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

---
 LibMatrix.Federation/XMatrixAuthorizationScheme.cs | 47 ++++++++++++++++++++++
 1 file changed, 47 insertions(+)
 create mode 100644 LibMatrix.Federation/XMatrixAuthorizationScheme.cs

(limited to 'LibMatrix.Federation/XMatrixAuthorizationScheme.cs')

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