gotosocial/internal/processing/fromcommon.go
tobi e8a20f587c
[bugfix] Rework MultiError to wrap + unwrap errors properly (#2057)
* rework multierror a bit

* test multierror
2023-08-02 17:21:46 +02:00

574 lines
18 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 processing
import (
"context"
"errors"
"github.com/superseriousbusiness/gotosocial/internal/config"
"github.com/superseriousbusiness/gotosocial/internal/db"
"github.com/superseriousbusiness/gotosocial/internal/email"
"github.com/superseriousbusiness/gotosocial/internal/gtscontext"
"github.com/superseriousbusiness/gotosocial/internal/gtserror"
"github.com/superseriousbusiness/gotosocial/internal/gtsmodel"
"github.com/superseriousbusiness/gotosocial/internal/id"
"github.com/superseriousbusiness/gotosocial/internal/log"
"github.com/superseriousbusiness/gotosocial/internal/stream"
"github.com/superseriousbusiness/gotosocial/internal/timeline"
)
// timelineAndNotifyStatus processes the given new status and inserts it into
// the HOME and LIST timelines of accounts that follow the status author.
//
// It will also handle notifications for any mentions attached to the account, and
// also notifications for any local accounts that want to know when this account posts.
func (p *Processor) timelineAndNotifyStatus(ctx context.Context, status *gtsmodel.Status) error {
// Ensure status fully populated; including account, mentions, etc.
if err := p.state.DB.PopulateStatus(ctx, status); err != nil {
return gtserror.Newf("error populating status with id %s: %w", status.ID, err)
}
// Get local followers of the account that posted the status.
follows, err := p.state.DB.GetAccountLocalFollowers(ctx, status.AccountID)
if err != nil {
return gtserror.Newf("error getting local followers for account id %s: %w", status.AccountID, err)
}
// If the poster is also local, add a fake entry for them
// so they can see their own status in their timeline.
if status.Account.IsLocal() {
follows = append(follows, &gtsmodel.Follow{
AccountID: status.AccountID,
Account: status.Account,
Notify: func() *bool { b := false; return &b }(), // Account shouldn't notify itself.
ShowReblogs: func() *bool { b := true; return &b }(), // Account should show own reblogs.
})
}
// Timeline the status for each local follower of this account.
// This will also handle notifying any followers with notify
// set to true on their follow.
if err := p.timelineAndNotifyStatusForFollowers(ctx, status, follows); err != nil {
return gtserror.Newf("error timelining status %s for followers: %w", status.ID, err)
}
// Notify each local account that's mentioned by this status.
if err := p.notifyStatusMentions(ctx, status); err != nil {
return gtserror.Newf("error notifying status mentions for status %s: %w", status.ID, err)
}
return nil
}
func (p *Processor) timelineAndNotifyStatusForFollowers(ctx context.Context, status *gtsmodel.Status, follows []*gtsmodel.Follow) error {
var (
errs = gtserror.NewMultiError(len(follows))
boost = status.BoostOfID != ""
reply = status.InReplyToURI != ""
)
for _, follow := range follows {
if sr := follow.ShowReblogs; boost && (sr == nil || !*sr) {
// This is a boost, but this follower
// doesn't want to see those from this
// account, so just skip everything.
continue
}
// Add status to each list that this follow
// is included in, and stream it if applicable.
listEntries, err := p.state.DB.GetListEntriesForFollowID(
// We only need the list IDs.
gtscontext.SetBarebones(ctx),
follow.ID,
)
if err != nil && !errors.Is(err, db.ErrNoEntries) {
errs.Appendf("error list timelining status: %w", err)
continue
}
for _, listEntry := range listEntries {
if _, err := p.timelineStatus(
ctx,
p.state.Timelines.List.IngestOne,
listEntry.ListID, // list timelines are keyed by list ID
follow.Account,
status,
stream.TimelineList+":"+listEntry.ListID, // key streamType to this specific list
); err != nil {
errs.Appendf("error list timelining status: %w", err)
continue
}
}
// Add status to home timeline for this
// follower, and stream it if applicable.
if timelined, err := p.timelineStatus(
ctx,
p.state.Timelines.Home.IngestOne,
follow.AccountID, // home timelines are keyed by account ID
follow.Account,
status,
stream.TimelineHome,
); err != nil {
errs.Appendf("error home timelining status: %w", err)
continue
} else if !timelined {
// Status wasn't added to home tomeline,
// so we shouldn't notify it either.
continue
}
if n := follow.Notify; n == nil || !*n {
// This follower doesn't have notifications
// set for this account's new posts, so bail.
continue
}
if boost || reply {
// Don't notify for boosts or replies.
continue
}
// If we reach here, we know:
//
// - This follower wants to be notified when this account posts.
// - This is a top-level post (not a reply).
// - This is not a boost of another post.
// - The post is visible in this follower's home timeline.
//
// That means we can officially notify this one.
if err := p.notify(
ctx,
gtsmodel.NotificationStatus,
follow.AccountID,
status.AccountID,
status.ID,
); err != nil {
errs.Appendf("error notifying account %s about new status: %w", follow.AccountID, err)
}
}
if err := errs.Combine(); err != nil {
return gtserror.Newf("%w", err)
}
return nil
}
// timelineStatus uses the provided ingest function to put the given
// status in a timeline with the given ID, if it's timelineable.
//
// If the status was inserted into the timeline, true will be returned
// + it will also be streamed to the user using the given streamType.
func (p *Processor) timelineStatus(
ctx context.Context,
ingest func(context.Context, string, timeline.Timelineable) (bool, error),
timelineID string,
account *gtsmodel.Account,
status *gtsmodel.Status,
streamType string,
) (bool, error) {
// Make sure the status is timelineable.
// This works for both home and list timelines.
if timelineable, err := p.filter.StatusHomeTimelineable(ctx, account, status); err != nil {
err = gtserror.Newf("error getting timelineability for status for timeline with id %s: %w", account.ID, err)
return false, err
} else if !timelineable {
// Nothing to do.
return false, nil
}
// Ingest status into given timeline using provided function.
if inserted, err := ingest(ctx, timelineID, status); err != nil {
err = gtserror.Newf("error ingesting status %s: %w", status.ID, err)
return false, err
} else if !inserted {
// Nothing more to do.
return false, nil
}
// The status was inserted so stream it to the user.
apiStatus, err := p.tc.StatusToAPIStatus(ctx, status, account)
if err != nil {
err = gtserror.Newf("error converting status %s to frontend representation: %w", status.ID, err)
return true, err
}
if err := p.stream.Update(apiStatus, account, []string{streamType}); err != nil {
err = gtserror.Newf("error streaming update for status %s: %w", status.ID, err)
return true, err
}
return true, nil
}
func (p *Processor) notifyStatusMentions(ctx context.Context, status *gtsmodel.Status) error {
errs := gtserror.NewMultiError(len(status.Mentions))
for _, m := range status.Mentions {
if err := p.notify(
ctx,
gtsmodel.NotificationMention,
m.TargetAccountID,
m.OriginAccountID,
m.StatusID,
); err != nil {
errs.Append(err)
}
}
if err := errs.Combine(); err != nil {
return gtserror.Newf("%w", err)
}
return nil
}
func (p *Processor) notifyFollowRequest(ctx context.Context, followRequest *gtsmodel.FollowRequest) error {
return p.notify(
ctx,
gtsmodel.NotificationFollowRequest,
followRequest.TargetAccountID,
followRequest.AccountID,
"",
)
}
func (p *Processor) notifyFollow(ctx context.Context, follow *gtsmodel.Follow, targetAccount *gtsmodel.Account) error {
// Remove previous follow request notification, if it exists.
prevNotif, err := p.state.DB.GetNotification(
gtscontext.SetBarebones(ctx),
gtsmodel.NotificationFollowRequest,
targetAccount.ID,
follow.AccountID,
"",
)
if err != nil && !errors.Is(err, db.ErrNoEntries) {
// Proper error while checking.
return gtserror.Newf("db error checking for previous follow request notification: %w", err)
}
if prevNotif != nil {
// Previous notification existed, delete.
if err := p.state.DB.DeleteNotificationByID(ctx, prevNotif.ID); err != nil {
return gtserror.Newf("db error removing previous follow request notification %s: %w", prevNotif.ID, err)
}
}
// Now notify the follow itself.
return p.notify(
ctx,
gtsmodel.NotificationFollow,
targetAccount.ID,
follow.AccountID,
"",
)
}
func (p *Processor) notifyFave(ctx context.Context, fave *gtsmodel.StatusFave) error {
if fave.TargetAccountID == fave.AccountID {
// Self-fave, nothing to do.
return nil
}
return p.notify(
ctx,
gtsmodel.NotificationFave,
fave.TargetAccountID,
fave.AccountID,
fave.StatusID,
)
}
func (p *Processor) notifyAnnounce(ctx context.Context, status *gtsmodel.Status) error {
if status.BoostOfID == "" {
// Not a boost, nothing to do.
return nil
}
if status.BoostOfAccountID == status.AccountID {
// Self-boost, nothing to do.
return nil
}
return p.notify(
ctx,
gtsmodel.NotificationReblog,
status.BoostOfAccountID,
status.AccountID,
status.ID,
)
}
func (p *Processor) notify(
ctx context.Context,
notificationType gtsmodel.NotificationType,
targetAccountID string,
originAccountID string,
statusID string,
) error {
targetAccount, err := p.state.DB.GetAccountByID(ctx, targetAccountID)
if err != nil {
return gtserror.Newf("error getting target account %s: %w", targetAccountID, err)
}
if !targetAccount.IsLocal() {
// Nothing to do.
return nil
}
// Make sure a notification doesn't
// already exist with these params.
if _, err := p.state.DB.GetNotification(
ctx,
notificationType,
targetAccountID,
originAccountID,
statusID,
); err == nil {
// Notification exists, nothing to do.
return nil
} else if !errors.Is(err, db.ErrNoEntries) {
// Real error.
return gtserror.Newf("error checking existence of notification: %w", err)
}
// Notification doesn't yet exist, so
// we need to create + store one.
notif := &gtsmodel.Notification{
ID: id.NewULID(),
NotificationType: notificationType,
TargetAccountID: targetAccountID,
OriginAccountID: originAccountID,
StatusID: statusID,
}
if err := p.state.DB.PutNotification(ctx, notif); err != nil {
return gtserror.Newf("error putting notification in database: %w", err)
}
// Stream notification to the user.
apiNotif, err := p.tc.NotificationToAPINotification(ctx, notif)
if err != nil {
return gtserror.Newf("error converting notification to api representation: %w", err)
}
if err := p.stream.Notify(apiNotif, targetAccount); err != nil {
return gtserror.Newf("error streaming notification to account: %w", err)
}
return nil
}
// wipeStatus contains common logic used to totally delete a status
// + all its attachments, notifications, boosts, and timeline entries.
func (p *Processor) wipeStatus(ctx context.Context, statusToDelete *gtsmodel.Status, deleteAttachments bool) error {
// either delete all attachments for this status, or simply
// unattach all attachments for this status, so they'll be
// cleaned later by a separate process; reason to unattach rather
// than delete is that the poster might want to reattach them
// to another status immediately (in case of delete + redraft)
if deleteAttachments {
// todo: p.state.DB.DeleteAttachmentsForStatus
for _, a := range statusToDelete.AttachmentIDs {
if err := p.media.Delete(ctx, a); err != nil {
return err
}
}
} else {
// todo: p.state.DB.UnattachAttachmentsForStatus
for _, a := range statusToDelete.AttachmentIDs {
if _, err := p.media.Unattach(ctx, statusToDelete.Account, a); err != nil {
return err
}
}
}
// delete all mention entries generated by this status
// todo: p.state.DB.DeleteMentionsForStatus
for _, id := range statusToDelete.MentionIDs {
if err := p.state.DB.DeleteMentionByID(ctx, id); err != nil {
return err
}
}
// delete all notification entries generated by this status
if err := p.state.DB.DeleteNotificationsForStatus(ctx, statusToDelete.ID); err != nil {
return err
}
// delete all bookmarks that point to this status
if err := p.state.DB.DeleteStatusBookmarksForStatus(ctx, statusToDelete.ID); err != nil {
return err
}
// delete all faves of this status
if err := p.state.DB.DeleteStatusFavesForStatus(ctx, statusToDelete.ID); err != nil {
return err
}
// delete all boosts for this status + remove them from timelines
if boosts, err := p.state.DB.GetStatusReblogs(ctx, statusToDelete); err == nil {
for _, b := range boosts {
if err := p.deleteStatusFromTimelines(ctx, b.ID); err != nil {
return err
}
if err := p.state.DB.DeleteStatusByID(ctx, b.ID); err != nil {
return err
}
}
}
// delete this status from any and all timelines
if err := p.deleteStatusFromTimelines(ctx, statusToDelete.ID); err != nil {
return err
}
// delete the status itself
return p.state.DB.DeleteStatusByID(ctx, statusToDelete.ID)
}
// deleteStatusFromTimelines completely removes the given status from all timelines.
// It will also stream deletion of the status to all open streams.
func (p *Processor) deleteStatusFromTimelines(ctx context.Context, statusID string) error {
if err := p.state.Timelines.Home.WipeItemFromAllTimelines(ctx, statusID); err != nil {
return err
}
if err := p.state.Timelines.List.WipeItemFromAllTimelines(ctx, statusID); err != nil {
return err
}
return p.stream.Delete(statusID)
}
// invalidateStatusFromTimelines does cache invalidation on the given status by
// unpreparing it from all timelines, forcing it to be prepared again (with updated
// stats, boost counts, etc) next time it's fetched by the timeline owner. This goes
// both for the status itself, and for any boosts of the status.
func (p *Processor) invalidateStatusFromTimelines(ctx context.Context, statusID string) {
if err := p.state.Timelines.Home.UnprepareItemFromAllTimelines(ctx, statusID); err != nil {
log.
WithContext(ctx).
WithField("statusID", statusID).
Errorf("error unpreparing status from home timelines: %v", err)
}
if err := p.state.Timelines.List.UnprepareItemFromAllTimelines(ctx, statusID); err != nil {
log.
WithContext(ctx).
WithField("statusID", statusID).
Errorf("error unpreparing status from list timelines: %v", err)
}
}
/*
EMAIL FUNCTIONS
*/
func (p *Processor) emailReport(ctx context.Context, report *gtsmodel.Report) error {
instance, err := p.state.DB.GetInstance(ctx, config.GetHost())
if err != nil {
return gtserror.Newf("error getting instance: %w", err)
}
toAddresses, err := p.state.DB.GetInstanceModeratorAddresses(ctx)
if err != nil {
if errors.Is(err, db.ErrNoEntries) {
// No registered moderator addresses.
return nil
}
return gtserror.Newf("error getting instance moderator addresses: %w", err)
}
if report.Account == nil {
report.Account, err = p.state.DB.GetAccountByID(ctx, report.AccountID)
if err != nil {
return gtserror.Newf("error getting report account: %w", err)
}
}
if report.TargetAccount == nil {
report.TargetAccount, err = p.state.DB.GetAccountByID(ctx, report.TargetAccountID)
if err != nil {
return gtserror.Newf("error getting report target account: %w", err)
}
}
reportData := email.NewReportData{
InstanceURL: instance.URI,
InstanceName: instance.Title,
ReportURL: instance.URI + "/settings/admin/reports/" + report.ID,
ReportDomain: report.Account.Domain,
ReportTargetDomain: report.TargetAccount.Domain,
}
if err := p.emailSender.SendNewReportEmail(toAddresses, reportData); err != nil {
return gtserror.Newf("error emailing instance moderators: %w", err)
}
return nil
}
func (p *Processor) emailReportClosed(ctx context.Context, report *gtsmodel.Report) error {
user, err := p.state.DB.GetUserByAccountID(ctx, report.Account.ID)
if err != nil {
return gtserror.Newf("db error getting user: %w", err)
}
if user.ConfirmedAt.IsZero() || !*user.Approved || *user.Disabled || user.Email == "" {
// Only email users who:
// - are confirmed
// - are approved
// - are not disabled
// - have an email address
return nil
}
instance, err := p.state.DB.GetInstance(ctx, config.GetHost())
if err != nil {
return gtserror.Newf("db error getting instance: %w", err)
}
if report.Account == nil {
report.Account, err = p.state.DB.GetAccountByID(ctx, report.AccountID)
if err != nil {
return gtserror.Newf("error getting report account: %w", err)
}
}
if report.TargetAccount == nil {
report.TargetAccount, err = p.state.DB.GetAccountByID(ctx, report.TargetAccountID)
if err != nil {
return gtserror.Newf("error getting report target account: %w", err)
}
}
reportClosedData := email.ReportClosedData{
Username: report.Account.Username,
InstanceURL: instance.URI,
InstanceName: instance.Title,
ReportTargetUsername: report.TargetAccount.Username,
ReportTargetDomain: report.TargetAccount.Domain,
ActionTakenComment: report.ActionTaken,
}
return p.emailSender.SendReportClosedEmail(user.Email, reportClosedData)
}