443 lines
10 KiB
C
443 lines
10 KiB
C
/**
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@file win32.c
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@brief ENet Win32 system specific functions
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*/
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#ifdef _WIN32
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#define ENET_BUILDING_LIB 1
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#include "enet/enet.h"
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#include <windows.h>
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#include <mmsystem.h>
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static enet_uint32 timeBase = 0;
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int
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enet_initialize (void)
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{
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WORD versionRequested = MAKEWORD (1, 1);
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WSADATA wsaData;
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if (WSAStartup (versionRequested, & wsaData))
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return -1;
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if (LOBYTE (wsaData.wVersion) != 1||
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HIBYTE (wsaData.wVersion) != 1)
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{
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WSACleanup ();
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return -1;
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}
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timeBeginPeriod (1);
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return 0;
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}
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void
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enet_deinitialize (void)
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{
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timeEndPeriod (1);
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WSACleanup ();
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}
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enet_uint32
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enet_host_random_seed (void)
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{
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return (enet_uint32) timeGetTime ();
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}
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enet_uint32
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enet_time_get (void)
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{
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return (enet_uint32) timeGetTime () - timeBase;
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}
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void
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enet_time_set (enet_uint32 newTimeBase)
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{
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timeBase = (enet_uint32) timeGetTime () - newTimeBase;
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}
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int
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enet_address_set_host_ip (ENetAddress * address, const char * name)
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{
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enet_uint8 vals [4] = { 0, 0, 0, 0 };
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int i;
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for (i = 0; i < 4; ++ i)
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{
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const char * next = name + 1;
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if (* name != '0')
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{
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long val = strtol (name, (char **) & next, 10);
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if (val < 0 || val > 255 || next == name || next - name > 3)
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return -1;
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vals [i] = (enet_uint8) val;
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}
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if (* next != (i < 3 ? '.' : '\0'))
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return -1;
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name = next + 1;
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}
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memcpy (& address -> host, vals, sizeof (enet_uint32));
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return 0;
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}
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int
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enet_address_set_host (ENetAddress * address, const char * name)
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{
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struct hostent * hostEntry;
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hostEntry = gethostbyname (name);
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if (hostEntry == NULL ||
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hostEntry -> h_addrtype != AF_INET)
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return enet_address_set_host_ip (address, name);
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address -> host = * (enet_uint32 *) hostEntry -> h_addr_list [0];
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return 0;
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}
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int
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enet_address_get_host_ip (const ENetAddress * address, char * name, size_t nameLength)
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{
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char * addr = inet_ntoa (* (struct in_addr *) & address -> host);
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if (addr == NULL)
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return -1;
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else
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{
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size_t addrLen = strlen(addr);
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if (addrLen >= nameLength)
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return -1;
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memcpy (name, addr, addrLen + 1);
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}
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return 0;
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}
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int
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enet_address_get_host (const ENetAddress * address, char * name, size_t nameLength)
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{
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struct in_addr in;
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struct hostent * hostEntry;
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in.s_addr = address -> host;
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hostEntry = gethostbyaddr ((char *) & in, sizeof (struct in_addr), AF_INET);
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if (hostEntry == NULL)
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return enet_address_get_host_ip (address, name, nameLength);
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else
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{
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size_t hostLen = strlen (hostEntry -> h_name);
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if (hostLen >= nameLength)
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return -1;
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memcpy (name, hostEntry -> h_name, hostLen + 1);
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}
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return 0;
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}
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int
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enet_socket_bind (ENetSocket socket, const ENetAddress * address)
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{
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struct sockaddr_in sin;
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memset (& sin, 0, sizeof (struct sockaddr_in));
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sin.sin_family = AF_INET;
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if (address != NULL)
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{
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sin.sin_port = ENET_HOST_TO_NET_16 (address -> port);
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sin.sin_addr.s_addr = address -> host;
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}
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else
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{
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sin.sin_port = 0;
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sin.sin_addr.s_addr = INADDR_ANY;
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}
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return bind (socket,
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(struct sockaddr *) & sin,
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sizeof (struct sockaddr_in)) == SOCKET_ERROR ? -1 : 0;
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}
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int
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enet_socket_get_address (ENetSocket socket, ENetAddress * address)
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{
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struct sockaddr_in sin;
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int sinLength = sizeof (struct sockaddr_in);
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if (getsockname (socket, (struct sockaddr *) & sin, & sinLength) == -1)
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return -1;
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address -> host = (enet_uint32) sin.sin_addr.s_addr;
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address -> port = ENET_NET_TO_HOST_16 (sin.sin_port);
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return 0;
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}
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int
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enet_socket_listen (ENetSocket socket, int backlog)
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{
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return listen (socket, backlog < 0 ? SOMAXCONN : backlog) == SOCKET_ERROR ? -1 : 0;
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}
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ENetSocket
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enet_socket_create (ENetSocketType type)
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{
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return socket (PF_INET, type == ENET_SOCKET_TYPE_DATAGRAM ? SOCK_DGRAM : SOCK_STREAM, 0);
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}
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int
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enet_socket_set_option (ENetSocket socket, ENetSocketOption option, int value)
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{
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int result = SOCKET_ERROR;
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switch (option)
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{
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case ENET_SOCKOPT_NONBLOCK:
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{
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u_long nonBlocking = (u_long) value;
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result = ioctlsocket (socket, FIONBIO, & nonBlocking);
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break;
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}
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case ENET_SOCKOPT_BROADCAST:
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result = setsockopt (socket, SOL_SOCKET, SO_BROADCAST, (char *) & value, sizeof (int));
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break;
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case ENET_SOCKOPT_REUSEADDR:
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result = setsockopt (socket, SOL_SOCKET, SO_REUSEADDR, (char *) & value, sizeof (int));
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break;
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case ENET_SOCKOPT_RCVBUF:
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result = setsockopt (socket, SOL_SOCKET, SO_RCVBUF, (char *) & value, sizeof (int));
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break;
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case ENET_SOCKOPT_SNDBUF:
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result = setsockopt (socket, SOL_SOCKET, SO_SNDBUF, (char *) & value, sizeof (int));
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break;
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case ENET_SOCKOPT_RCVTIMEO:
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result = setsockopt (socket, SOL_SOCKET, SO_RCVTIMEO, (char *) & value, sizeof (int));
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break;
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case ENET_SOCKOPT_SNDTIMEO:
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result = setsockopt (socket, SOL_SOCKET, SO_SNDTIMEO, (char *) & value, sizeof (int));
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break;
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case ENET_SOCKOPT_NODELAY:
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result = setsockopt (socket, IPPROTO_TCP, TCP_NODELAY, (char *) & value, sizeof (int));
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break;
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default:
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break;
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}
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return result == SOCKET_ERROR ? -1 : 0;
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}
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int
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enet_socket_get_option (ENetSocket socket, ENetSocketOption option, int * value)
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{
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int result = SOCKET_ERROR, len;
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switch (option)
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{
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case ENET_SOCKOPT_ERROR:
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len = sizeof(int);
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result = getsockopt (socket, SOL_SOCKET, SO_ERROR, (char *) value, & len);
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break;
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default:
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break;
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}
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return result == SOCKET_ERROR ? -1 : 0;
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}
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int
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enet_socket_connect (ENetSocket socket, const ENetAddress * address)
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{
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struct sockaddr_in sin;
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int result;
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memset (& sin, 0, sizeof (struct sockaddr_in));
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sin.sin_family = AF_INET;
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sin.sin_port = ENET_HOST_TO_NET_16 (address -> port);
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sin.sin_addr.s_addr = address -> host;
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result = connect (socket, (struct sockaddr *) & sin, sizeof (struct sockaddr_in));
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if (result == SOCKET_ERROR && WSAGetLastError () != WSAEWOULDBLOCK)
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return -1;
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return 0;
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}
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ENetSocket
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enet_socket_accept (ENetSocket socket, ENetAddress * address)
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{
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SOCKET result;
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struct sockaddr_in sin;
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int sinLength = sizeof (struct sockaddr_in);
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result = accept (socket,
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address != NULL ? (struct sockaddr *) & sin : NULL,
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address != NULL ? & sinLength : NULL);
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if (result == INVALID_SOCKET)
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return ENET_SOCKET_NULL;
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if (address != NULL)
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{
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address -> host = (enet_uint32) sin.sin_addr.s_addr;
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address -> port = ENET_NET_TO_HOST_16 (sin.sin_port);
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}
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return result;
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}
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int
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enet_socket_shutdown (ENetSocket socket, ENetSocketShutdown how)
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{
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return shutdown (socket, (int) how) == SOCKET_ERROR ? -1 : 0;
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}
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void
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enet_socket_destroy (ENetSocket socket)
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{
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if (socket != INVALID_SOCKET)
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closesocket (socket);
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}
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int
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enet_socket_send (ENetSocket socket,
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const ENetAddress * address,
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const ENetBuffer * buffers,
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size_t bufferCount)
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{
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struct sockaddr_in sin;
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DWORD sentLength = 0;
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if (address != NULL)
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{
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memset (& sin, 0, sizeof (struct sockaddr_in));
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sin.sin_family = AF_INET;
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sin.sin_port = ENET_HOST_TO_NET_16 (address -> port);
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sin.sin_addr.s_addr = address -> host;
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}
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if (WSASendTo (socket,
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(LPWSABUF) buffers,
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(DWORD) bufferCount,
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& sentLength,
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0,
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address != NULL ? (struct sockaddr *) & sin : NULL,
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address != NULL ? sizeof (struct sockaddr_in) : 0,
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NULL,
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NULL) == SOCKET_ERROR)
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{
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if (WSAGetLastError () == WSAEWOULDBLOCK)
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return 0;
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return -1;
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}
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return (int) sentLength;
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}
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int
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enet_socket_receive (ENetSocket socket,
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ENetAddress * address,
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ENetBuffer * buffers,
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size_t bufferCount)
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{
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INT sinLength = sizeof (struct sockaddr_in);
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DWORD flags = 0,
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recvLength = 0;
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struct sockaddr_in sin;
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if (WSARecvFrom (socket,
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(LPWSABUF) buffers,
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(DWORD) bufferCount,
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& recvLength,
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& flags,
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address != NULL ? (struct sockaddr *) & sin : NULL,
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address != NULL ? & sinLength : NULL,
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NULL,
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NULL) == SOCKET_ERROR)
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{
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switch (WSAGetLastError ())
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{
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case WSAEWOULDBLOCK:
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case WSAECONNRESET:
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return 0;
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}
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return -1;
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}
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if (flags & MSG_PARTIAL)
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return -1;
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if (address != NULL)
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{
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address -> host = (enet_uint32) sin.sin_addr.s_addr;
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address -> port = ENET_NET_TO_HOST_16 (sin.sin_port);
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}
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return (int) recvLength;
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}
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int
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enet_socketset_select (ENetSocket maxSocket, ENetSocketSet * readSet, ENetSocketSet * writeSet, enet_uint32 timeout)
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{
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struct timeval timeVal;
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timeVal.tv_sec = timeout / 1000;
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timeVal.tv_usec = (timeout % 1000) * 1000;
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return select (maxSocket + 1, readSet, writeSet, NULL, & timeVal);
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}
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int
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enet_socket_wait (ENetSocket socket, enet_uint32 * condition, enet_uint32 timeout)
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{
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fd_set readSet, writeSet;
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struct timeval timeVal;
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int selectCount;
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timeVal.tv_sec = timeout / 1000;
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timeVal.tv_usec = (timeout % 1000) * 1000;
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FD_ZERO (& readSet);
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FD_ZERO (& writeSet);
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if (* condition & ENET_SOCKET_WAIT_SEND)
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FD_SET (socket, & writeSet);
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if (* condition & ENET_SOCKET_WAIT_RECEIVE)
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FD_SET (socket, & readSet);
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selectCount = select (socket + 1, & readSet, & writeSet, NULL, & timeVal);
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if (selectCount < 0)
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return -1;
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* condition = ENET_SOCKET_WAIT_NONE;
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if (selectCount == 0)
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return 0;
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if (FD_ISSET (socket, & writeSet))
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* condition |= ENET_SOCKET_WAIT_SEND;
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if (FD_ISSET (socket, & readSet))
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* condition |= ENET_SOCKET_WAIT_RECEIVE;
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return 0;
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}
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#endif
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