Add M365 Login plugin: Microsoft Entra ID sign-in for existing users

Adds a WordPress plugin that places a customisable "Sign in with
Microsoft" button on wp-login.php and signs existing users in via the
OpenID Connect authorization code flow with PKCE. Users are matched by
e-mail address only; no accounts are created.

Security: single-use state/nonce bound to an HttpOnly cookie, ID token
signature verification against Microsoft's JWKS (RS256 only) with
issuer/audience/tenant/expiry/nonce checks, optional tenant pinning,
account binding to the Microsoft object ID, e-mail domain allow-list,
client secret encrypted at rest (AES-256-GCM).

Admin: settings screen with connection, button and security tabs, live
button preview, colour presets, media-library icon picker, redirect URI
copy button and tenant connectivity test.

Packaging for WordPress.org: readme.txt with External services section,
GPL-2.0 license, uninstall.php, POT + German translations, .distignore,
build script, PHPCS config and CI running Plugin Check.

Co-Authored-By: Claude Fable 5.1 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01JJxAHYdMfKPoN4koRc4Ci2
This commit is contained in:
friloo 2026-09-22 14:21:10 +00:00
commit 3e3e87b399
No known key found for this signature in database
35 changed files with 5413 additions and 0 deletions

20
.distignore Normal file
View file

@ -0,0 +1,20 @@
# Files excluded from the distributable ZIP / SVN trunk.
.git
.github
.gitattributes
.gitignore
.distignore
.editorconfig
.wordpress-org
bin
docs
node_modules
vendor
tests
composer.json
composer.lock
phpcs.xml.dist
phpunit.xml.dist
README.md
CHANGELOG.md
*.zip

15
.editorconfig Normal file
View file

@ -0,0 +1,15 @@
root = true
[*]
charset = utf-8
end_of_line = lf
insert_final_newline = true
trim_trailing_whitespace = true
indent_style = tab
[*.{md,yml,yaml,json}]
indent_style = space
indent_size = 2
[*.txt]
trim_trailing_whitespace = false

22
.gitattributes vendored Normal file
View file

@ -0,0 +1,22 @@
# Keep the GitHub archive identical to the wp.org distribution.
.git* export-ignore
.github export-ignore
.distignore export-ignore
.editorconfig export-ignore
.wordpress-org export-ignore
bin export-ignore
docs export-ignore
composer.json export-ignore
composer.lock export-ignore
phpcs.xml.dist export-ignore
README.md export-ignore
CHANGELOG.md export-ignore
*.php text eol=lf
*.css text eol=lf
*.js text eol=lf
*.txt text eol=lf
*.md text eol=lf
*.po text eol=lf
*.pot text eol=lf
*.mo binary

51
.github/workflows/ci.yml vendored Normal file
View file

@ -0,0 +1,51 @@
name: CI
on:
push:
branches: [main]
pull_request:
jobs:
lint:
name: PHP lint (${{ matrix.php }})
runs-on: ubuntu-latest
strategy:
fail-fast: false
matrix:
php: ['7.4', '8.0', '8.1', '8.2', '8.3', '8.4']
steps:
- uses: actions/checkout@v4
- uses: shivammathur/setup-php@v2
with:
php-version: ${{ matrix.php }}
coverage: none
- name: Syntax check
run: find . -path ./vendor -prune -o -name '*.php' -print0 | xargs -0 -n1 php -l
phpcs:
name: WordPress Coding Standards
runs-on: ubuntu-latest
steps:
- uses: actions/checkout@v4
- uses: shivammathur/setup-php@v2
with:
php-version: '8.2'
coverage: none
tools: composer
- name: Install dev dependencies
run: composer install --no-interaction --prefer-dist
- name: Run PHPCS
run: vendor/bin/phpcs --report=checkstyle | cs2pr || vendor/bin/phpcs
plugin-check:
name: WordPress.org Plugin Check
runs-on: ubuntu-latest
steps:
- uses: actions/checkout@v4
- name: Build distributable
run: bash bin/build-zip.sh
- name: Run Plugin Check
uses: wordpress/plugin-check-action@v1
with:
build-dir: ./build/m365-login
exclude-directories: ''

8
.gitignore vendored Normal file
View file

@ -0,0 +1,8 @@
/vendor/
/node_modules/
/build/
/dist/
*.zip
.DS_Store
Thumbs.db
.phpcs-cache

12
.wordpress-org/README.md Normal file
View file

@ -0,0 +1,12 @@
# WordPress.org assets
Files in this folder are **not** shipped with the plugin. They are uploaded to the
`assets/` directory of the WordPress.org SVN repository once the plugin is approved:
| File | Purpose | Size |
| --- | --- | --- |
| `icon.svg` | Plugin icon (directory + plugin installer) | vector, or `icon-128x128.png` / `icon-256x256.png` |
| `banner-772x250.png` | Directory page header (not included yet) | 772×250 (+ `banner-1544x500.png` for HiDPI) |
| `screenshot-1.png` … | Screenshots referenced from `readme.txt` | any, PNG/JPG |
Screenshot order must match the `== Screenshots ==` section in `readme.txt`.

16
.wordpress-org/icon.svg Normal file
View file

@ -0,0 +1,16 @@
<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 256 256" width="256" height="256">
<rect width="256" height="256" rx="48" fill="#1b1b1f"/>
<g transform="translate(58 58)">
<rect x="0" y="0" width="66" height="66" rx="6" fill="#f25022"/>
<rect x="74" y="0" width="66" height="66" rx="6" fill="#7fba00"/>
<rect x="0" y="74" width="66" height="66" rx="6" fill="#00a4ef"/>
<rect x="74" y="74" width="66" height="66" rx="6" fill="#ffb900"/>
</g>
<g transform="translate(150 150)">
<circle cx="36" cy="36" r="44" fill="#1b1b1f"/>
<circle cx="36" cy="36" r="36" fill="#0078d4"/>
<path d="M24 34v-6a12 12 0 0 1 24 0v6" fill="none" stroke="#fff" stroke-width="5" stroke-linecap="round"/>
<rect x="18" y="33" width="36" height="24" rx="5" fill="#fff"/>
<circle cx="36" cy="44" r="3.5" fill="#0078d4"/>
</g>
</svg>

After

Width:  |  Height:  |  Size: 855 B

17
CHANGELOG.md Normal file
View file

@ -0,0 +1,17 @@
# Changelog
All notable changes to this project are documented in this file. The format follows
[Keep a Changelog](https://keepachangelog.com/) and the plugin adheres to
[Semantic Versioning](https://semver.org/).
## [1.0.0] 2026-09-22
### Added
- "Sign in with Microsoft" button on `wp-login.php` (OpenID Connect authorization code flow with PKCE).
- Matching of existing WordPress users by e-mail address (optional UPN fallback), no user provisioning.
- Settings screen (Settings → M365 Login) with connection, button and security tabs, live button preview, colour presets, media-library icon picker, redirect-URI copy button and tenant connectivity test.
- ID token verification against Microsoft's JWKS (RS256, issuer, audience, tenant, expiry, nonce).
- Encrypted client secret storage (AES-256-GCM).
- Account binding to the Microsoft object ID, e-mail domain allow-list.
- `[m365_login_button]` shortcode and developer hooks.
- German translation.

339
LICENSE Normal file
View file

@ -0,0 +1,339 @@
GNU GENERAL PUBLIC LICENSE
Version 2, June 1991
Copyright (C) 1989, 1991 Free Software Foundation, Inc.,
51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
Everyone is permitted to copy and distribute verbatim copies
of this license document, but changing it is not allowed.
Preamble
The licenses for most software are designed to take away your
freedom to share and change it. By contrast, the GNU General Public
License is intended to guarantee your freedom to share and change free
software--to make sure the software is free for all its users. This
General Public License applies to most of the Free Software
Foundation's software and to any other program whose authors commit to
using it. (Some other Free Software Foundation software is covered by
the GNU Lesser General Public License instead.) You can apply it to
your programs, too.
When we speak of free software, we are referring to freedom, not
price. Our General Public Licenses are designed to make sure that you
have the freedom to distribute copies of free software (and charge for
this service if you wish), that you receive source code or can get it
if you want it, that you can change the software or use pieces of it
in new free programs; and that you know you can do these things.
To protect your rights, we need to make restrictions that forbid
anyone to deny you these rights or to ask you to surrender the rights.
These restrictions translate to certain responsibilities for you if you
distribute copies of the software, or if you modify it.
For example, if you distribute copies of such a program, whether
gratis or for a fee, you must give the recipients all the rights that
you have. You must make sure that they, too, receive or can get the
source code. And you must show them these terms so they know their
rights.
We protect your rights with two steps: (1) copyright the software, and
(2) offer you this license which gives you legal permission to copy,
distribute and/or modify the software.
Also, for each author's protection and ours, we want to make certain
that everyone understands that there is no warranty for this free
software. If the software is modified by someone else and passed on, we
want its recipients to know that what they have is not the original, so
that any problems introduced by others will not reflect on the original
authors' reputations.
Finally, any free program is threatened constantly by software
patents. We wish to avoid the danger that redistributors of a free
program will individually obtain patent licenses, in effect making the
program proprietary. To prevent this, we have made it clear that any
patent must be licensed for everyone's free use or not licensed at all.
The precise terms and conditions for copying, distribution and
modification follow.
GNU GENERAL PUBLIC LICENSE
TERMS AND CONDITIONS FOR COPYING, DISTRIBUTION AND MODIFICATION
0. This License applies to any program or other work which contains
a notice placed by the copyright holder saying it may be distributed
under the terms of this General Public License. The "Program", below,
refers to any such program or work, and a "work based on the Program"
means either the Program or any derivative work under copyright law:
that is to say, a work containing the Program or a portion of it,
either verbatim or with modifications and/or translated into another
language. (Hereinafter, translation is included without limitation in
the term "modification".) Each licensee is addressed as "you".
Activities other than copying, distribution and modification are not
covered by this License; they are outside its scope. The act of
running the Program is not restricted, and the output from the Program
is covered only if its contents constitute a work based on the
Program (independent of having been made by running the Program).
Whether that is true depends on what the Program does.
1. You may copy and distribute verbatim copies of the Program's
source code as you receive it, in any medium, provided that you
conspicuously and appropriately publish on each copy an appropriate
copyright notice and disclaimer of warranty; keep intact all the
notices that refer to this License and to the absence of any warranty;
and give any other recipients of the Program a copy of this License
along with the Program.
You may charge a fee for the physical act of transferring a copy, and
you may at your option offer warranty protection in exchange for a fee.
2. You may modify your copy or copies of the Program or any portion
of it, thus forming a work based on the Program, and copy and
distribute such modifications or work under the terms of Section 1
above, provided that you also meet all of these conditions:
a) You must cause the modified files to carry prominent notices
stating that you changed the files and the date of any change.
b) You must cause any work that you distribute or publish, that in
whole or in part contains or is derived from the Program or any
part thereof, to be licensed as a whole at no charge to all third
parties under the terms of this License.
c) If the modified program normally reads commands interactively
when run, you must cause it, when started running for such
interactive use in the most ordinary way, to print or display an
announcement including an appropriate copyright notice and a
notice that there is no warranty (or else, saying that you provide
a warranty) and that users may redistribute the program under
these conditions, and telling the user how to view a copy of this
License. (Exception: if the Program itself is interactive but
does not normally print such an announcement, your work based on
the Program is not required to print an announcement.)
These requirements apply to the modified work as a whole. If
identifiable sections of that work are not derived from the Program,
and can be reasonably considered independent and separate works in
themselves, then this License, and its terms, do not apply to those
sections when you distribute them as separate works. But when you
distribute the same sections as part of a whole which is a work based
on the Program, the distribution of the whole must be on the terms of
this License, whose permissions for other licensees extend to the
entire whole, and thus to each and every part regardless of who wrote it.
Thus, it is not the intent of this section to claim rights or contest
your rights to work written entirely by you; rather, the intent is to
exercise the right to control the distribution of derivative or
collective works based on the Program.
In addition, mere aggregation of another work not based on the Program
with the Program (or with a work based on the Program) on a volume of
a storage or distribution medium does not bring the other work under
the scope of this License.
3. You may copy and distribute the Program (or a work based on it,
under Section 2) in object code or executable form under the terms of
Sections 1 and 2 above provided that you also do one of the following:
a) Accompany it with the complete corresponding machine-readable
source code, which must be distributed under the terms of Sections
1 and 2 above on a medium customarily used for software interchange; or,
b) Accompany it with a written offer, valid for at least three
years, to give any third party, for a charge no more than your
cost of physically performing source distribution, a complete
machine-readable copy of the corresponding source code, to be
distributed under the terms of Sections 1 and 2 above on a medium
customarily used for software interchange; or,
c) Accompany it with the information you received as to the offer
to distribute corresponding source code. (This alternative is
allowed only for noncommercial distribution and only if you
received the program in object code or executable form with such
an offer, in accord with Subsection b above.)
The source code for a work means the preferred form of the work for
making modifications to it. For an executable work, complete source
code means all the source code for all modules it contains, plus any
associated interface definition files, plus the scripts used to
control compilation and installation of the executable. However, as a
special exception, the source code distributed need not include
anything that is normally distributed (in either source or binary
form) with the major components (compiler, kernel, and so on) of the
operating system on which the executable runs, unless that component
itself accompanies the executable.
If distribution of executable or object code is made by offering
access to copy from a designated place, then offering equivalent
access to copy the source code from the same place counts as
distribution of the source code, even though third parties are not
compelled to copy the source along with the object code.
4. You may not copy, modify, sublicense, or distribute the Program
except as expressly provided under this License. Any attempt
otherwise to copy, modify, sublicense or distribute the Program is
void, and will automatically terminate your rights under this License.
However, parties who have received copies, or rights, from you under
this License will not have their licenses terminated so long as such
parties remain in full compliance.
5. You are not required to accept this License, since you have not
signed it. However, nothing else grants you permission to modify or
distribute the Program or its derivative works. These actions are
prohibited by law if you do not accept this License. Therefore, by
modifying or distributing the Program (or any work based on the
Program), you indicate your acceptance of this License to do so, and
all its terms and conditions for copying, distributing or modifying
the Program or works based on it.
6. Each time you redistribute the Program (or any work based on the
Program), the recipient automatically receives a license from the
original licensor to copy, distribute or modify the Program subject to
these terms and conditions. You may not impose any further
restrictions on the recipients' exercise of the rights granted herein.
You are not responsible for enforcing compliance by third parties to
this License.
7. If, as a consequence of a court judgment or allegation of patent
infringement or for any other reason (not limited to patent issues),
conditions are imposed on you (whether by court order, agreement or
otherwise) that contradict the conditions of this License, they do not
excuse you from the conditions of this License. If you cannot
distribute so as to satisfy simultaneously your obligations under this
License and any other pertinent obligations, then as a consequence you
may not distribute the Program at all. For example, if a patent
license would not permit royalty-free redistribution of the Program by
all those who receive copies directly or indirectly through you, then
the only way you could satisfy both it and this License would be to
refrain entirely from distribution of the Program.
If any portion of this section is held invalid or unenforceable under
any particular circumstance, the balance of the section is intended to
apply and the section as a whole is intended to apply in other
circumstances.
It is not the purpose of this section to induce you to infringe any
patents or other property right claims or to contest validity of any
such claims; this section has the sole purpose of protecting the
integrity of the free software distribution system, which is
implemented by public license practices. Many people have made
generous contributions to the wide range of software distributed
through that system in reliance on consistent application of that
system; it is up to the author/donor to decide if he or she is willing
to distribute software through any other system and a licensee cannot
impose that choice.
This section is intended to make thoroughly clear what is believed to
be a consequence of the rest of this License.
8. If the distribution and/or use of the Program is restricted in
certain countries either by patents or by copyrighted interfaces, the
original copyright holder who places the Program under this License
may add an explicit geographical distribution limitation excluding
those countries, so that distribution is permitted only in or among
countries not thus excluded. In such case, this License incorporates
the limitation as if written in the body of this License.
9. The Free Software Foundation may publish revised and/or new versions
of the General Public License from time to time. Such new versions will
be similar in spirit to the present version, but may differ in detail to
address new problems or concerns.
Each version is given a distinguishing version number. If the Program
specifies a version number of this License which applies to it and "any
later version", you have the option of following the terms and conditions
either of that version or of any later version published by the Free
Software Foundation. If the Program does not specify a version number of
this License, you may choose any version ever published by the Free Software
Foundation.
10. If you wish to incorporate parts of the Program into other free
programs whose distribution conditions are different, write to the author
to ask for permission. For software which is copyrighted by the Free
Software Foundation, write to the Free Software Foundation; we sometimes
make exceptions for this. Our decision will be guided by the two goals
of preserving the free status of all derivatives of our free software and
of promoting the sharing and reuse of software generally.
NO WARRANTY
11. BECAUSE THE PROGRAM IS LICENSED FREE OF CHARGE, THERE IS NO WARRANTY
FOR THE PROGRAM, TO THE EXTENT PERMITTED BY APPLICABLE LAW. EXCEPT WHEN
OTHERWISE STATED IN WRITING THE COPYRIGHT HOLDERS AND/OR OTHER PARTIES
PROVIDE THE PROGRAM "AS IS" WITHOUT WARRANTY OF ANY KIND, EITHER EXPRESSED
OR IMPLIED, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. THE ENTIRE RISK AS
TO THE QUALITY AND PERFORMANCE OF THE PROGRAM IS WITH YOU. SHOULD THE
PROGRAM PROVE DEFECTIVE, YOU ASSUME THE COST OF ALL NECESSARY SERVICING,
REPAIR OR CORRECTION.
12. IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING
WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MAY MODIFY AND/OR
REDISTRIBUTE THE PROGRAM AS PERMITTED ABOVE, BE LIABLE TO YOU FOR DAMAGES,
INCLUDING ANY GENERAL, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES ARISING
OUT OF THE USE OR INABILITY TO USE THE PROGRAM (INCLUDING BUT NOT LIMITED
TO LOSS OF DATA OR DATA BEING RENDERED INACCURATE OR LOSSES SUSTAINED BY
YOU OR THIRD PARTIES OR A FAILURE OF THE PROGRAM TO OPERATE WITH ANY OTHER
PROGRAMS), EVEN IF SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE
POSSIBILITY OF SUCH DAMAGES.
END OF TERMS AND CONDITIONS
How to Apply These Terms to Your New Programs
If you develop a new program, and you want it to be of the greatest
possible use to the public, the best way to achieve this is to make it
free software which everyone can redistribute and change under these terms.
To do so, attach the following notices to the program. It is safest
to attach them to the start of each source file to most effectively
convey the exclusion of warranty; and each file should have at least
the "copyright" line and a pointer to where the full notice is found.
<one line to give the program's name and a brief idea of what it does.>
Copyright (C) <year> <name of author>
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 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 General Public License for more details.
You should have received a copy of the GNU General Public License along
with this program; if not, write to the Free Software Foundation, Inc.,
51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
Also add information on how to contact you by electronic and paper mail.
If the program is interactive, make it output a short notice like this
when it starts in an interactive mode:
Gnomovision version 69, Copyright (C) year name of author
Gnomovision comes with ABSOLUTELY NO WARRANTY; for details type `show w'.
This is free software, and you are welcome to redistribute it
under certain conditions; type `show c' for details.
The hypothetical commands `show w' and `show c' should show the appropriate
parts of the General Public License. Of course, the commands you use may
be called something other than `show w' and `show c'; they could even be
mouse-clicks or menu items--whatever suits your program.
You should also get your employer (if you work as a programmer) or your
school, if any, to sign a "copyright disclaimer" for the program, if
necessary. Here is a sample; alter the names:
Yoyodyne, Inc., hereby disclaims all copyright interest in the program
`Gnomovision' (which makes passes at compilers) written by James Hacker.
<signature of Ty Coon>, 1 April 1989
Ty Coon, President of Vice
This General Public License does not permit incorporating your program into
proprietary programs. If your program is a subroutine library, you may
consider it more useful to permit linking proprietary applications with the
library. If this is what you want to do, use the GNU Lesser General
Public License instead of this License.

94
README.md Normal file
View file

@ -0,0 +1,94 @@
# M365 Login für WordPress
Ein schlankes, sicherheitsorientiertes WordPress-Plugin, das einen **„Login mit Microsoft“-Button** auf die
Anmeldeseite (`wp-login.php`) setzt. Bestehende WordPress-Benutzer melden sich mit ihrem Microsoft 365 /
Entra-ID-Konto an. Der gemeinsame Schlüssel ist die **E-Mail-Adresse** es werden keine Benutzer angelegt.
> Plugin-Slug / Text Domain: `m365-login` · Lizenz: GPL-2.0-or-later · PHP ≥ 7.4 · WordPress ≥ 6.0
## Funktionen
- **Button auf der Login-Seite** Text, Icon (Microsoft-Logo oder eigenes Bild aus der Mediathek), Hintergrund-,
Hover-, Text- und Rahmenfarbe, Eckenradius und Position (über/unter dem Formular) sind im Backend einstellbar,
mit Live-Vorschau und Farb-Presets.
- **Aufgeräumte Einstellungsseite** unter *Einstellungen → M365 Login* mit Redirect-URI zum Kopieren,
Tenant-Verbindungstest und 5-Schritte-Anleitung.
- **Kein Provisioning**: Anmeldung nur, wenn ein WordPress-Benutzer mit derselben E-Mail-Adresse existiert.
- **Shortcode** `[m365_login_button redirect="/mein-konto/"]` für eigene Login-Seiten.
- Vollständig übersetzbar, deutsche Übersetzung enthalten.
## Sicherheit
| Maßnahme | Umsetzung |
| --- | --- |
| Authorization Code Flow **mit PKCE (S256)** | Tokens laufen ausschließlich Server-zu-Server, nie durch den Browser. |
| **State & Nonce** | Einmalig, 10 Minuten gültig, per HttpOnly/SameSite-Cookie an den Browser gebunden (CSRF-/Replay-Schutz, verhindert Login-CSRF). |
| **ID-Token-Prüfung** | Signatur gegen Microsofts JWKS (RS256, Schlüssel-Rollover wird abgefangen), Issuer, Audience, Tenant, `exp`/`nbf`/`iat`, Nonce. `alg=none`/HMAC werden abgelehnt. |
| **Tenant-Pinning** | Bei konfigurierter Tenant-GUID werden Tokens anderer Tenants abgewiesen. |
| **Konto-Bindung** | Beim ersten Login wird die unveränderliche Microsoft-Objekt-ID am Benutzer gespeichert; spätere Logins mit gleicher E-Mail, aber anderer Identität werden abgelehnt. |
| **Domain-Allowlist** | Optional nur bestimmte E-Mail-Domains zulassen. |
| **Client Secret verschlüsselt** | AES-256-GCM, Schlüssel aus den WordPress-Salts abgeleitet; wird nie wieder angezeigt. |
| **WordPress-Standards** | Capability-Checks, Nonces, Sanitizing aller Eingaben, Escaping aller Ausgaben, `wp_safe_redirect`, keine externen Assets. |
## Installation & Einrichtung
1. Ordner in `wp-content/plugins/` legen (oder ZIP aus `bin/build-zip.sh` hochladen) und aktivieren.
2. *Einstellungen → M365 Login* öffnen und die **Redirect-URI** aus der Seitenleiste kopieren
(`https://deine-seite.tld/m365-login/callback`).
3. Im [Microsoft Entra Admin Center](https://entra.microsoft.com/) → **App-Registrierungen → Neue Registrierung**:
- Name frei wählbar, z. B. „WordPress Login“.
- Kontotypen: *Nur Konten in diesem Organisationsverzeichnis* (Single Tenant).
- Plattform **Web**, Redirect-URI einfügen.
4. Auf der Übersichtsseite **Anwendungs-ID (Client)** und **Verzeichnis-ID (Mandant)** kopieren und im Plugin eintragen.
5. **Zertifikate & Geheimnisse → Neuer geheimer Clientschlüssel** den *Wert* (nicht die ID) ins Plugin eintragen.
Ablaufdatum notieren; abgelaufene Secrets müssen erneuert werden.
6. **Tokenkonfiguration → Optionalen Anspruch hinzufügen → ID → `email`** (empfohlen). Die delegierten
Berechtigungen `openid`, `profile`, `email` sind standardmäßig vorhanden.
7. Speichern. Der Button erscheint auf `wp-login.php`; Gestaltung im Tab **Button**.
Stelle sicher, dass die E-Mail-Adressen der WordPress-Benutzer mit denen in Microsoft 365 übereinstimmen.
## Entwickler-Hooks
```php
// Button z. B. nur für eine bestimmte Domain anzeigen
add_filter( 'm365_login_show_button', fn( $show ) => $show && 'intranet.example.com' === $_SERVER['HTTP_HOST'] );
// domain_hint an Microsoft senden
add_filter( 'm365_login_authorize_params', function ( $params ) {
$params['domain_hint'] = 'contoso.com';
return $params;
} );
// Login zusätzlich anhand der Claims verbieten (z. B. Gruppenmitgliedschaft)
add_filter( 'm365_login_allow_user', function ( $allowed, WP_User $user, array $claims ) {
return $allowed && ! empty( $claims['groups'] );
}, 10, 3 );
add_action( 'm365_login_success', function ( WP_User $user, array $claims ) {
// z. B. Anzeigenamen synchronisieren
}, 10, 2 );
```
Weitere: `m365_login_match_email` (E-Mail vor dem Lookup anpassen).
## Entwicklung
```bash
composer install # PHPCS + WordPress Coding Standards
composer lint # php -l über alle Dateien
composer phpcs # Coding-Standards-Prüfung
bash bin/build-zip.sh # build/m365-login.zip für Upload/Einreichung
python3 bin/compile-mo.py # languages/*.po → *.mo
```
Die GitHub-Actions-Pipeline (`.github/workflows/ci.yml`) führt Syntax-Check (PHP 7.48.4), PHPCS und den
offiziellen **WordPress Plugin Check** aus.
## Einreichung bei WordPress.org
Siehe [docs/wordpress-org-einreichung.md](docs/wordpress-org-einreichung.md) für die vollständige Checkliste.
## Lizenz
GPL-2.0-or-later siehe [LICENSE](LICENSE).

578
assets/css/admin.css Normal file
View file

@ -0,0 +1,578 @@
/* M365 Login settings screen */
.m365-admin {
--m365-accent: #0078d4;
--m365-accent-dark: #106ebe;
--m365-border: #dcdcde;
--m365-muted: #646970;
--m365-radius: 10px;
max-width: 1180px;
}
.m365-admin h1 {
font-size: 22px;
font-weight: 600;
line-height: 1.2;
margin: 0 0 4px;
padding: 0;
}
.m365-admin__header {
display: flex;
align-items: center;
justify-content: space-between;
gap: 16px;
flex-wrap: wrap;
margin: 12px 0 20px;
}
.m365-admin__brand {
display: flex;
align-items: center;
gap: 16px;
}
.m365-admin__brand p {
margin: 0;
color: var(--m365-muted);
}
.m365-admin__logo {
display: inline-flex;
align-items: center;
justify-content: center;
width: 52px;
height: 52px;
background: #fff;
border: 1px solid var(--m365-border);
border-radius: 12px;
box-shadow: 0 1px 2px rgba(0, 0, 0, 0.04);
}
.m365-admin__logo svg {
width: 26px;
height: 26px;
}
.m365-admin__status {
display: inline-flex;
align-items: center;
gap: 8px;
padding: 6px 12px;
border-radius: 999px;
font-size: 13px;
font-weight: 500;
background: #fcf0e4;
color: #8a4b00;
}
.m365-admin__status.is-ok {
background: #e6f4ea;
color: #1e6b31;
}
.m365-admin__status-dot {
width: 8px;
height: 8px;
border-radius: 50%;
background: currentColor;
}
/* Tabs */
.m365-admin__tabs {
display: flex;
gap: 4px;
border-bottom: 1px solid var(--m365-border);
margin-bottom: 20px;
}
.m365-admin__tab {
appearance: none;
background: none;
border: 0;
border-bottom: 2px solid transparent;
margin-bottom: -1px;
padding: 10px 14px;
font-size: 14px;
font-weight: 500;
color: var(--m365-muted);
cursor: pointer;
}
.m365-admin__tab:hover {
color: #1d2327;
}
.m365-admin__tab.is-active {
color: var(--m365-accent);
border-bottom-color: var(--m365-accent);
}
.m365-admin__tab:focus-visible {
outline: 2px solid var(--m365-accent);
outline-offset: -2px;
border-radius: 4px;
}
.m365-admin__panel {
display: none;
}
.m365-admin__panel.is-active {
display: block;
}
/* Layout */
.m365-admin__layout {
display: grid;
grid-template-columns: minmax(0, 1fr) 340px;
gap: 20px;
align-items: start;
}
@media (max-width: 1024px) {
.m365-admin__layout {
grid-template-columns: 1fr;
}
}
.m365-admin__actions {
margin-top: 20px;
}
/* Cards */
.m365-card {
background: #fff;
border: 1px solid var(--m365-border);
border-radius: var(--m365-radius);
padding: 24px;
margin-bottom: 20px;
box-shadow: 0 1px 2px rgba(0, 0, 0, 0.03);
}
.m365-card--accent {
border-color: #b6d7f2;
background: linear-gradient(180deg, #f3f9fe 0%, #fff 100%);
}
.m365-card--muted {
background: #f6f7f7;
}
.m365-card__title {
font-size: 15px;
font-weight: 600;
margin: 0 0 6px;
}
.m365-card__intro {
margin: 0 0 20px;
color: var(--m365-muted);
}
/* Fields */
.m365-field {
margin-bottom: 20px;
}
.m365-field:last-child {
margin-bottom: 0;
}
.m365-field > label,
.m365-field__label {
display: block;
font-weight: 600;
margin-bottom: 6px;
}
.m365-field input[type="text"],
.m365-field input[type="url"],
.m365-field input[type="password"],
.m365-field select,
.m365-field textarea {
width: 100%;
max-width: 100%;
border-radius: 6px;
min-height: 36px;
}
.m365-field .regular-text {
width: 100%;
}
.m365-field__row {
display: flex;
gap: 8px;
align-items: center;
}
.m365-field__row > input {
flex: 1 1 auto;
}
.m365-field__row .button {
flex: 0 0 auto;
min-height: 36px;
display: inline-flex;
align-items: center;
}
.m365-field .description {
margin-top: 6px;
}
.m365-grid {
display: grid;
grid-template-columns: repeat(2, minmax(0, 1fr));
gap: 0 20px;
}
.m365-grid--4 {
grid-template-columns: repeat(4, minmax(0, 1fr));
}
@media (max-width: 782px) {
.m365-grid,
.m365-grid--4 {
grid-template-columns: 1fr;
}
}
.m365-check {
display: inline-flex;
gap: 8px;
align-items: flex-start;
margin: 8px 0 0;
}
.m365-check--block {
display: flex;
padding: 14px 16px;
border: 1px solid var(--m365-border);
border-radius: 8px;
margin: 0 0 12px;
cursor: pointer;
}
.m365-check--block:hover {
border-color: #b6d7f2;
background: #fbfdff;
}
.m365-check--block input {
margin-top: 3px;
}
.m365-check--block strong {
display: block;
font-weight: 600;
}
.m365-check--block em {
display: block;
font-style: normal;
color: var(--m365-muted);
margin-top: 2px;
}
.m365-inline-result {
margin-top: 10px;
padding: 10px 12px;
border-radius: 6px;
font-size: 13px;
background: #f0f6fc;
border: 1px solid #c5d9ed;
}
.m365-inline-result.is-success {
background: #e6f4ea;
border-color: #a6d8b2;
}
.m365-inline-result.is-error {
background: #fcf0f1;
border-color: #f0b8bd;
}
.m365-inline-result code {
display: block;
margin-top: 4px;
font-size: 12px;
word-break: break-all;
}
.m365-warning {
margin: 12px 0 0;
padding: 10px 12px;
border-radius: 6px;
background: #fcf0e4;
color: #8a4b00;
font-size: 13px;
}
.m365-toggle-secret .dashicons {
line-height: 1;
vertical-align: middle;
}
.m365-link-danger {
color: #b32d2e;
}
/* Preview */
.m365-preview {
margin-bottom: 24px;
}
.m365-preview__label {
display: block;
font-size: 11px;
text-transform: uppercase;
letter-spacing: 0.06em;
color: var(--m365-muted);
margin-bottom: 8px;
}
.m365-preview__stage {
display: flex;
justify-content: center;
padding: 32px 24px;
background: #f0f0f1 radial-gradient(circle at 1px 1px, #dcdcde 1px, transparent 0);
background-size: 16px 16px;
border: 1px solid var(--m365-border);
border-radius: 8px;
}
.m365-login--preview {
width: 272px;
background: #fff;
border: 1px solid #c3c4c7;
padding: 24px;
box-shadow: 0 1px 3px rgba(0, 0, 0, 0.04);
--m365-bg: #2f2f2f;
--m365-bg-hover: #1a1a1a;
--m365-color: #fff;
--m365-border: #2f2f2f;
--m365-radius: 4px;
}
.m365-login--preview .m365-login__divider {
position: relative;
text-align: center;
margin: 0 0 22px;
color: #646970;
font-size: 13px;
line-height: 1;
}
.m365-login--preview .m365-login__divider::before {
content: "";
position: absolute;
left: 0;
right: 0;
top: 50%;
height: 1px;
background: #dcdcde;
}
.m365-login--preview .m365-login__divider span {
position: relative;
background: #fff;
padding: 0 12px;
}
.m365-login--preview .m365-login__divider.is-hidden {
display: none;
}
.m365-login--preview .m365-login__button {
display: flex;
align-items: center;
justify-content: center;
gap: 12px;
box-sizing: border-box;
width: 100%;
min-height: 44px;
padding: 10px 16px;
background: var(--m365-bg);
color: var(--m365-color);
border: 1px solid var(--m365-border);
border-radius: var(--m365-radius);
font-size: 15px;
font-weight: 600;
line-height: 1.3;
text-decoration: none;
transition: background-color 0.15s ease;
}
.m365-login--preview .m365-login__button:hover {
background: var(--m365-bg-hover);
color: var(--m365-color);
}
.m365-login--preview .m365-login__button:focus {
box-shadow: none;
outline: none;
}
.m365-login--preview .m365-login__icon,
.m365-login--preview #m365-preview-icon img,
.m365-login--preview #m365-preview-icon svg {
width: 20px;
height: 20px;
display: block;
background: #fff;
padding: 3px;
box-sizing: content-box;
border-radius: 2px;
}
.m365-login--preview #m365-preview-icon.is-hidden {
display: none;
}
.m365-login--preview .m365-login__label {
white-space: nowrap;
overflow: hidden;
text-overflow: ellipsis;
}
/* Icon picker */
.m365-icon-picker {
display: flex;
gap: 16px;
align-items: flex-start;
margin-top: 12px;
}
.m365-icon-picker__thumb {
flex: 0 0 64px;
width: 64px;
height: 64px;
display: flex;
align-items: center;
justify-content: center;
background: #fff;
border: 1px solid var(--m365-border);
border-radius: 8px;
}
.m365-icon-picker__thumb img,
.m365-icon-picker__thumb svg {
max-width: 36px;
max-height: 36px;
}
.m365-icon-picker__controls {
flex: 1 1 auto;
}
.m365-icon-picker__controls .m365-field__row {
margin-top: 8px;
}
/* Colour pickers */
.m365-field .wp-picker-container {
display: block;
}
.m365-field .wp-picker-container .wp-color-result.button {
margin: 0;
min-height: 36px;
border-radius: 6px;
}
.m365-range-value {
font-weight: 400;
color: var(--m365-muted);
margin-left: 6px;
}
.m365-field input[type="range"] {
width: 100%;
margin-top: 10px;
accent-color: var(--m365-accent);
}
/* Presets */
.m365-presets {
display: flex;
flex-wrap: wrap;
gap: 8px;
align-items: center;
margin-top: 8px;
}
.m365-presets .m365-field__label {
width: 100%;
}
.m365-preset {
display: inline-flex;
align-items: center;
gap: 8px;
padding: 6px 12px 6px 8px;
background: #fff;
border: 1px solid var(--m365-border);
border-radius: 999px;
cursor: pointer;
font-size: 13px;
}
.m365-preset:hover {
border-color: var(--m365-accent);
}
.m365-preset span {
width: 16px;
height: 16px;
border-radius: 50%;
border: 1px solid rgba(0, 0, 0, 0.08);
}
/* Sidebar */
.m365-copy {
display: flex;
gap: 8px;
align-items: center;
margin-top: 8px;
}
.m365-copy code {
flex: 1 1 auto;
padding: 8px 10px;
font-size: 12px;
background: #fff;
border: 1px solid var(--m365-border);
border-radius: 6px;
word-break: break-all;
}
.m365-copy__button {
flex: 0 0 auto;
}
.m365-steps {
margin: 0;
padding-left: 20px;
}
.m365-steps li {
margin-bottom: 8px;
line-height: 1.5;
}
.m365-list {
margin: 8px 0 0;
padding-left: 18px;
list-style: disc;
}
.m365-list li {
margin-bottom: 6px;
line-height: 1.5;
}
.m365-card code {
font-size: 12px;
}

122
assets/css/login.css Normal file
View file

@ -0,0 +1,122 @@
/* M365 Login login screen button */
.m365-login {
--m365-bg: #2f2f2f;
--m365-bg-hover: #1a1a1a;
--m365-color: #ffffff;
--m365-border: #2f2f2f;
--m365-radius: 4px;
margin: 0 0 16px;
}
.m365-login--below {
background: #fff;
padding: 0 24px 26px;
margin: -1px 0 0;
box-shadow: 0 1px 3px rgba(0, 0, 0, 0.04);
border: 1px solid #c3c4c7;
border-top: 0;
}
body.m365-login-attached #loginform {
border-bottom: 0;
box-shadow: none;
}
.m365-login--above {
background: #fff;
padding: 24px;
margin: 20px 0 0;
box-shadow: 0 1px 3px rgba(0, 0, 0, 0.04);
border: 1px solid #c3c4c7;
}
.m365-login--above .m365-login__divider {
margin: 22px 0 0;
}
.m365-login__divider {
position: relative;
text-align: center;
margin: 0 0 22px;
color: #646970;
font-size: 13px;
line-height: 1;
}
.m365-login__divider::before {
content: "";
position: absolute;
left: 0;
right: 0;
top: 50%;
height: 1px;
background: #dcdcde;
}
.m365-login__divider span {
position: relative;
background: #fff;
padding: 0 12px;
text-transform: lowercase;
}
.m365-login__button {
display: flex;
align-items: center;
justify-content: center;
gap: 12px;
box-sizing: border-box;
width: 100%;
min-height: 44px;
padding: 10px 16px;
background: var(--m365-bg);
color: var(--m365-color);
border: 1px solid var(--m365-border);
border-radius: var(--m365-radius);
font-size: 15px;
font-weight: 600;
line-height: 1.3;
text-decoration: none;
cursor: pointer;
transition: background-color 0.15s ease, box-shadow 0.15s ease, transform 0.1s ease;
}
.m365-login__button:hover,
.m365-login__button:focus {
background: var(--m365-bg-hover);
color: var(--m365-color);
text-decoration: none;
}
.m365-login__button:focus {
outline: none;
box-shadow: 0 0 0 2px #fff, 0 0 0 4px var(--m365-bg-hover);
}
.m365-login__button:active {
transform: translateY(1px);
}
.m365-login__icon {
flex: 0 0 auto;
width: 20px;
height: 20px;
display: block;
background: #fff;
padding: 3px;
box-sizing: content-box;
border-radius: 2px;
}
.m365-login__label {
white-space: nowrap;
overflow: hidden;
text-overflow: ellipsis;
}
.m365-login--shortcode {
padding: 0;
border: 0;
background: transparent;
max-width: 360px;
}

189
assets/js/admin.js Normal file
View file

@ -0,0 +1,189 @@
/* global jQuery, wp, m365LoginAdmin */
( function ( $ ) {
'use strict';
var cfg = window.m365LoginAdmin || {};
var i18n = cfg.i18n || {};
$( function () {
var $preview = $( '#m365-preview' );
/* ---------------- Tabs ---------------- */
var $tabs = $( '.m365-admin__tab' );
var $panels = $( '.m365-admin__panel' );
function activate( name ) {
$tabs.removeClass( 'is-active' ).attr( 'aria-selected', 'false' ).filter( '[data-tab="' + name + '"]' ).addClass( 'is-active' ).attr( 'aria-selected', 'true' );
$panels.removeClass( 'is-active' ).filter( '[data-panel="' + name + '"]' ).addClass( 'is-active' );
try {
window.localStorage.setItem( 'm365LoginTab', name );
} catch ( e ) {}
}
$tabs.on( 'click', function () {
activate( $( this ).data( 'tab' ) );
} );
try {
var saved = window.localStorage.getItem( 'm365LoginTab' );
if ( saved && $tabs.filter( '[data-tab="' + saved + '"]' ).length ) {
activate( saved );
}
} catch ( e ) {}
// Jump to the tab that contains a validation error.
var $error = $( '.settings-error' ).first();
if ( $error.length && $error.text().toLowerCase().indexOf( 'tenant' ) !== -1 ) {
activate( 'connection' );
}
/* ---------------- Live preview ---------------- */
function setVar( name, value ) {
$preview[ 0 ].style.setProperty( '--m365-' + name, value );
}
function updateIcon() {
var show = $( '[data-preview="show-icon"]' ).is( ':checked' );
var url = $.trim( $( '#m365-icon-url' ).val() );
var $icon = $( '#m365-preview-icon' );
var $thumb = $( '#m365-icon-thumb' );
$icon.toggleClass( 'is-hidden', ! show );
if ( url ) {
var $img = $( '<img>', { src: url, alt: '' } );
$icon.empty().append( $img );
$thumb.empty().append( $img.clone() );
} else {
$icon.html( cfg.defaultLogo || '' );
$thumb.html( cfg.defaultLogo || '' );
}
}
$( '[data-preview="text"]' ).on( 'input', function () {
$( '#m365-preview-text' ).text( $( this ).val() );
} );
$( '[data-preview="divider"]' ).on( 'input', function () {
var val = $.trim( $( this ).val() );
$( '#m365-preview-divider' ).text( val ).closest( '.m365-login__divider' ).toggleClass( 'is-hidden', ! val );
} ).trigger( 'input' );
$( '[data-preview="show-icon"], #m365-icon-url' ).on( 'change input', updateIcon );
$( '[data-preview="radius"]' ).on( 'input change', function () {
setVar( 'radius', $( this ).val() + 'px' );
$( '#m365-radius-value' ).text( $( this ).val() + ' px' );
} );
$( '.m365-color' ).wpColorPicker( {
change: function ( event, ui ) {
var key = $( event.target ).data( 'preview' );
var color = ui.color.toString();
setVar( key.replace( '_', '-' ), color );
},
clear: function ( event ) {
var $input = $( event.target ).closest( '.wp-picker-container' ).find( '.m365-color' );
setVar( $input.data( 'preview' ).replace( '_', '-' ), $input.data( 'default-color' ) );
}
} );
$( '.m365-preset' ).on( 'click', function () {
var preset = $( this ).data( 'preset' );
if ( ! preset ) {
return;
}
$.each( preset, function ( key, value ) {
$( '#m365-button_' + key ).wpColorPicker( 'color', value );
} );
} );
/* ---------------- Media library ---------------- */
var frame;
$( '#m365-icon-choose' ).on( 'click', function ( e ) {
e.preventDefault();
if ( ! window.wp || ! wp.media ) {
return;
}
if ( ! frame ) {
frame = wp.media( {
title: i18n.chooseIcon || '',
button: { text: i18n.useIcon || '' },
library: { type: 'image' },
multiple: false
} );
frame.on( 'select', function () {
var attachment = frame.state().get( 'selection' ).first().toJSON();
var url = attachment.url;
if ( attachment.sizes && attachment.sizes.thumbnail && attachment.mime !== 'image/svg+xml' ) {
url = attachment.sizes.thumbnail.url;
}
$( '#m365-icon-url' ).val( url ).trigger( 'input' );
} );
}
frame.open();
} );
$( '#m365-icon-reset' ).on( 'click', function ( e ) {
e.preventDefault();
$( '#m365-icon-url' ).val( '' ).trigger( 'input' );
} );
/* ---------------- Secret visibility ---------------- */
$( '.m365-toggle-secret' ).on( 'click', function () {
var $input = $( '#m365-client-secret' );
var show = 'password' === $input.attr( 'type' );
$input.attr( 'type', show ? 'text' : 'password' );
$( this ).find( '.dashicons' ).toggleClass( 'dashicons-visibility', ! show ).toggleClass( 'dashicons-hidden', show );
} );
/* ---------------- Copy redirect URI ---------------- */
$( '.m365-copy__button' ).on( 'click', function () {
var $btn = $( this );
var text = $( '#' + $btn.data( 'copy' ) ).text();
var done = function () {
$btn.text( i18n.copied || 'Copied!' );
window.setTimeout( function () {
$btn.text( i18n.copy || 'Copy' );
}, 1500 );
};
if ( navigator.clipboard && navigator.clipboard.writeText ) {
navigator.clipboard.writeText( text ).then( done );
} else {
var $tmp = $( '<textarea>' ).val( text ).appendTo( 'body' ).select();
try {
document.execCommand( 'copy' );
} catch ( e ) {}
$tmp.remove();
done();
}
} );
/* ---------------- Test tenant ---------------- */
$( '#m365-test' ).on( 'click', function () {
var $btn = $( this );
var $out = $( '#m365-test-result' );
var label = $btn.text();
$btn.prop( 'disabled', true ).text( i18n.testing || '…' );
$out.removeClass( 'is-success is-error' ).prop( 'hidden', true ).empty();
$.post( cfg.ajaxUrl, {
action: cfg.action,
nonce: cfg.nonce,
tenant: $( '#m365-tenant' ).val()
} ).done( function ( res ) {
if ( res && res.success ) {
$out.addClass( 'is-success' ).text( res.data.message ).append( $( '<code>' ).text( res.data.issuer ) );
} else {
$out.addClass( 'is-error' ).text( ( res && res.data && res.data.message ) || i18n.testFailed || '' );
}
} ).fail( function () {
$out.addClass( 'is-error' ).text( i18n.testFailed || '' );
} ).always( function () {
$btn.prop( 'disabled', false ).text( label );
$out.prop( 'hidden', false );
} );
} );
} );
}( jQuery ) );

20
assets/js/login.js Normal file
View file

@ -0,0 +1,20 @@
/* M365 Login moves the button block directly below the login form. */
( function () {
'use strict';
function place() {
var block = document.getElementById( 'm365-login-block' );
var form = document.getElementById( 'loginform' );
if ( ! block || ! form || ! form.parentNode ) {
return;
}
form.parentNode.insertBefore( block, form.nextSibling );
document.body.classList.add( 'm365-login-attached' );
}
if ( 'loading' === document.readyState ) {
document.addEventListener( 'DOMContentLoaded', place );
} else {
place();
}
}() );

27
bin/build-zip.sh Executable file
View file

@ -0,0 +1,27 @@
#!/usr/bin/env bash
# Builds build/m365-login.zip the folder inside the archive is named after the
# WordPress.org slug (m365-login), regardless of the repository name.
set -euo pipefail
ROOT="$(cd "$(dirname "${BASH_SOURCE[0]}")/.." && pwd)"
SLUG="m365-login"
BUILD="$ROOT/build"
STAGE="$BUILD/$SLUG"
rm -rf "$BUILD"
mkdir -p "$STAGE"
# rsync honours .distignore-style excludes.
rsync -a --delete \
--exclude-from="$ROOT/.distignore" \
--exclude 'build' \
"$ROOT/" "$STAGE/"
(
cd "$BUILD"
rm -f "$SLUG.zip"
zip -rq "$SLUG.zip" "$SLUG"
)
echo "Created $BUILD/$SLUG.zip"
unzip -l "$BUILD/$SLUG.zip" | tail -n +4 | head -n -2 | awk '{print $4}'

103
bin/compile-mo.py Normal file
View file

@ -0,0 +1,103 @@
#!/usr/bin/env python3
"""Compiles every languages/*.po into a binary .mo (no gettext tools required).
Usage: python3 bin/compile-mo.py
"""
import ast
import glob
import os
import struct
ROOT = os.path.dirname(os.path.dirname(os.path.abspath(__file__)))
def parse_po(path):
messages = {}
ctx = msgid = msgstr = None
plural = None
plurals = {}
section = None
def flush():
if msgid is None:
return
key = msgid if ctx is None else ctx + "\x04" + msgid
if plural is not None:
key = key + "\x00" + plural
value = "\x00".join(plurals[i] for i in sorted(plurals))
else:
value = msgstr or ""
if msgid == "" or value:
messages[key] = value
for raw in open(path, encoding="utf-8"):
line = raw.strip()
if not line or line.startswith("#"):
continue
if line.startswith("msgctxt "):
flush()
ctx, msgid, msgstr, plural, plurals = ast.literal_eval(line[8:]), None, None, None, {}
section = "ctx"
elif line.startswith("msgid_plural "):
plural = ast.literal_eval(line[13:])
section = "plural"
elif line.startswith("msgid "):
if section != "ctx":
flush()
ctx, msgstr, plural, plurals = None, None, None, {}
msgid = ast.literal_eval(line[6:])
section = "id"
elif line.startswith("msgstr["):
idx = int(line[7:line.index("]")])
plurals[idx] = ast.literal_eval(line[line.index("]") + 1:].strip())
section = ("pl", idx)
elif line.startswith("msgstr "):
msgstr = ast.literal_eval(line[7:])
section = "str"
elif line.startswith('"'):
chunk = ast.literal_eval(line)
if section == "ctx":
ctx += chunk
elif section == "id":
msgid += chunk
elif section == "plural":
plural += chunk
elif section == "str":
msgstr += chunk
elif isinstance(section, tuple):
plurals[section[1]] += chunk
flush()
return messages
def write_mo(messages, path):
keys = sorted(messages)
ids = b""
strs = b""
offsets = []
for k in keys:
kb = k.encode("utf-8")
vb = messages[k].encode("utf-8")
offsets.append((len(ids), len(kb), len(strs), len(vb)))
ids += kb + b"\x00"
strs += vb + b"\x00"
n = len(keys)
keystart = 7 * 4 + 16 * n
valuestart = keystart + len(ids)
koffsets = []
voffsets = []
for o1, l1, o2, l2 in offsets:
koffsets += [l1, o1 + keystart]
voffsets += [l2, o2 + valuestart]
output = struct.pack("Iiiiiii", 0x950412DE, 0, n, 7 * 4, 7 * 4 + n * 8, 0, 0)
output += struct.pack("%di" % len(koffsets), *koffsets)
output += struct.pack("%di" % len(voffsets), *voffsets)
output += ids + strs
open(path, "wb").write(output)
for po in sorted(glob.glob(os.path.join(ROOT, "languages", "*.po"))):
mo = po[:-3] + ".mo"
messages = parse_po(po)
write_mo(messages, mo)
print("Compiled %s (%d entries)" % (os.path.relpath(mo, ROOT), len(messages) - 1))

94
bin/make-pot.py Normal file
View file

@ -0,0 +1,94 @@
#!/usr/bin/env python3
"""Minimal POT generator for this plugin (fallback when WP-CLI is unavailable).
Usage: python3 bin/make-pot.py
Prefer `wp i18n make-pot . languages/m365-login.pot` when WP-CLI is installed.
"""
import os
import re
import sys
from collections import OrderedDict
ROOT = os.path.dirname(os.path.dirname(os.path.abspath(__file__)))
DOMAIN = "m365-login"
FUNCS = r"(?:__|_e|esc_html__|esc_html_e|esc_attr__|esc_attr_e|_x|_ex|esc_html_x|esc_attr_x|_n|_nx)"
STR = r"(?:'((?:[^'\\]|\\.)*)'|\"((?:[^\"\\]|\\.)*)\")"
PATTERN = re.compile(FUNCS + r"\s*\(\s*" + STR + r"(?:\s*,\s*" + STR + r")?(?:\s*,\s*" + STR + r")?\s*[,)]", re.S)
COMMENT = re.compile(r"/\*\s*translators:\s*(.*?)\*/", re.S)
def unescape(s):
return s.replace("\\'", "'").replace('\\"', '"').replace("\\\\", "\\")
def po_escape(s):
return s.replace("\\", "\\\\").replace('"', '\\"').replace("\n", "\\n")
entries = OrderedDict()
for dirpath, dirnames, filenames in os.walk(ROOT):
dirnames[:] = [d for d in dirnames if d not in (".git", "vendor", "node_modules", "build", "bin", "docs", ".github", ".wordpress-org")]
for fn in sorted(filenames):
if not fn.endswith(".php"):
continue
path = os.path.join(dirpath, fn)
rel = os.path.relpath(path, ROOT)
src = open(path, encoding="utf-8").read()
for m in PATTERN.finditer(src):
func = m.group(0).split("(")[0].strip()
msgid = unescape(m.group(1) if m.group(1) is not None else m.group(2))
second = m.group(3) if m.group(3) is not None else m.group(4)
third = m.group(5) if m.group(5) is not None else m.group(6)
context = None
plural = None
if func in ("_x", "_ex", "esc_html_x", "esc_attr_x"):
context = unescape(second) if second is not None else None
elif func in ("_n",):
plural = unescape(second) if second is not None else None
elif func == "_nx":
plural = unescape(second) if second is not None else None
context = unescape(third) if third is not None else None
line = src.count("\n", 0, m.start()) + 1
before = src[max(0, m.start() - 400):m.start()]
cm = COMMENT.findall(before)
comment = " ".join(cm[-1].split()) if cm else None
key = (context, msgid, plural)
e = entries.setdefault(key, {"refs": [], "comment": None})
e["refs"].append("%s:%d" % (rel, line))
if comment:
e["comment"] = comment
header = '''# Copyright (C) 2026 friloo
# This file is distributed under the GPL-2.0-or-later.
msgid ""
msgstr ""
"Project-Id-Version: M365 Login 1.0.0\\n"
"Report-Msgid-Bugs-To: https://github.com/friloo/wp-m365-login/issues\\n"
"MIME-Version: 1.0\\n"
"Content-Type: text/plain; charset=UTF-8\\n"
"Content-Transfer-Encoding: 8bit\\n"
"POT-Creation-Date: 2026-09-22T00:00:00+00:00\\n"
"PO-Revision-Date: YEAR-MO-DA HO:MI+ZONE\\n"
"Last-Translator: FULL NAME <EMAIL@ADDRESS>\\n"
"Language-Team: LANGUAGE <LL@li.org>\\n"
"X-Generator: bin/make-pot.py\\n"
"X-Domain: m365-login\\n"
'''
out = [header]
for (context, msgid, plural), e in entries.items():
if e["comment"]:
out.append("#. translators: %s\n" % e["comment"])
out.append("#: %s\n" % " ".join(e["refs"]))
if context:
out.append('msgctxt "%s"\n' % po_escape(context))
out.append('msgid "%s"\n' % po_escape(msgid))
if plural:
out.append('msgid_plural "%s"\n' % po_escape(plural))
out.append('msgstr[0] ""\nmsgstr[1] ""\n\n')
else:
out.append('msgstr ""\n\n')
dest = os.path.join(ROOT, "languages", DOMAIN + ".pot")
open(dest, "w", encoding="utf-8").write("".join(out))
print("Wrote %s (%d strings)" % (os.path.relpath(dest, ROOT), len(entries)))

29
composer.json Normal file
View file

@ -0,0 +1,29 @@
{
"name": "friloo/m365-login",
"description": "Sign in to WordPress with Microsoft 365 / Entra ID (OpenID Connect with PKCE). Existing users are matched by e-mail address.",
"type": "wordpress-plugin",
"license": "GPL-2.0-or-later",
"homepage": "https://github.com/friloo/wp-m365-login",
"require": {
"php": ">=7.4",
"ext-openssl": "*",
"ext-json": "*"
},
"require-dev": {
"dealerdirect/phpcodesniffer-composer-installer": "^1.0",
"wp-coding-standards/wpcs": "^3.1",
"phpcompatibility/phpcompatibility-wp": "^2.1"
},
"scripts": {
"lint": "find . -path ./vendor -prune -o -name '*.php' -print0 | xargs -0 -n1 php -l",
"phpcs": "phpcs",
"phpcbf": "phpcbf",
"zip": "bash bin/build-zip.sh"
},
"config": {
"allow-plugins": {
"dealerdirect/phpcodesniffer-composer-installer": true
},
"sort-packages": true
}
}

View file

@ -0,0 +1,43 @@
# Checkliste: Einreichung im WordPress-Plugin-Verzeichnis
Das Plugin ist so aufgebaut, dass es die [Richtlinien des Plugin-Verzeichnisses](https://developer.wordpress.org/plugins/wordpress-org/detailed-plugin-guidelines/)
erfüllt. Vor der Einreichung unter <https://wordpress.org/plugins/developers/add/> bitte die folgenden Punkte durchgehen.
## 1. Vor dem Upload prüfen
- [ ] `Tested up to:` in `readme.txt` auf die **aktuelle WordPress-Version** setzen (das Review-Team lehnt veraltete Werte ab).
- [ ] `Stable tag:` in `readme.txt` und `Version:` in `m365-login.php` sowie `M365_LOGIN_VERSION` sind identisch.
- [ ] `Contributors:` in `readme.txt` enthält deinen **WordPress.org-Benutzernamen** (aktuell `friloo`).
- [ ] Übersetzungsdateien aktualisiert: `wp i18n make-pot . languages/m365-login.pot` (WP-CLI) oder `python3 bin/make-pot.py`, danach `python3 bin/compile-mo.py`.
- [ ] `bash bin/build-zip.sh` ausführen und `build/m365-login.zip` hochladen (Ordner im ZIP heißt `m365-login`, nicht `wp-m365-login`).
- [ ] Lokal den **Plugin Check** laufen lassen (Plugin „Plugin Check (PCP)“ installieren oder auf das CI-Ergebnis achten) er muss ohne Fehler durchlaufen.
## 2. Namens- und Marken-Regeln
- Slugs dürfen nicht mit `wp-` oder mit Markennamen wie `microsoft-` beginnen; deshalb heißt der Slug `m365-login` und der Plugin-Name „M365 Login“.
Sollte das Review-Team dennoch einen anderen Slug zuweisen (z. B. wegen Trademark-Bedenken bei „M365“), müssen **Text Domain**, Ordnername und `readme.txt` angepasst werden Suche nach `m365-login` im Repo.
- Der Name darf nicht suggerieren, dass das Plugin von Microsoft stammt. Beschreibungstexte verwenden deshalb Formulierungen wie „sign in with Microsoft“, nicht „official Microsoft plugin“.
- Das Microsoft-Logo ist eingebettet, damit der Button so aussieht, wie Nutzer es erwarten. Microsoft erlaubt die Verwendung des Logos für „Sign in with Microsoft“-Buttons gemäß den [Branding-Richtlinien](https://learn.microsoft.com/entra/identity-platform/howto-add-branding-in-apps). Ein Reviewer könnte trotzdem nachfragen der Hinweis auf diese Richtlinie reicht in der Regel.
## 3. Was bereits erfüllt ist
| Anforderung | Umsetzung |
| --- | --- |
| GPL-kompatible Lizenz | `LICENSE` (GPL-2.0), Header in `m365-login.php`, `readme.txt` |
| `readme.txt` im WP-Format | inkl. Pflichtabschnitt **External services** (Microsoft-Endpunkte, übertragene Daten, Links zu Nutzungsbedingungen/Datenschutz) |
| Keine externen Assets/CDNs | CSS/JS liegen im Plugin; einzige Netzwerkverbindungen gehen zu `login.microsoftonline.com` |
| Sanitizing / Escaping / Nonces | Settings API mit `sanitize_callback`, `esc_*` bei jeder Ausgabe, `check_ajax_referer` + `current_user_can` |
| Eindeutiges Präfix | `m365_login_` / `M365_Login_` für alle globalen Bezeichner |
| Kein Tracking, keine Telefon-nach-Hause-Funktion | |
| Saubere Deinstallation | `uninstall.php` entfernt Option, Transients und User-Meta (auch Multisite) |
| Keine minifizierten Dateien ohne Quelle | Alle Assets liegen unminifiziert vor |
| `Requires PHP` / `Requires at least` | 7.4 / 6.0 |
| Übersetzbar | Text Domain `m365-login`, `languages/m365-login.pot`, deutsche Übersetzung |
## 4. Nach der Freigabe
1. SVN-Zugang aus der Freigabe-Mail nutzen: `svn co https://plugins.svn.wordpress.org/m365-login`.
2. Inhalt von `build/m365-login/` nach `trunk/` kopieren, `assets/` aus `.wordpress-org/` befüllen (Icon, Banner, Screenshots).
3. `svn cp trunk tags/1.0.0` und committen.
4. Screenshots erstellen (siehe `== Screenshots ==` in `readme.txt`) und als `screenshot-1.png` … in `assets/` ablegen.
5. Optional: GitHub Action `10up/action-wordpress-plugin-deploy` einrichten, um Releases automatisch nach SVN zu spiegeln.

View file

@ -0,0 +1,460 @@
<?php
/**
* Admin settings screen.
*
* @package M365_Login
*/
defined( 'ABSPATH' ) || exit;
/**
* Registers and renders the settings page.
*/
class M365_Login_Admin {
const PAGE = 'm365-login';
const GROUP = 'm365_login';
const AJAX_TEST = 'm365_login_test_connection';
const NONCE_TEST = 'm365_login_test';
/**
* Settings.
*
* @var M365_Login_Settings
*/
private $settings;
/**
* Auth component (for endpoint URLs and discovery).
*
* @var M365_Login_Auth
*/
private $auth;
/**
* Screen hook suffix.
*
* @var string
*/
private $hook = '';
/**
* Constructor.
*
* @param M365_Login_Settings $settings Settings.
* @param M365_Login_Auth $auth Auth.
*/
public function __construct( M365_Login_Settings $settings, M365_Login_Auth $auth ) {
$this->settings = $settings;
$this->auth = $auth;
add_action( 'admin_menu', array( $this, 'menu' ) );
add_action( 'admin_init', array( $this, 'register' ) );
add_action( 'admin_enqueue_scripts', array( $this, 'enqueue' ) );
add_action( 'wp_ajax_' . self::AJAX_TEST, array( $this, 'ajax_test_connection' ) );
add_action( 'admin_notices', array( $this, 'setup_notice' ) );
}
/**
* Adds the menu entry under Settings.
*/
public function menu() {
$this->hook = add_options_page(
__( 'M365 Login', 'm365-login' ),
__( 'M365 Login', 'm365-login' ),
'manage_options',
self::PAGE,
array( $this, 'render' )
);
}
/**
* Registers the option with the Settings API.
*/
public function register() {
register_setting(
self::GROUP,
M365_LOGIN_OPTION,
array(
'type' => 'array',
'sanitize_callback' => array( $this->settings, 'sanitize' ),
'default' => $this->settings->defaults(),
)
);
}
/**
* Nudges administrators to finish the setup.
*/
public function setup_notice() {
if ( $this->settings->is_configured() || ! current_user_can( 'manage_options' ) ) {
return;
}
$screen = get_current_screen();
if ( $screen && $this->hook === $screen->id ) {
return;
}
if ( ! $screen || ! in_array( $screen->id, array( 'plugins', 'dashboard' ), true ) ) {
return;
}
printf(
'<div class="notice notice-info is-dismissible"><p>%s <a href="%s">%s</a></p></div>',
esc_html__( 'M365 Login is active but not connected to Microsoft Entra ID yet.', 'm365-login' ),
esc_url( admin_url( 'options-general.php?page=' . self::PAGE ) ),
esc_html__( 'Open the settings', 'm365-login' )
);
}
/**
* Loads assets on our screen only.
*
* @param string $hook Current screen hook.
*/
public function enqueue( $hook ) {
if ( $hook !== $this->hook ) {
return;
}
wp_enqueue_media();
wp_enqueue_style( 'wp-color-picker' );
wp_enqueue_style( 'm365-login-admin', M365_LOGIN_URL . 'assets/css/admin.css', array( 'wp-color-picker' ), M365_LOGIN_VERSION );
wp_enqueue_script( 'm365-login-admin', M365_LOGIN_URL . 'assets/js/admin.js', array( 'jquery', 'wp-color-picker' ), M365_LOGIN_VERSION, true );
wp_localize_script(
'm365-login-admin',
'm365LoginAdmin',
array(
'ajaxUrl' => admin_url( 'admin-ajax.php' ),
'nonce' => wp_create_nonce( self::NONCE_TEST ),
'action' => self::AJAX_TEST,
'defaultLogo' => M365_Login_Button::microsoft_logo(),
'i18n' => array(
'chooseIcon' => __( 'Choose button icon', 'm365-login' ),
'useIcon' => __( 'Use this icon', 'm365-login' ),
'copied' => __( 'Copied!', 'm365-login' ),
'copy' => __( 'Copy', 'm365-login' ),
'testing' => __( 'Testing…', 'm365-login' ),
'testFailed' => __( 'The tenant could not be reached. Check the tenant ID and the servers outgoing connections.', 'm365-login' ),
),
)
);
}
/**
* AJAX: fetch the OpenID configuration for the tenant typed into the form.
*/
public function ajax_test_connection() {
check_ajax_referer( self::NONCE_TEST, 'nonce' );
if ( ! current_user_can( 'manage_options' ) ) {
wp_send_json_error( array( 'message' => __( 'You are not allowed to do this.', 'm365-login' ) ), 403 );
}
$tenant = isset( $_POST['tenant'] ) ? strtolower( sanitize_text_field( wp_unslash( $_POST['tenant'] ) ) ) : '';
if ( '' === $tenant || ! M365_Login_Settings::is_valid_tenant( $tenant ) ) {
wp_send_json_error( array( 'message' => __( 'Please enter a valid tenant ID first.', 'm365-login' ) ) );
}
$url = 'https://login.microsoftonline.com/' . rawurlencode( $tenant ) . '/v2.0/.well-known/openid-configuration';
$response = wp_remote_get( $url, array( 'timeout' => M365_Login_Auth::HTTP_TIMEOUT ) );
if ( is_wp_error( $response ) ) {
wp_send_json_error( array( 'message' => $response->get_error_message() ) );
}
$code = (int) wp_remote_retrieve_response_code( $response );
$body = json_decode( wp_remote_retrieve_body( $response ), true );
if ( 200 !== $code || ! is_array( $body ) || empty( $body['issuer'] ) ) {
wp_send_json_error(
array(
/* translators: %d: HTTP status code */
'message' => sprintf( __( 'Microsoft answered with HTTP %d. Is the tenant ID correct?', 'm365-login' ), $code ),
)
);
}
wp_send_json_success(
array(
'issuer' => esc_url_raw( $body['issuer'] ),
'endpoint' => isset( $body['authorization_endpoint'] ) ? esc_url_raw( $body['authorization_endpoint'] ) : '',
'message' => __( 'Tenant reachable. The OpenID configuration was loaded successfully.', 'm365-login' ),
)
);
}
/**
* Renders the settings screen.
*/
public function render() {
if ( ! current_user_can( 'manage_options' ) ) {
wp_die( esc_html__( 'You are not allowed to access this page.', 'm365-login' ) );
}
$s = $this->settings->all();
$configured = $this->settings->is_configured();
$has_secret = '' !== $this->settings->client_secret();
$option = M365_LOGIN_OPTION;
$field = function ( $key ) use ( $option ) {
return esc_attr( $option . '[' . $key . ']' );
};
?>
<div class="wrap m365-admin">
<header class="m365-admin__header">
<div class="m365-admin__brand">
<span class="m365-admin__logo"><?php echo M365_Login_Button::microsoft_logo(); // phpcs:ignore WordPress.Security.EscapeOutput.OutputNotEscaped -- static SVG. ?></span>
<div>
<h1><?php esc_html_e( 'M365 Login', 'm365-login' ); ?></h1>
<p><?php esc_html_e( 'Let existing users sign in with their Microsoft 365 / Entra ID account.', 'm365-login' ); ?></p>
</div>
</div>
<span class="m365-admin__status <?php echo $configured ? 'is-ok' : 'is-pending'; ?>">
<span class="m365-admin__status-dot"></span>
<?php echo $configured ? esc_html__( 'Connected', 'm365-login' ) : esc_html__( 'Setup incomplete', 'm365-login' ); ?>
</span>
</header>
<form method="post" action="options.php" class="m365-admin__form" novalidate>
<?php settings_fields( self::GROUP ); ?>
<nav class="m365-admin__tabs" role="tablist">
<button type="button" class="m365-admin__tab is-active" role="tab" data-tab="connection" aria-selected="true"><?php esc_html_e( 'Connection', 'm365-login' ); ?></button>
<button type="button" class="m365-admin__tab" role="tab" data-tab="button" aria-selected="false"><?php esc_html_e( 'Button', 'm365-login' ); ?></button>
<button type="button" class="m365-admin__tab" role="tab" data-tab="security" aria-selected="false"><?php esc_html_e( 'Security', 'm365-login' ); ?></button>
</nav>
<div class="m365-admin__layout">
<div class="m365-admin__main">
<!-- Connection -->
<section class="m365-admin__panel is-active" data-panel="connection">
<div class="m365-card">
<h2 class="m365-card__title"><?php esc_html_e( 'Microsoft Entra ID app registration', 'm365-login' ); ?></h2>
<p class="m365-card__intro"><?php esc_html_e( 'Enter the values from your app registration in the Microsoft Entra admin center.', 'm365-login' ); ?></p>
<div class="m365-field">
<label for="m365-tenant"><?php esc_html_e( 'Directory (tenant) ID', 'm365-login' ); ?></label>
<div class="m365-field__row">
<input type="text" id="m365-tenant" name="<?php echo $field( 'tenant_id' ); // phpcs:ignore WordPress.Security.EscapeOutput.OutputNotEscaped ?>" value="<?php echo esc_attr( $s['tenant_id'] ); ?>" class="regular-text code" placeholder="00000000-0000-0000-0000-000000000000" autocomplete="off" spellcheck="false" />
<button type="button" class="button" id="m365-test"><?php esc_html_e( 'Test tenant', 'm365-login' ); ?></button>
</div>
<p class="description"><?php esc_html_e( 'Recommended: the GUID of your tenant. Only sign-ins from this tenant are accepted. "organizations" allows any work or school account.', 'm365-login' ); ?></p>
<div id="m365-test-result" class="m365-inline-result" hidden></div>
</div>
<div class="m365-field">
<label for="m365-client-id"><?php esc_html_e( 'Application (client) ID', 'm365-login' ); ?></label>
<input type="text" id="m365-client-id" name="<?php echo $field( 'client_id' ); // phpcs:ignore WordPress.Security.EscapeOutput.OutputNotEscaped ?>" value="<?php echo esc_attr( $s['client_id'] ); ?>" class="regular-text code" placeholder="00000000-0000-0000-0000-000000000000" autocomplete="off" spellcheck="false" />
</div>
<div class="m365-field">
<label for="m365-client-secret"><?php esc_html_e( 'Client secret', 'm365-login' ); ?></label>
<div class="m365-field__row">
<input type="password" id="m365-client-secret" name="<?php echo $field( 'client_secret' ); // phpcs:ignore WordPress.Security.EscapeOutput.OutputNotEscaped ?>" value="" class="regular-text code" autocomplete="new-password" placeholder="<?php echo $has_secret ? esc_attr__( '•••••••••••• (stored, leave empty to keep)', 'm365-login' ) : esc_attr__( 'Paste the secret value', 'm365-login' ); ?>" />
<button type="button" class="button m365-toggle-secret" aria-label="<?php esc_attr_e( 'Show secret', 'm365-login' ); ?>"><span class="dashicons dashicons-visibility"></span></button>
</div>
<?php if ( $has_secret ) : ?>
<label class="m365-check m365-check--inline">
<input type="checkbox" name="<?php echo $field( 'client_secret_clear' ); // phpcs:ignore WordPress.Security.EscapeOutput.OutputNotEscaped ?>" value="1" />
<?php esc_html_e( 'Remove the stored secret', 'm365-login' ); ?>
</label>
<?php endif; ?>
<p class="description"><?php esc_html_e( 'Stored encrypted (AES-256-GCM, key derived from your WordPress salts) and never displayed again. Client secrets expire note the expiry date in Entra ID.', 'm365-login' ); ?></p>
</div>
<div class="m365-field">
<label for="m365-prompt"><?php esc_html_e( 'Account prompt', 'm365-login' ); ?></label>
<select id="m365-prompt" name="<?php echo $field( 'prompt' ); // phpcs:ignore WordPress.Security.EscapeOutput.OutputNotEscaped ?>">
<option value="select_account" <?php selected( $s['prompt'], 'select_account' ); ?>><?php esc_html_e( 'Always let the user pick an account (recommended)', 'm365-login' ); ?></option>
<option value="none" <?php selected( $s['prompt'], 'none' ); ?>><?php esc_html_e( 'Use the current Microsoft session if available', 'm365-login' ); ?></option>
<option value="login" <?php selected( $s['prompt'], 'login' ); ?>><?php esc_html_e( 'Always require re-entering credentials', 'm365-login' ); ?></option>
</select>
</div>
</div>
</section>
<!-- Button -->
<section class="m365-admin__panel" data-panel="button">
<div class="m365-card">
<h2 class="m365-card__title"><?php esc_html_e( 'Appearance', 'm365-login' ); ?></h2>
<div class="m365-preview">
<span class="m365-preview__label"><?php esc_html_e( 'Live preview', 'm365-login' ); ?></span>
<div class="m365-preview__stage">
<div class="m365-login m365-login--preview" id="m365-preview" style="<?php echo esc_attr( str_replace( array( '.m365-login{', '}' ), '', M365_Login::instance()->button->css_variables() ) ); ?>">
<div class="m365-login__divider"><span id="m365-preview-divider"><?php echo esc_html( $s['divider_text'] ); ?></span></div>
<a class="m365-login__button" href="#" onclick="return false;" id="m365-preview-button">
<span id="m365-preview-icon"><?php echo M365_Login_Button::microsoft_logo(); // phpcs:ignore WordPress.Security.EscapeOutput.OutputNotEscaped -- static SVG. ?></span>
<span class="m365-login__label" id="m365-preview-text"><?php echo esc_html( $s['button_text'] ); ?></span>
</a>
</div>
</div>
</div>
<div class="m365-grid">
<div class="m365-field">
<label for="m365-button-text"><?php esc_html_e( 'Button text', 'm365-login' ); ?></label>
<input type="text" id="m365-button-text" name="<?php echo $field( 'button_text' ); // phpcs:ignore WordPress.Security.EscapeOutput.OutputNotEscaped ?>" value="<?php echo esc_attr( $s['button_text'] ); ?>" class="regular-text" maxlength="80" data-preview="text" />
</div>
<div class="m365-field">
<label for="m365-divider-text"><?php esc_html_e( 'Divider text', 'm365-login' ); ?></label>
<input type="text" id="m365-divider-text" name="<?php echo $field( 'divider_text' ); // phpcs:ignore WordPress.Security.EscapeOutput.OutputNotEscaped ?>" value="<?php echo esc_attr( $s['divider_text'] ); ?>" class="regular-text" maxlength="40" data-preview="divider" />
<p class="description"><?php esc_html_e( 'Leave empty to hide the divider line.', 'm365-login' ); ?></p>
</div>
</div>
<div class="m365-field">
<span class="m365-field__label"><?php esc_html_e( 'Icon', 'm365-login' ); ?></span>
<label class="m365-check">
<input type="checkbox" name="<?php echo $field( 'button_show_icon' ); // phpcs:ignore WordPress.Security.EscapeOutput.OutputNotEscaped ?>" value="1" <?php checked( $s['button_show_icon'] ); ?> data-preview="show-icon" />
<?php esc_html_e( 'Show an icon on the button', 'm365-login' ); ?>
</label>
<div class="m365-icon-picker">
<div class="m365-icon-picker__thumb" id="m365-icon-thumb">
<?php if ( '' !== $s['button_icon'] ) : ?>
<img src="<?php echo esc_url( $s['button_icon'] ); ?>" alt="" />
<?php else : ?>
<?php echo M365_Login_Button::microsoft_logo(); // phpcs:ignore WordPress.Security.EscapeOutput.OutputNotEscaped -- static SVG. ?>
<?php endif; ?>
</div>
<div class="m365-icon-picker__controls">
<input type="url" id="m365-icon-url" name="<?php echo $field( 'button_icon' ); // phpcs:ignore WordPress.Security.EscapeOutput.OutputNotEscaped ?>" value="<?php echo esc_url( $s['button_icon'] ); ?>" class="regular-text code" placeholder="<?php esc_attr_e( 'Default: Microsoft logo', 'm365-login' ); ?>" data-preview="icon" />
<div class="m365-field__row">
<button type="button" class="button" id="m365-icon-choose"><?php esc_html_e( 'Choose from media library', 'm365-login' ); ?></button>
<button type="button" class="button-link m365-link-danger" id="m365-icon-reset"><?php esc_html_e( 'Use Microsoft logo', 'm365-login' ); ?></button>
</div>
<p class="description"><?php esc_html_e( 'PNG, SVG, JPG or WebP. Square images (e.g. 64×64 px) work best.', 'm365-login' ); ?></p>
</div>
</div>
</div>
<div class="m365-grid m365-grid--4">
<?php
$colors = array(
'button_bg' => __( 'Background', 'm365-login' ),
'button_bg_hover' => __( 'Background (hover)', 'm365-login' ),
'button_color' => __( 'Text colour', 'm365-login' ),
'button_border' => __( 'Border', 'm365-login' ),
);
foreach ( $colors as $key => $label ) :
?>
<div class="m365-field">
<label for="m365-<?php echo esc_attr( $key ); ?>"><?php echo esc_html( $label ); ?></label>
<input type="text" id="m365-<?php echo esc_attr( $key ); ?>" name="<?php echo $field( $key ); // phpcs:ignore WordPress.Security.EscapeOutput.OutputNotEscaped ?>" value="<?php echo esc_attr( $s[ $key ] ); ?>" class="m365-color" data-default-color="<?php echo esc_attr( $this->settings->defaults()[ $key ] ); ?>" data-preview="<?php echo esc_attr( str_replace( 'button_', '', $key ) ); ?>" />
</div>
<?php endforeach; ?>
</div>
<div class="m365-grid">
<div class="m365-field">
<label for="m365-radius"><?php esc_html_e( 'Corner radius', 'm365-login' ); ?> <span class="m365-range-value" id="m365-radius-value"><?php echo esc_html( $s['button_radius'] ); ?> px</span></label>
<input type="range" id="m365-radius" name="<?php echo $field( 'button_radius' ); // phpcs:ignore WordPress.Security.EscapeOutput.OutputNotEscaped ?>" value="<?php echo esc_attr( $s['button_radius'] ); ?>" min="0" max="50" step="1" data-preview="radius" />
</div>
<div class="m365-field">
<label for="m365-position"><?php esc_html_e( 'Position on the login page', 'm365-login' ); ?></label>
<select id="m365-position" name="<?php echo $field( 'button_position' ); // phpcs:ignore WordPress.Security.EscapeOutput.OutputNotEscaped ?>">
<option value="below" <?php selected( $s['button_position'], 'below' ); ?>><?php esc_html_e( 'Below the login form', 'm365-login' ); ?></option>
<option value="above" <?php selected( $s['button_position'], 'above' ); ?>><?php esc_html_e( 'Above the login form', 'm365-login' ); ?></option>
</select>
</div>
</div>
<div class="m365-presets">
<span class="m365-field__label"><?php esc_html_e( 'Quick presets', 'm365-login' ); ?></span>
<button type="button" class="m365-preset" data-preset='{"bg":"#2f2f2f","bg_hover":"#1a1a1a","color":"#ffffff","border":"#2f2f2f"}'><span style="background:#2f2f2f"></span><?php esc_html_e( 'Microsoft dark', 'm365-login' ); ?></button>
<button type="button" class="m365-preset" data-preset='{"bg":"#ffffff","bg_hover":"#f3f3f3","color":"#5e5e5e","border":"#8c8c8c"}'><span style="background:#ffffff;border-color:#8c8c8c"></span><?php esc_html_e( 'Microsoft light', 'm365-login' ); ?></button>
<button type="button" class="m365-preset" data-preset='{"bg":"#0078d4","bg_hover":"#106ebe","color":"#ffffff","border":"#0078d4"}'><span style="background:#0078d4"></span><?php esc_html_e( 'Azure blue', 'm365-login' ); ?></button>
<button type="button" class="m365-preset" data-preset='{"bg":"#2271b1","bg_hover":"#135e96","color":"#ffffff","border":"#2271b1"}'><span style="background:#2271b1"></span><?php esc_html_e( 'WordPress blue', 'm365-login' ); ?></button>
</div>
</div>
</section>
<!-- Security -->
<section class="m365-admin__panel" data-panel="security">
<div class="m365-card">
<h2 class="m365-card__title"><?php esc_html_e( 'User matching & hardening', 'm365-login' ); ?></h2>
<p class="m365-card__intro"><?php esc_html_e( 'Users are never created automatically. A Microsoft sign-in only succeeds when a WordPress user with the same e-mail address already exists.', 'm365-login' ); ?></p>
<label class="m365-check m365-check--block">
<input type="checkbox" name="<?php echo $field( 'bind_oid' ); // phpcs:ignore WordPress.Security.EscapeOutput.OutputNotEscaped ?>" value="1" <?php checked( $s['bind_oid'] ); ?> />
<span>
<strong><?php esc_html_e( 'Bind WordPress accounts to the Microsoft object ID', 'm365-login' ); ?></strong>
<em><?php esc_html_e( 'On first sign-in the immutable Microsoft object ID is stored with the user. Later sign-ins with the same e-mail but a different Microsoft identity are rejected. Strongly recommended.', 'm365-login' ); ?></em>
</span>
</label>
<label class="m365-check m365-check--block">
<input type="checkbox" name="<?php echo $field( 'upn_fallback' ); // phpcs:ignore WordPress.Security.EscapeOutput.OutputNotEscaped ?>" value="1" <?php checked( $s['upn_fallback'] ); ?> />
<span>
<strong><?php esc_html_e( 'Fall back to the user principal name (UPN)', 'm365-login' ); ?></strong>
<em><?php esc_html_e( 'If the token contains no "email" claim, use the UPN (e.g. jane@contoso.com) when it is a valid e-mail address. Usually required for work accounts.', 'm365-login' ); ?></em>
</span>
</label>
<label class="m365-check m365-check--block">
<input type="checkbox" name="<?php echo $field( 'remember_me' ); // phpcs:ignore WordPress.Security.EscapeOutput.OutputNotEscaped ?>" value="1" <?php checked( $s['remember_me'] ); ?> />
<span>
<strong><?php esc_html_e( 'Keep users signed in ("Remember me")', 'm365-login' ); ?></strong>
<em><?php esc_html_e( 'Issues a 14-day WordPress session instead of a browser session.', 'm365-login' ); ?></em>
</span>
</label>
<div class="m365-field">
<label for="m365-domains"><?php esc_html_e( 'Allowed e-mail domains (optional)', 'm365-login' ); ?></label>
<textarea id="m365-domains" name="<?php echo $field( 'allowed_domains' ); // phpcs:ignore WordPress.Security.EscapeOutput.OutputNotEscaped ?>" rows="3" class="large-text code" placeholder="contoso.com, contoso.de"><?php echo esc_textarea( $s['allowed_domains'] ); ?></textarea>
<p class="description"><?php esc_html_e( 'One or more domains separated by commas or new lines. Leave empty to allow any domain of your tenant.', 'm365-login' ); ?></p>
</div>
</div>
<div class="m365-card m365-card--muted">
<h2 class="m365-card__title"><?php esc_html_e( 'What the plugin does to keep sign-ins safe', 'm365-login' ); ?></h2>
<ul class="m365-list">
<li><?php esc_html_e( 'OpenID Connect authorization code flow with PKCE (S256) no tokens ever pass through the browser.', 'm365-login' ); ?></li>
<li><?php esc_html_e( 'Single-use state and nonce values bound to the browser via an HttpOnly cookie (CSRF and replay protection).', 'm365-login' ); ?></li>
<li><?php esc_html_e( 'ID token signature verified against Microsofts published signing keys; issuer, audience, tenant, expiry and nonce are checked.', 'm365-login' ); ?></li>
<li><?php esc_html_e( 'Client secret encrypted at rest; no accounts are created, no passwords are changed.', 'm365-login' ); ?></li>
</ul>
</div>
</section>
<div class="m365-admin__actions">
<?php submit_button( __( 'Save changes', 'm365-login' ), 'primary large', 'submit', false ); ?>
</div>
</div>
<aside class="m365-admin__sidebar">
<div class="m365-card m365-card--accent">
<h2 class="m365-card__title"><?php esc_html_e( 'Redirect URI', 'm365-login' ); ?></h2>
<p><?php esc_html_e( 'Register this URI in your app registration under Authentication → Web → Redirect URIs:', 'm365-login' ); ?></p>
<div class="m365-copy">
<code id="m365-redirect-uri"><?php echo esc_html( $this->settings->redirect_uri() ); ?></code>
<button type="button" class="button button-small m365-copy__button" data-copy="m365-redirect-uri"><?php esc_html_e( 'Copy', 'm365-login' ); ?></button>
</div>
<?php if ( ! $this->settings->uses_pretty_callback() ) : ?>
<p class="description"><?php esc_html_e( 'Plain permalinks are active, so the callback uses a query string. If you enable pretty permalinks later, the redirect URI changes and must be updated in Entra ID.', 'm365-login' ); ?></p>
<?php endif; ?>
<?php if ( ! is_ssl() && 'https' !== wp_parse_url( home_url(), PHP_URL_SCHEME ) ) : ?>
<p class="m365-warning"><?php esc_html_e( 'Your site does not use HTTPS. Microsoft only accepts http:// redirect URIs for localhost; production sites must use HTTPS.', 'm365-login' ); ?></p>
<?php endif; ?>
</div>
<div class="m365-card">
<h2 class="m365-card__title"><?php esc_html_e( 'Setup in 5 steps', 'm365-login' ); ?></h2>
<ol class="m365-steps">
<li><?php esc_html_e( 'Open the Microsoft Entra admin center → App registrations → New registration.', 'm365-login' ); ?></li>
<li><?php esc_html_e( 'Choose "Accounts in this organizational directory only", set the platform to Web and paste the redirect URI above.', 'm365-login' ); ?></li>
<li><?php esc_html_e( 'Copy the Application (client) ID and Directory (tenant) ID from the overview page.', 'm365-login' ); ?></li>
<li><?php esc_html_e( 'Under Certificates & secrets create a client secret and copy its value (not the ID).', 'm365-login' ); ?></li>
<li><?php esc_html_e( 'Under Token configuration add the optional claim "email" for ID tokens (recommended), then save this page.', 'm365-login' ); ?></li>
</ol>
<p class="description"><?php esc_html_e( 'Required API permission: openid, profile, email (delegated) granted by default.', 'm365-login' ); ?></p>
</div>
<div class="m365-card m365-card--muted">
<h2 class="m365-card__title"><?php esc_html_e( 'Shortcode', 'm365-login' ); ?></h2>
<p><?php esc_html_e( 'Place the button on a custom login page:', 'm365-login' ); ?></p>
<code>[m365_login_button redirect="/my-account/"]</code>
</div>
</aside>
</div>
</form>
</div>
<?php
}
}

View file

@ -0,0 +1,617 @@
<?php
/**
* OpenID Connect authorization code flow (with PKCE) against Microsoft Entra ID.
*
* @package M365_Login
*/
defined( 'ABSPATH' ) || exit;
/**
* Handles the login start, the callback and user matching.
*/
class M365_Login_Auth {
const ACTION_START = 'm365_login';
const CALLBACK_PATH = 'm365-login/callback';
const STATE_COOKIE = 'm365_login_state';
const STATE_TTL = 600; // 10 minutes.
const META_OID = '_m365_login_oid';
const META_LAST_LOGIN = '_m365_login_last_login';
const JWKS_CACHE_TTL = 12 * HOUR_IN_SECONDS;
const HTTP_TIMEOUT = 15;
/**
* Settings.
*
* @var M365_Login_Settings
*/
private $settings;
/**
* Constructor.
*
* @param M365_Login_Settings $settings Settings.
*/
public function __construct( M365_Login_Settings $settings ) {
$this->settings = $settings;
add_action( 'login_form_' . self::ACTION_START, array( $this, 'handle_start' ) );
add_action( 'init', array( $this, 'maybe_handle_callback' ), 5 );
add_filter( 'wp_login_errors', array( $this, 'login_errors' ), 10, 1 );
}
/* ------------------------------------------------------------------ */
/* Endpoints */
/* ------------------------------------------------------------------ */
/**
* Microsoft authority base URL for the configured tenant.
*
* @return string
*/
public function authority() {
return 'https://login.microsoftonline.com/' . rawurlencode( $this->settings->tenant() );
}
/**
* OpenID configuration document URL.
*
* @return string
*/
public function discovery_url() {
return $this->authority() . '/v2.0/.well-known/openid-configuration';
}
/**
* Authorization endpoint.
*
* @return string
*/
public function authorize_endpoint() {
return $this->authority() . '/oauth2/v2.0/authorize';
}
/**
* Token endpoint.
*
* @return string
*/
public function token_endpoint() {
return $this->authority() . '/oauth2/v2.0/token';
}
/**
* JWKS endpoint.
*
* @return string
*/
public function jwks_endpoint() {
return $this->authority() . '/discovery/v2.0/keys';
}
/**
* URL that starts the Microsoft login.
*
* @param string $redirect_to Optional destination after login.
* @return string
*/
public function start_url( $redirect_to = '' ) {
$args = array( 'action' => self::ACTION_START );
if ( '' !== $redirect_to ) {
$args['redirect_to'] = $redirect_to;
}
return add_query_arg( $args, wp_login_url() );
}
/* ------------------------------------------------------------------ */
/* Step 1: redirect to Microsoft */
/* ------------------------------------------------------------------ */
/**
* Builds the authorization request and redirects the browser.
*/
public function handle_start() {
if ( ! $this->settings->is_configured() ) {
$this->fail( 'not_configured' );
}
// phpcs:ignore WordPress.Security.NonceVerification.Recommended -- redirect_to is validated with wp_validate_redirect() before use.
$redirect_to = isset( $_GET['redirect_to'] ) ? wp_validate_redirect( esc_url_raw( wp_unslash( $_GET['redirect_to'] ) ), '' ) : '';
$state = M365_Login_JWT::b64url_encode( random_bytes( 32 ) );
$nonce = M365_Login_JWT::b64url_encode( random_bytes( 32 ) );
$code_verifier = M365_Login_JWT::b64url_encode( random_bytes( 64 ) );
$cookie_token = M365_Login_JWT::b64url_encode( random_bytes( 32 ) );
$code_challenge = M365_Login_JWT::b64url_encode( hash( 'sha256', $code_verifier, true ) );
// The transient is keyed by a hash of the state, so the raw state never hits the database.
set_transient(
$this->state_key( $state ),
array(
'nonce' => $nonce,
'verifier' => $code_verifier,
'cookie' => hash( 'sha256', $cookie_token ),
'redirect_to' => $redirect_to,
'created' => time(),
),
self::STATE_TTL
);
$this->set_state_cookie( $cookie_token );
$params = array(
'client_id' => $this->settings->get( 'client_id' ),
'response_type' => 'code',
'redirect_uri' => $this->settings->redirect_uri(),
'response_mode' => 'query',
'scope' => 'openid profile email',
'state' => $state,
'nonce' => $nonce,
'code_challenge' => $code_challenge,
'code_challenge_method' => 'S256',
);
$prompt = $this->settings->get( 'prompt' );
if ( in_array( $prompt, array( 'select_account', 'login' ), true ) ) {
$params['prompt'] = $prompt;
}
/**
* Filters the parameters sent to the Microsoft authorization endpoint.
*
* @param array $params Query parameters.
*/
$params = apply_filters( 'm365_login_authorize_params', $params );
nocache_headers();
wp_redirect( $this->authorize_endpoint() . '?' . http_build_query( $params, '', '&', PHP_QUERY_RFC3986 ) ); // phpcs:ignore WordPress.Security.SafeRedirect.wp_redirect_wp_redirect -- external IdP redirect by design.
exit;
}
/* ------------------------------------------------------------------ */
/* Step 2: callback */
/* ------------------------------------------------------------------ */
/**
* Detects a request to /m365-login/callback regardless of permalink settings.
*/
public function maybe_handle_callback() {
// phpcs:ignore WordPress.Security.NonceVerification.Recommended -- routing only; the OAuth state is verified in handle_callback().
$query_form = isset( $_GET['m365-login'] ) && 'callback' === sanitize_key( wp_unslash( $_GET['m365-login'] ) );
$path_form = false;
if ( isset( $_SERVER['REQUEST_URI'] ) ) {
$request_path = wp_parse_url( sanitize_text_field( wp_unslash( $_SERVER['REQUEST_URI'] ) ), PHP_URL_PATH );
$expected = wp_parse_url( home_url( '/' . self::CALLBACK_PATH ), PHP_URL_PATH );
$path_form = is_string( $request_path ) && is_string( $expected )
&& untrailingslashit( $request_path ) === untrailingslashit( $expected );
}
if ( ! $query_form && ! $path_form ) {
return;
}
$this->handle_callback();
}
/**
* Processes the authorization response, exchanges the code, verifies the
* ID token and signs the matching WordPress user in.
*/
private function handle_callback() {
nocache_headers();
if ( ! $this->settings->is_configured() ) {
$this->fail( 'not_configured' );
}
// State is the CSRF token for this request; there is no WP nonce by design.
// phpcs:disable WordPress.Security.NonceVerification.Recommended
$state = isset( $_GET['state'] ) ? sanitize_text_field( wp_unslash( $_GET['state'] ) ) : '';
$code = isset( $_GET['code'] ) ? sanitize_text_field( wp_unslash( $_GET['code'] ) ) : '';
$error = isset( $_GET['error'] ) ? sanitize_key( wp_unslash( $_GET['error'] ) ) : '';
// phpcs:enable WordPress.Security.NonceVerification.Recommended
if ( '' === $state || ! preg_match( '/^[A-Za-z0-9_\-]{20,128}$/', $state ) ) {
$this->fail( 'invalid_state' );
}
// Consume the state immediately: every state is single use.
$key = $this->state_key( $state );
$attempt = get_transient( $key );
delete_transient( $key );
if ( ! is_array( $attempt ) || empty( $attempt['nonce'] ) || empty( $attempt['verifier'] ) || empty( $attempt['cookie'] ) ) {
$this->fail( 'invalid_state' );
}
if ( empty( $attempt['created'] ) || ( time() - (int) $attempt['created'] ) > self::STATE_TTL ) {
$this->fail( 'invalid_state' );
}
// Bind the callback to the browser that started the flow.
$cookie_token = isset( $_COOKIE[ self::STATE_COOKIE ] ) ? sanitize_text_field( wp_unslash( $_COOKIE[ self::STATE_COOKIE ] ) ) : '';
$this->clear_state_cookie();
if ( '' === $cookie_token || ! hash_equals( $attempt['cookie'], hash( 'sha256', $cookie_token ) ) ) {
$this->fail( 'invalid_state' );
}
if ( '' !== $error ) {
$this->fail( 'access_denied' === $error ? 'access_denied' : 'provider_error' );
}
if ( '' === $code ) {
$this->fail( 'provider_error' );
}
$tokens = $this->exchange_code( $code, $attempt['verifier'] );
if ( is_wp_error( $tokens ) ) {
$this->log( 'Token exchange failed: ' . $tokens->get_error_message() );
$this->fail( 'token_exchange' );
}
$claims = $this->verify_id_token( $tokens['id_token'], $attempt['nonce'] );
if ( is_wp_error( $claims ) ) {
$this->log( 'ID token rejected: ' . $claims->get_error_message() );
$this->fail( 'invalid_token' );
}
$email = $this->email_from_claims( $claims );
if ( '' === $email ) {
$this->fail( 'no_email' );
}
if ( ! $this->domain_allowed( $email ) ) {
$this->fail( 'domain_not_allowed' );
}
$user = get_user_by( 'email', $email );
if ( ! $user instanceof WP_User ) {
/** This action is documented in wp-includes/user.php */
do_action( 'wp_login_failed', $email, new WP_Error( 'm365_login_no_user', 'No WordPress user with this e-mail address.' ) );
$this->fail( 'no_user' );
}
if ( is_multisite() && ! is_user_member_of_blog( $user->ID ) && ! is_super_admin( $user->ID ) ) {
$this->fail( 'no_user' );
}
// Bind the account to the immutable Microsoft object ID after first login.
$oid = isset( $claims['oid'] ) && is_string( $claims['oid'] ) ? strtolower( $claims['oid'] ) : '';
if ( $this->settings->get( 'bind_oid' ) ) {
if ( '' === $oid || ! M365_Login_Settings::is_guid( $oid ) ) {
$this->fail( 'invalid_token' );
}
$stored = (string) get_user_meta( $user->ID, self::META_OID, true );
if ( '' !== $stored && ! hash_equals( $stored, $oid ) ) {
$this->log( sprintf( 'Object ID mismatch for user #%d.', $user->ID ) );
$this->fail( 'oid_mismatch' );
}
if ( '' === $stored ) {
update_user_meta( $user->ID, self::META_OID, $oid );
}
}
/**
* Allows blocking a login after all checks passed (e.g. group membership).
*
* @param bool|WP_Error $allowed True to allow.
* @param WP_User $user Matched user.
* @param array $claims Verified ID token claims.
*/
$allowed = apply_filters( 'm365_login_allow_user', true, $user, $claims );
if ( true !== $allowed ) {
$this->fail( 'not_allowed' );
}
update_user_meta( $user->ID, self::META_LAST_LOGIN, time() );
$remember = (bool) $this->settings->get( 'remember_me' );
wp_set_current_user( $user->ID );
wp_set_auth_cookie( $user->ID, $remember, is_ssl() );
/** This action is documented in wp-includes/user.php */
do_action( 'wp_login', $user->user_login, $user );
/**
* Fires after a successful Microsoft login.
*
* @param WP_User $user User.
* @param array $claims Verified claims.
*/
do_action( 'm365_login_success', $user, $claims );
$redirect_to = ! empty( $attempt['redirect_to'] ) ? $attempt['redirect_to'] : admin_url();
/** This filter is documented in wp-login.php */
$redirect_to = apply_filters( 'login_redirect', $redirect_to, $redirect_to, $user );
wp_safe_redirect( $redirect_to );
exit;
}
/* ------------------------------------------------------------------ */
/* Helpers */
/* ------------------------------------------------------------------ */
/**
* Exchanges the authorization code for tokens.
*
* @param string $code Authorization code.
* @param string $verifier PKCE verifier.
* @return array|WP_Error
*/
private function exchange_code( $code, $verifier ) {
$response = wp_remote_post(
$this->token_endpoint(),
array(
'timeout' => self::HTTP_TIMEOUT,
'headers' => array( 'Accept' => 'application/json' ),
'body' => array(
'client_id' => $this->settings->get( 'client_id' ),
'client_secret' => $this->settings->client_secret(),
'grant_type' => 'authorization_code',
'code' => $code,
'redirect_uri' => $this->settings->redirect_uri(),
'code_verifier' => $verifier,
'scope' => 'openid profile email',
),
)
);
if ( is_wp_error( $response ) ) {
return $response;
}
$body = json_decode( wp_remote_retrieve_body( $response ), true );
$http = (int) wp_remote_retrieve_response_code( $response );
if ( 200 !== $http || ! is_array( $body ) ) {
$detail = is_array( $body ) && ! empty( $body['error'] ) ? (string) $body['error'] : 'HTTP ' . $http;
return new WP_Error( 'token_http', $detail );
}
if ( empty( $body['id_token'] ) || ! is_string( $body['id_token'] ) ) {
return new WP_Error( 'token_missing', 'No id_token in response.' );
}
return $body;
}
/**
* Verifies the ID token, refreshing the JWKS cache once on an unknown key ID.
*
* @param string $id_token Token.
* @param string $nonce Expected nonce.
* @return array|WP_Error
*/
private function verify_id_token( $id_token, $nonce ) {
$tenant = $this->settings->tenant();
$expected = array(
'aud' => (string) $this->settings->get( 'client_id' ),
'nonce' => $nonce,
'tenant' => M365_Login_Settings::is_guid( $tenant ) ? $tenant : '',
);
$jwks = $this->get_jwks( false );
if ( is_wp_error( $jwks ) ) {
return $jwks;
}
$claims = M365_Login_JWT::verify( $id_token, $jwks, $expected );
if ( is_wp_error( $claims ) && 'jwt_unknown_kid' === $claims->get_error_code() ) {
// Key rollover: fetch a fresh key set and try once more.
$jwks = $this->get_jwks( true );
if ( is_wp_error( $jwks ) ) {
return $jwks;
}
$claims = M365_Login_JWT::verify( $id_token, $jwks, $expected );
}
return $claims;
}
/**
* Fetches (and caches) the JWKS document.
*
* @param bool $force Bypass cache.
* @return array|WP_Error
*/
private function get_jwks( $force = false ) {
$cache_key = 'm365_login_jwks_' . md5( $this->jwks_endpoint() );
if ( ! $force ) {
$cached = get_transient( $cache_key );
if ( is_array( $cached ) && ! empty( $cached['keys'] ) ) {
return $cached;
}
}
$response = wp_remote_get( $this->jwks_endpoint(), array( 'timeout' => self::HTTP_TIMEOUT ) );
if ( is_wp_error( $response ) ) {
return $response;
}
if ( 200 !== (int) wp_remote_retrieve_response_code( $response ) ) {
return new WP_Error( 'jwks_http', 'JWKS endpoint returned HTTP ' . wp_remote_retrieve_response_code( $response ) );
}
$jwks = json_decode( wp_remote_retrieve_body( $response ), true );
if ( ! is_array( $jwks ) || empty( $jwks['keys'] ) || ! is_array( $jwks['keys'] ) ) {
return new WP_Error( 'jwks_format', 'JWKS document is invalid.' );
}
set_transient( $cache_key, $jwks, self::JWKS_CACHE_TTL );
return $jwks;
}
/**
* Fetches the OpenID configuration (used by the admin "test connection" button).
*
* @return array|WP_Error
*/
public function fetch_discovery() {
$response = wp_remote_get( $this->discovery_url(), array( 'timeout' => self::HTTP_TIMEOUT ) );
if ( is_wp_error( $response ) ) {
return $response;
}
$code = (int) wp_remote_retrieve_response_code( $response );
$body = json_decode( wp_remote_retrieve_body( $response ), true );
if ( 200 !== $code || ! is_array( $body ) || empty( $body['issuer'] ) ) {
return new WP_Error( 'discovery', sprintf( 'HTTP %d', $code ) );
}
return $body;
}
/**
* Extracts the e-mail address used for matching.
*
* @param array $claims Verified claims.
* @return string Lowercase e-mail or empty string.
*/
private function email_from_claims( $claims ) {
$candidates = array();
if ( ! empty( $claims['email'] ) && is_string( $claims['email'] ) ) {
$candidates[] = $claims['email'];
}
if ( $this->settings->get( 'upn_fallback' ) && ! empty( $claims['preferred_username'] ) && is_string( $claims['preferred_username'] ) ) {
$candidates[] = $claims['preferred_username'];
}
foreach ( $candidates as $candidate ) {
$candidate = strtolower( trim( $candidate ) );
if ( is_email( $candidate ) ) {
/**
* Filters the e-mail address used to look up the WordPress user.
*
* @param string $email E-mail from the token.
* @param array $claims Verified claims.
*/
return (string) apply_filters( 'm365_login_match_email', $candidate, $claims );
}
}
return '';
}
/**
* Checks the optional domain allow-list.
*
* @param string $email E-mail.
* @return bool
*/
private function domain_allowed( $email ) {
$allowed = $this->settings->allowed_domains();
if ( empty( $allowed ) ) {
return true;
}
$domain = strtolower( substr( strrchr( $email, '@' ), 1 ) );
return in_array( $domain, $allowed, true );
}
/**
* Transient key for a state value.
*
* @param string $state State.
* @return string
*/
private function state_key( $state ) {
return 'm365_login_st_' . hash_hmac( 'sha256', $state, wp_salt( 'nonce' ) );
}
/**
* Sets the short-lived state cookie.
*
* @param string $token Cookie value.
*/
private function set_state_cookie( $token ) {
$this->send_cookie( $token, time() + self::STATE_TTL );
}
/**
* Removes the state cookie.
*/
private function clear_state_cookie() {
$this->send_cookie( '', time() - YEAR_IN_SECONDS );
}
/**
* Cookie helper: HttpOnly, SameSite=Lax (needed for the top-level redirect back), Secure on HTTPS.
*
* @param string $value Value.
* @param int $expires Expiry timestamp.
*/
private function send_cookie( $value, $expires ) {
$path = wp_parse_url( home_url( '/' ), PHP_URL_PATH );
$path = is_string( $path ) && '' !== $path ? $path : '/';
setcookie(
self::STATE_COOKIE,
$value,
array(
'expires' => $expires,
'path' => $path,
'domain' => COOKIE_DOMAIN ? COOKIE_DOMAIN : '',
'secure' => is_ssl(),
'httponly' => true,
'samesite' => 'Lax',
)
);
}
/**
* Aborts the flow and shows a generic error on the login screen.
*
* @param string $code Error code (mapped to a translated message on the login page).
*/
private function fail( $code ) {
$this->clear_state_cookie();
wp_safe_redirect( add_query_arg( 'm365_error', rawurlencode( $code ), wp_login_url() ) );
exit;
}
/**
* Writes to the PHP error log when WP_DEBUG_LOG is enabled.
*
* @param string $message Message.
*/
private function log( $message ) {
if ( defined( 'WP_DEBUG' ) && WP_DEBUG && defined( 'WP_DEBUG_LOG' ) && WP_DEBUG_LOG ) {
error_log( '[M365 Login] ' . $message ); // phpcs:ignore WordPress.PHP.DevelopmentFunctions.error_log_error_log
}
}
/**
* Maps error codes to messages on the login screen.
*
* @param WP_Error $errors Login errors.
* @return WP_Error
*/
public function login_errors( $errors ) {
// phpcs:ignore WordPress.Security.NonceVerification.Recommended -- read-only display of a whitelisted error code.
$code = isset( $_GET['m365_error'] ) ? sanitize_key( wp_unslash( $_GET['m365_error'] ) ) : '';
if ( '' === $code ) {
return $errors;
}
$messages = array(
'not_configured' => __( 'Microsoft login is not configured yet.', 'm365-login' ),
'invalid_state' => __( 'The login request expired or was invalid. Please try again.', 'm365-login' ),
'access_denied' => __( 'Microsoft sign-in was cancelled.', 'm365-login' ),
'provider_error' => __( 'Microsoft returned an error. Please try again.', 'm365-login' ),
'token_exchange' => __( 'Could not complete the sign-in with Microsoft. Please try again or contact an administrator.', 'm365-login' ),
'invalid_token' => __( 'The Microsoft sign-in could not be verified.', 'm365-login' ),
'no_email' => __( 'Your Microsoft account did not provide an e-mail address.', 'm365-login' ),
'domain_not_allowed' => __( 'Your e-mail domain is not allowed to sign in here.', 'm365-login' ),
'no_user' => __( 'No WordPress account exists for your Microsoft e-mail address.', 'm365-login' ),
'oid_mismatch' => __( 'This WordPress account is linked to a different Microsoft account. Please contact an administrator.', 'm365-login' ),
'not_allowed' => __( 'You are not allowed to sign in with this account.', 'm365-login' ),
);
if ( ! $errors instanceof WP_Error ) {
$errors = new WP_Error();
}
$errors->add(
'm365_login_' . $code,
isset( $messages[ $code ] ) ? $messages[ $code ] : $messages['provider_error'],
'access_denied' === $code ? 'message' : 'error'
);
return $errors;
}
}

View file

@ -0,0 +1,191 @@
<?php
/**
* Login page button.
*
* @package M365_Login
*/
defined( 'ABSPATH' ) || exit;
/**
* Renders the "Sign in with Microsoft" button on wp-login.php.
*/
class M365_Login_Button {
/**
* Settings.
*
* @var M365_Login_Settings
*/
private $settings;
/**
* Constructor.
*
* @param M365_Login_Settings $settings Settings.
*/
public function __construct( M365_Login_Settings $settings ) {
$this->settings = $settings;
add_action( 'login_enqueue_scripts', array( $this, 'enqueue' ) );
add_filter( 'login_message', array( $this, 'render_above' ), 20 );
add_action( 'login_footer', array( $this, 'render_below' ) );
add_shortcode( 'm365_login_button', array( $this, 'shortcode' ) );
}
/**
* Whether the button should be shown for the current login screen.
*
* @return bool
*/
private function should_render() {
if ( ! $this->settings->is_configured() ) {
return false;
}
// phpcs:disable WordPress.Security.NonceVerification.Recommended -- read-only routing check.
$action = isset( $_REQUEST['action'] ) ? sanitize_key( wp_unslash( $_REQUEST['action'] ) ) : 'login';
$interim = ! empty( $_REQUEST['interim-login'] );
// phpcs:enable WordPress.Security.NonceVerification.Recommended
if ( $interim || ! in_array( $action, array( '', 'login' ), true ) ) {
return false;
}
/**
* Filters whether the Microsoft button is displayed on the login screen.
*
* @param bool $show Show the button.
*/
return (bool) apply_filters( 'm365_login_show_button', true );
}
/**
* Enqueues login styles and the small positioning script.
*/
public function enqueue() {
if ( ! $this->should_render() ) {
return;
}
wp_enqueue_style( 'm365-login', M365_LOGIN_URL . 'assets/css/login.css', array(), M365_LOGIN_VERSION );
wp_add_inline_style( 'm365-login', $this->css_variables() );
if ( 'below' === $this->settings->get( 'button_position' ) ) {
wp_enqueue_script( 'm365-login', M365_LOGIN_URL . 'assets/js/login.js', array(), M365_LOGIN_VERSION, true );
}
}
/**
* CSS custom properties derived from the settings.
*
* @return string
*/
public function css_variables() {
$s = $this->settings->all();
return sprintf(
'.m365-login{--m365-bg:%1$s;--m365-bg-hover:%2$s;--m365-color:%3$s;--m365-border:%4$s;--m365-radius:%5$dpx;}',
sanitize_hex_color( $s['button_bg'] ),
sanitize_hex_color( $s['button_bg_hover'] ),
sanitize_hex_color( $s['button_color'] ),
sanitize_hex_color( $s['button_border'] ),
absint( $s['button_radius'] )
);
}
/**
* Output above the form (via login_message).
*
* @param string $message Existing message HTML.
* @return string
*/
public function render_above( $message ) {
if ( 'above' !== $this->settings->get( 'button_position' ) || ! $this->should_render() ) {
return $message;
}
return $message . $this->markup( 'above' );
}
/**
* Output below the form (moved into place by login.js).
*/
public function render_below() {
if ( 'below' !== $this->settings->get( 'button_position' ) || ! $this->should_render() ) {
return;
}
echo $this->markup( 'below' ); // phpcs:ignore WordPress.Security.EscapeOutput.OutputNotEscaped -- markup() escapes everything.
}
/**
* Shortcode for placing the button on custom login pages.
*
* @param array $atts Attributes.
* @return string
*/
public function shortcode( $atts ) {
if ( ! $this->settings->is_configured() || is_user_logged_in() ) {
return '';
}
$atts = shortcode_atts( array( 'redirect' => '' ), $atts, 'm365_login_button' );
wp_enqueue_style( 'm365-login', M365_LOGIN_URL . 'assets/css/login.css', array(), M365_LOGIN_VERSION );
wp_add_inline_style( 'm365-login', $this->css_variables() );
return '<div class="m365-login m365-login--shortcode">' . $this->button( esc_url_raw( $atts['redirect'] ) ) . '</div>';
}
/**
* Full block: divider + button.
*
* @param string $position 'above' or 'below'.
* @return string
*/
public function markup( $position ) {
// phpcs:ignore WordPress.Security.NonceVerification.Recommended -- passed through to the flow, validated there.
$redirect_to = isset( $_REQUEST['redirect_to'] ) ? esc_url_raw( wp_unslash( $_REQUEST['redirect_to'] ) ) : '';
$divider = (string) $this->settings->get( 'divider_text' );
$divider = '' === trim( $divider ) ? '' : '<div class="m365-login__divider" aria-hidden="true"><span>' . esc_html( $divider ) . '</span></div>';
$html = '<div class="m365-login m365-login--' . esc_attr( $position ) . '" id="m365-login-block">';
$html .= 'above' === $position ? $this->button( $redirect_to ) . $divider : $divider . $this->button( $redirect_to );
$html .= '</div>';
return $html;
}
/**
* Button markup.
*
* @param string $redirect_to Post-login destination.
* @return string
*/
public function button( $redirect_to = '' ) {
$auth = M365_Login::instance()->auth;
$url = $auth->start_url( $redirect_to );
$icon = '';
if ( $this->settings->get( 'button_show_icon' ) ) {
$custom = (string) $this->settings->get( 'button_icon' );
if ( '' !== $custom && M365_Login_Settings::is_safe_image_url( $custom ) ) {
$icon = '<img class="m365-login__icon" src="' . esc_url( $custom ) . '" alt="" width="20" height="20" loading="lazy" />';
} else {
$icon = self::microsoft_logo();
}
}
return '<a class="m365-login__button" href="' . esc_url( $url ) . '" rel="nofollow">'
. $icon
. '<span class="m365-login__label">' . esc_html( $this->settings->get( 'button_text' ) ) . '</span>'
. '</a>';
}
/**
* Bundled Microsoft logo (inline SVG, four coloured squares).
*
* @return string
*/
public static function microsoft_logo() {
return '<svg class="m365-login__icon" xmlns="http://www.w3.org/2000/svg" viewBox="0 0 23 23" width="20" height="20" aria-hidden="true" focusable="false">'
. '<path fill="#f25022" d="M1 1h10v10H1z"/>'
. '<path fill="#7fba00" d="M12 1h10v10H12z"/>'
. '<path fill="#00a4ef" d="M1 12h10v10H1z"/>'
. '<path fill="#ffb900" d="M12 12h10v10H12z"/>'
. '</svg>';
}
}

View file

@ -0,0 +1,85 @@
<?php
/**
* Symmetric encryption for secrets at rest.
*
* @package M365_Login
*/
defined( 'ABSPATH' ) || exit;
/**
* AES-256-GCM helper keyed from the WordPress salts.
*
* The key is derived from AUTH_KEY / SECURE_AUTH_KEY (via wp_salt()), so the
* stored client secret is useless without access to wp-config.php.
*/
final class M365_Login_Crypto {
const PREFIX = 'm365v1:';
const CIPHER = 'aes-256-gcm';
/**
* Derives the encryption key.
*
* @return string 32 raw bytes.
*/
private static function key() {
$material = wp_salt( 'auth' ) . '|' . wp_salt( 'secure_auth' ) . '|m365-login';
if ( function_exists( 'hash_hkdf' ) ) {
return hash_hkdf( 'sha256', $material, 32, 'm365-login-client-secret' );
}
return hash( 'sha256', $material, true );
}
/**
* Whether encryption is available.
*
* @return bool
*/
public static function available() {
return function_exists( 'openssl_encrypt' ) && in_array( self::CIPHER, openssl_get_cipher_methods(), true );
}
/**
* Encrypts a string.
*
* @param string $plain Plain text.
* @return string|false
*/
public static function encrypt( $plain ) {
if ( ! self::available() ) {
return false;
}
$iv = random_bytes( 12 );
$tag = '';
$ct = openssl_encrypt( $plain, self::CIPHER, self::key(), OPENSSL_RAW_DATA, $iv, $tag, '', 16 );
if ( false === $ct || '' === $tag ) {
return false;
}
// phpcs:ignore WordPress.PHP.DiscouragedPHPFunctions.obfuscation_base64_encode
return self::PREFIX . base64_encode( $iv . $tag . $ct );
}
/**
* Decrypts a string produced by encrypt().
*
* @param string $stored Stored value.
* @return string|false
*/
public static function decrypt( $stored ) {
if ( ! is_string( $stored ) || 0 !== strpos( $stored, self::PREFIX ) || ! self::available() ) {
return false;
}
// phpcs:ignore WordPress.PHP.DiscouragedPHPFunctions.obfuscation_base64_decode
$raw = base64_decode( substr( $stored, strlen( self::PREFIX ) ), true );
if ( false === $raw || strlen( $raw ) < 28 ) {
return false;
}
$iv = substr( $raw, 0, 12 );
$tag = substr( $raw, 12, 16 );
$ct = substr( $raw, 28 );
$plain = openssl_decrypt( $ct, self::CIPHER, self::key(), OPENSSL_RAW_DATA, $iv, $tag );
return false === $plain ? false : $plain;
}
}

View file

@ -0,0 +1,236 @@
<?php
/**
* ID token validation.
*
* @package M365_Login
*/
defined( 'ABSPATH' ) || exit;
/**
* Verifies RS256 signed JWTs against the Microsoft JWKS.
*/
final class M365_Login_JWT {
const LEEWAY = 120; // Seconds of clock skew tolerated.
/**
* Base64url decode.
*
* @param string $data Data.
* @return string|false
*/
public static function b64url_decode( $data ) {
$data = strtr( $data, '-_', '+/' );
$pad = strlen( $data ) % 4;
if ( $pad ) {
$data .= str_repeat( '=', 4 - $pad );
}
// phpcs:ignore WordPress.PHP.DiscouragedPHPFunctions.obfuscation_base64_decode
return base64_decode( $data, true );
}
/**
* Base64url encode.
*
* @param string $data Data.
* @return string
*/
public static function b64url_encode( $data ) {
// phpcs:ignore WordPress.PHP.DiscouragedPHPFunctions.obfuscation_base64_encode
return rtrim( strtr( base64_encode( $data ), '+/', '-_' ), '=' );
}
/**
* Decodes and verifies a JWT.
*
* @param string $jwt Compact serialised token.
* @param array $jwks JWKS document (array with 'keys').
* @param array $expected Expected claims: 'aud', 'nonce', 'tenant' (optional GUID).
* @return array|WP_Error Claims on success.
*/
public static function verify( $jwt, $jwks, $expected ) {
$parts = explode( '.', $jwt );
if ( 3 !== count( $parts ) ) {
return new WP_Error( 'jwt_format', 'Malformed token.' );
}
list( $h64, $p64, $s64 ) = $parts;
$header = json_decode( self::b64url_decode( $h64 ), true );
$claims = json_decode( self::b64url_decode( $p64 ), true );
$signature = self::b64url_decode( $s64 );
if ( ! is_array( $header ) || ! is_array( $claims ) || false === $signature ) {
return new WP_Error( 'jwt_format', 'Malformed token.' );
}
// Only RS256 is accepted; refuse "none" and anything HMAC based.
if ( empty( $header['alg'] ) || 'RS256' !== $header['alg'] ) {
return new WP_Error( 'jwt_alg', 'Unsupported token algorithm.' );
}
if ( empty( $header['kid'] ) || ! is_string( $header['kid'] ) ) {
return new WP_Error( 'jwt_kid', 'Token has no key ID.' );
}
$public_key = self::find_key( $jwks, $header['kid'] );
if ( ! $public_key ) {
return new WP_Error( 'jwt_unknown_kid', 'Signing key not found.' );
}
$ok = openssl_verify( $h64 . '.' . $p64, $signature, $public_key, OPENSSL_ALGO_SHA256 );
if ( 1 !== $ok ) {
return new WP_Error( 'jwt_signature', 'Token signature is invalid.' );
}
$now = time();
if ( empty( $claims['exp'] ) || ! is_numeric( $claims['exp'] ) || ( (int) $claims['exp'] + self::LEEWAY ) < $now ) {
return new WP_Error( 'jwt_expired', 'Token has expired.' );
}
if ( isset( $claims['nbf'] ) && is_numeric( $claims['nbf'] ) && ( (int) $claims['nbf'] - self::LEEWAY ) > $now ) {
return new WP_Error( 'jwt_nbf', 'Token is not valid yet.' );
}
if ( isset( $claims['iat'] ) && is_numeric( $claims['iat'] ) && ( (int) $claims['iat'] - self::LEEWAY ) > $now ) {
return new WP_Error( 'jwt_iat', 'Token issued in the future.' );
}
// Audience must be our client ID.
$aud = isset( $claims['aud'] ) ? $claims['aud'] : null;
if ( is_array( $aud ) ) {
$aud_ok = in_array( $expected['aud'], $aud, true );
} else {
$aud_ok = is_string( $aud ) && hash_equals( $expected['aud'], $aud );
}
if ( ! $aud_ok ) {
return new WP_Error( 'jwt_aud', 'Token audience mismatch.' );
}
// Tenant / issuer: v2.0 issuer is https://login.microsoftonline.com/{tid}/v2.0.
if ( empty( $claims['tid'] ) || ! is_string( $claims['tid'] ) || ! M365_Login_Settings::is_guid( $claims['tid'] ) ) {
return new WP_Error( 'jwt_tid', 'Token has no tenant ID.' );
}
if ( ! empty( $expected['tenant'] ) && ! hash_equals( strtolower( $expected['tenant'] ), strtolower( $claims['tid'] ) ) ) {
return new WP_Error( 'jwt_tenant', 'Token was issued by a different tenant.' );
}
$expected_iss = 'https://login.microsoftonline.com/' . strtolower( $claims['tid'] ) . '/v2.0';
if ( empty( $claims['iss'] ) || ! is_string( $claims['iss'] ) || ! hash_equals( $expected_iss, strtolower( $claims['iss'] ) ) ) {
return new WP_Error( 'jwt_iss', 'Token issuer mismatch.' );
}
// Nonce binds the token to the login attempt.
if ( empty( $claims['nonce'] ) || ! is_string( $claims['nonce'] ) || ! hash_equals( $expected['nonce'], $claims['nonce'] ) ) {
return new WP_Error( 'jwt_nonce', 'Token nonce mismatch.' );
}
return $claims;
}
/**
* Finds a key by kid and returns an OpenSSL public key resource/object.
*
* @param array $jwks JWKS document.
* @param string $kid Key ID.
* @return mixed|null
*/
private static function find_key( $jwks, $kid ) {
if ( empty( $jwks['keys'] ) || ! is_array( $jwks['keys'] ) ) {
return null;
}
foreach ( $jwks['keys'] as $key ) {
if ( ! is_array( $key ) || empty( $key['kid'] ) || ! hash_equals( (string) $key['kid'], $kid ) ) {
continue;
}
if ( isset( $key['kty'] ) && 'RSA' !== $key['kty'] ) {
continue;
}
if ( isset( $key['use'] ) && 'sig' !== $key['use'] ) {
continue;
}
// Prefer the embedded certificate, fall back to modulus/exponent.
if ( ! empty( $key['x5c'][0] ) && is_string( $key['x5c'][0] ) ) {
$pem = "-----BEGIN CERTIFICATE-----\n" . chunk_split( $key['x5c'][0], 64, "\n" ) . "-----END CERTIFICATE-----\n";
$pub = openssl_pkey_get_public( $pem );
if ( $pub ) {
return $pub;
}
}
if ( ! empty( $key['n'] ) && ! empty( $key['e'] ) ) {
$pem = self::rsa_pem_from_components( $key['n'], $key['e'] );
if ( $pem ) {
$pub = openssl_pkey_get_public( $pem );
if ( $pub ) {
return $pub;
}
}
}
}
return null;
}
/**
* Builds a PEM encoded SubjectPublicKeyInfo from JWK modulus / exponent.
*
* @param string $n Base64url modulus.
* @param string $e Base64url exponent.
* @return string|false
*/
private static function rsa_pem_from_components( $n, $e ) {
$modulus = self::b64url_decode( $n );
$exponent = self::b64url_decode( $e );
if ( false === $modulus || false === $exponent ) {
return false;
}
$modulus = self::der_integer( $modulus );
$exponent = self::der_integer( $exponent );
$rsa_key = self::der_seq( $modulus . $exponent );
// rsaEncryption OID 1.2.840.113549.1.1.1 + NULL.
$alg_id = self::der_seq( "\x06\x09\x2a\x86\x48\x86\xf7\x0d\x01\x01\x01\x05\x00" );
$bit_str = "\x03" . self::der_len( strlen( $rsa_key ) + 1 ) . "\x00" . $rsa_key;
$spki = self::der_seq( $alg_id . $bit_str );
// phpcs:ignore WordPress.PHP.DiscouragedPHPFunctions.obfuscation_base64_encode
return "-----BEGIN PUBLIC KEY-----\n" . chunk_split( base64_encode( $spki ), 64, "\n" ) . "-----END PUBLIC KEY-----\n";
}
/**
* DER length encoding.
*
* @param int $len Length.
* @return string
*/
private static function der_len( $len ) {
if ( $len < 128 ) {
return chr( $len );
}
$bytes = ltrim( pack( 'N', $len ), "\x00" );
return chr( 0x80 | strlen( $bytes ) ) . $bytes;
}
/**
* DER SEQUENCE.
*
* @param string $content Content.
* @return string
*/
private static function der_seq( $content ) {
return "\x30" . self::der_len( strlen( $content ) ) . $content;
}
/**
* DER INTEGER (unsigned big-endian input).
*
* @param string $bytes Raw bytes.
* @return string
*/
private static function der_integer( $bytes ) {
$bytes = ltrim( $bytes, "\x00" );
if ( '' === $bytes || ( ord( $bytes[0] ) & 0x80 ) ) {
$bytes = "\x00" . $bytes;
}
return "\x02" . self::der_len( strlen( $bytes ) ) . $bytes;
}
}

View file

@ -0,0 +1,283 @@
<?php
/**
* Settings storage and sanitisation.
*
* @package M365_Login
*/
defined( 'ABSPATH' ) || exit;
/**
* Reads, sanitises and writes plugin settings.
*/
class M365_Login_Settings {
/**
* Cached settings.
*
* @var array|null
*/
private $cache = null;
/**
* Default settings.
*
* @return array
*/
public function defaults() {
return array(
// Connection.
'tenant_id' => '',
'client_id' => '',
'client_secret' => '', // Stored encrypted.
'prompt' => 'select_account',
// Security / matching.
'upn_fallback' => 1,
'bind_oid' => 1,
'allowed_domains' => '',
'remember_me' => 0,
// Button appearance.
'button_text' => __( 'Sign in with Microsoft', 'm365-login' ),
'button_icon' => '', // Empty = bundled Microsoft logo.
'button_show_icon' => 1,
'button_bg' => '#2f2f2f',
'button_bg_hover' => '#1a1a1a',
'button_color' => '#ffffff',
'button_border' => '#2f2f2f',
'button_radius' => 4,
'button_position' => 'below',
'divider_text' => __( 'or', 'm365-login' ),
);
}
/**
* Returns all settings merged with defaults.
*
* @return array
*/
public function all() {
if ( null === $this->cache ) {
$stored = get_option( M365_LOGIN_OPTION, array() );
$this->cache = wp_parse_args( is_array( $stored ) ? $stored : array(), $this->defaults() );
}
return $this->cache;
}
/**
* Returns a single setting.
*
* @param string $key Setting key.
* @param mixed $default Fallback.
* @return mixed
*/
public function get( $key, $default = null ) {
$all = $this->all();
return array_key_exists( $key, $all ) ? $all[ $key ] : $default;
}
/**
* Decrypted client secret.
*
* @return string
*/
public function client_secret() {
$enc = (string) $this->get( 'client_secret', '' );
if ( '' === $enc ) {
return '';
}
$plain = M365_Login_Crypto::decrypt( $enc );
return is_string( $plain ) ? $plain : '';
}
/**
* Whether the plugin has everything it needs to start a login.
*
* @return bool
*/
public function is_configured() {
return '' !== $this->get( 'tenant_id' ) && '' !== $this->get( 'client_id' ) && '' !== $this->client_secret();
}
/**
* Tenant segment used in Microsoft endpoints.
*
* @return string
*/
public function tenant() {
$tenant = (string) $this->get( 'tenant_id', '' );
return '' === $tenant ? 'organizations' : $tenant;
}
/**
* Redirect URI registered in Entra ID.
*
* @return string
*/
public function redirect_uri() {
if ( $this->uses_pretty_callback() ) {
$uri = home_url( '/m365-login/callback' );
} else {
$uri = add_query_arg( 'm365-login', 'callback', home_url( '/' ) );
}
/**
* Filters the redirect URI registered in Entra ID.
*
* @param string $uri Redirect URI.
*/
return (string) apply_filters( 'm365_login_redirect_uri', $uri );
}
/**
* Whether the callback can use a path (requires rewrite rules) instead of a query argument.
*
* @return bool
*/
public function uses_pretty_callback() {
return '' !== (string) get_option( 'permalink_structure', '' );
}
/**
* Allowed e-mail domains as an array (lowercase, no leading @).
*
* @return string[]
*/
public function allowed_domains() {
$raw = (string) $this->get( 'allowed_domains', '' );
if ( '' === trim( $raw ) ) {
return array();
}
$parts = preg_split( '/[\s,;]+/', strtolower( $raw ) );
$out = array();
foreach ( $parts as $p ) {
$p = ltrim( trim( $p ), '@' );
if ( '' !== $p ) {
$out[] = $p;
}
}
return array_values( array_unique( $out ) );
}
/**
* Sanitises settings coming from the admin form.
*
* @param array $input Raw input.
* @return array
*/
public function sanitize( $input ) {
$defaults = $this->defaults();
$current = $this->all();
$input = is_array( $input ) ? $input : array();
$out = $current;
// Tenant: GUID or one of the well-known aliases.
$tenant = isset( $input['tenant_id'] ) ? trim( sanitize_text_field( wp_unslash( $input['tenant_id'] ) ) ) : '';
$tenant = strtolower( $tenant );
if ( '' !== $tenant && ! self::is_valid_tenant( $tenant ) ) {
add_settings_error( M365_LOGIN_OPTION, 'tenant_id', __( 'The tenant ID must be a GUID (e.g. 1a2b3c4d-…) or one of "organizations", "common", "consumers".', 'm365-login' ) );
$tenant = $current['tenant_id'];
}
$out['tenant_id'] = $tenant;
// Client ID: GUID.
$client_id = isset( $input['client_id'] ) ? trim( sanitize_text_field( wp_unslash( $input['client_id'] ) ) ) : '';
if ( '' !== $client_id && ! self::is_guid( $client_id ) ) {
add_settings_error( M365_LOGIN_OPTION, 'client_id', __( 'The application (client) ID must be a GUID.', 'm365-login' ) );
$client_id = $current['client_id'];
}
$out['client_id'] = strtolower( $client_id );
// Client secret: only replaced when a new value was entered.
$secret_input = isset( $input['client_secret'] ) ? (string) wp_unslash( $input['client_secret'] ) : '';
$secret_input = trim( $secret_input );
if ( ! empty( $input['client_secret_clear'] ) ) {
$out['client_secret'] = '';
} elseif ( '' !== $secret_input ) {
if ( strlen( $secret_input ) > 512 || preg_match( '/[\x00-\x1F\x7F]/', $secret_input ) ) {
add_settings_error( M365_LOGIN_OPTION, 'client_secret', __( 'The client secret contains invalid characters.', 'm365-login' ) );
} else {
$enc = M365_Login_Crypto::encrypt( $secret_input );
if ( false === $enc ) {
add_settings_error( M365_LOGIN_OPTION, 'client_secret', __( 'The client secret could not be encrypted. Is the OpenSSL extension available?', 'm365-login' ) );
} else {
$out['client_secret'] = $enc;
}
}
}
$prompt = isset( $input['prompt'] ) ? sanitize_key( $input['prompt'] ) : '';
$out['prompt'] = in_array( $prompt, array( 'none', 'select_account', 'login' ), true ) ? $prompt : 'none';
$out['upn_fallback'] = empty( $input['upn_fallback'] ) ? 0 : 1;
$out['bind_oid'] = empty( $input['bind_oid'] ) ? 0 : 1;
$out['remember_me'] = empty( $input['remember_me'] ) ? 0 : 1;
$domains = isset( $input['allowed_domains'] ) ? sanitize_textarea_field( wp_unslash( $input['allowed_domains'] ) ) : '';
$domains = preg_replace( '/[^a-z0-9.\-@,;\s]/i', '', $domains );
$out['allowed_domains'] = trim( (string) $domains );
// Button.
$text = isset( $input['button_text'] ) ? sanitize_text_field( wp_unslash( $input['button_text'] ) ) : '';
$out['button_text'] = '' === trim( $text ) ? $defaults['button_text'] : mb_substr( $text, 0, 80 );
$icon = isset( $input['button_icon'] ) ? esc_url_raw( trim( wp_unslash( $input['button_icon'] ) ) ) : '';
$out['button_icon'] = self::is_safe_image_url( $icon ) ? $icon : '';
$out['button_show_icon'] = empty( $input['button_show_icon'] ) ? 0 : 1;
foreach ( array( 'button_bg', 'button_bg_hover', 'button_color', 'button_border' ) as $color_key ) {
$color = isset( $input[ $color_key ] ) ? sanitize_hex_color( trim( wp_unslash( $input[ $color_key ] ) ) ) : '';
$out[ $color_key ] = $color ? $color : $defaults[ $color_key ];
}
$radius = isset( $input['button_radius'] ) ? absint( $input['button_radius'] ) : $defaults['button_radius'];
$out['button_radius'] = min( 50, $radius );
$position = isset( $input['button_position'] ) ? sanitize_key( $input['button_position'] ) : 'below';
$out['button_position'] = in_array( $position, array( 'above', 'below' ), true ) ? $position : 'below';
$divider = isset( $input['divider_text'] ) ? sanitize_text_field( wp_unslash( $input['divider_text'] ) ) : '';
$out['divider_text'] = mb_substr( $divider, 0, 40 );
$this->cache = null;
return $out;
}
/**
* Checks a GUID.
*
* @param string $value Value.
* @return bool
*/
public static function is_guid( $value ) {
return (bool) preg_match( '/^[0-9a-f]{8}-[0-9a-f]{4}-[0-9a-f]{4}-[0-9a-f]{4}-[0-9a-f]{12}$/i', $value );
}
/**
* Checks a tenant identifier.
*
* @param string $value Value.
* @return bool
*/
public static function is_valid_tenant( $value ) {
return self::is_guid( $value ) || in_array( $value, array( 'organizations', 'common', 'consumers' ), true );
}
/**
* Only allows http(s) image URLs with a known image extension.
*
* @param string $url URL.
* @return bool
*/
public static function is_safe_image_url( $url ) {
if ( '' === $url ) {
return false;
}
$parts = wp_parse_url( $url );
if ( empty( $parts['scheme'] ) || ! in_array( strtolower( $parts['scheme'] ), array( 'http', 'https' ), true ) ) {
return false;
}
$path = isset( $parts['path'] ) ? strtolower( $parts['path'] ) : '';
return (bool) preg_match( '/\.(png|jpe?g|gif|svg|webp)$/', $path );
}
}

View file

@ -0,0 +1,125 @@
<?php
/**
* Plugin bootstrap.
*
* @package M365_Login
*/
defined( 'ABSPATH' ) || exit;
/**
* Wires the individual components together.
*/
final class M365_Login {
/**
* Singleton instance.
*
* @var M365_Login|null
*/
private static $instance = null;
/**
* Settings component.
*
* @var M365_Login_Settings
*/
public $settings;
/**
* Authentication component.
*
* @var M365_Login_Auth
*/
public $auth;
/**
* Login button component.
*
* @var M365_Login_Button
*/
public $button;
/**
* Admin component.
*
* @var M365_Login_Admin|null
*/
public $admin = null;
/**
* Returns the singleton.
*
* @return M365_Login
*/
public static function instance() {
if ( null === self::$instance ) {
self::$instance = new self();
}
return self::$instance;
}
/**
* Constructor.
*/
private function __construct() {
add_action( 'init', array( $this, 'load_textdomain' ) );
$this->settings = new M365_Login_Settings();
$this->auth = new M365_Login_Auth( $this->settings );
$this->button = new M365_Login_Button( $this->settings );
if ( is_admin() ) {
$this->admin = new M365_Login_Admin( $this->settings, $this->auth );
}
add_filter( 'plugin_action_links_' . plugin_basename( M365_LOGIN_FILE ), array( $this, 'action_links' ) );
}
/**
* Loads bundled translations.
*/
public function load_textdomain() {
load_plugin_textdomain( 'm365-login', false, dirname( plugin_basename( M365_LOGIN_FILE ) ) . '/languages' );
}
/**
* Adds a "Settings" link on the plugins screen.
*
* @param string[] $links Existing links.
* @return string[]
*/
public function action_links( $links ) {
$url = admin_url( 'options-general.php?page=m365-login' );
array_unshift( $links, '<a href="' . esc_url( $url ) . '">' . esc_html__( 'Settings', 'm365-login' ) . '</a>' );
return $links;
}
/**
* Activation hook: seed defaults and check requirements.
*/
public static function activate() {
if ( version_compare( PHP_VERSION, '7.4', '<' ) ) {
deactivate_plugins( plugin_basename( M365_LOGIN_FILE ) );
wp_die(
esc_html__( 'M365 Login requires PHP 7.4 or newer.', 'm365-login' ),
esc_html__( 'Plugin activation failed', 'm365-login' ),
array( 'back_link' => true )
);
}
if ( ! function_exists( 'openssl_encrypt' ) ) {
deactivate_plugins( plugin_basename( M365_LOGIN_FILE ) );
wp_die(
esc_html__( 'M365 Login requires the PHP OpenSSL extension (needed to verify Microsoft token signatures and to encrypt the client secret).', 'm365-login' ),
esc_html__( 'Plugin activation failed', 'm365-login' ),
array( 'back_link' => true )
);
}
$settings = new M365_Login_Settings();
if ( false === get_option( M365_LOGIN_OPTION, false ) ) {
add_option( M365_LOGIN_OPTION, $settings->defaults(), '', 'no' );
}
}
}

Binary file not shown.

View file

@ -0,0 +1,460 @@
# German translation for M365 Login.
# This file is distributed under the GPL-2.0-or-later.
msgid ""
msgstr ""
"Project-Id-Version: M365 Login 1.0.0\n"
"Report-Msgid-Bugs-To: https://github.com/friloo/wp-m365-login/issues\n"
"MIME-Version: 1.0\n"
"Content-Type: text/plain; charset=UTF-8\n"
"Content-Transfer-Encoding: 8bit\n"
"POT-Creation-Date: 2026-09-22T00:00:00+00:00\n"
"PO-Revision-Date: 2026-09-22 12:00+0000\n"
"Last-Translator: friloo\n"
"Language-Team: German\n"
"Language: de_DE\n"
"Plural-Forms: nplurals=2; plural=(n != 1);\n"
"X-Generator: bin/make-pot.py\n"
"X-Domain: m365-login\n"
#: includes/class-m365-login-admin.php:63 includes/class-m365-login-admin.php:64 includes/class-m365-login-admin.php:203
msgid "M365 Login"
msgstr "M365 Login"
#: includes/class-m365-login-admin.php:102
msgid "M365 Login is active but not connected to Microsoft Entra ID yet."
msgstr "M365 Login ist aktiv, aber noch nicht mit Microsoft Entra ID verbunden."
#: includes/class-m365-login-admin.php:104
msgid "Open the settings"
msgstr "Einstellungen öffnen"
#: includes/class-m365-login-admin.php:132
msgid "Choose button icon"
msgstr "Button-Icon auswählen"
#: includes/class-m365-login-admin.php:133
msgid "Use this icon"
msgstr "Dieses Icon verwenden"
#: includes/class-m365-login-admin.php:134
msgid "Copied!"
msgstr "Kopiert!"
#: includes/class-m365-login-admin.php:135 includes/class-m365-login-admin.php:427
msgid "Copy"
msgstr "Kopieren"
#: includes/class-m365-login-admin.php:136
msgid "Testing…"
msgstr "Wird geprüft …"
#: includes/class-m365-login-admin.php:137
msgid "The tenant could not be reached. Check the tenant ID and the servers outgoing connections."
msgstr "Der Tenant ist nicht erreichbar. Bitte Tenant-ID und ausgehende Verbindungen des Servers prüfen."
#: includes/class-m365-login-admin.php:149
msgid "You are not allowed to do this."
msgstr "Dafür fehlt die Berechtigung."
#: includes/class-m365-login-admin.php:154
msgid "Please enter a valid tenant ID first."
msgstr "Bitte zuerst eine gültige Tenant-ID eingeben."
#. translators: %d: HTTP status code
#: includes/class-m365-login-admin.php:168
msgid "Microsoft answered with HTTP %d. Is the tenant ID correct?"
msgstr "Microsoft hat mit HTTP %d geantwortet. Ist die Tenant-ID korrekt?"
#. translators: %d: HTTP status code
#: includes/class-m365-login-admin.php:177
msgid "Tenant reachable. The OpenID configuration was loaded successfully."
msgstr "Tenant erreichbar. Die OpenID-Konfiguration wurde erfolgreich geladen."
#: includes/class-m365-login-admin.php:187
msgid "You are not allowed to access this page."
msgstr "Für diese Seite fehlt die Berechtigung."
#: includes/class-m365-login-admin.php:204
msgid "Let existing users sign in with their Microsoft 365 / Entra ID account."
msgstr "Bestehende Benutzer melden sich mit ihrem Microsoft 365 / Entra ID-Konto an."
#: includes/class-m365-login-admin.php:209
msgid "Connected"
msgstr "Verbunden"
#: includes/class-m365-login-admin.php:209
msgid "Setup incomplete"
msgstr "Einrichtung unvollständig"
#: includes/class-m365-login-admin.php:217
msgid "Connection"
msgstr "Verbindung"
#: includes/class-m365-login-admin.php:218
msgid "Button"
msgstr "Button"
#: includes/class-m365-login-admin.php:219
msgid "Security"
msgstr "Sicherheit"
#: includes/class-m365-login-admin.php:228
msgid "Microsoft Entra ID app registration"
msgstr "App-Registrierung in Microsoft Entra ID"
#: includes/class-m365-login-admin.php:229
msgid "Enter the values from your app registration in the Microsoft Entra admin center."
msgstr "Trage hier die Werte aus deiner App-Registrierung im Microsoft Entra Admin Center ein."
#: includes/class-m365-login-admin.php:232
msgid "Directory (tenant) ID"
msgstr "Verzeichnis-ID (Mandant/Tenant)"
#: includes/class-m365-login-admin.php:235
msgid "Test tenant"
msgstr "Tenant testen"
#: includes/class-m365-login-admin.php:237
msgid "Recommended: the GUID of your tenant. Only sign-ins from this tenant are accepted. \"organizations\" allows any work or school account."
msgstr "Empfohlen: die GUID deines Tenants. Dann werden nur Anmeldungen aus diesem Tenant akzeptiert. „organizations“ erlaubt beliebige Geschäfts-, Schul- oder Unikonten."
#: includes/class-m365-login-admin.php:242
msgid "Application (client) ID"
msgstr "Anwendungs-ID (Client)"
#: includes/class-m365-login-admin.php:247
msgid "Client secret"
msgstr "Geheimer Clientschlüssel (Client Secret)"
#: includes/class-m365-login-admin.php:249
msgid "•••••••••••• (stored, leave empty to keep)"
msgstr "•••••••••••• (gespeichert leer lassen, um zu behalten)"
#: includes/class-m365-login-admin.php:249
msgid "Paste the secret value"
msgstr "Wert des Secrets einfügen"
#: includes/class-m365-login-admin.php:250
msgid "Show secret"
msgstr "Secret anzeigen"
#: includes/class-m365-login-admin.php:255
msgid "Remove the stored secret"
msgstr "Gespeichertes Secret entfernen"
#: includes/class-m365-login-admin.php:258
msgid "Stored encrypted (AES-256-GCM, key derived from your WordPress salts) and never displayed again. Client secrets expire note the expiry date in Entra ID."
msgstr "Wird verschlüsselt gespeichert (AES-256-GCM, Schlüssel aus den WordPress-Salts abgeleitet) und nie wieder angezeigt. Client Secrets laufen ab Ablaufdatum in Entra ID notieren."
#: includes/class-m365-login-admin.php:262
msgid "Account prompt"
msgstr "Kontoauswahl"
#: includes/class-m365-login-admin.php:264
msgid "Always let the user pick an account (recommended)"
msgstr "Benutzer wählt immer ein Konto aus (empfohlen)"
#: includes/class-m365-login-admin.php:265
msgid "Use the current Microsoft session if available"
msgstr "Vorhandene Microsoft-Sitzung verwenden, falls vorhanden"
#: includes/class-m365-login-admin.php:266
msgid "Always require re-entering credentials"
msgstr "Immer erneute Eingabe der Anmeldedaten verlangen"
#: includes/class-m365-login-admin.php:275
msgid "Appearance"
msgstr "Darstellung"
#: includes/class-m365-login-admin.php:278
msgid "Live preview"
msgstr "Live-Vorschau"
#: includes/class-m365-login-admin.php:292
msgid "Button text"
msgstr "Button-Text"
#: includes/class-m365-login-admin.php:296
msgid "Divider text"
msgstr "Trennlinien-Text"
#: includes/class-m365-login-admin.php:298
msgid "Leave empty to hide the divider line."
msgstr "Leer lassen, um die Trennlinie auszublenden."
#: includes/class-m365-login-admin.php:303
msgid "Icon"
msgstr "Icon"
#: includes/class-m365-login-admin.php:306
msgid "Show an icon on the button"
msgstr "Icon auf dem Button anzeigen"
#: includes/class-m365-login-admin.php:317
msgid "Default: Microsoft logo"
msgstr "Standard: Microsoft-Logo"
#: includes/class-m365-login-admin.php:319
msgid "Choose from media library"
msgstr "Aus Mediathek wählen"
#: includes/class-m365-login-admin.php:320
msgid "Use Microsoft logo"
msgstr "Microsoft-Logo verwenden"
#: includes/class-m365-login-admin.php:322
msgid "PNG, SVG, JPG or WebP. Square images (e.g. 64×64 px) work best."
msgstr "PNG, SVG, JPG oder WebP. Quadratische Bilder (z. B. 64×64 px) eignen sich am besten."
#: includes/class-m365-login-admin.php:330
msgid "Background"
msgstr "Hintergrund"
#: includes/class-m365-login-admin.php:331
msgid "Background (hover)"
msgstr "Hintergrund (Hover)"
#: includes/class-m365-login-admin.php:332
msgid "Text colour"
msgstr "Textfarbe"
#: includes/class-m365-login-admin.php:333
msgid "Border"
msgstr "Rahmen"
#: includes/class-m365-login-admin.php:346
msgid "Corner radius"
msgstr "Eckenradius"
#: includes/class-m365-login-admin.php:350
msgid "Position on the login page"
msgstr "Position auf der Login-Seite"
#: includes/class-m365-login-admin.php:352
msgid "Below the login form"
msgstr "Unter dem Login-Formular"
#: includes/class-m365-login-admin.php:353
msgid "Above the login form"
msgstr "Über dem Login-Formular"
#: includes/class-m365-login-admin.php:359
msgid "Quick presets"
msgstr "Schnellauswahl"
#: includes/class-m365-login-admin.php:360
msgid "Microsoft dark"
msgstr "Microsoft dunkel"
#: includes/class-m365-login-admin.php:361
msgid "Microsoft light"
msgstr "Microsoft hell"
#: includes/class-m365-login-admin.php:362
msgid "Azure blue"
msgstr "Azure-Blau"
#: includes/class-m365-login-admin.php:363
msgid "WordPress blue"
msgstr "WordPress-Blau"
#: includes/class-m365-login-admin.php:371
msgid "User matching & hardening"
msgstr "Benutzerzuordnung & Härtung"
#: includes/class-m365-login-admin.php:372
msgid "Users are never created automatically. A Microsoft sign-in only succeeds when a WordPress user with the same e-mail address already exists."
msgstr "Benutzer werden nie automatisch angelegt. Eine Microsoft-Anmeldung gelingt nur, wenn bereits ein WordPress-Benutzer mit derselben E-Mail-Adresse existiert."
#: includes/class-m365-login-admin.php:377
msgid "Bind WordPress accounts to the Microsoft object ID"
msgstr "WordPress-Konten an die Microsoft-Objekt-ID binden"
#: includes/class-m365-login-admin.php:378
msgid "On first sign-in the immutable Microsoft object ID is stored with the user. Later sign-ins with the same e-mail but a different Microsoft identity are rejected. Strongly recommended."
msgstr "Bei der ersten Anmeldung wird die unveränderliche Microsoft-Objekt-ID am Benutzer gespeichert. Spätere Anmeldungen mit gleicher E-Mail, aber anderer Microsoft-Identität werden abgelehnt. Dringend empfohlen."
#: includes/class-m365-login-admin.php:385
msgid "Fall back to the user principal name (UPN)"
msgstr "Auf den User Principal Name (UPN) zurückgreifen"
#: includes/class-m365-login-admin.php:386
msgid "If the token contains no \"email\" claim, use the UPN (e.g. jane@contoso.com) when it is a valid e-mail address. Usually required for work accounts."
msgstr "Enthält das Token keinen „email“-Claim, wird der UPN (z. B. jane@contoso.com) verwendet, sofern er eine gültige E-Mail-Adresse ist. Für Geschäftskonten meist erforderlich."
#: includes/class-m365-login-admin.php:393
msgid "Keep users signed in (\"Remember me\")"
msgstr "Benutzer angemeldet lassen („Angemeldet bleiben“)"
#: includes/class-m365-login-admin.php:394
msgid "Issues a 14-day WordPress session instead of a browser session."
msgstr "Erstellt eine 14-tägige WordPress-Sitzung statt einer Browser-Sitzung."
#: includes/class-m365-login-admin.php:399
msgid "Allowed e-mail domains (optional)"
msgstr "Erlaubte E-Mail-Domains (optional)"
#: includes/class-m365-login-admin.php:401
msgid "One or more domains separated by commas or new lines. Leave empty to allow any domain of your tenant."
msgstr "Eine oder mehrere Domains, getrennt durch Kommas oder Zeilenumbrüche. Leer lassen, um alle Domains des Tenants zuzulassen."
#: includes/class-m365-login-admin.php:406
msgid "What the plugin does to keep sign-ins safe"
msgstr "So schützt das Plugin die Anmeldung"
#: includes/class-m365-login-admin.php:408
msgid "OpenID Connect authorization code flow with PKCE (S256) no tokens ever pass through the browser."
msgstr "OpenID Connect Authorization Code Flow mit PKCE (S256) Tokens laufen nie durch den Browser."
#: includes/class-m365-login-admin.php:409
msgid "Single-use state and nonce values bound to the browser via an HttpOnly cookie (CSRF and replay protection)."
msgstr "Einmalige State- und Nonce-Werte, per HttpOnly-Cookie an den Browser gebunden (CSRF- und Replay-Schutz)."
#: includes/class-m365-login-admin.php:410
msgid "ID token signature verified against Microsofts published signing keys; issuer, audience, tenant, expiry and nonce are checked."
msgstr "Signatur des ID-Tokens wird gegen Microsofts veröffentlichte Signaturschlüssel geprüft; Issuer, Audience, Tenant, Ablauf und Nonce werden kontrolliert."
#: includes/class-m365-login-admin.php:411
msgid "Client secret encrypted at rest; no accounts are created, no passwords are changed."
msgstr "Client Secret verschlüsselt gespeichert; es werden keine Konten angelegt und keine Passwörter geändert."
#: includes/class-m365-login-admin.php:417
msgid "Save changes"
msgstr "Änderungen speichern"
#: includes/class-m365-login-admin.php:423
msgid "Redirect URI"
msgstr "Umleitungs-URI (Redirect URI)"
#: includes/class-m365-login-admin.php:424
msgid "Register this URI in your app registration under Authentication → Web → Redirect URIs:"
msgstr "Diese URI in der App-Registrierung unter Authentifizierung → Web → Umleitungs-URIs eintragen:"
#: includes/class-m365-login-admin.php:430
msgid "Plain permalinks are active, so the callback uses a query string. If you enable pretty permalinks later, the redirect URI changes and must be updated in Entra ID."
msgstr "Einfache Permalinks sind aktiv, daher verwendet der Callback einen Query-String. Werden später sprechende Permalinks aktiviert, ändert sich die Umleitungs-URI und muss in Entra ID angepasst werden."
#: includes/class-m365-login-admin.php:433
msgid "Your site does not use HTTPS. Microsoft only accepts http:// redirect URIs for localhost; production sites must use HTTPS."
msgstr "Diese Website nutzt kein HTTPS. Microsoft akzeptiert http://-Umleitungs-URIs nur für localhost; produktive Websites benötigen HTTPS."
#: includes/class-m365-login-admin.php:438
msgid "Setup in 5 steps"
msgstr "Einrichtung in 5 Schritten"
#: includes/class-m365-login-admin.php:440
msgid "Open the Microsoft Entra admin center → App registrations → New registration."
msgstr "Microsoft Entra Admin Center öffnen → App-Registrierungen → Neue Registrierung."
#: includes/class-m365-login-admin.php:441
msgid "Choose \"Accounts in this organizational directory only\", set the platform to Web and paste the redirect URI above."
msgstr "„Nur Konten in diesem Organisationsverzeichnis“ wählen, Plattform „Web“ auswählen und die Umleitungs-URI von oben einfügen."
#: includes/class-m365-login-admin.php:442
msgid "Copy the Application (client) ID and Directory (tenant) ID from the overview page."
msgstr "Anwendungs-ID (Client) und Verzeichnis-ID (Mandant) von der Übersichtsseite kopieren."
#: includes/class-m365-login-admin.php:443
msgid "Under Certificates & secrets create a client secret and copy its value (not the ID)."
msgstr "Unter „Zertifikate & Geheimnisse“ einen geheimen Clientschlüssel erstellen und dessen Wert (nicht die ID) kopieren."
#: includes/class-m365-login-admin.php:444
msgid "Under Token configuration add the optional claim \"email\" for ID tokens (recommended), then save this page."
msgstr "Unter „Tokenkonfiguration“ den optionalen Anspruch „email“ für ID-Tokens hinzufügen (empfohlen), dann diese Seite speichern."
#: includes/class-m365-login-admin.php:446
msgid "Required API permission: openid, profile, email (delegated) granted by default."
msgstr "Benötigte API-Berechtigungen: openid, profile, email (delegiert) standardmäßig vorhanden."
#: includes/class-m365-login-admin.php:450
msgid "Shortcode"
msgstr "Shortcode"
#: includes/class-m365-login-admin.php:451
msgid "Place the button on a custom login page:"
msgstr "Button auf einer eigenen Login-Seite platzieren:"
#: includes/class-m365-login-auth.php:593
msgid "Microsoft login is not configured yet."
msgstr "Die Microsoft-Anmeldung ist noch nicht eingerichtet."
#: includes/class-m365-login-auth.php:594
msgid "The login request expired or was invalid. Please try again."
msgstr "Die Anmeldeanfrage ist abgelaufen oder ungültig. Bitte erneut versuchen."
#: includes/class-m365-login-auth.php:595
msgid "Microsoft sign-in was cancelled."
msgstr "Die Microsoft-Anmeldung wurde abgebrochen."
#: includes/class-m365-login-auth.php:596
msgid "Microsoft returned an error. Please try again."
msgstr "Microsoft hat einen Fehler gemeldet. Bitte erneut versuchen."
#: includes/class-m365-login-auth.php:597
msgid "Could not complete the sign-in with Microsoft. Please try again or contact an administrator."
msgstr "Die Anmeldung über Microsoft konnte nicht abgeschlossen werden. Bitte erneut versuchen oder einen Administrator kontaktieren."
#: includes/class-m365-login-auth.php:598
msgid "The Microsoft sign-in could not be verified."
msgstr "Die Microsoft-Anmeldung konnte nicht verifiziert werden."
#: includes/class-m365-login-auth.php:599
msgid "Your Microsoft account did not provide an e-mail address."
msgstr "Das Microsoft-Konto hat keine E-Mail-Adresse übermittelt."
#: includes/class-m365-login-auth.php:600
msgid "Your e-mail domain is not allowed to sign in here."
msgstr "Diese E-Mail-Domain ist hier nicht zur Anmeldung zugelassen."
#: includes/class-m365-login-auth.php:601
msgid "No WordPress account exists for your Microsoft e-mail address."
msgstr "Für die E-Mail-Adresse des Microsoft-Kontos existiert kein WordPress-Konto."
#: includes/class-m365-login-auth.php:602
msgid "This WordPress account is linked to a different Microsoft account. Please contact an administrator."
msgstr "Dieses WordPress-Konto ist mit einem anderen Microsoft-Konto verknüpft. Bitte einen Administrator kontaktieren."
#: includes/class-m365-login-auth.php:603
msgid "You are not allowed to sign in with this account."
msgstr "Die Anmeldung mit diesem Konto ist nicht erlaubt."
#: includes/class-m365-login-settings.php:40
msgid "Sign in with Microsoft"
msgstr "Login mit Microsoft"
#: includes/class-m365-login-settings.php:49
msgid "or"
msgstr "oder"
#: includes/class-m365-login-settings.php:176
msgid "The tenant ID must be a GUID (e.g. 1a2b3c4d-…) or one of \"organizations\", \"common\", \"consumers\"."
msgstr "Die Tenant-ID muss eine GUID (z. B. 1a2b3c4d-…) oder einer der Werte „organizations“, „common“, „consumers“ sein."
#: includes/class-m365-login-settings.php:184
msgid "The application (client) ID must be a GUID."
msgstr "Die Anwendungs-ID (Client) muss eine GUID sein."
#: includes/class-m365-login-settings.php:196
msgid "The client secret contains invalid characters."
msgstr "Das Client Secret enthält ungültige Zeichen."
#: includes/class-m365-login-settings.php:200
msgid "The client secret could not be encrypted. Is the OpenSSL extension available?"
msgstr "Das Client Secret konnte nicht verschlüsselt werden. Ist die OpenSSL-Erweiterung verfügbar?"
#: includes/class-m365-login.php:94
msgid "Settings"
msgstr "Einstellungen"
#: includes/class-m365-login.php:105
msgid "M365 Login requires PHP 7.4 or newer."
msgstr "M365 Login benötigt PHP 7.4 oder neuer."
#: includes/class-m365-login.php:106 includes/class-m365-login.php:115
msgid "Plugin activation failed"
msgstr "Plugin-Aktivierung fehlgeschlagen"
#: includes/class-m365-login.php:114
msgid "M365 Login requires the PHP OpenSSL extension (needed to verify Microsoft token signatures and to encrypt the client secret)."
msgstr "M365 Login benötigt die PHP-Erweiterung OpenSSL (zur Prüfung der Microsoft-Token-Signaturen und zur Verschlüsselung des Client Secrets)."

Binary file not shown.

View file

@ -0,0 +1,460 @@
# German translation for M365 Login.
# This file is distributed under the GPL-2.0-or-later.
msgid ""
msgstr ""
"Project-Id-Version: M365 Login 1.0.0\n"
"Report-Msgid-Bugs-To: https://github.com/friloo/wp-m365-login/issues\n"
"MIME-Version: 1.0\n"
"Content-Type: text/plain; charset=UTF-8\n"
"Content-Transfer-Encoding: 8bit\n"
"POT-Creation-Date: 2026-09-22T00:00:00+00:00\n"
"PO-Revision-Date: 2026-09-22 12:00+0000\n"
"Last-Translator: friloo\n"
"Language-Team: German\n"
"Language: de_DE_formal\n"
"Plural-Forms: nplurals=2; plural=(n != 1);\n"
"X-Generator: bin/make-pot.py\n"
"X-Domain: m365-login\n"
#: includes/class-m365-login-admin.php:63 includes/class-m365-login-admin.php:64 includes/class-m365-login-admin.php:203
msgid "M365 Login"
msgstr "M365 Login"
#: includes/class-m365-login-admin.php:102
msgid "M365 Login is active but not connected to Microsoft Entra ID yet."
msgstr "M365 Login ist aktiv, aber noch nicht mit Microsoft Entra ID verbunden."
#: includes/class-m365-login-admin.php:104
msgid "Open the settings"
msgstr "Einstellungen öffnen"
#: includes/class-m365-login-admin.php:132
msgid "Choose button icon"
msgstr "Button-Icon auswählen"
#: includes/class-m365-login-admin.php:133
msgid "Use this icon"
msgstr "Dieses Icon verwenden"
#: includes/class-m365-login-admin.php:134
msgid "Copied!"
msgstr "Kopiert!"
#: includes/class-m365-login-admin.php:135 includes/class-m365-login-admin.php:427
msgid "Copy"
msgstr "Kopieren"
#: includes/class-m365-login-admin.php:136
msgid "Testing…"
msgstr "Wird geprüft …"
#: includes/class-m365-login-admin.php:137
msgid "The tenant could not be reached. Check the tenant ID and the servers outgoing connections."
msgstr "Der Tenant ist nicht erreichbar. Bitte Tenant-ID und ausgehende Verbindungen des Servers prüfen."
#: includes/class-m365-login-admin.php:149
msgid "You are not allowed to do this."
msgstr "Dafür fehlt die Berechtigung."
#: includes/class-m365-login-admin.php:154
msgid "Please enter a valid tenant ID first."
msgstr "Bitte zuerst eine gültige Tenant-ID eingeben."
#. translators: %d: HTTP status code
#: includes/class-m365-login-admin.php:168
msgid "Microsoft answered with HTTP %d. Is the tenant ID correct?"
msgstr "Microsoft hat mit HTTP %d geantwortet. Ist die Tenant-ID korrekt?"
#. translators: %d: HTTP status code
#: includes/class-m365-login-admin.php:177
msgid "Tenant reachable. The OpenID configuration was loaded successfully."
msgstr "Tenant erreichbar. Die OpenID-Konfiguration wurde erfolgreich geladen."
#: includes/class-m365-login-admin.php:187
msgid "You are not allowed to access this page."
msgstr "Für diese Seite fehlt die Berechtigung."
#: includes/class-m365-login-admin.php:204
msgid "Let existing users sign in with their Microsoft 365 / Entra ID account."
msgstr "Bestehende Benutzer melden sich mit ihrem Microsoft 365 / Entra ID-Konto an."
#: includes/class-m365-login-admin.php:209
msgid "Connected"
msgstr "Verbunden"
#: includes/class-m365-login-admin.php:209
msgid "Setup incomplete"
msgstr "Einrichtung unvollständig"
#: includes/class-m365-login-admin.php:217
msgid "Connection"
msgstr "Verbindung"
#: includes/class-m365-login-admin.php:218
msgid "Button"
msgstr "Button"
#: includes/class-m365-login-admin.php:219
msgid "Security"
msgstr "Sicherheit"
#: includes/class-m365-login-admin.php:228
msgid "Microsoft Entra ID app registration"
msgstr "App-Registrierung in Microsoft Entra ID"
#: includes/class-m365-login-admin.php:229
msgid "Enter the values from your app registration in the Microsoft Entra admin center."
msgstr "Tragen Sie hier die Werte aus Ihrer App-Registrierung im Microsoft Entra Admin Center ein."
#: includes/class-m365-login-admin.php:232
msgid "Directory (tenant) ID"
msgstr "Verzeichnis-ID (Mandant/Tenant)"
#: includes/class-m365-login-admin.php:235
msgid "Test tenant"
msgstr "Tenant testen"
#: includes/class-m365-login-admin.php:237
msgid "Recommended: the GUID of your tenant. Only sign-ins from this tenant are accepted. \"organizations\" allows any work or school account."
msgstr "Empfohlen: die GUID Ihres Tenants. Dann werden nur Anmeldungen aus diesem Tenant akzeptiert. „organizations“ erlaubt beliebige Geschäfts-, Schul- oder Unikonten."
#: includes/class-m365-login-admin.php:242
msgid "Application (client) ID"
msgstr "Anwendungs-ID (Client)"
#: includes/class-m365-login-admin.php:247
msgid "Client secret"
msgstr "Geheimer Clientschlüssel (Client Secret)"
#: includes/class-m365-login-admin.php:249
msgid "•••••••••••• (stored, leave empty to keep)"
msgstr "•••••••••••• (gespeichert leer lassen, um zu behalten)"
#: includes/class-m365-login-admin.php:249
msgid "Paste the secret value"
msgstr "Wert des Secrets einfügen"
#: includes/class-m365-login-admin.php:250
msgid "Show secret"
msgstr "Secret anzeigen"
#: includes/class-m365-login-admin.php:255
msgid "Remove the stored secret"
msgstr "Gespeichertes Secret entfernen"
#: includes/class-m365-login-admin.php:258
msgid "Stored encrypted (AES-256-GCM, key derived from your WordPress salts) and never displayed again. Client secrets expire note the expiry date in Entra ID."
msgstr "Wird verschlüsselt gespeichert (AES-256-GCM, Schlüssel aus den WordPress-Salts abgeleitet) und nie wieder angezeigt. Client Secrets laufen ab Ablaufdatum in Entra ID notieren."
#: includes/class-m365-login-admin.php:262
msgid "Account prompt"
msgstr "Kontoauswahl"
#: includes/class-m365-login-admin.php:264
msgid "Always let the user pick an account (recommended)"
msgstr "Benutzer wählt immer ein Konto aus (empfohlen)"
#: includes/class-m365-login-admin.php:265
msgid "Use the current Microsoft session if available"
msgstr "Vorhandene Microsoft-Sitzung verwenden, falls vorhanden"
#: includes/class-m365-login-admin.php:266
msgid "Always require re-entering credentials"
msgstr "Immer erneute Eingabe der Anmeldedaten verlangen"
#: includes/class-m365-login-admin.php:275
msgid "Appearance"
msgstr "Darstellung"
#: includes/class-m365-login-admin.php:278
msgid "Live preview"
msgstr "Live-Vorschau"
#: includes/class-m365-login-admin.php:292
msgid "Button text"
msgstr "Button-Text"
#: includes/class-m365-login-admin.php:296
msgid "Divider text"
msgstr "Trennlinien-Text"
#: includes/class-m365-login-admin.php:298
msgid "Leave empty to hide the divider line."
msgstr "Leer lassen, um die Trennlinie auszublenden."
#: includes/class-m365-login-admin.php:303
msgid "Icon"
msgstr "Icon"
#: includes/class-m365-login-admin.php:306
msgid "Show an icon on the button"
msgstr "Icon auf dem Button anzeigen"
#: includes/class-m365-login-admin.php:317
msgid "Default: Microsoft logo"
msgstr "Standard: Microsoft-Logo"
#: includes/class-m365-login-admin.php:319
msgid "Choose from media library"
msgstr "Aus Mediathek wählen"
#: includes/class-m365-login-admin.php:320
msgid "Use Microsoft logo"
msgstr "Microsoft-Logo verwenden"
#: includes/class-m365-login-admin.php:322
msgid "PNG, SVG, JPG or WebP. Square images (e.g. 64×64 px) work best."
msgstr "PNG, SVG, JPG oder WebP. Quadratische Bilder (z. B. 64×64 px) eignen sich am besten."
#: includes/class-m365-login-admin.php:330
msgid "Background"
msgstr "Hintergrund"
#: includes/class-m365-login-admin.php:331
msgid "Background (hover)"
msgstr "Hintergrund (Hover)"
#: includes/class-m365-login-admin.php:332
msgid "Text colour"
msgstr "Textfarbe"
#: includes/class-m365-login-admin.php:333
msgid "Border"
msgstr "Rahmen"
#: includes/class-m365-login-admin.php:346
msgid "Corner radius"
msgstr "Eckenradius"
#: includes/class-m365-login-admin.php:350
msgid "Position on the login page"
msgstr "Position auf der Login-Seite"
#: includes/class-m365-login-admin.php:352
msgid "Below the login form"
msgstr "Unter dem Login-Formular"
#: includes/class-m365-login-admin.php:353
msgid "Above the login form"
msgstr "Über dem Login-Formular"
#: includes/class-m365-login-admin.php:359
msgid "Quick presets"
msgstr "Schnellauswahl"
#: includes/class-m365-login-admin.php:360
msgid "Microsoft dark"
msgstr "Microsoft dunkel"
#: includes/class-m365-login-admin.php:361
msgid "Microsoft light"
msgstr "Microsoft hell"
#: includes/class-m365-login-admin.php:362
msgid "Azure blue"
msgstr "Azure-Blau"
#: includes/class-m365-login-admin.php:363
msgid "WordPress blue"
msgstr "WordPress-Blau"
#: includes/class-m365-login-admin.php:371
msgid "User matching & hardening"
msgstr "Benutzerzuordnung & Härtung"
#: includes/class-m365-login-admin.php:372
msgid "Users are never created automatically. A Microsoft sign-in only succeeds when a WordPress user with the same e-mail address already exists."
msgstr "Benutzer werden nie automatisch angelegt. Eine Microsoft-Anmeldung gelingt nur, wenn bereits ein WordPress-Benutzer mit derselben E-Mail-Adresse existiert."
#: includes/class-m365-login-admin.php:377
msgid "Bind WordPress accounts to the Microsoft object ID"
msgstr "WordPress-Konten an die Microsoft-Objekt-ID binden"
#: includes/class-m365-login-admin.php:378
msgid "On first sign-in the immutable Microsoft object ID is stored with the user. Later sign-ins with the same e-mail but a different Microsoft identity are rejected. Strongly recommended."
msgstr "Bei der ersten Anmeldung wird die unveränderliche Microsoft-Objekt-ID am Benutzer gespeichert. Spätere Anmeldungen mit gleicher E-Mail, aber anderer Microsoft-Identität werden abgelehnt. Dringend empfohlen."
#: includes/class-m365-login-admin.php:385
msgid "Fall back to the user principal name (UPN)"
msgstr "Auf den User Principal Name (UPN) zurückgreifen"
#: includes/class-m365-login-admin.php:386
msgid "If the token contains no \"email\" claim, use the UPN (e.g. jane@contoso.com) when it is a valid e-mail address. Usually required for work accounts."
msgstr "Enthält das Token keinen „email“-Claim, wird der UPN (z. B. jane@contoso.com) verwendet, sofern er eine gültige E-Mail-Adresse ist. Für Geschäftskonten meist erforderlich."
#: includes/class-m365-login-admin.php:393
msgid "Keep users signed in (\"Remember me\")"
msgstr "Benutzer angemeldet lassen („Angemeldet bleiben“)"
#: includes/class-m365-login-admin.php:394
msgid "Issues a 14-day WordPress session instead of a browser session."
msgstr "Erstellt eine 14-tägige WordPress-Sitzung statt einer Browser-Sitzung."
#: includes/class-m365-login-admin.php:399
msgid "Allowed e-mail domains (optional)"
msgstr "Erlaubte E-Mail-Domains (optional)"
#: includes/class-m365-login-admin.php:401
msgid "One or more domains separated by commas or new lines. Leave empty to allow any domain of your tenant."
msgstr "Eine oder mehrere Domains, getrennt durch Kommas oder Zeilenumbrüche. Leer lassen, um alle Domains des Tenants zuzulassen."
#: includes/class-m365-login-admin.php:406
msgid "What the plugin does to keep sign-ins safe"
msgstr "So schützt das Plugin die Anmeldung"
#: includes/class-m365-login-admin.php:408
msgid "OpenID Connect authorization code flow with PKCE (S256) no tokens ever pass through the browser."
msgstr "OpenID Connect Authorization Code Flow mit PKCE (S256) Tokens laufen nie durch den Browser."
#: includes/class-m365-login-admin.php:409
msgid "Single-use state and nonce values bound to the browser via an HttpOnly cookie (CSRF and replay protection)."
msgstr "Einmalige State- und Nonce-Werte, per HttpOnly-Cookie an den Browser gebunden (CSRF- und Replay-Schutz)."
#: includes/class-m365-login-admin.php:410
msgid "ID token signature verified against Microsofts published signing keys; issuer, audience, tenant, expiry and nonce are checked."
msgstr "Signatur des ID-Tokens wird gegen Microsofts veröffentlichte Signaturschlüssel geprüft; Issuer, Audience, Tenant, Ablauf und Nonce werden kontrolliert."
#: includes/class-m365-login-admin.php:411
msgid "Client secret encrypted at rest; no accounts are created, no passwords are changed."
msgstr "Client Secret verschlüsselt gespeichert; es werden keine Konten angelegt und keine Passwörter geändert."
#: includes/class-m365-login-admin.php:417
msgid "Save changes"
msgstr "Änderungen speichern"
#: includes/class-m365-login-admin.php:423
msgid "Redirect URI"
msgstr "Umleitungs-URI (Redirect URI)"
#: includes/class-m365-login-admin.php:424
msgid "Register this URI in your app registration under Authentication → Web → Redirect URIs:"
msgstr "Diese URI in der App-Registrierung unter Authentifizierung → Web → Umleitungs-URIs eintragen:"
#: includes/class-m365-login-admin.php:430
msgid "Plain permalinks are active, so the callback uses a query string. If you enable pretty permalinks later, the redirect URI changes and must be updated in Entra ID."
msgstr "Einfache Permalinks sind aktiv, daher verwendet der Callback einen Query-String. Werden später sprechende Permalinks aktiviert, ändert sich die Umleitungs-URI und muss in Entra ID angepasst werden."
#: includes/class-m365-login-admin.php:433
msgid "Your site does not use HTTPS. Microsoft only accepts http:// redirect URIs for localhost; production sites must use HTTPS."
msgstr "Diese Website nutzt kein HTTPS. Microsoft akzeptiert http://-Umleitungs-URIs nur für localhost; produktive Websites benötigen HTTPS."
#: includes/class-m365-login-admin.php:438
msgid "Setup in 5 steps"
msgstr "Einrichtung in 5 Schritten"
#: includes/class-m365-login-admin.php:440
msgid "Open the Microsoft Entra admin center → App registrations → New registration."
msgstr "Microsoft Entra Admin Center öffnen → App-Registrierungen → Neue Registrierung."
#: includes/class-m365-login-admin.php:441
msgid "Choose \"Accounts in this organizational directory only\", set the platform to Web and paste the redirect URI above."
msgstr "„Nur Konten in diesem Organisationsverzeichnis“ wählen, Plattform „Web“ auswählen und die Umleitungs-URI von oben einfügen."
#: includes/class-m365-login-admin.php:442
msgid "Copy the Application (client) ID and Directory (tenant) ID from the overview page."
msgstr "Anwendungs-ID (Client) und Verzeichnis-ID (Mandant) von der Übersichtsseite kopieren."
#: includes/class-m365-login-admin.php:443
msgid "Under Certificates & secrets create a client secret and copy its value (not the ID)."
msgstr "Unter „Zertifikate & Geheimnisse“ einen geheimen Clientschlüssel erstellen und dessen Wert (nicht die ID) kopieren."
#: includes/class-m365-login-admin.php:444
msgid "Under Token configuration add the optional claim \"email\" for ID tokens (recommended), then save this page."
msgstr "Unter „Tokenkonfiguration“ den optionalen Anspruch „email“ für ID-Tokens hinzufügen (empfohlen), dann diese Seite speichern."
#: includes/class-m365-login-admin.php:446
msgid "Required API permission: openid, profile, email (delegated) granted by default."
msgstr "Benötigte API-Berechtigungen: openid, profile, email (delegiert) standardmäßig vorhanden."
#: includes/class-m365-login-admin.php:450
msgid "Shortcode"
msgstr "Shortcode"
#: includes/class-m365-login-admin.php:451
msgid "Place the button on a custom login page:"
msgstr "Button auf einer eigenen Login-Seite platzieren:"
#: includes/class-m365-login-auth.php:593
msgid "Microsoft login is not configured yet."
msgstr "Die Microsoft-Anmeldung ist noch nicht eingerichtet."
#: includes/class-m365-login-auth.php:594
msgid "The login request expired or was invalid. Please try again."
msgstr "Die Anmeldeanfrage ist abgelaufen oder ungültig. Bitte erneut versuchen."
#: includes/class-m365-login-auth.php:595
msgid "Microsoft sign-in was cancelled."
msgstr "Die Microsoft-Anmeldung wurde abgebrochen."
#: includes/class-m365-login-auth.php:596
msgid "Microsoft returned an error. Please try again."
msgstr "Microsoft hat einen Fehler gemeldet. Bitte erneut versuchen."
#: includes/class-m365-login-auth.php:597
msgid "Could not complete the sign-in with Microsoft. Please try again or contact an administrator."
msgstr "Die Anmeldung über Microsoft konnte nicht abgeschlossen werden. Bitte erneut versuchen oder einen Administrator kontaktieren."
#: includes/class-m365-login-auth.php:598
msgid "The Microsoft sign-in could not be verified."
msgstr "Die Microsoft-Anmeldung konnte nicht verifiziert werden."
#: includes/class-m365-login-auth.php:599
msgid "Your Microsoft account did not provide an e-mail address."
msgstr "Das Microsoft-Konto hat keine E-Mail-Adresse übermittelt."
#: includes/class-m365-login-auth.php:600
msgid "Your e-mail domain is not allowed to sign in here."
msgstr "Diese E-Mail-Domain ist hier nicht zur Anmeldung zugelassen."
#: includes/class-m365-login-auth.php:601
msgid "No WordPress account exists for your Microsoft e-mail address."
msgstr "Für die E-Mail-Adresse des Microsoft-Kontos existiert kein WordPress-Konto."
#: includes/class-m365-login-auth.php:602
msgid "This WordPress account is linked to a different Microsoft account. Please contact an administrator."
msgstr "Dieses WordPress-Konto ist mit einem anderen Microsoft-Konto verknüpft. Bitte einen Administrator kontaktieren."
#: includes/class-m365-login-auth.php:603
msgid "You are not allowed to sign in with this account."
msgstr "Die Anmeldung mit diesem Konto ist nicht erlaubt."
#: includes/class-m365-login-settings.php:40
msgid "Sign in with Microsoft"
msgstr "Login mit Microsoft"
#: includes/class-m365-login-settings.php:49
msgid "or"
msgstr "oder"
#: includes/class-m365-login-settings.php:176
msgid "The tenant ID must be a GUID (e.g. 1a2b3c4d-…) or one of \"organizations\", \"common\", \"consumers\"."
msgstr "Die Tenant-ID muss eine GUID (z. B. 1a2b3c4d-…) oder einer der Werte „organizations“, „common“, „consumers“ sein."
#: includes/class-m365-login-settings.php:184
msgid "The application (client) ID must be a GUID."
msgstr "Die Anwendungs-ID (Client) muss eine GUID sein."
#: includes/class-m365-login-settings.php:196
msgid "The client secret contains invalid characters."
msgstr "Das Client Secret enthält ungültige Zeichen."
#: includes/class-m365-login-settings.php:200
msgid "The client secret could not be encrypted. Is the OpenSSL extension available?"
msgstr "Das Client Secret konnte nicht verschlüsselt werden. Ist die OpenSSL-Erweiterung verfügbar?"
#: includes/class-m365-login.php:94
msgid "Settings"
msgstr "Einstellungen"
#: includes/class-m365-login.php:105
msgid "M365 Login requires PHP 7.4 or newer."
msgstr "M365 Login benötigt PHP 7.4 oder neuer."
#: includes/class-m365-login.php:106 includes/class-m365-login.php:115
msgid "Plugin activation failed"
msgstr "Plugin-Aktivierung fehlgeschlagen"
#: includes/class-m365-login.php:114
msgid "M365 Login requires the PHP OpenSSL extension (needed to verify Microsoft token signatures and to encrypt the client secret)."
msgstr "M365 Login benötigt die PHP-Erweiterung OpenSSL (zur Prüfung der Microsoft-Token-Signaturen und zur Verschlüsselung des Client Secrets)."

458
languages/m365-login.pot Normal file
View file

@ -0,0 +1,458 @@
# Copyright (C) 2026 friloo
# This file is distributed under the GPL-2.0-or-later.
msgid ""
msgstr ""
"Project-Id-Version: M365 Login 1.0.0\n"
"Report-Msgid-Bugs-To: https://github.com/friloo/wp-m365-login/issues\n"
"MIME-Version: 1.0\n"
"Content-Type: text/plain; charset=UTF-8\n"
"Content-Transfer-Encoding: 8bit\n"
"POT-Creation-Date: 2026-09-22T00:00:00+00:00\n"
"PO-Revision-Date: YEAR-MO-DA HO:MI+ZONE\n"
"Last-Translator: FULL NAME <EMAIL@ADDRESS>\n"
"Language-Team: LANGUAGE <LL@li.org>\n"
"X-Generator: bin/make-pot.py\n"
"X-Domain: m365-login\n"
#: includes/class-m365-login-admin.php:63 includes/class-m365-login-admin.php:64 includes/class-m365-login-admin.php:203
msgid "M365 Login"
msgstr ""
#: includes/class-m365-login-admin.php:102
msgid "M365 Login is active but not connected to Microsoft Entra ID yet."
msgstr ""
#: includes/class-m365-login-admin.php:104
msgid "Open the settings"
msgstr ""
#: includes/class-m365-login-admin.php:132
msgid "Choose button icon"
msgstr ""
#: includes/class-m365-login-admin.php:133
msgid "Use this icon"
msgstr ""
#: includes/class-m365-login-admin.php:134
msgid "Copied!"
msgstr ""
#: includes/class-m365-login-admin.php:135 includes/class-m365-login-admin.php:427
msgid "Copy"
msgstr ""
#: includes/class-m365-login-admin.php:136
msgid "Testing…"
msgstr ""
#: includes/class-m365-login-admin.php:137
msgid "The tenant could not be reached. Check the tenant ID and the servers outgoing connections."
msgstr ""
#: includes/class-m365-login-admin.php:149
msgid "You are not allowed to do this."
msgstr ""
#: includes/class-m365-login-admin.php:154
msgid "Please enter a valid tenant ID first."
msgstr ""
#. translators: %d: HTTP status code
#: includes/class-m365-login-admin.php:168
msgid "Microsoft answered with HTTP %d. Is the tenant ID correct?"
msgstr ""
#. translators: %d: HTTP status code
#: includes/class-m365-login-admin.php:177
msgid "Tenant reachable. The OpenID configuration was loaded successfully."
msgstr ""
#: includes/class-m365-login-admin.php:187
msgid "You are not allowed to access this page."
msgstr ""
#: includes/class-m365-login-admin.php:204
msgid "Let existing users sign in with their Microsoft 365 / Entra ID account."
msgstr ""
#: includes/class-m365-login-admin.php:209
msgid "Connected"
msgstr ""
#: includes/class-m365-login-admin.php:209
msgid "Setup incomplete"
msgstr ""
#: includes/class-m365-login-admin.php:217
msgid "Connection"
msgstr ""
#: includes/class-m365-login-admin.php:218
msgid "Button"
msgstr ""
#: includes/class-m365-login-admin.php:219
msgid "Security"
msgstr ""
#: includes/class-m365-login-admin.php:228
msgid "Microsoft Entra ID app registration"
msgstr ""
#: includes/class-m365-login-admin.php:229
msgid "Enter the values from your app registration in the Microsoft Entra admin center."
msgstr ""
#: includes/class-m365-login-admin.php:232
msgid "Directory (tenant) ID"
msgstr ""
#: includes/class-m365-login-admin.php:235
msgid "Test tenant"
msgstr ""
#: includes/class-m365-login-admin.php:237
msgid "Recommended: the GUID of your tenant. Only sign-ins from this tenant are accepted. \"organizations\" allows any work or school account."
msgstr ""
#: includes/class-m365-login-admin.php:242
msgid "Application (client) ID"
msgstr ""
#: includes/class-m365-login-admin.php:247
msgid "Client secret"
msgstr ""
#: includes/class-m365-login-admin.php:249
msgid "•••••••••••• (stored, leave empty to keep)"
msgstr ""
#: includes/class-m365-login-admin.php:249
msgid "Paste the secret value"
msgstr ""
#: includes/class-m365-login-admin.php:250
msgid "Show secret"
msgstr ""
#: includes/class-m365-login-admin.php:255
msgid "Remove the stored secret"
msgstr ""
#: includes/class-m365-login-admin.php:258
msgid "Stored encrypted (AES-256-GCM, key derived from your WordPress salts) and never displayed again. Client secrets expire note the expiry date in Entra ID."
msgstr ""
#: includes/class-m365-login-admin.php:262
msgid "Account prompt"
msgstr ""
#: includes/class-m365-login-admin.php:264
msgid "Always let the user pick an account (recommended)"
msgstr ""
#: includes/class-m365-login-admin.php:265
msgid "Use the current Microsoft session if available"
msgstr ""
#: includes/class-m365-login-admin.php:266
msgid "Always require re-entering credentials"
msgstr ""
#: includes/class-m365-login-admin.php:275
msgid "Appearance"
msgstr ""
#: includes/class-m365-login-admin.php:278
msgid "Live preview"
msgstr ""
#: includes/class-m365-login-admin.php:292
msgid "Button text"
msgstr ""
#: includes/class-m365-login-admin.php:296
msgid "Divider text"
msgstr ""
#: includes/class-m365-login-admin.php:298
msgid "Leave empty to hide the divider line."
msgstr ""
#: includes/class-m365-login-admin.php:303
msgid "Icon"
msgstr ""
#: includes/class-m365-login-admin.php:306
msgid "Show an icon on the button"
msgstr ""
#: includes/class-m365-login-admin.php:317
msgid "Default: Microsoft logo"
msgstr ""
#: includes/class-m365-login-admin.php:319
msgid "Choose from media library"
msgstr ""
#: includes/class-m365-login-admin.php:320
msgid "Use Microsoft logo"
msgstr ""
#: includes/class-m365-login-admin.php:322
msgid "PNG, SVG, JPG or WebP. Square images (e.g. 64×64 px) work best."
msgstr ""
#: includes/class-m365-login-admin.php:330
msgid "Background"
msgstr ""
#: includes/class-m365-login-admin.php:331
msgid "Background (hover)"
msgstr ""
#: includes/class-m365-login-admin.php:332
msgid "Text colour"
msgstr ""
#: includes/class-m365-login-admin.php:333
msgid "Border"
msgstr ""
#: includes/class-m365-login-admin.php:346
msgid "Corner radius"
msgstr ""
#: includes/class-m365-login-admin.php:350
msgid "Position on the login page"
msgstr ""
#: includes/class-m365-login-admin.php:352
msgid "Below the login form"
msgstr ""
#: includes/class-m365-login-admin.php:353
msgid "Above the login form"
msgstr ""
#: includes/class-m365-login-admin.php:359
msgid "Quick presets"
msgstr ""
#: includes/class-m365-login-admin.php:360
msgid "Microsoft dark"
msgstr ""
#: includes/class-m365-login-admin.php:361
msgid "Microsoft light"
msgstr ""
#: includes/class-m365-login-admin.php:362
msgid "Azure blue"
msgstr ""
#: includes/class-m365-login-admin.php:363
msgid "WordPress blue"
msgstr ""
#: includes/class-m365-login-admin.php:371
msgid "User matching & hardening"
msgstr ""
#: includes/class-m365-login-admin.php:372
msgid "Users are never created automatically. A Microsoft sign-in only succeeds when a WordPress user with the same e-mail address already exists."
msgstr ""
#: includes/class-m365-login-admin.php:377
msgid "Bind WordPress accounts to the Microsoft object ID"
msgstr ""
#: includes/class-m365-login-admin.php:378
msgid "On first sign-in the immutable Microsoft object ID is stored with the user. Later sign-ins with the same e-mail but a different Microsoft identity are rejected. Strongly recommended."
msgstr ""
#: includes/class-m365-login-admin.php:385
msgid "Fall back to the user principal name (UPN)"
msgstr ""
#: includes/class-m365-login-admin.php:386
msgid "If the token contains no \"email\" claim, use the UPN (e.g. jane@contoso.com) when it is a valid e-mail address. Usually required for work accounts."
msgstr ""
#: includes/class-m365-login-admin.php:393
msgid "Keep users signed in (\"Remember me\")"
msgstr ""
#: includes/class-m365-login-admin.php:394
msgid "Issues a 14-day WordPress session instead of a browser session."
msgstr ""
#: includes/class-m365-login-admin.php:399
msgid "Allowed e-mail domains (optional)"
msgstr ""
#: includes/class-m365-login-admin.php:401
msgid "One or more domains separated by commas or new lines. Leave empty to allow any domain of your tenant."
msgstr ""
#: includes/class-m365-login-admin.php:406
msgid "What the plugin does to keep sign-ins safe"
msgstr ""
#: includes/class-m365-login-admin.php:408
msgid "OpenID Connect authorization code flow with PKCE (S256) no tokens ever pass through the browser."
msgstr ""
#: includes/class-m365-login-admin.php:409
msgid "Single-use state and nonce values bound to the browser via an HttpOnly cookie (CSRF and replay protection)."
msgstr ""
#: includes/class-m365-login-admin.php:410
msgid "ID token signature verified against Microsofts published signing keys; issuer, audience, tenant, expiry and nonce are checked."
msgstr ""
#: includes/class-m365-login-admin.php:411
msgid "Client secret encrypted at rest; no accounts are created, no passwords are changed."
msgstr ""
#: includes/class-m365-login-admin.php:417
msgid "Save changes"
msgstr ""
#: includes/class-m365-login-admin.php:423
msgid "Redirect URI"
msgstr ""
#: includes/class-m365-login-admin.php:424
msgid "Register this URI in your app registration under Authentication → Web → Redirect URIs:"
msgstr ""
#: includes/class-m365-login-admin.php:430
msgid "Plain permalinks are active, so the callback uses a query string. If you enable pretty permalinks later, the redirect URI changes and must be updated in Entra ID."
msgstr ""
#: includes/class-m365-login-admin.php:433
msgid "Your site does not use HTTPS. Microsoft only accepts http:// redirect URIs for localhost; production sites must use HTTPS."
msgstr ""
#: includes/class-m365-login-admin.php:438
msgid "Setup in 5 steps"
msgstr ""
#: includes/class-m365-login-admin.php:440
msgid "Open the Microsoft Entra admin center → App registrations → New registration."
msgstr ""
#: includes/class-m365-login-admin.php:441
msgid "Choose \"Accounts in this organizational directory only\", set the platform to Web and paste the redirect URI above."
msgstr ""
#: includes/class-m365-login-admin.php:442
msgid "Copy the Application (client) ID and Directory (tenant) ID from the overview page."
msgstr ""
#: includes/class-m365-login-admin.php:443
msgid "Under Certificates & secrets create a client secret and copy its value (not the ID)."
msgstr ""
#: includes/class-m365-login-admin.php:444
msgid "Under Token configuration add the optional claim \"email\" for ID tokens (recommended), then save this page."
msgstr ""
#: includes/class-m365-login-admin.php:446
msgid "Required API permission: openid, profile, email (delegated) granted by default."
msgstr ""
#: includes/class-m365-login-admin.php:450
msgid "Shortcode"
msgstr ""
#: includes/class-m365-login-admin.php:451
msgid "Place the button on a custom login page:"
msgstr ""
#: includes/class-m365-login-auth.php:593
msgid "Microsoft login is not configured yet."
msgstr ""
#: includes/class-m365-login-auth.php:594
msgid "The login request expired or was invalid. Please try again."
msgstr ""
#: includes/class-m365-login-auth.php:595
msgid "Microsoft sign-in was cancelled."
msgstr ""
#: includes/class-m365-login-auth.php:596
msgid "Microsoft returned an error. Please try again."
msgstr ""
#: includes/class-m365-login-auth.php:597
msgid "Could not complete the sign-in with Microsoft. Please try again or contact an administrator."
msgstr ""
#: includes/class-m365-login-auth.php:598
msgid "The Microsoft sign-in could not be verified."
msgstr ""
#: includes/class-m365-login-auth.php:599
msgid "Your Microsoft account did not provide an e-mail address."
msgstr ""
#: includes/class-m365-login-auth.php:600
msgid "Your e-mail domain is not allowed to sign in here."
msgstr ""
#: includes/class-m365-login-auth.php:601
msgid "No WordPress account exists for your Microsoft e-mail address."
msgstr ""
#: includes/class-m365-login-auth.php:602
msgid "This WordPress account is linked to a different Microsoft account. Please contact an administrator."
msgstr ""
#: includes/class-m365-login-auth.php:603
msgid "You are not allowed to sign in with this account."
msgstr ""
#: includes/class-m365-login-settings.php:40
msgid "Sign in with Microsoft"
msgstr ""
#: includes/class-m365-login-settings.php:49
msgid "or"
msgstr ""
#: includes/class-m365-login-settings.php:176
msgid "The tenant ID must be a GUID (e.g. 1a2b3c4d-…) or one of \"organizations\", \"common\", \"consumers\"."
msgstr ""
#: includes/class-m365-login-settings.php:184
msgid "The application (client) ID must be a GUID."
msgstr ""
#: includes/class-m365-login-settings.php:196
msgid "The client secret contains invalid characters."
msgstr ""
#: includes/class-m365-login-settings.php:200
msgid "The client secret could not be encrypted. Is the OpenSSL extension available?"
msgstr ""
#: includes/class-m365-login.php:94
msgid "Settings"
msgstr ""
#: includes/class-m365-login.php:105
msgid "M365 Login requires PHP 7.4 or newer."
msgstr ""
#: includes/class-m365-login.php:106 includes/class-m365-login.php:115
msgid "Plugin activation failed"
msgstr ""
#: includes/class-m365-login.php:114
msgid "M365 Login requires the PHP OpenSSL extension (needed to verify Microsoft token signatures and to encrypt the client secret)."
msgstr ""

35
m365-login.php Normal file
View file

@ -0,0 +1,35 @@
<?php
/**
* Plugin Name: M365 Login
* Plugin URI: https://github.com/friloo/wp-m365-login
* Description: Adds a customisable "Sign in with Microsoft" button to the WordPress login page. Existing users are matched by e-mail address via Microsoft Entra ID (OpenID Connect, PKCE).
* Version: 1.0.0
* Requires at least: 6.0
* Requires PHP: 7.4
* Author: friloo
* Author URI: https://github.com/friloo
* License: GPL-2.0-or-later
* License URI: https://www.gnu.org/licenses/gpl-2.0.html
* Text Domain: m365-login
* Domain Path: /languages
*/
defined( 'ABSPATH' ) || exit;
define( 'M365_LOGIN_VERSION', '1.0.0' );
define( 'M365_LOGIN_FILE', __FILE__ );
define( 'M365_LOGIN_DIR', plugin_dir_path( __FILE__ ) );
define( 'M365_LOGIN_URL', plugin_dir_url( __FILE__ ) );
define( 'M365_LOGIN_OPTION', 'm365_login_settings' );
require_once M365_LOGIN_DIR . 'includes/class-m365-login-settings.php';
require_once M365_LOGIN_DIR . 'includes/class-m365-login-crypto.php';
require_once M365_LOGIN_DIR . 'includes/class-m365-login-jwt.php';
require_once M365_LOGIN_DIR . 'includes/class-m365-login-auth.php';
require_once M365_LOGIN_DIR . 'includes/class-m365-login-button.php';
require_once M365_LOGIN_DIR . 'includes/class-m365-login-admin.php';
require_once M365_LOGIN_DIR . 'includes/class-m365-login.php';
register_activation_hook( __FILE__, array( 'M365_Login', 'activate' ) );
add_action( 'plugins_loaded', array( 'M365_Login', 'instance' ) );

43
phpcs.xml.dist Normal file
View file

@ -0,0 +1,43 @@
<?xml version="1.0"?>
<ruleset name="M365 Login">
<description>WordPress Coding Standards for the M365 Login plugin.</description>
<file>.</file>
<exclude-pattern>/vendor/*</exclude-pattern>
<exclude-pattern>/node_modules/*</exclude-pattern>
<exclude-pattern>/build/*</exclude-pattern>
<exclude-pattern>/bin/*</exclude-pattern>
<arg name="extensions" value="php"/>
<arg name="colors"/>
<arg value="sp"/>
<arg name="parallel" value="8"/>
<rule ref="WordPress">
<exclude name="Generic.Commenting.DocComment.MissingShort"/>
</rule>
<rule ref="WordPress-Extra"/>
<rule ref="WordPress-Docs"/>
<config name="minimum_wp_version" value="6.0"/>
<config name="testVersion" value="7.4-"/>
<rule ref="PHPCompatibilityWP"/>
<rule ref="WordPress.WP.I18n">
<properties>
<property name="text_domain" type="array">
<element value="m365-login"/>
</property>
</properties>
</rule>
<rule ref="WordPress.NamingConventions.PrefixAllGlobals">
<properties>
<property name="prefixes" type="array">
<element value="m365_login"/>
<element value="M365_LOGIN"/>
<element value="M365_Login"/>
</property>
</properties>
</rule>
</ruleset>

116
readme.txt Normal file
View file

@ -0,0 +1,116 @@
=== M365 Login ===
Contributors: friloo
Tags: microsoft, entra id, azure ad, sso, login
Requires at least: 6.0
Tested up to: 6.9
Requires PHP: 7.4
Stable tag: 1.0.0
License: GPLv2 or later
License URI: https://www.gnu.org/licenses/gpl-2.0.html
Adds a customisable "Sign in with Microsoft" button to the login page. Existing users sign in with their Microsoft 365 / Entra ID account, matched by e-mail address.
== Description ==
**M365 Login** lets your existing WordPress users sign in with their Microsoft 365 (Microsoft Entra ID, formerly Azure AD) work or school account. It adds a button to the standard WordPress login screen and uses the OpenID Connect authorization code flow with PKCE.
The plugin is deliberately small and strict:
* **No user provisioning.** A Microsoft sign-in succeeds only when a WordPress user with the same e-mail address already exists. Nobody gets an account just by having a Microsoft login.
* **Password login stays available.** The button is an additional option; the normal form is untouched.
* **Fully customisable button.** Change the text, replace the Microsoft logo with your own icon from the media library, pick background, hover, text and border colours, adjust the corner radius, and choose whether the button appears above or below the login form with a live preview.
* **Clean settings screen** with a copy-and-paste redirect URI, a tenant connectivity test and a five-step setup guide.
* **Shortcode** `[m365_login_button]` for custom login pages.
= Security =
* OpenID Connect **authorization code flow with PKCE (S256)** tokens are exchanged server-to-server and never pass through the browser.
* **Single-use state and nonce** values, bound to the browser with an HttpOnly, SameSite cookie (CSRF and replay protection).
* The **ID token signature is verified** against Microsoft's published signing keys (JWKS, cached and refreshed on key rollover). Issuer, audience, tenant, expiry, not-before and nonce are all checked. Only RS256 is accepted.
* Optional **tenant pinning**: when a tenant GUID is configured, tokens from any other tenant are rejected.
* **Account binding**: on first sign-in the immutable Microsoft object ID is stored with the user; later sign-ins with the same e-mail but a different Microsoft identity are refused.
* Optional **e-mail domain allow-list**.
* The **client secret is encrypted at rest** (AES-256-GCM, key derived from your WordPress salts) and never displayed again.
* Every setting is sanitised, every output escaped, every admin request nonce- and capability-checked.
= Developer hooks =
* `m365_login_show_button` filter, hide the button conditionally.
* `m365_login_authorize_params` filter the parameters sent to Microsoft (e.g. `domain_hint`).
* `m365_login_match_email` filter the e-mail address used for the lookup.
* `m365_login_allow_user` filter, return `false` to block a matched user (e.g. group checks).
* `m365_login_success` action after a successful sign-in, receives the user and verified claims.
== External services ==
This plugin connects to **Microsoft identity platform (Microsoft Entra ID)** to authenticate users. It is required for the plugin's only purpose signing users in with their Microsoft account and is only contacted when a user clicks the Microsoft button or when an administrator uses the "Test tenant" button.
Endpoints used (all under `https://login.microsoftonline.com/`):
* `/{tenant}/oauth2/v2.0/authorize` the user's browser is redirected here to sign in at Microsoft. Microsoft receives the application (client) ID, the redirect URI of this site, a random state, nonce and PKCE challenge.
* `/{tenant}/oauth2/v2.0/token` the server exchanges the authorization code for an ID token. Microsoft receives the client ID, client secret, the code and the PKCE verifier.
* `/{tenant}/discovery/v2.0/keys` the server downloads Microsoft's public signing keys to verify the ID token. No user data is sent.
* `/{tenant}/v2.0/.well-known/openid-configuration` fetched only when an administrator clicks "Test tenant". No user data is sent.
The plugin receives the user's e-mail address / user principal name, display name and Microsoft object ID from Microsoft and uses them solely to find the matching WordPress account. Nothing else is stored.
Microsoft terms and privacy: [Microsoft Services Agreement](https://www.microsoft.com/servicesagreement), [Microsoft Privacy Statement](https://privacy.microsoft.com/privacystatement), [Microsoft identity platform documentation](https://learn.microsoft.com/entra/identity-platform/).
== Installation ==
1. Upload the plugin folder to `/wp-content/plugins/` or install it through the WordPress plugin screen, then activate it.
2. Go to **Settings → M365 Login** and copy the **Redirect URI** shown in the sidebar.
3. In the [Microsoft Entra admin center](https://entra.microsoft.com/) open **App registrations → New registration**. Choose *Accounts in this organizational directory only*, select the **Web** platform and paste the redirect URI.
4. From the app's overview page copy the **Application (client) ID** and the **Directory (tenant) ID** into the plugin settings.
5. Under **Certificates & secrets** create a client secret and paste its *value* into the plugin settings.
6. Under **Token configuration** add the optional claim **email** for ID tokens (recommended). The delegated permissions `openid`, `profile` and `email` are granted by default.
7. Save. The button now appears on `wp-login.php`. Customise it on the **Button** tab.
Make sure every user who should be able to sign in has the same e-mail address in WordPress as in Microsoft 365.
== Frequently Asked Questions ==
= Does the plugin create users? =
No. Users must already exist in WordPress. The e-mail address is the only link between the Microsoft account and the WordPress account. This is intentional it keeps the administrator in control of who can access the site.
= Which accounts can sign in? =
Any Microsoft account of the configured tenant whose e-mail address (or user principal name) matches an existing WordPress user. Restrict it further with the e-mail domain allow-list or the `m365_login_allow_user` filter.
= Can I use it with personal Microsoft accounts (outlook.com)? =
Set the tenant to `consumers` or `common`. Note that Microsoft does not allow query strings in redirect URIs for apps that support personal accounts, so your site must use pretty permalinks (the callback URL is then `/m365-login/callback` without a query string).
= The sign-in fails with "No WordPress account exists for your Microsoft e-mail address" =
The e-mail address in the Microsoft token does not match any WordPress user. Check the user's e-mail address in WordPress, enable the UPN fallback on the Security tab, or add the `email` optional claim in the app registration.
= Does it work with custom login pages? =
Yes, use the shortcode `[m365_login_button redirect="/dashboard/"]`.
= Does it support multisite? =
Yes. Settings are per site; a user must be a member of the site (or a super admin) to sign in.
= What happens on uninstall? =
The settings, cached data and the per-user Microsoft object ID are removed.
== Screenshots ==
1. The customised button on the WordPress login screen.
2. Settings Connection tab with redirect URI and tenant test.
3. Settings Button tab with live preview, colour pickers and icon picker.
4. Settings Security tab.
== Changelog ==
= 1.0.0 =
* Initial release.
== Upgrade Notice ==
= 1.0.0 =
Initial release.

45
uninstall.php Normal file
View file

@ -0,0 +1,45 @@
<?php
/**
* Removes all plugin data on uninstall.
*
* @package M365_Login
*/
if ( ! defined( 'WP_UNINSTALL_PLUGIN' ) ) {
exit;
}
global $wpdb;
/**
* Deletes options, transients and user meta for one site.
*/
function m365_login_uninstall_site() {
global $wpdb;
delete_option( 'm365_login_settings' );
// Transients: state records and JWKS cache.
$wpdb->query( // phpcs:ignore WordPress.DB.DirectDatabaseQuery
$wpdb->prepare(
"DELETE FROM {$wpdb->options} WHERE option_name LIKE %s OR option_name LIKE %s",
$wpdb->esc_like( '_transient_m365_login_' ) . '%',
$wpdb->esc_like( '_transient_timeout_m365_login_' ) . '%'
)
);
}
if ( is_multisite() ) {
$m365_login_site_ids = get_sites( array( 'fields' => 'ids', 'number' => 0 ) );
foreach ( $m365_login_site_ids as $m365_login_site_id ) {
switch_to_blog( $m365_login_site_id );
m365_login_uninstall_site();
restore_current_blog();
}
} else {
m365_login_uninstall_site();
}
// User meta is global.
delete_metadata( 'user', 0, '_m365_login_oid', '', true );
delete_metadata( 'user', 0, '_m365_login_last_login', '', true );