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mpv/libmpdemux/asf_mmst_streaming.c

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// mmst implementation taken from the xine-mms plugin made by majormms (http://geocities.com/majormms/)
//
// ported to mplayer by Abhijeet Phatak <abhijeetphatak@yahoo.com>
// date : 16 April 2002
//
// information about the mms protocol can be find at http://get.to/sdp
//
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include <errno.h>
#include <inttypes.h>
#include "config.h"
#ifndef HAVE_WINSOCK2
#define closesocket close
#else
#include <winsock2.h>
#endif
#ifndef USE_SETLOCALE
#undef USE_ICONV
#endif
#ifdef USE_ICONV
#include <iconv.h>
#ifdef USE_LANGINFO
#include <langinfo.h>
#endif
#include <locale.h>
#endif
#include "url.h"
#include "asf.h"
#include "stream.h"
#include "network.h"
#define BUF_SIZE 102400
typedef struct
{
uint8_t buf[BUF_SIZE];
int num_bytes;
} command_t;
static int seq_num;
static int num_stream_ids;
static int stream_ids[20];
static int get_data (int s, char *buf, size_t count);
static void put_32 (command_t *cmd, uint32_t value)
{
cmd->buf[cmd->num_bytes ] = value % 256;
value = value >> 8;
cmd->buf[cmd->num_bytes+1] = value % 256 ;
value = value >> 8;
cmd->buf[cmd->num_bytes+2] = value % 256 ;
value = value >> 8;
cmd->buf[cmd->num_bytes+3] = value % 256 ;
cmd->num_bytes += 4;
}
static uint32_t get_32 (unsigned char *cmd, int offset)
{
uint32_t ret;
ret = cmd[offset] ;
ret |= cmd[offset+1]<<8 ;
ret |= cmd[offset+2]<<16 ;
ret |= cmd[offset+3]<<24 ;
return ret;
}
static void send_command (int s, int command, uint32_t switches,
uint32_t extra, int length,
char *data)
{
command_t cmd;
int len8;
len8 = (length + 7) / 8;
cmd.num_bytes = 0;
put_32 (&cmd, 0x00000001); /* start sequence */
put_32 (&cmd, 0xB00BFACE); /* #-)) */
put_32 (&cmd, len8*8 + 32);
put_32 (&cmd, 0x20534d4d); /* protocol type "MMS " */
put_32 (&cmd, len8 + 4);
put_32 (&cmd, seq_num);
seq_num++;
put_32 (&cmd, 0x0); /* unknown */
put_32 (&cmd, 0x0);
put_32 (&cmd, len8+2);
put_32 (&cmd, 0x00030000 | command); /* dir | command */
put_32 (&cmd, switches);
put_32 (&cmd, extra);
memcpy (&cmd.buf[48], data, length);
if (length & 7)
memset(&cmd.buf[48 + length], 0, 8 - (length & 7));
if (send (s, cmd.buf, len8*8+48, 0) != (len8*8+48)) {
printf ("write error\n");
}
}
#ifdef USE_ICONV
static iconv_t url_conv;
#endif
static void string_utf16(char *dest, char *src, int len) {
int i;
#ifdef USE_ICONV
size_t len1, len2;
char *ip, *op;
if (url_conv != (iconv_t)(-1))
{
memset(dest, 0, 1000);
len1 = len; len2 = 1000;
ip = src; op = dest;
iconv(url_conv, &ip, &len1, &op, &len2);
}
else
{
#endif
for (i=0; i<len; i++) {
dest[i*2] = src[i];
dest[i*2+1] = 0;
}
/* trailing zeroes */
dest[i*2] = 0;
dest[i*2+1] = 0;
#ifdef USE_ICONV
}
#endif
}
static void get_answer (int s)
{
char data[BUF_SIZE];
int command = 0x1b;
while (command == 0x1b) {
int len;
len = recv (s, data, BUF_SIZE, 0) ;
if (!len) {
printf ("\nalert! eof\n");
return;
}
command = get_32 (data, 36) & 0xFFFF;
if (command == 0x1b)
send_command (s, 0x1b, 0, 0, 0, data);
}
}
static int get_data (int s, char *buf, size_t count)
{
ssize_t len;
size_t total = 0;
while (total < count) {
len = recv (s, &buf[total], count-total, 0);
if (len<=0) {
perror ("read error:");
return 0;
}
total += len;
if (len != 0) {
// printf ("[%d/%d]", total, count);
fflush (stdout);
}
}
return 1;
}
static int get_header (int s, uint8_t *header, streaming_ctrl_t *streaming_ctrl)
{
unsigned char pre_header[8];
int header_len;
header_len = 0;
while (1) {
if (!get_data (s, pre_header, 8)) {
printf ("pre-header read failed\n");
return 0;
}
if (pre_header[4] == 0x02) {
int packet_len;
packet_len = (pre_header[7] << 8 | pre_header[6]) - 8;
// printf ("asf header packet detected, len=%d\n", packet_len);
if (!get_data (s, &header[header_len], packet_len)) {
printf ("header data read failed\n");
return 0;
}
header_len += packet_len;
if ( (header[header_len-1] == 1) && (header[header_len-2]==1)) {
if( streaming_bufferize( streaming_ctrl, header, header_len )<0 ) {
return -1;
}
// printf ("get header packet finished\n");
return (header_len);
}
} else {
int32_t packet_len;
int command;
char data[BUF_SIZE];
if (!get_data (s, (char*)&packet_len, 4)) {
printf ("packet_len read failed\n");
return 0;
}
packet_len = get_32 ((unsigned char*)&packet_len, 0) + 4;
// printf ("command packet detected, len=%d\n", packet_len);
if (!get_data (s, data, packet_len)) {
printf ("command data read failed\n");
return 0;
}
command = get_32 (data, 24) & 0xFFFF;
// printf ("command: %02x\n", command);
if (command == 0x1b)
send_command (s, 0x1b, 0, 0, 0, data);
}
// printf ("get header packet succ\n");
}
}
static int interp_header (uint8_t *header, int header_len)
{
int i;
int packet_length=-1;
/*
* parse header
*/
i = 30;
while (i<header_len) {
uint64_t guid_1, guid_2, length;
guid_2 = (uint64_t)header[i] | ((uint64_t)header[i+1]<<8)
| ((uint64_t)header[i+2]<<16) | ((uint64_t)header[i+3]<<24)
| ((uint64_t)header[i+4]<<32) | ((uint64_t)header[i+5]<<40)
| ((uint64_t)header[i+6]<<48) | ((uint64_t)header[i+7]<<56);
i += 8;
guid_1 = (uint64_t)header[i] | ((uint64_t)header[i+1]<<8)
| ((uint64_t)header[i+2]<<16) | ((uint64_t)header[i+3]<<24)
| ((uint64_t)header[i+4]<<32) | ((uint64_t)header[i+5]<<40)
| ((uint64_t)header[i+6]<<48) | ((uint64_t)header[i+7]<<56);
i += 8;
// printf ("guid found: %016llx%016llx\n", guid_1, guid_2);
length = (uint64_t)header[i] | ((uint64_t)header[i+1]<<8)
| ((uint64_t)header[i+2]<<16) | ((uint64_t)header[i+3]<<24)
| ((uint64_t)header[i+4]<<32) | ((uint64_t)header[i+5]<<40)
| ((uint64_t)header[i+6]<<48) | ((uint64_t)header[i+7]<<56);
i += 8;
if ( (guid_1 == 0x6cce6200aa00d9a6ULL) && (guid_2 == 0x11cf668e75b22630ULL) ) {
printf ("header object\n");
} else if ((guid_1 == 0x6cce6200aa00d9a6ULL) && (guid_2 == 0x11cf668e75b22636ULL)) {
printf ("data object\n");
} else if ((guid_1 == 0x6553200cc000e48eULL) && (guid_2 == 0x11cfa9478cabdca1ULL)) {
packet_length = get_32(header, i+92-24);
printf ("file object, packet length = %d (%d)\n",
packet_length, get_32(header, i+96-24));
} else if ((guid_1 == 0x6553200cc000e68eULL) && (guid_2 == 0x11cfa9b7b7dc0791ULL)) {
int stream_id = header[i+48] | header[i+49] << 8;
printf ("stream object, stream id: %d\n", stream_id);
stream_ids[num_stream_ids] = stream_id;
num_stream_ids++;
} else {
printf ("unknown object\n");
}
// printf ("length : %lld\n", length);
i += length-24;
}
return packet_length;
}
static int get_media_packet (int s, int padding, streaming_ctrl_t *stream_ctrl) {
unsigned char pre_header[8];
char data[BUF_SIZE];
if (!get_data (s, pre_header, 8)) {
printf ("pre-header read failed\n");
return 0;
}
// for (i=0; i<8; i++)
// printf ("pre_header[%d] = %02x (%d)\n",
// i, pre_header[i], pre_header[i]);
if (pre_header[4] == 0x04) {
int packet_len;
packet_len = (pre_header[7] << 8 | pre_header[6]) - 8;
// printf ("asf media packet detected, len=%d\n", packet_len);
if (!get_data (s, data, packet_len)) {
printf ("media data read failed\n");
return 0;
}
streaming_bufferize(stream_ctrl, data, padding);
} else {
int32_t packet_len;
int command;
if (!get_data (s, (char*)&packet_len, 4)) {
printf ("packet_len read failed\n");
return 0;
}
packet_len = get_32 ((unsigned char*)&packet_len, 0) + 4;
if (!get_data (s, data, packet_len)) {
printf ("command data read failed\n");
return 0;
}
if ( (pre_header[7] != 0xb0) || (pre_header[6] != 0x0b)
|| (pre_header[5] != 0xfa) || (pre_header[4] != 0xce) ) {
printf ("missing signature\n");
return -1;
}
command = get_32 (data, 24) & 0xFFFF;
// printf ("\ncommand packet detected, len=%d cmd=0x%X\n", packet_len, command);
if (command == 0x1b)
send_command (s, 0x1b, 0, 0, 0, data);
else if (command == 0x1e) {
printf ("everything done. Thank you for downloading a media file containing proprietary and patentend technology.\n");
return 0;
}
else if (command == 0x21 ) {
// Looks like it's new in WMS9
// Unknown command, but ignoring it seems to work.
return 0;
}
else if (command != 0x05) {
printf ("unknown command %02x\n", command);
return -1;
}
}
// printf ("get media packet succ\n");
return 1;
}
static int packet_length1;
int
asf_mmst_streaming_read( int fd, char *buffer, int size, streaming_ctrl_t *stream_ctrl )
{
int len;
while( stream_ctrl->buffer_size==0 ) {
// buffer is empty - fill it!
int ret = get_media_packet( fd, packet_length1, stream_ctrl);
if( ret<0 ) {
printf("get_media_packet error : %s\n",strerror(errno));
return -1;
} else if (ret==0) //EOF?
return ret;
}
len = stream_ctrl->buffer_size-stream_ctrl->buffer_pos;
if(len>size) len=size;
memcpy( buffer, (stream_ctrl->buffer)+(stream_ctrl->buffer_pos), len );
stream_ctrl->buffer_pos += len;
if( stream_ctrl->buffer_pos>=stream_ctrl->buffer_size ) {
free( stream_ctrl->buffer );
stream_ctrl->buffer = NULL;
stream_ctrl->buffer_size = 0;
stream_ctrl->buffer_pos = 0;
}
return len;
}
int
asf_mmst_streaming_seek( int fd, off_t pos, streaming_ctrl_t *streaming_ctrl )
{
return -1;
// Shut up gcc warning
fd++;
pos++;
streaming_ctrl=NULL;
}
int asf_mmst_streaming_start(stream_t *stream)
{
char str[1024];
char data[BUF_SIZE];
uint8_t asf_header[8192];
int asf_header_len;
int len, i, packet_length;
char *path, *unescpath;
URL_t *url1 = stream->streaming_ctrl->url;
int s = stream->fd;
if( s>0 ) {
closesocket( stream->fd );
stream->fd = -1;
}
/* parse url */
path = strchr(url1->file,'/') + 1;
/* mmst filename are not url_escaped by MS MediaPlayer and are expected as
* "plain text" by the server, so need to decode it here
*/
unescpath=malloc(strlen(path)+1);
if (!unescpath) {
mp_msg(MSGT_NETWORK,MSGL_FATAL,"Memory allocation failed!\n");
return -1;
}
url_unescape_string(unescpath,path);
path=unescpath;
if( url1->port==0 ) {
url1->port=1755;
}
s = connect2Server( url1->hostname, url1->port, 1);
if( s<0 ) {
free(path);
return s;
}
printf ("connected\n");
seq_num=0;
/*
* Send the initial connect info including player version no. Client GUID (random) and the host address being connected to.
* This command is sent at the very start of protocol initiation. It sends local information to the serve
* cmd 1 0x01
* */
/* prepare for the url encoding conversion */
#ifdef USE_ICONV
setlocale(LC_CTYPE, "");
#ifdef USE_LANGINFO
url_conv = iconv_open("UTF-16LE",nl_langinfo(CODESET));
#else
url_conv = iconv_open("UTF-16LE",setlocale(LC_CTYPE, NULL));
#endif
#endif
snprintf (str, 1023, "\034\003NSPlayer/7.0.0.1956; {33715801-BAB3-9D85-24E9-03B90328270A}; Host: %s", url1->hostname);
string_utf16 (data, str, strlen(str));
// send_command(s, commandno ....)
send_command (s, 1, 0, 0x0004000b, strlen(str)*2+2, data);
len = recv (s, data, BUF_SIZE, 0) ;
/*This sends details of the local machine IP address to a Funnel system at the server.
* Also, the TCP or UDP transport selection is sent.
*
* here 192.168.0.1 is local ip address TCP/UDP states the tronsport we r using
* and 1037 is the local TCP or UDP socket number
* cmd 2 0x02
* */
string_utf16 (&data[8], "\002\000\\\\192.168.0.1\\TCP\\1037", 24);
memset (data, 0, 8);
send_command (s, 2, 0, 0, 24*2+10, data);
len = recv (s, data, BUF_SIZE, 0) ;
/* This command sends file path (at server) and file name request to the server.
* 0x5 */
string_utf16 (&data[8], path, strlen(path));
memset (data, 0, 8);
send_command (s, 5, 0, 0, strlen(path)*2+10, data);
free(path);
get_answer (s);
/* The ASF header chunk request. Includes ?session' variable for pre header value.
* After this command is sent,
* the server replies with 0x11 command and then the header chunk with header data follows.
* 0x15 */
memset (data, 0, 40);
data[32] = 2;
send_command (s, 0x15, 1, 0, 40, data);
num_stream_ids = 0;
/* get_headers(s, asf_header); */
asf_header_len = get_header (s, asf_header, stream->streaming_ctrl);
// printf("---------------------------------- asf_header %d\n",asf_header);
if (asf_header_len==0) return -1; //error reading header
packet_length = interp_header (asf_header, asf_header_len);
/*
* This command is the media stream MBR selector. Switches are always 6 bytes in length.
* After all switch elements, data ends with bytes [00 00] 00 20 ac 40 [02].
* Where:
* [00 00] shows 0x61 0x00 (on the first 33 sent) or 0xff 0xff for ASF files, and with no ending data for WMV files.
* It is not yet understood what all this means.
* And the last [02] byte is probably the header ?session' value.
*
* 0x33 */
memset (data, 0, 40);
for (i=1; i<num_stream_ids; i++) {
data [ (i-1) * 6 + 2 ] = 0xFF;
data [ (i-1) * 6 + 3 ] = 0xFF;
data [ (i-1) * 6 + 4 ] = stream_ids[i];
data [ (i-1) * 6 + 5 ] = 0x00;
}
send_command (s, 0x33, num_stream_ids, 0xFFFF | stream_ids[0] << 16, (num_stream_ids-1)*6+2 , data);
get_answer (s);
/* Start sending file from packet xx.
* This command is also used for resume downloads or requesting a lost packet.
* Also used for seeking by sending a play point value which seeks to the media time point.
* Includes ?session' value in pre header and the maximum media stream time.
* 0x07 */
memset (data, 0, 40);
for (i=8; i<16; i++)
data[i] = 0xFF;
data[20] = 0x04;
send_command (s, 0x07, 1, 0xFFFF | stream_ids[0] << 16, 24, data);
stream->fd = s;
stream->streaming_ctrl->streaming_read = asf_mmst_streaming_read;
stream->streaming_ctrl->streaming_seek = asf_mmst_streaming_seek;
stream->streaming_ctrl->buffering = 1;
stream->streaming_ctrl->status = streaming_playing_e;
packet_length1 = packet_length;
printf("mmst packet_length = %d\n",packet_length);
#ifdef USE_ICONV
if (url_conv != (iconv_t)(-1))
iconv_close(url_conv);
#endif
return 0;
}
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