/*
* Copyright (c) 2010-2013 Todd C. Miller <Todd.Miller@courtesan.com>
*
* Permission to use, copy, modify, and distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
* copyright notice and this permission notice appear in all copies.
*
* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/
#include <config.h>
#include <sys/types.h>
#include <sys/socket.h>
#include <stdio.h>
#ifdef STDC_HEADERS
# include <stdlib.h>
# include <stddef.h>
#else
# ifdef HAVE_STDLIB_H
# include <stdlib.h>
# endif
#endif /* STDC_HEADERS */
#ifdef HAVE_STRING_H
# if defined(HAVE_MEMORY_H) && !defined(STDC_HEADERS)
# include <memory.h>
# endif
# include <string.h>
#endif /* HAVE_STRING_H */
#ifdef HAVE_STRINGS_H
# include <strings.h>
#endif /* HAVE_STRINGS_H */
#ifdef HAVE_UNISTD_H
# include <unistd.h>
#endif /* HAVE_UNISTD_H */
#include <netinet/in.h>
#include <arpa/inet.h>
#include <netdb.h>
#include <errno.h>
#include "sudoers.h"
#include "interfaces.h"
#ifndef INADDR_NONE
# define INADDR_NONE ((unsigned int)-1)
#endif
static struct interface_list interfaces;
/*
* Parse a space-delimited list of IP address/netmask pairs and
* store in a list of interface structures.
*/
void
set_interfaces(const char *ai)
{
char *addrinfo, *addr, *mask;
struct interface *ifp;
debug_decl(set_interfaces, SUDO_DEBUG_NETIF)
addrinfo = estrdup(ai);
for (addr = strtok(addrinfo, " \t"); addr != NULL; addr = strtok(NULL, " \t")) {
/* Separate addr and mask. */
if ((mask = strchr(addr, '/')) == NULL)
continue;
*mask++ = '\0';
/* Parse addr and store in list. */
ifp = ecalloc(1, sizeof(*ifp));
if (strchr(addr, ':')) {
/* IPv6 */
#ifdef HAVE_STRUCT_IN6_ADDR
ifp->family = AF_INET6;
if (inet_pton(AF_INET6, addr, &ifp->addr.ip6) != 1 ||
inet_pton(AF_INET6, mask, &ifp->netmask.ip6) != 1)
#endif
{
efree(ifp);
continue;
}
} else {
/* IPv4 */
ifp->family = AF_INET;
if (inet_pton(AF_INET, addr, &ifp->addr.ip4) != 1 ||
inet_pton(AF_INET, mask, &ifp->netmask.ip4) != 1) {
efree(ifp);
continue;
}
}
SLIST_INSERT_HEAD(&interfaces, ifp, entries);
}
efree(addrinfo);
debug_return;
}
struct interface_list *
get_interfaces(void)
{
return &interfaces;
}
void
dump_interfaces(const char *ai)
{
char *cp, *addrinfo;
debug_decl(set_interfaces, SUDO_DEBUG_NETIF)
addrinfo = estrdup(ai);
sudo_printf(SUDO_CONV_INFO_MSG, _("Local IP address and netmask pairs:\n"));
for (cp = strtok(addrinfo, " \t"); cp != NULL; cp = strtok(NULL, " \t"))
sudo_printf(SUDO_CONV_INFO_MSG, "\t%s\n", cp);
efree(addrinfo);
debug_return;
}
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