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    1: # The LearningOnline Network
    2: # Convert and save a problem from Daxe.
    3: #
    4: # $Id: daxesave.pm,v 1.2 2015/12/10 16:26:43 damieng Exp $
    5: #
    6: # Copyright Michigan State University Board of Trustees
    7: #
    8: # This file is part of the LearningOnline Network with CAPA (LON-CAPA).
    9: #
   10: # LON-CAPA is free software; you can redistribute it and/or modify
   11: # it under the terms of the GNU General Public License as published by
   12: # the Free Software Foundation; either version 2 of the License, or
   13: # (at your option) any later version.
   14: #
   15: # LON-CAPA is distributed in the hope that it will be useful,
   16: # but WITHOUT ANY WARRANTY; without even the implied warranty of
   17: # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
   18: # GNU General Public License for more details.
   19: #
   20: # You should have received a copy of the GNU General Public License
   21: # along with LON-CAPA; if not, write to the Free Software
   22: # Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
   23: #
   24: # /home/httpd/html/adm/gpl.txt
   25: #
   26: # http://www.lon-capa.org/
   27: #
   28: ###
   29: 
   30: package Apache::daxesave;
   31: 
   32: use Apache::Constants;
   33: use Apache::lonnet;
   34: use Try::Tiny;
   35: use File::Copy;
   36: 
   37: use Apache::lonacc;
   38: use Apache::loncommon;
   39: use Apache::xml_to_loncapa;
   40: 
   41: sub handler {
   42:     my $request = shift;
   43:     
   44:     $request->content_type('text/plain');
   45:     
   46:     my $path = $env{'form.path'}; # should be in the form "/daxeopen/priv/..."
   47:     $path =~ s/^\/daxeopen//;
   48:     
   49:     my $allowed;
   50:     my ($ownername,$ownerdom,$ownerhome) = 
   51:         &Apache::lonnet::constructaccess($path, 'setpriv');
   52:     if (($ownername ne '') && ($ownerdom ne '') && ($ownerhome ne '')) {
   53:         unless ($ownerhome eq 'no_host') {
   54:             my @hosts = &Apache::lonnet::current_machine_ids();
   55:             if (grep(/^\Q$ownerhome\E$/,@hosts)) {
   56:                 $allowed = 1;
   57:             }
   58:         }
   59:     }
   60:     unless ($allowed) {
   61:         $request->log_reason("Unauthorized path: $path", $path);
   62:         $request->print("error\nUnauthorized path: $path");
   63:         $request->status(403);
   64:         return OK;
   65:     }
   66: 
   67:     my $newpath = &Apache::lonnet::filelocation('', $path);
   68: 
   69:     my $contents = $env{'form.file'};
   70:     
   71:     try {
   72:         $contents = &Apache::xml_to_loncapa::convert_file($contents);
   73:     } catch {
   74:         $request->print("error\nconvert failed for $path: $_");
   75:         return OK;
   76:     };
   77:     
   78:     my $filebak = $newpath.".bak";
   79:     if (-e $newpath) {
   80:         copy($newpath, $filebak); # errors ignored
   81:     }
   82:     open my $out, '>:encoding(UTF-8)', $newpath;
   83:     print $out $contents;
   84:     close $out;
   85:     
   86:     $request->print("ok\n");
   87:     return OK;
   88: }
   89: 
   90: 1;
   91: __END__