<?php
/**
 * Linux System Class
 *
 * PHP version 5
 *
 * @category  PHP
 * @package   PSI Linux OS class
 * @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.Linux.inc.php 712 2012-12-05 14:09:18Z namiltd $
 * @link      http://phpsysinfo.sourceforge.net
 */
 /**
 * Linux sysinfo class
 * get all the required information from Linux system
 *
 * @category  PHP
 * @package   PSI Linux OS class
 * @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 Linux extends OS
{
	/**
	 * Assoc array of all CPUs loads.
	 */
	protected $_cpu_loads;

	/**
	 * call parent constructor
	 */
	public function __construct()
	{
		parent::__construct();
	}

	/**
	 * Machine
	 *
	 * @return void
	 */
	private function _machine()
	{
		if ((CommonFunctions::rfts('/var/log/dmesg', $result, 0, 4096, false)
			  && preg_match('/^[\s\[\]\.\d]*DMI:\s*(.*)/m', $result, $ar_buf))
		   ||(CommonFunctions::executeProgram('dmesg', '', $result, false)
			  && preg_match('/^[\s\[\]\.\d]*DMI:\s*(.*)/m', $result, $ar_buf))) {
			$this->sys->setMachine(trim($ar_buf[1]));
		} else { //data from /sys/devices/virtual/dmi/id/
			$machine = "";
			$product = "";
			$board = "";
			$bios = "";
			if (CommonFunctions::rfts('/sys/devices/virtual/dmi/id/board_vendor', $buf, 1, 4096, false) && (trim($buf)!="")) {
				$machine = trim($buf);
			}
			if (CommonFunctions::rfts('/sys/devices/virtual/dmi/id/product_name', $buf, 1, 4096, false) && (trim($buf)!="")) {
				$product = trim($buf);
			}
			if (CommonFunctions::rfts('/sys/devices/virtual/dmi/id/board_name', $buf, 1, 4096, false) && (trim($buf)!="")) {
				$board = trim($buf);
			}
			if (CommonFunctions::rfts('/sys/devices/virtual/dmi/id/bios_version', $buf, 1, 4096, false) && (trim($buf)!="")) {
				$bios = trim($buf);
			}
			if (CommonFunctions::rfts('/sys/devices/virtual/dmi/id/bios_date', $buf, 1, 4096, false) && (trim($buf)!="")) {
				$bios = trim($bios." ".trim($buf));
			}
			if ($product != "") {
				$machine .= " ".$product;
			}
			if ($board != "") {
				$machine .= "/".$board;
			}
			if ($bios != "") {
				$machine .= ", BIOS ".$bios;
			}

			if ($machine != "") {
				$this->sys->setMachine(trim($machine));
			} elseif (CommonFunctions::fileexists($filename="/etc/config/uLinux.conf") // QNAP detection
			   && CommonFunctions::rfts($filename, $buf, 0, 4096, false)
			   && preg_match("/^Rsync\sModel\s*=\s*QNAP/m", $buf)
			   && CommonFunctions::fileexists($filename="/etc/platform.conf") // Platform detection
			   && CommonFunctions::rfts($filename, $buf, 0, 4096, false)
			   && preg_match("/^DISPLAY_NAME\s*=\s*(\S+)/m", $buf, $mach_buf) && ($mach_buf[1]!=="")) {
				$this->sys->setMachine("QNAP ".$mach_buf[1]);
			}
		}
	}

	/**
	 * Hostname
	 *
	 * @return void
	 */
	protected function _hostname()
	{
		if (PSI_USE_VHOST === true) {
			$this->sys->setHostname(getenv('SERVER_NAME'));
		} else {
			if (CommonFunctions::rfts('/proc/sys/kernel/hostname', $result, 1)) {
				$result = trim($result);
				$ip = gethostbyname($result);
				if ($ip != $result) {
					$this->sys->setHostname(gethostbyaddr($ip));
				}
			}
		}
	}

	/**
	 * Kernel Version
	 *
	 * @return void
	 */
	private function _kernel()
	{
		$result = "";
		if (CommonFunctions::executeProgram($uname="uptrack-uname", '-r', $strBuf, false) || // show effective kernel if ksplice uptrack is installed
			CommonFunctions::executeProgram($uname="uname", '-r', $strBuf, PSI_DEBUG)) {
			$result = $strBuf;
			if (CommonFunctions::executeProgram($uname, '-v', $strBuf, PSI_DEBUG)) {
				if (preg_match('/SMP/', $strBuf)) {
					$result .= ' (SMP)';
				}
			}
			if (CommonFunctions::executeProgram($uname, '-m', $strBuf, PSI_DEBUG)) {
				$result .= ' '.$strBuf;
			}
		} elseif (CommonFunctions::rfts('/proc/version', $strBuf, 1) &&  preg_match('/version (.*?) /', $strBuf, $ar_buf)) {
			$result = $ar_buf[1];
			if (preg_match('/SMP/', $strBuf)) {
				$result .= ' (SMP)';
			}
		}
		if ($result != "") {
			if (CommonFunctions::rfts('/proc/self/cgroup', $strBuf2, 0, 4096, false)) {
				if (preg_match('/:\/lxc\//m', $strBuf2)) {
					$result .= ' [lxc]';
				} elseif (preg_match('/:\/docker\//m', $strBuf2)) {
					$result .= ' [docker]';
				} elseif (preg_match('/:\/system\.slice\/docker\-/m', $strBuf2)) {
					$result .= ' [docker]';
				}
			}
			$this->sys->setKernel($result);
		}
	}

	/**
	 * UpTime
	 * time the system is running
	 *
	 * @return void
	 */
	protected function _uptime()
	{
		CommonFunctions::rfts('/proc/uptime', $buf, 1);
		$ar_buf = preg_split('/ /', $buf);
		$this->sys->setUptime(trim($ar_buf[0]));
	}

	/**
	 * Processor Load
	 * optionally create a loadbar
	 *
	 * @return void
	 */
	protected function _loadavg()
	{
		if (CommonFunctions::rfts('/proc/loadavg', $buf)) {
			$result = preg_split("/\s/", $buf, 4);
			// don't need the extra values, only first three
			unset($result[3]);
			$this->sys->setLoad(implode(' ', $result));
		}
		if (PSI_LOAD_BAR) {
			$this->sys->setLoadPercent($this->_parseProcStat('cpu'));
		}
	}

	/**
	 * fill the load for a individual cpu, through parsing /proc/stat for the specified cpu
	 *
	 * @param String $cpuline cpu for which load should be meassured
	 *
	 * @return Integer
	 */
	protected function _parseProcStat($cpuline)
	{
		if (is_null($this->_cpu_loads)) {
			$this->_cpu_loads = array();

			if (CommonFunctions::rfts('/proc/stat', $buf)) {
				if (preg_match_all('/^(cpu[0-9]*) (.*)/m', $buf, $matches, PREG_SET_ORDER)) {
					foreach ($matches as $line) {
						$cpu = $line[1];
						$buf2 = $line[2];

						$this->_cpu_loads[$cpu] = array();

						$ab = 0;
						$ac = 0;
						$ad = 0;
						$ae = 0;
						sscanf($buf2, "%Ld %Ld %Ld %Ld", $ab, $ac, $ad, $ae);
						$this->_cpu_loads[$cpu]['load'] = $ab + $ac + $ad; // cpu.user + cpu.sys
						$this->_cpu_loads[$cpu]['total'] = $ab + $ac + $ad + $ae; // cpu.total
					}
				}
			}
			// we need a second value, wait 1 second befor getting (< 1 second no good value will occour)
			if (PSI_LOAD_BAR) {
				sleep(1);
			}
			if (CommonFunctions::rfts('/proc/stat', $buf)) {
				if (preg_match_all('/^(cpu[0-9]*) (.*)/m', $buf, $matches, PREG_SET_ORDER)) {
					foreach ($matches as $line) {
						$cpu = $line[1];
						$buf2 = $line[2];

						$ab = 0;
						$ac = 0;
						$ad = 0;
						$ae = 0;
						sscanf($buf2, "%Ld %Ld %Ld %Ld", $ab, $ac, $ad, $ae);
						$load2 = $ab + $ac + $ad; // cpu.user + cpu.sys
						$total2 = $ab + $ac + $ad + $ae; // cpu.total
						$total = $this->_cpu_loads[$cpu]['total'];
						$load = $this->_cpu_loads[$cpu]['load'];
						$this->_cpu_loads[$cpu] = 0;
						if ($total > 0 && $total2 > 0 && $load > 0 && $load2 > 0 && $total2 != $total && $load2 != $load) {
							$this->_cpu_loads[$cpu] = (100 * ($load2 - $load)) / ($total2 - $total);
						}
					}
				}
			}
		}

		if (isset($this->_cpu_loads[$cpuline])) {
			return $this->_cpu_loads[$cpuline];
		}

		return 0;
	}

	/**
	 * CPU information
	 * All of the tags here are highly architecture dependant.
	 *
	 * @return void
	 */
	protected function _cpuinfo()
	{
		if (CommonFunctions::rfts('/proc/cpuinfo', $bufr)) {
			$processors = preg_split('/\s?\n\s?\n/', trim($bufr));
			$procname = null;
			foreach ($processors as $processor) {
				$proc = null;
				$arch = null;
				$dev = new CpuDevice();
				$details = preg_split("/\n/", $processor, -1, PREG_SPLIT_NO_EMPTY);
				foreach ($details as $detail) {
					$arrBuff = preg_split('/\s*:\s*/', trim($detail));
					if (count($arrBuff) == 2) {
						switch (strtolower($arrBuff[0])) {
							case 'processor':
								$proc = trim($arrBuff[1]);
								if (is_numeric($proc)) {
									if (strlen($procname)>0) {
										$dev->setModel($procname);
									}
								} else {
									$procname = $proc;
									$dev->setModel($procname);
								}
							break;
							case 'model name':
							case 'cpu model':
							case 'cpu type':
							case 'cpu':
								$dev->setModel($arrBuff[1]);
							break;
							case 'cpu mhz':
							case 'clock':
								if ($arrBuff[1] > 0) { //openSUSE fix
									$dev->setCpuSpeed($arrBuff[1]);
								}
							break;
							case 'cycle frequency [hz]':
								$dev->setCpuSpeed($arrBuff[1] / 1000000);
							break;
							case 'cpu0clktck':
								$dev->setCpuSpeed(hexdec($arrBuff[1]) / 1000000); // Linux sparc64
							break;
							case 'l2 cache':
							case 'cache size':
								$dev->setCache(preg_replace("/[a-zA-Z]/", "", $arrBuff[1]) * 1024);
							break;
							case 'initial bogomips':
							case 'bogomips':
							case 'cpu0bogo':
								$dev->setBogomips($arrBuff[1]);
							break;
							case 'flags':
								if (preg_match("/ vmx/", $arrBuff[1])) {
									$dev->setVirt("vmx");
								} elseif (preg_match("/ svm/", $arrBuff[1])) {
									$dev->setVirt("svm");
								} elseif (preg_match("/ hypervisor/", $arrBuff[1])) {
									$dev->setVirt("hypervisor");
								}
							break;
							case 'i size':
							case 'd size':
								if ($dev->getCache() === null) {
									$dev->setCache($arrBuff[1] * 1024);
								} else {
									$dev->setCache($dev->getCache() + ($arrBuff[1] * 1024));
								}
							break;
							case 'cpu architecture':
								$arch = trim($arrBuff[1]);
							break;
						}
					}
				}
				// sparc64 specific code follows
				// This adds the ability to display the cache that a CPU has
				// Originally made by Sven Blumenstein <bazik@gentoo.org> in 2004
				// Modified by Tom Weustink <freshy98@gmx.net> in 2004
				$sparclist = array('SUNW,UltraSPARC@0,0', 'SUNW,UltraSPARC-II@0,0', 'SUNW,UltraSPARC@1c,0', 'SUNW,UltraSPARC-IIi@1c,0', 'SUNW,UltraSPARC-II@1c,0', 'SUNW,UltraSPARC-IIe@0,0');
				foreach ($sparclist as $name) {
					if (CommonFunctions::rfts('/proc/openprom/'.$name.'/ecache-size', $buf, 1, 32, false)) {
						$dev->setCache(base_convert($buf, 16, 10));
					}
				}
				// sparc64 specific code ends

				// XScale detection code
				if (($arch === "5TE") && ($dev->getBogomips() != null)) {
					$dev->setCpuSpeed($dev->getBogomips()); //BogoMIPS are not BogoMIPS on this CPU, it's the speed
					$dev->setBogomips(null); // no BogoMIPS available, unset previously set BogoMIPS
				}

				if ($proc != null) {
					if (!is_numeric($proc)) {
						$proc = 0;
					}
					// variable speed processors specific code follows
					if (CommonFunctions::rfts('/sys/devices/system/cpu/cpu'.$proc.'/cpufreq/cpuinfo_cur_freq', $buf, 1, 4096, false)) {
						$dev->setCpuSpeed($buf / 1000);
					} elseif (CommonFunctions::rfts('/sys/devices/system/cpu/cpu'.$proc.'/cpufreq/scaling_cur_freq', $buf, 1, 4096, false)) {
						$dev->setCpuSpeed($buf / 1000);
					}
					if (CommonFunctions::rfts('/sys/devices/system/cpu/cpu'.$proc.'/cpufreq/cpuinfo_max_freq', $buf, 1, 4096, false)) {
						$dev->setCpuSpeedMax($buf / 1000);
					}
					if (CommonFunctions::rfts('/sys/devices/system/cpu/cpu'.$proc.'/cpufreq/cpuinfo_min_freq', $buf, 1, 4096, false)) {
						$dev->setCpuSpeedMin($buf / 1000);
					}
					// variable speed processors specific code ends
					if (PSI_LOAD_BAR) {
							$dev->setLoad($this->_parseProcStat('cpu'.$proc));
					}

					if (CommonFunctions::rfts('/proc/acpi/thermal_zone/THRM/temperature', $buf, 1, 4096, false)) {
						$dev->setTemp(substr($buf, 25, 2));
					}
					if ($dev->getModel() === "") {
						$dev->setModel("unknown");
					}
					$this->sys->setCpus($dev);
				}
			}
		}
	}

	/**
	 * PCI devices
	 *
	 * @return void
	 */
	private function _pci()
	{
		if ($arrResults = Parser::lspci()) {
			foreach ($arrResults as $dev) {
				$this->sys->setPciDevices($dev);
			}
		} elseif (CommonFunctions::rfts('/proc/pci', $strBuf, 0, 4096, false)) {
			$booDevice = false;
			$arrBuf = preg_split("/\n/", $strBuf, -1, PREG_SPLIT_NO_EMPTY);
			foreach ($arrBuf as $strLine) {
				if (preg_match('/^\s*Bus\s/', $strLine)) {
					$booDevice = true;
					continue;
				}
				if ($booDevice) {
					$dev = new HWDevice();
					$dev->setName(preg_replace('/\([^\)]+\)\.$/', '', trim($strLine)));
					$this->sys->setPciDevices($dev);
					/*
					list($strKey, $strValue) = preg_split('/: /', $strLine, 2);
					if (!preg_match('/bridge/i', $strKey) && !preg_match('/USB/i ', $strKey)) {
						$dev = new HWDevice();
						$dev->setName(preg_replace('/\([^\)]+\)\.$/', '', trim($strValue)));
						$this->sys->setPciDevices($dev);
					}
					*/
					$booDevice = false;
				}
			}
		} else {
			$pcidevices = glob('/sys/bus/pci/devices/*/uevent', GLOB_NOSORT);
			if (($total = count($pcidevices)) > 0) {
				$buf = "";
				for ($i = 0; $i < $total; $i++) {
					if (CommonFunctions::rfts($pcidevices[$i], $buf, 0, 4096, false) && (trim($buf) != "")) {
						$pcibuf = "";
						if (preg_match("/^PCI_CLASS=(\S+)/m", trim($buf), $subbuf)) {
							$pcibuf = "Class ".$subbuf[1].":";
						}
						if (preg_match("/^PCI_ID=(\S+)/m", trim($buf), $subbuf)) {
							$pcibuf .= " Device ".$subbuf[1];
						}
						if (preg_match("/^DRIVER=(\S+)/m", trim($buf), $subbuf)) {
							$pcibuf .= " Driver ".$subbuf[1];
						}
						$dev = new HWDevice();
						if (trim($pcibuf) != "") {
							$dev->setName(trim($pcibuf));
						} else {
							$dev->setName("unknown");
						}
						$this->sys->setPciDevices($dev);
					}
				}
			}
		}
	}

	/**
	 * IDE devices
	 *
	 * @return void
	 */
	private function _ide()
	{
		$bufd = CommonFunctions::gdc('/proc/ide', false);
		foreach ($bufd as $file) {
			if (preg_match('/^hd/', $file)) {
				$dev = new HWDevice();
				$dev->setName(trim($file));
				if (CommonFunctions::rfts("/proc/ide/".$file."/media", $buf, 1)) {
					if (trim($buf) == 'disk') {
						if (CommonFunctions::rfts("/proc/ide/".$file."/capacity", $buf, 1, 4096, false) || CommonFunctions::rfts("/sys/block/".$file."/size", $buf, 1, 4096, false)) {
							$dev->setCapacity(trim($buf) * 512 / 1024);
						}
					}
				}
				if (CommonFunctions::rfts("/proc/ide/".$file."/model", $buf, 1)) {
					$dev->setName($dev->getName().": ".trim($buf));
				}
				$this->sys->setIdeDevices($dev);
			}
		}
	}

	/**
	 * SCSI devices
	 *
	 * @return void
	 */
	private function _scsi()
	{
		$get_type = false;
		$device = null;
		if (CommonFunctions::executeProgram('lsscsi', '-c', $bufr, PSI_DEBUG) || CommonFunctions::rfts('/proc/scsi/scsi', $bufr, 0, 4096, PSI_DEBUG)) {
			$bufe = preg_split("/\n/", $bufr, -1, PREG_SPLIT_NO_EMPTY);
			foreach ($bufe as $buf) {
				if (preg_match('/Vendor: (.*) Model: (.*) Rev: (.*)/i', $buf, $devices)) {
					$get_type = true;
					$device = $devices;
					continue;
				}
				if ($get_type) {
					preg_match('/Type:\s+(\S+)/i', $buf, $dev_type);
					$dev = new HWDevice();
					$dev->setName($device[1].' '.$device[2].' ('.$dev_type[1].')');
					$this->sys->setScsiDevices($dev);
					$get_type = false;
				}
			}
		}
	}

	/**
	 * USB devices
	 *
	 * @return array
	 */
	private function _usb()
	{
		$devnum = -1;
		if (CommonFunctions::executeProgram('lsusb', '', $bufr, PSI_DEBUG) && (trim($bufr) !== "")) {
			$bufe = preg_split("/\n/", $bufr, -1, PREG_SPLIT_NO_EMPTY);
			foreach ($bufe as $buf) {
				$device = preg_split("/ /", $buf, 7);
				if (isset($device[6]) && trim($device[6]) != "") {
					$dev = new HWDevice();
					$dev->setName(trim($device[6]));
					$this->sys->setUsbDevices($dev);
				} elseif (isset($device[5]) && trim($device[5]) != "") {
					$dev = new HWDevice();
					$dev->setName("unknown");
					$this->sys->setUsbDevices($dev);
				}
			}
		} elseif (CommonFunctions::rfts('/proc/bus/usb/devices', $bufr, 0, 4096, false)) {
			$bufe = preg_split("/\n/", $bufr, -1, PREG_SPLIT_NO_EMPTY);
			foreach ($bufe as $buf) {
				if (preg_match('/^T/', $buf)) {
					$devnum += 1;
					$results[$devnum] = "";
				} elseif (preg_match('/^S:/', $buf)) {
					list($key, $value) = preg_split('/: /', $buf, 2);
					list($key, $value2) = preg_split('/=/', $value, 2);
					if ((trim($key) == "Manufacturer") && (preg_match("/^linux\s/i", trim($value2)))) {
						$value2 = "Linux";
					}
					if (trim($key) != "SerialNumber") {
						$results[$devnum] .= " ".trim($value2);
					}
				}
			}
			foreach ($results as $var) {
				$dev = new HWDevice();
				$var = trim($var);
				if ($var != "") {
					$dev->setName($var);
				} else {
					$dev->setName("unknown");
				}
				$this->sys->setUsbDevices($dev);
			}
		} else {
			$usbdevices = glob('/sys/bus/usb/devices/*/idProduct', GLOB_NOSORT);
			if (($total = count($usbdevices)) > 0) {
				$buf = "";
				for ($i = 0; $i < $total; $i++) {
					if (CommonFunctions::rfts($usbdevices[$i], $buf, 1, 4096, false) && (trim($buf) != "")) { //is readable
						$product = preg_replace("/\/idProduct$/", "/product", $usbdevices[$i]);
						$manufacturer = preg_replace("/\/idProduct$/", "/manufacturer", $usbdevices[$i]);
						$usbbuf = "";
						if (CommonFunctions::fileexists($manufacturer) && CommonFunctions::rfts($manufacturer, $buf, 1, 4096, false) && (trim($buf) != "")) {
							if (preg_match("/^linux\s/i", trim($buf))) {
								$usbbuf = "Linux";
							} else {
								$usbbuf = trim($buf);
							}
						}
						if (CommonFunctions::fileexists($product) && CommonFunctions::rfts($product, $buf, 1, 4096, false) && (trim($buf) != "")) {
							$usbbuf .= " ".trim($buf);
						}
						$dev = new HWDevice();
						if (trim($usbbuf) != "") {
							$dev->setName(trim($usbbuf));
						} else {
							$dev->setName("unknown");
						}
						$this->sys->setUsbDevices($dev);
					}
				}
			}
		}
	}

	/**
	 * I2C devices
	 *
	 * @return void
	 */
	protected function _i2c()
	{
		$i2cdevices = glob('/sys/bus/i2c/devices/*/name', GLOB_NOSORT);
		if (($total = count($i2cdevices)) > 0) {
			$buf = "";
			for ($i = 0; $i < $total; $i++) {
				if (CommonFunctions::rfts($i2cdevices[$i], $buf, 1, 4096, false) && (trim($buf) != "")) {
					$dev = new HWDevice();
					$dev->setName(trim($buf));
					$this->sys->setI2cDevices($dev);
				}
			}
		}
	}

	/**
	 * Network devices
	 * includes also rx/tx bytes
	 *
	 * @return void
	 */
	protected function _network()
	{
		if (CommonFunctions::rfts('/proc/net/dev', $bufr, 0, 4096, PSI_DEBUG)) {
			$bufe = preg_split("/\n/", $bufr, -1, PREG_SPLIT_NO_EMPTY);
			foreach ($bufe as $buf) {
				if (preg_match('/:/', $buf)) {
					list($dev_name, $stats_list) = preg_split('/:/', $buf, 2);
					$stats = preg_split('/\s+/', trim($stats_list));
					$dev = new NetDevice();
					$dev->setName(trim($dev_name));
					$dev->setRxBytes($stats[0]);
					$dev->setTxBytes($stats[8]);
					$dev->setErrors($stats[2] + $stats[10]);
					$dev->setDrops($stats[3] + $stats[11]);
					if (defined('PSI_SHOW_NETWORK_INFOS') && (PSI_SHOW_NETWORK_INFOS)) {
						if ((CommonFunctions::executeProgram('ip', 'addr show '.trim($dev_name), $bufr2, PSI_DEBUG) && (trim($bufr2)!=""))
						   || CommonFunctions::executeProgram('ifconfig', trim($dev_name).' 2>/dev/null', $bufr2, PSI_DEBUG)) {
							$bufe2 = preg_split("/\n/", $bufr2, -1, PREG_SPLIT_NO_EMPTY);
							$macaddr = "";
							foreach ($bufe2 as $buf2) {
								//                                if (preg_match('/^'.trim($dev_name).'\s+Link\sencap:Ethernet\s+HWaddr\s(\S+)/i', $buf2, $ar_buf2)
								if (preg_match('/\s+encap:Ethernet\s+HWaddr\s(\S+)/i', $buf2, $ar_buf2)
								   || preg_match('/^\s+ether\s+(\S+)\s+txqueuelen/i', $buf2, $ar_buf2)
								   || preg_match('/^\s+link\/ether\s+(\S+)\s+brd/i', $buf2, $ar_buf2)) //ip
									$macaddr = preg_replace('/:/', '-', strtoupper($ar_buf2[1]));
								elseif (preg_match('/^\s+inet\saddr:(\S+)\s+P-t-P:(\S+)/i', $buf2, $ar_buf2)
									   || preg_match('/^\s+inet\s+(\S+)\s+netmask.+destination\s+(\S+)/i', $buf2, $ar_buf2)
									   || preg_match('/^\s+inet\s+([^\/\s]+).*peer\s+([^\/\s]+).*\s+scope\s((global)|(host))/i', $buf2, $ar_buf2)) { //ip
									if ($ar_buf2[1] != $ar_buf2[2]) {
										$dev->setInfo(($dev->getInfo()?$dev->getInfo().';':'').$ar_buf2[1].";:".$ar_buf2[2]);
									} else {
										$dev->setInfo(($dev->getInfo()?$dev->getInfo().';':'').$ar_buf2[1]);
									}
								} elseif (preg_match('/^\s+inet\saddr:(\S+)/i', $buf2, $ar_buf2)
								   || preg_match('/^\s+inet\s+(\S+)\s+netmask/i', $buf2, $ar_buf2)
								   || preg_match('/^'.trim($dev_name).':\s+ip\s+(\S+)\s+mask/i', $buf2, $ar_buf2)
								   || preg_match('/^\s+inet6\saddr:\s([^\/\s]+)(.+)\s+Scope:[GH]/i', $buf2, $ar_buf2)
								   || preg_match('/^\s+inet6\s+(\S+)\s+prefixlen(.+)((<global>)|(<host>))/i', $buf2, $ar_buf2)
								   || preg_match('/^\s+inet6?\s+([^\/\s]+).*\s+scope\s((global)|(host))/i', $buf2, $ar_buf2)) //ip
									$dev->setInfo(($dev->getInfo()?$dev->getInfo().';':'').strtolower($ar_buf2[1]));
							}
						}
						if ($macaddr != "") {
							$dev->setInfo($macaddr.($dev->getInfo()?';'.$dev->getInfo():''));
						}
						if (CommonFunctions::rfts('/sys/class/net/'.trim($dev_name).'/speed', $buf, 1, 4096, false) && (trim($buf)!="") && ($buf > 0) && ($buf < 65535)) {
							$speed = trim($buf);
							if ($speed > 1000) {
								$speed = $speed/1000;
								$unit = "G";
							} else {
								$unit = "M";
							}
							if (CommonFunctions::rfts('/sys/class/net/'.trim($dev_name).'/duplex', $buf, 1, 4096, false) && (trim($buf)!="")) {
								$dev->setInfo(($dev->getInfo()?$dev->getInfo().';':'').$speed.$unit.'b/s '.strtolower(trim($buf)));
							} else {
								$dev->setInfo(($dev->getInfo()?$dev->getInfo().';':'').$speed.$unit.'b/s');
							}
						}
					}
					$this->sys->setNetDevices($dev);
				}
			}
		} elseif (CommonFunctions::executeProgram('ip', 'addr show', $bufr, PSI_DEBUG) && (trim($bufr)!="")) {
			$lines = preg_split("/\n/", $bufr, -1, PREG_SPLIT_NO_EMPTY);
			$was = false;
			foreach ($lines as $line) {
				if (preg_match("/^\d+:\s+([^\s:]+)/", $line, $ar_buf)) {
					if ($was) {
						if ($macaddr != "") {
							$dev->setInfo($macaddr.($dev->getInfo()?';'.$dev->getInfo():''));
						}
						if ($speedinfo != "") {
							$dev->setInfo(($dev->getInfo()?$dev->getInfo().';':'').$speedinfo);
						}
						$this->sys->setNetDevices($dev);
					}
					$speedinfo = "";
					$macaddr = "";
					$dev = new NetDevice();
					$dev->setName($ar_buf[1]);
					if (CommonFunctions::executeProgram('ip', '-s link show '.$ar_buf[1], $bufr2, PSI_DEBUG) && (trim($bufr2)!="")
					   && preg_match("/\n\s+RX:\s[^\n]+\n\s+(\d+)\s+\d+\s+(\d+)\s+(\d+)[^\n]+\n\s+TX:\s[^\n]+\n\s+(\d+)\s+\d+\s+(\d+)\s+(\d+)/m", $bufr2, $ar_buf2)) {
						$dev->setRxBytes($ar_buf2[1]);
						$dev->setTxBytes($ar_buf2[4]);
						$dev->setErrors($ar_buf2[2]+$ar_buf2[5]);
						$dev->setDrops($ar_buf2[3]+$ar_buf2[6]);
					}
					$was = true;
					if (defined('PSI_SHOW_NETWORK_INFOS') && (PSI_SHOW_NETWORK_INFOS)) {
						if (CommonFunctions::rfts('/sys/class/net/'.$ar_buf[1].'/speed', $buf, 1, 4096, false) && (trim($buf)!="")) {
							$speed = trim($buf);
							if ($speed > 1000) {
								$speed = $speed/1000;
								$unit = "G";
							} else {
								$unit = "M";
							}
							if (CommonFunctions::rfts('/sys/class/net/'.$ar_buf[1].'/duplex', $buf, 1, 4096, false) && (trim($buf)!="")) {
								$speedinfo = $speed.$unit.'b/s '.strtolower(trim($buf));
							} else {
								$speedinfo = $speed.$unit.'b/s';
							}
						}
					}
				} else {
					if ($was) {
						if (defined('PSI_SHOW_NETWORK_INFOS') && (PSI_SHOW_NETWORK_INFOS)) {
							if (preg_match('/^\s+link\/ether\s+(\S+)\s+brd/i', $line, $ar_buf2))
								$macaddr = preg_replace('/:/', '-', strtoupper($ar_buf2[1]));
							elseif (preg_match('/^\s+inet\s+([^\/\s]+).*peer\s+([^\/\s]+).*\s+scope\s((global)|(host))/i', $line, $ar_buf2)) {
								if ($ar_buf2[1] != $ar_buf2[2]) {
									 $dev->setInfo(($dev->getInfo()?$dev->getInfo().';':'').$ar_buf2[1].";:".$ar_buf2[2]);
								} else {
									 $dev->setInfo(($dev->getInfo()?$dev->getInfo().';':'').$ar_buf2[1]);
								}
							} elseif (preg_match('/^\s+inet6?\s+([^\/\s]+).*\s+scope\s((global)|(host))/i', $line, $ar_buf2))
									 $dev->setInfo(($dev->getInfo()?$dev->getInfo().';':'').strtolower($ar_buf2[1]));
						}
					}
				}
			}
			if ($was) {
				if ($macaddr != "") {
					$dev->setInfo($macaddr.($dev->getInfo()?';'.$dev->getInfo():''));
				}
				if ($speedinfo != "") {
					$dev->setInfo(($dev->getInfo()?$dev->getInfo().';':'').$speedinfo);
				}
				$this->sys->setNetDevices($dev);
			}
		} elseif (CommonFunctions::executeProgram('ifconfig', '-a', $bufr, PSI_DEBUG)) {
			$lines = preg_split("/\n/", $bufr, -1, PREG_SPLIT_NO_EMPTY);
			$was = false;
			foreach ($lines as $line) {
				if (preg_match("/^([^\s:]+)/", $line, $ar_buf)) {
					if ($was) {
						$dev->setErrors($errors);
						$dev->setDrops($drops);
						if ($macaddr != "") {
							$dev->setInfo($macaddr.($dev->getInfo()?';'.$dev->getInfo():''));
						}
						if ($speedinfo != "") {
							$dev->setInfo(($dev->getInfo()?$dev->getInfo().';':'').$speedinfo);
						}
						$this->sys->setNetDevices($dev);
					}
					$errors = 0;
					$drops = 0;
					$speedinfo = "";
					$macaddr = "";
					$dev = new NetDevice();
					$dev->setName($ar_buf[1]);
					$was = true;
					if (defined('PSI_SHOW_NETWORK_INFOS') && (PSI_SHOW_NETWORK_INFOS)) {
						if (CommonFunctions::rfts('/sys/class/net/'.$ar_buf[1].'/speed', $buf, 1, 4096, false) && (trim($buf)!="")) {
							$speed = trim($buf);
							if ($speed > 1000) {
								$speed = $speed/1000;
								$unit = "G";
							} else {
								$unit = "M";
							}
							if (CommonFunctions::rfts('/sys/class/net/'.$ar_buf[1].'/duplex', $buf, 1, 4096, false) && (trim($buf)!="")) {
								$speedinfo = $speed.$unit.'b/s '.strtolower(trim($buf));
							} else {
								$speedinfo = $speed.$unit.'b/s';
							}
						}
						if (preg_match('/^'.$ar_buf[1].'\s+Link\sencap:Ethernet\s+HWaddr\s(\S+)/i', $line, $ar_buf2))
							$macaddr = preg_replace('/:/', '-', strtoupper($ar_buf2[1]));
						elseif (preg_match('/^'.$ar_buf[1].':\s+ip\s+(\S+)\s+mask/i', $line, $ar_buf2))
							$dev->setInfo(($dev->getInfo()?$dev->getInfo().';':'').$ar_buf2[1]);
					}
				} else {
					if ($was) {
						if (preg_match('/\sRX bytes:(\d+)\s/i', $line, $ar_buf2)) {
							$dev->setRxBytes($ar_buf2[1]);
						}
						if (preg_match('/\sTX bytes:(\d+)\s/i', $line, $ar_buf2)) {
							$dev->setTxBytes($ar_buf2[1]);
						}

						if (preg_match('/\sRX packets:\d+\serrors:(\d+)\sdropped:(\d+)/i', $line, $ar_buf2)) {
							$errors +=$ar_buf2[1];
							$drops +=$ar_buf2[2];
						} elseif (preg_match('/\sTX packets:\d+\serrors:(\d+)\sdropped:(\d+)/i', $line, $ar_buf2)) {
							$errors +=$ar_buf2[1];
							$drops +=$ar_buf2[2];
						}

						if (defined('PSI_SHOW_NETWORK_INFOS') && (PSI_SHOW_NETWORK_INFOS)) {
							if (preg_match('/\s+encap:Ethernet\s+HWaddr\s(\S+)/i', $line, $ar_buf2)
							 || preg_match('/^\s+ether\s+(\S+)\s+txqueuelen/i', $line, $ar_buf2))
								$macaddr = preg_replace('/:/', '-', strtoupper($ar_buf2[1]));
							elseif (preg_match('/^\s+inet\saddr:(\S+)\s+P-t-P:(\S+)/i', $line, $ar_buf2)
								  || preg_match('/^\s+inet\s+(\S+)\s+netmask.+destination\s+(\S+)/i', $line, $ar_buf2)) {
								if ($ar_buf2[1] != $ar_buf2[2]) {
									 $dev->setInfo(($dev->getInfo()?$dev->getInfo().';':'').$ar_buf2[1].";:".$ar_buf2[2]);
								} else {
									 $dev->setInfo(($dev->getInfo()?$dev->getInfo().';':'').$ar_buf2[1]);
								}
							} elseif (preg_match('/^\s+inet\saddr:(\S+)/i', $line, $ar_buf2)
								  || preg_match('/^\s+inet\s+(\S+)\s+netmask/i', $line, $ar_buf2)
								  || preg_match('/^\s+inet6\saddr:\s([^\/\s]+)(.+)\s+Scope:[GH]/i', $line, $ar_buf2)
								  || preg_match('/^\s+inet6\s+(\S+)\s+prefixlen(.+)((<global>)|(<host>))/i', $line, $ar_buf2))
								$dev->setInfo(($dev->getInfo()?$dev->getInfo().';':'').strtolower($ar_buf2[1]));
						}
					}
				}
			}
			if ($was) {
				$dev->setErrors($errors);
				$dev->setDrops($drops);
				if ($macaddr != "") {
					$dev->setInfo($macaddr.($dev->getInfo()?';'.$dev->getInfo():''));
				}
				if ($speedinfo != "") {
					$dev->setInfo(($dev->getInfo()?$dev->getInfo().';':'').$speedinfo);
				}
				$this->sys->setNetDevices($dev);
			}
		}
	}

	/**
	 * Physical memory information and Swap Space information
	 *
	 * @return void
	 */
	protected function _memory()
	{
		if (CommonFunctions::rfts('/proc/meminfo', $mbuf)) {
			$bufe = preg_split("/\n/", $mbuf, -1, PREG_SPLIT_NO_EMPTY);
			foreach ($bufe as $buf) {
				if (preg_match('/^MemTotal:\s+(.*)\s*kB/i', $buf, $ar_buf)) {
					$this->sys->setMemTotal($ar_buf[1] * 1024);
				} elseif (preg_match('/^MemFree:\s+(.*)\s*kB/i', $buf, $ar_buf)) {
					$this->sys->setMemFree($ar_buf[1] * 1024);
				} elseif (preg_match('/^Cached:\s+(.*)\s*kB/i', $buf, $ar_buf)) {
					$this->sys->setMemCache($ar_buf[1] * 1024);
				} elseif (preg_match('/^Buffers:\s+(.*)\s*kB/i', $buf, $ar_buf)) {
					$this->sys->setMemBuffer($ar_buf[1] * 1024);
				}
			}
			$this->sys->setMemUsed($this->sys->getMemTotal() - $this->sys->getMemFree());
			// values for splitting memory usage
			if ($this->sys->getMemCache() !== null && $this->sys->getMemBuffer() !== null) {
				$this->sys->setMemApplication($this->sys->getMemUsed() - $this->sys->getMemCache() - $this->sys->getMemBuffer());
			}
			if (CommonFunctions::rfts('/proc/swaps', $sbuf, 0, 4096, false)) {
				$swaps = preg_split("/\n/", $sbuf, -1, PREG_SPLIT_NO_EMPTY);
				unset($swaps[0]);
				foreach ($swaps as $swap) {
					$ar_buf = preg_split('/\s+/', $swap, 5);
					$dev = new DiskDevice();
					$dev->setMountPoint($ar_buf[0]);
					$dev->setName("SWAP");
					$dev->setTotal($ar_buf[2] * 1024);
					$dev->setUsed($ar_buf[3] * 1024);
					$dev->setFree($dev->getTotal() - $dev->getUsed());
					$this->sys->setSwapDevices($dev);
				}
			}
		}
	}

	/**
	 * filesystem information
	 *
	 * @return void
	 */
	private function _filesystems()
	{
		$df_args = "";
		$hideFstypes = array();
		if (defined('PSI_HIDE_FS_TYPES') && is_string(PSI_HIDE_FS_TYPES)) {
			if (preg_match(ARRAY_EXP, PSI_HIDE_FS_TYPES)) {
				$hideFstypes = eval(PSI_HIDE_FS_TYPES);
			} else {
				$hideFstypes = array(PSI_HIDE_FS_TYPES);
			}
		}
		foreach ($hideFstypes as $Fstype) {
			$df_args .= "-x $Fstype ";
		}
		if ($df_args !== "") {
			$df_args = trim($df_args); //trim spaces
			$arrResult = Parser::df("-P $df_args 2>/dev/null");
		} else {
			$arrResult = Parser::df("-P 2>/dev/null");
		}
		foreach ($arrResult as $dev) {
			$this->sys->setDiskDevices($dev);
		}
	}

	/**
	 * Distribution
	 *
	 * @return void
	 */
	protected function _distro()
	{
		$this->sys->setDistribution("Linux");
		$list = @parse_ini_file(APP_ROOT."/data/distros.ini", true);
		if (!$list) {
			return;
		}
		// We have the '2>/dev/null' because Ubuntu gives an error on this command which causes the distro to be unknown
		if (CommonFunctions::executeProgram('lsb_release', '-a 2>/dev/null', $distro_info, PSI_DEBUG) && (strlen($distro_info) > 0)) {
			$distro_tmp = preg_split("/\n/", $distro_info, -1, PREG_SPLIT_NO_EMPTY);
			foreach ($distro_tmp as $info) {
				$info_tmp = preg_split('/:/', $info, 2);
				if (isset($distro_tmp[0]) && !is_null($distro_tmp[0]) && (trim($distro_tmp[0]) != "") &&
					 isset($distro_tmp[1]) && !is_null($distro_tmp[1]) && (trim($distro_tmp[1]) != "")) {
					$distro[trim($info_tmp[0])] = trim($info_tmp[1]);
				}
			}
			if (!isset($distro['Distributor ID']) && !isset($distro['Description'])) { // Systems like StartOS
				if (isset($distro_tmp[0]) && !is_null($distro_tmp[0]) && (trim($distro_tmp[0]) != "")) {
					$this->sys->setDistribution(trim($distro_tmp[0]));
					if (preg_match('/^(\S+)\s*/', $distro_tmp[0], $id_buf)
						&& isset($list[trim($id_buf[1])]['Image'])) {
							$this->sys->setDistributionIcon($list[trim($id_buf[1])]['Image']);
					}
				}
			} else {
				if (isset($distro['Description'])
				   && preg_match('/^NAME=\s*(.+)\s*$/', $distro['Description'], $name_tmp)) {
					$distro['Description'] = $name_tmp[1];
				}
				if (isset($distro['Description'])
				   && ($distro['Description'] != "n/a")
				   && (!isset($distro['Distributor ID'])
				   || (($distro['Distributor ID'] != "n/a")
				   && ($distro['Description'] != $distro['Distributor ID'])))) {
					$this->sys->setDistribution($distro['Description']);
					if (isset($distro['Release']) && ($distro['Release'] != "n/a")
					   && ($distro['Release'] != $distro['Description']) && strstr($distro['Release'], ".")) {
						if (preg_match("/^(\d+)\.[0]+$/", $distro['Release'], $match_buf)) {
							$tofind = $match_buf[1];
						} else {
							$tofind = $distro['Release'];
						}
						if (!preg_match("/^".$tofind."[\s\.]|[\(\[]".$tofind."[\.\)\]]|\s".$tofind."$|\s".$tofind."[\s\.]/", $distro['Description'])) {
							$this->sys->setDistribution($this->sys->getDistribution()." ".$distro['Release']);
						}
					}
				} elseif (isset($distro['Distributor ID']) && ($distro['Distributor ID'] != "n/a")) {
					$this->sys->setDistribution($distro['Distributor ID']);
					if (isset($distro['Release']) && ($distro['Release'] != "n/a")) {
						$this->sys->setDistribution($this->sys->getDistribution()." ".$distro['Release']);
					}
					if (isset($distro['Codename']) && ($distro['Codename'] != "n/a")) {
						$this->sys->setDistribution($this->sys->getDistribution()." (".$distro['Codename'].")");
					}
				}
				if (isset($distro['Distributor ID']) && ($distro['Distributor ID'] != "n/a") && isset($list[$distro['Distributor ID']]['Image'])) {
					$this->sys->setDistributionIcon($list[$distro['Distributor ID']]['Image']);
				}
			}
		} else {
			/* default error handler */
			if (function_exists('errorHandlerPsi')) {
				restore_error_handler();
			}
			/* fatal errors only */
			$old_err_rep = error_reporting();
			error_reporting(E_ERROR);

			// Fall back in case 'lsb_release' does not exist but exist /etc/lsb-release
			if (CommonFunctions::fileexists($filename="/etc/lsb-release")
			   && CommonFunctions::rfts($filename, $buf, 0, 4096, false)
			   && preg_match('/^DISTRIB_ID="?([^"\n]+)"?/m', $buf, $id_buf)) {
				if (preg_match('/^DISTRIB_DESCRIPTION="?([^"\n]+)"?/m', $buf, $desc_buf)
				   && (trim($desc_buf[1])!=trim($id_buf[1]))) {
					$this->sys->setDistribution(trim($desc_buf[1]));
					if (preg_match('/^DISTRIB_RELEASE="?([^"\n]+)"?/m', $buf, $vers_buf)
					   && (trim($vers_buf[1])!=trim($desc_buf[1])) && strstr($vers_buf[1], ".")) {
						if (preg_match("/^(\d+)\.[0]+$/", trim($vers_buf[1]), $match_buf)) {
							$tofind = $match_buf[1];
						} else {
							$tofind = trim($vers_buf[1]);
						}
						if (!preg_match("/^".$tofind."[\s\.]|[\(\[]".$tofind."[\.\)\]]|\s".$tofind."$|\s".$tofind."[\s\.]/", trim($desc_buf[1]))) {
							$this->sys->setDistribution($this->sys->getDistribution()." ".trim($vers_buf[1]));
						}
					}
				} else {
					if (isset($list[trim($id_buf[1])]['Name'])) {
						$this->sys->setDistribution(trim($list[trim($id_buf[1])]['Name']));
					} else {
						$this->sys->setDistribution(trim($id_buf[1]));
					}
					if (preg_match('/^DISTRIB_RELEASE="?([^"\n]+)"?/m', $buf, $vers_buf)) {
						$this->sys->setDistribution($this->sys->getDistribution()." ".trim($vers_buf[1]));
					}
					if (preg_match('/^DISTRIB_CODENAME="?([^"\n]+)"?/m', $buf, $vers_buf)) {
						$this->sys->setDistribution($this->sys->getDistribution()." (".trim($vers_buf[1]).")");
					}
				}
				if (isset($list[trim($id_buf[1])]['Image'])) {
					$this->sys->setDistributionIcon($list[trim($id_buf[1])]['Image']);
				}
			} else { // otherwise find files specific for distribution
				foreach ($list as $section=>$distribution) {
					if (!isset($distribution['Files'])) {
						continue;
					} else {
						foreach (preg_split("/;/", $distribution['Files'], -1, PREG_SPLIT_NO_EMPTY) as $filename) {
							if (CommonFunctions::fileexists($filename)) {
								$distro = $distribution;
								if (isset($distribution['Mode'])&&(strtolower($distribution['Mode'])=="detection")) {
									$buf = "";
								} elseif (isset($distribution['Mode'])&&(strtolower($distribution['Mode'])=="execute")) {
									if (!CommonFunctions::executeProgram($filename, '2>/dev/null', $buf, PSI_DEBUG)) {
										$buf = "";
									}
								} else {
									if (!CommonFunctions::rfts($filename, $buf, 1, 4096, false)) {
										$buf = "";
									} elseif (isset($distribution['Mode'])&&(strtolower($distribution['Mode'])=="analyse")) {
										if (preg_match('/^(\S+)\s*/', preg_replace('/^Red\s+/', 'Red', $buf), $id_buf)
										   && isset($list[trim($id_buf[1])]['Image'])) {
											$distro = $list[trim($id_buf[1])];
										}
									}
								}
								if (isset($distro['Image'])) {
									$this->sys->setDistributionIcon($distro['Image']);
								}
								if (isset($distribution['Name'])) {
									if (is_null($buf) || (trim($buf) == "")) {
										$this->sys->setDistribution($distribution['Name']);
									} else {
										$this->sys->setDistribution($distribution['Name']." ".trim($buf));
									}
								} else {
									if (is_null($buf) || (trim($buf) == "")) {
										$this->sys->setDistribution($section);
									} else {
										$this->sys->setDistribution(trim($buf));
									}
								}
								if (isset($distribution['Files2'])) {
									foreach (preg_split("/;/", $distribution['Files2'], -1, PREG_SPLIT_NO_EMPTY) as $filename2) {
										if (CommonFunctions::fileexists($filename2) && CommonFunctions::rfts($filename2, $buf, 0, 4096, false)) {
											if (preg_match('/^majorversion="?([^"\n]+)"?/m', $buf, $maj_buf)
											   && preg_match('/^minorversion="?([^"\n]+)"?/m', $buf, $min_buf)) {
												$distr2=$maj_buf[1].'.'.$min_buf[1];
												if (preg_match('/^buildphase="?([^"\n]+)"?/m', $buf, $pha_buf) && ($pha_buf[1]!=="0")) {
													$distr2.='.'.$pha_buf[1];
												}
												if (preg_match('/^buildnumber="?([^"\n]+)"?/m', $buf, $num_buf)) {
													$distr2.='-'.$num_buf[1];
												}
												if (preg_match('/^builddate="?([^"\n]+)"?/m', $buf, $dat_buf)) {
													$distr2.=' ('.$dat_buf[1].')';
												}
												$this->sys->setDistribution($this->sys->getDistribution()." ".$distr2);
											} else {
												$distr2=trim(substr($buf, 0, strpos($buf, "\n")));
												if (!is_null($distr2) && ($distr2 != "")) {
													$this->sys->setDistribution($this->sys->getDistribution()." ".$distr2);
												}
											}
											break;
										}
									}
								}
								break 2;
							}
						}
					}
				}
			}
			// if the distribution is still unknown
			if ($this->sys->getDistribution() == "Linux") {
				if (CommonFunctions::fileexists($filename="/etc/DISTRO_SPECS")
				   && CommonFunctions::rfts($filename, $buf, 0, 4096, false)
				   && preg_match('/^DISTRO_NAME=\'(.+)\'/m', $buf, $id_buf)) {
					if (isset($list[trim($id_buf[1])]['Name'])) {
						$dist = trim($list[trim($id_buf[1])]['Name']);
					} else {
						$dist = trim($id_buf[1]);
					}
					if (preg_match('/^DISTRO_VERSION=(.+)/m', $buf, $vers_buf)) {
						$this->sys->setDistribution(trim($dist." ".trim($vers_buf[1])));
					} else {
						$this->sys->setDistribution($dist);
					}
					if (isset($list[trim($id_buf[1])]['Image'])) {
						$this->sys->setDistributionIcon($list[trim($id_buf[1])]['Image']);
					} else {
						if (isset($list['Puppy']['Image'])) {
							$this->sys->setDistributionIcon($list['Puppy']['Image']);
						}
					}
				} elseif ((CommonFunctions::fileexists($filename="/etc/distro-release")
						&& CommonFunctions::rfts($filename, $buf, 1, 4096, false)
						&& !is_null($buf) && (trim($buf) != ""))
					|| (CommonFunctions::fileexists($filename="/etc/system-release")
						&& CommonFunctions::rfts($filename, $buf, 1, 4096, false)
						&& !is_null($buf) && (trim($buf) != ""))) {
					$this->sys->setDistribution(trim($buf));
					if (preg_match('/^(\S+)\s*/', preg_replace('/^Red\s+/', 'Red', $buf), $id_buf)
						&& isset($list[trim($id_buf[1])]['Image'])) {
							$this->sys->setDistributionIcon($list[trim($id_buf[1])]['Image']);
					}
				} elseif (CommonFunctions::fileexists($filename="/etc/solydxk/info")
				   && CommonFunctions::rfts($filename, $buf, 0, 4096, false)
				   && preg_match('/^DISTRIB_ID="?([^"\n]+)"?/m', $buf, $id_buf)) {
					if (preg_match('/^DESCRIPTION="?([^"\n]+)"?/m', $buf, $desc_buf)
					   && (trim($desc_buf[1])!=trim($id_buf[1]))) {
						$this->sys->setDistribution(trim($desc_buf[1]));
					} else {
						if (isset($list[trim($id_buf[1])]['Name'])) {
							$this->sys->setDistribution(trim($list[trim($id_buf[1])]['Name']));
						} else {
							$this->sys->setDistribution(trim($id_buf[1]));
						}
						if (preg_match('/^RELEASE="?([^"\n]+)"?/m', $buf, $vers_buf)) {
							$this->sys->setDistribution($this->sys->getDistribution()." ".trim($vers_buf[1]));
						}
						if (preg_match('/^CODENAME="?([^"\n]+)"?/m', $buf, $vers_buf)) {
							$this->sys->setDistribution($this->sys->getDistribution()." (".trim($vers_buf[1]).")");
						}
					}
					if (isset($list[trim($id_buf[1])]['Image'])) {
						$this->sys->setDistributionIcon($list[trim($id_buf[1])]['Image']);
					} else {
						$this->sys->setDistributionIcon($list['SolydXK']['Image']);
					}
				} elseif (CommonFunctions::fileexists($filename="/etc/os-release")
				   && CommonFunctions::rfts($filename, $buf, 0, 4096, false)
				   && (preg_match('/^TAILS_VERSION_ID="?([^"\n]+)"?/m', $buf, $tid_buf)
				   || preg_match('/^NAME="?([^"\n]+)"?/m', $buf, $id_buf))) {
					if (preg_match('/^TAILS_VERSION_ID="?([^"\n]+)"?/m', $buf, $tid_buf)) {
						if (preg_match('/^TAILS_PRODUCT_NAME="?([^"\n]+)"?/m', $buf, $desc_buf)) {
							$this->sys->setDistribution(trim($desc_buf[1])." ".trim($tid_buf[1]));
						} else {
							if (isset($list['Tails']['Name'])) {
								$this->sys->setDistribution(trim($list['Tails']['Name'])." ".trim($tid_buf[1]));
							} else {
								$this->sys->setDistribution('Tails'." ".trim($tid_buf[1]));
							}
						}
						$this->sys->setDistributionIcon($list['Tails']['Image']);
					} else {
						if (preg_match('/^PRETTY_NAME="?([^"\n]+)"?/m', $buf, $desc_buf)
						   && !preg_match('/\$/', $desc_buf[1])) { //if is not defined by variable
							$this->sys->setDistribution(trim($desc_buf[1]));
						} else {
							if (isset($list[trim($id_buf[1])]['Name'])) {
								$this->sys->setDistribution(trim($list[trim($id_buf[1])]['Name']));
							} else {
								$this->sys->setDistribution(trim($id_buf[1]));
							}
							if (preg_match('/^VERSION="?([^"\n]+)"?/m', $buf, $vers_buf)) {
								$this->sys->setDistribution($this->sys->getDistribution()." ".trim($vers_buf[1]));
							} elseif (preg_match('/^VERSION_ID="?([^"\n]+)"?/m', $buf, $vers_buf)) {
								$this->sys->setDistribution($this->sys->getDistribution()." ".trim($vers_buf[1]));
							}
						}
						if (isset($list[trim($id_buf[1])]['Image'])) {
							$this->sys->setDistributionIcon($list[trim($id_buf[1])]['Image']);
						}
					}
				} elseif (CommonFunctions::fileexists($filename="/etc/debian_version")) {
					if (!CommonFunctions::rfts($filename, $buf, 1, 4096, false)) {
						$buf = "";
					}
					if (isset($list['Debian']['Image'])) {
						$this->sys->setDistributionIcon($list['Debian']['Image']);
					}
					if (isset($list['Debian']['Name'])) {
						if (is_null($buf) || (trim($buf) == "")) {
							$this->sys->setDistribution($list['Debian']['Name']);
						} else {
							$this->sys->setDistribution($list['Debian']['Name']." ".trim($buf));
						}
					} else {
						if (is_null($buf) || (trim($buf) == "")) {
							$this->sys->setDistribution('Debian');
						} else {
							$this->sys->setDistribution(trim($buf));
						}
					}
				} elseif (CommonFunctions::fileexists($filename="/etc/config/uLinux.conf")
				   && CommonFunctions::rfts($filename, $buf, 0, 4096, false)
				   && preg_match("/^Rsync\sModel\s*=\s*QNAP/m", $buf)
				   && preg_match("/^Version\s*=\s*([\d\.]+)\r?\nBuild\sNumber\s*=\s*(\S+)/m", $buf, $ver_buf)) {
					$buf = $ver_buf[1]."-".$ver_buf[2];
					if (isset($list['QTS']['Image'])) {
						$this->sys->setDistributionIcon($list['QTS']['Image']);
					}
					if (isset($list['QTS']['Name'])) {
						$this->sys->setDistribution($list['QTS']['Name']." ".trim($buf));
					} else {
						$this->sys->setDistribution(trim($buf));
					}
				}
			}
			/* restore error level */
			error_reporting($old_err_rep);
			/* restore error handler */
			if (function_exists('errorHandlerPsi')) {
				set_error_handler('errorHandlerPsi');
			}
		}
	}

	/**
	 * Processes
	 *
	 * @return void
	 */
	protected function _processes()
	{
		$process = glob('/proc/*/status', GLOB_NOSORT);
		if (($total = count($process)) > 0) {
			$processes['*'] = 0;
			$buf = "";
			for ($i = 0; $i < $total; $i++) {
				if (CommonFunctions::rfts($process[$i], $buf, 0, 4096, false)) {
					$processes['*']++; //current total
					if (preg_match('/^State:\s+(\w)/m', $buf, $state)) {
						if (isset($processes[$state[1]])) {
							$processes[$state[1]]++;
						} else {
							$processes[$state[1]] = 1;
						}
					}
				}
			}
			if (!($processes['*'] > 0)) {
				$processes['*'] = $processes[' '] = $total; //all unknown
			}
			$this->sys->setProcesses($processes);
		}
	}

	/**
	 * get the information
	 *
	 * @see PSI_Interface_OS::build()
	 *
	 * @return Void
	 */
	public function build()
	{
		$this->_distro();
		$this->_hostname();
		$this->_kernel();
		$this->_machine();
		$this->_uptime();
		$this->_users();
		$this->_cpuinfo();
		$this->_pci();
		$this->_ide();
		$this->_scsi();
		$this->_usb();
		$this->_i2c();
		$this->_network();
		$this->_memory();
		$this->_filesystems();
		$this->_loadavg();
		$this->_processes();
	}
}