1
0
Fork 0
mirror of https://codeberg.org/forgejo/forgejo.git synced 2024-12-23 12:59:11 -05:00
Commit graph

159 commits

Author SHA1 Message Date
Earl Warren
79ffb2de47 Merge pull request '[gitea] week 2024-18 cherry pick (gitea-github/main -> forgejo)' (#3513) from earl-warren/wcp/2024-18 into forgejo
Reviewed-on: https://codeberg.org/forgejo/forgejo/pulls/3513
Reviewed-by: jean-daricade <jean-daricade@noreply.codeberg.org>
2024-04-30 06:42:26 +00:00
oliverpool
e1d93950ad feat: implement PKCE when acting as oauth2 client (for user login)
Closes #2766
2024-04-29 11:20:26 +02:00
silverwind
12b199c5e5
Enable more revive linter rules (#30608)
Noteable additions:

- `redefines-builtin-id` forbid variable names that shadow go builtins
- `empty-lines` remove unnecessary empty lines that `gofumpt` does not
remove for some reason
- `superfluous-else` eliminate more superfluous `else` branches

Rules are also sorted alphabetically and I cleaned up various parts of
`.golangci.yml`.

(cherry picked from commit 74f0c84fa4245a20ce6fb87dac1faf2aeeded2a2)

Conflicts:
	.golangci.yml
	apply the linter recommendations to Forgejo code as well
2024-04-28 15:39:00 +02:00
Baptiste Daroussin
08f5a25d3b ldap: default domain name (#3414)
When the ldap synchronizer is look for an email address and fails at
finding one, it falls back at creating one using "localhost.local"
domain.

This new field makes this domain name configurable.

Reviewed-on: https://codeberg.org/forgejo/forgejo/pulls/3414
Reviewed-by: Earl Warren <earl-warren@noreply.codeberg.org>
Co-authored-by: Baptiste Daroussin <bapt@FreeBSD.org>
Co-committed-by: Baptiste Daroussin <bapt@FreeBSD.org>
2024-04-26 22:38:58 +00:00
Earl Warren
7cabc5670d
Implement remote user login source and promotion to regular user
A remote user (UserTypeRemoteUser) is a placeholder that can be
promoted to a regular user (UserTypeIndividual). It represents users
that exist somewhere else. Although the UserTypeRemoteUser already
exists in Forgejo, it is neither used or documented.

A new login type / source (Remote) is introduced and set to be the login type
of remote users.

Type        UserTypeRemoteUser
LogingType  Remote

The association between a remote user and its counterpart in another
environment (for instance another forge) is via the OAuth2 login
source:

LoginName   set to the unique identifier relative to the login source
LoginSource set to the identifier of the remote source

For instance when migrating from GitLab.com, a user can be created as
if it was authenticated using GitLab.com as an OAuth2 authentication
source.

When a user authenticates to Forejo from the same authentication
source and the identifier match, the remote user is promoted to a
regular user. For instance if 43 is the ID of the GitLab.com OAuth2
login source, 88 is the ID of the Remote loging source, and 48323
is the identifier of the foo user:

Type        UserTypeRemoteUser
LogingType  Remote
LoginName   48323
LoginSource 88
Email       (empty)
Name        foo

Will be promoted to the following when the user foo authenticates to
the Forgejo instance using GitLab.com as an OAuth2 provider. All users
with a LoginType of Remote and a LoginName of 48323 are examined. If
the LoginSource has a provider name that matches the provider name of
GitLab.com (usually just "gitlab"), it is a match and can be promoted.

The email is obtained via the OAuth2 provider and the user set to:

Type        UserTypeIndividual
LogingType  OAuth2
LoginName   48323
LoginSource 43
Email       foo@example.com
Name        foo

Note: the Remote login source is an indirection to the actual login
source, i.e. the provider string my be set to a login source that does
not exist yet.
2024-04-25 13:03:49 +02:00
Jonathan Tran
7ff74a47c8
fix: Fix to delete cookie when AppSubURL is non-empty (#30375)
Cookies may exist on "/subpath" and "/subpath/" for some legacy reasons (eg: changed CookiePath behavior in code). The legacy cookie should be removed correctly.

---------

Co-authored-by: wxiaoguang <wxiaoguang@gmail.com>
Co-authored-by: Kyle D <kdumontnu@gmail.com>
(cherry picked from commit b18c04ebde94e23d97da4958173faea843d5344f)
2024-04-15 20:01:36 +02:00
silverwind
c82bef515e
Migrate margin and padding helpers to tailwind (#30043)
This will conclude the refactor of 1:1 class replacements to tailwind,
except `gt-hidden`. Commands ran:

```bash
perl -p -i -e 's#gt-(p|m)([lrtbxy])?-0#tw-$1$2-0#g'   {web_src/js,templates,routers,services}/**/*
perl -p -i -e 's#gt-(p|m)([lrtbxy])?-1#tw-$1$2-0.5#g' {web_src/js,templates,routers,services}/**/*
perl -p -i -e 's#gt-(p|m)([lrtbxy])?-2#tw-$1$2-1#g'   {web_src/js,templates,routers,services}/**/*
perl -p -i -e 's#gt-(p|m)([lrtbxy])?-3#tw-$1$2-2#g'   {web_src/js,templates,routers,services}/**/*
perl -p -i -e 's#gt-(p|m)([lrtbxy])?-4#tw-$1$2-4#g'   {web_src/js,templates,routers,services}/**/*
perl -p -i -e 's#gt-(p|m)([lrtbxy])?-5#tw-$1$2-8#g'   {web_src/js,templates,routers,services}/**/*
```

(cherry picked from commit 68ec9b48592fe88765bcc3a73093d43c98b315de)

Conflicts:
	routers/web/repo/view.go
	templates/base/head_navbar.tmpl
	templates/repo/code/recently_pushed_new_branches.tmpl
	templates/repo/diff/box.tmpl
	templates/repo/diff/compare.tmpl
	templates/repo/diff/conversation.tmpl
	templates/repo/header.tmpl
	templates/repo/issue/filter_list.tmpl
	templates/repo/issue/view_content/conversation.tmpl
	templates/repo/issue/view_content/sidebar.tmpl
	templates/repo/settings/options.tmpl
	templates/repo/view_file.tmpl
	templates/shared/user/blocked_users.tmpl
	templates/status/500.tmpl
	web_src/js/components/DashboardRepoList.vue
	resolved by prefering Forgejo version and applying the
	commands to all files
2024-03-30 07:17:29 +01:00
Lunny Xiao
cb656d1a43
Fix the bug that user may logout if he switch pages too fast (#29962)
This PR fixed a bug when the user switching pages too fast, he will
logout automatically.

The reason is that when the error is context cancelled, the previous
code think user hasn't login then the session will be deleted. Now it
will return the errors but not think it's not login.

---------

Co-authored-by: wxiaoguang <wxiaoguang@gmail.com>
(cherry picked from commit 82db9a2ba77d2a6c470b62be3c82b73c0a544fcc)
2024-03-26 19:04:26 +01:00
silverwind
0802784744
Replace more gt- with tw- (#29678)
This will conclude the trivial class replacements.

(cherry picked from commit 82e102f8b09faf1ac2786ccad36d4a20fcb392b8)
2024-03-11 23:36:59 +07:00
6543
e2371743d5
remove util.OptionalBool and related functions (#29513)
and migrate affected code

_last refactoring bits to replace **util.OptionalBool** with
**optional.Option[bool]**_

(cherry picked from commit a3f05d0d98408bb47333b19f505b21afcefa9e7c)

Conflicts:
	services/repository/branch.go
	trivial context conflict
2024-03-06 12:10:46 +08:00
Lunny Xiao
894d9b2836
Move context from modules to services (#29440)
Since `modules/context` has to depend on `models` and many other
packages, it should be moved from `modules/context` to
`services/context` according to design principles. There is no logic
code change on this PR, only move packages.

- Move `code.gitea.io/gitea/modules/context` to
`code.gitea.io/gitea/services/context`
- Move `code.gitea.io/gitea/modules/contexttest` to
`code.gitea.io/gitea/services/contexttest` because of depending on
context
- Move `code.gitea.io/gitea/modules/upload` to
`code.gitea.io/gitea/services/context/upload` because of depending on
context

(cherry picked from commit 29f149bd9f517225a3c9f1ca3fb0a7b5325af696)

Conflicts:
	routers/api/packages/alpine/alpine.go
	routers/api/v1/repo/issue_reaction.go
	routers/install/install.go
	routers/web/admin/config.go
	routers/web/passkey.go
	routers/web/repo/search.go
	routers/web/repo/setting/default_branch.go
	routers/web/user/home.go
	routers/web/user/profile.go
	tests/integration/editor_test.go
	tests/integration/integration_test.go
	tests/integration/mirror_push_test.go
	trivial context conflicts
	also modified all other occurrences in Forgejo specific files
2024-03-06 12:10:43 +08:00
Zettat123
826bf12bb4
Fix tarball/zipball download bug (#29342)
Fix #29249

~~Use the `/repos/{owner}/{repo}/archive/{archive}` API to download.~~

Apply #26430 to archive download URLs.

(cherry picked from commit b762a1f1b1f7941a7db2207552d7b441d868cbe9)
2024-02-26 22:30:26 +01:00
6543
8ff858b94b
Start to migrate from util.OptionalBool to optional.Option[bool] (#29329)
just create transition helper and migrate two structs

(cherry picked from commit 7fbdb60fc1152acc9a040dc04b1b0f5a3475b081)
2024-02-26 22:30:26 +01:00
Johan Van de Wauw
5fffab8d9d
Fix c/p error in inline documentation (#29148)
Fix small copy/paste error in inline documentation

---------

Co-authored-by: wxiaoguang <wxiaoguang@gmail.com>
(cherry picked from commit 740c6a226c4df26432641018fbfd9186977d573f)
2024-02-19 22:58:33 +01:00
wxiaoguang
62d3e5255f
Port "Use general token signing secret"
Port of https://github.com/go-gitea/gitea/pull/29205

Use a clearly defined "signing secret" for token signing.

(cherry picked from commit 8be198cdef0a486f417663b1fd6878458d7e5d92)
2024-02-19 20:49:37 +01:00
Loïc Dachary
e57504f278
[BRANDING] X-Forgejo-OTP can be used instead of X-Gitea-OTP
(cherry picked from commit 7b0549cd70)
(cherry picked from commit 13e10a65d9)
(cherry picked from commit 65bdd73cf2)
(cherry picked from commit 64eba8bb92)
(cherry picked from commit 4c49b1a759)
(cherry picked from commit 93b4d06406)
(cherry picked from commit e2bc5f36d9)
(cherry picked from commit 2bee76f9df)
(cherry picked from commit 3d8a1b4a9f)
(cherry picked from commit 99dd092cd0)
(cherry picked from commit 0fdbd02204)
(cherry picked from commit 70b277a183)
(cherry picked from commit 3eece7fbb4)
(cherry picked from commit 4838fc9e11)
(cherry picked from commit b76ed541cf)
(cherry picked from commit dcdfb5b65c)
(cherry picked from commit 377dc48cdc)
(cherry picked from commit acc862f411)
(cherry picked from commit ac75ef101f)
(cherry picked from commit 08f2d9f7c5)
(cherry picked from commit e4096f0b64)
(cherry picked from commit bf5876f062)
(cherry picked from commit 7dc60637e5)
(cherry picked from commit ef3101774b)
(cherry picked from commit ecb9e8867c)
(cherry picked from commit 64f0ae72fe)
(cherry picked from commit 8dd6ec7862)
(cherry picked from commit b36723e52b)

Conflicts:
	modules/context/api.go
	https://codeberg.org/forgejo/forgejo/pulls/1466
(cherry picked from commit 5c378e0cb8)
(cherry picked from commit 1d87602819)
(cherry picked from commit 0f72002d66)
(cherry picked from commit da2556eb13)
(cherry picked from commit c01688cd90)
(cherry picked from commit af4bba8329)
(cherry picked from commit 33ca322c2e)

Conflicts:
	modules/context/api.go
	https://codeberg.org/forgejo/forgejo/pulls/1739
(cherry picked from commit c18e374d44)
(cherry picked from commit 27c4797c9f)
(cherry picked from commit 46588e0fea)
(cherry picked from commit b8a02ef220)
(cherry picked from commit 05e2f49b78)
(cherry picked from commit e4df86d312)
(cherry picked from commit f36e06da43)
(cherry picked from commit 64d336c287)
(cherry picked from commit 2af1cbb017)
(cherry picked from commit 920741a9d6)
(cherry picked from commit 6cbb37c8c4)
(cherry picked from commit 539cceca39)
2024-02-05 16:05:01 +01:00
Gusted
c6a53c3172
[SECURITY] Rework long-term authentication
- This is a 'front-port' of the already existing patch on v1.21 and
v1.20, but applied on top of what Gitea has done to rework the LTA
mechanism. Forgejo will stick with the reworked mechanism by the Forgejo
Security team for the time being. The removal of legacy code (AES-GCM) has been
left out.
- The current architecture is inherently insecure, because you can
construct the 'secret' cookie value with values that are available in
the database. Thus provides zero protection when a database is
dumped/leaked.
- This patch implements a new architecture that's inspired from: [Paragonie Initiative](https://paragonie.com/blog/2015/04/secure-authentication-php-with-long-term-persistence#secure-remember-me-cookies).
- Integration testing is added to ensure the new mechanism works.
- Removes a setting, because it's not used anymore.

(cherry picked from commit e3d6622a63)
(cherry picked from commit fef1a6dac5)
(cherry picked from commit b0c5165145)
(cherry picked from commit 7ad51b9f8d)
(cherry picked from commit 64f053f383)
(cherry picked from commit f5e78e4c20)

Conflicts:
	services/auth/auth_token_test.go
	https://codeberg.org/forgejo/forgejo/pulls/2069
(cherry picked from commit f69fc23d4b)
(cherry picked from commit d955ab3ab0)
(cherry picked from commit 9220088f90)
(cherry picked from commit c73ac63696)
(cherry picked from commit 747a176048)

Conflicts:
	models/user/user.go
	routers/web/user/setting/account.go
	https://codeberg.org/forgejo/forgejo/pulls/2295
2024-02-05 15:06:15 +01:00
KN4CK3R
f8b471ace1
Unify user update methods (#28733)
Fixes #28660
Fixes an admin api bug related to `user.LoginSource`
Fixed `/user/emails` response not identical to GitHub api

This PR unifies the user update methods. The goal is to keep the logic
only at one place (having audit logs in mind). For example, do the
password checks only in one method not everywhere a password is updated.

After that PR is merged, the user creation should be next.
2024-02-04 13:29:09 +00:00
KN4CK3R
fc1bae00a4
Fix SSPI user creation (#28948)
Fixes #28945

Setting the avatar is wrong and creating a random password is equal to
leave it empty.
2024-01-27 09:27:34 +00:00
wxiaoguang
e743570f65
Refactor timeutil package (#28623)
1. make names more readable
2. remove unused FormatLong/FormatShort
3. use `FormatDate` instead of `Format "2006-01-02"`
2023-12-28 10:09:57 +00:00
Jack Hay
4e879fed90
Deprecate query string auth tokens (#28390)
## Changes
- Add deprecation warning to `Token` and `AccessToken` authentication
methods in swagger.
- Add deprecation warning header to API response. Example: 
  ```
  HTTP/1.1 200 OK
  ...
  Warning: token and access_token API authentication is deprecated
  ...
  ```
- Add setting `DISABLE_QUERY_AUTH_TOKEN` to reject query string auth
tokens entirely. Default is `false`

## Next steps
- `DISABLE_QUERY_AUTH_TOKEN` should be true in a subsequent release and
the methods should be removed in swagger
- `DISABLE_QUERY_AUTH_TOKEN` should be removed and the implementation of
the auth methods in question should be removed

## Open questions
- Should there be further changes to the swagger documentation?
Deprecation is not yet supported for security definitions (coming in
[OpenAPI Spec version
3.2.0](https://github.com/OAI/OpenAPI-Specification/issues/2506))
- Should the API router logger sanitize urls that use `token` or
`access_token`? (This is obviously an insufficient solution on its own)

---------

Co-authored-by: delvh <dev.lh@web.de>
2023-12-12 03:48:53 +00:00
Lunny Xiao
df1e7d0067
Use db.Find instead of writing methods for every object (#28084)
For those simple objects, it's unnecessary to write the find and count
methods again and again.
2023-11-24 03:49:41 +00:00
KN4CK3R
4f4fea734c
Unify two factor check (#27915)
Fixes #27819

We have support for two factor logins with the normal web login and with
basic auth. For basic auth the two factor check was implemented at three
different places and you need to know that this check is necessary. This
PR moves the check into the basic auth itself.
2023-11-06 08:22:39 +00:00
Lunny Xiao
1bf5527eac
Refactor Find Sources and fix bug when view a user who belongs to an unactive auth source (#27798)
The steps to reproduce it.

First, create a new oauth2 source.
Then, a user login with this oauth2 source.
Disable the oauth2 source.
Visit users -> settings -> security, 500 will be displayed.
This is because this page only load active Oauth2 sources but not all
Oauth2 sources.
2023-11-03 01:41:00 +00:00
Lunny Xiao
cddf245c12
Replace more db.DefaultContext (#27628)
Target #27065
2023-10-15 17:46:06 +02:00
JakobDev
76a85a4ce9
Final round of db.DefaultContext refactor (#27587)
Last part of #27065
2023-10-14 08:37:24 +00:00
KN4CK3R
c6c829fe3f
Enhanced auth token / remember me (#27606)
Closes #27455

> The mechanism responsible for long-term authentication (the 'remember
me' cookie) uses a weak construction technique. It will hash the user's
hashed password and the rands value; it will then call the secure cookie
code, which will encrypt the user's name with the computed hash. If one
were able to dump the database, they could extract those two values to
rebuild that cookie and impersonate a user. That vulnerability exists
from the date the dump was obtained until a user changed their password.
> 
> To fix this security issue, the cookie could be created and verified
using a different technique such as the one explained at
https://paragonie.com/blog/2015/04/secure-authentication-php-with-long-term-persistence#secure-remember-me-cookies.

The PR removes the now obsolete setting `COOKIE_USERNAME`.
2023-10-14 00:56:41 +00:00
JakobDev
ebe803e514
Penultimate round of db.DefaultContext refactor (#27414)
Part of #27065

---------

Co-authored-by: Lunny Xiao <xiaolunwen@gmail.com>
2023-10-11 04:24:07 +00:00
Lunny Xiao
5c9fbcca00
Fix attachment download bug (#27486) 2023-10-10 15:33:56 +00:00
CaiCandong
7ad31567cd
Fix ldap admin privileges update bug (#27051)
When the user does not set a username lookup condition, LDAP will get an
empty string `""` for the user, hence the following code
```
if isExist, err := user_model.IsUserExist(db.DefaultContext, 0, sr.Username)
```
The user presence determination will always be nonexistent, so updates
to user information will never be performed.


Fix #27049
2023-10-01 11:32:12 +00:00
Lunny Xiao
6e87a44034
Allow get release download files and lfs files with oauth2 token format (#26430)
Fix #26165
Fix #25257
2023-10-01 10:41:52 +00:00
JakobDev
7047df36d4
Another round of db.DefaultContext refactor (#27103)
Part of #27065

---------

Co-authored-by: KN4CK3R <admin@oldschoolhack.me>
2023-09-25 13:17:37 +00:00
silverwind
1b1c55f73f
Increase auth provider icon size on login page (#27122)
Before, 20px:
<img width="474" alt="Screenshot 2023-09-19 at 00 10 05"
src="https://github.com/go-gitea/gitea/assets/115237/4bed4edb-219d-4844-9d3c-0d747033b09f">

After, 28px:
<img width="576" alt="Screenshot 2023-09-19 at 00 20 40"
src="https://github.com/go-gitea/gitea/assets/115237/f482ac09-38ae-4c84-80d9-0bd39b7f9772">


Dropdown in account settings is unchanged at 20px:
<img width="157" alt="Screenshot 2023-09-19 at 00 09 11"
src="https://github.com/go-gitea/gitea/assets/115237/9c998cdf-eeed-4118-9262-664faaa56092">

---------

Co-authored-by: Giteabot <teabot@gitea.io>
2023-09-19 21:47:13 +00:00
wxiaoguang
8531ca0837
Make SSPI auth mockable (#27036)
Before, the SSPI auth is only complied for Windows, it's difficult to
test and it breaks a lot.

Now, make the SSPI auth mockable and testable.
2023-09-17 23:32:56 +00:00
JakobDev
c548dde205
More refactoring of db.DefaultContext (#27083)
Next step of #27065
2023-09-15 06:13:19 +00:00
JakobDev
76659b1114
Reduce usage of db.DefaultContext (#27073)
Part of #27065

This reduces the usage of `db.DefaultContext`. I think I've got enough
files for the first PR. When this is merged, I will continue working on
this.

Considering how many files this PR affect, I hope it won't take to long
to merge, so I don't end up in the merge conflict hell.

---------

Co-authored-by: wxiaoguang <wxiaoguang@gmail.com>
2023-09-14 17:09:32 +00:00
KN4CK3R
591f586bf1
Extract auth middleware from service (#27028)
Related #27027

Extract the router logic from `services/auth/middleware.go` into
`routers/web` <-> `routers/common` <-> `routers/api`.
2023-09-12 08:15:16 +02:00
Sven Seeberg
5f7fa27a44
Improve LDAP group config documentation, fixes #21159 (#21227)
Improve the wording of the LDAP group attributes documentation and
expand the examples.
2023-09-05 13:18:53 -04:00
KN4CK3R
0eebeeec90
Remove Named interface (#26913)
`Named` is implemented by every `Method` and future implementations
should implement the method too.
2023-09-05 15:58:30 +00:00
Jack Hay
c0ab7070e5
Update team invitation email link (#26550)
Co-authored-by: Kyle D <kdumontnu@gmail.com>
Co-authored-by: Jonathan Tran <jonnytran@gmail.com>
2023-08-31 16:26:13 +00:00
KN4CK3R
5315153059
Use Set[Type] instead of map[Type]bool/struct{}. (#26804) 2023-08-30 06:55:25 +00:00
wxiaoguang
c91a7e8dbb
Use object-fit: contain for oauth2 custom icons (#26493) 2023-08-14 16:21:04 +00:00
wxiaoguang
ed1be4ca68
Handle base64 decoding correctly to avoid panic (#26483)
Fix the panic if the "base64 secret" is too long.
2023-08-14 10:30:16 +00:00
harryzcy
0f9f6567bb
Bump github.com/golang-jwt/jwt to v5 (#25975)
Bumping `github.com/golang-jwt/jwt` from v4 to v5.

`github.com/golang-jwt/jwt` v5 is bringing some breaking changes:

- standard `Valid()` method on claims is removed. It's replaced by
`ClaimsValidator` interface implementing `Validator()` method instead,
which is called after standard validation. Gitea doesn't seem to be
using this logic.
- `jwt.Token` has a field `Valid`, so it's checked in `ParseToken`
function in `services/auth/source/oauth2/token.go`

---------

Co-authored-by: Giteabot <teabot@gitea.io>
2023-07-19 09:57:10 +00:00
wxiaoguang
265a28802a
Fix SSPI auth panic (#25955)
Try to fix #25952

Co-authored-by: Giteabot <teabot@gitea.io>
2023-07-18 17:32:49 +00:00
caicandong
491cc06ffe
Fix the error message when the token is incorrect (#25701)
we refactored `userIDFromToken` for the token parsing part into a new
function `parseToken`. `parseToken` returns the string `token` from
request, and a boolean `ok` representing whether the token exists or
not. So we can distinguish between token non-existence and token
inconsistency in the `verfity` function, thus solving the problem of no
proper error message when the token is inconsistent.
close #24439  
related #22119

---------

Co-authored-by: Jason Song <i@wolfogre.com>
Co-authored-by: Giteabot <teabot@gitea.io>
2023-07-11 10:04:28 +08:00
silverwind
88f835192d
Replace interface{} with any (#25686)
Result of running `perl -p -i -e 's#interface\{\}#any#g' **/*` and `make fmt`.

Basically the same [as golang did](2580d0e08d).
2023-07-04 18:36:08 +00:00
Lunny Xiao
0403bd989f
Log the real reason when authentication fails (but don't show the user) (#25414) 2023-07-03 18:39:38 -04:00
Zettat123
a55ff0dd99
Change default email domain for LDAP users (#25425)
Fixes #21169

Change `localhost` to `localhost.local`
2023-06-22 08:16:12 +00:00
Zettat123
33cd74ad70
Fix LDAP sync when Username Attribute is empty (#25278)
Fix #21072

![image](https://github.com/go-gitea/gitea/assets/15528715/96b30beb-7f88-4a60-baae-2e5ad8049555)

Username Attribute is not a required item when creating an
authentication source. If Username Attribute is empty, the username
value of LDAP user cannot be read, so all users from LDAP will be marked
as inactive by mistake when synchronizing external users.

This PR improves the sync logic, if username is empty, the email address
will be used to find user.
2023-06-20 11:04:13 +08:00