-int read_rsa_public_key(connection_t *c)
-{
- FILE *fp;
- char *fname;
- char *key;
-cp
- if(!c->rsa_key)
- c->rsa_key = RSA_new();
-
- /* First, check for simple PublicKey statement */
-
- if(get_config_string(lookup_config(c->config_tree, "PublicKey"), &key))
- {
- BN_hex2bn(&c->rsa_key->n, key);
- BN_hex2bn(&c->rsa_key->e, "FFFF");
- free(key);
- return 0;
- }
-
- /* Else, check for PublicKeyFile statement and read it */
-
- if(get_config_string(lookup_config(c->config_tree, "PublicKeyFile"), &fname))
- {
- if(is_safe_path(fname))
- {
- if((fp = fopen(fname, "r")) == NULL)
- {
- syslog(LOG_ERR, _("Error reading RSA public key file `%s': %s"),
- fname, strerror(errno));
- free(fname);
- return -1;
- }
- free(fname);
- c->rsa_key = PEM_read_RSAPublicKey(fp, &c->rsa_key, NULL, NULL);
- fclose(fp);
- if(c->rsa_key)
- return 0; /* Woohoo. */
-
- /* If it fails, try PEM_read_RSA_PUBKEY. */
- if((fp = fopen(fname, "r")) == NULL)
- {
- syslog(LOG_ERR, _("Error reading RSA public key file `%s': %s"),
- fname, strerror(errno));
- free(fname);
- return -1;
- }
- free(fname);
- c->rsa_key = PEM_read_RSA_PUBKEY(fp, &c->rsa_key, NULL, NULL);
- fclose(fp);
- if(c->rsa_key)
- return 0;
-
- syslog(LOG_ERR, _("Reading RSA public key file `%s' failed: %s"),
- fname, strerror(errno));
- return -1;
- }
- else
- {
- free(fname);
- return -1;
- }
- }
-
- /* Else, check if a harnessed public key is in the config file */
-
- asprintf(&fname, "%s/hosts/%s", confbase, c->name);
- if((fp = fopen(fname, "r")))
- {
- c->rsa_key = PEM_read_RSAPublicKey(fp, &c->rsa_key, NULL, NULL);
- fclose(fp);
- }
-
- free(fname);
-
- if(c->rsa_key)
- return 0;
-
- /* Try again with PEM_read_RSA_PUBKEY. */
-
- asprintf(&fname, "%s/hosts/%s", confbase, c->name);
- if((fp = fopen(fname, "r")))
- {
- c->rsa_key = PEM_read_RSA_PUBKEY(fp, &c->rsa_key, NULL, NULL);
- fclose(fp);
- }
-
- free(fname);
-
- if(c->rsa_key)
- return 0;
-
- syslog(LOG_ERR, _("No public key for %s specified!"), c->name);
- return -1;
+char *proxyhost;
+char *proxyport;
+char *proxyuser;
+char *proxypass;
+proxytype_t proxytype;
+int autoconnect;
+bool disablebuggypeers;
+
+bool node_read_ecdsa_public_key(node_t *n) {
+ if(ecdsa_active(n->ecdsa))
+ return true;
+
+ splay_tree_t *config_tree;
+ FILE *fp;
+ char *pubname = NULL;
+ char *p;
+
+ init_configuration(&config_tree);
+ if(!read_host_config(config_tree, n->name))
+ goto exit;
+
+ /* First, check for simple ECDSAPublicKey statement */
+
+ if(get_config_string(lookup_config(config_tree, "ECDSAPublicKey"), &p)) {
+ n->ecdsa = ecdsa_set_base64_public_key(p);
+ free(p);
+ goto exit;
+ }
+
+ /* Else, check for ECDSAPublicKeyFile statement and read it */
+
+ if(!get_config_string(lookup_config(config_tree, "ECDSAPublicKeyFile"), &pubname))
+ xasprintf(&pubname, "%s" SLASH "hosts" SLASH "%s", confbase, n->name);
+
+ fp = fopen(pubname, "r");
+
+ if(!fp)
+ goto exit;
+
+ n->ecdsa = ecdsa_read_pem_public_key(fp);
+ fclose(fp);
+
+exit:
+ exit_configuration(&config_tree);
+ free(pubname);
+ return n->ecdsa;
+}
+
+bool read_ecdsa_public_key(connection_t *c) {
+ if(ecdsa_active(c->ecdsa))
+ return true;
+
+ FILE *fp;
+ char *fname;
+ char *p;
+
+ if(!c->config_tree) {
+ init_configuration(&c->config_tree);
+ if(!read_host_config(c->config_tree, c->name))
+ return false;
+ }
+
+ /* First, check for simple ECDSAPublicKey statement */
+
+ if(get_config_string(lookup_config(c->config_tree, "ECDSAPublicKey"), &p)) {
+ c->ecdsa = ecdsa_set_base64_public_key(p);
+ free(p);
+ return c->ecdsa;
+ }
+
+ /* Else, check for ECDSAPublicKeyFile statement and read it */
+
+ if(!get_config_string(lookup_config(c->config_tree, "ECDSAPublicKeyFile"), &fname))
+ xasprintf(&fname, "%s" SLASH "hosts" SLASH "%s", confbase, c->name);
+
+ fp = fopen(fname, "r");
+
+ if(!fp) {
+ logger(DEBUG_ALWAYS, LOG_ERR, "Error reading ECDSA public key file `%s': %s",
+ fname, strerror(errno));
+ free(fname);
+ return false;
+ }
+
+ c->ecdsa = ecdsa_read_pem_public_key(fp);
+ fclose(fp);
+
+ if(!c->ecdsa)
+ logger(DEBUG_ALWAYS, LOG_ERR, "Parsing ECDSA public key file `%s' failed.", fname);
+ free(fname);
+ return c->ecdsa;
+}
+
+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 generate-ecdsa-keys'.");
+ 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 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();
+}
+
+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;
+
+ 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);
+ if(autoconnect < 0)
+ autoconnect = 0;
+
+ get_config_bool(lookup_config(config_tree, "DisableBuggyPeers"), &disablebuggypeers);
+
+ read_invitation_key();
+
+ return true;