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<?php
/**
* PS Plugin, which displays all running processes
* a simple tree view which is filled with the running processes which are determined by
* calling the "ps" command line utility, another way is to provide
* a file with the output of the ps utility, so there is no need to run a execute by the
* webserver, the format of the command is written down in the phpsysinfo.ini file, where also
* the method of getting the information is configured
*
* @category PHP
* @package PSI_Plugin_PS
* @author Michael Cramer <BigMichi1@users.sourceforge.net>
* @copyright 2009 phpSysInfo
* @license http://opensource.org/licenses/gpl-2.0.php GNU General Public License version 2, or (at your option) any later version
* @version Release: 3.0
* @link http://phpsysinfo.sourceforge.net
*/
class PS extends PSI_Plugin
{
/**
* variable, which holds the content of the command
* @var array
*/
private $_filecontent = array();
/**
* 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)
{
parent::__construct(__CLASS__, $enc);
switch (strtolower(PSI_PLUGIN_PS_ACCESS)) {
case 'command':
if (PSI_OS == 'WINNT') {
try {
$objLocator = new COM('WbemScripting.SWbemLocator');
$wmi = $objLocator->ConnectServer('', 'root\CIMv2');
$os_wmi = CommonFunctions::getWMI($wmi, 'Win32_OperatingSystem', array('TotalVisibleMemorySize'));
$memtotal = 0;
foreach ($os_wmi as $os) {
$memtotal = $os['TotalVisibleMemorySize'] * 1024;
break;
}
$perf_wmi = CommonFunctions::getWMI($wmi, 'Win32_PerfFormattedData_PerfProc_Process', array('IDProcess', 'CreatingProcessID', 'PercentProcessorTime'));
$proccpu = array();
foreach ($perf_wmi as $perf) {
$proccpu[trim($perf['IDProcess'])] = array('ParentProcessId'=>trim($perf['CreatingProcessID']), 'PercentProcessorTime'=>trim($perf['PercentProcessorTime']));
}
$process_wmi = CommonFunctions::getWMI($wmi, 'Win32_Process', array('Caption', 'CommandLine', 'ProcessId', 'ParentProcessId', 'WorkingSetSize'));
foreach ($process_wmi as $process) {
if (strlen(trim($process['CommandLine'])) > 0) {
$ps = trim($process['CommandLine']);
} else {
$ps = trim($process['Caption']);
}
if (($procid = trim($process['ProcessId'])) != 0) {
$memusage = round(trim($process['WorkingSetSize']) * 100 / $memtotal, 1);
$parentid = trim($process['ParentProcessId']);
$cpu = 0;
if (isset($proccpu[$procid]) && ($proccpu[$procid]['ParentProcessId'] == $parentid)) {
$cpu = $proccpu[$procid]['PercentProcessorTime'];
}
//ParentProcessId
//Unique identifier of the process that creates a process. Process identifier numbers are reused, so they
//only identify a process for the lifetime of that process. It is possible that the process identified by
//ParentProcessId is terminated, so ParentProcessId may not refer to a running process. It is also
//possible that ParentProcessId incorrectly refers to a process that reuses a process identifier. You can
//use the CreationDate property to determine whether the specified parent was created after the process
//represented by this Win32_Process instance was created.
//=> subtrees of processes may be missing (WHAT TODO?!?)
$this->_filecontent[] = $procid." ".$parentid." ".$memusage." ".$cpu." ".$ps;
}
}
} catch (Exception $e) {
}
} else {
CommonFunctions::executeProgram("ps", "axo pid,ppid,pmem,pcpu,args", $buffer, PSI_DEBUG);
if (((PSI_OS == 'Linux') || (PSI_OS == 'Android')) && (!preg_match("/^[^\n]+\n\s*\d+\s+\d+\s+[\d\.]+\s+[\d\.]+\s+.+/", $buffer))) { //alternative method if no data
if (CommonFunctions::rfts('/proc/meminfo', $mbuf)) {
$bufe = preg_split("/\n/", $mbuf, -1, PREG_SPLIT_NO_EMPTY);
$totalmem = 0;
foreach ($bufe as $buf) {
if (preg_match('/^MemTotal:\s+(\d+)\s*kB/i', $buf, $ar_buf)) {
$totalmem = $ar_buf[1];
break;
}
}
$buffer = " PID PPID %MEM %CPU COMMAND\n";
$processlist = glob('/proc/*/status', GLOB_NOSORT);
if (is_array($processlist) && (($total = count($processlist)) > 0)) {
natsort($processlist); //first sort
$process = array();
foreach ($processlist as $processitem) { //second sort
$process[] = $processitem;
}
$buf = "";
for ($i = 0; $i < $total; $i++) {
if (CommonFunctions::rfts($process[$i], $buf, 0, 4096, false)) {
if (($totalmem != 0) && (preg_match('/^VmRSS:\s+(\d+)\s+kB/m', $buf, $tmppmem))) {
$pmem = round(100 * $tmppmem[1] / $totalmem, 1);
} else {
$pmem = 0;
}
$name = null;
if (CommonFunctions::rfts(substr($process[$i], 0, strlen($process[$i])-6)."cmdline", $namebuf, 0, 4096, false)) {
$name = str_replace(chr(0), ' ', trim($namebuf));
}
if (preg_match('/^Pid:\s+(\d+)/m', $buf, $tmppid) &&
preg_match('/^PPid:\s+(\d+)/m', $buf, $tmpppid) &&
preg_match('/^Name:\s+(.+)/m', $buf, $tmpargs)) {
$pid = $tmppid[1];
$ppid = $tmpppid[1];
$args = $tmpargs[1];
if ($name !== null) {
if ($name !== "") {
$args = $name;
} else {
$args = "[".$args."]";
}
}
$buffer .= $pid." ".$ppid." ".$pmem." 0.0 ".$args."\n";
}
}
}
}
}
}
}
break;
case 'data':
CommonFunctions::rfts(PSI_APP_ROOT."/data/ps.txt", $buffer);
break;
default:
$this->global_error->addConfigError("__construct()", "[ps] ACCESS");
break;
}
if (PSI_OS != 'WINNT') {
if (trim($buffer) != "") {
$this->_filecontent = preg_split("/\n/", $buffer, -1, PREG_SPLIT_NO_EMPTY);
unset($this->_filecontent[0]);
} 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;
}
$items = array();
foreach ($this->_filecontent as $roworig) {
$row = preg_split("/[\s]+/", trim($roworig), 5);
if (count($row) != 5) {
break;
}
foreach ($row as $key=>$val) {
$items[$row[0]][$key] = $val;
}
if ($row[1] !== $row[0]) {
$items[$row[1]]['childs'][$row[0]] = &$items[$row[0]];
}
}
foreach ($items as $item) { //find zombie
if (!isset($item[0])) {
foreach ($item["childs"] as $subitem) {
$zombie = $subitem[1];
if ($zombie != 0) {
$items[$zombie]["0"] = $zombie;
$items[$zombie]["1"] = "0";
$items[$zombie]["2"] = "0";
$items[$zombie]["3"] = "0";
$items[$zombie]["4"] = "unknown";
$items[0]['childs'][$zombie] = &$items[$zombie];
}
break; //first is sufficient
}
}
}
if (isset($items[0])) {
$this->_result = $items[0];
} else {
$this->_result = array();
}
}
/**
* generates the XML content for the plugin
*
* @return SimpleXMLElement entire XML content for the plugin
*/
public function xml()
{
if ($this->_result) {
$positions = array(0=>0);
$this->_addchild($this->_result['childs'], $this->xml, $positions);
}
return $this->xml->getSimpleXmlElement();
}
/**
* recursive function to allow appending child processes to a parent process
*
* @param array $child part of the array which should be appended to the XML
* @param SimpleXMLExtended $xml XML-Object to which the array content is appended
* @param array &$positions array with parent positions in xml structure
*
* @return SimpleXMLExtended Object with the appended array content
*/
private function _addchild($child, SimpleXMLExtended $xml, &$positions)
{
foreach ($child as $key=>$value) {
$xmlnode = $xml->addChild("Process");
if (isset($value[0])) {
array_push($positions, $value[0]);
$xmlnode->addAttribute('PID', $value[0]);
$parentid = array_search($value[1], $positions);
$xmlnode->addAttribute('ParentID', $parentid);
$xmlnode->addAttribute('PPID', $value[1]);
if (!defined('PSI_PLUGIN_PS_MEMORY_USAGE') || (PSI_PLUGIN_PS_MEMORY_USAGE !== false)) {
$xmlnode->addAttribute('MemoryUsage', $value[2]);
}
if (!defined('PSI_PLUGIN_PS_CPU_USAGE') || (PSI_PLUGIN_PS_CPU_USAGE !== false)) {
$xmlnode->addAttribute('CPUUsage', $value[3]);
}
$xmlnode->addAttribute('Name', $value[4]);
if ((PSI_OS !== 'WINNT') &&
((($parentid === 1) && (!defined('PSI_PLUGIN_PS_SHOW_PID1CHILD_EXPANDED') || (PSI_PLUGIN_PS_SHOW_PID1CHILD_EXPANDED === false)))
|| ((!defined('PSI_PLUGIN_PS_SHOW_KTHREADD_EXPANDED') || (PSI_PLUGIN_PS_SHOW_KTHREADD_EXPANDED === false)) && ($value[4] === "[kthreadd]")))) {
$xmlnode->addAttribute('Expanded', 0);
}
}
if (isset($value['childs'])) {
$this->_addChild($value['childs'], $xml, $positions);
}
}
return $xml;
}
}