Uploading Files

[Kiko]

Hi All, I'm working on a system that's supposed to take some information that a user enters and store it into a database. I have that part working. But this system should also allow the users to upload associated files with their entry. And this part i don't have working. I've never done this before and i don't even know where to start. If someone has done something similar or if you know how to go about this problem; Please Help. Thanks, Kiko

[gryphon]

Greetings Kiko. There are a few ways to do this. Here's my attempt to show the raw basics. (Please don't try this in an enterprise solution...)

#!/usr/bin/perl -w
use strict;
use CGI;
my $cgi = new CGI;
my $filename = $cgi->param("formuploadinputname");

my($bytesread,$buffer,$total);
open(OUTPUT, "> /var/home/me/somedirsomewhere/$filename");
binmode $filename;
binmode OUTPUT;

while ($bytesread = read($filename,$buffer,1024) ) {
    $total += $bytesread;
        if ($bytesread > 10000000) { # 10 meg filesize limit
            close(OUTPUT);
            unlink "/var/home/me/somedirsomewhere/$filename";
        }
    print OUTPUT $buffer;
}
close(OUTPUT);

A much better (much much better) example of how to do this sort of thing safely is Re: File Upload To Selected Directory written by Ovid. Give that node a deep read-through and you'll have a lot to play with.

-gryphon
code('Perl') || die;

[Kiko]

Hi, This is the part of my script that is supposed to upload upto 5 files. Everything else in my script works put the portion. I'm passing file1,file2,...file5 to this script. When i pass it file1 i get this error "Can't use an undefined value as a HASH reference at c:\phpdev3\scripts\mkrdb\SAVE_N~1.PL line 81" which happens to be the line where $format is. But when i pass it file2 or 3 or 4 or 5 i don't get the error and my script works but the file upload portion below.

UPLOAD_FILE:
{
    for my $file_num (1..5) {
        my $file = $grab_file->param("file$file_num") or next UPLOAD_F
+ILE;
        if ($file) {
            my $buffer;
            my $file_handle = $grab_file->upload($file);
          my $format = $grab_file->uploadInfo($file)->{'Content-Type'}
+;

          # This will create the new file
            sysopen OUTFILE, UPLOAD_DIR . $file, O_CREAT or die "Can't
+ open UPLOAD_DIR$file: $!";
            
            while ( read( $file_handle, $buffer, BUFFER_SIZE ) ) { 
                print OUTFILE $buffer; 
            }
            close (OUTFILE);

            # This will store the file name in the database
          push @statement,"INSERT INTO documents (record_id, document)
+ VALUES ('$record_id', '$file')";
        }
    }
}

Thanks for your help, Kiko

[thraxil]

look at the documentation for the CGI module. it has several clear examples of how to do this.

anders pearson