nextcloud/apps/files_external/lib/config.php

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<?php
/**
* ownCloud
*
* @author Michael Gapczynski
* @copyright 2012 Michael Gapczynski mtgap@owncloud.com
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU AFFERO GENERAL PUBLIC LICENSE
* License as published by the Free Software Foundation; either
* version 3 of the License, or any later version.
*
* This library 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 library. If not, see <http://www.gnu.org/licenses/>.
*/
/**
* Class to configure the config/mount.php and data/$user/mount.php files
*/
class OC_Mount_Config {
const MOUNT_TYPE_GLOBAL = 'global';
const MOUNT_TYPE_GROUP = 'group';
const MOUNT_TYPE_USER = 'user';
/**
* Get details on each of the external storage backends, used for the mount config UI
* If a custom UI is needed, add the key 'custom' and a javascript file with that name will be loaded
* If the configuration parameter should be secret, add a '*' to the beginning of the value
* If the configuration parameter is a boolean, add a '!' to the beginning of the value
* If the configuration parameter is optional, add a '&' to the beginning of the value
* If the configuration parameter is hidden, add a '#' to the begining of the value
* @return array
*/
public static function getBackends() {
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$backends['\OC\Files\Storage\Local']=array(
'backend' => 'Local',
'configuration' => array(
'datadir' => 'Location'));
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$backends['\OC\Files\Storage\AmazonS3']=array(
'backend' => 'Amazon S3',
'configuration' => array(
'key' => 'Key',
'secret' => '*Secret',
'bucket' => 'Bucket'));
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$backends['\OC\Files\Storage\Dropbox']=array(
'backend' => 'Dropbox',
'configuration' => array(
'configured' => '#configured',
'app_key' => 'App key',
'app_secret' => 'App secret',
'token' => '#token',
'token_secret' => '#token_secret'),
'custom' => 'dropbox');
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if(OC_Mount_Config::checkphpftp()) $backends['\OC\Files\Storage\FTP']=array(
'backend' => 'FTP',
'configuration' => array(
'host' => 'URL',
'user' => 'Username',
'password' => '*Password',
'root' => '&Root',
'secure' => '!Secure ftps://'));
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$backends['\OC\Files\Storage\Google']=array(
'backend' => 'Google Drive',
'configuration' => array(
'configured' => '#configured',
'token' => '#token',
'token_secret' => '#token secret'),
'custom' => 'google');
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$backends['\OC\Files\Storage\SWIFT']=array(
'backend' => 'OpenStack Swift',
'configuration' => array(
'host' => 'URL',
'user' => 'Username',
'token' => '*Token',
'root' => '&Root',
'secure' => '!Secure ftps://'));
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if(OC_Mount_Config::checksmbclient()) $backends['\OC\Files\Storage\SMB']=array(
'backend' => 'SMB / CIFS',
'configuration' => array(
'host' => 'URL',
'user' => 'Username',
'password' => '*Password',
'share' => 'Share',
'root' => '&Root'));
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$backends['\OC\Files\Storage\DAV']=array(
'backend' => 'ownCloud / WebDAV',
'configuration' => array(
'host' => 'URL',
'user' => 'Username',
'password' => '*Password',
'root' => '&Root',
'secure' => '!Secure https://'));
$backends['\OC\Files\Storage\SFTP']=array(
'backend' => 'SFTP',
'configuration' => array(
'host' => 'URL',
'user' => 'Username',
'password' => '*Password',
'root' => '&Root'));
return($backends);
}
/**
* Get the system mount points
* The returned array is not in the same format as getUserMountPoints()
* @return array
*/
public static function getSystemMountPoints() {
$mountPoints = self::readData(false);
$backends = self::getBackends();
$system = array();
if (isset($mountPoints[self::MOUNT_TYPE_GROUP])) {
foreach ($mountPoints[self::MOUNT_TYPE_GROUP] as $group => $mounts) {
foreach ($mounts as $mountPoint => $mount) {
// Update old classes to new namespace
if (strpos($mount['class'], 'OC_Filestorage_') !== false) {
$mount['class'] = '\OC\Files\Storage\\'.substr($mount['class'], 15);
}
// Remove '/$user/files/' from mount point
$mountPoint = substr($mountPoint, 13);
// Merge the mount point into the current mount points
if (isset($system[$mountPoint]) && $system[$mountPoint]['configuration'] == $mount['options']) {
$system[$mountPoint]['applicable']['groups']
= array_merge($system[$mountPoint]['applicable']['groups'], array($group));
} else {
$system[$mountPoint] = array(
'class' => $mount['class'],
'backend' => $backends[$mount['class']]['backend'],
'configuration' => $mount['options'],
'applicable' => array('groups' => array($group), 'users' => array()));
}
}
}
}
if (isset($mountPoints[self::MOUNT_TYPE_USER])) {
foreach ($mountPoints[self::MOUNT_TYPE_USER] as $user => $mounts) {
foreach ($mounts as $mountPoint => $mount) {
// Update old classes to new namespace
if (strpos($mount['class'], 'OC_Filestorage_') !== false) {
$mount['class'] = '\OC\Files\Storage\\'.substr($mount['class'], 15);
}
// Remove '/$user/files/' from mount point
$mountPoint = substr($mountPoint, 13);
// Merge the mount point into the current mount points
if (isset($system[$mountPoint]) && $system[$mountPoint]['configuration'] == $mount['options']) {
$system[$mountPoint]['applicable']['users']
= array_merge($system[$mountPoint]['applicable']['users'], array($user));
} else {
$system[$mountPoint] = array('class' => $mount['class'],
'backend' => $backends[$mount['class']]['backend'],
'configuration' => $mount['options'],
'applicable' => array('groups' => array(), 'users' => array($user)));
}
}
}
}
return $system;
}
/**
* Get the personal mount points of the current user
* The returned array is not in the same format as getUserMountPoints()
* @return array
*/
public static function getPersonalMountPoints() {
$mountPoints = self::readData(true);
$backends = self::getBackends();
$uid = OCP\User::getUser();
$personal = array();
if (isset($mountPoints[self::MOUNT_TYPE_USER][$uid])) {
foreach ($mountPoints[self::MOUNT_TYPE_USER][$uid] as $mountPoint => $mount) {
// Update old classes to new namespace
if (strpos($mount['class'], 'OC_Filestorage_') !== false) {
$mount['class'] = '\OC\Files\Storage\\'.substr($mount['class'], 15);
}
// Remove '/uid/files/' from mount point
$personal[substr($mountPoint, strlen($uid) + 8)] = array('class' => $mount['class'],
'backend' => $backends[$mount['class']]['backend'],
'configuration' => $mount['options']);
}
}
return $personal;
}
/**
* Add a mount point to the filesystem
* @param string Mount point
* @param string Backend class
* @param array Backend parameters for the class
* @param string MOUNT_TYPE_GROUP | MOUNT_TYPE_USER
* @param string User or group to apply mount to
* @param bool Personal or system mount point i.e. is this being called from the personal or admin page
* @return bool
*/
public static function addMountPoint($mountPoint,
$class,
$classOptions,
$mountType,
$applicable,
$isPersonal = false) {
if ($isPersonal) {
// Verify that the mount point applies for the current user
// Prevent non-admin users from mounting local storage
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if ($applicable != OCP\User::getUser() || $class == '\OC\Files\Storage\Local') {
return false;
}
$mountPoint = '/'.$applicable.'/files/'.ltrim($mountPoint, '/');
} else {
$mountPoint = '/$user/files/'.ltrim($mountPoint, '/');
}
$mount = array($applicable => array($mountPoint => array('class' => $class, 'options' => $classOptions)));
$mountPoints = self::readData($isPersonal);
// Merge the new mount point into the current mount points
if (isset($mountPoints[$mountType])) {
if (isset($mountPoints[$mountType][$applicable])) {
$mountPoints[$mountType][$applicable]
= array_merge($mountPoints[$mountType][$applicable], $mount[$applicable]);
} else {
$mountPoints[$mountType] = array_merge($mountPoints[$mountType], $mount);
}
} else {
$mountPoints[$mountType] = $mount;
}
self::writeData($isPersonal, $mountPoints);
return true;
}
/**
*
* @param string Mount point
* @param string MOUNT_TYPE_GROUP | MOUNT_TYPE_USER
* @param string User or group to remove mount from
* @param bool Personal or system mount point
* @return bool
*/
public static function removeMountPoint($mountPoint, $mountType, $applicable, $isPersonal = false) {
// Verify that the mount point applies for the current user
if ($isPersonal) {
if ($applicable != OCP\User::getUser()) {
return false;
}
$mountPoint = '/'.$applicable.'/files/'.ltrim($mountPoint, '/');
} else {
$mountPoint = '/$user/files/'.ltrim($mountPoint, '/');
}
$mountPoints = self::readData($isPersonal);
// Remove mount point
unset($mountPoints[$mountType][$applicable][$mountPoint]);
// Unset parent arrays if empty
if (empty($mountPoints[$mountType][$applicable])) {
unset($mountPoints[$mountType][$applicable]);
if (empty($mountPoints[$mountType])) {
unset($mountPoints[$mountType]);
}
}
self::writeData($isPersonal, $mountPoints);
return true;
}
/**
* Read the mount points in the config file into an array
* @param bool Personal or system config file
* @return array
*/
private static function readData($isPersonal) {
$parser = new \OC\ArrayParser();
if ($isPersonal) {
$file = OC_User::getHome(OCP\User::getUser()).'/mount.php';
} else {
$file = OC::$SERVERROOT.'/config/mount.php';
}
if (is_file($file)) {
$mountPoints = $parser->parsePHP(file_get_contents($file));
if (is_array($mountPoints)) {
return $mountPoints;
}
}
return array();
}
/**
* Write the mount points to the config file
* @param bool Personal or system config file
* @param array Mount points
*/
private static function writeData($isPersonal, $data) {
if ($isPersonal) {
$file = OC_User::getHome(OCP\User::getUser()).'/mount.php';
} else {
$file = OC::$SERVERROOT.'/config/mount.php';
}
$content = "<?php return array (\n";
if (isset($data[self::MOUNT_TYPE_GROUP])) {
$content .= "\t'group' => array (\n";
foreach ($data[self::MOUNT_TYPE_GROUP] as $group => $mounts) {
$content .= "\t\t'".$group."' => array (\n";
foreach ($mounts as $mountPoint => $mount) {
$content .= "\t\t\t'".addcslashes($mountPoint, "'")."' => ".str_replace("\n", '', var_export($mount, true)).", \n";
}
$content .= "\t\t),\n";
}
$content .= "\t),\n";
}
if (isset($data[self::MOUNT_TYPE_USER])) {
$content .= "\t'user' => array (\n";
foreach ($data[self::MOUNT_TYPE_USER] as $user => $mounts) {
$content .= "\t\t'".$user."' => array (\n";
foreach ($mounts as $mountPoint => $mount) {
$content .= "\t\t\t'".addcslashes($mountPoint, "'")."' => ".str_replace("\n", '', var_export($mount, true)).",\n";
}
$content .= "\t\t),\n";
}
$content .= "\t),\n";
}
$content .= ");\n?>";
@file_put_contents($file, $content);
}
/**
* Returns all user uploaded ssl root certificates
* @return array
*/
public static function getCertificates() {
$view = \OCP\Files::getStorage('files_external');
$path=\OCP\Config::getSystemValue('datadirectory').$view->getAbsolutePath("").'uploads/';
\OCP\Util::writeLog('files_external', 'checking path '.$path, \OCP\Util::INFO);
if ( ! is_dir($path)) {
//path might not exist (e.g. non-standard OC_User::getHome() value)
//in this case create full path using 3rd (recursive=true) parameter.
mkdir($path, 0777, true);
}
$result = array();
$handle = opendir($path);
if ( ! $handle) {
return array();
}
while (false !== ($file = readdir($handle))) {
if ($file != '.' && $file != '..') $result[] = $file;
}
return $result;
}
/**
* creates certificate bundle
*/
public static function createCertificateBundle() {
$view = \OCP\Files::getStorage("files_external");
$path = \OCP\Config::getSystemValue('datadirectory').$view->getAbsolutePath("");
$certs = OC_Mount_Config::getCertificates();
$fh_certs = fopen($path."/rootcerts.crt", 'w');
foreach ($certs as $cert) {
$file=$path.'/uploads/'.$cert;
$fh = fopen($file, "r");
$data = fread($fh, filesize($file));
fclose($fh);
if (strpos($data, 'BEGIN CERTIFICATE')) {
fwrite($fh_certs, $data);
fwrite($fh_certs, "\r\n");
}
}
fclose($fh_certs);
return true;
}
/**
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* check if smbclient is installed
*/
public static function checksmbclient() {
if(function_exists('shell_exec')) {
$output=shell_exec('which smbclient');
return (empty($output)?false:true);
}else{
return(false);
}
}
/**
* check if php-ftp is installed
*/
public static function checkphpftp() {
if(function_exists('ftp_login')) {
return(true);
}else{
return(false);
}
}
/**
* check dependencies
*/
public static function checkDependencies() {
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$l= new OC_L10N('files_external');
$txt='';
if(!OC_Mount_Config::checksmbclient()) $txt.=$l->t('<b>Warning:</b> "smbclient" is not installed. Mounting of CIFS/SMB shares is not possible. Please ask your system administrator to install it.').'<br />';
if(!OC_Mount_Config::checkphpftp()) $txt.=$l->t('<b>Warning:</b> The FTP support in PHP is not enabled or installed. Mounting of FTP shares is not possible. Please ask your system administrator to install it.').'<br />';
return($txt);
}
}