gotosocial/internal/processing/admin/domainblock.go
tobi e70bf8a6c8
[chore/bugfix] Domain block tidying up, Implement first pass of 207 Multi-Status (#1886)
* [chore/refactor] update domain block processing

* expose domain block import errors a lil better

* move/remove unused query keys
2023-07-07 11:34:12 +02:00

480 lines
16 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 (
"bytes"
"context"
"encoding/json"
"errors"
"fmt"
"io"
"mime/multipart"
"net/http"
"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/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"
)
// DomainBlockCreate creates an instance-level block against the given domain,
// and then processes side effects of that block (deleting accounts, media, etc).
//
// If a domain block already exists for the domain, side effects will be retried.
func (p *Processor) DomainBlockCreate(
ctx context.Context,
account *gtsmodel.Account,
domain string,
obfuscate bool,
publicComment string,
privateComment string,
subscriptionID string,
) (*apimodel.DomainBlock, 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: account.ID,
PrivateComment: text.SanitizePlaintext(privateComment),
PublicComment: text.SanitizePlaintext(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: %s", domain, err)
return nil, gtserror.NewErrorInternalError(err)
}
}
// Process the side effects of the domain block
// asynchronously since it might take a while.
p.state.Workers.ClientAPI.Enqueue(func(ctx context.Context) {
p.domainBlockSideEffects(ctx, account, domainBlock)
})
return p.apiDomainBlock(ctx, domainBlock)
}
// DomainBlocksImport handles the import of multiple domain blocks,
// by calling the DomainBlockCreate function for each domain in the
// provided file. Will return a slice of processed domain blocks.
//
// In the case of total failure, a gtserror.WithCode will be returned
// so that the caller can respond appropriately. In the case of
// partial or total success, a MultiStatus model will be returned,
// which contains information about success/failure count, so that
// the caller can retry any failures as they wish.
func (p *Processor) DomainBlocksImport(
ctx context.Context,
account *gtsmodel.Account,
domainsF *multipart.FileHeader,
) (*apimodel.MultiStatus, gtserror.WithCode) {
// Open the provided file.
file, err := domainsF.Open()
if err != nil {
err = gtserror.Newf("error opening attachment: %w", err)
return nil, gtserror.NewErrorBadRequest(err, err.Error())
}
defer file.Close()
// Copy the file contents into a buffer.
buf := new(bytes.Buffer)
size, err := io.Copy(buf, file)
if err != nil {
err = gtserror.Newf("error reading attachment: %w", err)
return nil, gtserror.NewErrorBadRequest(err, err.Error())
}
// Ensure we actually read something.
if size == 0 {
err = gtserror.New("error reading attachment: size 0 bytes")
return nil, gtserror.NewErrorBadRequest(err, err.Error())
}
// Parse bytes as slice of domain blocks.
domainBlocks := make([]*apimodel.DomainBlock, 0)
if err := json.Unmarshal(buf.Bytes(), &domainBlocks); err != nil {
err = gtserror.Newf("error parsing attachment as domain blocks: %w", err)
return nil, gtserror.NewErrorBadRequest(err, err.Error())
}
count := len(domainBlocks)
if count == 0 {
err = gtserror.New("error importing domain blocks: 0 entries provided")
return nil, gtserror.NewErrorBadRequest(err, err.Error())
}
// Try to process each domain block, differentiating
// between successes and errors so that the caller can
// try failed imports again if desired.
multiStatusEntries := make([]apimodel.MultiStatusEntry, 0, count)
for _, domainBlock := range domainBlocks {
var (
domain = domainBlock.Domain.Domain
obfuscate = domainBlock.Obfuscate
publicComment = domainBlock.PublicComment
privateComment = domainBlock.PrivateComment
subscriptionID = "" // No sub ID for imports.
errWithCode gtserror.WithCode
)
domainBlock, errWithCode = p.DomainBlockCreate(
ctx,
account,
domain,
obfuscate,
publicComment,
privateComment,
subscriptionID,
)
var entry *apimodel.MultiStatusEntry
if errWithCode != nil {
entry = &apimodel.MultiStatusEntry{
// Use the failed domain entry as the resource value.
Resource: domain,
Message: errWithCode.Safe(),
Status: errWithCode.Code(),
}
} else {
entry = &apimodel.MultiStatusEntry{
// Use successfully created API model domain block as the resource value.
Resource: domainBlock,
Message: http.StatusText(http.StatusOK),
Status: http.StatusOK,
}
}
multiStatusEntries = append(multiStatusEntries, *entry)
}
return apimodel.NewMultiStatus(multiStatusEntries), nil
}
// DomainBlocksGet returns all existing domain blocks. If export is
// true, the format will be suitable for writing out to an export.
func (p *Processor) DomainBlocksGet(ctx context.Context, account *gtsmodel.Account, export bool) ([]*apimodel.DomainBlock, gtserror.WithCode) {
domainBlocks, err := p.state.DB.GetDomainBlocks(ctx)
if err != nil && !errors.Is(err, db.ErrNoEntries) {
err = gtserror.Newf("db error getting domain blocks: %w", err)
return nil, gtserror.NewErrorInternalError(err)
}
apiDomainBlocks := make([]*apimodel.DomainBlock, 0, len(domainBlocks))
for _, domainBlock := range domainBlocks {
apiDomainBlock, errWithCode := p.apiDomainBlock(ctx, domainBlock)
if errWithCode != nil {
return nil, errWithCode
}
apiDomainBlocks = append(apiDomainBlocks, apiDomainBlock)
}
return apiDomainBlocks, nil
}
// DomainBlockGet returns one domain block with the given id. If export
// is true, the format will be suitable for writing out to an export.
func (p *Processor) DomainBlockGet(ctx context.Context, id string, export bool) (*apimodel.DomainBlock, gtserror.WithCode) {
domainBlock, err := p.state.DB.GetDomainBlockByID(ctx, id)
if err != nil {
if errors.Is(err, db.ErrNoEntries) {
err = fmt.Errorf("no domain block exists with id %s", id)
return nil, gtserror.NewErrorNotFound(err, err.Error())
}
// Something went wrong in the DB.
err = gtserror.Newf("db error getting domain block %s: %w", id, err)
return nil, gtserror.NewErrorInternalError(err)
}
return p.apiDomainBlock(ctx, domainBlock)
}
// DomainBlockDelete removes one domain block with the given ID,
// and processes side effects of removing the block asynchronously.
func (p *Processor) DomainBlockDelete(ctx context.Context, account *gtsmodel.Account, id string) (*apimodel.DomainBlock, gtserror.WithCode) {
domainBlock, err := p.state.DB.GetDomainBlockByID(ctx, id)
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", id)
return nil, gtserror.NewErrorNotFound(err, err.Error())
}
// Prepare the domain block to return, *before* the deletion goes through.
apiDomainBlock, errWithCode := p.apiDomainBlock(ctx, domainBlock)
if errWithCode != nil {
return nil, errWithCode
}
// Copy value of the domain block.
domainBlockC := new(gtsmodel.DomainBlock)
*domainBlockC = *domainBlock
// 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)
}
// Process the side effects of the domain unblock
// asynchronously since it might take a while.
p.state.Workers.ClientAPI.Enqueue(func(ctx context.Context) {
p.domainUnblockSideEffects(ctx, domainBlockC) // Use the copy.
})
return apiDomainBlock, nil
}
// stubbifyInstance renders the given instance as a stub,
// removing most information from it and marking it as
// suspended.
//
// For caller's convenience, this function returns the db
// names of all columns that are updated by it.
func stubbifyInstance(instance *gtsmodel.Instance, domainBlockID string) []string {
instance.Title = ""
instance.SuspendedAt = time.Now()
instance.DomainBlockID = domainBlockID
instance.ShortDescription = ""
instance.Description = ""
instance.Terms = ""
instance.ContactEmail = ""
instance.ContactAccountUsername = ""
instance.ContactAccountID = ""
instance.Version = ""
return []string{
"title",
"suspended_at",
"domain_block_id",
"short_description",
"description",
"terms",
"contact_email",
"contact_account_username",
"contact_account_id",
"version",
}
}
// apiDomainBlock is a cheeky shortcut function for returning the API
// version of the given domainBlock, or an appropriate error if
// something goes wrong.
func (p *Processor) apiDomainBlock(ctx context.Context, domainBlock *gtsmodel.DomainBlock) (*apimodel.DomainBlock, gtserror.WithCode) {
apiDomainBlock, err := p.tc.DomainBlockToAPIDomainBlock(ctx, domainBlock, false)
if err != nil {
err = gtserror.Newf("error converting domain block for %s to api model : %w", domainBlock.Domain, err)
return nil, gtserror.NewErrorInternalError(err)
}
return apiDomainBlock, nil
}
// rangeAccounts iterates through all accounts originating from the
// given domain, and calls the provided range function on each account.
// If an error is returned from the range function, the loop will stop
// and return the error.
func (p *Processor) rangeAccounts(
ctx context.Context,
domain string,
rangeF func(*gtsmodel.Account) error,
) error {
var (
limit = 50 // Limit selection to avoid spiking mem/cpu.
maxID string // Start with empty string to select from top.
)
for {
// Get (next) page of accounts.
accounts, err := p.state.DB.GetInstanceAccounts(ctx, domain, maxID, limit)
if err != nil && !errors.Is(err, db.ErrNoEntries) {
// Real db error.
return gtserror.Newf("db error getting instance accounts: %w", err)
}
if len(accounts) == 0 {
// No accounts left, we're done.
return nil
}
// Set next max ID for paging down.
maxID = accounts[len(accounts)-1].ID
// Call provided range function.
for _, account := range accounts {
if err := rangeF(account); err != nil {
return err
}
}
}
}
// 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, account *gtsmodel.Account, block *gtsmodel.DomainBlock) {
l := log.
WithContext(ctx).
WithFields(kv.Fields{
{"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, err := p.state.DB.GetInstance(ctx, block.Domain)
if err != nil && !errors.Is(err, db.ErrNoEntries) {
l.Errorf("db error getting instance %s: %q", block.Domain, err)
}
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 {
l.Errorf("db error updating instance: %s", err)
} else {
l.Debug("instance entry updated")
}
}
// For each account that belongs to this domain, create
// an account delete message to process via the client API
// worker pool, to remove that account's posts, media, etc.
msgs := []messages.FromClientAPI{}
if err := p.rangeAccounts(ctx, block.Domain, func(account *gtsmodel.Account) error {
msgs = append(msgs, messages.FromClientAPI{
APObjectType: ap.ActorPerson,
APActivityType: ap.ActivityDelete,
GTSModel: block,
OriginAccount: account,
TargetAccount: account,
})
return nil
}); err != nil {
l.Errorf("error while ranging through accounts: %q", err)
}
// Batch process all accreted messages.
p.state.Workers.EnqueueClientAPI(ctx, msgs...)
}
// 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) {
l := log.
WithContext(ctx).
WithFields(kv.Fields{
{"domain", block.Domain},
}...)
l.Debug("processing domain unblock side effects")
// 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) {
l.Errorf("db error getting instance %s: %q", 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 {
l.Errorf("db error updating instance: %s", err)
} else {
l.Debug("instance entry updated")
}
}
// Unsuspend all accounts whose suspension origin was this domain block.
if err := p.rangeAccounts(ctx, block.Domain, func(account *gtsmodel.Account) error {
if account.SuspensionOrigin == "" || account.SuspendedAt.IsZero() {
// Account wasn't suspended, nothing to do.
return nil
}
if account.SuspensionOrigin != block.ID {
// Account was suspended, but not by
// this domain block, leave it alone.
return nil
}
// 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 {
return gtserror.Newf("db error updating account %s: %w", account.Username, err)
}
return nil
}); err != nil {
l.Errorf("error while ranging through accounts: %q", err)
}
}