summaryrefslogtreecommitdiff
path: root/sbin/routed/startup.c
diff options
context:
space:
mode:
Diffstat (limited to 'sbin/routed/startup.c')
-rw-r--r--sbin/routed/startup.c486
1 files changed, 0 insertions, 486 deletions
diff --git a/sbin/routed/startup.c b/sbin/routed/startup.c
deleted file mode 100644
index f88d5935c025..000000000000
--- a/sbin/routed/startup.c
+++ /dev/null
@@ -1,486 +0,0 @@
-/*
- * Copyright (c) 1983, 1988 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 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 5.19 (Berkeley) 2/28/91";
-#endif /* not lint */
-
-/*
- * Routing Table Management Daemon
- */
-#include "defs.h"
-#include <sys/ioctl.h>
-#include <net/if.h>
-#include <syslog.h>
-#include <stdlib.h>
-#include "pathnames.h"
-
-struct interface *ifnet;
-struct interface **ifnext = &ifnet;
-int lookforinterfaces = 1;
-int externalinterfaces = 0; /* # of remote and local interfaces */
-int foundloopback; /* valid flag for loopaddr */
-struct sockaddr loopaddr; /* our address on loopback */
-
-/*
- * 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;
- int s;
- char buf[BUFSIZ], *cp, *cplim;
- struct ifconf ifc;
- struct ifreq ifreq, *ifr;
- struct sockaddr_in *sin;
- u_long i;
-
- if ((s = socket(AF_INET, SOCK_DGRAM, 0)) < 0) {
- syslog(LOG_ERR, "socket: %m");
- close(s);
- return;
- }
- ifc.ifc_len = sizeof (buf);
- ifc.ifc_buf = buf;
- if (ioctl(s, SIOCGIFCONF, (char *)&ifc) < 0) {
- syslog(LOG_ERR, "ioctl (get interface configuration)");
- close(s);
- return;
- }
- ifr = ifc.ifc_req;
- lookforinterfaces = 0;
-#ifdef RTM_ADD
-#define max(a, b) (a > b ? a : b)
-#define size(p) max((p).sa_len, sizeof(p))
-#else
-#define size(p) (sizeof (p))
-#endif
- cplim = buf + ifc.ifc_len; /*skip over if's with big ifr_addr's */
- for (cp = buf; cp < cplim;
- cp += sizeof (ifr->ifr_name) + size(ifr->ifr_addr)) {
- ifr = (struct ifreq *)cp;
- bzero((char *)&ifs, sizeof(ifs));
- ifs.int_addr = ifr->ifr_addr;
- ifreq = *ifr;
- if (ioctl(s, SIOCGIFFLAGS, (char *)&ifreq) < 0) {
- syslog(LOG_ERR, "%s: ioctl (get interface flags)",
- ifr->ifr_name);
- continue;
- }
- ifs.int_flags = ifreq.ifr_flags | IFF_INTERFACE;
- if ((ifs.int_flags & IFF_UP) == 0 ||
- ifr->ifr_addr.sa_family == AF_UNSPEC) {
- lookforinterfaces = 1;
- continue;
- }
- /* argh, this'll have to change sometime */
- if (ifs.int_addr.sa_family != AF_INET)
- continue;
- if (ifs.int_flags & IFF_POINTOPOINT) {
- if (ioctl(s, SIOCGIFDSTADDR, (char *)&ifreq) < 0) {
- syslog(LOG_ERR, "%s: ioctl (get dstaddr)",
- ifr->ifr_name);
- continue;
- }
- if (ifr->ifr_addr.sa_family == AF_UNSPEC) {
- lookforinterfaces = 1;
- continue;
- }
- ifs.int_dstaddr = ifreq.ifr_dstaddr;
- }
- /*
- * already known to us?
- * This allows multiple point-to-point links
- * to share a source address (possibly with one
- * other link), but assumes that there will not be
- * multiple links with the same destination address.
- */
- if (ifs.int_flags & IFF_POINTOPOINT) {
- if (if_ifwithdstaddr(&ifs.int_dstaddr))
- continue;
- } else if (if_ifwithaddr(&ifs.int_addr))
- continue;
- if (ifs.int_flags & IFF_LOOPBACK) {
- ifs.int_flags |= IFF_PASSIVE;
- foundloopback = 1;
- loopaddr = ifs.int_addr;
- for (ifp = ifnet; ifp; ifp = ifp->int_next)
- if (ifp->int_flags & IFF_POINTOPOINT)
- add_ptopt_localrt(ifp);
- }
- if (ifs.int_flags & IFF_BROADCAST) {
- if (ioctl(s, SIOCGIFBRDADDR, (char *)&ifreq) < 0) {
- syslog(LOG_ERR, "%s: ioctl (get broadaddr)",
- ifr->ifr_name);
- continue;
- }
-#ifndef sun
- ifs.int_broadaddr = ifreq.ifr_broadaddr;
-#else
- ifs.int_broadaddr = ifreq.ifr_addr;
-#endif
- }
-#ifdef SIOCGIFMETRIC
- if (ioctl(s, SIOCGIFMETRIC, (char *)&ifreq) < 0) {
- syslog(LOG_ERR, "%s: ioctl (get metric)",
- ifr->ifr_name);
- ifs.int_metric = 0;
- } else
- ifs.int_metric = ifreq.ifr_metric;
-#else
- ifs.int_metric = 0;
-#endif
- /*
- * Use a minimum metric of one;
- * treat the interface metric (default 0)
- * as an increment to the hop count of one.
- */
- ifs.int_metric++;
- if (ioctl(s, SIOCGIFNETMASK, (char *)&ifreq) < 0) {
- syslog(LOG_ERR, "%s: ioctl (get netmask)",
- ifr->ifr_name);
- continue;
- }
- sin = (struct sockaddr_in *)&ifreq.ifr_addr;
- ifs.int_subnetmask = ntohl(sin->sin_addr.s_addr);
- sin = (struct sockaddr_in *)&ifs.int_addr;
- i = ntohl(sin->sin_addr.s_addr);
- if (IN_CLASSA(i))
- ifs.int_netmask = IN_CLASSA_NET;
- else if (IN_CLASSB(i))
- ifs.int_netmask = IN_CLASSB_NET;
- else
- ifs.int_netmask = IN_CLASSC_NET;
- ifs.int_net = i & ifs.int_netmask;
- ifs.int_subnet = i & ifs.int_subnetmask;
- if (ifs.int_subnetmask != ifs.int_netmask)
- ifs.int_flags |= IFF_SUBNET;
- ifp = (struct interface *)malloc(sizeof (struct interface));
- if (ifp == 0) {
- printf("routed: out of memory\n");
- 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_LOOPBACK) == 0 &&
- ((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 = malloc(strlen(ifr->ifr_name) + 1);
- if (ifp->int_name == 0) {
- fprintf(stderr, "routed: ifinit: out of memory\n");
- syslog(LOG_ERR, "routed: ifinit: out of memory\n");
- close(s);
- return;
- }
- strcpy(ifp->int_name, ifr->ifr_name);
- *ifnext = ifp;
- ifnext = &ifp->int_next;
- traceinit(ifp);
- addrouteforif(ifp);
- }
- if (externalinterfaces > 1 && supplier < 0)
- supplier = 1;
- close(s);
-}
-
-/*
- * Add route for interface if not currently installed.
- * Create route to other end if a point-to-point link,
- * otherwise a route to this (sub)network.
- * INTERNET SPECIFIC.
- */
-addrouteforif(ifp)
- register struct interface *ifp;
-{
- struct sockaddr_in net;
- struct sockaddr *dst;
- int state;
- register struct rt_entry *rt;
-
- if (ifp->int_flags & IFF_POINTOPOINT)
- dst = &ifp->int_dstaddr;
- else {
- bzero((char *)&net, sizeof (net));
- net.sin_family = AF_INET;
- net.sin_addr = inet_makeaddr(ifp->int_subnet, INADDR_ANY);
- dst = (struct sockaddr *)&net;
- }
- rt = rtfind(dst);
- if (rt &&
- (rt->rt_state & (RTS_INTERFACE | RTS_INTERNAL)) == RTS_INTERFACE)
- return;
- if (rt)
- rtdelete(rt);
- /*
- * If interface on subnetted network,
- * install route to network as well.
- * This is meant for external viewers.
- */
- if ((ifp->int_flags & (IFF_SUBNET|IFF_POINTOPOINT)) == IFF_SUBNET) {
- struct in_addr subnet;
-
- subnet = net.sin_addr;
- net.sin_addr = inet_makeaddr(ifp->int_net, INADDR_ANY);
- rt = rtfind(dst);
- if (rt == 0)
- rtadd(dst, &ifp->int_addr, ifp->int_metric,
- ((ifp->int_flags & (IFF_INTERFACE|IFF_REMOTE)) |
- RTS_PASSIVE | RTS_INTERNAL | RTS_SUBNET));
- else if ((rt->rt_state & (RTS_INTERNAL|RTS_SUBNET)) ==
- (RTS_INTERNAL|RTS_SUBNET) &&
- ifp->int_metric < rt->rt_metric)
- rtchange(rt, &rt->rt_router, ifp->int_metric);
- net.sin_addr = subnet;
- }
- if (ifp->int_transitions++ > 0)
- syslog(LOG_ERR, "re-installing interface %s", ifp->int_name);
- state = ifp->int_flags &
- (IFF_INTERFACE | IFF_PASSIVE | IFF_REMOTE | IFF_SUBNET);
- if (ifp->int_flags & IFF_POINTOPOINT &&
- (ntohl(((struct sockaddr_in *)&ifp->int_dstaddr)->sin_addr.s_addr) &
- ifp->int_netmask) != ifp->int_net)
- state &= ~RTS_SUBNET;
- if (ifp->int_flags & IFF_LOOPBACK)
- state |= RTS_EXTERNAL;
- rtadd(dst, &ifp->int_addr, ifp->int_metric, state);
- if (ifp->int_flags & IFF_POINTOPOINT && foundloopback)
- add_ptopt_localrt(ifp);
-}
-
-/*
- * Add route to local end of point-to-point using loopback.
- * If a route to this network is being sent to neighbors on other nets,
- * mark this route as subnet so we don't have to propagate it too.
- */
-add_ptopt_localrt(ifp)
- register struct interface *ifp;
-{
- struct rt_entry *rt;
- struct sockaddr *dst;
- struct sockaddr_in net;
- int state;
-
- state = RTS_INTERFACE | RTS_PASSIVE;
-
- /* look for route to logical network */
- bzero((char *)&net, sizeof (net));
- net.sin_family = AF_INET;
- net.sin_addr = inet_makeaddr(ifp->int_net, INADDR_ANY);
- dst = (struct sockaddr *)&net;
- rt = rtfind(dst);
- if (rt && rt->rt_state & RTS_INTERNAL)
- state |= RTS_SUBNET;
-
- dst = &ifp->int_addr;
- if (rt = rtfind(dst)) {
- if (rt && rt->rt_state & RTS_INTERFACE)
- return;
- rtdelete(rt);
- }
- rtadd(dst, &loopaddr, 1, state);
-}
-
-/*
- * As a concession to the ARPANET we read a list of gateways
- * from /etc/gateways and add them to our tables. This file
- * exists at each ARPANET gateway and indicates a set of ``remote''
- * gateways (i.e. a gateway which we can't immediately determine
- * if it's present or not as we can do for those directly connected
- * at the hardware level). If a gateway is marked ``passive''
- * in the file, then we assume it doesn't have a routing process
- * of our design and simply assume it's always present. Those
- * not marked passive are treated as if they were directly
- * connected -- they're added into the interface list so we'll
- * send them routing updates.
- *
- * PASSIVE ENTRIES AREN'T NEEDED OR USED ON GATEWAYS RUNNING EGP.
- */
-gwkludge()
-{
- struct sockaddr_in dst, gate;
- FILE *fp;
- char *type, *dname, *gname, *qual, buf[BUFSIZ];
- struct interface *ifp;
- int metric, n;
- struct rt_entry route;
-
- fp = fopen(_PATH_GATEWAYS, "r");
- if (fp == NULL)
- return;
- qual = buf;
- dname = buf + 64;
- gname = buf + ((BUFSIZ - 64) / 3);
- type = buf + (((BUFSIZ - 64) * 2) / 3);
- bzero((char *)&dst, sizeof (dst));
- bzero((char *)&gate, sizeof (gate));
- bzero((char *)&route, sizeof(route));
-/* format: {net | host} XX gateway XX metric DD [passive | external]\n */
-#define readentry(fp) \
- fscanf((fp), "%s %s gateway %s metric %d %s\n", \
- type, dname, gname, &metric, qual)
- for (;;) {
- if ((n = readentry(fp)) == EOF)
- break;
- if (!getnetorhostname(type, dname, &dst))
- continue;
- if (!gethostnameornumber(gname, &gate))
- continue;
- if (metric == 0) /* XXX */
- metric = 1;
- if (strcmp(qual, "passive") == 0) {
- /*
- * Passive entries aren't placed in our tables,
- * only the kernel's, so we don't copy all of the
- * external routing information within a net.
- * Internal machines should use the default
- * route to a suitable gateway (like us).
- */
- route.rt_dst = *(struct sockaddr *) &dst;
- route.rt_router = *(struct sockaddr *) &gate;
- route.rt_flags = RTF_UP;
- if (strcmp(type, "host") == 0)
- route.rt_flags |= RTF_HOST;
- if (metric)
- route.rt_flags |= RTF_GATEWAY;
- (void) ioctl(s, SIOCADDRT, (char *)&route.rt_rt);
- continue;
- }
- if (strcmp(qual, "external") == 0) {
- /*
- * Entries marked external are handled
- * by other means, e.g. EGP,
- * and are placed in our tables only
- * to prevent overriding them
- * with something else.
- */
- rtadd(&dst, &gate, metric, RTS_EXTERNAL|RTS_PASSIVE);
- continue;
- }
- /* assume no duplicate entries */
- externalinterfaces++;
- ifp = (struct interface *)malloc(sizeof (*ifp));
- bzero((char *)ifp, sizeof (*ifp));
- ifp->int_flags = IFF_REMOTE;
- /* can't identify broadcast capability */
- ifp->int_net = inet_netof(dst.sin_addr);
- if (strcmp(type, "host") == 0) {
- ifp->int_flags |= IFF_POINTOPOINT;
- ifp->int_dstaddr = *((struct sockaddr *)&dst);
- }
- ifp->int_addr = *((struct sockaddr *)&gate);
- ifp->int_metric = metric;
- ifp->int_next = ifnet;
- ifnet = ifp;
- addrouteforif(ifp);
- }
- fclose(fp);
-}
-
-getnetorhostname(type, name, sin)
- char *type, *name;
- struct sockaddr_in *sin;
-{
-
- if (strcmp(type, "net") == 0) {
- struct netent *np = getnetbyname(name);
- int n;
-
- if (np == 0)
- n = inet_network(name);
- else {
- if (np->n_addrtype != AF_INET)
- return (0);
- n = np->n_net;
- /*
- * getnetbyname returns right-adjusted value.
- */
- if (n < 128)
- n <<= IN_CLASSA_NSHIFT;
- else if (n < 65536)
- n <<= IN_CLASSB_NSHIFT;
- else
- n <<= IN_CLASSC_NSHIFT;
- }
- sin->sin_family = AF_INET;
- sin->sin_addr = inet_makeaddr(n, INADDR_ANY);
- return (1);
- }
- if (strcmp(type, "host") == 0) {
- struct hostent *hp = gethostbyname(name);
-
- if (hp == 0)
- sin->sin_addr.s_addr = inet_addr(name);
- else {
- if (hp->h_addrtype != AF_INET)
- return (0);
- bcopy(hp->h_addr, &sin->sin_addr, hp->h_length);
- }
- sin->sin_family = AF_INET;
- return (1);
- }
- return (0);
-}
-
-gethostnameornumber(name, sin)
- char *name;
- struct sockaddr_in *sin;
-{
- struct hostent *hp;
-
- hp = gethostbyname(name);
- if (hp) {
- bcopy(hp->h_addr, &sin->sin_addr, hp->h_length);
- sin->sin_family = hp->h_addrtype;
- return (1);
- }
- sin->sin_addr.s_addr = inet_addr(name);
- sin->sin_family = AF_INET;
- return (sin->sin_addr.s_addr != -1);
-}
generated by cgit v1.2.3 (git 2.25.1) at 2025-08-05 06:05:59 +0000