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SocialPub/PrivaPub/Controllers/ServerToServer/WellKnownController.cs
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using Microsoft.AspNetCore.Mvc;
using MongoDB.Entities;
using PrivaPub.Models.Federation;
using PrivaPub.Models.User;
using PrivaPub.Services.Federation;
using PrivaPub.StaticServices;
using System.Text.Json.Nodes;
using PostEntity = PrivaPub.Models.Post.Post;
namespace PrivaPub.Controllers.ServerToServer
{
[ApiController]
public class WellKnownController : ControllerBase
{
readonly ILocalActorService _localActors;
readonly DbEntities _dbEntities;
public WellKnownController(ILocalActorService localActors, DbEntities dbEntities)
{
_localActors = localActors;
_dbEntities = dbEntities;
}
[HttpGet, Route("/.well-known/webfinger")]
public async Task<IActionResult> WebFinger([FromQuery] string resource, CancellationToken token)
{
if (string.IsNullOrEmpty(resource))
return BadRequest();
LocalActor actor;
if (resource.StartsWith("acct:", StringComparison.OrdinalIgnoreCase))
{
var parts = resource[5..].TrimStart('@').Split('@');
var domain = new Uri(_localActors.BaseAddress).Authority;
if (parts.Length != 2 || !parts[1].Equals(domain, StringComparison.OrdinalIgnoreCase))
return NotFound();
actor = await _localActors.FindByUserName(parts[0], token);
}
else
actor = await _localActors.FindByUri(resource, token);
if (actor == default)
return NotFound();
var document = new JsonObject
{
["subject"] = $"acct:{actor.Handle}",
["aliases"] = new JsonArray(actor.Uri),
["links"] = new JsonArray(
new JsonObject { ["rel"] = "self", ["type"] = "application/activity+json", ["href"] = actor.Uri },
new JsonObject { ["rel"] = "http://webfinger.net/rel/profile-page", ["type"] = "text/html", ["href"] = actor.Uri })
};
return Content(document.ToJsonString(), "application/jrd+json; charset=utf-8");
}
[HttpGet, Route("/.well-known/nodeinfo")]
public IActionResult NodeInfoLinks()
{
var document = new JsonObject
{
["links"] = new JsonArray(new JsonObject
{
["rel"] = "http://nodeinfo.diaspora.software/ns/schema/2.0",
["href"] = $"{_localActors.BaseAddress}/nodeinfo/2.0"
})
};
return Content(document.ToJsonString(), "application/json; charset=utf-8");
}
[HttpGet, Route("/nodeinfo/2.0")]
public async Task<IActionResult> NodeInfo(CancellationToken token)
{
var users = await DB.Default.CountAsync<Avatar>(a => !a.DeletionAt.HasValue, token);
var posts = await DB.Default.CountAsync<PostEntity>(p => !p.IsFederatedCopy, token);
var document = new JsonObject
{
["version"] = "2.0",
["software"] = new JsonObject { ["name"] = "privapub", ["version"] = BuildInfo.Ref },
["protocols"] = new JsonArray("activitypub"),
["services"] = new JsonObject { ["inbound"] = new JsonArray(), ["outbound"] = new JsonArray() },
["openRegistrations"] = true,
["usage"] = new JsonObject
{
["users"] = new JsonObject { ["total"] = users },
["localPosts"] = posts
},
["metadata"] = new JsonObject()
};
return Content(document.ToJsonString(), "application/json; profile=\"http://nodeinfo.diaspora.software/ns/schema/2.0#\"; charset=utf-8");
}
}
}