X-Git-Url: https://git.artsoft.org/?a=blobdiff_plain;f=src%2Fnetwork.c;h=890f405f91662423040114fc731f1db90c322af7;hb=40a487dcc5d3028343ff9123a72b8b3839a42861;hp=033bed0d7c47115f978b9711ca50b53b92945c15;hpb=3abeab753b05c534b4061ad20a1de50a39da6daa;p=rocksndiamonds.git diff --git a/src/network.c b/src/network.c index 033bed0d..890f405f 100644 --- a/src/network.c +++ b/src/network.c @@ -26,69 +26,50 @@ #include #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; @@ -96,7 +77,7 @@ void u_sleep(int i) select(0, NULL, NULL, NULL, &tm); } -void flushbuf() +static void flushbuf() { if (nwrite) { @@ -105,61 +86,77 @@ void flushbuf() } } -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) { - char *options[2]; - int n = 0; + struct user *u; - options[0] = options[1] = NULL; - if (norestart) - options[n++] = "-norestart"; - if (nospeedup) - options[n++] = "-nospeedup"; + 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) +{ + struct user *u; + + 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_WARN, + "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; @@ -172,7 +169,8 @@ BOOL ConnectToServer(char *host, int port) { 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]); } } @@ -184,9 +182,11 @@ BOOL ConnectToServer(char *host, int port) 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)); @@ -195,106 +195,461 @@ BOOL ConnectToServer(char *host, int port) 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_WARN, "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; + + 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; + } + + 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_WARN, "no such level directory: '%s'",new_leveldir_name); + + leveldir_nr = new_leveldir_nr; + + /* + local_player->leveldir_nr = leveldir_nr; + */ + + + /* + SaveLevelSetup(); + */ + + /* + LoadPlayerInfo(PLAYER_LEVEL); + SavePlayerInfo(PLAYER_SETUP); + */ + + + level_nr = new_level_nr; + + TapeErase(); + LoadTape(level_nr); + + /* + GetPlayerConfig(); + */ + + LoadLevel(level_nr); + + + + if (setup.autorecord) + 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= 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: @@ -309,12 +664,6 @@ void handlemessages() 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]); @@ -341,9 +690,6 @@ void HandleNetworking() fd_set rfds; int r = 0; - if (standalone) - return; - flushbuf(); FD_ZERO(&rfds); @@ -352,10 +698,7 @@ void HandleNetworking() 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); @@ -364,14 +707,16 @@ void HandleNetworking() { 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(); } }