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<?php
/**
* Class Minify_Controller_MinApp
* @package Minify
*/
/**
* Controller class for requests to /min/index.php
*
* @package Minify
* @author Stephen Clay <steve@mrclay.org>
*/
class Minify_Controller_MinApp extends Minify_Controller_Base
{
/**
* Set up groups of files as sources
*
* @param array $options controller and Minify options
*
* @return array Minify options
*/
public function createConfiguration(array $options)
{
// PHP insecure by default: realpath() and other FS functions can't handle null bytes.
$get = $this->env->get();
foreach (array('g', 'b', 'f') as $key) {
if (isset($get[$key])) {
$get[$key] = str_replace("\x00", '', (string)$get[$key]);
}
}
// filter controller options
$defaults = array(
'groupsOnly' => false,
'groups' => array(),
'symlinks' => array(),
);
$minApp = isset($options['minApp']) ? $options['minApp'] : array();
$localOptions = array_merge($defaults, $minApp);
unset($options['minApp']);
// normalize $symlinks in order to map to target
$symlinks = array();
foreach ($localOptions['symlinks'] as $link => $target) {
if (0 === strpos($link, '//')) {
$link = rtrim(substr($link, 1), '/') . '/';
$target = rtrim($target, '/\\');
$symlinks[$link] = $target;
}
}
$sources = array();
$selectionId = '';
$firstMissing = null;
if (isset($get['g'])) {
// add group(s)
$selectionId .= 'g=' . $get['g'];
$keys = explode(',', $get['g']);
if ($keys != array_unique($keys)) {
$this->logger->info("Duplicate group key found.");
return new Minify_ServeConfiguration($options);
}
foreach ($keys as $key) {
if (! isset($localOptions['groups'][$key])) {
$this->logger->info("A group configuration for \"{$key}\" was not found");
return new Minify_ServeConfiguration($options);
}
$files = $localOptions['groups'][$key];
// if $files is a single object, casting will break it
if (is_object($files)) {
$files = array($files);
} elseif (! is_array($files)) {
$files = (array)$files;
}
foreach ($files as $file) {
try {
$source = $this->sourceFactory->makeSource($file);
$sources[] = $source;
} catch (Minify_Source_FactoryException $e) {
$this->logger->error($e->getMessage());
if (null === $firstMissing) {
$firstMissing = basename($file);
continue;
} else {
$secondMissing = basename($file);
$this->logger->info("More than one file was missing: '$firstMissing', '$secondMissing'");
return new Minify_ServeConfiguration($options);
}
}
}
}
}
if (! $localOptions['groupsOnly'] && isset($get['f'])) {
// try user files
// The following restrictions are to limit the URLs that minify will
// respond to.
// verify at least one file, files are single comma separated, and are all same extension
$validPattern = preg_match('/^[^,]+\\.(css|less|scss|js)(?:,[^,]+\\.\\1)*$/', $get['f'], $m);
$hasComment = strpos($get['f'], '//') !== false;
$hasEscape = strpos($get['f'], '\\') !== false;
if (!$validPattern || $hasComment || $hasEscape) {
$this->logger->info("GET param 'f' was invalid");
return new Minify_ServeConfiguration($options);
}
$ext = ".{$m[1]}";
$files = explode(',', $get['f']);
if ($files != array_unique($files)) {
$this->logger->info("Duplicate files were specified");
return new Minify_ServeConfiguration($options);
}
if (isset($get['b'])) {
// check for validity
$isValidBase = preg_match('@^[^/]+(?:/[^/]+)*$@', $get['b']);
$hasDots = false !== strpos($get['b'], '..');
$isDot = $get['b'] === '.';
if ($isValidBase && !$hasDots && !$isDot) {
// valid base
$base = "/{$get['b']}/";
} else {
$this->logger->info("GET param 'b' was invalid");
return new Minify_ServeConfiguration($options);
}
} else {
$base = '/';
}
$basenames = array(); // just for cache id
foreach ($files as $file) {
$uri = $base . $file;
$path = $this->env->getDocRoot() . $uri;
// try to rewrite path
foreach ($symlinks as $link => $target) {
if (0 === strpos($uri, $link)) {
$path = $target . DIRECTORY_SEPARATOR . substr($uri, strlen($link));
break;
}
}
try {
$source = $this->sourceFactory->makeSource($path);
$sources[] = $source;
$basenames[] = basename($path, $ext);
} catch (Minify_Source_FactoryException $e) {
$this->logger->error($e->getMessage());
if (null === $firstMissing) {
$firstMissing = $uri;
continue;
} else {
$secondMissing = $uri;
$this->logger->info("More than one file was missing: '$firstMissing', '$secondMissing`'");
return new Minify_ServeConfiguration($options);
}
}
}
if ($selectionId) {
$selectionId .= '_f=';
}
$selectionId .= implode(',', $basenames) . $ext;
}
if (!$sources) {
$this->logger->info("No sources to serve");
return new Minify_ServeConfiguration($options);
}
if (null !== $firstMissing) {
array_unshift($sources, new Minify_Source(array(
'id' => 'missingFile',
// should not cause cache invalidation
'lastModified' => 0,
// due to caching, filename is unreliable.
'content' => "/* Minify: at least one missing file. See " . Minify::URL_DEBUG . " */\n",
'minifier' => 'Minify::nullMinifier',
)));
}
return new Minify_ServeConfiguration($options, $sources, $selectionId);
}
}
|
