1 files changed, 71 insertions, 0 deletions
diff --git a/LibMatrix.Federation/XMatrixAuthorizationScheme.cs b/LibMatrix.Federation/XMatrixAuthorizationScheme.cs
new file mode 100644
index 0000000..fc402b7
--- /dev/null
+++ b/LibMatrix.Federation/XMatrixAuthorizationScheme.cs
@@ -0,0 +1,71 @@
+using System.Net;
+using System.Net.Http.Headers;
+using System.Text.Json.Nodes;
+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());
+            }
+
+            return new() {
+                Destination = "",
+                Key = "",
+                Origin = "",
+                Signature = ""
+            };
+        }
+
+        public string ToHeaderValue() => $"{Scheme} origin=\"{Origin}\", destination=\"{Destination}\", key=\"{Key}\", sig=\"{Signature}\"";
+    }
+
+    public class XMatrixRequestSignature {
+        [JsonPropertyName("method")]
+        public required string Method { get; set; }
+
+        [JsonPropertyName("uri")]
+        public required string Uri { get; set; }
+
+        [JsonPropertyName("origin")]
+        public required string OriginServerName { get; set; }
+
+        [JsonPropertyName("destination")]
+        public required string DestinationServerName { get; set; }
+
+        [JsonPropertyName("content"), JsonIgnore(Condition = JsonIgnoreCondition.WhenWritingDefault)]
+        public JsonObject? Content { get; set; }
+    }
+}
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