Qshell Interpreter (qsh) - FTP Directory Listing - IBM

} /* End of switch */
} /* End of while */
/* Convert a dotted decimal address to a 32-bit IP address. */
hostname = argv[optind];
ip_addr = inet_addr(hostname);
/* When inet_addr() returns -1 we'll assume the user specified
a host name. */
if (ip_addr == -1) {
/* Try to find the host by name. */
host_p = gethostbyname(hostname);
if (host_p) {
memcpy(&ip_addr, host_p->h_addr, host_p->h_length);
sysname = host_p->h_name;
}
else {
fprintf(stderr, “qshc: Could not find host %s\n”, hostname);
exit(1);
}
} /* End of if */
/* The user specified a IP address. */
else {
/* Try to find the host by address. */
host_addr.s_addr = ip_addr;
host_p = gethostbyaddr((char *)&host_addr.s_addr, sizeof(host_addr),
AF_INET);
if (host_p) {
sysname = host_p->h_name;
}
else {
fprintf(stderr, “qshc: Could not find host %s\n”, hostname);
exit(1);
}
} /* End of else */
/********************************************************************/
/* Connect to the qsh server on the specified system. */
/********************************************************************/
/* Create a socket. */
if ((sd = socket(AF_INET, SOCK_STREAM, IPPROTO_IP)) < 0) {
perror(“qshc: socket() failed”);
exit(1);
}
/* Connect to the qsh server on the specified AS/400. */
memset(&svr_addr, '\0', sizeof(svr_addr));
svr_addr.sin_family = AF_INET;
svr_addr.sin_port = htons(port);
svr_addr.sin_addr.s_addr = ip_addr;
if (connect(sd, (struct sockaddr *)&svr_addr, sizeof(svr_addr)) != 0) {
perror(“qshc: connect() failed”);
exit(1);
}
/********************************************************************/
/* Send the user name and password to the server. */
/********************************************************************/
/* Allocate buffers for translating input and output. */
ascii_buf = (char *)malloc(DEFAULT_BUF);
memset(ascii_buf, '\0', DEFAULT_BUF);
ebcdic_buf = (char *)malloc(DEFAULT_BUF);
memset(ebcdic_buf, '\0', DEFAULT_BUF);
ascii_user = ascii_buf;
ascii_pwd = ascii_buf + 100;
ebcdic_user = ebcdic_buf;
ebcdic_pwd = ebcdic_buf + 100;
/* Prompt the user for the user name and password. */
if (nflag) {
printf(“Enter user name: ”);
gets(ascii_user);
ascii_pwd = getpass(“Enter password: ”);
Chapter 6. Remote client examples 129