Subversion Repositories planix.SVN

#include <u.h>
#include <libc.h>
#include <../boot/boot.h>

void
getpasswd(char *p, int len)
{
        char c;
        int i, n, fd;

        fd = open("#c/consctl", OWRITE);
        if(fd < 0)
                fatal("can't open consctl; please reboot");
        write(fd, "rawon", 5);
 Prompt:                
        print("password: ");
        n = 0;
        for(;;){
                do{
                        i = read(0, &c, 1);
                        if(i < 0)
                                fatal("can't read cons; please reboot");
                }while(i == 0);
                switch(c){
                case '\n':
                        p[n] = '\0';
                        close(fd);
                        print("\n");
                        return;
                case '\b':
                        if(n > 0)
                                n--;
                        break;
                case 'u' - 'a' + 1:             /* cntrl-u */
                        print("\n");
                        goto Prompt;
                default:
                        if(n < len - 1)
                                p[n++] = c;
                        break;
                }
        }
}