/*
net_socket.c -- Handle various kinds of sockets.
- Copyright (C) 1998-2003 Ivo Timmermans <ivo@o2w.nl>,
- 2000-2003 Guus Sliepen <guus@sliepen.eu.org>
+ Copyright (C) 1998-2005 Ivo Timmermans,
+ 2000-2009 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
along with this program; if not, write to the Free Software
Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
- $Id: net_socket.c,v 1.1.2.38 2003/12/22 11:04:16 guus Exp $
+ $Id$
*/
#include "system.h"
#define EINPROGRESS WSAEINPROGRESS
#endif
+/* Needed on Mac OS/X */
+#ifndef SOL_TCP
+#define SOL_TCP IPPROTO_TCP
+#endif
+
int addressfamily = AF_UNSPEC;
int maxtimeout = 900;
int seconds_till_retry = 5;
listen_socket_t listen_socket[MAXSOCKETS];
int listen_sockets;
+list_t *outgoing_list = NULL;
/* Setup sockets */
+static void configure_tcp(connection_t *c)
+{
+ int option;
+
+#ifdef O_NONBLOCK
+ int flags = fcntl(c->socket, F_GETFL);
+
+ 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));
+#endif
+
+#if defined(SOL_IP) && defined(IP_TOS) && defined(IPTOS_LOWDELAY)
+ option = IPTOS_LOWDELAY;
+ setsockopt(c->socket, SOL_IP, IP_TOS, &option, sizeof(option));
+#endif
+}
+
int setup_listen_socket(const sockaddr_t *sa)
{
int nfd;
return -1;
}
-#ifdef O_NONBLOCK
- {
- int flags = fcntl(nfd, F_GETFL);
-
- if(fcntl(nfd, F_SETFL, flags | O_NONBLOCK) < 0) {
- closesocket(nfd);
- logger(LOG_ERR, _("System call `%s' failed: %s"), "fcntl",
- strerror(errno));
- return -1;
- }
- }
-#endif
-
/* Optimize TCP settings */
option = 1;
setsockopt(nfd, SOL_SOCKET, SO_REUSEADDR, &option, sizeof(option));
-#if defined(SOL_TCP) && defined(TCP_NODELAY)
- setsockopt(nfd, SOL_TCP, TCP_NODELAY, &option, sizeof(option));
-#endif
-
-#if defined(SOL_IP) && defined(IP_TOS) && defined(IPTOS_LOWDELAY)
- option = IPTOS_LOWDELAY;
- setsockopt(nfd, SOL_IP, IP_TOS, &option, sizeof(option));
+#if defined(SOL_IPV6) && defined(IPV6_V6ONLY)
+ if(sa->sa.sa_family == AF_INET6)
+ setsockopt(nfd, SOL_IPV6, IPV6_V6ONLY, &option, sizeof option);
#endif
if(get_config_string
return -1;
}
#else
- logger(LOG_WARNING, _("BindToInterface not supported on this platform"));
+ logger(LOG_WARNING, _("%s not supported on this platform"), "BindToInterface");
#endif
}
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));
-#if defined(SOL_IP) && defined(IP_MTU_DISCOVER) && defined(IP_PMTUDISC_DO)
- {
- bool choice;
+#if defined(SOL_IPV6) && defined(IPV6_V6ONLY)
+ if(sa->sa.sa_family == AF_INET6)
+ setsockopt(nfd, SOL_IPV6, IPV6_V6ONLY, &option, sizeof option);
+#endif
- 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));
- }
+#if defined(SOL_IP) && defined(IP_MTU_DISCOVER) && defined(IP_PMTUDISC_DO)
+ if(myself->options & OPTION_PMTU_DISCOVERY) {
+ option = IP_PMTUDISC_DO;
+ setsockopt(nfd, SOL_IP, IP_MTU_DISCOVER, &option, sizeof(option));
}
#endif
#if defined(SOL_IPV6) && defined(IPV6_MTU_DISCOVER) && defined(IPV6_PMTUDISC_DO)
- {
- bool choice;
-
- 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));
- }
+ if(myself->options & OPTION_PMTU_DISCOVERY) {
+ option = IPV6_PMTUDISC_DO;
+ setsockopt(nfd, SOL_IPV6, IPV6_MTU_DISCOVER, &option, sizeof(option));
}
#endif
ifdebug(CONNECTIONS) logger(LOG_INFO, _("Connected to %s (%s)"), c->name, c->hostname);
+ configure_tcp(c);
+
c->last_ping_time = now;
send_id(c);
void do_outgoing_connection(connection_t *c)
{
char *address, *port;
- int option, result, flags;
+ int result;
cp();
}
if(!c->outgoing->aip) {
- freeaddrinfo(c->outgoing->ai);
+ if(c->outgoing->ai)
+ freeaddrinfo(c->outgoing->ai);
c->outgoing->ai = NULL;
goto begin;
}
goto begin;
}
- /* Optimize TCP settings */
-
-#if defined(SOL_TCP) && defined(TCP_NODELAY)
- option = 1;
- setsockopt(c->socket, SOL_TCP, TCP_NODELAY, &option, sizeof(option));
-#endif
-
-#if defined(SOL_IP) && defined(IP_TOS)
- option = IPTOS_LOWDELAY;
- setsockopt(c->socket, SOL_IP, IP_TOS, &option, sizeof(option));
+#if defined(SOL_IPV6) && defined(IPV6_V6ONLY)
+ int option = 1;
+ if(c->address.sa.sa_family == AF_INET6)
+ setsockopt(c->socket, SOL_IPV6, IPV6_V6ONLY, &option, sizeof option);
#endif
- /* Non-blocking */
+ /* Optimize TCP settings */
-#ifdef O_NONBLOCK
- flags = fcntl(c->socket, F_GETFL);
-
- if(fcntl(c->socket, F_SETFL, flags | O_NONBLOCK) < 0) {
- logger(LOG_ERR, _("fcntl for %s: %s"), c->hostname, strerror(errno));
- }
-#endif
+ configure_tcp(c);
/* Connect */
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;
}
if(!outgoing->cfg) {
logger(LOG_ERR, _("No address specified for %s"), c->name);
free_connection(c);
- free(outgoing->name);
- free(outgoing);
return;
}
{
connection_t *c;
sockaddr_t sa;
- int fd, len = sizeof(sa);
+ int fd;
+ socklen_t len = sizeof(sa);
cp();
sockaddrunmap(&sa);
c = new_connection();
+ c->name = xstrdup("<unknown>");
c->outcipher = myself->connection->outcipher;
c->outdigest = myself->connection->outdigest;
c->outmaclength = myself->connection->outmaclength;
ifdebug(CONNECTIONS) logger(LOG_NOTICE, _("Connection from %s"), c->hostname);
+ configure_tcp(c);
+
connection_add(c);
c->allow_request = ID;
return true;
}
+void free_outgoing(outgoing_t *outgoing) {
+ if(outgoing->ai)
+ freeaddrinfo(outgoing->ai);
+
+ if(outgoing->name)
+ free(outgoing->name);
+
+ free(outgoing);
+}
+
void try_outgoing_connections(void)
{
static config_t *cfg = NULL;
char *name;
outgoing_t *outgoing;
-
+ connection_t *c;
+ avl_node_t *node;
+
cp();
- for(cfg = lookup_config(config_tree, "ConnectTo"); cfg;
- cfg = lookup_config_next(config_tree, cfg)) {
+ if(outgoing_list) {
+ for(node = connection_tree->head; node; node = node->next) {
+ c = node->data;
+ c->outgoing = NULL;
+ }
+
+ list_delete_list(outgoing_list);
+ }
+
+ outgoing_list = list_alloc((list_action_t)free_outgoing);
+
+ for(cfg = lookup_config(config_tree, "ConnectTo"); cfg; cfg = lookup_config_next(config_tree, cfg)) {
get_config_string(cfg, &name);
if(!check_id(name)) {
outgoing = xmalloc_and_zero(sizeof(*outgoing));
outgoing->name = name;
+ list_insert_tail(outgoing_list, outgoing);
setup_outgoing_connection(outgoing);
}
}
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