mirror of
https://github.com/superseriousbusiness/gotosocial.git
synced 2024-12-13 10:30:45 +01:00
ebec95a522
* [bugfix] Lock when checking/creating notifs to avoid race * test notif spam
196 lines
6.9 KiB
Go
196 lines
6.9 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 status
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import (
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"context"
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"errors"
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"fmt"
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"time"
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apimodel "github.com/superseriousbusiness/gotosocial/internal/api/model"
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"github.com/superseriousbusiness/gotosocial/internal/gtserror"
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"github.com/superseriousbusiness/gotosocial/internal/gtsmodel"
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)
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const allowedPinnedCount = 10
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// getPinnableStatus fetches targetStatusID status and ensures that requestingAccountID
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// can pin or unpin it.
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//
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// It checks:
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// - Status is visible to requesting account.
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// - Status belongs to requesting account.
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// - Status is public, unlisted, or followers-only.
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// - Status is not a boost.
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func (p *Processor) getPinnableStatus(ctx context.Context, requestingAccount *gtsmodel.Account, targetStatusID string) (*gtsmodel.Status, gtserror.WithCode) {
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targetStatus, errWithCode := p.c.GetVisibleTargetStatus(ctx,
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requestingAccount,
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targetStatusID,
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nil, // default freshness
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)
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if errWithCode != nil {
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return nil, errWithCode
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}
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if targetStatus.AccountID != requestingAccount.ID {
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err := fmt.Errorf("status %s does not belong to account %s", targetStatusID, requestingAccount.ID)
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return nil, gtserror.NewErrorUnprocessableEntity(err, err.Error())
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}
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if targetStatus.Visibility == gtsmodel.VisibilityDirect {
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err := errors.New("cannot pin direct messages")
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return nil, gtserror.NewErrorUnprocessableEntity(err, err.Error())
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}
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if targetStatus.BoostOfID != "" {
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err := errors.New("cannot pin boosts")
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return nil, gtserror.NewErrorUnprocessableEntity(err, err.Error())
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}
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return targetStatus, nil
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}
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// PinCreate pins the target status to the top of requestingAccount's profile, if possible.
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//
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// Conditions for a pin to work:
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// - Status belongs to requesting account.
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// - Status is public, unlisted, or followers-only.
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// - Status is not a boost.
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// - Status is not already pinnd.
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// - Limit of pinned statuses not yet met or exceeded.
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//
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// If the conditions can't be met, then code 422 Unprocessable Entity will be returned.
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func (p *Processor) PinCreate(ctx context.Context, requestingAccount *gtsmodel.Account, targetStatusID string) (*apimodel.Status, gtserror.WithCode) {
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targetStatus, errWithCode := p.getPinnableStatus(ctx, requestingAccount, targetStatusID)
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if errWithCode != nil {
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return nil, errWithCode
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}
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// Get a lock on this account.
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unlock := p.state.ProcessingLocks.Lock(requestingAccount.URI)
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defer unlock()
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if !targetStatus.PinnedAt.IsZero() {
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err := errors.New("status already pinned")
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return nil, gtserror.NewErrorUnprocessableEntity(err, err.Error())
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}
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// Ensure account stats populated.
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if requestingAccount.Stats == nil {
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if err := p.state.DB.PopulateAccountStats(ctx, requestingAccount); err != nil {
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err = gtserror.Newf("db error getting account stats: %w", err)
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return nil, gtserror.NewErrorInternalError(err)
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}
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}
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pinnedCount := *requestingAccount.Stats.StatusesPinnedCount
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if pinnedCount >= allowedPinnedCount {
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err := fmt.Errorf("status pin limit exceeded, you've already pinned %d status(es) out of %d", pinnedCount, allowedPinnedCount)
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return nil, gtserror.NewErrorUnprocessableEntity(err, err.Error())
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}
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targetStatus.PinnedAt = time.Now()
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if err := p.state.DB.UpdateStatus(ctx, targetStatus, "pinned_at"); err != nil {
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err = gtserror.Newf("db error pinning status: %w", err)
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return nil, gtserror.NewErrorInternalError(err)
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}
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// Update account stats.
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*requestingAccount.Stats.StatusesPinnedCount++
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if err := p.state.DB.UpdateAccountStats(
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ctx,
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requestingAccount.Stats,
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"statuses_pinned_count",
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); err != nil {
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err = gtserror.Newf("db error updating stats: %w", err)
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return nil, gtserror.NewErrorInternalError(err)
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}
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if err := p.c.InvalidateTimelinedStatus(ctx, requestingAccount.ID, targetStatusID); err != nil {
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err = gtserror.Newf("error invalidating status from timelines: %w", err)
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return nil, gtserror.NewErrorInternalError(err)
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}
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return p.c.GetAPIStatus(ctx, requestingAccount, targetStatus)
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}
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// PinRemove unpins the target status from the top of requestingAccount's profile, if possible.
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//
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// Conditions for an unpin to work:
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// - Status belongs to requesting account.
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// - Status is public, unlisted, or followers-only.
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// - Status is not a boost.
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//
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// If the conditions can't be met, then code 422 Unprocessable Entity will be returned.
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//
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// Unlike with PinCreate, statuses that are already unpinned will not return 422, but just do
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// nothing and return the api model representation of the status, to conform to the masto API.
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func (p *Processor) PinRemove(ctx context.Context, requestingAccount *gtsmodel.Account, targetStatusID string) (*apimodel.Status, gtserror.WithCode) {
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targetStatus, errWithCode := p.getPinnableStatus(ctx, requestingAccount, targetStatusID)
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if errWithCode != nil {
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return nil, errWithCode
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}
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// Get a lock on this account.
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unlock := p.state.ProcessingLocks.Lock(requestingAccount.URI)
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defer unlock()
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if targetStatus.PinnedAt.IsZero() {
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// Status already not pinned.
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return p.c.GetAPIStatus(ctx, requestingAccount, targetStatus)
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}
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// Ensure account stats populated.
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if requestingAccount.Stats == nil {
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if err := p.state.DB.PopulateAccountStats(ctx, requestingAccount); err != nil {
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err = gtserror.Newf("db error getting account stats: %w", err)
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return nil, gtserror.NewErrorInternalError(err)
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}
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}
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targetStatus.PinnedAt = time.Time{}
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if err := p.state.DB.UpdateStatus(ctx, targetStatus, "pinned_at"); err != nil {
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err = gtserror.Newf("db error unpinning status: %w", err)
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return nil, gtserror.NewErrorInternalError(err)
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}
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// Update account stats.
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//
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// Clamp to 0 to avoid funny business.
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*requestingAccount.Stats.StatusesPinnedCount--
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if *requestingAccount.Stats.StatusesPinnedCount < 0 {
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*requestingAccount.Stats.StatusesPinnedCount = 0
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}
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if err := p.state.DB.UpdateAccountStats(
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ctx,
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requestingAccount.Stats,
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"statuses_pinned_count",
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); err != nil {
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err = gtserror.Newf("db error updating stats: %w", err)
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return nil, gtserror.NewErrorInternalError(err)
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}
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if err := p.c.InvalidateTimelinedStatus(ctx, requestingAccount.ID, targetStatusID); err != nil {
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err = gtserror.Newf("error invalidating status from timelines: %w", err)
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return nil, gtserror.NewErrorInternalError(err)
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}
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return p.c.GetAPIStatus(ctx, requestingAccount, targetStatus)
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}
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