xref: /titanic_41/usr/src/cmd/cmd-inet/usr.bin/ftp/getpass.c (revision ea394cb00fd96864e34d2841b4a22357b621c78f)
1 /*
2  * CDDL HEADER START
3  *
4  * The contents of this file are subject to the terms of the
5  * Common Development and Distribution License, Version 1.0 only
6  * (the "License").  You may not use this file except in compliance
7  * with the License.
8  *
9  * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
10  * or http://www.opensolaris.org/os/licensing.
11  * See the License for the specific language governing permissions
12  * and limitations under the License.
13  *
14  * When distributing Covered Code, include this CDDL HEADER in each
15  * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
16  * If applicable, add the following below this CDDL HEADER, with the
17  * fields enclosed by brackets "[]" replaced with your own identifying
18  * information: Portions Copyright [yyyy] [name of copyright owner]
19  *
20  * CDDL HEADER END
21  */
22 /*
23  *	Copyright 2001 Sun Microsystems, Inc.  All rights reserved.
24  *	Use is subject to license terms.
25  */
26 
27 /*	Copyright (c) 1983, 1984, 1985, 1986, 1987, 1988, 1989 AT&T	*/
28 /*	All Rights Reserved  	*/
29 
30 /*
31  *	University Copyright- Copyright (c) 1982, 1986, 1988
32  *	The Regents of the University of California
33  *	All Rights Reserved
34  *
35  *	University Acknowledgment- Portions of this document are derived from
36  *	software developed by the University of California, Berkeley, and its
37  *	contributors.
38  */
39 
40 #pragma ident	"%Z%%M%	%I%	%E% SMI"
41 
42 #include "ftp_var.h"
43 
44 static	struct termios termios_b;
45 static	tcflag_t flags;
46 static	FILE *fi;
47 
48 /* ARGSUSED */
49 static void
50 intfix(int sig)
51 {
52 	termios_b.c_lflag = flags;
53 	(void) tcsetattr(fileno(fi), TCSADRAIN, &termios_b);
54 	exit(EXIT_FAILURE);
55 }
56 
57 char *
58 mygetpass(char *prompt)
59 {
60 	register char *p;
61 	register int c;
62 	static char pbuf[50+1];
63 	void (*sig)();
64 
65 	stop_timer();
66 	if ((fi = fopen("/dev/tty", "r")) == NULL)
67 		fi = stdin;
68 	else
69 		setbuf(fi, (char *)NULL);
70 
71 	if (tcgetattr(fileno(fi), &termios_b) < 0)
72 		perror("ftp: tcgetattr");	/* go ahead, anyway */
73 	flags = termios_b.c_lflag;
74 
75 	sig = signal(SIGINT, intfix);
76 
77 	termios_b.c_lflag &= ~ECHO;
78 	(void) tcsetattr(fileno(fi), TCSADRAIN, &termios_b);
79 	(void) fprintf(stderr, "%s", prompt);
80 	(void) fflush(stderr);
81 	p = pbuf;
82 	while ((c = getc(fi)) != '\n' && c != EOF) {
83 		if (p < &pbuf[sizeof (pbuf)-1])
84 			*p++ = c;
85 	}
86 	*p = '\0';
87 	(void) fprintf(stderr, "\n");
88 	(void) fflush(stderr);
89 	termios_b.c_lflag = flags;
90 	(void) tcsetattr(fileno(fi), TCSADRAIN, &termios_b);
91 	(void) signal(SIGINT, sig);
92 	if (fi != stdin)
93 		(void) fclose(fi);
94 	reset_timer();
95 	return (pbuf);
96 }
97