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/*
GoToSocial
Copyright (C) 2021-2023 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 fedi
import (
"context"
"errors"
"fmt"
"net/http"
"net/url"
"github.com/superseriousbusiness/activity/streams"
"github.com/superseriousbusiness/gotosocial/internal/db"
"github.com/superseriousbusiness/gotosocial/internal/gtserror"
)
// InboxPost handles POST requests to a user's inbox for new activitypub messages.
//
// InboxPost returns true if the request was handled as an ActivityPub POST to an actor's inbox.
// If false, the request was not an ActivityPub request and may still be handled by the caller in another way, such as serving a web page.
//
// If the error is nil, then the ResponseWriter's headers and response has already been written. If a non-nil error is returned, then no response has been written.
//
// If the Actor was constructed with the Federated Protocol enabled, side effects will occur.
//
// If the Federated Protocol is not enabled, writes the http.StatusMethodNotAllowed status code in the response. No side effects occur.
func (p *Processor) InboxPost(ctx context.Context, w http.ResponseWriter, r *http.Request) (bool, error) {
return p.federator.FederatingActor().PostInbox(ctx, w, r)
}
// OutboxGet returns the activitypub representation of a local user's outbox.
// This contains links to PUBLIC posts made by this user.
func (p *Processor) OutboxGet(ctx context.Context, requestedUsername string, page bool, maxID string, minID string) (interface{}, gtserror.WithCode) {
requestedAccount, _, errWithCode := p.authenticate(ctx, requestedUsername)
if errWithCode != nil {
return nil, errWithCode
}
var data map[string]interface{}
// There are two scenarios:
// 1. we're asked for the whole collection and not a page -- we can just return the collection, with no items, but a link to 'first' page.
// 2. we're asked for a specific page; this can be either the first page or any other page
if !page {
/*
scenario 1: return the collection with no items
we want something that looks like this:
{
"@context": "https://www.w3.org/ns/activitystreams",
"id": "https://example.org/users/whatever/outbox",
"type": "OrderedCollection",
"first": "https://example.org/users/whatever/outbox?page=true",
"last": "https://example.org/users/whatever/outbox?min_id=0&page=true"
}
*/
collection, err := p.tc.OutboxToASCollection(ctx, requestedAccount.OutboxURI)
if err != nil {
return nil, gtserror.NewErrorInternalError(err)
}
data, err = streams.Serialize(collection)
if err != nil {
return nil, gtserror.NewErrorInternalError(err)
}
return data, nil
}
// scenario 2 -- get the requested page
// limit pages to 30 entries per page
publicStatuses, err := p.state.DB.GetAccountStatuses(ctx, requestedAccount.ID, 30, true, true, maxID, minID, false, true)
if err != nil && !errors.Is(err, db.ErrNoEntries) {
return nil, gtserror.NewErrorInternalError(err)
}
outboxPage, err := p.tc.StatusesToASOutboxPage(ctx, requestedAccount.OutboxURI, maxID, minID, publicStatuses)
if err != nil {
return nil, gtserror.NewErrorInternalError(err)
}
data, err = streams.Serialize(outboxPage)
if err != nil {
return nil, gtserror.NewErrorInternalError(err)
}
return data, nil
}
// FollowersGet handles the getting of a fedi/activitypub representation of a user/account's followers, performing appropriate
// authentication before returning a JSON serializable interface to the caller.
func (p *Processor) FollowersGet(ctx context.Context, requestedUsername string) (interface{}, gtserror.WithCode) {
requestedAccount, _, errWithCode := p.authenticate(ctx, requestedUsername)
if errWithCode != nil {
return nil, errWithCode
}
requestedAccountURI, err := url.Parse(requestedAccount.URI)
if err != nil {
return nil, gtserror.NewErrorInternalError(fmt.Errorf("error parsing url %s: %s", requestedAccount.URI, err))
}
requestedFollowers, err := p.federator.FederatingDB().Followers(ctx, requestedAccountURI)
if err != nil {
return nil, gtserror.NewErrorInternalError(fmt.Errorf("error fetching followers for uri %s: %s", requestedAccountURI.String(), err))
}
data, err := streams.Serialize(requestedFollowers)
if err != nil {
return nil, gtserror.NewErrorInternalError(err)
}
return data, nil
}
// FollowingGet handles the getting of a fedi/activitypub representation of a user/account's following, performing appropriate
// authentication before returning a JSON serializable interface to the caller.
func (p *Processor) FollowingGet(ctx context.Context, requestedUsername string) (interface{}, gtserror.WithCode) {
requestedAccount, _, errWithCode := p.authenticate(ctx, requestedUsername)
if errWithCode != nil {
return nil, errWithCode
}
requestedAccountURI, err := url.Parse(requestedAccount.URI)
if err != nil {
return nil, gtserror.NewErrorInternalError(fmt.Errorf("error parsing url %s: %s", requestedAccount.URI, err))
}
requestedFollowing, err := p.federator.FederatingDB().Following(ctx, requestedAccountURI)
if err != nil {
return nil, gtserror.NewErrorInternalError(fmt.Errorf("error fetching following for uri %s: %s", requestedAccountURI.String(), err))
}
data, err := streams.Serialize(requestedFollowing)
if err != nil {
return nil, gtserror.NewErrorInternalError(err)
}
return data, nil
}
// FeaturedCollectionGet returns an ordered collection of the requested username's Pinned posts.
// The returned collection have an `items` property which contains an ordered list of status URIs.
func (p *Processor) FeaturedCollectionGet(ctx context.Context, requestedUsername string) (interface{}, gtserror.WithCode) {
requestedAccount, _, errWithCode := p.authenticate(ctx, requestedUsername)
if errWithCode != nil {
return nil, errWithCode
}
statuses, err := p.state.DB.GetAccountPinnedStatuses(ctx, requestedAccount.ID)
if err != nil {
if !errors.Is(err, db.ErrNoEntries) {
return nil, gtserror.NewErrorInternalError(err)
}
}
collection, err := p.tc.StatusesToASFeaturedCollection(ctx, requestedAccount.FeaturedCollectionURI, statuses)
if err != nil {
return nil, gtserror.NewErrorInternalError(err)
}
data, err := streams.Serialize(collection)
if err != nil {
return nil, gtserror.NewErrorInternalError(err)
}
return data, nil
}
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