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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 | ||
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28 | fun hastty () = |
29 | Posix.ProcEnv.isatty Posix.FileSys.stdin | |
30 | ||
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31 | fun getpass () = |
32 | let | |
33 | val tty = Posix.FileSys.stdin | |
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34 | val termios = SOME (Posix.TTY.TC.getattr tty) |
35 | handle OS.SysErr (reason, SOME syserr) => | |
46a6e609 | 36 | if syserr = Posix.Error.notty orelse syserr = Posix.Error.inval then |
9b0be715 CE |
37 | (print "Warning: no terminal found, not hiding password\n"; |
38 | TextIO.flushOut TextIO.stdOut; | |
39 | NONE) | |
40 | else raise OS.SysErr (reason, SOME syserr) | |
41 | val fields = case termios of SOME termios => SOME (Posix.TTY.fieldsOf termios) | |
42 | | NONE => NONE | |
21d921a5 | 43 | |
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44 | val termios' = case fields of SOME fields => |
45 | SOME (Posix.TTY.termios {iflag = #iflag fields, | |
46 | oflag = #oflag fields, | |
47 | cflag = #cflag fields, | |
48 | lflag = Posix.TTY.L.flags [Posix.TTY.L.clear (Posix.TTY.L.echo, #lflag fields), | |
49 | Posix.TTY.L.echonl, | |
50 | Posix.TTY.L.icanon], | |
51 | cc = #cc fields, | |
52 | ispeed = #ispeed fields, | |
53 | ospeed = #ospeed fields}) | |
54 | | NONE => NONE | |
21d921a5 | 55 | |
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56 | fun reset () = case termios of SOME termios => Posix.TTY.TC.setattr (tty, Posix.TTY.TC.sanow, termios) |
57 | | NONE => () | |
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58 | in |
59 | print " Password: "; | |
60 | TextIO.flushOut TextIO.stdOut; | |
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61 | case termios' of SOME termios' => Posix.TTY.TC.setattr (tty, Posix.TTY.TC.sanow, termios') |
62 | | NONE => (); | |
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63 | case TextIO.inputLine TextIO.stdIn of |
64 | NONE => (reset (); | |
65 | Aborted) | |
66 | | SOME pass => | |
67 | (print "Confirm password: "; | |
68 | TextIO.flushOut TextIO.stdOut; | |
69 | case TextIO.inputLine TextIO.stdIn of | |
70 | NONE => (reset (); | |
71 | Aborted) | |
72 | | SOME pass' => | |
73 | (reset (); | |
74 | if pass = pass' then | |
75 | Passwd (String.substring (pass, 0, size pass - 1)) | |
76 | else | |
77 | (print "Passwords don't match!\n"; | |
78 | Error))) | |
79 | end | |
80 | ||
81 | end |