X-Git-Url: https://tinc-vpn.org/git/browse?p=tinc;a=blobdiff_plain;f=src%2Fnet_setup.c;h=0085598e743f0f3259ae743b3d0f3f2c94ff64d0;hp=0d21cc059cfd1669a4d5bc1e656a97bf3d352800;hb=06943e828c45d8f4f1da6dc51907499f92957a39;hpb=1d9dacb1f26971e19463b5501c2410c57f780ecb

diff --git a/src/net_setup.c b/src/net_setup.c
index 0d21cc05..0085598e 100644
--- a/src/net_setup.c
+++ b/src/net_setup.c
@@ -1,7 +1,7 @@
 /*
     net_setup.c -- Setup.
     Copyright (C) 1998-2005 Ivo Timmermans,
-                  2000-2012 Guus Sliepen <guus@tinc-vpn.org>
+                  2000-2013 Guus Sliepen <guus@tinc-vpn.org>
                   2006      Scott Lamb <slamb@slamb.org>
                   2010      Brandon Black <blblack@gmail.com>
 
@@ -22,7 +22,6 @@
 
 #include "system.h"
 
-#include "splay_tree.h"
 #include "cipher.h"
 #include "conf.h"
 #include "connection.h"
@@ -32,85 +31,101 @@
 #include "ecdsa.h"
 #include "graph.h"
 #include "logger.h"
+#include "names.h"
 #include "net.h"
 #include "netutl.h"
 #include "process.h"
 #include "protocol.h"
 #include "route.h"
 #include "rsa.h"
+#include "script.h"
 #include "subnet.h"
 #include "utils.h"
 #include "xalloc.h"
 
 char *myport;
-static struct event device_ev;
+static io_t device_io;
 devops_t devops;
 
+char *proxyhost;
+char *proxyport;
+char *proxyuser;
+char *proxypass;
+proxytype_t proxytype;
+int autoconnect;
+bool disablebuggypeers;
+
+char *scriptinterpreter;
+char *scriptextension;
+
 bool node_read_ecdsa_public_key(node_t *n) {
-	if(ecdsa_active(&n->ecdsa))
+	if(ecdsa_active(n->ecdsa))
 		return true;
 
 	splay_tree_t *config_tree;
 	FILE *fp;
-	char *fname;
+	char *pubname = NULL;
 	char *p;
-	bool result = false;
-
-	xasprintf(&fname, "%s/hosts/%s", confbase, n->name);
 
 	init_configuration(&config_tree);
-	if(!read_config_file(config_tree, fname))
+	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)) {
-		result = ecdsa_set_base64_public_key(&n->ecdsa, p);
+		n->ecdsa = ecdsa_set_base64_public_key(p);
 		free(p);
 		goto exit;
 	}
 
 	/* Else, check for ECDSAPublicKeyFile statement and read it */
 
-	free(fname);
+	if(!get_config_string(lookup_config(config_tree, "ECDSAPublicKeyFile"), &pubname))
+		xasprintf(&pubname, "%s" SLASH "hosts" SLASH "%s", confbase, n->name);
 
-	if(!get_config_string(lookup_config(config_tree, "ECDSAPublicKeyFile"), &fname))
-		xasprintf(&fname, "%s/hosts/%s", confbase, n->name);
-
-	fp = fopen(fname, "r");
+	fp = fopen(pubname, "r");
 
 	if(!fp) {
-		logger(DEBUG_ALWAYS, LOG_ERR, "Error reading ECDSA public key file `%s': %s", fname, strerror(errno));
+		logger(DEBUG_ALWAYS, LOG_ERR, "Error reading ECDSA public key file `%s': %s", pubname, strerror(errno));
 		goto exit;
 	}
 
-	result = ecdsa_read_pem_public_key(&n->ecdsa, fp);
+	n->ecdsa = ecdsa_read_pem_public_key(fp);
 	fclose(fp);
 
 exit:
 	exit_configuration(&config_tree);
-	free(fname);
-	return result;
+	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;
-	bool result;
+
+	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)) {
-		result = ecdsa_set_base64_public_key(&c->ecdsa, p);
+		c->ecdsa = ecdsa_set_base64_public_key(p);
 		free(p);
-		return result;
+		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/hosts/%s", confbase, c->name);
+		xasprintf(&fname, "%s" SLASH "hosts" SLASH "%s", confbase, c->name);
 
 	fp = fopen(fname, "r");
 
@@ -121,33 +136,35 @@ bool read_ecdsa_public_key(connection_t *c) {
 		return false;
 	}
 
-	result = ecdsa_read_pem_public_key(&c->ecdsa, fp);
+	c->ecdsa = ecdsa_read_pem_public_key(fp);
 	fclose(fp);
 
-	if(!result) 
-		logger(DEBUG_ALWAYS, LOG_ERR, "Reading ECDSA public key file `%s' failed: %s", fname, strerror(errno));
+	if(!c->ecdsa)
+		logger(DEBUG_ALWAYS, LOG_ERR, "Parsing ECDSA public key file `%s' failed.", fname);
 	free(fname);
-	return result;
+	return c->ecdsa;
 }
 
 bool read_rsa_public_key(connection_t *c) {
+	if(ecdsa_active(c->ecdsa))
+		return true;
+
 	FILE *fp;
 	char *fname;
 	char *n;
-	bool result;
 
 	/* First, check for simple PublicKey statement */
 
 	if(get_config_string(lookup_config(c->config_tree, "PublicKey"), &n)) {
-		result = rsa_set_hex_public_key(&c->rsa, n, "FFFF");
+		c->rsa = rsa_set_hex_public_key(n, "FFFF");
 		free(n);
-		return result;
+		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/hosts/%s", confbase, c->name);
+		xasprintf(&fname, "%s" SLASH "hosts" SLASH "%s", confbase, c->name);
 
 	fp = fopen(fname, "r");
 
@@ -157,29 +174,30 @@ bool read_rsa_public_key(connection_t *c) {
 		return false;
 	}
 
-	result = rsa_read_pem_public_key(&c->rsa, fp);
+	c->rsa = rsa_read_pem_public_key(fp);
 	fclose(fp);
 
-	if(!result) 
+	if(!c->rsa)
 		logger(DEBUG_ALWAYS, LOG_ERR, "Reading RSA public key file `%s' failed: %s", fname, strerror(errno));
 	free(fname);
-	return result;
+	return c->rsa;
 }
 
 static bool read_ecdsa_private_key(void) {
 	FILE *fp;
 	char *fname;
-	bool result;
 
 	/* Check for PrivateKeyFile statement and read it */
 
 	if(!get_config_string(lookup_config(config_tree, "ECDSAPrivateKeyFile"), &fname))
-		xasprintf(&fname, "%s/ecdsa_key.priv", confbase);
+		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;
 	}
@@ -197,20 +215,43 @@ static bool read_ecdsa_private_key(void) {
 		logger(DEBUG_ALWAYS, LOG_WARNING, "Warning: insecure file permissions for ECDSA private key file `%s'!", fname);
 #endif
 
-	result = ecdsa_read_pem_private_key(&myself->connection->ecdsa, fp);
+	myself->connection->ecdsa = ecdsa_read_pem_private_key(fp);
 	fclose(fp);
 
-	if(!result) 
+	if(!myself->connection->ecdsa)
 		logger(DEBUG_ALWAYS, LOG_ERR, "Reading ECDSA private key file `%s' failed: %s", fname, strerror(errno));
 	free(fname);
-	return result;
+	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;
-	bool result;
 
 	/* First, check for simple PrivateKey statement */
 
@@ -220,16 +261,16 @@ static bool read_rsa_private_key(void) {
 			free(d);
 			return false;
 		}
-		result = rsa_set_hex_private_key(&myself->connection->rsa, n, "FFFF", d);
+		myself->connection->rsa = rsa_set_hex_private_key(n, "FFFF", d);
 		free(n);
 		free(d);
-		return true;
+		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/rsa_key.priv", confbase);
+		xasprintf(&fname, "%s" SLASH "rsa_key.priv", confbase);
 
 	fp = fopen(fname, "r");
 
@@ -253,31 +294,25 @@ static bool read_rsa_private_key(void) {
 		logger(DEBUG_ALWAYS, LOG_WARNING, "Warning: insecure file permissions for RSA private key file `%s'!", fname);
 #endif
 
-	result = rsa_read_pem_private_key(&myself->connection->rsa, fp);
+	myself->connection->rsa = rsa_read_pem_private_key(fp);
 	fclose(fp);
 
-	if(!result) 
+	if(!myself->connection->rsa)
 		logger(DEBUG_ALWAYS, LOG_ERR, "Reading RSA private key file `%s' failed: %s", fname, strerror(errno));
 	free(fname);
-	return result;
+	return myself->connection->rsa;
 }
 
-static struct event keyexpire_event;
+static timeout_t keyexpire_timeout;
 
-static void keyexpire_handler(int fd, short events, void *data) {
+static void keyexpire_handler(void *data) {
 	regenerate_key();
+	timeout_set(data, &(struct timeval){keylifetime, rand() % 100000});
 }
 
 void regenerate_key(void) {
-	if(timeout_initialized(&keyexpire_event)) {
-		logger(DEBUG_STATUS, LOG_INFO, "Expiring symmetric keys");
-		event_del(&keyexpire_event);
-		send_key_changed();
-	} else {
-		timeout_set(&keyexpire_event, keyexpire_handler, NULL);
-	}
-
-	event_add(&keyexpire_event, &(struct timeval){keylifetime, 0});
+	logger(DEBUG_STATUS, LOG_INFO, "Expiring symmetric keys");
+	send_key_changed();
 }
 
 /*
@@ -287,13 +322,8 @@ void load_all_subnets(void) {
 	DIR *dir;
 	struct dirent *ent;
 	char *dname;
-	char *fname;
-	splay_tree_t *config_tree;
-	config_t *cfg;
-	subnet_t *s, *s2;
-	node_t *n;
 
-	xasprintf(&dname, "%s/hosts", confbase);
+	xasprintf(&dname, "%s" SLASH "hosts", confbase);
 	dir = opendir(dname);
 	if(!dir) {
 		logger(DEBUG_ALWAYS, LOG_ERR, "Could not open %s: %s", dname, strerror(errno));
@@ -305,17 +335,16 @@ void load_all_subnets(void) {
 		if(!check_id(ent->d_name))
 			continue;
 
-		n = lookup_node(ent->d_name);
+		node_t *n = lookup_node(ent->d_name);
 		#ifdef _DIRENT_HAVE_D_TYPE
 		//if(ent->d_type != DT_REG)
 		//	continue;
 		#endif
 
-		xasprintf(&fname, "%s/hosts/%s", confbase, ent->d_name);
+		splay_tree_t *config_tree;
 		init_configuration(&config_tree);
 		read_config_options(config_tree, ent->d_name);
-		read_config_file(config_tree, fname);
-		free(fname);
+		read_host_config(config_tree, ent->d_name);
 
 		if(!n) {
 			n = new_node();
@@ -323,7 +352,9 @@ void load_all_subnets(void) {
 			node_add(n);
 		}
 
-		for(cfg = lookup_config(config_tree, "Subnet"); cfg; cfg = lookup_config_next(config_tree, cfg)) {
+		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;
 
@@ -340,84 +371,155 @@ void load_all_subnets(void) {
 	closedir(dir);
 }
 
-/*
-  Configure node_t myself and set up the local sockets (listen only)
-*/
-static bool setup_myself(void) {
-	config_t *cfg;
-	subnet_t *subnet;
-	char *name, *hostname, *mode, *afname, *cipher, *digest, *type;
-	char *fname = NULL;
-	char *address = NULL;
-	char *envp[5];
-	struct addrinfo *ai, *aip, hint = {0};
-	bool choice;
-	int i, err;
-	int replaywin_int;
+void load_all_nodes(void) {
+	DIR *dir;
+	struct dirent *ent;
+	char *dname;
 
-	myself = new_node();
-	myself->connection = new_connection();
+	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;
+	}
 
-	myself->hostname = xstrdup("MYSELF");
-	myself->connection->hostname = xstrdup("MYSELF");
+	while((ent = readdir(dir))) {
+		if(!check_id(ent->d_name))
+			continue;
 
-	myself->connection->options = 0;
-	myself->connection->protocol_major = PROT_MAJOR;
-	myself->connection->protocol_minor = PROT_MINOR;
+		node_t *n = lookup_node(ent->d_name);
+		if(n)
+			continue;
 
-	if(!get_config_string(lookup_config(config_tree, "Name"), &name)) {	/* Not acceptable */
-		logger(DEBUG_ALWAYS, LOG_ERR, "Name for tinc daemon required!");
-		return false;
+		n = new_node();
+		n->name = xstrdup(ent->d_name);
+		node_add(n);
 	}
 
-	if(!check_id(name)) {
-		logger(DEBUG_ALWAYS, LOG_ERR, "Invalid name for myself!");
-		free(name);
-		return false;
-	}
+	closedir(dir);
+}
 
-	myself->name = name;
-	myself->connection->name = xstrdup(name);
-	xasprintf(&fname, "%s/hosts/%s", confbase, name);
-	read_config_options(config_tree, name);
-	read_config_file(config_tree, fname);
-	free(fname);
 
-	get_config_bool(lookup_config(config_tree, "ExperimentalProtocol"), &experimental);
+char *get_name(void) {
+	char *name = NULL;
 
-	if(experimental && !read_ecdsa_private_key())
-		return false;
+	get_config_string(lookup_config(config_tree, "Name"), &name);
 
-	if(!read_rsa_private_key())
-		return false;
+	if(!name)
+		return NULL;
 
-	if(!get_config_string(lookup_config(config_tree, "Port"), &myport))
-		myport = xstrdup("655");
+	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(!atoi(myport)) {
-		struct addrinfo *ai = str2addrinfo("localhost", myport, SOCK_DGRAM);
-		sockaddr_t sa;
-		if(!ai || !ai->ai_addr)
-			return false;
-		free(myport);
-		memcpy(&sa, ai->ai_addr, ai->ai_addrlen);
-		sockaddr2str(&sa, NULL, &myport);
+	if(!check_id(name)) {
+		logger(DEBUG_ALWAYS, LOG_ERR, "Invalid name for myself!");
+		free(name);
+		return false;
 	}
 
-	/* Read in all the subnets specified in the host configuration file */
+	return name;
+}
 
-	cfg = lookup_config(config_tree, "Subnet");
+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;
 
-	while(cfg) {
-		if(!get_config_subnet(cfg, &subnet))
+	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;
+		}
 
-		subnet_add(myself, subnet);
+		switch(proxytype) {
+			case PROXY_NONE:
+			default:
+				break;
 
-		cfg = lookup_config_next(config_tree, cfg);
-	}
+			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;
+		}
 
-	/* Check some options */
+		free(proxy);
+	}
 
 	if(get_config_bool(lookup_config(config_tree, "IndirectData"), &choice) && choice)
 		myself->options |= OPTION_INDIRECT;
@@ -429,37 +531,44 @@ static bool setup_myself(void) {
 		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"))
+	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(mode, "switch"))
+		else if(!strcasecmp(rmode, "switch"))
 			routing_mode = RMODE_SWITCH;
-		else if(!strcasecmp(mode, "hub"))
+		else if(!strcasecmp(rmode, "hub"))
 			routing_mode = RMODE_HUB;
 		else {
 			logger(DEBUG_ALWAYS, LOG_ERR, "Invalid routing mode!");
 			return false;
 		}
-		free(mode);
+		free(rmode);
 	}
 
-	if(get_config_string(lookup_config(config_tree, "Forwarding"), &mode)) {
-		if(!strcasecmp(mode, "off"))
+	if(get_config_string(lookup_config(config_tree, "Forwarding"), &fmode)) {
+		if(!strcasecmp(fmode, "off"))
 			forwarding_mode = FMODE_OFF;
-		else if(!strcasecmp(mode, "internal"))
+		else if(!strcasecmp(fmode, "internal"))
 			forwarding_mode = FMODE_INTERNAL;
-		else if(!strcasecmp(mode, "kernel"))
+		else if(!strcasecmp(fmode, "kernel"))
 			forwarding_mode = FMODE_KERNEL;
 		else {
 			logger(DEBUG_ALWAYS, LOG_ERR, "Invalid forwarding mode!");
 			return false;
 		}
-		free(mode);
+		free(fmode);
 	}
 
 	choice = true;
@@ -474,7 +583,19 @@ static bool setup_myself(void) {
 
 	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(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)
@@ -492,6 +613,113 @@ static bool setup_myself(void) {
 	} 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;
+}
+
+/*
+  Configure node_t myself and set up the local sockets (listen only)
+*/
+static bool setup_myself(void) {
+	char *name, *hostname, *cipher, *digest, *type;
+	char *address = NULL;
+	bool port_specified = false;
+
+	if(!(name = get_name())) {
+		logger(DEBUG_ALWAYS, LOG_ERR, "Name for tinc daemon required!");
+		return false;
+	}
+
+	myself = new_node();
+	myself->connection = new_connection();
+	myself->name = name;
+	myself->connection->name = xstrdup(name);
+	read_host_config(config_tree, name);
+
+	if(!get_config_string(lookup_config(config_tree, "Port"), &myport))
+		myport = xstrdup("655");
+	else
+		port_specified = true;
+
+	myself->connection->options = 0;
+	myself->connection->protocol_major = PROT_MAJOR;
+	myself->connection->protocol_minor = PROT_MINOR;
+
+	myself->options |= PROT_MINOR << 24;
+
+	get_config_bool(lookup_config(config_tree, "ExperimentalProtocol"), &experimental);
+
+	if(experimental && !read_ecdsa_private_key())
+		return false;
+
+	if(!read_rsa_private_key())
+		return false;
+
+	/* Ensure myport is numeric */
+
+	if(!atoi(myport)) {
+		struct addrinfo *ai = str2addrinfo("localhost", myport, SOCK_DGRAM);
+		sockaddr_t sa;
+		if(!ai || !ai->ai_addr)
+			return false;
+		free(myport);
+		memcpy(&sa, ai->ai_addr, ai->ai_addrlen);
+		sockaddr2str(&sa, NULL, &myport);
+	}
+
+	/* Read in all the subnets specified in the host configuration file */
+
+	for(config_t *cfg = lookup_config(config_tree, "Subnet"); cfg; cfg = lookup_config_next(config_tree, cfg)) {
+		subnet_t *subnet;
+
+		if(!get_config_subnet(cfg, &subnet))
+			return false;
+
+		subnet_add(myself, subnet);
+	}
+
+	/* Check some options */
+
+	if(!setup_myself_reloadable())
+		return false;
+
+	get_config_bool(lookup_config(config_tree, "StrictSubnets"), &strictsubnets);
+	get_config_bool(lookup_config(config_tree, "TunnelServer"), &tunnelserver);
+	strictsubnets |= tunnelserver;
+
+	if(get_config_int(lookup_config(config_tree, "MaxConnectionBurst"), &max_connection_burst)) {
+		if(max_connection_burst <= 0) {
+			logger(DEBUG_ALWAYS, LOG_ERR, "MaxConnectionBurst cannot be negative!");
+			return false;
+		}
+	}
+
 	if(get_config_int(lookup_config(config_tree, "UDPRcvBuf"), &udp_rcvbuf)) {
 		if(udp_rcvbuf <= 0) {
 			logger(DEBUG_ALWAYS, LOG_ERR, "UDPRcvBuf cannot be negative!");
@@ -506,44 +734,31 @@ static bool setup_myself(void) {
 		}
 	}
 
+	int replaywin_int;
 	if(get_config_int(lookup_config(config_tree, "ReplayWindow"), &replaywin_int)) {
 		if(replaywin_int < 0) {
 			logger(DEBUG_ALWAYS, LOG_ERR, "ReplayWindow cannot be negative!");
 			return false;
 		}
 		replaywin = (unsigned)replaywin_int;
+		sptps_replaywin = replaywin;
 	}
 
-	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);
-
 	/* Generate packet encryption key */
 
 	if(!get_config_string(lookup_config(config_tree, "Cipher"), &cipher))
 		cipher = xstrdup("blowfish");
 
-	if(!cipher_open_by_name(&myself->incipher, cipher)) {
+	if(!strcasecmp(cipher, "none")) {
+		myself->incipher = NULL;
+	} else if(!(myself->incipher = cipher_open_by_name(cipher))) {
 		logger(DEBUG_ALWAYS, LOG_ERR, "Unrecognized cipher type!");
 		return false;
 	}
 
-	if(!get_config_int(lookup_config(config_tree, "KeyExpire"), &keylifetime))
-		keylifetime = 3600;
+	free(cipher);
 
-	regenerate_key();
+	timeout_add(&keyexpire_timeout, keyexpire_handler, &keyexpire_timeout, &(struct timeval){keylifetime, rand() % 100000});
 
 	/* Check if we want to use message authentication codes... */
 
@@ -558,11 +773,15 @@ static bool setup_myself(void) {
 	if(!get_config_string(lookup_config(config_tree, "Digest"), &digest))
 		digest = xstrdup("sha1");
 
-	if(!digest_open_by_name(&myself->indigest, digest, maclength)) {
+	if(!strcasecmp(digest, "none")) {
+		myself->indigest = NULL;
+	} else if(!(myself->indigest = digest_open_by_name(digest, maclength))) {
 		logger(DEBUG_ALWAYS, LOG_ERR, "Unrecognized digest type!");
 		return false;
 	}
 
+	free(digest);
+
 	/* Compression */
 
 	if(get_config_int(lookup_config(config_tree, "Compression"), &myself->incompression)) {
@@ -580,12 +799,16 @@ static bool setup_myself(void) {
 	myself->nexthop = myself;
 	myself->via = myself;
 	myself->status.reachable = true;
+	myself->last_state_change = now.tv_sec;
+	myself->status.sptps = experimental;
 	node_add(myself);
 
 	graph();
 
 	if(strictsubnets)
 		load_all_subnets();
+	else if(autoconnect)
+		load_all_nodes();
 
 	/* Open device */
 
@@ -611,31 +834,8 @@ static bool setup_myself(void) {
 	if(!devops.setup())
 		return false;
 
-	if(device_fd >= 0) {
-		event_set(&device_ev, device_fd, EV_READ|EV_PERSIST, handle_device_data, NULL);
-
-		if (event_add(&device_ev, NULL) < 0) {
-			logger(DEBUG_ALWAYS, LOG_ERR, "event_add failed: %s", strerror(errno));
-			devops.close();
-			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 < 4; i++)
-		free(envp[i]);
-
-	/* Run subnet-up scripts for our own subnets */
-
-	subnet_update(myself, NULL, true);
+	if(device_fd >= 0)
+		io_add(&device_io, handle_device_data, NULL, device_fd, IO_READ);
 
 	/* Open sockets */
 
@@ -653,34 +853,23 @@ static bool setup_myself(void) {
 			return false;
 		}
 
-		for(i = 0; i < listen_sockets; i++) {
+		for(int i = 0; i < listen_sockets; i++) {
 			salen = sizeof sa;
 			if(getsockname(i + 3, &sa.sa, &salen) < 0) {
 				logger(DEBUG_ALWAYS, LOG_ERR, "Could not get address of listen fd %d: %s", i + 3, sockstrerror(errno));
 				return false;
 			}
 
-			listen_socket[i].tcp = i + 3;
-
 #ifdef FD_CLOEXEC
-		        fcntl(i + 3, F_SETFD, FD_CLOEXEC);
+			fcntl(i + 3, F_SETFD, FD_CLOEXEC);
 #endif
 
-			listen_socket[i].udp = setup_vpn_in_socket(&sa);
-			if(listen_socket[i].udp < 0)
+			int udp_fd = setup_vpn_in_socket(&sa);
+			if(udp_fd < 0)
 				return false;
 
-			event_set(&listen_socket[i].ev_tcp, listen_socket[i].tcp, EV_READ|EV_PERSIST, handle_new_meta_connection, NULL);
-			if(event_add(&listen_socket[i].ev_tcp, NULL) < 0) {
-				logger(DEBUG_ALWAYS, LOG_ERR, "event_add failed: %s", strerror(errno));
-				abort();
-			}
-
-			event_set(&listen_socket[i].ev_udp, listen_socket[i].udp, EV_READ|EV_PERSIST, handle_incoming_vpn_data, (void *)(intptr_t)listen_sockets);
-			if(event_add(&listen_socket[listen_sockets].ev_udp, NULL) < 0) {
-				logger(DEBUG_ALWAYS, LOG_ERR, "event_add failed: %s", strerror(errno));
-				abort();
-			}
+			io_add(&listen_socket[i].tcp, (io_cb_t)handle_new_meta_connection, &listen_socket[i], i + 3, IO_READ);
+			io_add(&listen_socket[i].udp, (io_cb_t)handle_incoming_vpn_data, &listen_socket[i], udp_fd, IO_READ);
 
 			if(debug_level >= DEBUG_CONNECTIONS) {
 				hostname = sockaddr2hostname(&sa);
@@ -692,7 +881,7 @@ static bool setup_myself(void) {
 		}
 	} else {
 		listen_sockets = 0;
-		cfg = lookup_config(config_tree, "BindToAddress");
+		config_t *cfg = lookup_config(config_tree, "BindToAddress");
 
 		do {
 			get_config_string(cfg, &address);
@@ -712,57 +901,40 @@ static bool setup_myself(void) {
 					*address = 0;
 			}
 
+			struct addrinfo *ai, hint = {0};
 			hint.ai_family = addressfamily;
 			hint.ai_socktype = SOCK_STREAM;
 			hint.ai_protocol = IPPROTO_TCP;
 			hint.ai_flags = AI_PASSIVE;
 
-			err = getaddrinfo(address && *address ? address : NULL, port, &hint, &ai);
+			int err = getaddrinfo(address && *address ? address : NULL, port, &hint, &ai);
 			free(address);
 
 			if(err || !ai) {
-				logger(DEBUG_ALWAYS, LOG_ERR, "System call `%s' failed: %s", "getaddrinfo",
-					   gai_strerror(err));
+				logger(DEBUG_ALWAYS, LOG_ERR, "System call `%s' failed: %s", "getaddrinfo", err == EAI_SYSTEM ? strerror(err) : gai_strerror(err));
 				return false;
 			}
 
-			for(aip = ai; aip; aip = aip->ai_next) {
+			for(struct addrinfo *aip = ai; aip; aip = aip->ai_next) {
 				if(listen_sockets >= MAXSOCKETS) {
 					logger(DEBUG_ALWAYS, LOG_ERR, "Too many listening sockets");
 					return false;
 				}
 
-				listen_socket[listen_sockets].tcp =
-					setup_listen_socket((sockaddr_t *) aip->ai_addr);
+				int tcp_fd = setup_listen_socket((sockaddr_t *) aip->ai_addr);
 
-				if(listen_socket[listen_sockets].tcp < 0)
+				if(tcp_fd < 0)
 					continue;
 
-				listen_socket[listen_sockets].udp =
-					setup_vpn_in_socket((sockaddr_t *) aip->ai_addr);
+				int udp_fd = setup_vpn_in_socket((sockaddr_t *) aip->ai_addr);
 
-				if(listen_socket[listen_sockets].udp < 0) {
-					close(listen_socket[listen_sockets].tcp);
+				if(tcp_fd < 0) {
+					close(tcp_fd);
 					continue;
 				}
 
-				event_set(&listen_socket[listen_sockets].ev_tcp,
-						  listen_socket[listen_sockets].tcp,
-						  EV_READ|EV_PERSIST,
-						  handle_new_meta_connection, NULL);
-				if(event_add(&listen_socket[listen_sockets].ev_tcp, NULL) < 0) {
-					logger(DEBUG_ALWAYS, LOG_ERR, "event_add failed: %s", strerror(errno));
-					abort();
-				}
-
-				event_set(&listen_socket[listen_sockets].ev_udp,
-						  listen_socket[listen_sockets].udp,
-						  EV_READ|EV_PERSIST,
-						  handle_incoming_vpn_data, (void *)(intptr_t)listen_sockets);
-				if(event_add(&listen_socket[listen_sockets].ev_udp, NULL) < 0) {
-					logger(DEBUG_ALWAYS, LOG_ERR, "event_add failed: %s", strerror(errno));
-					abort();
-				}
+				io_add(&listen_socket[listen_sockets].tcp, handle_new_meta_connection, &listen_socket[listen_sockets], tcp_fd, IO_READ);
+				io_add(&listen_socket[listen_sockets].udp, handle_incoming_vpn_data, &listen_socket[listen_sockets], udp_fd, IO_READ);
 
 				if(debug_level >= DEBUG_CONNECTIONS) {
 					hostname = sockaddr2hostname((sockaddr_t *) aip->ai_addr);
@@ -778,13 +950,31 @@ static bool setup_myself(void) {
 		} while(cfg);
 	}
 
-	if(listen_sockets)
-		logger(DEBUG_ALWAYS, LOG_NOTICE, "Ready");
-	else {
+	if(!listen_sockets) {
 		logger(DEBUG_ALWAYS, LOG_ERR, "Unable to create any listening socket!");
 		return false;
 	}
 
+	/* If no Port option was specified, set myport to the port used by the first listening socket. */
+
+	if(!port_specified) {
+		sockaddr_t sa;
+		socklen_t salen = sizeof sa;
+		if(!getsockname(listen_socket[0].udp.fd, &sa.sa, &salen)) {
+			free(myport);
+			sockaddr2str(&sa, NULL, &myport);
+			if(!myport)
+				myport = xstrdup("655");
+		}
+	}
+
+	xasprintf(&myself->hostname, "MYSELF port %s", myport);
+	myself->connection->hostname = xstrdup(myself->hostname);
+
+	/* Done. */
+
+	last_config_check = now.tv_sec;
+
 	return true;
 }
 
@@ -816,6 +1006,26 @@ bool setup_network(void) {
 	if(!setup_myself())
 		return false;
 
+	if(!init_control())
+		return false;
+
+	/* Run tinc-up script to further initialize the tap interface */
+
+	char *envp[5] = {NULL};
+	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);
+
+	execute_script("tinc-up", envp);
+
+	for(int i = 0; i < 4; i++)
+		free(envp[i]);
+
+	/* Run subnet-up scripts for our own subnets */
+
+	subnet_update(myself, NULL, true);
+
 	return true;
 }
 
@@ -823,14 +1033,12 @@ bool setup_network(void) {
   close all open network connections
 */
 void close_network_connections(void) {
-	splay_node_t *node, *next;
-	connection_t *c;
-	char *envp[5];
-	int i;
-
-	for(node = connection_tree->head; node; node = next) {
+	for(list_node_t *node = connection_list->head, *next; node; node = next) {
 		next = node->next;
-		c = node->data;
+		connection_t *c = node->data;
+		/* Keep control connections open until the end, so they know when we really terminated */
+		if(c->status.control)
+			c->socket = -1;
 		c->outgoing = NULL;
 		terminate_connection(c, false);
 	}
@@ -843,18 +1051,18 @@ void close_network_connections(void) {
 		free_connection(myself->connection);
 	}
 
-	for(i = 0; i < listen_sockets; i++) {
-		event_del(&listen_socket[i].ev_tcp);
-		event_del(&listen_socket[i].ev_udp);
-		close(listen_socket[i].tcp);
-		close(listen_socket[i].udp);
+	for(int i = 0; i < listen_sockets; i++) {
+		io_del(&listen_socket[i].tcp);
+		io_del(&listen_socket[i].udp);
+		close(listen_socket[i].tcp.fd);
+		close(listen_socket[i].udp.fd);
 	}
 
+	char *envp[5] = {NULL};
 	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;
 
 	exit_requests();
 	exit_edges();
@@ -866,10 +1074,12 @@ void close_network_connections(void) {
 
 	if(myport) free(myport);
 
-	for(i = 0; i < 4; i++)
+	for(int i = 0; i < 4; i++)
 		free(envp[i]);
 
 	devops.close();
 
+	exit_control();
+
 	return;
 }