Kaju self-updater talk (v.2.x)

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  2. 2 months ago

    Douglas H

    Nov 7 Pre-Release Testers, Xojo Pro

    So far I've done a few apps without issue. Code signed and notarized (via App Wrapper), and still the Kaju updates worked great. In my tests so far, the apps were not being app translocated. Perhaps that is the key here and the issue would be if the app had been translocated.

    I do have one app with bundled helper apps, and as soon as I sign and notarize the helper apps don't work. But the update still does. So I'm doing something wrong in my wrapping. But that is for another thread. So far it looks like Kaju is working as designed.

    (And off-topic, I tried putting the helper apps in Helpers or in MacOS but I'm still doing something wrong -- unrelated to Kaju.)

  3. Richard G

    Nov 9 Pre-Release Testers Atlanta, GA

    Regarding the notarization of Zip files for Kaju, I'm just about to release an upgrade to my app that will include Kaju for the first time. so when I do my next app update, what would the projected workflow be for the update zip file?

    Codesign app.
    Notarize the app?
    Notarize the zip file but attach previous receipt?

    I do have Sam's App Wrapper.


  4. 8 weeks ago

    Thomas R

    Nov 19 Pre-Release Testers, Xojo Pro Berlin, Germany


    are there any known problems with Xojo 2019 R1.1 on Windows 10? Update process runs fine (Zip file is downloaded and decompressed, files moved to "<foldername> - decompressed") until user clicks on "Quit & Install", then nothing happens.

    Method "StartUpdate" is the last thing executed - UpdateInitiater/Deconstructor is not executed and so the UpdateInitiater/RunScript is never called...

    Any ideas?

  5. Tim P

    Nov 19 Pre-Release Testers Rochester, NY

    From the Readme:

    Important: Kaju does its magic by launching a command-line script when the UpdateInitiater gets set to Nil, which should happen when the app quits. Unfortunately, that's not always true so you should force the issue by inserting App.UpdateInitiater = Nil into your App.Close event.

  6. Thomas R

    Nov 19 Pre-Release Testers, Xojo Pro Berlin, Germany

    Hi Tim,

    thanks for the reply, but thats not the point - as I wrote the update process is running fine (UpdatewIndow is shown, zip file is downloaded and decompressed and files moved) until the last steps (RunScript in Class UpdateIntiater), which is not executed on Windows 10...

  7. Kem T

    Nov 19 Pre-Release Testers, Xojo Pro, XDC Speakers, MVP Connecticut

    Are you saying that you added that code to the Close event as specified in the Read Me that Tim highlighted, and it still isn't working?

  8. Thomas R

    Nov 19 Pre-Release Testers, Xojo Pro Berlin, Germany

    Sorry, Tim and Kem - its my fault. The line was commented out - must have happend while testing. Since updates worked fine on Mac I was searching for reasons why the won't work on Windows (except writeprotection in "program files" folder).
    After uncommenting the RunScript is executed, as expected...

  9. Aurelian N

    Nov 19 Pre-Release Testers, Xojo Pro
    Edited 8 weeks ago

    Hello Kem,

    I did send a message via XOJO forum but I guess that did not get trough.

    While seeing the limitations on windows and searching little bit about elevated privileges I found those Link here

    In case the page does not work anymore the code was here :

    :: Elevate.cmd - Version 4
    :: Automatically check & get admin rights
    :: see "https://stackoverflow.com/a/12264592/1016343" for description
     @echo off
     ECHO =============================
     ECHO Running Admin shell
     ECHO =============================
     setlocal DisableDelayedExpansion
     set cmdInvoke=1
     set winSysFolder=System32
     set "batchPath=%~0"
     for %%k in (%0) do set batchName=%%~nk
     set "vbsGetPrivileges=%temp%\OEgetPriv_%batchName%.vbs"
     setlocal EnableDelayedExpansion
      NET FILE 1>NUL 2>NUL
      if '%errorlevel%' == '0' ( goto gotPrivileges ) else ( goto getPrivileges )
      if '%1'=='ELEV' (echo ELEV & shift /1 & goto gotPrivileges)
      ECHO **************************************
      ECHO Invoking UAC for Privilege Escalation
      ECHO **************************************
      ECHO Set UAC = CreateObject^("Shell.Application"^) > "%vbsGetPrivileges%"
      ECHO args = "ELEV " >> "%vbsGetPrivileges%"
      ECHO For Each strArg in WScript.Arguments >> "%vbsGetPrivileges%"
      ECHO args = args ^& strArg ^& " "  >> "%vbsGetPrivileges%"
      ECHO Next >> "%vbsGetPrivileges%"
      if '%cmdInvoke%'=='1' goto InvokeCmd 
      ECHO UAC.ShellExecute "!batchPath!", args, "", "runas", 1 >> "%vbsGetPrivileges%"
      goto ExecElevation
      ECHO args = "/c """ + "!batchPath!" + """ " + args >> "%vbsGetPrivileges%"
      ECHO UAC.ShellExecute "%SystemRoot%\%winSysFolder%\cmd.exe", args, "", "runas", 1 >> "%vbsGetPrivileges%"
     "%SystemRoot%\%winSysFolder%\WScript.exe" "%vbsGetPrivileges%" %*
     exit /B
     setlocal & cd /d %~dp0
     if '%1'=='ELEV' (del "%vbsGetPrivileges%" 1>nul 2>nul  &  shift /1)
     REM Run shell as admin (example) - put here code as you like
     ECHO %batchName% Arguments: P1=%1 P2=%2 P3=%3 P4=%4 P5=%5 P6=%6 P7=%7 P8=%8 P9=%9
     cmd /k

    and in the description it was saying :

    The script takes advantage of the fact that NET FILE requires administrator privilege and returns errorlevel 1 if you don't have it. The elevation is achieved by creating a script which re-launches the batch file to obtain privileges. This causes Windows to present the UAC dialog and asks you for the administrator account and password.
    I have tested it with Windows 7, 8, 8.1, 10 and with Windows XP - it works fine for all. The advantage is, after the start point you can place anything that requires system administrator privileges, for example, if you intend to re-install and re-run a Windows service for debugging purposes (assumed that mypackage.msi is a service installer package):

    Do you think that could be added somehow in Kaju and have it work in Windows ?

    Thanks again.

  10. Kem T

    Nov 19 Pre-Release Testers, Xojo Pro, XDC Speakers, MVP Connecticut

    Possibly, but it's not a priority for me. Feel free to do a pull request off of the develop branch and I'll consider it.

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