2 * Netris -- A free networked version of T*tris
3 * Copyright (C) 1994,1995,1996 Mark H. Weaver <mhw@netris.org>
5 * This program is free software; you can redistribute it and/or
6 * modify it under the terms of the GNU General Public License
7 * as published by the Free Software Foundation; either version 2
8 * of the License, or (at your option) any later version.
10 * This program is distributed in the hope that it will be useful,
11 * but WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 * GNU General Public License for more details.
15 * You should have received a copy of the GNU General Public License
16 * along with this program; if not, write to the Free Software
17 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
22 #include <sys/types.h>
25 #include <sys/socket.h>
26 #include <netinet/in.h>
34 #define HEADER_SIZE sizeof(netint2[2])
35 #define HEADER_SIZE3 sizeof(netint4[3])
37 static MyEventType NetGenFunc(EventGenRec *gen, MyEvent *event);
38 static EventGenRec netGen = {
39 NULL, 0, FT_read, -1, NetGenFunc, EM_net, 0, "\0", 0, HEADER_SIZE3
43 static sigjmp_buf close_env;
45 static void CatchInt(int sig)
47 siglongjmp(close_env, 1);
50 int InitiateConnection(char *hostStr, short port)
52 struct sockaddr_in addr;
55 if (sigsetjmp(close_env, 1))
57 signal(SIGINT, CatchInt); //handle exit (^C)
59 host = gethostbyname(hostStr);
62 assert(host->h_addrtype == AF_INET);
64 memset(&addr, 0, sizeof(addr));
65 addr.sin_family = host->h_addrtype;
66 memcpy(&addr.sin_addr, host->h_addr, host->h_length);
67 addr.sin_port = htons(port);
68 if ((netGen.fd = socket(AF_INET, SOCK_STREAM, 0)) < 0)
70 if (connect(netGen.fd, (struct sockaddr *)&addr, sizeof(addr)) < 0) {
71 if (errno != ECONNREFUSED)
86 netint4 versiondata[2];
87 versiondata[0] = hton4(MAJOR_VERSION);
88 versiondata[1] = hton4(PROTOCOL_VERSION);
89 SendPacket(0, NP_hello, sizeof(versiondata), versiondata);
93 if (WaitMyEvent(&event, EM_net) == E_net)
94 switch (event.u.net.type) {
98 memcpy(&Players[me], &Players[0], sizeof(player_t));
99 fprintf(stderr, "Accepted (%s) as #%d (%s)\n",
100 event.u.net.data, me, Players[me].name);
101 SendPacket(0, NP_newPlayer,
102 sizeof(player_t) - sizeof(Players[me].host),
107 { //receive your teamnumber
108 memcpy(&Players[event.u.net.uid].team, event.u.net.data,
124 memcpy(&data, event.u.net.data, event.u.net.size);
125 memcpy(&Players[me].flags, &data, sizeof(data.playerflags));
126 memcpy(&Players[me].flags, &data, sizeof(data.playerflags));
127 memcpy(&Game.gravity, &data.gravity,
128 sizeof(data) - sizeof(data.playerflags));
133 fprintf(stderr, "Rejected by server: %s\n", event.u.net.data);
140 fatal("Hm, the party apparantly ended prematurely.");
141 } while (event.u.net.type != NP_gamedata);
145 static MyEventType NetGenFunc(EventGenRec *gen, MyEvent *event)
148 short uid, type, size;
149 netint4 *data = (netint4*)&(gen->buf);
151 result = MyRead(gen->fd, gen->buf + gen->bufSize,
152 gen->bufGoal - gen->bufSize);
158 gen->bufSize += result;
159 if (gen->bufSize < gen->bufGoal)
161 // *ugly* memcpy(data, gen->buf, sizeof(data));
162 uid = ntoh4(data[0]);
163 type = ntoh4(data[1]);
164 size = ntoh4(data[2]);
166 if (gen->bufSize < gen->bufGoal)
169 gen->bufGoal = HEADER_SIZE3;
170 event->u.net.sender = gen->player;
171 event->u.net.uid = uid;
172 event->u.net.type = type;
173 event->u.net.size = size - HEADER_SIZE3;
174 event->u.net.data = gen->buf + HEADER_SIZE3;
175 if (type == NP_endConn) return E_lostConn;
179 void SendPacket(short uid, NetPacketType type, int size, void *data)
180 { //send shit to server
183 header[0] = hton4(uid);
184 header[1] = hton4(type);
185 header[2] = hton4(size + HEADER_SIZE3);
186 if (MyWrite(netGen.fd, header, HEADER_SIZE3) != HEADER_SIZE3)
187 die("write (header)");
188 if (size > 0 && data && MyWrite(netGen.fd, data, size) != size)
193 { //kick some connection's ass!
196 if (netGen.fd >= 0) {
197 SendPacket(0, NP_endConn, 0, NULL);
202 RemoveEventGen(&netGen);