forgejo/models/user/email_address.go
Gergely Nagy d4fc0d2c5a
[GITEA] Allow changing the email address before activation
During registration, one may be required to give their email address, to
be verified and activated later. However, if one makes a mistake, a
typo, they may end up with an account that cannot be activated due to
having a wrong email address.

They can still log in, but not change the email address, thus, no way to
activate it without help from an administrator.

To remedy this issue, lets allow changing the email address for logged
in, but not activated users.

This fixes gitea#17785.

Signed-off-by: Gergely Nagy <forgejo@gergo.csillger.hu>
(cherry picked from commit aaaece28e4)
(cherry picked from commit 639dafabec)
(cherry picked from commit d699c12ceb)

[GITEA] Allow changing the email address before activation (squash) cache is always active

This needs to be revisited because the MailResendLimit is not enforced
and turns out to not be tested.

See e7cb8da2a8 * Always enable caches (#28527)

(cherry picked from commit 43ded8ee30)

Rate limit pre-activation email change separately

Changing the email address before any email address is activated should
be subject to a different rate limit than the normal activation email
resending. If there's only one rate limit for both, then if a newly
signed up quickly discovers they gave a wrong email address, they'd have
to wait three minutes to change it.

With the two separate limits, they don't - but they'll have to wait
three minutes before they can change the email address again.

The downside of this setup is that a malicious actor can alternate
between resending and changing the email address (to something like
`user+$idx@domain`, delivered to the same inbox) to effectively halving
the rate limit. I do not think there's a better solution, and this feels
like such a small attack surface that I'd deem it acceptable.

The way the code works after this change is that `ActivatePost` will now
check the `MailChangeLimit_user` key rather than `MailResendLimit_user`,
and if we're within the limit, it will set `MailChangedJustNow_user`. The
`Activate` method - which sends the activation email, whether it is a
normal resend, or one following an email change - will check
`MailChangedJustNow_user`, and if it is set, it will check the rate
limit against `MailChangedLimit_user`, otherwise against
`MailResendLimit_user`, and then will delete the
`MailChangedJustNow_user` key from the cache.

Fixes #2040.

Signed-off-by: Gergely Nagy <forgejo@gergo.csillger.hu>
(cherry picked from commit e35d2af2e5)
(cherry picked from commit 03989418a7)
(cherry picked from commit f50e0dfe5e)
(cherry picked from commit cad9184a36)
(cherry picked from commit e2da5d7fe1)
(cherry picked from commit 3a80534d4d)
2024-02-05 16:09:41 +01:00

577 lines
16 KiB
Go

// Copyright 2016 The Gogs Authors. All rights reserved.
// Copyright 2020 The Gitea Authors. All rights reserved.
// SPDX-License-Identifier: MIT
package user
import (
"context"
"fmt"
"net/mail"
"regexp"
"strings"
"code.gitea.io/gitea/models/db"
"code.gitea.io/gitea/modules/base"
"code.gitea.io/gitea/modules/log"
"code.gitea.io/gitea/modules/setting"
"code.gitea.io/gitea/modules/util"
"code.gitea.io/gitea/modules/validation"
"xorm.io/builder"
)
// ErrEmailNotActivated e-mail address has not been activated error
var ErrEmailNotActivated = util.NewInvalidArgumentErrorf("e-mail address has not been activated")
// ErrEmailCharIsNotSupported e-mail address contains unsupported character
type ErrEmailCharIsNotSupported struct {
Email string
}
// IsErrEmailCharIsNotSupported checks if an error is an ErrEmailCharIsNotSupported
func IsErrEmailCharIsNotSupported(err error) bool {
_, ok := err.(ErrEmailCharIsNotSupported)
return ok
}
func (err ErrEmailCharIsNotSupported) Error() string {
return fmt.Sprintf("e-mail address contains unsupported character [email: %s]", err.Email)
}
func (err ErrEmailCharIsNotSupported) Unwrap() error {
return util.ErrInvalidArgument
}
// ErrEmailInvalid represents an error where the email address does not comply with RFC 5322
// or has a leading '-' character
type ErrEmailInvalid struct {
Email string
}
// IsErrEmailInvalid checks if an error is an ErrEmailInvalid
func IsErrEmailInvalid(err error) bool {
_, ok := err.(ErrEmailInvalid)
return ok
}
func (err ErrEmailInvalid) Error() string {
return fmt.Sprintf("e-mail invalid [email: %s]", err.Email)
}
func (err ErrEmailInvalid) Unwrap() error {
return util.ErrInvalidArgument
}
// ErrEmailAlreadyUsed represents a "EmailAlreadyUsed" kind of error.
type ErrEmailAlreadyUsed struct {
Email string
}
// IsErrEmailAlreadyUsed checks if an error is a ErrEmailAlreadyUsed.
func IsErrEmailAlreadyUsed(err error) bool {
_, ok := err.(ErrEmailAlreadyUsed)
return ok
}
func (err ErrEmailAlreadyUsed) Error() string {
return fmt.Sprintf("e-mail already in use [email: %s]", err.Email)
}
func (err ErrEmailAlreadyUsed) Unwrap() error {
return util.ErrAlreadyExist
}
// ErrEmailAddressNotExist email address not exist
type ErrEmailAddressNotExist struct {
Email string
}
// IsErrEmailAddressNotExist checks if an error is an ErrEmailAddressNotExist
func IsErrEmailAddressNotExist(err error) bool {
_, ok := err.(ErrEmailAddressNotExist)
return ok
}
func (err ErrEmailAddressNotExist) Error() string {
return fmt.Sprintf("Email address does not exist [email: %s]", err.Email)
}
func (err ErrEmailAddressNotExist) Unwrap() error {
return util.ErrNotExist
}
// ErrPrimaryEmailCannotDelete primary email address cannot be deleted
type ErrPrimaryEmailCannotDelete struct {
Email string
}
// IsErrPrimaryEmailCannotDelete checks if an error is an ErrPrimaryEmailCannotDelete
func IsErrPrimaryEmailCannotDelete(err error) bool {
_, ok := err.(ErrPrimaryEmailCannotDelete)
return ok
}
func (err ErrPrimaryEmailCannotDelete) Error() string {
return fmt.Sprintf("Primary email address cannot be deleted [email: %s]", err.Email)
}
func (err ErrPrimaryEmailCannotDelete) Unwrap() error {
return util.ErrInvalidArgument
}
// EmailAddress is the list of all email addresses of a user. It also contains the
// primary email address which is saved in user table.
type EmailAddress struct {
ID int64 `xorm:"pk autoincr"`
UID int64 `xorm:"INDEX NOT NULL"`
Email string `xorm:"UNIQUE NOT NULL"`
LowerEmail string `xorm:"UNIQUE NOT NULL"`
IsActivated bool
IsPrimary bool `xorm:"DEFAULT(false) NOT NULL"`
}
func init() {
db.RegisterModel(new(EmailAddress))
}
// BeforeInsert will be invoked by XORM before inserting a record
func (email *EmailAddress) BeforeInsert() {
if email.LowerEmail == "" {
email.LowerEmail = strings.ToLower(email.Email)
}
}
func InsertEmailAddress(ctx context.Context, email *EmailAddress) (*EmailAddress, error) {
if err := db.Insert(ctx, email); err != nil {
return nil, err
}
return email, nil
}
func UpdateEmailAddress(ctx context.Context, email *EmailAddress) error {
_, err := db.GetEngine(ctx).ID(email.ID).AllCols().Update(email)
return err
}
var emailRegexp = regexp.MustCompile("^[a-zA-Z0-9.!#$%&'*+-/=?^_`{|}~]*@[a-zA-Z0-9](?:[a-zA-Z0-9-]{0,61}[a-zA-Z0-9])?(?:\\.[a-zA-Z0-9](?:[a-zA-Z0-9-]{0,61}[a-zA-Z0-9])?)*$")
// ValidateEmail check if email is a allowed address
func ValidateEmail(email string) error {
if len(email) == 0 {
return ErrEmailInvalid{email}
}
if !emailRegexp.MatchString(email) {
return ErrEmailCharIsNotSupported{email}
}
if email[0] == '-' {
return ErrEmailInvalid{email}
}
if _, err := mail.ParseAddress(email); err != nil {
return ErrEmailInvalid{email}
}
// if there is no allow list, then check email against block list
if len(setting.Service.EmailDomainAllowList) == 0 &&
validation.IsEmailDomainListed(setting.Service.EmailDomainBlockList, email) {
return ErrEmailInvalid{email}
}
// if there is an allow list, then check email against allow list
if len(setting.Service.EmailDomainAllowList) > 0 &&
!validation.IsEmailDomainListed(setting.Service.EmailDomainAllowList, email) {
return ErrEmailInvalid{email}
}
return nil
}
func GetEmailAddressByEmail(ctx context.Context, email string) (*EmailAddress, error) {
ea := &EmailAddress{}
if has, err := db.GetEngine(ctx).Where("lower_email=?", strings.ToLower(email)).Get(ea); err != nil {
return nil, err
} else if !has {
return nil, ErrEmailAddressNotExist{email}
}
return ea, nil
}
func GetEmailAddressOfUser(ctx context.Context, email string, uid int64) (*EmailAddress, error) {
ea := &EmailAddress{}
if has, err := db.GetEngine(ctx).Where("lower_email=? AND uid=?", strings.ToLower(email), uid).Get(ea); err != nil {
return nil, err
} else if !has {
return nil, ErrEmailAddressNotExist{email}
}
return ea, nil
}
func GetPrimaryEmailAddressOfUser(ctx context.Context, uid int64) (*EmailAddress, error) {
ea := &EmailAddress{}
if has, err := db.GetEngine(ctx).Where("uid=? AND is_primary=?", uid, true).Get(ea); err != nil {
return nil, err
} else if !has {
return nil, ErrEmailAddressNotExist{}
}
return ea, nil
}
// GetEmailAddresses returns all email addresses belongs to given user.
func GetEmailAddresses(ctx context.Context, uid int64) ([]*EmailAddress, error) {
emails := make([]*EmailAddress, 0, 5)
if err := db.GetEngine(ctx).
Where("uid=?", uid).
Asc("id").
Find(&emails); err != nil {
return nil, err
}
return emails, nil
}
type ActivatedEmailAddress struct {
ID int64
Email string
}
func GetActivatedEmailAddresses(ctx context.Context, uid int64) ([]*ActivatedEmailAddress, error) {
emails := make([]*ActivatedEmailAddress, 0, 8)
if err := db.GetEngine(ctx).
Table("email_address").
Select("id, email").
Where("uid=?", uid).
And("is_activated=?", true).
Asc("id").
Find(&emails); err != nil {
return nil, err
}
return emails, nil
}
// GetEmailAddressByID gets a user's email address by ID
func GetEmailAddressByID(ctx context.Context, uid, id int64) (*EmailAddress, error) {
// User ID is required for security reasons
email := &EmailAddress{UID: uid}
if has, err := db.GetEngine(ctx).ID(id).Get(email); err != nil {
return nil, err
} else if !has {
return nil, nil
}
return email, nil
}
// IsEmailActive check if email is activated with a different emailID
func IsEmailActive(ctx context.Context, email string, excludeEmailID int64) (bool, error) {
if len(email) == 0 {
return true, nil
}
// Can't filter by boolean field unless it's explicit
cond := builder.NewCond()
cond = cond.And(builder.Eq{"lower_email": strings.ToLower(email)}, builder.Neq{"id": excludeEmailID})
if setting.Service.RegisterEmailConfirm {
// Inactive (unvalidated) addresses don't count as active if email validation is required
cond = cond.And(builder.Eq{"is_activated": true})
}
var em EmailAddress
if has, err := db.GetEngine(ctx).Where(cond).Get(&em); has || err != nil {
if has {
log.Info("isEmailActive(%q, %d) found duplicate in email ID %d", email, excludeEmailID, em.ID)
}
return has, err
}
return false, nil
}
// IsEmailUsed returns true if the email has been used.
func IsEmailUsed(ctx context.Context, email string) (bool, error) {
if len(email) == 0 {
return true, nil
}
return db.GetEngine(ctx).Where("lower_email=?", strings.ToLower(email)).Get(&EmailAddress{})
}
// DeleteInactiveEmailAddresses deletes inactive email addresses
func DeleteInactiveEmailAddresses(ctx context.Context) error {
_, err := db.GetEngine(ctx).
Where("is_activated = ?", false).
Delete(new(EmailAddress))
return err
}
// ActivateEmail activates the email address to given user.
func ActivateEmail(ctx context.Context, email *EmailAddress) error {
ctx, committer, err := db.TxContext(ctx)
if err != nil {
return err
}
defer committer.Close()
if err := updateActivation(ctx, email, true); err != nil {
return err
}
return committer.Commit()
}
func updateActivation(ctx context.Context, email *EmailAddress, activate bool) error {
user, err := GetUserByID(ctx, email.UID)
if err != nil {
return err
}
if user.Rands, err = GetUserSalt(); err != nil {
return err
}
email.IsActivated = activate
if _, err := db.GetEngine(ctx).ID(email.ID).Cols("is_activated").Update(email); err != nil {
return err
}
return UpdateUserCols(ctx, user, "rands")
}
func makeEmailPrimary(ctx context.Context, user *User, email *EmailAddress) error {
ctx, committer, err := db.TxContext(ctx)
if err != nil {
return err
}
defer committer.Close()
sess := db.GetEngine(ctx)
// 1. Update user table
user.Email = email.Email
if _, err = sess.ID(user.ID).Cols("email").Update(user); err != nil {
return err
}
// 2. Update old primary email
if _, err = sess.Where("uid=? AND is_primary=?", email.UID, true).Cols("is_primary").Update(&EmailAddress{
IsPrimary: false,
}); err != nil {
return err
}
// 3. update new primary email
email.IsPrimary = true
if _, err = sess.ID(email.ID).Cols("is_primary").Update(email); err != nil {
return err
}
return committer.Commit()
}
// ReplaceInactivePrimaryEmail replaces the primary email of a given user, even if the primary is not yet activated.
func ReplaceInactivePrimaryEmail(ctx context.Context, oldEmail string, email *EmailAddress) error {
user := &User{}
has, err := db.GetEngine(ctx).ID(email.UID).Get(user)
if err != nil {
return err
} else if !has {
return ErrUserNotExist{
UID: email.UID,
Name: "",
KeyID: 0,
}
}
err = AddEmailAddress(ctx, email)
if err != nil {
return err
}
err = makeEmailPrimary(ctx, user, email)
if err != nil {
return err
}
return DeleteEmailAddress(ctx, &EmailAddress{UID: email.UID, Email: oldEmail})
}
// MakeEmailPrimary sets primary email address of given user.
func MakeEmailPrimary(ctx context.Context, email *EmailAddress) error {
has, err := db.GetEngine(ctx).Get(email)
if err != nil {
return err
} else if !has {
return ErrEmailAddressNotExist{Email: email.Email}
}
if !email.IsActivated {
return ErrEmailNotActivated
}
user := &User{}
has, err = db.GetEngine(ctx).ID(email.UID).Get(user)
if err != nil {
return err
} else if !has {
return ErrUserNotExist{UID: email.UID}
}
return makeEmailPrimary(ctx, user, email)
}
// VerifyActiveEmailCode verifies active email code when active account
func VerifyActiveEmailCode(ctx context.Context, code, email string) *EmailAddress {
minutes := setting.Service.ActiveCodeLives
if user := GetVerifyUser(ctx, code); user != nil {
// time limit code
prefix := code[:base.TimeLimitCodeLength]
data := fmt.Sprintf("%d%s%s%s%s", user.ID, email, user.LowerName, user.Passwd, user.Rands)
if base.VerifyTimeLimitCode(data, minutes, prefix) {
emailAddress := &EmailAddress{UID: user.ID, Email: email}
if has, _ := db.GetEngine(ctx).Get(emailAddress); has {
return emailAddress
}
}
}
return nil
}
// SearchEmailOrderBy is used to sort the results from SearchEmails()
type SearchEmailOrderBy string
func (s SearchEmailOrderBy) String() string {
return string(s)
}
// Strings for sorting result
const (
SearchEmailOrderByEmail SearchEmailOrderBy = "email_address.lower_email ASC, email_address.is_primary DESC, email_address.id ASC"
SearchEmailOrderByEmailReverse SearchEmailOrderBy = "email_address.lower_email DESC, email_address.is_primary ASC, email_address.id DESC"
SearchEmailOrderByName SearchEmailOrderBy = "`user`.lower_name ASC, email_address.is_primary DESC, email_address.id ASC"
SearchEmailOrderByNameReverse SearchEmailOrderBy = "`user`.lower_name DESC, email_address.is_primary ASC, email_address.id DESC"
)
// SearchEmailOptions are options to search e-mail addresses for the admin panel
type SearchEmailOptions struct {
db.ListOptions
Keyword string
SortType SearchEmailOrderBy
IsPrimary util.OptionalBool
IsActivated util.OptionalBool
}
// SearchEmailResult is an e-mail address found in the user or email_address table
type SearchEmailResult struct {
UID int64
Email string
IsActivated bool
IsPrimary bool
// From User
Name string
FullName string
}
// SearchEmails takes options i.e. keyword and part of email name to search,
// it returns results in given range and number of total results.
func SearchEmails(ctx context.Context, opts *SearchEmailOptions) ([]*SearchEmailResult, int64, error) {
var cond builder.Cond = builder.Eq{"`user`.`type`": UserTypeIndividual}
if len(opts.Keyword) > 0 {
likeStr := "%" + strings.ToLower(opts.Keyword) + "%"
cond = cond.And(builder.Or(
builder.Like{"lower(`user`.full_name)", likeStr},
builder.Like{"`user`.lower_name", likeStr},
builder.Like{"email_address.lower_email", likeStr},
))
}
switch {
case opts.IsPrimary.IsTrue():
cond = cond.And(builder.Eq{"email_address.is_primary": true})
case opts.IsPrimary.IsFalse():
cond = cond.And(builder.Eq{"email_address.is_primary": false})
}
switch {
case opts.IsActivated.IsTrue():
cond = cond.And(builder.Eq{"email_address.is_activated": true})
case opts.IsActivated.IsFalse():
cond = cond.And(builder.Eq{"email_address.is_activated": false})
}
count, err := db.GetEngine(ctx).Join("INNER", "`user`", "`user`.ID = email_address.uid").
Where(cond).Count(new(EmailAddress))
if err != nil {
return nil, 0, fmt.Errorf("Count: %w", err)
}
orderby := opts.SortType.String()
if orderby == "" {
orderby = SearchEmailOrderByEmail.String()
}
opts.SetDefaultValues()
emails := make([]*SearchEmailResult, 0, opts.PageSize)
err = db.GetEngine(ctx).Table("email_address").
Select("email_address.*, `user`.name, `user`.full_name").
Join("INNER", "`user`", "`user`.ID = email_address.uid").
Where(cond).
OrderBy(orderby).
Limit(opts.PageSize, (opts.Page-1)*opts.PageSize).
Find(&emails)
return emails, count, err
}
// ActivateUserEmail will change the activated state of an email address,
// either primary or secondary (all in the email_address table)
func ActivateUserEmail(ctx context.Context, userID int64, email string, activate bool) (err error) {
ctx, committer, err := db.TxContext(ctx)
if err != nil {
return err
}
defer committer.Close()
// Activate/deactivate a user's secondary email address
// First check if there's another user active with the same address
addr, exist, err := db.Get[EmailAddress](ctx, builder.Eq{"uid": userID, "lower_email": strings.ToLower(email)})
if err != nil {
return err
} else if !exist {
return fmt.Errorf("no such email: %d (%s)", userID, email)
}
if addr.IsActivated == activate {
// Already in the desired state; no action
return nil
}
if activate {
if used, err := IsEmailActive(ctx, email, addr.ID); err != nil {
return fmt.Errorf("unable to check isEmailActive() for %s: %w", email, err)
} else if used {
return ErrEmailAlreadyUsed{Email: email}
}
}
if err = updateActivation(ctx, addr, activate); err != nil {
return fmt.Errorf("unable to updateActivation() for %d:%s: %w", addr.ID, addr.Email, err)
}
// Activate/deactivate a user's primary email address and account
if addr.IsPrimary {
user, exist, err := db.Get[User](ctx, builder.Eq{"id": userID, "email": email})
if err != nil {
return err
} else if !exist {
return fmt.Errorf("no user with ID: %d and Email: %s", userID, email)
}
// The user's activation state should be synchronized with the primary email
if user.IsActive != activate {
user.IsActive = activate
if user.Rands, err = GetUserSalt(); err != nil {
return fmt.Errorf("unable to generate salt: %w", err)
}
if err = UpdateUserCols(ctx, user, "is_active", "rands"); err != nil {
return fmt.Errorf("unable to updateUserCols() for user ID: %d: %w", userID, err)
}
}
}
return committer.Commit()
}