mirror of https://git.ffmpeg.org/ffmpeg.git
1075 lines
36 KiB
C
1075 lines
36 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 "libavutil/avstring.h"
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#include "avformat.h"
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#include "internal.h"
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#include "network.h"
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#include "http.h"
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#include "os_support.h"
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#include "httpauth.h"
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#include "url.h"
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#include "libavutil/opt.h"
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#if CONFIG_ZLIB
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#include <zlib.h>
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#endif
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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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*/
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#define BUFFER_SIZE MAX_URL_SIZE
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#define MAX_REDIRECTS 8
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typedef struct {
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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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int64_t chunksize; /**< Used if "Transfer-Encoding: chunked" otherwise -1. */
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char *content_type;
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char *user_agent;
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int64_t off, filesize;
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int icy_data_read; ///< how much data was read since last ICY metadata packet
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int icy_metaint; ///< after how many bytes of read data a new metadata packet will be found
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char location[MAX_URL_SIZE];
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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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int willclose; /**< Set if the server correctly handles Connection: close and will close the connection after feeding us the content. */
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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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int end_chunked_post; /**< A flag which indicates if the end of chunked encoding has been sent. */
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int end_header; /**< A flag which indicates we have finished to read POST reply. */
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int multiple_requests; /**< A flag which indicates if we use persistent connections. */
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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 rw_timeout;
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char *mime_type;
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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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int icy;
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char *icy_metadata_headers;
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char *icy_metadata_packet;
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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
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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", "force a content type", 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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{"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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{"timeout", "set timeout of socket I/O operations", OFFSET(rw_timeout), AV_OPT_TYPE_INT, {.i64 = -1}, -1, INT_MAX, D|E },
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{"mime_type", "set MIME type", OFFSET(mime_type), AV_OPT_TYPE_STRING, {0}, 0, 0, 0 },
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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, 0 },
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{"icy", "request ICY metadata", OFFSET(icy), AV_OPT_TYPE_INT, {.i64 = 0}, 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, 0 },
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{"icy_metadata_packet", "return current ICY metadata packet", OFFSET(icy_metadata_packet), AV_OPT_TYPE_STRING, {0}, 0, 0, 0 },
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{NULL}
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};
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#define HTTP_CLASS(flavor)\
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static const AVClass flavor ## _context_class = {\
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.class_name = #flavor,\
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.item_name = av_default_item_name,\
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.option = options,\
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.version = LIBAVUTIL_VERSION_INT,\
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}
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HTTP_CLASS(http);
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HTTP_CLASS(https);
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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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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, 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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/* return non zero if error */
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static int http_open_cnx(URLContext *h)
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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, redirects = 0, attempts = 0;
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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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/* fill the dest addr */
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redo:
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/* needed in any case to build the host string */
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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 != NULL && 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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AVDictionary *opts = NULL;
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char opts_format[20];
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if (s->rw_timeout != -1) {
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snprintf(opts_format, sizeof(opts_format), "%d", s->rw_timeout);
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av_dict_set(&opts, "timeout", opts_format, 0);
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} /* if option is not given, don't pass it and let tcp use its own default */
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err = ffurl_open(&s->hd, buf, AVIO_FLAG_READ_WRITE,
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&h->interrupt_callback, &opts);
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av_dict_free(&opts);
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if (err < 0)
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goto fail;
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}
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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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if (http_connect(h, path, local_path, hoststr, auth, proxyauth, &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 || 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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return 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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s->off = 0;
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s->icy_data_read = 0;
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av_strlcpy(s->location, uri, sizeof(s->location));
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return http_open_cnx(h);
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}
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static int http_open(URLContext *h, const char *uri, int flags)
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{
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HTTPContext *s = h->priv_data;
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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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s->filesize = -1;
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av_strlcpy(s->location, uri, sizeof(s->location));
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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, "No trailing CRLF found in HTTP header.\n");
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}
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return http_open_cnx(h);
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}
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static int http_getc(HTTPContext *s)
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{
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int len;
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if (s->buf_ptr >= s->buf_end) {
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len = ffurl_read(s->hd, s->buffer, BUFFER_SIZE);
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if (len < 0) {
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return len;
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} else if (len == 0) {
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return -1;
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} else {
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s->buf_ptr = s->buffer;
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s->buf_end = s->buffer + len;
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}
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}
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return *s->buf_ptr++;
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}
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static int http_get_line(HTTPContext *s, char *line, int line_size)
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{
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int ch;
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char *q;
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q = line;
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for(;;) {
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ch = http_getc(s);
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if (ch < 0)
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return ch;
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if (ch == '\n') {
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/* process line */
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if (q > line && q[-1] == '\r')
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q--;
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*q = '\0';
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return 0;
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} else {
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if ((q - line) < line_size - 1)
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*q++ = ch;
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}
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}
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}
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static int process_line(URLContext *h, char *line, int line_count,
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int *new_location)
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{
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HTTPContext *s = h->priv_data;
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char *tag, *p, *end;
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char redirected_location[MAX_URL_SIZE];
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/* end of header */
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if (line[0] == '\0') {
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s->end_header = 1;
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return 0;
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}
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p = line;
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if (line_count == 0) {
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while (!av_isspace(*p) && *p != '\0')
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p++;
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while (av_isspace(*p))
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p++;
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s->http_code = strtol(p, &end, 10);
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av_dlog(NULL, "http_code=%d\n", s->http_code);
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/* error codes are 4xx and 5xx, but regard 401 as a success, so we
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* don't abort until all headers have been parsed. */
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if (s->http_code >= 400 && s->http_code < 600 && (s->http_code != 401
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|| s->auth_state.auth_type != HTTP_AUTH_NONE) &&
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(s->http_code != 407 || s->proxy_auth_state.auth_type != HTTP_AUTH_NONE)) {
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end += strspn(end, SPACE_CHARS);
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av_log(h, AV_LOG_WARNING, "HTTP error %d %s\n",
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s->http_code, end);
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return -1;
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}
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} else {
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while (*p != '\0' && *p != ':')
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p++;
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if (*p != ':')
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return 1;
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*p = '\0';
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tag = line;
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p++;
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while (av_isspace(*p))
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p++;
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if (!av_strcasecmp(tag, "Location")) {
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ff_make_absolute_url(redirected_location, sizeof(redirected_location), s->location, p);
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av_strlcpy(s->location, redirected_location, sizeof(s->location));
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*new_location = 1;
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} else if (!av_strcasecmp (tag, "Content-Length") && s->filesize == -1) {
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s->filesize = strtoll(p, NULL, 10);
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} else if (!av_strcasecmp (tag, "Content-Range")) {
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/* "bytes $from-$to/$document_size" */
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const char *slash;
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if (!strncmp (p, "bytes ", 6)) {
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p += 6;
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s->off = strtoll(p, NULL, 10);
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if ((slash = strchr(p, '/')) && strlen(slash) > 0)
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s->filesize = strtoll(slash+1, NULL, 10);
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}
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if (s->seekable == -1 && (!s->is_akamai || s->filesize != 2147483647))
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h->is_streamed = 0; /* we _can_ in fact seek */
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} else if (!av_strcasecmp(tag, "Accept-Ranges") && !strncmp(p, "bytes", 5) && s->seekable == -1) {
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h->is_streamed = 0;
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} else if (!av_strcasecmp (tag, "Transfer-Encoding") && !av_strncasecmp(p, "chunked", 7)) {
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s->filesize = -1;
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s->chunksize = 0;
|
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} else if (!av_strcasecmp (tag, "WWW-Authenticate")) {
|
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ff_http_auth_handle_header(&s->auth_state, tag, p);
|
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} else if (!av_strcasecmp (tag, "Authentication-Info")) {
|
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ff_http_auth_handle_header(&s->auth_state, tag, p);
|
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} else if (!av_strcasecmp (tag, "Proxy-Authenticate")) {
|
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ff_http_auth_handle_header(&s->proxy_auth_state, tag, p);
|
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} else if (!av_strcasecmp (tag, "Connection")) {
|
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if (!strcmp(p, "close"))
|
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s->willclose = 1;
|
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} else if (!av_strcasecmp (tag, "Server") && !av_strcasecmp (p, "AkamaiGHost")) {
|
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s->is_akamai = 1;
|
|
} else if (!av_strcasecmp (tag, "Content-Type")) {
|
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av_free(s->mime_type); s->mime_type = av_strdup(p);
|
|
} else if (!av_strcasecmp (tag, "Set-Cookie")) {
|
|
if (!s->cookies) {
|
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if (!(s->cookies = av_strdup(p)))
|
|
return AVERROR(ENOMEM);
|
|
} else {
|
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char *tmp = s->cookies;
|
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size_t str_size = strlen(tmp) + strlen(p) + 2;
|
|
if (!(s->cookies = av_malloc(str_size))) {
|
|
s->cookies = tmp;
|
|
return AVERROR(ENOMEM);
|
|
}
|
|
snprintf(s->cookies, str_size, "%s\n%s", tmp, p);
|
|
av_free(tmp);
|
|
}
|
|
} else if (!av_strcasecmp (tag, "Icy-MetaInt")) {
|
|
s->icy_metaint = strtoll(p, NULL, 10);
|
|
} else if (!av_strncasecmp(tag, "Icy-", 4)) {
|
|
// Concat all Icy- header lines
|
|
char *buf = av_asprintf("%s%s: %s\n",
|
|
s->icy_metadata_headers ? s->icy_metadata_headers : "", tag, p);
|
|
if (!buf)
|
|
return AVERROR(ENOMEM);
|
|
av_freep(&s->icy_metadata_headers);
|
|
s->icy_metadata_headers = buf;
|
|
} else if (!av_strcasecmp (tag, "Content-Encoding")) {
|
|
if (!av_strncasecmp(p, "gzip", 4) || !av_strncasecmp(p, "deflate", 7)) {
|
|
#if CONFIG_ZLIB
|
|
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
|
|
} 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 AVERROR(ENOSYS);
|
|
}
|
|
}
|
|
}
|
|
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);
|
|
|
|
*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;
|
|
|
|
while ((param = av_strtok(cookie, "; ", &next_param))) {
|
|
cookie = NULL;
|
|
if (!av_strncasecmp("path=", param, 5)) {
|
|
av_free(cpath);
|
|
cpath = av_strdup(¶m[5]);
|
|
} else if (!av_strncasecmp("domain=", param, 7)) {
|
|
av_free(cdomain);
|
|
cdomain = av_strdup(¶m[7]);
|
|
} else if (!av_strncasecmp("secure", param, 6) ||
|
|
!av_strncasecmp("comment", param, 7) ||
|
|
!av_strncasecmp("max-age", param, 7) ||
|
|
!av_strncasecmp("version", param, 7)) {
|
|
// ignore Comment, Max-Age, Secure and Version
|
|
} else {
|
|
av_free(cvalue);
|
|
cvalue = av_strdup(param);
|
|
}
|
|
}
|
|
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_free(cdomain);
|
|
av_free(cpath);
|
|
av_free(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_dlog(NULL, "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++;
|
|
}
|
|
|
|
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[4096] = "";
|
|
char *authstr = NULL, *proxyauthstr = NULL;
|
|
int64_t off = s->off;
|
|
int len = 0;
|
|
const char *method;
|
|
|
|
|
|
/* 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;
|
|
}
|
|
|
|
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);
|
|
|
|
/* 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->seekable == -1))
|
|
len += av_strlcatf(headers + len, sizeof(headers) - len,
|
|
"Range: bytes=%"PRId64"-\r\n", s->off);
|
|
|
|
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)) {
|
|
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_freep(&authstr);
|
|
av_freep(&proxyauthstr);
|
|
if ((err = ffurl_write(s->hd, s->buffer, strlen(s->buffer))) < 0)
|
|
return err;
|
|
|
|
if (s->post_data)
|
|
if ((err = ffurl_write(s->hd, s->post_data, s->post_datalen)) < 0)
|
|
return err;
|
|
|
|
/* 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) {
|
|
/* 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;
|
|
return 0;
|
|
}
|
|
|
|
/* wait for header */
|
|
err = http_read_header(h, new_location);
|
|
if (err < 0)
|
|
return err;
|
|
|
|
return (off == s->off) ? 0 : -1;
|
|
}
|
|
|
|
|
|
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->filesize >= 0 && s->off >= s->filesize)
|
|
return AVERROR_EOF;
|
|
len = ffurl_read(s->hd, buf, size);
|
|
}
|
|
if (len > 0) {
|
|
s->off += len;
|
|
s->icy_data_read += 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
|
|
|
|
static int http_read(URLContext *h, uint8_t *buf, int size)
|
|
{
|
|
HTTPContext *s = h->priv_data;
|
|
int err, new_location;
|
|
|
|
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];
|
|
|
|
for(;;) {
|
|
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_dlog(NULL, "Chunked encoding data size: %"PRId64"'\n", s->chunksize);
|
|
|
|
if (!s->chunksize)
|
|
return 0;
|
|
break;
|
|
}
|
|
}
|
|
size = FFMIN(size, s->chunksize);
|
|
}
|
|
if (s->icy_metaint > 0) {
|
|
int remaining = s->icy_metaint - s->icy_data_read; /* until next metadata packet */
|
|
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 follow.
|
|
int ch = http_getc(s);
|
|
if (ch < 0)
|
|
return ch;
|
|
if (ch > 0) {
|
|
char data[255 * 16 + 1];
|
|
int n;
|
|
int ret;
|
|
ch *= 16;
|
|
for (n = 0; n < ch; n++)
|
|
data[n] = http_getc(s);
|
|
data[ch + 1] = 0;
|
|
if ((ret = av_opt_set(s, "icy_metadata_packet", data, 0)) < 0)
|
|
return ret;
|
|
}
|
|
s->icy_data_read = 0;
|
|
remaining = s->icy_metaint;
|
|
}
|
|
size = FFMIN(size, remaining);
|
|
}
|
|
#if CONFIG_ZLIB
|
|
if (s->compressed)
|
|
return http_buf_read_compressed(h, buf, size);
|
|
#endif
|
|
return http_buf_read(h, buf, 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
|
|
|
|
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);
|
|
return ret;
|
|
}
|
|
|
|
static int64_t http_seek(URLContext *h, int64_t off, int whence)
|
|
{
|
|
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;
|
|
|
|
if (whence == AVSEEK_SIZE)
|
|
return s->filesize;
|
|
else if ((s->filesize == -1 && whence == SEEK_END) || h->is_streamed)
|
|
return -1;
|
|
|
|
/* 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 (whence == SEEK_CUR)
|
|
off += s->off;
|
|
else if (whence == SEEK_END)
|
|
off += s->filesize;
|
|
s->off = off;
|
|
|
|
/* if it fails, continue on old connection */
|
|
if (http_open_cnx(h) < 0) {
|
|
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 -1;
|
|
}
|
|
ffurl_close(old_hd);
|
|
return off;
|
|
}
|
|
|
|
static int
|
|
http_get_file_handle(URLContext *h)
|
|
{
|
|
HTTPContext *s = h->priv_data;
|
|
return ffurl_get_file_handle(s->hd);
|
|
}
|
|
|
|
#if CONFIG_HTTP_PROTOCOL
|
|
URLProtocol ff_http_protocol = {
|
|
.name = "http",
|
|
.url_open = 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
|
|
#if CONFIG_HTTPS_PROTOCOL
|
|
URLProtocol ff_https_protocol = {
|
|
.name = "https",
|
|
.url_open = 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
|
|
|
|
#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;
|
|
AVDictionary *opts = NULL;
|
|
char opts_format[20];
|
|
|
|
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:
|
|
if (s->rw_timeout != -1) {
|
|
snprintf(opts_format, sizeof(opts_format), "%d", s->rw_timeout);
|
|
av_dict_set(&opts, "timeout", opts_format, 0);
|
|
} /* if option is not given, don't pass it and let tcp use its own default */
|
|
ret = ffurl_open(&s->hd, lower_url, AVIO_FLAG_READ_WRITE,
|
|
&h->interrupt_callback, &opts);
|
|
av_dict_free(&opts);
|
|
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 = 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
|