gotosocial/internal/ap/activitystreams.go
tobi 754b7be9cf [feature] Support new model of interaction flow for forward compat with v0.21.0 (#4394)
~~Still WIP!~~

This PR allows v0.20.0 of GtS to be forward-compatible with the interaction request / authorization flow that will fully replace the current flow in v0.21.0.

Basically, this means we need to recognize LikeRequest, ReplyRequest, and AnnounceRequest, and in response to those requests, deliver either a Reject or an Accept, with the latter pointing towards a LikeAuthorization, ReplyAuthorization, or AnnounceAuthorization, respectively. This can then be used by the remote instance to prove to third parties that the interaction has been accepted by the interactee. These Authorization types need to be dereferencable to third parties, so we need to serve them.

As well as recognizing the above "polite" interaction request types, we also need to still serve appropriate responses to "impolite" interaction request types, where an instance that's unaware of interaction policies tries to interact with a post by sending a reply, like, or boost directly, without wrapping it in a WhateverRequest type.

Doesn't fully close https://codeberg.org/superseriousbusiness/gotosocial/issues/4026 but gets damn near (just gotta update the federating with GtS documentation).

Migrations tested on both Postgres and SQLite.

Co-authored-by: kim <grufwub@gmail.com>
Reviewed-on: https://codeberg.org/superseriousbusiness/gotosocial/pulls/4394
Co-authored-by: tobi <tobi.smethurst@protonmail.com>
Co-committed-by: tobi <tobi.smethurst@protonmail.com>
2025-09-14 15:37:35 +02:00

167 lines
9.6 KiB
Go

// GoToSocial
// Copyright (C) GoToSocial Authors admin@gotosocial.org
// SPDX-License-Identifier: AGPL-3.0-or-later
//
// 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 ap
import (
"net/url"
"code.superseriousbusiness.org/activity/pub"
)
// publicIRI is a pre-parsed global public IRI instance.
var publicIRI = func() *url.URL {
url, err := url.Parse(pub.PublicActivityPubIRI)
if err != nil {
panic(err)
}
return url
}()
// PublicIRI returns a fresh copy of the *url.URL version of the
// magic ActivityPub URI https://www.w3.org/ns/activitystreams#Public
func PublicIRI() *url.URL { var u url.URL; u = *publicIRI; return &u }
// https://www.w3.org/TR/activitystreams-vocabulary
const (
ActivityAccept = "Accept" // ActivityStreamsAccept https://www.w3.org/TR/activitystreams-vocabulary/#dfn-accept
ActivityAdd = "Add" // ActivityStreamsAdd https://www.w3.org/TR/activitystreams-vocabulary/#dfn-add
ActivityAnnounce = "Announce" // ActivityStreamsAnnounce https://www.w3.org/TR/activitystreams-vocabulary/#dfn-announce
ActivityArrive = "Arrive" // ActivityStreamsArrive https://www.w3.org/TR/activitystreams-vocabulary/#dfn-arrive
ActivityBlock = "Block" // ActivityStreamsBlock https://www.w3.org/TR/activitystreams-vocabulary/#dfn-block
ActivityCreate = "Create" // ActivityStreamsCreate https://www.w3.org/TR/activitystreams-vocabulary/#dfn-create
ActivityDelete = "Delete" // ActivityStreamsDelete https://www.w3.org/TR/activitystreams-vocabulary/#dfn-delete
ActivityDislike = "Dislike" // ActivityStreamsDislike https://www.w3.org/TR/activitystreams-vocabulary/#dfn-dislike
ActivityFlag = "Flag" // ActivityStreamsFlag https://www.w3.org/TR/activitystreams-vocabulary/#dfn-flag
ActivityFollow = "Follow" // ActivityStreamsFollow https://www.w3.org/TR/activitystreams-vocabulary/#dfn-follow
ActivityIgnore = "Ignore" // ActivityStreamsIgnore https://www.w3.org/TR/activitystreams-vocabulary/#dfn-ignore
ActivityInvite = "Invite" // ActivityStreamsInvite https://www.w3.org/TR/activitystreams-vocabulary/#dfn-invite
ActivityJoin = "Join" // ActivityStreamsJoin https://www.w3.org/TR/activitystreams-vocabulary/#dfn-join
ActivityLeave = "Leave" // ActivityStreamsLeave https://www.w3.org/TR/activitystreams-vocabulary/#dfn-leave
ActivityLike = "Like" // ActivityStreamsLike https://www.w3.org/TR/activitystreams-vocabulary/#dfn-like
ActivityListen = "Listen" // ActivityStreamsListen https://www.w3.org/TR/activitystreams-vocabulary/#dfn-listen
ActivityMove = "Move" // ActivityStreamsMove https://www.w3.org/TR/activitystreams-vocabulary/#dfn-move
ActivityOffer = "Offer" // ActivityStreamsOffer https://www.w3.org/TR/activitystreams-vocabulary/#dfn-offer
ActivityQuestion = "Question" // ActivityStreamsQuestion https://www.w3.org/TR/activitystreams-vocabulary/#dfn-question
ActivityReject = "Reject" // ActivityStreamsReject https://www.w3.org/TR/activitystreams-vocabulary/#dfn-reject
ActivityRead = "Read" // ActivityStreamsRead https://www.w3.org/TR/activitystreams-vocabulary/#dfn-read
ActivityRemove = "Remove" // ActivityStreamsRemove https://www.w3.org/TR/activitystreams-vocabulary/#dfn-remove
ActivityTentativeReject = "TentativeReject" // ActivityStreamsTentativeReject https://www.w3.org/TR/activitystreams-vocabulary/#dfn-tentativereject
ActivityTentativeAccept = "TentativeAccept" // ActivityStreamsTentativeAccept https://www.w3.org/TR/activitystreams-vocabulary/#dfn-tentativeaccept
ActivityTravel = "Travel" // ActivityStreamsTravel https://www.w3.org/TR/activitystreams-vocabulary/#dfn-travel
ActivityUndo = "Undo" // ActivityStreamsUndo https://www.w3.org/TR/activitystreams-vocabulary/#dfn-undo
ActivityUpdate = "Update" // ActivityStreamsUpdate https://www.w3.org/TR/activitystreams-vocabulary/#dfn-update
ActivityView = "View" // ActivityStreamsView https://www.w3.org/TR/activitystreams-vocabulary/#dfn-view
ActorApplication = "Application" // ActivityStreamsApplication https://www.w3.org/TR/activitystreams-vocabulary/#dfn-application
ActorGroup = "Group" // ActivityStreamsGroup https://www.w3.org/TR/activitystreams-vocabulary/#dfn-group
ActorOrganization = "Organization" // ActivityStreamsOrganization https://www.w3.org/TR/activitystreams-vocabulary/#dfn-organization
ActorPerson = "Person" // ActivityStreamsPerson https://www.w3.org/TR/activitystreams-vocabulary/#dfn-person
ActorService = "Service" // ActivityStreamsService https://www.w3.org/TR/activitystreams-vocabulary/#dfn-service
ObjectArticle = "Article" // ActivityStreamsArticle https://www.w3.org/TR/activitystreams-vocabulary/#dfn-article
ObjectAudio = "Audio" // ActivityStreamsAudio https://www.w3.org/TR/activitystreams-vocabulary/#dfn-audio
ObjectDocument = "Document" // ActivityStreamsDocument https://www.w3.org/TR/activitystreams-vocabulary/#dfn-document
ObjectEvent = "Event" // ActivityStreamsEvent https://www.w3.org/TR/activitystreams-vocabulary/#dfn-event
ObjectImage = "Image" // ActivityStreamsImage https://www.w3.org/TR/activitystreams-vocabulary/#dfn-image
ObjectNote = "Note" // ActivityStreamsNote https://www.w3.org/TR/activitystreams-vocabulary/#dfn-note
ObjectPage = "Page" // ActivityStreamsPage https://www.w3.org/TR/activitystreams-vocabulary/#dfn-page
ObjectPlace = "Place" // ActivityStreamsPlace https://www.w3.org/TR/activitystreams-vocabulary/#dfn-place
ObjectProfile = "Profile" // ActivityStreamsProfile https://www.w3.org/TR/activitystreams-vocabulary/#dfn-profile
ObjectRelationship = "Relationship" // ActivityStreamsRelationship https://www.w3.org/TR/activitystreams-vocabulary/#dfn-relationship
ObjectTombstone = "Tombstone" // ActivityStreamsTombstone https://www.w3.org/TR/activitystreams-vocabulary/#dfn-tombstone
ObjectVideo = "Video" // ActivityStreamsVideo https://www.w3.org/TR/activitystreams-vocabulary/#dfn-video
ObjectCollection = "Collection" // ActivityStreamsCollection https://www.w3.org/TR/activitystreams-vocabulary/#dfn-collection
ObjectCollectionPage = "CollectionPage" // ActivityStreamsCollectionPage https://www.w3.org/TR/activitystreams-vocabulary/#dfn-collectionpage
ObjectOrderedCollection = "OrderedCollection" // ActivityStreamsOrderedCollection https://www.w3.org/TR/activitystreams-vocabulary/#dfn-orderedcollection
ObjectOrderedCollectionPage = "OrderedCollectionPage" // ActivityStreamsOrderedCollectionPage https://www.w3.org/TR/activitystreams-vocabulary/#dfn-orderedcollectionPage
// Hashtag is not in the AS spec per se, but it tends to get used
// as though 'Hashtag' is a named type under the Tag property.
//
// See https://www.w3.org/TR/activitystreams-vocabulary/#microsyntaxes
// and https://www.w3.org/TR/activitystreams-vocabulary/#dfn-tag
TagHashtag = "Hashtag"
// Not in the AS spec, just used internally to indicate
// that we don't *yet* know what type of Object something is.
ObjectUnknown = "Unknown"
/* Extensions and unofficial additions */
/* GtS stuff */
ActivityLikeRequest = "LikeRequest"
ActivityReplyRequest = "ReplyRequest"
ActivityAnnounceRequest = "AnnounceRequest"
ObjectLikeAuthorization = "LikeAuthorization"
ObjectReplyAuthorization = "ReplyAuthorization"
ObjectAnnounceAuthorization = "AnnounceAuthorization"
/* Funkwhale stuff */
ObjectAlbum = "Album"
)
// isActivity returns whether AS type name is of an Activity (NOT IntransitiveActivity).
func isActivity(typeName string) bool {
switch typeName {
case ActivityAccept,
ActivityTentativeAccept,
ActivityAdd,
ActivityCreate,
ActivityDelete,
ActivityFollow,
ActivityIgnore,
ActivityJoin,
ActivityLeave,
ActivityLike,
ActivityOffer,
ActivityInvite,
ActivityReject,
ActivityTentativeReject,
ActivityRemove,
ActivityUndo,
ActivityUpdate,
ActivityView,
ActivityListen,
ActivityRead,
ActivityMove,
ActivityAnnounce,
ActivityBlock,
ActivityFlag,
ActivityDislike,
ActivityLikeRequest,
ActivityReplyRequest,
ActivityAnnounceRequest:
return true
default:
return false
}
}
// isIntransitiveActivity returns whether AS type name is of an IntransitiveActivity.
func isIntransitiveActivity(typeName string) bool {
switch typeName {
case ActivityArrive,
ActivityTravel,
ActivityQuestion:
return true
default:
return false
}
}