X-Git-Url: https://git.mxchange.org/?a=blobdiff_plain;f=src%2FUtil%2FJsonLD.php;h=0a4d5a0b55bf40808e891f81a1d832e0377ca3c1;hb=9c86578755e62f16b972debf07a83c424b626446;hp=bed7a67d60a01eeccf58bc6a312f6f363541f4b6;hpb=1395bdc1881e8e8ecac3823f62648d250fcf7874;p=friendica.git

diff --git a/src/Util/JsonLD.php b/src/Util/JsonLD.php
index bed7a67d60..0a4d5a0b55 100644
--- a/src/Util/JsonLD.php
+++ b/src/Util/JsonLD.php
@@ -1,27 +1,76 @@
 <?php
 /**
- * @file src/Util/JsonLD.php
+ * @copyright Copyright (C) 2010-2023, the Friendica project
+ *
+ * @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\Util;
 
-use Friendica\Core\Cache;
+use Friendica\Core\Cache\Enum\Duration;
 use Friendica\Core\Logger;
 use Exception;
+use Friendica\Core\System;
+use Friendica\DI;
 
 /**
- * @brief This class contain methods to work with JsonLD data
+ * This class contain methods to work with JsonLD data
  */
 class JsonLD
 {
 	/**
-	 * @brief Loader for LD-JSON validation
+	 * Loader for LD-JSON validation
 	 *
 	 * @param $url
 	 *
-	 * @return the loaded data
+	 * @return mixed the loaded data
+	 * @throws \JsonLdException
 	 */
 	public static function documentLoader($url)
 	{
+		switch ($url) {
+			case 'https://w3id.org/security/v1':
+				$url = DI::basePath() . '/static/security-v1.jsonld';
+				break;
+			case 'https://w3id.org/identity/v1':
+				$url = DI::basePath() . '/static/identity-v1.jsonld';
+				break;
+			case 'https://www.w3.org/ns/activitystreams':
+				$url = DI::basePath() . '/static/activitystreams.jsonld';
+				break;
+			case 'https://funkwhale.audio/ns':
+				$url = DI::basePath() . '/static/funkwhale.audio.jsonld';
+				break;
+			default:
+				switch (parse_url($url, PHP_URL_PATH)) {
+					case '/schemas/litepub-0.1.jsonld';
+						$url = DI::basePath() . '/static/litepub-0.1.jsonld';
+						break;
+					case '/apschema/v1.2':
+					case '/apschema/v1.9':
+					case '/apschema/v1.10':
+						$url = DI::basePath() . '/static/apschema.jsonld';
+						break;
+					default:
+						Logger::info('Got url', ['url' =>$url]);
+						break;
+				}
+		}
+
 		$recursion = 0;
 
 		$x = debug_backtrace();
@@ -34,26 +83,27 @@ class JsonLD
 		}
 
 		if ($recursion > 5) {
-			Logger::log('jsonld bomb detected at: ' . $url);
-			exit();
+			Logger::error('jsonld bomb detected at: ' . $url);
+			System::exit();
 		}
 
-		$result = Cache::get('documentLoader:' . $url);
+		$result = DI::cache()->get('documentLoader:' . $url);
 		if (!is_null($result)) {
 			return $result;
 		}
 
 		$data = jsonld_default_document_loader($url);
-		Cache::set('documentLoader:' . $url, $data, Cache::DAY);
+		DI::cache()->set('documentLoader:' . $url, $data, Duration::DAY);
 		return $data;
 	}
 
 	/**
-	 * @brief Normalises a given JSON array
+	 * Normalises a given JSON array
 	 *
 	 * @param array $json
 	 *
-	 * @return normalized JSON string
+	 * @return mixed|bool normalized JSON string
+	 * @throws Exception
 	 */
 	public static function normalize($json)
 	{
@@ -66,20 +116,31 @@ class JsonLD
 		}
 		catch (Exception $e) {
 			$normalized = false;
-			Logger::log('normalise error:' . print_r($e, true), Logger::DEBUG);
+			$messages = [];
+			$currentException = $e;
+			do {
+				$messages[] = $currentException->getMessage();
+			} while($currentException = $currentException->getPrevious());
+
+			Logger::warning('JsonLD normalize error');
+			Logger::notice('JsonLD normalize error', ['messages' => $messages]);
+			Logger::info('JsonLD normalize error', ['trace' => $e->getTraceAsString()]);
+			Logger::debug('JsonLD normalize error', ['jsonobj' => $jsonobj]);
 		}
 
 		return $normalized;
 	}
 
 	/**
-	 * @brief Compacts a given JSON array
+	 * Compacts a given JSON array
 	 *
 	 * @param array $json
+	 * @param bool  $logfailed
 	 *
-	 * @return comacted JSON array
+	 * @return array Compacted JSON array
+	 * @throws Exception
 	 */
-	public static function compact($json)
+	public static function compact($json, bool $logfailed = true): array
 	{
 		jsonld_set_document_loader('Friendica\Util\JsonLD::documentLoader');
 
@@ -90,55 +151,103 @@ class JsonLD
 			'dfrn' => (object)['@id' => 'http://purl.org/macgirvin/dfrn/1.0/', '@type' => '@id'],
 			'diaspora' => (object)['@id' => 'https://diasporafoundation.org/ns/', '@type' => '@id'],
 			'ostatus' => (object)['@id' => 'http://ostatus.org#', '@type' => '@id'],
-			'dc' => (object)['@id' => 'http://purl.org/dc/terms/', '@type' => '@id']];
+			'dc' => (object)['@id' => 'http://purl.org/dc/terms/', '@type' => '@id'],
+			'toot' => (object)['@id' => 'http://joinmastodon.org/ns#', '@type' => '@id'],
+			'litepub' => (object)['@id' => 'http://litepub.social/ns#', '@type' => '@id'],
+			'sc' => (object)['@id' => 'http://schema.org#', '@type' => '@id'],
+			'pt' => (object)['@id' => 'https://joinpeertube.org/ns#', '@type' => '@id'],
+			'mobilizon' => (object)['@id' => 'https://joinmobilizon.org/ns#', '@type' => '@id'],
+			'fedibird' => (object)['@id' => 'http://fedibird.com/ns#', '@type' => '@id'],
+			'misskey' => (object)['@id' => 'https://misskey-hub.net/ns#', '@type' => '@id'],
+		];
 
-		$jsonobj = json_decode(json_encode($json, JSON_UNESCAPED_SLASHES | JSON_UNESCAPED_UNICODE));
+		$orig_json = $json;
+
+		// Preparation for adding possibly missing content to the context
+		if (!empty($json['@context']) && is_string($json['@context'])) {
+			$json['@context'] = [$json['@context']];
+		}
+
+		if (!empty($json['@context']) && is_array($json['@context'])) {
+			// Remove empty entries from the context (a problem with WriteFreely)
+			$json['@context'] = array_filter($json['@context']);
 
+			// Workaround for servers with missing context
+			// See issue https://github.com/nextcloud/social/issues/330
+			if (!in_array('https://w3id.org/security/v1', $json['@context'])) {
+				$json['@context'][] = 'https://w3id.org/security/v1';
+			}
+
+			// Issue 12419: Workaround for GoToSocial
+			$pos = array_search('http://joinmastodon.org/ns', $json['@context']);
+			if (is_int($pos)) {
+				$json['@context'][$pos] = ['toot' => 'http://joinmastodon.org/ns#'];
+			}
+		}
+
+		// Bookwyrm transmits "id" fields with "null", which isn't allowed.
+		array_walk_recursive($json, function (&$value, $key) {
+			if ($key == 'id' && is_null($value)) {
+				$value = '';
+			}
+		});
+
+		$jsonobj = json_decode(json_encode($json, JSON_UNESCAPED_SLASHES | JSON_UNESCAPED_UNICODE));
 
 		try {
 			$compacted = jsonld_compact($jsonobj, $context);
 		}
 		catch (Exception $e) {
 			$compacted = false;
-			Logger::log('compacting error:' . print_r($e, true), Logger::DEBUG);
+			Logger::notice('compacting error', ['msg' => $e->getMessage(), 'previous' => $e->getPrevious(), 'line' => $e->getLine()]);
+			if ($logfailed && DI::config()->get('debug', 'ap_log_failure')) {
+				$tempfile = tempnam(System::getTempPath(), 'failed-jsonld');
+				file_put_contents($tempfile, json_encode(['json' => $orig_json, 'callstack' => System::callstack(20), 'msg' => $e->getMessage(), 'previous' => $e->getPrevious()], JSON_UNESCAPED_SLASHES | JSON_UNESCAPED_UNICODE | JSON_PRETTY_PRINT));
+				Logger::notice('Failed message stored', ['file' => $tempfile]);
+			}
+		}
+
+		$json = json_decode(json_encode($compacted, JSON_UNESCAPED_SLASHES | JSON_UNESCAPED_UNICODE), true);
+
+		if ($json === false) {
+			Logger::notice('JSON encode->decode failed', ['orig_json' => $orig_json, 'compacted' => $compacted]);
+			$json = [];
 		}
 
-		return json_decode(json_encode($compacted, JSON_UNESCAPED_SLASHES | JSON_UNESCAPED_UNICODE), true);
+		return $json;
 	}
 
 	/**
-	 * @brief Fetches an element array from a JSON array
+	 * Fetches an element array from a JSON array
 	 *
 	 * @param $array
 	 * @param $element
 	 * @param $key
 	 *
-	 * @return fetched element array
+	 * @return array fetched element
 	 */
-	public static function fetchElementArray($array, $element, $key = '@id')
+	public static function fetchElementArray($array, $element, $key = null, $type = null, $type_value = null)
 	{
-		if (empty($array)) {
-			return null;
-		}
-
 		if (!isset($array[$element])) {
 			return null;
 		}
 
 		// If it isn't an array yet, make it to one
-		if (!is_int(key($array[$element]))) {
+		if (!is_array($array[$element]) || !is_int(key($array[$element]))) {
 			$array[$element] = [$array[$element]];
 		}
 
 		$elements = [];
 
 		foreach ($array[$element] as $entry) {
-			if (!is_array($entry)) {
-				$elements[] = $entry;
-			} elseif (!empty($entry[$key])) {
-				$elements[] = $entry[$key];
-			} elseif (!empty($entry) || !is_array($entry)) {
-				$elements[] = $entry;
+			if (!is_array($entry) || is_null($key)) {
+				$item = $entry;
+			} elseif (isset($entry[$key])) {
+				$item = $entry[$key];
+			}
+
+			if (isset($item) && (is_null($type) || is_null($type_value) || isset($item[$type]) && $item[$type] == $type_value)) {
+				$elements[] = $item;
 			}
 		}
 
@@ -146,7 +255,7 @@ class JsonLD
 	}
 
 	/**
-	 * @brief Fetches an element from a JSON array
+	 * Fetches an element from a JSON array
 	 *
 	 * @param $array
 	 * @param $element
@@ -154,7 +263,7 @@ class JsonLD
 	 * @param $type
 	 * @param $type_value
 	 *
-	 * @return fetched element
+	 * @return string fetched element
 	 */
 	public static function fetchElement($array, $element, $key = '@id', $type = null, $type_value = null)
 	{