440 lines
9.8 KiB
C
440 lines
9.8 KiB
C
/**
|
|
@file unix.c
|
|
@brief ENet Unix system specific functions
|
|
*/
|
|
#ifndef WIN32
|
|
|
|
#include <sys/types.h>
|
|
#include <sys/socket.h>
|
|
#include <sys/ioctl.h>
|
|
#include <sys/time.h>
|
|
#include <arpa/inet.h>
|
|
#include <netdb.h>
|
|
#include <unistd.h>
|
|
#include <string.h>
|
|
#include <errno.h>
|
|
#include <time.h>
|
|
|
|
#define HAS_SOCKLEN_T
|
|
#define ENET_BUILDING_LIB 1
|
|
#include "enet/enet.h"
|
|
|
|
#ifdef HAS_FCNTL
|
|
#include <fcntl.h>
|
|
#endif
|
|
|
|
#ifdef __APPLE__
|
|
#undef HAS_POLL
|
|
#endif
|
|
|
|
#ifdef HAS_POLL
|
|
#include <sys/poll.h>
|
|
#endif
|
|
|
|
#ifndef HAS_SOCKLEN_T
|
|
typedef int socklen_t;
|
|
#endif
|
|
|
|
#ifndef MSG_NOSIGNAL
|
|
#define MSG_NOSIGNAL 0
|
|
#endif
|
|
|
|
static enet_uint32 timeBase = 0;
|
|
|
|
int
|
|
enet_initialize (void)
|
|
{
|
|
return 0;
|
|
}
|
|
|
|
void
|
|
enet_deinitialize (void)
|
|
{
|
|
}
|
|
|
|
enet_uint32
|
|
enet_time_get (void)
|
|
{
|
|
struct timeval timeVal;
|
|
|
|
gettimeofday (& timeVal, NULL);
|
|
|
|
return timeVal.tv_sec * 1000 + timeVal.tv_usec / 1000 - timeBase;
|
|
}
|
|
|
|
void
|
|
enet_time_set (enet_uint32 newTimeBase)
|
|
{
|
|
struct timeval timeVal;
|
|
|
|
gettimeofday (& timeVal, NULL);
|
|
|
|
timeBase = timeVal.tv_sec * 1000 + timeVal.tv_usec / 1000 - newTimeBase;
|
|
}
|
|
|
|
int
|
|
enet_address_set_host (ENetAddress * address, const char * name)
|
|
{
|
|
struct hostent * hostEntry = NULL;
|
|
#ifdef HAS_GETHOSTBYNAME_R
|
|
struct hostent hostData;
|
|
char buffer [2048];
|
|
int errnum;
|
|
|
|
#if defined(linux) || defined(__linux) || defined(__linux__) || defined(__FreeBSD__) || defined(__FreeBSD_kernel__)
|
|
gethostbyname_r (name, & hostData, buffer, sizeof (buffer), & hostEntry, & errnum);
|
|
#else
|
|
hostEntry = gethostbyname_r (name, & hostData, buffer, sizeof (buffer), & errnum);
|
|
#endif
|
|
#else
|
|
hostEntry = gethostbyname (name);
|
|
#endif
|
|
|
|
if (hostEntry == NULL ||
|
|
hostEntry -> h_addrtype != AF_INET)
|
|
{
|
|
#ifdef HAS_INET_PTON
|
|
if (! inet_pton (AF_INET, name, & address -> host))
|
|
#else
|
|
if (! inet_aton (name, (struct in_addr *) & address -> host))
|
|
#endif
|
|
return -1;
|
|
return 0;
|
|
}
|
|
|
|
address -> host = * (enet_uint32 *) hostEntry -> h_addr_list [0];
|
|
|
|
return 0;
|
|
}
|
|
|
|
int
|
|
enet_address_get_host_ip (const ENetAddress * address, char * name, size_t nameLength)
|
|
{
|
|
#ifdef HAS_INET_NTOP
|
|
if (inet_ntop (AF_INET, & address -> host, name, nameLength) == NULL)
|
|
#else
|
|
char * addr = inet_ntoa (* (struct in_addr *) & address -> host);
|
|
if (addr != NULL)
|
|
strncpy (name, addr, nameLength);
|
|
else
|
|
#endif
|
|
return -1;
|
|
return 0;
|
|
}
|
|
|
|
int
|
|
enet_address_get_host (const ENetAddress * address, char * name, size_t nameLength)
|
|
{
|
|
struct in_addr in;
|
|
struct hostent * hostEntry = NULL;
|
|
#ifdef HAS_GETHOSTBYADDR_R
|
|
struct hostent hostData;
|
|
char buffer [2048];
|
|
int errnum;
|
|
|
|
in.s_addr = address -> host;
|
|
|
|
#if defined(linux) || defined(__linux) || defined(__linux__) || defined(__FreeBSD__) || defined(__FreeBSD_kernel__)
|
|
gethostbyaddr_r ((char *) & in, sizeof (struct in_addr), AF_INET, & hostData, buffer, sizeof (buffer), & hostEntry, & errnum);
|
|
#else
|
|
hostEntry = gethostbyaddr_r ((char *) & in, sizeof (struct in_addr), AF_INET, & hostData, buffer, sizeof (buffer), & errnum);
|
|
#endif
|
|
#else
|
|
in.s_addr = address -> host;
|
|
|
|
hostEntry = gethostbyaddr ((char *) & in, sizeof (struct in_addr), AF_INET);
|
|
#endif
|
|
|
|
if (hostEntry == NULL)
|
|
return enet_address_get_host_ip (address, name, nameLength);
|
|
|
|
strncpy (name, hostEntry -> h_name, nameLength);
|
|
|
|
return 0;
|
|
}
|
|
|
|
int
|
|
enet_socket_bind (ENetSocket socket, const ENetAddress * address)
|
|
{
|
|
struct sockaddr_in sin;
|
|
|
|
memset (& sin, 0, sizeof (struct sockaddr_in));
|
|
|
|
sin.sin_family = AF_INET;
|
|
|
|
if (address != NULL)
|
|
{
|
|
sin.sin_port = ENET_HOST_TO_NET_16 (address -> port);
|
|
sin.sin_addr.s_addr = address -> host;
|
|
}
|
|
else
|
|
{
|
|
sin.sin_port = 0;
|
|
sin.sin_addr.s_addr = INADDR_ANY;
|
|
}
|
|
|
|
return bind (socket,
|
|
(struct sockaddr *) & sin,
|
|
sizeof (struct sockaddr_in));
|
|
}
|
|
|
|
int
|
|
enet_socket_listen (ENetSocket socket, int backlog)
|
|
{
|
|
return listen (socket, backlog < 0 ? SOMAXCONN : backlog);
|
|
}
|
|
|
|
ENetSocket
|
|
enet_socket_create (ENetSocketType type)
|
|
{
|
|
return socket (PF_INET, type == ENET_SOCKET_TYPE_DATAGRAM ? SOCK_DGRAM : SOCK_STREAM, 0);
|
|
}
|
|
|
|
int
|
|
enet_socket_set_option (ENetSocket socket, ENetSocketOption option, int value)
|
|
{
|
|
int result = -1;
|
|
switch (option)
|
|
{
|
|
case ENET_SOCKOPT_NONBLOCK:
|
|
#ifdef HAS_FCNTL
|
|
result = fcntl (socket, F_SETFL, O_NONBLOCK | fcntl (socket, F_GETFL));
|
|
#else
|
|
result = ioctl (socket, FIONBIO, & value);
|
|
#endif
|
|
break;
|
|
|
|
case ENET_SOCKOPT_BROADCAST:
|
|
result = setsockopt (socket, SOL_SOCKET, SO_BROADCAST, (char *) & value, sizeof (int));
|
|
break;
|
|
|
|
case ENET_SOCKOPT_REUSEADDR:
|
|
result = setsockopt (socket, SOL_SOCKET, SO_REUSEADDR, (char *) & value, sizeof (int));
|
|
break;
|
|
|
|
case ENET_SOCKOPT_RCVBUF:
|
|
result = setsockopt (socket, SOL_SOCKET, SO_RCVBUF, (char *) & value, sizeof (int));
|
|
break;
|
|
|
|
case ENET_SOCKOPT_SNDBUF:
|
|
result = setsockopt (socket, SOL_SOCKET, SO_SNDBUF, (char *) & value, sizeof (int));
|
|
break;
|
|
|
|
default:
|
|
break;
|
|
}
|
|
return result == -1 ? -1 : 0;
|
|
}
|
|
|
|
int
|
|
enet_socket_connect (ENetSocket socket, const ENetAddress * address)
|
|
{
|
|
struct sockaddr_in sin;
|
|
|
|
memset (& sin, 0, sizeof (struct sockaddr_in));
|
|
|
|
sin.sin_family = AF_INET;
|
|
sin.sin_port = ENET_HOST_TO_NET_16 (address -> port);
|
|
sin.sin_addr.s_addr = address -> host;
|
|
|
|
return connect (socket, (struct sockaddr *) & sin, sizeof (struct sockaddr_in));
|
|
}
|
|
|
|
ENetSocket
|
|
enet_socket_accept (ENetSocket socket, ENetAddress * address)
|
|
{
|
|
int result;
|
|
struct sockaddr_in sin;
|
|
socklen_t sinLength = sizeof (struct sockaddr_in);
|
|
|
|
result = accept (socket,
|
|
address != NULL ? (struct sockaddr *) & sin : NULL,
|
|
address != NULL ? & sinLength : NULL);
|
|
|
|
if (result == -1)
|
|
return ENET_SOCKET_NULL;
|
|
|
|
if (address != NULL)
|
|
{
|
|
address -> host = (enet_uint32) sin.sin_addr.s_addr;
|
|
address -> port = ENET_NET_TO_HOST_16 (sin.sin_port);
|
|
}
|
|
|
|
return result;
|
|
}
|
|
|
|
void
|
|
enet_socket_destroy (ENetSocket socket)
|
|
{
|
|
close (socket);
|
|
}
|
|
|
|
int
|
|
enet_socket_send (ENetSocket socket,
|
|
const ENetAddress * address,
|
|
const ENetBuffer * buffers,
|
|
size_t bufferCount)
|
|
{
|
|
struct msghdr msgHdr;
|
|
struct sockaddr_in sin;
|
|
int sentLength;
|
|
|
|
memset (& msgHdr, 0, sizeof (struct msghdr));
|
|
|
|
if (address != NULL)
|
|
{
|
|
memset (& sin, 0, sizeof (struct sockaddr_in));
|
|
|
|
sin.sin_family = AF_INET;
|
|
sin.sin_port = ENET_HOST_TO_NET_16 (address -> port);
|
|
sin.sin_addr.s_addr = address -> host;
|
|
|
|
msgHdr.msg_name = & sin;
|
|
msgHdr.msg_namelen = sizeof (struct sockaddr_in);
|
|
}
|
|
|
|
msgHdr.msg_iov = (struct iovec *) buffers;
|
|
msgHdr.msg_iovlen = bufferCount;
|
|
|
|
sentLength = sendmsg (socket, & msgHdr, MSG_NOSIGNAL);
|
|
|
|
if (sentLength == -1)
|
|
{
|
|
if (errno == EWOULDBLOCK)
|
|
return 0;
|
|
|
|
return -1;
|
|
}
|
|
|
|
return sentLength;
|
|
}
|
|
|
|
int
|
|
enet_socket_receive (ENetSocket socket,
|
|
ENetAddress * address,
|
|
ENetBuffer * buffers,
|
|
size_t bufferCount)
|
|
{
|
|
struct msghdr msgHdr;
|
|
struct sockaddr_in sin;
|
|
int recvLength;
|
|
|
|
memset (& msgHdr, 0, sizeof (struct msghdr));
|
|
|
|
if (address != NULL)
|
|
{
|
|
msgHdr.msg_name = & sin;
|
|
msgHdr.msg_namelen = sizeof (struct sockaddr_in);
|
|
}
|
|
|
|
msgHdr.msg_iov = (struct iovec *) buffers;
|
|
msgHdr.msg_iovlen = bufferCount;
|
|
|
|
recvLength = recvmsg (socket, & msgHdr, MSG_NOSIGNAL);
|
|
|
|
if (recvLength == -1)
|
|
{
|
|
if (errno == EWOULDBLOCK)
|
|
return 0;
|
|
|
|
return -1;
|
|
}
|
|
|
|
#ifdef HAS_MSGHDR_FLAGS
|
|
if (msgHdr.msg_flags & MSG_TRUNC)
|
|
return -1;
|
|
#endif
|
|
|
|
if (address != NULL)
|
|
{
|
|
address -> host = (enet_uint32) sin.sin_addr.s_addr;
|
|
address -> port = ENET_NET_TO_HOST_16 (sin.sin_port);
|
|
}
|
|
|
|
return recvLength;
|
|
}
|
|
|
|
int
|
|
enet_socketset_select (ENetSocket maxSocket, ENetSocketSet * readSet, ENetSocketSet * writeSet, enet_uint32 timeout)
|
|
{
|
|
struct timeval timeVal;
|
|
|
|
timeVal.tv_sec = timeout / 1000;
|
|
timeVal.tv_usec = (timeout % 1000) * 1000;
|
|
|
|
return select (maxSocket + 1, readSet, writeSet, NULL, & timeVal);
|
|
}
|
|
|
|
int
|
|
enet_socket_wait (ENetSocket socket, enet_uint32 * condition, enet_uint32 timeout)
|
|
{
|
|
#ifdef HAS_POLL
|
|
struct pollfd pollSocket;
|
|
int pollCount;
|
|
|
|
pollSocket.fd = socket;
|
|
pollSocket.events = 0;
|
|
|
|
if (* condition & ENET_SOCKET_WAIT_SEND)
|
|
pollSocket.events |= POLLOUT;
|
|
|
|
if (* condition & ENET_SOCKET_WAIT_RECEIVE)
|
|
pollSocket.events |= POLLIN;
|
|
|
|
pollCount = poll (& pollSocket, 1, timeout);
|
|
|
|
if (pollCount < 0)
|
|
return -1;
|
|
|
|
* condition = ENET_SOCKET_WAIT_NONE;
|
|
|
|
if (pollCount == 0)
|
|
return 0;
|
|
|
|
if (pollSocket.revents & POLLOUT)
|
|
* condition |= ENET_SOCKET_WAIT_SEND;
|
|
|
|
if (pollSocket.revents & POLLIN)
|
|
* condition |= ENET_SOCKET_WAIT_RECEIVE;
|
|
|
|
return 0;
|
|
#else
|
|
fd_set readSet, writeSet;
|
|
struct timeval timeVal;
|
|
int selectCount;
|
|
|
|
timeVal.tv_sec = timeout / 1000;
|
|
timeVal.tv_usec = (timeout % 1000) * 1000;
|
|
|
|
FD_ZERO (& readSet);
|
|
FD_ZERO (& writeSet);
|
|
|
|
if (* condition & ENET_SOCKET_WAIT_SEND)
|
|
FD_SET (socket, & writeSet);
|
|
|
|
if (* condition & ENET_SOCKET_WAIT_RECEIVE)
|
|
FD_SET (socket, & readSet);
|
|
|
|
selectCount = select (socket + 1, & readSet, & writeSet, NULL, & timeVal);
|
|
|
|
if (selectCount < 0)
|
|
return -1;
|
|
|
|
* condition = ENET_SOCKET_WAIT_NONE;
|
|
|
|
if (selectCount == 0)
|
|
return 0;
|
|
|
|
if (FD_ISSET (socket, & writeSet))
|
|
* condition |= ENET_SOCKET_WAIT_SEND;
|
|
|
|
if (FD_ISSET (socket, & readSet))
|
|
* condition |= ENET_SOCKET_WAIT_RECEIVE;
|
|
|
|
return 0;
|
|
#endif
|
|
}
|
|
|
|
#endif
|
|
|