238 lines
8.8 KiB
PHP
238 lines
8.8 KiB
PHP
<?php
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/**
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* Class Minify_Controller_MinApp
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* @package Minify
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*/
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/**
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* Controller class for requests to /min/index.php
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*
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* @package Minify
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* @author Stephen Clay <steve@mrclay.org>
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*/
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class Minify_Controller_MinApp extends Minify_Controller_Base {
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/**
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* Set up groups of files as sources
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*
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* @param array $options controller and Minify options
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*
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* @return array Minify options
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*/
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public function setupSources($options) {
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// PHP insecure by default: realpath() and other FS functions can't handle null bytes.
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foreach (array('g', 'b', 'f') as $key) {
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if (isset($_GET[$key])) {
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$_GET[$key] = str_replace("\x00", '', (string)$_GET[$key]);
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}
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}
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// filter controller options
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$cOptions = array_merge(
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array(
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'allowDirs' => '//'
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,'groupsOnly' => false
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,'groups' => array()
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,'noMinPattern' => '@[-\\.]min\\.(?:js|css)$@i' // matched against basename
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)
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,(isset($options['minApp']) ? $options['minApp'] : array())
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);
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unset($options['minApp']);
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$sources = array();
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$this->selectionId = '';
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$firstMissingResource = null;
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if (isset($_GET['g'])) {
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// add group(s)
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$this->selectionId .= 'g=' . $_GET['g'];
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$keys = explode(',', $_GET['g']);
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if ($keys != array_unique($keys)) {
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$this->log("Duplicate group key found.");
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return $options;
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}
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foreach ($keys as $key) {
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if (! isset($cOptions['groups'][$key])) {
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$this->log("A group configuration for \"{$key}\" was not found");
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return $options;
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}
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$files = $cOptions['groups'][$key];
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// if $files is a single object, casting will break it
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if (is_object($files)) {
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$files = array($files);
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} elseif (! is_array($files)) {
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$files = (array)$files;
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}
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foreach ($files as $file) {
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if ($file instanceof Minify_Source) {
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$sources[] = $file;
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continue;
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}
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if (0 === strpos($file, '//')) {
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$file = $_SERVER['DOCUMENT_ROOT'] . substr($file, 1);
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}
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$realpath = realpath($file);
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if ($realpath && is_file($realpath)) {
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$sources[] = $this->_getFileSource($realpath, $cOptions);
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} else {
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$this->log("The path \"{$file}\" (realpath \"{$realpath}\") could not be found (or was not a file)");
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if (null === $firstMissingResource) {
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$firstMissingResource = basename($file);
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continue;
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} else {
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$secondMissingResource = basename($file);
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$this->log("More than one file was missing: '$firstMissingResource', '$secondMissingResource'");
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return $options;
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}
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}
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}
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if ($sources) {
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try {
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$this->checkType($sources[0]);
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} catch (Exception $e) {
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$this->log($e->getMessage());
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return $options;
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}
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}
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}
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}
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if (! $cOptions['groupsOnly'] && isset($_GET['f'])) {
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// try user files
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// The following restrictions are to limit the URLs that minify will
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// respond to.
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if (// verify at least one file, files are single comma separated,
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// and are all same extension
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! preg_match('/^[^,]+\\.(css|js)(?:,[^,]+\\.\\1)*$/', $_GET['f'], $m)
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// no "//"
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|| strpos($_GET['f'], '//') !== false
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// no "\"
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|| strpos($_GET['f'], '\\') !== false
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) {
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$this->log("GET param 'f' was invalid");
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return $options;
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}
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$ext = ".{$m[1]}";
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try {
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$this->checkType($m[1]);
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} catch (Exception $e) {
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$this->log($e->getMessage());
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return $options;
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}
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$files = explode(',', $_GET['f']);
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if ($files != array_unique($files)) {
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$this->log("Duplicate files were specified");
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return $options;
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}
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if (isset($_GET['b'])) {
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// check for validity
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if (preg_match('@^[^/]+(?:/[^/]+)*$@', $_GET['b'])
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&& false === strpos($_GET['b'], '..')
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&& $_GET['b'] !== '.') {
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// valid base
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$base = "/{$_GET['b']}/";
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} else {
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$this->log("GET param 'b' was invalid");
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return $options;
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}
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} else {
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$base = '/';
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}
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$allowDirs = array();
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foreach ((array)$cOptions['allowDirs'] as $allowDir) {
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$allowDirs[] = realpath(str_replace('//', $_SERVER['DOCUMENT_ROOT'] . '/', $allowDir));
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}
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$basenames = array(); // just for cache id
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foreach ($files as $file) {
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$uri = $base . $file;
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$path = $_SERVER['DOCUMENT_ROOT'] . $uri;
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$realpath = realpath($path);
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if (false === $realpath || ! is_file($realpath)) {
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$this->log("The path \"{$path}\" (realpath \"{$realpath}\") could not be found (or was not a file)");
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if (null === $firstMissingResource) {
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$firstMissingResource = $uri;
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continue;
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} else {
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$secondMissingResource = $uri;
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$this->log("More than one file was missing: '$firstMissingResource', '$secondMissingResource`'");
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return $options;
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}
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}
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try {
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parent::checkNotHidden($realpath);
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parent::checkAllowDirs($realpath, $allowDirs, $uri);
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} catch (Exception $e) {
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$this->log($e->getMessage());
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return $options;
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}
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$sources[] = $this->_getFileSource($realpath, $cOptions);
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$basenames[] = basename($realpath, $ext);
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}
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if ($this->selectionId) {
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$this->selectionId .= '_f=';
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}
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$this->selectionId .= implode(',', $basenames) . $ext;
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}
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if ($sources) {
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if (null !== $firstMissingResource) {
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array_unshift($sources, new Minify_Source(array(
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'id' => 'missingFile'
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// should not cause cache invalidation
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,'lastModified' => 0
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// due to caching, filename is unreliable.
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,'content' => "/* Minify: at least one missing file. See " . Minify::URL_DEBUG . " */\n"
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,'minifier' => ''
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)));
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}
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$this->sources = $sources;
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} else {
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$this->log("No sources to serve");
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}
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return $options;
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}
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/**
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* @param string $file
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*
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* @param array $cOptions
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*
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* @return Minify_Source
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*/
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protected function _getFileSource($file, $cOptions)
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{
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$spec['filepath'] = $file;
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if ($cOptions['noMinPattern'] && preg_match($cOptions['noMinPattern'], basename($file))) {
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if (preg_match('~\.css$~i', $file)) {
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$spec['minifyOptions']['compress'] = false;
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} else {
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$spec['minifier'] = '';
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}
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}
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return new Minify_Source($spec);
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}
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protected $_type = null;
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/**
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* Make sure that only source files of a single type are registered
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*
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* @param string $sourceOrExt
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*
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* @throws Exception
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*/
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public function checkType($sourceOrExt)
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{
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if ($sourceOrExt === 'js') {
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$type = Minify::TYPE_JS;
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} elseif ($sourceOrExt === 'css') {
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$type = Minify::TYPE_CSS;
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} elseif ($sourceOrExt->contentType !== null) {
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$type = $sourceOrExt->contentType;
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} else {
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return;
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}
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if ($this->_type === null) {
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$this->_type = $type;
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} elseif ($this->_type !== $type) {
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throw new Exception('Content-Type mismatch');
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}
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}
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}
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