FFmpeg  4.3.9
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/bprint.h"
31 #include "libavutil/opt.h"
32 #include "libavutil/time.h"
33 #include "libavutil/parseutils.h"
34 
35 #include "avformat.h"
36 #include "http.h"
37 #include "httpauth.h"
38 #include "internal.h"
39 #include "network.h"
40 #include "os_support.h"
41 #include "url.h"
42 
43 /* XXX: POST protocol is not completely implemented because ffmpeg uses
44  * only a subset of it. */
45 
46 /* The IO buffer size is unrelated to the max URL size in itself, but needs
47  * to be large enough to fit the full request headers (including long
48  * path names). */
49 #define BUFFER_SIZE (MAX_URL_SIZE + HTTP_HEADERS_SIZE)
50 #define MAX_REDIRECTS 8
51 #define HTTP_SINGLE 1
52 #define HTTP_MUTLI 2
53 #define MAX_EXPIRY 19
54 #define WHITESPACES " \n\t\r"
55 typedef enum {
61 
62 typedef struct HTTPContext {
63  const AVClass *class;
65  unsigned char buffer[BUFFER_SIZE], *buf_ptr, *buf_end;
67  int http_code;
68  /* Used if "Transfer-Encoding: chunked" otherwise -1. */
69  uint64_t chunksize;
70  int chunkend;
71  uint64_t off, end_off, filesize;
72  char *location;
75  char *http_proxy;
76  char *headers;
77  char *mime_type;
78  char *http_version;
79  char *user_agent;
80  char *referer;
81 #if FF_API_HTTP_USER_AGENT
82  char *user_agent_deprecated;
83 #endif
84  char *content_type;
85  /* Set if the server correctly handles Connection: close and will close
86  * the connection after feeding us the content. */
87  int willclose;
88  int seekable; /**< Control seekability, 0 = disable, 1 = enable, -1 = probe. */
90  /* A flag which indicates if the end of chunked encoding has been sent. */
92  /* A flag which indicates we have finished to read POST reply. */
94  /* A flag which indicates if we use persistent connections. */
98  int is_akamai;
100  char *cookies; ///< holds newline (\n) delimited Set-Cookie header field values (without the "Set-Cookie: " field name)
101  /* A dictionary containing cookies keyed by cookie name */
103  int icy;
104  /* how much data was read since the last ICY metadata packet */
105  uint64_t icy_data_read;
106  /* after how many bytes of read data a new metadata packet will be found */
107  uint64_t icy_metaint;
111 #if CONFIG_ZLIB
112  int compressed;
113  z_stream inflate_stream;
114  uint8_t *inflate_buffer;
115 #endif /* CONFIG_ZLIB */
117  /* -1 = try to send if applicable, 0 = always disabled, 1 = always enabled */
119  char *method;
124  int listen;
125  char *resource;
130 } HTTPContext;
131 
132 #define OFFSET(x) offsetof(HTTPContext, x)
133 #define D AV_OPT_FLAG_DECODING_PARAM
134 #define E AV_OPT_FLAG_ENCODING_PARAM
135 #define DEFAULT_USER_AGENT "Lavf/" AV_STRINGIFY(LIBAVFORMAT_VERSION)
136 
137 static const AVOption options[] = {
138  { "seekable", "control seekability of connection", OFFSET(seekable), AV_OPT_TYPE_BOOL, { .i64 = -1 }, -1, 1, D },
139  { "chunked_post", "use chunked transfer-encoding for posts", OFFSET(chunked_post), AV_OPT_TYPE_BOOL, { .i64 = 1 }, 0, 1, E },
140  { "http_proxy", "set HTTP proxy to tunnel through", OFFSET(http_proxy), AV_OPT_TYPE_STRING, { .str = NULL }, 0, 0, D | E },
141  { "headers", "set custom HTTP headers, can override built in default headers", OFFSET(headers), AV_OPT_TYPE_STRING, { .str = NULL }, 0, 0, D | E },
142  { "content_type", "set a specific content type for the POST messages", OFFSET(content_type), AV_OPT_TYPE_STRING, { .str = NULL }, 0, 0, D | E },
143  { "user_agent", "override User-Agent header", OFFSET(user_agent), AV_OPT_TYPE_STRING, { .str = DEFAULT_USER_AGENT }, 0, 0, D },
144  { "referer", "override referer header", OFFSET(referer), AV_OPT_TYPE_STRING, { .str = NULL }, 0, 0, D },
145 #if FF_API_HTTP_USER_AGENT
146  { "user-agent", "use the \"user_agent\" option instead", OFFSET(user_agent_deprecated), AV_OPT_TYPE_STRING, { .str = DEFAULT_USER_AGENT }, 0, 0, D|AV_OPT_FLAG_DEPRECATED },
147 #endif
148  { "multiple_requests", "use persistent connections", OFFSET(multiple_requests), AV_OPT_TYPE_BOOL, { .i64 = 0 }, 0, 1, D | E },
149  { "post_data", "set custom HTTP post data", OFFSET(post_data), AV_OPT_TYPE_BINARY, .flags = D | E },
150  { "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 },
151  { "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 },
152  { "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 },
153  { "icy", "request ICY metadata", OFFSET(icy), AV_OPT_TYPE_BOOL, { .i64 = 1 }, 0, 1, D },
154  { "icy_metadata_headers", "return ICY metadata headers", OFFSET(icy_metadata_headers), AV_OPT_TYPE_STRING, { .str = NULL }, 0, 0, AV_OPT_FLAG_EXPORT },
155  { "icy_metadata_packet", "return current ICY metadata packet", OFFSET(icy_metadata_packet), AV_OPT_TYPE_STRING, { .str = NULL }, 0, 0, AV_OPT_FLAG_EXPORT },
156  { "metadata", "metadata read from the bitstream", OFFSET(metadata), AV_OPT_TYPE_DICT, {0}, 0, 0, AV_OPT_FLAG_EXPORT },
157  { "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"},
158  { "none", "No auth method set, autodetect", 0, AV_OPT_TYPE_CONST, { .i64 = HTTP_AUTH_NONE }, 0, 0, D | E, "auth_type"},
159  { "basic", "HTTP basic authentication", 0, AV_OPT_TYPE_CONST, { .i64 = HTTP_AUTH_BASIC }, 0, 0, D | E, "auth_type"},
160  { "send_expect_100", "Force sending an Expect: 100-continue header for POST", OFFSET(send_expect_100), AV_OPT_TYPE_BOOL, { .i64 = -1 }, -1, 1, E },
161  { "location", "The actual location of the data received", OFFSET(location), AV_OPT_TYPE_STRING, { .str = NULL }, 0, 0, D | E },
162  { "offset", "initial byte offset", OFFSET(off), AV_OPT_TYPE_INT64, { .i64 = 0 }, 0, INT64_MAX, D },
163  { "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 },
164  { "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 },
165  { "reconnect", "auto reconnect after disconnect before EOF", OFFSET(reconnect), AV_OPT_TYPE_BOOL, { .i64 = 0 }, 0, 1, D },
166  { "reconnect_at_eof", "auto reconnect at EOF", OFFSET(reconnect_at_eof), AV_OPT_TYPE_BOOL, { .i64 = 0 }, 0, 1, D },
167  { "reconnect_streamed", "auto reconnect streamed / non seekable streams", OFFSET(reconnect_streamed), AV_OPT_TYPE_BOOL, { .i64 = 0 }, 0, 1, D },
168  { "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 },
169  { "listen", "listen on HTTP", OFFSET(listen), AV_OPT_TYPE_INT, { .i64 = 0 }, 0, 2, D | E },
170  { "resource", "The resource requested by a client", OFFSET(resource), AV_OPT_TYPE_STRING, { .str = NULL }, 0, 0, E },
171  { "reply_code", "The http status code to return to a client", OFFSET(reply_code), AV_OPT_TYPE_INT, { .i64 = 200}, INT_MIN, 599, E},
172  { NULL }
173 };
174 
175 static int http_connect(URLContext *h, const char *path, const char *local_path,
176  const char *hoststr, const char *auth,
177  const char *proxyauth, int *new_location);
178 static int http_read_header(URLContext *h, int *new_location);
179 static int http_shutdown(URLContext *h, int flags);
180 
182 {
183  memcpy(&((HTTPContext *)dest->priv_data)->auth_state,
184  &((HTTPContext *)src->priv_data)->auth_state,
185  sizeof(HTTPAuthState));
186  memcpy(&((HTTPContext *)dest->priv_data)->proxy_auth_state,
187  &((HTTPContext *)src->priv_data)->proxy_auth_state,
188  sizeof(HTTPAuthState));
189 }
190 
192 {
193  const char *path, *proxy_path, *lower_proto = "tcp", *local_path;
194  char *hashmark;
195  char hostname[1024], hoststr[1024], proto[10];
196  char auth[1024], proxyauth[1024] = "";
197  char path1[MAX_URL_SIZE], sanitized_path[MAX_URL_SIZE];
198  char buf[1024], urlbuf[MAX_URL_SIZE];
199  int port, use_proxy, err, location_changed = 0;
200  HTTPContext *s = h->priv_data;
201 
202  av_url_split(proto, sizeof(proto), auth, sizeof(auth),
203  hostname, sizeof(hostname), &port,
204  path1, sizeof(path1), s->location);
205  ff_url_join(hoststr, sizeof(hoststr), NULL, NULL, hostname, port, NULL);
206 
207  proxy_path = s->http_proxy ? s->http_proxy : getenv("http_proxy");
208  use_proxy = !ff_http_match_no_proxy(getenv("no_proxy"), hostname) &&
209  proxy_path && av_strstart(proxy_path, "http://", NULL);
210 
211  if (!strcmp(proto, "https")) {
212  lower_proto = "tls";
213  use_proxy = 0;
214  if (port < 0)
215  port = 443;
216  }
217  if (port < 0)
218  port = 80;
219 
220  hashmark = strchr(path1, '#');
221  if (hashmark)
222  *hashmark = '\0';
223 
224  if (path1[0] == '\0') {
225  path = "/";
226  } else if (path1[0] == '?') {
227  snprintf(sanitized_path, sizeof(sanitized_path), "/%s", path1);
228  path = sanitized_path;
229  } else {
230  path = path1;
231  }
232  local_path = path;
233  if (use_proxy) {
234  /* Reassemble the request URL without auth string - we don't
235  * want to leak the auth to the proxy. */
236  ff_url_join(urlbuf, sizeof(urlbuf), proto, NULL, hostname, port, "%s",
237  path1);
238  path = urlbuf;
239  av_url_split(NULL, 0, proxyauth, sizeof(proxyauth),
240  hostname, sizeof(hostname), &port, NULL, 0, proxy_path);
241  }
242 
243  ff_url_join(buf, sizeof(buf), lower_proto, NULL, hostname, port, NULL);
244 
245  if (!s->hd) {
247  &h->interrupt_callback, options,
249  if (err < 0)
250  return err;
251  }
252 
253  err = http_connect(h, path, local_path, hoststr,
254  auth, proxyauth, &location_changed);
255  if (err < 0)
256  return err;
257 
258  return location_changed;
259 }
260 
261 /* return non zero if error */
262 static int http_open_cnx(URLContext *h, AVDictionary **options)
263 {
264  HTTPAuthType cur_auth_type, cur_proxy_auth_type;
265  HTTPContext *s = h->priv_data;
266  int location_changed, attempts = 0, redirects = 0;
267 redo:
268  av_dict_copy(options, s->chained_options, 0);
269 
270  cur_auth_type = s->auth_state.auth_type;
271  cur_proxy_auth_type = s->auth_state.auth_type;
272 
273  location_changed = http_open_cnx_internal(h, options);
274  if (location_changed < 0)
275  goto fail;
276 
277  attempts++;
278  if (s->http_code == 401) {
279  if ((cur_auth_type == HTTP_AUTH_NONE || s->auth_state.stale) &&
280  s->auth_state.auth_type != HTTP_AUTH_NONE && attempts < 4) {
281  ffurl_closep(&s->hd);
282  goto redo;
283  } else
284  goto fail;
285  }
286  if (s->http_code == 407) {
287  if ((cur_proxy_auth_type == HTTP_AUTH_NONE || s->proxy_auth_state.stale) &&
288  s->proxy_auth_state.auth_type != HTTP_AUTH_NONE && attempts < 4) {
289  ffurl_closep(&s->hd);
290  goto redo;
291  } else
292  goto fail;
293  }
294  if ((s->http_code == 301 || s->http_code == 302 ||
295  s->http_code == 303 || s->http_code == 307) &&
296  location_changed == 1) {
297  /* url moved, get next */
298  ffurl_closep(&s->hd);
299  if (redirects++ >= MAX_REDIRECTS)
300  return AVERROR(EIO);
301  /* Restart the authentication process with the new target, which
302  * might use a different auth mechanism. */
303  memset(&s->auth_state, 0, sizeof(s->auth_state));
304  attempts = 0;
305  location_changed = 0;
306  goto redo;
307  }
308  return 0;
309 
310 fail:
311  if (s->hd)
312  ffurl_closep(&s->hd);
313  if (location_changed < 0)
314  return location_changed;
315  return ff_http_averror(s->http_code, AVERROR(EIO));
316 }
318 {
319  int ret = 0;
320  HTTPContext *s = h->priv_data;
321 
322  /* flush the receive buffer when it is write only mode */
323  char buf[1024];
324  int read_ret;
325  read_ret = ffurl_read(s->hd, buf, sizeof(buf));
326  if (read_ret < 0) {
327  ret = read_ret;
328  }
329 
330  return ret;
331 }
332 
333 int ff_http_do_new_request(URLContext *h, const char *uri) {
334  return ff_http_do_new_request2(h, uri, NULL);
335 }
336 
338 {
339  HTTPContext *s = h->priv_data;
340  AVDictionary *options = NULL;
341  int ret;
342  char hostname1[1024], hostname2[1024], proto1[10], proto2[10];
343  int port1, port2;
344 
345  if (!h->prot ||
346  !(!strcmp(h->prot->name, "http") ||
347  !strcmp(h->prot->name, "https")))
348  return AVERROR(EINVAL);
349 
350  av_url_split(proto1, sizeof(proto1), NULL, 0,
351  hostname1, sizeof(hostname1), &port1,
352  NULL, 0, s->location);
353  av_url_split(proto2, sizeof(proto2), NULL, 0,
354  hostname2, sizeof(hostname2), &port2,
355  NULL, 0, uri);
356  if (port1 != port2 || strncmp(hostname1, hostname2, sizeof(hostname2)) != 0) {
357  av_log(h, AV_LOG_ERROR, "Cannot reuse HTTP connection for different host: %s:%d != %s:%d\n",
358  hostname1, port1,
359  hostname2, port2
360  );
361  return AVERROR(EINVAL);
362  }
363 
364  if (!s->end_chunked_post) {
365  ret = http_shutdown(h, h->flags);
366  if (ret < 0)
367  return ret;
368  }
369 
370  if (s->willclose)
371  return AVERROR_EOF;
372 
373  s->end_chunked_post = 0;
374  s->chunkend = 0;
375  s->off = 0;
376  s->icy_data_read = 0;
377  av_free(s->location);
378  s->location = av_strdup(uri);
379  if (!s->location)
380  return AVERROR(ENOMEM);
381 
382  if ((ret = av_opt_set_dict(s, opts)) < 0)
383  return ret;
384 
385  av_log(s, AV_LOG_INFO, "Opening \'%s\' for %s\n", uri, h->flags & AVIO_FLAG_WRITE ? "writing" : "reading");
386  ret = http_open_cnx(h, &options);
387  av_dict_free(&options);
388  return ret;
389 }
390 
391 int ff_http_averror(int status_code, int default_averror)
392 {
393  switch (status_code) {
394  case 400: return AVERROR_HTTP_BAD_REQUEST;
395  case 401: return AVERROR_HTTP_UNAUTHORIZED;
396  case 403: return AVERROR_HTTP_FORBIDDEN;
397  case 404: return AVERROR_HTTP_NOT_FOUND;
398  default: break;
399  }
400  if (status_code >= 400 && status_code <= 499)
401  return AVERROR_HTTP_OTHER_4XX;
402  else if (status_code >= 500)
404  else
405  return default_averror;
406 }
407 
408 static int http_write_reply(URLContext* h, int status_code)
409 {
410  int ret, body = 0, reply_code, message_len;
411  const char *reply_text, *content_type;
412  HTTPContext *s = h->priv_data;
413  char message[BUFFER_SIZE];
414  content_type = "text/plain";
415 
416  if (status_code < 0)
417  body = 1;
418  switch (status_code) {
420  case 400:
421  reply_code = 400;
422  reply_text = "Bad Request";
423  break;
425  case 403:
426  reply_code = 403;
427  reply_text = "Forbidden";
428  break;
430  case 404:
431  reply_code = 404;
432  reply_text = "Not Found";
433  break;
434  case 200:
435  reply_code = 200;
436  reply_text = "OK";
437  content_type = s->content_type ? s->content_type : "application/octet-stream";
438  break;
440  case 500:
441  reply_code = 500;
442  reply_text = "Internal server error";
443  break;
444  default:
445  return AVERROR(EINVAL);
446  }
447  if (body) {
448  s->chunked_post = 0;
449  message_len = snprintf(message, sizeof(message),
450  "HTTP/1.1 %03d %s\r\n"
451  "Content-Type: %s\r\n"
452  "Content-Length: %"SIZE_SPECIFIER"\r\n"
453  "%s"
454  "\r\n"
455  "%03d %s\r\n",
456  reply_code,
457  reply_text,
458  content_type,
459  strlen(reply_text) + 6, // 3 digit status code + space + \r\n
460  s->headers ? s->headers : "",
461  reply_code,
462  reply_text);
463  } else {
464  s->chunked_post = 1;
465  message_len = snprintf(message, sizeof(message),
466  "HTTP/1.1 %03d %s\r\n"
467  "Content-Type: %s\r\n"
468  "Transfer-Encoding: chunked\r\n"
469  "%s"
470  "\r\n",
471  reply_code,
472  reply_text,
473  content_type,
474  s->headers ? s->headers : "");
475  }
476  av_log(h, AV_LOG_TRACE, "HTTP reply header: \n%s----\n", message);
477  if ((ret = ffurl_write(s->hd, message, message_len)) < 0)
478  return ret;
479  return 0;
480 }
481 
482 static void handle_http_errors(URLContext *h, int error)
483 {
484  av_assert0(error < 0);
485  http_write_reply(h, error);
486 }
487 
489 {
490  int ret, err, new_location;
491  HTTPContext *ch = c->priv_data;
492  URLContext *cl = ch->hd;
493  switch (ch->handshake_step) {
494  case LOWER_PROTO:
495  av_log(c, AV_LOG_TRACE, "Lower protocol\n");
496  if ((ret = ffurl_handshake(cl)) > 0)
497  return 2 + ret;
498  if (ret < 0)
499  return ret;
501  ch->is_connected_server = 1;
502  return 2;
503  case READ_HEADERS:
504  av_log(c, AV_LOG_TRACE, "Read headers\n");
505  if ((err = http_read_header(c, &new_location)) < 0) {
506  handle_http_errors(c, err);
507  return err;
508  }
510  return 1;
511  case WRITE_REPLY_HEADERS:
512  av_log(c, AV_LOG_TRACE, "Reply code: %d\n", ch->reply_code);
513  if ((err = http_write_reply(c, ch->reply_code)) < 0)
514  return err;
515  ch->handshake_step = FINISH;
516  return 1;
517  case FINISH:
518  return 0;
519  }
520  // this should never be reached.
521  return AVERROR(EINVAL);
522 }
523 
524 static int http_listen(URLContext *h, const char *uri, int flags,
525  AVDictionary **options) {
526  HTTPContext *s = h->priv_data;
527  int ret;
528  char hostname[1024], proto[10];
529  char lower_url[100];
530  const char *lower_proto = "tcp";
531  int port;
532  av_url_split(proto, sizeof(proto), NULL, 0, hostname, sizeof(hostname), &port,
533  NULL, 0, uri);
534  if (!strcmp(proto, "https"))
535  lower_proto = "tls";
536  ff_url_join(lower_url, sizeof(lower_url), lower_proto, NULL, hostname, port,
537  NULL);
538  if ((ret = av_dict_set_int(options, "listen", s->listen, 0)) < 0)
539  goto fail;
540  if ((ret = ffurl_open_whitelist(&s->hd, lower_url, AVIO_FLAG_READ_WRITE,
541  &h->interrupt_callback, options,
543  )) < 0)
544  goto fail;
546  if (s->listen == HTTP_SINGLE) { /* single client */
547  s->reply_code = 200;
548  while ((ret = http_handshake(h)) > 0);
549  }
550 fail:
552  return ret;
553 }
554 
555 static int http_open(URLContext *h, const char *uri, int flags,
556  AVDictionary **options)
557 {
558  HTTPContext *s = h->priv_data;
559  int ret;
560 
561  if( s->seekable == 1 )
562  h->is_streamed = 0;
563  else
564  h->is_streamed = 1;
565 
566  s->filesize = UINT64_MAX;
567  s->location = av_strdup(uri);
568  if (!s->location)
569  return AVERROR(ENOMEM);
570  if (options)
571  av_dict_copy(&s->chained_options, *options, 0);
572 
573  if (s->headers) {
574  int len = strlen(s->headers);
575  if (len < 2 || strcmp("\r\n", s->headers + len - 2)) {
577  "No trailing CRLF found in HTTP header. Adding it.\n");
578  ret = av_reallocp(&s->headers, len + 3);
579  if (ret < 0)
580  return ret;
581  s->headers[len] = '\r';
582  s->headers[len + 1] = '\n';
583  s->headers[len + 2] = '\0';
584  }
585  }
586 
587  if (s->listen) {
588  return http_listen(h, uri, flags, options);
589  }
590  ret = http_open_cnx(h, options);
591  if (ret < 0)
593  return ret;
594 }
595 
597 {
598  int ret;
599  HTTPContext *sc = s->priv_data;
600  HTTPContext *cc;
601  URLContext *sl = sc->hd;
602  URLContext *cl = NULL;
603 
604  av_assert0(sc->listen);
605  if ((ret = ffurl_alloc(c, s->filename, s->flags, &sl->interrupt_callback)) < 0)
606  goto fail;
607  cc = (*c)->priv_data;
608  if ((ret = ffurl_accept(sl, &cl)) < 0)
609  goto fail;
610  cc->hd = cl;
611  cc->is_multi_client = 1;
612  return 0;
613 fail:
614  if (c) {
615  ffurl_closep(c);
616  }
617  return ret;
618 }
619 
620 static int http_getc(HTTPContext *s)
621 {
622  int len;
623  if (s->buf_ptr >= s->buf_end) {
624  len = ffurl_read(s->hd, s->buffer, BUFFER_SIZE);
625  if (len < 0) {
626  return len;
627  } else if (len == 0) {
628  return AVERROR_EOF;
629  } else {
630  s->buf_ptr = s->buffer;
631  s->buf_end = s->buffer + len;
632  }
633  }
634  return *s->buf_ptr++;
635 }
636 
637 static int http_get_line(HTTPContext *s, char *line, int line_size)
638 {
639  int ch;
640  char *q;
641 
642  q = line;
643  for (;;) {
644  ch = http_getc(s);
645  if (ch < 0)
646  return ch;
647  if (ch == '\n') {
648  /* process line */
649  if (q > line && q[-1] == '\r')
650  q--;
651  *q = '\0';
652 
653  return 0;
654  } else {
655  if ((q - line) < line_size - 1)
656  *q++ = ch;
657  }
658  }
659 }
660 
661 static int check_http_code(URLContext *h, int http_code, const char *end)
662 {
663  HTTPContext *s = h->priv_data;
664  /* error codes are 4xx and 5xx, but regard 401 as a success, so we
665  * don't abort until all headers have been parsed. */
666  if (http_code >= 400 && http_code < 600 &&
667  (http_code != 401 || s->auth_state.auth_type != HTTP_AUTH_NONE) &&
668  (http_code != 407 || s->proxy_auth_state.auth_type != HTTP_AUTH_NONE)) {
669  end += strspn(end, SPACE_CHARS);
670  av_log(h, AV_LOG_WARNING, "HTTP error %d %s\n", http_code, end);
671  return ff_http_averror(http_code, AVERROR(EIO));
672  }
673  return 0;
674 }
675 
676 static int parse_location(HTTPContext *s, const char *p)
677 {
678  char redirected_location[MAX_URL_SIZE], *new_loc;
679  ff_make_absolute_url(redirected_location, sizeof(redirected_location),
680  s->location, p);
681  new_loc = av_strdup(redirected_location);
682  if (!new_loc)
683  return AVERROR(ENOMEM);
684  av_free(s->location);
685  s->location = new_loc;
686  return 0;
687 }
688 
689 /* "bytes $from-$to/$document_size" */
690 static void parse_content_range(URLContext *h, const char *p)
691 {
692  HTTPContext *s = h->priv_data;
693  const char *slash;
694 
695  if (!strncmp(p, "bytes ", 6)) {
696  p += 6;
697  s->off = strtoull(p, NULL, 10);
698  if ((slash = strchr(p, '/')) && strlen(slash) > 0)
699  s->filesize = strtoull(slash + 1, NULL, 10);
700  }
701  if (s->seekable == -1 && (!s->is_akamai || s->filesize != 2147483647))
702  h->is_streamed = 0; /* we _can_ in fact seek */
703 }
704 
705 static int parse_content_encoding(URLContext *h, const char *p)
706 {
707  if (!av_strncasecmp(p, "gzip", 4) ||
708  !av_strncasecmp(p, "deflate", 7)) {
709 #if CONFIG_ZLIB
710  HTTPContext *s = h->priv_data;
711 
712  s->compressed = 1;
713  inflateEnd(&s->inflate_stream);
714  if (inflateInit2(&s->inflate_stream, 32 + 15) != Z_OK) {
715  av_log(h, AV_LOG_WARNING, "Error during zlib initialisation: %s\n",
716  s->inflate_stream.msg);
717  return AVERROR(ENOSYS);
718  }
719  if (zlibCompileFlags() & (1 << 17)) {
721  "Your zlib was compiled without gzip support.\n");
722  return AVERROR(ENOSYS);
723  }
724 #else
726  "Compressed (%s) content, need zlib with gzip support\n", p);
727  return AVERROR(ENOSYS);
728 #endif /* CONFIG_ZLIB */
729  } else if (!av_strncasecmp(p, "identity", 8)) {
730  // The normal, no-encoding case (although servers shouldn't include
731  // the header at all if this is the case).
732  } else {
733  av_log(h, AV_LOG_WARNING, "Unknown content coding: %s\n", p);
734  }
735  return 0;
736 }
737 
738 // Concat all Icy- header lines
739 static int parse_icy(HTTPContext *s, const char *tag, const char *p)
740 {
741  int len = 4 + strlen(p) + strlen(tag);
742  int is_first = !s->icy_metadata_headers;
743  int ret;
744 
745  av_dict_set(&s->metadata, tag, p, 0);
746 
747  if (s->icy_metadata_headers)
748  len += strlen(s->icy_metadata_headers);
749 
750  if ((ret = av_reallocp(&s->icy_metadata_headers, len)) < 0)
751  return ret;
752 
753  if (is_first)
754  *s->icy_metadata_headers = '\0';
755 
756  av_strlcatf(s->icy_metadata_headers, len, "%s: %s\n", tag, p);
757 
758  return 0;
759 }
760 
761 static int parse_set_cookie_expiry_time(const char *exp_str, struct tm *buf)
762 {
763  char exp_buf[MAX_EXPIRY];
764  int i, j, exp_buf_len = MAX_EXPIRY-1;
765  char *expiry;
766 
767  // strip off any punctuation or whitespace
768  for (i = 0, j = 0; exp_str[i] != '\0' && j < exp_buf_len; i++) {
769  if ((exp_str[i] >= '0' && exp_str[i] <= '9') ||
770  (exp_str[i] >= 'A' && exp_str[i] <= 'Z') ||
771  (exp_str[i] >= 'a' && exp_str[i] <= 'z')) {
772  exp_buf[j] = exp_str[i];
773  j++;
774  }
775  }
776  exp_buf[j] = '\0';
777  expiry = exp_buf;
778 
779  // move the string beyond the day of week
780  while ((*expiry < '0' || *expiry > '9') && *expiry != '\0')
781  expiry++;
782 
783  return av_small_strptime(expiry, "%d%b%Y%H%M%S", buf) ? 0 : AVERROR(EINVAL);
784 }
785 
786 static int parse_set_cookie(const char *set_cookie, AVDictionary **dict)
787 {
788  char *param, *next_param, *cstr, *back;
789  char *saveptr = NULL;
790 
791  if (!set_cookie[0])
792  return 0;
793 
794  if (!(cstr = av_strdup(set_cookie)))
795  return AVERROR(EINVAL);
796 
797  // strip any trailing whitespace
798  back = &cstr[strlen(cstr)-1];
799  while (strchr(WHITESPACES, *back)) {
800  *back='\0';
801  if (back == cstr)
802  break;
803  back--;
804  }
805 
806  next_param = cstr;
807  while ((param = av_strtok(next_param, ";", &saveptr))) {
808  char *name, *value;
809  next_param = NULL;
810  param += strspn(param, WHITESPACES);
811  if ((name = av_strtok(param, "=", &value))) {
812  if (av_dict_set(dict, name, value, 0) < 0) {
813  av_free(cstr);
814  return -1;
815  }
816  }
817  }
818 
819  av_free(cstr);
820  return 0;
821 }
822 
823 static int parse_cookie(HTTPContext *s, const char *p, AVDictionary **cookies)
824 {
825  AVDictionary *new_params = NULL;
826  AVDictionaryEntry *e, *cookie_entry;
827  char *eql, *name;
828 
829  // ensure the cookie is parsable
830  if (parse_set_cookie(p, &new_params))
831  return -1;
832 
833  // if there is no cookie value there is nothing to parse
834  cookie_entry = av_dict_get(new_params, "", NULL, AV_DICT_IGNORE_SUFFIX);
835  if (!cookie_entry || !cookie_entry->value) {
836  av_dict_free(&new_params);
837  return -1;
838  }
839 
840  // ensure the cookie is not expired or older than an existing value
841  if ((e = av_dict_get(new_params, "expires", NULL, 0)) && e->value) {
842  struct tm new_tm = {0};
843  if (!parse_set_cookie_expiry_time(e->value, &new_tm)) {
844  AVDictionaryEntry *e2;
845 
846  // if the cookie has already expired ignore it
847  if (av_timegm(&new_tm) < av_gettime() / 1000000) {
848  av_dict_free(&new_params);
849  return 0;
850  }
851 
852  // only replace an older cookie with the same name
853  e2 = av_dict_get(*cookies, cookie_entry->key, NULL, 0);
854  if (e2 && e2->value) {
855  AVDictionary *old_params = NULL;
856  if (!parse_set_cookie(p, &old_params)) {
857  e2 = av_dict_get(old_params, "expires", NULL, 0);
858  if (e2 && e2->value) {
859  struct tm old_tm = {0};
860  if (!parse_set_cookie_expiry_time(e->value, &old_tm)) {
861  if (av_timegm(&new_tm) < av_timegm(&old_tm)) {
862  av_dict_free(&new_params);
863  av_dict_free(&old_params);
864  return -1;
865  }
866  }
867  }
868  }
869  av_dict_free(&old_params);
870  }
871  }
872  }
873  av_dict_free(&new_params);
874 
875  // duplicate the cookie name (dict will dupe the value)
876  if (!(eql = strchr(p, '='))) return AVERROR(EINVAL);
877  if (!(name = av_strndup(p, eql - p))) return AVERROR(ENOMEM);
878 
879  // add the cookie to the dictionary
880  av_dict_set(cookies, name, eql, AV_DICT_DONT_STRDUP_KEY);
881 
882  return 0;
883 }
884 
885 static int cookie_string(AVDictionary *dict, char **cookies)
886 {
887  AVDictionaryEntry *e = NULL;
888  int len = 1;
889 
890  // determine how much memory is needed for the cookies string
891  while (e = av_dict_get(dict, "", e, AV_DICT_IGNORE_SUFFIX))
892  len += strlen(e->key) + strlen(e->value) + 1;
893 
894  // reallocate the cookies
895  e = NULL;
896  if (*cookies) av_free(*cookies);
897  *cookies = av_malloc(len);
898  if (!*cookies) return AVERROR(ENOMEM);
899  *cookies[0] = '\0';
900 
901  // write out the cookies
902  while (e = av_dict_get(dict, "", e, AV_DICT_IGNORE_SUFFIX))
903  av_strlcatf(*cookies, len, "%s%s\n", e->key, e->value);
904 
905  return 0;
906 }
907 
908 static int process_line(URLContext *h, char *line, int line_count,
909  int *new_location)
910 {
911  HTTPContext *s = h->priv_data;
912  const char *auto_method = h->flags & AVIO_FLAG_READ ? "POST" : "GET";
913  char *tag, *p, *end, *method, *resource, *version;
914  int ret;
915 
916  /* end of header */
917  if (line[0] == '\0') {
918  s->end_header = 1;
919  return 0;
920  }
921 
922  p = line;
923  if (line_count == 0) {
924  if (s->is_connected_server) {
925  // HTTP method
926  method = p;
927  while (*p && !av_isspace(*p))
928  p++;
929  *(p++) = '\0';
930  av_log(h, AV_LOG_TRACE, "Received method: %s\n", method);
931  if (s->method) {
932  if (av_strcasecmp(s->method, method)) {
933  av_log(h, AV_LOG_ERROR, "Received and expected HTTP method do not match. (%s expected, %s received)\n",
934  s->method, method);
935  return ff_http_averror(400, AVERROR(EIO));
936  }
937  } else {
938  // use autodetected HTTP method to expect
939  av_log(h, AV_LOG_TRACE, "Autodetected %s HTTP method\n", auto_method);
940  if (av_strcasecmp(auto_method, method)) {
941  av_log(h, AV_LOG_ERROR, "Received and autodetected HTTP method did not match "
942  "(%s autodetected %s received)\n", auto_method, method);
943  return ff_http_averror(400, AVERROR(EIO));
944  }
945  if (!(s->method = av_strdup(method)))
946  return AVERROR(ENOMEM);
947  }
948 
949  // HTTP resource
950  while (av_isspace(*p))
951  p++;
952  resource = p;
953  while (*p && !av_isspace(*p))
954  p++;
955  *(p++) = '\0';
956  av_log(h, AV_LOG_TRACE, "Requested resource: %s\n", resource);
957  if (!(s->resource = av_strdup(resource)))
958  return AVERROR(ENOMEM);
959 
960  // HTTP version
961  while (av_isspace(*p))
962  p++;
963  version = p;
964  while (*p && !av_isspace(*p))
965  p++;
966  *p = '\0';
967  if (av_strncasecmp(version, "HTTP/", 5)) {
968  av_log(h, AV_LOG_ERROR, "Malformed HTTP version string.\n");
969  return ff_http_averror(400, AVERROR(EIO));
970  }
971  av_log(h, AV_LOG_TRACE, "HTTP version string: %s\n", version);
972  } else {
973  if (av_strncasecmp(p, "HTTP/1.0", 8) == 0)
974  s->willclose = 1;
975  while (*p != '/' && *p != '\0')
976  p++;
977  while (*p == '/')
978  p++;
979  av_freep(&s->http_version);
980  s->http_version = av_strndup(p, 3);
981  while (!av_isspace(*p) && *p != '\0')
982  p++;
983  while (av_isspace(*p))
984  p++;
985  s->http_code = strtol(p, &end, 10);
986 
987  av_log(h, AV_LOG_TRACE, "http_code=%d\n", s->http_code);
988 
989  if ((ret = check_http_code(h, s->http_code, end)) < 0)
990  return ret;
991  }
992  } else {
993  while (*p != '\0' && *p != ':')
994  p++;
995  if (*p != ':')
996  return 1;
997 
998  *p = '\0';
999  tag = line;
1000  p++;
1001  while (av_isspace(*p))
1002  p++;
1003  if (!av_strcasecmp(tag, "Location")) {
1004  if ((ret = parse_location(s, p)) < 0)
1005  return ret;
1006  *new_location = 1;
1007  } else if (!av_strcasecmp(tag, "Content-Length") &&
1008  s->filesize == UINT64_MAX) {
1009  s->filesize = strtoull(p, NULL, 10);
1010  } else if (!av_strcasecmp(tag, "Content-Range")) {
1011  parse_content_range(h, p);
1012  } else if (!av_strcasecmp(tag, "Accept-Ranges") &&
1013  !strncmp(p, "bytes", 5) &&
1014  s->seekable == -1) {
1015  h->is_streamed = 0;
1016  } else if (!av_strcasecmp(tag, "Transfer-Encoding") &&
1017  !av_strncasecmp(p, "chunked", 7)) {
1018  s->filesize = UINT64_MAX;
1019  s->chunksize = 0;
1020  } else if (!av_strcasecmp(tag, "WWW-Authenticate")) {
1022  } else if (!av_strcasecmp(tag, "Authentication-Info")) {
1024  } else if (!av_strcasecmp(tag, "Proxy-Authenticate")) {
1026  } else if (!av_strcasecmp(tag, "Connection")) {
1027  if (!strcmp(p, "close"))
1028  s->willclose = 1;
1029  } else if (!av_strcasecmp(tag, "Server")) {
1030  if (!av_strcasecmp(p, "AkamaiGHost")) {
1031  s->is_akamai = 1;
1032  } else if (!av_strncasecmp(p, "MediaGateway", 12)) {
1033  s->is_mediagateway = 1;
1034  }
1035  } else if (!av_strcasecmp(tag, "Content-Type")) {
1036  av_free(s->mime_type);
1037  s->mime_type = av_strdup(p);
1038  } else if (!av_strcasecmp(tag, "Set-Cookie")) {
1039  if (parse_cookie(s, p, &s->cookie_dict))
1040  av_log(h, AV_LOG_WARNING, "Unable to parse '%s'\n", p);
1041  } else if (!av_strcasecmp(tag, "Icy-MetaInt")) {
1042  s->icy_metaint = strtoull(p, NULL, 10);
1043  } else if (!av_strncasecmp(tag, "Icy-", 4)) {
1044  if ((ret = parse_icy(s, tag, p)) < 0)
1045  return ret;
1046  } else if (!av_strcasecmp(tag, "Content-Encoding")) {
1047  if ((ret = parse_content_encoding(h, p)) < 0)
1048  return ret;
1049  }
1050  }
1051  return 1;
1052 }
1053 
1054 /**
1055  * Create a string containing cookie values for use as a HTTP cookie header
1056  * field value for a particular path and domain from the cookie values stored in
1057  * the HTTP protocol context. The cookie string is stored in *cookies, and may
1058  * be NULL if there are no valid cookies.
1059  *
1060  * @return a negative value if an error condition occurred, 0 otherwise
1061  */
1062 static int get_cookies(HTTPContext *s, char **cookies, const char *path,
1063  const char *domain)
1064 {
1065  // cookie strings will look like Set-Cookie header field values. Multiple
1066  // Set-Cookie fields will result in multiple values delimited by a newline
1067  int ret = 0;
1068  char *cookie, *set_cookies, *next;
1069  char *saveptr = NULL;
1070 
1071  // destroy any cookies in the dictionary.
1073 
1074  if (!s->cookies)
1075  return 0;
1076 
1077  next = set_cookies = av_strdup(s->cookies);
1078  if (!next)
1079  return AVERROR(ENOMEM);
1080 
1081  *cookies = NULL;
1082  while ((cookie = av_strtok(next, "\n", &saveptr)) && !ret) {
1083  AVDictionary *cookie_params = NULL;
1084  AVDictionaryEntry *cookie_entry, *e;
1085 
1086  next = NULL;
1087  // store the cookie in a dict in case it is updated in the response
1088  if (parse_cookie(s, cookie, &s->cookie_dict))
1089  av_log(s, AV_LOG_WARNING, "Unable to parse '%s'\n", cookie);
1090 
1091  // continue on to the next cookie if this one cannot be parsed
1092  if (parse_set_cookie(cookie, &cookie_params))
1093  goto skip_cookie;
1094 
1095  // if the cookie has no value, skip it
1096  cookie_entry = av_dict_get(cookie_params, "", NULL, AV_DICT_IGNORE_SUFFIX);
1097  if (!cookie_entry || !cookie_entry->value)
1098  goto skip_cookie;
1099 
1100  // if the cookie has expired, don't add it
1101  if ((e = av_dict_get(cookie_params, "expires", NULL, 0)) && e->value) {
1102  struct tm tm_buf = {0};
1103  if (!parse_set_cookie_expiry_time(e->value, &tm_buf)) {
1104  if (av_timegm(&tm_buf) < av_gettime() / 1000000)
1105  goto skip_cookie;
1106  }
1107  }
1108 
1109  // if no domain in the cookie assume it appied to this request
1110  if ((e = av_dict_get(cookie_params, "domain", NULL, 0)) && e->value) {
1111  // find the offset comparison is on the min domain (b.com, not a.b.com)
1112  int domain_offset = strlen(domain) - strlen(e->value);
1113  if (domain_offset < 0)
1114  goto skip_cookie;
1115 
1116  // match the cookie domain
1117  if (av_strcasecmp(&domain[domain_offset], e->value))
1118  goto skip_cookie;
1119  }
1120 
1121  // ensure this cookie matches the path
1122  e = av_dict_get(cookie_params, "path", NULL, 0);
1123  if (!e || av_strncasecmp(path, e->value, strlen(e->value)))
1124  goto skip_cookie;
1125 
1126  // cookie parameters match, so copy the value
1127  if (!*cookies) {
1128  *cookies = av_asprintf("%s=%s", cookie_entry->key, cookie_entry->value);
1129  } else {
1130  char *tmp = *cookies;
1131  *cookies = av_asprintf("%s; %s=%s", tmp, cookie_entry->key, cookie_entry->value);
1132  av_free(tmp);
1133  }
1134  if (!*cookies)
1135  ret = AVERROR(ENOMEM);
1136 
1137  skip_cookie:
1138  av_dict_free(&cookie_params);
1139  }
1140 
1141  av_free(set_cookies);
1142 
1143  return ret;
1144 }
1145 
1146 static inline int has_header(const char *str, const char *header)
1147 {
1148  /* header + 2 to skip over CRLF prefix. (make sure you have one!) */
1149  if (!str)
1150  return 0;
1151  return av_stristart(str, header + 2, NULL) || av_stristr(str, header);
1152 }
1153 
1154 static int http_read_header(URLContext *h, int *new_location)
1155 {
1156  HTTPContext *s = h->priv_data;
1157  char line[MAX_URL_SIZE];
1158  int err = 0;
1159 
1160  s->chunksize = UINT64_MAX;
1161 
1162  for (;;) {
1163  if ((err = http_get_line(s, line, sizeof(line))) < 0)
1164  return err;
1165 
1166  av_log(h, AV_LOG_TRACE, "header='%s'\n", line);
1167 
1168  err = process_line(h, line, s->line_count, new_location);
1169  if (err < 0)
1170  return err;
1171  if (err == 0)
1172  break;
1173  s->line_count++;
1174  }
1175 
1176  if (s->seekable == -1 && s->is_mediagateway && s->filesize == 2000000000)
1177  h->is_streamed = 1; /* we can in fact _not_ seek */
1178 
1179  // add any new cookies into the existing cookie string
1182 
1183  return err;
1184 }
1185 
1186 /**
1187  * Escape unsafe characters in path in order to pass them safely to the HTTP
1188  * request. Insipred by the algorithm in GNU wget:
1189  * - escape "%" characters not followed by two hex digits
1190  * - escape all "unsafe" characters except which are also "reserved"
1191  * - pass through everything else
1192  */
1193 static void bprint_escaped_path(AVBPrint *bp, const char *path)
1194 {
1195 #define NEEDS_ESCAPE(ch) \
1196  ((ch) <= ' ' || (ch) >= '\x7f' || \
1197  (ch) == '"' || (ch) == '%' || (ch) == '<' || (ch) == '>' || (ch) == '\\' || \
1198  (ch) == '^' || (ch) == '`' || (ch) == '{' || (ch) == '}' || (ch) == '|')
1199  while (*path) {
1200  char buf[1024];
1201  char *q = buf;
1202  while (*path && q - buf < sizeof(buf) - 4) {
1203  if (path[0] == '%' && av_isxdigit(path[1]) && av_isxdigit(path[2])) {
1204  *q++ = *path++;
1205  *q++ = *path++;
1206  *q++ = *path++;
1207  } else if (NEEDS_ESCAPE(*path)) {
1208  q += snprintf(q, 4, "%%%02X", (uint8_t)*path++);
1209  } else {
1210  *q++ = *path++;
1211  }
1212  }
1213  av_bprint_append_data(bp, buf, q - buf);
1214  }
1215 }
1216 
1217 static int http_connect(URLContext *h, const char *path, const char *local_path,
1218  const char *hoststr, const char *auth,
1219  const char *proxyauth, int *new_location)
1220 {
1221  HTTPContext *s = h->priv_data;
1222  int post, err;
1223  AVBPrint request;
1224  char *authstr = NULL, *proxyauthstr = NULL;
1225  uint64_t off = s->off;
1226  const char *method;
1227  int send_expect_100 = 0;
1228 
1229  av_bprint_init_for_buffer(&request, s->buffer, sizeof(s->buffer));
1230 
1231  /* send http header */
1232  post = h->flags & AVIO_FLAG_WRITE;
1233 
1234  if (s->post_data) {
1235  /* force POST method and disable chunked encoding when
1236  * custom HTTP post data is set */
1237  post = 1;
1238  s->chunked_post = 0;
1239  }
1240 
1241  if (s->method)
1242  method = s->method;
1243  else
1244  method = post ? "POST" : "GET";
1245 
1246  authstr = ff_http_auth_create_response(&s->auth_state, auth,
1247  local_path, method);
1248  proxyauthstr = ff_http_auth_create_response(&s->proxy_auth_state, proxyauth,
1249  local_path, method);
1250 
1251  if (post && !s->post_data) {
1252  if (s->send_expect_100 != -1) {
1253  send_expect_100 = s->send_expect_100;
1254  } else {
1255  send_expect_100 = 0;
1256  /* The user has supplied authentication but we don't know the auth type,
1257  * send Expect: 100-continue to get the 401 response including the
1258  * WWW-Authenticate header, or an 100 continue if no auth actually
1259  * is needed. */
1260  if (auth && *auth &&
1262  s->http_code != 401)
1263  send_expect_100 = 1;
1264  }
1265  }
1266 
1267 #if FF_API_HTTP_USER_AGENT
1268  if (strcmp(s->user_agent_deprecated, DEFAULT_USER_AGENT)) {
1269  s->user_agent = av_strdup(s->user_agent_deprecated);
1270  }
1271 #endif
1272 
1273  av_bprintf(&request, "%s ", method);
1274  bprint_escaped_path(&request, path);
1275  av_bprintf(&request, " HTTP/1.1\r\n");
1276 
1277  if (post && s->chunked_post)
1278  av_bprintf(&request, "Transfer-Encoding: chunked\r\n");
1279  /* set default headers if needed */
1280  if (!has_header(s->headers, "\r\nUser-Agent: "))
1281  av_bprintf(&request, "User-Agent: %s\r\n", s->user_agent);
1282  if (s->referer) {
1283  /* set default headers if needed */
1284  if (!has_header(s->headers, "\r\nReferer: "))
1285  av_bprintf(&request, "Referer: %s\r\n", s->referer);
1286  }
1287  if (!has_header(s->headers, "\r\nAccept: "))
1288  av_bprintf(&request, "Accept: */*\r\n");
1289  // Note: we send this on purpose even when s->off is 0 when we're probing,
1290  // since it allows us to detect more reliably if a (non-conforming)
1291  // server supports seeking by analysing the reply headers.
1292  if (!has_header(s->headers, "\r\nRange: ") && !post && (s->off > 0 || s->end_off || s->seekable == -1)) {
1293  av_bprintf(&request, "Range: bytes=%"PRIu64"-", s->off);
1294  if (s->end_off)
1295  av_bprintf(&request, "%"PRId64, s->end_off - 1);
1296  av_bprintf(&request, "\r\n");
1297  }
1298  if (send_expect_100 && !has_header(s->headers, "\r\nExpect: "))
1299  av_bprintf(&request, "Expect: 100-continue\r\n");
1300 
1301  if (!has_header(s->headers, "\r\nConnection: "))
1302  av_bprintf(&request, "Connection: %s\r\n", s->multiple_requests ? "keep-alive" : "close");
1303 
1304  if (!has_header(s->headers, "\r\nHost: "))
1305  av_bprintf(&request, "Host: %s\r\n", hoststr);
1306  if (!has_header(s->headers, "\r\nContent-Length: ") && s->post_data)
1307  av_bprintf(&request, "Content-Length: %d\r\n", s->post_datalen);
1308 
1309  if (!has_header(s->headers, "\r\nContent-Type: ") && s->content_type)
1310  av_bprintf(&request, "Content-Type: %s\r\n", s->content_type);
1311  if (!has_header(s->headers, "\r\nCookie: ") && s->cookies) {
1312  char *cookies = NULL;
1313  if (!get_cookies(s, &cookies, path, hoststr) && cookies) {
1314  av_bprintf(&request, "Cookie: %s\r\n", cookies);
1315  av_free(cookies);
1316  }
1317  }
1318  if (!has_header(s->headers, "\r\nIcy-MetaData: ") && s->icy)
1319  av_bprintf(&request, "Icy-MetaData: 1\r\n");
1320 
1321  /* now add in custom headers */
1322  if (s->headers)
1323  av_bprintf(&request, "%s", s->headers);
1324 
1325  if (authstr)
1326  av_bprintf(&request, "%s", authstr);
1327  if (proxyauthstr)
1328  av_bprintf(&request, "Proxy-%s", proxyauthstr);
1329  av_bprintf(&request, "\r\n");
1330 
1331  av_log(h, AV_LOG_DEBUG, "request: %s\n", request.str);
1332 
1333  if (!av_bprint_is_complete(&request)) {
1334  av_log(h, AV_LOG_ERROR, "overlong headers\n");
1335  err = AVERROR(EINVAL);
1336  goto done;
1337  }
1338 
1339  if ((err = ffurl_write(s->hd, request.str, request.len)) < 0)
1340  goto done;
1341 
1342  if (s->post_data)
1343  if ((err = ffurl_write(s->hd, s->post_data, s->post_datalen)) < 0)
1344  goto done;
1345 
1346  /* init input buffer */
1347  s->buf_ptr = s->buffer;
1348  s->buf_end = s->buffer;
1349  s->line_count = 0;
1350  s->off = 0;
1351  s->icy_data_read = 0;
1352  s->filesize = UINT64_MAX;
1353  s->willclose = 0;
1354  s->end_chunked_post = 0;
1355  s->end_header = 0;
1356 #if CONFIG_ZLIB
1357  s->compressed = 0;
1358 #endif
1359  if (post && !s->post_data && !send_expect_100) {
1360  /* Pretend that it did work. We didn't read any header yet, since
1361  * we've still to send the POST data, but the code calling this
1362  * function will check http_code after we return. */
1363  s->http_code = 200;
1364  err = 0;
1365  goto done;
1366  }
1367 
1368  /* wait for header */
1369  err = http_read_header(h, new_location);
1370  if (err < 0)
1371  goto done;
1372 
1373  if (*new_location)
1374  s->off = off;
1375 
1376  err = (off == s->off) ? 0 : -1;
1377 done:
1378  av_freep(&authstr);
1379  av_freep(&proxyauthstr);
1380  return err;
1381 }
1382 
1383 static int http_buf_read(URLContext *h, uint8_t *buf, int size)
1384 {
1385  HTTPContext *s = h->priv_data;
1386  int len;
1387 
1388  if (s->chunksize != UINT64_MAX) {
1389  if (s->chunkend) {
1390  return AVERROR_EOF;
1391  }
1392  if (!s->chunksize) {
1393  char line[32];
1394  int err;
1395 
1396  do {
1397  if ((err = http_get_line(s, line, sizeof(line))) < 0)
1398  return err;
1399  } while (!*line); /* skip CR LF from last chunk */
1400 
1401  s->chunksize = strtoull(line, NULL, 16);
1402 
1403  av_log(h, AV_LOG_TRACE,
1404  "Chunked encoding data size: %"PRIu64"\n",
1405  s->chunksize);
1406 
1407  if (!s->chunksize && s->multiple_requests) {
1408  http_get_line(s, line, sizeof(line)); // read empty chunk
1409  s->chunkend = 1;
1410  return 0;
1411  }
1412  else if (!s->chunksize) {
1413  av_log(h, AV_LOG_DEBUG, "Last chunk received, closing conn\n");
1414  ffurl_closep(&s->hd);
1415  return 0;
1416  }
1417  else if (s->chunksize == UINT64_MAX) {
1418  av_log(h, AV_LOG_ERROR, "Invalid chunk size %"PRIu64"\n",
1419  s->chunksize);
1420  return AVERROR(EINVAL);
1421  }
1422  }
1423  size = FFMIN(size, s->chunksize);
1424  }
1425 
1426  /* read bytes from input buffer first */
1427  len = s->buf_end - s->buf_ptr;
1428  if (len > 0) {
1429  if (len > size)
1430  len = size;
1431  memcpy(buf, s->buf_ptr, len);
1432  s->buf_ptr += len;
1433  } else {
1434  uint64_t target_end = s->end_off ? s->end_off : s->filesize;
1435  if ((!s->willclose || s->chunksize == UINT64_MAX) && s->off >= target_end)
1436  return AVERROR_EOF;
1437  len = ffurl_read(s->hd, buf, size);
1438  if (!len && (!s->willclose || s->chunksize == UINT64_MAX) && s->off < target_end) {
1439  av_log(h, AV_LOG_ERROR,
1440  "Stream ends prematurely at %"PRIu64", should be %"PRIu64"\n",
1441  s->off, target_end
1442  );
1443  return AVERROR(EIO);
1444  }
1445  }
1446  if (len > 0) {
1447  s->off += len;
1448  if (s->chunksize > 0 && s->chunksize != UINT64_MAX) {
1449  av_assert0(s->chunksize >= len);
1450  s->chunksize -= len;
1451  }
1452  }
1453  return len;
1454 }
1455 
1456 #if CONFIG_ZLIB
1457 #define DECOMPRESS_BUF_SIZE (256 * 1024)
1458 static int http_buf_read_compressed(URLContext *h, uint8_t *buf, int size)
1459 {
1460  HTTPContext *s = h->priv_data;
1461  int ret;
1462 
1463  if (!s->inflate_buffer) {
1464  s->inflate_buffer = av_malloc(DECOMPRESS_BUF_SIZE);
1465  if (!s->inflate_buffer)
1466  return AVERROR(ENOMEM);
1467  }
1468 
1469  if (s->inflate_stream.avail_in == 0) {
1470  int read = http_buf_read(h, s->inflate_buffer, DECOMPRESS_BUF_SIZE);
1471  if (read <= 0)
1472  return read;
1473  s->inflate_stream.next_in = s->inflate_buffer;
1474  s->inflate_stream.avail_in = read;
1475  }
1476 
1477  s->inflate_stream.avail_out = size;
1478  s->inflate_stream.next_out = buf;
1479 
1480  ret = inflate(&s->inflate_stream, Z_SYNC_FLUSH);
1481  if (ret != Z_OK && ret != Z_STREAM_END)
1482  av_log(h, AV_LOG_WARNING, "inflate return value: %d, %s\n",
1483  ret, s->inflate_stream.msg);
1484 
1485  return size - s->inflate_stream.avail_out;
1486 }
1487 #endif /* CONFIG_ZLIB */
1488 
1489 static int64_t http_seek_internal(URLContext *h, int64_t off, int whence, int force_reconnect);
1490 
1491 static int http_read_stream(URLContext *h, uint8_t *buf, int size)
1492 {
1493  HTTPContext *s = h->priv_data;
1494  int err, new_location, read_ret;
1495  int64_t seek_ret;
1496  int reconnect_delay = 0;
1497 
1498  if (!s->hd)
1499  return AVERROR_EOF;
1500 
1501  if (s->end_chunked_post && !s->end_header) {
1502  err = http_read_header(h, &new_location);
1503  if (err < 0)
1504  return err;
1505  }
1506 
1507 #if CONFIG_ZLIB
1508  if (s->compressed)
1509  return http_buf_read_compressed(h, buf, size);
1510 #endif /* CONFIG_ZLIB */
1511  read_ret = http_buf_read(h, buf, size);
1512  while (read_ret < 0) {
1513  uint64_t target = h->is_streamed ? 0 : s->off;
1514 
1515  if (read_ret == AVERROR_EXIT)
1516  break;
1517 
1518  if (h->is_streamed && !s->reconnect_streamed)
1519  break;
1520 
1521  if (!(s->reconnect && s->filesize > 0 && s->off < s->filesize) &&
1522  !(s->reconnect_at_eof && read_ret == AVERROR_EOF))
1523  break;
1524 
1525  if (reconnect_delay > s->reconnect_delay_max)
1526  return AVERROR(EIO);
1527 
1528  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));
1529  err = ff_network_sleep_interruptible(1000U*1000*reconnect_delay, &h->interrupt_callback);
1530  if (err != AVERROR(ETIMEDOUT))
1531  return err;
1532  reconnect_delay = 1 + 2*reconnect_delay;
1533  seek_ret = http_seek_internal(h, target, SEEK_SET, 1);
1534  if (seek_ret >= 0 && seek_ret != target) {
1535  av_log(h, AV_LOG_ERROR, "Failed to reconnect at %"PRIu64".\n", target);
1536  return read_ret;
1537  }
1538 
1539  read_ret = http_buf_read(h, buf, size);
1540  }
1541 
1542  return read_ret;
1543 }
1544 
1545 // Like http_read_stream(), but no short reads.
1546 // Assumes partial reads are an error.
1547 static int http_read_stream_all(URLContext *h, uint8_t *buf, int size)
1548 {
1549  int pos = 0;
1550  while (pos < size) {
1551  int len = http_read_stream(h, buf + pos, size - pos);
1552  if (len < 0)
1553  return len;
1554  pos += len;
1555  }
1556  return pos;
1557 }
1558 
1559 static void update_metadata(URLContext *h, char *data)
1560 {
1561  char *key;
1562  char *val;
1563  char *end;
1564  char *next = data;
1565  HTTPContext *s = h->priv_data;
1566 
1567  while (*next) {
1568  key = next;
1569  val = strstr(key, "='");
1570  if (!val)
1571  break;
1572  end = strstr(val, "';");
1573  if (!end)
1574  break;
1575 
1576  *val = '\0';
1577  *end = '\0';
1578  val += 2;
1579 
1580  av_dict_set(&s->metadata, key, val, 0);
1581  av_log(h, AV_LOG_VERBOSE, "Metadata update for %s: %s\n", key, val);
1582 
1583  next = end + 2;
1584  }
1585 }
1586 
1587 static int store_icy(URLContext *h, int size)
1588 {
1589  HTTPContext *s = h->priv_data;
1590  /* until next metadata packet */
1591  uint64_t remaining;
1592 
1593  if (s->icy_metaint < s->icy_data_read)
1594  return AVERROR_INVALIDDATA;
1595  remaining = s->icy_metaint - s->icy_data_read;
1596 
1597  if (!remaining) {
1598  /* The metadata packet is variable sized. It has a 1 byte header
1599  * which sets the length of the packet (divided by 16). If it's 0,
1600  * the metadata doesn't change. After the packet, icy_metaint bytes
1601  * of normal data follows. */
1602  uint8_t ch;
1603  int len = http_read_stream_all(h, &ch, 1);
1604  if (len < 0)
1605  return len;
1606  if (ch > 0) {
1607  char data[255 * 16 + 1];
1608  int ret;
1609  len = ch * 16;
1610  ret = http_read_stream_all(h, data, len);
1611  if (ret < 0)
1612  return ret;
1613  data[len + 1] = 0;
1614  if ((ret = av_opt_set(s, "icy_metadata_packet", data, 0)) < 0)
1615  return ret;
1616  update_metadata(h, data);
1617  }
1618  s->icy_data_read = 0;
1619  remaining = s->icy_metaint;
1620  }
1621 
1622  return FFMIN(size, remaining);
1623 }
1624 
1625 static int http_read(URLContext *h, uint8_t *buf, int size)
1626 {
1627  HTTPContext *s = h->priv_data;
1628 
1629  if (s->icy_metaint > 0) {
1630  size = store_icy(h, size);
1631  if (size < 0)
1632  return size;
1633  }
1634 
1635  size = http_read_stream(h, buf, size);
1636  if (size > 0)
1637  s->icy_data_read += size;
1638  return size;
1639 }
1640 
1641 /* used only when posting data */
1642 static int http_write(URLContext *h, const uint8_t *buf, int size)
1643 {
1644  char temp[11] = ""; /* 32-bit hex + CRLF + nul */
1645  int ret;
1646  char crlf[] = "\r\n";
1647  HTTPContext *s = h->priv_data;
1648 
1649  if (!s->chunked_post) {
1650  /* non-chunked data is sent without any special encoding */
1651  return ffurl_write(s->hd, buf, size);
1652  }
1653 
1654  /* silently ignore zero-size data since chunk encoding that would
1655  * signal EOF */
1656  if (size > 0) {
1657  /* upload data using chunked encoding */
1658  snprintf(temp, sizeof(temp), "%x\r\n", size);
1659 
1660  if ((ret = ffurl_write(s->hd, temp, strlen(temp))) < 0 ||
1661  (ret = ffurl_write(s->hd, buf, size)) < 0 ||
1662  (ret = ffurl_write(s->hd, crlf, sizeof(crlf) - 1)) < 0)
1663  return ret;
1664  }
1665  return size;
1666 }
1667 
1668 static int http_shutdown(URLContext *h, int flags)
1669 {
1670  int ret = 0;
1671  char footer[] = "0\r\n\r\n";
1672  HTTPContext *s = h->priv_data;
1673 
1674  /* signal end of chunked encoding if used */
1675  if (((flags & AVIO_FLAG_WRITE) && s->chunked_post) ||
1676  ((flags & AVIO_FLAG_READ) && s->chunked_post && s->listen)) {
1677  ret = ffurl_write(s->hd, footer, sizeof(footer) - 1);
1678  ret = ret > 0 ? 0 : ret;
1679  /* flush the receive buffer when it is write only mode */
1680  if (!(flags & AVIO_FLAG_READ)) {
1681  char buf[1024];
1682  int read_ret;
1683  s->hd->flags |= AVIO_FLAG_NONBLOCK;
1684  read_ret = ffurl_read(s->hd, buf, sizeof(buf));
1685  s->hd->flags &= ~AVIO_FLAG_NONBLOCK;
1686  if (read_ret < 0 && read_ret != AVERROR(EAGAIN)) {
1687  av_log(h, AV_LOG_ERROR, "URL read error: %s\n", av_err2str(read_ret));
1688  ret = read_ret;
1689  }
1690  }
1691  s->end_chunked_post = 1;
1692  }
1693 
1694  return ret;
1695 }
1696 
1697 static int http_close(URLContext *h)
1698 {
1699  int ret = 0;
1700  HTTPContext *s = h->priv_data;
1701 
1702 #if CONFIG_ZLIB
1703  inflateEnd(&s->inflate_stream);
1704  av_freep(&s->inflate_buffer);
1705 #endif /* CONFIG_ZLIB */
1706 
1707  if (s->hd && !s->end_chunked_post)
1708  /* Close the write direction by sending the end of chunked encoding. */
1709  ret = http_shutdown(h, h->flags);
1710 
1711  if (s->hd)
1712  ffurl_closep(&s->hd);
1714  return ret;
1715 }
1716 
1717 static int64_t http_seek_internal(URLContext *h, int64_t off, int whence, int force_reconnect)
1718 {
1719  HTTPContext *s = h->priv_data;
1720  URLContext *old_hd = s->hd;
1721  uint64_t old_off = s->off;
1722  uint8_t old_buf[BUFFER_SIZE];
1723  int old_buf_size, ret;
1724  AVDictionary *options = NULL;
1725 
1726  if (whence == AVSEEK_SIZE)
1727  return s->filesize;
1728  else if (!force_reconnect &&
1729  ((whence == SEEK_CUR && off == 0) ||
1730  (whence == SEEK_SET && off == s->off)))
1731  return s->off;
1732  else if ((s->filesize == UINT64_MAX && whence == SEEK_END))
1733  return AVERROR(ENOSYS);
1734 
1735  if (whence == SEEK_CUR)
1736  off += s->off;
1737  else if (whence == SEEK_END)
1738  off += s->filesize;
1739  else if (whence != SEEK_SET)
1740  return AVERROR(EINVAL);
1741  if (off < 0)
1742  return AVERROR(EINVAL);
1743  s->off = off;
1744 
1745  if (s->off && h->is_streamed)
1746  return AVERROR(ENOSYS);
1747 
1748  /* do not try to make a new connection if seeking past the end of the file */
1749  if (s->end_off || s->filesize != UINT64_MAX) {
1750  uint64_t end_pos = s->end_off ? s->end_off : s->filesize;
1751  if (s->off >= end_pos)
1752  return s->off;
1753  }
1754 
1755  /* we save the old context in case the seek fails */
1756  old_buf_size = s->buf_end - s->buf_ptr;
1757  memcpy(old_buf, s->buf_ptr, old_buf_size);
1758  s->hd = NULL;
1759 
1760  /* if it fails, continue on old connection */
1761  if ((ret = http_open_cnx(h, &options)) < 0) {
1762  av_dict_free(&options);
1763  memcpy(s->buffer, old_buf, old_buf_size);
1764  s->buf_ptr = s->buffer;
1765  s->buf_end = s->buffer + old_buf_size;
1766  s->hd = old_hd;
1767  s->off = old_off;
1768  return ret;
1769  }
1770  av_dict_free(&options);
1771  ffurl_close(old_hd);
1772  return off;
1773 }
1774 
1775 static int64_t http_seek(URLContext *h, int64_t off, int whence)
1776 {
1777  return http_seek_internal(h, off, whence, 0);
1778 }
1779 
1781 {
1782  HTTPContext *s = h->priv_data;
1783  return ffurl_get_file_handle(s->hd);
1784 }
1785 
1787 {
1788  HTTPContext *s = h->priv_data;
1789  return ffurl_get_short_seek(s->hd);
1790 }
1791 
1792 #define HTTP_CLASS(flavor) \
1793 static const AVClass flavor ## _context_class = { \
1794  .class_name = # flavor, \
1795  .item_name = av_default_item_name, \
1796  .option = options, \
1797  .version = LIBAVUTIL_VERSION_INT, \
1798 }
1799 
1800 #if CONFIG_HTTP_PROTOCOL
1801 HTTP_CLASS(http);
1802 
1803 const URLProtocol ff_http_protocol = {
1804  .name = "http",
1805  .url_open2 = http_open,
1806  .url_accept = http_accept,
1807  .url_handshake = http_handshake,
1808  .url_read = http_read,
1809  .url_write = http_write,
1810  .url_seek = http_seek,
1811  .url_close = http_close,
1812  .url_get_file_handle = http_get_file_handle,
1813  .url_get_short_seek = http_get_short_seek,
1814  .url_shutdown = http_shutdown,
1815  .priv_data_size = sizeof(HTTPContext),
1816  .priv_data_class = &http_context_class,
1818  .default_whitelist = "http,https,tls,rtp,tcp,udp,crypto,httpproxy,data"
1819 };
1820 #endif /* CONFIG_HTTP_PROTOCOL */
1821 
1822 #if CONFIG_HTTPS_PROTOCOL
1823 HTTP_CLASS(https);
1824 
1826  .name = "https",
1827  .url_open2 = http_open,
1828  .url_read = http_read,
1829  .url_write = http_write,
1830  .url_seek = http_seek,
1831  .url_close = http_close,
1832  .url_get_file_handle = http_get_file_handle,
1833  .url_get_short_seek = http_get_short_seek,
1834  .url_shutdown = http_shutdown,
1835  .priv_data_size = sizeof(HTTPContext),
1836  .priv_data_class = &https_context_class,
1838  .default_whitelist = "http,https,tls,rtp,tcp,udp,crypto,httpproxy"
1839 };
1840 #endif /* CONFIG_HTTPS_PROTOCOL */
1841 
1842 #if CONFIG_HTTPPROXY_PROTOCOL
1843 static int http_proxy_close(URLContext *h)
1844 {
1845  HTTPContext *s = h->priv_data;
1846  if (s->hd)
1847  ffurl_closep(&s->hd);
1848  return 0;
1849 }
1850 
1851 static int http_proxy_open(URLContext *h, const char *uri, int flags)
1852 {
1853  HTTPContext *s = h->priv_data;
1854  char hostname[1024], hoststr[1024];
1855  char auth[1024], pathbuf[1024], *path;
1856  char lower_url[100];
1857  int port, ret = 0, attempts = 0;
1858  HTTPAuthType cur_auth_type;
1859  char *authstr;
1860  int new_loc;
1861 
1862  if( s->seekable == 1 )
1863  h->is_streamed = 0;
1864  else
1865  h->is_streamed = 1;
1866 
1867  av_url_split(NULL, 0, auth, sizeof(auth), hostname, sizeof(hostname), &port,
1868  pathbuf, sizeof(pathbuf), uri);
1869  ff_url_join(hoststr, sizeof(hoststr), NULL, NULL, hostname, port, NULL);
1870  path = pathbuf;
1871  if (*path == '/')
1872  path++;
1873 
1874  ff_url_join(lower_url, sizeof(lower_url), "tcp", NULL, hostname, port,
1875  NULL);
1876 redo:
1877  ret = ffurl_open_whitelist(&s->hd, lower_url, AVIO_FLAG_READ_WRITE,
1878  &h->interrupt_callback, NULL,
1880  if (ret < 0)
1881  return ret;
1882 
1883  authstr = ff_http_auth_create_response(&s->proxy_auth_state, auth,
1884  path, "CONNECT");
1885  snprintf(s->buffer, sizeof(s->buffer),
1886  "CONNECT %s HTTP/1.1\r\n"
1887  "Host: %s\r\n"
1888  "Connection: close\r\n"
1889  "%s%s"
1890  "\r\n",
1891  path,
1892  hoststr,
1893  authstr ? "Proxy-" : "", authstr ? authstr : "");
1894  av_freep(&authstr);
1895 
1896  if ((ret = ffurl_write(s->hd, s->buffer, strlen(s->buffer))) < 0)
1897  goto fail;
1898 
1899  s->buf_ptr = s->buffer;
1900  s->buf_end = s->buffer;
1901  s->line_count = 0;
1902  s->filesize = UINT64_MAX;
1903  cur_auth_type = s->proxy_auth_state.auth_type;
1904 
1905  /* Note: This uses buffering, potentially reading more than the
1906  * HTTP header. If tunneling a protocol where the server starts
1907  * the conversation, we might buffer part of that here, too.
1908  * Reading that requires using the proper ffurl_read() function
1909  * on this URLContext, not using the fd directly (as the tls
1910  * protocol does). This shouldn't be an issue for tls though,
1911  * since the client starts the conversation there, so there
1912  * is no extra data that we might buffer up here.
1913  */
1914  ret = http_read_header(h, &new_loc);
1915  if (ret < 0)
1916  goto fail;
1917 
1918  attempts++;
1919  if (s->http_code == 407 &&
1920  (cur_auth_type == HTTP_AUTH_NONE || s->proxy_auth_state.stale) &&
1921  s->proxy_auth_state.auth_type != HTTP_AUTH_NONE && attempts < 2) {
1922  ffurl_closep(&s->hd);
1923  goto redo;
1924  }
1925 
1926  if (s->http_code < 400)
1927  return 0;
1928  ret = ff_http_averror(s->http_code, AVERROR(EIO));
1929 
1930 fail:
1931  http_proxy_close(h);
1932  return ret;
1933 }
1934 
1935 static int http_proxy_write(URLContext *h, const uint8_t *buf, int size)
1936 {
1937  HTTPContext *s = h->priv_data;
1938  return ffurl_write(s->hd, buf, size);
1939 }
1940 
1942  .name = "httpproxy",
1943  .url_open = http_proxy_open,
1944  .url_read = http_buf_read,
1945  .url_write = http_proxy_write,
1946  .url_close = http_proxy_close,
1947  .url_get_file_handle = http_get_file_handle,
1948  .priv_data_size = sizeof(HTTPContext),
1949  .flags = URL_PROTOCOL_FLAG_NETWORK,
1950 };
1951 #endif /* CONFIG_HTTPPROXY_PROTOCOL */
static int http_get_line(HTTPContext *s, char *line, int line_size)
Definition: http.c:637
time_t av_timegm(struct tm *tm)
Convert the decomposed UTC time in tm to a time_t value.
Definition: parseutils.c:568
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:4802
static void update_metadata(URLContext *h, char *data)
Definition: http.c:1559
static void parse_content_range(URLContext *h, const char *p)
Definition: http.c:690
AVDictionary * metadata
Definition: http.c:110
#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:1217
#define AVERROR_INVALIDDATA
Invalid data found when processing input.
Definition: error.h:59
void av_bprintf(AVBPrint *buf, const char *fmt,...)
Definition: bprint.c:94
version
Definition: libkvazaar.c:292
int size
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:307
#define URL_PROTOCOL_FLAG_NETWORK
Definition: url.h:34
uint8_t * post_data
Definition: http.c:96
AVOption.
Definition: opt.h:246
#define AV_OPT_FLAG_EXPORT
The option is intended for exporting values to the caller.
Definition: opt.h:284
#define AV_OPT_FLAG_DEPRECATED
set if option is deprecated, users should refer to AVOption.help text for more information ...
Definition: opt.h:293
HTTPAuthType
Authentication types, ordered from weakest to strongest.
Definition: httpauth.h:28
#define BUFFER_SIZE
Definition: http.c:49
#define AV_LOG_WARNING
Something somehow does not look correct.
Definition: log.h:182
static int http_close(URLContext *h)
Definition: http.c:1697
else temp
Definition: vf_mcdeint.c:256
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:423
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:74
Definition: http.c:59
#define AVIO_FLAG_READ
read-only
Definition: avio.h:674
char * icy_metadata_headers
Definition: http.c:108
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:675
int av_strncasecmp(const char *a, const char *b, size_t n)
Locale-independent case-insensitive compare.
Definition: avstring.c:223
uint64_t icy_metaint
Definition: http.c:107
#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:217
int flags
Definition: url.h:43
static int http_listen(URLContext *h, const char *uri, int flags, AVDictionary **options)
Definition: http.c:524
char * content_type
Definition: http.c:84
const char * key
uint64_t filesize
Definition: http.c:71
static void error(const char *err)
static int http_getc(HTTPContext *s)
Definition: http.c:620
HTTP Authentication state structure.
Definition: httpauth.h:55
int auth_type
The currently chosen auth type.
Definition: httpauth.h:59
#define WHITESPACES
Definition: http.c:54
int is_connected_server
Definition: http.c:129
#define AV_DICT_DONT_STRDUP_KEY
Take ownership of a key that&#39;s been allocated with av_malloc() or another memory allocation function...
Definition: dict.h:73
#define HTTP_SINGLE
Definition: http.c:51
#define MAX_URL_SIZE
Definition: internal.h:30
static int parse_cookie(HTTPContext *s, const char *p, AVDictionary **cookies)
Definition: http.c:823
#define av_assert0(cond)
assert() equivalent, that is always enabled.
Definition: avassert.h:37
int end_chunked_post
Definition: http.c:91
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:1780
static int http_buf_read(URLContext *h, uint8_t *buf, int size)
Definition: http.c:1383
uint8_t
#define av_malloc(s)
int post_datalen
Definition: http.c:97
AVOptions.
int ff_http_averror(int status_code, int default_averror)
Definition: http.c:391
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:1154
static av_cold int end(AVCodecContext *avctx)
Definition: avrndec.c:92
int is_akamai
Definition: http.c:98
static int http_open_cnx(URLContext *h, AVDictionary **options)
Definition: http.c:262
char * av_small_strptime(const char *p, const char *fmt, struct tm *dt)
Simplified version of strptime.
Definition: parseutils.c:489
void av_bprint_append_data(AVBPrint *buf, const char *data, unsigned size)
Append data to a print buffer.
Definition: bprint.c:158
const char data[16]
Definition: mxf.c:91
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:40
void av_bprint_init_for_buffer(AVBPrint *buf, char *buffer, unsigned size)
Init a print buffer using a pre-existing buffer.
Definition: bprint.c:85
#define NEEDS_ESCAPE(ch)
uint32_t tag
Definition: movenc.c:1532
#define DEFAULT_USER_AGENT
Definition: http.c:135
#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:181
uint64_t icy_data_read
Definition: http.c:105
#define AV_LOG_VERBOSE
Detailed information.
Definition: log.h:192
HTTP 1.0 Basic auth from RFC 1945 (also in RFC 2617)
Definition: httpauth.h:30
static const uint8_t header[24]
Definition: sdr2.c:67
static int http_open_cnx_internal(URLContext *h, AVDictionary **options)
Definition: http.c:191
int ff_http_do_new_request2(URLContext *h, const char *uri, AVDictionary **opts)
Send a new HTTP request, reusing the old connection.
Definition: http.c:337
int line_count
Definition: http.c:66
#define av_log(a,...)
unsigned char * buf_end
Definition: http.c:65
static void body(uint32_t ABCD[4], const uint8_t *src, int nblocks)
Definition: md5.c:101
#define U(x)
Definition: vp56_arith.h:37
#define src
Definition: vp8dsp.c:254
int ff_http_get_shutdown_status(URLContext *h)
Get the HTTP shutdown response status, be used after http_shutdown.
Definition: http.c:317
int is_multi_client
Definition: http.c:127
int chunked_post
Definition: http.c:89
static int64_t http_seek_internal(URLContext *h, int64_t off, int whence, int force_reconnect)
Definition: http.c:1717
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:294
#define i(width, name, range_min, range_max)
Definition: cbs_h2645.c:269
#define AV_LOG_ERROR
Something went wrong and cannot losslessly be recovered.
Definition: log.h:176
int reconnect_delay_max
Definition: http.c:123
#define E
Definition: http.c:134
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:1642
static const AVOption options[]
Definition: http.c:137
unsigned int pos
Definition: spdifenc.c:412
#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:203
static int http_handshake(URLContext *c)
Definition: http.c:488
Definition: graph2dot.c:48
uint64_t off
Definition: http.c:71
simple assert() macros that are a bit more flexible than ISO C assert().
#define OFFSET(x)
Definition: http.c:132
#define fail()
Definition: checkasm.h:123
uint64_t chunksize
Definition: http.c:69
AVDictionary * chained_options
Definition: http.c:116
#define AVERROR_HTTP_SERVER_ERROR
Definition: error.h:81
char * referer
Definition: http.c:80
static void bprint_escaped_path(AVBPrint *bp, const char *path)
Escape unsafe characters in path in order to pass them safely to the HTTP request.
Definition: http.c:1193
char * av_asprintf(const char *fmt,...)
Definition: avstring.c:113
static int store_icy(URLContext *h, int size)
Definition: http.c:1587
AVDictionary * opts
Definition: movenc.c:50
char * headers
Definition: http.c:76
char * user_agent
Definition: http.c:79
#define AVERROR_HTTP_UNAUTHORIZED
Definition: error.h:77
char * icy_metadata_packet
Definition: http.c:109
const char * name
Definition: qsvenc.c:46
int ffurl_get_short_seek(URLContext *h)
Return the current short seek threshold value for this URL.
Definition: avio.c:652
#define FFMIN(a, b)
Definition: common.h:96
static int http_get_short_seek(URLContext *h)
Definition: http.c:1786
const URLProtocol ff_httpproxy_protocol
int av_strcasecmp(const char *a, const char *b)
Locale-independent case-insensitive compare.
Definition: avstring.c:213
int chunkend
Definition: http.c:70
int send_expect_100
Definition: http.c:118
#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 ff_network_sleep_interruptible(int64_t timeout, AVIOInterruptCB *int_cb)
Waits for up to &#39;timeout&#39; microseconds.
Definition: network.c:98
int willclose
Definition: http.c:87
int is_mediagateway
Definition: http.c:99
int ffurl_handshake(URLContext *c)
Perform one step of the protocol handshake to accept a new client.
Definition: avio.c:235
int reconnect
Definition: http.c:120
int ff_http_match_no_proxy(const char *no_proxy, const char *hostname)
Definition: network.c:551
#define s(width, name)
Definition: cbs_vp9.c:257
int 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:319
static int av_bprint_is_complete(const AVBPrint *buf)
Test if the print buffer is complete (not truncated).
Definition: bprint.h:185
int ffurl_get_file_handle(URLContext *h)
Return the file descriptor associated with this URL.
Definition: avio.c:628
int ffurl_accept(URLContext *s, URLContext **c)
Accept an URLContext c on an URLContext s.
Definition: avio.c:227
#define AVERROR_EXIT
Immediate exit was requested; the called function should not be restarted.
Definition: error.h:56
AVDictionary * cookie_dict
Definition: http.c:102
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:446
int64_t av_gettime(void)
Get the current time in microseconds.
Definition: time.c:39
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:38
int reconnect_streamed
Definition: http.c:122
static int http_read(URLContext *h, uint8_t *buf, int size)
Definition: http.c:1625
#define AV_LOG_INFO
Standard information.
Definition: log.h:187
int av_reallocp(void *ptr, size_t size)
Allocate, reallocate, or free a block of memory through a pointer to a pointer.
Definition: mem.c:161
char * av_strdup(const char *s)
Duplicate a string.
Definition: mem.c:253
const char * protocol_blacklist
Definition: url.h:50
char * http_proxy
Definition: http.c:75
int av_opt_set_dict(void *obj, AVDictionary **options)
Set all the options from a given dictionary on an object.
Definition: opt.c:1655
HandshakeState handshake_step
Definition: http.c:128
#define AVIO_FLAG_NONBLOCK
Use non-blocking mode.
Definition: avio.h:693
int seekable
Control seekability, 0 = disable, 1 = enable, -1 = probe.
Definition: http.c:88
long long int64_t
Definition: coverity.c:34
#define MAX_EXPIRY
Definition: http.c:53
Definition: url.h:38
#define AVIO_FLAG_READ_WRITE
read-write pseudo flag
Definition: avio.h:676
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:70
unsigned char buffer[BUFFER_SIZE]
Definition: http.c:65
char * http_version
Definition: http.c:78
double value
Definition: eval.c:98
Describe the class of an AVClass context structure.
Definition: log.h:67
#define SPACE_CHARS
Definition: internal.h:343
static void inflate(uint8_t *dst, const uint8_t *p1, int width, int threshold, const uint8_t *coordinates[], int coord, int maxc)
Definition: vf_neighbor.c:198
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
static av_const int av_isxdigit(int c)
Locale-independent conversion of ASCII isxdigit.
Definition: avstring.h:251
int icy
Definition: http.c:103
misc parsing utilities
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:55
URLContext * hd
Definition: http.c:64
static int has_header(const char *str, const char *header)
Definition: http.c:1146
char * mime_type
Definition: http.c:77
#define SIZE_SPECIFIER
Definition: internal.h:264
#define flags(name, subs,...)
Definition: cbs_av1.c:576
#define AVERROR_HTTP_FORBIDDEN
Definition: error.h:78
int ffurl_close(URLContext *h)
Definition: avio.c:469
static int process_line(URLContext *h, char *line, int line_count, int *new_location)
Definition: http.c:908
int ff_http_do_new_request(URLContext *h, const char *uri)
Send a new HTTP request, reusing the old connection.
Definition: http.c:333
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:100
#define MAX_REDIRECTS
Definition: http.c:50
static int parse_content_encoding(URLContext *h, const char *p)
Definition: http.c:705
const struct URLProtocol * prot
Definition: url.h:40
int reconnect_at_eof
Definition: http.c:121
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:147
HandshakeState
Definition: http.c:55
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:1062
int http_code
Definition: http.c:67
char * filename
specified URL
Definition: url.h:42
int listen
Definition: http.c:124
static int http_open(URLContext *h, const char *uri, int flags, AVDictionary **options)
Definition: http.c:555
#define AVSEEK_SIZE
ORing this as the "whence" parameter to a seek function causes it to return the filesize without seek...
Definition: avio.h:531
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:95
HTTPAuthState auth_state
Definition: http.c:73
#define av_free(p)
static int cookie_string(AVDictionary *dict, char **cookies)
Definition: http.c:885
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:676
char * resource
Definition: http.c:125
char * location
Definition: http.c:72
static int http_shutdown(URLContext *h, int flags)
Definition: http.c:1668
static int http_write_reply(URLContext *h, int status_code)
Definition: http.c:408
#define AV_OPT_FLAG_READONLY
The option may not be set through the AVOptions API, only read.
Definition: opt.h:289
int end_header
Definition: http.c:93
unsigned char * buf_ptr
Definition: http.c:65
#define D
Definition: http.c:133
#define AVERROR_HTTP_BAD_REQUEST
Definition: error.h:76
char * method
Definition: http.c:119
static int parse_icy(HTTPContext *s, const char *tag, const char *p)
Definition: http.c:739
uint64_t end_off
Definition: http.c:71
static int parse_set_cookie_expiry_time(const char *exp_str, struct tm *buf)
Definition: http.c:761
static int http_read_stream(URLContext *h, uint8_t *buf, int size)
Definition: http.c:1491
#define av_freep(p)
static int http_read_stream_all(URLContext *h, uint8_t *buf, int size)
Definition: http.c:1547
#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:482
static int parse_set_cookie(const char *set_cookie, AVDictionary **dict)
Definition: http.c:786
static int64_t http_seek(URLContext *h, int64_t off, int whence)
Definition: http.c:1775
static double val(void *priv, double ch)
Definition: aeval.c:76
int reply_code
Definition: http.c:126
int av_opt_set(void *obj, const char *name, const char *val, int search_flags)
Definition: opt.c:465
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:409
char * av_strndup(const char *s, size_t len)
Duplicate a substring of a string.
Definition: mem.c:265
static int http_accept(URLContext *s, URLContext **c)
Definition: http.c:596
#define HTTP_CLASS(flavor)
Definition: http.c:1792
No authentication specified.
Definition: httpauth.h:29
static int check_http_code(URLContext *h, int http_code, const char *end)
Definition: http.c:661
static uint8_t tmp[11]
Definition: aes_ctr.c:26