Imported code from old repository
This commit is contained in:
File diff suppressed because one or more lines are too long
@@ -0,0 +1,403 @@
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<?php
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/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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namespace CloudObjects\PhpMAE\Sandbox;
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use PhpParser\Node, PhpParser\NodeVisitorAbstract;
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use PHPSandbox\PHPSandbox, PHPSandbox\ValidatorVisitor,
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PHPSandbox\Error;
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class CustomizedValidatorVisitor extends ValidatorVisitor {
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public function leaveNode(Node $node){
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if($node instanceof Node\Arg){
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return new Node\Expr\FuncCall(new Node\Name\FullyQualified(($node->value instanceof Node\Expr\Variable) ? 'PHPSandbox\\wrapByRef' : 'PHPSandbox\\wrap'), [$node, new Node\Expr\StaticCall(new Node\Name\FullyQualified("CloudObjects\\PhpMAE\\Sandbox\\CustomizedSandbox"), 'getGlobalSandbox')], $node->getAttributes());
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} else if($node instanceof Node\Stmt\InlineHTML){
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if(!$this->sandbox->allow_escaping){
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$this->sandbox->validationError("Sandboxed code attempted to escape to HTML!", Error::ESCAPE_ERROR, $node);
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}
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}else if($node instanceof Node\Expr\Cast){
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if(!$this->sandbox->allow_casting){
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$this->sandbox->validationError("Sandboxed code attempted to cast!", Error::CAST_ERROR, $node);
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}
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if($node instanceof Node\Expr\Cast\Int_){
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return new Node\Expr\MethodCall(new Node\Expr\StaticCall(new Node\Name\FullyQualified("CloudObjects\\PhpMAE\\Sandbox\\CustomizedSandbox"), 'getGlobalSandbox'), '_intval', [new Node\Arg($node->expr)], $node->getAttributes());
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} else if($node instanceof Node\Expr\Cast\Double){
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return new Node\Expr\MethodCall(new Node\Expr\StaticCall(new Node\Name\FullyQualified("CloudObjects\\PhpMAE\\Sandbox\\CustomizedSandbox"), 'getGlobalSandbox'), '_floatval', [new Node\Arg($node->expr)], $node->getAttributes());
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} else if($node instanceof Node\Expr\Cast\Bool_){
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return new Node\Expr\MethodCall(new Node\Expr\StaticCall(new Node\Name\FullyQualified("CloudObjects\\PhpMAE\\Sandbox\\CustomizedSandbox"), 'getGlobalSandbox'), '_boolval', [new Node\Arg($node->expr)], $node->getAttributes());
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} else if($node instanceof Node\Expr\Cast\Array_){
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return new Node\Expr\MethodCall(new Node\Expr\StaticCall(new Node\Name\FullyQualified("CloudObjects\\PhpMAE\\Sandbox\\CustomizedSandbox"), 'getGlobalSandbox'), '_arrayval', [new Node\Arg($node->expr)], $node->getAttributes());
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} else if($node instanceof Node\Expr\Cast\Object_){
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return new Node\Expr\MethodCall(new Node\Expr\StaticCall(new Node\Name\FullyQualified("CloudObjects\\PhpMAE\\Sandbox\\CustomizedSandbox"), 'getGlobalSandbox'), '_objectval', [new Node\Arg($node->expr)], $node->getAttributes());
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}
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} else if($node instanceof Node\Expr\FuncCall){
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if($node->name instanceof Node\Name){
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$name = strtolower($node->name->toString());
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if(!$this->sandbox->checkFunc($name)){
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$this->sandbox->validationError("Function failed custom validation!", Error::VALID_FUNC_ERROR, $node);
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}
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if($this->sandbox->isDefinedFunc($name)){
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$args = $node->args;
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array_unshift($args, new Node\Arg(new Node\Scalar\String_($name)));
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return new Node\Expr\MethodCall(new Node\Expr\StaticCall(new Node\Name\FullyQualified("CloudObjects\\PhpMAE\\Sandbox\\CustomizedSandbox"), 'getGlobalSandbox'), 'call_func', $args, $node->getAttributes());
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}
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if($this->sandbox->overwrite_defined_funcs && in_array($name, PHPSandbox::$defined_funcs)){
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return new Node\Expr\MethodCall(new Node\Expr\StaticCall(new Node\Name\FullyQualified("CloudObjects\\PhpMAE\\Sandbox\\CustomizedSandbox"), 'getGlobalSandbox'), '_' . $name, [new Node\Arg(new Node\Expr\FuncCall(new Node\Name([$name])))], $node->getAttributes());
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}
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if($this->sandbox->overwrite_sandboxed_string_funcs && in_array($name, PHPSandbox::$sandboxed_string_funcs)){
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$args = $node->args;
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return new Node\Expr\MethodCall(new Node\Expr\StaticCall(new Node\Name\FullyQualified("CloudObjects\\PhpMAE\\Sandbox\\CustomizedSandbox"), 'getGlobalSandbox'), '_' . $name, $args, $node->getAttributes());
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}
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if($this->sandbox->overwrite_func_get_args && in_array($name, PHPSandbox::$arg_funcs)){
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if($name == 'func_get_arg'){
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$index = new Node\Arg(new Node\Scalar\LNumber(0));
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if(isset($node->args[0]) && $node->args[0] instanceof Node\Arg){
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$index = $node->args[0];
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}
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return new Node\Expr\MethodCall(new Node\Expr\StaticCall(new Node\Name\FullyQualified("CloudObjects\\PhpMAE\\Sandbox\\CustomizedSandbox"), 'getGlobalSandbox'), '_' . $name, [new Node\Arg(new Node\Expr\FuncCall(new Node\Name(['func_get_args']))), $index], $node->getAttributes());
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}
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return new Node\Expr\MethodCall(new Node\Expr\StaticCall(new Node\Name\FullyQualified("CloudObjects\\PhpMAE\\Sandbox\\CustomizedSandbox"), 'getGlobalSandbox'), '_' . $name, [new Node\Arg(new Node\Expr\FuncCall(new Node\Name(['func_get_args'])))], $node->getAttributes());
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}
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} else {
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return new Node\Expr\Ternary(
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new Node\Expr\MethodCall(new Node\Expr\StaticCall(new Node\Name\FullyQualified("CloudObjects\\PhpMAE\\Sandbox\\CustomizedSandbox"), 'getGlobalSandbox'), 'check_func', [new Node\Arg($node->name)], $node->getAttributes()),
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$node,
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new Node\Expr\ConstFetch(new Node\Name('null'))
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);
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}
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} else if($node instanceof Node\Stmt\Function_){
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if(!$this->sandbox->allow_functions){
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$this->sandbox->validationError("Sandboxed code attempted to define function!", Error::DEFINE_FUNC_ERROR, $node);
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}
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if(!$this->sandbox->checkKeyword('function')){
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$this->sandbox->validationError("Keyword failed custom validation!", Error::VALID_KEYWORD_ERROR, $node, 'function');
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}
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if(!$node->name){
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$this->sandbox->validationError("Sandboxed code attempted to define unnamed function!", Error::DEFINE_FUNC_ERROR, $node, '');
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}
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if($this->sandbox->isDefinedFunc($node->name)){
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$this->sandbox->validationError("Sandboxed code attempted to redefine function!", Error::DEFINE_FUNC_ERROR, $node, $node->name);
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}
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if($node->byRef && !$this->sandbox->allow_references){
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$this->sandbox->validationError("Sandboxed code attempted to define function return by reference!", Error::BYREF_ERROR, $node);
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}
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} else if($node instanceof Node\Expr\Closure){
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if(!$this->sandbox->allow_closures){
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$this->sandbox->validationError("Sandboxed code attempted to create a closure!", Error::CLOSURE_ERROR, $node);
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}
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} else if($node instanceof Node\Stmt\Class_){
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if(!$this->sandbox->allow_classes){
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$this->sandbox->validationError("Sandboxed code attempted to define class!", Error::DEFINE_CLASS_ERROR, $node);
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}
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if(!$this->sandbox->checkKeyword('class')){
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$this->sandbox->validationError("Keyword failed custom validation!", Error::VALID_KEYWORD_ERROR, $node, 'class');
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}
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if(!$node->name){
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$this->sandbox->validationError("Sandboxed code attempted to define unnamed class!", Error::DEFINE_CLASS_ERROR, $node, '');
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}
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if(!$this->sandbox->checkClass($node->name)){
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$this->sandbox->validationError("Class failed custom validation!", Error::VALID_CLASS_ERROR, $node, $node->name);
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}
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if($node->extends instanceof Node\Name){
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if(!$this->sandbox->checkKeyword('extends')){
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$this->sandbox->validationError("Keyword failed custom validation!", Error::VALID_KEYWORD_ERROR, $node, 'extends');
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}
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if(!$node->extends->toString()){
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$this->sandbox->validationError("Sandboxed code attempted to extend unnamed class!", Error::DEFINE_CLASS_ERROR, $node, '');
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}
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if(!$this->sandbox->checkClass($node->extends->toString(), true)){
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$this->sandbox->validationError("Class extension failed custom validation!", Error::VALID_CLASS_ERROR, $node, $node->extends->toString());
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}
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}
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if(is_array($node->implements)){
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if(!$this->sandbox->checkKeyword('implements')){
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$this->sandbox->validationError("Keyword failed custom validation!", Error::VALID_KEYWORD_ERROR, $node, 'implements');
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}
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foreach($node->implements as $implement){
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/**
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* @var Node\Name $implement
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*/
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if(!$implement->toString()){
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$this->sandbox->validationError("Sandboxed code attempted to implement unnamed interface!", Error::DEFINE_INTERFACE_ERROR, $node, '');
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}
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if(!$this->sandbox->checkInterface($implement->toString())){
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$this->sandbox->validationError("Interface failed custom validation!", Error::VALID_INTERFACE_ERROR, $node, $implement->toString());
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}
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}
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}
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} else if($node instanceof Node\Stmt\Interface_){
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if(!$this->sandbox->allow_interfaces){
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$this->sandbox->validationError("Sandboxed code attempted to define interface!", Error::DEFINE_INTERFACE_ERROR, $node);
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}
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if(!$this->sandbox->checkKeyword('interface')){
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$this->sandbox->validationError("Keyword failed custom validation!", Error::VALID_KEYWORD_ERROR, $node, 'interface');
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}
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if(!$node->name){
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$this->sandbox->validationError("Sandboxed code attempted to define unnamed interface!", Error::DEFINE_INTERFACE_ERROR, $node, '');
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}
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if(!$this->sandbox->checkInterface($node->name)){
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$this->sandbox->validationError("Interface failed custom validation!", Error::VALID_INTERFACE_ERROR, $node, $node->name);
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}
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} else if($node instanceof Node\Stmt\Trait_){
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if(!$this->sandbox->allow_traits){
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$this->sandbox->validationError("Sandboxed code attempted to define trait!", Error::DEFINE_TRAIT_ERROR, $node);
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}
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if(!$this->sandbox->checkKeyword('trait')){
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$this->sandbox->validationError("Keyword failed custom validation!", Error::VALID_KEYWORD_ERROR, $node, 'trait');
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}
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if(!$node->name){
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$this->sandbox->validationError("Sandboxed code attempted to define unnamed trait!", Error::DEFINE_TRAIT_ERROR, $node, '');
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}
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if(!$this->sandbox->checkTrait($node->name)){
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$this->sandbox->validationError("Trait failed custom validation!", Error::VALID_TRAIT_ERROR, $node, $node->name);
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}
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} else if($node instanceof Node\Stmt\TraitUse){
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if(!$this->sandbox->checkKeyword('use')){
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$this->sandbox->validationError("Keyword failed custom validation!", Error::VALID_KEYWORD_ERROR, $node, 'use');
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}
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if(is_array($node->traits)){
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foreach($node->traits as $trait){
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/**
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* @var Node\Name $trait
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*/
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if(!$trait->toString()){
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$this->sandbox->validationError("Sandboxed code attempted to use unnamed trait!", Error::DEFINE_TRAIT_ERROR, $node, '');
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}
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if(!$this->sandbox->checkTrait($trait->toString())){
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$this->sandbox->validationError("Trait failed custom validation!", Error::VALID_TRAIT_ERROR, $node, $trait->toString());
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}
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}
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}
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} else if($node instanceof Node\Expr\Yield_){
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if(!$this->sandbox->allow_generators){
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$this->sandbox->validationError("Sandboxed code attempted to create a generator!", Error::GENERATOR_ERROR, $node);
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}
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if(!$this->sandbox->checkKeyword('yield')){
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$this->sandbox->validationError("Keyword failed custom validation!", Error::VALID_KEYWORD_ERROR, $node, 'yield');
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}
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} else if($node instanceof Node\Stmt\Global_){
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if(!$this->sandbox->allow_globals){
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$this->sandbox->validationError("Sandboxed code attempted to use global keyword!", Error::GLOBALS_ERROR, $node);
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}
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if(!$this->sandbox->checkKeyword('global')){
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$this->sandbox->validationError("Keyword failed custom validation!", Error::VALID_KEYWORD_ERROR, $node, 'global');
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}
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foreach($node->vars as $var){
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/**
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* @var Node\Expr\Variable $var
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*/
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if($var instanceof Node\Expr\Variable){
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if(!$this->sandbox->checkGlobal($var->name)){
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$this->sandbox->validationError("Global failed custom validation!", Error::VALID_GLOBAL_ERROR, $node, $var->name);
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}
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} else {
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$this->sandbox->validationError("Sandboxed code attempted to pass non-variable to global keyword!", Error::DEFINE_GLOBAL_ERROR, $node);
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}
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}
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} else if($node instanceof Node\Expr\Variable){
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if(!is_string($node->name)){
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$this->sandbox->validationError("Sandboxed code attempted dynamically-named variable call!", Error::DYNAMIC_VAR_ERROR, $node);
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}
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if($node->name == $this->sandbox->name){
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$this->sandbox->validationError("Sandboxed code attempted to access the PHPSandbox instance!", Error::SANDBOX_ACCESS_ERROR, $node);
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}
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if(in_array($node->name, PHPSandbox::$superglobals)){
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if(!$this->sandbox->checkSuperglobal($node->name)){
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$this->sandbox->validationError("Superglobal failed custom validation!", Error::VALID_SUPERGLOBAL_ERROR, $node, $node->name);
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}
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if($this->sandbox->overwrite_superglobals){
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return new Node\Expr\MethodCall(new Node\Expr\StaticCall(new Node\Name\FullyQualified("CloudObjects\\PhpMAE\\Sandbox\\CustomizedSandbox"), 'getGlobalSandbox'), '_get_superglobal', [new Node\Arg(new Node\Scalar\String_($node->name))], $node->getAttributes());
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}
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} else {
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if(!$this->sandbox->checkVar($node->name)){
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$this->sandbox->validationError("Variable failed custom validation!", Error::VALID_VAR_ERROR, $node, $node->name);
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}
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}
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} else if($node instanceof Node\Stmt\StaticVar){
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if(!$this->sandbox->allow_static_variables){
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$this->sandbox->validationError("Sandboxed code attempted to create static variable!", Error::STATIC_VAR_ERROR, $node);
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}
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if(!is_string($node->name)){
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$this->sandbox->validationError("Sandboxed code attempted dynamically-named static variable call!", Error::DYNAMIC_STATIC_VAR_ERROR, $node);
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}
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if(!$this->sandbox->checkVar($node->name)){
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$this->sandbox->validationError("Variable failed custom validation!", Error::VALID_VAR_ERROR, $node, $node->name);
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}
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if($node->default instanceof Node\Expr\New_){
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$node->default = $node->default->args[0];
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}
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} else if($node instanceof Node\Stmt\Const_){
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$this->sandbox->validationError("Sandboxed code cannot use const keyword in the global scope!", Error::GLOBAL_CONST_ERROR, $node);
|
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} else if($node instanceof Node\Expr\ConstFetch){
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if(!$node->name instanceof Node\Name){
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||||
$this->sandbox->validationError("Sandboxed code attempted dynamically-named constant call!", Error::DYNAMIC_CONST_ERROR, $node);
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}
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if(!$this->sandbox->checkConst($node->name->toString())){
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||||
$this->sandbox->validationError("Constant failed custom validation!", Error::VALID_CONST_ERROR, $node, $node->name->toString());
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}
|
||||
} else if($node instanceof Node\Expr\ClassConstFetch || $node instanceof Node\Expr\StaticCall || $node instanceof Node\Expr\StaticPropertyFetch){
|
||||
$class = $node->class;
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||||
if(!$class instanceof Node\Name){
|
||||
$this->sandbox->validationError("Sandboxed code attempted dynamically-named class call!", Error::DYNAMIC_CLASS_ERROR, $node);
|
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}
|
||||
if($this->sandbox->isDefinedClass($class)){
|
||||
$node->class = new Node\Name($this->sandbox->getDefinedClass($class));
|
||||
}
|
||||
/**
|
||||
* @var Node\Name $class
|
||||
*/
|
||||
if(!$this->sandbox->checkClass($class->toString())){
|
||||
$this->sandbox->validationError("Class constant failed custom validation!", Error::VALID_CLASS_ERROR, $node, $class->toString());
|
||||
}
|
||||
return $node;
|
||||
} else if($node instanceof Node\Param && $node->type instanceof Node\Name){
|
||||
$class = $node->type->toString();
|
||||
if($this->sandbox->isDefinedClass($class)){
|
||||
$node->type = new Node\Name($this->sandbox->getDefinedClass($class));
|
||||
}
|
||||
return $node;
|
||||
} else if($node instanceof Node\Expr\New_){
|
||||
if(!$this->sandbox->allow_objects){
|
||||
$this->sandbox->validationError("Sandboxed code attempted to create object!", Error::CREATE_OBJECT_ERROR, $node);
|
||||
}
|
||||
if(!$this->sandbox->checkKeyword('new')){
|
||||
$this->sandbox->validationError("Keyword failed custom validation!", Error::VALID_KEYWORD_ERROR, $node, 'new');
|
||||
}
|
||||
if(!$node->class instanceof Node\Name){
|
||||
$this->sandbox->validationError("Sandboxed code attempted dynamically-named class call!", Error::DYNAMIC_CLASS_ERROR, $node);
|
||||
}
|
||||
$class = $node->class->toString();
|
||||
if($this->sandbox->isDefinedClass($class)){
|
||||
$node->class = new Node\Name($this->sandbox->getDefinedClass($class));
|
||||
}
|
||||
$this->sandbox->checkType($class);
|
||||
return $node;
|
||||
} else if($node instanceof Node\Expr\ErrorSuppress){
|
||||
if(!$this->sandbox->allow_error_suppressing){
|
||||
$this->sandbox->validationError("Sandboxed code attempted to suppress error!", Error::ERROR_SUPPRESS_ERROR, $node);
|
||||
}
|
||||
} else if($node instanceof Node\Expr\AssignRef){
|
||||
if(!$this->sandbox->allow_references){
|
||||
$this->sandbox->validationError("Sandboxed code attempted to assign by reference!", Error::BYREF_ERROR, $node);
|
||||
}
|
||||
} else if($node instanceof Node\Stmt\HaltCompiler){
|
||||
if(!$this->sandbox->allow_halting){
|
||||
$this->sandbox->validationError("Sandboxed code attempted to halt compiler!", Error::HALT_ERROR, $node);
|
||||
}
|
||||
if(!$this->sandbox->checkKeyword('halt')){
|
||||
$this->sandbox->validationError("Keyword failed custom validation!", Error::VALID_KEYWORD_ERROR, $node, 'halt');
|
||||
}
|
||||
} else if($node instanceof Node\Stmt\Namespace_){
|
||||
if(!$this->sandbox->allow_namespaces){
|
||||
$this->sandbox->validationError("Sandboxed code attempted to define namespace!", Error::DEFINE_NAMESPACE_ERROR, $node);
|
||||
}
|
||||
if(!$this->sandbox->checkKeyword('namespace')){
|
||||
$this->sandbox->validationError("Keyword failed custom validation!", Error::VALID_KEYWORD_ERROR, $node, 'namespace');
|
||||
}
|
||||
if($node->name instanceof Node\Name){
|
||||
$namespace = $node->name->toString();
|
||||
$this->sandbox->checkNamespace($namespace);
|
||||
if(!$this->sandbox->isDefinedNamespace($namespace)){
|
||||
$this->sandbox->defineNamespace($namespace);
|
||||
}
|
||||
} else {
|
||||
$this->sandbox->validationError("Sandboxed code attempted use invalid namespace!", Error::DEFINE_NAMESPACE_ERROR, $node);
|
||||
}
|
||||
return $node->stmts;
|
||||
} else if($node instanceof Node\Stmt\Use_){
|
||||
if(!$this->sandbox->allow_aliases){
|
||||
$this->sandbox->validationError("Sandboxed code attempted to use namespace and/or alias!", Error::DEFINE_ALIAS_ERROR, $node);
|
||||
}
|
||||
if(!$this->sandbox->checkKeyword('use')){
|
||||
$this->sandbox->validationError("Keyword failed custom validation!", Error::VALID_KEYWORD_ERROR, $node, 'use');
|
||||
}
|
||||
foreach($node->uses as $use){
|
||||
/**
|
||||
* @var Node\Stmt\UseUse $use
|
||||
*/
|
||||
if($use instanceof Node\Stmt\UseUse && $use->name instanceof Node\Name && (is_string($use->alias) || is_null($use->alias))){
|
||||
$this->sandbox->checkAlias($use->name->toString());
|
||||
if($use->alias){
|
||||
if(!$this->sandbox->checkKeyword('as')){
|
||||
$this->sandbox->validationError("Keyword failed custom validation!", Error::VALID_KEYWORD_ERROR, $node, 'as');
|
||||
}
|
||||
}
|
||||
$this->sandbox->defineAlias($use->name->toString(), $use->alias);
|
||||
} else {
|
||||
$this->sandbox->validationError("Sandboxed code attempted use invalid namespace or alias!", Error::DEFINE_ALIAS_ERROR, $node);
|
||||
}
|
||||
}
|
||||
return false;
|
||||
} else if($node instanceof Node\Expr\ShellExec){
|
||||
if($this->sandbox->isDefinedFunc('shell_exec')){
|
||||
$args = [
|
||||
new Node\Arg(new Node\Scalar\String_('shell_exec')),
|
||||
new Node\Arg(new Node\Scalar\String_(implode('', $node->parts)))
|
||||
];
|
||||
return new Node\Expr\MethodCall(new Node\Expr\StaticCall(new Node\Name\FullyQualified("CloudObjects\\PhpMAE\\Sandbox\\CustomizedSandbox"), 'getGlobalSandbox'), 'call_func', $args, $node->getAttributes());
|
||||
}
|
||||
if($this->sandbox->hasWhitelistedFuncs()){
|
||||
if(!$this->sandbox->isWhitelistedFunc('shell_exec')){
|
||||
$this->sandbox->validationError("Sandboxed code attempted to use shell execution backticks when the shell_exec function is not whitelisted!", Error::BACKTICKS_ERROR, $node);
|
||||
}
|
||||
} else if($this->sandbox->hasBlacklistedFuncs() && $this->sandbox->isBlacklistedFunc('shell_exec')){
|
||||
$this->sandbox->validationError("Sandboxed code attempted to use shell execution backticks when the shell_exec function is blacklisted!", Error::BACKTICKS_ERROR, $node);
|
||||
}
|
||||
if(!$this->sandbox->allow_backticks){
|
||||
$this->sandbox->validationError("Sandboxed code attempted to use shell execution backticks!", Error::BACKTICKS_ERROR, $node);
|
||||
}
|
||||
} else if($name = $this->isMagicConst($node)){
|
||||
if(!$this->sandbox->checkMagicConst($name)){
|
||||
$this->sandbox->validationError("Magic constant failed custom validation!", Error::VALID_MAGIC_CONST_ERROR, $node, $name);
|
||||
}
|
||||
if($this->sandbox->isDefinedMagicConst($name)){
|
||||
return new Node\Expr\MethodCall(new Node\Expr\StaticCall(new Node\Name\FullyQualified("CloudObjects\\PhpMAE\\Sandbox\\CustomizedSandbox"), 'getGlobalSandbox'), '_get_magic_const', [new Node\Arg(new Node\Scalar\String_($name))], $node->getAttributes());
|
||||
}
|
||||
} else if($name = $this->isKeyword($node)){
|
||||
if(!$this->sandbox->checkKeyword($name)){
|
||||
$this->sandbox->validationError("Keyword failed custom validation!", Error::VALID_KEYWORD_ERROR, $node, $name);
|
||||
}
|
||||
if($node instanceof Node\Expr\Include_ && !$this->sandbox->allow_includes){
|
||||
$this->sandbox->validationError("Sandboxed code attempted to include files!", Error::INCLUDE_ERROR, $node, $name);
|
||||
} else if($node instanceof Node\Expr\Include_ &&
|
||||
(
|
||||
($node->type == Node\Expr\Include_::TYPE_INCLUDE && $this->sandbox->isDefinedFunc('include'))
|
||||
|| ($node->type == Node\Expr\Include_::TYPE_INCLUDE_ONCE && $this->sandbox->isDefinedFunc('include_once'))
|
||||
|| ($node->type == Node\Expr\Include_::TYPE_REQUIRE && $this->sandbox->isDefinedFunc('require'))
|
||||
|| ($node->type == Node\Expr\Include_::TYPE_REQUIRE_ONCE && $this->sandbox->isDefinedFunc('require_once'))
|
||||
)){
|
||||
return new Node\Expr\MethodCall(new Node\Expr\StaticCall(new Node\Name\FullyQualified("CloudObjects\\PhpMAE\\Sandbox\\CustomizedSandbox"), 'getGlobalSandbox'), 'call_func', [new Node\Arg(new Node\Scalar\String_($name)), new Node\Arg($node->expr)], $node->getAttributes());
|
||||
} else if($node instanceof Node\Expr\Include_ && $this->sandbox->sandbox_includes){
|
||||
switch($node->type){
|
||||
case Node\Expr\Include_::TYPE_INCLUDE_ONCE:
|
||||
return new Node\Expr\MethodCall(new Node\Expr\StaticCall(new Node\Name\FullyQualified("CloudObjects\\PhpMAE\\Sandbox\\CustomizedSandbox"), 'getGlobalSandbox'), '_include_once', [new Node\Arg($node->expr)], $node->getAttributes());
|
||||
break;
|
||||
case Node\Expr\Include_::TYPE_REQUIRE:
|
||||
return new Node\Expr\MethodCall(new Node\Expr\StaticCall(new Node\Name\FullyQualified("CloudObjects\\PhpMAE\\Sandbox\\CustomizedSandbox"), 'getGlobalSandbox'), '_require', [new Node\Arg($node->expr)], $node->getAttributes());
|
||||
break;
|
||||
case Node\Expr\Include_::TYPE_REQUIRE_ONCE:
|
||||
return new Node\Expr\MethodCall(new Node\Expr\StaticCall(new Node\Name\FullyQualified("CloudObjects\\PhpMAE\\Sandbox\\CustomizedSandbox"), 'getGlobalSandbox'), '_require_once', [new Node\Arg($node->expr)], $node->getAttributes());
|
||||
break;
|
||||
case Node\Expr\Include_::TYPE_INCLUDE:
|
||||
default:
|
||||
return new Node\Expr\MethodCall(new Node\Expr\StaticCall(new Node\Name\FullyQualified("CloudObjects\\PhpMAE\\Sandbox\\CustomizedSandbox"), 'getGlobalSandbox'), '_include', [new Node\Arg($node->expr)], $node->getAttributes());
|
||||
break;
|
||||
}
|
||||
}
|
||||
} else if($name = $this->isOperator($node)){
|
||||
if(!$this->sandbox->checkOperator($name)){
|
||||
$this->sandbox->validationError("Operator failed custom validation!", Error::VALID_OPERATOR_ERROR, $node, $name);
|
||||
}
|
||||
} else if($name = $this->isPrimitive($node)){
|
||||
if(!$this->sandbox->checkPrimitive($name)){
|
||||
$this->sandbox->validationError("Primitive failed custom validation!", Error::VALID_PRIMITIVE_ERROR, $node, $name);
|
||||
}
|
||||
}
|
||||
return null;
|
||||
}
|
||||
|
||||
}
|
||||
@@ -0,0 +1,34 @@
|
||||
<?php
|
||||
|
||||
/* This Source Code Form is subject to the terms of the Mozilla Public
|
||||
* License, v. 2.0. If a copy of the MPL was not distributed with this
|
||||
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
|
||||
|
||||
namespace CloudObjects\PhpMAE\Sandbox;
|
||||
|
||||
use CloudObjects\PhpMAE\Exceptions\PhpMAEException;
|
||||
|
||||
class FunctionExecutor {
|
||||
|
||||
private static $trusted = false;
|
||||
private static $packageWhitelist = [ 'function_exists', 'extension_loaded',
|
||||
'defined', 'ini_get', 'is_callable', 'class_exists', 'get_called_class',
|
||||
'stream_for' ];
|
||||
|
||||
public static function setTrusted(bool $trusted) {
|
||||
self::$trusted = $trusted;
|
||||
}
|
||||
|
||||
public static function execute() {
|
||||
$call = func_get_args();
|
||||
if (self::$trusted == true || in_array($call[0], self::$packageWhitelist))
|
||||
return call_user_func_array($call[0], array_slice($call, 1));
|
||||
else
|
||||
throw new PhpMAEException("A package attempted to call the non-whitelisted PHP function ".$call[0]."()!");
|
||||
}
|
||||
|
||||
public static function returnNull() {
|
||||
return null;
|
||||
}
|
||||
|
||||
}
|
||||
@@ -0,0 +1,38 @@
|
||||
<?php
|
||||
|
||||
/* This Source Code Form is subject to the terms of the Mozilla Public
|
||||
* License, v. 2.0. If a copy of the MPL was not distributed with this
|
||||
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
|
||||
|
||||
namespace CloudObjects\PhpMAE\Sandbox;
|
||||
|
||||
use PhpParser\Node, PhpParser\NodeVisitorAbstract;
|
||||
use PHPSandbox\PHPSandbox, PHPSandbox\Error;
|
||||
|
||||
class FunctionExecutorWrapperVisitor extends NodeVisitorAbstract {
|
||||
|
||||
private $sandbox;
|
||||
|
||||
public function __construct(PHPSandbox $sandbox) {
|
||||
$this->sandbox = $sandbox;
|
||||
}
|
||||
|
||||
public function leaveNode(Node $node){
|
||||
if ($node instanceof Node\Expr\FuncCall) {
|
||||
if($node->name instanceof Node\Name) {
|
||||
$name = strtolower($node->name->toString());
|
||||
try {
|
||||
$this->sandbox->checkFunc($name);
|
||||
} catch (\Exception $e) {
|
||||
return new Node\Expr\StaticCall(
|
||||
new Node\Name\FullyQualified("CloudObjects\\PhpMAE\\Sandbox\\FunctionExecutor"), 'execute',
|
||||
array_merge([ new Node\Scalar\String_($name) ], $node->args),
|
||||
$node->getAttributes());
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
return null;
|
||||
}
|
||||
|
||||
}
|
||||
Reference in New Issue
Block a user