questlab/www/analytics/plugins/Installation/ServerFilesGenerator.php
2016-04-10 18:55:57 +02:00

303 lines
8.8 KiB
PHP

<?php
/**
* Piwik - free/libre analytics platform
*
* @link http://piwik.org
* @license http://www.gnu.org/licenses/gpl-3.0.html GPL v3 or later
*
*/
namespace Piwik\Plugins\Installation;
use Piwik\Filesystem;
use Piwik\SettingsServer;
class ServerFilesGenerator
{
/**
* Generate Apache .htaccess files to restrict access
*/
public static function createHtAccessFiles()
{
if (!SettingsServer::isApache()) {
return;
}
$denyAll = self::getDenyAllHtaccessContent();
$allow = self::getAllowHtaccessContent();
// more selective allow/deny filters
$allowAny =
"# Allow any file in this directory\n" .
"<Files \"*\">\n" .
$allow . "\n" .
"</Files>\n";
$allowStaticAssets =
"# Serve HTML files as text/html mime type - Note: requires mod_mime apache module!\n" .
"<IfModule mod_mime.c>\n" .
" AddHandler text/html .html\n" .
" AddHandler text/html .htm\n" .
"</IfModule>\n\n" .
"# Allow to serve static files which are safe\n" .
"<Files ~ \"\\.(gif|ico|jpg|png|svg|js|css|htm|html|swf|mp3|mp4|wav|ogg|avi|ttf)$\">\n" .
$allow . "\n" .
"</Files>\n";
$directoriesToProtect = array(
'/js' => $allowAny,
'/libs' => $denyAll . $allowStaticAssets,
'/vendor' => $denyAll . $allowStaticAssets,
'/plugins' => $denyAll . $allowStaticAssets,
'/misc/user' => $denyAll . $allowStaticAssets,
);
foreach ($directoriesToProtect as $directoryToProtect => $content) {
self::createHtAccess(PIWIK_INCLUDE_PATH . $directoryToProtect, $overwrite = true, $content);
}
// deny access to these folders
$directoriesToProtect = array(
'/config' => $denyAll,
'/core' => $denyAll,
'/lang' => $denyAll,
'/tmp' => $denyAll,
);
foreach ($directoriesToProtect as $directoryToProtect => $content) {
self::createHtAccess(PIWIK_INCLUDE_PATH . $directoryToProtect, $overwrite = true, $content);
}
}
public static function createHtAccessDenyAll($path)
{
self::createHtAccess($path, $overwrite = false, self::getDenyAllHtaccessContent());
}
/**
* Create .htaccess file in specified directory
*
* Apache-specific; for IIS @see web.config
*
* @param string $path without trailing slash
* @param bool $overwrite whether to overwrite an existing file or not
* @param string $content
*/
protected static function createHtAccess($path, $overwrite = true, $content)
{
if (SettingsServer::isApache()) {
$file = $path . '/.htaccess';
if ($overwrite || !file_exists($file)) {
@file_put_contents($file, $content);
}
}
}
/**
* Generate IIS web.config files to restrict access
*
* Note: for IIS 7 and above
*/
public static function createWebConfigFiles()
{
if (!SettingsServer::isIIS()) {
return;
}
@file_put_contents(PIWIK_INCLUDE_PATH . '/web.config',
'<?xml version="1.0" encoding="UTF-8"?>
<configuration>
<system.webServer>
<security>
<requestFiltering>
<hiddenSegments>
<add segment="config" />
<add segment="core" />
<add segment="lang" />
<add segment="tmp" />
</hiddenSegments>
<fileExtensions>
<add fileExtension=".tpl" allowed="false" />
<add fileExtension=".twig" allowed="false" />
<add fileExtension=".php4" allowed="false" />
<add fileExtension=".php5" allowed="false" />
<add fileExtension=".inc" allowed="false" />
<add fileExtension=".in" allowed="false" />
<add fileExtension=".csv" allowed="false" />
<add fileExtension=".pdf" allowed="false" />
<add fileExtension=".log" allowed="false" />
</fileExtensions>
</requestFiltering>
</security>
<directoryBrowse enabled="false" />
<defaultDocument>
<files>
<remove value="index.php" />
<add value="index.php" />
</files>
</defaultDocument>
<staticContent>
<remove fileExtension=".svg" />
<mimeMap fileExtension=".svg" mimeType="image/svg+xml" />
</staticContent>
</system.webServer>
</configuration>');
// deny direct access to .php files
$directoriesToProtect = array(
'/libs',
'/vendor',
'/plugins',
);
foreach ($directoriesToProtect as $directoryToProtect) {
@file_put_contents(PIWIK_INCLUDE_PATH . $directoryToProtect . '/web.config',
'<?xml version="1.0" encoding="UTF-8"?>
<configuration>
<system.webServer>
<security>
<requestFiltering>
<denyUrlSequences>
<add sequence=".php" />
</denyUrlSequences>
</requestFiltering>
</security>
</system.webServer>
</configuration>');
}
}
public static function deleteWebConfigFiles()
{
$path = PIWIK_INCLUDE_PATH;
@unlink($path . '/web.config');
@unlink($path . '/libs/web.config');
@unlink($path . '/vendor/web.config');
@unlink($path . '/plugins/web.config');
}
/**
* Generate default robots.txt, favicon.ico, etc to suppress
* 404 (Not Found) errors in the web server logs, if Piwik
* is installed in the web root (or top level of subdomain).
*
* @see misc/crossdomain.xml
*/
public static function createWebRootFiles()
{
$filesToCreate = array(
'/robots.txt',
'/favicon.ico',
);
foreach ($filesToCreate as $file) {
@file_put_contents(PIWIK_DOCUMENT_ROOT . $file, '');
}
}
/**
* @return string
*/
protected static function getDenyAllHtaccessContent()
{
$deny = self::getDenyHtaccessContent();
$denyAll =
"# First, deny access to all files in this directory\n" .
"<Files \"*\">\n" .
$deny . "\n" .
"</Files>\n";
return $denyAll;
}
/**
* @return string
*/
protected static function getDenyHtaccessContent()
{
# Source: https://github.com/phpbb/phpbb/pull/2386/files#diff-f72a38c4bec79cc6ded3f8e435d6bd55L11
# With Apache 2.4 the "Order, Deny" syntax has been deprecated and moved from
# module mod_authz_host to a new module called mod_access_compat (which may be
# disabled) and a new "Require" syntax has been introduced to mod_authz_host.
# We could just conditionally provide both versions, but unfortunately Apache
# does not explicitly tell us its version if the module mod_version is not
# available. In this case, we check for the availability of module
# mod_authz_core (which should be on 2.4 or higher only) as a best guess.
$deny = <<<HTACCESS_DENY
<IfModule mod_version.c>
<IfVersion < 2.4>
Order Deny,Allow
Deny from All
</IfVersion>
<IfVersion >= 2.4>
Require all denied
</IfVersion>
</IfModule>
<IfModule !mod_version.c>
<IfModule !mod_authz_core.c>
Order Deny,Allow
Deny from All
</IfModule>
<IfModule mod_authz_core.c>
Require all denied
</IfModule>
</IfModule>
HTACCESS_DENY;
return $deny;
}
/**
* @return string
*/
protected static function getAllowHtaccessContent()
{
$allow = <<<HTACCESS_ALLOW
<IfModule mod_version.c>
<IfVersion < 2.4>
Order Allow,Deny
Allow from All
</IfVersion>
<IfVersion >= 2.4>
Require all granted
</IfVersion>
</IfModule>
<IfModule !mod_version.c>
<IfModule !mod_authz_core.c>
Order Allow,Deny
Allow from All
</IfModule>
<IfModule mod_authz_core.c>
Require all granted
</IfModule>
</IfModule>
HTACCESS_ALLOW;
return $allow;
}
/**
* Deletes all existing .htaccess files and web.config files that Piwik may have created,
*/
public static function deleteHtAccessFiles()
{
$files = Filesystem::globr(PIWIK_INCLUDE_PATH, ".htaccess");
// that match the list of directories we create htaccess files
// (ie. not the root /.htaccess)
$directoriesWithAutoHtaccess = array(
'/js',
'/libs',
'/vendor',
'/plugins',
'/misc/user',
'/config',
'/core',
'/lang',
'/tmp',
);
foreach ($files as $file) {
foreach ($directoriesWithAutoHtaccess as $dirToDelete) {
// only delete the first .htaccess and not the ones in sub-directories
$pathToDelete = $dirToDelete . '/.htaccess';
if (strpos($file, $pathToDelete) !== false) {
@unlink($file);
}
}
}
}
}