Integrate files_sharing_webapppassword

README.md

@@ -9,24 +9,34 @@
 [![Test](https://github.com/digital-blueprint/webapppassword/actions/workflows/test.yml/badge.svg)](https://github.com/digital-blueprint/webapppassword/actions/workflows/test.yml)
 
 This is a Nextcloud app to generate a temporary app password and set CORS headers to allow
-WebDAV/CalDAV access from inside a webpage.
+WebDAV/CalDAV and Share API access from inside a webpage.
 
 Place this app in **nextcloud/apps/** or install it from the [Nextcloud App Store](https://apps.nextcloud.com/apps/webapppassword).
 
 ## Configuration
 
-You can configure the allowed origins on the settings page of the application.
+You can configure the allowed origins for both wwebdav/caldav or files sharing api on the settings
+page of the application.
+
 
 ![screenshot](screenshot.png)
 
 Alternatively you can also add this setting to your `config/config.php`
 (it will be used if the origins setting on the settings page are empty).
 
-`'webapppassword.origins' => ['https://example.com'],` - array of allowed origins
+`'webapppassword.origins' => ['https://example.com'],` - array of allowed webdav/caldav origins
 
 The setting is both used for the origin of the CORS headers for the WebDAV/CalDAV requests and
 for the referrer check whether we want to generate a temporary app password.
 
+Also, you can configure in the same way the files sharing part.
+
+`'webapppassword.files_sharing_origins' => ['https://example.com'],` - array of allowed files sharing api origins
+
+Under the hood it exposes parts of the sharing api (CRUD and the preflight OPTIONS endpoint) in this url:
+https://example.com/index.php/apps/webapppassword/api/v1/shares
+
+
 ## Docker
 
 You can use this container for development and testing of the application.

appinfo/routes.php

@@ -7,5 +7,49 @@
         ['name' => 'page#index', 'url' => '/', 'verb' => 'GET'],
         ['name' => 'page#create_token', 'url' => '/create', 'verb' => 'POST'],
         ['name' => 'admin#update', 'url' => '/admin', 'verb' => 'PUT'],
+		/*
+		 * OCS Share API
+		 */
+		[
+			'name' => 'ShareAPI#getShares',
+			'url' => '/api/v1/shares',
+			'verb' => 'GET',
+		],
+		[
+			'name' => 'ShareAPI#getInheritedShares',
+			'url' => '/api/v1/shares/inherited',
+			'verb' => 'GET',
+		],
+		[
+			'name' => 'ShareAPI#createShare',
+			'url' => '/api/v1/shares',
+			'verb' => 'POST',
+		],
+		[
+			'name' => 'ShareAPI#preflighted_cors',
+			'url' => '/api/v1/shares',
+			'verb' => 'OPTIONS',
+		],
+		[
+			'name' => 'ShareAPI#pendingShares',
+			'url' => '/api/v1/shares/pending',
+			'verb' => 'GET',
+		],
+		[
+			'name' => 'ShareAPI#getShare',
+			'url' => '/api/v1/shares/{id}',
+			'verb' => 'GET',
+		],
+		[
+			'name' => 'ShareAPI#updateShare',
+			'url' => '/api/v1/shares/{id}',
+			'verb' => 'PUT',
+		],
+		[
+			'name' => 'ShareAPI#deleteShare',
+			'url' => '/api/v1/shares/{id}',
+			'verb' => 'DELETE',
+		]
+
     ],
 ];

css/admin.css

@@ -9,3 +9,7 @@
 #webapppassword-origins {
     width: 100%;
 }
+
+#files-sharing-webapppassword-origins {
+    width: 100%;
+}

js/admin.js

@@ -3,6 +3,7 @@
 document.querySelector("#webapppassword-store-origins").onclick = (e) => {
     const data = {
         origins: document.querySelector("#webapppassword-origins").value,
+        files_sharing_origins: document.querySelector("#files-sharing-webapppassword-origins").value,
     };
 
     const apiUrl = OC.generateUrl('/apps/webapppassword/admin');
@@ -19,6 +20,7 @@ document.querySelector("#webapppassword-store-origins").onclick = (e) => {
         .then(response => response.json())
         .then((data) => {
             document.querySelector("#webapppassword-origins").value = data.origins;
+            document.querySelector("#files-sharing-webapppassword-origins").value = data.files_sharing_origins;
             const successIndicator = document.querySelector("#webapppassword-saved-message");
             successIndicator.classList.add('show');
 

lib/Config/Config.php

@@ -55,4 +55,49 @@ public function setOrigins($value)
         $this->config->setAppValue('webapppassword', 'origins', $value);
         $this->logger->info('Origins were updated!');
     }
+
+    /**
+     * Serializes the allowed share api origins in a string.
+     * 
+     * @return string
+     *   List allowed share api origins separated by commas.
+     *
+     */
+    public function getFilesSharingOrigins(): string
+    {
+        $origins = $this->config->getAppValue('webapppassword', 'files_sharing_origins');
+
+        if ($origins === '') {
+        $origins = implode(',', $this->config->getSystemValue('webapppassword.files_sharing_origins', []));
+        }
+
+        if ($origins === null) {
+        $origins = '';
+        }
+
+        return implode(',', array_map('trim', explode(',', $origins)));
+    }
+
+    /**
+     * Gets an array of the defined share api allowed origins
+     *
+     * @return array
+     *   List of allowed share api origins.
+     */
+    protected function getFilesSharingOriginList()
+    {
+        return explode(',', $this->getFilesSharingOrigins());
+    }
+
+    /**
+     * Sets the defined share api allowed origins
+     *
+     * @param string $value
+     *   Comma separated List of allowed share api origins.
+     */    
+    public function setFilesSharingOrigins($value)
+    {
+        $this->config->setAppValue('webapppassword', 'files_sharing_origins', $value);
+        $this->logger->info('Files Sharing Origins were updated!');
+    }    
 }

lib/Controller/AccessControl.php

@@ -0,0 +1,80 @@
+<?php
+declare(strict_types=1);
+// SPDX-FileCopyrightText: Aleix Quintana Alsius <kinta@communia.org>
+// SPDX-License-Identifier: AGPL-3.0-or-later
+
+namespace OCA\WebAppPassword\Controller;
+
+use OCP\AppFramework\Http\DataResponse;
+use OCP\AppFramework\OCS\OCSNotFoundException;
+
+trait AccessControl {
+  /**
+   * Checks the origin of a request and modifies response.
+   *
+   * @param DataResponse $response
+   * @return DataResponse
+   * @throws NotFoundException
+   * @throws OCSBadRequestException
+   * @throws OCSException
+   * @throws OCSForbiddenException
+   * @throws OCSNotFoundException
+   * @throws InvalidPathException
+   * @suppress PhanUndeclaredClassMethod
+   */
+  protected function checkOrigin( DataResponse $response
+  ): DataResponse {
+    $origins_allowed = $this->getOriginList();
+    if (in_array('access-control-allow-origin', $response->getHeaders())) {
+      throw new OCSNotFoundException($this->l->t('Could not create share'));
+    }
+
+    $origin = $this->request->getHeader('origin');
+    if (empty($origin) || !in_array($origin, $origins_allowed, true)) {
+      throw new OCSNotFoundException($this->l->t('Could not create share'));
+    }
+
+    $response->addHeader('access-control-allow-origin', $origin);
+    $response->addHeader('access-control-allow-methods', $this->request->getHeader('access-control-request-method'));
+    $response->addHeader('access-control-allow-headers', $this->request->getHeader('access-control-request-headers'));
+    $response->addHeader('access-control-expose-headers', 'etag, dav');
+    $response->addHeader('access-control-allow-credentials', 'true');
+    return $response;
+  }
+
+  /**
+   * Serializes the allowed origins in a string.
+   * 
+   * @return string
+   *   List allowed origins separated by commas.
+   *
+   */
+  protected function getOrigins(): string
+  {
+    // TODO DI $this->config->getAppValue('files_sharing_origins', 'origins');
+    // __construct must be reimplemented as config prop in parent is private...
+    $config = \OC::$server->getConfig();
+    $origins = $config->getAppValue('webapppassword', 'files_sharing_origins');
+
+    if ($origins === '') {
+      $origins = implode(',', $config->getSystemValue('webapppassword.files_sharing_origins', []));
+    }
+
+    if ($origins === null) {
+      $origins = '';
+    }
+
+    return implode(',', array_map('trim', explode(',', $origins)));
+  }
+
+  /**
+   * Gets an array of the defined allowed origins
+   *
+   * @return array
+   *   List of allowed origins.
+   */
+  protected function getOriginList()
+  {
+    return explode(',', $this->getOrigins());
+  }
+}

lib/Controller/AdminController.php

@@ -40,12 +40,15 @@ public function __construct(
      * @return array with the updated values
      */
     public function update(
-        $origins
+        $origins,
+        $files_sharing_origins
     ) {
         $this->config->setOrigins($origins);
+        $this->config->setFilesSharingOrigins($files_sharing_origins);
 
         return [
             'origins' => $this->config->getOrigins(),
+            'files_sharing_origins' => $this->config->getFilesSharingOrigins(),
         ];
     }
 }