From c199fb594a62ddea9cb84806f8f7f11a76e809ec Mon Sep 17 00:00:00 2001
From: Lord Hepipud <contact@lordhepipud.de>
Date: Mon, 19 Dec 2022 13:17:36 +0100
Subject: [PATCH] Fixes cmd aliases not evaluated on plugin run

---
 doc/100-General/10-Changelog.md               |  3 ++-
 .../ConvertTo-IcingaPowerShellArguments.psm1  | 24 +++++++++++++++----
 2 files changed, 21 insertions(+), 6 deletions(-)

diff --git a/doc/100-General/10-Changelog.md b/doc/100-General/10-Changelog.md
index 9ae976c..b6cbe66 100644
--- a/doc/100-General/10-Changelog.md
+++ b/doc/100-General/10-Changelog.md
@@ -7,7 +7,7 @@ documentation before upgrading to a new release.
 
 Released closed milestones can be found on [GitHub](https://github.com/Icinga/icinga-powershell-framework/milestones?state=closed).
 
-## 1.10.1 (2022-27-10)
+## 1.10.1 (2022-12-20)
 
 [Issue and PRs](https://github.com/Icinga/icinga-powershell-framework/milestone/27?closed=1)
 
@@ -15,6 +15,7 @@ Released closed milestones can be found on [GitHub](https://github.com/Icinga/ic
 
 * [#582](https://github.com/Icinga/icinga-powershell-framework/issues/582) Fixes background service registration caused by migration task for v1.10.0 being executed even when no services were defined before
 * [#588](https://github.com/Icinga/icinga-powershell-framework/issues/588) Fixes threshold values causing an error because of too aggressive regex expression
+* [#599](https://github.com/Icinga/icinga-powershell-plugins/issues/599) Fixes plugin argument parser to proceed with real argument names and possible provided aliases
 
 ## 1.10.0 (2022-08-30)
 
diff --git a/lib/core/tools/ConvertTo-IcingaPowerShellArguments.psm1 b/lib/core/tools/ConvertTo-IcingaPowerShellArguments.psm1
index 44d983a..2ccc067 100644
--- a/lib/core/tools/ConvertTo-IcingaPowerShellArguments.psm1
+++ b/lib/core/tools/ConvertTo-IcingaPowerShellArguments.psm1
@@ -25,13 +25,27 @@ function ConvertTo-IcingaPowerShellArguments()
         return @{ };
     }
 
-    $CommandHelp = Get-Help -Name $Command -Full -ErrorAction SilentlyContinue;
+    $CmdData               = Get-Command $Command -ErrorAction SilentlyContinue;
+    [array]$CmdAllowedArgs = $CmdData.Parameters.Keys;
 
     # Ensure we do not cause exceptions along the border in case the plugin is not installed
-    if ($null -eq $CommandHelp) {
+    if ($null -eq $CmdAllowedArgs) {
         return @{ };
     }
 
+    # Ensure we not only add the parameter name to our allow list but also possible aliases
+    foreach ($entry in $CmdData.Parameters.Keys) {
+        if ($CmdData.Parameters[$entry].Aliases.Count -eq 0) {
+            continue;
+        }
+
+        foreach ($cmdAlias in $CmdData.Parameters[$entry].Aliases) {
+            if ($CmdAllowedArgs -NotContains $cmdAlias) {
+                $CmdAllowedArgs += $cmdAlias;
+            }
+        }
+    }
+
     [hashtable]$IcingaArguments = @{ };
     [int]$ArgumentIndex         = 0;
 
@@ -50,7 +64,7 @@ function ConvertTo-IcingaPowerShellArguments()
         }
 
         # Check if our string value is a argument contained inside the command being executed
-        if ($CommandHelp.parameters.parameter.name -Contains ($Arguments[$ArgumentIndex].SubString(1, $Arguments[$ArgumentIndex].Length - 1)) -eq $FALSE) {
+        if ($CmdAllowedArgs -Contains ($Arguments[$ArgumentIndex].SubString(1, $Arguments[$ArgumentIndex].Length - 1)) -eq $FALSE) {
              # Continue if we are not an argument
              $ArgumentIndex += 1;
              continue;
@@ -77,7 +91,7 @@ function ConvertTo-IcingaPowerShellArguments()
 
             # If our next value on the index is an argument in our command
             # -> The current argument seems to be a switch argument
-            if ($CommandHelp.parameters.parameter.name -Contains ($NextValue.SubString(1, $NextValue.Length - 1))) {
+            if ($CmdAllowedArgs -Contains ($NextValue.SubString(1, $NextValue.Length - 1))) {
                 if ($IcingaArguments.ContainsKey($Argument) -eq $FALSE) {
                     $IcingaArguments.Add($Argument, $TRUE);
                 }
@@ -103,7 +117,7 @@ function ConvertTo-IcingaPowerShellArguments()
                 [string]$NextValue = $Arguments[$ReadStringIndex + 1];
 
                 # Check the next string element and evaluate if it is an argument for our command
-                if ($CommandHelp.parameters.parameter.name -Contains ($NextValue.SubString(1, $NextValue.Length - 1))) {
+                if ($CmdAllowedArgs -Contains ($NextValue.SubString(1, $NextValue.Length - 1))) {
                     break;
                 }