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 <stdbool.h>
23
24			#include "config.h"
25			#include "config_components.h"
26
27			#include <string.h>
28			#include <time.h>
29			#if CONFIG_ZLIB
30			#include <zlib.h>
31			#endif /* CONFIG_ZLIB */
32
33			#include "libavutil/avassert.h"
34			#include "libavutil/avstring.h"
35			#include "libavutil/bprint.h"
36			#include "libavutil/getenv_utf8.h"
37			#include "libavutil/macros.h"
38			#include "libavutil/mem.h"
39			#include "libavutil/opt.h"
40			#include "libavutil/time.h"
41			#include "libavutil/parseutils.h"
42
43			#include "avformat.h"
44			#include "http.h"
45			#include "httpauth.h"
46			#include "internal.h"
47			#include "network.h"
48			#include "os_support.h"
49			#include "url.h"
50			#include "version.h"
51
52			/* XXX: POST protocol is not completely implemented because ffmpeg uses
53			* only a subset of it. */
54
55			/* The IO buffer size is unrelated to the max URL size in itself, but needs
56			* to be large enough to fit the full request headers (including long
57			* path names). */
58			#define BUFFER_SIZE (MAX_URL_SIZE + HTTP_HEADERS_SIZE)
59			#define MAX_REDIRECTS 8
60			#define MAX_CACHED_REDIRECTS 32
61			#define HTTP_SINGLE 1
62			#define HTTP_MUTLI 2
63			#define MAX_DATE_LEN 19
64			#define WHITESPACES " \n\t\r"
65			typedef enum {
66			LOWER_PROTO,
67			READ_HEADERS,
68			WRITE_REPLY_HEADERS,
69			FINISH
70			}HandshakeState;
71
72			typedef struct HTTPContext {
73			const AVClass *class;
74			URLContext *hd;
75			unsigned char buffer[BUFFER_SIZE], *buf_ptr, *buf_end;
76			int line_count;
77			int http_code;
78			/* Used if "Transfer-Encoding: chunked" otherwise -1. */
79			uint64_t chunksize;
80			int chunkend;
81			uint64_t off, end_off, filesize, range_end;
82			char *uri;
83			char *location;
84			HTTPAuthState auth_state;
85			HTTPAuthState proxy_auth_state;
86			char *http_proxy;
87			char *headers;
88			char *mime_type;
89			char *http_version;
90			char *user_agent;
91			char *referer;
92			char *content_type;
93			/* Set if the server correctly handles Connection: close and will close
94			* the connection after feeding us the content. */
95			int willclose;
96			int seekable; /**< Control seekability, 0 = disable, 1 = enable, -1 = probe. */
97			int chunked_post;
98			/* A flag which indicates if the end of chunked encoding has been sent. */
99			int end_chunked_post;
100			/* A flag which indicates we have finished to read POST reply. */
101			int end_header;
102			/* A flag which indicates if we use persistent connections. */
103			int multiple_requests;
104			uint8_t *post_data;
105			int post_datalen;
106			int is_akamai;
107			int is_mediagateway;
108			char *cookies; ///< holds newline (\n) delimited Set-Cookie header field values (without the "Set-Cookie: " field name)
109			/* A dictionary containing cookies keyed by cookie name */
110			AVDictionary *cookie_dict;
111			int icy;
112			/* how much data was read since the last ICY metadata packet */
113			uint64_t icy_data_read;
114			/* after how many bytes of read data a new metadata packet will be found */
115			uint64_t icy_metaint;
116			char *icy_metadata_headers;
117			char *icy_metadata_packet;
118			AVDictionary *metadata;
119			#if CONFIG_ZLIB
120			int compressed;
121			z_stream inflate_stream;
122			uint8_t *inflate_buffer;
123			#endif /* CONFIG_ZLIB */
124			AVDictionary *chained_options;
125			/* -1 = try to send if applicable, 0 = always disabled, 1 = always enabled */
126			int send_expect_100;
127			char *method;
128			int reconnect;
129			int reconnect_at_eof;
130			int reconnect_on_network_error;
131			int reconnect_streamed;
132			int reconnect_delay_max;
133			char *reconnect_on_http_error;
134			int listen;
135			char *resource;
136			int reply_code;
137			int is_multi_client;
138			HandshakeState handshake_step;
139			int is_connected_server;
140			int short_seek_size;
141			int64_t expires;
142			char *new_location;
143			AVDictionary *redirect_cache;
144			uint64_t filesize_from_content_range;
145			int respect_retry_after;
146			unsigned int retry_after;
147			int reconnect_max_retries;
148			int reconnect_delay_total_max;
149			uint64_t initial_request_size;
150			uint64_t request_size;
151			int initial_requests; /* whether or not to limit requests to initial_request_size */
152			/* Connection statistics */
153			int nb_connections;
154			int nb_requests;
155			int nb_retries;
156			int nb_reconnects;
157			int nb_redirects;
158			int64_t sum_latency; /* divide by nb_requests */
159			int64_t max_latency;
160			int max_redirects;
161			} HTTPContext;
162
163			#define OFFSET(x) offsetof(HTTPContext, x)
164			#define D AV_OPT_FLAG_DECODING_PARAM
165			#define E AV_OPT_FLAG_ENCODING_PARAM
166			#define DEFAULT_USER_AGENT "Lavf/" AV_STRINGIFY(LIBAVFORMAT_VERSION)
167
168			static const AVOption http_options[] = {
169			{ "seekable", "control seekability of connection", OFFSET(seekable), AV_OPT_TYPE_BOOL, { .i64 = -1 }, -1, 1, D },
170			{ "chunked_post", "use chunked transfer-encoding for posts", OFFSET(chunked_post), AV_OPT_TYPE_BOOL, { .i64 = 1 }, 0, 1, E },
171			{ "http_proxy", "set HTTP proxy to tunnel through", OFFSET(http_proxy), AV_OPT_TYPE_STRING, { .str = NULL }, 0, 0, D | E },
172			{ "headers", "set custom HTTP headers, can override built in default headers", OFFSET(headers), AV_OPT_TYPE_STRING, { .str = NULL }, 0, 0, D | E },
173			{ "content_type", "set a specific content type for the POST messages", OFFSET(content_type), AV_OPT_TYPE_STRING, { .str = NULL }, 0, 0, D | E },
174			{ "user_agent", "override User-Agent header", OFFSET(user_agent), AV_OPT_TYPE_STRING, { .str = DEFAULT_USER_AGENT }, 0, 0, D },
175			{ "referer", "override referer header", OFFSET(referer), AV_OPT_TYPE_STRING, { .str = NULL }, 0, 0, D },
176			{ "multiple_requests", "use persistent connections", OFFSET(multiple_requests), AV_OPT_TYPE_BOOL, { .i64 = 0 }, 0, 1, D | E },
177			{ "request_size", "size (in bytes) of requests to make", OFFSET(request_size), AV_OPT_TYPE_INT64, { .i64 = 0 }, 0, INT64_MAX, D },
178			{ "initial_request_size", "size (in bytes) of initial requests made during probing / header parsing", OFFSET(initial_request_size), AV_OPT_TYPE_INT64, { .i64 = 0 }, 0, INT64_MAX, D },
179			{ "post_data", "set custom HTTP post data", OFFSET(post_data), AV_OPT_TYPE_BINARY, .flags = D | E },
180			{ "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 },
181			{ "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 },
182			{ "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 },
183			{ "icy", "request ICY metadata", OFFSET(icy), AV_OPT_TYPE_BOOL, { .i64 = 1 }, 0, 1, D },
184			{ "icy_metadata_headers", "return ICY metadata headers", OFFSET(icy_metadata_headers), AV_OPT_TYPE_STRING, { .str = NULL }, 0, 0, AV_OPT_FLAG_EXPORT },
185			{ "icy_metadata_packet", "return current ICY metadata packet", OFFSET(icy_metadata_packet), AV_OPT_TYPE_STRING, { .str = NULL }, 0, 0, AV_OPT_FLAG_EXPORT },
186			{ "metadata", "metadata read from the bitstream", OFFSET(metadata), AV_OPT_TYPE_DICT, {0}, 0, 0, AV_OPT_FLAG_EXPORT },
187			{ "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"},
188			{ "none", "No auth method set, autodetect", 0, AV_OPT_TYPE_CONST, { .i64 = HTTP_AUTH_NONE }, 0, 0, D | E, .unit = "auth_type"},
189			{ "basic", "HTTP basic authentication", 0, AV_OPT_TYPE_CONST, { .i64 = HTTP_AUTH_BASIC }, 0, 0, D | E, .unit = "auth_type"},
190			{ "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 },
191			{ "location", "The actual location of the data received", OFFSET(location), AV_OPT_TYPE_STRING, { .str = NULL }, 0, 0, D | E },
192			{ "offset", "initial byte offset", OFFSET(off), AV_OPT_TYPE_INT64, { .i64 = 0 }, 0, INT64_MAX, D },
193			{ "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 },
194			{ "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 },
195			{ "reconnect", "auto reconnect after disconnect before EOF", OFFSET(reconnect), AV_OPT_TYPE_BOOL, { .i64 = 0 }, 0, 1, D },
196			{ "reconnect_at_eof", "auto reconnect at EOF", OFFSET(reconnect_at_eof), AV_OPT_TYPE_BOOL, { .i64 = 0 }, 0, 1, D },
197			{ "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 },
198			{ "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 },
199			{ "reconnect_streamed", "auto reconnect streamed / non seekable streams", OFFSET(reconnect_streamed), AV_OPT_TYPE_BOOL, { .i64 = 0 }, 0, 1, D },
200			{ "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 },
201			{ "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 },
202			{ "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 },
203			{ "respect_retry_after", "respect the Retry-After header when retrying connections", OFFSET(respect_retry_after), AV_OPT_TYPE_BOOL, { .i64 = 1 }, 0, 1, D },
204			{ "listen", "listen on HTTP", OFFSET(listen), AV_OPT_TYPE_INT, { .i64 = 0 }, 0, 2, D | E },
205			{ "resource", "The resource requested by a client", OFFSET(resource), AV_OPT_TYPE_STRING, { .str = NULL }, 0, 0, E },
206			{ "reply_code", "The http status code to return to a client", OFFSET(reply_code), AV_OPT_TYPE_INT, { .i64 = 200}, INT_MIN, 599, E},
207			{ "short_seek_size", "Threshold to favor readahead over seek.", OFFSET(short_seek_size), AV_OPT_TYPE_INT, { .i64 = 0 }, 0, INT_MAX, D },
208			{ "max_redirects", "Maximum number of redirects", OFFSET(max_redirects), AV_OPT_TYPE_INT, { .i64 = MAX_REDIRECTS }, 0, INT_MAX, D },
209			{ NULL }
210			};
211
212			static int http_connect(URLContext *h, const char *path, const char *local_path,
213			const char *hoststr, const char *auth,
214			const char *proxyauth);
215			static int http_read_header(URLContext *h);
216			static int http_shutdown(URLContext *h, int flags);
217
218		✗	void ff_http_init_auth_state(URLContext *dest, const URLContext *src)
219			{
220		✗	memcpy(&((HTTPContext *)dest->priv_data)->auth_state,
221		✗	&((HTTPContext *)src->priv_data)->auth_state,
222			sizeof(HTTPAuthState));
223		✗	memcpy(&((HTTPContext *)dest->priv_data)->proxy_auth_state,
224		✗	&((HTTPContext *)src->priv_data)->proxy_auth_state,
225			sizeof(HTTPAuthState));
226		✗	}
227
228		✗	static int http_open_cnx_internal(URLContext *h, AVDictionary **options)
229			{
230		✗	const char *path, *proxy_path, *lower_proto = "tcp", *local_path;
231			char *env_http_proxy, *env_no_proxy;
232			char *hashmark;
233			char hostname[1024], hoststr[1024], proto[10], tmp_host[1024];
234		✗	char auth[1024], proxyauth[1024] = "";
235			char path1[MAX_URL_SIZE], sanitized_path[MAX_URL_SIZE + 1];
236			char buf[1024], urlbuf[MAX_URL_SIZE];
237		✗	int port, use_proxy, err = 0;
238		✗	HTTPContext *s = h->priv_data;
239
240		✗	av_url_split(proto, sizeof(proto), auth, sizeof(auth),
241			hostname, sizeof(hostname), &port,
242		✗	path1, sizeof(path1), s->location);
243
244		✗	av_strlcpy(tmp_host, hostname, sizeof(tmp_host));
245			// In case of an IPv6 address, we need to strip the Zone ID,
246			// if any. We do it at the first % sign, as percent encoding
247			// can be used in the Zone ID itself.
248		✗	if (strchr(tmp_host, ':'))
249		✗	tmp_host[strcspn(tmp_host, "%")] = '\0';
250		✗	ff_url_join(hoststr, sizeof(hoststr), NULL, NULL, tmp_host, port, NULL);
251
252		✗	env_http_proxy = getenv_utf8("http_proxy");
253		✗	proxy_path = s->http_proxy ? s->http_proxy : env_http_proxy;
254
255		✗	env_no_proxy = getenv_utf8("no_proxy");
256		✗	use_proxy = !ff_http_match_no_proxy(env_no_proxy, hostname) &&
257		✗	proxy_path && av_strstart(proxy_path, "http://", NULL);
258		✗	freeenv_utf8(env_no_proxy);
259
260		✗	if (h->protocol_whitelist && av_match_list(proto, h->protocol_whitelist, ',') <= 0) {
261		✗	av_log(h, AV_LOG_ERROR, "Protocol '%s' not on whitelist '%s'!\n", proto, h->protocol_whitelist);
262		✗	return AVERROR(EINVAL);
263			}
264
265		✗	if (h->protocol_blacklist && av_match_list(proto, h->protocol_blacklist, ',') > 0) {
266		✗	av_log(h, AV_LOG_ERROR, "Protocol '%s' on blacklist '%s'!\n", proto, h->protocol_blacklist);
267		✗	return AVERROR(EINVAL);
268			}
269
270		✗	if (!strcmp(proto, "https")) {
271		✗	lower_proto = "tls";
272		✗	use_proxy = 0;
273		✗	if (port < 0)
274		✗	port = 443;
275			/* pass http_proxy to underlying protocol */
276		✗	if (s->http_proxy) {
277		✗	err = av_dict_set(options, "http_proxy", s->http_proxy, 0);
278		✗	if (err < 0)
279		✗	goto end;
280			}
281		✗	} else if (strcmp(proto, "http")) {
282		✗	err = AVERROR(EINVAL);
283		✗	goto end;
284			}
285
286		✗	if (port < 0)
287		✗	port = 80;
288
289		✗	hashmark = strchr(path1, '#');
290		✗	if (hashmark)
291		✗	*hashmark = '\0';
292
293		✗	if (path1[0] == '\0') {
294		✗	path = "/";
295		✗	} else if (path1[0] == '?') {
296		✗	snprintf(sanitized_path, sizeof(sanitized_path), "/%s", path1);
297		✗	path = sanitized_path;
298			} else {
299		✗	path = path1;
300			}
301		✗	local_path = path;
302		✗	if (use_proxy) {
303			/* Reassemble the request URL without auth string - we don't
304			* want to leak the auth to the proxy. */
305		✗	ff_url_join(urlbuf, sizeof(urlbuf), proto, NULL, hostname, port, "%s",
306			path1);
307		✗	path = urlbuf;
308		✗	av_url_split(NULL, 0, proxyauth, sizeof(proxyauth),
309			hostname, sizeof(hostname), &port, NULL, 0, proxy_path);
310			}
311
312		✗	ff_url_join(buf, sizeof(buf), lower_proto, NULL, hostname, port, NULL);
313
314		✗	if (!s->hd) {
315		✗	s->nb_connections++;
316		✗	err = ffurl_open_whitelist(&s->hd, buf, AVIO_FLAG_READ_WRITE,
317		✗	&h->interrupt_callback, options,
318			h->protocol_whitelist, h->protocol_blacklist, h);
319			}
320
321		✗	end:
322		✗	freeenv_utf8(env_http_proxy);
323		✗	return err < 0 ? err : http_connect(
324			h, path, local_path, hoststr, auth, proxyauth);
325			}
326
327		✗	static int http_should_reconnect(HTTPContext *s, int err)
328			{
329			const char *status_group;
330			char http_code[4];
331
332		✗	switch (err) {
333		✗	case AVERROR_HTTP_BAD_REQUEST:
334			case AVERROR_HTTP_UNAUTHORIZED:
335			case AVERROR_HTTP_FORBIDDEN:
336			case AVERROR_HTTP_NOT_FOUND:
337			case AVERROR_HTTP_TOO_MANY_REQUESTS:
338			case AVERROR_HTTP_OTHER_4XX:
339		✗	status_group = "4xx";
340		✗	break;
341
342		✗	case AVERROR_HTTP_SERVER_ERROR:
343		✗	status_group = "5xx";
344		✗	break;
345
346		✗	default:
347		✗	return s->reconnect_on_network_error;
348			}
349
350		✗	if (!s->reconnect_on_http_error)
351		✗	return 0;
352
353		✗	if (av_match_list(status_group, s->reconnect_on_http_error, ',') > 0)
354		✗	return 1;
355
356		✗	snprintf(http_code, sizeof(http_code), "%d", s->http_code);
357
358		✗	return av_match_list(http_code, s->reconnect_on_http_error, ',') > 0;
359			}
360
361		✗	static char *redirect_cache_get(HTTPContext *s)
362			{
363			AVDictionaryEntry *re;
364			int64_t expiry;
365			char *delim;
366
367		✗	re = av_dict_get(s->redirect_cache, s->location, NULL, AV_DICT_MATCH_CASE);
368		✗	if (!re) {
369		✗	return NULL;
370			}
371
372		✗	delim = strchr(re->value, ';');
373		✗	if (!delim) {
374		✗	return NULL;
375			}
376
377		✗	expiry = strtoll(re->value, NULL, 10);
378		✗	if (time(NULL) > expiry) {
379		✗	return NULL;
380			}
381
382		✗	return delim + 1;
383			}
384
385		✗	static int redirect_cache_set(HTTPContext *s, const char *source, const char *dest, int64_t expiry)
386			{
387			char *value;
388			int ret;
389
390		✗	value = av_asprintf("%"PRIi64";%s", expiry, dest);
391		✗	if (!value) {
392		✗	return AVERROR(ENOMEM);
393			}
394
395		✗	ret = av_dict_set(&s->redirect_cache, source, value, AV_DICT_MATCH_CASE | AV_DICT_DONT_STRDUP_VAL);
396		✗	if (ret < 0)
397		✗	return ret;
398
399		✗	return 0;
400			}
401
402			/* return non zero if error */
403		✗	static int http_open_cnx(URLContext *h, AVDictionary **options)
404			{
405			HTTPAuthType cur_auth_type, cur_proxy_auth_type;
406		✗	HTTPContext *s = h->priv_data;
407		✗	int ret, conn_attempts = 1, auth_attempts = 0, redirects = 0;
408		✗	int reconnect_delay = 0;
409		✗	int reconnect_delay_total = 0;
410			uint64_t off;
411			char *cached;
412
413		✗	redo:
414
415		✗	cached = redirect_cache_get(s);
416		✗	if (cached) {
417		✗	if (redirects++ >= s->max_redirects)
418		✗	return AVERROR(EIO);
419
420		✗	av_free(s->location);
421		✗	s->location = av_strdup(cached);
422		✗	if (!s->location) {
423		✗	ret = AVERROR(ENOMEM);
424		✗	goto fail;
425			}
426		✗	goto redo;
427			}
428
429		✗	av_dict_copy(options, s->chained_options, 0);
430
431		✗	cur_auth_type = s->auth_state.auth_type;
432		✗	cur_proxy_auth_type = s->auth_state.auth_type;
433
434		✗	off = s->off;
435		✗	ret = http_open_cnx_internal(h, options);
436		✗	if (ret < 0) {
437		✗	if (!http_should_reconnect(s, ret) ||
438		✗	reconnect_delay > s->reconnect_delay_max ||
439		✗	(s->reconnect_max_retries >= 0 && conn_attempts > s->reconnect_max_retries) ||
440		✗	reconnect_delay_total > s->reconnect_delay_total_max)
441		✗	goto fail;
442
443			/* Both fields here are in seconds. */
444		✗	if (s->respect_retry_after && s->retry_after > 0) {
445		✗	reconnect_delay = s->retry_after;
446		✗	if (reconnect_delay > s->reconnect_delay_max)
447		✗	goto fail;
448		✗	s->retry_after = 0;
449		✗	s->nb_retries++;
450			}
451
452		✗	av_log(h, AV_LOG_WARNING, "Will reconnect at %"PRIu64" in %d second(s).\n", off, reconnect_delay);
453		✗	ret = ff_network_sleep_interruptible(1000U * 1000 * reconnect_delay, &h->interrupt_callback);
454		✗	if (ret != AVERROR(ETIMEDOUT))
455		✗	goto fail;
456		✗	reconnect_delay_total += reconnect_delay;
457		✗	reconnect_delay = 1 + 2 * reconnect_delay;
458		✗	s->nb_reconnects++;
459		✗	conn_attempts++;
460
461			/* restore the offset (http_connect resets it) */
462		✗	s->off = off;
463
464		✗	ffurl_closep(&s->hd);
465		✗	goto redo;
466			}
467
468		✗	auth_attempts++;
469		✗	if (s->http_code == 401) {
470		✗	if ((cur_auth_type == HTTP_AUTH_NONE || s->auth_state.stale) &&
471		✗	s->auth_state.auth_type != HTTP_AUTH_NONE && auth_attempts < 4) {
472		✗	ffurl_closep(&s->hd);
473		✗	goto redo;
474			} else
475		✗	goto fail;
476			}
477		✗	if (s->http_code == 407) {
478		✗	if ((cur_proxy_auth_type == HTTP_AUTH_NONE || s->proxy_auth_state.stale) &&
479		✗	s->proxy_auth_state.auth_type != HTTP_AUTH_NONE && auth_attempts < 4) {
480		✗	ffurl_closep(&s->hd);
481		✗	goto redo;
482			} else
483		✗	goto fail;
484			}
485		✗	if ((s->http_code == 301 || s->http_code == 302 ||
486		✗	s->http_code == 303 || s->http_code == 307 || s->http_code == 308) &&
487		✗	s->new_location) {
488			/* url moved, get next */
489		✗	ffurl_closep(&s->hd);
490		✗	if (redirects++ >= s->max_redirects)
491		✗	return AVERROR(EIO);
492
493		✗	if (!s->expires) {
494		✗	s->expires = (s->http_code == 301 || s->http_code == 308) ? INT64_MAX : -1;
495			}
496
497		✗	if (s->expires > time(NULL) && av_dict_count(s->redirect_cache) < MAX_CACHED_REDIRECTS) {
498		✗	redirect_cache_set(s, s->location, s->new_location, s->expires);
499			}
500
501		✗	av_free(s->location);
502		✗	s->location = s->new_location;
503		✗	s->new_location = NULL;
504		✗	s->nb_redirects++;
505
506			/* Restart the authentication process with the new target, which
507			* might use a different auth mechanism. */
508		✗	memset(&s->auth_state, 0, sizeof(s->auth_state));
509		✗	auth_attempts = 0;
510		✗	goto redo;
511			}
512		✗	return 0;
513
514		✗	fail:
515		✗	s->off = off;
516		✗	if (s->hd)
517		✗	ffurl_closep(&s->hd);
518		✗	if (ret < 0)
519		✗	return ret;
520		✗	return ff_http_averror(s->http_code, AVERROR(EIO));
521			}
522
523		✗	int ff_http_do_new_request(URLContext *h, const char *uri) {
524		✗	return ff_http_do_new_request2(h, uri, NULL);
525			}
526
527		✗	int ff_http_do_new_request2(URLContext *h, const char *uri, AVDictionary **opts)
528			{
529		✗	HTTPContext *s = h->priv_data;
530		✗	AVDictionary *options = NULL;
531			int ret;
532			char hostname1[1024], hostname2[1024], proto1[10], proto2[10];
533			int port1, port2;
534
535		✗	if (!h->prot ||
536		✗	!(!strcmp(h->prot->name, "http") ||
537		✗	!strcmp(h->prot->name, "https")))
538		✗	return AVERROR(EINVAL);
539
540		✗	av_url_split(proto1, sizeof(proto1), NULL, 0,
541			hostname1, sizeof(hostname1), &port1,
542		✗	NULL, 0, s->location);
543		✗	av_url_split(proto2, sizeof(proto2), NULL, 0,
544			hostname2, sizeof(hostname2), &port2,
545			NULL, 0, uri);
546		✗	if (strcmp(proto1, proto2) != 0) {
547		✗	av_log(h, AV_LOG_INFO, "Cannot reuse HTTP connection for different protocol %s vs %s\n",
548			proto1, proto2);
549		✗	return AVERROR(EINVAL);
550			}
551		✗	if (port1 != port2 || strncmp(hostname1, hostname2, sizeof(hostname2)) != 0) {
552		✗	av_log(h, AV_LOG_INFO, "Cannot reuse HTTP connection for different host: %s:%d != %s:%d\n",
553			hostname1, port1,
554			hostname2, port2
555			);
556		✗	return AVERROR(EINVAL);
557			}
558
559		✗	if (!s->end_chunked_post) {
560		✗	ret = http_shutdown(h, h->flags);
561		✗	if (ret < 0)
562		✗	return ret;
563			}
564
565		✗	if (s->willclose)
566		✗	return AVERROR_EOF;
567
568		✗	s->end_chunked_post = 0;
569		✗	s->chunkend = 0;
570		✗	s->off = 0;
571		✗	s->icy_data_read = 0;
572
573		✗	av_free(s->location);
574		✗	s->location = av_strdup(uri);
575		✗	if (!s->location)
576		✗	return AVERROR(ENOMEM);
577
578		✗	av_free(s->uri);
579		✗	s->uri = av_strdup(uri);
580		✗	if (!s->uri)
581		✗	return AVERROR(ENOMEM);
582
583		✗	if ((ret = av_opt_set_dict(s, opts)) < 0)
584		✗	return ret;
585
586		✗	av_log(s, AV_LOG_INFO, "Opening \'%s\' for %s\n", uri, h->flags & AVIO_FLAG_WRITE ? "writing" : "reading");
587		✗	ret = http_open_cnx(h, &options);
588		✗	av_dict_free(&options);
589		✗	return ret;
590			}
591
592		✗	int ff_http_averror(int status_code, int default_averror)
593			{
594		✗	switch (status_code) {
595		✗	case 400: return AVERROR_HTTP_BAD_REQUEST;
596		✗	case 401: return AVERROR_HTTP_UNAUTHORIZED;
597		✗	case 403: return AVERROR_HTTP_FORBIDDEN;
598		✗	case 404: return AVERROR_HTTP_NOT_FOUND;
599		✗	case 429: return AVERROR_HTTP_TOO_MANY_REQUESTS;
600		✗	default: break;
601			}
602		✗	if (status_code >= 400 && status_code <= 499)
603		✗	return AVERROR_HTTP_OTHER_4XX;
604		✗	else if (status_code >= 500)
605		✗	return AVERROR_HTTP_SERVER_ERROR;
606			else
607		✗	return default_averror;
608			}
609
610		✗	const char* ff_http_get_new_location(URLContext *h)
611			{
612		✗	HTTPContext *s = h->priv_data;
613		✗	return s->new_location;
614			}
615
616		✗	static int http_write_reply(URLContext* h, int status_code)
617			{
618		✗	int ret, body = 0, reply_code, message_len;
619			const char *reply_text, *content_type;
620		✗	HTTPContext *s = h->priv_data;
621			char message[BUFFER_SIZE];
622		✗	content_type = "text/plain";
623
624		✗	if (status_code < 0)
625		✗	body = 1;
626		✗	switch (status_code) {
627		✗	case AVERROR_HTTP_BAD_REQUEST:
628			case 400:
629		✗	reply_code = 400;
630		✗	reply_text = "Bad Request";
631		✗	break;
632		✗	case AVERROR_HTTP_FORBIDDEN:
633			case 403:
634		✗	reply_code = 403;
635		✗	reply_text = "Forbidden";
636		✗	break;
637		✗	case AVERROR_HTTP_NOT_FOUND:
638			case 404:
639		✗	reply_code = 404;
640		✗	reply_text = "Not Found";
641		✗	break;
642		✗	case AVERROR_HTTP_TOO_MANY_REQUESTS:
643			case 429:
644		✗	reply_code = 429;
645		✗	reply_text = "Too Many Requests";
646		✗	break;
647		✗	case 200:
648		✗	reply_code = 200;
649		✗	reply_text = "OK";
650		✗	content_type = s->content_type ? s->content_type : "application/octet-stream";
651		✗	break;
652		✗	case AVERROR_HTTP_SERVER_ERROR:
653			case 500:
654		✗	reply_code = 500;
655		✗	reply_text = "Internal server error";
656		✗	break;
657		✗	default:
658		✗	return AVERROR(EINVAL);
659			}
660		✗	if (body) {
661		✗	s->chunked_post = 0;
662		✗	message_len = snprintf(message, sizeof(message),
663			"HTTP/1.1 %03d %s\r\n"
664			"Content-Type: %s\r\n"
665			"Content-Length: %zu\r\n"
666			"%s"
667			"\r\n"
668			"%03d %s\r\n",
669			reply_code,
670			reply_text,
671			content_type,
672		✗	strlen(reply_text) + 6, // 3 digit status code + space + \r\n
673		✗	s->headers ? s->headers : "",
674			reply_code,
675			reply_text);
676			} else {
677		✗	s->chunked_post = 1;
678		✗	message_len = snprintf(message, sizeof(message),
679			"HTTP/1.1 %03d %s\r\n"
680			"Content-Type: %s\r\n"
681			"Transfer-Encoding: chunked\r\n"
682			"%s"
683			"\r\n",
684			reply_code,
685			reply_text,
686			content_type,
687		✗	s->headers ? s->headers : "");
688			}
689		✗	av_log(h, AV_LOG_TRACE, "HTTP reply header: \n%s----\n", message);
690		✗	if ((ret = ffurl_write(s->hd, message, message_len)) < 0)
691		✗	return ret;
692		✗	return 0;
693			}
694
695		✗	static void handle_http_errors(URLContext *h, int error)
696			{
697		✗	av_assert0(error < 0);
698		✗	http_write_reply(h, error);
699		✗	}
700
701		✗	static int http_handshake(URLContext *c)
702			{
703			int ret, err;
704		✗	HTTPContext *ch = c->priv_data;
705		✗	URLContext *cl = ch->hd;
706		✗	switch (ch->handshake_step) {
707		✗	case LOWER_PROTO:
708		✗	av_log(c, AV_LOG_TRACE, "Lower protocol\n");
709		✗	if ((ret = ffurl_handshake(cl)) > 0)
710		✗	return 2 + ret;
711		✗	if (ret < 0)
712		✗	return ret;
713		✗	ch->handshake_step = READ_HEADERS;
714		✗	ch->is_connected_server = 1;
715		✗	return 2;
716		✗	case READ_HEADERS:
717		✗	av_log(c, AV_LOG_TRACE, "Read headers\n");
718		✗	if ((err = http_read_header(c)) < 0) {
719		✗	handle_http_errors(c, err);
720		✗	return err;
721			}
722		✗	ch->handshake_step = WRITE_REPLY_HEADERS;
723		✗	return 1;
724		✗	case WRITE_REPLY_HEADERS:
725		✗	av_log(c, AV_LOG_TRACE, "Reply code: %d\n", ch->reply_code);
726		✗	if ((err = http_write_reply(c, ch->reply_code)) < 0)
727		✗	return err;
728		✗	ch->handshake_step = FINISH;
729		✗	return 1;
730		✗	case FINISH:
731		✗	return 0;
732			}
733			// this should never be reached.
734		✗	return AVERROR(EINVAL);
735			}
736
737		✗	static int http_listen(URLContext *h, const char *uri, int flags,
738			AVDictionary **options) {
739		✗	HTTPContext *s = h->priv_data;
740			int ret;
741			char hostname[1024], proto[10];
742			char lower_url[100];
743		✗	const char *lower_proto = "tcp";
744			int port;
745		✗	av_url_split(proto, sizeof(proto), NULL, 0, hostname, sizeof(hostname), &port,
746			NULL, 0, uri);
747		✗	if (!strcmp(proto, "https"))
748		✗	lower_proto = "tls";
749		✗	ff_url_join(lower_url, sizeof(lower_url), lower_proto, NULL, hostname, port,
750			NULL);
751		✗	if ((ret = av_dict_set_int(options, "listen", s->listen, 0)) < 0)
752		✗	goto fail;
753		✗	if ((ret = ffurl_open_whitelist(&s->hd, lower_url, AVIO_FLAG_READ_WRITE,
754		✗	&h->interrupt_callback, options,
755			h->protocol_whitelist, h->protocol_blacklist, h
756			)) < 0)
757		✗	goto fail;
758		✗	s->handshake_step = LOWER_PROTO;
759		✗	if (s->listen == HTTP_SINGLE) { /* single client */
760		✗	s->reply_code = 200;
761		✗	while ((ret = http_handshake(h)) > 0);
762			}
763		✗	fail:
764		✗	av_dict_free(&s->chained_options);
765		✗	av_dict_free(&s->cookie_dict);
766		✗	return ret;
767			}
768
769		✗	static int http_open(URLContext *h, const char *uri, int flags,
770			AVDictionary **options)
771			{
772		✗	HTTPContext *s = h->priv_data;
773			int ret;
774
775		✗	if( s->seekable == 1 )
776		✗	h->is_streamed = 0;
777			else
778		✗	h->is_streamed = 1;
779
780		✗	s->initial_requests = s->seekable != 0 && s->initial_request_size > 0;
781		✗	s->filesize = UINT64_MAX;
782
783		✗	s->location = av_strdup(uri);
784		✗	if (!s->location)
785		✗	return AVERROR(ENOMEM);
786
787		✗	s->uri = av_strdup(uri);
788		✗	if (!s->uri)
789		✗	return AVERROR(ENOMEM);
790
791		✗	if (options)
792		✗	av_dict_copy(&s->chained_options, *options, 0);
793
794		✗	if (s->headers) {
795		✗	int len = strlen(s->headers);
796		✗	if (len < 2 || strcmp("\r\n", s->headers + len - 2)) {
797		✗	av_log(h, AV_LOG_WARNING,
798			"No trailing CRLF found in HTTP header. Adding it.\n");
799		✗	ret = av_reallocp(&s->headers, len + 3);
800		✗	if (ret < 0)
801		✗	goto bail_out;
802		✗	s->headers[len] = '\r';
803		✗	s->headers[len + 1] = '\n';
804		✗	s->headers[len + 2] = '\0';
805			}
806			}
807
808		✗	if (s->listen) {
809		✗	return http_listen(h, uri, flags, options);
810			}
811		✗	ret = http_open_cnx(h, options);
812		✗	bail_out:
813		✗	if (ret < 0) {
814		✗	av_dict_free(&s->chained_options);
815		✗	av_dict_free(&s->cookie_dict);
816		✗	av_dict_free(&s->redirect_cache);
817		✗	av_freep(&s->new_location);
818		✗	av_freep(&s->uri);
819			}
820		✗	return ret;
821			}
822
823		✗	static int http_accept(URLContext *s, URLContext **c)
824			{
825			int ret;
826		✗	HTTPContext *sc = s->priv_data;
827			HTTPContext *cc;
828		✗	URLContext *sl = sc->hd;
829		✗	URLContext *cl = NULL;
830
831		✗	av_assert0(sc->listen);
832		✗	if ((ret = ffurl_alloc(c, s->filename, s->flags, &sl->interrupt_callback)) < 0)
833		✗	goto fail;
834		✗	cc = (*c)->priv_data;
835		✗	if ((ret = ffurl_accept(sl, &cl)) < 0)
836		✗	goto fail;
837		✗	cc->hd = cl;
838		✗	cc->is_multi_client = 1;
839		✗	return 0;
840		✗	fail:
841		✗	if (c) {
842		✗	ffurl_closep(c);
843			}
844		✗	return ret;
845			}
846
847		✗	static int http_getc(HTTPContext *s)
848			{
849			int len;
850		✗	if (s->buf_ptr >= s->buf_end) {
851		✗	len = ffurl_read(s->hd, s->buffer, BUFFER_SIZE);
852		✗	if (len < 0) {
853		✗	return len;
854		✗	} else if (len == 0) {
855		✗	return AVERROR_EOF;
856			} else {
857		✗	s->buf_ptr = s->buffer;
858		✗	s->buf_end = s->buffer + len;
859			}
860			}
861		✗	return *s->buf_ptr++;
862			}
863
864		✗	static int http_get_line(HTTPContext *s, char *line, int line_size)
865			{
866			int ch;
867			char *q;
868
869		✗	q = line;
870			for (;;) {
871		✗	ch = http_getc(s);
872		✗	if (ch < 0)
873		✗	return ch;
874		✗	if (ch == '\n') {
875			/* process line */
876		✗	if (q > line && q[-1] == '\r')
877		✗	q--;
878		✗	*q = '\0';
879
880		✗	return 0;
881			} else {
882		✗	if ((q - line) < line_size - 1)
883		✗	*q++ = ch;
884			}
885			}
886			}
887
888		✗	static int check_http_code(URLContext *h, int http_code, const char *end)
889			{
890		✗	HTTPContext *s = h->priv_data;
891			/* error codes are 4xx and 5xx, but regard 401 as a success, so we
892			* don't abort until all headers have been parsed. */
893		✗	if (http_code >= 400 && http_code < 600 &&
894		✗	(http_code != 401 || s->auth_state.auth_type != HTTP_AUTH_NONE) &&
895		✗	(http_code != 407 || s->proxy_auth_state.auth_type != HTTP_AUTH_NONE)) {
896		✗	end += strspn(end, SPACE_CHARS);
897		✗	av_log(h, AV_LOG_WARNING, "HTTP error %d %s\n", http_code, end);
898		✗	return ff_http_averror(http_code, AVERROR(EIO));
899			}
900		✗	return 0;
901			}
902
903		✗	static int parse_location(HTTPContext *s, const char *p)
904			{
905			char redirected_location[MAX_URL_SIZE];
906		✗	ff_make_absolute_url(redirected_location, sizeof(redirected_location),
907		✗	s->location, p);
908		✗	av_freep(&s->new_location);
909		✗	s->new_location = av_strdup(redirected_location);
910		✗	if (!s->new_location)
911		✗	return AVERROR(ENOMEM);
912		✗	return 0;
913			}
914
915			/* "bytes $from-$to/$document_size" */
916		✗	static void parse_content_range(URLContext *h, const char *p)
917			{
918		✗	HTTPContext *s = h->priv_data;
919			const char *slash, *end;
920
921		✗	if (!strncmp(p, "bytes ", 6)) {
922		✗	p += 6;
923		✗	s->off = strtoull(p, NULL, 10);
924		✗	if ((end = strchr(p, '-')) && strlen(end) > 0)
925		✗	s->range_end = strtoull(end + 1, NULL, 10) + 1;
926		✗	if ((slash = strchr(p, '/')) && strlen(slash) > 0)
927		✗	s->filesize_from_content_range = strtoull(slash + 1, NULL, 10);
928			}
929		✗	if (s->seekable == -1 && (!s->is_akamai || s->filesize != 2147483647))
930		✗	h->is_streamed = 0; /* we _can_ in fact seek */
931		✗	}
932
933		✗	static int parse_content_encoding(URLContext *h, const char *p)
934			{
935		✗	if (!av_strncasecmp(p, "gzip", 4) ||
936		✗	!av_strncasecmp(p, "deflate", 7)) {
937			#if CONFIG_ZLIB
938		✗	HTTPContext *s = h->priv_data;
939
940		✗	s->compressed = 1;
941		✗	inflateEnd(&s->inflate_stream);
942		✗	if (inflateInit2(&s->inflate_stream, 32 + 15) != Z_OK) {
943		✗	av_log(h, AV_LOG_WARNING, "Error during zlib initialisation: %s\n",
944			s->inflate_stream.msg);
945		✗	return AVERROR(ENOSYS);
946			}
947		✗	if (zlibCompileFlags() & (1 << 17)) {
948		✗	av_log(h, AV_LOG_WARNING,
949			"Your zlib was compiled without gzip support.\n");
950		✗	return AVERROR(ENOSYS);
951			}
952			#else
953			av_log(h, AV_LOG_WARNING,
954			"Compressed (%s) content, need zlib with gzip support\n", p);
955			return AVERROR(ENOSYS);
956			#endif /* CONFIG_ZLIB */
957		✗	} else if (!av_strncasecmp(p, "identity", 8)) {
958			// The normal, no-encoding case (although servers shouldn't include
959			// the header at all if this is the case).
960			} else {
961		✗	av_log(h, AV_LOG_WARNING, "Unknown content coding: %s\n", p);
962			}
963		✗	return 0;
964			}
965
966			// Concat all Icy- header lines
967		✗	static int parse_icy(HTTPContext *s, const char *tag, const char *p)
968			{
969		✗	int len = 4 + strlen(p) + strlen(tag);
970		✗	int is_first = !s->icy_metadata_headers;
971			int ret;
972
973		✗	av_dict_set(&s->metadata, tag, p, 0);
974
975		✗	if (s->icy_metadata_headers)
976		✗	len += strlen(s->icy_metadata_headers);
977
978		✗	if ((ret = av_reallocp(&s->icy_metadata_headers, len)) < 0)
979		✗	return ret;
980
981		✗	if (is_first)
982		✗	*s->icy_metadata_headers = '\0';
983
984		✗	av_strlcatf(s->icy_metadata_headers, len, "%s: %s\n", tag, p);
985
986		✗	return 0;
987			}
988
989		✗	static int parse_http_date(const char *date_str, struct tm *buf)
990			{
991			char date_buf[MAX_DATE_LEN];
992		✗	int i, j, date_buf_len = MAX_DATE_LEN-1;
993			char *date;
994
995			// strip off any punctuation or whitespace
996		✗	for (i = 0, j = 0; date_str[i] != '\0' && j < date_buf_len; i++) {
997		✗	if ((date_str[i] >= '0' && date_str[i] <= '9') ||
998		✗	(date_str[i] >= 'A' && date_str[i] <= 'Z') ||
999		✗	(date_str[i] >= 'a' && date_str[i] <= 'z')) {
1000		✗	date_buf[j] = date_str[i];
1001		✗	j++;
1002			}
1003			}
1004		✗	date_buf[j] = '\0';
1005		✗	date = date_buf;
1006
1007			// move the string beyond the day of week
1008		✗	while ((*date < '0' || *date > '9') && *date != '\0')
1009		✗	date++;
1010
1011		✗	return av_small_strptime(date, "%d%b%Y%H%M%S", buf) ? 0 : AVERROR(EINVAL);
1012			}
1013
1014		✗	static int parse_set_cookie(const char *set_cookie, AVDictionary **dict)
1015			{
1016			char *param, *next_param, *cstr, *back;
1017		✗	char *saveptr = NULL;
1018
1019		✗	if (!set_cookie[0])
1020		✗	return 0;
1021
1022		✗	if (!(cstr = av_strdup(set_cookie)))
1023		✗	return AVERROR(EINVAL);
1024
1025			// strip any trailing whitespace
1026		✗	back = &cstr[strlen(cstr)-1];
1027		✗	while (strchr(WHITESPACES, *back)) {
1028		✗	*back='\0';
1029		✗	if (back == cstr)
1030		✗	break;
1031		✗	back--;
1032			}
1033
1034		✗	next_param = cstr;
1035		✗	while ((param = av_strtok(next_param, ";", &saveptr))) {
1036			char *name, *value;
1037		✗	next_param = NULL;
1038		✗	param += strspn(param, WHITESPACES);
1039		✗	if ((name = av_strtok(param, "=", &value))) {
1040		✗	if (av_dict_set(dict, name, value, 0) < 0) {
1041		✗	av_free(cstr);
1042		✗	return -1;
1043			}
1044			}
1045			}
1046
1047		✗	av_free(cstr);
1048		✗	return 0;
1049			}
1050
1051		✗	static int parse_cookie(HTTPContext *s, const char *p, AVDictionary **cookies)
1052			{
1053		✗	AVDictionary *new_params = NULL;
1054			const AVDictionaryEntry *e, *cookie_entry;
1055			char *eql, *name;
1056
1057			// ensure the cookie is parsable
1058		✗	if (parse_set_cookie(p, &new_params))
1059		✗	return -1;
1060
1061			// if there is no cookie value there is nothing to parse
1062		✗	cookie_entry = av_dict_iterate(new_params, NULL);
1063		✗	if (!cookie_entry || !cookie_entry->value) {
1064		✗	av_dict_free(&new_params);
1065		✗	return -1;
1066			}
1067
1068			// ensure the cookie is not expired or older than an existing value
1069		✗	if ((e = av_dict_get(new_params, "expires", NULL, 0)) && e->value) {
1070		✗	struct tm new_tm = {0};
1071		✗	if (!parse_http_date(e->value, &new_tm)) {
1072			AVDictionaryEntry *e2;
1073
1074			// if the cookie has already expired ignore it
1075		✗	if (av_timegm(&new_tm) < av_gettime() / 1000000) {
1076		✗	av_dict_free(&new_params);
1077		✗	return 0;
1078			}
1079
1080			// only replace an older cookie with the same name
1081		✗	e2 = av_dict_get(*cookies, cookie_entry->key, NULL, 0);
1082		✗	if (e2 && e2->value) {
1083		✗	AVDictionary *old_params = NULL;
1084		✗	if (!parse_set_cookie(p, &old_params)) {
1085		✗	e2 = av_dict_get(old_params, "expires", NULL, 0);
1086		✗	if (e2 && e2->value) {
1087		✗	struct tm old_tm = {0};
1088		✗	if (!parse_http_date(e->value, &old_tm)) {
1089		✗	if (av_timegm(&new_tm) < av_timegm(&old_tm)) {
1090		✗	av_dict_free(&new_params);
1091		✗	av_dict_free(&old_params);
1092		✗	return -1;
1093			}
1094			}
1095			}
1096			}
1097		✗	av_dict_free(&old_params);
1098			}
1099			}
1100			}
1101		✗	av_dict_free(&new_params);
1102
1103			// duplicate the cookie name (dict will dupe the value)
1104		✗	if (!(eql = strchr(p, '='))) return AVERROR(EINVAL);
1105		✗	if (!(name = av_strndup(p, eql - p))) return AVERROR(ENOMEM);
1106
1107			// add the cookie to the dictionary
1108		✗	av_dict_set(cookies, name, eql, AV_DICT_DONT_STRDUP_KEY);
1109
1110		✗	return 0;
1111			}
1112
1113		✗	static int cookie_string(AVDictionary *dict, char **cookies)
1114			{
1115		✗	const AVDictionaryEntry *e = NULL;
1116		✗	int len = 1;
1117
1118			// determine how much memory is needed for the cookies string
1119		✗	while ((e = av_dict_iterate(dict, e)))
1120		✗	len += strlen(e->key) + strlen(e->value) + 1;
1121
1122			// reallocate the cookies
1123		✗	e = NULL;
1124		✗	if (*cookies) av_free(*cookies);
1125		✗	*cookies = av_malloc(len);
1126		✗	if (!*cookies) return AVERROR(ENOMEM);
1127		✗	*cookies[0] = '\0';
1128
1129			// write out the cookies
1130		✗	while ((e = av_dict_iterate(dict, e)))
1131		✗	av_strlcatf(*cookies, len, "%s%s\n", e->key, e->value);
1132
1133		✗	return 0;
1134			}
1135
1136		✗	static void parse_expires(HTTPContext *s, const char *p)
1137			{
1138			struct tm tm;
1139
1140		✗	if (!parse_http_date(p, &tm)) {
1141		✗	s->expires = av_timegm(&tm);
1142			}
1143		✗	}
1144
1145		✗	static void parse_cache_control(HTTPContext *s, const char *p)
1146			{
1147			char *age;
1148			int offset;
1149
1150			/* give 'Expires' higher priority over 'Cache-Control' */
1151		✗	if (s->expires) {
1152		✗	return;
1153			}
1154
1155		✗	if (av_stristr(p, "no-cache") || av_stristr(p, "no-store")) {
1156		✗	s->expires = -1;
1157		✗	return;
1158			}
1159
1160		✗	age = av_stristr(p, "s-maxage=");
1161		✗	offset = 9;
1162		✗	if (!age) {
1163		✗	age = av_stristr(p, "max-age=");
1164		✗	offset = 8;
1165			}
1166
1167		✗	if (age) {
1168		✗	s->expires = time(NULL) + atoi(age + offset);
1169			}
1170			}
1171
1172		✗	static int process_line(URLContext *h, char *line, int line_count, int *parsed_http_code)
1173			{
1174		✗	HTTPContext *s = h->priv_data;
1175		✗	const char *auto_method = h->flags & AVIO_FLAG_READ ? "POST" : "GET";
1176			char *tag, *p, *end, *method, *resource, *version;
1177			int ret;
1178
1179			/* end of header */
1180		✗	if (line[0] == '\0') {
1181		✗	s->end_header = 1;
1182		✗	return 0;
1183			}
1184
1185		✗	p = line;
1186		✗	if (line_count == 0) {
1187		✗	if (s->is_connected_server) {
1188			// HTTP method
1189		✗	method = p;
1190		✗	while (*p && !av_isspace(*p))
1191		✗	p++;
1192		✗	*(p++) = '\0';
1193		✗	av_log(h, AV_LOG_TRACE, "Received method: %s\n", method);
1194		✗	if (s->method) {
1195		✗	if (av_strcasecmp(s->method, method)) {
1196		✗	av_log(h, AV_LOG_ERROR, "Received and expected HTTP method do not match. (%s expected, %s received)\n",
1197			s->method, method);
1198		✗	return ff_http_averror(400, AVERROR(EIO));
1199			}
1200			} else {
1201			// use autodetected HTTP method to expect
1202		✗	av_log(h, AV_LOG_TRACE, "Autodetected %s HTTP method\n", auto_method);
1203		✗	if (av_strcasecmp(auto_method, method)) {
1204		✗	av_log(h, AV_LOG_ERROR, "Received and autodetected HTTP method did not match "
1205			"(%s autodetected %s received)\n", auto_method, method);
1206		✗	return ff_http_averror(400, AVERROR(EIO));
1207			}
1208		✗	if (!(s->method = av_strdup(method)))
1209		✗	return AVERROR(ENOMEM);
1210			}
1211
1212			// HTTP resource
1213		✗	while (av_isspace(*p))
1214		✗	p++;
1215		✗	resource = p;
1216		✗	while (*p && !av_isspace(*p))
1217		✗	p++;
1218		✗	*(p++) = '\0';
1219		✗	av_log(h, AV_LOG_TRACE, "Requested resource: %s\n", resource);
1220		✗	if (!(s->resource = av_strdup(resource)))
1221		✗	return AVERROR(ENOMEM);
1222
1223			// HTTP version
1224		✗	while (av_isspace(*p))
1225		✗	p++;
1226		✗	version = p;
1227		✗	while (*p && !av_isspace(*p))
1228		✗	p++;
1229		✗	*p = '\0';
1230		✗	if (av_strncasecmp(version, "HTTP/", 5)) {
1231		✗	av_log(h, AV_LOG_ERROR, "Malformed HTTP version string.\n");
1232		✗	return ff_http_averror(400, AVERROR(EIO));
1233			}
1234		✗	av_log(h, AV_LOG_TRACE, "HTTP version string: %s\n", version);
1235			} else {
1236		✗	if (av_strncasecmp(p, "HTTP/1.0", 8) == 0)
1237		✗	s->willclose = 1;
1238		✗	while (*p != '/' && *p != '\0')
1239		✗	p++;
1240		✗	while (*p == '/')
1241		✗	p++;
1242		✗	av_freep(&s->http_version);
1243		✗	s->http_version = av_strndup(p, 3);
1244		✗	while (!av_isspace(*p) && *p != '\0')
1245		✗	p++;
1246		✗	while (av_isspace(*p))
1247		✗	p++;
1248		✗	s->http_code = strtol(p, &end, 10);
1249
1250		✗	av_log(h, AV_LOG_TRACE, "http_code=%d\n", s->http_code);
1251
1252		✗	*parsed_http_code = 1;
1253
1254		✗	if ((ret = check_http_code(h, s->http_code, end)) < 0)
1255		✗	return ret;
1256			}
1257			} else {
1258		✗	while (*p != '\0' && *p != ':')
1259		✗	p++;
1260		✗	if (*p != ':')
1261		✗	return 1;
1262
1263		✗	*p = '\0';
1264		✗	tag = line;
1265		✗	p++;
1266		✗	while (av_isspace(*p))
1267		✗	p++;
1268		✗	if (!av_strcasecmp(tag, "Location")) {
1269		✗	if ((ret = parse_location(s, p)) < 0)
1270		✗	return ret;
1271		✗	} else if (!av_strcasecmp(tag, "Content-Length") &&
1272		✗	s->filesize == UINT64_MAX) {
1273		✗	s->filesize = strtoull(p, NULL, 10);
1274		✗	} else if (!av_strcasecmp(tag, "Content-Range")) {
1275		✗	parse_content_range(h, p);
1276		✗	} else if (!av_strcasecmp(tag, "Accept-Ranges") &&
1277		✗	!strncmp(p, "bytes", 5) &&
1278		✗	s->seekable == -1) {
1279		✗	h->is_streamed = 0;
1280		✗	} else if (!av_strcasecmp(tag, "Transfer-Encoding") &&
1281		✗	!av_strncasecmp(p, "chunked", 7)) {
1282		✗	s->filesize = UINT64_MAX;
1283		✗	s->chunksize = 0;
1284		✗	} else if (!av_strcasecmp(tag, "WWW-Authenticate")) {
1285		✗	ff_http_auth_handle_header(&s->auth_state, tag, p);
1286		✗	} else if (!av_strcasecmp(tag, "Authentication-Info")) {
1287		✗	ff_http_auth_handle_header(&s->auth_state, tag, p);
1288		✗	} else if (!av_strcasecmp(tag, "Proxy-Authenticate")) {
1289		✗	ff_http_auth_handle_header(&s->proxy_auth_state, tag, p);
1290		✗	} else if (!av_strcasecmp(tag, "Connection")) {
1291		✗	if (!strcmp(p, "close"))
1292		✗	s->willclose = 1;
1293		✗	} else if (!av_strcasecmp(tag, "Server")) {
1294		✗	if (!av_strcasecmp(p, "AkamaiGHost")) {
1295		✗	s->is_akamai = 1;
1296		✗	} else if (!av_strncasecmp(p, "MediaGateway", 12)) {
1297		✗	s->is_mediagateway = 1;
1298			}
1299		✗	} else if (!av_strcasecmp(tag, "Content-Type")) {
1300		✗	av_free(s->mime_type);
1301		✗	s->mime_type = av_get_token((const char **)&p, ";");
1302		✗	} else if (!av_strcasecmp(tag, "Set-Cookie")) {
1303		✗	if (parse_cookie(s, p, &s->cookie_dict))
1304		✗	av_log(h, AV_LOG_WARNING, "Unable to parse '%s'\n", p);
1305		✗	} else if (!av_strcasecmp(tag, "Icy-MetaInt")) {
1306		✗	s->icy_metaint = strtoull(p, NULL, 10);
1307		✗	} else if (!av_strncasecmp(tag, "Icy-", 4)) {
1308		✗	if ((ret = parse_icy(s, tag, p)) < 0)
1309		✗	return ret;
1310		✗	} else if (!av_strcasecmp(tag, "Content-Encoding")) {
1311		✗	if ((ret = parse_content_encoding(h, p)) < 0)
1312		✗	return ret;
1313		✗	} else if (!av_strcasecmp(tag, "Expires")) {
1314		✗	parse_expires(s, p);
1315		✗	} else if (!av_strcasecmp(tag, "Cache-Control")) {
1316		✗	parse_cache_control(s, p);
1317		✗	} else if (!av_strcasecmp(tag, "Retry-After")) {
1318			/* The header can be either an integer that represents seconds, or a date. */
1319			struct tm tm;
1320		✗	int date_ret = parse_http_date(p, &tm);
1321		✗	if (!date_ret) {
1322		✗	time_t retry = av_timegm(&tm);
1323		✗	int64_t now = av_gettime() / 1000000;
1324		✗	int64_t diff = ((int64_t) retry) - now;
1325		✗	s->retry_after = (unsigned int) FFMAX(0, diff);
1326			} else {
1327		✗	s->retry_after = strtoul(p, NULL, 10);
1328			}
1329			}
1330			}
1331		✗	return 1;
1332			}
1333
1334			/**
1335			* Create a string containing cookie values for use as a HTTP cookie header
1336			* field value for a particular path and domain from the cookie values stored in
1337			* the HTTP protocol context. The cookie string is stored in *cookies, and may
1338			* be NULL if there are no valid cookies.
1339			*
1340			* @return a negative value if an error condition occurred, 0 otherwise
1341			*/
1342		✗	static int get_cookies(HTTPContext *s, char **cookies, const char *path,
1343			const char *domain)
1344			{
1345			// cookie strings will look like Set-Cookie header field values. Multiple
1346			// Set-Cookie fields will result in multiple values delimited by a newline
1347		✗	int ret = 0;
1348			char *cookie, *set_cookies, *next;
1349		✗	char *saveptr = NULL;
1350
1351			// destroy any cookies in the dictionary.
1352		✗	av_dict_free(&s->cookie_dict);
1353
1354		✗	if (!s->cookies)
1355		✗	return 0;
1356
1357		✗	next = set_cookies = av_strdup(s->cookies);
1358		✗	if (!next)
1359		✗	return AVERROR(ENOMEM);
1360
1361		✗	*cookies = NULL;
1362		✗	while ((cookie = av_strtok(next, "\n", &saveptr)) && !ret) {
1363		✗	AVDictionary *cookie_params = NULL;
1364			const AVDictionaryEntry *cookie_entry, *e;
1365
1366		✗	next = NULL;
1367			// store the cookie in a dict in case it is updated in the response
1368		✗	if (parse_cookie(s, cookie, &s->cookie_dict))
1369		✗	av_log(s, AV_LOG_WARNING, "Unable to parse '%s'\n", cookie);
1370
1371			// continue on to the next cookie if this one cannot be parsed
1372		✗	if (parse_set_cookie(cookie, &cookie_params))
1373		✗	goto skip_cookie;
1374
1375			// if the cookie has no value, skip it
1376		✗	cookie_entry = av_dict_iterate(cookie_params, NULL);
1377		✗	if (!cookie_entry || !cookie_entry->value)
1378		✗	goto skip_cookie;
1379
1380			// if the cookie has expired, don't add it
1381		✗	if ((e = av_dict_get(cookie_params, "expires", NULL, 0)) && e->value) {
1382		✗	struct tm tm_buf = {0};
1383		✗	if (!parse_http_date(e->value, &tm_buf)) {
1384		✗	if (av_timegm(&tm_buf) < av_gettime() / 1000000)
1385		✗	goto skip_cookie;
1386			}
1387			}
1388
1389			// if no domain in the cookie assume it applied to this request
1390		✗	if ((e = av_dict_get(cookie_params, "domain", NULL, 0)) && e->value) {
1391			// find the offset comparison is on the min domain (b.com, not a.b.com)
1392		✗	int domain_offset = strlen(domain) - strlen(e->value);
1393		✗	if (domain_offset < 0)
1394		✗	goto skip_cookie;
1395
1396			// match the cookie domain
1397		✗	if (av_strcasecmp(&domain[domain_offset], e->value))
1398		✗	goto skip_cookie;
1399			}
1400
1401			// if a cookie path is provided, ensure the request path is within that path
1402		✗	e = av_dict_get(cookie_params, "path", NULL, 0);
1403		✗	if (e && av_strncasecmp(path, e->value, strlen(e->value)))
1404		✗	goto skip_cookie;
1405
1406			// cookie parameters match, so copy the value
1407		✗	if (!*cookies) {
1408		✗	*cookies = av_asprintf("%s=%s", cookie_entry->key, cookie_entry->value);
1409			} else {
1410		✗	char *tmp = *cookies;
1411		✗	*cookies = av_asprintf("%s; %s=%s", tmp, cookie_entry->key, cookie_entry->value);
1412		✗	av_free(tmp);
1413			}
1414		✗	if (!*cookies)
1415		✗	ret = AVERROR(ENOMEM);
1416
1417		✗	skip_cookie:
1418		✗	av_dict_free(&cookie_params);
1419			}
1420
1421		✗	av_free(set_cookies);
1422
1423		✗	return ret;
1424			}
1425
1426		✗	static inline int has_header(const char *str, const char *header)
1427			{
1428			/* header + 2 to skip over CRLF prefix. (make sure you have one!) */
1429		✗	if (!str)
1430		✗	return 0;
1431		✗	return av_stristart(str, header + 2, NULL) || av_stristr(str, header);
1432			}
1433
1434		✗	static int http_read_header(URLContext *h)
1435			{
1436		✗	HTTPContext *s = h->priv_data;
1437			char line[MAX_URL_SIZE];
1438		✗	int err = 0, http_err = 0;
1439
1440		✗	av_freep(&s->new_location);
1441		✗	s->expires = 0;
1442		✗	s->chunksize = UINT64_MAX;
1443		✗	s->filesize_from_content_range = UINT64_MAX;
1444
1445		✗	for (;;) {
1446		✗	int parsed_http_code = 0;
1447
1448		✗	if ((err = http_get_line(s, line, sizeof(line))) < 0) {
1449		✗	av_log(h, AV_LOG_ERROR, "Error reading HTTP response: %s\n",
1450		✗	av_err2str(err));
1451		✗	return err;
1452			}
1453
1454		✗	av_log(h, AV_LOG_TRACE, "header='%s'\n", line);
1455
1456		✗	err = process_line(h, line, s->line_count, &parsed_http_code);
1457		✗	if (err < 0) {
1458		✗	if (parsed_http_code) {
1459		✗	http_err = err;
1460			} else {
1461			/* Prefer to return HTTP code error if we've already seen one. */
1462		✗	if (http_err)
1463		✗	return http_err;
1464			else
1465		✗	return err;
1466			}
1467			}
1468		✗	if (err == 0)
1469		✗	break;
1470		✗	s->line_count++;
1471			}
1472		✗	if (http_err)
1473		✗	return http_err;
1474
1475			// filesize from Content-Range can always be used, even if using chunked Transfer-Encoding
1476		✗	if (s->filesize_from_content_range != UINT64_MAX)
1477		✗	s->filesize = s->filesize_from_content_range;
1478
1479		✗	if (s->seekable == -1 && s->is_mediagateway && s->filesize == 2000000000)
1480		✗	h->is_streamed = 1; /* we can in fact _not_ seek */
1481
1482		✗	if (h->is_streamed)
1483		✗	s->initial_requests = 0; /* unable to use partial requests */
1484
1485			// add any new cookies into the existing cookie string
1486		✗	cookie_string(s->cookie_dict, &s->cookies);
1487		✗	av_dict_free(&s->cookie_dict);
1488
1489		✗	return err;
1490			}
1491
1492			/**
1493			* Escape unsafe characters in path in order to pass them safely to the HTTP
1494			* request. Insipred by the algorithm in GNU wget:
1495			* - escape "%" characters not followed by two hex digits
1496			* - escape all "unsafe" characters except which are also "reserved"
1497			* - pass through everything else
1498			*/
1499		✗	static void bprint_escaped_path(AVBPrint *bp, const char *path)
1500			{
1501			#define NEEDS_ESCAPE(ch) \
1502			((ch) <= ' ' || (ch) >= '\x7f' || \
1503			(ch) == '"' || (ch) == '%' || (ch) == '<' || (ch) == '>' || (ch) == '\\' || \
1504			(ch) == '^' || (ch) == '`' || (ch) == '{' || (ch) == '}' || (ch) == '|')
1505		✗	while (*path) {
1506			char buf[1024];
1507		✗	char *q = buf;
1508		✗	while (*path && q - buf < sizeof(buf) - 4) {
1509		✗	if (path[0] == '%' && av_isxdigit(path[1]) && av_isxdigit(path[2])) {
1510		✗	*q++ = *path++;
1511		✗	*q++ = *path++;
1512		✗	*q++ = *path++;
1513		✗	} else if (NEEDS_ESCAPE(*path)) {
1514		✗	q += snprintf(q, 4, "%%%02X", (uint8_t)*path++);
1515			} else {
1516		✗	*q++ = *path++;
1517			}
1518			}
1519		✗	av_bprint_append_data(bp, buf, q - buf);
1520			}
1521		✗	}
1522
1523		✗	static int http_connect(URLContext *h, const char *path, const char *local_path,
1524			const char *hoststr, const char *auth,
1525			const char *proxyauth)
1526			{
1527		✗	HTTPContext *s = h->priv_data;
1528			int post, err;
1529			AVBPrint request;
1530		✗	char *authstr = NULL, *proxyauthstr = NULL;
1531		✗	uint64_t off = s->off;
1532			const char *method;
1533		✗	int send_expect_100 = 0;
1534
1535		✗	av_bprint_init_for_buffer(&request, s->buffer, sizeof(s->buffer));
1536
1537			/* send http header */
1538		✗	post = h->flags & AVIO_FLAG_WRITE;
1539
1540		✗	if (s->post_data) {
1541			/* force POST method and disable chunked encoding when
1542			* custom HTTP post data is set */
1543		✗	post = 1;
1544		✗	s->chunked_post = 0;
1545			}
1546
1547		✗	if (s->method)
1548		✗	method = s->method;
1549			else
1550		✗	method = post ? "POST" : "GET";
1551
1552		✗	authstr = ff_http_auth_create_response(&s->auth_state, auth,
1553			local_path, method);
1554		✗	proxyauthstr = ff_http_auth_create_response(&s->proxy_auth_state, proxyauth,
1555			local_path, method);
1556
1557		✗	if (post && !s->post_data) {
1558		✗	if (s->send_expect_100 != -1) {
1559		✗	send_expect_100 = s->send_expect_100;
1560			} else {
1561		✗	send_expect_100 = 0;
1562			/* The user has supplied authentication but we don't know the auth type,
1563			* send Expect: 100-continue to get the 401 response including the
1564			* WWW-Authenticate header, or an 100 continue if no auth actually
1565			* is needed. */
1566		✗	if (auth && *auth &&
1567		✗	s->auth_state.auth_type == HTTP_AUTH_NONE &&
1568		✗	s->http_code != 401)
1569		✗	send_expect_100 = 1;
1570			}
1571			}
1572
1573		✗	av_bprintf(&request, "%s ", method);
1574		✗	bprint_escaped_path(&request, path);
1575		✗	av_bprintf(&request, " HTTP/1.1\r\n");
1576
1577		✗	if (post && s->chunked_post)
1578		✗	av_bprintf(&request, "Transfer-Encoding: chunked\r\n");
1579			/* set default headers if needed */
1580		✗	if (!has_header(s->headers, "\r\nUser-Agent: "))
1581		✗	av_bprintf(&request, "User-Agent: %s\r\n", s->user_agent);
1582		✗	if (s->referer) {
1583			/* set default headers if needed */
1584		✗	if (!has_header(s->headers, "\r\nReferer: "))
1585		✗	av_bprintf(&request, "Referer: %s\r\n", s->referer);
1586			}
1587		✗	if (!has_header(s->headers, "\r\nAccept: "))
1588		✗	av_bprintf(&request, "Accept: */*\r\n");
1589			// Note: we send the Range header on purpose, even when we're probing,
1590			// since it allows us to detect more reliably if a (non-conforming)
1591			// server supports seeking by analysing the reply headers.
1592		✗	if (!has_header(s->headers, "\r\nRange: ") && !post && (s->off > 0 || s->end_off || s->seekable != 0)) {
1593		✗	av_bprintf(&request, "Range: bytes=%"PRIu64"-", s->off);
1594		✗	if ((s->initial_requests || s->request_size) && s->seekable != 0) {
1595		✗	uint64_t req_size = s->initial_requests ? s->initial_request_size : s->request_size;
1596		✗	uint64_t target_off = s->off + req_size;
1597		✗	if (target_off < s->off) /* overflow */
1598		✗	target_off = UINT64_MAX;
1599		✗	if (s->end_off)
1600		✗	target_off = FFMIN(target_off, s->end_off);
1601		✗	if (target_off != UINT64_MAX)
1602		✗	av_bprintf(&request, "%"PRId64, target_off - 1);
1603		✗	} else if (s->end_off)
1604		✗	av_bprintf(&request, "%"PRId64, s->end_off - 1);
1605		✗	av_bprintf(&request, "\r\n");
1606			}
1607		✗	if (send_expect_100 && !has_header(s->headers, "\r\nExpect: "))
1608		✗	av_bprintf(&request, "Expect: 100-continue\r\n");
1609
1610		✗	if (!has_header(s->headers, "\r\nConnection: "))
1611		✗	av_bprintf(&request, "Connection: %s\r\n", s->multiple_requests ? "keep-alive" : "close");
1612
1613		✗	if (!has_header(s->headers, "\r\nHost: "))
1614		✗	av_bprintf(&request, "Host: %s\r\n", hoststr);
1615		✗	if (!has_header(s->headers, "\r\nContent-Length: ") && s->post_data)
1616		✗	av_bprintf(&request, "Content-Length: %d\r\n", s->post_datalen);
1617
1618		✗	if (!has_header(s->headers, "\r\nContent-Type: ") && s->content_type)
1619		✗	av_bprintf(&request, "Content-Type: %s\r\n", s->content_type);
1620		✗	if (!has_header(s->headers, "\r\nCookie: ") && s->cookies) {
1621		✗	char *cookies = NULL;
1622		✗	if (!get_cookies(s, &cookies, path, hoststr) && cookies) {
1623		✗	av_bprintf(&request, "Cookie: %s\r\n", cookies);
1624		✗	av_free(cookies);
1625			}
1626			}
1627		✗	if (!has_header(s->headers, "\r\nIcy-MetaData: ") && s->icy)
1628		✗	av_bprintf(&request, "Icy-MetaData: 1\r\n");
1629
1630			/* now add in custom headers */
1631		✗	if (s->headers)
1632		✗	av_bprintf(&request, "%s", s->headers);
1633
1634		✗	if (authstr)
1635		✗	av_bprintf(&request, "%s", authstr);
1636		✗	if (proxyauthstr)
1637		✗	av_bprintf(&request, "Proxy-%s", proxyauthstr);
1638		✗	av_bprintf(&request, "\r\n");
1639
1640		✗	av_log(h, AV_LOG_DEBUG, "request: %s\n", request.str);
1641
1642		✗	if (!av_bprint_is_complete(&request)) {
1643		✗	av_log(h, AV_LOG_ERROR, "overlong headers\n");
1644		✗	err = AVERROR(EINVAL);
1645		✗	goto done;
1646			}
1647
1648		✗	if ((err = ffurl_write(s->hd, request.str, request.len)) < 0)
1649		✗	goto done;
1650
1651		✗	if (s->post_data)
1652		✗	if ((err = ffurl_write(s->hd, s->post_data, s->post_datalen)) < 0)
1653		✗	goto done;
1654
1655			/* init input buffer */
1656		✗	s->buf_ptr = s->buffer;
1657		✗	s->buf_end = s->buffer;
1658		✗	s->line_count = 0;
1659		✗	s->off = 0;
1660		✗	s->icy_data_read = 0;
1661		✗	s->filesize = UINT64_MAX;
1662		✗	s->willclose = 0;
1663		✗	s->end_chunked_post = 0;
1664		✗	s->end_header = 0;
1665			#if CONFIG_ZLIB
1666		✗	s->compressed = 0;
1667			#endif
1668		✗	if (post && !s->post_data && !send_expect_100) {
1669			/* Pretend that it did work. We didn't read any header yet, since
1670			* we've still to send the POST data, but the code calling this
1671			* function will check http_code after we return. */
1672		✗	s->http_code = 200;
1673		✗	err = 0;
1674		✗	goto done;
1675			}
1676
1677			/* wait for header */
1678		✗	int64_t latency = av_gettime();
1679		✗	err = http_read_header(h);
1680		✗	latency = av_gettime() - latency;
1681		✗	if (err < 0)
1682		✗	goto done;
1683
1684		✗	s->nb_requests++;
1685		✗	s->sum_latency += latency;
1686		✗	s->max_latency = FFMAX(s->max_latency, latency);
1687
1688		✗	if (s->new_location)
1689		✗	s->off = off;
1690
1691		✗	if (off != s->off) {
1692		✗	av_log(h, AV_LOG_ERROR,
1693			"Unexpected offset: expected %"PRIu64", got %"PRIu64"\n",
1694			off, s->off);
1695		✗	err = AVERROR(EIO);
1696		✗	goto done;
1697			}
1698
1699		✗	err = 0;
1700		✗	done:
1701		✗	av_freep(&authstr);
1702		✗	av_freep(&proxyauthstr);
1703		✗	return err;
1704			}
1705
1706		✗	static int http_buf_read(URLContext *h, uint8_t *buf, int size)
1707			{
1708		✗	HTTPContext *s = h->priv_data;
1709			int len;
1710
1711		✗	if (!s->hd)
1712		✗	return AVERROR(EIO);
1713
1714		✗	if (s->chunksize != UINT64_MAX) {
1715		✗	if (s->chunkend) {
1716		✗	return AVERROR_EOF;
1717			}
1718		✗	if (!s->chunksize) {
1719			char line[32];
1720			int err;
1721
1722			do {
1723		✗	if ((err = http_get_line(s, line, sizeof(line))) < 0)
1724		✗	return err;
1725		✗	} while (!*line); /* skip CR LF from last chunk */
1726
1727		✗	s->chunksize = strtoull(line, NULL, 16);
1728
1729		✗	av_log(h, AV_LOG_TRACE,
1730			"Chunked encoding data size: %"PRIu64"\n",
1731			s->chunksize);
1732
1733		✗	if (!s->chunksize && s->multiple_requests) {
1734		✗	http_get_line(s, line, sizeof(line)); // read empty chunk
1735		✗	s->chunkend = 1;
1736		✗	return 0;
1737			}
1738		✗	else if (!s->chunksize) {
1739		✗	av_log(h, AV_LOG_DEBUG, "Last chunk received, closing conn\n");
1740		✗	ffurl_closep(&s->hd);
1741		✗	return 0;
1742			}
1743		✗	else if (s->chunksize == UINT64_MAX) {
1744		✗	av_log(h, AV_LOG_ERROR, "Invalid chunk size %"PRIu64"\n",
1745			s->chunksize);
1746		✗	return AVERROR(EINVAL);
1747			}
1748			}
1749		✗	size = FFMIN(size, s->chunksize);
1750			}
1751
1752			/* read bytes from input buffer first */
1753		✗	len = s->buf_end - s->buf_ptr;
1754		✗	if (len > 0) {
1755		✗	if (len > size)
1756		✗	len = size;
1757		✗	memcpy(buf, s->buf_ptr, len);
1758		✗	s->buf_ptr += len;
1759			} else {
1760		✗	uint64_t file_end = s->end_off ? s->end_off : s->filesize;
1761		✗	uint64_t target_end = s->range_end ? s->range_end : file_end;
1762		✗	if ((!s->willclose || s->chunksize == UINT64_MAX) && s->off >= file_end)
1763		✗	return AVERROR_EOF;
1764		✗	if (s->off == target_end && target_end < file_end)
1765		✗	return AVERROR(EAGAIN); /* reached end of content range */
1766		✗	len = ffurl_read(s->hd, buf, size);
1767		✗	if ((!len || len == AVERROR_EOF) &&
1768		✗	(!s->willclose || s->chunksize == UINT64_MAX) && s->off < target_end) {
1769		✗	av_log(h, AV_LOG_ERROR,
1770			"Stream ends prematurely at %"PRIu64", should be %"PRIu64"\n",
1771			s->off, target_end
1772			);
1773		✗	return AVERROR(EIO);
1774			}
1775			}
1776		✗	if (len > 0) {
1777		✗	s->off += len;
1778		✗	if (s->chunksize > 0 && s->chunksize != UINT64_MAX) {
1779		✗	av_assert0(s->chunksize >= len);
1780		✗	s->chunksize -= len;
1781			}
1782			}
1783		✗	return len;
1784			}
1785
1786			#if CONFIG_ZLIB
1787			#define DECOMPRESS_BUF_SIZE (256 * 1024)
1788		✗	static int http_buf_read_compressed(URLContext *h, uint8_t *buf, int size)
1789			{
1790		✗	HTTPContext *s = h->priv_data;
1791			int ret;
1792
1793		✗	if (!s->inflate_buffer) {
1794		✗	s->inflate_buffer = av_malloc(DECOMPRESS_BUF_SIZE);
1795		✗	if (!s->inflate_buffer)
1796		✗	return AVERROR(ENOMEM);
1797			}
1798
1799		✗	if (s->inflate_stream.avail_in == 0) {
1800		✗	int read = http_buf_read(h, s->inflate_buffer, DECOMPRESS_BUF_SIZE);
1801		✗	if (read <= 0)
1802		✗	return read;
1803		✗	s->inflate_stream.next_in = s->inflate_buffer;
1804		✗	s->inflate_stream.avail_in = read;
1805			}
1806
1807		✗	s->inflate_stream.avail_out = size;
1808		✗	s->inflate_stream.next_out = buf;
1809
1810		✗	ret = inflate(&s->inflate_stream, Z_SYNC_FLUSH);
1811		✗	if (ret != Z_OK && ret != Z_STREAM_END)
1812		✗	av_log(h, AV_LOG_WARNING, "inflate return value: %d, %s\n",
1813			ret, s->inflate_stream.msg);
1814
1815		✗	return size - s->inflate_stream.avail_out;
1816			}
1817			#endif /* CONFIG_ZLIB */
1818
1819			static int64_t http_seek_internal(URLContext *h, int64_t off, int whence, int force_reconnect);
1820
1821		✗	static int http_read_stream(URLContext *h, uint8_t *buf, int size)
1822			{
1823		✗	HTTPContext *s = h->priv_data;
1824			int err, read_ret;
1825			int64_t seek_ret;
1826		✗	int reconnect_delay = 0;
1827		✗	int reconnect_delay_total = 0;
1828		✗	int conn_attempts = 1;
1829
1830		✗	if (!s->hd)
1831		✗	return AVERROR_EOF;
1832
1833		✗	if (s->end_chunked_post && !s->end_header) {
1834		✗	err = http_read_header(h);
1835		✗	if (err < 0)
1836		✗	return err;
1837			}
1838
1839			#if CONFIG_ZLIB
1840		✗	if (s->compressed)
1841		✗	return http_buf_read_compressed(h, buf, size);
1842			#endif /* CONFIG_ZLIB */
1843
1844		✗	retry:
1845		✗	read_ret = http_buf_read(h, buf, size);
1846		✗	while (read_ret < 0) {
1847		✗	uint64_t target = h->is_streamed ? 0 : s->off;
1848		✗	bool is_premature = s->filesize > 0 && s->off < s->filesize;
1849
1850		✗	if (read_ret == AVERROR_EXIT)
1851		✗	break;
1852		✗	else if (read_ret == AVERROR(EAGAIN)) {
1853			/* send new request for more data on existing connection */
1854		✗	AVDictionary *options = NULL;
1855		✗	if (s->willclose)
1856		✗	ffurl_closep(&s->hd);
1857		✗	s->initial_requests = 0; /* continue streaming uninterrupted from now on */
1858		✗	read_ret = http_open_cnx(h, &options);
1859		✗	av_dict_free(&options);
1860		✗	if (read_ret == 0)
1861		✗	goto retry;
1862			}
1863
1864		✗	if (h->is_streamed && !s->reconnect_streamed)
1865		✗	break;
1866
1867		✗	if (!(s->reconnect && is_premature) &&
1868		✗	!(s->reconnect_at_eof && read_ret == AVERROR_EOF)) {
1869		✗	if (is_premature)
1870		✗	return AVERROR(EIO);
1871			else
1872		✗	break;
1873			}
1874
1875		✗	if (reconnect_delay > s->reconnect_delay_max || (s->reconnect_max_retries >= 0 && conn_attempts > s->reconnect_max_retries) ||
1876		✗	reconnect_delay_total > s->reconnect_delay_total_max)
1877		✗	return AVERROR(EIO);
1878
1879		✗	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));
1880		✗	err = ff_network_sleep_interruptible(1000U*1000*reconnect_delay, &h->interrupt_callback);
1881		✗	if (err != AVERROR(ETIMEDOUT))
1882		✗	return err;
1883		✗	reconnect_delay_total += reconnect_delay;
1884		✗	reconnect_delay = 1 + 2*reconnect_delay;
1885		✗	conn_attempts++;
1886		✗	seek_ret = http_seek_internal(h, target, SEEK_SET, 1);
1887		✗	if (seek_ret >= 0 && seek_ret != target) {
1888		✗	ffurl_closep(&s->hd);
1889		✗	av_log(h, AV_LOG_ERROR, "Failed to reconnect at %"PRIu64".\n", target);
1890		✗	return read_ret;
1891			}
1892
1893		✗	read_ret = http_buf_read(h, buf, size);
1894			}
1895
1896		✗	return read_ret;
1897			}
1898
1899			// Like http_read_stream(), but no short reads.
1900			// Assumes partial reads are an error.
1901		✗	static int http_read_stream_all(URLContext *h, uint8_t *buf, int size)
1902			{
1903		✗	int pos = 0;
1904		✗	while (pos < size) {
1905		✗	int len = http_read_stream(h, buf + pos, size - pos);
1906		✗	if (len < 0)
1907		✗	return len;
1908		✗	pos += len;
1909			}
1910		✗	return pos;
1911			}
1912
1913		✗	static void update_metadata(URLContext *h, char *data)
1914			{
1915			char *key;
1916			char *val;
1917			char *end;
1918		✗	char *next = data;
1919		✗	HTTPContext *s = h->priv_data;
1920
1921		✗	while (*next) {
1922		✗	key = next;
1923		✗	val = strstr(key, "='");
1924		✗	if (!val)
1925		✗	break;
1926		✗	end = strstr(val, "';");
1927		✗	if (!end)
1928		✗	break;
1929
1930		✗	*val = '\0';
1931		✗	*end = '\0';
1932		✗	val += 2;
1933
1934		✗	av_dict_set(&s->metadata, key, val, 0);
1935		✗	av_log(h, AV_LOG_VERBOSE, "Metadata update for %s: %s\n", key, val);
1936
1937		✗	next = end + 2;
1938			}
1939		✗	}
1940
1941		✗	static int store_icy(URLContext *h, int size)
1942			{
1943		✗	HTTPContext *s = h->priv_data;
1944			/* until next metadata packet */
1945			uint64_t remaining;
1946
1947		✗	if (s->icy_metaint < s->icy_data_read)
1948		✗	return AVERROR_INVALIDDATA;
1949		✗	remaining = s->icy_metaint - s->icy_data_read;
1950
1951		✗	if (!remaining) {
1952			/* The metadata packet is variable sized. It has a 1 byte header
1953			* which sets the length of the packet (divided by 16). If it's 0,
1954			* the metadata doesn't change. After the packet, icy_metaint bytes
1955			* of normal data follows. */
1956			uint8_t ch;
1957		✗	int len = http_read_stream_all(h, &ch, 1);
1958		✗	if (len < 0)
1959		✗	return len;
1960		✗	if (ch > 0) {
1961			char data[255 * 16 + 1];
1962			int ret;
1963		✗	len = ch * 16;
1964		✗	ret = http_read_stream_all(h, data, len);
1965		✗	if (ret < 0)
1966		✗	return ret;
1967		✗	data[len] = 0;
1968		✗	if ((ret = av_opt_set(s, "icy_metadata_packet", data, 0)) < 0)
1969		✗	return ret;
1970		✗	update_metadata(h, data);
1971			}
1972		✗	s->icy_data_read = 0;
1973		✗	remaining = s->icy_metaint;
1974			}
1975
1976		✗	return FFMIN(size, remaining);
1977			}
1978
1979		✗	static int http_read(URLContext *h, uint8_t *buf, int size)
1980			{
1981		✗	HTTPContext *s = h->priv_data;
1982
1983		✗	if (s->icy_metaint > 0) {
1984		✗	size = store_icy(h, size);
1985		✗	if (size < 0)
1986		✗	return size;
1987			}
1988
1989		✗	size = http_read_stream(h, buf, size);
1990		✗	if (size > 0)
1991		✗	s->icy_data_read += size;
1992		✗	return size;
1993			}
1994
1995			/* used only when posting data */
1996		✗	static int http_write(URLContext *h, const uint8_t *buf, int size)
1997			{
1998		✗	char temp[11] = ""; /* 32-bit hex + CRLF + nul */
1999			int ret;
2000		✗	char crlf[] = "\r\n";
2001		✗	HTTPContext *s = h->priv_data;
2002
2003		✗	if (!s->chunked_post) {
2004			/* non-chunked data is sent without any special encoding */
2005		✗	return ffurl_write(s->hd, buf, size);
2006			}
2007
2008			/* silently ignore zero-size data since chunk encoding that would
2009			* signal EOF */
2010		✗	if (size > 0) {
2011			/* upload data using chunked encoding */
2012		✗	snprintf(temp, sizeof(temp), "%x\r\n", size);
2013
2014		✗	if ((ret = ffurl_write(s->hd, temp, strlen(temp))) < 0 ||
2015		✗	(ret = ffurl_write(s->hd, buf, size)) < 0 ||
2016		✗	(ret = ffurl_write(s->hd, crlf, sizeof(crlf) - 1)) < 0)
2017		✗	return ret;
2018			}
2019		✗	return size;
2020			}
2021
2022		✗	static int http_shutdown(URLContext *h, int flags)
2023			{
2024		✗	int ret = 0;
2025		✗	char footer[] = "0\r\n\r\n";
2026		✗	HTTPContext *s = h->priv_data;
2027
2028			/* signal end of chunked encoding if used */
2029		✗	if (((flags & AVIO_FLAG_WRITE) && s->chunked_post) ||
2030		✗	((flags & AVIO_FLAG_READ) && s->chunked_post && s->listen)) {
2031		✗	ret = ffurl_write(s->hd, footer, sizeof(footer) - 1);
2032		✗	ret = ret > 0 ? 0 : ret;
2033			/* flush the receive buffer when it is write only mode */
2034		✗	if (!(flags & AVIO_FLAG_READ)) {
2035			char buf[1024];
2036			int read_ret;
2037		✗	s->hd->flags |= AVIO_FLAG_NONBLOCK;
2038		✗	read_ret = ffurl_read(s->hd, buf, sizeof(buf));
2039		✗	s->hd->flags &= ~AVIO_FLAG_NONBLOCK;
2040		✗	if (read_ret < 0 && read_ret != AVERROR(EAGAIN)) {
2041		✗	av_log(h, AV_LOG_ERROR, "URL read error: %s\n", av_err2str(read_ret));
2042		✗	ret = read_ret;
2043			}
2044			}
2045		✗	s->end_chunked_post = 1;
2046			}
2047
2048		✗	return ret;
2049			}
2050
2051		✗	static int http_close(URLContext *h)
2052			{
2053		✗	int ret = 0;
2054		✗	HTTPContext *s = h->priv_data;
2055
2056			#if CONFIG_ZLIB
2057		✗	inflateEnd(&s->inflate_stream);
2058		✗	av_freep(&s->inflate_buffer);
2059			#endif /* CONFIG_ZLIB */
2060
2061		✗	if (s->hd && !s->end_chunked_post)
2062			/* Close the write direction by sending the end of chunked encoding. */
2063		✗	ret = http_shutdown(h, h->flags);
2064
2065		✗	if (s->hd)
2066		✗	ffurl_closep(&s->hd);
2067		✗	av_dict_free(&s->chained_options);
2068		✗	av_dict_free(&s->cookie_dict);
2069		✗	av_dict_free(&s->redirect_cache);
2070		✗	av_freep(&s->new_location);
2071		✗	av_freep(&s->uri);
2072
2073		✗	av_log(h, AV_LOG_DEBUG, "Statistics: %d connection%s, %d request%s, %d retr%s, %d reconnection%s, %d redirect%s\n",
2074		✗	s->nb_connections, s->nb_connections == 1 ? "" : "s",
2075		✗	s->nb_requests, s->nb_requests == 1 ? "" : "s",
2076		✗	s->nb_retries, s->nb_retries == 1 ? "y" : "ies",
2077		✗	s->nb_reconnects, s->nb_reconnects == 1 ? "" : "s",
2078		✗	s->nb_redirects, s->nb_redirects == 1 ? "" : "s");
2079
2080		✗	if (s->nb_requests > 0) {
2081		✗	av_log(h, AV_LOG_DEBUG, "Latency: %.2f ms avg, %.2f ms max\n",
2082		✗	1e-3 * s->sum_latency / s->nb_requests,
2083		✗	1e-3 * s->max_latency);
2084			}
2085		✗	return ret;
2086			}
2087
2088		✗	static int64_t http_seek_internal(URLContext *h, int64_t off, int whence, int force_reconnect)
2089			{
2090		✗	HTTPContext *s = h->priv_data;
2091		✗	URLContext *old_hd = NULL;
2092		✗	uint64_t old_off = s->off;
2093			uint8_t old_buf[BUFFER_SIZE];
2094			int old_buf_size, ret;
2095		✗	AVDictionary *options = NULL;
2096			uint8_t discard[4096];
2097
2098		✗	if (whence == AVSEEK_SIZE)
2099		✗	return s->filesize;
2100		✗	else if ((s->filesize == UINT64_MAX && whence == SEEK_END))
2101		✗	return AVERROR(ENOSYS);
2102
2103		✗	if (whence == SEEK_CUR)
2104		✗	off += s->off;
2105		✗	else if (whence == SEEK_END)
2106		✗	off += s->filesize;
2107		✗	else if (whence != SEEK_SET)
2108		✗	return AVERROR(EINVAL);
2109		✗	if (off < 0)
2110		✗	return AVERROR(EINVAL);
2111		✗	if (!force_reconnect && off == s->off)
2112		✗	return s->off;
2113		✗	s->off = off;
2114
2115		✗	if (s->off && h->is_streamed)
2116		✗	return AVERROR(ENOSYS);
2117
2118			/* do not try to make a new connection if seeking past the end of the file */
2119		✗	if (s->end_off || s->filesize != UINT64_MAX) {
2120		✗	uint64_t end_pos = s->end_off ? s->end_off : s->filesize;
2121		✗	if (s->off >= end_pos)
2122		✗	return s->off;
2123			}
2124
2125			/* if the location changed (redirect), revert to the original uri */
2126		✗	if (strcmp(s->uri, s->location)) {
2127			char *new_uri;
2128		✗	new_uri = av_strdup(s->uri);
2129		✗	if (!new_uri)
2130		✗	return AVERROR(ENOMEM);
2131		✗	av_free(s->location);
2132		✗	s->location = new_uri;
2133			}
2134
2135			/* we save the old context in case the seek fails */
2136		✗	old_buf_size = s->buf_end - s->buf_ptr;
2137		✗	memcpy(old_buf, s->buf_ptr, old_buf_size);
2138
2139			/* try to reuse existing connection for small seeks */
2140		✗	uint64_t remaining = s->range_end - old_off - old_buf_size;
2141		✗	if (s->hd && !s->willclose && s->range_end && remaining <= ffurl_get_short_seek(h)) {
2142			/* drain remaining data left on the wire from previous request */
2143		✗	av_log(h, AV_LOG_DEBUG, "Soft-seeking to offset %"PRIu64" by draining "
2144			"%"PRIu64" remaining byte(s)\n", s->off, remaining);
2145		✗	while (remaining) {
2146		✗	ret = ffurl_read(s->hd, discard, FFMIN(remaining, sizeof(discard)));
2147		✗	if (ret < 0 || ret == AVERROR_EOF || (ret == 0 && remaining)) {
2148			/* connection broken or stuck, need to reopen */
2149		✗	ffurl_closep(&s->hd);
2150		✗	break;
2151			}
2152		✗	remaining -= ret;
2153			}
2154			} else {
2155			/* can't soft seek; always open new connection */
2156		✗	old_hd = s->hd;
2157		✗	s->hd = NULL;
2158			}
2159
2160			/* if it fails, continue on old connection */
2161		✗	if ((ret = http_open_cnx(h, &options)) < 0) {
2162		✗	av_dict_free(&options);
2163		✗	memcpy(s->buffer, old_buf, old_buf_size);
2164		✗	s->buf_ptr = s->buffer;
2165		✗	s->buf_end = s->buffer + old_buf_size;
2166		✗	s->hd = old_hd;
2167		✗	s->off = old_off;
2168		✗	return ret;
2169			}
2170		✗	av_dict_free(&options);
2171		✗	ffurl_close(old_hd);
2172		✗	return off;
2173			}
2174
2175		✗	static int64_t http_seek(URLContext *h, int64_t off, int whence)
2176			{
2177		✗	return http_seek_internal(h, off, whence, 0);
2178			}
2179
2180		✗	static int http_get_file_handle(URLContext *h)
2181			{
2182		✗	HTTPContext *s = h->priv_data;
2183		✗	return ffurl_get_file_handle(s->hd);
2184			}
2185
2186		✗	static int http_get_short_seek(URLContext *h)
2187			{
2188		✗	HTTPContext *s = h->priv_data;
2189		✗	if (s->short_seek_size >= 1)
2190		✗	return s->short_seek_size;
2191		✗	return ffurl_get_short_seek(s->hd);
2192			}
2193
2194			#define HTTP_CLASS(flavor) \
2195			static const AVClass flavor ## _context_class = { \
2196			.class_name = # flavor, \
2197			.item_name = av_default_item_name, \
2198			.option = http_options, \
2199			.version = LIBAVUTIL_VERSION_INT, \
2200			}
2201
2202			#if CONFIG_HTTP_PROTOCOL
2203			HTTP_CLASS(http);
2204
2205			const URLProtocol ff_http_protocol = {
2206			.name = "http",
2207			.url_open2 = http_open,
2208			.url_accept = http_accept,
2209			.url_handshake = http_handshake,
2210			.url_read = http_read,
2211			.url_write = http_write,
2212			.url_seek = http_seek,
2213			.url_close = http_close,
2214			.url_get_file_handle = http_get_file_handle,
2215			.url_get_short_seek = http_get_short_seek,
2216			.url_shutdown = http_shutdown,
2217			.priv_data_size = sizeof(HTTPContext),
2218			.priv_data_class = &http_context_class,
2219			.flags = URL_PROTOCOL_FLAG_NETWORK,
2220			.default_whitelist = "http,https,tls,rtp,tcp,udp,crypto,httpproxy,data"
2221			};
2222			#endif /* CONFIG_HTTP_PROTOCOL */
2223
2224			#if CONFIG_HTTPS_PROTOCOL
2225			HTTP_CLASS(https);
2226
2227			const URLProtocol ff_https_protocol = {
2228			.name = "https",
2229			.url_open2 = http_open,
2230			.url_read = http_read,
2231			.url_write = http_write,
2232			.url_seek = http_seek,
2233			.url_close = http_close,
2234			.url_get_file_handle = http_get_file_handle,
2235			.url_get_short_seek = http_get_short_seek,
2236			.url_shutdown = http_shutdown,
2237			.priv_data_size = sizeof(HTTPContext),
2238			.priv_data_class = &https_context_class,
2239			.flags = URL_PROTOCOL_FLAG_NETWORK,
2240			.default_whitelist = "http,https,tls,rtp,tcp,udp,crypto,httpproxy"
2241			};
2242			#endif /* CONFIG_HTTPS_PROTOCOL */
2243
2244			#if CONFIG_HTTPPROXY_PROTOCOL
2245		✗	static int http_proxy_close(URLContext *h)
2246			{
2247		✗	HTTPContext *s = h->priv_data;
2248		✗	if (s->hd)
2249		✗	ffurl_closep(&s->hd);
2250		✗	return 0;
2251			}
2252
2253		✗	static int http_proxy_open(URLContext *h, const char *uri, int flags)
2254			{
2255		✗	HTTPContext *s = h->priv_data;
2256			char hostname[1024], hoststr[1024];
2257			char auth[1024], pathbuf[1024], *path;
2258			char lower_url[100];
2259		✗	int port, ret = 0, auth_attempts = 0;
2260			HTTPAuthType cur_auth_type;
2261			char *authstr;
2262
2263		✗	if( s->seekable == 1 )
2264		✗	h->is_streamed = 0;
2265			else
2266		✗	h->is_streamed = 1;
2267
2268		✗	av_url_split(NULL, 0, auth, sizeof(auth), hostname, sizeof(hostname), &port,
2269			pathbuf, sizeof(pathbuf), uri);
2270		✗	ff_url_join(hoststr, sizeof(hoststr), NULL, NULL, hostname, port, NULL);
2271		✗	path = pathbuf;
2272		✗	if (*path == '/')
2273		✗	path++;
2274
2275		✗	ff_url_join(lower_url, sizeof(lower_url), "tcp", NULL, hostname, port,
2276			NULL);
2277		✗	redo:
2278		✗	ret = ffurl_open_whitelist(&s->hd, lower_url, AVIO_FLAG_READ_WRITE,
2279		✗	&h->interrupt_callback, NULL,
2280			h->protocol_whitelist, h->protocol_blacklist, h);
2281		✗	if (ret < 0)
2282		✗	return ret;
2283
2284		✗	authstr = ff_http_auth_create_response(&s->proxy_auth_state, auth,
2285			path, "CONNECT");
2286		✗	snprintf(s->buffer, sizeof(s->buffer),
2287			"CONNECT %s HTTP/1.1\r\n"
2288			"Host: %s\r\n"
2289			"Connection: close\r\n"
2290			"%s%s"
2291			"\r\n",
2292			path,
2293			hoststr,
2294		✗	authstr ? "Proxy-" : "", authstr ? authstr : "");
2295		✗	av_freep(&authstr);
2296
2297		✗	if ((ret = ffurl_write(s->hd, s->buffer, strlen(s->buffer))) < 0)
2298		✗	goto fail;
2299
2300		✗	s->buf_ptr = s->buffer;
2301		✗	s->buf_end = s->buffer;
2302		✗	s->line_count = 0;
2303		✗	s->filesize = UINT64_MAX;
2304		✗	cur_auth_type = s->proxy_auth_state.auth_type;
2305
2306			/* Note: This uses buffering, potentially reading more than the
2307			* HTTP header. If tunneling a protocol where the server starts
2308			* the conversation, we might buffer part of that here, too.
2309			* Reading that requires using the proper ffurl_read() function
2310			* on this URLContext, not using the fd directly (as the tls
2311			* protocol does). This shouldn't be an issue for tls though,
2312			* since the client starts the conversation there, so there
2313			* is no extra data that we might buffer up here.
2314			*/
2315		✗	ret = http_read_header(h);
2316		✗	if (ret < 0)
2317		✗	goto fail;
2318
2319		✗	auth_attempts++;
2320		✗	if (s->http_code == 407 &&
2321		✗	(cur_auth_type == HTTP_AUTH_NONE || s->proxy_auth_state.stale) &&
2322		✗	s->proxy_auth_state.auth_type != HTTP_AUTH_NONE && auth_attempts < 2) {
2323		✗	ffurl_closep(&s->hd);
2324		✗	goto redo;
2325			}
2326
2327		✗	if (s->http_code < 400)
2328		✗	return 0;
2329		✗	ret = ff_http_averror(s->http_code, AVERROR(EIO));
2330
2331		✗	fail:
2332		✗	http_proxy_close(h);
2333		✗	return ret;
2334			}
2335
2336		✗	static int http_proxy_write(URLContext *h, const uint8_t *buf, int size)
2337			{
2338		✗	HTTPContext *s = h->priv_data;
2339		✗	return ffurl_write(s->hd, buf, size);
2340			}
2341
2342			const URLProtocol ff_httpproxy_protocol = {
2343			.name = "httpproxy",
2344			.url_open = http_proxy_open,
2345			.url_read = http_buf_read,
2346			.url_write = http_proxy_write,
2347			.url_close = http_proxy_close,
2348			.url_get_file_handle = http_get_file_handle,
2349			.priv_data_size = sizeof(HTTPContext),
2350			.flags = URL_PROTOCOL_FLAG_NETWORK,
2351			};
2352			#endif /* CONFIG_HTTPPROXY_PROTOCOL */
2353