silverstripe-environmentcheck/code/checks/FileWriteableCheck.php
2015-11-21 19:18:35 +13:00

78 lines
2.8 KiB
PHP

<?php
/**
* Check that the given file is writable.
*/
class FileWriteableCheck implements EnvironmentCheck
{
/**
* @var string
*/
protected $path;
/**
* @param string $path The full path. If a relative path, it will relative to the BASE_PATH.
*/
public function __construct($path)
{
$this->path = $path;
}
/**
* @inheritdoc
*
* @return array
*/
public function check()
{
if ($this->path[0] == '/') {
$filename = $this->path;
} else {
$filename = BASE_PATH . DIRECTORY_SEPARATOR . str_replace('/', DIRECTORY_SEPARATOR, $this->path);
}
if (file_exists($filename)) {
$isWriteable = is_writeable($filename);
} else {
$isWriteable = is_writeable(dirname($filename));
}
if (!$isWriteable) {
if (function_exists('posix_getgroups')) {
$userID = posix_geteuid();
$user = posix_getpwuid($userID);
$currentOwnerID = fileowner(file_exists($filename) ? $filename : dirname($filename));
$currentOwner = posix_getpwuid($currentOwnerID);
$message = "User '$user[name]' needs to be able to write to this file:\n$filename\n\nThe file is currently owned by '$currentOwner[name]'. ";
if ($user['name'] == $currentOwner['name']) {
$message .= "We recommend that you make the file writeable.";
} else {
$groups = posix_getgroups();
$groupList = array();
foreach ($groups as $group) {
$groupInfo = posix_getgrgid($group);
if (in_array($currentOwner['name'], $groupInfo['members'])) {
$groupList[] = $groupInfo['name'];
}
}
if ($groupList) {
$message .= " We recommend that you make the file group-writeable and change the group to one of these groups:\n - ". implode("\n - ", $groupList)
. "\n\nFor example:\nchmod g+w $filename\nchgrp " . $groupList[0] . " $filename";
} else {
$message .= " There is no user-group that contains both the web-server user and the owner of this file. Change the ownership of the file, create a new group, or temporarily make the file writeable by everyone during the install process.";
}
}
} else {
$message = "The webserver user needs to be able to write to this file:\n$filename";
}
return array(EnvironmentCheck::ERROR, $message);
}
return array(EnvironmentCheck::OK,'');
}
}