<?php
/**
 * DMRaid Plugin
 *
 * PHP version 5
 *
 * @category  PHP
 * @package   PSI_Plugin_DMRaid
 * @author    Michael Cramer <BigMichi1@users.sourceforge.net>
 * @copyright 2009 phpSysInfo
 * @license   http://opensource.org/licenses/gpl-2.0.php GNU General Public License
 * @version   SVN: $Id: class.dmraid.inc.php 661 2012-08-27 11:26:39Z namiltd $
 * @link      http://phpsysinfo.sourceforge.net
 */
 /**
 * dmraid Plugin, which displays software RAID status
 *
 * @category  PHP
 * @package   PSI_Plugin_DMRaid
 * @author    Michael Cramer <BigMichi1@users.sourceforge.net>
 * @copyright 2009 phpSysInfo
 * @license   http://opensource.org/licenses/gpl-2.0.php GNU General Public License
 * @version   Release: 3.0
 * @link      http://phpsysinfo.sourceforge.net
 */
class DMRaid extends PSI_Plugin
{
	/**
	 * variable, which holds the content of the command
	 * @var array
	 */
	private $_filecontent = "";

	/**
	 * variable, which holds the result before the xml is generated out of this array
	 * @var array
	 */
	private $_result = array();

	/**
	 * read the data into an internal array and also call the parent constructor
	 *
	 * @param String $enc encoding
	 */
	public function __construct($enc)
	{
		$buffer = "";
		parent::__construct(__CLASS__, $enc);
		switch (strtolower(PSI_PLUGIN_DMRAID_ACCESS)) {
			case 'command':
				CommonFunctions::executeProgram("dmraid", "-s -vv 2>&1", $buffer);
			break;
			case 'data':
				CommonFunctions::rfts(APP_ROOT."/data/dmraid.txt", $buffer);
			break;
			default:
				$this->global_error->addConfigError("__construct()", "PSI_PLUGIN_DMRAID_ACCESS");
			break;
		}
		if (trim($buffer) != "") {
			$this->_filecontent = preg_split("/(\r?\n\*\*\* )|(\r?\n--> )/", $buffer, -1, PREG_SPLIT_NO_EMPTY);
		} else {
			$this->_filecontent = array();
		}
	}

	/**
	 * doing all tasks to get the required informations that the plugin needs
	 * result is stored in an internal array<br>the array is build like a tree,
	 * so that it is possible to get only a specific process with the childs
	 *
	 * @return void
	 */
	public function execute()
	{
		if (empty($this->_filecontent)) {
			return;
		}
		$group = "";
		foreach ($this->_filecontent as $block) {
			if (preg_match('/^(NOTICE: )|(ERROR: )/m', $block)) {
				$group = "";
				$lines = preg_split("/\r?\n/", $block, -1, PREG_SPLIT_NO_EMPTY);
				foreach ($lines as $line) {
					if (preg_match('/^NOTICE: added\s+\/dev\/(.+)\s+to RAID set\s+\"(.+)\"/', $line, $partition)) {
						$this->_result['devices'][$partition[2]]['partitions'][$partition[1]]['status'] = "ok";
					} elseif (preg_match('/^ERROR: .* device\s+\/dev\/(.+)\s+(.+)\s+in RAID set\s+\"(.+)\"/', $line, $partition)) {
						if ($partition[2]=="broken") {
							$this->_result['devices'][$partition[3]]['partitions'][$partition[1]]['status'] = 'F';
						} else {
							$this->_result['devices'][$partition[3]]['partitions'][$partition[1]]['status'] = 'W';
						}
					}
				}
			} else {
				if (preg_match('/^Group superset\s+(.+)/m', $block, $arrname)) {
					$group = trim($arrname[1]);
				}
				if (preg_match('/^name\s*:\s*(.*)/m', $block, $arrname)) {
					if ($group=="") {
						$group = trim($arrname[1]);
					}
					$this->_result['devices'][$group]['name'] = $arrname[1];
					if (preg_match('/^size\s*:\s*(.*)/m', $block, $size)) {
						$this->_result['devices'][$group]['size'] = trim($size[1]);
					}
					if (preg_match('/^stride\s*:\s*(.*)/m', $block, $stride)) {
							$this->_result['devices'][$group]['stride'] = trim($stride[1]);
					}
					if (preg_match('/^type\s*:\s*(.*)/m', $block, $type)) {
						$this->_result['devices'][$group]['type'] = trim($type[1]);
					}
					if (preg_match('/^status\s*:\s*(.*)/m', $block, $status)) {
						$this->_result['devices'][$group]['status'] = trim($status[1]);
					}
					if (preg_match('/^subsets\s*:\s*(.*)/m', $block, $subsets)) {
						$this->_result['devices'][$group]['subsets'] = trim($subsets[1]);
					}
					if (preg_match('/^devs\s*:\s*(.*)/m', $block, $devs)) {
						$this->_result['devices'][$group]['devs'] = trim($devs[1]);
					}
					if (preg_match('/^spares\s*:\s*(.*)/m', $block, $spares)) {
							$this->_result['devices'][$group]['spares'] = trim($spares[1]);
					}
					$group = "";
				}
			}
		}
	}

	/**
	 * generates the XML content for the plugin
	 *
	 * @return SimpleXMLObject entire XML content for the plugin
	 */
	public function xml()
	{
		if (empty($this->_result)) {
			return $this->xml->getSimpleXmlElement();
		}
		$hideRaids = array();
		if (defined('PSI_PLUGIN_DMRAID_HIDE_RAID_DEVICES') && is_string(PSI_PLUGIN_DMRAID_HIDE_RAID_DEVICES)) {
			if (preg_match(ARRAY_EXP, PSI_PLUGIN_DMRAID_HIDE_RAID_DEVICES)) {
				$hideRaids = eval(PSI_PLUGIN_DMRAID_HIDE_RAID_DEVICES);
			} else {
				$hideRaids = array(PSI_PLUGIN_DMRAID_HIDE_RAID_DEVICES);
			}
		}
		foreach ($this->_result['devices'] as $key=>$device) {
			if (!in_array($key, $hideRaids, true)) {
				$dev = $this->xml->addChild("Raid");
				$dev->addAttribute("Device_Name", $key);
				$dev->addAttribute("Type", $device["type"]);
				$dev->addAttribute("Disk_Status", $device["status"]);
				$dev->addAttribute("Name", $device["name"]);
				$dev->addAttribute("Size", $device["size"]);
				$dev->addAttribute("Stride", $device["stride"]);
				$dev->addAttribute("Subsets", $device["subsets"]);
				$dev->addAttribute("Devs", $device["devs"]);
				$dev->addAttribute("Spares", $device["spares"]);
				$disks = $dev->addChild("Disks");
				if (isset($device['partitions']) && sizeof($device['partitions']>0)) foreach ($device['partitions'] as $diskkey=>$disk) {
					$disktemp = $disks->addChild("Disk");
					$disktemp->addAttribute("Name", $diskkey);
					if ($device["status"]=='ok') {
						$disktemp->addAttribute("Status", $disk['status']);
					} else {
						$disktemp->addAttribute("Status", 'W');
					}
				}
			}
		}

		return $this->xml->getSimpleXmlElement();
	}
}