(a_lookup): Make name buffer big enough to hold eventual CNAME expansions.

git-svn-id: file:///svnroot/mailfromd/trunk@1501 7a8a7f39-df28-0410-adc6-e0d955640f24

1 files changed, 5 insertions, 4 deletions

diff --git a/src/dnsbase.c b/src/dnsbase.c
index 7290fc46..777ca7ee 100644
--- a/src/dnsbase.c
+++ b/src/dnsbase.c
@@ -603,30 +603,31 @@ dns_resolve_hostname(const char *host, char *answer, size_t answer_size,
 dns_status
 a_lookup(const char *host,
 	 GACOPYZ_UINT32_T *ipbuf, size_t ipbsize, size_t *ipcount,
 	 unsigned long *ttl, char *answer, size_t answer_size)
 {
 	struct loop_data ld;
-	char domainbuf[256] = "";
+	char namebuf[NSIZE];
+	char domainbuf[NSIZE] = "";
 	
 	ld.qtype = ld.atype = T_A;
-	ld.name = xstrdup(host);
-	ld.name_size = strlen(ld.name);
+	strncpy(namebuf, host, sizeof namebuf - 1);
+	ld.name = namebuf;
+	ld.name_size = sizeof namebuf;
 	ld.domain = domainbuf;
 	ld.domain_size = sizeof domainbuf;
 	ld.answer = answer;
 	ld.answer_size = answer_size;
 	ld.hbuf = (char*) ipbuf;
 	ld.hbsize = ipbsize * sizeof ipbuf[0];
 	ld.hbcount = 0;
 	ld.ttl = ~(unsigned long)0;
 	ld.status = dns_failure;
 	ld.loopcnt = MAXCNAMEDEPTH;
 
 	cnameloop(&ld);
-	free(ld.name);
 	if (ld.status == dns_success) {
 		if (ipcount)
 			*ipcount = ld.hbcount;
 		if (ttl)
 			*ttl = ld.ttl;
 	}