GoToSocial/internal/federation/federatingdb/inbox.go

137 lines
5.2 KiB
Go

/*
GoToSocial
Copyright (C) 2021-2022 GoToSocial Authors admin@gotosocial.org
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU Affero General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU Affero General Public License for more details.
You should have received a copy of the GNU Affero General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
package federatingdb
import (
"context"
"fmt"
"net/url"
"github.com/superseriousbusiness/activity/streams"
"github.com/superseriousbusiness/activity/streams/vocab"
"github.com/superseriousbusiness/gotosocial/internal/config"
"github.com/superseriousbusiness/gotosocial/internal/db"
"github.com/superseriousbusiness/gotosocial/internal/uris"
)
// InboxContains returns true if the OrderedCollection at 'inbox'
// contains the specified 'id'.
//
// The library makes this call only after acquiring a lock first.
//
// Implementation note: we have our own logic for inboxes so always return false here.
func (f *federatingDB) InboxContains(c context.Context, inbox, id *url.URL) (contains bool, err error) {
return false, nil
}
// GetInbox returns the first ordered collection page of the outbox at
// the specified IRI, for prepending new items.
//
// The library makes this call only after acquiring a lock first.
//
// Implementation note: we don't (yet) serve inboxes, so just return empty and nil here.
func (f *federatingDB) GetInbox(c context.Context, inboxIRI *url.URL) (inbox vocab.ActivityStreamsOrderedCollectionPage, err error) {
return streams.NewActivityStreamsOrderedCollectionPage(), nil
}
// SetInbox saves the inbox value given from GetInbox, with new items
// prepended. Note that the new items must not be added as independent
// database entries. Separate calls to Create will do that.
//
// The library makes this call only after acquiring a lock first.
//
// Implementation note: we don't allow inbox setting so just return nil here.
func (f *federatingDB) SetInbox(c context.Context, inbox vocab.ActivityStreamsOrderedCollectionPage) error {
return nil
}
// InboxesForIRI fetches inboxes corresponding to the given iri.
// This allows your server to skip remote dereferencing of iris
// in order to speed up message delivery, if desired.
//
// It is acceptable to just return nil or an empty slice for the inboxIRIs,
// if you don't know the inbox iri, or you don't wish to use this feature.
// In this case, the library will attempt to resolve inboxes of the iri
// by remote dereferencing instead.
//
// If the input iri is the iri of an Actor, then the inbox for the actor
// should be returned as a single-entry slice.
//
// If the input iri is a Collection (such as a Collection of followers),
// then each follower inbox IRI should be returned in the inboxIRIs slice.
//
// The library makes this call only after acquiring a lock first.
func (f *federatingDB) InboxesForIRI(c context.Context, iri *url.URL) (inboxIRIs []*url.URL, err error) {
// check if this is a followers collection iri for a local account...
if iri.Host == config.GetHost() && uris.IsFollowersPath(iri) {
localAccountUsername, err := uris.ParseFollowersPath(iri)
if err != nil {
return nil, fmt.Errorf("couldn't extract local account username from uri %s: %s", iri, err)
}
account, err := f.db.GetLocalAccountByUsername(c, localAccountUsername)
if err != nil {
return nil, fmt.Errorf("couldn't find local account with username %s: %s", localAccountUsername, err)
}
follows, err := f.db.GetAccountFollowedBy(c, account.ID, false)
if err != nil {
return nil, fmt.Errorf("couldn't get followers of local account %s: %s", localAccountUsername, err)
}
for _, follow := range follows {
// make sure we retrieved the following account from the db
if follow.Account == nil {
followingAccount, err := f.db.GetAccountByID(c, follow.AccountID)
if err != nil {
if err == db.ErrNoEntries {
continue
}
return nil, fmt.Errorf("error retrieving account with id %s: %s", follow.AccountID, err)
}
follow.Account = followingAccount
}
inboxIRI, err := url.Parse(follow.Account.InboxURI)
if err != nil {
return nil, fmt.Errorf("error parsing inbox uri of following account %s: %s", follow.Account.InboxURI, err)
}
inboxIRIs = append(inboxIRIs, inboxIRI)
}
return inboxIRIs, nil
}
// check if this is just an account IRI...
if account, err := f.db.GetAccountByURI(c, iri.String()); err == nil {
inboxIRI, err := url.Parse(account.InboxURI)
if err != nil {
return nil, fmt.Errorf("error parsing account inbox uri %s: %s", account.InboxURI, account.InboxURI)
}
// we've got it
inboxIRIs = append(inboxIRIs, inboxIRI)
return inboxIRIs, nil
} else if err != db.ErrNoEntries {
// there's been a real error
return nil, err
}
// no error, we just didn't find anything so let the library handle the rest
return nil, nil
}