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http.c
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1 /*
2  * HTTP protocol for ffmpeg client
3  * Copyright (c) 2000, 2001 Fabrice Bellard
4  *
5  * This file is part of FFmpeg.
6  *
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.
11  *
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.
16  *
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
20  */
21 
22 #include "config.h"
23 
24 #if CONFIG_ZLIB
25 #include <zlib.h>
26 #endif /* CONFIG_ZLIB */
27 
28 #include "libavutil/avassert.h"
29 #include "libavutil/avstring.h"
30 #include "libavutil/opt.h"
31 #include "libavutil/time.h"
32 
33 #include "avformat.h"
34 #include "http.h"
35 #include "httpauth.h"
36 #include "internal.h"
37 #include "network.h"
38 #include "os_support.h"
39 #include "url.h"
40 
41 /* XXX: POST protocol is not completely implemented because ffmpeg uses
42  * only a subset of it. */
43 
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
46  * path names). */
47 #define BUFFER_SIZE MAX_URL_SIZE
48 #define MAX_REDIRECTS 8
49 #define HTTP_SINGLE 1
50 #define HTTP_MUTLI 2
51 typedef enum {
57 
58 typedef struct HTTPContext {
59  const AVClass *class;
61  unsigned char buffer[BUFFER_SIZE], *buf_ptr, *buf_end;
63  int http_code;
64  /* Used if "Transfer-Encoding: chunked" otherwise -1. */
65  int64_t chunksize;
66  int64_t off, end_off, filesize;
67  char *location;
70  char *http_proxy;
71  char *headers;
72  char *mime_type;
73  char *user_agent;
74  char *content_type;
75  /* Set if the server correctly handles Connection: close and will close
76  * the connection after feeding us the content. */
77  int willclose;
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. */
88  int is_akamai;
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 */
93  int icy;
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 */
101 #if CONFIG_ZLIB
102  int compressed;
103  z_stream inflate_stream;
104  uint8_t *inflate_buffer;
105 #endif /* CONFIG_ZLIB */
108  char *method;
114  int listen;
115  char *resource;
120 } HTTPContext;
121 
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)
126 
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},
158  { NULL }
159 };
160 
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);
165 
167 {
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));
174 }
175 
177 {
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;
185 
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);
190 
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);
194 
195  if (!strcmp(proto, "https")) {
196  lower_proto = "tls";
197  use_proxy = 0;
198  if (port < 0)
199  port = 443;
200  }
201  if (port < 0)
202  port = 80;
203 
204  if (path1[0] == '\0')
205  path = "/";
206  else
207  path = path1;
208  local_path = path;
209  if (use_proxy) {
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",
213  path1);
214  path = urlbuf;
215  av_url_split(NULL, 0, proxyauth, sizeof(proxyauth),
216  hostname, sizeof(hostname), &port, NULL, 0, proxy_path);
217  }
218 
219  ff_url_join(buf, sizeof(buf), lower_proto, NULL, hostname, port, NULL);
220 
221  if (!s->hd) {
223  &h->interrupt_callback, options,
225  if (err < 0)
226  return err;
227  }
228 
229  err = http_connect(h, path, local_path, hoststr,
230  auth, proxyauth, &location_changed);
231  if (err < 0)
232  return err;
233 
234  return location_changed;
235 }
236 
237 /* return non zero if error */
238 static int http_open_cnx(URLContext *h, AVDictionary **options)
239 {
240  HTTPAuthType cur_auth_type, cur_proxy_auth_type;
241  HTTPContext *s = h->priv_data;
242  int location_changed, attempts = 0, redirects = 0;
243 redo:
244  av_dict_copy(options, s->chained_options, 0);
245 
246  cur_auth_type = s->auth_state.auth_type;
247  cur_proxy_auth_type = s->auth_state.auth_type;
248 
249  location_changed = http_open_cnx_internal(h, options);
250  if (location_changed < 0)
251  goto fail;
252 
253  attempts++;
254  if (s->http_code == 401) {
255  if ((cur_auth_type == HTTP_AUTH_NONE || s->auth_state.stale) &&
256  s->auth_state.auth_type != HTTP_AUTH_NONE && attempts < 4) {
257  ffurl_closep(&s->hd);
258  goto redo;
259  } else
260  goto fail;
261  }
262  if (s->http_code == 407) {
263  if ((cur_proxy_auth_type == HTTP_AUTH_NONE || s->proxy_auth_state.stale) &&
264  s->proxy_auth_state.auth_type != HTTP_AUTH_NONE && attempts < 4) {
265  ffurl_closep(&s->hd);
266  goto redo;
267  } else
268  goto fail;
269  }
270  if ((s->http_code == 301 || s->http_code == 302 ||
271  s->http_code == 303 || s->http_code == 307) &&
272  location_changed == 1) {
273  /* url moved, get next */
274  ffurl_closep(&s->hd);
275  if (redirects++ >= MAX_REDIRECTS)
276  return AVERROR(EIO);
277  /* Restart the authentication process with the new target, which
278  * might use a different auth mechanism. */
279  memset(&s->auth_state, 0, sizeof(s->auth_state));
280  attempts = 0;
281  location_changed = 0;
282  goto redo;
283  }
284  return 0;
285 
286 fail:
287  if (s->hd)
288  ffurl_closep(&s->hd);
289  if (location_changed < 0)
290  return location_changed;
291  return ff_http_averror(s->http_code, AVERROR(EIO));
292 }
293 
294 int ff_http_do_new_request(URLContext *h, const char *uri)
295 {
296  HTTPContext *s = h->priv_data;
297  AVDictionary *options = NULL;
298  int ret;
299 
300  s->off = 0;
301  s->icy_data_read = 0;
302  av_free(s->location);
303  s->location = av_strdup(uri);
304  if (!s->location)
305  return AVERROR(ENOMEM);
306 
307  ret = http_open_cnx(h, &options);
308  av_dict_free(&options);
309  return ret;
310 }
311 
312 int ff_http_averror(int status_code, int default_averror)
313 {
314  switch (status_code) {
315  case 400: return AVERROR_HTTP_BAD_REQUEST;
316  case 401: return AVERROR_HTTP_UNAUTHORIZED;
317  case 403: return AVERROR_HTTP_FORBIDDEN;
318  case 404: return AVERROR_HTTP_NOT_FOUND;
319  default: break;
320  }
321  if (status_code >= 400 && status_code <= 499)
322  return AVERROR_HTTP_OTHER_4XX;
323  else if (status_code >= 500)
325  else
326  return default_averror;
327 }
328 
329 static int http_write_reply(URLContext* h, int status_code)
330 {
331  int ret, body = 0, reply_code, message_len;
332  const char *reply_text, *content_type;
333  HTTPContext *s = h->priv_data;
334  char message[BUFFER_SIZE];
335  content_type = "text/plain";
336 
337  if (status_code < 0)
338  body = 1;
339  switch (status_code) {
341  case 400:
342  reply_code = 400;
343  reply_text = "Bad Request";
344  break;
346  case 403:
347  reply_code = 403;
348  reply_text = "Forbidden";
349  break;
351  case 404:
352  reply_code = 404;
353  reply_text = "Not Found";
354  break;
355  case 200:
356  reply_code = 200;
357  reply_text = "OK";
358  content_type = "application/octet-stream";
359  break;
361  case 500:
362  reply_code = 500;
363  reply_text = "Internal server error";
364  break;
365  default:
366  return AVERROR(EINVAL);
367  }
368  if (body) {
369  s->chunked_post = 0;
370  message_len = snprintf(message, sizeof(message),
371  "HTTP/1.1 %03d %s\r\n"
372  "Content-Type: %s\r\n"
373  "Content-Length: %"SIZE_SPECIFIER"\r\n"
374  "\r\n"
375  "%03d %s\r\n",
376  reply_code,
377  reply_text,
378  content_type,
379  strlen(reply_text) + 6, // 3 digit status code + space + \r\n
380  reply_code,
381  reply_text);
382  } else {
383  s->chunked_post = 1;
384  message_len = snprintf(message, sizeof(message),
385  "HTTP/1.1 %03d %s\r\n"
386  "Content-Type: %s\r\n"
387  "Transfer-Encoding: chunked\r\n"
388  "\r\n",
389  reply_code,
390  reply_text,
391  content_type);
392  }
393  av_log(h, AV_LOG_TRACE, "HTTP reply header: \n%s----\n", message);
394  if ((ret = ffurl_write(s->hd, message, message_len)) < 0)
395  return ret;
396  return 0;
397 }
398 
399 static void handle_http_errors(URLContext *h, int error)
400 {
401  av_assert0(error < 0);
402  http_write_reply(h, error);
403 }
404 
406 {
407  int ret, err, new_location;
408  HTTPContext *ch = c->priv_data;
409  URLContext *cl = ch->hd;
410  switch (ch->handshake_step) {
411  case LOWER_PROTO:
412  av_log(c, AV_LOG_TRACE, "Lower protocol\n");
413  if ((ret = ffurl_handshake(cl)) > 0)
414  return 2 + ret;
415  if (ret < 0)
416  return ret;
418  ch->is_connected_server = 1;
419  return 2;
420  case READ_HEADERS:
421  av_log(c, AV_LOG_TRACE, "Read headers\n");
422  if ((err = http_read_header(c, &new_location)) < 0) {
423  handle_http_errors(c, err);
424  return err;
425  }
427  return 1;
428  case WRITE_REPLY_HEADERS:
429  av_log(c, AV_LOG_TRACE, "Reply code: %d\n", ch->reply_code);
430  if ((err = http_write_reply(c, ch->reply_code)) < 0)
431  return err;
432  ch->handshake_step = FINISH;
433  return 1;
434  case FINISH:
435  return 0;
436  }
437  // this should never be reached.
438  return AVERROR(EINVAL);
439 }
440 
441 static int http_listen(URLContext *h, const char *uri, int flags,
442  AVDictionary **options) {
443  HTTPContext *s = h->priv_data;
444  int ret;
445  char hostname[1024], proto[10];
446  char lower_url[100];
447  const char *lower_proto = "tcp";
448  int port;
449  av_url_split(proto, sizeof(proto), NULL, 0, hostname, sizeof(hostname), &port,
450  NULL, 0, uri);
451  if (!strcmp(proto, "https"))
452  lower_proto = "tls";
453  ff_url_join(lower_url, sizeof(lower_url), lower_proto, NULL, hostname, port,
454  NULL);
455  if ((ret = av_dict_set_int(options, "listen", s->listen, 0)) < 0)
456  goto fail;
457  if ((ret = ffurl_open_whitelist(&s->hd, lower_url, AVIO_FLAG_READ_WRITE,
458  &h->interrupt_callback, options,
460  )) < 0)
461  goto fail;
463  if (s->listen == HTTP_SINGLE) { /* single client */
464  s->reply_code = 200;
465  while ((ret = http_handshake(h)) > 0);
466  }
467 fail:
469  return ret;
470 }
471 
472 static int http_open(URLContext *h, const char *uri, int flags,
473  AVDictionary **options)
474 {
475  HTTPContext *s = h->priv_data;
476  int ret;
477 
478  if( s->seekable == 1 )
479  h->is_streamed = 0;
480  else
481  h->is_streamed = 1;
482 
483  s->filesize = -1;
484  s->location = av_strdup(uri);
485  if (!s->location)
486  return AVERROR(ENOMEM);
487  if (options)
488  av_dict_copy(&s->chained_options, *options, 0);
489 
490  if (s->headers) {
491  int len = strlen(s->headers);
492  if (len < 2 || strcmp("\r\n", s->headers + len - 2)) {
494  "No trailing CRLF found in HTTP header.\n");
495  ret = av_reallocp(&s->headers, len + 3);
496  if (ret < 0)
497  return ret;
498  s->headers[len] = '\r';
499  s->headers[len + 1] = '\n';
500  s->headers[len + 2] = '\0';
501  }
502  }
503 
504  if (s->listen) {
505  return http_listen(h, uri, flags, options);
506  }
507  ret = http_open_cnx(h, options);
508  if (ret < 0)
510  return ret;
511 }
512 
514 {
515  int ret;
516  HTTPContext *sc = s->priv_data;
517  HTTPContext *cc;
518  URLContext *sl = sc->hd;
519  URLContext *cl = NULL;
520 
521  av_assert0(sc->listen);
522  if ((ret = ffurl_alloc(c, s->filename, s->flags, &sl->interrupt_callback)) < 0)
523  goto fail;
524  cc = (*c)->priv_data;
525  if ((ret = ffurl_accept(sl, &cl)) < 0)
526  goto fail;
527  cc->hd = cl;
528  cc->is_multi_client = 1;
529 fail:
530  return ret;
531 }
532 
533 static int http_getc(HTTPContext *s)
534 {
535  int len;
536  if (s->buf_ptr >= s->buf_end) {
537  len = ffurl_read(s->hd, s->buffer, BUFFER_SIZE);
538  if (len < 0) {
539  return len;
540  } else if (len == 0) {
541  return AVERROR_EOF;
542  } else {
543  s->buf_ptr = s->buffer;
544  s->buf_end = s->buffer + len;
545  }
546  }
547  return *s->buf_ptr++;
548 }
549 
550 static int http_get_line(HTTPContext *s, char *line, int line_size)
551 {
552  int ch;
553  char *q;
554 
555  q = line;
556  for (;;) {
557  ch = http_getc(s);
558  if (ch < 0)
559  return ch;
560  if (ch == '\n') {
561  /* process line */
562  if (q > line && q[-1] == '\r')
563  q--;
564  *q = '\0';
565 
566  return 0;
567  } else {
568  if ((q - line) < line_size - 1)
569  *q++ = ch;
570  }
571  }
572 }
573 
574 static int check_http_code(URLContext *h, int http_code, const char *end)
575 {
576  HTTPContext *s = h->priv_data;
577  /* error codes are 4xx and 5xx, but regard 401 as a success, so we
578  * don't abort until all headers have been parsed. */
579  if (http_code >= 400 && http_code < 600 &&
580  (http_code != 401 || s->auth_state.auth_type != HTTP_AUTH_NONE) &&
581  (http_code != 407 || s->proxy_auth_state.auth_type != HTTP_AUTH_NONE)) {
582  end += strspn(end, SPACE_CHARS);
583  av_log(h, AV_LOG_WARNING, "HTTP error %d %s\n", http_code, end);
584  return ff_http_averror(http_code, AVERROR(EIO));
585  }
586  return 0;
587 }
588 
589 static int parse_location(HTTPContext *s, const char *p)
590 {
591  char redirected_location[MAX_URL_SIZE], *new_loc;
592  ff_make_absolute_url(redirected_location, sizeof(redirected_location),
593  s->location, p);
594  new_loc = av_strdup(redirected_location);
595  if (!new_loc)
596  return AVERROR(ENOMEM);
597  av_free(s->location);
598  s->location = new_loc;
599  return 0;
600 }
601 
602 /* "bytes $from-$to/$document_size" */
603 static void parse_content_range(URLContext *h, const char *p)
604 {
605  HTTPContext *s = h->priv_data;
606  const char *slash;
607 
608  if (!strncmp(p, "bytes ", 6)) {
609  p += 6;
610  s->off = strtoll(p, NULL, 10);
611  if ((slash = strchr(p, '/')) && strlen(slash) > 0)
612  s->filesize = strtoll(slash + 1, NULL, 10);
613  }
614  if (s->seekable == -1 && (!s->is_akamai || s->filesize != 2147483647))
615  h->is_streamed = 0; /* we _can_ in fact seek */
616 }
617 
618 static int parse_content_encoding(URLContext *h, const char *p)
619 {
620  if (!av_strncasecmp(p, "gzip", 4) ||
621  !av_strncasecmp(p, "deflate", 7)) {
622 #if CONFIG_ZLIB
623  HTTPContext *s = h->priv_data;
624 
625  s->compressed = 1;
626  inflateEnd(&s->inflate_stream);
627  if (inflateInit2(&s->inflate_stream, 32 + 15) != Z_OK) {
628  av_log(h, AV_LOG_WARNING, "Error during zlib initialisation: %s\n",
629  s->inflate_stream.msg);
630  return AVERROR(ENOSYS);
631  }
632  if (zlibCompileFlags() & (1 << 17)) {
634  "Your zlib was compiled without gzip support.\n");
635  return AVERROR(ENOSYS);
636  }
637 #else
639  "Compressed (%s) content, need zlib with gzip support\n", p);
640  return AVERROR(ENOSYS);
641 #endif /* CONFIG_ZLIB */
642  } else if (!av_strncasecmp(p, "identity", 8)) {
643  // The normal, no-encoding case (although servers shouldn't include
644  // the header at all if this is the case).
645  } else {
646  av_log(h, AV_LOG_WARNING, "Unknown content coding: %s\n", p);
647  }
648  return 0;
649 }
650 
651 // Concat all Icy- header lines
652 static int parse_icy(HTTPContext *s, const char *tag, const char *p)
653 {
654  int len = 4 + strlen(p) + strlen(tag);
655  int is_first = !s->icy_metadata_headers;
656  int ret;
657 
658  av_dict_set(&s->metadata, tag, p, 0);
659 
660  if (s->icy_metadata_headers)
661  len += strlen(s->icy_metadata_headers);
662 
663  if ((ret = av_reallocp(&s->icy_metadata_headers, len)) < 0)
664  return ret;
665 
666  if (is_first)
667  *s->icy_metadata_headers = '\0';
668 
669  av_strlcatf(s->icy_metadata_headers, len, "%s: %s\n", tag, p);
670 
671  return 0;
672 }
673 
674 static int parse_cookie(HTTPContext *s, const char *p, AVDictionary **cookies)
675 {
676  char *eql, *name;
677 
678  // duplicate the cookie name (dict will dupe the value)
679  if (!(eql = strchr(p, '='))) return AVERROR(EINVAL);
680  if (!(name = av_strndup(p, eql - p))) return AVERROR(ENOMEM);
681 
682  // add the cookie to the dictionary
683  av_dict_set(cookies, name, eql, AV_DICT_DONT_STRDUP_KEY);
684 
685  return 0;
686 }
687 
688 static int cookie_string(AVDictionary *dict, char **cookies)
689 {
690  AVDictionaryEntry *e = NULL;
691  int len = 1;
692 
693  // determine how much memory is needed for the cookies string
694  while (e = av_dict_get(dict, "", e, AV_DICT_IGNORE_SUFFIX))
695  len += strlen(e->key) + strlen(e->value) + 1;
696 
697  // reallocate the cookies
698  e = NULL;
699  if (*cookies) av_free(*cookies);
700  *cookies = av_malloc(len);
701  if (!*cookies) return AVERROR(ENOMEM);
702  *cookies[0] = '\0';
703 
704  // write out the cookies
705  while (e = av_dict_get(dict, "", e, AV_DICT_IGNORE_SUFFIX))
706  av_strlcatf(*cookies, len, "%s%s\n", e->key, e->value);
707 
708  return 0;
709 }
710 
711 static int process_line(URLContext *h, char *line, int line_count,
712  int *new_location)
713 {
714  HTTPContext *s = h->priv_data;
715  const char *auto_method = h->flags & AVIO_FLAG_READ ? "POST" : "GET";
716  char *tag, *p, *end, *method, *resource, *version;
717  int ret;
718 
719  /* end of header */
720  if (line[0] == '\0') {
721  s->end_header = 1;
722  return 0;
723  }
724 
725  p = line;
726  if (line_count == 0) {
727  if (s->is_connected_server) {
728  // HTTP method
729  method = p;
730  while (*p && !av_isspace(*p))
731  p++;
732  *(p++) = '\0';
733  av_log(h, AV_LOG_TRACE, "Received method: %s\n", method);
734  if (s->method) {
735  if (av_strcasecmp(s->method, method)) {
736  av_log(h, AV_LOG_ERROR, "Received and expected HTTP method do not match. (%s expected, %s received)\n",
737  s->method, method);
738  return ff_http_averror(400, AVERROR(EIO));
739  }
740  } else {
741  // use autodetected HTTP method to expect
742  av_log(h, AV_LOG_TRACE, "Autodetected %s HTTP method\n", auto_method);
743  if (av_strcasecmp(auto_method, method)) {
744  av_log(h, AV_LOG_ERROR, "Received and autodetected HTTP method did not match "
745  "(%s autodetected %s received)\n", auto_method, method);
746  return ff_http_averror(400, AVERROR(EIO));
747  }
748  if (!(s->method = av_strdup(method)))
749  return AVERROR(ENOMEM);
750  }
751 
752  // HTTP resource
753  while (av_isspace(*p))
754  p++;
755  resource = p;
756  while (!av_isspace(*p))
757  p++;
758  *(p++) = '\0';
759  av_log(h, AV_LOG_TRACE, "Requested resource: %s\n", resource);
760  if (!(s->resource = av_strdup(resource)))
761  return AVERROR(ENOMEM);
762 
763  // HTTP version
764  while (av_isspace(*p))
765  p++;
766  version = p;
767  while (*p && !av_isspace(*p))
768  p++;
769  *p = '\0';
770  if (av_strncasecmp(version, "HTTP/", 5)) {
771  av_log(h, AV_LOG_ERROR, "Malformed HTTP version string.\n");
772  return ff_http_averror(400, AVERROR(EIO));
773  }
774  av_log(h, AV_LOG_TRACE, "HTTP version string: %s\n", version);
775  } else {
776  while (!av_isspace(*p) && *p != '\0')
777  p++;
778  while (av_isspace(*p))
779  p++;
780  s->http_code = strtol(p, &end, 10);
781 
782  av_log(h, AV_LOG_TRACE, "http_code=%d\n", s->http_code);
783 
784  if ((ret = check_http_code(h, s->http_code, end)) < 0)
785  return ret;
786  }
787  } else {
788  while (*p != '\0' && *p != ':')
789  p++;
790  if (*p != ':')
791  return 1;
792 
793  *p = '\0';
794  tag = line;
795  p++;
796  while (av_isspace(*p))
797  p++;
798  if (!av_strcasecmp(tag, "Location")) {
799  if ((ret = parse_location(s, p)) < 0)
800  return ret;
801  *new_location = 1;
802  } else if (!av_strcasecmp(tag, "Content-Length") && s->filesize == -1) {
803  s->filesize = strtoll(p, NULL, 10);
804  } else if (!av_strcasecmp(tag, "Content-Range")) {
805  parse_content_range(h, p);
806  } else if (!av_strcasecmp(tag, "Accept-Ranges") &&
807  !strncmp(p, "bytes", 5) &&
808  s->seekable == -1) {
809  h->is_streamed = 0;
810  } else if (!av_strcasecmp(tag, "Transfer-Encoding") &&
811  !av_strncasecmp(p, "chunked", 7)) {
812  s->filesize = -1;
813  s->chunksize = 0;
814  } else if (!av_strcasecmp(tag, "WWW-Authenticate")) {
816  } else if (!av_strcasecmp(tag, "Authentication-Info")) {
818  } else if (!av_strcasecmp(tag, "Proxy-Authenticate")) {
820  } else if (!av_strcasecmp(tag, "Connection")) {
821  if (!strcmp(p, "close"))
822  s->willclose = 1;
823  } else if (!av_strcasecmp(tag, "Server")) {
824  if (!av_strcasecmp(p, "AkamaiGHost")) {
825  s->is_akamai = 1;
826  } else if (!av_strncasecmp(p, "MediaGateway", 12)) {
827  s->is_mediagateway = 1;
828  }
829  } else if (!av_strcasecmp(tag, "Content-Type")) {
830  av_free(s->mime_type);
831  s->mime_type = av_strdup(p);
832  } else if (!av_strcasecmp(tag, "Set-Cookie")) {
833  if (parse_cookie(s, p, &s->cookie_dict))
834  av_log(h, AV_LOG_WARNING, "Unable to parse '%s'\n", p);
835  } else if (!av_strcasecmp(tag, "Icy-MetaInt")) {
836  s->icy_metaint = strtoll(p, NULL, 10);
837  } else if (!av_strncasecmp(tag, "Icy-", 4)) {
838  if ((ret = parse_icy(s, tag, p)) < 0)
839  return ret;
840  } else if (!av_strcasecmp(tag, "Content-Encoding")) {
841  if ((ret = parse_content_encoding(h, p)) < 0)
842  return ret;
843  }
844  }
845  return 1;
846 }
847 
848 /**
849  * Create a string containing cookie values for use as a HTTP cookie header
850  * field value for a particular path and domain from the cookie values stored in
851  * the HTTP protocol context. The cookie string is stored in *cookies.
852  *
853  * @return a negative value if an error condition occurred, 0 otherwise
854  */
855 static int get_cookies(HTTPContext *s, char **cookies, const char *path,
856  const char *domain)
857 {
858  // cookie strings will look like Set-Cookie header field values. Multiple
859  // Set-Cookie fields will result in multiple values delimited by a newline
860  int ret = 0;
861  char *next, *cookie, *set_cookies = av_strdup(s->cookies), *cset_cookies = set_cookies;
862 
863  if (!set_cookies) return AVERROR(EINVAL);
864 
865  // destroy any cookies in the dictionary.
867 
868  *cookies = NULL;
869  while ((cookie = av_strtok(set_cookies, "\n", &next))) {
870  int domain_offset = 0;
871  char *param, *next_param, *cdomain = NULL, *cpath = NULL, *cvalue = NULL;
872  set_cookies = NULL;
873 
874  // store the cookie in a dict in case it is updated in the response
875  if (parse_cookie(s, cookie, &s->cookie_dict))
876  av_log(s, AV_LOG_WARNING, "Unable to parse '%s'\n", cookie);
877 
878  while ((param = av_strtok(cookie, "; ", &next_param))) {
879  if (cookie) {
880  // first key-value pair is the actual cookie value
881  cvalue = av_strdup(param);
882  cookie = NULL;
883  } else if (!av_strncasecmp("path=", param, 5)) {
884  av_free(cpath);
885  cpath = av_strdup(&param[5]);
886  } else if (!av_strncasecmp("domain=", param, 7)) {
887  // if the cookie specifies a sub-domain, skip the leading dot thereby
888  // supporting URLs that point to sub-domains and the master domain
889  int leading_dot = (param[7] == '.');
890  av_free(cdomain);
891  cdomain = av_strdup(&param[7+leading_dot]);
892  } else {
893  // ignore unknown attributes
894  }
895  }
896  if (!cdomain)
897  cdomain = av_strdup(domain);
898 
899  // ensure all of the necessary values are valid
900  if (!cdomain || !cpath || !cvalue) {
902  "Invalid cookie found, no value, path or domain specified\n");
903  goto done_cookie;
904  }
905 
906  // check if the request path matches the cookie path
907  if (av_strncasecmp(path, cpath, strlen(cpath)))
908  goto done_cookie;
909 
910  // the domain should be at least the size of our cookie domain
911  domain_offset = strlen(domain) - strlen(cdomain);
912  if (domain_offset < 0)
913  goto done_cookie;
914 
915  // match the cookie domain
916  if (av_strcasecmp(&domain[domain_offset], cdomain))
917  goto done_cookie;
918 
919  // cookie parameters match, so copy the value
920  if (!*cookies) {
921  if (!(*cookies = av_strdup(cvalue))) {
922  ret = AVERROR(ENOMEM);
923  goto done_cookie;
924  }
925  } else {
926  char *tmp = *cookies;
927  size_t str_size = strlen(cvalue) + strlen(*cookies) + 3;
928  if (!(*cookies = av_malloc(str_size))) {
929  ret = AVERROR(ENOMEM);
930  goto done_cookie;
931  }
932  snprintf(*cookies, str_size, "%s; %s", tmp, cvalue);
933  av_free(tmp);
934  }
935 
936  done_cookie:
937  av_freep(&cdomain);
938  av_freep(&cpath);
939  av_freep(&cvalue);
940  if (ret < 0) {
941  if (*cookies) av_freep(cookies);
942  av_free(cset_cookies);
943  return ret;
944  }
945  }
946 
947  av_free(cset_cookies);
948 
949  return 0;
950 }
951 
952 static inline int has_header(const char *str, const char *header)
953 {
954  /* header + 2 to skip over CRLF prefix. (make sure you have one!) */
955  if (!str)
956  return 0;
957  return av_stristart(str, header + 2, NULL) || av_stristr(str, header);
958 }
959 
960 static int http_read_header(URLContext *h, int *new_location)
961 {
962  HTTPContext *s = h->priv_data;
963  char line[MAX_URL_SIZE];
964  int err = 0;
965 
966  s->chunksize = -1;
967 
968  for (;;) {
969  if ((err = http_get_line(s, line, sizeof(line))) < 0)
970  return err;
971 
972  av_log(h, AV_LOG_TRACE, "header='%s'\n", line);
973 
974  err = process_line(h, line, s->line_count, new_location);
975  if (err < 0)
976  return err;
977  if (err == 0)
978  break;
979  s->line_count++;
980  }
981 
982  if (s->seekable == -1 && s->is_mediagateway && s->filesize == 2000000000)
983  h->is_streamed = 1; /* we can in fact _not_ seek */
984 
985  // add any new cookies into the existing cookie string
988 
989  return err;
990 }
991 
992 static int http_connect(URLContext *h, const char *path, const char *local_path,
993  const char *hoststr, const char *auth,
994  const char *proxyauth, int *new_location)
995 {
996  HTTPContext *s = h->priv_data;
997  int post, err;
998  char headers[HTTP_HEADERS_SIZE] = "";
999  char *authstr = NULL, *proxyauthstr = NULL;
1000  int64_t off = s->off;
1001  int len = 0;
1002  const char *method;
1003  int send_expect_100 = 0;
1004 
1005  /* send http header */
1006  post = h->flags & AVIO_FLAG_WRITE;
1007 
1008  if (s->post_data) {
1009  /* force POST method and disable chunked encoding when
1010  * custom HTTP post data is set */
1011  post = 1;
1012  s->chunked_post = 0;
1013  }
1014 
1015  if (s->method)
1016  method = s->method;
1017  else
1018  method = post ? "POST" : "GET";
1019 
1020  authstr = ff_http_auth_create_response(&s->auth_state, auth,
1021  local_path, method);
1022  proxyauthstr = ff_http_auth_create_response(&s->proxy_auth_state, proxyauth,
1023  local_path, method);
1024  if (post && !s->post_data) {
1025  send_expect_100 = s->send_expect_100;
1026  /* The user has supplied authentication but we don't know the auth type,
1027  * send Expect: 100-continue to get the 401 response including the
1028  * WWW-Authenticate header, or an 100 continue if no auth actually
1029  * is needed. */
1030  if (auth && *auth &&
1032  s->http_code != 401)
1033  send_expect_100 = 1;
1034  }
1035 
1036  /* set default headers if needed */
1037  if (!has_header(s->headers, "\r\nUser-Agent: "))
1038  len += av_strlcatf(headers + len, sizeof(headers) - len,
1039  "User-Agent: %s\r\n", s->user_agent);
1040  if (!has_header(s->headers, "\r\nAccept: "))
1041  len += av_strlcpy(headers + len, "Accept: */*\r\n",
1042  sizeof(headers) - len);
1043  // Note: we send this on purpose even when s->off is 0 when we're probing,
1044  // since it allows us to detect more reliably if a (non-conforming)
1045  // server supports seeking by analysing the reply headers.
1046  if (!has_header(s->headers, "\r\nRange: ") && !post && (s->off > 0 || s->end_off || s->seekable == -1)) {
1047  len += av_strlcatf(headers + len, sizeof(headers) - len,
1048  "Range: bytes=%"PRId64"-", s->off);
1049  if (s->end_off)
1050  len += av_strlcatf(headers + len, sizeof(headers) - len,
1051  "%"PRId64, s->end_off - 1);
1052  len += av_strlcpy(headers + len, "\r\n",
1053  sizeof(headers) - len);
1054  }
1055  if (send_expect_100 && !has_header(s->headers, "\r\nExpect: "))
1056  len += av_strlcatf(headers + len, sizeof(headers) - len,
1057  "Expect: 100-continue\r\n");
1058 
1059  if (!has_header(s->headers, "\r\nConnection: ")) {
1060  if (s->multiple_requests)
1061  len += av_strlcpy(headers + len, "Connection: keep-alive\r\n",
1062  sizeof(headers) - len);
1063  else
1064  len += av_strlcpy(headers + len, "Connection: close\r\n",
1065  sizeof(headers) - len);
1066  }
1067 
1068  if (!has_header(s->headers, "\r\nHost: "))
1069  len += av_strlcatf(headers + len, sizeof(headers) - len,
1070  "Host: %s\r\n", hoststr);
1071  if (!has_header(s->headers, "\r\nContent-Length: ") && s->post_data)
1072  len += av_strlcatf(headers + len, sizeof(headers) - len,
1073  "Content-Length: %d\r\n", s->post_datalen);
1074 
1075  if (!has_header(s->headers, "\r\nContent-Type: ") && s->content_type)
1076  len += av_strlcatf(headers + len, sizeof(headers) - len,
1077  "Content-Type: %s\r\n", s->content_type);
1078  if (!has_header(s->headers, "\r\nCookie: ") && s->cookies) {
1079  char *cookies = NULL;
1080  if (!get_cookies(s, &cookies, path, hoststr) && cookies) {
1081  len += av_strlcatf(headers + len, sizeof(headers) - len,
1082  "Cookie: %s\r\n", cookies);
1083  av_free(cookies);
1084  }
1085  }
1086  if (!has_header(s->headers, "\r\nIcy-MetaData: ") && s->icy)
1087  len += av_strlcatf(headers + len, sizeof(headers) - len,
1088  "Icy-MetaData: %d\r\n", 1);
1089 
1090  /* now add in custom headers */
1091  if (s->headers)
1092  av_strlcpy(headers + len, s->headers, sizeof(headers) - len);
1093 
1094  snprintf(s->buffer, sizeof(s->buffer),
1095  "%s %s HTTP/1.1\r\n"
1096  "%s"
1097  "%s"
1098  "%s"
1099  "%s%s"
1100  "\r\n",
1101  method,
1102  path,
1103  post && s->chunked_post ? "Transfer-Encoding: chunked\r\n" : "",
1104  headers,
1105  authstr ? authstr : "",
1106  proxyauthstr ? "Proxy-" : "", proxyauthstr ? proxyauthstr : "");
1107 
1108  av_log(h, AV_LOG_DEBUG, "request: %s\n", s->buffer);
1109 
1110  if ((err = ffurl_write(s->hd, s->buffer, strlen(s->buffer))) < 0)
1111  goto done;
1112 
1113  if (s->post_data)
1114  if ((err = ffurl_write(s->hd, s->post_data, s->post_datalen)) < 0)
1115  goto done;
1116 
1117  /* init input buffer */
1118  s->buf_ptr = s->buffer;
1119  s->buf_end = s->buffer;
1120  s->line_count = 0;
1121  s->off = 0;
1122  s->icy_data_read = 0;
1123  s->filesize = -1;
1124  s->willclose = 0;
1125  s->end_chunked_post = 0;
1126  s->end_header = 0;
1127  if (post && !s->post_data && !send_expect_100) {
1128  /* Pretend that it did work. We didn't read any header yet, since
1129  * we've still to send the POST data, but the code calling this
1130  * function will check http_code after we return. */
1131  s->http_code = 200;
1132  err = 0;
1133  goto done;
1134  }
1135 
1136  /* wait for header */
1137  err = http_read_header(h, new_location);
1138  if (err < 0)
1139  goto done;
1140 
1141  if (*new_location)
1142  s->off = off;
1143 
1144  err = (off == s->off) ? 0 : -1;
1145 done:
1146  av_freep(&authstr);
1147  av_freep(&proxyauthstr);
1148  return err;
1149 }
1150 
1152 {
1153  HTTPContext *s = h->priv_data;
1154  int len;
1155  /* read bytes from input buffer first */
1156  len = s->buf_end - s->buf_ptr;
1157  if (len > 0) {
1158  if (len > size)
1159  len = size;
1160  memcpy(buf, s->buf_ptr, len);
1161  s->buf_ptr += len;
1162  } else {
1163  int64_t target_end = s->end_off ? s->end_off : s->filesize;
1164  if ((!s->willclose || s->chunksize < 0) &&
1165  target_end >= 0 && s->off >= target_end)
1166  return AVERROR_EOF;
1167  len = ffurl_read(s->hd, buf, size);
1168  if (!len && (!s->willclose || s->chunksize < 0) &&
1169  target_end >= 0 && s->off < target_end) {
1170  av_log(h, AV_LOG_ERROR,
1171  "Stream ends prematurely at %"PRId64", should be %"PRId64"\n",
1172  s->off, target_end
1173  );
1174  return AVERROR(EIO);
1175  }
1176  }
1177  if (len > 0) {
1178  s->off += len;
1179  if (s->chunksize > 0)
1180  s->chunksize -= len;
1181  }
1182  return len;
1183 }
1184 
1185 #if CONFIG_ZLIB
1186 #define DECOMPRESS_BUF_SIZE (256 * 1024)
1187 static int http_buf_read_compressed(URLContext *h, uint8_t *buf, int size)
1188 {
1189  HTTPContext *s = h->priv_data;
1190  int ret;
1191 
1192  if (!s->inflate_buffer) {
1193  s->inflate_buffer = av_malloc(DECOMPRESS_BUF_SIZE);
1194  if (!s->inflate_buffer)
1195  return AVERROR(ENOMEM);
1196  }
1197 
1198  if (s->inflate_stream.avail_in == 0) {
1199  int read = http_buf_read(h, s->inflate_buffer, DECOMPRESS_BUF_SIZE);
1200  if (read <= 0)
1201  return read;
1202  s->inflate_stream.next_in = s->inflate_buffer;
1203  s->inflate_stream.avail_in = read;
1204  }
1205 
1206  s->inflate_stream.avail_out = size;
1207  s->inflate_stream.next_out = buf;
1208 
1209  ret = inflate(&s->inflate_stream, Z_SYNC_FLUSH);
1210  if (ret != Z_OK && ret != Z_STREAM_END)
1211  av_log(h, AV_LOG_WARNING, "inflate return value: %d, %s\n",
1212  ret, s->inflate_stream.msg);
1213 
1214  return size - s->inflate_stream.avail_out;
1215 }
1216 #endif /* CONFIG_ZLIB */
1217 
1218 static int64_t http_seek_internal(URLContext *h, int64_t off, int whence, int force_reconnect);
1219 
1220 static int http_read_stream(URLContext *h, uint8_t *buf, int size)
1221 {
1222  HTTPContext *s = h->priv_data;
1223  int err, new_location, read_ret;
1224  int64_t seek_ret;
1225 
1226  if (!s->hd)
1227  return AVERROR_EOF;
1228 
1229  if (s->end_chunked_post && !s->end_header) {
1230  err = http_read_header(h, &new_location);
1231  if (err < 0)
1232  return err;
1233  }
1234 
1235  if (s->chunksize >= 0) {
1236  if (!s->chunksize) {
1237  char line[32];
1238 
1239  do {
1240  if ((err = http_get_line(s, line, sizeof(line))) < 0)
1241  return err;
1242  } while (!*line); /* skip CR LF from last chunk */
1243 
1244  s->chunksize = strtoll(line, NULL, 16);
1245 
1246  av_log(NULL, AV_LOG_TRACE, "Chunked encoding data size: %"PRId64"'\n",
1247  s->chunksize);
1248 
1249  if (!s->chunksize)
1250  return 0;
1251  }
1252  size = FFMIN(size, s->chunksize);
1253  }
1254 #if CONFIG_ZLIB
1255  if (s->compressed)
1256  return http_buf_read_compressed(h, buf, size);
1257 #endif /* CONFIG_ZLIB */
1258  read_ret = http_buf_read(h, buf, size);
1259  if ( (read_ret < 0 && s->reconnect && (!h->is_streamed || s->reconnect_streamed) && s->filesize > 0 && s->off < s->filesize)
1260  || (read_ret == 0 && s->reconnect_at_eof && (!h->is_streamed || s->reconnect_streamed))) {
1261  int64_t target = h->is_streamed ? 0 : s->off;
1262 
1264  return AVERROR(EIO);
1265 
1266  av_log(h, AV_LOG_INFO, "Will reconnect at %"PRId64" error=%s.\n", s->off, av_err2str(read_ret));
1267  av_usleep(1000U*1000*s->reconnect_delay);
1268  s->reconnect_delay = 1 + 2*s->reconnect_delay;
1269  seek_ret = http_seek_internal(h, target, SEEK_SET, 1);
1270  if (seek_ret != target) {
1271  av_log(h, AV_LOG_ERROR, "Failed to reconnect at %"PRId64".\n", target);
1272  return read_ret;
1273  }
1274 
1275  read_ret = http_buf_read(h, buf, size);
1276  } else
1277  s->reconnect_delay = 0;
1278 
1279  return read_ret;
1280 }
1281 
1282 // Like http_read_stream(), but no short reads.
1283 // Assumes partial reads are an error.
1284 static int http_read_stream_all(URLContext *h, uint8_t *buf, int size)
1285 {
1286  int pos = 0;
1287  while (pos < size) {
1288  int len = http_read_stream(h, buf + pos, size - pos);
1289  if (len < 0)
1290  return len;
1291  pos += len;
1292  }
1293  return pos;
1294 }
1295 
1296 static void update_metadata(HTTPContext *s, char *data)
1297 {
1298  char *key;
1299  char *val;
1300  char *end;
1301  char *next = data;
1302 
1303  while (*next) {
1304  key = next;
1305  val = strstr(key, "='");
1306  if (!val)
1307  break;
1308  end = strstr(val, "';");
1309  if (!end)
1310  break;
1311 
1312  *val = '\0';
1313  *end = '\0';
1314  val += 2;
1315 
1316  av_dict_set(&s->metadata, key, val, 0);
1317 
1318  next = end + 2;
1319  }
1320 }
1321 
1322 static int store_icy(URLContext *h, int size)
1323 {
1324  HTTPContext *s = h->priv_data;
1325  /* until next metadata packet */
1326  int remaining = s->icy_metaint - s->icy_data_read;
1327 
1328  if (remaining < 0)
1329  return AVERROR_INVALIDDATA;
1330 
1331  if (!remaining) {
1332  /* The metadata packet is variable sized. It has a 1 byte header
1333  * which sets the length of the packet (divided by 16). If it's 0,
1334  * the metadata doesn't change. After the packet, icy_metaint bytes
1335  * of normal data follows. */
1336  uint8_t ch;
1337  int len = http_read_stream_all(h, &ch, 1);
1338  if (len < 0)
1339  return len;
1340  if (ch > 0) {
1341  char data[255 * 16 + 1];
1342  int ret;
1343  len = ch * 16;
1344  ret = http_read_stream_all(h, data, len);
1345  if (ret < 0)
1346  return ret;
1347  data[len + 1] = 0;
1348  if ((ret = av_opt_set(s, "icy_metadata_packet", data, 0)) < 0)
1349  return ret;
1350  update_metadata(s, data);
1351  }
1352  s->icy_data_read = 0;
1353  remaining = s->icy_metaint;
1354  }
1355 
1356  return FFMIN(size, remaining);
1357 }
1358 
1359 static int http_read(URLContext *h, uint8_t *buf, int size)
1360 {
1361  HTTPContext *s = h->priv_data;
1362 
1363  if (s->icy_metaint > 0) {
1364  size = store_icy(h, size);
1365  if (size < 0)
1366  return size;
1367  }
1368 
1369  size = http_read_stream(h, buf, size);
1370  if (size > 0)
1371  s->icy_data_read += size;
1372  return size;
1373 }
1374 
1375 /* used only when posting data */
1376 static int http_write(URLContext *h, const uint8_t *buf, int size)
1377 {
1378  char temp[11] = ""; /* 32-bit hex + CRLF + nul */
1379  int ret;
1380  char crlf[] = "\r\n";
1381  HTTPContext *s = h->priv_data;
1382 
1383  if (!s->chunked_post) {
1384  /* non-chunked data is sent without any special encoding */
1385  return ffurl_write(s->hd, buf, size);
1386  }
1387 
1388  /* silently ignore zero-size data since chunk encoding that would
1389  * signal EOF */
1390  if (size > 0) {
1391  /* upload data using chunked encoding */
1392  snprintf(temp, sizeof(temp), "%x\r\n", size);
1393 
1394  if ((ret = ffurl_write(s->hd, temp, strlen(temp))) < 0 ||
1395  (ret = ffurl_write(s->hd, buf, size)) < 0 ||
1396  (ret = ffurl_write(s->hd, crlf, sizeof(crlf) - 1)) < 0)
1397  return ret;
1398  }
1399  return size;
1400 }
1401 
1402 static int http_shutdown(URLContext *h, int flags)
1403 {
1404  int ret = 0;
1405  char footer[] = "0\r\n\r\n";
1406  HTTPContext *s = h->priv_data;
1407 
1408  /* signal end of chunked encoding if used */
1409  if (((flags & AVIO_FLAG_WRITE) && s->chunked_post) ||
1410  ((flags & AVIO_FLAG_READ) && s->chunked_post && s->listen)) {
1411  ret = ffurl_write(s->hd, footer, sizeof(footer) - 1);
1412  ret = ret > 0 ? 0 : ret;
1413  s->end_chunked_post = 1;
1414  }
1415 
1416  return ret;
1417 }
1418 
1419 static int http_close(URLContext *h)
1420 {
1421  int ret = 0;
1422  HTTPContext *s = h->priv_data;
1423 
1424 #if CONFIG_ZLIB
1425  inflateEnd(&s->inflate_stream);
1426  av_freep(&s->inflate_buffer);
1427 #endif /* CONFIG_ZLIB */
1428 
1429  if (!s->end_chunked_post)
1430  /* Close the write direction by sending the end of chunked encoding. */
1431  ret = http_shutdown(h, h->flags);
1432 
1433  if (s->hd)
1434  ffurl_closep(&s->hd);
1436  return ret;
1437 }
1438 
1439 static int64_t http_seek_internal(URLContext *h, int64_t off, int whence, int force_reconnect)
1440 {
1441  HTTPContext *s = h->priv_data;
1442  URLContext *old_hd = s->hd;
1443  int64_t old_off = s->off;
1444  uint8_t old_buf[BUFFER_SIZE];
1445  int old_buf_size, ret;
1446  AVDictionary *options = NULL;
1447 
1448  if (whence == AVSEEK_SIZE)
1449  return s->filesize;
1450  else if (!force_reconnect &&
1451  ((whence == SEEK_CUR && off == 0) ||
1452  (whence == SEEK_SET && off == s->off)))
1453  return s->off;
1454  else if ((s->filesize == -1 && whence == SEEK_END))
1455  return AVERROR(ENOSYS);
1456 
1457  if (whence == SEEK_CUR)
1458  off += s->off;
1459  else if (whence == SEEK_END)
1460  off += s->filesize;
1461  else if (whence != SEEK_SET)
1462  return AVERROR(EINVAL);
1463  if (off < 0)
1464  return AVERROR(EINVAL);
1465  s->off = off;
1466 
1467  if (s->off && h->is_streamed)
1468  return AVERROR(ENOSYS);
1469 
1470  /* we save the old context in case the seek fails */
1471  old_buf_size = s->buf_end - s->buf_ptr;
1472  memcpy(old_buf, s->buf_ptr, old_buf_size);
1473  s->hd = NULL;
1474 
1475  /* if it fails, continue on old connection */
1476  if ((ret = http_open_cnx(h, &options)) < 0) {
1477  av_dict_free(&options);
1478  memcpy(s->buffer, old_buf, old_buf_size);
1479  s->buf_ptr = s->buffer;
1480  s->buf_end = s->buffer + old_buf_size;
1481  s->hd = old_hd;
1482  s->off = old_off;
1483  return ret;
1484  }
1485  av_dict_free(&options);
1486  ffurl_close(old_hd);
1487  return off;
1488 }
1489 
1490 static int64_t http_seek(URLContext *h, int64_t off, int whence)
1491 {
1492  return http_seek_internal(h, off, whence, 0);
1493 }
1494 
1496 {
1497  HTTPContext *s = h->priv_data;
1498  return ffurl_get_file_handle(s->hd);
1499 }
1500 
1501 #define HTTP_CLASS(flavor) \
1502 static const AVClass flavor ## _context_class = { \
1503  .class_name = # flavor, \
1504  .item_name = av_default_item_name, \
1505  .option = options, \
1506  .version = LIBAVUTIL_VERSION_INT, \
1507 }
1508 
1509 #if CONFIG_HTTP_PROTOCOL
1510 HTTP_CLASS(http);
1511 
1512 const URLProtocol ff_http_protocol = {
1513  .name = "http",
1514  .url_open2 = http_open,
1515  .url_accept = http_accept,
1516  .url_handshake = http_handshake,
1517  .url_read = http_read,
1518  .url_write = http_write,
1519  .url_seek = http_seek,
1520  .url_close = http_close,
1521  .url_get_file_handle = http_get_file_handle,
1522  .url_shutdown = http_shutdown,
1523  .priv_data_size = sizeof(HTTPContext),
1524  .priv_data_class = &http_context_class,
1526  .default_whitelist = "http,https,tls,rtp,tcp,udp,crypto,httpproxy"
1527 };
1528 #endif /* CONFIG_HTTP_PROTOCOL */
1529 
1530 #if CONFIG_HTTPS_PROTOCOL
1531 HTTP_CLASS(https);
1532 
1534  .name = "https",
1535  .url_open2 = http_open,
1536  .url_read = http_read,
1537  .url_write = http_write,
1538  .url_seek = http_seek,
1539  .url_close = http_close,
1540  .url_get_file_handle = http_get_file_handle,
1541  .url_shutdown = http_shutdown,
1542  .priv_data_size = sizeof(HTTPContext),
1543  .priv_data_class = &https_context_class,
1545  .default_whitelist = "http,https,tls,rtp,tcp,udp,crypto,httpproxy"
1546 };
1547 #endif /* CONFIG_HTTPS_PROTOCOL */
1548 
1549 #if CONFIG_HTTPPROXY_PROTOCOL
1550 static int http_proxy_close(URLContext *h)
1551 {
1552  HTTPContext *s = h->priv_data;
1553  if (s->hd)
1554  ffurl_closep(&s->hd);
1555  return 0;
1556 }
1557 
1558 static int http_proxy_open(URLContext *h, const char *uri, int flags)
1559 {
1560  HTTPContext *s = h->priv_data;
1561  char hostname[1024], hoststr[1024];
1562  char auth[1024], pathbuf[1024], *path;
1563  char lower_url[100];
1564  int port, ret = 0, attempts = 0;
1565  HTTPAuthType cur_auth_type;
1566  char *authstr;
1567  int new_loc;
1568 
1569  if( s->seekable == 1 )
1570  h->is_streamed = 0;
1571  else
1572  h->is_streamed = 1;
1573 
1574  av_url_split(NULL, 0, auth, sizeof(auth), hostname, sizeof(hostname), &port,
1575  pathbuf, sizeof(pathbuf), uri);
1576  ff_url_join(hoststr, sizeof(hoststr), NULL, NULL, hostname, port, NULL);
1577  path = pathbuf;
1578  if (*path == '/')
1579  path++;
1580 
1581  ff_url_join(lower_url, sizeof(lower_url), "tcp", NULL, hostname, port,
1582  NULL);
1583 redo:
1584  ret = ffurl_open_whitelist(&s->hd, lower_url, AVIO_FLAG_READ_WRITE,
1585  &h->interrupt_callback, NULL,
1587  if (ret < 0)
1588  return ret;
1589 
1590  authstr = ff_http_auth_create_response(&s->proxy_auth_state, auth,
1591  path, "CONNECT");
1592  snprintf(s->buffer, sizeof(s->buffer),
1593  "CONNECT %s HTTP/1.1\r\n"
1594  "Host: %s\r\n"
1595  "Connection: close\r\n"
1596  "%s%s"
1597  "\r\n",
1598  path,
1599  hoststr,
1600  authstr ? "Proxy-" : "", authstr ? authstr : "");
1601  av_freep(&authstr);
1602 
1603  if ((ret = ffurl_write(s->hd, s->buffer, strlen(s->buffer))) < 0)
1604  goto fail;
1605 
1606  s->buf_ptr = s->buffer;
1607  s->buf_end = s->buffer;
1608  s->line_count = 0;
1609  s->filesize = -1;
1610  cur_auth_type = s->proxy_auth_state.auth_type;
1611 
1612  /* Note: This uses buffering, potentially reading more than the
1613  * HTTP header. If tunneling a protocol where the server starts
1614  * the conversation, we might buffer part of that here, too.
1615  * Reading that requires using the proper ffurl_read() function
1616  * on this URLContext, not using the fd directly (as the tls
1617  * protocol does). This shouldn't be an issue for tls though,
1618  * since the client starts the conversation there, so there
1619  * is no extra data that we might buffer up here.
1620  */
1621  ret = http_read_header(h, &new_loc);
1622  if (ret < 0)
1623  goto fail;
1624 
1625  attempts++;
1626  if (s->http_code == 407 &&
1627  (cur_auth_type == HTTP_AUTH_NONE || s->proxy_auth_state.stale) &&
1628  s->proxy_auth_state.auth_type != HTTP_AUTH_NONE && attempts < 2) {
1629  ffurl_closep(&s->hd);
1630  goto redo;
1631  }
1632 
1633  if (s->http_code < 400)
1634  return 0;
1635  ret = ff_http_averror(s->http_code, AVERROR(EIO));
1636 
1637 fail:
1638  http_proxy_close(h);
1639  return ret;
1640 }
1641 
1642 static int http_proxy_write(URLContext *h, const uint8_t *buf, int size)
1643 {
1644  HTTPContext *s = h->priv_data;
1645  return ffurl_write(s->hd, buf, size);
1646 }
1647 
1649  .name = "httpproxy",
1650  .url_open = http_proxy_open,
1651  .url_read = http_buf_read,
1652  .url_write = http_proxy_write,
1653  .url_close = http_proxy_close,
1654  .url_get_file_handle = http_get_file_handle,
1655  .priv_data_size = sizeof(HTTPContext),
1656  .flags = URL_PROTOCOL_FLAG_NETWORK,
1657 };
1658 #endif /* CONFIG_HTTPPROXY_PROTOCOL */
static int http_get_line(HTTPContext *s, char *line, int line_size)
Definition: http.c:550
void av_url_split(char *proto, int proto_size, char *authorization, int authorization_size, char *hostname, int hostname_size, int *port_ptr, char *path, int path_size, const char *url)
Split a URL string into components.
Definition: utils.c:4303
static void parse_content_range(URLContext *h, const char *p)
Definition: http.c:603
AVDictionary * metadata
Definition: http.c:100
#define NULL
Definition: coverity.c:32
static int http_connect(URLContext *h, const char *path, const char *local_path, const char *hoststr, const char *auth, const char *proxyauth, int *new_location)
Definition: http.c:992
const char const char void * val
Definition: avisynth_c.h:634
void ff_make_absolute_url(char *buf, int size, const char *base, const char *rel)
Convert a relative url into an absolute url, given a base url.
Definition: url.c:80
const char * s
Definition: avisynth_c.h:631
#define AVERROR_INVALIDDATA
Invalid data found when processing input.
Definition: error.h:59
int icy_data_read
Definition: http.c:95
int ffurl_open_whitelist(URLContext **puc, const char *filename, int flags, const AVIOInterruptCB *int_cb, AVDictionary **options, const char *whitelist, const char *blacklist, URLContext *parent)
Create an URLContext for accessing to the resource indicated by url, and open it. ...
Definition: avio.c:309
#define URL_PROTOCOL_FLAG_NETWORK
Definition: url.h:34
uint8_t * post_data
Definition: http.c:86
int reconnect_delay
Definition: http.c:112
AVOption.
Definition: opt.h:245
ptrdiff_t const GLvoid * data
Definition: opengl_enc.c:101
#define AV_OPT_FLAG_EXPORT
The option is intended for exporting values to the caller.
Definition: opt.h:286
HTTPAuthType
Authentication types, ordered from weakest to strongest.
Definition: httpauth.h:28
#define BUFFER_SIZE
Definition: http.c:47
#define AV_LOG_WARNING
Something somehow does not look correct.
Definition: log.h:182
static int http_close(URLContext *h)
Definition: http.c:1419
else temp
Definition: vf_mcdeint.c:259
int ffurl_write(URLContext *h, const unsigned char *buf, int size)
Write size bytes from buf to the resource accessed by h.
Definition: avio.c:421
char * av_stristr(const char *s1, const char *s2)
Locate the first case-independent occurrence in the string haystack of the string needle...
Definition: avstring.c:56
int is_streamed
true if streamed (no seek possible), default = false
Definition: url.h:45
AVIOInterruptCB interrupt_callback
Definition: url.h:47
HTTPAuthState proxy_auth_state
Definition: http.c:69
Definition: http.c:55
#define AVIO_FLAG_READ
read-only
Definition: avio.h:606
char * icy_metadata_headers
Definition: http.c:98
static av_const int av_isspace(int c)
Locale-independent conversion of ASCII isspace.
Definition: avstring.h:222
const URLProtocol ff_http_protocol
#define AVIO_FLAG_WRITE
write-only
Definition: avio.h:607
int av_strncasecmp(const char *a, const char *b, size_t n)
Locale-independent case-insensitive compare.
Definition: avstring.c:223
#define AVERROR_HTTP_NOT_FOUND
Definition: error.h:79
int av_dict_copy(AVDictionary **dst, const AVDictionary *src, int flags)
Copy entries from one AVDictionary struct into another.
Definition: dict.c:216
int flags
Definition: url.h:43
static int http_listen(URLContext *h, const char *uri, int flags, AVDictionary **options)
Definition: http.c:441
char * content_type
Definition: http.c:74
int version
Definition: avisynth_c.h:629
int av_usleep(unsigned usec)
Sleep for a period of time.
Definition: time.c:76
static int http_getc(HTTPContext *s)
Definition: http.c:533
HTTP Authentication state structure.
Definition: httpauth.h:55
int auth_type
The currently chosen auth type.
Definition: httpauth.h:59
int is_connected_server
Definition: http.c:119
#define AV_DICT_DONT_STRDUP_KEY
Take ownership of a key that's been allocated with av_malloc() or another memory allocation function...
Definition: dict.h:73
#define HTTP_SINGLE
Definition: http.c:49
#define MAX_URL_SIZE
Definition: internal.h:30
static int parse_cookie(HTTPContext *s, const char *p, AVDictionary **cookies)
Definition: http.c:674
#define av_assert0(cond)
assert() equivalent, that is always enabled.
Definition: avassert.h:37
int end_chunked_post
Definition: http.c:81
int av_stristart(const char *str, const char *pfx, const char **ptr)
Return non-zero if pfx is a prefix of str independent of case.
Definition: avstring.c:45
static int http_get_file_handle(URLContext *h)
Definition: http.c:1495
static int http_buf_read(URLContext *h, uint8_t *buf, int size)
Definition: http.c:1151
uint8_t
#define av_malloc(s)
int post_datalen
Definition: http.c:87
AVOptions.
int ff_http_averror(int status_code, int default_averror)
Definition: http.c:312
miscellaneous OS support macros and functions.
#define AV_LOG_TRACE
Extremely verbose debugging, useful for libav* development.
Definition: log.h:202
static int http_read_header(URLContext *h, int *new_location)
Definition: http.c:960
static av_cold int end(AVCodecContext *avctx)
Definition: avrndec.c:90
#define HTTP_HEADERS_SIZE
Definition: http.h:27
int is_akamai
Definition: http.c:88
static int http_open_cnx(URLContext *h, AVDictionary **options)
Definition: http.c:238
AVDictionaryEntry * av_dict_get(const AVDictionary *m, const char *key, const AVDictionaryEntry *prev, int flags)
Get a dictionary entry with matching key.
Definition: dict.c:39
static void inflate(uint8_t *dst, const uint8_t *p1, int width, int threshold, const uint8_t *coordinates[], int coord)
Definition: vf_neighbor.c:129
uint32_t tag
Definition: movenc.c:1367
#define DEFAULT_USER_AGENT
Definition: http.c:125
char * av_strndup(const char *s, size_t len)
Duplicate a substring of the string s.
Definition: mem.c:279
#define AVERROR_EOF
End of file.
Definition: error.h:55
void ff_http_init_auth_state(URLContext *dest, const URLContext *src)
Initialize the authentication state based on another HTTP URLContext.
Definition: http.c:166
HTTP 1.0 Basic auth from RFC 1945 (also in RFC 2617)
Definition: httpauth.h:30
ptrdiff_t size
Definition: opengl_enc.c:101
static const uint8_t header[24]
Definition: sdr2.c:67
static int http_open_cnx_internal(URLContext *h, AVDictionary **options)
Definition: http.c:176
int line_count
Definition: http.c:62
#define av_log(a,...)
unsigned char * buf_end
Definition: http.c:61
static void update_metadata(HTTPContext *s, char *data)
Definition: http.c:1296
#define U(x)
Definition: vp56_arith.h:37
int is_multi_client
Definition: http.c:117
int chunked_post
Definition: http.c:79
static int64_t http_seek_internal(URLContext *h, int64_t off, int whence, int force_reconnect)
Definition: http.c:1439
int ffurl_alloc(URLContext **puc, const char *filename, int flags, const AVIOInterruptCB *int_cb)
Create a URLContext for accessing to the resource indicated by url, but do not initiate the connectio...
Definition: avio.c:292
#define AV_LOG_ERROR
Something went wrong and cannot losslessly be recovered.
Definition: log.h:176
int reconnect_delay_max
Definition: http.c:113
#define E
Definition: http.c:124
const char * protocol_whitelist
Definition: url.h:49
#define AVERROR(e)
Definition: error.h:43
static int http_write(URLContext *h, const uint8_t *buf, int size)
Definition: http.c:1376
static const AVOption options[]
Definition: http.c:127
#define AV_LOG_DEBUG
Stuff which is only useful for libav* developers.
Definition: log.h:197
void av_dict_free(AVDictionary **pm)
Free all the memory allocated for an AVDictionary struct and all keys and values. ...
Definition: dict.c:202
static int http_handshake(URLContext *c)
Definition: http.c:405
Definition: graph2dot.c:48
simple assert() macros that are a bit more flexible than ISO C assert().
#define OFFSET(x)
Definition: http.c:122
static void body(uint32_t ABCD[4], uint32_t *src, int nblocks)
Definition: md5.c:101
size_t av_strlcpy(char *dst, const char *src, size_t size)
Copy the string src to dst, but no more than size - 1 bytes, and null-terminate dst.
Definition: avstring.c:83
#define fail()
Definition: checkasm.h:81
AVDictionary * chained_options
Definition: http.c:106
#define AVERROR_HTTP_SERVER_ERROR
Definition: error.h:81
static int store_icy(URLContext *h, int size)
Definition: http.c:1322
char * headers
Definition: http.c:71
char * user_agent
Definition: http.c:73
#define AVERROR_HTTP_UNAUTHORIZED
Definition: error.h:77
char * icy_metadata_packet
Definition: http.c:99
char method[16]
Definition: ffserver.c:170
#define FFMIN(a, b)
Definition: common.h:96
const URLProtocol ff_httpproxy_protocol
int64_t off
Definition: http.c:66
int av_strcasecmp(const char *a, const char *b)
Locale-independent case-insensitive compare.
Definition: avstring.c:213
int64_t end_off
Definition: http.c:66
int send_expect_100
Definition: http.c:107
#define av_err2str(errnum)
Convenience macro, the return value should be used only directly in function arguments but never stan...
Definition: error.h:119
int willclose
Definition: http.c:77
int is_mediagateway
Definition: http.c:89
int ffurl_handshake(URLContext *c)
Perform one step of the protocol handshake to accept a new client.
Definition: avio.c:234
int reconnect
Definition: http.c:109
int ff_http_match_no_proxy(const char *no_proxy, const char *hostname)
Definition: network.c:307
#define src
Definition: vp9dsp.c:530
int ffurl_get_file_handle(URLContext *h)
Return the file descriptor associated with this URL.
Definition: avio.c:626
int ffurl_accept(URLContext *s, URLContext **c)
Accept an URLContext c on an URLContext s.
Definition: avio.c:226
AVDictionary * cookie_dict
Definition: http.c:92
int stale
Auth ok, but needs to be resent with a new nonce.
Definition: httpauth.h:71
offset must point to a pointer immediately followed by an int for the length
Definition: opt.h:229
int ffurl_closep(URLContext **hh)
Close the resource accessed by the URLContext h, and free the memory used by it.
Definition: avio.c:444
int ff_url_join(char *str, int size, const char *proto, const char *authorization, const char *hostname, int port, const char *fmt,...)
Definition: url.c:36
int reconnect_streamed
Definition: http.c:111
static int http_read(URLContext *h, uint8_t *buf, int size)
Definition: http.c:1359
#define AV_LOG_INFO
Standard information.
Definition: log.h:187
const char * protocol_blacklist
Definition: url.h:50
char * http_proxy
Definition: http.c:70
char * av_strdup(const char *s)
Duplicate the string s.
Definition: mem.c:267
HandshakeState handshake_step
Definition: http.c:118
int seekable
Control seekability, 0 = disable, 1 = enable, -1 = probe.
Definition: http.c:78
void * buf
Definition: avisynth_c.h:553
Definition: url.h:38
#define AVIO_FLAG_READ_WRITE
read-write pseudo flag
Definition: avio.h:608
int av_dict_set(AVDictionary **pm, const char *key, const char *value, int flags)
Set the given entry in *pm, overwriting an existing entry.
Definition: dict.c:69
Describe the class of an AVClass context structure.
Definition: log.h:67
#define SPACE_CHARS
Definition: internal.h:271
void * priv_data
Definition: url.h:41
#define AVERROR_HTTP_OTHER_4XX
Definition: error.h:80
size_t av_strlcatf(char *dst, size_t size, const char *fmt,...)
Definition: avstring.c:101
#define snprintf
Definition: snprintf.h:34
int icy
Definition: http.c:93
char * ff_http_auth_create_response(HTTPAuthState *state, const char *auth, const char *path, const char *method)
Definition: httpauth.c:245
const char * name
Definition: url.h:54
URLContext * hd
Definition: http.c:60
static int has_header(const char *str, const char *header)
Definition: http.c:952
char * mime_type
Definition: http.c:72
#define SIZE_SPECIFIER
Definition: internal.h:252
#define AVERROR_HTTP_FORBIDDEN
Definition: error.h:78
static int flags
Definition: cpu.c:47
int ffurl_close(URLContext *h)
Definition: avio.c:467
static int process_line(URLContext *h, char *line, int line_count, int *new_location)
Definition: http.c:711
int ff_http_do_new_request(URLContext *h, const char *uri)
Send a new HTTP request, reusing the old connection.
Definition: http.c:294
char * av_strtok(char *s, const char *delim, char **saveptr)
Split the string into several tokens which can be accessed by successive calls to av_strtok()...
Definition: avstring.c:184
int av_strstart(const char *str, const char *pfx, const char **ptr)
Return non-zero if pfx is a prefix of str.
Definition: avstring.c:34
Main libavformat public API header.
char * cookies
holds newline ( ) delimited Set-Cookie header field values (without the "Set-Cookie: " field name) ...
Definition: http.c:90
#define MAX_REDIRECTS
Definition: http.c:48
static int parse_content_encoding(URLContext *h, const char *p)
Definition: http.c:618
int reconnect_at_eof
Definition: http.c:110
static double c[64]
int av_dict_set_int(AVDictionary **pm, const char *key, int64_t value, int flags)
Convenience wrapper for av_dict_set that converts the value to a string and stores it...
Definition: dict.c:146
int av_reallocp(void *ptr, size_t size)
Allocate or reallocate a block of memory.
Definition: mem.c:187
HandshakeState
Definition: http.c:51
static int get_cookies(HTTPContext *s, char **cookies, const char *path, const char *domain)
Create a string containing cookie values for use as a HTTP cookie header field value for a particular...
Definition: http.c:855
int http_code
Definition: http.c:63
char * filename
specified URL
Definition: url.h:42
int listen
Definition: http.c:114
static int http_open(URLContext *h, const char *uri, int flags, AVDictionary **options)
Definition: http.c:472
#define AVSEEK_SIZE
ORing this as the "whence" parameter to a seek function causes it to return the filesize without seek...
Definition: avio.h:485
char * key
Definition: dict.h:86
void ff_http_auth_handle_header(HTTPAuthState *state, const char *key, const char *value)
Definition: httpauth.c:90
int multiple_requests
Definition: http.c:85
HTTPAuthState auth_state
Definition: http.c:68
#define av_free(p)
static int cookie_string(AVDictionary *dict, char **cookies)
Definition: http.c:688
char * value
Definition: dict.h:87
const URLProtocol ff_https_protocol
int len
static int parse_location(HTTPContext *s, const char *p)
Definition: http.c:589
uint8_t * buffer
Definition: ffserver.c:173
int64_t filesize
Definition: http.c:66
char * resource
Definition: http.c:115
char * location
Definition: http.c:67
static uint8_t tmp[8]
Definition: des.c:38
static int http_shutdown(URLContext *h, int flags)
Definition: http.c:1402
int icy_metaint
Definition: http.c:97
static int http_write_reply(URLContext *h, int status_code)
Definition: http.c:329
#define AV_OPT_FLAG_READONLY
The option may not be set through the AVOptions API, only read.
Definition: opt.h:291
int end_header
Definition: http.c:83
unsigned char * buf_ptr
Definition: http.c:61
#define D
Definition: http.c:123
#define AVERROR_HTTP_BAD_REQUEST
Definition: error.h:76
char * method
Definition: http.c:108
static int parse_icy(HTTPContext *s, const char *tag, const char *p)
Definition: http.c:652
static int http_read_stream(URLContext *h, uint8_t *buf, int size)
Definition: http.c:1220
#define av_freep(p)
static int http_read_stream_all(URLContext *h, uint8_t *buf, int size)
Definition: http.c:1284
#define AV_DICT_IGNORE_SUFFIX
Return first entry in a dictionary whose first part corresponds to the search key, ignoring the suffix of the found key string.
Definition: dict.h:70
unbuffered private I/O API
static void handle_http_errors(URLContext *h, int error)
Definition: http.c:399
static int64_t http_seek(URLContext *h, int64_t off, int whence)
Definition: http.c:1490
int reply_code
Definition: http.c:116
int av_opt_set(void *obj, const char *name, const char *val, int search_flags)
Definition: opt.c:431
int ffurl_read(URLContext *h, unsigned char *buf, int size)
Read up to size bytes from the resource accessed by h, and store the read bytes in buf...
Definition: avio.c:407
static int http_accept(URLContext *s, URLContext **c)
Definition: http.c:513
int64_t chunksize
Definition: http.c:65
GLuint buffer
Definition: opengl_enc.c:102
#define HTTP_CLASS(flavor)
Definition: http.c:1501
No authentication specified.
Definition: httpauth.h:29
static int check_http_code(URLContext *h, int http_code, const char *end)
Definition: http.c:574
const char * name
Definition: opengl_enc.c:103