File:  [LON-CAPA] / loncom / interface / lonsource.pm
Revision 1.32: download - view: text, annotated - select for diffs
Tue Feb 11 15:49:15 2014 UTC (10 years, 2 months ago) by bisitz
Branches: MAIN
CVS tags: version_2_11_0_RC3, version_2_11_0, HEAD
Internationalization: Added missing &mt() calls

    1: # The LearningOnline Network with CAPA
    2: # Source Code handler
    3: #
    4: # $Id: lonsource.pm,v 1.32 2014/02/11 15:49:15 bisitz 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: 
   31: package Apache::lonsource;
   32: 
   33: use strict;
   34: use Apache::lonnet;
   35: use Apache::loncommon();
   36: use Apache::lonhtmlcommon();
   37: use Apache::lonsequence();
   38: use Apache::Constants qw(:common :http);
   39: use Apache::lonmeta;
   40: use Apache::File;
   41: use Apache::lonlocal;
   42: use HTML::Entities;
   43: use LONCAPA qw(:DEFAULT :match);
   44: 
   45: sub make_link {
   46:     my ($filename, $listname) = @_;
   47:     my $sourcelink = "/adm/source?inhibitmenu=yes&filename=".$filename."&listname=".$listname;
   48: 
   49:     return $sourcelink;
   50: }
   51: 
   52: sub stage_2 {
   53:     my ($r, $filename, $listname) = @_;
   54:     my ($author)=($filename=~/\/res\/[^\/]+\/([^\/]+)\//);
   55:     $r->print(&Apache::loncommon::start_page('Copy Problem Source Code to Authoring Space')
   56:              .&mt('Please enter the directory that you would like the source code to go into.')
   57:              .'<p>'
   58:              .&mt('Note: the path is in reference to the root of your Authoring Space,'
   59:                  .' and new directories will be automatically created.')
   60:              .'</p>');
   61:     $r->print('<form name="copy" action="/adm/source" target="_parent" method="post">
   62:               <input type="hidden" name="filename" value="'.$filename.'" />
   63:               <input type="hidden" name="listname" value="'.$listname.'" />
   64:               <input type="hidden" name="action" value="copy_stage" />
   65:               <input type="text" size="50" name="newpath" value="/'.&mt('shared_source').'/'.$author.'" />&nbsp;
   66:               <input type="submit" value="'.&mt('Copy').'" />
   67:               </form>');
   68:     return OK;
   69: }
   70: 
   71: sub copy_author {
   72:     my $role;
   73:     my $domain;
   74:     my $author_name;
   75:     if ($env{'request.role'} =~ m{^ca\.}) {
   76:         ($role, $domain, $author_name) = split(/\//,$env{'request.role'});
   77:     } else {
   78:         $role = "au.";
   79:         $domain = $env{'user.domain'};
   80:         $author_name = $env{'user.name'};
   81:     }
   82:     return ($role,$author_name,$domain);
   83: }
   84: 
   85: 
   86: sub copy_stage {
   87:     my ($r, $filename, $listname, $newpath) = @_;
   88: 
   89: #Figure out if we are author or co-author
   90:     my ($role,$author_name,$domain)=&copy_author();
   91: 
   92: # Construct path to copy and filter out any possibly nasty stuff
   93:     my $path_to_new_file = $r->dir_config('lonDocRoot').
   94:                            "/priv/$domain/$author_name/$newpath/$listname";
   95:     $path_to_new_file=~s/\.\.//g;
   96:     $path_to_new_file=~s/\~//g;
   97:     $path_to_new_file=~s/\/+/\//g;
   98: 
   99: #Just checking again for access as we want to make sure that it is really ok now that we have the real path
  100: 
  101:     my ($uname,$udom)= &Apache::lonnet::constructaccess($path_to_new_file);
  102: 
  103:     if (!$uname || !$udom) {
  104: 	$r->print(&Apache::loncommon::start_page('Not Allowed'));
  105: 	$r->print(&mt('Not allowed to create file [_1]', $path_to_new_file));
  106: 	$r->print(&Apache::loncommon::end_page());
  107: 	return;
  108:     }
  109: 
  110:     #allowed
  111:     $r->print(&Apache::loncommon::start_page('Copying Source'));
  112:     my $result = &Apache::loncfile::exists($uname, $udom, $path_to_new_file);
  113:     $r->print($result);
  114:     if(($result) && ($result =~ m|published|) ) {
  115: 	&delete_copy_file($r, $newpath, $filename, $path_to_new_file, '1');
  116:     } elsif(($result) && ($result =~ m|exists!|)) {
  117: 	&confirm($r, $newpath, $filename, $path_to_new_file);
  118:     } else {
  119: 	&copy_file($r, $newpath, $filename, $path_to_new_file);
  120:     }
  121:     
  122:     $r->print(&Apache::loncommon::end_page());
  123: }
  124: 
  125: sub confirm {
  126:     my ($r, $newpath, $filename, $path_to_new_file) = @_;
  127:     $r->print('<b>'.&mt('Press delete to remove file and replace it with a copy of the source you are viewing.').'</b><br /><br />');
  128:     $r->print('<form name="delete_confirm" action="/adm/source" target="_parent" method="post">
  129:               <input type="hidden" name="filename" value="'.$filename.'" />
  130:               <input type="hidden" name="path" value="'.$path_to_new_file.'" />
  131:               <input type="hidden" name="newpath" value="'.$newpath.'" />
  132:               <input type="hidden" name="action" value="delete_confirm" />
  133: 
  134:               <input type="submit" value="Delete" />
  135:               </form>');
  136: }
  137: 
  138: sub delete_copy_file {
  139:     my ($r, $newpath, $filename, $path_to_new_file, $type) = @_;
  140:     if($type eq '1') {
  141:         $r->print('<p><span class="LC_warning">'
  142:                  .&mt('Cannot delete non-obsolete published file.')
  143:                  .'</span><br />'
  144:                  .&mt('Please use the code view in previous window to use shared code.')
  145:                  .'<br /><br />');
  146:         $r->print('<input type="button" value="'.&mt('Close Window').'" name="close"'
  147:                  .' onclick="window.close()" />'
  148:                  .'</p>');
  149:     } else {
  150:         if(-e $path_to_new_file) {
  151:             unless(unlink($path_to_new_file)) {
  152:                 $r->print('<p class="LC_error"">'.&mt('Error:').' '.$!.'</p>');
  153:                 return 0;
  154:             }
  155:         } else {
  156:             $r->print('<p class="LC_error">'.&mt('No such file').'</p></form>');
  157:             return 0;
  158:         }
  159:         &copy_file($r, $newpath, $filename, $path_to_new_file);
  160:     }
  161: }
  162: 
  163: sub copy_file {
  164:     my ($r, $newpath, $filename, $path_to_new_file) = @_;
  165:     $r->print('<b>'.&mt('Creating directories').'</b>');
  166: 
  167: #Figure out if we are author or co-author
  168:     my ($role,$author_name,$domain)=&copy_author();
  169: 
  170:     my $path = $r->dir_config('lonDocRoot')."/priv/$domain/$author_name/";
  171:     my @directories = split(/\//,$newpath);
  172: 
  173:     foreach my $now_checking (@directories) {
  174:         if($now_checking ne '') {
  175:             $path = $path.'/'.$now_checking;
  176:             if(-e $path) {} #More moving along, isn't recursion fun'
  177: 
  178:             else {
  179:                 unless(mkdir($path, 02770)) {
  180:                     $r->print('<p class="LC_error">'.&mt('Error:').' '.$!.'</p>');
  181:                     return 0;
  182:                 }
  183:                 unless(chmod(02770, ($path))) {
  184:                     $r->print('<p class="LC_error"> '.&mt('Error:').' '.$!.'</p>');
  185:                     return 0;
  186:                 }
  187:             }
  188:         } else { } #Just move along
  189: 
  190:     }
  191:     $r->print('<br /><b>'.&mt('Copying File').'</b>');
  192:     my $problem_filename = $Apache::lonnet::perlvar{'lonDocRoot'}.$filename;
  193:     my $file_output = &includemeta(&Apache::lonnet::getfile($problem_filename),$filename);
  194:     my $fs=Apache::File->new(">$path_to_new_file");
  195:     if (defined($fs)) {
  196:         print $fs $file_output;
  197:     }
  198:     $r->print("<br /><br />");
  199:     $r->print('<input type="button" value="'.&mt('Close Window').'" name="close" onclick="window.close()" />');
  200:     #Some 1.3'ish feature is to include the derivative feature, will go here..'
  201: }
  202: 
  203: sub print_item {
  204:     my ($r,$filename,$listname) = @_;
  205:     my $file_output = 
  206:         &includemeta(&Apache::lonnet::getfile($Apache::lonnet::perlvar{'lonDocRoot'}.$filename),
  207:                                               $filename);
  208:     $r->print(&Apache::loncommon::start_page('View Source Code',undef,
  209:                                              {'only_body' => 1}));
  210:     if ($file_output ne '') {
  211:         my $access_to_cstr;
  212:         my $lonhost = $r->dir_config('lonHostID');
  213:         if (&Apache::lonnet::is_library($lonhost)) {
  214:             my @possdoms = &Apache::lonnet::current_machine_domains();
  215:             foreach my $dom (@possdoms) {
  216:                 if ($env{"user.role.au./$dom/"}) {
  217:                     $access_to_cstr = 1;
  218:                     last;  
  219:                 }
  220:             }
  221:             unless ($access_to_cstr) {
  222:                 foreach my $key (keys(%env)) {
  223:                     if ($key =~ m{^\Quser.role.ca./\E($match_domain)/}) {
  224:                         my $adom = $1;
  225:                         if (grep(/^\Q$adom\E$/,@possdoms)) {
  226:                             $access_to_cstr = 1;
  227:                             last;
  228:                         }
  229:                     }
  230:                 }
  231:             }
  232:             if ($access_to_cstr) {
  233:                 $r->print('
  234:              <form name="copy" action="/adm/source" target="_parent" method="post">
  235:               <input type="button" value="'.&mt('Close Window').'" name="close" onclick="window.close();" />
  236:               <input type="hidden" name="filename" value="'.$filename.'" />
  237:               <input type="hidden" name="listname" value="'.$listname.'" />
  238:               <input type="hidden" name="action" value="stage2" />
  239:               <input type="submit" value="'.&mt('Copy to Authoring Space').'" />
  240:              </form><hr />
  241:                 ');
  242:             } else {
  243:                 $r->print('<p><span class="LC_info">'.
  244:                           &mt('Source code is displayed, but you can not copy to Authoring Space, as you do not have an author or co-author role on this server.').
  245:                           '</span></p><a href="javascript:window.close();">'.&mt('Close Window').
  246:                           '</a><br /><hr />'
  247:                          );
  248:             }
  249:         } else {
  250:             $r->print('<p><span class="LC_info">'.
  251:                       &mt('Source code is displayed, but you can not copy to Authoring Space on this server.').
  252:                           '</span></p><a href="javascript:window.close();">'.&mt('Close Window').
  253:                           '</a><br /><hr />'
  254:                      );
  255: 
  256:         }
  257:         my $count=0;
  258:         my $maxlength=-1;
  259:         foreach (split ("\n", $file_output)) {
  260:             $count+=int(length($_)/79);
  261:             $count++;
  262:             if (length($_) > $maxlength) {
  263:                 $maxlength = length($_);
  264:             }
  265:         }
  266:         my $rows = $count;
  267:         my $cols = $maxlength;
  268:         $r->print('<form name="showsrc" action="" method="post" onsubmit="return false">'."\n".
  269:                   '<textarea rows="'.$rows.'" cols="'.$cols.'" name="editxmltext">'.
  270:                   &HTML::Entities::encode($file_output,'<>&"').'</textarea></form>');
  271:     } else {
  272:         $r->print('<p class="LC_warning">'.
  273:                   &mt('Unable to retrieve file contents.').
  274:                   '</p><a href="javascript:window.close();">'.&mt('Close Window').'</a>'
  275:                  );
  276:     }
  277:     $r->print(&Apache::loncommon::end_page());
  278:     return;
  279: }
  280: 
  281: sub includemeta {
  282:     my ($file_output,$orgfilename)=@_;
  283:     my $escfilename=&escape($orgfilename);
  284:     my $copytime=time;
  285:     if ($file_output=~/\<meta\s*name\=\"isbasedonres\"/i) {
  286: 	$file_output=~s/(\<meta\s*name\=\"isbasedonres\"\s*content\=\"[^\"]*)\"/$1\,\Q$escfilename\E\"/i;
  287:     } else {
  288: 	$file_output=~s/(\<(?:html|problem)[^\>]*\>)/$1\n\<meta name=\"isbasedonres\" content=\"\Q$escfilename\E\" \/\>/i;
  289:     }
  290:     if ($file_output=~/\<meta\s*name\=\"isbasedontime\"/i) {
  291: 	$file_output=~s/(\<meta\s*name\=\"isbasedontime\"\s*content\=\"[^\"]*)\"/$1\,\Q$copytime\E\"/i;
  292:     } else {
  293: 	$file_output=~s/(\<(?:html|problem)[^\>]*\>)/$1\n\<meta name=\"isbasedontime\" content=\"\Q$copytime\E\" \/\>/i;
  294:     }
  295:     if ($file_output eq '-1') {
  296:         return;
  297:     } else {
  298:         return $file_output;
  299:     }
  300: }
  301: 
  302: sub handler {
  303:     my $r=shift;
  304:     &Apache::loncommon::get_unprocessed_cgi($ENV{'QUERY_STRING'},
  305:                                             ['filename','listname']);
  306:     my $filename = $env{'form.filename'};
  307:     my $listname = $env{'form.listname'};
  308:     my $source = &Apache::lonnet::metadata($filename,'sourceavail');
  309:     if ($source ne 'open') {
  310:         $env{'user.error.msg'}="$filename:cre:1:1:Source code not available";
  311:         return HTTP_NOT_ACCEPTABLE;
  312:     }
  313:     unless (&Apache::lonnet::allowed('bre',$filename)) {
  314:         $env{'user.error.msg'}="$filename:bre:1:1:Access to resource denied";
  315:         return HTTP_NOT_ACCEPTABLE;
  316:     }
  317:     unless (&Apache::lonnet::allowed('cre','/')) {
  318:         $env{'user.error.msg'}="$filename:cre:1:1:Access to source code denied";
  319:         return HTTP_NOT_ACCEPTABLE;
  320:     }
  321: 
  322:     &Apache::loncommon::content_type($r,'text/html');
  323:     $r->send_http_header;
  324: 
  325:     if ($env{'form.action'} eq 'stage2') {
  326:         &stage_2($r,$filename,$listname);
  327:     } elsif($env{'form.action'} eq 'copy_stage') {
  328:         &copy_stage($r,$filename,$listname,$env{'form.newpath'});
  329:     } elsif($env{'form.action'} eq 'delete_confirm') {
  330:         &delete_copy_file($r,$env{'form.newpath'},$filename, $env{'form.path'}, '0');
  331:     } else {
  332:         &print_item($r,$filename,$listname);
  333:     }
  334:     return OK;
  335: }
  336: 
  337: 1;
  338: 
  339: 

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