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getpass.c revision 1.1.1.3.12.1 
      1 /*	$NetBSD: getpass.c,v 1.1.1.3.12.1 2014/08/19 23:52:00 tls 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 1998-2014 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 "portable.h"
     36 
     37 #include <stdio.h>
     38 
     39 #include <ac/stdlib.h>
     40 
     41 #include <ac/ctype.h>
     42 #include <ac/signal.h>
     43 #include <ac/string.h>
     44 #include <ac/termios.h>
     45 #include <ac/time.h>
     46 #include <ac/unistd.h>
     47 
     48 #ifndef HAVE_GETPASSPHRASE
     49 
     50 #ifdef HAVE_FCNTL_H
     51 #include <fcntl.h>
     52 #endif
     53 
     54 #ifdef HAVE_CONIO_H
     55 #include <conio.h>
     56 #endif
     57 
     58 #include <lber.h>
     59 #include <ldap.h>
     60 
     61 #include "ldap_defaults.h"
     62 
     63 #define PBUF	512
     64 
     65 #ifdef HAVE_WINSOCK
     66 #define TTY "con:"
     67 #else
     68 #define TTY "/dev/tty"
     69 #endif
     70 
     71 char *
     72 lutil_getpass( const char *prompt )
     73 {
     74 	static char pbuf[PBUF];
     75 	FILE *fi;
     76 	int c;
     77 	unsigned i;
     78 #if defined(HAVE_TERMIOS_H) || defined(HAVE_SGTTY_H)
     79 	TERMIO_TYPE ttyb;
     80 	TERMFLAG_TYPE flags;
     81 	RETSIGTYPE (*sig)( int sig );
     82 #endif
     83 
     84 	if( prompt == NULL ) prompt = _("Password: ");
     85 
     86 #ifdef DEBUG
     87 	if (debug & D_TRACE)
     88 		printf("->getpass(%s)\n", prompt);
     89 #endif
     90 
     91 #if defined(HAVE_TERMIOS_H) || defined(HAVE_SGTTY_H)
     92 	if ((fi = fopen(TTY, "r")) == NULL)
     93 		fi = stdin;
     94 	else
     95 		setbuf(fi, (char *)NULL);
     96 	if (fi != stdin) {
     97 		if (GETATTR(fileno(fi), &ttyb) < 0)
     98 			perror("GETATTR");
     99 		sig = SIGNAL (SIGINT, SIG_IGN);
    100 		flags = GETFLAGS( ttyb );
    101 		SETFLAGS( ttyb, flags & ~ECHO );
    102 		if (SETATTR(fileno(fi), &ttyb) < 0)
    103 			perror("SETATTR");
    104 	}
    105 #else
    106 	fi = stdin;
    107 #endif
    108 	fprintf(stderr, "%s", prompt);
    109 	fflush(stderr);
    110 	i = 0;
    111 	while ( (c = getc(fi)) != EOF && c != '\n' && c != '\r' )
    112 		if ( i < (sizeof(pbuf)-1) )
    113 			pbuf[i++] = c;
    114 #if defined(HAVE_TERMIOS_H) || defined(HAVE_SGTTY_H)
    115 	/* tidy up */
    116 	if (fi != stdin) {
    117 		fprintf(stderr, "\n");
    118 		fflush(stderr);
    119 		SETFLAGS( ttyb, flags );
    120 		if (SETATTR(fileno(fi), &ttyb) < 0)
    121 			perror("SETATTR");
    122 		(void) SIGNAL (SIGINT, sig);
    123 		(void) fclose(fi);
    124 	}
    125 #endif
    126 	if ( c == EOF )
    127 		return( NULL );
    128 	pbuf[i] = '\0';
    129 	return (pbuf);
    130 }
    131 
    132 #endif /* !NEED_GETPASSPHRASE */
    133