155682Smarkm/* 278527Sassar * Copyright (c) 1999 - 2001 Kungliga Tekniska H�gskolan 355682Smarkm * (Royal Institute of Technology, Stockholm, Sweden). 455682Smarkm * All rights reserved. 555682Smarkm * 655682Smarkm * Redistribution and use in source and binary forms, with or without 755682Smarkm * modification, are permitted provided that the following conditions 855682Smarkm * are met: 955682Smarkm * 1055682Smarkm * 1. Redistributions of source code must retain the above copyright 1155682Smarkm * notice, this list of conditions and the following disclaimer. 1255682Smarkm * 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. 1655682Smarkm * 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. 2055682Smarkm * 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#ifdef HAVE_CONFIG_H 3555682Smarkm#include <config.h> 36178825SdfrRCSID("$Id: getnameinfo.c 15412 2005-06-16 16:53:09Z lha $"); 3755682Smarkm#endif 3855682Smarkm 3955682Smarkm#include "roken.h" 4055682Smarkm 4155682Smarkmstatic int 4255682Smarkmdoit (int af, 4355682Smarkm const void *addr, 4455682Smarkm size_t addrlen, 4555682Smarkm int port, 4655682Smarkm char *host, size_t hostlen, 4755682Smarkm char *serv, size_t servlen, 4855682Smarkm int flags) 4955682Smarkm{ 5055682Smarkm if (host != NULL) { 5155682Smarkm if (flags & NI_NUMERICHOST) { 5255682Smarkm if (inet_ntop (af, addr, host, hostlen) == NULL) 5355682Smarkm return EAI_SYSTEM; 5455682Smarkm } else { 5555682Smarkm struct hostent *he = gethostbyaddr (addr, 5655682Smarkm addrlen, 5755682Smarkm af); 5855682Smarkm if (he != NULL) { 5990926Snectar strlcpy (host, hostent_find_fqdn(he), hostlen); 6055682Smarkm if (flags & NI_NOFQDN) { 6155682Smarkm char *dot = strchr (host, '.'); 6255682Smarkm if (dot != NULL) 6355682Smarkm *dot = '\0'; 6455682Smarkm } 6555682Smarkm } else if (flags & NI_NAMEREQD) { 6655682Smarkm return EAI_NONAME; 6778527Sassar } else if (inet_ntop (af, addr, host, hostlen) == NULL) 6855682Smarkm return EAI_SYSTEM; 6955682Smarkm } 7055682Smarkm } 7155682Smarkm 7255682Smarkm if (serv != NULL) { 7355682Smarkm if (flags & NI_NUMERICSERV) { 7455682Smarkm snprintf (serv, servlen, "%u", ntohs(port)); 7555682Smarkm } else { 7655682Smarkm const char *proto = "tcp"; 7755682Smarkm struct servent *se; 7855682Smarkm 7955682Smarkm if (flags & NI_DGRAM) 8055682Smarkm proto = "udp"; 8155682Smarkm 8255682Smarkm se = getservbyport (port, proto); 8355682Smarkm if (se == NULL) { 8455682Smarkm snprintf (serv, servlen, "%u", ntohs(port)); 8555682Smarkm } else { 8655682Smarkm strlcpy (serv, se->s_name, servlen); 8755682Smarkm } 8855682Smarkm } 8955682Smarkm } 9055682Smarkm return 0; 9155682Smarkm} 9255682Smarkm 9355682Smarkm/* 9455682Smarkm * 9555682Smarkm */ 9655682Smarkm 97178825Sdfrint ROKEN_LIB_FUNCTION 9855682Smarkmgetnameinfo(const struct sockaddr *sa, socklen_t salen, 9955682Smarkm char *host, size_t hostlen, 10055682Smarkm char *serv, size_t servlen, 10155682Smarkm int flags) 10255682Smarkm{ 10355682Smarkm switch (sa->sa_family) { 10455682Smarkm#ifdef HAVE_IPV6 10555682Smarkm case AF_INET6 : { 10655682Smarkm const struct sockaddr_in6 *sin6 = (const struct sockaddr_in6 *)sa; 10755682Smarkm 10855682Smarkm return doit (AF_INET6, &sin6->sin6_addr, sizeof(sin6->sin6_addr), 10955682Smarkm sin6->sin6_port, 11055682Smarkm host, hostlen, 11155682Smarkm serv, servlen, 11255682Smarkm flags); 11355682Smarkm } 11455682Smarkm#endif 11555682Smarkm case AF_INET : { 116178825Sdfr const struct sockaddr_in *sin4 = (const struct sockaddr_in *)sa; 11755682Smarkm 118178825Sdfr return doit (AF_INET, &sin4->sin_addr, sizeof(sin4->sin_addr), 119178825Sdfr sin4->sin_port, 12055682Smarkm host, hostlen, 12155682Smarkm serv, servlen, 12255682Smarkm flags); 12355682Smarkm } 12455682Smarkm default : 12555682Smarkm return EAI_FAMILY; 12655682Smarkm } 12755682Smarkm} 128