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) r = (struct sticky_route *)malloc(sizeof(struct sticky_route)); r->type = type; r->next = NULL; ncprange_copy(&r->dst, dst); ncpaddr_copy(&r->gw, gw); *rp = r; }
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); } }
int iface_Add(struct iface *iface, struct ncp *ncp, const struct ncprange *ifa, const struct ncpaddr *peer, int how) { int af, removed, s; unsigned n; struct ncpaddr ncplocal; struct iface_addr *addr, newaddr; af = ncprange_family(ifa); if ((s = ID0socket(af, SOCK_DGRAM, 0)) == -1) { log_Printf(LogERROR, "iface_Add: socket(): %s\n", strerror(errno)); return 0; } ncprange_getaddr(ifa, &ncplocal); for (n = 0; n < iface->addrs; n++) { if (ncprange_contains(&iface->addr[n].ifa, &ncplocal) || ncpaddr_equal(&iface->addr[n].peer, peer)) { /* Replace this sockaddr */ if (!(how & IFACE_FORCE_ADD)) { close(s); return 0; /* errno = EEXIST; */ } if (ncprange_equal(&iface->addr[n].ifa, ifa) && ncpaddr_equal(&iface->addr[n].peer, peer)) { close(s); ncp_IfaceAddrAdded(ncp, iface->addr + n); return 1; /* Already there */ } removed = iface_addr_Zap(iface->name, iface->addr + n, s); if (removed) ncp_IfaceAddrDeleted(ncp, iface->addr + n); ncprange_copy(&iface->addr[n].ifa, ifa); ncpaddr_copy(&iface->addr[n].peer, peer); if (!iface_addr_Add(iface->name, iface->addr + n, s)) { if (removed) { bcopy(iface->addr + n + 1, iface->addr + n, (iface->addrs - n - 1) * sizeof *iface->addr); iface->addrs--; n--; } close(s); return 0; } close(s); ncp_IfaceAddrAdded(ncp, iface->addr + n); return 1; } } addr = (struct iface_addr *)realloc (iface->addr, (iface->addrs + 1) * sizeof iface->addr[0]); if (addr == NULL) { log_Printf(LogERROR, "iface_inAdd: realloc: %s\n", strerror(errno)); close(s); return 0; } iface->addr = addr; ncprange_copy(&newaddr.ifa, ifa); ncpaddr_copy(&newaddr.peer, peer); newaddr.system = !!(how & IFACE_SYSTEM); if (!iface_addr_Add(iface->name, &newaddr, s)) { close(s); return 0; } if (how & IFACE_ADD_FIRST) { /* Stuff it at the start of our list */ n = 0; bcopy(iface->addr, iface->addr + 1, iface->addrs * sizeof *iface->addr); } else n = iface->addrs; iface->addrs++; memcpy(iface->addr + n, &newaddr, sizeof(*iface->addr)); close(s); ncp_IfaceAddrAdded(ncp, iface->addr + n); return 1; }
/* * rad_continue_send_request() has given us `got' (non-zero). Deal with it. */ static void radius_Process(struct radius *r, int got) { char *argv[MAXARGS], *nuke; struct bundle *bundle; int argc, addrs, res, width; size_t len; struct ncprange dest; struct ncpaddr gw; const void *data; const char *stype; u_int32_t ipaddr, vendor; struct in_addr ip; #ifndef NOINET6 uint8_t ipv6addr[INET6_ADDRSTRLEN]; struct in6_addr ip6; #endif r->cx.fd = -1; /* Stop select()ing */ stype = r->cx.auth ? "auth" : "acct"; switch (got) { case RAD_ACCESS_ACCEPT: log_Printf(log_IsKept(LogRADIUS) ? LogRADIUS : LogPHASE, "Radius(%s): ACCEPT received\n", stype); if (!r->cx.auth) { rad_close(r->cx.rad); return; } break; case RAD_ACCESS_REJECT: log_Printf(log_IsKept(LogRADIUS) ? LogRADIUS : LogPHASE, "Radius(%s): REJECT received\n", stype); if (!r->cx.auth) { rad_close(r->cx.rad); return; } break; case RAD_ACCESS_CHALLENGE: /* we can't deal with this (for now) ! */ log_Printf(log_IsKept(LogRADIUS) ? LogRADIUS : LogPHASE, "Radius: CHALLENGE received (can't handle yet)\n"); if (r->cx.auth) auth_Failure(r->cx.auth); rad_close(r->cx.rad); return; case RAD_ACCOUNTING_RESPONSE: /* * It's probably not ideal to log this at PHASE level as we'll see * too much stuff going to the log when ``set rad_alive'' is used. * So we differ from older behaviour (ppp version 3.1 and before) * and just log accounting responses to LogRADIUS. */ log_Printf(LogRADIUS, "Radius(%s): Accounting response received\n", stype); if (r->cx.auth) auth_Failure(r->cx.auth); /* unexpected !!! */ /* No further processing for accounting requests, please */ rad_close(r->cx.rad); return; case -1: log_Printf(log_IsKept(LogRADIUS) ? LogRADIUS : LogPHASE, "radius(%s): %s\n", stype, rad_strerror(r->cx.rad)); if (r->cx.auth) auth_Failure(r->cx.auth); rad_close(r->cx.rad); return; default: log_Printf(LogERROR, "rad_send_request(%s): Failed %d: %s\n", stype, got, rad_strerror(r->cx.rad)); if (r->cx.auth) auth_Failure(r->cx.auth); rad_close(r->cx.rad); return; } /* Let's see what we've got in our reply */ r->ip.s_addr = r->mask.s_addr = INADDR_NONE; r->mtu = 0; r->vj = 0; while ((res = rad_get_attr(r->cx.rad, &data, &len)) > 0) { switch (res) { case RAD_FRAMED_IP_ADDRESS: r->ip = rad_cvt_addr(data); log_Printf(log_IsKept(LogRADIUS) ? LogRADIUS : LogPHASE, " IP %s\n", inet_ntoa(r->ip)); break; case RAD_FILTER_ID: free(r->filterid); if ((r->filterid = rad_cvt_string(data, len)) == NULL) { log_Printf(LogERROR, "rad_cvt_string: %s\n", rad_strerror(r->cx.rad)); auth_Failure(r->cx.auth); rad_close(r->cx.rad); return; } log_Printf(log_IsKept(LogRADIUS) ? LogRADIUS : LogPHASE, " Filter \"%s\"\n", r->filterid); break; case RAD_SESSION_TIMEOUT: r->sessiontime = rad_cvt_int(data); log_Printf(log_IsKept(LogRADIUS) ? LogRADIUS : LogPHASE, " Session-Timeout %lu\n", r->sessiontime); break; case RAD_FRAMED_IP_NETMASK: r->mask = rad_cvt_addr(data); log_Printf(log_IsKept(LogRADIUS) ? LogRADIUS : LogPHASE, " Netmask %s\n", inet_ntoa(r->mask)); break; case RAD_FRAMED_MTU: r->mtu = rad_cvt_int(data); log_Printf(log_IsKept(LogRADIUS) ? LogRADIUS : LogPHASE, " MTU %lu\n", r->mtu); break; case RAD_FRAMED_ROUTING: /* Disabled for now - should we automatically set up some filters ? */ /* rad_cvt_int(data); */ /* bit 1 = Send routing packets */ /* bit 2 = Receive routing packets */ break; case RAD_FRAMED_COMPRESSION: r->vj = rad_cvt_int(data) == 1 ? 1 : 0; log_Printf(log_IsKept(LogRADIUS) ? LogRADIUS : LogPHASE, " VJ %sabled\n", r->vj ? "en" : "dis"); break; case RAD_FRAMED_ROUTE: /* * We expect a string of the format ``dest[/bits] gw [metrics]'' * Any specified metrics are ignored. MYADDR and HISADDR are * understood for ``dest'' and ``gw'' and ``0.0.0.0'' is the same * as ``HISADDR''. */ if ((nuke = rad_cvt_string(data, len)) == NULL) { log_Printf(LogERROR, "rad_cvt_string: %s\n", rad_strerror(r->cx.rad)); auth_Failure(r->cx.auth); rad_close(r->cx.rad); return; } log_Printf(log_IsKept(LogRADIUS) ? LogRADIUS : LogPHASE, " Route: %s\n", nuke); bundle = r->cx.auth->physical->dl->bundle; ip.s_addr = INADDR_ANY; ncpaddr_setip4(&gw, ip); ncprange_setip4host(&dest, ip); argc = command_Interpret(nuke, strlen(nuke), argv); if (argc < 0) log_Printf(LogWARN, "radius: %s: Syntax error\n", argc == 1 ? argv[0] : "\"\""); else if (argc < 2) log_Printf(LogWARN, "radius: %s: Invalid route\n", argc == 1 ? argv[0] : "\"\""); else if ((strcasecmp(argv[0], "default") != 0 && !ncprange_aton(&dest, &bundle->ncp, argv[0])) || !ncpaddr_aton(&gw, &bundle->ncp, argv[1])) log_Printf(LogWARN, "radius: %s %s: Invalid route\n", argv[0], argv[1]); else { ncprange_getwidth(&dest, &width); if (width == 32 && strchr(argv[0], '/') == NULL) { /* No mask specified - use the natural mask */ ncprange_getip4addr(&dest, &ip); ncprange_setip4mask(&dest, addr2mask(ip)); } addrs = 0; if (!strncasecmp(argv[0], "HISADDR", 7)) addrs = ROUTE_DSTHISADDR; else if (!strncasecmp(argv[0], "MYADDR", 6)) addrs = ROUTE_DSTMYADDR; if (ncpaddr_getip4addr(&gw, &ipaddr) && ipaddr == INADDR_ANY) { addrs |= ROUTE_GWHISADDR; ncpaddr_setip4(&gw, bundle->ncp.ipcp.peer_ip); } else if (strcasecmp(argv[1], "HISADDR") == 0) addrs |= ROUTE_GWHISADDR; route_Add(&r->routes, addrs, &dest, &gw); } free(nuke); break; case RAD_REPLY_MESSAGE: free(r->repstr); if ((r->repstr = rad_cvt_string(data, len)) == NULL) { log_Printf(LogERROR, "rad_cvt_string: %s\n", rad_strerror(r->cx.rad)); auth_Failure(r->cx.auth); rad_close(r->cx.rad); return; } log_Printf(log_IsKept(LogRADIUS) ? LogRADIUS : LogPHASE, " Reply-Message \"%s\"\n", r->repstr); break; #ifndef NOINET6 case RAD_FRAMED_IPV6_PREFIX: free(r->ipv6prefix); if ((r->ipv6prefix = rad_cvt_ipv6prefix(data, len)) == NULL) { log_Printf(LogERROR, "rad_cvt_ipv6prefix: %s\n", "Malformed attribute in response"); auth_Failure(r->cx.auth); rad_close(r->cx.rad); return; } inet_ntop(AF_INET6, &r->ipv6prefix[2], ipv6addr, sizeof(ipv6addr)); log_Printf(log_IsKept(LogRADIUS) ? LogRADIUS : LogPHASE, " IPv6 %s/%d\n", ipv6addr, r->ipv6prefix[1]); break; case RAD_FRAMED_IPV6_ROUTE: /* * We expect a string of the format ``dest[/bits] gw [metrics]'' * Any specified metrics are ignored. MYADDR6 and HISADDR6 are * understood for ``dest'' and ``gw'' and ``::'' is the same * as ``HISADDR6''. */ if ((nuke = rad_cvt_string(data, len)) == NULL) { log_Printf(LogERROR, "rad_cvt_string: %s\n", rad_strerror(r->cx.rad)); auth_Failure(r->cx.auth); rad_close(r->cx.rad); return; } log_Printf(log_IsKept(LogRADIUS) ? LogRADIUS : LogPHASE, " IPv6 Route: %s\n", nuke); bundle = r->cx.auth->physical->dl->bundle; ncpaddr_setip6(&gw, &in6addr_any); ncprange_set(&dest, &gw, 0); argc = command_Interpret(nuke, strlen(nuke), argv); if (argc < 0) log_Printf(LogWARN, "radius: %s: Syntax error\n", argc == 1 ? argv[0] : "\"\""); else if (argc < 2) log_Printf(LogWARN, "radius: %s: Invalid route\n", argc == 1 ? argv[0] : "\"\""); else if ((strcasecmp(argv[0], "default") != 0 && !ncprange_aton(&dest, &bundle->ncp, argv[0])) || !ncpaddr_aton(&gw, &bundle->ncp, argv[1])) log_Printf(LogWARN, "radius: %s %s: Invalid route\n", argv[0], argv[1]); else { addrs = 0; if (!strncasecmp(argv[0], "HISADDR6", 8)) addrs = ROUTE_DSTHISADDR6; else if (!strncasecmp(argv[0], "MYADDR6", 7)) addrs = ROUTE_DSTMYADDR6; if (ncpaddr_getip6(&gw, &ip6) && IN6_IS_ADDR_UNSPECIFIED(&ip6)) { addrs |= ROUTE_GWHISADDR6; ncpaddr_copy(&gw, &bundle->ncp.ipv6cp.hisaddr); } else if (strcasecmp(argv[1], "HISADDR6") == 0) addrs |= ROUTE_GWHISADDR6; route_Add(&r->ipv6routes, addrs, &dest, &gw); } free(nuke); break; #endif case RAD_VENDOR_SPECIFIC: if ((res = rad_get_vendor_attr(&vendor, &data, &len)) <= 0) { log_Printf(LogERROR, "rad_get_vendor_attr: %s (failing!)\n", rad_strerror(r->cx.rad)); auth_Failure(r->cx.auth); rad_close(r->cx.rad); return; } switch (vendor) { case RAD_VENDOR_MICROSOFT: switch (res) { #ifndef NODES case RAD_MICROSOFT_MS_CHAP_ERROR: free(r->errstr); if (len == 0) r->errstr = NULL; else { if (len < 3 || ((const char *)data)[1] != '=') { /* * Only point at the String field if we don't think the * peer has misformatted the response. */ data = (const char *)data + 1; len--; } else log_Printf(LogWARN, "Warning: The MS-CHAP-Error " "attribute is mis-formatted. Compensating\n"); if ((r->errstr = rad_cvt_string((const char *)data, len)) == NULL) { log_Printf(LogERROR, "rad_cvt_string: %s\n", rad_strerror(r->cx.rad)); auth_Failure(r->cx.auth); rad_close(r->cx.rad); return; } log_Printf(log_IsKept(LogRADIUS) ? LogRADIUS : LogPHASE, " MS-CHAP-Error \"%s\"\n", r->errstr); } break; case RAD_MICROSOFT_MS_CHAP2_SUCCESS: free(r->msrepstr); if (len == 0) r->msrepstr = NULL; else { if (len < 3 || ((const char *)data)[1] != '=') { /* * Only point at the String field if we don't think the * peer has misformatted the response. */ data = (const char *)data + 1; len--; } else log_Printf(LogWARN, "Warning: The MS-CHAP2-Success " "attribute is mis-formatted. Compensating\n"); if ((r->msrepstr = rad_cvt_string((const char *)data, len)) == NULL) { log_Printf(LogERROR, "rad_cvt_string: %s\n", rad_strerror(r->cx.rad)); auth_Failure(r->cx.auth); rad_close(r->cx.rad); return; } log_Printf(log_IsKept(LogRADIUS) ? LogRADIUS : LogPHASE, " MS-CHAP2-Success \"%s\"\n", r->msrepstr); } break; case RAD_MICROSOFT_MS_MPPE_ENCRYPTION_POLICY: r->mppe.policy = rad_cvt_int(data); log_Printf(log_IsKept(LogRADIUS) ? LogRADIUS : LogPHASE, " MS-MPPE-Encryption-Policy %s\n", radius_policyname(r->mppe.policy)); break; case RAD_MICROSOFT_MS_MPPE_ENCRYPTION_TYPES: r->mppe.types = rad_cvt_int(data); log_Printf(log_IsKept(LogRADIUS) ? LogRADIUS : LogPHASE, " MS-MPPE-Encryption-Types %s\n", radius_typesname(r->mppe.types)); break; case RAD_MICROSOFT_MS_MPPE_RECV_KEY: free(r->mppe.recvkey); demangle(r, data, len, &r->mppe.recvkey, &r->mppe.recvkeylen); log_Printf(log_IsKept(LogRADIUS) ? LogRADIUS : LogPHASE, " MS-MPPE-Recv-Key ********\n"); break; case RAD_MICROSOFT_MS_MPPE_SEND_KEY: demangle(r, data, len, &r->mppe.sendkey, &r->mppe.sendkeylen); log_Printf(log_IsKept(LogRADIUS) ? LogRADIUS : LogPHASE, " MS-MPPE-Send-Key ********\n"); break; #endif default: log_Printf(LogDEBUG, "Dropping MICROSOFT vendor specific " "RADIUS attribute %d\n", res); break; } break; default: log_Printf(LogDEBUG, "Dropping vendor %lu RADIUS attribute %d\n", (unsigned long)vendor, res); break; } break; default: log_Printf(LogDEBUG, "Dropping RADIUS attribute %d\n", res); break; } } if (res == -1) { log_Printf(LogERROR, "rad_get_attr: %s (failing!)\n", rad_strerror(r->cx.rad)); auth_Failure(r->cx.auth); } else if (got == RAD_ACCESS_REJECT) auth_Failure(r->cx.auth); else { r->valid = 1; auth_Success(r->cx.auth); } rad_close(r->cx.rad); }