/*
 * Copyright (c) 2019 TAOS Data, Inc. <jhtao@taosdata.com>
 *
 * This program is free software: you can use, redistribute, and/or modify
 * it under the terms of the GNU Affero General Public License, version 3
 * or later ("AGPL"), as published by the Free Software Foundation.
 *
 * 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.
 *
 * You should have received a copy of the GNU Affero General Public License
 * along with this program. If not, see <http://www.gnu.org/licenses/>.
 */

#ifndef _TD_OS_SOCKET_H_
#define _TD_OS_SOCKET_H_

// If the error is in a third-party library, place this header file under the third-party library header file.
#ifndef ALLOW_FORBID_FUNC
    #define socket SOCKET_FUNC_TAOS_FORBID
    #define bind   BIND_FUNC_TAOS_FORBID
    #define listen LISTEN_FUNC_TAOS_FORBID
    #define accept ACCEPT_FUNC_TAOS_FORBID
    #define epoll_create EPOLL_CREATE_FUNC_TAOS_FORBID
    #define epoll_ctl EPOLL_CTL_FUNC_TAOS_FORBID
    #define epoll_wait EPOLL_WAIT_FUNC_TAOS_FORBID
#endif

#if defined(WINDOWS)
  #include "winsock2.h"
  #include <WS2tcpip.h>
  #include <winbase.h>
  #include <Winsock2.h>
#else
  #include <netinet/in.h>
  #include <sys/epoll.h>
#endif

#ifdef __cplusplus
extern "C" {
#endif

#if (defined(_TD_WINDOWS_64) || defined(_TD_WINDOWS_32)) 
  #define htobe64 htonll
  #if defined(_TD_GO_DLL_)
    uint64_t htonll(uint64_t val);
  #endif
#endif

#if defined(_TD_DARWIN_64)
  #define htobe64 htonll
#endif

#define TAOS_EPOLL_WAIT_TIME 500

typedef struct TdSocketServer *TdSocketServerPtr;
typedef struct TdSocket *TdSocketPtr;
typedef struct TdEpoll *TdEpollPtr;

int32_t taosSendto(TdSocketPtr pSocket, void * msg, int len, unsigned int flags, const struct sockaddr * to, int tolen);
int32_t taosWriteSocket(TdSocketPtr pSocket, void *msg, int len);
int32_t taosReadSocket(TdSocketPtr pSocket, void *msg, int len);
int32_t taosReadFromSocket(TdSocketPtr pSocket, void *buf, int32_t len, int32_t flags, struct sockaddr *destAddr, socklen_t *addrLen);
int32_t taosCloseSocket(TdSocketPtr *ppSocket);
int32_t taosCloseSocketServer(TdSocketServerPtr *ppSocketServer);
int32_t taosShutDownSocketRD(TdSocketPtr pSocket);
int32_t taosShutDownSocketServerRD(TdSocketServerPtr pSocketServer);
int32_t taosShutDownSocketWR(TdSocketPtr pSocket);
int32_t taosShutDownSocketServerWR(TdSocketServerPtr pSocketServer);
int32_t taosShutDownSocketRDWR(TdSocketPtr pSocket);
int32_t taosShutDownSocketServerRDWR(TdSocketServerPtr pSocketServer);
int32_t taosSetNonblocking(TdSocketPtr pSocket, int32_t on);
int32_t taosSetSockOpt(TdSocketPtr pSocket, int32_t level, int32_t optname, void *optval, int32_t optlen);
int32_t taosGetSockOpt(TdSocketPtr pSocket, int32_t level, int32_t optname, void *optval, int32_t *optlen);
int32_t taosWriteMsg(TdSocketPtr pSocket, void *ptr, int32_t nbytes);
int32_t taosReadMsg(TdSocketPtr pSocket, void *ptr, int32_t nbytes);
int32_t taosNonblockwrite(TdSocketPtr pSocket, char *ptr, int32_t nbytes);
int64_t taosCopyFds(TdSocketPtr pSrcSocket, TdSocketPtr pDestSocket, int64_t len);

TdSocketPtr taosOpenUdpSocket(uint32_t localIp, uint16_t localPort);
TdSocketPtr taosOpenTcpClientSocket(uint32_t ip, uint16_t port, uint32_t localIp);
TdSocketServerPtr taosOpenTcpServerSocket(uint32_t ip, uint16_t port);
int32_t taosKeepTcpAlive(TdSocketPtr pSocket);
TdSocketPtr taosAcceptTcpConnectSocket(TdSocketServerPtr pServerSocket, struct sockaddr *destAddr, socklen_t *addrLen);

int32_t taosGetSocketName(TdSocketPtr pSocket,struct sockaddr *destAddr, socklen_t *addrLen);

void     taosBlockSIGPIPE();
uint32_t taosGetIpv4FromFqdn(const char *);
int32_t  taosGetFqdn(char *);
void     tinet_ntoa(char *ipstr, uint32_t ip);
uint32_t ip2uint(const char *const ip_addr);
void     taosIgnSIGPIPE();
void     taosSetMaskSIGPIPE();
uint32_t taosInetAddr(const char *ipAddr);
const char *taosInetNtoa(struct in_addr ipInt);

TdEpollPtr taosCreateEpoll(int32_t size);
int32_t taosCtlEpoll(TdEpollPtr pEpoll, int32_t epollOperate, TdSocketPtr pSocket, struct epoll_event *event);
int32_t taosWaitEpoll(TdEpollPtr pEpoll, struct epoll_event *event, int32_t maxEvents, int32_t timeout);
int32_t taosCloseEpoll(TdEpollPtr *ppEpoll);

#ifdef __cplusplus
}
#endif

#endif /*_TD_OS_SOCKET_H_*/