111 lines
3.3 KiB
PHP
111 lines
3.3 KiB
PHP
<?php
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/**
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* Copyright (c) 2015 Thomas Müller <deepdiver@owncloud.com>
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* This file is licensed under the Affero General Public License version 3 or
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* later.
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* See the COPYING-README file.
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*/
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namespace OC\App;
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use OC\Hooks\BasicEmitter;
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use PhpParser\Lexer;
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use PhpParser\Node;
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use PhpParser\Node\Name;
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use PhpParser\NodeTraverser;
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use PhpParser\NodeVisitorAbstract;
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use PhpParser\Parser;
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use RecursiveCallbackFilterIterator;
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use RecursiveDirectoryIterator;
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use RecursiveIteratorIterator;
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use RegexIterator;
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use SplFileInfo;
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class CodeCheckVisitor extends NodeVisitorAbstract {
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public function __construct($blackListedClassNames) {
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$this->blackListedClassNames = array_map('strtolower', $blackListedClassNames);
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}
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public $errors = [];
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public function enterNode(Node $node) {
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if ($node instanceof Node\Stmt\Class_) {
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if (!is_null($node->extends)) {
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$this->checkBlackList($node->extends->toString(), CodeChecker::CLASS_EXTENDS_NOT_ALLOWED, $node);
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}
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foreach ($node->implements as $implements) {
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$this->checkBlackList($implements->toString(), CodeChecker::CLASS_IMPLEMENTS_NOT_ALLOWED, $node);
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}
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}
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if ($node instanceof Node\Expr\StaticCall) {
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if (!is_null($node->class)) {
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if ($node->class instanceof Name) {
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$this->checkBlackList($node->class->toString(), CodeChecker::STATIC_CALL_NOT_ALLOWED, $node);
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}
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if ($node->class instanceof Node\Expr\Variable) {
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/**
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* TODO: find a way to detect something like this:
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* $c = "OC_API";
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* $n = $i::call();
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*/
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}
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}
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}
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if ($node instanceof Node\Expr\ClassConstFetch) {
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if (!is_null($node->class)) {
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if ($node->class instanceof Name) {
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$this->checkBlackList($node->class->toString(), CodeChecker::CLASS_CONST_FETCH_NOT_ALLOWED, $node);
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}
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if ($node->class instanceof Node\Expr\Variable) {
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/**
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* TODO: find a way to detect something like this:
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* $c = "OC_API";
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* $n = $i::ADMIN_AUTH;
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*/
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}
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}
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}
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if ($node instanceof Node\Expr\New_) {
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if (!is_null($node->class)) {
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if ($node->class instanceof Name) {
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$this->checkBlackList($node->class->toString(), CodeChecker::CLASS_NEW_FETCH_NOT_ALLOWED, $node);
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}
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if ($node->class instanceof Node\Expr\Variable) {
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/**
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* TODO: find a way to detect something like this:
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* $c = "OC_API";
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* $n = new $i;
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*/
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}
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}
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}
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}
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private function checkBlackList($name, $errorCode, Node $node) {
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if (in_array(strtolower($name), $this->blackListedClassNames)) {
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$this->errors[]= [
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'disallowedToken' => $name,
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'errorCode' => $errorCode,
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'line' => $node->getLine(),
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'reason' => $this->buildReason($name, $errorCode)
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];
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}
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}
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private function buildReason($name, $errorCode) {
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static $errorMessages= [
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CodeChecker::CLASS_EXTENDS_NOT_ALLOWED => "used as base class",
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CodeChecker::CLASS_IMPLEMENTS_NOT_ALLOWED => "used as interface",
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CodeChecker::STATIC_CALL_NOT_ALLOWED => "static method call on private class",
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CodeChecker::CLASS_CONST_FETCH_NOT_ALLOWED => "used to fetch a const from",
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CodeChecker::CLASS_NEW_FETCH_NOT_ALLOWED => "is instanciated",
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];
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if (isset($errorMessages[$errorCode])) {
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return $errorMessages[$errorCode];
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}
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return "$name usage not allowed - error: $errorCode";
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}
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}
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