I am not a regular Perl user so I cut and paste to get what I need done and uploading a file is the most advanced thing I have tried to do. There is already a web page on my site that uploads files so I have put together what I need and do not understand why it doesn't work. Another 5 hours of banging my head won't help any more than the first 5 hours. Below is the essentials of what I am doing. The file upload.cgi puts out the form that calls upload_proc.cgi. upload_proc.cgi includes a package util.pm containing a subroutine get_file to do the actual upload. I don't touch util.pm and it's subroutine get_file is used by other programs (the ones I cut and pasted from). I have two identical files one called filename and the other called filename.csv. I select the file with no extension, click the Upload button, and get an error from the get_file subroutine - CGI nodata(C:\temp\filename). 
#this is a stripped down version of the code
#no colors, no fonts, no extra input buttons

#---------------------------------------
#this is part of <upload.cgi> which outputs the
#the form and makes the call to upload_proc.cgi
#when the Upload button is clicked
#---------------------------------------
<form action="upload_proc.cgi" method="POST" enctype="multipart/form-d
+ata">
<center>
<table border = 5 cellpadding="5">
    <tr><th>Data Upload</th></tr>
    <tr><td><input type=file name=file_data accept=\"*\"></td></tr>
    <tr><td><input type=submit name=submit value="Upload">&nbsp;&nbsp;
+==&gt;&gt;</td></tr>
</table>
</center>
</form>
#---------------------------------------
#end of partial upload.cgi
#---------------------------------------


#---------------------------------------
#this is the stripped down <upload_proc.cgi>
#---------------------------------------
#!/usr/bin/perl
use utf8;
use encoding "utf-8";
use CGI;
use Bos::util qw($dbh);
use Text::CSV;
use strict;

Bos::util::db_connect();

my $user = Bos::util::authenticate("COOKIE","COOKIE");
Bos::util::auth_error($user);
if ($user->{'Type'} ne "B") {
    Bos::util::user_error("<center>Access denied.<br>Your account is n
+ot authorized for this function.</center>");
}

my $query;  
my $sth;  
my $myrow;  
my $cgi = Bos::util::cgi_query();

if( $cgi->param('submit') eq "Upload" ) {
    
    Bos::util::send_header("New Data Results", ""); 
    chdir( "/ccshome/www/customer_data_upload" ) or die;  #permissions
+ are 1777 on this folder

    my $new_file_data = upload_file($cgi->param('file_data'));
}

Bos::util::send_footer;

#---------------------------------------
#this is the <sub upload_file> that is in upload_proc.cgi
#---------------------------------------
sub upload_file {
  my $filename = shift;
  
  return   Bos::util::get_file($filename);
}

#---------------------------------------
#end of upload_proc.cgi
#---------------------------------------


#---------------------------------------
#this is the <sub Bos::util::get_file>
#extracted from the Bos::util.pm
#used by upload_proc.cgi
#---------------------------------------
sub get_file {
    my $filename = shift;
    my $query = cgi_query();

    return 0 unless defined $filename;
    my $fh = $query->upload( $filename );
    if( $fh ) {
        rename("${filename}.csv", "${filename}.old.csv");
        # open for writing
        open(DATA,">${filename}.csv") or die "Can't create ${filename}
+.csv ($!)\n";
        while( <$fh> ) {
            print DATA;        # write the file out
        }
        close(DATA);
        return 1;        # successful return
    # there must be a CGI error    
    } else {
        my ($errstr) = $query->cgi_error; 
        if ($errstr) {
            print "CGI error($filename): $errstr<br>\n";
        } else {
            print "CGI nodata($filename)<br>\n";
        }
        return 0;
    }
}

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In reply to Uploading a file by rightfield

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