From 49bb14a7f0906b6e88b7613ac1bc508d1709c06d Mon Sep 17 00:00:00 2001
From: Rory& <root@rory.gay>
Date: Fri, 28 Feb 2025 02:24:24 +0100
Subject: Well known resolver rewrite work

---
 .../WellKnownResolvers/ClientWellKnownResolver.cs  | 53 +++++++++++++++++++++
 .../WellKnownResolvers/SupportWellKnownResolver.cs | 54 ++++++++++++++++++++++
 2 files changed, 107 insertions(+)
 create mode 100644 LibMatrix/Services/WellKnownResolvers/ClientWellKnownResolver.cs
 create mode 100644 LibMatrix/Services/WellKnownResolvers/SupportWellKnownResolver.cs

(limited to 'LibMatrix/Services/WellKnownResolvers')

diff --git a/LibMatrix/Services/WellKnownResolvers/ClientWellKnownResolver.cs b/LibMatrix/Services/WellKnownResolvers/ClientWellKnownResolver.cs
new file mode 100644
index 0000000..d4d0166
--- /dev/null
+++ b/LibMatrix/Services/WellKnownResolvers/ClientWellKnownResolver.cs
@@ -0,0 +1,53 @@
+using System.Text.Json.Serialization;
+using ArcaneLibs.Collections;
+using LibMatrix.Extensions;
+using Microsoft.Extensions.Logging;
+
+namespace LibMatrix.Services.WellKnownResolvers;
+
+public class ClientWellKnownResolver(ILogger<ClientWellKnownResolver> logger) {
+    private static readonly SemaphoreCache<WellKnownResolutionResult> ClientWellKnownCache = new() {
+        StoreNulls = false
+    };
+    private static readonly MatrixHttpClient HttpClient = new();
+
+    public Task<WellKnownResolutionResult> TryResolveClientWellKnown(string homeserver) {
+        return ClientWellKnownCache.TryGetOrAdd(homeserver, async () => {
+            logger.LogTrace($"Resolving client well-known: {homeserver}");
+            if ((await TryGetClientWellKnownFromHttps(homeserver)) is { } clientWellKnown)
+                return new() {
+                    Source = WellKnownResolverService.WellKnownSource.Https,
+                    WellKnown = clientWellKnown
+                };
+
+            return default!;
+        });
+    }
+
+    private async Task<ClientWellKnown?> TryGetClientWellKnownFromHttps(string homeserver) {
+        try {
+            return await HttpClient.TryGetFromJsonAsync<ClientWellKnown>($"https://{homeserver}/.well-known/matrix/client");
+        }
+        catch {
+            return null;
+        }
+    }
+
+
+
+    public class ClientWellKnown {
+        [JsonPropertyName("m.homeserver")]
+        public required WellKnownHomeserver Homeserver { get; set; }
+
+        public class WellKnownHomeserver {
+            [JsonPropertyName("base_url")]
+            public required string BaseUrl { get; set; }
+        }
+    }
+    
+    public struct WellKnownResolutionResult {
+        public WellKnownResolverService.WellKnownSource Source { get; set; }
+        public ClientWellKnown WellKnown { get; set; }
+        public List<WellKnownResolverService.WellKnownResolutionWarning> Warnings { get; set; }
+    }
+}
\ No newline at end of file
diff --git a/LibMatrix/Services/WellKnownResolvers/SupportWellKnownResolver.cs b/LibMatrix/Services/WellKnownResolvers/SupportWellKnownResolver.cs
new file mode 100644
index 0000000..1d7567a
--- /dev/null
+++ b/LibMatrix/Services/WellKnownResolvers/SupportWellKnownResolver.cs
@@ -0,0 +1,54 @@
+using System.Text.Json.Serialization;
+using ArcaneLibs.Collections;
+using LibMatrix.Extensions;
+using Microsoft.Extensions.Logging;
+
+namespace LibMatrix.Services.WellKnownResolvers;
+
+public class SupportWellKnownResolver(ILogger<SupportWellKnownResolver> logger) {
+    private static readonly SemaphoreCache<WellKnownResolverService.WellKnownResolutionResult<SupportWellKnown>> ClientWellKnownCache = new() {
+        StoreNulls = false
+    };
+
+    private static readonly MatrixHttpClient HttpClient = new();
+
+    public Task<WellKnownResolverService.WellKnownResolutionResult<SupportWellKnown>> TryResolveClientWellKnown(string homeserver) {
+        return ClientWellKnownCache.TryGetOrAdd(homeserver, async () => {
+            logger.LogTrace($"Resolving client well-known: {homeserver}");
+            if ((await TryGetClientWellKnownFromHttps(homeserver)) is { } clientWellKnown)
+                return new() {
+                    Source = WellKnownResolverService.WellKnownSource.Https,
+                    WellKnown = clientWellKnown
+                };
+            return default!;
+        });
+    }
+
+    private async Task<SupportWellKnown?> TryGetClientWellKnownFromHttps(string homeserver) {
+        try {
+            return await HttpClient.TryGetFromJsonAsync<SupportWellKnown>($"https://{homeserver}/.well-known/matrix/support");
+        }
+        catch {
+            return null;
+        }
+    }
+
+    public struct SupportWellKnown {
+        [JsonPropertyName("contacts")]
+        public List<WellKnownContact>? Contacts { get; set; }
+
+        [JsonPropertyName("support_page")]
+        public Uri? SupportPage { get; set; }
+
+        public class WellKnownContact {
+            [JsonPropertyName("email_address")]
+            public string? EmailAddress { get; set; }
+
+            [JsonPropertyName("matrix_id")]
+            public string? MatrixId { get; set; }
+
+            [JsonPropertyName("role")]
+            public required string Role { get; set; }
+        }
+    }
+}
\ No newline at end of file
-- 
cgit 1.5.1