#include <errno.h>
#include "network.h"
+#include "netserv.h"
+#include "game.h"
+#include "tape.h"
+#include "files.h"
+#include "tools.h"
+#include "buttons.h"
+#include "screens.h"
+#include "misc.h"
+
+#define MAXNICKLEN 14
+
+struct user
+{
+ byte nr;
+ char name[MAXNICKLEN+2];
+ struct user *next;
+};
+
+struct user me =
+{
+ 0,
+ "no name",
+ NULL
+};
-int norestart = 0;
-int nospeedup = 0;
-
-#define DEFAULTPORT 19503
-
-#define PROT_VERS_1 1
-#define PROT_VERS_2 0
-#define PROT_VERS_3 1
-
-#define OP_NICK 1
-#define OP_PLAY 2
-#define OP_FALL 3
-#define OP_DRAW 4
-#define OP_LOST 5
-#define OP_GONE 6
-#define OP_CLEAR 7
-#define OP_NEW 8
-#define OP_LINES 9
-#define OP_GROW 10
-#define OP_MODE 11
-#define OP_LEVEL 12
-#define OP_BOT 13
-#define OP_KILL 14
-#define OP_PAUSE 15
-#define OP_CONT 16
-#define OP_VERSION 17
-#define OP_BADVERS 18
-#define OP_MSG 19
-#define OP_YOUARE 20
-#define OP_LINESTO 21
-#define OP_WON 22
-#define OP_ZERO 23
+static char msgbuf[300];
/* server stuff */
-#define BUFLEN 4096
-
int sfd;
-unsigned char realbuf[512], readbuf[BUFLEN], writbuf[BUFLEN];
+unsigned char realbuf[512], readbuf[MAX_BUFFER_SIZE], writbuf[MAX_BUFFER_SIZE];
unsigned char *buf = realbuf + 4;
int nread = 0, nwrite = 0;
-/* like memcpy, but guaranteed to handle overlap when s <= t */
-void copydown(char *s, char *t, int n)
-{
- for (; n; n--)
- *(s++) = *(t++);
-}
-
-void sysmsg(char *s)
+static void sysmsg(char *s)
{
- printf("** %s\n", s);
- fflush(stdout);
-}
-
-void fatal(char *s)
-{
- fprintf(stderr, "%s.\n", s);
- exit(1);
+ if (options.verbose)
+ {
+ printf("** %s\n", s);
+ fflush(stdout);
+ }
}
-void u_sleep(int i)
+static void u_sleep(int i)
{
struct timeval tm;
tm.tv_sec = i / 1000000;
select(0, NULL, NULL, NULL, &tm);
}
-void flushbuf()
+static void flushbuf()
{
if (nwrite)
{
}
}
-void sendbuf(int len)
+static void sendbuf(int len)
{
- if (!standalone)
+ if (options.network)
{
realbuf[0] = realbuf[1] = realbuf[2] = 0;
realbuf[3] = (unsigned char)len;
buf[0] = 0;
- if (nwrite + 4 + len >= BUFLEN)
- fatal("Internal error: send buffer overflow");
+ if (nwrite + 4 + len >= MAX_BUFFER_SIZE)
+ Error(ERR_EXIT, "internal error: network send buffer overflow");
memcpy(writbuf + nwrite, realbuf, 4 + len);
nwrite += 4 + len;
+
+
+ flushbuf();
+
+
}
}
-void startserver()
+struct user *finduser(unsigned char c)
+{
+ struct user *u;
+
+ for (u = &me; u; u = u->next)
+ if (u->nr == c)
+ return u;
+
+ Error(ERR_EXIT, "protocol error: reference to non-existing user %d", c);
+
+ return NULL; /* so that gcc -Wall doesn't complain */
+}
+
+char *get_user_name(unsigned char c)
{
- char *options[2];
- int n = 0;
+ struct user *u;
- options[0] = options[1] = NULL;
- if (norestart)
- options[n++] = "-norestart";
- if (nospeedup)
- options[n++] = "-nospeedup";
+ if (c == 0)
+ return("the server");
+ else if (c == me.nr)
+ return("you");
+ else
+ for (u = &me; u; u = u->next)
+ if (u->nr == c && u->name && strlen(u->name))
+ return(u->name);
+
+ return("no name");
+}
+static void StartNetworkServer(int port)
+{
switch (fork())
{
case 0:
- execlp(
-#ifdef XTRISPATH
- XTRISPATH "/rnd_server",
-#else
- "rnd_server",
-#endif
- "rnd_server", "-once", "-v", options[0], options[1], NULL);
-
- fprintf(stderr, "Can't start server '%s'.\n",
-#ifdef XTRISPATH
- XTRISPATH "/rnd_server"
-#else
- "rnd_server"
-#endif
- );
-
- _exit(1);
-
+ NetworkServer(port, options.serveronly);
+
+ /* never reached */
+ exit(0);
+
case -1:
- fatal("fork() failed");
-
+ Error(ERR_RETURN,
+ "cannot create network server process - no network games");
+ options.network = FALSE;
+ return;
+
default:
+ /* we are parent process -- resume normal operation */
return;
}
}
-BOOL ConnectToServer(char *host, int port)
+boolean ConnectToServer(char *host, int port)
{
struct hostent *hp;
struct sockaddr_in s;
{
hp = gethostbyname(host);
if (!hp)
- fatal("Host not found");
+ Error(ERR_EXIT, "cannot locate host '%s'", host);
+
s.sin_addr = *(struct in_addr *)(hp->h_addr_list[0]);
}
}
s.sin_port = htons(port);
s.sin_family = AF_INET;
+
sfd = socket(PF_INET, SOCK_STREAM, 0);
if (sfd < 0)
- fatal("Out of file descriptors");
+ Error(ERR_EXIT, "out of file descriptors");
+
if ((tcpproto = getprotobyname("tcp")) != NULL)
setsockopt(sfd, tcpproto->p_proto, TCP_NODELAY, (char *)&on, sizeof(int));
if (!host)
{
printf("No rocksndiamonds server on localhost - starting up one ...\n");
- startserver();
+
+ StartNetworkServer(port);
+
for (i=0; i<6; i++)
{
u_sleep(500000);
close(sfd);
+
sfd = socket(PF_INET, SOCK_STREAM, 0);
if (sfd < 0)
- fatal("Out of file descriptors");
- setsockopt(sfd, tcpproto->p_proto, TCP_NODELAY, (char *)&on, sizeof(int));
+ Error(ERR_EXIT, "out of file descriptors");
+
+ setsockopt(sfd, tcpproto->p_proto, TCP_NODELAY,
+ (char *)&on, sizeof(int));
+
if (connect(sfd, (struct sockaddr *)&s, sizeof(s)) >= 0)
break;
}
if (i==6)
- fatal("Can't connect to server");
+ Error(ERR_EXIT, "cannot connect to server");
}
else
- fatal("Can't connect to server");
+ Error(ERR_EXIT, "cannot connect to server");
}
return(TRUE);
}
-void SendNicknameToServer(char *nickname)
+void SendToServer_Nickname(char *nickname)
{
static char msgbuf[300];
- buf[1] = OP_NICK;
+ buf[1] = OP_NICKNAME;
memcpy(&buf[2], nickname, strlen(nickname));
sendbuf(2 + strlen(nickname));
sprintf(msgbuf, "you set your nick to \"%s\"", nickname);
sysmsg(msgbuf);
}
-void SendProtocolVersionToServer()
+void SendToServer_ProtocolVersion()
{
- buf[1] = OP_VERSION;
+ buf[1] = OP_PROTOCOL_VERSION;
buf[2] = PROT_VERS_1;
buf[3] = PROT_VERS_2;
buf[4] = PROT_VERS_3;
+
sendbuf(5);
}
-void handlemessages()
+void SendToServer_NrWanted(int nr_wanted)
+{
+ buf[1] = OP_NUMBER_WANTED;
+ buf[2] = nr_wanted;
+
+ sendbuf(3);
+}
+
+void SendToServer_StartPlaying()
+{
+ unsigned long new_random_seed = InitRND(NEW_RANDOMIZE);
+
+ buf[1] = OP_START_PLAYING;
+ buf[2] = (byte)(level_nr >> 8);
+ buf[3] = (byte)(level_nr & 0xff);
+ buf[4] = (byte)(leveldir_nr >> 8);
+ buf[5] = (byte)(leveldir_nr & 0xff);
+
+ buf[6] = (unsigned char)((new_random_seed >> 24) & 0xff);
+ buf[7] = (unsigned char)((new_random_seed >> 16) & 0xff);
+ buf[8] = (unsigned char)((new_random_seed >> 8) & 0xff);
+ buf[9] = (unsigned char)((new_random_seed >> 0) & 0xff);
+
+ strcpy(&buf[10], leveldir[leveldir_nr].name);
+
+ sendbuf(10 + strlen(leveldir[leveldir_nr].name)+1);
+}
+
+void SendToServer_PausePlaying()
+{
+ buf[1] = OP_PAUSE_PLAYING;
+
+ sendbuf(2);
+}
+
+void SendToServer_ContinuePlaying()
+{
+ buf[1] = OP_CONTINUE_PLAYING;
+
+ sendbuf(2);
+}
+
+void SendToServer_StopPlaying()
+{
+ buf[1] = OP_STOP_PLAYING;
+
+ sendbuf(2);
+}
+
+void SendToServer_MovePlayer(byte player_action)
+{
+ buf[1] = OP_MOVE_FIGURE;
+ buf[2] = player_action;
+
+ sendbuf(3);
+}
+
+static void Handle_OP_BAD_PROTOCOL_VERSION()
+{
+ Error(ERR_RETURN, "protocol version mismatch");
+ Error(ERR_EXIT, "server expects %d.%d.x instead of %d.%d.%d",
+ buf[2], buf[3], PROT_VERS_1, PROT_VERS_2, PROT_VERS_3);
+}
+
+static void Handle_OP_YOUR_NUMBER()
+{
+ int new_client_nr = buf[2];
+ int new_index_nr = new_client_nr - 1;
+ struct PlayerInfo *old_local_player = local_player;
+ struct PlayerInfo *new_local_player = &stored_player[new_index_nr];
+
+ printf("OP_YOUR_NUMBER: %d\n", buf[0]);
+ me.nr = new_client_nr;
+
+ if (old_local_player != new_local_player)
+ {
+ /* copy existing player settings and change to new player */
+
+ *new_local_player = *old_local_player;
+ old_local_player->connected = FALSE;
+ old_local_player->local = FALSE;
+
+ local_player = new_local_player;
+ }
+
+ TestPlayer = new_index_nr;
+
+ if (me.nr > MAX_PLAYERS)
+ Error(ERR_EXIT, "sorry - no more than %d players", MAX_PLAYERS);
+
+ sprintf(msgbuf, "you get client # %d", new_client_nr);
+ sysmsg(msgbuf);
+}
+
+static void Handle_OP_NUMBER_WANTED()
+{
+ int client_nr_wanted = buf[2];
+ int old_client_nr = buf[0];
+ int new_client_nr = buf[3];
+ int old_index_nr = old_client_nr - 1;
+ int new_index_nr = new_client_nr - 1;
+ int index_nr_wanted = client_nr_wanted - 1;
+ struct PlayerInfo *old_player = &stored_player[old_index_nr];
+ struct PlayerInfo *new_player = &stored_player[new_index_nr];
+
+ printf("OP_NUMBER_WANTED: %d\n", buf[0]);
+
+ if (new_client_nr == client_nr_wanted) /* switching succeeded */
+ {
+ struct user *u;
+
+ if (old_client_nr != client_nr_wanted) /* client's nr has changed */
+ {
+ sprintf(msgbuf, "client %d switches to # %d",
+ old_client_nr, new_client_nr);
+ sysmsg(msgbuf);
+ }
+ else if (old_client_nr == me.nr) /* local player keeps his nr */
+ {
+ sprintf(msgbuf, "keeping client # %d", new_client_nr);
+ sysmsg(msgbuf);
+ }
+
+ if (old_client_nr != new_client_nr)
+ {
+ /* copy existing player settings and change to new player */
+
+ *new_player = *old_player;
+ old_player->connected = FALSE;
+ old_player->local = FALSE;
+ }
+
+ u = finduser(old_client_nr);
+ u->nr = new_client_nr;
+
+ if (old_player == local_player) /* local player switched */
+ local_player = new_player;
+
+
+ TestPlayer = new_index_nr;
+ }
+ else if (old_client_nr == me.nr) /* failed -- local player? */
+ {
+ char *color[] = { "yellow", "red", "green", "blue" };
+
+ sprintf(msgbuf, "Sorry ! %s player still exists ! You are %s player !",
+ color[index_nr_wanted], color[new_index_nr]);
+ Request(msgbuf, REQ_CONFIRM);
+
+ sprintf(msgbuf, "cannot switch -- you keep client # %d",
+ new_client_nr);
+ sysmsg(msgbuf);
+ }
+}
+
+static void Handle_OP_NICKNAME(unsigned int len)
+{
+ struct user *u;
+
+ printf("OP_NICKNAME: %d\n", buf[0]);
+ u = finduser(buf[0]);
+ buf[len] = 0;
+ sprintf(msgbuf, "client %d calls itself \"%s\"", buf[0], &buf[2]);
+ sysmsg(msgbuf);
+ strncpy(u->name, &buf[2], MAXNICKLEN);
+}
+
+static void Handle_OP_PLAYER_CONNECTED()
+{
+ struct user *u, *v = NULL;
+ int new_client_nr = buf[0];
+ int new_index_nr = new_client_nr - 1;
+
+ printf("OP_PLAYER_CONNECTED: %d\n", new_client_nr);
+ sprintf(msgbuf, "new client %d connected", new_client_nr);
+ sysmsg(msgbuf);
+
+ for (u = &me; u; u = u->next)
+ {
+ if (u->nr == new_client_nr)
+ Error(ERR_EXIT, "multiplayer server sent duplicate player id");
+ else
+ v = u;
+ }
+
+ v->next = u = checked_malloc(sizeof(struct user));
+ u->nr = new_client_nr;
+ u->name[0] = '\0';
+ u->next = NULL;
+
+ stored_player[new_index_nr].connected = TRUE;
+}
+
+static void Handle_OP_PLAYER_DISCONNECTED()
+{
+ struct user *u, *v;
+
+ printf("OP_PLAYER_DISCONNECTED: %d\n", buf[0]);
+ u = finduser(buf[0]);
+ sprintf(msgbuf, "client %d (%s) disconnected",
+ buf[0], get_user_name(buf[0]));
+ sysmsg(msgbuf);
+
+ for (v = &me; v; v = v->next)
+ if (v->next == u)
+ v->next = u->next;
+ free(u);
+}
+
+static void Handle_OP_START_PLAYING()
+{
+ int new_level_nr, new_leveldir_nr;
+ unsigned long new_random_seed;
+ unsigned char *new_leveldir_name;
+
+ /*
+ if (game_status == PLAYING)
+ break;
+ */
+
+ new_level_nr = (buf[2] << 8) + buf[3];
+ new_leveldir_nr = (buf[4] << 8) + buf[5];
+ new_random_seed =
+ (buf[6] << 24) | (buf[7] << 16) | (buf[8] << 8) | (buf[9]);
+ new_leveldir_name = &buf[10];
+
+ printf("OP_START_PLAYING: %d\n", buf[0]);
+ sprintf(msgbuf, "client %d starts game [level %d from levedir %d (%s)]\n",
+ buf[0],
+ new_level_nr,
+ new_leveldir_nr,
+ new_leveldir_name);
+ sysmsg(msgbuf);
+
+
+ if (strcmp(leveldir[new_leveldir_nr].name, new_leveldir_name) != 0)
+ Error(ERR_RETURN, "no such level directory: '%s'",new_leveldir_name);
+
+ leveldir_nr = new_leveldir_nr;
+
+ local_player->leveldir_nr = leveldir_nr;
+ LoadPlayerInfo(PLAYER_LEVEL);
+ SavePlayerInfo(PLAYER_SETUP);
+
+ level_nr = new_level_nr;
+
+ TapeErase();
+ LoadLevelTape(level_nr);
+
+ GetPlayerConfig();
+ LoadLevel(level_nr);
+
+
+
+ if (setup.autorecord_on)
+ TapeStartRecording();
+
+
+
+ if (tape.recording)
+ tape.random_seed = new_random_seed;
+
+ InitRND(new_random_seed);
+
+
+ /*
+ printf("tape.random_seed == %d\n", tape.random_seed);
+ */
+
+ game_status = PLAYING;
+ InitGame();
+}
+
+static void Handle_OP_PAUSE_PLAYING()
+{
+ printf("OP_PAUSE_PLAYING: %d\n", buf[0]);
+ sprintf(msgbuf, "client %d pauses game", buf[0]);
+ sysmsg(msgbuf);
+
+ tape.pausing = TRUE;
+ DrawVideoDisplay(VIDEO_STATE_PAUSE_ON,0);
+}
+
+static void Handle_OP_CONTINUE_PLAYING()
+{
+ printf("OP_CONTINUE_PLAYING: %d\n", buf[0]);
+ sprintf(msgbuf, "client %d continues game", buf[0]);
+ sysmsg(msgbuf);
+
+ tape.pausing = FALSE;
+ DrawVideoDisplay(VIDEO_STATE_PAUSE_OFF,0);
+}
+
+static void Handle_OP_STOP_PLAYING()
+{
+ printf("OP_STOP_PLAYING: %d\n", buf[0]);
+ sprintf(msgbuf, "client %d stops game", buf[0]);
+ sysmsg(msgbuf);
+
+ game_status = MAINMENU;
+ DrawMainMenu();
+}
+
+static void Handle_OP_MOVE_FIGURE(unsigned int len)
+{
+ int frame_nr;
+ int i;
+
+ if (!network_playing)
+ return;
+
+ frame_nr =
+ (buf[2] << 24) | (buf[3] << 16) | (buf[4] << 8) | (buf[5]);
+
+ if (frame_nr != FrameCounter)
+ {
+ Error(ERR_RETURN, "client and servers frame counters out of sync");
+ Error(ERR_RETURN, "frame counter of client is %d", FrameCounter);
+ Error(ERR_RETURN, "frame counter of server is %d", frame_nr);
+ Error(ERR_EXIT, "this should not happen -- please debug");
+ }
+
+ /* copy valid player actions */
+ for (i=0; i<MAX_PLAYERS; i++)
+ network_player_action[i] =
+ (i < len - 6 && stored_player[i].active ? buf[6 + i] : 0);
+
+ network_player_action_received = TRUE;
+
+ /*
+ sprintf(msgbuf, "frame %d: client %d moves player [0x%02x]",
+ FrameCounter, buf[0], buf[2]);
+ sysmsg(msgbuf);
+ */
+}
+
+static void HandleNetworkingMessages()
{
unsigned int len;
- static char msgbuf[300];
while (nread >= 4 && nread >= 4 + readbuf[3])
{
len = readbuf[3];
if (readbuf[0] || readbuf[1] || readbuf[2])
- fatal("Wrong server line length");
+ Error(ERR_EXIT, "wrong network server line length");
memcpy(buf, &readbuf[4], len);
nread -= 4 + len;
- copydown(readbuf, readbuf + 4 + len, nread);
+ memmove(readbuf, readbuf + 4 + len, nread);
switch(buf[1])
{
- case OP_YOUARE:
- printf("OP_YOUARE: %d\n", buf[0]);
+ case OP_BAD_PROTOCOL_VERSION:
+ Handle_OP_BAD_PROTOCOL_VERSION();
break;
- case OP_NEW:
- printf("OP_NEW: %d\n", buf[0]);
- sprintf(msgbuf, "new client %d connected", buf[0]);
- sysmsg(msgbuf);
+ case OP_YOUR_NUMBER:
+ Handle_OP_YOUR_NUMBER();
break;
-
- case OP_GONE:
- printf("OP_GONE: %d\n", buf[0]);
- sprintf(msgbuf, "client %d disconnected", buf[0]);
- sysmsg(msgbuf);
+
+ case OP_NUMBER_WANTED:
+ Handle_OP_NUMBER_WANTED();
break;
- case OP_BADVERS:
- {
- static char tmpbuf[128];
+ case OP_NICKNAME:
+ Handle_OP_NICKNAME(len);
+ break;
- sprintf(tmpbuf, "Protocol version mismatch: server expects %d.%d.x instead of %d.%d.%d\n", buf[2], buf[3], PROT_VERS_1, PROT_VERS_2, PROT_VERS_3);
- fatal(tmpbuf);
- }
+ case OP_PLAYER_CONNECTED:
+ Handle_OP_PLAYER_CONNECTED();
break;
- case OP_PLAY:
- printf("OP_PLAY: %d\n", buf[0]);
- sprintf(msgbuf, "client %d starts game", buf[0]);
- sysmsg(msgbuf);
+ case OP_PLAYER_DISCONNECTED:
+ Handle_OP_PLAYER_DISCONNECTED();
break;
- case OP_PAUSE:
- printf("OP_PAUSE: %d\n", buf[0]);
- sprintf(msgbuf, "client %d pauses game", buf[0]);
- sysmsg(msgbuf);
+ case OP_START_PLAYING:
+ Handle_OP_START_PLAYING();
break;
- case OP_CONT:
- printf("OP_CONT: %d\n", buf[0]);
- sprintf(msgbuf, "client %d continues game", buf[0]);
- sysmsg(msgbuf);
+ case OP_PAUSE_PLAYING:
+ Handle_OP_PAUSE_PLAYING();
+ break;
+
+ case OP_CONTINUE_PLAYING:
+ Handle_OP_CONTINUE_PLAYING();
+ break;
+
+ case OP_STOP_PLAYING:
+ Handle_OP_STOP_PLAYING();
+ break;
+
+ case OP_MOVE_FIGURE:
+ Handle_OP_MOVE_FIGURE(len);
break;
case OP_WON:
sysmsg(msgbuf);
break;
- case OP_NICK:
- printf("OP_NICK: %d\n", buf[0]);
- sprintf(msgbuf, "client %d calls itself \"%s\"", buf[0], &buf[2]);
- sysmsg(msgbuf);
- break;
-
case OP_MSG:
printf("OP_MSG: %d\n", buf[0]);
sprintf(msgbuf, "client %d sends message", buf[0]);
fd_set rfds;
int r = 0;
- if (standalone)
- return;
-
flushbuf();
FD_ZERO(&rfds);
r = select(sfd + 1, &rfds, NULL, NULL, &tv);
if (r < 0 && errno != EINTR)
- {
- perror("select");
- fatal("fatal: select() failed");
- }
+ Error(ERR_EXIT, "HandleNetworking(): select() failed");
if (r < 0)
FD_ZERO(&rfds);
{
int r;
- r = read(sfd, readbuf + nread, BUFLEN - nread);
+ r = read(sfd, readbuf + nread, MAX_BUFFER_SIZE - nread);
if (r < 0)
- fatal("Error reading from server");
+ Error(ERR_EXIT, "error reading from network server");
+
if (r == 0)
- fatal("Connection to server lost");
+ Error(ERR_EXIT, "connection to network server lost");
+
nread += r;
- handlemessages();
+ HandleNetworkingMessages();
}
}
projects / rocksndiamonds.git / blobdiff