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 /* 23 * Copyright 2009 Sun Microsystems, Inc. All rights reserved. 24 * Use is subject to license terms. 25 */ 26 27 /* Copyright (c) 1988 AT&T */ 28 /* All Rights Reserved */ 29 30 #pragma weak _getpass = getpass 31 #pragma weak _getpassphrase = getpassphrase 32 33 #include "lint.h" 34 #include "file64.h" 35 #include "mtlib.h" 36 #include <stdio.h> 37 #include <sys/types.h> 38 #include <signal.h> 39 #include <unistd.h> 40 #include <stropts.h> 41 #include <termio.h> 42 #include <thread.h> 43 #include <synch.h> 44 #include "libc.h" 45 #include "stdiom.h" 46 #include "tsd.h" 47 48 static int intrupt; 49 static char *__getpass(const char *, int); 50 51 #define MAXPASSWD 256 /* max significant characters in password */ 52 #define SMLPASSWD 8 /* unix standard characters in password */ 53 54 55 char * 56 getpass(const char *prompt) 57 { 58 return ((char *)__getpass(prompt, SMLPASSWD)); 59 } 60 61 char * 62 getpassphrase(const char *prompt) 63 { 64 return ((char *)__getpass(prompt, MAXPASSWD)); 65 } 66 67 static void catch(int); 68 69 static char * 70 __getpass(const char *prompt, int size) 71 { 72 struct termio ttyb; 73 unsigned short flags; 74 char *p; 75 int c; 76 FILE *fi; 77 char *pbuf = tsdalloc(_T_GETPASS, MAXPASSWD + 1, NULL); 78 struct sigaction act, osigint, osigtstp; 79 80 if (pbuf == NULL || 81 (fi = fopen("/dev/tty", "r+F")) == NULL) 82 return (NULL); 83 setbuf(fi, NULL); 84 85 intrupt = 0; 86 act.sa_flags = 0; 87 act.sa_handler = catch; 88 (void) sigemptyset(&act.sa_mask); 89 (void) sigaction(SIGINT, &act, &osigint); /* trap interrupt */ 90 act.sa_handler = SIG_IGN; 91 (void) sigaction(SIGTSTP, &act, &osigtstp); /* ignore stop */ 92 (void) ioctl(fileno(fi), TCGETA, &ttyb); 93 flags = ttyb.c_lflag; 94 ttyb.c_lflag &= ~(ECHO | ECHOE | ECHOK | ECHONL); 95 (void) ioctl(fileno(fi), TCSETAF, &ttyb); 96 97 (void) fputs(prompt, fi); 98 p = pbuf; 99 while (!intrupt && 100 (c = GETC(fi)) != '\n' && c != '\r' && c != EOF) { 101 if (p < &pbuf[ size ]) 102 *p++ = (char)c; 103 } 104 *p = '\0'; 105 (void) PUTC('\n', fi); 106 107 ttyb.c_lflag = flags; 108 (void) ioctl(fileno(fi), TCSETAW, &ttyb); 109 (void) sigaction(SIGINT, &osigint, NULL); 110 (void) sigaction(SIGTSTP, &osigtstp, NULL); 111 (void) fclose(fi); 112 if (intrupt) { /* if interrupted erase the input */ 113 pbuf[0] = '\0'; 114 (void) kill(getpid(), SIGINT); 115 } 116 return (pbuf); 117 } 118 119 /* ARGSUSED */ 120 static void 121 catch(int x) 122 { 123 intrupt = 1; 124 } 125