111 lines
2.7 KiB
Diff
111 lines
2.7 KiB
Diff
diff --git a/addrtoname.c b/addrtoname.c
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index 33b9378..426839c 100644
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--- a/addrtoname.c
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+++ b/addrtoname.c
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@@ -277,7 +277,6 @@ extern cap_channel_t *capdns;
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const char *
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ipaddr_string(netdissect_options *ndo, const u_char *ap)
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{
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- struct hostent *hp;
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uint32_t addr;
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struct hnamemem *p;
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@@ -299,13 +298,29 @@ ipaddr_string(netdissect_options *ndo, const u_char *ap)
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*/
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if (!ndo->ndo_nflag &&
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(addr & f_netmask) == f_localnet) {
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-#ifdef HAVE_CASPER
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- if (capdns != NULL) {
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- hp = cap_gethostbyaddr(capdns, (char *)&addr, 4,
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- AF_INET);
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- } else
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-#endif
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- hp = gethostbyaddr((char *)&addr, 4, AF_INET);
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+#ifdef HAVE_GETNAMEINFO
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+ struct sockaddr_in sa;
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+ char hbuf[NI_MAXHOST];
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+
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+ memset(&sa, 0, sizeof (sa));
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+ sa.sin_family = AF_INET;
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+ sa.sin_addr.s_addr = addr;
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+ if (!getnameinfo((struct sockaddr *)&sa, sizeof (sa),
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+ hbuf, sizeof (hbuf), NULL, 0, 0)) {
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+ if (ndo->ndo_Nflag) {
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+ char *dotp;
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+
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+ /* Remove domain qualifications */
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+ dotp = strchr(hbuf, '.');
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+ if (dotp)
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+ *dotp = '\0';
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+ }
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+ p->name = strdup(hbuf);
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+ return p->name;
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+ }
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+#else
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+ struct hostent *hp;
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+ hp = gethostbyaddr((char *)&addr, 4, AF_INET);
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if (hp) {
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char *dotp;
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@@ -321,6 +336,7 @@ ipaddr_string(netdissect_options *ndo, const u_char *ap)
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}
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return (p->name);
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}
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+#endif
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}
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p->name = strdup(intoa(addr));
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if (p->name == NULL)
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@@ -336,7 +352,6 @@ ipaddr_string(netdissect_options *ndo, const u_char *ap)
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const char *
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ip6addr_string(netdissect_options *ndo, const u_char *ap)
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{
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- struct hostent *hp;
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union {
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nd_ipv6 addr;
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struct for_hash_addr {
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@@ -361,13 +376,29 @@ ip6addr_string(netdissect_options *ndo, const u_char *ap)
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* Do not print names if -n was given.
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*/
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if (!ndo->ndo_nflag) {
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-#ifdef HAVE_CASPER
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- if (capdns != NULL) {
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- hp = cap_gethostbyaddr(capdns, (char *)&addr,
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- sizeof(addr), AF_INET6);
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- } else
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-#endif
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- hp = gethostbyaddr((char *)&addr, sizeof(addr),
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+#ifdef HAVE_GETNAMEINFO
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+ struct sockaddr_in6 sa;
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+ char hbuf[NI_MAXHOST];
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+
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+ memset(&sa, 0, sizeof (sa));
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+ sa.sin6_family = AF_INET6;
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+ sa.sin6_addr = addr.addr;
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+ if (!getnameinfo((struct sockaddr *)&sa, sizeof (sa),
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+ hbuf, sizeof (hbuf), NULL, 0, 0)) {
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+ if (ndo->ndo_Nflag) {
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+ char *dotp;
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+
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+ /* Remove domain qualifications */
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+ dotp = strchr(hbuf, '.');
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+ if (dotp)
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+ *dotp = '\0';
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+ }
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+ p->name = strdup(hbuf);
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+ return p->name;
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+ }
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+#else
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+ struct hostent *hp;
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+ hp = gethostbyaddr((char *)&addr, sizeof(addr),
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AF_INET6);
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if (hp) {
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char *dotp;
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@@ -384,6 +415,7 @@ ip6addr_string(netdissect_options *ndo, const u_char *ap)
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}
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return (p->name);
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}
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+#endif
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}
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cp = addrtostr6(ap, ntop_buf, sizeof(ntop_buf));
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p->name = strdup(cp);
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