1*ebfedea0SLionel Sambuc /* $NetBSD: copyhostent.c,v 1.1.1.1 2011/04/13 18:15:40 elric Exp $ */
2*ebfedea0SLionel Sambuc
3*ebfedea0SLionel Sambuc /*
4*ebfedea0SLionel Sambuc * Copyright (c) 1999 Kungliga Tekniska Högskolan
5*ebfedea0SLionel Sambuc * (Royal Institute of Technology, Stockholm, Sweden).
6*ebfedea0SLionel Sambuc * All rights reserved.
7*ebfedea0SLionel Sambuc *
8*ebfedea0SLionel Sambuc * Redistribution and use in source and binary forms, with or without
9*ebfedea0SLionel Sambuc * modification, are permitted provided that the following conditions
10*ebfedea0SLionel Sambuc * are met:
11*ebfedea0SLionel Sambuc *
12*ebfedea0SLionel Sambuc * 1. Redistributions of source code must retain the above copyright
13*ebfedea0SLionel Sambuc * notice, this list of conditions and the following disclaimer.
14*ebfedea0SLionel Sambuc *
15*ebfedea0SLionel Sambuc * 2. Redistributions in binary form must reproduce the above copyright
16*ebfedea0SLionel Sambuc * notice, this list of conditions and the following disclaimer in the
17*ebfedea0SLionel Sambuc * documentation and/or other materials provided with the distribution.
18*ebfedea0SLionel Sambuc *
19*ebfedea0SLionel Sambuc * 3. Neither the name of the Institute nor the names of its contributors
20*ebfedea0SLionel Sambuc * may be used to endorse or promote products derived from this software
21*ebfedea0SLionel Sambuc * without specific prior written permission.
22*ebfedea0SLionel Sambuc *
23*ebfedea0SLionel Sambuc * THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
24*ebfedea0SLionel Sambuc * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
25*ebfedea0SLionel Sambuc * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
26*ebfedea0SLionel Sambuc * ARE DISCLAIMED. IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
27*ebfedea0SLionel Sambuc * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
28*ebfedea0SLionel Sambuc * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
29*ebfedea0SLionel Sambuc * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
30*ebfedea0SLionel Sambuc * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
31*ebfedea0SLionel Sambuc * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
32*ebfedea0SLionel Sambuc * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
33*ebfedea0SLionel Sambuc * SUCH DAMAGE.
34*ebfedea0SLionel Sambuc */
35*ebfedea0SLionel Sambuc
36*ebfedea0SLionel Sambuc #include <config.h>
37*ebfedea0SLionel Sambuc
38*ebfedea0SLionel Sambuc #include <krb5/roken.h>
39*ebfedea0SLionel Sambuc
40*ebfedea0SLionel Sambuc /*
41*ebfedea0SLionel Sambuc * return a malloced copy of `h'
42*ebfedea0SLionel Sambuc */
43*ebfedea0SLionel Sambuc
44*ebfedea0SLionel Sambuc ROKEN_LIB_FUNCTION struct hostent * ROKEN_LIB_CALL
copyhostent(const struct hostent * h)45*ebfedea0SLionel Sambuc copyhostent (const struct hostent *h)
46*ebfedea0SLionel Sambuc {
47*ebfedea0SLionel Sambuc struct hostent *res;
48*ebfedea0SLionel Sambuc char **p;
49*ebfedea0SLionel Sambuc int i, n;
50*ebfedea0SLionel Sambuc
51*ebfedea0SLionel Sambuc res = malloc (sizeof (*res));
52*ebfedea0SLionel Sambuc if (res == NULL)
53*ebfedea0SLionel Sambuc return NULL;
54*ebfedea0SLionel Sambuc res->h_name = NULL;
55*ebfedea0SLionel Sambuc res->h_aliases = NULL;
56*ebfedea0SLionel Sambuc res->h_addrtype = h->h_addrtype;
57*ebfedea0SLionel Sambuc res->h_length = h->h_length;
58*ebfedea0SLionel Sambuc res->h_addr_list = NULL;
59*ebfedea0SLionel Sambuc res->h_name = strdup (h->h_name);
60*ebfedea0SLionel Sambuc if (res->h_name == NULL) {
61*ebfedea0SLionel Sambuc freehostent (res);
62*ebfedea0SLionel Sambuc return NULL;
63*ebfedea0SLionel Sambuc }
64*ebfedea0SLionel Sambuc for (n = 0, p = h->h_aliases; *p != NULL; ++p)
65*ebfedea0SLionel Sambuc ++n;
66*ebfedea0SLionel Sambuc res->h_aliases = malloc ((n + 1) * sizeof(*res->h_aliases));
67*ebfedea0SLionel Sambuc if (res->h_aliases == NULL) {
68*ebfedea0SLionel Sambuc freehostent (res);
69*ebfedea0SLionel Sambuc return NULL;
70*ebfedea0SLionel Sambuc }
71*ebfedea0SLionel Sambuc for (i = 0; i < n + 1; ++i)
72*ebfedea0SLionel Sambuc res->h_aliases[i] = NULL;
73*ebfedea0SLionel Sambuc for (i = 0; i < n; ++i) {
74*ebfedea0SLionel Sambuc res->h_aliases[i] = strdup (h->h_aliases[i]);
75*ebfedea0SLionel Sambuc if (res->h_aliases[i] == NULL) {
76*ebfedea0SLionel Sambuc freehostent (res);
77*ebfedea0SLionel Sambuc return NULL;
78*ebfedea0SLionel Sambuc }
79*ebfedea0SLionel Sambuc }
80*ebfedea0SLionel Sambuc
81*ebfedea0SLionel Sambuc for (n = 0, p = h->h_addr_list; *p != NULL; ++p)
82*ebfedea0SLionel Sambuc ++n;
83*ebfedea0SLionel Sambuc res->h_addr_list = malloc ((n + 1) * sizeof(*res->h_addr_list));
84*ebfedea0SLionel Sambuc if (res->h_addr_list == NULL) {
85*ebfedea0SLionel Sambuc freehostent (res);
86*ebfedea0SLionel Sambuc return NULL;
87*ebfedea0SLionel Sambuc }
88*ebfedea0SLionel Sambuc for (i = 0; i < n + 1; ++i) {
89*ebfedea0SLionel Sambuc res->h_addr_list[i] = NULL;
90*ebfedea0SLionel Sambuc }
91*ebfedea0SLionel Sambuc for (i = 0; i < n; ++i) {
92*ebfedea0SLionel Sambuc res->h_addr_list[i] = malloc (h->h_length);
93*ebfedea0SLionel Sambuc if (res->h_addr_list[i] == NULL) {
94*ebfedea0SLionel Sambuc freehostent (res);
95*ebfedea0SLionel Sambuc return NULL;
96*ebfedea0SLionel Sambuc }
97*ebfedea0SLionel Sambuc memcpy (res->h_addr_list[i], h->h_addr_list[i], h->h_length);
98*ebfedea0SLionel Sambuc }
99*ebfedea0SLionel Sambuc return res;
100*ebfedea0SLionel Sambuc }
101*ebfedea0SLionel Sambuc
102