2 * Copyright (c) 1999 - 2001 Kungliga Tekniska Högskolan
3 * (Royal Institute of Technology, Stockholm, Sweden).
6 * Redistribution and use in source and binary forms, with or without
7 * modification, are permitted provided that the following conditions
10 * 1. Redistributions of source code must retain the above copyright
11 * notice, this list of conditions and the following disclaimer.
13 * 2. Redistributions in binary form must reproduce the above copyright
14 * notice, this list of conditions and the following disclaimer in the
15 * documentation and/or other materials provided with the distribution.
17 * 3. Neither the name of the Institute nor the names of its contributors
18 * may be used to endorse or promote products derived from this software
19 * without specific prior written permission.
21 * THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
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23 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
24 * ARE DISCLAIMED. IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
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36 RCSID("$Id: getnameinfo.c 15412 2005-06-16 16:53:09Z lha $");
46 char *host, size_t hostlen,
47 char *serv, size_t servlen,
51 if (flags & NI_NUMERICHOST) {
52 if (inet_ntop (af, addr, host, hostlen) == NULL)
55 struct hostent *he = gethostbyaddr (addr,
59 strlcpy (host, hostent_find_fqdn(he), hostlen);
60 if (flags & NI_NOFQDN) {
61 char *dot = strchr (host, '.');
65 } else if (flags & NI_NAMEREQD) {
67 } else if (inet_ntop (af, addr, host, hostlen) == NULL)
73 if (flags & NI_NUMERICSERV) {
74 snprintf (serv, servlen, "%u", ntohs(port));
76 const char *proto = "tcp";
82 se = getservbyport (port, proto);
84 snprintf (serv, servlen, "%u", ntohs(port));
86 strlcpy (serv, se->s_name, servlen);
97 int ROKEN_LIB_FUNCTION
98 getnameinfo(const struct sockaddr *sa, socklen_t salen,
99 char *host, size_t hostlen,
100 char *serv, size_t servlen,
103 switch (sa->sa_family) {
106 const struct sockaddr_in6 *sin6 = (const struct sockaddr_in6 *)sa;
108 return doit (AF_INET6, &sin6->sin6_addr, sizeof(sin6->sin6_addr),
116 const struct sockaddr_in *sin4 = (const struct sockaddr_in *)sa;
118 return doit (AF_INET, &sin4->sin_addr, sizeof(sin4->sin_addr),