Now checking for errors before parsing newznab feeds

NzbDrone.Core.Test/Files/Indexers/Newznab/error.xml

@@ -0,0 +1,2 @@
+<?xml version="1.0" encoding="utf-8" ?> 
+<error code="100" description="Incorrect user credentials"/>

NzbDrone.Core.Test/NzbDrone.Core.Test.csproj

@@ -252,6 +252,7 @@
     <Content Include="App_Data\Config.xml">
       <CopyToOutputDirectory>Always</CopyToOutputDirectory>
     </Content>
+    <Content Include="Files\Indexers\Newznab\error.xml" />
     <Content Include="Files\Media\H264_sample.mp4">
       <CopyToOutputDirectory>Always</CopyToOutputDirectory>
     </Content>
@@ -351,7 +352,6 @@
     <None Include="packages.config" />
   </ItemGroup>
   <ItemGroup>
-    <Folder Include="Files\Indexers\" />
     <Folder Include="ProviderTests\UpdateProviderTests\" />
   </ItemGroup>
   <Import Project="$(MSBuildToolsPath)\Microsoft.CSharp.targets" />

NzbDrone.Core/Indexers/Exceptions/ApiKeyException.cs

@@ -0,0 +1,19 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using NzbDrone.Common.Exceptions;
+
+namespace NzbDrone.Core.Indexers.Exceptions
+{
+    public class ApiKeyException : NzbDroneException
+    {
+        public ApiKeyException(string message, params object[] args) : base(message, args)
+        {
+        }
+
+        public ApiKeyException(string message) : base(message)
+        {
+        }
+    }
+}

NzbDrone.Core/Indexers/IndexerFetchService.cs

@@ -3,6 +3,7 @@ using System.Collections.Generic;
 using System.Net;
 using NLog;
 using NzbDrone.Common;
+using NzbDrone.Core.Indexers.Exceptions;
 using NzbDrone.Core.IndexerSearch.Definitions;
 using NzbDrone.Core.Parser.Model;
 using System.Linq;
@@ -30,7 +31,6 @@ namespace NzbDrone.Core.Indexers
             _logger = logger;
         }
 
-
         public virtual IList<ReleaseInfo> FetchRss(IIndexer indexer)
         {
             _logger.Debug("Fetching feeds from " + indexer.Name);
@@ -53,7 +53,6 @@ namespace NzbDrone.Core.Indexers
             return result;
         }
 
-
         private IList<ReleaseInfo> Fetch(IIndexer indexer, SeasonSearchCriteria searchCriteria, int offset)
         {
             _logger.Debug("Searching for {0} offset: {1}", searchCriteria, offset);
@@ -117,15 +116,21 @@ namespace NzbDrone.Core.Indexers
                 }
                 catch (WebException webException)
                 {
-                    if (webException.Message.Contains("502") || webException.Message.Contains("503") || webException.Message.Contains("timed out"))
+                    if (webException.Message.Contains("502") || webException.Message.Contains("503") ||
+                        webException.Message.Contains("timed out"))
                     {
-                        _logger.Warn("{0} server is currently unavailable. {1} {2}", indexer.Name, url, webException.Message);
+                        _logger.Warn("{0} server is currently unavailable. {1} {2}", indexer.Name, url,
+                            webException.Message);
                     }
                     else
                     {
                         _logger.Warn("{0} {1} {2}", indexer.Name, url, webException.Message);
                     }
                 }
+                catch (ApiKeyException)
+                {
+                    _logger.Warn("Invalid API Key for {0} {1}", indexer.Name, url);
+                }
                 catch (Exception feedEx)
                 {
                     feedEx.Data.Add("FeedUrl", url);

NzbDrone.Core/Indexers/Newznab/NewznabException.cs

@@ -0,0 +1,19 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using NzbDrone.Common.Exceptions;
+
+namespace NzbDrone.Core.Indexers.Newznab
+{
+    public class NewznabException : NzbDroneException
+    {
+        public NewznabException(string message, params object[] args) : base(message, args)
+        {
+        }
+
+        public NewznabException(string message) : base(message)
+        {
+        }
+    }
+}

NzbDrone.Core/Indexers/Newznab/NewznabParser.cs

@@ -1,6 +1,8 @@
 using System;
 using System.Linq;
+using System.Xml;
 using System.Xml.Linq;
+using NzbDrone.Core.Indexers.Exceptions;
 using NzbDrone.Core.Parser.Model;
 
 namespace NzbDrone.Core.Indexers.Newznab
@@ -46,5 +48,10 @@ namespace NzbDrone.Core.Indexers.Newznab
 
             return currentResult;
         }
+
+        protected override void PreProcess(string source, string url)
+        {
+            NewznabPreProcessor.Process(source, url);
+        }
     }
 }

NzbDrone.Core/Indexers/Newznab/NewznabPreProcessor.cs

@@ -0,0 +1,24 @@
+using System;
+using System.Linq;
+using System.Xml.Linq;
+using NzbDrone.Core.Indexers.Exceptions;
+
+namespace NzbDrone.Core.Indexers.Newznab
+{
+    public static class NewznabPreProcessor
+    {
+        public static void Process(string source, string url)
+        {
+            var xdoc = XDocument.Parse(source);
+            var error = xdoc.Descendants("error").FirstOrDefault();
+
+            if (error == null) return;
+
+            var code = Convert.ToInt32(error.Attribute("code").Value);
+
+            if (code >= 100 && code <= 199) throw new ApiKeyException("Invalid API key: {0}");
+
+            throw new NewznabException("Newznab error detected: {0}", error.Attribute("description").Value);
+        }
+    }
+}

NzbDrone.Core/Indexers/NewznabTestService.cs

@@ -5,6 +5,8 @@ using FluentValidation;
 using FluentValidation.Results;
 using NLog;
 using NzbDrone.Common;
+using NzbDrone.Core.Indexers.Exceptions;
+using NzbDrone.Core.Indexers.Newznab;
 
 namespace NzbDrone.Core.Indexers
 {
@@ -34,21 +36,25 @@ namespace NzbDrone.Core.Indexers
 
             try
             {
-                _httpProvider.DownloadString(indexer.RecentFeed.First());
+                var url = indexer.RecentFeed.First();
-            }
+                var xml = _httpProvider.DownloadString(url);
 
-            catch (Exception)
+                NewznabPreProcessor.Process(xml, url);
+            }
+            catch (ApiKeyException apiKeyException)
             {
-                _logger.Warn("No result returned from RSS Feed, please confirm you're using a newznab indexer");
-
-                var failure = new ValidationFailure("Url", "Invalid Newznab URL entered");
-                throw new ValidationException(new List<ValidationFailure> { failure }.ToArray());
-            }
-
                 _logger.Warn("Indexer returned result for Newznab RSS URL, API Key appears to be invalid");
 
                 var apiKeyFailure = new ValidationFailure("ApiKey", "Invalid API Key");
                 throw new ValidationException(new List<ValidationFailure> { apiKeyFailure }.ToArray());
             }
+            catch (Exception ex)
+            {
+                _logger.Warn("Indexer doesn't appear to be Newznab based");
+
+                var failure = new ValidationFailure("Url", "Invalid Newznab URL entered");
+                throw new ValidationException(new List<ValidationFailure> { failure }.ToArray());
+            }
+        }
     }
 }

NzbDrone.Core/Indexers/RssParserBase.cs

@@ -29,6 +29,8 @@ namespace NzbDrone.Core.Indexers
 
         public IEnumerable<ReleaseInfo> Process(string xml, string url)
         {
+            PreProcess(xml, url);
+
             using (var xmlTextReader = XmlReader.Create(new StringReader(xml), new XmlReaderSettings { ProhibitDtd = false, IgnoreComments = true }))
             {
 
@@ -103,6 +105,10 @@ namespace NzbDrone.Core.Indexers
 
         protected abstract long GetSize(XElement item);
 
+        protected virtual void PreProcess(string source, string url)
+        {
+        }
+
         protected virtual ReleaseInfo PostProcessor(XElement item, ReleaseInfo currentResult)
         {
             return currentResult;

NzbDrone.Core/NzbDrone.Core.csproj

@@ -234,6 +234,7 @@
     <Compile Include="IndexerSearch\SeasonSearchService.cs" />
     <Compile Include="Indexers\BasicTorrentRssParser.cs" />
     <Compile Include="Indexers\DownloadProtocols.cs" />
+    <Compile Include="Indexers\Exceptions\ApiKeyException.cs" />
     <Compile Include="Indexers\Eztv\Eztv.cs" />
     <Compile Include="Indexers\FetchAndParseRssService.cs" />
     <Compile Include="Indexers\IIndexer.cs" />
@@ -241,6 +242,8 @@
     <Compile Include="Indexers\NewznabTestService.cs" />
     <Compile Include="Indexers\IndexerWithSetting.cs" />
     <Compile Include="Indexers\IParseFeed.cs" />
+    <Compile Include="Indexers\Newznab\NewznabException.cs" />
+    <Compile Include="Indexers\Newznab\NewznabPreProcessor.cs" />
     <Compile Include="Indexers\Newznab\SizeParsingException.cs" />
     <Compile Include="Indexers\NullSetting.cs" />
     <Compile Include="Indexers\RssSyncCommand.cs" />

UI/Settings/Indexers/EditView.js

@@ -36,7 +36,7 @@ define(
                         App.vent.trigger(App.Commands.CloseModalCommand);
                     });
 
-                    promise.always(function () {
+                    promise.fail(function () {
                         self.ui.activity.empty();
                     });
                 }
@@ -63,7 +63,7 @@ define(
                         });
                     });
 
-                    promise.always(function () {
+                    promise.fail(function () {
                         self.ui.activity.empty();
                     });
                 }