155682Smarkm/* 2233294Sstas * Copyright (c) 1999 - 2001 Kungliga Tekniska H��gskolan 355682Smarkm * (Royal Institute of Technology, Stockholm, Sweden). 455682Smarkm * All rights reserved. 5233294Sstas * 655682Smarkm * Redistribution and use in source and binary forms, with or without 755682Smarkm * modification, are permitted provided that the following conditions 855682Smarkm * are met: 9233294Sstas * 1055682Smarkm * 1. Redistributions of source code must retain the above copyright 1155682Smarkm * notice, this list of conditions and the following disclaimer. 12233294Sstas * 1355682Smarkm * 2. Redistributions in binary form must reproduce the above copyright 1455682Smarkm * notice, this list of conditions and the following disclaimer in the 1555682Smarkm * documentation and/or other materials provided with the distribution. 16233294Sstas * 1755682Smarkm * 3. Neither the name of the Institute nor the names of its contributors 1855682Smarkm * may be used to endorse or promote products derived from this software 1955682Smarkm * without specific prior written permission. 20233294Sstas * 2155682Smarkm * THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND 2255682Smarkm * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 2355682Smarkm * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 2455682Smarkm * ARE DISCLAIMED. IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE 2555682Smarkm * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 2655682Smarkm * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 2755682Smarkm * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 2855682Smarkm * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 2955682Smarkm * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 3055682Smarkm * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 3155682Smarkm * SUCH DAMAGE. 3255682Smarkm */ 3355682Smarkm 3455682Smarkm#include <config.h> 3555682Smarkm 3655682Smarkm#include "roken.h" 3755682Smarkm 3855682Smarkmstatic int 3955682Smarkmdoit (int af, 4055682Smarkm const void *addr, 4155682Smarkm size_t addrlen, 4255682Smarkm int port, 4355682Smarkm char *host, size_t hostlen, 4455682Smarkm char *serv, size_t servlen, 4555682Smarkm int flags) 4655682Smarkm{ 4755682Smarkm if (host != NULL) { 4855682Smarkm if (flags & NI_NUMERICHOST) { 4955682Smarkm if (inet_ntop (af, addr, host, hostlen) == NULL) 5055682Smarkm return EAI_SYSTEM; 5155682Smarkm } else { 5255682Smarkm struct hostent *he = gethostbyaddr (addr, 5355682Smarkm addrlen, 5455682Smarkm af); 5555682Smarkm if (he != NULL) { 5690926Snectar strlcpy (host, hostent_find_fqdn(he), hostlen); 5755682Smarkm if (flags & NI_NOFQDN) { 5855682Smarkm char *dot = strchr (host, '.'); 5955682Smarkm if (dot != NULL) 6055682Smarkm *dot = '\0'; 6155682Smarkm } 6255682Smarkm } else if (flags & NI_NAMEREQD) { 6355682Smarkm return EAI_NONAME; 6478527Sassar } else if (inet_ntop (af, addr, host, hostlen) == NULL) 6555682Smarkm return EAI_SYSTEM; 6655682Smarkm } 6755682Smarkm } 6855682Smarkm 6955682Smarkm if (serv != NULL) { 7055682Smarkm if (flags & NI_NUMERICSERV) { 7155682Smarkm snprintf (serv, servlen, "%u", ntohs(port)); 7255682Smarkm } else { 7355682Smarkm const char *proto = "tcp"; 7455682Smarkm struct servent *se; 7555682Smarkm 7655682Smarkm if (flags & NI_DGRAM) 7755682Smarkm proto = "udp"; 7855682Smarkm 7955682Smarkm se = getservbyport (port, proto); 8055682Smarkm if (se == NULL) { 8155682Smarkm snprintf (serv, servlen, "%u", ntohs(port)); 8255682Smarkm } else { 8355682Smarkm strlcpy (serv, se->s_name, servlen); 8455682Smarkm } 8555682Smarkm } 8655682Smarkm } 8755682Smarkm return 0; 8855682Smarkm} 8955682Smarkm 9055682Smarkm/* 9155682Smarkm * 9255682Smarkm */ 9355682Smarkm 94233294SstasROKEN_LIB_FUNCTION int ROKEN_LIB_CALL 9555682Smarkmgetnameinfo(const struct sockaddr *sa, socklen_t salen, 9655682Smarkm char *host, size_t hostlen, 9755682Smarkm char *serv, size_t servlen, 9855682Smarkm int flags) 9955682Smarkm{ 10055682Smarkm switch (sa->sa_family) { 10155682Smarkm#ifdef HAVE_IPV6 10255682Smarkm case AF_INET6 : { 10355682Smarkm const struct sockaddr_in6 *sin6 = (const struct sockaddr_in6 *)sa; 10455682Smarkm 10555682Smarkm return doit (AF_INET6, &sin6->sin6_addr, sizeof(sin6->sin6_addr), 10655682Smarkm sin6->sin6_port, 10755682Smarkm host, hostlen, 10855682Smarkm serv, servlen, 10955682Smarkm flags); 11055682Smarkm } 11155682Smarkm#endif 11255682Smarkm case AF_INET : { 113178825Sdfr const struct sockaddr_in *sin4 = (const struct sockaddr_in *)sa; 11455682Smarkm 115178825Sdfr return doit (AF_INET, &sin4->sin_addr, sizeof(sin4->sin_addr), 116178825Sdfr sin4->sin_port, 11755682Smarkm host, hostlen, 11855682Smarkm serv, servlen, 11955682Smarkm flags); 12055682Smarkm } 12155682Smarkm default : 12255682Smarkm return EAI_FAMILY; 12355682Smarkm } 12455682Smarkm} 125