From 0e79e4e17903528d183cc55f6a345029b8203eed Mon Sep 17 00:00:00 2001
From: Rory& <root@rory.gay>
Date: Tue, 17 Jun 2025 14:20:27 +0200
Subject: Start of federation code

---
 .../AuthenticatedFederationClient.cs               | 14 +++++++
 LibMatrix.Federation/LibMatrix.Federation.csproj   | 19 +++++++++
 LibMatrix.Federation/XMatrixAuthorizationScheme.cs | 47 ++++++++++++++++++++++
 3 files changed, 80 insertions(+)
 create mode 100644 LibMatrix.Federation/AuthenticatedFederationClient.cs
 create mode 100644 LibMatrix.Federation/LibMatrix.Federation.csproj
 create mode 100644 LibMatrix.Federation/XMatrixAuthorizationScheme.cs

(limited to 'LibMatrix.Federation')

diff --git a/LibMatrix.Federation/AuthenticatedFederationClient.cs b/LibMatrix.Federation/AuthenticatedFederationClient.cs
new file mode 100644
index 0000000..b66d2cb
--- /dev/null
+++ b/LibMatrix.Federation/AuthenticatedFederationClient.cs
@@ -0,0 +1,14 @@
+using LibMatrix.Homeservers;
+
+namespace LibMatrix.Federation;
+
+public class AuthenticatedFederationClient : FederationClient {
+    public class AuthenticatedFederationConfiguration {
+        
+    }
+    public AuthenticatedFederationClient(string federationEndpoint, AuthenticatedFederationConfiguration config, string? proxy = null) : base(federationEndpoint, proxy)
+    {
+        
+    }
+    
+}
\ No newline at end of file
diff --git a/LibMatrix.Federation/LibMatrix.Federation.csproj b/LibMatrix.Federation/LibMatrix.Federation.csproj
new file mode 100644
index 0000000..78086bb
--- /dev/null
+++ b/LibMatrix.Federation/LibMatrix.Federation.csproj
@@ -0,0 +1,19 @@
+<Project Sdk="Microsoft.NET.Sdk">
+
+    <PropertyGroup>
+        <TargetFramework>net9.0</TargetFramework>
+        <LangVersion>preview</LangVersion>
+        <ImplicitUsings>enable</ImplicitUsings>
+        <Nullable>enable</Nullable>
+    </PropertyGroup>
+
+    <ItemGroup>
+      <ProjectReference Include="..\LibMatrix\LibMatrix.csproj" />
+    </ItemGroup>
+
+    <ItemGroup>
+      <PackageReference Include="BouncyCastle.Cryptography" Version="2.6.1" />
+      <PackageReference Include="Microsoft.Extensions.Primitives" Version="10.0.0-preview.5.25277.114" />
+    </ItemGroup>
+
+</Project>
diff --git a/LibMatrix.Federation/XMatrixAuthorizationScheme.cs b/LibMatrix.Federation/XMatrixAuthorizationScheme.cs
new file mode 100644
index 0000000..cb349c9
--- /dev/null
+++ b/LibMatrix.Federation/XMatrixAuthorizationScheme.cs
@@ -0,0 +1,47 @@
+using System.Net;
+using System.Net.Http.Headers;
+using System.Text.Json.Serialization;
+using ArcaneLibs.Extensions;
+using Microsoft.Extensions.Primitives;
+
+namespace LibMatrix.Federation;
+
+public class XMatrixAuthorizationScheme {
+    public class XMatrixAuthorizationHeader {
+        public const string Scheme = "X-Matrix";
+
+        [JsonPropertyName("origin")]
+        public required string Origin { get; set; }
+
+        [JsonPropertyName("destination")]
+        public required string Destination { get; set; }
+
+        [JsonPropertyName("key")]
+        public required string Key { get; set; }
+
+        [JsonPropertyName("sig")]
+        public required string Signature { get; set; }
+
+        public static XMatrixAuthorizationHeader FromHeaderValue(AuthenticationHeaderValue header) {
+            if (header.Scheme != Scheme)
+                throw new LibMatrixException() {
+                    Error = $"Expected authentication scheme of {Scheme}, got {header.Scheme}",
+                    ErrorCode = MatrixException.ErrorCodes.M_UNAUTHORIZED
+                };
+            
+            if (string.IsNullOrWhiteSpace(header.Parameter))
+                throw new LibMatrixException() {
+                    Error = $"Expected authentication header to have a value.",
+                    ErrorCode = MatrixException.ErrorCodes.M_UNAUTHORIZED
+                };
+
+            var headerValues = new StringValues(header.Parameter);
+            foreach (var value in headerValues)
+            {
+                Console.WriteLine(headerValues.ToJson());
+            }
+        }
+
+        public string ToHeaderValue() { }
+    }
+}
\ No newline at end of file
-- 
cgit 1.5.1