Method FindUser

webfinger.go:32–91

(username string, host, requestHost string, r []webfinger.Rel)

var wfUserNotFoundErr = impart.HTTPError{http.StatusNotFound, "User not found."}

func (wfr wfResolver) FindUser(username string, host, requestHost string, r []webfinger.Rel) (*webfinger.Resource, error) {
	var c *Collection
	var err error
	if username == host {
		c = instanceColl
	} else if wfr.cfg.App.SingleUser {
		c, err = wfr.db.GetCollectionByID(1)
	} else {
		c, err = wfr.db.GetCollection(username)
	}
	if err != nil {
		log.Error("Unable to get blog: %v", err)
		return nil, err
	}
	c.hostName = wfr.cfg.App.Host

	if !c.IsInstanceColl() {
		silenced, err := wfr.db.IsUserSilenced(c.OwnerID)
		if err != nil {
			log.Error("webfinger find user: check is silenced: %v", err)
			return nil, err
		}
		if silenced {
			return nil, wfUserNotFoundErr
		}
	}
	if wfr.cfg.App.SingleUser {
		// Ensure handle matches user-chosen one on single-user blogs
		if username != c.Alias {
			log.Info("Username '%s' is not handle '%s'", username, c.Alias)
			return nil, wfUserNotFoundErr
		}
	}
	// Only return information if site has federation enabled.
	// TODO: enable two levels of federation? Unlisted or Public on timelines?
	if !wfr.cfg.App.Federation {
		return nil, wfUserNotFoundErr
	}

	res := webfinger.Resource{
		Subject: "acct:" + username + "@" + host,
		Aliases: []string{
			c.CanonicalURL(),
			c.FederatedAccount(),
		},
		Links: []webfinger.Link{
			{
				HRef: c.CanonicalURL(),
				Type: "text/html",
				Rel:  "https://webfinger.net/rel/profile-page",
			},
			{
				HRef: c.FederatedAccount(),
				Type: "application/activity+json",
				Rel:  "self",
			},
		},
	}