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gitea/models/migrations/v221.go
zeripath e819da0837
WebAuthn CredentialID field needs to be increased in size (#20530)
WebAuthn have updated their specification to set the maximum size of the
CredentialID to 1023 bytes. This is somewhat larger than our current
size and therefore we need to migrate.

The PR changes the struct to add CredentialIDBytes and migrates the CredentialID string 
to the bytes field before another migration drops the old CredentialID field. Another migration
renames this field back.

Fix #20457

Signed-off-by: Andrew Thornton <art27@cantab.net>
2022-07-30 15:25:26 +02:00

75 lines
2.1 KiB
Go

// Copyright 2022 The Gitea Authors. All rights reserved.
// Use of this source code is governed by a MIT-style
// license that can be found in the LICENSE file.
package migrations
import (
"encoding/base32"
"fmt"
"code.gitea.io/gitea/modules/timeutil"
"xorm.io/xorm"
)
func storeWebauthnCredentialIDAsBytes(x *xorm.Engine) error {
// Create webauthnCredential table
type webauthnCredential struct {
ID int64 `xorm:"pk autoincr"`
Name string
LowerName string `xorm:"unique(s)"`
UserID int64 `xorm:"INDEX unique(s)"`
CredentialID string `xorm:"INDEX VARCHAR(410)"`
// Note the lack of INDEX here - these will be created once the column is renamed in v223.go
CredentialIDBytes []byte `xorm:"VARBINARY(1024)"` // CredentialID is at most 1023 bytes as per spec released 20 July 2022
PublicKey []byte
AttestationType string
AAGUID []byte
SignCount uint32 `xorm:"BIGINT"`
CloneWarning bool
CreatedUnix timeutil.TimeStamp `xorm:"INDEX created"`
UpdatedUnix timeutil.TimeStamp `xorm:"INDEX updated"`
}
if err := x.Sync2(&webauthnCredential{}); err != nil {
return err
}
var start int
creds := make([]*webauthnCredential, 0, 50)
for {
err := x.Select("id, credential_id").OrderBy("id").Limit(50, start).Find(&creds)
if err != nil {
return err
}
err = func() error {
sess := x.NewSession()
defer sess.Close()
if err := sess.Begin(); err != nil {
return fmt.Errorf("unable to allow start session. Error: %w", err)
}
for _, cred := range creds {
cred.CredentialIDBytes, err = base32.HexEncoding.DecodeString(cred.CredentialID)
if err != nil {
return fmt.Errorf("unable to parse credential id %s for credential[%d]: %w", cred.CredentialID, cred.ID, err)
}
count, err := sess.ID(cred.ID).Cols("credential_id_bytes").Update(cred)
if count != 1 || err != nil {
return fmt.Errorf("unable to update credential id bytes for credential[%d]: %d,%w", cred.ID, count, err)
}
}
return sess.Commit()
}()
if err != nil {
return err
}
if len(creds) < 50 {
break
}
start += 50
creds = creds[:0]
}
return nil
}