2 Copyright (C) 1999-2006 Id Software, Inc. and contributors.
3 For a list of contributors, see the accompanying CONTRIBUTORS file.
5 This file is part of GtkRadiant.
7 GtkRadiant is free software; you can redistribute it and/or modify
8 it under the terms of the GNU General Public License as published by
9 the Free Software Foundation; either version 2 of the License, or
10 (at your option) any later version.
12 GtkRadiant is distributed in the hope that it will be useful,
13 but WITHOUT ANY WARRANTY; without even the implied warranty of
14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 GNU General Public License for more details.
17 You should have received a copy of the GNU General Public License
18 along with GtkRadiant; if not, write to the Free Software
19 Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
22 //===========================================================================
26 // Programmer: MrElusive
27 // Last update: TTimo: cross-platform version, l_net library
30 //===========================================================================
32 //#include <windows.h>
37 #include "l_net_wins.h"
39 #include <sys/types.h>
40 #include <sys/socket.h>
41 #include <sys/ioctl.h>
42 #include <netinet/in.h>
43 #include <netinet/tcp.h>
46 #define SOCKET_ERROR -1
47 #define INVALID_SOCKET -1
49 #define WinError WinPrint
54 #define ioctlsocket ioctl
55 #define closesocket close
63 typedef struct tag_error_struct
70 typedef struct tag_error_struct
76 #define NET_NAMELEN 64
78 static char my_tcpip_address[NET_NAMELEN];
80 #define DEFAULTnet_hostport 26000
82 #define MAXHOSTNAMELEN 256
84 static int net_acceptsocket = -1; // socket for fielding new connections
85 static int net_controlsocket;
86 static int net_hostport; // udp port number for acceptsocket
87 static int net_broadcastsocket = 0;
88 //static qboolean ifbcastinit = qfalse;
89 //static struct sockaddr_s broadcastaddr;
90 static struct sockaddr_s broadcastaddr;
92 static unsigned long myAddr;
94 ERROR_STRUCT errlist[] = {
95 {EACCES,"EACCES - The address is protected, user is not root"},
96 {EAGAIN,"EAGAIN - Operation on non-blocking socket that cannot return immediatly"},
97 {EBADF, "EBADF - sockfd is not a valid descriptor"},
98 {EFAULT, "EFAULT - The parameter is not in a writable part of the user address space"},
99 {EINVAL,"EINVAL - The socket is already bound to an address"},
100 {ENOBUFS,"ENOBUFS - not enough memory"},
101 {ENOMEM, "ENOMEM - not enough memory"},
102 {ENOTCONN, "ENOTCONN - not connected"},
103 {ENOTSOCK,"ENOTSOCK - Argument is file descriptor not a socket"},
104 {EOPNOTSUPP,"ENOTSUPP - The referenced socket is not of type SOCK_STREAM"},
105 {EPERM, "EPERM - Firewall rules forbid connection"},
109 //===========================================================================
113 // Changes Globals: -
114 //===========================================================================
115 char *WINS_ErrorMessage(int error)
119 if (!error) return "No error occurred";
121 for (search = 0; errlist[search].errstr; search++)
123 if (error == errlist[search].errnum)
124 return (char *)errlist[search].errstr;
127 return "Unknown error";
128 } //end of the function WINS_ErrorMessage
129 //===========================================================================
133 // Changes Globals: -
134 //===========================================================================
138 struct hostent *local;
139 char buff[MAXHOSTNAMELEN];
140 struct sockaddr_s addr;
144 linux doesn't have anything to initialize for the net
145 "Windows .. built for the internet .. the internet .. built with unix"
148 WORD wVersionRequested;
150 wVersionRequested = MAKEWORD(2, 2);
152 r = WSAStartup (wVersionRequested, &winsockdata);
156 WinPrint("Winsock initialization failed.\n");
161 i = COM_CheckParm ("-udpport");
163 net_hostport = DEFAULTnet_hostport;
165 else if (i < com_argc-1)
166 net_hostport = Q_atoi (com_argv[i+1]);
168 Sys_Error ("WINS_Init: you must specify a number after -udpport");
171 // determine my name & address
172 gethostname(buff, MAXHOSTNAMELEN);
173 local = gethostbyname(buff);
174 myAddr = *(int *)local->h_addr_list[0];
176 // if the quake hostname isn't set, set it to the machine name
177 // if (Q_strcmp(hostname.string, "UNNAMED") == 0)
179 // see if it's a text IP address (well, close enough)
180 for (p = buff; *p; p++)
181 if ((*p < '0' || *p > '9') && *p != '.')
184 // if it is a real name, strip off the domain; we only want the host
187 for (i = 0; i < 15; i++)
192 // Cvar_Set ("hostname", buff);
195 //++timo WTF is that net_controlsocket? it's sole purpose is to retrieve the local IP?
196 if ((net_controlsocket = WINS_OpenSocket (0)) == SOCKET_ERROR)
197 WinError("WINS_Init: Unable to open control socket\n");
199 ((struct sockaddr_in *)&broadcastaddr)->sin_family = AF_INET;
200 ((struct sockaddr_in *)&broadcastaddr)->sin_addr.s_addr = INADDR_BROADCAST;
201 ((struct sockaddr_in *)&broadcastaddr)->sin_port = htons((u_short)net_hostport);
203 WINS_GetSocketAddr (net_controlsocket, &addr);
204 strcpy(my_tcpip_address, WINS_AddrToString (&addr));
205 p = strrchr (my_tcpip_address, ':');
207 WinPrint("Winsock Initialized\n");
209 return net_controlsocket;
210 } //end of the function WINS_Init
211 //===========================================================================
215 // Changes Globals: -
216 //===========================================================================
217 char *WINS_MyAddress(void)
219 return my_tcpip_address;
220 } //end of the function WINS_MyAddress
221 //===========================================================================
225 // Changes Globals: -
226 //===========================================================================
227 void WINS_Shutdown(void)
230 WINS_CloseSocket(net_controlsocket);
233 //WinPrint("Winsock Shutdown\n");
234 } //end of the function WINS_Shutdown
235 //===========================================================================
239 // Changes Globals: -
240 //===========================================================================
242 void WINS_Listen(int state)
247 if (net_acceptsocket != -1)
249 if ((net_acceptsocket = WINS_OpenSocket (net_hostport)) == -1)
250 WinError ("WINS_Listen: Unable to open accept socket\n");
255 if (net_acceptsocket == -1)
257 WINS_CloseSocket (net_acceptsocket);
258 net_acceptsocket = -1;
259 } //end of the function WINS_Listen*/
260 //===========================================================================
264 // Changes Globals: -
265 //===========================================================================
266 int WINS_OpenSocket(int port)
269 struct sockaddr_in address;
272 if ((newsocket = socket (PF_INET, SOCK_DGRAM, IPPROTO_UDP)) == SOCKET_ERROR)
274 WinPrint("WINS_OpenSocket: %s\n", WINS_ErrorMessage(WSAGetLastError()));
278 if (ioctlsocket (newsocket, FIONBIO, &_true) == SOCKET_ERROR)
280 WinPrint("WINS_OpenSocket: %s\n", WINS_ErrorMessage(WSAGetLastError()));
281 closesocket(newsocket);
285 memset((char *) &address, 0, sizeof(address));
286 address.sin_family = AF_INET;
287 address.sin_addr.s_addr = INADDR_ANY;
288 address.sin_port = htons((u_short)port);
289 if( bind (newsocket, (void *)&address, sizeof(address)) == -1)
291 WinPrint("WINS_OpenSocket: %s\n", WINS_ErrorMessage(WSAGetLastError()));
292 closesocket(newsocket);
297 } //end of the function WINS_OpenSocket
298 //===========================================================================
302 // Changes Globals: -
303 //===========================================================================
304 int WINS_OpenReliableSocket(int port)
307 struct sockaddr_in address;
308 qboolean _true = 0xFFFFFFFF;
312 if ((newsocket = socket(AF_INET, SOCK_STREAM, 0)) == -1)
314 WinPrint("WINS_OpenReliableSocket: %s\n", WINS_ErrorMessage(WSAGetLastError()));
318 memset((char *) &address, 0, sizeof(address));
319 address.sin_family = AF_INET;
320 address.sin_addr.s_addr = htonl(INADDR_ANY);
321 address.sin_port = htons((u_short)port);
322 if (bind(newsocket, (void *)&address, sizeof(address)) == -1)
324 WinPrint("WINS_OpenReliableSocket: %s\n", WINS_ErrorMessage(WSAGetLastError()));
325 closesocket(newsocket);
330 if (setsockopt(newsocket, IPPROTO_TCP, TCP_NODELAY, (void *) &_true, sizeof(int)) == -1)
332 WinPrint("WINS_OpenReliableSocket: %s\n", WINS_ErrorMessage(WSAGetLastError()));
333 WinPrint("setsockopt error\n");
337 } //end of the function WINS_OpenReliableSocket
338 //===========================================================================
342 // Changes Globals: -
343 //===========================================================================
344 int WINS_Listen(int socket)
348 if (ioctlsocket(socket, FIONBIO, &_true) == -1)
350 WinPrint("WINS_Listen: %s\n", WINS_ErrorMessage(WSAGetLastError()));
353 if (listen(socket, SOMAXCONN) == SOCKET_ERROR)
355 WinPrint("WINS_Listen: %s\n", WINS_ErrorMessage(WSAGetLastError()));
359 } //end of the function WINS_Listen
360 //===========================================================================
364 // Changes Globals: -
365 //===========================================================================
366 int WINS_Accept(int socket, struct sockaddr_s *addr)
368 int addrlen = sizeof (struct sockaddr_s);
372 newsocket = accept(socket, (struct sockaddr *)addr, &addrlen);
373 if (newsocket == INVALID_SOCKET)
375 if (errno == EAGAIN) return -1;
376 WinPrint("WINS_Accept: %s\n", WINS_ErrorMessage(WSAGetLastError()));
380 if (setsockopt(newsocket, IPPROTO_TCP, TCP_NODELAY, (void *) &_true, sizeof(int)) == SOCKET_ERROR)
382 WinPrint("WINS_Accept: %s\n", WINS_ErrorMessage(WSAGetLastError()));
383 WinPrint("setsockopt error\n");
386 } //end of the function WINS_Accept
387 //===========================================================================
391 // Changes Globals: -
392 //===========================================================================
393 int WINS_CloseSocket(int socket)
396 if (socket == net_broadcastsocket)
397 net_broadcastsocket = 0;
399 // shutdown(socket, SD_SEND);
401 if (closesocket(socket) == SOCKET_ERROR)
403 WinPrint("WINS_CloseSocket: %s\n", WINS_ErrorMessage(WSAGetLastError()));
407 } //end of the function WINS_CloseSocket
408 //===========================================================================
409 // this lets you type only as much of the net address as required, using
410 // the local network components to fill in the rest
414 // Changes Globals: -
415 //===========================================================================
416 static int PartialIPAddress (char *in, struct sockaddr_s *hostaddr)
427 if (buff[1] == '.') b++;
434 if (*++b < '0' || *b > '9') return -1;
435 while (!( *b < '0' || *b > '9'))
436 num = num*10 + *(b++) - '0';
438 addr = (addr<<8) + num;
441 hostaddr->sa_family = AF_INET;
442 ((struct sockaddr_in *)hostaddr)->sin_port = htons((u_short)net_hostport);
443 ((struct sockaddr_in *)hostaddr)->sin_addr.s_addr = (myAddr & htonl(mask)) | htonl(addr);
446 } //end of the function PartialIPAddress
447 //===========================================================================
451 // Changes Globals: -
452 //===========================================================================
453 int WINS_Connect(int socket, struct sockaddr_s *addr)
456 u_long _true2 = 0xFFFFFFFF;
458 ret = connect(socket, (struct sockaddr *)addr, sizeof(struct sockaddr_s));
459 if (ret == SOCKET_ERROR)
461 WinPrint("WINS_Connect: %s\n", WINS_ErrorMessage(WSAGetLastError()));
464 if (ioctlsocket(socket, FIONBIO, &_true2) == -1)
466 WinPrint("WINS_Connect: %s\n", WINS_ErrorMessage(WSAGetLastError()));
470 } //end of the function WINS_Connect
471 //===========================================================================
475 // Changes Globals: -
476 //===========================================================================
477 int WINS_CheckNewConnections(void)
481 if (net_acceptsocket == -1)
484 if (recvfrom(net_acceptsocket, buf, 4, MSG_PEEK, NULL, NULL) > 0)
485 return net_acceptsocket;
487 } //end of the function WINS_CheckNewConnections
488 //===========================================================================
489 // returns the number of bytes read
490 // 0 if no bytes available
495 // Changes Globals: -
496 //===========================================================================
497 int WINS_Read(int socket, byte *buf, int len, struct sockaddr_s *addr)
499 int addrlen = sizeof (struct sockaddr_s);
504 ret = recvfrom(socket, buf, len, 0, (struct sockaddr *)addr, &addrlen);
507 // errno = WSAGetLastError();
509 if (errno == EAGAIN || errno == ENOTCONN)
515 ret = recv(socket, buf, len, 0);
516 // if there's no data on the socket ret == -1 and errno == EAGAIN
517 // MSDN states that if ret == 0 the socket has been closed
518 // man recv doesn't say anything
521 if (ret == SOCKET_ERROR)
523 // errno = WSAGetLastError();
525 if (errno == EAGAIN || errno == ENOTCONN)
529 if (ret == SOCKET_ERROR)
531 WinPrint("WINS_Read: %s\n", WINS_ErrorMessage(WSAGetLastError()));
534 } //end of the function WINS_Read
535 //===========================================================================
539 // Changes Globals: -
540 //===========================================================================
541 int WINS_MakeSocketBroadcastCapable (int socket)
545 // make this socket broadcast capable
546 if (setsockopt(socket, SOL_SOCKET, SO_BROADCAST, (char *)&i, sizeof(i)) < 0)
548 net_broadcastsocket = socket;
551 } //end of the function WINS_MakeSocketBroadcastCapable
552 //===========================================================================
556 // Changes Globals: -
557 //===========================================================================
558 int WINS_Broadcast (int socket, byte *buf, int len)
562 if (socket != net_broadcastsocket)
564 if (net_broadcastsocket != 0)
565 WinError("Attempted to use multiple broadcasts sockets\n");
566 ret = WINS_MakeSocketBroadcastCapable (socket);
569 WinPrint("Unable to make socket broadcast capable\n");
574 return WINS_Write (socket, buf, len, &broadcastaddr);
575 } //end of the function WINS_Broadcast
576 //===========================================================================
577 // returns qtrue on success or qfalse on failure
581 // Changes Globals: -
582 //===========================================================================
583 int WINS_Write(int socket, byte *buf, int len, struct sockaddr_s *addr)
592 ret = sendto (socket, &buf[written], len-written, 0, (struct sockaddr *)addr, sizeof(struct sockaddr_s));
593 if (ret == SOCKET_ERROR)
595 if (WSAGetLastError() != EAGAIN)
597 //++timo FIXME: what is this used for?
611 ret = send(socket, buf, len, 0);
612 if (ret == SOCKET_ERROR)
614 if (WSAGetLastError() != EAGAIN)
616 //++timo FIXME: what is this used for?
625 if (ret == SOCKET_ERROR)
627 WinPrint("WINS_Write: %s\n", WINS_ErrorMessage(WSAGetLastError()));
630 } //end of the function WINS_Write
631 //===========================================================================
635 // Changes Globals: -
636 //===========================================================================
637 char *WINS_AddrToString (struct sockaddr_s *addr)
639 static char buffer[22];
642 haddr = ntohl(((struct sockaddr_in *)addr)->sin_addr.s_addr);
643 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));
645 } //end of the function WINS_AddrToString
646 //===========================================================================
650 // Changes Globals: -
651 //===========================================================================
652 int WINS_StringToAddr(char *string, struct sockaddr_s *addr)
654 int ha1, ha2, ha3, ha4, hp;
657 sscanf(string, "%d.%d.%d.%d:%d", &ha1, &ha2, &ha3, &ha4, &hp);
658 ipaddr = (ha1 << 24) | (ha2 << 16) | (ha3 << 8) | ha4;
660 addr->sa_family = AF_INET;
661 ((struct sockaddr_in *)addr)->sin_addr.s_addr = htonl(ipaddr);
662 ((struct sockaddr_in *)addr)->sin_port = htons((u_short)hp);
664 } //end of the function WINS_StringToAddr
665 //===========================================================================
669 // Changes Globals: -
670 //===========================================================================
671 int WINS_GetSocketAddr(int socket, struct sockaddr_s *addr)
673 int addrlen = sizeof(struct sockaddr_s);
676 memset(addr, 0, sizeof(struct sockaddr_s));
677 getsockname(socket, (struct sockaddr *)addr, &addrlen);
678 a = ((struct sockaddr_in *)addr)->sin_addr.s_addr;
679 if (a == 0 || a == inet_addr("127.0.0.1"))
680 ((struct sockaddr_in *)addr)->sin_addr.s_addr = myAddr;
683 } //end of the function WINS_GetSocketAddr
684 //===========================================================================
688 // Changes Globals: -
689 //===========================================================================
690 int WINS_GetNameFromAddr (struct sockaddr_s *addr, char *name)
692 struct hostent *hostentry;
694 hostentry = gethostbyaddr ((char *)&((struct sockaddr_in *)addr)->sin_addr, sizeof(struct in_addr), AF_INET);
697 strncpy (name, (char *)hostentry->h_name, NET_NAMELEN - 1);
701 strcpy (name, WINS_AddrToString (addr));
703 } //end of the function WINS_GetNameFromAddr
704 //===========================================================================
708 // Changes Globals: -
709 //===========================================================================
710 int WINS_GetAddrFromName(char *name, struct sockaddr_s *addr)
712 struct hostent *hostentry;
714 if (name[0] >= '0' && name[0] <= '9')
715 return PartialIPAddress (name, addr);
717 hostentry = gethostbyname (name);
721 addr->sa_family = AF_INET;
722 ((struct sockaddr_in *)addr)->sin_port = htons((u_short)net_hostport);
723 ((struct sockaddr_in *)addr)->sin_addr.s_addr = *(int *)hostentry->h_addr_list[0];
726 } //end of the function WINS_GetAddrFromName
727 //===========================================================================
731 // Changes Globals: -
732 //===========================================================================
733 int WINS_AddrCompare (struct sockaddr_s *addr1, struct sockaddr_s *addr2)
735 if (addr1->sa_family != addr2->sa_family)
738 if (((struct sockaddr_in *)addr1)->sin_addr.s_addr != ((struct sockaddr_in *)addr2)->sin_addr.s_addr)
741 if (((struct sockaddr_in *)addr1)->sin_port != ((struct sockaddr_in *)addr2)->sin_port)
745 } //end of the function WINS_AddrCompare
746 //===========================================================================
750 // Changes Globals: -
751 //===========================================================================
752 int WINS_GetSocketPort (struct sockaddr_s *addr)
754 return ntohs(((struct sockaddr_in *)addr)->sin_port);
755 } //end of the function WINS_GetSocketPort
756 //===========================================================================
760 // Changes Globals: -
761 //===========================================================================
762 int WINS_SetSocketPort (struct sockaddr_s *addr, int port)
764 ((struct sockaddr_in *)addr)->sin_port = htons((u_short)port);
766 } //end of the function WINS_SetSocketPort