diff options
author | Damien Miller <djm@mindrot.org> | 2001-06-25 18:09:16 +1000 |
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committer | Damien Miller <djm@mindrot.org> | 2001-06-25 18:09:16 +1000 |
commit | c8a3868ed0a9c8291c36e79180e18342acd4ed71 (patch) | |
tree | a024fd99a20726e12852e34dabaa5a4735202a80 /openbsd-compat/readpassphrase.c | |
parent | 2d5ac08f13a8e1f52f00c8ad67f9f03736371cc2 (diff) |
- (djm) Bring in readpassphrase() from OpenBSD libc. Compiles OK on Linux and
Solaris
Diffstat (limited to 'openbsd-compat/readpassphrase.c')
-rw-r--r-- | openbsd-compat/readpassphrase.c | 154 |
1 files changed, 154 insertions, 0 deletions
diff --git a/openbsd-compat/readpassphrase.c b/openbsd-compat/readpassphrase.c new file mode 100644 index 000000000..308e7cc5f --- /dev/null +++ b/openbsd-compat/readpassphrase.c | |||
@@ -0,0 +1,154 @@ | |||
1 | /* | ||
2 | * Copyright (c) 2000 Todd C. Miller <Todd.Miller@courtesan.com> | ||
3 | * All rights reserved. | ||
4 | * | ||
5 | * Redistribution and use in source and binary forms, with or without | ||
6 | * modification, are permitted provided that the following conditions | ||
7 | * are met: | ||
8 | * 1. Redistributions of source code must retain the above copyright | ||
9 | * notice, this list of conditions and the following disclaimer. | ||
10 | * 2. Redistributions in binary form must reproduce the above copyright | ||
11 | * notice, this list of conditions and the following disclaimer in the | ||
12 | * documentation and/or other materials provided with the distribution. | ||
13 | * 3. The name of the author may not be used to endorse or promote products | ||
14 | * derived from this software without specific prior written permission. | ||
15 | * | ||
16 | * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, | ||
17 | * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY | ||
18 | * AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL | ||
19 | * THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, | ||
20 | * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, | ||
21 | * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; | ||
22 | * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, | ||
23 | * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR | ||
24 | * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF | ||
25 | * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. | ||
26 | */ | ||
27 | |||
28 | #if defined(LIBC_SCCS) && !defined(lint) | ||
29 | static char rcsid[] = "$OpenBSD: readpassphrase.c,v 1.4 2001/06/18 17:41:39 millert Exp $"; | ||
30 | #endif /* LIBC_SCCS and not lint */ | ||
31 | |||
32 | #include "includes.h" | ||
33 | |||
34 | #ifndef HAVE_READPASSPHRASE | ||
35 | |||
36 | #include <termios.h> | ||
37 | #include <readpassphrase.h> | ||
38 | |||
39 | #ifdef TCSASOFT | ||
40 | # define _T_FLUSH (TCSAFLUSH|TCSASOFT) | ||
41 | #else | ||
42 | # define _T_FLUSH (TCSAFLUSH) | ||
43 | #endif | ||
44 | |||
45 | char * | ||
46 | readpassphrase(prompt, buf, bufsiz, flags) | ||
47 | const char *prompt; | ||
48 | char *buf; | ||
49 | size_t bufsiz; | ||
50 | int flags; | ||
51 | { | ||
52 | struct termios term; | ||
53 | char ch, *p, *end; | ||
54 | u_char status; | ||
55 | int echo, input, output; | ||
56 | sigset_t oset, nset; | ||
57 | |||
58 | /* I suppose we could alloc on demand in this case (XXX). */ | ||
59 | if (bufsiz == 0) { | ||
60 | errno = EINVAL; | ||
61 | return(NULL); | ||
62 | } | ||
63 | |||
64 | /* | ||
65 | * Read and write to /dev/tty if available. If not, read from | ||
66 | * stdin and write to stderr unless a tty is required. | ||
67 | */ | ||
68 | if ((input = output = open(_PATH_TTY, O_RDWR)) == -1) { | ||
69 | if (flags & RPP_REQUIRE_TTY) { | ||
70 | errno = ENOTTY; | ||
71 | return(NULL); | ||
72 | } | ||
73 | input = STDIN_FILENO; | ||
74 | output = STDERR_FILENO; | ||
75 | } | ||
76 | |||
77 | /* | ||
78 | * We block SIGINT and SIGTSTP so the terminal is not left | ||
79 | * in an inconsistent state (ie: no echo). It would probably | ||
80 | * be better to simply catch these though. | ||
81 | */ | ||
82 | sigemptyset(&nset); | ||
83 | sigaddset(&nset, SIGINT); | ||
84 | sigaddset(&nset, SIGTSTP); | ||
85 | (void)sigprocmask(SIG_BLOCK, &nset, &oset); | ||
86 | |||
87 | /* Turn off echo if possible. */ | ||
88 | echo = 0; | ||
89 | status = _POSIX_VDISABLE; | ||
90 | if (tcgetattr(input, &term) == 0) { | ||
91 | if (!(flags & RPP_ECHO_ON) && (term.c_lflag & ECHO)) { | ||
92 | echo = 1; | ||
93 | term.c_lflag &= ~ECHO; | ||
94 | } | ||
95 | #ifdef VSTATUS | ||
96 | if (term.c_cc[VSTATUS] != _POSIX_VDISABLE) { | ||
97 | status = term.c_cc[VSTATUS]; | ||
98 | term.c_cc[VSTATUS] = _POSIX_VDISABLE; | ||
99 | } | ||
100 | #endif | ||
101 | (void)tcsetattr(input, _T_FLUSH, &term); | ||
102 | } | ||
103 | if (!(flags & RPP_ECHO_ON)) { | ||
104 | if (tcgetattr(input, &term) == 0 && (term.c_lflag & ECHO)) { | ||
105 | echo = 1; | ||
106 | term.c_lflag &= ~ECHO; | ||
107 | (void)tcsetattr(input, _T_FLUSH, &term); | ||
108 | } | ||
109 | } | ||
110 | |||
111 | (void)write(output, prompt, strlen(prompt)); | ||
112 | end = buf + bufsiz - 1; | ||
113 | for (p = buf; read(input, &ch, 1) == 1 && ch != '\n' && ch != '\r';) { | ||
114 | if (p < end) { | ||
115 | if ((flags & RPP_SEVENBIT)) | ||
116 | ch = ch &= 0x7f; | ||
117 | if (isalpha(ch)) { | ||
118 | if ((flags & RPP_FORCELOWER)) | ||
119 | ch = tolower(ch); | ||
120 | if ((flags & RPP_FORCEUPPER)) | ||
121 | ch = toupper(ch); | ||
122 | } | ||
123 | *p++ = ch; | ||
124 | } | ||
125 | } | ||
126 | *p = '\0'; | ||
127 | if (echo || status != _POSIX_VDISABLE) { | ||
128 | if (echo) { | ||
129 | (void)write(output, "\n", 1); | ||
130 | term.c_lflag |= ECHO; | ||
131 | } | ||
132 | #ifdef VSTATUS | ||
133 | if (status != _POSIX_VDISABLE) | ||
134 | term.c_cc[VSTATUS] = status; | ||
135 | #endif | ||
136 | (void)tcsetattr(input, _T_FLUSH, &term); | ||
137 | } | ||
138 | (void)sigprocmask(SIG_SETMASK, &oset, NULL); | ||
139 | if (input != STDIN_FILENO) | ||
140 | (void)close(input); | ||
141 | return(buf); | ||
142 | } | ||
143 | #endif /* HAVE_READPASSPHRASE */ | ||
144 | |||
145 | #if 0 | ||
146 | char * | ||
147 | getpass(prompt) | ||
148 | const char *prompt; | ||
149 | { | ||
150 | static char buf[_PASSWORD_LEN + 1]; | ||
151 | |||
152 | return(readpassphrase(prompt, buf, sizeof(buf), RPP_ECHO_OFF)); | ||
153 | } | ||
154 | #endif | ||