322 lines
9.6 KiB
PHP
322 lines
9.6 KiB
PHP
<?php
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/**
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* Piwik - free/libre analytics platform
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*
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* @link http://piwik.org
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* @license http://www.gnu.org/licenses/gpl-3.0.html GPL v3 or later
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*
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*/
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namespace Piwik\Plugins\Installation;
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use Piwik\Filesystem;
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use Piwik\SettingsServer;
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class ServerFilesGenerator
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{
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public static function createFilesForSecurity()
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{
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self::deleteHtAccessFiles();
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self::createHtAccessFiles();
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self::deleteWebConfigFiles();
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self::createWebConfigFiles();
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self::createWebRootFiles();
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}
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/**
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* Generate Apache .htaccess files to restrict access
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* .htaccess files are created on all webservers even Nginx, as sometimes Nginx knows how to handle .htaccess files
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*/
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public static function createHtAccessFiles()
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{
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$denyAll = self::getDenyAllHtaccessContent();
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$allow = self::getAllowHtaccessContent();
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$allowAny =
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"# Allow any file in this directory\n" .
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"<Files \"*\">\n" .
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"\t" . $allow . "\n" .
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"</Files>\n";
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$allowStaticAssets =
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"# Serve HTML files as text/html mime type - Note: requires mod_mime apache module!\n" .
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"<IfModule mod_mime.c>\n" .
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" AddHandler text/html .html\n" .
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" AddHandler text/html .htm\n" .
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"</IfModule>\n\n" .
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"# Allow to serve static files which are safe\n" .
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"<Files ~ \"\\.(gif|ico|jpg|png|svg|js|css|htm|html|mp3|mp4|wav|ogg|avi|ttf|eot|woff|woff2|json)$\">\n" .
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$allow . "\n" .
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"</Files>\n";
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$noCachePreview = "
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# do not cache preview container files
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<Files ~ \"^container_.*_preview\.js$\">
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<IfModule mod_headers.c>
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Header set Cache-Control \"Cache-Control: private, no-cache, no-store\"
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</IfModule>
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</Files>";
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$directoriesToProtect = array(
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'/js' => $allowAny . $noCachePreview,
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'/libs' => $denyAll . $allowStaticAssets,
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'/vendor' => $denyAll . $allowStaticAssets,
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'/plugins' => $denyAll . $allowStaticAssets,
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'/misc/user' => $denyAll . $allowStaticAssets,
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);
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foreach ($directoriesToProtect as $directoryToProtect => $content) {
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self::createHtAccess(PIWIK_INCLUDE_PATH . $directoryToProtect, $overwrite = true, $content);
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}
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// deny access to these folders
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$directoriesToProtect = array(
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'/config' => $denyAll,
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'/core' => $denyAll,
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'/lang' => $denyAll,
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'/tmp' => $denyAll,
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);
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foreach ($directoriesToProtect as $directoryToProtect => $content) {
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self::createHtAccess(PIWIK_INCLUDE_PATH . $directoryToProtect, $overwrite = true, $content);
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}
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}
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/**
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* Create .htaccess file in specified directory
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*
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* Apache-specific; for IIS @see web.config
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*
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* .htaccess files are created on all webservers even Nginx, as sometimes Nginx knows how to handle .htaccess files
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*
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* @param string $path without trailing slash
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* @param bool $overwrite whether to overwrite an existing file or not
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* @param string $content
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*/
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protected static function createHtAccess($path, $overwrite = true, $content)
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{
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$file = $path . '/.htaccess';
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$content = "# This file is auto generated by Matomo, do not edit directly\n# Please report any issue or improvement directly to the Matomo team.\n\n" . $content;
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if ($overwrite || !file_exists($file)) {
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@file_put_contents($file, $content, LOCK_EX);
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}
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}
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/**
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* Generate IIS web.config files to restrict access
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*
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* Note: for IIS 7 and above
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*/
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protected static function createWebConfigFiles()
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{
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if (!SettingsServer::isIIS()) {
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return;
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}
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@file_put_contents(PIWIK_INCLUDE_PATH . '/web.config',
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'<?xml version="1.0" encoding="UTF-8"?>
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<configuration>
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<system.webServer>
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<security>
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<requestFiltering>
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<hiddenSegments>
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<add segment="config" />
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<add segment="core" />
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<add segment="lang" />
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<add segment="tmp" />
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</hiddenSegments>
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<fileExtensions>
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<add fileExtension=".tpl" allowed="false" />
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<add fileExtension=".twig" allowed="false" />
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<add fileExtension=".php4" allowed="false" />
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<add fileExtension=".php5" allowed="false" />
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<add fileExtension=".inc" allowed="false" />
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<add fileExtension=".in" allowed="false" />
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<add fileExtension=".csv" allowed="false" />
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<add fileExtension=".pdf" allowed="false" />
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<add fileExtension=".log" allowed="false" />
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</fileExtensions>
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</requestFiltering>
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</security>
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<directoryBrowse enabled="false" />
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<defaultDocument>
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<files>
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<remove value="index.php" />
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<add value="index.php" />
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</files>
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</defaultDocument>
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<staticContent>
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<remove fileExtension=".svg" />
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<mimeMap fileExtension=".svg" mimeType="image/svg+xml" />
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<remove fileExtension=".woff" />
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<mimeMap fileExtension=".woff" mimeType="application/font-woff" />
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</staticContent>
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</system.webServer>
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</configuration>');
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// deny direct access to .php files
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$directoriesToProtect = array(
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'/libs',
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'/vendor',
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'/plugins',
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);
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foreach ($directoriesToProtect as $directoryToProtect) {
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@file_put_contents(PIWIK_INCLUDE_PATH . $directoryToProtect . '/web.config',
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'<?xml version="1.0" encoding="UTF-8"?>
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<configuration>
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<system.webServer>
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<security>
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<requestFiltering>
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<denyUrlSequences>
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<add sequence=".php" />
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</denyUrlSequences>
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</requestFiltering>
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</security>
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</system.webServer>
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</configuration>');
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}
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}
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public static function deleteWebConfigFiles()
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{
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$path = PIWIK_INCLUDE_PATH;
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@unlink($path . '/web.config');
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@unlink($path . '/libs/web.config');
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@unlink($path . '/vendor/web.config');
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@unlink($path . '/plugins/web.config');
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}
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/**
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* Generate default robots.txt, favicon.ico, etc to suppress
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* 404 (Not Found) errors in the web server logs, if Piwik
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* is installed in the web root (or top level of subdomain).
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*
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* @see misc/crossdomain.xml
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*/
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public static function createWebRootFiles()
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{
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$filesToCreate = array(
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'/robots.txt',
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'/favicon.ico',
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);
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foreach ($filesToCreate as $file) {
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$path = PIWIK_DOCUMENT_ROOT . $file;
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if(!file_exists($path)) {
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@file_put_contents($path, '');
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}
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}
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}
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/**
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* @return string
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*/
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protected static function getDenyAllHtaccessContent()
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{
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$deny = self::getDenyHtaccessContent();
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$denyAll =
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"# First, deny access to all files in this directory\n" .
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"<Files \"*\">\n" .
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$deny . "\n" .
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"</Files>\n";
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return $denyAll;
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}
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/**
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* @return string
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*/
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protected static function getDenyHtaccessContent()
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{
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# Source: https://github.com/phpbb/phpbb/pull/2386/files#diff-f72a38c4bec79cc6ded3f8e435d6bd55L11
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# With Apache 2.4 the "Order, Deny" syntax has been deprecated and moved from
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# module mod_authz_host to a new module called mod_access_compat (which may be
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# disabled) and a new "Require" syntax has been introduced to mod_authz_host.
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# We could just conditionally provide both versions, but unfortunately Apache
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# does not explicitly tell us its version if the module mod_version is not
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# available. In this case, we check for the availability of module
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# mod_authz_core (which should be on 2.4 or higher only) as a best guess.
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$deny = <<<HTACCESS_DENY
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<IfModule mod_version.c>
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<IfVersion < 2.4>
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Order Deny,Allow
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Deny from All
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</IfVersion>
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<IfVersion >= 2.4>
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Require all denied
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</IfVersion>
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</IfModule>
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<IfModule !mod_version.c>
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<IfModule !mod_authz_core.c>
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Order Deny,Allow
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Deny from All
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</IfModule>
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<IfModule mod_authz_core.c>
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Require all denied
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</IfModule>
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</IfModule>
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HTACCESS_DENY;
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return $deny;
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}
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/**
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* @return string
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*/
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protected static function getAllowHtaccessContent()
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{
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$allow = <<<HTACCESS_ALLOW
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<IfModule mod_version.c>
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<IfVersion < 2.4>
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Order Allow,Deny
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Allow from All
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</IfVersion>
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<IfVersion >= 2.4>
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Require all granted
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</IfVersion>
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</IfModule>
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<IfModule !mod_version.c>
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<IfModule !mod_authz_core.c>
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Order Allow,Deny
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Allow from All
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</IfModule>
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<IfModule mod_authz_core.c>
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Require all granted
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</IfModule>
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</IfModule>
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HTACCESS_ALLOW;
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return $allow;
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}
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/**
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* Deletes all existing .htaccess files and web.config files that Matomo may have created,
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*/
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public static function deleteHtAccessFiles()
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{
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$files = Filesystem::globr(PIWIK_INCLUDE_PATH, ".htaccess");
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// that match the list of directories we create htaccess files
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// (ie. not the root /.htaccess)
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$directoriesWithAutoHtaccess = array(
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'/js',
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'/libs',
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'/vendor',
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'/plugins',
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'/misc/user',
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'/config',
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'/core',
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'/lang',
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'/tmp',
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);
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foreach ($files as $file) {
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foreach ($directoriesWithAutoHtaccess as $dirToDelete) {
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// only delete the first .htaccess and not the ones in sub-directories
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$pathToDelete = $dirToDelete . '/.htaccess';
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if (strpos($file, $pathToDelete) !== false) {
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@unlink($file);
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}
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}
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}
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}
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}
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