void dns_handle_new_query(dns_request_t *m)
{
//struct in_addr in;
int retval = 0; /* modified by CMC from retval=-1 2002/12/6 */
if( m->message.question[0].type == A || m->message.question[0].type == AAA){
/* added by CMC to deny name 2002/11/19 */
if ( deny_lookup_name( m->cname ) )
{
debug("%s --> blocked.\n", m->cname);
openlog("URL Filter", 0, 0);
syslog(0, "URL access to %s is blocked\n", m->cname);
closelog();
dns_construct_error_reply(m);
dns_write_packet( dns_sock, m->src_addr, m->src_port, m );
return;
}
/* standard query */
retval = cache_lookup_name( m->cname, m->ip );
}else if( m->message.question[0].type == PTR ){
/* reverse lookup */
retval = cache_lookup_ip( m->ip, m->cname );
}
debug(".......... %s ---- %s\n", m->cname, m->ip );
switch( retval )
{
case 0:
if( is_connected() ){
debug("Adding to list-> id: %d\n", m->message.header.id);
dns_request_list = dns_list_add( dns_request_list, m );
/* relay the query untouched */
forward_dns_query( dns_request_list, m ); /* modified by CMC 8/3/2001 */
}else{
debug("Not connected **\n");
dns_construct_error_reply(m);
dns_write_packet( dns_sock, m->src_addr, m->src_port, m );
}
break;
case 1:
dns_construct_reply( m );
dns_write_packet( dns_sock, m->src_addr, m->src_port, m );
debug("Cache hit\n");
break;
default:
debug("Unknown query type: %d\n", m->message.question[0].type );
debug("CMC: Here is un-reachable code! (2002/12/6)\n");
}
}
void dns_handle_new_query(dns_request_t *m)
{
struct in_addr in;
int retval = -1;
if( m->message.question[0].type == A || m->message.question[0].type == AAA){
/* standard query */
retval = cache_lookup_name( m->cname, m->ip );
}else if( m->message.question[0].type == PTR ){
/* reverse lookup */
retval = cache_lookup_ip( m->ip, m->cname );
}
debug(".......... %s ---- %s\n", m->cname, m->ip );
switch( retval )
{
case 0:
if( is_connected() ){
debug("Adding to list-> id: %d\n", m->message.header.id);
dns_request_list = dns_list_add( dns_request_list, m );
/*!!! relay the query untouched */
inet_aton( config.name_server[0], &in );
debug("Sent Request To %s\n",config.name_server[0]);
dns_write_packet( dns_sock, in, PORT, m );
}else{
debug("Not connected **\n");
dns_construct_error_reply(m);
dns_write_packet( dns_sock, m->src_addr, m->src_port, m );
}
break;
case 1:
dns_construct_reply( m );
dns_write_packet( dns_sock, m->src_addr, m->src_port, m );
debug("Cache hit\n");
break;
default:
debug("Unknown query type: %d\n", m->message.question[0].type );
}
}
