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POASP.net webservice security preventing WndProc & run with parameters
 

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  1. POASP.net webservice security preventing WndProc & run with parameters
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    <p>I have a webservice with a couple of methods that attempt to run or message another .EXE on the system to do a specific task.</p> <p>Either we can start the .EXE process with certain parameters or send it a WndProc message to make it do the desired operation. This works fine locally on my system calling the exe with parameters in cmd or sending a WndProc message from the webservice when debugging it in Visual Studio.</p> <p>None of this works over a real environment however. I had the run .Exe with parameters method (DoSomething) write the exception to a file:</p> <pre><code>System.ComponentModel.Win32Exception (0x80004005): No Access at System.Diagnostics.Process.StartWithShellExecuteEx(ProcessStartInfo startInfo) at System.Diagnostics.Process.Start() at Someprogram.ProgramService.DoSomething(String text) </code></pre> <p>The other method for wndproc sendmessage I wrapped in a try/catch as well but no exception thrown. It actually locates the process though as I had it print a file:</p> <pre><code>public static void SendMessageToSomeProgram(string message) { Process[] processes = Process.GetProcessesByName("SomeProgram"); if (processes.Length &gt;= 1) { //iterate through all running target applications foreach (Process p in processes) { //test write if process found TextWriter tw = new StreamWriter(@"c:\wndprocfile.txt"); //this file is printed tw.WriteLine(DateTime.Now.ToString()); tw.Close(); //do stuff try { byte[] sarr = System.Text.Encoding.Default.GetBytes(message); int len = sarr.Length; COPYDATASTRUCT cds; cds.dwData = (IntPtr)100; cds.lpData = message; cds.cbData = len + 1; SendMessage(p.MainWindowHandle, WM_COPYDATA, 0, ref cds); } catch (Exception ex) { TextWriter tw2 = new StreamWriter(@"c:\wndProc_errorfile.txt"); //not printed tw2.WriteLine(DateTime.Now.ToString() + "Exception: " + ex.ToString()); tw2.Close(); } } } </code></pre> <p>Now I see why it's nice to have security like this in place but is there an easy way around this? Maybe just some settings in IIS?</p> <p>UPDATED INFO: The server is running IIS 5.1 so no Application Pool feature.</p>
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