X-Git-Url: https://git.mxchange.org/?a=blobdiff_plain;f=src%2FProtocol%2FActivityPub.php;h=c3168f5509f98b3f5fc7ab6477f81cc32bb97d7e;hb=dbad46c37847f894312c0f1318a21f5ce3606cb0;hp=beb5be125d3df9bf98e332e19216b8f4fb2fae1b;hpb=62761e10991a5cb824582e09c0276eed130eb847;p=friendica.git

diff --git a/src/Protocol/ActivityPub.php b/src/Protocol/ActivityPub.php
index beb5be125d..c3168f5509 100644
--- a/src/Protocol/ActivityPub.php
+++ b/src/Protocol/ActivityPub.php
@@ -1,16 +1,36 @@
 <?php
 /**
- * @file src/Protocol/ActivityPub.php
+ * @copyright Copyright (C) 2020, Friendica
+ *
+ * @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 <https://www.gnu.org/licenses/>.
+ *
  */
+
 namespace Friendica\Protocol;
 
+use Friendica\Util\JsonLD;
 use Friendica\Util\Network;
 use Friendica\Core\Protocol;
 use Friendica\Model\APContact;
+use Friendica\Model\User;
 use Friendica\Util\HTTPSignature;
 
 /**
- * @brief ActivityPub Protocol class
+ * ActivityPub Protocol class
+ *
  * The ActivityPub Protocol is a message exchange protocol defined by the W3C.
  * https://www.w3.org/TR/activitypub/
  * https://www.w3.org/TR/activitystreams-core/
@@ -43,18 +63,20 @@ class ActivityPub
 		['vcard' => 'http://www.w3.org/2006/vcard/ns#',
 		'dfrn' => 'http://purl.org/macgirvin/dfrn/1.0/',
 		'diaspora' => 'https://diasporafoundation.org/ns/',
+		'litepub' => 'http://litepub.social/ns#',
 		'manuallyApprovesFollowers' => 'as:manuallyApprovesFollowers',
-		'sensitive' => 'as:sensitive', 'Hashtag' => 'as:Hashtag']];
+		'sensitive' => 'as:sensitive', 'Hashtag' => 'as:Hashtag',
+		'directMessage' => 'litepub:directMessage']];
 	const ACCOUNT_TYPES = ['Person', 'Organization', 'Service', 'Group', 'Application'];
 	/**
 	 * Checks if the web request is done for the AP protocol
 	 *
-	 * @return is it AP?
+	 * @return bool is it AP?
 	 */
 	public static function isRequest()
 	{
-		return stristr(defaults($_SERVER, 'HTTP_ACCEPT', ''), 'application/activity+json') ||
-			stristr(defaults($_SERVER, 'HTTP_ACCEPT', ''), 'application/ld+json');
+		return stristr($_SERVER['HTTP_ACCEPT'] ?? '', 'application/activity+json') ||
+			stristr($_SERVER['HTTP_ACCEPT'] ?? '', 'application/ld+json');
 	}
 
 	/**
@@ -63,14 +85,15 @@ class ActivityPub
 	 * @param string  $url content url
 	 * @param integer $uid User ID for the signature
 	 * @return array
+	 * @throws \Friendica\Network\HTTPException\InternalServerErrorException
 	 */
 	public static function fetchContent($url, $uid = 0)
 	{
 		if (!empty($uid)) {
-			return HTTPSignature::fetch($url, 1);
+			return HTTPSignature::fetch($url, $uid);
 		}
 
-		$curlResult = Network::curl($url, false, $redirects, ['accept_content' => 'application/activity+json, application/ld+json']);
+		$curlResult = Network::curl($url, false, ['accept_content' => 'application/activity+json, application/ld+json']);
 		if (!$curlResult->isSuccess() || empty($curlResult->getBody())) {
 			return false;
 		}
@@ -84,15 +107,43 @@ class ActivityPub
 		return $content;
 	}
 
+	private static function getAccountType($apcontact)
+	{
+		$accounttype = -1;
+
+		switch($apcontact['type']) {
+			case 'Person':
+				$accounttype = User::ACCOUNT_TYPE_PERSON;
+				break;
+			case 'Organization':
+				$accounttype = User::ACCOUNT_TYPE_ORGANISATION;
+				break;
+			case 'Service':
+				$accounttype = User::ACCOUNT_TYPE_NEWS;
+				break;
+			case 'Group':
+				$accounttype = User::ACCOUNT_TYPE_COMMUNITY;
+				break;
+			case 'Application':
+				$accounttype = User::ACCOUNT_TYPE_RELAY;
+				break;
+		}
+
+		return $accounttype;
+	}
+
 	/**
 	 * Fetches a profile from the given url into an array that is compatible to Probe::uri
 	 *
-	 * @param string $url profile url
+	 * @param string  $url    profile url
+	 * @param boolean $update Update the profile
 	 * @return array
+	 * @throws \Friendica\Network\HTTPException\InternalServerErrorException
+	 * @throws \ImagickException
 	 */
-	public static function probeProfile($url)
+	public static function probeProfile($url, $update = true)
 	{
-		$apcontact = APContact::getByURL($url, true);
+		$apcontact = APContact::getByURL($url, $update);
 		if (empty($apcontact)) {
 			return false;
 		}
@@ -104,8 +155,14 @@ class ActivityPub
 		$profile['url'] = $apcontact['url'];
 		$profile['addr'] = $apcontact['addr'];
 		$profile['alias'] = $apcontact['alias'];
+		$profile['following'] = $apcontact['following'];
+		$profile['followers'] = $apcontact['followers'];
+		$profile['inbox'] = $apcontact['inbox'];
+		$profile['outbox'] = $apcontact['outbox'];
+		$profile['sharedinbox'] = $apcontact['sharedinbox'];
 		$profile['photo'] = $apcontact['photo'];
-		// $profile['community']
+		$profile['account-type'] = self::getAccountType($apcontact);
+		$profile['community'] = ($profile['account-type'] == User::ACCOUNT_TYPE_COMMUNITY);
 		// $profile['keywords']
 		// $profile['location']
 		$profile['about'] = $apcontact['about'];
@@ -128,12 +185,13 @@ class ActivityPub
 	/**
 	 * Fetches activities from the outbox of a given profile and processes it
 	 *
-	 * @param string $url
+	 * @param string  $url
 	 * @param integer $uid User ID
+	 * @throws \Friendica\Network\HTTPException\InternalServerErrorException
 	 */
 	public static function fetchOutbox($url, $uid)
 	{
-		$data = self::fetchContent($url);
+		$data = self::fetchContent($url, $uid);
 		if (empty($data)) {
 			return;
 		}
@@ -154,4 +212,49 @@ class ActivityPub
 			ActivityPub\Receiver::processActivity($ldactivity, '', $uid, true);
 		}
 	}
+
+	/**
+	 * Fetch items from AP endpoints
+	 *
+	 * @param string $url  Address of the endpoint
+	 * @param integer $uid Optional user id
+	 * @return array Endpoint items
+	 */
+	public static function fetchItems(string $url, int $uid = 0)
+	{
+		$data = self::fetchContent($url, $uid);
+		if (empty($data)) {
+			return [];
+		}
+
+		if (!empty($data['orderedItems'])) {
+			$items = $data['orderedItems'];
+		} elseif (!empty($data['first']['orderedItems'])) {
+			$items = $data['first']['orderedItems'];
+		} elseif (!empty($data['first']) && is_string($data['first']) && ($data['first'] != $url)) {
+			return self::fetchItems($data['first'], $uid);
+		} else {
+			return [];
+		}
+
+		if (!empty($data['next']) && is_string($data['next'])) {
+			$items = array_merge($items, self::fetchItems($data['next'], $uid));
+		}
+
+		return $items;
+	}
+
+	/**
+	 * Checks if the given contact url does support ActivityPub
+	 *
+	 * @param string  $url    profile url
+	 * @param boolean $update true = always update, false = never update, null = update when not found or outdated
+	 * @return boolean
+	 * @throws \Friendica\Network\HTTPException\InternalServerErrorException
+	 * @throws \ImagickException
+	 */
+	public static function isSupportedByContactUrl($url, $update = null)
+	{
+		return !empty(APContact::getByURL($url, $update));
+	}
 }