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Update logic to validate mg permissions when using managed identity #534

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Merged
daltondhcp merged 1 commit into from
Jan 14, 2022
Merged

Update logic to validate mg permissions when using managed identity #534

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20 changes: 14 additions & 6 deletions src/functions/Initialize-AzOpsEnvironment.ps1
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Original file line number Diff line number Diff line change
Expand Up @@ -95,13 +95,21 @@
return
}

#region Validate root '/' permissions
if ($currentAzContext.Account.Type -eq "User") {
$rootPermissions = Get-AzRoleAssignment -UserPrincipalName $currentAzContext.Account.Id -Scope "/" -ErrorAction SilentlyContinue -WarningAction SilentlyContinue
}
else {
$rootPermissions = Get-AzRoleAssignment -ObjectId (Get-AzADServicePrincipal -ApplicationId $currentAzContext.Account.Id).Id -Scope "/" -ErrorAction SilentlyContinue -WarningAction SilentlyContinue
#region Validate root '/' permissions - different methods of getting current context depending on principalType
switch ($currentAzContext.Account.Type) {
'User' {
$rootPermissions = Get-AzRoleAssignment -UserPrincipalName $currentAzContext.Account.Id -Scope "/" -ErrorAction SilentlyContinue -WarningAction SilentlyContinue
}
'ManagedService' {
# Get managed identity application id via IMDS (https://docs.microsoft.com/en-us/azure/active-directory/managed-identities-azure-resources/how-to-use-vm-token)
$applicationId = (Invoke-RestMethod -Uri "http://169.254.169.254/metadata/identity/oauth2/token?api-version=2021-02-01&resource=https%3A%2F%2Fmanagement.azure.com%2F" -Headers @{ Metadata = $true }).client_id
$rootPermissions = Get-AzRoleAssignment -ObjectId (Get-AzADServicePrincipal -ApplicationId $applicationId).Id -Scope "/" -ErrorAction SilentlyContinue -WarningAction SilentlyContinue
}
'ServicePrincipal' {
$rootPermissions = Get-AzRoleAssignment -ObjectId (Get-AzADServicePrincipal -ApplicationId $currentAzContext.Account.Id).Id -Scope "/" -ErrorAction SilentlyContinue -WarningAction SilentlyContinue
}
}

if (-not $rootPermissions) {
Write-PSFMessage -Level Important -String 'Initialize-AzOpsEnvironment.ManagementGroup.NoRootPermissions' -StringValues $currentAzContext.Account.Id
$PartialMgDiscovery = $true
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