Remove existing URL ACLs to avoid conflicts

New: Choose IP address to listen on (advanced)
Fixed: Check if URL has been registered with Windows before trying to register it

src/NzbDrone.Api/Config/HostConfigModule.cs

@@ -1,5 +1,4 @@
-using System;
-using System.Linq;
+using System.Linq;
 using System.Reflection;
 using FluentValidation;
 using NzbDrone.Common.EnvironmentInfo;
@@ -26,8 +25,6 @@ namespace NzbDrone.Api.Config
 
             SharedValidator.RuleFor(c => c.Branch).NotEmpty().WithMessage("Branch name is required, 'master' is the default");        
             SharedValidator.RuleFor(c => c.Port).ValidPort();
-            SharedValidator.RuleFor(c => c.BindAddress).ValidIp4Address().When(c => c.BindAddress != "*");
-            SharedValidator.RuleFor(c => c.Port).InclusiveBetween(1, 65535);
 
             SharedValidator.RuleFor(c => c.Username).NotEmpty().When(c => c.AuthenticationEnabled);
             SharedValidator.RuleFor(c => c.Password).NotEmpty().When(c => c.AuthenticationEnabled);
@@ -36,6 +33,11 @@ namespace NzbDrone.Api.Config
             SharedValidator.RuleFor(c => c.SslCertHash).NotEmpty().When(c => c.EnableSsl && OsInfo.IsWindows);
 
             SharedValidator.RuleFor(c => c.UpdateScriptPath).IsValidPath().When(c => c.UpdateMechanism == UpdateMechanism.Script);
+
+            SharedValidator.RuleFor(c => c.BindAddress)
+                           .ValidIp4Address()
+                           .NotListenAllIp4Address()
+                           .When(c => c.BindAddress != "*");
         }
 
         private HostConfigResource GetHostConfig()

src/NzbDrone.Core/NzbDrone.Core.csproj

@@ -841,6 +841,7 @@
     <Compile Include="Update\UpdateVerification.cs" />
     <Compile Include="Update\UpdateVerificationFailedException.cs" />
     <Compile Include="Validation\FolderValidator.cs" />
+    <Compile Include="Validation\IpValidation.cs" />
     <Compile Include="Validation\LangaugeValidator.cs" />
     <Compile Include="Validation\NzbDroneValidationFailure.cs" />
     <Compile Include="Validation\Paths\DroneFactoryValidator.cs" />

src/NzbDrone.Core/Validation/IpValidation.cs

@@ -0,0 +1,35 @@
+using System.Net;
+using System.Net.Sockets;
+using FluentValidation;
+using FluentValidation.Validators;
+
+namespace NzbDrone.Core.Validation
+{
+    public static class IpValidation
+    {
+        public static IRuleBuilderOptions<T, string> ValidIp4Address<T>(this IRuleBuilder<T, string> ruleBuilder)
+        {
+            return ruleBuilder.Must(x =>
+            {
+                IPAddress parsedAddress;
+
+                if (!IPAddress.TryParse(x, out parsedAddress))
+                {
+                    return false;
+                }
+
+                if (parsedAddress.Equals(IPAddress.Parse("255.255.255.255")))
+                {
+                    return false;
+                }
+
+                return parsedAddress.AddressFamily == AddressFamily.InterNetwork;
+            }).WithMessage("Must be a valid IPv4 Address");
+        }
+
+        public static IRuleBuilderOptions<T, string> NotListenAllIp4Address<T>(this IRuleBuilder<T, string> ruleBuilder)
+        {
+            return ruleBuilder.SetValidator(new RegularExpressionValidator(@"^(?!0\.0\.0\.0)")).WithMessage("Use * instead of 0.0.0.0");
+        }
+    }
+}

src/NzbDrone.Core/Validation/RuleBuilderExtensions.cs

@@ -1,6 +1,4 @@
-using System.Net;
-using System.Net.Sockets;
-using System.Text.RegularExpressions;
+using System.Text.RegularExpressions;
 using FluentValidation;
 using FluentValidation.Validators;
 using NzbDrone.Core.Parser;
@@ -35,21 +33,6 @@ namespace NzbDrone.Core.Validation
             return ruleBuilder.SetValidator(new InclusiveBetweenValidator(1, 65535));
         }
 
-        public static IRuleBuilderOptions<T, string> ValidIp4Address<T>(this IRuleBuilder<T, string> ruleBuilder)
-        {
-
-            return ruleBuilder.Must(x =>
-            {
-                IPAddress parsedAddress;
-                if (!IPAddress.TryParse(x, out parsedAddress))
-                {
-                    return false;                    
-                }
-
-                return parsedAddress.AddressFamily == AddressFamily.InterNetwork;
-            });
-        }
-
         public static IRuleBuilderOptions<T, Language> ValidLanguage<T>(this IRuleBuilder<T, Language> ruleBuilder)
         {
             return ruleBuilder.SetValidator(new LangaugeValidator());

src/NzbDrone.Host/AccessControl/UrlAcl.cs

@@ -0,0 +1,20 @@
+using System;
+
+namespace NzbDrone.Host.AccessControl
+{
+    public class UrlAcl
+    {
+        public string Scheme { get; set; }
+        public string Address { get; set; }
+        public int Port { get; set; }
+        public string UrlBase { get; set; }
+
+        public string Url
+        {
+            get
+            {
+                return String.Format("{0}://{1}:{2}/{3}", Scheme, Address, Port, UrlBase);
+            }
+        }
+    }
+}

src/NzbDrone.Host/AccessControl/UrlAclAdapter.cs

@@ -1,15 +1,18 @@
 using System;
 using System.Collections.Generic;
 using System.Linq;
+using System.Text.RegularExpressions;
 using NLog;
+using NzbDrone.Common;
 using NzbDrone.Common.EnvironmentInfo;
+using NzbDrone.Common.Extensions;
 using NzbDrone.Core.Configuration;
 
 namespace NzbDrone.Host.AccessControl
 {
     public interface IUrlAclAdapter
     {
-        void ConfigureUrl();
+        void ConfigureUrls();
         List<String> Urls { get; }
     }
 
@@ -20,7 +23,18 @@ namespace NzbDrone.Host.AccessControl
         private readonly IRuntimeInfo _runtimeInfo;
         private readonly Logger _logger;
 
-        public List<String> Urls { get; private set; }
+        public List<String> Urls
+        {
+            get
+            {
+                return InternalUrls.Select(c => c.Url).ToList();
+            }
+        }
+
+        private List<UrlAcl> InternalUrls { get; set; }
+        private List<UrlAcl> RegisteredUrls { get; set; } 
+
+        private static readonly Regex UrlAclRegex = new Regex(@"(?<scheme>https?)\:\/\/(?<address>.+?)\:(?<port>\d+)/(?<urlbase>.+)?", RegexOptions.Compiled | RegexOptions.IgnoreCase);
 
         public UrlAclAdapter(INetshProvider netshProvider,
                              IConfigFileProvider configFileProvider,
@@ -32,20 +46,21 @@ namespace NzbDrone.Host.AccessControl
             _runtimeInfo = runtimeInfo;
             _logger = logger;
 
-            Urls = new List<String>();
+            InternalUrls = new List<UrlAcl>();
+            RegisteredUrls = GetRegisteredUrls();
         }
 
-        public void ConfigureUrl()
+        public void ConfigureUrls()
         {
-            var localHostHttpUrls = BuildUrls("http", "localhost", _configFileProvider.Port);
-            var interfaceHttpUrls = BuildUrls("http", _configFileProvider.BindAddress, _configFileProvider.Port);
+            var localHostHttpUrls = BuildUrlAcls("http", "localhost", _configFileProvider.Port);
+            var interfaceHttpUrls = BuildUrlAcls("http", _configFileProvider.BindAddress, _configFileProvider.Port);
 
-            var localHostHttpsUrls = BuildUrls("https", "localhost", _configFileProvider.SslPort);
-            var interfaceHttpsUrls = BuildUrls("https", _configFileProvider.BindAddress, _configFileProvider.SslPort);
+            var localHostHttpsUrls = BuildUrlAcls("https", "localhost", _configFileProvider.SslPort);
+            var interfaceHttpsUrls = BuildUrlAcls("https", _configFileProvider.BindAddress, _configFileProvider.SslPort);
 
             if (!_configFileProvider.EnableSsl)
             {
-                Urls.Clear();
+                localHostHttpsUrls.Clear();
                 interfaceHttpsUrls.Clear();
             }
 
@@ -54,13 +69,33 @@ namespace NzbDrone.Host.AccessControl
                 var httpUrls = interfaceHttpUrls.All(IsRegistered) ? interfaceHttpUrls : localHostHttpUrls;
                 var httpsUrls = interfaceHttpsUrls.All(IsRegistered) ? interfaceHttpsUrls : localHostHttpsUrls;
 
-                Urls.AddRange(httpUrls);
-                Urls.AddRange(httpsUrls);
+                InternalUrls.AddRange(httpUrls);
+                InternalUrls.AddRange(httpsUrls);
+
+                if (_configFileProvider.BindAddress != "*")
+                {
+                    if (httpUrls.None(c => c.Address.Equals("localhost")))
+                    {
+                        InternalUrls.AddRange(localHostHttpUrls);
+                    }
+
+                    if (httpsUrls.None(c => c.Address.Equals("localhost")))
+                    {
+                        InternalUrls.AddRange(localHostHttpsUrls);
+                    }
+                }
             }
             else
             {
-                Urls.AddRange(interfaceHttpUrls);
-                Urls.AddRange(interfaceHttpsUrls);
+                InternalUrls.AddRange(interfaceHttpUrls);
+                InternalUrls.AddRange(interfaceHttpsUrls);
+
+                //Register localhost URLs so the IP Address doesn't need to be used from the local system
+                if (_configFileProvider.BindAddress != "*")
+                {
+                    InternalUrls.AddRange(localHostHttpUrls);
+                    InternalUrls.AddRange(localHostHttpsUrls);
+                }
 
                 if (OsInfo.IsWindows)
                 {
@@ -71,49 +106,104 @@ namespace NzbDrone.Host.AccessControl
 
         private void RefreshRegistration()
         {
-            if (OsInfo.Version.Major < 6)
-                return;
+            if (OsInfo.Version.Major < 6) return;
 
-            Urls.ForEach(RegisterUrl);
+            foreach (var urlAcl in InternalUrls)
+            {
+                if (IsRegistered(urlAcl) || urlAcl.Address.Equals("localhost")) continue;
+
+                RemoveSimilar(urlAcl);
+                RegisterUrl(urlAcl);
+            }
         }
         
-        private bool IsRegistered(string urlAcl)
+        private bool IsRegistered(UrlAcl urlAcl)
         {
-            var arguments = String.Format("http show urlacl {0}", urlAcl);
+            return RegisteredUrls.Any(c => c.Scheme == urlAcl.Scheme &&
+                                      c.Address == urlAcl.Address &&
+                                      c.Port == urlAcl.Port &&
+                                      c.UrlBase == urlAcl.UrlBase);
+        }
+
+        private List<UrlAcl> GetRegisteredUrls()
+        {
+            var arguments = String.Format("http show urlacl");
             var output = _netshProvider.Run(arguments);
 
-            if (output == null || !output.Standard.Any()) return false;
+            if (output == null || !output.Standard.Any()) return new List<UrlAcl>();
+
+            return output.Standard.Select(line =>
+            {
+                var match = UrlAclRegex.Match(line);
+
+                if (match.Success)
+                {
+                    return new UrlAcl
+                           {
+                               Scheme = match.Groups["scheme"].Value,
+                               Address = match.Groups["address"].Value,
+                               Port = Convert.ToInt32(match.Groups["port"].Value),
+                               UrlBase = match.Groups["urlbase"].Value.Trim()
+                           };
+                }
+
+                return null;
 
-            return output.Standard.Any(line => line.Contains(urlAcl));
+            }).Where(r => r != null).ToList();
         }
 
-        private void RegisterUrl(string urlAcl)
+        private void RegisterUrl(UrlAcl urlAcl)
         {
-            var arguments = String.Format("http add urlacl {0} sddl=D:(A;;GX;;;S-1-1-0)", urlAcl);
+            var arguments = String.Format("http add urlacl {0} sddl=D:(A;;GX;;;S-1-1-0)", urlAcl.Url);
             _netshProvider.Run(arguments);
         }
 
-        private string BuildUrl(string protocol, string url, int port, string urlBase)
+        private void RemoveSimilar(UrlAcl urlAcl)
         {
-            var result = protocol + "://" + url + ":" + port;
-            result += String.IsNullOrEmpty(urlBase) ? "/" : urlBase + "/";
+            var similar = RegisteredUrls.Where(c => c.Scheme == urlAcl.Scheme &&
+                                                    InternalUrls.None(x => x.Address == c.Address) &&
+                                                    c.Port == urlAcl.Port &&
+                                                    c.UrlBase == urlAcl.UrlBase);
 
-            return result;
+            foreach (var s in similar)
+            {
+                UnregisterUrl(s);
+            }
         }
 
-        private List<String> BuildUrls(string protocol, string url, int port)
+        private void UnregisterUrl(UrlAcl urlAcl)
         {
-            var urls = new List<String>();
+            _logger.Trace("Removing URL ACL {0}", urlAcl.Url);
+
+            var arguments = String.Format("http delete urlacl {0}", urlAcl.Url);
+            _netshProvider.Run(arguments);
+        }
+
+        private List<UrlAcl> BuildUrlAcls(string scheme, string address, int port)
+        {
+            var urlAcls = new List<UrlAcl>();
             var urlBase = _configFileProvider.UrlBase;
 
-            if (!String.IsNullOrEmpty(urlBase))
+            if (urlBase.IsNotNullOrWhiteSpace())
             {
-                urls.Add(BuildUrl(protocol, url, port, urlBase));
+                urlAcls.Add(new UrlAcl
+                         {
+                             Scheme = scheme,
+                             Address = address,
+                             Port = port,
+                             UrlBase = urlBase.Trim('/') + "/"
+                         });
             }
 
-            urls.Add(BuildUrl(protocol, url, port, ""));
+            urlAcls.Add(new UrlAcl
+            {
+                Scheme = scheme,
+                Address = address,
+                Port = port,
+                UrlBase = String.Empty
+            });
 
-            return urls;
+            return urlAcls;
         }
     }
 }

src/NzbDrone.Host/NzbDrone.Host.csproj

@@ -101,6 +101,7 @@
     </Compile>
     <Compile Include="AccessControl\FirewallAdapter.cs" />
     <Compile Include="AccessControl\NetshProvider.cs" />
+    <Compile Include="AccessControl\UrlAcl.cs" />
     <Compile Include="AccessControl\SslAdapter.cs" />
     <Compile Include="AccessControl\UrlAclAdapter.cs" />
     <Compile Include="ApplicationModes.cs" />

src/NzbDrone.Host/Owin/OwinHostController.cs

@@ -45,7 +45,7 @@ namespace NzbDrone.Host.Owin
                 }
             }
 
-            _urlAclAdapter.ConfigureUrl();
+            _urlAclAdapter.ConfigureUrls();
 
             _logger.Info("Listening on the following URLs:");
             foreach (var url in _urlAclAdapter.Urls)

src/UI/Settings/General/GeneralViewTemplate.hbs

@@ -7,6 +7,7 @@
 
             <div class="col-sm-1 col-sm-push-4 help-inline">
                 <i class="icon-nd-form-warning" title="Requires restart to take effect" />
+                <i class="icon-nd-form-info" title="Valid IP4 address or '*' for all interfaces"/>
             </div>
 
             <div class="col-sm-4 col-sm-pull-1">