69 lines
2.2 KiB
PHP
69 lines
2.2 KiB
PHP
<?php
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/**
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* Check that the given file is writable.
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*/
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class FileWriteableCheck implements EnvironmentCheck {
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/**
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* @var string
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*/
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protected $path;
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/**
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* @param string $path The full path. If a relative path, it will relative to the BASE_PATH.
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*/
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function __construct($path) {
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$this->path = $path;
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}
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/**
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* @inheritdoc
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*
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* @return array
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*/
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function check() {
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if($this->path[0] == '/') $filename = $this->path;
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else $filename = BASE_PATH . DIRECTORY_SEPARATOR . str_replace('/', DIRECTORY_SEPARATOR, $this->path);
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if(file_exists($filename)) $isWriteable = is_writeable($filename);
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else $isWriteable = is_writeable(dirname($filename));
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if(!$isWriteable) {
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if(function_exists('posix_getgroups')) {
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$userID = posix_geteuid();
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$user = posix_getpwuid($userID);
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$currentOwnerID = fileowner(file_exists($filename) ? $filename : dirname($filename) );
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$currentOwner = posix_getpwuid($currentOwnerID);
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$message = "User '$user[name]' needs to be able to write to this file:\n$filename\n\nThe file is currently owned by '$currentOwner[name]'. ";
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if($user['name'] == $currentOwner['name']) {
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$message .= "We recommend that you make the file writeable.";
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} else {
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$groups = posix_getgroups();
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$groupList = array();
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foreach($groups as $group) {
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$groupInfo = posix_getgrgid($group);
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if(in_array($currentOwner['name'], $groupInfo['members'])) $groupList[] = $groupInfo['name'];
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}
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if($groupList) {
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$message .= " We recommend that you make the file group-writeable and change the group to one of these groups:\n - ". implode("\n - ", $groupList)
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. "\n\nFor example:\nchmod g+w $filename\nchgrp " . $groupList[0] . " $filename";
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} else {
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$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.";
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}
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}
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} else {
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$message = "The webserver user needs to be able to write to this file:\n$filename";
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}
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return array(EnvironmentCheck::ERROR, $message);
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}
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return array(EnvironmentCheck::OK,'');
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}
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}
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