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Annotation of 43BSD/lib/libc/gen/getpass.c, revision 1.1

1.1     ! root        1: #if defined(LIBC_SCCS) && !defined(lint)
        !             2: static char sccsid[] = "@(#)getpass.c  5.2 (Berkeley) 3/9/86";
        !             3: #endif LIBC_SCCS and not lint
        !             4: 
        !             5: #include <stdio.h>
        !             6: #include <signal.h>
        !             7: #include <sgtty.h>
        !             8: 
        !             9: char *
        !            10: getpass(prompt)
        !            11: char *prompt;
        !            12: {
        !            13:        struct sgttyb ttyb;
        !            14:        int flags;
        !            15:        register char *p;
        !            16:        register c;
        !            17:        FILE *fi;
        !            18:        static char pbuf[9];
        !            19:        int (*signal())();
        !            20:        int (*sig)();
        !            21: 
        !            22:        if ((fi = fdopen(open("/dev/tty", 2), "r")) == NULL)
        !            23:                fi = stdin;
        !            24:        else
        !            25:                setbuf(fi, (char *)NULL);
        !            26:        sig = signal(SIGINT, SIG_IGN);
        !            27:        ioctl(fileno(fi), TIOCGETP, &ttyb);
        !            28:        flags = ttyb.sg_flags;
        !            29:        ttyb.sg_flags &= ~ECHO;
        !            30:        ioctl(fileno(fi), TIOCSETP, &ttyb);
        !            31:        fprintf(stderr, "%s", prompt); fflush(stderr);
        !            32:        for (p=pbuf; (c = getc(fi))!='\n' && c!=EOF;) {
        !            33:                if (p < &pbuf[8])
        !            34:                        *p++ = c;
        !            35:        }
        !            36:        *p = '\0';
        !            37:        fprintf(stderr, "\n"); fflush(stderr);
        !            38:        ttyb.sg_flags = flags;
        !            39:        ioctl(fileno(fi), TIOCSETP, &ttyb);
        !            40:        signal(SIGINT, sig);
        !            41:        if (fi != stdin)
        !            42:                fclose(fi);
        !            43:        return(pbuf);
        !            44: }

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