Subversion Repositories planix.SVN

#define _POSIX_SOURCE
#define _RESEARCH_SOURCE
#include <stdio.h>
#include <signal.h>
#include <limits.h>
#include <libv.h>

char *
getpass(char *prompt)
{
        int c;
        char *p;
        FILE *fi;
        static char pbuf[PASS_MAX];
        void (*sig)(int);

        if ((fi = fopen("/dev/cons", "r")) == NULL)
                fi = stdin;
        else
                setbuf(fi, NULL);
        sig = signal(SIGINT, SIG_IGN);
        tty_echooff(fileno(fi));
        fprintf(stderr, "%s", prompt);
        fflush(stderr);

        for (p = pbuf; (c = getc(fi)) != '\n' && c != EOF; )
                if (c == ('u' & 037))
                        p = pbuf;
                else if (c == '\b') {
                        if (p > pbuf)
                                p--;
                } else if (p < &pbuf[sizeof(pbuf)-1])
                        *p++ = c;
        *p = '\0';

        fprintf(stderr, "\n");
        fflush(stderr);
        tty_echoon(fileno(fi));
        signal(SIGINT, sig);
        if (fi != stdin)
                fclose(fi);
        return(pbuf);
}