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using PKISharp.WACS.Services;
using System;
using System.Diagnostics;
using System.Text;
using System.Threading.Tasks;
namespace PKISharp.WACS.Clients
{
public class ScriptClient
{
protected ILogService _log;
protected ISettingsService _settings;
public ScriptClient(ILogService logService, ISettingsService settings)
{
_log = logService;
_settings = settings;
}
public async Task RunScript(string script, string parameters)
{
if (!string.IsNullOrWhiteSpace(script))
{
var actualScript = Environment.ExpandEnvironmentVariables(script);
var actualParameters = parameters;
if (actualScript.EndsWith(".ps1"))
{
actualScript = "powershell.exe";
actualParameters = $"-windowstyle hidden -noninteractive -executionpolicy bypass .'{script}' {parameters.Replace("\"", "\"\"\"")}";
}
var PSI = new ProcessStartInfo(actualScript)
{
RedirectStandardInput = true,
RedirectStandardOutput = true,
StandardOutputEncoding = Encoding.UTF8,
StandardErrorEncoding = Encoding.UTF8,
RedirectStandardError = true,
UseShellExecute = false,
CreateNoWindow = true
};
if (!string.IsNullOrWhiteSpace(actualParameters))
{
_log.Information(LogType.All, "Script {script} starting with parameters {parameters}", script, parameters);
PSI.Arguments = actualParameters;
}
else
{
_log.Information(LogType.All, "Script {script} starting", script);
}
try
{
using var process = new Process { StartInfo = PSI };
var output = new StringBuilder();
process.OutputDataReceived += (s, e) =>
{
if (e.Data != null)
{
output.AppendLine(e.Data);
_log.Verbose(e.Data);
}
else
{
_log.Verbose("Process output without data received");
}
};
process.ErrorDataReceived += (s, e) =>
{
if (!string.IsNullOrWhiteSpace(e.Data) && !string.Equals(e.Data, "null"))
{
output.AppendLine($"Error: {e.Data}");
_log.Error("Script error: {0}", e.Data);
}
else
{
_log.Verbose("Process error without data received");
}
};
var exited = false;
process.EnableRaisingEvents = true;
process.Exited += (s, e) =>
{
_log.Information(LogType.Event | LogType.Disk, output.ToString());
exited = true;
if (process.ExitCode != 0)
{
_log.Error("Script finished with exit code {code}", process.ExitCode);
}
else
{
_log.Information("Script finished");
}
};
if (process.Start())
{
_log.Debug("Process launched: {actualScript} (ID: {Id})", actualScript, process.Id);
}
else
{
throw new Exception("Process.Start() returned false");
}
process.BeginErrorReadLine();
process.BeginOutputReadLine();
process.StandardInput.Close(); // Helps end the process
var totalWait = 0;
var interval = 2000;
while (!exited && totalWait < _settings.Script.Timeout * 1000)
{
await Task.Delay(interval);
totalWait += interval;
_log.Verbose("Waiting for process to finish...");
}
if (!exited)
{
_log.Error($"Script execution timed out after {_settings.Script.Timeout} seconds, trying to kill");
try
{
process.Kill();
}
catch (Exception ex)
{
_log.Error(ex, "Killing process {Id} failed", process.Id);
}
}
}
catch (Exception ex)
{
_log.Error(ex, "Script is unable to start");
}
}
else
{
_log.Warning("No script configured.");
}
}
}
}
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