2bc895e7 |
1 | (* HCoop Domtool (http://hcoop.sourceforge.net/) |
2 | * Copyright (c) 2006, Adam Chlipala |
3 | * |
4 | * This program is free software; you can redistribute it and/or |
5 | * modify it under the terms of the GNU General Public License |
6 | * as published by the Free Software Foundation; either version 2 |
7 | * of the License, or (at your option) any later version. |
8 | * |
9 | * This program is distributed in the hope that it will be useful, |
10 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
11 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
12 | * GNU General Public License for more details. |
13 | * |
14 | * You should have received a copy of the GNU General Public License |
15 | * along with this program; if not, write to the Free Software |
16 | * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. |
17 | *) |
18 | |
19 | (* Code for receiving and executing configuration files *) |
20 | |
21 | structure Client :> CLIENT = struct |
22 | |
23 | datatype passwd_result = |
24 | Passwd of string |
25 | | Aborted |
26 | | Error |
27 | |
28 | fun getpass () = |
29 | let |
30 | val tty = Posix.FileSys.stdin |
78381e46 |
31 | val termios = Compat.getattr tty |
2bc895e7 |
32 | val fields = Posix.TTY.fieldsOf termios |
33 | |
34 | val termios' = Posix.TTY.termios {iflag = #iflag fields, |
35 | oflag = #oflag fields, |
36 | cflag = #cflag fields, |
37 | lflag = Posix.TTY.L.flags [Posix.TTY.L.clear (Posix.TTY.L.echo, #lflag fields), |
38 | Posix.TTY.L.echonl, |
39 | Posix.TTY.L.icanon], |
40 | cc = #cc fields, |
41 | ispeed = #ispeed fields, |
42 | ospeed = #ospeed fields} |
43 | |
78381e46 |
44 | fun reset () = Compat.setattr (tty, Posix.TTY.TC.sanow, termios) |
2bc895e7 |
45 | in |
46 | print " Password: "; |
47 | TextIO.flushOut TextIO.stdOut; |
78381e46 |
48 | Compat.setattr (tty, Posix.TTY.TC.sanow, termios'); |
2bc895e7 |
49 | case TextIO.inputLine TextIO.stdIn of |
50 | NONE => (reset (); |
51 | Aborted) |
52 | | SOME pass => |
53 | (print "Confirm password: "; |
54 | TextIO.flushOut TextIO.stdOut; |
55 | case TextIO.inputLine TextIO.stdIn of |
56 | NONE => (reset (); |
57 | Aborted) |
58 | | SOME pass' => |
59 | (reset (); |
60 | if pass = pass' then |
61 | Passwd (String.substring (pass, 0, size pass - 1)) |
62 | else |
63 | (print "Passwords don't match!\n"; |
64 | Error))) |
65 | end |
66 | |
67 | end |