mirror of
https://git.videolan.org/git/ffmpeg.git
synced 2024-08-20 16:25:04 +02:00
1421 lines
46 KiB
C
1421 lines
46 KiB
C
/*
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* HTTP protocol for ffmpeg client
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* Copyright (c) 2000, 2001 Fabrice Bellard
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*
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* This file is part of FFmpeg.
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*
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* FFmpeg is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* FFmpeg is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with FFmpeg; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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#include "config.h"
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#if CONFIG_ZLIB
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#include <zlib.h>
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#endif /* CONFIG_ZLIB */
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#include "libavutil/avstring.h"
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#include "libavutil/opt.h"
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#include "avformat.h"
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#include "http.h"
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#include "httpauth.h"
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#include "internal.h"
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#include "network.h"
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#include "os_support.h"
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#include "url.h"
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/* XXX: POST protocol is not completely implemented because ffmpeg uses
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* only a subset of it. */
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/* The IO buffer size is unrelated to the max URL size in itself, but needs
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* to be large enough to fit the full request headers (including long
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* path names). */
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#define BUFFER_SIZE MAX_URL_SIZE
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#define MAX_REDIRECTS 8
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typedef struct HTTPContext {
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const AVClass *class;
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URLContext *hd;
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unsigned char buffer[BUFFER_SIZE], *buf_ptr, *buf_end;
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int line_count;
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int http_code;
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/* Used if "Transfer-Encoding: chunked" otherwise -1. */
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int64_t chunksize;
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int64_t off, end_off, filesize;
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char *location;
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HTTPAuthState auth_state;
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HTTPAuthState proxy_auth_state;
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char *headers;
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char *mime_type;
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char *user_agent;
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char *content_type;
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/* Set if the server correctly handles Connection: close and will close
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* the connection after feeding us the content. */
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int willclose;
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int seekable; /**< Control seekability, 0 = disable, 1 = enable, -1 = probe. */
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int chunked_post;
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/* A flag which indicates if the end of chunked encoding has been sent. */
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int end_chunked_post;
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/* A flag which indicates we have finished to read POST reply. */
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int end_header;
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/* A flag which indicates if we use persistent connections. */
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int multiple_requests;
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uint8_t *post_data;
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int post_datalen;
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int is_akamai;
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int is_mediagateway;
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char *cookies; ///< holds newline (\n) delimited Set-Cookie header field values (without the "Set-Cookie: " field name)
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/* A dictionary containing cookies keyed by cookie name */
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AVDictionary *cookie_dict;
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int icy;
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/* how much data was read since the last ICY metadata packet */
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int icy_data_read;
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/* after how many bytes of read data a new metadata packet will be found */
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int icy_metaint;
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char *icy_metadata_headers;
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char *icy_metadata_packet;
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AVDictionary *metadata;
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#if CONFIG_ZLIB
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int compressed;
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z_stream inflate_stream;
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uint8_t *inflate_buffer;
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#endif /* CONFIG_ZLIB */
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AVDictionary *chained_options;
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int send_expect_100;
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char *method;
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int reconnect;
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int listen;
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} HTTPContext;
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#define OFFSET(x) offsetof(HTTPContext, x)
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#define D AV_OPT_FLAG_DECODING_PARAM
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#define E AV_OPT_FLAG_ENCODING_PARAM
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#define DEFAULT_USER_AGENT "Lavf/" AV_STRINGIFY(LIBAVFORMAT_VERSION)
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static const AVOption options[] = {
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{ "seekable", "control seekability of connection", OFFSET(seekable), AV_OPT_TYPE_INT, { .i64 = -1 }, -1, 1, D },
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{ "chunked_post", "use chunked transfer-encoding for posts", OFFSET(chunked_post), AV_OPT_TYPE_INT, { .i64 = 1 }, 0, 1, E },
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{ "headers", "set custom HTTP headers, can override built in default headers", OFFSET(headers), AV_OPT_TYPE_STRING, { 0 }, 0, 0, D | E },
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{ "content_type", "set a specific content type for the POST messages", OFFSET(content_type), AV_OPT_TYPE_STRING, { 0 }, 0, 0, D | E },
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{ "user_agent", "override User-Agent header", OFFSET(user_agent), AV_OPT_TYPE_STRING, { .str = DEFAULT_USER_AGENT }, 0, 0, D },
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{ "user-agent", "override User-Agent header", OFFSET(user_agent), AV_OPT_TYPE_STRING, { .str = DEFAULT_USER_AGENT }, 0, 0, D },
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{ "multiple_requests", "use persistent connections", OFFSET(multiple_requests), AV_OPT_TYPE_INT, { .i64 = 0 }, 0, 1, D | E },
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{ "post_data", "set custom HTTP post data", OFFSET(post_data), AV_OPT_TYPE_BINARY, .flags = D | E },
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{ "mime_type", "export the MIME type", OFFSET(mime_type), AV_OPT_TYPE_STRING, { 0 }, 0, 0, AV_OPT_FLAG_EXPORT | AV_OPT_FLAG_READONLY },
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{ "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, { 0 }, 0, 0, D },
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{ "icy", "request ICY metadata", OFFSET(icy), AV_OPT_TYPE_INT, { .i64 = 1 }, 0, 1, D },
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{ "icy_metadata_headers", "return ICY metadata headers", OFFSET(icy_metadata_headers), AV_OPT_TYPE_STRING, { 0 }, 0, 0, AV_OPT_FLAG_EXPORT },
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{ "icy_metadata_packet", "return current ICY metadata packet", OFFSET(icy_metadata_packet), AV_OPT_TYPE_STRING, { 0 }, 0, 0, AV_OPT_FLAG_EXPORT },
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{ "metadata", "metadata read from the bitstream", OFFSET(metadata), AV_OPT_TYPE_DICT, {0}, 0, 0, AV_OPT_FLAG_EXPORT },
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{ "auth_type", "HTTP authentication type", OFFSET(auth_state.auth_type), AV_OPT_TYPE_INT, { .i64 = HTTP_AUTH_NONE }, HTTP_AUTH_NONE, HTTP_AUTH_BASIC, D | E, "auth_type"},
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{ "none", "No auth method set, autodetect", 0, AV_OPT_TYPE_CONST, { .i64 = HTTP_AUTH_NONE }, 0, 0, D | E, "auth_type"},
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{ "basic", "HTTP basic authentication", 0, AV_OPT_TYPE_CONST, { .i64 = HTTP_AUTH_BASIC }, 0, 0, D | E, "auth_type"},
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{ "send_expect_100", "Force sending an Expect: 100-continue header for POST", OFFSET(send_expect_100), AV_OPT_TYPE_INT, { .i64 = 0 }, 0, 1, E },
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{ "location", "The actual location of the data received", OFFSET(location), AV_OPT_TYPE_STRING, { 0 }, 0, 0, D | E },
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{ "offset", "initial byte offset", OFFSET(off), AV_OPT_TYPE_INT64, { .i64 = 0 }, 0, INT64_MAX, D },
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{ "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 },
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{ "method", "Override the HTTP method", OFFSET(method), AV_OPT_TYPE_STRING, { .str = NULL }, 0, 0, E },
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{ "reconnect", "auto reconnect after disconnect before EOF", OFFSET(reconnect), AV_OPT_TYPE_INT, { .i64 = 0 }, 0, 1, D },
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{ "listen", "listen on HTTP", OFFSET(listen), AV_OPT_TYPE_INT, { .i64 = 0 }, 0, 1, D | E },
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{ NULL }
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};
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static int http_connect(URLContext *h, const char *path, const char *local_path,
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const char *hoststr, const char *auth,
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const char *proxyauth, int *new_location);
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static int http_read_header(URLContext *h, int *new_location);
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void ff_http_init_auth_state(URLContext *dest, const URLContext *src)
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{
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memcpy(&((HTTPContext *)dest->priv_data)->auth_state,
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&((HTTPContext *)src->priv_data)->auth_state,
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sizeof(HTTPAuthState));
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memcpy(&((HTTPContext *)dest->priv_data)->proxy_auth_state,
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&((HTTPContext *)src->priv_data)->proxy_auth_state,
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sizeof(HTTPAuthState));
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}
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static int http_open_cnx_internal(URLContext *h, AVDictionary **options)
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{
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const char *path, *proxy_path, *lower_proto = "tcp", *local_path;
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char hostname[1024], hoststr[1024], proto[10];
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char auth[1024], proxyauth[1024] = "";
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char path1[MAX_URL_SIZE];
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char buf[1024], urlbuf[MAX_URL_SIZE];
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int port, use_proxy, err, location_changed = 0;
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HTTPContext *s = h->priv_data;
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av_url_split(proto, sizeof(proto), auth, sizeof(auth),
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hostname, sizeof(hostname), &port,
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path1, sizeof(path1), s->location);
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ff_url_join(hoststr, sizeof(hoststr), NULL, NULL, hostname, port, NULL);
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proxy_path = getenv("http_proxy");
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use_proxy = !ff_http_match_no_proxy(getenv("no_proxy"), hostname) &&
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proxy_path && av_strstart(proxy_path, "http://", NULL);
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if (!strcmp(proto, "https")) {
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lower_proto = "tls";
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use_proxy = 0;
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if (port < 0)
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port = 443;
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}
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if (port < 0)
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port = 80;
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if (path1[0] == '\0')
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path = "/";
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else
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path = path1;
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local_path = path;
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if (use_proxy) {
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/* Reassemble the request URL without auth string - we don't
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* want to leak the auth to the proxy. */
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ff_url_join(urlbuf, sizeof(urlbuf), proto, NULL, hostname, port, "%s",
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path1);
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path = urlbuf;
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av_url_split(NULL, 0, proxyauth, sizeof(proxyauth),
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hostname, sizeof(hostname), &port, NULL, 0, proxy_path);
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}
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ff_url_join(buf, sizeof(buf), lower_proto, NULL, hostname, port, NULL);
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if (!s->hd) {
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err = ffurl_open(&s->hd, buf, AVIO_FLAG_READ_WRITE,
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&h->interrupt_callback, options);
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if (err < 0)
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return err;
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}
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err = http_connect(h, path, local_path, hoststr,
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auth, proxyauth, &location_changed);
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if (err < 0)
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return err;
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return location_changed;
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}
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/* return non zero if error */
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static int http_open_cnx(URLContext *h, AVDictionary **options)
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{
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HTTPAuthType cur_auth_type, cur_proxy_auth_type;
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HTTPContext *s = h->priv_data;
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int location_changed, attempts = 0, redirects = 0;
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redo:
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av_dict_copy(options, s->chained_options, 0);
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cur_auth_type = s->auth_state.auth_type;
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cur_proxy_auth_type = s->auth_state.auth_type;
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location_changed = http_open_cnx_internal(h, options);
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if (location_changed < 0)
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goto fail;
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attempts++;
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if (s->http_code == 401) {
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if ((cur_auth_type == HTTP_AUTH_NONE || s->auth_state.stale) &&
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s->auth_state.auth_type != HTTP_AUTH_NONE && attempts < 4) {
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ffurl_closep(&s->hd);
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goto redo;
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} else
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goto fail;
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}
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if (s->http_code == 407) {
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if ((cur_proxy_auth_type == HTTP_AUTH_NONE || s->proxy_auth_state.stale) &&
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s->proxy_auth_state.auth_type != HTTP_AUTH_NONE && attempts < 4) {
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ffurl_closep(&s->hd);
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goto redo;
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} else
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goto fail;
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}
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if ((s->http_code == 301 || s->http_code == 302 ||
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s->http_code == 303 || s->http_code == 307) &&
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location_changed == 1) {
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/* url moved, get next */
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ffurl_closep(&s->hd);
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if (redirects++ >= MAX_REDIRECTS)
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return AVERROR(EIO);
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/* Restart the authentication process with the new target, which
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* might use a different auth mechanism. */
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memset(&s->auth_state, 0, sizeof(s->auth_state));
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attempts = 0;
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location_changed = 0;
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goto redo;
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}
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return 0;
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fail:
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if (s->hd)
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ffurl_closep(&s->hd);
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if (location_changed < 0)
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return location_changed;
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return ff_http_averror(s->http_code, AVERROR(EIO));
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}
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int ff_http_do_new_request(URLContext *h, const char *uri)
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{
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HTTPContext *s = h->priv_data;
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AVDictionary *options = NULL;
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int ret;
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s->off = 0;
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s->icy_data_read = 0;
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av_free(s->location);
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s->location = av_strdup(uri);
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if (!s->location)
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return AVERROR(ENOMEM);
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ret = http_open_cnx(h, &options);
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av_dict_free(&options);
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return ret;
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}
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int ff_http_averror(int status_code, int default_averror)
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{
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switch (status_code) {
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case 400: return AVERROR_HTTP_BAD_REQUEST;
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case 401: return AVERROR_HTTP_UNAUTHORIZED;
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case 403: return AVERROR_HTTP_FORBIDDEN;
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case 404: return AVERROR_HTTP_NOT_FOUND;
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default: break;
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}
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if (status_code >= 400 && status_code <= 499)
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return AVERROR_HTTP_OTHER_4XX;
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else if (status_code >= 500)
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return AVERROR_HTTP_SERVER_ERROR;
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else
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return default_averror;
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}
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static int http_listen(URLContext *h, const char *uri, int flags,
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AVDictionary **options) {
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HTTPContext *s = h->priv_data;
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int ret;
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static const char header[] = "HTTP/1.1 200 OK\r\nContent-Type: application/octet-stream\r\nTransfer-Encoding: chunked\r\n\r\n";
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char hostname[1024], proto[10];
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char lower_url[100];
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const char *lower_proto = "tcp";
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int port, new_location;
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av_url_split(proto, sizeof(proto), NULL, 0, hostname, sizeof(hostname), &port,
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NULL, 0, uri);
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if (!strcmp(proto, "https"))
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lower_proto = "tls";
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ff_url_join(lower_url, sizeof(lower_url), lower_proto, NULL, hostname, port,
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NULL);
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av_dict_set(options, "listen", "1", 0);
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if ((ret = ffurl_open(&s->hd, lower_url, AVIO_FLAG_READ_WRITE,
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&h->interrupt_callback, options)) < 0)
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goto fail;
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if ((ret = ffurl_write(s->hd, header, strlen(header))) < 0)
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goto fail;
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if ((ret = http_read_header(h, &new_location)) < 0)
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goto fail;
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return 0;
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fail:
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av_dict_free(&s->chained_options);
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return ret;
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}
|
|
|
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static int http_open(URLContext *h, const char *uri, int flags,
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AVDictionary **options)
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{
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HTTPContext *s = h->priv_data;
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int ret;
|
|
|
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if( s->seekable == 1 )
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h->is_streamed = 0;
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else
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h->is_streamed = 1;
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|
|
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s->filesize = -1;
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s->location = av_strdup(uri);
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if (!s->location)
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return AVERROR(ENOMEM);
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if (options)
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av_dict_copy(&s->chained_options, *options, 0);
|
|
|
|
if (s->headers) {
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int len = strlen(s->headers);
|
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if (len < 2 || strcmp("\r\n", s->headers + len - 2))
|
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av_log(h, AV_LOG_WARNING,
|
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"No trailing CRLF found in HTTP header.\n");
|
|
}
|
|
|
|
if (s->listen) {
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return http_listen(h, uri, flags, options);
|
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}
|
|
ret = http_open_cnx(h, options);
|
|
if (ret < 0)
|
|
av_dict_free(&s->chained_options);
|
|
return ret;
|
|
}
|
|
|
|
static int http_getc(HTTPContext *s)
|
|
{
|
|
int len;
|
|
if (s->buf_ptr >= s->buf_end) {
|
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len = ffurl_read(s->hd, s->buffer, BUFFER_SIZE);
|
|
if (len < 0) {
|
|
return len;
|
|
} else if (len == 0) {
|
|
return AVERROR_EOF;
|
|
} else {
|
|
s->buf_ptr = s->buffer;
|
|
s->buf_end = s->buffer + len;
|
|
}
|
|
}
|
|
return *s->buf_ptr++;
|
|
}
|
|
|
|
static int http_get_line(HTTPContext *s, char *line, int line_size)
|
|
{
|
|
int ch;
|
|
char *q;
|
|
|
|
q = line;
|
|
for (;;) {
|
|
ch = http_getc(s);
|
|
if (ch < 0)
|
|
return ch;
|
|
if (ch == '\n') {
|
|
/* process line */
|
|
if (q > line && q[-1] == '\r')
|
|
q--;
|
|
*q = '\0';
|
|
|
|
return 0;
|
|
} else {
|
|
if ((q - line) < line_size - 1)
|
|
*q++ = ch;
|
|
}
|
|
}
|
|
}
|
|
|
|
static int check_http_code(URLContext *h, int http_code, const char *end)
|
|
{
|
|
HTTPContext *s = h->priv_data;
|
|
/* error codes are 4xx and 5xx, but regard 401 as a success, so we
|
|
* don't abort until all headers have been parsed. */
|
|
if (http_code >= 400 && http_code < 600 &&
|
|
(http_code != 401 || s->auth_state.auth_type != HTTP_AUTH_NONE) &&
|
|
(http_code != 407 || s->proxy_auth_state.auth_type != HTTP_AUTH_NONE)) {
|
|
end += strspn(end, SPACE_CHARS);
|
|
av_log(h, AV_LOG_WARNING, "HTTP error %d %s\n", http_code, end);
|
|
return ff_http_averror(http_code, AVERROR(EIO));
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
static int parse_location(HTTPContext *s, const char *p)
|
|
{
|
|
char redirected_location[MAX_URL_SIZE], *new_loc;
|
|
ff_make_absolute_url(redirected_location, sizeof(redirected_location),
|
|
s->location, p);
|
|
new_loc = av_strdup(redirected_location);
|
|
if (!new_loc)
|
|
return AVERROR(ENOMEM);
|
|
av_free(s->location);
|
|
s->location = new_loc;
|
|
return 0;
|
|
}
|
|
|
|
/* "bytes $from-$to/$document_size" */
|
|
static void parse_content_range(URLContext *h, const char *p)
|
|
{
|
|
HTTPContext *s = h->priv_data;
|
|
const char *slash;
|
|
|
|
if (!strncmp(p, "bytes ", 6)) {
|
|
p += 6;
|
|
s->off = strtoll(p, NULL, 10);
|
|
if ((slash = strchr(p, '/')) && strlen(slash) > 0)
|
|
s->filesize = strtoll(slash + 1, NULL, 10);
|
|
}
|
|
if (s->seekable == -1 && (!s->is_akamai || s->filesize != 2147483647))
|
|
h->is_streamed = 0; /* we _can_ in fact seek */
|
|
}
|
|
|
|
static int parse_content_encoding(URLContext *h, const char *p)
|
|
{
|
|
if (!av_strncasecmp(p, "gzip", 4) ||
|
|
!av_strncasecmp(p, "deflate", 7)) {
|
|
#if CONFIG_ZLIB
|
|
HTTPContext *s = h->priv_data;
|
|
|
|
s->compressed = 1;
|
|
inflateEnd(&s->inflate_stream);
|
|
if (inflateInit2(&s->inflate_stream, 32 + 15) != Z_OK) {
|
|
av_log(h, AV_LOG_WARNING, "Error during zlib initialisation: %s\n",
|
|
s->inflate_stream.msg);
|
|
return AVERROR(ENOSYS);
|
|
}
|
|
if (zlibCompileFlags() & (1 << 17)) {
|
|
av_log(h, AV_LOG_WARNING,
|
|
"Your zlib was compiled without gzip support.\n");
|
|
return AVERROR(ENOSYS);
|
|
}
|
|
#else
|
|
av_log(h, AV_LOG_WARNING,
|
|
"Compressed (%s) content, need zlib with gzip support\n", p);
|
|
return AVERROR(ENOSYS);
|
|
#endif /* CONFIG_ZLIB */
|
|
} else if (!av_strncasecmp(p, "identity", 8)) {
|
|
// The normal, no-encoding case (although servers shouldn't include
|
|
// the header at all if this is the case).
|
|
} else {
|
|
av_log(h, AV_LOG_WARNING, "Unknown content coding: %s\n", p);
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
// Concat all Icy- header lines
|
|
static int parse_icy(HTTPContext *s, const char *tag, const char *p)
|
|
{
|
|
int len = 4 + strlen(p) + strlen(tag);
|
|
int is_first = !s->icy_metadata_headers;
|
|
int ret;
|
|
|
|
av_dict_set(&s->metadata, tag, p, 0);
|
|
|
|
if (s->icy_metadata_headers)
|
|
len += strlen(s->icy_metadata_headers);
|
|
|
|
if ((ret = av_reallocp(&s->icy_metadata_headers, len)) < 0)
|
|
return ret;
|
|
|
|
if (is_first)
|
|
*s->icy_metadata_headers = '\0';
|
|
|
|
av_strlcatf(s->icy_metadata_headers, len, "%s: %s\n", tag, p);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int parse_cookie(HTTPContext *s, const char *p, AVDictionary **cookies)
|
|
{
|
|
char *eql, *name;
|
|
|
|
// duplicate the cookie name (dict will dupe the value)
|
|
if (!(eql = strchr(p, '='))) return AVERROR(EINVAL);
|
|
if (!(name = av_strndup(p, eql - p))) return AVERROR(ENOMEM);
|
|
|
|
// add the cookie to the dictionary
|
|
av_dict_set(cookies, name, eql, AV_DICT_DONT_STRDUP_KEY);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int cookie_string(AVDictionary *dict, char **cookies)
|
|
{
|
|
AVDictionaryEntry *e = NULL;
|
|
int len = 1;
|
|
|
|
// determine how much memory is needed for the cookies string
|
|
while (e = av_dict_get(dict, "", e, AV_DICT_IGNORE_SUFFIX))
|
|
len += strlen(e->key) + strlen(e->value) + 1;
|
|
|
|
// reallocate the cookies
|
|
e = NULL;
|
|
if (*cookies) av_free(*cookies);
|
|
*cookies = av_malloc(len);
|
|
if (!*cookies) return AVERROR(ENOMEM);
|
|
*cookies[0] = '\0';
|
|
|
|
// write out the cookies
|
|
while (e = av_dict_get(dict, "", e, AV_DICT_IGNORE_SUFFIX))
|
|
av_strlcatf(*cookies, len, "%s%s\n", e->key, e->value);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int process_line(URLContext *h, char *line, int line_count,
|
|
int *new_location)
|
|
{
|
|
HTTPContext *s = h->priv_data;
|
|
char *tag, *p, *end;
|
|
int ret;
|
|
|
|
/* end of header */
|
|
if (line[0] == '\0') {
|
|
s->end_header = 1;
|
|
return 0;
|
|
}
|
|
|
|
p = line;
|
|
if (line_count == 0) {
|
|
while (!av_isspace(*p) && *p != '\0')
|
|
p++;
|
|
while (av_isspace(*p))
|
|
p++;
|
|
s->http_code = strtol(p, &end, 10);
|
|
|
|
av_log(h, AV_LOG_TRACE, "http_code=%d\n", s->http_code);
|
|
|
|
if ((ret = check_http_code(h, s->http_code, end)) < 0)
|
|
return ret;
|
|
} else {
|
|
while (*p != '\0' && *p != ':')
|
|
p++;
|
|
if (*p != ':')
|
|
return 1;
|
|
|
|
*p = '\0';
|
|
tag = line;
|
|
p++;
|
|
while (av_isspace(*p))
|
|
p++;
|
|
if (!av_strcasecmp(tag, "Location")) {
|
|
if ((ret = parse_location(s, p)) < 0)
|
|
return ret;
|
|
*new_location = 1;
|
|
} else if (!av_strcasecmp(tag, "Content-Length") && s->filesize == -1) {
|
|
s->filesize = strtoll(p, NULL, 10);
|
|
} else if (!av_strcasecmp(tag, "Content-Range")) {
|
|
parse_content_range(h, p);
|
|
} else if (!av_strcasecmp(tag, "Accept-Ranges") &&
|
|
!strncmp(p, "bytes", 5) &&
|
|
s->seekable == -1) {
|
|
h->is_streamed = 0;
|
|
} else if (!av_strcasecmp(tag, "Transfer-Encoding") &&
|
|
!av_strncasecmp(p, "chunked", 7)) {
|
|
s->filesize = -1;
|
|
s->chunksize = 0;
|
|
} else if (!av_strcasecmp(tag, "WWW-Authenticate")) {
|
|
ff_http_auth_handle_header(&s->auth_state, tag, p);
|
|
} else if (!av_strcasecmp(tag, "Authentication-Info")) {
|
|
ff_http_auth_handle_header(&s->auth_state, tag, p);
|
|
} else if (!av_strcasecmp(tag, "Proxy-Authenticate")) {
|
|
ff_http_auth_handle_header(&s->proxy_auth_state, tag, p);
|
|
} else if (!av_strcasecmp(tag, "Connection")) {
|
|
if (!strcmp(p, "close"))
|
|
s->willclose = 1;
|
|
} else if (!av_strcasecmp(tag, "Server")) {
|
|
if (!av_strcasecmp(p, "AkamaiGHost")) {
|
|
s->is_akamai = 1;
|
|
} else if (!av_strncasecmp(p, "MediaGateway", 12)) {
|
|
s->is_mediagateway = 1;
|
|
}
|
|
} else if (!av_strcasecmp(tag, "Content-Type")) {
|
|
av_free(s->mime_type);
|
|
s->mime_type = av_strdup(p);
|
|
} else if (!av_strcasecmp(tag, "Set-Cookie")) {
|
|
if (parse_cookie(s, p, &s->cookie_dict))
|
|
av_log(h, AV_LOG_WARNING, "Unable to parse '%s'\n", p);
|
|
} else if (!av_strcasecmp(tag, "Icy-MetaInt")) {
|
|
s->icy_metaint = strtoll(p, NULL, 10);
|
|
} else if (!av_strncasecmp(tag, "Icy-", 4)) {
|
|
if ((ret = parse_icy(s, tag, p)) < 0)
|
|
return ret;
|
|
} else if (!av_strcasecmp(tag, "Content-Encoding")) {
|
|
if ((ret = parse_content_encoding(h, p)) < 0)
|
|
return ret;
|
|
}
|
|
}
|
|
return 1;
|
|
}
|
|
|
|
/**
|
|
* Create a string containing cookie values for use as a HTTP cookie header
|
|
* field value for a particular path and domain from the cookie values stored in
|
|
* the HTTP protocol context. The cookie string is stored in *cookies.
|
|
*
|
|
* @return a negative value if an error condition occurred, 0 otherwise
|
|
*/
|
|
static int get_cookies(HTTPContext *s, char **cookies, const char *path,
|
|
const char *domain)
|
|
{
|
|
// cookie strings will look like Set-Cookie header field values. Multiple
|
|
// Set-Cookie fields will result in multiple values delimited by a newline
|
|
int ret = 0;
|
|
char *next, *cookie, *set_cookies = av_strdup(s->cookies), *cset_cookies = set_cookies;
|
|
|
|
if (!set_cookies) return AVERROR(EINVAL);
|
|
|
|
// destroy any cookies in the dictionary.
|
|
av_dict_free(&s->cookie_dict);
|
|
|
|
*cookies = NULL;
|
|
while ((cookie = av_strtok(set_cookies, "\n", &next))) {
|
|
int domain_offset = 0;
|
|
char *param, *next_param, *cdomain = NULL, *cpath = NULL, *cvalue = NULL;
|
|
set_cookies = NULL;
|
|
|
|
// store the cookie in a dict in case it is updated in the response
|
|
if (parse_cookie(s, cookie, &s->cookie_dict))
|
|
av_log(s, AV_LOG_WARNING, "Unable to parse '%s'\n", cookie);
|
|
|
|
while ((param = av_strtok(cookie, "; ", &next_param))) {
|
|
if (cookie) {
|
|
// first key-value pair is the actual cookie value
|
|
cvalue = av_strdup(param);
|
|
cookie = NULL;
|
|
} else if (!av_strncasecmp("path=", param, 5)) {
|
|
av_free(cpath);
|
|
cpath = av_strdup(¶m[5]);
|
|
} else if (!av_strncasecmp("domain=", param, 7)) {
|
|
// if the cookie specifies a sub-domain, skip the leading dot thereby
|
|
// supporting URLs that point to sub-domains and the master domain
|
|
int leading_dot = (param[7] == '.');
|
|
av_free(cdomain);
|
|
cdomain = av_strdup(¶m[7+leading_dot]);
|
|
} else {
|
|
// ignore unknown attributes
|
|
}
|
|
}
|
|
if (!cdomain)
|
|
cdomain = av_strdup(domain);
|
|
|
|
// ensure all of the necessary values are valid
|
|
if (!cdomain || !cpath || !cvalue) {
|
|
av_log(s, AV_LOG_WARNING,
|
|
"Invalid cookie found, no value, path or domain specified\n");
|
|
goto done_cookie;
|
|
}
|
|
|
|
// check if the request path matches the cookie path
|
|
if (av_strncasecmp(path, cpath, strlen(cpath)))
|
|
goto done_cookie;
|
|
|
|
// the domain should be at least the size of our cookie domain
|
|
domain_offset = strlen(domain) - strlen(cdomain);
|
|
if (domain_offset < 0)
|
|
goto done_cookie;
|
|
|
|
// match the cookie domain
|
|
if (av_strcasecmp(&domain[domain_offset], cdomain))
|
|
goto done_cookie;
|
|
|
|
// cookie parameters match, so copy the value
|
|
if (!*cookies) {
|
|
if (!(*cookies = av_strdup(cvalue))) {
|
|
ret = AVERROR(ENOMEM);
|
|
goto done_cookie;
|
|
}
|
|
} else {
|
|
char *tmp = *cookies;
|
|
size_t str_size = strlen(cvalue) + strlen(*cookies) + 3;
|
|
if (!(*cookies = av_malloc(str_size))) {
|
|
ret = AVERROR(ENOMEM);
|
|
goto done_cookie;
|
|
}
|
|
snprintf(*cookies, str_size, "%s; %s", tmp, cvalue);
|
|
av_free(tmp);
|
|
}
|
|
|
|
done_cookie:
|
|
av_freep(&cdomain);
|
|
av_freep(&cpath);
|
|
av_freep(&cvalue);
|
|
if (ret < 0) {
|
|
if (*cookies) av_freep(cookies);
|
|
av_free(cset_cookies);
|
|
return ret;
|
|
}
|
|
}
|
|
|
|
av_free(cset_cookies);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static inline int has_header(const char *str, const char *header)
|
|
{
|
|
/* header + 2 to skip over CRLF prefix. (make sure you have one!) */
|
|
if (!str)
|
|
return 0;
|
|
return av_stristart(str, header + 2, NULL) || av_stristr(str, header);
|
|
}
|
|
|
|
static int http_read_header(URLContext *h, int *new_location)
|
|
{
|
|
HTTPContext *s = h->priv_data;
|
|
char line[MAX_URL_SIZE];
|
|
int err = 0;
|
|
|
|
s->chunksize = -1;
|
|
|
|
for (;;) {
|
|
if ((err = http_get_line(s, line, sizeof(line))) < 0)
|
|
return err;
|
|
|
|
av_log(h, AV_LOG_TRACE, "header='%s'\n", line);
|
|
|
|
err = process_line(h, line, s->line_count, new_location);
|
|
if (err < 0)
|
|
return err;
|
|
if (err == 0)
|
|
break;
|
|
s->line_count++;
|
|
}
|
|
|
|
if (s->seekable == -1 && s->is_mediagateway && s->filesize == 2000000000)
|
|
h->is_streamed = 1; /* we can in fact _not_ seek */
|
|
|
|
// add any new cookies into the existing cookie string
|
|
cookie_string(s->cookie_dict, &s->cookies);
|
|
av_dict_free(&s->cookie_dict);
|
|
|
|
return err;
|
|
}
|
|
|
|
static int http_connect(URLContext *h, const char *path, const char *local_path,
|
|
const char *hoststr, const char *auth,
|
|
const char *proxyauth, int *new_location)
|
|
{
|
|
HTTPContext *s = h->priv_data;
|
|
int post, err;
|
|
char headers[HTTP_HEADERS_SIZE] = "";
|
|
char *authstr = NULL, *proxyauthstr = NULL;
|
|
int64_t off = s->off;
|
|
int len = 0;
|
|
const char *method;
|
|
int send_expect_100 = 0;
|
|
|
|
/* send http header */
|
|
post = h->flags & AVIO_FLAG_WRITE;
|
|
|
|
if (s->post_data) {
|
|
/* force POST method and disable chunked encoding when
|
|
* custom HTTP post data is set */
|
|
post = 1;
|
|
s->chunked_post = 0;
|
|
}
|
|
|
|
if (s->method)
|
|
method = s->method;
|
|
else
|
|
method = post ? "POST" : "GET";
|
|
|
|
authstr = ff_http_auth_create_response(&s->auth_state, auth,
|
|
local_path, method);
|
|
proxyauthstr = ff_http_auth_create_response(&s->proxy_auth_state, proxyauth,
|
|
local_path, method);
|
|
if (post && !s->post_data) {
|
|
send_expect_100 = s->send_expect_100;
|
|
/* The user has supplied authentication but we don't know the auth type,
|
|
* send Expect: 100-continue to get the 401 response including the
|
|
* WWW-Authenticate header, or an 100 continue if no auth actually
|
|
* is needed. */
|
|
if (auth && *auth &&
|
|
s->auth_state.auth_type == HTTP_AUTH_NONE &&
|
|
s->http_code != 401)
|
|
send_expect_100 = 1;
|
|
}
|
|
|
|
/* set default headers if needed */
|
|
if (!has_header(s->headers, "\r\nUser-Agent: "))
|
|
len += av_strlcatf(headers + len, sizeof(headers) - len,
|
|
"User-Agent: %s\r\n", s->user_agent);
|
|
if (!has_header(s->headers, "\r\nAccept: "))
|
|
len += av_strlcpy(headers + len, "Accept: */*\r\n",
|
|
sizeof(headers) - len);
|
|
// Note: we send this on purpose even when s->off is 0 when we're probing,
|
|
// since it allows us to detect more reliably if a (non-conforming)
|
|
// server supports seeking by analysing the reply headers.
|
|
if (!has_header(s->headers, "\r\nRange: ") && !post && (s->off > 0 || s->end_off || s->seekable == -1)) {
|
|
len += av_strlcatf(headers + len, sizeof(headers) - len,
|
|
"Range: bytes=%"PRId64"-", s->off);
|
|
if (s->end_off)
|
|
len += av_strlcatf(headers + len, sizeof(headers) - len,
|
|
"%"PRId64, s->end_off - 1);
|
|
len += av_strlcpy(headers + len, "\r\n",
|
|
sizeof(headers) - len);
|
|
}
|
|
if (send_expect_100 && !has_header(s->headers, "\r\nExpect: "))
|
|
len += av_strlcatf(headers + len, sizeof(headers) - len,
|
|
"Expect: 100-continue\r\n");
|
|
|
|
if (!has_header(s->headers, "\r\nConnection: ")) {
|
|
if (s->multiple_requests)
|
|
len += av_strlcpy(headers + len, "Connection: keep-alive\r\n",
|
|
sizeof(headers) - len);
|
|
else
|
|
len += av_strlcpy(headers + len, "Connection: close\r\n",
|
|
sizeof(headers) - len);
|
|
}
|
|
|
|
if (!has_header(s->headers, "\r\nHost: "))
|
|
len += av_strlcatf(headers + len, sizeof(headers) - len,
|
|
"Host: %s\r\n", hoststr);
|
|
if (!has_header(s->headers, "\r\nContent-Length: ") && s->post_data)
|
|
len += av_strlcatf(headers + len, sizeof(headers) - len,
|
|
"Content-Length: %d\r\n", s->post_datalen);
|
|
|
|
if (!has_header(s->headers, "\r\nContent-Type: ") && s->content_type)
|
|
len += av_strlcatf(headers + len, sizeof(headers) - len,
|
|
"Content-Type: %s\r\n", s->content_type);
|
|
if (!has_header(s->headers, "\r\nCookie: ") && s->cookies) {
|
|
char *cookies = NULL;
|
|
if (!get_cookies(s, &cookies, path, hoststr) && cookies) {
|
|
len += av_strlcatf(headers + len, sizeof(headers) - len,
|
|
"Cookie: %s\r\n", cookies);
|
|
av_free(cookies);
|
|
}
|
|
}
|
|
if (!has_header(s->headers, "\r\nIcy-MetaData: ") && s->icy)
|
|
len += av_strlcatf(headers + len, sizeof(headers) - len,
|
|
"Icy-MetaData: %d\r\n", 1);
|
|
|
|
/* now add in custom headers */
|
|
if (s->headers)
|
|
av_strlcpy(headers + len, s->headers, sizeof(headers) - len);
|
|
|
|
snprintf(s->buffer, sizeof(s->buffer),
|
|
"%s %s HTTP/1.1\r\n"
|
|
"%s"
|
|
"%s"
|
|
"%s"
|
|
"%s%s"
|
|
"\r\n",
|
|
method,
|
|
path,
|
|
post && s->chunked_post ? "Transfer-Encoding: chunked\r\n" : "",
|
|
headers,
|
|
authstr ? authstr : "",
|
|
proxyauthstr ? "Proxy-" : "", proxyauthstr ? proxyauthstr : "");
|
|
|
|
av_log(h, AV_LOG_DEBUG, "request: %s\n", s->buffer);
|
|
|
|
if ((err = ffurl_write(s->hd, s->buffer, strlen(s->buffer))) < 0)
|
|
goto done;
|
|
|
|
if (s->post_data)
|
|
if ((err = ffurl_write(s->hd, s->post_data, s->post_datalen)) < 0)
|
|
goto done;
|
|
|
|
/* init input buffer */
|
|
s->buf_ptr = s->buffer;
|
|
s->buf_end = s->buffer;
|
|
s->line_count = 0;
|
|
s->off = 0;
|
|
s->icy_data_read = 0;
|
|
s->filesize = -1;
|
|
s->willclose = 0;
|
|
s->end_chunked_post = 0;
|
|
s->end_header = 0;
|
|
if (post && !s->post_data && !send_expect_100) {
|
|
/* Pretend that it did work. We didn't read any header yet, since
|
|
* we've still to send the POST data, but the code calling this
|
|
* function will check http_code after we return. */
|
|
s->http_code = 200;
|
|
err = 0;
|
|
goto done;
|
|
}
|
|
|
|
/* wait for header */
|
|
err = http_read_header(h, new_location);
|
|
if (err < 0)
|
|
goto done;
|
|
|
|
if (*new_location)
|
|
s->off = off;
|
|
|
|
err = (off == s->off) ? 0 : -1;
|
|
done:
|
|
av_freep(&authstr);
|
|
av_freep(&proxyauthstr);
|
|
return err;
|
|
}
|
|
|
|
static int http_buf_read(URLContext *h, uint8_t *buf, int size)
|
|
{
|
|
HTTPContext *s = h->priv_data;
|
|
int len;
|
|
/* read bytes from input buffer first */
|
|
len = s->buf_end - s->buf_ptr;
|
|
if (len > 0) {
|
|
if (len > size)
|
|
len = size;
|
|
memcpy(buf, s->buf_ptr, len);
|
|
s->buf_ptr += len;
|
|
} else {
|
|
if ((!s->willclose || s->chunksize < 0) &&
|
|
s->filesize >= 0 && s->off >= s->filesize)
|
|
return AVERROR_EOF;
|
|
len = ffurl_read(s->hd, buf, size);
|
|
if (!len && (!s->willclose || s->chunksize < 0) &&
|
|
s->filesize >= 0 && s->off < s->filesize) {
|
|
av_log(h, AV_LOG_ERROR,
|
|
"Stream ends prematurely at %"PRId64", should be %"PRId64"\n",
|
|
s->off, s->filesize
|
|
);
|
|
return AVERROR(EIO);
|
|
}
|
|
}
|
|
if (len > 0) {
|
|
s->off += len;
|
|
if (s->chunksize > 0)
|
|
s->chunksize -= len;
|
|
}
|
|
return len;
|
|
}
|
|
|
|
#if CONFIG_ZLIB
|
|
#define DECOMPRESS_BUF_SIZE (256 * 1024)
|
|
static int http_buf_read_compressed(URLContext *h, uint8_t *buf, int size)
|
|
{
|
|
HTTPContext *s = h->priv_data;
|
|
int ret;
|
|
|
|
if (!s->inflate_buffer) {
|
|
s->inflate_buffer = av_malloc(DECOMPRESS_BUF_SIZE);
|
|
if (!s->inflate_buffer)
|
|
return AVERROR(ENOMEM);
|
|
}
|
|
|
|
if (s->inflate_stream.avail_in == 0) {
|
|
int read = http_buf_read(h, s->inflate_buffer, DECOMPRESS_BUF_SIZE);
|
|
if (read <= 0)
|
|
return read;
|
|
s->inflate_stream.next_in = s->inflate_buffer;
|
|
s->inflate_stream.avail_in = read;
|
|
}
|
|
|
|
s->inflate_stream.avail_out = size;
|
|
s->inflate_stream.next_out = buf;
|
|
|
|
ret = inflate(&s->inflate_stream, Z_SYNC_FLUSH);
|
|
if (ret != Z_OK && ret != Z_STREAM_END)
|
|
av_log(h, AV_LOG_WARNING, "inflate return value: %d, %s\n",
|
|
ret, s->inflate_stream.msg);
|
|
|
|
return size - s->inflate_stream.avail_out;
|
|
}
|
|
#endif /* CONFIG_ZLIB */
|
|
|
|
static int64_t http_seek_internal(URLContext *h, int64_t off, int whence, int force_reconnect);
|
|
|
|
static int http_read_stream(URLContext *h, uint8_t *buf, int size)
|
|
{
|
|
HTTPContext *s = h->priv_data;
|
|
int err, new_location, read_ret, seek_ret;
|
|
|
|
if (!s->hd)
|
|
return AVERROR_EOF;
|
|
|
|
if (s->end_chunked_post && !s->end_header) {
|
|
err = http_read_header(h, &new_location);
|
|
if (err < 0)
|
|
return err;
|
|
}
|
|
|
|
if (s->chunksize >= 0) {
|
|
if (!s->chunksize) {
|
|
char line[32];
|
|
|
|
do {
|
|
if ((err = http_get_line(s, line, sizeof(line))) < 0)
|
|
return err;
|
|
} while (!*line); /* skip CR LF from last chunk */
|
|
|
|
s->chunksize = strtoll(line, NULL, 16);
|
|
|
|
av_log(NULL, AV_LOG_TRACE, "Chunked encoding data size: %"PRId64"'\n",
|
|
s->chunksize);
|
|
|
|
if (!s->chunksize)
|
|
return 0;
|
|
}
|
|
size = FFMIN(size, s->chunksize);
|
|
}
|
|
#if CONFIG_ZLIB
|
|
if (s->compressed)
|
|
return http_buf_read_compressed(h, buf, size);
|
|
#endif /* CONFIG_ZLIB */
|
|
read_ret = http_buf_read(h, buf, size);
|
|
if (read_ret < 0 && s->reconnect && !h->is_streamed && s->filesize > 0 && s->off < s->filesize) {
|
|
av_log(h, AV_LOG_INFO, "Will reconnect at %"PRId64".\n", s->off);
|
|
seek_ret = http_seek_internal(h, s->off, SEEK_SET, 1);
|
|
if (seek_ret != s->off) {
|
|
av_log(h, AV_LOG_ERROR, "Failed to reconnect at %"PRId64".\n", s->off);
|
|
return read_ret;
|
|
}
|
|
|
|
read_ret = http_buf_read(h, buf, size);
|
|
}
|
|
|
|
return read_ret;
|
|
}
|
|
|
|
// Like http_read_stream(), but no short reads.
|
|
// Assumes partial reads are an error.
|
|
static int http_read_stream_all(URLContext *h, uint8_t *buf, int size)
|
|
{
|
|
int pos = 0;
|
|
while (pos < size) {
|
|
int len = http_read_stream(h, buf + pos, size - pos);
|
|
if (len < 0)
|
|
return len;
|
|
pos += len;
|
|
}
|
|
return pos;
|
|
}
|
|
|
|
static void update_metadata(HTTPContext *s, char *data)
|
|
{
|
|
char *key;
|
|
char *val;
|
|
char *end;
|
|
char *next = data;
|
|
|
|
while (*next) {
|
|
key = next;
|
|
val = strstr(key, "='");
|
|
if (!val)
|
|
break;
|
|
end = strstr(val, "';");
|
|
if (!end)
|
|
break;
|
|
|
|
*val = '\0';
|
|
*end = '\0';
|
|
val += 2;
|
|
|
|
av_dict_set(&s->metadata, key, val, 0);
|
|
|
|
next = end + 2;
|
|
}
|
|
}
|
|
|
|
static int store_icy(URLContext *h, int size)
|
|
{
|
|
HTTPContext *s = h->priv_data;
|
|
/* until next metadata packet */
|
|
int remaining = s->icy_metaint - s->icy_data_read;
|
|
|
|
if (remaining < 0)
|
|
return AVERROR_INVALIDDATA;
|
|
|
|
if (!remaining) {
|
|
/* The metadata packet is variable sized. It has a 1 byte header
|
|
* which sets the length of the packet (divided by 16). If it's 0,
|
|
* the metadata doesn't change. After the packet, icy_metaint bytes
|
|
* of normal data follows. */
|
|
uint8_t ch;
|
|
int len = http_read_stream_all(h, &ch, 1);
|
|
if (len < 0)
|
|
return len;
|
|
if (ch > 0) {
|
|
char data[255 * 16 + 1];
|
|
int ret;
|
|
len = ch * 16;
|
|
ret = http_read_stream_all(h, data, len);
|
|
if (ret < 0)
|
|
return ret;
|
|
data[len + 1] = 0;
|
|
if ((ret = av_opt_set(s, "icy_metadata_packet", data, 0)) < 0)
|
|
return ret;
|
|
update_metadata(s, data);
|
|
}
|
|
s->icy_data_read = 0;
|
|
remaining = s->icy_metaint;
|
|
}
|
|
|
|
return FFMIN(size, remaining);
|
|
}
|
|
|
|
static int http_read(URLContext *h, uint8_t *buf, int size)
|
|
{
|
|
HTTPContext *s = h->priv_data;
|
|
|
|
if (s->icy_metaint > 0) {
|
|
size = store_icy(h, size);
|
|
if (size < 0)
|
|
return size;
|
|
}
|
|
|
|
size = http_read_stream(h, buf, size);
|
|
if (size > 0)
|
|
s->icy_data_read += size;
|
|
return size;
|
|
}
|
|
|
|
/* used only when posting data */
|
|
static int http_write(URLContext *h, const uint8_t *buf, int size)
|
|
{
|
|
char temp[11] = ""; /* 32-bit hex + CRLF + nul */
|
|
int ret;
|
|
char crlf[] = "\r\n";
|
|
HTTPContext *s = h->priv_data;
|
|
|
|
if (!s->chunked_post) {
|
|
/* non-chunked data is sent without any special encoding */
|
|
return ffurl_write(s->hd, buf, size);
|
|
}
|
|
|
|
/* silently ignore zero-size data since chunk encoding that would
|
|
* signal EOF */
|
|
if (size > 0) {
|
|
/* upload data using chunked encoding */
|
|
snprintf(temp, sizeof(temp), "%x\r\n", size);
|
|
|
|
if ((ret = ffurl_write(s->hd, temp, strlen(temp))) < 0 ||
|
|
(ret = ffurl_write(s->hd, buf, size)) < 0 ||
|
|
(ret = ffurl_write(s->hd, crlf, sizeof(crlf) - 1)) < 0)
|
|
return ret;
|
|
}
|
|
return size;
|
|
}
|
|
|
|
static int http_shutdown(URLContext *h, int flags)
|
|
{
|
|
int ret = 0;
|
|
char footer[] = "0\r\n\r\n";
|
|
HTTPContext *s = h->priv_data;
|
|
|
|
/* signal end of chunked encoding if used */
|
|
if ((flags & AVIO_FLAG_WRITE) && s->chunked_post) {
|
|
ret = ffurl_write(s->hd, footer, sizeof(footer) - 1);
|
|
ret = ret > 0 ? 0 : ret;
|
|
s->end_chunked_post = 1;
|
|
}
|
|
|
|
return ret;
|
|
}
|
|
|
|
static int http_close(URLContext *h)
|
|
{
|
|
int ret = 0;
|
|
HTTPContext *s = h->priv_data;
|
|
|
|
#if CONFIG_ZLIB
|
|
inflateEnd(&s->inflate_stream);
|
|
av_freep(&s->inflate_buffer);
|
|
#endif /* CONFIG_ZLIB */
|
|
|
|
if (!s->end_chunked_post)
|
|
/* Close the write direction by sending the end of chunked encoding. */
|
|
ret = http_shutdown(h, h->flags);
|
|
|
|
if (s->hd)
|
|
ffurl_closep(&s->hd);
|
|
av_dict_free(&s->chained_options);
|
|
return ret;
|
|
}
|
|
|
|
static int64_t http_seek_internal(URLContext *h, int64_t off, int whence, int force_reconnect)
|
|
{
|
|
HTTPContext *s = h->priv_data;
|
|
URLContext *old_hd = s->hd;
|
|
int64_t old_off = s->off;
|
|
uint8_t old_buf[BUFFER_SIZE];
|
|
int old_buf_size, ret;
|
|
AVDictionary *options = NULL;
|
|
|
|
if (whence == AVSEEK_SIZE)
|
|
return s->filesize;
|
|
else if (!force_reconnect &&
|
|
((whence == SEEK_CUR && off == 0) ||
|
|
(whence == SEEK_SET && off == s->off)))
|
|
return s->off;
|
|
else if ((s->filesize == -1 && whence == SEEK_END) || h->is_streamed)
|
|
return AVERROR(ENOSYS);
|
|
|
|
if (whence == SEEK_CUR)
|
|
off += s->off;
|
|
else if (whence == SEEK_END)
|
|
off += s->filesize;
|
|
else if (whence != SEEK_SET)
|
|
return AVERROR(EINVAL);
|
|
if (off < 0)
|
|
return AVERROR(EINVAL);
|
|
s->off = off;
|
|
|
|
/* we save the old context in case the seek fails */
|
|
old_buf_size = s->buf_end - s->buf_ptr;
|
|
memcpy(old_buf, s->buf_ptr, old_buf_size);
|
|
s->hd = NULL;
|
|
|
|
/* if it fails, continue on old connection */
|
|
if ((ret = http_open_cnx(h, &options)) < 0) {
|
|
av_dict_free(&options);
|
|
memcpy(s->buffer, old_buf, old_buf_size);
|
|
s->buf_ptr = s->buffer;
|
|
s->buf_end = s->buffer + old_buf_size;
|
|
s->hd = old_hd;
|
|
s->off = old_off;
|
|
return ret;
|
|
}
|
|
av_dict_free(&options);
|
|
ffurl_close(old_hd);
|
|
return off;
|
|
}
|
|
|
|
static int64_t http_seek(URLContext *h, int64_t off, int whence)
|
|
{
|
|
return http_seek_internal(h, off, whence, 0);
|
|
}
|
|
|
|
static int http_get_file_handle(URLContext *h)
|
|
{
|
|
HTTPContext *s = h->priv_data;
|
|
return ffurl_get_file_handle(s->hd);
|
|
}
|
|
|
|
#define HTTP_CLASS(flavor) \
|
|
static const AVClass flavor ## _context_class = { \
|
|
.class_name = # flavor, \
|
|
.item_name = av_default_item_name, \
|
|
.option = options, \
|
|
.version = LIBAVUTIL_VERSION_INT, \
|
|
}
|
|
|
|
#if CONFIG_HTTP_PROTOCOL
|
|
HTTP_CLASS(http);
|
|
|
|
URLProtocol ff_http_protocol = {
|
|
.name = "http",
|
|
.url_open2 = http_open,
|
|
.url_read = http_read,
|
|
.url_write = http_write,
|
|
.url_seek = http_seek,
|
|
.url_close = http_close,
|
|
.url_get_file_handle = http_get_file_handle,
|
|
.url_shutdown = http_shutdown,
|
|
.priv_data_size = sizeof(HTTPContext),
|
|
.priv_data_class = &http_context_class,
|
|
.flags = URL_PROTOCOL_FLAG_NETWORK,
|
|
};
|
|
#endif /* CONFIG_HTTP_PROTOCOL */
|
|
|
|
#if CONFIG_HTTPS_PROTOCOL
|
|
HTTP_CLASS(https);
|
|
|
|
URLProtocol ff_https_protocol = {
|
|
.name = "https",
|
|
.url_open2 = http_open,
|
|
.url_read = http_read,
|
|
.url_write = http_write,
|
|
.url_seek = http_seek,
|
|
.url_close = http_close,
|
|
.url_get_file_handle = http_get_file_handle,
|
|
.url_shutdown = http_shutdown,
|
|
.priv_data_size = sizeof(HTTPContext),
|
|
.priv_data_class = &https_context_class,
|
|
.flags = URL_PROTOCOL_FLAG_NETWORK,
|
|
};
|
|
#endif /* CONFIG_HTTPS_PROTOCOL */
|
|
|
|
#if CONFIG_HTTPPROXY_PROTOCOL
|
|
static int http_proxy_close(URLContext *h)
|
|
{
|
|
HTTPContext *s = h->priv_data;
|
|
if (s->hd)
|
|
ffurl_closep(&s->hd);
|
|
return 0;
|
|
}
|
|
|
|
static int http_proxy_open(URLContext *h, const char *uri, int flags)
|
|
{
|
|
HTTPContext *s = h->priv_data;
|
|
char hostname[1024], hoststr[1024];
|
|
char auth[1024], pathbuf[1024], *path;
|
|
char lower_url[100];
|
|
int port, ret = 0, attempts = 0;
|
|
HTTPAuthType cur_auth_type;
|
|
char *authstr;
|
|
int new_loc;
|
|
|
|
if( s->seekable == 1 )
|
|
h->is_streamed = 0;
|
|
else
|
|
h->is_streamed = 1;
|
|
|
|
av_url_split(NULL, 0, auth, sizeof(auth), hostname, sizeof(hostname), &port,
|
|
pathbuf, sizeof(pathbuf), uri);
|
|
ff_url_join(hoststr, sizeof(hoststr), NULL, NULL, hostname, port, NULL);
|
|
path = pathbuf;
|
|
if (*path == '/')
|
|
path++;
|
|
|
|
ff_url_join(lower_url, sizeof(lower_url), "tcp", NULL, hostname, port,
|
|
NULL);
|
|
redo:
|
|
ret = ffurl_open(&s->hd, lower_url, AVIO_FLAG_READ_WRITE,
|
|
&h->interrupt_callback, NULL);
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
authstr = ff_http_auth_create_response(&s->proxy_auth_state, auth,
|
|
path, "CONNECT");
|
|
snprintf(s->buffer, sizeof(s->buffer),
|
|
"CONNECT %s HTTP/1.1\r\n"
|
|
"Host: %s\r\n"
|
|
"Connection: close\r\n"
|
|
"%s%s"
|
|
"\r\n",
|
|
path,
|
|
hoststr,
|
|
authstr ? "Proxy-" : "", authstr ? authstr : "");
|
|
av_freep(&authstr);
|
|
|
|
if ((ret = ffurl_write(s->hd, s->buffer, strlen(s->buffer))) < 0)
|
|
goto fail;
|
|
|
|
s->buf_ptr = s->buffer;
|
|
s->buf_end = s->buffer;
|
|
s->line_count = 0;
|
|
s->filesize = -1;
|
|
cur_auth_type = s->proxy_auth_state.auth_type;
|
|
|
|
/* Note: This uses buffering, potentially reading more than the
|
|
* HTTP header. If tunneling a protocol where the server starts
|
|
* the conversation, we might buffer part of that here, too.
|
|
* Reading that requires using the proper ffurl_read() function
|
|
* on this URLContext, not using the fd directly (as the tls
|
|
* protocol does). This shouldn't be an issue for tls though,
|
|
* since the client starts the conversation there, so there
|
|
* is no extra data that we might buffer up here.
|
|
*/
|
|
ret = http_read_header(h, &new_loc);
|
|
if (ret < 0)
|
|
goto fail;
|
|
|
|
attempts++;
|
|
if (s->http_code == 407 &&
|
|
(cur_auth_type == HTTP_AUTH_NONE || s->proxy_auth_state.stale) &&
|
|
s->proxy_auth_state.auth_type != HTTP_AUTH_NONE && attempts < 2) {
|
|
ffurl_closep(&s->hd);
|
|
goto redo;
|
|
}
|
|
|
|
if (s->http_code < 400)
|
|
return 0;
|
|
ret = ff_http_averror(s->http_code, AVERROR(EIO));
|
|
|
|
fail:
|
|
http_proxy_close(h);
|
|
return ret;
|
|
}
|
|
|
|
static int http_proxy_write(URLContext *h, const uint8_t *buf, int size)
|
|
{
|
|
HTTPContext *s = h->priv_data;
|
|
return ffurl_write(s->hd, buf, size);
|
|
}
|
|
|
|
URLProtocol ff_httpproxy_protocol = {
|
|
.name = "httpproxy",
|
|
.url_open = http_proxy_open,
|
|
.url_read = http_buf_read,
|
|
.url_write = http_proxy_write,
|
|
.url_close = http_proxy_close,
|
|
.url_get_file_handle = http_get_file_handle,
|
|
.priv_data_size = sizeof(HTTPContext),
|
|
.flags = URL_PROTOCOL_FLAG_NETWORK,
|
|
};
|
|
#endif /* CONFIG_HTTPPROXY_PROTOCOL */
|