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Annotation of 43BSDTahoe/ucb/ftp/getpass.c, revision 1.1.1.1

1.1       root        1: /*
                      2:  * Copyright (c) 1985 Regents of the University of California.
                      3:  * All rights reserved.
                      4:  *
                      5:  * Redistribution and use in source and binary forms are permitted
                      6:  * provided that the above copyright notice and this paragraph are
                      7:  * duplicated in all such forms and that any documentation,
                      8:  * advertising materials, and other materials related to such
                      9:  * distribution and use acknowledge that the software was developed
                     10:  * by the University of California, Berkeley.  The name of the
                     11:  * University may not be used to endorse or promote products derived
                     12:  * from this software without specific prior written permission.
                     13:  * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
                     14:  * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
                     15:  * WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE.
                     16:  */
                     17: 
                     18: #ifndef lint
                     19: static char sccsid[] = "@(#)getpass.c  5.6 (Berkeley) 6/29/88";
                     20: #endif /* not lint */
                     21: 
                     22: #include <stdio.h>
                     23: #include <signal.h>
                     24: #include <sgtty.h>
                     25: 
                     26: static struct sgttyb ttyb;
                     27: static int flags;
                     28: static FILE *fi;
                     29: 
                     30: static intfix()
                     31: {
                     32:        ttyb.sg_flags = flags;
                     33:        if (fi != NULL)
                     34:                (void) stty(fileno(fi), &ttyb);
                     35:        exit(SIGINT);
                     36: }
                     37: 
                     38: char *
                     39: mygetpass(prompt)
                     40: char *prompt;
                     41: {
                     42:        register char *p;
                     43:        register c;
                     44:        static char pbuf[50+1];
                     45:        int (*signal())();
                     46:        int (*sig)();
                     47: 
                     48:        if ((fi = fopen("/dev/tty", "r")) == NULL)
                     49:                fi = stdin;
                     50:        else
                     51:                setbuf(fi, (char *)NULL);
                     52:        sig = signal(SIGINT, intfix);
                     53:        (void) gtty(fileno(fi), &ttyb);
                     54:        flags = ttyb.sg_flags;
                     55:        ttyb.sg_flags &= ~ECHO;
                     56:        (void) stty(fileno(fi), &ttyb);
                     57:        fprintf(stderr, "%s", prompt); (void) fflush(stderr);
                     58:        for (p=pbuf; (c = getc(fi))!='\n' && c!=EOF;) {
                     59:                if (p < &pbuf[sizeof(pbuf)-1])
                     60:                        *p++ = c;
                     61:        }
                     62:        *p = '\0';
                     63:        fprintf(stderr, "\n"); (void) fflush(stderr);
                     64:        ttyb.sg_flags = flags;
                     65:        (void) stty(fileno(fi), &ttyb);
                     66:        (void) signal(SIGINT, sig);
                     67:        if (fi != stdin)
                     68:                (void) fclose(fi);
                     69:        return(pbuf);
                     70: }

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