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Code Issues Releases Wiki Activity

Attempt to fix the webauthn migration again - part 3 (#18770)

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v208.go is seriously broken as it misses an ID() check. We need to no-op and remigrate all of the u2f keys.

See #18756

Signed-off-by: Andrew Thornton <art27@cantab.net>
This commit is contained in:
zeripath 2022-02-16 21:03:58 +00:00 committed by GitHub
parent f48771ae78
commit 3a29a23cdc
No known key found for this signature in database
GPG key ID: 4AEE18F83AFDEB23
10 changed files with 190 additions and 251 deletions
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2
models/auth/webauthn.go
View file

@ -43,7 +43,7 @@ type WebAuthnCredential struct {
Name string
LowerName string `xorm:"unique(s)"`
UserID int64 `xorm:"INDEX unique(s)"`
CredentialID string `xorm:"INDEX"`
CredentialID string `xorm:"INDEX VARCHAR(410)"`
PublicKey []byte
AttestationType string
AAGUID []byte

5
models/migrations/fixtures/Test_increaseCredentialIDTo410/expected_webauthn_credential.yml → models/migrations/fixtures/Test_remigrateU2FCredentials/expected_webauthn_credential.yml
View file

@ -4,6 +4,9 @@
-
id: 2
credential_id: "TVHE44TOH7DF7V48SEAIT3EMMJ7TGBOQ289E5AQB34S98LFCUFJ7U2NAVI8RJG6K2F4TC8AQ8KBNO7AGEOQOL9NE43GR63HTEHJSLOG="
-
id: 3
credential_id: "TVHE44TOH7DF7V48SEAIT3EMMJ7TGBOQ289E5AQB34S98LFCUFJ7U2NAVI8RJG6K2F4TC8AQ8KBNO7AGEOQOL9NE43GR63HTEHJSLOG="
-
id: 4
credential_id: "THIS SHOULD NOT CHAGNGE"
credential_id: "TVHE44TOH7DF7V48SEAIT3EMMJ7TGBOQ289E5AQB34S98LFCUFJ7U2NAVI8RJG6K2F4TC8AQ8KBNO7AGEOQOL9NE43GR63HTEHJSLOG="

0
models/migrations/fixtures/Test_increaseCredentialIDTo410/u2f_registration.yml → models/migrations/fixtures/Test_remigrateU2FCredentials/u2f_registration.yml
View file

2
models/migrations/fixtures/Test_increaseCredentialIDTo410/webauthn_credential.yml → models/migrations/fixtures/Test_remigrateU2FCredentials/webauthn_credential.yml
View file

@ -23,7 +23,7 @@
lower_name: "u2fkey-wrong-user-id"
name: "u2fkey-wrong-user-id"
user_id: 1
credential_id: "THIS SHOULD NOT CHAGNGE"
credential_id: "THIS SHOULD CHANGE"
public_key: 0x040d0967a2cad045011631187576492a0beb5b377954b4f694c5afc8bdf25270f87f09a9ab6ce9c282f447ba71b2f2bae2105b32b847e0704f310f48644e3eddf2
attestation_type: 'fido-u2f'
sign_count: 1

8
models/migrations/migrations.go
View file

@ -367,11 +367,13 @@ var migrations = []Migration{
// v206 -> v207
NewMigration("Add authorize column to team_unit table", addAuthorizeColForTeamUnit),
// v207 -> v208
NewMigration("Add webauthn table and migrate u2f data to webauthn", addWebAuthnCred),
NewMigration("Add webauthn table and migrate u2f data to webauthn - NO-OPED", addWebAuthnCred),
// v208 -> v209
NewMigration("Use base32.HexEncoding instead of base64 encoding for cred ID as it is case insensitive", useBase32HexForCredIDInWebAuthnCredential),
NewMigration("Use base32.HexEncoding instead of base64 encoding for cred ID as it is case insensitive - NO-OPED", useBase32HexForCredIDInWebAuthnCredential),
// v209 -> v210
NewMigration("Increase WebAuthentication CredentialID size to 410", increaseCredentialIDTo410),
NewMigration("Increase WebAuthentication CredentialID size to 410 - NO-OPED", increaseCredentialIDTo410),
// v210 -> v211
NewMigration("v208 was completely broken - remigrate", remigrateU2FCredentials),
}
// GetCurrentDBVersion returns the current db version

77
models/migrations/v207.go
View file

@ -5,86 +5,11 @@
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]
}
// NO-OP Don't migrate here - let v210 do this.
return nil
}

38
models/migrations/v208.go
View file

@ -5,46 +5,10 @@
package migrations
import (
"encoding/base32"
"encoding/base64"
"xorm.io/xorm"
)
func useBase32HexForCredIDInWebAuthnCredential(x *xorm.Engine) error {
// Create webauthnCredential table
type webauthnCredential struct {
ID int64 `xorm:"pk autoincr"`
CredentialID string `xorm:"INDEX VARCHAR(410)"`
}
if err := x.Sync2(&webauthnCredential{}); err != nil {
return err
}
var start int
regs := make([]*webauthnCredential, 0, 50)
for {
err := x.OrderBy("id").Limit(50, start).Find(&regs)
if err != nil {
return err
}
for _, reg := range regs {
credID, _ := base64.RawStdEncoding.DecodeString(reg.CredentialID)
reg.CredentialID = base32.HexEncoding.EncodeToString(credID)
_, err := x.Update(reg)
if err != nil {
return err
}
}
if len(regs) < 50 {
break
}
start += 50
regs = regs[:0]
}
// noop
return nil
}

133
models/migrations/v209.go
View file

@ -5,140 +5,13 @@
package migrations
import (
"encoding/base32"
"fmt"
"strings"
"code.gitea.io/gitea/modules/timeutil"
"github.com/tstranex/u2f"
"xorm.io/xorm"
"xorm.io/xorm/schemas"
)
func increaseCredentialIDTo410(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
}
switch x.Dialect().URI().DBType {
case schemas.MYSQL:
_, err := x.Exec("ALTER TABLE webauthn_credential MODIFY COLUMN credential_id VARCHAR(410)")
if err != nil {
return err
}
case schemas.ORACLE:
_, err := x.Exec("ALTER TABLE webauthn_credential MODIFY credential_id VARCHAR(410)")
if err != nil {
return err
}
case schemas.MSSQL:
// This column has an index on it. I could write all of the code to attempt to change the index OR
// I could just use recreate table.
sess := x.NewSession()
if err := sess.Begin(); err != nil {
_ = sess.Close()
return err
}
if err := recreateTable(sess, new(webauthnCredential)); err != nil {
_ = sess.Close()
return err
}
if err := sess.Commit(); err != nil {
_ = sess.Close()
return err
}
if err := sess.Close(); err != nil {
return err
}
case schemas.POSTGRES:
_, err := x.Exec("ALTER TABLE webauthn_credential ALTER COLUMN credential_id TYPE VARCHAR(410)")
if err != nil {
return err
}
default:
// SQLite doesn't support ALTER COLUMN, and it already makes String _TEXT_ by default so no migration needed
// nor is there any need to re-migrate
return nil
}
exist, err := x.IsTableExist("u2f_registration")
if err != nil {
return err
}
if !exist {
return nil
}
// 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
}
cred := &webauthnCredential{}
has, err := x.ID(reg.ID).Where("id = ? AND user_id = ?", reg.ID, reg.UserID).Get(cred)
if err != nil {
return fmt.Errorf("unable to get webauthn_credential[%d]. Error: %v", reg.ID, err)
}
if !has {
continue
}
remigratedCredID := base32.HexEncoding.EncodeToString(parsed.KeyHandle)
if cred.CredentialID == remigratedCredID || (!strings.HasPrefix(remigratedCredID, cred.CredentialID) && cred.CredentialID != "") {
continue
}
cred.CredentialID = remigratedCredID
_, err = x.ID(cred.ID).Update(cred)
if err != nil {
return err
}
}
if len(regs) < 50 {
break
}
start += 50
regs = regs[:0]
}
// no-op
// v208 was completely wrong
// So now we have to no-op again.
return nil
}

172
models/migrations/v210.go Normal file
View file

@ -0,0 +1,172 @@
// 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 (
"crypto/elliptic"
"encoding/base32"
"fmt"
"strings"
"code.gitea.io/gitea/modules/timeutil"
"github.com/tstranex/u2f"
"xorm.io/xorm"
"xorm.io/xorm/schemas"
)
// v208 migration was completely broken
func remigrateU2FCredentials(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
}
switch x.Dialect().URI().DBType {
case schemas.MYSQL:
_, err := x.Exec("ALTER TABLE webauthn_credential MODIFY COLUMN credential_id VARCHAR(410)")
if err != nil {
return err
}
case schemas.ORACLE:
_, err := x.Exec("ALTER TABLE webauthn_credential MODIFY credential_id VARCHAR(410)")
if err != nil {
return err
}
case schemas.MSSQL:
// This column has an index on it. I could write all of the code to attempt to change the index OR
// I could just use recreate table.
sess := x.NewSession()
if err := sess.Begin(); err != nil {
_ = sess.Close()
return err
}
if err := recreateTable(sess, new(webauthnCredential)); err != nil {
_ = sess.Close()
return err
}
if err := sess.Commit(); err != nil {
_ = sess.Close()
return err
}
if err := sess.Close(); err != nil {
return err
}
case schemas.POSTGRES:
_, err := x.Exec("ALTER TABLE webauthn_credential ALTER COLUMN credential_id TYPE VARCHAR(410)")
if err != nil {
return err
}
default:
// SQLite doesn't support ALTER COLUMN, and it already makes String _TEXT_ by default so no migration needed
// nor is there any need to re-migrate
}
exist, err := x.IsTableExist("u2f_registration")
if err != nil {
return err
}
if !exist {
return nil
}
// 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
}
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)
}
if x.Dialect().URI().DBType == schemas.MSSQL {
if _, err := sess.Exec("SET IDENTITY_INSERT `webauthn_credential` ON"); err != nil {
return fmt.Errorf("unable to allow identity insert on webauthn_credential. Error: %w", err)
}
}
for _, reg := range regs {
parsed := new(u2f.Registration)
err = parsed.UnmarshalBinary(reg.Raw)
if err != nil {
continue
}
remigrated := &webauthnCredential{
ID: reg.ID,
Name: reg.Name,
LowerName: strings.ToLower(reg.Name),
UserID: reg.UserID,
CredentialID: base32.HexEncoding.EncodeToString(parsed.KeyHandle),
PublicKey: elliptic.Marshal(elliptic.P256(), parsed.PubKey.X, parsed.PubKey.Y),
AttestationType: "fido-u2f",
AAGUID: []byte{},
SignCount: reg.Counter,
UpdatedUnix: reg.UpdatedUnix,
CreatedUnix: reg.CreatedUnix,
}
has, err := sess.ID(reg.ID).Where("id = ?", reg.ID).Get(new(webauthnCredential))
if err != nil {
return fmt.Errorf("unable to get webauthn_credential[%d]. Error: %w", reg.ID, err)
}
if !has {
_, err = sess.Insert(remigrated)
if err != nil {
return fmt.Errorf("unable to (re)insert webauthn_credential[%d]. Error: %w", reg.ID, err)
}
continue
}
_, err = sess.ID(remigrated.ID).AllCols().Update(remigrated)
if err != nil {
return fmt.Errorf("unable to update webauthn_credential[%d]. Error: %w", reg.ID, err)
}
}
return sess.Commit()
}()
if err != nil {
return err
}
if len(regs) < 50 {
break
}
start += 50
regs = regs[:0]
}
return nil
}

4
models/migrations/v209_test.go → models/migrations/v210_test.go
View file

@ -12,7 +12,7 @@ import (
"xorm.io/xorm/schemas"
)
func Test_increaseCredentialIDTo410(t *testing.T) {
func Test_remigrateU2FCredentials(t *testing.T) {
// Create webauthnCredential table
type WebauthnCredential struct {
ID int64 `xorm:"pk autoincr"`
@ -55,7 +55,7 @@ func Test_increaseCredentialIDTo410(t *testing.T) {
}
// Run the migration
if err := increaseCredentialIDTo410(x); err != nil {
if err := remigrateU2FCredentials(x); err != nil {
assert.NoError(t, err)
return
}