// Sometimes, it's necessary to run a program via JavaScript instead of directly via an MSI CA.
// For example, it might be easier to locate the program or construct the command line in JavaScript than by
// trying to craft some set of SetProperty CA's to do the same thing. Or, for example, InstallShield LE just
// won't let you. This script demonstrates how to run a program and is designed to be run as a Deferred mode CA.
var ClassName_ScriptingRuntimeShell = "WScript.Shell";
var argumentString = "";
var installDir = "";
var programToRunPathname = "";
var commandLineToRun = "";
// CustomActionData format: [INSTALLDIR]<?>
// If running in MSI, use arguments via standard CustomActionData interface, otherwise assume running outside MSI in debugger
if (DetectRunningInMSI())
argumentString = Session.Property("CustomActionData");
else
argumentString = "c:\\program files\\MyProgramDir\\";
arguments = argumentString.split("<?>");
if (arguments.length == 1)
{
installDir = arguments[0];
}
else
{
LogMessage("Argument string invalid (" +arguments.length+ "): " +argumentString);
throw 3;
}
installDir = EnsureEndsInBackslash(installDir);
programToRunPathname= installDir +"ProgramToRun.exe";
commandLineToRun = "\""+ programToRunPathname+"\" somecommand";
if (RunCommand(commandLineToRun) != 0)
{
// Critical error, fail install
throw 3;
}
function RunCommand( commandLine )
// Runs the specified command line and returns the process exit code or failure code
{
var returnVal = -1;
var shellUtil = null;
// Validate parameters
if (commandLine == "")
return -1;
shellUtil = SafeGetActiveXObject(ClassName_ScriptingRuntimeShell);
if (shellUtil != null)
{
try
{
LogMessage("RunCommand: Running "+commandLine);
returnVal = shellUtil.Run(commandLine, 0, true);
if (returnVal != 0)
LogMessage("RunCommand: Error " +returnVal+ " returned by command line "+commandLine);
}
catch (runException)
{
// 0x80070002
if (runException.number == -2147024894)
LogMessage("RunCommand: File not found error running command " +commandLine+ ": " +runException.message);
else
LogMessage("RunCommand: Error " +runException.number+ " running command " +commandLine+ ": " +runException.message);
returnVal = runException.number;
}
shellUtil = null;
}
return returnVal;
}
function LogMessage( messageString )
// Writes a line to the MSI log, or the console if running outside MSI.
{
var customActionName = "RunProgram";
if (DetectRunningInMSI())
{
var msiMessageTypeInfo = 0x04000000
var logRecord = null;
var currTime = new Date();
logRecord = Installer.CreateRecord(1);
logRecord.StringData(0) = currTime.toTimeString() +" "+ customActionName +": [1]";
logRecord.StringData(1) = messageString;
Session.Message(msiMessageTypeInfo, logRecord);
logRecord = null;
}
else
{
var currTime = new Date();
messageString = currTime.toTimeString() +" "+ customActionName +": "+ messageString;
WScript.Echo(messageString);
}
}
function DetectRunningInMSI()
// Returns TRUE if running in MSI, else FALSE
{
var returnVal = true;
var stringVal = "";
try
{
// Try to reference the Session object, which is only provided by the MSI runtime engine
stringVal = Session.Property("ProductCode");
}
catch (thisException)
{
// An exception is only thrown if the runtime couldn't resolve Session, which means
// this script is not running under MSI
returnVal = false;
}
return returnVal;
}
function SafeGetActiveXObject( className )
// Creates an instance of className and returns it, or null if an error occurs, and logs the error
{
var returnVal = null;
try
{
returnVal = new ActiveXObject(className);
}
catch (createException)
{
LogMessage("SafeGetActiveXObject: Error " +createException.number+ " creating object of class " +className+ ": " +createException.message);
}
return returnVal;
}
function EnsureEndsInBackslash( directoryPath )
// Returns directoryPath ending in a backslash if it does not already end in one.
{
var returnVal = directoryPath;
if (returnVal.substring(returnVal.length, returnVal.length-1) != "\\")
returnVal = returnVal + "\\";
return returnVal;
}