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- fix co-author check

    1: # The LearningOnline Network with CAPA
    2: # Souce Code handler
    3: #
    4: # $Id: lonsource.pm,v 1.19 2007/08/28 22:23:22 albertel 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;
   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, $author, $listname) = @_;
   54:     $filename = $filename;
   55:     &Apache::loncommon::content_type($r,'text/html');
   56:     my ($uname, $udom) = &Apache::loncacc::constructaccess('/~'.$author.'/',$r->dir_config('lonDefDomain'));
   57:     $r->send_http_header;
   58:     $r->print(&Apache::loncommon::start_page('Problem source code moving operation'));
   59:     $r->print("Please enter the directory that you would like the source code to go into, a default has also been 			provided <br />");
   60:     $r->print("Also note, the path is in reference to the root of your construction space, and new directories will be 			automatically created. <br /><br />");
   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="'.$listname.'" />
   64:               <input type="hidden" name="action" value="copy_stage" />
   65:               <input type="text" size="50" name="newpath" value="/shared_source/'.$author.'" />&nbsp;
   66:               <input type="submit" value="Copy" />
   67:               </form>');
   68:     return OK;
   69: }
   70: 
   71: 
   72: sub copy_stage {
   73:     my ($r, $filename, $listname, $newpath) = @_;
   74:     my $role;
   75:     my $domain;
   76:     my $author_name;
   77: #Figure out if we are author or co-author
   78: 
   79:     if ($env{'request.role'} =~ m{^ca\.}) {
   80:         ($role, $domain, $author_name) = split(/\//,$env{'request.role'});
   81:     } else {
   82:         $role = "au.";
   83:         $domain = $env{'user.domain'};
   84:         $author_name = $env{'user.name'};
   85:     }
   86: 
   87:     my $path_to_new_file = '/home/'.$author_name.'/public_html/'.$newpath.'/'.$listname;
   88: #Just checking again for access as we want to make sure that it is really ok now that we have the real path
   89: 
   90:     my ($uname,$udom)= &Apache::loncacc::constructaccess($path_to_new_file,$domain);
   91:     unless (($uname) && ($udom)) {
   92:         return HTTP_NOT_ACCEPTABLE;
   93:     }
   94:     &Apache::loncommon::content_type($r,'text/html');
   95:     $r->send_http_header;
   96:     $r->print(&Apache::loncommon::start_page('Copying Source'));
   97:     my $result = &Apache::loncfile::exists($uname, $udom, $path_to_new_file);
   98:     $r->print($result);
   99:     if(($result) && ($result =~ m|published|) ) {
  100:         &delete_copy_file($r, $author_name, $newpath, $filename, $path_to_new_file, '1');
  101:     } elsif(($result) && ($result =~ m|exists!|)) {
  102:         &confirm($r, $author_name, $newpath, $filename, $path_to_new_file);
  103:     } else {
  104:         &copy_file($r, $author_name, $newpath, $filename, $path_to_new_file);
  105:     }
  106: 
  107:     return OK;
  108: 
  109: }
  110: 
  111: sub confirm {
  112:     my ($r, $author_name, $newpath, $filename, $path_to_new_file) = @_;
  113:     $r->print("<b>Press delete to remove file and replace it with a copy of the source you are viewing</b><br /><br /	>");
  114:     $r->print('<form name="delete_confirm" action="/adm/source" target="_parent" method="post">
  115:               <input type="hidden" name="filename" value="'.$filename.'" />
  116:               <input type="hidden" name="path" value="'.$path_to_new_file.'" />
  117:               <input type="hidden" name="author" value="'.$author_name.'" />
  118:               <input type="hidden" name="newpath" value="'.$newpath.'" />
  119:               <input type="hidden" name="action" value="delete_confirm" />
  120: 
  121:               <input type="submit" value="Delete" />
  122:               </form>');
  123: }
  124: 
  125: sub delete_copy_file {
  126:     my ($r, $author_name, $newpath, $filename, $path_to_new_file, $type) = @_;
  127:     if($type eq '1') {
  128:         $r->print("<b>Cannot delete non-obsolete published file</b><br />Please
  129:               use the code view in previous window to use shared code<br /><br />");
  130:         $r->print('<input type="button" value="Close Window" name="close" onClick="window.close()" />');
  131:     } else {
  132:         if(-e $path_to_new_file) {
  133:             unless(unlink($path_to_new_file)) {
  134:                 $r->print('<font color="red">'.&mt('Error').': '.$!.'</font>');
  135:                 return 0;
  136:             }
  137:         } else {
  138:             $r->print('<p> '.&mt('No such file').'. </p></form>');
  139:             return 0;
  140:         }
  141:         &copy_file($r, $author_name, $newpath, $filename, $path_to_new_file);
  142:     }
  143: }
  144: 
  145: sub copy_file {
  146:     my ($r, $author_name, $newpath, $filename, $path_to_new_file) = @_;
  147:     $r->print("<b>Creating directories</b>");
  148:     my $path = '/home/'.$author_name.'/public_html/';
  149:     my @directories = split(/\//,$newpath);
  150:     foreach my $now_checking (@directories) {
  151:         if($now_checking ne '') {
  152:             $path = $path.'/'.$now_checking;
  153:             if(-e $path) {} #More moving along, isn't recursion fun'
  154: 
  155:             else {
  156:                 unless(mkdir($path, 02770)) {
  157:                     $r->print('<font color="red">'.&mt('Error').': '.$!.'</font>');
  158:                     return 0;
  159:                 }
  160:                 unless(chmod(02770, ($path))) {
  161:                     $r->print('<font color="red"> '.&mt('Error').': '.$!.'</font>');
  162:                     return 0;
  163:                 }
  164:             }
  165:         } else { } #Just move along
  166: 
  167:     }
  168:     $r->print("<br /><b>Copying File</b>");
  169:     my $problem_filename = $Apache::lonnet::perlvar{'lonDocRoot'}.$filename;
  170:     my $file_output = &includemeta(&Apache::lonnet::getfile($problem_filename),$filename);
  171:     my $fs=Apache::File->new(">$path_to_new_file");
  172:     if (defined($fs)) {
  173:         print $fs $file_output;
  174:     }
  175:     $r->print("<br /><br />");
  176:     $r->print('<input type="button" value="Close Window" name="close" onClick="window.close()">');
  177:     #Some 1.3'ish feature is to include the derivative feature, will go here..'
  178: }
  179: 
  180: sub print_item {
  181:     my ($r, $filename) = @_;
  182:     my $file_output = &includemeta(&Apache::lonnet::getfile($Apache::lonnet::perlvar{'lonDocRoot'}.$filename),$filename);
  183:     my $count=0;
  184:     my $maxlength=-1;
  185:     foreach (split ("\n", $file_output)) {
  186:         $count+=int(length($_)/79);
  187:         $count++;
  188:         if (length($_) > $maxlength) {
  189:             $maxlength = length($_);
  190:         }
  191:     }
  192:     my $rows = $count;
  193:     my $cols = $maxlength;
  194:     $r->print('<textarea rows="'.$rows.'" cols="'.$cols.'" name="editxmltext">'.
  195:               &HTML::Entities::encode($file_output,'<>&"').'</textarea>');
  196:     return OK;
  197: 
  198: }
  199: 
  200: sub includemeta {
  201:     my ($file_output,$orgfilename)=@_;
  202:     my $escfilename=&escape($orgfilename);
  203:     my $copytime=time;
  204:     if ($file_output=~/\<meta\s*name\=\"isbasedonres\"/i) {
  205: 	$file_output=~s/(\<meta\s*name\=\"isbasedonres\"\s*content\=\"[^\"]*)\"/$1\,\Q$escfilename\E\"/i;
  206:     } else {
  207: 	$file_output=~s/(\<(?:html|problem)[^\>]*\>)/$1\n\<meta name=\"isbasedonres\" content=\"\Q$escfilename\E\" \/\>/i;
  208:     }
  209:     if ($file_output=~/\<meta\s*name\=\"isbasedontime\"/i) {
  210: 	$file_output=~s/(\<meta\s*name\=\"isbasedontime\"\s*content\=\"[^\"]*)\"/$1\,\Q$copytime\E\"/i;
  211:     } else {
  212: 	$file_output=~s/(\<(?:html|problem)[^\>]*\>)/$1\n\<meta name=\"isbasedontime\" content=\"\Q$copytime\E\" \/\>/i;
  213:     }
  214:     return $file_output;
  215: }
  216: 
  217: sub handler {
  218:     my $r=shift;
  219:     &Apache::loncommon::get_unprocessed_cgi($ENV{'QUERY_STRING'},
  220:                                             ['filename','listname']);
  221:     my $filename = $env{'form.filename'};
  222:     my $listname = $env{'form.listname'};
  223:     my $source = &Apache::lonnet::metadata($filename,'sourceavail');
  224:     if ($source ne 'open') {
  225:         $env{'user.error.msg'}="$filename:cre:1:1:Source code not available";
  226:         return HTTP_NOT_ACCEPTABLE;
  227:     } 
  228:     unless ((&Apache::lonnet::allowed('bre',$filename)) &&
  229: 	    (&Apache::lonnet::allowed('cre','/'))) {
  230:         $env{'user.error.msg'}="$filename:bre:1:1:Access to resource denied";
  231:         return HTTP_NOT_ACCEPTABLE;
  232:     } 
  233:     if ($env{'form.action'} eq 'stage2') {
  234:         my $author = &Apache::lonnet::metadata($filename,'authorspace');
  235:         ($author) = split('@',$author); #strip the domain of the author name
  236:         &stage_2($r, $env{'form.filename'}, $author, $listname);
  237:     } elsif($env{'form.action'} eq 'copy_stage') {
  238:         &copy_stage($r, $filename,$env{'form.listname'},$env{'form.newpath'});
  239:     } elsif($env{'form.action'} eq 'delete_confirm') {
  240:         &Apache::loncommon::content_type($r,'text/html');
  241:         $r->send_http_header;
  242:         &delete_copy_file($r, $env{'form.author'}, $env{'form.newpath'}, $env{'form.filename'}, $env{'form.path'}, '0');
  243:     } else {
  244:         &Apache::loncommon::content_type($r,'text/html');
  245:         $r->send_http_header;
  246:         $r->print('<form name="copy" action="/adm/source" target="_parent" method="post">
  247:                   <input type="button" value="Close Window" name="close" onClick="window.close()" />
  248:                   <input type="hidden" name="filename" value="'.$filename.'" />
  249:                   <input type="hidden" name="listname" value="'.$listname.'" />
  250:                   <input type="hidden" name="action" value="stage2" />
  251:                   <input type="submit" value="Copy to CSTR" />
  252:                   </form>');
  253:         $r->print('<hr />');
  254:         &print_item($r, $env{'form.filename'});
  255:     }
  256:     return OK;
  257: }
  258: 
  259: 1;
  260: 
  261: