/* * PPP Routing related Module * * Written by Toshiharu OHNO (tony-o@iij.ad.jp) * * Copyright (C) 1994, Internet Initiative Japan, Inc. All rights reserverd. * * Redistribution and use in source and binary forms are permitted * provided that the above copyright notice and this paragraph are * duplicated in all such forms and that any documentation, * advertising materials, and other materials related to such * distribution and use acknowledge that the software was developed * by the Internet Initiative Japan, Inc. The name of the * IIJ may not be used to endorse or promote products derived * from this software without specific prior written permission. * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED * WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE. * * $FreeBSD$ * */ #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 "ipcp.h" #include "filter.h" #include "descriptor.h" #include "mp.h" #ifndef NORADIUS #include "radius.h" #endif #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) { char buf[29]; struct sockaddr_in *ihost4 = (struct sockaddr_in *)phost; struct sockaddr_in *mask4 = (struct sockaddr_in *)pmask; 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: if (!phost) buf[0] = '\0'; else if (ihost4->sin_addr.s_addr == INADDR_ANY) strcpy(buf, "default"); else if (!pmask) strcpy(buf, inet_ntoa(ihost4->sin_addr)); else { u_int32_t msk = ntohl(mask4->sin_addr.s_addr); u_int32_t tst; int bits; int len; struct sockaddr_in net; for (tst = 1, bits = 32; tst; tst <<= 1, bits--) if (msk & tst) break; for (tst <<= 1; tst; tst <<= 1) if (!(msk & tst)) break; net.sin_addr.s_addr = ihost4->sin_addr.s_addr & mask4->sin_addr.s_addr; strcpy(buf, inet_ntoa(net.sin_addr)); for (len = strlen(buf); len > 3; buf[len -= 2] = '\0') if (strcmp(buf + len - 2, ".0")) break; if (tst) /* non-contiguous :-( */ sprintf(buf + strlen(buf),"&0x%08lx", (u_long)msk); else sprintf(buf + strlen(buf), "/%d", bits); } break; 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; #ifndef NOINET6 case AF_INET6: if (!phost) buf[0] = '\0'; else { const u_char masks[] = { 0x00, 0x80, 0xc0, 0xe0, 0xf0, 0xf8, 0xfc, 0xfe }; struct sockaddr_in6 *ihost6 = (struct sockaddr_in6 *)phost; struct sockaddr_in6 *mask6 = (struct sockaddr_in6 *)pmask; int masklen, len; const u_char *c; /* XXX: ?????!?!?!!!!! This is horrible ! */ if (IN6_IS_ADDR_LINKLOCAL(&ihost6->sin6_addr) || IN6_IS_ADDR_MC_LINKLOCAL(&ihost6->sin6_addr)) { ihost6->sin6_scope_id = ntohs(*(u_short *)&ihost6->sin6_addr.s6_addr[2]); *(u_short *)&ihost6->sin6_addr.s6_addr[2] = 0; } if (mask6) { const u_char *p, *end; p = (const u_char *)&mask6->sin6_addr; end = p + 16; for (masklen = 0, end = p + 16; p < end && *p == 0xff; p++) masklen += 8; if (p < end) { for (c = masks; c < masks + sizeof masks; c++) if (*c == *p) { masklen += c - masks; break; } } } else masklen = 128; if (masklen == 0 && IN6_IS_ADDR_UNSPECIFIED(&ihost6->sin6_addr)) snprintf(buf, sizeof buf, "default"); else { getnameinfo(phost, ihost6->sin6_len, buf, sizeof buf, NULL, 0, NI_WITHSCOPEID | NI_NUMERICHOST); if (mask6 && (len = strlen(buf)) < sizeof buf - 1) snprintf(buf + len, sizeof buf - len, "/%d", masklen); } } break; #endif 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_CLONING, 'C' }, { RTF_XRESOLVE, 'X' }, { RTF_LLINFO, 'L' }, { RTF_STATIC, 'S' }, { RTF_PROTO1, '1' }, { RTF_PROTO2, '2' }, { RTF_BLACKHOLE, 'B' }, #ifdef RTF_WASCLONED { RTF_WASCLONED, 'W' }, #endif #ifdef RTF_PRCLONING { RTF_PRCLONING, 'c' }, #endif #ifdef RTF_PROTO3 { RTF_PROTO3, '3' }, #endif #ifdef RTF_BROADCAST { RTF_BROADCAST, 'b' }, #endif { 0, '\0' } }; #ifndef RTF_WASCLONED #define RTF_WASCLONED (0) #endif static void p_flags(struct prompt *prompt, u_int32_t f, int 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 < max; p++) if (p->b_mask & f) *flags++ = p->b_val; *flags = '\0'; prompt_Printf(prompt, "%-*.*s", max, max, name); } 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 nifs, debug_done; /* Figure out how many once, and debug once */ if (idx > 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; 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)); 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); memcpy(ifs[ifm->ifm_index-1], dl->sdl_data, dl->sdl_nlen); ifs[ifm->ifm_index-1][dl->sdl_nlen] = '\0'; if (nifs < ifm->ifm_index) 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 < 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 > 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); } 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 sockaddr_in **in; struct in_addr sa_none; int pass; size_t needed; char *sp, *cp, *ep; int mib[6]; log_Printf(LogDEBUG, "route_IfDelete (%d)\n", bundle->iface->index); sa_none.s_addr = INADDR_ANY; in = (struct sockaddr_in **)sa; 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 (RTF_WASCLONED == 0 && 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 (sa[RTAX_DST] && sa[RTAX_DST]->sa_family == AF_INET) { log_Printf(LogDEBUG, "route_IfDelete: addrs: %x, Netif: %d (%s)," " flags: %x, dst: %s ?\n", rtm->rtm_addrs, rtm->rtm_index, Index2Nam(rtm->rtm_index), rtm->rtm_flags, inet_ntoa(((struct sockaddr_in *)sa[RTAX_DST])->sin_addr)); if (sa[RTAX_GATEWAY] && rtm->rtm_index == bundle->iface->index && (all || (rtm->rtm_flags & RTF_GATEWAY))) { if (sa[RTAX_GATEWAY]->sa_family == AF_INET || sa[RTAX_GATEWAY]->sa_family == AF_LINK) { if ((pass == 0 && (rtm->rtm_flags & RTF_WASCLONED)) || (pass == 1 && !(rtm->rtm_flags & RTF_WASCLONED))) { log_Printf(LogDEBUG, "route_IfDelete: Remove it (pass %d)\n", pass); rt_Set(bundle, RTM_DELETE, in[RTAX_DST]->sin_addr, sa_none, sa_none, 0, 0); } else log_Printf(LogDEBUG, "route_IfDelete: Skip it (pass %d)\n", pass); } else log_Printf(LogDEBUG, "route_IfDelete: Can't remove routes of %d family !\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 sockaddr_in **in; size_t needed; char *sp, *cp, *ep; int mib[6]; log_Printf(LogDEBUG, "route_UpdateMTU (%d)\n", bundle->iface->index); in = (struct sockaddr_in **)sa; 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 && sa[RTAX_GATEWAY] && /* sa[RTAX_NETMASK] && */ rtm->rtm_index == bundle->iface->index && (sa[RTAX_GATEWAY]->sa_family == AF_INET || sa[RTAX_GATEWAY]->sa_family == AF_LINK)) { log_Printf(LogTCPIP, "route_UpdateMTU: Netif: %d (%s), dst %s, mtu %d\n", rtm->rtm_index, Index2Nam(rtm->rtm_index), inet_ntoa(((struct sockaddr_in *)sa[RTAX_DST])->sin_addr), bundle->mtu); rt_Update(bundle, in[RTAX_DST]->sin_addr, in[RTAX_GATEWAY]->sin_addr); } } free(sp); } int GetIfIndex(char *name) { int idx; const char *got; idx = 1; while (strcmp(got = Index2Nam(idx), "???")) if (!strcmp(got, name)) return idx; else idx++; return -1; } void route_Change(struct bundle *bundle, struct sticky_route *r, struct in_addr me, struct in_addr peer, struct in_addr dns[2]) { struct in_addr none, del; none.s_addr = INADDR_ANY; for (; r; r = r->next) { if ((r->type & ROUTE_DSTMYADDR) && r->dst.s_addr != me.s_addr) { del.s_addr = r->dst.s_addr & r->mask.s_addr; rt_Set(bundle, RTM_DELETE, del, none, none, 1, 0); r->dst = me; if (r->type & ROUTE_GWHISADDR) r->gw = peer; } else if ((r->type & ROUTE_DSTHISADDR) && r->dst.s_addr != peer.s_addr) { del.s_addr = r->dst.s_addr & r->mask.s_addr; rt_Set(bundle, RTM_DELETE, del, none, none, 1, 0); r->dst = peer; if (r->type & ROUTE_GWHISADDR) r->gw = peer; } else if ((r->type & ROUTE_DSTDNS0) && r->dst.s_addr != peer.s_addr) { del.s_addr = r->dst.s_addr & r->mask.s_addr; rt_Set(bundle, RTM_DELETE, del, none, none, 1, 0); r->dst = dns[0]; if (r->type & ROUTE_GWHISADDR) r->gw = peer; } else if ((r->type & ROUTE_DSTDNS1) && r->dst.s_addr != peer.s_addr) { del.s_addr = r->dst.s_addr & r->mask.s_addr; rt_Set(bundle, RTM_DELETE, del, none, none, 1, 0); r->dst = dns[1]; if (r->type & ROUTE_GWHISADDR) r->gw = peer; } else if ((r->type & ROUTE_GWHISADDR) && r->gw.s_addr != peer.s_addr) r->gw = peer; rt_Set(bundle, RTM_ADD, r->dst, r->gw, r->mask, 1, 0); } } void route_Add(struct sticky_route **rp, int type, struct in_addr dst, struct in_addr mask, struct in_addr gw) { struct sticky_route *r; int dsttype = type & ROUTE_DSTANY; r = NULL; while (*rp) { if ((dsttype && dsttype == ((*rp)->type & ROUTE_DSTANY)) || (!dsttype && (*rp)->dst.s_addr == dst.s_addr)) { /* Oops, we already have this route - unlink it */ free(r); /* impossible really */ r = *rp; *rp = r->next; } else rp = &(*rp)->next; } if (!r) r = (struct sticky_route *)malloc(sizeof(struct sticky_route)); r->type = type; r->next = NULL; r->dst = dst; r->mask = mask; r->gw = gw; *rp = r; } void route_Delete(struct sticky_route **rp, int type, struct in_addr dst) { struct sticky_route *r; int dsttype = type & ROUTE_DSTANY; for (; *rp; rp = &(*rp)->next) { if ((dsttype && dsttype == ((*rp)->type & ROUTE_DSTANY)) || (!dsttype && dst.s_addr == ((*rp)->dst.s_addr & (*rp)->mask.s_addr))) { 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 def; 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) { def = r->dst.s_addr == INADDR_ANY && r->mask.s_addr == INADDR_ANY; prompt_Printf(p, "%*sadd ", tlen ? 0 : indent, ""); tlen = 0; if (r->type & ROUTE_DSTMYADDR) prompt_Printf(p, "MYADDR"); else if (r->type & ROUTE_DSTHISADDR) prompt_Printf(p, "HISADDR"); else if (r->type & ROUTE_DSTDNS0) prompt_Printf(p, "DNS0"); else if (r->type & ROUTE_DSTDNS1) prompt_Printf(p, "DNS1"); else if (!def) prompt_Printf(p, "%s", inet_ntoa(r->dst)); if (def) prompt_Printf(p, "default "); else prompt_Printf(p, " %s ", inet_ntoa(r->mask)); if (r->type & ROUTE_GWHISADDR) prompt_Printf(p, "HISADDR\n"); else prompt_Printf(p, "%s\n", inet_ntoa(r->gw)); } } struct rtmsg { struct rt_msghdr m_rtm; char m_space[64]; }; int rt_Set(struct bundle *bundle, int cmd, struct in_addr dst, struct in_addr gateway, struct in_addr mask, int bang, int ssh) { struct rtmsg rtmes; int s, nb, wb; char *cp; const char *cmdstr; struct sockaddr_in rtdata; 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.ipcp.cfg.sendpipe > 0) { rtmes.m_rtm.rtm_rmx.rmx_sendpipe = bundle->ncp.ipcp.cfg.sendpipe; rtmes.m_rtm.rtm_inits |= RTV_SPIPE; } if (bundle->ncp.ipcp.cfg.recvpipe > 0) { rtmes.m_rtm.rtm_rmx.rmx_recvpipe = bundle->ncp.ipcp.cfg.recvpipe; rtmes.m_rtm.rtm_inits |= RTV_RPIPE; } } memset(&rtdata, '\0', sizeof rtdata); rtdata.sin_len = sizeof rtdata; rtdata.sin_family = AF_INET; rtdata.sin_port = 0; rtdata.sin_addr = dst; cp = rtmes.m_space; memcpy(cp, &rtdata, rtdata.sin_len); cp += rtdata.sin_len; if (cmd == RTM_ADD) { if (gateway.s_addr == INADDR_ANY) { if (!ssh) log_Printf(LogERROR, "rt_Set: Cannot add a route with" " destination 0.0.0.0\n"); close(s); return result; } else { rtdata.sin_addr = gateway; memcpy(cp, &rtdata, rtdata.sin_len); cp += rtdata.sin_len; rtmes.m_rtm.rtm_addrs |= RTA_GATEWAY; } } if (dst.s_addr == INADDR_ANY) mask.s_addr = INADDR_ANY; if (cmd == RTM_ADD || dst.s_addr == INADDR_ANY) { rtdata.sin_addr = mask; memcpy(cp, &rtdata, rtdata.sin_len); cp += rtdata.sin_len; rtmes.m_rtm.rtm_addrs |= RTA_NETMASK; } 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", inet_ntoa(dst)); log_Printf(LogTCPIP, "rt_Set: Gateway = %s\n", inet_ntoa(gateway)); log_Printf(LogTCPIP, "rt_Set: Mask = %s\n", inet_ntoa(mask)); 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", dst.s_addr == 0 ? "default" : inet_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", inet_ntoa(dst)); } else if (rtmes.m_rtm.rtm_errno == 0) { if (!ssh || errno != ENETUNREACH) log_Printf(LogWARN, "%s route failed: %s: errno: %s\n", cmdstr, inet_ntoa(dst), strerror(errno)); } else log_Printf(LogWARN, "%s route failed: %s: %s\n", cmdstr, inet_ntoa(dst), strerror(rtmes.m_rtm.rtm_errno)); } log_Printf(LogDEBUG, "wrote %d: cmd = %s, dst = %x, gateway = %x\n", wb, cmdstr, (unsigned)dst.s_addr, (unsigned)gateway.s_addr); close(s); return result; } void rt_Update(struct bundle *bundle, struct in_addr dst, struct in_addr gw) { struct rtmsg rtmes; int s, wb; struct sockaddr_in rtdata; 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 = 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 (bundle->ncp.ipcp.cfg.sendpipe > 0) { rtmes.m_rtm.rtm_rmx.rmx_sendpipe = bundle->ncp.ipcp.cfg.sendpipe; rtmes.m_rtm.rtm_inits |= RTV_SPIPE; } if (bundle->ncp.ipcp.cfg.recvpipe > 0) { rtmes.m_rtm.rtm_rmx.rmx_recvpipe = bundle->ncp.ipcp.cfg.recvpipe; rtmes.m_rtm.rtm_inits |= RTV_RPIPE; } rtmes.m_rtm.rtm_rmx.rmx_mtu = bundle->mtu; rtmes.m_rtm.rtm_inits |= RTV_MTU; memset(&rtdata, '\0', sizeof rtdata); rtdata.sin_len = sizeof rtdata; rtdata.sin_family = AF_INET; rtdata.sin_port = 0; rtdata.sin_addr = dst; memcpy(rtmes.m_space, &rtdata, rtdata.sin_len); rtmes.m_rtm.rtm_msglen = rtmes.m_space + rtdata.sin_len - (char *)&rtmes; wb = ID0write(s, &rtmes, rtmes.m_rtm.rtm_msglen); if (wb < 0) { log_Printf(LogTCPIP, "rt_Update failure:\n"); log_Printf(LogTCPIP, "rt_Update: Dst = %s\n", inet_ntoa(dst)); log_Printf(LogTCPIP, "rt_Update: Gateway = %s\n", inet_ntoa(gw)); if (rtmes.m_rtm.rtm_errno == 0) log_Printf(LogWARN, "%s: Change route failed: errno: %s\n", inet_ntoa(dst), strerror(errno)); else log_Printf(LogWARN, "%s: Change route failed: %s\n", inet_ntoa(dst), strerror(rtmes.m_rtm.rtm_errno)); } log_Printf(LogDEBUG, "wrote %d: cmd = Change, dst = %x, gateway = %x\n", wb, (unsigned)dst.s_addr, (unsigned)gw.s_addr); close(s); }