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 Topic: Performing remote shutdown via perl cgi [SOLVED] |
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gianni24
Joined: 23 Jan 2015
Posts: 5
Location: italy, bracciano
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 Posted: Mon 26 Jan '15 10:34 Post subject: Performing remote shutdown via perl cgi [SOLVED] |
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Hello everybody,
I'm new to this forum, and hope someone can help me and put me trough in solving this annoying problem.
I've got at home one server running various services, some home based intranet site, and one useful "home lan control" that allows me to check the status and control every computer on my lan. The computer is running Xp Pro sp3, and I've got Apache 2.2.1 32 bit installed, with no ssl. I'm planning to upgrade the OS to Windows 7 64bit, so I've build a second server with the new OS, and set up the same Apache version on it.
What's happening in short: I cannot use the system command c:\windows\system32\shutdown.exe trough apache because the system is returning this error:
ERROR_ENVVAR_NOT_FOUND
To make sure is not depending on apache version I've tried the same with Apache 2.2.1 32bit, Apache 2.2.1 64 and Apache 2.4.3 64 bit. I'v tried too on a second windows7 64 bit machine too, with same result. Obviously I've already set apache services to run as account with sufficient privileges (acqually is an admin account).
If someone want to help me please use this simple perl cgi:
| Code: | $cmd="shutdown.exe /?";
$rc=`$cmd 2>&1`;
print "Content-type: text/html\n\n";
print "$cmd<br><pre>$rc</pre>"; |
On XP the result is the help page of the shutdown command, on Win7 the result is the text message associated with the error depicted above. Launching the offending script direclty from commandline gives good result in both OSs.
Any help would be appreciated, even alternatives to the use of shutdown.exe in order to shutdown or restart remote machines on my net.
Thank you so much for any help coming 
Last edited by gianni24 on Fri 30 Jan '15 9:19; edited 1 time in total |
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glsmith
Moderator
Joined: 16 Oct 2007
Posts: 2268
Location: Sun Diego, USA
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| Posted: Mon 26 Jan '15 18:53 Post subject: Re: Performing remote shutdown via perl cgi |
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| gianni24 wrote: | | (acqually is an admin account |
Actually, no it's not. It's just an account that is able to ask for Administrator privileges as needed. That was a big change beginning in Vista to help keep infections down. There is only one true admin account "Administrator" and is disabled by default.
You could turn off the UAC but I really would not advise doing that, it's an option however.
If it's a pro/ultimate version of 7 then you could always remote desktop in, right-click on the command prompt shortcut and choose "Run as Administrator" and then issue the command. This is what I do. |
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gianni24
Joined: 23 Jan 2015
Posts: 5
Location: italy, bracciano
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| Posted: Tue 27 Jan '15 18:11 Post subject: Re: Performing remote shutdown via perl cgi |
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| Quote: | | Actually, no it's not. It's just an account that is able to ask for Administrator privileges as needed. That was a big change beginning in Vista to help keep infections down. There is only one true admin account "Administrator" and is disabled by default. |
Thankyou for pointing this out. The user I'm using to run Apache is the user I use to log on the computer, is not administrator, but has admin privileges.
I've changed the owner of shutdown.exe to this user too.
| Quote: | | You could turn off the UAC but I really would not advise doing that, it's an option however. |
I've tried turning off UAC with no joy.
| Quote: | | If it's a pro/ultimate version of 7 then you could always remote desktop in, right-click on the command prompt shortcut and choose "Run as Administrator" and then issue the command. This is what I do. |
The OS is Windows 7 Professional sp1. The machine is headless so I log on to it ONLY trough rdp.
Wich command I'm supposed to run as admin? If you're suggesting running httpd from commandline I've tried too, same result.
Let me add this info: shutdown.exe is the ONLY command I need that's non working when launched under apache, I've tried many others and all of them are working fine. |
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glsmith
Moderator
Joined: 16 Oct 2007
Posts: 2268
Location: Sun Diego, USA
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| Posted: Tue 27 Jan '15 19:21 Post subject: Re: Performing remote shutdown via perl cgi |
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| gianni24 wrote: | | Wich command I'm supposed to run as admin? If you're suggesting running httpd from commandline I've tried too, same result. |
shutdown.exe |
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gianni24
Joined: 23 Jan 2015
Posts: 5
Location: italy, bracciano
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| Posted: Wed 28 Jan '15 14:46 Post subject: |
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shutdown.exe is working fine from the commandline.
Furthermore the perl script I've put in the post is working too, if launched from commandline and not from apache.
The problem seems in effects to be related with some environment variable shutdown is searching for and NOT founding when executing through apache.
Unfortunately I've got no idea of which env variable shutdown is needing... |
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James Blond
Moderator
Joined: 19 Jan 2006
Posts: 7294
Location: Germany, Next to Hamburg
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| Posted: Wed 28 Jan '15 16:15 Post subject: |
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| Did you try the fullpath to shutdown.exe ? |
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gianni24
Joined: 23 Jan 2015
Posts: 5
Location: italy, bracciano
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| Posted: Fri 30 Jan '15 8:38 Post subject: |
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| James Blond wrote: | | Did you try the fullpath to shutdown.exe ? |
Yes sure, it make no difference.
Shutdown.exe starts under apache, but it can't find some env var (not telling me which one)...
I've used a script like this one to see env var avaliable at time of launch:
print ("Content-type: text/html\n\n");
print "<h1>variabili d'ambiente</h1>\n";
print "\$0 = $0<br>\n";
foreach $key (sort keys(%ENV)) {
print "\$ENV{'$key'} = $ENV{$key}<br>\n";
}
This script can be run from commandline and/or via apache. This are the results under xp and win7 sp1 64bit:
win7 commandline
| Code: | Content-type: text/html
<h1>variabili d'ambiente</h1>
$0 = E:\siti\www\cgi\env.pl<br>
$ENV{'ALLUSERSPROFILE'} = C:\ProgramData<br>
$ENV{'APPDATA'} = C:\Users\gianni\AppData\Roaming<br>
$ENV{'CLIENTNAME'} = GIANNIV<br>
$ENV{'COMMONPROGRAMFILES'} = C:\Program Files (x86)\Common Files<br>
$ENV{'COMMONPROGRAMFILES(X86)'} = C:\Program Files (x86)\Common Files<br>
$ENV{'COMMONPROGRAMW6432'} = C:\Program Files\Common Files<br>
$ENV{'COMPUTERNAME'} = SERVA<br>
$ENV{'COMSPEC'} = C:\Windows\system32\cmd.exe<br>
$ENV{'FP_NO_HOST_CHECK'} = NO<br>
$ENV{'HOMEDRIVE'} = C:<br>
$ENV{'HOMEPATH'} = \Users\gianni<br>
$ENV{'LOCALAPPDATA'} = C:\Users\gianni\AppData\Local<br>
$ENV{'LOGONSERVER'} = \\SERVA<br>
$ENV{'NUMBER_OF_PROCESSORS'} = 4<br>
$ENV{'OS'} = Windows_NT<br>
$ENV{'PATH'} = C:\Windows\system32;C:\Program Files (x86)\ImageMagick;C:\Windows\System32\WindowsPowerShell\v1.0\;C:\Windows\System32\Wbem;C:\Windows;C:\Program Files (x86)\Perl\bin\<br>
$ENV{'PATHEXT'} = .COM;.EXE;.BAT;.CMD;.VBS;.VBE;.JS;.JSE;.WSF;.WSH;.MSC<br>
$ENV{'PROCESSOR_ARCHITECTURE'} = x86<br>
$ENV{'PROCESSOR_ARCHITEW6432'} = AMD64<br>
$ENV{'PROCESSOR_IDENTIFIER'} = AMD64 Family 16 Model 4 Stepping 3, AuthenticAMD<br>
$ENV{'PROCESSOR_LEVEL'} = 16<br>
$ENV{'PROCESSOR_REVISION'} = 0403<br>
$ENV{'PROGRAMDATA'} = C:\ProgramData<br>
$ENV{'PROGRAMFILES'} = C:\Program Files (x86)<br>
$ENV{'PROGRAMFILES(X86)'} = C:\Program Files (x86)<br>
$ENV{'PROGRAMW6432'} = C:\Program Files<br>
$ENV{'PROMPT'} = $P$G<br>
$ENV{'PSMODULEPATH'} = C:\Windows\system32\WindowsPowerShell\v1.0\Modules\<br>
$ENV{'PUBLIC'} = C:\Users\Public<br>
$ENV{'SESSIONNAME'} = RDP-Tcp#0<br>
$ENV{'SYSTEMDRIVE'} = C:<br>
$ENV{'SYSTEMROOT'} = C:\Windows<br>
$ENV{'TEMP'} = E:\Temp<br>
$ENV{'TMP'} = E:\Temp<br>
$ENV{'USERDOMAIN'} = Serva<br>
$ENV{'USERNAME'} = gianni<br>
$ENV{'USERPROFILE'} = C:\Users\gianni<br>
$ENV{'WINDIR'} = C:\Windows<br>
$ENV{'WINDOWS_TRACING_FLAGS'} = 3<br>
$ENV{'WINDOWS_TRACING_LOGFILE'} = C:\BVTBin\Tests\installpackage\csilogfile.log<br>
$ENV{'__COMPAT_LAYER'} = RunAsAdmin<br>
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Win7 Apache
| Code: | variabili d'ambiente
$0 = E:\siti\www\cgi\env.pl
$ENV{'COMSPEC'} = C:\Windows\system32\cmd.exe
$ENV{'DOCUMENT_ROOT'} = E:/siti/www
$ENV{'GATEWAY_INTERFACE'} = CGI/1.1
$ENV{'HTTP_ACCEPT'} = text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8
$ENV{'HTTP_ACCEPT_ENCODING'} = gzip, deflate
$ENV{'HTTP_ACCEPT_LANGUAGE'} = it-IT,it;q=0.8,en-US;q=0.5,en;q=0.3
$ENV{'HTTP_CONNECTION'} = keep-alive
$ENV{'HTTP_HOST'} = serva
$ENV{'HTTP_USER_AGENT'} = Mozilla/5.0 (Windows NT 6.1; WOW64; rv:28.0) Gecko/20100101 Firefox/28.0
$ENV{'PATH'} = C:\Windows\system32;C:\Program Files (x86)\ImageMagick;C:\Windows\System32\WindowsPowerShell\v1.0\;C:\Windows\System32\Wbem;C:\Windows;C:\Program Files (x86)\Perl\bin\
$ENV{'PATHEXT'} = .COM;.EXE;.BAT;.CMD;.VBS;.VBE;.JS;.JSE;.WSF;.WSH;.MSC
$ENV{'QUERY_STRING'} =
$ENV{'REMOTE_ADDR'} = 127.0.0.1
$ENV{'REMOTE_PORT'} = 49176
$ENV{'REQUEST_METHOD'} = GET
$ENV{'REQUEST_URI'} = /cgi/env.pl
$ENV{'SCRIPT_FILENAME'} = E:/siti/www/cgi/env.pl
$ENV{'SCRIPT_NAME'} = /cgi/env.pl
$ENV{'SCRIPT_URI'} = http://serva/cgi/env.pl
$ENV{'SCRIPT_URL'} = /cgi/env.pl
$ENV{'SERVER_ADDR'} = 127.0.0.1
$ENV{'SERVER_ADMIN'} = gianni24@techie.com
$ENV{'SERVER_NAME'} = serva
$ENV{'SERVER_PORT'} = 80
$ENV{'SERVER_PROTOCOL'} = HTTP/1.1
$ENV{'SERVER_SIGNATURE'} =
$ENV{'SERVER_SOFTWARE'} = Apache/2.2.21 (Win64)
$ENV{'SYSTEMROOT'} = C:\Windows
$ENV{'WINDIR'} = C:\Windows
$ENV{'__COMPAT_LAYER'} = RunAsAdmin |
Xp Commandline
| Code: | Content-type: text/html
<h1>variabili d'ambiente</h1>
$0 = E:\siti\www\cgi\env.pl<br>
$ENV{'ALLUSERSPROFILE'} = C:\Documents and Settings\All Users<br>
$ENV{'APPDATA'} = C:\Documents and Settings\gianni\Dati applicazioni<br>
$ENV{'CLIENTNAME'} = Console<br>
$ENV{'COMMONPROGRAMFILES'} = C:\Programmi\File comuni<br>
$ENV{'COMPUTERNAME'} = MULO<br>
$ENV{'COMSPEC'} = C:\WINDOWS\system32\cmd.exe<br>
$ENV{'FP_NO_HOST_CHECK'} = NO<br>
$ENV{'HOMEDRIVE'} = C:<br>
$ENV{'HOMEPATH'} = \Documents and Settings\gianni<br>
$ENV{'LOGONSERVER'} = \\MULO<br>
$ENV{'NUMBER_OF_PROCESSORS'} = 4<br>
$ENV{'OS'} = Windows_NT<br>
$ENV{'PATH'} = C:\Programmi\ImageMagick;C:\PROGRA~1\ULTRAE~1;C:\Programmi\ATI Technologies\ATI.ACE\Core-Static;C:\WINDOWS\System32\Wbem;C:\WINDOWS;C:\WINDOWS\system32;C:\Programmi\Perl\bin\;C:\Programmi\CVSNT\<br>
$ENV{'PATHEXT'} = .COM;.EXE;.BAT;.CMD;.VBS;.VBE;.JS;.JSE;.WSF;.WSH<br>
$ENV{'PROCESSOR_ARCHITECTURE'} = x86<br>
$ENV{'PROCESSOR_IDENTIFIER'} = x86 Family 16 Model 5 Stepping 2, AuthenticAMD<br>
$ENV{'PROCESSOR_LEVEL'} = 16<br>
$ENV{'PROCESSOR_REVISION'} = 0502<br>
$ENV{'PROGRAMFILES'} = C:\Programmi<br>
$ENV{'PROMPT'} = $P$G<br>
$ENV{'SESSIONNAME'} = Console<br>
$ENV{'SYSTEMDRIVE'} = C:<br>
$ENV{'SYSTEMROOT'} = C:\WINDOWS<br>
$ENV{'TEMP'} = E:\Temp<br>
$ENV{'TMP'} = E:\Temp<br>
$ENV{'USERDOMAIN'} = MULO<br>
$ENV{'USERNAME'} = gianni<br>
$ENV{'USERPROFILE'} = C:\Documents and Settings\gianni<br>
$ENV{'WINDIR'} = C:\WINDOWS<br>
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Xp Apache
| Code: | variabili d'ambiente
$0 = E:\siti\www\cgi\env.pl
$ENV{'COMSPEC'} = C:\WINDOWS\system32\cmd.exe
$ENV{'DOCUMENT_ROOT'} = E:/siti/www
$ENV{'GATEWAY_INTERFACE'} = CGI/1.1
$ENV{'HTTP_ACCEPT'} = text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8
$ENV{'HTTP_ACCEPT_ENCODING'} = gzip, deflate
$ENV{'HTTP_ACCEPT_LANGUAGE'} = it-IT,it;q=0.8,en-US;q=0.5,en;q=0.3
$ENV{'HTTP_CONNECTION'} = keep-alive
$ENV{'HTTP_HOST'} = xphost
$ENV{'HTTP_USER_AGENT'} = Mozilla/5.0 (Windows NT 5.1; rv:28.0) Gecko/20100101 Firefox/28.0
$ENV{'PATH'} = C:\Programmi\ImageMagick;C:\PROGRA~1\ULTRAE~1;C:\Programmi\ATI Technologies\ATI.ACE\Core-Static;C:\WINDOWS\System32\Wbem;C:\WINDOWS;C:\WINDOWS\system32;C:\Programmi\Perl\bin\;C:\Programmi\CVSNT\
$ENV{'PATHEXT'} = .COM;.EXE;.BAT;.CMD;.VBS;.VBE;.JS;.JSE;.WSF;.WSH
$ENV{'QUERY_STRING'} =
$ENV{'REMOTE_ADDR'} = 127.0.0.1
$ENV{'REMOTE_PORT'} = 1686
$ENV{'REQUEST_METHOD'} = GET
$ENV{'REQUEST_URI'} = /cgi/env.pl
$ENV{'SCRIPT_FILENAME'} = E:/siti/www/cgi/env.pl
$ENV{'SCRIPT_NAME'} = /cgi/env.pl
$ENV{'SCRIPT_URI'} = http://xphost/cgi/env.pl
$ENV{'SCRIPT_URL'} = /cgi/env.pl
$ENV{'SERVER_ADDR'} = 127.0.0.1
$ENV{'SERVER_ADMIN'} = gianni24@techie.com
$ENV{'SERVER_NAME'} = xphost
$ENV{'SERVER_PORT'} = 80
$ENV{'SERVER_PROTOCOL'} = HTTP/1.1
$ENV{'SERVER_SIGNATURE'} =
$ENV{'SERVER_SOFTWARE'} = Apache/2.2.21 (Win32)
$ENV{'SYSTEMROOT'} = C:\WINDOWS
$ENV{'WINDIR'} = C:\WINDOWS |
Maybe you can get something out of it
Last edited by gianni24 on Fri 30 Jan '15 9:40; edited 1 time in total |
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gianni24
Joined: 23 Jan 2015
Posts: 5
Location: italy, bracciano
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| Posted: Fri 30 Jan '15 9:25 Post subject: |
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SOLVED
Thank you so much to help me to "activate" my brain.
After posting the former answer I've asked myself: "why I can't provide shutdown with the env var he need?"
I've compared the env var avaliable at commandline with the one avaliable via Apache. Then I've added (BEFORE calling shutdown) a "set" for all the missing variables, and this way the command was working!! After a little binary search COMPUTERNAME turned out to be the "offending" env var.
In short to fix the strange behaviour of shutdown I've added the following lines to my perl script, before calling it:
| Code: | $name=`hostname`;
$name=~s@\n@@gs;
$ENV{'COMPUTERNAME'}=$name; |
et voila' the script is working fine now!!
I've changed the subj of my first post adding [SOLVED] hope this can help someone else too! |
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