils.h"
39 #include "os_support.h"
42 /* XXX: POST protocol is not completely implemented because ffmpeg uses
43 * only a subset of it. */
45 /* The IO buffer size is unrelated to the max URL size in itself, but needs
46 * to be large enough to fit the full request headers (including long
48 #define BUFFER_SIZE MAX_URL_SIZE
49 #define MAX_REDIRECTS 8
53 #define WHITESPACES " \n\t\r"
61 typedef struct HTTPContext {
64 unsigned char buffer[BUFFER_SIZE], *buf_ptr, *buf_end;
67 /* Used if "Transfer-Encoding: chunked" otherwise -1. */
70 uint64_t off, end_off, filesize;
72 HTTPAuthState auth_state;
73 HTTPAuthState proxy_auth_state;
79 #if FF_API_HTTP_USER_AGENT
80 char *user_agent_deprecated;
83 /* Set if the server correctly handles Connection: close and will close
84 * the connection after feeding us the content. */
86 int seekable; /**< Control seekability, 0 = disable, 1 = enable, -1 = probe. */
88 /* A flag which indicates if the end of chunked encoding has been sent. */
90 /* A flag which indicates we have finished to read POST reply. */
92 /* A flag which indicates if we use persistent connections. */
93 int multiple_requests;
98 char *cookies; ///< holds newline (\n) delimited Set-Cookie header field values (without the "Set-Cookie: " field name)
99 /* A dictionary containing cookies keyed by cookie name */
100 AVDictionary *cookie_dict;
102 /* how much data was read since the last ICY metadata packet */
103 uint64_t icy_data_read;
104 /* after how many bytes of read data a new metadata packet will be found */
105 uint64_t icy_metaint;
106 char *icy_metadata_headers;
107 char *icy_metadata_packet;
108 AVDictionary *metadata;
111 z_stream inflate_stream;
112 uint8_t *inflate_buffer;
113 #endif /* CONFIG_ZLIB */
114 AVDictionary *chained_options;
118 int reconnect_at_eof;
119 int reconnect_streamed;
120 int reconnect_delay_max;
125 HandshakeState handshake_step;
126 int is_connected_server;
129 #define OFFSET(x) offsetof(HTTPContext, x)
130 #define D AV_OPT_FLAG_DECODING_PARAM
131 #define E AV_OPT_FLAG_ENCODING_PARAM
132 #define DEFAULT_USER_AGENT "Lavf/" AV_STRINGIFY(LIBAVFORMAT_VERSION)
134 static const AVOption options[] = {
135 { "seekable", "control seekability of connection", OFFSET(seekable), AV_OPT_TYPE_BOOL, { .i64 = -1 }, -1, 1, D },
136 { "chunked_post", "use chunked transfer-encoding for posts", OFFSET(chunked_post), AV_OPT_TYPE_BOOL, { .i64 = 1 }, 0, 1, E },
137 { "http_proxy", "set HTTP proxy to tunnel through", OFFSET(http_proxy), AV_OPT_TYPE_STRING, { .str = NULL }, 0, 0, D | E },
138 { "headers", "set custom HTTP headers, can override built in default headers", OFFSET(headers), AV_OPT_TYPE_STRING, { .str = NULL }, 0, 0, D | E },
139 { "content_type", "set a specific content type for the POST messages", OFFSET(content_type), AV_OPT_TYPE_STRING, { .str = NULL }, 0, 0, D | E },
140 { "user_agent", "override User-Agent header", OFFSET(user_agent), AV_OPT_TYPE_STRING, { .str = DEFAULT_USER_AGENT }, 0, 0, D },
141 #if FF_API_HTTP_USER_AGENT
142 { "user-agent", "override User-Agent header", OFFSET(user_agent_deprecated), AV_OPT_TYPE_STRING, { .str = DEFAULT_USER_AGENT }, 0, 0, D },
144 { "multiple_requests", "use persistent connections", OFFSET(multiple_requests), AV_OPT_TYPE_BOOL, { .i64 = 0 }, 0, 1, D | E },
145 { "post_data", "set custom HTTP post data", OFFSET(post_data), AV_OPT_TYPE_BINARY, .flags = D | E },
146 { "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 },
147 { "http_version", "export the http response version", OFFSET(http_version), AV_OPT_TYPE_STRING, { .str = NULL }, 0, 0, AV_OPT_FLAG_EXPORT | AV_OPT_FLAG_READONLY },
148 { "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 },
149 { "icy", "request ICY metadata", OFFSET(icy), AV_OPT_TYPE_BOOL, { .i64 = 1 }, 0, 1, D },
150 { "icy_metadata_headers", "return ICY metadata headers", OFFSET(icy_metadata_headers), AV_OPT_TYPE_STRING, { .str = NULL }, 0, 0, AV_OPT_FLAG_EXPORT },
151 { "icy_metadata_packet", "return current ICY metadata packet", OFFSET(icy_metadata_packet), AV_OPT_TYPE_STRING, { .str = NULL }, 0, 0, AV_OPT_FLAG_EXPORT },
152 { "metadata", "metadata read from the bitstream", OFFSET(metadata), AV_OPT_TYPE_DICT, {0}, 0, 0, AV_OPT_FLAG_EXPORT },
153 { "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"},
154 { "none", "No auth method set, autodetect", 0, AV_OPT_TYPE_CONST, { .i64 = HTTP_AUTH_NONE }, 0, 0, D | E, "auth_type"},
155 { "basic", "HTTP basic authentication", 0, AV_OPT_TYPE_CONST, { .i64 = HTTP_AUTH_BASIC }, 0, 0, D | E, "auth_type"},
156 { "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 },
157 { "location", "The actual location of the data received", OFFSET(location), AV_OPT_TYPE_STRING, { .str = NULL }, 0, 0, D | E },
158 { "offset", "initial byte offset", OFFSET(off), AV_OPT_TYPE_INT64, { .i64 = 0 }, 0, INT64_MAX, D },
159 { "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 },
160 { "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 },
161 { "reconnect", "auto reconnect after disconnect before EOF", OFFSET(reconnect), AV_OPT_TYPE_BOOL, { .i64 = 0 }, 0, 1, D },
162 { "reconnect_at_eof", "auto reconnect at EOF", OFFSET(reconnect_at_eof), AV_OPT_TYPE_BOOL, { .i64 = 0 }, 0, 1, D },
163 { "reconnect_streamed", "auto reconnect streamed / non seekable streams", OFFSET(reconnect_streamed), AV_OPT_TYPE_BOOL, { .i64 = 0 }, 0, 1, D },
164 { "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 },
165 { "listen", "listen on HTTP", OFFSET(listen), AV_OPT_TYPE_INT, { .i64 = 0 }, 0, 2, D | E },
166 { "resource", "The resource requested by a client", OFFSET(resource), AV_OPT_TYPE_STRING, { .str = NULL }, 0, 0, E },
167 { "reply_code", "The http status code to return to a client", OFFSET(reply_code), AV_OPT_TYPE_INT, { .i64 = 200}, INT_MIN, 599, E},
171 static int http_connect(URLContext *h, const char *path, const char *local_path,
172 const char *hoststr, const char *auth,
173 const char *proxyauth, int *new_location);
174 static int http_read_header(URLContext *h, int *new_location);
175 static int http_shutdown(URLContext *h, int flags);
177 void ff_http_init_auth_state(URLContext *dest, const URLContext *src)
179 memcpy(&((HTTPContext *)dest->priv_data)->auth_state,
180 &((HTTPContext *)src->priv_data)->auth_state,
181 sizeof(HTTPAuthState));
182 memcpy(&((HTTPContext *)dest->priv_data)->proxy_auth_state,
183 &((HTTPContext *)src->priv_data)->proxy_auth_state,
184 sizeof(HTTPAuthState));
187 static int http_open_cnx_internal(URLContext *h, AVDictionary **options)
189 const char *path, *proxy_path, *lower_proto = "tcp", *local_path;
190 char hostname[1024], hoststr[1024], proto[10];
191 char auth[1024], proxyauth[1024] = "";
192 char path1[MAX_URL_SIZE];
193 char buf[1024], urlbuf[MAX_URL_SIZE];
194 int port, use_proxy, err, location_changed = 0;
195 HTTPContext *s = h->priv_data;
197 av_url_split(proto, sizeof(proto), auth, sizeof(auth),
198 hostname, sizeof(hostname), &port,
199 path1, sizeof(path1), s->location);
200 ff_url_join(hoststr, sizeof(hoststr), NULL, NULL, hostname, port, NULL);
202 proxy_path = s->http_proxy ? s->http_proxy : getenv("http_proxy");
203 use_proxy = !ff_http_match_no_proxy(getenv("no_proxy"), hostname) &&
204 proxy_path && av_strstart(proxy_path, "http://", NULL);
206 if (!strcmp(proto, "https")) {
215 if (path1[0] == '\0')
221 /* Reassemble the request URL without auth string - we don't
222 * want to leak the auth to the proxy. */
223 ff_url_join(urlbuf, sizeof(urlbuf), proto, NULL, hostname, port, "%s",
226 av_url_split(NULL, 0, proxyauth, sizeof(proxyauth),
227 hostname, sizeof(hostname), &port, NULL, 0, proxy_path);
230 ff_url_join(buf, sizeof(buf), lower_proto, NULL, hostname, port, NULL);
233 err = ffurl_open_whitelist(&s->hd, buf, AVIO_FLAG_READ_WRITE,
234 &h->interrupt_callback, options,
235 h->protocol_whitelist, h->protocol_blacklist, h);
240 err = http_connect(h, path, local_path, hoststr,
241 auth, proxyauth, &location_changed);
245 return location_changed;
248 /* return non zero if error */
249 static int http_open_cnx(URLContext *h, AVDictionary **options)
251 HTTPAuthType cur_auth_type, cur_proxy_auth_type;
252 HTTPContext *s = h->priv_data;
253 int location_changed, attempts = 0, redirects = 0;
255 av_dict_copy(options, s->chained_options, 0);
257 cur_auth_type = s->auth_state.auth_type;
258 cur_proxy_auth_type = s->auth_state.auth_type;
260 location_changed = http_open_cnx_internal(h, options);
261 if (location_changed < 0)
265 if (s->http_code == 401) {
266 if ((cur_auth_type == HTTP_AUTH_NONE || s->auth_state.stale) &&
267 s->auth_state.auth_type != HTTP_AUTH_NONE && attempts < 4) {
268 ffurl_closep(&s->hd);
273 if (s->http_code == 407) {
274 if ((cur_proxy_auth_type == HTTP_AUTH_NONE || s->proxy_auth_state.stale) &&
275 s->proxy_auth_state.auth_type != HTTP_AUTH_NONE && attempts < 4) {
276 ffurl_closep(&s->hd);
281 if ((s->http_code == 301 || s->http_code == 302 ||
282 s->http_code == 303 || s->http_code == 307) &&
283 location_changed == 1) {
284 /* url moved, get next */
285 ffurl_closep(&s->hd);
286 if (redirects++ >= MAX_REDIRECTS)
288 /* Restart the authentication process with the new target, which
289 * might use a different auth mechanism. */
290 memset(&s->auth_state, 0, sizeof(s->auth_state));
292 location_changed = 0;
299 ffurl_closep(&s->hd);
300 if (location_changed < 0)
301 return location_changed;
302 return ff_http_averror(s->http_code, AVERROR(EIO));
305 int ff_http_do_new_request(URLContext *h, const char *uri)
307 HTTPContext *s = h->priv_data;
308 AVDictionary *options = NULL;
310 char hostname1[1024], hostname2[1024], proto1[10], proto2[10];
314 !(!strcmp(h->prot->name, "http") ||
315 !strcmp(h->prot->name, "https")))
316 return AVERROR(EINVAL);
318 av_url_split(proto1, sizeof(proto1), NULL, 0,
319 hostname1, sizeof(hostname1), &port1,
320 NULL, 0, s->location);
321 av_url_split(proto2, sizeof(proto2), NULL, 0,
322 hostname2, sizeof(hostname2), &port2,
324 if (port1 != port2 || strncmp(hostname1, hostname2, sizeof(hostname2)) != 0) {
325 av_log(h, AV_LOG_ERROR, "Cannot reuse HTTP connection for different host: %s:%d != %s:%d\n",
329 return AVERROR(EINVAL);
332 if (!s->end_chunked_post) {
333 ret = http_shutdown(h, h->flags);
341 s->end_chunked_post = 0;
344 s->icy_data_read = 0;
345 av_free(s->location);
346 s->location = av_strdup(uri);
348 return AVERROR(ENOMEM);
350 av_log(s, AV_LOG_INFO, "Opening \'%s\' for %s\n", uri, h->flags & AVIO_FLAG_WRITE ? "writing" : "reading");
351 ret = http_open_cnx(h, &options);
352 av_dict_free(&options);
356 int ff_http_averror(int status_code, int default_averror)
358 switch (status_code) {
359 case 400: return AVERROR_HTTP_BAD_REQUEST;
360 case 401: return AVERROR_HTTP_UNAUTHORIZED;
361 case 403: return AVERROR_HTTP_FORBIDDEN;
362 case 404: return AVERROR_HTTP_NOT_FOUND;
365 if (status_code >= 400 && status_code <= 499)
366 return AVERROR_HTTP_OTHER_4XX;
367 else if (status_code >= 500)
368 return AVERROR_HTTP_SERVER_ERROR;
370 return default_averror;
373 static int http_write_reply(URLContext* h, int status_code)
375 int ret, body = 0, reply_code, message_len;
376 const char *reply_text, *content_type;
377 HTTPContext *s = h->priv_data;
378 char message[BUFFER_SIZE];
379 content_type = "text/plain";
383 switch (status_code) {
384 case AVERROR_HTTP_BAD_REQUEST:
387 reply_text = "Bad Request";
389 case AVERROR_HTTP_FORBIDDEN:
392 reply_text = "Forbidden";
394 case AVERROR_HTTP_NOT_FOUND:
397 reply_text = "Not Found";
402 content_type = s->content_type ? s->content_type : "application/octet-stream";
404 case AVERROR_HTTP_SERVER_ERROR:
407 reply_text = "Internal server error";
410 return AVERROR(EINVAL);
414 message_len = snprintf(message, sizeof(message),
415 "HTTP/1.1 %03d %s\r\n"
416 "Content-Type: %s\r\n"
417 "Content-Length: %"SIZE_SPECIFIER"\r\n"
424 strlen(reply_text) + 6, // 3 digit status code + space + \r\n
425 s->headers ? s->headers : "",
430 message_len = snprintf(message, sizeof(message),
431 "HTTP/1.1 %03d %s\r\n"
432 "Content-Type: %s\r\n"
433 "Transfer-Encoding: chunked\r\n"
439 s->headers ? s->headers : "");
441 av_log(h, AV_LOG_TRACE, "HTTP reply header: \n%s----\n", message);
442 if ((ret = ffurl_write(s->hd, message, message_len)) < 0)
447 static void handle_http_errors(URLContext *h, int error)
449 av_assert0(error < 0);
450 http_write_reply(h, error);
453 static int http_handshake(URLContext *c)
455 int ret, err, new_location;
456 HTTPContext *ch = c->priv_data;
457 URLContext *cl = ch->hd;
458 switch (ch->handshake_step) {
460 av_log(c, AV_LOG_TRACE, "Lower protocol\n");
461 if ((ret = ffurl_handshake(cl)) > 0)
465 ch->handshake_step = READ_HEADERS;
466 ch->is_connected_server = 1;
469 av_log(c, AV_LOG_TRACE, "Read headers\n");
470 if ((err = http_read_header(c, &new_location)) < 0) {
471 handle_http_errors(c, err);
474 ch->handshake_step = WRITE_REPLY_HEADERS;
476 case WRITE_REPLY_HEADERS:
477 av_log(c, AV_LOG_TRACE, "Reply code: %d\n", ch->reply_code);
478 if ((err = http_write_reply(c, ch->reply_code)) < 0)
480 ch->handshake_step = FINISH;
485 // this should never be reached.
486 return AVERROR(EINVAL);
489 static int http_listen(URLContext *h, const char *uri, int flags,
490 AVDictionary **options) {
491 HTTPContext *s = h->priv_data;
493 char hostname[1024], proto[10];
495 const char *lower_proto = "tcp";
497 av_url_split(proto, sizeof(proto), NULL, 0, hostname, sizeof(hostname), &port,
499 if (!strcmp(proto, "https"))
501 ff_url_join(lower_url, sizeof(lower_url), lower_proto, NULL, hostname, port,
503 if ((ret = av_dict_set_int(options, "listen", s->listen, 0)) < 0)
505 if ((ret = ffurl_open_whitelist(&s->hd, lower_url, AVIO_FLAG_READ_WRITE,
506 &h->interrupt_callback, options,
507 h->protocol_whitelist, h->protocol_blacklist, h
510 s->handshake_step = LOWER_PROTO;
511 if (s->listen == HTTP_SINGLE) { /* single client */
513 while ((ret = http_handshake(h)) > 0);
516 av_dict_free(&s->chained_options);
520 static int http_open(URLContext *h, const char *uri, int flags,
521 AVDictionary **options)
523 HTTPContext *s = h->priv_data;
526 if( s->seekable == 1 )
531 s->filesize = UINT64_MAX;
532 s->location = av_strdup(uri);
534 return AVERROR(ENOMEM);
536 av_dict_copy(&s->chained_options, *options, 0);
539 int len = strlen(s->headers);
540 if (len < 2 || strcmp("\r\n", s->headers + len - 2)) {
541 av_log(h, AV_LOG_WARNING,
542 "No trailing CRLF found in HTTP header.\n");
543 ret = av_reallocp(&s->headers, len + 3);
546 s->headers[len] = '\r';
547 s->headers[len + 1] = '\n';
548 s->headers[len + 2] = '\0';
553 return http_listen(h, uri, flags, options);
555 ret = http_open_cnx(h, options);
557 av_dict_free(&s->chained_options);
561 static int http_accept(URLContext *s, URLContext **c)
564 HTTPContext *sc = s->priv_data;
566 URLContext *sl = sc->hd;
567 URLContext *cl = NULL;
569 av_assert0(sc->listen);
570 if ((ret = ffurl_alloc(c, s->filename, s->flags, &sl->interrupt_callback)) < 0)
572 cc = (*c)->priv_data;
573 if ((ret = ffurl_accept(sl, &cl)) < 0)
576 cc->is_multi_client = 1;
581 static int http_getc(HTTPContext *s)
584 if (s->buf_ptr >= s->buf_end) {
585 len = ffurl_read(s->hd, s->buffer, BUFFER_SIZE);
588 } else if (len == 0) {
591 s->buf_ptr = s->buffer;
592 s->buf_end = s->buffer + len;
595 return *s->buf_ptr++;
598 static int http_get_line(HTTPContext *s, char *line, int line_size)
610 if (q > line && q[-1] == '\r')
616 if ((q - line) < line_size - 1)
622 static int check_http_code(URLContext *h, int http_code, const char *end)
624 HTTPContext *s = h->priv_data;
625 /* error codes are 4xx and 5xx, but regard 401 as a success, so we
626 * don't abort until all headers have been parsed. */
627 if (http_code >= 400 && http_code < 600 &&
628 (http_code != 401 || s->auth_state.auth_type != HTTP_AUTH_NONE) &&
629 (http_code != 407 || s->proxy_auth_state.auth_type != HTTP_AUTH_NONE)) {
630 end += strspn(end, SPACE_CHARS);
631 av_log(h, AV_LOG_WARNING, "HTTP error %d %s\n", http_code, end);
632 return ff_http_averror(http_code, AVERROR(EIO));
637 static int parse_location(HTTPContext *s, const char *p)
639 char redirected_location[MAX_URL_SIZE], *new_loc;
640 ff_make_absolute_url(redirected_location, sizeof(redirected_location),
642 new_loc = av_strdup(redirected_location);
644 return AVERROR(ENOMEM);
645 av_free(s->location);
646 s->location = new_loc;
650 /* "bytes $from-$to/$document_size" */
651 static void parse_content_range(URLContext *h, const char *p)
653 HTTPContext *s = h->priv_data;
656 if (!strncmp(p, "bytes ", 6)) {
658 s->off = strtoull(p, NULL, 10);
659 if ((slash = strchr(p, '/')) && strlen(slash) > 0)
660 s->filesize = strtoull(slash + 1, NULL, 10);
662 if (s->seekable == -1 && (!s->is_akamai || s->filesize != 2147483647))
663 h->is_streamed = 0; /* we _can_ in fact seek */
666 static int parse_content_encoding(URLContext *h, const char *p)
668 if (!av_strncasecmp(p, "gzip", 4) ||
669 !av_strncasecmp(p, "deflate", 7)) {
671 HTTPContext *s = h->priv_data;
674 inflateEnd(&s->inflate_stream);
675 if (inflateInit2(&s->inflate_stream, 32 + 15) != Z_OK) {
676 av_log(h, AV_LOG_WARNING, "Error during zlib initialisation: %s\n",
677 s->inflate_stream.msg);
678 return AVERROR(ENOSYS);
680 if (zlibCompileFlags() & (1 << 17)) {
681 av_log(h, AV_LOG_WARNING,
682 "Your zlib was compiled without gzip support.\n");
683 return AVERROR(ENOSYS);
686 av_log(h, AV_LOG_WARNING,
687 "Compressed (%s) content, need zlib with gzip support\n", p);
688 return AVERROR(ENOSYS);
689 #endif /* CONFIG_ZLIB */
690 } else if (!av_strncasecmp(p, "identity", 8)) {
691 // The normal, no-encoding case (although servers shouldn't include
692 // the header at all if this is the case).
694 av_log(h, AV_LOG_WARNING, "Unknown content coding: %s\n", p);
699 // Concat all Icy- header lines
700 static int parse_icy(HTTPContext *s, const char *tag, const char *p)
702 int len = 4 + strlen(p) + strlen(tag);
703 int is_first = !s->icy_metadata_headers;
706 av_dict_set(&s->metadata, tag, p, 0);
708 if (s->icy_metadata_headers)
709 len += strlen(s->icy_metadata_headers);
711 if ((ret = av_reallocp(&s->icy_metadata_headers, len)) < 0)
715 *s->icy_metadata_headers = '\0';
717 av_strlcatf(s->icy_metadata_headers, len, "%s: %s\n", tag, p);
722 static int parse_set_cookie_expiry_time(const char *exp_str, struct tm *buf)
724 char exp_buf[MAX_EXPIRY];
725 int i, j, exp_buf_len = MAX_EXPIRY-1;
728 // strip off any punctuation or whitespace
729 for (i = 0, j = 0; exp_str[i] != '\0' && j < exp_buf_len; i++) {
730 if ((exp_str[i] >= '0' && exp_str[i] <= '9') ||
731 (exp_str[i] >= 'A' && exp_str[i] <= 'Z') ||
732 (exp_str[i] >= 'a' && exp_str[i] <= 'z')) {
733 exp_buf[j] = exp_str[i];
740 // move the string beyond the day of week
741 while ((*expiry < '0' || *expiry > '9') && *expiry != '\0')
744 return av_small_strptime(expiry, "%d%b%Y%H%M%S", buf) ? 0 : AVERROR(EINVAL);
747 static int parse_set_cookie(const char *set_cookie, AVDictionary **dict)
749 char *param, *next_param, *cstr, *back;
751 if (!(cstr = av_strdup(set_cookie)))
752 return AVERROR(EINVAL);
754 // strip any trailing whitespace
755 back = &cstr[strlen(cstr)-1];
756 while (strchr(WHITESPACES, *back)) {
762 while ((param = av_strtok(next_param, ";", &next_param))) {
764 param += strspn(param, WHITESPACES);
765 if ((name = av_strtok(param, "=", &value))) {
766 if (av_dict_set(dict, name, value, 0) < 0) {
777 static int parse_cookie(HTTPContext *s, const char *p, AVDictionary **cookies)
779 AVDictionary *new_params = NULL;
780 AVDictionaryEntry *e, *cookie_entry;
783 // ensure the cookie is parsable
784 if (parse_set_cookie(p, &new_params))
787 // if there is no cookie value there is nothing to parse
788 cookie_entry = av_dict_get(new_params, "", NULL, AV_DICT_IGNORE_SUFFIX);
789 if (!cookie_entry || !cookie_entry->value) {
790 av_dict_free(&new_params);
794 // ensure the cookie is not expired or older than an existing value
795 if ((e = av_dict_get(new_params, "expires", NULL, 0)) && e->value) {
796 struct tm new_tm = {0};
797 if (!parse_set_cookie_expiry_time(e->value, &new_tm)) {
798 AVDictionaryEntry *e2;
800 // if the cookie has already expired ignore it
801 if (av_timegm(&new_tm) < av_gettime() / 1000000) {
802 av_dict_free(&new_params);
806 // only replace an older cookie with the same name
807 e2 = av_dict_get(*cookies, cookie_entry->key, NULL, 0);
808 if (e2 && e2->value) {
809 AVDictionary *old_params = NULL;
810 if (!parse_set_cookie(p, &old_params)) {
811 e2 = av_dict_get(old_params, "expires", NULL, 0);
812 if (e2 && e2->value) {
813 struct tm old_tm = {0};
814 if (!parse_set_cookie_expiry_time(e->value, &old_tm)) {
815 if (av_timegm(&new_tm) < av_timegm(&old_tm)) {
816 av_dict_free(&new_params);
817 av_dict_free(&old_params);
823 av_dict_free(&old_params);
827 av_dict_free(&new_params);
829 // duplicate the cookie name (dict will dupe the value)
830 if (!(eql = strchr(p, '='))) return AVERROR(EINVAL);
831 if (!(name = av_strndup(p, eql - p))) return AVERROR(ENOMEM);
833 // add the cookie to the dictionary
834 av_dict_set(cookies, name, eql, AV_DICT_DONT_STRDUP_KEY);
839 static int cookie_string(AVDictionary *dict, char **cookies)
841 AVDictionaryEntry *e = NULL;
844 // determine how much memory is needed for the cookies string
845 while (e = av_dict_get(dict, "", e, AV_DICT_IGNORE_SUFFIX))
846 len += strlen(e->key) + strlen(e->value) + 1;
848 // reallocate the cookies
850 if (*cookies) av_free(*cookies);
851 *cookies = av_malloc(len);
852 if (!*cookies) return AVERROR(ENOMEM);
855 // write out the cookies
856 while (e = av_dict_get(dict, "", e, AV_DICT_IGNORE_SUFFIX))
857 av_strlcatf(*cookies, len, "%s%s\n", e->key, e->value);
862 static int process_line(URLContext *h, char *line, int line_count,
865 HTTPContext *s = h->priv_data;
866 const char *auto_method = h->flags & AVIO_FLAG_READ ? "POST" : "GET";
867 char *tag, *p, *end, *method, *resource, *version;
871 if (line[0] == '\0') {
877 if (line_count == 0) {
878 if (s->is_connected_server) {
881 while (*p && !av_isspace(*p))
884 av_log(h, AV_LOG_TRACE, "Received method: %s\n", method);
886 if (av_strcasecmp(s->method, method)) {
887 av_log(h, AV_LOG_ERROR, "Received and expected HTTP method do not match. (%s expected, %s received)\n",
889 return ff_http_averror(400, AVERROR(EIO));
892 // use autodetected HTTP method to expect
893 av_log(h, AV_LOG_TRACE, "Autodetected %s HTTP method\n", auto_method);
894 if (av_strcasecmp(auto_method, method)) {
895 av_log(h, AV_LOG_ERROR, "Received and autodetected HTTP method did not match "
896 "(%s autodetected %s received)\n", auto_method, method);
897 return ff_http_averror(400, AVERROR(EIO));
899 if (!(s->method = av_strdup(method)))
900 return AVERROR(ENOMEM);
904 while (av_isspace(*p))
907 while (!av_isspace(*p))
910 av_log(h, AV_LOG_TRACE, "Requested resource: %s\n", resource);
911 if (!(s->resource = av_strdup(resource)))
912 return AVERROR(ENOMEM);
915 while (av_isspace(*p))
918 while (*p && !av_isspace(*p))
921 if (av_strncasecmp(version, "HTTP/", 5)) {
922 av_log(h, AV_LOG_ERROR, "Malformed HTTP version string.\n");
923 return ff_http_averror(400, AVERROR(EIO));
925 av_log(h, AV_LOG_TRACE, "HTTP version string: %s\n", version);
927 if (av_strncasecmp(p, "HTTP/1.0", 8) == 0)
929 while (*p != '/' && *p != '\0')
933 av_freep(&s->http_version);
934 s->http_version = av_strndup(p, 3);
935 while (!av_isspace(*p) && *p != '\0')
937 while (av_isspace(*p))
939 s->http_code = strtol(p, &end, 10);
941 av_log(h, AV_LOG_TRACE, "http_code=%d\n", s->http_code);
943 if ((ret = check_http_code(h, s->http_code, end)) < 0)
947 while (*p != '\0' && *p != ':')
955 while (av_isspace(*p))
957 if (!av_strcasecmp(tag, "Location")) {
958 if ((ret = parse_location(s, p)) < 0)
961 } else if (!av_strcasecmp(tag, "Content-Length") &&
962 s->filesize == UINT64_MAX) {
963 s->filesize = strtoull(p, NULL, 10);
964 } else if (!av_strcasecmp(tag, "Content-Range")) {
965 parse_content_range(h, p);
966 } else if (!av_strcasecmp(tag, "Accept-Ranges") &&
967 !strncmp(p, "bytes", 5) &&
970 } else if (!av_strcasecmp(tag, "Transfer-Encoding") &&
971 !av_strncasecmp(p, "chunked", 7)) {
972 s->filesize = UINT64_MAX;
974 } else if (!av_strcasecmp(tag, "WWW-Authenticate")) {
975 ff_http_auth_handle_header(&s->auth_state, tag, p);
976 } else if (!av_strcasecmp(tag, "Authentication-Info")) {
977 ff_http_auth_handle_header(&s->auth_state, tag, p);
978 } else if (!av_strcasecmp(tag, "Proxy-Authenticate")) {
979 ff_http_auth_handle_header(&s->proxy_auth_state, tag, p);
980 } else if (!av_strcasecmp(tag, "Connection")) {
981 if (!strcmp(p, "close"))
983 } else if (!av_strcasecmp(tag, "Server")) {
984 if (!av_strcasecmp(p, "AkamaiGHost")) {
986 } else if (!av_strncasecmp(p, "MediaGateway", 12)) {
987 s->is_mediagateway = 1;
989 } else if (!av_strcasecmp(tag, "Content-Type")) {
990 av_free(s->mime_type);
991 s->mime_type = av_strdup(p);
992 } else if (!av_strcasecmp(tag, "Set-Cookie")) {
993 if (parse_cookie(s, p, &s->cookie_dict))
994 av_log(h, AV_LOG_WARNING, "Unable to parse '%s'\n", p);
995 } else if (!av_strcasecmp(tag, "Icy-MetaInt")) {
996 s->icy_metaint = strtoull(p, NULL, 10);
997 } else if (!av_strncasecmp(tag, "Icy-", 4)) {
998 if ((ret = parse_icy(s, tag, p)) < 0)
1000 } else if (!av_strcasecmp(tag, "Content-Encoding")) {
1001 if ((ret = parse_content_encoding(h, p)) < 0)
1009 * Create a string containing cookie values for use as a HTTP cookie header
1010 * field value for a particular path and domain from the cookie values stored in
1011 * the HTTP protocol context. The cookie string is stored in *cookies.
1013 * @return a negative value if an error condition occurred, 0 otherwise
1015 static int get_cookies(HTTPContext *s, char **cookies, const char *path,
1018 // cookie strings will look like Set-Cookie header field values. Multiple
1019 // Set-Cookie fields will result in multiple values delimited by a newline
1021 char *cookie, *set_cookies = av_strdup(s->cookies), *next = set_cookies;
1023 if (!set_cookies) return AVERROR(EINVAL);
1025 // destroy any cookies in the dictionary.
1026 av_dict_free(&s->cookie_dict);
1029 while ((cookie = av_strtok(next, "\n", &next))) {
1030 AVDictionary *cookie_params = NULL;
1031 AVDictionaryEntry *cookie_entry, *e;
1033 // store the cookie in a dict in case it is updated in the response
1034 if (parse_cookie(s, cookie, &s->cookie_dict))
1035 av_log(s, AV_LOG_WARNING, "Unable to parse '%s'\n", cookie);
1037 // continue on to the next cookie if this one cannot be parsed
1038 if (parse_set_cookie(cookie, &cookie_params))
1041 // if the cookie has no value, skip it
1042 cookie_entry = av_dict_get(cookie_params, "", NULL, AV_DICT_IGNORE_SUFFIX);
1043 if (!cookie_entry || !cookie_entry->value) {
1044 av_dict_free(&cookie_params);
1048 // if the cookie has expired, don't add it
1049 if ((e = av_dict_get(cookie_params, "expires", NULL, 0)) && e->value) {
1050 struct tm tm_buf = {0};
1051 if (!parse_set_cookie_expiry_time(e->value, &tm_buf)) {
1052 if (av_timegm(&tm_buf) < av_gettime() / 1000000) {
1053 av_dict_free(&cookie_params);
1059 // if no domain in the cookie assume it appied to this request
1060 if ((e = av_dict_get(cookie_params, "domain", NULL, 0)) && e->value) {
1061 // find the offset comparison is on the min domain (b.com, not a.b.com)
1062 int domain_offset = strlen(domain) - strlen(e->value);
1063 if (domain_offset < 0) {
1064 av_dict_free(&cookie_params);
1068 // match the cookie domain
1069 if (av_strcasecmp(&domain[domain_offset], e->value)) {
1070 av_dict_free(&cookie_params);
1075 // ensure this cookie matches the path
1076 e = av_dict_get(cookie_params, "path", NULL, 0);
1077 if (!e || av_strncasecmp(path, e->value, strlen(e->value))) {
1078 av_dict_free(&cookie_params);
1082 // cookie parameters match, so copy the value
1084 if (!(*cookies = av_asprintf("%s=%s", cookie_entry->key, cookie_entry->value))) {
1085 ret = AVERROR(ENOMEM);
1089 char *tmp = *cookies;
1090 size_t str_size = strlen(cookie_entry->key) + strlen(cookie_entry->value) + strlen(*cookies) + 4;
1091 if (!(*cookies = av_malloc(str_size))) {
1092 ret = AVERROR(ENOMEM);
1096 snprintf(*cookies, str_size, "%s; %s=%s", tmp, cookie_entry->key, cookie_entry->value);
1101 av_free(set_cookies);
1106 static inline int has_header(const char *str, const char *header)
1108 /* header + 2 to skip over CRLF prefix. (make sure you have one!) */
1111 return av_stristart(str, header + 2, NULL) || av_stristr(str, header);
1114 static int http_read_header(URLContext *h, int *new_location)
1116 HTTPContext *s = h->priv_data;
1117 char line[MAX_URL_SIZE];
1120 s->chunksize = UINT64_MAX;
1123 if ((err = http_get_line(s, line, sizeof(line))) < 0)
1126 av_log(h, AV_LOG_TRACE, "header='%s'\n", line);
1128 err = process_line(h, line, s->line_count, new_location);
1136 if (s->seekable == -1 && s->is_mediagateway && s->filesize == 2000000000)
1137 h->is_streamed = 1; /* we can in fact _not_ seek */
1139 // add any new cookies into the existing cookie string
1140 cookie_string(s->cookie_dict, &s->cookies);
1141 av_dict_free(&s->cookie_dict);
1146 static int http_connect(URLContext *h, const char *path, const char *local_path,
1147 const char *hoststr, const char *auth,
1148 const char *proxyauth, int *new_location)
1150 HTTPContext *s = h->priv_data;
1152 char headers[HTTP_HEADERS_SIZE] = "";
1153 char *authstr = NULL, *proxyauthstr = NULL;
1154 uint64_t off = s->off;
1157 int send_expect_100 = 0;
1160 /* send http header */
1161 post = h->flags & AVIO_FLAG_WRITE;
1164 /* force POST method and disable chunked encoding when
1165 * custom HTTP post data is set */
1167 s->chunked_post = 0;
1173 method = post ? "POST" : "GET";
1175 authstr = ff_http_auth_create_response(&s->auth_state, auth,
1176 local_path, method);
1177 proxyauthstr = ff_http_auth_create_response(&s->proxy_auth_state, proxyauth,
1178 local_path, method);
1179 if (post && !s->post_data) {
1180 send_expect_100 = s->send_expect_100;
1181 /* The user has supplied authentication but we don't know the auth type,
1182 * send Expect: 100-continue to get the 401 response including the
1183 * WWW-Authenticate header, or an 100 continue if no auth actually
1185 if (auth && *auth &&
1186 s->auth_state.auth_type == HTTP_AUTH_NONE &&
1187 s->http_code != 401)
1188 send_expect_100 = 1;
1191 #if FF_API_HTTP_USER_AGENT
1192 if (strcmp(s->user_agent_deprecated, DEFAULT_USER_AGENT)) {
1193 av_log(s, AV_LOG_WARNING, "the user-agent option is deprecated, please use user_agent option\n");
1194 s->user_agent = av_strdup(s->user_agent_deprecated);
1197 /* set default headers if needed */
1198 if (!has_header(s->headers, "\r\nUser-Agent: "))
1199 len += av_strlcatf(headers + len, sizeof(headers) - len,
1200 "User-Agent: %s\r\n", s->user_agent);
1201 if (!has_header(s->headers, "\r\nAccept: "))
1202 len += av_strlcpy(headers + len, "Accept: */*\r\n",
1203 sizeof(headers) - len);
1204 // Note: we send this on purpose even when s->off is 0 when we're probing,
1205 // since it allows us to detect more reliably if a (non-conforming)
1206 // server supports seeking by analysing the reply headers.
1207 if (!has_header(s->headers, "\r\nRange: ") && !post && (s->off > 0 || s->end_off || s->seekable == -1)) {
1208 len += av_strlcatf(headers + len, sizeof(headers) - len,
1209 "Range: bytes=%"PRIu64"-", s->off);
1211 len += av_strlcatf(headers + len, sizeof(headers) - len,
1212 "%"PRId64, s->end_off - 1);
1213 len += av_strlcpy(headers + len, "\r\n",
1214 sizeof(headers) - len);
1216 if (send_expect_100 && !has_header(s->headers, "\r\nExpect: "))
1217 len += av_strlcatf(headers + len, sizeof(headers) - len,
1218 "Expect: 100-continue\r\n");
1220 if (!has_header(s->headers, "\r\nConnection: ")) {
1221 if (s->multiple_requests)
1222 len += av_strlcpy(headers + len, "Connection: keep-alive\r\n",
1223 sizeof(headers) - len);
1225 len += av_strlcpy(headers + len, "Connection: close\r\n",
1226 sizeof(headers) - len);
1229 if (!has_header(s->headers, "\r\nHost: "))
1230 len += av_strlcatf(headers + len, sizeof(headers) - len,
1231 "Host: %s\r\n", hoststr);
1232 if (!has_header(s->headers, "\r\nContent-Length: ") && s->post_data)
1233 len += av_strlcatf(headers + len, sizeof(headers) - len,
1234 "Content-Length: %d\r\n", s->post_datalen);
1236 if (!has_header(s->headers, "\r\nContent-Type: ") && s->content_type)
1237 len += av_strlcatf(headers + len, sizeof(headers) - len,
1238 "Content-Type: %s\r\n", s->content_type);
1239 if (!has_header(s->headers, "\r\nCookie: ") && s->cookies) {
1240 char *cookies = NULL;
1241 if (!get_cookies(s, &cookies, path, hoststr) && cookies) {
1242 len += av_strlcatf(headers + len, sizeof(headers) - len,
1243 "Cookie: %s\r\n", cookies);
1247 if (!has_header(s->headers, "\r\nIcy-MetaData: ") && s->icy)
1248 len += av_strlcatf(headers + len, sizeof(headers) - len,
1249 "Icy-MetaData: %d\r\n", 1);
1251 /* now add in custom headers */
1253 av_strlcpy(headers + len, s->headers, sizeof(headers) - len);
1255 ret = snprintf(s->buffer, sizeof(s->buffer),
1256 "%s %s HTTP/1.1\r\n"
1264 post && s->chunked_post ? "Transfer-Encoding: chunked\r\n" : "",
1266 authstr ? authstr : "",
1267 proxyauthstr ? "Proxy-" : "", proxyauthstr ? proxyauthstr : "");
1269 av_log(h, AV_LOG_DEBUG, "request: %s\n", s->buffer);
1271 if (strlen(headers) + 1 == sizeof(headers) ||
1272 ret >= sizeof(s->buffer)) {
1273 av_log(h, AV_LOG_ERROR, "overlong headers\n");
1274 err = AVERROR(EINVAL);
1279 if ((err = ffurl_write(s->hd, s->buffer, strlen(s->buffer))) < 0)
1283 if ((err = ffurl_write(s->hd, s->post_data, s->post_datalen)) < 0)
1286 /* init input buffer */
1287 s->buf_ptr = s->buffer;
1288 s->buf_end = s->buffer;
1291 s->icy_data_read = 0;
1292 s->filesize = UINT64_MAX;
1294 s->end_chunked_post = 0;
1299 if (post && !s->post_data && !send_expect_100) {
1300 /* Pretend that it did work. We didn't read any header yet, since
1301 * we've still to send the POST data, but the code calling this
1302 * function will check http_code after we return. */
1308 /* wait for header */
1309 err = http_read_header(h, new_location);
1316 err = (off == s->off) ? 0 : -1;
1319 av_freep(&proxyauthstr);
1323 static int http_buf_read(URLContext *h, uint8_t *buf, int size)
1325 HTTPContext *s = h->priv_data;
1328 if (s->chunksize != UINT64_MAX) {
1332 if (!s->chunksize) {
1337 if ((err = http_get_line(s, line, sizeof(line))) < 0)
1339 } while (!*line); /* skip CR LF from last chunk */
1341 s->chunksize = strtoull(line, NULL, 16);
1343 av_log(h, AV_LOG_TRACE,
1344 "Chunked encoding data size: %"PRIu64"\n",
1347 if (!s->chunksize && s->multiple_requests) {
1348 http_get_line(s, line, sizeof(line)); // read empty chunk
1352 else if (!s->chunksize) {
1353 av_log(h, AV_LOG_DEBUG, "Last chunk received, closing conn\n");
1354 ffurl_closep(&s->hd);
1357 else if (s->chunksize == UINT64_MAX) {
1358 av_log(h, AV_LOG_ERROR, "Invalid chunk size %"PRIu64"\n",
1360 return AVERROR(EINVAL);
1363 size = FFMIN(size, s->chunksize);
1366 /* read bytes from input buffer first */
1367 len = s->buf_end - s->buf_ptr;
1371 memcpy(buf, s->buf_ptr, len);
1374 uint64_t target_end = s->end_off ? s->end_off : s->filesize;
1375 if ((!s->willclose || s->chunksize == UINT64_MAX) && s->off >= target_end)
1377 len = ffurl_read(s->hd, buf, size);
1378 if (!len && (!s->willclose || s->chunksize == UINT64_MAX) && s->off < target_end) {
1379 av_log(h, AV_LOG_ERROR,
1380 "Stream ends prematurely at %"PRIu64", should be %"PRIu64"\n",
1383 return AVERROR(EIO);
1388 if (s->chunksize > 0 && s->chunksize != UINT64_MAX) {
1389 av_assert0(s->chunksize >= len);
1390 s->chunksize -= len;
1397 #define DECOMPRESS_BUF_SIZE (256 * 1024)
1398 static int http_buf_read_compressed(URLContext *h, uint8_t *buf, int size)
1400 HTTPContext *s = h->priv_data;
1403 if (!s->inflate_buffer) {
1404 s->inflate_buffer = av_malloc(DECOMPRESS_BUF_SIZE);
1405 if (!s->inflate_buffer)
1406 return AVERROR(ENOMEM);
1409 if (s->inflate_stream.avail_in == 0) {
1410 int read = http_buf_read(h, s->inflate_buffer, DECOMPRESS_BUF_SIZE);
1413 s->inflate_stream.next_in = s->inflate_buffer;
1414 s->inflate_stream.avail_in = read;
1417 s->inflate_stream.avail_out = size;
1418 s->inflate_stream.next_out = buf;
1420 ret = inflate(&s->inflate_stream, Z_SYNC_FLUSH);
1421 if (ret != Z_OK && ret != Z_STREAM_END)
1422 av_log(h, AV_LOG_WARNING, "inflate return value: %d, %s\n",
1423 ret, s->inflate_stream.msg);
1425 return size - s->inflate_stream.avail_out;
1427 #endif /* CONFIG_ZLIB */
1429 static int64_t http_seek_internal(URLContext *h, int64_t off, int whence, int force_reconnect);
1431 static int http_read_stream(URLContext *h, uint8_t *buf, int size)
1433 HTTPContext *s = h->priv_data;
1434 int err, new_location, read_ret;
1436 int reconnect_delay = 0;
1441 if (s->end_chunked_post && !s->end_header) {
1442 err = http_read_header(h, &new_location);
1449 return http_buf_read_compressed(h, buf, size);
1450 #endif /* CONFIG_ZLIB */
1451 read_ret = http_buf_read(h, buf, size);
1452 while (read_ret < 0) {
1453 uint64_t target = h->is_streamed ? 0 : s->off;
1455 if (read_ret == AVERROR_EXIT)
1458 if (h->is_streamed && !s->reconnect_streamed)
1461 if (!(s->reconnect && s->filesize > 0 && s->off < s->filesize) &&
1462 !(s->reconnect_at_eof && read_ret == AVERROR_EOF))
1465 if (reconnect_delay > s->reconnect_delay_max)
1466 return AVERROR(EIO);
1468 av_log(h, AV_LOG_WARNING, "Will reconnect at %"PRIu64" in %d second(s), error=%s.\n", s->off, reconnect_delay, av_err2str(read_ret));
1469 err = ff_network_sleep_interruptible(1000U*1000*reconnect_delay, &h->interrupt_callback);
1470 if (err != AVERROR(ETIMEDOUT))
1472 reconnect_delay = 1 + 2*reconnect_delay;
1473 seek_ret = http_seek_internal(h, target, SEEK_SET, 1);
1474 if (seek_ret >= 0 && seek_ret != target) {
1475 av_log(h, AV_LOG_ERROR, "Failed to reconnect at %"PRIu64".\n", target);
1479 read_ret = http_buf_read(h, buf, size);
1485 // Like http_read_stream(), but no short reads.
1486 // Assumes partial reads are an error.
1487 static int http_read_stream_all(URLContext *h, uint8_t *buf, int size)
1490 while (pos < size) {
1491 int len = http_read_stream(h, buf + pos, size - pos);
1499 static void update_metadata(HTTPContext *s, char *data)
1508 val = strstr(key, "='");
1511 end = strstr(val, "';");
1519 av_dict_set(&s->metadata, key, val, 0);
1525 static int store_icy(URLContext *h, int size)
1527 HTTPContext *s = h->priv_data;
1528 /* until next metadata packet */
1531 if (s->icy_metaint < s->icy_data_read)
1532 return AVERROR_INVALIDDATA;
1533 remaining = s->icy_metaint - s->icy_data_read;
1536 /* The metadata packet is variable sized. It has a 1 byte header
1537 * which sets the length of the packet (divided by 16). If it's 0,
1538 * the metadata doesn't change. After the packet, icy_metaint bytes
1539 * of normal data follows. */
1541 int len = http_read_stream_all(h, &ch, 1);
1545 char data[255 * 16 + 1];
1548 ret = http_read_stream_all(h, data, len);
1552 if ((ret = av_opt_set(s, "icy_metadata_packet", data, 0)) < 0)
1554 update_metadata(s, data);
1556 s->icy_data_read = 0;
1557 remaining = s->icy_metaint;
1560 return FFMIN(size, remaining);
1563 static int http_read(URLContext *h, uint8_t *buf, int size)
1565 HTTPContext *s = h->priv_data;
1567 if (s->icy_metaint > 0) {
1568 size = store_icy(h, size);
1573 size = http_read_stream(h, buf, size);
1575 s->icy_data_read += size;
1579 /* used only when posting data */
1580 static int http_write(URLContext *h, const uint8_t *buf, int size)
1582 char temp[11] = ""; /* 32-bit hex + CRLF + nul */
1584 char crlf[] = "\r\n";
1585 HTTPContext *s = h->priv_data;
1587 if (!s->chunked_post) {
1588 /* non-chunked data is sent without any special encoding */
1589 return ffurl_write(s->hd, buf, size);
1592 /* silently ignore zero-size data since chunk encoding that would
1595 /* upload data using chunked encoding */
1596 snprintf(temp, sizeof(temp), "%x\r\n", size);
1598 if ((ret = ffurl_write(s->hd, temp, strlen(temp))) < 0 ||
1599 (ret = ffurl_write(s->hd, buf, size)) < 0 ||
1600 (ret = ffurl_write(s->hd, crlf, sizeof(crlf) - 1)) < 0)
1606 static int http_shutdown(URLContext *h, int flags)
1609 char footer[] = "0\r\n\r\n";
1610 HTTPContext *s = h->priv_data;
1612 /* signal end of chunked encoding if used */
1613 if (((flags & AVIO_FLAG_WRITE) && s->chunked_post) ||
1614 ((flags & AVIO_FLAG_READ) && s->chunked_post && s->listen)) {
1615 ret = ffurl_write(s->hd, footer, sizeof(footer) - 1);
1616 ret = ret > 0 ? 0 : ret;
1617 s->end_chunked_post = 1;
1623 static int http_close(URLContext *h)
1626 HTTPContext *s = h->priv_data;
1629 inflateEnd(&s->inflate_stream);
1630 av_freep(&s->inflate_buffer);
1631 #endif /* CONFIG_ZLIB */
1633 if (!s->end_chunked_post)
1634 /* Close the write direction by sending the end of chunked encoding. */
1635 ret = http_shutdown(h, h->flags);
1638 ffurl_closep(&s->hd);
1639 av_dict_free(&s->chained_options);
1643 static int64_t http_seek_internal(URLContext *h, int64_t off, int whence, int force_reconnect)
1645 HTTPContext *s = h->priv_data;
1646 URLContext *old_hd = s->hd;
1647 uint64_t old_off = s->off;
1648 uint8_t old_buf[BUFFER_SIZE];
1649 int old_buf_size, ret;
1650 AVDictionary *options = NULL;
1652 if (whence == AVSEEK_SIZE)
1654 else if (!force_reconnect &&
1655 ((whence == SEEK_CUR && off == 0) ||
1656 (whence == SEEK_SET && off == s->off)))
1658 else if ((s->filesize == UINT64_MAX && whence == SEEK_END))
1659 return AVERROR(ENOSYS);
1661 if (whence == SEEK_CUR)
1663 else if (whence == SEEK_END)
1665 else if (whence != SEEK_SET)
1666 return AVERROR(EINVAL);
1668 return AVERROR(EINVAL);
1671 if (s->off && h->is_streamed)
1672 return AVERROR(ENOSYS);
1674 /* we save the old context in case the seek fails */
1675 old_buf_size = s->buf_end - s->buf_ptr;
1676 memcpy(old_buf, s->buf_ptr, old_buf_size);
1679 /* if it fails, continue on old connection */
1680 if ((ret = http_open_cnx(h, &options)) < 0) {
1681 av_dict_free(&options);
1682 memcpy(s->buffer, old_buf, old_buf_size);
1683 s->buf_ptr = s->buffer;
1684 s->buf_end = s->buffer + old_buf_size;
1689 av_dict_free(&options);
1690 ffurl_close(old_hd);
1694 static int64_t http_seek(URLContext *h, int64_t off, int whence)
1696 return http_seek_internal(h, off, whence, 0);
1699 static int http_get_file_handle(URLContext *h)
1701 HTTPContext *s = h->priv_data;
1702 return ffurl_get_file_handle(s->hd);
1705 static int http_get_short_seek(URLContext *h)
1707 HTTPContext *s = h->priv_data;
1708 return ffurl_get_short_seek(s->hd);
1711 #define HTTP_CLASS(flavor) \
1712 static const AVClass flavor ## _context_class = { \
1713 .class_name = # flavor, \
1714 .item_name = av_default_item_name, \
1715 .option = options, \
1716 .version = LIBAVUTIL_VERSION_INT, \
1719 #if CONFIG_HTTP_PROTOCOL
1722 const URLProtocol ff_http_protocol = {
1724 .url_open2 = http_open,
1725 .url_accept = http_accept,
1726 .url_handshake = http_handshake,
1727 .url_read = http_read,
1728 .url_write = http_write,
1729 .url_seek = http_seek,
1730 .url_close = http_close,
1731 .url_get_file_handle = http_get_file_handle,
1732 .url_get_short_seek = http_get_short_seek,
1733 .url_shutdown = http_shutdown,
1734 .priv_data_size = sizeof(HTTPContext),
1735 .priv_data_class = &http_context_class,
1736 .flags = URL_PROTOCOL_FLAG_NETWORK,
1737 .default_whitelist = "http,https,tls,rtp,tcp,udp,crypto,httpproxy"
1739 #endif /* CONFIG_HTTP_PROTOCOL */
1741 #if CONFIG_HTTPS_PROTOCOL
1744 const URLProtocol ff_https_protocol = {
1746 .url_open2 = http_open,
1747 .url_read = http_read,
1748 .url_write = http_write,
1749 .url_seek = http_seek,
1750 .url_close = http_close,
1751 .url_get_file_handle = http_get_file_handle,
1752 .url_get_short_seek = http_get_short_seek,
1753 .url_shutdown = http_shutdown,
1754 .priv_data_size = sizeof(HTTPContext),
1755 .priv_data_class = &https_context_class,
1756 .flags = URL_PROTOCOL_FLAG_NETWORK,
1757 .default_whitelist = "http,https,tls,rtp,tcp,udp,crypto,httpproxy"
1759 #endif /* CONFIG_HTTPS_PROTOCOL */
1761 #if CONFIG_HTTPPROXY_PROTOCOL
1762 static int http_proxy_close(URLContext *h)
1764 HTTPContext *s = h->priv_data;
1766 ffurl_closep(&s->hd);
1770 static int http_proxy_open(URLContext *h, const char *uri, int flags)
1772 HTTPContext *s = h->priv_data;
1773 char hostname[1024], hoststr[1024];
1774 char auth[1024], pathbuf[1024], *path;
1775 char lower_url[100];
1776 int port, ret = 0, attempts = 0;
1777 HTTPAuthType cur_auth_type;
1781 if( s->seekable == 1 )
1786 av_url_split(NULL, 0, auth, sizeof(auth), hostname, sizeof(hostname), &port,
1787 pathbuf, sizeof(pathbuf), uri);
1788 ff_url_join(hoststr, sizeof(hoststr), NULL, NULL, hostname, port, NULL);
1793 ff_url_join(lower_url, sizeof(lower_url), "tcp", NULL, hostname, port,
1796 ret = ffurl_open_whitelist(&s->hd, lower_url, AVIO_FLAG_READ_WRITE,
1797 &h->interrupt_callback, NULL,
1798 h->protocol_whitelist, h->protocol_blacklist, h);
1802 authstr = ff_http_auth_create_response(&s->proxy_auth_state, auth,
1804 snprintf(s->buffer, sizeof(s->buffer),
1805 "CONNECT %s HTTP/1.1\r\n"
1807 "Connection: close\r\n"
1812 authstr ? "Proxy-" : "", authstr ? authstr : "");
1815 if ((ret = ffurl_write(s->hd, s->buffer, strlen(s->buffer))) < 0)
1818 s->buf_ptr = s->buffer;
1819 s->buf_end = s->buffer;
1821 s->filesize = UINT64_MAX;
1822 cur_auth_type = s->proxy_auth_state.auth_type;
1824 /* Note: This uses buffering, potentially reading more than the
1825 * HTTP header. If tunneling a protocol where the server starts
1826 * the conversation, we might buffer part of that here, too.
1827 * Reading that requires using the proper ffurl_read() function
1828 * on this URLContext, not using the fd directly (as the tls
1829 * protocol does). This shouldn't be an issue for tls though,
1830 * since the client starts the conversation there, so there
1831 * is no extra data that we might buffer up here.
1833 ret = http_read_header(h, &new_loc);
1838 if (s->http_code == 407 &&
1839 (cur_auth_type == HTTP_AUTH_NONE || s->proxy_auth_state.stale) &&
1840 s->proxy_auth_state.auth_type != HTTP_AUTH_NONE && attempts < 2) {
1841 ffurl_closep(&s->hd);
1845 if (s->http_code < 400)
1847 ret = ff_http_averror(s->http_code, AVERROR(EIO));
1850 http_proxy_close(h);
1854 static int http_proxy_write(URLContext *h, const uint8_t *buf, int size)
1856 HTTPContext *s = h->priv_data;
1857 return ffurl_write(s->hd, buf, size);
1860 const URLProtocol ff_httpproxy_protocol = {
1861 .name = "httpproxy",
1862 .url_open = http_proxy_open,
1863 .url_read = http_buf_read,
1864 .url_write = http_proxy_write,
1865 .url_close = http_proxy_close,
1866 .url_get_file_handle = http_get_file_handle,
1867 .priv_data_size = sizeof(HTTPContext),
1868 .flags = URL_PROTOCOL_FLAG_NETWORK,
1870 #endif /* CONFIG_HTTPPROXY_PROTOCOL */