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