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2084 lines
80 KiB
PHP
2084 lines
80 KiB
PHP
<?php
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namespace Psalm\Internal\Analyzer\Statements\Expression\Call;
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use PhpParser;
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use PhpParser\BuilderFactory;
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use Psalm\Internal\Analyzer\Statements\ExpressionAnalyzer;
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use Psalm\Internal\Analyzer\Statements\Expression\CallAnalyzer;
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use Psalm\Internal\Analyzer\Statements\Expression\AssertionFinder;
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use Psalm\Internal\Analyzer\Statements\Expression\ExpressionIdentifier;
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use Psalm\Internal\Analyzer\Statements\Expression\Fetch\ConstFetchAnalyzer;
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use Psalm\Internal\Analyzer\StatementsAnalyzer;
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use Psalm\Internal\Type\Comparator\CallableTypeComparator;
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use Psalm\Internal\Type\Comparator\UnionTypeComparator;
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use Psalm\Internal\Codebase\InternalCallMapHandler;
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use Psalm\CodeLocation;
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use Psalm\Context;
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use Psalm\Internal\Algebra\FormulaGenerator;
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use Psalm\Internal\FileManipulation\FileManipulationBuffer;
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use Psalm\Internal\DataFlow\TaintSource;
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use Psalm\Internal\DataFlow\DataFlowNode;
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use Psalm\Internal\Codebase\TaintFlowGraph;
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use Psalm\Issue\DeprecatedFunction;
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use Psalm\Issue\ForbiddenCode;
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use Psalm\Issue\MixedFunctionCall;
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use Psalm\Issue\InvalidFunctionCall;
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use Psalm\Issue\ImpureFunctionCall;
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use Psalm\Issue\NullFunctionCall;
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use Psalm\Issue\PossiblyInvalidFunctionCall;
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use Psalm\Issue\PossiblyNullFunctionCall;
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use Psalm\Issue\UnusedFunctionCall;
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use Psalm\IssueBuffer;
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use Psalm\Storage\Assertion;
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use Psalm\Storage\FunctionLikeStorage;
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use Psalm\Type;
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use Psalm\Type\Atomic\TCallable;
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use Psalm\Type\Atomic\TCallableObject;
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use Psalm\Type\Atomic\TCallableString;
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use Psalm\Type\Atomic\TTemplateParam;
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use Psalm\Type\Atomic\TMixed;
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use Psalm\Type\Atomic\TNamedObject;
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use Psalm\Type\Atomic\TNull;
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use Psalm\Type\Atomic\TString;
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use Psalm\Internal\Algebra;
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use Psalm\Type\Reconciler;
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use function count;
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use function in_array;
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use function reset;
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use function implode;
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use function strtolower;
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use function array_merge;
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use function is_string;
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use function array_map;
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use function extension_loaded;
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use function strpos;
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use Psalm\Internal\Type\TemplateResult;
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use Psalm\Storage\FunctionLikeParameter;
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use function explode;
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/**
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* @internal
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*/
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class FunctionCallAnalyzer extends CallAnalyzer
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{
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public static function analyze(
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StatementsAnalyzer $statements_analyzer,
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PhpParser\Node\Expr\FuncCall $stmt,
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Context $context
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) : bool {
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$function_name = $stmt->name;
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$function_id = null;
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$function_params = null;
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$in_call_map = false;
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$is_stubbed = false;
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$function_storage = null;
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$codebase = $statements_analyzer->getCodebase();
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$code_location = new CodeLocation($statements_analyzer->getSource(), $stmt);
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$codebase_functions = $codebase->functions;
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$config = $codebase->config;
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$defined_constants = [];
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$global_variables = [];
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$function_exists = false;
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$real_stmt = $stmt;
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if ($function_name instanceof PhpParser\Node\Name
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&& isset($stmt->args[0])
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&& !$stmt->args[0]->unpack
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) {
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$original_function_id = implode('\\', $function_name->parts);
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if ($original_function_id === 'call_user_func') {
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$other_args = \array_slice($stmt->args, 1);
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$function_name = $stmt->args[0]->value;
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$stmt = new PhpParser\Node\Expr\FuncCall(
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$function_name,
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$other_args,
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$stmt->getAttributes()
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);
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}
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if ($original_function_id === 'call_user_func_array' && isset($stmt->args[1])) {
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$function_name = $stmt->args[0]->value;
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$stmt = new PhpParser\Node\Expr\FuncCall(
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$function_name,
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[new PhpParser\Node\Arg($stmt->args[1]->value, false, true)],
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$stmt->getAttributes()
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);
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}
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}
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$byref_uses = [];
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$allow_named_args = true;
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if ($function_name instanceof PhpParser\Node\Expr) {
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[$expr_function_exists, $expr_function_name, $expr_function_params, $byref_uses]
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= self::getAnalyzeNamedExpression(
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$statements_analyzer,
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$codebase,
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$stmt,
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$real_stmt,
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$function_name,
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$context
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);
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if ($expr_function_exists === false) {
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return true;
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}
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if ($expr_function_exists === true) {
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$function_exists = true;
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}
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if ($expr_function_name) {
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$function_name = $expr_function_name;
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}
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if ($expr_function_params) {
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$function_params = $expr_function_params;
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}
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} else {
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$original_function_id = implode('\\', $function_name->parts);
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if (!$function_name instanceof PhpParser\Node\Name\FullyQualified) {
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$function_id = $codebase_functions->getFullyQualifiedFunctionNameFromString(
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$original_function_id,
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$statements_analyzer
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);
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} else {
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$function_id = $original_function_id;
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}
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$namespaced_function_exists = $codebase_functions->functionExists(
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$statements_analyzer,
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strtolower($function_id)
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);
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if (!$namespaced_function_exists
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&& !$function_name instanceof PhpParser\Node\Name\FullyQualified
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) {
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$in_call_map = InternalCallMapHandler::inCallMap($original_function_id);
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$is_stubbed = $codebase_functions->hasStubbedFunction($original_function_id);
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if ($is_stubbed || $in_call_map) {
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$function_id = $original_function_id;
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}
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} else {
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$in_call_map = InternalCallMapHandler::inCallMap($function_id);
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$is_stubbed = $codebase_functions->hasStubbedFunction($function_id);
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}
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if ($is_stubbed || $in_call_map || $namespaced_function_exists) {
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$function_exists = true;
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}
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if ($function_exists
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&& $codebase->store_node_types
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&& !$context->collect_initializations
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&& !$context->collect_mutations
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) {
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ArgumentMapPopulator::recordArgumentPositions(
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$statements_analyzer,
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$stmt,
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$codebase,
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$function_id
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);
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}
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$is_predefined = true;
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$is_maybe_root_function = !$function_name instanceof PhpParser\Node\Name\FullyQualified
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&& count($function_name->parts) === 1;
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if (!$in_call_map) {
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$predefined_functions = $config->getPredefinedFunctions();
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$is_predefined = isset($predefined_functions[strtolower($original_function_id)])
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|| isset($predefined_functions[strtolower($function_id)]);
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if ($context->check_functions) {
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if (self::checkFunctionExists(
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$statements_analyzer,
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$function_id,
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$code_location,
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$is_maybe_root_function
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) === false
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) {
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if (ArgumentsAnalyzer::analyze(
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$statements_analyzer,
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$stmt->args,
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null,
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null,
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true,
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$context
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) === false) {
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// fall through
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}
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return true;
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}
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}
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} else {
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$function_exists = true;
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}
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if ($function_exists) {
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$function_params = null;
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if ($codebase->functions->params_provider->has($function_id)) {
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$function_params = $codebase->functions->params_provider->getFunctionParams(
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$statements_analyzer,
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$function_id,
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$stmt->args,
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null,
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$code_location
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);
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}
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if ($function_params === null) {
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if (!$in_call_map || $is_stubbed) {
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try {
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$function_storage = $codebase_functions->getStorage(
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$statements_analyzer,
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strtolower($function_id)
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);
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$function_params = $function_storage->params;
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if (!$function_storage->allow_named_arg_calls) {
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$allow_named_args = false;
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}
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if (!$is_predefined) {
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$defined_constants = $function_storage->defined_constants;
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$global_variables = $function_storage->global_variables;
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}
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} catch (\UnexpectedValueException $e) {
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$function_params = [
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new FunctionLikeParameter('args', false, null, null, null, false, false, true)
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];
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}
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} else {
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$function_callable = InternalCallMapHandler::getCallableFromCallMapById(
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$codebase,
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$function_id,
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$stmt->args,
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$statements_analyzer->node_data
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);
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$function_params = $function_callable->params;
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}
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}
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if ($codebase->store_node_types
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&& !$context->collect_initializations
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&& !$context->collect_mutations
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) {
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$codebase->analyzer->addNodeReference(
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$statements_analyzer->getFilePath(),
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$function_name,
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$function_id . '()'
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);
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}
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}
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}
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$set_inside_conditional = false;
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if ($function_name instanceof PhpParser\Node\Name
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&& $function_name->parts === ['assert']
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&& !$context->inside_conditional
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) {
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$context->inside_conditional = true;
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$set_inside_conditional = true;
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}
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if (ArgumentsAnalyzer::analyze(
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$statements_analyzer,
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$stmt->args,
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$function_params,
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$function_id,
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$allow_named_args,
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$context
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) === false) {
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// fall through
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}
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if ($set_inside_conditional) {
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$context->inside_conditional = false;
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}
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$template_result = null;
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$function_callable = null;
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if ($function_exists) {
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if ($function_name instanceof PhpParser\Node\Name && $function_id) {
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if (!$is_stubbed && $in_call_map) {
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$function_callable = \Psalm\Internal\Codebase\InternalCallMapHandler::getCallableFromCallMapById(
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$codebase,
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$function_id,
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$stmt->args,
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$statements_analyzer->node_data
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);
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$function_params = $function_callable->params;
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}
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}
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$template_result = new TemplateResult([], []);
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// do this here to allow closure param checks
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if ($function_params !== null
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&& ArgumentsAnalyzer::checkArgumentsMatch(
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$statements_analyzer,
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$stmt->args,
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$function_id,
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$function_params,
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$function_storage,
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null,
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$template_result,
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$code_location,
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$context
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) === false
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) {
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// fall through
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}
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CallAnalyzer::checkTemplateResult(
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$statements_analyzer,
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$template_result,
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$code_location,
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$function_id
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);
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if ($function_name instanceof PhpParser\Node\Name && $function_id) {
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$stmt_type = self::getFunctionCallReturnType(
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$statements_analyzer,
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$codebase,
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$stmt,
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$function_name,
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$function_id,
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$in_call_map,
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$is_stubbed,
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$function_storage,
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$function_callable,
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$template_result,
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$context
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);
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$statements_analyzer->node_data->setType($real_stmt, $stmt_type);
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if ($config->after_every_function_checks) {
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foreach ($config->after_every_function_checks as $plugin_fq_class_name) {
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$plugin_fq_class_name::afterEveryFunctionCallAnalysis(
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$stmt,
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$function_id,
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$context,
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$statements_analyzer->getSource(),
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$codebase
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);
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}
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}
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}
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foreach ($defined_constants as $const_name => $const_type) {
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$context->constants[$const_name] = clone $const_type;
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$context->vars_in_scope[$const_name] = clone $const_type;
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}
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foreach ($global_variables as $var_id => $_) {
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$context->vars_in_scope[$var_id] = Type::getMixed();
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$context->vars_possibly_in_scope[$var_id] = true;
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}
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if ($function_name instanceof PhpParser\Node\Name
|
||
&& $function_name->parts === ['assert']
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&& isset($stmt->args[0])
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) {
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self::processAssertFunctionEffects(
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$statements_analyzer,
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$codebase,
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$stmt,
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$stmt->args[0],
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$context
|
||
);
|
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}
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}
|
||
|
||
if ($codebase->store_node_types
|
||
&& !$context->collect_initializations
|
||
&& !$context->collect_mutations
|
||
&& ($stmt_type = $statements_analyzer->node_data->getType($real_stmt))
|
||
) {
|
||
$codebase->analyzer->addNodeType(
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$statements_analyzer->getFilePath(),
|
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$stmt,
|
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$stmt_type->getId()
|
||
);
|
||
}
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||
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self::checkFunctionCallPurity(
|
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$statements_analyzer,
|
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$codebase,
|
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$stmt,
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$function_name,
|
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$function_id,
|
||
$in_call_map,
|
||
$function_storage,
|
||
$context
|
||
);
|
||
|
||
if ($function_storage) {
|
||
$generic_params = $template_result ? $template_result->upper_bounds : [];
|
||
|
||
if ($function_storage->assertions && $function_name instanceof PhpParser\Node\Name) {
|
||
self::applyAssertionsToContext(
|
||
$function_name,
|
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null,
|
||
$function_storage->assertions,
|
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$stmt->args,
|
||
$generic_params,
|
||
$context,
|
||
$statements_analyzer
|
||
);
|
||
}
|
||
|
||
if ($function_storage->if_true_assertions) {
|
||
$statements_analyzer->node_data->setIfTrueAssertions(
|
||
$stmt,
|
||
array_map(
|
||
function (Assertion $assertion) use ($generic_params) : Assertion {
|
||
return $assertion->getUntemplatedCopy($generic_params ?: [], null);
|
||
},
|
||
$function_storage->if_true_assertions
|
||
)
|
||
);
|
||
}
|
||
|
||
if ($function_storage->if_false_assertions) {
|
||
$statements_analyzer->node_data->setIfFalseAssertions(
|
||
$stmt,
|
||
array_map(
|
||
function (Assertion $assertion) use ($generic_params) : Assertion {
|
||
return $assertion->getUntemplatedCopy($generic_params ?: [], null);
|
||
},
|
||
$function_storage->if_false_assertions
|
||
)
|
||
);
|
||
}
|
||
|
||
if ($function_storage->deprecated && $function_id) {
|
||
if (IssueBuffer::accepts(
|
||
new DeprecatedFunction(
|
||
'The function ' . $function_id . ' has been marked as deprecated',
|
||
$code_location,
|
||
$function_id
|
||
),
|
||
$statements_analyzer->getSuppressedIssues()
|
||
)) {
|
||
// continue
|
||
}
|
||
}
|
||
}
|
||
|
||
if ($byref_uses) {
|
||
foreach ($byref_uses as $byref_use_var => $_) {
|
||
$context->vars_in_scope['$' . $byref_use_var] = Type::getMixed();
|
||
$context->vars_possibly_in_scope['$' . $byref_use_var] = true;
|
||
}
|
||
}
|
||
|
||
if ($function_name instanceof PhpParser\Node\Name) {
|
||
self::handleNamedFunction(
|
||
$statements_analyzer,
|
||
$codebase,
|
||
$stmt,
|
||
$real_stmt,
|
||
$function_name,
|
||
$function_id,
|
||
$context
|
||
);
|
||
}
|
||
|
||
if (!$statements_analyzer->node_data->getType($real_stmt)) {
|
||
$statements_analyzer->node_data->setType($real_stmt, Type::getMixed());
|
||
}
|
||
|
||
return true;
|
||
}
|
||
|
||
/**
|
||
* @return array{
|
||
* ?bool,
|
||
* ?PhpParser\Node\Expr|PhpParser\Node\Name,
|
||
* array<int, FunctionLikeParameter>|null,
|
||
* ?array<string, bool>
|
||
* }
|
||
*/
|
||
private static function getAnalyzeNamedExpression(
|
||
StatementsAnalyzer $statements_analyzer,
|
||
\Psalm\Codebase $codebase,
|
||
PhpParser\Node\Expr\FuncCall $stmt,
|
||
PhpParser\Node\Expr\FuncCall $real_stmt,
|
||
PhpParser\Node\Expr $function_name,
|
||
Context $context
|
||
): array {
|
||
$function_params = null;
|
||
|
||
$explicit_function_name = null;
|
||
$function_exists = null;
|
||
$was_in_call = $context->inside_call;
|
||
$context->inside_call = true;
|
||
|
||
if (ExpressionAnalyzer::analyze($statements_analyzer, $function_name, $context) === false) {
|
||
$context->inside_call = $was_in_call;
|
||
|
||
return [false, null, null, null];
|
||
}
|
||
|
||
$context->inside_call = $was_in_call;
|
||
|
||
$byref_uses = [];
|
||
|
||
if ($stmt_name_type = $statements_analyzer->node_data->getType($function_name)) {
|
||
if ($stmt_name_type->isNull()) {
|
||
if (IssueBuffer::accepts(
|
||
new NullFunctionCall(
|
||
'Cannot call function on null value',
|
||
new CodeLocation($statements_analyzer->getSource(), $stmt)
|
||
),
|
||
$statements_analyzer->getSuppressedIssues()
|
||
)) {
|
||
// fall through
|
||
}
|
||
|
||
return [false, null, null, null];
|
||
}
|
||
|
||
if ($stmt_name_type->isNullable()) {
|
||
if (IssueBuffer::accepts(
|
||
new PossiblyNullFunctionCall(
|
||
'Cannot call function on possibly null value',
|
||
new CodeLocation($statements_analyzer->getSource(), $stmt)
|
||
),
|
||
$statements_analyzer->getSuppressedIssues()
|
||
)) {
|
||
// fall through
|
||
}
|
||
}
|
||
|
||
$invalid_function_call_types = [];
|
||
$has_valid_function_call_type = false;
|
||
|
||
foreach ($stmt_name_type->getAtomicTypes() as $var_type_part) {
|
||
if ($var_type_part instanceof Type\Atomic\TClosure || $var_type_part instanceof TCallable) {
|
||
if (!$var_type_part->is_pure && $context->pure) {
|
||
if (IssueBuffer::accepts(
|
||
new ImpureFunctionCall(
|
||
'Cannot call an impure function from a mutation-free context',
|
||
new CodeLocation($statements_analyzer->getSource(), $stmt)
|
||
),
|
||
$statements_analyzer->getSuppressedIssues()
|
||
)) {
|
||
// fall through
|
||
}
|
||
}
|
||
|
||
$function_params = $var_type_part->params;
|
||
|
||
if (($stmt_type = $statements_analyzer->node_data->getType($real_stmt))
|
||
&& $var_type_part->return_type
|
||
) {
|
||
$statements_analyzer->node_data->setType(
|
||
$real_stmt,
|
||
Type::combineUnionTypes(
|
||
$stmt_type,
|
||
$var_type_part->return_type
|
||
)
|
||
);
|
||
} else {
|
||
$statements_analyzer->node_data->setType(
|
||
$real_stmt,
|
||
$var_type_part->return_type ?: Type::getMixed()
|
||
);
|
||
}
|
||
|
||
if ($var_type_part instanceof Type\Atomic\TClosure) {
|
||
$byref_uses += $var_type_part->byref_uses;
|
||
}
|
||
|
||
$function_exists = true;
|
||
$has_valid_function_call_type = true;
|
||
} elseif ($var_type_part instanceof TTemplateParam && $var_type_part->as->hasCallableType()) {
|
||
$has_valid_function_call_type = true;
|
||
} elseif ($var_type_part instanceof TMixed || $var_type_part instanceof TTemplateParam) {
|
||
$has_valid_function_call_type = true;
|
||
|
||
if (IssueBuffer::accepts(
|
||
new MixedFunctionCall(
|
||
'Cannot call function on ' . $var_type_part->getId(),
|
||
new CodeLocation($statements_analyzer->getSource(), $stmt)
|
||
),
|
||
$statements_analyzer->getSuppressedIssues()
|
||
)) {
|
||
// fall through
|
||
}
|
||
} elseif ($var_type_part instanceof TCallableObject
|
||
|| $var_type_part instanceof TCallableString
|
||
) {
|
||
// this is fine
|
||
$has_valid_function_call_type = true;
|
||
} elseif (($var_type_part instanceof TNamedObject && $var_type_part->value === 'Closure')) {
|
||
// this is fine
|
||
$has_valid_function_call_type = true;
|
||
} elseif ($var_type_part instanceof TString
|
||
|| $var_type_part instanceof Type\Atomic\TArray
|
||
|| $var_type_part instanceof Type\Atomic\TList
|
||
|| ($var_type_part instanceof Type\Atomic\TKeyedArray
|
||
&& count($var_type_part->properties) === 2)
|
||
) {
|
||
$potential_method_id = null;
|
||
|
||
if ($var_type_part instanceof Type\Atomic\TKeyedArray) {
|
||
$potential_method_id = CallableTypeComparator::getCallableMethodIdFromTKeyedArray(
|
||
$var_type_part,
|
||
$codebase,
|
||
$context->calling_method_id,
|
||
$statements_analyzer->getFilePath()
|
||
);
|
||
|
||
if ($potential_method_id === 'not-callable') {
|
||
$potential_method_id = null;
|
||
}
|
||
} elseif ($var_type_part instanceof Type\Atomic\TLiteralString) {
|
||
if (!$var_type_part->value) {
|
||
$invalid_function_call_types[] = '\'\'';
|
||
continue;
|
||
}
|
||
|
||
if (strpos($var_type_part->value, '::')) {
|
||
$parts = explode('::', strtolower($var_type_part->value));
|
||
$fq_class_name = $parts[0];
|
||
$fq_class_name = \preg_replace('/^\\\\/', '', $fq_class_name);
|
||
$potential_method_id = new \Psalm\Internal\MethodIdentifier($fq_class_name, $parts[1]);
|
||
} else {
|
||
$explicit_function_name = new PhpParser\Node\Name\FullyQualified(
|
||
$var_type_part->value,
|
||
$function_name->getAttributes()
|
||
);
|
||
}
|
||
}
|
||
|
||
if ($potential_method_id) {
|
||
$codebase->methods->methodExists(
|
||
$potential_method_id,
|
||
$context->calling_method_id,
|
||
null,
|
||
$statements_analyzer,
|
||
$statements_analyzer->getFilePath()
|
||
);
|
||
}
|
||
|
||
// this is also kind of fine
|
||
$has_valid_function_call_type = true;
|
||
} elseif ($var_type_part instanceof TNull) {
|
||
// handled above
|
||
} elseif (!$var_type_part instanceof TNamedObject
|
||
|| !$codebase->classlikes->classOrInterfaceExists($var_type_part->value)
|
||
|| !$codebase->methods->methodExists(
|
||
new \Psalm\Internal\MethodIdentifier(
|
||
$var_type_part->value,
|
||
'__invoke'
|
||
)
|
||
)
|
||
) {
|
||
$invalid_function_call_types[] = (string)$var_type_part;
|
||
} else {
|
||
self::analyzeInvokeCall(
|
||
$statements_analyzer,
|
||
$stmt,
|
||
$real_stmt,
|
||
$function_name,
|
||
$context,
|
||
$var_type_part
|
||
);
|
||
}
|
||
}
|
||
|
||
if ($invalid_function_call_types) {
|
||
$var_type_part = reset($invalid_function_call_types);
|
||
|
||
if ($has_valid_function_call_type) {
|
||
if (IssueBuffer::accepts(
|
||
new PossiblyInvalidFunctionCall(
|
||
'Cannot treat type ' . $var_type_part . ' as callable',
|
||
new CodeLocation($statements_analyzer->getSource(), $stmt)
|
||
),
|
||
$statements_analyzer->getSuppressedIssues()
|
||
)) {
|
||
// fall through
|
||
}
|
||
} else {
|
||
if (IssueBuffer::accepts(
|
||
new InvalidFunctionCall(
|
||
'Cannot treat type ' . $var_type_part . ' as callable',
|
||
new CodeLocation($statements_analyzer->getSource(), $stmt)
|
||
),
|
||
$statements_analyzer->getSuppressedIssues()
|
||
)) {
|
||
// fall through
|
||
}
|
||
}
|
||
|
||
return [false, null, null, null];
|
||
}
|
||
|
||
if ($statements_analyzer->data_flow_graph instanceof TaintFlowGraph
|
||
&& $stmt_name_type->parent_nodes
|
||
&& $stmt_name_type->hasString()
|
||
&& !\in_array('TaintedInput', $statements_analyzer->getSuppressedIssues())
|
||
) {
|
||
$arg_location = new CodeLocation($statements_analyzer->getSource(), $function_name);
|
||
|
||
$custom_call_sink = \Psalm\Internal\DataFlow\TaintSink::getForMethodArgument(
|
||
'variable-call',
|
||
'variable-call',
|
||
0,
|
||
$arg_location,
|
||
$arg_location
|
||
);
|
||
|
||
$custom_call_sink->taints = [\Psalm\Type\TaintKind::INPUT_CALLABLE];
|
||
|
||
$statements_analyzer->data_flow_graph->addSink($custom_call_sink);
|
||
|
||
foreach ($stmt_name_type->parent_nodes as $parent_node) {
|
||
$statements_analyzer->data_flow_graph->addPath($parent_node, $custom_call_sink, 'call');
|
||
}
|
||
}
|
||
}
|
||
|
||
if (!$statements_analyzer->node_data->getType($real_stmt)) {
|
||
$statements_analyzer->node_data->setType($real_stmt, Type::getMixed());
|
||
}
|
||
|
||
return [
|
||
$function_exists,
|
||
$explicit_function_name ?: $function_name,
|
||
$function_params,
|
||
$byref_uses
|
||
];
|
||
}
|
||
|
||
private static function analyzeInvokeCall(
|
||
StatementsAnalyzer $statements_analyzer,
|
||
PhpParser\Node\Expr\FuncCall $stmt,
|
||
PhpParser\Node\Expr\FuncCall $real_stmt,
|
||
PhpParser\Node\Expr $function_name,
|
||
Context $context,
|
||
Type\Atomic $atomic_type
|
||
) : void {
|
||
$old_data_provider = $statements_analyzer->node_data;
|
||
|
||
$statements_analyzer->node_data = clone $statements_analyzer->node_data;
|
||
|
||
$fake_method_call = new PhpParser\Node\Expr\MethodCall(
|
||
$function_name,
|
||
new PhpParser\Node\Identifier('__invoke', $function_name->getAttributes()),
|
||
$stmt->args
|
||
);
|
||
|
||
$suppressed_issues = $statements_analyzer->getSuppressedIssues();
|
||
|
||
if (!in_array('PossiblyNullReference', $suppressed_issues, true)) {
|
||
$statements_analyzer->addSuppressedIssues(['PossiblyNullReference']);
|
||
}
|
||
|
||
if (!in_array('InternalMethod', $suppressed_issues, true)) {
|
||
$statements_analyzer->addSuppressedIssues(['InternalMethod']);
|
||
}
|
||
|
||
if (!in_array('PossiblyInvalidMethodCall', $suppressed_issues, true)) {
|
||
$statements_analyzer->addSuppressedIssues(['PossiblyInvalidMethodCall']);
|
||
}
|
||
|
||
$statements_analyzer->node_data->setType($function_name, new Type\Union([$atomic_type]));
|
||
|
||
\Psalm\Internal\Analyzer\Statements\Expression\Call\MethodCallAnalyzer::analyze(
|
||
$statements_analyzer,
|
||
$fake_method_call,
|
||
$context,
|
||
false
|
||
);
|
||
|
||
if (!in_array('PossiblyNullReference', $suppressed_issues, true)) {
|
||
$statements_analyzer->removeSuppressedIssues(['PossiblyNullReference']);
|
||
}
|
||
|
||
if (!in_array('InternalMethod', $suppressed_issues, true)) {
|
||
$statements_analyzer->removeSuppressedIssues(['InternalMethod']);
|
||
}
|
||
|
||
if (!in_array('PossiblyInvalidMethodCall', $suppressed_issues, true)) {
|
||
$statements_analyzer->removeSuppressedIssues(['PossiblyInvalidMethodCall']);
|
||
}
|
||
|
||
$fake_method_call_type = $statements_analyzer->node_data->getType($fake_method_call);
|
||
|
||
$statements_analyzer->node_data = $old_data_provider;
|
||
|
||
if ($stmt_type = $statements_analyzer->node_data->getType($real_stmt)) {
|
||
$statements_analyzer->node_data->setType(
|
||
$real_stmt,
|
||
Type::combineUnionTypes(
|
||
$fake_method_call_type ?: Type::getMixed(),
|
||
$stmt_type
|
||
)
|
||
);
|
||
} else {
|
||
$statements_analyzer->node_data->setType(
|
||
$real_stmt,
|
||
$fake_method_call_type ?: Type::getMixed()
|
||
);
|
||
}
|
||
}
|
||
|
||
private static function processAssertFunctionEffects(
|
||
StatementsAnalyzer $statements_analyzer,
|
||
\Psalm\Codebase $codebase,
|
||
PhpParser\Node\Expr\FuncCall $stmt,
|
||
PhpParser\Node\Arg $first_arg,
|
||
Context $context
|
||
) : void {
|
||
$first_arg_value_id = \spl_object_id($first_arg->value);
|
||
|
||
$assert_clauses = FormulaGenerator::getFormula(
|
||
$first_arg_value_id,
|
||
$first_arg_value_id,
|
||
$first_arg->value,
|
||
$context->self,
|
||
$statements_analyzer,
|
||
$codebase
|
||
);
|
||
|
||
\Psalm\Internal\Analyzer\AlgebraAnalyzer::checkForParadox(
|
||
$context->clauses,
|
||
$assert_clauses,
|
||
$statements_analyzer,
|
||
$stmt,
|
||
[]
|
||
);
|
||
|
||
$simplified_clauses = Algebra::simplifyCNF(array_merge($context->clauses, $assert_clauses));
|
||
|
||
$assert_type_assertions = Algebra::getTruthsFromFormula($simplified_clauses);
|
||
|
||
if ($assert_type_assertions) {
|
||
$changed_var_ids = [];
|
||
|
||
// while in an and, we allow scope to boil over to support
|
||
// statements of the form if ($x && $x->foo())
|
||
$op_vars_in_scope = Reconciler::reconcileKeyedTypes(
|
||
$assert_type_assertions,
|
||
$assert_type_assertions,
|
||
$context->vars_in_scope,
|
||
$changed_var_ids,
|
||
array_map(
|
||
function ($_): bool {
|
||
return true;
|
||
},
|
||
$assert_type_assertions
|
||
),
|
||
$statements_analyzer,
|
||
$statements_analyzer->getTemplateTypeMap() ?: [],
|
||
$context->inside_loop,
|
||
new CodeLocation($statements_analyzer->getSource(), $stmt)
|
||
);
|
||
|
||
foreach ($changed_var_ids as $var_id => $_) {
|
||
$first_appearance = $statements_analyzer->getFirstAppearance($var_id);
|
||
|
||
if ($first_appearance
|
||
&& isset($context->vars_in_scope[$var_id])
|
||
&& $context->vars_in_scope[$var_id]->hasMixed()
|
||
) {
|
||
if (!$context->collect_initializations
|
||
&& !$context->collect_mutations
|
||
&& $statements_analyzer->getFilePath() === $statements_analyzer->getRootFilePath()
|
||
&& (!(($parent_source = $statements_analyzer->getSource())
|
||
instanceof \Psalm\Internal\Analyzer\FunctionLikeAnalyzer)
|
||
|| !$parent_source->getSource() instanceof \Psalm\Internal\Analyzer\TraitAnalyzer)
|
||
) {
|
||
$codebase->analyzer->decrementMixedCount($statements_analyzer->getFilePath());
|
||
}
|
||
|
||
IssueBuffer::remove(
|
||
$statements_analyzer->getFilePath(),
|
||
'MixedAssignment',
|
||
$first_appearance->raw_file_start
|
||
);
|
||
}
|
||
|
||
if (isset($op_vars_in_scope[$var_id])) {
|
||
$op_vars_in_scope[$var_id]->from_docblock = true;
|
||
}
|
||
}
|
||
|
||
$context->vars_in_scope = $op_vars_in_scope;
|
||
}
|
||
}
|
||
|
||
/**
|
||
* @param non-empty-string $function_id
|
||
*/
|
||
private static function getFunctionCallReturnType(
|
||
StatementsAnalyzer $statements_analyzer,
|
||
\Psalm\Codebase $codebase,
|
||
PhpParser\Node\Expr\FuncCall $stmt,
|
||
PhpParser\Node\Name $function_name,
|
||
string $function_id,
|
||
bool $in_call_map,
|
||
bool $is_stubbed,
|
||
?FunctionLikeStorage $function_storage,
|
||
?TCallable $callmap_callable,
|
||
TemplateResult $template_result,
|
||
Context $context
|
||
) : Type\Union {
|
||
$stmt_type = null;
|
||
$config = $codebase->config;
|
||
|
||
if ($codebase->functions->return_type_provider->has($function_id)) {
|
||
$stmt_type = $codebase->functions->return_type_provider->getReturnType(
|
||
$statements_analyzer,
|
||
$function_id,
|
||
$stmt->args,
|
||
$context,
|
||
new CodeLocation($statements_analyzer->getSource(), $function_name)
|
||
);
|
||
}
|
||
|
||
if (!$stmt_type) {
|
||
if (!$in_call_map || $is_stubbed) {
|
||
if ($function_storage && $function_storage->template_types) {
|
||
foreach ($function_storage->template_types as $template_name => $_) {
|
||
if (!isset($template_result->upper_bounds[$template_name])) {
|
||
if ($template_name === 'TFunctionArgCount') {
|
||
$template_result->upper_bounds[$template_name] = [
|
||
'fn-' . $function_id => [Type::getInt(false, count($stmt->args)), 0]
|
||
];
|
||
} elseif ($template_name === 'TPhpMajorVersion') {
|
||
$template_result->upper_bounds[$template_name] = [
|
||
'fn-' . $function_id => [Type::getInt(false, $codebase->php_major_version), 0]
|
||
];
|
||
} else {
|
||
$template_result->upper_bounds[$template_name] = [
|
||
'fn-' . $function_id => [Type::getEmpty(), 0]
|
||
];
|
||
}
|
||
}
|
||
}
|
||
}
|
||
|
||
if ($function_storage && !$context->isSuppressingExceptions($statements_analyzer)) {
|
||
$context->mergeFunctionExceptions(
|
||
$function_storage,
|
||
new CodeLocation($statements_analyzer->getSource(), $stmt)
|
||
);
|
||
}
|
||
|
||
try {
|
||
if ($function_storage && $function_storage->return_type) {
|
||
$return_type = clone $function_storage->return_type;
|
||
|
||
if ($template_result->upper_bounds && $function_storage->template_types) {
|
||
$return_type = \Psalm\Internal\Type\TypeExpander::expandUnion(
|
||
$codebase,
|
||
$return_type,
|
||
null,
|
||
null,
|
||
null
|
||
);
|
||
|
||
$return_type->replaceTemplateTypesWithArgTypes(
|
||
$template_result,
|
||
$codebase
|
||
);
|
||
}
|
||
|
||
$return_type = \Psalm\Internal\Type\TypeExpander::expandUnion(
|
||
$codebase,
|
||
$return_type,
|
||
null,
|
||
null,
|
||
null
|
||
);
|
||
|
||
$return_type_location = $function_storage->return_type_location;
|
||
|
||
if ($config->after_function_checks) {
|
||
$file_manipulations = [];
|
||
|
||
foreach ($config->after_function_checks as $plugin_fq_class_name) {
|
||
$plugin_fq_class_name::afterFunctionCallAnalysis(
|
||
$stmt,
|
||
$function_id,
|
||
$context,
|
||
$statements_analyzer->getSource(),
|
||
$codebase,
|
||
$return_type,
|
||
$file_manipulations
|
||
);
|
||
}
|
||
|
||
if ($file_manipulations) {
|
||
FileManipulationBuffer::add(
|
||
$statements_analyzer->getFilePath(),
|
||
$file_manipulations
|
||
);
|
||
}
|
||
}
|
||
|
||
$stmt_type = $return_type;
|
||
$return_type->by_ref = $function_storage->returns_by_ref;
|
||
|
||
// only check the type locally if it's defined externally
|
||
if ($return_type_location &&
|
||
!$is_stubbed && // makes lookups or array_* functions quicker
|
||
!$config->isInProjectDirs($return_type_location->file_path)
|
||
) {
|
||
$return_type->check(
|
||
$statements_analyzer,
|
||
new CodeLocation($statements_analyzer->getSource(), $stmt),
|
||
$statements_analyzer->getSuppressedIssues(),
|
||
$context->phantom_classes,
|
||
true,
|
||
false,
|
||
false,
|
||
$context->calling_method_id
|
||
);
|
||
}
|
||
}
|
||
} catch (\InvalidArgumentException $e) {
|
||
// this can happen when the function was defined in the Config startup script
|
||
$stmt_type = Type::getMixed();
|
||
}
|
||
} else {
|
||
if (!$callmap_callable) {
|
||
throw new \UnexpectedValueException('We should have a callmap callable here');
|
||
}
|
||
|
||
$stmt_type = self::getReturnTypeFromCallMapWithArgs(
|
||
$statements_analyzer,
|
||
$function_id,
|
||
$stmt->args,
|
||
$callmap_callable,
|
||
$context
|
||
);
|
||
}
|
||
}
|
||
|
||
if (!$stmt_type) {
|
||
$stmt_type = Type::getMixed();
|
||
}
|
||
|
||
if (!$statements_analyzer->data_flow_graph instanceof TaintFlowGraph || !$function_storage) {
|
||
return $stmt_type;
|
||
}
|
||
|
||
$return_node = self::taintReturnType(
|
||
$statements_analyzer,
|
||
$stmt,
|
||
$function_id,
|
||
$function_storage,
|
||
$stmt_type
|
||
);
|
||
|
||
if ($function_storage->proxy_calls !== null) {
|
||
foreach ($function_storage->proxy_calls as $proxy_call) {
|
||
$fake_call_arguments = [];
|
||
foreach ($proxy_call['params'] as $i) {
|
||
$fake_call_arguments[] = $stmt->args[$i];
|
||
}
|
||
|
||
$fake_call_factory = new BuilderFactory();
|
||
|
||
if (strpos($proxy_call['fqn'], '::') !== false) {
|
||
list($fqcn, $method) = explode('::', $proxy_call['fqn']);
|
||
$fake_call = $fake_call_factory->staticCall($fqcn, $method, $fake_call_arguments);
|
||
} else {
|
||
$fake_call = $fake_call_factory->funcCall($proxy_call['fqn'], $fake_call_arguments);
|
||
}
|
||
|
||
$old_node_data = $statements_analyzer->node_data;
|
||
$statements_analyzer->node_data = clone $statements_analyzer->node_data;
|
||
|
||
ExpressionAnalyzer::analyze($statements_analyzer, $fake_call, $context);
|
||
|
||
$statements_analyzer->node_data = $old_node_data;
|
||
|
||
if ($return_node && $proxy_call['return']) {
|
||
$fake_call_type = $statements_analyzer->node_data->getType($fake_call);
|
||
if (null !== $fake_call_type) {
|
||
foreach ($fake_call_type->parent_nodes as $fake_call_node) {
|
||
$statements_analyzer->data_flow_graph->addPath($fake_call_node, $return_node, 'return');
|
||
}
|
||
}
|
||
}
|
||
}
|
||
}
|
||
|
||
return $stmt_type;
|
||
}
|
||
|
||
/**
|
||
* @param list<PhpParser\Node\Arg> $call_args
|
||
*/
|
||
private static function getReturnTypeFromCallMapWithArgs(
|
||
StatementsAnalyzer $statements_analyzer,
|
||
string $function_id,
|
||
array $call_args,
|
||
TCallable $callmap_callable,
|
||
Context $context
|
||
): Type\Union {
|
||
$call_map_key = strtolower($function_id);
|
||
|
||
$codebase = $statements_analyzer->getCodebase();
|
||
|
||
if (!$call_args) {
|
||
switch ($call_map_key) {
|
||
case 'hrtime':
|
||
return new Type\Union([
|
||
new Type\Atomic\TKeyedArray([
|
||
Type::getInt(),
|
||
Type::getInt()
|
||
])
|
||
]);
|
||
|
||
case 'get_called_class':
|
||
return new Type\Union([
|
||
new Type\Atomic\TClassString(
|
||
$context->self ?: 'object',
|
||
$context->self ? new Type\Atomic\TNamedObject($context->self, true) : null
|
||
)
|
||
]);
|
||
|
||
case 'get_parent_class':
|
||
if ($context->self && $codebase->classExists($context->self)) {
|
||
$classlike_storage = $codebase->classlike_storage_provider->get($context->self);
|
||
|
||
if ($classlike_storage->parent_classes) {
|
||
return new Type\Union([
|
||
new Type\Atomic\TClassString(
|
||
\array_values($classlike_storage->parent_classes)[0]
|
||
)
|
||
]);
|
||
}
|
||
}
|
||
}
|
||
} else {
|
||
switch ($call_map_key) {
|
||
case 'count':
|
||
if (($first_arg_type = $statements_analyzer->node_data->getType($call_args[0]->value))) {
|
||
$atomic_types = $first_arg_type->getAtomicTypes();
|
||
|
||
if (count($atomic_types) === 1) {
|
||
if (isset($atomic_types['array'])) {
|
||
if ($atomic_types['array'] instanceof Type\Atomic\TCallableArray
|
||
|| $atomic_types['array'] instanceof Type\Atomic\TCallableList
|
||
|| $atomic_types['array'] instanceof Type\Atomic\TCallableKeyedArray
|
||
) {
|
||
return Type::getInt(false, 2);
|
||
}
|
||
|
||
if ($atomic_types['array'] instanceof Type\Atomic\TNonEmptyArray) {
|
||
return new Type\Union([
|
||
$atomic_types['array']->count !== null
|
||
? new Type\Atomic\TLiteralInt($atomic_types['array']->count)
|
||
: new Type\Atomic\TInt
|
||
]);
|
||
}
|
||
|
||
if ($atomic_types['array'] instanceof Type\Atomic\TNonEmptyList) {
|
||
return new Type\Union([
|
||
$atomic_types['array']->count !== null
|
||
? new Type\Atomic\TLiteralInt($atomic_types['array']->count)
|
||
: new Type\Atomic\TInt
|
||
]);
|
||
}
|
||
|
||
if ($atomic_types['array'] instanceof Type\Atomic\TKeyedArray
|
||
&& $atomic_types['array']->sealed
|
||
) {
|
||
return new Type\Union([
|
||
new Type\Atomic\TLiteralInt(count($atomic_types['array']->properties))
|
||
]);
|
||
}
|
||
}
|
||
}
|
||
}
|
||
|
||
break;
|
||
|
||
case 'hrtime':
|
||
if (($first_arg_type = $statements_analyzer->node_data->getType($call_args[0]->value))) {
|
||
if ((string) $first_arg_type === 'true') {
|
||
$int = Type::getInt();
|
||
$int->from_calculation = true;
|
||
return $int;
|
||
}
|
||
|
||
if ((string) $first_arg_type === 'false') {
|
||
return new Type\Union([
|
||
new Type\Atomic\TKeyedArray([
|
||
Type::getInt(),
|
||
Type::getInt()
|
||
])
|
||
]);
|
||
}
|
||
|
||
return new Type\Union([
|
||
new Type\Atomic\TKeyedArray([
|
||
Type::getInt(),
|
||
Type::getInt()
|
||
]),
|
||
new Type\Atomic\TInt()
|
||
]);
|
||
}
|
||
|
||
$int = Type::getInt();
|
||
$int->from_calculation = true;
|
||
return $int;
|
||
|
||
case 'min':
|
||
case 'max':
|
||
if (isset($call_args[0])) {
|
||
$first_arg = $call_args[0]->value;
|
||
|
||
if ($first_arg_type = $statements_analyzer->node_data->getType($first_arg)) {
|
||
if ($first_arg_type->hasArray()) {
|
||
/** @psalm-suppress PossiblyUndefinedStringArrayOffset */
|
||
$array_type = $first_arg_type->getAtomicTypes()['array'];
|
||
if ($array_type instanceof Type\Atomic\TKeyedArray) {
|
||
return $array_type->getGenericValueType();
|
||
}
|
||
|
||
if ($array_type instanceof Type\Atomic\TArray) {
|
||
return clone $array_type->type_params[1];
|
||
}
|
||
|
||
if ($array_type instanceof Type\Atomic\TList) {
|
||
return clone $array_type->type_param;
|
||
}
|
||
} elseif ($first_arg_type->hasScalarType()
|
||
&& ($second_arg = ($call_args[1]->value ?? null))
|
||
&& ($second_arg_type = $statements_analyzer->node_data->getType($second_arg))
|
||
&& $second_arg_type->hasScalarType()
|
||
) {
|
||
return Type::combineUnionTypes($first_arg_type, $second_arg_type);
|
||
}
|
||
}
|
||
}
|
||
|
||
break;
|
||
|
||
case 'get_parent_class':
|
||
// this is unreliable, as it's hard to know exactly what's wanted - attempted this in
|
||
// https://github.com/vimeo/psalm/commit/355ed831e1c69c96bbf9bf2654ef64786cbe9fd7
|
||
// but caused problems where it didn’t know exactly what level of child we
|
||
// were receiving.
|
||
//
|
||
// Really this should only work on instances we've created with new Foo(),
|
||
// but that requires more work
|
||
break;
|
||
|
||
case 'fgetcsv':
|
||
$string_type = Type::getString();
|
||
$string_type->addType(new Type\Atomic\TNull);
|
||
$string_type->ignore_nullable_issues = true;
|
||
|
||
$call_map_return_type = new Type\Union([
|
||
new Type\Atomic\TNonEmptyList(
|
||
$string_type
|
||
),
|
||
new Type\Atomic\TFalse,
|
||
new Type\Atomic\TNull
|
||
]);
|
||
|
||
if ($codebase->config->ignore_internal_nullable_issues) {
|
||
$call_map_return_type->ignore_nullable_issues = true;
|
||
}
|
||
|
||
if ($codebase->config->ignore_internal_falsable_issues) {
|
||
$call_map_return_type->ignore_falsable_issues = true;
|
||
}
|
||
|
||
return $call_map_return_type;
|
||
}
|
||
}
|
||
|
||
$stmt_type = $callmap_callable->return_type
|
||
? clone $callmap_callable->return_type
|
||
: Type::getMixed();
|
||
|
||
switch ($function_id) {
|
||
case 'mb_strpos':
|
||
case 'mb_strrpos':
|
||
case 'mb_stripos':
|
||
case 'mb_strripos':
|
||
case 'strpos':
|
||
case 'strrpos':
|
||
case 'stripos':
|
||
case 'strripos':
|
||
case 'strstr':
|
||
case 'stristr':
|
||
case 'strrchr':
|
||
case 'strpbrk':
|
||
case 'array_search':
|
||
break;
|
||
|
||
default:
|
||
if ($stmt_type->isFalsable()
|
||
&& $codebase->config->ignore_internal_falsable_issues
|
||
) {
|
||
$stmt_type->ignore_falsable_issues = true;
|
||
}
|
||
}
|
||
|
||
switch ($call_map_key) {
|
||
case 'array_replace':
|
||
case 'array_replace_recursive':
|
||
if ($codebase->config->ignore_internal_nullable_issues) {
|
||
$stmt_type->ignore_nullable_issues = true;
|
||
}
|
||
break;
|
||
}
|
||
|
||
return $stmt_type;
|
||
}
|
||
|
||
private static function taintReturnType(
|
||
StatementsAnalyzer $statements_analyzer,
|
||
PhpParser\Node\Expr\FuncCall $stmt,
|
||
string $function_id,
|
||
FunctionLikeStorage $function_storage,
|
||
Type\Union $stmt_type
|
||
) : ?DataFlowNode {
|
||
if (!$statements_analyzer->data_flow_graph instanceof TaintFlowGraph
|
||
|| \in_array('TaintedInput', $statements_analyzer->getSuppressedIssues())
|
||
) {
|
||
return null;
|
||
}
|
||
|
||
$node_location = new CodeLocation($statements_analyzer->getSource(), $stmt);
|
||
|
||
$function_call_node = DataFlowNode::getForMethodReturn(
|
||
$function_id,
|
||
$function_id,
|
||
$function_storage->signature_return_type_location ?: $function_storage->location,
|
||
$function_storage->specialize_call ? $node_location : null
|
||
);
|
||
|
||
$statements_analyzer->data_flow_graph->addNode($function_call_node);
|
||
|
||
$stmt_type->parent_nodes[$function_call_node->id] = $function_call_node;
|
||
|
||
if ($function_storage->return_source_params) {
|
||
$removed_taints = $function_storage->removed_taints;
|
||
|
||
if ($function_id === 'preg_replace' && count($stmt->args) > 2) {
|
||
$first_stmt_type = $statements_analyzer->node_data->getType($stmt->args[0]->value);
|
||
$second_stmt_type = $statements_analyzer->node_data->getType($stmt->args[1]->value);
|
||
|
||
if ($first_stmt_type
|
||
&& $second_stmt_type
|
||
&& $first_stmt_type->isSingleStringLiteral()
|
||
&& $second_stmt_type->isSingleStringLiteral()
|
||
) {
|
||
$first_arg_value = $first_stmt_type->getSingleStringLiteral()->value;
|
||
|
||
$pattern = \substr($first_arg_value, 1, -1);
|
||
|
||
if ($pattern[0] === '['
|
||
&& $pattern[1] === '^'
|
||
&& \substr($pattern, -1) === ']'
|
||
) {
|
||
$pattern = \substr($pattern, 2, -1);
|
||
|
||
if (self::simpleExclusion($pattern, $first_arg_value[0])) {
|
||
$removed_taints[] = 'html';
|
||
$removed_taints[] = 'sql';
|
||
}
|
||
}
|
||
}
|
||
}
|
||
|
||
foreach ($function_storage->return_source_params as $i => $path_type) {
|
||
if (!isset($stmt->args[$i])) {
|
||
continue;
|
||
}
|
||
|
||
$arg_location = new CodeLocation(
|
||
$statements_analyzer->getSource(),
|
||
$stmt->args[$i]->value
|
||
);
|
||
|
||
$function_param_sink = DataFlowNode::getForMethodArgument(
|
||
$function_id,
|
||
$function_id,
|
||
$i,
|
||
$arg_location,
|
||
$function_storage->specialize_call ? $node_location : null
|
||
);
|
||
|
||
$statements_analyzer->data_flow_graph->addNode($function_param_sink);
|
||
|
||
$statements_analyzer->data_flow_graph->addPath(
|
||
$function_param_sink,
|
||
$function_call_node,
|
||
$path_type,
|
||
$function_storage->added_taints,
|
||
$removed_taints
|
||
);
|
||
}
|
||
}
|
||
|
||
if ($function_storage->taint_source_types) {
|
||
$method_node = TaintSource::getForMethodReturn(
|
||
$function_id,
|
||
$function_id,
|
||
$node_location
|
||
);
|
||
|
||
$method_node->taints = $function_storage->taint_source_types;
|
||
|
||
$statements_analyzer->data_flow_graph->addSource($method_node);
|
||
}
|
||
|
||
return $function_call_node;
|
||
}
|
||
|
||
/**
|
||
* @psalm-pure
|
||
*/
|
||
private static function simpleExclusion(string $pattern, string $escape_char) : bool
|
||
{
|
||
$str_length = \strlen($pattern);
|
||
|
||
for ($i = 0; $i < $str_length; $i++) {
|
||
$current = $pattern[$i];
|
||
$next = $pattern[$i + 1] ?? null;
|
||
|
||
if ($current === '\\') {
|
||
if ($next == null
|
||
|| $next === 'x'
|
||
|| $next === 'u'
|
||
) {
|
||
return false;
|
||
}
|
||
|
||
if ($next === '.'
|
||
|| $next === '('
|
||
|| $next === ')'
|
||
|| $next === '['
|
||
|| $next === ']'
|
||
|| $next === 's'
|
||
|| $next === 'w'
|
||
|| $next === $escape_char
|
||
) {
|
||
$i++;
|
||
continue;
|
||
}
|
||
|
||
return false;
|
||
}
|
||
|
||
if ($next !== '-') {
|
||
if ($current === '_'
|
||
|| $current === '-'
|
||
|| $current === '|'
|
||
|| $current === ':'
|
||
|| $current === '#'
|
||
|| $current === '.'
|
||
|| $current === ' '
|
||
) {
|
||
continue;
|
||
}
|
||
|
||
return false;
|
||
}
|
||
|
||
if ($current === ']') {
|
||
return false;
|
||
}
|
||
|
||
if (!isset($pattern[$i + 2])) {
|
||
return false;
|
||
}
|
||
|
||
if (($current === 'a' && $pattern[$i + 2] === 'z')
|
||
|| ($current === 'a' && $pattern[$i + 2] === 'Z')
|
||
|| ($current === 'A' && $pattern[$i + 2] === 'Z')
|
||
|| ($current === '0' && $pattern[$i + 2] === '9')
|
||
) {
|
||
$i += 2;
|
||
continue;
|
||
}
|
||
|
||
return false;
|
||
}
|
||
|
||
return true;
|
||
}
|
||
|
||
private static function checkFunctionCallPurity(
|
||
StatementsAnalyzer $statements_analyzer,
|
||
\Psalm\Codebase $codebase,
|
||
PhpParser\Node\Expr\FuncCall $stmt,
|
||
PhpParser\Node $function_name,
|
||
?string $function_id,
|
||
bool $in_call_map,
|
||
?FunctionLikeStorage $function_storage,
|
||
Context $context
|
||
) : void {
|
||
$config = $codebase->config;
|
||
|
||
if (!$context->collect_initializations
|
||
&& !$context->collect_mutations
|
||
&& ($context->mutation_free
|
||
|| $context->external_mutation_free
|
||
|| $codebase->find_unused_variables
|
||
|| !$config->remember_property_assignments_after_call
|
||
|| ($statements_analyzer->getSource() instanceof \Psalm\Internal\Analyzer\FunctionLikeAnalyzer
|
||
&& $statements_analyzer->getSource()->track_mutations))
|
||
) {
|
||
$must_use = true;
|
||
|
||
$callmap_function_pure = $function_id && $in_call_map
|
||
? $codebase->functions->isCallMapFunctionPure(
|
||
$codebase,
|
||
$statements_analyzer->node_data,
|
||
$function_id,
|
||
$stmt->args,
|
||
$must_use
|
||
)
|
||
: null;
|
||
|
||
if ((!$in_call_map
|
||
&& $function_storage
|
||
&& !$function_storage->pure)
|
||
|| ($callmap_function_pure === false)
|
||
) {
|
||
if ($context->mutation_free || $context->external_mutation_free) {
|
||
if (IssueBuffer::accepts(
|
||
new ImpureFunctionCall(
|
||
'Cannot call an impure function from a mutation-free context',
|
||
new CodeLocation($statements_analyzer, $function_name)
|
||
),
|
||
$statements_analyzer->getSuppressedIssues()
|
||
)) {
|
||
// fall through
|
||
}
|
||
} elseif ($statements_analyzer->getSource() instanceof \Psalm\Internal\Analyzer\FunctionLikeAnalyzer
|
||
&& $statements_analyzer->getSource()->track_mutations
|
||
) {
|
||
$statements_analyzer->getSource()->inferred_has_mutation = true;
|
||
$statements_analyzer->getSource()->inferred_impure = true;
|
||
}
|
||
|
||
if (!$config->remember_property_assignments_after_call) {
|
||
$context->removeAllObjectVars();
|
||
}
|
||
} elseif ($function_id
|
||
&& (($function_storage
|
||
&& $function_storage->pure
|
||
&& !$function_storage->assertions
|
||
&& $must_use)
|
||
|| ($callmap_function_pure === true && $must_use))
|
||
&& $codebase->find_unused_variables
|
||
&& !$context->inside_conditional
|
||
&& !$context->inside_unset
|
||
) {
|
||
if (!$context->inside_assignment && !$context->inside_call && !$context->inside_use) {
|
||
if (IssueBuffer::accepts(
|
||
new UnusedFunctionCall(
|
||
'The call to ' . $function_id . ' is not used',
|
||
new CodeLocation($statements_analyzer, $function_name),
|
||
$function_id
|
||
),
|
||
$statements_analyzer->getSuppressedIssues()
|
||
)) {
|
||
// fall through
|
||
}
|
||
} else {
|
||
/** @psalm-suppress UndefinedPropertyAssignment */
|
||
$stmt->pure = true;
|
||
}
|
||
}
|
||
}
|
||
}
|
||
|
||
private static function handleNamedFunction(
|
||
StatementsAnalyzer $statements_analyzer,
|
||
\Psalm\Codebase $codebase,
|
||
PhpParser\Node\Expr\FuncCall $stmt,
|
||
PhpParser\Node\Expr\FuncCall $real_stmt,
|
||
PhpParser\Node\Name $function_name,
|
||
?string $function_id,
|
||
Context $context
|
||
) : void {
|
||
$first_arg = isset($stmt->args[0]) ? $stmt->args[0] : null;
|
||
|
||
if ($function_name->parts === ['get_class']
|
||
|| $function_name->parts === ['gettype']
|
||
|| $function_name->parts === ['get_debug_type']
|
||
) {
|
||
if ($first_arg) {
|
||
$var = $first_arg->value;
|
||
|
||
if ($var instanceof PhpParser\Node\Expr\Variable
|
||
&& is_string($var->name)
|
||
) {
|
||
$var_id = '$' . $var->name;
|
||
|
||
if (isset($context->vars_in_scope[$var_id])) {
|
||
if ($function_name->parts === ['get_class']) {
|
||
$atomic_type = new Type\Atomic\TDependentGetClass(
|
||
$var_id,
|
||
$context->vars_in_scope[$var_id]->hasMixed()
|
||
? Type::getObject()
|
||
: $context->vars_in_scope[$var_id]
|
||
);
|
||
} elseif ($function_name->parts === ['gettype']) {
|
||
$atomic_type = new Type\Atomic\TDependentGetType($var_id);
|
||
} else {
|
||
$atomic_type = new Type\Atomic\TDependentGetDebugType($var_id);
|
||
}
|
||
|
||
$statements_analyzer->node_data->setType($real_stmt, new Type\Union([$atomic_type]));
|
||
}
|
||
} elseif (($var_type = $statements_analyzer->node_data->getType($var))
|
||
&& ($function_name->parts === ['get_class']
|
||
|| $function_name->parts === ['get_debug_type']
|
||
)
|
||
) {
|
||
$class_string_types = [];
|
||
|
||
foreach ($var_type->getAtomicTypes() as $class_type) {
|
||
if ($class_type instanceof Type\Atomic\TNamedObject) {
|
||
$class_string_types[] = new Type\Atomic\TClassString($class_type->value, clone $class_type);
|
||
} elseif ($class_type instanceof Type\Atomic\TTemplateParam
|
||
&& $class_type->as->isSingle()
|
||
) {
|
||
$as_atomic_type = \array_values($class_type->as->getAtomicTypes())[0];
|
||
|
||
if ($as_atomic_type instanceof Type\Atomic\TObject) {
|
||
$class_string_types[] = new Type\Atomic\TTemplateParamClass(
|
||
$class_type->param_name,
|
||
'object',
|
||
null,
|
||
$class_type->defining_class
|
||
);
|
||
} elseif ($as_atomic_type instanceof TNamedObject) {
|
||
$class_string_types[] = new Type\Atomic\TTemplateParamClass(
|
||
$class_type->param_name,
|
||
$as_atomic_type->value,
|
||
$as_atomic_type,
|
||
$class_type->defining_class
|
||
);
|
||
}
|
||
} elseif ($function_name->parts === ['get_class']) {
|
||
$class_string_types[] = new Type\Atomic\TClassString();
|
||
} elseif ($function_name->parts === ['get_debug_type']) {
|
||
if ($class_type instanceof Type\Atomic\TInt) {
|
||
$class_string_types[] = new Type\Atomic\TLiteralString('int');
|
||
} elseif ($class_type instanceof Type\Atomic\TString) {
|
||
$class_string_types[] = new Type\Atomic\TLiteralString('string');
|
||
} elseif ($class_type instanceof Type\Atomic\TFloat) {
|
||
$class_string_types[] = new Type\Atomic\TLiteralString('float');
|
||
} elseif ($class_type instanceof Type\Atomic\TBool) {
|
||
$class_string_types[] = new Type\Atomic\TLiteralString('bool');
|
||
} elseif ($class_type instanceof Type\Atomic\TClosedResource) {
|
||
$class_string_types[] = new Type\Atomic\TLiteralString('resource (closed)');
|
||
} elseif ($class_type instanceof Type\Atomic\TNull) {
|
||
$class_string_types[] = new Type\Atomic\TLiteralString('null');
|
||
} else {
|
||
$class_string_types[] = new Type\Atomic\TString();
|
||
}
|
||
}
|
||
}
|
||
|
||
if ($class_string_types) {
|
||
$statements_analyzer->node_data->setType($real_stmt, new Type\Union($class_string_types));
|
||
}
|
||
}
|
||
} elseif ($function_name->parts === ['get_class']
|
||
&& ($get_class_name = $statements_analyzer->getFQCLN())
|
||
) {
|
||
$statements_analyzer->node_data->setType(
|
||
$real_stmt,
|
||
new Type\Union([
|
||
new Type\Atomic\TClassString(
|
||
$get_class_name,
|
||
new Type\Atomic\TNamedObject($get_class_name)
|
||
)
|
||
])
|
||
);
|
||
}
|
||
|
||
return;
|
||
}
|
||
|
||
if ($function_name->parts === ['method_exists']) {
|
||
$second_arg = isset($stmt->args[1]) ? $stmt->args[1] : null;
|
||
|
||
if ($first_arg
|
||
&& $first_arg->value instanceof PhpParser\Node\Expr\Variable
|
||
&& $second_arg
|
||
&& $second_arg->value instanceof PhpParser\Node\Scalar\String_
|
||
) {
|
||
// do nothing
|
||
} else {
|
||
$context->check_methods = false;
|
||
}
|
||
|
||
return;
|
||
}
|
||
|
||
if ($function_name->parts === ['class_exists']) {
|
||
if ($first_arg) {
|
||
if ($first_arg->value instanceof PhpParser\Node\Scalar\String_) {
|
||
if (!$codebase->classlikes->classExists($first_arg->value->value)) {
|
||
$context->phantom_classes[strtolower($first_arg->value->value)] = true;
|
||
}
|
||
} elseif ($first_arg->value instanceof PhpParser\Node\Expr\ClassConstFetch
|
||
&& $first_arg->value->class instanceof PhpParser\Node\Name
|
||
&& $first_arg->value->name instanceof PhpParser\Node\Identifier
|
||
&& $first_arg->value->name->name === 'class'
|
||
) {
|
||
$resolved_name = (string) $first_arg->value->class->getAttribute('resolvedName');
|
||
|
||
if (!$codebase->classlikes->classExists($resolved_name)) {
|
||
$context->phantom_classes[strtolower($resolved_name)] = true;
|
||
}
|
||
}
|
||
}
|
||
|
||
return;
|
||
}
|
||
|
||
if ($function_name->parts === ['interface_exists']) {
|
||
if ($first_arg) {
|
||
if ($first_arg->value instanceof PhpParser\Node\Scalar\String_) {
|
||
$context->phantom_classes[strtolower($first_arg->value->value)] = true;
|
||
} elseif ($first_arg->value instanceof PhpParser\Node\Expr\ClassConstFetch
|
||
&& $first_arg->value->class instanceof PhpParser\Node\Name
|
||
&& $first_arg->value->name instanceof PhpParser\Node\Identifier
|
||
&& $first_arg->value->name->name === 'class'
|
||
) {
|
||
$resolved_name = (string) $first_arg->value->class->getAttribute('resolvedName');
|
||
|
||
if (!$codebase->classlikes->interfaceExists($resolved_name)) {
|
||
$context->phantom_classes[strtolower($resolved_name)] = true;
|
||
}
|
||
}
|
||
}
|
||
|
||
return;
|
||
}
|
||
|
||
if ($function_name->parts === ['file_exists'] && $first_arg) {
|
||
$var_id = ExpressionIdentifier::getArrayVarId($first_arg->value, null);
|
||
|
||
if ($var_id) {
|
||
$context->phantom_files[$var_id] = true;
|
||
}
|
||
|
||
return;
|
||
}
|
||
|
||
if ($function_name->parts === ['extension_loaded']) {
|
||
if ($first_arg
|
||
&& $first_arg->value instanceof PhpParser\Node\Scalar\String_
|
||
) {
|
||
if (@extension_loaded($first_arg->value->value)) {
|
||
// do nothing
|
||
} else {
|
||
$context->check_classes = false;
|
||
}
|
||
}
|
||
|
||
return;
|
||
}
|
||
|
||
if ($function_name->parts === ['function_exists']) {
|
||
$context->check_functions = false;
|
||
return;
|
||
}
|
||
|
||
if ($function_name->parts === ['is_callable']) {
|
||
$context->check_methods = false;
|
||
$context->check_functions = false;
|
||
return;
|
||
}
|
||
|
||
if ($function_name->parts === ['defined']) {
|
||
$context->check_consts = false;
|
||
return;
|
||
}
|
||
|
||
if ($function_name->parts === ['extract']) {
|
||
$context->check_variables = false;
|
||
|
||
foreach ($context->vars_in_scope as $var_id => $_) {
|
||
if ($var_id === '$this' || strpos($var_id, '[') || strpos($var_id, '>')) {
|
||
continue;
|
||
}
|
||
|
||
$mixed_type = Type::getMixed();
|
||
$mixed_type->parent_nodes = $context->vars_in_scope[$var_id]->parent_nodes;
|
||
|
||
$context->vars_in_scope[$var_id] = $mixed_type;
|
||
$context->assigned_var_ids[$var_id] = (int) $stmt->getAttribute('startFilePos');
|
||
$context->possibly_assigned_var_ids[$var_id] = true;
|
||
}
|
||
|
||
return;
|
||
}
|
||
|
||
if ($function_name->parts === ['compact']) {
|
||
$all_args_string_literals = true;
|
||
$new_items = [];
|
||
|
||
foreach ($stmt->args as $arg) {
|
||
$arg_type = $statements_analyzer->node_data->getType($arg->value);
|
||
|
||
if (!$arg_type || !$arg_type->isSingleStringLiteral()) {
|
||
$all_args_string_literals = false;
|
||
break;
|
||
}
|
||
|
||
$var_name = $arg_type->getSingleStringLiteral()->value;
|
||
|
||
$new_items[] = new PhpParser\Node\Expr\ArrayItem(
|
||
new PhpParser\Node\Expr\Variable($var_name, $arg->value->getAttributes()),
|
||
new PhpParser\Node\Scalar\String_($var_name, $arg->value->getAttributes()),
|
||
false,
|
||
$arg->getAttributes()
|
||
);
|
||
}
|
||
|
||
if ($all_args_string_literals) {
|
||
$arr = new PhpParser\Node\Expr\Array_($new_items, $stmt->getAttributes());
|
||
$old_node_data = $statements_analyzer->node_data;
|
||
$statements_analyzer->node_data = clone $statements_analyzer->node_data;
|
||
|
||
ExpressionAnalyzer::analyze($statements_analyzer, $arr, $context);
|
||
|
||
$arr_type = $statements_analyzer->node_data->getType($arr);
|
||
|
||
$statements_analyzer->node_data = $old_node_data;
|
||
|
||
if ($arr_type) {
|
||
$statements_analyzer->node_data->setType($stmt, $arr_type);
|
||
}
|
||
}
|
||
|
||
return;
|
||
}
|
||
|
||
if ($function_name->parts === ['func_get_args']) {
|
||
$source = $statements_analyzer->getSource();
|
||
|
||
if ($statements_analyzer->data_flow_graph
|
||
&& $source instanceof \Psalm\Internal\Analyzer\FunctionLikeAnalyzer
|
||
) {
|
||
if ($statements_analyzer->data_flow_graph instanceof \Psalm\Internal\Codebase\VariableUseGraph) {
|
||
foreach ($source->param_nodes as $param_node) {
|
||
$statements_analyzer->data_flow_graph->addPath(
|
||
$param_node,
|
||
new DataFlowNode('variable-use', 'variable use', null),
|
||
'variable-use'
|
||
);
|
||
}
|
||
}
|
||
}
|
||
|
||
return;
|
||
}
|
||
|
||
if (strtolower($function_name->parts[0]) === 'var_dump'
|
||
|| strtolower($function_name->parts[0]) === 'shell_exec') {
|
||
if (IssueBuffer::accepts(
|
||
new ForbiddenCode(
|
||
'Unsafe ' . implode('', $function_name->parts),
|
||
new CodeLocation($statements_analyzer->getSource(), $stmt)
|
||
),
|
||
$statements_analyzer->getSuppressedIssues()
|
||
)) {
|
||
// continue
|
||
}
|
||
}
|
||
|
||
if (isset($codebase->config->forbidden_functions[strtolower((string) $function_name)])) {
|
||
if (IssueBuffer::accepts(
|
||
new ForbiddenCode(
|
||
'You have forbidden the use of ' . $function_name,
|
||
new CodeLocation($statements_analyzer->getSource(), $stmt)
|
||
),
|
||
$statements_analyzer->getSuppressedIssues()
|
||
)) {
|
||
// continue
|
||
}
|
||
|
||
return;
|
||
}
|
||
|
||
if ($function_name->parts === ['define']) {
|
||
if ($first_arg) {
|
||
$fq_const_name = ConstFetchAnalyzer::getConstName(
|
||
$first_arg->value,
|
||
$statements_analyzer->node_data,
|
||
$codebase,
|
||
$statements_analyzer->getAliases()
|
||
);
|
||
|
||
if ($fq_const_name !== null && isset($stmt->args[1])) {
|
||
$second_arg = $stmt->args[1];
|
||
$was_in_call = $context->inside_call;
|
||
$context->inside_call = true;
|
||
ExpressionAnalyzer::analyze($statements_analyzer, $second_arg->value, $context);
|
||
$context->inside_call = $was_in_call;
|
||
|
||
ConstFetchAnalyzer::setConstType(
|
||
$statements_analyzer,
|
||
$fq_const_name,
|
||
$statements_analyzer->node_data->getType($second_arg->value) ?: Type::getMixed(),
|
||
$context
|
||
);
|
||
}
|
||
} else {
|
||
$context->check_consts = false;
|
||
}
|
||
|
||
return;
|
||
}
|
||
|
||
if ($function_name->parts === ['constant']) {
|
||
if ($first_arg) {
|
||
$fq_const_name = ConstFetchAnalyzer::getConstName(
|
||
$first_arg->value,
|
||
$statements_analyzer->node_data,
|
||
$codebase,
|
||
$statements_analyzer->getAliases()
|
||
);
|
||
|
||
if ($fq_const_name !== null) {
|
||
$const_type = ConstFetchAnalyzer::getConstType(
|
||
$statements_analyzer,
|
||
$fq_const_name,
|
||
true,
|
||
$context
|
||
);
|
||
|
||
if ($const_type) {
|
||
$statements_analyzer->node_data->setType($real_stmt, $const_type);
|
||
}
|
||
}
|
||
} else {
|
||
$context->check_consts = false;
|
||
}
|
||
}
|
||
|
||
if ($first_arg
|
||
&& $function_id
|
||
&& strpos($function_id, 'is_') === 0
|
||
&& $function_id !== 'is_a'
|
||
&& !$context->inside_negation
|
||
) {
|
||
$stmt_assertions = $statements_analyzer->node_data->getAssertions($stmt);
|
||
|
||
if ($stmt_assertions !== null) {
|
||
$anded_assertions = $stmt_assertions;
|
||
} else {
|
||
$anded_assertions = AssertionFinder::processFunctionCall(
|
||
$stmt,
|
||
$context->self,
|
||
$statements_analyzer,
|
||
$codebase,
|
||
$context->inside_negation
|
||
);
|
||
}
|
||
|
||
$changed_vars = [];
|
||
|
||
foreach ($anded_assertions as $assertions) {
|
||
$referenced_var_ids = array_map(
|
||
function (array $_) : bool {
|
||
return true;
|
||
},
|
||
$assertions
|
||
);
|
||
|
||
Reconciler::reconcileKeyedTypes(
|
||
$assertions,
|
||
$assertions,
|
||
$context->vars_in_scope,
|
||
$changed_vars,
|
||
$referenced_var_ids,
|
||
$statements_analyzer,
|
||
[],
|
||
$context->inside_loop,
|
||
new CodeLocation($statements_analyzer->getSource(), $stmt)
|
||
);
|
||
}
|
||
|
||
return;
|
||
}
|
||
|
||
if ($first_arg && $function_id === 'strtolower') {
|
||
$first_arg_type = $statements_analyzer->node_data->getType($first_arg->value);
|
||
|
||
if ($first_arg_type
|
||
&& UnionTypeComparator::isContainedBy(
|
||
$codebase,
|
||
$first_arg_type,
|
||
new Type\Union([new Type\Atomic\TLowercaseString()])
|
||
)
|
||
) {
|
||
if ($first_arg_type->from_docblock) {
|
||
if (IssueBuffer::accepts(
|
||
new \Psalm\Issue\RedundantConditionGivenDocblockType(
|
||
'The call to strtolower is unnecessary given the docblock type',
|
||
new CodeLocation($statements_analyzer, $function_name),
|
||
null
|
||
),
|
||
$statements_analyzer->getSuppressedIssues()
|
||
)) {
|
||
// fall through
|
||
}
|
||
} else {
|
||
if (IssueBuffer::accepts(
|
||
new \Psalm\Issue\RedundantCondition(
|
||
'The call to strtolower is unnecessary',
|
||
new CodeLocation($statements_analyzer, $function_name),
|
||
null
|
||
),
|
||
$statements_analyzer->getSuppressedIssues()
|
||
)) {
|
||
// fall through
|
||
}
|
||
}
|
||
}
|
||
}
|
||
}
|
||
}
|