diff options
Diffstat (limited to 'src/dnscache.c')
| -rw-r--r-- | src/dnscache.c | 14 |
1 files changed, 8 insertions, 6 deletions
diff --git a/src/dnscache.c b/src/dnscache.c index a078773..27f5136 100644 --- a/src/dnscache.c +++ b/src/dnscache.c @@ -1,4 +1,4 @@ -/* $Id: dnscache.c,v 1.12 2001-09-06 21:53:16 rjkaes Exp $ +/* $Id: dnscache.c,v 1.13 2001-09-07 00:40:34 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 @@ -43,7 +43,7 @@ static pthread_mutex_t mutex = PTHREAD_MUTEX_INITIALIZER; #define UNLOCK() pthread_mutex_unlock(&mutex); #define DNSEXPIRE (5 * 60) -#define DNS_INSERT_LIMIT 5 +#define DNS_INSERT_LIMIT 10000 /* free the memory after inserts */ struct dnscache_s { struct in_addr ipaddr; @@ -80,8 +80,6 @@ static int dns_insert(struct in_addr *addr, char *domain) assert(addr != NULL); assert(domain != NULL); - DEBUG2("Inserting [%s] into DNS cache", domain); - if (!(newptr = malloc(sizeof(struct dnscache_s)))) { return -1; } @@ -89,11 +87,15 @@ static int dns_insert(struct in_addr *addr, char *domain) memcpy(&newptr->ipaddr, addr, sizeof(struct in_addr)); newptr->expire = time(NULL); + DEBUG2("Inserting [%s] into DNS cache", domain); + if (TE_ISERROR(ternary_replace(dns_tree, domain, newptr))) { safefree(newptr); return -1; } + DEBUG2("Finished inserting [%s] into DNS cache", domain); + return 0; } @@ -105,7 +107,7 @@ int dnscache(struct in_addr *addr, char *domain) assert(domain != NULL); LOCK(); - + /* If the DNS tree doesn't exist, build a new one */ if (dns_tree < 0) { dns_tree = ternary_new(); @@ -136,7 +138,7 @@ int dnscache(struct in_addr *addr, char *domain) dns_insertions++; if (dns_insertions > DNS_INSERT_LIMIT) { log_message(LOG_NOTICE, "DNS Insertion limit, rebuilding cache."); - ternary_destroy(dns_tree, NULL); + ternary_destroy(dns_tree, free); dns_tree = ternary_new(); dns_insertions = 0; } |