155682Smarkm/* 255682Smarkm * Copyright (c) 1999 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: copyhostent.c 14773 2005-04-12 11:29:18Z lha $"); 3755682Smarkm#endif 3855682Smarkm 3955682Smarkm#include "roken.h" 4055682Smarkm 4155682Smarkm/* 4255682Smarkm * return a malloced copy of `h' 4355682Smarkm */ 4455682Smarkm 45178825Sdfrstruct hostent * ROKEN_LIB_FUNCTION 4655682Smarkmcopyhostent (const struct hostent *h) 4755682Smarkm{ 4855682Smarkm struct hostent *res; 4955682Smarkm char **p; 5055682Smarkm int i, n; 5155682Smarkm 5255682Smarkm res = malloc (sizeof (*res)); 5355682Smarkm if (res == NULL) 5455682Smarkm return NULL; 5555682Smarkm res->h_name = NULL; 5655682Smarkm res->h_aliases = NULL; 5755682Smarkm res->h_addrtype = h->h_addrtype; 5855682Smarkm res->h_length = h->h_length; 5955682Smarkm res->h_addr_list = NULL; 6055682Smarkm res->h_name = strdup (h->h_name); 6155682Smarkm if (res->h_name == NULL) { 6255682Smarkm freehostent (res); 6355682Smarkm return NULL; 6455682Smarkm } 6555682Smarkm for (n = 0, p = h->h_aliases; *p != NULL; ++p) 6655682Smarkm ++n; 6755682Smarkm res->h_aliases = malloc ((n + 1) * sizeof(*res->h_aliases)); 6855682Smarkm if (res->h_aliases == NULL) { 6955682Smarkm freehostent (res); 7055682Smarkm return NULL; 7155682Smarkm } 7255682Smarkm for (i = 0; i < n + 1; ++i) 7355682Smarkm res->h_aliases[i] = NULL; 7455682Smarkm for (i = 0; i < n; ++i) { 7555682Smarkm res->h_aliases[i] = strdup (h->h_aliases[i]); 7655682Smarkm if (res->h_aliases[i] == NULL) { 7755682Smarkm freehostent (res); 7855682Smarkm return NULL; 7955682Smarkm } 8055682Smarkm } 8155682Smarkm 8255682Smarkm for (n = 0, p = h->h_addr_list; *p != NULL; ++p) 8355682Smarkm ++n; 8455682Smarkm res->h_addr_list = malloc ((n + 1) * sizeof(*res->h_addr_list)); 8555682Smarkm if (res->h_addr_list == NULL) { 8655682Smarkm freehostent (res); 8755682Smarkm return NULL; 8855682Smarkm } 8955682Smarkm for (i = 0; i < n + 1; ++i) { 9055682Smarkm res->h_addr_list[i] = NULL; 9155682Smarkm } 9255682Smarkm for (i = 0; i < n; ++i) { 9355682Smarkm res->h_addr_list[i] = malloc (h->h_length); 9455682Smarkm if (res->h_addr_list[i] == NULL) { 9555682Smarkm freehostent (res); 9655682Smarkm return NULL; 9755682Smarkm } 9855682Smarkm memcpy (res->h_addr_list[i], h->h_addr_list[i], h->h_length); 9955682Smarkm } 10055682Smarkm return res; 10155682Smarkm} 10255682Smarkm 103