File Upload Size Check

coolsaurabh has asked for the wisdom of the Perl Monks concerning the following question:

Hello all, I am facing strange issue in cgi script. Requirement is to upload the file and to print log message in case file size is more than 5 MB. Script is throwing error in case file size is bigger than 5 MB. However it is working fine case if the file size is less than 5 MB. Any suggestions.Pls advice.

#!/usr/bin/perl
use CGI qw(:standard);
use CGI::Carp qw( fatalsToBrowser );
use File::Basename;

use Net::OpenSSH;
use Net::SSH::Expect;
use Data::Dumper;
use Exporter qw(import);
our @EXPORT = qw(copyToTarget);


sub print_page()
{
        print ("Content-type: text/html\n\n");
        print <<__HTML__;
        <form name=f1 style="margin:20px 0" action="Maintenance_Framew
+ork.cgi" method="post" enctype="multipart/form-data">
        <p>
        <h3 align='center'> Maintenance File Upload </h3>
        <br>
        <p style="margin-left:16.5em;font-size:20px">Customer:<select 
+name="Customer" >
                <option value="Telenor_PK">Telenor_PK</option>
                <option value="Vodacom_TZ">Vodacom_TZ</option>
                </select>
        &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&n
+bsp;&nbsp;&nbsp;&nbsp;
        Technology : <select name="Techno" >
                        <option value="Core">Core</option>
                        <option value="RAN">RAN</option>
                        </select>
                        </p>
                <br>
        <p>File to Upload: <input type="file" name="filecsv" /></p>
        <p><input type="submit" name="Submit" value="Upload"></p>&nbsp
+&nbsp&nbsp
        </body>
        </html>
        </form>
__HTML__
}



sub main()
{
        $CGI::POST_MAX = 1024 *1024 ;
        my $safe_filename_characters = "a-zA-Z0-9_.-";
        my $upload_dir = "/opt/IBM/Maintenance/tmp";
        my $query = new CGI;

        print_page();


        my $filename = $query->param("filecsv");
        my $ctext = $query->param("Customer");
         my $ttechno = $query->param("Techno");
        my $content_length = $ENV{'CONTENT_LENGTH'};
        if ( !$filename )
        {
                print<<END_HTML2;
                <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//E
+N" "DTD/xhtml1-strict.dtd">
                <html xmlns="http://www.w3.org/1999/xhtml" xml:lang="e
+n" lang="en">
                <head>
                <meta http-equiv="Content-Type" content="text/html; ch
+arset=utf-8" />
                <title>Thanks!</title>
                <style type="text/css">
                img {border: none;}
                </style>
                </head>
                <body>
                <p>File is too big for upload! $content_length</p>
                </body>
                </html>
END_HTML2
                exit;
        }
        else
        {
                 print<<END_HTML3;
                <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//E
+N" "DTD/xhtml1-strict.dtd">
                <html xmlns="http://www.w3.org/1999/xhtml" xml:lang="e
+n" lang="en">
                <head>
                <meta http-equiv="Content-Type" content="text/html; ch
+arset=utf-8" />
                <title>Thanks!</title>
                <style type="text/css">
                img {border: none;}
                </style>
                </head>
                <body>
                <p>File is in relevant size to upload! $content_length
+</p>
                </body>
                </html>
END_HTML3
        }
}
[download]

Comment on File Upload Size Check Download Code

Replies are listed 'Best First'.
Re: File Upload Size Check by marto (Cardinal) on Aug 05, 2019 at 12:11 UTC
`$CGI::POST_MAX = 1024 1024 ;` [download] For a 5MB limit should be: `$CGI::POST_MAX = 1024 1024 * 5;` [download] CGI/$CGI::POST_MAX.	[reply] [d/l] [select]
Re^2: File Upload Size Check by coolsaurabh (Acolyte) on Aug 05, 2019 at 12:29 UTC
Yes it should be what you suggested. However when i am trying to upload the file greater than 5MB size,it is throwing some error.	[reply]
Re^3: File Upload Size Check by haukex (Archbishop) on Aug 05, 2019 at 12:51 UTC
it is throwing some error What error exactly? I know what I mean. Why don't you?	[reply]
Re^4: File Upload Size Check by coolsaurabh (Acolyte) on Aug 06, 2019 at 03:59 UTC
Re^5: File Upload Size Check by marto (Cardinal) on Aug 06, 2019 at 06:11 UTC
Re^5: File Upload Size Check by haukex (Archbishop) on Aug 06, 2019 at 08:53 UTC
Re^3: File Upload Size Check by marto (Cardinal) on Aug 05, 2019 at 12:33 UTC
Your code posted has a limit of 1MB. If you want a 5MB limit set it to what I showed you, if you want to upload something bigger, change the multiplier. Also ensure your web server isn't configured to limit file uploads.	[reply]