⚗️ Activity pub

2025-12-28 18:08:35 +08:00
parent f06d93a348
commit 2471fa2e75
27 changed files with 6506 additions and 9 deletions
--- a/DysonNetwork.Sphere/ActivityPub/WebFingerController.cs
+++ b/DysonNetwork.Sphere/ActivityPub/WebFingerController.cs
@@ -0,0 +1,85 @@
+using System.Net.Mime;
+using DysonNetwork.Shared.Models;
+using DysonNetwork.Sphere.ActivityPub;
+using Microsoft.AspNetCore.Mvc;
+using Microsoft.EntityFrameworkCore;
+using NodaTime;
+
+namespace DysonNetwork.Sphere.ActivityPub;
+
+[ApiController]
+[Route(".well-known")]
+public class WebFingerController(
+    AppDatabase db,
+    IConfiguration configuration,
+    ILogger<WebFingerController> logger
+) : ControllerBase
+{
+    private string Domain => configuration["ActivityPub:Domain"] ?? "localhost";
+
+    [HttpGet("webfinger")]
+    [Produces("application/jrd+json")]
+    public async Task<ActionResult<WebFingerResponse>> GetWebFinger([FromQuery] string resource)
+    {
+        if (string.IsNullOrEmpty(resource))
+            return BadRequest("Missing resource parameter");
+
+        if (!resource.StartsWith("acct:"))
+            return BadRequest("Invalid resource format");
+
+        var account = resource[5..];
+        var parts = account.Split('@');
+        if (parts.Length != 2)
+            return BadRequest("Invalid account format");
+
+        var username = parts[0];
+        var domain = parts[1];
+
+        if (domain != Domain)
+            return NotFound();
+
+        var publisher = await db.Publishers
+            .Include(p => p.Members)
+            .FirstOrDefaultAsync(p => p.Name == username);
+
+        if (publisher == null)
+            return NotFound();
+
+        var actorUrl = $"https://{Domain}/activitypub/actors/{username}";
+
+        var response = new WebFingerResponse
+        {
+            Subject = resource,
+            Links =
+            [
+                new WebFingerLink
+                {
+                    Rel = "self",
+                    Type = "application/activity+json",
+                    Href = actorUrl
+                },
+                new WebFingerLink
+                {
+                    Rel = "http://webfinger.net/rel/profile-page",
+                    Type = "text/html",
+                    Href = $"https://{Domain}/users/{username}"
+                }
+            ]
+        };
+
+        return Ok(response);
+    }
+}
+
+public class WebFingerResponse
+{
+    public string Subject { get; set; } = null!;
+    public List<WebFingerLink> Links { get; set; } = [];
+}
+
+public class WebFingerLink
+{
+    public string Rel { get; set; } = null!;
+    public string Type { get; set; } = null!;
+    public string Href { get; set; } = null!;
+}