C / C++ / MFC

8-May-02 0:12

Hi,

I need to create a program that could have the possibility of kill some exe's running ( I would send a notification to that exe's and if they don´t answer they are hanged.. so kill'em and restart them...).

The problem that I found is that I can only kill an exe if the process that wants to kill it, it´s the same the created it, ... is there another way to do that, or that is reserved to the Task Manager ?

Thanks in advance, greetings
Braulio

adara8-May-02 1:43

adara

8-May-02 1:43

you need to have SE_DEBUG_NAME privilege, then get a Handle to the process with OpenProcess() then call TerminateProcess() to kill the process

HANDLE OpenProcess(
DWORD dwDesiredAccess, // access flag
BOOL bInheritHandle, // handle inheritance option
DWORD dwProcessId // process identifier
);

BOOL TerminateProcess(
HANDLE hProcess, // handle to the process
UINT uExitCode // exit code for the process
);

Rose | [Rose]

Braulio Dez8-May-02 2:47

8-May-02 2:47

Thanks !

One question more, could you tell me a little bit more about the SE_DEBUG_NAME privilege ?, is a privilige that I set to my process or to other processes or... ?

Thanks a lot, greetings
Braulio

adara8-May-02 4:24

adara

8-May-02 4:24

HANDLE hToken;
if (OpenProcessToken(GetCurrentProcess(), TOKEN_ADJUST_PRIVILEGES, &hToken))
{
if (EnablePrivilege(hToken, SE_DEBUG_NAME, TRUE))
{
.....
}

BOOL EnablePrivilege(HANDLE hToken, LPCTSTR szPrivName, BOOL fEnable)
{
TOKEN_PRIVILEGES tp;
tp.PrivilegeCount = 1;
LookupPrivilegeValue(NULL, szPrivName, &tp.Privileges[0].Luid);
tp.Privileges[0].Attributes = fEnable ? SE_PRIVILEGE_ENABLED : 0;
AdjustTokenPrivileges(hToken, FALSE, &tp, sizeof(tp), NULL, NULL);
return((GetLastError() == ERROR_SUCCESS));
}

Nish Nishant8-May-02 4:08

Nish Nishant

8-May-02 4:08

Usually killing apps is done by posting a WM_CLOSE to their main window. But I guess you want to kill non-responding apps as well.

Nish

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Braulio Dez8-May-02 4:19

8-May-02 4:19

Hi Nish !

My main goal is to kill non-responding exe's apps ( well EXE com servers).

I need to have a system up and running 24 hours, and some of the exe's com server are not from my own, so if they f***ed up, my idea is to run a "trouble shooter" program that detects if the EXE server exists, if it is so, then it tries to connect if fails ( donno if this is easy to detect, glups !), then kill the EXE, or if I can connect just have a sink interface to now if it´s alive ( it would be like a "ping"), if something fails, kill the EXE...

Maybe I should use some framework for that stuff, but I feel lost with MSMQ and MTS, or the new stuff..., I don´t know if it´s only oriented for use in Web App's or...

Thanks Nish

Braulio

C^hris L^osinger8-May-02 4:20

C^hris L^osinger

8-May-02 4:20

what's your program's name? (i'll make sure i never let it near my PC). Smile | :)

-c

There ain't no second chance
Against the thing with the forty eyes, girl

Smaller Animals Software

Braulio Dez8-May-02 4:25

8-May-02 4:25

The name of the program is "VirusKiller.exe" XD :-P

I need it, because I will have some com EXE server that can hang, and I have not control over them ( the will be developed by third parties...), so if they crash, I want to detect it, and kill'em, and then restart the EXE server.

he he, but is not a bad idea for a Virus... Wink | ;-)

so long
Braulio

Mike Nordell9-May-02 21:20

Mike Nordell

9-May-02 21:20

My main goal is to kill non-responding exe's apps ( well EXE com servers).

Then be aware there are occasions you actually can't kill them. :-<

If there's an RPC call (synchronous) that's waiting for a response, the process you want to kill is actually "hanging" inside the kernel and can't be killed. This is one of the resons COM on Windows is hated by some of us: You can't kill a hung process!

Another way to display this would be to (disregarding what the documentation states, the docs lie) create a new file, SetFilePointer to some large value (like 2GB-1), and then SetEndOfFile.

Now do this on a disk that's not using DMA to see how a user-mode process chews away almost all available CPU. Try to kill it using e.g. TaskManager. :-<

But back to your problem: this is depending on what OS you are running under (no one can ever accuse Microsoft of "stable API's" when it comes to this).

If you're using an NT kernel OS you could use the PSAPI to EnumProcesses. Then iterate that set and OpenProcess, then EnumProcessModules and finally GetModuleBaseName to get the name of the process.

If that name fits what you want to kill you then OpenProcess(PROCESS_TERMINATE, FALSE, pid), terminate that process, and finally CloseHandle on the process handle you got from OpenProcess.

Simple, wasn't it. :-/

Braulio Dez10-May-02 3:08

10-May-02 3:08

Thanks for the help !

Then to control possible unstable COM EXE server what could I do ?, Should I for another solution better ?

My idea was to have a tool that would check the COM EXE servers of my system ( If I said any third party could add his owns exe servers... so I could be in trouble).

Then would be a better idea to use something like MTS or MSMQ, or some other big words technologies ? Smile | :)

( I wouldn´t like to say to the user... "please we have f***ed up, restart your system" Big Grin | :-D

).

Thanks for you help, so long
Braulio

slightly puzzled...

l a u r e n7-May-02 23:42

7-May-02 23:42

i am getting a bunch of these warning messages after my OnInitDialog() exits:

First-chance exception in 8028c.exe (KERNEL32.DLL): 0xC0000005: Access Violation.

and i have absolutely no idea why ... i traced it down into the depths of wincore.cpp and its friends but god only knows what they get up to when they're bored ... thing is my app doesn't go squiff even in release mode so i'm a wondering if its something i can ignore or should i be afraid ... very afraid
Confused | :confused:

"... and so i said to him ... if it can't dance and you can't eat it either f**k it or throw it away"
8028finder.com

Henk Groenewoud8-May-02 0:59

Henk Groenewoud

8-May-02 0:59

What does your code look like. It sounds like an initialization problem.

Roger Allen8-May-02 1:15

Roger Allen

8-May-02 1:15

Do you have an ActiveX control on your dialog? I get these when I have an in-house ActiveX control in use. I think the windows system is trying to access a default function that is not present or some such. Doesn't seem to affect how my program works.

Roger Allen
Sonork 100.10016

If I had a quote, it would be a very good one.

Jonathan Craig8-May-02 4:58

Jonathan Craig

8-May-02 4:58

I found this article in the MSDN:

INFO: First and Second Chance Exception Handling Q105675

It explains what you are seeing. There are many DLLs (and other code) that throw exceptions on purpose to see if things are valid. I have used this technique to check if memory-mapped files have real memory allocated for them. From the article, the debugger sees these exceptions before the application does. It creates a warning before a handler is able to catch the exception. Note that they must be getting handled or your application would crash.

I see them also in most of my applications and they are safe. I have written hundreds of applications and never seen these messages to be a problem.

Hope this helps... Smile | :)

Jonathan Craig
www.mcw-tech.com

l a u r e n8-May-02 5:07

Change size of Dialog of CFormView

8-May-02 5:07

awesome
thanks for the info
i wondered why my release build wasnt dying at the very least
Big Grin | :-D

"... and so i said to him ... if it can't dance and you can't eat it either f**k it or throw it away"
8028finder.com

WTL 7.0 COM Server

7-May-02 23:40

Hi
I have created a SDI application ( with COM server option ) using the new appwizard supplied with the WTL 7.0 toolkit. After adding a ATL simple object, I tried to access the interface from VB 6 to no avail?? Has anyone played around with these options?

The code generated by VS registers the object on the ROT, but using ye old ROT/COM viewer, I cannot see my object registered on the ROT when an instance of my SDI application is running. Any ideas?

Frans

sanskypotov7-May-02 23:31

sanskypotov

7-May-02 23:31

Hi,
I want to change the Dialog size of a CFormView, ( make it varable ).
Also I want to position the Dialog( CFormView ) at a
particular postion , when the Dialog( CFormView ) size is
greater than the MainFrame
Also the Mainframes size is kept constant.

Can someone please suggest towards this.

Thanks,
Sanksy Big Grin | :-D

Re: Change size of Dialog of CFormView

l a u r e n7-May-02 23:50

Re: Change size of Dialog of CFormView

7-May-02 23:50

sanskypotov wrote:
God is Good, all the Time.
All the Time, God is Good.

no offence meant but...
is this some kind of trick question?

"... and so i said to him ... if it can't dance and you can't eat it either f**k it or throw it away"
8028finder.com

sanskypotov8-May-02 0:01

sanskypotov

8-May-02 0:01

No Sir,
I hope that I have made it more precise and clear.
Thanks,
Sansky Big Grin | :-D

John 3:16

For God so loved the world,

that he gave his only begotten Son ( Jesus Christ ) ,

that whosoever believeth in him should not perish, but have everlasting life.

Re: Change size of Dialog of CFormView

l a u r e n8-May-02 0:20