FFmpeg coverage

Line	Branch	Exec	Source
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			#include "config_components.h"
24
25			#include <time.h>
26			#if CONFIG_ZLIB
27			#include <zlib.h>
28			#endif /* CONFIG_ZLIB */
29
30			#include "libavutil/avassert.h"
31			#include "libavutil/avstring.h"
32			#include "libavutil/bprint.h"
33			#include "libavutil/getenv_utf8.h"
34			#include "libavutil/macros.h"
35			#include "libavutil/mem.h"
36			#include "libavutil/opt.h"
37			#include "libavutil/time.h"
38			#include "libavutil/parseutils.h"
39
40			#include "avformat.h"
41			#include "http.h"
42			#include "httpauth.h"
43			#include "internal.h"
44			#include "network.h"
45			#include "os_support.h"
46			#include "url.h"
47			#include "version.h"
48
49			/* XXX: POST protocol is not completely implemented because ffmpeg uses
50			* only a subset of it. */
51
52			/* The IO buffer size is unrelated to the max URL size in itself, but needs
53			* to be large enough to fit the full request headers (including long
54			* path names). */
55			#define BUFFER_SIZE (MAX_URL_SIZE + HTTP_HEADERS_SIZE)
56			#define MAX_REDIRECTS 8
57			#define MAX_CACHED_REDIRECTS 32
58			#define HTTP_SINGLE 1
59			#define HTTP_MUTLI 2
60			#define MAX_DATE_LEN 19
61			#define WHITESPACES " \n\t\r"
62			typedef enum {
63			LOWER_PROTO,
64			READ_HEADERS,
65			WRITE_REPLY_HEADERS,
66			FINISH
67			}HandshakeState;
68
69			typedef struct HTTPContext {
70			const AVClass *class;
71			URLContext *hd;
72			unsigned char buffer[BUFFER_SIZE], *buf_ptr, *buf_end;
73			int line_count;
74			int http_code;
75			/* Used if "Transfer-Encoding: chunked" otherwise -1. */
76			uint64_t chunksize;
77			int chunkend;
78			uint64_t off, end_off, filesize;
79			char *uri;
80			char *location;
81			HTTPAuthState auth_state;
82			HTTPAuthState proxy_auth_state;
83			char *http_proxy;
84			char *headers;
85			char *mime_type;
86			char *http_version;
87			char *user_agent;
88			char *referer;
89			char *content_type;
90			/* Set if the server correctly handles Connection: close and will close
91			* the connection after feeding us the content. */
92			int willclose;
93			int seekable; /**< Control seekability, 0 = disable, 1 = enable, -1 = probe. */
94			int chunked_post;
95			/* A flag which indicates if the end of chunked encoding has been sent. */
96			int end_chunked_post;
97			/* A flag which indicates we have finished to read POST reply. */
98			int end_header;
99			/* A flag which indicates if we use persistent connections. */
100			int multiple_requests;
101			uint8_t *post_data;
102			int post_datalen;
103			int is_akamai;
104			int is_mediagateway;
105			char *cookies; ///< holds newline (\n) delimited Set-Cookie header field values (without the "Set-Cookie: " field name)
106			/* A dictionary containing cookies keyed by cookie name */
107			AVDictionary *cookie_dict;
108			int icy;
109			/* how much data was read since the last ICY metadata packet */
110			uint64_t icy_data_read;
111			/* after how many bytes of read data a new metadata packet will be found */
112			uint64_t icy_metaint;
113			char *icy_metadata_headers;
114			char *icy_metadata_packet;
115			AVDictionary *metadata;
116			#if CONFIG_ZLIB
117			int compressed;
118			z_stream inflate_stream;
119			uint8_t *inflate_buffer;
120			#endif /* CONFIG_ZLIB */
121			AVDictionary *chained_options;
122			/* -1 = try to send if applicable, 0 = always disabled, 1 = always enabled */
123			int send_expect_100;
124			char *method;
125			int reconnect;
126			int reconnect_at_eof;
127			int reconnect_on_network_error;
128			int reconnect_streamed;
129			int reconnect_delay_max;
130			char *reconnect_on_http_error;
131			int listen;
132			char *resource;
133			int reply_code;
134			int is_multi_client;
135			HandshakeState handshake_step;
136			int is_connected_server;
137			int short_seek_size;
138			int64_t expires;
139			char *new_location;
140			AVDictionary *redirect_cache;
141			uint64_t filesize_from_content_range;
142			int respect_retry_after;
143			unsigned int retry_after;
144			int reconnect_max_retries;
145			int reconnect_delay_total_max;
146			} HTTPContext;
147
148			#define OFFSET(x) offsetof(HTTPContext, x)
149			#define D AV_OPT_FLAG_DECODING_PARAM
150			#define E AV_OPT_FLAG_ENCODING_PARAM
151			#define DEFAULT_USER_AGENT "Lavf/" AV_STRINGIFY(LIBAVFORMAT_VERSION)
152
153			static const AVOption options[] = {
154			{ "seekable", "control seekability of connection", OFFSET(seekable), AV_OPT_TYPE_BOOL, { .i64 = -1 }, -1, 1, D },
155			{ "chunked_post", "use chunked transfer-encoding for posts", OFFSET(chunked_post), AV_OPT_TYPE_BOOL, { .i64 = 1 }, 0, 1, E },
156			{ "http_proxy", "set HTTP proxy to tunnel through", OFFSET(http_proxy), AV_OPT_TYPE_STRING, { .str = NULL }, 0, 0, D | E },
157			{ "headers", "set custom HTTP headers, can override built in default headers", OFFSET(headers), AV_OPT_TYPE_STRING, { .str = NULL }, 0, 0, D | E },
158			{ "content_type", "set a specific content type for the POST messages", OFFSET(content_type), AV_OPT_TYPE_STRING, { .str = NULL }, 0, 0, D | E },
159			{ "user_agent", "override User-Agent header", OFFSET(user_agent), AV_OPT_TYPE_STRING, { .str = DEFAULT_USER_AGENT }, 0, 0, D },
160			{ "referer", "override referer header", OFFSET(referer), AV_OPT_TYPE_STRING, { .str = NULL }, 0, 0, D },
161			{ "multiple_requests", "use persistent connections", OFFSET(multiple_requests), AV_OPT_TYPE_BOOL, { .i64 = 0 }, 0, 1, D | E },
162			{ "post_data", "set custom HTTP post data", OFFSET(post_data), AV_OPT_TYPE_BINARY, .flags = D | E },
163			{ "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 },
164			{ "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 },
165			{ "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 },
166			{ "icy", "request ICY metadata", OFFSET(icy), AV_OPT_TYPE_BOOL, { .i64 = 1 }, 0, 1, D },
167			{ "icy_metadata_headers", "return ICY metadata headers", OFFSET(icy_metadata_headers), AV_OPT_TYPE_STRING, { .str = NULL }, 0, 0, AV_OPT_FLAG_EXPORT },
168			{ "icy_metadata_packet", "return current ICY metadata packet", OFFSET(icy_metadata_packet), AV_OPT_TYPE_STRING, { .str = NULL }, 0, 0, AV_OPT_FLAG_EXPORT },
169			{ "metadata", "metadata read from the bitstream", OFFSET(metadata), AV_OPT_TYPE_DICT, {0}, 0, 0, AV_OPT_FLAG_EXPORT },
170			{ "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, .unit = "auth_type"},
171			{ "none", "No auth method set, autodetect", 0, AV_OPT_TYPE_CONST, { .i64 = HTTP_AUTH_NONE }, 0, 0, D | E, .unit = "auth_type"},
172			{ "basic", "HTTP basic authentication", 0, AV_OPT_TYPE_CONST, { .i64 = HTTP_AUTH_BASIC }, 0, 0, D | E, .unit = "auth_type"},
173			{ "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 },
174			{ "location", "The actual location of the data received", OFFSET(location), AV_OPT_TYPE_STRING, { .str = NULL }, 0, 0, D | E },
175			{ "offset", "initial byte offset", OFFSET(off), AV_OPT_TYPE_INT64, { .i64 = 0 }, 0, INT64_MAX, D },
176			{ "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 },
177			{ "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 },
178			{ "reconnect", "auto reconnect after disconnect before EOF", OFFSET(reconnect), AV_OPT_TYPE_BOOL, { .i64 = 0 }, 0, 1, D },
179			{ "reconnect_at_eof", "auto reconnect at EOF", OFFSET(reconnect_at_eof), AV_OPT_TYPE_BOOL, { .i64 = 0 }, 0, 1, D },
180			{ "reconnect_on_network_error", "auto reconnect in case of tcp/tls error during connect", OFFSET(reconnect_on_network_error), AV_OPT_TYPE_BOOL, { .i64 = 0 }, 0, 1, D },
181			{ "reconnect_on_http_error", "list of http status codes to reconnect on", OFFSET(reconnect_on_http_error), AV_OPT_TYPE_STRING, { .str = NULL }, 0, 0, D },
182			{ "reconnect_streamed", "auto reconnect streamed / non seekable streams", OFFSET(reconnect_streamed), AV_OPT_TYPE_BOOL, { .i64 = 0 }, 0, 1, D },
183			{ "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 },
184			{ "reconnect_max_retries", "the max number of times to retry a connection", OFFSET(reconnect_max_retries), AV_OPT_TYPE_INT, { .i64 = -1 }, -1, INT_MAX, D },
185			{ "reconnect_delay_total_max", "max total reconnect delay in seconds after which to give up", OFFSET(reconnect_delay_total_max), AV_OPT_TYPE_INT, { .i64 = 256 }, 0, UINT_MAX/1000/1000, D },
186			{ "respect_retry_after", "respect the Retry-After header when retrying connections", OFFSET(respect_retry_after), AV_OPT_TYPE_BOOL, { .i64 = 1 }, 0, 1, D },
187			{ "listen", "listen on HTTP", OFFSET(listen), AV_OPT_TYPE_INT, { .i64 = 0 }, 0, 2, D | E },
188			{ "resource", "The resource requested by a client", OFFSET(resource), AV_OPT_TYPE_STRING, { .str = NULL }, 0, 0, E },
189			{ "reply_code", "The http status code to return to a client", OFFSET(reply_code), AV_OPT_TYPE_INT, { .i64 = 200}, INT_MIN, 599, E},
190			{ "short_seek_size", "Threshold to favor readahead over seek.", OFFSET(short_seek_size), AV_OPT_TYPE_INT, { .i64 = 0 }, 0, INT_MAX, D },
191			{ NULL }
192			};
193
194			static int http_connect(URLContext *h, const char *path, const char *local_path,
195			const char *hoststr, const char *auth,
196			const char *proxyauth);
197			static int http_read_header(URLContext *h);
198			static int http_shutdown(URLContext *h, int flags);
199
200		✗	void ff_http_init_auth_state(URLContext *dest, const URLContext *src)
201			{
202		✗	memcpy(&((HTTPContext *)dest->priv_data)->auth_state,
203		✗	&((HTTPContext *)src->priv_data)->auth_state,
204			sizeof(HTTPAuthState));
205		✗	memcpy(&((HTTPContext *)dest->priv_data)->proxy_auth_state,
206		✗	&((HTTPContext *)src->priv_data)->proxy_auth_state,
207			sizeof(HTTPAuthState));
208		✗	}
209
210		✗	static int http_open_cnx_internal(URLContext *h, AVDictionary **options)
211			{
212		✗	const char *path, *proxy_path, *lower_proto = "tcp", *local_path;
213			char *env_http_proxy, *env_no_proxy;
214			char *hashmark;
215			char hostname[1024], hoststr[1024], proto[10];
216		✗	char auth[1024], proxyauth[1024] = "";
217			char path1[MAX_URL_SIZE], sanitized_path[MAX_URL_SIZE + 1];
218			char buf[1024], urlbuf[MAX_URL_SIZE];
219		✗	int port, use_proxy, err = 0;
220		✗	HTTPContext *s = h->priv_data;
221
222		✗	av_url_split(proto, sizeof(proto), auth, sizeof(auth),
223			hostname, sizeof(hostname), &port,
224		✗	path1, sizeof(path1), s->location);
225		✗	ff_url_join(hoststr, sizeof(hoststr), NULL, NULL, hostname, port, NULL);
226
227		✗	env_http_proxy = getenv_utf8("http_proxy");
228		✗	proxy_path = s->http_proxy ? s->http_proxy : env_http_proxy;
229
230		✗	env_no_proxy = getenv_utf8("no_proxy");
231		✗	use_proxy = !ff_http_match_no_proxy(env_no_proxy, hostname) &&
232		✗	proxy_path && av_strstart(proxy_path, "http://", NULL);
233		✗	freeenv_utf8(env_no_proxy);
234
235		✗	if (!strcmp(proto, "https")) {
236		✗	lower_proto = "tls";
237		✗	use_proxy = 0;
238		✗	if (port < 0)
239		✗	port = 443;
240			/* pass http_proxy to underlying protocol */
241		✗	if (s->http_proxy) {
242		✗	err = av_dict_set(options, "http_proxy", s->http_proxy, 0);
243		✗	if (err < 0)
244		✗	goto end;
245			}
246			}
247		✗	if (port < 0)
248		✗	port = 80;
249
250		✗	hashmark = strchr(path1, '#');
251		✗	if (hashmark)
252		✗	*hashmark = '\0';
253
254		✗	if (path1[0] == '\0') {
255		✗	path = "/";
256		✗	} else if (path1[0] == '?') {
257		✗	snprintf(sanitized_path, sizeof(sanitized_path), "/%s", path1);
258		✗	path = sanitized_path;
259			} else {
260		✗	path = path1;
261			}
262		✗	local_path = path;
263		✗	if (use_proxy) {
264			/* Reassemble the request URL without auth string - we don't
265			* want to leak the auth to the proxy. */
266		✗	ff_url_join(urlbuf, sizeof(urlbuf), proto, NULL, hostname, port, "%s",
267			path1);
268		✗	path = urlbuf;
269		✗	av_url_split(NULL, 0, proxyauth, sizeof(proxyauth),
270			hostname, sizeof(hostname), &port, NULL, 0, proxy_path);
271			}
272
273		✗	ff_url_join(buf, sizeof(buf), lower_proto, NULL, hostname, port, NULL);
274
275		✗	if (!s->hd) {
276		✗	err = ffurl_open_whitelist(&s->hd, buf, AVIO_FLAG_READ_WRITE,
277		✗	&h->interrupt_callback, options,
278			h->protocol_whitelist, h->protocol_blacklist, h);
279			}
280
281		✗	end:
282		✗	freeenv_utf8(env_http_proxy);
283		✗	return err < 0 ? err : http_connect(
284			h, path, local_path, hoststr, auth, proxyauth);
285			}
286
287		✗	static int http_should_reconnect(HTTPContext *s, int err)
288			{
289			const char *status_group;
290			char http_code[4];
291
292		✗	switch (err) {
293		✗	case AVERROR_HTTP_BAD_REQUEST:
294			case AVERROR_HTTP_UNAUTHORIZED:
295			case AVERROR_HTTP_FORBIDDEN:
296			case AVERROR_HTTP_NOT_FOUND:
297			case AVERROR_HTTP_TOO_MANY_REQUESTS:
298			case AVERROR_HTTP_OTHER_4XX:
299		✗	status_group = "4xx";
300		✗	break;
301
302		✗	case AVERROR_HTTP_SERVER_ERROR:
303		✗	status_group = "5xx";
304		✗	break;
305
306		✗	default:
307		✗	return s->reconnect_on_network_error;
308			}
309
310		✗	if (!s->reconnect_on_http_error)
311		✗	return 0;
312
313		✗	if (av_match_list(status_group, s->reconnect_on_http_error, ',') > 0)
314		✗	return 1;
315
316		✗	snprintf(http_code, sizeof(http_code), "%d", s->http_code);
317
318		✗	return av_match_list(http_code, s->reconnect_on_http_error, ',') > 0;
319			}
320
321		✗	static char *redirect_cache_get(HTTPContext *s)
322			{
323			AVDictionaryEntry *re;
324			int64_t expiry;
325			char *delim;
326
327		✗	re = av_dict_get(s->redirect_cache, s->location, NULL, AV_DICT_MATCH_CASE);
328		✗	if (!re) {
329		✗	return NULL;
330			}
331
332		✗	delim = strchr(re->value, ';');
333		✗	if (!delim) {
334		✗	return NULL;
335			}
336
337		✗	expiry = strtoll(re->value, NULL, 10);
338		✗	if (time(NULL) > expiry) {
339		✗	return NULL;
340			}
341
342		✗	return delim + 1;
343			}
344
345		✗	static int redirect_cache_set(HTTPContext *s, const char *source, const char *dest, int64_t expiry)
346			{
347			char *value;
348			int ret;
349
350		✗	value = av_asprintf("%"PRIi64";%s", expiry, dest);
351		✗	if (!value) {
352		✗	return AVERROR(ENOMEM);
353			}
354
355		✗	ret = av_dict_set(&s->redirect_cache, source, value, AV_DICT_MATCH_CASE | AV_DICT_DONT_STRDUP_VAL);
356		✗	if (ret < 0)
357		✗	return ret;
358
359		✗	return 0;
360			}
361
362			/* return non zero if error */
363		✗	static int http_open_cnx(URLContext *h, AVDictionary **options)
364			{
365			HTTPAuthType cur_auth_type, cur_proxy_auth_type;
366		✗	HTTPContext *s = h->priv_data;
367		✗	int ret, conn_attempts = 1, auth_attempts = 0, redirects = 0;
368		✗	int reconnect_delay = 0;
369		✗	int reconnect_delay_total = 0;
370			uint64_t off;
371			char *cached;
372
373		✗	redo:
374
375		✗	cached = redirect_cache_get(s);
376		✗	if (cached) {
377		✗	av_free(s->location);
378		✗	s->location = av_strdup(cached);
379		✗	if (!s->location) {
380		✗	ret = AVERROR(ENOMEM);
381		✗	goto fail;
382			}
383		✗	goto redo;
384			}
385
386		✗	av_dict_copy(options, s->chained_options, 0);
387
388		✗	cur_auth_type = s->auth_state.auth_type;
389		✗	cur_proxy_auth_type = s->auth_state.auth_type;
390
391		✗	off = s->off;
392		✗	ret = http_open_cnx_internal(h, options);
393		✗	if (ret < 0) {
394		✗	if (!http_should_reconnect(s, ret) ||
395		✗	reconnect_delay > s->reconnect_delay_max ||
396		✗	(s->reconnect_max_retries >= 0 && conn_attempts > s->reconnect_max_retries) ||
397		✗	reconnect_delay_total > s->reconnect_delay_total_max)
398		✗	goto fail;
399
400			/* Both fields here are in seconds. */
401		✗	if (s->respect_retry_after && s->retry_after > 0) {
402		✗	reconnect_delay = s->retry_after;
403		✗	if (reconnect_delay > s->reconnect_delay_max)
404		✗	goto fail;
405		✗	s->retry_after = 0;
406			}
407
408		✗	av_log(h, AV_LOG_WARNING, "Will reconnect at %"PRIu64" in %d second(s).\n", off, reconnect_delay);
409		✗	ret = ff_network_sleep_interruptible(1000U * 1000 * reconnect_delay, &h->interrupt_callback);
410		✗	if (ret != AVERROR(ETIMEDOUT))
411		✗	goto fail;
412		✗	reconnect_delay_total += reconnect_delay;
413		✗	reconnect_delay = 1 + 2 * reconnect_delay;
414		✗	conn_attempts++;
415
416			/* restore the offset (http_connect resets it) */
417		✗	s->off = off;
418
419		✗	ffurl_closep(&s->hd);
420		✗	goto redo;
421			}
422
423		✗	auth_attempts++;
424		✗	if (s->http_code == 401) {
425		✗	if ((cur_auth_type == HTTP_AUTH_NONE || s->auth_state.stale) &&
426		✗	s->auth_state.auth_type != HTTP_AUTH_NONE && auth_attempts < 4) {
427		✗	ffurl_closep(&s->hd);
428		✗	goto redo;
429			} else
430		✗	goto fail;
431			}
432		✗	if (s->http_code == 407) {
433		✗	if ((cur_proxy_auth_type == HTTP_AUTH_NONE || s->proxy_auth_state.stale) &&
434		✗	s->proxy_auth_state.auth_type != HTTP_AUTH_NONE && auth_attempts < 4) {
435		✗	ffurl_closep(&s->hd);
436		✗	goto redo;
437			} else
438		✗	goto fail;
439			}
440		✗	if ((s->http_code == 301 || s->http_code == 302 ||
441		✗	s->http_code == 303 || s->http_code == 307 || s->http_code == 308) &&
442		✗	s->new_location) {
443			/* url moved, get next */
444		✗	ffurl_closep(&s->hd);
445		✗	if (redirects++ >= MAX_REDIRECTS)
446		✗	return AVERROR(EIO);
447
448		✗	if (!s->expires) {
449		✗	s->expires = (s->http_code == 301 || s->http_code == 308) ? INT64_MAX : -1;
450			}
451
452		✗	if (s->expires > time(NULL) && av_dict_count(s->redirect_cache) < MAX_CACHED_REDIRECTS) {
453		✗	redirect_cache_set(s, s->location, s->new_location, s->expires);
454			}
455
456		✗	av_free(s->location);
457		✗	s->location = s->new_location;
458		✗	s->new_location = NULL;
459
460			/* Restart the authentication process with the new target, which
461			* might use a different auth mechanism. */
462		✗	memset(&s->auth_state, 0, sizeof(s->auth_state));
463		✗	auth_attempts = 0;
464		✗	goto redo;
465			}
466		✗	return 0;
467
468		✗	fail:
469		✗	if (s->hd)
470		✗	ffurl_closep(&s->hd);
471		✗	if (ret < 0)
472		✗	return ret;
473		✗	return ff_http_averror(s->http_code, AVERROR(EIO));
474			}
475
476		✗	int ff_http_do_new_request(URLContext *h, const char *uri) {
477		✗	return ff_http_do_new_request2(h, uri, NULL);
478			}
479
480		✗	int ff_http_do_new_request2(URLContext *h, const char *uri, AVDictionary **opts)
481			{
482		✗	HTTPContext *s = h->priv_data;
483		✗	AVDictionary *options = NULL;
484			int ret;
485			char hostname1[1024], hostname2[1024], proto1[10], proto2[10];
486			int port1, port2;
487
488		✗	if (!h->prot ||
489		✗	!(!strcmp(h->prot->name, "http") ||
490		✗	!strcmp(h->prot->name, "https")))
491		✗	return AVERROR(EINVAL);
492
493		✗	av_url_split(proto1, sizeof(proto1), NULL, 0,
494			hostname1, sizeof(hostname1), &port1,
495		✗	NULL, 0, s->location);
496		✗	av_url_split(proto2, sizeof(proto2), NULL, 0,
497			hostname2, sizeof(hostname2), &port2,
498			NULL, 0, uri);
499		✗	if (port1 != port2 || strncmp(hostname1, hostname2, sizeof(hostname2)) != 0) {
500		✗	av_log(h, AV_LOG_ERROR, "Cannot reuse HTTP connection for different host: %s:%d != %s:%d\n",
501			hostname1, port1,
502			hostname2, port2
503			);
504		✗	return AVERROR(EINVAL);
505			}
506
507		✗	if (!s->end_chunked_post) {
508		✗	ret = http_shutdown(h, h->flags);
509		✗	if (ret < 0)
510		✗	return ret;
511			}
512
513		✗	if (s->willclose)
514		✗	return AVERROR_EOF;
515
516		✗	s->end_chunked_post = 0;
517		✗	s->chunkend = 0;
518		✗	s->off = 0;
519		✗	s->icy_data_read = 0;
520
521		✗	av_free(s->location);
522		✗	s->location = av_strdup(uri);
523		✗	if (!s->location)
524		✗	return AVERROR(ENOMEM);
525
526		✗	av_free(s->uri);
527		✗	s->uri = av_strdup(uri);
528		✗	if (!s->uri)
529		✗	return AVERROR(ENOMEM);
530
531		✗	if ((ret = av_opt_set_dict(s, opts)) < 0)
532		✗	return ret;
533
534		✗	av_log(s, AV_LOG_INFO, "Opening \'%s\' for %s\n", uri, h->flags & AVIO_FLAG_WRITE ? "writing" : "reading");
535		✗	ret = http_open_cnx(h, &options);
536		✗	av_dict_free(&options);
537		✗	return ret;
538			}
539
540		✗	int ff_http_averror(int status_code, int default_averror)
541			{
542		✗	switch (status_code) {
543		✗	case 400: return AVERROR_HTTP_BAD_REQUEST;
544		✗	case 401: return AVERROR_HTTP_UNAUTHORIZED;
545		✗	case 403: return AVERROR_HTTP_FORBIDDEN;
546		✗	case 404: return AVERROR_HTTP_NOT_FOUND;
547		✗	case 429: return AVERROR_HTTP_TOO_MANY_REQUESTS;
548		✗	default: break;
549			}
550		✗	if (status_code >= 400 && status_code <= 499)
551		✗	return AVERROR_HTTP_OTHER_4XX;
552		✗	else if (status_code >= 500)
553		✗	return AVERROR_HTTP_SERVER_ERROR;
554			else
555		✗	return default_averror;
556			}
557
558		✗	static int http_write_reply(URLContext* h, int status_code)
559			{
560		✗	int ret, body = 0, reply_code, message_len;
561			const char *reply_text, *content_type;
562		✗	HTTPContext *s = h->priv_data;
563			char message[BUFFER_SIZE];
564		✗	content_type = "text/plain";
565
566		✗	if (status_code < 0)
567		✗	body = 1;
568		✗	switch (status_code) {
569		✗	case AVERROR_HTTP_BAD_REQUEST:
570			case 400:
571		✗	reply_code = 400;
572		✗	reply_text = "Bad Request";
573		✗	break;
574		✗	case AVERROR_HTTP_FORBIDDEN:
575			case 403:
576		✗	reply_code = 403;
577		✗	reply_text = "Forbidden";
578		✗	break;
579		✗	case AVERROR_HTTP_NOT_FOUND:
580			case 404:
581		✗	reply_code = 404;
582		✗	reply_text = "Not Found";
583		✗	break;
584		✗	case AVERROR_HTTP_TOO_MANY_REQUESTS:
585			case 429:
586		✗	reply_code = 429;
587		✗	reply_text = "Too Many Requests";
588		✗	break;
589		✗	case 200:
590		✗	reply_code = 200;
591		✗	reply_text = "OK";
592		✗	content_type = s->content_type ? s->content_type : "application/octet-stream";
593		✗	break;
594		✗	case AVERROR_HTTP_SERVER_ERROR:
595			case 500:
596		✗	reply_code = 500;
597		✗	reply_text = "Internal server error";
598		✗	break;
599		✗	default:
600		✗	return AVERROR(EINVAL);
601			}
602		✗	if (body) {
603		✗	s->chunked_post = 0;
604		✗	message_len = snprintf(message, sizeof(message),
605			"HTTP/1.1 %03d %s\r\n"
606			"Content-Type: %s\r\n"
607			"Content-Length: %"SIZE_SPECIFIER"\r\n"
608			"%s"
609			"\r\n"
610			"%03d %s\r\n",
611			reply_code,
612			reply_text,
613			content_type,
614		✗	strlen(reply_text) + 6, // 3 digit status code + space + \r\n
615		✗	s->headers ? s->headers : "",
616			reply_code,
617			reply_text);
618			} else {
619		✗	s->chunked_post = 1;
620		✗	message_len = snprintf(message, sizeof(message),
621			"HTTP/1.1 %03d %s\r\n"
622			"Content-Type: %s\r\n"
623			"Transfer-Encoding: chunked\r\n"
624			"%s"
625			"\r\n",
626			reply_code,
627			reply_text,
628			content_type,
629		✗	s->headers ? s->headers : "");
630			}
631		✗	av_log(h, AV_LOG_TRACE, "HTTP reply header: \n%s----\n", message);
632		✗	if ((ret = ffurl_write(s->hd, message, message_len)) < 0)
633		✗	return ret;
634		✗	return 0;
635			}
636
637		✗	static void handle_http_errors(URLContext *h, int error)
638			{
639		✗	av_assert0(error < 0);
640		✗	http_write_reply(h, error);
641		✗	}
642
643		✗	static int http_handshake(URLContext *c)
644			{
645			int ret, err;
646		✗	HTTPContext *ch = c->priv_data;
647		✗	URLContext *cl = ch->hd;
648		✗	switch (ch->handshake_step) {
649		✗	case LOWER_PROTO:
650		✗	av_log(c, AV_LOG_TRACE, "Lower protocol\n");
651		✗	if ((ret = ffurl_handshake(cl)) > 0)
652		✗	return 2 + ret;
653		✗	if (ret < 0)
654		✗	return ret;
655		✗	ch->handshake_step = READ_HEADERS;
656		✗	ch->is_connected_server = 1;
657		✗	return 2;
658		✗	case READ_HEADERS:
659		✗	av_log(c, AV_LOG_TRACE, "Read headers\n");
660		✗	if ((err = http_read_header(c)) < 0) {
661		✗	handle_http_errors(c, err);
662		✗	return err;
663			}
664		✗	ch->handshake_step = WRITE_REPLY_HEADERS;
665		✗	return 1;
666		✗	case WRITE_REPLY_HEADERS:
667		✗	av_log(c, AV_LOG_TRACE, "Reply code: %d\n", ch->reply_code);
668		✗	if ((err = http_write_reply(c, ch->reply_code)) < 0)
669		✗	return err;
670		✗	ch->handshake_step = FINISH;
671		✗	return 1;
672		✗	case FINISH:
673		✗	return 0;
674			}
675			// this should never be reached.
676		✗	return AVERROR(EINVAL);
677			}
678
679		✗	static int http_listen(URLContext *h, const char *uri, int flags,
680			AVDictionary **options) {
681		✗	HTTPContext *s = h->priv_data;
682			int ret;
683			char hostname[1024], proto[10];
684			char lower_url[100];
685		✗	const char *lower_proto = "tcp";
686			int port;
687		✗	av_url_split(proto, sizeof(proto), NULL, 0, hostname, sizeof(hostname), &port,
688			NULL, 0, uri);
689		✗	if (!strcmp(proto, "https"))
690		✗	lower_proto = "tls";
691		✗	ff_url_join(lower_url, sizeof(lower_url), lower_proto, NULL, hostname, port,
692			NULL);
693		✗	if ((ret = av_dict_set_int(options, "listen", s->listen, 0)) < 0)
694		✗	goto fail;
695		✗	if ((ret = ffurl_open_whitelist(&s->hd, lower_url, AVIO_FLAG_READ_WRITE,
696		✗	&h->interrupt_callback, options,
697			h->protocol_whitelist, h->protocol_blacklist, h
698			)) < 0)
699		✗	goto fail;
700		✗	s->handshake_step = LOWER_PROTO;
701		✗	if (s->listen == HTTP_SINGLE) { /* single client */
702		✗	s->reply_code = 200;
703		✗	while ((ret = http_handshake(h)) > 0);
704			}
705		✗	fail:
706		✗	av_dict_free(&s->chained_options);
707		✗	av_dict_free(&s->cookie_dict);
708		✗	return ret;
709			}
710
711		✗	static int http_open(URLContext *h, const char *uri, int flags,
712			AVDictionary **options)
713			{
714		✗	HTTPContext *s = h->priv_data;
715			int ret;
716
717		✗	if( s->seekable == 1 )
718		✗	h->is_streamed = 0;
719			else
720		✗	h->is_streamed = 1;
721
722		✗	s->filesize = UINT64_MAX;
723
724		✗	s->location = av_strdup(uri);
725		✗	if (!s->location)
726		✗	return AVERROR(ENOMEM);
727
728		✗	s->uri = av_strdup(uri);
729		✗	if (!s->uri)
730		✗	return AVERROR(ENOMEM);
731
732		✗	if (options)
733		✗	av_dict_copy(&s->chained_options, *options, 0);
734
735		✗	if (s->headers) {
736		✗	int len = strlen(s->headers);
737		✗	if (len < 2 || strcmp("\r\n", s->headers + len - 2)) {
738		✗	av_log(h, AV_LOG_WARNING,
739			"No trailing CRLF found in HTTP header. Adding it.\n");
740		✗	ret = av_reallocp(&s->headers, len + 3);
741		✗	if (ret < 0)
742		✗	goto bail_out;
743		✗	s->headers[len] = '\r';
744		✗	s->headers[len + 1] = '\n';
745		✗	s->headers[len + 2] = '\0';
746			}
747			}
748
749		✗	if (s->listen) {
750		✗	return http_listen(h, uri, flags, options);
751			}
752		✗	ret = http_open_cnx(h, options);
753		✗	bail_out:
754		✗	if (ret < 0) {
755		✗	av_dict_free(&s->chained_options);
756		✗	av_dict_free(&s->cookie_dict);
757		✗	av_dict_free(&s->redirect_cache);
758		✗	av_freep(&s->new_location);
759		✗	av_freep(&s->uri);
760			}
761		✗	return ret;
762			}
763
764		✗	static int http_accept(URLContext *s, URLContext **c)
765			{
766			int ret;
767		✗	HTTPContext *sc = s->priv_data;
768			HTTPContext *cc;
769		✗	URLContext *sl = sc->hd;
770		✗	URLContext *cl = NULL;
771
772		✗	av_assert0(sc->listen);
773		✗	if ((ret = ffurl_alloc(c, s->filename, s->flags, &sl->interrupt_callback)) < 0)
774		✗	goto fail;
775		✗	cc = (*c)->priv_data;
776		✗	if ((ret = ffurl_accept(sl, &cl)) < 0)
777		✗	goto fail;
778		✗	cc->hd = cl;
779		✗	cc->is_multi_client = 1;
780		✗	return 0;
781		✗	fail:
782		✗	if (c) {
783		✗	ffurl_closep(c);
784			}
785		✗	return ret;
786			}
787
788		✗	static int http_getc(HTTPContext *s)
789			{
790			int len;
791		✗	if (s->buf_ptr >= s->buf_end) {
792		✗	len = ffurl_read(s->hd, s->buffer, BUFFER_SIZE);
793		✗	if (len < 0) {
794		✗	return len;
795		✗	} else if (len == 0) {
796		✗	return AVERROR_EOF;
797			} else {
798		✗	s->buf_ptr = s->buffer;
799		✗	s->buf_end = s->buffer + len;
800			}
801			}
802		✗	return *s->buf_ptr++;
803			}
804
805		✗	static int http_get_line(HTTPContext *s, char *line, int line_size)
806			{
807			int ch;
808			char *q;
809
810		✗	q = line;
811			for (;;) {
812		✗	ch = http_getc(s);
813		✗	if (ch < 0)
814		✗	return ch;
815		✗	if (ch == '\n') {
816			/* process line */
817		✗	if (q > line && q[-1] == '\r')
818		✗	q--;
819		✗	*q = '\0';
820
821		✗	return 0;
822			} else {
823		✗	if ((q - line) < line_size - 1)
824		✗	*q++ = ch;
825			}
826			}
827			}
828
829		✗	static int check_http_code(URLContext *h, int http_code, const char *end)
830			{
831		✗	HTTPContext *s = h->priv_data;
832			/* error codes are 4xx and 5xx, but regard 401 as a success, so we
833			* don't abort until all headers have been parsed. */
834		✗	if (http_code >= 400 && http_code < 600 &&
835		✗	(http_code != 401 || s->auth_state.auth_type != HTTP_AUTH_NONE) &&
836		✗	(http_code != 407 || s->proxy_auth_state.auth_type != HTTP_AUTH_NONE)) {
837		✗	end += strspn(end, SPACE_CHARS);
838		✗	av_log(h, AV_LOG_WARNING, "HTTP error %d %s\n", http_code, end);
839		✗	return ff_http_averror(http_code, AVERROR(EIO));
840			}
841		✗	return 0;
842			}
843
844		✗	static int parse_location(HTTPContext *s, const char *p)
845			{
846			char redirected_location[MAX_URL_SIZE];
847		✗	ff_make_absolute_url(redirected_location, sizeof(redirected_location),
848		✗	s->location, p);
849		✗	av_freep(&s->new_location);
850		✗	s->new_location = av_strdup(redirected_location);
851		✗	if (!s->new_location)
852		✗	return AVERROR(ENOMEM);
853		✗	return 0;
854			}
855
856			/* "bytes $from-$to/$document_size" */
857		✗	static void parse_content_range(URLContext *h, const char *p)
858			{
859		✗	HTTPContext *s = h->priv_data;
860			const char *slash;
861
862		✗	if (!strncmp(p, "bytes ", 6)) {
863		✗	p += 6;
864		✗	s->off = strtoull(p, NULL, 10);
865		✗	if ((slash = strchr(p, '/')) && strlen(slash) > 0)
866		✗	s->filesize_from_content_range = strtoull(slash + 1, NULL, 10);
867			}
868		✗	if (s->seekable == -1 && (!s->is_akamai || s->filesize != 2147483647))
869		✗	h->is_streamed = 0; /* we _can_ in fact seek */
870		✗	}
871
872		✗	static int parse_content_encoding(URLContext *h, const char *p)
873			{
874		✗	if (!av_strncasecmp(p, "gzip", 4) ||
875		✗	!av_strncasecmp(p, "deflate", 7)) {
876			#if CONFIG_ZLIB
877		✗	HTTPContext *s = h->priv_data;
878
879		✗	s->compressed = 1;
880		✗	inflateEnd(&s->inflate_stream);
881		✗	if (inflateInit2(&s->inflate_stream, 32 + 15) != Z_OK) {
882		✗	av_log(h, AV_LOG_WARNING, "Error during zlib initialisation: %s\n",
883			s->inflate_stream.msg);
884		✗	return AVERROR(ENOSYS);
885			}
886		✗	if (zlibCompileFlags() & (1 << 17)) {
887		✗	av_log(h, AV_LOG_WARNING,
888			"Your zlib was compiled without gzip support.\n");
889		✗	return AVERROR(ENOSYS);
890			}
891			#else
892			av_log(h, AV_LOG_WARNING,
893			"Compressed (%s) content, need zlib with gzip support\n", p);
894			return AVERROR(ENOSYS);
895			#endif /* CONFIG_ZLIB */
896		✗	} else if (!av_strncasecmp(p, "identity", 8)) {
897			// The normal, no-encoding case (although servers shouldn't include
898			// the header at all if this is the case).
899			} else {
900		✗	av_log(h, AV_LOG_WARNING, "Unknown content coding: %s\n", p);
901			}
902		✗	return 0;
903			}
904
905			// Concat all Icy- header lines
906		✗	static int parse_icy(HTTPContext *s, const char *tag, const char *p)
907			{
908		✗	int len = 4 + strlen(p) + strlen(tag);
909		✗	int is_first = !s->icy_metadata_headers;
910			int ret;
911
912		✗	av_dict_set(&s->metadata, tag, p, 0);
913
914		✗	if (s->icy_metadata_headers)
915		✗	len += strlen(s->icy_metadata_headers);
916
917		✗	if ((ret = av_reallocp(&s->icy_metadata_headers, len)) < 0)
918		✗	return ret;
919
920		✗	if (is_first)
921		✗	*s->icy_metadata_headers = '\0';
922
923		✗	av_strlcatf(s->icy_metadata_headers, len, "%s: %s\n", tag, p);
924
925		✗	return 0;
926			}
927
928		✗	static int parse_http_date(const char *date_str, struct tm *buf)
929			{
930			char date_buf[MAX_DATE_LEN];
931		✗	int i, j, date_buf_len = MAX_DATE_LEN-1;
932			char *date;
933
934			// strip off any punctuation or whitespace
935		✗	for (i = 0, j = 0; date_str[i] != '\0' && j < date_buf_len; i++) {
936		✗	if ((date_str[i] >= '0' && date_str[i] <= '9') ||
937		✗	(date_str[i] >= 'A' && date_str[i] <= 'Z') ||
938		✗	(date_str[i] >= 'a' && date_str[i] <= 'z')) {
939		✗	date_buf[j] = date_str[i];
940		✗	j++;
941			}
942			}
943		✗	date_buf[j] = '\0';
944		✗	date = date_buf;
945
946			// move the string beyond the day of week
947		✗	while ((*date < '0' || *date > '9') && *date != '\0')
948		✗	date++;
949
950		✗	return av_small_strptime(date, "%d%b%Y%H%M%S", buf) ? 0 : AVERROR(EINVAL);
951			}
952
953		✗	static int parse_set_cookie(const char *set_cookie, AVDictionary **dict)
954			{
955			char *param, *next_param, *cstr, *back;
956		✗	char *saveptr = NULL;
957
958		✗	if (!set_cookie[0])
959		✗	return 0;
960
961		✗	if (!(cstr = av_strdup(set_cookie)))
962		✗	return AVERROR(EINVAL);
963
964			// strip any trailing whitespace
965		✗	back = &cstr[strlen(cstr)-1];
966		✗	while (strchr(WHITESPACES, *back)) {
967		✗	*back='\0';
968		✗	if (back == cstr)
969		✗	break;
970		✗	back--;
971			}
972
973		✗	next_param = cstr;
974		✗	while ((param = av_strtok(next_param, ";", &saveptr))) {
975			char *name, *value;
976		✗	next_param = NULL;
977		✗	param += strspn(param, WHITESPACES);
978		✗	if ((name = av_strtok(param, "=", &value))) {
979		✗	if (av_dict_set(dict, name, value, 0) < 0) {
980		✗	av_free(cstr);
981		✗	return -1;
982			}
983			}
984			}
985
986		✗	av_free(cstr);
987		✗	return 0;
988			}
989
990		✗	static int parse_cookie(HTTPContext *s, const char *p, AVDictionary **cookies)
991			{
992		✗	AVDictionary *new_params = NULL;
993			const AVDictionaryEntry *e, *cookie_entry;
994			char *eql, *name;
995
996			// ensure the cookie is parsable
997		✗	if (parse_set_cookie(p, &new_params))
998		✗	return -1;
999
1000			// if there is no cookie value there is nothing to parse
1001		✗	cookie_entry = av_dict_iterate(new_params, NULL);
1002		✗	if (!cookie_entry || !cookie_entry->value) {
1003		✗	av_dict_free(&new_params);
1004		✗	return -1;
1005			}
1006
1007			// ensure the cookie is not expired or older than an existing value
1008		✗	if ((e = av_dict_get(new_params, "expires", NULL, 0)) && e->value) {
1009		✗	struct tm new_tm = {0};
1010		✗	if (!parse_http_date(e->value, &new_tm)) {
1011			AVDictionaryEntry *e2;
1012
1013			// if the cookie has already expired ignore it
1014		✗	if (av_timegm(&new_tm) < av_gettime() / 1000000) {
1015		✗	av_dict_free(&new_params);
1016		✗	return 0;
1017			}
1018
1019			// only replace an older cookie with the same name
1020		✗	e2 = av_dict_get(*cookies, cookie_entry->key, NULL, 0);
1021		✗	if (e2 && e2->value) {
1022		✗	AVDictionary *old_params = NULL;
1023		✗	if (!parse_set_cookie(p, &old_params)) {
1024		✗	e2 = av_dict_get(old_params, "expires", NULL, 0);
1025		✗	if (e2 && e2->value) {
1026		✗	struct tm old_tm = {0};
1027		✗	if (!parse_http_date(e->value, &old_tm)) {
1028		✗	if (av_timegm(&new_tm) < av_timegm(&old_tm)) {
1029		✗	av_dict_free(&new_params);
1030		✗	av_dict_free(&old_params);
1031		✗	return -1;
1032			}
1033			}
1034			}
1035			}
1036		✗	av_dict_free(&old_params);
1037			}
1038			}
1039			}
1040		✗	av_dict_free(&new_params);
1041
1042			// duplicate the cookie name (dict will dupe the value)
1043		✗	if (!(eql = strchr(p, '='))) return AVERROR(EINVAL);
1044		✗	if (!(name = av_strndup(p, eql - p))) return AVERROR(ENOMEM);
1045
1046			// add the cookie to the dictionary
1047		✗	av_dict_set(cookies, name, eql, AV_DICT_DONT_STRDUP_KEY);
1048
1049		✗	return 0;
1050			}
1051
1052		✗	static int cookie_string(AVDictionary *dict, char **cookies)
1053			{
1054		✗	const AVDictionaryEntry *e = NULL;
1055		✗	int len = 1;
1056
1057			// determine how much memory is needed for the cookies string
1058		✗	while ((e = av_dict_iterate(dict, e)))
1059		✗	len += strlen(e->key) + strlen(e->value) + 1;
1060
1061			// reallocate the cookies
1062		✗	e = NULL;
1063		✗	if (*cookies) av_free(*cookies);
1064		✗	*cookies = av_malloc(len);
1065		✗	if (!*cookies) return AVERROR(ENOMEM);
1066		✗	*cookies[0] = '\0';
1067
1068			// write out the cookies
1069		✗	while ((e = av_dict_iterate(dict, e)))
1070		✗	av_strlcatf(*cookies, len, "%s%s\n", e->key, e->value);
1071
1072		✗	return 0;
1073			}
1074
1075		✗	static void parse_expires(HTTPContext *s, const char *p)
1076			{
1077			struct tm tm;
1078
1079		✗	if (!parse_http_date(p, &tm)) {
1080		✗	s->expires = av_timegm(&tm);
1081			}
1082		✗	}
1083
1084		✗	static void parse_cache_control(HTTPContext *s, const char *p)
1085			{
1086			char *age;
1087			int offset;
1088
1089			/* give 'Expires' higher priority over 'Cache-Control' */
1090		✗	if (s->expires) {
1091		✗	return;
1092			}
1093
1094		✗	if (av_stristr(p, "no-cache") || av_stristr(p, "no-store")) {
1095		✗	s->expires = -1;
1096		✗	return;
1097			}
1098
1099		✗	age = av_stristr(p, "s-maxage=");
1100		✗	offset = 9;
1101		✗	if (!age) {
1102		✗	age = av_stristr(p, "max-age=");
1103		✗	offset = 8;
1104			}
1105
1106		✗	if (age) {
1107		✗	s->expires = time(NULL) + atoi(p + offset);
1108			}
1109			}
1110
1111		✗	static int process_line(URLContext *h, char *line, int line_count, int *parsed_http_code)
1112			{
1113		✗	HTTPContext *s = h->priv_data;
1114		✗	const char *auto_method = h->flags & AVIO_FLAG_READ ? "POST" : "GET";
1115			char *tag, *p, *end, *method, *resource, *version;
1116			int ret;
1117
1118			/* end of header */
1119		✗	if (line[0] == '\0') {
1120		✗	s->end_header = 1;
1121		✗	return 0;
1122			}
1123
1124		✗	p = line;
1125		✗	if (line_count == 0) {
1126		✗	if (s->is_connected_server) {
1127			// HTTP method
1128		✗	method = p;
1129		✗	while (*p && !av_isspace(*p))
1130		✗	p++;
1131		✗	*(p++) = '\0';
1132		✗	av_log(h, AV_LOG_TRACE, "Received method: %s\n", method);
1133		✗	if (s->method) {
1134		✗	if (av_strcasecmp(s->method, method)) {
1135		✗	av_log(h, AV_LOG_ERROR, "Received and expected HTTP method do not match. (%s expected, %s received)\n",
1136			s->method, method);
1137		✗	return ff_http_averror(400, AVERROR(EIO));
1138			}
1139			} else {
1140			// use autodetected HTTP method to expect
1141		✗	av_log(h, AV_LOG_TRACE, "Autodetected %s HTTP method\n", auto_method);
1142		✗	if (av_strcasecmp(auto_method, method)) {
1143		✗	av_log(h, AV_LOG_ERROR, "Received and autodetected HTTP method did not match "
1144			"(%s autodetected %s received)\n", auto_method, method);
1145		✗	return ff_http_averror(400, AVERROR(EIO));
1146			}
1147		✗	if (!(s->method = av_strdup(method)))
1148		✗	return AVERROR(ENOMEM);
1149			}
1150
1151			// HTTP resource
1152		✗	while (av_isspace(*p))
1153		✗	p++;
1154		✗	resource = p;
1155		✗	while (*p && !av_isspace(*p))
1156		✗	p++;
1157		✗	*(p++) = '\0';
1158		✗	av_log(h, AV_LOG_TRACE, "Requested resource: %s\n", resource);
1159		✗	if (!(s->resource = av_strdup(resource)))
1160		✗	return AVERROR(ENOMEM);
1161
1162			// HTTP version
1163		✗	while (av_isspace(*p))
1164		✗	p++;
1165		✗	version = p;
1166		✗	while (*p && !av_isspace(*p))
1167		✗	p++;
1168		✗	*p = '\0';
1169		✗	if (av_strncasecmp(version, "HTTP/", 5)) {
1170		✗	av_log(h, AV_LOG_ERROR, "Malformed HTTP version string.\n");
1171		✗	return ff_http_averror(400, AVERROR(EIO));
1172			}
1173		✗	av_log(h, AV_LOG_TRACE, "HTTP version string: %s\n", version);
1174			} else {
1175		✗	if (av_strncasecmp(p, "HTTP/1.0", 8) == 0)
1176		✗	s->willclose = 1;
1177		✗	while (*p != '/' && *p != '\0')
1178		✗	p++;
1179		✗	while (*p == '/')
1180		✗	p++;
1181		✗	av_freep(&s->http_version);
1182		✗	s->http_version = av_strndup(p, 3);
1183		✗	while (!av_isspace(*p) && *p != '\0')
1184		✗	p++;
1185		✗	while (av_isspace(*p))
1186		✗	p++;
1187		✗	s->http_code = strtol(p, &end, 10);
1188
1189		✗	av_log(h, AV_LOG_TRACE, "http_code=%d\n", s->http_code);
1190
1191		✗	*parsed_http_code = 1;
1192
1193		✗	if ((ret = check_http_code(h, s->http_code, end)) < 0)
1194		✗	return ret;
1195			}
1196			} else {
1197		✗	while (*p != '\0' && *p != ':')
1198		✗	p++;
1199		✗	if (*p != ':')
1200		✗	return 1;
1201
1202		✗	*p = '\0';
1203		✗	tag = line;
1204		✗	p++;
1205		✗	while (av_isspace(*p))
1206		✗	p++;
1207		✗	if (!av_strcasecmp(tag, "Location")) {
1208		✗	if ((ret = parse_location(s, p)) < 0)
1209		✗	return ret;
1210		✗	} else if (!av_strcasecmp(tag, "Content-Length") &&
1211		✗	s->filesize == UINT64_MAX) {
1212		✗	s->filesize = strtoull(p, NULL, 10);
1213		✗	} else if (!av_strcasecmp(tag, "Content-Range")) {
1214		✗	parse_content_range(h, p);
1215		✗	} else if (!av_strcasecmp(tag, "Accept-Ranges") &&
1216		✗	!strncmp(p, "bytes", 5) &&
1217		✗	s->seekable == -1) {
1218		✗	h->is_streamed = 0;
1219		✗	} else if (!av_strcasecmp(tag, "Transfer-Encoding") &&
1220		✗	!av_strncasecmp(p, "chunked", 7)) {
1221		✗	s->filesize = UINT64_MAX;
1222		✗	s->chunksize = 0;
1223		✗	} else if (!av_strcasecmp(tag, "WWW-Authenticate")) {
1224		✗	ff_http_auth_handle_header(&s->auth_state, tag, p);
1225		✗	} else if (!av_strcasecmp(tag, "Authentication-Info")) {
1226		✗	ff_http_auth_handle_header(&s->auth_state, tag, p);
1227		✗	} else if (!av_strcasecmp(tag, "Proxy-Authenticate")) {
1228		✗	ff_http_auth_handle_header(&s->proxy_auth_state, tag, p);
1229		✗	} else if (!av_strcasecmp(tag, "Connection")) {
1230		✗	if (!strcmp(p, "close"))
1231		✗	s->willclose = 1;
1232		✗	} else if (!av_strcasecmp(tag, "Server")) {
1233		✗	if (!av_strcasecmp(p, "AkamaiGHost")) {
1234		✗	s->is_akamai = 1;
1235		✗	} else if (!av_strncasecmp(p, "MediaGateway", 12)) {
1236		✗	s->is_mediagateway = 1;
1237			}
1238		✗	} else if (!av_strcasecmp(tag, "Content-Type")) {
1239		✗	av_free(s->mime_type);
1240		✗	s->mime_type = av_get_token((const char **)&p, ";");
1241		✗	} else if (!av_strcasecmp(tag, "Set-Cookie")) {
1242		✗	if (parse_cookie(s, p, &s->cookie_dict))
1243		✗	av_log(h, AV_LOG_WARNING, "Unable to parse '%s'\n", p);
1244		✗	} else if (!av_strcasecmp(tag, "Icy-MetaInt")) {
1245		✗	s->icy_metaint = strtoull(p, NULL, 10);
1246		✗	} else if (!av_strncasecmp(tag, "Icy-", 4)) {
1247		✗	if ((ret = parse_icy(s, tag, p)) < 0)
1248		✗	return ret;
1249		✗	} else if (!av_strcasecmp(tag, "Content-Encoding")) {
1250		✗	if ((ret = parse_content_encoding(h, p)) < 0)
1251		✗	return ret;
1252		✗	} else if (!av_strcasecmp(tag, "Expires")) {
1253		✗	parse_expires(s, p);
1254		✗	} else if (!av_strcasecmp(tag, "Cache-Control")) {
1255		✗	parse_cache_control(s, p);
1256		✗	} else if (!av_strcasecmp(tag, "Retry-After")) {
1257			/* The header can be either an integer that represents seconds, or a date. */
1258			struct tm tm;
1259		✗	int date_ret = parse_http_date(p, &tm);
1260		✗	if (!date_ret) {
1261		✗	time_t retry = av_timegm(&tm);
1262		✗	int64_t now = av_gettime() / 1000000;
1263		✗	int64_t diff = ((int64_t) retry) - now;
1264		✗	s->retry_after = (unsigned int) FFMAX(0, diff);
1265			} else {
1266		✗	s->retry_after = strtoul(p, NULL, 10);
1267			}
1268			}
1269			}
1270		✗	return 1;
1271			}
1272
1273			/**
1274			* Create a string containing cookie values for use as a HTTP cookie header
1275			* field value for a particular path and domain from the cookie values stored in
1276			* the HTTP protocol context. The cookie string is stored in *cookies, and may
1277			* be NULL if there are no valid cookies.
1278			*
1279			* @return a negative value if an error condition occurred, 0 otherwise
1280			*/
1281		✗	static int get_cookies(HTTPContext *s, char **cookies, const char *path,
1282			const char *domain)
1283			{
1284			// cookie strings will look like Set-Cookie header field values. Multiple
1285			// Set-Cookie fields will result in multiple values delimited by a newline
1286		✗	int ret = 0;
1287			char *cookie, *set_cookies, *next;
1288		✗	char *saveptr = NULL;
1289
1290			// destroy any cookies in the dictionary.
1291		✗	av_dict_free(&s->cookie_dict);
1292
1293		✗	if (!s->cookies)
1294		✗	return 0;
1295
1296		✗	next = set_cookies = av_strdup(s->cookies);
1297		✗	if (!next)
1298		✗	return AVERROR(ENOMEM);
1299
1300		✗	*cookies = NULL;
1301		✗	while ((cookie = av_strtok(next, "\n", &saveptr)) && !ret) {
1302		✗	AVDictionary *cookie_params = NULL;
1303			const AVDictionaryEntry *cookie_entry, *e;
1304
1305		✗	next = NULL;
1306			// store the cookie in a dict in case it is updated in the response
1307		✗	if (parse_cookie(s, cookie, &s->cookie_dict))
1308		✗	av_log(s, AV_LOG_WARNING, "Unable to parse '%s'\n", cookie);
1309
1310			// continue on to the next cookie if this one cannot be parsed
1311		✗	if (parse_set_cookie(cookie, &cookie_params))
1312		✗	goto skip_cookie;
1313
1314			// if the cookie has no value, skip it
1315		✗	cookie_entry = av_dict_iterate(cookie_params, NULL);
1316		✗	if (!cookie_entry || !cookie_entry->value)
1317		✗	goto skip_cookie;
1318
1319			// if the cookie has expired, don't add it
1320		✗	if ((e = av_dict_get(cookie_params, "expires", NULL, 0)) && e->value) {
1321		✗	struct tm tm_buf = {0};
1322		✗	if (!parse_http_date(e->value, &tm_buf)) {
1323		✗	if (av_timegm(&tm_buf) < av_gettime() / 1000000)
1324		✗	goto skip_cookie;
1325			}
1326			}
1327
1328			// if no domain in the cookie assume it appied to this request
1329		✗	if ((e = av_dict_get(cookie_params, "domain", NULL, 0)) && e->value) {
1330			// find the offset comparison is on the min domain (b.com, not a.b.com)
1331		✗	int domain_offset = strlen(domain) - strlen(e->value);
1332		✗	if (domain_offset < 0)
1333		✗	goto skip_cookie;
1334
1335			// match the cookie domain
1336		✗	if (av_strcasecmp(&domain[domain_offset], e->value))
1337		✗	goto skip_cookie;
1338			}
1339
1340			// if a cookie path is provided, ensure the request path is within that path
1341		✗	e = av_dict_get(cookie_params, "path", NULL, 0);
1342		✗	if (e && av_strncasecmp(path, e->value, strlen(e->value)))
1343		✗	goto skip_cookie;
1344
1345			// cookie parameters match, so copy the value
1346		✗	if (!*cookies) {
1347		✗	*cookies = av_asprintf("%s=%s", cookie_entry->key, cookie_entry->value);
1348			} else {
1349		✗	char *tmp = *cookies;
1350		✗	*cookies = av_asprintf("%s; %s=%s", tmp, cookie_entry->key, cookie_entry->value);
1351		✗	av_free(tmp);
1352			}
1353		✗	if (!*cookies)
1354		✗	ret = AVERROR(ENOMEM);
1355
1356		✗	skip_cookie:
1357		✗	av_dict_free(&cookie_params);
1358			}
1359
1360		✗	av_free(set_cookies);
1361
1362		✗	return ret;
1363			}
1364
1365		✗	static inline int has_header(const char *str, const char *header)
1366			{
1367			/* header + 2 to skip over CRLF prefix. (make sure you have one!) */
1368		✗	if (!str)
1369		✗	return 0;
1370		✗	return av_stristart(str, header + 2, NULL) || av_stristr(str, header);
1371			}
1372
1373		✗	static int http_read_header(URLContext *h)
1374			{
1375		✗	HTTPContext *s = h->priv_data;
1376			char line[MAX_URL_SIZE];
1377		✗	int err = 0, http_err = 0;
1378
1379		✗	av_freep(&s->new_location);
1380		✗	s->expires = 0;
1381		✗	s->chunksize = UINT64_MAX;
1382		✗	s->filesize_from_content_range = UINT64_MAX;
1383
1384		✗	for (;;) {
1385		✗	int parsed_http_code = 0;
1386
1387		✗	if ((err = http_get_line(s, line, sizeof(line))) < 0)
1388		✗	return err;
1389
1390		✗	av_log(h, AV_LOG_TRACE, "header='%s'\n", line);
1391
1392		✗	err = process_line(h, line, s->line_count, &parsed_http_code);
1393		✗	if (err < 0) {
1394		✗	if (parsed_http_code) {
1395		✗	http_err = err;
1396			} else {
1397			/* Prefer to return HTTP code error if we've already seen one. */
1398		✗	if (http_err)
1399		✗	return http_err;
1400			else
1401		✗	return err;
1402			}
1403			}
1404		✗	if (err == 0)
1405		✗	break;
1406		✗	s->line_count++;
1407			}
1408		✗	if (http_err)
1409		✗	return http_err;
1410
1411			// filesize from Content-Range can always be used, even if using chunked Transfer-Encoding
1412		✗	if (s->filesize_from_content_range != UINT64_MAX)
1413		✗	s->filesize = s->filesize_from_content_range;
1414
1415		✗	if (s->seekable == -1 && s->is_mediagateway && s->filesize == 2000000000)
1416		✗	h->is_streamed = 1; /* we can in fact _not_ seek */
1417
1418			// add any new cookies into the existing cookie string
1419		✗	cookie_string(s->cookie_dict, &s->cookies);
1420		✗	av_dict_free(&s->cookie_dict);
1421
1422		✗	return err;
1423			}
1424
1425			/**
1426			* Escape unsafe characters in path in order to pass them safely to the HTTP
1427			* request. Insipred by the algorithm in GNU wget:
1428			* - escape "%" characters not followed by two hex digits
1429			* - escape all "unsafe" characters except which are also "reserved"
1430			* - pass through everything else
1431			*/
1432		✗	static void bprint_escaped_path(AVBPrint *bp, const char *path)
1433			{
1434			#define NEEDS_ESCAPE(ch) \
1435			((ch) <= ' ' || (ch) >= '\x7f' || \
1436			(ch) == '"' || (ch) == '%' || (ch) == '<' || (ch) == '>' || (ch) == '\\' || \
1437			(ch) == '^' || (ch) == '`' || (ch) == '{' || (ch) == '}' || (ch) == '|')
1438		✗	while (*path) {
1439			char buf[1024];
1440		✗	char *q = buf;
1441		✗	while (*path && q - buf < sizeof(buf) - 4) {
1442		✗	if (path[0] == '%' && av_isxdigit(path[1]) && av_isxdigit(path[2])) {
1443		✗	*q++ = *path++;
1444		✗	*q++ = *path++;
1445		✗	*q++ = *path++;
1446		✗	} else if (NEEDS_ESCAPE(*path)) {
1447		✗	q += snprintf(q, 4, "%%%02X", (uint8_t)*path++);
1448			} else {
1449		✗	*q++ = *path++;
1450			}
1451			}
1452		✗	av_bprint_append_data(bp, buf, q - buf);
1453			}
1454		✗	}
1455
1456		✗	static int http_connect(URLContext *h, const char *path, const char *local_path,
1457			const char *hoststr, const char *auth,
1458			const char *proxyauth)
1459			{
1460		✗	HTTPContext *s = h->priv_data;
1461			int post, err;
1462			AVBPrint request;
1463		✗	char *authstr = NULL, *proxyauthstr = NULL;
1464		✗	uint64_t off = s->off;
1465			const char *method;
1466		✗	int send_expect_100 = 0;
1467
1468		✗	av_bprint_init_for_buffer(&request, s->buffer, sizeof(s->buffer));
1469
1470			/* send http header */
1471		✗	post = h->flags & AVIO_FLAG_WRITE;
1472
1473		✗	if (s->post_data) {
1474			/* force POST method and disable chunked encoding when
1475			* custom HTTP post data is set */
1476		✗	post = 1;
1477		✗	s->chunked_post = 0;
1478			}
1479
1480		✗	if (s->method)
1481		✗	method = s->method;
1482			else
1483		✗	method = post ? "POST" : "GET";
1484
1485		✗	authstr = ff_http_auth_create_response(&s->auth_state, auth,
1486			local_path, method);
1487		✗	proxyauthstr = ff_http_auth_create_response(&s->proxy_auth_state, proxyauth,
1488			local_path, method);
1489
1490		✗	if (post && !s->post_data) {
1491		✗	if (s->send_expect_100 != -1) {
1492		✗	send_expect_100 = s->send_expect_100;
1493			} else {
1494		✗	send_expect_100 = 0;
1495			/* The user has supplied authentication but we don't know the auth type,
1496			* send Expect: 100-continue to get the 401 response including the
1497			* WWW-Authenticate header, or an 100 continue if no auth actually
1498			* is needed. */
1499		✗	if (auth && *auth &&
1500		✗	s->auth_state.auth_type == HTTP_AUTH_NONE &&
1501		✗	s->http_code != 401)
1502		✗	send_expect_100 = 1;
1503			}
1504			}
1505
1506		✗	av_bprintf(&request, "%s ", method);
1507		✗	bprint_escaped_path(&request, path);
1508		✗	av_bprintf(&request, " HTTP/1.1\r\n");
1509
1510		✗	if (post && s->chunked_post)
1511		✗	av_bprintf(&request, "Transfer-Encoding: chunked\r\n");
1512			/* set default headers if needed */
1513		✗	if (!has_header(s->headers, "\r\nUser-Agent: "))
1514		✗	av_bprintf(&request, "User-Agent: %s\r\n", s->user_agent);
1515		✗	if (s->referer) {
1516			/* set default headers if needed */
1517		✗	if (!has_header(s->headers, "\r\nReferer: "))
1518		✗	av_bprintf(&request, "Referer: %s\r\n", s->referer);
1519			}
1520		✗	if (!has_header(s->headers, "\r\nAccept: "))
1521		✗	av_bprintf(&request, "Accept: */*\r\n");
1522			// Note: we send the Range header on purpose, even when we're probing,
1523			// since it allows us to detect more reliably if a (non-conforming)
1524			// server supports seeking by analysing the reply headers.
1525		✗	if (!has_header(s->headers, "\r\nRange: ") && !post && (s->off > 0 || s->end_off || s->seekable != 0)) {
1526		✗	av_bprintf(&request, "Range: bytes=%"PRIu64"-", s->off);
1527		✗	if (s->end_off)
1528		✗	av_bprintf(&request, "%"PRId64, s->end_off - 1);
1529		✗	av_bprintf(&request, "\r\n");
1530			}
1531		✗	if (send_expect_100 && !has_header(s->headers, "\r\nExpect: "))
1532		✗	av_bprintf(&request, "Expect: 100-continue\r\n");
1533
1534		✗	if (!has_header(s->headers, "\r\nConnection: "))
1535		✗	av_bprintf(&request, "Connection: %s\r\n", s->multiple_requests ? "keep-alive" : "close");
1536
1537		✗	if (!has_header(s->headers, "\r\nHost: "))
1538		✗	av_bprintf(&request, "Host: %s\r\n", hoststr);
1539		✗	if (!has_header(s->headers, "\r\nContent-Length: ") && s->post_data)
1540		✗	av_bprintf(&request, "Content-Length: %d\r\n", s->post_datalen);
1541
1542		✗	if (!has_header(s->headers, "\r\nContent-Type: ") && s->content_type)
1543		✗	av_bprintf(&request, "Content-Type: %s\r\n", s->content_type);
1544		✗	if (!has_header(s->headers, "\r\nCookie: ") && s->cookies) {
1545		✗	char *cookies = NULL;
1546		✗	if (!get_cookies(s, &cookies, path, hoststr) && cookies) {
1547		✗	av_bprintf(&request, "Cookie: %s\r\n", cookies);
1548		✗	av_free(cookies);
1549			}
1550			}
1551		✗	if (!has_header(s->headers, "\r\nIcy-MetaData: ") && s->icy)
1552		✗	av_bprintf(&request, "Icy-MetaData: 1\r\n");
1553
1554			/* now add in custom headers */
1555		✗	if (s->headers)
1556		✗	av_bprintf(&request, "%s", s->headers);
1557
1558		✗	if (authstr)
1559		✗	av_bprintf(&request, "%s", authstr);
1560		✗	if (proxyauthstr)
1561		✗	av_bprintf(&request, "Proxy-%s", proxyauthstr);
1562		✗	av_bprintf(&request, "\r\n");
1563
1564		✗	av_log(h, AV_LOG_DEBUG, "request: %s\n", request.str);
1565
1566		✗	if (!av_bprint_is_complete(&request)) {
1567		✗	av_log(h, AV_LOG_ERROR, "overlong headers\n");
1568		✗	err = AVERROR(EINVAL);
1569		✗	goto done;
1570			}
1571
1572		✗	if ((err = ffurl_write(s->hd, request.str, request.len)) < 0)
1573		✗	goto done;
1574
1575		✗	if (s->post_data)
1576		✗	if ((err = ffurl_write(s->hd, s->post_data, s->post_datalen)) < 0)
1577		✗	goto done;
1578
1579			/* init input buffer */
1580		✗	s->buf_ptr = s->buffer;
1581		✗	s->buf_end = s->buffer;
1582		✗	s->line_count = 0;
1583		✗	s->off = 0;
1584		✗	s->icy_data_read = 0;
1585		✗	s->filesize = UINT64_MAX;
1586		✗	s->willclose = 0;
1587		✗	s->end_chunked_post = 0;
1588		✗	s->end_header = 0;
1589			#if CONFIG_ZLIB
1590		✗	s->compressed = 0;
1591			#endif
1592		✗	if (post && !s->post_data && !send_expect_100) {
1593			/* Pretend that it did work. We didn't read any header yet, since
1594			* we've still to send the POST data, but the code calling this
1595			* function will check http_code after we return. */
1596		✗	s->http_code = 200;
1597		✗	err = 0;
1598		✗	goto done;
1599			}
1600
1601			/* wait for header */
1602		✗	err = http_read_header(h);
1603		✗	if (err < 0)
1604		✗	goto done;
1605
1606		✗	if (s->new_location)
1607		✗	s->off = off;
1608
1609		✗	err = (off == s->off) ? 0 : -1;
1610		✗	done:
1611		✗	av_freep(&authstr);
1612		✗	av_freep(&proxyauthstr);
1613		✗	return err;
1614			}
1615
1616		✗	static int http_buf_read(URLContext *h, uint8_t *buf, int size)
1617			{
1618		✗	HTTPContext *s = h->priv_data;
1619			int len;
1620
1621		✗	if (s->chunksize != UINT64_MAX) {
1622		✗	if (s->chunkend) {
1623		✗	return AVERROR_EOF;
1624			}
1625		✗	if (!s->chunksize) {
1626			char line[32];
1627			int err;
1628
1629			do {
1630		✗	if ((err = http_get_line(s, line, sizeof(line))) < 0)
1631		✗	return err;
1632		✗	} while (!*line); /* skip CR LF from last chunk */
1633
1634		✗	s->chunksize = strtoull(line, NULL, 16);
1635
1636		✗	av_log(h, AV_LOG_TRACE,
1637			"Chunked encoding data size: %"PRIu64"\n",
1638			s->chunksize);
1639
1640		✗	if (!s->chunksize && s->multiple_requests) {
1641		✗	http_get_line(s, line, sizeof(line)); // read empty chunk
1642		✗	s->chunkend = 1;
1643		✗	return 0;
1644			}
1645		✗	else if (!s->chunksize) {
1646		✗	av_log(h, AV_LOG_DEBUG, "Last chunk received, closing conn\n");
1647		✗	ffurl_closep(&s->hd);
1648		✗	return 0;
1649			}
1650		✗	else if (s->chunksize == UINT64_MAX) {
1651		✗	av_log(h, AV_LOG_ERROR, "Invalid chunk size %"PRIu64"\n",
1652			s->chunksize);
1653		✗	return AVERROR(EINVAL);
1654			}
1655			}
1656		✗	size = FFMIN(size, s->chunksize);
1657			}
1658
1659			/* read bytes from input buffer first */
1660		✗	len = s->buf_end - s->buf_ptr;
1661		✗	if (len > 0) {
1662		✗	if (len > size)
1663		✗	len = size;
1664		✗	memcpy(buf, s->buf_ptr, len);
1665		✗	s->buf_ptr += len;
1666			} else {
1667		✗	uint64_t target_end = s->end_off ? s->end_off : s->filesize;
1668		✗	if ((!s->willclose || s->chunksize == UINT64_MAX) && s->off >= target_end)
1669		✗	return AVERROR_EOF;
1670		✗	len = ffurl_read(s->hd, buf, size);
1671		✗	if ((!len || len == AVERROR_EOF) &&
1672		✗	(!s->willclose || s->chunksize == UINT64_MAX) && s->off < target_end) {
1673		✗	av_log(h, AV_LOG_ERROR,
1674			"Stream ends prematurely at %"PRIu64", should be %"PRIu64"\n",
1675			s->off, target_end
1676			);
1677		✗	return AVERROR(EIO);
1678			}
1679			}
1680		✗	if (len > 0) {
1681		✗	s->off += len;
1682		✗	if (s->chunksize > 0 && s->chunksize != UINT64_MAX) {
1683		✗	av_assert0(s->chunksize >= len);
1684		✗	s->chunksize -= len;
1685			}
1686			}
1687		✗	return len;
1688			}
1689
1690			#if CONFIG_ZLIB
1691			#define DECOMPRESS_BUF_SIZE (256 * 1024)
1692		✗	static int http_buf_read_compressed(URLContext *h, uint8_t *buf, int size)
1693			{
1694		✗	HTTPContext *s = h->priv_data;
1695			int ret;
1696
1697		✗	if (!s->inflate_buffer) {
1698		✗	s->inflate_buffer = av_malloc(DECOMPRESS_BUF_SIZE);
1699		✗	if (!s->inflate_buffer)
1700		✗	return AVERROR(ENOMEM);
1701			}
1702
1703		✗	if (s->inflate_stream.avail_in == 0) {
1704		✗	int read = http_buf_read(h, s->inflate_buffer, DECOMPRESS_BUF_SIZE);
1705		✗	if (read <= 0)
1706		✗	return read;
1707		✗	s->inflate_stream.next_in = s->inflate_buffer;
1708		✗	s->inflate_stream.avail_in = read;
1709			}
1710
1711		✗	s->inflate_stream.avail_out = size;
1712		✗	s->inflate_stream.next_out = buf;
1713
1714		✗	ret = inflate(&s->inflate_stream, Z_SYNC_FLUSH);
1715		✗	if (ret != Z_OK && ret != Z_STREAM_END)
1716		✗	av_log(h, AV_LOG_WARNING, "inflate return value: %d, %s\n",
1717			ret, s->inflate_stream.msg);
1718
1719		✗	return size - s->inflate_stream.avail_out;
1720			}
1721			#endif /* CONFIG_ZLIB */
1722
1723			static int64_t http_seek_internal(URLContext *h, int64_t off, int whence, int force_reconnect);
1724
1725		✗	static int http_read_stream(URLContext *h, uint8_t *buf, int size)
1726			{
1727		✗	HTTPContext *s = h->priv_data;
1728			int err, read_ret;
1729			int64_t seek_ret;
1730		✗	int reconnect_delay = 0;
1731		✗	int reconnect_delay_total = 0;
1732		✗	int conn_attempts = 1;
1733
1734		✗	if (!s->hd)
1735		✗	return AVERROR_EOF;
1736
1737		✗	if (s->end_chunked_post && !s->end_header) {
1738		✗	err = http_read_header(h);
1739		✗	if (err < 0)
1740		✗	return err;
1741			}
1742
1743			#if CONFIG_ZLIB
1744		✗	if (s->compressed)
1745		✗	return http_buf_read_compressed(h, buf, size);
1746			#endif /* CONFIG_ZLIB */
1747		✗	read_ret = http_buf_read(h, buf, size);
1748		✗	while (read_ret < 0) {
1749		✗	uint64_t target = h->is_streamed ? 0 : s->off;
1750
1751		✗	if (read_ret == AVERROR_EXIT)
1752		✗	break;
1753
1754		✗	if (h->is_streamed && !s->reconnect_streamed)
1755		✗	break;
1756
1757		✗	if (!(s->reconnect && s->filesize > 0 && s->off < s->filesize) &&
1758		✗	!(s->reconnect_at_eof && read_ret == AVERROR_EOF))
1759			break;
1760
1761		✗	if (reconnect_delay > s->reconnect_delay_max || (s->reconnect_max_retries >= 0 && conn_attempts > s->reconnect_max_retries) ||
1762		✗	reconnect_delay_total > s->reconnect_delay_total_max)
1763		✗	return AVERROR(EIO);
1764
1765		✗	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));
1766		✗	err = ff_network_sleep_interruptible(1000U*1000*reconnect_delay, &h->interrupt_callback);
1767		✗	if (err != AVERROR(ETIMEDOUT))
1768		✗	return err;
1769		✗	reconnect_delay_total += reconnect_delay;
1770		✗	reconnect_delay = 1 + 2*reconnect_delay;
1771		✗	conn_attempts++;
1772		✗	seek_ret = http_seek_internal(h, target, SEEK_SET, 1);
1773		✗	if (seek_ret >= 0 && seek_ret != target) {
1774		✗	av_log(h, AV_LOG_ERROR, "Failed to reconnect at %"PRIu64".\n", target);
1775		✗	return read_ret;
1776			}
1777
1778		✗	read_ret = http_buf_read(h, buf, size);
1779			}
1780
1781		✗	return read_ret;
1782			}
1783
1784			// Like http_read_stream(), but no short reads.
1785			// Assumes partial reads are an error.
1786		✗	static int http_read_stream_all(URLContext *h, uint8_t *buf, int size)
1787			{
1788		✗	int pos = 0;
1789		✗	while (pos < size) {
1790		✗	int len = http_read_stream(h, buf + pos, size - pos);
1791		✗	if (len < 0)
1792		✗	return len;
1793		✗	pos += len;
1794			}
1795		✗	return pos;
1796			}
1797
1798		✗	static void update_metadata(URLContext *h, char *data)
1799			{
1800			char *key;
1801			char *val;
1802			char *end;
1803		✗	char *next = data;
1804		✗	HTTPContext *s = h->priv_data;
1805
1806		✗	while (*next) {
1807		✗	key = next;
1808		✗	val = strstr(key, "='");
1809		✗	if (!val)
1810		✗	break;
1811		✗	end = strstr(val, "';");
1812		✗	if (!end)
1813		✗	break;
1814
1815		✗	*val = '\0';
1816		✗	*end = '\0';
1817		✗	val += 2;
1818
1819		✗	av_dict_set(&s->metadata, key, val, 0);
1820		✗	av_log(h, AV_LOG_VERBOSE, "Metadata update for %s: %s\n", key, val);
1821
1822		✗	next = end + 2;
1823			}
1824		✗	}
1825
1826		✗	static int store_icy(URLContext *h, int size)
1827			{
1828		✗	HTTPContext *s = h->priv_data;
1829			/* until next metadata packet */
1830			uint64_t remaining;
1831
1832		✗	if (s->icy_metaint < s->icy_data_read)
1833		✗	return AVERROR_INVALIDDATA;
1834		✗	remaining = s->icy_metaint - s->icy_data_read;
1835
1836		✗	if (!remaining) {
1837			/* The metadata packet is variable sized. It has a 1 byte header
1838			* which sets the length of the packet (divided by 16). If it's 0,
1839			* the metadata doesn't change. After the packet, icy_metaint bytes
1840			* of normal data follows. */
1841			uint8_t ch;
1842		✗	int len = http_read_stream_all(h, &ch, 1);
1843		✗	if (len < 0)
1844		✗	return len;
1845		✗	if (ch > 0) {
1846			char data[255 * 16 + 1];
1847			int ret;
1848		✗	len = ch * 16;
1849		✗	ret = http_read_stream_all(h, data, len);
1850		✗	if (ret < 0)
1851		✗	return ret;
1852		✗	data[len + 1] = 0;
1853		✗	if ((ret = av_opt_set(s, "icy_metadata_packet", data, 0)) < 0)
1854		✗	return ret;
1855		✗	update_metadata(h, data);
1856			}
1857		✗	s->icy_data_read = 0;
1858		✗	remaining = s->icy_metaint;
1859			}
1860
1861		✗	return FFMIN(size, remaining);
1862			}
1863
1864		✗	static int http_read(URLContext *h, uint8_t *buf, int size)
1865			{
1866		✗	HTTPContext *s = h->priv_data;
1867
1868		✗	if (s->icy_metaint > 0) {
1869		✗	size = store_icy(h, size);
1870		✗	if (size < 0)
1871		✗	return size;
1872			}
1873
1874		✗	size = http_read_stream(h, buf, size);
1875		✗	if (size > 0)
1876		✗	s->icy_data_read += size;
1877		✗	return size;
1878			}
1879
1880			/* used only when posting data */
1881		✗	static int http_write(URLContext *h, const uint8_t *buf, int size)
1882			{
1883		✗	char temp[11] = ""; /* 32-bit hex + CRLF + nul */
1884			int ret;
1885		✗	char crlf[] = "\r\n";
1886		✗	HTTPContext *s = h->priv_data;
1887
1888		✗	if (!s->chunked_post) {
1889			/* non-chunked data is sent without any special encoding */
1890		✗	return ffurl_write(s->hd, buf, size);
1891			}
1892
1893			/* silently ignore zero-size data since chunk encoding that would
1894			* signal EOF */
1895		✗	if (size > 0) {
1896			/* upload data using chunked encoding */
1897		✗	snprintf(temp, sizeof(temp), "%x\r\n", size);
1898
1899		✗	if ((ret = ffurl_write(s->hd, temp, strlen(temp))) < 0 ||
1900		✗	(ret = ffurl_write(s->hd, buf, size)) < 0 ||
1901		✗	(ret = ffurl_write(s->hd, crlf, sizeof(crlf) - 1)) < 0)
1902		✗	return ret;
1903			}
1904		✗	return size;
1905			}
1906
1907		✗	static int http_shutdown(URLContext *h, int flags)
1908			{
1909		✗	int ret = 0;
1910		✗	char footer[] = "0\r\n\r\n";
1911		✗	HTTPContext *s = h->priv_data;
1912
1913			/* signal end of chunked encoding if used */
1914		✗	if (((flags & AVIO_FLAG_WRITE) && s->chunked_post) ||
1915		✗	((flags & AVIO_FLAG_READ) && s->chunked_post && s->listen)) {
1916		✗	ret = ffurl_write(s->hd, footer, sizeof(footer) - 1);
1917		✗	ret = ret > 0 ? 0 : ret;
1918			/* flush the receive buffer when it is write only mode */
1919		✗	if (!(flags & AVIO_FLAG_READ)) {
1920			char buf[1024];
1921			int read_ret;
1922		✗	s->hd->flags |= AVIO_FLAG_NONBLOCK;
1923		✗	read_ret = ffurl_read(s->hd, buf, sizeof(buf));
1924		✗	s->hd->flags &= ~AVIO_FLAG_NONBLOCK;
1925		✗	if (read_ret < 0 && read_ret != AVERROR(EAGAIN)) {
1926		✗	av_log(h, AV_LOG_ERROR, "URL read error: %s\n", av_err2str(read_ret));
1927		✗	ret = read_ret;
1928			}
1929			}
1930		✗	s->end_chunked_post = 1;
1931			}
1932
1933		✗	return ret;
1934			}
1935
1936		✗	static int http_close(URLContext *h)
1937			{
1938		✗	int ret = 0;
1939		✗	HTTPContext *s = h->priv_data;
1940
1941			#if CONFIG_ZLIB
1942		✗	inflateEnd(&s->inflate_stream);
1943		✗	av_freep(&s->inflate_buffer);
1944			#endif /* CONFIG_ZLIB */
1945
1946		✗	if (s->hd && !s->end_chunked_post)
1947			/* Close the write direction by sending the end of chunked encoding. */
1948		✗	ret = http_shutdown(h, h->flags);
1949
1950		✗	if (s->hd)
1951		✗	ffurl_closep(&s->hd);
1952		✗	av_dict_free(&s->chained_options);
1953		✗	av_dict_free(&s->cookie_dict);
1954		✗	av_dict_free(&s->redirect_cache);
1955		✗	av_freep(&s->new_location);
1956		✗	av_freep(&s->uri);
1957		✗	return ret;
1958			}
1959
1960		✗	static int64_t http_seek_internal(URLContext *h, int64_t off, int whence, int force_reconnect)
1961			{
1962		✗	HTTPContext *s = h->priv_data;
1963		✗	URLContext *old_hd = s->hd;
1964		✗	uint64_t old_off = s->off;
1965			uint8_t old_buf[BUFFER_SIZE];
1966			int old_buf_size, ret;
1967		✗	AVDictionary *options = NULL;
1968
1969		✗	if (whence == AVSEEK_SIZE)
1970		✗	return s->filesize;
1971		✗	else if (!force_reconnect &&
1972		✗	((whence == SEEK_CUR && off == 0) ||
1973		✗	(whence == SEEK_SET && off == s->off)))
1974		✗	return s->off;
1975		✗	else if ((s->filesize == UINT64_MAX && whence == SEEK_END))
1976		✗	return AVERROR(ENOSYS);
1977
1978		✗	if (whence == SEEK_CUR)
1979		✗	off += s->off;
1980		✗	else if (whence == SEEK_END)
1981		✗	off += s->filesize;
1982		✗	else if (whence != SEEK_SET)
1983		✗	return AVERROR(EINVAL);
1984		✗	if (off < 0)
1985		✗	return AVERROR(EINVAL);
1986		✗	s->off = off;
1987
1988		✗	if (s->off && h->is_streamed)
1989		✗	return AVERROR(ENOSYS);
1990
1991			/* do not try to make a new connection if seeking past the end of the file */
1992		✗	if (s->end_off || s->filesize != UINT64_MAX) {
1993		✗	uint64_t end_pos = s->end_off ? s->end_off : s->filesize;
1994		✗	if (s->off >= end_pos)
1995		✗	return s->off;
1996			}
1997
1998			/* if the location changed (redirect), revert to the original uri */
1999		✗	if (strcmp(s->uri, s->location)) {
2000			char *new_uri;
2001		✗	new_uri = av_strdup(s->uri);
2002		✗	if (!new_uri)
2003		✗	return AVERROR(ENOMEM);
2004		✗	av_free(s->location);
2005		✗	s->location = new_uri;
2006			}
2007
2008			/* we save the old context in case the seek fails */
2009		✗	old_buf_size = s->buf_end - s->buf_ptr;
2010		✗	memcpy(old_buf, s->buf_ptr, old_buf_size);
2011		✗	s->hd = NULL;
2012
2013			/* if it fails, continue on old connection */
2014		✗	if ((ret = http_open_cnx(h, &options)) < 0) {
2015		✗	av_dict_free(&options);
2016		✗	memcpy(s->buffer, old_buf, old_buf_size);
2017		✗	s->buf_ptr = s->buffer;
2018		✗	s->buf_end = s->buffer + old_buf_size;
2019		✗	s->hd = old_hd;
2020		✗	s->off = old_off;
2021		✗	return ret;
2022			}
2023		✗	av_dict_free(&options);
2024		✗	ffurl_close(old_hd);
2025		✗	return off;
2026			}
2027
2028		✗	static int64_t http_seek(URLContext *h, int64_t off, int whence)
2029			{
2030		✗	return http_seek_internal(h, off, whence, 0);
2031			}
2032
2033		✗	static int http_get_file_handle(URLContext *h)
2034			{
2035		✗	HTTPContext *s = h->priv_data;
2036		✗	return ffurl_get_file_handle(s->hd);
2037			}
2038
2039		✗	static int http_get_short_seek(URLContext *h)
2040			{
2041		✗	HTTPContext *s = h->priv_data;
2042		✗	if (s->short_seek_size >= 1)
2043		✗	return s->short_seek_size;
2044		✗	return ffurl_get_short_seek(s->hd);
2045			}
2046
2047			#define HTTP_CLASS(flavor) \
2048			static const AVClass flavor ## _context_class = { \
2049			.class_name = # flavor, \
2050			.item_name = av_default_item_name, \
2051			.option = options, \
2052			.version = LIBAVUTIL_VERSION_INT, \
2053			}
2054
2055			#if CONFIG_HTTP_PROTOCOL
2056			HTTP_CLASS(http);
2057
2058			const URLProtocol ff_http_protocol = {
2059			.name = "http",
2060			.url_open2 = http_open,
2061			.url_accept = http_accept,
2062			.url_handshake = http_handshake,
2063			.url_read = http_read,
2064			.url_write = http_write,
2065			.url_seek = http_seek,
2066			.url_close = http_close,
2067			.url_get_file_handle = http_get_file_handle,
2068			.url_get_short_seek = http_get_short_seek,
2069			.url_shutdown = http_shutdown,
2070			.priv_data_size = sizeof(HTTPContext),
2071			.priv_data_class = &http_context_class,
2072			.flags = URL_PROTOCOL_FLAG_NETWORK,
2073			.default_whitelist = "http,https,tls,rtp,tcp,udp,crypto,httpproxy,data"
2074			};
2075			#endif /* CONFIG_HTTP_PROTOCOL */
2076
2077			#if CONFIG_HTTPS_PROTOCOL
2078			HTTP_CLASS(https);
2079
2080			const URLProtocol ff_https_protocol = {
2081			.name = "https",
2082			.url_open2 = http_open,
2083			.url_read = http_read,
2084			.url_write = http_write,
2085			.url_seek = http_seek,
2086			.url_close = http_close,
2087			.url_get_file_handle = http_get_file_handle,
2088			.url_get_short_seek = http_get_short_seek,
2089			.url_shutdown = http_shutdown,
2090			.priv_data_size = sizeof(HTTPContext),
2091			.priv_data_class = &https_context_class,
2092			.flags = URL_PROTOCOL_FLAG_NETWORK,
2093			.default_whitelist = "http,https,tls,rtp,tcp,udp,crypto,httpproxy"
2094			};
2095			#endif /* CONFIG_HTTPS_PROTOCOL */
2096
2097			#if CONFIG_HTTPPROXY_PROTOCOL
2098		✗	static int http_proxy_close(URLContext *h)
2099			{
2100		✗	HTTPContext *s = h->priv_data;
2101		✗	if (s->hd)
2102		✗	ffurl_closep(&s->hd);
2103		✗	return 0;
2104			}
2105
2106		✗	static int http_proxy_open(URLContext *h, const char *uri, int flags)
2107			{
2108		✗	HTTPContext *s = h->priv_data;
2109			char hostname[1024], hoststr[1024];
2110			char auth[1024], pathbuf[1024], *path;
2111			char lower_url[100];
2112		✗	int port, ret = 0, auth_attempts = 0;
2113			HTTPAuthType cur_auth_type;
2114			char *authstr;
2115
2116		✗	if( s->seekable == 1 )
2117		✗	h->is_streamed = 0;
2118			else
2119		✗	h->is_streamed = 1;
2120
2121		✗	av_url_split(NULL, 0, auth, sizeof(auth), hostname, sizeof(hostname), &port,
2122			pathbuf, sizeof(pathbuf), uri);
2123		✗	ff_url_join(hoststr, sizeof(hoststr), NULL, NULL, hostname, port, NULL);
2124		✗	path = pathbuf;
2125		✗	if (*path == '/')
2126		✗	path++;
2127
2128		✗	ff_url_join(lower_url, sizeof(lower_url), "tcp", NULL, hostname, port,
2129			NULL);
2130		✗	redo:
2131		✗	ret = ffurl_open_whitelist(&s->hd, lower_url, AVIO_FLAG_READ_WRITE,
2132		✗	&h->interrupt_callback, NULL,
2133			h->protocol_whitelist, h->protocol_blacklist, h);
2134		✗	if (ret < 0)
2135		✗	return ret;
2136
2137		✗	authstr = ff_http_auth_create_response(&s->proxy_auth_state, auth,
2138			path, "CONNECT");
2139		✗	snprintf(s->buffer, sizeof(s->buffer),
2140			"CONNECT %s HTTP/1.1\r\n"
2141			"Host: %s\r\n"
2142			"Connection: close\r\n"
2143			"%s%s"
2144			"\r\n",
2145			path,
2146			hoststr,
2147		✗	authstr ? "Proxy-" : "", authstr ? authstr : "");
2148		✗	av_freep(&authstr);
2149
2150		✗	if ((ret = ffurl_write(s->hd, s->buffer, strlen(s->buffer))) < 0)
2151		✗	goto fail;
2152
2153		✗	s->buf_ptr = s->buffer;
2154		✗	s->buf_end = s->buffer;
2155		✗	s->line_count = 0;
2156		✗	s->filesize = UINT64_MAX;
2157		✗	cur_auth_type = s->proxy_auth_state.auth_type;
2158
2159			/* Note: This uses buffering, potentially reading more than the
2160			* HTTP header. If tunneling a protocol where the server starts
2161			* the conversation, we might buffer part of that here, too.
2162			* Reading that requires using the proper ffurl_read() function
2163			* on this URLContext, not using the fd directly (as the tls
2164			* protocol does). This shouldn't be an issue for tls though,
2165			* since the client starts the conversation there, so there
2166			* is no extra data that we might buffer up here.
2167			*/
2168		✗	ret = http_read_header(h);
2169		✗	if (ret < 0)
2170		✗	goto fail;
2171
2172		✗	auth_attempts++;
2173		✗	if (s->http_code == 407 &&
2174		✗	(cur_auth_type == HTTP_AUTH_NONE || s->proxy_auth_state.stale) &&
2175		✗	s->proxy_auth_state.auth_type != HTTP_AUTH_NONE && auth_attempts < 2) {
2176		✗	ffurl_closep(&s->hd);
2177		✗	goto redo;
2178			}
2179
2180		✗	if (s->http_code < 400)
2181		✗	return 0;
2182		✗	ret = ff_http_averror(s->http_code, AVERROR(EIO));
2183
2184		✗	fail:
2185		✗	http_proxy_close(h);
2186		✗	return ret;
2187			}
2188
2189		✗	static int http_proxy_write(URLContext *h, const uint8_t *buf, int size)
2190			{
2191		✗	HTTPContext *s = h->priv_data;
2192		✗	return ffurl_write(s->hd, buf, size);
2193			}
2194
2195			const URLProtocol ff_httpproxy_protocol = {
2196			.name = "httpproxy",
2197			.url_open = http_proxy_open,
2198			.url_read = http_buf_read,
2199			.url_write = http_proxy_write,
2200			.url_close = http_proxy_close,
2201			.url_get_file_handle = http_get_file_handle,
2202			.priv_data_size = sizeof(HTTPContext),
2203			.flags = URL_PROTOCOL_FLAG_NETWORK,
2204			};
2205			#endif /* CONFIG_HTTPPROXY_PROTOCOL */
2206