X-Git-Url: https://tinc-vpn.org/git/browse?a=blobdiff_plain;f=src%2Fnet_socket.c;h=44b7ec7829d58f8b139f02d089607caa362468f0;hb=636200d1a2024982fe5b3062153daa72a8253015;hp=c727d7b2086da9a12aebba6df2651cab5281164a;hpb=38c25d62c2bc76908bd95fb21c8f5e39ad269884;p=tinc

diff --git a/src/net_socket.c b/src/net_socket.c
index c727d7b2..44b7ec78 100644
--- a/src/net_socket.c
+++ b/src/net_socket.c
@@ -1,7 +1,7 @@
 /*
     net_socket.c -- Handle various kinds of sockets.
     Copyright (C) 1998-2005 Ivo Timmermans,
-                  2000-2006 Guus Sliepen <guus@tinc-vpn.org>
+                  2000-2007 Guus Sliepen <guus@tinc-vpn.org>
 
     This program is free software; you can redistribute it and/or modify
     it under the terms of the GNU General Public License as published by
@@ -22,10 +22,9 @@
 
 #include "system.h"
 
-#include "avl_tree.h"
+#include "splay_tree.h"
 #include "conf.h"
 #include "connection.h"
-#include "tevent.h"
 #include "logger.h"
 #include "meta.h"
 #include "net.h"
@@ -52,8 +51,7 @@ int listen_sockets;
 
 /* Setup sockets */
 
-static void configure_tcp(connection_t *c)
-{
+static void configure_tcp(connection_t *c) {
 	int option;
 
 #ifdef O_NONBLOCK
@@ -62,21 +60,26 @@ static void configure_tcp(connection_t *c)
 	if(fcntl(c->socket, F_SETFL, flags | O_NONBLOCK) < 0) {
 		logger(LOG_ERR, _("fcntl for %s: %s"), c->hostname, strerror(errno));
 	}
+#elif defined(WIN32)
+	unsigned long arg = 1;
+
+	if(ioctlsocket(c->socket, FIONBIO, &arg) != 0) {
+		logger(LOG_ERR, _("ioctlsocket for %s: WSA error %d"), c->hostname, WSAGetLastError());
+	}
 #endif
 
 #if defined(SOL_TCP) && defined(TCP_NODELAY)
 	option = 1;
-	setsockopt(c->socket, SOL_TCP, TCP_NODELAY, &option, sizeof(option));
+	setsockopt(c->socket, SOL_TCP, TCP_NODELAY, &option, sizeof option);
 #endif
 
 #if defined(SOL_IP) && defined(IP_TOS) && defined(IPTOS_LOWDELAY)
 	option = IPTOS_LOWDELAY;
-	setsockopt(c->socket, SOL_IP, IP_TOS, &option, sizeof(option));
+	setsockopt(c->socket, SOL_IP, IP_TOS, &option, sizeof option);
 #endif
 }
 
-int setup_listen_socket(const sockaddr_t *sa)
-{
+int setup_listen_socket(const sockaddr_t *sa) {
 	int nfd;
 	char *addrstr;
 	int option;
@@ -94,17 +97,17 @@ int setup_listen_socket(const sockaddr_t *sa)
 	/* Optimize TCP settings */
 
 	option = 1;
-	setsockopt(nfd, SOL_SOCKET, SO_REUSEADDR, &option, sizeof(option));
+	setsockopt(nfd, SOL_SOCKET, SO_REUSEADDR, &option, sizeof option);
 
 	if(get_config_string
 	   (lookup_config(config_tree, "BindToInterface"), &iface)) {
 #if defined(SOL_SOCKET) && defined(SO_BINDTODEVICE)
 		struct ifreq ifr;
 
-		memset(&ifr, 0, sizeof(ifr));
+		memset(&ifr, 0, sizeof ifr);
 		strncpy(ifr.ifr_ifrn.ifrn_name, iface, IFNAMSIZ);
 
-		if(setsockopt(nfd, SOL_SOCKET, SO_BINDTODEVICE, &ifr, sizeof(ifr))) {
+		if(setsockopt(nfd, SOL_SOCKET, SO_BINDTODEVICE, &ifr, sizeof ifr)) {
 			closesocket(nfd);
 			logger(LOG_ERR, _("Can't bind to interface %s: %s"), iface,
 				   strerror(errno));
@@ -134,8 +137,7 @@ int setup_listen_socket(const sockaddr_t *sa)
 	return nfd;
 }
 
-int setup_vpn_in_socket(const sockaddr_t *sa)
-{
+int setup_vpn_in_socket(const sockaddr_t *sa) {
 	int nfd;
 	char *addrstr;
 	int option;
@@ -160,10 +162,20 @@ int setup_vpn_in_socket(const sockaddr_t *sa)
 			return -1;
 		}
 	}
+#elif defined(WIN32)
+	{
+		unsigned long arg = 1;
+		if(ioctlsocket(nfd, FIONBIO, &arg) != 0) {
+			closesocket(nfd);
+			logger(LOG_ERR, _("Call to `%s' failed: WSA error %d"), "ioctlsocket",
+				WSAGetLastError());
+			return -1;
+		}
+	}
 #endif
 
 	option = 1;
-	setsockopt(nfd, SOL_SOCKET, SO_REUSEADDR, &option, sizeof(option));
+	setsockopt(nfd, SOL_SOCKET, SO_REUSEADDR, &option, sizeof option);
 
 #if defined(SOL_IP) && defined(IP_MTU_DISCOVER) && defined(IP_PMTUDISC_DO)
 	{
@@ -171,7 +183,7 @@ int setup_vpn_in_socket(const sockaddr_t *sa)
 
 		if(get_config_bool(lookup_config(myself->connection->config_tree, "PMTUDiscovery"), &choice) && choice) {
 			option = IP_PMTUDISC_DO;
-			setsockopt(nfd, SOL_IP, IP_MTU_DISCOVER, &option, sizeof(option));
+			setsockopt(nfd, SOL_IP, IP_MTU_DISCOVER, &option, sizeof option);
 		}
 	}
 #endif
@@ -182,7 +194,7 @@ int setup_vpn_in_socket(const sockaddr_t *sa)
 
 		if(get_config_bool(lookup_config(myself->connection->config_tree, "PMTUDiscovery"), &choice) && choice) {
 			option = IPV6_PMTUDISC_DO;
-			setsockopt(nfd, SOL_IPV6, IPV6_MTU_DISCOVER, &option, sizeof(option));
+			setsockopt(nfd, SOL_IPV6, IPV6_MTU_DISCOVER, &option, sizeof option);
 		}
 	}
 #endif
@@ -193,10 +205,10 @@ int setup_vpn_in_socket(const sockaddr_t *sa)
 		struct ifreq ifr;
 
 		if(get_config_string(lookup_config(config_tree, "BindToInterface"), &iface)) {
-			memset(&ifr, 0, sizeof(ifr));
+			memset(&ifr, 0, sizeof ifr);
 			strncpy(ifr.ifr_ifrn.ifrn_name, iface, IFNAMSIZ);
 
-			if(setsockopt(nfd, SOL_SOCKET, SO_BINDTODEVICE, &ifr, sizeof(ifr))) {
+			if(setsockopt(nfd, SOL_SOCKET, SO_BINDTODEVICE, &ifr, sizeof ifr)) {
 				closesocket(nfd);
 				logger(LOG_ERR, _("Can't bind to interface %s: %s"), iface,
 					   strerror(errno));
@@ -218,10 +230,11 @@ int setup_vpn_in_socket(const sockaddr_t *sa)
 	return nfd;
 }
 
-void retry_outgoing(outgoing_t *outgoing)
-{
-	tevent_t *event;
+static void retry_outgoing_handler(int fd, short events, void *data) {
+	setup_outgoing_connection(data);
+}
 
+void retry_outgoing(outgoing_t *outgoing) {
 	cp();
 
 	outgoing->timeout += 5;
@@ -229,32 +242,28 @@ void retry_outgoing(outgoing_t *outgoing)
 	if(outgoing->timeout > maxtimeout)
 		outgoing->timeout = maxtimeout;
 
-	event = new_tevent();
-	event->handler = (event_handler_t) setup_outgoing_connection;
-	event->time = now + outgoing->timeout;
-	event->data = outgoing;
-	tevent_add(event);
+	timeout_set(&outgoing->ev, retry_outgoing_handler, outgoing);
+	event_add(&outgoing->ev, &(struct timeval){outgoing->timeout, 0});
 
 	ifdebug(CONNECTIONS) logger(LOG_NOTICE,
 			   _("Trying to re-establish outgoing connection in %d seconds"),
 			   outgoing->timeout);
 }
 
-void finish_connecting(connection_t *c)
-{
+void finish_connecting(connection_t *c) {
 	cp();
 
 	ifdebug(CONNECTIONS) logger(LOG_INFO, _("Connected to %s (%s)"), c->name, c->hostname);
 
 	configure_tcp(c);
 
-	c->last_ping_time = now;
+	c->last_ping_time = time(NULL);
+	c->status.connecting = false;
 
 	send_id(c);
 }
 
-void do_outgoing_connection(connection_t *c)
-{
+void do_outgoing_connection(connection_t *c) {
 	char *address, *port;
 	int result;
 
@@ -265,8 +274,9 @@ begin:
 		if(!c->outgoing->cfg) {
 			ifdebug(CONNECTIONS) logger(LOG_ERR, _("Could not set up a meta connection to %s"),
 					   c->name);
-			c->status.remove = true;
 			retry_outgoing(c->outgoing);
+			c->outgoing = NULL;
+			connection_del(c);
 			return;
 		}
 
@@ -284,7 +294,8 @@ begin:
 	}
 
 	if(!c->outgoing->aip) {
-		freeaddrinfo(c->outgoing->ai);
+		if(c->outgoing->ai)
+			freeaddrinfo(c->outgoing->ai);
 		c->outgoing->ai = NULL;
 		goto begin;
 	}
@@ -318,7 +329,11 @@ begin:
 	result = connect(c->socket, &c->address.sa, SALEN(c->address.sa));
 
 	if(result == -1) {
-		if(errno == EINPROGRESS) {
+		if(errno == EINPROGRESS
+#if defined(WIN32) && !defined(O_NONBLOCK)
+		   || WSAGetLastError() == WSAEWOULDBLOCK
+#endif
+		) {
 			c->status.connecting = true;
 			return;
 		}
@@ -335,8 +350,22 @@ begin:
 	return;
 }
 
-void setup_outgoing_connection(outgoing_t *outgoing)
-{
+void handle_meta_read(struct bufferevent *event, void *data) {
+	logger(LOG_EMERG, _("handle_meta_read() called"));
+	abort();
+}
+
+void handle_meta_write(struct bufferevent *event, void *data) {
+	ifdebug(META) logger(LOG_DEBUG, _("handle_meta_write() called"));
+}
+
+void handle_meta_connection_error(struct bufferevent *event, short what, void *data) {
+	connection_t *c = data;
+	logger(LOG_EMERG, _("handle_meta_connection_error() called: %d: %s"), what, strerror(errno));
+	terminate_connection(c, c->status.active);
+}
+
+void setup_outgoing_connection(outgoing_t *outgoing) {
 	connection_t *c;
 	node_t *n;
 
@@ -373,37 +402,45 @@ void setup_outgoing_connection(outgoing_t *outgoing)
 	}
 
 	c->outgoing = outgoing;
-	c->last_ping_time = now;
+	c->last_ping_time = time(NULL);
 
 	connection_add(c);
 
 	do_outgoing_connection(c);
+
+	event_set(&c->inevent, c->socket, EV_READ | EV_PERSIST, handle_meta_connection_data, c);
+	event_add(&c->inevent, NULL);
+	c->buffer = bufferevent_new(c->socket, handle_meta_read, handle_meta_write, handle_meta_connection_error, c);
+	if(!c->buffer) {
+		logger(LOG_EMERG, _("bufferevent_new() failed: %s"), strerror(errno));
+		abort();
+	}
+	bufferevent_disable(c->buffer, EV_READ);
 }
 
 /*
   accept a new tcp connect and create a
   new connection
 */
-void handle_new_meta_connection(int sock, short events, void *data)
-{
+void handle_new_meta_connection(int sock, short events, void *data) {
 	connection_t *c;
 	sockaddr_t sa;
 	int fd;
-	socklen_t len = sizeof(sa);
+	socklen_t len = sizeof sa;
 
 	cp();
 
 	fd = accept(sock, &sa.sa, &len);
 
 	if(fd < 0) {
-		logger(LOG_ERR, _("Accepting a new connection failed: %s"),
-			   strerror(errno));
+		logger(LOG_ERR, _("Accepting a new connection failed: %s"), strerror(errno));
+		return;
 	}
 
 	sockaddrunmap(&sa);
 
 	c = new_connection();
-	c->name = NULL;
+	c->name = xstrdup("<unknown>");
 	c->outcipher = myself->connection->outcipher;
 	c->outdigest = myself->connection->outdigest;
 	c->outmaclength = myself->connection->outmaclength;
@@ -412,10 +449,19 @@ void handle_new_meta_connection(int sock, short events, void *data)
 	c->address = sa;
 	c->hostname = sockaddr2hostname(&sa);
 	c->socket = fd;
-	c->last_ping_time = now;
+	c->last_ping_time = time(NULL);
 
 	ifdebug(CONNECTIONS) logger(LOG_NOTICE, _("Connection from %s"), c->hostname);
 
+	event_set(&c->inevent, c->socket, EV_READ | EV_PERSIST, handle_meta_connection_data, c);
+	event_add(&c->inevent, NULL);
+	c->buffer = bufferevent_new(c->socket, NULL, handle_meta_write, handle_meta_connection_error, c);
+	if(!c->buffer) {
+		logger(LOG_EMERG, _("bufferevent_new() failed: %s"), strerror(errno));
+		abort();
+	}
+	bufferevent_disable(c->buffer, EV_READ);
+		
 	configure_tcp(c);
 
 	connection_add(c);
@@ -424,8 +470,7 @@ void handle_new_meta_connection(int sock, short events, void *data)
 	send_id(c);
 }
 
-void try_outgoing_connections(void)
-{
+void try_outgoing_connections(void) {
 	static config_t *cfg = NULL;
 	char *name;
 	outgoing_t *outgoing;
@@ -443,7 +488,7 @@ void try_outgoing_connections(void)
 			continue;
 		}
 
-		outgoing = xmalloc_and_zero(sizeof(*outgoing));
+		outgoing = xmalloc_and_zero(sizeof *outgoing);
 		outgoing->name = name;
 		setup_outgoing_connection(outgoing);
 	}