/// <summary>
// Installs the Windows NT Service. Uses a transacted installer, so that
// if installation fails midstream for some reason, installation is rolled
// back. Post installation, the registry settings for the service are modified
// to change the command-line parameters (because currently, CLR does not allow it)
// If registry modification fails for some reason, uninstall is called on the service.
/// </summary>
/// <param name="svcname">Service to install</param>
/// <param name="username">User name to execute under</param>
/// <param name="password">Password of the user</param>
public static void Install(
string svcname,
string username,
string password)
{
bool doUninstall = false;
try
{
Global.WriteStatus("External Activator is installing as NT service '" + svcname + "' ...");
TransactedInstaller ti = new TransactedInstaller();
// Sets information required for installing (might get username and password information from the user)
ProjectInstaller mi = new ProjectInstaller(svcname, username, password);
ti.Installers.Add(mi);
String path = String.Format("/assemblypath={0}",
System.Reflection.Assembly.GetExecutingAssembly().Location);
String[] cmdline = { path };
InstallContext ctx = new InstallContext(String.Format(svcname + ".InstallLog"), cmdline);
ti.Context = ctx;
// Starts the installation process
ti.Install(new Hashtable());
doUninstall = true;
// Registry modification of Command-Line arguments to include (-svc) followed by the service name
// to install it as a particular External Activator.
RegistryKey key = Registry.LocalMachine.OpenSubKey(String.Format("System\\CurrentControlSet\\Services\\{0}", svcname), true);
object ImagePathObject = key.GetValue("ImagePath");
if (ImagePathObject != null)
{
Global.WriteDebugInfo("Modifying the registry to include command-line parameters after installation.");
string ImagePath = String.Format("{0} /{1}:{2}", (string)ImagePathObject, CommandLineArgument.RunAsNTServiceArgument, svcname);
key.SetValue("ImagePath", ImagePath);
}
else
{
// Calls Uninstall if registry modification not possible
throw new EAException("Critical Error : Could not open ImagePath key of NT service '" + svcname + "' in the registry. Uninstalling service", Error.postInstallProblem);
}
Global.WriteStatus("External Activator is successfully installed as NT service '" + svcname + "' ...");
}
catch (Exception e)
{
if (doUninstall)
{
try
{
NTService.Uninstall(svcname);
}
catch (Exception eNested)
{
EAException.Report(eNested);
}
}
throw new EAException("External Activation Installation failed", Error.installProblem, e);
}
}
/// <summary>
// Uninstalls the Windows NT Service. Uses a transacted installer, so that
// if installation fails midstream for some reason, installation is rolled
// back.
/// </summary>
/// <param name="svcname">Service to uninstall</param>
public static void Uninstall(string svcname)
{
try
{
Global.WriteStatus("External Activator is uninstalling service " + svcname + "...");
TransactedInstaller ti = new TransactedInstaller();
ProjectInstaller mi = new ProjectInstaller(svcname, null, null);
ti.Installers.Add(mi);
String path = String.Format("/assemblypath={0}",
System.Reflection.Assembly.GetExecutingAssembly().Location);
String[] cmdline = { path };
InstallContext ctx = new InstallContext(String.Format(svcname + ".InstallLog"), cmdline);
ti.Context = ctx;
ti.Uninstall(null);
Global.WriteStatus("External Activator service '" + svcname + "' uninstaled successfully.");
}
catch (Exception e)
{
throw new EAException("External Activator service '" + svcname + "' uninstalling failed!", Error.unexpectedError, e);
}
}
