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54 lines
2.2 KiB
C++
54 lines
2.2 KiB
C++
// Copyright 2015 The Chromium Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE file.
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#ifndef MOJO_PUBLIC_CPP_BINDINGS_LIB_VALIDATION_UTIL_H_
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#define MOJO_PUBLIC_CPP_BINDINGS_LIB_VALIDATION_UTIL_H_
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#include <stdint.h>
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#include "mojo/public/cpp/bindings/lib/bounds_checker.h"
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#include "mojo/public/cpp/bindings/message.h"
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namespace mojo {
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namespace internal {
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// Checks whether decoding the pointer will overflow and produce a pointer
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// smaller than |offset|.
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bool ValidateEncodedPointer(const uint64_t* offset);
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// Validates that |data| contains a valid struct header, in terms of alignment
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// and size (i.e., the |num_bytes| field of the header is sufficient for storing
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// the header itself). Besides, it checks that the memory range
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// [data, data + num_bytes) is not marked as occupied by other objects in
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// |bounds_checker|. On success, the memory range is marked as occupied.
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// Note: Does not verify |version| or that |num_bytes| is correct for the
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// claimed version.
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bool ValidateStructHeaderAndClaimMemory(const void* data,
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BoundsChecker* bounds_checker);
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// Validates that the message is a request which doesn't expect a response.
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bool ValidateMessageIsRequestWithoutResponse(const Message* message);
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// Validates that the message is a request expecting a response.
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bool ValidateMessageIsRequestExpectingResponse(const Message* message);
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// Validates that the message is a response.
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bool ValidateMessageIsResponse(const Message* message);
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// Validates that the message payload is a valid struct of type ParamsType.
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template <typename ParamsType>
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bool ValidateMessagePayload(const Message* message) {
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BoundsChecker bounds_checker(message->payload(), message->payload_num_bytes(),
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message->handles()->size());
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return ParamsType::Validate(message->payload(), &bounds_checker);
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}
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// The following methods validate control messages defined in
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// interface_control_messages.mojom.
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bool ValidateControlRequest(const Message* message);
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bool ValidateControlResponse(const Message* message);
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} // namespace internal
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} // namespace mojo
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#endif // MOJO_PUBLIC_CPP_BINDINGS_LIB_VALIDATION_UTIL_H_
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