/*************************************************************************
* Base worker routine
*
* Child process looks at req_buf to determine requested operation.
* Executes assoicated account routine, sends response back to client.
*************************************************************************/
void process_request(char *req_buf, int conn)
{
char resp_buf[COMM_BUF_SIZE];
int trans_id; /* The transaction type of the request */
sscanf(req_buf, "%d", &trans_id);
DPRINTF(("SERVER: child process %d, processing request \n", child_pid));
/* "p()" num active semaphore */
num_active_sem_buf.sem_num = 0;
num_active_sem_buf.sem_op = -1; /* "p()" */
num_active_sem_buf.sem_flg = SEM_UNDO;
if (semop(num_active_sem_id, &num_active_sem_buf, 1) < 0) {
perror("SERVER: child process, num_active p semop() failed %d\n");
exit (1);
}
switch(trans_id) {
case OPEN_ACCT_TRANS:
open_account(resp_buf);
break;
case DEPOSIT_TRANS:
deposit(req_buf, resp_buf);
break;
case WITHDRAW_TRANS:
withdraw(req_buf, resp_buf);
break;
case BALANCE_TRANS:
balance(req_buf, resp_buf);
break;
default:
handle_bad_trans_id(req_buf, resp_buf);
break;
}
server_comm_send_response(conn, resp_buf);
DPRINTF(("SERVER: child process %d, response sent\n", child_pid));
/* "v()" num active semaphore */
num_active_sem_buf.sem_num = 0;
num_active_sem_buf.sem_op = 1; /* "v()" */
num_active_sem_buf.sem_flg = SEM_UNDO;
if (semop(num_active_sem_id, &num_active_sem_buf, 1) < 0) {
perror("SERVER child process, num_active v semop() failed %d\n");
exit (1);
}
exit(0);
}
void* atm_start(void* atm_data)
{
ATM* My_ATM = (ATM*)atm_data; //Getting my current atm serial number
FILE* command_file = fopen(My_ATM->file_name,"r");
if(command_file == NULL)
{
printf("NO FILE FOUND\n");
exit(1);
}
char* line = NULL; //A string that should hold our current line
ssize_t read; //For the line read
size_t len =0; //For the lmine read
char* delim = (char*)malloc(sizeof(char)*3); //Delimeters
strcpy(delim," \t\n\0");
char* args[5];
//pbank bank = bank_init(account_ARR);
flag = false;
while((read = getline(&line, &len, command_file)) != -1) //We got a new line
{
bool illegal_command = false;
//printf("%s",line);
//NEW ARGS
args[0] = NULL;
args[1] = NULL;
args[2] = NULL;
args[3] = NULL;
args[4] = NULL;
//NEW ARGS
args[0] = strtok(line,delim); //Command
/*printf("%s",line);
args[0] = (char*)malloc(sizeof(*line));
strcpy(args[0],line);*/
if(args[0] == NULL) //Checking we actually got the argument
{
illegal_command = true;
//printf("%d",read);
printf("CANT READ THE COMMAND\n");
free(line);
pthread_exit(NULL);
}
//printf("%s\n",args[0]);
int args_num = 1;
if(!(strcmp(args[0],"O") && strcmp(args[0],"D") && strcmp(args[0],"W") && strcmp(args[0],"B") && strcmp(args[0],"T" )))
{
for(int j=1; (args[j] = strtok(NULL,delim))!=NULL; j++)
{
args_num++;
if(args_num > 5)
{
illegal_command = true;
break;
}
}
/*Illegal command check*/
/*Illegal command check*/
/*Illegal command check*/
/*Illegal command check*/
//Time to decide which command this is
if(!strcmp(args[0],"O"))
{
open_account(args[1],args[2],args[3],My_ATM->serial);
}
else if(!strcmp(args[0],"D"))
{
deposit(args[1],args[2],args[3],My_ATM->serial);
}
else if(!strcmp(args[0],"B"))
{
balance(args[1],args[2],My_ATM->serial);
}
else if(!strcmp(args[0],"W"))
{
withdraw(args[1],args[2],args[3],My_ATM->serial);
}
else if(!strcmp(args[0],"T"))
{
transfer(args[1],args[2],args[3],args[4],My_ATM->serial);
}
}
}
/*free(args[0]);
free(args[1]);
free(args[2]);
free(args[3]);
free(args[4]);*/
free(line);
free(delim);
fclose(command_file);
flag=true;
pthread_exit(NULL);
}
extern int
main(int argc, char **argv)
{
char req_buf[COMM_BUF_SIZE], resp_buf[COMM_BUF_SIZE];
/* The character string buffers passed from
and to client programs. The strings follow
a format defined in atm.h and the parameters
are read in and out using sptring processing
calls sprintf() and sscanf(). */
int conn; /* A handle on which connection (client)
the request came from. Not used initially
but included so that in the future different
requests could be processed cuncurrently. */
int trans_id; /* The transaction type of the current
request */
int done=0;
DPRINTF(("SERVER: main() pid %d, ppid %d, pgrp %d\n",getpid(), getppid(), getpgrp()));
atm_server_init(argc, argv);
for(;;) {
server_comm_get_request(&conn, req_buf);
sscanf(req_buf, "%d", &trans_id);
DPRINTF(("SERVER: main(), request received\n"));
switch(trans_id) {
case OPEN_ACCT_TRANS:
open_account(resp_buf);
break;
case DEPOSIT_TRANS:
deposit(req_buf, resp_buf);
break;
case WITHDRAW_TRANS:
withdraw(req_buf, resp_buf);
break;
case BALANCE_TRANS:
balance(req_buf, resp_buf);
break;
case SHUTDOWN:
if (shutdown_req(req_buf, resp_buf)) done = 1;
break;
default:
handle_bad_trans_id(req_buf, resp_buf);
break;
}
server_comm_send_response(conn, resp_buf);
DPRINTF(("SERVER: main(), response sent\n"));
if(done) break;
}
DPRINTF(("SERVER: main(), shuting down\n"));
server_comm_shutdown();
return 0;
}
