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23dc3ff0c2
It is now possible to use the special IPC::File type in message arguments. In C++, the type is nothing more than a wrapper over a file descriptor. But when serializing/deserializing IPC::File arguments, LibIPC will use the sendfd/recvfd kernel APIs instead of sending the integer inline. This makes it quite convenient to pass files over IPC, and will allow us to significantly tighten sandboxes in the future :^) Closes https://github.com/SerenityOS/serenity/issues/3643
111 lines
3.2 KiB
C++
111 lines
3.2 KiB
C++
/*
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* Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are met:
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*
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* 1. Redistributions of source code must retain the above copyright notice, this
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* list of conditions and the following disclaimer.
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*
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* 2. Redistributions in binary form must reproduce the above copyright notice,
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* this list of conditions and the following disclaimer in the documentation
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* and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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* DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
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* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
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* CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
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* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#pragma once
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#include <LibIPC/Forward.h>
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#include <LibIPC/Message.h>
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namespace IPC {
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template<typename T>
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bool encode(Encoder&, T&)
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{
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static_assert(DependentFalse<T>, "Base IPC::encode() was instantiated");
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ASSERT_NOT_REACHED();
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}
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class Encoder {
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public:
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explicit Encoder(MessageBuffer& buffer)
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: m_buffer(buffer)
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{
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}
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Encoder& operator<<(bool);
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Encoder& operator<<(u8);
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Encoder& operator<<(u16);
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Encoder& operator<<(u32);
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Encoder& operator<<(u64);
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Encoder& operator<<(i8);
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Encoder& operator<<(i16);
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Encoder& operator<<(i32);
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Encoder& operator<<(i64);
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Encoder& operator<<(float);
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Encoder& operator<<(const char*);
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Encoder& operator<<(const StringView&);
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Encoder& operator<<(const String&);
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Encoder& operator<<(const ByteBuffer&);
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Encoder& operator<<(const URL&);
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Encoder& operator<<(const Dictionary&);
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Encoder& operator<<(const File&);
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template<typename K, typename V>
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Encoder& operator<<(const HashMap<K, V>& hashmap)
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{
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*this << (u32)hashmap.size();
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for (auto it : hashmap) {
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*this << it.key;
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*this << it.value;
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}
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return *this;
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}
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template<typename T>
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Encoder& operator<<(const Vector<T>& vector)
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{
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*this << (u64)vector.size();
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for (auto& value : vector)
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*this << value;
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return *this;
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}
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template<typename T>
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Encoder& operator<<(const T& value)
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{
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encode(value);
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return *this;
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}
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template<typename T>
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Encoder& operator<<(const Optional<T>& optional)
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{
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*this << optional.has_value();
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if (optional.has_value())
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*this << optional.value();
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return *this;
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}
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template<typename T>
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void encode(const T& value)
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{
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IPC::encode(*this, value);
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}
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private:
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MessageBuffer& m_buffer;
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};
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}
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