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 (the "License"). 6 * You may not use this file except in compliance with the License. 7 * 8 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 9 * or http://www.opensolaris.org/os/licensing. 10 * See the License for the specific language governing permissions 11 * and limitations under the License. 12 * 13 * When distributing Covered Code, include this CDDL HEADER in each 14 * file and include the License file at usr/src/OPENSOLARIS.LICENSE. 15 * If applicable, add the following below this CDDL HEADER, with the 16 * fields enclosed by brackets "[]" replaced with your own identifying 17 * information: Portions Copyright [yyyy] [name of copyright owner] 18 * 19 * CDDL HEADER END 20 */ 21 /* 22 * Copyright 2006 Sun Microsystems, Inc. All rights reserved. 23 * Use is subject to license terms. 24 */ 25 26 #pragma ident "%Z%%M% %I% %E% SMI" 27 28 /* Copyright (c) 1988 AT&T */ 29 /* All Rights Reserved */ 30 31 32 #pragma weak getpass = _getpass 33 #pragma weak getpassphrase = _getpassphrase 34 35 #include "synonyms.h" 36 #include "file64.h" 37 #include "mtlib.h" 38 #include <stdio.h> 39 #include <sys/types.h> 40 #include <signal.h> 41 #include <unistd.h> 42 #include <stropts.h> 43 #include <termio.h> 44 #include <thread.h> 45 #include <synch.h> 46 #include "libc.h" 47 #include "stdiom.h" 48 #include "tsd.h" 49 50 static void catch(int); 51 static int intrupt; 52 static char *__getpass(const char *, int); 53 54 #define MAXPASSWD 256 /* max significant characters in password */ 55 #define SMLPASSWD 8 /* unix standard characters in password */ 56 57 58 char * 59 getpass(const char *prompt) 60 { 61 return ((char *)__getpass(prompt, SMLPASSWD)); 62 } 63 64 char * 65 getpassphrase(const char *prompt) 66 { 67 return ((char *)__getpass(prompt, MAXPASSWD)); 68 } 69 70 static char * 71 __getpass(const char *prompt, int size) 72 { 73 struct termio ttyb; 74 unsigned short flags; 75 char *p; 76 int c; 77 FILE *fi; 78 char *pbuf = tsdalloc(_T_GETPASS, MAXPASSWD + 1, NULL); 79 void (*sig)(int); 80 rmutex_t *lk; 81 82 if (pbuf == NULL || 83 (fi = fopen("/dev/tty", "rF")) == NULL) 84 return (NULL); 85 setbuf(fi, NULL); 86 sig = signal(SIGINT, catch); 87 intrupt = 0; 88 (void) ioctl(FILENO(fi), TCGETA, &ttyb); 89 flags = ttyb.c_lflag; 90 ttyb.c_lflag &= ~(ECHO | ECHOE | ECHOK | ECHONL); 91 (void) ioctl(FILENO(fi), TCSETAF, &ttyb); 92 FLOCKFILE(lk, stderr); 93 (void) fputs(prompt, stderr); 94 p = pbuf; 95 while (!intrupt && 96 (c = GETC(fi)) != '\n' && c != '\r' && c != EOF) { 97 if (p < &pbuf[ size ]) 98 *p++ = (char)c; 99 } 100 *p = '\0'; 101 ttyb.c_lflag = flags; 102 (void) ioctl(FILENO(fi), TCSETAW, &ttyb); 103 (void) PUTC('\n', stderr); 104 FUNLOCKFILE(lk); 105 (void) signal(SIGINT, sig); 106 (void) fclose(fi); 107 if (intrupt) 108 (void) kill(getpid(), SIGINT); 109 return (pbuf); 110 } 111 112 /* ARGSUSED */ 113 static void 114 catch(int x) 115 { 116 intrupt = 1; 117 } 118