CS计算机代考程序代写 #include “bank.h”

#include “bank.h”
#include “ports.h”
#include
#include
#include

Bank* bank_create()
{
Bank *bank = (Bank*) malloc(sizeof(Bank));
if(bank == NULL)
{
perror(“Could not allocate Bank”);
exit(1);
}

// Set up the network state
bank->sockfd=socket(AF_INET,SOCK_DGRAM,0);

bzero(&bank->rtr_addr,sizeof(bank->rtr_addr));
bank->rtr_addr.sin_family = AF_INET;
bank->rtr_addr.sin_addr.s_addr=inet_addr(“127.0.0.1”);
bank->rtr_addr.sin_port=htons(ROUTER_PORT);

bzero(&bank->bank_addr, sizeof(bank->bank_addr));
bank->bank_addr.sin_family = AF_INET;
bank->bank_addr.sin_addr.s_addr=inet_addr(“127.0.0.1”);
bank->bank_addr.sin_port = htons(BANK_PORT);
bind(bank->sockfd,(struct sockaddr *)&bank->bank_addr,sizeof(bank->bank_addr));

// Set up the protocol state
// TODO set up more, as needed

return bank;
}

void bank_free(Bank *bank)
{
if(bank != NULL)
{
close(bank->sockfd);
free(bank);
}
}

ssize_t bank_send(Bank *bank, char *data, size_t data_len)
{
// Returns the number of bytes sent; negative on error
return sendto(bank->sockfd, data, data_len, 0,
(struct sockaddr*) &bank->rtr_addr, sizeof(bank->rtr_addr));
}

ssize_t bank_recv(Bank *bank, char *data, size_t max_data_len)
{
// Returns the number of bytes received; negative on error
return recvfrom(bank->sockfd, data, max_data_len, 0, NULL, NULL);
}

void bank_process_local_command(Bank *bank, char *command, size_t len)
{
// TODO: Implement the bank’s local commands
}

void bank_process_remote_command(Bank *bank, char *command, size_t len)
{
// TODO: Implement the bank side of the ATM-bank protocol

/*
* The following is a toy example that simply receives a
* string from the ATM, prepends “Bank got: ” and echoes
* it back to the ATM before printing it to stdout.
*/

/*
char sendline[1000];
command[len]=0;
sprintf(sendline, “Bank got: %s”, command);
bank_send(bank, sendline, strlen(sendline));
printf(“Received the following:\n”);
fputs(command, stdout);
*/
}