Add policy Enforce tag Name and Value casing on resource groups and subscriptions

policyDefinitions/Tags/enforce-tag-name-and-value-casing-on-rg-and-sub/azurepolicy.json

@@ -0,0 +1,100 @@
+{
+  "name": "4c79587a-c4a1-5c28-8806-d7d29d3c114c",
+  "type": "Microsoft.Authorization/policyDefinitions",
+  "properties": {
+    "displayName": "Enforce tag Name and Value casing on resource groups and subscriptions",
+    "description": "This policy can be used to convert a specific tag name and value on a resource to either being all lowercase or all uppercase. IMPORTANT: Tag Names are NOT case sensitive in azure therefore this is just a workaround that might stop working at any time.",
+    "mode": "All",
+    "metadata": {
+      "category": "Tags",
+      "version": "1.0.0"
+    },
+    "parameters": {
+      "toLowerOrToUpper": {
+        "type": "String",
+        "metadata": {
+          "displayName": "Enforce lowercase or uppercase",
+          "description": "If set to lowercase/uppercase then the Policy will convert the tag name and value on existing and new resources groups to lowercase/Uppercase "
+        },
+        "allowedValues": [
+          "Lowercase",
+          "Uppercase"
+        ]
+      },
+      "tagName": {
+        "type": "String",
+        "metadata": {
+          "displayName": "TagName",
+          "description": "Tag name that will be used for enforcement of lowercase/uppercase case."
+        }
+      },
+      "applyCaseToValue": {
+        "type": "Boolean",
+        "metadata": {
+          "displayName": "Apply Case to Value",
+          "description": "Control if the same case applied to the tag name should be applied to the value."
+        },
+        "defaultValue": true
+      },
+      "effect": {
+        "type": "String",
+        "metadata": {
+          "displayName": "Effect",
+          "description": "Modify, Deny, Audit or Disabled the execution of the Policy"
+        },
+        "allowedValues": [
+          "Modify",
+          "Deny",
+          "Audit",
+          "Disabled"
+        ],
+        "defaultValue": "Modify"
+      }
+    },
+    "policyRule": {
+      "if": {
+        "allOf": [
+          {
+            "anyOf": [
+              {
+                "field": "type",
+                "equals": "Microsoft.Resources/subscriptions"
+              },
+              {
+                "field": "type",
+                "equals": "Microsoft.Resources/subscriptions/resourceGroups"
+              }
+            ]
+          },
+          {
+            "field": "[concat('tags[', parameters('tagName'), ']')]",
+            "exists": true
+          },
+          {
+            "value": "[if(empty(field('tags')), bool('false'), if(contains(field('tags'), parameters('tagName')), bool('true'), bool('false')))]",
+            "equals": true
+          },
+          {
+            "value": "[if(empty(field('tags')), bool('false'), if(contains(field('tags'), parameters('tagName')), if(equals(parameters('applyCaseToValue'), bool('true')),if(equals(parameters('toLowerOrToUpper'), 'Lowercase'), not(equals(base64(toLower(string(field(concat('tags[', parameters('tagName'), ']'))))), base64(string(field(concat('tags[', parameters('tagName'), ']')))))), not(equals(base64(toUpper(string(field(concat('tags[', parameters('tagName'), ']'))))), base64(string(field(concat('tags[', parameters('tagName'), ']'))))))), bool('false')), bool('false')))]",
+            "equals": true
+          }
+        ]
+      },
+      "then": {
+        "effect": "[parameters('effect')]",
+        "details": {
+          "roleDefinitionIds": [
+            "/providers/microsoft.authorization/roleDefinitions/b24988ac-6180-42a0-ab88-20f7382dd24c"
+          ],
+          "operations": [
+            {
+              "operation": "addOrReplace",
+              "field": "tags",
+              "value": "[json(if(empty(field('tags')), '{}', if(equals(parameters('toLowerOrToUpper'), 'Lowercase'), string(union(field('tags'), createObject(tolower(parameters('tagName')), if(parameters('applyCaseToValue'),toLower(string(field(concat('tags[', parameters('tagName'), ']')))) , string(field(concat('tags[', parameters('tagName'), ']'))))))), string(union(field('tags'), createObject(toUpper(parameters('tagName')), if(parameters('applyCaseToValue'),toUpper(string(field(concat('tags[', parameters('tagName'), ']')))) , string(field(concat('tags[', parameters('tagName'), ']'))))))))))]"
+            }
+          ]
+        }
+      }
+    }
+  }
+}

policyDefinitions/Tags/enforce-tag-name-and-value-casing-on-rg-and-sub/azurepolicy.parameters.json

@@ -0,0 +1,42 @@
+{
+  "toLowerOrToUpper": {
+    "type": "String",
+    "metadata": {
+      "displayName": "Enforce lowercase or uppercase",
+      "description": "If set to lowercase/uppercase then the Policy will convert the tag name and value on existing and new resources groups to lowercase/Uppercase "
+    },
+    "allowedValues": [
+      "Lowercase",
+      "Uppercase"
+    ]
+  },
+  "tagName": {
+    "type": "String",
+    "metadata": {
+      "displayName": "TagName",
+      "description": "Tag name that will be used for enforcement of lowercase/uppercase case."
+    }
+  },
+  "applyCaseToValue": {
+    "type": "Boolean",
+    "metadata": {
+      "displayName": "Apply Case to Value",
+      "description": "Control if the same case applied to the tag name should be applied to the value."
+    },
+    "defaultValue": true
+  },
+  "effect": {
+    "type": "String",
+    "metadata": {
+      "displayName": "Effect",
+      "description": "Modify, Deny, Audit or Disabled the execution of the Policy"
+    },
+    "allowedValues": [
+      "Modify",
+      "Deny",
+      "Audit",
+      "Disabled"
+    ],
+    "defaultValue": "Modify"
+  }
+}

policyDefinitions/Tags/enforce-tag-name-and-value-casing-on-rg-and-sub/azurepolicy.rules.json

@@ -0,0 +1,45 @@
+{
+  "if": {
+    "allOf": [
+      {
+        "anyOf": [
+          {
+            "field": "type",
+            "equals": "Microsoft.Resources/subscriptions"
+          },
+          {
+            "field": "type",
+            "equals": "Microsoft.Resources/subscriptions/resourceGroups"
+          }
+        ]
+      },
+      {
+        "field": "[concat('tags[', parameters('tagName'), ']')]",
+        "exists": true
+      },
+      {
+        "value": "[if(empty(field('tags')), bool('false'), if(contains(field('tags'), parameters('tagName')), bool('true'), bool('false')))]",
+        "equals": true
+      },
+      {
+        "value": "[if(empty(field('tags')), bool('false'), if(contains(field('tags'), parameters('tagName')), if(equals(parameters('applyCaseToValue'), bool('true')),if(equals(parameters('toLowerOrToUpper'), 'Lowercase'), not(equals(base64(toLower(string(field(concat('tags[', parameters('tagName'), ']'))))), base64(string(field(concat('tags[', parameters('tagName'), ']')))))), not(equals(base64(toUpper(string(field(concat('tags[', parameters('tagName'), ']'))))), base64(string(field(concat('tags[', parameters('tagName'), ']'))))))), bool('false')), bool('false')))]",
+        "equals": true
+      }
+    ]
+  },
+  "then": {
+    "effect": "[parameters('effect')]",
+    "details": {
+      "roleDefinitionIds": [
+        "/providers/microsoft.authorization/roleDefinitions/b24988ac-6180-42a0-ab88-20f7382dd24c"
+      ],
+      "operations": [
+        {
+          "operation": "addOrReplace",
+          "field": "tags",
+          "value": "[json(if(empty(field('tags')), '{}', if(equals(parameters('toLowerOrToUpper'), 'Lowercase'), string(union(field('tags'), createObject(tolower(parameters('tagName')), if(parameters('applyCaseToValue'),toLower(string(field(concat('tags[', parameters('tagName'), ']')))) , string(field(concat('tags[', parameters('tagName'), ']'))))))), string(union(field('tags'), createObject(toUpper(parameters('tagName')), if(parameters('applyCaseToValue'),toUpper(string(field(concat('tags[', parameters('tagName'), ']')))) , string(field(concat('tags[', parameters('tagName'), ']'))))))))))]"
+        }
+      ]
+    }
+  }
+}