public async Task Invoke(HttpContext context, IServiceProvider serviceProvider, IEntityStore entityStore, DbConnection connection, EntityData entityData)
{
if (!context.Request.Query["hub.mode"].Any())
{
await _next(context);
return;
}
if (entityData.RewriteRequestScheme)
{
context.Request.Scheme = "https";
}
var fullpath = $"{context.Request.Scheme}://{context.Request.Host}{context.Request.Path}";
fullpath = fullpath.Remove(fullpath.Length - 5); // remove .atom
var box = await entityStore.GetEntity(fullpath, false);
if (box == null || box.Type != "_inbox")
{
goto error;
}
var user = await entityStore.GetEntity(box.Data["attributedTo"].First().Id, false);
if (user == null)
{
goto error;
}
var mode = context.Request.Query["hub.mode"].First();
var topic = context.Request.Query["hub.topic"].First();
var challenge = context.Request.Query["hub.challenge"].First();
var lease_seconds = context.Request.Query["hub.lease_seconds"].FirstOrDefault();
var leaseSpan = lease_seconds == null ? null : (TimeSpan?)TimeSpan.FromSeconds(int.Parse(lease_seconds));
var obj = await connection.QueryFirstOrDefaultAsync <WebSubClient>("select * from \"WebSubClients\" where \"Topic\" = @Topic and \"ForUserId\" = @ForUserId", new { Topic = topic, ForUserId = user.DbId });
if (obj == null)
{
goto error;
}
if (mode == "subscribe")
{
obj.Expiry = DateTime.Now + leaseSpan.Value;
await connection.ExecuteAsync("update \"WebSubClients\" set \"Expiry\" = @Expiry where \"WebSubClientId\" = @Id", new { Expiry = obj.Expiry, Id = obj.WebSubClientId });
await WebSubBackgroundTask.Make(new WebSubBackgroundData { ActorID = user.Id, ToFollowID = obj.TargetUserId }, connection, obj.Expiry);
context.Response.StatusCode = 200;
await context.Response.WriteAsync(challenge);
}
return;
error:
context.Response.StatusCode = 404;
await context.Response.WriteAsync("nah");
}
public override async Task <bool> Handle()
{
var activity = MainObject;
if (MainObject.Type == "Undo")
{
var subObject = await EntityStore.GetEntity((string)activity.Data["object"].First().Primitive, false);
if (subObject?.Type != "Follow")
{
return(true);
}
activity = subObject;
}
else if (MainObject.Type != "Follow")
{
return(true);
}
var target = await EntityStore.GetEntity((string)activity.Data["object"].First().Primitive, true);
if (target == null)
{
return(true); // can't really fix subscriptions on a thing that doesn't exist
}
var hubUrl = (string)target.Data["_:hubUrl"].SingleOrDefault()?.Primitive;
if (hubUrl == null)
{
return(true);
}
var taskEvent = WebSubBackgroundTask.Make(new WebSubBackgroundData {
Unsubscribe = MainObject.Type == "Undo", ToFollowID = target.Id, ActorID = (string)MainObject.Data["actor"].Single().Primitive
});
_context.EventQueue.Add(taskEvent);
await _context.SaveChangesAsync();
return(true);
}
public override async Task <bool> Handle()
{
var activity = MainObject;
if (MainObject.Type == "https://www.w3.org/ns/activitystreams#Undo")
{
var subObject = await EntityStore.GetEntity(activity.Data["object"].First().Id, false);
if (subObject?.Type != "https://www.w3.org/ns/activitystreams#Follow")
{
return(true);
}
activity = subObject;
}
else if (MainObject.Type != "https://www.w3.org/ns/activitystreams#Follow")
{
return(true);
}
var target = await EntityStore.GetEntity(activity.Data["object"].First().Id, true);
if (target == null)
{
return(true); // can't really fix subscriptions on a thing that doesn't exist
}
var hubUrl = (string)target.Data["_:hubUrl"].SingleOrDefault()?.Primitive;
if (hubUrl == null)
{
return(true);
}
await WebSubBackgroundTask.Make(new WebSubBackgroundData { Unsubscribe = MainObject.Type == "https://www.w3.org/ns/activitystreams#Undo", ToFollowID = target.DbId, ActorID = MainObject.Data["actor"].Single().Id }, _connection);
return(true);
}
public async Task Invoke(HttpContext context, IServiceProvider serviceProvider, IEntityStore entityStore, APContext db, EntityData entityData)
{
if (!context.Request.Query["hub.mode"].Any())
{
await _next(context);
return;
}
if (entityData.RewriteRequestScheme)
{
context.Request.Scheme = "https";
}
var fullpath = $"{context.Request.Scheme}://{context.Request.Host}{context.Request.Path}";
fullpath = fullpath.Remove(fullpath.Length - 5); // remove .atom
var box = await entityStore.GetEntity(fullpath, false);
if (box == null || box.Type != "_inbox")
{
goto error;
}
var user = await entityStore.GetEntity((string)box.Data["attributedTo"].First().Primitive, false);
if (user == null)
{
goto error;
}
var mode = context.Request.Query["hub.mode"].First();
var topic = context.Request.Query["hub.topic"].First();
var challenge = context.Request.Query["hub.challenge"].First();
var lease_seconds = context.Request.Query["hub.lease_seconds"].FirstOrDefault();
var leaseSpan = lease_seconds == null ? null : (TimeSpan?)TimeSpan.FromSeconds(int.Parse(lease_seconds));
var obj = await db.WebSubClients.FirstOrDefaultAsync(a => a.Topic == topic && a.ForUserId == user.Id);
if (obj == null)
{
goto error;
}
if (mode == "subscribe")
{
obj.Expiry = DateTime.Now + leaseSpan.Value;
var task = WebSubBackgroundTask.Make(new WebSubBackgroundData {
ActorID = user.Id, ToFollowID = obj.TargetUserId
});
task.NextAttempt = obj.Expiry;
db.EventQueue.Add(task);
await db.SaveChangesAsync();
context.Response.StatusCode = 200;
await context.Response.WriteAsync(challenge);
}
return;
error:
context.Response.StatusCode = 404;
await context.Response.WriteAsync("nah");
}