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cb87725ec8
This refactor eliminates the need for a second "fd passing socket" on Lagom, as it uses SCM_RIGHTS in the expected fashion, to send fds along with the data of our Unix socket message.
76 lines
1.5 KiB
C++
76 lines
1.5 KiB
C++
/*
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* Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
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* Copyright (c) 2022, the SerenityOS developers.
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*
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* SPDX-License-Identifier: BSD-2-Clause
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*/
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#pragma once
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#include <AK/Error.h>
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#include <AK/RefCounted.h>
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#include <AK/RefPtr.h>
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#include <AK/Vector.h>
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#include <LibCore/Forward.h>
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#include <unistd.h>
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namespace IPC {
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class AutoCloseFileDescriptor : public RefCounted<AutoCloseFileDescriptor> {
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public:
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AutoCloseFileDescriptor(int fd)
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: m_fd(fd)
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{
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}
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~AutoCloseFileDescriptor()
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{
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if (m_fd != -1)
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close(m_fd);
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}
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int value() const { return m_fd; }
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private:
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int m_fd;
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};
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class MessageBuffer {
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public:
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MessageBuffer();
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ErrorOr<void> extend_data_capacity(size_t capacity);
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ErrorOr<void> append_data(u8 const* values, size_t count);
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ErrorOr<void> append_file_descriptor(int fd);
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ErrorOr<void> transfer_message(Core::LocalSocket& socket);
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private:
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Vector<u8, 1024> m_data;
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Vector<NonnullRefPtr<AutoCloseFileDescriptor>, 1> m_fds;
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};
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enum class ErrorCode : u32 {
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PeerDisconnected
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};
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template<typename Value>
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using IPCErrorOr = ErrorOr<Value, ErrorCode>;
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class Message {
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public:
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virtual ~Message() = default;
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virtual u32 endpoint_magic() const = 0;
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virtual int message_id() const = 0;
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virtual char const* message_name() const = 0;
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virtual bool valid() const = 0;
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virtual ErrorOr<MessageBuffer> encode() const = 0;
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protected:
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Message() = default;
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};
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}
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