diff options
Diffstat (limited to 'src/dnscache.c')
| -rw-r--r-- | src/dnscache.c | 12 |
1 files changed, 11 insertions, 1 deletions
diff --git a/src/dnscache.c b/src/dnscache.c index dc3fd87..46b5747 100644 --- a/src/dnscache.c +++ b/src/dnscache.c @@ -1,4 +1,4 @@ -/* $Id: dnscache.c,v 1.7 2000-10-23 21:42:31 rjkaes Exp $ +/* $Id: dnscache.c,v 1.8 2001-05-23 18:01:23 rjkaes Exp $ * * This is a caching DNS system. When a host name is needed we look it up here * and see if there is already an answer for it. The domains are placed in a @@ -25,6 +25,7 @@ #endif #include <sys/types.h> +#include <assert.h> #include <ctype.h> #include <unistd.h> @@ -53,6 +54,9 @@ static int dns_lookup(struct in_addr *addr, char *domain) { struct dnscache_s *ptr; + assert(addr != NULL); + assert(domain != NULL); + if (TE_ISERROR(ternary_search(dns_tree, domain, (void *)&ptr))) return -1; @@ -68,6 +72,9 @@ static int dns_insert(struct in_addr *addr, char *domain) { struct dnscache_s *newptr; + assert(addr != NULL); + assert(domain != NULL); + if (!(newptr = malloc(sizeof(struct dnscache_s)))) { return -1; } @@ -85,6 +92,9 @@ int dnscache(struct in_addr *addr, char *domain) { struct hostent *resolv; + assert(addr != NULL); + assert(domain != NULL); + if (inet_aton(domain, (struct in_addr *) addr) != 0) return 0; |