#include "main.h"
-static int clients = 0;
-static int onceonly = 0;
+static int num_clients = 0;
+static boolean run_server_only_once = FALSE;
struct NetworkServerPlayerInfo
{
TCPsocket fd;
- char player_name[16];
- unsigned char number;
- struct NetworkServerPlayerInfo *next;
- char active;
- char introduced;
- unsigned char readbuffer[MAX_BUFFER_SIZE];
- unsigned char writbuffer[MAX_BUFFER_SIZE];
- int nread, nwrite;
+ char player_name[MAX_PLAYER_NAME_LEN + 1];
+ int number;
+ boolean active;
+ boolean introduced;
byte action;
boolean action_received;
+
+ struct NetworkServerPlayerInfo *next;
};
static struct NetworkServerPlayerInfo *first_player = NULL;
static UDPsocket udp; /* listening UDP socket */
static SDLNet_SocketSet fds; /* socket set */
-static unsigned char realbuffer[512], *buffer = realbuffer + 4;
-
-static int interrupt;
+static struct NetworkBuffer *read_buffer = NULL;
+static struct NetworkBuffer *write_buffer = NULL;
static unsigned int ServerFrameCounter = 0;
-static void addtobuffer(struct NetworkServerPlayerInfo *player,
- unsigned char *b, int len)
+
+int getNetwork8BitInteger(byte *ptr)
+{
+ return ptr[0];
+}
+
+int putNetwork8BitInteger(byte *ptr, int value)
+{
+ ptr[0] = value;
+
+ return 1;
+}
+
+int getNetwork16BitInteger(byte *ptr)
+{
+ return ((ptr[0] << 8) |
+ (ptr[1] << 0));
+}
+
+int putNetwork16BitInteger(byte *ptr, int value)
+{
+ ptr[0] = (value >> 8) & 0xff;
+ ptr[1] = (value >> 0) & 0xff;
+
+ return 2;
+}
+
+int getNetwork32BitInteger(byte *ptr)
+{
+ return ((ptr[0] << 24) |
+ (ptr[1] << 16) |
+ (ptr[2] << 8) |
+ (ptr[3] << 0));
+}
+
+int putNetwork32BitInteger(byte *ptr, int value)
+{
+ ptr[0] = (value >> 24) & 0xff;
+ ptr[1] = (value >> 16) & 0xff;
+ ptr[2] = (value >> 8) & 0xff;
+ ptr[3] = (value >> 0) & 0xff;
+
+ return 4;
+}
+
+char *getNetworkString(byte *ptr)
+{
+ return (char *)ptr;
+}
+
+int putNetworkString(byte *ptr, char *s)
{
- if (player->nwrite + len >= MAX_BUFFER_SIZE)
- Error(ERR_EXIT_NETWORK_SERVER,
- "internal error: network send buffer overflow");
+ strcpy((char *)ptr, s);
- memcpy(player->writbuffer + player->nwrite, b, len);
- player->nwrite += len;
+ return strlen(s) + 1;
}
-static void flushuser(struct NetworkServerPlayerInfo *player)
+struct NetworkBuffer *newNetworkBuffer()
{
- if (player->nwrite)
+ struct NetworkBuffer *new = checked_calloc(sizeof(struct NetworkBuffer));
+
+ new->max_size = MAX_BUFFER_SIZE;
+ new->size = 0;
+ new->pos = 0;
+
+ new->buffer = checked_calloc(new->max_size);
+
+ return new;
+}
+
+static void resetNetworkBufferForReading(struct NetworkBuffer *nb)
+{
+ nb->pos = 0;
+}
+
+static void resetNetworkBufferForWriting(struct NetworkBuffer *nb)
+{
+ nb->size = 0;
+ nb->pos = 0;
+}
+
+void initNetworkBufferForReceiving(struct NetworkBuffer *nb)
+{
+ resetNetworkBufferForWriting(nb);
+}
+
+void initNetworkBufferForReading(struct NetworkBuffer *nb)
+{
+ resetNetworkBufferForReading(nb);
+
+ /* skip message length header */
+ getNetworkBuffer32BitInteger(nb);
+}
+
+void initNetworkBufferForWriting(struct NetworkBuffer *nb, int message_type,
+ int player_nr)
+{
+ resetNetworkBufferForWriting(nb);
+
+ /* will be replaced with message length before sending */
+ putNetworkBuffer32BitInteger(nb, 0);
+
+ putNetworkBuffer8BitInteger(nb, message_type);
+ putNetworkBuffer8BitInteger(nb, player_nr);
+}
+
+static void copyNetworkBufferForWriting(struct NetworkBuffer *nb_from,
+ struct NetworkBuffer *nb_to,
+ int player_nr)
+{
+ initNetworkBufferForReading(nb_from);
+
+ int message_type = getNetworkBuffer8BitInteger(nb_from);
+
+ /* skip player number */
+ getNetworkBuffer8BitInteger(nb_from);
+
+ initNetworkBufferForWriting(nb_to, message_type, player_nr);
+
+ while (nb_from->pos < nb_from->size)
{
- SDLNet_TCP_Send(player->fd, player->writbuffer, player->nwrite);
+ int b = getNetworkBuffer8BitInteger(nb_from);
- player->nwrite = 0;
+ putNetworkBuffer8BitInteger(nb_to, b);
}
}
-static void broadcast(struct NetworkServerPlayerInfo *except,
- int len, int activeonly)
+static void increaseNetworkBuffer(struct NetworkBuffer *nb, int additional_size)
+{
+ /* add some more buffer size than is really required this time */
+ nb->max_size += additional_size + MAX_BUFFER_SIZE;
+ nb->buffer = checked_realloc(nb->buffer, nb->max_size);
+}
+
+int receiveNetworkBufferBytes(struct NetworkBuffer *nb, TCPsocket socket,
+ int num_bytes)
+{
+ if (nb->pos + num_bytes > nb->max_size)
+ increaseNetworkBuffer(nb, num_bytes);
+
+ int result = SDLNet_TCP_Recv(socket, &nb->buffer[nb->pos], num_bytes);
+
+ if (result != num_bytes)
+ return result;
+
+ nb->pos += num_bytes;
+ nb->size = nb->pos;
+
+ return num_bytes;
+}
+
+int receiveNetworkBufferPacket(struct NetworkBuffer *nb, TCPsocket socket)
+{
+ int num_bytes, num_bytes_head, num_bytes_body;
+
+ num_bytes_head = 4;
+ num_bytes = receiveNetworkBufferBytes(nb, socket, num_bytes_head);
+
+ if (num_bytes != num_bytes_head)
+ return num_bytes;
+
+ num_bytes_body = getNetwork32BitInteger(nb->buffer);
+ num_bytes = receiveNetworkBufferBytes(nb, socket, num_bytes_body);
+
+ return num_bytes;
+}
+
+int getNetworkBuffer8BitInteger(struct NetworkBuffer *nb)
+{
+ int num_bytes = 1;
+
+ if (nb->pos + num_bytes > nb->size)
+ return 0;
+
+ int value = getNetwork8BitInteger(&nb->buffer[nb->pos]);
+
+ nb->pos += num_bytes;
+
+ return value;
+}
+
+void putNetworkBuffer8BitInteger(struct NetworkBuffer *nb, int value)
+{
+ int num_bytes = 1;
+
+ if (nb->pos + num_bytes > nb->max_size)
+ increaseNetworkBuffer(nb, num_bytes);
+
+ nb->pos += putNetwork8BitInteger(&nb->buffer[nb->pos], value);
+ nb->size = nb->pos;
+}
+
+int getNetworkBuffer16BitInteger(struct NetworkBuffer *nb)
+{
+ int num_bytes = 2;
+
+ if (nb->pos + num_bytes > nb->size)
+ return 0;
+
+ int value = getNetwork16BitInteger(&nb->buffer[nb->pos]);
+
+ nb->pos += num_bytes;
+
+ return value;
+}
+
+void putNetworkBuffer16BitInteger(struct NetworkBuffer *nb, int value)
+{
+ int num_bytes = 2;
+
+ if (nb->pos + num_bytes > nb->max_size)
+ increaseNetworkBuffer(nb, num_bytes);
+
+ nb->pos += putNetwork16BitInteger(&nb->buffer[nb->pos], value);
+ nb->size = nb->pos;
+}
+
+int getNetworkBuffer32BitInteger(struct NetworkBuffer *nb)
+{
+ int num_bytes = 4;
+
+ if (nb->pos + num_bytes > nb->size)
+ return 0;
+
+ int value = getNetwork32BitInteger(&nb->buffer[nb->pos]);
+
+ nb->pos += num_bytes;
+
+ return value;
+}
+
+void putNetworkBuffer32BitInteger(struct NetworkBuffer *nb, int value)
+{
+ int num_bytes = 4;
+
+ if (nb->pos + num_bytes > nb->max_size)
+ increaseNetworkBuffer(nb, num_bytes);
+
+ nb->pos += putNetwork32BitInteger(&nb->buffer[nb->pos], value);
+ nb->size = nb->pos;
+}
+
+char *getNetworkBufferString(struct NetworkBuffer *nb)
+{
+ char *s = getNetworkString(&nb->buffer[nb->pos]);
+
+ nb->pos += strlen(s) + 1;
+
+ return s;
+}
+
+void putNetworkBufferString(struct NetworkBuffer *nb, char *s)
+{
+ int num_bytes = strlen(s) + 1;
+
+ if (nb->pos + num_bytes > nb->max_size)
+ increaseNetworkBuffer(nb, num_bytes);
+
+ nb->pos += putNetworkString(&nb->buffer[nb->pos], s);
+ nb->size = nb->pos;
+}
+
+static void SendNetworkBufferToAllButOne(struct NetworkBuffer *nb,
+ struct NetworkServerPlayerInfo *except)
{
struct NetworkServerPlayerInfo *player;
- realbuffer[0] = realbuffer[1] = realbuffer[2] = 0;
- realbuffer[3] = (unsigned char)len;
- for (player = first_player; player; player = player->next)
- if (player != except && player->introduced &&
- (player->active || !activeonly))
- addtobuffer(player, realbuffer, 4 + len);
+ /* set message length header */
+ putNetwork32BitInteger(nb->buffer, nb->size - 4);
+
+ for (player = first_player; player != NULL; player = player->next)
+ {
+ if (player != except && player->introduced)
+ {
+ /* directly send the buffer to the network client */
+ SDLNet_TCP_Send(player->fd, nb->buffer, nb->size);
+ }
+ }
}
-static void sendtoone(struct NetworkServerPlayerInfo *to, int len)
+static void SendNetworkBufferToAll(struct NetworkBuffer *nb)
{
- realbuffer[0] = realbuffer[1] = realbuffer[2] = 0;
- realbuffer[3] = (unsigned char)len;
- addtobuffer(to, realbuffer, 4 + len);
+ SendNetworkBufferToAllButOne(nb, NULL);
+}
+
+static void SendNetworkBufferToClient(struct NetworkBuffer *nb,
+ struct NetworkServerPlayerInfo *player)
+{
+ /* set message length header */
+ putNetwork32BitInteger(nb->buffer, nb->size - 4);
+
+ /* directly send the buffer to the network client */
+ SDLNet_TCP_Send(player->fd, nb->buffer, nb->size);
}
static void RemovePlayer(struct NetworkServerPlayerInfo *player)
{
- struct NetworkServerPlayerInfo *v;
-
if (options.verbose)
Error(ERR_NETWORK_SERVER, "dropping client %d (%s)",
player->number, player->player_name);
+ SDLNet_TCP_DelSocket(fds, player->fd);
+ SDLNet_TCP_Close(player->fd);
+
if (player == first_player)
+ {
first_player = player->next;
+ }
else
{
- for (v = first_player; v; v = v->next)
+ struct NetworkServerPlayerInfo *p;
+
+ for (p = first_player; p != NULL; p = p->next)
{
- if (v->next && v->next == player)
+ if (p->next && p->next == player)
{
- v->next = player->next;
+ p->next = player->next;
+
break;
}
}
}
- SDLNet_TCP_DelSocket(fds, player->fd);
- SDLNet_TCP_Close(player->fd);
-
if (player->introduced)
{
- buffer[0] = player->number;
- buffer[1] = OP_PLAYER_DISCONNECTED;
- broadcast(player, 2, 0);
+ initNetworkBufferForWriting(write_buffer, OP_PLAYER_DISCONNECTED,
+ player->number);
+
+ SendNetworkBufferToAllButOne(write_buffer, player);
}
free(player);
- clients--;
+ num_clients--;
#if 0 /* do not terminate network server if last player disconnected */
- if (onceonly && clients == 0)
+ if (run_server_only_once && num_clients == 0)
{
if (options.verbose)
{
Error(ERR_NETWORK_SERVER, "no clients left");
Error(ERR_NETWORK_SERVER, "aborting");
}
+
exit(0);
}
#endif
static void AddPlayer(TCPsocket fd)
{
- struct NetworkServerPlayerInfo *player, *v;
- unsigned char nxn;
+ struct NetworkServerPlayerInfo *player, *p;
+ int number = 1;
boolean again = TRUE;
- player = checked_malloc(sizeof (struct NetworkServerPlayerInfo));
+ SDLNet_TCP_AddSocket(fds, fd);
+
+ player = checked_calloc(sizeof(struct NetworkServerPlayerInfo));
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->active = FALSE;
+ player->introduced = FALSE;
player->action = 0;
player->action_received = FALSE;
-
- SDLNet_TCP_AddSocket(fds, fd);
+ player->next = first_player;
first_player = player;
- nxn = 1;
-
while (again)
{
again = FALSE;
- v = player->next;
+ p = player->next;
- while (v)
+ while (p)
{
- if (v->number == nxn)
+ if (p->number == number)
{
- nxn++;
+ number++;
again = TRUE;
+
break;
}
- v = v->next;
+
+ p = p->next;
}
}
- player->number = nxn;
- clients++;
+ player->number = number;
+ num_clients++;
- buffer[0] = 0;
- buffer[1] = OP_YOUR_NUMBER;
- buffer[2] = player->number;
- sendtoone(player, 3);
+ initNetworkBufferForWriting(write_buffer, OP_YOUR_NUMBER, 0);
+
+ putNetworkBuffer8BitInteger(write_buffer, player->number);
+
+ SendNetworkBufferToClient(write_buffer, player);
}
-static void Handle_OP_PROTOCOL_VERSION(struct NetworkServerPlayerInfo *player,
- unsigned int len)
+static void Handle_OP_PROTOCOL_VERSION(struct NetworkServerPlayerInfo *player)
{
- if (len != 5 ||
- buffer[2] != PROTOCOL_VERSION_1 ||
- buffer[3] != PROTOCOL_VERSION_2)
+ int protocol_version_major = getNetworkBuffer8BitInteger(read_buffer);
+ int protocol_version_minor = getNetworkBuffer8BitInteger(read_buffer);
+ int protocol_version_patch = getNetworkBuffer8BitInteger(read_buffer);
+
+ if (protocol_version_major != PROTOCOL_VERSION_MAJOR ||
+ protocol_version_minor != PROTOCOL_VERSION_MINOR)
{
if (options.verbose)
Error(ERR_NETWORK_SERVER,
"client %d (%s) has wrong protocol version %d.%d.%d",
- player->number, player->player_name, buffer[2], buffer[3], buffer[4]);
+ player->number, player->player_name,
+ protocol_version_major,
+ protocol_version_minor,
+ protocol_version_patch);
+
+ initNetworkBufferForWriting(write_buffer, OP_BAD_PROTOCOL_VERSION, 0);
- 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);
+ putNetworkBuffer8BitInteger(write_buffer, PROTOCOL_VERSION_MAJOR);
+ putNetworkBuffer8BitInteger(write_buffer, PROTOCOL_VERSION_MINOR);
+ putNetworkBuffer8BitInteger(write_buffer, PROTOCOL_VERSION_PATCH);
+
+ SendNetworkBufferToClient(write_buffer, player);
RemovePlayer(player);
- interrupt = 1;
}
else
{
if (options.verbose)
Error(ERR_NETWORK_SERVER,
"client %d (%s) uses protocol version %d.%d.%d",
- player->number, player->player_name, buffer[2], buffer[3], buffer[4]);
+ player->number, player->player_name,
+ protocol_version_major,
+ protocol_version_minor,
+ protocol_version_patch);
}
}
static void Handle_OP_NUMBER_WANTED(struct NetworkServerPlayerInfo *player)
{
- struct NetworkServerPlayerInfo *v;
+ int nr_wanted = getNetworkBuffer8BitInteger(read_buffer);
int client_nr = player->number;
- int nr_wanted = buffer[2];
- int nr_is_free = 1;
+ boolean nr_is_free = TRUE;
+ struct NetworkServerPlayerInfo *p;
if (options.verbose)
Error(ERR_NETWORK_SERVER, "client %d (%s) wants to switch to # %d",
player->number, player->player_name, nr_wanted);
- for (v = first_player; v; v = v->next)
+ for (p = first_player; p != NULL; p = p->next)
{
- if (v->number == nr_wanted)
+ if (p->number == nr_wanted)
{
- nr_is_free = 0;
+ nr_is_free = FALSE;
+
break;
}
}
if (nr_is_free)
player->number = nr_wanted;
- buffer[0] = client_nr;
- buffer[1] = OP_NUMBER_WANTED;
- buffer[2] = nr_wanted;
- buffer[3] = player->number;
+ initNetworkBufferForWriting(write_buffer, OP_NUMBER_WANTED, client_nr);
- /*
- sendtoone(player, 4);
- */
+ putNetworkBuffer8BitInteger(write_buffer, nr_wanted);
+ putNetworkBuffer8BitInteger(write_buffer, player->number);
- broadcast(NULL, 4, 0);
+ SendNetworkBufferToAll(write_buffer);
}
-static void Handle_OP_PLAYER_NAME(struct NetworkServerPlayerInfo *player,
- unsigned int len)
+static void Handle_OP_PLAYER_NAME(struct NetworkServerPlayerInfo *player)
{
- struct NetworkServerPlayerInfo *v;
+ char *player_name = getNetworkBufferString(read_buffer);
int i;
- if (len>16)
- len=16;
- memcpy(player->player_name, &buffer[2], len-2);
- player->player_name[len-2] = 0;
- for (i = 0; i < len - 2; i++)
+ strncpy(player->player_name, player_name, MAX_PLAYER_NAME_LEN);
+ player->player_name[MAX_PLAYER_NAME_LEN] = '\0';
+
+ for (i = 0; i < MAX_PLAYER_NAME_LEN; i++)
{
- if (player->player_name[i] < ' ' ||
+ if (player->player_name[i] < ' ' ||
((unsigned char)(player->player_name[i]) > 0x7e &&
(unsigned char)(player->player_name[i]) <= 0xa0))
{
player->player_name[i] = 0;
+
break;
}
}
if (!player->introduced)
{
- buffer[0] = player->number;
- buffer[1] = OP_PLAYER_CONNECTED;
- broadcast(player, 2, 0);
+ initNetworkBufferForWriting(write_buffer, OP_PLAYER_CONNECTED,
+ player->number);
+
+ SendNetworkBufferToAllButOne(write_buffer, player);
}
if (options.verbose)
Error(ERR_NETWORK_SERVER, "client %d calls itself \"%s\"",
player->number, player->player_name);
- buffer[1] = OP_PLAYER_NAME;
- broadcast(player, len, 0);
+
+ copyNetworkBufferForWriting(read_buffer, write_buffer, player->number);
+
+ SendNetworkBufferToAllButOne(write_buffer, player);
if (!player->introduced)
{
- for (v = first_player; v; v = v->next)
+ struct NetworkServerPlayerInfo *p;
+
+ for (p = first_player; p != NULL; p = p->next)
{
- if (v != player && v->introduced)
+ if (p != player && p->introduced)
{
- 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));
+ initNetworkBufferForWriting(write_buffer, OP_PLAYER_CONNECTED,
+ p->number);
+
+ SendNetworkBufferToClient(write_buffer, player);
+
+ initNetworkBufferForWriting(write_buffer, OP_PLAYER_NAME, p->number);
+
+ putNetworkBufferString(write_buffer, p->player_name);
+
+ SendNetworkBufferToClient(write_buffer, player);
}
}
}
- player->introduced = 1;
+ player->introduced = TRUE;
}
static void Handle_OP_START_PLAYING(struct NetworkServerPlayerInfo *player)
{
- struct NetworkServerPlayerInfo *v, *w;
+ char *new_leveldir_identifier = getNetworkBufferString(read_buffer);
+ int level_nr = getNetworkBuffer16BitInteger(read_buffer);
if (options.verbose)
Error(ERR_NETWORK_SERVER,
- "client %d (%s) starts game [level %d from leveldir %d (%s)]",
- player->number, player->player_name,
- (buffer[2] << 8) + buffer[3],
- (buffer[4] << 8) + buffer[5],
- &buffer[10]);
+ "client %d (%s) starts game [level %d from level set '%s']",
+ player->number, player->player_name, level_nr,
+ new_leveldir_identifier);
- for (w = first_player; w; w = w->next)
- if (w->introduced)
- w->active = 1;
+ struct NetworkServerPlayerInfo *p;
/* reset frame counter */
ServerFrameCounter = 0;
Error(ERR_NETWORK_SERVER, "resetting ServerFrameCounter to 0");
/* reset player actions */
- for (v = first_player; v; v = v->next)
+ for (p = first_player; p != NULL; p = p->next)
{
- v->action = 0;
- v->action_received = FALSE;
+ p->action = 0;
+ p->action_received = FALSE;
+
+ if (p->introduced)
+ p->active = TRUE;
}
- broadcast(NULL, 10 + strlen((char *)&buffer[10])+1, 0);
+ copyNetworkBufferForWriting(read_buffer, write_buffer, player->number);
+
+ SendNetworkBufferToAll(write_buffer);
}
static void Handle_OP_PAUSE_PLAYING(struct NetworkServerPlayerInfo *player)
if (options.verbose)
Error(ERR_NETWORK_SERVER, "client %d (%s) pauses game",
player->number, player->player_name);
- broadcast(NULL, 2, 0);
+
+ copyNetworkBufferForWriting(read_buffer, write_buffer, player->number);
+
+ SendNetworkBufferToAll(write_buffer);
}
static void Handle_OP_CONTINUE_PLAYING(struct NetworkServerPlayerInfo *player)
if (options.verbose)
Error(ERR_NETWORK_SERVER, "client %d (%s) continues game",
player->number, player->player_name);
- broadcast(NULL, 2, 0);
+
+ copyNetworkBufferForWriting(read_buffer, write_buffer, player->number);
+
+ SendNetworkBufferToAll(write_buffer);
}
static void Handle_OP_STOP_PLAYING(struct NetworkServerPlayerInfo *player)
{
- int cause_for_stopping = buffer[2];
+ int cause_for_stopping = getNetworkBuffer8BitInteger(read_buffer);
if (options.verbose)
Error(ERR_NETWORK_SERVER, "client %d (%s) stops game [%d]",
player->number, player->player_name, cause_for_stopping);
- broadcast(NULL, 3, 0);
+
+ copyNetworkBufferForWriting(read_buffer, write_buffer, player->number);
+
+ SendNetworkBufferToAll(write_buffer);
}
static void Handle_OP_MOVE_PLAYER(struct NetworkServerPlayerInfo *player)
{
- struct NetworkServerPlayerInfo *v;
+ int player_action = getNetworkBuffer8BitInteger(read_buffer);
int last_client_nr = 0;
+ struct NetworkServerPlayerInfo *p;
int i;
/* store player action */
- for (v = first_player; v; v = v->next)
+ for (p = first_player; p != NULL; p = p->next)
{
- if (v->number == player->number)
+ if (p->number == player->number)
{
- v->action = buffer[2];
- v->action_received = TRUE;
+ p->action = player_action;
+ p->action_received = TRUE;
}
}
/* check if server received action from each player */
- for (v = first_player; v; v = v->next)
+ for (p = first_player; p != NULL; p = p->next)
{
- if (!v->action_received)
+ if (!p->action_received)
return;
- if (v->number > last_client_nr)
- last_client_nr = v->number;
+ if (p->number > last_client_nr)
+ last_client_nr = p->number;
}
+ int player_action_all[last_client_nr];
+
/* initialize all player actions to zero */
for (i = 0; i < last_client_nr; i++)
- buffer[6 + i] = 0;
+ player_action_all[i] = 0;
/* broadcast actions of all players to all players */
- for (v = first_player; v; v = v->next)
+ for (p = first_player; p != NULL; p = p->next)
{
- buffer[6 + v->number-1] = v->action;
- v->action = 0;
- v->action_received = FALSE;
+ player_action_all[p->number - 1] = p->action;
+
+ p->action = 0;
+ p->action_received = FALSE;
}
- 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);
+ initNetworkBufferForWriting(write_buffer, OP_MOVE_PLAYER, player->number);
+
+ putNetworkBuffer32BitInteger(write_buffer, ServerFrameCounter);
+
+ for (i = 0; i < last_client_nr; i++)
+ putNetworkBuffer8BitInteger(write_buffer, player_action_all[i]);
- broadcast(NULL, 6 + last_client_nr, 0);
+ SendNetworkBufferToAll(write_buffer);
ServerFrameCounter++;
}
+static void Handle_OP_BROADCAST_MESSAGE(struct NetworkServerPlayerInfo *player)
+{
+ char *message = getNetworkBufferString(read_buffer);
+
+ if (options.verbose)
+ Error(ERR_NETWORK_SERVER, "client %d (%s) sends message: %s",
+ player->number, player->player_name, message);
+
+ copyNetworkBufferForWriting(read_buffer, write_buffer, player->number);
+
+ SendNetworkBufferToAllButOne(write_buffer, player);
+}
+
void ExitNetworkServer(int exit_value)
{
Error(ERR_NETWORK_SERVER, "exiting network server");
void NetworkServer(int port, int serveronly)
{
struct NetworkServerPlayerInfo *player;
- int r;
- unsigned int len;
IPaddress ip;
#if defined(PLATFORM_UNIX) && !defined(PLATFORM_NEXT)
struct sigaction sact;
#endif
+ if (read_buffer == NULL)
+ read_buffer = newNetworkBuffer();
+
+ if (write_buffer == NULL)
+ write_buffer = newNetworkBuffer();
+
if (port == 0)
port = DEFAULT_SERVER_PORT;
signal(SIGINT, ExitNetworkServer);
if (!serveronly)
- onceonly = 1;
+ run_server_only_once = TRUE;
#if defined(PLATFORM_UNIX)
#if defined(PLATFORM_NEXT)
{
Error(ERR_NETWORK_SERVER, "started up, listening on port %d", port);
Error(ERR_NETWORK_SERVER, "using protocol version %d.%d.%d",
- PROTOCOL_VERSION_1, PROTOCOL_VERSION_2, PROTOCOL_VERSION_3);
+ PROTOCOL_VERSION_MAJOR,
+ PROTOCOL_VERSION_MINOR,
+ PROTOCOL_VERSION_PATCH);
}
while (1)
{
- interrupt = 0;
-
- for (player = first_player; player; player = player->next)
- flushuser(player);
-
// wait for 100 ms for activity on open network sockets
if (SDLNet_CheckSockets(fds, 100) < 1)
continue;
}
}
- player = first_player;
-
- while (player && !interrupt)
+ for (player = first_player; player != NULL; player = player->next)
{
- if (SDLNet_SocketReady(player->fd))
+ if (!SDLNet_SocketReady(player->fd))
+ continue;
+
+ initNetworkBufferForReceiving(read_buffer);
+
+ int num_bytes = receiveNetworkBufferPacket(read_buffer, player->fd);
+
+ if (num_bytes <= 0)
{
- /* read only 1 byte, because SDLNet blocks when we want more than is
- in the buffer */
- r = SDLNet_TCP_Recv(player->fd, player->readbuffer + player->nread, 1);
+ if (options.verbose)
+ Error(ERR_NETWORK_SERVER, "EOF from client %d (%s)",
+ player->number, player->player_name);
- if (r <= 0)
- {
- if (options.verbose)
- Error(ERR_NETWORK_SERVER, "EOF from client %d (%s)",
- player->number, player->player_name);
- RemovePlayer(player);
- interrupt = 1;
- break;
- }
- player->nread += r;
- while (player->nread >= 4 && player->nread >= 4 + player->readbuffer[3])
- {
- 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)",
- player->number, player->player_name);
- RemovePlayer(player);
- interrupt = 1;
- break;
- }
- memcpy(buffer, &player->readbuffer[4], len);
- player->nread -= 4 + len;
- memmove(player->readbuffer, player->readbuffer + 4 + len, player->nread);
-
- buffer[0] = player->number;
- if (!player->introduced &&
- buffer[1] != OP_PLAYER_NAME &&
- buffer[1] != OP_PROTOCOL_VERSION)
- {
- if (options.verbose)
- Error(ERR_NETWORK_SERVER, "!(client %d)->introduced && buffer[1]==%d (expected OP_PLAYER_NAME or OP_PROTOCOL_VERSION)", buffer[0], buffer[1]);
-
- RemovePlayer(player);
- interrupt = 1;
- break;
- }
-
- switch (buffer[1])
- {
- case OP_PLAYER_NAME:
- Handle_OP_PLAYER_NAME(player, len);
- break;
-
- case OP_PROTOCOL_VERSION:
- Handle_OP_PROTOCOL_VERSION(player, len);
- break;
-
- case OP_NUMBER_WANTED:
- Handle_OP_NUMBER_WANTED(player);
- break;
-
- case OP_START_PLAYING:
- Handle_OP_START_PLAYING(player);
- break;
-
- case OP_PAUSE_PLAYING:
- Handle_OP_PAUSE_PLAYING(player);
- break;
-
- case OP_CONTINUE_PLAYING:
- Handle_OP_CONTINUE_PLAYING(player);
- break;
-
- case OP_STOP_PLAYING:
- Handle_OP_STOP_PLAYING(player);
- break;
-
- case OP_MOVE_PLAYER:
- Handle_OP_MOVE_PLAYER(player);
- break;
-
- case OP_BROADCAST_MESSAGE:
- buffer[len] = '\0';
- if (options.verbose)
- Error(ERR_NETWORK_SERVER, "client %d (%s) sends message: %s",
- 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)",
- buffer[0], player->number, player->player_name);
- }
- }
+ RemovePlayer(player);
+
+ break;
}
- if (player && !interrupt)
- player = player->next;
+ initNetworkBufferForReading(read_buffer);
+
+ int message_type = getNetworkBuffer8BitInteger(read_buffer);
+
+ /* skip player number */
+ getNetworkBuffer8BitInteger(read_buffer);
+
+ if (!player->introduced &&
+ message_type != OP_PLAYER_NAME &&
+ message_type != OP_PROTOCOL_VERSION)
+ {
+ if (options.verbose)
+ Error(ERR_NETWORK_SERVER, "got opcode %d for client %d which is not introduced yet (expected OP_PLAYER_NAME or OP_PROTOCOL_VERSION)", message_type, player->number);
+
+ RemovePlayer(player);
+
+ break;
+ }
+
+ switch (message_type)
+ {
+ case OP_PROTOCOL_VERSION:
+ Handle_OP_PROTOCOL_VERSION(player);
+ break;
+
+ case OP_NUMBER_WANTED:
+ Handle_OP_NUMBER_WANTED(player);
+ break;
+
+ case OP_PLAYER_NAME:
+ Handle_OP_PLAYER_NAME(player);
+ break;
+
+ case OP_START_PLAYING:
+ Handle_OP_START_PLAYING(player);
+ break;
+
+ case OP_PAUSE_PLAYING:
+ Handle_OP_PAUSE_PLAYING(player);
+ break;
+
+ case OP_CONTINUE_PLAYING:
+ Handle_OP_CONTINUE_PLAYING(player);
+ break;
+
+ case OP_STOP_PLAYING:
+ Handle_OP_STOP_PLAYING(player);
+ break;
+
+ case OP_MOVE_PLAYER:
+ Handle_OP_MOVE_PLAYER(player);
+ break;
+
+ case OP_BROADCAST_MESSAGE:
+ Handle_OP_BROADCAST_MESSAGE(player);
+ break;
+
+ default:
+ if (options.verbose)
+ Error(ERR_NETWORK_SERVER,
+ "unknown opcode %d from client %d (%s)",
+ message_type, player->number, player->player_name);
+ }
}
}
}
projects / rocksndiamonds.git / blobdiff