pfSense

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

<?php

/*

 * pfSsh

 *

 * part of pfSense (https://www.pfsense.org)

 * Copyright (c) 2004-2016 Rubicon Communications, LLC (Netgate)

 * All rights reserved.

 *

 * Licensed under the Apache License, Version 2.0 (the "License");

 * you may not use this file except in compliance with the License.

 * You may obtain a copy of the License at

 *

 * http://www.apache.org/licenses/LICENSE-2.0

 *

 * Unless required by applicable law or agreed to in writing, software

 * distributed under the License is distributed on an "AS IS" BASIS,

 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.

 * See the License for the specific language governing permissions and

 * limitations under the License.

 */

require_once("globals.inc");

if ($argc < 2) {

	echo "Starting the {$g['product_name']} developer shell";

}

require_once("functions.inc");

if ($argc < 2) {

	echo ".";

}

require_once("config.inc");

if ($argc < 2) {

	echo ".";

}

require_once("util.inc");

if ($argc < 2) {

	echo ".";

}

$shell_cmds = array("alias", "alloc", "bg", "bind", "bindkey", "break",

	 "breaksw", "builtins", "case", "cd", "chdir", "command", "complete", "continue", "default",

	 "dirs", "do", "done", "echo", "echotc", "elif", "else", "end", "endif", "endsw", "esac", "eval",

	 "exec", "exit", "export", "false", "fc", "fg", "filetest", "fi", "for", "foreach", "getopts",

	 "glob", "goto", "hash", "hashstat", "history", "hup", "if", "jobid", "jobs", "kill", "limit",

	 "local", "log", "login", "logout", "ls-F", "nice", "nohup", "notify", "onintr", "popd",

	 "printenv", "pushd", "pwd", "read", "readonly", "rehash", "repeat", "return", "sched", "set",

	 "setenv", "settc", "setty", "setvar", "shift", "source", "stop", "suspend", "switch",

	 "telltc", "test", "then", "time", "trap", "true", "type", "ulimit", "umask", "unalias",

	 "uncomplete", "unhash", "unlimit", "unset", "unsetenv", "until", "wait", "where", "which",

	 "while");

function pipe_cmd($command, $text_to_pipe) {

	$descriptorspec = array(

		0 => array("pipe", "r"),  // stdin

		1 => array("pipe", "w"),  // stdout

		2 => array("pipe", "w")); // stderr ?? instead of a file

	$fd = proc_open("$command", $descriptorspec, $pipes);

	if (is_resource($fd)) {

		fwrite($pipes[0], "{$text_to_pipe}");

		fclose($pipes[0]);

		while ($s= fgets($pipes[1], 1024)) {

			// read from the pipe

			$buffer .= $s;

		}

		fclose($pipes[1]);

		fclose($pipes[2]);

	}

	return $buffer;

}

if (!function_exists("readline")) {

	function readline() {

		$fp = fopen('php://stdin', 'r');

		$textinput = chop(fgets($fp));

		fclose($fp);

		return $textinput;

	}

}

function more($text, $count=24) {

	$counter=0;

	$lines = explode("\n", $text);

	foreach ($lines as $line) {

		if ($counter > $count) {

			echo "Press RETURN to continue ...";

			$fp = fopen('php://stdin', 'r');

			$pressreturn = chop(fgets($fp));

			if ($pressreturn == "q" || $pressreturn == "quit") {

				return;

			}

			fclose($fp);

			$counter = 0;

		}

		echo "{$line}\n";

		$counter++;

	}

}

function show_help() {

$show_help_text = <<<EOF

	Enter a series of commands and then execute the set with "exec".

	For example:

	echo "foo"; // php command

	echo "foo2"; // php command

	! echo "heh" # shell command

	exec

	Example commands:

	record <recordingfilename>

	stoprecording

	showrecordings

	parse_config(true);  # reloads the \$config array

	\$temp = print_r(\$config, true);

	more(\$temp);

	/* to output a configuration array */

	print_r(\$config);

	/* to output the interfaces configuration portion of config.xml */

	print_r(\$config['interfaces']);

	/* to output the dhcp server configuration */

	print_r(\$config['dhcpd']);

	/* to exit the {$g['product_name']} developer shell */

	exit

	/* to output supported wireless modes for an interface */

	print_r(get_wireless_modes(\"ath0\"));

	/* to enable SSH */

	\$config['system']['enablesshd'] = true;

	/* change OPTX to the OPT interface name such as BACKHAUL */

	\$config['interfaces']['optx']['wireless']['standard'] = "11a";

	\$config['interfaces']['optx']['wireless']['mode'] = "hostap";

	\$config['interfaces']['optx']['wireless']['channel'] = "6";

	/* to enable dhcp server for an optx interface */

	\$config['dhcpd']['optx']['enable'] = true;

	\$config['dhcpd']['optx']['range']['from'] = "192.168.31.100";

	\$config['dhcpd']['optx']['range']['to'] = "192.168.31.150";

	/* to disable the firewall filter */

	\$config['system']['disablefilter'] = true;

	/* to enable an interface and configure it as a DHCP client */

	\$config['interfaces']['optx']['disabled'] = false;

	\$config['interfaces']['optx']['ipaddr'] = "dhcp";

	/* to enable an interface and set a static IPv4 address */

	\$config['interfaces']['wan']['enable'] = true;

	\$config['interfaces']['wan']['ipaddr'] = "192.168.100.1";

	\$config['interfaces']['wan']['subnet'] = "24";

	/* to save out the new configuration (config.xml) */

	write_config();

	/* to reboot the system after saving */

	system_reboot_sync();

EOF;

	more($show_help_text);

}

$fp = fopen('php://stdin', 'r');

if ($argc < 2) {

	echo ".\n\n";

}

$pkg_interface='console';

$shell_active = true;

$tccommands = array();

function completion($string, $index) {

	global $tccommands;

	return $tccommands;

}

readline_completion_function("completion");

function get_playback_files() {

	$playback_files = array();

	$files = scandir("/etc/phpshellsessions/");

	foreach ($files as $file) {

		if ($file <> "." && $file <> "..") {

			$playback_files[] = $file;

		}

	}

	return $playback_files;

}

if ($argc < 2) {

	echo "Welcome to the {$g['product_name']} developer shell\n";

	echo "\nType \"help\" to show common usage scenarios.\n";

	echo "\nAvailable playback commands:\n     ";

	$tccommands[] = "playback";

	$playback_files = get_playback_files();

	foreach ($playback_files as $pbf) {

		echo "{$pbf} ";

		if (function_exists("readline_add_history")) {

			readline_add_history("playback $pbf");

			$tccommands[] = "$pbf";

		}

	}

	echo "\n\n";

}

$recording = false;

$playback_file_split = array();

$playbackbuffer = "";

if ($argv[1]=="playback" or $argv[1]=="run") {

	if (empty($argv[2]) || !file_exists("/etc/phpshellsessions/" . basename($argv[2]))) {

		echo "Error: Invalid playback file specified.\n\n";

		show_recordings();

		exit(-1);

	}

	playback_file(basename($argv[2]));

	exit;

}

// Define more commands

$tccommands[] = "exit";

$tccommands[] = "quit";

$tccommands[] = "?";

$tccommands[] = "exec";

$tccommands[] = "stoprecording";

$tccommands[] = "showrecordings";

$tccommands[] = "record";

$tccommands[] = "reset";

$tccommands[] = "master";

$tccommands[] = "RELENG_1_2";

while ($shell_active == true) {

	$command = readline("{$g['product_name']} shell: ");

	readline_add_history($command);

	$command_split = explode(" ", $command);

	$first_command = $command_split[0];

	if ($first_command == "playback" || $first_command == "run") {

		$playback_file = $command_split[1];

		if (!$playback_file || !file_exists("/etc/phpshellsessions/{$playback_file}")) {

			$command = "";

			echo "Could not locate playback file.\n";

		} else {

			$command = "";

			echo "\nPlayback of file {$command_split[1]} started.\n\n";

			playback_file("{$playback_file}");

			continue;

		}

	}

	if ($first_command == "exit" or $first_command == "quit") {

		die;

	}

	if ($first_command == "help" or $first_command == "?") {

		show_help();

		$playbackbuffer = "";

		continue;

	}

	if ($first_command == "exec" or $first_command == "exec;") {

		playback_text($playbackbuffer);

		$playbackbuffer = "";

		continue;

	}

	if ($first_command == "stoprecording" || $first_command == "stoprecord" || $first_command == "stop") {

		if ($recording) {

			fwrite($recording_fd, $playbackbuffer);

			fclose($recording_fd);

			$command = "";

			echo "Recording stopped.\n";

			$recording = false;

		} else {

			echo "No recording session in progress.\n";

			$command = "";

		}

	}

	if ($first_command == "showrecordings") {

		show_recordings();

		$command = "";

	}

	if ($first_command == "reset") {

		$playbackbuffer = "";

		echo "\nBuffer reset.\n\n";

		continue;

	}

	if ($first_command == "record") {

		if (!$command_split[1]) {

			echo "usage: record playbackname\n";

			echo "\tplaybackname will be created in /etc/phpshellsessions.\n";

			$command = "";

		} else {

			/* time to record */

			safe_mkdir("/etc/phpshellsessions");

			$recording_fn = basename($command_split[1]);

			$recording_fd = fopen("/etc/phpshellsessions/{$recording_fn}","w");

			if (!$recording_fd) {

				echo "Could not start recording session.\n";

				$command = "";

			} else {

				$recording = true;

				echo "Recording of {$recording_fn} started.\n";

				$command = "";

			}

		}

	}

	$playbackbuffer .= $command . "\n";

}

function show_recordings() {

	echo "==> Sessions available for playback are:\n";

	$playback_files = get_playback_files();

	foreach (get_playback_files() as $pbf) {

		echo "{$pbf} ";

	}

	echo "\n\n";

	echo "==> end of list.\n";

}

function returnlastchar($command) {

	$commandlen = strlen($command);

	$endofstring = substr($command, ($commandlen-1));

	return $endofstring;

}

function returnfirstchar($command) {

	$commandlen = strlen($command);

	$endofstring = substr($command, 0, 1);

	return $endofstring;

}

function str_replace_all($search,$replace,$subject) {

	while (strpos($subject,$search)!==false) {

		$subject = str_replace($search,$replace,$subject);

	}

	return $subject;

}

function playback_text($playback_file_contents) {

	$playback_file_split = explode("\n", $playback_file_contents);

	$playback_text  = "require_once('functions.inc');\n";

	$playback_text .= "require_once('globals.inc');\n";

	$playback_text .= "require_once('config.inc');\n";

	$toquote = '"';

	$toquotereplace = '\\"';

	foreach ($playback_file_split as $pfs) {

		$firstchar = returnfirstchar($pfs);

		$currentline = $pfs;

		if ($firstchar == "!") {

			/* XXX: encode " in $pfs */

			$pfsa = str_replace($toquote, $toquotereplace, $currentline);

			$playback_text .= str_replace("!", "system(\"", $pfsa) . "\");\n";

		} else if ($firstchar == "=") {

			/* XXX: encode " in $pfs */

			$pfsa = str_replace($toquote, $toquotereplace, $currentline);

			$currentline   .= str_replace("!", "system(\"", $pfsa) . "\");\n";

		} else {

			$playback_text .= $pfs . "\n";

		}

	}

	global $config;

	eval($playback_text);

}

function playback_file($playback_file) {

	$playback_file_contents = file_get_contents("/etc/phpshellsessions/{$playback_file}");

	playback_text($playback_file_contents);

}

?>