mirror of
https://github.com/danog/psalm.git
synced 2024-12-17 03:47:04 +01:00
1363 lines
54 KiB
PHP
1363 lines
54 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 Psalm\Codebase;
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use Psalm\Internal\Analyzer\ClassLikeAnalyzer;
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use Psalm\Internal\Analyzer\MethodAnalyzer;
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use Psalm\Internal\Analyzer\Statements\Block\ForeachAnalyzer;
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use Psalm\Internal\Analyzer\Statements\Expression\CallAnalyzer;
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use Psalm\Internal\Analyzer\Statements\Expression\ExpressionIdentifier;
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use Psalm\Internal\Analyzer\Statements\Expression\CastAnalyzer;
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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\DataFlow\TaintSink;
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use Psalm\Internal\DataFlow\DataFlowNode;
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use Psalm\Internal\Codebase\TaintFlowGraph;
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use Psalm\Internal\MethodIdentifier;
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use Psalm\Internal\Type\TemplateBound;
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use Psalm\Internal\Type\TemplateResult;
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use Psalm\Internal\Type\UnionTemplateHandler;
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use Psalm\CodeLocation;
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use Psalm\Context;
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use Psalm\Issue\ImplicitToStringCast;
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use Psalm\Issue\InvalidArgument;
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use Psalm\Issue\InvalidScalarArgument;
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use Psalm\Issue\InvalidLiteralArgument;
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use Psalm\Issue\MixedArgument;
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use Psalm\Issue\MixedArgumentTypeCoercion;
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use Psalm\Issue\NoValue;
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use Psalm\Issue\NullArgument;
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use Psalm\Issue\PossiblyFalseArgument;
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use Psalm\Issue\PossiblyInvalidArgument;
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use Psalm\Issue\PossiblyNullArgument;
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use Psalm\Issue\ArgumentTypeCoercion;
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use Psalm\IssueBuffer;
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use Psalm\Storage\FunctionLikeParameter;
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use Psalm\Type;
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use Psalm\Type\Atomic\TArray;
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use Psalm\Type\Atomic\TClassString;
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use Psalm\Type\Atomic\TCallable;
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use Psalm\Type\Atomic\TList;
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use function strtolower;
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use function strpos;
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use function explode;
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use function count;
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/**
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* @internal
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*/
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class ArgumentAnalyzer
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{
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/**
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* @param array<string, array<string, Type\Union>> $class_generic_params
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* @return false|null
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*/
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public static function checkArgumentMatches(
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StatementsAnalyzer $statements_analyzer,
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?string $cased_method_id,
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?MethodIdentifier $method_id,
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?string $self_fq_class_name,
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?string $static_fq_class_name,
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CodeLocation $function_call_location,
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?FunctionLikeParameter $function_param,
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int $argument_offset,
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int $unpacked_argument_offset,
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bool $allow_named_args,
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PhpParser\Node\Arg $arg,
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?Type\Union $arg_value_type,
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Context $context,
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array $class_generic_params,
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?TemplateResult $template_result,
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bool $specialize_taint,
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bool $in_call_map
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): ?bool {
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$codebase = $statements_analyzer->getCodebase();
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if (!$arg_value_type) {
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if ($function_param && !$function_param->by_ref) {
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if (!$context->collect_initializations
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&& !$context->collect_mutations
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&& $statements_analyzer->getFilePath() === $statements_analyzer->getRootFilePath()
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&& (!(($parent_source = $statements_analyzer->getSource())
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instanceof \Psalm\Internal\Analyzer\FunctionLikeAnalyzer)
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|| !$parent_source->getSource() instanceof \Psalm\Internal\Analyzer\TraitAnalyzer)
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) {
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$codebase->analyzer->incrementMixedCount($statements_analyzer->getFilePath());
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}
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$param_type = $function_param->type;
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if ($function_param->is_variadic
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&& $param_type
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&& $param_type->hasArray()
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) {
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/**
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* @psalm-suppress PossiblyUndefinedStringArrayOffset
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* @var TList|TArray
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*/
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$array_type = $param_type->getAtomicTypes()['array'];
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if ($array_type instanceof TList) {
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$param_type = $array_type->type_param;
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} else {
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$param_type = $array_type->type_params[1];
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}
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}
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if ($param_type && !$param_type->hasMixed()) {
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if (IssueBuffer::accepts(
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new MixedArgument(
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'Argument ' . ($argument_offset + 1) . ' of ' . $cased_method_id
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. ' cannot be mixed, expecting ' . $param_type,
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new CodeLocation($statements_analyzer->getSource(), $arg->value),
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$cased_method_id
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),
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$statements_analyzer->getSuppressedIssues()
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)) {
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// fall through
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}
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}
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}
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return null;
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}
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if (!$function_param) {
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return null;
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}
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if ($function_param->expect_variable
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&& $arg_value_type->isSingleStringLiteral()
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&& !$arg->value instanceof PhpParser\Node\Scalar\MagicConst
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&& !$arg->value instanceof PhpParser\Node\Expr\ConstFetch
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) {
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$values = \preg_split('//u', $arg_value_type->getSingleStringLiteral()->value, -1, \PREG_SPLIT_NO_EMPTY);
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$prev_ord = 0;
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$gt_count = 0;
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foreach ($values as $value) {
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$ord = \ord($value);
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if ($ord > $prev_ord) {
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$gt_count++;
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}
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$prev_ord = $ord;
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}
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if (count($values) < 12 || ($gt_count / count($values)) < 0.8) {
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if (IssueBuffer::accepts(
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new InvalidLiteralArgument(
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'Argument ' . ($argument_offset + 1) . ' of ' . $cased_method_id
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. ' expects a non-literal value, ' . $arg_value_type->getId() . ' provided',
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new CodeLocation($statements_analyzer->getSource(), $arg->value),
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$cased_method_id
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),
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$statements_analyzer->getSuppressedIssues()
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)) {
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// fall through
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}
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}
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}
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if (self::checkFunctionLikeTypeMatches(
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$statements_analyzer,
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$codebase,
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$cased_method_id,
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$method_id,
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$self_fq_class_name,
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$static_fq_class_name,
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$function_call_location,
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$function_param,
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$allow_named_args,
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$arg_value_type,
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$argument_offset,
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$unpacked_argument_offset,
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$arg,
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$context,
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$class_generic_params,
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$template_result,
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$specialize_taint,
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$in_call_map
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) === false) {
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return false;
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}
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return null;
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}
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/**
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* @param array<string, array<string, Type\Union>> $class_generic_params
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* @return false|null
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*/
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private static function checkFunctionLikeTypeMatches(
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StatementsAnalyzer $statements_analyzer,
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Codebase $codebase,
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?string $cased_method_id,
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?MethodIdentifier $method_id,
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?string $self_fq_class_name,
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?string $static_fq_class_name,
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CodeLocation $function_call_location,
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FunctionLikeParameter $function_param,
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bool $allow_named_args,
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Type\Union $arg_type,
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int $argument_offset,
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int $unpacked_argument_offset,
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PhpParser\Node\Arg $arg,
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Context $context,
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?array $class_generic_params,
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?TemplateResult $template_result,
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bool $specialize_taint,
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bool $in_call_map
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): ?bool {
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if (!$function_param->type) {
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if (!$codebase->infer_types_from_usage && !$statements_analyzer->data_flow_graph) {
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return null;
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}
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$param_type = Type::getMixed();
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} else {
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$param_type = clone $function_param->type;
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}
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$bindable_template_params = [];
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if ($template_result) {
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$bindable_template_params = $param_type->getTemplateTypes();
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}
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if ($class_generic_params) {
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$empty_generic_params = [];
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$empty_template_result = new TemplateResult($class_generic_params, $empty_generic_params);
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$arg_value_type = $statements_analyzer->node_data->getType($arg->value);
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$param_type = UnionTemplateHandler::replaceTemplateTypesWithStandins(
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$param_type,
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$empty_template_result,
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$codebase,
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$statements_analyzer,
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$arg_value_type,
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$argument_offset,
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$context->self ?: 'fn-' . $context->calling_function_id
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);
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$arg_type = UnionTemplateHandler::replaceTemplateTypesWithStandins(
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$arg_type,
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$empty_template_result,
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$codebase,
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$statements_analyzer,
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$arg_value_type,
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$argument_offset,
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$context->self ?: 'fn-' . $context->calling_function_id
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);
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}
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if ($template_result && $template_result->template_types) {
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$arg_type_param = $arg_type;
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if ($arg->unpack) {
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$arg_type_param = null;
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foreach ($arg_type->getAtomicTypes() as $arg_atomic_type) {
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if ($arg_atomic_type instanceof Type\Atomic\TArray
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|| $arg_atomic_type instanceof Type\Atomic\TList
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|| $arg_atomic_type instanceof Type\Atomic\TKeyedArray
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) {
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if ($arg_atomic_type instanceof Type\Atomic\TKeyedArray) {
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$arg_type_param = $arg_atomic_type->getGenericValueType();
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} elseif ($arg_atomic_type instanceof Type\Atomic\TList) {
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$arg_type_param = $arg_atomic_type->type_param;
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} else {
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$arg_type_param = $arg_atomic_type->type_params[1];
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}
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} elseif ($arg_atomic_type instanceof Type\Atomic\TIterable) {
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$arg_type_param = $arg_atomic_type->type_params[1];
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} elseif ($arg_atomic_type instanceof Type\Atomic\TNamedObject) {
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||
ForeachAnalyzer::getKeyValueParamsForTraversableObject(
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||
$arg_atomic_type,
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$codebase,
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||
$key_type,
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$arg_type_param
|
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);
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}
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}
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if (!$arg_type_param) {
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$arg_type_param = Type::getMixed();
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$arg_type_param->parent_nodes = $arg_type->parent_nodes;
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}
|
||
}
|
||
|
||
$param_type = UnionTemplateHandler::replaceTemplateTypesWithStandins(
|
||
$param_type,
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||
$template_result,
|
||
$codebase,
|
||
$statements_analyzer,
|
||
$arg_type_param,
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||
$argument_offset,
|
||
$context->self,
|
||
$context->calling_method_id ?: $context->calling_function_id
|
||
);
|
||
|
||
foreach ($bindable_template_params as $template_type) {
|
||
if (!isset(
|
||
$template_result->upper_bounds
|
||
[$template_type->param_name]
|
||
[$template_type->defining_class]
|
||
)) {
|
||
if (isset(
|
||
$template_result->lower_bounds
|
||
[$template_type->param_name]
|
||
[$template_type->defining_class]
|
||
)) {
|
||
$template_result->upper_bounds[$template_type->param_name][$template_type->defining_class]
|
||
= new TemplateBound(
|
||
clone $template_result->lower_bounds
|
||
[$template_type->param_name]
|
||
[$template_type->defining_class]->type
|
||
);
|
||
} else {
|
||
$template_result->upper_bounds[$template_type->param_name][$template_type->defining_class]
|
||
= new TemplateBound(
|
||
clone $template_type->as
|
||
);
|
||
}
|
||
}
|
||
}
|
||
}
|
||
|
||
$parent_class = null;
|
||
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||
$classlike_storage = null;
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$static_classlike_storage = null;
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||
|
||
if ($self_fq_class_name) {
|
||
$classlike_storage = $codebase->classlike_storage_provider->get($self_fq_class_name);
|
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$parent_class = $classlike_storage->parent_class;
|
||
$static_classlike_storage = $classlike_storage;
|
||
|
||
if ($static_fq_class_name && $static_fq_class_name !== $self_fq_class_name) {
|
||
$static_classlike_storage = $codebase->classlike_storage_provider->get($static_fq_class_name);
|
||
}
|
||
}
|
||
|
||
$fleshed_out_type = \Psalm\Internal\Type\TypeExpander::expandUnion(
|
||
$codebase,
|
||
$param_type,
|
||
$classlike_storage ? $classlike_storage->name : null,
|
||
$static_classlike_storage ? $static_classlike_storage->name : null,
|
||
$parent_class,
|
||
true,
|
||
false,
|
||
$static_classlike_storage ? $static_classlike_storage->final : false
|
||
);
|
||
|
||
$fleshed_out_signature_type = $function_param->signature_type
|
||
? \Psalm\Internal\Type\TypeExpander::expandUnion(
|
||
$codebase,
|
||
$function_param->signature_type,
|
||
$classlike_storage ? $classlike_storage->name : null,
|
||
$static_classlike_storage ? $static_classlike_storage->name : null,
|
||
$parent_class
|
||
)
|
||
: null;
|
||
|
||
$unpacked_atomic_array = null;
|
||
|
||
if ($arg->unpack) {
|
||
if ($arg_type->hasMixed()) {
|
||
if (!$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)
|
||
) {
|
||
$codebase->analyzer->incrementMixedCount($statements_analyzer->getFilePath());
|
||
}
|
||
|
||
if (IssueBuffer::accepts(
|
||
new MixedArgument(
|
||
'Argument ' . ($argument_offset + 1) . ' of ' . $cased_method_id
|
||
. ' cannot be ' . $arg_type->getId() . ', expecting array',
|
||
new CodeLocation($statements_analyzer->getSource(), $arg->value),
|
||
$cased_method_id
|
||
),
|
||
$statements_analyzer->getSuppressedIssues()
|
||
)) {
|
||
// fall through
|
||
}
|
||
|
||
if ($cased_method_id) {
|
||
$arg_location = new CodeLocation($statements_analyzer->getSource(), $arg->value);
|
||
|
||
self::processTaintedness(
|
||
$statements_analyzer,
|
||
$cased_method_id,
|
||
$method_id,
|
||
$argument_offset,
|
||
$arg_location,
|
||
$function_call_location,
|
||
$function_param,
|
||
$arg_type,
|
||
$arg->value,
|
||
$context,
|
||
$specialize_taint
|
||
);
|
||
}
|
||
|
||
return null;
|
||
}
|
||
|
||
if ($arg_type->hasArray()) {
|
||
/**
|
||
* @psalm-suppress PossiblyUndefinedStringArrayOffset
|
||
* @var Type\Atomic\TArray|Type\Atomic\TList|Type\Atomic\TKeyedArray
|
||
*/
|
||
$unpacked_atomic_array = $arg_type->getAtomicTypes()['array'];
|
||
|
||
if ($unpacked_atomic_array instanceof Type\Atomic\TKeyedArray) {
|
||
if ($function_param->is_variadic) {
|
||
$arg_type = $unpacked_atomic_array->getGenericValueType();
|
||
} elseif ($codebase->php_major_version >= 8
|
||
&& $allow_named_args
|
||
&& isset($unpacked_atomic_array->properties[$function_param->name])
|
||
) {
|
||
$arg_type = clone $unpacked_atomic_array->properties[$function_param->name];
|
||
} elseif ($unpacked_atomic_array->is_list
|
||
&& isset($unpacked_atomic_array->properties[$unpacked_argument_offset])
|
||
) {
|
||
$arg_type = clone $unpacked_atomic_array->properties[$unpacked_argument_offset];
|
||
} else {
|
||
$arg_type = Type::getMixed();
|
||
}
|
||
} elseif ($unpacked_atomic_array instanceof Type\Atomic\TList) {
|
||
$arg_type = $unpacked_atomic_array->type_param;
|
||
} else {
|
||
$arg_type = $unpacked_atomic_array->type_params[1];
|
||
}
|
||
} else {
|
||
foreach ($arg_type->getAtomicTypes() as $atomic_type) {
|
||
if (!$atomic_type->isIterable($codebase)) {
|
||
if (IssueBuffer::accepts(
|
||
new InvalidArgument(
|
||
'Argument ' . ($argument_offset + 1) . ' of ' . $cased_method_id
|
||
. ' expects array, ' . $atomic_type->getId() . ' provided',
|
||
new CodeLocation($statements_analyzer->getSource(), $arg->value),
|
||
$cased_method_id
|
||
),
|
||
$statements_analyzer->getSuppressedIssues()
|
||
)) {
|
||
// fall through
|
||
}
|
||
|
||
continue;
|
||
}
|
||
}
|
||
|
||
return null;
|
||
}
|
||
}
|
||
|
||
if (self::verifyType(
|
||
$statements_analyzer,
|
||
$arg_type,
|
||
$fleshed_out_type,
|
||
$fleshed_out_signature_type,
|
||
$cased_method_id,
|
||
$method_id,
|
||
$argument_offset,
|
||
new CodeLocation($statements_analyzer->getSource(), $arg->value),
|
||
$arg->value,
|
||
$context,
|
||
$function_param,
|
||
$arg->unpack,
|
||
$unpacked_atomic_array,
|
||
$specialize_taint,
|
||
$in_call_map,
|
||
$function_call_location
|
||
) === false) {
|
||
return false;
|
||
}
|
||
|
||
return null;
|
||
}
|
||
|
||
/**
|
||
* @param Type\Atomic\TKeyedArray|Type\Atomic\TArray|Type\Atomic\TList $unpacked_atomic_array
|
||
* @return null|false
|
||
*/
|
||
public static function verifyType(
|
||
StatementsAnalyzer $statements_analyzer,
|
||
Type\Union $input_type,
|
||
Type\Union $param_type,
|
||
?Type\Union $signature_param_type,
|
||
?string $cased_method_id,
|
||
?MethodIdentifier $method_id,
|
||
int $argument_offset,
|
||
CodeLocation $arg_location,
|
||
PhpParser\Node\Expr $input_expr,
|
||
Context $context,
|
||
FunctionLikeParameter $function_param,
|
||
bool $unpack,
|
||
?Type\Atomic $unpacked_atomic_array,
|
||
bool $specialize_taint,
|
||
bool $in_call_map,
|
||
CodeLocation $function_call_location
|
||
): ?bool {
|
||
$codebase = $statements_analyzer->getCodebase();
|
||
|
||
if ($param_type->hasMixed()) {
|
||
if ($codebase->infer_types_from_usage
|
||
&& !$input_type->hasMixed()
|
||
&& !$param_type->from_docblock
|
||
&& !$param_type->had_template
|
||
&& $method_id
|
||
&& strpos($method_id->method_name, '__') !== 0
|
||
) {
|
||
$declaring_method_id = $codebase->methods->getDeclaringMethodId($method_id);
|
||
|
||
if ($declaring_method_id) {
|
||
$id_lc = strtolower((string) $declaring_method_id);
|
||
if (!isset($codebase->analyzer->possible_method_param_types[$id_lc][$argument_offset])) {
|
||
$codebase->analyzer->possible_method_param_types[$id_lc][$argument_offset]
|
||
= clone $input_type;
|
||
} else {
|
||
$codebase->analyzer->possible_method_param_types[$id_lc][$argument_offset]
|
||
= Type::combineUnionTypes(
|
||
$codebase->analyzer->possible_method_param_types[$id_lc][$argument_offset],
|
||
clone $input_type,
|
||
$codebase
|
||
);
|
||
}
|
||
}
|
||
}
|
||
|
||
if ($cased_method_id) {
|
||
self::processTaintedness(
|
||
$statements_analyzer,
|
||
$cased_method_id,
|
||
$method_id,
|
||
$argument_offset,
|
||
$arg_location,
|
||
$function_call_location,
|
||
$function_param,
|
||
$input_type,
|
||
$input_expr,
|
||
$context,
|
||
$specialize_taint
|
||
);
|
||
}
|
||
|
||
return null;
|
||
}
|
||
|
||
$method_identifier = $cased_method_id ? ' of ' . $cased_method_id : '';
|
||
|
||
if ($input_type->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)
|
||
) {
|
||
$codebase->analyzer->incrementMixedCount($statements_analyzer->getFilePath());
|
||
}
|
||
|
||
if (IssueBuffer::accepts(
|
||
new MixedArgument(
|
||
'Argument ' . ($argument_offset + 1) . $method_identifier
|
||
. ' cannot be ' . $input_type->getId() . ', expecting ' .
|
||
$param_type,
|
||
$arg_location,
|
||
$cased_method_id
|
||
),
|
||
$statements_analyzer->getSuppressedIssues()
|
||
)) {
|
||
// fall through
|
||
}
|
||
|
||
if ($input_type->isMixed()) {
|
||
if (!$function_param->by_ref
|
||
&& !($function_param->is_variadic xor $unpack)
|
||
&& $cased_method_id !== 'echo'
|
||
&& $cased_method_id !== 'print'
|
||
&& (!$in_call_map || $context->strict_types)
|
||
) {
|
||
self::coerceValueAfterGatekeeperArgument(
|
||
$statements_analyzer,
|
||
$input_type,
|
||
false,
|
||
$input_expr,
|
||
$param_type,
|
||
$signature_param_type,
|
||
$context,
|
||
$unpack,
|
||
$unpacked_atomic_array
|
||
);
|
||
}
|
||
}
|
||
|
||
if ($cased_method_id) {
|
||
$input_type = self::processTaintedness(
|
||
$statements_analyzer,
|
||
$cased_method_id,
|
||
$method_id,
|
||
$argument_offset,
|
||
$arg_location,
|
||
$function_call_location,
|
||
$function_param,
|
||
$input_type,
|
||
$input_expr,
|
||
$context,
|
||
$specialize_taint
|
||
);
|
||
}
|
||
|
||
if ($input_type->isMixed()) {
|
||
return null;
|
||
}
|
||
}
|
||
|
||
if ($input_type->isNever()) {
|
||
if (IssueBuffer::accepts(
|
||
new NoValue(
|
||
'This function or method call never returns output',
|
||
$arg_location
|
||
),
|
||
$statements_analyzer->getSuppressedIssues()
|
||
)) {
|
||
// fall through
|
||
}
|
||
|
||
return null;
|
||
}
|
||
|
||
if (!$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)
|
||
) {
|
||
$codebase->analyzer->incrementNonMixedCount($statements_analyzer->getFilePath());
|
||
}
|
||
|
||
if ($function_param->by_ref) {
|
||
$param_type->possibly_undefined = true;
|
||
}
|
||
|
||
if ($param_type->hasCallableType()
|
||
&& $param_type->isSingle()
|
||
&& $input_type->isSingleStringLiteral()
|
||
&& !\Psalm\Internal\Codebase\InternalCallMapHandler::inCallMap($input_type->getSingleStringLiteral()->value)
|
||
) {
|
||
foreach ($input_type->getAtomicTypes() as $key => $atomic_type) {
|
||
$candidate_callable = CallableTypeComparator::getCallableFromAtomic(
|
||
$codebase,
|
||
$atomic_type,
|
||
null,
|
||
$statements_analyzer
|
||
);
|
||
|
||
if ($candidate_callable) {
|
||
$input_type->removeType($key);
|
||
$input_type->addType($candidate_callable);
|
||
}
|
||
}
|
||
}
|
||
|
||
$union_comparison_results = new \Psalm\Internal\Type\Comparator\TypeComparisonResult();
|
||
|
||
$type_match_found = UnionTypeComparator::isContainedBy(
|
||
$codebase,
|
||
$input_type,
|
||
$param_type,
|
||
true,
|
||
true,
|
||
$union_comparison_results
|
||
);
|
||
|
||
$replace_input_type = false;
|
||
|
||
if ($union_comparison_results->replacement_union_type) {
|
||
$replace_input_type = true;
|
||
$input_type = $union_comparison_results->replacement_union_type;
|
||
}
|
||
|
||
if ($cased_method_id) {
|
||
$old_input_type = $input_type;
|
||
|
||
$input_type = self::processTaintedness(
|
||
$statements_analyzer,
|
||
$cased_method_id,
|
||
$method_id,
|
||
$argument_offset,
|
||
$arg_location,
|
||
$function_call_location,
|
||
$function_param,
|
||
$input_type,
|
||
$input_expr,
|
||
$context,
|
||
$specialize_taint
|
||
);
|
||
|
||
if ($old_input_type !== $input_type) {
|
||
$replace_input_type = true;
|
||
}
|
||
}
|
||
|
||
if ($type_match_found
|
||
&& $param_type->hasCallableType()
|
||
) {
|
||
$potential_method_ids = [];
|
||
|
||
foreach ($input_type->getAtomicTypes() as $input_type_part) {
|
||
if ($input_type_part instanceof Type\Atomic\TKeyedArray) {
|
||
$potential_method_id = CallableTypeComparator::getCallableMethodIdFromTKeyedArray(
|
||
$input_type_part,
|
||
$codebase,
|
||
$context->calling_method_id,
|
||
$statements_analyzer->getFilePath()
|
||
);
|
||
|
||
if ($potential_method_id && $potential_method_id !== 'not-callable') {
|
||
$potential_method_ids[] = $potential_method_id;
|
||
}
|
||
} elseif ($input_type_part instanceof Type\Atomic\TLiteralString
|
||
&& strpos($input_type_part->value, '::')
|
||
) {
|
||
$parts = explode('::', $input_type_part->value);
|
||
$potential_method_ids[] = new \Psalm\Internal\MethodIdentifier(
|
||
$parts[0],
|
||
strtolower($parts[1])
|
||
);
|
||
}
|
||
}
|
||
|
||
foreach ($potential_method_ids as $potential_method_id) {
|
||
$codebase->methods->methodExists(
|
||
$potential_method_id,
|
||
$context->calling_method_id,
|
||
null,
|
||
$statements_analyzer,
|
||
$statements_analyzer->getFilePath()
|
||
);
|
||
}
|
||
}
|
||
|
||
if ($context->strict_types
|
||
&& !$input_type->hasArray()
|
||
&& !$param_type->from_docblock
|
||
&& $cased_method_id !== 'echo'
|
||
&& $cased_method_id !== 'print'
|
||
&& $cased_method_id !== 'sprintf'
|
||
) {
|
||
$union_comparison_results->scalar_type_match_found = false;
|
||
|
||
if ($union_comparison_results->to_string_cast) {
|
||
$union_comparison_results->to_string_cast = false;
|
||
$type_match_found = false;
|
||
}
|
||
}
|
||
|
||
if ($union_comparison_results->type_coerced && !$input_type->hasMixed()) {
|
||
if ($union_comparison_results->type_coerced_from_mixed) {
|
||
if (IssueBuffer::accepts(
|
||
new MixedArgumentTypeCoercion(
|
||
'Argument ' . ($argument_offset + 1) . $method_identifier . ' expects ' . $param_type->getId() .
|
||
', parent type ' . $input_type->getId() . ' provided',
|
||
$arg_location,
|
||
$cased_method_id
|
||
),
|
||
$statements_analyzer->getSuppressedIssues()
|
||
)) {
|
||
// keep soldiering on
|
||
}
|
||
} else {
|
||
if (IssueBuffer::accepts(
|
||
new ArgumentTypeCoercion(
|
||
'Argument ' . ($argument_offset + 1) . $method_identifier . ' expects ' . $param_type->getId() .
|
||
', parent type ' . $input_type->getId() . ' provided',
|
||
$arg_location,
|
||
$cased_method_id
|
||
),
|
||
$statements_analyzer->getSuppressedIssues()
|
||
)) {
|
||
// keep soldiering on
|
||
}
|
||
}
|
||
}
|
||
|
||
if ($union_comparison_results->to_string_cast && $cased_method_id !== 'echo' && $cased_method_id !== 'print') {
|
||
if (IssueBuffer::accepts(
|
||
new ImplicitToStringCast(
|
||
'Argument ' . ($argument_offset + 1) . $method_identifier . ' expects ' .
|
||
$param_type->getId() . ', ' . $input_type->getId() . ' provided with a __toString method',
|
||
$arg_location
|
||
),
|
||
$statements_analyzer->getSuppressedIssues()
|
||
)) {
|
||
// fall through
|
||
}
|
||
}
|
||
|
||
if (!$type_match_found && !$union_comparison_results->type_coerced) {
|
||
$types_can_be_identical = UnionTypeComparator::canBeContainedBy(
|
||
$codebase,
|
||
$input_type,
|
||
$param_type,
|
||
true,
|
||
true
|
||
);
|
||
|
||
if ($union_comparison_results->scalar_type_match_found) {
|
||
if ($cased_method_id !== 'echo' && $cased_method_id !== 'print') {
|
||
if (IssueBuffer::accepts(
|
||
new InvalidScalarArgument(
|
||
'Argument ' . ($argument_offset + 1) . $method_identifier . ' expects ' .
|
||
$param_type->getId() . ', ' . $input_type->getId() . ' provided',
|
||
$arg_location,
|
||
$cased_method_id
|
||
),
|
||
$statements_analyzer->getSuppressedIssues()
|
||
)) {
|
||
// fall through
|
||
}
|
||
}
|
||
} elseif ($types_can_be_identical) {
|
||
if (IssueBuffer::accepts(
|
||
new PossiblyInvalidArgument(
|
||
'Argument ' . ($argument_offset + 1) . $method_identifier . ' expects ' . $param_type->getId() .
|
||
', possibly different type ' . $input_type->getId() . ' provided',
|
||
$arg_location,
|
||
$cased_method_id
|
||
),
|
||
$statements_analyzer->getSuppressedIssues()
|
||
)) {
|
||
// fall through
|
||
}
|
||
} else {
|
||
if (IssueBuffer::accepts(
|
||
new InvalidArgument(
|
||
'Argument ' . ($argument_offset + 1) . $method_identifier . ' expects ' . $param_type->getId() .
|
||
', ' . $input_type->getId() . ' provided',
|
||
$arg_location,
|
||
$cased_method_id
|
||
),
|
||
$statements_analyzer->getSuppressedIssues()
|
||
)) {
|
||
// fall through
|
||
}
|
||
}
|
||
|
||
return null;
|
||
}
|
||
|
||
if ($input_expr instanceof PhpParser\Node\Scalar\String_
|
||
|| $input_expr instanceof PhpParser\Node\Expr\Array_
|
||
|| $input_expr instanceof PhpParser\Node\Expr\BinaryOp\Concat
|
||
) {
|
||
foreach ($param_type->getAtomicTypes() as $param_type_part) {
|
||
if ($param_type_part instanceof TClassString
|
||
&& $input_expr instanceof PhpParser\Node\Scalar\String_
|
||
&& $param_type->isSingle()
|
||
) {
|
||
if (ClassLikeAnalyzer::checkFullyQualifiedClassLikeName(
|
||
$statements_analyzer,
|
||
$input_expr->value,
|
||
$arg_location,
|
||
$context->self,
|
||
$context->calling_method_id,
|
||
$statements_analyzer->getSuppressedIssues()
|
||
) === false
|
||
) {
|
||
return null;
|
||
}
|
||
} elseif ($param_type_part instanceof TArray
|
||
&& $input_expr instanceof PhpParser\Node\Expr\Array_
|
||
) {
|
||
foreach ($param_type_part->type_params[1]->getAtomicTypes() as $param_array_type_part) {
|
||
if ($param_array_type_part instanceof TClassString) {
|
||
foreach ($input_expr->items as $item) {
|
||
if ($item && $item->value instanceof PhpParser\Node\Scalar\String_) {
|
||
if (ClassLikeAnalyzer::checkFullyQualifiedClassLikeName(
|
||
$statements_analyzer,
|
||
$item->value->value,
|
||
$arg_location,
|
||
$context->self,
|
||
$context->calling_method_id,
|
||
$statements_analyzer->getSuppressedIssues()
|
||
) === false
|
||
) {
|
||
return null;
|
||
}
|
||
}
|
||
}
|
||
}
|
||
}
|
||
} elseif ($param_type_part instanceof TCallable) {
|
||
$can_be_callable_like_array = false;
|
||
if ($param_type->hasArray()) {
|
||
/**
|
||
* @psalm-suppress PossiblyUndefinedStringArrayOffset
|
||
*/
|
||
$param_array_type = $param_type->getAtomicTypes()['array'];
|
||
|
||
$row_type = null;
|
||
if ($param_array_type instanceof TList) {
|
||
$row_type = $param_array_type->type_param;
|
||
} elseif ($param_array_type instanceof TArray) {
|
||
$row_type = $param_array_type->type_params[1];
|
||
} elseif ($param_array_type instanceof Type\Atomic\TKeyedArray) {
|
||
$row_type = $param_array_type->getGenericArrayType()->type_params[1];
|
||
}
|
||
|
||
if ($row_type &&
|
||
($row_type->hasMixed() || $row_type->hasString())
|
||
) {
|
||
$can_be_callable_like_array = true;
|
||
}
|
||
}
|
||
|
||
if (!$can_be_callable_like_array) {
|
||
$function_ids = CallAnalyzer::getFunctionIdsFromCallableArg(
|
||
$statements_analyzer,
|
||
$input_expr
|
||
);
|
||
|
||
foreach ($function_ids as $function_id) {
|
||
if (strpos($function_id, '::') !== false) {
|
||
if ($function_id[0] === '$') {
|
||
$function_id = \substr($function_id, 1);
|
||
}
|
||
|
||
$function_id_parts = explode('&', $function_id);
|
||
|
||
$non_existent_method_ids = [];
|
||
$has_valid_method = false;
|
||
|
||
foreach ($function_id_parts as $function_id_part) {
|
||
[$callable_fq_class_name, $method_name] = explode('::', $function_id_part);
|
||
|
||
switch ($callable_fq_class_name) {
|
||
case 'self':
|
||
case 'static':
|
||
case 'parent':
|
||
$container_class = $statements_analyzer->getFQCLN();
|
||
|
||
if ($callable_fq_class_name === 'parent') {
|
||
$container_class = $statements_analyzer->getParentFQCLN();
|
||
}
|
||
|
||
if (!$container_class) {
|
||
continue 2;
|
||
}
|
||
|
||
$callable_fq_class_name = $container_class;
|
||
}
|
||
|
||
if (ClassLikeAnalyzer::checkFullyQualifiedClassLikeName(
|
||
$statements_analyzer,
|
||
$callable_fq_class_name,
|
||
$arg_location,
|
||
$context->self,
|
||
$context->calling_method_id,
|
||
$statements_analyzer->getSuppressedIssues()
|
||
) === false
|
||
) {
|
||
return null;
|
||
}
|
||
|
||
$function_id_part = new \Psalm\Internal\MethodIdentifier(
|
||
$callable_fq_class_name,
|
||
strtolower($method_name)
|
||
);
|
||
|
||
$call_method_id = new \Psalm\Internal\MethodIdentifier(
|
||
$callable_fq_class_name,
|
||
'__call'
|
||
);
|
||
|
||
if (!$codebase->classOrInterfaceExists($callable_fq_class_name)) {
|
||
return null;
|
||
}
|
||
|
||
if (!$codebase->methods->methodExists($function_id_part)
|
||
&& !$codebase->methods->methodExists($call_method_id)
|
||
) {
|
||
$non_existent_method_ids[] = $function_id_part;
|
||
} else {
|
||
$has_valid_method = true;
|
||
}
|
||
}
|
||
|
||
if (!$has_valid_method && !$param_type->hasString() && !$param_type->hasArray()) {
|
||
if (MethodAnalyzer::checkMethodExists(
|
||
$codebase,
|
||
$non_existent_method_ids[0],
|
||
$arg_location,
|
||
$statements_analyzer->getSuppressedIssues()
|
||
) === false
|
||
) {
|
||
return null;
|
||
}
|
||
}
|
||
} else {
|
||
if (!$param_type->hasString()
|
||
&& !$param_type->hasArray()
|
||
&& CallAnalyzer::checkFunctionExists(
|
||
$statements_analyzer,
|
||
$function_id,
|
||
$arg_location,
|
||
false
|
||
) === false
|
||
) {
|
||
return null;
|
||
}
|
||
}
|
||
}
|
||
}
|
||
}
|
||
}
|
||
}
|
||
|
||
if (!$param_type->isNullable() && $cased_method_id !== 'echo' && $cased_method_id !== 'print') {
|
||
if ($input_type->isNull()) {
|
||
if (IssueBuffer::accepts(
|
||
new NullArgument(
|
||
'Argument ' . ($argument_offset + 1) . $method_identifier . ' cannot be null, ' .
|
||
'null value provided to parameter with type ' . $param_type->getId(),
|
||
$arg_location,
|
||
$cased_method_id
|
||
),
|
||
$statements_analyzer->getSuppressedIssues()
|
||
)) {
|
||
// fall through
|
||
}
|
||
|
||
return null;
|
||
}
|
||
|
||
if ($input_type->isNullable() && !$input_type->ignore_nullable_issues) {
|
||
if (IssueBuffer::accepts(
|
||
new PossiblyNullArgument(
|
||
'Argument ' . ($argument_offset + 1) . $method_identifier . ' cannot be null, possibly ' .
|
||
'null value provided',
|
||
$arg_location,
|
||
$cased_method_id
|
||
),
|
||
$statements_analyzer->getSuppressedIssues()
|
||
)) {
|
||
// fall through
|
||
}
|
||
}
|
||
}
|
||
|
||
if ($input_type->isFalsable()
|
||
&& !$param_type->hasBool()
|
||
&& !$param_type->hasScalar()
|
||
&& !$input_type->ignore_falsable_issues
|
||
&& $cased_method_id !== 'echo'
|
||
) {
|
||
if (IssueBuffer::accepts(
|
||
new PossiblyFalseArgument(
|
||
'Argument ' . ($argument_offset + 1) . $method_identifier . ' cannot be false, possibly ' .
|
||
'false value provided',
|
||
$arg_location,
|
||
$cased_method_id
|
||
),
|
||
$statements_analyzer->getSuppressedIssues()
|
||
)) {
|
||
// fall through
|
||
}
|
||
}
|
||
|
||
if (($type_match_found || $input_type->hasMixed())
|
||
&& !$function_param->by_ref
|
||
&& !($function_param->is_variadic xor $unpack)
|
||
&& $cased_method_id !== 'echo'
|
||
&& $cased_method_id !== 'print'
|
||
&& (!$in_call_map || $context->strict_types)
|
||
) {
|
||
self::coerceValueAfterGatekeeperArgument(
|
||
$statements_analyzer,
|
||
$input_type,
|
||
$replace_input_type,
|
||
$input_expr,
|
||
$param_type,
|
||
$signature_param_type,
|
||
$context,
|
||
$unpack,
|
||
$unpacked_atomic_array
|
||
);
|
||
}
|
||
|
||
return null;
|
||
}
|
||
|
||
/**
|
||
* @param Type\Atomic\TKeyedArray|Type\Atomic\TArray|Type\Atomic\TList $unpacked_atomic_array
|
||
*/
|
||
private static function coerceValueAfterGatekeeperArgument(
|
||
StatementsAnalyzer $statements_analyzer,
|
||
Type\Union $input_type,
|
||
bool $input_type_changed,
|
||
PhpParser\Node\Expr $input_expr,
|
||
Type\Union $param_type,
|
||
?Type\Union $signature_param_type,
|
||
Context $context,
|
||
bool $unpack,
|
||
?Type\Atomic $unpacked_atomic_array
|
||
) : void {
|
||
if ($param_type->hasMixed()) {
|
||
return;
|
||
}
|
||
|
||
if (!$input_type_changed && $param_type->from_docblock && !$input_type->hasMixed()) {
|
||
$input_type = clone $input_type;
|
||
|
||
foreach ($param_type->getAtomicTypes() as $param_atomic_type) {
|
||
if ($param_atomic_type instanceof Type\Atomic\TGenericObject) {
|
||
foreach ($input_type->getAtomicTypes() as $input_atomic_type) {
|
||
if ($input_atomic_type instanceof Type\Atomic\TGenericObject
|
||
&& $input_atomic_type->value === $param_atomic_type->value
|
||
) {
|
||
foreach ($input_atomic_type->type_params as $i => $type_param) {
|
||
if ($type_param->isEmpty() && isset($param_atomic_type->type_params[$i])) {
|
||
$input_type_changed = true;
|
||
|
||
/** @psalm-suppress PropertyTypeCoercion */
|
||
$input_atomic_type->type_params[$i] = clone $param_atomic_type->type_params[$i];
|
||
}
|
||
}
|
||
}
|
||
}
|
||
}
|
||
}
|
||
|
||
if (!$input_type_changed) {
|
||
return;
|
||
}
|
||
}
|
||
|
||
$var_id = ExpressionIdentifier::getVarId(
|
||
$input_expr,
|
||
$statements_analyzer->getFQCLN(),
|
||
$statements_analyzer
|
||
);
|
||
|
||
if ($var_id) {
|
||
$was_cloned = false;
|
||
|
||
if ($input_type->isNullable() && !$param_type->isNullable()) {
|
||
$input_type = clone $input_type;
|
||
$was_cloned = true;
|
||
$input_type->removeType('null');
|
||
}
|
||
|
||
if ($input_type->getId() === $param_type->getId()) {
|
||
if (!$was_cloned) {
|
||
$was_cloned = true;
|
||
$input_type = clone $input_type;
|
||
}
|
||
|
||
$input_type->from_docblock = false;
|
||
|
||
foreach ($input_type->getAtomicTypes() as $atomic_type) {
|
||
$atomic_type->from_docblock = false;
|
||
}
|
||
} elseif ($input_type->hasMixed() && $signature_param_type) {
|
||
$was_cloned = true;
|
||
$parent_nodes = $input_type->parent_nodes;
|
||
$by_ref = $input_type->by_ref;
|
||
$input_type = clone $signature_param_type;
|
||
|
||
if ($input_type->isNullable()) {
|
||
$input_type->ignore_nullable_issues = true;
|
||
}
|
||
|
||
$input_type->parent_nodes = $parent_nodes;
|
||
$input_type->by_ref = $by_ref;
|
||
}
|
||
|
||
if ($context->inside_conditional && !isset($context->assigned_var_ids[$var_id])) {
|
||
$context->assigned_var_ids[$var_id] = 0;
|
||
}
|
||
|
||
if ($was_cloned) {
|
||
$context->removeVarFromConflictingClauses($var_id, null, $statements_analyzer);
|
||
}
|
||
|
||
if ($unpack) {
|
||
if ($unpacked_atomic_array instanceof Type\Atomic\TList) {
|
||
$unpacked_atomic_array = clone $unpacked_atomic_array;
|
||
$unpacked_atomic_array->type_param = $input_type;
|
||
|
||
$context->vars_in_scope[$var_id] = new Type\Union([$unpacked_atomic_array]);
|
||
} elseif ($unpacked_atomic_array instanceof Type\Atomic\TArray) {
|
||
$unpacked_atomic_array = clone $unpacked_atomic_array;
|
||
$unpacked_atomic_array->type_params[1] = $input_type;
|
||
|
||
$context->vars_in_scope[$var_id] = new Type\Union([$unpacked_atomic_array]);
|
||
} elseif ($unpacked_atomic_array instanceof Type\Atomic\TKeyedArray
|
||
&& $unpacked_atomic_array->is_list
|
||
) {
|
||
$unpacked_atomic_array = $unpacked_atomic_array->getList();
|
||
$unpacked_atomic_array->type_param = $input_type;
|
||
|
||
$context->vars_in_scope[$var_id] = new Type\Union([$unpacked_atomic_array]);
|
||
} else {
|
||
$context->vars_in_scope[$var_id] = new Type\Union([
|
||
new TArray([
|
||
Type::getInt(),
|
||
$input_type
|
||
]),
|
||
]);
|
||
}
|
||
} else {
|
||
$context->vars_in_scope[$var_id] = $input_type;
|
||
}
|
||
}
|
||
}
|
||
|
||
private static function processTaintedness(
|
||
StatementsAnalyzer $statements_analyzer,
|
||
string $cased_method_id,
|
||
?MethodIdentifier $method_id,
|
||
int $argument_offset,
|
||
CodeLocation $arg_location,
|
||
CodeLocation $function_call_location,
|
||
FunctionLikeParameter $function_param,
|
||
Type\Union $input_type,
|
||
PhpParser\Node\Expr $expr,
|
||
Context $context,
|
||
bool $specialize_taint
|
||
) : Type\Union {
|
||
$codebase = $statements_analyzer->getCodebase();
|
||
|
||
if (!$statements_analyzer->data_flow_graph
|
||
|| ($statements_analyzer->data_flow_graph instanceof TaintFlowGraph
|
||
&& \in_array('TaintedInput', $statements_analyzer->getSuppressedIssues()))
|
||
) {
|
||
return $input_type;
|
||
}
|
||
|
||
// literal data can’t be tainted
|
||
if ($statements_analyzer->data_flow_graph instanceof TaintFlowGraph
|
||
&& $input_type->isSingle()
|
||
&& $input_type->hasLiteralValue()
|
||
) {
|
||
return $input_type;
|
||
}
|
||
|
||
if ($function_param->type && $function_param->type->isString() && !$input_type->isString()) {
|
||
$cast_type = CastAnalyzer::castStringAttempt(
|
||
$statements_analyzer,
|
||
$context,
|
||
$input_type,
|
||
$expr,
|
||
false
|
||
);
|
||
|
||
$input_type = clone $input_type;
|
||
$input_type->parent_nodes += $cast_type->parent_nodes;
|
||
}
|
||
|
||
if ($specialize_taint) {
|
||
$method_node = DataFlowNode::getForMethodArgument(
|
||
$cased_method_id,
|
||
$cased_method_id,
|
||
$argument_offset,
|
||
$statements_analyzer->data_flow_graph instanceof TaintFlowGraph
|
||
? $function_param->location
|
||
: null,
|
||
$function_call_location
|
||
);
|
||
} else {
|
||
$method_node = DataFlowNode::getForMethodArgument(
|
||
$cased_method_id,
|
||
$cased_method_id,
|
||
$argument_offset,
|
||
$statements_analyzer->data_flow_graph instanceof TaintFlowGraph
|
||
? $function_param->location
|
||
: null
|
||
);
|
||
|
||
if ($statements_analyzer->data_flow_graph instanceof TaintFlowGraph
|
||
&& $method_id
|
||
&& $method_id->method_name !== '__construct'
|
||
) {
|
||
$fq_classlike_name = $method_id->fq_class_name;
|
||
$method_name = $method_id->method_name;
|
||
$cased_method_name = explode('::', $cased_method_id)[1];
|
||
|
||
$class_storage = $codebase->classlike_storage_provider->get($fq_classlike_name);
|
||
|
||
foreach ($class_storage->dependent_classlikes as $dependent_classlike_lc => $_) {
|
||
$dependent_classlike_storage = $codebase->classlike_storage_provider->get(
|
||
$dependent_classlike_lc
|
||
);
|
||
$new_sink = DataFlowNode::getForMethodArgument(
|
||
$dependent_classlike_lc . '::' . $method_name,
|
||
$dependent_classlike_storage->name . '::' . $cased_method_name,
|
||
$argument_offset,
|
||
$arg_location,
|
||
null
|
||
);
|
||
|
||
$statements_analyzer->data_flow_graph->addNode($new_sink);
|
||
$statements_analyzer->data_flow_graph->addPath($method_node, $new_sink, 'arg');
|
||
}
|
||
}
|
||
}
|
||
|
||
if ($method_id && $statements_analyzer->data_flow_graph instanceof TaintFlowGraph) {
|
||
$declaring_method_id = $codebase->methods->getDeclaringMethodId($method_id);
|
||
|
||
if ($declaring_method_id && (string) $declaring_method_id !== (string) $method_id) {
|
||
$new_sink = DataFlowNode::getForMethodArgument(
|
||
(string) $declaring_method_id,
|
||
$codebase->methods->getCasedMethodId($declaring_method_id),
|
||
$argument_offset,
|
||
$arg_location,
|
||
null
|
||
);
|
||
|
||
$statements_analyzer->data_flow_graph->addNode($new_sink);
|
||
$statements_analyzer->data_flow_graph->addPath($method_node, $new_sink, 'arg');
|
||
}
|
||
}
|
||
|
||
$statements_analyzer->data_flow_graph->addNode($method_node);
|
||
|
||
$argument_value_node = DataFlowNode::getForAssignment(
|
||
'call to ' . $cased_method_id,
|
||
$arg_location
|
||
);
|
||
|
||
$statements_analyzer->data_flow_graph->addNode($argument_value_node);
|
||
|
||
$statements_analyzer->data_flow_graph->addPath($argument_value_node, $method_node, 'arg');
|
||
|
||
foreach ($input_type->parent_nodes as $parent_node) {
|
||
$statements_analyzer->data_flow_graph->addNode($method_node);
|
||
$statements_analyzer->data_flow_graph->addPath($parent_node, $argument_value_node, 'arg');
|
||
}
|
||
|
||
if ($function_param->assert_untainted) {
|
||
$input_type = clone $input_type;
|
||
$input_type->parent_nodes = [];
|
||
}
|
||
|
||
return $input_type;
|
||
}
|
||
}
|