2 * This file is part of DisOrder.
3 * Copyright (C) 2004 Richard Kettlewell
5 * This program is free software; you can redistribute it and/or modify
6 * it under the terms of the GNU General Public License as published by
7 * the Free Software Foundation; either version 2 of the License, or
8 * (at your option) any later version.
10 * This program is distributed in the hope that it will be useful, but
11 * WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 * General Public License for more details.
15 * You should have received a copy of the GNU General Public License
16 * along with this program; if not, write to the Free Software
17 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
26 #include <sys/types.h>
27 #include <sys/socket.h>
28 #include <netinet/in.h>
33 #include "configuration.h"
36 struct addrinfo *get_address(const struct stringlist *a,
37 const struct addrinfo *pref,
44 byte_xasprintf(&name, "host * service %s", a->s[0]);
45 if((rc = getaddrinfo(0, a->s[0], pref, &res))) {
46 error(0, "getaddrinfo %s: %s", a->s[0], gai_strerror(rc));
50 byte_xasprintf(&name, "host %s service %s", a->s[0], a->s[1]);
51 if((rc = getaddrinfo(a->s[0], a->s[1], pref, &res))) {
52 error(0, "getaddrinfo %s %s: %s", a->s[0], a->s[1], gai_strerror(rc));
56 if(!res || res->ai_socktype != SOCK_STREAM) {
57 error(0, "getaddrinfo didn't give us a stream socket");
67 int addrinfocmp(const struct addrinfo *a,
68 const struct addrinfo *b) {
69 const struct sockaddr_in *ina, *inb;
70 const struct sockaddr_in6 *in6a, *in6b;
72 if(a->ai_family != b->ai_family) return a->ai_family - b->ai_family;
73 if(a->ai_socktype != b->ai_socktype) return a->ai_socktype - b->ai_socktype;
74 if(a->ai_protocol != b->ai_protocol) return a->ai_protocol - b->ai_protocol;
75 switch(a->ai_protocol) {
77 ina = (const struct sockaddr_in *)a->ai_addr;
78 inb = (const struct sockaddr_in *)b->ai_addr;
79 if(ina->sin_port != inb->sin_port) return ina->sin_port - inb->sin_port;
80 return ina->sin_addr.s_addr - inb->sin_addr.s_addr;
83 in6a = (const struct sockaddr_in6 *)a->ai_addr;
84 in6b = (const struct sockaddr_in6 *)b->ai_addr;
85 if(in6a->sin6_port != in6b->sin6_port)
86 return in6a->sin6_port - in6b->sin6_port;
87 return memcmp(&in6a->sin6_addr, &in6b->sin6_addr,
88 sizeof (struct in6_addr));
90 error(0, "unsupported protocol family %d", a->ai_protocol);
91 return memcmp(a->ai_addr, b->ai_addr, a->ai_addrlen); /* kludge */