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Annotation of researchv10dc/libc/stdio/getpass.c, revision 1.1

1.1     ! root        1: /* @(#)getpass.c       4.2 (Berkeley) 7/1/81 */
        !             2: #include <stdio.h>
        !             3: #include <signal.h>
        !             4: #include <sys/ttyio.h>
        !             5: 
        !             6: char *
        !             7: getpass(prompt)
        !             8: char *prompt;
        !             9: {
        !            10:        struct sgttyb ttyb;
        !            11:        int flags;
        !            12:        register char *p;
        !            13:        register c;
        !            14:        FILE *fi;
        !            15:        static char pbuf[9];
        !            16:        int (*signal())();
        !            17:        int (*sig)();
        !            18: 
        !            19:        if ((fi = fopen("/dev/tty", "r")) == NULL)
        !            20:                fi = stdin;
        !            21:        else
        !            22:                setbuf(fi, (char *)NULL);
        !            23:        sig = signal(SIGINT, SIG_IGN);
        !            24:        ioctl(fileno(fi), TIOCGETP, &ttyb);
        !            25:        flags = ttyb.sg_flags;
        !            26:        ttyb.sg_flags &= ~ECHO;
        !            27:        ioctl(fileno(fi), TIOCSETP, &ttyb);
        !            28:        fprintf(stderr, "%s", prompt); fflush(stderr);
        !            29:        for (p=pbuf; (c = getc(fi))!='\n' && c!=EOF;) {
        !            30:                if (p < &pbuf[8])
        !            31:                        *p++ = c;
        !            32:        }
        !            33:        *p = '\0';
        !            34:        fprintf(stderr, "\n"); fflush(stderr);
        !            35:        ttyb.sg_flags = flags;
        !            36:        ioctl(fileno(fi), TIOCSETP, &ttyb);
        !            37:        signal(SIGINT, sig);
        !            38:        if (fi != stdin)
        !            39:                fclose(fi);
        !            40:        return(pbuf);
        !            41: }

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