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/**
* Copyright (C) 2018-present MongoDB, Inc.
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the Server Side Public License, version 1,
* as published by MongoDB, Inc.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* Server Side Public License for more details.
*
* You should have received a copy of the Server Side Public License
* along with this program. If not, see
* <http://www.mongodb.com/licensing/server-side-public-license>.
*
* As a special exception, the copyright holders give permission to link the
* code of portions of this program with the OpenSSL library under certain
* conditions as described in each individual source file and distribute
* linked combinations including the program with the OpenSSL library. You
* must comply with the Server Side Public License in all respects for
* all of the code used other than as permitted herein. If you modify file(s)
* with this exception, you may extend this exception to your version of the
* file(s), but you are not obligated to do so. If you do not wish to do so,
* delete this exception statement from your version. If you delete this
* exception statement from all source files in the program, then also delete
* it in the license file.
*/
#pragma once
#include <string>
#include <vector>
#ifndef _WIN32
#include <errno.h>
#include <sys/socket.h>
#include <sys/types.h>
#include <sys/un.h>
#ifdef __OpenBSD__
#include <sys/uio.h>
#endif // __OpenBSD__
#endif // not _WIN32
#include "mongo/base/string_data.h"
namespace mongo {
class BSONObjBuilder;
#if defined(_WIN32)
typedef short sa_family_t;
typedef int socklen_t;
// This won't actually be used on windows
struct sockaddr_un {
short sun_family;
char sun_path[108]; // length from unix header
};
#endif // _WIN32
/**
* Wrapper around os representation of network address.
*/
struct SockAddr {
SockAddr();
explicit SockAddr(int sourcePort); /* listener side */
explicit SockAddr(const sockaddr* other, socklen_t size);
explicit SockAddr(const sockaddr* other, socklen_t size, StringData hostOrIp);
/**
* Initialize a SockAddr for a given IP or Hostname.
*
* If target fails to resolve/parse, this function may throw or the resulting SockAddr may be
* equivalent to SockAddr(port).
*
* If target is a unix domain socket, a uassert() exception will be thrown on windows or if addr
* exceeds maximum path length.
*
* If target resolves to more than one address, only the first address will be used. Others will
* be discarded. SockAddr::createAll() is recommended for capturing all addresses.
*/
static SockAddr create(StringData target, int port, sa_family_t familyHint);
/**
* Resolve an ip or hostname to a vector of SockAddr objects.
*
* Works similar to SockAddr(StringData, int, sa_family_t) above,
* however all addresses returned from ::getaddrinfo() are used,
* it never falls-open to SockAddr(port),
* and isInvalid() SockAddrs are excluded.
*
* May return an empty vector.
*/
static std::vector<SockAddr> createAll(StringData target, int port, sa_family_t familyHint);
template <typename T>
T& as() {
return *(T*)(&sa);
}
template <typename T>
const T& as() const {
return *(const T*)(&sa);
}
std::string hostOrIp() const {
return _hostOrIp;
}
std::string toString(bool includePort = true) const;
bool isValid() const {
return _isValid;
}
bool isIP() const;
/**
* @return one of AF_INET, AF_INET6, or AF_UNIX
*/
sa_family_t getType() const;
unsigned getPort() const;
std::string getAddr() const;
bool isLocalHost() const;
bool isDefaultRoute() const;
bool isAnonymousUNIXSocket() const;
bool operator==(const SockAddr& r) const;
bool operator!=(const SockAddr& r) const;
bool operator<(const SockAddr& r) const;
const sockaddr* raw() const {
return (sockaddr*)&sa;
}
sockaddr* raw() {
return (sockaddr*)&sa;
}
socklen_t addressSize;
void serializeToBSON(StringData fieldName, BSONObjBuilder* builder) const;
private:
void initUnixDomainSocket(StringData path, int port);
std::string _hostOrIp;
struct sockaddr_storage sa;
bool _isValid = false;
};
} // namespace mongo
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