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[backend/federation] Add support for returning xrd+xml WebFinger responses for local users

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This commit is contained in:
Laura Hausmann 2024-08-14 01:49:49 +02:00
parent c3eacb34c2
commit b37f02846b
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GPG key ID: D044E84C5BE01605
4 changed files with 23 additions and 20 deletions
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8
Iceshrimp.Backend/Controllers/Federation/WellKnownController.cs
View file

@ -24,7 +24,7 @@ namespace Iceshrimp.Backend.Controllers.Federation;
public class WellKnownController(IOptions<Config.InstanceSection> config, DatabaseContext db) : ControllerBase
{
[HttpGet("webfinger")]
[Produces(MediaTypeNames.Application.Json, "application/jrd+json")]
[Produces("application/jrd+json", "application/json", "application/xrd+xml", "application/xml")]
[ProducesResults(HttpStatusCode.OK)]
[ProducesErrors(HttpStatusCode.NotFound)]
public async Task<WebFingerResponse> WebFinger([FromQuery] string resource)
@ -66,6 +66,12 @@ public class WellKnownController(IOptions<Config.InstanceSection> config, Databa
Href = user.GetPublicUri(config.Value)
},
new WebFingerLink
{
Rel = "self",
Type = "application/ld+json; profile=\"https://www.w3.org/ns/activitystreams\"",
Href = user.GetPublicUri(config.Value)
},
new WebFingerLink
{
Rel = "http://webfinger.net/rel/profile-page",
Type = "text/html",

2
Iceshrimp.Backend/Core/Extensions/MvcBuilderExtensions.cs
View file

@ -1,6 +1,7 @@
using System.Buffers;
using System.Net;
using System.Text.Encodings.Web;
using System.Xml;
using Iceshrimp.Backend.Controllers.Shared.Attributes;
using Iceshrimp.Backend.Core.Middleware;
using Microsoft.AspNetCore.Mvc;
@ -35,6 +36,7 @@ public static class MvcBuilderExtensions
opts.InputFormatters.Insert(0, new JsonInputMultiFormatter());
opts.OutputFormatters.Insert(0, new JsonOutputMultiFormatter());
opts.OutputFormatters.Add(new XmlSerializerOutputFormatter());
});
return builder;

21
Iceshrimp.Backend/Core/Federation/WebFinger/Types.cs
View file

@ -30,24 +30,25 @@ public sealed class WebFingerLink
[SuppressMessage("ReSharper", "CollectionNeverUpdated.Global")]
[SuppressMessage("ReSharper", "ClassNeverInstantiated.Global")]
[XmlRoot("XRD", Namespace = "http://docs.oasis-open.org/ns/xri/xrd-1.0", IsNullable = false)]
public sealed class WebFingerResponse
{
[J("links")] [JR] public List<WebFingerLink> Links { get; set; } = null!;
[J("subject")] [JR] public string Subject { get; set; } = null!;
[XmlElement("Link")]
[J("links")]
[JR]
public required List<WebFingerLink> Links { get; set; } = null!;
[XmlElement("Subject")]
[J("subject")]
[JR]
public required string Subject { get; set; } = null!;
[XmlElement("Alias")]
[J("aliases")]
[JI(Condition = JsonIgnoreCondition.WhenWritingNull)]
public List<string>? Aliases { get; set; }
}
[XmlRoot("XRD", Namespace = "http://docs.oasis-open.org/ns/xri/xrd-1.0", IsNullable = false)]
public sealed class WebFingerXmlResponse
{
[XmlElement("Subject")] public required string Subject { get; set; } = null!;
[XmlElement("Alias")] public List<string>? Aliases { get; set; }
[XmlElement("Link")] public required List<WebFingerLink> Links { get; set; }
}
public sealed class NodeInfoIndexResponse
{
[J("links")] [JR] public List<WebFingerLink> Links { get; set; } = null!;

12
Iceshrimp.Backend/Core/Federation/WebFinger/WebFingerService.cs
View file

@ -59,16 +59,10 @@ public class WebFingerService(
if (res.Content.Headers.ContentType?.MediaType is "application/jrd+json" or "application/json")
return await res.Content.ReadFromJsonAsync<WebFingerResponse>(cts.Token);
var deserializer = new XmlSerializer(typeof(WebFingerXmlResponse));
if (deserializer.Deserialize(await res.Content.ReadAsStreamAsync(cts.Token)) is not WebFingerXmlResponse xml)
throw new Exception("Failed to deserialize xml payload");
var deserializer = new XmlSerializer(typeof(WebFingerResponse));
return new WebFingerResponse
{
Subject = xml.Subject,
Links = xml.Links,
Aliases = xml.Aliases
};
return deserializer.Deserialize(await res.Content.ReadAsStreamAsync(cts.Token)) as WebFingerResponse ??
throw new Exception("Failed to deserialize xml payload");
}
public static (string query, string proto, string domain) ParseQuery(string query)