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/*
* Copyright (C) 2012-2015 Max Kellermann <max@duempel.org>
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* - Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
*
* - Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the
* distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
* FOUNDATION OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
* STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
* OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#ifndef ALLOCATED_SOCKET_ADDRESS_HPP
#define ALLOCATED_SOCKET_ADDRESS_HPP
#include "SocketAddress.hxx"
#include "Features.hxx"
#include "Compiler.h"
#include <algorithm>
#include <stdlib.h>
struct sockaddr;
class Error;
class AllocatedSocketAddress {
public:
typedef SocketAddress::size_type size_type;
private:
struct sockaddr *address;
size_type size;
AllocatedSocketAddress(struct sockaddr *_address,
size_type _size)
:address(_address), size(_size) {}
public:
AllocatedSocketAddress():address(nullptr), size(0) {}
explicit AllocatedSocketAddress(SocketAddress src)
:address(nullptr), size(0) {
*this = src;
}
AllocatedSocketAddress(const AllocatedSocketAddress &) = delete;
AllocatedSocketAddress(AllocatedSocketAddress &&src)
:address(src.address), size(src.size) {
src.address = nullptr;
src.size = 0;
}
~AllocatedSocketAddress() {
free(address);
}
AllocatedSocketAddress &operator=(SocketAddress src);
AllocatedSocketAddress &operator=(const AllocatedSocketAddress &) = delete;
AllocatedSocketAddress &operator=(AllocatedSocketAddress &&src) {
std::swap(address, src.address);
std::swap(size, src.size);
return *this;
}
gcc_pure
bool operator==(SocketAddress other) const {
return (SocketAddress)*this == other;
}
bool operator!=(SocketAddress &other) const {
return !(*this == other);
}
gcc_const
static AllocatedSocketAddress Null() {
return AllocatedSocketAddress(nullptr, 0);
}
bool IsNull() const {
return address == nullptr;
}
size_type GetSize() const {
return size;
}
const struct sockaddr *GetAddress() const {
return address;
}
operator SocketAddress() const {
return SocketAddress(address, size);
}
operator const struct sockaddr *() const {
return address;
}
int GetFamily() const {
return address->sa_family;
}
/**
* Does the object have a well-defined address? Check !IsNull()
* before calling this method.
*/
bool IsDefined() const {
return GetFamily() != AF_UNSPEC;
}
void Clear() {
free(address);
address = nullptr;
size = 0;
}
#ifdef HAVE_UN
/**
* Make this a "local" address (UNIX domain socket). If the path
* begins with a '@', then the rest specifies an "abstract" local
* address.
*/
void SetLocal(const char *path);
#endif
private:
void SetSize(size_type new_size);
};
#endif
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