gotosocial/internal/processing/admin/domainblock.go

352 lines
11 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 admin
import (
"context"
"errors"
"fmt"
"time"
"codeberg.org/gruf/go-kv"
"github.com/superseriousbusiness/gotosocial/internal/ap"
apimodel "github.com/superseriousbusiness/gotosocial/internal/api/model"
"github.com/superseriousbusiness/gotosocial/internal/config"
"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/text"
)
func (p *Processor) createDomainBlock(
ctx context.Context,
adminAcct *gtsmodel.Account,
domain string,
obfuscate bool,
publicComment string,
privateComment string,
subscriptionID string,
) (*apimodel.DomainPermission, string, gtserror.WithCode) {
// Check if a block already exists for this domain.
domainBlock, err := p.state.DB.GetDomainBlock(ctx, domain)
if err != nil && !errors.Is(err, db.ErrNoEntries) {
// Something went wrong in the DB.
err = gtserror.Newf("db error getting domain block %s: %w", domain, err)
return nil, "", gtserror.NewErrorInternalError(err)
}
if domainBlock == nil {
// No block exists yet, create it.
domainBlock = &gtsmodel.DomainBlock{
ID: id.NewULID(),
Domain: domain,
CreatedByAccountID: adminAcct.ID,
PrivateComment: text.SanitizeToPlaintext(privateComment),
PublicComment: text.SanitizeToPlaintext(publicComment),
Obfuscate: &obfuscate,
SubscriptionID: subscriptionID,
}
// Insert the new block into the database.
if err := p.state.DB.CreateDomainBlock(ctx, domainBlock); err != nil {
err = gtserror.Newf("db error putting domain block %s: %w", domain, err)
return nil, "", gtserror.NewErrorInternalError(err)
}
}
actionID := id.NewULID()
// Process domain block side
// effects asynchronously.
if errWithCode := p.actions.Run(
ctx,
&gtsmodel.AdminAction{
ID: actionID,
TargetCategory: gtsmodel.AdminActionCategoryDomain,
TargetID: domain,
Type: gtsmodel.AdminActionSuspend,
AccountID: adminAcct.ID,
Text: domainBlock.PrivateComment,
},
func(ctx context.Context) gtserror.MultiError {
// Log start + finish.
l := log.WithFields(kv.Fields{
{"domain", domain},
{"actionID", actionID},
}...).WithContext(ctx)
skip, err := p.skipBlockSideEffects(ctx, domain)
if err != nil {
return err
}
if skip != "" {
l.Infof("skipping domain block side effects: %s", skip)
return nil
}
l.Info("processing domain block side effects")
defer func() { l.Info("finished processing domain block side effects") }()
return p.domainBlockSideEffects(ctx, domainBlock)
},
); errWithCode != nil {
return nil, actionID, errWithCode
}
apiDomainBlock, errWithCode := p.apiDomainPerm(ctx, domainBlock, false)
if errWithCode != nil {
return nil, actionID, errWithCode
}
return apiDomainBlock, actionID, nil
}
// skipBlockSideEffects checks if side effects of block creation
// should be skipped for the given domain, taking account of
// instance federation mode, and existence of any allows
// which ought to "shield" this domain from being blocked.
//
// If the caller should skip, the returned string will be non-zero
// and will be set to a reason why side effects should be skipped.
//
// - blocklist mode + allow exists: "..." (skip)
// - blocklist mode + no allow: "" (don't skip)
// - allowlist mode + allow exists: "" (don't skip)
// - allowlist mode + no allow: "" (don't skip)
func (p *Processor) skipBlockSideEffects(
ctx context.Context,
domain string,
) (string, gtserror.MultiError) {
var (
skip string // Assume "" (don't skip).
errs gtserror.MultiError
)
// Never skip block side effects in allowlist mode.
fediMode := config.GetInstanceFederationMode()
if fediMode == config.InstanceFederationModeAllowlist {
return skip, errs
}
// We know we're in blocklist mode.
//
// We want to skip domain block side
// effects if an allow is already
// in place which overrides the block.
// Check if an explicit allow exists for this domain.
domainAllow, err := p.state.DB.GetDomainAllow(ctx, domain)
if err != nil && !errors.Is(err, db.ErrNoEntries) {
errs.Appendf("error getting domain allow: %w", err)
return skip, errs
}
if domainAllow != nil {
skip = "running in blocklist mode, and an explicit allow exists for this domain"
return skip, errs
}
return skip, errs
}
// domainBlockSideEffects processes the side effects of a domain block:
//
// 1. Strip most info away from the instance entry for the domain.
// 2. Pass each account from the domain to the processor for deletion.
//
// It should be called asynchronously, since it can take a while when
// there are many accounts present on the given domain.
func (p *Processor) domainBlockSideEffects(
ctx context.Context,
block *gtsmodel.DomainBlock,
) gtserror.MultiError {
var errs gtserror.MultiError
// If we have an instance entry for this domain,
// update it with the new block ID and clear all fields
instance, err := p.state.DB.GetInstance(ctx, block.Domain)
if err != nil && !errors.Is(err, db.ErrNoEntries) {
errs.Appendf("db error getting instance %s: %w", block.Domain, err)
return errs
}
if instance != nil {
// We had an entry for this domain.
columns := stubbifyInstance(instance, block.ID)
if err := p.state.DB.UpdateInstance(ctx, instance, columns...); err != nil {
errs.Appendf("db error updating instance: %w", err)
return errs
}
}
// For each account that belongs to this domain,
// process an account delete message to remove
// that account's posts, media, etc.
if err := p.rangeDomainAccounts(ctx, block.Domain, func(account *gtsmodel.Account) {
cMsg := messages.FromClientAPI{
APObjectType: ap.ActorPerson,
APActivityType: ap.ActivityDelete,
GTSModel: block,
OriginAccount: account,
TargetAccount: account,
}
if err := p.state.Workers.ProcessFromClientAPI(ctx, cMsg); err != nil {
errs.Append(err)
}
}); err != nil {
errs.Appendf("db error ranging through accounts: %w", err)
}
return errs
}
func (p *Processor) deleteDomainBlock(
ctx context.Context,
adminAcct *gtsmodel.Account,
domainBlockID string,
) (*apimodel.DomainPermission, string, gtserror.WithCode) {
domainBlock, err := p.state.DB.GetDomainBlockByID(ctx, domainBlockID)
if err != nil {
if !errors.Is(err, db.ErrNoEntries) {
// Real error.
err = gtserror.Newf("db error getting domain block: %w", err)
return nil, "", gtserror.NewErrorInternalError(err)
}
// There are just no entries for this ID.
err = fmt.Errorf("no domain block entry exists with ID %s", domainBlockID)
return nil, "", gtserror.NewErrorNotFound(err, err.Error())
}
// Prepare the domain block to return, *before* the deletion goes through.
apiDomainBlock, errWithCode := p.apiDomainPerm(ctx, domainBlock, false)
if errWithCode != nil {
return nil, "", errWithCode
}
// Delete the original domain block.
if err := p.state.DB.DeleteDomainBlock(ctx, domainBlock.Domain); err != nil {
err = gtserror.Newf("db error deleting domain block: %w", err)
return nil, "", gtserror.NewErrorInternalError(err)
}
actionID := id.NewULID()
// Process domain unblock side
// effects asynchronously.
if errWithCode := p.actions.Run(
ctx,
&gtsmodel.AdminAction{
ID: actionID,
TargetCategory: gtsmodel.AdminActionCategoryDomain,
TargetID: domainBlock.Domain,
Type: gtsmodel.AdminActionUnsuspend,
AccountID: adminAcct.ID,
},
func(ctx context.Context) gtserror.MultiError {
// Log start + finish.
l := log.WithFields(kv.Fields{
{"domain", domainBlock.Domain},
{"actionID", actionID},
}...).WithContext(ctx)
l.Info("processing domain unblock side effects")
defer func() { l.Info("finished processing domain unblock side effects") }()
return p.domainUnblockSideEffects(ctx, domainBlock)
},
); errWithCode != nil {
return nil, actionID, errWithCode
}
return apiDomainBlock, actionID, nil
}
// domainUnblockSideEffects processes the side effects of undoing a
// domain block:
//
// 1. Mark instance entry as no longer suspended.
// 2. Mark each account from the domain as no longer suspended, if the
// suspension origin corresponds to the ID of the provided domain block.
//
// It should be called asynchronously, since it can take a while when
// there are many accounts present on the given domain.
func (p *Processor) domainUnblockSideEffects(
ctx context.Context,
block *gtsmodel.DomainBlock,
) gtserror.MultiError {
var errs gtserror.MultiError
// Update instance entry for this domain, if we have it.
instance, err := p.state.DB.GetInstance(ctx, block.Domain)
if err != nil && !errors.Is(err, db.ErrNoEntries) {
errs.Appendf("db error getting instance %s: %w", block.Domain, err)
}
if instance != nil {
// We had an entry, update it to signal
// that it's no longer suspended.
instance.SuspendedAt = time.Time{}
instance.DomainBlockID = ""
if err := p.state.DB.UpdateInstance(
ctx,
instance,
"suspended_at",
"domain_block_id",
); err != nil {
errs.Appendf("db error updating instance: %w", err)
return errs
}
}
// Unsuspend all accounts whose suspension origin was this domain block.
if err := p.rangeDomainAccounts(ctx, block.Domain, func(account *gtsmodel.Account) {
if account.SuspensionOrigin == "" || account.SuspendedAt.IsZero() {
// Account wasn't suspended, nothing to do.
return
}
if account.SuspensionOrigin != block.ID {
// Account was suspended, but not by
// this domain block, leave it alone.
return
}
// Account was suspended by this domain
// block, mark it as unsuspended.
account.SuspendedAt = time.Time{}
account.SuspensionOrigin = ""
if err := p.state.DB.UpdateAccount(
ctx,
account,
"suspended_at",
"suspension_origin",
); err != nil {
errs.Appendf("db error updating account %s: %w", account.Username, err)
}
}); err != nil {
errs.Appendf("db error ranging through accounts: %w", err)
}
return errs
}