gotosocial/internal/processing/admin/createdomainblock.go

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/*
GoToSocial
Copyright (C) 2021 GoToSocial Authors admin@gotosocial.org
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"
"fmt"
"time"
"github.com/sirupsen/logrus"
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"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"
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"github.com/superseriousbusiness/gotosocial/internal/messages"
"github.com/superseriousbusiness/gotosocial/internal/text"
)
func (p *processor) DomainBlockCreate(ctx context.Context, account *gtsmodel.Account, domain string, obfuscate bool, publicComment string, privateComment string, subscriptionID string) (*apimodel.DomainBlock, gtserror.WithCode) {
// first check if we already have a block -- if err == nil we already had a block so we can skip a whole lot of work
domainBlock := &gtsmodel.DomainBlock{}
err := p.db.GetWhere(ctx, []db.Where{{Key: "domain", Value: domain, CaseInsensitive: true}}, domainBlock)
if err != nil {
if err != db.ErrNoEntries {
// something went wrong in the DB
return nil, gtserror.NewErrorInternalError(fmt.Errorf("DomainBlockCreate: db error checking for existence of domain block %s: %s", domain, err))
}
// there's no block for this domain yet so create one
// note: we take a new ulid from timestamp here in case we need to sort blocks
blockID, err := id.NewULID()
if err != nil {
return nil, gtserror.NewErrorInternalError(fmt.Errorf("DomainBlockCreate: error creating id for new domain block %s: %s", domain, err))
}
domainBlock = &gtsmodel.DomainBlock{
ID: blockID,
Domain: domain,
CreatedByAccountID: account.ID,
PrivateComment: text.RemoveHTML(privateComment),
PublicComment: text.RemoveHTML(publicComment),
Obfuscate: obfuscate,
SubscriptionID: subscriptionID,
}
// put the new block in the database
if err := p.db.Put(ctx, domainBlock); err != nil {
if err != db.ErrNoEntries {
// there's a real error creating the block
return nil, gtserror.NewErrorInternalError(fmt.Errorf("DomainBlockCreate: db error putting new domain block %s: %s", domain, err))
}
}
// process the side effects of the domain block asynchronously since it might take a while
go p.initiateDomainBlockSideEffects(ctx, account, domainBlock) // TODO: add this to a queuing system so it can retry/resume
}
apiDomainBlock, err := p.tc.DomainBlockToAPIDomainBlock(ctx, domainBlock, false)
if err != nil {
return nil, gtserror.NewErrorInternalError(fmt.Errorf("DomainBlockCreate: error converting domain block to frontend/api representation %s: %s", domain, err))
}
return apiDomainBlock, nil
}
// initiateDomainBlockSideEffects should be called asynchronously, to process the side effects of a domain block:
//
// 1. Strip most info away from the instance entry for the domain.
// 2. Delete the instance account for that instance if it exists.
// 3. Select all accounts from this instance and pass them through the delete functionality of the processor.
func (p *processor) initiateDomainBlockSideEffects(ctx context.Context, account *gtsmodel.Account, block *gtsmodel.DomainBlock) {
l := p.log.WithFields(logrus.Fields{
"func": "domainBlockProcessSideEffects",
"domain": block.Domain,
})
l.Debug("processing domain block side effects")
// if we have an instance entry for this domain, update it with the new block ID and clear all fields
instance := &gtsmodel.Instance{}
if err := p.db.GetWhere(ctx, []db.Where{{Key: "domain", Value: block.Domain, CaseInsensitive: true}}, instance); err == nil {
instance.Title = ""
instance.UpdatedAt = time.Now()
instance.SuspendedAt = time.Now()
instance.DomainBlockID = block.ID
instance.ShortDescription = ""
instance.Description = ""
instance.Terms = ""
instance.ContactEmail = ""
instance.ContactAccountUsername = ""
instance.ContactAccountID = ""
instance.Version = ""
if err := p.db.UpdateByPrimaryKey(ctx, instance); err != nil {
l.Errorf("domainBlockProcessSideEffects: db error updating instance: %s", err)
}
l.Debug("domainBlockProcessSideEffects: instance entry updated")
}
// if we have an instance account for this instance, delete it
if err := p.db.DeleteWhere(ctx, []db.Where{{Key: "username", Value: block.Domain, CaseInsensitive: true}}, &gtsmodel.Account{}); err != nil {
l.Errorf("domainBlockProcessSideEffects: db error removing instance account: %s", err)
}
// delete accounts through the normal account deletion system (which should also delete media + posts + remove posts from timelines)
limit := 20 // just select 20 accounts at a time so we don't nuke our DB/mem with one huge query
var maxID string // this is initially an empty string so we'll start at the top of accounts list (sorted by ID)
selectAccountsLoop:
for {
accounts, err := p.db.GetInstanceAccounts(ctx, block.Domain, maxID, limit)
if err != nil {
if err == db.ErrNoEntries {
// no accounts left for this instance so we're done
l.Infof("domainBlockProcessSideEffects: done iterating through accounts for domain %s", block.Domain)
break selectAccountsLoop
}
// an actual error has occurred
l.Errorf("domainBlockProcessSideEffects: db error selecting accounts for domain %s: %s", block.Domain, err)
break selectAccountsLoop
}
for i, a := range accounts {
l.Debugf("putting delete for account %s in the clientAPI channel", a.Username)
// pass the account delete through the client api channel for processing
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p.fromClientAPI <- messages.FromClientAPI{
APObjectType: ap.ActorPerson,
APActivityType: ap.ActivityDelete,
GTSModel: block,
OriginAccount: account,
TargetAccount: a,
}
// if this is the last account in the slice, set the maxID appropriately for the next query
if i == len(accounts)-1 {
maxID = a.ID
}
}
}
}