1b528cefcSMark Murray /* 2adb0ddaeSAssar Westerlund * Copyright (c) 1999 - 2001 Kungliga Tekniska H�gskolan 3b528cefcSMark Murray * (Royal Institute of Technology, Stockholm, Sweden). 4b528cefcSMark Murray * All rights reserved. 5b528cefcSMark Murray * 6b528cefcSMark Murray * Redistribution and use in source and binary forms, with or without 7b528cefcSMark Murray * modification, are permitted provided that the following conditions 8b528cefcSMark Murray * are met: 9b528cefcSMark Murray * 10b528cefcSMark Murray * 1. Redistributions of source code must retain the above copyright 11b528cefcSMark Murray * notice, this list of conditions and the following disclaimer. 12b528cefcSMark Murray * 13b528cefcSMark Murray * 2. Redistributions in binary form must reproduce the above copyright 14b528cefcSMark Murray * notice, this list of conditions and the following disclaimer in the 15b528cefcSMark Murray * documentation and/or other materials provided with the distribution. 16b528cefcSMark Murray * 17b528cefcSMark Murray * 3. Neither the name of the Institute nor the names of its contributors 18b528cefcSMark Murray * may be used to endorse or promote products derived from this software 19b528cefcSMark Murray * without specific prior written permission. 20b528cefcSMark Murray * 21b528cefcSMark Murray * THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND 22b528cefcSMark Murray * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 23b528cefcSMark Murray * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 24b528cefcSMark Murray * ARE DISCLAIMED. IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE 25b528cefcSMark Murray * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 26b528cefcSMark Murray * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 27b528cefcSMark Murray * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 28b528cefcSMark Murray * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 29b528cefcSMark Murray * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 30b528cefcSMark Murray * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 31b528cefcSMark Murray * SUCH DAMAGE. 32b528cefcSMark Murray */ 33b528cefcSMark Murray 34b528cefcSMark Murray #ifdef HAVE_CONFIG_H 35b528cefcSMark Murray #include <config.h> 36adb0ddaeSAssar Westerlund RCSID("$Id: getnameinfo_verified.c,v 1.5 2001/02/12 13:55:07 assar Exp $"); 37b528cefcSMark Murray #endif 38b528cefcSMark Murray 39b528cefcSMark Murray #include "roken.h" 40b528cefcSMark Murray 41b528cefcSMark Murray int 42b528cefcSMark Murray getnameinfo_verified(const struct sockaddr *sa, socklen_t salen, 43b528cefcSMark Murray char *host, size_t hostlen, 44b528cefcSMark Murray char *serv, size_t servlen, 45b528cefcSMark Murray int flags) 46b528cefcSMark Murray { 47b528cefcSMark Murray int ret; 48b528cefcSMark Murray struct addrinfo *ai, *a; 49adb0ddaeSAssar Westerlund char servbuf[NI_MAXSERV]; 50adb0ddaeSAssar Westerlund struct addrinfo hints; 51b528cefcSMark Murray 52b528cefcSMark Murray if (host == NULL) 53b528cefcSMark Murray return EAI_NONAME; 54b528cefcSMark Murray 55adb0ddaeSAssar Westerlund if (serv == NULL) { 56adb0ddaeSAssar Westerlund serv = servbuf; 57adb0ddaeSAssar Westerlund servlen = sizeof(servbuf); 58adb0ddaeSAssar Westerlund } 59adb0ddaeSAssar Westerlund 60adb0ddaeSAssar Westerlund ret = getnameinfo (sa, salen, host, hostlen, serv, servlen, 61adb0ddaeSAssar Westerlund flags | NI_NUMERICSERV); 62b528cefcSMark Murray if (ret) 63b528cefcSMark Murray return ret; 64adb0ddaeSAssar Westerlund 65adb0ddaeSAssar Westerlund memset (&hints, 0, sizeof(hints)); 66adb0ddaeSAssar Westerlund hints.ai_socktype = SOCK_STREAM; 67adb0ddaeSAssar Westerlund ret = getaddrinfo (host, serv, &hints, &ai); 68b528cefcSMark Murray if (ret) 69b528cefcSMark Murray return ret; 70b528cefcSMark Murray for (a = ai; a != NULL; a = a->ai_next) { 71b528cefcSMark Murray if (a->ai_addrlen == salen 725e9cd1aeSAssar Westerlund && memcmp (a->ai_addr, sa, salen) == 0) { 735e9cd1aeSAssar Westerlund freeaddrinfo (ai); 74b528cefcSMark Murray return 0; 75b528cefcSMark Murray } 765e9cd1aeSAssar Westerlund } 775e9cd1aeSAssar Westerlund freeaddrinfo (ai); 78b528cefcSMark Murray if (flags & NI_NAMEREQD) 79b528cefcSMark Murray return EAI_NONAME; 80b528cefcSMark Murray ret = getnameinfo (sa, salen, host, hostlen, serv, servlen, 81b528cefcSMark Murray flags | NI_NUMERICSERV | NI_NUMERICHOST); 82b528cefcSMark Murray return ret; 83b528cefcSMark Murray } 84