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Diff for /loncom/lonnet/perl/lonnet.pm between versions 1.954 and 1.957

version 1.954, 2008/04/04 16:56:11 version 1.957, 2008/04/30 22:42:59
Line 88  delayed. Line 88  delayed.
 {  {
     my $logid;      my $logid;
     sub instructor_log {      sub instructor_log {
  my ($hash_name,$storehash,$delflag,$uname,$udom)=@_;   my ($hash_name,$storehash,$delflag,$uname,$udom,$cnum,$cdom)=@_;
           if (($cnum eq '') || ($cdom eq '')) {
               $cnum = $env{'course.'.$env{'request.course.id'}.'.num'};
               $cdom = $env{'course.'.$env{'request.course.id'}.'.domain'};
           }
  $logid++;   $logid++;
  my $id=time().'00000'.$$.'00000'.$logid;          my $now = time();
    my $id=$now.'00000'.$$.'00000'.$logid;
  return &Apache::lonnet::put('nohist_'.$hash_name,   return &Apache::lonnet::put('nohist_'.$hash_name,
     { $id => {      { $id => {
  'exe_uname' => $env{'user.name'},   'exe_uname' => $env{'user.name'},
  'exe_udom'  => $env{'user.domain'},   'exe_udom'  => $env{'user.domain'},
  'exe_time'  => time(),   'exe_time'  => $now,
  'exe_ip'    => $ENV{'REMOTE_ADDR'},   'exe_ip'    => $ENV{'REMOTE_ADDR'},
  'delflag'   => $delflag,   'delflag'   => $delflag,
  'logentry'  => $storehash,   'logentry'  => $storehash,
  'uname'     => $uname,   'uname'     => $uname,
  'udom'      => $udom,   'udom'      => $udom,
     }      }
   },    },$cdom,$cnum);
     $env{'course.'.$env{'request.course.id'}.'.domain'},  
     $env{'course.'.$env{'request.course.id'}.'.num'}  
     );  
     }      }
 }  }
   
Line 2480  sub userrolelog { Line 2482  sub userrolelog {
     }      }
 }  }
   
   sub courserolelog {
       my ($trole,$username,$domain,$area,$tstart,$tend,$delflag,$selfenroll,$context)=@_;
       if (($trole eq 'cc') || ($trole eq 'in') ||
           ($trole eq 'ep') || ($trole eq 'ad') ||
           ($trole eq 'ta') || ($trole eq 'st') ||
           ($trole=~/^cr/) || ($trole eq 'gr')) {
           if ($area =~ m-^/($match_domain)/($match_courseid)/?([^/]*)-) {
               my $cdom = $1;
               my $cnum = $2;
               my $sec = $3;
               my $namespace = 'rolelog';
               my %storehash = (
                                  role    => $trole,
                                  start   => $tstart,
                                  end     => $tend,
                                  selfenroll => $selfenroll,
                                  context    => $context,
                               );
               if ($trole eq 'gr') {
                   $namespace = 'groupslog';
                   $storehash{'group'} = $sec;
               } else {
                   $storehash{'section'} = $sec;
               }
               &instructor_log($namespace,\%storehash,$delflag,$username,$domain,$cnum,$cdom);
           }
       }
       return;
   }
   
 sub get_course_adv_roles {  sub get_course_adv_roles {
     my ($cid,$codes) = @_;      my ($cid,$codes) = @_;
     $cid=$env{'request.course.id'} unless (defined($cid));      $cid=$env{'request.course.id'} unless (defined($cid));
Line 5236  sub toggle_coursegroup_status { Line 5268  sub toggle_coursegroup_status {
 }  }
   
 sub modify_group_roles {  sub modify_group_roles {
     my ($cdom,$cnum,$group_id,$user,$end,$start,$userprivs) = @_;      my ($cdom,$cnum,$group_id,$user,$end,$start,$userprivs,$selfenroll,$context) = @_;
     my $url = '/'.$cdom.'/'.$cnum.'/'.$group_id;      my $url = '/'.$cdom.'/'.$cnum.'/'.$group_id;
     my $role = 'gr/'.&escape($userprivs);      my $role = 'gr/'.&escape($userprivs);
     my ($uname,$udom) = split(/:/,$user);      my ($uname,$udom) = split(/:/,$user);
     my $result = &assignrole($udom,$uname,$url,$role,$end,$start);      my $result = &assignrole($udom,$uname,$url,$role,$end,$start,'',$selfenroll,$context);
     if ($result eq 'ok') {      if ($result eq 'ok') {
         &devalidate_getgroups_cache($udom,$uname,$cdom,$cnum);          &devalidate_getgroups_cache($udom,$uname,$cdom,$cnum);
     }      }
Line 5356  sub plaintext { Line 5388  sub plaintext {
 # ----------------------------------------------------------------- Assign Role  # ----------------------------------------------------------------- Assign Role
   
 sub assignrole {  sub assignrole {
     my ($udom,$uname,$url,$role,$end,$start,$deleteflag,$selfenroll)=@_;      my ($udom,$uname,$url,$role,$end,$start,$deleteflag,$selfenroll,
           $context)=@_;
     my $mrole;      my $mrole;
     if ($role =~ /^cr\//) {      if ($role =~ /^cr\//) {
         my $cwosec=$url;          my $cwosec=$url;
Line 5415  sub assignrole { Line 5448  sub assignrole {
     }      }
     my $origstart = $start;      my $origstart = $start;
     my $origend = $end;      my $origend = $end;
       my $delflag;
 # actually delete  # actually delete
     if ($deleteflag) {      if ($deleteflag) {
  if ((&allowed('dro',$udom)) || (&allowed('dro',$url))) {   if ((&allowed('dro',$udom)) || (&allowed('dro',$url))) {
Line 5425  sub assignrole { Line 5459  sub assignrole {
 # set start and finish to negative values for userrolelog  # set start and finish to negative values for userrolelog
            $start=-1;             $start=-1;
            $end=-1;             $end=-1;
              $delflag = 1;
         }          }
     }      }
 # send command  # send command
Line 5433  sub assignrole { Line 5468  sub assignrole {
     if ($answer eq 'ok') {      if ($answer eq 'ok') {
  &userrolelog($role,$uname,$udom,$url,$start,$end);   &userrolelog($role,$uname,$udom,$url,$start,$end);
 # for course roles, perform group memberships changes triggered by role change.  # for course roles, perform group memberships changes triggered by role change.
           &courserolelog($role,$uname,$udom,$url,$origstart,$origend,$delflag,$selfenroll,$context);
         unless ($role =~ /^gr/) {          unless ($role =~ /^gr/) {
             &Apache::longroup::group_changes($udom,$uname,$url,$role,$origend,              &Apache::longroup::group_changes($udom,$uname,$url,$role,$origend,
                                              $origstart);                                               $origstart,$selfenroll,$context);
         }          }
     }      }
     return $answer;      return $answer;
Line 5572  sub modifyuser { Line 5608  sub modifyuser {
   
 sub modifystudent {  sub modifystudent {
     my ($udom,$uname,$uid,$umode,$upass,$first,$middle,$last,$gene,$usec,      my ($udom,$uname,$uid,$umode,$upass,$first,$middle,$last,$gene,$usec,
         $end,$start,$forceid,$desiredhome,$email,$type,$locktype,$cid)=@_;          $end,$start,$forceid,$desiredhome,$email,$type,$locktype,$cid,
           $selfenroll,$context)=@_;
     if (!$cid) {      if (!$cid) {
  unless ($cid=$env{'request.course.id'}) {   unless ($cid=$env{'request.course.id'}) {
     return 'not_in_class';      return 'not_in_class';
Line 5587  sub modifystudent { Line 5624  sub modifystudent {
     # students environment      # students environment
     $uid = undef if (!$forceid);      $uid = undef if (!$forceid);
     $reply = &modify_student_enrollment($udom,$uname,$uid,$first,$middle,$last,      $reply = &modify_student_enrollment($udom,$uname,$uid,$first,$middle,$last,
  $gene,$usec,$end,$start,$type,$locktype,$cid);   $gene,$usec,$end,$start,$type,$locktype,$cid,$selfenroll,$context);
     return $reply;      return $reply;
 }  }
   
 sub modify_student_enrollment {  sub modify_student_enrollment {
     my ($udom,$uname,$uid,$first,$middle,$last,$gene,$usec,$end,$start,$type,$locktype,$cid,$selfenroll) = @_;      my ($udom,$uname,$uid,$first,$middle,$last,$gene,$usec,$end,$start,$type,$locktype,$cid,$selfenroll,$context) = @_;
     my ($cdom,$cnum,$chome);      my ($cdom,$cnum,$chome);
     if (!$cid) {      if (!$cid) {
  unless ($cid=$env{'request.course.id'}) {   unless ($cid=$env{'request.course.id'}) {
Line 5650  sub modify_student_enrollment { Line 5687  sub modify_student_enrollment {
     if ($usec) {      if ($usec) {
  $uurl.='/'.$usec;   $uurl.='/'.$usec;
     }      }
     return &assignrole($udom,$uname,$uurl,'st',$end,$start,undef,$selfenroll);      return &assignrole($udom,$uname,$uurl,'st',$end,$start,undef,$selfenroll,$context);
 }  }
   
 sub format_name {  sub format_name {
Line 5779  sub is_course { Line 5816  sub is_course {
 # ---------------------------------------------------------- Assign Custom Role  # ---------------------------------------------------------- Assign Custom Role
   
 sub assigncustomrole {  sub assigncustomrole {
     my ($udom,$uname,$url,$rdom,$rnam,$rolename,$end,$start,$deleteflag)=@_;      my ($udom,$uname,$url,$rdom,$rnam,$rolename,$end,$start,$deleteflag,$selfenroll,$context)=@_;
     return &assignrole($udom,$uname,$url,'cr/'.$rdom.'/'.$rnam.'/'.$rolename,      return &assignrole($udom,$uname,$url,'cr/'.$rdom.'/'.$rnam.'/'.$rolename,
                        $end,$start,$deleteflag);                         $end,$start,$deleteflag,$selfenroll,$context);
 }  }
   
 # ----------------------------------------------------------------- Revoke Role  # ----------------------------------------------------------------- Revoke Role
   
 sub revokerole {  sub revokerole {
     my ($udom,$uname,$url,$role,$deleteflag)=@_;      my ($udom,$uname,$url,$role,$deleteflag,$selfenroll,$context)=@_;
     my $now=time;      my $now=time;
     return &assignrole($udom,$uname,$url,$role,$now,$deleteflag);      return &assignrole($udom,$uname,$url,$role,$now,$deleteflag,$selfenroll,$context);
 }  }
   
 # ---------------------------------------------------------- Revoke Custom Role  # ---------------------------------------------------------- Revoke Custom Role
   
 sub revokecustomrole {  sub revokecustomrole {
     my ($udom,$uname,$url,$rdom,$rnam,$rolename,$deleteflag)=@_;      my ($udom,$uname,$url,$rdom,$rnam,$rolename,$deleteflag,$selfenroll,$context)=@_;
     my $now=time;      my $now=time;
     return &assigncustomrole($udom,$uname,$url,$rdom,$rnam,$rolename,$now,      return &assigncustomrole($udom,$uname,$url,$rdom,$rnam,$rolename,$now,
            $deleteflag);             $deleteflag,$selfenroll,$context);
 }  }
   
 # ------------------------------------------------------------ Disk usage  # ------------------------------------------------------------ Disk usage
 sub diskusage {  sub diskusage {
     my ($udom,$uname,$directoryRoot)=@_;      my ($udom,$uname,$directorypath,$getpropath)=@_;
     $directoryRoot =~ s/\/$//;      $directorypath =~ s/\/$//;
     my $listing=&reply('du:'.$directoryRoot,homeserver($uname,$udom));      my $listing=&reply('du2:'.&escape($directorypath).':'
                          .&escape($getpropath).':'.&escape($uname).':'
                          .&escape($udom),homeserver($uname,$udom));
       if ($listing eq 'unknown_cmd') {
           if ($getpropath) {
               $directorypath = &propath($udom,$uname).'/'.$directorypath; 
           }
           $listing = &reply('du:'.$directorypath,homeserver($uname,$udom));
       }
     return $listing;      return $listing;
 }  }
   
Line 6222  sub unmark_as_readonly { Line 6267  sub unmark_as_readonly {
 # ------------------------------------------------------------ Directory lister  # ------------------------------------------------------------ Directory lister
   
 sub dirlist {  sub dirlist {
     my ($uri,$userdomain,$username,$alternateDirectoryRoot)=@_;      my ($uri,$userdomain,$username,$getpropath,$getuserdir,$alternateRoot)=@_;
   
     $uri=~s/^\///;      $uri=~s/^\///;
     $uri=~s/\/$//;      $uri=~s/\/$//;
     my ($udom, $uname);      my ($udom, $uname);
     (undef,$udom,$uname)=split(/\//,$uri);      if ($getuserdir) {
     if(defined($userdomain)) {  
         $udom = $userdomain;          $udom = $userdomain;
     }  
     if(defined($username)) {  
         $uname = $username;          $uname = $username;
       } else {
           (undef,$udom,$uname)=split(/\//,$uri);
           if(defined($userdomain)) {
               $udom = $userdomain;
           }
           if(defined($username)) {
               $uname = $username;
           }
     }      }
       my ($dirRoot,$listing,@listing_results);
   
     my $dirRoot = $perlvar{'lonDocRoot'};      $dirRoot = $perlvar{'lonDocRoot'};
     if(defined($alternateDirectoryRoot)) {      if (defined($getpropath)) {
         $dirRoot = $alternateDirectoryRoot;          $dirRoot = &propath($udom,$uname);
         $dirRoot =~ s/\/$//;          $dirRoot =~ s/\/$//;
       } elsif (defined($getuserdir)) {
           my $subdir=$uname.'__';
           $subdir =~ s/(.)(.)(.).*/$1\/$2\/$3/;
           $dirRoot = $Apache::lonnet::perlvar{'lonUsersDir'}
                      ."/$udom/$subdir/$uname";
       } elsif (defined($alternateRoot)) {
           $dirRoot = $alternateRoot;
     }      }
   
     if($udom) {      if($udom) {
         if($uname) {          if($uname) {
             my $listing = &reply('ls2:'.$dirRoot.'/'.$uri,              $listing = &reply('ls3:'.&escape('/'.$uri).':'.$getpropath.':'
  &homeserver($uname,$udom));                                .$getuserdir.':'.&escape($dirRoot)
             my @listing_results;                                .':'.&escape($uname).':'.&escape($udom),
                                 &homeserver($uname,$udom));
               if ($listing eq 'unknown_cmd') {
                   $listing = &reply('ls2:'.$dirRoot.'/'.$uri,
                                     &homeserver($uname,$udom));
               } else {
                   @listing_results = map { &unescape($_); } split(/:/,$listing);
               }
             if ($listing eq 'unknown_cmd') {              if ($listing eq 'unknown_cmd') {
                 $listing = &reply('ls:'.$dirRoot.'/'.$uri,                  $listing = &reply('ls:'.$dirRoot.'/'.$uri,
   &homeserver($uname,$udom));    &homeserver($uname,$udom));
Line 6254  sub dirlist { Line 6318  sub dirlist {
                 @listing_results = map { &unescape($_); } split(/:/,$listing);                  @listing_results = map { &unescape($_); } split(/:/,$listing);
             }              }
             return @listing_results;              return @listing_results;
         } elsif(!defined($alternateDirectoryRoot)) {          } elsif(!$alternateRoot) {
             my %allusers;              my %allusers;
     my %servers = &get_servers($udom,'library');      my %servers = &get_servers($udom,'library');
     foreach my $tryserver (keys(%servers)) {       foreach my $tryserver (keys(%servers)) {
  my $listing = &reply('ls2:'.$perlvar{'lonDocRoot'}.'/res/'.                  $listing = &reply('ls3:'.&escape("/res/$udom").':::::'.
      $udom, $tryserver);                                    &escape($udom),$tryserver);
  my @listing_results;                  if ($listing eq 'unknown_cmd') {
       $listing = &reply('ls2:'.$perlvar{'lonDocRoot'}.'/res/'.
         $udom, $tryserver);
                   } else {
                       @listing_results = map { &unescape($_); } split(/:/,$listing);
                   }
  if ($listing eq 'unknown_cmd') {   if ($listing eq 'unknown_cmd') {
     $listing = &reply('ls:'.$perlvar{'lonDocRoot'}.'/res/'.      $listing = &reply('ls:'.$perlvar{'lonDocRoot'}.'/res/'.
       $udom, $tryserver);        $udom, $tryserver);
Line 6287  sub dirlist { Line 6356  sub dirlist {
         } else {          } else {
             return ('missing user name');              return ('missing user name');
         }          }
     } elsif(!defined($alternateDirectoryRoot)) {      } elsif(!defined($getpropath)) {
         my @all_domains = sort(&all_domains());          my @all_domains = sort(&all_domains());
          foreach my $domain (@all_domains) {          foreach my $domain (@all_domains) {
              $domain = $perlvar{'lonDocRoot'}.'/res/'.$domain.'/&domain';              $domain = $perlvar{'lonDocRoot'}.'/res/'.$domain.'/&domain';
          }          }
          return @all_domains;          return @all_domains;
      } else {      } else {
         return ('missing domain');          return ('missing domain');
     }      }
 }  }
Line 6303  sub dirlist { Line 6372  sub dirlist {
 # when it was last modified.  It will also return an error of -1  # when it was last modified.  It will also return an error of -1
 # if an error occurs  # if an error occurs
   
 ##  
 ## FIXME: This subroutine assumes its caller knows something about the  
 ## directory structure of the home server for the student ($root).  
 ## Not a good assumption to make.  Since this is for looking up files  
 ## in user directories, the full path should be constructed by lond, not  
 ## whatever machine we request data from.  
 ##  
 sub GetFileTimestamp {  sub GetFileTimestamp {
     my ($studentDomain,$studentName,$filename,$root)=@_;      my ($studentDomain,$studentName,$filename,$getuserdir)=@_;
     $studentDomain = &LONCAPA::clean_domain($studentDomain);      $studentDomain = &LONCAPA::clean_domain($studentDomain);
     $studentName   = &LONCAPA::clean_username($studentName);      $studentName   = &LONCAPA::clean_username($studentName);
     my $subdir=$studentName.'__';      my ($fileStat) = 
     $subdir =~ s/(.)(.)(.).*/$1\/$2\/$3/;          &Apache::lonnet::dirlist($filename,$studentDomain,$studentName, 
     my $proname="$studentDomain/$subdir/$studentName";                                   undef,$getuserdir);
     $proname .= '/'.$filename;  
     my ($fileStat) = &Apache::lonnet::dirlist($proname, $studentDomain,   
                                               $studentName, $root);  
     my @stats = split('&', $fileStat);      my @stats = split('&', $fileStat);
     if($stats[0] ne 'empty' && $stats[0] ne 'no_such_dir') {      if($stats[0] ne 'empty' && $stats[0] ne 'no_such_dir') {
         # @stats contains first the filename, then the stat output          # @stats contains first the filename, then the stat output
Line 6333  sub stat_file { Line 6392  sub stat_file {
     my ($uri) = @_;      my ($uri) = @_;
     $uri = &clutter_with_no_wrapper($uri);      $uri = &clutter_with_no_wrapper($uri);
   
     my ($udom,$uname,$file,$dir);      my ($udom,$uname,$file);
     if ($uri =~ m-^/(uploaded|editupload)/-) {      if ($uri =~ m-^/(uploaded|editupload)/-) {
  ($udom,$uname,$file) =   ($udom,$uname,$file) =
     ($uri =~ m-/(?:uploaded|editupload)/?($match_domain)/?($match_name)/?(.*)-);      ($uri =~ m-/(?:uploaded|editupload)/?($match_domain)/?($match_name)/?(.*)-);
  $file = 'userfiles/'.$file;   $file = 'userfiles/'.$file;
  $dir = &propath($udom,$uname);  
     }      }
     if ($uri =~ m-^/res/-) {      if ($uri =~ m-^/res/-) {
  ($udom,$uname) =    ($udom,$uname) = 
Line 6350  sub stat_file { Line 6408  sub stat_file {
  # unable to handle the uri   # unable to handle the uri
  return ();   return ();
     }      }
       my $getpropath;
     my ($result) = &dirlist($file,$udom,$uname,$dir);      if ($file =~ /^userfiles\//) {
           $getpropath = 1;
       }
       my ($result) = &dirlist($file,$udom,$uname,$getpropath);
     my @stats = split('&', $result);      my @stats = split('&', $result);
           
     if($stats[0] ne 'empty' && $stats[0] ne 'no_such_dir') {      if($stats[0] ne 'empty' && $stats[0] ne 'no_such_dir') {
Line 8096  sub filelocation { Line 8157  sub filelocation {
     } elsif ($file=~m{^/home/$match_username/public_html/}) {      } elsif ($file=~m{^/home/$match_username/public_html/}) {
  # is a correct contruction space reference   # is a correct contruction space reference
         $location = $file;          $location = $file;
       } elsif ($file =~ m-^\Q$Apache::lonnet::perlvar{'lonTabDir'}\E/-) {
           $location = $file;
     } elsif ($file=~/^\/*(uploaded|editupload)/) { # is an uploaded file      } elsif ($file=~/^\/*(uploaded|editupload)/) { # is an uploaded file
         my ($udom,$uname,$filename)=          my ($udom,$uname,$filename)=
      ($file=~m -^/+(?:uploaded|editupload)/+($match_domain)/+($match_name)/+(.*)$-);       ($file=~m -^/+(?:uploaded|editupload)/+($match_domain)/+($match_name)/+(.*)$-);
Line 8104  sub filelocation { Line 8167  sub filelocation {
         my @ids=&current_machine_ids();          my @ids=&current_machine_ids();
         foreach my $id (@ids) { if ($id eq $home) { $is_me=1; } }          foreach my $id (@ids) { if ($id eq $home) { $is_me=1; } }
         if ($is_me) {          if ($is_me) {
      $location=&propath($udom,$uname).       $location=&propath($udom,$uname).'/userfiles/'.$filename;
        '/userfiles/'.$filename;  
         } else {          } else {
    $location=$Apache::lonnet::perlvar{'lonDocRoot'}.'/userfiles/'.     $location=$Apache::lonnet::perlvar{'lonDocRoot'}.'/userfiles/'.
        $udom.'/'.$uname.'/'.$filename;         $udom.'/'.$uname.'/'.$filename;
Line 9018  provided for types, will default to retu Line 9080  provided for types, will default to retu
   
 =item *  =item *
   
 assignrole($udom,$uname,$url,$role,$end,$start) : assign role; give a role to a  assignrole($udom,$uname,$url,$role,$end,$start,$deleteflag,$selfenroll,$context) : assign role; give a role to a
 user for the level given by URL.  Optional start and end dates (leave empty  user for the level given by URL.  Optional start and end dates (leave empty
 string or zero for "no date")  string or zero for "no date")
   
Line 9042  modify user Line 9104  modify user
   
 modifystudent  modifystudent
   
 modify a students enrollment and identification information.  modify a student's enrollment and identification information.
 The course id is resolved based on the current users environment.    The course id is resolved based on the current users environment.  
 This means the envoking user must be a course coordinator or otherwise  This means the envoking user must be a course coordinator or otherwise
 associated with a course.  associated with a course.
Line 9054  Inputs: Line 9116  Inputs:
   
 =over 4  =over 4
   
 =item B<$udom> Students loncapa domain  =item B<$udom> Student's loncapa domain
   
 =item B<$uname> Students loncapa login name  =item B<$uname> Student's loncapa login name
   
 =item B<$uid> Students id/student number  =item B<$uid> Student's id/student number
   
 =item B<$umode> Students authentication mode  =item B<$umode> Student's authentication mode
   
 =item B<$upass> Students password  =item B<$upass> Student's password
   
 =item B<$first> Students first name  =item B<$first> Student's first name
   
 =item B<$middle> Students middle name  =item B<$middle> Student's middle name
   
 =item B<$last> Students last name  =item B<$last> Student's last name
   
 =item B<$gene> Students generation  =item B<$gene> Student's generation
   
 =item B<$usec> Students section in course  =item B<$usec> Student's section in course
   
 =item B<$end> Unix time of the roles expiration  =item B<$end> Unix time of the roles expiration
   
Line 9082  Inputs: Line 9144  Inputs:
   
 =item B<$desiredhome> server to use as home server for student  =item B<$desiredhome> server to use as home server for student
   
   =item B<$email> Student's permanent e-mail address
   
   =item B<$type> Type of enrollment (auto or manual)
   
   =item B<$locktype>
   
   =item B<$cid>
   
   =item B<$selfenroll>
   
   =item B<$context>
   
 =back  =back
   
 =item *  =item *
Line 9115  Inputs: Line 9189  Inputs:
   
 =item $start  =item $start
   
   =item $type
   
   =item $locktype
   
   =item $cid
   
   =item $selfenroll
   
   =item $context
   
 =back  =back
   
   
Removed from v.1.954  
changed lines
  Added in v.1.957

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