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gitea/models/migrations/v207.go
zeripath 32599bf060
Increase the size of the webauthn_credential credential_id field (#18739)
Unfortunately credentialIDs in u2f are 255 bytes long which with base32 encoding
becomes 408 bytes. The default size of a xorm string field is only a VARCHAR(255)

This problem is not apparent on SQLite because strings get mapped to TEXT there.

Fix #18727

Signed-off-by: Andrew Thornton <art27@cantab.net>
2022-02-13 21:19:12 +00:00

91 lines
2.3 KiB
Go

// Copyright 2021 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 (
"crypto/elliptic"
"encoding/base64"
"strings"
"code.gitea.io/gitea/modules/timeutil"
"github.com/tstranex/u2f"
"xorm.io/xorm"
)
func addWebAuthnCred(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)"` // CredentalID in U2F is at most 255bytes / 5 * 8 = 408 - add a few extra characters for safety
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
}
// Now migrate the old u2f registrations to the new format
type u2fRegistration struct {
ID int64 `xorm:"pk autoincr"`
Name string
UserID int64 `xorm:"INDEX"`
Raw []byte
Counter uint32 `xorm:"BIGINT"`
CreatedUnix timeutil.TimeStamp `xorm:"INDEX created"`
UpdatedUnix timeutil.TimeStamp `xorm:"INDEX updated"`
}
var start int
regs := make([]*u2fRegistration, 0, 50)
for {
err := x.OrderBy("id").Limit(50, start).Find(&regs)
if err != nil {
return err
}
for _, reg := range regs {
parsed := new(u2f.Registration)
err = parsed.UnmarshalBinary(reg.Raw)
if err != nil {
continue
}
c := &webauthnCredential{
ID: reg.ID,
Name: reg.Name,
LowerName: strings.ToLower(reg.Name),
UserID: reg.UserID,
CredentialID: base64.RawStdEncoding.EncodeToString(parsed.KeyHandle),
PublicKey: elliptic.Marshal(elliptic.P256(), parsed.PubKey.X, parsed.PubKey.Y),
AttestationType: "fido-u2f",
AAGUID: []byte{},
SignCount: reg.Counter,
}
_, err := x.Insert(c)
if err != nil {
return err
}
}
if len(regs) < 50 {
break
}
start += 50
regs = regs[:0]
}
return nil
}