Home | History | Annotate | Line # | Download | only in liblutil
getpass.c revision 1.2 
      1 /*	$NetBSD: getpass.c,v 1.2 2020/08/11 13:15:39 christos Exp $	*/
      2 
      3 /* getpass.c -- get password from user */
      4 /* $OpenLDAP$ */
      5 /* This work is part of OpenLDAP Software <http://www.openldap.org/>.
      6  *
      7  * Copyright 1998-2020 The OpenLDAP Foundation.
      8  * Portions Copyright 1998-2003 Kurt D. Zeilenga.
      9  * Portions Copyright 2009 Howard Chu.
     10  * All rights reserved.
     11  *
     12  * Redistribution and use in source and binary forms, with or without
     13  * modification, are permitted only as authorized by the OpenLDAP
     14  * Public License.
     15  *
     16  * A copy of this license is available in the file LICENSE in the
     17  * top-level directory of the distribution or, alternatively, at
     18  * <http://www.OpenLDAP.org/license.html>.
     19  */
     20 /* Portions Copyright (c) 1992, 1993  Regents of the University of Michigan.
     21  * All rights reserved.
     22  *
     23  * Redistribution and use in source and binary forms are permitted
     24  * provided that this notice is preserved and that due credit is given
     25  * to the University of Michigan at Ann Arbor. The name of the University
     26  * may not be used to endorse or promote products derived from this
     27  * software without specific prior written permission. This software
     28  * is provided ``as is'' without express or implied warranty.
     29  */
     30 /* This work was originally developed by the University of Michigan
     31  * and distributed as part of U-MICH LDAP.  It was adapted for use in
     32  * -llutil by Kurt D. Zeilenga and subsequently rewritten by Howard Chu.
     33  */
     34 
     35 #include <sys/cdefs.h>
     36 __RCSID("$NetBSD: getpass.c,v 1.2 2020/08/11 13:15:39 christos Exp $");
     37 
     38 #include "portable.h"
     39 
     40 #include <stdio.h>
     41 
     42 #include <ac/stdlib.h>
     43 
     44 #include <ac/ctype.h>
     45 #include <ac/signal.h>
     46 #include <ac/string.h>
     47 #include <ac/termios.h>
     48 #include <ac/time.h>
     49 #include <ac/unistd.h>
     50 
     51 #ifndef HAVE_GETPASSPHRASE
     52 
     53 #ifdef HAVE_FCNTL_H
     54 #include <fcntl.h>
     55 #endif
     56 
     57 #ifdef HAVE_CONIO_H
     58 #include <conio.h>
     59 #endif
     60 
     61 #include <lber.h>
     62 #include <ldap.h>
     63 
     64 #include "ldap_defaults.h"
     65 
     66 #define PBUF	512
     67 
     68 #ifdef HAVE_WINSOCK
     69 #define TTY "con:"
     70 #else
     71 #define TTY "/dev/tty"
     72 #endif
     73 
     74 char *
     75 lutil_getpass( const char *prompt )
     76 {
     77 	static char pbuf[PBUF];
     78 	FILE *fi;
     79 	int c;
     80 	unsigned i;
     81 #if defined(HAVE_TERMIOS_H) || defined(HAVE_SGTTY_H)
     82 	TERMIO_TYPE ttyb;
     83 	TERMFLAG_TYPE flags;
     84 	RETSIGTYPE (*sig)( int sig );
     85 #endif
     86 
     87 	if( prompt == NULL ) prompt = _("Password: ");
     88 
     89 #ifdef DEBUG
     90 	if (debug & D_TRACE)
     91 		printf("->getpass(%s)\n", prompt);
     92 #endif
     93 
     94 #if defined(HAVE_TERMIOS_H) || defined(HAVE_SGTTY_H)
     95 	if ((fi = fopen(TTY, "r")) == NULL)
     96 		fi = stdin;
     97 	else
     98 		setbuf(fi, (char *)NULL);
     99 	if (fi != stdin) {
    100 		if (GETATTR(fileno(fi), &ttyb) < 0)
    101 			perror("GETATTR");
    102 		sig = SIGNAL (SIGINT, SIG_IGN);
    103 		flags = GETFLAGS( ttyb );
    104 		SETFLAGS( ttyb, flags & ~ECHO );
    105 		if (SETATTR(fileno(fi), &ttyb) < 0)
    106 			perror("SETATTR");
    107 	}
    108 #else
    109 	fi = stdin;
    110 #endif
    111 	fprintf(stderr, "%s", prompt);
    112 	fflush(stderr);
    113 	i = 0;
    114 	while ( (c = getc(fi)) != EOF && c != '\n' && c != '\r' )
    115 		if ( i < (sizeof(pbuf)-1) )
    116 			pbuf[i++] = c;
    117 #if defined(HAVE_TERMIOS_H) || defined(HAVE_SGTTY_H)
    118 	/* tidy up */
    119 	if (fi != stdin) {
    120 		fprintf(stderr, "\n");
    121 		fflush(stderr);
    122 		SETFLAGS( ttyb, flags );
    123 		if (SETATTR(fileno(fi), &ttyb) < 0)
    124 			perror("SETATTR");
    125 		(void) SIGNAL (SIGINT, sig);
    126 		(void) fclose(fi);
    127 	}
    128 #endif
    129 	if ( c == EOF )
    130 		return( NULL );
    131 	pbuf[i] = '\0';
    132 	return (pbuf);
    133 }
    134 
    135 #endif /* !NEED_GETPASSPHRASE */
    136