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>
44 #include <arpa/inet.h>
50 const int SOCKET_ERROR = -1;
51 const int INVALID_SOCKET = -1;
53 #define WinError WinPrint
55 #define ioctlsocket ioctl
56 #define closesocket close
58 int WSAGetLastError(){
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 const int DEFAULTnet_hostport = 26000;
82 const int 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 const char *WINS_ErrorMessage( int error ){
119 return "No error occurred";
122 for ( search = 0; errlist[search].errstr; search++ )
124 if ( error == errlist[search].errnum ) {
125 return errlist[search].errstr;
129 return "Unknown error";
130 } //end of the function WINS_ErrorMessage
131 //===========================================================================
135 // Changes Globals: -
136 //===========================================================================
137 int WINS_Init( void ){
139 struct hostent *local;
140 char buff[MAXHOSTNAMELEN];
141 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 );
155 WinPrint( "Winsock initialization failed.\n" );
160 i = COM_CheckParm ("-udpport");
162 net_hostport = DEFAULTnet_hostport;
164 else if (i < com_argc-1)
165 net_hostport = Q_atoi (com_argv[i+1]);
167 Sys_Error ("WINS_Init: you must specify a number after -udpport");
170 // determine my name & address
171 gethostname( buff, MAXHOSTNAMELEN );
172 local = gethostbyname( buff );
173 if(local && local->h_addr_list && local->h_addr_list[0])
174 myAddr = *(int *)local->h_addr_list[0];
176 myAddr = inet_addr("127.0.0.1");
178 // if the quake hostname isn't set, set it to the machine name
179 // if (Q_strcmp(hostname.string, "UNNAMED") == 0)
181 // see if it's a text IP address (well, close enough)
182 for ( p = buff; *p; p++ )
183 if ( ( *p < '0' || *p > '9' ) && *p != '.' ) {
187 // if it is a real name, strip off the domain; we only want the host
189 for ( i = 0; i < 15; i++ )
190 if ( buff[i] == '.' ) {
195 // Cvar_Set ("hostname", buff);
198 //++timo WTF is that net_controlsocket? it's sole purpose is to retrieve the local IP?
199 if ( ( net_controlsocket = WINS_OpenSocket( 0 ) ) == SOCKET_ERROR ) {
200 WinError( "WINS_Init: Unable to open control socket\n" );
203 ( (struct sockaddr_in *)&broadcastaddr )->sin_family = AF_INET;
204 ( (struct sockaddr_in *)&broadcastaddr )->sin_addr.s_addr = INADDR_BROADCAST;
205 ( (struct sockaddr_in *)&broadcastaddr )->sin_port = htons( (u_short)net_hostport );
207 WINS_GetSocketAddr( net_controlsocket, &addr );
208 strcpy( my_tcpip_address, WINS_AddrToString( &addr ) );
209 p = strrchr( my_tcpip_address, ':' );
213 WinPrint( "Winsock Initialized\n" );
215 return net_controlsocket;
216 } //end of the function WINS_Init
217 //===========================================================================
221 // Changes Globals: -
222 //===========================================================================
223 char *WINS_MyAddress( void ){
224 return my_tcpip_address;
225 } //end of the function WINS_MyAddress
226 //===========================================================================
230 // Changes Globals: -
231 //===========================================================================
232 void WINS_Shutdown( void ){
234 WINS_CloseSocket( net_controlsocket );
237 //WinPrint("Winsock Shutdown\n");
238 } //end of the function WINS_Shutdown
239 //===========================================================================
243 // Changes Globals: -
244 //===========================================================================
246 void WINS_Listen(int state)
251 if (net_acceptsocket != -1)
253 if ((net_acceptsocket = WINS_OpenSocket (net_hostport)) == -1)
254 WinError ("WINS_Listen: Unable to open accept socket\n");
259 if (net_acceptsocket == -1)
261 WINS_CloseSocket (net_acceptsocket);
262 net_acceptsocket = -1;
263 } //end of the function WINS_Listen*/
264 //===========================================================================
268 // Changes Globals: -
269 //===========================================================================
270 int WINS_OpenSocket( int port ){
272 struct sockaddr_in address;
275 if ( ( newsocket = socket( PF_INET, SOCK_DGRAM, IPPROTO_UDP ) ) == SOCKET_ERROR ) {
276 WinPrint( "WINS_OpenSocket: %s\n", WINS_ErrorMessage( WSAGetLastError() ) );
280 if ( ioctlsocket( newsocket, FIONBIO, &_true ) == SOCKET_ERROR ) {
281 WinPrint( "WINS_OpenSocket: %s\n", WINS_ErrorMessage( WSAGetLastError() ) );
282 closesocket( newsocket );
286 memset( (char *) &address, 0, sizeof( address ) );
287 address.sin_family = AF_INET;
288 address.sin_addr.s_addr = INADDR_ANY;
289 address.sin_port = htons( (u_short)port );
290 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 ){
306 struct sockaddr_in address;
307 qboolean _true = 0xFFFFFFFF;
311 if ( ( newsocket = socket( AF_INET, SOCK_STREAM, 0 ) ) == -1 ) {
312 WinPrint( "WINS_OpenReliableSocket: %s\n", WINS_ErrorMessage( WSAGetLastError() ) );
316 memset( (char *) &address, 0, sizeof( address ) );
317 address.sin_family = AF_INET;
318 address.sin_addr.s_addr = htonl( INADDR_ANY );
319 address.sin_port = htons( (u_short)port );
320 if ( bind( newsocket, (void *)&address, sizeof( address ) ) == -1 ) {
321 WinPrint( "WINS_OpenReliableSocket: %s\n", WINS_ErrorMessage( WSAGetLastError() ) );
322 closesocket( newsocket );
327 if ( setsockopt( newsocket, IPPROTO_TCP, TCP_NODELAY, (void *) &_true, sizeof( int ) ) == -1 ) {
328 WinPrint( "WINS_OpenReliableSocket: %s\n", WINS_ErrorMessage( WSAGetLastError() ) );
329 WinPrint( "setsockopt error\n" );
333 } //end of the function WINS_OpenReliableSocket
334 //===========================================================================
338 // Changes Globals: -
339 //===========================================================================
340 int WINS_Listen( int socket ){
343 if ( ioctlsocket( socket, FIONBIO, &_true ) == -1 ) {
344 WinPrint( "WINS_Listen: %s\n", WINS_ErrorMessage( WSAGetLastError() ) );
347 if ( listen( socket, SOMAXCONN ) == SOCKET_ERROR ) {
348 WinPrint( "WINS_Listen: %s\n", WINS_ErrorMessage( WSAGetLastError() ) );
352 } //end of the function WINS_Listen
353 //===========================================================================
357 // Changes Globals: -
358 //===========================================================================
359 int WINS_Accept( int socket, struct sockaddr_s *addr ){
360 socklen_t addrlen = sizeof( struct sockaddr_s );
364 newsocket = accept( socket, (struct sockaddr *)addr, &addrlen );
365 if ( newsocket == INVALID_SOCKET ) {
366 if ( errno == EAGAIN ) {
369 WinPrint( "WINS_Accept: %s\n", WINS_ErrorMessage( WSAGetLastError() ) );
373 if ( setsockopt( newsocket, IPPROTO_TCP, TCP_NODELAY, (void *) &_true, sizeof( int ) ) == SOCKET_ERROR ) {
374 WinPrint( "WINS_Accept: %s\n", WINS_ErrorMessage( WSAGetLastError() ) );
375 WinPrint( "setsockopt error\n" );
378 } //end of the function WINS_Accept
379 //===========================================================================
383 // Changes Globals: -
384 //===========================================================================
385 int WINS_CloseSocket( int socket ){
387 if (socket == net_broadcastsocket)
388 net_broadcastsocket = 0;
390 // shutdown(socket, SD_SEND);
392 if ( closesocket( socket ) == SOCKET_ERROR ) {
393 WinPrint( "WINS_CloseSocket: %s\n", WINS_ErrorMessage( WSAGetLastError() ) );
397 } //end of the function WINS_CloseSocket
398 //===========================================================================
399 // this lets you type only as much of the net address as required, using
400 // the local network components to fill in the rest
404 // Changes Globals: -
405 //===========================================================================
406 static int PartialIPAddress( char *in, struct sockaddr_s *hostaddr ){
415 strcpy( buff + 1, in );
416 if ( buff[1] == '.' ) {
425 if ( *++b < '0' || *b > '9' ) {
428 while ( !( *b < '0' || *b > '9' ) )
429 num = num * 10 + *( b++ ) - '0';
431 addr = ( addr << 8 ) + num;
434 hostaddr->sa_family = AF_INET;
435 ( (struct sockaddr_in *)hostaddr )->sin_port = htons( (u_short)net_hostport );
436 ( (struct sockaddr_in *)hostaddr )->sin_addr.s_addr = ( myAddr & htonl( mask ) ) | htonl( addr );
439 } //end of the function PartialIPAddress
440 //===========================================================================
444 // Changes Globals: -
445 //===========================================================================
446 int WINS_Connect( int socket, struct sockaddr_s *addr ){
448 u_long _true2 = 0xFFFFFFFF;
450 ret = connect( socket, (struct sockaddr *)addr, sizeof( struct sockaddr_s ) );
451 if ( ret == SOCKET_ERROR ) {
452 WinPrint( "WINS_Connect: %s\n", WINS_ErrorMessage( WSAGetLastError() ) );
455 if ( ioctlsocket( socket, FIONBIO, &_true2 ) == -1 ) {
456 WinPrint( "WINS_Connect: %s\n", WINS_ErrorMessage( WSAGetLastError() ) );
460 } //end of the function WINS_Connect
461 //===========================================================================
465 // Changes Globals: -
466 //===========================================================================
467 int WINS_CheckNewConnections( void ){
470 if ( net_acceptsocket == -1 ) {
474 if ( recvfrom( net_acceptsocket, buf, 4, MSG_PEEK, NULL, NULL ) > 0 ) {
475 return net_acceptsocket;
478 } //end of the function WINS_CheckNewConnections
479 //===========================================================================
480 // returns the number of bytes read
481 // 0 if no bytes available
486 // Changes Globals: -
487 //===========================================================================
488 int WINS_Read( int socket, byte *buf, int len, struct sockaddr_s *addr ){
489 socklen_t addrlen = sizeof( struct sockaddr_s );
493 ret = recvfrom( socket, buf, len, 0, (struct sockaddr *)addr, &addrlen );
495 // errno = WSAGetLastError();
497 if ( errno == EAGAIN || errno == ENOTCONN ) {
504 ret = recv( socket, buf, len, 0 );
505 // if there's no data on the socket ret == -1 and errno == EAGAIN
506 // MSDN states that if ret == 0 the socket has been closed
507 // man recv doesn't say anything
511 if ( ret == SOCKET_ERROR ) {
512 // errno = WSAGetLastError();
514 if ( errno == EAGAIN || errno == ENOTCONN ) {
519 if ( ret == SOCKET_ERROR ) {
520 WinPrint( "WINS_Read: %s\n", WINS_ErrorMessage( WSAGetLastError() ) );
523 } //end of the function WINS_Read
524 //===========================================================================
528 // Changes Globals: -
529 //===========================================================================
530 int WINS_MakeSocketBroadcastCapable( int socket ){
533 // make this socket broadcast capable
534 if ( setsockopt( socket, SOL_SOCKET, SO_BROADCAST, (char *)&i, sizeof( i ) ) < 0 ) {
537 net_broadcastsocket = socket;
540 } //end of the function WINS_MakeSocketBroadcastCapable
541 //===========================================================================
545 // Changes Globals: -
546 //===========================================================================
547 int WINS_Broadcast( int socket, byte *buf, int len ){
550 if ( socket != net_broadcastsocket ) {
551 if ( net_broadcastsocket != 0 ) {
552 WinError( "Attempted to use multiple broadcasts sockets\n" );
554 ret = WINS_MakeSocketBroadcastCapable( socket );
556 WinPrint( "Unable to make socket broadcast capable\n" );
561 return WINS_Write( socket, buf, len, &broadcastaddr );
562 } //end of the function WINS_Broadcast
563 //===========================================================================
564 // returns qtrue on success or qfalse on failure
568 // Changes Globals: -
569 //===========================================================================
570 int WINS_Write( int socket, byte *buf, int len, struct sockaddr_s *addr ){
576 while ( written < len )
578 ret = sendto( socket, &buf[written], len - written, 0, (struct sockaddr *)addr, sizeof( struct sockaddr_s ) );
579 if ( ret == SOCKET_ERROR ) {
580 if ( WSAGetLastError() != EAGAIN ) {
583 //++timo FIXME: what is this used for?
595 while ( written < len )
597 ret = send( socket, buf, len, 0 );
598 if ( ret == SOCKET_ERROR ) {
599 if ( WSAGetLastError() != EAGAIN ) {
602 //++timo FIXME: what is this used for?
611 if ( ret == SOCKET_ERROR ) {
612 WinPrint( "WINS_Write: %s\n", WINS_ErrorMessage( WSAGetLastError() ) );
614 return ( ret == len );
615 } //end of the function WINS_Write
616 //===========================================================================
620 // Changes Globals: -
621 //===========================================================================
622 char *WINS_AddrToString( struct sockaddr_s *addr ){
623 static char buffer[22];
626 haddr = ntohl( ( (struct sockaddr_in *)addr )->sin_addr.s_addr );
627 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 ) );
629 } //end of the function WINS_AddrToString
630 //===========================================================================
634 // Changes Globals: -
635 //===========================================================================
636 int WINS_StringToAddr( char *string, struct sockaddr_s *addr ){
637 int ha1, ha2, ha3, ha4, hp;
640 sscanf( string, "%d.%d.%d.%d:%d", &ha1, &ha2, &ha3, &ha4, &hp );
641 ipaddr = ( ha1 << 24 ) | ( ha2 << 16 ) | ( ha3 << 8 ) | ha4;
643 addr->sa_family = AF_INET;
644 ( (struct sockaddr_in *)addr )->sin_addr.s_addr = htonl( ipaddr );
645 ( (struct sockaddr_in *)addr )->sin_port = htons( (u_short)hp );
647 } //end of the function WINS_StringToAddr
648 //===========================================================================
652 // Changes Globals: -
653 //===========================================================================
654 int WINS_GetSocketAddr( int socket, struct sockaddr_s *addr ){
655 socklen_t addrlen = sizeof( struct sockaddr_s );
658 memset( addr, 0, sizeof( struct sockaddr_s ) );
659 getsockname( socket, (struct sockaddr *)addr, &addrlen );
660 a = ( (struct sockaddr_in *)addr )->sin_addr.s_addr;
661 if ( a == 0 || a == inet_addr( "127.0.0.1" ) ) {
662 ( (struct sockaddr_in *)addr )->sin_addr.s_addr = myAddr;
666 } //end of the function WINS_GetSocketAddr
667 //===========================================================================
671 // Changes Globals: -
672 //===========================================================================
673 int WINS_GetNameFromAddr( struct sockaddr_s *addr, char *name ){
674 struct hostent *hostentry;
676 hostentry = gethostbyaddr( (char *)&( (struct sockaddr_in *)addr )->sin_addr, sizeof( struct in_addr ), AF_INET );
678 strncpy( name, (char *)hostentry->h_name, NET_NAMELEN - 1 );
682 strcpy( name, WINS_AddrToString( addr ) );
684 } //end of the function WINS_GetNameFromAddr
685 //===========================================================================
689 // Changes Globals: -
690 //===========================================================================
691 int WINS_GetAddrFromName( char *name, struct sockaddr_s *addr ){
692 struct hostent *hostentry;
694 if ( name[0] >= '0' && name[0] <= '9' ) {
695 return PartialIPAddress( name, addr );
698 hostentry = gethostbyname( name );
703 addr->sa_family = AF_INET;
704 ( (struct sockaddr_in *)addr )->sin_port = htons( (u_short)net_hostport );
705 ( (struct sockaddr_in *)addr )->sin_addr.s_addr = *(int *)hostentry->h_addr_list[0];
708 } //end of the function WINS_GetAddrFromName
709 //===========================================================================
713 // Changes Globals: -
714 //===========================================================================
715 int WINS_AddrCompare( struct sockaddr_s *addr1, struct sockaddr_s *addr2 ){
716 if ( addr1->sa_family != addr2->sa_family ) {
720 if ( ( (struct sockaddr_in *)addr1 )->sin_addr.s_addr != ( (struct sockaddr_in *)addr2 )->sin_addr.s_addr ) {
724 if ( ( (struct sockaddr_in *)addr1 )->sin_port != ( (struct sockaddr_in *)addr2 )->sin_port ) {
729 } //end of the function WINS_AddrCompare
730 //===========================================================================
734 // Changes Globals: -
735 //===========================================================================
736 int WINS_GetSocketPort( struct sockaddr_s *addr ){
737 return ntohs( ( (struct sockaddr_in *)addr )->sin_port );
738 } //end of the function WINS_GetSocketPort
739 //===========================================================================
743 // Changes Globals: -
744 //===========================================================================
745 int WINS_SetSocketPort( struct sockaddr_s *addr, int port ){
746 ( (struct sockaddr_in *)addr )->sin_port = htons( (u_short)port );
748 } //end of the function WINS_SetSocketPort