--- loncom/interface/loncommon.pm 2015/02/25 19:22:24 1.1206 +++ loncom/interface/loncommon.pm 2020/10/01 10:16:33 1.1348 @@ -1,7 +1,7 @@ # The LearningOnline Network with CAPA # a pile of common routines # -# $Id: loncommon.pm,v 1.1206 2015/02/25 19:22:24 raeburn Exp $ +# $Id: loncommon.pm,v 1.1348 2020/10/01 10:16:33 raeburn Exp $ # # Copyright Michigan State University Board of Trustees # @@ -71,13 +71,23 @@ use Apache::lonuserutils(); use Apache::lonuserstate(); use Apache::courseclassifier(); use LONCAPA qw(:DEFAULT :match); +use LONCAPA::LWPReq; +use HTTP::Request; use DateTime::TimeZone; -use DateTime::Locale::Catalog; +use DateTime::Locale; +use Encode(); use Text::Aspell; use Authen::Captcha; use Captcha::reCAPTCHA; +use JSON::DWIW; use Crypt::DES; use DynaLoader; # for Crypt::DES version +use MIME::Lite; +use MIME::Types; +use File::Copy(); +use File::Path(); +use String::CRC32(); +use Short::URL(); # ---------------------------------------------- Designs use vars qw(%defaultdesign); @@ -193,7 +203,7 @@ BEGIN { { my $langtabfile = $Apache::lonnet::perlvar{'lonTabDir'}. '/language.tab'; - if ( open(my $fh,"<$langtabfile") ) { + if ( open(my $fh,'<',$langtabfile) ) { while (my $line = <$fh>) { next if ($line=~/^\#/); chomp($line); @@ -215,7 +225,7 @@ BEGIN { { my $copyrightfile = $Apache::lonnet::perlvar{'lonIncludes'}. '/copyright.tab'; - if ( open (my $fh,"<$copyrightfile") ) { + if ( open (my $fh,'<',$copyrightfile) ) { while (my $line = <$fh>) { next if ($line=~/^\#/); chomp($line); @@ -229,7 +239,7 @@ BEGIN { { my $sourcecopyrightfile = $Apache::lonnet::perlvar{'lonIncludes'}. '/source_copyright.tab'; - if ( open (my $fh,"<$sourcecopyrightfile") ) { + if ( open (my $fh,'<',$sourcecopyrightfile) ) { while (my $line = <$fh>) { next if ($line =~ /^\#/); chomp($line); @@ -243,7 +253,7 @@ BEGIN { # -------------------------------------------------------------- default domain designs my $designdir=$Apache::lonnet::perlvar{'lonTabDir'}.'/lonDomColors'; my $designfile = $designdir.'/default.tab'; - if ( open (my $fh,"<$designfile") ) { + if ( open (my $fh,'<',$designfile) ) { while (my $line = <$fh>) { next if ($line =~ /^\#/); chomp($line); @@ -257,12 +267,12 @@ BEGIN { { my $categoryfile = $Apache::lonnet::perlvar{'lonTabDir'}. '/filecategories.tab'; - if ( open (my $fh,"<$categoryfile") ) { + if ( open (my $fh,'<',$categoryfile) ) { while (my $line = <$fh>) { next if ($line =~ /^\#/); chomp($line); my ($extension,$category)=(split(/\s+/,$line,2)); - push @{$category_extensions{lc($category)}},$extension; + push(@{$category_extensions{lc($category)}},$extension); } close($fh); } @@ -272,7 +282,7 @@ BEGIN { { my $typesfile = $Apache::lonnet::perlvar{'lonTabDir'}. '/filetypes.tab'; - if ( open (my $fh,"<$typesfile") ) { + if ( open (my $fh,'<',$typesfile) ) { while (my $line = <$fh>) { next if ($line =~ /^\#/); chomp($line); @@ -425,7 +435,7 @@ sub studentbrowser_javascript { END # output the initial values for the selection lists - $result .= "\n"; my @order = sort(keys(%{$hashref})); if (ref($menuorder) eq 'ARRAY') { @order = @{$menuorder}; @@ -1275,9 +1306,13 @@ sub help_open_topic { } # Add the text + my $target = ' target="_top"'; + if (($env{'request.lti.login'}) && ($env{'request.lti.target'} eq 'iframe')) { + $target = ''; + } if ($text ne "") { $template.='' - .'' + .'' .$text.''; } @@ -1287,7 +1322,7 @@ sub help_open_topic { if ($imgid ne '') { $imgid = ' id="'.$imgid.'"'; } - $template.=' ' + $template.=' ' .''.&mt('Help: [_1]',$topic).'$text"; + "$text"; } # Add the graphic my $title = &mt('Report a Bug'); my $bugicon=&lonhttpdurl("/adm/lonMisc/smallBug.gif"); $template .= <<"ENDTEMPLATE"; - (Bug: $topic) + (Bug: $topic) ENDTEMPLATE if ($text ne '') { $template.='' }; return $template; @@ -1758,6 +1798,162 @@ RESIZE } sub colorfuleditor_js { + my $browse_or_search; + my $respath; + my ($cnum,$cdom) = &crsauthor_url(); + if ($cnum) { + $respath = "/res/$cdom/$cnum/"; + my %js_lt = &Apache::lonlocal::texthash( + sunm => 'Sub-directory name', + save => 'Save page to make this permanent', + ); + &js_escape(\%js_lt); + $browse_or_search = <<"END"; + + function toggleChooser(form,element,titleid,only,search) { + var disp = 'none'; + if (document.getElementById('chooser_'+element)) { + var curr = document.getElementById('chooser_'+element).style.display; + if (curr == 'none') { + disp='inline'; + if (form.elements['chooser_'+element].length) { + for (var i=0; i 1) { + window['select1'+element+'_changed'](); + } + } + } + document.getElementById('chooser_'+element+'_crsres').style.display = 'block'; + + } + if (document.getElementById('chooser_'+element+'_upload')) { + document.getElementById('chooser_'+element+'_upload').style.display = 'none'; + if (document.getElementById('uploadcrsres_'+element)) { + document.getElementById('uploadcrsres_'+element).value = ''; + } + } + return; + } + + function toggleCrsUpload(form,element,numcrsdirs) { + if (document.getElementById('chooser_'+element+'_crsres')) { + document.getElementById('chooser_'+element+'_crsres').style.display = 'none'; + } + if (document.getElementById('chooser_'+element+'_upload')) { + var curr = document.getElementById('chooser_'+element+'_upload').style.display; + if (curr == 'none') { + if (numcrsdirs) { + form.elements['crsauthorpath_'+element].selectedIndex = 0; + form.elements['newsubdir_'+element][0].checked = true; + toggleNewsubdir(form,element); + } + } + document.getElementById('chooser_'+element+'_upload').style.display = 'block'; + } + return; + } + + function toggleResImport(form,element) { + var choices = new Array('crsres','upload'); + for (var i=0; i // @@ -1940,7 +2136,7 @@ sub colorfuleditor_js { } } - +$browse_or_search // ]]> @@ -1992,6 +2188,133 @@ sub insert_folding_button { value=\"".&mt('Hide')."\" onclick=\"fold_box('$curDepth','$lastresource')\">"; } +sub crsauthor_url { + my ($url) = @_; + if ($url eq '') { + $url = $ENV{'REQUEST_URI'}; + } + my ($cnum,$cdom); + if ($env{'request.course.id'}) { + my ($audom,$auname) = ($url =~ m{^/priv/($match_domain)/($match_name)/}); + if ($audom ne '' && $auname ne '') { + if (($env{'course.'.$env{'request.course.id'}.'.num'} eq $auname) && + ($env{'course.'.$env{'request.course.id'}.'.domain'} eq $audom)) { + $cnum = $auname; + $cdom = $audom; + } + } + } + return ($cnum,$cdom); +} + +sub import_crsauthor_form { + my ($form,$firstselectname,$secondselectname,$onchangefirst,$only,$suffix,$disabled) = @_; + return (0) unless ($env{'request.course.id'}); + my $cnum = $env{'course.'.$env{'request.course.id'}.'.num'}; + my $cdom = $env{'course.'.$env{'request.course.id'}.'.domain'}; + my $crshome = $env{'course.'.$env{'request.course.id'}.'.home'}; + return (0) unless (($cnum ne '') && ($cdom ne '')); + my $londocroot = $Apache::lonnet::perlvar{'lonDocRoot'}; + my @ids=&Apache::lonnet::current_machine_ids(); + my ($output,$is_home,$relpath,%subdirs,%files,%selimport_menus); + + if (grep(/^\Q$crshome\E$/,@ids)) { + $is_home = 1; + } + $relpath = "/priv/$cdom/$cnum"; + &Apache::lonnet::recursedirs($is_home,'priv',$londocroot,$relpath,'',\%subdirs,\%files); + my %lt = &Apache::lonlocal::texthash ( + fnam => 'Filename', + dire => 'Directory', + ); + my $numdirs = scalar(keys(%files)); + my (%possexts,$singledir,@singledirfiles); + if ($only) { + map { $possexts{$_} = 1; } split(/\s*,\s*/,$only); + } + my (%nonemptydirs,$possdirs); + if ($numdirs > 1) { + my @order; + foreach my $key (sort { lc($a) cmp lc($b) } (keys(%files))) { + if (ref($files{$key}) eq 'HASH') { + my $shown = $key; + if ($key eq '') { + $shown = '/'; + } + my @ordered = (); + foreach my $file (sort { lc($a) cmp lc($b) } (keys(%{$files{$key}}))) { + next if ($file =~ /\.rights$/); + if ($only) { + my ($ext) = ($file =~ /\.([^.]+)$/); + unless ($possexts{lc($ext)}) { + next; + } + } + $selimport_menus{$key}->{'select2'}->{$file} = $file; + push(@ordered,$file); + } + if (@ordered) { + push(@order,$key); + $nonemptydirs{$key} = 1; + $selimport_menus{$key}->{'text'} = $shown; + $selimport_menus{$key}->{'default'} = ''; + $selimport_menus{$key}->{'select2'}->{''} = ''; + $selimport_menus{$key}->{'order'} = \@ordered; + } + } + } + $possdirs = scalar(keys(%nonemptydirs)); + if ($possdirs > 1) { + my @order = sort { lc($a) cmp lc($b) } (keys(%nonemptydirs)); + $output = $lt{'dire'}. + &linked_select_forms($form,'
'. + $lt{'fnam'},'', + $firstselectname,$secondselectname, + \%selimport_menus,\@order, + $onchangefirst,'',$suffix).'
'; + } elsif ($possdirs == 1) { + $singledir = (keys(%nonemptydirs))[0]; + if (ref($selimport_menus{$singledir}->{'order'}) eq 'ARRAY') { + @singledirfiles = @{$selimport_menus{$singledir}->{'order'}}; + } + delete($selimport_menus{$singledir}); + } + } elsif ($numdirs == 1) { + $singledir = (keys(%files))[0]; + foreach my $file (sort { lc($a) cmp lc($b) } (keys(%{$files{$singledir}}))) { + if ($only) { + my ($ext) = ($file =~ /\.([^.]+)$/); + unless ($possexts{lc($ext)}) { + next; + } + } else { + next if ($file =~ /\.rights$/); + } + push(@singledirfiles,$file); + } + if (@singledirfiles) { + $possdirs = 1; + } + } + if (($possdirs == 1) && (@singledirfiles)) { + my $showdir = $singledir; + if ($singledir eq '') { + $showdir = '/'; + } + $output = $lt{'dire'}. + '
'. + $lt{'fnam'}.'
'."\n"; + } + return ($possdirs,$output); +} + =pod =head1 Excel and CSV file utility routines @@ -2179,10 +2502,24 @@ sub create_text_file { # ------------------------------------------ sub domain_select { - my ($name,$value,$multiple)=@_; + my ($name,$value,$multiple,$incdoms,$excdoms)=@_; + my @possdoms; + if (ref($incdoms) eq 'ARRAY') { + @possdoms = @{$incdoms}; + } else { + @possdoms = &Apache::lonnet::all_domains(); + } + my %domains=map { $_ => $_.' '. &Apache::lonnet::domain($_,'description') - } &Apache::lonnet::all_domains(); + } @possdoms; + + if ((ref($excdoms) eq 'ARRAY') && (@{$excdoms} > 0)) { + foreach my $dom (@{$excdoms}) { + delete($domains{$dom}); + } + } + if ($multiple) { $domains{''}=&mt('Any domain'); $domains{'select_form_order'} = [sort {lc($a) cmp lc($b) } (keys(%domains))]; @@ -2251,12 +2588,15 @@ sub multiple_select_form { =pod -=item * &select_form($defdom,$name,$hashref,$onchange) +=item * &select_form($defdom,$name,$hashref,$onchange,$readonly) Returns a string containing a \n"; + my $disabled; + if ($readonly) { + $disabled = ' disabled="disabled"'; + } + my $selectform = " form to allow a user to select the domain to preform an operation in. @@ -2455,14 +2799,19 @@ The optional $incdoms is a reference to The optional $excdoms is a reference to an array of domains which will be excluded from the available options. +The optional $disabled argument, if true, adds the disabled attribute to the select tag. + =cut #------------------------------------------- sub select_dom_form { - my ($defdom,$name,$includeempty,$showdomdesc,$onchange,$incdoms,$excdoms) = @_; + my ($defdom,$name,$includeempty,$showdomdesc,$onchange,$incdoms,$excdoms,$disabled) = @_; if ($onchange) { $onchange = ' onchange="'.$onchange.'"'; } + if ($disabled) { + $disabled = ' disabled="disabled"'; + } my (@domains,%exclude); if (ref($incdoms) eq 'ARRAY') { @domains = sort {lc($a) cmp lc($b)} (@{$incdoms}); @@ -2473,7 +2822,7 @@ sub select_dom_form { if (ref($excdoms) eq 'ARRAY') { map { $exclude{$_} = 1; } @{$excdoms}; } - my $selectdomain = "\n"; foreach my $dom (@domains) { next if ($exclude{$dom}); $selectdomain.="'. ''; my $depth = 1; push(@path,$parent); - $table .= &assign_category_rows($itemcount,\@cats,$depth,$parent,\@path,\@currcategories); + $table .= &assign_category_rows($itemcount,\@cats,$depth,$parent,\@path,\@currcategories,$disabled); pop(@path); $table .= ''; $itemcount ++; @@ -14016,12 +15637,15 @@ path - Array containing all categories b currcategories - reference to array of current categories assigned to the course +disabled - scalar (optional) contains disabled="disabled" if input elements are + to be readonly (e.g., Domain Helpdesk role viewing course settings). + Returns: $output (markup to be displayed). =cut sub assign_category_rows { - my ($itemcount,$cats,$depth,$parent,$path,$currcategories) = @_; + my ($itemcount,$cats,$depth,$parent,$path,$currcategories,$disabled) = @_; my ($text,$name,$item,$chgstr); if (ref($cats) eq 'ARRAY') { my $maxdepth = scalar(@{$cats}); @@ -14044,12 +15668,12 @@ sub assign_category_rows { } $text .= ''. + $item.'"'.$checked.$disabled.' />'.$name.''. ''. ''; if (ref($path) eq 'ARRAY') { push(@{$path},$name); - $text .= &assign_category_rows($itemcount,$cats,$deeper,$name,$path,$currcategories); + $text .= &assign_category_rows($itemcount,$cats,$deeper,$name,$path,$currcategories,$disabled); pop(@{$path}); } $text .= ''; @@ -14260,7 +15884,8 @@ sub check_clone { my $cloneid='/'.$args->{'clonedomain'}.'/'.$args->{'clonecourse'}; my ($clonecrsudom,$clonecrsunum)= &LONCAPA::split_courseid($cloneid); my $clonehome=&Apache::lonnet::homeserver($clonecrsunum,$clonecrsudom); - my $clonemsg; + my $clonetitle; + my @clonemsg; my $can_clone = 0; my $lctype = lc($args->{'crstype'}); if ($lctype ne 'community') { @@ -14268,59 +15893,154 @@ sub check_clone { } if ($clonehome eq 'no_host') { if ($args->{'crstype'} eq 'Community') { - $clonemsg = &mt('No new community created.').$linefeed.&mt('A new community could not be cloned from the specified original - [_1] - because it is a non-existent community.',$args->{'clonecourse'}.':'.$args->{'clonedomain'}); + push(@clonemsg,({ + mt => 'No new community created.', + args => [], + }, + { + mt => 'A new community could not be cloned from the specified original - [_1] - because it is a non-existent community.', + args => [$args->{'clonedomain'}.':'.$args->{'clonedomain'}], + })); } else { - $clonemsg = &mt('No new course created.').$linefeed.&mt('A new course could not be cloned from the specified original - [_1] - because it is a non-existent course.',$args->{'clonecourse'}.':'.$args->{'clonedomain'}); - } + push(@clonemsg,({ + mt => 'No new course created.', + args => [], + }, + { + mt => 'A new course could not be cloned from the specified original - [_1] - because it is a non-existent course.', + args => [$args->{'clonecourse'}.':'.$args->{'clonedomain'}], + })); + } } else { my %clonedesc = &Apache::lonnet::coursedescription($cloneid,{'one_time' => 1}); + $clonetitle = $clonedesc{'description'}; if ($args->{'crstype'} eq 'Community') { if ($clonedesc{'type'} ne 'Community') { - $clonemsg = &mt('No new community created.').$linefeed.&mt('A new community could not be cloned from the specified original - [_1] - because it is a course not a community.',$args->{'clonecourse'}.':'.$args->{'clonedomain'}); - return ($can_clone, $clonemsg, $cloneid, $clonehome); + push(@clonemsg,({ + mt => 'No new community created.', + args => [], + }, + { + mt => 'A new community could not be cloned from the specified original - [_1] - because it is a course not a community.', + args => [$args->{'clonecourse'}.':'.$args->{'clonedomain'}], + })); + return ($can_clone,\@clonemsg,$cloneid,$clonehome); } } - if (($env{'request.role.domain'} eq $args->{'clonedomain'}) && + if (($env{'request.role.domain'} eq $args->{'clonedomain'}) && (&Apache::lonnet::allowed('ccc',$env{'request.role.domain'}))) { $can_clone = 1; } else { - my %clonehash = &Apache::lonnet::get('environment',['cloners'], + my %clonehash = &Apache::lonnet::get('environment',['cloners','internal.coursecode'], $args->{'clonedomain'},$args->{'clonecourse'}); - my @cloners = split(/,/,$clonehash{'cloners'}); - if (grep(/^\*$/,@cloners)) { - $can_clone = 1; - } elsif (grep(/^\*\:\Q$args->{'ccdomain'}\E$/,@cloners)) { - $can_clone = 1; + if ($clonehash{'cloners'} eq '') { + my %domdefs = &Apache::lonnet::get_domain_defaults($args->{'course_domain'}); + if ($domdefs{'canclone'}) { + unless ($domdefs{'canclone'} eq 'none') { + if ($domdefs{'canclone'} eq 'domain') { + if ($args->{'ccdomain'} eq $args->{'clonedomain'}) { + $can_clone = 1; + } + } elsif (($clonehash{'internal.coursecode'}) && ($args->{'crscode'}) && + ($args->{'clonedomain'} eq $args->{'course_domain'})) { + if (&Apache::lonnet::default_instcode_cloning($args->{'clonedomain'},$domdefs{'canclone'}, + $clonehash{'internal.coursecode'},$args->{'crscode'})) { + $can_clone = 1; + } + } + } + } } else { + my @cloners = split(/,/,$clonehash{'cloners'}); + if (grep(/^\*$/,@cloners)) { + $can_clone = 1; + } elsif (grep(/^\*\:\Q$args->{'ccdomain'}\E$/,@cloners)) { + $can_clone = 1; + } elsif (grep(/^\Q$args->{'ccuname'}\E:\Q$args->{'ccdomain'}\E$/,@cloners)) { + $can_clone = 1; + } + unless ($can_clone) { + if (($clonehash{'internal.coursecode'}) && ($args->{'crscode'}) && + ($args->{'clonedomain'} eq $args->{'course_domain'})) { + my (%gotdomdefaults,%gotcodedefaults); + foreach my $cloner (@cloners) { + if (($cloner ne '*') && ($cloner !~ /^\*\:$match_domain$/) && + ($cloner !~ /^$match_username\:$match_domain$/) && ($cloner ne '')) { + my (%codedefaults,@code_order); + if (ref($gotcodedefaults{$args->{'clonedomain'}}) eq 'HASH') { + if (ref($gotcodedefaults{$args->{'clonedomain'}}{'defaults'}) eq 'HASH') { + %codedefaults = %{$gotcodedefaults{$args->{'clonedomain'}}{'defaults'}}; + } + if (ref($gotcodedefaults{$args->{'clonedomain'}}{'order'}) eq 'ARRAY') { + @code_order = @{$gotcodedefaults{$args->{'clonedomain'}}{'order'}}; + } + } else { + &Apache::lonnet::auto_instcode_defaults($args->{'clonedomain'}, + \%codedefaults, + \@code_order); + $gotcodedefaults{$args->{'clonedomain'}}{'defaults'} = \%codedefaults; + $gotcodedefaults{$args->{'clonedomain'}}{'order'} = \@code_order; + } + if (@code_order > 0) { + if (&Apache::lonnet::check_instcode_cloning(\%codedefaults,\@code_order, + $cloner,$clonehash{'internal.coursecode'}, + $args->{'crscode'})) { + $can_clone = 1; + last; + } + } + } + } + } + } + } + unless ($can_clone) { my $ccrole = 'cc'; if ($args->{'crstype'} eq 'Community') { $ccrole = 'co'; } my %roleshash = &Apache::lonnet::get_my_roles($args->{'ccuname'}, - $args->{'ccdomain'}, - 'userroles',['active'],[$ccrole], - [$args->{'clonedomain'}]); - if (($roleshash{$args->{'clonecourse'}.':'.$args->{'clonedomain'}.':'.$ccrole}) || (grep(/^\Q$args->{'ccuname'}\E:\Q$args->{'ccdomain'}\E$/,@cloners))) { + $args->{'ccdomain'}, + 'userroles',['active'],[$ccrole], + [$args->{'clonedomain'}]); + if ($roleshash{$args->{'clonecourse'}.':'.$args->{'clonedomain'}.':'.$ccrole}) { $can_clone = 1; - } elsif (&Apache::lonnet::is_course_owner($args->{'clonedomain'},$args->{'clonecourse'},$args->{'ccuname'},$args->{'ccdomain'})) { + } elsif (&Apache::lonnet::is_course_owner($args->{'clonedomain'},$args->{'clonecourse'}, + $args->{'ccuname'},$args->{'ccdomain'})) { $can_clone = 1; + } + } + unless ($can_clone) { + if ($args->{'crstype'} eq 'Community') { + push(@clonemsg,({ + mt => 'No new community created.', + args => [], + }, + { + mt => 'The new community could not be cloned from the existing community because the new community owner ([_1]) does not have cloning rights in the existing community ([_2]).', + args => [$args->{'ccuname'}.':'.$args->{'ccdomain'},$clonedesc{'description'}], + })); } else { - if ($args->{'crstype'} eq 'Community') { - $clonemsg = &mt('No new community created.').$linefeed.&mt('The new community could not be cloned from the existing community because the new community owner ([_1]) does not have cloning rights in the existing community ([_2]).',$args->{'ccuname'}.':'.$args->{'ccdomain'},$clonedesc{'description'}); - } else { - $clonemsg = &mt('No new course created.').$linefeed.&mt('The new course could not be cloned from the existing course because the new course owner ([_1]) does not have cloning rights in the existing course ([_2]).',$args->{'ccuname'}.':'.$args->{'ccdomain'},$clonedesc{'description'}); - } - } + push(@clonemsg,({ + mt => 'No new course created.', + args => [], + }, + { + mt => 'The new course could not be cloned from the existing course because the new course owner ([_1]) does not have cloning rights in the existing course ([_2]).', + args => [$args->{'ccuname'}.':'.$args->{'ccdomain'},$clonedesc{'description'}], + })); + } } } } - return ($can_clone, $clonemsg, $cloneid, $clonehome); + return ($can_clone,\@clonemsg,$cloneid,$clonehome,$clonetitle); } sub construct_course { - my ($args,$logmsg,$courseid,$crsudom,$crsunum,$udom,$uname,$context,$cnum,$category,$coderef) = @_; - my $outcome; + my ($args,$logmsg,$courseid,$crsudom,$crsunum,$udom,$uname,$context, + $cnum,$category,$coderef,$callercontext,$user_lh) = @_; + my ($outcome,$msgref,$clonemsgref); my $linefeed = '
'."\n"; if ($context eq 'auto') { $linefeed = "\n"; @@ -14329,25 +16049,23 @@ sub construct_course { # # Are we cloning? # - my ($can_clone, $clonemsg, $cloneid, $clonehome); + my ($can_clone,$cloneid,$clonehome,$clonetitle); if (($args->{'clonecourse'}) && ($args->{'clonedomain'})) { - ($can_clone, $clonemsg, $cloneid, $clonehome) = &check_clone($args,$linefeed); - if ($context ne 'auto') { - if ($clonemsg ne '') { - $clonemsg = ''.$clonemsg.''; - } - } - $outcome .= $clonemsg.$linefeed; - + ($can_clone,$clonemsgref,$cloneid,$clonehome,$clonetitle) = &check_clone($args,$linefeed); if (!$can_clone) { - return (0,$outcome); + return (0,$outcome,$clonemsgref); } } # # Open course # - my $crstype = lc($args->{'crstype'}); + my $showncrstype; + if ($args->{'crstype'} eq 'Placement') { + $showncrstype = 'placement test'; + } else { + $showncrstype = lc($args->{'crstype'}); + } my %cenv=(); $$courseid=&Apache::lonnet::createcourse($args->{'course_domain'}, $args->{'cdescr'}, @@ -14358,15 +16076,20 @@ sub construct_course { $args->{'ccuname'}.':'. $args->{'ccdomain'}, $args->{'crstype'}, - $cnum,$context,$category); + $cnum,$context,$category, + $callercontext); # Note: The testing routines depend on this being output; see # Utils::Course. This needs to at least be output as a comment # if anyone ever decides to not show this, and Utils::Course::new # will need to be suitably modified. - $outcome .= &mt('New LON-CAPA [_1] ID: [_2]',$crstype,$$courseid).$linefeed; + if (($callercontext eq 'auto') && ($user_lh ne '')) { + $outcome .= &mt_user($user_lh,'New LON-CAPA [_1] ID: [_2]',$showncrstype,$$courseid).$linefeed; + } else { + $outcome .= &mt('New LON-CAPA [_1] ID: [_2]',$showncrstype,$$courseid).$linefeed; + } if ($$courseid =~ /^error:/) { - return (0,$outcome); + return (0,$outcome,$clonemsgref); } # @@ -14375,23 +16098,37 @@ sub construct_course { ($$crsudom,$$crsunum)= &LONCAPA::split_courseid($$courseid); my $crsuhome=&Apache::lonnet::homeserver($$crsunum,$$crsudom); if ($crsuhome eq 'no_host') { - $outcome .= &mt('Course creation failed, unrecognized course home server.').$linefeed; - return (0,$outcome); + if (($callercontext eq 'auto') && ($user_lh ne '')) { + $outcome .= &mt_user($user_lh, + 'Course creation failed, unrecognized course home server.'); + } else { + $outcome .= &mt('Course creation failed, unrecognized course home server.'); + } + $outcome .= $linefeed; + return (0,$outcome,$clonemsgref); } $outcome .= &mt('Created on').': '.$crsuhome.$linefeed; # # Do the cloning # + my @clonemsg; if ($can_clone && $cloneid) { - $clonemsg = &mt('Cloning [_1] from [_2]',$crstype,$clonehome); - if ($context ne 'auto') { - $clonemsg = ''.$clonemsg.''; - } - $outcome .= $clonemsg.$linefeed; + push(@clonemsg, + { + mt => 'Created [_1] by cloning from [_2]', + args => [$showncrstype,$clonetitle], + }); my %oldcenv=&Apache::lonnet::dump('environment',$$crsudom,$$crsunum); # Copy all files - &Apache::lonclonecourse::copycoursefiles($cloneid,$$courseid,$args->{'datemode'},$args->{'dateshift'}); + my @info = + &Apache::lonclonecourse::copycoursefiles($cloneid,$$courseid,$args->{'datemode'}, + $args->{'dateshift'},$args->{'crscode'}, + $args->{'ccuname'}.':'.$args->{'ccdomain'}, + $args->{'tinyurls'}); + if (@info) { + push(@clonemsg,@info); + } # Restore URL $cenv{'url'}=$oldcenv{'url'}; # Restore title @@ -14467,7 +16204,7 @@ sub construct_course { my $addcheck = &Apache::lonnet::auto_new_course($$crsunum,$$crsudom,$class,$cenv{'internal.courseowner'}); $cenv{'internal.sectionnums'} .= $item.','; unless ($addcheck eq 'ok') { - push @badclasses, $class; + push(@badclasses,$class); } } $cenv{'internal.sectionnums'} =~ s/,$//; @@ -14495,7 +16232,7 @@ sub construct_course { my $addcheck = &Apache::lonnet::auto_new_course($$crsunum,$$crsudom,$xl,$cenv{'internal.courseowner'}); $cenv{'internal.crosslistings'} .= $item.','; unless ($addcheck eq 'ok') { - push @badclasses, $xl; + push(@badclasses,$xl); } } $cenv{'internal.crosslistings'} =~ s/,$//; @@ -14530,27 +16267,28 @@ sub construct_course { } if (@badclasses > 0) { my %lt=&Apache::lonlocal::texthash( - 'tclb' => 'The courses listed below were included as sections or crosslistings affiliated with your new LON-CAPA course. However, if automated course roster updates are enabled for this class, these particular sections/crosslistings will not contribute towards enrollment, because the user identified as the course owner for this LON-CAPA course', - 'dnhr' => 'does not have rights to access enrollment in these classes', - 'adby' => 'as determined by the policies of your institution on access to official classlists' + 'tclb' => 'The courses listed below were included as sections or crosslistings affiliated with your new LON-CAPA course.', + 'howi' => 'However, if automated course roster updates are enabled for this class, these particular sections/crosslistings are not guaranteed to contribute towards enrollment.', + 'itis' => 'It is possible that rights to access enrollment for these classes will be available through assignment of co-owners.', ); - my $badclass_msg = $cenv{'internal.courseowner'}.') - '.$lt{'dnhr'}. - ' ('.$lt{'adby'}.')'; + my $badclass_msg = $lt{'tclb'}.$linefeed.$lt{'howi'}.$linefeed. + &mt('That is because the user identified as the course owner ([_1]) does not have rights to access enrollment in these classes, as determined by the policies of your institution on access to official classlists',$cenv{'internal.courseowner'}).$linefeed.$lt{'itis'}; if ($context eq 'auto') { $outcome .= $badclass_msg.$linefeed; + } else { $outcome .= '
'.$badclass_msg.$linefeed.'

\n"; + $outcome .= "
  • $item
    • \n"; } + } + if ($context eq 'auto') { + $outcome .= $linefeed; + } else { + $outcome .= "

    \n"; } } if ($args->{'no_end_date'}) { @@ -14583,6 +16321,9 @@ sub construct_course { if ($args->{'setcontent'}) { $cenv{'question.email'}=$args->{'ccuname'}.':'.$args->{'ccdomain'}; } + if ($args->{'setcomment'}) { + $cenv{'comment.email'}=$args->{'ccuname'}.':'.$args->{'ccdomain'}; + } } if ($args->{'reshome'}) { $cenv{'reshome'}=$args->{'reshome'}.'/'; @@ -14654,12 +16395,17 @@ sub construct_course { # Open all assignments # if ($args->{'openall'}) { + my $opendate = time; + if ($args->{'openallfrom'} =~ /^\d+$/) { + $opendate = $args->{'openallfrom'}; + } my $storeunder=$$crsudom.'_'.$$crsunum.'.0.opendate'; - my %storecontent = ($storeunder => time, + my %storecontent = ($storeunder => $opendate, $storeunder.'.type' => 'date_start'); - - $outcome .= &mt('Opening all assignments').': '.&Apache::lonnet::cput - ('resourcedata',\%storecontent,$$crsudom,$$crsunum).$linefeed; + $outcome .= &mt('All assignments open starting [_1]', + &Apache::lonlocal::locallocaltime($opendate)).': '. + &Apache::lonnet::cput + ('resourcedata',\%storecontent,$$crsudom,$$crsunum).$linefeed; } # # Set first page @@ -14689,7 +16435,31 @@ sub construct_course { $outcome .= ($fatal?$errtext:'write ok').$linefeed; } - return (1,$outcome); +# +# Set params for Placement Tests +# + if ($args->{'crstype'} eq 'Placement') { + my %storecontent; + my $prefix=$$crsudom.'_'.$$crsunum.'.0.'; + my %defaults = ( + buttonshide => { value => 'yes', + type => 'string_yesno',}, + type => { value => 'randomizetry', + type => 'string_questiontype',}, + maxtries => { value => 1, + type => 'int_pos',}, + problemstatus => { value => 'no', + type => 'string_problemstatus',}, + ); + foreach my $key (keys(%defaults)) { + $storecontent{$prefix.$key} = $defaults{$key}{'value'}; + $storecontent{$prefix.$key.'.type'} = $defaults{$key}{'type'}; + } + &Apache::lonnet::cput + ('resourcedata',\%storecontent,$$crsudom,$$crsunum); + } + + return (1,$outcome,\@clonemsg); } sub make_unique_code { @@ -14749,8 +16519,7 @@ sub generate_code { ############################################################ ############################################################ -#SD -# only Community and Course, or anything else? +# Community, Course and Placement Test sub course_type { my ($cid) = @_; if (!defined($cid)) { @@ -14768,17 +16537,20 @@ sub group_term { my %names = ( 'Course' => 'group', 'Community' => 'group', + 'Placement' => 'group', ); return $names{$crstype}; } sub course_types { - my @types = ('official','unofficial','community','textbook'); + my @types = ('official','unofficial','community','textbook','placement','lti'); my %typename = ( official => 'Official course', unofficial => 'Unofficial course', community => 'Community', textbook => 'Textbook course', + placement => 'Placement test', + lti => 'LTI provider', ); return (\@types,\%typename); } @@ -14858,6 +16630,24 @@ sub compare_arrays { return @difference; } +sub lon_status_items { + my %defaults = ( + E => 100, + W => 4, + N => 1, + U => 5, + threshold => 200, + sysmail => 2500, + ); + my %names = ( + E => 'Errors', + W => 'Warnings', + N => 'Notices', + U => 'Unsent', + ); + return (\%defaults,\%names); +} + # -------------------------------------------------------- Initialize user login sub init_user_environment { my ($r, $username, $domain, $authhost, $form, $args) = @_; @@ -14865,8 +16655,6 @@ sub init_user_environment { my $public=($username eq 'public' && $domain eq 'public'); -# See if old ID present, if so, remove - my ($filename,$cookie,$userroles,$firstaccenv,$timerintenv); my $now=time; @@ -14888,12 +16676,29 @@ sub init_user_environment { } if (!$cookie) { $cookie="publicuser_$oldest"; } } else { - # if this isn't a robot, kill any existing non-robot sessions + # See if old ID present, if so, remove if this isn't a robot, + # killing any existing non-robot sessions if (!$args->{'robot'}) { opendir(DIR,$lonids); while ($filename=readdir(DIR)) { if ($filename=~/^$username\_\d+\_$domain\_$authhost\.id$/) { - unlink($lonids.'/'.$filename); + if (tie(my %oldenv,'GDBM_File',"$lonids/$filename", + &GDBM_READER(),0640)) { + my $linkedfile; + if (exists($oldenv{'user.linkedenv'})) { + $linkedfile = $oldenv{'user.linkedenv'}; + } + untie(%oldenv); + if (unlink("$lonids/$filename")) { + if ($linkedfile =~ /^[a-f0-9]+_linked$/) { + if (-l "$lonids/$linkedfile.id") { + unlink("$lonids/$linkedfile.id"); + } + } + } + } else { + unlink($lonids.'/'.$filename); + } } } closedir(DIR); @@ -14928,8 +16733,7 @@ sub init_user_environment { my %userenv = &Apache::lonnet::dump('environment',$domain,$username); my ($tmp) = keys(%userenv); - if ($tmp !~ /^(con_lost|error|no_such_host)/i) { - } else { + if ($tmp =~ /^(con_lost|error|no_such_host)/i) { undef(%userenv); } if (($userenv{'interface'}) && (!$form->{'interface'})) { @@ -14981,39 +16785,75 @@ sub init_user_environment { $env{'user.noloadbalance'} = $lonhost; } - my %is_adv = ( is_adv => $env{'user.adv'} ); - my %domdef; - unless ($domain eq 'public') { - %domdef = &Apache::lonnet::get_domain_defaults($domain); + if ($form->{'noloadbalance'}) { + my @hosts = &Apache::lonnet::current_machine_ids(); + my $hosthere = $form->{'noloadbalance'}; + if (grep(/^\Q$hosthere\E$/,@hosts)) { + $initial_env{"user.noloadbalance"} = $hosthere; + $env{'user.noloadbalance'} = $hosthere; + } } - foreach my $tool ('aboutme','blog','webdav','portfolio') { - $userenv{'availabletools.'.$tool} = - &Apache::lonnet::usertools_access($username,$domain,$tool,'reload', - undef,\%userenv,\%domdef,\%is_adv); - } + unless ($domain eq 'public') { + my %is_adv = ( is_adv => $env{'user.adv'} ); + my %domdef = &Apache::lonnet::get_domain_defaults($domain); - foreach my $crstype ('official','unofficial','community','textbook') { - $userenv{'canrequest.'.$crstype} = - &Apache::lonnet::usertools_access($username,$domain,$crstype, - 'reload','requestcourses', - \%userenv,\%domdef,\%is_adv); - } + foreach my $tool ('aboutme','blog','webdav','portfolio') { + $userenv{'availabletools.'.$tool} = + &Apache::lonnet::usertools_access($username,$domain,$tool,'reload', + undef,\%userenv,\%domdef,\%is_adv); + } - $userenv{'canrequest.author'} = - &Apache::lonnet::usertools_access($username,$domain,'requestauthor', - 'reload','requestauthor', - \%userenv,\%domdef,\%is_adv); - my %reqauthor = &Apache::lonnet::get('requestauthor',['author_status','author'], - $domain,$username); - my $reqstatus = $reqauthor{'author_status'}; - if ($reqstatus eq 'approval' || $reqstatus eq 'approved') { - if (ref($reqauthor{'author'}) eq 'HASH') { - $userenv{'requestauthorqueued'} = $reqstatus.':'. - $reqauthor{'author'}{'timestamp'}; + foreach my $crstype ('official','unofficial','community','textbook','placement','lti') { + $userenv{'canrequest.'.$crstype} = + &Apache::lonnet::usertools_access($username,$domain,$crstype, + 'reload','requestcourses', + \%userenv,\%domdef,\%is_adv); } - } + $userenv{'canrequest.author'} = + &Apache::lonnet::usertools_access($username,$domain,'requestauthor', + 'reload','requestauthor', + \%userenv,\%domdef,\%is_adv); + my %reqauthor = &Apache::lonnet::get('requestauthor',['author_status','author'], + $domain,$username); + my $reqstatus = $reqauthor{'author_status'}; + if ($reqstatus eq 'approval' || $reqstatus eq 'approved') { + if (ref($reqauthor{'author'}) eq 'HASH') { + $userenv{'requestauthorqueued'} = $reqstatus.':'. + $reqauthor{'author'}{'timestamp'}; + } + } + my ($types,$typename) = &course_types(); + if (ref($types) eq 'ARRAY') { + my @options = ('approval','validate','autolimit'); + my $optregex = join('|',@options); + my (%willtrust,%trustchecked); + foreach my $type (@{$types}) { + my $dom_str = $env{'environment.reqcrsotherdom.'.$type}; + if ($dom_str ne '') { + my $updatedstr = ''; + my @possdomains = split(',',$dom_str); + foreach my $entry (@possdomains) { + my ($extdom,$extopt) = split(':',$entry); + unless ($trustchecked{$extdom}) { + $willtrust{$extdom} = &Apache::lonnet::will_trust('reqcrs',$domain,$extdom); + $trustchecked{$extdom} = 1; + } + if ($willtrust{$extdom}) { + $updatedstr .= $entry.','; + } + } + $updatedstr =~ s/,$//; + if ($updatedstr) { + $userenv{'reqcrsotherdom.'.$type} = $updatedstr; + } else { + delete($userenv{'reqcrsotherdom.'.$type}); + } + } + } + } + } $env{'user.environment'} = "$lonids/$cookie.id"; if (tie(my %disk_env,'GDBM_File',"$lonids/$cookie.id", @@ -15241,15 +17081,19 @@ sub build_filters { $createdfilterform = &timebased_select_form('createdfilter',$filter); } + my $prefix = $crstype; + if ($crstype eq 'Placement') { + $prefix = 'Placement Test' + } my %lt = &Apache::lonlocal::texthash( - 'cac' => "$crstype Activity", - 'ccr' => "$crstype Created", - 'cde' => "$crstype Title", - 'cdo' => "$crstype Domain", + 'cac' => "$prefix Activity", + 'ccr' => "$prefix Created", + 'cde' => "$prefix Title", + 'cdo' => "$prefix Domain", 'ins' => 'Institutional Code', 'inc' => 'Institutional Categorization', - 'cow' => "$crstype Owner/Co-owner", - 'cop' => "$crstype Personnel Includes", + 'cow' => "$prefix Owner/Co-owner", + 'cop' => "$prefix Personnel Includes", 'cog' => 'Type', ); @@ -15257,6 +17101,8 @@ sub build_filters { my $typeval = 'Course'; if ($crstype eq 'Community') { $typeval = 'Community'; + } elsif ($crstype eq 'Placement') { + $typeval = 'Placement'; } $typeselectform = ''; } else { @@ -15265,9 +17111,15 @@ sub build_filters { $typeselectform .= ' onchange="'.$onchange.'"'; } $typeselectform .= '>'."\n"; - foreach my $posstype ('Course','Community') { + foreach my $posstype ('Course','Community','Placement') { + my $shown; + if ($posstype eq 'Placement') { + $shown = &mt('Placement Test'); + } else { + $shown = &mt($posstype); + } $typeselectform.='\n"; + ($posstype eq $crstype ? ' selected="selected" ' : ''). ">".$shown."\n"; } $typeselectform.=""; } @@ -15524,11 +17376,18 @@ cloneruname - optional username of new c clonerudom - optional domain of new course owner -domcloner - Optional "domcloner" flag; has value=1 if user has ccc priv in domain being filtered by, +domcloner - optional "domcloner" flag; has value=1 if user has ccc priv in domain being filtered by, (used when DC is using course creation form) codetitles - reference to array of titles of components in institutional codes (official courses). +cc_clone - escaped comma separated list of courses for which course cloner has active CC role + (and so can clone automatically) + +reqcrsdom - domain of new course, where search_courses is used to identify potential courses to clone + +reqinstcode - institutional code of new course, where search_courses is used to identify potential + courses to clone Returns: %courses - hash of courses satisfying search criteria, keys = course IDs, values are corresponding colon-separated escaped description, institutional code, owner and type. @@ -15539,7 +17398,8 @@ Side Effects: None sub search_courses { - my ($dom,$type,$filter,$numtitles,$cloneruname,$clonerudom,$domcloner,$codetitles) = @_; + my ($dom,$type,$filter,$numtitles,$cloneruname,$clonerudom,$domcloner,$codetitles, + $cc_clone,$reqcrsdom,$reqinstcode) = @_; my (%courses,%showcourses,$cloner); if (($filter->{'ownerfilter'} ne '') || ($filter->{'ownerdomfilter'} ne '')) { @@ -15587,10 +17447,10 @@ sub search_courses { $filter->{'combownerfilter'}, $filter->{'coursefilter'}, undef,undef,$type,$regexpok,undef,undef, - undef,undef,$cloner,$env{'form.cc_clone'}, + undef,undef,$cloner,$cc_clone, $filter->{'cloneableonly'}, $createdbefore,$createdafter,undef, - $domcloner); + $domcloner,undef,$reqcrsdom,$reqinstcode); if (($filter->{'personfilter'} ne '') && ($filter->{'persondomfilter'} ne '')) { my $ccrole; if ($type eq 'Community') { @@ -15610,7 +17470,7 @@ sub search_courses { if (ref($courses{$cid}) eq 'HASH') { if (ref($courses{$cid}{roles}) eq 'ARRAY') { if (!grep(/^\Q$courserole\E$/,@{$courses{$cid}{roles}})) { - push (@{$courses{$cid}{roles}},$courserole); + push(@{$courses{$cid}{roles}},$courserole); } } else { $courses{$cid}{roles} = [$courserole]; @@ -15628,26 +17488,240 @@ sub search_courses { =back +=head1 Routines for version requirements for current course. + +=over 4 + +=item * &check_release_required() + +Compares required LON-CAPA version with version on server, and +if required version is newer looks for a server with the required version. + +Looks first at servers in user's owen domain; if none suitable, looks at +servers in course's domain are permitted to host sessions for user's domain. + +Inputs: + +$loncaparev - Version on current server (format: Major.Minor.Subrelease-datestamp) + +$courseid - Course ID of current course + +$rolecode - User's current role in course (for switchserver query string). + +$required - LON-CAPA version needed by course (format: Major.Minor). + + +Returns: + +$switchserver - query string tp append to /adm/switchserver call (if + current server's LON-CAPA version is too old. + +$warning - Message is displayed if no suitable server could be found. + =cut +sub check_release_required { + my ($loncaparev,$courseid,$rolecode,$required) = @_; + my ($switchserver,$warning); + if ($required ne '') { + my ($reqdmajor,$reqdminor) = ($required =~ /^(\d+)\.(\d+)$/); + my ($major,$minor) = ($loncaparev =~ /^\'?(\d+)\.(\d+)\.[\w.\-]+\'?$/); + if ($reqdmajor ne '' && $reqdminor ne '') { + my $otherserver; + if (($major eq '' && $minor eq '') || + (($reqdmajor > $major) || (($reqdmajor == $major) && ($reqdminor > $minor)))) { + my ($userdomserver) = &Apache::lonnet::choose_server($env{'user.domain'},undef,$required,1); + my $switchlcrev = + &Apache::lonnet::get_server_loncaparev($env{'user.domain'}, + $userdomserver); + my ($swmajor,$swminor) = ($switchlcrev =~ /^\'?(\d+)\.(\d+)\.[\w.\-]+\'?$/); + if (($swmajor eq '' && $swminor eq '') || ($reqdmajor > $swmajor) || + (($reqdmajor == $swmajor) && ($reqdminor > $swminor))) { + my $cdom = $env{'course.'.$courseid.'.domain'}; + if ($cdom ne $env{'user.domain'}) { + my ($coursedomserver,$coursehostname) = &Apache::lonnet::choose_server($cdom,undef,$required,1); + my $serverhomeID = &Apache::lonnet::get_server_homeID($coursehostname); + my $serverhomedom = &Apache::lonnet::host_domain($serverhomeID); + my %defdomdefaults = &Apache::lonnet::get_domain_defaults($serverhomedom); + my %udomdefaults = &Apache::lonnet::get_domain_defaults($env{'user.domain'}); + my $remoterev = &Apache::lonnet::get_server_loncaparev($serverhomedom,$coursedomserver); + my $canhost = + &Apache::lonnet::can_host_session($env{'user.domain'}, + $coursedomserver, + $remoterev, + $udomdefaults{'remotesessions'}, + $defdomdefaults{'hostedsessions'}); + + if ($canhost) { + $otherserver = $coursedomserver; + } else { + $warning = &mt('Requires LON-CAPA version [_1].',$env{'course.'.$courseid.'.internal.releaserequired'}).'
    '. &mt("No suitable server could be found amongst servers in either your own domain or in the course's domain."); + } + } else { + $warning = &mt('Requires LON-CAPA version [_1].',$env{'course.'.$courseid.'.internal.releaserequired'}).'
    '.&mt("No suitable server could be found amongst servers in your own domain (which is also the course's domain)."); + } + } else { + $otherserver = $userdomserver; + } + } + if ($otherserver ne '') { + $switchserver = 'otherserver='.$otherserver.'&role='.$rolecode; + } + } + } + return ($switchserver,$warning); +} + +=pod + +=item * &check_release_result() + +Inputs: + +$switchwarning - Warning message if no suitable server found to host session. + +$switchserver - query string to append to /adm/switchserver containing lonHostID + and current role. + +Returns: HTML to display with information about requirement to switch server. + Either displaying warning with link to Roles/Courses screen or + display link to switchserver. + +=cut + +sub check_release_result { + my ($switchwarning,$switchserver) = @_; + my $output = &start_page('Selected course unavailable on this server'). + '

    '; + if ($switchwarning) { + $output .= $switchwarning.'
    '; + if (&show_course()) { + $output .= &mt('Display courses'); + } else { + $output .= &mt('Display roles'); + } + $output .= ''; + } elsif ($switchserver) { + $output .= &mt('This course requires a newer version of LON-CAPA than is installed on this server.'). + '
    '. + ''. + &mt('Switch Server'). + ''; + } + $output .= '

    '.&end_page(); + return $output; +} + +=pod + +=item * &needs_coursereinit() + +Determine if course contents stored for user's session needs to be +refreshed, because content has changed since "Big Hash" last tied. + +Check for change is made if time last checked is more than 10 minutes ago +(by default). + +Inputs: + +$loncaparev - Version on current server (format: Major.Minor.Subrelease-datestamp) + +$interval (optional) - Time which may elapse (in s) between last check for content + change in current course. (default: 600 s). + +Returns: an array; first element is: + +=over 4 + +'switch' - if content updates mean user's session + needs to be switched to a server running a newer LON-CAPA version + +'update' - if course session needs to be refreshed (i.e., Big Hash needs to be reloaded) + on current server hosting user's session + +'' - if no action required. + +=back + +If first item element is 'switch': + +second item is $switchwarning - Warning message if no suitable server found to host session. + +third item is $switchserver - query string to append to /adm/switchserver containing lonHostID + and current role. + +otherwise: no other elements returned. + +=back + +=cut + +sub needs_coursereinit { + my ($loncaparev,$interval) = @_; + return() unless ($env{'request.course.id'} && $env{'request.course.tied'}); + my $cdom = $env{'course.'.$env{'request.course.id'}.'.domain'}; + my $cnum = $env{'course.'.$env{'request.course.id'}.'.num'}; + my $now = time; + if ($interval eq '') { + $interval = 600; + } + if (($now-$env{'request.course.timechecked'})>$interval) { + &Apache::lonnet::appenv({'request.course.timechecked'=>$now}); + my $blocked = &blocking_status('reinit',$cnum,$cdom,undef,1); + if ($blocked) { + return (); + } + my $lastchange = &Apache::lonnet::get_coursechange($cdom,$cnum); + if ($lastchange > $env{'request.course.tied'}) { + my %curr_reqd_hash = &Apache::lonnet::userenvironment($cdom,$cnum,'internal.releaserequired'); + if ($curr_reqd_hash{'internal.releaserequired'} ne '') { + my $required = $env{'course.'.$cdom.'_'.$cnum.'.internal.releaserequired'}; + if ($curr_reqd_hash{'internal.releaserequired'} ne $required) { + &Apache::lonnet::appenv({'course.'.$cdom.'_'.$cnum.'.internal.releaserequired' => + $curr_reqd_hash{'internal.releaserequired'}}); + my ($switchserver,$switchwarning) = + &check_release_required($loncaparev,$cdom.'_'.$cnum,$env{'request.role'}, + $curr_reqd_hash{'internal.releaserequired'}); + if ($switchwarning ne '' || $switchserver ne '') { + return ('switch',$switchwarning,$switchserver); + } + } + } + return ('update'); + } + } + return (); +} sub update_content_constraints { - my ($cdom,$cnum,$chome,$cid) = @_; + my ($cdom,$cnum,$chome,$cid,$keeporder) = @_; my %curr_reqd_hash = &Apache::lonnet::userenvironment($cdom,$cnum,'internal.releaserequired'); my ($reqdmajor,$reqdminor) = split(/\./,$curr_reqd_hash{'internal.releaserequired'}); - my %checkresponsetypes; + my (%checkresponsetypes,%checkcrsrestypes); foreach my $key (keys(%Apache::lonnet::needsrelease)) { my ($item,$name,$value) = split(/:/,$key); if ($item eq 'resourcetag') { if ($name eq 'responsetype') { $checkresponsetypes{$value} = $Apache::lonnet::needsrelease{$key} } + } elsif ($item eq 'course') { + if ($name eq 'courserestype') { + $checkcrsrestypes{$value} = $Apache::lonnet::needsrelease{$key}; + } } } my $navmap = Apache::lonnavmaps::navmap->new(); if (defined($navmap)) { - my %allresponses; - foreach my $res ($navmap->retrieveResources(undef,sub { $_[0]->is_problem() },1,0)) { + my (%allresponses,%allcrsrestypes); + foreach my $res ($navmap->retrieveResources(undef,sub { $_[0]->is_problem() || $_[0]->is_tool() },1,0)) { + if ($res->is_tool()) { + if ($allcrsrestypes{'exttool'}) { + $allcrsrestypes{'exttool'} ++; + } else { + $allcrsrestypes{'exttool'} = 1; + } + next; + } my %responses = $res->responseTypes(); foreach my $key (keys(%responses)) { next unless(exists($checkresponsetypes{$key})); @@ -15660,8 +17734,38 @@ sub update_content_constraints { ($reqdmajor,$reqdminor) = ($major,$minor); } } + foreach my $key (keys(%allcrsrestypes)) { + my ($major,$minor) = split(/\./,$checkcrsrestypes{$key}); + if (($major > $reqdmajor) || ($major == $reqdmajor && $minor > $reqdminor)) { + ($reqdmajor,$reqdminor) = ($major,$minor); + } + } undef($navmap); } + my (@resources,@order,@resparms,@zombies); + if ($keeporder) { + use LONCAPA::map; + @resources = @LONCAPA::map::resources; + @order = @LONCAPA::map::order; + @resparms = @LONCAPA::map::resparms; + @zombies = @LONCAPA::map::zombies; + } + my $suppmap = 'supplemental.sequence'; + my ($suppcount,$supptools,$errors) = (0,0,0); + ($suppcount,$supptools,$errors) = &recurse_supplemental($cnum,$cdom,$suppmap, + $suppcount,$supptools,$errors); + if ($keeporder) { + @LONCAPA::map::resources = @resources; + @LONCAPA::map::order = @order; + @LONCAPA::map::resparms = @resparms; + @LONCAPA::map::zombies = @zombies; + } + if ($supptools) { + my ($major,$minor) = split(/\./,$checkcrsrestypes{'exttool'}); + if (($major > $reqdmajor) || ($major == $reqdmajor && $minor > $reqdminor)) { + ($reqdmajor,$reqdminor) = ($major,$minor); + } + } unless (($reqdmajor eq '') && ($reqdminor eq '')) { &Apache::lonnet::update_released_required($reqdmajor.'.'.$reqdminor,$cdom,$cnum,$chome,$cid); } @@ -15682,7 +17786,7 @@ sub allmaps_incourse { if ($lastchange > $env{'request.course.tied'}) { my ($furl,$ferr) = &Apache::lonuserstate::readmap("$cdom/$cnum"); unless ($ferr) { - &update_content_constraints($cdom,$cnum,$chome,$cid); + &update_content_constraints($cdom,$cnum,$chome,$cid,1); } } my $navmap = Apache::lonnavmaps::navmap->new(); @@ -15718,7 +17822,7 @@ sub parse_supplemental_title { } sub recurse_supplemental { - my ($cnum,$cdom,$suppmap,$numfiles,$errors) = @_; + my ($cnum,$cdom,$suppmap,$numfiles,$numexttools,$errors) = @_; if ($suppmap) { my ($errtext,$fatal) = &LONCAPA::map::mapread('/uploaded/'.$cdom.'/'.$cnum.'/'.$suppmap); if ($fatal) { @@ -15729,8 +17833,12 @@ sub recurse_supplemental { my ($title,$src,$ext,$type,$status)=split(/\:/,$res); if (($src ne '') && ($status eq 'res')) { if ($src =~ m{^\Q/uploaded/$cdom/$cnum/\E(supplemental_\d+\.sequence)$}) { - ($numfiles,$errors) = &recurse_supplemental($cnum,$cdom,$1,$numfiles,$errors); + ($numfiles,$numexttools,$errors) = &recurse_supplemental($cnum,$cdom,$1, + $numfiles,$numexttools,$errors); } else { + if ($src =~ m{^/adm/$cdom/$cnum/\d+/ext\.tool$}) { + $numexttools ++; + } $numfiles ++; } } @@ -15738,12 +17846,12 @@ sub recurse_supplemental { } } } - return ($numfiles,$errors); + return ($numfiles,$numexttools,$errors); } sub symb_to_docspath { - my ($symb) = @_; - return unless ($symb); + my ($symb,$navmapref) = @_; + return unless ($symb && ref($navmapref)); my ($mapurl,$id,$resurl) = &Apache::lonnet::decode_symb($symb); if ($resurl=~/\.(sequence|page)$/) { $mapurl=$resurl; @@ -15751,9 +17859,11 @@ sub symb_to_docspath { $mapurl=$env{'course.'.$env{'request.course.id'}.'.url'}; } my $mapresobj; - my $navmap = Apache::lonnavmaps::navmap->new(); - if (ref($navmap)) { - $mapresobj = $navmap->getResourceByUrl($mapurl); + unless (ref($$navmapref)) { + $$navmapref = Apache::lonnavmaps::navmap->new(); + } + if (ref($$navmapref)) { + $mapresobj = $$navmapref->getResourceByUrl($mapurl); } $mapurl=~s{^.*/([^/]+)\.(\w+)$}{$1}; my $type=$2; @@ -15763,7 +17873,7 @@ sub symb_to_docspath { if ($pcslist ne '') { foreach my $pc (split(/,/,$pcslist)) { next if ($pc <= 1); - my $res = $navmap->getByMapPc($pc); + my $res = $$navmapref->getByMapPc($pc); if (ref($res)) { my $thisurl = $res->src(); $thisurl=~s{^.*/([^/]+)\.\w+$}{$1}; @@ -15810,31 +17920,32 @@ sub symb_to_docspath { } sub captcha_display { - my ($context,$lonhost) = @_; + my ($context,$lonhost,$defdom) = @_; my ($output,$error); - my ($captcha,$pubkey,$privkey) = &get_captcha_config($context,$lonhost); + my ($captcha,$pubkey,$privkey,$version) = + &get_captcha_config($context,$lonhost,$defdom); if ($captcha eq 'original') { $output = &create_captcha(); unless ($output) { $error = 'captcha'; } } elsif ($captcha eq 'recaptcha') { - $output = &create_recaptcha($pubkey); + $output = &create_recaptcha($pubkey,$version); unless ($output) { $error = 'recaptcha'; } } - return ($output,$error,$captcha); + return ($output,$error,$captcha,$version); } sub captcha_response { - my ($context,$lonhost) = @_; + my ($context,$lonhost,$defdom) = @_; my ($captcha_chk,$captcha_error); - my ($captcha,$pubkey,$privkey) = &get_captcha_config($context,$lonhost); + my ($captcha,$pubkey,$privkey,$version) = &get_captcha_config($context,$lonhost,$defdom); if ($captcha eq 'original') { ($captcha_chk,$captcha_error) = &check_captcha(); } elsif ($captcha eq 'recaptcha') { - $captcha_chk = &check_recaptcha($privkey); + $captcha_chk = &check_recaptcha($privkey,$version); } else { $captcha_chk = 1; } @@ -15842,8 +17953,8 @@ sub captcha_response { } sub get_captcha_config { - my ($context,$lonhost) = @_; - my ($captcha,$pubkey,$privkey,$hashtocheck); + my ($context,$lonhost,$dom_in_effect) = @_; + my ($captcha,$pubkey,$privkey,$version,$hashtocheck); my $hostname = &Apache::lonnet::hostname($lonhost); my $serverhomeID = &Apache::lonnet::get_server_homeID($hostname); my $serverhomedom = &Apache::lonnet::host_domain($serverhomeID); @@ -15859,6 +17970,10 @@ sub get_captcha_config { } if ($privkey && $pubkey) { $captcha = 'recaptcha'; + $version = $hashtocheck->{'recaptchaversion'}; + if ($version ne '2') { + $version = 1; + } } else { $captcha = 'original'; } @@ -15876,14 +17991,39 @@ sub get_captcha_config { $privkey = $domconfhash{$serverhomedom.'.login.recaptchakeys_private'}; if ($privkey && $pubkey) { $captcha = 'recaptcha'; + $version = $domconfhash{$serverhomedom.'.login.recaptchaversion'}; + if ($version ne '2') { + $version = 1; + } } else { $captcha = 'original'; } } elsif ($domconfhash{$serverhomedom.'.login.captcha'} eq 'original') { $captcha = 'original'; } - } - return ($captcha,$pubkey,$privkey); + } elsif ($context eq 'passwords') { + if ($dom_in_effect) { + my %passwdconf = &Apache::lonnet::get_passwdconf($dom_in_effect); + if ($passwdconf{'captcha'} eq 'recaptcha') { + if (ref($passwdconf{'recaptchakeys'}) eq 'HASH') { + $pubkey = $passwdconf{'recaptchakeys'}{'public'}; + $privkey = $passwdconf{'recaptchakeys'}{'private'}; + } + if ($privkey && $pubkey) { + $captcha = 'recaptcha'; + $version = $passwdconf{'recaptchaversion'}; + if ($version ne '2') { + $version = 1; + } + } else { + $captcha = 'original'; + } + } elsif ($passwdconf{'captcha'} ne 'notused') { + $captcha = 'original'; + } + } + } + return ($captcha,$pubkey,$privkey,$version); } sub create_captcha { @@ -15906,6 +18046,9 @@ sub create_captcha { last; } } + if ($output eq '') { + &Apache::lonnet::logthis("Failed to create Captcha code after $tries attempts."); + } return $output; } @@ -15942,38 +18085,66 @@ sub check_captcha { } sub create_recaptcha { - my ($pubkey) = @_; - my $use_ssl; - if ($ENV{'SERVER_PORT'} == 443) { - $use_ssl = 1; - } - my $captcha = Captcha::reCAPTCHA->new; - return $captcha->get_options_setter({theme => 'white'})."\n". - $captcha->get_html($pubkey,undef,$use_ssl). - &mt('If either word is hard to read, [_1] will replace them.', - 'reCAPTCHA refresh'). - '

    '; + my ($pubkey,$version) = @_; + if ($version >= 2) { + return '
    '; + } else { + my $use_ssl; + if ($ENV{'SERVER_PORT'} == 443) { + $use_ssl = 1; + } + my $captcha = Captcha::reCAPTCHA->new; + return $captcha->get_options_setter({theme => 'white'})."\n". + $captcha->get_html($pubkey,undef,$use_ssl). + &mt('If the text is hard to read, [_1] will replace them.', + 'reCAPTCHA refresh'). + '

    '; + } } sub check_recaptcha { - my ($privkey) = @_; + my ($privkey,$version) = @_; my $captcha_chk; - my $captcha = Captcha::reCAPTCHA->new; - my $captcha_result = - $captcha->check_answer( - $privkey, - $ENV{'REMOTE_ADDR'}, - $env{'form.recaptcha_challenge_field'}, - $env{'form.recaptcha_response_field'}, - ); - if ($captcha_result->{is_valid}) { - $captcha_chk = 1; + if ($version >= 2) { + my %info = ( + secret => $privkey, + response => $env{'form.g-recaptcha-response'}, + remoteip => $ENV{'REMOTE_ADDR'}, + ); + my $request=new HTTP::Request('POST','https://www.google.com/recaptcha/api/siteverify'); + $request->content(join('&',map { + my $name = escape($_); + "$name=" . ( ref($info{$_}) eq 'ARRAY' + ? join("&$name=", map {escape($_) } @{$info{$_}}) + : &escape($info{$_}) ); + } keys(%info))); + my $response = &LONCAPA::LWPReq::makerequest('',$request,'','',10,1); + if ($response->is_success) { + my $data = JSON::DWIW->from_json($response->decoded_content); + if (ref($data) eq 'HASH') { + if ($data->{'success'}) { + $captcha_chk = 1; + } + } + } + } else { + my $captcha = Captcha::reCAPTCHA->new; + my $captcha_result = + $captcha->check_answer( + $privkey, + $ENV{'REMOTE_ADDR'}, + $env{'form.recaptcha_challenge_field'}, + $env{'form.recaptcha_response_field'}, + ); + if ($captcha_result->{is_valid}) { + $captcha_chk = 1; + } } return $captcha_chk; } sub emailusername_info { - my @fields = ('firstname','lastname','institution','web','location','officialemail'); + my @fields = ('firstname','lastname','institution','web','location','officialemail','id'); my %titles = &Apache::lonlocal::texthash ( lastname => 'Last Name', firstname => 'First Name', @@ -15981,6 +18152,7 @@ sub emailusername_info { location => "School's city, state/province, country", web => "School's web address", officialemail => 'E-mail address at institution (if different)', + id => 'Student/Employee ID', ); return (\@fields,\%titles); } @@ -16009,9 +18181,25 @@ sub cleanup_html { # Checks for critical messages and returns a redirect url if one exists. # $interval indicates how often to check for messages. +# $context is the calling context -- roles, grades, contents, menu or flip. sub critical_redirect { - my ($interval) = @_; + my ($interval,$context) = @_; if ((time-$env{'user.criticalcheck.time'})>$interval) { + if (($env{'request.course.id'}) && (($context eq 'flip') || ($context eq 'contents'))) { + my $cdom = $env{'course.'.$env{'request.course.id'}.'.domain'}; + my $cnum = $env{'course.'.$env{'request.course.id'}.'.num'}; + my $blocked = &blocking_status('alert',$cnum,$cdom,undef,1); + if ($blocked) { + my $checkrole = "cm./$cdom/$cnum"; + if ($env{'request.course.sec'} ne '') { + $checkrole .= "/$env{'request.course.sec'}"; + } + unless ((&Apache::lonnet::allowed('evb',undef,undef,$checkrole)) && + ($env{'request.role'} !~ m{^st\./$cdom/$cnum})) { + return; + } + } + } my @what=&Apache::lonnet::dump('critical', $env{'user.domain'}, $env{'user.name'}); &Apache::lonnet::appenv({'user.criticalcheck.time'=>time}); @@ -16061,14 +18249,324 @@ sub des_decrypt { } else { $cypher=new DES $keybin; } - my $plaintext= - $cypher->decrypt(unpack("a8",pack("H16",substr($cyphertext,0,16)))); - $plaintext.= - $cypher->decrypt(unpack("a8",pack("H16",substr($cyphertext,16,16)))); - $plaintext=substr($plaintext,1,ord(substr($plaintext,0,1)) ); + my $plaintext=''; + my $cypherlength = length($cyphertext); + my $numchunks = int($cypherlength/32); + for (my $j=0; $j<$numchunks; $j++) { + my $start = $j*32; + my $cypherblock = substr($cyphertext,$start,32); + my $chunk = + $cypher->decrypt(unpack("a8",pack("H16",substr($cypherblock,0,16)))); + $chunk .= + $cypher->decrypt(unpack("a8",pack("H16",substr($cypherblock,16,16)))); + $chunk=substr($chunk,1,ord(substr($chunk,0,1)) ); + $plaintext .= $chunk; + } return $plaintext; } +sub get_requested_shorturls { + my ($cdom,$cnum,$navmap) = @_; + return unless (ref($navmap)); + my ($numnew,$errors); + my @toshorten = &Apache::loncommon::get_env_multiple('form.addtiny'); + if (@toshorten) { + my (%maps,%resources,%titles); + &Apache::loncourserespicker::enumerate_course_contents($navmap,\%maps,\%resources,\%titles, + 'shorturls',$cdom,$cnum); + if (keys(%resources)) { + my %tocreate; + foreach my $item (sort {$a <=> $b} (@toshorten)) { + my $symb = $resources{$item}; + if ($symb) { + $tocreate{$cnum.'&'.$symb} = 1; + } + } + if (keys(%tocreate)) { + ($numnew,$errors) = &make_short_symbs($cdom,$cnum, + \%tocreate); + } + } + } + return ($numnew,$errors); +} + +sub make_short_symbs { + my ($cdom,$cnum,$tocreateref,$lockuser) = @_; + my ($numnew,@errors); + if (ref($tocreateref) eq 'HASH') { + my %tocreate = %{$tocreateref}; + if (keys(%tocreate)) { + my %coursetiny = &Apache::lonnet::dump('tiny',$cdom,$cnum); + my $su = Short::URL->new(no_vowels => 1); + my $init = ''; + my (%newunique,%addcourse,%courseonly,%failed); + # get lock on tiny db + my $now = time; + if ($lockuser eq '') { + $lockuser = $env{'user.name'}.':'.$env{'user.domain'}; + } + my $lockhash = { + "lock\0$now" => $lockuser, + }; + my $tries = 0; + my $gotlock = &Apache::lonnet::newput_dom('tiny',$lockhash,$cdom); + my ($code,$error); + while (($gotlock ne 'ok') && ($tries<3)) { + $tries ++; + sleep 1; + $gotlock = &Apache::lonnet::newput_dom('tiny',$lockhash,$cdom); + } + if ($gotlock eq 'ok') { + $init = &shorten_symbs($cdom,$init,$su,\%coursetiny,\%tocreate,\%newunique, + \%addcourse,\%courseonly,\%failed); + if (keys(%failed)) { + my $numfailed = scalar(keys(%failed)); + push(@errors,&mt('error: could not obtain unique six character URL for [quant,_1,resource]',$numfailed)); + } + if (keys(%newunique)) { + my $putres = &Apache::lonnet::newput_dom('tiny',\%newunique,$cdom); + if ($putres eq 'ok') { + $numnew = scalar(keys(%newunique)); + my $newputres = &Apache::lonnet::newput('tiny',\%addcourse,$cdom,$cnum); + unless ($newputres eq 'ok') { + push(@errors,&mt('error: could not store course look-up of short URLs')); + } + } else { + push(@errors,&mt('error: could not store unique six character URLs')); + } + } + my $dellockres = &Apache::lonnet::del_dom('tiny',["lock\0$now"],$cdom); + unless ($dellockres eq 'ok') { + push(@errors,&mt('error: could not release lockfile')); + } + } else { + push(@errors,&mt('error: could not obtain lockfile')); + } + if (keys(%courseonly)) { + my $result = &Apache::lonnet::newput('tiny',\%courseonly,$cdom,$cnum); + if ($result ne 'ok') { + push(@errors,&mt('error: could not update course look-up of short URLs')); + } + } + } + } + return ($numnew,\@errors); +} + +sub shorten_symbs { + my ($cdom,$init,$su,$coursetiny,$tocreate,$newunique,$addcourse,$courseonly,$failed) = @_; + return unless ((ref($su)) && (ref($coursetiny) eq 'HASH') && (ref($tocreate) eq 'HASH') && + (ref($newunique) eq 'HASH') && (ref($addcourse) eq 'HASH') && + (ref($courseonly) eq 'HASH') && (ref($failed) eq 'HASH')); + my (%possibles,%collisions); + foreach my $key (keys(%{$tocreate})) { + my $num = String::CRC32::crc32($key); + my $tiny = $su->encode($num,$init); + if ($tiny) { + $possibles{$tiny} = $key; + } + } + if (!$init) { + $init = 1; + } else { + $init ++; + } + if (keys(%possibles)) { + my @posstiny = keys(%possibles); + my $configuname = &Apache::lonnet::get_domainconfiguser($cdom); + my %currtiny = &Apache::lonnet::get('tiny',\@posstiny,$cdom,$configuname); + if (keys(%currtiny)) { + foreach my $key (keys(%currtiny)) { + next if ($currtiny{$key} eq ''); + if ($currtiny{$key} eq $possibles{$key}) { + my ($tcnum,$tsymb) = split(/\&/,$currtiny{$key}); + unless (($coursetiny->{$tsymb} eq $key) || ($addcourse->{$tsymb} eq $key) || ($courseonly->{$tsymb} eq $key)) { + $courseonly->{$tsymb} = $key; + } + } else { + $collisions{$possibles{$key}} = 1; + } + delete($possibles{$key}); + } + } + foreach my $key (keys(%possibles)) { + $newunique->{$key} = $possibles{$key}; + my ($tcnum,$tsymb) = split(/\&/,$possibles{$key}); + unless (($coursetiny->{$tsymb} eq $key) || ($addcourse->{$tsymb} eq $key) || ($courseonly->{$tsymb} eq $key)) { + $addcourse->{$tsymb} = $key; + } + } + } + if (keys(%collisions)) { + if ($init <5) { + if (!$init) { + $init = 1; + } else { + $init ++; + } + $init = &shorten_symbs($cdom,$init,$su,$coursetiny,\%collisions, + $newunique,$addcourse,$courseonly,$failed); + } else { + foreach my $key (keys(%collisions)) { + $failed->{$key} = 1; + } + } + } + return $init; +} + +sub is_nonframeable { + my ($url,$absolute,$hostname,$ip,$nocache) = @_; + my ($remprotocol,$remhost) = ($url =~ m{^(https?)\://(([a-z0-9]+(-[a-z0-9]+)*\.)+[a-z]{2,})}i); + return if (($remprotocol eq '') || ($remhost eq '')); + + $remprotocol = lc($remprotocol); + $remhost = lc($remhost); + my $remport = 80; + if ($remprotocol eq 'https') { + $remport = 443; + } + my ($result,$cached) = &Apache::lonnet::is_cached_new('noiframe',$remhost.':'.$remport); + if ($cached) { + unless ($nocache) { + if ($result) { + return 1; + } else { + return 0; + } + } + } + my $uselink; + my $request = new HTTP::Request('HEAD',$url); + my $response = &LONCAPA::LWPReq::makerequest('',$request,'','',5); + if ($response->is_success()) { + my $secpolicy = lc($response->header('content-security-policy')); + my $xframeop = lc($response->header('x-frame-options')); + $secpolicy =~ s/^\s+|\s+$//g; + $xframeop =~ s/^\s+|\s+$//g; + if (($secpolicy ne '') || ($xframeop ne '')) { + my $remotehost = $remprotocol.'://'.$remhost; + my ($origin,$protocol,$port); + if ($ENV{'SERVER_PORT'} =~/^\d+$/) { + $port = $ENV{'SERVER_PORT'}; + } else { + $port = 80; + } + if ($absolute eq '') { + $protocol = 'http:'; + if ($port == 443) { + $protocol = 'https:'; + } + $origin = $protocol.'//'.lc($hostname); + } else { + $origin = lc($absolute); + ($protocol,$hostname) = ($absolute =~ m{^(https?:)//([^/]+)$}); + } + if (($secpolicy) && ($secpolicy =~ /\Qframe-ancestors\E([^;]*)(;|$)/)) { + my $framepolicy = $1; + $framepolicy =~ s/^\s+|\s+$//g; + my @policies = split(/\s+/,$framepolicy); + if (@policies) { + if (grep(/^\Q'none'\E$/,@policies)) { + $uselink = 1; + } else { + $uselink = 1; + if ((grep(/^\Q*\E$/,@policies)) || (grep(/^\Q$protocol\E$/,@policies)) || + (($origin ne '') && (grep(/^\Q$origin\E$/,@policies))) || + (($ip ne '') && (grep(/^\Q$ip\E$/,@policies)))) { + undef($uselink); + } + if ($uselink) { + if (grep(/^\Q'self'\E$/,@policies)) { + if (($origin ne '') && ($remotehost eq $origin)) { + undef($uselink); + } + } + } + if ($uselink) { + my @possok; + if ($ip ne '') { + push(@possok,$ip); + } + my $hoststr = ''; + foreach my $part (reverse(split(/\./,$hostname))) { + if ($hoststr eq '') { + $hoststr = $part; + } else { + $hoststr = "$part.$hoststr"; + } + if ($hoststr eq $hostname) { + push(@possok,$hostname); + } else { + push(@possok,"*.$hoststr"); + } + } + if (@possok) { + foreach my $poss (@possok) { + last if (!$uselink); + foreach my $policy (@policies) { + if ($policy =~ m{^(\Q$protocol\E//|)\Q$poss\E(\Q:$port\E|)$}) { + undef($uselink); + last; + } + } + } + } + } + } + } + } elsif ($xframeop ne '') { + $uselink = 1; + my @policies = split(/\s*,\s*/,$xframeop); + if (@policies) { + unless (grep(/^deny$/,@policies)) { + if ($origin ne '') { + if (grep(/^sameorigin$/,@policies)) { + if ($remotehost eq $origin) { + undef($uselink); + } + } + if ($uselink) { + foreach my $policy (@policies) { + if ($policy =~ /^allow-from\s*(.+)$/) { + my $allowfrom = $1; + if (($allowfrom ne '') && ($allowfrom eq $origin)) { + undef($uselink); + last; + } + } + } + } + } + } + } + } + } + } + if ($nocache) { + if ($cached) { + my $devalidate; + if ($uselink && !$result) { + $devalidate = 1; + } elsif (!$uselink && $result) { + $devalidate = 1; + } + if ($devalidate) { + &Apache::lonnet::devalidate_cache_new('noiframe',$remhost.':'.$remport); + } + } + } else { + if ($uselink) { + $result = 1; + } else { + $result = 0; + } + &Apache::lonnet::do_cache_new('noiframe',$remhost.':'.$remport,$result,3600); + } + return $uselink; +} + 1; __END__;