+ /* Check some options */
+
+ if(get_config_bool(lookup_config(config_tree, "IndirectData"), &choice) && choice)
+ myself->options |= OPTION_INDIRECT;
+
+ if(get_config_bool(lookup_config(config_tree, "TCPOnly"), &choice) && choice)
+ myself->options |= OPTION_TCPONLY;
+
+ if(myself->options & OPTION_TCPONLY)
+ myself->options |= OPTION_INDIRECT;
+
+ get_config_bool(lookup_config(config_tree, "DirectOnly"), &directonly);
+ get_config_bool(lookup_config(config_tree, "StrictSubnets"), &strictsubnets);
+ get_config_bool(lookup_config(config_tree, "TunnelServer"), &tunnelserver);
+ get_config_bool(lookup_config(config_tree, "LocalDiscovery"), &localdiscovery);
+ strictsubnets |= tunnelserver;
+
+ if(get_config_string(lookup_config(config_tree, "Mode"), &mode)) {
+ if(!strcasecmp(mode, "router"))
+ routing_mode = RMODE_ROUTER;
+ else if(!strcasecmp(mode, "switch"))
+ routing_mode = RMODE_SWITCH;
+ else if(!strcasecmp(mode, "hub"))
+ routing_mode = RMODE_HUB;
+ else {
+ logger(LOG_ERR, "Invalid routing mode!");
+ return false;
+ }
+ free(mode);
+ }
+
+ if(get_config_string(lookup_config(config_tree, "Forwarding"), &mode)) {
+ if(!strcasecmp(mode, "off"))
+ forwarding_mode = FMODE_OFF;
+ else if(!strcasecmp(mode, "internal"))
+ forwarding_mode = FMODE_INTERNAL;
+ else if(!strcasecmp(mode, "kernel"))
+ forwarding_mode = FMODE_KERNEL;
+ else {
+ logger(LOG_ERR, "Invalid forwarding mode!");
+ return false;
+ }
+ free(mode);
+ }
+
+ choice = true;
+ get_config_bool(lookup_config(config_tree, "PMTUDiscovery"), &choice);
+ if(choice)
+ myself->options |= OPTION_PMTU_DISCOVERY;
+
+ choice = true;
+ get_config_bool(lookup_config(config_tree, "ClampMSS"), &choice);
+ if(choice)
+ myself->options |= OPTION_CLAMP_MSS;
+
+ get_config_bool(lookup_config(config_tree, "PriorityInheritance"), &priorityinheritance);
+ get_config_bool(lookup_config(config_tree, "DecrementTTL"), &decrement_ttl);
+ get_config_bool(lookup_config(config_tree, "Broadcast"), &broadcast);
+
+#if !defined(SOL_IP) || !defined(IP_TOS)
+ if(priorityinheritance)
+ logger(LOG_WARNING, "%s not supported on this platform", "PriorityInheritance");
+#endif
+
+ if(!get_config_int(lookup_config(config_tree, "MACExpire"), &macexpire))
+ macexpire = 600;
+
+ if(get_config_int(lookup_config(config_tree, "MaxTimeout"), &maxtimeout)) {
+ if(maxtimeout <= 0) {
+ logger(LOG_ERR, "Bogus maximum timeout!");
+ return false;
+ }
+ } else
+ maxtimeout = 900;
+
+ if(get_config_int(lookup_config(config_tree, "UDPRcvBuf"), &udp_rcvbuf)) {
+ if(udp_rcvbuf <= 0) {
+ logger(LOG_ERR, "UDPRcvBuf cannot be negative!");
+ return false;
+ }
+ }
+
+ if(get_config_int(lookup_config(config_tree, "UDPSndBuf"), &udp_sndbuf)) {
+ if(udp_sndbuf <= 0) {
+ logger(LOG_ERR, "UDPSndBuf cannot be negative!");
+ return false;
+ }
+ }
+
+ if(get_config_int(lookup_config(config_tree, "ReplayWindow"), &replaywin_int)) {
+ if(replaywin_int < 0) {
+ logger(LOG_ERR, "ReplayWindow cannot be negative!");
+ return false;
+ }
+ replaywin = (unsigned)replaywin_int;
+ }
+
+ if(get_config_string(lookup_config(config_tree, "AddressFamily"), &afname)) {
+ if(!strcasecmp(afname, "IPv4"))
+ addressfamily = AF_INET;
+ else if(!strcasecmp(afname, "IPv6"))
+ addressfamily = AF_INET6;
+ else if(!strcasecmp(afname, "any"))
+ addressfamily = AF_UNSPEC;
+ else {
+ logger(LOG_ERR, "Invalid address family!");
+ return false;
+ }
+ free(afname);
+ }
+
+ get_config_bool(lookup_config(config_tree, "Hostnames"), &hostnames);
+
+ /* Generate packet encryption key */
+
+ if(get_config_string
+ (lookup_config(config_tree, "Cipher"), &cipher)) {
+ if(!strcasecmp(cipher, "none")) {
+ myself->incipher = NULL;
+ } else {
+ myself->incipher = EVP_get_cipherbyname(cipher);
+
+ if(!myself->incipher) {
+ logger(LOG_ERR, "Unrecognized cipher type!");
+ return false;
+ }
+ }
+ } else
+ myself->incipher = EVP_bf_cbc();
+
+ if(myself->incipher)
+ myself->inkeylength = myself->incipher->key_len + myself->incipher->iv_len;
+ else
+ myself->inkeylength = 1;
+
+ myself->connection->outcipher = EVP_bf_ofb();
+
+ if(!get_config_int(lookup_config(config_tree, "KeyExpire"), &keylifetime))
+ keylifetime = 3600;
+
+ keyexpires = now + keylifetime;
+
+ /* Check if we want to use message authentication codes... */
+
+ if(get_config_string(lookup_config(config_tree, "Digest"), &digest)) {
+ if(!strcasecmp(digest, "none")) {
+ myself->indigest = NULL;
+ } else {
+ myself->indigest = EVP_get_digestbyname(digest);
+
+ if(!myself->indigest) {
+ logger(LOG_ERR, "Unrecognized digest type!");
+ return false;
+ }
+ }
+ } else
+ myself->indigest = EVP_sha1();
+
+ myself->connection->outdigest = EVP_sha1();
+
+ if(get_config_int(lookup_config(config_tree, "MACLength"), &myself->inmaclength)) {
+ if(myself->indigest) {
+ if(myself->inmaclength > myself->indigest->md_size) {
+ logger(LOG_ERR, "MAC length exceeds size of digest!");
+ return false;
+ } else if(myself->inmaclength < 0) {
+ logger(LOG_ERR, "Bogus MAC length!");
+ return false;
+ }
+ }
+ } else
+ myself->inmaclength = 4;
+
+ myself->connection->outmaclength = 0;
+
+ /* Compression */
+
+ if(get_config_int(lookup_config(config_tree, "Compression"), &myself->incompression)) {
+ if(myself->incompression < 0 || myself->incompression > 11) {
+ logger(LOG_ERR, "Bogus compression level!");
+ return false;
+ }
+ } else
+ myself->incompression = 0;
+
+ myself->connection->outcompression = 0;
+
+ /* Done */
+
+ myself->nexthop = myself;
+ myself->via = myself;
+ myself->status.reachable = true;
+ node_add(myself);
+
+ graph();
+
+ if(strictsubnets)
+ load_all_subnets();
+
+ /* Open device */
+
+ devops = os_devops;
+
+ if(get_config_string(lookup_config(config_tree, "DeviceType"), &type)) {
+ if(!strcasecmp(type, "dummy"))
+ devops = dummy_devops;
+ else if(!strcasecmp(type, "raw_socket"))
+ devops = raw_socket_devops;
+#ifdef ENABLE_UML
+ else if(!strcasecmp(type, "uml"))
+ devops = uml_devops;
+#endif
+#ifdef ENABLE_VDE
+ else if(!strcasecmp(type, "vde"))
+ devops = vde_devops;
+#endif
+ }
+
+ if(!devops.setup())
+ return false;
+
+ /* Run tinc-up script to further initialize the tap interface */
+ xasprintf(&envp[0], "NETNAME=%s", netname ? : "");
+ xasprintf(&envp[1], "DEVICE=%s", device ? : "");
+ xasprintf(&envp[2], "INTERFACE=%s", iface ? : "");
+ xasprintf(&envp[3], "NAME=%s", myself->name);
+ envp[4] = NULL;
+
+ execute_script("tinc-up", envp);
+
+ for(i = 0; i < 5; i++)
+ free(envp[i]);