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 1987 Sun Microsystems, Inc. All rights reserved.
24 * Use is subject to license terms.
25 */
26
27 /* Copyright (c) 1984 AT&T */
28 /* All Rights Reserved */
29
30
31 #pragma ident "%Z%%M% %I% %E% SMI"
32
33 /*LINTLIBRARY*/
34 #include <stdio.h>
35 #include <signal.h>
36 #include <termios.h>
37 #include <unistd.h>
38
39 extern void setbuf();
40 extern int fclose(FILE *);
41 extern int fprintf(FILE *, char *, ...);
42 extern int findiop();
43 extern int ioctl();
44 static int intrupt;
45
46 static void catch(void);
47
48 #define MAXPASSWD 8 /* max significant characters in password */
49
50 char *
getpass(char * prompt)51 getpass(char *prompt)
52 {
53 struct termios ttyb;
54 long flags;
55 char *p;
56 int c;
57 FILE *fi;
58 static char pbuf[ MAXPASSWD + 1 ];
59 struct sigvec osv, sv;
60
61 if((fi = fopen("/dev/tty", "r")) == NULL)
62 #ifdef S5EMUL
63 return((char*)NULL);
64 #else
65 fi = stdin;
66 #endif
67 else
68 setbuf(fi, (char*)NULL);
69 sv.sv_handler = catch;
70 sv.sv_mask = 0;
71 sv.sv_flags = SV_INTERRUPT;
72 (void) sigvec(SIGINT, &sv, &osv);
73 intrupt = 0;
74 (void) ioctl(fileno(fi), TCGETS, &ttyb);
75 flags = ttyb.c_lflag;
76 ttyb.c_lflag &= ~(ECHO | ECHOE | ECHOK | ECHONL);
77 (void) ioctl(fileno(fi), TCSETSF, &ttyb);
78 (void) fputs(prompt, stderr);
79 p = pbuf;
80 while( !intrupt &&
81 (c = getc(fi)) != '\n' && c != '\r' && c != EOF ) {
82 if(p < &pbuf[ MAXPASSWD ])
83 *p++ = c;
84 }
85 *p = '\0';
86 ttyb.c_lflag = flags;
87 (void) ioctl(fileno(fi), TCSETSW, &ttyb);
88 (void) putc('\n', stderr);
89 (void) sigvec(SIGINT, &osv, (struct sigvec *)NULL);
90 if(fi != stdin)
91 (void) fclose(fi);
92 #ifdef S5EMUL /* XXX - BOTH versions should probably do this! */
93 if(intrupt)
94 (void) kill(getpid(), SIGINT);
95 #endif
96 return(pbuf);
97 }
98
99 static void
catch(void)100 catch(void)
101 {
102 ++intrupt;
103 }
104