Opened 9 years ago

Closed 4 years ago

#153 closed Bug / Defect (fixed)

Add "RequestExecutionLevel admin" to tapinstall.exe manifest file

Reported by: Samuli Seppänen Owned by: Samuli Seppänen
Priority: major Milestone: RC 2.4
Component: Installation Version: OpenVPN git master branch (Community Ed)
Severity: Not set (select this one, unless your'e a OpenVPN developer) Keywords: windows nsis tap


Currently standalone tapinstall.exe does not automatically raise privileges on Windows Vista/7 as it should. This should be trivial to fix by modifying it's manifest file.

Change History (16)

comment:1 Changed 9 years ago by David Sommerseth

Component: Generic / unclassifiedInstallation

comment:2 Changed 8 years ago by David Sommerseth

Owner: changed from Samuli Seppänen to Samuli Seppänen
Status: newassigned

comment:3 Changed 7 years ago by Samuli Seppänen

Keywords: windows nsis tap added
Milestone: beta 2.3release 2.4

comment:4 Changed 5 years ago by Samuli Seppänen

Status: assignedaccepted

comment:5 Changed 5 years ago by Samuli Seppänen

Milestone: release 2.4alpha 2.4

comment:6 Changed 4 years ago by Samuli Seppänen

This can probably done post-build with mt.exe:

comment:7 Changed 4 years ago by Samuli Seppänen

A simple manifest along the lines of should do the trick.

comment:8 Changed 4 years ago by Samuli Seppänen

This is a bit more tricky than I imagined. Building devcon.exe (tapinstall.exe) using the tap-windows6 buildsystem does not work properly, so I am using a special tapinstall.exe executables from jamesyonan, and adding the resources during devcon/tapinstall build is not an option. On top of that mt.exe seems to be missing from Visual Studio 2012 and 2014.

D12fk suggested using a generic Windows resource editor, which probably is the sanest strategy here. The only trick is to find a trustworthy one.

comment:9 Changed 4 years ago by Samuli Seppänen

Milestone: alpha 2.4release 2.4.1

Discussed this in today's community meeting, and agreed that this is not a blocker for 2.4.0. We decided to try an external manifest file first, and if that fails, try embedding the manifest into the executable itself.

comment:10 Changed 4 years ago by selvanair

Try the following as an external manifest file: name it as tapinstall.exe.manifest
and copy to same folder as tapinstall.exe

EDIT: Tested on Server 2008 and Win7 (an irrelevant section removed from the manifest)

<?xml version="1.0" encoding="UTF-8" standalone="yes"?>
<assembly xmlns="urn:schemas-microsoft-com:asm.v1"
<description>Tap driver install</description>
<trustInfo xmlns="urn:schemas-microsoft-com:asm.v2">

Last edited 4 years ago by selvanair (previous) (diff)

comment:11 Changed 4 years ago by selvanair

@samuli: I tested the external manifest approach and it works fine. I've seen reports that adding an external manifest to an already installed executable sometimes fails to work unless the time stamp of the executable not updated --- something equivalent to touch file like

Set-ItemProperty tapinstall.exe LastWriteTime (Get-Date)

should do it. But it worked for me without any such hacks.

With this manifest in place, both addtap.bat and tapinstall.exe raised UAC prompts. tapinstalll was reported as "Windows Setup API published by OpenVPN ..."

If possible let's distribute the manifest with the Tap Windows installer and have it copied to the same location as tapinstall.exe. Else we can include in openvpn installer and have it copied to the right place..

comment:12 Changed 4 years ago by Samuli Seppänen

Milestone: release 2.4.1RC 2.4

I can put the manifest file into the tap-windows6 installer. OpenVPN 2.4_rc1 is too close (today/early tomorrow) so this will have to wait until rc2.

comment:13 Changed 4 years ago by Samuli Seppänen

@selvanair: I tested the manifest file on Windows 7 and Windows 2012r2. In both cases it was necessary to do

Set-ItemProperty tapinstall.exe LastWriteTime (Get-Date)

Without that fix tapinstall.exe would ignore the manifest file completely.

There were some inconsistencies in how Windows was able to use the manifest, though. Take this command sequence for example:

cd 'c:\Program Files\Tap-Windows\bin'
.\tapinstall.exe install .\driver\OemVista.inf tap0901

The results were mixed:

ApplicationLaunched as admin?Shows UAC?Result
cmd.exeNoYesCommand completes successfully
cmd.exeYesNoCommand completes successfully
powershellNoNotapinstall.exe shows its internal help and quits
powershellYesNoCommand completes successfully

I don't think the non-admin Powershell issue is related to the manifest file itself.

I will issue a PR that will include the manifest file. In that PR I will look into how to fix the tapinstall.exe write timestamp on the fly.

comment:14 Changed 4 years ago by Samuli Seppänen

Pull request here.

comment:15 Changed 4 years ago by Samuli Seppänen

Fixed in slightly different fashion by tap-windows6 PR#23, which just got merged. Once an updated installer is available this ticket can be closed.

comment:16 Changed 4 years ago by Samuli Seppänen

Resolution: fixed
Status: acceptedclosed

The new snapshot installers should contain PR#23, so this can now be closed. The 2.4.1 installers will also have the fix.

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