mirror of
https://github.com/nestriness/cdc-file-transfer.git
synced 2026-01-30 14:25:36 +02:00
678ee0ffaf
Uses the abstractions written for ServerSocket in ClientSocket, so that it builds on Linux. Also adds a method to poll for connections and uses that in cdc_rsync. Similar code will be used in cdc_fuse_fs to wait for a connection in a future CL.
122 lines
3.1 KiB
C++
122 lines
3.1 KiB
C++
/*
|
|
* Copyright 2023 Google LLC
|
|
*
|
|
* Licensed under the Apache License, Version 2.0 (the "License");
|
|
* you may not use this file except in compliance with the License.
|
|
* You may obtain a copy of the License at
|
|
*
|
|
* http://www.apache.org/licenses/LICENSE-2.0
|
|
*
|
|
* Unless required by applicable law or agreed to in writing, software
|
|
* distributed under the License is distributed on an "AS IS" BASIS,
|
|
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
|
* See the License for the specific language governing permissions and
|
|
* limitations under the License.
|
|
*/
|
|
|
|
#ifndef COMMON_SOCKET_INTERNAL_H_
|
|
|
|
#include "common/platform.h"
|
|
#include "common/util.h"
|
|
|
|
#if PLATFORM_WINDOWS
|
|
|
|
#include <winsock2.h>
|
|
#include <ws2tcpip.h>
|
|
|
|
#elif PLATFORM_LINUX
|
|
|
|
#include <netdb.h>
|
|
#include <netinet/in.h>
|
|
#include <sys/socket.h>
|
|
#include <sys/types.h>
|
|
#include <unistd.h>
|
|
|
|
#include <cerrno>
|
|
|
|
#endif
|
|
|
|
namespace cdc_ft {
|
|
namespace {
|
|
|
|
// Platform-specific abstractions for socket classes.
|
|
|
|
#if PLATFORM_WINDOWS
|
|
|
|
using SocketType = SOCKET;
|
|
using SockAddrType = SOCKADDR;
|
|
constexpr SocketType kInvalidSocket = INVALID_SOCKET;
|
|
constexpr int kSocketError = SOCKET_ERROR;
|
|
constexpr int kSendingEnd = SD_SEND;
|
|
|
|
constexpr int kErrAgain = WSAEWOULDBLOCK; // There's no EAGAIN on Windows.
|
|
constexpr int kErrWouldBlock = WSAEWOULDBLOCK;
|
|
constexpr int kErrAddrInUse = WSAEADDRINUSE;
|
|
constexpr int kErrConnReset = WSAECONNRESET;
|
|
|
|
int GetLastError() { return WSAGetLastError(); }
|
|
|
|
std::string GetErrorStr(int err) { return Util::GetWin32Error(err); }
|
|
|
|
void Close(SocketType* socket) {
|
|
if (*socket != kInvalidSocket) {
|
|
closesocket(*socket);
|
|
*socket = kInvalidSocket;
|
|
}
|
|
}
|
|
|
|
// Not necessary on Windows.
|
|
#define HANDLE_EINTR(x) (x)
|
|
|
|
#elif PLATFORM_LINUX
|
|
|
|
using SocketType = int;
|
|
using SockAddrType = sockaddr;
|
|
constexpr SocketType kInvalidSocket = -1;
|
|
constexpr int kSocketError = -1;
|
|
constexpr int kSendingEnd = SHUT_WR;
|
|
|
|
constexpr int kErrAgain = EAGAIN;
|
|
constexpr int kErrWouldBlock = EWOULDBLOCK;
|
|
constexpr int kErrAddrInUse = EADDRINUSE;
|
|
constexpr int kErrConnReset = ECONNRESET;
|
|
|
|
int GetLastError() { return errno; }
|
|
|
|
std::string GetErrorStr(int err) { return strerror(err); }
|
|
|
|
void Close(SocketType* socket) {
|
|
if (*socket != kInvalidSocket) {
|
|
close(*socket);
|
|
*socket = kInvalidSocket;
|
|
}
|
|
}
|
|
|
|
// Keep re-evaluating the expression |x| while it returns EINTR.
|
|
#define HANDLE_EINTR(x) \
|
|
({ \
|
|
decltype(x) eintr_wrapper_result; \
|
|
do { \
|
|
eintr_wrapper_result = (x); \
|
|
} while (eintr_wrapper_result == -1 && errno == EINTR); \
|
|
eintr_wrapper_result; \
|
|
})
|
|
|
|
#endif
|
|
|
|
std::string GetLastErrorStr() { return GetErrorStr(GetLastError()); }
|
|
|
|
class AddrInfoReleaser {
|
|
public:
|
|
AddrInfoReleaser(addrinfo* addr_infos) : addr_infos_(addr_infos) {}
|
|
~AddrInfoReleaser() { freeaddrinfo(addr_infos_); }
|
|
|
|
private:
|
|
addrinfo* addr_infos_;
|
|
};
|
|
|
|
} // namespace
|
|
} // namespace cdc_ft
|
|
|
|
#endif // COMMON_SOCKET_INTERNAL_H_
|