Hi,
I have been studying with the O'Reilly book CGI Programming with Perl -
Chapter 5 page 99
Below is an example of a upload.cgi that utilizes CGI.pm
I am not able to get it to work correctly yet and I am trying to find out if
it is the directory I am trying to load the file to or a progammatical
error. The html is at:
http://www.vargasmedia.com/upload.htm
I have been using
http://www.vargasmedia.com/cgi-bin/env_var.cgi
to help me get the information I need to upload files using the correct
path.
Is that a good way to go about it and if so what Environment Variable should
I be looking at to return a path I can use...
DOCUMENT_ROOT
I have an empty folder on my server under www that is called uploads and
wanted to upload files there.
Here is the code from the Book CGI Programming with Perl - it is in Chapter
5 - page 99
-PS:btw- What is the CHMOD setting that I should be using with this CGI and
uploads directory?
Forgive me I'm new :)
Any help extremely appreciated.
Steve
#
#!/usr/bin/perl -wT
use strict;
use CGI;
use Fcntl qw( :DEFAULT :flock );
# use constant UPLOAD_DIR = /usr/local/bin;
use constant UPLOAD_DIR = /www/vargasmedia/uploads/;
use constant BUFFER_SIZE =16_384;
use constant MAX_FILE_SIZE = 100 * 1_048_576;
use constant MAX_DIR_SIZE = 100 * 1_048_576;
use constant MAX_OPEN_TRIES =100;
$CGI::DISABLE_UPLOADS= 0;
$CGI::POST_MAX = MAX_FILE_SIZE;
my $q = new CGI;
$q-cgi_error and error( $q, Error transferring file: . $q-cgi_error );
my $file = $q-param( file )|| error( $q, No file
recieved. );
my $filename = $q-param( filename )|| error( $q, No filename
entered. );
my $fh = $q-upload( $file );
my $buffer = ;
if ( dir_size( UPLOAD_DIR ) + $ENV{CONTENT_LENGTH} MAX_DIR_SIZE ) {
error( $q, Upload directory is full. );
}
# Convert odd ball characters to underscore
$filename =~ s/[^\w.-]/_/g;
if ( $filename =~ /^(\w[\w.-]*)/ ) {
$filename = $1;
}
else {
error( $q, Invalid file name; files must start with a letter or
number. );
}
# open output file, making sure the file name is unique
until ( sysopen OUTPUT, UPLOAD_DIR . $filename, O_CREAT | O_EXCL ) {
$filename =~ s/(\d*)(\.\w+)$/($1||0) + 1 . $2/e;
$1 = MAX_OPEN_TRIES and error( $q, Unable to save your file. );
}
# This is neccessary for non-Unix systems does nothing on UNIX
binmode $fh;
binmode OUTPUT;
# write contents to output file
while ( read($fh, $buffer, BUFFER_SIZE ) ) {
print OUTPUT $buffer;
}
close OUTPUT;
sub dir_size {
my $dir = shift;
my $dir_size = 0;
# loop through files and sume the sizes; doesn't decend down subdirs
opendir DIR, $dir or die Unable to open $dir: $!;
while ( readdir DIR ) {
$dir_size += -s $dir/$_;
}
return $dir_size;
}
sub error {
my( $q, $reason ) = @_;
print $q-header( text/html ),
$q-start_html( Error ),
$q-h1( Error ),
$q-p( Your upload was not processed because the following error,
occured: ),
$q-p( $q-i( $reason )),
$q-end_html;
exit;
}
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