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Diff for /loncom/homework/lonhomework.pm between versions 1.153 and 1.173

version 1.153, 2003/10/14 15:47:50 version 1.173, 2004/04/16 19:10:27
Line 24 Line 24
 # /home/httpd/html/adm/gpl.txt  # /home/httpd/html/adm/gpl.txt
 #  #
 # http://www.lon-capa.org/  # http://www.lon-capa.org/
 #  
 # Guy Albertelli  
 # 11/30 Gerd Kortemeyer  
 # 6/1,8/17,8/18 Gerd Kortemeyer  
 # 7/18 Jeremy Bowers  
   
 package Apache::lonhomework;  package Apache::lonhomework;
 use strict;  use strict;
Line 51  use Apache::externalresponse(); Line 47  use Apache::externalresponse();
 use Apache::rankresponse();  use Apache::rankresponse();
 use Apache::matchresponse();  use Apache::matchresponse();
 use Apache::chemresponse();  use Apache::chemresponse();
   use Apache::drawimage();
 use Apache::Constants qw(:common);  use Apache::Constants qw(:common);
 use HTML::Entities();  use HTML::Entities();
 use Apache::loncommon();  use Apache::loncommon();
Line 149  $Apache::lonxml::browse=''; Line 146  $Apache::lonxml::browse='';
   
 sub check_ip_acc {  sub check_ip_acc {
     my ($acc)=@_;      my ($acc)=@_;
     if (!defined($acc)) { return 1; }      if (!defined($acc) || $acc =~ /^\s*$/) { return 1; }
     my $allowed=0;      my $allowed=0;
     my $ip=$ENV{'REMOTE_ADDR'};      my $ip=$ENV{'REMOTE_ADDR'};
     my $name;      my $name;
Line 174  sub check_ip_acc { Line 171  sub check_ip_acc {
  use Socket;   use Socket;
  my $netaddr=inet_aton($ip);   my $netaddr=inet_aton($ip);
  ($name)=gethostbyaddr($netaddr,AF_INET);   ($name)=gethostbyaddr($netaddr,AF_INET);
  }      }
     if ($name =~ /\Q$pattern\E$/i) { $allowed=1; }      if ($name =~ /\Q$pattern\E$/i) { $allowed=1; }
  } elsif ($pattern =~ /\d+\.\d+\.\d+\.\d+/) {   } elsif ($pattern =~ /\d+\.\d+\.\d+\.\d+/) {
     #127.0.0.1      #127.0.0.1
Line 205  sub check_access { Line 202  sub check_access {
     my $passed;      my $passed;
   
     if ($ENV{'request.state'} eq "construct") {      if ($ENV{'request.state'} eq "construct") {
    if ($ENV{'form.problemstate'}) {
       if ($ENV{'form.problemstate'} =~ /^CANNOT_ANSWER/) {
    if ( ! ($ENV{'form.problemstate'} eq 'CANNOT_ANSWER_correct' &&
    lc($Apache::lonhomework::problemstatus) eq 'no')) {
       return ('CANNOT_ANSWER',
       &mt('is in this state by royal decree.'));
    }
       } else {
    return ($ENV{'form.problemstate'},
    &mt('is in this state by royal decree.'));
       }
    }
  &Apache::lonxml::debug("in construction ignoring dates");   &Apache::lonxml::debug("in construction ignoring dates");
  $status='CAN_ANSWER';   $status='CAN_ANSWER';
  $datemsg=&mt('is in under construction');   $datemsg=&mt('is in under construction');
  return ($status,$datemsg);  # return ($status,$datemsg);
     }      }
   
     &Apache::lonxml::debug("checking for part :$id:");      &Apache::lonxml::debug("checking for part :$id:");
     &Apache::lonxml::debug("time:".time);      &Apache::lonxml::debug("time:".time);
       
     my $allowed=&check_ip_acc(&Apache::lonnet::EXT("resource.$id.acc"));  
     if (!$allowed) {  
  $status='INVALID_ACCESS';  
  $date=&mt("may be open from a different computer.");  
  return($status,$date);  
     }  
   
     foreach $temp ("opendate","duedate","answerdate") {      if ($ENV{'request.state'} ne "construct") {
  $lastdate = $date;   my $allowed=&check_ip_acc(&Apache::lonnet::EXT("resource.$id.acc"));
  $date = &Apache::lonnet::EXT("resource.$id.$temp");   if (!$allowed && ($Apache::lonhomework::browse ne 'F')) {
  my $thistype = &Apache::lonnet::EXT("resource.$id.$temp.type");      $status='INVALID_ACCESS';
  if ($thistype =~ /^(con_lost|no_such_host)/ ||      $date=&mt("can not be accessed from your location.");
     $date     =~ /^(con_lost|no_such_host)/) {  
     $status='UNAVAILABLE';  
     $date=&mt("may open later.");  
     return($status,$date);      return($status,$date);
  }   }
  if ($thistype eq 'date_interval') {  
     if ($temp eq 'opendate') {   foreach $temp ("opendate","duedate","answerdate") {
  $date=&Apache::lonnet::EXT("resource.$id.duedate")-$date;      $lastdate = $date;
     }      $date = &Apache::lonnet::EXT("resource.$id.$temp");
     if ($temp eq 'answerdate') {      my $thistype = &Apache::lonnet::EXT("resource.$id.$temp.type");
  $date=&Apache::lonnet::EXT("resource.$id.duedate")+$date;      if ($thistype =~ /^(con_lost|no_such_host)/ ||
    $date     =~ /^(con_lost|no_such_host)/) {
    $status='UNAVAILABLE';
    $date=&mt("may open later.");
    return($status,$date);
       }
       if ($thistype eq 'date_interval') {
    if ($temp eq 'opendate') {
       $date=&Apache::lonnet::EXT("resource.$id.duedate")-$date;
    }
    if ($temp eq 'answerdate') {
       $date=&Apache::lonnet::EXT("resource.$id.duedate")+$date;
    }
       }
       &Apache::lonxml::debug("found :$date: for :$temp:");
       if ($date eq '') {
    $date = &mt("an unknown date"); $passed = 0;
       } elsif ($date eq 'con_lost') {
    $date = &mt("an indeterminate date"); $passed = 0;
       } else {
    if (time < $date) { $passed = 0; } else { $passed = 1; }
    $date = localtime $date;
     }      }
       if (!$passed) { $type=$temp; last; }
  }   }
  &Apache::lonxml::debug("found :$date: for :$temp:");   &Apache::lonxml::debug("have :$type:$passed:");
  if ($date eq '') {   if ($passed) {
     $date = &mt("an unknown date"); $passed = 0;      $status='SHOW_ANSWER';
  } elsif ($date eq 'con_lost') {      $datemsg=$date;
     $date = &mt("an indeterminate date"); $passed = 0;   } elsif ($type eq 'opendate') {
  } else {      $status='CLOSED';
     if (time < $date) { $passed = 0; } else { $passed = 1; }      $datemsg = &mt("will open on")." $date";
     $date = localtime $date;   } elsif ($type eq 'duedate') {
       $status='CAN_ANSWER';
       $datemsg = &mt("is due at")." $date";
    } elsif ($type eq 'answerdate') {
       $status='CLOSED';
       $datemsg = &mt("was due on")." $lastdate".&mt(", and answers will be available on")." $date";
  }   }
  if (!$passed) { $type=$temp; last; }  
     }  
     &Apache::lonxml::debug("have :$type:$passed:");  
     if ($passed) {  
  $status='SHOW_ANSWER';  
  $datemsg=$date;  
     } elsif ($type eq 'opendate') {  
  $status='CLOSED';  
  $datemsg = &mt("will open on")." $date";  
     } elsif ($type eq 'duedate') {  
  $status='CAN_ANSWER';  
  $datemsg = &mt("is due at")." $date";  
     } elsif ($type eq 'answerdate') {  
  $status='CLOSED';  
  $datemsg = &mt("was due on")." $lastdate".&mt(", and answers will be available on")." $date";  
     }      }
     if ($status eq 'CAN_ANSWER') {      if ($status eq 'CAN_ANSWER') {
  #check #tries, and if correct.   #check #tries, and if correct.
  my $tries = $Apache::lonhomework::history{"resource.$id.tries"};   my $tries = $Apache::lonhomework::history{"resource.$id.tries"};
  my $maxtries = &Apache::lonnet::EXT("resource.$id.maxtries");   my $maxtries = &Apache::lonnet::EXT("resource.$id.maxtries");
  if ( $tries eq '' ) { $tries = '0'; }   if ( $tries eq '' ) { $tries = '0'; }
  if ( $maxtries eq '' ) { $maxtries = '2'; }    if ( $maxtries eq '' && 
  if ($tries >= $maxtries) { $status = 'CANNOT_ANSWER'; }       $ENV{'request.state'} ne 'construct') { $maxtries = '2'; } 
    if ($maxtries && $tries >= $maxtries) { $status = 'CANNOT_ANSWER'; }
  # if (correct and show prob status) or excused then CANNOT_ANSWER   # if (correct and show prob status) or excused then CANNOT_ANSWER
  if(($Apache::lonhomework::history{"resource.$id.solved"}=~/^correct/   if(($Apache::lonhomework::history{"resource.$id.solved"}=~/^correct/
     &&      &&
Line 379  sub handle_save_or_undo { Line 391  sub handle_save_or_undo {
     my $filetmp =$file.".tmp";      my $filetmp =$file.".tmp";
     my $error=0;      my $error=0;
   
       &Apache::lonnet::correct_line_ends($result);
   
     if ($ENV{'form.Undo'} eq &mt('undo')) {      if ($ENV{'form.Undo'} eq &mt('undo')) {
  my $error=0;   my $error=0;
  if (!copy($file,$filetmp)) { $error=1; }   if (!copy($file,$filetmp)) { $error=1; }
  if ((!$error) && (!copy($filebak,$file))) { $error=1; }   if ((!$error) && (!copy($filebak,$file))) { $error=1; }
  if ((!$error) && (!move($filetmp,$filebak))) { $error=1; }   if ((!$error) && (!move($filetmp,$filebak))) { $error=1; }
  if (!$error) {   if (!$error) {
     $request->print("<p><b>".&mt("Undid changes, Switched")." $filebak ".&mt("and")." $file</b></p>");      &Apache::lonxml::info("<p><b>".&mt("Undid changes, Switched")." $filebak ".&mt("and")." $file</b></p>");
  } else {   } else {
     $request->print("<p><font color=\"red\" size=\"+1\"><b>".&mt("Unable to undo, unable to switch")." $filebak ".&mt("and")." $file</b></font></p>");      &Apache::lonxml::info("<p><font color=\"red\" size=\"+1\"><b>".&mt("Unable to undo, unable to switch")." $filebak ".&mt("and")." $file</b></font></p>");
     $error=1;      $error=1;
  }   }
     } else {      } else {
  my $fs=Apache::File->new(">$filebak");   my $fs=Apache::File->new(">$filebak");
  if (defined($fs)) {   if (defined($fs)) {
     print $fs $$problem;      print $fs $$problem;
     $request->print("<b>".&mt("Making Backup to").      &Apache::lonxml::info("<b>".&mt("Making Backup to").
     " $filebak</b><br />");    " $filebak</b>");
  } else {   } else {
     $request->print("<font color=\"red\" size=\"+1\"><b>".&mt("Unable to make backup")." $filebak</b></font>");      &Apache::lonxml::info("<font color=\"red\" size=\"+1\"><b>".&mt("Unable to make backup")." $filebak</b></font>");
     $error=2;      $error=2;
  }   }
  my $fh=Apache::File->new(">$file");   my $fh=Apache::File->new(">$file");
  if (defined($fh)) {   if (defined($fh)) {
     print $fh $$result;      print $fh $$result;
     $request->print("<b>".&mt("Saving Modifications to").      &Apache::lonxml::info("<b>".&mt("Saving Modifications to").
     " $file</b><br />");    " $file</b>");
  } else {   } else {
     $request->print("<font color=\"red\" size=\"+1\"><b>".      &Apache::lonxml::info("<font color=\"red\" size=\"+1\"><b>".
     &mt("Unable to write to")." $file</b></font>");    &mt("Unable to write to")." $file</b></font>");
     $error|=4;      $error|=4;
  }   }
     }      }
Line 418  sub analyze_header { Line 432  sub analyze_header {
     my ($request) = @_;      my ($request) = @_;
     my $result.='<html>      my $result.='<html>
             <head><title>'.&mt("Analyzing a problem").'</title></head>              <head><title>'.&mt("Analyzing a problem").'</title></head>
             <body bgcolor="#FFFFFF">              <body bgcolor="#FFFFFF">'.&Apache::lonxml::message_location().'
             <form name="lonhomework" method="POST" action="'.              <form name="lonhomework" method="POST" action="'.
     $ENV{'request.uri'}.'">      $ENV{'request.uri'}.'">
             <input type="submit" name="problemmode" value="'.&mt("EditXML").'" />              <input type="submit" name="problemmode" value="'.&mt("EditXML").'" />
Line 428  sub analyze_header { Line 442  sub analyze_header {
             <hr />              <hr />
             '.&mt('List of possible answers').':              '.&mt('List of possible answers').':
             </form>';              </form>';
       &Apache::lonxml::add_messages(\$result);
     $request->print($result);      $request->print($result);
     $request->rflush();      $request->rflush();
 }  }
Line 492  sub analyze { Line 507  sub analyze {
     }      }
     $request->print('</table>');      $request->print('</table>');
  } else {   } else {
     $request->print('<p>'.&mt('Part').' '.$part.' '.      $request->print('<p>'.&mt('Response').' '.$part.' '.
     &mt('is not analyzable at this time').'</p>');      &mt('is not analyzable at this time').'</p>');
  }   }
     }      }
     if (scalar(keys(%allparts)) == 0 ) {      if (scalar(keys(%allparts)) == 0 ) {
  $request->print('<p>'.&mt('Found no analyzable parts in this problem, currently only Numerical, Formula and String response styles are supported.').'</p>');   $request->print('<p>'.&mt('Found no analyzable respones in this problem, currently only Numerical, Formula and String response styles are supported.').'</p>');
     }      }
     &Apache::lonhtmlcommon::Close_PrgWin($request,\%prog_state);      &Apache::lonhtmlcommon::Close_PrgWin($request,\%prog_state);
     &analyze_footer($request);      &analyze_footer($request);
Line 526  sub editxmlmode { Line 541  sub editxmlmode {
  &renderpage($request,$file);   &renderpage($request,$file);
     } else {      } else {
  my ($rows,$cols) = &Apache::edit::textarea_sizes(\$problem);   my ($rows,$cols) = &Apache::edit::textarea_sizes(\$problem);
  my $xml_help = Apache::loncommon::helpLatexCheatsheet("Problem_Editor_XML_Index",   my $xml_help = '<table><tr><td>'.
       "Problem Editing Help");      &Apache::loncommon::helpLatexCheatsheet("Problem_Editor_XML_Index",
       "Problem Editing Help").
       '</td><td>'.
          &Apache::loncommon::help_open_faq(5).
          &Apache::loncommon::help_open_bug('Authoring').'</td></tr></table>';
  if ($cols > 80) { $cols = 80; }   if ($cols > 80) { $cols = 80; }
  if ($cols < 70) { $cols = 70; }   if ($cols < 70) { $cols = 70; }
  if ($rows < 20) { $rows = 20; }   if ($rows < 20) { $rows = 20; }
  $result.='<html><body bgcolor="#FFFFFF">   $result.='<html><body bgcolor="#FFFFFF">'.
       &Apache::lonxml::message_location().'
             <form name="lonhomework" method="POST" action="'.              <form name="lonhomework" method="POST" action="'.
     $ENV{'request.uri'}.'">      $ENV{'request.uri'}.'">
             <input type="hidden" name="problemmode" value="'.&mt('EditXML').'" />              <input type="hidden" name="problemmode" value="'.&mt('EditXML').'" />
             <input type="submit" name="problemmode" value="'.&mt('Discard Edits and View').'" />              <input type="submit" name="problemmode" accesskey="d" value="'.&mt('Discard Edits and View').'" />
             <input type="submit" name="problemmode" value="'.&mt('Edit').'" />              <input type="submit" name="problemmode" accesskey="e" value="'.&mt('Edit').'" />
             <hr />              <hr />
             <input type="submit" name="submit" value="'.&mt('Submit Changes').'" />              <input type="submit" name="submit" accesskey="s" value="'.&mt('Submit Changes').'" />
             <input type="submit" name="submit" value="'.&mt('Submit Changes and View').'" />              <input type="submit" name="submit" accesskey="v" value="'.&mt('Submit Changes and View').'" />
             <input type="submit" name="Undo" value="'.&mt('undo').'" />              <input type="submit" name="Undo" accesskey="u" value="'.&mt('undo').'" />
             <hr />              <hr />
             ' . $xml_help . '              ' . $xml_help . '
             <textarea rows="'.$rows.'" cols="'.$cols.'" name="editxmltext">'.              <textarea rows="'.$rows.'" cols="'.$cols.'" name="editxmltext">'.
     &HTML::Entities::encode($problem).'</textarea>      &HTML::Entities::encode($problem,'<>&"').'</textarea>
             </form></body></html>';              </form></body></html>';
    &Apache::lonxml::add_messages(\$result);
  $request->print($result);   $request->print($result);
     }      }
     return '';      return '';
Line 555  sub renderpage { Line 576  sub renderpage {
     my ($request,$file) = @_;      my ($request,$file) = @_;
   
     my (@targets) = &get_target();      my (@targets) = &get_target();
       &Apache::lonhomework::showhashsubset(\%ENV,'form.');
     &Apache::lonxml::debug("Running targets ".join(':',@targets));      &Apache::lonxml::debug("Running targets ".join(':',@targets));
       my $overall_result;
     foreach my $target (@targets) {      foreach my $target (@targets) {
  #my $t0 = [&gettimeofday()];   #my $t0 = [&gettimeofday()];
  my $problem=&Apache::lonnet::getfile($file);   my $problem=&Apache::lonnet::getfile($file);
Line 587  sub renderpage { Line 610  sub renderpage {
     #$result =~ s:</body>::;      #$result =~ s:</body>::;
     #$result.="<br />Spent $td seconds processing target $target\n</body>";      #$result.="<br />Spent $td seconds processing target $target\n</body>";
     #}      #}
     $request->print($result);  #    $request->print($result);
     $request->rflush();      $overall_result.=$result;
   #    $request->rflush();
  }   }
  #$request->print(":Result ends");   #$request->print(":Result ends");
  #my $td=&tv_interval($t0);   #my $td=&tv_interval($t0);
     }      }
       &Apache::lonxml::add_messages(\$overall_result);
       $request->print($overall_result);   
       $request->rflush();   
 }  }
   
 # with no arg it returns a HTML <option> list of the template titles  # with no arg it returns a HTML <option> list of the template titles
Line 642  sub newproblem { Line 669  sub newproblem {
  &renderpage($request,$dest);   &renderpage($request,$dest);
     } else {      } else {
  my $url=$request->uri;   my $url=$request->uri;
    my $shownurl=$url;
    $shownurl=~s-^/~-/priv/-;
  my $dest = &Apache::lonnet::filelocation("",$request->uri);   my $dest = &Apache::lonnet::filelocation("",$request->uri);
  my $errormsg;   my $errormsg;
  if ($ENV{'form.newfile'}) {   if ($ENV{'form.newfile'}) {
     $errormsg='<p><font color="red">'.&mt('You did not select a template.').'</font></p>'."\n";      $errormsg='<p><font color="red">'.&mt('You did not select a template.').'</font></p>'."\n";
  }   }
  my $instructions;   my $instructions;
    my $bodytag=&Apache::loncommon::bodytag(undef,undef,undef,1);
  if ($templatelist) { $instructions=&mt(", select a template from the pull-down menu below.").'<br />'.&mt("Then");}   if ($templatelist) { $instructions=&mt(", select a template from the pull-down menu below.").'<br />'.&mt("Then");}
  my %lt=&Apache::lonlocal::texthash( 'create' => 'Creating a new',   my %lt=&Apache::lonlocal::texthash( 'create' => 'Creating a new',
   'resource' => 'resource',    'resource' => 'resource',
Line 658  sub newproblem { Line 688  sub newproblem {
   'Create' => 'Create',    'Create' => 'Create',
   'button' => 'button');    'button' => 'button');
  $request->print(<<ENDNEWPROBLEM);   $request->print(<<ENDNEWPROBLEM);
 <body bgcolor="#FFFFFF">  $bodytag
 <h1>$lt{'create'} $extension $lt{'resource'}</h1>  <h1>$lt{'create'} $extension $lt{'resource'}</h1>
 $errormsg  $errormsg
 $lt{'requested'} <tt>$url</tt> $lt{'not exist'}.  $lt{'requested'} <tt>$shownurl</tt> $lt{'not exist'}.
 <p>  <p>
 <b>$lt{'createnew'} $extension$instructions $lt{'click'} "$lt{'Create'} $extension" $lt{'button'}.</b>  <b>$lt{'createnew'} $extension$instructions $lt{'click'} "$lt{'Create'} $extension" $lt{'button'}.</b>
 </p>  </p>
Line 687  sub view_or_edit_menu { Line 717  sub view_or_edit_menu {
     $request->print(<<EDITMENU);      $request->print(<<EDITMENU);
 <body bgcolor="#FFFFFF">  <body bgcolor="#FFFFFF">
 <form action="$url" method="POST">  <form action="$url" method="POST">
 $lt{'would'} <input type="submit" name="problemmode" value="&lt{'view'}">  $lt{'would'} <input type="submit" name="problemmode" accesskey="v" value="&lt{'view'}">
 &lt{'or'} <input type="submit" name="problemmode" value="&lt{'Edit'}">  &lt{'or'} <input type="submit" name="problemmode" accesskey="e" value="&lt{'Edit'}">
 &lt{'the problem'}.  &lt{'the problem'}.
 </form>  </form>
 </body>  </body>
Line 700  sub handler { Line 730  sub handler {
     my $request=$_[0];      my $request=$_[0];
           
     $Apache::lonxml::debug=$ENV{'user.debug'};      $Apache::lonxml::debug=$ENV{'user.debug'};
   
     if (&setupheader($request)) { return OK; }      if (&setupheader($request)) { return OK; }
     $ENV{'request.uri'}=$request->uri;      $ENV{'request.uri'}=$request->uri;
   
Line 724  sub handler { Line 753  sub handler {
     #check if we know where we are      #check if we know where we are
     if ($ENV{'request.course.fn'} && !&Apache::lonnet::symbread()) {       if ($ENV{'request.course.fn'} && !&Apache::lonnet::symbread()) { 
  # if we are browsing we might not be able to know where we are   # if we are browsing we might not be able to know where we are
  if ($Apache::lonhomework::browse ne 'F') {   if ($Apache::lonhomework::browse ne 'F' && 
       $ENV{'request.state'} ne "construct") {
     #should know where we are, so ask      #should know where we are, so ask
     if ( &Apache::lonnet::mod_perl_version() == 2 ) {      if ( &Apache::lonnet::mod_perl_version() == 2 ) {
  &Apache::lonnet::cleanenv();   &Apache::lonnet::cleanenv();
Removed from v.1.153  
changed lines
  Added in v.1.173

FreeBSD-CVSweb <freebsd-cvsweb@FreeBSD.org>
500 Internal Server Error

Internal Server Error

The server encountered an internal error or misconfiguration and was unable to complete your request.

Please contact the server administrator at root@localhost to inform them of the time this error occurred, and the actions you performed just before this error.

More information about this error may be available in the server error log.