1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
extern crate rprompt;
#[cfg(unix)]
extern crate libc;
use std::io::Write;
use std::io::stdin;
use std::io::Error as IoError;
use std::io::ErrorKind as IoErrorKind;
fn zero_memory(s: &mut String) {
let mut vec = unsafe { s.as_mut_vec() };
for el in vec.iter_mut() {
*el = 0u8;
}
}
fn fixes_newline(mut password: String) -> std::io::Result<String> {
if password.chars().last() != Some('\n') {
return Err(IoError::new(
IoErrorKind::UnexpectedEof,
"unexpected end of file",
));
}
password.pop();
if password.chars().last() == Some('\r') {
password.pop();
}
Ok(password)
}
#[cfg(unix)]
mod unix {
use libc::{c_int, isatty, tcgetattr, tcsetattr, TCSANOW, ECHO, ECHONL, STDIN_FILENO};
fn io_result(ret: c_int) -> ::std::io::Result<()> {
match ret {
0 => Ok(()),
_ => Err(::std::io::Error::last_os_error()),
}
}
pub fn read_password() -> ::std::io::Result<String> {
let mut password = String::new();
let input_is_tty = unsafe { isatty(0) } == 1;
if input_is_tty {
let mut term = unsafe { ::std::mem::uninitialized() };
let mut term_orig = unsafe { ::std::mem::uninitialized() };
io_result(unsafe { tcgetattr(STDIN_FILENO, &mut term) })?;
io_result(unsafe { tcgetattr(STDIN_FILENO, &mut term_orig) })?;
term.c_lflag &= !ECHO;
term.c_lflag |= ECHONL;
io_result(unsafe { tcsetattr(STDIN_FILENO, TCSANOW, &term) })?;
match super::stdin().read_line(&mut password) {
Ok(_) => {}
Err(err) => {
io_result(unsafe { tcsetattr(STDIN_FILENO, TCSANOW, &term_orig) })?;
super::zero_memory(&mut password);
return Err(err);
}
};
match io_result(unsafe { tcsetattr(STDIN_FILENO, TCSANOW, &term_orig) }) {
Ok(_) => {}
Err(err) => {
super::zero_memory(&mut password);
return Err(err);
}
}
} else {
match super::stdin().read_line(&mut password) {
Ok(_) => {}
Err(err) => {
super::zero_memory(&mut password);
return Err(err);
}
}
}
super::fixes_newline(password)
}
}
#[cfg(windows)]
mod windows {
extern crate winapi;
extern crate kernel32;
pub fn read_password() -> ::std::io::Result<String> {
let mut password = String::new();
let handle = unsafe { kernel32::GetStdHandle(winapi::STD_INPUT_HANDLE) };
if handle == winapi::INVALID_HANDLE_VALUE {
return Err(::std::io::Error::last_os_error());
}
let mut mode = 0;
if unsafe { kernel32::GetConsoleMode(handle, &mut mode as winapi::LPDWORD) } == 0 {
return Err(::std::io::Error::last_os_error());
}
let new_mode_flags = winapi::ENABLE_LINE_INPUT | winapi::ENABLE_PROCESSED_INPUT;
if unsafe { kernel32::SetConsoleMode(handle, new_mode_flags) } == 0 {
return Err(::std::io::Error::last_os_error());
}
match super::stdin().read_line(&mut password) {
Ok(_) => {}
Err(err) => {
super::zero_memory(&mut password);
return Err(err);
}
};
if unsafe { kernel32::SetConsoleMode(handle, mode) } == 0 {
return Err(::std::io::Error::last_os_error());
}
println!("");
super::fixes_newline(password)
}
}
#[cfg(unix)]
pub use unix::read_password;
#[cfg(windows)]
pub use windows::read_password;
#[deprecated(since = "1.0.0", note = "use `rprompt` crate and `rprompt::read_reply` instead")]
pub fn read_response() -> std::io::Result<String> {
rprompt::read_reply()
}
#[deprecated(since = "1.0.0",
note = "use `rprompt` crate and `rprompt::prompt_reply_stdout` instead")]
pub fn prompt_response_stdout(prompt: &str) -> std::io::Result<String> {
rprompt::prompt_reply_stdout(prompt)
}
#[deprecated(since = "1.0.0",
note = "use `rprompt` crate and `rprompt::prompt_reply_stderr` instead")]
pub fn prompt_response_stderr(prompt: &str) -> std::io::Result<String> {
rprompt::prompt_reply_stderr(prompt)
}
pub fn prompt_password_stdout(prompt: &str) -> std::io::Result<String> {
let mut stdout = std::io::stdout();
write!(stdout, "{}", prompt)?;
stdout.flush()?;
read_password()
}
pub fn prompt_password_stderr(prompt: &str) -> std::io::Result<String> {
let mut stderr = std::io::stderr();
write!(stderr, "{}", prompt)?;
stderr.flush()?;
read_password()
}