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<?php
/**
* SPDX-FileCopyrightText: 2016-2024 Nextcloud GmbH and Nextcloud contributors
* SPDX-FileCopyrightText: 2016 ownCloud, Inc.
* SPDX-License-Identifier: AGPL-3.0-only
*/
namespace OC\Share;
class Helper extends \OC\Share\Constants {
/**
* get default expire settings defined by the admin
* @return array contains 'defaultExpireDateSet', 'enforceExpireDate', 'expireAfterDays'
*/
public static function getDefaultExpireSetting() {
$config = \OC::$server->getConfig();
$defaultExpireSettings = ['defaultExpireDateSet' => false];
// get default expire settings
$defaultExpireDate = $config->getAppValue('core', 'shareapi_default_expire_date', 'no');
if ($defaultExpireDate === 'yes') {
$enforceExpireDate = $config->getAppValue('core', 'shareapi_enforce_expire_date', 'no');
$defaultExpireSettings['defaultExpireDateSet'] = true;
$defaultExpireSettings['expireAfterDays'] = (int)$config->getAppValue('core', 'shareapi_expire_after_n_days', '7');
$defaultExpireSettings['enforceExpireDate'] = $enforceExpireDate === 'yes';
}
return $defaultExpireSettings;
}
public static function calcExpireDate() {
$expireAfter = \OC\Share\Share::getExpireInterval() * 24 * 60 * 60;
$expireAt = time() + $expireAfter;
$date = new \DateTime();
$date->setTimestamp($expireAt);
$date->setTime(0, 0, 0);
//$dateString = $date->format('Y-m-d') . ' 00:00:00';
return $date;
}
/**
* calculate expire date
* @param array $defaultExpireSettings contains 'defaultExpireDateSet', 'enforceExpireDate', 'expireAfterDays'
* @param int $creationTime timestamp when the share was created
* @param int $userExpireDate expire timestamp set by the user
* @return mixed integer timestamp or False
*/
public static function calculateExpireDate($defaultExpireSettings, $creationTime, $userExpireDate = null) {
$expires = false;
$defaultExpires = null;
if (!empty($defaultExpireSettings['defaultExpireDateSet'])) {
$defaultExpires = $creationTime + $defaultExpireSettings['expireAfterDays'] * 86400;
}
if (isset($userExpireDate)) {
// if the admin decided to enforce the default expire date then we only take
// the user defined expire date of it is before the default expire date
if ($defaultExpires && !empty($defaultExpireSettings['enforceExpireDate'])) {
$expires = min($userExpireDate, $defaultExpires);
} else {
$expires = $userExpireDate;
}
} elseif ($defaultExpires && !empty($defaultExpireSettings['enforceExpireDate'])) {
$expires = $defaultExpires;
}
return $expires;
}
/**
* Strips away a potential file names and trailing slashes:
* - http://localhost
* - http://localhost/
* - http://localhost/index.php
* - http://localhost/index.php/s/{shareToken}
*
* all return: http://localhost
*
* @param string $remote
* @return string
*/
protected static function fixRemoteURL($remote) {
$remote = str_replace('\\', '/', $remote);
if ($fileNamePosition = strpos($remote, '/index.php')) {
$remote = substr($remote, 0, $fileNamePosition);
}
$remote = rtrim($remote, '/');
return $remote;
}
/**
* check if two federated cloud IDs refer to the same user
*
* @param string $user1
* @param string $server1
* @param string $user2
* @param string $server2
* @return bool true if both users and servers are the same
*/
public static function isSameUserOnSameServer($user1, $server1, $user2, $server2) {
$normalizedServer1 = strtolower(\OC\Share\Share::removeProtocolFromUrl($server1));
$normalizedServer2 = strtolower(\OC\Share\Share::removeProtocolFromUrl($server2));
if (rtrim($normalizedServer1, '/') === rtrim($normalizedServer2, '/')) {
// FIXME this should be a method in the user management instead
\OCP\Util::emitHook(
'\OCA\Files_Sharing\API\Server2Server',
'preLoginNameUsedAsUserName',
['uid' => &$user1]
);
\OCP\Util::emitHook(
'\OCA\Files_Sharing\API\Server2Server',
'preLoginNameUsedAsUserName',
['uid' => &$user2]
);
if ($user1 === $user2) {
return true;
}
}
return false;
}
public static function getTokenLength(): int {
$config = \OCP\Server::get(\OCP\IAppConfig::class);
$tokenLength = $config->getValueInt('core', 'shareapi_token_length', self::DEFAULT_TOKEN_LENGTH);
$tokenLength = $tokenLength ?: self::DEFAULT_TOKEN_LENGTH;
// Token length should be within the defined min and max limits
return max(self::MIN_TOKEN_LENGTH, min($tokenLength, self::MAX_TOKEN_LENGTH));
}
}
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