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-rw-r--r--contrib/libpcap/fad-glifc.c325
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diff --git a/contrib/libpcap/fad-glifc.c b/contrib/libpcap/fad-glifc.c
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+/* -*- Mode: c; tab-width: 8; indent-tabs-mode: 1; c-basic-offset: 8; -*- */
+/*
+ * Copyright (c) 1994, 1995, 1996, 1997, 1998
+ * The Regents of the University of California. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 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. All advertising materials mentioning features or use of this software
+ * must display the following acknowledgement:
+ * This product includes software developed by the Computer Systems
+ * Engineering Group at Lawrence Berkeley Laboratory.
+ * 4. Neither the name of the University nor of the Laboratory may be used
+ * to endorse or promote products derived from this software without
+ * specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``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 REGENTS OR CONTRIBUTORS 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.
+ */
+
+#ifndef lint
+static const char rcsid[] _U_ =
+ "@(#) $Header: /tcpdump/master/libpcap/fad-glifc.c,v 1.2.2.1 2003/11/15 23:26:39 guy Exp $ (LBL)";
+#endif
+
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#endif
+
+#include <sys/param.h>
+#include <sys/file.h>
+#include <sys/ioctl.h>
+#include <sys/socket.h>
+#ifdef HAVE_SYS_SOCKIO_H
+#include <sys/sockio.h>
+#endif
+#include <sys/time.h> /* concession to AIX */
+
+struct mbuf; /* Squelch compiler warnings on some platforms for */
+struct rtentry; /* declarations in <net/if.h> */
+#include <net/if.h>
+#include <netinet/in.h>
+
+#include <ctype.h>
+#include <errno.h>
+#include <memory.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <unistd.h>
+
+#include "pcap-int.h"
+
+#ifdef HAVE_OS_PROTO_H
+#include "os-proto.h"
+#endif
+
+/*
+ * Get a list of all interfaces that are up and that we can open.
+ * Returns -1 on error, 0 otherwise.
+ * The list, as returned through "alldevsp", may be null if no interfaces
+ * were up and could be opened.
+ *
+ * This is the implementation used on platforms that have SIOCLGIFCONF
+ * but don't have "getifaddrs()". (Solaris 8 and later; we use
+ * SIOCLGIFCONF rather than SIOCGIFCONF in order to get IPv6 addresses.)
+ */
+int
+pcap_findalldevs(pcap_if_t **alldevsp, char *errbuf)
+{
+ pcap_if_t *devlist = NULL;
+ register int fd4, fd6, fd;
+ register struct lifreq *ifrp, *ifend;
+ struct lifnum ifn;
+ struct lifconf ifc;
+ char *buf = NULL;
+ unsigned buf_size;
+ struct lifreq ifrflags, ifrnetmask, ifrbroadaddr, ifrdstaddr;
+ struct sockaddr *netmask, *broadaddr, *dstaddr;
+ int ret = 0;
+
+ /*
+ * Create a socket from which to fetch the list of interfaces,
+ * and from which to fetch IPv4 information.
+ */
+ fd4 = socket(AF_INET, SOCK_DGRAM, 0);
+ if (fd4 < 0) {
+ (void)snprintf(errbuf, PCAP_ERRBUF_SIZE,
+ "socket: %s", pcap_strerror(errno));
+ return (-1);
+ }
+
+ /*
+ * Create a socket from which to fetch IPv6 information.
+ */
+ fd6 = socket(AF_INET6, SOCK_DGRAM, 0);
+ if (fd6 < 0) {
+ (void)snprintf(errbuf, PCAP_ERRBUF_SIZE,
+ "socket: %s", pcap_strerror(errno));
+ (void)close(fd4);
+ return (-1);
+ }
+
+ /*
+ * How many entries will SIOCGLIFCONF return?
+ */
+ ifn.lifn_family = AF_UNSPEC;
+ ifn.lifn_flags = 0;
+ ifn.lifn_count = 0;
+ if (ioctl(fd4, SIOCGLIFNUM, (char *)&ifn) < 0) {
+ (void)snprintf(errbuf, PCAP_ERRBUF_SIZE,
+ "SIOCGLIFNUM: %s", pcap_strerror(errno));
+ (void)close(fd6);
+ (void)close(fd4);
+ return (-1);
+ }
+
+ /*
+ * Allocate a buffer for those entries.
+ */
+ buf_size = ifn.lifn_count * sizeof (struct lifreq);
+ buf = malloc(buf_size);
+ if (buf == NULL) {
+ (void)snprintf(errbuf, PCAP_ERRBUF_SIZE,
+ "malloc: %s", pcap_strerror(errno));
+ (void)close(fd6);
+ (void)close(fd4);
+ return (-1);
+ }
+
+ /*
+ * Get the entries.
+ */
+ ifc.lifc_len = buf_size;
+ ifc.lifc_buf = buf;
+ ifc.lifc_family = AF_UNSPEC;
+ ifc.lifc_flags = 0;
+ memset(buf, 0, buf_size);
+ if (ioctl(fd4, SIOCGLIFCONF, (char *)&ifc) < 0) {
+ (void)snprintf(errbuf, PCAP_ERRBUF_SIZE,
+ "SIOCGLIFCONF: %s", pcap_strerror(errno));
+ (void)close(fd6);
+ (void)close(fd4);
+ free(buf);
+ return (-1);
+ }
+
+ /*
+ * Loop over the entries.
+ */
+ ifrp = (struct lifreq *)buf;
+ ifend = (struct lifreq *)(buf + ifc.lifc_len);
+
+ for (; ifrp < ifend; ifrp++) {
+ /*
+ * IPv6 or not?
+ */
+ if (((struct sockaddr *)&ifrp->lifr_addr)->sa_family == AF_INET6)
+ fd = fd6;
+ else
+ fd = fd4;
+
+ /*
+ * Get the flags for this interface, and skip it if it's
+ * not up.
+ */
+ strncpy(ifrflags.lifr_name, ifrp->lifr_name,
+ sizeof(ifrflags.lifr_name));
+ if (ioctl(fd, SIOCGLIFFLAGS, (char *)&ifrflags) < 0) {
+ if (errno == ENXIO)
+ continue;
+ (void)snprintf(errbuf, PCAP_ERRBUF_SIZE,
+ "SIOCGLIFFLAGS: %.*s: %s",
+ (int)sizeof(ifrflags.lifr_name),
+ ifrflags.lifr_name,
+ pcap_strerror(errno));
+ ret = -1;
+ break;
+ }
+ if (!(ifrflags.lifr_flags & IFF_UP))
+ continue;
+
+ /*
+ * Get the netmask for this address on this interface.
+ */
+ strncpy(ifrnetmask.lifr_name, ifrp->lifr_name,
+ sizeof(ifrnetmask.lifr_name));
+ memcpy(&ifrnetmask.lifr_addr, &ifrp->lifr_addr,
+ sizeof(ifrnetmask.lifr_addr));
+ if (ioctl(fd, SIOCGLIFNETMASK, (char *)&ifrnetmask) < 0) {
+ if (errno == EADDRNOTAVAIL) {
+ /*
+ * Not available.
+ */
+ netmask = NULL;
+ } else {
+ (void)snprintf(errbuf, PCAP_ERRBUF_SIZE,
+ "SIOCGLIFNETMASK: %.*s: %s",
+ (int)sizeof(ifrnetmask.lifr_name),
+ ifrnetmask.lifr_name,
+ pcap_strerror(errno));
+ ret = -1;
+ break;
+ }
+ } else
+ netmask = (struct sockaddr *)&ifrnetmask.lifr_addr;
+
+ /*
+ * Get the broadcast address for this address on this
+ * interface (if any).
+ */
+ if (ifrflags.lifr_flags & IFF_BROADCAST) {
+ strncpy(ifrbroadaddr.lifr_name, ifrp->lifr_name,
+ sizeof(ifrbroadaddr.lifr_name));
+ memcpy(&ifrbroadaddr.lifr_addr, &ifrp->lifr_addr,
+ sizeof(ifrbroadaddr.lifr_addr));
+ if (ioctl(fd, SIOCGLIFBRDADDR,
+ (char *)&ifrbroadaddr) < 0) {
+ if (errno == EADDRNOTAVAIL) {
+ /*
+ * Not available.
+ */
+ broadaddr = NULL;
+ } else {
+ (void)snprintf(errbuf, PCAP_ERRBUF_SIZE,
+ "SIOCGLIFBRDADDR: %.*s: %s",
+ (int)sizeof(ifrbroadaddr.lifr_name),
+ ifrbroadaddr.lifr_name,
+ pcap_strerror(errno));
+ ret = -1;
+ break;
+ }
+ } else
+ broadaddr = (struct sockaddr *)&ifrbroadaddr.lifr_broadaddr;
+ } else {
+ /*
+ * Not a broadcast interface, so no broadcast
+ * address.
+ */
+ broadaddr = NULL;
+ }
+
+ /*
+ * Get the destination address for this address on this
+ * interface (if any).
+ */
+ if (ifrflags.lifr_flags & IFF_POINTOPOINT) {
+ strncpy(ifrdstaddr.lifr_name, ifrp->lifr_name,
+ sizeof(ifrdstaddr.lifr_name));
+ memcpy(&ifrdstaddr.lifr_addr, &ifrp->lifr_addr,
+ sizeof(ifrdstaddr.lifr_addr));
+ if (ioctl(fd, SIOCGLIFDSTADDR,
+ (char *)&ifrdstaddr) < 0) {
+ if (errno == EADDRNOTAVAIL) {
+ /*
+ * Not available.
+ */
+ dstaddr = NULL;
+ } else {
+ (void)snprintf(errbuf, PCAP_ERRBUF_SIZE,
+ "SIOCGLIFDSTADDR: %.*s: %s",
+ (int)sizeof(ifrdstaddr.lifr_name),
+ ifrdstaddr.lifr_name,
+ pcap_strerror(errno));
+ ret = -1;
+ break;
+ }
+ } else
+ dstaddr = (struct sockaddr *)&ifrdstaddr.lifr_dstaddr;
+ } else
+ dstaddr = NULL;
+
+ /*
+ * Add information for this address to the list.
+ */
+ if (add_addr_to_iflist(&devlist, ifrp->lifr_name,
+ ifrflags.lifr_flags, (struct sockaddr *)&ifrp->lifr_addr,
+ sizeof (struct sockaddr_storage),
+ netmask, sizeof (struct sockaddr_storage),
+ broadaddr, sizeof (struct sockaddr_storage),
+ dstaddr, sizeof (struct sockaddr_storage), errbuf) < 0) {
+ ret = -1;
+ break;
+ }
+ }
+ free(buf);
+ (void)close(fd6);
+ (void)close(fd4);
+
+ if (ret != -1) {
+ /*
+ * We haven't had any errors yet; do any platform-specific
+ * operations to add devices.
+ */
+ if (pcap_platform_finddevs(&devlist, errbuf) < 0)
+ ret = -1;
+ }
+
+ if (ret == -1) {
+ /*
+ * We had an error; free the list we've been constructing.
+ */
+ if (devlist != NULL) {
+ pcap_freealldevs(devlist);
+ devlist = NULL;
+ }
+ }
+
+ *alldevsp = devlist;
+ return (ret);
+}
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