Oct
20
Posted on 20-10-2010
Filed Under (Informations générales) by Arun Bagul

Introduction –

Près de 1 an en arrière, je me suis battu beaucoup pour la mise en œuvre de session et des cookies dans Perl CGI application. Donc, la pensée de partager mon travail avec vous tous.
Je voulais le faire à ma façon …

L’Assomption, à savoir votre apache serveur Web est activé pour exécuter des scripts CGI

Step 1] Write Auth.pm Perl module –

Please simply copy following Auth.pm perl module for authentication using Session and Cookies…

[root@arun ~]# cat /var/application/module/Auth.pm

package Auth;

### Subroutine to authenticate user
sub  User
{
my ($ref_page) = (@_);
### Session information
my $sid = $ref_page->cookie(“APP_SID”) || undef;
my $session = CGI::Session->load(undef,$sid);
if ( $session->is_expired ) { print $ref_page->redirect(-location => ‘../arun.html’);}
elsif ( $session->is_empty) { print $ref_page->redirect(-location => ‘../arun.html’);}
else { print $ref_page->header();}
# don’t forget to create dir ‘/var/tmp’
# with proper ownership/permission
#$session = new CGI::Session(undef, $sid, {Directory=>’/var/tmp’});
#################################################
return($session->param(‘login_user’));
}

1;
[root@arun ~]#

Step 2] authe_me.pl –

authe_me.pl file is used to set cookies and verify username/password. You may use MySQL DB to store username and password.
In this case you have to this file…

[root@arun ~]# cat /var/application/www/cgi-bin/auth_me.pl
#!/usr/bin/perl

sub BEGIN
{
unshift (@INC, ‘/var/application/module/’);
}

use strict;
use warnings;
use CGI qw(:standard);
use CGI::Session;
use Auth; ## our module

### Header
########################
my $page = CGI->new();
##print $page->header();

##########
if ( $ENV{REQUEST_METHOD} eq “POST” )
{
my %form;
my $session_dir=”/var/tmp”;
my ($admin_user,$admin_password) = (“admin”,”arun123″);

foreach my $key (param()) { $form{$key} = param($key);}
##
if (($form{username}) && ($form{password}))
{

### Session Details ###
CGI::Session->name(“APP_SID”);
## Create new session
my $session = new CGI::Session(undef, undef, {Directory=>$session_dir});
## Set cookies
my $cookie = $page->cookie(-name=>$session->name(),-value=>$session->id(),-expires=>’+2h’,-path=>’/’);
## Store data in session variable and save it
$session->param(‘login_user’,$form{username}); # OR
##$session->param(-name=>’login_user’,-value=>$form{username});
$session->save_param($page, [“login_user”]);

## Session and Cookie expiration time is SAME.
$session->expire(“+2h”);
#### Session Details end ####

## if login successful redirect to main.pl else login page
if (($form{username} eq $admin_user) and ($form{password} eq $admin_password))
{ print $page->redirect(-location => ‘main.pl’,-cookie=>$cookie);}
else { print $page->redirect(-location => ‘../arun.html’); }
############################
} else { print $page->redirect(-location => ‘../arun.html’); }
}

[root@arun ~]#

Step 3] Create Login Page –

[root@arun ~]# cat /var/application/www/arun.html
<html>
<title>Arun Login Page</title>

<!– Form start –>
<table align=’center’ border=’1′>
<form method=”POST” action=”cgi-bin/auth_me.pl”>
<tr>
<td><label>Login</label></td>
<td><input name=”username” type=”text”></td>
</tr>
<tr>
<td><label>Password</label></td>
<td><input name=”password” type=”password”><br/></td>
</tr>
<tr>
<td><input value=”Submit” type=”submit”></td>
</tr>

</form>
</table>

</html>

[root@arun ~]#

Step 4] Create main page where Session and Cookie authentication verified – main.pl

[root@arun ~]# cat /var/application/www/cgi-bin/main.pl
#!/usr/bin/perl

sub BEGIN
{
unshift (@INC, ‘/var/application/module/’);
}

use strict;
use warnings;
use CGI qw(:standard);
use CGI::Session;
use Auth;

### Header
my $page = CGI->new();
## check authentication
my $login_name=Auth::User($page);
###
print $page->start_html( -title=>’Arun Main Page’);

print “<h3>This is Main Page</h3></br>”;
print “<br>Login Name – $login_name”;

#end
[root@arun ~]#

Step 5] Please access login page and try http://your_ipaddr/arun.html

Thank you,
Arun Bagul

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