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
|
#!/usr/bin/perl
# Copyright 2014 Jan Pazdziora
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
use strict;
use warnings FATAL => 'all';
use CGI ();
my $LOGIN = '/login';
my $LOGOUT = '/logout';
my $AUTH_COOKIE = 'the-test-cookie';
my $q = new CGI;
my $cookie = $q->cookie($AUTH_COOKIE);
my ($user, $name);
if ($cookie and $cookie =~ /^ok:(.+)$/) {
$user = $1;
$name = CGI::escapeHTML($user);
}
my @nav;
print "Content-Type: text/html; charset=UTF-8\n";
print "Pragma: no-cache\n";
my $title = "Application";
my $body = "This is a test application; public view, not much to see.";
if (defined $user) {
$title .= " authenticated ($name)";
$body = "Test application; logged in as user $name."
. " There is much more content for authenticated users." x 10;
}
sub logout {
print "Set-Cookie: $AUTH_COOKIE=xx; path=$ENV{SCRIPT_NAME}\n";
print "Refresh: 3; URL=$ENV{SCRIPT_NAME}\n";
$title = "Logged out";
$body = 'Successfully logged out. You will be redirected to the '
. qq!<a href="$ENV{SCRIPT_NAME}">home page</a>!;
}
sub login {
if (defined $user) {
print "Refresh: 3; URL=$ENV{SCRIPT_NAME}\n";
$title = "Already logged in";
$body = "You are already logged in as user $name.\n";
return;
}
$title = "Log in to application";
my $login = $q->param('login');
my $password = $q->param('password');
my $error = '';
if (defined $login) {
my $re = qr/^[-a-zA-Z0-9_.]+$/;
if ($login eq '' or not $login =~ $re) {
$error = '<p>Login has to be nonempty, full characters</p>';
} elsif (not defined $password or not $password =~ $re) {
$error = '<p>Password has to be nonempty</p>';
} elsif ($password ne reverse($login)) {
$error = '<p>Password has to be reverse login</p>';
}
}
if (defined $login and $error eq '') {
print "Set-Cookie: $AUTH_COOKIE=ok:$login; path=$ENV{SCRIPT_NAME}\n";
print "Refresh: 3; URL=$ENV{SCRIPT_NAME}\n";
$title = 'Logged in as ' . CGI::escapeHTML($login);
$body = 'You will be redirected to the '
. qq!<a href="$ENV{SCRIPT_NAME}">home page</a>!;
return;
}
no warnings 'uninitialized';
$body = <<"EOS";
$error
<form method="POST">
<dl>
<dt>Login:</dt>
<dd><input type="text" name="login" value="@{[ CGI::escapeHTML($login) ]}" />
<dt>Password:</dt>
<dd><input type="password" name="password" />
<dt><input type="submit" name="go" value="Log in" /></dt>
</dl>
</form>
EOS
}
if (defined $ENV{PATH_INFO}) {
if ($ENV{PATH_INFO} eq $LOGIN) {
login();
push @nav, qq!<a href="$ENV{SCRIPT_NAME}">Back to application</a>!;
} elsif ($ENV{PATH_INFO} eq $LOGOUT) {
logout();
push @nav, qq!<a href="$ENV{SCRIPT_NAME}">Back to application</a>!;
}
}
if (not @nav) {
push @nav, (defined $user
? qq!<a href="$ENV{SCRIPT_NAME}$LOGOUT">Log out</a>!
: qq!<a href="$ENV{SCRIPT_NAME}$LOGIN">Log in</a>!);
}
print <<"EOS";
<html>
<head>
<title>$title</title>
</head>
<body>
<h1>$title</h1>
<p>$body</p>
<hr/>
<p>@nav</p>
<!--
<hr/>
<pre>@{[ join "\n", map CGI::escapeHTML("$_=$ENV{$_}"), sort keys %ENV ]}
</pre>
-->
</body>
</html>
EOS
|
