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webfinger.go
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webfinger.go
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/*
* Copyright © 2018 A Bunch Tell LLC.
*
* This file is part of WriteFreely.
*
* WriteFreely is free software: you can redistribute it and/or modify
* it under the terms of the GNU Affero General Public License, included
* in the LICENSE file in this source code package.
*/
package writefreely
import (
"net/http"
"github.com/writeas/go-webfinger"
"github.com/writeas/impart"
"github.com/writeas/web-core/log"
"github.com/writeas/writefreely/config"
)
type wfResolver struct {
db *datastore
cfg *config.Config
}
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 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
}
suspended, err := wfr.db.IsUserSuspended(c.OwnerID)
if err != nil {
log.Error("webfinger find user: check is suspended: %v", err)
return nil, err
}
if suspended {
return nil, wfUserNotFoundErr
}
c.hostName = wfr.cfg.App.Host
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",
},
},
}
return &res, nil
}
func (wfr wfResolver) DummyUser(username string, hostname string, r []webfinger.Rel) (*webfinger.Resource, error) {
return nil, wfUserNotFoundErr
}
func (wfr wfResolver) IsNotFoundError(err error) bool {
return err == wfUserNotFoundErr
}

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