446 lines
14 KiB
Go
446 lines
14 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 fedi
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import (
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"context"
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"errors"
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"net/http"
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"net/url"
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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/db"
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"github.com/superseriousbusiness/gotosocial/internal/gtserror"
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"github.com/superseriousbusiness/gotosocial/internal/log"
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"github.com/superseriousbusiness/gotosocial/internal/paging"
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"github.com/superseriousbusiness/gotosocial/internal/typeutils"
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"github.com/superseriousbusiness/gotosocial/internal/util"
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)
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// InboxPost handles POST requests to a user's inbox for new activitypub messages.
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//
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// InboxPost returns true if the request was handled as an ActivityPub POST to an actor's inbox.
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// 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.
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//
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// 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.
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//
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// If the Actor was constructed with the Federated Protocol enabled, side effects will occur.
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//
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// If the Federated Protocol is not enabled, writes the http.StatusMethodNotAllowed status code in the response. No side effects occur.
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func (p *Processor) InboxPost(ctx context.Context, w http.ResponseWriter, r *http.Request) (bool, error) {
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return p.federator.FederatingActor().PostInbox(ctx, w, r)
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}
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// OutboxGet returns the serialized ActivityPub
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// collection of a local account's outbox, which
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// contains links to PUBLIC posts by this account.
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func (p *Processor) OutboxGet(
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ctx context.Context,
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requestedUser string,
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page *paging.Page,
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) (interface{}, gtserror.WithCode) {
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// Authenticate incoming request, getting related accounts.
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auth, errWithCode := p.authenticate(ctx, requestedUser)
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if errWithCode != nil {
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return nil, errWithCode
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}
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receivingAcct := auth.receivingAcct
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// Parse the collection ID object from account's followers URI.
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collectionID, err := url.Parse(receivingAcct.OutboxURI)
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if err != nil {
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err := gtserror.Newf("error parsing account outbox uri %s: %w", receivingAcct.OutboxURI, err)
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return nil, gtserror.NewErrorInternalError(err)
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}
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// Ensure we have stats for this account.
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if err := p.state.DB.PopulateAccountStats(ctx, receivingAcct); err != nil {
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err := gtserror.Newf("error getting stats for account %s: %w", receivingAcct.ID, err)
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return nil, gtserror.NewErrorInternalError(err)
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}
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var obj vocab.Type
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// Start the AS collection params.
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var params ap.CollectionParams
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params.ID = collectionID
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switch {
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case *receivingAcct.Settings.HideCollections ||
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receivingAcct.IsInstance():
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// If account that hides collections, or instance
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// account (ie., can't post / have relationships),
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// just return barest stub of collection.
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obj = ap.NewASOrderedCollection(params)
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case page == nil || auth.handshakingURI != nil:
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// If paging disabled, or we're currently handshaking
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// the requester, just return collection that links
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// to first page (i.e. path below), with no items.
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params.Total = util.Ptr(*receivingAcct.Stats.StatusesCount)
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params.First = new(paging.Page)
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params.Query = make(url.Values, 1)
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params.Query.Set("limit", "40") // enables paging
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obj = ap.NewASOrderedCollection(params)
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default:
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// Paging enabled.
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// Get page of full public statuses.
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statuses, err := p.state.DB.GetAccountStatuses(
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ctx,
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receivingAcct.ID,
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page.GetLimit(), // limit
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true, // excludeReplies
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true, // excludeReblogs
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page.GetMax(), // maxID
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page.GetMin(), // minID
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false, // mediaOnly
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true, // publicOnly
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)
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if err != nil && !errors.Is(err, db.ErrNoEntries) {
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err := gtserror.Newf("error getting statuses: %w", err)
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return nil, gtserror.NewErrorInternalError(err)
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}
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// page ID values.
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var lo, hi string
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if len(statuses) > 0 {
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// Get the lowest and highest
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// ID values, used for paging.
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lo = statuses[len(statuses)-1].ID
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hi = statuses[0].ID
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}
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// Reslice statuses dropping all those invisible to requester
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// (eg., local-only statuses, if the requester is remote).
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statuses, err = p.visFilter.StatusesVisible(
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ctx,
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auth.requestingAcct,
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statuses,
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)
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if err != nil {
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err := gtserror.Newf("error filtering statuses: %w", err)
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return nil, gtserror.NewErrorInternalError(err)
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}
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// Start building AS collection page params.
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params.Total = util.Ptr(*receivingAcct.Stats.StatusesCount)
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var pageParams ap.CollectionPageParams
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pageParams.CollectionParams = params
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// Current page details.
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pageParams.Current = page
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pageParams.Count = len(statuses)
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// Set linked next/prev parameters.
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pageParams.Next = page.Next(lo, hi)
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pageParams.Prev = page.Prev(lo, hi)
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// Set the collection item property builder function.
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pageParams.Append = func(i int, itemsProp ap.ItemsPropertyBuilder) {
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// Get status at index.
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status := statuses[i]
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// Derive statusable from status.
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statusable, err := p.converter.StatusToAS(ctx, status)
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if err != nil {
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log.Errorf(ctx, "error converting %s to statusable: %v", status.URI, err)
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return
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}
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// Derive create from statusable, using the IRI only.
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create := typeutils.WrapStatusableInCreate(statusable, true)
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// Add to item property.
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itemsProp.AppendActivityStreamsCreate(create)
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}
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// Build AS collection page object from params.
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obj = ap.NewASOrderedCollectionPage(pageParams)
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}
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// Serialize the prepared object.
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data, err := ap.Serialize(obj)
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if err != nil {
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err := gtserror.Newf("error serializing: %w", err)
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return nil, gtserror.NewErrorInternalError(err)
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}
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return data, nil
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}
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// FollowersGet returns the serialized ActivityPub
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// collection of a local account's followers collection,
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// which contains links to accounts following this account.
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func (p *Processor) FollowersGet(
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ctx context.Context,
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requestedUser string,
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page *paging.Page,
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) (interface{}, gtserror.WithCode) {
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// Authenticate incoming request, getting related accounts.
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auth, errWithCode := p.authenticate(ctx, requestedUser)
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if errWithCode != nil {
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return nil, errWithCode
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}
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receivingAcct := auth.receivingAcct
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// Parse the collection ID object from account's followers URI.
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collectionID, err := url.Parse(receivingAcct.FollowersURI)
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if err != nil {
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err := gtserror.Newf("error parsing account followers uri %s: %w", receivingAcct.FollowersURI, err)
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return nil, gtserror.NewErrorInternalError(err)
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}
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// Ensure we have stats for this account.
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if err := p.state.DB.PopulateAccountStats(ctx, receivingAcct); err != nil {
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err := gtserror.Newf("error getting stats for account %s: %w", receivingAcct.ID, err)
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return nil, gtserror.NewErrorInternalError(err)
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}
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var obj vocab.Type
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// Start the AS collection params.
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var params ap.CollectionParams
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params.ID = collectionID
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switch {
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case receivingAcct.IsInstance() ||
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*receivingAcct.Settings.HideCollections:
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// If account that hides collections, or instance
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// account (ie., can't post / have relationships),
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// just return barest stub of collection.
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obj = ap.NewASOrderedCollection(params)
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case page == nil || auth.handshakingURI != nil:
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// If paging disabled, or we're currently handshaking
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// the requester, just return collection that links
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// to first page (i.e. path below), with no items.
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params.Total = util.Ptr(*receivingAcct.Stats.FollowersCount)
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params.First = new(paging.Page)
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params.Query = make(url.Values, 1)
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params.Query.Set("limit", "40") // enables paging
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obj = ap.NewASOrderedCollection(params)
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default:
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// Paging enabled.
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// Get page of full follower objects with attached accounts.
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followers, err := p.state.DB.GetAccountFollowers(ctx, receivingAcct.ID, page)
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if err != nil {
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err := gtserror.Newf("error getting followers: %w", err)
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return nil, gtserror.NewErrorInternalError(err)
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}
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// page ID values.
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var lo, hi string
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if len(followers) > 0 {
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// Get the lowest and highest
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// ID values, used for paging.
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lo = followers[len(followers)-1].ID
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hi = followers[0].ID
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}
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// Start building AS collection page params.
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params.Total = util.Ptr(*receivingAcct.Stats.FollowersCount)
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var pageParams ap.CollectionPageParams
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pageParams.CollectionParams = params
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// Current page details.
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pageParams.Current = page
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pageParams.Count = len(followers)
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// Set linked next/prev parameters.
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pageParams.Next = page.Next(lo, hi)
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pageParams.Prev = page.Prev(lo, hi)
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// Set the collection item property builder function.
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pageParams.Append = func(i int, itemsProp ap.ItemsPropertyBuilder) {
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// Get follower URI at index.
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follow := followers[i]
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accURI := follow.Account.URI
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// Parse URL object from URI.
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iri, err := url.Parse(accURI)
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if err != nil {
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log.Errorf(ctx, "error parsing account uri %s: %v", accURI, err)
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return
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}
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// Add to item property.
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itemsProp.AppendIRI(iri)
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}
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// Build AS collection page object from params.
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obj = ap.NewASOrderedCollectionPage(pageParams)
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}
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// Serialize the prepared object.
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data, err := ap.Serialize(obj)
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if err != nil {
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err := gtserror.Newf("error serializing: %w", err)
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return nil, gtserror.NewErrorInternalError(err)
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}
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return data, nil
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}
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// FollowingGet returns the serialized ActivityPub
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// collection of a local account's following collection,
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// which contains links to accounts followed by this account.
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func (p *Processor) FollowingGet(ctx context.Context, requestedUser string, page *paging.Page) (interface{}, gtserror.WithCode) {
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// Authenticate incoming request, getting related accounts.
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auth, errWithCode := p.authenticate(ctx, requestedUser)
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if errWithCode != nil {
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return nil, errWithCode
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}
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receivingAcct := auth.receivingAcct
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// Parse collection ID from account's following URI.
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collectionID, err := url.Parse(receivingAcct.FollowingURI)
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if err != nil {
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err := gtserror.Newf("error parsing account following uri %s: %w", receivingAcct.FollowingURI, err)
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return nil, gtserror.NewErrorInternalError(err)
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}
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// Ensure we have stats for this account.
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if err := p.state.DB.PopulateAccountStats(ctx, receivingAcct); err != nil {
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err := gtserror.Newf("error getting stats for account %s: %w", receivingAcct.ID, err)
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return nil, gtserror.NewErrorInternalError(err)
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}
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var obj vocab.Type
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// Start AS collection params.
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var params ap.CollectionParams
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params.ID = collectionID
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switch {
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case receivingAcct.IsInstance() ||
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*receivingAcct.Settings.HideCollections:
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// If account that hides collections, or instance
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// account (ie., can't post / have relationships),
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// just return barest stub of collection.
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obj = ap.NewASOrderedCollection(params)
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case page == nil || auth.handshakingURI != nil:
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// If paging disabled, or we're currently handshaking
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// the requester, just return collection that links
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// to first page (i.e. path below), with no items.
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params.Total = util.Ptr(*receivingAcct.Stats.FollowingCount)
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params.First = new(paging.Page)
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params.Query = make(url.Values, 1)
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params.Query.Set("limit", "40") // enables paging
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obj = ap.NewASOrderedCollection(params)
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default:
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// Paging enabled.
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// Get page of full follower objects with attached accounts.
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follows, err := p.state.DB.GetAccountFollows(ctx, receivingAcct.ID, page)
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if err != nil {
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err := gtserror.Newf("error getting follows: %w", err)
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return nil, gtserror.NewErrorInternalError(err)
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}
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// page ID values.
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var lo, hi string
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if len(follows) > 0 {
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// Get the lowest and highest
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// ID values, used for paging.
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lo = follows[len(follows)-1].ID
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hi = follows[0].ID
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}
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// Start AS collection page params.
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params.Total = util.Ptr(*receivingAcct.Stats.FollowingCount)
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var pageParams ap.CollectionPageParams
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pageParams.CollectionParams = params
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// Current page details.
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pageParams.Current = page
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pageParams.Count = len(follows)
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// Set linked next/prev parameters.
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pageParams.Next = page.Next(lo, hi)
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pageParams.Prev = page.Prev(lo, hi)
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// Set the collection item property builder function.
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pageParams.Append = func(i int, itemsProp ap.ItemsPropertyBuilder) {
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// Get followed URI at index.
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follow := follows[i]
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accURI := follow.TargetAccount.URI
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// Parse URL object from URI.
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iri, err := url.Parse(accURI)
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if err != nil {
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log.Errorf(ctx, "error parsing account uri %s: %v", accURI, err)
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return
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}
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// Add to item property.
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itemsProp.AppendIRI(iri)
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}
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// Build AS collection page object from params.
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obj = ap.NewASOrderedCollectionPage(pageParams)
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}
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// Serialize the prepared object.
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data, err := ap.Serialize(obj)
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if err != nil {
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err := gtserror.Newf("error serializing: %w", err)
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return nil, gtserror.NewErrorInternalError(err)
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}
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return data, nil
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}
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// FeaturedCollectionGet returns an ordered collection of the requested username's Pinned posts.
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// The returned collection have an `items` property which contains an ordered list of status URIs.
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func (p *Processor) FeaturedCollectionGet(ctx context.Context, requestedUser string) (interface{}, gtserror.WithCode) {
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// Authenticate incoming request, getting related accounts.
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auth, errWithCode := p.authenticate(ctx, requestedUser)
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if errWithCode != nil {
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return nil, errWithCode
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}
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receivingAcct := auth.receivingAcct
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statuses, err := p.state.DB.GetAccountPinnedStatuses(ctx, receivingAcct.ID)
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if err != nil {
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if !errors.Is(err, db.ErrNoEntries) {
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return nil, gtserror.NewErrorInternalError(err)
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}
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}
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collection, err := p.converter.StatusesToASFeaturedCollection(ctx, receivingAcct.FeaturedCollectionURI, statuses)
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if err != nil {
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return nil, gtserror.NewErrorInternalError(err)
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}
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data, err := ap.Serialize(collection)
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if err != nil {
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return nil, gtserror.NewErrorInternalError(err)
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}
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return data, nil
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}
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