1 files changed, 89 insertions, 0 deletions
diff --git a/lib/Service/Social/DiasporaProvider.php b/lib/Service/Social/DiasporaProvider.php
new file mode 100644
index 00000000..73f85792
--- /dev/null
+++ b/lib/Service/Social/DiasporaProvider.php
@@ -0,0 +1,89 @@
+<?php
+/**
+ * @copyright Copyright (c) 2020 Matthias Heinisch <nextcloud@matthiasheinisch.de>
+ *
+ * @author Matthias Heinisch <nextcloud@matthiasheinisch.de>
+ *
+ * @license GNU AGPL version 3 or any later version
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as
+ * published by the Free Software Foundation, either version 3 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 Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ *
+ */
+
+namespace OCA\Contacts\Service\Social;
+
+use OCP\Http\Client\IClientService;
+
+class DiasporaProvider implements ISocialProvider {
+
+	/** @var IClientService */
+	private $httpClient;
+
+	/** @var boolean */
+	private $looping;
+
+	public function __construct(IClientService $httpClient) {
+		$this->httpClient = $httpClient->NewClient();
+		$this->looping = false;
+	}
+	
+	/**
+	 * Returns the profile-id
+	 *
+	 * @param {string} the value from the contact's x-socialprofile
+	 *
+	 * @return string
+	 */
+	public function cleanupId(string $candidate):string {
+		try {
+			if (strpos($candidate, 'http') !== 0) {
+				$user_server = explode('@', $candidate);
+				$candidate = 'https://' . array_pop($user_server) . '/public/' . array_pop($user_server) . '.atom';
+			}
+		} catch (Exception $e) {
+			$candidate = null;
+		}
+		return $candidate;
+	}
+
+	/**
+	 * Returns the profile-picture url
+	 *
+	 * @param {string} profileId the profile-id
+	 *
+	 * @return string|null
+	 */
+	public function getImageUrl(string $profileUrl):?string {
+		try {
+			$result = $this->httpClient->get($profileUrl);
+			$htmlResult = $result->getBody();
+
+			$avatar = '/.*<logo>(.*)<\/logo>.*/';
+			if (preg_match($avatar, $htmlResult, $matches)) {
+				return (str_replace("small", "large", $matches[1]));
+			}
+			// keyword not found, second try:
+			if (!$this->looping) {
+				$this->looping = true;
+				$atom = '/.*<link rel="alternate" href="(.*.atom)".*/';
+				if (preg_match($atom, $htmlResult, $matches)) {
+					return ($this->getImageUrl($matches[1]));
+				}
+			}
+			return null;
+		} catch (Exception $e) {
+			return null;
+		}
+	}
+}