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>

Makefile

@@ -405,6 +405,11 @@ test-sqlite-migration:  migrations.sqlite.test migrations.individual.sqlite.test
 	GITEA_ROOT="$(CURDIR)" GITEA_CONF=integrations/sqlite.ini ./migrations.sqlite.test
 	GITEA_ROOT="$(CURDIR)" GITEA_CONF=integrations/sqlite.ini ./migrations.individual.sqlite.test
 
+.PHONY: test-sqlite-migration\#%
+test-sqlite-migration\#%:  migrations.sqlite.test migrations.individual.sqlite.test generate-ini-sqlite
+	GITEA_ROOT="$(CURDIR)" GITEA_CONF=integrations/sqlite.ini ./migrations.individual.sqlite.test -test.run $(subst .,/,$*)
+
+
 generate-ini-mysql:
 	sed -e 's|{{TEST_MYSQL_HOST}}|${TEST_MYSQL_HOST}|g' \
 		-e 's|{{TEST_MYSQL_DBNAME}}|${TEST_MYSQL_DBNAME}|g' \

models/migrations/fixtures/Test_increaseCredentialIDTo410/expected_webauthn_credential.yml

@@ -0,0 +1,9 @@
+-
+  id: 1
+  credential_id: "TVHE44TOH7DF7V48SEAIT3EMMJ7TGBOQ289E5AQB34S98LFCUFJ7U2NAVI8RJG6K2F4TC8AQ8KBNO7AGEOQOL9NE43GR63HTEHJSLOG="
+-
+  id: 2
+  credential_id: "TVHE44TOH7DF7V48SEAIT3EMMJ7TGBOQ289E5AQB34S98LFCUFJ7U2NAVI8RJG6K2F4TC8AQ8KBNO7AGEOQOL9NE43GR63HTEHJSLOG="
+-
+  id: 4
+  credential_id: "THIS SHOULD NOT CHAGNGE"

models/migrations/fixtures/Test_increaseCredentialIDTo410/u2f_registration.yml

@@ -0,0 +1,21 @@
+-
+  id: 1
+  name: "u2fkey-correctly-migrated"
+  user_id: 1
+  raw: 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
+  counter: 0
+- id: 2
+  name: "u2fkey-incorrectly-migrated"
+  user_id: 1
+  raw: 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
+  counter: 0
+- id: 3
+  name: "u2fkey-deleted"
+  user_id: 1
+  raw: 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
+  counter: 0
+- id: 4
+  name: "u2fkey-wrong-user-id"
+  user_id: 2
+  raw: 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
+  counter: 0

models/migrations/fixtures/Test_increaseCredentialIDTo410/webauthn_credential.yml

@@ -0,0 +1,30 @@
+-
+  id: 1
+  lower_name: "u2fkey-correctly-migrated"
+  name: "u2fkey-correctly-migrated"
+  user_id: 1
+  credential_id: "TVHE44TOH7DF7V48SEAIT3EMMJ7TGBOQ289E5AQB34S98LFCUFJ7U2NAVI8RJG6K2F4TC8AQ8KBNO7AGEOQOL9NE43GR63HTEHJSLOG="
+  public_key: 0x040d0967a2cad045011631187576492a0beb5b377954b4f694c5afc8bdf25270f87f09a9ab6ce9c282f447ba71b2f2bae2105b32b847e0704f310f48644e3eddf2
+  attestation_type: 'fido-u2f'
+  sign_count: 1
+  clone_warning: false
+-
+  id: 2
+  lower_name: "u2fkey-incorrectly-migrated"
+  name: "u2fkey-incorrectly-migrated"
+  user_id: 1
+  credential_id: "TVHE44TOH7DF7V48SEAIT3EMMJ7TGBOQ289E5AQB34S98LFCUFJ7U2NAVI8RJG6K2F4TC8A"
+  public_key: 0x040d0967a2cad045011631187576492a0beb5b377954b4f694c5afc8bdf25270f87f09a9ab6ce9c282f447ba71b2f2bae2105b32b847e0704f310f48644e3eddf2
+  attestation_type: 'fido-u2f'
+  sign_count: 1
+  clone_warning: false
+-
+  id: 4
+  lower_name: "u2fkey-wrong-user-id"
+  name: "u2fkey-wrong-user-id"
+  user_id: 1
+  credential_id: "THIS SHOULD NOT CHAGNGE"
+  public_key: 0x040d0967a2cad045011631187576492a0beb5b377954b4f694c5afc8bdf25270f87f09a9ab6ce9c282f447ba71b2f2bae2105b32b847e0704f310f48644e3eddf2
+  attestation_type: 'fido-u2f'
+  sign_count: 1
+  clone_warning: false

models/migrations/migrations.go

@@ -370,6 +370,8 @@ var migrations = []Migration{
 	NewMigration("Add webauthn table and migrate u2f data to webauthn", addWebAuthnCred),
 	// v208 -> v209
 	NewMigration("Use base32.HexEncoding instead of base64 encoding for cred ID as it is case insensitive", useBase32HexForCredIDInWebAuthnCredential),
+	// v209 -> v210
+	NewMigration("Increase WebAuthentication CredentialID size to 410", increaseCredentialIDTo410),
 }
 
 // GetCurrentDBVersion returns the current db version

models/migrations/v207.go

@@ -22,7 +22,7 @@ func addWebAuthnCred(x *xorm.Engine) error {
 		Name            string
 		LowerName       string `xorm:"unique(s)"`
 		UserID          int64  `xorm:"INDEX unique(s)"`
-		CredentialID    string `xorm:"INDEX"`
+		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

models/migrations/v208.go

@@ -15,7 +15,7 @@ func useBase32HexForCredIDInWebAuthnCredential(x *xorm.Engine) error {
 	// Create webauthnCredential table
 	type webauthnCredential struct {
 		ID           int64  `xorm:"pk autoincr"`
-		CredentialID string `xorm:"INDEX"`
+		CredentialID string `xorm:"INDEX VARCHAR(410)"`
 	}
 	if err := x.Sync2(&webauthnCredential{}); err != nil {
 		return err

models/migrations/v209.go

@@ -0,0 +1,136 @@
+// 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"
+	"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
+	}
+
+	// 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]
+	}
+
+	return nil
+}

models/migrations/v209_test.go

@@ -0,0 +1,74 @@
+// 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 (
+	"testing"
+
+	"code.gitea.io/gitea/modules/timeutil"
+	"github.com/stretchr/testify/assert"
+	"xorm.io/xorm/schemas"
+)
+
+func Test_increaseCredentialIDTo410(t *testing.T) {
+	// 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
+		SignCount       uint32 `xorm:"BIGINT"`
+		CloneWarning    bool
+	}
+
+	// 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"`
+	}
+
+	type ExpectedWebauthnCredential struct {
+		ID           int64  `xorm:"pk autoincr"`
+		CredentialID string `xorm:"INDEX VARCHAR(410)"` // CredentalID in U2F is at most 255bytes / 5 * 8 = 408 - add a few extra characters for safety
+	}
+
+	// Prepare and load the testing database
+	x, deferable := prepareTestEnv(t, 0, new(WebauthnCredential), new(U2fRegistration), new(ExpectedWebauthnCredential))
+	if x == nil || t.Failed() {
+		defer deferable()
+		return
+	}
+	defer deferable()
+
+	if x.Dialect().URI().DBType == schemas.SQLITE {
+		return
+	}
+
+	// Run the migration
+	if err := increaseCredentialIDTo410(x); err != nil {
+		assert.NoError(t, err)
+		return
+	}
+
+	expected := []ExpectedWebauthnCredential{}
+	if err := x.Table("expected_webauthn_credential").Asc("id").Find(&expected); !assert.NoError(t, err) {
+		return
+	}
+
+	got := []ExpectedWebauthnCredential{}
+	if err := x.Table("webauthn_credential").Select("id, credential_id").Asc("id").Find(&got); !assert.NoError(t, err) {
+		return
+	}
+
+	assert.EqualValues(t, expected, got)
+}