inline buffer rsa_key::public_decrypt(const buffer& buf, int padding) const
{
buffer result(size());
result.data().resize(public_decrypt(buffer_cast<uint8_t>(result), buffer_size(result), buffer_cast<uint8_t>(buf), buffer_size(buf), padding));
return result;
}
int main() {
char sendline[_MAX_BUFF] = "";
string return_value;
int pid;
string user_name, item_price;
/* Create a TCP socket */
char *ptr_price, *ptr_dprice, *ptr_de1, *ptr_en, *ptr_de2;
char recvline[_MAX_BUFF];
listenfd = socket(AF_INET, SOCK_STREAM, 0);
/* Initialize server's address and well-known port */
bzero(&servaddr, sizeof (servaddr));
servaddr.sin_family = AF_INET;
servaddr.sin_addr.s_addr = htonl(INADDR_ANY);
servaddr.sin_port = htons(1200); /* daytime server */
/* Bind server’s address and port to the socket */
bind(listenfd, (struct sockaddr *) &servaddr, sizeof (servaddr));
/* Convert socket to a listening socket – max 100 pending clients*/
listen(listenfd, 100);
cout << "bank hello" << endl;
/* Wait for client connections and accept them */
while (true) {
clilen = sizeof (cliaddr);
connfd = accept(listenfd, (struct sockaddr *) &cliaddr, (socklen_t*) & clilen);
if (connfd < 0) {
perror("ERROR on accept");
exit(5);
}
if ((pid = fork()) == 0) {
close(listenfd); //Child server;
bzero(recvline, sizeof (recvline)); //read card number from psystem
if (read(connfd, recvline, sizeof (recvline)) > 0) {
ptr_en = recvline;
ptr_de1 = public_decrypt(ptr_en, PSYS_PUB_K);
if (ptr_de1 != NULL) {
cout << "Verfiy the psystem digital signature" << endl;
}
ptr_de2 = private_decrypt(ptr_de1, BANK_PRI_K);
bzero(recvline, sizeof (recvline));
}
if (read(connfd, recvline, sizeof (recvline)) > 0) {
ptr_price = recvline;
ptr_dprice = public_decrypt(ptr_price, PSYS_PUB_K);
item_price = ptr_dprice;
return_value = renew_account(ptr_de2, ptr_dprice);
strncat(sendline, return_value.c_str(), return_value.size());
write(connfd, sendline, strlen(sendline));
bzero(recvline, sizeof (recvline));
}
if (read(connfd, recvline, sizeof (recvline)) > 0) {
cout << "Customer:" << recvline << endl;
user_name = recvline;
if (return_value == str_success) {
renew_activity(user_name, item_price);
}
bzero(recvline, sizeof (recvline));
}
close(connfd);
exit(0);
}
close(connfd); //Parent server;
}
return 0;
}
