Apache and Perl - apache

Question

I am trying to get OpenDLP to work on my system. For those not familiar with this, only think of it as a perl website.
I mostly prepared everything, except that UI gives errors.
After some digging and debugging, I found out that my Perl scripts are running under directory '/'! And when pages try to read '../etc/db_admin' they won't find it and throw error.
My vhost config for this ui:
<VirtualHost opendlp.local:443>
ServerAdmin vahid.fazl2000#engineer.com
DocumentRoot "/home/vahid/Downloads/OpenDLP-0.5.1/OpenDLP/web/bin"
ServerName opendlp.local:443
ErrorLog "/var/log/httpd/opendlp-error_log"
CustomLog "/var/log/httpd/opendlp-access_log" common
Include conf/extra/httpd-opendlp.conf
<Directory "/home/vahid/Downloads/OpenDLP-0.5.1/OpenDLP/web/bin">
AddHandler perl-script .pl .html
PerlResponseHandler ModPerl::Registry
Options +ExecCGI
PerlOptions +ParseHeaders
AllowOverride All
Options All
Require method GET POST OPTIONS
</Directory>
</VirtualHost>
and here is httpd.opendlp.conf
Alias /OpenDLP/images/ /home/vahid/Downloads/OpenDLP-0.5.1/OpenDLP/web/bin/images
<Directory "/home/vahid/Downloads/OpenDLP-0.5.1/OpenDLP/web/bin/images/">
Options FollowSymLinks
AllowOverride None
order allow,deny
allow from all
#AuthType Basic
#AuthName "OpenDLP"
#AuthUserFile /etc/apache2/.htpasswd.dlp.user
#Require user dlpuser
</Directory>
ScriptAlias /OpenDLP/ "/home/vahid/Downloads/OpenDLP-0.5.1/OpenDLP/web/bin/"
ScriptAlias /cgi-bin/ "/home/vahid/Downloads/OpenDLP-0.5.1/OpenDLP/web/bin/"
<Directory "/home/vahid/Downloads/OpenDLP-0.5.1/OpenDLP/web/bin/results/">
Options FollowSymLinks
AllowOverride None
order allow,deny
allow from all
#AuthType Basic
#AuthName "OpenDLP"
#AuthUserFile /etc/apache2/.htpasswd.dlp.agent
#Require user ddt
</Directory>
<Directory "/home/vahid/Downloads/OpenDLP-0.5.1/OpenDLP/web/bin/">
Options FollowSymLinks
AllowOverride None
order allow,deny
allow from all
#AuthType Basic
#AuthName "OpenDLP"
#AuthUserFile /etc/apache2/.htpasswd.dlp.user
#Require user dlpuser
</Directory>
#Also add this stuff to the Apache config file:
# taken from http://hausheer.osola.com/docs/9
SSLEngine on
#SSLVerifyClient require
SSLCertificateFile /home/vahid/Downloads/OpenDLP-0.5.1/OpenDLP/server.crt
SSLCertificateKeyFile /home/vahid/Downloads/OpenDLP-0.5.1/OpenDLP/server.key
SSLCACertificateFile /home/vahid/Downloads/OpenDLP-0.5.1/OpenDLP/server.crt
I haven't tried Perl for web before, and I am not familiar with mod_perl and its options. I have googled for this, but it seems that I don't know where to look (except here, of course :-) )
BTW, I'm on Arch Linux x64 if it matters.
Thanks in advance
EDIT: Here is some more info on errors.
This is the error I get when I visit https://opendlp.local/profiles-manage.html
No such file or directory at /home/vahid/Downloads/OpenDLP-0.5.1/OpenDLP/web/bin/profiles-manage.html line 29.
And here is line 29 (and around it) of file:
use CGI qw/:standard/;
use DBI;
use Cwd qw();
my $version = get_version();
my $db_admin_file = "../etc/db_admin";
my( $db_username, $db_password ) = "";
open( DB, $db_admin_file ) or die $!; # LINE 29
my $db_line = <DB>;
close( DB );
chomp $db_line;
($db_username, $db_password) = split( ":", $db_line );
header();
print "<heading>Manage existing scan profiles</heading><normal><br><br>\n";
I have added use Cwd myself (googled, actually) and checked working directory, which is /.

Answer 1

Change DocumentRoot to
/home/vahid/Downloads/OpenDLP-0.5.1/OpenDLP/web
instead of
/home/vahid/Downloads/OpenDLP-0.5.1/OpenDLP/web/bin"
Then in your script:
my $db_admin_file = "etc/db_admin";
You have "cannot find file" error because your code runs on a virtual host where the directory you set as Document Root is regarded as root directory (/). You cannot "go behind" a root directory,