CODEWITHSUNDEEP
phppowershellexec
Daryl Gill
Daryl Gill

Reputation: 5524

Exec To Powershell returns different from running directly to Powershell

I have the following code implemented: 

$ServiceName = $_GET['Service'];
exec("echo . | powershell.exe -c get-service ".$ServiceName,$OutputArray);
        echo "<pre>";
            print_r($OutputArray);
        echo "</pre>";

My $ServiceName is assigned through get, but for this example. 

$_GET['Service'] = "WinRM"; // Service Name is assigned to WinRM For *Windows Remote Management*

Now.. When I run this script, I get the following: 

Array
(
    [0] => Get-Service : Cannot find any service with service name 'WinRM'.
    [1] => At line:1 char:12
    [2] => + get-service <<<<  WinRM
    [3] =>     + CategoryInfo          : ObjectNotFound: (WinRM:String) [Get-Service], Se
    [4] =>    rviceCommandException
    [5] =>     + FullyQualifiedErrorId : NoServiceFoundForGivenName,Microsoft.PowerShell.
    [6] =>    Commands.GetServiceCommand
    [7] => 
)

Now, when I open Powershell, and run the following:

get-service WinRM I get returned with the following output: 

PS C:\Users\Administrator> get-service WinRM

Status   Name               DisplayName
------   ----               -----------
Running  WinRM              Windows Remote Management (WS-Manag...

This happens on a few other service names such as:

$Array = array(
        "DNSServer" => "DNS",
        "DHCP Client" => "DHCP",
        "Web Server" => "IISADMIN",
        "Windows Remote Management" => "WinRM"
    );

This fails on DNS, IISADMIN, WinRM in this example... But again, from PS I get returned with: 

PS C:\Users\Administrator> get-service DNS,IISADMIN,WinRM

Status   Name               DisplayName
------   ----               -----------
Running  DNS                DNS Server
Running  IISADMIN           IIS Admin Service
Running  WinRM              Windows Remote Management (WS-Manag...

My overall question is how to improve the reporting from Powershell to PHP and get accurate results from both ends?

This Does succeed some of the time depending on the service name. For example:

$ServiceName = "DHCP"; -- Which is why this Name is not included in the error debugging.. I get returned with: 

Array
(
    [0] => 
    [1] => Status   Name               DisplayName
    [2] => ------   ----               -----------
    [3] => Running  DHCP               DHCP Client
    [4] => 
    [5] => 
)

Which is what I am looking for.

Upvotes: 1

Views: 528

Answers (1)

Gordon
Gordon

Reputation: 317119

Instead of Powershell, consider querying the machine via COM and WMI:

$wmi = new COM('WinMgmts:{impersonationLevel=impersonate}!root/cimv2');
$result = $wmi->ExecQuery('Select * from Win32_Service where Name="Dhcp"');
foreach ($result as $share) {
    printf(
        'Service: %s - Status: %s %s',
        $share->Name,
        $share->Status,
        PHP_EOL
    );
}

This will print

Service: Dhcp - Status: OK

The available properties for Win32_Service are listed here:

An alternative would be to exec wmic:

exec('wmic Service where name="DHCP" get name, status /format:csv', $services);

Content of $services would then be

Array
(
    [0] => 
    [1] => Node,Name,Status
    [2] => MYCOMPUTER,Dhcp,OK
)

You can parse this easily with fgetcsv. An alternate and easy to parse format would be rawxml instead of csv. See http://technet.microsoft.com/en-us/library/cc757287(v=ws.10).aspx for details

Upvotes: 1

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