static string PreprocessScript(string script, string outFile, LogProgress progress)
{
// Insert the output path in the script
script = script.Replace("{LOG_FILE}", outFile);
// Set the proper intruction pointer register
script = script.Replace("{INSTRUCT_PTR}", is32bitDump ? "@eip" : "@rip");
// Adapt or remove the progress information
if (progress != null)
{
script = progress.PrepareScript(script, outFile, is32bitDump);
}
else
{
script = LogProgress.RemoveProgressMark(script);
}
return(script);
}
// Launches the debugger, which automatically executes a script and stores the output into a file
public static void LaunchDebugger(string script, string outFile, bool showProgress = false)
{
LogProgress progress = showProgress ? new LogProgress() : null;
// Set the path of the temporary script file
string scriptFile = Path.Combine(Path.GetTempPath(), "WinDbgScript.txt");
// Replace special marks in the original script
script = PreprocessScript(script, outFile, progress);
// Remove old files
File.Delete(scriptFile);
File.Delete(outFile);
// Create the script file
using (StreamWriter stream = new StreamWriter(scriptFile))
stream.WriteLine(script);
// Start the debugger
string arguments = string.Format(@"-y ""{0};srv*{1}*http://msdl.microsoft.com/download/symbols"" -z ""{2}"" -c ""$$><{3};q""",
config.PdbFolder, config.SymbolCache, config.DumpFile, scriptFile);
ProcessStartInfo psi = new ProcessStartInfo
{
FileName = GetDebugger(),
Arguments = arguments,
CreateNoWindow = true,
WindowStyle = ProcessWindowStyle.Hidden // WinDBG will only hide the main window
};
Process process = new Process();
process.StartInfo = psi;
if (!process.Start())
{
throw new Exception("The debugger could not be launched.");
}
Task <bool> task = LaunchDebuggerAsync(process);
while (!task.IsCompleted)
{
task.Wait(500);
if (showProgress)
{
progress.ShowLogProgress();
}
}
bool exited = task.Result;
File.Delete(scriptFile);
if (!exited)
{
process.Kill();
throw new Exception(String.Format("Execution has been cancelled after {0} minutes.", config.DbgTimeout));
}
if (process.ExitCode != 0)
{
throw new Exception("The debugger did not finish properly.");
}
if (showProgress)
{
progress.DeleteProgressFile();
}
// Check that the output log has been generated
if (!File.Exists(outFile))
{
throw new Exception("The debugger did not generate any output.");
}
}
