mirror of
https://github.com/superseriousbusiness/gotosocial
synced 2024-11-23 21:03:19 +00:00
337 lines
11 KiB
Go
337 lines
11 KiB
Go
// GoToSocial
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// Copyright (C) GoToSocial Authors admin@gotosocial.org
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// SPDX-License-Identifier: AGPL-3.0-or-later
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//
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// This program is free software: you can redistribute it and/or modify
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// it under the terms of the GNU Affero General Public License as published by
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// the Free Software Foundation, either version 3 of the License, or
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// (at your option) any later version.
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//
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// This program is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU Affero General Public License for more details.
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//
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// You should have received a copy of the GNU Affero General Public License
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// along with this program. If not, see <http://www.gnu.org/licenses/>.
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package federatingdb
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import (
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"context"
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"encoding/json"
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"errors"
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"fmt"
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"net/url"
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"codeberg.org/gruf/go-logger/v2/level"
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"github.com/superseriousbusiness/activity/streams"
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"github.com/superseriousbusiness/activity/streams/vocab"
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"github.com/superseriousbusiness/gotosocial/internal/ap"
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"github.com/superseriousbusiness/gotosocial/internal/config"
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"github.com/superseriousbusiness/gotosocial/internal/db"
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"github.com/superseriousbusiness/gotosocial/internal/gtsmodel"
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"github.com/superseriousbusiness/gotosocial/internal/id"
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"github.com/superseriousbusiness/gotosocial/internal/log"
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"github.com/superseriousbusiness/gotosocial/internal/uris"
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)
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func sameActor(actor1 vocab.ActivityStreamsActorProperty, actor2 vocab.ActivityStreamsActorProperty) bool {
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if actor1 == nil || actor2 == nil {
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return false
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}
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for a1Iter := actor1.Begin(); a1Iter != actor1.End(); a1Iter = a1Iter.Next() {
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for a2Iter := actor2.Begin(); a2Iter != actor2.End(); a2Iter = a2Iter.Next() {
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if a1Iter.GetIRI() == nil {
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return false
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}
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if a2Iter.GetIRI() == nil {
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return false
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}
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if a1Iter.GetIRI().String() == a2Iter.GetIRI().String() {
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return true
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}
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}
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}
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return false
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}
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// NewID creates a new IRI id for the provided activity or object. The
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// implementation does not need to set the 'id' property and simply
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// needs to determine the value.
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//
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// The go-fed library will handle setting the 'id' property on the
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// activity or object provided with the value returned.
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func (f *federatingDB) NewID(ctx context.Context, t vocab.Type) (idURL *url.URL, err error) {
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if log.Level() >= level.DEBUG {
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i, err := marshalItem(t)
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if err != nil {
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return nil, err
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}
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l := log.WithContext(ctx).
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WithField("newID", i)
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l.Debug("entering NewID")
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}
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switch t.GetTypeName() {
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case ap.ActivityFollow:
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// FOLLOW
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// ID might already be set on a follow we've created, so check it here and return it if it is
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follow, ok := t.(vocab.ActivityStreamsFollow)
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if !ok {
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return nil, errors.New("newid: follow couldn't be parsed into vocab.ActivityStreamsFollow")
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}
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idProp := follow.GetJSONLDId()
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if idProp != nil {
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if idProp.IsIRI() {
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return idProp.GetIRI(), nil
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}
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}
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// it's not set so create one based on the actor set on the follow (ie., the followER not the followEE)
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actorProp := follow.GetActivityStreamsActor()
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if actorProp != nil {
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for iter := actorProp.Begin(); iter != actorProp.End(); iter = iter.Next() {
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// take the IRI of the first actor we can find (there should only be one)
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if iter.IsIRI() {
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// if there's an error here, just use the fallback behavior -- we don't need to return an error here
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if actorAccount, err := f.state.DB.GetAccountByURI(ctx, iter.GetIRI().String()); err == nil {
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newID, err := id.NewRandomULID()
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if err != nil {
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return nil, err
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}
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return url.Parse(uris.GenerateURIForFollow(actorAccount.Username, newID))
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}
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}
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}
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}
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case ap.ObjectNote:
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// NOTE aka STATUS
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// ID might already be set on a note we've created, so check it here and return it if it is
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note, ok := t.(vocab.ActivityStreamsNote)
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if !ok {
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return nil, errors.New("newid: note couldn't be parsed into vocab.ActivityStreamsNote")
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}
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idProp := note.GetJSONLDId()
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if idProp != nil {
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if idProp.IsIRI() {
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return idProp.GetIRI(), nil
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}
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}
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case ap.ActivityLike:
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// LIKE aka FAVE
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// ID might already be set on a fave we've created, so check it here and return it if it is
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fave, ok := t.(vocab.ActivityStreamsLike)
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if !ok {
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return nil, errors.New("newid: fave couldn't be parsed into vocab.ActivityStreamsLike")
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}
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idProp := fave.GetJSONLDId()
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if idProp != nil {
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if idProp.IsIRI() {
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return idProp.GetIRI(), nil
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}
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}
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case ap.ActivityCreate:
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// CREATE
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// ID might already be set on a Create, so check it here and return it if it is
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create, ok := t.(vocab.ActivityStreamsCreate)
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if !ok {
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return nil, errors.New("newid: create couldn't be parsed into vocab.ActivityStreamsCreate")
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}
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idProp := create.GetJSONLDId()
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if idProp != nil {
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if idProp.IsIRI() {
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return idProp.GetIRI(), nil
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}
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}
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case ap.ActivityAnnounce:
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// ANNOUNCE aka BOOST
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// ID might already be set on an announce we've created, so check it here and return it if it is
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announce, ok := t.(vocab.ActivityStreamsAnnounce)
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if !ok {
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return nil, errors.New("newid: announce couldn't be parsed into vocab.ActivityStreamsAnnounce")
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}
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idProp := announce.GetJSONLDId()
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if idProp != nil {
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if idProp.IsIRI() {
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return idProp.GetIRI(), nil
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}
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}
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case ap.ActivityUpdate:
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// UPDATE
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// ID might already be set on an update we've created, so check it here and return it if it is
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update, ok := t.(vocab.ActivityStreamsUpdate)
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if !ok {
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return nil, errors.New("newid: update couldn't be parsed into vocab.ActivityStreamsUpdate")
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}
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idProp := update.GetJSONLDId()
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if idProp != nil {
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if idProp.IsIRI() {
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return idProp.GetIRI(), nil
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}
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}
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case ap.ActivityBlock:
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// BLOCK
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// ID might already be set on a block we've created, so check it here and return it if it is
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block, ok := t.(vocab.ActivityStreamsBlock)
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if !ok {
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return nil, errors.New("newid: block couldn't be parsed into vocab.ActivityStreamsBlock")
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}
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idProp := block.GetJSONLDId()
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if idProp != nil {
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if idProp.IsIRI() {
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return idProp.GetIRI(), nil
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}
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}
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case ap.ActivityUndo:
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// UNDO
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// ID might already be set on an undo we've created, so check it here and return it if it is
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undo, ok := t.(vocab.ActivityStreamsUndo)
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if !ok {
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return nil, errors.New("newid: undo couldn't be parsed into vocab.ActivityStreamsUndo")
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}
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idProp := undo.GetJSONLDId()
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if idProp != nil {
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if idProp.IsIRI() {
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return idProp.GetIRI(), nil
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}
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}
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}
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// fallback default behavior: just return a random ULID after our protocol and host
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newID, err := id.NewRandomULID()
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if err != nil {
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return nil, err
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}
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return url.Parse(fmt.Sprintf("%s://%s/%s", config.GetProtocol(), config.GetHost(), newID))
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}
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// ActorForOutbox fetches the actor's IRI for the given outbox IRI.
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//
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// The library makes this call only after acquiring a lock first.
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func (f *federatingDB) ActorForOutbox(ctx context.Context, outboxIRI *url.URL) (actorIRI *url.URL, err error) {
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acct, err := f.getAccountForIRI(ctx, outboxIRI)
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if err != nil {
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return nil, err
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}
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return url.Parse(acct.URI)
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}
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// ActorForInbox fetches the actor's IRI for the given outbox IRI.
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//
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// The library makes this call only after acquiring a lock first.
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func (f *federatingDB) ActorForInbox(ctx context.Context, inboxIRI *url.URL) (actorIRI *url.URL, err error) {
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acct, err := f.getAccountForIRI(ctx, inboxIRI)
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if err != nil {
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return nil, err
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}
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return url.Parse(acct.URI)
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}
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// getAccountForIRI returns the account that corresponds to or owns the given IRI.
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func (f *federatingDB) getAccountForIRI(ctx context.Context, iri *url.URL) (*gtsmodel.Account, error) {
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var (
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acct *gtsmodel.Account
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err error
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)
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switch {
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case uris.IsUserPath(iri):
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if acct, err = f.state.DB.GetAccountByURI(ctx, iri.String()); err != nil {
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if err == db.ErrNoEntries {
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return nil, fmt.Errorf("no actor found that corresponds to uri %s", iri.String())
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}
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return nil, fmt.Errorf("db error searching for actor with uri %s", iri.String())
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}
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return acct, nil
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case uris.IsInboxPath(iri):
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if acct, err = f.state.DB.GetAccountByInboxURI(ctx, iri.String()); err != nil {
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if err == db.ErrNoEntries {
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return nil, fmt.Errorf("no actor found that corresponds to inbox %s", iri.String())
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}
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return nil, fmt.Errorf("db error searching for actor with inbox %s", iri.String())
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}
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return acct, nil
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case uris.IsOutboxPath(iri):
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if acct, err = f.state.DB.GetAccountByOutboxURI(ctx, iri.String()); err != nil {
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if err == db.ErrNoEntries {
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return nil, fmt.Errorf("no actor found that corresponds to outbox %s", iri.String())
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}
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return nil, fmt.Errorf("db error searching for actor with outbox %s", iri.String())
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}
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return acct, nil
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case uris.IsFollowersPath(iri):
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if acct, err = f.state.DB.GetAccountByFollowersURI(ctx, iri.String()); err != nil {
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if err == db.ErrNoEntries {
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return nil, fmt.Errorf("no actor found that corresponds to followers_uri %s", iri.String())
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}
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return nil, fmt.Errorf("db error searching for actor with followers_uri %s", iri.String())
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}
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return acct, nil
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case uris.IsFollowingPath(iri):
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if acct, err = f.state.DB.GetAccountByFollowingURI(ctx, iri.String()); err != nil {
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if err == db.ErrNoEntries {
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return nil, fmt.Errorf("no actor found that corresponds to following_uri %s", iri.String())
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}
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return nil, fmt.Errorf("db error searching for actor with following_uri %s", iri.String())
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}
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return acct, nil
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default:
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return nil, fmt.Errorf("getActorForIRI: iri %s not recognised", iri)
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}
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}
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// collectFollows takes a slice of iris and converts them into ActivityStreamsCollection of IRIs.
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func (f *federatingDB) collectIRIs(ctx context.Context, iris []*url.URL) (vocab.ActivityStreamsCollection, error) {
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collection := streams.NewActivityStreamsCollection()
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items := streams.NewActivityStreamsItemsProperty()
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for _, i := range iris {
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items.AppendIRI(i)
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}
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collection.SetActivityStreamsItems(items)
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return collection, nil
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}
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// extractFromCtx extracts some useful values from a context passed into the federatingDB via the API:
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// - The target account that owns the inbox or URI being interacted with.
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// - The requesting account that posted to the inbox.
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// - A channel that messages for the processor can be placed into.
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//
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// If a value is not present, nil will be returned for it. It's up to the caller to check this and respond appropriately.
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func extractFromCtx(ctx context.Context) (receivingAccount, requestingAccount *gtsmodel.Account) {
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receivingAccountI := ctx.Value(ap.ContextReceivingAccount)
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if receivingAccountI != nil {
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var ok bool
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receivingAccount, ok = receivingAccountI.(*gtsmodel.Account)
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if !ok {
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log.Panicf(ctx, "context entry with key %s could not be asserted to *gtsmodel.Account", ap.ContextReceivingAccount)
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}
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}
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requestingAcctI := ctx.Value(ap.ContextRequestingAccount)
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if requestingAcctI != nil {
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var ok bool
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requestingAccount, ok = requestingAcctI.(*gtsmodel.Account)
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if !ok {
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log.Panicf(ctx, "context entry with key %s could not be asserted to *gtsmodel.Account", ap.ContextRequestingAccount)
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}
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}
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return
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}
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func marshalItem(item vocab.Type) (string, error) {
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m, err := streams.Serialize(item)
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if err != nil {
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return "", err
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}
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b, err := json.Marshal(m)
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if err != nil {
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return "", err
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}
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return string(b), nil
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}
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