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// GoToSocial
// Copyright (C) GoToSocial Authors admin@gotosocial.org
// SPDX-License-Identifier: AGPL-3.0-or-later
//
// This program is free software: you can redistribute it and/or modify
// it under the terms of the GNU Affero General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU Affero General Public License for more details.
//
// You should have received a copy of the GNU Affero General Public License
// along with this program. If not, see <http://www.gnu.org/licenses/>.
package user
import (
"context"
"errors"
"fmt"
"time"
"github.com/superseriousbusiness/gotosocial/internal/ap"
apimodel "github.com/superseriousbusiness/gotosocial/internal/api/model"
"github.com/superseriousbusiness/gotosocial/internal/db"
"github.com/superseriousbusiness/gotosocial/internal/gtserror"
"github.com/superseriousbusiness/gotosocial/internal/gtsmodel"
"github.com/superseriousbusiness/gotosocial/internal/messages"
"github.com/superseriousbusiness/gotosocial/internal/validate"
"golang.org/x/crypto/bcrypt"
)
// EmailChange processes an email address change request for the given user.
func (p *Processor) EmailChange(
ctx context.Context,
user *gtsmodel.User,
password string,
newEmail string,
) (*apimodel.User, gtserror.WithCode) {
// Ensure provided password is correct.
if err := bcrypt.CompareHashAndPassword([]byte(user.EncryptedPassword), []byte(password)); err != nil {
err := gtserror.Newf("%w", err)
return nil, gtserror.NewErrorUnauthorized(err, "password was incorrect")
}
// Ensure new email address is valid.
if err := validate.Email(newEmail); err != nil {
return nil, gtserror.NewErrorBadRequest(err, err.Error())
}
// Ensure new email address is different
// from current email address.
if newEmail == user.Email {
const help = "new email address cannot be the same as current email address"
err := gtserror.New(help)
return nil, gtserror.NewErrorBadRequest(err, help)
}
if newEmail == user.UnconfirmedEmail {
const help = "you already have an email change request pending for given email address"
err := gtserror.New(help)
return nil, gtserror.NewErrorBadRequest(err, help)
}
// Ensure this address isn't already used by another account.
emailAvailable, err := p.state.DB.IsEmailAvailable(ctx, newEmail)
if err != nil {
err := gtserror.Newf("db error checking email availability: %w", err)
return nil, gtserror.NewErrorInternalError(err)
}
if !emailAvailable {
const help = "new email address is already in use on this instance"
err := gtserror.New(help)
return nil, gtserror.NewErrorConflict(err, help)
}
// Set new email address on user.
user.UnconfirmedEmail = newEmail
if err := p.state.DB.UpdateUser(
ctx, user,
"unconfirmed_email",
); err != nil {
err := gtserror.Newf("db error updating user: %w", err)
return nil, gtserror.NewErrorInternalError(err)
}
// Ensure user populated (we need account).
if err := p.state.DB.PopulateUser(ctx, user); err != nil {
err := gtserror.Newf("db error populating user: %w", err)
return nil, gtserror.NewErrorInternalError(err)
}
// Add email sending job to the queue.
p.state.Workers.Client.Queue.Push(&messages.FromClientAPI{
// Use ap.ObjectProfile here to
// distinguish this message (user model)
// from ap.ActorPerson (account model).
APObjectType: ap.ObjectProfile,
APActivityType: ap.ActivityUpdate,
GTSModel: user,
Origin: user.Account,
Target: user.Account,
})
return p.converter.UserToAPIUser(ctx, user), nil
}
// EmailGetUserForConfirmToken retrieves the user (with account) from
// the database for the given "confirm your email" token string.
func (p *Processor) EmailGetUserForConfirmToken(ctx context.Context, token string) (*gtsmodel.User, gtserror.WithCode) {
if token == "" {
err := errors.New("no token provided")
return nil, gtserror.NewErrorNotFound(err)
}
user, err := p.state.DB.GetUserByConfirmationToken(ctx, token)
if err != nil {
if !errors.Is(err, db.ErrNoEntries) {
// Real error.
return nil, gtserror.NewErrorInternalError(err)
}
// No user found for this token.
return nil, gtserror.NewErrorNotFound(err)
}
if user.Account == nil {
user.Account, err = p.state.DB.GetAccountByID(ctx, user.AccountID)
if err != nil {
// We need the account for a local user.
return nil, gtserror.NewErrorInternalError(err)
}
}
if !user.Account.SuspendedAt.IsZero() {
err := fmt.Errorf("account %s is suspended", user.AccountID)
return nil, gtserror.NewErrorForbidden(err, err.Error())
}
return user, nil
}
// EmailConfirm processes an email confirmation request,
// usually initiated as a result of clicking on a link
// in a 'confirm your email address' type email.
func (p *Processor) EmailConfirm(ctx context.Context, token string) (*gtsmodel.User, gtserror.WithCode) {
user, errWithCode := p.EmailGetUserForConfirmToken(ctx, token)
if errWithCode != nil {
return nil, errWithCode
}
if user.UnconfirmedEmail == "" ||
user.UnconfirmedEmail == user.Email {
// Confirmed already, just return.
return user, nil
}
// Ensure token not expired.
const oneWeek = 168 * time.Hour
if user.ConfirmationSentAt.Before(time.Now().Add(-oneWeek)) {
err := errors.New("confirmation token expired (older than one week)")
return nil, gtserror.NewErrorForbidden(err, err.Error())
}
// Mark the user's email address as confirmed,
// and remove the unconfirmed address and the token.
user.Email = user.UnconfirmedEmail
user.UnconfirmedEmail = ""
user.ConfirmedAt = time.Now()
user.ConfirmationToken = ""
if err := p.state.DB.UpdateUser(
ctx,
user,
"email",
"unconfirmed_email",
"confirmed_at",
"confirmation_token",
); err != nil {
return nil, gtserror.NewErrorInternalError(err)
}
return user, nil
}
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