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|
<?php
require_once dirname(__FILE__) . '/sql.php';
/**
* Permission for read access.
*/
define('VFS_FLAG_READ', 1);
/**
* Permission for read access.
*/
define('VFS_FLAG_WRITE', 2);
/**
* Multi User VFS implementation for PHP's PEAR database
* abstraction layer.
*
* Required values for $params:<pre>
* 'phptype' The database type (ie. 'pgsql', 'mysql', etc.).</pre>
*
* Optional values:<pre>
* 'table' The name of the vfs table in 'database'. Defaults to
* 'horde_muvfs'.</pre>
*
* Required by some database implementations:<pre>
* 'hostspec' The hostname of the database server.
* 'protocol' The communication protocol ('tcp', 'unix', etc.).
* 'database' The name of the database.
* 'username' The username with which to connect to the database.
* 'password' The password associated with 'username'.
* 'options' Additional options to pass to the database.
* 'tty' The TTY on which to connect to the database.
* 'port' The port on which to connect to the database.</pre>
*
* Known Issues:
* Delete is not recusive, so files and folders that used to be in a folder
* that gets deleted live forever in the database, or re-appear when the folder
* is recreated.
* Rename has the same issue, so files are lost if a folder is renamed.
*
* The table structure for the VFS can be found in
* data/muvfs.sql.
*
* Database specific notes:
*
* MSSQL:
* - The vfs_data field must be of type IMAGE.
* - You need the following php.ini settings:
* <code>
* ; Valid range 0 - 2147483647. Default = 4096.
* mssql.textlimit = 0 ; zero to pass through
*
* ; Valid range 0 - 2147483647. Default = 4096.
* mssql.textsize = 0 ; zero to pass through
* </code>
*
* $Horde: framework/VFS/lib/VFS/musql.php,v 1.1.2.4 2009/01/06 15:23:47 jan Exp $
*
* Copyright 2002-2009 The Horde Project (http://www.horde.org/)
*
* See the enclosed file COPYING for license information (LGPL). If you
* did not receive this file, see http://www.fsf.org/copyleft/lgpl.html.
*
* @author Chuck Hagenbuch <chuck@horde.org>
* @author Mike Cochrane <mike@graftonhall.co.nz>
* @package VFS
*/
class VFS_musql extends VFS_sql {
/**
* List of permissions and if they can be changed in this VFS
*
* @var array
*/
var $_permissions = array(
'owner' => array('read' => false, 'write' => false, 'execute' => false),
'group' => array('read' => false, 'write' => false, 'execute' => false),
'all' => array('read' => true, 'write' => true, 'execute' => false)
);
/**
* Stores a file in the VFS from raw data.
*
* @param string $path The path to store the file in.
* @param string $name The filename to use.
* @param string $data The file data.
* @param boolean $autocreate Automatically create directories?
*
* @return mixed True on success or a PEAR_Error object on failure.
*/
function writeData($path, $name, $data, $autocreate = false)
{
$conn = $this->_connect();
if (PEAR::isError($conn)) {
return $conn;
}
/* Make sure we have write access to this and all parent paths. */
if ($path != '') {
$paths = explode('/', $path);
$path_name = array_pop($paths);
if (!$this->isFolder(implode('/', $paths), $path_name)) {
if (!$autocreate) {
return PEAR::raiseError(
sprintf(_("Folder \"%s\" does not exist"), $path),
'horde.error');
} else {
$result = $this->autocreatePath($path);
if (is_a($result, 'PEAR_Error')) {
return $result;
}
}
}
$paths[] = $path_name;
$previous = '';
foreach ($paths as $thispath) {
$sql = sprintf('SELECT vfs_owner, vfs_perms FROM %s
WHERE vfs_path = ? AND vfs_name= ?',
$this->_params['table']);
$this->log($sql, PEAR_LOG_DEBUG);
$results = $this->_db->getAll($sql, array($previous, $thispath));
if (is_a($results, 'PEAR_Error')) {
$this->log($results, PEAR_LOG_ERR);
return $results;
}
if (!is_array($results) || count($results) < 1) {
return PEAR::raiseError(_("Unable to create VFS file."));
}
$allowed = false;
foreach ($results as $result) {
if ($result[0] == $this->_params['user'] ||
$result[1] & VFS_FLAG_WRITE) {
$allowed = true;
break;
}
}
if (!$allowed) {
return PEAR::raiseError(_("Access denied creating VFS file."));
}
$previous = $thispath;
}
}
return parent::writeData($path, $name, $data, $autocreate);
}
/**
* Deletes a file from the VFS.
*
* @param string $path The path to store the file in.
* @param string $name The filename to use.
*
* @return mixed True on success or a PEAR_Error object on failure.
*/
function deleteFile($path, $name)
{
$conn = $this->_connect();
if (PEAR::isError($conn)) {
return $conn;
}
$sql = sprintf('SELECT vfs_id, vfs_owner, vfs_perms FROM %s
WHERE vfs_path = ? AND vfs_name= ? AND vfs_type = ?',
$this->_params['table']);
$this->log($sql, PEAR_LOG_DEBUG);
$fileList = $this->_db->getAll($sql, array($path, $name, VFS_FILE));
if (is_a($fileList, 'PEAR_Error')) {
$this->log($fileList, PEAR_LOG_ERR);
return $fileList;
}
if (!is_array($fileList) || count($fileList) < 1) {
return PEAR::raiseError(_("Unable to delete VFS file."));
}
/* There may be one or more files with the same name but the user may
* not have read access to them, so doesn't see them. So we have to
* delete the one they have access to. */
foreach ($fileList as $file) {
if ($file[1] == $this->_params['user'] ||
$file[2] & VFS_FLAG_WRITE) {
$sql = sprintf('DELETE FROM %s WHERE vfs_id = ?',
$this->_params['table']);
$this->log($sql, PEAR_LOG_DEBUG);
$result = $this->_db->query($sql, array($file[0]));
if (is_a($result, 'PEAR_Error')) {
$this->log($result, PEAR_LOG_ERR);
return $result;
}
if ($this->_db->affectedRows() == 0) {
return PEAR::raiseError(_("Unable to delete VFS file."));
}
return $result;
}
}
// FIXME: 'Access Denied deleting file %s/%s'
return PEAR::raiseError(_("Unable to delete VFS file."));
}
/**
* Renames a file or folder in the VFS.
*
* @param string $oldpath The old path to the file.
* @param string $oldname The old filename.
* @param string $newpath The new path of the file.
* @param string $newname The new filename.
*
* @return mixed True on success or a PEAR_Error object on failure.
*/
function rename($oldpath, $oldname, $newpath, $newname)
{
$conn = $this->_connect();
if (PEAR::isError($conn)) {
return $conn;
}
$sql = sprintf('SELECT vfs_id, vfs_owner, vfs_perms FROM %s
WHERE vfs_path = ? AND vfs_name= ?',
$this->_params['table']);
$this->log($sql, PEAR_LOG_DEBUG);
$fileList = $this->_db->getAll($sql, array($oldpath, $oldname));
if (is_a($fileList, 'PEAR_Error')) {
$this->log($fileList, PEAR_LOG_ERR);
return $fileList;
}
if (!is_array($fileList) || count($fileList) < 1) {
return PEAR::raiseError(_("Unable to rename VFS file."));
}
if (strpos($newpath, '/') === false) {
$parent = '';
$path = $newpath;
} else {
list($parent, $path) = explode('/', $newpath, 2);
}
if (!$this->isFolder($parent, $path)) {
if (is_a($result = $this->autocreatePath($newpath), 'PEAR_Error')) {
return $result;
}
}
/* There may be one or more files with the same name but the user may
* not have read access to them, so doesn't see them. So we have to
* rename the one they have access to. */
foreach ($fileList as $file) {
if ($file[1] == $this->_params['user'] ||
$file[2] & VFS_FLAG_WRITE) {
$sql = sprintf('UPDATE %s SET vfs_path = ?, vfs_name = ?, vfs_modified = ?
WHERE vfs_id = ?',
$this->_params['table']);
$this->log($sql, PEAR_LOG_DEBUG);
$result = $this->_db->query(
$sql,
array($newpath, $newname, time(), $file[0]));
if (is_a($result, 'PEAR_Error')) {
$this->log($result, PEAR_LOG_ERR);
return $result;
}
return $result;
}
}
return PEAR::raiseError(sprintf(_("Unable to rename VFS file %s/%s."),
$oldpath, $oldname));
}
/**
* Creates a folder on the VFS.
*
* @param string $path Holds the path of directory to create folder.
* @param string $name Holds the name of the new folder.
*
* @return mixed True on success or a PEAR_Error object on failure.
*/
function createFolder($path, $name)
{
$conn = $this->_connect();
if (PEAR::isError($conn)) {
return $conn;
}
/* Make sure we have write access to this and all parent paths. */
if (strlen($path)) {
$paths = explode('/', $path);
$previous = '';
foreach ($paths as $thispath) {
$sql = sprintf('SELECT vfs_owner, vfs_perms FROM %s
WHERE vfs_path = ? AND vfs_name= ?',
$this->_params['table']);
$this->log($sql, PEAR_LOG_DEBUG);
$results = $this->_db->getAll($sql, array($previous, $thispath));
if (is_a($results, 'PEAR_Error')) {
$this->log($results, PEAR_LOG_ERR);
return $results;
}
if (!is_array($results) || count($results) < 1) {
return PEAR::raiseError(_("Unable to create VFS directory."));
}
$allowed = false;
foreach ($results as $result) {
if ($result[0] == $this->_params['user'] ||
$result[1] & VFS_FLAG_WRITE) {
$allowed = true;
break;
}
}
if (!$allowed) {
return PEAR::raiseError(_("Access denied creating VFS directory."));
}
$previous = $thispath;
}
}
$id = $this->_db->nextId($this->_params['table']);
$sql = sprintf('INSERT INTO %s
(vfs_id, vfs_type, vfs_path, vfs_name, vfs_modified, vfs_owner, vfs_perms)
VALUES (?, ?, ?, ?, ?, ?, ?)',
$this->_params['table']);
$this->log($sql, PEAR_LOG_DEBUG);
$result = $this->_db->query(
$sql,
array($id, VFS_FOLDER, $path, $name, time(), $this->_params['user'], 0));
var_dump($this->_db->last_query);
if (is_a($result, 'PEAR_Error')) {
$this->log($result, PEAR_LOG_ERR);
}
return $result;
}
/**
* Deletes a folder from the VFS.
*
* @param string $path The path to delete the folder from.
* @param string $name The foldername to use.
* @param boolean $recursive Force a recursive delete?
*
* @return mixed True on success or a PEAR_Error object on failure.
*/
function deleteFolder($path, $name, $recursive = false)
{
$conn = $this->_connect();
if (PEAR::isError($conn)) {
return $conn;
}
if ($recursive) {
$result = $this->emptyFolder($path . '/' . $name);
if (is_a($result, 'PEAR_Error')) {
return $result;
}
} else {
$list = $this->listFolder($path . '/' . $name);
if (is_a($list, 'PEAR_Error')) {
return $list;
}
if (count($list)) {
return PEAR::raiseError(
sprintf(_("Unable to delete %s, the directory is not empty"),
$path . '/' . $name));
}
}
$sql = sprintf('SELECT vfs_id, vfs_owner, vfs_perms FROM %s
WHERE vfs_path = ? AND vfs_name= ? AND vfs_type = ?',
$this->_params['table']);
$this->log($sql, PEAR_LOG_DEBUG);
$fileList = $this->_db->getAll($sql, array($path, $name, VFS_FOLDER));
if (is_a($fileList, 'PEAR_Error')) {
$this->log($fileList, PEAR_LOG_ERR);
return $fileList;
}
if (!is_array($fileList) || count($fileList) < 1) {
return PEAR::raiseError(_("Unable to delete VFS directory."));
}
/* There may be one or more folders with the same name but as the user
* may not have read access to them, they don't see them. So we have
* to delete the one they have access to */
foreach ($fileList as $file) {
if ($file[1] == $this->_params['user'] ||
$file[2] & VFS_FLAG_WRITE) {
$sql = sprintf('DELETE FROM %s WHERE vfs_id = ?',
$this->_params['table']);
$this->log($sql, PEAR_LOG_DEBUG);
$result = $this->_db->query($sql, array($file[0]));
if (is_a($result, 'PEAR_Error')) {
$this->log($result, PEAR_LOG_ERR);
return $result;
}
if ($this->_db->affectedRows() == 0) {
return PEAR::raiseError(_("Unable to delete VFS directory."));
}
return $result;
}
}
// FIXME: 'Access Denied deleting folder %s/%s'
return PEAR::raiseError(_("Unable to delete VFS directory."));
}
/**
* Returns a list of the contents of a folder.
*
* @param string $path The path of the directory.
* @param mixed $filter String/hash to filter file/dirname on.
* @param boolean $dotfiles Show dotfiles?
* @param boolean $dironly Show only directories?
*
* @return mixed File list on success or false on failure.
*/
function _listFolder($path, $filter = null, $dotfiles = true,
$dironly = false)
{
$conn = $this->_connect();
if (is_a($conn, 'PEAR_Error')) {
return $conn;
}
$length_op = $this->_getFileSizeOp();
$sql = sprintf('SELECT vfs_name, vfs_type, vfs_modified, vfs_owner, vfs_perms, %s(vfs_data) FROM %s
WHERE vfs_path = ? AND (vfs_owner = ? OR vfs_perms \&\& ?)',
$length_op, $this->_params['table']);
$this->log($sql, PEAR_LOG_DEBUG);
$fileList = $this->_db->getAll(
$sql,
array($path, $this->_params['user'], VFS_FLAG_READ));
if (is_a($fileList, 'PEAR_Error')) {
$this->log($fileList, PEAR_LOG_ERR);
return $fileList;
}
$files = array();
foreach ($fileList as $line) {
// Filter out dotfiles if they aren't wanted.
if (!$dotfiles && substr($line[0], 0, 1) == '.') {
continue;
}
$file['name'] = stripslashes($line[0]);
if ($line[1] == VFS_FILE) {
$name = explode('.', $line[0]);
if (count($name) == 1) {
$file['type'] = '**none';
} else {
$file['type'] = VFS::strtolower($name[count($name) - 1]);
}
$file['size'] = $line[5];
} elseif ($line[1] == VFS_FOLDER) {
$file['type'] = '**dir';
$file['size'] = -1;
}
$file['date'] = $line[2];
$file['owner'] = $line[3];
$line[4] = intval($line[4]);
$file['perms'] = ($line[1] == VFS_FOLDER) ? 'd' : '-';
$file['perms'] .= 'rw-';
$file['perms'] .= ($line[4] & VFS_FLAG_READ) ? 'r' : '-';
$file['perms'] .= ($line[4] & VFS_FLAG_WRITE) ? 'w' : '-';
$file['perms'] .= '-';
$file['group'] = '';
// Filtering.
if ($this->_filterMatch($filter, $file['name'])) {
unset($file);
continue;
}
if ($dironly && $file['type'] !== '**dir') {
unset($file);
continue;
}
$files[$file['name']] = $file;
unset($file);
}
return $files;
}
/**
* Changes permissions for an Item on the VFS.
*
* @param string $path Holds the path of directory of the Item.
* @param string $name Holds the name of the Item.
*
* @return mixed True on success or a PEAR_Error object on failure.
*/
function changePermissions($path, $name, $permission)
{
$conn = $this->_connect();
if (PEAR::isError($conn)) {
return $conn;
}
$val = intval(substr($permission, -1));
$perm = 0;
$perm |= ($val & 4) ? VFS_FLAG_READ : 0;
$perm |= ($val & 2) ? VFS_FLAG_WRITE : 0;
$sql = sprintf('SELECT vfs_id, vfs_owner, vfs_perms FROM %s
WHERE vfs_path = ? AND vfs_name= ?',
$this->_params['table']);
$this->log($sql, PEAR_LOG_DEBUG);
$fileList = $this->_db->getAll($sql, array($path, $name));
if (is_a($fileList, 'PEAR_Error')) {
$this->log($fileList, PEAR_LOG_ERR);
return $fileList;
}
if (!is_array($fileList) || count($fileList) < 1) {
return PEAR::raiseError(_("Unable to rename VFS file."));
}
/* There may be one or more files with the same name but the user may
* not have read access to them, so doesn't see them. So we have to
* chmod the one they have access to. */
foreach ($fileList as $file) {
if ($file[1] == $this->_params['user'] ||
$file[2] & VFS_FLAG_WRITE) {
$sql = sprintf('UPDATE %s SET vfs_perms = ?
WHERE vfs_id = ?',
$this->_params['table']);
$this->log($sql, PEAR_LOG_DEBUG);
$result = $this->_db->query($sql, array($perm, $file[0]));
return $result;
}
}
return PEAR::raiseError(
sprintf(_("Unable to change permission for VFS file %s/%s."),
$path, $name));
}
}
|
