My installation is installing a web application that is dependent on .NET
Framework v4 FULL. One of the actions I take during the installation is to
confirm that .NET Framework v4 is registered with IIS. I do this with the
"aspnet_regiis" utility. However this utility requires "run as administrator"
privilege escalation when UAC is turned on. Because I want to insure the .NET
Framework is properly registered with IIS prior to our application being
installed, I execute this custom action as an "immediate" action, After
CostFinalize.
Currently this all works but requires the installer to open a command window
with the "Run As Administrator" privilege and manually type in the "msiexec"
command. This is on a Windows 7 or later OS with UAC turned on of course. I
would like to avoid having the installer take these manual steps so I have
determined I can escalate the privilege by using the undocumented "runas"
option in the ShellExecute Method of the "Shell.Application" object. This
technique requires two VBscripts. One for the script to actually execute the
"aspnet_regiis" command (and associated setup, etc.) and one to launch that
script with the "runas" privilege escalation. I have confirmed this works
using a command window, meaning outside of Windows Installer. However when
employing this in my wxs, the "runas" script can't find the targeted script
with the real work to be accomplished. I assume this is because at the time my
"runas" script is executed the installation environment is not clearly defined.
Is the "targeted" script available at the time my "runas" customaction is
executed? Is there some property or variable I can append to the path of my
script so it can be found?
Here are some relevant snippets from my WXS and my VB scripts:
>From my WXS:
.
.
.
<Binary Id="CheckEnvironment" SourceFile="RunAsAdmin.vbs" />
<Binary Id="ConfirmEnvironment" SourceFile="ConfirmEnvironment.vbs" />
.
.
.
<CustomAction Id="CheckEnv" BinaryKey="CheckEnvironment"
VBScriptCall="Main" Execute="immediate" Return="check" />
.
.
.
<InstallExecuteSequence>
<Custom Action="CheckEnv" After="CostFinalize">Not
Installed</Custom>
<Custom Action="SetPoolIdentityCmdLine" After="InstallFinalize">Not
Installed</Custom>
<Custom Action="MakeApplicationPoolIdentity"
After="SetPoolIdentityCmdLine">Not Installed</Custom>
</InstallExecuteSequence>
Now from my RunAsAdmin.vbs script:
.
.
.
vbScriptCmd = "ConfirmEnvironment.vbs"
vbScriptCmd = vbScriptCmd & " " & QUOTE & progressFileGood & QUOTE & _
" " & QUOTE & progressFileFail & QUOTE
AppShell.ShellExecute "cscript", vbScriptCmd, "", "runas", 1
.
.
.
Where "progressFileGood" and "progressFileFail" are two temporary files through
which the "ConfirmEnvironment.vbs" script
reports its success or failure. Because the target of the ShellExecute is
asynchronous, I have to employ a check and sleep method on the
"progress" files to determine when the targeted script is finished.
And now from my "ConfirmEnvironment.vbs"
.
.
.
strExe = winFolder &
"\Microsoft.NET\Framework\v4.0.30319\aspnet_regiis.exe"
strCmd = "cmd /c " & strExe & " -iru 1>" & tempOutFilename & " 2>" &
tempErrFilename
runStatus = WshShell.Run(strCmd, 0, TRUE)
.
.
.
Thanks for any advice.
John Stifle | Software Engineer | TCIS, Engineering and Supply Chain
Unisys | 2470 Highcrest Rd., Roseville, MN, USA, 55113 | 651-635-7766 |
Net 524-7766
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