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
|
/*
* Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
*
* 1. Redistributions of source code must retain the above copyright notice, this
* list of conditions and the following disclaimer.
*
* 2. Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions and the following disclaimer in the documentation
* and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
* CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#include <AK/Vector.h>
#include <LibCore/Account.h>
#include <LibCore/ArgsParser.h>
#include <LibCore/GetPassword.h>
#include <stdio.h>
#include <string.h>
#include <unistd.h>
extern "C" int main(int, char**);
int main(int argc, char** argv)
{
if (!isatty(STDIN_FILENO)) {
warnln("{}: standard in is not a terminal", argv[0]);
return 1;
}
const char* user = nullptr;
Core::ArgsParser args_parser;
args_parser.add_positional_argument(user, "User to switch to (defaults to user with UID 0)", "user", Core::ArgsParser::Required::No);
args_parser.parse(argc, argv);
if (geteuid() != 0)
fprintf(stderr, "Not running as root :(\n");
auto account_or_error = (user) ? Core::Account::from_name(user) : Core::Account::from_uid(0);
if (account_or_error.is_error()) {
fprintf(stderr, "Core::Account::from_name: %s\n", account_or_error.error().characters());
return 1;
}
Core::Account account = account_or_error.value();
if (getuid() != 0 && account.has_password()) {
auto password = Core::get_password();
if (password.is_error()) {
fprintf(stderr, "%s\n", strerror(password.error()));
return 1;
}
if (!account.authenticate(password.value().characters())) {
fprintf(stderr, "Incorrect or disabled password.\n");
return 1;
}
}
if (!account.login()) {
perror("Core::Account::login");
return 1;
}
execl(account.shell().characters(), account.shell().characters(), nullptr);
perror("execl");
return 1;
}
|
