I am making my own small uploading website, I want uploading progress bar in it.
Since there is no php code for it (I donno). I got some CGI scripts but dont understand the
CGI script please can anyone suggest me something as I am using freehosting.
I have got w2box.4.1 which is a bit complex to understand.....
I want to know how the CGI file tracks the upload progress.... or there is some other way....
PHP Upload progress bar.... help needed
Moderator: General Moderators
Re: PHP Upload progress bar.... help needed
Check in the tutorial section on this forum.
Re: PHP Upload progress bar.... help needed
i cannot load the APC as i am using a freehosting service....
I am using l4rge.com...
I am using l4rge.com...
Re: PHP Upload progress bar.... help needed
PHP can not access raw POST data (or at least very well), so without ACP, you need to use a different language (perl, J2EE, etc.)
Re: PHP Upload progress bar.... help needed
thankyou 'Eric'... can anyone help me with the CGI code i have got one....
i want to know what does this piece of code does and what output is given ????? 
Code: Select all
#############
# SETTINGS! #
#############
# set this to your tmp path, you can use this or a full path like the line afterward
$tmp_dir= "tmp";
#$tmp_dir= "/home/username/tmp";
#$tmp_dir= "~/tmp";
#$tmp_dir= "C:/wamp/tmp";
#############
# /SETTINGS #
#############
use CGI;
use Fcntl qw(:DEFAULT :flock);
use File::Temp qw/ tempfile tempdir /;
#use Carp;
$high_max_upload = 524288000; #it will be change by params
@qstring=split(/&/,$ENV{'QUERY_STRING'});
@p1 = split(/=/,$qstring[0]);
$sessionid = $p1[1];
$sessionid =~ s/[^a-zA-Z0-9]//g; # sanitized as suggested by Terrence Johnson.
@p1 = split(/=/,$qstring[1]);
$max_upload = $p1[1];
$max_upload =~ s/[^0-9]//g; # sanitized
if ($max_upload > $high_max_upload) {$max_upload = $high_max_upload;}
if (!$sessionid) {
print "Content-type: text/html\n\n";
if (-e $tmp_dir && -d $tmp_dir)
{
print "CGI Working\n";
} else
{
print "The tmp directory doesn't exist. Please correct upload.cgi!\n";
}
exit;
}
# don't change the next few lines unless you have a very good reason to.
$post_data_file = "$tmp_dir/$sessionid"."_postdata";
$monitor_file = "$tmp_dir/$sessionid"."_flength";
$error_file = "$tmp_dir/$sessionid"."_err";
$signal_file = "$tmp_dir/$sessionid"."_signal";
$qstring_file = "$tmp_dir/$sessionid"."_qstring";
#require("./header.cgi");
#carp "$post_data_file and $monitor_file";
$content_type = $ENV{'CONTENT_TYPE'};
$len = $ENV{'CONTENT_LENGTH'};
$bRead=0;
$|=1;
sub bye_bye {
$mes = shift;
$mes =~ s/'/\\'/g;
# Try to open error file to output message too
$err_ok = open (ERRFILE,">", $error_file);
if($err_ok) {
print ERRFILE $mes; #write message to file, so can be read from fileprogress.php
close (ERRFILE);
} else {
# can't write error file. output alert directly to client
print "Content-type: text/html\n\n";
print "<script>alert('".$mes."');parent.location = '?error';</script>\n";
}
exit;
}
# see if we are within the allowed limit.
if($len > $max_upload)
{
close (STDIN);
bye_bye("The maximum upload size has been exceeded");
}
#
# The thing to watch out for is file locking. Only
# one thread may open a file for writing at any given time.
#
if (-e "$post_data_file") {
unlink("$post_data_file");
}
if (-e "$monitor_file") {
unlink("$monitor_file");
}
sysopen(FH, $monitor_file, O_RDWR | O_CREAT)
or &bye_bye ("Can't open numfile: $!");
# autoflush FH
$ofh = select(FH); $| = 1; select ($ofh);
flock(FH, LOCK_EX)
or &bye_bye ("Can't write-lock numfile: $!");
seek(FH, 0, 0)
or &bye_bye ("Can't rewind numfile : $!");
print FH $len;
close(FH);
sleep(1);
open(TMP,">","$post_data_file") or &bye_bye ("Can't open temp file");
binmode TMP;
#
# read and store the raw post data on a temporary file so that we can
# pass it though to a CGI instance later on.
#
my $i=0;
$ofh = select(TMP); $| = 1; select ($ofh);
while (read (STDIN ,$LINE, 4096) && $bRead < $len )
{
$bRead += length $LINE;
#select(undef, undef, undef,0.35); # sleep for 0.35 of a second.
# Many thanx to Patrick Knoell who came up with the optimized value for
# the duration of the sleep
$i++;
print TMP $LINE;
}
close (TMP);
#
# We don't want to decode the post data ourselves. That's like
# reinventing the wheel. If we handle the post data with the perl
# CGI module that means the PHP script does not get access to the
# files, but there is a way around this.
#
# We can ask the CGI module to save the files, then we can pass
# these filenames to the PHP script. In other words instead of
# giving the raw post data (which contains the 'bodies' of the
# files), we just send a list of file names.
#
open(STDIN,"$post_data_file") or &bye_bye("Can't open temp file");
my $cg = new CGI();
my $qstring="";
my %vars = $cg->Vars;
my $j=0;
while(($key,$value) = each %vars)
{
$file_upload = $cg->param($key);
if(defined $value && $value ne '')
{
my $fh = $cg->upload($key);
if(defined $fh)
{
#carp $fh;
($tmp_fh, $tmp_filename) = tempfile(DIR => $tmp_dir);
binmode $tmp_fh;
while(<$fh>) {
print $tmp_fh $_;
}
close($tmp_fh);
chmod 0644, $tmp_filename;
$fsize =(-s $fh);
$fh =~ s/([^a-zA-Z0-9_\-.])/uc sprintf("%%%02x",ord($1))/eg;
$tmp_filename =~ s/([^a-zA-Z0-9_\-.])/uc sprintf("%%%02x",ord($1))/eg;
$qstring .= "file[name][$j]=$fh&file[size][$j]=$fsize&";
$qstring .= "file[tmp_name][$j]=$tmp_filename&";
$j++;
}
else
{
$value =~ s/([^a-zA-Z0-9_\-.])/uc sprintf("%%%02x",ord($1))/eg;
$qstring .= "$key=$value&" ;
}
}
}
open (QSTR,">", "$qstring_file") or &bye_bye ("Can't open output file");
print QSTR $qstring;
close (QSTR);
open (SIGNAL,">", $signal_file) or &bye_bye ("Can't open signal file");
print SIGNAL "\n";
close (SIGNAL);
print "Content-type: text/html\n\n";
print "<html><script>loc = parent.location.href.split('/');parent.location = loc.splice(0,loc.length-1).join('/') + '?sid=".$sessionid."';</script></html>";
END {
#clean up the mess on abortion
if (not -e $signal_file){
if (-e $post_data_file){ unlink($post_data_file); }
if (-e $monitor_file){ unlink($monitor_file); }
if (-e $qstring_file){ unlink($qstring_file); }
if (-e $tmp_filename){ unlink($tmp_filename); }
}
}