--- rat/lonuserstate.pm 2021/04/29 14:54:36 1.163 +++ rat/lonuserstate.pm 2022/10/04 20:39:57 1.169 @@ -1,7 +1,7 @@ # The LearningOnline Network with CAPA # Construct and maintain state and binary representation of course for user # -# $Id: lonuserstate.pm,v 1.163 2021/04/29 14:54:36 raeburn Exp $ +# $Id: lonuserstate.pm,v 1.169 2022/10/04 20:39:57 raeburn Exp $ # # Copyright Michigan State University Board of Trustees # @@ -62,7 +62,7 @@ my %randomorder; # maps to order content my %randomizationcode; # code used to grade folder for bubblesheet exam my %encurl; # URLs in this folder are supposed to be encrypted my %hiddenurl; # this URL (or complete folder) is supposed to be hidden -my %deeplinkonly; # this URL (or complete folder) is deep-link only +my %deeplinkout; # this URL (or complete folder) unavailable in deep-link session my %rescount; # count of unhidden items in each map my %mapcount; # count of unhidden maps in each map @@ -199,6 +199,10 @@ sub loadmap { $errtext.= '
' .&mt('Map not loaded: The file [_1] does not exist.', "$fn"); + $hash{'map_type_'.$lpc}='none'; + if (&is_advanced($courseid)) { + $errtext .= &error_detail($parent_rid,$courseid,$ispage,$uri); + } return; } @@ -389,6 +393,233 @@ sub is_advanced { return $advanced; } +sub error_detail { + my ($parent_rid,$courseid,$ispage,$uri) = @_; + my $errinfo; + if ($courseid) { + my $courseurl = &Apache::lonnet::courseid_to_courseurl($courseid); + if ($parent_rid =~ /^(\d+)\.(\d+)$/) { + my ($parent_pc,$parent_id) = ($1,$2); + my ($parent_type,$published,$uploaded,$canedit,$role,$switchserver,$audom,$auname, + $editfile,$filerole,$fileswitch,$audomfile,$aunamefile); + if (($parent_pc eq '0') && ($hash{'map_id_1'} =~ m{^/res/($match_domain)/($match_username)/.+\.(sequence|page)$})) { + ($audomfile,$aunamefile) = ($1,$2); + ($editfile,$filerole,$fileswitch) = &canedit_published($audomfile,$aunamefile); + if ($fileswitch) { + unless ((&Apache::lonnet::will_trust('othcoau',$env{'user.domain'},$audomfile)) && + (&Apache::lonnet::will_trust('coaurem',$audomfile,$env{'user.domain'}))) { + undef($editfile); + } + } + $errinfo = &mt('Top level published sequence file is missing.'); + } else { + if ($parent_pc eq '1') { + if ($hash{'map_id_1'} eq "/uploaded$courseurl/default.sequence") { + $uploaded = 1; + if (&Apache::lonnet::allowed('mdc',$courseid)) { + $canedit = 1; + } + $errinfo = &mt('Map is referenced in the top level ([_1]Main Content[_2]) folder.', + '',''); + } elsif ($hash{'map_id_1'} =~ m{^/res/($match_domain)/($match_username)/.+\.(sequence|page)$}) { + ($audom,$auname) = ($1,$2); + ($canedit,$role,$switchserver) = &canedit_published($audom,$auname); + $published = 1; + $errinfo = &mt('Map is referenced in the top level published sequence file.'); + } + } else { + if ($hash{'map_id_'.$parent_pc} =~ m{^\Q/uploaded$courseurl/default_\E\d+\.(sequence|page)$}) { + $uploaded = 1; + if (&Apache::lonnet::allowed('mdc',$courseid)) { + $canedit = 1; + } + } elsif ($hash{'map_id_'.$parent_pc} =~ m{^/res/($match_domain)/($match_username)/.+\.(sequence|page)$}) { + ($audom,$auname) = ($1,$2); + ($canedit,$role,$switchserver) = &canedit_published($audom,$auname); + $published = 1; + } + if (exists($hash{'ids_'.$hash{'map_id_'.$parent_pc}})) { + $parent_type = $hash{'map_type_'.$parent_pc}; + if ($published) { + $errinfo = &mt("Map is referenced in the published $parent_type file: [_1].", + ''.$hash{'map_id_'.$parent_pc}.''); + } else { + my $title = $hash{'title_'.$hash{'ids_'.$hash{'map_id_'.$parent_pc}}}; + if ($title ne '') { + my $mapdesc; + if ($parent_type eq 'sequence') { + $mapdesc = 'folder'; + } else { + $mapdesc = 'composite page'; + } + $errinfo = &mt("Map is referenced in the $mapdesc named: [_1].", + ''.$title.''); + } + my @containers = split(/,/,$hash{'map_hierarchy_'.$parent_pc}); + shift(@containers); + my $folderpath; + foreach my $id (@containers) { + my $name; + if ($id == 1) { + $name = &mt('Main Content'); + } elsif ($hash{'title_'.$hash{'ids_'.$hash{'map_id_'.$id}}} ne '') { + $name = $hash{'title_'.$hash{'ids_'.$hash{'map_id_'.$id}}}; + } + if ($name ne '') { + $folderpath .= $name.' » '; + } + } + if ($title eq '') { + $folderpath =~ s/\Q » \E$//; + } else { + $folderpath .= $title; + } + if ($folderpath) { + $errinfo .= '
'.&mt('Hierarchy is: [_1]', + ''.$folderpath.''); + } + } + } + } + if ($uri =~ m{^/res/($match_domain)/($match_username)/.+\.(sequence|page)$}) { + ($audomfile,$aunamefile) = ($1,$2); + ($editfile,$filerole,$fileswitch) = &canedit_published($audomfile,$aunamefile); + if ($fileswitch) { + unless ((&Apache::lonnet::will_trust('othcoau',$env{'user.domain'},$audomfile)) && + (&Apache::lonnet::will_trust('coaurem',$audomfile,$env{'user.domain'}))) { + undef($editfile); + } + } + } + } + if ($errinfo) { + $errinfo = '
'.$errinfo.'
'; + } + if ($editfile) { + if ($errinfo ne '') { + $errinfo .= '
'; + } + if ($canedit) { + $errinfo .= &mt('One way to rectify this problem is to create and publish the missing file'); + } else { + $errinfo .= &mt('To rectify this problem, create and publish the missing file'); + } + if ($fileswitch) { + my $rolename = &Apache::lonnet::plaintext($filerole); + my $rolecode; + if ($filerole eq 'au') { + $rolecode = 'au./'.$audomfile.'/'; + } else { + $rolecode = $filerole.'./'.$audomfile.'/'.$aunamefile; + } + $errinfo .= '.
'.&mt('You will need to [_1]switch server[_2].', + '',''); + } else { + my $fileurl = $uri; + $fileurl =~s{^/res/}{/priv/}; + $errinfo .= ': '.&mt('Create the missing file').''; + } + } + if ($canedit) { + if ($errinfo ne '') { + $errinfo .= '
'; + } + if ($published) { + my $rolename = &Apache::lonnet::plaintext($role); + my $rolecode; + if ($role eq 'au') { + $rolecode = 'au./'.$audom.'/'; + } else { + $rolecode = $role.'./'.$audom.'/'.$auname; + } + if ($editfile) { + $errinfo .= &mt('Another way is to edit the parent map to remove the reference to the missing file'); + } else { + $errinfo .= &mt('To rectify this problem edit the parent map to remove the reference to the missing file'); + } + if ($switchserver) { + $errinfo .= '.
'; + if ((&Apache::lonnet::will_trust('othcoau',$env{'user.domain'},$audom)) && + (&Apache::lonnet::will_trust('coaurem',$audom,$env{'user.domain'}))) { + $errinfo .= &mt('You will need to [_1]switch server[_2].', + '',''); + } else { + $errinfo .= &mt('Session switch required but prohibited.'); + } + } else { + my $mapurl = $hash{'map_id_'.$parent_pc}; + $mapurl =~s{^/res/}{/priv/}; + $errinfo .= ': '.&mt('Edit the map').''; + } + } elsif ($uploaded && $courseid) { + my ($dest,$linktext); + my $crstype = &Apache::loncommon::course_type($courseid); + if ($parent_pc eq '1') { + $dest = '/adm/coursedocs?folderpath='.&escape('default&Main%20Content:::::'); + $linktext = &mt('Edit Folder'); + } elsif ($hash{'ids_'.$hash{'map_id_'.$parent_pc}} =~ /^(\d+)\.(\d+)$/) { + my ($editmap,$editidx) = ($1,$2); + my $symb = &Apache::lonnet::encode_symb($hash{'map_id_'.$editmap}, + $editidx,$hash{'map_id_'.$parent_pc}); + $dest = '/adm/coursedocs?command=directnav&symb='.&escape($symb); + if ($parent_type eq 'sequence') { + $linktext = &mt('Edit Folder'); + } else { + $linktext = &mt('Edit Composite Page'); + } + } else { + $dest = '/adm/coursedocs?folderpath='.&escape('default&Main%20Content:::::'); + $linktext = &mt("Edit $crstype"); + } + if ($editfile) { + $errinfo .= &mt("Another way is to use the $crstype Editor to delete the reference to the missing file"); + } else { + $errinfo .= &mt("To rectify this problem use the $crstype Editor to delete the reference to the missing file"); + } + $errinfo .= ': '.$linktext.''; + } + $errinfo .= '
'; + } + } + } + return $errinfo; +} + +sub canedit_published { + my ($audom,$auname) = @_; + my ($canedit,$role,$switchserver); + my $now = time; + if (($auname eq $env{'user.name'}) && ($audom eq $env{'user.domain'})) { + if (exists($env{"user.role.au./$audom/"})) { + my ($start,$end) = split(/\./,$env{"user.role.au./$audom/"}); + unless (($end && $end < $now) || ($start && $start > $now)) { + $canedit = 1; + $role = 'au'; + } + } + } + unless ($canedit) { + foreach my $possrole ('ca','aa') { + if (exists($env{"user.role.$possrole./$audom/$auname"})) { + my ($end,$start) = split(/\./,$env{"user.role.$possrole./$audom/$auname"}); + unless (($end && $end < time) || ($start && $start > time)) { + $canedit = 1; + $role = $possrole; + last; + } + } + } + } + if ($canedit) { + my $auhome = &Apache::lonnet::homeserver($auname,$audom); + my @ids=&Apache::lonnet::current_machine_ids(); + if (($auhome ne 'no_host') && (!grep(/^\Q$auhome\E$/,@ids))) { + $switchserver = $auhome; + } + } + return ($canedit,$role,$switchserver); +} + # -------------------------------------------------------------------- Resource # # Parses a resource tag to produce the value to push into the @@ -905,7 +1136,7 @@ sub simplify { # new value indicating how far the map has been traversed (the sofar). # sub traceroute { - my ($sofar,$rid,$beenhere,$encflag,$hdnflag)=@_; + my ($sofar,$rid,$beenhere,$encflag,$hdnflag,$cid)=@_; my $newsofar=$sofar=simplify($sofar); unless ($beenhere=~/\&\Q$rid\E\&/) { @@ -928,13 +1159,29 @@ sub traceroute { && ($hash{'src_'.$rid}!~/\.sequence$/)) { $retfrid=$rid; } - my @deeplink=&Apache::lonnet::EXT('resource.0.deeplink',$symb); - unless ((@deeplink == 0) || ($deeplink[0] eq 'full')) { - $deeplinkonly{$rid}=join(':',@deeplink); - if ($deeplink[1] eq 'map') { - my $parent = (split(/\,/,$hash{'map_hierarchy_'.$mapid}))[-1]; - $deeplinkonly{"$parent.$mapid"}=$deeplinkonly{$rid}; + + my (@deeplink,@recurseup); + if ($hash{'is_map_'.$rid}) { + my ($cdom,$cnum) = split(/_/,$cid); + my $mapsrc = $hash{'src_'.$rid}; + my $map_pc = $hash{'map_pc_'.$mapsrc}; + my @pcs = split(/,/,$hash{'map_hierarchy_'.$map_pc}); + shift(@pcs); + @recurseup = map { &Apache::lonnet::declutter($hash{'map_id_'.$_}) } reverse(@pcs); + my $mapname = &Apache::lonnet::declutter(&Apache::lonnet::deversion($mapsrc)); + my $deeplinkval = &get_mapparam($env{'user.name'},$env{'user.domain'},$cnum,$cdom, + $rid,$mapname,'0.deeplink',\@recurseup); + if ($deeplinkval ne '') { + @deeplink = ($deeplinkval,'map'); } + } else { + my @pcs = split(/,/,$hash{'map_hierarchy_'.$mapid}); + shift(@pcs); + @recurseup = map { &Apache::lonnet::declutter($hash{'map_id_'.$_}) } reverse(@pcs); + @deeplink = &Apache::lonnet::EXT('resource.0.deeplink',$symb,'','','','',$cid,\@recurseup); + } + unless (@deeplink < 2) { + $hash{'deeplinkonly_'.$rid}=join(':',map { &escape($_); } @deeplink); } if (defined($hash{'conditions_'.$rid})) { @@ -958,7 +1205,8 @@ sub traceroute { $hash{'map_start_'.$hash{'src_'.$rid}}, $beenhere, $encflag || $encurl{$rid}, - $hdnflag || $hiddenurl{$rid}); + $hdnflag || $hiddenurl{$rid}, + $cid); } } @@ -985,7 +1233,7 @@ sub traceroute { } # Recurse to resoruces that have to's to us. $newsofar=&traceroute($further,$hash{'goesto_'.$id},$beenhere, - $encflag,$hdnflag); + $encflag,$hdnflag,$cid); } } } @@ -1182,17 +1430,34 @@ sub hiddenurls { } } +sub deeplinkouts { + my $deeplinkoutentry; + foreach my $rid (keys(%deeplinkout)) { + $hash{'deeplinkout_'.$rid}=1; + my ($mapid,$resid)=split(/\./,$rid); + $deeplinkoutentry.='&'. + &Apache::lonnet::encode_symb($hash{'map_id_'.$mapid},$resid, + $hash{'src_'.$rid}).'&'; + } +# --------------------------------------- append deeplinkout entry to environment + if ($deeplinkoutentry) { + &Apache::lonnet::appenv({'acc.deeplinkout' => $deeplinkoutentry}); + } +} + # -------------------------------------- populate big hash with map breadcrumbs # Create map_breadcrumbs_$pc from map_hierarchy_$pc by omitting intermediate # maps not shown in Course Contents table. sub mapcrumbs { + my ($cid) = @_; foreach my $key (keys(%rescount)) { if ($hash{'map_hierarchy_'.$key}) { my $skipnext = 0; foreach my $id (split(/,/,$hash{'map_hierarchy_'.$key}),$key) { - unless ($skipnext) { + my $rid = $hash{'ids_'.$hash{'map_id_'.$id}}; + unless (($skipnext) || (!&is_advanced($cid) && $hash{'deeplinkout_'.$rid})) { $hash{'map_breadcrumbs_'.$key} .= "$id,"; } unless (($id == 0) || ($id == 1)) { @@ -1251,7 +1516,7 @@ sub readmap { undef %randomizationcode; undef %hiddenurl; undef %encurl; - undef %deeplinkonly; + undef %deeplinkout; undef %rescount; undef %mapcount; $retfrid=''; @@ -1400,7 +1665,7 @@ sub readmap { undef %randomizationcode; undef %hiddenurl; undef %encurl; - undef %deeplinkonly; + undef %deeplinkout; undef %rescount; undef %mapcount; $errtext=''; @@ -1509,7 +1774,6 @@ sub build_tmp_hashes { # Load the map.. note that loadmap may implicitly recurse if the map contains # sub-maps. - &loadmap($uri,'0.0',$short); # The code below only executes if there is a starting point for the map> @@ -1522,10 +1786,9 @@ sub build_tmp_hashes { "request.course.uri" => $uri, "request.course.tied" => time}); $env{'request.course.id'}=$short; - &traceroute('0',$hash{'map_start_'.$uri},'&'); + &traceroute('0',$hash{'map_start_'.$uri},'&','','',$short); &accinit($uri,$short,$fn); &hiddenurls(); - &mapcrumbs(); } $errtext .= &get_mapalias_errors(); # ------------------------------------------------------- Put versions into src @@ -1543,10 +1806,6 @@ sub build_tmp_hashes { # $hash{'src_'.$id}=&Apache::lonenc::encrypted($hash{'src_'.$id}); $hash{'encrypted_'.$id}=1; } -# ------------------------------------------------------------ Deep-linked URLs - foreach my $id (keys(%deeplinkonly)) { - $hash{'deeplinkonly_'.$id}=$deeplinkonly{$id}; - } # ----------------------------------------------- Close hashes to finally store # --------------------------------- Routine must pass this point, no early outs $hash{'first_rid'}=$retfrid; @@ -1569,6 +1828,92 @@ sub build_tmp_hashes { "Could not write statemap $fn for $uri."); } } + + # Was initial access via a deep-link? + my ($cdom,$cnum) = split(/_/,$short); + if (($cdom ne '') && ($env{'request.deeplink.login'} ne '')) { + my $deeplink_symb = &Apache::loncommon::deeplink_login_symb($cnum,$cdom); + if ($deeplink_symb) { + my ($loginrid,$deeplink_login_pc,$login_hierarchy); + my ($map,$resid,$url) = &Apache::lonnet::decode_symb($deeplink_symb); + $loginrid = $hash{'map_pc_'.&Apache::lonnet::clutter($map)}.'.'.$resid; + if ($deeplink_symb =~ /\.(page|sequence)$/) { + $deeplink_login_pc = $hash{'map_pc_'.&Apache::lonnet::clutter($url)}; + } else { + $deeplink_login_pc = $hash{'map_pc_'.&Apache::lonnet::clutter($map)}; + } + my $deeplink; + if ($hash{'deeplinkonly_'.$loginrid} ne '') { + my @deeplinkinfo = map { &unescape($_); } split(/:/,$hash{'deeplinkonly_'.$loginrid}); + unless (@deeplinkinfo < 2) { + $deeplink = $deeplinkinfo[0]; + } + } + if ($deeplink) { + my $disallow; + my ($state,$others,$listed,$scope,$protect) = split(/,/,$deeplink); + if (($protect ne 'none') && ($protect ne '')) { + my ($acctype,$item) = split(/:/,$protect); + if ($acctype =~ /lti(c|d)$/) { + unless ($env{'request.linkprot'} eq $item.$1.':'.$env{'request.deeplink.login'}) { + $disallow = 1; + } + } elsif ($acctype eq 'key') { + unless ($env{'request.linkkey'} eq $item) { + $disallow = 1; + } + } + } + if ($disallow) { + &Apache::lonnet::delenv('request.deeplink.login'); + if ($env{'request.deeplink.target'} ne '') { + &Apache::lonnet::delenv('request.deeplink.target'); + } + } else { + if ($others eq 'hide') { + my @recfolders; + if ($scope eq 'rec') { + foreach my $key (keys(%hash)) { + if ($key=~/^map_hierarchy_(\d+)$/) { + my $mpc = $1; + my @ids = split(/,/,$hash{$key}); + if (grep(/^$deeplink_login_pc$/,@ids)) { + my $idx; + foreach my $mapid (@ids) { + if ($idx) { + push(@recfolders,$mapid); + } elsif ($mapid == $deeplink_login_pc) { + push(@recfolders,$mapid); + $idx = $mapid; + } + } + push(@recfolders,$mpc); + } + } + } + } + foreach my $key (keys(%hash)) { + if ($key=~/^src_(.+)$/) { + my $rid = $1; + next if ($rid eq '0.0'); + next if ($rid eq $loginrid); + if ($scope ne 'res') { + my $mapid = (split(/\./,$rid))[0]; + next if ($mapid eq $deeplink_login_pc); + if ($scope eq 'rec') { + next if (grep(/^$mapid$/,@recfolders)); + } + } + $deeplinkout{$rid} = 1; + } + } + } + } + &deeplinkouts(); + } + } + } + &mapcrumbs(); return $gotstate; } @@ -1630,6 +1975,181 @@ sub evalstate { return $state; } +sub get_mapparam { + my ($uname,$udom,$cnum,$cdom,$rid,$mapname,$what,$recurseupref) = @_; + unless ($mapname) { return; } + +# ------------------------------------------------- Get coursedata (if present) + my $courseopt=&Apache::lonnet::get_courseresdata($cnum,$cdom); + if (!ref($courseopt)) { + undef($courseopt); + } + +# --------------------------------------------------- Get userdata (if present) + my $useropt=&Apache::lonnet::get_userresdata($uname,$udom); + if (!ref($useropt)) { + undef($useropt); + } + + my @recurseup; + if (ref($recurseupref) eq 'ARRAY') { + @recurseup = @{$recurseupref}; + } + + # Get the section if there is one. + + my $cid = $cdom.'_'.$cnum; + my $csec=$env{'request.course.sec'}; + my $cgroup=''; + my @cgrps=split(/:/,$env{'request.course.groups'}); + if (@cgrps > 0) { + @cgrps = sort(@cgrps); + $cgroup = $cgrps[0]; + } + + my $rwhat=$what; + $what=~s/^parameter\_//; + $what=~s/\_/\./; + + # Build the hash keys for the lookup: + + my $mapparm=$mapname.'___(all).'.$what; + my $recurseparm=$mapname.'___(rec).'.$what; + my $usercourseprefix=$cid; + + my $grplevelm = "$usercourseprefix.[$cgroup].$mapparm"; + my $seclevelm = "$usercourseprefix.[$csec].$mapparm"; + my $courselevelm = "$usercourseprefix.$mapparm"; + + my $grpleveli = "$usercourseprefix.[$cgroup].$recurseparm"; + my $secleveli = "$usercourseprefix.[$csec].$recurseparm"; + my $courseleveli = "$usercourseprefix.$recurseparm"; + + # Check per user + + if ($uname and defined($useropt)) { + if (defined($$useropt{$courselevelm})) { + return $$useropt{$courselevelm}; + } + if (defined($$useropt{$courseleveli})) { + return $$useropt{$courseleveli}; + } + foreach my $item (@recurseup) { + my $norecursechk=$usercourseprefix.'.'.$item.'___(all).'.$what; + if (defined($$useropt{$norecursechk})) { + if ($what =~ /\.(encrypturl|hiddenresource)$/) { + return $$useropt{$norecursechk}; + } else { + last; + } + } + my $recursechk=$usercourseprefix.'.'.$item.'___(rec).'.$what; + if (defined($$useropt{$recursechk})) { + return $$useropt{$recursechk}; + } + } + } + + # Check course -- group + + if ($cgroup ne '' and defined ($courseopt)) { + if (defined($$courseopt{$grplevelm})) { + return $$courseopt{$grplevelm}; + } + if (defined($$courseopt{$grpleveli})) { + return $$courseopt{$grpleveli}; + } + foreach my $item (@recurseup) { + my $norecursechk=$usercourseprefix.'.['.$cgroup.'].'.$item.'___(all).'.$what; + if (defined($$courseopt{$norecursechk})) { + if ($what =~ /\.(encrypturl|hiddenresource)$/) { + return $$courseopt{$norecursechk}; + } else { + last; + } + } + my $recursechk=$usercourseprefix.'.['.$cgroup.'].'.$item.'___(rec).'.$what; + if (defined($$courseopt{$recursechk})) { + return $$courseopt{$recursechk}; + } + } + } + + # Check course -- section + + if ($csec ne '' and defined($courseopt)) { + if (defined($$courseopt{$seclevelm})) { + return $$courseopt{$seclevelm}; + } + if (defined($$courseopt{$secleveli})) { + return $$courseopt{$secleveli}; + } + foreach my $item (@recurseup) { + my $norecursechk=$usercourseprefix.'.['.$csec.'].'.$item.'___(all).'.$what; + if (defined($$courseopt{$norecursechk})) { + if ($what =~ /\.(encrypturl|hiddenresource)$/) { + return $$courseopt{$norecursechk}; + } else { + last; + } + } + my $recursechk=$usercourseprefix.'.['.$csec.'].'.$item.'___(rec).'.$what; + if (defined($$courseopt{$recursechk})) { + return $$courseopt{$recursechk}; + } + } + } + + # Check the map parameters themselves: + + if ($hash{'param_'.$rid}) { + my @items = split(/\&/,$hash{'param_'.$rid}); + my $thisparm; + foreach my $item (@items) { + my ($esctype,$escname,$escvalue) = ($item =~ /^([^:]+):([^=]+)=(.*)$/); + my $name = &unescape($escname); + my $value = &unescape($escvalue); + if ($name eq $what) { + $thisparm = $value; + last; + } + } + if (defined($thisparm)) { + return $thisparm; + } + } + + # Additional course parameters: + + if (defined($courseopt)) { + if (defined($$courseopt{$courselevelm})) { + return $$courseopt{$courselevelm}; + } + + if (defined($$courseopt{$courseleveli})) { + return $$courseopt{$courseleveli}; + } + + if (@recurseup) { + foreach my $item (@recurseup) { + my $norecursechk=$usercourseprefix.'.'.$item.'___(all).'.$what; + if (defined($$courseopt{$norecursechk})) { + if ($what =~ /\.(encrypturl|hiddenresource)$/) { + return $$courseopt{$norecursechk}; + } else { + last; + } + } + my $recursechk=$usercourseprefix.'.'.$item.'___(rec).'.$what; + if (defined($$courseopt{$recursechk})) { + return $$courseopt{$recursechk}; + } + } + } + } + return undef; +} + # This block seems to have code to manage/detect doubly defined # aliases in maps.