File: //opt/librepanel_corrupt/lib/Froxlor/Config/ConfigDaemon.php
<?php
/**
* This file is part of the LibrePanel project.
* Copyright (c) 2010 the LibrePanel Team (see authors).
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version 2
* of the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, you can also view it online at
* https://files.librepanel.org/misc/COPYING.txt
*
* @copyright the authors
* @author LibrePanel team <team@librepanel.org>
* @license https://files.librepanel.org/misc/COPYING.txt GPLv2
*/
namespace LibrePanel\Config;
use Exception;
use LibrePanel\LibrePanel;
use LibrePanel\Settings;
use SimpleXMLElement;
/**
* Class ConfigDaemon
*
* Parses a distributions XML - file and gives access to the configuration
* Not to be used directly
*/
class ConfigDaemon
{
/**
* Human - readable title of this service
*
* @var string
*/
public $title;
/**
* Whether this is the default daemon of the service-category
*
* @var boolean
*/
public $default;
/**
* Holding the commands for this daemon
*
* @var array
*/
private $orders = [];
/**
* Store the parsed SimpleXMLElement for usage
*
* @var SimpleXMLElement
*/
private $fullxml;
/**
* Memorize if we already parsed the XML
*
* @var bool
*/
private $isparsed = false;
/**
* Sub - area of the full - XML only holding the daemon - data we are interested in
*
* @var SimpleXMLElement
*/
private $daemon;
/**
* xpath leading to this daemon in the full XML
*
* @var string
*/
private $xpath;
/**
* cache of sql-data if used
*/
private $sqldata_cache = null;
public function __construct($xml, $xpath)
{
$this->fullxml = $xml;
$this->xpath = $xpath;
$this->daemon = $this->fullxml->xpath($this->xpath);
if (count($this->daemon) !== 1) {
throw new Exception('XPath "' . $this->xpath . '" didn\'t return exactly one element');
}
$attributes = $this->daemon[0]->attributes();
if ($attributes['title'] != '') {
$this->title = $this->parseContent((string)$attributes['title']);
}
if (isset($attributes['default'])) {
$this->default = ($attributes['default'] == true);
}
}
/**
* Replace placeholders with content
*
* @param string $content
* @return string $content w/o placeholder
*/
private function parseContent($content)
{
$content = preg_replace_callback('/\{\{(.*)\}\}/Ui', function ($matches) {
$match = null;
if (preg_match('/^settings\.(.*)$/', $matches[1], $match)) {
return Settings::Get($match[1]);
} elseif (preg_match('/^lng\.(.*)(?:\.(.*)(?:\.(.*)))$/U', $matches[1], $match)) {
if (isset($match[1]) && $match[1] != '' && isset($match[2]) && $match[2] != '' && isset($match[3]) && $match[3] != '') {
return lng($match[1] . '.' . $match[2] . '.' . $match[3]);
} elseif (isset($match[1]) && $match[1] != '' && isset($match[2]) && $match[2] != '') {
return lng($match[1] . '.' . $match[2]);
} elseif (isset($match[1]) && $match[1] != '') {
return lng($match[1]);
}
return '';
} elseif (preg_match('/^const\.(.*)$/', $matches[1], $match)) {
return $this->returnDynamic($match[1]);
} elseif (preg_match('/^sql\.(.*)$/', $matches[1], $match)) {
if (is_null($this->sqldata_cache)) {
// read in sql-data (if exists)
if (file_exists(LibrePanel::getInstallDir() . "/lib/userdata.inc.php")) {
$sql = [];
$sql_root = [];
require LibrePanel::getInstallDir() . "/lib/userdata.inc.php";
unset($sql_root);
$this->sqldata_cache = $sql;
}
}
return isset($this->sqldata_cache[$match[1]]) ? $this->sqldata_cache[$match[1]] : '';
}
}, $content);
return $content;
}
private function returnDynamic($key = null)
{
$dynamics = [
'install_dir' => LibrePanel::getInstallDir()
];
return $dynamics[$key] ?? '';
}
/**
* Get config for this daemon
*
* The returned array will be an array of array, each sub-array looking like this:
* array('type' => 'install|file|command', 'content' => '<TEXT>')
* If the type is "file", an additional "name" - element will be added to the array
* To configure a daemon, the steps in the array must be followed in order
*
* @return array
*/
public function getConfig()
{
$this->parse();
return $this->orders;
}
/**
* Parse the XML and populate $this->orders
*
* @return bool
*/
private function parse()
{
// We only want to parse the stuff one time
if ($this->isparsed == true) {
return true;
}
$preparsed = [];
// First: let's push everything into an array and expand all includes
foreach ($this->daemon[0]->children() as $order) {
switch ((string)$order->getName()) {
case "install":
case "file":
case "command":
// Normal stuff, just add it to the preparsed - array
$preparsed[] = $order;
break;
case "include":
// Includes, get the part we want via xpath
$includes = $this->fullxml->xpath((string)$order);
foreach ($includes[0] as $include) {
// The "include" is also a child, so just skip it, would make a mess later
if ((string)$include->getName() == 'include') {
continue;
}
$preparsed[] = $include;
}
break;
// The next 3 are groupings, <visibility> MUST come first in this to work properly
case "commands":
case "files":
case "installs":
// Hold the results
$visibility = 1;
foreach ($order->children() as $child) {
switch ((string)$child->getName()) {
case "visibility":
$visibility += $this->checkVisibility($child);
break;
case "install":
case "file":
case "command":
if ($visibility > 0) {
$preparsed[] = $child;
}
break;
case "include":
// Includes, get the part we want via xpath
$includes = $this->fullxml->xpath((string)$child);
foreach ($includes[0] as $include) {
// The "include" is also a child, so just skip it, would make a mess later
if ((string)$include->getName() == 'include') {
continue;
}
$preparsed[] = $include;
}
break;
}
}
break;
}
}
// Go through every preparsed order and evaluate what should happen to it
foreach ($preparsed as $order) {
$parsedorder = $this->parseOrder($order);
// We got an array (= valid order) and the array already has a type -> add to stack
if (is_array($parsedorder) && array_key_exists('type', $parsedorder)) {
$this->orders[] = $parsedorder;
// We got an array, but no type, means we got multiple orders back, at them to the stack one at a time
} elseif (is_array($parsedorder)) {
foreach ($parsedorder as $neworder) {
$this->orders[] = $neworder;
}
}
}
// Switch flag to indicate we parsed our data
$this->isparsed = true;
return true;
}
/**
* Check if visibility should be changed
*
* @param SimpleXMLElement $order
* @return int 0|-1
*/
private function checkVisibility($order)
{
$attributes = [];
foreach ($order->attributes() as $key => $value) {
$attributes[(string)$key] = $this->parseContent(trim((string)$value));
}
$order = $this->parseContent(trim((string)$order));
if (!array_key_exists('mode', $attributes)) {
throw new Exception('"<visibility>' . $order . '</visibility>" is missing mode');
}
$return = 0;
switch ($attributes['mode']) {
case "isfile":
if (!is_file($order)) {
$return = -1;
}
break;
case "notisfile":
if (is_file($order)) {
$return = -1;
}
break;
case "isdir":
if (!is_dir($order)) {
$return = -1;
}
break;
case "notisdir":
if (is_dir($order)) {
$return = -1;
}
break;
case "false":
if ($order == true) {
$return = -1;
}
break;
case "true":
if ($order == false) {
$return = -1;
}
break;
case "notempty":
if ($order == "") {
$return = -1;
}
break;
case "userexists":
if (posix_getpwuid($order) === false) {
$return = -1;
}
break;
case "groupexists":
if (posix_getgrgid($order) === false) {
$return = -1;
}
break;
case "usernotexists":
if (is_array(posix_getpwuid($order))) {
$return = -1;
}
break;
case "groupnotexists":
if (is_array(posix_getgrgid($order))) {
$return = -1;
}
break;
case "usernamenotexists":
if (is_array(posix_getpwnam($order))) {
$return = -1;
}
break;
case "equals":
$return = (isset($attributes['value']) && $attributes['value'] == $order ? 0 : -1);
break;
}
return $return;
}
/**
* Parse a single order and return it in a format for easier usage
*
* @param
* SimpleXMLElement object holding a single order from the distribution - XML
* @return array|string
*/
private function parseOrder($order)
{
$attributes = [];
foreach ($order->attributes() as $key => $value) {
$attributes[(string)$key] = (string)$value;
}
$parsedorder = '';
switch ((string)$order->getName()) {
case "file":
$parsedorder = $this->parseFile($order, $attributes);
break;
case "command":
$parsedorder = $this->parseCommand($order, $attributes);
break;
case "install":
$parsedorder = $this->parseInstall($order, $attributes);
break;
default:
throw new Exception('Invalid order: ' . (string)$order->getName());
}
return $parsedorder;
}
/**
* Parse a file - order and return it in a format for easier usage
*
* @param
* SimpleXMLElement object holding a single file from the distribution - XML
* @return array|string
*/
private function parseFile($order, $attributes)
{
$visibility = 1;
// No sub - elements, so the content can be returned directly
if ($order->count() == 0) {
$content = (string)$order;
} else {
// Hold the results
foreach ($order->children() as $child) {
switch ((string)$child->getName()) {
case "visibility":
$visibility += $this->checkVisibility($child);
break;
case "content":
$content = (string)$child;
break;
}
}
}
$return = [];
// Check if the original file should be backupped
// @TODO: Maybe have a backup - location somewhere central?
// @TODO: Use IO - class
if (array_key_exists('backup', $attributes)) {
if (array_key_exists('mode', $attributes) && $attributes['mode'] == 'append') {
$cmd = 'cp';
} else {
$cmd = 'mv';
}
$return[] = [
'type' => 'command',
'content' => '[ -f ' . $this->parseContent($attributes['name']) . ' ] && ' . $cmd . ' "' . $this->parseContent($attributes['name']) . '" "' . $this->parseContent($attributes['name']) . '.frx.bak"',
'execute' => "pre"
];
}
// Now the content of the file can be written
if (isset($attributes['mode'])) {
$return[] = [
'type' => 'file',
'content' => $this->parseContent($content),
'name' => $this->parseContent($attributes['name']),
'mode' => $this->parseContent($attributes['mode'])
];
} else {
$return[] = [
'type' => 'file',
'content' => $this->parseContent($content),
'name' => $this->parseContent($attributes['name'])
];
}
// Let's check if the mode of the file should be changed
if (array_key_exists('chmod', $attributes)) {
$return[] = [
'type' => 'command',
'content' => 'chmod ' . $attributes['chmod'] . ' "' . $this->parseContent($attributes['name']) . '"',
'execute' => "post"
];
}
// Let's check if the owner of the file should be changed
if (array_key_exists('chown', $attributes)) {
$return[] = [
'type' => 'command',
'content' => 'chown ' . $attributes['chown'] . ' "' . $this->parseContent($attributes['name']) . '"',
'execute' => "post"
];
}
// If we have more than 1 element, we want to group this stuff for easier processing later
if (count($return) > 1) {
$return = [
'type' => 'file',
'subcommands' => $return,
'name' => $this->parseContent($attributes['name'])
];
}
if ($visibility > 0) {
return $return;
} else {
return '';
}
}
/**
* Parse a command - order and return it in a format for easier usage
*
* @param
* SimpleXMLElement object holding a single command from the distribution - XML
* @return array|string
*/
private function parseCommand($order, $attributes)
{
// No sub - elements, so the content can be returned directly
if ($order->count() == 0) {
return [
'type' => 'command',
'content' => $this->parseContent(trim((string)$order))
];
}
// Hold the results
$visibility = 1;
$content = '';
foreach ($order->children() as $child) {
switch ((string)$child->getName()) {
case "visibility":
$visibility += $this->checkVisibility($child);
break;
case "content":
$content = trim((string)$child);
break;
}
}
if ($visibility > 0) {
return [
'type' => 'command',
'content' => $this->parseContent($content)
];
} else {
return '';
}
}
/**
* Parse a install - order and return it in a format for easier usage
*
* @param
* SimpleXMLElement object holding a single install from the distribution - XML
* @return array|string
*/
private function parseInstall($order, $attributes)
{
// No sub - elements, so the content can be returned directly
if ($order->count() == 0) {
return [
'type' => 'install',
'content' => $this->parseContent(trim((string)$order))
];
}
// Hold the results
$visibility = 1;
$content = '';
foreach ($order->children() as $child) {
switch ((string)$child->getName()) {
case "visibility":
$visibility += $this->checkVisibility($child);
break;
case "content":
$content = trim((string)$child);
break;
}
}
if ($visibility > 0) {
return [
'type' => 'install',
'content' => $this->parseContent($content)
];
} else {
return '';
}
}
}