pfSense

#! /usr/local/bin/php -f

<?php

/*

	sshd - Modified to work on disk based system

	Copyright 2004 Scott K Ullrich

	All rights reserved.

	modification, are permitted provided that the following conditions are met:

	   this list of conditions and the following disclaimer.

	   notice, this list of conditions and the following disclaimer in the

	   documentation and/or other materials provided with the distribution.

	INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY

	AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE

	AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY,

	OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF

	SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS

	INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN

	CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)

	ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE

	POSSIBILITY OF SUCH DAMAGE.

*/

	require_once("notices.inc");

		/* do nothing, we're enabled */

	} else {

			echo "SSHD is disabled.";

	  $size = filesize($file);

	  return $size;

	}

	 *    remove them

	 */

	$files_to_check = array('ssh_host_dsa_key','ssh_host_dsa_key.pub','ssh_host_key','ssh_host_key.pub','ssh_host_rsa_key','ssh_host_rsa_key.pub','/root/.ssh/authorized_keys');

	foreach($files_to_check as $f2c) {

		if(file_exists("/etc/ssh/{$f2c}"))

			if(file_size("/etc/ssh/{$f2c}")==0) {

				mwexec("rm /etc/ssh/ssh_host*");

			}

	}

	if (!is_dir("/var/empty")) {

		/* make ssh home directory */

		/* Login related files. */

		$sshport = $config['system']['ssh']['port'];

	} else {

		$sshport = 22;

	}

	/* Include default configuration for pfSense */

	$sshconf = "# This file is automatically generated at startup\n";

	$sshconf .= "ClientAliveInterval 30\n";

	$sshconf .= "UseDNS no\n";

	if($config['system']['ssh']['sshdkeyonly'] <> "") {

		$sshconf .= "# Login via Key only\n";

		$sshconf .= "ChallengeResponseAuthentication no\n";

		$sshconf .= "PubkeyAuthentication yes\n";

	} else {

		$sshconf .= "ChallengeResponseAuthentication yes\n";

		$sshconf .= "PubkeyAuthentication yes\n";

	}

	$sshconf .= "Subsystem       sftp    /usr/libexec/sftp-server\n";

	/* Only allow protocol 2, because we say so */

	$sshconf .= "Protocol 2\n";

	/* Run the server on another port if we have one defined */

	$sshconf .= "Port $sshport\n";

	$fd = fopen("/etc/ssh/sshd_config", "w");

		echo "writing /root/.ssh/authorized_keys\n";

		if (!is_dir("/root/.ssh")) {

			mkdir('/root/.ssh', 0700);

		}

		$authorizedkeys  = "# This file is automatically generated at startup\n";

		$authorizedkeys .= base64_decode($config['system']['ssh']['authorizedkeys']);

		$fd = fopen("/root/.ssh/authorized_keys", "w");

		fwrite($fd, $authorizedkeys);

		pclose($fd);

		chmod("/root/.ssh/authorized_keys",0644);

		if(file_exists("/root/.ssh/authorized_keys")) {

			unlink("/root/.ssh/authorized_keys");

		}

		unset($config['ssh']['dsa_key']);

		unset($config['ssh']['rsa_key']);

		unset($config['ssh']['rsa1_key']);

		unset($config['ssh']['dsa']);

		unset($config['ssh']['rsa']);

		unset($config['ssh']['rsa1']);

		unset($config['ssh']['ak']);

		conf_mount_ro();

		/* remove previous keys and regen later */

		system("/usr/bin/nice -n20 /usr/bin/ssh-keygen -t rsa1 -N '' -f $sshConfigDir/ssh_host_key");

		system("/usr/bin/nice -n20 /usr/bin/ssh-keygen -t rsa -N '' -f $sshConfigDir/ssh_host_rsa_key");

		system("/usr/bin/nice -n20 /usr/bin/ssh-keygen -t dsa -N '' -f $sshConfigDir/ssh_host_dsa_key");

	$sshd_pid = exec("ps ax | egrep '/usr/sbin/[s]shd' | awk '{print $1}'");

	if($sshd_pid <> "") {

		echo "stopping ssh process $sshd_pid \n";

		mwexec("kill $sshd_pid");

	$status = mwexec("/usr/sbin/sshd");

	} else {

		echo "done.\n";

	if(file_exists("/root/save_sshkeys"))

		exec("/root/save_sshkeys");