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WebAuthn CredentialID field needs to be increased in size (#20530)

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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>
This commit is contained in:
zeripath 2022-07-30 14:25:26 +01:00 • committed by GitHub
parent 692707f145
commit e819da0837
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GPG key ID: 4AEE18F83AFDEB23
10 changed files with 363 additions and 16 deletions
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18
models/auth/webauthn.go
View file

@ -6,7 +6,6 @@ package auth
import (
"context"
"encoding/base32"
"fmt"
"strings"
@ -20,14 +19,14 @@ import (
// ErrWebAuthnCredentialNotExist represents a "ErrWebAuthnCRedentialNotExist" kind of error.
type ErrWebAuthnCredentialNotExist struct {
ID int64
CredentialID string
CredentialID []byte
}
func (err ErrWebAuthnCredentialNotExist) Error() string {
if err.CredentialID == "" {
if len(err.CredentialID) == 0 {
return fmt.Sprintf("WebAuthn credential does not exist [id: %d]", err.ID)
}
return fmt.Sprintf("WebAuthn credential does not exist [credential_id: %s]", err.CredentialID)
return fmt.Sprintf("WebAuthn credential does not exist [credential_id: %x]", err.CredentialID)
}
// IsErrWebAuthnCredentialNotExist checks if an error is a ErrWebAuthnCredentialNotExist.
@ -43,7 +42,7 @@ type WebAuthnCredential struct {
Name string
LowerName string `xorm:"unique(s)"`
UserID int64 `xorm:"INDEX unique(s)"`
CredentialID string `xorm:"INDEX VARCHAR(410)"`
CredentialID []byte `xorm:"INDEX VARBINARY(1024)"`
PublicKey []byte
AttestationType string
AAGUID []byte
@ -94,9 +93,8 @@ type WebAuthnCredentialList []*WebAuthnCredential
func (list WebAuthnCredentialList) ToCredentials() []webauthn.Credential {
creds := make([]webauthn.Credential, 0, len(list))
for _, cred := range list {
credID, _ := base32.HexEncoding.DecodeString(cred.CredentialID)
creds = append(creds, webauthn.Credential{
ID: credID,
ID: cred.CredentialID,
PublicKey: cred.PublicKey,
AttestationType: cred.AttestationType,
Authenticator: webauthn.Authenticator{
@ -164,11 +162,11 @@ func HasWebAuthnRegistrationsByUID(uid int64) (bool, error) {
}
// GetWebAuthnCredentialByCredID returns WebAuthn credential by credential ID
func GetWebAuthnCredentialByCredID(userID int64, credID string) (*WebAuthnCredential, error) {
func GetWebAuthnCredentialByCredID(userID int64, credID []byte) (*WebAuthnCredential, error) {
return getWebAuthnCredentialByCredID(db.DefaultContext, userID, credID)
}
func getWebAuthnCredentialByCredID(ctx context.Context, userID int64, credID string) (*WebAuthnCredential, error) {
func getWebAuthnCredentialByCredID(ctx context.Context, userID int64, credID []byte) (*WebAuthnCredential, error) {
cred := new(WebAuthnCredential)
if found, err := db.GetEngine(ctx).Where("user_id = ? AND credential_id = ?", userID, credID).Get(cred); err != nil {
return nil, err
@ -187,7 +185,7 @@ func createCredential(ctx context.Context, userID int64, name string, cred *weba
c := &WebAuthnCredential{
UserID: userID,
Name: name,
CredentialID: base32.HexEncoding.EncodeToString(cred.ID),
CredentialID: cred.ID,
PublicKey: cred.PublicKey,
AttestationType: cred.AttestationType,
AAGUID: cred.Authenticator.AAGUID,

5
models/auth/webauthn_test.go
View file

@ -5,7 +5,6 @@
package auth
import (
"encoding/base32"
"testing"
"code.gitea.io/gitea/models/unittest"
@ -61,9 +60,7 @@ func TestCreateCredential(t *testing.T) {
res, err := CreateCredential(1, "WebAuthn Created Credential", &webauthn.Credential{ID: []byte("Test")})
assert.NoError(t, err)
assert.Equal(t, "WebAuthn Created Credential", res.Name)
bs, err := base32.HexEncoding.DecodeString(res.CredentialID)
assert.NoError(t, err)
assert.Equal(t, []byte("Test"), bs)
assert.Equal(t, []byte("Test"), res.CredentialID)
unittest.AssertExistsIf(t, true, &WebAuthnCredential{Name: "WebAuthn Created Credential", UserID: 1})
}