EXOTransportRule - Fixed Creation and Update Logic

CHANGELOG.md

@@ -5,6 +5,8 @@
 * All resources
   * Applying project default formatting on all files, to improve
     reading and troubleshooting
+* EXOTransportRule
+  * Fixed conditional logic for creation and update.
 * IntuneTrustedRootCertificateIOS
   * Initial release
 * M365DSCDRGUtil

Modules/Microsoft365DSC/DSCResources/MSFT_EXOTransportRule/MSFT_EXOTransportRule.psm1

@@ -1797,6 +1797,20 @@ function Set-TargetResource
     if ($Ensure -eq 'Present' -and $currentTransportRuleConfig.Ensure -eq 'Absent')
     {
         Write-Verbose -Message "Transport Rule '$($Name)' does not exist but it should. Create and configure it."
+
+        $nullKeysToRemove = @()
+        foreach ($key in $NewTransportRuleParams.Keys)
+        {
+            if ($NewTransportRuleParams.$key.GetType().Name -eq 'String[]' -and $NewTransportRuleParams.$key.Length -eq 0)
+            {
+                $nullKeysToRemove += $key
+            }
+        }
+        foreach ($paramToRemove in $nullKeysToRemove)
+        {
+            $NewTransportRuleParams.Remove($paramToRemove) | Out-Null
+        }
+
         # Create Transport Rule
         New-TransportRule @NewTransportRuleParams
 
@@ -1809,7 +1823,34 @@ function Set-TargetResource
     }
     # CASE: Transport Rule exists and it should, but has different values than the desired ones
     elseif ($Ensure -eq 'Present' -and $currentTransportRuleConfig.Ensure -eq 'Present')
-    {
+    {        
+        if ($null -ne $HeaderContainsMessageHeader -and $null -eq $currentTransportRuleConfig.HeaderContainsMessageHeader)
+        {
+            $SetTransportRuleParams.Add("HeaderContainsMessageHeader",$null)
+        }
+        if ($null -ne $HeaderMatchesPatterns -and $null -eq $currentTransportRuleConfig.HeaderMatchesMessageHeader)
+        {
+            $SetTransportRuleParams.Add("HeaderMatchesMessageHeader",$null)
+        }
+        if ($null -ne $ExceptIfHeaderContainsWords -and $null -eq $currentTransportRuleConfig.ExceptIfHeaderContainsMessageHeader)
+        {
+            $SetTransportRuleParams.Add("ExceptIfHeaderContainsMessageHeader",$null)
+        }        
+        if ($null -ne $ExceptIfHeaderMatchesPatterns -and $null -eq $currentTransportRuleConfig.ExceptIfHeaderMatchesMessageHeader)
+        {
+            $SetTransportRuleParams.Add("ExceptIfHeaderMatchesMessageHeader",$null)
+        }
+        if ($null -ne $ApplyOME)
+        {
+            Write-Warning -Message "ApplyOME is deprecated. Use ApplyRightsProtectionTemplate instead."
+            $SetTransportRuleParams.Remove("ApplyOME") | Out-Null
+        }
+        if ($null -ne $RemoveOME)
+        {
+            Write-Warning -Message "RemoveOME is deprecated. Use RemoveOMEv2 instead."
+            $SetTransportRuleParams.Remove("RemoveOME") | Out-Null
+        }
+
         Write-Verbose -Message "Transport Rule '$($Name)' already exists, but needs updating."
         Write-Verbose -Message "Setting Transport Rule $($Name) with values: $(Convert-M365DscHashtableToString -Hashtable $SetTransportRuleParams)"
         Set-TransportRule @SetTransportRuleParams

Modules/Microsoft365DSC/DSCResources/MSFT_IntuneAppProtectionPolicyAndroid/MSFT_IntuneAppProtectionPolicyAndroid.psm1

@@ -350,14 +350,21 @@ function Get-TargetResource
     }
     catch
     {
-        New-M365DSCLogEntry -Message 'Error retrieving data:' `
-            -Exception $_ `
-            -Source $($MyInvocation.MyCommand.Source) `
-            -TenantId $TenantId `
-            -Credential $Credential
-
-        $nullResult = Clear-M365DSCAuthenticationParameter -BoundParameters $nullResult
-        return $nullResult
+        if ($_.Exception.Message -eq 'Multiple Policies with same displayname identified - Module currently only functions with unique names')
+        {
+            throw $_
+        }
+        else
+        {
+            New-M365DSCLogEntry -Message 'Error retrieving data:' `
+                -Exception $_ `
+                -Source $($MyInvocation.MyCommand.Source) `
+                -TenantId $TenantId `
+                -Credential $Credential
+
+            $nullResult = Clear-M365DSCAuthenticationParameter -BoundParameters $nullResult
+            return $nullResult
+        }
     }
 }