mirror of https://github.com/mpv-player/mpv
654 lines
18 KiB
C
654 lines
18 KiB
C
/*
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* This file was ported to MPlayer from xine CVS real.c,v 1.8 2003/03/30 17:11:50
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*/
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/*
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* Copyright (C) 2002 the xine project
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*
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* This file is part of xine, a free video player.
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*
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* xine is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* xine 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
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA
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*
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*
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* special functions for real streams.
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* adopted from joschkas real tools.
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*
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*/
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#include <stdio.h>
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#include <string.h>
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#include "config.h"
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#include "libavutil/common.h"
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#include "libavutil/attributes.h"
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#include "real.h"
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#include "asmrp.h"
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#include "sdpplin.h"
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#include "xbuffer.h"
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#include "libavutil/md5.h"
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#include "ffmpeg_files/intreadwrite.h"
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#include "libavutil/base64.h"
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#include <libavutil/avutil.h>
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#include "stream/http.h"
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#include "mp_msg.h"
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/*
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#define LOG
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*/
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#define XOR_TABLE_SIZE 37
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static const unsigned char xor_table[XOR_TABLE_SIZE] = {
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0x05, 0x18, 0x74, 0xd0, 0x0d, 0x09, 0x02, 0x53,
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0xc0, 0x01, 0x05, 0x05, 0x67, 0x03, 0x19, 0x70,
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0x08, 0x27, 0x66, 0x10, 0x10, 0x72, 0x08, 0x09,
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0x63, 0x11, 0x03, 0x71, 0x08, 0x08, 0x70, 0x02,
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0x10, 0x57, 0x05, 0x18, 0x54 };
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#define BUF_SIZE 4096
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#ifdef LOG
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static void hexdump (const char *buf, int length) {
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int i;
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printf (" hexdump> ");
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for (i = 0; i < length; i++) {
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unsigned char c = buf[i];
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printf ("%02x", c);
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if ((i % 16) == 15)
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printf ("\n ");
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if ((i % 2) == 1)
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printf (" ");
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}
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printf ("\n");
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}
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#endif
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static void real_calc_response_and_checksum (char *response, char *chksum, char *challenge) {
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int ch_len;
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int i;
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unsigned char zres[16], buf[64];
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/* initialize buffer */
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AV_WB32(buf, 0xa1e9149d);
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AV_WB32(buf+4, 0x0e6b3b59);
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/* some (length) checks */
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if (challenge != NULL)
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{
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ch_len = strlen (challenge);
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if (ch_len == 40) /* what a hack... */
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ch_len=32;
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if ( ch_len > 56 ) ch_len=56;
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/* copy challenge to buf */
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memcpy(buf+8, challenge, ch_len);
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memset(buf+8+ch_len, 0, 56-ch_len);
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}
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/* xor challenge bytewise with xor_table */
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for (i=0; i<XOR_TABLE_SIZE; i++)
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buf[8+i] ^= xor_table[i];
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av_md5_sum(zres, buf, 64);
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/* convert zres to ascii string */
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for (i=0; i<16; i++ )
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sprintf(response+i*2, "%02x", zres[i]);
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/* add tail */
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strcpy (&response[32], "01d0a8e3");
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/* calculate checksum */
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for (i=0; i<8; i++)
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chksum[i] = response[i*4];
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chksum[8] = 0;
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}
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/*
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* takes a MLTI-Chunk and a rule number got from match_asm_rule,
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* returns a pointer to selected data and number of bytes in that.
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*/
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static int select_mlti_data(const char *mlti_chunk, int mlti_size, int selection, char **out) {
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int numrules, codec, size;
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int i;
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/* MLTI chunk should begin with MLTI */
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if ((mlti_chunk[0] != 'M')
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||(mlti_chunk[1] != 'L')
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||(mlti_chunk[2] != 'T')
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||(mlti_chunk[3] != 'I'))
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{
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#ifdef LOG
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printf("libreal: MLTI tag not detected, copying data\n");
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#endif
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*out = xbuffer_copyin(*out, 0, mlti_chunk, mlti_size);
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return mlti_size;
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}
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mlti_chunk+=4;
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/* next 16 bits are the number of rules */
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numrules=AV_RB16(mlti_chunk);
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if (selection >= numrules) return 0;
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/* now <numrules> indices of codecs follows */
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/* we skip to selection */
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mlti_chunk+=(selection+1)*2;
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/* get our index */
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codec=AV_RB16(mlti_chunk);
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/* skip to number of codecs */
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mlti_chunk+=(numrules-selection)*2;
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/* get number of codecs */
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numrules=AV_RB16(mlti_chunk);
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if (codec >= numrules) {
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mp_msg(MSGT_STREAM, MSGL_WARN, "realrtsp: codec index >= number of codecs. %i %i\n",
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codec, numrules);
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return 0;
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}
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mlti_chunk+=2;
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/* now seek to selected codec */
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for (i=0; i<codec; i++) {
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size=AV_RB32(mlti_chunk);
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mlti_chunk+=size+4;
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}
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size=AV_RB32(mlti_chunk);
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#ifdef LOG
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hexdump(mlti_chunk+4, size);
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#endif
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*out = xbuffer_copyin(*out, 0, mlti_chunk+4, size);
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return size;
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}
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/*
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* looking at stream description.
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*/
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static rmff_header_t *real_parse_sdp(char *data, char **stream_rules, uint32_t bandwidth) {
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sdpplin_t *desc;
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rmff_header_t *header;
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char *buf;
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int len, i;
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int max_bit_rate=0;
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int avg_bit_rate=0;
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int max_packet_size=0;
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int avg_packet_size=0;
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int duration=0;
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if (!data) return NULL;
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desc=sdpplin_parse(data);
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if (!desc) return NULL;
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buf = xbuffer_init(2048);
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header=calloc(1,sizeof(rmff_header_t));
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header->fileheader=rmff_new_fileheader(4+desc->stream_count);
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header->cont=rmff_new_cont(
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desc->title,
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desc->author,
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desc->copyright,
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desc->abstract);
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header->data=rmff_new_dataheader(0,0);
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header->streams=calloc(1,sizeof(rmff_mdpr_t*)*(desc->stream_count+1));
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#ifdef LOG
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printf("number of streams: %u\n", desc->stream_count);
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#endif
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for (i=0; i<desc->stream_count; i++) {
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int j=0;
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int n;
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char b[64];
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int rulematches[MAX_RULEMATCHES];
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if (!desc->stream[i])
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continue;
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#ifdef LOG
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printf("calling asmrp_match with:\n%s\n%u\n", desc->stream[i]->asm_rule_book, bandwidth);
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#endif
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n=asmrp_match(desc->stream[i]->asm_rule_book, bandwidth, rulematches);
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for (j=0; j<n; j++) {
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#ifdef LOG
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printf("asmrp rule match: %u for stream %u\n", rulematches[j], desc->stream[i]->stream_id);
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#endif
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sprintf(b,"stream=%u;rule=%u,", desc->stream[i]->stream_id, rulematches[j]);
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*stream_rules = xbuffer_strcat(*stream_rules, b);
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}
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if (!desc->stream[i]->mlti_data) {
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len = 0;
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buf = xbuffer_free(buf);
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} else
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len=select_mlti_data(desc->stream[i]->mlti_data, desc->stream[i]->mlti_data_size, rulematches[0], &buf);
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header->streams[i]=rmff_new_mdpr(
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desc->stream[i]->stream_id,
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desc->stream[i]->max_bit_rate,
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desc->stream[i]->avg_bit_rate,
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desc->stream[i]->max_packet_size,
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desc->stream[i]->avg_packet_size,
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desc->stream[i]->start_time,
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desc->stream[i]->preroll,
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desc->stream[i]->duration,
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desc->stream[i]->stream_name,
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desc->stream[i]->mime_type,
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len,
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buf);
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duration=FFMAX(duration,desc->stream[i]->duration);
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max_bit_rate+=desc->stream[i]->max_bit_rate;
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avg_bit_rate+=desc->stream[i]->avg_bit_rate;
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max_packet_size=FFMAX(max_packet_size, desc->stream[i]->max_packet_size);
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if (avg_packet_size)
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avg_packet_size=(avg_packet_size + desc->stream[i]->avg_packet_size) / 2;
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else
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avg_packet_size=desc->stream[i]->avg_packet_size;
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}
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if (*stream_rules && strlen(*stream_rules) && (*stream_rules)[strlen(*stream_rules)-1] == ',')
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(*stream_rules)[strlen(*stream_rules)-1]=0; /* delete last ',' in stream_rules */
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header->prop=rmff_new_prop(
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max_bit_rate,
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avg_bit_rate,
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max_packet_size,
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avg_packet_size,
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0,
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duration,
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0,
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0,
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0,
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desc->stream_count,
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desc->flags);
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rmff_fix_header(header);
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buf = xbuffer_free(buf);
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sdpplin_free(desc);
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return header;
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}
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int real_get_rdt_chunk(rtsp_t *rtsp_session, char **buffer, int rdt_rawdata) {
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int n=1;
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uint8_t header[8];
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rmff_pheader_t ph;
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int size;
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int flags1, flags2;
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int unknown1 av_unused;
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uint32_t ts;
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static uint32_t prev_ts = -1;
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static int prev_stream_number = -1;
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n=rtsp_read_data(rtsp_session, header, 8);
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if (n<8) return 0;
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if (header[0] != 0x24)
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{
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mp_msg(MSGT_STREAM, MSGL_WARN, "realrtsp: rdt chunk not recognized: got 0x%02x\n",
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header[0]);
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return 0;
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}
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/* header[1] is channel, normally 0, ignored */
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size=(header[2]<<8)+header[3];
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flags1=header[4];
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if ((flags1 & 0xc0) != 0x40)
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{
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#ifdef LOG
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printf("got flags1: 0x%02x\n",flags1);
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#endif
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if(header[6] == 0x06) { // eof packet
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rtsp_read_data(rtsp_session, header, 7); // Skip the rest of the eof packet
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/* Some files have short auxiliary streams, we must ignore eof packets
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* for these streams to avoid premature eof.
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* Now the code declares eof only if the stream with id == 0 gets eof
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* (old code was: eof on the first eof packet received).
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*/
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if(flags1 & 0x7c) // ignore eof for streams with id != 0
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return 0;
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mp_msg(MSGT_STREAM, MSGL_INFO, "realrtsp: Stream EOF detected\n");
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return -1;
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}
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header[0]=header[5];
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header[1]=header[6];
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header[2]=header[7];
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n=rtsp_read_data(rtsp_session, header+3, 5);
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if (n<5) return 0;
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#ifdef LOG
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printf("ignoring bytes:\n");
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hexdump(header, 8);
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#endif
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n=rtsp_read_data(rtsp_session, header+4, 4);
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if (n<4) return 0;
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flags1=header[4];
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size-=9;
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}
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flags2=header[7];
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// header[5..6] == frame number in stream
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unknown1=(header[5]<<16)+(header[6]<<8)+(header[7]);
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n=rtsp_read_data(rtsp_session, header, 6);
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if (n<6) return 0;
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ts=AV_RB32(header);
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#ifdef LOG
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printf("ts: %u, size: %u, flags: 0x%02x, unknown values: 0x%06x 0x%02x 0x%02x\n",
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ts, size, flags1, unknown1, header[4], header[5]);
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#endif
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size+=2;
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ph.object_version=0;
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ph.length=size;
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ph.stream_number=(flags1>>1)&0x1f;
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ph.timestamp=ts;
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ph.reserved=0;
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if ((flags2&1) == 0 && (prev_ts != ts || prev_stream_number != ph.stream_number))
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{
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prev_ts = ts;
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prev_stream_number = ph.stream_number;
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ph.flags=2;
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}
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else
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ph.flags=0;
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*buffer = xbuffer_ensure_size(*buffer, 12+size);
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if(rdt_rawdata) {
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if (size < 12)
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return 0;
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n=rtsp_read_data(rtsp_session, *buffer, size-12);
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return (n <= 0) ? 0 : n;
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}
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rmff_dump_pheader(&ph, *buffer);
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if (size < 12)
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return 0;
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size-=12;
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n=rtsp_read_data(rtsp_session, (*buffer)+12, size);
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return (n <= 0) ? 0 : n+12;
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}
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static int convert_timestamp(char *str, int *sec, int *msec) {
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int hh, mm, ss, ms = 0;
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// Timestamp may be optionally quoted with ", skip it
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// Since the url is escaped when we get here, we skip the string "%22"
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if (!strncmp(str, "%22", 3))
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str += 3;
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if (sscanf(str, "%d:%d:%d.%d", &hh, &mm, &ss, &ms) < 3) {
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hh = 0;
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if (sscanf(str, "%d:%d.%d", &mm, &ss, &ms) < 2) {
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mm = 0;
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if (sscanf(str, "%d.%d", &ss, &ms) < 1) {
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ss = 0;
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ms = 0;
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}
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}
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}
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if (sec)
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*sec = hh * 3600 + mm * 60 + ss;
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if (msec)
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*msec = ms;
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return 1;
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}
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//! maximum size of the rtsp description, must be < INT_MAX
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#define MAX_DESC_BUF (20 * 1024 * 1024)
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rmff_header_t *real_setup_and_get_header(rtsp_t *rtsp_session, uint32_t bandwidth,
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char *username, char *password) {
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char *description=NULL;
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char *session_id=NULL;
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rmff_header_t *h = NULL;
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char *challenge1 = NULL;
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char challenge2[41];
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char checksum[9];
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char *subscribe = NULL;
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char *buf = xbuffer_init(256);
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char *mrl=rtsp_get_mrl(rtsp_session);
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unsigned int size;
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int status;
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uint32_t maxbandwidth = bandwidth;
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char* authfield = NULL;
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int i;
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/* get challenge */
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challenge1=rtsp_search_answers(rtsp_session,"RealChallenge1");
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if (!challenge1)
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goto out;
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challenge1=strdup(challenge1);
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#ifdef LOG
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printf("real: Challenge1: %s\n", challenge1);
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#endif
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/* set a reasonable default to get the best stream, unless bandwidth given */
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if (!bandwidth)
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bandwidth = 10485800;
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/* request stream description */
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rtsp_send_describe:
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rtsp_schedule_field(rtsp_session, "Accept: application/sdp");
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sprintf(buf, "Bandwidth: %u", bandwidth);
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rtsp_schedule_field(rtsp_session, buf);
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rtsp_schedule_field(rtsp_session, "GUID: 00000000-0000-0000-0000-000000000000");
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rtsp_schedule_field(rtsp_session, "RegionData: 0");
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rtsp_schedule_field(rtsp_session, "ClientID: Linux_2.4_6.0.9.1235_play32_RN01_EN_586");
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rtsp_schedule_field(rtsp_session, "SupportsMaximumASMBandwidth: 1");
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rtsp_schedule_field(rtsp_session, "Language: en-US");
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rtsp_schedule_field(rtsp_session, "Require: com.real.retain-entity-for-setup");
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if(authfield)
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rtsp_schedule_field(rtsp_session, authfield);
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status=rtsp_request_describe(rtsp_session,NULL);
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if (status == 401) {
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int authlen, b64_authlen;
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char *authreq;
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char* authstr = NULL;
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if (authfield) {
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mp_msg(MSGT_STREAM, MSGL_ERR, "realrtsp: authorization failed, check your credentials\n");
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goto autherr;
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}
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if (!(authreq = rtsp_search_answers(rtsp_session,"WWW-Authenticate"))) {
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mp_msg(MSGT_STREAM, MSGL_ERR, "realrtsp: 401 but no auth request, aborting\n");
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goto autherr;
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}
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if (!username) {
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mp_msg(MSGT_STREAM, MSGL_ERR, "realrtsp: auth required but no username supplied\n");
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goto autherr;
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}
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if (!strstr(authreq, "Basic")) {
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mp_msg(MSGT_STREAM, MSGL_ERR, "realrtsp: authenticator not supported (%s)\n", authreq);
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goto autherr;
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}
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authlen = strlen(username) + 1 + (password ? strlen(password) : 0);
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authstr = malloc(authlen + 1);
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sprintf(authstr, "%s:%s", username, password ? password : "");
|
|
b64_authlen = AV_BASE64_SIZE(authlen);
|
|
authfield = malloc(21 + b64_authlen);
|
|
strcpy(authfield, "Authorization: Basic ");
|
|
av_base64_encode(authfield + 21, b64_authlen, authstr, authlen);
|
|
free(authstr);
|
|
goto rtsp_send_describe;
|
|
}
|
|
autherr:
|
|
|
|
free(authfield);
|
|
|
|
if ( status<200 || status>299 )
|
|
{
|
|
char *alert=rtsp_search_answers(rtsp_session,"Alert");
|
|
if (alert) {
|
|
mp_msg(MSGT_STREAM, MSGL_WARN, "realrtsp: got message from server:\n%s\n",
|
|
alert);
|
|
}
|
|
rtsp_send_ok(rtsp_session);
|
|
goto out;
|
|
}
|
|
|
|
/* receive description */
|
|
size=0;
|
|
if (!rtsp_search_answers(rtsp_session,"Content-length"))
|
|
mp_msg(MSGT_STREAM, MSGL_WARN, "real: got no Content-length!\n");
|
|
else
|
|
size=atoi(rtsp_search_answers(rtsp_session,"Content-length"));
|
|
|
|
// as size is unsigned this also catches the case (size < 0)
|
|
if (size > MAX_DESC_BUF) {
|
|
mp_msg(MSGT_STREAM, MSGL_ERR, "realrtsp: Content-length for description too big (> %uMB)!\n",
|
|
MAX_DESC_BUF/(1024*1024) );
|
|
goto out;
|
|
}
|
|
|
|
if (!rtsp_search_answers(rtsp_session,"ETag"))
|
|
mp_msg(MSGT_STREAM, MSGL_WARN, "realrtsp: got no ETag!\n");
|
|
else
|
|
session_id=strdup(rtsp_search_answers(rtsp_session,"ETag"));
|
|
|
|
#ifdef LOG
|
|
printf("real: Stream description size: %u\n", size);
|
|
#endif
|
|
|
|
description=malloc(size+1);
|
|
|
|
if( rtsp_read_data(rtsp_session, description, size) <= 0) {
|
|
goto out;
|
|
}
|
|
description[size]=0;
|
|
|
|
/* parse sdp (sdpplin) and create a header and a subscribe string */
|
|
subscribe = xbuffer_init(256);
|
|
strcpy(subscribe, "Subscribe: ");
|
|
h=real_parse_sdp(description, &subscribe, bandwidth);
|
|
if (!h) {
|
|
goto out;
|
|
}
|
|
rmff_fix_header(h);
|
|
|
|
#ifdef LOG
|
|
printf("Title: %s\nCopyright: %s\nAuthor: %s\nStreams: %i\n",
|
|
h->cont->title, h->cont->copyright, h->cont->author, h->prop->num_streams);
|
|
#endif
|
|
|
|
/* setup our streams */
|
|
real_calc_response_and_checksum (challenge2, checksum, challenge1);
|
|
buf = xbuffer_ensure_size(buf, strlen(challenge2) + strlen(checksum) + 32);
|
|
sprintf(buf, "RealChallenge2: %s, sd=%s", challenge2, checksum);
|
|
rtsp_schedule_field(rtsp_session, buf);
|
|
buf = xbuffer_ensure_size(buf, strlen(session_id) + 32);
|
|
sprintf(buf, "If-Match: %s", session_id);
|
|
rtsp_schedule_field(rtsp_session, buf);
|
|
rtsp_schedule_field(rtsp_session, "Transport: x-pn-tng/tcp;mode=play,rtp/avp/tcp;unicast;mode=play");
|
|
buf = xbuffer_ensure_size(buf, strlen(mrl) + 32);
|
|
sprintf(buf, "%s/streamid=0", mrl);
|
|
rtsp_request_setup(rtsp_session,buf,NULL);
|
|
|
|
/* Do setup for all the other streams we subscribed to */
|
|
for (i = 1; i < h->prop->num_streams; i++) {
|
|
rtsp_schedule_field(rtsp_session, "Transport: x-pn-tng/tcp;mode=play,rtp/avp/tcp;unicast;mode=play");
|
|
buf = xbuffer_ensure_size(buf, strlen(session_id) + 32);
|
|
sprintf(buf, "If-Match: %s", session_id);
|
|
rtsp_schedule_field(rtsp_session, buf);
|
|
|
|
buf = xbuffer_ensure_size(buf, strlen(mrl) + 32);
|
|
sprintf(buf, "%s/streamid=%d", mrl, i);
|
|
rtsp_request_setup(rtsp_session,buf,NULL);
|
|
}
|
|
/* set stream parameter (bandwidth) with our subscribe string */
|
|
rtsp_schedule_field(rtsp_session, subscribe);
|
|
rtsp_request_setparameter(rtsp_session,NULL);
|
|
|
|
/* set delivery bandwidth */
|
|
if (maxbandwidth) {
|
|
sprintf(buf, "SetDeliveryBandwidth: Bandwidth=%u;BackOff=0", maxbandwidth);
|
|
rtsp_schedule_field(rtsp_session, buf);
|
|
rtsp_request_setparameter(rtsp_session,NULL);
|
|
}
|
|
|
|
{
|
|
int s_ss = 0, s_ms = 0, e_ss = 0, e_ms = 0;
|
|
char *str;
|
|
if ((str = rtsp_get_param(rtsp_session, "start"))) {
|
|
convert_timestamp(str, &s_ss, &s_ms);
|
|
free(str);
|
|
}
|
|
if ((str = rtsp_get_param(rtsp_session, "end"))) {
|
|
convert_timestamp(str, &e_ss, &e_ms);
|
|
free(str);
|
|
}
|
|
if (s_ms) str = buf + sprintf(buf, "%s%d.%d-", "Range: npt=", s_ss, s_ms);
|
|
else str = buf + sprintf(buf, "%s%d-" , "Range: npt=", s_ss );
|
|
if (e_ms) sprintf(str, "%d.%d", e_ss, e_ms);
|
|
else if (e_ss) sprintf(str, "%d", e_ss );
|
|
}
|
|
rtsp_schedule_field(rtsp_session, buf);
|
|
/* and finally send a play request */
|
|
rtsp_request_play(rtsp_session,NULL);
|
|
|
|
out:
|
|
subscribe = xbuffer_free(subscribe);
|
|
buf = xbuffer_free(buf);
|
|
free(description);
|
|
free(session_id);
|
|
free(challenge1);
|
|
return h;
|
|
}
|
|
|
|
struct real_rtsp_session_t *
|
|
init_real_rtsp_session (void)
|
|
{
|
|
struct real_rtsp_session_t *real_rtsp_session = NULL;
|
|
|
|
real_rtsp_session = malloc (sizeof (struct real_rtsp_session_t));
|
|
real_rtsp_session->recv = xbuffer_init (BUF_SIZE);
|
|
real_rtsp_session->rdteof = 0;
|
|
real_rtsp_session->rdt_rawdata = 0;
|
|
|
|
return real_rtsp_session;
|
|
}
|
|
|
|
void
|
|
free_real_rtsp_session (struct real_rtsp_session_t* real_session)
|
|
{
|
|
if (!real_session)
|
|
return;
|
|
|
|
xbuffer_free (real_session->recv);
|
|
free (real_session);
|
|
}
|