/*
- * Copyright (c) 1996, 1998-2001 Todd C. Miller <Todd.Miller@courtesan.com>
- * All rights reserved.
+ * Copyright (c) 1996, 1998-2005, 2007-2010
+ * Todd C. Miller <Todd.Miller@courtesan.com>
*
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
+ * 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.
*
- * 1. Redistributions of source code must retain the above copyright
- * notice, this list of conditions and the following disclaimer.
+ * 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.
*
- * 2. Redistributions in binary form must reproduce the above copyright
- * notice, this list of conditions and the following disclaimer in the
- * documentation and/or other materials provided with the distribution.
- *
- * 3. The name of the author may not be used to endorse or promote products
- * derived from this software without specific prior written permission.
- *
- * 4. Products derived from this software may not be called "Sudo" nor
- * may "Sudo" appear in their names without specific prior written
- * permission from the author.
- *
- * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES,
- * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY
- * AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL
- * THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
- * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
- * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
- * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
- * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
- * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
- * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ * Sponsored in part by the Defense Advanced Research Projects
+ * Agency (DARPA) and Air Force Research Laboratory, Air Force
+ * Materiel Command, USAF, under agreement number F39502-99-1-0512.
*/
/*
- * Supress a warning w/ gcc on Digital UN*X.
+ * Suppress a warning w/ gcc on Digital UN*X.
* The system headers should really do this....
*/
#if defined(__osf__) && !defined(__cplusplus)
struct rtentry;
#endif
-#include "config.h"
+#include <config.h>
#include <sys/types.h>
#include <sys/socket.h>
# include <memory.h>
# endif
# include <string.h>
-#else
-# ifdef HAVE_STRINGS_H
-# include <strings.h>
-# endif
#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 <sys/stream.h>
# include <sys/sioctl.h>
# include <sys/stropts.h>
-# include <net/errno.h>
# define STRSET(cmd, param, len) {strioctl.ic_cmd=(cmd);\
strioctl.ic_dp=(param);\
strioctl.ic_timout=0;\
#include "sudo.h"
#include "interfaces.h"
-#ifndef lint
-static const char rcsid[] = "$Sudo: interfaces.c,v 1.63 2002/01/18 19:17:07 millert Exp $";
-#endif /* lint */
-
+/* Minix apparently lacks IFF_LOOPBACK */
+#ifndef IFF_LOOPBACK
+# define IFF_LOOPBACK 0
+#endif
#ifdef HAVE_GETIFADDRS
load_interfaces()
{
struct ifaddrs *ifa, *ifaddrs;
- /* XXX - sockaddr_in6 sin6; */
struct sockaddr_in *sin;
+#ifdef HAVE_IN6_ADDR
+ struct sockaddr_in6 *sin6;
+#endif
int i;
if (getifaddrs(&ifaddrs))
return;
/* Allocate space for the interfaces list. */
- for (ifa = ifaddrs; ifa -> ifa_next; ifa = ifa -> ifa_next) {
+ for (ifa = ifaddrs; ifa != NULL; ifa = ifa -> ifa_next) {
/* Skip interfaces marked "down" and "loopback". */
- if (ifa->ifa_addr == NULL || !(ifa->ifa_flags & IFF_UP) ||
- (ifa->ifa_flags & IFF_LOOPBACK))
+ if (ifa->ifa_addr == NULL || !ISSET(ifa->ifa_flags, IFF_UP) ||
+ ISSET(ifa->ifa_flags, IFF_LOOPBACK))
continue;
switch(ifa->ifa_addr->sa_family) {
- /* XXX - AF_INET6 */
case AF_INET:
+#ifdef HAVE_IN6_ADDR
+ case AF_INET6:
+#endif
num_interfaces++;
break;
}
}
+ if (num_interfaces == 0)
+ return;
interfaces =
- (struct interface *) emalloc(sizeof(struct interface) * num_interfaces);
+ (struct interface *) emalloc2(num_interfaces, sizeof(struct interface));
/* Store the ip addr / netmask pairs. */
- for (ifa = ifaddrs, i = 0; ifa -> ifa_next; ifa = ifa -> ifa_next) {
+ for (ifa = ifaddrs, i = 0; ifa != NULL; ifa = ifa -> ifa_next) {
/* Skip interfaces marked "down" and "loopback". */
- if (ifa->ifa_addr == NULL || !(ifa->ifa_flags & IFF_UP) ||
- (ifa->ifa_flags & IFF_LOOPBACK))
+ if (ifa->ifa_addr == NULL || !ISSET(ifa->ifa_flags, IFF_UP) ||
+ ISSET(ifa->ifa_flags, IFF_LOOPBACK))
continue;
switch(ifa->ifa_addr->sa_family) {
- /* XXX - AF_INET6 */
case AF_INET:
sin = (struct sockaddr_in *)ifa->ifa_addr;
+ if (sin == NULL)
+ continue;
memcpy(&interfaces[i].addr, &sin->sin_addr,
sizeof(struct in_addr));
sin = (struct sockaddr_in *)ifa->ifa_netmask;
+ if (sin == NULL)
+ continue;
memcpy(&interfaces[i].netmask, &sin->sin_addr,
sizeof(struct in_addr));
+ interfaces[i].family = AF_INET;
i++;
break;
+#ifdef HAVE_IN6_ADDR
+ case AF_INET6:
+ sin6 = (struct sockaddr_in6 *)ifa->ifa_addr;
+ if (sin6 == NULL)
+ continue;
+ memcpy(&interfaces[i].addr, &sin6->sin6_addr,
+ sizeof(struct in6_addr));
+ sin6 = (struct sockaddr_in6 *)ifa->ifa_netmask;
+ if (sin6 == NULL)
+ continue;
+ memcpy(&interfaces[i].netmask, &sin6->sin6_addr,
+ sizeof(struct in6_addr));
+ interfaces[i].family = AF_INET6;
+ i++;
+ break;
+#endif /* HAVE_IN6_ADDR */
}
}
#ifdef HAVE_FREEIFADDRS
freeifaddrs(ifaddrs);
#else
- free(ifaddrs);
+ efree(ifaddrs);
#endif
}
#endif /* _ISC */
sock = socket(AF_INET, SOCK_DGRAM, 0);
- if (sock < 0) {
- (void) fprintf(stderr, "%s: cannot open socket: %s\n",
- Argv[0], strerror(errno));
- exit(1);
- }
+ if (sock < 0)
+ error(1, "cannot open socket");
/*
- * Get interface configuration or return (leaving num_interfaces 0)
+ * Get interface configuration or return (leaving num_interfaces == 0)
*/
for (;;) {
ifconf_buf = erealloc(ifconf_buf, len);
ifconf->ifc_len = len - sizeof(struct ifconf);
ifconf->ifc_buf = (caddr_t) (ifconf_buf + sizeof(struct ifconf));
- /* Networking may not be installed in kernel... */
#ifdef _ISC
STRSET(SIOCGIFCONF, (caddr_t) ifconf, len);
if (ioctl(sock, I_STR, (caddr_t) &strioctl) < 0) {
#else
- if (ioctl(sock, SIOCGIFCONF, (caddr_t) ifconf) < 0) {
+ /* Note that some kernels return EINVAL if the buffer is too small */
+ if (ioctl(sock, SIOCGIFCONF, (caddr_t) ifconf) < 0 && errno != EINVAL) {
#endif /* _ISC */
- free(ifconf_buf);
+ efree(ifconf_buf);
(void) close(sock);
return;
}
}
/* Allocate space for the maximum number of interfaces that could exist. */
- n = ifconf->ifc_len / sizeof(struct ifreq);
- interfaces = (struct interface *) emalloc(sizeof(struct interface) * n);
+ if ((n = ifconf->ifc_len / sizeof(struct ifreq)) == 0)
+ return;
+ interfaces = (struct interface *) emalloc2(n, sizeof(struct interface));
/* For each interface, store the ip address and netmask. */
for (i = 0; i < ifconf->ifc_len; ) {
continue;
#ifdef SIOCGIFFLAGS
- memset(&ifr_tmp, 0, sizeof(ifr_tmp));
+ zero_bytes(&ifr_tmp, sizeof(ifr_tmp));
strncpy(ifr_tmp.ifr_name, ifr->ifr_name, sizeof(ifr_tmp.ifr_name) - 1);
if (ioctl(sock, SIOCGIFFLAGS, (caddr_t) &ifr_tmp) < 0)
#endif
ifr_tmp = *ifr;
/* Skip interfaces marked "down" and "loopback". */
- if (!(ifr_tmp.ifr_flags & IFF_UP) || (ifr_tmp.ifr_flags & IFF_LOOPBACK))
+ if (!ISSET(ifr_tmp.ifr_flags, IFF_UP) ||
+ ISSET(ifr_tmp.ifr_flags, IFF_LOOPBACK))
continue;
sin = (struct sockaddr_in *) &ifr->ifr_addr;
- interfaces[num_interfaces].addr.s_addr = sin->sin_addr.s_addr;
+ interfaces[num_interfaces].addr.ip4.s_addr = sin->sin_addr.s_addr;
/* Stash the name of the interface we saved. */
previfname = ifr->ifr_name;
/* Get the netmask. */
- (void) memset(&ifr_tmp, 0, sizeof(ifr_tmp));
+ zero_bytes(&ifr_tmp, sizeof(ifr_tmp));
strncpy(ifr_tmp.ifr_name, ifr->ifr_name, sizeof(ifr_tmp.ifr_name) - 1);
#ifdef SIOCGIFNETMASK
#ifdef _ISC
#endif /* _ISC */
sin = (struct sockaddr_in *) &ifr_tmp.ifr_addr;
- interfaces[num_interfaces].netmask.s_addr = sin->sin_addr.s_addr;
+ interfaces[num_interfaces].netmask.ip4.s_addr = sin->sin_addr.s_addr;
} else {
#else
{
#endif /* SIOCGIFNETMASK */
- if (IN_CLASSC(interfaces[num_interfaces].addr.s_addr))
- interfaces[num_interfaces].netmask.s_addr = htonl(IN_CLASSC_NET);
- else if (IN_CLASSB(interfaces[num_interfaces].addr.s_addr))
- interfaces[num_interfaces].netmask.s_addr = htonl(IN_CLASSB_NET);
+ if (IN_CLASSC(interfaces[num_interfaces].addr.ip4.s_addr))
+ interfaces[num_interfaces].netmask.ip4.s_addr = htonl(IN_CLASSC_NET);
+ else if (IN_CLASSB(interfaces[num_interfaces].addr.ip4.s_addr))
+ interfaces[num_interfaces].netmask.ip4.s_addr = htonl(IN_CLASSB_NET);
else
- interfaces[num_interfaces].netmask.s_addr = htonl(IN_CLASSA_NET);
+ interfaces[num_interfaces].netmask.ip4.s_addr = htonl(IN_CLASSA_NET);
}
/* Only now can we be sure it was a good/interesting interface. */
+ interfaces[num_interfaces].family = AF_INET;
num_interfaces++;
}
/* If the expected size < real size, realloc the array. */
if (n != num_interfaces) {
if (num_interfaces != 0)
- interfaces = (struct interface *) erealloc(interfaces,
- sizeof(struct interface) * num_interfaces);
+ interfaces = (struct interface *) erealloc3(interfaces,
+ num_interfaces, sizeof(struct interface));
else
- free(interfaces);
+ efree(interfaces);
}
- free(ifconf_buf);
+ efree(ifconf_buf);
(void) close(sock);
}
dump_interfaces()
{
int i;
+#ifdef HAVE_IN6_ADDR
+ char addrbuf[INET6_ADDRSTRLEN], maskbuf[INET6_ADDRSTRLEN];
+#endif
puts("Local IP address and netmask pairs:");
- for (i = 0; i < num_interfaces; i++)
- printf("\t%s / 0x%x\n", inet_ntoa(interfaces[i].addr),
- ntohl(interfaces[i].netmask.s_addr));
+ for (i = 0; i < num_interfaces; i++) {
+ switch(interfaces[i].family) {
+ case AF_INET:
+ printf("\t%s / ", inet_ntoa(interfaces[i].addr.ip4));
+ puts(inet_ntoa(interfaces[i].netmask.ip4));
+ break;
+#ifdef HAVE_IN6_ADDR
+ case AF_INET6:
+ inet_ntop(AF_INET6, &interfaces[i].addr.ip6,
+ addrbuf, sizeof(addrbuf));
+ inet_ntop(AF_INET6, &interfaces[i].netmask.ip6,
+ maskbuf, sizeof(maskbuf));
+ printf("\t%s / %s\n", addrbuf, maskbuf);
+ break;
+#endif /* HAVE_IN6_ADDR */
+ }
+ }
}
projects / debian / sudo / blobdiff