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<?php
/**
* @copyright Copyright (c) 2016 Lukas Reschke <lukas@statuscode.ch>
*
* @license GNU AGPL version 3 or any later version
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU Affero General Public License as
* published by the Free Software Foundation, either version 3 of the
* License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Affero General Public License for more details.
*
* You should have received a copy of the GNU Affero General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*
*/
namespace Instrumentalizator\Visitor;
use PhpParser\Node;
use PhpParser\NodeVisitorAbstract;
class PublicFunctionVisitor extends NodeVisitorAbstract {
/**
* @param array $originalArray
* @param mixed $value
* @param int $key
* @return array
*/
private function insertBeforeKey(array $originalArray, $value, $key) {
$newArray = [];
for ($i = 0; $i <= count($originalArray) - 1; $i++) {
$originalKey = $i;
if($i === $key) {
$newArray[$i] = $value;
$originalKey = $i;
$i++;
}
$newArray[$i] = $originalArray[$originalKey];
}
return $newArray;
}
public function enterNode(Node $node) {
if($node instanceof Node\Stmt\ClassMethod) {
/** @var Node\Param[] $params */
$params = $node->getParams();
// Replaces the parameters in a function call with an injected GET parameter
if($node->name !== '__construct' &&
$node->flags === Node\Stmt\Class_::MODIFIER_PUBLIC) {
foreach ($params as $param) {
$var = new Node\Expr\Variable($param->name);
$expr = new Node\Expr\Variable('_GET');
$expr = new Node\Expr\ArrayDimFetch($expr, new Node\Scalar\String_($param->name));
array_unshift($node->stmts, new Node\Expr\Assign($var, $expr));
}
$node->params = [];
}
// Replaces the "return new JSONResponse" with an actual echo of the value
/** @var Node\Stmt $subNode */
foreach($node->getStmts() as $key => $subNode) {
if($subNode instanceof Node\Stmt\Return_) {
/** @var Node\Expr $newNode */
$newNode = $subNode->expr;
$className = $newNode->class->parts[0];
if($className === 'JSONResponse') {
$args = new Node\Arg(new Node\Expr\FuncCall(new Node\Name('json_encode'), $newNode->args));
$node->stmts[$key] = new Node\Stmt\Echo_([$args]);
}
$arg = new Node\Arg(new Node\Scalar\String_('Content-Type:application/json; charset=utf-8'));
$header = new Node\Expr\FuncCall(new Node\Name('header'), [$arg]);
$node->stmts = $this->insertBeforeKey($node->stmts, $header, $key);
$arg = new Node\Arg(new Node\Scalar\String_('X-Content-Type-Options: nosniff'));
$header = new Node\Expr\FuncCall(new Node\Name('header'), [$arg]);
$node->stmts = $this->insertBeforeKey($node->stmts, $header, $key + 1);
}
}
}
return $node;
}
}
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