static void
shutDown(int a) {
printf("Client is shutting down\n");
logout();
semctl(semid, 0,IPC_RMID, NULL);
disconnectFromChannel(channel);
free(channel);
close(syncPipe[0]);
close(signalPipe[0]);
kill(receiverPid, SIGHUP);
exit(0);
}
/*Jamas termina, si termina , cierra el programa*/
void
beginShell(){
int op;
char buff[100];
while(1){
printf("Elija una opcion\n");
printf("\t(1) Registrarse\n");
printf("\t(2) Login\n");
printf("\t(3) Salir\n");
scanf("%d", &op);
BORRA_BUFFER
// printf("Opcode leido: %d\n", op);
switch (op) {
case 1:
if ( reg() == 0 ) {
read(syncPipe[0],buff,20);
if(!strcmp(buff,"GOTO_SHELL")){
// printf("Yendo al shell\n");
shell();
}
}
break;
case 2:
logg();
read(syncPipe[0],buff,20);
// printf("Leido del pipe: %s\n", buff);
if(!strcmp(buff,"GOTO_SHELL"))
shell();
break;
case 3:
disconnectFromChannel(channel);
kill(receiverPid, SIGHUP);
exit(0);
default:
printf("Opcion invalida"); break;
}
}
return;
}
int
main(void) {
char buff[100];
channel = (void *)malloc(200);
/*---Establezco los canales de comunicacion---*/
getDefaultChannel(channel);
if ( connectToChannel(channel,CLIENT) < 0 ) {
printf("Server not available\n");
return 0;
}
itoa(buff,GET_CHANNEL);
sendPacket(buff,strlen(buff)+1, channel, CLIENT);
receivePacket(buff,MAX_SIZE, channel, CLIENT);
disconnectFromChannel(channel);
stringToChannel(buff, channel);
connectToChannel(channel,CLIENT);
/*---Abro el pipe de sincronismo entre padre e hijo---*/
if( pipe(syncPipe) == -1 ){
printf("Error al crear el pipe de sincronismo en el client.\n");
return 0;
}
/*---Abro el pipe de pasaje de argumentos para seniales---*/
if( pipe(signalPipe) == -1 ){
printf("Error al crear el pipe de args para seniales.\n");
return 0;
}
/*---Seteo el semaforo---*/
int semkey = getpid();
semun x;
x.val = 1;
int flags = IPC_CREAT | IPC_EXCL;
if ( ( semid = semget(semkey, 1, 0666 | flags )) == -1 ) {
printf("Error al crear semaforo: %d\n", semkey);
return -1;
}
if ( semctl(semid, 0, SETVAL, x) == -1 ) {
printf("Error al configurar semaforo\n");
return -1;
}
/*---Configuracion de manejo de seniales---*/
/* SIGUSR1 -> SHELL_SIGNAL */
/* SIGUSR2 -> DRAFT_SIGNAL */
struct sigaction draftSigAct;
draftSigAct.sa_handler = draftSignalHandler;
sigemptyset(&(draftSigAct.sa_mask));
draftSigAct.sa_flags = SA_NODEFER;
struct sigaction shellSigAct;
shellSigAct.sa_handler = shellSignalHandler;
sigemptyset(&(shellSigAct.sa_mask));
shellSigAct.sa_flags = SA_NODEFER;
sigaction( SIGUSR1, &shellSigAct, NULL);
sigaction( SIGUSR2, &draftSigAct, NULL);
static struct sigaction act3;
act3.sa_handler = catchSigPipe;
sigfillset(&(act3.sa_mask));
sigaction(SIGPIPE, &act3, NULL);
static struct sigaction act1;
static struct sigaction act2;
/*Convenimos a este proceso como programa de envio de datos*/
senderPid = getpid();
pid_t auxPid;
switch( auxPid = fork() ) {
case -1:
printf("Error al configurar el cliente.\n");
break;
case 0:
receiverPid = getpid();
close(syncPipe[0]);
close(signalPipe[0]);
receive();
break;
default:
act1.sa_handler = shutDown;
sigfillset(&(act1.sa_mask));
sigaction(SIGINT, &act1, NULL);
act2.sa_handler = shutDown;
sigfillset(&(act2.sa_mask));
sigaction(SIGTSTP, &act2, NULL);
receiverPid = auxPid;
close(signalPipe[1]);
close(syncPipe[1]);
raise(SIGUSR1);break;
}
return 0;
}
QDSActionPrivate::~QDSActionPrivate()
{
disconnectFromChannel();
}