2002-02-18 16:25:19 +00:00
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/*
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net_socket.c -- Handle various kinds of sockets.
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2006-04-26 13:52:58 +00:00
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Copyright (C) 1998-2005 Ivo Timmermans,
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2009-03-05 13:12:36 +00:00
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2000-2009 Guus Sliepen <guus@tinc-vpn.org>
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2009-09-24 21:29:46 +00:00
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2009 Florian Forster <octo@verplant.org>
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2002-02-18 16:25:19 +00:00
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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2009-09-24 22:01:00 +00:00
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You should have received a copy of the GNU General Public License along
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with this program; if not, write to the Free Software Foundation, Inc.,
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51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
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2002-02-18 16:25:19 +00:00
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*/
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2003-07-17 15:06:27 +00:00
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#include "system.h"
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2002-02-18 16:25:19 +00:00
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2003-07-17 15:06:27 +00:00
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#include "avl_tree.h"
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2002-02-18 16:25:19 +00:00
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#include "conf.h"
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#include "connection.h"
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2003-07-17 15:06:27 +00:00
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#include "event.h"
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#include "logger.h"
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2002-02-18 16:25:19 +00:00
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#include "meta.h"
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#include "net.h"
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#include "netutl.h"
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#include "protocol.h"
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2003-07-17 15:06:27 +00:00
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#include "utils.h"
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#include "xalloc.h"
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2002-04-18 20:09:05 +00:00
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2009-05-27 12:20:24 +00:00
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#include <assert.h>
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2003-07-28 22:06:09 +00:00
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#ifdef WSAEINPROGRESS
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#define EINPROGRESS WSAEINPROGRESS
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#endif
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2006-01-13 11:21:59 +00:00
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/* Needed on Mac OS/X */
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#ifndef SOL_TCP
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#define SOL_TCP IPPROTO_TCP
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#endif
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2003-06-11 19:27:35 +00:00
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int addressfamily = AF_UNSPEC;
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2002-02-18 16:25:19 +00:00
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int maxtimeout = 900;
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int seconds_till_retry = 5;
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2002-03-18 22:47:20 +00:00
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listen_socket_t listen_socket[MAXSOCKETS];
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2002-06-13 16:12:40 +00:00
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int listen_sockets;
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2009-01-20 12:12:41 +00:00
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list_t *outgoing_list = NULL;
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2002-02-26 23:26:41 +00:00
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2002-02-18 16:25:19 +00:00
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/* Setup sockets */
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2006-01-13 11:21:59 +00:00
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static void configure_tcp(connection_t *c)
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{
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int option;
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#ifdef O_NONBLOCK
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2006-01-19 17:13:18 +00:00
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int flags = fcntl(c->socket, F_GETFL);
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2006-01-13 11:21:59 +00:00
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2006-01-19 17:13:18 +00:00
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if(fcntl(c->socket, F_SETFL, flags | O_NONBLOCK) < 0) {
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logger(LOG_ERR, _("fcntl for %s: %s"), c->hostname, strerror(errno));
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2006-01-13 11:21:59 +00:00
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}
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2007-05-14 09:21:09 +00:00
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#elif defined(WIN32)
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unsigned long arg = 1;
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if(ioctlsocket(c->socket, FIONBIO, &arg) != 0) {
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logger(LOG_ERR, _("ioctlsocket for %s: WSA error %d"), c->hostname, WSAGetLastError());
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}
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2006-01-13 11:21:59 +00:00
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#endif
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#if defined(SOL_TCP) && defined(TCP_NODELAY)
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option = 1;
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setsockopt(c->socket, SOL_TCP, TCP_NODELAY, &option, sizeof(option));
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#endif
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#if defined(SOL_IP) && defined(IP_TOS) && defined(IPTOS_LOWDELAY)
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option = IPTOS_LOWDELAY;
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setsockopt(c->socket, SOL_IP, IP_TOS, &option, sizeof(option));
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#endif
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}
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2009-05-27 12:20:24 +00:00
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static bool bind_to_interface(int sd) { /* {{{ */
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char *iface;
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#if defined(SOL_SOCKET) && defined(SO_BINDTODEVICE)
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struct ifreq ifr;
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int status;
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#endif /* defined(SOL_SOCKET) && defined(SO_BINDTODEVICE) */
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if(!get_config_string (lookup_config (config_tree, "BindToInterface"), &iface))
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return true;
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#if defined(SOL_SOCKET) && defined(SO_BINDTODEVICE)
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memset(&ifr, 0, sizeof(ifr));
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strncpy(ifr.ifr_ifrn.ifrn_name, iface, IFNAMSIZ);
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ifr.ifr_ifrn.ifrn_name[IFNAMSIZ - 1] = 0;
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status = setsockopt(sd, SOL_SOCKET, SO_BINDTODEVICE, &ifr, sizeof(ifr));
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if(status) {
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logger(LOG_ERR, _("Can't bind to interface %s: %s"), iface,
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strerror(errno));
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return false;
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}
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#else /* if !defined(SOL_SOCKET) || !defined(SO_BINDTODEVICE) */
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logger(LOG_WARNING, _("%s not supported on this platform"), "BindToInterface");
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#endif
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return true;
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} /* }}} bool bind_to_interface */
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static bool bind_to_address(connection_t *c) { /* {{{ */
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char *node;
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struct addrinfo *ai_list;
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struct addrinfo *ai_ptr;
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struct addrinfo ai_hints;
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int status;
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assert(c != NULL);
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assert(c->socket >= 0);
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node = NULL;
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if(!get_config_string(lookup_config(config_tree, "BindToAddress"),
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&node))
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return true;
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assert(node != NULL);
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memset(&ai_hints, 0, sizeof(ai_hints));
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ai_hints.ai_family = c->address.sa.sa_family;
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/* We're called from `do_outgoing_connection' only. */
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ai_hints.ai_socktype = SOCK_STREAM;
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ai_hints.ai_protocol = IPPROTO_TCP;
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ai_list = NULL;
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status = getaddrinfo(node, /* service = */ NULL,
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&ai_hints, &ai_list);
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if(status) {
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free(node);
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logger(LOG_WARNING, _("Error looking up %s port %s: %s"),
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node, _("any"), gai_strerror(status));
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return false;
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}
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assert(ai_list != NULL);
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status = -1;
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for(ai_ptr = ai_list; ai_ptr != NULL; ai_ptr = ai_ptr->ai_next) {
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status = bind(c->socket,
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ai_list->ai_addr, ai_list->ai_addrlen);
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if(!status)
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break;
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}
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if(status) {
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logger(LOG_ERR, _("Can't bind to %s/tcp: %s"), node,
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strerror(errno));
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} else ifdebug(CONNECTIONS) {
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logger(LOG_DEBUG, "Successfully bound outgoing "
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"TCP socket to %s", node);
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}
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free(node);
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freeaddrinfo(ai_list);
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return status ? false : true;
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} /* }}} bool bind_to_address */
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2003-07-24 12:08:16 +00:00
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int setup_listen_socket(const sockaddr_t *sa)
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2002-02-18 16:25:19 +00:00
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{
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2003-12-20 19:47:53 +00:00
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int nfd;
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2002-09-09 21:25:28 +00:00
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char *addrstr;
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int option;
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2003-07-18 13:45:06 +00:00
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char *iface;
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2002-09-09 19:40:12 +00:00
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2002-09-09 21:25:28 +00:00
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cp();
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2002-02-18 16:25:19 +00:00
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2002-09-09 21:25:28 +00:00
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nfd = socket(sa->sa.sa_family, SOCK_STREAM, IPPROTO_TCP);
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2002-02-18 16:25:19 +00:00
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2002-09-09 21:25:28 +00:00
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if(nfd < 0) {
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2003-10-06 14:41:45 +00:00
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ifdebug(STATUS) logger(LOG_ERR, _("Creating metasocket failed: %s"), strerror(errno));
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2002-09-09 21:25:28 +00:00
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return -1;
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}
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/* Optimize TCP settings */
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2002-02-18 16:25:19 +00:00
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2002-09-09 21:25:28 +00:00
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option = 1;
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setsockopt(nfd, SOL_SOCKET, SO_REUSEADDR, &option, sizeof(option));
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2002-03-01 15:14:29 +00:00
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2008-12-22 19:40:40 +00:00
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#if defined(SOL_IPV6) && defined(IPV6_V6ONLY)
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if(sa->sa.sa_family == AF_INET6)
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setsockopt(nfd, SOL_IPV6, IPV6_V6ONLY, &option, sizeof option);
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#endif
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2002-09-09 21:25:28 +00:00
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if(get_config_string
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2003-07-18 13:45:06 +00:00
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(lookup_config(config_tree, "BindToInterface"), &iface)) {
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2002-03-01 15:14:29 +00:00
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#if defined(SOL_SOCKET) && defined(SO_BINDTODEVICE)
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2003-12-20 19:47:53 +00:00
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struct ifreq ifr;
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2002-09-09 21:25:28 +00:00
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memset(&ifr, 0, sizeof(ifr));
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2003-07-18 13:45:06 +00:00
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strncpy(ifr.ifr_ifrn.ifrn_name, iface, IFNAMSIZ);
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2002-09-09 21:25:28 +00:00
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if(setsockopt(nfd, SOL_SOCKET, SO_BINDTODEVICE, &ifr, sizeof(ifr))) {
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2003-07-29 22:59:01 +00:00
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closesocket(nfd);
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2003-07-18 13:45:06 +00:00
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logger(LOG_ERR, _("Can't bind to interface %s: %s"), iface,
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2002-09-09 21:25:28 +00:00
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strerror(errno));
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return -1;
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}
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2002-03-01 15:14:29 +00:00
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#else
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2009-05-18 13:34:30 +00:00
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logger(LOG_WARNING, _("%s not supported on this platform"), "BindToInterface");
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2002-02-18 16:25:19 +00:00
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#endif
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2002-09-09 21:25:28 +00:00
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}
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if(bind(nfd, &sa->sa, SALEN(sa->sa))) {
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2003-07-29 22:59:01 +00:00
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closesocket(nfd);
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2002-09-09 21:25:28 +00:00
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addrstr = sockaddr2hostname(sa);
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2003-07-12 17:41:48 +00:00
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logger(LOG_ERR, _("Can't bind to %s/tcp: %s"), addrstr,
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2002-09-09 21:25:28 +00:00
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strerror(errno));
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free(addrstr);
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return -1;
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}
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if(listen(nfd, 3)) {
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2003-07-29 22:59:01 +00:00
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closesocket(nfd);
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2003-07-12 17:41:48 +00:00
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logger(LOG_ERR, _("System call `%s' failed: %s"), "listen",
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2002-09-09 21:25:28 +00:00
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strerror(errno));
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return -1;
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}
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return nfd;
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2002-02-18 16:25:19 +00:00
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}
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2003-07-24 12:08:16 +00:00
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int setup_vpn_in_socket(const sockaddr_t *sa)
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2002-02-18 16:25:19 +00:00
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{
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2003-12-20 19:47:53 +00:00
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int nfd;
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2002-09-09 21:25:28 +00:00
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char *addrstr;
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int option;
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cp();
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nfd = socket(sa->sa.sa_family, SOCK_DGRAM, IPPROTO_UDP);
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if(nfd < 0) {
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2003-07-12 17:41:48 +00:00
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logger(LOG_ERR, _("Creating UDP socket failed: %s"), strerror(errno));
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2002-09-09 21:25:28 +00:00
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return -1;
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}
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2003-07-28 22:06:09 +00:00
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#ifdef O_NONBLOCK
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2003-12-20 19:47:53 +00:00
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{
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int flags = fcntl(nfd, F_GETFL);
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if(fcntl(nfd, F_SETFL, flags | O_NONBLOCK) < 0) {
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closesocket(nfd);
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logger(LOG_ERR, _("System call `%s' failed: %s"), "fcntl",
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strerror(errno));
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return -1;
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}
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2002-09-09 21:25:28 +00:00
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}
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2007-05-14 09:21:09 +00:00
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#elif defined(WIN32)
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{
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unsigned long arg = 1;
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if(ioctlsocket(nfd, FIONBIO, &arg) != 0) {
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closesocket(nfd);
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logger(LOG_ERR, _("Call to `%s' failed: WSA error %d"), "ioctlsocket",
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WSAGetLastError());
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return -1;
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}
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}
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2003-07-28 22:06:09 +00:00
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#endif
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2002-09-09 21:25:28 +00:00
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option = 1;
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setsockopt(nfd, SOL_SOCKET, SO_REUSEADDR, &option, sizeof(option));
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2002-03-01 15:14:29 +00:00
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2008-12-22 19:40:40 +00:00
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#if defined(SOL_IPV6) && defined(IPV6_V6ONLY)
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if(sa->sa.sa_family == AF_INET6)
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setsockopt(nfd, SOL_IPV6, IPV6_V6ONLY, &option, sizeof option);
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#endif
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2003-12-20 19:47:53 +00:00
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#if defined(SOL_IP) && defined(IP_MTU_DISCOVER) && defined(IP_PMTUDISC_DO)
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2009-03-09 12:48:54 +00:00
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if(myself->options & OPTION_PMTU_DISCOVERY) {
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option = IP_PMTUDISC_DO;
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setsockopt(nfd, SOL_IP, IP_MTU_DISCOVER, &option, sizeof(option));
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2003-12-20 21:09:33 +00:00
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}
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#endif
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#if defined(SOL_IPV6) && defined(IPV6_MTU_DISCOVER) && defined(IPV6_PMTUDISC_DO)
|
2009-03-09 12:48:54 +00:00
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if(myself->options & OPTION_PMTU_DISCOVERY) {
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option = IPV6_PMTUDISC_DO;
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setsockopt(nfd, SOL_IPV6, IPV6_MTU_DISCOVER, &option, sizeof(option));
|
2003-12-20 19:47:53 +00:00
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}
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#endif
|
2002-09-09 21:25:28 +00:00
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2009-05-27 12:20:24 +00:00
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if (!bind_to_interface(nfd)) {
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closesocket(nfd);
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return -1;
|
2002-03-01 11:18:34 +00:00
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}
|
2002-02-18 16:25:19 +00:00
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2002-09-09 21:25:28 +00:00
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|
if(bind(nfd, &sa->sa, SALEN(sa->sa))) {
|
2003-07-29 22:59:01 +00:00
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|
|
closesocket(nfd);
|
2002-09-09 21:25:28 +00:00
|
|
|
addrstr = sockaddr2hostname(sa);
|
2003-07-12 17:41:48 +00:00
|
|
|
logger(LOG_ERR, _("Can't bind to %s/udp: %s"), addrstr,
|
2002-09-09 21:25:28 +00:00
|
|
|
strerror(errno));
|
|
|
|
free(addrstr);
|
|
|
|
return -1;
|
|
|
|
}
|
|
|
|
|
|
|
|
return nfd;
|
2009-05-27 12:20:24 +00:00
|
|
|
} /* int setup_vpn_in_socket */
|
2002-02-18 16:25:19 +00:00
|
|
|
|
2002-09-09 22:33:31 +00:00
|
|
|
void retry_outgoing(outgoing_t *outgoing)
|
2002-02-18 16:25:19 +00:00
|
|
|
{
|
2002-09-09 21:25:28 +00:00
|
|
|
event_t *event;
|
|
|
|
|
|
|
|
cp();
|
|
|
|
|
|
|
|
outgoing->timeout += 5;
|
|
|
|
|
|
|
|
if(outgoing->timeout > maxtimeout)
|
|
|
|
outgoing->timeout = maxtimeout;
|
|
|
|
|
|
|
|
event = new_event();
|
|
|
|
event->handler = (event_handler_t) setup_outgoing_connection;
|
|
|
|
event->time = now + outgoing->timeout;
|
|
|
|
event->data = outgoing;
|
|
|
|
event_add(event);
|
|
|
|
|
2003-07-12 17:41:48 +00:00
|
|
|
ifdebug(CONNECTIONS) logger(LOG_NOTICE,
|
2002-09-09 21:25:28 +00:00
|
|
|
_("Trying to re-establish outgoing connection in %d seconds"),
|
|
|
|
outgoing->timeout);
|
2002-02-18 16:25:19 +00:00
|
|
|
}
|
|
|
|
|
2002-09-09 22:33:31 +00:00
|
|
|
void finish_connecting(connection_t *c)
|
2002-02-18 16:25:19 +00:00
|
|
|
{
|
2002-09-09 21:25:28 +00:00
|
|
|
cp();
|
|
|
|
|
2003-07-12 17:41:48 +00:00
|
|
|
ifdebug(CONNECTIONS) logger(LOG_INFO, _("Connected to %s (%s)"), c->name, c->hostname);
|
2002-02-18 16:25:19 +00:00
|
|
|
|
2006-01-13 11:21:59 +00:00
|
|
|
configure_tcp(c);
|
2004-11-10 21:56:31 +00:00
|
|
|
|
2002-09-09 21:25:28 +00:00
|
|
|
c->last_ping_time = now;
|
2002-02-18 16:25:19 +00:00
|
|
|
|
2002-09-09 21:25:28 +00:00
|
|
|
send_id(c);
|
2002-02-18 16:25:19 +00:00
|
|
|
}
|
|
|
|
|
2002-09-09 22:33:31 +00:00
|
|
|
void do_outgoing_connection(connection_t *c)
|
2002-02-18 16:25:19 +00:00
|
|
|
{
|
2002-09-09 21:25:28 +00:00
|
|
|
char *address, *port;
|
2006-08-08 13:44:19 +00:00
|
|
|
int result;
|
2002-02-18 16:25:19 +00:00
|
|
|
|
2002-09-09 21:25:28 +00:00
|
|
|
cp();
|
2002-02-18 16:25:19 +00:00
|
|
|
|
2002-09-09 21:25:28 +00:00
|
|
|
begin:
|
|
|
|
if(!c->outgoing->ai) {
|
|
|
|
if(!c->outgoing->cfg) {
|
2003-07-12 17:41:48 +00:00
|
|
|
ifdebug(CONNECTIONS) logger(LOG_ERR, _("Could not set up a meta connection to %s"),
|
2002-09-09 21:25:28 +00:00
|
|
|
c->name);
|
2003-07-22 20:55:21 +00:00
|
|
|
c->status.remove = true;
|
2002-09-09 21:25:28 +00:00
|
|
|
retry_outgoing(c->outgoing);
|
|
|
|
return;
|
|
|
|
}
|
|
|
|
|
|
|
|
get_config_string(c->outgoing->cfg, &address);
|
|
|
|
|
|
|
|
if(!get_config_string(lookup_config(c->config_tree, "Port"), &port))
|
2009-09-08 16:18:36 +00:00
|
|
|
xasprintf(&port, "655");
|
2002-09-09 21:25:28 +00:00
|
|
|
|
|
|
|
c->outgoing->ai = str2addrinfo(address, port, SOCK_STREAM);
|
|
|
|
free(address);
|
|
|
|
free(port);
|
|
|
|
|
|
|
|
c->outgoing->aip = c->outgoing->ai;
|
|
|
|
c->outgoing->cfg = lookup_config_next(c->config_tree, c->outgoing->cfg);
|
|
|
|
}
|
2002-02-18 16:25:19 +00:00
|
|
|
|
2002-09-09 21:25:28 +00:00
|
|
|
if(!c->outgoing->aip) {
|
2008-11-18 15:11:27 +00:00
|
|
|
if(c->outgoing->ai)
|
|
|
|
freeaddrinfo(c->outgoing->ai);
|
2002-09-09 21:25:28 +00:00
|
|
|
c->outgoing->ai = NULL;
|
|
|
|
goto begin;
|
|
|
|
}
|
2002-02-18 16:25:19 +00:00
|
|
|
|
2003-12-12 19:52:25 +00:00
|
|
|
memcpy(&c->address, c->outgoing->aip->ai_addr, c->outgoing->aip->ai_addrlen);
|
2002-09-09 21:25:28 +00:00
|
|
|
c->outgoing->aip = c->outgoing->aip->ai_next;
|
2002-02-18 16:25:19 +00:00
|
|
|
|
2002-09-09 21:25:28 +00:00
|
|
|
if(c->hostname)
|
|
|
|
free(c->hostname);
|
2002-02-18 16:25:19 +00:00
|
|
|
|
2002-09-09 21:25:28 +00:00
|
|
|
c->hostname = sockaddr2hostname(&c->address);
|
2002-02-18 16:25:19 +00:00
|
|
|
|
2003-07-12 17:41:48 +00:00
|
|
|
ifdebug(CONNECTIONS) logger(LOG_INFO, _("Trying to connect to %s (%s)"), c->name,
|
2002-09-09 21:25:28 +00:00
|
|
|
c->hostname);
|
2002-02-18 16:25:19 +00:00
|
|
|
|
2002-09-09 21:25:28 +00:00
|
|
|
c->socket = socket(c->address.sa.sa_family, SOCK_STREAM, IPPROTO_TCP);
|
2002-02-18 16:25:19 +00:00
|
|
|
|
2002-09-09 21:25:28 +00:00
|
|
|
if(c->socket == -1) {
|
2003-07-12 17:41:48 +00:00
|
|
|
ifdebug(CONNECTIONS) logger(LOG_ERR, _("Creating socket for %s failed: %s"), c->hostname,
|
2002-09-09 21:25:28 +00:00
|
|
|
strerror(errno));
|
2002-02-18 16:25:19 +00:00
|
|
|
|
2002-09-09 21:25:28 +00:00
|
|
|
goto begin;
|
|
|
|
}
|
2002-02-18 16:25:19 +00:00
|
|
|
|
2008-12-22 19:40:40 +00:00
|
|
|
#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
|
|
|
|
|
2009-05-27 12:20:24 +00:00
|
|
|
bind_to_interface(c->socket);
|
|
|
|
bind_to_address(c);
|
|
|
|
|
2002-09-09 21:25:28 +00:00
|
|
|
/* Optimize TCP settings */
|
2002-02-18 16:25:19 +00:00
|
|
|
|
2006-01-13 11:21:59 +00:00
|
|
|
configure_tcp(c);
|
2002-02-18 16:25:19 +00:00
|
|
|
|
2002-09-09 21:25:28 +00:00
|
|
|
/* Connect */
|
2002-02-18 16:25:19 +00:00
|
|
|
|
2002-09-09 21:25:28 +00:00
|
|
|
result = connect(c->socket, &c->address.sa, SALEN(c->address.sa));
|
2002-02-18 16:25:19 +00:00
|
|
|
|
2002-09-09 21:25:28 +00:00
|
|
|
if(result == -1) {
|
2007-05-14 09:21:09 +00:00
|
|
|
if(errno == EINPROGRESS
|
|
|
|
#if defined(WIN32) && !defined(O_NONBLOCK)
|
|
|
|
|| WSAGetLastError() == WSAEWOULDBLOCK
|
|
|
|
#endif
|
|
|
|
) {
|
2003-07-22 20:55:21 +00:00
|
|
|
c->status.connecting = true;
|
2002-09-09 21:25:28 +00:00
|
|
|
return;
|
|
|
|
}
|
2002-02-18 16:25:19 +00:00
|
|
|
|
2003-07-29 22:59:01 +00:00
|
|
|
closesocket(c->socket);
|
2002-02-18 16:25:19 +00:00
|
|
|
|
2003-07-12 17:41:48 +00:00
|
|
|
ifdebug(CONNECTIONS) logger(LOG_ERR, _("%s: %s"), c->hostname, strerror(errno));
|
2002-09-09 21:25:28 +00:00
|
|
|
|
|
|
|
goto begin;
|
|
|
|
}
|
2002-02-18 16:25:19 +00:00
|
|
|
|
2002-09-09 21:25:28 +00:00
|
|
|
finish_connecting(c);
|
2002-02-18 16:25:19 +00:00
|
|
|
|
2002-09-09 21:25:28 +00:00
|
|
|
return;
|
2002-02-18 16:25:19 +00:00
|
|
|
}
|
|
|
|
|
2002-09-09 22:33:31 +00:00
|
|
|
void setup_outgoing_connection(outgoing_t *outgoing)
|
2002-02-18 16:25:19 +00:00
|
|
|
{
|
2002-09-09 21:25:28 +00:00
|
|
|
connection_t *c;
|
|
|
|
node_t *n;
|
|
|
|
|
|
|
|
cp();
|
|
|
|
|
|
|
|
n = lookup_node(outgoing->name);
|
|
|
|
|
|
|
|
if(n)
|
|
|
|
if(n->connection) {
|
2003-07-12 17:41:48 +00:00
|
|
|
ifdebug(CONNECTIONS) logger(LOG_INFO, _("Already connected to %s"), outgoing->name);
|
2002-09-09 21:25:28 +00:00
|
|
|
|
|
|
|
n->connection->outgoing = outgoing;
|
|
|
|
return;
|
|
|
|
}
|
|
|
|
|
|
|
|
c = new_connection();
|
|
|
|
c->name = xstrdup(outgoing->name);
|
|
|
|
c->outcipher = myself->connection->outcipher;
|
|
|
|
c->outdigest = myself->connection->outdigest;
|
|
|
|
c->outmaclength = myself->connection->outmaclength;
|
|
|
|
c->outcompression = myself->connection->outcompression;
|
|
|
|
|
|
|
|
init_configuration(&c->config_tree);
|
|
|
|
read_connection_config(c);
|
|
|
|
|
|
|
|
outgoing->cfg = lookup_config(c->config_tree, "Address");
|
|
|
|
|
|
|
|
if(!outgoing->cfg) {
|
2003-07-12 17:41:48 +00:00
|
|
|
logger(LOG_ERR, _("No address specified for %s"), c->name);
|
2002-09-09 21:25:28 +00:00
|
|
|
free_connection(c);
|
|
|
|
return;
|
|
|
|
}
|
|
|
|
|
|
|
|
c->outgoing = outgoing;
|
|
|
|
c->last_ping_time = now;
|
|
|
|
|
|
|
|
connection_add(c);
|
|
|
|
|
|
|
|
do_outgoing_connection(c);
|
2002-02-18 16:25:19 +00:00
|
|
|
}
|
|
|
|
|
|
|
|
/*
|
|
|
|
accept a new tcp connect and create a
|
|
|
|
new connection
|
|
|
|
*/
|
2003-07-22 20:55:21 +00:00
|
|
|
bool handle_new_meta_connection(int sock)
|
2002-02-18 16:25:19 +00:00
|
|
|
{
|
2002-09-09 21:25:28 +00:00
|
|
|
connection_t *c;
|
|
|
|
sockaddr_t sa;
|
2006-03-19 13:06:21 +00:00
|
|
|
int fd;
|
|
|
|
socklen_t len = sizeof(sa);
|
2002-09-09 21:25:28 +00:00
|
|
|
|
|
|
|
cp();
|
|
|
|
|
|
|
|
fd = accept(sock, &sa.sa, &len);
|
|
|
|
|
|
|
|
if(fd < 0) {
|
2003-07-12 17:41:48 +00:00
|
|
|
logger(LOG_ERR, _("Accepting a new connection failed: %s"),
|
2002-09-09 21:25:28 +00:00
|
|
|
strerror(errno));
|
2003-07-22 20:55:21 +00:00
|
|
|
return false;
|
2002-09-09 21:25:28 +00:00
|
|
|
}
|
|
|
|
|
|
|
|
sockaddrunmap(&sa);
|
|
|
|
|
|
|
|
c = new_connection();
|
2007-05-16 14:42:08 +00:00
|
|
|
c->name = xstrdup("<unknown>");
|
2002-09-09 21:25:28 +00:00
|
|
|
c->outcipher = myself->connection->outcipher;
|
|
|
|
c->outdigest = myself->connection->outdigest;
|
|
|
|
c->outmaclength = myself->connection->outmaclength;
|
|
|
|
c->outcompression = myself->connection->outcompression;
|
|
|
|
|
|
|
|
c->address = sa;
|
|
|
|
c->hostname = sockaddr2hostname(&sa);
|
|
|
|
c->socket = fd;
|
|
|
|
c->last_ping_time = now;
|
|
|
|
|
2003-07-12 17:41:48 +00:00
|
|
|
ifdebug(CONNECTIONS) logger(LOG_NOTICE, _("Connection from %s"), c->hostname);
|
2002-09-09 21:25:28 +00:00
|
|
|
|
2006-01-13 11:21:59 +00:00
|
|
|
configure_tcp(c);
|
2004-11-10 21:56:31 +00:00
|
|
|
|
2002-09-09 21:25:28 +00:00
|
|
|
connection_add(c);
|
|
|
|
|
|
|
|
c->allow_request = ID;
|
|
|
|
send_id(c);
|
|
|
|
|
2003-07-22 20:55:21 +00:00
|
|
|
return true;
|
2002-02-18 16:25:19 +00:00
|
|
|
}
|
|
|
|
|
2009-01-20 12:12:41 +00:00
|
|
|
void free_outgoing(outgoing_t *outgoing) {
|
|
|
|
if(outgoing->ai)
|
|
|
|
freeaddrinfo(outgoing->ai);
|
|
|
|
|
|
|
|
if(outgoing->name)
|
|
|
|
free(outgoing->name);
|
|
|
|
|
|
|
|
free(outgoing);
|
|
|
|
}
|
|
|
|
|
2002-02-18 16:25:19 +00:00
|
|
|
void try_outgoing_connections(void)
|
|
|
|
{
|
2002-09-09 21:25:28 +00:00
|
|
|
static config_t *cfg = NULL;
|
|
|
|
char *name;
|
|
|
|
outgoing_t *outgoing;
|
2009-01-20 12:12:41 +00:00
|
|
|
connection_t *c;
|
|
|
|
avl_node_t *node;
|
|
|
|
|
2002-09-09 21:25:28 +00:00
|
|
|
cp();
|
|
|
|
|
2009-01-20 12:12:41 +00:00
|
|
|
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);
|
|
|
|
|
2005-05-04 15:51:45 +00:00
|
|
|
for(cfg = lookup_config(config_tree, "ConnectTo"); cfg; cfg = lookup_config_next(config_tree, cfg)) {
|
2002-09-09 21:25:28 +00:00
|
|
|
get_config_string(cfg, &name);
|
|
|
|
|
2003-07-22 20:55:21 +00:00
|
|
|
if(!check_id(name)) {
|
2003-07-12 17:41:48 +00:00
|
|
|
logger(LOG_ERR,
|
2002-09-09 21:25:28 +00:00
|
|
|
_("Invalid name for outgoing connection in %s line %d"),
|
|
|
|
cfg->file, cfg->line);
|
|
|
|
free(name);
|
|
|
|
continue;
|
|
|
|
}
|
|
|
|
|
|
|
|
outgoing = xmalloc_and_zero(sizeof(*outgoing));
|
|
|
|
outgoing->name = name;
|
2009-01-20 12:12:41 +00:00
|
|
|
list_insert_tail(outgoing_list, outgoing);
|
2002-09-09 21:25:28 +00:00
|
|
|
setup_outgoing_connection(outgoing);
|
|
|
|
}
|
2002-02-18 16:25:19 +00:00
|
|
|
}
|