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/*
* file com_to_server.c - client's communication with server
*
* $Id: com_to_server.c,v 1.24 2006/02/09 21:21:23 fzago Exp $
*
* Program XBLAST
* (C) by Oliver Vogel (e-mail: m.vogel@ndh.net)
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published
* by the Free Software Foundation; either version 2; or (at your option)
* any later version
*
* This program is distributed in the hope that it will be entertaining,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILTY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General
* Public License for more details.
*
* You should have received a copy of the GNU General Public License along
* with this program; if not, write to the Free Software Foundation, Inc.
* 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
#include "xblast.h"
/*
* local types
*/
typedef struct
{
XBCommStream stream;
XBBool expect; /* flag for expected disconnect request */
} XBCommToServer;
/************
* handlers *
************/
/*
* server requests data
*/
static XBCommResult
HandleRequestData (XBCommStream * stream, const XBTelegram * tele)
{
switch (Net_TeleID (tele)) {
case XBT_ID_PlayerConfig:
Dbg_C2S ("receiving player config request from server\n");
Client_ReceivePlayerConfigReq (Net_TeleIOB (tele));
break;
case XBT_ID_GameConfig:
Dbg_C2S ("receiving game config request from server\n");
(void)Client_ReceiveGameConfigReq (Net_TeleIOB (tele));
break;
default:
Dbg_C2S ("server sends unrecognized data !!!\n");
return Client_StreamEvent (XBCC_IDInvalid) ? XCR_Error : XCR_OK;
}
return XCR_OK;
} /* HandleRequestData */
/*
* server sends data
*/
static XBCommResult
HandleSendData (XBCommStream * stream, const XBTelegram * tele)
{
const char *data;
size_t len;
XBTeleIOB iob;
XBChat *chat;
data = Net_TeleData (tele, &len);
iob = Net_TeleIOB (tele);
switch (Net_TeleID (tele)) {
case XBT_ID_GameConfig:
Dbg_C2S ("receiving game config from server\n");
Client_ReceiveGameConfig (iob, data);
break;
case XBT_ID_PlayerConfig:
Dbg_C2S ("receiving player config from server\n");
Client_ReceivePlayerConfig (iob >> 4, iob & 0x0F, data);
break;
case XBT_ID_LevelConfig:
Dbg_C2S ("receiving level config from server\n");
Client_ReceiveLevelConfig (iob, data);
break;
case XBT_ID_Chat:
chat = Chat_UnpackData (data, len, iob);
if (NULL != chat) {
Dbg_C2S ("receiving chat from server\n");
Client_ReceiveChat (chat);
}
else {
Dbg_C2S ("receiving invalid chat data\n");
return Client_StreamEvent (XBCC_DataInvalid) ? XCR_Error : XCR_OK;
}
return XCR_OK;
default:
Dbg_C2S ("server sent unrecognized data\n");
return Client_StreamEvent (XBCC_IDInvalid) ? XCR_Error : XCR_OK;
}
return XCR_OK;
} /* HandleSendData */
/*
* server sends a command
*/
static XBCommResult
HandleActivate (XBCommStream * stream, const XBTelegram * tele)
{
XBCommToServer *toServer = (XBCommToServer *) stream;
const char *data;
size_t len;
unsigned value;
unsigned tmp;
data = Net_TeleData (tele, &len);
switch (Net_TeleID (tele)) {
case XBT_ID_RequestDisconnect:
if (toServer->expect) {
Dbg_C2S ("server finishes disconnect announcement, shutting down stream\n");
(void)Client_StreamEvent (XBCC_ExpectedEOF);
return XCR_Finished;
}
else {
Dbg_C2S ("server unexpectedly requests disconnect\n");
(void)Client_StreamEvent (XBCC_UnexpectedEOF);
return XCR_Error;
}
case XBT_ID_StartGame:
Dbg_C2S ("server has started the game!\n");
Client_ReceiveStart (Net_TeleIOB (tele));
break;
case XBT_ID_RandomSeed:
if (NULL != data && 1 == sscanf (data, "%u", &value)) {
Dbg_C2S ("server has sent random seed\n");
Client_ReceiveRandomSeed (value);
}
else {
Dbg_C2S ("server send invalid seed!\n");
return Client_StreamEvent (XBCC_DataInvalid) ? XCR_Error : XCR_OK;
}
break;
case XBT_ID_DgramPort:
if (NULL != data && 1 == sscanf (data, "%u", &value)) {
Dbg_C2S ("server has sent dgram port\n");
Client_ReceiveDgramPort (Net_TeleIOB (tele), value);
}
else {
Dbg_C2S ("server has sent invalid dgram port!\n");
return Client_StreamEvent (XBCC_DataInvalid) ? XCR_Error : XCR_OK;
}
break;
case XBT_ID_Sync:
Dbg_C2S ("server has sent sync\n");
Client_ReceiveSync (Net_TeleIOB (tele));
break;
case XBT_ID_Async:
Dbg_C2S ("server has sent async!\n");
Client_ReceiveAsync (Net_TeleIOB (tele));
break;
case XBT_ID_HostChange:
if (NULL != data && 1 == sscanf (data, "%u", &value)) {
Dbg_C2S ("server has sent host state\n");
Client_ReceiveHostState (Net_TeleIOB (tele), value);
}
else {
Dbg_C2S ("server has sent invalid host state!\n");
return Client_StreamEvent (XBCC_DataInvalid) ? XCR_Error : XCR_OK;
}
break;
case XBT_ID_TeamChange:
if (NULL != data && 1 == sscanf (data, "%u", &value)) {
Dbg_C2S ("server has sent team state!\n");
tmp = Net_TeleIOB (tele);
Client_ReceiveTeamState (tmp / NUM_LOCAL_PLAYER, tmp % NUM_LOCAL_PLAYER, value);
}
else {
Dbg_C2S ("server has sent invalid team state!\n");
return Client_StreamEvent (XBCC_DataInvalid) ? XCR_Error : XCR_OK;
}
break;
case XBT_ID_HostChangeReq:
if (len == 2) {
Dbg_C2S ("server has sent host state\n");
Client_ReceiveHostStateReq (Net_TeleIOB (tele), data[0], data[1]);
}
else {
Dbg_C2S ("server has sent invalid host state!\n");
return Client_StreamEvent (XBCC_DataInvalid) ? XCR_Error : XCR_OK;
}
break;
case XBT_ID_TeamChangeReq:
if (len == 3) {
Dbg_C2S ("server has sent team state request!\n");
Client_ReceiveTeamStateReq (Net_TeleIOB (tele), data[0], data[1], data[2]);
}
else {
Dbg_C2S ("server has sent invalid team state!\n");
return Client_StreamEvent (XBCC_DataInvalid) ? XCR_Error : XCR_OK;
}
break;
case XBT_ID_LevelConfig:
Dbg_C2S ("server sends level activation\n");
Client_ActivateLevel (Net_TeleIOB (tele));
break;
default:
Dbg_C2S ("server sends unrecognized command !!!\n");
return Client_StreamEvent (XBCC_IDInvalid) ? XCR_Error : XCR_OK;
}
return XCR_OK;
} /* HandleSendData */
/*
* handle infos from server
*/
static XBCommResult
HandleSpontaneous (XBCommStream * stream, const XBTelegram * tele)
{
XBCommToServer *toServer = (XBCommToServer *) stream;
switch (Net_TeleID (tele)) {
case XBT_ID_HostDisconnected:
Dbg_C2S ("server sends disconnect info\n");
toServer->expect = Client_ReceiveDisconnect (Net_TeleIOB (tele));
return XCR_OK;
default:
Dbg_C2S ("server sends unrecognized info !!!\n");
return Client_StreamEvent (XBCC_IDInvalid) ? XCR_Error : XCR_OK;
}
} /* HandleSpontaneous */
/*
* handle telegrams from server
*/
static XBCommResult
HandleTelegram (XBCommStream * stream, const XBTelegram * tele)
{
switch (Net_TeleCOT (tele)) {
/* server requests data from client */
case XBT_COT_RequestData:
return HandleRequestData (stream, tele);
/* server sends data to client */
case XBT_COT_SendData:
return HandleSendData (stream, tele);
/* server activate command on client */
case XBT_COT_Activate:
return HandleActivate (stream, tele);
/* server send spontaneous status change */
case XBT_COT_Spontaneous:
return HandleSpontaneous (stream, tele);
/* unknown cause of transmission */
default:
Dbg_C2S ("server sends invalid COT !\n");
return Client_StreamEvent (XBCC_COTInvalid) ? XCR_Error : XCR_OK;
}
} /* HandleTelegram */
/*
* handle delete: triggered by eof on com_stream, local parse errors
*/
static XBCommResult
DeleteToServer (XBComm * comm)
{
XBCommStream *stream = (XBCommStream *) comm;
/* delete communication */
Stream_CommFinish (stream);
free (comm);
Dbg_C2S ("removed stream to server\n");
return XCR_OK;
} /* DeleteToServer */
/*
* handle stream events
*/
static XBBool
EventToServer (XBCommStream * comm, const XBStreamEvent ev)
{
XBCommToServer *toServer = (XBCommToServer *) comm;
XBClientConstants code;
assert (toServer != NULL);
switch (ev) {
case XBST_IOREAD:
code = XBCC_IOError;
break;
case XBST_IOWRITE:
code = XBCC_IOError;
break;
case XBST_EOF:
code = XBCC_UnexpectedEOF;
break;
case XBST_WAIT:
code = XBCC_StreamWaiting;
break;
case XBST_BUSY:
code = XBCC_StreamBusy;
break;
case XBST_CLOSE:
code = XBCC_StreamClosed;
break;
default:
return XBFalse;
}
return Client_StreamEvent (code);
} /* EventToServer */
/***************
* constructor *
***************/
/*
* create a stream to server
*/
XBComm *
C2S_CreateComm (const CFGGameHost * cfg)
{
XBSocket *pSocket;
XBCommToServer *toServer;
assert (cfg != NULL);
/* create connection to server */
pSocket = Net_ConnectInet (cfg->name, cfg->port);
if (NULL == pSocket) {
Dbg_C2S ("failed to connect stream to server!\n");
return NULL;
}
Dbg_C2S ("connected stream to server!\n");
/* create communication data structure */
toServer = calloc (1, sizeof (*toServer));
assert (NULL != toServer);
/* set values */
Stream_CommInit (&toServer->stream, COMM_ToServer, pSocket, HandleTelegram, EventToServer,
DeleteToServer);
toServer->expect = XBFalse;
/* that'S all */
Dbg_C2S ("handlers established!\n");
return &toServer->stream.comm;
} /* CommCreateToServer */
/******************
* get local data *
******************/
/*
* return address of server in dot-representation
*/
const char *
C2S_ServerName (XBComm * comm)
{
return Net_RemoteName (comm->socket);
} /* C2S_ServerName */
/*
* return address of client (local host) in dot-representation
*/
const char *
C2S_ClientName (XBComm * comm)
{
return Net_LocalName (comm->socket);
} /* C2S_ClientName */
/**************
* queue data *
**************/
/*
* queue random seed to client
*/
void
C2S_SendDgramPort (XBComm * comm, unsigned short port)
{
XBCommStream *stream = (XBCommStream *) comm;
char tmp[16];
/* sanity check */
assert (stream != NULL);
assert (stream->sndQueue != NULL);
/* send seed as ascii */
sprintf (tmp, "%hu", port);
/* send data */
Socket_RegisterWrite (CommSocket (&stream->comm));
Net_SendTelegram (stream->sndQueue,
Net_CreateTelegram (XBT_COT_Activate, XBT_ID_DgramPort, 0, tmp,
strlen (tmp) + 1));
Dbg_C2S ("queued dgram port to server!\n");
} /* C2S_SendDgramPort */
/*
* queue a DataNotAvailable response, local
*/
static void
DataNotAvailable (XBComm * comm, XBTeleID id, XBTeleIOB iob)
{
XBCommStream *stream = (XBCommStream *) comm;
Socket_RegisterWrite (CommSocket (&stream->comm));
Net_SendTelegram (stream->sndQueue,
Net_CreateTelegram (XBT_COT_DataNotAvailable, id, iob, NULL, 0));
Dbg_C2S ("queued data not available to server\n");
} /* DataNotAvailable */
/*
* queue game config not available
*/
void
C2S_GameDataNotAvailable (XBComm * comm)
{
DataNotAvailable (comm, XBT_ID_GameConfig, 0);
} /* C2S_PlayerDataNotAvailable */
/*
* queue game config to client
*/
XBBool
C2S_SendGameConfig (XBComm * comm, CFGType cfgType, XBAtom atom)
{
XBCommStream *stream = (XBCommStream *) comm;
/* sanity check */
assert (stream != NULL);
assert (stream->sndQueue != NULL);
/* send data */
if (!SendGameConfig (cfgType, stream->sndQueue, XBT_COT_DataAvailable, 0, atom)) {
Dbg_C2S ("failed to queue game config!\n");
return XBFalse;
}
Socket_RegisterWrite (CommSocket (&stream->comm));
Dbg_C2S ("queued game config to server!\n");
return XBTrue;
} /* C2S_SendGameConfig */
/*
* queue player config not available
*/
void
C2S_PlayerDataNotAvailable (XBComm * comm, unsigned id)
{
DataNotAvailable (comm, XBT_ID_PlayerConfig, id);
} /* C2S_PlayerDataNotAvailable */
/*
* queue player config to client
*/
XBBool
C2S_SendPlayerConfig (XBComm * comm, CFGType cfgType, XBAtom atom, unsigned player, XBBool how)
{
XBCommStream *stream = (XBCommStream *) comm;
/* sanity check */
assert (stream != NULL);
assert (stream->sndQueue != NULL);
/* send data */
if (!SendPlayerConfig (cfgType, stream->sndQueue, XBT_COT_DataAvailable, player, atom, how)) {
Dbg_C2S ("failed to queue player config!\n");
return XBFalse;
}
Socket_RegisterWrite (CommSocket (&stream->comm));
Dbg_C2S ("queued game config to server!\n");
return XBTrue;
} /* C2S_SendPlayerConfig */
/*
* queue host state to server
* TODO: replace with requests below
*/
void
C2S_SendHostState (XBComm * comm, unsigned state)
{
XBCommStream *stream = (XBCommStream *) comm;
char tmp[16];
/* sanity check */
assert (stream != NULL);
assert (stream->sndQueue != NULL);
/* send state as ascii */
sprintf (tmp, "%hu", state);
Socket_RegisterWrite (CommSocket (&stream->comm));
Net_SendTelegram (stream->sndQueue,
Net_CreateTelegram (XBT_COT_Spontaneous, XBT_ID_HostChange, 0, tmp,
strlen (tmp) + 1));
Dbg_C2S ("queued host state to server!\n");
} /* C2S_SendHostState */
/*
* queue host state request to server
*/
void
C2S_SendHostStateReq (XBComm * comm, unsigned host, unsigned state)
{
XBCommStream *stream = (XBCommStream *) comm;
char tmp[2];
/* sanity check */
assert (stream != NULL);
assert (stream->sndQueue != NULL);
tmp[0] = host & 0xff;
tmp[1] = state & 0xff;
Socket_RegisterWrite (CommSocket (&stream->comm));
Net_SendTelegram (stream->sndQueue,
Net_CreateTelegram (XBT_COT_Activate, XBT_ID_HostChangeReq, 0, tmp,
sizeof (tmp)));
Dbg_C2S ("queued host state request host #%u->%u to server!\n", host, state);
} /* C2S_SendHostStateReq */
/*
* queue team state request to server
*/
void
C2S_SendTeamStateReq (XBComm * comm, unsigned host, unsigned player, unsigned team)
{
XBCommStream *stream = (XBCommStream *) comm;
char tmp[3];
/* sanity check */
assert (stream != NULL);
assert (stream->sndQueue != NULL);
tmp[0] = host & 0xff;
tmp[1] = player & 0xff;
tmp[2] = team & 0xff;
Socket_RegisterWrite (CommSocket (&stream->comm));
Net_SendTelegram (stream->sndQueue,
Net_CreateTelegram (XBT_COT_Activate, XBT_ID_TeamChangeReq, 0, tmp,
sizeof (tmp)));
Dbg_C2S ("queued team state request host #%u(%u)->%u to server!\n", host, player, team);
} /* C2S_SendHostStateReq */
/*
* send a chat line to server
*/
void
C2S_SendChat (XBComm * comm, XBChat * chat)
{
XBCommStream *stream = (XBCommStream *) comm;
unsigned iob;
char *data;
size_t len;
/* sanity check */
assert (stream != NULL);
assert (stream->sndQueue != NULL);
assert (chat != NULL);
/* pack chat data */
len = Chat_PackData (chat, &data, &iob);
/* prepare for writing */
Socket_RegisterWrite (CommSocket (&stream->comm));
Net_SendTelegram (stream->sndQueue,
Net_CreateTelegram (XBT_COT_Spontaneous, XBT_ID_Chat, iob, data, len));
Dbg_C2S ("queued chat to server\n");
} /* C2S_SendChat */
/*
* queue sync to server
*/
void
C2S_Sync (XBComm * comm, XBNetworkEvent event)
{
XBCommStream *stream = (XBCommStream *) comm;
assert (stream != NULL);
assert (stream->sndQueue != NULL);
Net_SendTelegram (stream->sndQueue,
Net_CreateTelegram (XBT_COT_Spontaneous, XBT_ID_Sync, (XBTeleIOB) event, NULL,
0));
Socket_RegisterWrite (CommSocket (&stream->comm));
Dbg_C2S ("queued sync #%u to server!\n", event);
} /* C2S_Sync */
/*
* queue level check result to server
*/
void
C2S_LevelCheck (XBComm * comm, XBBool rej)
{
XBCommStream *stream = (XBCommStream *) comm;
assert (stream != NULL);
assert (stream->sndQueue != NULL);
Net_SendTelegram (stream->sndQueue,
Net_CreateTelegram (XBT_COT_Activate, XBT_ID_LevelConfig, rej ? 0 : 1, NULL,
0));
Socket_RegisterWrite (CommSocket (&stream->comm));
Dbg_C2S ("queued level check result to server = %s\n", rej ? "reject" : "accept");
} /* C2S_LevelCheck */
/*
* queue level winner to server
*/
void
C2S_SendWinner (XBComm * comm, unsigned team)
{
XBCommStream *stream = (XBCommStream *) comm;
assert (stream != NULL);
assert (stream->sndQueue != NULL);
Net_SendTelegram (stream->sndQueue,
Net_CreateTelegram (XBT_COT_Activate, XBT_ID_WinnerTeam, team, NULL, 0));
Socket_RegisterWrite (CommSocket (&stream->comm));
Dbg_C2S ("queued level winner to server = %u\n", team);
} /* C2S_SendWinner */
/*
* end of file com_to_server.c
*/
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