64 lines
2.1 KiB
C
64 lines
2.1 KiB
C
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// Copyright 2019 The Chromium Authors
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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 TESTING_LIBFUZZER_FUZZERS_MACH_MACH_MESSAGE_CONVERTER_H_
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#define TESTING_LIBFUZZER_FUZZERS_MACH_MACH_MESSAGE_CONVERTER_H_
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#include <mach/mach.h>
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#include <stdint.h>
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#include <memory>
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#include <vector>
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#include "base/mac/scoped_mach_port.h"
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#include "base/memory/raw_ptr.h"
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#include "testing/libfuzzer/fuzzers/mach/mach_message.pb.h"
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namespace mach_fuzzer {
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// Container for a Mach port right that will be sent in a message.
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struct SendablePort {
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mach_port_t name = MACH_PORT_NULL;
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mach_msg_type_name_t disposition = 0;
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MachPortType proto_type = static_cast<MachPortType>(-1);
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base::mac::ScopedMachSendRight send_right;
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base::mac::ScopedMachReceiveRight receive_right;
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};
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// Holds the buffer allocation and port references for a message to be sent.
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struct SendableMessage {
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// The message buffer.
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std::unique_ptr<uint8_t[]> buffer;
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// The |ports| are also encoded into the body of the message, but they are
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// accessible here to allow for further manipulation.
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std::vector<SendablePort> ports;
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// Pointer to the header of the message stored in |buffer|.
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raw_ptr<mach_msg_header_t> header = nullptr;
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};
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// Converts the given protobuf message into a live Mach message, including port
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// rights.
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SendableMessage ConvertProtoToMachMessage(const MachMessage& proto);
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// Takes the protobuf |proto|, converts it to a Mach message using
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// ConvertProtoToMachMessage(), and then sends it via |local_port|. The port
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// named by |local_port| must have a send right, which will be copied.
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struct SendResult {
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// The return value from mach_msg_send().
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kern_return_t kr;
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// The message that was sent, including its descriptors. This allows callers
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// to control the lifetimes of any Mach rights after the message has been
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// sent.
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SendableMessage message;
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};
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SendResult SendMessage(mach_port_t local_port, const MachMessage& proto);
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} // namespace mach_fuzzer
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#endif // TESTING_LIBFUZZER_FUZZERS_MACH_MACH_MESSAGE_CONVERTER_H_
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