Merge branch 'netcore/dev' into netcore/feature/users

.github/BUILD.md

@@ -43,6 +43,8 @@ If you only see a build.bat-file, you're probably on the wrong branch. If you sw
 
 You might run into [Powershell quirks](#powershell-quirks).
 
+If it runs without errors; Hooray! Now you can continue with [the next step](CONTRIBUTING.md#how-do-i-begin) and open the solution and build it.
+
 ### Build Infrastructure
 
 The Umbraco Build infrastructure relies on a PowerShell object. The object can be retrieved with:

.github/CONTRIBUTING.md

@@ -28,7 +28,7 @@ This project and everyone participating in it, is governed by the [our Code of C
 [Working with the code](#working-with-the-code)
   * [Building Umbraco from source code](#building-umbraco-from-source-code)
   * [Working with the source code](#working-with-the-source-code)
-  * [Making changes after the PR was opened](#making-changes-after-the-pr-was-opened)
+  * [Making changes after the PR is open](#making-changes-after-the-pr-is-open)
   * [Which branch should I target for my contributions?](#which-branch-should-i-target-for-my-contributions)
   * [Keeping your Umbraco fork in sync with the main repository](#keeping-your-umbraco-fork-in-sync-with-the-main-repository)
 
@@ -65,7 +65,7 @@ Great question! The short version goes like this:
   * **Change** - make your changes, experiment, have fun, explore and learn, and don't be afraid. We welcome all contributions and will [happily give feedback](#questions)
   * **Commit** - done? Yay! 🎉 **Important:** create a new branch now and name it after the issue you're fixing, we usually follow the format: `temp-12345`. This means it's a temporary branch for the particular issue you're working on, in this case `12345`. When you have a branch, commit your changes. Don't commit to `v8/contrib`, create a new branch first.
   * **Push** - great, now you can push the changes up to your fork on GitHub
-  * **Create pull request** - exciting! You're ready to show us your changes (or not quite ready, you just need some feedback to progress - you can now make use of GitHub's draft pull request status, detailed [here] (https://github.blog/2019-02-14-introducing-draft-pull-requests/)). GitHub has picked up on the new branch you've pushed and will offer to create a Pull Request. Click that green button and away you go.
+  * **Create pull request** - exciting! You're ready to show us your changes (or not quite ready, you just need some feedback to progress - you can now make use of GitHub's draft pull request status, detailed [here](https://github.blog/2019-02-14-introducing-draft-pull-requests/)). GitHub has picked up on the new branch you've pushed and will offer to create a Pull Request. Click that green button and away you go.
 
   ![Create a pull request](img/createpullrequest.png)
 

.gitignore

@@ -100,6 +100,9 @@ src/Umbraco.Web.UI/[Uu]mbraco/[Jj]s/loader.dev.js
 src/Umbraco.Web.UI/[Uu]mbraco/[Jj]s/main.js
 src/Umbraco.Web.UI/[Uu]mbraco/[Jj]s/app.js
 src/Umbraco.Web.UI/[Uu]mbraco/[Jj]s/canvasdesigner.*.js
+src/Umbraco.Web.UI/[Uu]mbraco/[Jj]s/navigation.controller.js
+src/Umbraco.Web.UI/[Uu]mbraco/[Jj]s/main.controller.js
+src/Umbraco.Web.UI/[Uu]mbraco/[Jj]s/utilities.js
 
 src/Umbraco.Web.UI/[Uu]mbraco/[Vv]iews/
 src/Umbraco.Web.UI/[Uu]mbraco/[Vv]iews/**/*.js
@@ -164,3 +167,12 @@ build/temp/
 # eof
 /src/Umbraco.Web.UI.Client/TESTS-*.xml
 /src/ApiDocs/api/*
+/src/Umbraco.Web.UI.NetCore/wwwroot/Media/*
+/src/Umbraco.Web.UI.NetCore/wwwroot/is-cache/*
+/src/Umbraco.Tests.Integration/App_Data/*
+/src/Umbraco.Tests.Integration/TEMP/*
+/src/Umbraco.Web.UI.NetCore/wwwroot/Umbraco/assets/*
+/src/Umbraco.Web.UI.NetCore/wwwroot/Umbraco/js/*
+/src/Umbraco.Web.UI.NetCore/wwwroot/Umbraco/lib/*
+/src/Umbraco.Web.UI.NetCore/wwwroot/Umbraco/views/*
+/src/Umbraco.Web.UI.NetCore/wwwroot/App_Data/TEMP/*

build/NuSpecs/UmbracoCms.Web.nuspec

@@ -25,7 +25,7 @@
                   not want this to happen as the alpha of the next major is, really, the next major already.
                 -->
                 <dependency id="UmbracoCms.Core" version="[$version$]" />
-                <dependency id="ClientDependency" version="[1.9.8,1.999999)" />
+                <dependency id="ClientDependency" version="[1.9.9,1.999999)" />
                 <dependency id="ClientDependency-Mvc5" version="[1.9.3,1.999999)" />
                 <dependency id="Examine" version="[1.0.2,1.999999)" />
                 <dependency id="HtmlAgilityPack" version="[1.8.14,1.999999)" />

build/build-bootstrap.ps1

@@ -22,6 +22,8 @@
   # get NuGet
   $cache = 4
   $nuget = "$scriptTemp\nuget.exe"
+  # ensure the correct NuGet-source is used. This one is used by Umbraco
+  $nugetsourceUmbraco = "https://www.myget.org/F/umbracocore/api/v3/index.json"
   if (-not $local)
   {
     $source = "https://dist.nuget.org/win-x86-commandline/latest/nuget.exe"
@@ -61,7 +63,7 @@
   # get the build system
   if (-not $local)
   {
-    $params = "-OutputDirectory", $scriptTemp, "-Verbosity", "quiet", "-PreRelease"
+    $params = "-OutputDirectory", $scriptTemp, "-Verbosity", "quiet", "-PreRelease", "-Source", $nugetsourceUmbraco
     &$nuget install Umbraco.Build @params
     if (-not $?) { throw "Failed to download Umbraco.Build." }
   }

build/build.ps1

@@ -375,11 +375,14 @@
 
   })
 
+  $nugetsourceUmbraco = "https://api.nuget.org/v3/index.json"
+
   $ubuild.DefineMethod("RestoreNuGet",
   {
     Write-Host "Restore NuGet"
     Write-Host "Logging to $($this.BuildTemp)\nuget.restore.log"
-    &$this.BuildEnv.NuGet restore "$($this.SolutionRoot)\src\Umbraco.sln" > "$($this.BuildTemp)\nuget.restore.log"
+	$params = "-Source", $nugetsourceUmbraco   
+    &$this.BuildEnv.NuGet restore "$($this.SolutionRoot)\src\Umbraco.sln" > "$($this.BuildTemp)\nuget.restore.log" @params
     if (-not $?) { throw "Failed to restore NuGet packages." }
   })
 

src/Umbraco.Configuration/AspNetCoreConfigsFactory.cs

@@ -0,0 +1,50 @@
+using Microsoft.Extensions.Configuration;
+using Umbraco.Configuration.Models;
+using Umbraco.Core.Configuration;
+using Umbraco.Core.Configuration.HealthChecks;
+using Umbraco.Core.Configuration.UmbracoSettings;
+using ConnectionStrings = Umbraco.Configuration.Models.ConnectionStrings;
+using CoreDebugSettings = Umbraco.Configuration.Models.CoreDebugSettings;
+
+namespace Umbraco.Configuration
+{
+    public class AspNetCoreConfigsFactory : IConfigsFactory
+    {
+        private readonly IConfiguration _configuration;
+
+        public AspNetCoreConfigsFactory(IConfiguration configuration)
+        {
+            _configuration = configuration ?? throw new System.ArgumentNullException(nameof(configuration));
+        }
+
+        public Configs Create()
+        {
+            var configs = new Configs();
+
+            configs.Add<ITourSettings>(() => new TourSettings(_configuration));
+            configs.Add<ICoreDebugSettings>(() => new CoreDebugSettings(_configuration));
+            configs.Add<IRequestHandlerSettings>(() => new RequestHandlerSettings(_configuration));
+            configs.Add<ISecuritySettings>(() => new SecuritySettings(_configuration));
+            configs.Add<IUserPasswordConfiguration>(() => new UserPasswordConfigurationSettings(_configuration));
+            configs.Add<IMemberPasswordConfiguration>(() => new MemberPasswordConfigurationSettings(_configuration));
+            configs.Add<IKeepAliveSettings>(() => new KeepAliveSettings(_configuration));
+            configs.Add<IContentSettings>(() => new ContentSettings(_configuration));
+            configs.Add<IHealthChecksSettings>(() => new HealthChecksSettings(_configuration));
+            configs.Add<ILoggingSettings>(() => new LoggingSettings(_configuration));
+            configs.Add<IExceptionFilterSettings>(() => new ExceptionFilterSettings(_configuration));
+            configs.Add<IActiveDirectorySettings>(() => new ActiveDirectorySettings(_configuration));
+            configs.Add<IRuntimeSettings>(() => new RuntimeSettings(_configuration));
+            configs.Add<ITypeFinderSettings>(() => new TypeFinderSettings(_configuration));
+            configs.Add<INuCacheSettings>(() => new NuCacheSettings(_configuration));
+            configs.Add<IWebRoutingSettings>(() => new WebRoutingSettings(_configuration));
+            configs.Add<IIndexCreatorSettings>(() => new IndexCreatorSettings(_configuration));
+            configs.Add<IModelsBuilderConfig>(() => new ModelsBuilderConfig(_configuration));
+            configs.Add<IHostingSettings>(() => new HostingSettings(_configuration));
+            configs.Add<IGlobalSettings>(() => new GlobalSettings(_configuration));
+            configs.Add<IConnectionStrings>(() => new ConnectionStrings(_configuration));
+            configs.Add<IImagingSettings>(() => new ImagingSettings(_configuration));
+
+            return configs;
+        }
+    }
+}

src/Umbraco.Configuration/CaseInsensitiveEnumConfigConverter.cs

@@ -1,32 +0,0 @@
-using System;
-using System.ComponentModel;
-using System.Globalization;
-using System.Linq;
-using System.Configuration;
-
-namespace Umbraco.Core.Configuration
-{
-    /// <summary>
-    /// A case-insensitive configuration converter for enumerations.
-    /// </summary>
-    /// <typeparam name="T">The type of the enumeration.</typeparam>
-    public class CaseInsensitiveEnumConfigConverter<T> : ConfigurationConverterBase
-        where T : struct
-    {
-        public override object ConvertFrom(ITypeDescriptorContext ctx, CultureInfo ci, object data)
-        {
-            if (data == null)
-                throw new ArgumentNullException("data");
-
-            //return Enum.Parse(typeof(T), (string)data, true);
-
-            T value;
-            if (Enum.TryParse((string)data, true, out value))
-                return value;
-
-            throw new Exception(string.Format("\"{0}\" is not valid {1} value. Valid values are: {2}.",
-                data, typeof(T).Name,
-                string.Join(", ", Enum.GetValues(typeof(T)).Cast<T>())));
-        }
-    }
-}

src/Umbraco.Configuration/ConfigsFactory.cs

@@ -1,34 +1,62 @@
-using System.Configuration;
+using Umbraco.Configuration;
+using Umbraco.Configuration.Implementations;
+using Umbraco.Configuration.Legacy;
 using Umbraco.Core.Configuration.HealthChecks;
+using Umbraco.Core.Configuration.Legacy;
 using Umbraco.Core.Configuration.UmbracoSettings;
-using Umbraco.Core.IO;
 
 namespace Umbraco.Core.Configuration
 {
     public class ConfigsFactory : IConfigsFactory
     {
         public IHostingSettings HostingSettings { get; } = new HostingSettings();
+        public ICoreDebugSettings CoreDebugSettings { get; } = new CoreDebugSettings();
+        public IIndexCreatorSettings IndexCreatorSettings { get; } = new IndexCreatorSettings();
+        public INuCacheSettings NuCacheSettings { get; } = new NuCacheSettings();
+        public ITypeFinderSettings TypeFinderSettings { get; } = new TypeFinderSettings();
+        public IRuntimeSettings RuntimeSettings { get; } = new RuntimeSettings();
+        public IActiveDirectorySettings ActiveDirectorySettings { get; } = new ActiveDirectorySettings();
+        public IExceptionFilterSettings ExceptionFilterSettings { get; } = new ExceptionFilterSettings();
+        public ITourSettings TourSettings { get; } = new TourSettings();
+        public ILoggingSettings LoggingSettings { get; } = new LoggingSettings();
+        public IKeepAliveSettings KeepAliveSettings { get; } = new KeepAliveSettings();
+        public IWebRoutingSettings WebRoutingSettings { get; } = new WebRoutingSettings();
+        public IRequestHandlerSettings RequestHandlerSettings { get; } = new RequestHandlerSettings();
+        public ISecuritySettings SecuritySettings { get; } = new SecuritySettings();
+        public IUserPasswordConfiguration UserPasswordConfigurationSettings { get; } = new UserPasswordConfigurationSettings();
+        public IMemberPasswordConfiguration MemberPasswordConfigurationSettings { get; } = new MemberPasswordConfigurationSettings();
+        public IContentSettings ContentSettings { get; } = new ContentSettings();
+        public IGlobalSettings GlobalSettings { get; } = new GlobalSettings();
+        public IHealthChecksSettings HealthChecksSettings { get; } = new HealthChecksSettings();
+        public IConnectionStrings ConnectionStrings { get; } = new ConnectionStrings();
+        public IModelsBuilderConfig ModelsBuilderConfig { get; } = new ModelsBuilderConfig();
 
-        public ICoreDebug CoreDebug { get; } = new CoreDebug();
-
-        public IUmbracoSettingsSection UmbracoSettings { get; }
-
-        public Configs Create(IIOHelper ioHelper)
+        public Configs Create()
         {
-            var configs =  new Configs(section => ConfigurationManager.GetSection(section));
-            configs.Add<IGlobalSettings>(() => new GlobalSettings(ioHelper));
-            configs.Add(() => HostingSettings);
+            var configs =  new Configs();
 
-            configs.Add<IUmbracoSettingsSection>("umbracoConfiguration/settings");
-            configs.Add<IHealthChecks>("umbracoConfiguration/HealthChecks");
+            configs.Add<IGlobalSettings>(() => GlobalSettings);
+            configs.Add<IHostingSettings>(() => HostingSettings);
+            configs.Add<IHealthChecksSettings>(() => HealthChecksSettings);
+            configs.Add<ICoreDebugSettings>(() => CoreDebugSettings);
+            configs.Add<IConnectionStrings>(() => ConnectionStrings);
+            configs.Add<IModelsBuilderConfig>(() => ModelsBuilderConfig);
+            configs.Add<IIndexCreatorSettings>(() => IndexCreatorSettings);
+            configs.Add<INuCacheSettings>(() => NuCacheSettings);
+            configs.Add<ITypeFinderSettings>(() => TypeFinderSettings);
+            configs.Add<IRuntimeSettings>(() => RuntimeSettings);
+            configs.Add<IActiveDirectorySettings>(() => ActiveDirectorySettings);
+            configs.Add<IExceptionFilterSettings>(() => ExceptionFilterSettings);
+            configs.Add<ITourSettings>(() => TourSettings);
+            configs.Add<ILoggingSettings>(() => LoggingSettings);
+            configs.Add<IKeepAliveSettings>(() => KeepAliveSettings);
+            configs.Add<IWebRoutingSettings>(() => WebRoutingSettings);
+            configs.Add<IRequestHandlerSettings>(() => RequestHandlerSettings);
+            configs.Add<ISecuritySettings>(() => SecuritySettings);
+            configs.Add<IUserPasswordConfiguration>(() => UserPasswordConfigurationSettings);
+            configs.Add<IMemberPasswordConfiguration>(() => MemberPasswordConfigurationSettings);
+            configs.Add<IContentSettings>(() => ContentSettings);
 
-            // Password configuration is held within IUmbracoSettingsSection from umbracoConfiguration/settings but we'll add explicitly
-            // so it can be independently retrieved in classes that need it.
-            configs.AddPasswordConfigurations();
-
-            configs.Add(() => CoreDebug);
-            configs.Add<IConnectionStrings>(() => new ConnectionStrings(ioHelper));
-            configs.AddCoreConfigs(ioHelper);
             return configs;
         }
     }

src/Umbraco.Configuration/ConnectionStrings.cs

@@ -1,45 +0,0 @@
-using System;
-using System.Configuration;
-using System.Linq;
-using System.Xml.Linq;
-using Umbraco.Core.IO;
-
-namespace Umbraco.Core.Configuration
-{
-    public class ConnectionStrings : IConnectionStrings
-    {
-        private readonly IIOHelper _ioHelper;
-
-        public ConnectionStrings(IIOHelper ioHelper)
-        {
-            _ioHelper = ioHelper;
-        }
-
-        public ConfigConnectionString this[string key]
-        {
-            get
-            {
-                var settings = ConfigurationManager.ConnectionStrings[key];
-                if (settings == null) return null;
-                return new ConfigConnectionString(settings.ConnectionString, settings.ProviderName, settings.Name);
-            }
-        }
-
-        public void RemoveConnectionString(string key)
-        {
-            var fileName = _ioHelper.MapPath(string.Format("{0}/web.config", _ioHelper.Root));
-            var xml = XDocument.Load(fileName, LoadOptions.PreserveWhitespace);
-
-            var appSettings = xml.Root.DescendantsAndSelf("appSettings").Single();
-            var setting = appSettings.Descendants("add").FirstOrDefault(s => s.Attribute("key").Value == key);
-
-            if (setting != null)
-            {
-                setting.Remove();
-                xml.Save(fileName, SaveOptions.DisableFormatting);
-                ConfigurationManager.RefreshSection("appSettings");
-            }
-            var settings = ConfigurationManager.ConnectionStrings[key];
-        }
-    }
-}

src/Umbraco.Configuration/HealthChecks/HealthChecksSection.cs

@@ -1,10 +1,9 @@
 using System;
-using System.Collections.Generic;
 using System.Configuration;
 
 namespace Umbraco.Core.Configuration.HealthChecks
 {
-    public class HealthChecksSection : ConfigurationSection, IHealthChecks
+    public class HealthChecksSection : ConfigurationSection
     {
         private const string DisabledChecksKey = "disabledChecks";
         private const string NotificationSettingsKey = "notificationSettings";
@@ -21,14 +20,5 @@ namespace Umbraco.Core.Configuration.HealthChecks
             get { return ((HealthCheckNotificationSettingsElement)(base[NotificationSettingsKey])); }
         }
 
-        IEnumerable<IDisabledHealthCheck> IHealthChecks.DisabledChecks
-        {
-            get { return DisabledChecks; }
-        }
-
-        IHealthCheckNotificationSettings IHealthChecks.NotificationSettings
-        {
-            get { return NotificationSettings; }
-        }
     }
 }

src/Umbraco.Configuration/Legacy/ActiveDirectorySettings.cs

@@ -0,0 +1,15 @@
+using System.Configuration;
+using Umbraco.Core.Configuration;
+
+namespace Umbraco.Configuration.Legacy
+{
+    public class ActiveDirectorySettings : IActiveDirectorySettings
+    {
+        public ActiveDirectorySettings()
+        {
+            ActiveDirectoryDomain = ConfigurationManager.AppSettings["ActiveDirectoryDomain"];
+        }
+
+        public string ActiveDirectoryDomain { get; }
+    }
+}

src/Umbraco.Configuration/Legacy/ConfigurationManagerConfigBase.cs

@@ -0,0 +1,22 @@
+using System.Configuration;
+using Umbraco.Core.Configuration.UmbracoSettings;
+
+namespace Umbraco.Configuration.Implementations
+{
+    internal abstract class ConfigurationManagerConfigBase
+    {
+        private UmbracoSettingsSection _umbracoSettingsSection;
+
+        protected UmbracoSettingsSection UmbracoSettingsSection
+        {
+            get
+            {
+                if (_umbracoSettingsSection is null)
+                {
+                    _umbracoSettingsSection = ConfigurationManager.GetSection("umbracoConfiguration/settings") as UmbracoSettingsSection;
+                }
+                return _umbracoSettingsSection;
+            }
+        }
+    }
+}

src/Umbraco.Configuration/Legacy/ConnectionStrings.cs

@@ -0,0 +1,17 @@
+using System.Configuration;
+
+namespace Umbraco.Core.Configuration
+{
+    public class ConnectionStrings : IConnectionStrings
+    {
+        public ConfigConnectionString this[string key]
+        {
+            get
+            {
+                var settings = ConfigurationManager.ConnectionStrings[key];
+                if (settings == null) return null;
+                return new ConfigConnectionString(settings.ConnectionString, settings.ProviderName, settings.Name);
+            }
+        }
+    }
+}

src/Umbraco.Configuration/Legacy/ContentSettings.cs

@@ -0,0 +1,22 @@
+using System.Collections.Generic;
+using Umbraco.Core.Configuration.UmbracoSettings;
+using Umbraco.Core.Macros;
+
+namespace Umbraco.Configuration.Implementations
+{
+    internal class ContentSettings : ConfigurationManagerConfigBase, IContentSettings
+    {
+        public string NotificationEmailAddress => UmbracoSettingsSection.Content.Notifications.NotificationEmailAddress;
+        public bool DisableHtmlEmail => UmbracoSettingsSection.Content.Notifications.DisableHtmlEmail;
+        public IEnumerable<string> ImageFileTypes => UmbracoSettingsSection.Content.Imaging.ImageFileTypes;
+        public IEnumerable<IImagingAutoFillUploadField> ImageAutoFillProperties => UmbracoSettingsSection.Content.Imaging.ImageAutoFillProperties;
+        public bool ResolveUrlsFromTextString => UmbracoSettingsSection.Content.ResolveUrlsFromTextString;
+        public IEnumerable<IContentErrorPage> Error404Collection => UmbracoSettingsSection.Content.Error404Collection;
+        public string PreviewBadge => UmbracoSettingsSection.Content.PreviewBadge;
+        public MacroErrorBehaviour MacroErrorBehaviour => UmbracoSettingsSection.Content.MacroErrors;
+        public IEnumerable<string> DisallowedUploadFiles => UmbracoSettingsSection.Content.DisallowedUploadFiles;
+        public IEnumerable<string> AllowedUploadFiles => UmbracoSettingsSection.Content.AllowedUploadFiles;
+        public bool ShowDeprecatedPropertyEditors => UmbracoSettingsSection.Content.ShowDeprecatedPropertyEditors;
+        public string LoginBackgroundImage => UmbracoSettingsSection.Content.LoginBackgroundImage;
+    }
+}

src/Umbraco.Configuration/Legacy/CoreDebugSettings.cs

@@ -3,9 +3,9 @@ using System.Configuration;
 
 namespace Umbraco.Core.Configuration
 {
-    public class CoreDebug : ICoreDebug
+    public class CoreDebugSettings : ICoreDebugSettings
     {
-        public CoreDebug()
+        public CoreDebugSettings()
         {
             var appSettings = ConfigurationManager.AppSettings;
             LogUncompletedScopes = string.Equals("true", appSettings[Constants.AppSettings.Debug.LogUncompletedScopes], StringComparison.OrdinalIgnoreCase);

src/Umbraco.Configuration/Legacy/ExceptionFilterSettings.cs

@@ -0,0 +1,18 @@
+using System.Configuration;
+using Umbraco.Core.Configuration;
+
+namespace Umbraco.Configuration.Legacy
+{
+    public class ExceptionFilterSettings : IExceptionFilterSettings
+    {
+        public ExceptionFilterSettings()
+        {
+            if (bool.TryParse(ConfigurationManager.AppSettings["Umbraco.Web.DisableModelBindingExceptionFilter"],
+                out var disabled))
+            {
+                Disabled = disabled;
+            }
+        }
+        public bool Disabled { get; }
+    }
+}

src/Umbraco.Configuration/Legacy/GlobalSettings.cs

@@ -3,59 +3,12 @@ using System.Configuration;
 using System.Linq;
 using System.Net.Mail;
 using System.Xml.Linq;
+using Umbraco.Composing;
 using Umbraco.Configuration;
 using Umbraco.Core.IO;
 
-namespace Umbraco.Core.Configuration
+namespace Umbraco.Core.Configuration.Legacy
 {
-    public class HostingSettings : IHostingSettings
-    {
-        private bool? _debugMode;
-
-        /// <inheritdoc />
-        public LocalTempStorage LocalTempStorageLocation
-        {
-            get
-            {
-                var setting = ConfigurationManager.AppSettings[Constants.AppSettings.LocalTempStorage];
-                if (!string.IsNullOrWhiteSpace(setting))
-                    return Enum<LocalTempStorage>.Parse(setting);
-
-                return LocalTempStorage.Default;
-            }
-        }
-
-        /// <summary>
-        /// Gets a value indicating whether umbraco is running in [debug mode].
-        /// </summary>
-        /// <value><c>true</c> if [debug mode]; otherwise, <c>false</c>.</value>
-        public bool DebugMode
-        {
-            get
-            {
-                if (!_debugMode.HasValue)
-                {
-                    try
-                    {
-                        if (ConfigurationManager.GetSection("system.web/compilation") is ConfigurationSection compilation)
-                        {
-                            var debugElement = compilation.ElementInformation.Properties["debug"];
-
-                            _debugMode = debugElement != null && (debugElement.Value is bool debug && debug);
-
-                        }
-                    }
-                    catch
-                    {
-                        _debugMode = false;
-                    }
-                }
-
-                return _debugMode.GetValueOrDefault();
-            }
-        }
-    }
-
     // TODO:  Replace checking for if the app settings exist and returning an empty string, instead return the defaults!
     // TODO: need to massively cleanup these configuration classes
 
@@ -64,7 +17,6 @@ namespace Umbraco.Core.Configuration
     /// </summary>
     public class GlobalSettings : IGlobalSettings
     {
-        private readonly IIOHelper _ioHelper;
 
         // TODO these should not be static
         private static string _reservedPaths;
@@ -74,11 +26,6 @@ namespace Umbraco.Core.Configuration
         internal const string StaticReservedPaths = "~/app_plugins/,~/install/,~/mini-profiler-resources/,"; //must end with a comma!
         internal const string StaticReservedUrls = "~/config/splashes/noNodes.aspx,~/.well-known,"; //must end with a comma!
 
-        public GlobalSettings(IIOHelper ioHelper)
-        {
-            _ioHelper = ioHelper;
-        }
-
         /// <summary>
         /// Used in unit testing to reset all config items that were set with property setters (i.e. did not come from config)
         /// </summary>
@@ -184,8 +131,8 @@ namespace Umbraco.Core.Configuration
                 if (_reservedPaths != null) return _reservedPaths;
 
                 var reservedPaths = StaticReservedPaths;
-                var umbPath = ConfigurationManager.AppSettings.ContainsKey(Constants.AppSettings.Path) && !ConfigurationManager.AppSettings[Constants.AppSettings.Path].IsNullOrWhiteSpace()
-                    ? ConfigurationManager.AppSettings[Constants.AppSettings.Path]
+                var umbPath = ConfigurationManager.AppSettings.ContainsKey(Constants.AppSettings.UmbracoPath) && !ConfigurationManager.AppSettings[Constants.AppSettings.UmbracoPath].IsNullOrWhiteSpace()
+                    ? ConfigurationManager.AppSettings[Constants.AppSettings.UmbracoPath]
                     : "~/umbraco";
                 //always add the umbraco path to the list
                 reservedPaths += umbPath.EnsureEndsWith(',');
@@ -199,20 +146,6 @@ namespace Umbraco.Core.Configuration
             }
         }
 
-        /// <summary>
-        /// Gets the path to umbraco's root directory (/umbraco by default).
-        /// </summary>
-        /// <value>The path.</value>
-        public string Path
-        {
-            get
-            {
-                return ConfigurationManager.AppSettings.ContainsKey(Constants.AppSettings.Path)
-                    ? _ioHelper.ResolveUrl(ConfigurationManager.AppSettings[Constants.AppSettings.Path])
-                    : string.Empty;
-            }
-        }
-
         /// <summary>
         /// Gets or sets the configuration status. This will return the version number of the currently installed umbraco instance.
         /// </summary>
@@ -227,7 +160,7 @@ namespace Umbraco.Core.Configuration
             }
             set
             {
-                SaveSetting(Constants.AppSettings.ConfigurationStatus, value, _ioHelper);
+                SaveSetting(Constants.AppSettings.ConfigurationStatus, value, Current.IOHelper); //TODO remove
             }
         }
 
@@ -238,7 +171,7 @@ namespace Umbraco.Core.Configuration
         /// <param name="value">Value of the setting to be saved.</param>
         internal static void SaveSetting(string key, string value, IIOHelper ioHelper)
         {
-            var fileName = ioHelper.MapPath(string.Format("{0}/web.config", ioHelper.Root));
+            var fileName = ioHelper.MapPath("~/web.config");
             var xml = XDocument.Load(fileName, LoadOptions.PreserveWhitespace);
 
             var appSettings = xml.Root.DescendantsAndSelf("appSettings").Single();
@@ -254,7 +187,7 @@ namespace Umbraco.Core.Configuration
             ConfigurationManager.RefreshSection("appSettings");
         }
 
-  
+
         /// <summary>
         /// Gets the time out in minutes.
         /// </summary>
@@ -382,6 +315,10 @@ namespace Umbraco.Core.Configuration
         private string _databaseFactoryServerVersion;
         public string DatabaseFactoryServerVersion => GetterWithDefaultValue(Constants.AppSettings.Debug.DatabaseFactoryServerVersion, string.Empty, ref _databaseFactoryServerVersion);
 
+        private string _mainDomLock;
+
+        public string MainDomLock => GetterWithDefaultValue(Constants.AppSettings.MainDomLock, string.Empty, ref _mainDomLock);
+
         private T GetterWithDefaultValue<T>(string appSettingKey, T defaultValue, ref T backingField)
         {
             if (backingField != null) return backingField;
@@ -407,5 +344,22 @@ namespace Umbraco.Core.Configuration
 
             return backingField;
         }
+
+        /// <summary>
+        /// Gets the path to the razor file used when no published content is available.
+        /// </summary>
+        public string NoNodesViewPath
+        {
+            get
+            {
+                var configuredValue = ConfigurationManager.AppSettings[Constants.AppSettings.NoNodesViewPath];
+                if (!string.IsNullOrWhiteSpace(configuredValue))
+                {
+                    return configuredValue;
+                }
+
+                return "~/config/splashes/NoNodes.cshtml";
+            }
+        }
     }
 }

src/Umbraco.Configuration/Legacy/HealthChecksSettings.cs

@@ -0,0 +1,26 @@
+using System.Collections.Generic;
+using System.Configuration;
+using Umbraco.Core.Configuration.HealthChecks;
+
+namespace Umbraco.Core.Configuration.Legacy
+{
+    public class HealthChecksSettings : IHealthChecksSettings
+    {
+        private HealthChecksSection _healthChecksSection;
+
+        private HealthChecksSection HealthChecksSection
+        {
+            get
+            {
+                if (_healthChecksSection is null)
+                {
+                    _healthChecksSection = ConfigurationManager.GetSection("umbracoConfiguration/HealthChecks") as HealthChecksSection;
+                }
+                return _healthChecksSection;
+            }
+        }
+
+        public IEnumerable<IDisabledHealthCheck> DisabledChecks => HealthChecksSection.DisabledChecks;
+        public IHealthCheckNotificationSettings NotificationSettings => HealthChecksSection.NotificationSettings;
+    }
+}

src/Umbraco.Configuration/Legacy/HostingSettings.cs

@@ -0,0 +1,54 @@
+using System.Configuration;
+
+namespace Umbraco.Core.Configuration.Legacy
+{
+    public class HostingSettings : IHostingSettings
+    {
+        private bool? _debugMode;
+
+        /// <inheritdoc />
+        public LocalTempStorage LocalTempStorageLocation
+        {
+            get
+            {
+                var setting = ConfigurationManager.AppSettings[Constants.AppSettings.LocalTempStorage];
+                if (!string.IsNullOrWhiteSpace(setting))
+                    return Enum<LocalTempStorage>.Parse(setting);
+
+                return LocalTempStorage.Default;
+            }
+        }
+
+        public string ApplicationVirtualPath => null;
+
+        /// <summary>
+        /// Gets a value indicating whether umbraco is running in [debug mode].
+        /// </summary>
+        /// <value><c>true</c> if [debug mode]; otherwise, <c>false</c>.</value>
+        public bool DebugMode
+        {
+            get
+            {
+                if (!_debugMode.HasValue)
+                {
+                    try
+                    {
+                        if (ConfigurationManager.GetSection("system.web/compilation") is ConfigurationSection compilation)
+                        {
+                            var debugElement = compilation.ElementInformation.Properties["debug"];
+
+                            _debugMode = debugElement != null && (debugElement.Value is bool debug && debug);
+
+                        }
+                    }
+                    catch
+                    {
+                        _debugMode = false;
+                    }
+                }
+
+                return _debugMode.GetValueOrDefault();
+            }
+        }
+    }
+}

src/Umbraco.Configuration/Legacy/IndexCreatorSettings.cs

@@ -0,0 +1,15 @@
+using System.Configuration;
+using Umbraco.Core.Configuration;
+
+namespace Umbraco.Configuration.Legacy
+{
+    public class IndexCreatorSettings : IIndexCreatorSettings
+    {
+        public IndexCreatorSettings()
+        {
+           LuceneDirectoryFactory = ConfigurationManager.AppSettings["Umbraco.Examine.LuceneDirectoryFactory"];
+        }
+
+        public string LuceneDirectoryFactory { get; }
+    }
+}

src/Umbraco.Configuration/Legacy/KeepAliveSettings.cs

@@ -0,0 +1,10 @@
+using Umbraco.Core.Configuration.UmbracoSettings;
+
+namespace Umbraco.Configuration.Implementations
+{
+    internal class KeepAliveSettings : ConfigurationManagerConfigBase, IKeepAliveSettings
+    {
+        public bool DisableKeepAliveTask  => UmbracoSettingsSection.KeepAlive.DisableKeepAliveTask;
+        public string KeepAlivePingUrl  => UmbracoSettingsSection.KeepAlive.KeepAlivePingUrl;
+    }
+}

src/Umbraco.Configuration/Legacy/LoggingSettings.cs

@@ -0,0 +1,9 @@
+using Umbraco.Core.Configuration.UmbracoSettings;
+
+namespace Umbraco.Configuration.Implementations
+{
+    internal class LoggingSettings : ConfigurationManagerConfigBase, ILoggingSettings
+    {
+        public int MaxLogAge => UmbracoSettingsSection.Logging.MaxLogAge;
+    }
+}

src/Umbraco.Configuration/Legacy/MemberPasswordConfigurationSettings.cs

@@ -0,0 +1,16 @@
+using Umbraco.Core.Configuration;
+
+namespace Umbraco.Configuration.Implementations
+{
+    internal class MemberPasswordConfigurationSettings : ConfigurationManagerConfigBase, IMemberPasswordConfiguration
+    {
+        public int RequiredLength => UmbracoSettingsSection.Security.UserPasswordConfiguration.RequiredLength;
+        public bool RequireNonLetterOrDigit => UmbracoSettingsSection.Security.UserPasswordConfiguration.RequireNonLetterOrDigit;
+        public bool RequireDigit => UmbracoSettingsSection.Security.UserPasswordConfiguration.RequireDigit;
+        public bool RequireLowercase=> UmbracoSettingsSection.Security.UserPasswordConfiguration.RequireLowercase;
+        public bool RequireUppercase=> UmbracoSettingsSection.Security.UserPasswordConfiguration.RequireUppercase;
+        public bool UseLegacyEncoding=> UmbracoSettingsSection.Security.UserPasswordConfiguration.UseLegacyEncoding;
+        public string HashAlgorithmType=> UmbracoSettingsSection.Security.UserPasswordConfiguration.HashAlgorithmType;
+        public int MaxFailedAccessAttemptsBeforeLockout => UmbracoSettingsSection.Security.UserPasswordConfiguration.MaxFailedAccessAttemptsBeforeLockout;
+    }
+}

src/Umbraco.Configuration/Legacy/ModelsBuilderConfig.cs

@@ -2,18 +2,18 @@
 using System.Configuration;
 using System.IO;
 using System.Threading;
-using System.Web.Configuration;
+using Umbraco.Core.Configuration;
 using Umbraco.Core;
 using Umbraco.Core.IO;
 
-namespace Umbraco.ModelsBuilder.Embedded.Configuration
+namespace Umbraco.Configuration.Legacy
 {
     /// <summary>
     /// Represents the models builder configuration.
     /// </summary>
     public class ModelsBuilderConfig : IModelsBuilderConfig
     {
-        private readonly IIOHelper _ioHelper;
+
         private const string Prefix = "Umbraco.ModelsBuilder.";
         private object _modelsModelLock;
         private bool _modelsModelConfigured;
@@ -21,23 +21,21 @@ namespace Umbraco.ModelsBuilder.Embedded.Configuration
         private object _flagOutOfDateModelsLock;
         private bool _flagOutOfDateModelsConfigured;
         private bool _flagOutOfDateModels;
-        public const string DefaultModelsNamespace = "Umbraco.Web.PublishedModels";
 
-        public string DefaultModelsDirectory => _ioHelper.MapPath("~/App_Data/Models");
+
+        public string DefaultModelsDirectory => "~/App_Data/Models";
 
         /// <summary>
         /// Initializes a new instance of the <see cref="ModelsBuilderConfig"/> class.
         /// </summary>
-        public ModelsBuilderConfig(IIOHelper ioHelper)
+        public ModelsBuilderConfig()
         {
-            _ioHelper = ioHelper ?? throw new ArgumentNullException(nameof(ioHelper));
-
             // giant kill switch, default: false
             // must be explicitely set to true for anything else to happen
             Enable = ConfigurationManager.AppSettings[Prefix + "Enable"] == "true";
 
             // ensure defaults are initialized for tests
-            ModelsNamespace = DefaultModelsNamespace;
+            ModelsNamespace = Constants.ModelsBuilder.DefaultModelsNamespace;
             ModelsDirectory  = DefaultModelsDirectory;
             DebugLevel = 0;
 
@@ -59,12 +57,8 @@ namespace Umbraco.ModelsBuilder.Embedded.Configuration
             value = ConfigurationManager.AppSettings[Prefix + "ModelsDirectory"];
             if (!string.IsNullOrWhiteSpace(value))
             {
-                var root = _ioHelper.MapPath("~/");
-                if (root == null)
-                    throw new ConfigurationErrorsException("Could not determine root directory.");
-
                 // GetModelsDirectory will ensure that the path is safe
-                ModelsDirectory = GetModelsDirectory(root, value, AcceptUnsafeModelsDirectory);
+                ModelsDirectory = value;
             }
 
             // default: 0
@@ -81,7 +75,7 @@ namespace Umbraco.ModelsBuilder.Embedded.Configuration
         /// <summary>
         /// Initializes a new instance of the <see cref="ModelsBuilderConfig"/> class.
         /// </summary>
-        public ModelsBuilderConfig(IIOHelper ioHelper,
+        public ModelsBuilderConfig(
             bool enable = false,
             ModelsMode modelsMode = ModelsMode.Nothing,
             string modelsNamespace = null,
@@ -91,11 +85,10 @@ namespace Umbraco.ModelsBuilder.Embedded.Configuration
             bool acceptUnsafeModelsDirectory = false,
             int debugLevel = 0)
         {
-            _ioHelper = ioHelper ?? throw new ArgumentNullException(nameof(ioHelper));
             Enable = enable;
             _modelsMode = modelsMode;
 
-            ModelsNamespace = string.IsNullOrWhiteSpace(modelsNamespace) ? DefaultModelsNamespace : modelsNamespace;
+            ModelsNamespace = string.IsNullOrWhiteSpace(modelsNamespace) ? Constants.ModelsBuilder.DefaultModelsNamespace : modelsNamespace;
             EnableFactory = enableFactory;
             _flagOutOfDateModels = flagOutOfDateModels;
             ModelsDirectory = string.IsNullOrWhiteSpace(modelsDirectory) ? DefaultModelsDirectory : modelsDirectory;
@@ -103,36 +96,7 @@ namespace Umbraco.ModelsBuilder.Embedded.Configuration
             DebugLevel = debugLevel;
         }
 
-        // internal for tests
-        internal static string GetModelsDirectory(string root, string config, bool acceptUnsafe)
-        {
-            // making sure it is safe, ie under the website root,
-            // unless AcceptUnsafeModelsDirectory and then everything is OK.
 
-            if (!Path.IsPathRooted(root))
-                throw new ConfigurationErrorsException($"Root is not rooted \"{root}\".");
-
-            if (config.StartsWith("~/"))
-            {
-                var dir = Path.Combine(root, config.TrimStart("~/"));
-
-                // sanitize - GetFullPath will take care of any relative
-                // segments in path, eg '../../foo.tmp' - it may throw a SecurityException
-                // if the combined path reaches illegal parts of the filesystem
-                dir = Path.GetFullPath(dir);
-                root = Path.GetFullPath(root);
-
-                if (!dir.StartsWith(root) && !acceptUnsafe)
-                    throw new ConfigurationErrorsException($"Invalid models directory \"{config}\".");
-
-                return dir;
-            }
-
-            if (acceptUnsafe)
-                return Path.GetFullPath(config);
-
-            throw new ConfigurationErrorsException($"Invalid models directory \"{config}\".");
-        }
 
         /// <summary>
         /// Gets a value indicating whether the whole models experience is enabled.
@@ -174,8 +138,13 @@ namespace Umbraco.ModelsBuilder.Embedded.Configuration
         {
             get
             {
-                var section = (CompilationSection)ConfigurationManager.GetSection("system.web/compilation");
-                return section != null && section.Debug;
+                if (ConfigurationManager.GetSection("system.web/compilation") is ConfigurationSection section &&
+                    bool.TryParse(section.ElementInformation.Properties["debug"].Value.ToString(), out var isDebug))
+                {
+                    return isDebug;
+                }
+
+                return false;
             }
         }
 

src/Umbraco.Configuration/Legacy/NuCacheSettings.cs

@@ -0,0 +1,14 @@
+using System.Configuration;
+using Umbraco.Core.Configuration;
+
+namespace Umbraco.Configuration.Legacy
+{
+    public class NuCacheSettings : INuCacheSettings
+    {
+        public NuCacheSettings()
+        {
+            BTreeBlockSize = ConfigurationManager.AppSettings["Umbraco.Web.PublishedCache.NuCache.BTree.BlockSize"];
+        }
+        public string BTreeBlockSize { get; }
+    }
+}

src/Umbraco.Configuration/Legacy/RequestHandlerSettings.cs

@@ -0,0 +1,15 @@
+using System.Collections.Generic;
+using System.Linq;
+using Umbraco.Core;
+using Umbraco.Core.Configuration.UmbracoSettings;
+
+namespace Umbraco.Configuration.Implementations
+{
+    internal class RequestHandlerSettings : ConfigurationManagerConfigBase, IRequestHandlerSettings
+    {
+        public bool AddTrailingSlash  => UmbracoSettingsSection?.RequestHandler?.AddTrailingSlash ?? true;
+        public bool ConvertUrlsToAscii  => UmbracoSettingsSection?.RequestHandler?.UrlReplacing?.ConvertUrlsToAscii.InvariantEquals("true") ?? false;
+        public bool TryConvertUrlsToAscii  => UmbracoSettingsSection?.RequestHandler?.UrlReplacing?.ConvertUrlsToAscii.InvariantEquals("try") ?? false;
+        public IEnumerable<IChar> CharCollection => UmbracoSettingsSection?.RequestHandler?.UrlReplacing?.CharCollection ?? Enumerable.Empty<IChar>();
+    }
+}

src/Umbraco.Configuration/Legacy/RuntimeSettings.cs

@@ -0,0 +1,29 @@
+using System.Configuration;
+using Umbraco.Core.Configuration;
+
+namespace Umbraco.Configuration.Legacy
+{
+    public class RuntimeSettings : IRuntimeSettings
+    {
+        public RuntimeSettings()
+        {
+            if (ConfigurationManager.GetSection("system.web/httpRuntime") is ConfigurationSection section)
+            {
+                var maxRequestLengthProperty = section.ElementInformation.Properties["maxRequestLength"];
+                if (maxRequestLengthProperty != null && maxRequestLengthProperty.Value is int requestLength)
+                {
+                    MaxRequestLength = requestLength;
+                }
+
+                var maxQueryStringProperty = section.ElementInformation.Properties["maxQueryStringLength"];
+                if (maxQueryStringProperty != null && maxQueryStringProperty.Value is int maxQueryStringLength)
+                {
+                    MaxQueryStringLength = maxQueryStringLength;
+                }
+            }
+        }
+        public int? MaxQueryStringLength { get; }
+        public int? MaxRequestLength { get; }
+
+    }
+}

src/Umbraco.Configuration/Legacy/SecuritySettings.cs

@@ -0,0 +1,14 @@
+using Umbraco.Core.Configuration.UmbracoSettings;
+
+namespace Umbraco.Configuration.Implementations
+{
+    internal class SecuritySettings : ConfigurationManagerConfigBase, ISecuritySettings
+    {
+        public bool KeepUserLoggedIn => UmbracoSettingsSection.Security.KeepUserLoggedIn;
+        public bool HideDisabledUsersInBackoffice => UmbracoSettingsSection.Security.HideDisabledUsersInBackoffice;
+        public bool AllowPasswordReset => UmbracoSettingsSection.Security.AllowPasswordReset;
+        public string AuthCookieName => UmbracoSettingsSection.Security.AuthCookieName;
+        public string AuthCookieDomain => UmbracoSettingsSection.Security.AuthCookieDomain;
+        public bool UsernameIsEmail => UmbracoSettingsSection.Security.UsernameIsEmail;
+    }
+}

src/Umbraco.Configuration/Legacy/TourSettings.cs

@@ -0,0 +1,9 @@
+using Umbraco.Core.Configuration.UmbracoSettings;
+
+namespace Umbraco.Configuration.Implementations
+{
+    internal class TourSettings : ConfigurationManagerConfigBase, ITourSettings
+    {
+        public bool EnableTours => UmbracoSettingsSection.BackOffice.Tours.EnableTours;
+    }
+}

src/Umbraco.Configuration/Legacy/TypeFinderSettings.cs

@@ -0,0 +1,17 @@
+using System.Configuration;
+using Umbraco.Core;
+using Umbraco.Core.Configuration;
+
+namespace Umbraco.Configuration.Legacy
+{
+    public class TypeFinderSettings : ITypeFinderSettings
+    {
+        public TypeFinderSettings()
+        {
+            AssembliesAcceptingLoadExceptions = ConfigurationManager.AppSettings[
+                Constants.AppSettings.AssembliesAcceptingLoadExceptions];
+        }
+
+        public string AssembliesAcceptingLoadExceptions { get; }
+    }
+}

src/Umbraco.Configuration/Legacy/UserPasswordConfigurationSettings.cs

@@ -0,0 +1,15 @@
+using Umbraco.Core.Configuration;
+namespace Umbraco.Configuration.Implementations
+{
+    internal class UserPasswordConfigurationSettings : ConfigurationManagerConfigBase, IUserPasswordConfiguration
+    {
+        public int RequiredLength => UmbracoSettingsSection.Security.UserPasswordConfiguration.RequiredLength;
+        public bool RequireNonLetterOrDigit => UmbracoSettingsSection.Security.UserPasswordConfiguration.RequireNonLetterOrDigit;
+        public bool RequireDigit => UmbracoSettingsSection.Security.UserPasswordConfiguration.RequireDigit;
+        public bool RequireLowercase=> UmbracoSettingsSection.Security.UserPasswordConfiguration.RequireLowercase;
+        public bool RequireUppercase=> UmbracoSettingsSection.Security.UserPasswordConfiguration.RequireUppercase;
+        public bool UseLegacyEncoding=> UmbracoSettingsSection.Security.UserPasswordConfiguration.UseLegacyEncoding;
+        public string HashAlgorithmType=> UmbracoSettingsSection.Security.UserPasswordConfiguration.HashAlgorithmType;
+        public int MaxFailedAccessAttemptsBeforeLockout => UmbracoSettingsSection.Security.UserPasswordConfiguration.MaxFailedAccessAttemptsBeforeLockout;
+    }
+}

src/Umbraco.Configuration/Legacy/WebRoutingSettings.cs

@@ -0,0 +1,16 @@
+using Umbraco.Core.Configuration.UmbracoSettings;
+
+namespace Umbraco.Configuration.Implementations
+{
+    internal class WebRoutingSettings : ConfigurationManagerConfigBase, IWebRoutingSettings
+    {
+        public bool TrySkipIisCustomErrors => UmbracoSettingsSection?.WebRouting?.TrySkipIisCustomErrors ?? false;
+        public bool InternalRedirectPreservesTemplate => UmbracoSettingsSection?.WebRouting?.InternalRedirectPreservesTemplate ?? false;
+        public bool DisableAlternativeTemplates => UmbracoSettingsSection?.WebRouting?.DisableAlternativeTemplates ?? false;
+        public bool ValidateAlternativeTemplates => UmbracoSettingsSection?.WebRouting?.ValidateAlternativeTemplates ?? false;
+        public bool DisableFindContentByIdPath => UmbracoSettingsSection?.WebRouting?.DisableFindContentByIdPath ?? false;
+        public bool DisableRedirectUrlTracking => UmbracoSettingsSection?.WebRouting?.DisableRedirectUrlTracking ?? false;
+        public string UrlProviderMode => UmbracoSettingsSection?.WebRouting?.UrlProviderMode ?? "Auto";
+        public string UmbracoApplicationUrl => UmbracoSettingsSection?.WebRouting?.UmbracoApplicationUrl;
+    }
+}

src/Umbraco.Configuration/Models/ActiveDirectorySettings.cs

@@ -0,0 +1,19 @@
+using Microsoft.Extensions.Configuration;
+using Umbraco.Core;
+using Umbraco.Core.Configuration;
+
+namespace Umbraco.Configuration.Models
+{
+    internal class ActiveDirectorySettings : IActiveDirectorySettings
+    {
+        private const string Prefix = Constants.Configuration.ConfigPrefix + "ActiveDirectory:";
+        private readonly IConfiguration _configuration;
+
+        public ActiveDirectorySettings(IConfiguration configuration)
+        {
+            _configuration = configuration;
+        }
+
+        public string ActiveDirectoryDomain => _configuration.GetValue<string>(Prefix+"Domain");
+    }
+}

src/Umbraco.Configuration/Models/ConnectionStrings.cs

@@ -0,0 +1,59 @@
+using System;
+using System.Data.Common;
+using Microsoft.Extensions.Configuration;
+using Umbraco.Core;
+using Umbraco.Core.Configuration;
+
+namespace Umbraco.Configuration.Models
+{
+    public class ConnectionStrings : IConnectionStrings
+    {
+        private readonly IConfiguration _configuration;
+
+        public ConnectionStrings(IConfiguration configuration)
+        {
+            _configuration = configuration;
+        }
+
+        public ConfigConnectionString this[string key]
+        {
+            get
+            {
+                var connectionString = _configuration.GetConnectionString(key);
+                var provider = ParseProvider(connectionString);
+                return new ConfigConnectionString(connectionString, provider, key);
+            }
+            set => throw new NotImplementedException();
+        }
+
+        private string ParseProvider(string connectionString)
+        {
+            if (string.IsNullOrEmpty(connectionString))
+            {
+                return null;
+            }
+
+            var builder = new DbConnectionStringBuilder();
+
+            builder.ConnectionString = connectionString;
+
+            if (builder.TryGetValue("Data Source", out var ds) && ds is string dataSource)
+            {
+                if (dataSource.EndsWith(".sdf"))
+                {
+                    return Constants.DbProviderNames.SqlCe;
+                }
+            }
+
+            if (builder.TryGetValue("Server", out var s) && s is string server && builder.TryGetValue("Database", out var db) && db is string database)
+            {
+                if (!string.IsNullOrEmpty(server) && !string.IsNullOrEmpty(database))
+                {
+                    return Constants.DbProviderNames.SqlServer;
+                }
+            }
+
+            throw new ArgumentException("Cannot determine provider name from connection string", nameof(connectionString));
+        }
+    }
+}

src/Umbraco.Configuration/Models/ContentSettings.cs

@@ -0,0 +1,115 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using Microsoft.Extensions.Configuration;
+using Umbraco.Core;
+using Umbraco.Core.Configuration.UmbracoSettings;
+using Umbraco.Core.Macros;
+
+namespace Umbraco.Configuration.Models
+{
+    internal class ContentSettings : IContentSettings
+    {
+        private const string Prefix = Constants.Configuration.ConfigPrefix + "Content:";
+        private const string NotificationsPrefix = Prefix + "Notifications:";
+        private const string ImagingPrefix = Prefix + "Imaging:";
+        private const string DefaultPreviewBadge =
+            @"<div id=""umbracoPreviewBadge"" class=""umbraco-preview-badge""><span class=""umbraco-preview-badge__header"">Preview mode</span><a href=""{0}/preview/end?redir={1}"" class=""umbraco-preview-badge__end""><svg viewBox=""0 0 100 100"" xmlns=""http://www.w3.org/2000/svg""><title>Click to end</title><path d=""M5273.1 2400.1v-2c0-2.8-5-4-9.7-4s-9.7 1.3-9.7 4v2a7 7 0 002 4.9l5 4.9c.3.3.4.6.4 1v6.4c0 .4.2.7.6.8l2.9.9c.5.1 1-.2 1-.8v-7.2c0-.4.2-.7.4-1l5.1-5a7 7 0 002-4.9zm-9.7-.1c-4.8 0-7.4-1.3-7.5-1.8.1-.5 2.7-1.8 7.5-1.8s7.3 1.3 7.5 1.8c-.2.5-2.7 1.8-7.5 1.8z""/><path d=""M5268.4 2410.3c-.6 0-1 .4-1 1s.4 1 1 1h4.3c.6 0 1-.4 1-1s-.4-1-1-1h-4.3zM5272.7 2413.7h-4.3c-.6 0-1 .4-1 1s.4 1 1 1h4.3c.6 0 1-.4 1-1s-.4-1-1-1zM5272.7 2417h-4.3c-.6 0-1 .4-1 1s.4 1 1 1h4.3c.6 0 1-.4 1-1 0-.5-.4-1-1-1z""/><path d=""M78.2 13l-8.7 11.7a32.5 32.5 0 11-51.9 25.8c0-10.3 4.7-19.7 12.9-25.8L21.8 13a47 47 0 1056.4 0z""/><path d=""M42.7 2.5h14.6v49.4H42.7z""/></svg></a></div><style type=""text/css"">.umbraco-preview-badge {{position: absolute;top: 1em;right: 1em;display: inline-flex;background: #1b264f;color: #fff;padding: 1em;font-size: 12px;z-index: 99999999;justify-content: center;align-items: center;box-shadow: 0 10px 50px rgba(0, 0, 0, .1), 0 6px 20px rgba(0, 0, 0, .16);line-height: 1;}}.umbraco-preview-badge__header {{font-weight: bold;}}.umbraco-preview-badge__end {{width: 3em;padding: 1em;margin: -1em -1em -1em 2em;display: flex;flex-shrink: 0;align-items: center;align-self: stretch;}}.umbraco-preview-badge__end:hover,.umbraco-preview-badge__end:focus {{background: #f5c1bc;}}.umbraco-preview-badge__end svg {{fill: #fff;width:1em;}}</style>";
+
+        private static readonly ImagingAutoFillUploadField[] DefaultImagingAutoFillUploadField =
+        {
+            new ImagingAutoFillUploadField
+            {
+                Alias = "umbracoFile"
+            }
+        };
+
+        private readonly IConfiguration _configuration;
+
+        public ContentSettings(IConfiguration configuration)
+        {
+            _configuration = configuration;
+        }
+
+        public string NotificationEmailAddress =>
+            _configuration.GetValue<string>(NotificationsPrefix+"Email");
+
+        public bool DisableHtmlEmail =>
+            _configuration.GetValue(NotificationsPrefix+"DisableHtmlEmail", false);
+
+        public IEnumerable<string> ImageFileTypes => _configuration.GetValue(
+            ImagingPrefix+"ImageFileTypes", new[] { "jpeg", "jpg", "gif", "bmp", "png", "tiff", "tif" });
+
+        public IEnumerable<IImagingAutoFillUploadField> ImageAutoFillProperties =>
+            _configuration.GetValue(ImagingPrefix+"AutoFillImageProperties",
+                DefaultImagingAutoFillUploadField);
+
+
+        public bool ResolveUrlsFromTextString =>
+            _configuration.GetValue(Prefix+"ResolveUrlsFromTextString", false);
+
+        public IEnumerable<IContentErrorPage> Error404Collection => _configuration
+            .GetSection(Prefix+"Errors:Error404")
+            .GetChildren()
+            .Select(x => new ContentErrorPage(x));
+
+        public string PreviewBadge => _configuration.GetValue(Prefix+"PreviewBadge", DefaultPreviewBadge);
+
+        public MacroErrorBehaviour MacroErrorBehaviour =>
+            _configuration.GetValue(Prefix+"MacroErrors", MacroErrorBehaviour.Inline);
+
+        public IEnumerable<string> DisallowedUploadFiles => _configuration.GetValue(
+            Prefix+"DisallowedUploadFiles",
+            new[] { "ashx", "aspx", "ascx", "config", "cshtml", "vbhtml", "asmx", "air", "axd" });
+
+        public IEnumerable<string> AllowedUploadFiles =>
+            _configuration.GetValue(Prefix+"AllowedUploadFiles", Array.Empty<string>());
+
+        public bool ShowDeprecatedPropertyEditors =>
+            _configuration.GetValue(Prefix+"ShowDeprecatedPropertyEditors", false);
+
+        public string LoginBackgroundImage =>
+            _configuration.GetValue(Prefix+"LoginBackgroundImage", string.Empty);
+
+        private class ContentErrorPage : IContentErrorPage
+        {
+            public ContentErrorPage(IConfigurationSection configurationSection)
+            {
+                Culture = configurationSection.Key;
+
+                var value = configurationSection.Value;
+
+                if (int.TryParse(value, out var contentId))
+                {
+                    HasContentId = true;
+                    ContentId = contentId;
+                }
+                else if (Guid.TryParse(value, out var contentKey))
+                {
+                    HasContentKey = true;
+                    ContentKey = contentKey;
+                }
+                else
+                {
+                    ContentXPath = value;
+                }
+            }
+
+            public int ContentId { get; }
+            public Guid ContentKey { get; }
+            public string ContentXPath { get; }
+            public bool HasContentId { get; }
+            public bool HasContentKey { get; }
+            public string Culture { get; set; }
+        }
+
+        private class ImagingAutoFillUploadField : IImagingAutoFillUploadField
+        {
+            public string Alias { get; set; }
+            public string WidthFieldAlias { get; set; }
+            public string HeightFieldAlias { get; set; }
+            public string LengthFieldAlias { get; set; }
+            public string ExtensionFieldAlias { get; set; }
+        }
+    }
+}

src/Umbraco.Configuration/Models/CoreDebugSettings.cs

@@ -0,0 +1,23 @@
+using Microsoft.Extensions.Configuration;
+using Umbraco.Core;
+using Umbraco.Core.Configuration;
+
+namespace Umbraco.Configuration.Models
+{
+    internal class CoreDebugSettings : ICoreDebugSettings
+    {
+        private const string Prefix = Constants.Configuration.ConfigPrefix + "Core:Debug:";
+        private readonly IConfiguration _configuration;
+
+        public CoreDebugSettings(IConfiguration configuration)
+        {
+            _configuration = configuration;
+        }
+
+        public bool LogUncompletedScopes =>
+            _configuration.GetValue(Prefix+"LogUncompletedScopes", false);
+
+        public bool DumpOnTimeoutThreadAbort =>
+            _configuration.GetValue(Prefix+"DumpOnTimeoutThreadAbort", false);
+    }
+}

src/Umbraco.Configuration/Models/ExceptionFilterSettings.cs

@@ -0,0 +1,19 @@
+using Microsoft.Extensions.Configuration;
+using Umbraco.Core;
+using Umbraco.Core.Configuration;
+
+namespace Umbraco.Configuration.Models
+{
+    internal class ExceptionFilterSettings : IExceptionFilterSettings
+    {
+        private const string Prefix = Constants.Configuration.ConfigPrefix + "ExceptionFilter:";
+        private readonly IConfiguration _configuration;
+
+        public ExceptionFilterSettings(IConfiguration configuration)
+        {
+            _configuration = configuration;
+        }
+
+        public bool Disabled => _configuration.GetValue(Prefix+"Disabled", false);
+    }
+}

src/Umbraco.Configuration/Models/GlobalSettings.cs

@@ -0,0 +1,95 @@
+using System;
+using System.Linq;
+using Microsoft.Extensions.Configuration;
+using Umbraco.Core;
+using Umbraco.Core.Configuration;
+
+namespace Umbraco.Configuration.Models
+{
+    /// <summary>
+    ///     The GlobalSettings Class contains general settings information for the entire Umbraco instance based on information
+    ///     from  web.config appsettings
+    /// </summary>
+    internal class GlobalSettings : IGlobalSettings
+    {
+        private const string Prefix = Constants.Configuration.ConfigGlobalPrefix;
+
+        internal const string
+            StaticReservedPaths = "~/app_plugins/,~/install/,~/mini-profiler-resources/,"; //must end with a comma!
+
+        internal const string
+            StaticReservedUrls = "~/config/splashes/noNodes.aspx,~/.well-known,"; //must end with a comma!
+
+        private readonly IConfiguration _configuration;
+
+        public GlobalSettings(IConfiguration configuration)
+        {
+            _configuration = configuration;
+        }
+
+        public string ReservedUrls => _configuration.GetValue(Prefix + "ReservedUrls", StaticReservedUrls);
+        public string ReservedPaths => _configuration.GetValue(Prefix + "ReservedPaths", StaticReservedPaths);
+
+        // TODO: https://github.com/umbraco/Umbraco-CMS/issues/4238 - stop having version in web.config appSettings
+        public string ConfigurationStatus
+        {
+            get => _configuration.GetValue<string>(Prefix + "ConfigurationStatus");
+            set => throw new NotImplementedException("We should remove this and only use the value from database");
+        }
+
+        public int TimeOutInMinutes => _configuration.GetValue(Prefix + "TimeOutInMinutes", 20);
+        public string DefaultUILanguage => _configuration.GetValue(Prefix + "TimeOutInMinutes", "en-US");
+
+        public bool HideTopLevelNodeFromPath =>
+            _configuration.GetValue(Prefix + "HideTopLevelNodeFromPath", false);
+
+        public bool UseHttps => _configuration.GetValue(Prefix + "UseHttps", false);
+        public int VersionCheckPeriod => _configuration.GetValue(Prefix + "VersionCheckPeriod", 7);
+        public string UmbracoPath => _configuration.GetValue(Prefix + "UmbracoPath", "~/umbraco");
+        public string UmbracoCssPath => _configuration.GetValue(Prefix + "UmbracoCssPath", "~/css");
+
+        public string UmbracoScriptsPath =>
+            _configuration.GetValue(Prefix + "UmbracoScriptsPath", "~/scripts");
+
+        public string UmbracoMediaPath => _configuration.GetValue(Prefix + "UmbracoMediaPath", "~/media");
+
+        public bool InstallMissingDatabase =>
+            _configuration.GetValue(Prefix + "InstallMissingDatabase", false);
+
+        public bool InstallEmptyDatabase => _configuration.GetValue(Prefix + "InstallEmptyDatabase", false);
+
+        public bool DisableElectionForSingleServer =>
+            _configuration.GetValue(Prefix + "DisableElectionForSingleServer", false);
+
+        public string RegisterType => _configuration.GetValue(Prefix + "RegisterType", string.Empty);
+
+        public string DatabaseFactoryServerVersion =>
+            _configuration.GetValue(Prefix + "DatabaseFactoryServerVersion", string.Empty);
+
+        public string MainDomLock => _configuration.GetValue(Prefix + "MainDomLock", string.Empty);
+
+        public string NoNodesViewPath =>
+            _configuration.GetValue(Prefix + "NoNodesViewPath", "~/config/splashes/NoNodes.cshtml");
+
+        public bool IsSmtpServerConfigured =>
+            _configuration.GetSection(Constants.Configuration.ConfigPrefix + "Smtp")?.GetChildren().Any() ?? false;
+
+        public ISmtpSettings SmtpSettings =>
+            new SmtpSettingsImpl(_configuration.GetSection(Constants.Configuration.ConfigPrefix + "Smtp"));
+
+        private class SmtpSettingsImpl : ISmtpSettings
+        {
+            private readonly IConfigurationSection _configurationSection;
+
+            public SmtpSettingsImpl(IConfigurationSection configurationSection)
+            {
+                _configurationSection = configurationSection;
+            }
+
+            public string From => _configurationSection.GetValue<string>("From");
+            public string Host => _configurationSection.GetValue<string>("Host");
+            public int Port => _configurationSection.GetValue<int>("Port");
+            public string PickupDirectoryLocation => _configurationSection.GetValue<string>("PickupDirectoryLocation");
+        }
+    }
+}

src/Umbraco.Configuration/Models/HealthChecksSettingsSettings.cs

@@ -0,0 +1,105 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using Microsoft.Extensions.Configuration;
+using Umbraco.Core;
+using Umbraco.Core.Configuration.HealthChecks;
+
+namespace Umbraco.Configuration.Models
+{
+    internal class HealthChecksSettings : IHealthChecksSettings
+    {
+        private const string Prefix = Constants.Configuration.ConfigPrefix + "HealthChecks:";
+        private readonly IConfiguration _configuration;
+
+        public HealthChecksSettings(IConfiguration configuration)
+        {
+            _configuration = configuration;
+        }
+
+        public IEnumerable<IDisabledHealthCheck> DisabledChecks => _configuration
+            .GetSection(Prefix+"DisabledChecks")
+            .GetChildren()
+            .Select(
+                x => new DisabledHealthCheck
+                {
+                    Id = x.GetValue<Guid>("Id"),
+                    DisabledOn = x.GetValue<DateTime>("DisabledOn"),
+                    DisabledBy = x.GetValue<int>("DisabledBy")
+                });
+
+        public IHealthCheckNotificationSettings NotificationSettings =>
+            new HealthCheckNotificationSettings(
+                _configuration.GetSection(Prefix+"NotificationSettings"));
+
+        private class DisabledHealthCheck : IDisabledHealthCheck
+        {
+            public Guid Id { get; set; }
+            public DateTime DisabledOn { get; set; }
+            public int DisabledBy { get; set; }
+        }
+
+        private class HealthCheckNotificationSettings : IHealthCheckNotificationSettings
+        {
+            private readonly IConfigurationSection _configurationSection;
+
+            public HealthCheckNotificationSettings(IConfigurationSection configurationSection)
+            {
+                _configurationSection = configurationSection;
+            }
+
+            public bool Enabled => _configurationSection.GetValue("Enabled", false);
+            public string FirstRunTime => _configurationSection.GetValue<string>("FirstRunTime");
+            public int PeriodInHours => _configurationSection.GetValue("PeriodInHours", 24);
+
+            public IReadOnlyDictionary<string, INotificationMethod> NotificationMethods => _configurationSection
+                .GetSection("NotificationMethods")
+                .GetChildren()
+                .ToDictionary(x => x.Key, x => (INotificationMethod) new NotificationMethod(x.Key, x));
+
+            public IEnumerable<IDisabledHealthCheck> DisabledChecks => _configurationSection
+                .GetSection("DisabledChecks").GetChildren().Select(
+                    x => new DisabledHealthCheck
+                    {
+                        Id = x.GetValue<Guid>("Id"),
+                        DisabledOn = x.GetValue<DateTime>("DisabledOn"),
+                        DisabledBy = x.GetValue<int>("DisabledBy")
+                    });
+        }
+
+        private class NotificationMethod : INotificationMethod
+        {
+            private readonly IConfigurationSection _configurationSection;
+
+            public NotificationMethod(string alias, IConfigurationSection configurationSection)
+            {
+                Alias = alias;
+                _configurationSection = configurationSection;
+            }
+
+            public string Alias { get; }
+            public bool Enabled => _configurationSection.GetValue("Enabled", false);
+
+            public HealthCheckNotificationVerbosity Verbosity =>
+                _configurationSection.GetValue("Verbosity", HealthCheckNotificationVerbosity.Summary);
+
+            public bool FailureOnly => _configurationSection.GetValue("FailureOnly", true);
+
+            public IReadOnlyDictionary<string, INotificationMethodSettings> Settings => _configurationSection
+                .GetSection("Settings").GetChildren().ToDictionary(x => x.Key,
+                    x => (INotificationMethodSettings) new NotificationMethodSettings(x.Key, x.Value));
+        }
+
+        private class NotificationMethodSettings : INotificationMethodSettings
+        {
+            public NotificationMethodSettings(string key, string value)
+            {
+                Key = key;
+                Value = value;
+            }
+
+            public string Key { get; }
+            public string Value { get; }
+        }
+    }
+}

src/Umbraco.Configuration/Models/HostingSettings.cs

@@ -0,0 +1,29 @@
+using Microsoft.Extensions.Configuration;
+using Umbraco.Core;
+using Umbraco.Core.Configuration;
+
+namespace Umbraco.Configuration.Models
+{
+    internal class HostingSettings : IHostingSettings
+    {
+        private const string Prefix = Constants.Configuration.ConfigPrefix + "Hosting:";
+        private readonly IConfiguration _configuration;
+
+        public HostingSettings(IConfiguration configuration)
+        {
+            _configuration = configuration;
+        }
+
+        /// <inheritdoc />
+        public LocalTempStorage LocalTempStorageLocation =>
+            _configuration.GetValue(Prefix+"LocalTempStorage", LocalTempStorage.Default);
+
+        public string ApplicationVirtualPath => null;
+
+        /// <summary>
+        ///     Gets a value indicating whether umbraco is running in [debug mode].
+        /// </summary>
+        /// <value><c>true</c> if [debug mode]; otherwise, <c>false</c>.</value>
+        public bool DebugMode => _configuration.GetValue(Prefix+"Debug", false);
+    }
+}

src/Umbraco.Configuration/Models/ImagingSettings.cs

@@ -0,0 +1,26 @@
+using Microsoft.Extensions.Configuration;
+using Umbraco.Core;
+using Umbraco.Core.Configuration;
+
+namespace Umbraco.Configuration.Models
+{
+    internal class ImagingSettings : IImagingSettings
+    {
+        private const string Prefix = Constants.Configuration.ConfigPrefix + "Imaging:";
+        private const string CachePrefix = Prefix + "Cache:";
+        private const string ResizePrefix = Prefix + "Resize:";
+        private readonly IConfiguration _configuration;
+
+        public ImagingSettings(IConfiguration configuration)
+        {
+            _configuration = configuration;
+        }
+
+        public int MaxBrowserCacheDays => _configuration.GetValue(CachePrefix + "MaxBrowserCacheDays", 7);
+        public int MaxCacheDays => _configuration.GetValue(CachePrefix + "MaxCacheDays", 365);
+        public uint CachedNameLength => _configuration.GetValue(CachePrefix + "CachedNameLength", (uint) 8);
+        public string CacheFolder => _configuration.GetValue(CachePrefix + "Folder", "../App_Data/Cache");
+        public int MaxResizeWidth => _configuration.GetValue(ResizePrefix + "MaxWidth", 5000);
+        public int MaxResizeHeight => _configuration.GetValue(ResizePrefix + "MaxHeight", 5000);
+    }
+}

src/Umbraco.Configuration/Models/IndexCreatorSettings.cs

@@ -0,0 +1,20 @@
+using Microsoft.Extensions.Configuration;
+using Umbraco.Core;
+using Umbraco.Core.Configuration;
+
+namespace Umbraco.Configuration.Models
+{
+    internal class IndexCreatorSettings : IIndexCreatorSettings
+    {
+        private const string Prefix = Constants.Configuration.ConfigPrefix + "Examine:";
+        private readonly IConfiguration _configuration;
+
+        public IndexCreatorSettings(IConfiguration configuration)
+        {
+            _configuration = configuration;
+        }
+
+        public string LuceneDirectoryFactory =>
+            _configuration.GetValue<string>(Prefix + "LuceneDirectoryFactory");
+    }
+}

src/Umbraco.Configuration/Models/KeepAliveSettings.cs

@@ -0,0 +1,23 @@
+using Microsoft.Extensions.Configuration;
+using Umbraco.Core;
+using Umbraco.Core.Configuration.UmbracoSettings;
+
+namespace Umbraco.Configuration.Models
+{
+    internal class KeepAliveSettings : IKeepAliveSettings
+    {
+        private const string Prefix = Constants.Configuration.ConfigPrefix + "KeepAlive:";
+        private readonly IConfiguration _configuration;
+
+        public KeepAliveSettings(IConfiguration configuration)
+        {
+            _configuration = configuration;
+        }
+
+        public bool DisableKeepAliveTask =>
+            _configuration.GetValue(Prefix + "DisableKeepAliveTask", false);
+
+        public string KeepAlivePingUrl => _configuration.GetValue(Prefix + "KeepAlivePingUrl",
+            "{umbracoApplicationUrl}/api/keepalive/ping");
+    }
+}

src/Umbraco.Configuration/Models/LoggingSettings.cs

@@ -0,0 +1,19 @@
+using Microsoft.Extensions.Configuration;
+using Umbraco.Core;
+using Umbraco.Core.Configuration.UmbracoSettings;
+
+namespace Umbraco.Configuration.Models
+{
+    internal class LoggingSettings : ILoggingSettings
+    {
+        private const string Prefix = Constants.Configuration.ConfigPrefix + "Logging:";
+        private readonly IConfiguration _configuration;
+
+        public LoggingSettings(IConfiguration configuration)
+        {
+            _configuration = configuration;
+        }
+
+        public int MaxLogAge => _configuration.GetValue(Prefix + "MaxLogAge", -1);
+    }
+}

src/Umbraco.Configuration/Models/MemberPasswordConfigurationSettings.cs

@@ -0,0 +1,38 @@
+using Microsoft.Extensions.Configuration;
+using Umbraco.Core;
+using Umbraco.Core.Configuration;
+
+namespace Umbraco.Configuration.Models
+{
+    internal class MemberPasswordConfigurationSettings : IMemberPasswordConfiguration
+    {
+        private const string Prefix = Constants.Configuration.ConfigSecurityPrefix + "MemberPassword:";
+        private readonly IConfiguration _configuration;
+
+        public MemberPasswordConfigurationSettings(IConfiguration configuration)
+        {
+            _configuration = configuration;
+        }
+
+        public int RequiredLength =>
+            _configuration.GetValue(Prefix + "RequiredLength", 10);
+
+        public bool RequireNonLetterOrDigit =>
+            _configuration.GetValue(Prefix + "RequireNonLetterOrDigit", false);
+
+        public bool RequireDigit =>
+            _configuration.GetValue(Prefix + "RequireDigit", false);
+
+        public bool RequireLowercase =>
+            _configuration.GetValue(Prefix + "RequireLowercase", false);
+
+        public bool RequireUppercase =>
+            _configuration.GetValue(Prefix + "RequireUppercase", false);
+
+        public string HashAlgorithmType =>
+            _configuration.GetValue(Prefix + "HashAlgorithmType", "HMACSHA256");
+
+        public int MaxFailedAccessAttemptsBeforeLockout =>
+            _configuration.GetValue(Prefix + "MaxFailedAccessAttemptsBeforeLockout", 5);
+    }
+}

src/Umbraco.Configuration/Models/ModelsBuilderConfig.cs

@@ -0,0 +1,86 @@
+using Microsoft.Extensions.Configuration;
+using Umbraco.Core;
+using Umbraco.Core.Configuration;
+
+namespace Umbraco.Configuration.Models
+{
+    /// <summary>
+    ///     Represents the models builder configuration.
+    /// </summary>
+    internal class ModelsBuilderConfig : IModelsBuilderConfig
+    {
+        private const string Prefix = Constants.Configuration.ConfigModelsBuilderPrefix;
+        private readonly IConfiguration _configuration;
+
+        /// <summary>
+        ///     Initializes a new instance of the <see cref="ModelsBuilderConfig" /> class.
+        /// </summary>
+        public ModelsBuilderConfig(IConfiguration configuration)
+        {
+            _configuration = configuration;
+        }
+
+        public string DefaultModelsDirectory => "~/App_Data/Models";
+
+        /// <summary>
+        ///     Gets a value indicating whether the whole models experience is enabled.
+        /// </summary>
+        /// <remarks>
+        ///     <para>If this is false then absolutely nothing happens.</para>
+        ///     <para>Default value is <c>false</c> which means that unless we have this setting, nothing happens.</para>
+        /// </remarks>
+        public bool Enable => _configuration.GetValue(Prefix+"Enable", false);
+
+        /// <summary>
+        ///     Gets the models mode.
+        /// </summary>
+        public ModelsMode ModelsMode =>
+            _configuration.GetValue(Prefix+"ModelsMode", ModelsMode.Nothing);
+
+        /// <summary>
+        ///     Gets the models namespace.
+        /// </summary>
+        /// <remarks>That value could be overriden by other (attribute in user's code...). Return default if no value was supplied.</remarks>
+        public string ModelsNamespace => _configuration.GetValue<string>(Prefix+"ModelsNamespace");
+
+        /// <summary>
+        ///     Gets a value indicating whether we should enable the models factory.
+        /// </summary>
+        /// <remarks>Default value is <c>true</c> because no factory is enabled by default in Umbraco.</remarks>
+        public bool EnableFactory => _configuration.GetValue(Prefix+"EnableFactory", true);
+
+        /// <summary>
+        ///     Gets a value indicating whether we should flag out-of-date models.
+        /// </summary>
+        /// <remarks>
+        ///     Models become out-of-date when data types or content types are updated. When this
+        ///     setting is activated the ~/App_Data/Models/ood.txt file is then created. When models are
+        ///     generated through the dashboard, the files is cleared. Default value is <c>false</c>.
+        /// </remarks>
+        public bool FlagOutOfDateModels =>
+            _configuration.GetValue(Prefix+"FlagOutOfDateModels", false) && !ModelsMode.IsLive();
+
+        /// <summary>
+        ///     Gets the models directory.
+        /// </summary>
+        /// <remarks>Default is ~/App_Data/Models but that can be changed.</remarks>
+        public string ModelsDirectory =>
+            _configuration.GetValue(Prefix+"ModelsDirectory", "~/App_Data/Models");
+
+        /// <summary>
+        ///     Gets a value indicating whether to accept an unsafe value for ModelsDirectory.
+        /// </summary>
+        /// <remarks>
+        ///     An unsafe value is an absolute path, or a relative path pointing outside
+        ///     of the website root.
+        /// </remarks>
+        public bool AcceptUnsafeModelsDirectory =>
+            _configuration.GetValue(Prefix+"AcceptUnsafeModelsDirectory", false);
+
+        /// <summary>
+        ///     Gets a value indicating the debug log level.
+        /// </summary>
+        /// <remarks>0 means minimal (safe on live site), anything else means more and more details (maybe not safe).</remarks>
+        public int DebugLevel => _configuration.GetValue(Prefix+"DebugLevel", 0);
+    }
+}

src/Umbraco.Configuration/Models/NuCacheSettings.cs

@@ -0,0 +1,19 @@
+using Microsoft.Extensions.Configuration;
+using Umbraco.Core;
+using Umbraco.Core.Configuration;
+
+namespace Umbraco.Configuration.Models
+{
+    internal class NuCacheSettings : INuCacheSettings
+    {
+        private const string Prefix = Constants.Configuration.ConfigPrefix + "NuCache:";
+        private readonly IConfiguration _configuration;
+
+        public NuCacheSettings(IConfiguration configuration)
+        {
+            _configuration = configuration;
+        }
+
+        public string BTreeBlockSize => _configuration.GetValue<string>(Prefix+"BTreeBlockSize");
+    }
+}

src/Umbraco.Configuration/Models/RequestHandlerSettings.cs

@@ -0,0 +1,87 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using Microsoft.Extensions.Configuration;
+using Umbraco.Core;
+using Umbraco.Core.Configuration.UmbracoSettings;
+
+namespace Umbraco.Configuration.Models
+{
+    internal class RequestHandlerSettings : IRequestHandlerSettings
+    {
+        private const string Prefix = Constants.Configuration.ConfigPrefix + "RequestHandler:";
+        private static readonly CharItem[] DefaultCharCollection =
+        {
+            new CharItem { Char = " ", Replacement = "-" },
+            new CharItem { Char = "\"", Replacement = "" },
+            new CharItem { Char = "'", Replacement = "" },
+            new CharItem { Char = "%", Replacement = "" },
+            new CharItem { Char = ".", Replacement = "" },
+            new CharItem { Char = ";", Replacement = "" },
+            new CharItem { Char = "/", Replacement = "" },
+            new CharItem { Char = "\\", Replacement = "" },
+            new CharItem { Char = ":", Replacement = "" },
+            new CharItem { Char = "#", Replacement = "" },
+            new CharItem { Char = "+", Replacement = "plus" },
+            new CharItem { Char = "*", Replacement = "star" },
+            new CharItem { Char = "&", Replacement = "" },
+            new CharItem { Char = "?", Replacement = "" },
+            new CharItem { Char = "æ", Replacement = "ae" },
+            new CharItem { Char = "ä", Replacement = "ae" },
+            new CharItem { Char = "ø", Replacement = "oe" },
+            new CharItem { Char = "ö", Replacement = "oe" },
+            new CharItem { Char = "å", Replacement = "aa" },
+            new CharItem { Char = "ü", Replacement = "ue" },
+            new CharItem { Char = "ß", Replacement = "ss" },
+            new CharItem { Char = "|", Replacement = "-" },
+            new CharItem { Char = "<", Replacement = "" },
+            new CharItem { Char = ">", Replacement = "" }
+        };
+
+        private readonly IConfiguration _configuration;
+
+        public RequestHandlerSettings(IConfiguration configuration)
+        {
+            _configuration = configuration;
+        }
+
+        public bool AddTrailingSlash =>
+            _configuration.GetValue(Prefix+"AddTrailingSlash", true);
+
+        public bool ConvertUrlsToAscii => _configuration
+            .GetValue<string>(Prefix+"ConvertUrlsToAscii").InvariantEquals("true");
+
+        public bool TryConvertUrlsToAscii => _configuration
+            .GetValue<string>(Prefix+"ConvertUrlsToAscii").InvariantEquals("try");
+
+
+        //We need to special handle ":", as this character is special in keys
+        public IEnumerable<IChar> CharCollection
+        {
+            get
+            {
+                var collection = _configuration.GetSection(Prefix + "CharCollection").GetChildren()
+                    .Select(x => new CharItem()
+                    {
+                        Char = x.GetValue<string>("Char"),
+                        Replacement = x.GetValue<string>("Replacement"),
+                    }).ToArray();
+
+                if (collection.Any() || _configuration.GetSection("Prefix").GetChildren().Any(x =>
+                    x.Key.Equals("CharCollection", StringComparison.OrdinalIgnoreCase)))
+                {
+                    return collection;
+                }
+
+                return DefaultCharCollection;
+            }
+        }
+
+
+        public class CharItem : IChar
+        {
+            public string Char { get; set; }
+            public string Replacement { get; set; }
+        }
+    }
+}

src/Umbraco.Configuration/Models/RuntimeSettings.cs

@@ -0,0 +1,19 @@
+using Microsoft.Extensions.Configuration;
+using Umbraco.Core;
+using Umbraco.Core.Configuration;
+
+namespace Umbraco.Configuration.Models
+{
+    internal class RuntimeSettings : IRuntimeSettings
+    {
+        private const string Prefix = Constants.Configuration.ConfigPrefix + "Runtime:";
+        private readonly IConfiguration _configuration;
+        public RuntimeSettings(IConfiguration configuration)
+        {
+            _configuration = configuration;
+        }
+
+        public int? MaxQueryStringLength => _configuration.GetValue<int?>(Prefix+"MaxRequestLength");
+        public int? MaxRequestLength => _configuration.GetValue<int?>(Prefix+"MaxRequestLength");
+    }
+}

src/Umbraco.Configuration/Models/SecuritySettings.cs

@@ -0,0 +1,33 @@
+using Microsoft.Extensions.Configuration;
+using Umbraco.Core;
+using Umbraco.Core.Configuration.UmbracoSettings;
+
+namespace Umbraco.Configuration.Models
+{
+    internal class SecuritySettings : ISecuritySettings
+    {
+        private const string Prefix = Constants.Configuration.ConfigSecurityPrefix;
+        private readonly IConfiguration _configuration;
+
+        public SecuritySettings(IConfiguration configuration)
+        {
+            _configuration = configuration;
+        }
+
+        public bool KeepUserLoggedIn => _configuration.GetValue(Prefix + "KeepUserLoggedIn", true);
+
+        public bool HideDisabledUsersInBackoffice =>
+            _configuration.GetValue(Prefix + "HideDisabledUsersInBackoffice", false);
+
+        public bool AllowPasswordReset =>
+            _configuration.GetValue(Prefix + "AllowPasswordResetAllowPasswordReset", true);
+
+        public string AuthCookieName =>
+            _configuration.GetValue(Prefix + "AuthCookieName", "UMB_UCONTEXT");
+
+        public string AuthCookieDomain =>
+            _configuration.GetValue<string>(Prefix + "AuthCookieDomain");
+
+        public bool UsernameIsEmail => _configuration.GetValue(Prefix + "UsernameIsEmail", true);
+    }
+}

src/Umbraco.Configuration/Models/TourSettings.cs

@@ -0,0 +1,21 @@
+using Microsoft.Extensions.Configuration;
+using Umbraco.Core;
+using Umbraco.Core.Configuration.UmbracoSettings;
+
+namespace Umbraco.Configuration.Models
+{
+    internal class TourSettings : ITourSettings
+    {
+        private const string Prefix = Constants.Configuration.ConfigPrefix + "Tours:";
+        private readonly IConfiguration _configuration;
+
+        public TourSettings(IConfiguration configuration)
+        {
+            _configuration = configuration;
+        }
+
+        public string Type { get; set; }
+
+        public bool EnableTours => _configuration.GetValue(Prefix+"EnableTours", true);
+    }
+}

src/Umbraco.Configuration/Models/TypeFinderSettings.cs

@@ -0,0 +1,20 @@
+using Microsoft.Extensions.Configuration;
+using Umbraco.Core;
+using Umbraco.Core.Configuration;
+
+namespace Umbraco.Configuration.Models
+{
+    internal class TypeFinderSettings : ITypeFinderSettings
+    {
+        private const string Prefix = Constants.Configuration.ConfigPrefix + "TypeFinder:";
+        private readonly IConfiguration _configuration;
+
+        public TypeFinderSettings(IConfiguration configuration)
+        {
+            _configuration = configuration;
+        }
+
+        public string AssembliesAcceptingLoadExceptions =>
+            _configuration.GetValue<string>(Prefix+"AssembliesAcceptingLoadExceptions");
+    }
+}

src/Umbraco.Configuration/Models/UserPasswordConfigurationSettings.cs

@@ -0,0 +1,36 @@
+using Microsoft.Extensions.Configuration;
+using Umbraco.Core;
+using Umbraco.Core.Configuration;
+
+namespace Umbraco.Configuration.Models
+{
+    internal class UserPasswordConfigurationSettings : IUserPasswordConfiguration
+    {
+        private const string Prefix = Constants.Configuration.ConfigSecurityPrefix + "UserPassword:";
+        private readonly IConfiguration _configuration;
+
+        public UserPasswordConfigurationSettings(IConfiguration configuration)
+        {
+            _configuration = configuration;
+        }
+
+        public int RequiredLength => _configuration.GetValue(Prefix + "RequiredLength", 10);
+
+        public bool RequireNonLetterOrDigit =>
+            _configuration.GetValue(Prefix + "RequireNonLetterOrDigit", false);
+
+        public bool RequireDigit => _configuration.GetValue(Prefix + "RequireDigit", false);
+
+        public bool RequireLowercase =>
+            _configuration.GetValue(Prefix + "RequireLowercase", false);
+
+        public bool RequireUppercase =>
+            _configuration.GetValue(Prefix + "RequireUppercase", false);
+
+        public string HashAlgorithmType =>
+            _configuration.GetValue(Prefix + "HashAlgorithmType", "HMACSHA256");
+
+        public int MaxFailedAccessAttemptsBeforeLockout =>
+            _configuration.GetValue(Prefix + "MaxFailedAccessAttemptsBeforeLockout", 5);
+    }
+}

src/Umbraco.Configuration/Models/WebRoutingSettings.cs

@@ -0,0 +1,42 @@
+using Microsoft.Extensions.Configuration;
+using Umbraco.Core;
+using Umbraco.Core.Configuration.UmbracoSettings;
+using Umbraco.Core.Models.PublishedContent;
+
+namespace Umbraco.Configuration.Models
+{
+    internal class WebRoutingSettings : IWebRoutingSettings
+    {
+        private const string Prefix = Constants.Configuration.ConfigPrefix + "WebRouting:";
+        private readonly IConfiguration _configuration;
+
+        public WebRoutingSettings(IConfiguration configuration)
+        {
+            _configuration = configuration;
+        }
+
+        public bool TrySkipIisCustomErrors =>
+            _configuration.GetValue(Prefix + "TrySkipIisCustomErrors", false);
+
+        public bool InternalRedirectPreservesTemplate =>
+            _configuration.GetValue(Prefix + "InternalRedirectPreservesTemplate", false);
+
+        public bool DisableAlternativeTemplates =>
+            _configuration.GetValue(Prefix + "DisableAlternativeTemplates", false);
+
+        public bool ValidateAlternativeTemplates =>
+            _configuration.GetValue(Prefix + "ValidateAlternativeTemplates", false);
+
+        public bool DisableFindContentByIdPath =>
+            _configuration.GetValue(Prefix + "DisableFindContentByIdPath", false);
+
+        public bool DisableRedirectUrlTracking =>
+            _configuration.GetValue(Prefix + "DisableRedirectUrlTracking", false);
+
+        public string UrlProviderMode =>
+            _configuration.GetValue(Prefix + "UrlProviderMode", UrlMode.Auto.ToString());
+
+        public string UmbracoApplicationUrl =>
+            _configuration.GetValue<string>(Prefix + "UmbracoApplicationUrl");
+    }
+}

src/Umbraco.Configuration/Properties/AssemblyInfo.cs

@@ -4,6 +4,7 @@ using System.Runtime.InteropServices;
 
 // Umbraco Cms
 [assembly: InternalsVisibleTo("Umbraco.Tests")]
+[assembly: InternalsVisibleTo("Umbraco.Tests.Common")]
 [assembly: InternalsVisibleTo("Umbraco.Tests.Benchmarks")]
 
 // Allow this to be mocked in our unit tests

src/Umbraco.Configuration/Umbraco.Configuration.csproj

@@ -22,6 +22,9 @@
     </ItemGroup>
 
     <ItemGroup>
+      <PackageReference Include="Microsoft.Extensions.Configuration" Version="3.1.2" />
+      <PackageReference Include="Microsoft.Extensions.Configuration.Binder" Version="3.1.2" />
+      <PackageReference Include="Microsoft.Extensions.Configuration.Json" Version="3.1.2" />
       <PackageReference Include="System.Configuration.ConfigurationManager" Version="4.6.0" />
     </ItemGroup>
 
@@ -29,4 +32,10 @@
       <ProjectReference Include="..\Umbraco.Core\Umbraco.Core.csproj" />
     </ItemGroup>
 
+    <ItemGroup>
+        <AssemblyAttribute Include="System.Runtime.CompilerServices.InternalsVisibleTo">
+            <_Parameter1>Umbraco.Tests.Integration</_Parameter1>
+        </AssemblyAttribute>
+    </ItemGroup>
+
 </Project>

src/Umbraco.Configuration/UmbracoSettings/BackOfficeElement.cs

@@ -7,6 +7,6 @@ namespace Umbraco.Core.Configuration.UmbracoSettings
         [ConfigurationProperty("tours")]
         internal TourConfigElement Tours => (TourConfigElement)this["tours"];
 
-        ITourSection IBackOfficeSection.Tours => Tours;
+        ITourSettings IBackOfficeSection.Tours => Tours;
     }
 }

src/Umbraco.Configuration/UmbracoSettings/ContentElement.cs

@@ -4,7 +4,7 @@ using Umbraco.Core.Macros;
 
 namespace Umbraco.Core.Configuration.UmbracoSettings
 {
-    internal class ContentElement : UmbracoConfigurationElement, IContentSection
+    internal class ContentElement : UmbracoConfigurationElement, IContentSettings
     {
         private const string DefaultPreviewBadge = @"<div id=""umbracoPreviewBadge"" class=""umbraco-preview-badge""><span class=""umbraco-preview-badge__header"">Preview mode</span><a href=""{0}/preview/end?redir={1}"" class=""umbraco-preview-badge__end""><svg viewBox=""0 0 100 100"" xmlns=""http://www.w3.org/2000/svg""><title>Click to end</title><path d=""M5273.1 2400.1v-2c0-2.8-5-4-9.7-4s-9.7 1.3-9.7 4v2a7 7 0 002 4.9l5 4.9c.3.3.4.6.4 1v6.4c0 .4.2.7.6.8l2.9.9c.5.1 1-.2 1-.8v-7.2c0-.4.2-.7.4-1l5.1-5a7 7 0 002-4.9zm-9.7-.1c-4.8 0-7.4-1.3-7.5-1.8.1-.5 2.7-1.8 7.5-1.8s7.3 1.3 7.5 1.8c-.2.5-2.7 1.8-7.5 1.8z""/><path d=""M5268.4 2410.3c-.6 0-1 .4-1 1s.4 1 1 1h4.3c.6 0 1-.4 1-1s-.4-1-1-1h-4.3zM5272.7 2413.7h-4.3c-.6 0-1 .4-1 1s.4 1 1 1h4.3c.6 0 1-.4 1-1s-.4-1-1-1zM5272.7 2417h-4.3c-.6 0-1 .4-1 1s.4 1 1 1h4.3c.6 0 1-.4 1-1 0-.5-.4-1-1-1z""/><path d=""M78.2 13l-8.7 11.7a32.5 32.5 0 11-51.9 25.8c0-10.3 4.7-19.7 12.9-25.8L21.8 13a47 47 0 1056.4 0z""/><path d=""M42.7 2.5h14.6v49.4H42.7z""/></svg></a></div><style type=""text/css"">.umbraco-preview-badge {{position: absolute;top: 1em;right: 1em;display: inline-flex;background: #1b264f;color: #fff;padding: 1em;font-size: 12px;z-index: 99999999;justify-content: center;align-items: center;box-shadow: 0 10px 50px rgba(0, 0, 0, .1), 0 6px 20px rgba(0, 0, 0, .16);line-height: 1;}}.umbraco-preview-badge__header {{font-weight: bold;}}.umbraco-preview-badge__end {{width: 3em;padding: 1em;margin: -1em -1em -1em 2em;display: flex;flex-shrink: 0;align-items: center;align-self: stretch;}}.umbraco-preview-badge__end:hover,.umbraco-preview-badge__end:focus {{background: #f5c1bc;}}.umbraco-preview-badge__end svg {{fill: #fff;width:1em;}}</style>";
 
@@ -40,26 +40,26 @@ namespace Umbraco.Core.Configuration.UmbracoSettings
         [ConfigurationProperty("loginBackgroundImage")]
         internal InnerTextConfigurationElement<string> LoginBackgroundImage => GetOptionalTextElement("loginBackgroundImage", string.Empty);
 
-        string IContentSection.NotificationEmailAddress => Notifications.NotificationEmailAddress;
+        string IContentSettings.NotificationEmailAddress => Notifications.NotificationEmailAddress;
 
-        bool IContentSection.DisableHtmlEmail => Notifications.DisableHtmlEmail;
+        bool IContentSettings.DisableHtmlEmail => Notifications.DisableHtmlEmail;
 
-        IEnumerable<string> IContentSection.ImageFileTypes => Imaging.ImageFileTypes;
+        IEnumerable<string> IContentSettings.ImageFileTypes => Imaging.ImageFileTypes;
 
-        IEnumerable<IImagingAutoFillUploadField> IContentSection.ImageAutoFillProperties => Imaging.ImageAutoFillProperties;
+        IEnumerable<IImagingAutoFillUploadField> IContentSettings.ImageAutoFillProperties => Imaging.ImageAutoFillProperties;
 
-        bool IContentSection.ResolveUrlsFromTextString => ResolveUrlsFromTextString;
+        bool IContentSettings.ResolveUrlsFromTextString => ResolveUrlsFromTextString;
 
-        string IContentSection.PreviewBadge => PreviewBadge;
+        string IContentSettings.PreviewBadge => PreviewBadge;
 
-        MacroErrorBehaviour IContentSection.MacroErrorBehaviour => MacroErrors;
+        MacroErrorBehaviour IContentSettings.MacroErrorBehaviour => MacroErrors;
 
-        IEnumerable<string> IContentSection.DisallowedUploadFiles => DisallowedUploadFiles;
+        IEnumerable<string> IContentSettings.DisallowedUploadFiles => DisallowedUploadFiles;
 
-        IEnumerable<string> IContentSection.AllowedUploadFiles => AllowedUploadFiles;
+        IEnumerable<string> IContentSettings.AllowedUploadFiles => AllowedUploadFiles;
 
-        bool IContentSection.ShowDeprecatedPropertyEditors => ShowDeprecatedPropertyEditors;
+        bool IContentSettings.ShowDeprecatedPropertyEditors => ShowDeprecatedPropertyEditors;
 
-        string IContentSection.LoginBackgroundImage => LoginBackgroundImage;
+        string IContentSettings.LoginBackgroundImage => LoginBackgroundImage;
     }
 }

src/Umbraco.Configuration/UmbracoSettings/KeepAliveElement.cs

@@ -2,7 +2,7 @@
 
 namespace Umbraco.Core.Configuration.UmbracoSettings
 {
-    internal class KeepAliveElement : ConfigurationElement, IKeepAliveSection
+    internal class KeepAliveElement : ConfigurationElement, IKeepAliveSettings
     {
         [ConfigurationProperty("disableKeepAliveTask", DefaultValue = "false")]
         public bool DisableKeepAliveTask => (bool)base["disableKeepAliveTask"];

src/Umbraco.Configuration/UmbracoSettings/LoggingElement.cs

@@ -3,12 +3,12 @@ using System.Configuration;
 
 namespace Umbraco.Core.Configuration.UmbracoSettings
 {
-    internal class LoggingElement : UmbracoConfigurationElement, ILoggingSection
+    internal class LoggingElement : UmbracoConfigurationElement, ILoggingSettings
     {
 
         [ConfigurationProperty("maxLogAge")]
         internal InnerTextConfigurationElement<int> MaxLogAge => GetOptionalTextElement("maxLogAge", -1);
 
-        int ILoggingSection.MaxLogAge => MaxLogAge;
+        int ILoggingSettings.MaxLogAge => MaxLogAge;
     }
 }

src/Umbraco.Configuration/UmbracoSettings/MemberPasswordConfigurationElement.cs

@@ -1,6 +1,6 @@
 namespace Umbraco.Core.Configuration.UmbracoSettings
 {
-    internal class MemberPasswordConfigurationElement : PasswordConfigurationElement, IMemberPasswordConfigurationSection
+    internal class MemberPasswordConfigurationElement : PasswordConfigurationElement, IMemberPasswordConfiguration
     {
     }
 }

src/Umbraco.Configuration/UmbracoSettings/RequestHandlerElement.cs

@@ -5,7 +5,7 @@ using System.Collections.Generic;
 
 namespace Umbraco.Core.Configuration.UmbracoSettings
 {
-    internal class RequestHandlerElement : UmbracoConfigurationElement, IRequestHandlerSection
+    internal class RequestHandlerElement : UmbracoConfigurationElement, IRequestHandlerSettings
     {
         [ConfigurationProperty("addTrailingSlash")]
         public InnerTextConfigurationElement<bool> AddTrailingSlash => GetOptionalTextElement("addTrailingSlash", true);
@@ -85,12 +85,12 @@ namespace Umbraco.Core.Configuration.UmbracoSettings
             return collection;
         }
 
-        bool IRequestHandlerSection.AddTrailingSlash => AddTrailingSlash;
+        bool IRequestHandlerSettings.AddTrailingSlash => AddTrailingSlash;
 
-        bool IRequestHandlerSection.ConvertUrlsToAscii => UrlReplacing.ConvertUrlsToAscii.InvariantEquals("true");
+        bool IRequestHandlerSettings.ConvertUrlsToAscii => UrlReplacing.ConvertUrlsToAscii.InvariantEquals("true");
 
-        bool IRequestHandlerSection.TryConvertUrlsToAscii => UrlReplacing.ConvertUrlsToAscii.InvariantEquals("try");
+        bool IRequestHandlerSettings.TryConvertUrlsToAscii => UrlReplacing.ConvertUrlsToAscii.InvariantEquals("try");
 
-        IEnumerable<IChar> IRequestHandlerSection.CharCollection => UrlReplacing.CharCollection;
+        IEnumerable<IChar> IRequestHandlerSettings.CharCollection => UrlReplacing.CharCollection;
     }
 }

src/Umbraco.Configuration/UmbracoSettings/SecurityElement.cs

@@ -2,7 +2,7 @@
 
 namespace Umbraco.Core.Configuration.UmbracoSettings
 {
-    internal class SecurityElement : UmbracoConfigurationElement, ISecuritySection
+    internal class SecurityElement : UmbracoConfigurationElement, ISecuritySettings
     {
         [ConfigurationProperty("keepUserLoggedIn")]
         internal InnerTextConfigurationElement<bool> KeepUserLoggedIn => GetOptionalTextElement("keepUserLoggedIn", true);
@@ -38,14 +38,14 @@ namespace Umbraco.Core.Configuration.UmbracoSettings
         [ConfigurationProperty("memberPasswordConfiguration")]
         public MemberPasswordConfigurationElement MemberPasswordConfiguration => (MemberPasswordConfigurationElement)this["memberPasswordConfiguration"];
 
-        bool ISecuritySection.KeepUserLoggedIn => KeepUserLoggedIn;
+        bool ISecuritySettings.KeepUserLoggedIn => KeepUserLoggedIn;
 
-        bool ISecuritySection.HideDisabledUsersInBackoffice => HideDisabledUsersInBackoffice;
+        bool ISecuritySettings.HideDisabledUsersInBackoffice => HideDisabledUsersInBackoffice;
 
         /// <summary>
         /// Used to enable/disable the forgot password functionality on the back office login screen
         /// </summary>
-        bool ISecuritySection.AllowPasswordReset => AllowPasswordReset;
+        bool ISecuritySettings.AllowPasswordReset => AllowPasswordReset;
 
         /// <summary>
         /// A boolean indicating that by default the email address will be the username
@@ -54,14 +54,10 @@ namespace Umbraco.Core.Configuration.UmbracoSettings
         /// Even if this is true and the username is different from the email in the database, the username field will still be shown.
         /// When this is false, the username and email fields will be shown in the user section.
         /// </remarks>
-        bool ISecuritySection.UsernameIsEmail => UsernameIsEmail;
+        bool ISecuritySettings.UsernameIsEmail => UsernameIsEmail;
 
-        string ISecuritySection.AuthCookieName => AuthCookieName;
+        string ISecuritySettings.AuthCookieName => AuthCookieName;
 
-        string ISecuritySection.AuthCookieDomain => AuthCookieDomain;
-
-        IUserPasswordConfigurationSection ISecuritySection.UserPasswordConfiguration => UserPasswordConfiguration;
-
-        IMemberPasswordConfigurationSection ISecuritySection.MemberPasswordConfiguration => MemberPasswordConfiguration;
+        string ISecuritySettings.AuthCookieDomain => AuthCookieDomain;
     }
 }

src/Umbraco.Configuration/UmbracoSettings/TourConfigElement.cs

@@ -2,7 +2,7 @@
 
 namespace Umbraco.Core.Configuration.UmbracoSettings
 {
-    internal class TourConfigElement : UmbracoConfigurationElement, ITourSection
+    internal class TourConfigElement : UmbracoConfigurationElement, ITourSettings
     {
         //disabled by default so that upgraders don't get it enabled by default
         // TODO: we probably just want to disable the initial one from automatically loading ?

src/Umbraco.Configuration/UmbracoSettings/UmbracoSettingsSection.cs

@@ -2,7 +2,7 @@
 
 namespace Umbraco.Core.Configuration.UmbracoSettings
 {
-    internal class UmbracoSettingsSection : ConfigurationSection, IUmbracoSettingsSection
+    internal class UmbracoSettingsSection : ConfigurationSection
     {
         [ConfigurationProperty("backOffice")]
         public BackOfficeElement BackOffice => (BackOfficeElement)this["backOffice"];
@@ -24,19 +24,5 @@ namespace Umbraco.Core.Configuration.UmbracoSettings
 
         [ConfigurationProperty("keepAlive")]
         internal KeepAliveElement KeepAlive => (KeepAliveElement)this["keepAlive"];
-
-        IContentSection IUmbracoSettingsSection.Content => Content;
-
-        ISecuritySection IUmbracoSettingsSection.Security => Security;
-
-        IRequestHandlerSection IUmbracoSettingsSection.RequestHandler => RequestHandler;
-
-        IBackOfficeSection IUmbracoSettingsSection.BackOffice => BackOffice;
-
-        ILoggingSection IUmbracoSettingsSection.Logging => Logging;
-
-        IWebRoutingSection IUmbracoSettingsSection.WebRouting => WebRouting;
-
-        IKeepAliveSection IUmbracoSettingsSection.KeepAlive => KeepAlive;
     }
 }

src/Umbraco.Configuration/UmbracoSettings/UserPasswordConfigurationElement.cs

@@ -1,6 +1,6 @@
 namespace Umbraco.Core.Configuration.UmbracoSettings
 {
-    internal class UserPasswordConfigurationElement : PasswordConfigurationElement, IUserPasswordConfigurationSection
+    internal class UserPasswordConfigurationElement : PasswordConfigurationElement, IUserPasswordConfiguration
     {
     }
 }

src/Umbraco.Configuration/UmbracoSettings/WebRoutingElement.cs

@@ -2,7 +2,7 @@
 
 namespace Umbraco.Core.Configuration.UmbracoSettings
 {
-    internal class WebRoutingElement : ConfigurationElement, IWebRoutingSection
+    internal class WebRoutingElement : ConfigurationElement, IWebRoutingSettings
     {
         [ConfigurationProperty("trySkipIisCustomErrors", DefaultValue = "false")]
         public bool TrySkipIisCustomErrors => (bool) base["trySkipIisCustomErrors"];

src/Umbraco.Configuration/UmbracoVersionExtensions.cs

@@ -1,33 +0,0 @@
-using System.Configuration;
-using Semver;
-using Umbraco.Core;
-using Umbraco.Core.Configuration;
-
-namespace Umbraco.Configuration
-{
-    public static class UmbracoVersionExtensions
-    {
-        /// <summary>
-        /// Gets the "local" version of the site.
-        /// </summary>
-        /// <remarks>
-        /// <para>Three things have a version, really: the executing code, the database model,
-        /// and the site/files. The database model version is entirely managed via migrations,
-        /// and changes during an upgrade. The executing code version changes when new code is
-        /// deployed. The site/files version changes during an upgrade.</para>
-        /// </remarks>
-        public static SemVersion LocalVersion(this IUmbracoVersion umbracoVersion)
-        {
-            try
-            {
-                // TODO: https://github.com/umbraco/Umbraco-CMS/issues/4238 - stop having version in web.config appSettings
-                var value = ConfigurationManager.AppSettings[Constants.AppSettings.ConfigurationStatus];
-                return value.IsNullOrWhiteSpace() ? null : SemVersion.TryParse(value, out var semver) ? semver : null;
-            }
-            catch
-            {
-                return null;
-            }
-        }
-    }
-}

src/Umbraco.Core/Actions/ActionCollectionBuilder.cs

@@ -4,7 +4,7 @@ using System.Linq;
 using Umbraco.Core.Composing;
 namespace Umbraco.Web.Actions
 {
-    internal class ActionCollectionBuilder : LazyCollectionBuilderBase<ActionCollectionBuilder, ActionCollection, IAction>
+    public class ActionCollectionBuilder : LazyCollectionBuilderBase<ActionCollectionBuilder, ActionCollection, IAction>
     {
         protected override ActionCollectionBuilder This => this;
 

src/Umbraco.Core/AssemblyExtensions.cs

@@ -6,6 +6,35 @@ namespace Umbraco.Core
 {
     public static class AssemblyExtensions
     {
+        private static string _rootDir = "";
+
+        /// <summary>
+        /// Utility method that returns the path to the root of the application, by getting the path to where the assembly where this
+        /// method is included is present, then traversing until it's past the /bin directory. Ie. this makes it work
+        /// even if the assembly is in a /bin/debug or /bin/release folder
+        /// </summary>
+        /// <returns></returns>
+        public static string GetRootDirectorySafe(this Assembly executingAssembly)
+        {
+            if (string.IsNullOrEmpty(_rootDir) == false)
+            {
+                return _rootDir;
+            }
+
+            var codeBase = executingAssembly.CodeBase;
+            var uri = new Uri(codeBase);
+            var path = uri.LocalPath;
+            var baseDirectory = Path.GetDirectoryName(path);
+            if (string.IsNullOrEmpty(baseDirectory))
+                throw new Exception("No root directory could be resolved. Please ensure that your Umbraco solution is correctly configured.");
+
+            _rootDir = baseDirectory.Contains("bin")
+                ? baseDirectory.Substring(0, baseDirectory.LastIndexOf("bin", StringComparison.OrdinalIgnoreCase) - 1)
+                : baseDirectory;
+
+            return _rootDir;
+        }
+
         /// <summary>
         /// Returns the file used to load the assembly
         /// </summary>

src/Umbraco.Core/Cache/DeepCloneAppCache.cs

@@ -73,7 +73,7 @@ namespace Umbraco.Core.Cache
                 var result = SafeLazy.GetSafeLazy(factory);
                 var value = result.Value; // force evaluation now - this may throw if cacheItem throws, and then nothing goes into cache
                 // do not store null values (backward compat), clone / reset to go into the cache
-                return value == null ? null : CheckCloneableAndTracksChanges(value); 
+                return value == null ? null : CheckCloneableAndTracksChanges(value);
 
                 // clone / reset to go into the cache
             }, timeout, isSliding, dependentFiles);
@@ -107,9 +107,9 @@ namespace Umbraco.Core.Cache
         }
 
         /// <inheritdoc />
-        public void ClearOfType(string typeName)
+        public void ClearOfType(Type type)
         {
-            InnerCache.ClearOfType(typeName);
+            InnerCache.ClearOfType(type);
         }
 
         /// <inheritdoc />

src/Umbraco.Core/Cache/DictionaryAppCache.cs

@@ -71,16 +71,16 @@ namespace Umbraco.Core.Cache
         }
 
         /// <inheritdoc />
-        public virtual void ClearOfType(string typeName)
+        public virtual void ClearOfType(Type type)
         {
-            _items.RemoveAll(kvp => kvp.Value != null && kvp.Value.GetType().ToString().InvariantEquals(typeName));
+            _items.RemoveAll(kvp => kvp.Value != null && kvp.Value.GetType() == type);
         }
 
         /// <inheritdoc />
         public virtual void ClearOfType<T>()
         {
             var typeOfT = typeof(T);
-            _items.RemoveAll(kvp => kvp.Value != null && kvp.Value.GetType() == typeOfT);
+            ClearOfType(typeOfT);
         }
 
         /// <inheritdoc />

src/Umbraco.Core/Cache/FastDictionaryAppCache.cs

@@ -12,12 +12,6 @@ namespace Umbraco.Core.Cache
     /// </summary>
     public class FastDictionaryAppCache : IAppCache
     {
-        private readonly ITypeFinder _typeFinder;
-
-        public FastDictionaryAppCache(ITypeFinder typeFinder)
-        {
-            _typeFinder = typeFinder ?? throw new ArgumentNullException(nameof(typeFinder));
-        }
 
         /// <summary>
         /// Gets the internal items dictionary, for tests only!
@@ -83,9 +77,8 @@ namespace Umbraco.Core.Cache
         }
 
         /// <inheritdoc />
-        public void ClearOfType(string typeName)
+        public void ClearOfType(Type type)
         {
-            var type = _typeFinder.GetTypeByName(typeName);
             if (type == null) return;
             var isInterface = type.IsInterface;
 

src/Umbraco.Core/Cache/FastDictionaryAppCacheBase.cs

@@ -12,13 +12,6 @@ namespace Umbraco.Core.Cache
     /// </summary>
     public abstract class FastDictionaryAppCacheBase : IAppCache
     {
-        private readonly ITypeFinder _typeFinder;
-
-        protected FastDictionaryAppCacheBase(ITypeFinder typeFinder)
-        {
-            _typeFinder = typeFinder ?? throw new ArgumentNullException(nameof(typeFinder));
-        }
-
         // prefix cache keys so we know which one are ours
         protected const string CacheItemPrefix = "umbrtmche";
 
@@ -121,9 +114,8 @@ namespace Umbraco.Core.Cache
         }
 
         /// <inheritdoc />
-        public virtual void ClearOfType(string typeName)
+        public virtual void ClearOfType(Type type)
         {
-            var type = _typeFinder.GetTypeByName(typeName);
             if (type == null) return;
             var isInterface = type.IsInterface;
             try

src/Umbraco.Core/Cache/HttpRequestAppCache.cs

@@ -20,7 +20,7 @@ namespace Umbraco.Core.Cache
         /// <summary>
         /// Initializes a new instance of the <see cref="HttpRequestAppCache"/> class with a context, for unit tests!
         /// </summary>
-        public HttpRequestAppCache(Func<IDictionary> requestItems, ITypeFinder typeFinder) : base(typeFinder)
+        public HttpRequestAppCache(Func<IDictionary> requestItems) : base()
         {
             ContextItems = requestItems;
         }

src/Umbraco.Core/Cache/IAppCache.cs

@@ -51,14 +51,14 @@ namespace Umbraco.Core.Cache
         /// <summary>
         /// Removes items of a specified type from the cache.
         /// </summary>
-        /// <param name="typeName">The name of the type to remove.</param>
+        /// <param name="type">The type to remove.</param>
         /// <remarks>
         /// <para>If the type is an interface, then all items of a type implementing that interface are
         /// removed. Otherwise, only items of that exact type are removed (items of type inheriting from
         /// the specified type are not removed).</para>
         /// <para>Performs a case-sensitive search.</para>
         /// </remarks>
-        void ClearOfType(string typeName);
+        void ClearOfType(Type type);
 
         /// <summary>
         /// Removes items of a specified type from the cache.

src/Umbraco.Core/Cache/MacroCacheRefresher.cs

@@ -53,7 +53,7 @@ namespace Umbraco.Web.Cache
                 {
                     macroRepoCache.Result.Clear(RepositoryCacheKeys.GetKey<IMacro>(payload.Id));
                 }
-            };
+            }
 
             base.Refresh(json);
         }

src/Umbraco.Core/Cache/NoAppCache.cs

@@ -67,7 +67,7 @@ namespace Umbraco.Core.Cache
         { }
 
         /// <inheritdoc />
-        public virtual void ClearOfType(string typeName)
+        public virtual void ClearOfType(Type type)
         { }
 
         /// <inheritdoc />

src/Umbraco.Core/Cache/ObjectCacheAppCache.cs

@@ -13,15 +13,13 @@ namespace Umbraco.Core.Cache
     /// </summary>
     public class ObjectCacheAppCache : IAppPolicyCache
     {
-        private readonly ITypeFinder _typeFinder;
         private readonly ReaderWriterLockSlim _locker = new ReaderWriterLockSlim(LockRecursionPolicy.SupportsRecursion);
 
         /// <summary>
         /// Initializes a new instance of the <see cref="ObjectCacheAppCache"/>.
         /// </summary>
-        public ObjectCacheAppCache(ITypeFinder typeFinder)
+        public ObjectCacheAppCache()
         {
-            _typeFinder = typeFinder ?? throw new ArgumentNullException(nameof(typeFinder));
             // the MemoryCache is created with name "in-memory". That name is
             // used to retrieve configuration options. It does not identify the memory cache, i.e.
             // each instance of this class has its own, independent, memory cache.
@@ -178,9 +176,8 @@ namespace Umbraco.Core.Cache
         }
 
         /// <inheritdoc />
-        public virtual void ClearOfType(string typeName)
+        public virtual void ClearOfType(Type type)
         {
-            var type = _typeFinder.GetTypeByName(typeName);
             if (type == null) return;
             var isInterface = type.IsInterface;
             try

src/Umbraco.Core/Collections/TopoGraph.cs

@@ -126,7 +126,7 @@ namespace Umbraco.Core.Collections
                 if (_items.TryGetValue(key, out value))
                     yield return value;
                 else if (throwOnMissing)
-                    throw new Exception(MissingDependencyError);
+                    throw new Exception($"{MissingDependencyError} Error in type {typeof(TItem).Name}, with key {key}");
             }
         }
     }

src/Umbraco.Core/Composing/CollectionBuilderBase.cs

@@ -79,9 +79,12 @@ namespace Umbraco.Core.Composing
                 foreach (var type in types)
                     EnsureType(type, "register");
 
-                // register them
+                // register them - ensuring that each item is registered with the same lifetime as the collection.
+                // NOTE: Previously each one was not registered with the same lifetime which would mean that if there
+                // was a dependency on an individual item, it would resolve a brand new transient instance which isn't what
+                // we would expect to happen. The same item should be resolved from the container as the collection.
                 foreach (var type in types)
-                    register.Register(type);
+                    register.Register(type, CollectionLifetime);
 
                 _registeredTypes = types;
             }

src/Umbraco.Core/Composing/Composition.cs

@@ -31,15 +31,16 @@ namespace Umbraco.Core.Composing
         /// <param name="runtimeState">The runtime state.</param>
         /// <param name="configs">Optional configs.</param>
         /// <param name="ioHelper">An IOHelper</param>
+        /// <param name="appCaches"></param>
         public Composition(IRegister register,  TypeLoader typeLoader, IProfilingLogger logger, IRuntimeState runtimeState, Configs configs, IIOHelper ioHelper, AppCaches appCaches)
         {
-            _register = register;
-            TypeLoader = typeLoader;
-            Logger = logger;
-            RuntimeState = runtimeState;
-            Configs = configs;
-            IOHelper = ioHelper;
-            AppCaches = appCaches;
+            _register = register ?? throw new ArgumentNullException(nameof(register));
+            TypeLoader = typeLoader ?? throw new ArgumentNullException(nameof(typeLoader));
+            Logger = logger ?? throw new ArgumentNullException(nameof(logger));
+            RuntimeState = runtimeState ?? throw new ArgumentNullException(nameof(runtimeState));
+            Configs = configs ?? throw new ArgumentNullException(nameof(configs));
+            IOHelper = ioHelper ?? throw new ArgumentNullException(nameof(ioHelper));
+            AppCaches = appCaches ?? throw new ArgumentNullException(nameof(appCaches));
         }
 
         #region Services
@@ -135,7 +136,7 @@ namespace Umbraco.Core.Composing
 
             IFactory factory = null;
 
-            Configs.RegisterWith(_register, () => factory);
+            Configs.RegisterWith(_register);
 
             // ReSharper disable once AccessToModifiedClosure -- on purpose
             _register.Register(_ => factory, Lifetime.Singleton);

src/Umbraco.Core/Composing/DefaultUmbracoAssemblyProvider.cs

@@ -0,0 +1,50 @@
+using System;
+using System.Collections.Generic;
+using System.Reflection;
+
+namespace Umbraco.Core.Composing
+{
+    /// <summary>
+    /// Returns a list of scannable assemblies based on an entry point assembly and it's references
+    /// </summary>
+    /// <remarks>
+    /// This will recursively search through the entry point's assemblies and Umbraco's core assemblies and their references
+    /// to create a list of scannable assemblies based on whether they themselves or their transitive dependencies reference Umbraco core assemblies.
+    /// </remarks>
+    public class DefaultUmbracoAssemblyProvider : IAssemblyProvider
+    {
+        private readonly Assembly _entryPointAssembly;
+        private static readonly string[] UmbracoCoreAssemblyNames = new[]
+            {
+                "Umbraco.Core",
+                "Umbraco.Web",
+                "Umbraco.Infrastructure",
+                "Umbraco.PublishedCache.NuCache",
+                "Umbraco.ModelsBuilder.Embedded",
+                "Umbraco.Examine.Lucene",
+                "Umbraco.Web.Common",
+                "Umbraco.Web.BackOffice",
+                "Umbraco.Web.Website",
+            };
+
+        public DefaultUmbracoAssemblyProvider(Assembly entryPointAssembly)
+        {
+            _entryPointAssembly = entryPointAssembly ?? throw new ArgumentNullException(nameof(entryPointAssembly));
+        }
+
+        // TODO: It would be worth investigating a netcore3 version of this which would use
+        // var allAssemblies = System.Runtime.Loader.AssemblyLoadContext.All.SelectMany(x => x.Assemblies);
+        // that will still only resolve Assemblies that are already loaded but it would also make it possible to
+        // query dynamically generated assemblies once they are added. It would also provide the ability to probe
+        // assembly locations that are not in the same place as the entry point assemblies.
+
+        public IEnumerable<Assembly> Assemblies
+        {
+            get
+            {
+                var finder = new FindAssembliesWithReferencesTo(new[] { _entryPointAssembly }, UmbracoCoreAssemblyNames, true);
+                return finder.Find();
+            }
+        }
+    }
+}

src/Umbraco.Core/Composing/DisableAttribute.cs

@@ -1,4 +1,5 @@
 using System;
+using System.Reflection;
 
 namespace Umbraco.Core.Composing
 {
@@ -21,6 +22,11 @@ namespace Umbraco.Core.Composing
         public DisableAttribute()
         { }
 
+        public DisableAttribute(string fullTypeName, string assemblyName)
+        {
+            DisabledType = Assembly.Load(assemblyName)?.GetType(fullTypeName);
+        }
+
         /// <summary>
         /// Initializes a new instance of the <see cref="DisableAttribute"/> class.
         /// </summary>

src/Umbraco.Core/Composing/FindAssembliesWithReferencesTo.cs

@@ -0,0 +1,63 @@
+using System;
+using System.Collections.Generic;
+using System.IO;
+using System.Linq;
+using System.Reflection;
+
+namespace Umbraco.Core.Composing
+{
+    /// <summary>
+    /// Finds Assemblies from the entry point assemblies, it's dependencies and it's transitive dependencies that reference that targetAssemblyNames
+    /// </summary>
+    /// <remarkes>
+    /// borrowed and modified from here https://github.com/dotnet/aspnetcore-tooling/blob/master/src/Razor/src/Microsoft.NET.Sdk.Razor/FindAssembliesWithReferencesTo.cs
+    /// </remarkes>
+    internal class FindAssembliesWithReferencesTo
+    {
+        private readonly Assembly[] _referenceAssemblies;
+        private readonly string[] _targetAssemblies;
+        private readonly bool _includeTargets;
+
+        /// <summary>
+        /// Constructor
+        /// </summary>
+        /// <param name="referenceAssemblies">Entry point assemblies</param>
+        /// <param name="targetAssemblyNames">Used to check if the entry point or it's transitive assemblies reference these assembly names</param>
+        /// <param name="includeTargets">If true will also use the target assembly names as entry point assemblies</param>
+        public FindAssembliesWithReferencesTo(Assembly[] referenceAssemblies, string[] targetAssemblyNames, bool includeTargets)
+        {
+            _referenceAssemblies = referenceAssemblies;
+            _targetAssemblies = targetAssemblyNames;
+            _includeTargets = includeTargets;
+        }
+
+        public IEnumerable<Assembly> Find()
+        {
+            var referenceItems = new List<Assembly>();
+            foreach (var assembly in _referenceAssemblies)
+            {
+                referenceItems.Add(assembly);
+            }
+
+            if (_includeTargets)
+            {
+                foreach(var target in _targetAssemblies)
+                {
+                    try
+                    {
+                        referenceItems.Add(Assembly.Load(target));
+                    }
+                    catch (FileNotFoundException)
+                    {
+                        // occurs if we cannot load this ... for example in a test project where we aren't currently referencing Umbraco.Web, etc...
+                    }
+                }
+            }
+
+            var provider = new ReferenceResolver(_targetAssemblies, referenceItems);
+            var assemblyNames = provider.ResolveAssemblies();
+            return assemblyNames.ToList();
+        }
+
+    }
+}

src/Umbraco.Core/Composing/IAssemblyProvider.cs

@@ -0,0 +1,13 @@
+using System.Collections.Generic;
+using System.Reflection;
+
+namespace Umbraco.Core.Composing
+{
+    /// <summary>
+    /// Provides a list of assemblies that can be scanned
+    /// </summary>
+    public interface IAssemblyProvider
+    {
+        IEnumerable<Assembly> Assemblies { get; }
+    }
+}

src/Umbraco.Core/Composing/IRuntimeHash.cs

@@ -0,0 +1,14 @@
+namespace Umbraco.Core.Composing
+{
+    /// <summary>
+    /// Used to create a hash value of the current runtime
+    /// </summary>
+    /// <remarks>
+    /// This is used to detect if the runtime itself has changed, like a DLL has changed or another dynamically compiled
+    /// part of the application has changed. This is used to detect if we need to re-type scan.
+    /// </remarks>
+    public interface IRuntimeHash
+    {
+        string GetHashValue();
+    }
+}

src/Umbraco.Core/Composing/ITypeFinder.cs

@@ -51,5 +51,14 @@ namespace Umbraco.Core.Composing
             Type attributeType,
             IEnumerable<Assembly> assemblies,
             bool onlyConcreteClasses);
+
+        /// <summary>
+        /// Gets a hash value of the current runtime
+        /// </summary>
+        /// <remarks>
+        /// This is used to detect if the runtime itself has changed, like a DLL has changed or another dynamically compiled
+        /// part of the application has changed. This is used to detect if we need to re-type scan.
+        /// </remarks>
+        string GetRuntimeHash();
     }
 }

src/Umbraco.Core/Composing/ReferenceResolver.cs

@@ -0,0 +1,173 @@
+using System;
+using System.Collections.Generic;
+using System.Diagnostics;
+using System.IO;
+using System.Linq;
+using System.Reflection;
+
+namespace Umbraco.Core.Composing
+{
+    /// <summary>
+    /// Resolves assemblies that reference one of the specified "targetAssemblies" either directly or transitively.
+    /// </summary>
+    /// <remarks>
+    /// Borrowed and modified from https://github.com/dotnet/aspnetcore-tooling/blob/master/src/Razor/src/Microsoft.NET.Sdk.Razor/ReferenceResolver.cs
+    /// </remarks>
+    internal class ReferenceResolver
+    {
+        private readonly HashSet<string> _umbracoAssemblies;
+        private readonly IReadOnlyList<Assembly> _assemblies;
+        private readonly Dictionary<Assembly, Classification> _classifications;
+        private readonly List<Assembly> _lookup = new List<Assembly>();
+
+        public ReferenceResolver(IReadOnlyList<string> targetAssemblies, IReadOnlyList<Assembly> entryPointAssemblies)
+        {
+            _umbracoAssemblies = new HashSet<string>(targetAssemblies, StringComparer.Ordinal);
+            _assemblies = entryPointAssemblies;
+            _classifications = new Dictionary<Assembly, Classification>();
+
+            foreach (var item in entryPointAssemblies)
+            {
+                _lookup.Add(item);
+            }
+        }
+
+        /// <summary>
+        /// Returns a list of assemblies that directly reference or transitively reference the targetAssemblies
+        /// </summary>
+        /// <returns></returns>
+        /// <remarks>
+        /// This includes all assemblies in the same location as the entry point assemblies
+        /// </remarks>
+        public IEnumerable<Assembly> ResolveAssemblies()
+        {
+            var applicationParts = new List<Assembly>();
+
+            var assemblies = new HashSet<Assembly>(_assemblies);
+
+            // Get the unique directories of the assemblies
+            var assemblyLocations = GetAssemblyFolders(assemblies).ToList();
+
+            // Load in each assembly in the directory of the entry assembly to be included in the search
+            // for Umbraco dependencies/transitive dependencies
+            foreach(var dir in assemblyLocations)
+            {   
+                foreach(var dll in Directory.EnumerateFiles(dir, "*.dll"))
+                {
+                    var assemblyName = AssemblyName.GetAssemblyName(dll);
+
+                    // don't include if this is excluded
+                    if (TypeFinder.KnownAssemblyExclusionFilter.Any(f => assemblyName.FullName.StartsWith(f, StringComparison.InvariantCultureIgnoreCase)))
+                        continue;
+
+                    // don't include this item if it's Umbraco
+                    // TODO: We should maybe pass an explicit list of these names in?
+                    if (assemblyName.FullName.StartsWith("Umbraco."))
+                        continue;
+
+                    var assembly = Assembly.Load(assemblyName);
+                    assemblies.Add(assembly);
+                }
+            }
+
+            foreach (var item in assemblies)
+            {
+                var classification = Resolve(item);
+                if (classification == Classification.ReferencesUmbraco || classification == Classification.IsUmbraco)
+                {
+                    applicationParts.Add(item);
+                }
+            }
+
+            return applicationParts;
+        }
+
+
+        private IEnumerable<string> GetAssemblyFolders(IEnumerable<Assembly> assemblies)
+        {
+            return assemblies.Select(x => Path.GetDirectoryName(GetAssemblyLocation(x)).ToLowerInvariant()).Distinct();
+        }
+
+        // borrowed from https://github.com/dotnet/aspnetcore/blob/master/src/Mvc/Mvc.Core/src/ApplicationParts/RelatedAssemblyAttribute.cs
+        private string GetAssemblyLocation(Assembly assembly)
+        {
+            if (Uri.TryCreate(assembly.CodeBase, UriKind.Absolute, out var result) &&
+                result.IsFile && string.IsNullOrWhiteSpace(result.Fragment))
+            {
+                return result.LocalPath;
+            }
+
+            return assembly.Location;
+        }
+
+        private Classification Resolve(Assembly assembly)
+        {
+            if (_classifications.TryGetValue(assembly, out var classification))
+            {
+                return classification;
+            }
+
+            // Initialize the dictionary with a value to short-circuit recursive references.
+            classification = Classification.Unknown;
+            _classifications[assembly] = classification;
+            
+            if (TypeFinder.KnownAssemblyExclusionFilter.Any(f => assembly.FullName.StartsWith(f, StringComparison.InvariantCultureIgnoreCase)))
+            {
+                // if its part of the filter it doesn't reference umbraco
+                classification = Classification.DoesNotReferenceUmbraco;
+            }                
+            else if (_umbracoAssemblies.Contains(assembly.GetName().Name))
+            {
+                classification = Classification.IsUmbraco;
+            }
+            else
+            {
+                classification = Classification.DoesNotReferenceUmbraco;
+                foreach (var reference in GetReferences(assembly))
+                {
+                    // recurse
+                    var referenceClassification = Resolve(reference);
+
+                    if (referenceClassification == Classification.IsUmbraco || referenceClassification == Classification.ReferencesUmbraco)
+                    {
+                        classification = Classification.ReferencesUmbraco;
+                        break;
+                    }
+                }
+            }
+
+            Debug.Assert(classification != Classification.Unknown);
+            _classifications[assembly] = classification;
+            return classification;
+        }
+
+        protected virtual IEnumerable<Assembly> GetReferences(Assembly assembly)
+        {            
+            foreach (var referenceName in assembly.GetReferencedAssemblies())
+            {
+                // don't include if this is excluded
+                if (TypeFinder.KnownAssemblyExclusionFilter.Any(f => referenceName.FullName.StartsWith(f, StringComparison.InvariantCultureIgnoreCase)))
+                    continue;
+
+                var reference = Assembly.Load(referenceName);
+
+                if (!_lookup.Contains(reference))
+                {
+                    // A dependency references an item that isn't referenced by this project.
+                    // We'll add this reference so that we can calculate the classification.
+
+                    _lookup.Add(reference);                    
+                }
+                yield return reference;
+            }
+        }
+
+        protected enum Classification
+        {
+            Unknown,
+            DoesNotReferenceUmbraco,
+            ReferencesUmbraco,
+            IsUmbraco,
+        }
+    }
+}

src/Umbraco.Core/Composing/RuntimeHash.cs

@@ -0,0 +1,91 @@
+using System.Collections.Generic;
+using System.IO;
+using System.Linq;
+using Umbraco.Core.Logging;
+
+namespace Umbraco.Core.Composing
+{
+    /// <summary>
+    /// Determines the runtime hash based on file system paths to scan
+    /// </summary>
+    public class RuntimeHash : IRuntimeHash
+    {
+        private readonly IProfilingLogger _logger;
+        private readonly RuntimeHashPaths _paths;
+
+        public RuntimeHash(IProfilingLogger logger, RuntimeHashPaths paths)
+        {
+            _logger = logger;
+            _paths = paths;
+        }
+
+
+        public string GetHashValue()
+        {
+            var allPaths = _paths.GetFolders()
+                .Select(x => ((FileSystemInfo) x, false))
+                .Concat(_paths.GetFiles().Select(x => ((FileSystemInfo) x.Key, x.Value)));
+
+            var hash = GetFileHash(allPaths);
+
+            return hash;
+        }
+
+        /// <summary>
+        /// Returns a unique hash for a combination of FileInfo objects.
+        /// </summary>
+        /// <param name="filesAndFolders">A collection of files.</param>
+        /// <returns>The hash.</returns>
+        /// <remarks>Each file is a tuple containing the FileInfo object and a boolean which indicates whether to hash the
+        /// file properties (false) or the file contents (true).</remarks>
+        private string GetFileHash(IEnumerable<(FileSystemInfo fileOrFolder, bool scanFileContent)> filesAndFolders)
+        {
+            using (_logger.DebugDuration<TypeLoader>("Determining hash of code files on disk", "Hash determined"))
+            {
+                // get the distinct file infos to hash
+                var uniqInfos = new HashSet<string>();
+                var uniqContent = new HashSet<string>();
+
+                using var generator = new HashGenerator();
+
+                foreach (var (fileOrFolder, scanFileContent) in filesAndFolders)
+                {
+                    if (scanFileContent)
+                    {
+                        // add each unique file's contents to the hash
+                        // normalize the content for cr/lf and case-sensitivity
+                        if (uniqContent.Add(fileOrFolder.FullName))
+                        {
+                            if (File.Exists(fileOrFolder.FullName) == false) continue;
+                            var content = RemoveCrLf(File.ReadAllText(fileOrFolder.FullName));
+                            generator.AddCaseInsensitiveString(content);
+                        }
+                    }
+                    else
+                    {
+                        // add each unique folder/file to the hash
+                        if (uniqInfos.Add(fileOrFolder.FullName))
+                        {
+                            generator.AddFileSystemItem(fileOrFolder);
+                        }
+                    }
+                }
+                return generator.GenerateHash();
+            }
+        }
+
+        // fast! (yes, according to benchmarks)
+        private static string RemoveCrLf(string s)
+        {
+            var buffer = new char[s.Length];
+            var count = 0;
+            // ReSharper disable once ForCanBeConvertedToForeach - no!
+            for (var i = 0; i < s.Length; i++)
+            {
+                if (s[i] != '\r' && s[i] != '\n')
+                    buffer[count++] = s[i];
+            }
+            return new string(buffer, 0, count);
+        }
+    }
+}

src/Umbraco.Core/Composing/RuntimeHashPaths.cs

@@ -0,0 +1,20 @@
+using System.Collections.Generic;
+using System.IO;
+
+namespace Umbraco.Core.Composing
+{
+    /// <summary>
+    /// Paths used to determine the <see cref="IRuntimeHash"/>
+    /// </summary>
+    public sealed class RuntimeHashPaths
+    {
+        private readonly List<DirectoryInfo> _paths = new List<DirectoryInfo>();
+        private readonly Dictionary<FileInfo, bool> _files = new Dictionary<FileInfo, bool>();
+
+        public void AddFolder(DirectoryInfo pathInfo) => _paths.Add(pathInfo);
+        public void AddFile(FileInfo fileInfo, bool scanFileContent = false) => _files.Add(fileInfo, scanFileContent);
+
+        public IEnumerable<DirectoryInfo> GetFolders() => _paths;
+        public IReadOnlyDictionary<FileInfo, bool> GetFiles() => _files;
+    }
+}

src/Umbraco.Core/Composing/TypeFinder.cs

@@ -1,106 +1,37 @@
 using System;
 using System.Collections.Concurrent;
 using System.Collections.Generic;
-using System.Configuration;
-using System.IO;
 using System.Linq;
 using System.Reflection;
 using System.Security;
 using System.Text;
 using Umbraco.Core.Configuration.UmbracoSettings;
-using Umbraco.Core.Exceptions;
-using Umbraco.Core.IO;
 using Umbraco.Core.Logging;
 
 namespace Umbraco.Core.Composing
 {
+
     /// <inheritdoc cref="ITypeFinder"/>
     public class TypeFinder : ITypeFinder
     {
         private readonly ILogger _logger;
-
-        public TypeFinder(ILogger logger, ITypeFinderConfig typeFinderConfig = null)
-        {
-            _logger = logger ?? throw new ArgumentNullException(nameof(logger));
-            _assembliesAcceptingLoadExceptions = typeFinderConfig?.AssembliesAcceptingLoadExceptions.Where(x => !x.IsNullOrWhiteSpace()).ToArray() ?? Array.Empty<string>();
-            _allAssemblies = new Lazy<HashSet<Assembly>>(() =>
-            {
-                HashSet<Assembly> assemblies = null;
-                try
-                {
-                    //NOTE: we cannot use AppDomain.CurrentDomain.GetAssemblies() because this only returns assemblies that have
-                    // already been loaded in to the app domain, instead we will look directly into the bin folder and load each one.
-                    var binFolder = GetRootDirectorySafe();
-                    var binAssemblyFiles = Directory.GetFiles(binFolder, "*.dll", SearchOption.TopDirectoryOnly).ToList();
-                    //var binFolder = Assembly.GetExecutingAssembly().GetAssemblyFile().Directory;
-                    //var binAssemblyFiles = Directory.GetFiles(binFolder.FullName, "*.dll", SearchOption.TopDirectoryOnly).ToList();
-                    assemblies = new HashSet<Assembly>();
-                    foreach (var a in binAssemblyFiles)
-                    {
-                        try
-                        {
-                            var assName = AssemblyName.GetAssemblyName(a);
-                            var ass = Assembly.Load(assName);
-                            assemblies.Add(ass);
-                        }
-                        catch (Exception e)
-                        {
-                            if (e is SecurityException || e is BadImageFormatException)
-                            {
-                                //swallow these exceptions
-                            }
-                            else
-                            {
-                                throw;
-                            }
-                        }
-                    }
-
-                    //Since we are only loading in the /bin assemblies above, we will also load in anything that's already loaded (which will include gac items)
-                    foreach (var a in AppDomain.CurrentDomain.GetAssemblies())
-                    {
-                        assemblies.Add(a);
-                    }
-                }
-                catch (InvalidOperationException e)
-                {
-                    if (e.InnerException is SecurityException == false)
-                        throw;
-                }
-
-                return assemblies;
-            });
-        }
-
-        //Lazy access to the all assemblies list
-        private readonly Lazy<HashSet<Assembly>> _allAssemblies;
+        private readonly IAssemblyProvider _assemblyProvider;
+        private readonly IRuntimeHash _runtimeHash;
         private volatile HashSet<Assembly> _localFilteredAssemblyCache;
         private readonly object _localFilteredAssemblyCacheLocker = new object();
         private readonly List<string> _notifiedLoadExceptionAssemblies = new List<string>();
-        private static readonly ConcurrentDictionary<string, Type> TypeNamesCache= new ConcurrentDictionary<string, Type>();
-        private string _rootDir = "";
+        private static readonly ConcurrentDictionary<string, Type> TypeNamesCache = new ConcurrentDictionary<string, Type>();
         private readonly string[] _assembliesAcceptingLoadExceptions;
 
-        // FIXME - this is only an interim change, once the IIOHelper stuff is merged we should use IIOHelper here
-        private string GetRootDirectorySafe()
+        // used for benchmark tests
+        internal bool QueryWithReferencingAssemblies = true;
+
+        public TypeFinder(ILogger logger, IAssemblyProvider assemblyProvider, IRuntimeHash runtimeHash, ITypeFinderConfig typeFinderConfig = null)
         {
-            if (string.IsNullOrEmpty(_rootDir) == false)
-            {
-                return _rootDir;
-            }
-
-            var codeBase = Assembly.GetExecutingAssembly().CodeBase;
-            var uri = new Uri(codeBase);
-            var path = uri.LocalPath;
-            var baseDirectory = Path.GetDirectoryName(path);
-            if (string.IsNullOrEmpty(baseDirectory))
-                throw new PanicException("No root directory could be resolved.");
-
-            _rootDir = baseDirectory.Contains("bin")
-                ? baseDirectory.Substring(0, baseDirectory.LastIndexOf("bin", StringComparison.OrdinalIgnoreCase) - 1)
-                : baseDirectory;
-
-            return _rootDir;
+            _logger = logger ?? throw new ArgumentNullException(nameof(logger));
+            _assemblyProvider = assemblyProvider;
+            _runtimeHash = runtimeHash;
+            _assembliesAcceptingLoadExceptions = typeFinderConfig?.AssembliesAcceptingLoadExceptions.Where(x => !x.IsNullOrWhiteSpace()).ToArray() ?? Array.Empty<string>();           
         }
 
         private bool AcceptsLoadExceptions(Assembly a)
@@ -119,22 +50,8 @@ namespace Umbraco.Core.Composing
             });
         }
 
-        /// <summary>
-        /// lazily load a reference to all assemblies and only local assemblies.
-        /// This is a modified version of: http://www.dominicpettifer.co.uk/Blog/44/how-to-get-a-reference-to-all-assemblies-in-the--bin-folder
-        /// </summary>
-        /// <remarks>
-        /// We do this because we cannot use AppDomain.Current.GetAssemblies() as this will return only assemblies that have been
-        /// loaded in the CLR, not all assemblies.
-        /// See these threads:
-        /// http://issues.umbraco.org/issue/U5-198
-        /// http://stackoverflow.com/questions/3552223/asp-net-appdomain-currentdomain-getassemblies-assemblies-missing-after-app
-        /// http://stackoverflow.com/questions/2477787/difference-between-appdomain-getassemblies-and-buildmanager-getreferencedassembl
-        /// </remarks>
-        private IEnumerable<Assembly> GetAllAssemblies()
-        {
-            return _allAssemblies.Value;
-        }
+
+        private IEnumerable<Assembly> GetAllAssemblies() => _assemblyProvider.Assemblies;
 
         /// <inheritdoc />
         public IEnumerable<Assembly> AssembliesToScan
@@ -181,7 +98,10 @@ namespace Umbraco.Core.Composing
         /// NOTE the comma vs period... comma delimits the name in an Assembly FullName property so if it ends with comma then its an exact name match
         /// NOTE this means that "foo." will NOT exclude "foo.dll" but only "foo.*.dll"
         /// </remarks>
-        private static readonly string[] KnownAssemblyExclusionFilter = {
+        internal static readonly string[] KnownAssemblyExclusionFilter = {
+            "mscorlib,",
+            "netstandard,",
+            "System,",
             "Antlr3.",
             "AutoMapper,",
             "AutoMapper.",
@@ -228,7 +148,14 @@ namespace Umbraco.Core.Composing
             "WebDriver,",
             "itextsharp,",
             "mscorlib,",
-            "nunit.framework,",
+            "NUnit,",
+            "NUnit.",
+            "NUnit3.",
+            "Selenium.",
+            "ImageProcessor",
+            "MiniProfiler.",
+            "Owin,",
+            "SQLite",
         };
 
         /// <summary>
@@ -283,6 +210,9 @@ namespace Umbraco.Core.Composing
             return GetClassesWithAttribute(attributeType, assemblyList, onlyConcreteClasses);
         }
 
+        /// <inheritdoc />
+        public string GetRuntimeHash() => _runtimeHash.GetHashValue();
+
         /// <summary>
         /// Returns a Type for the string type name
         /// </summary>
@@ -290,6 +220,11 @@ namespace Umbraco.Core.Composing
         /// <returns></returns>
         public virtual Type GetTypeByName(string name)
         {
+
+            //NOTE: This will not find types in dynamic assemblies unless those assemblies are already loaded
+            //into the appdomain.
+
+
             // This is exactly what the BuildManager does, if the type is an assembly qualified type
             // name it will find it.
             if (TypeNameContainsAssembly(name))
@@ -340,18 +275,24 @@ namespace Umbraco.Core.Composing
             var stack = new Stack<Assembly>();
             stack.Push(attributeType.Assembly);
 
+            if (!QueryWithReferencingAssemblies)
+            {
+                foreach (var a in candidateAssemblies)
+                    stack.Push(a);
+            }
+
             while (stack.Count > 0)
             {
                 var assembly = stack.Pop();
 
-                Type[] assemblyTypes = null;
+                IReadOnlyList<Type> assemblyTypes = null;
                 if (assembly != attributeType.Assembly || attributeAssemblyIsCandidate)
                 {
                     // get all assembly types that can be assigned to baseType
                     try
                     {
                         assemblyTypes = GetTypesWithFormattedException(assembly)
-                            .ToArray(); // in try block
+                            .ToList(); // in try block
                     }
                     catch (TypeLoadException ex)
                     {
@@ -371,10 +312,13 @@ namespace Umbraco.Core.Composing
                 if (assembly != attributeType.Assembly && assemblyTypes.Where(attributeType.IsAssignableFrom).Any() == false)
                     continue;
 
-                foreach (var referencing in TypeHelper.GetReferencingAssemblies(assembly, candidateAssemblies))
+                if (QueryWithReferencingAssemblies)
                 {
-                    candidateAssemblies.Remove(referencing);
-                    stack.Push(referencing);
+                    foreach (var referencing in TypeHelper.GetReferencingAssemblies(assembly, candidateAssemblies))
+                    {
+                        candidateAssemblies.Remove(referencing);
+                        stack.Push(referencing);
+                    }
                 }
             }
 
@@ -405,19 +349,25 @@ namespace Umbraco.Core.Composing
             var stack = new Stack<Assembly>();
             stack.Push(baseType.Assembly);
 
+            if (!QueryWithReferencingAssemblies)
+            {
+                foreach (var a in candidateAssemblies)
+                    stack.Push(a);
+            }
+
             while (stack.Count > 0)
             {
                 var assembly = stack.Pop();
 
                 // get all assembly types that can be assigned to baseType
-                Type[] assemblyTypes = null;
+                IReadOnlyList<Type> assemblyTypes = null;
                 if (assembly != baseType.Assembly || baseTypeAssemblyIsCandidate)
                 {
                     try
                     {
                         assemblyTypes = GetTypesWithFormattedException(assembly)
                             .Where(baseType.IsAssignableFrom)
-                            .ToArray(); // in try block
+                            .ToList(); // in try block
                     }
                     catch (TypeLoadException ex)
                     {
@@ -437,10 +387,13 @@ namespace Umbraco.Core.Composing
                 if (assembly != baseType.Assembly && assemblyTypes.All(x => x.IsSealed))
                     continue;
 
-                foreach (var referencing in TypeHelper.GetReferencingAssemblies(assembly, candidateAssemblies))
+                if (QueryWithReferencingAssemblies)
                 {
-                    candidateAssemblies.Remove(referencing);
-                    stack.Push(referencing);
+                    foreach (var referencing in TypeHelper.GetReferencingAssemblies(assembly, candidateAssemblies))
+                    {
+                        candidateAssemblies.Remove(referencing);
+                        stack.Push(referencing);
+                    }
                 }
             }
 
@@ -522,6 +475,5 @@ namespace Umbraco.Core.Composing
 
         #endregion
 
-
     }
 }