firedns_dnsbl_lookup(3)firedns_dnsbl_lookup(3)NAMEfiredns_dnsbl_lookup - Create a query to look up an IP in a DNS-based
blacklist
SYNOPSIS
#include <firedns.h>
-lfiredns
int firedns_dnsbl_lookup(const struct in_addr *ip, const char * const
name)
DESCRIPTIONfiredns_dnsbl_lookup() creates and sends a request to resolve the TXT
record of the entry of ip in the DNS-based blacklist name. It returns
a file descriptor that should be select(2)'ed upon (read set). When
the file descriptor shows ready for reading call firedns_getresult(3)
to retrieve the results. The result will be a char * with the message
from the listing server, or NULL if the IP address is not listed.
RETURN VALUE
Returns an integer file descriptor that can be used the same as any
other file descriptor. Returns -1 on error.
AUTHOR
Ian Gulliver <ian@penguinhosting.net>
SEE ALSOlibfiredns(3), firedns_getresult(3), select(2)
2002-03-31 firedns_dnsbl_lookup(3)