Virgin import of LBL traceroute v1.4a12

1 files changed, 180 insertions, 0 deletions

diff --git a/contrib/traceroute/ifaddrlist.c b/contrib/traceroute/ifaddrlist.c
new file mode 100644
index 0000000..5ac0f3d
--- /dev/null
+++ b/contrib/traceroute/ifaddrlist.c
@@ -0,0 +1,180 @@
+/*
+ * Copyright (c) 1997, 1998, 1999, 2000
+ *	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[] =
+    "@(#) $Id: ifaddrlist.c,v 1.9 2000/11/23 20:01:55 leres Exp $ (LBL)";
+#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 */
+
+#if __STDC__
+struct mbuf;
+struct rtentry;
+#endif
+
+#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 "gnuc.h"
+#ifdef HAVE_OS_PROTO_H
+#include "os-proto.h"
+#endif
+
+#include "ifaddrlist.h"
+
+/*
+ * Return the interface list
+ */
+int
+ifaddrlist(register struct ifaddrlist **ipaddrp, register char *errbuf)
+{
+	register int fd, nipaddr;
+#ifdef HAVE_SOCKADDR_SA_LEN
+	register int n;
+#endif
+	register struct ifreq *ifrp, *ifend, *ifnext, *mp;
+	register struct sockaddr_in *sin;
+	register struct ifaddrlist *al;
+	struct ifconf ifc;
+	struct ifreq ibuf[(32 * 1024) / sizeof(struct ifreq)], ifr;
+#define MAX_IPADDR (sizeof(ibuf) / sizeof(ibuf[0]))
+	static struct ifaddrlist ifaddrlist[MAX_IPADDR];
+	char device[sizeof(ifr.ifr_name) + 1];
+
+	fd = socket(AF_INET, SOCK_DGRAM, 0);
+	if (fd < 0) {
+		(void)sprintf(errbuf, "socket: %s", strerror(errno));
+		return (-1);
+	}
+	ifc.ifc_len = sizeof(ibuf);
+	ifc.ifc_buf = (caddr_t)ibuf;
+
+	if (ioctl(fd, SIOCGIFCONF, (char *)&ifc) < 0 ||
+	    ifc.ifc_len < sizeof(struct ifreq)) {
+		if (errno == EINVAL)
+			(void)sprintf(errbuf,
+			    "SIOCGIFCONF: ifreq struct too small (%d bytes)",
+			    sizeof(ibuf));
+		else
+			(void)sprintf(errbuf, "SIOCGIFCONF: %s",
+			    strerror(errno));
+		(void)close(fd);
+		return (-1);
+	}
+	ifrp = ibuf;
+	ifend = (struct ifreq *)((char *)ibuf + ifc.ifc_len);
+
+	al = ifaddrlist;
+	mp = NULL;
+	nipaddr = 0;
+	for (; ifrp < ifend; ifrp = ifnext) {
+#ifdef HAVE_SOCKADDR_SA_LEN
+		n = ifrp->ifr_addr.sa_len + sizeof(ifrp->ifr_name);
+		if (n < sizeof(*ifrp))
+			ifnext = ifrp + 1;
+		else
+			ifnext = (struct ifreq *)((char *)ifrp + n);
+		if (ifrp->ifr_addr.sa_family != AF_INET)
+			continue;
+#else
+		ifnext = ifrp + 1;
+#endif
+		/*
+		 * Need a template to preserve address info that is
+		 * used below to locate the next entry.  (Otherwise,
+		 * SIOCGIFFLAGS stomps over it because the requests
+		 * are returned in a union.)
+		 */
+		strncpy(ifr.ifr_name, ifrp->ifr_name, sizeof(ifr.ifr_name));
+		if (ioctl(fd, SIOCGIFFLAGS, (char *)&ifr) < 0) {
+			if (errno == ENXIO)
+				continue;
+			(void)sprintf(errbuf, "SIOCGIFFLAGS: %.*s: %s",
+			    (int)sizeof(ifr.ifr_name), ifr.ifr_name,
+			    strerror(errno));
+			(void)close(fd);
+			return (-1);
+		}
+
+		/* Must be up */
+		if ((ifr.ifr_flags & IFF_UP) == 0)
+			continue;
+
+
+		(void)strncpy(device, ifr.ifr_name, sizeof(ifr.ifr_name));
+		device[sizeof(device) - 1] = '\0';
+#ifdef sun
+		/* Ignore sun virtual interfaces */
+		if (strchr(device, ':') != NULL)
+			continue;
+#endif
+		if (ioctl(fd, SIOCGIFADDR, (char *)&ifr) < 0) {
+			(void)sprintf(errbuf, "SIOCGIFADDR: %s: %s",
+			    device, strerror(errno));
+			(void)close(fd);
+			return (-1);
+		}
+
+		if (nipaddr >= MAX_IPADDR) {
+			(void)sprintf(errbuf, "Too many interfaces (%d)",
+			    MAX_IPADDR);
+			(void)close(fd);
+			return (-1);
+		}
+		sin = (struct sockaddr_in *)&ifr.ifr_addr;
+		al->addr = sin->sin_addr.s_addr;
+		al->device = strdup(device);
+		++al;
+		++nipaddr;
+	}
+	(void)close(fd);
+
+	*ipaddrp = ifaddrlist;
+	return (nipaddr);
+}