New: Add authentication options to Webhook

Closes #2257

src/NzbDrone.Common/Http/HttpRequest.cs

@@ -76,5 +76,12 @@ namespace NzbDrone.Common.Http
             var encoding = HttpHeader.GetEncodingFromContentType(Headers.ContentType);
             ContentData = encoding.GetBytes(data);
         }
+
+        public void AddBasicAuthentication(string username, string password)
+        {
+            var authInfo = Convert.ToBase64String(Encoding.GetEncoding("ISO-8859-1").GetBytes($"{username}:{password}"));
+
+            Headers.Set("Authorization", "Basic " + authInfo);
+        }
     }
-}
+}

src/NzbDrone.Core/Notifications/Webhook/WebhookProxy.cs

@@ -1,6 +1,7 @@
-using NzbDrone.Common.Http;
+using NzbDrone.Common.Http;
 using NzbDrone.Common.Serializer;
 using NzbDrone.Core.Rest;
+using NzbDrone.Common.Extensions;
 
 namespace NzbDrone.Core.Notifications.Webhook
 {
@@ -30,6 +31,10 @@ namespace NzbDrone.Core.Notifications.Webhook
                 request.Headers.ContentType = "application/json";
                 request.SetContent(body.ToJson());
 
+                if (settings.Username.IsNotNullOrWhiteSpace() || settings.Password.IsNotNullOrWhiteSpace())
+                {
+                    request.AddBasicAuthentication(settings.Username, settings.Password);
+                }
                 _httpClient.Execute(request);
             }
             catch (RestException ex)

src/NzbDrone.Core/Notifications/Webhook/WebhookSettings.cs

@@ -29,6 +29,12 @@ namespace NzbDrone.Core.Notifications.Webhook
         [FieldDefinition(1, Label = "Method", Type = FieldType.Select, SelectOptions = typeof(WebhookMethod), HelpText = "Which HTTP method to use submit to the Webservice")]
         public int Method { get; set; }
 
+        [FieldDefinition(2, Label = "Username")]
+        public string Username { get; set; }
+
+        [FieldDefinition(3, Label = "Password", Type = FieldType.Password)]
+        public string Password { get; set; }
+
         public NzbDroneValidationResult Validate()
         {
             return new NzbDroneValidationResult(Validator.Validate(this));