+++ /dev/null
-/* -*- 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.
- */
-
-#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
-
-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 <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
-
-/*
- * UN*X.
- */
-/*
- * We don't just fetch the entire list of devices, search for the
- * particular device, and use its first IPv4 address, as that's too
- * much work to get just one device's netmask.
- */
-int
-pcap_lookupnet(device, netp, maskp, errbuf)
- register const char *device;
- register bpf_u_int32 *netp, *maskp;
- register char *errbuf;
-{
- register int fd;
- register struct sockaddr_in *sin4;
- struct ifreq ifr;
-
- /*
- * The pseudo-device "any" listens on all interfaces and therefore
- * has the network address and -mask "0.0.0.0" therefore catching
- * all traffic. Using NULL for the interface is the same as "any".
- */
- if (!device || strcmp(device, "any") == 0
-#ifdef HAVE_DAG_API
- || strstr(device, "dag") != NULL
-#endif
-#ifdef HAVE_SEPTEL_API
- || strstr(device, "septel") != NULL
-#endif
-#ifdef PCAP_SUPPORT_BT
- || strstr(device, "bluetooth") != NULL
-#endif
-#ifdef PCAP_SUPPORT_USB
- || strstr(device, "usbmon") != NULL
-#endif
-#ifdef HAVE_SNF_API
- || strstr(device, "snf") != NULL
-#endif
-#ifdef PCAP_SUPPORT_NETMAP
- || strncmp(device, "netmap:", 7) == 0
- || strncmp(device, "vale", 4) == 0
-#endif
- ) {
- *netp = *maskp = 0;
- return 0;
- }
-
- fd = socket(AF_INET, SOCK_DGRAM, 0);
- if (fd < 0) {
- (void)pcap_snprintf(errbuf, PCAP_ERRBUF_SIZE, "socket: %s",
- pcap_strerror(errno));
- return (-1);
- }
- memset(&ifr, 0, sizeof(ifr));
-#ifdef linux
- /* XXX Work around Linux kernel bug */
- ifr.ifr_addr.sa_family = AF_INET;
-#endif
- (void)strlcpy(ifr.ifr_name, device, sizeof(ifr.ifr_name));
- if (ioctl(fd, SIOCGIFADDR, (char *)&ifr) < 0) {
- if (errno == EADDRNOTAVAIL) {
- (void)pcap_snprintf(errbuf, PCAP_ERRBUF_SIZE,
- "%s: no IPv4 address assigned", device);
- } else {
- (void)pcap_snprintf(errbuf, PCAP_ERRBUF_SIZE,
- "SIOCGIFADDR: %s: %s",
- device, pcap_strerror(errno));
- }
- (void)close(fd);
- return (-1);
- }
- sin4 = (struct sockaddr_in *)&ifr.ifr_addr;
- *netp = sin4->sin_addr.s_addr;
- memset(&ifr, 0, sizeof(ifr));
-#ifdef linux
- /* XXX Work around Linux kernel bug */
- ifr.ifr_addr.sa_family = AF_INET;
-#endif
- (void)strlcpy(ifr.ifr_name, device, sizeof(ifr.ifr_name));
- if (ioctl(fd, SIOCGIFNETMASK, (char *)&ifr) < 0) {
- (void)pcap_snprintf(errbuf, PCAP_ERRBUF_SIZE,
- "SIOCGIFNETMASK: %s: %s", device, pcap_strerror(errno));
- (void)close(fd);
- return (-1);
- }
- (void)close(fd);
- *maskp = sin4->sin_addr.s_addr;
- if (*maskp == 0) {
- if (IN_CLASSA(*netp))
- *maskp = IN_CLASSA_NET;
- else if (IN_CLASSB(*netp))
- *maskp = IN_CLASSB_NET;
- else if (IN_CLASSC(*netp))
- *maskp = IN_CLASSC_NET;
- else {
- (void)pcap_snprintf(errbuf, PCAP_ERRBUF_SIZE,
- "inet class for 0x%x unknown", *netp);
- return (-1);
- }
- }
- *netp &= *maskp;
- return (0);
-}
pcap_freealldevs(alldevs);
return (ret);
}
+
+/*
+ * We don't just fetch the entire list of devices, search for the
+ * particular device, and use its first IPv4 address, as that's too
+ * much work to get just one device's netmask.
+ *
+ * If we had an API to get attributes for a given device, we could
+ * use that.
+ */
+int
+pcap_lookupnet(device, netp, maskp, errbuf)
+ register const char *device;
+ register bpf_u_int32 *netp, *maskp;
+ register char *errbuf;
+{
+ register int fd;
+ register struct sockaddr_in *sin4;
+ struct ifreq ifr;
+
+ /*
+ * The pseudo-device "any" listens on all interfaces and therefore
+ * has the network address and -mask "0.0.0.0" therefore catching
+ * all traffic. Using NULL for the interface is the same as "any".
+ */
+ if (!device || strcmp(device, "any") == 0
+#ifdef HAVE_DAG_API
+ || strstr(device, "dag") != NULL
+#endif
+#ifdef HAVE_SEPTEL_API
+ || strstr(device, "septel") != NULL
+#endif
+#ifdef PCAP_SUPPORT_BT
+ || strstr(device, "bluetooth") != NULL
+#endif
+#ifdef PCAP_SUPPORT_USB
+ || strstr(device, "usbmon") != NULL
+#endif
+#ifdef HAVE_SNF_API
+ || strstr(device, "snf") != NULL
+#endif
+#ifdef PCAP_SUPPORT_NETMAP
+ || strncmp(device, "netmap:", 7) == 0
+ || strncmp(device, "vale", 4) == 0
+#endif
+ ) {
+ *netp = *maskp = 0;
+ return 0;
+ }
+
+ fd = socket(AF_INET, SOCK_DGRAM, 0);
+ if (fd < 0) {
+ (void)pcap_snprintf(errbuf, PCAP_ERRBUF_SIZE, "socket: %s",
+ pcap_strerror(errno));
+ return (-1);
+ }
+ memset(&ifr, 0, sizeof(ifr));
+#ifdef linux
+ /* XXX Work around Linux kernel bug */
+ ifr.ifr_addr.sa_family = AF_INET;
+#endif
+ (void)strlcpy(ifr.ifr_name, device, sizeof(ifr.ifr_name));
+ if (ioctl(fd, SIOCGIFADDR, (char *)&ifr) < 0) {
+ if (errno == EADDRNOTAVAIL) {
+ (void)pcap_snprintf(errbuf, PCAP_ERRBUF_SIZE,
+ "%s: no IPv4 address assigned", device);
+ } else {
+ (void)pcap_snprintf(errbuf, PCAP_ERRBUF_SIZE,
+ "SIOCGIFADDR: %s: %s",
+ device, pcap_strerror(errno));
+ }
+ (void)close(fd);
+ return (-1);
+ }
+ sin4 = (struct sockaddr_in *)&ifr.ifr_addr;
+ *netp = sin4->sin_addr.s_addr;
+ memset(&ifr, 0, sizeof(ifr));
+#ifdef linux
+ /* XXX Work around Linux kernel bug */
+ ifr.ifr_addr.sa_family = AF_INET;
+#endif
+ (void)strlcpy(ifr.ifr_name, device, sizeof(ifr.ifr_name));
+ if (ioctl(fd, SIOCGIFNETMASK, (char *)&ifr) < 0) {
+ (void)pcap_snprintf(errbuf, PCAP_ERRBUF_SIZE,
+ "SIOCGIFNETMASK: %s: %s", device, pcap_strerror(errno));
+ (void)close(fd);
+ return (-1);
+ }
+ (void)close(fd);
+ *maskp = sin4->sin_addr.s_addr;
+ if (*maskp == 0) {
+ if (IN_CLASSA(*netp))
+ *maskp = IN_CLASSA_NET;
+ else if (IN_CLASSB(*netp))
+ *maskp = IN_CLASSB_NET;
+ else if (IN_CLASSC(*netp))
+ *maskp = IN_CLASSC_NET;
+ else {
+ (void)pcap_snprintf(errbuf, PCAP_ERRBUF_SIZE,
+ "inet class for 0x%x unknown", *netp);
+ return (-1);
+ }
+ }
+ *netp &= *maskp;
+ return (0);
+}
#endif
#ifdef HAVE_REMOTE
projects / libpcap / commitdiff
