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// 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 account
import (
"context"
"errors"
"fmt"
"github.com/superseriousbusiness/gotosocial/internal/ap"
apimodel "github.com/superseriousbusiness/gotosocial/internal/api/model"
"github.com/superseriousbusiness/gotosocial/internal/db"
"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/messages"
"github.com/superseriousbusiness/gotosocial/internal/paging"
"github.com/superseriousbusiness/gotosocial/internal/uris"
"github.com/superseriousbusiness/gotosocial/internal/util"
)
// BlockCreate handles the creation of a block from requestingAccount to targetAccountID, either remote or local.
func (p *Processor) BlockCreate(ctx context.Context, requestingAccount *gtsmodel.Account, targetAccountID string) (*apimodel.Relationship, gtserror.WithCode) {
targetAccount, existingBlock, errWithCode := p.getBlockTarget(ctx, requestingAccount, targetAccountID)
if errWithCode != nil {
return nil, errWithCode
}
if existingBlock != nil {
// Block already exists, nothing to do.
return p.RelationshipGet(ctx, requestingAccount, targetAccountID)
}
// Create and store a new block.
blockID := id.NewULID()
blockURI := uris.GenerateURIForBlock(requestingAccount.Username, blockID)
block := >smodel.Block{
ID: blockID,
URI: blockURI,
AccountID: requestingAccount.ID,
Account: requestingAccount,
TargetAccountID: targetAccountID,
TargetAccount: targetAccount,
}
if err := p.state.DB.PutBlock(ctx, block); err != nil {
err = fmt.Errorf("BlockCreate: error creating block in db: %w", err)
return nil, gtserror.NewErrorInternalError(err)
}
// Ensure each account unfollows the other.
// We only care about processing unfollow side
// effects from requesting account -> target
// account, since requesting account is ours,
// and target account might not be.
msgs, err := p.unfollow(ctx, requestingAccount, targetAccount)
if err != nil {
err = fmt.Errorf("BlockCreate: error unfollowing: %w", err)
return nil, gtserror.NewErrorInternalError(err)
}
// Ensure unfollowed in other direction;
// ignore/don't process returned messages.
if _, err := p.unfollow(ctx, targetAccount, requestingAccount); err != nil {
err = fmt.Errorf("BlockCreate: error unfollowing: %w", err)
return nil, gtserror.NewErrorInternalError(err)
}
// Process block side effects (federation etc).
msgs = append(msgs, messages.FromClientAPI{
APObjectType: ap.ActivityBlock,
APActivityType: ap.ActivityCreate,
GTSModel: block,
OriginAccount: requestingAccount,
TargetAccount: targetAccount,
})
// Batch queue accreted client api messages.
p.state.Workers.EnqueueClientAPI(ctx, msgs...)
return p.RelationshipGet(ctx, requestingAccount, targetAccountID)
}
// BlockRemove handles the removal of a block from requestingAccount to targetAccountID, either remote or local.
func (p *Processor) BlockRemove(ctx context.Context, requestingAccount *gtsmodel.Account, targetAccountID string) (*apimodel.Relationship, gtserror.WithCode) {
targetAccount, existingBlock, errWithCode := p.getBlockTarget(ctx, requestingAccount, targetAccountID)
if errWithCode != nil {
return nil, errWithCode
}
if existingBlock == nil {
// Already not blocked, nothing to do.
return p.RelationshipGet(ctx, requestingAccount, targetAccountID)
}
// We got a block, remove it from the db.
if err := p.state.DB.DeleteBlockByID(ctx, existingBlock.ID); err != nil {
err := fmt.Errorf("BlockRemove: error removing block from db: %w", err)
return nil, gtserror.NewErrorInternalError(err)
}
// Populate account fields for convenience.
existingBlock.Account = requestingAccount
existingBlock.TargetAccount = targetAccount
// Process block removal side effects (federation etc).
p.state.Workers.EnqueueClientAPI(ctx, messages.FromClientAPI{
APObjectType: ap.ActivityBlock,
APActivityType: ap.ActivityUndo,
GTSModel: existingBlock,
OriginAccount: requestingAccount,
TargetAccount: targetAccount,
})
return p.RelationshipGet(ctx, requestingAccount, targetAccountID)
}
// BlocksGet ...
func (p *Processor) BlocksGet(
ctx context.Context,
requestingAccount *gtsmodel.Account,
page *paging.Page,
) (*apimodel.PageableResponse, gtserror.WithCode) {
blocks, err := p.state.DB.GetAccountBlocks(ctx,
requestingAccount.ID,
page,
)
if err != nil && !errors.Is(err, db.ErrNoEntries) {
return nil, gtserror.NewErrorInternalError(err)
}
// Check for empty response.
count := len(blocks)
if len(blocks) == 0 {
return util.EmptyPageableResponse(), nil
}
items := make([]interface{}, 0, count)
for _, block := range blocks {
// Convert target account to frontend API model. (target will never be nil)
account, err := p.converter.AccountToAPIAccountBlocked(ctx, block.TargetAccount)
if err != nil {
log.Errorf(ctx, "error converting account to public api account: %v", err)
continue
}
// Append target to return items.
items = append(items, account)
}
// Get the lowest and highest
// ID values, used for paging.
lo := blocks[count-1].ID
hi := blocks[0].ID
return paging.PackageResponse(paging.ResponseParams{
Items: items,
Path: "/api/v1/blocks",
Next: page.Next(lo, hi),
Prev: page.Prev(lo, hi),
}), nil
}
func (p *Processor) getBlockTarget(ctx context.Context, requestingAccount *gtsmodel.Account, targetAccountID string) (*gtsmodel.Account, *gtsmodel.Block, gtserror.WithCode) {
// Account should not block or unblock itself.
if requestingAccount.ID == targetAccountID {
err := fmt.Errorf("getBlockTarget: account %s cannot block or unblock itself", requestingAccount.ID)
return nil, nil, gtserror.NewErrorNotAcceptable(err, err.Error())
}
// Ensure target account retrievable.
targetAccount, err := p.state.DB.GetAccountByID(ctx, targetAccountID)
if err != nil {
if !errors.Is(err, db.ErrNoEntries) {
// Real db error.
err = fmt.Errorf("getBlockTarget: db error looking for target account %s: %w", targetAccountID, err)
return nil, nil, gtserror.NewErrorInternalError(err)
}
// Account not found.
err = fmt.Errorf("getBlockTarget: target account %s not found in the db", targetAccountID)
return nil, nil, gtserror.NewErrorNotFound(err, err.Error())
}
// Check if currently blocked.
block, err := p.state.DB.GetBlock(ctx, requestingAccount.ID, targetAccountID)
if err != nil && !errors.Is(err, db.ErrNoEntries) {
err = fmt.Errorf("getBlockTarget: db error checking existing block: %w", err)
return nil, nil, gtserror.NewErrorInternalError(err)
}
return targetAccount, block, nil
}
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