BSD 4.4 Lite sbin -> usr.sbin Sources

Note: The sources for XNSrouted and routed are being imported to usr.sbin
instead of sbin.

1 files changed, 274 insertions, 0 deletions

diff --git a/usr.sbin/XNSrouted/startup.c b/usr.sbin/XNSrouted/startup.c
new file mode 100644
index 0000000..bcb5615
--- /dev/null
+++ b/usr.sbin/XNSrouted/startup.c
@@ -0,0 +1,274 @@
+/*
+ * Copyright (c) 1985, 1993
+ *	The Regents of the University of California.  All rights reserved.
+ *
+ * This file includes significant work done at Cornell University by
+ * Bill Nesheim.  That work included by permission.
+ *
+ * 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 University of
+ *	California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ *    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 char sccsid[] = "@(#)startup.c	8.1 (Berkeley) 6/5/93";
+#endif /* not lint */
+
+/*
+ * Routing Table Management Daemon
+ */
+#include "defs.h"
+
+#include <sys/param.h>
+#include <sys/ioctl.h>
+#include <sys/sysctl.h>
+
+#include <net/if.h>
+#include <net/if_dl.h>
+
+#include <nlist.h>
+#include <stdlib.h>
+
+struct	interface *ifnet;
+int	lookforinterfaces = 1;
+int	performnlist = 1;
+int	gateway = 0;
+int	externalinterfaces = 0;		/* # of remote and local interfaces */
+char ether_broadcast_addr[6] = {0xff, 0xff, 0xff, 0xff, 0xff, 0xff};
+
+
+void
+quit(s)
+	char *s;
+{
+	extern int errno;
+	int sverrno = errno;
+
+	(void) fprintf(stderr, "route: ");
+	if (s)
+		(void) fprintf(stderr, "%s: ", s);
+	(void) fprintf(stderr, "%s\n", strerror(sverrno));
+	exit(1);
+	/* NOTREACHED */
+}
+
+struct rt_addrinfo info;
+/* Sleazy use of local variables throughout file, warning!!!! */
+#define netmask	info.rti_info[RTAX_NETMASK]
+#define ifaaddr	info.rti_info[RTAX_IFA]
+#define brdaddr	info.rti_info[RTAX_BRD]
+
+#define ROUNDUP(a) \
+	((a) > 0 ? (1 + (((a) - 1) | (sizeof(long) - 1))) : sizeof(long))
+#define ADVANCE(x, n) (x += ROUNDUP((n)->sa_len))
+
+void
+rt_xaddrs(cp, cplim, rtinfo)
+	register caddr_t cp, cplim;
+	register struct rt_addrinfo *rtinfo;
+{
+	register struct sockaddr *sa;
+	register int i;
+
+	bzero(rtinfo->rti_info, sizeof(rtinfo->rti_info));
+	for (i = 0; (i < RTAX_MAX) && (cp < cplim); i++) {
+		if ((rtinfo->rti_addrs & (1 << i)) == 0)
+			continue;
+		rtinfo->rti_info[i] = sa = (struct sockaddr *)cp;
+		ADVANCE(cp, sa);
+	}
+}
+
+/*
+ * Find the network interfaces which have configured themselves.
+ * If the interface is present but not yet up (for example an
+ * ARPANET IMP), set the lookforinterfaces flag so we'll
+ * come back later and look again.
+ */
+ifinit()
+{
+	struct interface ifs, *ifp;
+	size_t needed;
+	int mib[6], no_nsaddr = 0, flags = 0;
+	char *buf, *cplim, *cp;
+	register struct if_msghdr *ifm;
+	register struct ifa_msghdr *ifam;
+	struct sockaddr_dl *sdl;
+	u_long i;
+
+        mib[0] = CTL_NET;
+        mib[1] = PF_ROUTE;
+        mib[2] = 0;
+        mib[3] = AF_NS;
+        mib[4] = NET_RT_IFLIST;
+        mib[5] = 0;
+        if (sysctl(mib, 6, NULL, &needed, NULL, 0) < 0)
+                quit("route-sysctl-estimate");
+	if ((buf = malloc(needed)) == NULL)
+		quit("malloc");
+        if (sysctl(mib, 6, buf, &needed, NULL, 0) < 0)
+	lookforinterfaces = 0;
+	cplim = buf + needed;
+	for (cp = buf; cp < cplim; cp += ifm->ifm_msglen) {
+		ifm = (struct if_msghdr *)cp;
+		if (ifm->ifm_type == RTM_IFINFO) {
+			bzero(&ifs, sizeof(ifs));
+			ifs.int_flags = flags = ifm->ifm_flags | IFF_INTERFACE;
+			if ((flags & IFF_UP) == 0 || no_nsaddr)
+				lookforinterfaces = 1;
+			sdl = (struct sockaddr_dl *) (ifm + 1);
+			sdl->sdl_data[sdl->sdl_nlen] = 0;
+			no_nsaddr = 1;
+			continue;
+		}
+		if (ifm->ifm_type != RTM_NEWADDR)
+			quit("ifinit: out of sync");
+		if ((flags & IFF_UP) == 0)
+			continue;
+		ifam = (struct ifa_msghdr *)ifm;
+		info.rti_addrs = ifam->ifam_addrs;
+		rt_xaddrs((char *)(ifam + 1), cp + ifam->ifam_msglen, &info);
+		if (ifaaddr == 0) {
+			syslog(LOG_ERR, "%s: (get addr)", sdl->sdl_data);
+			continue;
+		}
+		ifs.int_addr = *ifaaddr;
+		if (ifs.int_addr.sa_family != AF_NS)
+			continue;
+		no_nsaddr = 0;
+		if (ifs.int_flags & IFF_POINTOPOINT) {
+			if (brdaddr == 0) {
+				syslog(LOG_ERR, "%s: (get dstaddr)",
+					sdl->sdl_data);
+				continue;
+			}
+			if (brdaddr->sa_family == AF_UNSPEC) {
+				lookforinterfaces = 1;
+				continue;
+			}
+			ifs.int_dstaddr = *brdaddr;
+		}
+		if (ifs.int_flags & IFF_BROADCAST) {
+			if (brdaddr == 0) {
+				syslog(LOG_ERR, "%s: (get broadaddr)",
+					sdl->sdl_data);
+				continue;
+			}
+			ifs.int_dstaddr = *brdaddr;
+		}
+		/* 
+		 * already known to us? 
+		 * what makes a POINTOPOINT if unique is its dst addr,
+		 * NOT its source address 
+		 */
+		if ( ((ifs.int_flags & IFF_POINTOPOINT) &&
+			if_ifwithdstaddr(&ifs.int_dstaddr)) ||
+			( ((ifs.int_flags & IFF_POINTOPOINT) == 0) &&
+			if_ifwithaddr(&ifs.int_addr)))
+			continue;
+		/* no one cares about software loopback interfaces */
+		if (ifs.int_flags & IFF_LOOPBACK)
+			continue;
+		ifp = (struct interface *)
+			malloc(sdl->sdl_nlen + 1 + sizeof(ifs));
+		if (ifp == 0) {
+			syslog(LOG_ERR, "XNSrouted: out of memory\n");
+			lookforinterfaces = 1;
+			break;
+		}
+		*ifp = ifs;
+		/*
+		 * Count the # of directly connected networks
+		 * and point to point links which aren't looped
+		 * back to ourself.  This is used below to
+		 * decide if we should be a routing ``supplier''.
+		 */
+		if ((ifs.int_flags & IFF_POINTOPOINT) == 0 ||
+		    if_ifwithaddr(&ifs.int_dstaddr) == 0)
+			externalinterfaces++;
+		/*
+		 * If we have a point-to-point link, we want to act
+		 * as a supplier even if it's our only interface,
+		 * as that's the only way our peer on the other end
+		 * can tell that the link is up.
+		 */
+		if ((ifs.int_flags & IFF_POINTOPOINT) && supplier < 0)
+			supplier = 1;
+		ifp->int_name = (char *)(ifp + 1);
+		strcpy(ifp->int_name, sdl->sdl_data);
+		ifp->int_metric = ifam->ifam_metric;
+		ifp->int_next = ifnet;
+		ifnet = ifp;
+		traceinit(ifp);
+		addrouteforif(ifp);
+	}
+	if (externalinterfaces > 1 && supplier < 0)
+		supplier = 1;
+	free(buf);
+}
+
+addrouteforif(ifp)
+	struct interface *ifp;
+{
+	struct sockaddr_ns net;
+	struct sockaddr *dst;
+	int state, metric;
+	struct rt_entry *rt;
+
+	if (ifp->int_flags & IFF_POINTOPOINT) {
+		int (*match)();
+		register struct interface *ifp2 = ifnet;
+		register struct interface *ifprev = ifnet;
+		
+		dst = &ifp->int_dstaddr;
+
+		/* Search for interfaces with the same net */
+		ifp->int_sq.n = ifp->int_sq.p = &(ifp->int_sq);
+		match = afswitch[dst->sa_family].af_netmatch;
+		if (match)
+		for (ifp2 = ifnet; ifp2; ifp2 =ifp2->int_next) {
+			if (ifp->int_flags & IFF_POINTOPOINT == 0)
+				continue;
+			if ((*match)(&ifp2->int_dstaddr,&ifp->int_dstaddr)) {
+				insque(&ifp2->int_sq,&ifp->int_sq);
+				break;
+			}
+		}
+	} else {
+		dst = &ifp->int_broadaddr;
+	}
+	rt = rtlookup(dst);
+	if (rt)
+		rtdelete(rt);
+	if (tracing)
+		fprintf(stderr, "Adding route to interface %s\n", ifp->int_name);
+	if (ifp->int_transitions++ > 0)
+		syslog(LOG_ERR, "re-installing interface %s", ifp->int_name);
+	rtadd(dst, &ifp->int_addr, ifp->int_metric,
+		ifp->int_flags & (IFF_INTERFACE|IFF_PASSIVE|IFF_REMOTE));
+}
+