feat(dotnet): masking (#1074)

| 🚥 Resolves [RM-8742](https://linear.app/readme-io/issue/RM-8742) |
| :------------------- |

## 🧰 Changes

Adds sensitive data masking to the Dotnet SDK
The logic is the same as we will have in Python SDK (PR #955)

Author: AndriiAndreiev

Makefile

@@ -16,12 +16,12 @@ cleanup-failure:
 test-metrics-dotnet: ## Run Metrics tests against the .NET SDK
 	docker compose up --build --detach integration_dotnet_metrics_v6.0
 	sleep 5
-	npm run test:integration-metrics || make cleanup-failure
+	SUPPORTS_HASHING=true npm run test:integration-metrics || make cleanup-failure
 	@make cleanup
 
 test-webhooks-dotnet: ## Run webhooks tests against the .NET SDK
 	docker compose up --build --detach integration_dotnet_webhooks_v6.0
-	npm run test:integration-webhooks || make cleanup-failure
+	SUPPORTS_HASHING=true npm run test:integration-webhooks || make cleanup-failure
 	@make cleanup
 
 ##

packages/dotnet/ReadMe/HarJsonTranslationLogics/HarJsonBuilder.cs

@@ -44,7 +44,7 @@ public async Task<string> BuildHar()
     private Group BuildGroup()
     {
       Group group = new Group();
-      group.id = this.configValues.group.id;
+      group.id = MaskHelper.Mask(this.configValues.group.id);
       group.label = this.configValues.group.label;
       group.email = this.configValues.group.email;
       return group;

packages/dotnet/ReadMe/HarJsonTranslationLogics/MaskHelper.cs

@@ -0,0 +1,17 @@
+using System;
+using System.Security.Cryptography;
+using System.Text;
+
+public static class MaskHelper
+{
+    public static string Mask(string data)
+    {
+        using (SHA512 sha512 = SHA512.Create())
+        {
+            byte[] hashBytes = sha512.ComputeHash(Encoding.UTF8.GetBytes(data));
+            string base64Hash = Convert.ToBase64String(hashBytes);
+            string opts = data.Length >= 4 ? data.Substring(data.Length - 4) : data;
+            return $"sha512-{base64Hash}?{opts}";
+        }
+    }
+}

packages/dotnet/ReadMe/HarJsonTranslationLogics/RequestProcessor.cs

@@ -145,31 +145,25 @@ private List<Headers> GetHeaders()
       {
         foreach (var reqHeader in this.request.Headers)
         {
+          Headers header = new Headers();
+          header.name = reqHeader.Key;
+          header.value = reqHeader.Key == "Authorization" ? MaskHelper.Mask(reqHeader.Value) : reqHeader.Value.ToString();
           if (!this.configValues.options.isAllowListEmpty)
           {
             if (this.CheckAllowList(reqHeader.Key))
             {
-              Headers header = new Headers();
-              header.name = reqHeader.Key;
-              header.value = reqHeader.Value;
               headers.Add(header);
             }
           }
           else if (!this.configValues.options.isDenyListEmpty)
           {
             if (!this.CheckDenyList(reqHeader.Key))
             {
-              Headers header = new Headers();
-              header.name = reqHeader.Key;
-              header.value = reqHeader.Value;
               headers.Add(header);
             }
           }
           else
           {
-            Headers header = new Headers();
-            header.name = reqHeader.Key;
-            header.value = reqHeader.Value;
             headers.Add(header);
           }
         }