diff options
Diffstat (limited to 'WinQuake/net_wins.c')
| -rw-r--r-- | WinQuake/net_wins.c | 575 |
1 files changed, 575 insertions, 0 deletions
diff --git a/WinQuake/net_wins.c b/WinQuake/net_wins.c new file mode 100644 index 0000000..3d188ed --- /dev/null +++ b/WinQuake/net_wins.c @@ -0,0 +1,575 @@ +/* +Copyright (C) 1996-1997 Id Software, Inc. + +This program is free software; you can redistribute it and/or +modify it under the terms of the GNU General Public License +as published by the Free Software Foundation; either version 2 +of the License, or (at your option) any later version. + +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 GNU General Public License for more details. + +You should have received a copy of the GNU General Public License +along with this program; if not, write to the Free Software +Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. + +*/ +// net_wins.c + +#include "quakedef.h" +#include "winquake.h" + +extern cvar_t hostname; + +#define MAXHOSTNAMELEN 256 + +static int net_acceptsocket = -1; // socket for fielding new connections +static int net_controlsocket; +static int net_broadcastsocket = 0; +static struct qsockaddr broadcastaddr; + +static unsigned long myAddr; + +qboolean winsock_lib_initialized; + +int (PASCAL FAR *pWSAStartup)(WORD wVersionRequired, LPWSADATA lpWSAData); +int (PASCAL FAR *pWSACleanup)(void); +int (PASCAL FAR *pWSAGetLastError)(void); +SOCKET (PASCAL FAR *psocket)(int af, int type, int protocol); +int (PASCAL FAR *pioctlsocket)(SOCKET s, long cmd, u_long FAR *argp); +int (PASCAL FAR *psetsockopt)(SOCKET s, int level, int optname, + const char FAR * optval, int optlen); +int (PASCAL FAR *precvfrom)(SOCKET s, char FAR * buf, int len, int flags, + struct sockaddr FAR *from, int FAR * fromlen); +int (PASCAL FAR *psendto)(SOCKET s, const char FAR * buf, int len, int flags, + const struct sockaddr FAR *to, int tolen); +int (PASCAL FAR *pclosesocket)(SOCKET s); +int (PASCAL FAR *pgethostname)(char FAR * name, int namelen); +struct hostent FAR * (PASCAL FAR *pgethostbyname)(const char FAR * name); +struct hostent FAR * (PASCAL FAR *pgethostbyaddr)(const char FAR * addr, + int len, int type); +int (PASCAL FAR *pgetsockname)(SOCKET s, struct sockaddr FAR *name, + int FAR * namelen); + +#include "net_wins.h" + +int winsock_initialized = 0; +WSADATA winsockdata; + +//============================================================================= + +static double blocktime; + +BOOL PASCAL FAR BlockingHook(void) +{ + MSG msg; + BOOL ret; + + if ((Sys_FloatTime() - blocktime) > 2.0) + { + WSACancelBlockingCall(); + return FALSE; + } + + /* get the next message, if any */ + ret = (BOOL) PeekMessage(&msg, NULL, 0, 0, PM_REMOVE); + + /* if we got one, process it */ + if (ret) { + TranslateMessage(&msg); + DispatchMessage(&msg); + } + + /* TRUE if we got a message */ + return ret; +} + + +void WINS_GetLocalAddress() +{ + struct hostent *local = NULL; + char buff[MAXHOSTNAMELEN]; + unsigned long addr; + + if (myAddr != INADDR_ANY) + return; + + if (pgethostname(buff, MAXHOSTNAMELEN) == SOCKET_ERROR) + return; + + blocktime = Sys_FloatTime(); + WSASetBlockingHook(BlockingHook); + local = pgethostbyname(buff); + WSAUnhookBlockingHook(); + if (local == NULL) + return; + + myAddr = *(int *)local->h_addr_list[0]; + + addr = ntohl(myAddr); + sprintf(my_tcpip_address, "%d.%d.%d.%d", (addr >> 24) & 0xff, (addr >> 16) & 0xff, (addr >> 8) & 0xff, addr & 0xff); +} + + +int WINS_Init (void) +{ + int i; + char buff[MAXHOSTNAMELEN]; + char *p; + int r; + WORD wVersionRequested; + HINSTANCE hInst; + +// initialize the Winsock function vectors (we do this instead of statically linking +// so we can run on Win 3.1, where there isn't necessarily Winsock) + hInst = LoadLibrary("wsock32.dll"); + + if (hInst == NULL) + { + Con_SafePrintf ("Failed to load winsock.dll\n"); + winsock_lib_initialized = false; + return -1; + } + + winsock_lib_initialized = true; + + pWSAStartup = (void *)GetProcAddress(hInst, "WSAStartup"); + pWSACleanup = (void *)GetProcAddress(hInst, "WSACleanup"); + pWSAGetLastError = (void *)GetProcAddress(hInst, "WSAGetLastError"); + psocket = (void *)GetProcAddress(hInst, "socket"); + pioctlsocket = (void *)GetProcAddress(hInst, "ioctlsocket"); + psetsockopt = (void *)GetProcAddress(hInst, "setsockopt"); + precvfrom = (void *)GetProcAddress(hInst, "recvfrom"); + psendto = (void *)GetProcAddress(hInst, "sendto"); + pclosesocket = (void *)GetProcAddress(hInst, "closesocket"); + pgethostname = (void *)GetProcAddress(hInst, "gethostname"); + pgethostbyname = (void *)GetProcAddress(hInst, "gethostbyname"); + pgethostbyaddr = (void *)GetProcAddress(hInst, "gethostbyaddr"); + pgetsockname = (void *)GetProcAddress(hInst, "getsockname"); + + if (!pWSAStartup || !pWSACleanup || !pWSAGetLastError || + !psocket || !pioctlsocket || !psetsockopt || + !precvfrom || !psendto || !pclosesocket || + !pgethostname || !pgethostbyname || !pgethostbyaddr || + !pgetsockname) + { + Con_SafePrintf ("Couldn't GetProcAddress from winsock.dll\n"); + return -1; + } + + if (COM_CheckParm ("-noudp")) + return -1; + + if (winsock_initialized == 0) + { + wVersionRequested = MAKEWORD(1, 1); + + r = pWSAStartup (MAKEWORD(1, 1), &winsockdata); + + if (r) + { + Con_SafePrintf ("Winsock initialization failed.\n"); + return -1; + } + } + winsock_initialized++; + + // determine my name + if (pgethostname(buff, MAXHOSTNAMELEN) == SOCKET_ERROR) + { + Con_DPrintf ("Winsock TCP/IP Initialization failed.\n"); + if (--winsock_initialized == 0) + pWSACleanup (); + return -1; + } + + // if the quake hostname isn't set, set it to the machine name + if (Q_strcmp(hostname.string, "UNNAMED") == 0) + { + // see if it's a text IP address (well, close enough) + for (p = buff; *p; p++) + if ((*p < '0' || *p > '9') && *p != '.') + break; + + // if it is a real name, strip off the domain; we only want the host + if (*p) + { + for (i = 0; i < 15; i++) + if (buff[i] == '.') + break; + buff[i] = 0; + } + Cvar_Set ("hostname", buff); + } + + i = COM_CheckParm ("-ip"); + if (i) + { + if (i < com_argc-1) + { + myAddr = inet_addr(com_argv[i+1]); + if (myAddr == INADDR_NONE) + Sys_Error ("%s is not a valid IP address", com_argv[i+1]); + strcpy(my_tcpip_address, com_argv[i+1]); + } + else + { + Sys_Error ("NET_Init: you must specify an IP address after -ip"); + } + } + else + { + myAddr = INADDR_ANY; + strcpy(my_tcpip_address, "INADDR_ANY"); + } + + if ((net_controlsocket = WINS_OpenSocket (0)) == -1) + { + Con_Printf("WINS_Init: Unable to open control socket\n"); + if (--winsock_initialized == 0) + pWSACleanup (); + return -1; + } + + ((struct sockaddr_in *)&broadcastaddr)->sin_family = AF_INET; + ((struct sockaddr_in *)&broadcastaddr)->sin_addr.s_addr = INADDR_BROADCAST; + ((struct sockaddr_in *)&broadcastaddr)->sin_port = htons((unsigned short)net_hostport); + + Con_Printf("Winsock TCP/IP Initialized\n"); + tcpipAvailable = true; + + return net_controlsocket; +} + +//============================================================================= + +void WINS_Shutdown (void) +{ + WINS_Listen (false); + WINS_CloseSocket (net_controlsocket); + if (--winsock_initialized == 0) + pWSACleanup (); +} + +//============================================================================= + +void WINS_Listen (qboolean state) +{ + // enable listening + if (state) + { + if (net_acceptsocket != -1) + return; + WINS_GetLocalAddress(); + if ((net_acceptsocket = WINS_OpenSocket (net_hostport)) == -1) + Sys_Error ("WINS_Listen: Unable to open accept socket\n"); + return; + } + + // disable listening + if (net_acceptsocket == -1) + return; + WINS_CloseSocket (net_acceptsocket); + net_acceptsocket = -1; +} + +//============================================================================= + +int WINS_OpenSocket (int port) +{ + int newsocket; + struct sockaddr_in address; + u_long _true = 1; + + if ((newsocket = psocket (PF_INET, SOCK_DGRAM, IPPROTO_UDP)) == -1) + return -1; + + if (pioctlsocket (newsocket, FIONBIO, &_true) == -1) + goto ErrorReturn; + + address.sin_family = AF_INET; + address.sin_addr.s_addr = myAddr; + address.sin_port = htons((unsigned short)port); + if( bind (newsocket, (void *)&address, sizeof(address)) == 0) + return newsocket; + + Sys_Error ("Unable to bind to %s", WINS_AddrToString((struct qsockaddr *)&address)); +ErrorReturn: + pclosesocket (newsocket); + return -1; +} + +//============================================================================= + +int WINS_CloseSocket (int socket) +{ + if (socket == net_broadcastsocket) + net_broadcastsocket = 0; + return pclosesocket (socket); +} + + +//============================================================================= +/* +============ +PartialIPAddress + +this lets you type only as much of the net address as required, using +the local network components to fill in the rest +============ +*/ +static int PartialIPAddress (char *in, struct qsockaddr *hostaddr) +{ + char buff[256]; + char *b; + int addr; + int num; + int mask; + int run; + int port; + + buff[0] = '.'; + b = buff; + strcpy(buff+1, in); + if (buff[1] == '.') + b++; + + addr = 0; + mask=-1; + while (*b == '.') + { + b++; + num = 0; + run = 0; + while (!( *b < '0' || *b > '9')) + { + num = num*10 + *b++ - '0'; + if (++run > 3) + return -1; + } + if ((*b < '0' || *b > '9') && *b != '.' && *b != ':' && *b != 0) + return -1; + if (num < 0 || num > 255) + return -1; + mask<<=8; + addr = (addr<<8) + num; + } + + if (*b++ == ':') + port = Q_atoi(b); + else + port = net_hostport; + + hostaddr->sa_family = AF_INET; + ((struct sockaddr_in *)hostaddr)->sin_port = htons((short)port); + ((struct sockaddr_in *)hostaddr)->sin_addr.s_addr = (myAddr & htonl(mask)) | htonl(addr); + + return 0; +} +//============================================================================= + +int WINS_Connect (int socket, struct qsockaddr *addr) +{ + return 0; +} + +//============================================================================= + +int WINS_CheckNewConnections (void) +{ + char buf[4096]; + + if (net_acceptsocket == -1) + return -1; + + if (precvfrom (net_acceptsocket, buf, sizeof(buf), MSG_PEEK, NULL, NULL) > 0) + { + return net_acceptsocket; + } + return -1; +} + +//============================================================================= + +int WINS_Read (int socket, byte *buf, int len, struct qsockaddr *addr) +{ + int addrlen = sizeof (struct qsockaddr); + int ret; + + ret = precvfrom (socket, buf, len, 0, (struct sockaddr *)addr, &addrlen); + if (ret == -1) + { + int errno = pWSAGetLastError(); + + if (errno == WSAEWOULDBLOCK || errno == WSAECONNREFUSED) + return 0; + + } + return ret; +} + +//============================================================================= + +int WINS_MakeSocketBroadcastCapable (int socket) +{ + int i = 1; + + // make this socket broadcast capable + if (psetsockopt(socket, SOL_SOCKET, SO_BROADCAST, (char *)&i, sizeof(i)) < 0) + return -1; + net_broadcastsocket = socket; + + return 0; +} + +//============================================================================= + +int WINS_Broadcast (int socket, byte *buf, int len) +{ + int ret; + + if (socket != net_broadcastsocket) + { + if (net_broadcastsocket != 0) + Sys_Error("Attempted to use multiple broadcasts sockets\n"); + WINS_GetLocalAddress(); + ret = WINS_MakeSocketBroadcastCapable (socket); + if (ret == -1) + { + Con_Printf("Unable to make socket broadcast capable\n"); + return ret; + } + } + + return WINS_Write (socket, buf, len, &broadcastaddr); +} + +//============================================================================= + +int WINS_Write (int socket, byte *buf, int len, struct qsockaddr *addr) +{ + int ret; + + ret = psendto (socket, buf, len, 0, (struct sockaddr *)addr, sizeof(struct qsockaddr)); + if (ret == -1) + if (pWSAGetLastError() == WSAEWOULDBLOCK) + return 0; + + return ret; +} + +//============================================================================= + +char *WINS_AddrToString (struct qsockaddr *addr) +{ + static char buffer[22]; + int haddr; + + haddr = ntohl(((struct sockaddr_in *)addr)->sin_addr.s_addr); + sprintf(buffer, "%d.%d.%d.%d:%d", (haddr >> 24) & 0xff, (haddr >> 16) & 0xff, (haddr >> 8) & 0xff, haddr & 0xff, ntohs(((struct sockaddr_in *)addr)->sin_port)); + return buffer; +} + +//============================================================================= + +int WINS_StringToAddr (char *string, struct qsockaddr *addr) +{ + int ha1, ha2, ha3, ha4, hp; + int ipaddr; + + sscanf(string, "%d.%d.%d.%d:%d", &ha1, &ha2, &ha3, &ha4, &hp); + ipaddr = (ha1 << 24) | (ha2 << 16) | (ha3 << 8) | ha4; + + addr->sa_family = AF_INET; + ((struct sockaddr_in *)addr)->sin_addr.s_addr = htonl(ipaddr); + ((struct sockaddr_in *)addr)->sin_port = htons((unsigned short)hp); + return 0; +} + +//============================================================================= + +int WINS_GetSocketAddr (int socket, struct qsockaddr *addr) +{ + int addrlen = sizeof(struct qsockaddr); + unsigned int a; + + Q_memset(addr, 0, sizeof(struct qsockaddr)); + pgetsockname(socket, (struct sockaddr *)addr, &addrlen); + a = ((struct sockaddr_in *)addr)->sin_addr.s_addr; + if (a == 0 || a == inet_addr("127.0.0.1")) + ((struct sockaddr_in *)addr)->sin_addr.s_addr = myAddr; + + return 0; +} + +//============================================================================= + +int WINS_GetNameFromAddr (struct qsockaddr *addr, char *name) +{ + struct hostent *hostentry; + + hostentry = pgethostbyaddr ((char *)&((struct sockaddr_in *)addr)->sin_addr, sizeof(struct in_addr), AF_INET); + if (hostentry) + { + Q_strncpy (name, (char *)hostentry->h_name, NET_NAMELEN - 1); + return 0; + } + + Q_strcpy (name, WINS_AddrToString (addr)); + return 0; +} + +//============================================================================= + +int WINS_GetAddrFromName(char *name, struct qsockaddr *addr) +{ + struct hostent *hostentry; + + if (name[0] >= '0' && name[0] <= '9') + return PartialIPAddress (name, addr); + + hostentry = pgethostbyname (name); + if (!hostentry) + return -1; + + addr->sa_family = AF_INET; + ((struct sockaddr_in *)addr)->sin_port = htons((unsigned short)net_hostport); + ((struct sockaddr_in *)addr)->sin_addr.s_addr = *(int *)hostentry->h_addr_list[0]; + + return 0; +} + +//============================================================================= + +int WINS_AddrCompare (struct qsockaddr *addr1, struct qsockaddr *addr2) +{ + if (addr1->sa_family != addr2->sa_family) + return -1; + + if (((struct sockaddr_in *)addr1)->sin_addr.s_addr != ((struct sockaddr_in *)addr2)->sin_addr.s_addr) + return -1; + + if (((struct sockaddr_in *)addr1)->sin_port != ((struct sockaddr_in *)addr2)->sin_port) + return 1; + + return 0; +} + +//============================================================================= + +int WINS_GetSocketPort (struct qsockaddr *addr) +{ + return ntohs(((struct sockaddr_in *)addr)->sin_port); +} + + +int WINS_SetSocketPort (struct qsockaddr *addr, int port) +{ + ((struct sockaddr_in *)addr)->sin_port = htons((unsigned short)port); + return 0; +} + +//============================================================================= |