From 390857e06525941dcebb50a19c501d790baf7fb4 Mon Sep 17 00:00:00 2001
From: Gary Sharp <garypsharp@hotmail.com>
Date: Wed, 25 Sep 2024 18:16:32 +1000
Subject: [PATCH] attempt to preserve IIS bindings so future installations can
 restore them

---
 Disco.Services/Disco.Services.csproj          |  6 ++
 .../Interop/IIS/PreserveIisBindingsTask.cs    | 79 +++++++++++++++++++
 Disco.sln                                     |  4 +
 3 files changed, 89 insertions(+)
 create mode 100644 Disco.Services/Interop/IIS/PreserveIisBindingsTask.cs

diff --git a/Disco.Services/Disco.Services.csproj b/Disco.Services/Disco.Services.csproj
index 78372818..7e22a1a9 100644
--- a/Disco.Services/Disco.Services.csproj
+++ b/Disco.Services/Disco.Services.csproj
@@ -62,6 +62,11 @@
     <Reference Include="Microsoft.Owin.Security, Version=4.2.2.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35, processorArchitecture=MSIL">
       <HintPath>..\packages\Microsoft.Owin.Security.4.2.2\lib\net45\Microsoft.Owin.Security.dll</HintPath>
     </Reference>
+    <Reference Include="Microsoft.Web.Administration, Version=7.9.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35, processorArchitecture=MSIL">
+      <SpecificVersion>False</SpecificVersion>
+      <HintPath>..\..\..\Installer\Microsoft.Web.Administration.dll</HintPath>
+      <Private>False</Private>
+    </Reference>
     <Reference Include="Microsoft.Web.Infrastructure, Version=1.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35, processorArchitecture=MSIL">
       <Private>True</Private>
       <HintPath>..\packages\Microsoft.Web.Infrastructure.1.0.0.0\lib\net40\Microsoft.Web.Infrastructure.dll</HintPath>
@@ -371,6 +376,7 @@
     <Compile Include="Interop\DiscoServices\LicenseValidationTask.cs" />
     <Compile Include="Interop\DiscoServices\PluginLibrary.cs" />
     <Compile Include="Interop\DiscoServices\PluginLibraryUpdateTask.cs" />
+    <Compile Include="Interop\IIS\PreserveIisBindingsTask.cs" />
     <Compile Include="Interop\MimeTypes.cs" />
     <Compile Include="Interop\VicEduDept\VicSmart.cs" />
     <Compile Include="Interop\DiscoServices\UpdateQuery.cs" />
diff --git a/Disco.Services/Interop/IIS/PreserveIisBindingsTask.cs b/Disco.Services/Interop/IIS/PreserveIisBindingsTask.cs
new file mode 100644
index 00000000..10a3465c
--- /dev/null
+++ b/Disco.Services/Interop/IIS/PreserveIisBindingsTask.cs
@@ -0,0 +1,79 @@
+using Disco.Data.Repository;
+using Disco.Services.Tasks;
+using Microsoft.Web.Administration;
+using Microsoft.Win32;
+using Quartz;
+using System;
+using System.Linq;
+using System.Text;
+
+namespace Disco.Services.Interop.DiscoServices
+{
+    public class PreserveIisBindingsTask : ScheduledTask
+    {
+        private const string DiscoRegistryKey = @"SOFTWARE\Disco";
+
+        public override string TaskName { get { return "Disco ICT - Preserve IIS Bindings"; } }
+        public override bool SingleInstanceTask { get { return true; } }
+        public override bool CancelInitiallySupported { get { return false; } }
+
+        public override void InitalizeScheduledTask(DiscoDataContext Database)
+        {
+            TriggerBuilder triggerBuilder = TriggerBuilder.Create()
+                .StartAt(DateTimeOffset.Now.AddMinutes(10));
+
+            ScheduleTask(triggerBuilder);
+        }
+
+        protected override void ExecuteTask()
+        {
+            // retrieve IIS bindings
+            var bindings = GetWebsiteBindings();
+
+            if (bindings == null || !bindings.Any())
+            {
+                ScheduledTasksLog.LogScheduledTaskInformation(Status.TaskName, Status.SessionId, "Bindings for IIS Web Site 'Disco' not found");
+                return;
+            }
+
+            using (var key = Registry.LocalMachine.CreateSubKey(DiscoRegistryKey))
+            {
+                key.SetValue("WebsiteBindings", bindings, RegistryValueKind.MultiString);
+            }
+        }
+
+        private string[] GetWebsiteBindings()
+        {
+            using (var manager = new ServerManager())
+            {
+                var site = manager.Sites["Disco"];
+
+                if (site == null)
+                    return null;
+
+                var bindings = site.Bindings;
+                var sb = new StringBuilder();
+                var result = new string[bindings.Count];
+                for (int i = 0; i < bindings.Count; i++)
+                {
+                    var binding = bindings[i];
+                    sb.Append(binding.BindingInformation);
+                    sb.Append(';');
+                    sb.Append(binding.Protocol);
+                    if (string.Equals(binding.Protocol, "https", StringComparison.OrdinalIgnoreCase))
+                    {
+                        sb.Append(';');
+                        sb.Append(Convert.ToBase64String(binding.CertificateHash));
+                        sb.Append(';');
+                        sb.Append(binding.CertificateStoreName);
+                    }
+
+                    result[i] = sb.ToString();
+                    sb.Clear();
+                }
+
+                return result;
+            }
+        }
+    }
+}
\ No newline at end of file
diff --git a/Disco.sln b/Disco.sln
index b653e5b8..23aad660 100644
--- a/Disco.sln
+++ b/Disco.sln
@@ -16,6 +16,10 @@ EndProject
 Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "Disco.Services", "Disco.Services\Disco.Services.csproj", "{B80A737F-BD6A-4986-9182-DD7B932BD950}"
 EndProject
 Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "Disco.Web", "Disco.Web\Disco.Web.csproj", "{241F4F43-6ACB-482D-8CBF-8F4E4B4DB0FE}"
+	ProjectSection(ProjectDependencies) = postProject
+		{15BD9561-A3C7-4608-9F7E-F1A1CFB60055} = {15BD9561-A3C7-4608-9F7E-F1A1CFB60055}
+		{D6B85A86-0FAA-4B04-BC9E-D01A08C03387} = {D6B85A86-0FAA-4B04-BC9E-D01A08C03387}
+	EndProjectSection
 EndProject
 Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "Disco.Client", "Disco.Client\Disco.Client.csproj", "{D6B85A86-0FAA-4B04-BC9E-D01A08C03387}"
 EndProject