-/***********************************************************
-* Rocks'n'Diamonds -- McDuffin Strikes Back! *
-*----------------------------------------------------------*
-* (c) 1995-2002 Artsoft Entertainment *
-* Holger Schemel *
-* Detmolder Strasse 189 *
-* 33604 Bielefeld *
-* Germany *
-* e-mail: info@artsoft.org *
-*----------------------------------------------------------*
-* network.c *
-***********************************************************/
-
-#include "libgame/platform.h"
-
-#if defined(NETWORK_AVALIABLE)
+// ============================================================================
+// Rocks'n'Diamonds - McDuffin Strikes Back!
+// ----------------------------------------------------------------------------
+// (c) 1995-2014 by Artsoft Entertainment
+// Holger Schemel
+// info@artsoft.org
+// http://www.artsoft.org/
+// ----------------------------------------------------------------------------
+// network.c
+// ============================================================================
#include <signal.h>
#include <sys/time.h>
-#if defined(TARGET_SDL)
-#include "main.h"
-#else
-#include <sys/wait.h>
-#include <sys/socket.h>
-#include <netinet/in.h>
-#include <netinet/tcp.h>
-#include <arpa/inet.h>
-#include <netdb.h>
-#endif
-
#include "libgame/libgame.h"
#include "network.h"
#include "netserv.h"
+#include "main.h"
#include "game.h"
#include "tape.h"
#include "files.h"
#include "tools.h"
#include "screens.h"
+#include "init.h"
struct NetworkClientPlayerInfo
{
/* server stuff */
-#if defined(TARGET_SDL)
-static TCPsocket sfd; /* server socket */
+static TCPsocket sfd; /* TCP server socket */
+static UDPsocket udp; /* UDP server socket */
static SDLNet_SocketSet rfds; /* socket set */
-#else
-static int sfd; /* server socket */
-#endif
-static byte realbuffer[512];
-static byte readbuffer[MAX_BUFFER_SIZE], writbuffer[MAX_BUFFER_SIZE];
-static byte *buffer = realbuffer + 4;
-static int nread = 0, nwrite = 0;
+static struct NetworkBuffer *read_buffer = NULL;
+static struct NetworkBuffer *write_buffer = NULL;
+
static boolean stop_network_game = FALSE;
+static boolean stop_network_client = FALSE;
+static char stop_network_client_message[MAX_OUTPUT_LINESIZE + 1];
+
+static struct NetworkLevelInfo network_level;
-static void SendBufferToServer(int size)
+static void DrawNetworkTextExt(char *message, int font_nr, boolean initialize)
{
- if (!options.network)
- return;
+ static int xpos = 0, ypos = 0;
+ static int max_line_width = 0;
+ int font_width = getFontWidth(font_nr);
+ int font_height = getFontHeight(font_nr);
+ int ypos_1 = 120;
+ int ypos_2 = 150;
+
+ if (initialize)
+ {
+ if (game_status == GAME_MODE_LOADING)
+ {
+ max_line_width = WIN_XSIZE;
+
+ xpos = (max_line_width - getTextWidth(message, font_nr)) / 2;
+ ypos = ypos_1;
+
+ DrawText(xpos, ypos, message, font_nr);
+
+ xpos = 0;
+ ypos = ypos_2;
+ }
+ else
+ {
+ max_line_width = SXSIZE;
- realbuffer[0] = realbuffer[1] = realbuffer[2] = 0;
- realbuffer[3] = (byte)size;
- buffer[0] = 0;
+ DrawTextSCentered(ypos_1, font_nr, message);
- if (nwrite + 4 + size >= MAX_BUFFER_SIZE)
- Error(ERR_EXIT, "internal error: network send buffer overflow");
+ /* calculate offset to x position caused by rounding */
+ int max_chars_per_line = max_line_width / font_width;
+ int xoffset = (max_line_width - max_chars_per_line * font_width) / 2;
- memcpy(writbuffer + nwrite, realbuffer, 4 + size);
- nwrite += 4 + size;
+ xpos = SX + xoffset;
+ ypos = SY + ypos_2;
+ }
+
+ Error(ERR_DEBUG, "========== %s ==========", message);
+ }
+ else
+ {
+ int max_chars_per_line = max_line_width / font_width;
+ int max_lines_per_text = 10;
+ int num_lines_spacing = (font_nr == FC_YELLOW ? 1 : 3);
+ int num_lines_printed = DrawTextBuffer(xpos, ypos, message, font_nr,
+ max_chars_per_line, -1,
+ max_lines_per_text, 0, -1,
+ TRUE, TRUE, FALSE);
+
+ ypos += (num_lines_printed + num_lines_spacing) * font_height;
+
+ Error(ERR_DEBUG, "%s", message);
+ }
+
+ BackToFront();
+}
+
+static void DrawNetworkText(char *message)
+{
+ DrawNetworkTextExt(message, FC_YELLOW, FALSE);
+}
+
+static void DrawNetworkText_Success(char *message)
+{
+ DrawNetworkTextExt(message, FC_GREEN, FALSE);
+}
+
+static void DrawNetworkText_Failed(char *message)
+{
+ DrawNetworkTextExt(message, FC_RED, FALSE);
+}
+
+static void DrawNetworkText_Title(char *message)
+{
+ DrawNetworkTextExt(message, FC_GREEN, TRUE);
+}
+
+static void SendNetworkBufferToServer(struct NetworkBuffer *nb)
+{
+ if (!network.enabled)
+ return;
+
+ /* set message length header */
+ putNetwork32BitInteger(nb->buffer, nb->size - 4);
/* directly send the buffer to the network server */
-#if defined(TARGET_SDL)
- SDLNet_TCP_Send(sfd, writbuffer, nwrite);
-#else
- write(sfd, writbuffer, nwrite);
-#endif
- nwrite = 0;
+ SDLNet_TCP_Send(sfd, nb->buffer, nb->size);
}
-struct NetworkClientPlayerInfo *getNetworkPlayer(int player_nr)
+static struct NetworkClientPlayerInfo *getNetworkPlayer(int player_nr)
{
struct NetworkClientPlayerInfo *player = NULL;
return("you");
else
for (player = &first_player; player; player = player->next)
- if (player->nr == player_nr && player->name && strlen(player->name))
+ if (player->nr == player_nr && strlen(player->name) > 0)
return(player->name);
return(EMPTY_PLAYER_NAME);
}
+static boolean hasPathSeparator(char *s)
+{
+ return (strchr(s, '/') != NULL);
+}
+
static void StartNetworkServer(int port)
{
-#if defined(TARGET_SDL)
static int p;
p = port;
- server_thread = SDL_CreateThread(NetworkServerThread, &p);
- network_server = TRUE;
-
+#if defined(TARGET_SDL2)
+ server_thread = SDL_CreateThread(NetworkServerThread,
+ "NetworkServerThread", &p);
#else
-
- switch (fork())
- {
- case 0:
- NetworkServer(port, options.serveronly);
-
- /* never reached */
- exit(0);
-
- case -1:
- Error(ERR_WARN,
- "cannot create network server process - no network playing");
- options.network = FALSE;
- return;
-
- default:
- /* we are parent process -- resume normal operation */
- return;
- }
+ server_thread = SDL_CreateThread(NetworkServerThread, &p);
#endif
+ network_server = TRUE;
}
-#if defined(TARGET_SDL)
boolean ConnectToServer(char *hostname, int port)
{
IPaddress ip;
+ int server_host = 0;
int i;
+ if (read_buffer == NULL)
+ read_buffer = newNetworkBuffer();
+
+ if (write_buffer == NULL)
+ write_buffer = newNetworkBuffer();
+
+ DrawNetworkText_Title("Initializing Network");
+
if (port == 0)
port = DEFAULT_SERVER_PORT;
+ if (hostname == NULL)
+ {
+ // if no hostname given, try to auto-detect network server in local network
+ // by doing a UDP broadcast on the network server port and wait for answer
+
+ SDLNet_SocketSet udp_socket_set = SDLNet_AllocSocketSet(1);
+ if (!udp_socket_set)
+ Error(ERR_EXIT, "SDLNet_AllocSocketSet() failed: %s"), SDLNet_GetError();
+
+ udp = SDLNet_UDP_Open(0);
+ if(!udp)
+ Error(ERR_EXIT, "SDLNet_UDP_Open() failed: %s", SDLNet_GetError());
+
+ if (SDLNet_UDP_AddSocket(udp_socket_set, udp) == -1)
+ Error(ERR_EXIT_NETWORK_SERVER, "SDLNet_TCP_AddSocket() failed: %s"),
+ SDLNet_GetError();
+
+ char *data_ptr = "network server UDB broadcast";
+ int data_len = strlen(data_ptr) + 1;
+ IPaddress ip_address;
+
+ SDLNet_Write32(0xffffffff, &ip_address.host); /* 255.255.255.255 */
+ SDLNet_Write16(port, &ip_address.port);
+
+ UDPpacket packet =
+ {
+ -1,
+ (Uint8 *)data_ptr,
+ data_len,
+ data_len,
+ 0,
+ ip_address
+ };
+
+ SDLNet_UDP_Send(udp, -1, &packet);
+
+ DrawNetworkText("Looking for nearby network server ...");
+
+ /* wait for any nearby network server to answer UDP broadcast */
+ for (i = 0; i < 5; i++)
+ {
+ if (SDLNet_CheckSockets(udp_socket_set, 0) == 1)
+ {
+ int num_packets = SDLNet_UDP_Recv(udp, &packet);
+
+ if (num_packets == 1)
+ {
+ char message[100];
+
+ server_host = SDLNet_Read32(&packet.address.host);
+
+ sprintf(message, "Network server found at %d.%d.%d.%d!",
+ (server_host >> 24) & 0xff,
+ (server_host >> 16) & 0xff,
+ (server_host >> 8) & 0xff,
+ (server_host >> 0) & 0xff);
+
+ DrawNetworkText_Success(message);
+ }
+ else
+ {
+ DrawNetworkText_Failed("No answer from network server!");
+ }
+
+ break;
+ }
+ else
+ {
+ Delay_WithScreenUpdates(100);
+ }
+ }
+
+ if (server_host == 0)
+ DrawNetworkText_Failed("No nearby network server found!");
+ }
+
rfds = SDLNet_AllocSocketSet(1);
if (hostname)
{
+ char message[100];
+
SDLNet_ResolveHost(&ip, hostname, port);
+
if (ip.host == INADDR_NONE)
- Error(ERR_EXIT, "cannot locate host '%s'", hostname);
+ {
+ sprintf(message, "Failed to resolve network server hostname '%s'!",
+ hostname);
+
+ DrawNetworkText_Failed(message);
+
+ return FALSE;
+ }
+ else
+ {
+ server_host = SDLNet_Read32(&ip.host);
+ }
+
+ sprintf(message, "Connecting to network server host %s ...", hostname);
+
+ DrawNetworkText(message);
}
else
{
- SDLNet_Write32(0x7f000001, &ip.host); /* 127.0.0.1 */
- SDLNet_Write16(port, &ip.port);
+ // if no hostname was given and no network server was auto-detected in the
+ // local network, try to connect to a network server at the local host
+ if (server_host == 0)
+ {
+ server_host = 0x7f000001; /* 127.0.0.1 */
+
+ DrawNetworkText("Looking for local network server ...");
+ }
+ else
+ {
+ DrawNetworkText("Connecting to network server ...");
+ }
+
+ SDLNet_Write32(server_host, &ip.host);
+ SDLNet_Write16(port, &ip.port);
}
+ Error(ERR_DEBUG, "trying to connect to network server at %d.%d.%d.%d ...",
+ (server_host >> 24) & 0xff,
+ (server_host >> 16) & 0xff,
+ (server_host >> 8) & 0xff,
+ (server_host >> 0) & 0xff);
+
sfd = SDLNet_TCP_Open(&ip);
if (sfd)
{
SDLNet_TCP_AddSocket(rfds, sfd);
+
+ DrawNetworkText_Success("Successfully connected!");
+
return TRUE;
}
else
{
+ if (hostname)
+ DrawNetworkText_Failed("Failed to connect to network server!");
+ else
+ DrawNetworkText_Failed("No local network server found!");
+
printf("SDLNet_TCP_Open(): %s\n", SDLNet_GetError());
}
if (hostname) /* connect to specified server failed */
return FALSE;
- printf("No rocksndiamonds server on localhost -- starting up one ...\n");
+ DrawNetworkText("Starting new local network server ...");
+
StartNetworkServer(port);
/* wait for server to start up and try connecting several times */
- for (i = 0; i < 6; i++)
+ for (i = 0; i < 30; i++)
{
- Delay(500); /* wait 500 ms == 0.5 seconds */
-
if ((sfd = SDLNet_TCP_Open(&ip))) /* connected */
{
+ DrawNetworkText_Success("Successfully connected to newly started network server!");
+
SDLNet_TCP_AddSocket(rfds, sfd);
+
return TRUE;
}
+
+ Delay_WithScreenUpdates(100);
}
+ DrawNetworkText_Failed("Failed to connect to newly started network server!");
+
/* when reaching this point, connect to newly started server has failed */
return FALSE;
}
-#else
-
-boolean ConnectToServer(char *hostname, int port)
+void SendToServer_PlayerName(char *player_name)
{
- struct sockaddr_in s;
- struct protoent *tcpproto;
- int on = 1, i;
+ initNetworkBufferForWriting(write_buffer, OP_PLAYER_NAME, 0);
- if (hostname)
- {
- if ((s.sin_addr.s_addr = inet_addr(hostname)) == -1)
- {
- struct hostent *host;
+ putNetworkBufferString(write_buffer, player_name);
- if ((host = gethostbyname(hostname)) == NULL)
- Error(ERR_EXIT, "cannot locate host '%s'", hostname);
+ SendNetworkBufferToServer(write_buffer);
- s.sin_addr = *(struct in_addr *)(host->h_addr_list[0]);
- }
- }
- else
- s.sin_addr.s_addr = inet_addr("127.0.0.1"); /* localhost */
-
- if (port == 0)
- port = DEFAULT_SERVER_PORT;
-
- s.sin_port = htons(port);
- s.sin_family = AF_INET;
-
- sfd = socket(PF_INET, SOCK_STREAM, 0);
- if (sfd < 0)
- Error(ERR_EXIT, "out of file descriptors");
-
- if ((tcpproto = getprotobyname("tcp")) != NULL)
- setsockopt(sfd, tcpproto->p_proto, TCP_NODELAY, (char *)&on, sizeof(int));
-
- if (connect(sfd, (struct sockaddr *)&s, sizeof(s)) == 0) /* connected */
- return TRUE;
-
- if (hostname) /* connect to specified server failed */
- return FALSE;
+ Error(ERR_NETWORK_CLIENT, "you set your player name to \"%s\"", player_name);
+}
- printf("No rocksndiamonds server on localhost -- starting up one ...\n");
- StartNetworkServer(port);
+void SendToServer_ProtocolVersion(void)
+{
+ initNetworkBufferForWriting(write_buffer, OP_PROTOCOL_VERSION, 0);
- /* wait for server to start up and try connecting several times */
- for (i = 0; i < 6; i++)
- {
- Delay(500); /* wait 500 ms == 0.5 seconds */
- close(sfd);
+ putNetworkBuffer8BitInteger(write_buffer, PROTOCOL_VERSION_MAJOR);
+ putNetworkBuffer8BitInteger(write_buffer, PROTOCOL_VERSION_MINOR);
+ putNetworkBuffer8BitInteger(write_buffer, PROTOCOL_VERSION_PATCH);
- sfd = socket(PF_INET, SOCK_STREAM, 0);
- if (sfd < 0)
- Error(ERR_EXIT, "out of file descriptors");
+ SendNetworkBufferToServer(write_buffer);
+}
- setsockopt(sfd, tcpproto->p_proto, TCP_NODELAY, (char *)&on, sizeof(int));
+void SendToServer_NrWanted(int nr_wanted)
+{
+ initNetworkBufferForWriting(write_buffer, OP_NUMBER_WANTED, 0);
- if (connect(sfd, (struct sockaddr *)&s, sizeof(s)) >= 0) /* connected */
- return TRUE;
- }
+ putNetworkBuffer8BitInteger(write_buffer, nr_wanted);
- /* when reaching this point, connect to newly started server has failed */
- return FALSE;
+ SendNetworkBufferToServer(write_buffer);
}
-#endif /* defined(TARGET_SDL) */
-void SendToServer_PlayerName(char *player_name)
+void SendToServer_LevelFile(void)
{
- int len_player_name = strlen(player_name);
+ initNetworkBufferForWriting(write_buffer, OP_LEVEL_FILE, 0);
- buffer[1] = OP_PLAYER_NAME;
- memcpy(&buffer[2], player_name, len_player_name);
- SendBufferToServer(2 + len_player_name);
- Error(ERR_NETWORK_CLIENT, "you set your player name to \"%s\"", player_name);
-}
+ putNetworkBufferString( write_buffer, leveldir_current->identifier);
+ putNetworkBuffer16BitInteger(write_buffer, level.file_info.nr);
+ putNetworkBuffer8BitInteger( write_buffer, level.file_info.type);
+ putNetworkBuffer8BitInteger( write_buffer, level.file_info.packed);
+ putNetworkBufferString( write_buffer, level.file_info.basename);
+ putNetworkBufferFile( write_buffer, level.file_info.filename);
+ putNetworkBuffer8BitInteger( write_buffer, level.use_custom_template);
-void SendToServer_ProtocolVersion()
-{
- buffer[1] = OP_PROTOCOL_VERSION;
- buffer[2] = PROTOCOL_VERSION_1;
- buffer[3] = PROTOCOL_VERSION_2;
- buffer[4] = PROTOCOL_VERSION_3;
+ if (level.use_custom_template)
+ {
+ putNetworkBufferString(write_buffer, level_template.file_info.basename);
+ putNetworkBufferFile( write_buffer, level_template.file_info.filename);
+ }
- SendBufferToServer(5);
-}
+ SendNetworkBufferToServer(write_buffer);
-void SendToServer_NrWanted(int nr_wanted)
-{
- buffer[1] = OP_NUMBER_WANTED;
- buffer[2] = nr_wanted;
+ setString(&network_level.leveldir_identifier, leveldir_current->identifier);
- SendBufferToServer(3);
+ /* the sending client does not use network level files (but the real ones) */
+ network_level.use_network_level_files = FALSE;
+
+#if 0
+ printf("::: '%s'\n", leveldir_current->identifier);
+ printf("::: '%d'\n", level.file_info.nr);
+ printf("::: '%d'\n", level.file_info.type);
+ printf("::: '%d'\n", level.file_info.packed);
+ printf("::: '%s'\n", level.file_info.basename);
+ printf("::: '%s'\n", level.file_info.filename);
+
+ if (level.use_custom_template)
+ printf("::: '%s'\n", level_template.file_info.filename);
+#endif
}
-void SendToServer_StartPlaying()
+void SendToServer_StartPlaying(void)
{
- unsigned long new_random_seed = InitRND(NEW_RANDOMIZE);
-
- int dummy = 0; /* !!! HAS NO MEANING ANYMORE !!! */
- /* the name of the level must be enough */
-
- buffer[1] = OP_START_PLAYING;
- buffer[2] = (byte)(level_nr >> 8);
- buffer[3] = (byte)(level_nr & 0xff);
- buffer[4] = (byte)(dummy >> 8);
- buffer[5] = (byte)(dummy & 0xff);
+ unsigned int new_random_seed = InitRND(level.random_seed);
- buffer[6] = (unsigned char)((new_random_seed >> 24) & 0xff);
- buffer[7] = (unsigned char)((new_random_seed >> 16) & 0xff);
- buffer[8] = (unsigned char)((new_random_seed >> 8) & 0xff);
- buffer[9] = (unsigned char)((new_random_seed >> 0) & 0xff);
+ initNetworkBufferForWriting(write_buffer, OP_START_PLAYING, 0);
- strcpy((char *)&buffer[10], leveldir_current->identifier);
+ putNetworkBufferString( write_buffer, leveldir_current->identifier);
+ putNetworkBuffer16BitInteger(write_buffer, level_nr);
+ putNetworkBuffer32BitInteger(write_buffer, new_random_seed);
- SendBufferToServer(10 + strlen(leveldir_current->identifier) + 1);
+ SendNetworkBufferToServer(write_buffer);
}
-void SendToServer_PausePlaying()
+void SendToServer_PausePlaying(void)
{
- buffer[1] = OP_PAUSE_PLAYING;
+ initNetworkBufferForWriting(write_buffer, OP_PAUSE_PLAYING, 0);
- SendBufferToServer(2);
+ SendNetworkBufferToServer(write_buffer);
}
-void SendToServer_ContinuePlaying()
+void SendToServer_ContinuePlaying(void)
{
- buffer[1] = OP_CONTINUE_PLAYING;
+ initNetworkBufferForWriting(write_buffer, OP_CONTINUE_PLAYING, 0);
- SendBufferToServer(2);
+ SendNetworkBufferToServer(write_buffer);
}
void SendToServer_StopPlaying(int cause_for_stopping)
{
- buffer[1] = OP_STOP_PLAYING;
- buffer[2] = cause_for_stopping;
+ initNetworkBufferForWriting(write_buffer, OP_STOP_PLAYING, 0);
- SendBufferToServer(3);
+ putNetworkBuffer8BitInteger(write_buffer, cause_for_stopping);
+
+ SendNetworkBufferToServer(write_buffer);
}
void SendToServer_MovePlayer(byte player_action)
{
- buffer[1] = OP_MOVE_PLAYER;
- buffer[2] = player_action;
+ initNetworkBufferForWriting(write_buffer, OP_MOVE_PLAYER, 0);
+
+ putNetworkBuffer8BitInteger(write_buffer, player_action);
- SendBufferToServer(3);
+ SendNetworkBufferToServer(write_buffer);
}
-static void Handle_OP_BAD_PROTOCOL_VERSION()
+static void Handle_OP_BAD_PROTOCOL_VERSION(void)
{
+ int protocol_version_major = getNetworkBuffer8BitInteger(read_buffer);
+ int protocol_version_minor = getNetworkBuffer8BitInteger(read_buffer);
+
Error(ERR_WARN, "protocol version mismatch");
- Error(ERR_EXIT, "server expects %d.%d.x instead of %d.%d.%d",
- buffer[2], buffer[3],
- PROTOCOL_VERSION_1, PROTOCOL_VERSION_2, PROTOCOL_VERSION_3);
+ Error(ERR_WARN, "server expects %d.%d.x instead of %d.%d.%d",
+ protocol_version_major,
+ protocol_version_minor,
+ PROTOCOL_VERSION_MAJOR,
+ PROTOCOL_VERSION_MINOR,
+ PROTOCOL_VERSION_PATCH);
+
+ sprintf(stop_network_client_message, "Network protocol version mismatch! Server expects version %d.%d.x instead of %d.%d.%d!",
+ protocol_version_major,
+ protocol_version_minor,
+ PROTOCOL_VERSION_MAJOR,
+ PROTOCOL_VERSION_MINOR,
+ PROTOCOL_VERSION_PATCH);
+
+ stop_network_client = TRUE;
}
-static void Handle_OP_YOUR_NUMBER()
+static void Handle_OP_YOUR_NUMBER(void)
{
- int new_client_nr = buffer[2];
+ int old_client_nr = getNetworkBuffer8BitInteger(read_buffer);
+ int new_client_nr = getNetworkBuffer8BitInteger(read_buffer);
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", buffer[0]);
+ printf("OP_YOUR_NUMBER: %d\n", old_client_nr);
first_player.nr = new_client_nr;
if (old_local_player != new_local_player)
{
- /* copy existing player settings and change to new player */
+ /* set relevant player settings and change to new player */
- *new_local_player = *old_local_player;
- old_local_player->connected = FALSE;
local_player = new_local_player;
+
+ old_local_player->connected_locally = FALSE;
+ new_local_player->connected_locally = TRUE;
+
+ old_local_player->connected_network = FALSE;
+ new_local_player->connected_network = TRUE;
}
if (first_player.nr > MAX_PLAYERS)
Error(ERR_EXIT, "sorry, more than %d players not allowed", MAX_PLAYERS);
Error(ERR_NETWORK_CLIENT, "you get client # %d", new_client_nr);
+
+ stored_player[new_index_nr].connected_network = TRUE;
}
-static void Handle_OP_NUMBER_WANTED()
+static void Handle_OP_NUMBER_WANTED(void)
{
- int client_nr_wanted = buffer[2];
- int old_client_nr = buffer[0];
- int new_client_nr = buffer[3];
+ int old_client_nr = getNetworkBuffer8BitInteger(read_buffer);
+ int client_nr_wanted = getNetworkBuffer8BitInteger(read_buffer);
+ int new_client_nr = getNetworkBuffer8BitInteger(read_buffer);
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", buffer[0]);
+ printf("OP_NUMBER_WANTED: %d\n", old_client_nr);
if (new_client_nr == client_nr_wanted) /* switching succeeded */
{
if (old_client_nr != new_client_nr)
{
- /* copy existing player settings and change to new player */
+ /* set relevant player settings and change to new player */
- *new_player = *old_player;
- old_player->connected = FALSE;
+ old_player->connected_network = FALSE;
+ new_player->connected_network = TRUE;
}
player = getNetworkPlayer(old_client_nr);
player->nr = new_client_nr;
if (old_player == local_player) /* local player switched */
+ {
local_player = new_player;
+
+ old_player->connected_locally = FALSE;
+ new_player->connected_locally = TRUE;
+ }
}
else if (old_client_nr == first_player.nr) /* failed -- local player? */
{
- char *color[] = { "yellow", "red", "green", "blue" };
char request[100];
- sprintf(request, "Sorry ! %s player still exists ! You are %s player !",
- color[index_nr_wanted], color[new_index_nr]);
+ sprintf(request, "Sorry! Player %d already exists! You are player %d!",
+ index_nr_wanted + 1, new_index_nr + 1);
+
Request(request, REQ_CONFIRM);
Error(ERR_NETWORK_CLIENT, "cannot switch -- you keep client # %d",
new_client_nr);
}
+
+ if (game_status == GAME_MODE_MAIN)
+ DrawNetworkPlayers();
}
-static void Handle_OP_PLAYER_NAME(unsigned int len)
+static void Handle_OP_PLAYER_NAME(void)
{
- struct NetworkClientPlayerInfo *player;
- int player_nr = (int)buffer[0];
+ int player_nr = getNetworkBuffer8BitInteger(read_buffer);
+ char *player_name = getNetworkBufferString(read_buffer);
+ struct NetworkClientPlayerInfo *player = getNetworkPlayer(player_nr);
printf("OP_PLAYER_NAME: %d\n", player_nr);
- player = getNetworkPlayer(player_nr);
- buffer[len] = 0;
+
+ strncpy(player->name, player_name, MAX_PLAYER_NAME_LEN);
+ player->name[MAX_PLAYER_NAME_LEN] = '\0';
+
Error(ERR_NETWORK_CLIENT, "client %d calls itself \"%s\"",
- buffer[0], &buffer[2]);
- strncpy(player->name, (char *)&buffer[2], MAX_PLAYER_NAME_LEN);
+ player_nr, player->name);
}
-static void Handle_OP_PLAYER_CONNECTED()
+static void Handle_OP_PLAYER_CONNECTED(void)
{
struct NetworkClientPlayerInfo *player, *last_player = NULL;
- int new_client_nr = (int)buffer[0];
+ int new_client_nr = getNetworkBuffer8BitInteger(read_buffer);
int new_index_nr = new_client_nr - 1;
printf("OP_PLAYER_CONNECTED: %d\n", new_client_nr);
player->name[0] = '\0';
player->next = NULL;
- stored_player[new_index_nr].connected = TRUE;
+ stored_player[new_index_nr].connected_network = TRUE;
}
-static void Handle_OP_PLAYER_DISCONNECTED()
+static void Handle_OP_PLAYER_DISCONNECTED(void)
{
struct NetworkClientPlayerInfo *player, *player_disconnected;
- int player_nr = (int)buffer[0];
+ int player_nr = getNetworkBuffer8BitInteger(read_buffer);
+ int index_nr = player_nr - 1;
printf("OP_PLAYER_DISCONNECTED: %d\n", player_nr);
player_disconnected = getNetworkPlayer(player_nr);
Error(ERR_NETWORK_CLIENT, "client %d (%s) disconnected",
- player_nr, getNetworkPlayerName(buffer[0]));
+ player_nr, getNetworkPlayerName(player_nr));
for (player = &first_player; player; player = player->next)
if (player->next == player_disconnected)
player->next = player_disconnected->next;
free(player_disconnected);
+
+ stored_player[index_nr].connected_locally = FALSE;
+ stored_player[index_nr].connected_network = FALSE;
+
+ if (game_status == GAME_MODE_PLAYING)
+ {
+ char message[100];
+
+ sprintf(message, "Player %d left network server! Network game stopped!",
+ player_nr);
+
+ Request(message, REQ_CONFIRM | REQ_STAY_CLOSED);
+
+ SetGameStatus(GAME_MODE_MAIN);
+
+ DrawMainMenu();
+ }
+ else if (game_status == GAME_MODE_MAIN)
+ {
+ DrawNetworkPlayers();
+ }
}
-static void Handle_OP_START_PLAYING()
+static void Handle_OP_START_PLAYING(void)
{
- LevelDirTree *new_leveldir;
- int new_level_nr;
- int dummy;
- unsigned long new_random_seed;
- char *new_leveldir_identifier;
-
- new_level_nr = (buffer[2] << 8) + buffer[3];
- dummy = (buffer[4] << 8) + buffer[5]; /* (obsolete) */
- new_random_seed =
- (buffer[6] << 24) | (buffer[7] << 16) | (buffer[8] << 8) | (buffer[9]);
- new_leveldir_identifier = (char *)&buffer[10];
+ int player_nr = getNetworkBuffer8BitInteger(read_buffer);
+ char *new_leveldir_identifier = getNetworkBufferString(read_buffer);
+ int new_level_nr = getNetworkBuffer16BitInteger(read_buffer);
+ unsigned int new_random_seed = getNetworkBuffer32BitInteger(read_buffer);
- new_leveldir = getTreeInfoFromIdentifier(leveldir_first,
- new_leveldir_identifier);
- if (new_leveldir == NULL)
+ if (!strEqual(new_leveldir_identifier, network_level.leveldir_identifier))
{
Error(ERR_WARN, "no such level identifier: '%s'", new_leveldir_identifier);
- new_leveldir = leveldir_first;
- Error(ERR_WARN, "using default level set: '%s'", new_leveldir->identifier);
+ stop_network_game = TRUE;
+
+ return;
}
- printf("OP_START_PLAYING: %d\n", buffer[0]);
+ printf("OP_START_PLAYING: %d\n", player_nr);
Error(ERR_NETWORK_CLIENT,
"client %d starts game [level %d from level identifier '%s']\n",
- buffer[0], new_level_nr, new_leveldir->identifier);
+ player_nr, new_level_nr, new_leveldir_identifier);
- leveldir_current = new_leveldir;
- level_nr = new_level_nr;
+ LevelDirTree *new_leveldir =
+ getTreeInfoFromIdentifier(leveldir_first, new_leveldir_identifier);
- TapeErase();
- LoadTape(level_nr);
- LoadLevel(level_nr);
+ if (new_leveldir != NULL)
+ {
+ leveldir_current = new_leveldir;
+ level_nr = new_level_nr;
+ }
-#if 1
- StartGameActions(FALSE, setup.autorecord, new_random_seed);
-#else
- if (setup.autorecord)
- TapeStartRecording();
+ /* needed if level set of network game changed graphics, sounds or music */
+ ReloadCustomArtwork(0);
- if (tape.recording)
- tape.random_seed = new_random_seed;
+ TapeErase();
- InitRND(new_random_seed);
+ if (network_level.use_network_level_files)
+ LoadNetworkLevel(&network_level);
+ else
+ LoadLevel(level_nr);
- game_status = GAME_MODE_PLAYING;
- InitGame();
-#endif
+ StartGameActions(FALSE, setup.autorecord, new_random_seed);
}
-static void Handle_OP_PAUSE_PLAYING()
+static void Handle_OP_PAUSE_PLAYING(void)
{
- printf("OP_PAUSE_PLAYING: %d\n", buffer[0]);
- Error(ERR_NETWORK_CLIENT, "client %d pauses game", buffer[0]);
+ int player_nr = getNetworkBuffer8BitInteger(read_buffer);
+
+ printf("OP_PAUSE_PLAYING: %d\n", player_nr);
+ Error(ERR_NETWORK_CLIENT, "client %d pauses game", player_nr);
- tape.pausing = TRUE;
- DrawVideoDisplay(VIDEO_STATE_PAUSE_ON,0);
+ if (game_status == GAME_MODE_PLAYING)
+ {
+ tape.pausing = TRUE;
+ DrawVideoDisplay(VIDEO_STATE_PAUSE_ON, 0);
+ }
}
-static void Handle_OP_CONTINUE_PLAYING()
+static void Handle_OP_CONTINUE_PLAYING(void)
{
- printf("OP_CONTINUE_PLAYING: %d\n", buffer[0]);
- Error(ERR_NETWORK_CLIENT, "client %d continues game", buffer[0]);
+ int player_nr = getNetworkBuffer8BitInteger(read_buffer);
+
+ printf("OP_CONTINUE_PLAYING: %d\n", player_nr);
+ Error(ERR_NETWORK_CLIENT, "client %d continues game", player_nr);
- tape.pausing = FALSE;
- DrawVideoDisplay(VIDEO_STATE_PAUSE_OFF,0);
+ if (game_status == GAME_MODE_PLAYING)
+ {
+ tape.pausing = FALSE;
+ DrawVideoDisplay(VIDEO_STATE_PAUSE_OFF, 0);
+ }
}
-static void Handle_OP_STOP_PLAYING()
+static void Handle_OP_STOP_PLAYING(void)
{
- printf("OP_STOP_PLAYING: %d [%d]\n", buffer[0], buffer[2]);
- Error(ERR_NETWORK_CLIENT, "client %d stops game [%d]", buffer[0], buffer[2]);
+ int client_nr = getNetworkBuffer8BitInteger(read_buffer);
+ int cause_for_stopping = getNetworkBuffer8BitInteger(read_buffer);
+
+ printf("OP_STOP_PLAYING: %d [%d]\n", client_nr, cause_for_stopping);
+ Error(ERR_NETWORK_CLIENT, "client %d stops game [%d]",
+ client_nr, cause_for_stopping);
if (game_status == GAME_MODE_PLAYING)
{
- if (buffer[2] == NETWORK_STOP_BY_PLAYER)
- Request("Network game stopped by player!", REQ_CONFIRM);
- else if (buffer[2] == NETWORK_STOP_BY_ERROR)
- Request("Network game stopped due to internal error!", REQ_CONFIRM);
+ int index_nr = client_nr - 1;
+ struct PlayerInfo *client_player = &stored_player[index_nr];
+ boolean stopped_by_remote_player = (!client_player->connected_locally);
+ char message[100];
+
+ if (cause_for_stopping == NETWORK_STOP_BY_PLAYER)
+ sprintf(message, "Network game stopped by player %d!", client_nr);
else
- Request("Network game stopped !", REQ_CONFIRM);
- }
+ sprintf(message, (cause_for_stopping == NETWORK_STOP_BY_ERROR ?
+ "Network game stopped due to internal error!" :
+ "Network game stopped!"));
+
+ if (cause_for_stopping != NETWORK_STOP_BY_PLAYER ||
+ stopped_by_remote_player)
+ Request(message, REQ_CONFIRM | REQ_STAY_CLOSED);
+
+ SetGameStatus(GAME_MODE_MAIN);
- game_status = GAME_MODE_MAIN;
- DrawMainMenu();
+ DrawMainMenu();
+ }
}
-static void Handle_OP_MOVE_PLAYER(unsigned int len)
+static void Handle_OP_MOVE_PLAYER(void)
{
- int server_frame_counter;
+ int player_nr = getNetworkBuffer8BitInteger(read_buffer);
+ int server_frame_counter = getNetworkBuffer32BitInteger(read_buffer);
int i;
if (!network_playing)
return;
- server_frame_counter =
- (buffer[2] << 24) | (buffer[3] << 16) | (buffer[4] << 8) | (buffer[5]);
-
-#if 0
- Error(ERR_NETWORK_CLIENT, "receiving server frame counter value %d [%d]",
- server_frame_counter, FrameCounter);
-#endif
-
if (server_frame_counter != 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", server_frame_counter);
-
-#if 1
- Error(ERR_RETURN, "this should not happen -- please debug");
+ Error(ERR_INFO, "frame counters of client %d and server out of sync",
+ player_nr);
+ Error(ERR_INFO, "frame counter of client is %d", FrameCounter);
+ Error(ERR_INFO, "frame counter of server is %d", server_frame_counter);
+ Error(ERR_INFO, "this should not happen -- please debug");
stop_network_game = TRUE;
return;
-#else
- Error(ERR_EXIT, "this should not happen -- please debug");
-#endif
}
- /* copy valid player actions */
+ /* copy valid player actions (will be set to 0 for not connected players) */
for (i = 0; i < MAX_PLAYERS; i++)
stored_player[i].effective_action =
- (i < len - 6 && stored_player[i].active ? buffer[6 + i] : 0);
+ getNetworkBuffer8BitInteger(read_buffer);
network_player_action_received = TRUE;
}
-static void HandleNetworkingMessages()
+static void Handle_OP_BROADCAST_MESSAGE(void)
+{
+ int player_nr = getNetworkBuffer8BitInteger(read_buffer);
+
+ printf("OP_BROADCAST_MESSAGE: %d\n", player_nr);
+ Error(ERR_NETWORK_CLIENT, "client %d sends message", player_nr);
+}
+
+static void Handle_OP_LEVEL_FILE(void)
{
- unsigned int message_length;
+ int player_nr = getNetworkBuffer8BitInteger(read_buffer);
+ char *leveldir_identifier;
+ char *network_level_dir;
+ struct LevelFileInfo *file_info = &network_level.file_info;
+ struct LevelFileInfo *tmpl_info = &network_level.tmpl_info;
+ boolean use_custom_template;
+
+ setString(&network_level.leveldir_identifier, NULL);
+ setString(&network_level.file_info.basename, NULL);
+ setString(&network_level.file_info.filename, NULL);
+ setString(&network_level.tmpl_info.basename, NULL);
+ setString(&network_level.tmpl_info.filename, NULL);
+
+ printf("OP_LEVEL_FILE: %d\n", player_nr);
+
+ leveldir_identifier = getStringCopy(getNetworkBufferString(read_buffer));
+
+ if (hasPathSeparator(leveldir_identifier))
+ Error(ERR_EXIT, "protocol error: invalid filename from network client");
+
+ InitNetworkLevelDirectory(leveldir_identifier);
+
+ network_level_dir = getNetworkLevelDir(leveldir_identifier);
+
+ file_info->nr = getNetworkBuffer16BitInteger(read_buffer);
+ file_info->type = getNetworkBuffer8BitInteger(read_buffer);
+ file_info->packed = getNetworkBuffer8BitInteger(read_buffer);
+ file_info->basename = getStringCopy(getNetworkBufferString(read_buffer));
+ file_info->filename = getPath2(network_level_dir, file_info->basename);
+
+ if (hasPathSeparator(file_info->basename))
+ Error(ERR_EXIT, "protocol error: invalid filename from network client");
+
+ getNetworkBufferFile(read_buffer, file_info->filename);
+
+ use_custom_template = getNetworkBuffer8BitInteger(read_buffer);
+ if (use_custom_template)
+ {
+ *tmpl_info = *file_info;
+
+ tmpl_info->basename = getStringCopy(getNetworkBufferString(read_buffer));
+ tmpl_info->filename = getPath2(network_level_dir, tmpl_info->basename);
+
+ if (hasPathSeparator(tmpl_info->basename))
+ Error(ERR_EXIT, "protocol error: invalid filename from network client");
+
+ getNetworkBufferFile(read_buffer, tmpl_info->filename);
+ }
+
+ network_level.leveldir_identifier = leveldir_identifier;
+ network_level.use_custom_template = use_custom_template;
+
+ /* the receiving client(s) use(s) the transferred network level files */
+ network_level.use_network_level_files = TRUE;
+#if 0
+ printf("::: '%s'\n", leveldir_identifier);
+ printf("::: '%d'\n", file_info->nr);
+ printf("::: '%d'\n", file_info->type);
+ printf("::: '%d'\n", file_info->packed);
+ printf("::: '%s'\n", file_info->basename);
+ printf("::: '%s'\n", file_info->filename);
+
+ if (use_custom_template)
+ printf("::: '%s'\n", tmpl_info->filename);
+#endif
+}
+
+static void HandleNetworkingMessage(void)
+{
stop_network_game = FALSE;
- while (nread >= 4 && nread >= 4 + readbuffer[3])
+ initNetworkBufferForReading(read_buffer);
+
+ int message_type = getNetworkBuffer8BitInteger(read_buffer);
+
+ switch (message_type)
{
- message_length = readbuffer[3];
- if (readbuffer[0] || readbuffer[1] || readbuffer[2])
- Error(ERR_EXIT, "wrong network server line length");
+ case OP_BAD_PROTOCOL_VERSION:
+ Handle_OP_BAD_PROTOCOL_VERSION();
+ break;
- memcpy(buffer, &readbuffer[4], message_length);
- nread -= 4 + message_length;
- memmove(readbuffer, readbuffer + 4 + message_length, nread);
+ case OP_YOUR_NUMBER:
+ Handle_OP_YOUR_NUMBER();
+ break;
- switch(buffer[1])
- {
- case OP_BAD_PROTOCOL_VERSION:
- Handle_OP_BAD_PROTOCOL_VERSION();
- break;
+ case OP_NUMBER_WANTED:
+ Handle_OP_NUMBER_WANTED();
+ break;
- case OP_YOUR_NUMBER:
- Handle_OP_YOUR_NUMBER();
- break;
+ case OP_PLAYER_NAME:
+ Handle_OP_PLAYER_NAME();
+ break;
- case OP_NUMBER_WANTED:
- Handle_OP_NUMBER_WANTED();
- break;
+ case OP_PLAYER_CONNECTED:
+ Handle_OP_PLAYER_CONNECTED();
+ break;
- case OP_PLAYER_NAME:
- Handle_OP_PLAYER_NAME(message_length);
- break;
+ case OP_PLAYER_DISCONNECTED:
+ Handle_OP_PLAYER_DISCONNECTED();
+ break;
- case OP_PLAYER_CONNECTED:
- Handle_OP_PLAYER_CONNECTED();
- break;
-
- case OP_PLAYER_DISCONNECTED:
- Handle_OP_PLAYER_DISCONNECTED();
- break;
+ case OP_START_PLAYING:
+ Handle_OP_START_PLAYING();
+ break;
- case OP_START_PLAYING:
- Handle_OP_START_PLAYING();
- break;
+ case OP_PAUSE_PLAYING:
+ Handle_OP_PAUSE_PLAYING();
+ break;
- case OP_PAUSE_PLAYING:
- Handle_OP_PAUSE_PLAYING();
- break;
+ case OP_CONTINUE_PLAYING:
+ Handle_OP_CONTINUE_PLAYING();
+ break;
- case OP_CONTINUE_PLAYING:
- Handle_OP_CONTINUE_PLAYING();
- break;
+ case OP_STOP_PLAYING:
+ Handle_OP_STOP_PLAYING();
+ break;
- case OP_STOP_PLAYING:
- Handle_OP_STOP_PLAYING();
- break;
+ case OP_MOVE_PLAYER:
+ Handle_OP_MOVE_PLAYER();
+ break;
- case OP_MOVE_PLAYER:
- Handle_OP_MOVE_PLAYER(message_length);
- break;
+ case OP_BROADCAST_MESSAGE:
+ Handle_OP_BROADCAST_MESSAGE();
+ break;
- case OP_BROADCAST_MESSAGE:
- printf("OP_BROADCAST_MESSAGE: %d\n", buffer[0]);
- Error(ERR_NETWORK_CLIENT, "client %d sends message", buffer[0]);
- break;
- }
+ case OP_LEVEL_FILE:
+ Handle_OP_LEVEL_FILE();
+ break;
+
+ default:
+ if (options.verbose)
+ Error(ERR_NETWORK_CLIENT,
+ "unknown opcode %d from server", message_type);
}
fflush(stdout);
SendToServer_StopPlaying(NETWORK_STOP_BY_ERROR);
}
-/* TODO */
+static char *HandleNetworkingPackets(void)
+{
+ while (1)
+ {
+ /* ---------- check network server for activity ---------- */
+
+ int num_active_sockets = SDLNet_CheckSockets(rfds, 0);
+
+ if (num_active_sockets < 0)
+ return "Error checking network sockets!";
+
+ if (num_active_sockets == 0)
+ break; // no active sockets, stop here
-void HandleNetworking()
+ /* ---------- read packets from network server ---------- */
+
+ initNetworkBufferForReceiving(read_buffer);
+
+ int num_bytes = receiveNetworkBufferPacket(read_buffer, sfd);
+
+ if (num_bytes < 0)
+ return "Error reading from network server!";
+
+ if (num_bytes == 0)
+ return "Connection to network server lost!";
+
+ HandleNetworkingMessage();
+
+ if (stop_network_client)
+ return stop_network_client_message;
+ }
+
+ return NULL;
+}
+
+static void FreeNetworkClientPlayerInfo(struct NetworkClientPlayerInfo *player)
{
-#if !defined(TARGET_SDL)
- static struct timeval tv = { 0, 0 };
- fd_set rfds;
-#endif
- int r = 0;
+ if (player == NULL)
+ return;
- do
- {
-#if defined(TARGET_SDL)
- if ((r = SDLNet_CheckSockets(rfds, 1)) < 0)
- Error(ERR_EXIT, "HandleNetworking(): SDLNet_CheckSockets() failed");
+ if (player->next)
+ FreeNetworkClientPlayerInfo(player->next);
-#else
+ checked_free(player);
+}
- FD_ZERO(&rfds);
- FD_SET(sfd, &rfds);
+static void HandleNetworkingDisconnect(void)
+{
+ int i;
- r = select(sfd + 1, &rfds, NULL, NULL, &tv);
+ SDLNet_TCP_DelSocket(rfds, sfd);
+ SDLNet_TCP_Close(sfd);
- if (r < 0 && errno != EINTR)
- Error(ERR_EXIT, "HandleNetworking(): select() failed");
+ network_playing = FALSE;
- if (r < 0)
- FD_ZERO(&rfds);
-#endif
+ network.enabled = FALSE;
+ network.connected = FALSE;
-#if defined(TARGET_SDL)
- if (r > 0)
-#else
- if (FD_ISSET(sfd, &rfds))
-#endif
- {
-#if defined(TARGET_SDL)
- r = SDLNet_TCP_Recv(sfd, readbuffer + nread, 1);
-#else
- r = read(sfd, readbuffer + nread, MAX_BUFFER_SIZE - nread);
-#endif
+ setup.network_mode = FALSE;
+
+ for (i = 0; i < MAX_PLAYERS; i++)
+ stored_player[i].connected_network = FALSE;
+
+ FreeNetworkClientPlayerInfo(first_player.next);
+
+ first_player.nr = 0;
+ first_player.next = NULL;
+}
+
+void HandleNetworking(void)
+{
+ char *error_message = HandleNetworkingPackets();
- if (r < 0)
- Error(ERR_EXIT, "error reading from network server");
+ if (error_message != NULL)
+ {
+ HandleNetworkingDisconnect();
+
+ if (game_status == GAME_MODE_PLAYING)
+ {
+ Request(error_message, REQ_CONFIRM | REQ_STAY_CLOSED);
- if (r == 0)
- Error(ERR_EXIT, "connection to network server lost");
+ SetGameStatus(GAME_MODE_MAIN);
- nread += r;
+ DrawMainMenu();
+ }
+ else
+ {
+ Request(error_message, REQ_CONFIRM);
- HandleNetworkingMessages();
+ if (game_status == GAME_MODE_MAIN)
+ ClearNetworkPlayers();
}
}
- while (r > 0);
}
-#endif /* PLATFORM_UNIX */
+void DisconnectFromNetworkServer(void)
+{
+ DrawNetworkText_Title("Terminating Network");
+ DrawNetworkText("Disconnecting from network server ...");
+
+ HandleNetworkingDisconnect();
+
+ DrawNetworkText_Success("Successfully disconnected!");
+}
projects / rocksndiamonds.git / blobdiff