gotosocial/internal/typeutils/internaltoas.go
Tobi Smethurst 6f5c045284
Ap (#14)
Big restructuring and initial work on activitypub
2021-05-08 14:25:55 +02:00

261 lines
7.9 KiB
Go

/*
GoToSocial
Copyright (C) 2021 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 typeutils
import (
"crypto/x509"
"encoding/pem"
"net/url"
"github.com/go-fed/activity/streams"
"github.com/go-fed/activity/streams/vocab"
"github.com/superseriousbusiness/gotosocial/internal/gtsmodel"
)
// Converts a gts model account into an Activity Streams person type, following
// the spec laid out for mastodon here: https://docs.joinmastodon.org/spec/activitypub/
func (c *converter) AccountToAS(a *gtsmodel.Account) (vocab.ActivityStreamsPerson, error) {
person := streams.NewActivityStreamsPerson()
// id should be the activitypub URI of this user
// something like https://example.org/users/example_user
profileIDURI, err := url.Parse(a.URI)
if err != nil {
return nil, err
}
idProp := streams.NewJSONLDIdProperty()
idProp.SetIRI(profileIDURI)
person.SetJSONLDId(idProp)
// following
// The URI for retrieving a list of accounts this user is following
followingURI, err := url.Parse(a.FollowingURI)
if err != nil {
return nil, err
}
followingProp := streams.NewActivityStreamsFollowingProperty()
followingProp.SetIRI(followingURI)
person.SetActivityStreamsFollowing(followingProp)
// followers
// The URI for retrieving a list of this user's followers
followersURI, err := url.Parse(a.FollowersURI)
if err != nil {
return nil, err
}
followersProp := streams.NewActivityStreamsFollowersProperty()
followersProp.SetIRI(followersURI)
person.SetActivityStreamsFollowers(followersProp)
// inbox
// the activitypub inbox of this user for accepting messages
inboxURI, err := url.Parse(a.InboxURI)
if err != nil {
return nil, err
}
inboxProp := streams.NewActivityStreamsInboxProperty()
inboxProp.SetIRI(inboxURI)
person.SetActivityStreamsInbox(inboxProp)
// outbox
// the activitypub outbox of this user for serving messages
outboxURI, err := url.Parse(a.OutboxURI)
if err != nil {
return nil, err
}
outboxProp := streams.NewActivityStreamsOutboxProperty()
outboxProp.SetIRI(outboxURI)
person.SetActivityStreamsOutbox(outboxProp)
// featured posts
// Pinned posts.
featuredURI, err := url.Parse(a.FeaturedCollectionURI)
if err != nil {
return nil, err
}
featuredProp := streams.NewTootFeaturedProperty()
featuredProp.SetIRI(featuredURI)
person.SetTootFeatured(featuredProp)
// featuredTags
// NOT IMPLEMENTED
// preferredUsername
// Used for Webfinger lookup. Must be unique on the domain, and must correspond to a Webfinger acct: URI.
preferredUsernameProp := streams.NewActivityStreamsPreferredUsernameProperty()
preferredUsernameProp.SetXMLSchemaString(a.Username)
person.SetActivityStreamsPreferredUsername(preferredUsernameProp)
// name
// Used as profile display name.
nameProp := streams.NewActivityStreamsNameProperty()
if a.Username != "" {
nameProp.AppendXMLSchemaString(a.DisplayName)
} else {
nameProp.AppendXMLSchemaString(a.Username)
}
person.SetActivityStreamsName(nameProp)
// summary
// Used as profile bio.
if a.Note != "" {
summaryProp := streams.NewActivityStreamsSummaryProperty()
summaryProp.AppendXMLSchemaString(a.Note)
person.SetActivityStreamsSummary(summaryProp)
}
// url
// Used as profile link.
profileURL, err := url.Parse(a.URL)
if err != nil {
return nil, err
}
urlProp := streams.NewActivityStreamsUrlProperty()
urlProp.AppendIRI(profileURL)
person.SetActivityStreamsUrl(urlProp)
// manuallyApprovesFollowers
// Will be shown as a locked account.
// TODO: NOT IMPLEMENTED **YET** -- this needs to be added as an activitypub extension to https://github.com/go-fed/activity, see https://github.com/go-fed/activity/tree/master/astool
// discoverable
// Will be shown in the profile directory.
discoverableProp := streams.NewTootDiscoverableProperty()
discoverableProp.Set(a.Discoverable)
person.SetTootDiscoverable(discoverableProp)
// devices
// NOT IMPLEMENTED, probably won't implement
// alsoKnownAs
// Required for Move activity.
// TODO: NOT IMPLEMENTED **YET** -- this needs to be added as an activitypub extension to https://github.com/go-fed/activity, see https://github.com/go-fed/activity/tree/master/astool
// publicKey
// Required for signatures.
publicKeyProp := streams.NewW3IDSecurityV1PublicKeyProperty()
// create the public key
publicKey := streams.NewW3IDSecurityV1PublicKey()
// set ID for the public key
publicKeyIDProp := streams.NewJSONLDIdProperty()
publicKeyURI, err := url.Parse(a.PublicKeyURI)
if err != nil {
return nil, err
}
publicKeyIDProp.SetIRI(publicKeyURI)
publicKey.SetJSONLDId(publicKeyIDProp)
// set owner for the public key
publicKeyOwnerProp := streams.NewW3IDSecurityV1OwnerProperty()
publicKeyOwnerProp.SetIRI(profileIDURI)
publicKey.SetW3IDSecurityV1Owner(publicKeyOwnerProp)
// set the pem key itself
encodedPublicKey, err := x509.MarshalPKIXPublicKey(a.PublicKey)
if err != nil {
return nil, err
}
publicKeyBytes := pem.EncodeToMemory(&pem.Block{
Type: "PUBLIC KEY",
Bytes: encodedPublicKey,
})
publicKeyPEMProp := streams.NewW3IDSecurityV1PublicKeyPemProperty()
publicKeyPEMProp.Set(string(publicKeyBytes))
publicKey.SetW3IDSecurityV1PublicKeyPem(publicKeyPEMProp)
// append the public key to the public key property
publicKeyProp.AppendW3IDSecurityV1PublicKey(publicKey)
// set the public key property on the Person
person.SetW3IDSecurityV1PublicKey(publicKeyProp)
// tag
// TODO: Any tags used in the summary of this profile
// attachment
// Used for profile fields.
// TODO: The PropertyValue type has to be added: https://schema.org/PropertyValue
// endpoints
// NOT IMPLEMENTED -- this is for shared inbox which we don't use
// icon
// Used as profile avatar.
if a.AvatarMediaAttachmentID != "" {
iconProperty := streams.NewActivityStreamsIconProperty()
iconImage := streams.NewActivityStreamsImage()
avatar := &gtsmodel.MediaAttachment{}
if err := c.db.GetByID(a.AvatarMediaAttachmentID, avatar); err != nil {
return nil, err
}
mediaType := streams.NewActivityStreamsMediaTypeProperty()
mediaType.Set(avatar.File.ContentType)
iconImage.SetActivityStreamsMediaType(mediaType)
avatarURLProperty := streams.NewActivityStreamsUrlProperty()
avatarURL, err := url.Parse(avatar.URL)
if err != nil {
return nil, err
}
avatarURLProperty.AppendIRI(avatarURL)
iconImage.SetActivityStreamsUrl(avatarURLProperty)
iconProperty.AppendActivityStreamsImage(iconImage)
person.SetActivityStreamsIcon(iconProperty)
}
// image
// Used as profile header.
if a.HeaderMediaAttachmentID != "" {
headerProperty := streams.NewActivityStreamsImageProperty()
headerImage := streams.NewActivityStreamsImage()
header := &gtsmodel.MediaAttachment{}
if err := c.db.GetByID(a.HeaderMediaAttachmentID, header); err != nil {
return nil, err
}
mediaType := streams.NewActivityStreamsMediaTypeProperty()
mediaType.Set(header.File.ContentType)
headerImage.SetActivityStreamsMediaType(mediaType)
headerURLProperty := streams.NewActivityStreamsUrlProperty()
headerURL, err := url.Parse(header.URL)
if err != nil {
return nil, err
}
headerURLProperty.AppendIRI(headerURL)
headerImage.SetActivityStreamsUrl(headerURLProperty)
headerProperty.AppendActivityStreamsImage(headerImage)
}
return person, nil
}
func (c *converter) StatusToAS(s *gtsmodel.Status) (vocab.ActivityStreamsNote, error) {
return nil, nil
}