X-Git-Url: https://tinc-vpn.org/git/browse?a=blobdiff_plain;f=src%2Fnet_setup.c;h=0085598e743f0f3259ae743b3d0f3f2c94ff64d0;hb=06943e828c45d8f4f1da6dc51907499f92957a39;hp=8ae1e72bbaafd3d90cd1118c2faa3085b36032cb;hpb=2eba7933053d7d21bf82e647978ee90abe98dc3a;p=tinc

diff --git a/src/net_setup.c b/src/net_setup.c
index 8ae1e72b..0085598e 100644
--- a/src/net_setup.c
+++ b/src/net_setup.c
@@ -38,6 +38,7 @@
 #include "protocol.h"
 #include "route.h"
 #include "rsa.h"
+#include "script.h"
 #include "subnet.h"
 #include "utils.h"
 #include "xalloc.h"
@@ -410,17 +411,18 @@ char *get_name(void) {
 
 	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;
 			}
-			char envname[32];
-			if(gethostname(envname, 32)) {
+			if(gethostname(hostname, sizeof hostname) || !*hostname) {
 				logger(DEBUG_ALWAYS, LOG_ERR, "Could not get hostname: %s\n", strerror(errno));
 				return false;
 			}
-			envname[31] = 0;
+			hostname[31] = 0;
+			envname = hostname;
 		}
 		free(name);
 		name = xstrdup(envname);
@@ -455,11 +457,7 @@ bool setup_myself_reloadable(void) {
 
 	free(scriptextension);
 	if(!get_config_string(lookup_config(config_tree, "ScriptsExtension"), &scriptextension))
-#ifdef HAVE_MINGW
-		scriptextension = xstrdup(".bat");
-#else
 		scriptextension = xstrdup("");
-#endif
 
 	get_config_string(lookup_config(config_tree, "Proxy"), &proxy);
 	if(proxy) {
@@ -635,6 +633,8 @@ bool setup_myself_reloadable(void) {
 		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);
 
@@ -649,6 +649,7 @@ bool setup_myself_reloadable(void) {
 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!");
@@ -663,9 +664,8 @@ static bool setup_myself(void) {
 
 	if(!get_config_string(lookup_config(config_tree, "Port"), &myport))
 		myport = xstrdup("655");
-
-	xasprintf(&myself->hostname, "MYSELF port %s", myport);
-	myself->connection->hostname = xstrdup(myself->hostname);
+	else
+		port_specified = true;
 
 	myself->connection->options = 0;
 	myself->connection->protocol_major = PROT_MAJOR;
@@ -681,6 +681,8 @@ static bool setup_myself(void) {
 	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;
@@ -711,7 +713,12 @@ static bool setup_myself(void) {
 	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) {
@@ -742,14 +749,15 @@ static bool setup_myself(void) {
 	if(!get_config_string(lookup_config(config_tree, "Cipher"), &cipher))
 		cipher = xstrdup("blowfish");
 
-	if(!(myself->incipher = cipher_open_by_name(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;
 	}
 
 	free(cipher);
 
-	send_key_changed();
 	timeout_add(&keyexpire_timeout, keyexpire_handler, &keyexpire_timeout, &(struct timeval){keylifetime, rand() % 100000});
 
 	/* Check if we want to use message authentication codes... */
@@ -765,7 +773,9 @@ static bool setup_myself(void) {
 	if(!get_config_string(lookup_config(config_tree, "Digest"), &digest))
 		digest = xstrdup("sha1");
 
-	if(!(myself->indigest = digest_open_by_name(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;
 	}
@@ -827,55 +837,8 @@ static bool setup_myself(void) {
 	if(device_fd >= 0)
 		io_add(&device_io, handle_device_data, NULL, device_fd, IO_READ);
 
-	/* 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);
-
 	/* Open sockets */
 
-#ifndef HAVE_MINGW
-	int unix_fd = socket(AF_UNIX, SOCK_STREAM, 0);
-	if(unix_fd < 0) {
-		logger(DEBUG_ALWAYS, LOG_ERR, "Could not create UNIX socket: %s", sockstrerror(errno));
-		return false;
-	}
-
-	struct sockaddr_un sa;
-	sa.sun_family = AF_UNIX;
-	strncpy(sa.sun_path, unixsocketname, sizeof sa.sun_path);
-
-	if(connect(unix_fd, (struct sockaddr *)&sa, sizeof sa) >= 0) {
-		logger(DEBUG_ALWAYS, LOG_ERR, "UNIX socket %s is still in use!", unixsocketname);
-		return false;
-	}
-
-	unlink(unixsocketname);
-
-	if(bind(unix_fd, (struct sockaddr *)&sa, sizeof sa) < 0) {
-		logger(DEBUG_ALWAYS, LOG_ERR, "Could not bind UNIX socket to %s: %s", unixsocketname, sockstrerror(errno));
-		return false;
-	}
-
-	if(listen(unix_fd, 3) < 0) {
-		logger(DEBUG_ALWAYS, LOG_ERR, "Could not listen on UNIX socket %s: %s", unixsocketname, sockstrerror(errno));
-		return false;
-	}
-
-	io_add(&unix_socket, handle_new_unix_connection, &unix_socket, unix_fd, IO_READ);
-#endif
-
 	if(!do_detach && getenv("LISTEN_FDS")) {
 		sockaddr_t sa;
 		socklen_t salen;
@@ -987,13 +950,29 @@ 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;
@@ -1027,6 +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;
 }
 
@@ -1059,11 +1058,6 @@ void close_network_connections(void) {
 		close(listen_socket[i].udp.fd);
 	}
 
-#ifndef HAVE_MINGW
-	io_del(&unix_socket);
-	close(unix_socket.fd);
-#endif
-
 	char *envp[5] = {NULL};
 	xasprintf(&envp[0], "NETNAME=%s", netname ? : "");
 	xasprintf(&envp[1], "DEVICE=%s", device ? : "");
@@ -1085,5 +1079,7 @@ void close_network_connections(void) {
 
 	devops.close();
 
+	exit_control();
+
 	return;
 }