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mpv/libmpdemux/network.c

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/*
* Network layer for MPlayer
* by Bertrand BAUDET <bertrand_baudet@yahoo.com>
* (C) 2001, MPlayer team.
*/
//#define DUMP2FILE
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include <errno.h>
#include <ctype.h>
#include "config.h"
#include "stream.h"
#include "demuxer.h"
#include "../cfgparser.h"
#include "network.h"
#include "http.h"
#include "url.h"
#include "asf.h"
#include "rtp.h"
extern int verbose;
extern m_config_t *mconfig;
static struct {
char *mime_type;
int demuxer_type;
} mime_type_table[] = {
// MP3 streaming, some MP3 streaming server answer with audio/mpeg
{ "audio/mpeg", DEMUXER_TYPE_AUDIO },
// MPEG streaming
{ "video/mpeg", DEMUXER_TYPE_MPEG_PS },
// AVI ??? => video/x-msvideo
{ "video/x-msvideo", DEMUXER_TYPE_AVI },
// MOV => video/quicktime
{ "video/quicktime", DEMUXER_TYPE_MOV },
// ASF
{ "audio/x-ms-wax", DEMUXER_TYPE_ASF },
{ "audio/x-ms-wma", DEMUXER_TYPE_ASF },
{ "video/x-ms-asf", DEMUXER_TYPE_ASF },
{ "video/x-ms-afs", DEMUXER_TYPE_ASF },
{ "video/x-ms-wvx", DEMUXER_TYPE_ASF },
{ "video/x-ms-wmv", DEMUXER_TYPE_ASF },
{ "video/x-ms-wma", DEMUXER_TYPE_ASF },
// Playlists
{ "audio/x-scpls", DEMUXER_TYPE_PLAYLIST },
{ "audio/x-mpegurl", DEMUXER_TYPE_PLAYLIST },
{ "audio/x-pls", DEMUXER_TYPE_PLAYLIST }
};
static struct {
char *extension;
int demuxer_type;
} extensions_table[] = {
{ "mpeg", DEMUXER_TYPE_MPEG_PS },
{ "mpg", DEMUXER_TYPE_MPEG_PS },
{ "mpe", DEMUXER_TYPE_MPEG_ES },
{ "avi", DEMUXER_TYPE_AVI },
{ "mov", DEMUXER_TYPE_MOV },
{ "qt", DEMUXER_TYPE_MOV },
{ "asx", DEMUXER_TYPE_ASF },
{ "asf", DEMUXER_TYPE_ASF },
{ "wmv", DEMUXER_TYPE_ASF },
{ "wma", DEMUXER_TYPE_ASF },
{ "viv", DEMUXER_TYPE_VIVO },
{ "rm", DEMUXER_TYPE_REAL },
{ "y4m", DEMUXER_TYPE_Y4M },
{ "mp3", DEMUXER_TYPE_AUDIO },
{ "wav", DEMUXER_TYPE_AUDIO },
{ "pls", DEMUXER_TYPE_PLAYLIST },
{ "m3u", DEMUXER_TYPE_PLAYLIST }
};
streaming_ctrl_t *
streaming_ctrl_new( ) {
streaming_ctrl_t *streaming_ctrl;
streaming_ctrl = (streaming_ctrl_t*)malloc(sizeof(streaming_ctrl_t));
if( streaming_ctrl==NULL ) {
printf("Failed to allocate memory\n");
return NULL;
}
memset( streaming_ctrl, 0, sizeof(streaming_ctrl_t) );
return streaming_ctrl;
}
void
streaming_ctrl_free( streaming_ctrl_t *streaming_ctrl ) {
if( streaming_ctrl==NULL ) return;
if( streaming_ctrl->url ) url_free( streaming_ctrl->url );
if( streaming_ctrl->buffer ) free( streaming_ctrl->buffer );
if( streaming_ctrl->data ) free( streaming_ctrl->data );
free( streaming_ctrl );
}
int
read_rtp_from_server(int fd, char *buffer, int length) {
struct rtpheader rh;
char *data;
int len;
static int got_first = 0;
static unsigned short sequence;
if( buffer==NULL || length<0 ) return -1;
getrtp2(fd, &rh, &data, &len);
if( got_first && rh.b.sequence != (unsigned short)(sequence+1) )
printf("RTP packet sequence error! Expected: %d, received: %d\n",
sequence+1, rh.b.sequence);
got_first = 1;
sequence = rh.b.sequence;
memcpy(buffer, data, len);
return(len);
}
// Connect to a server using a TCP connection
int
connect2Server(char *host, int port) {
int socket_server_fd;
int err, err_len;
int ret;
fd_set set;
struct timeval tv;
struct sockaddr_in server_address;
printf("Connecting to server %s:%d ...\n", host, port );
socket_server_fd = socket(AF_INET, SOCK_STREAM, 0);
if( socket_server_fd==-1 ) {
perror("Failed to create socket");
return -1;
}
if( isalpha(host[0]) ) {
struct hostent *hp;
hp=(struct hostent*)gethostbyname( host );
if( hp==NULL ) {
printf("Counldn't resolve name: %s\n", host);
return -1;
}
memcpy( (void*)&server_address.sin_addr.s_addr, (void*)hp->h_addr, hp->h_length );
} else {
inet_pton(AF_INET, host, &server_address.sin_addr);
}
server_address.sin_family=AF_INET;
server_address.sin_port=htons(port);
// Turn the socket as non blocking so we can timeout on the connection
fcntl( socket_server_fd, F_SETFL, fcntl(socket_server_fd, F_GETFL) | O_NONBLOCK );
if( connect( socket_server_fd, (struct sockaddr*)&server_address, sizeof(server_address) )==-1 ) {
if( errno!=EINPROGRESS ) {
perror("Failed to connect to server");
close(socket_server_fd);
return -1;
}
}
tv.tv_sec = 15; // 15 seconds timeout on connection
tv.tv_usec = 0;
FD_ZERO( &set );
FD_SET( socket_server_fd, &set );
// When the connection will be made, we will have a writable fd
ret = select(socket_server_fd+1, NULL, &set, NULL, &tv);
if( ret<=0 ) {
if( ret<0 ) perror("select failed");
else printf("Connection timeout\n");
return -1;
}
// Turn back the socket as blocking
fcntl( socket_server_fd, F_SETFL, fcntl(socket_server_fd, F_GETFL) & ~O_NONBLOCK );
// Check if there were any error
err_len = sizeof(int);
ret = getsockopt(socket_server_fd,SOL_SOCKET,SO_ERROR,&err,&err_len);
if(ret < 0) {
printf("getsockopt failed : %s\n",strerror(errno));
return -1;
}
if(err > 0) {
printf("Connect error : %s\n",strerror(err));
return -1;
}
return socket_server_fd;
}
URL_t*
check4proxies( URL_t *url ) {
URL_t *url_out = NULL;
if( url==NULL ) return NULL;
url_out = url_new( url->url );
if( !strcasecmp(url->protocol, "http_proxy") ) {
printf("Using HTTP proxy: http://%s:%d\n", url->hostname, url->port );
return url_out;
}
// Check if the http_proxy environment variable is set.
if( !strcasecmp(url->protocol, "http") ) {
char *proxy;
proxy = getenv("http_proxy");
if( proxy!=NULL ) {
// We got a proxy, build the URL to use it
int len;
char *new_url;
URL_t *tmp_url;
URL_t *proxy_url = url_new( proxy );
if( proxy_url==NULL ) {
printf("Invalid proxy setting...Trying without proxy.\n");
return url_out;
}
printf("Using HTTP proxy: %s\n", proxy_url->url );
len = strlen( proxy_url->hostname ) + strlen( url->url ) + 20; // 20 = http_proxy:// + port
new_url = malloc( len+1 );
if( new_url==NULL ) {
printf("Memory allocation failed\n");
return url_out;
}
sprintf( new_url, "http_proxy://%s:%d/%s", proxy_url->hostname, proxy_url->port, url->url );
tmp_url = url_new( new_url );
if( tmp_url==NULL ) {
return url_out;
}
url_free( url_out );
url_out = tmp_url;
free( new_url );
url_free( proxy_url );
}
}
return url_out;
}
int
http_send_request( URL_t *url ) {
HTTP_header_t *http_hdr;
URL_t *server_url;
char str[80];
int fd;
int ret;
int proxy = 0; // Boolean
http_hdr = http_new_header();
if( !strcasecmp(url->protocol, "http_proxy") ) {
proxy = 1;
server_url = url_new( (url->file)+1 );
http_set_uri( http_hdr, server_url->url );
} else {
server_url = url;
http_set_uri( http_hdr, server_url->file );
}
snprintf(str, 80, "Host: %s", server_url->hostname );
http_set_field( http_hdr, str);
http_set_field( http_hdr, "User-Agent: MPlayer");
http_set_field( http_hdr, "Connection: closed");
if( http_build_request( http_hdr )==NULL ) {
return -1;
}
if( proxy ) {
if( url->port==0 ) url->port = 8080; // Default port for the proxy server
fd = connect2Server( url->hostname, url->port );
url_free( server_url );
} else {
if( server_url->port==0 ) server_url->port = 80; // Default port for the web server
fd = connect2Server( server_url->hostname, server_url->port );
}
if( fd<0 ) {
return -1;
}
if( verbose ) {
printf("Request: [%s]\n", http_hdr->buffer );
}
ret = write( fd, http_hdr->buffer, http_hdr->buffer_size );
if( ret!=http_hdr->buffer_size ) {
printf("Error while sending HTTP request: didn't sent all the request\n");
return -1;
}
http_free( http_hdr );
return fd;
}
HTTP_header_t *
http_read_response( int fd ) {
HTTP_header_t *http_hdr;
char response[BUFFER_SIZE];
int i;
http_hdr = http_new_header();
if( http_hdr==NULL ) {
return NULL;
}
do {
i = read( fd, response, BUFFER_SIZE );
if( i<0 ) {
printf("Read failed\n");
http_free( http_hdr );
return NULL;
}
if( i==0 ) {
printf("http_read_response read 0 -ie- EOF\n");
http_free( http_hdr );
return NULL;
}
http_response_append( http_hdr, response, i );
} while( !http_is_header_entire( http_hdr ) );
http_response_parse( http_hdr );
return http_hdr;
}
// By using the protocol, the extension of the file or the content-type
// we might be able to guess the streaming type.
int
autodetectProtocol(streaming_ctrl_t *streaming_ctrl, int *fd_out, int *file_format) {
HTTP_header_t *http_hdr;
unsigned int i;
int fd=-1;
int redirect;
char *extension;
char *content_type;
char *next_url;
URL_t *url = streaming_ctrl->url;
*file_format = DEMUXER_TYPE_UNKNOWN;
do {
*fd_out = -1;
next_url = NULL;
extension = NULL;
content_type = NULL;
redirect = 0;
if( url==NULL ) {
return -1;
}
// Get the extension of the file if present
if( url->file!=NULL ) {
for( i=strlen(url->file) ; i>0 ; i-- ) {
if( url->file[i]=='.' ) {
extension=(url->file)+i+1;
break;
}
}
}
extension=NULL;
if( extension!=NULL ) {
printf("Extension: %s\n", extension );
// Look for the extension in the extensions table
for( i=0 ; i<(sizeof(extensions_table)/sizeof(extensions_table[0])) ; i++ ) {
if( !strcasecmp(extension, extensions_table[i].extension) ) {
*file_format = extensions_table[i].demuxer_type;
return 0;
}
}
}
// Checking for RTSP
if( !strcasecmp(url->protocol, "rtsp") ) {
printf("RTSP protocol not yet implemented!\n");
return -1;
}
// Checking for RTP
if( !strcasecmp(url->protocol, "rtp") ) {
if( url->port==0 ) {
printf("You must enter a port number for RTP streams!\n");
return -1;
}
return 0;
}
// Checking for ASF
if( !strncasecmp(url->protocol, "mms", 3) ) {
*file_format = DEMUXER_TYPE_ASF;
return 0;
}
// HTTP based protocol
if( !strcasecmp(url->protocol, "http") || !strcasecmp(url->protocol, "http_proxy") ) {
fd = http_send_request( url );
if( fd<0 ) {
return -1;
}
http_hdr = http_read_response( fd );
if( http_hdr==NULL ) {
close( fd );
http_free( http_hdr );
return -1;
}
*fd_out=fd;
if( verbose ) {
http_debug_hdr( http_hdr );
}
streaming_ctrl->data = (void*)http_hdr;
// Check if the response is an ICY status_code reason_phrase
if( !strcasecmp(http_hdr->protocol, "ICY") ) {
// Ok, we have detected an mp3 streaming
*file_format = DEMUXER_TYPE_AUDIO;
return 0;
}
switch( http_hdr->status_code ) {
case 200: // OK
// Look if we can use the Content-Type
content_type = http_get_field( http_hdr, "Content-Type" );
if( content_type!=NULL ) {
printf("Content-Type: [%s]\n", content_type );
printf("Content-Length: [%s]\n", http_get_field(http_hdr, "Content-Length") );
// Check in the mime type table for a demuxer type
for( i=0 ; i<(sizeof(mime_type_table)/sizeof(mime_type_table[0])) ; i++ ) {
if( !strcasecmp( content_type, mime_type_table[i].mime_type ) ) {
*file_format = mime_type_table[i].demuxer_type;
return 0;
}
}
// Not found in the mime type table, don't fail,
// we should try raw HTTP
return 0;
}
break;
// Redirect
case 301: // Permanently
case 302: // Temporarily
// TODO: RFC 2616, recommand to detect infinite redirection loops
next_url = http_get_field( http_hdr, "Location" );
if( next_url!=NULL ) {
close( fd );
url_free( url );
streaming_ctrl->url = url = url_new( next_url );
http_free( http_hdr );
redirect = 1;
}
break;
default:
printf("Server returned %d: %s\n", http_hdr->status_code, http_hdr->reason_phrase );
return -1;
}
} else {
printf("Unknown protocol '%s'\n", url->protocol );
return -1;
}
} while( redirect );
return -1;
}
int
streaming_bufferize( streaming_ctrl_t *streaming_ctrl, char *buffer, int size) {
//printf("streaming_bufferize\n");
streaming_ctrl->buffer = (char*)malloc(size);
if( streaming_ctrl->buffer==NULL ) {
printf("Memory allocation failed\n");
return -1;
}
memcpy( streaming_ctrl->buffer, buffer, size );
streaming_ctrl->buffer_size = size;
return size;
}
int
nop_streaming_read( int fd, char *buffer, int size, streaming_ctrl_t *stream_ctrl ) {
int len=0;
//printf("nop_streaming_read\n");
if( stream_ctrl->buffer_size!=0 ) {
int buffer_len = stream_ctrl->buffer_size-stream_ctrl->buffer_pos;
//printf("%d bytes in buffer\n", stream_ctrl->buffer_size);
len = (size<buffer_len)?size:buffer_len;
memcpy( buffer, (stream_ctrl->buffer)+(stream_ctrl->buffer_pos), len );
stream_ctrl->buffer_pos += len;
//printf("buffer_pos = %d\n", stream_ctrl->buffer_pos );
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;
//printf("buffer cleaned\n");
}
//printf("read %d bytes from buffer\n", len );
}
if( len<size ) {
int ret;
ret = read( fd, buffer+len, size-len );
if( ret<0 ) {
printf("nop_streaming_read error : %s\n",strerror(errno));
}
len += ret;
//printf("read %d bytes from network\n", len );
}
return len;
}
int
nop_streaming_seek( int fd, off_t pos, streaming_ctrl_t *stream_ctrl ) {
return -1;
}
int
nop_streaming_start( stream_t *stream ) {
HTTP_header_t *http_hdr = NULL;
int fd;
if( stream==NULL ) return -1;
fd = stream->fd;
if( fd<0 ) {
fd = http_send_request( stream->streaming_ctrl->url );
if( fd<0 ) return -1;
http_hdr = http_read_response( fd );
if( http_hdr==NULL ) return -1;
switch( http_hdr->status_code ) {
case 200: // OK
printf("Content-Type: [%s]\n", http_get_field(http_hdr, "Content-Type") );
printf("Content-Length: [%s]\n", http_get_field(http_hdr, "Content-Length") );
if( http_hdr->body_size>0 ) {
if( streaming_bufferize( stream->streaming_ctrl, http_hdr->body, http_hdr->body_size )<0 ) {
http_free( http_hdr );
return -1;
}
}
break;
default:
printf("Server return %d: %s\n", http_hdr->status_code, http_hdr->reason_phrase );
close( fd );
fd = -1;
}
stream->fd = fd;
} else {
http_hdr = (HTTP_header_t*)stream->streaming_ctrl->data;
if( http_hdr->body_size>0 ) {
if( streaming_bufferize( stream->streaming_ctrl, http_hdr->body, http_hdr->body_size )<0 ) {
http_free( http_hdr );
stream->streaming_ctrl->data = NULL;
return -1;
}
}
}
if( http_hdr ) {
http_free( http_hdr );
stream->streaming_ctrl->data = NULL;
}
stream->streaming_ctrl->streaming_read = nop_streaming_read;
stream->streaming_ctrl->streaming_seek = nop_streaming_seek;
stream->streaming_ctrl->prebuffer_size = 8192; // KBytes
stream->streaming_ctrl->buffering = 1;
stream->streaming_ctrl->status = streaming_playing_e;
return 0;
}
// Start listening on a UDP port. If multicast, join the group.
int
rtp_open_socket( URL_t *url ) {
int socket_server_fd, rxsockbufsz;
int err, err_len;
fd_set set;
struct sockaddr_in server_address;
struct ip_mreq mcast;
struct timeval tv;
printf("Listening for traffic on %s:%d ...\n", url->hostname, url->port );
socket_server_fd = socket(AF_INET, SOCK_DGRAM, 0);
// fcntl( socket_server_fd, F_SETFL, fcntl(socket_server_fd, F_GETFL) | O_NONBLOCK );
if( socket_server_fd==-1 ) {
perror("Failed to create socket");
return -1;
}
if( isalpha(url->hostname[0]) ) {
struct hostent *hp =(struct hostent*)gethostbyname( url->hostname );
if( hp==NULL ) {
printf("Counldn't resolve name: %s\n", url->hostname);
return -1;
}
memcpy( (void*)&server_address.sin_addr.s_addr, (void*)hp->h_addr, hp->h_length );
} else {
inet_pton(AF_INET, url->hostname, &server_address.sin_addr);
}
server_address.sin_family=AF_INET;
server_address.sin_port=htons(url->port);
if( bind( socket_server_fd, (struct sockaddr*)&server_address, sizeof(server_address) )==-1 ) {
if( errno!=EINPROGRESS ) {
perror("Failed to connect to server");
close(socket_server_fd);
return -1;
}
}
// Increase the socket rx buffer size to maximum -- this is UDP
rxsockbufsz = 240 * 1024;
if( setsockopt( socket_server_fd, SOL_SOCKET, SO_RCVBUF, &rxsockbufsz, sizeof(rxsockbufsz))) {
perror("Couldn't set receive socket buffer size");
}
if((ntohl(server_address.sin_addr.s_addr) >> 28) == 0xe) {
mcast.imr_multiaddr.s_addr = server_address.sin_addr.s_addr;
//mcast.imr_interface.s_addr = inet_addr("10.1.1.2");
mcast.imr_interface.s_addr = 0;
if( setsockopt( socket_server_fd, IPPROTO_IP, IP_ADD_MEMBERSHIP, &mcast, sizeof(mcast))) {
perror("IP_ADD_MEMBERSHIP failed (do you have multicasting enabled in your kernel?)");
return -1;
}
}
tv.tv_sec = 0;
tv.tv_usec = (1 * 1000000); // 1 second timeout
FD_ZERO( &set );
FD_SET( socket_server_fd, &set );
if( select(socket_server_fd+1, &set, NULL, NULL, &tv)>0 ) {
//if( select(socket_server_fd+1, &set, NULL, NULL, NULL)>0 ) {
err_len = sizeof( err );
getsockopt( socket_server_fd, SOL_SOCKET, SO_ERROR, &err, &err_len );
if( err ) {
printf("Timeout! No data from host %s\n", url->hostname );
printf("Socket error: %d\n", err );
close(socket_server_fd);
return -1;
}
}
return socket_server_fd;
}
int
rtp_streaming_read( int fd, char *buffer, int size, streaming_ctrl_t *streaming_ctrl ) {
return read_rtp_from_server( fd, buffer, size );
}
int
rtp_streaming_start( stream_t *stream ) {
streaming_ctrl_t *streaming_ctrl;
int fd;
if( stream==NULL ) return -1;
streaming_ctrl = stream->streaming_ctrl;
fd = stream->fd;
if( fd<0 ) {
fd = rtp_open_socket( (streaming_ctrl->url) );
if( fd<0 ) return -1;
stream->fd = fd;
}
streaming_ctrl->streaming_read = rtp_streaming_read;
streaming_ctrl->streaming_seek = nop_streaming_seek;
streaming_ctrl->prebuffer_size = 4096; // KBytes
streaming_ctrl->buffering = 0;
streaming_ctrl->status = streaming_playing_e;
return 0;
}
int
streaming_start(stream_t *stream, int *demuxer_type, URL_t *url) {
int ret;
if( stream==NULL ) return -1;
stream->streaming_ctrl = streaming_ctrl_new();
if( stream->streaming_ctrl==NULL ) {
return -1;
}
stream->streaming_ctrl->url = check4proxies( url );
ret = autodetectProtocol( stream->streaming_ctrl, &stream->fd, demuxer_type );
if( ret<0 ) {
return -1;
}
ret = -1;
// For RTP streams, we usually don't know the stream type until we open it.
if( !strcasecmp( stream->streaming_ctrl->url->protocol, "rtp")) {
if(stream->fd >= 0) {
if(close(stream->fd) < 0)
printf("streaming_start : Closing socket %d failed %s\n",stream->fd,strerror(errno));
}
stream->fd = -1;
ret = rtp_streaming_start( stream );
} else
// For connection-oriented streams, we can usually determine the streaming type.
switch( *demuxer_type ) {
case DEMUXER_TYPE_ASF:
// Send the appropriate HTTP request
// Need to filter the network stream.
// ASF raw stream is encapsulated.
ret = asf_streaming_start( stream );
if( ret<0 ) {
printf("asf_streaming_start failed\n");
}
break;
case DEMUXER_TYPE_MPEG_ES:
case DEMUXER_TYPE_MPEG_PS:
case DEMUXER_TYPE_AVI:
case DEMUXER_TYPE_MOV:
case DEMUXER_TYPE_VIVO:
case DEMUXER_TYPE_FLI:
case DEMUXER_TYPE_REAL:
case DEMUXER_TYPE_Y4M:
case DEMUXER_TYPE_FILM:
case DEMUXER_TYPE_ROQ:
case DEMUXER_TYPE_AUDIO:
case DEMUXER_TYPE_PLAYLIST:
case DEMUXER_TYPE_UNKNOWN:
// Generic start, doesn't need to filter
// the network stream, it's a raw stream
ret = nop_streaming_start( stream );
if( ret<0 ) {
printf("nop_streaming_start failed\n");
}
if((*demuxer_type) == DEMUXER_TYPE_PLAYLIST)
stream->type = STREAMTYPE_PLAYLIST;
break;
default:
printf("Unable to detect the streaming type\n");
ret = -1;
}
if( ret<0 ) {
streaming_ctrl_free( stream->streaming_ctrl );
stream->streaming_ctrl = NULL;
} else if( stream->streaming_ctrl->buffering ) {
int cache_size = 0;
int ret, val;
ret = m_config_is_option_set(mconfig,"cache");
if(ret < 0) {
printf("Unable to know if cache size option was set\n");
} else if(!ret) {
// cache option not set, will use the our computed value.
// buffer in KBytes, *5 because the prefill is 20% of the buffer.
val = (stream->streaming_ctrl->prebuffer_size/1024)*5;
if( val<16 ) val = 16; // 16KBytes min buffer
if( m_config_set_int( mconfig, "cache", val )<0 ) {
printf("Unable to set the cache size option\n");
} else {
cache_size = val;
}
} else {
// cache option set, will use the given one.
val = m_config_get_int( mconfig, "cache", NULL );
if( val<0 ) {
printf("Unable to retrieve the cache option value\n");
} else {
cache_size = val;
}
}
printf("Cache size set to %d KBytes\n", cache_size );
}
return ret;
}
int
streaming_stop( stream_t *stream ) {
stream->streaming_ctrl->status = streaming_stopped_e;
return 0;
}
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