2013-03-26 14:07:15 +00:00
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/*
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* Copyright (C) 2013 Martin Willi
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* Copyright (C) 2013 revosec AG
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License as published by the
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* Free Software Foundation; either version 2 of the License, or (at your
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* option) any later version. See <http://www.fsf.org/copyleft/gpl.txt>.
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*
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* This program is distributed in the hope that it will be useful, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
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* or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* for more details.
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*/
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#include "cmd_connection.h"
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#include <signal.h>
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#include <unistd.h>
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#include <utils/debug.h>
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#include <processing/jobs/callback_job.h>
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#include <daemon.h>
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typedef struct private_cmd_connection_t private_cmd_connection_t;
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/**
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* Private data of an cmd_connection_t object.
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*/
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struct private_cmd_connection_t {
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/**
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* Public cmd_connection_t interface.
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*/
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cmd_connection_t public;
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/**
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* Process ID to terminate on failure
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*/
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pid_t pid;
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/**
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* Hostname to connect to
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*/
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char *host;
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/**
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* Local identity
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*/
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char *identity;
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};
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/**
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* Shut down application
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*/
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static void terminate(private_cmd_connection_t *this)
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{
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kill(this->pid, SIGUSR1);
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}
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/**
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* Create peer config with associated ike config
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*/
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static peer_cfg_t* create_peer_cfg(private_cmd_connection_t *this)
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{
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ike_cfg_t *ike_cfg;
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peer_cfg_t *peer_cfg;
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2013-03-26 16:28:40 +00:00
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u_int16_t local_port, remote_port = IKEV2_UDP_PORT;
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2013-03-26 14:07:15 +00:00
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2013-03-26 16:28:40 +00:00
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local_port = charon->socket->get_port(charon->socket, FALSE);
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if (local_port != IKEV2_UDP_PORT)
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{
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remote_port = IKEV2_NATT_PORT;
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}
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ike_cfg = ike_cfg_create(IKEV2, TRUE, FALSE, "0.0.0.0", FALSE, local_port,
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this->host, FALSE, remote_port, FRAGMENTATION_NO, 0);
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2013-03-26 14:07:15 +00:00
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ike_cfg->add_proposal(ike_cfg, proposal_create_default(PROTO_IKE));
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peer_cfg = peer_cfg_create("cmd", ike_cfg,
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CERT_SEND_IF_ASKED, UNIQUE_REPLACE, 1, /* keyingtries */
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36000, 0, /* rekey 10h, reauth none */
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600, 600, /* jitter, over 10min */
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TRUE, FALSE, /* mobike, aggressive */
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30, 0, /* DPD delay, timeout */
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FALSE, NULL, NULL); /* mediation */
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peer_cfg->add_virtual_ip(peer_cfg, host_create_from_string("0.0.0.0", 0));
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return peer_cfg;
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}
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/**
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* Attach authentication configs to peer config
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*/
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static void add_auth_cfgs(private_cmd_connection_t *this, peer_cfg_t *peer_cfg)
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{
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auth_cfg_t *auth;
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auth = auth_cfg_create();
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auth->add(auth, AUTH_RULE_AUTH_CLASS, AUTH_CLASS_PUBKEY);
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auth->add(auth, AUTH_RULE_IDENTITY,
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identification_create_from_string(this->identity));
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peer_cfg->add_auth_cfg(peer_cfg, auth, TRUE);
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auth = auth_cfg_create();
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auth->add(auth, AUTH_RULE_IDENTITY,
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identification_create_from_string(this->host));
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peer_cfg->add_auth_cfg(peer_cfg, auth, FALSE);
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}
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/**
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* Attach child config to peer config
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*/
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static child_cfg_t* create_child_cfg(private_cmd_connection_t *this)
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{
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child_cfg_t *child_cfg;
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traffic_selector_t *ts;
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lifetime_cfg_t lifetime = {
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.time = {
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.life = 10800 /* 3h */,
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.rekey = 10200 /* 2h50min */,
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.jitter = 300 /* 5min */
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}
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};
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child_cfg = child_cfg_create("cmd", &lifetime,
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NULL, FALSE, MODE_TUNNEL, /* updown, hostaccess */
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ACTION_NONE, ACTION_NONE, ACTION_NONE, FALSE,
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0, 0, NULL, NULL, 0);
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child_cfg->add_proposal(child_cfg, proposal_create_default(PROTO_ESP));
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ts = traffic_selector_create_dynamic(0, 0, 65535);
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child_cfg->add_traffic_selector(child_cfg, TRUE, ts);
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ts = traffic_selector_create_from_string(0, TS_IPV4_ADDR_RANGE,
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"0.0.0.0", 0, "255.255.255.255", 65535);
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child_cfg->add_traffic_selector(child_cfg, FALSE, ts);
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return child_cfg;
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}
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/**
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* Initiate the configured connection
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*/
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static job_requeue_t initiate(private_cmd_connection_t *this)
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{
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peer_cfg_t *peer_cfg;
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child_cfg_t *child_cfg;
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if (!this->host)
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{
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DBG1(DBG_CFG, "unable to initiate, missing --host option");
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terminate(this);
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return JOB_REQUEUE_NONE;
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}
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if (!this->identity)
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{
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DBG1(DBG_CFG, "unable to initiate, missing --identity option");
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terminate(this);
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return JOB_REQUEUE_NONE;
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}
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peer_cfg = create_peer_cfg(this);
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add_auth_cfgs(this, peer_cfg);
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child_cfg = create_child_cfg(this);
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peer_cfg->add_child_cfg(peer_cfg, child_cfg->get_ref(child_cfg));
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if (charon->controller->initiate(charon->controller, peer_cfg, child_cfg,
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controller_cb_empty, NULL, 0) != SUCCESS)
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{
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terminate(this);
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}
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return JOB_REQUEUE_NONE;
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}
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METHOD(cmd_connection_t, handle, bool,
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private_cmd_connection_t *this, cmd_option_type_t opt, char *arg)
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{
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switch (opt)
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{
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case CMD_OPT_HOST:
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this->host = arg;
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break;
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case CMD_OPT_IDENTITY:
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this->identity = arg;
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break;
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default:
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return FALSE;
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}
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return TRUE;
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}
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METHOD(cmd_connection_t, destroy, void,
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private_cmd_connection_t *this)
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{
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free(this);
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}
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/**
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* See header
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*/
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cmd_connection_t *cmd_connection_create()
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{
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private_cmd_connection_t *this;
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INIT(this,
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.public = {
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.handle = _handle,
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.destroy = _destroy,
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},
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.pid = getpid(),
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);
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/* queue job, gets initiated as soon as we are up and running */
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lib->processor->queue_job(lib->processor,
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(job_t*)callback_job_create_with_prio(
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(callback_job_cb_t)initiate, this, NULL,
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(callback_job_cancel_t)return_false, JOB_PRIO_CRITICAL));
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return &this->public;
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}
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