BlogPostConnector::canRead

public function canRead($userId)
{
	if($this->canRead !== null)
	{
		return $this->canRead;
	}
	if(!Loader::includeModule('socialnetwork'))
	{
		return false;
	}
	$cacheTtl = 2592000;
	$cacheId = 'blog_post_socnet_general_' . $this->entityId . '_' . LANGUAGE_ID. '_diskconnector';
	$timezoneOffset = CTimeZone::getOffset();
	if($timezoneOffset != 0)
	{
		$cacheId .= "_" . $timezoneOffset;
	}
	$cacheDir = '/blog/socnet_post/gen/' . intval($this->entityId / 100) . '/' . $this->entityId;

	$cache = new CPHPCache;
	if($cache->initCache($cacheTtl, $cacheId, $cacheDir))
	{
		$post = $cache->getVars();
	}
	else
	{
		$cache->startDataCache();

		$queryPost = CBlogPost::getList(array(), array("ID" => $this->entityId), false, false, array(
				"ID",
				"BLOG_ID",
				"PUBLISH_STATUS",
				"TITLE",
				"AUTHOR_ID",
				"ENABLE_COMMENTS",
				"NUM_COMMENTS",
				"VIEWS",
				"CODE",
				"MICRO",
				"DETAIL_TEXT",
				"DATE_PUBLISH",
				"CATEGORY_ID",
				"HAS_SOCNET_ALL",
				"HAS_TAGS",
				"HAS_IMAGES",
				"HAS_PROPS",
				"HAS_COMMENT_IMAGES"
			));
		$post = $queryPost->fetch();

		if (!empty($post['DETAIL_TEXT']))
		{
			$post['DETAIL_TEXT'] = BitrixMainTextEmoji::decode($post['DETAIL_TEXT']);
		}

		$cache->endDataCache($post);
	}
	if(!$post)
	{
		$this->canRead = false;
		return false;
	}

	$this->canRead = CBlogPost::getSocNetPostPerms($this->entityId, true, $userId, $post["AUTHOR_ID"]) >= BLOG_PERMS_READ;

	if (!$this->canRead)
	{
		$perms = CBlogPost::getSocNetPerms($this->entityId);
		$this->canRead = (
			is_array($perms)
			&& !empty($perms['UP'])
		);

		if(
			!$this->canRead
			&& !empty($perms['SG'])
		)
		{
			$sonetGroupsIdList = array_unique(array_keys($perms['SG']));
			if (
				!empty($sonetGroupsIdList)
				&& Loader::includeModule('socialnetwork')
			)
			{
				$res = WorkgroupTable::getList([
					'filter' => [
						'@ID' => $sonetGroupsIdList,
						'=LANDING' => 'Y',
						'=ACTIVE' => 'Y'
					],
					'limit' => 1
				]);
				if ($res->fetch())
				{
					$this->canRead = true;
				}
			}
		}
	}

	return $this->canRead;
}