gtsocial-umbx

owns.go (6451B)

---

 // 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 federatingdb
 
 import (
 	"context"
 	"errors"
 	"fmt"
 	"net/url"
 
 	"codeberg.org/gruf/go-kv"
 	"github.com/superseriousbusiness/gotosocial/internal/config"
 	"github.com/superseriousbusiness/gotosocial/internal/db"
 	"github.com/superseriousbusiness/gotosocial/internal/gtscontext"
 	"github.com/superseriousbusiness/gotosocial/internal/gtsmodel"
 	"github.com/superseriousbusiness/gotosocial/internal/log"
 	"github.com/superseriousbusiness/gotosocial/internal/uris"
 )
 
 // Owns returns true if the IRI belongs to this instance, and if
 // the database has an entry for the IRI.
 // The library makes this call only after acquiring a lock first.
 func (f *federatingDB) Owns(ctx context.Context, id *url.URL) (bool, error) {
 	l := log.WithContext(ctx).
 		WithFields(kv.Fields{
 			{"id", id},
 		}...)
 	l.Debug("entering Owns")
 
 	// if the id host isn't this instance host, we don't own this IRI
 	if host := config.GetHost(); id.Host != host {
 		l.Tracef("we DO NOT own activity because the host is %s not %s", id.Host, host)
 		return false, nil
 	}
 
 	// todo: refactor the below; make sure we use
 	// proper db functions for everything, and
 	// preferably clean up by calling subfuncs
 	// (like we now do for ownsLike).
 
 	// apparently it belongs to this host, so what *is* it?
 	// check if it's a status, eg /users/example_username/statuses/SOME_UUID_OF_A_STATUS
 	if uris.IsStatusesPath(id) {
 		_, uid, err := uris.ParseStatusesPath(id)
 		if err != nil {
 			return false, fmt.Errorf("error parsing statuses path for url %s: %s", id.String(), err)
 		}
 		status, err := f.state.DB.GetStatusByURI(ctx, uid)
 		if err != nil {
 			if err == db.ErrNoEntries {
 				// there are no entries for this status
 				return false, nil
 			}
 			// an actual error happened
 			return false, fmt.Errorf("database error fetching status with id %s: %s", uid, err)
 		}
 		return *status.Local, nil
 	}
 
 	if uris.IsUserPath(id) {
 		username, err := uris.ParseUserPath(id)
 		if err != nil {
 			return false, fmt.Errorf("error parsing statuses path for url %s: %s", id.String(), err)
 		}
 		if _, err := f.state.DB.GetAccountByUsernameDomain(ctx, username, ""); err != nil {
 			if err == db.ErrNoEntries {
 				// there are no entries for this username
 				return false, nil
 			}
 			// an actual error happened
 			return false, fmt.Errorf("database error fetching account with username %s: %s", username, err)
 		}
 		l.Debugf("we own url %s", id.String())
 		return true, nil
 	}
 
 	if uris.IsFollowersPath(id) {
 		username, err := uris.ParseFollowersPath(id)
 		if err != nil {
 			return false, fmt.Errorf("error parsing statuses path for url %s: %s", id.String(), err)
 		}
 		if _, err := f.state.DB.GetAccountByUsernameDomain(ctx, username, ""); err != nil {
 			if err == db.ErrNoEntries {
 				// there are no entries for this username
 				return false, nil
 			}
 			// an actual error happened
 			return false, fmt.Errorf("database error fetching account with username %s: %s", username, err)
 		}
 		l.Debugf("we own url %s", id.String())
 		return true, nil
 	}
 
 	if uris.IsFollowingPath(id) {
 		username, err := uris.ParseFollowingPath(id)
 		if err != nil {
 			return false, fmt.Errorf("error parsing statuses path for url %s: %s", id.String(), err)
 		}
 		if _, err := f.state.DB.GetAccountByUsernameDomain(ctx, username, ""); err != nil {
 			if err == db.ErrNoEntries {
 				// there are no entries for this username
 				return false, nil
 			}
 			// an actual error happened
 			return false, fmt.Errorf("database error fetching account with username %s: %s", username, err)
 		}
 		l.Debugf("we own url %s", id.String())
 		return true, nil
 	}
 
 	if uris.IsLikePath(id) {
 		return f.ownsLike(ctx, id)
 	}
 
 	if uris.IsBlockPath(id) {
 		username, blockID, err := uris.ParseBlockPath(id)
 		if err != nil {
 			return false, fmt.Errorf("error parsing block path for url %s: %s", id.String(), err)
 		}
 		if _, err := f.state.DB.GetAccountByUsernameDomain(ctx, username, ""); err != nil {
 			if err == db.ErrNoEntries {
 				// there are no entries for this username
 				return false, nil
 			}
 			// an actual error happened
 			return false, fmt.Errorf("database error fetching account with username %s: %s", username, err)
 		}
 		if err := f.state.DB.GetByID(ctx, blockID, &gtsmodel.Block{}); err != nil {
 			if err == db.ErrNoEntries {
 				// there are no entries
 				return false, nil
 			}
 			// an actual error happened
 			return false, fmt.Errorf("database error fetching block with id %s: %s", blockID, err)
 		}
 		l.Debugf("we own url %s", id.String())
 		return true, nil
 	}
 
 	return false, fmt.Errorf("could not match activityID: %s", id.String())
 }
 
 func (f *federatingDB) ownsLike(ctx context.Context, uri *url.URL) (bool, error) {
 	username, id, err := uris.ParseLikedPath(uri)
 	if err != nil {
 		return false, fmt.Errorf("error parsing Like path for url %s: %w", uri.String(), err)
 	}
 
 	// We're only checking for existence,
 	// so use barebones context.
 	bbCtx := gtscontext.SetBarebones(ctx)
 
 	if _, err := f.state.DB.GetAccountByUsernameDomain(bbCtx, username, ""); err != nil {
 		if errors.Is(err, db.ErrNoEntries) {
 			// No entries for this acct,
 			// we don't own this item.
 			return false, nil
 		}
 
 		// Actual error.
 		return false, fmt.Errorf("database error fetching account with username %s: %w", username, err)
 	}
 
 	if _, err := f.state.DB.GetStatusFaveByID(bbCtx, id); err != nil {
 		if errors.Is(err, db.ErrNoEntries) {
 			// No entries for this ID,
 			// we don't own this item.
 			return false, nil
 		}
 
 		// Actual error.
 		return false, fmt.Errorf("database error fetching status fave with id %s: %w", id, err)
 	}
 
 	log.Tracef(ctx, "we own Like %s", uri.String())
 	return true, nil
 }