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5b237745
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Scott Ullrich
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#! /usr/local/bin/php -f
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<?php
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/*
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sshd - Modified to work on disk based system
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Copyright 2004 Scott K Ullrich
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b2981d7a
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Scott Ullrich
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5b237745
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Scott Ullrich
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Original Copyright (C) 2004 Fred Mol <fredmol@xs4all.nl>.
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All rights reserved.
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b2981d7a
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Scott Ullrich
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5b237745
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Scott Ullrich
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Redistribution and use in source and binary forms, with or without
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modification, are permitted provided that the following conditions are met:
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b2981d7a
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Scott Ullrich
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5b237745
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Scott Ullrich
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1. Redistributions of source code must retain the above copyright notice,
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this list of conditions and the following disclaimer.
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b2981d7a
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Scott Ullrich
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5b237745
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Scott Ullrich
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2. Redistributions in binary form must reproduce the above copyright
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notice, this list of conditions and the following disclaimer in the
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documentation and/or other materials provided with the distribution.
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b2981d7a
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Scott Ullrich
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5b237745
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Scott Ullrich
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THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES,
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INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY
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AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
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AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY,
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OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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POSSIBILITY OF SUCH DAMAGE.
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*/
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2257118f
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Scott Ullrich
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require_once("globals.inc");
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116852b8
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Scott Ullrich
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require_once("config.inc");
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7c6cef3c
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Scott Ullrich
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require_once("functions.inc");
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require_once("shaper.inc");
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116852b8
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Scott Ullrich
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if(isset($config['system']['enablesshd'])) {
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/* do nothing, we're enabled */
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} else {
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668b7b2e
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Scott Ullrich
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if($g['booting'])
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echo "SSHD is disabled.";
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b15e2ed4
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Scott Ullrich
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exit;
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668b7b2e
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Scott Ullrich
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}
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579946e2
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Scott Ullrich
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36fcc77f
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Scott Ullrich
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conf_mount_rw();
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116852b8
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Scott Ullrich
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function file_size($file) {
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$size = filesize($file);
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return $size;
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}
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746b5ee2
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Scott Ullrich
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5c3ccc0d
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Scott Ullrich
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/* restore ssh data for nanobsd platform */
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8fe7e3fc
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Scott Ullrich
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if($g['platform'] == "nanobsd" and file_exists("/conf/sshd/ssh_host_key")) {
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1d3bc939
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Scott Ullrich
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if(!file_exists("/etc/ssh/ssh_host_key.pub")) {
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d226535c
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Scott Ullrich
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echo "Restoring SSH from /conf/sshd/";
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56bff6a3
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Erik Fonnesbeck
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exec("/bin/cp -p /conf/sshd/* /etc/ssh/");
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/* make sure host private key permissions aren't too open so sshd won't complain */
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$files_to_check = array('ssh_host_dsa_key','ssh_host_key','ssh_host_rsa_key');
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foreach($files_to_check as $f2c) {
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if(file_exists("/etc/ssh/{$f2c}"))
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chmod("/etc/ssh/{$f2c}", 0600);
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}
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5c3ccc0d
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Scott Ullrich
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}
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}
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116852b8
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Scott Ullrich
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/* if any of these files are 0 bytes then they are corrupted.
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* remove them
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*/
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$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');
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foreach($files_to_check as $f2c) {
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if(file_exists("/etc/ssh/{$f2c}"))
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if(file_size("/etc/ssh/{$f2c}")==0) {
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e28f5b93
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jim-p
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mwexec("rm /etc/ssh/ssh_host*", true);
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116852b8
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Scott Ullrich
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}
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}
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if (!is_dir("/var/empty")) {
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/* make ssh home directory */
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5b237745
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Scott Ullrich
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mkdir("/var/empty", 0555);
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116852b8
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Scott Ullrich
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}
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5b237745
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Scott Ullrich
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56c0c91f
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Ermal Lu?i
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if(!file_exists("/var/log/lastlog")) {
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116852b8
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Scott Ullrich
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/* Login related files. */
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5b237745
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Scott Ullrich
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touch("/var/log/lastlog");
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116852b8
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Scott Ullrich
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}
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5b237745
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Scott Ullrich
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116852b8
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Scott Ullrich
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$sshConfigDir = "/etc/ssh";
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850b71ec
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Scott Ullrich
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116852b8
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Scott Ullrich
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if($config['system']['ssh']['port'] <> "") {
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$sshport = $config['system']['ssh']['port'];
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} else {
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$sshport = 22;
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}
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/* Include default configuration for pfSense */
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$sshconf = "# This file is automatically generated at startup\n";
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868a5b99
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Scott Ullrich
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$sshconf .= "Ciphers aes128-ctr,aes256-ctr,arcfour256,arcfour,aes128-cbc,aes256-cbc\n";
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116852b8
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Scott Ullrich
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$sshconf .= "PermitRootLogin yes\n";
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5b7eb87c
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Seth Mos
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$sshconf .= "Compression yes\n";
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$sshconf .= "ClientAliveInterval 30\n";
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$sshconf .= "UseDNS no\n";
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116852b8
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Scott Ullrich
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$sshconf .= "X11Forwarding no\n";
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56c91631
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Ermal
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if(isset($config['system']['ssh']['sshdkeyonly'])) {
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116852b8
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Scott Ullrich
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$sshconf .= "# Login via Key only\n";
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ed4b63b0
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Timo Boettcher
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$sshconf .= "PasswordAuthentication no\n";
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$sshconf .= "ChallengeResponseAuthentication no\n";
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$sshconf .= "PubkeyAuthentication yes\n";
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} else {
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116852b8
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Scott Ullrich
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$sshconf .= "# Login via Key and Password\n";
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ed4b63b0
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Timo Boettcher
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$sshconf .= "PasswordAuthentication yes\n";
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$sshconf .= "ChallengeResponseAuthentication yes\n";
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$sshconf .= "PubkeyAuthentication yes\n";
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}
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116852b8
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Scott Ullrich
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$sshconf .= "# override default of no subsystems\n";
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$sshconf .= "Subsystem sftp /usr/libexec/sftp-server\n";
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/* Only allow protocol 2, because we say so */
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$sshconf .= "Protocol 2\n";
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/* Run the server on another port if we have one defined */
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$sshconf .= "Port $sshport\n";
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5b7eb87c
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Seth Mos
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116852b8
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Scott Ullrich
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/* Write the new sshd config file */
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$fd = fopen("/etc/ssh/sshd_config", "w");
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5b7eb87c
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Seth Mos
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fwrite($fd, $sshconf);
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579946e2
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Scott Ullrich
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fclose($fd);
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5b7eb87c
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Seth Mos
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0f953a29
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Scott Ullrich
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/* mop up from a badly implemented ssh keys -> cf backup */
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426f300c
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Scott Ullrich
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if($config['ssh']['dsa_key'] <> "") {
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unset($config['ssh']['dsa_key']);
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unset($config['ssh']['rsa_key']);
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unset($config['ssh']['rsa1_key']);
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unset($config['ssh']['dsa']);
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unset($config['ssh']['rsa']);
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unset($config['ssh']['rsa1']);
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unset($config['ssh']['ak']);
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116852b8
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Scott Ullrich
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write_config("Clearing SSH keys from config.xml");
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426f300c
|
Scott Ullrich
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}
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579946e2
|
Scott Ullrich
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116852b8
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Scott Ullrich
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/* are we already running? if so exit */
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06e28ceb
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Ermal Lu?i
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if(is_subsystem_dirty('sshdkeys')) {
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36fcc77f
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Scott Ullrich
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conf_mount_ro();
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dcb64768
|
Scott Ullrich
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exit;
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36fcc77f
|
Scott Ullrich
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}
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2d402f57
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jim-p
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// Check for all needed key files. If any are missing, the keys need to be regenerated.
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| 146 |
4c4b068c
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jim-p
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$files_to_check = array('ssh_host_dsa_key','ssh_host_dsa_key.pub','ssh_host_key','ssh_host_key.pub','ssh_host_rsa_key','ssh_host_rsa_key.pub');
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2d402f57
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jim-p
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$generate_keys = false;
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foreach ($files_to_check as $f2c) {
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| 149 |
4c4b068c
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jim-p
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if (!file_exists("/etc/ssh/{$f2c}")) {
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2d402f57
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jim-p
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$generate_keys = true;
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}
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}
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if ($generate_keys) {
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116852b8
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Scott Ullrich
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/* remove previous keys and regen later */
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5b6eac01
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Scott Ullrich
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file_notice("SSH", "{$g['product_name']} has started creating your SSH keys. SSH Startup will be delayed. Please note that reloading the filter rules and changes will be delayed until this operation is completed.", "SSH KeyGen", "");
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e28f5b93
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jim-p
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mwexec("rm /etc/ssh/ssh_host_*", true);
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06e28ceb
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Ermal Lu?i
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mark_subsystem_dirty('sshdkeys');
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116852b8
|
Scott Ullrich
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echo " Generating Keys:\n";
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system("/usr/bin/nice -n20 /usr/bin/ssh-keygen -t rsa1 -N '' -f $sshConfigDir/ssh_host_key");
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system("/usr/bin/nice -n20 /usr/bin/ssh-keygen -t rsa -N '' -f $sshConfigDir/ssh_host_rsa_key");
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system("/usr/bin/nice -n20 /usr/bin/ssh-keygen -t dsa -N '' -f $sshConfigDir/ssh_host_dsa_key");
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06e28ceb
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Ermal Lu?i
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clear_subsystem_dirty('sshdkeys');
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5b6eac01
|
Scott Ullrich
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file_notice("SSH", "{$g['product_name']} has completed creating your SSH keys. SSH is now started.", "SSH Startup", "");
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116852b8
|
Scott Ullrich
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echo "Starting SSH... ";
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c2338828
|
Scott Ullrich
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}
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efa761f6
|
Scott Ullrich
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| 167 |
116852b8
|
Scott Ullrich
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/* kill existing sshd process, server only, not the childs */
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$sshd_pid = exec("ps ax | egrep '/usr/sbin/[s]shd' | awk '{print $1}'");
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if($sshd_pid <> "") {
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echo "stopping ssh process $sshd_pid \n";
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mwexec("kill $sshd_pid");
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5b7eb87c
|
Seth Mos
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}
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| 173 |
116852b8
|
Scott Ullrich
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/* Launch new server process */
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$status = mwexec("/usr/sbin/sshd");
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| 175 |
0f953a29
|
Scott Ullrich
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if($status <> 0) {
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| 176 |
fdfc687c
|
Scott Ullrich
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file_notice("sshd_startup", "SSHD failed to start.", "SSHD Daemon", "");
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| 177 |
116852b8
|
Scott Ullrich
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echo "error!\n";
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} else {
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echo "done.\n";
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| 180 |
0f953a29
|
Scott Ullrich
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}
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| 181 |
579946e2
|
Scott Ullrich
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| 182 |
43640486
|
Scott Ullrich
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// NanoBSD
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| 183 |
5c3ccc0d
|
Scott Ullrich
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if($g['platform'] == "nanobsd") {
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| 184 |
4c2fa5b5
|
Scott Ullrich
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if(!is_dir("/conf/sshd"))
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| 185 |
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exec("mkdir /conf/sshd");
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| 186 |
7a9ed301
|
Ermal
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exec("/bin/cp -p /etc/ssh/ssh_host* /conf/sshd");
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| 187 |
5c3ccc0d
|
Scott Ullrich
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}
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| 188 |
823b7b0f
|
Scott Ullrich
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conf_mount_ro();
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| 189 |
579946e2
|
Scott Ullrich
|
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| 190 |
06e28ceb
|
Ermal Lu?i
|
?>
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