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// Copyright 2015 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef IPC_ATTACHMENT_BROKER_PRIVILEGED_MAC_H_
#define IPC_ATTACHMENT_BROKER_PRIVILEGED_MAC_H_
#include <mach/mach.h>
#include "base/gtest_prod_util.h"
#include "base/mac/scoped_mach_port.h"
#include "base/process/port_provider_mac.h"
#include "ipc/attachment_broker_privileged.h"
#include "ipc/ipc_export.h"
#include "ipc/mach_port_attachment_mac.h"
namespace IPC {
// This class is a concrete subclass of AttachmentBrokerPrivileged for the
// OSX platform.
class IPC_EXPORT AttachmentBrokerPrivilegedMac
: public AttachmentBrokerPrivileged {
public:
AttachmentBrokerPrivilegedMac();
~AttachmentBrokerPrivilegedMac() override;
// The port provider must live as long as the AttachmentBrokerPrivilegedMac. A
// port provider must be set before any attachment brokering occurs.
void SetPortProvider(base::PortProvider* port_provider);
// IPC::AttachmentBroker overrides.
bool SendAttachmentToProcess(const BrokerableAttachment* attachment,
base::ProcessId destination_process) override;
// IPC::Listener overrides.
bool OnMessageReceived(const Message& message) override;
private:
FRIEND_TEST_ALL_PREFIXES(AttachmentBrokerPrivilegedMacMultiProcessTest,
InsertRight);
FRIEND_TEST_ALL_PREFIXES(AttachmentBrokerPrivilegedMacMultiProcessTest,
InsertSameRightTwice);
FRIEND_TEST_ALL_PREFIXES(AttachmentBrokerPrivilegedMacMultiProcessTest,
InsertTwoRights);
using MachPortWireFormat = internal::MachPortAttachmentMac::WireFormat;
// IPC message handlers.
void OnDuplicateMachPort(const Message& message);
// Duplicates the Mach port referenced from |wire_format| from
// |source_process| into |wire_format|'s destination process.
MachPortWireFormat DuplicateMachPort(const MachPortWireFormat& wire_format,
base::ProcessId source_process);
// Returns the name of the inserted right of a port, which contains a queued
// message with |port_to_insert|. Returns |MACH_PORT_NULL| on failure.
// |task_port| must be for a different task, and |port_to_insert| is a port
// right in the current task.
mach_port_name_t InsertIndirectMachPort(mach_port_t task_port,
mach_port_t port_to_insert);
// Acquire a send right to a named right in |pid|.
// Returns MACH_PORT_NULL on error.
base::mac::ScopedMachSendRight AcquireSendRight(base::ProcessId pid,
mach_port_name_t named_right);
// Extracts a copy of the send right to |named_right| from |task_port|.
// Returns MACH_PORT_NULL on error.
base::mac::ScopedMachSendRight ExtractNamedRight(
mach_port_t task_port,
mach_port_name_t named_right);
// Copies an existing |wire_format|, but substitutes in a different mach port.
MachPortWireFormat CopyWireFormat(const MachPortWireFormat& wire_format,
uint32_t mach_port);
// If the mach port's destination is this process, queue it and notify the
// observers. Otherwise, send it in an IPC to its destination.
void RouteDuplicatedMachPort(const MachPortWireFormat& wire_format);
base::PortProvider* port_provider_;
DISALLOW_COPY_AND_ASSIGN(AttachmentBrokerPrivilegedMac);
};
} // namespace IPC
#endif // IPC_ATTACHMENT_BROKER_PRIVILEGED_MAC_H_
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