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(GH-188) Filter current environment variables #189

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Merged
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Jun 24, 2022
Merged

(GH-188) Filter current environment variables #189

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12 changes: 11 additions & 1 deletion lib/templates/init.ps1
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Original file line number Diff line number Diff line change
Expand Up @@ -35,8 +35,18 @@ $global:ourFunctions = @'
function Reset-ProcessEnvironmentVariables {
param($CachedEnvironmentVariables)

# When Protected Event Logging and PowerShell Script Block logging are enabled together
# the SystemRoot environment variable is a requirement. If it is removed as part of this purge
# it causes the PowerShell process to crash, therefore breaking the pipe between Ruby and the
# remote PowerShell session.
# The least descructive way to avoid this is to filter out SystemRoot when pulling our current list
# of environment variables. Then we can continue safely with the removal.
$CurrentEnvironmentVariables = Get-ChildItem -Path Env:\* |
Where-Object {$_.Name -ne "SystemRoot"}

# Delete existing environment variables
Remove-Item -Path Env:\* -ErrorAction SilentlyContinue -WarningAction SilentlyContinue -Recurse
$CurrentEnvironmentVariables |
ForEach-Object -Process { Remove-Item -Path "ENV:\$($_.Name)" -ErrorAction SilentlyContinue -WarningAction SilentlyContinue -Recurse }

# Re-add the cached environment variables
$CachedEnvironmentVariables |
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