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1/*
2Copyright (C) 1996-1997 Id Software, Inc.
3
4This program is free software; you can redistribute it and/or
5modify it under the terms of the GNU General Public License
6as published by the Free Software Foundation; either version 2
7of the License, or (at your option) any later version.
8
9This program is distributed in the hope that it will be useful,
10but WITHOUT ANY WARRANTY; without even the implied warranty of
11MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
12
13See the GNU General Public License for more details.
14
15You should have received a copy of the GNU General Public License
16along with this program; if not, write to the Free Software
17Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
18
19*/
20// net.h -- quake's interface to the networking layer
21
22struct qsockaddr
23{
24 short sa_family;
25 unsigned char sa_data[14];
26};
27
28
29#define NET_NAMELEN 64
30
31#define NET_MAXMESSAGE 8192
32#define NET_HEADERSIZE (2 * sizeof(unsigned int))
33#define NET_DATAGRAMSIZE (MAX_DATAGRAM + NET_HEADERSIZE)
34
35// NetHeader flags
36#define NETFLAG_LENGTH_MASK 0x0000ffff
37#define NETFLAG_DATA 0x00010000
38#define NETFLAG_ACK 0x00020000
39#define NETFLAG_NAK 0x00040000
40#define NETFLAG_EOM 0x00080000
41#define NETFLAG_UNRELIABLE 0x00100000
42#define NETFLAG_CTL 0x80000000
43
44
45#define NET_PROTOCOL_VERSION 3
46
47// This is the network info/connection protocol. It is used to find Quake
48// servers, get info about them, and connect to them. Once connected, the
49// Quake game protocol (documented elsewhere) is used.
50//
51//
52// General notes:
53// game_name is currently always "QUAKE", but is there so this same protocol
54// can be used for future games as well; can you say Quake2?
55//
56// CCREQ_CONNECT
57// string game_name "QUAKE"
58// byte net_protocol_version NET_PROTOCOL_VERSION
59//
60// CCREQ_SERVER_INFO
61// string game_name "QUAKE"
62// byte net_protocol_version NET_PROTOCOL_VERSION
63//
64// CCREQ_PLAYER_INFO
65// byte player_number
66//
67// CCREQ_RULE_INFO
68// string rule
69//
70//
71//
72// CCREP_ACCEPT
73// long port
74//
75// CCREP_REJECT
76// string reason
77//
78// CCREP_SERVER_INFO
79// string server_address
80// string host_name
81// string level_name
82// byte current_players
83// byte max_players
84// byte protocol_version NET_PROTOCOL_VERSION
85//
86// CCREP_PLAYER_INFO
87// byte player_number
88// string name
89// long colors
90// long frags
91// long connect_time
92// string address
93//
94// CCREP_RULE_INFO
95// string rule
96// string value
97
98// note:
99// There are two address forms used above. The short form is just a
100// port number. The address that goes along with the port is defined as
101// "whatever address you receive this reponse from". This lets us use
102// the host OS to solve the problem of multiple host addresses (possibly
103// with no routing between them); the host will use the right address
104// when we reply to the inbound connection request. The long from is
105// a full address and port in a string. It is used for returning the
106// address of a server that is not running locally.
107
108#define CCREQ_CONNECT 0x01
109#define CCREQ_SERVER_INFO 0x02
110#define CCREQ_PLAYER_INFO 0x03
111#define CCREQ_RULE_INFO 0x04
112
113#define CCREP_ACCEPT 0x81
114#define CCREP_REJECT 0x82
115#define CCREP_SERVER_INFO 0x83
116#define CCREP_PLAYER_INFO 0x84
117#define CCREP_RULE_INFO 0x85
118
119typedef struct qsocket_s
120{
121 struct qsocket_s *next;
122 double connecttime;
123 double lastMessageTime;
124 double lastSendTime;
125
126 qboolean disconnected;
127 qboolean canSend;
128 qboolean sendNext;
129
130 int driver;
131 int landriver;
132 int socket;
133 void *driverdata;
134
135 unsigned int ackSequence;
136 unsigned int sendSequence;
137 unsigned int unreliableSendSequence;
138 int sendMessageLength;
139 byte sendMessage [NET_MAXMESSAGE];
140
141 unsigned int receiveSequence;
142 unsigned int unreliableReceiveSequence;
143 int receiveMessageLength;
144 byte receiveMessage [NET_MAXMESSAGE];
145
146 struct qsockaddr addr;
147 char address[NET_NAMELEN];
148
149} qsocket_t;
150
151extern qsocket_t *net_activeSockets;
152extern qsocket_t *net_freeSockets;
153extern int net_numsockets;
154
155typedef struct
156{
157 char *name;
158 qboolean initialized;
159 int controlSock;
160 int (*Init) (void);
161 void (*Shutdown) (void);
162 void (*Listen) (qboolean state);
163 int (*OpenSocket) (int port);
164 int (*CloseSocket) (int socket);
165 int (*Connect) (int socket, struct qsockaddr *addr);
166 int (*CheckNewConnections) (void);
167 int (*Read) (int socket, byte *buf, int len, struct qsockaddr *addr);
168 int (*Write) (int socket, byte *buf, int len, struct qsockaddr *addr);
169 int (*Broadcast) (int socket, byte *buf, int len);
170 char * (*AddrToString) (struct qsockaddr *addr);
171 int (*StringToAddr) (char *string, struct qsockaddr *addr);
172 int (*GetSocketAddr) (int socket, struct qsockaddr *addr);
173 int (*GetNameFromAddr) (struct qsockaddr *addr, char *name);
174 int (*GetAddrFromName) (char *name, struct qsockaddr *addr);
175 int (*AddrCompare) (struct qsockaddr *addr1, struct qsockaddr *addr2);
176 int (*GetSocketPort) (struct qsockaddr *addr);
177 int (*SetSocketPort) (struct qsockaddr *addr, int port);
178} net_landriver_t;
179
180#define MAX_NET_DRIVERS 8
181extern int net_numlandrivers;
182extern net_landriver_t net_landrivers[MAX_NET_DRIVERS];
183
184typedef struct
185{
186 char *name;
187 qboolean initialized;
188 int (*Init) (void);
189 void (*Listen) (qboolean state);
190 void (*SearchForHosts) (qboolean xmit);
191 qsocket_t *(*Connect) (char *host);
192 qsocket_t *(*CheckNewConnections) (void);
193 int (*QGetMessage) (qsocket_t *sock);
194 int (*QSendMessage) (qsocket_t *sock, sizebuf_t *data);
195 int (*SendUnreliableMessage) (qsocket_t *sock, sizebuf_t *data);
196 qboolean (*CanSendMessage) (qsocket_t *sock);
197 qboolean (*CanSendUnreliableMessage) (qsocket_t *sock);
198 void (*Close) (qsocket_t *sock);
199 void (*Shutdown) (void);
200 int controlSock;
201} net_driver_t;
202
203extern int net_numdrivers;
204extern net_driver_t net_drivers[MAX_NET_DRIVERS];
205
206extern int DEFAULTnet_hostport;
207extern int net_hostport;
208
209extern int net_driverlevel;
210extern cvar_t hostname;
211extern char playername[];
212extern int playercolor;
213
214extern int messagesSent;
215extern int messagesReceived;
216extern int unreliableMessagesSent;
217extern int unreliableMessagesReceived;
218
219qsocket_t *NET_NewQSocket (void);
220void NET_FreeQSocket(qsocket_t *);
221double SetNetTime(void);
222
223
224#define HOSTCACHESIZE 8
225
226typedef struct
227{
228 char name[16];
229 char map[16];
230 char cname[32];
231 int users;
232 int maxusers;
233 int driver;
234 int ldriver;
235 struct qsockaddr addr;
236} hostcache_t;
237
238extern int hostCacheCount;
239extern hostcache_t hostcache[HOSTCACHESIZE];
240
241#if !defined(_WIN32 ) && !defined (__linux__) && !defined (__sun__)
242#ifndef htonl
243extern unsigned long htonl (unsigned long hostlong);
244#endif
245#ifndef htons
246extern unsigned short htons (unsigned short hostshort);
247#endif
248#ifndef ntohl
249extern unsigned long ntohl (unsigned long netlong);
250#endif
251#ifndef ntohs
252extern unsigned short ntohs (unsigned short netshort);
253#endif
254#endif
255
256#ifdef IDGODS
257qboolean IsID(struct qsockaddr *addr);
258#endif
259
260//============================================================================
261//
262// public network functions
263//
264//============================================================================
265
266extern double net_time;
267extern sizebuf_t net_message;
268extern int net_activeconnections;
269
270void NET_Init (void);
271void NET_Shutdown (void);
272
273struct qsocket_s *NET_CheckNewConnections (void);
274// returns a new connection number if there is one pending, else -1
275
276struct qsocket_s *NET_Connect (char *host);
277// called by client to connect to a host. Returns -1 if not able to
278
279qboolean NET_CanSendMessage (qsocket_t *sock);
280// Returns true or false if the given qsocket can currently accept a
281// message to be transmitted.
282
283int NET_GetMessage (struct qsocket_s *sock);
284// returns data in net_message sizebuf
285// returns 0 if no data is waiting
286// returns 1 if a message was received
287// returns 2 if an unreliable message was received
288// returns -1 if the connection died
289
290int NET_SendMessage (struct qsocket_s *sock, sizebuf_t *data);
291int NET_SendUnreliableMessage (struct qsocket_s *sock, sizebuf_t *data);
292// returns 0 if the message connot be delivered reliably, but the connection
293// is still considered valid
294// returns 1 if the message was sent properly
295// returns -1 if the connection died
296
297int NET_SendToAll(sizebuf_t *data, int blocktime);
298// This is a reliable *blocking* send to all attached clients.
299
300
301void NET_Close (struct qsocket_s *sock);
302// if a dead connection is returned by a get or send function, this function
303// should be called when it is convenient
304
305// Server calls when a client is kicked off for a game related misbehavior
306// like an illegal protocal conversation. Client calls when disconnecting
307// from a server.
308// A netcon_t number will not be reused until this function is called for it
309
310void NET_Poll(void);
311
312
313typedef struct _PollProcedure
314{
315 struct _PollProcedure *next;
316 double nextTime;
317 void (*procedure)();
318 void *arg;
319} PollProcedure;
320
321void SchedulePollProcedure(PollProcedure *pp, double timeOffset);
322
323extern qboolean serialAvailable;
324extern qboolean ipxAvailable;
325extern qboolean tcpipAvailable;
326extern char my_ipx_address[NET_NAMELEN];
327extern char my_tcpip_address[NET_NAMELEN];
328extern void (*GetComPortConfig) (int portNumber, int *port, int *irq, int *baud, qboolean *useModem);
329extern void (*SetComPortConfig) (int portNumber, int port, int irq, int baud, qboolean useModem);
330extern void (*GetModemConfig) (int portNumber, char *dialType, char *clear, char *init, char *hangup);
331extern void (*SetModemConfig) (int portNumber, char *dialType, char *clear, char *init, char *hangup);
332
333extern qboolean slistInProgress;
334extern qboolean slistSilent;
335extern qboolean slistLocal;
336
337void NET_Slist_f (void);
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