/*- * SPDX-License-Identifier: BSD-2-Clause * * Copyright (c) 1996 - 2001 Brian Somers * based on work by Toshiharu OHNO * Internet Initiative Japan, Inc (IIJ) * 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. * * THIS SOFTWARE IS PROVIDED BY THE AUTHOR 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 AUTHOR 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. */ #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include "layer.h" #include "defs.h" #include "command.h" #include "mbuf.h" #include "log.h" #include "iplist.h" #include "timer.h" #include "throughput.h" #include "lqr.h" #include "hdlc.h" #include "fsm.h" #include "lcp.h" #include "ccp.h" #include "link.h" #include "slcompress.h" #include "ncpaddr.h" #include "ipcp.h" #include "filter.h" #include "descriptor.h" #include "mp.h" #ifndef NORADIUS #include "radius.h" #endif #include "ipv6cp.h" #include "ncp.h" #include "bundle.h" #include "route.h" #include "prompt.h" #include "iface.h" #include "id.h" static void p_sockaddr(struct prompt *prompt, struct sockaddr *phost, struct sockaddr *pmask, int width) { struct ncprange range; char buf[29]; struct sockaddr_dl *dl = (struct sockaddr_dl *)phost; if (log_IsKept(LogDEBUG)) { char tmp[50]; log_Printf(LogDEBUG, "Found the following sockaddr:\n"); log_Printf(LogDEBUG, " Family %d, len %d\n", (int)phost->sa_family, (int)phost->sa_len); inet_ntop(phost->sa_family, phost->sa_data, tmp, sizeof tmp); log_Printf(LogDEBUG, " Addr %s\n", tmp); if (pmask) { inet_ntop(pmask->sa_family, pmask->sa_data, tmp, sizeof tmp); log_Printf(LogDEBUG, " Mask %s\n", tmp); } } switch (phost->sa_family) { case AF_INET: #ifndef NOINET6 case AF_INET6: #endif ncprange_setsa(&range, phost, pmask); if (ncprange_isdefault(&range)) prompt_Printf(prompt, "%-*s ", width - 1, "default"); else prompt_Printf(prompt, "%-*s ", width - 1, ncprange_ntoa(&range)); return; case AF_LINK: if (dl->sdl_nlen) snprintf(buf, sizeof buf, "%.*s", dl->sdl_nlen, dl->sdl_data); else if (dl->sdl_alen) { if (dl->sdl_type == IFT_ETHER) { if (dl->sdl_alen < sizeof buf / 3) { int f; u_char *MAC; MAC = (u_char *)dl->sdl_data + dl->sdl_nlen; for (f = 0; f < dl->sdl_alen; f++) sprintf(buf+f*3, "%02x:", MAC[f]); buf[f*3-1] = '\0'; } else strcpy(buf, "??:??:??:??:??:??"); } else sprintf(buf, "", dl->sdl_type); } else if (dl->sdl_slen) sprintf(buf, "", dl->sdl_slen); else sprintf(buf, "link#%d", dl->sdl_index); break; default: sprintf(buf, "", phost->sa_family); break; } prompt_Printf(prompt, "%-*s ", width-1, buf); } static struct bits { u_int32_t b_mask; char b_val; } bits[] = { { RTF_UP, 'U' }, { RTF_GATEWAY, 'G' }, { RTF_HOST, 'H' }, { RTF_REJECT, 'R' }, { RTF_DYNAMIC, 'D' }, { RTF_MODIFIED, 'M' }, { RTF_DONE, 'd' }, { RTF_XRESOLVE, 'X' }, { RTF_STATIC, 'S' }, { RTF_PROTO1, '1' }, { RTF_PROTO2, '2' }, { RTF_BLACKHOLE, 'B' }, #ifdef RTF_LLINFO { RTF_LLINFO, 'L' }, #endif #ifdef RTF_CLONING { RTF_CLONING, 'C' }, #endif #ifdef RTF_PROTO3 { RTF_PROTO3, '3' }, #endif #ifdef RTF_BROADCAST { RTF_BROADCAST, 'b' }, #endif { 0, '\0' } }; static void p_flags(struct prompt *prompt, u_int32_t f, unsigned max) { char name[33], *flags; register struct bits *p = bits; if (max > sizeof name - 1) max = sizeof name - 1; for (flags = name; p->b_mask && flags - name < (int)max; p++) if (p->b_mask & f) *flags++ = p->b_val; *flags = '\0'; prompt_Printf(prompt, "%-*.*s", (int)max, (int)max, name); } static int route_nifs = -1; const char * Index2Nam(int idx) { /* * XXX: Maybe we should select() on the routing socket so that we can * notice interfaces that come & go (PCCARD support). * Or we could even support a signal that resets these so that * the PCCARD insert/remove events can signal ppp. */ static char **ifs; /* Figure these out once */ static int debug_done; /* Debug once */ if (idx > route_nifs || (idx > 0 && ifs[idx-1] == NULL)) { int mib[6], have, had; size_t needed; char *buf, *ptr, *end; struct sockaddr_dl *dl; struct if_msghdr *ifm; if (ifs) { free(ifs); ifs = NULL; route_nifs = 0; } debug_done = 0; mib[0] = CTL_NET; mib[1] = PF_ROUTE; mib[2] = 0; mib[3] = 0; mib[4] = NET_RT_IFLIST; mib[5] = 0; if (sysctl(mib, 6, NULL, &needed, NULL, 0) < 0) { log_Printf(LogERROR, "Index2Nam: sysctl: estimate: %s\n", strerror(errno)); return NumStr(idx, NULL, 0); } if ((buf = malloc(needed)) == NULL) return NumStr(idx, NULL, 0); if (sysctl(mib, 6, buf, &needed, NULL, 0) < 0) { free(buf); return NumStr(idx, NULL, 0); } end = buf + needed; have = 0; for (ptr = buf; ptr < end; ptr += ifm->ifm_msglen) { ifm = (struct if_msghdr *)ptr; if (ifm->ifm_type != RTM_IFINFO) continue; dl = (struct sockaddr_dl *)(ifm + 1); if (ifm->ifm_index > 0) { if (ifm->ifm_index > have) { char **newifs; had = have; have = ifm->ifm_index + 5; if (had) newifs = (char **)realloc(ifs, sizeof(char *) * have); else newifs = (char **)malloc(sizeof(char *) * have); if (!newifs) { log_Printf(LogDEBUG, "Index2Nam: %s\n", strerror(errno)); route_nifs = 0; if (ifs) { free(ifs); ifs = NULL; } free(buf); return NumStr(idx, NULL, 0); } ifs = newifs; memset(ifs + had, '\0', sizeof(char *) * (have - had)); } if (ifs[ifm->ifm_index-1] == NULL) { ifs[ifm->ifm_index-1] = (char *)malloc(dl->sdl_nlen+1); if (ifs[ifm->ifm_index-1] == NULL) log_Printf(LogDEBUG, "Skipping interface %d: Out of memory\n", ifm->ifm_index); else { memcpy(ifs[ifm->ifm_index-1], dl->sdl_data, dl->sdl_nlen); ifs[ifm->ifm_index-1][dl->sdl_nlen] = '\0'; if (route_nifs < ifm->ifm_index) route_nifs = ifm->ifm_index; } } } else if (log_IsKept(LogDEBUG)) log_Printf(LogDEBUG, "Skipping out-of-range interface %d!\n", ifm->ifm_index); } free(buf); } if (log_IsKept(LogDEBUG) && !debug_done) { int f; log_Printf(LogDEBUG, "Found the following interfaces:\n"); for (f = 0; f < route_nifs; f++) if (ifs[f] != NULL) log_Printf(LogDEBUG, " Index %d, name \"%s\"\n", f+1, ifs[f]); debug_done = 1; } if (idx < 1 || idx > route_nifs || ifs[idx-1] == NULL) return NumStr(idx, NULL, 0); return ifs[idx-1]; } void route_ParseHdr(struct rt_msghdr *rtm, struct sockaddr *sa[RTAX_MAX]) { char *wp; int rtax; wp = (char *)(rtm + 1); for (rtax = 0; rtax < RTAX_MAX; rtax++) if (rtm->rtm_addrs & (1 << rtax)) { sa[rtax] = (struct sockaddr *)wp; wp += ROUNDUP(sa[rtax]->sa_len); if (sa[rtax]->sa_family == 0) sa[rtax] = NULL; /* ??? */ } else sa[rtax] = NULL; } int route_Show(struct cmdargs const *arg) { struct rt_msghdr *rtm; struct sockaddr *sa[RTAX_MAX]; char *sp, *ep, *cp; size_t needed; int mib[6]; mib[0] = CTL_NET; mib[1] = PF_ROUTE; mib[2] = 0; mib[3] = 0; mib[4] = NET_RT_DUMP; mib[5] = 0; if (sysctl(mib, 6, NULL, &needed, NULL, 0) < 0) { log_Printf(LogERROR, "route_Show: sysctl: estimate: %s\n", strerror(errno)); return (1); } sp = malloc(needed); if (sp == NULL) return (1); if (sysctl(mib, 6, sp, &needed, NULL, 0) < 0) { log_Printf(LogERROR, "route_Show: sysctl: getroute: %s\n", strerror(errno)); free(sp); return (1); } ep = sp + needed; prompt_Printf(arg->prompt, "%-20s%-20sFlags Netif\n", "Destination", "Gateway"); for (cp = sp; cp < ep; cp += rtm->rtm_msglen) { rtm = (struct rt_msghdr *)cp; route_ParseHdr(rtm, sa); if (sa[RTAX_DST] && sa[RTAX_GATEWAY]) { p_sockaddr(arg->prompt, sa[RTAX_DST], sa[RTAX_NETMASK], 20); p_sockaddr(arg->prompt, sa[RTAX_GATEWAY], NULL, 20); p_flags(arg->prompt, rtm->rtm_flags, 6); prompt_Printf(arg->prompt, " %s\n", Index2Nam(rtm->rtm_index)); } else prompt_Printf(arg->prompt, "\n"); } free(sp); return 0; } /* * Delete routes associated with our interface */ void route_IfDelete(struct bundle *bundle, int all) { struct rt_msghdr *rtm; struct sockaddr *sa[RTAX_MAX]; struct ncprange range; int pass; size_t needed; char *sp, *cp, *ep; int mib[6]; log_Printf(LogDEBUG, "route_IfDelete (%d)\n", bundle->iface->index); mib[0] = CTL_NET; mib[1] = PF_ROUTE; mib[2] = 0; mib[3] = 0; mib[4] = NET_RT_DUMP; mib[5] = 0; if (sysctl(mib, 6, NULL, &needed, NULL, 0) < 0) { log_Printf(LogERROR, "route_IfDelete: sysctl: estimate: %s\n", strerror(errno)); return; } sp = malloc(needed); if (sp == NULL) return; if (sysctl(mib, 6, sp, &needed, NULL, 0) < 0) { log_Printf(LogERROR, "route_IfDelete: sysctl: getroute: %s\n", strerror(errno)); free(sp); return; } ep = sp + needed; for (pass = 0; pass < 2; pass++) { /* * We do 2 passes. The first deletes all cloned routes. The second * deletes all non-cloned routes. This is done to avoid * potential errors from trying to delete route X after route Y where * route X was cloned from route Y (and is no longer there 'cos it * may have gone with route Y). */ if (pass == 0) /* So we can't tell ! */ continue; for (cp = sp; cp < ep; cp += rtm->rtm_msglen) { rtm = (struct rt_msghdr *)cp; route_ParseHdr(rtm, sa); if (rtm->rtm_index == bundle->iface->index && sa[RTAX_DST] && sa[RTAX_GATEWAY] && (sa[RTAX_DST]->sa_family == AF_INET #ifndef NOINET6 || sa[RTAX_DST]->sa_family == AF_INET6 #endif ) && (all || (rtm->rtm_flags & RTF_GATEWAY))) { if (log_IsKept(LogDEBUG)) { char gwstr[NCP_ASCIIBUFFERSIZE]; struct ncpaddr gw; ncprange_setsa(&range, sa[RTAX_DST], sa[RTAX_NETMASK]); ncpaddr_setsa(&gw, sa[RTAX_GATEWAY]); snprintf(gwstr, sizeof gwstr, "%s", ncpaddr_ntoa(&gw)); log_Printf(LogDEBUG, "Found %s %s\n", ncprange_ntoa(&range), gwstr); } if (sa[RTAX_GATEWAY]->sa_family == AF_INET || #ifndef NOINET6 sa[RTAX_GATEWAY]->sa_family == AF_INET6 || #endif sa[RTAX_GATEWAY]->sa_family == AF_LINK) { if (pass == 1) { ncprange_setsa(&range, sa[RTAX_DST], sa[RTAX_NETMASK]); rt_Set(bundle, RTM_DELETE, &range, NULL, 0, 0); } else log_Printf(LogDEBUG, "route_IfDelete: Skip it (pass %d)\n", pass); } else log_Printf(LogDEBUG, "route_IfDelete: Can't remove routes for family %d\n", sa[RTAX_GATEWAY]->sa_family); } } } free(sp); } /* * Update the MTU on all routes for the given interface */ void route_UpdateMTU(struct bundle *bundle) { struct rt_msghdr *rtm; struct sockaddr *sa[RTAX_MAX]; struct ncprange dst; size_t needed; char *sp, *cp, *ep; int mib[6]; log_Printf(LogDEBUG, "route_UpdateMTU (%d)\n", bundle->iface->index); mib[0] = CTL_NET; mib[1] = PF_ROUTE; mib[2] = 0; mib[3] = 0; mib[4] = NET_RT_DUMP; mib[5] = 0; if (sysctl(mib, 6, NULL, &needed, NULL, 0) < 0) { log_Printf(LogERROR, "route_IfDelete: sysctl: estimate: %s\n", strerror(errno)); return; } sp = malloc(needed); if (sp == NULL) return; if (sysctl(mib, 6, sp, &needed, NULL, 0) < 0) { log_Printf(LogERROR, "route_IfDelete: sysctl: getroute: %s\n", strerror(errno)); free(sp); return; } ep = sp + needed; for (cp = sp; cp < ep; cp += rtm->rtm_msglen) { rtm = (struct rt_msghdr *)cp; route_ParseHdr(rtm, sa); if (sa[RTAX_DST] && (sa[RTAX_DST]->sa_family == AF_INET #ifndef NOINET6 || sa[RTAX_DST]->sa_family == AF_INET6 #endif ) && sa[RTAX_GATEWAY] && rtm->rtm_index == bundle->iface->index) { if (log_IsKept(LogTCPIP)) { ncprange_setsa(&dst, sa[RTAX_DST], sa[RTAX_NETMASK]); log_Printf(LogTCPIP, "route_UpdateMTU: Netif: %d (%s), dst %s," " mtu %lu\n", rtm->rtm_index, Index2Nam(rtm->rtm_index), ncprange_ntoa(&dst), bundle->iface->mtu); } rt_Update(bundle, sa[RTAX_DST], sa[RTAX_GATEWAY], sa[RTAX_NETMASK], sa[RTAX_IFP], sa[RTAX_IFA]); } } free(sp); } int GetIfIndex(char *name) { int idx; idx = 1; while (route_nifs == -1 || idx < route_nifs) if (strcmp(Index2Nam(idx), name) == 0) return idx; else idx++; return -1; } void route_Change(struct bundle *bundle, struct sticky_route *r, const struct ncpaddr *me, const struct ncpaddr *peer) { struct ncpaddr dst; for (; r; r = r->next) { ncprange_getaddr(&r->dst, &dst); if (ncpaddr_family(me) == AF_INET) { if ((r->type & ROUTE_DSTMYADDR) && !ncpaddr_equal(&dst, me)) { rt_Set(bundle, RTM_DELETE, &r->dst, NULL, 1, 0); ncprange_sethost(&r->dst, me); if (r->type & ROUTE_GWHISADDR) ncpaddr_copy(&r->gw, peer); } else if ((r->type & ROUTE_DSTHISADDR) && !ncpaddr_equal(&dst, peer)) { rt_Set(bundle, RTM_DELETE, &r->dst, NULL, 1, 0); ncprange_sethost(&r->dst, peer); if (r->type & ROUTE_GWHISADDR) ncpaddr_copy(&r->gw, peer); } else if ((r->type & ROUTE_DSTDNS0) && !ncpaddr_equal(&dst, peer)) { if (bundle->ncp.ipcp.ns.dns[0].s_addr == INADDR_NONE) continue; rt_Set(bundle, RTM_DELETE, &r->dst, NULL, 1, 0); if (r->type & ROUTE_GWHISADDR) ncpaddr_copy(&r->gw, peer); } else if ((r->type & ROUTE_DSTDNS1) && !ncpaddr_equal(&dst, peer)) { if (bundle->ncp.ipcp.ns.dns[1].s_addr == INADDR_NONE) continue; rt_Set(bundle, RTM_DELETE, &r->dst, NULL, 1, 0); if (r->type & ROUTE_GWHISADDR) ncpaddr_copy(&r->gw, peer); } else if ((r->type & ROUTE_GWHISADDR) && !ncpaddr_equal(&r->gw, peer)) ncpaddr_copy(&r->gw, peer); #ifndef NOINET6 } else if (ncpaddr_family(me) == AF_INET6) { if ((r->type & ROUTE_DSTMYADDR6) && !ncpaddr_equal(&dst, me)) { rt_Set(bundle, RTM_DELETE, &r->dst, NULL, 1, 0); ncprange_sethost(&r->dst, me); if (r->type & ROUTE_GWHISADDR) ncpaddr_copy(&r->gw, peer); } else if ((r->type & ROUTE_DSTHISADDR6) && !ncpaddr_equal(&dst, peer)) { rt_Set(bundle, RTM_DELETE, &r->dst, NULL, 1, 0); ncprange_sethost(&r->dst, peer); if (r->type & ROUTE_GWHISADDR) ncpaddr_copy(&r->gw, peer); } else if ((r->type & ROUTE_GWHISADDR6) && !ncpaddr_equal(&r->gw, peer)) ncpaddr_copy(&r->gw, peer); #endif } rt_Set(bundle, RTM_ADD, &r->dst, &r->gw, 1, 0); } } void route_Add(struct sticky_route **rp, int type, const struct ncprange *dst, const struct ncpaddr *gw) { struct sticky_route *r; int dsttype = type & ROUTE_DSTANY; r = NULL; while (*rp) { if ((dsttype && dsttype == ((*rp)->type & ROUTE_DSTANY)) || (!dsttype && ncprange_equal(&(*rp)->dst, dst))) { /* Oops, we already have this route - unlink it */ free(r); /* impossible really */ r = *rp; *rp = r->next; } else rp = &(*rp)->next; } if (r == NULL) { r = (struct sticky_route *)malloc(sizeof(struct sticky_route)); if (r == NULL) { log_Printf(LogERROR, "route_Add: Out of memory!\n"); return; } } r->type = type; r->next = NULL; ncprange_copy(&r->dst, dst); ncpaddr_copy(&r->gw, gw); *rp = r; } void route_Delete(struct sticky_route **rp, int type, const struct ncprange *dst) { struct sticky_route *r; int dsttype = type & ROUTE_DSTANY; for (; *rp; rp = &(*rp)->next) { if ((dsttype && dsttype == ((*rp)->type & ROUTE_DSTANY)) || (!dsttype && ncprange_equal(dst, &(*rp)->dst))) { r = *rp; *rp = r->next; free(r); break; } } } void route_DeleteAll(struct sticky_route **rp) { struct sticky_route *r, *rn; for (r = *rp; r; r = rn) { rn = r->next; free(r); } *rp = NULL; } void route_ShowSticky(struct prompt *p, struct sticky_route *r, const char *tag, int indent) { int tlen = strlen(tag); if (tlen + 2 > indent) prompt_Printf(p, "%s:\n%*s", tag, indent, ""); else prompt_Printf(p, "%s:%*s", tag, indent - tlen - 1, ""); for (; r; r = r->next) { prompt_Printf(p, "%*sadd ", tlen ? 0 : indent, ""); tlen = 0; if (r->type & ROUTE_DSTMYADDR) prompt_Printf(p, "MYADDR"); else if (r->type & ROUTE_DSTMYADDR6) prompt_Printf(p, "MYADDR6"); else if (r->type & ROUTE_DSTHISADDR) prompt_Printf(p, "HISADDR"); else if (r->type & ROUTE_DSTHISADDR6) prompt_Printf(p, "HISADDR6"); else if (r->type & ROUTE_DSTDNS0) prompt_Printf(p, "DNS0"); else if (r->type & ROUTE_DSTDNS1) prompt_Printf(p, "DNS1"); else if (ncprange_isdefault(&r->dst)) prompt_Printf(p, "default"); else prompt_Printf(p, "%s", ncprange_ntoa(&r->dst)); if (r->type & ROUTE_GWHISADDR) prompt_Printf(p, " HISADDR\n"); else if (r->type & ROUTE_GWHISADDR6) prompt_Printf(p, " HISADDR6\n"); else prompt_Printf(p, " %s\n", ncpaddr_ntoa(&r->gw)); } } struct rtmsg { struct rt_msghdr m_rtm; char m_space[256]; }; static size_t memcpy_roundup(char *cp, const void *data, size_t len) { size_t padlen; padlen = ROUNDUP(len); memcpy(cp, data, len); if (padlen > len) memset(cp + len, '\0', padlen - len); return padlen; } #if defined(__KAME__) && !defined(NOINET6) static void add_scope(struct sockaddr *sa, int ifindex) { struct sockaddr_in6 *sa6; if (sa->sa_family != AF_INET6) return; sa6 = (struct sockaddr_in6 *)sa; if (!IN6_IS_ADDR_LINKLOCAL(&sa6->sin6_addr) && !IN6_IS_ADDR_MC_LINKLOCAL(&sa6->sin6_addr)) return; if (*(u_int16_t *)&sa6->sin6_addr.s6_addr[2] != 0) return; *(u_int16_t *)&sa6->sin6_addr.s6_addr[2] = htons(ifindex); } #endif int rt_Set(struct bundle *bundle, int cmd, const struct ncprange *dst, const struct ncpaddr *gw, int bang, int quiet) { struct rtmsg rtmes; int s, nb, wb; char *cp; const char *cmdstr; struct sockaddr_storage sadst, samask, sagw; int result = 1; if (bang) cmdstr = (cmd == RTM_ADD ? "Add!" : "Delete!"); else cmdstr = (cmd == RTM_ADD ? "Add" : "Delete"); s = ID0socket(PF_ROUTE, SOCK_RAW, 0); if (s < 0) { log_Printf(LogERROR, "rt_Set: socket(): %s\n", strerror(errno)); return result; } memset(&rtmes, '\0', sizeof rtmes); rtmes.m_rtm.rtm_version = RTM_VERSION; rtmes.m_rtm.rtm_type = cmd; rtmes.m_rtm.rtm_addrs = RTA_DST; rtmes.m_rtm.rtm_seq = ++bundle->routing_seq; rtmes.m_rtm.rtm_pid = getpid(); rtmes.m_rtm.rtm_flags = RTF_UP | RTF_GATEWAY | RTF_STATIC; if (cmd == RTM_ADD) { if (bundle->ncp.cfg.sendpipe > 0) { rtmes.m_rtm.rtm_rmx.rmx_sendpipe = bundle->ncp.cfg.sendpipe; rtmes.m_rtm.rtm_inits |= RTV_SPIPE; } if (bundle->ncp.cfg.recvpipe > 0) { rtmes.m_rtm.rtm_rmx.rmx_recvpipe = bundle->ncp.cfg.recvpipe; rtmes.m_rtm.rtm_inits |= RTV_RPIPE; } } ncprange_getsa(dst, &sadst, &samask); #if defined(__KAME__) && !defined(NOINET6) add_scope((struct sockaddr *)&sadst, bundle->iface->index); #endif cp = rtmes.m_space; cp += memcpy_roundup(cp, &sadst, sadst.ss_len); if (cmd == RTM_ADD) { if (gw == NULL) { log_Printf(LogERROR, "rt_Set: Program error\n"); close(s); return result; } ncpaddr_getsa(gw, &sagw); #if defined(__KAME__) && !defined(NOINET6) add_scope((struct sockaddr *)&sagw, bundle->iface->index); #endif if (ncpaddr_isdefault(gw)) { if (!quiet) log_Printf(LogERROR, "rt_Set: Cannot add a route with" " gateway 0.0.0.0\n"); close(s); return result; } else { cp += memcpy_roundup(cp, &sagw, sagw.ss_len); rtmes.m_rtm.rtm_addrs |= RTA_GATEWAY; } } if (!ncprange_ishost(dst)) { cp += memcpy_roundup(cp, &samask, samask.ss_len); rtmes.m_rtm.rtm_addrs |= RTA_NETMASK; } else rtmes.m_rtm.rtm_flags |= RTF_HOST; nb = cp - (char *)&rtmes; rtmes.m_rtm.rtm_msglen = nb; wb = ID0write(s, &rtmes, nb); if (wb < 0) { log_Printf(LogTCPIP, "rt_Set failure:\n"); log_Printf(LogTCPIP, "rt_Set: Cmd = %s\n", cmdstr); log_Printf(LogTCPIP, "rt_Set: Dst = %s\n", ncprange_ntoa(dst)); if (gw != NULL) log_Printf(LogTCPIP, "rt_Set: Gateway = %s\n", ncpaddr_ntoa(gw)); failed: if (cmd == RTM_ADD && (rtmes.m_rtm.rtm_errno == EEXIST || (rtmes.m_rtm.rtm_errno == 0 && errno == EEXIST))) { if (!bang) { log_Printf(LogWARN, "Add route failed: %s already exists\n", ncprange_ntoa(dst)); result = 0; /* Don't add to our dynamic list */ } else { rtmes.m_rtm.rtm_type = cmd = RTM_CHANGE; if ((wb = ID0write(s, &rtmes, nb)) < 0) goto failed; } } else if (cmd == RTM_DELETE && (rtmes.m_rtm.rtm_errno == ESRCH || (rtmes.m_rtm.rtm_errno == 0 && errno == ESRCH))) { if (!bang) log_Printf(LogWARN, "Del route failed: %s: Non-existent\n", ncprange_ntoa(dst)); } else if (rtmes.m_rtm.rtm_errno == 0) { if (!quiet || errno != ENETUNREACH) log_Printf(LogWARN, "%s route failed: %s: errno: %s\n", cmdstr, ncprange_ntoa(dst), strerror(errno)); } else log_Printf(LogWARN, "%s route failed: %s: %s\n", cmdstr, ncprange_ntoa(dst), strerror(rtmes.m_rtm.rtm_errno)); } if (log_IsKept(LogDEBUG)) { char gwstr[NCP_ASCIIBUFFERSIZE]; if (gw) snprintf(gwstr, sizeof gwstr, "%s", ncpaddr_ntoa(gw)); else snprintf(gwstr, sizeof gwstr, ""); log_Printf(LogDEBUG, "wrote %d: cmd = %s, dst = %s, gateway = %s\n", wb, cmdstr, ncprange_ntoa(dst), gwstr); } close(s); return result; } void rt_Update(struct bundle *bundle, const struct sockaddr *dst, const struct sockaddr *gw, const struct sockaddr *mask, const struct sockaddr *ifp, const struct sockaddr *ifa) { struct ncprange ncpdst; struct rtmsg rtmes; char *p; int s, wb; s = ID0socket(PF_ROUTE, SOCK_RAW, 0); if (s < 0) { log_Printf(LogERROR, "rt_Update: socket(): %s\n", strerror(errno)); return; } memset(&rtmes, '\0', sizeof rtmes); rtmes.m_rtm.rtm_version = RTM_VERSION; rtmes.m_rtm.rtm_type = RTM_CHANGE; rtmes.m_rtm.rtm_addrs = 0; rtmes.m_rtm.rtm_seq = ++bundle->routing_seq; rtmes.m_rtm.rtm_pid = getpid(); rtmes.m_rtm.rtm_flags = RTF_UP | RTF_STATIC; if (bundle->ncp.cfg.sendpipe > 0) { rtmes.m_rtm.rtm_rmx.rmx_sendpipe = bundle->ncp.cfg.sendpipe; rtmes.m_rtm.rtm_inits |= RTV_SPIPE; } if (bundle->ncp.cfg.recvpipe > 0) { rtmes.m_rtm.rtm_rmx.rmx_recvpipe = bundle->ncp.cfg.recvpipe; rtmes.m_rtm.rtm_inits |= RTV_RPIPE; } rtmes.m_rtm.rtm_rmx.rmx_mtu = bundle->iface->mtu; rtmes.m_rtm.rtm_inits |= RTV_MTU; p = rtmes.m_space; if (dst) { rtmes.m_rtm.rtm_addrs |= RTA_DST; p += memcpy_roundup(p, dst, dst->sa_len); } if (gw) { rtmes.m_rtm.rtm_addrs |= RTA_GATEWAY; p += memcpy_roundup(p, gw, gw->sa_len); } if (mask) { rtmes.m_rtm.rtm_addrs |= RTA_NETMASK; p += memcpy_roundup(p, mask, mask->sa_len); } else rtmes.m_rtm.rtm_flags |= RTF_HOST; if (ifa && ifp && ifp->sa_family == AF_LINK) { rtmes.m_rtm.rtm_addrs |= RTA_IFP; p += memcpy_roundup(p, ifp, ifp->sa_len); rtmes.m_rtm.rtm_addrs |= RTA_IFA; p += memcpy_roundup(p, ifa, ifa->sa_len); } rtmes.m_rtm.rtm_msglen = p - (char *)&rtmes; wb = ID0write(s, &rtmes, rtmes.m_rtm.rtm_msglen); if (wb < 0) { ncprange_setsa(&ncpdst, dst, mask); log_Printf(LogTCPIP, "rt_Update failure:\n"); log_Printf(LogTCPIP, "rt_Update: Dst = %s\n", ncprange_ntoa(&ncpdst)); if (rtmes.m_rtm.rtm_errno == 0) log_Printf(LogWARN, "%s: Change route failed: errno: %s\n", ncprange_ntoa(&ncpdst), strerror(errno)); else log_Printf(LogWARN, "%s: Change route failed: %s\n", ncprange_ntoa(&ncpdst), strerror(rtmes.m_rtm.rtm_errno)); } close(s); }