int connectionReceiveCommand(connection *con) {
int socketFD = con->tArgs->socketFD;
command *cmd = con->cmd;
error *err = con->err;
// if (cmd->args != NULL) {
// free(cmd->args);
// cmd->args = NULL;
// }
destroyCommandArgs(cmd);
printf("\n>====== Waiting to receive command from client...\n");
char buf[BUFSIZE];
memset(buf, 0, BUFSIZE);
int term;
if (messageReceive(socketFD, buf, &(con->dataBytes), &(con->data), &term)) {
if (term) {
ERROR(err, E_EXIT);
} else {
ERROR(err, E_MSG);
}
return 1;
}
return parseCommand(buf, cmd, err);
}
PTR_MESSAGE gameQuestionAnswered(int myID, int socket, int seconds, int answer)
{
PTR_MESSAGE msg;
struct timeval startzeit;
struct timeval endzeit;
unsigned long points;
gettimeofday(&startzeit, 0);
msg = messageReceive(QuestionAnswered, socket, seconds);
if(msg == NULL)
{
syslogWriteFormatDebug(ldebug, "Could not receive QuestionAnswered message.");
return NULL;
}
else if(msg == (PTR_MESSAGE) -1)
{
syslogWriteFormatDebug(ldebug, "Client %i timed out.", myID);
return NULL;
}
gettimeofday(&endzeit,0);
if((endzeit.tv_sec > (startzeit.tv_sec + seconds)) || ((endzeit.tv_sec == (startzeit.tv_sec + seconds)) && (endzeit.tv_usec > startzeit.tv_usec)))
{
free(msg);
return NULL;
}
else
{
if((uint8_t) msg->content[0] == (uint8_t) answer)
{
points = 0;
if(1000 * seconds - (endzeit.tv_sec * 1000 + endzeit.tv_usec / 1000 - startzeit.tv_sec * 1000 - startzeit.tv_usec / 1000) > 0)
{
points = scoreForTimeLeft(1000 * seconds - (endzeit.tv_sec * 1000 + endzeit.tv_usec / 1000 - startzeit.tv_sec * 1000 - startzeit.tv_usec / 1000), 1000 * seconds);
}
if(points != 0)
{
syslogWriteFormatDebug(ldebug,"Points have changed. Adjusting points in the memory now.");
userdataLock();
userdataSetPoints(myID, userdataGetPoints(myID) + (int) points);
userdataUnlock();
if(gameBroadcast((PTR_MESSAGE) userdataGetList()) == false)
{
syslogWriteFormatDebug(lerror, "Could not send the PlayerList after the points changed");
}
}
}
return msg;
}
}
HRESULT gameSendCatalogs(int myID, int socket)
{
int numCatalogs;
int i;
PTR_MESSAGE msg;
syslogWriteFormatDebug(ldebug, "Player with myID: %i entering gameSendCatalogs.", myID);
// wait infinitely to check for closed sockets
msg = messageReceive(CatalogRequest, socket, -1);
if(msg == NULL)
{
syslogWriteFormatDebug(lerror, "No CatalogRequest message received, Player %i leaves the server.", myID);
return ERROR;
}
syslogWriteFormatDebug(ldebug, "received catalogrequest message: type: %i length: %i", msg->type, msg->length);
free(msg);
numCatalogs = CatalogGetNumCatalogs();
syslogWriteFormatDebug(ldebug, "Number of Catalogs: %i", numCatalogs);
for(i = 0; i < numCatalogs; i++)
{
syslogWriteFormatDebug(ldebug, "CatalogFilename number %i: %s", i, (char *) CatalogGetFilename(i));
if(messageFS(CatalogResponse, -1, (char *) CatalogGetFilename(i), socket) == false)
{
syslogWriteFormatDebug(lerror, "Could not send CatalogResponse message, Player %i leaves the server.", myID);
return ERROR;
}
}
if(messageFS(CatalogResponse, -1, "", socket) == false)
{
syslogWriteFormatDebug(lerror, "Could not send empty CatalogResponse message, Player %i leaves the server.", myID);
return ERROR;
}
return OK;
}
HRESULT gameGamemaster(int myID, int socket, char* currentCatalog, int* catalogLength, int* actualQuestion)
{
PTR_MESSAGE msg;
if(gameSendCatalogs(myID, socket) == ERROR)
{
return ERROR;
}
msg = NULL;
do
{
Next:
// waiting infinitely here, to determine if the socket was closed
msg = messageReceive(0, socket, -1);
if(msg != NULL)
{
if(msg->type == CatalogChange)
{
memset(currentCatalog, '\0', 400);
memcpy(currentCatalog, msg->content, msg->length);
*catalogLength = msg->length;
gameBroadcast(msg);
CatalogClose();
if(CatalogLoad(currentCatalog) == false)
{
if(messageFS(ErrorWarning, -1, "0Game could not be started yet Catalog could not be loaded", socket) == false)
{
syslogWriteFormatDebug(lerror, "Could not send the ErrorWarning to the GameMaster to tell him the game could not be started.");
free(msg);
return ERROR;
}
free(msg);
return ERROR;
}
free(msg);
}
else if(msg->type == StartGame)
{
if(userdataCount() < 2)
{
if(messageFS(ErrorWarning, -1, "0Game could not be started yet too less players", socket) == false)
{
syslogWriteFormatDebug(lerror, "Could not send the ErrorWarning to the GameMaster to tell him the game could not be started.");
free(msg);
return ERROR;
}
free(msg);
goto Next;
}
else
{
if(gameBroadcast(msg) == false)
{
if(messageFS(ErrorWarning, -1, "0Game could not be started yet", socket) == false)
{
syslogWriteFormatDebug(lerror, "Could not send the ErrorWarning to the GameMaster to tell him the game could not be started.");
free(msg);
return ERROR;
}
}
CatalogClose();
if(CatalogLoad(currentCatalog) == false)
{
if(messageFS(ErrorWarning, -1, "0Game could not be started yet Catalog could not be loaded", socket) == false)
{
syslogWriteFormatDebug(lerror, "Could not send the ErrorWarning to the GameMaster to tell him the game could not be started.");
free(msg);
return ERROR;
}
free(msg);
return ERROR;
}
free(msg);
userdataLock();
userdataSetStage(STAGE_GAME);
userdataUnlock();
break;
}
}
}
else
{
syslogWriteFormatDebug(ldebug, "Player %i timed out", myID);
return ERROR;
}
}
while(1);
if(gamePlay(myID, socket, actualQuestion) == ERROR)
{
return ERROR;
}
return OK;
}
HRESULT gamePlay(int myID, int socket, int* actualQuestion)
{
PTR_MESSAGE msg;
int numQuest;
uint16_t seconds;
int answer;
uint8_t selection;
uint8_t result[2];
Question* startofquestion;
syslogWriteFormatDebug(ldebug, "Player %i entered gamePlay.", myID);
if(myID == 0 && gameBroadcast((PTR_MESSAGE) userdataGetList()) == false)
{
syslogWriteFormatDebug(lerror, "Could not send the PlayerList as the game starts");
}
do
{
msg = NULL;
do
{
// wait infinitely to check for closed sockets
msg = messageReceive(0, socket, -1);
if(msg == NULL)
{
syslogWriteFormatDebug(lerror, "Could not receive QuestionRequest as expected, might be a timeout.");
return ERROR;
} else if(msg->type == CatalogChange)
{
syslogWriteFormatDebug(lwarn, "Received CatalogChange where it is not expected.");
free(msg);
} else if(msg->type == QuestionRequest)
{
while(userdataGetStage() != STAGE_GAME)
{
usleep(10000);
}
break;
}
}
while(1 == 1);
numQuest = CatalogGetCatalogByteSize() / sizeof(Question);
if(*actualQuestion < numQuest)
{
if(messageFS(QUestion, sizeof(QUESTION) - 3, (char*) (CatalogGetCatalogPtr() + sizeof(Question) * *actualQuestion), socket) == false)
{
syslogWriteFormatDebug(lerror, "Could not send Question %s to player %i.", CatalogGetCatalogPtr(), myID);
return ERROR;
}
(*actualQuestion)++;
}
else
{
syslogWriteFormatDebug(lerror, "Something regarding Catalog and Question answered went wrong.");
return ERROR;
}
startofquestion = (Question*) (CatalogGetCatalogPtr() + sizeof(Question) * (*actualQuestion-1));
seconds = (uint16_t) startofquestion->timeout;
answer = (int) startofquestion->correct;
msg = gameQuestionAnswered(myID, socket, seconds, answer);
if(msg == NULL)
{
selection = 255;
}
else
{
selection = (uint8_t) msg->content[0];
}
free(msg);
result[0] = selection;
result[1] = (uint8_t) answer;
if(messageFS(QuestionResult, 2, (char*) result, socket) == false)
{
syslogWriteFormatDebug(lerror, "Could not send QuestionResult to player %i selection %i answer %i.", myID, selection, answer);
return ERROR;
}
syslogWriteFormatDebug(ldebug, "Question Player %i is working at: %i, total number of Questions: %i", myID, *actualQuestion, numQuest);
if (*actualQuestion == numQuest)
{
if(messageFS(QUestion, -1, "", socket) == false)
{
syslogWriteFormatDebug(lerror, "Could not send EmptyQuestion to player %i.", myID);
return ERROR;
}
}
}
while(*actualQuestion < numQuest);
return OK;
}
