2001-07-22 16:18:56 +02:00
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/*
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* HTTP protocol for ffmpeg client
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2002-05-26 00:34:32 +02:00
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* Copyright (c) 2000, 2001 Fabrice Bellard.
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2001-07-22 16:18:56 +02:00
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*
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2006-10-07 17:30:46 +02:00
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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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2002-05-26 00:34:32 +02:00
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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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2006-10-07 17:30:46 +02:00
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* version 2.1 of the License, or (at your option) any later version.
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2001-07-22 16:18:56 +02:00
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*
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2006-10-07 17:30:46 +02:00
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* FFmpeg is distributed in the hope that it will be useful,
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2001-07-22 16:18:56 +02:00
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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2002-05-26 00:34:32 +02:00
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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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2001-07-22 16:18:56 +02:00
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*
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2002-05-26 00:34:32 +02:00
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* You should have received a copy of the GNU Lesser General Public
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2006-10-07 17:30:46 +02:00
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* License along with FFmpeg; if not, write to the Free Software
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2006-01-12 23:43:26 +01:00
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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2001-07-22 16:18:56 +02:00
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*/
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2001-08-13 23:37:10 +02:00
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#include "avformat.h"
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2001-07-22 16:18:56 +02:00
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#include <unistd.h>
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#include <sys/types.h>
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2002-11-10 12:46:59 +01:00
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#include <sys/socket.h>
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2001-07-22 16:18:56 +02:00
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#include <netinet/in.h>
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2002-11-02 11:35:07 +01:00
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#ifndef __BEOS__
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# include <arpa/inet.h>
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#else
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# include "barpainet.h"
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#endif
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2001-07-22 16:18:56 +02:00
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#include <netdb.h>
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|
2006-10-29 12:53:07 +01:00
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#include "base64.h"
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2001-07-22 16:18:56 +02:00
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/* XXX: POST protocol is not completly implemented because ffmpeg use
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only a subset of it */
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//#define DEBUG
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/* used for protocol handling */
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#define BUFFER_SIZE 1024
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#define URL_SIZE 4096
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2007-01-14 23:02:38 +01:00
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#define MAX_REDIRECTS 8
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2001-07-22 16:18:56 +02:00
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typedef struct {
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2002-07-24 19:53:23 +02:00
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URLContext *hd;
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2001-07-22 16:18:56 +02:00
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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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2007-01-14 23:02:38 +01:00
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offset_t off, filesize;
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2001-07-22 16:18:56 +02:00
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char location[URL_SIZE];
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} HTTPContext;
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|
2004-08-12 02:09:32 +02:00
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static int http_connect(URLContext *h, const char *path, const char *hoststr,
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2007-01-14 23:02:38 +01:00
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const char *auth, int *new_location);
|
2003-02-11 17:35:48 +01:00
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static int http_write(URLContext *h, uint8_t *buf, int size);
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2001-07-22 16:18:56 +02:00
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2002-07-24 19:53:23 +02:00
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2001-07-22 16:18:56 +02:00
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/* return non zero if error */
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2007-01-14 23:02:38 +01:00
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static int http_open_cnx(URLContext *h)
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2001-07-22 16:18:56 +02:00
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{
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2002-07-24 19:53:23 +02:00
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const char *path, *proxy_path;
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char hostname[1024], hoststr[1024];
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2004-08-12 02:09:32 +02:00
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char auth[1024];
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2002-07-24 19:53:23 +02:00
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char path1[1024];
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char buf[1024];
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2007-01-14 23:02:38 +01:00
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int port, use_proxy, err, location_changed = 0, redirects = 0;
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HTTPContext *s = h->priv_data;
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2002-07-24 19:53:23 +02:00
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URLContext *hd = NULL;
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2001-07-22 16:18:56 +02:00
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proxy_path = getenv("http_proxy");
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2005-12-17 19:14:38 +01:00
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use_proxy = (proxy_path != NULL) && !getenv("no_proxy") &&
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2002-07-24 19:53:23 +02:00
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strstart(proxy_path, "http://", NULL);
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2001-07-22 16:18:56 +02:00
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/* fill the dest addr */
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redo:
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2002-07-24 19:53:23 +02:00
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/* needed in any case to build the host string */
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2005-12-17 19:14:38 +01:00
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url_split(NULL, 0, auth, sizeof(auth), hostname, sizeof(hostname), &port,
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2007-01-14 23:02:38 +01:00
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path1, sizeof(path1), s->location);
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2002-07-24 19:53:23 +02:00
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if (port > 0) {
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snprintf(hoststr, sizeof(hoststr), "%s:%d", hostname, port);
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2001-07-22 16:18:56 +02:00
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} else {
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2002-07-24 19:53:23 +02:00
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pstrcpy(hoststr, sizeof(hoststr), hostname);
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2001-07-22 16:18:56 +02:00
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}
|
2002-07-24 19:53:23 +02:00
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2001-07-22 16:18:56 +02:00
|
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if (use_proxy) {
|
2005-12-17 19:14:38 +01:00
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url_split(NULL, 0, auth, sizeof(auth), hostname, sizeof(hostname), &port,
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2002-07-24 19:53:23 +02:00
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NULL, 0, proxy_path);
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2007-01-14 23:02:38 +01:00
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path = s->location;
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2001-07-22 16:18:56 +02:00
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} else {
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2002-07-24 19:53:23 +02:00
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if (path1[0] == '\0')
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2001-07-22 16:18:56 +02:00
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path = "/";
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else
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2002-07-24 19:53:23 +02:00
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path = path1;
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2001-07-22 16:18:56 +02:00
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}
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2002-07-24 19:53:23 +02:00
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if (port < 0)
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port = 80;
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2001-07-22 16:18:56 +02:00
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2002-07-24 19:53:23 +02:00
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snprintf(buf, sizeof(buf), "tcp://%s:%d", hostname, port);
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err = url_open(&hd, buf, URL_RDWR);
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if (err < 0)
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2001-07-22 16:18:56 +02:00
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goto fail;
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2002-07-24 19:53:23 +02:00
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s->hd = hd;
|
2007-01-14 23:02:38 +01:00
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if (http_connect(h, path, hoststr, auth, &location_changed) < 0)
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2001-07-22 16:18:56 +02:00
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goto fail;
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2007-01-14 23:02:38 +01:00
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if (s->http_code == 303 && location_changed == 1) {
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2001-07-22 16:18:56 +02:00
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/* url moved, get next */
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2002-07-24 19:53:23 +02:00
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url_close(hd);
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2007-01-14 23:02:38 +01:00
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if (redirects++ >= MAX_REDIRECTS)
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return AVERROR_IO;
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location_changed = 0;
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2001-07-22 16:18:56 +02:00
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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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2002-07-24 19:53:23 +02:00
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if (hd)
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url_close(hd);
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2004-06-19 05:59:34 +02:00
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return AVERROR_IO;
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2001-07-22 16:18:56 +02:00
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}
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2007-01-14 23:02:38 +01:00
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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;
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int ret;
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h->is_streamed = 1;
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s = av_malloc(sizeof(HTTPContext));
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if (!s) {
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return -ENOMEM;
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}
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h->priv_data = s;
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s->filesize = -1;
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s->off = 0;
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pstrcpy (s->location, URL_SIZE, uri);
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ret = http_open_cnx(h);
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if (ret != 0)
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av_free (s);
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return ret;
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}
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2001-07-22 16:18:56 +02:00
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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) {
|
2002-07-24 19:53:23 +02:00
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len = url_read(s->hd, s->buffer, BUFFER_SIZE);
|
2001-07-22 16:18:56 +02:00
|
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if (len < 0) {
|
2004-06-19 05:59:34 +02:00
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return AVERROR_IO;
|
2001-07-22 16:18:56 +02:00
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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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}
|
|
|
|
|
2007-01-14 23:02:38 +01:00
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static int process_line(URLContext *h, char *line, int line_count,
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int *new_location)
|
2001-07-22 16:18:56 +02:00
|
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|
{
|
2007-01-14 23:02:38 +01:00
|
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HTTPContext *s = h->priv_data;
|
2001-07-22 16:18:56 +02:00
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|
char *tag, *p;
|
2005-12-17 19:14:38 +01:00
|
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|
2001-07-22 16:18:56 +02:00
|
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|
/* end of header */
|
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|
|
if (line[0] == '\0')
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|
return 0;
|
|
|
|
|
|
|
|
p = line;
|
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|
|
if (line_count == 0) {
|
|
|
|
while (!isspace(*p) && *p != '\0')
|
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|
p++;
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|
|
while (isspace(*p))
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|
p++;
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|
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s->http_code = strtol(p, NULL, 10);
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|
|
#ifdef DEBUG
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|
printf("http_code=%d\n", s->http_code);
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|
|
#endif
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|
|
|
} else {
|
|
|
|
while (*p != '\0' && *p != ':')
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p++;
|
2005-12-17 19:14:38 +01:00
|
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|
if (*p != ':')
|
2001-07-22 16:18:56 +02:00
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return 1;
|
2005-12-17 19:14:38 +01:00
|
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|
2001-07-22 16:18:56 +02:00
|
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*p = '\0';
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tag = line;
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p++;
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|
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while (isspace(*p))
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|
p++;
|
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|
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if (!strcmp(tag, "Location")) {
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|
|
strcpy(s->location, p);
|
2007-01-14 23:02:38 +01:00
|
|
|
*new_location = 1;
|
|
|
|
} else if (!strcmp (tag, "Content-Length") && s->filesize == -1) {
|
|
|
|
s->filesize = atoll(p);
|
|
|
|
} else if (!strcmp (tag, "Content-Range")) {
|
|
|
|
/* "bytes $from-$to/$document_size" */
|
|
|
|
const char *slash;
|
|
|
|
if (!strncmp (p, "bytes ", 6)) {
|
|
|
|
p += 6;
|
|
|
|
s->off = atoll(p);
|
|
|
|
if ((slash = strchr(p, '/')) && strlen(slash) > 0)
|
|
|
|
s->filesize = atoll(slash+1);
|
|
|
|
}
|
|
|
|
h->is_streamed = 0; /* we _can_ in fact seek */
|
2001-07-22 16:18:56 +02:00
|
|
|
}
|
|
|
|
}
|
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|
return 1;
|
|
|
|
}
|
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|
|
|
2004-08-12 02:09:32 +02:00
|
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|
static int http_connect(URLContext *h, const char *path, const char *hoststr,
|
2007-01-14 23:02:38 +01:00
|
|
|
const char *auth, int *new_location)
|
2001-07-22 16:18:56 +02:00
|
|
|
{
|
|
|
|
HTTPContext *s = h->priv_data;
|
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|
|
int post, err, ch;
|
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|
|
char line[1024], *q;
|
2006-07-19 10:06:24 +02:00
|
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|
char *auth_b64;
|
2007-01-14 23:02:38 +01:00
|
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|
offset_t off = s->off;
|
2001-07-22 16:18:56 +02:00
|
|
|
|
|
|
|
|
|
|
|
/* send http header */
|
|
|
|
post = h->flags & URL_WRONLY;
|
|
|
|
|
2006-10-29 12:53:07 +01:00
|
|
|
auth_b64 = av_base64_encode((uint8_t *)auth, strlen(auth));
|
2001-07-22 16:18:56 +02:00
|
|
|
snprintf(s->buffer, sizeof(s->buffer),
|
2007-01-14 23:02:38 +01:00
|
|
|
"%s %s HTTP/1.1\r\n"
|
2004-03-14 03:59:33 +01:00
|
|
|
"User-Agent: %s\r\n"
|
|
|
|
"Accept: */*\r\n"
|
2007-01-14 23:02:38 +01:00
|
|
|
"Range: bytes=%llu-\r\n"
|
2004-03-14 03:59:33 +01:00
|
|
|
"Host: %s\r\n"
|
2004-08-12 02:09:32 +02:00
|
|
|
"Authorization: Basic %s\r\n"
|
2004-03-14 03:59:33 +01:00
|
|
|
"\r\n",
|
2001-07-22 16:18:56 +02:00
|
|
|
post ? "POST" : "GET",
|
|
|
|
path,
|
2003-12-08 18:50:38 +01:00
|
|
|
LIBAVFORMAT_IDENT,
|
2007-01-14 23:02:38 +01:00
|
|
|
s->off,
|
2004-08-12 02:09:32 +02:00
|
|
|
hoststr,
|
2006-07-19 10:06:24 +02:00
|
|
|
auth_b64);
|
2005-12-17 19:14:38 +01:00
|
|
|
|
2006-07-19 10:06:24 +02:00
|
|
|
av_freep(&auth_b64);
|
2001-07-22 16:18:56 +02:00
|
|
|
if (http_write(h, s->buffer, strlen(s->buffer)) < 0)
|
2004-06-19 05:59:34 +02:00
|
|
|
return AVERROR_IO;
|
2005-12-17 19:14:38 +01:00
|
|
|
|
2001-07-22 16:18:56 +02:00
|
|
|
/* init input buffer */
|
|
|
|
s->buf_ptr = s->buffer;
|
|
|
|
s->buf_end = s->buffer;
|
|
|
|
s->line_count = 0;
|
2007-01-14 23:02:38 +01:00
|
|
|
s->off = 0;
|
2002-05-09 03:19:15 +02:00
|
|
|
if (post) {
|
|
|
|
sleep(1);
|
2001-07-22 16:18:56 +02:00
|
|
|
return 0;
|
2002-05-09 03:19:15 +02:00
|
|
|
}
|
2005-12-17 19:14:38 +01:00
|
|
|
|
2001-07-22 16:18:56 +02:00
|
|
|
/* wait for header */
|
|
|
|
q = line;
|
|
|
|
for(;;) {
|
|
|
|
ch = http_getc(s);
|
|
|
|
if (ch < 0)
|
2004-06-19 05:59:34 +02:00
|
|
|
return AVERROR_IO;
|
2001-07-22 16:18:56 +02:00
|
|
|
if (ch == '\n') {
|
|
|
|
/* process line */
|
|
|
|
if (q > line && q[-1] == '\r')
|
|
|
|
q--;
|
|
|
|
*q = '\0';
|
|
|
|
#ifdef DEBUG
|
|
|
|
printf("header='%s'\n", line);
|
|
|
|
#endif
|
2007-01-14 23:02:38 +01:00
|
|
|
err = process_line(h, line, s->line_count, new_location);
|
2001-07-22 16:18:56 +02:00
|
|
|
if (err < 0)
|
|
|
|
return err;
|
|
|
|
if (err == 0)
|
2007-01-14 23:02:38 +01:00
|
|
|
break;
|
2001-07-22 16:18:56 +02:00
|
|
|
s->line_count++;
|
|
|
|
q = line;
|
|
|
|
} else {
|
|
|
|
if ((q - line) < sizeof(line) - 1)
|
|
|
|
*q++ = ch;
|
|
|
|
}
|
|
|
|
}
|
2007-01-14 23:02:38 +01:00
|
|
|
|
|
|
|
return (off == s->off) ? 0 : -1;
|
2001-07-22 16:18:56 +02:00
|
|
|
}
|
|
|
|
|
|
|
|
|
2003-02-11 17:35:48 +01:00
|
|
|
static int http_read(URLContext *h, uint8_t *buf, int size)
|
2001-07-22 16:18:56 +02:00
|
|
|
{
|
|
|
|
HTTPContext *s = h->priv_data;
|
2004-03-14 03:59:33 +01:00
|
|
|
int len;
|
2001-07-22 16:18:56 +02:00
|
|
|
|
2004-03-14 03:59:33 +01:00
|
|
|
/* 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 {
|
|
|
|
len = url_read(s->hd, buf, size);
|
2001-07-22 16:18:56 +02:00
|
|
|
}
|
2007-01-14 23:02:38 +01:00
|
|
|
if (len > 0)
|
|
|
|
s->off += len;
|
2004-03-14 03:59:33 +01:00
|
|
|
return len;
|
2001-07-22 16:18:56 +02:00
|
|
|
}
|
|
|
|
|
|
|
|
/* used only when posting data */
|
2003-02-11 17:35:48 +01:00
|
|
|
static int http_write(URLContext *h, uint8_t *buf, int size)
|
2001-07-22 16:18:56 +02:00
|
|
|
{
|
|
|
|
HTTPContext *s = h->priv_data;
|
2002-07-24 19:53:23 +02:00
|
|
|
return url_write(s->hd, buf, size);
|
2001-07-22 16:18:56 +02:00
|
|
|
}
|
|
|
|
|
|
|
|
static int http_close(URLContext *h)
|
|
|
|
{
|
|
|
|
HTTPContext *s = h->priv_data;
|
2002-07-24 19:53:23 +02:00
|
|
|
url_close(s->hd);
|
|
|
|
av_free(s);
|
2001-07-22 16:18:56 +02:00
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
2007-01-14 23:02:38 +01:00
|
|
|
static offset_t http_seek(URLContext *h, offset_t off, int whence)
|
|
|
|
{
|
|
|
|
HTTPContext *s = h->priv_data;
|
|
|
|
URLContext *old_hd = s->hd;
|
|
|
|
offset_t old_off = s->off;
|
|
|
|
|
|
|
|
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 */
|
|
|
|
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) {
|
|
|
|
s->hd = old_hd;
|
|
|
|
s->off = old_off;
|
|
|
|
return -1;
|
|
|
|
}
|
|
|
|
url_close(old_hd);
|
|
|
|
return off;
|
|
|
|
}
|
|
|
|
|
2001-07-22 16:18:56 +02:00
|
|
|
URLProtocol http_protocol = {
|
|
|
|
"http",
|
|
|
|
http_open,
|
|
|
|
http_read,
|
|
|
|
http_write,
|
2007-01-14 23:02:38 +01:00
|
|
|
http_seek,
|
2001-07-22 16:18:56 +02:00
|
|
|
http_close,
|
|
|
|
};
|