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#!/usr/bin/perl -wT
# Receive HTTP post request with a file upload, uncompress it if
# needed, and submit it as an email to the popcon collector.
# Handle three different submission methods
# - simple post message, where the complete body is the popcon report
# (used by popcon version 1.30).
# - mime-encoded upload with report in compressed form (used by
# popcon version 1.31 and newer).
# - mime-encoded upload with report in uncompressed form (used by
# ubuntu popcon).
use strict;
use CGI;
use Compress::Zlib;
my $email='';
my $directsave = 0; # Enable to store on disk instead of sending an email
my $basedir = "/var/lib/popcon";
my $bindir = "$basedir/bin";
print "Content-Type: text/plain\n\n";
print "Debian Popularity-Contest HTTP-POST submission URL\n";
print "Visit for more info.\n";
exit 0;
# Extract post data, handle both simple and multipart way
my @entry;
if (exists $ENV{CONTENT_TYPE} && $ENV{CONTENT_TYPE} =~ m%multipart/form-data%){
# New method, used in popularity-contest after 1.30
my $query = new CGI;
my $fh = $query->upload("popcondata");
if ($fh) {
my $filename = $query->param("popcondata");
my $type = $query->uploadInfo($filename)->{'Content-Type'};
if ("text/plain; charset=utf-8" ne $type &&
"application/octet-stream" ne $type) { # Used by ubuntu script
print "Only 'text/plain; charset=utf-8' and 'application/octet-stream' is supported (not $type)!";
} else {
my $encoding = $query->uploadInfo($filename)->{'Content-Encoding'};
if ("x-gzip" eq $encoding || "gzip" eq $encoding) {
# Uncompress
print "Compressed ($encoding) encoding detected.\n";
my $data;
# $data = join("", <$fh>);
my $len = (stat($fh))[7];
read $fh, $data, $len;
$data = Compress::Zlib::memGunzip($data);
@entry = ($data);
} else { # Pass throught
print "Identity encoding detected.\n";
@entry = <$fh>;
} else {
print $query->cgi_error;
} else {
# Old submit method, used in popularity-contest version 1.30
print "Old method detected.\n";
open GZIP, '/bin/gzip -dc|' or die "gzip";
close STDIN;
open STDIN, "<&GZIP";
@entry = <GZIP>;
my ($id) = $entry[0] =~ m/POPULARITY-CONTEST-0 .+ ID:(\S+) /;
if ($id) {
if ($directsave) {
open(POPCON, "|$bindir/") or die "Unable to pipe to";
print POPCON @entry;
close POPCON;
} else {
open POPCON, "|/usr/lib/sendmail -oi $email" or die "sendmail";
print POPCON <<"EOF";
To: $email
Subject: popularity-contest submission
print POPCON @entry;
close POPCON;
if ($id) {
print "Thanks for your submission to Debian Popularity-Contest!\n";
} else {
print "The submission to Debian Popularity-Contest failed!\n";
exit 0;