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0c6e5f321b
AVCodec is only ever used as an incomplete type (i.e. via a pointer to an AVCodec) in avformat.h and it is not really part of the core of avformat.h or libavformat; almost none of our internal users make use of it (and none make use of hwcontext.h, which is implicitly included). So switch to use struct AVCodec, but continue to include codec.h for external users for compatibility. Also, do the same for AVFrame and frame.h, which is implicitly included by codec.h (via lavu/hwcontext.h). Also, remove an unnecessary inclusion of <time.h>. Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>
2145 lines
69 KiB
C
2145 lines
69 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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#include "config_components.h"
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#include <time.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/avassert.h"
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#include "libavutil/avstring.h"
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#include "libavutil/bprint.h"
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#include "libavutil/getenv_utf8.h"
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#include "libavutil/opt.h"
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#include "libavutil/time.h"
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#include "libavutil/parseutils.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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#include "version.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 + HTTP_HEADERS_SIZE)
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#define MAX_REDIRECTS 8
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#define MAX_CACHED_REDIRECTS 32
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#define HTTP_SINGLE 1
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#define HTTP_MUTLI 2
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#define MAX_EXPIRY 19
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#define WHITESPACES " \n\t\r"
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typedef enum {
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LOWER_PROTO,
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READ_HEADERS,
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WRITE_REPLY_HEADERS,
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FINISH
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}HandshakeState;
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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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uint64_t chunksize;
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int chunkend;
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uint64_t off, end_off, filesize;
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char *uri;
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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 *http_proxy;
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char *headers;
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char *mime_type;
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char *http_version;
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char *user_agent;
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char *referer;
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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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uint64_t 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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uint64_t 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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/* -1 = try to send if applicable, 0 = always disabled, 1 = always enabled */
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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 reconnect_at_eof;
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int reconnect_on_network_error;
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int reconnect_streamed;
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int reconnect_delay_max;
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char *reconnect_on_http_error;
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int listen;
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char *resource;
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int reply_code;
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int is_multi_client;
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HandshakeState handshake_step;
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int is_connected_server;
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int short_seek_size;
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int64_t expires;
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char *new_location;
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AVDictionary *redirect_cache;
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uint64_t filesize_from_content_range;
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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_BOOL, { .i64 = -1 }, -1, 1, D },
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{ "chunked_post", "use chunked transfer-encoding for posts", OFFSET(chunked_post), AV_OPT_TYPE_BOOL, { .i64 = 1 }, 0, 1, E },
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{ "http_proxy", "set HTTP proxy to tunnel through", OFFSET(http_proxy), AV_OPT_TYPE_STRING, { .str = NULL }, 0, 0, D | E },
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{ "headers", "set custom HTTP headers, can override built in default headers", OFFSET(headers), AV_OPT_TYPE_STRING, { .str = NULL }, 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, { .str = NULL }, 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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{ "referer", "override referer header", OFFSET(referer), AV_OPT_TYPE_STRING, { .str = NULL }, 0, 0, D },
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{ "multiple_requests", "use persistent connections", OFFSET(multiple_requests), AV_OPT_TYPE_BOOL, { .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, { .str = NULL }, 0, 0, AV_OPT_FLAG_EXPORT | AV_OPT_FLAG_READONLY },
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{ "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 },
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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, { .str = NULL }, 0, 0, D },
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{ "icy", "request ICY metadata", OFFSET(icy), AV_OPT_TYPE_BOOL, { .i64 = 1 }, 0, 1, D },
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{ "icy_metadata_headers", "return ICY metadata headers", OFFSET(icy_metadata_headers), AV_OPT_TYPE_STRING, { .str = NULL }, 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, { .str = NULL }, 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_BOOL, { .i64 = -1 }, -1, 1, E },
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{ "location", "The actual location of the data received", OFFSET(location), AV_OPT_TYPE_STRING, { .str = NULL }, 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 or set the expected HTTP method from a client", OFFSET(method), AV_OPT_TYPE_STRING, { .str = NULL }, 0, 0, D | E },
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{ "reconnect", "auto reconnect after disconnect before EOF", OFFSET(reconnect), AV_OPT_TYPE_BOOL, { .i64 = 0 }, 0, 1, D },
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{ "reconnect_at_eof", "auto reconnect at EOF", OFFSET(reconnect_at_eof), AV_OPT_TYPE_BOOL, { .i64 = 0 }, 0, 1, D },
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{ "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 },
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{ "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 },
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{ "reconnect_streamed", "auto reconnect streamed / non seekable streams", OFFSET(reconnect_streamed), AV_OPT_TYPE_BOOL, { .i64 = 0 }, 0, 1, D },
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{ "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 },
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{ "listen", "listen on HTTP", OFFSET(listen), AV_OPT_TYPE_INT, { .i64 = 0 }, 0, 2, D | E },
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{ "resource", "The resource requested by a client", OFFSET(resource), AV_OPT_TYPE_STRING, { .str = NULL }, 0, 0, E },
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{ "reply_code", "The http status code to return to a client", OFFSET(reply_code), AV_OPT_TYPE_INT, { .i64 = 200}, INT_MIN, 599, E},
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{ "short_seek_size", "Threshold to favor readahead over seek.", OFFSET(short_seek_size), AV_OPT_TYPE_INT, { .i64 = 0 }, 0, INT_MAX, D },
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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);
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static int http_read_header(URLContext *h);
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static int http_shutdown(URLContext *h, int flags);
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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 *env_http_proxy, *env_no_proxy;
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char *hashmark;
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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], sanitized_path[MAX_URL_SIZE + 1];
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char buf[1024], urlbuf[MAX_URL_SIZE];
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int port, use_proxy, err = 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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env_http_proxy = getenv_utf8("http_proxy");
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proxy_path = s->http_proxy ? s->http_proxy : env_http_proxy;
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env_no_proxy = getenv_utf8("no_proxy");
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use_proxy = !ff_http_match_no_proxy(env_no_proxy, hostname) &&
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proxy_path && av_strstart(proxy_path, "http://", NULL);
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freeenv_utf8(env_no_proxy);
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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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/* pass http_proxy to underlying protocol */
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if (s->http_proxy) {
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err = av_dict_set(options, "http_proxy", s->http_proxy, 0);
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if (err < 0)
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goto end;
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}
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}
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if (port < 0)
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port = 80;
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hashmark = strchr(path1, '#');
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if (hashmark)
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*hashmark = '\0';
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if (path1[0] == '\0') {
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path = "/";
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} else if (path1[0] == '?') {
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snprintf(sanitized_path, sizeof(sanitized_path), "/%s", path1);
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path = sanitized_path;
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} else {
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path = path1;
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}
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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_whitelist(&s->hd, buf, AVIO_FLAG_READ_WRITE,
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&h->interrupt_callback, options,
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h->protocol_whitelist, h->protocol_blacklist, h);
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}
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end:
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freeenv_utf8(env_http_proxy);
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return err < 0 ? err : http_connect(
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h, path, local_path, hoststr, auth, proxyauth);
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}
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static int http_should_reconnect(HTTPContext *s, int err)
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{
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const char *status_group;
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char http_code[4];
|
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switch (err) {
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case AVERROR_HTTP_BAD_REQUEST:
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case AVERROR_HTTP_UNAUTHORIZED:
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case AVERROR_HTTP_FORBIDDEN:
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case AVERROR_HTTP_NOT_FOUND:
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case AVERROR_HTTP_OTHER_4XX:
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status_group = "4xx";
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break;
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|
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case AVERROR_HTTP_SERVER_ERROR:
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status_group = "5xx";
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break;
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default:
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return s->reconnect_on_network_error;
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}
|
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|
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if (!s->reconnect_on_http_error)
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return 0;
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|
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if (av_match_list(status_group, s->reconnect_on_http_error, ',') > 0)
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return 1;
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|
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snprintf(http_code, sizeof(http_code), "%d", s->http_code);
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return av_match_list(http_code, s->reconnect_on_http_error, ',') > 0;
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}
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|
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static char *redirect_cache_get(HTTPContext *s)
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{
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AVDictionaryEntry *re;
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int64_t expiry;
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char *delim;
|
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|
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re = av_dict_get(s->redirect_cache, s->location, NULL, AV_DICT_MATCH_CASE);
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if (!re) {
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return NULL;
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}
|
|
|
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delim = strchr(re->value, ';');
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if (!delim) {
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return NULL;
|
|
}
|
|
|
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expiry = strtoll(re->value, NULL, 10);
|
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if (time(NULL) > expiry) {
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return NULL;
|
|
}
|
|
|
|
return delim + 1;
|
|
}
|
|
|
|
static int redirect_cache_set(HTTPContext *s, const char *source, const char *dest, int64_t expiry)
|
|
{
|
|
char *value;
|
|
int ret;
|
|
|
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value = av_asprintf("%"PRIi64";%s", expiry, dest);
|
|
if (!value) {
|
|
return AVERROR(ENOMEM);
|
|
}
|
|
|
|
ret = av_dict_set(&s->redirect_cache, source, value, AV_DICT_MATCH_CASE | AV_DICT_DONT_STRDUP_VAL);
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
return 0;
|
|
}
|
|
|
|
/* return non zero if error */
|
|
static int http_open_cnx(URLContext *h, AVDictionary **options)
|
|
{
|
|
HTTPAuthType cur_auth_type, cur_proxy_auth_type;
|
|
HTTPContext *s = h->priv_data;
|
|
int ret, attempts = 0, redirects = 0;
|
|
int reconnect_delay = 0;
|
|
uint64_t off;
|
|
char *cached;
|
|
|
|
redo:
|
|
|
|
cached = redirect_cache_get(s);
|
|
if (cached) {
|
|
av_free(s->location);
|
|
s->location = av_strdup(cached);
|
|
if (!s->location) {
|
|
ret = AVERROR(ENOMEM);
|
|
goto fail;
|
|
}
|
|
goto redo;
|
|
}
|
|
|
|
av_dict_copy(options, s->chained_options, 0);
|
|
|
|
cur_auth_type = s->auth_state.auth_type;
|
|
cur_proxy_auth_type = s->auth_state.auth_type;
|
|
|
|
off = s->off;
|
|
ret = http_open_cnx_internal(h, options);
|
|
if (ret < 0) {
|
|
if (!http_should_reconnect(s, ret) ||
|
|
reconnect_delay > s->reconnect_delay_max)
|
|
goto fail;
|
|
|
|
av_log(h, AV_LOG_WARNING, "Will reconnect at %"PRIu64" in %d second(s).\n", off, reconnect_delay);
|
|
ret = ff_network_sleep_interruptible(1000U * 1000 * reconnect_delay, &h->interrupt_callback);
|
|
if (ret != AVERROR(ETIMEDOUT))
|
|
goto fail;
|
|
reconnect_delay = 1 + 2 * reconnect_delay;
|
|
|
|
/* restore the offset (http_connect resets it) */
|
|
s->off = off;
|
|
|
|
ffurl_closep(&s->hd);
|
|
goto redo;
|
|
}
|
|
|
|
attempts++;
|
|
if (s->http_code == 401) {
|
|
if ((cur_auth_type == HTTP_AUTH_NONE || s->auth_state.stale) &&
|
|
s->auth_state.auth_type != HTTP_AUTH_NONE && attempts < 4) {
|
|
ffurl_closep(&s->hd);
|
|
goto redo;
|
|
} else
|
|
goto fail;
|
|
}
|
|
if (s->http_code == 407) {
|
|
if ((cur_proxy_auth_type == HTTP_AUTH_NONE || s->proxy_auth_state.stale) &&
|
|
s->proxy_auth_state.auth_type != HTTP_AUTH_NONE && attempts < 4) {
|
|
ffurl_closep(&s->hd);
|
|
goto redo;
|
|
} else
|
|
goto fail;
|
|
}
|
|
if ((s->http_code == 301 || s->http_code == 302 ||
|
|
s->http_code == 303 || s->http_code == 307 || s->http_code == 308) &&
|
|
s->new_location) {
|
|
/* url moved, get next */
|
|
ffurl_closep(&s->hd);
|
|
if (redirects++ >= MAX_REDIRECTS)
|
|
return AVERROR(EIO);
|
|
|
|
if (!s->expires) {
|
|
s->expires = (s->http_code == 301 || s->http_code == 308) ? INT64_MAX : -1;
|
|
}
|
|
|
|
if (s->expires > time(NULL) && av_dict_count(s->redirect_cache) < MAX_CACHED_REDIRECTS) {
|
|
redirect_cache_set(s, s->location, s->new_location, s->expires);
|
|
}
|
|
|
|
av_free(s->location);
|
|
s->location = s->new_location;
|
|
s->new_location = NULL;
|
|
|
|
/* Restart the authentication process with the new target, which
|
|
* might use a different auth mechanism. */
|
|
memset(&s->auth_state, 0, sizeof(s->auth_state));
|
|
attempts = 0;
|
|
goto redo;
|
|
}
|
|
return 0;
|
|
|
|
fail:
|
|
if (s->hd)
|
|
ffurl_closep(&s->hd);
|
|
if (ret < 0)
|
|
return ret;
|
|
return ff_http_averror(s->http_code, AVERROR(EIO));
|
|
}
|
|
|
|
int ff_http_do_new_request(URLContext *h, const char *uri) {
|
|
return ff_http_do_new_request2(h, uri, NULL);
|
|
}
|
|
|
|
int ff_http_do_new_request2(URLContext *h, const char *uri, AVDictionary **opts)
|
|
{
|
|
HTTPContext *s = h->priv_data;
|
|
AVDictionary *options = NULL;
|
|
int ret;
|
|
char hostname1[1024], hostname2[1024], proto1[10], proto2[10];
|
|
int port1, port2;
|
|
|
|
if (!h->prot ||
|
|
!(!strcmp(h->prot->name, "http") ||
|
|
!strcmp(h->prot->name, "https")))
|
|
return AVERROR(EINVAL);
|
|
|
|
av_url_split(proto1, sizeof(proto1), NULL, 0,
|
|
hostname1, sizeof(hostname1), &port1,
|
|
NULL, 0, s->location);
|
|
av_url_split(proto2, sizeof(proto2), NULL, 0,
|
|
hostname2, sizeof(hostname2), &port2,
|
|
NULL, 0, uri);
|
|
if (port1 != port2 || strncmp(hostname1, hostname2, sizeof(hostname2)) != 0) {
|
|
av_log(h, AV_LOG_ERROR, "Cannot reuse HTTP connection for different host: %s:%d != %s:%d\n",
|
|
hostname1, port1,
|
|
hostname2, port2
|
|
);
|
|
return AVERROR(EINVAL);
|
|
}
|
|
|
|
if (!s->end_chunked_post) {
|
|
ret = http_shutdown(h, h->flags);
|
|
if (ret < 0)
|
|
return ret;
|
|
}
|
|
|
|
if (s->willclose)
|
|
return AVERROR_EOF;
|
|
|
|
s->end_chunked_post = 0;
|
|
s->chunkend = 0;
|
|
s->off = 0;
|
|
s->icy_data_read = 0;
|
|
|
|
av_free(s->location);
|
|
s->location = av_strdup(uri);
|
|
if (!s->location)
|
|
return AVERROR(ENOMEM);
|
|
|
|
av_free(s->uri);
|
|
s->uri = av_strdup(uri);
|
|
if (!s->uri)
|
|
return AVERROR(ENOMEM);
|
|
|
|
if ((ret = av_opt_set_dict(s, opts)) < 0)
|
|
return ret;
|
|
|
|
av_log(s, AV_LOG_INFO, "Opening \'%s\' for %s\n", uri, h->flags & AVIO_FLAG_WRITE ? "writing" : "reading");
|
|
ret = http_open_cnx(h, &options);
|
|
av_dict_free(&options);
|
|
return ret;
|
|
}
|
|
|
|
int ff_http_averror(int status_code, int default_averror)
|
|
{
|
|
switch (status_code) {
|
|
case 400: return AVERROR_HTTP_BAD_REQUEST;
|
|
case 401: return AVERROR_HTTP_UNAUTHORIZED;
|
|
case 403: return AVERROR_HTTP_FORBIDDEN;
|
|
case 404: return AVERROR_HTTP_NOT_FOUND;
|
|
default: break;
|
|
}
|
|
if (status_code >= 400 && status_code <= 499)
|
|
return AVERROR_HTTP_OTHER_4XX;
|
|
else if (status_code >= 500)
|
|
return AVERROR_HTTP_SERVER_ERROR;
|
|
else
|
|
return default_averror;
|
|
}
|
|
|
|
static int http_write_reply(URLContext* h, int status_code)
|
|
{
|
|
int ret, body = 0, reply_code, message_len;
|
|
const char *reply_text, *content_type;
|
|
HTTPContext *s = h->priv_data;
|
|
char message[BUFFER_SIZE];
|
|
content_type = "text/plain";
|
|
|
|
if (status_code < 0)
|
|
body = 1;
|
|
switch (status_code) {
|
|
case AVERROR_HTTP_BAD_REQUEST:
|
|
case 400:
|
|
reply_code = 400;
|
|
reply_text = "Bad Request";
|
|
break;
|
|
case AVERROR_HTTP_FORBIDDEN:
|
|
case 403:
|
|
reply_code = 403;
|
|
reply_text = "Forbidden";
|
|
break;
|
|
case AVERROR_HTTP_NOT_FOUND:
|
|
case 404:
|
|
reply_code = 404;
|
|
reply_text = "Not Found";
|
|
break;
|
|
case 200:
|
|
reply_code = 200;
|
|
reply_text = "OK";
|
|
content_type = s->content_type ? s->content_type : "application/octet-stream";
|
|
break;
|
|
case AVERROR_HTTP_SERVER_ERROR:
|
|
case 500:
|
|
reply_code = 500;
|
|
reply_text = "Internal server error";
|
|
break;
|
|
default:
|
|
return AVERROR(EINVAL);
|
|
}
|
|
if (body) {
|
|
s->chunked_post = 0;
|
|
message_len = snprintf(message, sizeof(message),
|
|
"HTTP/1.1 %03d %s\r\n"
|
|
"Content-Type: %s\r\n"
|
|
"Content-Length: %"SIZE_SPECIFIER"\r\n"
|
|
"%s"
|
|
"\r\n"
|
|
"%03d %s\r\n",
|
|
reply_code,
|
|
reply_text,
|
|
content_type,
|
|
strlen(reply_text) + 6, // 3 digit status code + space + \r\n
|
|
s->headers ? s->headers : "",
|
|
reply_code,
|
|
reply_text);
|
|
} else {
|
|
s->chunked_post = 1;
|
|
message_len = snprintf(message, sizeof(message),
|
|
"HTTP/1.1 %03d %s\r\n"
|
|
"Content-Type: %s\r\n"
|
|
"Transfer-Encoding: chunked\r\n"
|
|
"%s"
|
|
"\r\n",
|
|
reply_code,
|
|
reply_text,
|
|
content_type,
|
|
s->headers ? s->headers : "");
|
|
}
|
|
av_log(h, AV_LOG_TRACE, "HTTP reply header: \n%s----\n", message);
|
|
if ((ret = ffurl_write(s->hd, message, message_len)) < 0)
|
|
return ret;
|
|
return 0;
|
|
}
|
|
|
|
static void handle_http_errors(URLContext *h, int error)
|
|
{
|
|
av_assert0(error < 0);
|
|
http_write_reply(h, error);
|
|
}
|
|
|
|
static int http_handshake(URLContext *c)
|
|
{
|
|
int ret, err;
|
|
HTTPContext *ch = c->priv_data;
|
|
URLContext *cl = ch->hd;
|
|
switch (ch->handshake_step) {
|
|
case LOWER_PROTO:
|
|
av_log(c, AV_LOG_TRACE, "Lower protocol\n");
|
|
if ((ret = ffurl_handshake(cl)) > 0)
|
|
return 2 + ret;
|
|
if (ret < 0)
|
|
return ret;
|
|
ch->handshake_step = READ_HEADERS;
|
|
ch->is_connected_server = 1;
|
|
return 2;
|
|
case READ_HEADERS:
|
|
av_log(c, AV_LOG_TRACE, "Read headers\n");
|
|
if ((err = http_read_header(c)) < 0) {
|
|
handle_http_errors(c, err);
|
|
return err;
|
|
}
|
|
ch->handshake_step = WRITE_REPLY_HEADERS;
|
|
return 1;
|
|
case WRITE_REPLY_HEADERS:
|
|
av_log(c, AV_LOG_TRACE, "Reply code: %d\n", ch->reply_code);
|
|
if ((err = http_write_reply(c, ch->reply_code)) < 0)
|
|
return err;
|
|
ch->handshake_step = FINISH;
|
|
return 1;
|
|
case FINISH:
|
|
return 0;
|
|
}
|
|
// this should never be reached.
|
|
return AVERROR(EINVAL);
|
|
}
|
|
|
|
static int http_listen(URLContext *h, const char *uri, int flags,
|
|
AVDictionary **options) {
|
|
HTTPContext *s = h->priv_data;
|
|
int ret;
|
|
char hostname[1024], proto[10];
|
|
char lower_url[100];
|
|
const char *lower_proto = "tcp";
|
|
int port;
|
|
av_url_split(proto, sizeof(proto), NULL, 0, hostname, sizeof(hostname), &port,
|
|
NULL, 0, uri);
|
|
if (!strcmp(proto, "https"))
|
|
lower_proto = "tls";
|
|
ff_url_join(lower_url, sizeof(lower_url), lower_proto, NULL, hostname, port,
|
|
NULL);
|
|
if ((ret = av_dict_set_int(options, "listen", s->listen, 0)) < 0)
|
|
goto fail;
|
|
if ((ret = ffurl_open_whitelist(&s->hd, lower_url, AVIO_FLAG_READ_WRITE,
|
|
&h->interrupt_callback, options,
|
|
h->protocol_whitelist, h->protocol_blacklist, h
|
|
)) < 0)
|
|
goto fail;
|
|
s->handshake_step = LOWER_PROTO;
|
|
if (s->listen == HTTP_SINGLE) { /* single client */
|
|
s->reply_code = 200;
|
|
while ((ret = http_handshake(h)) > 0);
|
|
}
|
|
fail:
|
|
av_dict_free(&s->chained_options);
|
|
av_dict_free(&s->cookie_dict);
|
|
return ret;
|
|
}
|
|
|
|
static int http_open(URLContext *h, const char *uri, int flags,
|
|
AVDictionary **options)
|
|
{
|
|
HTTPContext *s = h->priv_data;
|
|
int ret;
|
|
|
|
if( s->seekable == 1 )
|
|
h->is_streamed = 0;
|
|
else
|
|
h->is_streamed = 1;
|
|
|
|
s->filesize = UINT64_MAX;
|
|
|
|
s->location = av_strdup(uri);
|
|
if (!s->location)
|
|
return AVERROR(ENOMEM);
|
|
|
|
s->uri = av_strdup(uri);
|
|
if (!s->uri)
|
|
return AVERROR(ENOMEM);
|
|
|
|
if (options)
|
|
av_dict_copy(&s->chained_options, *options, 0);
|
|
|
|
if (s->headers) {
|
|
int len = strlen(s->headers);
|
|
if (len < 2 || strcmp("\r\n", s->headers + len - 2)) {
|
|
av_log(h, AV_LOG_WARNING,
|
|
"No trailing CRLF found in HTTP header. Adding it.\n");
|
|
ret = av_reallocp(&s->headers, len + 3);
|
|
if (ret < 0)
|
|
goto bail_out;
|
|
s->headers[len] = '\r';
|
|
s->headers[len + 1] = '\n';
|
|
s->headers[len + 2] = '\0';
|
|
}
|
|
}
|
|
|
|
if (s->listen) {
|
|
return http_listen(h, uri, flags, options);
|
|
}
|
|
ret = http_open_cnx(h, options);
|
|
bail_out:
|
|
if (ret < 0) {
|
|
av_dict_free(&s->chained_options);
|
|
av_dict_free(&s->cookie_dict);
|
|
av_dict_free(&s->redirect_cache);
|
|
av_freep(&s->new_location);
|
|
av_freep(&s->uri);
|
|
}
|
|
return ret;
|
|
}
|
|
|
|
static int http_accept(URLContext *s, URLContext **c)
|
|
{
|
|
int ret;
|
|
HTTPContext *sc = s->priv_data;
|
|
HTTPContext *cc;
|
|
URLContext *sl = sc->hd;
|
|
URLContext *cl = NULL;
|
|
|
|
av_assert0(sc->listen);
|
|
if ((ret = ffurl_alloc(c, s->filename, s->flags, &sl->interrupt_callback)) < 0)
|
|
goto fail;
|
|
cc = (*c)->priv_data;
|
|
if ((ret = ffurl_accept(sl, &cl)) < 0)
|
|
goto fail;
|
|
cc->hd = cl;
|
|
cc->is_multi_client = 1;
|
|
return 0;
|
|
fail:
|
|
if (c) {
|
|
ffurl_closep(c);
|
|
}
|
|
return ret;
|
|
}
|
|
|
|
static int http_getc(HTTPContext *s)
|
|
{
|
|
int len;
|
|
if (s->buf_ptr >= s->buf_end) {
|
|
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];
|
|
ff_make_absolute_url(redirected_location, sizeof(redirected_location),
|
|
s->location, p);
|
|
av_freep(&s->new_location);
|
|
s->new_location = av_strdup(redirected_location);
|
|
if (!s->new_location)
|
|
return AVERROR(ENOMEM);
|
|
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 = strtoull(p, NULL, 10);
|
|
if ((slash = strchr(p, '/')) && strlen(slash) > 0)
|
|
s->filesize_from_content_range = strtoull(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_set_cookie_expiry_time(const char *exp_str, struct tm *buf)
|
|
{
|
|
char exp_buf[MAX_EXPIRY];
|
|
int i, j, exp_buf_len = MAX_EXPIRY-1;
|
|
char *expiry;
|
|
|
|
// strip off any punctuation or whitespace
|
|
for (i = 0, j = 0; exp_str[i] != '\0' && j < exp_buf_len; i++) {
|
|
if ((exp_str[i] >= '0' && exp_str[i] <= '9') ||
|
|
(exp_str[i] >= 'A' && exp_str[i] <= 'Z') ||
|
|
(exp_str[i] >= 'a' && exp_str[i] <= 'z')) {
|
|
exp_buf[j] = exp_str[i];
|
|
j++;
|
|
}
|
|
}
|
|
exp_buf[j] = '\0';
|
|
expiry = exp_buf;
|
|
|
|
// move the string beyond the day of week
|
|
while ((*expiry < '0' || *expiry > '9') && *expiry != '\0')
|
|
expiry++;
|
|
|
|
return av_small_strptime(expiry, "%d%b%Y%H%M%S", buf) ? 0 : AVERROR(EINVAL);
|
|
}
|
|
|
|
static int parse_set_cookie(const char *set_cookie, AVDictionary **dict)
|
|
{
|
|
char *param, *next_param, *cstr, *back;
|
|
char *saveptr = NULL;
|
|
|
|
if (!set_cookie[0])
|
|
return 0;
|
|
|
|
if (!(cstr = av_strdup(set_cookie)))
|
|
return AVERROR(EINVAL);
|
|
|
|
// strip any trailing whitespace
|
|
back = &cstr[strlen(cstr)-1];
|
|
while (strchr(WHITESPACES, *back)) {
|
|
*back='\0';
|
|
if (back == cstr)
|
|
break;
|
|
back--;
|
|
}
|
|
|
|
next_param = cstr;
|
|
while ((param = av_strtok(next_param, ";", &saveptr))) {
|
|
char *name, *value;
|
|
next_param = NULL;
|
|
param += strspn(param, WHITESPACES);
|
|
if ((name = av_strtok(param, "=", &value))) {
|
|
if (av_dict_set(dict, name, value, 0) < 0) {
|
|
av_free(cstr);
|
|
return -1;
|
|
}
|
|
}
|
|
}
|
|
|
|
av_free(cstr);
|
|
return 0;
|
|
}
|
|
|
|
static int parse_cookie(HTTPContext *s, const char *p, AVDictionary **cookies)
|
|
{
|
|
AVDictionary *new_params = NULL;
|
|
AVDictionaryEntry *e, *cookie_entry;
|
|
char *eql, *name;
|
|
|
|
// ensure the cookie is parsable
|
|
if (parse_set_cookie(p, &new_params))
|
|
return -1;
|
|
|
|
// if there is no cookie value there is nothing to parse
|
|
cookie_entry = av_dict_get(new_params, "", NULL, AV_DICT_IGNORE_SUFFIX);
|
|
if (!cookie_entry || !cookie_entry->value) {
|
|
av_dict_free(&new_params);
|
|
return -1;
|
|
}
|
|
|
|
// ensure the cookie is not expired or older than an existing value
|
|
if ((e = av_dict_get(new_params, "expires", NULL, 0)) && e->value) {
|
|
struct tm new_tm = {0};
|
|
if (!parse_set_cookie_expiry_time(e->value, &new_tm)) {
|
|
AVDictionaryEntry *e2;
|
|
|
|
// if the cookie has already expired ignore it
|
|
if (av_timegm(&new_tm) < av_gettime() / 1000000) {
|
|
av_dict_free(&new_params);
|
|
return 0;
|
|
}
|
|
|
|
// only replace an older cookie with the same name
|
|
e2 = av_dict_get(*cookies, cookie_entry->key, NULL, 0);
|
|
if (e2 && e2->value) {
|
|
AVDictionary *old_params = NULL;
|
|
if (!parse_set_cookie(p, &old_params)) {
|
|
e2 = av_dict_get(old_params, "expires", NULL, 0);
|
|
if (e2 && e2->value) {
|
|
struct tm old_tm = {0};
|
|
if (!parse_set_cookie_expiry_time(e->value, &old_tm)) {
|
|
if (av_timegm(&new_tm) < av_timegm(&old_tm)) {
|
|
av_dict_free(&new_params);
|
|
av_dict_free(&old_params);
|
|
return -1;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
av_dict_free(&old_params);
|
|
}
|
|
}
|
|
}
|
|
av_dict_free(&new_params);
|
|
|
|
// 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)
|
|
{
|
|
const AVDictionaryEntry *e = NULL;
|
|
int len = 1;
|
|
|
|
// determine how much memory is needed for the cookies string
|
|
while ((e = av_dict_iterate(dict, e)))
|
|
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_iterate(dict, e)))
|
|
av_strlcatf(*cookies, len, "%s%s\n", e->key, e->value);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static void parse_expires(HTTPContext *s, const char *p)
|
|
{
|
|
struct tm tm;
|
|
|
|
if (!parse_set_cookie_expiry_time(p, &tm)) {
|
|
s->expires = av_timegm(&tm);
|
|
}
|
|
}
|
|
|
|
static void parse_cache_control(HTTPContext *s, const char *p)
|
|
{
|
|
char *age;
|
|
int offset;
|
|
|
|
/* give 'Expires' higher priority over 'Cache-Control' */
|
|
if (s->expires) {
|
|
return;
|
|
}
|
|
|
|
if (av_stristr(p, "no-cache") || av_stristr(p, "no-store")) {
|
|
s->expires = -1;
|
|
return;
|
|
}
|
|
|
|
age = av_stristr(p, "s-maxage=");
|
|
offset = 9;
|
|
if (!age) {
|
|
age = av_stristr(p, "max-age=");
|
|
offset = 8;
|
|
}
|
|
|
|
if (age) {
|
|
s->expires = time(NULL) + atoi(p + offset);
|
|
}
|
|
}
|
|
|
|
static int process_line(URLContext *h, char *line, int line_count)
|
|
{
|
|
HTTPContext *s = h->priv_data;
|
|
const char *auto_method = h->flags & AVIO_FLAG_READ ? "POST" : "GET";
|
|
char *tag, *p, *end, *method, *resource, *version;
|
|
int ret;
|
|
|
|
/* end of header */
|
|
if (line[0] == '\0') {
|
|
s->end_header = 1;
|
|
return 0;
|
|
}
|
|
|
|
p = line;
|
|
if (line_count == 0) {
|
|
if (s->is_connected_server) {
|
|
// HTTP method
|
|
method = p;
|
|
while (*p && !av_isspace(*p))
|
|
p++;
|
|
*(p++) = '\0';
|
|
av_log(h, AV_LOG_TRACE, "Received method: %s\n", method);
|
|
if (s->method) {
|
|
if (av_strcasecmp(s->method, method)) {
|
|
av_log(h, AV_LOG_ERROR, "Received and expected HTTP method do not match. (%s expected, %s received)\n",
|
|
s->method, method);
|
|
return ff_http_averror(400, AVERROR(EIO));
|
|
}
|
|
} else {
|
|
// use autodetected HTTP method to expect
|
|
av_log(h, AV_LOG_TRACE, "Autodetected %s HTTP method\n", auto_method);
|
|
if (av_strcasecmp(auto_method, method)) {
|
|
av_log(h, AV_LOG_ERROR, "Received and autodetected HTTP method did not match "
|
|
"(%s autodetected %s received)\n", auto_method, method);
|
|
return ff_http_averror(400, AVERROR(EIO));
|
|
}
|
|
if (!(s->method = av_strdup(method)))
|
|
return AVERROR(ENOMEM);
|
|
}
|
|
|
|
// HTTP resource
|
|
while (av_isspace(*p))
|
|
p++;
|
|
resource = p;
|
|
while (*p && !av_isspace(*p))
|
|
p++;
|
|
*(p++) = '\0';
|
|
av_log(h, AV_LOG_TRACE, "Requested resource: %s\n", resource);
|
|
if (!(s->resource = av_strdup(resource)))
|
|
return AVERROR(ENOMEM);
|
|
|
|
// HTTP version
|
|
while (av_isspace(*p))
|
|
p++;
|
|
version = p;
|
|
while (*p && !av_isspace(*p))
|
|
p++;
|
|
*p = '\0';
|
|
if (av_strncasecmp(version, "HTTP/", 5)) {
|
|
av_log(h, AV_LOG_ERROR, "Malformed HTTP version string.\n");
|
|
return ff_http_averror(400, AVERROR(EIO));
|
|
}
|
|
av_log(h, AV_LOG_TRACE, "HTTP version string: %s\n", version);
|
|
} else {
|
|
if (av_strncasecmp(p, "HTTP/1.0", 8) == 0)
|
|
s->willclose = 1;
|
|
while (*p != '/' && *p != '\0')
|
|
p++;
|
|
while (*p == '/')
|
|
p++;
|
|
av_freep(&s->http_version);
|
|
s->http_version = av_strndup(p, 3);
|
|
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;
|
|
} else if (!av_strcasecmp(tag, "Content-Length") &&
|
|
s->filesize == UINT64_MAX) {
|
|
s->filesize = strtoull(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 = UINT64_MAX;
|
|
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_get_token((const char **)&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 = strtoull(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;
|
|
} else if (!av_strcasecmp(tag, "Expires")) {
|
|
parse_expires(s, p);
|
|
} else if (!av_strcasecmp(tag, "Cache-Control")) {
|
|
parse_cache_control(s, p);
|
|
}
|
|
}
|
|
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, and may
|
|
* be NULL if there are no valid 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 *cookie, *set_cookies, *next;
|
|
char *saveptr = NULL;
|
|
|
|
// destroy any cookies in the dictionary.
|
|
av_dict_free(&s->cookie_dict);
|
|
|
|
if (!s->cookies)
|
|
return 0;
|
|
|
|
next = set_cookies = av_strdup(s->cookies);
|
|
if (!next)
|
|
return AVERROR(ENOMEM);
|
|
|
|
*cookies = NULL;
|
|
while ((cookie = av_strtok(next, "\n", &saveptr)) && !ret) {
|
|
AVDictionary *cookie_params = NULL;
|
|
AVDictionaryEntry *cookie_entry, *e;
|
|
|
|
next = 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);
|
|
|
|
// continue on to the next cookie if this one cannot be parsed
|
|
if (parse_set_cookie(cookie, &cookie_params))
|
|
goto skip_cookie;
|
|
|
|
// if the cookie has no value, skip it
|
|
cookie_entry = av_dict_get(cookie_params, "", NULL, AV_DICT_IGNORE_SUFFIX);
|
|
if (!cookie_entry || !cookie_entry->value)
|
|
goto skip_cookie;
|
|
|
|
// if the cookie has expired, don't add it
|
|
if ((e = av_dict_get(cookie_params, "expires", NULL, 0)) && e->value) {
|
|
struct tm tm_buf = {0};
|
|
if (!parse_set_cookie_expiry_time(e->value, &tm_buf)) {
|
|
if (av_timegm(&tm_buf) < av_gettime() / 1000000)
|
|
goto skip_cookie;
|
|
}
|
|
}
|
|
|
|
// if no domain in the cookie assume it appied to this request
|
|
if ((e = av_dict_get(cookie_params, "domain", NULL, 0)) && e->value) {
|
|
// find the offset comparison is on the min domain (b.com, not a.b.com)
|
|
int domain_offset = strlen(domain) - strlen(e->value);
|
|
if (domain_offset < 0)
|
|
goto skip_cookie;
|
|
|
|
// match the cookie domain
|
|
if (av_strcasecmp(&domain[domain_offset], e->value))
|
|
goto skip_cookie;
|
|
}
|
|
|
|
// if a cookie path is provided, ensure the request path is within that path
|
|
e = av_dict_get(cookie_params, "path", NULL, 0);
|
|
if (e && av_strncasecmp(path, e->value, strlen(e->value)))
|
|
goto skip_cookie;
|
|
|
|
// cookie parameters match, so copy the value
|
|
if (!*cookies) {
|
|
*cookies = av_asprintf("%s=%s", cookie_entry->key, cookie_entry->value);
|
|
} else {
|
|
char *tmp = *cookies;
|
|
*cookies = av_asprintf("%s; %s=%s", tmp, cookie_entry->key, cookie_entry->value);
|
|
av_free(tmp);
|
|
}
|
|
if (!*cookies)
|
|
ret = AVERROR(ENOMEM);
|
|
|
|
skip_cookie:
|
|
av_dict_free(&cookie_params);
|
|
}
|
|
|
|
av_free(set_cookies);
|
|
|
|
return ret;
|
|
}
|
|
|
|
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)
|
|
{
|
|
HTTPContext *s = h->priv_data;
|
|
char line[MAX_URL_SIZE];
|
|
int err = 0;
|
|
|
|
av_freep(&s->new_location);
|
|
s->expires = 0;
|
|
s->chunksize = UINT64_MAX;
|
|
s->filesize_from_content_range = UINT64_MAX;
|
|
|
|
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);
|
|
if (err < 0)
|
|
return err;
|
|
if (err == 0)
|
|
break;
|
|
s->line_count++;
|
|
}
|
|
|
|
// filesize from Content-Range can always be used, even if using chunked Transfer-Encoding
|
|
if (s->filesize_from_content_range != UINT64_MAX)
|
|
s->filesize = s->filesize_from_content_range;
|
|
|
|
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;
|
|
}
|
|
|
|
/**
|
|
* Escape unsafe characters in path in order to pass them safely to the HTTP
|
|
* request. Insipred by the algorithm in GNU wget:
|
|
* - escape "%" characters not followed by two hex digits
|
|
* - escape all "unsafe" characters except which are also "reserved"
|
|
* - pass through everything else
|
|
*/
|
|
static void bprint_escaped_path(AVBPrint *bp, const char *path)
|
|
{
|
|
#define NEEDS_ESCAPE(ch) \
|
|
((ch) <= ' ' || (ch) >= '\x7f' || \
|
|
(ch) == '"' || (ch) == '%' || (ch) == '<' || (ch) == '>' || (ch) == '\\' || \
|
|
(ch) == '^' || (ch) == '`' || (ch) == '{' || (ch) == '}' || (ch) == '|')
|
|
while (*path) {
|
|
char buf[1024];
|
|
char *q = buf;
|
|
while (*path && q - buf < sizeof(buf) - 4) {
|
|
if (path[0] == '%' && av_isxdigit(path[1]) && av_isxdigit(path[2])) {
|
|
*q++ = *path++;
|
|
*q++ = *path++;
|
|
*q++ = *path++;
|
|
} else if (NEEDS_ESCAPE(*path)) {
|
|
q += snprintf(q, 4, "%%%02X", (uint8_t)*path++);
|
|
} else {
|
|
*q++ = *path++;
|
|
}
|
|
}
|
|
av_bprint_append_data(bp, buf, q - buf);
|
|
}
|
|
}
|
|
|
|
static int http_connect(URLContext *h, const char *path, const char *local_path,
|
|
const char *hoststr, const char *auth,
|
|
const char *proxyauth)
|
|
{
|
|
HTTPContext *s = h->priv_data;
|
|
int post, err;
|
|
AVBPrint request;
|
|
char *authstr = NULL, *proxyauthstr = NULL;
|
|
uint64_t off = s->off;
|
|
const char *method;
|
|
int send_expect_100 = 0;
|
|
|
|
av_bprint_init_for_buffer(&request, s->buffer, sizeof(s->buffer));
|
|
|
|
/* 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) {
|
|
if (s->send_expect_100 != -1) {
|
|
send_expect_100 = s->send_expect_100;
|
|
} else {
|
|
send_expect_100 = 0;
|
|
/* 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;
|
|
}
|
|
}
|
|
|
|
av_bprintf(&request, "%s ", method);
|
|
bprint_escaped_path(&request, path);
|
|
av_bprintf(&request, " HTTP/1.1\r\n");
|
|
|
|
if (post && s->chunked_post)
|
|
av_bprintf(&request, "Transfer-Encoding: chunked\r\n");
|
|
/* set default headers if needed */
|
|
if (!has_header(s->headers, "\r\nUser-Agent: "))
|
|
av_bprintf(&request, "User-Agent: %s\r\n", s->user_agent);
|
|
if (s->referer) {
|
|
/* set default headers if needed */
|
|
if (!has_header(s->headers, "\r\nReferer: "))
|
|
av_bprintf(&request, "Referer: %s\r\n", s->referer);
|
|
}
|
|
if (!has_header(s->headers, "\r\nAccept: "))
|
|
av_bprintf(&request, "Accept: */*\r\n");
|
|
// Note: we send the Range header on purpose, even 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 != 0)) {
|
|
av_bprintf(&request, "Range: bytes=%"PRIu64"-", s->off);
|
|
if (s->end_off)
|
|
av_bprintf(&request, "%"PRId64, s->end_off - 1);
|
|
av_bprintf(&request, "\r\n");
|
|
}
|
|
if (send_expect_100 && !has_header(s->headers, "\r\nExpect: "))
|
|
av_bprintf(&request, "Expect: 100-continue\r\n");
|
|
|
|
if (!has_header(s->headers, "\r\nConnection: "))
|
|
av_bprintf(&request, "Connection: %s\r\n", s->multiple_requests ? "keep-alive" : "close");
|
|
|
|
if (!has_header(s->headers, "\r\nHost: "))
|
|
av_bprintf(&request, "Host: %s\r\n", hoststr);
|
|
if (!has_header(s->headers, "\r\nContent-Length: ") && s->post_data)
|
|
av_bprintf(&request, "Content-Length: %d\r\n", s->post_datalen);
|
|
|
|
if (!has_header(s->headers, "\r\nContent-Type: ") && s->content_type)
|
|
av_bprintf(&request, "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) {
|
|
av_bprintf(&request, "Cookie: %s\r\n", cookies);
|
|
av_free(cookies);
|
|
}
|
|
}
|
|
if (!has_header(s->headers, "\r\nIcy-MetaData: ") && s->icy)
|
|
av_bprintf(&request, "Icy-MetaData: 1\r\n");
|
|
|
|
/* now add in custom headers */
|
|
if (s->headers)
|
|
av_bprintf(&request, "%s", s->headers);
|
|
|
|
if (authstr)
|
|
av_bprintf(&request, "%s", authstr);
|
|
if (proxyauthstr)
|
|
av_bprintf(&request, "Proxy-%s", proxyauthstr);
|
|
av_bprintf(&request, "\r\n");
|
|
|
|
av_log(h, AV_LOG_DEBUG, "request: %s\n", request.str);
|
|
|
|
if (!av_bprint_is_complete(&request)) {
|
|
av_log(h, AV_LOG_ERROR, "overlong headers\n");
|
|
err = AVERROR(EINVAL);
|
|
goto done;
|
|
}
|
|
|
|
if ((err = ffurl_write(s->hd, request.str, request.len)) < 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 = UINT64_MAX;
|
|
s->willclose = 0;
|
|
s->end_chunked_post = 0;
|
|
s->end_header = 0;
|
|
#if CONFIG_ZLIB
|
|
s->compressed = 0;
|
|
#endif
|
|
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);
|
|
if (err < 0)
|
|
goto done;
|
|
|
|
if (s->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;
|
|
|
|
if (s->chunksize != UINT64_MAX) {
|
|
if (s->chunkend) {
|
|
return AVERROR_EOF;
|
|
}
|
|
if (!s->chunksize) {
|
|
char line[32];
|
|
int err;
|
|
|
|
do {
|
|
if ((err = http_get_line(s, line, sizeof(line))) < 0)
|
|
return err;
|
|
} while (!*line); /* skip CR LF from last chunk */
|
|
|
|
s->chunksize = strtoull(line, NULL, 16);
|
|
|
|
av_log(h, AV_LOG_TRACE,
|
|
"Chunked encoding data size: %"PRIu64"\n",
|
|
s->chunksize);
|
|
|
|
if (!s->chunksize && s->multiple_requests) {
|
|
http_get_line(s, line, sizeof(line)); // read empty chunk
|
|
s->chunkend = 1;
|
|
return 0;
|
|
}
|
|
else if (!s->chunksize) {
|
|
av_log(h, AV_LOG_DEBUG, "Last chunk received, closing conn\n");
|
|
ffurl_closep(&s->hd);
|
|
return 0;
|
|
}
|
|
else if (s->chunksize == UINT64_MAX) {
|
|
av_log(h, AV_LOG_ERROR, "Invalid chunk size %"PRIu64"\n",
|
|
s->chunksize);
|
|
return AVERROR(EINVAL);
|
|
}
|
|
}
|
|
size = FFMIN(size, s->chunksize);
|
|
}
|
|
|
|
/* 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 {
|
|
uint64_t target_end = s->end_off ? s->end_off : s->filesize;
|
|
if ((!s->willclose || s->chunksize == UINT64_MAX) && s->off >= target_end)
|
|
return AVERROR_EOF;
|
|
len = ffurl_read(s->hd, buf, size);
|
|
if ((!len || len == AVERROR_EOF) &&
|
|
(!s->willclose || s->chunksize == UINT64_MAX) && s->off < target_end) {
|
|
av_log(h, AV_LOG_ERROR,
|
|
"Stream ends prematurely at %"PRIu64", should be %"PRIu64"\n",
|
|
s->off, target_end
|
|
);
|
|
return AVERROR(EIO);
|
|
}
|
|
}
|
|
if (len > 0) {
|
|
s->off += len;
|
|
if (s->chunksize > 0 && s->chunksize != UINT64_MAX) {
|
|
av_assert0(s->chunksize >= len);
|
|
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, read_ret;
|
|
int64_t seek_ret;
|
|
int reconnect_delay = 0;
|
|
|
|
if (!s->hd)
|
|
return AVERROR_EOF;
|
|
|
|
if (s->end_chunked_post && !s->end_header) {
|
|
err = http_read_header(h);
|
|
if (err < 0)
|
|
return err;
|
|
}
|
|
|
|
#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);
|
|
while (read_ret < 0) {
|
|
uint64_t target = h->is_streamed ? 0 : s->off;
|
|
|
|
if (read_ret == AVERROR_EXIT)
|
|
break;
|
|
|
|
if (h->is_streamed && !s->reconnect_streamed)
|
|
break;
|
|
|
|
if (!(s->reconnect && s->filesize > 0 && s->off < s->filesize) &&
|
|
!(s->reconnect_at_eof && read_ret == AVERROR_EOF))
|
|
break;
|
|
|
|
if (reconnect_delay > s->reconnect_delay_max)
|
|
return AVERROR(EIO);
|
|
|
|
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));
|
|
err = ff_network_sleep_interruptible(1000U*1000*reconnect_delay, &h->interrupt_callback);
|
|
if (err != AVERROR(ETIMEDOUT))
|
|
return err;
|
|
reconnect_delay = 1 + 2*reconnect_delay;
|
|
seek_ret = http_seek_internal(h, target, SEEK_SET, 1);
|
|
if (seek_ret >= 0 && seek_ret != target) {
|
|
av_log(h, AV_LOG_ERROR, "Failed to reconnect at %"PRIu64".\n", target);
|
|
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(URLContext *h, char *data)
|
|
{
|
|
char *key;
|
|
char *val;
|
|
char *end;
|
|
char *next = data;
|
|
HTTPContext *s = h->priv_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);
|
|
av_log(h, AV_LOG_VERBOSE, "Metadata update for %s: %s\n", key, val);
|
|
|
|
next = end + 2;
|
|
}
|
|
}
|
|
|
|
static int store_icy(URLContext *h, int size)
|
|
{
|
|
HTTPContext *s = h->priv_data;
|
|
/* until next metadata packet */
|
|
uint64_t remaining;
|
|
|
|
if (s->icy_metaint < s->icy_data_read)
|
|
return AVERROR_INVALIDDATA;
|
|
remaining = s->icy_metaint - s->icy_data_read;
|
|
|
|
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(h, 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) ||
|
|
((flags & AVIO_FLAG_READ) && s->chunked_post && s->listen)) {
|
|
ret = ffurl_write(s->hd, footer, sizeof(footer) - 1);
|
|
ret = ret > 0 ? 0 : ret;
|
|
/* flush the receive buffer when it is write only mode */
|
|
if (!(flags & AVIO_FLAG_READ)) {
|
|
char buf[1024];
|
|
int read_ret;
|
|
s->hd->flags |= AVIO_FLAG_NONBLOCK;
|
|
read_ret = ffurl_read(s->hd, buf, sizeof(buf));
|
|
s->hd->flags &= ~AVIO_FLAG_NONBLOCK;
|
|
if (read_ret < 0 && read_ret != AVERROR(EAGAIN)) {
|
|
av_log(h, AV_LOG_ERROR, "URL read error: %s\n", av_err2str(read_ret));
|
|
ret = read_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->hd && !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);
|
|
av_dict_free(&s->cookie_dict);
|
|
av_dict_free(&s->redirect_cache);
|
|
av_freep(&s->new_location);
|
|
av_freep(&s->uri);
|
|
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;
|
|
uint64_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 == UINT64_MAX && whence == SEEK_END))
|
|
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;
|
|
|
|
if (s->off && h->is_streamed)
|
|
return AVERROR(ENOSYS);
|
|
|
|
/* do not try to make a new connection if seeking past the end of the file */
|
|
if (s->end_off || s->filesize != UINT64_MAX) {
|
|
uint64_t end_pos = s->end_off ? s->end_off : s->filesize;
|
|
if (s->off >= end_pos)
|
|
return s->off;
|
|
}
|
|
|
|
/* if the location changed (redirect), revert to the original uri */
|
|
if (strcmp(s->uri, s->location)) {
|
|
char *new_uri;
|
|
new_uri = av_strdup(s->uri);
|
|
if (!new_uri)
|
|
return AVERROR(ENOMEM);
|
|
av_free(s->location);
|
|
s->location = new_uri;
|
|
}
|
|
|
|
/* 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);
|
|
}
|
|
|
|
static int http_get_short_seek(URLContext *h)
|
|
{
|
|
HTTPContext *s = h->priv_data;
|
|
if (s->short_seek_size >= 1)
|
|
return s->short_seek_size;
|
|
return ffurl_get_short_seek(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);
|
|
|
|
const URLProtocol ff_http_protocol = {
|
|
.name = "http",
|
|
.url_open2 = http_open,
|
|
.url_accept = http_accept,
|
|
.url_handshake = http_handshake,
|
|
.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_get_short_seek = http_get_short_seek,
|
|
.url_shutdown = http_shutdown,
|
|
.priv_data_size = sizeof(HTTPContext),
|
|
.priv_data_class = &http_context_class,
|
|
.flags = URL_PROTOCOL_FLAG_NETWORK,
|
|
.default_whitelist = "http,https,tls,rtp,tcp,udp,crypto,httpproxy,data"
|
|
};
|
|
#endif /* CONFIG_HTTP_PROTOCOL */
|
|
|
|
#if CONFIG_HTTPS_PROTOCOL
|
|
HTTP_CLASS(https);
|
|
|
|
const 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_get_short_seek = http_get_short_seek,
|
|
.url_shutdown = http_shutdown,
|
|
.priv_data_size = sizeof(HTTPContext),
|
|
.priv_data_class = &https_context_class,
|
|
.flags = URL_PROTOCOL_FLAG_NETWORK,
|
|
.default_whitelist = "http,https,tls,rtp,tcp,udp,crypto,httpproxy"
|
|
};
|
|
#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;
|
|
|
|
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_whitelist(&s->hd, lower_url, AVIO_FLAG_READ_WRITE,
|
|
&h->interrupt_callback, NULL,
|
|
h->protocol_whitelist, h->protocol_blacklist, h);
|
|
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 = UINT64_MAX;
|
|
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);
|
|
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);
|
|
}
|
|
|
|
const 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 */
|