diff options
Diffstat (limited to 'usr.sbin/IPXrouted/tables.c')
| -rw-r--r-- | usr.sbin/IPXrouted/tables.c | 419 |
1 files changed, 0 insertions, 419 deletions
diff --git a/usr.sbin/IPXrouted/tables.c b/usr.sbin/IPXrouted/tables.c deleted file mode 100644 index aebc792..0000000 --- a/usr.sbin/IPXrouted/tables.c +++ /dev/null @@ -1,419 +0,0 @@ -/* - * Copyright (c) 1985, 1993 - * The Regents of the University of California. All rights reserved. - * - * Copyright (c) 1995 John Hay. 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. - * - * $FreeBSD$ - */ - -#ifndef lint -static const char sccsid[] = "@(#)tables.c 8.1 (Berkeley) 6/5/93"; -#endif /* not lint */ - -/* - * Routing Table Management Daemon - */ -#include "defs.h" -#include <sys/ioctl.h> -#include <errno.h> -#include <search.h> -#include <stdlib.h> -#include <unistd.h> - -#ifndef DEBUG -#define DEBUG 0 -#endif - -#define FIXLEN(s) { if ((s)->sa_len == 0) (s)->sa_len = sizeof (*(s));} - -int install = !DEBUG; /* if 1 call kernel */ -int delete = 1; - -struct rthash nethash[ROUTEHASHSIZ]; - -/* - * Lookup dst in the tables for an exact match. - */ -struct rt_entry * -rtlookup(struct sockaddr *dst) -{ - register struct rt_entry *rt; - register struct rthash *rh; - register u_int hash; - struct afhash h; - - if (dst->sa_family >= AF_MAX) - return (0); - (*afswitch[dst->sa_family].af_hash)(dst, &h); - hash = h.afh_nethash; - rh = &nethash[hash & ROUTEHASHMASK]; - for (rt = rh->rt_forw; rt != (struct rt_entry *)rh; rt = rt->rt_forw) { - if (rt->rt_hash != hash) - continue; - if (equal(&rt->rt_dst, dst)) - return (rt); - } - return (0); -} - -/* - * Find a route to dst as the kernel would. - */ -struct rt_entry * -rtfind(struct sockaddr *dst) -{ - register struct rt_entry *rt; - register struct rthash *rh; - register u_int hash; - struct afhash h; - int af = dst->sa_family; - int (*match)() = 0; - - if (af >= AF_MAX) - return (0); - (*afswitch[af].af_hash)(dst, &h); - - hash = h.afh_nethash; - rh = &nethash[hash & ROUTEHASHMASK]; - match = afswitch[af].af_netmatch; - for (rt = rh->rt_forw; rt != (struct rt_entry *)rh; rt = rt->rt_forw) { - if (rt->rt_hash != hash) - continue; - if (rt->rt_dst.sa_family == af && - (*match)(&rt->rt_dst, dst)) - return (rt); - } - return (0); -} - -void -rtadd(struct sockaddr *dst, struct sockaddr *gate, short metric, - short ticks, int state) -{ - struct afhash h; - register struct rt_entry *rt; - struct rthash *rh; - int af = dst->sa_family, flags; - u_int hash; - - FIXLEN(dst); - FIXLEN(gate); - if (af >= AF_MAX) - return; - (*afswitch[af].af_hash)(dst, &h); - flags = (*afswitch[af].af_ishost)(dst) ? RTF_HOST : 0; - hash = h.afh_nethash; - rh = &nethash[hash & ROUTEHASHMASK]; - rt = (struct rt_entry *)malloc(sizeof (*rt)); - if (rt == 0) - return; - rt->rt_hash = hash; - rt->rt_dst = *dst; - rt->rt_router = *gate; - rt->rt_metric = metric; - rt->rt_ticks = ticks; - rt->rt_timer = 0; - rt->rt_flags = RTF_UP | flags; - rt->rt_state = state | RTS_CHANGED; - rt->rt_ifp = if_ifwithnet(&rt->rt_router); - rt->rt_clone = NULL; - if (metric) - rt->rt_flags |= RTF_GATEWAY; - insque(rt, rh); - TRACE_ACTION("ADD", rt); - /* - * If the ioctl fails because the gateway is unreachable - * from this host, discard the entry. This should only - * occur because of an incorrect entry in /etc/gateways. - */ - if (install && rtioctl(ADD, &rt->rt_rt) < 0) { - if (errno != EEXIST) - perror("SIOCADDRT"); - if (errno == ENETUNREACH) { - TRACE_ACTION("DELETE", rt); - remque(rt); - free((char *)rt); - } - } -} - -void -rtadd_clone(struct rt_entry *ort, struct sockaddr *dst, - struct sockaddr *gate, short metric, short ticks, int state) -{ - struct afhash h; - register struct rt_entry *rt; - int af = dst->sa_family, flags; - u_int hash; - - FIXLEN(dst); - FIXLEN(gate); - if (af >= AF_MAX) - return; - (*afswitch[af].af_hash)(dst, &h); - flags = (*afswitch[af].af_ishost)(dst) ? RTF_HOST : 0; - hash = h.afh_nethash; - rt = (struct rt_entry *)malloc(sizeof (*rt)); - if (rt == 0) - return; - rt->rt_hash = hash; - rt->rt_dst = *dst; - rt->rt_router = *gate; - rt->rt_metric = metric; - rt->rt_ticks = ticks; - rt->rt_timer = 0; - rt->rt_flags = RTF_UP | flags; - rt->rt_state = state | RTS_CHANGED; - rt->rt_ifp = if_ifwithnet(&rt->rt_router); - rt->rt_clone = NULL; - rt->rt_forw = NULL; - rt->rt_back = NULL; - if (metric) - rt->rt_flags |= RTF_GATEWAY; - - while(ort->rt_clone != NULL) - ort = ort->rt_clone; - ort->rt_clone = rt; - TRACE_ACTION("ADD_CLONE", rt); -} - -void -rtchange(struct rt_entry *rt, struct sockaddr *gate, short metric, - short ticks) -{ - int doioctl = 0, metricchanged = 0; - - FIXLEN(gate); - /* - * Handling of clones. - * When the route changed and it had clones, handle it special. - * 1. If the new route is cheaper than the clone(s), free the clones. - * 2. If the new route is the same cost, it may be one of the clones, - * search for it and free it. - * 3. If the new route is more expensive than the clone(s), use the - * values of the clone(s). - */ - if (rt->rt_clone) { - if ((ticks < rt->rt_clone->rt_ticks) || - ((ticks == rt->rt_clone->rt_ticks) && - (metric < rt->rt_clone->rt_metric))) { - /* - * Free all clones. - */ - struct rt_entry *trt, *nrt; - - trt = rt->rt_clone; - rt->rt_clone = NULL; - while(trt) { - nrt = trt->rt_clone; - free((char *)trt); - trt = nrt; - } - } else if ((ticks == rt->rt_clone->rt_ticks) && - (metric == rt->rt_clone->rt_metric)) { - struct rt_entry *prt, *trt; - - prt = rt; - trt = rt->rt_clone; - - while(trt) { - if (equal(&trt->rt_router, gate)) { - prt->rt_clone = trt->rt_clone; - free(trt); - trt = prt->rt_clone; - } else { - prt = trt; - trt = trt->rt_clone; - } - } - } else { - /* - * Use the values of the first clone. - * Delete the corresponding clone. - */ - struct rt_entry *trt; - - trt = rt->rt_clone; - rt->rt_clone = rt->rt_clone->rt_clone; - metric = trt->rt_metric; - ticks = trt->rt_ticks; - *gate = trt->rt_router; - free((char *)trt); - } - } - - if (!equal(&rt->rt_router, gate)) - doioctl++; - if ((metric != rt->rt_metric) || (ticks != rt->rt_ticks)) - metricchanged++; - if (doioctl || metricchanged) { - TRACE_ACTION("CHANGE FROM", rt); - if (doioctl) { - rt->rt_router = *gate; - } - rt->rt_metric = metric; - rt->rt_ticks = ticks; - if ((rt->rt_state & RTS_INTERFACE) && metric) { - rt->rt_state &= ~RTS_INTERFACE; - if(rt->rt_ifp) - syslog(LOG_ERR, - "changing route from interface %s (timed out)", - rt->rt_ifp->int_name); - else - syslog(LOG_ERR, - "changing route from interface ??? (timed out)"); - } - if (metric) - rt->rt_flags |= RTF_GATEWAY; - else - rt->rt_flags &= ~RTF_GATEWAY; - rt->rt_ifp = if_ifwithnet(&rt->rt_router); - rt->rt_state |= RTS_CHANGED; - TRACE_ACTION("CHANGE TO", rt); - } - if (doioctl && install) { -#ifndef RTM_ADD - if (rtioctl(ADD, &rt->rt_rt) < 0) - syslog(LOG_ERR, "rtioctl ADD dst %s, gw %s: %m", - ipx_ntoa(&((struct sockaddr_ipx *)&rt->rt_dst)->sipx_addr), - ipx_ntoa(&((struct sockaddr_ipx *)&rt->rt_router)->sipx_addr)); - if (delete && rtioctl(DELETE, &oldroute) < 0) - perror("rtioctl DELETE"); -#else - if (delete == 0) { - if (rtioctl(ADD, &rt->rt_rt) >= 0) - return; - } else { - if (rtioctl(CHANGE, &rt->rt_rt) >= 0) - return; - } - syslog(LOG_ERR, "rtioctl ADD dst %s, gw %s: %m", - ipxdp_ntoa(&((struct sockaddr_ipx *)&rt->rt_dst)->sipx_addr), - ipxdp_ntoa(&((struct sockaddr_ipx *)&rt->rt_router)->sipx_addr)); -#endif - } -} - -void -rtdelete(struct rt_entry *rt) -{ - - struct sockaddr *sa = &(rt->rt_router); - FIXLEN(sa); - sa = &(rt->rt_dst); - FIXLEN(sa); - if (rt->rt_clone) { - /* - * If there is a clone we just do a rt_change to it. - */ - struct rt_entry *trt = rt->rt_clone; - rtchange(rt, &trt->rt_router, trt->rt_metric, trt->rt_ticks); - return; - } - if (rt->rt_state & RTS_INTERFACE) { - if (rt->rt_ifp) - syslog(LOG_ERR, - "deleting route to interface %s (timed out)", - rt->rt_ifp->int_name); - else - syslog(LOG_ERR, - "deleting route to interface ??? (timed out)"); - } - TRACE_ACTION("DELETE", rt); - if (install && rtioctl(DELETE, &rt->rt_rt) < 0) - perror("rtioctl DELETE"); - remque(rt); - free((char *)rt); -} - -void -rtinit(void) -{ - register struct rthash *rh; - - for (rh = nethash; rh < &nethash[ROUTEHASHSIZ]; rh++) - rh->rt_forw = rh->rt_back = (struct rt_entry *)rh; -} -int seqno; - -int -rtioctl(int action, struct rtuentry *ort) -{ -#ifndef RTM_ADD - if (install == 0) - return (errno = 0); - - ort->rtu_rtflags = ort->rtu_flags; - - switch (action) { - - case ADD: - return (ioctl(s, SIOCADDRT, (char *)ort)); - - case DELETE: - return (ioctl(s, SIOCDELRT, (char *)ort)); - - default: - return (-1); - } -#else /* RTM_ADD */ - struct { - struct rt_msghdr w_rtm; - struct sockaddr w_dst; - struct sockaddr w_gate; - struct sockaddr_ipx w_netmask; - } w; -#define rtm w.w_rtm - - bzero((char *)&w, sizeof(w)); - rtm.rtm_msglen = sizeof(w); - rtm.rtm_version = RTM_VERSION; - rtm.rtm_type = (action == ADD ? RTM_ADD : - (action == DELETE ? RTM_DELETE : RTM_CHANGE)); - rtm.rtm_flags = ort->rtu_flags; - rtm.rtm_seq = ++seqno; - rtm.rtm_addrs = RTA_DST|RTA_GATEWAY; - bcopy((char *)&ort->rtu_dst, (char *)&w.w_dst, sizeof(w.w_dst)); - bcopy((char *)&ort->rtu_router, (char *)&w.w_gate, sizeof(w.w_gate)); - w.w_gate.sa_family = w.w_dst.sa_family = AF_IPX; - w.w_gate.sa_len = w.w_dst.sa_len = sizeof(w.w_dst); - if (rtm.rtm_flags & RTF_HOST) { - rtm.rtm_msglen -= sizeof(w.w_netmask); - } else { - rtm.rtm_addrs |= RTA_NETMASK; - w.w_netmask = ipx_netmask; - rtm.rtm_msglen -= sizeof(w.w_netmask) - ipx_netmask.sipx_len; - } - errno = 0; - return write(r, (char *)&w, rtm.rtm_msglen); -#endif /* RTM_ADD */ -} |
