Oauth IMAP mail receivers for G Suite and Azure AD

.gitignore

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+dist/
+vendor/
+.gh_token
+*.min.*

.travis.yml

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+language: php
+php:
+  - 7.2
+  - 7.4
+
+before_script:
+  - composer self-update
+  - composer install --optimize-autoloader --prefer-dist --no-interaction --no-progress --no-suggest
+
+script:
+  - vendor/bin/robo --no-interaction code:cs --strict
+
+cache:
+  directories:
+    - $HOME/.composer/cache

README.md

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+# Oauth IMAP client for GLPI
+
+This plugins provides IMAP SASL XOAUTH2 authentication mechanism for mail receivers.
+
+Currently implemented for:
+
+ * [Google (Gmail)](https://developers.google.com/gmail/imap/xoauth2-protocol)
+ * [Microsoft Azure (Microsoft 365)](https://docs.microsoft.com/en-us/exchange/client-developer/legacy-protocols/how-to-authenticate-an-imap-pop-smtp-application-by-using-oauth)
+
+![Configuration page](docs/screenshots/config.png)
+![mail receiver setup](docs/screenshots/config_oauth_mailcollector.png)
+
+## Documentation
+
+We maintain a detailed documentation here -> [Documentation](https://glpi-plugins.readthedocs.io/en/latest/oauthimap/index.html)
+
+## Contact
+
+For notices about major changes and general discussion of oauthimap, subscribe to the [/r/glpi](https://www.reddit.com/r/glpi/) subreddit.
+You can also chat with us via IRC in [#glpi on freenode](http://webchat.freenode.net/?channels=glpi) or [@glpi on Telegram](https://t.me/glpien).
+
+## Professional Services
+
+![GLPI Network](docs/glpi_network.png "GLPI network")
+
+The GLPI Network services are available through our [Partner's Network](http://www.teclib-edition.com/en/partners/). We provide special training, bug fixes with editor subscription, contributions for new features, and more.
+
+Obtain a personalized service experience, associated with benefits and opportunities.
+
+## Contributing
+
+* Open a ticket for each bug/feature so it can be discussed
+* Follow [development guidelines](http://glpi-developer-documentation.readthedocs.io/en/latest/plugins/index.html)
+* Refer to [GitFlow](http://git-flow.readthedocs.io/) process for branching
+* Work on a new branch on your own fork
+* Open a PR that will be reviewed by a developer
+
+## Copying
+
+* **Code**: you can redistribute it and/or modify
+    it under the terms of the GNU General Public License ([GPL-2.0](https://www.gnu.org/licenses/gpl-2.0.en.html)).

RoboFile.php

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+<?php
+/**
+ -------------------------------------------------------------------------
+ oauthimap plugin for GLPI
+ Copyright (C) 2018-2020 by the oauthimap Development Team.
+ -------------------------------------------------------------------------
+
+ LICENSE
+
+ This file is part of oauthimap.
+
+ oauthimap 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.
+
+ oauthimap 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 oauthimap. If not, see <http://www.gnu.org/licenses/>.
+ --------------------------------------------------------------------------
+ */
+
+require_once 'vendor/autoload.php';
+
+class RoboFile extends Glpi\Tools\RoboFile
+{
+   //Own plugin's robo stuff
+}

ajax/dropdownAuthorization.php

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+<?php
+/**
+ -------------------------------------------------------------------------
+ oauthimap plugin for GLPI
+ Copyright (C) 2018-2020 by the oauthimap Development Team.
+ -------------------------------------------------------------------------
+
+ LICENSE
+
+ This file is part of oauthimap.
+
+ oauthimap 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.
+
+ oauthimap 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 oauthimap. If not, see <http://www.gnu.org/licenses/>.
+ --------------------------------------------------------------------------
+ */
+
+include ("../../../inc/includes.php");
+header("Content-Type: text/html; charset=UTF-8");
+Html::header_nocache();
+
+Session::checkLoginUser();
+
+global $DB;
+
+$iterator = $DB->request(
+   [
+      'FROM'   => PluginOauthimapAuthorization::getTable(),
+      'WHERE'  => [
+         PluginOauthimapApplication::getForeignKeyField() => $_POST['application_id'] ?? null,
+      ],
+   ]
+);
+$authorizations = [
+   '-1' => __('Create authorization for another user', 'oauthimap')
+];
+$value = -1;
+foreach ($iterator as $row) {
+   $authorizations[$row['id']] = $row['email'];
+   if (array_key_exists('selected', $_POST) && $row['email'] == $_POST['selected']) {
+      $value = $row['id'];
+   }
+}
+
+Dropdown::showFromArray(
+   PluginOauthimapAuthorization::getForeignKeyField(),
+   $authorizations,
+   [
+      'display_emptychoice' => false,
+      'value'               => $value,
+   ]
+);

composer.json

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+{
+    "require": {
+        "php": "^7.2",
+        "league/oauth2-google": "^3.0",
+        "thenetworg/oauth2-azure": "^1.4"
+    },
+    "require-dev": {
+        "glpi-project/tools": "^0.1"
+    },
+    "config": {
+        "optimize-autoloader": true,
+        "platform": {
+            "php": "7.2.0"
+        },
+        "sort-packages": true
+    }
+}