#!/usr/bin/perl

##
## mex2t -cgi -db file
##    junta pergunta (file)  à db 

use strict;
use utf8::all;
use CGI q(:all);
use IO::CaptureOutput qw/capture/;
use File::Path qw(make_path);

print header(-charset=>'utf-8');
print start_html(-title => 'MEX',
                   -style => { -src => '/styles2.css',
                               -type => 'text/css'
                             }
);


if(param()){
  $CGI::POST_MAX = 1024 * 5000;
  
  my $filename = param("mex"); 
  #my $passarola_dir = "/home/passarola/.passarola/upload";
  my $passarola_path = "#PASS_PATH";
  my $passarola_dir = "$passarola_path/.passarola";
  my $upload_dir = "$passarola_dir/upload";

  if (not -d $upload_dir) { make_path $upload_dir; }
  
  my $upload_filehandle = upload("mex");
  
  open ( UPLOADFILE, ">$upload_dir/$filename" ) or die "$!";
  while ( <$upload_filehandle> ) { print UPLOADFILE; } close UPLOADFILE;

  # protect system by only allowing select bins to be executed
  #$ENV{PATH} = "$passarola_path/bin";
  $ENV{HOME} = "$passarola_path";
  $ENV{PATH} = "/usr/local/bin:/usr/bin:/bin";

  chdir $passarola_dir;
  #print "Something is wrong with pass2tex!<br>\n", unless -x pass2tex;
  print "Something is wrong with pass2tex!<br>\n", unless `which pass-exer`;

  my($out, $err, $ret);
  capture sub{
    $ret = system("pass-exer -d -store $upload_dir/$filename");
  } => \$out, \$err;

  print "$ret\n";
  print "Errors:<br>$err<br><hr>";
  print "Output:<br>$out<br>";  

  #print "Ficheiro enviado com sucesso<br>"; 
  #print $x."<br>";
}
else{
  print start_form;
  print filefield(-name=>'mex');
  print submit, end_form;
}

print end_html;