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chocolatey-preinstaller-checks.extension/chocolatey-preinstaller-checks.extension.nuspec

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+<?xml version="1.0" encoding="utf-8"?>
+<!-- Do not remove this test for UTF-8: if “Ω” doesn’t appear as greek uppercase omega letter enclosed in quotation marks, you should use an editor that supports UTF-8, not this one. -->
+<package xmlns="http://schemas.microsoft.com/packaging/2015/06/nuspec.xsd">
+  <metadata>
+    <id>chocolatey-preinstaller-checks.extension</id>
+    <version>0.0.1-pre</version>	
+    <owners>bcurran3</owners>	
+    <packageSourceUrl>https://github.com/bcurran3/ChocolateyPackages/tree/master/chocolatey-preinstaller-checks.extension</packageSourceUrl>
+    <title>Chocolatey Preinstaller Checks Extension</title>
+    <authors>Bill Curran</authors>
+    <projectUrl>https://github.com/bcurran3/ChocolateyPackages/tree/master/chocolatey-preinstaller-checks.extension</projectUrl>
+    <iconUrl>https://raw.githubusercontent.com/bcurran3/ChocolateyPackages/master/chocolatey-preinstaller-checks.extension_icon.png</iconUrl>	
+    <copyright>public domain</copyright>
+    <licenseUrl>https://wiki.creativecommons.org/wiki/Public_domain</licenseUrl>
+    <requireLicenseAcceptance>false</requireLicenseAcceptance>	
+    <projectSourceUrl>https://github.com/bcurran3/ChocolateyPackages/tree/master/chocolatey-preinstaller-checks.extension</projectSourceUrl>
+	<bugTrackerUrl>https://github.com/bcurran3/ChocolateyPackages/issues</bugTrackerUrl>
+    <tags>bcurran3 unofficial choco preinstaller checks extension</tags>
+    <summary>Chocolatey Preinstaller Checks Extension is a collection of installer add-ons.</summary>
+    <description>
+
+#PRERELEASE - TESTING AND FEEDBACK IS HIGHLY ENCOURAGED!
+#KNOWN BUG - DOESN'T WORK WITH AUTO UNINSTALLER (YET!)
+
+##**Chocolatey Preinstaller Checks Extension** is a Chocolatey extension that intercepts and runs checks before installing or uninstalling a program. This extension will start working automatically once installed and does NOT need to be implemented by package creators/maintainers. #**Chocolatey Preinstaller Checks Extension** is meant to be installed and thus used directly by Chocolatey end users.
+
+###PURPOSE:
+**Chocolatey Preinstaller Checks Extension**'s main purpose to fend off specific types of problems before they occur. Currently Chocolatey (choco.exe) is not multi-instance friendly. If you try to install packages using choco install or cinst in two Command Prompts at the same time, strange things may occur. **Chocolatey Preinstaller Checks Extension** avoids these strange things by intercepting calls to install programs and making choco.exe wait for previous instances to finish. **Chocolatey Preinstaller Checks Extension** also checks Windows Installer to see if it's busy and will make MSI installer programs wait until Windows Installer has finished processing the other program. **Chocolatey Preinstaller Checks Extension** will pause and retry until [commandExecutionTimeoutSeconds](https://chocolatey.org/docs/chocolatey-configuration) hits it's threshold of 2700 seconds/45 minutes (default) and then choco will abort. **Chocolatey Preinstaller Checks Extension** only runs before program installations. It does not perform any functions related to portable packages or other choco commands.
+
+###FEATURES: 
+* **Chocolatey Preinstaller Checks Extension** will check if there is a pending reboot and warn you about it if so.
+* **Chocolatey Preinstaller Checks Extension** will check if there are instances of choco.exe already running and wait for them to finish.
+* **Chocolatey Preinstaller Checks Extension** will check if Windows Installer is already running and wait for it to finish.
+
+**[PACKAGE NOTES](https://github.com/bcurran3/ChocolateyPackages/blob/master/chocolatey-preinstaller-checks.extension/readme.md)**
+    </description>
+  </metadata>
+</package>

chocolatey-preinstaller-checks.extension/extensions/Chocolatey-Preinstaller-Checks.extension.psm1

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+$scriptRoot = Split-Path -Path $MyInvocation.MyCommand.Definition
+
+$publicFunctions = @(
+	'Get-chocoStatus',
+	'Get-PendingRebootStatus',
+    'Get-WindowsInstallerStatus',
+	'Start-PreinstallChecks',
+	'Start-PreuninstallChecks'
+)
+
+Get-ChildItem -Path "$scriptRoot\*.ps1" | ForEach-Object { . $_ }
+Export-ModuleMember -Function $publicFunctions
+
+Set-Alias Install-ChocolateyInstallPackage Start-PreinstallChecks -Force -Scope Global
+Set-Alias Uninstall-ChocolateyPackage Start-PreuninstallChecks -Force -Scope Global

chocolatey-preinstaller-checks.extension/extensions/Get-PendingRebootStatus.ps1

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+function Get-PendingRebootStatus{
+# thanks http://ilovepowershell.com/2015/09/10/how-to-check-if-a-server-needs-a-reboot/
+if (Get-ItemProperty -Path "HKLM:\Software\Microsoft\Windows\CurrentVersion\Component Based Servicing\RebootPending" -ErrorAction SilentlyContinue) { return $true }
+if (Get-ItemProperty -Path "HKLM:\SOFTWARE\Microsoft\Windows\CurrentVersion\WindowsUpdate\Auto Update\RebootRequired" -ErrorAction SilentlyContinue) { return $true }
+if (Get-ItemProperty -Path "HKLM:\SYSTEM\CurrentControlSet\Control\Session Manager" -Name PendingFileRenameOperations -ErrorAction SilentlyContinue) { return $true }
+ try { 
+   $util = [wmiclass]"\\.\root\ccm\clientsdk:CCM_ClientUtilities"
+   $status = $util.DetermineIfRebootPending()
+   if(($status -ne $null) -and $status.RebootPending){
+     return $true
+   }
+ }catch{}
+
+ return $false
+}

chocolatey-preinstaller-checks.extension/extensions/Get-WindowsInstallerStatus.ps1

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+function Get-WindowsInstallerStatus{
+$msiexecInstances = @(Get-Process -ea silentlycontinue msiexec).count
+# From my observations, msiexec sticks around after a .msi is run. Running a .msi causes 2-3 occurrences of msiexec.
+
+if ($msiexecInstances -gt 1)
+   {
+    while ($msiexecInstances -gt 1)
+	{
+     Write-Host "  ** WARNING: Windows Installer IS currently running. Pausing 30 seconds..." -foreground red
+	 Start-Sleep -seconds 30
+     $msiexecInstances = @(Get-Process -ea silentlycontinue msiexec).count
+	}
+   }
+Write-Host "  ** Windows Installer IS NOT currently running" -foreground green
+}
+

chocolatey-preinstaller-checks.extension/extensions/Get-chocoStatus.ps1

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+function Get-chocoStatus($AllowedChocos){
+$chocoInstances = @(Get-Process -ea silentlycontinue choco).count
+# running choco got you here and is one instance!
+# install causes one instance
+# uninstall seems to always cause two instances
+
+if ($chocoInstances -gt $AllowedChocos)
+    {
+     while ($chocoInstances -gt $AllowedChocos)
+     {
+      Write-Host "  ** WARNING: Found multiple instances of choco.exe running. Pausing 30 seconds..." -foreground red
+	  Start-Sleep -seconds 30
+      $chocoInstances = @(Get-Process -ea silentlycontinue choco).count
+     }
+	} 
+Write-Host "  ** choco.exe IS NOT running multiple instances." -foreground green
+}
+
+

chocolatey-preinstaller-checks.extension/extensions/Start-PreinstallChecks.ps1

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+function Start-PreInstallChecks{
+
+Write-Host "PRE-INSTALLATION CHECKS:" -foreground magenta
+if (Get-PendingRebootStatus) 
+   {
+     Write-Host "  ** WARNING: Pending reboot found." -foreground red 
+   } else {
+     Write-Host "  ** Pending reboot NOT found." -foreground green
+	}
+Get-WindowsInstallerStatus
+Get-chocoStatus 1
+Remove-Item alias:\Install-ChocolateyInstallPackage
+Install-ChocolateyInstallPackage @args
+}

chocolatey-preinstaller-checks.extension/extensions/Start-PreuninstallChecks.ps1

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+function Start-PreuninstallChecks{
+
+Write-Host "PRE-UNINSTALLATION CHECKS:" -foreground magenta
+if (Get-PendingRebootStatus) 
+   {
+     Write-Host "  ** WARNING: Pending reboot found." -foreground red 
+   } else {
+     Write-Host "  ** Pending reboot NOT found." -foreground green
+	}
+Get-WindowsInstallerStatus
+Get-chocoStatus 2
+Remove-Item alias:\Uninstall-ChocolateyPackage
+Uninstall-ChocolateyPackage @args
+}

chocolatey-preinstaller-checks.extension/localtest.bat

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+@echo off
+choco uninstall chocolatey-preinstaller-checks.extension
+cpack
+cinst chocolatey-preinstaller-checks.extension.0.0.1-pre.nupkg

chocolatey-preinstaller-checks.extension/readme.md

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+**BCURRAN3'S PACKAGE NOTES:**
+
+* A BCURRAN3 original!
+* I personally use and endorse this extension.
+
+CHANGE LOG:
+0.0.1   - initial release
+
+ROADMAP:
+
+
+Like my [packages](https://chocolatey.org/profiles/bcurran3)? 
+
+Find them useful?
+
+**Want to buy me a beer?**
+
+https://www.paypal.me/bcurran3donations
+
+If applicable, please always consider donating to the developer or purchasing the software first - this includes Chocolatey licensed editions. 
+
+
+