+bool read_rsa_public_key(connection_t *c) {
+ if(ecdsa_active(c->ecdsa))
+ return true;
+
+ FILE *fp;
+ char *fname;
+ char *n;
+
+ /* First, check for simple PublicKey statement */
+
+ if(get_config_string(lookup_config(c->config_tree, "PublicKey"), &n)) {
+ c->rsa = rsa_set_hex_public_key(n, "FFFF");
+ free(n);
+ return c->rsa;
+ }
+
+ /* Else, check for PublicKeyFile statement and read it */
+
+ if(!get_config_string(lookup_config(c->config_tree, "PublicKeyFile"), &fname))
+ xasprintf(&fname, "%s" SLASH "hosts" SLASH "%s", confbase, c->name);
+
+ fp = fopen(fname, "r");
+
+ if(!fp) {
+ logger(DEBUG_ALWAYS, LOG_ERR, "Error reading RSA public key file `%s': %s", fname, strerror(errno));
+ free(fname);
+ return false;
+ }
+
+ c->rsa = rsa_read_pem_public_key(fp);
+ fclose(fp);
+
+ if(!c->rsa)
+ logger(DEBUG_ALWAYS, LOG_ERR, "Reading RSA public key file `%s' failed: %s", fname, strerror(errno));
+ free(fname);
+ return c->rsa;
+}
+
+static bool read_ecdsa_private_key(void) {
+ FILE *fp;
+ char *fname;
+
+ /* Check for PrivateKeyFile statement and read it */
+
+ if(!get_config_string(lookup_config(config_tree, "ECDSAPrivateKeyFile"), &fname))
+ xasprintf(&fname, "%s" SLASH "ecdsa_key.priv", confbase);
+
+ fp = fopen(fname, "r");
+
+ if(!fp) {
+ logger(DEBUG_ALWAYS, LOG_ERR, "Error reading ECDSA private key file `%s': %s", fname, strerror(errno));
+ if(errno == ENOENT)
+ logger(DEBUG_ALWAYS, LOG_INFO, "Create an ECDSA keypair with `tinc -n %s generate-ecdsa-keys'.", netname ?: ".");
+ free(fname);
+ return false;
+ }
+
+#if !defined(HAVE_MINGW) && !defined(HAVE_CYGWIN)
+ struct stat s;
+
+ if(fstat(fileno(fp), &s)) {
+ logger(DEBUG_ALWAYS, LOG_ERR, "Could not stat ECDSA private key file `%s': %s'", fname, strerror(errno));
+ free(fname);
+ return false;
+ }
+
+ if(s.st_mode & ~0100700)
+ logger(DEBUG_ALWAYS, LOG_WARNING, "Warning: insecure file permissions for ECDSA private key file `%s'!", fname);
+#endif
+
+ myself->connection->ecdsa = ecdsa_read_pem_private_key(fp);
+ fclose(fp);
+
+ if(!myself->connection->ecdsa)
+ logger(DEBUG_ALWAYS, LOG_ERR, "Reading ECDSA private key file `%s' failed: %s", fname, strerror(errno));
+ free(fname);
+ return myself->connection->ecdsa;
+}
+
+static bool read_invitation_key(void) {
+ FILE *fp;
+ char *fname;
+
+ if(invitation_key) {
+ ecdsa_free(invitation_key);
+ invitation_key = NULL;
+ }
+
+ xasprintf(&fname, "%s" SLASH "invitations" SLASH "ecdsa_key.priv", confbase);
+
+ fp = fopen(fname, "r");
+
+ if(fp) {
+ invitation_key = ecdsa_read_pem_private_key(fp);
+ fclose(fp);
+ if(!invitation_key)
+ logger(DEBUG_ALWAYS, LOG_ERR, "Reading ECDSA private key file `%s' failed: %s", fname, strerror(errno));
+ }
+
+ free(fname);
+ return invitation_key;
+}
+
+static bool read_rsa_private_key(void) {
+ FILE *fp;
+ char *fname;
+ char *n, *d;
+
+ /* First, check for simple PrivateKey statement */
+
+ if(get_config_string(lookup_config(config_tree, "PrivateKey"), &d)) {
+ if(!get_config_string(lookup_config(config_tree, "PublicKey"), &n)) {
+ logger(DEBUG_ALWAYS, LOG_ERR, "PrivateKey used but no PublicKey found!");
+ free(d);
+ return false;
+ }
+ myself->connection->rsa = rsa_set_hex_private_key(n, "FFFF", d);
+ free(n);
+ free(d);
+ return myself->connection->rsa;
+ }
+
+ /* Else, check for PrivateKeyFile statement and read it */
+
+ if(!get_config_string(lookup_config(config_tree, "PrivateKeyFile"), &fname))
+ xasprintf(&fname, "%s" SLASH "rsa_key.priv", confbase);
+
+ fp = fopen(fname, "r");
+
+ if(!fp) {
+ logger(DEBUG_ALWAYS, LOG_ERR, "Error reading RSA private key file `%s': %s",
+ fname, strerror(errno));
+ free(fname);
+ return false;
+ }
+
+#if !defined(HAVE_MINGW) && !defined(HAVE_CYGWIN)
+ struct stat s;
+
+ if(fstat(fileno(fp), &s)) {
+ logger(DEBUG_ALWAYS, LOG_ERR, "Could not stat RSA private key file `%s': %s'", fname, strerror(errno));
+ free(fname);
+ return false;
+ }
+
+ if(s.st_mode & ~0100700)
+ logger(DEBUG_ALWAYS, LOG_WARNING, "Warning: insecure file permissions for RSA private key file `%s'!", fname);
+#endif
+
+ myself->connection->rsa = rsa_read_pem_private_key(fp);
+ fclose(fp);
+
+ if(!myself->connection->rsa)
+ logger(DEBUG_ALWAYS, LOG_ERR, "Reading RSA private key file `%s' failed: %s", fname, strerror(errno));
+ free(fname);
+ return myself->connection->rsa;
+}
+
+static timeout_t keyexpire_timeout;
+
+static void keyexpire_handler(void *data) {
+ regenerate_key();
+ timeout_set(data, &(struct timeval){keylifetime, rand() % 100000});
+}
+
+void regenerate_key(void) {
+ logger(DEBUG_STATUS, LOG_INFO, "Expiring symmetric keys");
+ send_key_changed();
+}
+
+/*
+ Read Subnets from all host config files
+*/
+void load_all_subnets(void) {
+ DIR *dir;
+ struct dirent *ent;
+ char *dname;
+
+ xasprintf(&dname, "%s" SLASH "hosts", confbase);
+ dir = opendir(dname);
+ if(!dir) {
+ logger(DEBUG_ALWAYS, LOG_ERR, "Could not open %s: %s", dname, strerror(errno));
+ free(dname);
+ return;
+ }
+
+ while((ent = readdir(dir))) {
+ if(!check_id(ent->d_name))
+ continue;
+
+ node_t *n = lookup_node(ent->d_name);
+ #ifdef _DIRENT_HAVE_D_TYPE
+ //if(ent->d_type != DT_REG)
+ // continue;
+ #endif
+
+ splay_tree_t *config_tree;
+ init_configuration(&config_tree);
+ read_config_options(config_tree, ent->d_name);
+ read_host_config(config_tree, ent->d_name);
+
+ if(!n) {
+ n = new_node();
+ n->name = xstrdup(ent->d_name);
+ node_add(n);
+ }
+
+ for(config_t *cfg = lookup_config(config_tree, "Subnet"); cfg; cfg = lookup_config_next(config_tree, cfg)) {
+ subnet_t *s, *s2;
+
+ if(!get_config_subnet(cfg, &s))
+ continue;
+
+ if((s2 = lookup_subnet(n, s))) {
+ s2->expires = -1;
+ } else {
+ subnet_add(n, s);
+ }
+ }
+
+ exit_configuration(&config_tree);
+ }
+
+ closedir(dir);
+}
+
+void load_all_nodes(void) {
+ DIR *dir;
+ struct dirent *ent;
+ char *dname;
+
+ xasprintf(&dname, "%s" SLASH "hosts", confbase);
+ dir = opendir(dname);
+ if(!dir) {
+ logger(DEBUG_ALWAYS, LOG_ERR, "Could not open %s: %s", dname, strerror(errno));
+ free(dname);
+ return;
+ }
+
+ while((ent = readdir(dir))) {
+ if(!check_id(ent->d_name))
+ continue;
+
+ node_t *n = lookup_node(ent->d_name);
+ if(n)
+ continue;
+
+ n = new_node();
+ n->name = xstrdup(ent->d_name);
+ node_add(n);
+ }
+
+ closedir(dir);
+}
+
+
+char *get_name(void) {
+ char *name = NULL;
+
+ get_config_string(lookup_config(config_tree, "Name"), &name);
+
+ if(!name)
+ return NULL;
+
+ if(*name == '$') {
+ char *envname = getenv(name + 1);
+ char hostname[32] = "";
+ if(!envname) {
+ if(strcmp(name + 1, "HOST")) {
+ logger(DEBUG_ALWAYS, LOG_ERR, "Invalid Name: environment variable %s does not exist\n", name + 1);
+ return false;
+ }
+ if(gethostname(hostname, sizeof hostname) || !*hostname) {
+ logger(DEBUG_ALWAYS, LOG_ERR, "Could not get hostname: %s\n", strerror(errno));
+ return false;
+ }
+ hostname[31] = 0;
+ envname = hostname;
+ }
+ free(name);
+ name = xstrdup(envname);
+ for(char *c = name; *c; c++)
+ if(!isalnum(*c))
+ *c = '_';
+ }
+
+ if(!check_id(name)) {
+ logger(DEBUG_ALWAYS, LOG_ERR, "Invalid name for myself!");
+ free(name);
+ return false;
+ }
+
+ return name;
+}
+
+bool setup_myself_reloadable(void) {
+ char *proxy = NULL;
+ char *rmode = NULL;
+ char *fmode = NULL;
+ char *bmode = NULL;
+ char *afname = NULL;
+ char *address = NULL;
+ char *space;
+ bool choice;
+
+ free(scriptinterpreter);
+ scriptinterpreter = NULL;
+ get_config_string(lookup_config(config_tree, "ScriptsInterpreter"), &scriptinterpreter);
+
+
+ free(scriptextension);
+ if(!get_config_string(lookup_config(config_tree, "ScriptsExtension"), &scriptextension))
+ scriptextension = xstrdup("");
+
+ get_config_string(lookup_config(config_tree, "Proxy"), &proxy);
+ if(proxy) {
+ if((space = strchr(proxy, ' ')))
+ *space++ = 0;
+
+ if(!strcasecmp(proxy, "none")) {
+ proxytype = PROXY_NONE;
+ } else if(!strcasecmp(proxy, "socks4")) {
+ proxytype = PROXY_SOCKS4;
+ } else if(!strcasecmp(proxy, "socks4a")) {
+ proxytype = PROXY_SOCKS4A;
+ } else if(!strcasecmp(proxy, "socks5")) {
+ proxytype = PROXY_SOCKS5;
+ } else if(!strcasecmp(proxy, "http")) {
+ proxytype = PROXY_HTTP;
+ } else if(!strcasecmp(proxy, "exec")) {
+ proxytype = PROXY_EXEC;
+ } else {
+ logger(DEBUG_ALWAYS, LOG_ERR, "Unknown proxy type %s!", proxy);
+ return false;
+ }
+
+ switch(proxytype) {
+ case PROXY_NONE:
+ default:
+ break;
+
+ case PROXY_EXEC:
+ if(!space || !*space) {
+ logger(DEBUG_ALWAYS, LOG_ERR, "Argument expected for proxy type exec!");
+ return false;
+ }
+ proxyhost = xstrdup(space);
+ break;
+
+ case PROXY_SOCKS4:
+ case PROXY_SOCKS4A:
+ case PROXY_SOCKS5:
+ case PROXY_HTTP:
+ proxyhost = space;
+ if(space && (space = strchr(space, ' ')))
+ *space++ = 0, proxyport = space;
+ if(space && (space = strchr(space, ' ')))
+ *space++ = 0, proxyuser = space;
+ if(space && (space = strchr(space, ' ')))
+ *space++ = 0, proxypass = space;
+ if(!proxyhost || !*proxyhost || !proxyport || !*proxyport) {
+ logger(DEBUG_ALWAYS, LOG_ERR, "Host and port argument expected for proxy!");
+ return false;
+ }
+ proxyhost = xstrdup(proxyhost);
+ proxyport = xstrdup(proxyport);
+ if(proxyuser && *proxyuser)
+ proxyuser = xstrdup(proxyuser);
+ if(proxypass && *proxypass)
+ proxypass = xstrdup(proxypass);
+ break;
+ }
+
+ free(proxy);
+ }
+
+ 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, "LocalDiscovery"), &localdiscovery);
+
+ memset(&localdiscovery_address, 0, sizeof localdiscovery_address);
+ if(get_config_string(lookup_config(config_tree, "LocalDiscoveryAddress"), &address)) {
+ struct addrinfo *ai = str2addrinfo(address, myport, SOCK_DGRAM);
+ free(address);
+ if(!ai)
+ return false;
+ memcpy(&localdiscovery_address, ai->ai_addr, ai->ai_addrlen);
+ }
+
+
+ if(get_config_string(lookup_config(config_tree, "Mode"), &rmode)) {
+ if(!strcasecmp(rmode, "router"))
+ routing_mode = RMODE_ROUTER;
+ else if(!strcasecmp(rmode, "switch"))
+ routing_mode = RMODE_SWITCH;
+ else if(!strcasecmp(rmode, "hub"))
+ routing_mode = RMODE_HUB;
+ else {
+ logger(DEBUG_ALWAYS, LOG_ERR, "Invalid routing mode!");
+ return false;
+ }
+ free(rmode);
+ }
+
+ if(get_config_string(lookup_config(config_tree, "Forwarding"), &fmode)) {
+ if(!strcasecmp(fmode, "off"))
+ forwarding_mode = FMODE_OFF;
+ else if(!strcasecmp(fmode, "internal"))
+ forwarding_mode = FMODE_INTERNAL;
+ else if(!strcasecmp(fmode, "kernel"))
+ forwarding_mode = FMODE_KERNEL;
+ else {
+ logger(DEBUG_ALWAYS, LOG_ERR, "Invalid forwarding mode!");
+ return false;
+ }
+ free(fmode);
+ }
+
+ 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);
+ if(get_config_string(lookup_config(config_tree, "Broadcast"), &bmode)) {
+ if(!strcasecmp(bmode, "no"))
+ broadcast_mode = BMODE_NONE;
+ else if(!strcasecmp(bmode, "yes") || !strcasecmp(bmode, "mst"))
+ broadcast_mode = BMODE_MST;
+ else if(!strcasecmp(bmode, "direct"))
+ broadcast_mode = BMODE_DIRECT;
+ else {
+ logger(DEBUG_ALWAYS, LOG_ERR, "Invalid broadcast mode!");
+ return false;
+ }
+ free(bmode);
+ }
+
+#if !defined(SOL_IP) || !defined(IP_TOS)
+ if(priorityinheritance)
+ logger(DEBUG_ALWAYS, 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(DEBUG_ALWAYS, LOG_ERR, "Bogus maximum timeout!");
+ return false;
+ }
+ } else
+ maxtimeout = 900;
+
+ 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(DEBUG_ALWAYS, LOG_ERR, "Invalid address family!");
+ return false;
+ }
+ free(afname);
+ }
+
+ get_config_bool(lookup_config(config_tree, "Hostnames"), &hostnames);
+
+ if(!get_config_int(lookup_config(config_tree, "KeyExpire"), &keylifetime))
+ keylifetime = 3600;
+
+ get_config_int(lookup_config(config_tree, "AutoConnect"), &autoconnect);
+
+ get_config_bool(lookup_config(config_tree, "DisableBuggyPeers"), &disablebuggypeers);
+
+ read_invitation_key();
+
+ return true;