mirror of
https://github.com/danog/psalm.git
synced 2024-12-11 16:59:45 +01:00
63953d5676
This turns unused variable detection into an explicit control-flow problem, where before we had a more simplistic mark-and-sweep algorithm
1550 lines
57 KiB
PHP
1550 lines
57 KiB
PHP
<?php
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namespace Psalm\Tests;
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use Psalm\Context;
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use const DIRECTORY_SEPARATOR;
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class TaintTest extends TestCase
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{
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/**
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* @dataProvider providerValidCodeParse
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*
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*
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*/
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public function testValidCode(string $code): void
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{
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$test_name = $this->getTestName();
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if (\strpos($test_name, 'SKIPPED-') !== false) {
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$this->markTestSkipped('Skipped due to a bug.');
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}
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if (\strtoupper(\substr(\PHP_OS, 0, 3)) === 'WIN') {
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$this->markTestSkipped('Skip taint tests in Windows for now');
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}
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$file_path = self::$src_dir_path . 'somefile.php';
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$this->addFile(
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$file_path,
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$code
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);
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$this->project_analyzer->trackTaintedInputs();
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$this->analyzeFile($file_path, new Context(), false);
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}
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/**
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* @dataProvider providerInvalidCodeParse
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*
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*
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*/
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public function testInvalidCode(string $code, string $error_message): void
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{
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if (\strpos($this->getTestName(), 'SKIPPED-') !== false) {
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$this->markTestSkipped();
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}
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if (\strtoupper(\substr(\PHP_OS, 0, 3)) === 'WIN') {
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$this->markTestSkipped('Skip taint tests in Windows for now');
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}
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$this->expectException(\Psalm\Exception\CodeException::class);
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$this->expectExceptionMessageRegExp('/\b' . \preg_quote($error_message, '/') . '\b/');
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$file_path = self::$src_dir_path . 'somefile.php';
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$this->addFile(
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$file_path,
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$code
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);
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$this->project_analyzer->trackTaintedInputs();
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$this->analyzeFile($file_path, new Context(), false);
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}
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/**
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* @return array<string, array{string}>
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*/
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public function providerValidCodeParse(): array
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{
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return [
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'taintedInputInCreatedArrayNotEchoed' => [
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'<?php
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$name = $_GET["name"] ?? "unknown";
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$id = (int) $_GET["id"];
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$data = ["name" => $name, "id" => $id];
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echo "<h1>" . htmlentities($data["name"]) . "</h1>";
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echo "<p>" . $data["id"] . "</p>";'
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],
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'taintedInputInAssignedArrayNotEchoed' => [
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'<?php
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$name = $_GET["name"] ?? "unknown";
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$id = (int) $_GET["id"];
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$data = [];
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$data["name"] = $name;
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$data["id"] = $id;
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echo "<h1>" . htmlentities($data["name"]) . "</h1>";
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echo "<p>" . $data["id"] . "</p>";'
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],
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'taintedInputDirectlySuppressed' => [
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'<?php
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class A {
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public function deleteUser(PDO $pdo) : void {
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/** @psalm-taint-escape sql */
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$userId = (string) $_GET["user_id"];
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$pdo->exec("delete from users where user_id = " . $userId);
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}
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}'
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],
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'taintedInputDirectlySuppressedWithOtherUse' => [
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'<?php
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class A {
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public function deleteUser(PDOWrapper $pdo) : void {
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/**
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* @psalm-taint-escape sql
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*/
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$userId = (string) $_GET["user_id"];
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$pdo->exec("delete from users where user_id = " . $userId);
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}
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public function deleteUserSafer(PDOWrapper $pdo) : void {
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$userId = $this->getSafeId();
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$pdo->exec("delete from users where user_id = " . $userId);
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}
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public function getSafeId() : string {
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return "5";
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}
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}
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class PDOWrapper {
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/**
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* @psalm-taint-sink sql $sql
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*/
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public function exec(string $sql) : void {}
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}'
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],
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'taintedInputToParamButSafe' => [
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'<?php
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class A {
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public function getUserId(PDO $pdo) : void {
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$this->deleteUser(
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$pdo,
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$this->getAppendedUserId((string) $_GET["user_id"])
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);
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}
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public function getAppendedUserId(string $user_id) : string {
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return "aaa" . $user_id;
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}
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public function deleteUser(PDO $pdo, string $userId) : void {
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$userId2 = strlen($userId);
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$pdo->exec("delete from users where user_id = " . $userId2);
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}
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}'
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],
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'ValidatedInputFromParam' => [
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'<?php
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/**
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* @psalm-assert-untainted $userId
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*/
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function validateUserId(string $userId) : void {
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if (!is_numeric($userId)) {
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throw new \Exception("bad");
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}
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}
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class A {
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public function getUserId() : string {
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return (string) $_GET["user_id"];
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}
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public function doDelete(PDO $pdo) : void {
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$userId = $this->getUserId();
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validateUserId($userId);
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$this->deleteUser($pdo, $userId);
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}
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public function deleteUser(PDO $pdo, string $userId) : void {
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$pdo->exec("delete from users where user_id = " . $userId);
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}
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}'
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],
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'untaintedInputAfterIntCast' => [
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'<?php
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class A {
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public function getUserId() : int {
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return (int) $_GET["user_id"];
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}
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public function getAppendedUserId() : string {
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return "aaaa" . $this->getUserId();
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}
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public function deleteUser(PDO $pdo) : void {
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$userId = $this->getAppendedUserId();
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$pdo->exec("delete from users where user_id = " . $userId);
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}
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}'
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],
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'specializedCoreFunctionCall' => [
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'<?php
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$a = (string) $_GET["user_id"];
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echo print_r([], true);
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$b = print_r($a, true);'
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],
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'untaintedInputViaStaticFunctionWithSafePath' => [
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'<?php
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class Utils {
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/**
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* @psalm-pure
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*/
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public static function shorten(string $str) : string {
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return $str;
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}
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}
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class A {
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public function foo() : void {
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echo(htmlentities(Utils::shorten((string) $_GET["user_id"])));
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}
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public function bar() : void {
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echo(Utils::shorten("hello"));
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}
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}'
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],
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'taintHtmlEntities' => [
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'<?php
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function foo() : void {
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$a = htmlentities((string) $_GET["bad"]);
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echo $a;
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}'
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],
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'taintOnStrReplaceCallRemovedInFunction' => [
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'<?php
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class U {
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/**
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* @psalm-pure
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* @psalm-taint-escape html
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*/
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public static function shorten(string $s) : string {
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return str_replace("foo", "bar", $s);
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}
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}
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class V {}
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class O1 {
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public string $s;
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public function __construct() {
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$this->s = (string) $_GET["FOO"];
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}
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}
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class V1 extends V {
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public function foo(O1 $o) : void {
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echo U::shorten($o->s);
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}
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}'
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],
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'taintOnPregReplaceCallRemovedInFunction' => [
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'<?php
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class U {
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/**
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* @psalm-pure
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*/
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public static function shorten(string $s) : string {
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return preg_replace("/[^_a-z\/\.A-Z0-9]/", "bar", $s);
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}
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}
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class V {}
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class O1 {
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public string $s;
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public function __construct() {
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$this->s = (string) $_GET["FOO"];
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}
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}
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class V1 extends V {
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public function foo(O1 $o) : void {
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echo U::shorten($o->s);
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}
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}'
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],
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'taintOnStrReplaceCallRemovedInline' => [
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'<?php
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class V {}
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class O1 {
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public string $s;
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public function __construct() {
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$this->s = (string) $_GET["FOO"];
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}
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}
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class V1 extends V {
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public function foo(O1 $o) : void {
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/**
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* @psalm-taint-escape html
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*/
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$a = str_replace("foo", "bar", $o->s);
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echo $a;
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}
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}'
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],
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'NoTaintsOnSimilarPureCall' => [
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'<?php
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class U {
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/** @psalm-pure */
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public static function shorten(string $s) : string {
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return substr($s, 0, 15);
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}
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/** @psalm-pure */
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public static function escape(string $s) : string {
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return htmlentities($s);
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}
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}
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class O1 {
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public string $s;
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public function __construct(string $s) {
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$this->s = $s;
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}
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}
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class O2 {
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public string $t;
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public function __construct() {
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$this->t = (string) $_GET["FOO"];
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}
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}
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class V1 {
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public function foo() : void {
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$o = new O1((string) $_GET["FOO"]);
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echo U::escape(U::shorten($o->s));
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}
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}
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class V2 {
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public function foo(O2 $o) : void {
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echo U::shorten(U::escape($o->t));
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}
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}'
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],
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'taintPropertyPassingObjectWithDifferentValue' => [
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'<?phps
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/** @psalm-immutable */
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class User {
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public string $id;
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public $name = "Luke";
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public function __construct(string $userId) {
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$this->id = $userId;
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}
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}
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class UserUpdater {
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public static function doDelete(PDO $pdo, User $user) : void {
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self::deleteUser($pdo, $user->name);
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}
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public static function deleteUser(PDO $pdo, string $userId) : void {
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$pdo->exec("delete from users where user_id = " . $userId);
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}
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}
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$userObj = new User((string) $_GET["user_id"]);
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UserUpdater::doDelete(new PDO(), $userObj);'
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],
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'taintPropertyWithoutPassingObject' => [
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'<?phps
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/** @psalm-immutable */
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class User {
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public string $id;
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public function __construct(string $userId) {
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$this->id = $userId;
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}
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}
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class UserUpdater {
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public static function doDelete(PDO $pdo, User $user) : void {
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self::deleteUser($pdo, $user->id);
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}
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public static function deleteUser(PDO $pdo, string $userId) : void {
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$pdo->exec("delete from users where user_id = " . $userId);
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}
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}
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$userObj = new User((string) $_GET["user_id"]);',
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],
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'specializeStaticMethod' => [
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'<?php
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StringUtility::foo($_GET["c"]);
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class StringUtility {
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/**
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* @psalm-taint-specialize
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*/
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public static function foo(string $str) : string
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{
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return $str;
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}
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/**
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* @psalm-taint-specialize
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*/
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public static function slugify(string $url) : string {
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return self::foo($url);
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}
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}
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echo StringUtility::slugify("hello");'
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],
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'taintFreeNestedArray' => [
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'<?php
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$a = [];
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$a[] = ["a" => $_GET["name"], "b" => "foo"];
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foreach ($a as $m) {
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echo $m["b"];
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}'
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],
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'taintFreeNestedArrayWithOffsetAccessedExplicitly' => [
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'<?php
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$a = [];
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$a[] = ["a" => $_GET["name"], "b" => "foo"];
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echo $a[0]["b"];',
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],
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'intUntainted' => [
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'<?php
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$input = $_GET[\'input\'];
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if (is_int($input)) {
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echo "$input";
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}',
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],
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'dontTaintSpecializedInstanceProperty' => [
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'<?php
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/** @psalm-taint-specialize */
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class StringHolder {
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public $x;
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public function __construct(string $x) {
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$this->x = $x;
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}
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}
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$a = new StringHolder("a");
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$b = new StringHolder($_GET["x"]);
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echo $a->x;'
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],
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'suppressTaintedInput' => [
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'<?php
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function unsafe() {
|
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/**
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* @psalm-suppress TaintedInput
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*/
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echo $_GET["x"];
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}'
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],
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'suppressTaintedAssignment' => [
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'<?php
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$b = $_GET["x"];
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/**
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* @psalm-suppress TaintedInput
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*/
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$a = $b;
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|
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echo $a;'
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]
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];
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}
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|
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/**
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* @return array<string, array{0: string, error_message: string}>
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*/
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public function providerInvalidCodeParse(): array
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{
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return [
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'taintedInputFromMethodReturnTypeSimple' => [
|
|
'<?php
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class A {
|
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public function getUserId() : string {
|
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return (string) $_GET["user_id"];
|
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}
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|
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|
public function getAppendedUserId() : string {
|
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return "aaaa" . $this->getUserId();
|
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}
|
|
|
|
public function deleteUser(PDO $pdo) : void {
|
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$userId = $this->getAppendedUserId();
|
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$pdo->exec("delete from users where user_id = " . $userId);
|
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}
|
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}',
|
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'error_message' => 'TaintedInput',
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|
],
|
|
'taintedInputFromFunctionReturnType' => [
|
|
'<?php
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function getName() : string {
|
|
return $_GET["name"] ?? "unknown";
|
|
}
|
|
|
|
echo getName();',
|
|
'error_message' => 'TaintedInput - src' . DIRECTORY_SEPARATOR . 'somefile.php:6:26 - Detected tainted html in path: $_GET -> $_GET[\'name\'] (src/somefile.php:3:32) -> coalesce (src/somefile.php:3:32) -> getName (src/somefile.php:2:42) -> call to echo (src/somefile.php:6:26) -> echo#1',
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],
|
|
'taintedInputFromExplicitTaintSource' => [
|
|
'<?php
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/**
|
|
* @psalm-taint-source input
|
|
*/
|
|
function getName() : string {
|
|
return "";
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|
}
|
|
|
|
echo getName();',
|
|
'error_message' => 'TaintedInput',
|
|
],
|
|
'taintedInputFromExplicitTaintSourceStaticMethod' => [
|
|
'<?php
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class Request {
|
|
/**
|
|
* @psalm-taint-source input
|
|
*/
|
|
public static function getName() : string {
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return "";
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}
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|
}
|
|
|
|
|
|
echo Request::getName();',
|
|
'error_message' => 'TaintedInput',
|
|
],
|
|
'taintedInputFromGetArray' => [
|
|
'<?php
|
|
function getName(array $data) : string {
|
|
return $data["name"] ?? "unknown";
|
|
}
|
|
|
|
$name = getName($_GET);
|
|
|
|
echo $name;',
|
|
'error_message' => 'TaintedInput',
|
|
],
|
|
'taintedInputFromReturnToInclude' => [
|
|
'<?php
|
|
$a = (string) $_GET["file"];
|
|
$b = "hello" . $a;
|
|
include str_replace("a", "b", $b);',
|
|
'error_message' => 'TaintedInput',
|
|
],
|
|
'taintedInputFromReturnToEval' => [
|
|
'<?php
|
|
$a = $_GET["file"];
|
|
eval("<?php" . $a);',
|
|
'error_message' => 'TaintedInput',
|
|
],
|
|
'taintedInputFromReturnTypeToEcho' => [
|
|
'<?php
|
|
class A {
|
|
public function getUserId() : string {
|
|
return (string) $_GET["user_id"];
|
|
}
|
|
|
|
public function getAppendedUserId() : string {
|
|
return "aaaa" . $this->getUserId();
|
|
}
|
|
|
|
public function deleteUser(PDO $pdo) : void {
|
|
$userId = $this->getAppendedUserId();
|
|
echo $userId;
|
|
}
|
|
}',
|
|
'error_message' => 'TaintedInput',
|
|
],
|
|
'taintedInputInCreatedArrayIsEchoed' => [
|
|
'<?php
|
|
$name = $_GET["name"] ?? "unknown";
|
|
|
|
$data = ["name" => $name];
|
|
|
|
echo "<h1>" . $data["name"] . "</h1>";',
|
|
'error_message' => 'TaintedInput',
|
|
],
|
|
'testTaintedInputInAssignedArrayIsEchoed' => [
|
|
'<?php
|
|
$name = $_GET["name"] ?? "unknown";
|
|
|
|
$data = [];
|
|
$data["name"] = $name;
|
|
|
|
echo "<h1>" . $data["name"] . "</h1>";',
|
|
'error_message' => 'TaintedInput',
|
|
],
|
|
'taintedInputDirectly' => [
|
|
'<?php
|
|
class A {
|
|
public function deleteUser(PDO $pdo) : void {
|
|
$userId = (string) $_GET["user_id"];
|
|
$pdo->exec("delete from users where user_id = " . $userId);
|
|
}
|
|
}',
|
|
'error_message' => 'TaintedInput',
|
|
],
|
|
'taintedInputFromReturnTypeWithBranch' => [
|
|
'<?php
|
|
class A {
|
|
public function getUserId() : string {
|
|
return (string) $_GET["user_id"];
|
|
}
|
|
|
|
public function getAppendedUserId() : string {
|
|
$userId = $this->getUserId();
|
|
|
|
if (rand(0, 1)) {
|
|
$userId .= "aaa";
|
|
} else {
|
|
$userId .= "bb";
|
|
}
|
|
|
|
return $userId;
|
|
}
|
|
|
|
public function deleteUser(PDO $pdo) : void {
|
|
$userId = $this->getAppendedUserId();
|
|
$pdo->exec("delete from users where user_id = " . $userId);
|
|
}
|
|
}',
|
|
'error_message' => 'TaintedInput',
|
|
],
|
|
'sinkAnnotation' => [
|
|
'<?php
|
|
class A {
|
|
public function getUserId() : string {
|
|
return (string) $_GET["user_id"];
|
|
}
|
|
|
|
public function getAppendedUserId() : string {
|
|
return "aaaa" . $this->getUserId();
|
|
}
|
|
|
|
public function deleteUser(PDOWrapper $pdo) : void {
|
|
$userId = $this->getAppendedUserId();
|
|
$pdo->exec("delete from users where user_id = " . $userId);
|
|
}
|
|
}
|
|
|
|
class PDOWrapper {
|
|
/**
|
|
* @psalm-taint-sink sql $sql
|
|
*/
|
|
public function exec(string $sql) : void {}
|
|
}',
|
|
'error_message' => 'TaintedInput',
|
|
],
|
|
'taintedInputFromParam' => [
|
|
'<?php
|
|
class A {
|
|
public function getUserId() : string {
|
|
return (string) $_GET["user_id"];
|
|
}
|
|
|
|
public function getAppendedUserId() : string {
|
|
return "aaaa" . $this->getUserId();
|
|
}
|
|
|
|
public function doDelete(PDO $pdo) : void {
|
|
$userId = $this->getAppendedUserId();
|
|
$this->deleteUser($pdo, $userId);
|
|
}
|
|
|
|
public function deleteUser(PDO $pdo, string $userId) : void {
|
|
$pdo->exec("delete from users where user_id = " . $userId);
|
|
}
|
|
}',
|
|
'error_message' => 'TaintedInput - src' . DIRECTORY_SEPARATOR . 'somefile.php:17:40 - Detected tainted sql in path: $_GET -> $_GET[\'user_id\'] (src/somefile.php:4:45) -> A::getUserId (src/somefile.php:3:55) -> concat (src/somefile.php:8:36) -> A::getAppendedUserId (src/somefile.php:7:63) -> $userId (src/somefile.php:12:29) -> call to A::deleteUser (src/somefile.php:13:53) -> A::deleteUser#2 (src/somefile.php:16:69) -> $userId (src/somefile.php:16:69) -> concat (src/somefile.php:17:40) -> call to PDO::exec (src/somefile.php:17:40) -> PDO::exec#1',
|
|
],
|
|
'taintedInputToParam' => [
|
|
'<?php
|
|
class A {
|
|
public function getUserId(PDO $pdo) : void {
|
|
$this->deleteUser(
|
|
$pdo,
|
|
$this->getAppendedUserId((string) $_GET["user_id"])
|
|
);
|
|
}
|
|
|
|
public function getAppendedUserId(string $user_id) : string {
|
|
return "aaa" . $user_id;
|
|
}
|
|
|
|
public function deleteUser(PDO $pdo, string $userId) : void {
|
|
$pdo->exec("delete from users where user_id = " . $userId);
|
|
}
|
|
}',
|
|
'error_message' => 'TaintedInput',
|
|
],
|
|
'taintedInputToParamAfterAssignment' => [
|
|
'<?php
|
|
class A {
|
|
public function getUserId(PDO $pdo) : void {
|
|
$this->deleteUser(
|
|
$pdo,
|
|
$this->getAppendedUserId((string) $_GET["user_id"])
|
|
);
|
|
}
|
|
|
|
public function getAppendedUserId(string $user_id) : string {
|
|
return "aaa" . $user_id;
|
|
}
|
|
|
|
public function deleteUser(PDO $pdo, string $userId) : void {
|
|
$userId2 = $userId;
|
|
$pdo->exec("delete from users where user_id = " . $userId2);
|
|
}
|
|
}',
|
|
'error_message' => 'TaintedInput',
|
|
],
|
|
'taintedInputToParamAlternatePath' => [
|
|
'<?php
|
|
class A {
|
|
public function getUserId(PDO $pdo) : void {
|
|
$this->deleteUser(
|
|
$pdo,
|
|
self::doFoo(),
|
|
$this->getAppendedUserId((string) $_GET["user_id"])
|
|
);
|
|
}
|
|
|
|
public function getAppendedUserId(string $user_id) : string {
|
|
return "aaa" . $user_id;
|
|
}
|
|
|
|
public static function doFoo() : string {
|
|
return "hello";
|
|
}
|
|
|
|
public function deleteUser(PDO $pdo, string $userId, string $userId2) : void {
|
|
$pdo->exec("delete from users where user_id = " . $userId);
|
|
|
|
if (rand(0, 1)) {
|
|
$pdo->exec("delete from users where user_id = " . $userId2);
|
|
}
|
|
}
|
|
}',
|
|
'error_message' => 'TaintedInput - src' . DIRECTORY_SEPARATOR . 'somefile.php:23:44 - Detected tainted sql in path: $_GET -> $_GET[\'user_id\'] (src/somefile.php:7:67) -> call to A::getAppendedUserId (src/somefile.php:7:58) -> A::getAppendedUserId#1 (src/somefile.php:11:66) -> $user_id (src/somefile.php:11:66) -> concat (src/somefile.php:12:36) -> A::getAppendedUserId (src/somefile.php:11:78) -> call to A::deleteUser (src/somefile.php:7:33) -> A::deleteUser#3 (src/somefile.php:19:85) -> $userId2 (src/somefile.php:19:85) -> concat (src/somefile.php:23:44) -> call to PDO::exec (src/somefile.php:23:44) -> PDO::exec#1',
|
|
],
|
|
'taintedInParentLoader' => [
|
|
'<?php
|
|
abstract class A {
|
|
abstract public static function loadPartial(string $sink) : void;
|
|
|
|
public static function loadFull(string $sink) : void {
|
|
static::loadPartial($sink);
|
|
}
|
|
}
|
|
|
|
function getPdo() : PDO {
|
|
return new PDO("connectionstring");
|
|
}
|
|
|
|
class AChild extends A {
|
|
public static function loadPartial(string $sink) : void {
|
|
getPdo()->exec("select * from foo where bar = " . $sink);
|
|
}
|
|
}
|
|
|
|
class AGrandChild extends AChild {}
|
|
|
|
class C {
|
|
public function foo(string $user_id) : void {
|
|
AGrandChild::loadFull($user_id);
|
|
}
|
|
}
|
|
|
|
(new C)->foo((string) $_GET["user_id"]);',
|
|
'error_message' => 'TaintedInput - src' . DIRECTORY_SEPARATOR . 'somefile.php:16:44 - Detected tainted sql in path: $_GET -> $_GET[\'user_id\'] (src/somefile.php:28:43) -> call to C::foo (src/somefile.php:28:34) -> C::foo#1 (src/somefile.php:23:52) -> $user_id (src/somefile.php:23:52) -> call to AGrandChild::loadFull (src/somefile.php:24:51) -> AGrandChild::loadFull#1 (src/somefile.php:5:64) -> A::loadFull#1 (src/somefile.php:24:51) -> $sink (src/somefile.php:5:64) -> call to A::loadPartial (src/somefile.php:6:49) -> A::loadPartial#1 (src/somefile.php:3:76) -> AChild::loadPartial#1 (src/somefile.php:6:49) -> $sink (src/somefile.php:15:67) -> concat (src/somefile.php:16:44) -> call to PDO::exec (src/somefile.php:16:44) -> PDO::exec#1',
|
|
],
|
|
'taintedInputFromProperty' => [
|
|
'<?php
|
|
class A {
|
|
public string $userId;
|
|
|
|
public function __construct() {
|
|
$this->userId = (string) $_GET["user_id"];
|
|
}
|
|
|
|
public function getAppendedUserId() : string {
|
|
return "aaaa" . $this->userId;
|
|
}
|
|
|
|
public function doDelete(PDO $pdo) : void {
|
|
$userId = $this->getAppendedUserId();
|
|
$this->deleteUser($pdo, $userId);
|
|
}
|
|
|
|
public function deleteUser(PDO $pdo, string $userId) : void {
|
|
$pdo->exec("delete from users where user_id = " . $userId);
|
|
}
|
|
}',
|
|
'error_message' => 'TaintedInput',
|
|
],
|
|
'taintedInputFromPropertyViaMixin' => [
|
|
'<?php
|
|
class A {
|
|
public string $userId;
|
|
|
|
public function __construct() {
|
|
$this->userId = (string) $_GET["user_id"];
|
|
}
|
|
}
|
|
|
|
/** @mixin A */
|
|
class B {
|
|
private A $a;
|
|
|
|
public function __construct(A $a) {
|
|
$this->a = $a;
|
|
}
|
|
|
|
public function __get(string $name) {
|
|
return $this->a->$name;
|
|
}
|
|
}
|
|
|
|
class C {
|
|
private B $b;
|
|
|
|
public function __construct(B $b) {
|
|
$this->b = $b;
|
|
}
|
|
|
|
public function getAppendedUserId() : string {
|
|
return "aaaa" . $this->b->userId;
|
|
}
|
|
|
|
public function doDelete(PDO $pdo) : void {
|
|
$userId = $this->getAppendedUserId();
|
|
$this->deleteUser($pdo, $userId);
|
|
}
|
|
|
|
public function deleteUser(PDO $pdo, string $userId) : void {
|
|
$pdo->exec("delete from users where user_id = " . $userId);
|
|
}
|
|
}',
|
|
'error_message' => 'TaintedInput',
|
|
],
|
|
'taintedInputViaStaticFunction' => [
|
|
'<?php
|
|
class Utils {
|
|
public static function shorten(string $str) : string {
|
|
return $str;
|
|
}
|
|
}
|
|
|
|
class A {
|
|
public function foo() : void {
|
|
echo(Utils::shorten((string) $_GET["user_id"]));
|
|
}
|
|
}',
|
|
'error_message' => 'TaintedInput',
|
|
],
|
|
'taintedInputViaPureStaticFunction' => [
|
|
'<?php
|
|
class Utils {
|
|
/**
|
|
* @psalm-pure
|
|
*/
|
|
public static function shorten(string $str) : string {
|
|
return substr($str, 0, 100);
|
|
}
|
|
}
|
|
|
|
class A {
|
|
public function foo() : void {
|
|
echo(Utils::shorten((string) $_GET["user_id"]));
|
|
}
|
|
}',
|
|
'error_message' => 'TaintedInput',
|
|
],
|
|
'untaintedInputViaStaticFunctionWithoutSafePath' => [
|
|
'<?php
|
|
class Utils {
|
|
/**
|
|
* @psalm-pure
|
|
*/
|
|
public static function shorten(string $str) : string {
|
|
return $str;
|
|
}
|
|
}
|
|
|
|
class A {
|
|
public function foo() : void {
|
|
echo(Utils::shorten((string) $_GET["user_id"]));
|
|
}
|
|
|
|
public function bar() : void {
|
|
echo(Utils::shorten("hello"));
|
|
}
|
|
}',
|
|
'error_message' => 'TaintedInput',
|
|
],
|
|
'taintedInputFromMagicProperty' => [
|
|
'<?php
|
|
/**
|
|
* @property string $userId
|
|
*/
|
|
class A {
|
|
/** @var array<string, string> */
|
|
private $vars = [];
|
|
|
|
public function __get(string $s) : string {
|
|
return $this->vars[$s];
|
|
}
|
|
|
|
public function __set(string $s, string $t) {
|
|
$this->vars[$s] = $t;
|
|
}
|
|
}
|
|
|
|
function getAppendedUserId() : void {
|
|
$a = new A();
|
|
$a->userId = (string) $_GET["user_id"];
|
|
echo $a->userId;
|
|
}',
|
|
'error_message' => 'TaintedInput',
|
|
],
|
|
'taintOverMixed' => [
|
|
'<?php
|
|
/**
|
|
* @psalm-suppress MixedAssignment
|
|
* @psalm-suppress MixedArgument
|
|
*/
|
|
function foo() : void {
|
|
$a = $_GET["bad"];
|
|
echo $a;
|
|
}',
|
|
'error_message' => 'TaintedInput',
|
|
],
|
|
'taintStrConversion' => [
|
|
'<?php
|
|
function foo() : void {
|
|
$a = strtoupper(strtolower((string) $_GET["bad"]));
|
|
echo $a;
|
|
}',
|
|
'error_message' => 'TaintedInput',
|
|
],
|
|
'taintIntoExec' => [
|
|
'<?php
|
|
function foo() : void {
|
|
$a = (string) $_GET["bad"];
|
|
exec($a);
|
|
}',
|
|
'error_message' => 'TaintedInput',
|
|
],
|
|
'taintIntoExecMultipleConcat' => [
|
|
'<?php
|
|
function foo() : void {
|
|
$a = "9" . "a" . "b" . "c" . ((string) $_GET["bad"]) . "d" . "e" . "f";
|
|
exec($a);
|
|
}',
|
|
'error_message' => 'TaintedInput',
|
|
],
|
|
'taintIntoNestedArrayUnnestedSeparately' => [
|
|
'<?php
|
|
function foo() : void {
|
|
$a = [[(string) $_GET["bad"]]];
|
|
exec($a[0][0]);
|
|
}',
|
|
'error_message' => 'TaintedInput',
|
|
],
|
|
'taintIntoArrayAndThenOutAgain' => [
|
|
'<?php
|
|
class C {
|
|
public static function foo() : array {
|
|
$a = (string) $_GET["bad"];
|
|
return [$a];
|
|
}
|
|
|
|
public static function bar() {
|
|
exec(self::foo()[0]);
|
|
}
|
|
}',
|
|
'error_message' => 'TaintedInput',
|
|
],
|
|
'taintAppendedToArray' => [
|
|
'<?php
|
|
class C {
|
|
public static function foo() : array {
|
|
$a = [];
|
|
$a[] = (string) $_GET["bad"];
|
|
return $a;
|
|
}
|
|
|
|
public static function bar() {
|
|
exec(self::foo()[0]);
|
|
}
|
|
}',
|
|
'error_message' => 'TaintedInput',
|
|
],
|
|
'taintOnSubstrCall' => [
|
|
'<?php
|
|
class U {
|
|
/** @psalm-pure */
|
|
public static function shorten(string $s) : string {
|
|
return substr($s, 0, 15);
|
|
}
|
|
}
|
|
|
|
class V {}
|
|
|
|
class O1 {
|
|
public string $s;
|
|
|
|
public function __construct() {
|
|
$this->s = (string) $_GET["FOO"];
|
|
}
|
|
}
|
|
|
|
class V1 extends V {
|
|
public function foo(O1 $o) : void {
|
|
echo U::shorten($o->s);
|
|
}
|
|
}',
|
|
'error_message' => 'TaintedInput',
|
|
],
|
|
'taintOnStrReplaceCallSimple' => [
|
|
'<?php
|
|
class U {
|
|
/** @psalm-pure */
|
|
public static function shorten(string $s) : string {
|
|
return str_replace("foo", "bar", $s);
|
|
}
|
|
}
|
|
|
|
class V {}
|
|
|
|
class O1 {
|
|
public string $s;
|
|
|
|
public function __construct() {
|
|
$this->s = (string) $_GET["FOO"];
|
|
}
|
|
}
|
|
|
|
class V1 extends V {
|
|
public function foo(O1 $o) : void {
|
|
echo U::shorten($o->s);
|
|
}
|
|
}',
|
|
'error_message' => 'TaintedInput',
|
|
],
|
|
'taintOnPregReplaceCall' => [
|
|
'<?php
|
|
class U {
|
|
/** @psalm-pure */
|
|
public static function shorten(string $s) : string {
|
|
return preg_replace("/foo/", "bar", $s);
|
|
}
|
|
}
|
|
|
|
class V {}
|
|
|
|
class O1 {
|
|
public string $s;
|
|
|
|
public function __construct() {
|
|
$this->s = (string) $_GET["FOO"];
|
|
}
|
|
}
|
|
|
|
class V1 extends V {
|
|
public function foo(O1 $o) : void {
|
|
echo U::shorten($o->s);
|
|
}
|
|
}',
|
|
'error_message' => 'TaintedInput',
|
|
],
|
|
'IndirectGetAssignment' => [
|
|
'<?php
|
|
class InputFilter {
|
|
public string $name;
|
|
|
|
public function __construct(string $name) {
|
|
$this->name = $name;
|
|
}
|
|
|
|
/**
|
|
* @psalm-specialize-call
|
|
*/
|
|
public function getArg(string $method, string $type)
|
|
{
|
|
$arg = null;
|
|
|
|
switch ($method) {
|
|
case "post":
|
|
if (isset($_POST[$this->name])) {
|
|
$arg = $_POST[$this->name];
|
|
}
|
|
break;
|
|
|
|
case "get":
|
|
if (isset($_GET[$this->name])) {
|
|
$arg = $_GET[$this->name];
|
|
}
|
|
break;
|
|
}
|
|
|
|
return $this->filterInput($type, $arg);
|
|
}
|
|
|
|
protected function filterInput(string $type, $arg)
|
|
{
|
|
// input is null
|
|
if ($arg === null) {
|
|
return null;
|
|
}
|
|
|
|
// set to null if sanitize clears arg
|
|
if ($arg === "") {
|
|
$arg = null;
|
|
}
|
|
|
|
// type casting
|
|
if ($arg !== null) {
|
|
$arg = $this->typeCastInput($type, $arg);
|
|
}
|
|
|
|
return $arg;
|
|
}
|
|
|
|
protected function typeCastInput(string $type, $arg) {
|
|
if ($type === "string") {
|
|
return (string) $arg;
|
|
}
|
|
|
|
return null;
|
|
}
|
|
}
|
|
|
|
echo (new InputFilter("hello"))->getArg("get", "string");',
|
|
'error_message' => 'TaintedInput',
|
|
],
|
|
'taintPropertyPassingObject' => [
|
|
'<?php
|
|
/** @psalm-immutable */
|
|
class User {
|
|
public string $id;
|
|
|
|
public function __construct(string $userId) {
|
|
$this->id = $userId;
|
|
}
|
|
}
|
|
|
|
class UserUpdater {
|
|
public static function doDelete(PDO $pdo, User $user) : void {
|
|
self::deleteUser($pdo, $user->id);
|
|
}
|
|
|
|
public static function deleteUser(PDO $pdo, string $userId) : void {
|
|
$pdo->exec("delete from users where user_id = " . $userId);
|
|
}
|
|
}
|
|
|
|
$userObj = new User((string) $_GET["user_id"]);
|
|
UserUpdater::doDelete(new PDO(), $userObj);',
|
|
'error_message' => 'TaintedInput',
|
|
],
|
|
'taintPropertyPassingObjectSettingValueLater' => [
|
|
'<?php
|
|
/** @psalm-taint-specialize */
|
|
class User {
|
|
public string $id;
|
|
|
|
public function __construct(string $userId) {
|
|
$this->id = $userId;
|
|
}
|
|
|
|
public function setId(string $userId) : void {
|
|
$this->id = $userId;
|
|
}
|
|
}
|
|
|
|
class UserUpdater {
|
|
public static function doDelete(PDO $pdo, User $user) : void {
|
|
self::deleteUser($pdo, $user->id);
|
|
}
|
|
|
|
public static function deleteUser(PDO $pdo, string $userId) : void {
|
|
$pdo->exec("delete from users where user_id = " . $userId);
|
|
}
|
|
}
|
|
|
|
$userObj = new User("5");
|
|
$userObj->setId((string) $_GET["user_id"]);
|
|
UserUpdater::doDelete(new PDO(), $userObj);',
|
|
'error_message' => 'TaintedInput',
|
|
],
|
|
'ImplodeExplode' => [
|
|
'<?php
|
|
$a = $_GET["name"];
|
|
$b = explode(" ", $a);
|
|
$c = implode(" ", $b);
|
|
echo $c;',
|
|
'error_message' => 'TaintedInput',
|
|
],
|
|
'ImplodeIndirect' => [
|
|
'<?php
|
|
/** @var array $unsafe */
|
|
$unsafe = $_GET[\'unsafe\'];
|
|
echo implode(" ", $unsafe);',
|
|
'error_message' => 'TaintedInput',
|
|
],
|
|
'taintThroughPregReplaceCallback' => [
|
|
'<?php
|
|
$a = $_GET["bad"];
|
|
|
|
$b = preg_replace_callback(
|
|
\'/foo/\',
|
|
function (array $matches) : string {
|
|
return $matches[1];
|
|
},
|
|
$a
|
|
);
|
|
|
|
echo $b;',
|
|
'error_message' => 'TaintedInput',
|
|
],
|
|
'taintedFunctionWithNoTypes' => [
|
|
'<?php
|
|
function rawinput() {
|
|
return $_GET[\'rawinput\'];
|
|
}
|
|
|
|
echo rawinput();',
|
|
'error_message' => 'TaintedInput',
|
|
],
|
|
'taintedStaticCallWithNoTypes' => [
|
|
'<?php
|
|
class A {
|
|
public static function rawinput() {
|
|
return $_GET[\'rawinput\'];
|
|
}
|
|
}
|
|
|
|
echo A::rawinput();',
|
|
'error_message' => 'TaintedInput',
|
|
],
|
|
'taintedInstanceCallWithNoTypes' => [
|
|
'<?php
|
|
class A {
|
|
public function rawinput() {
|
|
return $_GET[\'rawinput\'];
|
|
}
|
|
}
|
|
|
|
echo (new A())->rawinput();',
|
|
'error_message' => 'TaintedInput',
|
|
],
|
|
'taintStringObtainedUsingStrval' => [
|
|
'<?php
|
|
$unsafe = strval($_GET[\'unsafe\']);
|
|
echo $unsafe',
|
|
'error_message' => 'TaintedInput',
|
|
],
|
|
'taintStringObtainedUsingSprintf' => [
|
|
'<?php
|
|
$unsafe = sprintf("%s", strval($_GET[\'unsafe\']));
|
|
echo $unsafe;',
|
|
'error_message' => 'TaintedInput',
|
|
],
|
|
'encapsulatedString' => [
|
|
'<?php
|
|
$unsafe = $_GET[\'unsafe\'];
|
|
echo "$unsafe";',
|
|
'error_message' => 'TaintedInput',
|
|
],
|
|
'encapsulatedToStringMagic' => [
|
|
'<?php
|
|
class MyClass {
|
|
public function __toString() {
|
|
return $_GET["blah"];
|
|
}
|
|
}
|
|
$unsafe = new MyClass();
|
|
echo "unsafe: $unsafe";',
|
|
'error_message' => 'TaintedInput',
|
|
],
|
|
'castToStringMagic' => [
|
|
'<?php
|
|
class MyClass {
|
|
public function __toString() {
|
|
return $_GET["blah"];
|
|
}
|
|
}
|
|
$unsafe = new MyClass();
|
|
echo $unsafe;',
|
|
'error_message' => 'TaintedInput',
|
|
],
|
|
'castToStringViaArgument' => [
|
|
'<?php
|
|
class MyClass {
|
|
public function __toString() {
|
|
return $_GET["blah"];
|
|
}
|
|
}
|
|
|
|
function doesEcho(string $s) {
|
|
echo $s;
|
|
}
|
|
|
|
$unsafe = new MyClass();
|
|
|
|
doesEcho($unsafe);',
|
|
'error_message' => 'TaintedInput',
|
|
],
|
|
'toStringTaintInSubclass' => [
|
|
'<?php // --taint-analysis
|
|
class TaintedBaseClass {
|
|
/** @psalm-taint-source input */
|
|
public function __toString() {
|
|
return "x";
|
|
}
|
|
}
|
|
class TaintedSubclass extends TaintedBaseClass {}
|
|
$x = new TaintedSubclass();
|
|
echo "Caught: $x\n";',
|
|
'error_message' => 'TaintedInput',
|
|
],
|
|
'implicitToStringMagic' => [
|
|
'<?php
|
|
class MyClass {
|
|
public function __toString() {
|
|
return $_GET["blah"];
|
|
}
|
|
}
|
|
$unsafe = new MyClass();
|
|
echo $unsafe;',
|
|
'error_message' => 'TaintedInput',
|
|
],
|
|
'namespacedFunction' => [
|
|
'<?php
|
|
namespace ns;
|
|
|
|
function identity(string $s) : string {
|
|
return $s;
|
|
}
|
|
|
|
echo identity($_GET[\'userinput\']);',
|
|
'error_message' => 'TaintedInput',
|
|
],
|
|
'print' => [
|
|
'<?php
|
|
print($_GET["name"]);',
|
|
'error_message' => 'TaintedInput - src' . DIRECTORY_SEPARATOR . 'somefile.php:2:27 - Detected tainted html in path: $_GET -> $_GET[\'name\'] (src/somefile.php:2:27) -> call to print (src/somefile.php:2:27) -> print#1',
|
|
],
|
|
'unpackArgs' => [
|
|
'<?php
|
|
function test(...$args) {
|
|
echo $args[0];
|
|
}
|
|
test(...$_GET["other"]);',
|
|
'error_message' => 'TaintedInput',
|
|
],
|
|
'foreachArg' => [
|
|
'<?php
|
|
$a = $_GET["bad"];
|
|
|
|
foreach ($a as $arg) {
|
|
echo $arg;
|
|
}',
|
|
'error_message' => 'TaintedInput',
|
|
],
|
|
'magicPropertyType' => [
|
|
'<?php
|
|
class Magic {
|
|
private $params = [];
|
|
|
|
public function __get(string $a) {
|
|
return $this->params[$a];
|
|
}
|
|
|
|
public function __set(string $a, $value) {
|
|
$this->params[$a] = $value;
|
|
}
|
|
}
|
|
|
|
$m = new Magic();
|
|
$m->taint = $_GET["input"];
|
|
echo $m->taint;',
|
|
'error_message' => 'TaintedInput',
|
|
],
|
|
'taintNestedArrayWithOffsetAccessedInForeach' => [
|
|
'<?php
|
|
$a = [];
|
|
$a[0] = ["a" => $_GET["name"], "b" => "foo"];
|
|
|
|
foreach ($a as $m) {
|
|
echo $m["a"];
|
|
}',
|
|
'error_message' => 'TaintedInput',
|
|
],
|
|
'taintNestedArrayWithOffsetAccessedExplicitly' => [
|
|
'<?php
|
|
$a = [];
|
|
$a[] = ["a" => $_GET["name"], "b" => "foo"];
|
|
|
|
echo $a[0]["a"];',
|
|
'error_message' => 'TaintedInput',
|
|
],
|
|
'taintThroughArrayMapExplicitClosure' => [
|
|
'<?php
|
|
$get = array_map(function($str) { return trim($str);}, $_GET);
|
|
echo $get["test"];',
|
|
'error_message' => 'TaintedInput',
|
|
],
|
|
'taintThroughArrayMapExplicitTypedClosure' => [
|
|
'<?php
|
|
$get = array_map(function(string $str) : string { return trim($str);}, $_GET);
|
|
echo $get["test"];',
|
|
'error_message' => 'TaintedInput',
|
|
],
|
|
'taintThroughArrayMapExplicitArrowFunction' => [
|
|
'<?php
|
|
$get = array_map(fn($str) => trim($str), $_GET);
|
|
echo $get["test"];',
|
|
'error_message' => 'TaintedInput',
|
|
],
|
|
'taintThroughArrayMapImplicitFunctionCall' => [
|
|
'<?php
|
|
$a = ["test" => $_GET["name"]];
|
|
$get = array_map("trim", $a);
|
|
echo $get["test"];',
|
|
'error_message' => 'TaintedInput',
|
|
],
|
|
'taintFilterVar' => [
|
|
'<?php
|
|
$get = filter_var($_GET, FILTER_CALLBACK, ["options" => "trim"]);
|
|
|
|
echo $get["test"];',
|
|
'error_message' => 'TaintedInput',
|
|
],
|
|
'taintAfterReconciledType' => [
|
|
'<?php
|
|
$input = $_GET[\'input\'];
|
|
if (is_string($input)) {
|
|
echo "$input";
|
|
}',
|
|
'error_message' => 'TaintedInput',
|
|
],
|
|
'taintExit' => [
|
|
'<?php
|
|
if (rand(0, 1)) {
|
|
exit($_GET[\'a\']);
|
|
} else {
|
|
die($_GET[\'b\']);
|
|
}',
|
|
'error_message' => 'TaintedInput',
|
|
],
|
|
'taintSpecializedMethod' => [
|
|
'<?php
|
|
/** @psalm-taint-specialize */
|
|
class Unsafe {
|
|
public function isUnsafe() {
|
|
return $_GET["unsafe"];
|
|
}
|
|
}
|
|
$a = new Unsafe();
|
|
echo $a->isUnsafe();',
|
|
'error_message' => 'TaintedInput',
|
|
],
|
|
'taintSpecializedInstanceProperty' => [
|
|
'<?php
|
|
/** @psalm-taint-specialize */
|
|
class StringHolder {
|
|
public $x;
|
|
|
|
public function __construct(string $x) {
|
|
$this->x = $x;
|
|
}
|
|
}
|
|
|
|
$b = new StringHolder($_GET["x"]);
|
|
|
|
echo $b->x;',
|
|
'error_message' => 'TaintedInput',
|
|
],
|
|
'taintUnserialize' => [
|
|
'<?php
|
|
$cb = unserialize($_POST[\'x\']);',
|
|
'error_message' => 'TaintedInput',
|
|
],
|
|
'taintCreateFunction' => [
|
|
'<?php
|
|
$cb = create_function(\'$a\', $_GET[\'x\']);',
|
|
'error_message' => 'TaintedInput',
|
|
],
|
|
'taintException' => [
|
|
'<?php
|
|
$e = new Exception();
|
|
echo $e;',
|
|
'error_message' => 'TaintedInput',
|
|
],
|
|
'taintError' => [
|
|
'<?php
|
|
function foo() {}
|
|
try {
|
|
foo();
|
|
} catch (TypeError $e) {
|
|
echo "Caught: {$e->getTraceAsString()}\n";
|
|
}',
|
|
'error_message' => 'TaintedInput',
|
|
],
|
|
'taintThrowable' => [
|
|
'<?php
|
|
function foo() {}
|
|
try {
|
|
foo();
|
|
} catch (Throwable $e) {
|
|
echo "Caught: $e"; // TODO: ("Caught" . $e) does not work.
|
|
}',
|
|
'error_message' => 'TaintedInput',
|
|
],
|
|
/*
|
|
// TODO: Stubs do not support this type of inference even with $this->message = $message.
|
|
// Most uses of getMessage() would be with caught exceptions, so this is not representative of real code.
|
|
'taintException' => [
|
|
'<?php
|
|
$x = new Exception($_GET["x"]);
|
|
echo $x->getMessage();',
|
|
'error_message' => 'TaintedInput',
|
|
],
|
|
*/
|
|
];
|
|
}
|
|
}
|