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forgejo/services/auth/source/smtp/source_authenticate.go
zeripath 5d2e11eedb
Refactor: Move login out of models (#16199)
`models` does far too much. In particular it handles all `UserSignin`.

It shouldn't be responsible for calling LDAP, SMTP or PAM for signing in.

Therefore we should move this code out of `models`.

This code has to depend on `models` - therefore it belongs in `services`.

There is a package in `services` called `auth` and clearly this functionality belongs in there.

Plan:

- [x] Change `auth.Auth` to `auth.Method` - as they represent methods of authentication.
- [x] Move `models.UserSignIn` into `auth`
- [x] Move `models.ExternalUserLogin`
- [x] Move most of the `LoginVia*` methods to `auth` or subpackages
- [x] Move Resynchronize functionality to `auth`
  - Involved some restructuring of `models/ssh_key.go` to reduce the size of this massive file and simplify its files.
- [x] Move the rest of the LDAP functionality in to the ldap subpackage
- [x] Re-factor the login sources to express an interfaces `auth.Source`?
  - I've done this through some smaller interfaces Authenticator and Synchronizable - which would allow us to extend things in future
- [x] Now LDAP is out of models - need to think about modules/auth/ldap and I think all of that functionality might just be moveable
- [x] Similarly a lot Oauth2 functionality need not be in models too and should be moved to services/auth/source/oauth2
  - [x] modules/auth/oauth2/oauth2.go uses xorm... This is naughty - probably need to move this into models.
  - [x] models/oauth2.go - mostly should be in modules/auth/oauth2 or services/auth/source/oauth2 
- [x] More simplifications of login_source.go may need to be done
- Allow wiring in of notify registration -  *this can now easily be done - but I think we should do it in another PR*  - see #16178 
- More refactors...?
  - OpenID should probably become an auth Method but I think that can be left for another PR
  - Methods should also probably be cleaned up  - again another PR I think.
  - SSPI still needs more refactors.* Rename auth.Auth auth.Method
* Restructure ssh_key.go

- move functions from models/user.go that relate to ssh_key to ssh_key
- split ssh_key.go to try create clearer function domains for allow for
future refactors here.

Signed-off-by: Andrew Thornton <art27@cantab.net>
2021-07-24 11:16:34 +01:00

72 lines
1.9 KiB
Go

// 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 smtp
import (
"errors"
"net/smtp"
"net/textproto"
"strings"
"code.gitea.io/gitea/models"
"code.gitea.io/gitea/modules/util"
)
// Authenticate queries if the provided login/password is authenticates against the SMTP server
// Users will be autoregistered as required
func (source *Source) Authenticate(user *models.User, login, password string) (*models.User, error) {
// Verify allowed domains.
if len(source.AllowedDomains) > 0 {
idx := strings.Index(login, "@")
if idx == -1 {
return nil, models.ErrUserNotExist{Name: login}
} else if !util.IsStringInSlice(login[idx+1:], strings.Split(source.AllowedDomains, ","), true) {
return nil, models.ErrUserNotExist{Name: login}
}
}
var auth smtp.Auth
if source.Auth == PlainAuthentication {
auth = smtp.PlainAuth("", login, password, source.Host)
} else if source.Auth == LoginAuthentication {
auth = &loginAuthenticator{login, password}
} else {
return nil, errors.New("Unsupported SMTP auth type")
}
if err := Authenticate(auth, source); err != nil {
// Check standard error format first,
// then fallback to worse case.
tperr, ok := err.(*textproto.Error)
if (ok && tperr.Code == 535) ||
strings.Contains(err.Error(), "Username and Password not accepted") {
return nil, models.ErrUserNotExist{Name: login}
}
return nil, err
}
if user != nil {
return user, nil
}
username := login
idx := strings.Index(login, "@")
if idx > -1 {
username = login[:idx]
}
user = &models.User{
LowerName: strings.ToLower(username),
Name: strings.ToLower(username),
Email: login,
Passwd: password,
LoginType: models.LoginSMTP,
LoginSource: source.loginSource.ID,
LoginName: login,
IsActive: true,
}
return user, models.CreateUser(user)
}