From dd136858f1ea40ad3c94191d647487fa4f31926c Mon Sep 17 00:00:00 2001
From: Daniel Baumann <daniel@debian.org>
Date: Fri, 18 Oct 2024 20:33:49 +0200
Subject: Adding upstream version 9.0.0.

Signed-off-by: Daniel Baumann <daniel@debian.org>
---
 models/migrations/v1_16/v210.go | 177 ++++++++++++++++++++++++++++++++++++++++
 1 file changed, 177 insertions(+)
 create mode 100644 models/migrations/v1_16/v210.go

(limited to 'models/migrations/v1_16/v210.go')

diff --git a/models/migrations/v1_16/v210.go b/models/migrations/v1_16/v210.go
new file mode 100644
index 0000000..db45b11
--- /dev/null
+++ b/models/migrations/v1_16/v210.go
@@ -0,0 +1,177 @@
+// Copyright 2022 The Gitea Authors. All rights reserved.
+// SPDX-License-Identifier: MIT
+
+package v1_16 //nolint
+
+import (
+	"crypto/ecdh"
+	"encoding/base32"
+	"errors"
+	"fmt"
+	"strings"
+
+	"code.gitea.io/gitea/modules/timeutil"
+
+	"xorm.io/xorm"
+	"xorm.io/xorm/schemas"
+)
+
+func parseU2FRegistration(raw []byte) (pubKey *ecdh.PublicKey, keyHandle []byte, err error) {
+	if len(raw) < 69 {
+		return nil, nil, errors.New("data is too short")
+	}
+	if raw[0] != 0x05 {
+		return nil, nil, errors.New("invalid reserved byte")
+	}
+	raw = raw[1:]
+
+	pubKey, err = ecdh.P256().NewPublicKey(raw[:65])
+	if err != nil {
+		return nil, nil, err
+	}
+	raw = raw[65:]
+
+	khLen := int(raw[0])
+	if len(raw) < khLen {
+		return nil, nil, errors.New("invalid key handle")
+	}
+	raw = raw[1:]
+	keyHandle = raw[:khLen]
+
+	return pubKey, keyHandle, nil
+}
+
+// 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.Sync(&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.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)
+			}
+			for _, reg := range regs {
+				pubKey, keyHandle, err := parseU2FRegistration(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(keyHandle),
+					PublicKey:       pubKey.Bytes(),
+					AttestationType: "fido-u2f",
+					AAGUID:          []byte{},
+					SignCount:       reg.Counter,
+					UpdatedUnix:     reg.UpdatedUnix,
+					CreatedUnix:     reg.CreatedUnix,
+				}
+
+				has, err := sess.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 {
+					has, err := sess.Where("`lower_name`=?", remigrated.LowerName).And("`user_id`=?", remigrated.UserID).Exist(new(webauthnCredential))
+					if err != nil {
+						return fmt.Errorf("unable to check webauthn_credential[lower_name: %s, user_id: %d]. Error: %w", remigrated.LowerName, remigrated.UserID, 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]
+	}
+
+	if x.Dialect().URI().DBType == schemas.POSTGRES {
+		if _, err := x.Exec("SELECT setval('webauthn_credential_id_seq', COALESCE((SELECT MAX(id)+1 FROM `webauthn_credential`), 1), false)"); err != nil {
+			return err
+		}
+	}
+
+	return nil
+}
-- 
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