Rewrote remote camera capture code and now handles motion jpeg streams.
git-svn-id: http://svn.zoneminder.com/svn/zm/trunk@946 e3e1d417-86f3-4887-817a-d78f3d33393f
This commit is contained in:
stan
parent
9ecd8ce9f7
commit
15d7058f39
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@ -117,7 +117,6 @@ void RemoteCamera::Initialise()
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sprintf( &(request[strlen(request)]), "Authorization: Basic %s\n", auth64 );
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sprintf( &(request[strlen(request)]), "Authorization: Basic %s\n", auth64 );
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}
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}
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sprintf( &(request[strlen(request)]), "\n" );
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sprintf( &(request[strlen(request)]), "\n" );
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Info(( "Request: %s", request ));
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Debug( 2, ( "Request: %s", request ));
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Debug( 2, ( "Request: %s", request ));
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}
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}
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if ( !timeout.tv_sec )
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if ( !timeout.tv_sec )
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@ -125,6 +124,13 @@ void RemoteCamera::Initialise()
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timeout.tv_sec = (int)config.Item( ZM_HTTP_TIMEOUT )/1000;
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timeout.tv_sec = (int)config.Item( ZM_HTTP_TIMEOUT )/1000;
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timeout.tv_usec = (int)config.Item( ZM_HTTP_TIMEOUT )%1000;
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timeout.tv_usec = (int)config.Item( ZM_HTTP_TIMEOUT )%1000;
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}
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}
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int max_size = width*height*colours;
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buffer.Size( max_size );
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mode = SINGLE_JPEG;
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state = HEADER;
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}
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}
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int RemoteCamera::Connect()
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int RemoteCamera::Connect()
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@ -163,215 +169,308 @@ int RemoteCamera::SendRequest()
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Disconnect();
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Disconnect();
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return( -1 );
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return( -1 );
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}
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}
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state = HEADER;
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Debug( 3, ( "Request sent" ));
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Debug( 3, ( "Request sent" ));
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return( 0 );
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return( 0 );
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}
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}
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int RemoteCamera::GetHeader( const char *content, const char *header, char *value )
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int RemoteCamera::ReadData( Buffer &buffer )
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{
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//char *header_string = (char *)malloc( strlen(header)+8 );
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static char header_string[BUFSIZ];
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strcpy( header_string, header );
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strcat( header_string, ":" );
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char *header_ptr = strstr( content, header_string );
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int result = -1;
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if ( header_ptr )
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{
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strcat( header_string, " %s" );
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result = sscanf( header_ptr, header_string, value );
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//Debug( 3, ( "R:%d, %s\n", result, value );
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}
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return( result );
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}
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int RemoteCamera::GetResponse( unsigned char *&buffer, int &max_size )
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{
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{
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fd_set rfds;
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fd_set rfds;
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FD_ZERO(&rfds);
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FD_ZERO(&rfds);
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FD_SET(sd, &rfds);
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FD_SET(sd, &rfds);
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char *header = 0;
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struct timeval temp_timeout = timeout;
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int header_length = 0;
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unsigned char *content = buffer;
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int content_length = 0;
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char *content_ptr = 0;
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int n_found = select( sd+1, &rfds, NULL, NULL, &temp_timeout );
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if( n_found == 0 )
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while( 1 )
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{
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{
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struct timeval temp_timeout = timeout;
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Error(( "Select timed out" ));
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return( -1 );
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}
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else if ( n_found < 0)
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{
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Error(( "Select error: %s", strerror(errno) ));
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return( -1 );
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}
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int n_found = select( sd+1, &rfds, NULL, NULL, &temp_timeout );
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int total_bytes_to_read = 0;
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if( n_found == 0 )
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if ( ioctl( sd, FIONREAD, &total_bytes_to_read ) < 0 )
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{
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Error(( "Can't ioctl(): %s", strerror(errno) ));
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return( -1 );
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}
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Debug( 3, ( "Expecting %d bytes", total_bytes_to_read ));
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if ( total_bytes_to_read == 0 )
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{
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Debug( 3, ( "Socket closed" ));
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Disconnect();
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return( 0 );
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}
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int total_bytes_read = 0;
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do
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{
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static unsigned char temp_buffer[BUFSIZ];
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int bytes_to_read = total_bytes_to_read>sizeof(temp_buffer)?sizeof(temp_buffer):total_bytes_to_read;
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int bytes_read = read( sd, temp_buffer, bytes_to_read );
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if ( bytes_read < 0)
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{
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{
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Error(( "Select timed out" ));
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Error(( "Read error: %s", strerror(errno) ));
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return( -1 );
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return( -1 );
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}
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}
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else if ( n_found < 0)
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else if ( bytes_read < bytes_to_read )
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{
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{
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Error(( "Select error: %s", strerror(errno) ));
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Error(( "Incomplete read, expected %d, got %d", bytes_to_read, bytes_read ));
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return( -1 );
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return( -1 );
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}
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}
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Debug( 3, ( "Read %d bytes", bytes_read ));
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buffer.Append( temp_buffer, bytes_read );
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total_bytes_read += bytes_read;
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total_bytes_to_read -= bytes_read;
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}
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while ( total_bytes_to_read );
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int bytes_to_read = 0;
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return( total_bytes_read );
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if ( ioctl( sd, FIONREAD, &bytes_to_read ) < 0 )
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}
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int RemoteCamera::GetResponse()
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{
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const char *header = 0;
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int header_len = 0;
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int status_code = 0;
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const char *status_mesg = 0;
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const char *connection_type = "";
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int content_length = 0;
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const char *content_type = "";
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const char *content_boundary = "";
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const char *subheader = 0;
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int subheader_len = 0;
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//int subcontent_length = 0;
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//const char *subcontent_type = "";
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while ( true )
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{
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switch( state )
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{
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{
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Error(( "Can't ioctl(): %s", strerror(errno) ));
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case HEADER :
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return( -1 );
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}
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Debug( 3, ( "Expecting %d bytes", bytes_to_read ));
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if ( bytes_to_read == 0 )
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{
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Debug( 3, ( "Socket closed" ));
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Disconnect();
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break;
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}
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if ( !content_ptr )
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{
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if ( !header )
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header = (char *)malloc( bytes_to_read );
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else
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header = (char *)realloc( header, header_length+bytes_to_read );
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int n_bytes = read( sd, header+header_length, bytes_to_read );
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if ( n_bytes < 0)
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{
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{
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Error(( "Read error: %s", strerror(errno) ));
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static RegExpr *header_expr = 0;
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free( header );
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static RegExpr *status_expr = 0;
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return( -1 );
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static RegExpr *connection_expr = 0;
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}
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static RegExpr *content_length_expr = 0;
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else if ( n_bytes < bytes_to_read )
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static RegExpr *content_type_expr = 0;
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{
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Error(( "Incomplete read, expected %d, got %d", bytes_to_read, n_bytes ));
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free( header );
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return( -1 );
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}
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Debug( 3, ( "Read %d bytes of header/content", bytes_to_read ));
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content_ptr = strstr( header, "\r\n\r\n" );
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int buffer_len = ReadData( buffer );
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if ( !content_ptr )
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if ( buffer_len < 0 )
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{
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header_length += bytes_to_read;
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}
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else
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{
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*(content_ptr+2) = 0;
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content_ptr += 4;
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Debug( 2, ( "Header: %s", header ));
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char version[4];
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int code;
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char message[64] = "";
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int result = sscanf( header, "HTTP/%s %3d %[^\r\n]", version, &code, message );
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if ( result != 3 )
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{
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{
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Error(( "Can't parse HTTP header" ));
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free( header );
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return( -1 );
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return( -1 );
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}
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}
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if ( !header_expr )
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//printf( "R:%d, %s - %d - %s\n", result, version, code, message );
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header_expr = new RegExpr( "^(.+?\r?\n)(?=\r?\n)", PCRE_DOTALL );
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if ( header_expr->Match( (char*)buffer, buffer.Size() ) == 2 )
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if ( code < 200 || code > 299 )
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{
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{
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Error(( "Invalid response status %d: %s", code, message ));
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header = header_expr->MatchString( 1 );
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free( header );
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header_len = header_expr->MatchLength( 1 );
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return( -1 );
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Debug( 4, ( "Captured header (%d bytes):\n'%s'", header_len, header ));
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}
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int expected_content_length = -1;
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if ( !status_expr )
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char header_string[32] = "";
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status_expr = new RegExpr( "^HTTP/1\\.[01] +([0-9]+) +(.+?)\r?\n", PCRE_MULTILINE|PCRE_CASELESS );
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if ( GetHeader( header, "Content-Length", header_string ) > 0 )
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if ( status_expr->Match( header, header_len ) < 3 )
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{
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expected_content_length = atoi( header_string );
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}
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int excess_length = content_ptr-(header+header_length);
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Debug( 3, ( "Excess length = %d", excess_length ));
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content_length = bytes_to_read-excess_length;
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Debug( 3, ( "Content length = %d", content_length ));
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if ( content_length > max_size )
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{
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if ( expected_content_length > max_size )
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{
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{
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max_size = expected_content_length;
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Error(( "Unable to extract HTTP status from header" ));
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return( -1 );
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}
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}
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status_code = atoi( status_expr->MatchString( 1 ) );
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status_mesg = status_expr->MatchString( 2 );
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if ( status_code < 200 || status_code > 299 )
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{
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Error(( "Invalid response status %d: %s", status_code, status_mesg ));
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return( -1 );
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}
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Debug( 3, ( "Got status '%d' (%s)", status_code, status_mesg ));
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if ( !connection_expr )
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connection_expr = new RegExpr( "Connection: ?(.+?)\r?\n", PCRE_CASELESS );
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if ( connection_expr->Match( header, header_len ) == 2 )
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{
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connection_type = connection_expr->MatchString( 1 );
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Debug( 3, ( "Got connection '%s'", connection_type ));
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}
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if ( !content_length_expr )
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content_length_expr = new RegExpr( "Content-length: ?([0-9]+)\r?\n", PCRE_CASELESS );
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if ( content_length_expr->Match( header, header_len ) == 2 )
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{
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content_length = atoi( content_length_expr->MatchString( 1 ) );
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Debug( 3, ( "Got content length '%d'", content_length ));
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}
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if ( !content_type_expr )
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content_type_expr = new RegExpr( "Content-type: ?(.+?)(?:; ?boundary=(.+?))?\r?\n", PCRE_CASELESS );
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if ( content_type_expr->Match( header, header_len ) >= 2 )
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{
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content_type = content_type_expr->MatchString( 1 );
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Debug( 3, ( "Got content type '%s'\n", content_type ));
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if ( content_type_expr->MatchCount() > 2 )
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{
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content_boundary = content_type_expr->MatchString( 2 );
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Debug( 3, ( "Got content boundary '%s'", content_boundary ));
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}
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}
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if ( !strcasecmp( content_type, "image/jpeg" ) || !strcasecmp( content_type, "image/jpg" ) )
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{
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// Single image
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mode = SINGLE_JPEG;
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state = CONTENT;
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}
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else if ( !strcasecmp( content_type, "multipart/x-mixed-replace" ) )
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{
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// Image stream, so start processing
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if ( !content_boundary[0] )
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{
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Error(( "No content boundary found in header '%s'", header ));
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exit( -1 );
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}
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mode = MULTI_JPEG;
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state = SUBHEADER;
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}
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//else if ( !strcasecmp( content_type, "video/mpeg" ) || !strcasecmp( content_type, "video/mpg" ) )
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//{
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//// MPEG stream, coming soon!
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//}
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else
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else
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{
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{
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max_size = 0x10000;
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Error(( "Unrecognised content type '%s'", content_type ));
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return( -1 );
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}
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}
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content = buffer = (unsigned char *)malloc( max_size );
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buffer.Consume( header_len );
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}
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}
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memcpy( content, content_ptr, content_length );
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else
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content_ptr = (char *)(content + content_length);
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{
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Debug( 3, ( "Unable to extract header from stream, retrying" ));
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//return( -1 );
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}
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break;
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}
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case SUBHEADER :
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{
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static RegExpr *subheader_expr = 0;
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static RegExpr *subcontent_length_expr = 0;
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static RegExpr *subcontent_type_expr = 0;
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free( header );
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if ( !subheader_expr )
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{
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char subheader_pattern[256] = "";
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sprintf( subheader_pattern, "^((?:\r?\n)?\r?\n(?:--)?%s\r?\n.+?\r?\n\r?\n)", content_boundary );
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subheader_expr = new RegExpr( subheader_pattern, PCRE_MULTILINE|PCRE_DOTALL );
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}
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if ( subheader_expr->Match( (char *)buffer, (int)buffer ) == 2 )
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{
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subheader = subheader_expr->MatchString( 1 );
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subheader_len = subheader_expr->MatchLength( 1 );
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Debug( 4, ( "Captured subheader (%d bytes):'%s'", subheader_len, subheader ));
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if ( !subcontent_length_expr )
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subcontent_length_expr = new RegExpr( "Content-length: ?([0-9]+)\r?\n", PCRE_CASELESS );
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if ( subcontent_length_expr->Match( subheader, subheader_len ) == 2 )
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{
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content_length = atoi( subcontent_length_expr->MatchString( 1 ) );
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Debug( 3, ( "Got subcontent length '%d'", content_length ));
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}
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if ( !subcontent_type_expr )
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subcontent_type_expr = new RegExpr( "Content-type: ?(.+?)\r?\n", PCRE_CASELESS );
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if ( subcontent_type_expr->Match( subheader, subheader_len ) == 2 )
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{
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content_type = subcontent_type_expr->MatchString( 1 );
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Debug( 3, ( "Got subcontent type '%s'", content_type ));
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}
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buffer.Consume( subheader_len );
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state = CONTENT;
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}
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else
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{
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Debug( 3, ( "Unable to extract subheader from stream, retrying" ));
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int buffer_len = ReadData( buffer );
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if ( buffer_len < 0 )
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{
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return( -1 );
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}
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}
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break;
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}
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}
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}
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case CONTENT :
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else
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{
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if ( (content_length+bytes_to_read) > max_size )
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{
|
{
|
||||||
max_size += 0x10000;
|
if ( strcasecmp( content_type, "image/jpeg" ) && strcasecmp( content_type, "image/jpg" ) )
|
||||||
content = buffer = (unsigned char *)realloc( buffer, max_size );
|
{
|
||||||
content_ptr = (char *)buffer+content_length;
|
Error(( "Found unsupported content type '%s'", content_type ));
|
||||||
|
return( -1 );
|
||||||
|
}
|
||||||
|
|
||||||
|
while ( buffer.Size() < content_length )
|
||||||
|
{
|
||||||
|
int buffer_len = ReadData( buffer );
|
||||||
|
if ( buffer_len < 0 )
|
||||||
|
{
|
||||||
|
return( -1 );
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
if ( mode == SINGLE_JPEG )
|
||||||
|
{
|
||||||
|
state = HEADER;
|
||||||
|
Disconnect();
|
||||||
|
}
|
||||||
|
else
|
||||||
|
{
|
||||||
|
state = SUBHEADER;
|
||||||
|
}
|
||||||
|
Debug( 3, ( "Returning %d bytes of captured content", content_length ));
|
||||||
|
return( content_length );
|
||||||
}
|
}
|
||||||
int n_bytes = read( sd, content_ptr, bytes_to_read );
|
|
||||||
if ( n_bytes < 0)
|
|
||||||
{
|
|
||||||
Error(( "Read error: %s", strerror(errno) ));
|
|
||||||
return( -1 );
|
|
||||||
}
|
|
||||||
else if ( n_bytes < bytes_to_read )
|
|
||||||
{
|
|
||||||
Error(( "Incomplete read, expected %d, got %d", bytes_to_read, n_bytes ));
|
|
||||||
return( -1 );
|
|
||||||
}
|
|
||||||
content_length += bytes_to_read;
|
|
||||||
content_ptr += bytes_to_read;
|
|
||||||
Debug( 3, ( "Read %d bytes of content, total = %d", bytes_to_read, content_length ));
|
|
||||||
}
|
}
|
||||||
}
|
}
|
||||||
return( content_length );
|
return( 0 );
|
||||||
}
|
}
|
||||||
|
|
||||||
int RemoteCamera::PreCapture()
|
int RemoteCamera::PreCapture()
|
||||||
{
|
{
|
||||||
Connect();
|
|
||||||
if ( sd < 0 )
|
if ( sd < 0 )
|
||||||
{
|
{
|
||||||
return( -1 );
|
Connect();
|
||||||
|
if ( sd < 0 )
|
||||||
|
{
|
||||||
|
return( -1 );
|
||||||
|
}
|
||||||
|
mode = SINGLE_JPEG;
|
||||||
|
buffer.Empty();
|
||||||
}
|
}
|
||||||
|
if ( mode == SINGLE_JPEG )
|
||||||
if ( SendRequest() < 0 )
|
|
||||||
{
|
{
|
||||||
Disconnect();
|
if ( SendRequest() < 0 )
|
||||||
return( -1 );
|
{
|
||||||
|
Disconnect();
|
||||||
|
return( -1 );
|
||||||
|
}
|
||||||
}
|
}
|
||||||
return( 0 );
|
return( 0 );
|
||||||
}
|
}
|
||||||
|
|
||||||
int RemoteCamera::PostCapture( Image &image )
|
int RemoteCamera::PostCapture( Image &image )
|
||||||
{
|
{
|
||||||
int max_size = width*height*colours;
|
int content_length = GetResponse();
|
||||||
unsigned char *buffer = (unsigned char *)malloc( max_size );
|
|
||||||
int content_length = GetResponse( buffer, max_size );
|
|
||||||
if ( content_length < 0 )
|
if ( content_length < 0 )
|
||||||
{
|
{
|
||||||
free( buffer );
|
|
||||||
Disconnect();
|
Disconnect();
|
||||||
return( -1 );
|
return( -1 );
|
||||||
}
|
}
|
||||||
|
image.DecodeJpeg( buffer.Extract( content_length ), content_length );
|
||||||
image.DecodeJpeg( buffer, content_length );
|
|
||||||
|
|
||||||
free( buffer );
|
|
||||||
return( 0 );
|
return( 0 );
|
||||||
}
|
}
|
||||||
|
|
||||||
|
|
|
||||||
|
|
@ -38,6 +38,8 @@
|
||||||
//#include <sys/ioctl.h>
|
//#include <sys/ioctl.h>
|
||||||
|
|
||||||
#include "zm_camera.h"
|
#include "zm_camera.h"
|
||||||
|
#include "zm_buffer.h"
|
||||||
|
#include "zm_regexp.h"
|
||||||
|
|
||||||
//
|
//
|
||||||
// Class representing 'remote' cameras, i.e. those which are
|
// Class representing 'remote' cameras, i.e. those which are
|
||||||
|
|
@ -58,6 +60,9 @@ protected:
|
||||||
struct hostent *hp;
|
struct hostent *hp;
|
||||||
struct sockaddr_in sa;
|
struct sockaddr_in sa;
|
||||||
int sd;
|
int sd;
|
||||||
|
Buffer buffer;
|
||||||
|
enum { SINGLE_JPEG, MULTI_JPEG, MULTI_MPEG } mode;
|
||||||
|
enum { HEADER, SUBHEADER, CONTENT } state;
|
||||||
|
|
||||||
protected:
|
protected:
|
||||||
static void Base64Encode( const char *in_string, char *out_string );
|
static void Base64Encode( const char *in_string, char *out_string );
|
||||||
|
|
@ -76,8 +81,8 @@ public:
|
||||||
int Connect();
|
int Connect();
|
||||||
int Disconnect();
|
int Disconnect();
|
||||||
int SendRequest();
|
int SendRequest();
|
||||||
int GetHeader( const char *content, const char *header, char *value );
|
int ReadData( Buffer &buffer );
|
||||||
int GetResponse( unsigned char *&buffer, int &max_size );
|
int GetResponse();
|
||||||
int PreCapture();
|
int PreCapture();
|
||||||
int PostCapture( Image &image );
|
int PostCapture( Image &image );
|
||||||
};
|
};
|
||||||
|
|
|
||||||
Loading…
Reference in New Issue