ipmode.c

BeginningLinuxProgramming example6

/*  First, we set up the program and the initial curses calls.  */

#include <unistd.h>
#include <stdlib.h>
#include <curses.h>
#include <string.h>

#define PW_LEN 25
#define NAME_LEN 256

int main() {
    char name[NAME_LEN];
    char password[PW_LEN];
    char *real_password = "xyzzy";
    int i = 0;

    initscr();

    move(5, 10);
    printw("%s", "Please login:");

    move(7, 10);
    printw("%s", "User name: ");
    getstr(name);

    move(9, 10);  
    printw("%s", "Password: ");
    refresh();

/*  When the user enters their password, we need to stop the password being echoed to the screen.
    Then we check the password against xyzzy.  */

    cbreak();
    noecho();

    memset(password, '\0', sizeof(password));  
    while (i < PW_LEN) {
        password[i] = getch();
        move(9, 20 + i); 
        addch('*');
        refresh();
        if (password[i] == '\n') break;
        if (strcmp(password, real_password) == 0) break;
        i++;
    }

/*  Finally, we re-enable the keyboard echo and print out success or failure.  */

    echo();
    nocbreak();

    move(11, 10);
    if (strcmp(password, real_password) == 0) printw("%s", "Correct");
    else printw("%s", "Wrong");
    refresh();

    endwin();
    exit(EXIT_SUCCESS);
}