* network.c *
***********************************************************/
+#ifndef MSDOS
+
#include <unistd.h>
#include <fcntl.h>
#include <sys/time.h>
static int clients = 0;
static int onceonly = 0;
-static int is_daemon = 0;
struct NetworkServerPlayerInfo
{
int fd;
- unsigned char player_name[16];
+ char player_name[16];
unsigned char number;
struct NetworkServerPlayerInfo *next;
char active;
char introduced;
- unsigned char readbuf[MAX_BUFFER_SIZE];
- unsigned char writbuf[MAX_BUFFER_SIZE];
+ unsigned char readbuffer[MAX_BUFFER_SIZE];
+ unsigned char writbuffer[MAX_BUFFER_SIZE];
int nread, nwrite;
byte action;
boolean action_received;
};
-static struct NetworkServerPlayerInfo *user0 = NULL;
+static struct NetworkServerPlayerInfo *first_player = NULL;
-#define NEXT(u) ((u)->next ? (u)->next : user0)
+#define NEXT(player) ((player)->next ? (player)->next : first_player)
static struct sockaddr_in saddr;
static int lfd;
-static unsigned char realbuf[512], *buf = realbuf + 4;
+static unsigned char realbuffer[512], *buffer = realbuffer + 4;
static int interrupt;
static int tcp = -1;
static fd_set fds;
-static void syserr(char *s)
-{
- if (!is_daemon)
- fprintf(stderr, "fatal: %s failed.\n", s);
- exit(1);
-}
-
-static void addtobuffer(struct NetworkServerPlayerInfo *u,
+static void addtobuffer(struct NetworkServerPlayerInfo *player,
unsigned char *b, int len)
{
- if (u->nwrite + len >= MAX_BUFFER_SIZE)
- Error(ERR_EXIT, "internal error: network send buffer overflow");
+ if (player->nwrite + len >= MAX_BUFFER_SIZE)
+ Error(ERR_EXIT_NETWORK_SERVER,
+ "internal error: network send buffer overflow");
- memcpy(u->writbuf + u->nwrite, b, len);
- u->nwrite += len;
+ memcpy(player->writbuffer + player->nwrite, b, len);
+ player->nwrite += len;
}
-static void flushuser(struct NetworkServerPlayerInfo *u)
+static void flushuser(struct NetworkServerPlayerInfo *player)
{
- if (u->nwrite)
+ if (player->nwrite)
{
- write(u->fd, u->writbuf, u->nwrite);
- u->nwrite = 0;
+ write(player->fd, player->writbuffer, player->nwrite);
+ player->nwrite = 0;
}
}
static void broadcast(struct NetworkServerPlayerInfo *except,
int len, int activeonly)
{
- struct NetworkServerPlayerInfo *u;
+ struct NetworkServerPlayerInfo *player;
- realbuf[0] = realbuf[1] = realbuf[2] = 0;
- realbuf[3] = (unsigned char)len;
- for (u=user0; u; u=u->next)
- if (u != except && (u->active || !activeonly) && u->introduced)
- addtobuffer(u, realbuf, 4 + len);
+ realbuffer[0] = realbuffer[1] = realbuffer[2] = 0;
+ realbuffer[3] = (unsigned char)len;
+ for (player=first_player; player; player=player->next)
+ if (player != except && (player->active || !activeonly) && player->introduced)
+ addtobuffer(player, realbuffer, 4 + len);
}
static void sendtoone(struct NetworkServerPlayerInfo *to, int len)
{
- realbuf[0] = realbuf[1] = realbuf[2] = 0;
- realbuf[3] = (unsigned char)len;
- addtobuffer(to, realbuf, 4 + len);
+ realbuffer[0] = realbuffer[1] = realbuffer[2] = 0;
+ realbuffer[3] = (unsigned char)len;
+ addtobuffer(to, realbuffer, 4 + len);
}
-static void dropuser(struct NetworkServerPlayerInfo *u)
+static void RemovePlayer(struct NetworkServerPlayerInfo *player)
{
struct NetworkServerPlayerInfo *v;
if (options.verbose)
Error(ERR_NETWORK_SERVER, "dropping client %d (%s)",
- u->number, u->player_name);
+ player->number, player->player_name);
- if (u == user0)
- user0 = u->next;
+ if (player == first_player)
+ first_player = player->next;
else
{
- for (v=user0; v; v=v->next)
+ for (v=first_player; v; v=v->next)
{
- if (v->next && v->next == u)
+ if (v->next && v->next == player)
{
- v->next = u->next;
+ v->next = player->next;
break;
}
}
}
- close(u->fd);
+ close(player->fd);
- if (u->introduced)
+ if (player->introduced)
{
- buf[0] = u->number;
- buf[1] = OP_PLAYER_DISCONNECTED;
- broadcast(u, 2, 0);
+ buffer[0] = player->number;
+ buffer[1] = OP_PLAYER_DISCONNECTED;
+ broadcast(player, 2, 0);
}
- free(u);
+ free(player);
clients--;
if (onceonly && clients == 0)
}
}
-static void new_connect(int fd)
+static void AddPlayer(int fd)
{
- struct NetworkServerPlayerInfo *u, *v;
+ struct NetworkServerPlayerInfo *player, *v;
unsigned char nxn;
- u = checked_malloc(sizeof (struct NetworkServerPlayerInfo));
+ player = checked_malloc(sizeof (struct NetworkServerPlayerInfo));
- u->fd = fd;
- u->player_name[0] = 0;
- u->next = user0;
- u->active = 0;
- u->nread = 0;
- u->nwrite = 0;
- u->introduced = 0;
- u->action = 0;
- u->action_received = FALSE;
+ player->fd = fd;
+ player->player_name[0] = 0;
+ player->next = first_player;
+ player->active = 0;
+ player->nread = 0;
+ player->nwrite = 0;
+ player->introduced = 0;
+ player->action = 0;
+ player->action_received = FALSE;
- user0 = u;
+ first_player = player;
nxn = 1;
again:
- v = u->next;
+ v = player->next;
while(v)
{
if (v->number == nxn)
v = v->next;
}
- u->number = nxn;
+ player->number = nxn;
if (options.verbose)
Error(ERR_NETWORK_SERVER, "client %d connecting from %s",
nxn, inet_ntoa(saddr.sin_addr));
clients++;
- buf[0] = 0;
- buf[1] = OP_YOUR_NUMBER;
- buf[2] = u->number;
- sendtoone(u, 3);
+ buffer[0] = 0;
+ buffer[1] = OP_YOUR_NUMBER;
+ buffer[2] = player->number;
+ sendtoone(player, 3);
}
-static void Handle_OP_PROTOCOL_VERSION(struct NetworkServerPlayerInfo *u,
+static void Handle_OP_PROTOCOL_VERSION(struct NetworkServerPlayerInfo *player,
unsigned int len)
{
- if (len != 5 || buf[2] != PROTOCOL_VERSION_1 || buf[3] != PROTOCOL_VERSION_2)
+ if (len != 5 ||
+ buffer[2] != PROTOCOL_VERSION_1 ||
+ buffer[3] != PROTOCOL_VERSION_2)
{
if (options.verbose)
Error(ERR_NETWORK_SERVER,
"client %d (%s) has wrong protocol version %d.%d.%d",
- u->number, u->player_name, buf[2], buf[3], buf[4]);
+ player->number, player->player_name, buffer[2], buffer[3], buffer[4]);
- buf[0] = 0;
- buf[1] = OP_BAD_PROTOCOL_VERSION;
- buf[2] = PROTOCOL_VERSION_1;
- buf[3] = PROTOCOL_VERSION_2;
- buf[4] = PROTOCOL_VERSION_3;
- sendtoone(u, 5);
- flushuser(u);
+ buffer[0] = 0;
+ buffer[1] = OP_BAD_PROTOCOL_VERSION;
+ buffer[2] = PROTOCOL_VERSION_1;
+ buffer[3] = PROTOCOL_VERSION_2;
+ buffer[4] = PROTOCOL_VERSION_3;
+ sendtoone(player, 5);
+ flushuser(player);
- dropuser(u);
+ RemovePlayer(player);
interrupt = 1;
}
else
if (options.verbose)
Error(ERR_NETWORK_SERVER,
"client %d (%s) uses protocol version %d.%d.%d",
- u->number, u->player_name, buf[2], buf[3], buf[4]);
+ player->number, player->player_name, buffer[2], buffer[3], buffer[4]);
}
}
-static void Handle_OP_NUMBER_WANTED(struct NetworkServerPlayerInfo *u)
+static void Handle_OP_NUMBER_WANTED(struct NetworkServerPlayerInfo *player)
{
struct NetworkServerPlayerInfo *v;
- int client_nr = u->number;
- int nr_wanted = buf[2];
+ int client_nr = player->number;
+ int nr_wanted = buffer[2];
int nr_is_free = 1;
if (options.verbose)
Error(ERR_NETWORK_SERVER, "client %d (%s) wants to switch to # %d",
- u->number, u->player_name, nr_wanted);
+ player->number, player->player_name, nr_wanted);
- for (v=user0; v; v=v->next)
+ for (v=first_player; v; v=v->next)
{
if (v->number == nr_wanted)
{
{
if (nr_is_free)
Error(ERR_NETWORK_SERVER, "client %d (%s) switches to # %d",
- u->number, u->player_name, nr_wanted);
- else if (u->number == nr_wanted)
+ player->number, player->player_name, nr_wanted);
+ else if (player->number == nr_wanted)
Error(ERR_NETWORK_SERVER, "client %d (%s) still has # %d",
- u->number, u->player_name, nr_wanted);
+ player->number, player->player_name, nr_wanted);
else
Error(ERR_NETWORK_SERVER,
"client %d (%s) cannot switch (client %d still exists)",
- u->number, u->player_name, nr_wanted);
+ player->number, player->player_name, nr_wanted);
}
if (nr_is_free)
- u->number = nr_wanted;
+ player->number = nr_wanted;
- buf[0] = client_nr;
- buf[1] = OP_NUMBER_WANTED;
- buf[2] = nr_wanted;
- buf[3] = u->number;
+ buffer[0] = client_nr;
+ buffer[1] = OP_NUMBER_WANTED;
+ buffer[2] = nr_wanted;
+ buffer[3] = player->number;
/*
- sendtoone(u, 4);
+ sendtoone(player, 4);
*/
broadcast(NULL, 4, 0);
}
-static void Handle_OP_PLAYER_NAME(struct NetworkServerPlayerInfo *u,
+static void Handle_OP_PLAYER_NAME(struct NetworkServerPlayerInfo *player,
unsigned int len)
{
struct NetworkServerPlayerInfo *v;
if (len>16)
len=16;
- memcpy(u->player_name, &buf[2], len-2);
- u->player_name[len-2] = 0;
+ memcpy(player->player_name, &buffer[2], len-2);
+ player->player_name[len-2] = 0;
for (i=0; i<len-2; i++)
{
- if (u->player_name[i] < ' ' ||
- (u->player_name[i] > 0x7e && u->player_name[i] <= 0xa0))
+ if (player->player_name[i] < ' ' ||
+ ((unsigned char)(player->player_name[i]) > 0x7e &&
+ (unsigned char)(player->player_name[i]) <= 0xa0))
{
- u->player_name[i] = 0;
+ player->player_name[i] = 0;
break;
}
}
- if (!u->introduced)
+ if (!player->introduced)
{
- buf[0] = u->number;
- buf[1] = OP_PLAYER_CONNECTED;
- broadcast(u, 2, 0);
+ buffer[0] = player->number;
+ buffer[1] = OP_PLAYER_CONNECTED;
+ broadcast(player, 2, 0);
}
if (options.verbose)
Error(ERR_NETWORK_SERVER, "client %d calls itself \"%s\"",
- u->number, u->player_name);
- buf[1] = OP_PLAYER_NAME;
- broadcast(u, len, 0);
+ player->number, player->player_name);
+ buffer[1] = OP_PLAYER_NAME;
+ broadcast(player, len, 0);
- if (!u->introduced)
+ if (!player->introduced)
{
- for (v=user0; v; v=v->next)
+ for (v=first_player; v; v=v->next)
{
- if (v != u && v->introduced)
+ if (v != player && v->introduced)
{
- buf[0] = v->number;
- buf[1] = OP_PLAYER_CONNECTED;
- sendtoone(u, 2);
- buf[1] = OP_PLAYER_NAME;
- memcpy(&buf[2], v->player_name, 14);
- sendtoone(u, 2+strlen(v->player_name));
+ buffer[0] = v->number;
+ buffer[1] = OP_PLAYER_CONNECTED;
+ sendtoone(player, 2);
+ buffer[1] = OP_PLAYER_NAME;
+ memcpy(&buffer[2], v->player_name, 14);
+ sendtoone(player, 2+strlen(v->player_name));
}
}
}
- u->introduced = 1;
+ player->introduced = 1;
}
-static void Handle_OP_START_PLAYING(struct NetworkServerPlayerInfo *u)
+static void Handle_OP_START_PLAYING(struct NetworkServerPlayerInfo *player)
{
struct NetworkServerPlayerInfo *v, *w;
if (options.verbose)
Error(ERR_NETWORK_SERVER,
"client %d (%s) starts game [level %d from levedir %d (%s)]",
- u->number, u->player_name,
- (buf[2] << 8) + buf[3],
- (buf[4] << 8) + buf[5],
- &buf[6]);
+ player->number, player->player_name,
+ (buffer[2] << 8) + buffer[3],
+ (buffer[4] << 8) + buffer[5],
+ &buffer[6]);
- for (w=user0; w; w=w->next)
+ for (w=first_player; w; w=w->next)
if (w->introduced)
w->active = 1;
ServerFrameCounter = 0;
/* reset player actions */
- for (v=user0; v; v=v->next)
+ for (v=first_player; v; v=v->next)
{
v->action = 0;
v->action_received = FALSE;
}
- broadcast(NULL, 10 + strlen(&buf[10])+1, 0);
+ broadcast(NULL, 10 + strlen((char *)&buffer[10])+1, 0);
}
-static void Handle_OP_PAUSE_PLAYING(struct NetworkServerPlayerInfo *u)
+static void Handle_OP_PAUSE_PLAYING(struct NetworkServerPlayerInfo *player)
{
if (options.verbose)
Error(ERR_NETWORK_SERVER, "client %d (%s) pauses game",
- u->number, u->player_name);
+ player->number, player->player_name);
broadcast(NULL, 2, 0);
}
-static void Handle_OP_CONTINUE_PLAYING(struct NetworkServerPlayerInfo *u)
+static void Handle_OP_CONTINUE_PLAYING(struct NetworkServerPlayerInfo *player)
{
if (options.verbose)
Error(ERR_NETWORK_SERVER, "client %d (%s) continues game",
- u->number, u->player_name);
+ player->number, player->player_name);
broadcast(NULL, 2, 0);
}
-static void Handle_OP_STOP_PLAYING(struct NetworkServerPlayerInfo *u)
+static void Handle_OP_STOP_PLAYING(struct NetworkServerPlayerInfo *player)
{
if (options.verbose)
Error(ERR_NETWORK_SERVER, "client %d (%s) stops game",
- u->number, u->player_name);
+ player->number, player->player_name);
broadcast(NULL, 2, 0);
}
-static void Handle_OP_MOVE_FIGURE(struct NetworkServerPlayerInfo *u)
+static void Handle_OP_MOVE_FIGURE(struct NetworkServerPlayerInfo *player)
{
struct NetworkServerPlayerInfo *v;
int last_client_nr = 0;
int i;
/* store player action */
- for (v=user0; v; v=v->next)
+ for (v=first_player; v; v=v->next)
{
- if (v->number == u->number)
+ if (v->number == player->number)
{
- v->action = buf[2];
+ v->action = buffer[2];
v->action_received = TRUE;
}
}
/* check if server received action from each player */
- for (v=user0; v; v=v->next)
+ for (v=first_player; v; v=v->next)
{
if (!v->action_received)
return;
/* initialize all player actions to zero */
for (i=0; i<last_client_nr; i++)
- buf[6 + i] = 0;
+ buffer[6 + i] = 0;
/* broadcast actions of all players to all players */
- for (v=user0; v; v=v->next)
+ for (v=first_player; v; v=v->next)
{
- buf[6 + v->number-1] = v->action;
+ buffer[6 + v->number-1] = v->action;
v->action = 0;
v->action_received = FALSE;
}
- buf[2] = (unsigned char)((ServerFrameCounter >> 24) & 0xff);
- buf[3] = (unsigned char)((ServerFrameCounter >> 16) & 0xff);
- buf[4] = (unsigned char)((ServerFrameCounter >> 8) & 0xff);
- buf[5] = (unsigned char)((ServerFrameCounter >> 0) & 0xff);
+ buffer[2] = (unsigned char)((ServerFrameCounter >> 24) & 0xff);
+ buffer[3] = (unsigned char)((ServerFrameCounter >> 16) & 0xff);
+ buffer[4] = (unsigned char)((ServerFrameCounter >> 8) & 0xff);
+ buffer[5] = (unsigned char)((ServerFrameCounter >> 0) & 0xff);
broadcast(NULL, 6 + last_client_nr, 0);
void NetworkServer(int port, int serveronly)
{
int i, sl, on;
- struct NetworkServerPlayerInfo *u;
+ struct NetworkServerPlayerInfo *player;
int mfd;
int r;
unsigned int len;
#endif
- lfd = socket(PF_INET, SOCK_STREAM, 0);
+ if ((lfd = socket(PF_INET, SOCK_STREAM, 0)) < 0)
+ Error(ERR_EXIT_NETWORK_SERVER, "socket() failed");
+
saddr.sin_family = AF_INET;
saddr.sin_addr.s_addr = htonl(INADDR_ANY);
saddr.sin_port = htons(port);
- if (lfd < 0)
- syserr("socket");
on = 1;
setsockopt(lfd, SOL_SOCKET, SO_REUSEADDR, (char *)&on, sizeof(int));
if (bind(lfd, (struct sockaddr *)&saddr, sizeof(saddr)) < 0)
- syserr("bind");
+ Error(ERR_EXIT_NETWORK_SERVER, "bind() failed");
listen(lfd, 5);
{
interrupt = 0;
- for (u=user0; u; u=u->next)
- flushuser(u);
+ for (player=first_player; player; player=player->next)
+ flushuser(player);
FD_ZERO(&fds);
mfd = lfd;
- u = user0;
- while (u)
+ player = first_player;
+ while (player)
{
- FD_SET(u->fd, &fds);
- if (u->fd > mfd)
- mfd = u->fd;
- u = u->next;
+ FD_SET(player->fd, &fds);
+ if (player->fd > mfd)
+ mfd = player->fd;
+ player = player->next;
}
FD_SET(lfd, &fds);
tv.tv_sec = 0;
if ((sl = select(mfd + 1, &fds, NULL, NULL, &tv)) < 0)
{
if (errno != EINTR)
- syserr("select");
+ Error(ERR_EXIT_NETWORK_SERVER, "select() failed");
else
continue;
}
if (newfd < 0)
{
if (errno != EINTR)
- syserr("accept");
+ Error(ERR_EXIT_NETWORK_SERVER, "accept() failed");
}
else
{
on = 1;
setsockopt(newfd, tcp, TCP_NODELAY, (char *)&on, sizeof(int));
}
- new_connect(newfd);
+ AddPlayer(newfd);
}
continue;
}
- u = user0;
+ player = first_player;
do
{
- if (FD_ISSET(u->fd, &fds))
+ if (FD_ISSET(player->fd, &fds))
{
- r = read(u->fd, u->readbuf + u->nread, MAX_BUFFER_SIZE - u->nread);
+ r = read(player->fd, player->readbuffer + player->nread, MAX_BUFFER_SIZE - player->nread);
if (r <= 0)
{
if (options.verbose)
Error(ERR_NETWORK_SERVER, "EOF from client %d (%s)",
- u->number, u->player_name);
- dropuser(u);
+ player->number, player->player_name);
+ RemovePlayer(player);
interrupt = 1;
break;
}
- u->nread += r;
- while (u->nread >= 4 && u->nread >= 4 + u->readbuf[3])
+ player->nread += r;
+ while (player->nread >= 4 && player->nread >= 4 + player->readbuffer[3])
{
- len = u->readbuf[3];
- if (u->readbuf[0] || u->readbuf[1] || u->readbuf[2])
+ len = player->readbuffer[3];
+ if (player->readbuffer[0] || player->readbuffer[1] || player->readbuffer[2])
{
if (options.verbose)
Error(ERR_NETWORK_SERVER, "crap from client %d (%s)",
- u->number, u->player_name);
- write(u->fd, "\033]50;kanji24\007\033#8\033(0", 19);
- dropuser(u);
+ player->number, player->player_name);
+ RemovePlayer(player);
interrupt = 1;
break;
}
- memcpy(buf, &u->readbuf[4], len);
- u->nread -= 4 + len;
- memmove(u->readbuf, u->readbuf + 4 + len, u->nread);
+ memcpy(buffer, &player->readbuffer[4], len);
+ player->nread -= 4 + len;
+ memmove(player->readbuffer, player->readbuffer + 4 + len, player->nread);
- buf[0] = u->number;
- if (!u->introduced && buf[1] != OP_PLAYER_NAME)
+ buffer[0] = player->number;
+ if (!player->introduced && buffer[1] != OP_PLAYER_NAME)
{
if (options.verbose)
- Error(ERR_NETWORK_SERVER, "!(client %d)->introduced && buf[1]==%d (expected OP_PLAYER_NAME)", buf[0], buf[1]);
+ Error(ERR_NETWORK_SERVER, "!(client %d)->introduced && buffer[1]==%d (expected OP_PLAYER_NAME)", buffer[0], buffer[1]);
- dropuser(u);
+ RemovePlayer(player);
interrupt = 1;
break;
}
- switch(buf[1])
+ switch(buffer[1])
{
case OP_PLAYER_NAME:
- Handle_OP_PLAYER_NAME(u, len);
+ Handle_OP_PLAYER_NAME(player, len);
break;
case OP_PROTOCOL_VERSION:
- Handle_OP_PROTOCOL_VERSION(u, len);
+ Handle_OP_PROTOCOL_VERSION(player, len);
break;
case OP_NUMBER_WANTED:
- Handle_OP_NUMBER_WANTED(u);
+ Handle_OP_NUMBER_WANTED(player);
break;
case OP_START_PLAYING:
- Handle_OP_START_PLAYING(u);
+ Handle_OP_START_PLAYING(player);
break;
case OP_PAUSE_PLAYING:
- Handle_OP_PAUSE_PLAYING(u);
+ Handle_OP_PAUSE_PLAYING(player);
break;
case OP_CONTINUE_PLAYING:
- Handle_OP_CONTINUE_PLAYING(u);
+ Handle_OP_CONTINUE_PLAYING(player);
break;
case OP_STOP_PLAYING:
- Handle_OP_STOP_PLAYING(u);
+ Handle_OP_STOP_PLAYING(player);
break;
case OP_MOVE_FIGURE:
- Handle_OP_MOVE_FIGURE(u);
+ Handle_OP_MOVE_FIGURE(player);
break;
case OP_BROADCAST_MESSAGE:
- buf[len] = '\0';
+ buffer[len] = '\0';
if (options.verbose)
Error(ERR_NETWORK_SERVER, "client %d (%s) sends message: %s",
- u->number, u->player_name, &buf[2]);
- broadcast(u, len, 0);
+ player->number, player->player_name, &buffer[2]);
+ broadcast(player, len, 0);
break;
default:
if (options.verbose)
Error(ERR_NETWORK_SERVER,
"unknown opcode %d from client %d (%s)",
- buf[0], u->number, u->player_name);
+ buffer[0], player->number, player->player_name);
}
}
}
- if (u && !interrupt)
- u = u->next;
+ if (player && !interrupt)
+ player = player->next;
}
- while (u && !interrupt);
+ while (player && !interrupt);
}
}
+
+#endif /* !MSDOS */