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Diff for /loncom/lonnet/perl/lonnet.pm between versions 1.1193 and 1.1196

version 1.1193, 2012/10/31 12:54:23 version 1.1196, 2012/11/10 13:58:31
Line 2653  sub allowuploaded { Line 2653  sub allowuploaded {
 # (b) When displaying folder contents in course editor, used to determine if  # (b) When displaying folder contents in course editor, used to determine if
 #     "Edit" link will be displayed alongside resource.  #     "Edit" link will be displayed alongside resource.
 #  #
 #  input: 3 args -- filename (decluttered), course number and course domain.  #  input: six args -- filename (decluttered), course number, course domain,
 #  output: array of four scalars --   #                   url, symb (if registered) and group (if this is a group
   #                   item -- e.g., bulletin board, group page etc.).
   #  output: array of five scalars -- 
 #          $cfile -- url for file editing if editable on current server  #          $cfile -- url for file editing if editable on current server
 #          $home -- homeserver of resource (i.e., for author if published,  #          $home -- homeserver of resource (i.e., for author if published,
 #                                           or course if uploaded.).  #                                           or course if uploaded.).
 #          $switchserver --  1 if server switch will be needed.  #          $switchserver --  1 if server switch will be needed.
 #          $uploaded -- 1 if resource is a file uploaded to a course.  #          $forceedit -- 1 if icon/link should be to go to edit mode 
   #          $forceview -- 1 if icon/link should be to go to view mode
 #  #
   
 sub can_edit_resource {  sub can_edit_resource {
     my ($file,$cnum,$cdom) = @_;      my ($file,$cnum,$cdom,$resurl,$symb,$group) = @_;
     my ($cfile,$home,$switchserver,$uploaded);      my ($cfile,$home,$switchserver,$forceedit,$forceview,$uploaded,$incourse);
   #
   # For aboutme pages user can only edit his/her own.
   #
       if ($resurl =~ m{^/adm/($match_domain)/($match_username)/aboutme$}) {
           my ($sdom,$sname) = ($1,$2);
           if (($sdom eq $env{'user.domain'}) && ($sname eq $env{'user.name'})) {
               $home = $env{'user.home'};
               $cfile = $resurl;
               if ($env{'form.forceedit'}) {
                   $forceview = 1;
               } else {
                   $forceedit = 1;
               }
               return ($cfile,$home,$switchserver,$forceedit,$forceview);
           } else {
               return;
           }
       }
   
       if ($env{'request.course.id'}) {
           my $crsedit = &Apache::lonnet::allowed('mdc',$env{'request.course.id'});
           if ($group ne '') {
   # if this is a group homepage or group bulletin board, check group privs
               my $allowed = 0;
               if ($resurl =~ m{^/adm/$cdom/$cnum/$group/smppg$}) {
                   if ((&Apache::lonnet::allowed('mdg',$env{'request.course.id'}.
                               ($env{'request.course.sec'}?'/'.$env{'request.course.sec'}:''))) ||
                           (&allowed('mgh',$env{'request.course.id'}.'/'.$group)) || $crsedit) {
                       $allowed = 1;
                   }
               } elsif ($resurl =~ m{^/adm/$cdom/$cnum/\d+/bulletinboard$}) {
                   unless ((&allowed(&Apache::lonnet::allowed('mdg',$env{'request.course.id'}.($env{'request.course.sec'}?'/'.$env{'request.course.sec'}:'')))) ||
                           (&allowed('cgb',$env{'request.course.id'}.$group)) || $crsedit) {
                       $allowed = 1;
                   }
               }
               if ($allowed) {
                   $home=&homeserver($cnum,$cdom);
                   if ($env{'form.forceedit'}) {
                       $forceview = 1;
                   } else {
                       $forceedit = 1;
                   }
                   $cfile = $resurl;
               } else {
                   return;
               }
           } else {
   #
   # No edit allowed where CC has switched to student role.
   #
               unless ($crsedit) {
                   return;
               }
           }
       }
   
     if ($file ne '') {      if ($file ne '') {
         if (($cnum =~ /$match_courseid/) && ($cdom =~ /$match_domain/)) {          if (($cnum =~ /$match_courseid/) && ($cdom =~ /$match_domain/)) {
             $uploaded = &is_course_upload($file,$cnum,$cdom);              if (&is_course_upload($file,$cnum,$cdom)) {
             if ($uploaded) {                  $uploaded = 1;
                 $home=&homeserver($cnum,$cdom);                  $incourse = 1;
                 if ($file =~/\.(htm|html|css|js|txt)$/) {                  if ($file =~/\.(htm|html|css|js|txt)$/) {
                     $cfile = &hreflocation('',$file);                      $cfile = &hreflocation('',$file);
                       $forceedit = 1;
                   }
               } elsif ($resurl =~ m{^/public/$cdom/$cnum/syllabus}) {
                   $incourse = 1;
                   if ($env{'form.forceedit'}) {
                       $forceview = 1;
                   } else {
                       $forceedit = 1;
                   }
                   $cfile = $resurl;
               } elsif (($resurl ne '') && (&is_on_map($resurl))) { 
                   if ($resurl =~ m{^/adm/$match_domain/$match_username/\d+/smppg|bulletinboard$}) {
                       $incourse = 1;
                       if ($env{'form.forceedit'}) {
                           $forceview = 1;
                       } else {
                           $forceedit = 1;
                       }
                       $cfile = $resurl;
                   } elsif (($resurl eq '/res/lib/templates/simpleproblem.problem')) {
                       $incourse = 1;
                       $cfile = $resurl.'/smpedit';
                   } elsif ($resurl =~ /ext/) {
                       $incourse = 1;
                       # is external
                   }
               } elsif ($resurl eq '/res/lib/templates/simpleproblem.problem/smpedit') {
                   my $template = '/res/lib/templates/simpleproblem.problem';
                   if (&is_on_map($template)) { 
                       $incourse = 1;
                       $forceview = 1;
                       $cfile = $template;
                 }                  }
             }              }
         }          }
         unless ($uploaded) {          if ($uploaded || $incourse) {
               $home=&homeserver($cnum,$cdom);
           } else {
             $file=~s{^(priv/$match_domain/$match_username)}{/$1};              $file=~s{^(priv/$match_domain/$match_username)}{/$1};
             $file=~s{^($match_domain/$match_username)}{/priv/$1};              $file=~s{^($match_domain/$match_username)}{/priv/$1};
             # Check that the user has permission to edit this resource              # Check that the user has permission to edit this resource
Line 2686  sub can_edit_resource { Line 2780  sub can_edit_resource {
                 $cfile=$file;                  $cfile=$file;
             }              }
         }          }
         if (($cfile ne '') && (($home ne '') && ($home ne 'no_host'))) {          if (($cfile ne '') && (!$incourse || $uploaded) && 
               (($home ne '') && ($home ne 'no_host'))) {
             my @ids=&current_machine_ids();              my @ids=&current_machine_ids();
             unless (grep(/^\Q$home\E$/,@ids)) {              unless (grep(/^\Q$home\E$/,@ids)) {
                 $switchserver=1;                  $switchserver=1;
             }              }
         }          }
     }      }
     return ($cfile,$home,$switchserver,$uploaded);      return ($cfile,$home,$switchserver,$forceedit,$forceview);
 }  }
   
 sub is_course_upload {  sub is_course_upload {
Line 2707  sub is_course_upload { Line 2802  sub is_course_upload {
     return;      return;
 }  }
   
   sub in_course {
       my ($udom,$uname,$cdom,$cnum,$type,$hideprivileged) = @_;
       if ($hideprivileged) {
           my $skipuser;
           if (&privileged($uname,$udom)) {
               $skipuser = 1;
               my %coursehash = &coursedescription($cdom.'_'.$cnum);
               if ($coursehash{'nothideprivileged'}) {
                   foreach my $item (split(/\s*\,\s*/,$coursehash{'nothideprivileged'})) {
                       my $user;
                       if ($item =~ /:/) {
                           $user = $item;
                       } else {
                           $user = join(':',split(/[\@]/,$item));
                       }
                       if ($user eq $uname.':'.$udom) {
                           undef($skipuser);
                           last;
                       }
                   }
               }
               if ($skipuser) {
                   return 0;
               }
           }
       }
       $type ||= 'any';
       if (!defined($cdom) || !defined($cnum)) {
           my $cid  = $env{'request.course.id'};
           $cdom = $env{'course.'.$cid.'.domain'};
           $cnum = $env{'course.'.$cid.'.num'};
       }
       my $typesref;
       if (($type eq 'any') || ($type eq 'all')) {
           $typesref = ['active','previous','future'];
       } elsif ($type eq 'previous' || $type eq 'future') {
           $typesref = [$type];
       }
       my %roles = &get_my_roles($uname,$udom,'userroles',
                                 $typesref,undef,[$cdom]);
       my ($tmp) = keys(%roles);
       return 0 if ($tmp =~ /^(con_lost|error|no_such_host)/i);
       my @course_roles = grep(/^\Q$cnum\E:\Q$cdom\E:/, keys(%roles));
       if (@course_roles > 0) {
           return 1;
       }
       return 0;
   }
   
 # --------- File operations in /home/httpd/html/userfiles/$domain/1/2/3/$course  # --------- File operations in /home/httpd/html/userfiles/$domain/1/2/3/$course
 # input: action, courseID, current domain, intended  # input: action, courseID, current domain, intended
 #        path to file, source of file, instruction to parse file for objects,  #        path to file, source of file, instruction to parse file for objects,
Line 12116  of role statuses (active, future or prev Line 12260  of role statuses (active, future or prev
 to restrict the list of roles reported. If no array ref is   to restrict the list of roles reported. If no array ref is 
 provided for types, will default to return only active roles.  provided for types, will default to return only active roles.
   
   =item *
   
   in_course($udom,$uname,$cdom,$cnum,$type,$hideprivileged) : determine if
   user: $uname:$udom has a role in the course: $cdom_$cnum. 
   
   Additional optional arguments are: $type (if role checking is to be restricted 
   to certain user status types -- previous (expired roles), active (currently
   available roles) or future (roles available in the future), and
   $hideprivileged -- if true will not report course roles for users who
   have active Domain Coordinator or Super User roles.
   
 =back  =back
   
 =head2 User Modification  =head2 User Modification
Line 12318  data base, returning a hash that is keye Line 12473  data base, returning a hash that is keye
 values that are the resource value.  I believe that the timestamps and  values that are the resource value.  I believe that the timestamps and
 versions are also returned.  versions are also returned.
   
   
 =back  =back
   
 =head2 Course Modification  =head2 Course Modification
Line 12479  expirespread($uname,$udom,$stype,$usymb) Line 12633  expirespread($uname,$udom,$stype,$usymb)
 devalidate($symb) : devalidate temporary spreadsheet calculations,  devalidate($symb) : devalidate temporary spreadsheet calculations,
 forcing spreadsheet to reevaluate the resource scores next time.  forcing spreadsheet to reevaluate the resource scores next time.
   
   =item * 
   
   can_edit_resource($file,$cnum,$cdom,$resurl,$symb,$group) : determine if current user can edit a particular resource,
   when viewing in course context.
   
    input: six args -- filename (decluttered), course number, course domain,
                       url, symb (if registered) and group (if this is a 
                       group item -- e.g., bulletin board, group page etc.).
   
    output: array of five scalars --
            $cfile -- url for file editing if editable on current server
            $home -- homeserver of resource (i.e., for author if published,
                                             or course if uploaded.).
            $switchserver --  1 if server switch will be needed.
            $forceedit -- 1 if icon/link should be to go to edit mode 
            $forceview -- 1 if icon/link should be to go to view mode
   
   =item *
   
   is_course_upload($file,$cnum,$cdom)
   
   Used in course context to determine if current file was uploaded to 
   the course (i.e., would be found in /userfiles/docs on the course's 
   homeserver.
   
     input: 3 args -- filename (decluttered), course number and course domain.
     output: boolean -- 1 if file was uploaded.
   
 =back  =back
   
 =head2 Storing/Retreiving Data  =head2 Storing/Retreiving Data
Removed from v.1.1193  
changed lines
  Added in v.1.1196

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