void AdminProcessSessionBuffer(session_node *s)
{
char ch;
while (s->receive_list != NULL)
{
if (ReadSessionBytes(s,1,&ch) == False)
return;
/* give up receive mutex, so the interface/socket thread can
read data for us, even if doing something long (GC/save/reload sys) */
if (!MutexRelease(s->muxReceive))
eprintf("APSBPollSession released mutex it didn't own in session %i\n",
s->session_id);
AdminInputChar(s,ch);
if (!MutexAcquireWithTimeout(s->muxReceive,10000))
{
eprintf("APSB bailed waiting for mutex on session %i\n",s->session_id);
return;
}
/* any character could change our state. if so, leave */
if (s->hangup == True || s->state != STATE_ADMIN)
return;
}
}
void MaintenanceProcessSessionBuffer(session_node *s)
{
char ch;
while (s->receive_list != NULL)
{
if (ReadSessionBytes(s,1,&ch) == False)
return;
/* give up receive mutex, so the interface/socket thread can
read data for us, even if doing something long (GC/save/reload sys) */
if (!ReleaseMutex(s->muxReceive))
eprintf("APSBPollSession released mutex it didn't own in session %i\n",
s->session_id);
MaintenanceInputChar(s,ch);
if (WaitForSingleObject(s->muxReceive,10000) != WAIT_OBJECT_0)
{
eprintf("APSB bailed waiting for mutex on session %i\n",s->session_id);
return;
}
/* any character could change our state. if so, leave */
if (s->hangup == True || s->state != STATE_MAINTENANCE)
return;
}
}
void ResyncProcessSessionBuffer(session_node *s)
{
char ch;
while (s->receive_list != NULL)
{
if (ReadSessionBytes(s,1,&ch) == False)
return;
ResyncInputChar(s,ch);
/* any character could change our state. if so, leave */
if (s->state != STATE_RESYNC)
return;
}
}
void GameSyncProcessSessionBuffer(session_node *s)
{
char ch;
while (s->receive_list != NULL)
{
if (ReadSessionBytes(s,1,&ch) == False)
return;
GameSyncInputChar(s,ch);
/* any character could change our state back to game normal. if so, leave */
if (s->game->game_state == GAME_NORMAL)
{
if (s->game->object_id == INVALID_OBJECT)
GameSendSystemEnter(s);
GameProcessSessionBuffer(s);
break;
}
}
}
void GameProcessSessionBuffer(session_node *s)
{
client_msg msg;
unsigned short security;
s->game->game_last_message_time = GetTime();
if (s->game->game_state != GAME_NORMAL)
{
GameSyncProcessSessionBuffer(s);
return;
}
/* need to copy only as many bytes as we can hold */
while (s->receive_list != NULL)
{
if (PeekSessionBytes(s,HEADERBYTES,&msg) == False)
return;
if (msg.len != msg.len_verify)
{
/* dprintf("GPSB found len != len_verify %i %i\n",msg_len,msg_len_verify); */
GameSendResync(s);
GameSyncInit(s);
GameSyncProcessSessionBuffer(s);
return;
}
if (msg.len > LEN_MAX_CLIENT_MSG)
{
eprintf("GameProcessSessionBuffer got message too long %i\n",msg.len);
GameSendResync(s);
GameSyncInit(s);
GameSyncProcessSessionBuffer(s);
return;
}
/* now read the header for real, plus the actual data */
if (ReadSessionBytes(s,msg.len+HEADERBYTES,&msg) == False)
return;
/* dprintf("got crc %08x\n",msg.crc16); */
security = GameRandomStreamsStep(s);
/* dprintf("%08x is the next stream thing\n",security); */
security ^= msg.len;
security ^= ((unsigned int)msg.data[0] << 4);
security ^= GetCRC16(msg.data,msg.len);
/* dprintf("%08x is the next stream thing after xor\n",security); */
if (msg.crc16 != security && !s->seeds_hacked)
{
s->seeds_hacked = True;
if (ConfigBool(SECURITY_LOG_SPOOFS))
{
lprintf("GameProcessSessionBuffer found invalid security account %i\n",
s->account->account_id);
}
if (ConfigBool(SECURITY_HANGUP_SPOOFS))
{
HangupSession(s);
}
// can't use the packet, so throw it away and go into resync mode
GameSendResync(s);
GameSyncInit(s);
GameSyncProcessSessionBuffer(s);
return;
}
if (msg.seqno != GetEpoch()) /* old sequence ok, just ignore */
{
/* dprintf("Game got bad epoch from session %i\n",s->session_id); */
continue;
}
/* give up receive mutex, so the interface/socket thread can
read data for us, even if doing something long (GC/save/reload sys) */
if (!ReleaseMutex(s->muxReceive))
eprintf("GPSB released mutex it didn't own in session %i\n",s->session_id);
GameProtocolParse(s,&msg);
if (WaitForSingleObject(s->muxReceive,10000) != WAIT_OBJECT_0)
{
eprintf("GPSB bailed waiting for mutex on session %i\n",s->session_id);
return;
}
/* if hung up, don't touch */
if (s->hangup == True)
return;
if (s->state != STATE_GAME)
return;
if (s->game->game_state != GAME_NORMAL)
return;
}
}