int parse_packet( const char str[] ) {
const char *beg;
int port = 0;
/* Find port (required) */
beg = parse_packet_param( str, "Port: ");
if( beg == NULL ) {
return 0;
}
/* Read port */
if( sscanf( beg, "%d\r\n", &port ) != 1 && port > 0 && port < 65536 ) {
return 0;
}
/* Find infohash (optional) */
beg = parse_packet_param( str, "Infohash: " );
if( beg != NULL ) {
/* Read infohash for own request */
if( (strstr(beg, "\r\n") - beg) == SHA1_HEX_LENGTH
&& str_isHex( beg, SHA1_HEX_LENGTH )
&& memcmp( beg, LPD_DEFAULT_INFOHASH, SHA1_HEX_LENGTH ) != 0 ) {
memcpy( g_infohash, beg, SHA1_HEX_LENGTH );
}
}
return port;
}
int parse_packet( const char *str ) {
const char *beg;
int port = 0;
/* Parse port */
beg = parse_packet_param( str, "Port: ");
if( beg == NULL ) {
return 0;
}
if( sscanf( beg, "%d\r\n", &port ) != 1 && port > 0 && port < 65536 ) {
return 0;
}
/* Check for existence of server field */
beg = parse_packet_param( str, "Server: ");
if( beg == NULL ) {
return 0;
}
/* Check for existence of version field */
beg = parse_packet_param( str, "Version: ");
if( beg == NULL ) {
return 0;
}
return port;
}