--- loncom/interface/domainprefs.pm	2023/01/23 19:36:25	1.160.6.118.2.13
+++ loncom/interface/domainprefs.pm	2023/07/05 17:08:22	1.160.6.118.2.14
@@ -1,7 +1,7 @@
 # The LearningOnline Network with CAPA
 # Handler to set domain-wide configuration settings
 #
-# $Id: domainprefs.pm,v 1.160.6.118.2.13 2023/01/23 19:36:25 raeburn Exp $
+# $Id: domainprefs.pm,v 1.160.6.118.2.14 2023/07/05 17:08:22 raeburn Exp $
 #
 # Copyright Michigan State University Board of Trustees
 #
@@ -27,7 +27,7 @@
 #
 #
 ###############################################################
-##############################################################
+###############################################################
 
 =pod
 
@@ -104,8 +104,8 @@ $datatable  - HTML containing form eleme
 
 In the case of course requests, radio buttons are displayed for each institutional
 affiliate type (and also default, and _LC_adv) for each of the course types 
-(official, unofficial, community, and textbook).  In each case the radio buttons 
-allow the selection of one of four values:
+(official, unofficial, community, textbook, and lti).
+In each case the radio buttons allow the selection of one of four values:
 
 0, approval, validate, autolimit=N (where N is blank, or a positive integer).
 which have the following effects:
@@ -167,6 +167,7 @@ use Apache::lonmsg();
 use Apache::lonconfigsettings;
 use Apache::lonuserutils();
 use Apache::loncoursequeueadmin();
+use Apache::courseprefs();
 use LONCAPA qw(:DEFAULT :match);
 use LONCAPA::Enrollment;
 use LONCAPA::lonauthcgi();
@@ -174,7 +175,9 @@ use File::Copy;
 use Locale::Language;
 use DateTime::TimeZone;
 use DateTime::Locale;
+use Time::HiRes qw( sleep );
 use Net::CIDR;
+use Crypt::CBC;
 
 my $registered_cleanup;
 my $modified_urls;
@@ -218,15 +221,50 @@ sub handler {
                 'serverstatuses','requestcourses','helpsettings',
                 'coursedefaults','usersessions','loadbalancing',
                 'requestauthor','selfenrollment','inststatus',
-                'passwords','ltitools','ltisec','wafproxy','ipaccess'],$dom);
+                'passwords','ltitools','toolsec','lti','ltisec',
+                'wafproxy','ipaccess'],$dom);
     my %encconfig =
-        &Apache::lonnet::get_dom('encconfig',['ltitools','linkprot'],$dom,undef,1);
+        &Apache::lonnet::get_dom('encconfig',['ltitools','lti','linkprot'],$dom,undef,1);
+    my ($checked_is_home,$is_home);
     if (ref($domconfig{'ltitools'}) eq 'HASH') {
         if (ref($encconfig{'ltitools'}) eq 'HASH') {
+            my $home = &Apache::lonnet::domain($dom,'primary');
+            unless (($home eq 'no_host') || ($home eq '')) {
+                my @ids=&Apache::lonnet::current_machine_ids();
+                if (grep(/^\Q$home\E$/,@ids)) {
+                    $is_home = 1;
+                }
+            }
+            $checked_is_home = 1;
             foreach my $id (keys(%{$domconfig{'ltitools'}})) {
-                if (ref($domconfig{'ltitools'}{$id}) eq 'HASH') {
-                    foreach my $item ('key','secret') {
-                        $domconfig{'ltitools'}{$id}{$item} = $encconfig{'ltitools'}{$id}{$item};
+                if ((ref($domconfig{'ltitools'}{$id}) eq 'HASH') &&
+                    (ref($encconfig{'ltitools'}{$id}) eq 'HASH')) {
+                    $domconfig{'ltitools'}{$id}{'key'} = $encconfig{'ltitools'}{$id}{'key'};
+                    if (($is_home) && ($phase eq 'process')) {
+                        $domconfig{'ltitools'}{$id}{'secret'} = $encconfig{'ltitools'}{$id}{'secret'};
+                    }
+                }
+            }
+        }
+    }
+    if (ref($domconfig{'lti'}) eq 'HASH') {
+        if (ref($encconfig{'lti'}) eq 'HASH') {
+            unless ($checked_is_home) {
+                my $home = &Apache::lonnet::domain($dom,'primary');
+                unless (($home eq 'no_host') || ($home eq '')) {
+                    my @ids=&Apache::lonnet::current_machine_ids();
+                    if (grep(/^\Q$home\E$/,@ids)) {
+                        $is_home = 1;
+                    }
+                }
+                $checked_is_home = 1;
+            }
+            foreach my $id (keys(%{$domconfig{'lti'}})) {
+                if ((ref($domconfig{'lti'}{$id}) eq 'HASH') &&
+                    (ref($encconfig{'lti'}{$id}) eq 'HASH')) {
+                    $domconfig{'lti'}{$id}{'key'} = $encconfig{'lti'}{$id}{'key'};
+                    if (($is_home) && ($phase eq 'process')) {
+                        $domconfig{'lti'}{$id}{'secret'} = $encconfig{'lti'}{$id}{'secret'};
                     }
                 }
             }
@@ -541,12 +579,16 @@ sub handler {
         'ltitools' =>
                  {text => 'External Tools (LTI)',
                   help => 'Domain_Configuration_LTI_Tools',
-                  header => [{col1 => 'Setting',
-                              col2 => 'Value',}],
+                  header => [{col1 => 'Encryption of shared secrets',
+                              col2 => 'Settings'},
+                             {col1 => 'Rules for shared secrets',
+                              col2 => 'Settings'},
+                             {col1 => 'Providers',
+                              col2 => 'Settings',}],
                   print => \&print_ltitools,
                   modify => \&modify_ltitools,
                  },
-          'lti' =>
+        'lti' =>
                  {text => 'LTI Link Protection and LTI Consumers',
                   help => 'Domain_Configuration_LTI_Provider',
                   header => [{col1 => 'Encryption of shared secrets',
@@ -554,11 +596,13 @@ sub handler {
                              {col1 => 'Rules for shared secrets',
                               col2 => 'Settings'},
                              {col1 => 'Link Protectors',
+                              col2 => 'Settings'},
+                             {col1 => 'Consumers',
                               col2 => 'Settings'},],
                   print => \&print_lti,
                   modify => \&modify_lti,
                  },
-         'ipaccess' =>
+        'ipaccess' =>
                        {text => 'IP-based access control',
                         help => 'Domain_Configuration_IP_Access',
                         header => [{col1 => 'Setting',
@@ -753,12 +797,12 @@ sub process_changes {
         $output = &modify_usersessions($dom,$lastactref,%domconfig);
     } elsif ($action eq 'loadbalancing') {
         $output = &modify_loadbalancing($dom,%domconfig);
+    } elsif ($action eq 'ltitools') {
+        $output = &modify_ltitools($r,$dom,$action,$lastactref,%domconfig);
     } elsif ($action eq 'lti') {
         $output = &modify_lti($r,$dom,$action,$lastactref,%domconfig);
     } elsif ($action eq 'passwords') {
         $output = &modify_passwords($r,$dom,$confname,$lastactref,%domconfig);
-    } elsif ($action eq 'ltitools') {
-        $output = &modify_ltitools($r,$dom,$action,$lastactref,%domconfig);
     } elsif ($action eq 'wafproxy') {
         $output = &modify_wafproxy($dom,$action,$lastactref,%domconfig);
     } elsif ($action eq 'ipaccess') {
@@ -794,9 +838,9 @@ sub print_config_box {
             &Apache::lonuserutils::custom_roledefs_js($context,$crstype,$formname,\%full,
                                                       \@templateroles);
     } elsif ($action eq 'ltitools') {
-        $output .= &ltitools_javascript($settings);
+        $output .= &Apache::lonconfigsettings::ltitools_javascript($settings);
     } elsif ($action eq 'lti') {
-        $output .= &passwords_javascript('secrets')."\n".
+        $output .= &passwords_javascript('ltisecrets')."\n".
                    &lti_javascript($dom,$settings);
     } elsif ($action eq 'wafproxy') {
         $output .= &wafproxy_javascript($dom);
@@ -824,7 +868,7 @@ sub print_config_box {
     if ($numheaders > 1) {
         my $colspan = '';
         my $rightcolspan = '';
-        my $leftnobr = '';  
+        my $leftnobr = '';
         if (($action eq 'rolecolors') || ($action eq 'defaults') ||
             ($action eq 'directorysrch') ||
             (($action eq 'login') && ($numheaders < 5))) {
@@ -848,7 +892,8 @@ sub print_config_box {
         if (($action eq 'autoupdate') || ($action eq 'usercreation') || ($action eq 'selfcreation') ||
             ($action eq 'usermodification') || ($action eq 'defaults') || ($action eq 'coursedefaults') ||
             ($action eq 'selfenrollment') || ($action eq 'usersessions') || ($action eq 'directorysrch') ||
-            ($action eq 'helpsettings') || ($action eq 'contacts') || ($action eq 'wafproxy') || ($action eq 'lti')) {
+            ($action eq 'helpsettings') || ($action eq 'contacts') || ($action eq 'wafproxy') ||
+            ($action eq 'lti') || ($action eq 'ltitools')) {
             $output .= $item->{'print'}->('top',$dom,$settings,\$rowtotal);
         } elsif ($action eq 'passwords') {
             $output .= $item->{'print'}->('top',$dom,$confname,$settings,\$rowtotal);
@@ -884,7 +929,8 @@ sub print_config_box {
             ($action eq 'selfcreation') || ($action eq 'selfenrollment') ||
             ($action eq 'usersessions') || ($action eq 'coursecategories') ||
             ($action eq 'contacts') || ($action eq 'passwords') || 
-            ($action eq 'defaults') || ($action eq 'lti')) {
+            ($action eq 'defaults') || ($action eq 'lti') ||
+            ($action eq 'ltitools')) {
             if ($action eq 'coursecategories') {
                 $output .= &print_coursecategories('middle',$dom,$item,$settings,\$rowtotal);
                 $colspan = ' colspan="2"';
@@ -1120,7 +1166,7 @@ sub print_config_box {
             $output .= &print_quotas($dom,$settings,\$rowtotal,$action);
         } elsif (($action eq 'autoenroll') || ($action eq 'autocreate') || 
                  ($action eq 'serverstatuses') || ($action eq 'loadbalancing') ||
-                 ($action eq 'ltitools') || ($action eq 'ipaccess')) {
+                 ($action eq 'ipaccess')) {
             $output .= $item->{'print'}->($dom,$settings,\$rowtotal);
         }
     }
@@ -1140,7 +1186,6 @@ sub print_login {
         %lt = &login_file_options();
         $switchserver = &check_switchserver($dom,$confname);
     }
-
     if ($caller eq 'service') {
         my %servers = &Apache::lonnet::internet_dom_servers($dom);
         my $choice = $choices{'disallowlogin'};
@@ -2217,7 +2262,7 @@ sub print_quotas {
     my $typecount = 0;
     my ($css_class,%titles);
     if ($context eq 'requestcourses') {
-        @usertools = ('official','unofficial','community','textbook');
+        @usertools = ('official','unofficial','community','textbook','lti');
         @options =('norequest','approval','validate','autolimit');
         %validations = &Apache::lonnet::auto_courserequest_checks($dom);
         %titles = &courserequest_titles();
@@ -2684,7 +2729,7 @@ sub print_studentcode {
     my ($settings,$rowtotal) = @_;
     my $rownum = 0; 
     my ($output,%current);
-    my @crstypes = ('official','unofficial','community','textbook');
+    my @crstypes = ('official','unofficial','community','textbook','lti');
     if (ref($settings) eq 'HASH') {
         if (ref($settings->{'uniquecode'}) eq 'HASH') {
             foreach my $type (@crstypes) {
@@ -3015,6 +3060,30 @@ sub ltitools_toggle_js {
 function toggleLTITools(form,setting,item) {
     var radioname = '';
     var divid = '';
+    if ((setting == 'passback') || (setting == 'roster')) {
+        radioname = 'ltitools_'+setting+'_'+item;
+        divid = 'ltitools_'+setting+'time_'+item;
+        var num = form.elements[radioname].length;
+        if (num) {
+            var setvis = '';
+            for (var i=0; i<num; i++) {
+                if (form.elements[radioname][i].checked) {
+                    if (form.elements[radioname][i].value == '1') {
+                        if (document.getElementById(divid)) {
+                            document.getElementById(divid).style.display = 'inline-block';
+                        }
+                        setvis = 1;
+                    }
+                    break;
+                }
+            }
+        }
+        if (!setvis) {
+            if (document.getElementById(divid)) {
+                document.getElementById(divid).style.display = 'none';
+            }
+        }
+    }
     if (setting == 'user') {
         divid = 'ltitools_'+setting+'_div_'+item;
         var checkid = 'ltitools_'+setting+'_field_'+item;
@@ -3155,9 +3224,77 @@ sub lti_javascript {
     my ($dom,$settings) = @_;
     my $togglejs = &lti_toggle_js($dom);
     my $linkprot_js = &Apache::courseprefs::linkprot_javascript();
+    unless (ref($settings) eq 'HASH') {
+        return $togglejs.'
+<script type="text/javascript">
+// <![CDATA[
+
+'.$linkprot_js.'
+
+// ]]>
+</script>
+';
+    }
+    my (%ordered,$total,%jstext);
+    $total = scalar(keys(%{$settings}));
+    foreach my $item (keys(%{$settings})) {
+        if (ref($settings->{$item}) eq 'HASH') {
+            my $num = $settings->{$item}{'order'};
+            if ($num eq '') {
+                $num = $total - 1;
+            }
+            $ordered{$num} = $item;
+        }
+    }
+    my @jsarray = ();
+    foreach my $item (sort {$a <=> $b } (keys(%ordered))) {
+        push(@jsarray,$ordered{$item});
+    }
+    my $jstext = '    var lti = Array('."'".join("','",@jsarray)."'".');'."\n";
     return <<"ENDSCRIPT";
 <script type="text/javascript">
 // <![CDATA[
+function reorderLTI(form,item) {
+    var changedVal;
+$jstext
+    var newpos = 'lti_pos_add';
+    var maxh = 1 + $total;
+    var current = new Array;
+    var newitemVal = form.elements[newpos].options[form.elements[newpos].selectedIndex].value;
+    if (item == newpos) {
+        changedVal = newitemVal;
+    } else {
+        changedVal = form.elements[item].options[form.elements[item].selectedIndex].value;
+        current[newitemVal] = newpos;
+    }
+    for (var i=0; i<lti.length; i++) {
+        var elementName = 'lti_pos_'+lti[i];
+        if (elementName != item) {
+            if (form.elements[elementName]) {
+                var currVal = form.elements[elementName].options[form.elements[elementName].selectedIndex].value;
+                current[currVal] = elementName;
+            }
+        }
+    }
+    var oldVal;
+    for (var j=0; j<maxh; j++) {
+        if (current[j] == undefined) {
+            oldVal = j;
+        }
+    }
+    if (oldVal < changedVal) {
+        for (var k=oldVal+1; k<=changedVal ; k++) {
+           var elementName = current[k];
+           form.elements[elementName].selectedIndex = form.elements[elementName].selectedIndex - 1;
+        }
+    } else {
+        for (var k=changedVal; k<oldVal; k++) {
+            var elementName = current[k];
+            form.elements[elementName].selectedIndex = form.elements[elementName].selectedIndex + 1;
+        }
+    }
+    return;
+}
 
 $linkprot_js
 
@@ -3171,112 +3308,216 @@ ENDSCRIPT
 
 sub lti_toggle_js {
     my ($dom) = @_;
+    my %lcauthparmtext = &Apache::lonlocal::texthash (
+                            localauth => 'Local auth argument',
+                            krb       => 'Kerberos domain',
+                         );
+    my $crsincalert = &mt('"User\'s identity sent" needs to be set to "Yes" first,[_1] before setting "Course\'s identity sent" to "Yes"',"\n");
+    &js_escape(\$crsincalert);
     my %servers = &Apache::lonnet::get_servers($dom,'library');
     my $primary = &Apache::lonnet::domain($dom,'primary');
     my $course_servers = "'".join("','",keys(%servers))."'";
     return <<"ENDSCRIPT";
 <script type="text/javascript">
 // <![CDATA[
-function toggleLTIEncKey(form) {
-    var shownhosts = new Array();
-    var hiddenhosts = new Array();
-    var forcourse = new Array($course_servers);
-    var fromdomain = '$primary';
-    var crsradio = form.elements['ltisec_crslinkprot'];
-    if (crsradio.length) {
-        for (var i=0; i<crsradio.length; i++) {
-            if (crsradio[i].checked) {
-                if (crsradio[i].value == 1) {
-                    if (forcourse.length > 0) {
-                        for (var j=0; j<forcourse.length; j++) {
-                            if (!shownhosts.includes(forcourse[j])) {
-                                shownhosts.push(forcourse[j]);
-                            }
-                        }
+
+function toggleLTI(form,setting,item) {
+    if ((setting == 'requser') || (setting == 'crsinc')) {
+        var usrfieldsets = document.getElementsByClassName('ltioption_usr_'+item);
+        var setvis = '';
+        var radioname = 'lti_requser_'+item;
+        var num = form.elements[radioname].length;
+        if (num) {
+            for (var i=0; i<num; i++) {
+                if (form.elements[radioname][i].checked) {
+                    if (form.elements[radioname][i].value == '1') {
+                        setvis = 1;
+                        break;
                     }
-                } else {
-                    if (forcourse.length > 0) {
-                        for (var j=0; j<forcourse.length; j++) {
-                            if (!hiddenhosts.includes(forcourse[j])) {
-                                hiddenhosts.push(forcourse[j]);
+                }
+            }
+        }
+        if (usrfieldsets.length) {
+            for (var j=0; j<usrfieldsets.length; j++) {
+                if (setvis) {
+                    usrfieldsets[j].style.display = 'block';
+                } else {
+                    usrfieldsets[j].style.display = 'none';
+                }
+            }
+        }
+        var crsfieldsets = document.getElementsByClassName('ltioption_crs_'+item);
+        if (crsfieldsets.length) {
+            radioname = 'lti_crsinc_'+item;
+            var num = form.elements[radioname].length;
+            if (num) {
+                var crsvis = '';
+                for (var i=0; i<num; i++) {
+                    if (form.elements[radioname][i].checked) {
+                        if (form.elements[radioname][i].value == '1') {
+                            if (setvis == '') {
+                                if (setting == 'crsinc'){
+                                    alert("$crsincalert");
+                                    form.elements[radioname][0].checked = true;
+                                }
+                            } else {
+                                crsvis = 1;
                             }
+                            break;
                         }
                     }
                 }
+                setvis = crsvis;
             }
-        }
-    }
-    var domradio = form.elements['ltisec_domlinkprot'];
-    if (domradio.length) {
-        for (var i=0; i<domradio.length; i++) {
-            if (domradio[i].checked) {
-                if (domradio[i].value == 1) {
-                    if (!shownhosts.includes(fromdomain)) {
-                        shownhosts.push(fromdomain);
-                    }
-                } else {
-                    if (!hiddenhosts.includes(fromdomain)) {
-                        hiddenhosts.push(fromdomain);
-                    }
+            for (var j=0; j<crsfieldsets.length; j++) {
+                if (setvis) {
+                    crsfieldsets[j].style.display = 'block';
+                } else {
+                    crsfieldsets[j].style.display = 'none';
                 }
             }
         }
-    }
-    if (shownhosts.length > 0) {
-        for (var i=0; i<shownhosts.length; i++) {
-            if (document.getElementById('ltisec_info_'+shownhosts[i])) {
-                document.getElementById('ltisec_info_'+shownhosts[i]).style.display = 'block';
+    } else if ((setting == 'user') || (setting == 'crs') || (setting == 'passback') || (setting == 'callback')) {
+        var radioname = '';
+        var divid = '';
+        if (setting == 'user') {
+            radioname = 'lti_mapuser_'+item;
+            divid = 'lti_userfield_'+item;
+        } else if (setting == 'crs') {
+            radioname = 'lti_mapcrs_'+item;
+            divid = 'lti_crsfield_'+item;
+        } else if (setting == 'callback') {
+            radioname = 'lti_callback_'+item;
+            divid = 'lti_callbackfield_'+item;
+        } else {
+            radioname = 'lti_passback_'+item;
+            divid =  'lti_passback_'+item;
+        }
+        var num = form.elements[radioname].length;
+        if (num) {
+            var setvis = '';
+            for (var i=0; i<num; i++) {
+               if (form.elements[radioname][i].checked) {
+                   if ((setting == 'passback') || (setting == 'callback')) {
+                       if (form.elements[radioname][i].value == '1') {
+                           if (document.getElementById(divid)) {
+                               document.getElementById(divid).style.display = 'inline-block';
+                           }
+                           setvis = 1;
+                           break;
+                       }
+                   } else {
+                       if (form.elements[radioname][i].value == 'other') {
+                           if (document.getElementById(divid)) {
+                               document.getElementById(divid).style.display = 'inline-block';
+                           }
+                           setvis = 1;
+                           break;
+                       }
+                   }
+               }
+            }
+            if (!setvis) {
+                if (document.getElementById(divid)) {
+                    document.getElementById(divid).style.display = 'none';
+                }
             }
         }
-        if (document.getElementById('ltisec_noprivkey')) {
-            document.getElementById('ltisec_noprivkey').style.display = 'none';
-        }
-    } else {
-        if (document.getElementById('ltisec_noprivkey')) {
-            document.getElementById('ltisec_noprivkey').style.display = 'inline-block';
+    } else if ((setting == 'sec') || (setting == 'secsrc')) {
+        var numsec = form.elements['lti_crssec_'+item].length;
+        if (numsec) {
+            var setvis = '';
+            for (var i=0; i<numsec; i++) {
+                if (form.elements['lti_crssec_'+item][i].checked) {
+                    if (form.elements['lti_crssec_'+item][i].value == '1') {
+                        if (document.getElementById('lti_crssecfield_'+item)) {
+                            document.getElementById('lti_crssecfield_'+item).style.display = 'inline-block';
+                            setvis = 1;
+                            var numsrcsec = form.elements['lti_crssecsrc_'+item].length;
+                            if (numsrcsec) {
+                                var setsrcvis = '';
+                                for (var j=0; j<numsrcsec; j++) {
+                                    if (form.elements['lti_crssecsrc_'+item][j].checked) {
+                                        if (form.elements['lti_crssecsrc_'+item][j].value == 'other') {
+                                            if (document.getElementById('lti_secsrcfield_'+item)) {
+                                                document.getElementById('lti_secsrcfield_'+item).style.display = 'inline-block';
+                                                setsrcvis = 1;
+                                            }
+                                        }
+                                    }
+                                }
+                                if (!setsrcvis) {
+                                    if (document.getElementById('lti_secsrcfield_'+item)) {
+                                        document.getElementById('lti_secsrcfield_'+item).style.display = 'none';
+                                    }
+                                }
+                            }
+                        }
+                    }
+                }
+            }
+            if (!setvis) {
+                if (document.getElementById('lti_crssecfield_'+item)) {
+                    document.getElementById('lti_crssecfield_'+item).style.display = 'none';
+                }
+                if (document.getElementById('lti_secsrcfield_'+item)) {
+                    document.getElementById('lti_secsrcfield_'+item).style.display = 'none';
+                }
+            }
         }
-    }
-    if (hiddenhosts.length > 0) {
-        for (var i=0; i<hiddenhosts.length; i++) {
-            if (!shownhosts.includes(hiddenhosts[i])) {
-                if (document.getElementById('ltisec_info_'+hiddenhosts[i])) {
-                    document.getElementById('ltisec_info_'+hiddenhosts[i]).style.display = 'none';
+    } else if (setting == 'lcauth') {
+        var numauth = form.elements['lti_lcauth_'+item].length;
+        if (numauth) {
+            for (var i=0; i<numauth; i++) {
+                if (form.elements['lti_lcauth_'+item][i].checked) {
+                    if (document.getElementById('lti_'+setting+'_parmrow_'+item)) {
+                        if ((form.elements['lti_'+setting+'_'+item][i].value == 'internal') || (form.elements['lti_'+setting+'_'+item][i].value == 'lti')) {
+                            document.getElementById('lti_'+setting+'_parmrow_'+item).style.display = 'none';
+                        } else {
+                            document.getElementById('lti_'+setting+'_parmrow_'+item).style.display = 'table-row';
+                            if (document.getElementById('lti_'+setting+'_parmtext_'+item)) {
+                                if (form.elements['lti_'+setting+'_'+item][i].value == 'localauth') {
+                                    document.getElementById('lti_'+setting+'_parmtext_'+item).innerHTML = "$lcauthparmtext{'localauth'}";
+                                } else {
+                                    document.getElementById('lti_'+setting+'_parmtext_'+item).innerHTML = "$lcauthparmtext{'krb'}";
+                                }
+                            }
+                        }
+                    }
                 }
             }
         }
-    }
-    return;
-}
-
-function togglePrivKey(form,hostid) {
-    var radioname = '';
-    var currdivid = '';
-    var newdivid = '';
-    if ((document.getElementById('ltisec_divcurrprivkey_'+hostid)) &&
-        (document.getElementById('ltisec_divchgprivkey_'+hostid))) {
-        currdivid = document.getElementById('ltisec_divcurrprivkey_'+hostid);
-        newdivid = document.getElementById('ltisec_divchgprivkey_'+hostid);
-        radioname = form.elements['ltisec_changeprivkey_'+hostid];
-        if (radioname) {
-            if (radioname.length > 0) {
-                var setvis;
-                for (var i=0; i<radioname.length; i++) {
-                    if (radioname[i].checked == true) {
-                        if (radioname[i].value == 1) {
-                            newdivid.style.display = 'inline-block';
-                            currdivid.style.display = 'none';
+    } else if (setting == 'lcmenu') {
+        var menus = new Array('lti_topmenu_'+item,'lti_inlinemenu_'+item);
+        var divid = 'lti_menufield_'+item;
+        var setvis = '';
+        for (var i=0; i<menus.length; i++) {
+            var radioname = menus[i];
+            var num = form.elements[radioname].length;
+            if (num) {
+                for (var j=0; j<num; j++) {
+                    if (form.elements[radioname][j].checked) {
+                        if (form.elements[radioname][j].value == '1') {
+                            if (document.getElementById(divid)) {
+                                document.getElementById(divid).style.display = 'inline-block';
+                            }
                             setvis = 1;
+                            break;
                         }
-                        break;
                     }
                 }
-                if (!setvis) {
-                    newdivid.style.display = 'none';
-                    currdivid.style.display = 'inline-block';
-                }
+            }
+            if (setvis == 1) {
+                break;
+            }
+        }
+        if (!setvis) {
+            if (document.getElementById(divid)) {
+                document.getElementById(divid).style.display = 'none';
             }
         }
     }
+    return;
 }
 
 // ]]>
@@ -3595,8 +3836,8 @@ sub print_autoupdate {
                 $updateoff = ' ';
             }
         }
-        $enable = '<tr class="LC_odd_row">'. 
-                  '<td>'.&mt($choices{'run'}).'</td>'.
+        $enable = '<tr class="LC_odd_row">'.
+                  '<td>'.$choices{'run'}.'</td>'.
                   '<td class="LC_left_item"><span class="LC_nobreak"><label>'.
                   '<input type="radio" name="autoupdate_run"'.
                   $updateoff.'value="0" />'.&mt('No').'</label>&nbsp;'.
@@ -4230,7 +4471,6 @@ sub print_contacts {
             my $optionsprefix = 'LC_options_helpdesk_';
 
             my $onclicktypes = "toggleHelpdeskRow(this.form,'overrides','$customclass','$optionsprefix');";
-
             $datatable .= &insttypes_row($settings,$types,$usertypes,$dom,
                                          $numinrow,$othertitle,'overrides',
                                          \$rownum,$onclicktypes,$customclass);
@@ -4447,7 +4687,6 @@ sub print_helpsettings {
             push(@jsarray,('notinc','notexc'));
         }
         my $hiddenstr = join("','",@jsarray);
-        $datatable .= &helpsettings_javascript(\@roles_by_num,$maxnum,$hiddenstr,$formname);
         my $context = 'domprefs';
         my $crstype = 'Course';
         my $prefix = 'helproles_';
@@ -4818,10 +5057,10 @@ sub radiobutton_prefs {
                 $checkedon{$item}.' value="1"'.$onclick.' />'.&mt('Yes').'</label>';
         } else {
             $datatable .=
-            '<label><input type="radio" name="'.
-            $item.'" '.$checkedon{$item}.' value="1"'.$onclick.' />'.&mt('Yes').
-            '</label>&nbsp;<label><input type="radio" name="'.$item.'" '.
-            $checkedoff{$item}.' value="0"'.$onclick.' />'.&mt('No').'</label>';
+                '<label><input type="radio" name="'.
+                $item.'" '.$checkedon{$item}.' value="1"'.$onclick.' />'.&mt('Yes').
+                '</label>&nbsp;<label><input type="radio" name="'.$item.'" '.
+                $checkedoff{$item}.' value="0"'.$onclick.' />'.&mt('No').'</label>';
         }
         $datatable .= '</span>'.$additional.'</td></tr>';
         $itemcount ++;
@@ -4830,373 +5069,50 @@ sub radiobutton_prefs {
 }
 
 sub print_ltitools {
-    my ($dom,$settings,$rowtotal) = @_;
-    my $rownum = 0;
-    my $css_class;
-    my $itemcount = 1;
-    my $maxnum = 0;
-    my %ordered;
+    my ($position,$dom,$settings,$rowtotal) = @_;
+    my (%rules,%encrypt,%privkeys,%linkprot);
     if (ref($settings) eq 'HASH') {
-        foreach my $item (keys(%{$settings})) {
-            if (ref($settings->{$item}) eq 'HASH') {
-                my $num = $settings->{$item}{'order'};
-                $ordered{$num} = $item;
-            }
-        }
-    }
-    my $confname = $dom.'-domainconfig';
-    my $switchserver = &check_switchserver($dom,$confname);
-    my $maxnum = scalar(keys(%ordered));
-    my $datatable;
-    my %lt = &ltitools_names();
-    my @courseroles = ('cc','in','ta','ep','st');
-    my @ltiroles = qw(Instructor ContentDeveloper TeachingAssistant Learner);
-    my @fields = ('fullname','firstname','lastname','email','roles','user');
-    if (keys(%ordered)) {
-        my @items = sort { $a <=> $b } keys(%ordered);
-        for (my $i=0; $i<@items; $i++) {
-            $css_class = $itemcount%2?' class="LC_odd_row"':'';
-            my $item = $ordered{$items[$i]};
-            my ($title,$key,$secret,$url,$lifetime,$imgsrc,%sigsel);
-            if (ref($settings->{$item}) eq 'HASH') {
-                $title = $settings->{$item}->{'title'};
-                $url = $settings->{$item}->{'url'};
-                $key = $settings->{$item}->{'key'};
-                $secret = $settings->{$item}->{'secret'};
-                $lifetime = $settings->{$item}->{'lifetime'};
-                my $image = $settings->{$item}->{'image'};
-                if ($image ne '') {
-                    $imgsrc = '<img src="'.$image.'" alt="'.&mt('Tool Provider icon').'" />';
-                }
-                if ($settings->{$item}->{'sigmethod'} eq 'HMAC-256') {
-                    $sigsel{'HMAC-256'} = ' selected="selected"';
-                } else {
-                    $sigsel{'HMAC-SHA1'} = ' selected="selected"';
-                }
-            }
-            my $chgstr = ' onchange="javascript:reorderLTITools(this.form,'."'ltitools_".$item."'".');"';
-            $datatable .= '<tr '.$css_class.'><td><span class="LC_nobreak">'
-                         .'<select name="ltitools_'.$item.'"'.$chgstr.'>';
-            for (my $k=0; $k<=$maxnum; $k++) {
-                my $vpos = $k+1;
-                my $selstr;
-                if ($k == $i) {
-                    $selstr = ' selected="selected" ';
-                }
-                $datatable .= '<option value="'.$k.'"'.$selstr.'>'.$vpos.'</option>';
-            }
-            $datatable .= '</select>'.('&nbsp;'x2).
-                '<label><input type="checkbox" name="ltitools_del" value="'.$item.'" />'.
-                &mt('Delete?').'</label></span></td>'.
-                '<td colspan="2">'.
-                '<fieldset><legend>'.&mt('Required settings').'</legend>'.
-                '<span class="LC_nobreak">'.$lt{'title'}.':<input type="text" size="20" name="ltitools_title_'.$i.'" value="'.$title.'" /></span> '.
-                ('&nbsp;'x2).
-                '<span class="LC_nobreak">'.$lt{'version'}.':<select name="ltitools_version_'.$i.'">'.
-                '<option value="LTI-1p0" selected="selected">1.1</option></select></span> '.
-                ('&nbsp;'x2).
-                '<span class="LC_nobreak">'.$lt{'msgtype'}.':<select name="ltitools_msgtype_'.$i.'">'.
-                '<option value="basic-lti-launch-request" selected="selected">Launch</option></select></span> '.
-                ('&nbsp;'x2).
-                '<span class="LC_nobreak">'.$lt{'sigmethod'}.':<select name="ltitools_sigmethod_'.$i.'">'.
-                '<option value="HMAC-SHA1"'.$sigsel{'HMAC-SHA1'}.'>HMAC-SHA1</option>'.
-                '<option value="HMAC-SHA256"'.$sigsel{'HMAC-SHA256'}.'>HMAC-SHA256</option></select></span>'.
-                '<br /><br />'.
-                '<span class="LC_nobreak">'.$lt{'url'}.':<input type="text" size="40" name="ltitools_url_'.$i.'"'.
-                ' value="'.$url.'" /></span>'.
-                ('&nbsp;'x2).
-                '<span class="LC_nobreak">'.$lt{'key'}.':'.
-                '<input type="text" size="25" name="ltitools_key_'.$i.'" value="'.$key.'" /></span> '.
-                ('&nbsp;'x2).
-                '<span class="LC_nobreak">'.$lt{'lifetime'}.':'.
-                '<input type="text" size="5" name="ltitools_lifetime_'.$i.'" value="'.$lifetime.'" /></span> '.
-                ('&nbsp;'x2).
-                '<span class="LC_nobreak">'.$lt{'secret'}.':'.
-                '<input type="password" size="20" name="ltitools_secret_'.$i.'" value="'.$secret.'" />'.
-                '<label><input type="checkbox" name="visible" onclick="if (this.checked) { this.form.ltitools_secret_'.$i.'.type='."'text'".' } else { this.form.ltitools_secret_'.$i.'.type='."'password'".' }" />'.&mt('Visible input').'</label>'.
-                '<input type="hidden" name="ltitools_id_'.$i.'" value="'.$item.'" /></span>'.
-                '</fieldset>'.
-                '<fieldset><legend>'.&mt('Optional settings').'</legend>'.
-                '<span class="LC_nobreak">'.&mt('Display target:');
-            my %currdisp;
-            if (ref($settings->{$item}->{'display'}) eq 'HASH') {
-                if ($settings->{$item}->{'display'}->{'target'} eq 'window') {
-                    $currdisp{'window'} = ' checked="checked"';
-                } elsif ($settings->{$item}->{'display'}->{'target'} eq 'tab') {
-                    $currdisp{'tab'} = ' checked="checked"';
-                } else {
-                    $currdisp{'iframe'} = ' checked="checked"';
-                }
-                if ($settings->{$item}->{'display'}->{'width'} =~ /^(\d+)$/) {
-                    $currdisp{'width'} = $1;
-                }
-                if ($settings->{$item}->{'display'}->{'height'} =~ /^(\d+)$/) {
-                     $currdisp{'height'} = $1;
-                }
-                $currdisp{'linktext'} = $settings->{$item}->{'display'}->{'linktext'};
-                $currdisp{'explanation'} = $settings->{$item}->{'display'}->{'explanation'};
-            } else {
-                $currdisp{'iframe'} = ' checked="checked"';
-            }
-            foreach my $disp ('iframe','tab','window') {
-                $datatable .= '<label><input type="radio" name="ltitools_target_'.$i.'" value="'.$disp.'"'.$currdisp{$disp}.' />'.
-                              $lt{$disp}.'</label>'.('&nbsp;'x2);
-            }
-            $datatable .= ('&nbsp;'x4);
-            foreach my $dimen ('width','height') {
-                $datatable .= '<label>'.$lt{$dimen}.'&nbsp;'.
-                              '<input type="text" name="ltitools_'.$dimen.'_'.$i.'" size="5" value="'.$currdisp{$dimen}.'" /></label>'.
-                              ('&nbsp;'x2);
-            }
-            $datatable .= '</span><br />'.
-                          '<div class="LC_left_float">'.$lt{'linktext'}.'<br />'.
-                          '<input type="text" name="ltitools_linktext_'.$i.'" size="25" value="'.$currdisp{'linktext'}.'" /></div>'.
-                          '<div class="LC_left_float">'.$lt{'explanation'}.'<br />'.
-                          '<textarea name="ltitools_explanation_'.$i.'" rows="5" cols="40">'.$currdisp{'explanation'}.
-                          '</textarea></div><div style=""></div>'.
-                          '<div style="padding:0;clear:both;margin:0;border:0"></div>';
-            $datatable .= '<span class="LC_nobreak">'.$lt{'icon'}.':&nbsp;';
-            if ($imgsrc) {
-                $datatable .= $imgsrc.
-                              '<label><input type="checkbox" name="ltitools_image_del"'.
-                              ' value="'.$item.'" />'.&mt('Delete?').'</label></span> '.
-                              '<span class="LC_nobreak">&nbsp;'.&mt('Replace:').'&nbsp;';
-            } else {
-                $datatable .= '('.&mt('if larger than 21x21 pixels, image will be scaled').')&nbsp;';
-            }
-            if ($switchserver) {
-                $datatable .= &mt('Upload to library server: [_1]',$switchserver);
-            } else {
-                $datatable .= '<input type="file" name="ltitools_image_'.$i.'" value="" />';
-            }
-            $datatable .= '</span></fieldset>';
-            my (%checkedfields,%rolemaps,$userincdom);
-            if (ref($settings->{$item}) eq 'HASH') {
-                if (ref($settings->{$item}->{'fields'}) eq 'HASH') {
-                    %checkedfields = %{$settings->{$item}->{'fields'}};
-                }
-                $userincdom = $settings->{$item}->{'incdom'};
-                if (ref($settings->{$item}->{'roles'}) eq 'HASH') {
-                    %rolemaps = %{$settings->{$item}->{'roles'}};
-                    $checkedfields{'roles'} = 1;
-                }
-            }
-            $datatable .= '<fieldset><legend>'.&mt('User data sent on launch').'</legend>'.
-                          '<span class="LC_nobreak">';
-            my $userfieldstyle = 'display:none;';
-            my $seluserdom = '';
-            my $unseluserdom = ' selected="selected"';
-            foreach my $field (@fields) {
-                my ($checked,$onclick,$id,$spacer);
-                if ($checkedfields{$field}) {
-                    $checked = ' checked="checked"';
-                }
-                if ($field eq 'user') {
-                    $id = ' id="ltitools_user_field_'.$i.'"';
-                    $onclick = ' onclick="toggleLTITools(this.form,'."'$field','$i'".')"';
-                    if ($checked) {
-                        $userfieldstyle = 'display:inline-block';
-                        if ($userincdom) {
-                            $seluserdom = $unseluserdom;
-                            $unseluserdom = '';
-                        }
+        if ($position eq 'top') {
+            if (exists($settings->{'encrypt'})) {
+                if (ref($settings->{'encrypt'}) eq 'HASH') {
+                    foreach my $key (keys(%{$settings->{'encrypt'}})) {
+                        $encrypt{'toolsec_'.$key} = $settings->{'encrypt'}{$key};
                     }
-                } else {
-                    $spacer = ('&nbsp;' x2);
                 }
-                $datatable .= '<label>'.
-                              '<input type="checkbox" name="ltitools_fields_'.$i.'" value="'.$field.'"'.$id.$checked.$onclick.' />'.
-                              $lt{$field}.'</label>'.$spacer;
             }
-            $datatable .= '</span>';
-            $datatable .= '<div style="'.$userfieldstyle.'" id="ltitools_user_div_'.$i.'">'.
-                          '<span class="LC_nobreak"> : '.
-                          '<select name="ltitools_userincdom_'.$i.'">'.
-                          '<option value="">'.&mt('Select').'</option>'.
-                          '<option value="0"'.$unseluserdom.'>'.&mt('username').'</option>'.
-                          '<option value="1"'.$seluserdom.'>'.&mt('username:domain').'</option>'.
-                          '</select></span></div>';
-            $datatable .= '</fieldset>'.
-                          '<fieldset><legend>'.&mt('Role mapping').'</legend><table><tr>';
-            foreach my $role (@courseroles) {
-                my ($selected,$selectnone);
-                if (!$rolemaps{$role}) {
-                    $selectnone = ' selected="selected"';
-                }
-                $datatable .= '<td align="center">'.
-                              &Apache::lonnet::plaintext($role,'Course').'<br />'.
-                              '<select name="ltitools_roles_'.$role.'_'.$i.'">'.
-                              '<option value=""'.$selectnone.'>'.&mt('Select').'</option>';
-                foreach my $ltirole (@ltiroles) {
-                    unless ($selectnone) {
-                        if ($rolemaps{$role} eq $ltirole) {
-                            $selected = ' selected="selected"';
-                        } else {
-                            $selected = '';
+            if (exists($settings->{'private'})) {
+                if (ref($settings->{'private'}) eq 'HASH') {
+                    if (ref($settings->{'private'}) eq 'HASH') {
+                        if (ref($settings->{'private'}{'keys'}) eq 'ARRAY') {
+                            map { $privkeys{$_} = 1; } (@{$settings->{'private'}{'keys'}});
                         }
                     }
-                    $datatable .= '<option value="'.$ltirole.'"'.$selected.'>'.$ltirole.'</option>';
                 }
-                $datatable .= '</select></td>';
             }
-            $datatable .= '</tr></table></fieldset>';
-            my %courseconfig;
-            if (ref($settings->{$item}) eq 'HASH') {
-                if (ref($settings->{$item}->{'crsconf'}) eq 'HASH') {
-                    %courseconfig = %{$settings->{$item}->{'crsconf'}};
-                }
-            }
-            $datatable .= '<fieldset><legend>'.&mt('Configurable in course').'</legend><span class="LC_nobreak">';
-            foreach my $item ('label','title','target','linktext','explanation','append') {
-                my $checked;
-                if ($courseconfig{$item}) {
-                    $checked = ' checked="checked"';
+        } elsif ($position eq 'middle') {
+            if (exists($settings->{'rules'})) {
+                if (ref($settings->{'rules'}) eq 'HASH') {
+                    %rules = %{$settings->{'rules'}};
                 }
-                $datatable .= '<label>'.
-                       '<input type="checkbox" name="ltitools_courseconfig_'.$i.'" value="'.$item.'"'.$checked.' />'.
-                       $lt{'crs'.$item}.'</label>'.('&nbsp;' x2)."\n";
             }
-            $datatable .= '</span></fieldset>'.
-                          '<fieldset><legend>'.&mt('Custom items sent on launch').'</legend>'.
-                          '<table><tr><th>'.&mt('Action').'</th><th>'.&mt('Name').'</th><th>'.&mt('Value').'</th></tr>';
-            if (ref($settings->{$item}->{'custom'}) eq 'HASH') {
-                my %custom = %{$settings->{$item}->{'custom'}};
-                if (keys(%custom) > 0) {
-                    foreach my $key (sort(keys(%custom))) {
-                        $datatable .= '<tr><td><span class="LC_nobreak">'.
-                                      '<label><input type="checkbox" name="ltitools_customdel_'.$i.'" value="'.
-                                      $key.'" />'.&mt('Delete').'</label></span></td><td>'.$key.'</td>'.
-                                      '<td><input type="text" name="ltitools_customval_'.$key.'_'.$i.'"'.
-                                      ' value="'.$custom{$key}.'" /></td></tr>';
-                    }
+        } else {
+            foreach my $key ('encrypt','private','rules') {
+                if (exists($settings->{$key})) {
+                    delete($settings->{$key});
                 }
             }
-            $datatable .= '<tr><td><span class="LC_nobreak">'.
-                          '<label><input type="checkbox" name="ltitools_customadd" value="'.$i.'" />'.
-                          &mt('Add').'</label></span></td><td><input type="text" name="ltitools_custom_name_'.$i.'" />'.
-                          '</td><td><input type="text" name="ltitools_custom_value_'.$i.'" /></td></tr>';
-            $datatable .= '</table></fieldset></td></tr>'."\n";
-            $itemcount ++;
         }
     }
-    $css_class = $itemcount%2?' class="LC_odd_row"':'';
-    my $chgstr = ' onchange="javascript:reorderLTITools(this.form,'."'ltitools_add_pos'".');"';
-    $datatable .= '<tr '.$css_class.'><td><span class="LC_nobreak">'."\n".
-                  '<input type="hidden" name="ltitools_maxnum" value="'.$maxnum.'" />'."\n".
-                  '<select name="ltitools_add_pos"'.$chgstr.'>';
-    for (my $k=0; $k<$maxnum+1; $k++) {
-        my $vpos = $k+1;
-        my $selstr;
-        if ($k == $maxnum) {
-            $selstr = ' selected="selected" ';
-        }
-        $datatable .= '<option value="'.$k.'"'.$selstr.'>'.$vpos.'</option>';
+    my $datatable;
+    my $itemcount = 1;
+    if ($position eq 'top') {
+        $datatable = &secrets_form($dom,'toolsec',\%encrypt,\%privkeys,$rowtotal);
+    } elsif ($position eq 'middle') {
+        $datatable = &password_rules('toolsecrets',\$itemcount,\%rules);
+        $$rowtotal += $itemcount;
+    } else {
+        $datatable = &Apache::courseprefs::print_ltitools($dom,'',$settings,\$rowtotal,'','','domain');
     }
-    $datatable .= '</select>&nbsp;'."\n".
-                  '<input type="checkbox" name="ltitools_add" value="1" />'.&mt('Add').'</span></td>'."\n".
-                  '<td colspan="2">'.
-                  '<fieldset><legend>'.&mt('Required settings').'</legend>'.
-                  '<span class="LC_nobreak">'.$lt{'title'}.':<input type="text" size="20" name="ltitools_add_title" value="" /></span> '."\n".
-                  ('&nbsp;'x2).
-                  '<span class="LC_nobreak">'.$lt{'version'}.':<select name="ltitools_add_version">'.
-                  '<option value="LTI-1p0" selected="selected">1.1</option></select></span> '."\n".
-                  ('&nbsp;'x2).
-                  '<span class="LC_nobreak">'.$lt{'msgtype'}.':<select name="ltitools_add_msgtype">'.
-                  '<option value="basic-lti-launch-request" selected="selected">Launch</option></select></span> '.
-                  '<span class="LC_nobreak">'.$lt{'sigmethod'}.':<select name="ltitools_add_sigmethod">'.
-                  '<option value="HMAC-SHA1" selected="selected">HMAC-SHA1</option>'.
-                  '<option value="HMAC-SHA256">HMAC-SHA256</option></select></span>'.
-                  '<br />'.
-                  '<span class="LC_nobreak">'.$lt{'url'}.':<input type="text" size="40" name="ltitools_add_url" value="" /></span> '."\n".
-                  ('&nbsp;'x2).
-                  '<span class="LC_nobreak">'.$lt{'key'}.':<input type="text" size="25" name="ltitools_add_key" value="" /></span> '."\n".
-                  ('&nbsp;'x2).
-                  '<span class="LC_nobreak">'.$lt{'lifetime'}.':<input type="text" size="5" name="ltitools_add_lifetime" value="300" /></span> '."\n".
-                  ('&nbsp;'x2).
-                  '<span class="LC_nobreak">'.$lt{'secret'}.':<input type="password" size="20" name="ltitools_add_secret" value="" />'.
-                  '<label><input type="checkbox" name="visible" onclick="if (this.checked) { this.form.ltitools_add_secret.type='."'text'".' } else { this.form.ltitools_add_secret.type='."'password'".' }" />'.&mt('Visible input').'</label></span> '."\n".
-                  '</fieldset>'.
-                  '<fieldset><legend>'.&mt('Optional settings').'</legend>'.
-                  '<span class="LC_nobreak">'.&mt('Display target:');
-    my %defaultdisp;
-    $defaultdisp{'iframe'} = ' checked="checked"';
-    foreach my $disp ('iframe','tab','window') {
-        $datatable .= '<label><input type="radio" name="ltitools_add_target" value="'.$disp.'"'.$defaultdisp{$disp}.' />'.
-                      $lt{$disp}.'</label>'.('&nbsp;'x2);
-    }
-    $datatable .= ('&nbsp;'x4);
-    foreach my $dimen ('width','height') {
-        $datatable .= '<label>'.$lt{$dimen}.'&nbsp;'.
-                      '<input type="text" name="ltitools_add_'.$dimen.'" size="5" /></label>'.
-                      ('&nbsp;'x2);
-    }
-    $datatable .= '</span><br />'.
-                  '<div class="LC_left_float">'.$lt{'linktext'}.'<br />'.
-                  '<input type="text" name="ltitools_add_linktext" size="5" /></div>'.
-                  '<div class="LC_left_float">'.$lt{'explanation'}.'<br />'.
-                  '<textarea name="ltitools_add_explanation" rows="5" cols="40"></textarea>'.
-                  '</div><div style=""></div>'.
-                  '<div style="padding:0;clear:both;margin:0;border:0"></div>';
-    $datatable .= '<span class="LC_nobreak">'.$lt{'icon'}.':&nbsp;'.
-                  '('.&mt('if larger than 21x21 pixels, image will be scaled').')&nbsp;';
-    if ($switchserver) {
-        $datatable .= &mt('Upload to library server: [_1]',$switchserver);
-    } else {
-        $datatable .= '<input type="file" name="ltitools_add_image" value="" />';
-    }
-    $datatable .= '</span></fieldset>'.
-                  '<fieldset><legend>'.&mt('User data sent on launch').'</legend>'.
-                  '<span class="LC_nobreak">';
-    foreach my $field (@fields) {
-        my ($id,$onclick,$spacer);
-        if ($field eq 'user') {
-            $id = ' id="ltitools_user_field_add"';
-            $onclick = ' onclick="toggleLTITools(this.form,'."'$field','add'".')"';
-        } else {
-            $spacer = ('&nbsp;' x2);
-        }
-        $datatable .= '<label>'.
-                      '<input type="checkbox" name="ltitools_add_fields" value="'.$field.'"'.$id.$onclick.' />'.
-                      $lt{$field}.'</label>'.$spacer;
-    }
-    $datatable .= '</span>'.
-                  '<div style="display:none;" id="ltitools_user_div_add">'.
-                  '<span class="LC_nobreak"> : '.
-                  '<select name="ltitools_userincdom_add">'.
-                  '<option value="" selected="selected">'.&mt('Select').'</option>'.
-                  '<option value="0">'.&mt('username').'</option>'.
-                  '<option value="1">'.&mt('username:domain').'</option>'.
-                  '</select></span></div></fieldset>';
-    $datatable .= '<fieldset><legend>'.&mt('Role mapping').'</legend><table><tr>';
-    foreach my $role (@courseroles) {
-        my ($checked,$checkednone);
-        $datatable .= '<td align="center">'.
-                      &Apache::lonnet::plaintext($role,'Course').'<br />'.
-                      '<select name="ltitools_add_roles_'.$role.'">'.
-                      '<option value="" selected="selected">'.&mt('Select').'</option>';
-        foreach my $ltirole (@ltiroles) {
-            $datatable .= '<option value="'.$ltirole.'">'.$ltirole.'</option>';
-        }
-        $datatable .= '</select></td>';
-    }
-    $datatable .= '</tr></table></fieldset>'.
-                  '<fieldset><legend>'.&mt('Configurable in course').'</legend><span class="LC_nobreak">';
-    foreach my $item ('label','title','target','linktext','explanation','append') {
-        $datatable .= '<label>'.
-                      '<input type="checkbox" name="ltitools_courseconfig" value="'.$item.'" checked="checked" />'.
-                      $lt{'crs'.$item}.'</label>'.('&nbsp;' x2)."\n";
-    }
-    $datatable .= '</span></fieldset>'.
-                  '<fieldset><legend>'.&mt('Custom items sent on launch').'</legend>'.
-                  '<table><tr><th>'.&mt('Action').'</th><th>'.&mt('Name').'</th><th>'.&mt('Value').'</th></tr>'.
-                  '<tr><td><span class="LC_nobreak">'.
-                  '<label><input type="checkbox" name="ltitools_add_custom" value="1" />'.
-                  &mt('Add').'</label></span></td><td><input type="text" name="ltitools_add_custom_name" />'.
-                  '</td><td><input type="text" name="ltitools_add_custom_value" /></td></tr>'.
-                  '</table></fieldset>'."\n".
-                  '</td>'."\n".
-                  '</tr>'."\n";
-    $itemcount ++;
     return $datatable;
 }
 
@@ -5224,6 +5140,8 @@ sub ltitools_names {
                                           'width'          => 'Width',
                                           'linktext'       => 'Default Link Text',
                                           'explanation'    => 'Default Explanation',
+                                          'passback'       => 'Tool can return grades:',
+                                          'roster'         => 'Tool can retrieve roster:',
                                           'crstarget'      => 'Display target',
                                           'crslabel'       => 'Course label',
                                           'crstitle'       => 'Course title',
@@ -5231,10 +5149,126 @@ sub ltitools_names {
                                           'crsexplanation' => 'Explanation',
                                           'crsappend'      => 'Provider URL',
                                         );
-
     return %lt;
 }
 
+sub secrets_form {
+    my ($dom,$context,$encrypt,$privkeys,$rowtotal) = @_;
+    my @ids=&Apache::lonnet::current_machine_ids();
+    my %servers = &Apache::lonnet::get_servers($dom,'library');
+    my $primary = &Apache::lonnet::domain($dom,'primary');
+    my ($css_class,$extra,$numshown,$itemcount,$output);
+    $itemcount = 0;
+    foreach my $hostid (sort(keys(%servers))) {
+        my ($showextra,$divsty,$switch);
+        if ($hostid eq $primary) {
+            if ($context eq 'ltisec') {
+                if (($encrypt->{'ltisec_consumers'}) || ($encrypt->{'ltisec_domlinkprot'})) {
+                    $showextra = 1;
+                }
+                if ($encrypt->{'ltisec_crslinkprot'}) {
+                    $showextra = 1;
+                }
+            } else {
+                if (($encrypt->{'toolsec_crs'}) || ($encrypt->{'toolsec_dom'})) {
+                    $showextra = 1;
+                }
+            }
+            unless (grep(/^\Q$hostid\E$/,@ids)) {
+                $switch = 1;
+            }
+            if ($showextra) {
+                $numshown ++;
+                $divsty = 'display:inline-block';
+            } else {
+                $divsty = 'display:none';
+            }
+            $extra .= '<fieldset id="'.$context.'_info_'.$hostid.'" style="'.$divsty.'">'.
+                      '<legend>'.$hostid.'</legend>';
+            if ($switch) {
+                my $switchserver = '<a href="/adm/switchserver?otherserver='.$hostid.'&amp;role='.
+                                   &HTML::Entities::encode($env{'request.role'},'\'<>"&').
+                                   '&amp;destinationurl=/adm/domainprefs">'.&mt('Switch Server').'</a>';
+                if (exists($privkeys->{$hostid})) {
+                    $extra .= '<div id="'.$context.'_divcurrprivkey_'.$hostid.'" style="display:inline-block" />'.
+                              '<span class="LC_nobreak">'.
+                              &mt('Encryption Key').': ['.&mt('not shown').'] '.('&nbsp;'x2).'</span></div>'.
+                              '<span class="LC_nobreak">'.&mt('Change?').
+                              '<label><input type="radio" value="0" name="'.$context.'_changeprivkey_'.$hostid.'" onclick="javascript:togglePrivKey(this.form,'."'$context','$hostid'".');" checked="checked" />'.&mt('No').'</label>'.
+                              ('&nbsp;'x2).
+                              '<label><input type="radio" value="1" name="'.$context.'_changeprivkey_'.$hostid.'" onclick="javascript:togglePrivKey(this.form,'."'$context','$hostid'".');" />'.&mt('Yes').
+                              '</label>&nbsp;&nbsp;</span><div id="'.$context.'_divchgprivkey_'.$hostid.'" style="display:none" />'.
+                              '<span class="LC_nobreak"> - '.&mt('submit from server ([_1]): [_2].',$hostid,$switchserver).
+                              '</span></div>';
+                } else {
+                    $extra .= '<span class="LC_nobreak">'.
+                              &mt('Key required').' - '.&mt('submit from server ([_1]): [_2].',$hostid,$switchserver).
+                              '</span>'."\n";
+                }
+            } elsif (exists($privkeys->{$hostid})) {
+                $extra .= '<div id="'.$context.'_divcurrprivkey_'.$hostid.'" style="display:inline-block" /><span class="LC_nobreak">'.
+                          &mt('Encryption Key').': ['.&mt('not shown').'] '.('&nbsp;'x2).'</span></div>'.
+                          '<span class="LC_nobreak">'.&mt('Change?').
+                          '<label><input type="radio" value="0" name="'.$context.'_changeprivkey_'.$hostid.'" onclick="javascript:togglePrivKey(this.form,'."'$context','$hostid'".');" checked="checked" />'.&mt('No').'</label>'.
+                          ('&nbsp;'x2).
+                          '<label><input type="radio" value="1" name="'.$context.'_changeprivkey_'.$hostid.'" onclick="javascript:togglePrivKey(this.form,'."'$context','$hostid'".');" />'.&mt('Yes').
+                          '</label>&nbsp;&nbsp;</span><div id="'.$context.'_divchgprivkey_'.$hostid.'" style="display:none" />'.
+                          '<span class="LC_nobreak">'.&mt('New Key').':'.
+                          '<input type="password" size="20" name="'.$context.'_privkey_'.$hostid.'" value="" autocomplete="new-password" />'.
+                          '<label><input type="checkbox" name="visible" onclick="if (this.checked) { this.form.'.$context.'_privkey_'.$hostid.'.type='."'text'".' } else { this.form.'.$context.'_privkey_'.$hostid.'.type='."'password'".' }" />'.&mt('Visible input').'</label>'.
+                          '</span></div>';
+            } else {
+                $extra .= '<span class="LC_nobreak">'.&mt('Encryption Key').':'.
+                          '<input type="password" size="20" name="'.$context.'_privkey_'.$hostid.'" value="" autocomplete="new-password" />'.
+                          '<label><input type="checkbox" name="visible" onclick="if (this.checked) { this.form.'.$context.'_privkey_'.$hostid.'.type='."'text'".' } else { this.form.'.$context.'_privkey_'.$hostid.'.type='."'password'".' }" />'.&mt('Visible input').'</label>';
+            }
+            $extra .= '</fieldset>';
+        }
+    }
+    my (%choices,@toggles,%defaultchecked);
+    if ($context eq 'ltisec') {
+        %choices = &Apache::lonlocal::texthash (
+                                                  ltisec_crslinkprot => 'Encrypt stored link protection secrets defined in courses',
+                                                  ltisec_domlinkprot => 'Encrypt stored link protection secrets defined in domain',
+                                                  ltisec_consumers   => 'Encrypt stored consumer secrets defined in domain',
+                                               );
+        @toggles = qw(ltisec_crslinkprot ltisec_domlinkprot ltisec_consumers);
+        %defaultchecked = (
+                           'ltisec_crslinkprot' => 'off',
+                           'ltisec_domlinkprot' => 'off',
+                           'ltisec_consumers'   => 'off',
+                          );
+    } else {
+        %choices = &Apache::lonlocal::texthash (
+                                                  toolsec_crs => 'Encrypt stored external tool secrets defined in courses',
+                                                  toolsec_dom => 'Encrypt stored external tool secrets defined in domain',
+                                               );
+        @toggles = qw(toolsec_crs toolsec_dom);
+        %defaultchecked = (
+                           'toolsec_crs' => 'off',
+                           'toolsec_dom' => 'off',
+                          );
+    }
+    my ($onclick,$itemcount);
+    $onclick = 'javascript:toggleLTIEncKey(this.form,'."'$context'".');';
+    ($output,$itemcount) = &radiobutton_prefs($encrypt,\@toggles,\%defaultchecked,
+                                              \%choices,$itemcount,$onclick,'','left','no');
+
+    $css_class = $itemcount%2?' class="LC_odd_row"':'';
+    my $noprivkeysty = 'display:inline-block';
+    if ($numshown) {
+        $noprivkeysty = 'display:none';
+    }
+    $output .= '<tr '.$css_class.'><td><span class="LC_nobreak">'.&mt('Encryption Key(s)').'</td>'.
+               '<td><div id="'.$context.'_noprivkey" style="'.$noprivkeysty.'" >'.
+               '<span class="LC_nobreak">'.&mt('Not in use').'</span></div>'.
+               $extra.
+               '</td></tr>';
+    $itemcount ++;
+    $$rowtotal += $itemcount;
+    return $output;
+}
+
 sub print_lti {
     my ($position,$dom,$settings,$rowtotal) = @_;
     my $itemcount = 1;
@@ -5245,7 +5279,11 @@ sub print_lti {
             if (exists($settings->{'encrypt'})) {
                 if (ref($settings->{'encrypt'}) eq 'HASH') {
                     foreach my $key (keys(%{$settings->{'encrypt'}})) {
-                        $encrypt{'ltisec_'.$key.'linkprot'} = $settings->{'encrypt'}{$key};
+                        if ($key eq 'consumers') {
+                            $encrypt{'ltisec_'.$key} = $settings->{'encrypt'}{$key};
+                        } else {
+                            $encrypt{'ltisec_'.$key.'linkprot'} = $settings->{'encrypt'}{$key};
+                        }
                     }
                 }
             }
@@ -5264,7 +5302,7 @@ sub print_lti {
                     %rules = %{$settings->{'rules'}};
                 }
             }
-        } elsif ($position eq 'bottom') {
+        } elsif ($position eq 'lower') {
             if (exists($settings->{'linkprot'})) {
                 if (ref($settings->{'linkprot'}) eq 'HASH') {
                     %linkprot = %{$settings->{'linkprot'}};
@@ -5273,108 +5311,608 @@ sub print_lti {
                     }
                 }
             }
+        } else {
+            foreach my $key ('encrypt','private','rules','linkprot') {
+                if (exists($settings->{$key})) {
+                    delete($settings->{$key});
+                }
+            }
         }
     }
     if ($position eq 'top') {
-        my @ids=&Apache::lonnet::current_machine_ids();
-        my %servers = &Apache::lonnet::get_servers($dom,'library');
-        my $primary = &Apache::lonnet::domain($dom,'primary');
-        my ($extra,$numshown);
-        foreach my $hostid (sort(keys(%servers))) {
-            my ($showextra,$divsty,$switch);
-            if ($hostid eq $primary) {
-                if ($encrypt{'ltisec_domlinkprot'}) {
-                    $showextra = 1;
+        $datatable = &secrets_form($dom,'ltisec',\%encrypt,\%privkeys,$rowtotal);
+    } elsif ($position eq 'middle') {
+        $datatable = &password_rules('ltisecrets',\$itemcount,\%rules);
+        $$rowtotal += $itemcount;
+    } elsif ($position eq 'lower') {
+         $datatable .= &Apache::courseprefs::print_linkprotection($dom,'',$settings,$rowtotal,'','','domain');
+    } else {
+        my ($switchserver,$switchmessage);
+        $switchserver = &check_switchserver($dom);
+        $switchmessage = &mt("submit from domain's primary library server: [_1].",$switchserver);
+        my $maxnum = 0;
+        my %ordered;
+        if (ref($settings) eq 'HASH') {
+            foreach my $item (keys(%{$settings})) {
+                if (ref($settings->{$item}) eq 'HASH') {
+                    my $num = $settings->{$item}{'order'};
+                    if ($num eq '') {
+                        $num = scalar(keys(%{$settings}));
+                    }
+                    $ordered{$num} = $item;
                 }
             }
-            if ($encrypt{'ltisec_crslinkprot'}) {
-                $showextra = 1;
+        }
+        $maxnum = scalar(keys(%ordered));
+        my %lt = &lti_names();
+        if (keys(%ordered)) {
+            my @items = sort { $a <=> $b } keys(%ordered);
+            for (my $i=0; $i<@items; $i++) {
+                $css_class = $itemcount%2?' class="LC_odd_row"':'';
+                my $item = $ordered{$items[$i]};
+                my ($key,$secret,$usable,$lifetime,$consumer,$requser,$crsinc,$current);
+                if (ref($settings->{$item}) eq 'HASH') {
+                    $key = $settings->{$item}->{'key'};
+                    $usable = $settings->{$item}->{'usable'};
+                    $lifetime = $settings->{$item}->{'lifetime'};
+                    $consumer = $settings->{$item}->{'consumer'};
+                    $requser = $settings->{$item}->{'requser'};
+                    $crsinc = $settings->{$item}->{'crsinc'};
+                    $current = $settings->{$item};
+                }
+                my $onclickrequser = ' onclick="toggleLTI(this.form,'."'requser','$i'".');"';
+                my %checkedrequser = (
+                                       yes => ' checked="checked"',
+                                       no  => '',
+                                     );
+                if (!$requser) {
+                    $checkedrequser{'no'} = $checkedrequser{'yes'};
+                    $checkedrequser{'yes'} = '';
+                }
+                my $onclickcrsinc = ' onclick="toggleLTI(this.form,'."'crsinc','$i'".');"';
+                my %checkedcrsinc = (
+                                      yes => ' checked="checked"',
+                                      no  => '',
+                                    );
+                if (!$crsinc) {
+                    $checkedcrsinc{'no'} = $checkedcrsinc{'yes'};
+                    $checkedcrsinc{'yes'} = '';
+                }
+                my $chgstr = ' onchange="javascript:reorderLTI(this.form,'."'lti_pos_".$item."'".');"';
+                $datatable .= '<tr '.$css_class.'><td><span class="LC_nobreak">'
+                             .'<select name="lti_pos_'.$item.'"'.$chgstr.'>';
+                for (my $k=0; $k<=$maxnum; $k++) {
+                    my $vpos = $k+1;
+                    my $selstr;
+                    if ($k == $i) {
+                        $selstr = ' selected="selected" ';
+                    }
+                    $datatable .= '<option value="'.$k.'"'.$selstr.'>'.$vpos.'</option>';
+                }
+                $datatable .= '</select>'.('&nbsp;'x2).
+                    '<label><input type="checkbox" name="lti_del" value="'.$item.'" />'.
+                    &mt('Delete?').'</label></span></td>'.
+                    '<td colspan="2">'.
+                    '<fieldset><legend>'.&mt('Required settings').'</legend>'.
+                    '<span class="LC_nobreak">'.$lt{'consumer'}.
+                    ':<input type="text" size="15" name="lti_consumer_'.$i.'" value="'.$consumer.'" /></span> '.
+                    ('&nbsp;'x2).
+                    '<span class="LC_nobreak">'.$lt{'version'}.':<select name="lti_version_'.$i.'">'.
+                    '<option value="LTI-1p0" selected="selected">1.1</option></select></span> '.
+                    ('&nbsp;'x2).
+                    '<span class="LC_nobreak">'.$lt{'lifetime'}.':<input type="text" name="lti_lifetime_'.$i.'"'.
+                    'value="'.$lifetime.'" size="3" /></span><br /><br />';
+                if ($key ne '') {
+                    $datatable .= '<span class="LC_nobreak">'.$lt{'key'};
+                    if ($switchserver) {
+                        $datatable .= ': ['.&mt('[_1] to view/edit',$switchserver).']';
+                    } else {
+                        $datatable .= ':<input type="text" size="25" name="lti_key_'.$i.'" value="'.$key.'" autocomplete="off" />';
+                    }
+                    $datatable .= '</span> '.('&nbsp;'x2);
+                } elsif (!$switchserver) {
+                    $datatable .= '<span class="LC_nobreak">'.$lt{'key'}.':'.
+                                  '<input type="text" size="25" name="lti_key_'.$i.'" value="'.$key.'" autocomplete="off" />'.
+                                  '</span> '.('&nbsp;'x2);
+                }
+                if ($switchserver) {
+                    if ($usable ne '') {
+                        $datatable .= '<div id="lti_divcurrsecret_'.$i.'" style="display:inline-block" /><span class="LC_nobreak">'.
+                                      $lt{'secret'}.': ['.&mt('not shown').'] '.('&nbsp;'x2).'</span></div>'.
+                                      '<span class="LC_nobreak">'.&mt('Change secret?').
+                                      '<label><input type="radio" value="0" name="lti_changesecret_'.$i.'" onclick="javascript:toggleChgSecret(this.form,'."'$i','secret','lti'".');" checked="checked" />'.&mt('No').'</label>'.
+                                      ('&nbsp;'x2).
+                                     '<label><input type="radio" value="1" name="lti_changesecret_'.$i.'" onclick="javascript:toggleChgSecret(this.form,'."'$i','secret','lti'".');" />'.&mt('Yes').'</label>'.('&nbsp;'x2).
+                                      '</span><div id="lti_divchgsecret_'.$i.'" style="display:none" />'.
+                                      '<span class="LC_nobreak"> - '.$switchmessage.'</span>'.
+                                      '</div>';
+                    } elsif ($key eq '') {
+                        $datatable .= '<span class="LC_nobreak">'.&mt('Key and Secret are required').' - '.$switchmessage.'</span>'."\n";
+                    } else {
+                        $datatable .= '<span class="LC_nobreak">'.&mt('Secret required').' - '.$switchmessage.'</span>'."\n";
+                    }
+                } else {
+                    if ($usable ne '') {
+                        $datatable .= '<div id="lti_divcurrsecret_'.$i.'" style="display:inline-block" /><span class="LC_nobreak">'.
+                                      $lt{'secret'}.': ['.&mt('not shown').'] '.('&nbsp;'x2).'</span></div>'.
+                                      '<span class="LC_nobreak">'.&mt('Change?').
+                                      '<label><input type="radio" value="0" name="lti_changesecret_'.$i.'" onclick="javascript:toggleChgSecret(this.form,'."'$i','secret','lti'".');" checked="checked" />'.&mt('No').'</label>'.
+                                      ('&nbsp;'x2).
+                                      '<label><input type="radio" value="1" name="lti_changesecret_'.$i.'" onclick="javascript:toggleChgSecret(this.form,'."'$i','secret','lti'".');" />'.&mt('Yes').
+                                      '</label>&nbsp;&nbsp;</span><div id="lti_divchgsecret_'.$i.'" style="display:none" />'.
+                                      '<span class="LC_nobreak">'.&mt('New Secret').':'.
+                                      '<input type="password" size="20" name="lti_secret_'.$i.'" value="" autocomplete="new-password" />'.
+                                      '<label><input type="checkbox" name="lti_visible_'.$i.'" id="lti_visible_'.$i.'" onclick="if (this.checked) { this.form.lti_secret_'.$i.'.type='."'text'".' } else { this.form.lti_secret_'.$i.'.type='."'password'".' }" />'.&mt('Visible input').'</label></span></div>';
+                    } else {
+                        $datatable .=
+                            '<span class="LC_nobreak">'.$lt{'secret'}.':'.
+                            '<input type="password" size="20" name="lti_secret_'.$i.'" value="" autocomplete="new-password" />'.
+                            '<label><input type="checkbox" name="lti_visible_'.$i.'" id="lti_visible_'.$i.'" onclick="if (this.checked) { this.form.lti_secret_'.$i.'.type='."'text'".' } else { this.form.lti_secret_'.$i.'.type='."'password'".' }" />'.&mt('Visible input').'</label>';
+                    }
+                }
+                $datatable .= '<br /><br />'.
+                    '<span class="LC_nobreak">'.$lt{'requser'}.':'.
+                    '<label><input type="radio" name="lti_requser_'.$i.'" value="1"'.$onclickrequser.$checkedrequser{yes}.' />'.&mt('Yes').'</label>&nbsp;'."\n".
+                    '<label><input type="radio" name="lti_requser_'.$i.'" value="0"'.$onclickrequser.$checkedrequser{no}.' />'.&mt('No').'</label></span>'."\n".
+                    '<br /><br />'.
+                    '<span class="LC_nobreak">'.$lt{'crsinc'}.':'.
+                    '<label><input type="radio" name="lti_crsinc_'.$i.'" value="1"'.$onclickcrsinc.$checkedcrsinc{yes}.' />'.&mt('Yes').'</label>&nbsp;'."\n".
+                    '<label><input type="radio" name="lti_crsinc_'.$i.'" value="0"'.$onclickcrsinc.$checkedcrsinc{no}.' />'.&mt('No').'</label></span>'."\n".
+                    ('&nbsp;'x4).
+                    '<input type="hidden" name="lti_id_'.$i.'" value="'.$item.'" /></span>'.
+                    '</fieldset>'.&lti_options($i,$current,$itemcount,%lt).'</td></tr>';
+                $itemcount ++;
             }
-            unless (grep(/^\Q$hostid\E$/,@ids)) {
-                $switch = 1;
+        }
+        $css_class = $itemcount%2?' class="LC_odd_row"':'';
+        my $chgstr = ' onchange="javascript:reorderLTI(this.form,'."'lti_pos_add'".');"';
+        $datatable .= '<tr '.$css_class.'><td><span class="LC_nobreak">'."\n".
+                      '<input type="hidden" name="lti_maxnum" value="'.$maxnum.'" />'."\n".
+                      '<select name="lti_pos_add"'.$chgstr.'>';
+        for (my $k=0; $k<$maxnum+1; $k++) {
+            my $vpos = $k+1;
+            my $selstr;
+            if ($k == $maxnum) {
+                $selstr = ' selected="selected" ';
             }
-            if ($showextra) {
-                $numshown ++;
-                $divsty = 'display:inline-block';
+            $datatable .= '<option value="'.$k.'"'.$selstr.'>'.$vpos.'</option>';
+        }
+        $datatable .= '</select>&nbsp;'."\n".
+                      '<input type="checkbox" name="lti_add" value="1" />'.&mt('Add').'</span></td>'."\n".
+                      '<td colspan="2">'.
+                      '<fieldset><legend>'.&mt('Required settings').'</legend>'.
+                      '<span class="LC_nobreak">'.$lt{'consumer'}.
+                      ':<input type="text" size="15" name="lti_consumer_add" value="" /></span> '."\n".
+                      ('&nbsp;'x2).
+                      '<span class="LC_nobreak">'.$lt{'version'}.':<select name="lti_version_add">'.
+                      '<option value="LTI-1p0" selected="selected">1.1</option></select></span> '."\n".
+                      ('&nbsp;'x2).
+                      '<span class="LC_nobreak">'.$lt{'lifetime'}.':<input type="text" size="3" name="lti_lifetime_add" value="300" /></span><br /><br />'."\n";
+        if ($switchserver) {
+            $datatable .= '<span class="LC_nobreak">'.&mt('Key and Secret are required').' - '.$switchmessage.'</span>'."\n";
+        } else {
+            $datatable .= '<span class="LC_nobreak">'.$lt{'key'}.':<input type="text" size="25" name="lti_key_add" value="" autocomplete="off" /></span> '."\n".
+                          ('&nbsp;'x2).
+                          '<span class="LC_nobreak">'.$lt{'secret'}.':<input type="password" size="20" name="lti_secret_add" value="" autocomplete="new-password" />'.
+                          '<label><input type="checkbox" name="lti_add_visible" id="lti_add_visible" onclick="if (this.checked) { this.form.lti_secret_add.type='."'text'".' } else { this.form.lti_secret_add.type='."'password'".' }" />'.&mt('Visible input').'</label></span> '."\n";
+        }
+        $datatable .= '<br /><br />'.
+                      '<span class="LC_nobreak">'.$lt{'requser'}.':'.
+                      '<label><input type="radio" name="lti_requser_add" value="1" onclick="toggleLTI(this.form,'."'requser','add'".');" checked="checked" />'.&mt('Yes').'</label>&nbsp;'."\n".
+                      '<label><input type="radio" name="lti_requser_add" value="0" onclick="toggleLTI(this.form,'."'requser','add'".');" />'.&mt('No').'</label></span>'."\n".
+                      '<br /><br />'.
+                      '<span class="LC_nobreak">'.$lt{'crsinc'}.':'.
+                      '<label><input type="radio" name="lti_crsinc_add" value="1" onclick="toggleLTI(this.form,'."'crsinc','add'".');" checked="checked" />'.&mt('Yes').'</label>&nbsp;'."\n".
+                      '<label><input type="radio" name="lti_crsinc_add" value="0" onclick="toggleLTI(this.form,'."'crsinc','add'".');" />'.&mt('No').'</label></span>'."\n".
+                      '</fieldset>'.&lti_options('add',undef,$itemcount,%lt).
+                      '</td>'."\n".
+                      '</tr>'."\n";
+        $itemcount ++;
+    }
+    $$rowtotal += $itemcount;
+    return $datatable;
+}
+
+sub lti_names {
+    my %lt = &Apache::lonlocal::texthash(
+                                          'version'   => 'LTI Version',
+                                          'url'       => 'URL',
+                                          'key'       => 'Key',
+                                          'lifetime'  => 'Nonce lifetime (s)',
+                                          'consumer'  => 'Consumer',
+                                          'secret'    => 'Secret',
+                                          'requser'   => "User's identity sent",
+                                          'crsinc'    => "Course's identity sent",
+                                          'email'     => 'Email address',
+                                          'sourcedid' => 'User ID',
+                                          'other'     => 'Other',
+                                          'passback'  => 'Can return grades to Consumer:',
+                                          'roster'    => 'Can retrieve roster from Consumer:',
+                                          'topmenu'   => 'Display LON-CAPA page header',
+                                          'inlinemenu'=> 'Display LON-CAPA inline menu',
+                                        );
+    return %lt;
+}
+
+sub lti_options {
+    my ($num,$current,$itemcount,%lt) = @_;
+    my (%checked,%rolemaps,$crssecsrc,$userfield,$cidfield,$callback);
+    $checked{'mapuser'}{'sourcedid'} = ' checked="checked"';
+    $checked{'mapcrs'}{'course_offering_sourcedid'} = ' checked="checked"';
+    $checked{'storecrs'}{'Y'} = ' checked="checked"';
+    $checked{'makecrs'}{'N'} = ' checked="checked"';
+    $checked{'mapcrstype'} = {};
+    $checked{'makeuser'} = {};
+    $checked{'selfenroll'} = {};
+    $checked{'crssec'} = {};
+    $checked{'crssecsrc'} = {};
+    $checked{'lcauth'} = {};
+    $checked{'menuitem'} = {};
+    if ($num eq 'add') {
+        $checked{'lcauth'}{'lti'} = ' checked="checked"';
+    }
+    my $userfieldsty = 'none';
+    my $crsfieldsty = 'none';
+    my $crssecfieldsty = 'none';
+    my $secsrcfieldsty = 'none';
+    my $callbacksty = 'none';
+    my $passbacksty = 'none';
+    my $optionsty = 'block';
+    my $crssty = 'block';
+    my $lcauthparm;
+    my $lcauthparmstyle = 'display:none';
+    my $lcauthparmtext;
+    my $menusty;
+    my $numinrow = 4;
+    my %menutitles = &ltimenu_titles();
+
+    if (ref($current) eq 'HASH') {
+        if (!$current->{'requser'}) {
+            $optionsty = 'none';
+            $crssty = 'none';
+        } elsif (!$current->{'crsinc'}) {
+            $crssty = 'none';
+        }
+        if (($current->{'mapuser'} ne '') && ($current->{'mapuser'} ne 'lis_person_sourcedid')) {
+            $checked{'mapuser'}{'sourcedid'} = '';
+            if ($current->{'mapuser'} eq 'lis_person_contact_email_primary') {
+                $checked{'mapuser'}{'email'} = ' checked="checked"';
             } else {
-                $divsty = 'display:none';
+                $checked{'mapuser'}{'other'} = ' checked="checked"';
+                $userfield = $current->{'mapuser'};
+                $userfieldsty = 'inline-block';
             }
-            $extra .= '<fieldset id="ltisec_info_'.$hostid.'" style="'.$divsty.'">'.
-                      '<legend>'.$hostid.'</legend>';
-            if ($switch) {
-                my $switchserver = '<a href="/adm/switchserver?otherserver='.$hostid.'&amp;role='.
-                                   &HTML::Entities::encode($env{'request.role'},'\'<>"&').
-                                   '&amp;destinationurl=/adm/domainprefs">'.&mt('Switch Server').'</a>';
-                if (exists($privkeys{$hostid})) {
-                    $extra .= '<div id="ltisec_divcurrprivkey_'.$hostid.'" style="display:inline-block" />'.
-                              '<span class="LC_nobreak">'.
-                              &mt('Encryption Key').': ['.&mt('not shown').'] '.('&nbsp;'x2).'</span></div>'.
-                              '<span class="LC_nobreak">'.&mt('Change?').
-                              '<label><input type="radio" value="0" name="ltisec_changeprivkey_'.$hostid.'" onclick="javascript:togglePrivKey(this.form,'."'$hostid'".');" checked="checked" />'.&mt('No').'</label>'.
-                              ('&nbsp;'x2).
-                              '<label><input type="radio" value="1" name="ltisec_changeprivkey_'.$hostid.'" onclick="javascript:togglePrivKey(this.form,'."'$hostid'".');" />'.&mt('Yes').
-                              '</label>&nbsp;&nbsp;</span><div id="ltisec_divchgprivkey_'.$hostid.'" style="display:none" />'.
-                              '<span class="LC_nobreak"> - '.&mt('submit from server ([_1]): [_2].',$hostid,$switchserver).
-                              '</span></div>';
+        }
+        if (($current->{'mapcrs'} ne '') && ($current->{'mapcrs'} ne 'course_offering_sourcedid')) {
+            $checked{'mapcrs'}{'course_offering_sourcedid'} = '';
+            if ($current->{'mapcrs'} eq 'context_id') {
+                $checked{'mapcrs'}{'context_id'} = ' checked="checked"';
+            } else {
+                $checked{'mapcrs'}{'other'} = ' checked="checked"';
+                $cidfield = $current->{'mapcrs'};
+                $crsfieldsty = 'inline-block';
+            }
+        }
+        if (ref($current->{'mapcrstype'}) eq 'ARRAY') {
+            foreach my $type (@{$current->{'mapcrstype'}}) {
+                $checked{'mapcrstype'}{$type} = ' checked="checked"';
+            }
+        }
+        if (!$current->{'storecrs'}) {
+            $checked{'storecrs'}{'N'} = $checked{'storecrs'}{'Y'};
+            $checked{'storecrs'}{'Y'} = '';
+        }
+        if ($current->{'makecrs'}) {
+            $checked{'makecrs'}{'Y'} = '  checked="checked"';
+        }
+        if (ref($current->{'makeuser'}) eq 'ARRAY') {
+            foreach my $role (@{$current->{'makeuser'}}) {
+                $checked{'makeuser'}{$role} = ' checked="checked"';
+            }
+        }
+        if ($current->{'lcauth'} =~ /^(internal|localauth|krb4|krb5|lti)$/) {
+            $checked{'lcauth'}{$1} = ' checked="checked"';
+            unless (($current->{'lcauth'} eq 'lti') || ($current->{'lcauth'} eq 'internal')) {
+                $lcauthparm = $current->{'lcauthparm'};
+                $lcauthparmstyle = 'display:table-row';
+                if ($current->{'lcauth'} eq 'localauth') {
+                    $lcauthparmtext = &mt('Local auth argument');
                 } else {
-                    $extra .= '<span class="LC_nobreak">'.
-                              &mt('Key required').' - '.&mt('submit from server ([_1]): [_2].',$hostid,$switchserver).
-                              '</span>'."\n";
+                    $lcauthparmtext = &mt('Kerberos domain');
                 }
-            } elsif (exists($privkeys{$hostid})) {
-                $extra .= '<div id="ltisec_divcurrprivkey_'.$hostid.'" style="display:inline-block" /><span class="LC_nobreak">'.
-                          &mt('Encryption Key').': ['.&mt('not shown').'] '.('&nbsp;'x2).'</span></div>'.
-                          '<span class="LC_nobreak">'.&mt('Change?').
-                          '<label><input type="radio" value="0" name="ltisec_changeprivkey_'.$hostid.'" onclick="javascript:togglePrivKey(this.form,'."'$hostid'".');" checked="checked" />'.&mt('No').'</label>'.
-                          ('&nbsp;'x2).
-                          '<label><input type="radio" value="1" name="ltisec_changeprivkey_'.$hostid.'" onclick="javascript:togglePrivKey(this.form,'."'$hostid'".');" />'.&mt('Yes').
-                          '</label>&nbsp;&nbsp;</span><div id="ltisec_divchgprivkey_'.$hostid.'" style="display:none" />'.
-                          '<span class="LC_nobreak">'.&mt('New Key').':'.
-                          '<input type="password" size="20" name="ltisec_privkey_'.$hostid.'" value="" autocomplete="new-password" />'.
-                          '<label><input type="checkbox" name="visible" onclick="if (this.checked) { this.form.ltisec_privkey_'.$hostid.'.type='."'text'".' } else { this.form.ltisec_privkey_'.$hostid.'.type='."'password'".' }" />'.&mt('Visible input').'</label>'.
-                          '</span></div>';
+            }
+        }
+        if (ref($current->{'selfenroll'}) eq 'ARRAY') {
+            foreach my $role (@{$current->{'selfenroll'}}) {
+                $checked{'selfenroll'}{$role} = ' checked="checked"';
+            }
+        }
+        if (ref($current->{'maproles'}) eq 'HASH') {
+            %rolemaps = %{$current->{'maproles'}};
+        }
+        if ($current->{'section'} ne '') {
+            $checked{'crssec'}{'Y'} = '  checked="checked"';
+            $crssecfieldsty = 'inline-block';
+            if ($current->{'section'} eq 'course_section_sourcedid') {
+                $checked{'crssecsrc'}{'sourcedid'} = ' checked="checked"';
             } else {
-                $extra .= '<span class="LC_nobreak">'.&mt('Encryption Key').':'.
-                          '<input type="password" size="20" name="ltisec_privkey_'.$hostid.'" value="" autocomplete="new-password" />'.
-                          '<label><input type="checkbox" name="visible" onclick="if (this.checked) { this.form.ltisec_privkey_'.$hostid.'.type='."'text'".' } else { this.form.ltisec_privkey_'.$hostid.'.type='."'password'".' }" />'.&mt('Visible input').'</label>';
+                $checked{'crssecsrc'}{'other'} = ' checked="checked"';
+                $crssecsrc = $current->{'section'};
+                $secsrcfieldsty = 'inline-block';
             }
-            $extra .= '</fieldset>';
+        } else {
+            $checked{'crssec'}{'N'} = ' checked="checked"';
         }
-        my %choices = &Apache::lonlocal::texthash (
-                                                      ltisec_crslinkprot => 'Encrypt stored link protection secrets defined in courses',
-                                                      ltisec_domlinkprot => 'Encrypt stored link protection secrets defined in domain',
-                                                  );
-        my @toggles = qw(ltisec_crslinkprot ltisec_domlinkprot);
-        my %defaultchecked = (
-                               'ltisec_crslinkprot' => 'off',
-                               'ltisec_domlinkprot' => 'off',
-                             );
-        my ($onclick,$itemcount);
-        $onclick = 'javascript:toggleLTIEncKey(this.form);';
-        ($datatable,$itemcount) = &radiobutton_prefs(\%encrypt,\@toggles,\%defaultchecked,
-                                                     \%choices,$itemcount,$onclick,'','left','no');
-
-        $css_class = $itemcount%2?' class="LC_odd_row"':'';
-        my $noprivkeysty = 'display:inline-block';
-        if ($numshown) {
-            $noprivkeysty = 'display:none';
-        }
-        $datatable .= '<tr '.$css_class.'><td><span class="LC_nobreak">'.&mt('Encryption Key(s)').'</td>'.
-                      '<td><div id="ltisec_noprivkey" style="'.$noprivkeysty.'" >'.
-                      '<span class="LC_nobreak">'.&mt('Not in use').'</span></div>'.
-                      $extra.
-                      '</td></tr>';
-        $itemcount ++;
-        $$rowtotal += $itemcount;
-    } elsif ($position eq 'middle') {
-        $datatable = &password_rules('secrets',\$itemcount,\%rules);
-        $$rowtotal += $itemcount;
-    } elsif ($position eq 'bottom') {
-         $datatable .= &Apache::courseprefs::print_linkprotection($dom,'',$settings,$rowtotal,'','','domain');
+        if ($current->{'callback'} ne '') {
+            $callback = $current->{'callback'};
+            $checked{'callback'}{'Y'} = ' checked="checked"';
+            $callbacksty = 'inline-block';
+        } else {
+            $checked{'callback'}{'N'} = ' checked="checked"';
+        }
+        if ($current->{'topmenu'}) {
+            $checked{'topmenu'}{'Y'} = ' checked="checked"';
+        } else {
+            $checked{'topmenu'}{'N'} = ' checked="checked"';
+        }
+        if ($current->{'inlinemenu'}) {
+            $checked{'inlinemenu'}{'Y'} = ' checked="checked"';
+        } else {
+            $checked{'inlinemenu'}{'N'} = ' checked="checked"';
+        }
+        if (($current->{'topmenu'}) || ($current->{'inlinemenu'})) {
+            $menusty = 'inline-block';
+            if (ref($current->{'lcmenu'}) eq 'ARRAY') {
+                foreach my $item (@{$current->{'lcmenu'}}) {
+                    if (exists($menutitles{$item})) {
+                        $checked{'menuitem'}{$item} = ' checked="checked"';
+                    }
+                }
+            }
+        } else {
+            $menusty = 'none';
+        }
+    } else {
+        $checked{'makecrs'}{'N'} = ' checked="checked"';
+        $checked{'crssec'}{'N'} = ' checked="checked"';
+        $checked{'callback'}{'N'} = ' checked="checked"';
+        $checked{'topmenu'}{'N'} = ' checked="checked"';
+        $checked{'inlinemenu'}{'Y'} = ' checked="checked"';
+        $checked{'menuitem'}{'grades'} = ' checked="checked"';
+        $menusty = 'inline-block';
     }
-    return $datatable;
+    my @coursetypes = ('official','unofficial','community','textbook','lti');
+    my %coursetypetitles = &Apache::lonlocal::texthash (
+                               official   => 'Official',
+                               unofficial => 'Unofficial',
+                               community  => 'Community',
+                               textbook   => 'Textbook',
+                               lti        => 'LTI Provider',
+    );
+    my @authtypes = ('internal','krb4','krb5','localauth');
+    my %shortauth = (
+                     internal => 'int',
+                     krb4 => 'krb4',
+                     krb5 => 'krb5',
+                     localauth  => 'loc'
+                    );
+    my %authnames = &authtype_names();
+    my @ltiroles = qw(Learner Instructor ContentDeveloper TeachingAssistant Mentor Member Manager Administrator);
+    my @lticourseroles = qw(Learner Instructor TeachingAssistant Mentor);
+    my @courseroles = ('cc','in','ta','ep','st');
+    my $onclickuser = ' onclick="toggleLTI(this.form,'."'user','$num'".');"';
+    my $onclickcrs = ' onclick="toggleLTI(this.form,'."'crs','$num'".');"';
+    my $onclicksec = ' onclick="toggleLTI(this.form,'."'sec','$num'".');"';
+    my $onclickcallback = ' onclick="toggleLTI(this.form,'."'callback','$num'".');"';
+    my $onclicksecsrc = ' onclick="toggleLTI(this.form,'."'secsrc','$num'".')"';
+    my $onclicklcauth = ' onclick="toggleLTI(this.form,'."'lcauth','$num'".')"';
+    my $onclickmenu = ' onclick="toggleLTI(this.form,'."'lcmenu','$num'".');"';
+    my $output = '<fieldset class="ltioption_usr_'.$num.'" style="display:'.$optionsty.'"><legend>'.&mt('Logout options').'</legend>'.
+                 '<div class="LC_floatleft"><span class="LC_nobreak">'.&mt('Callback to logout LON-CAPA on log out from Consumer').':&nbsp;'.
+                 '<label><input type="radio" name="lti_callback_'.$num.'" value="0"'.
+                 $checked{'callback'}{'N'}.$onclickcallback.' />'.&mt('No').'</label>'.('&nbsp;'x2).
+                 '<label><input type="radio" name="lti_callback_'.$num.'" value="1"'.
+                 $checked{'callback'}{'Y'}.$onclickcallback.' />'.&mt('Yes').'</label></span></div>'.
+                 '<div class="LC_floatleft" style="display:'.$callbacksty.';" id="lti_callbackfield_'.$num.'">'.
+                 '<span class="LC_nobreak">'.&mt('Parameter').': '.
+                 '<input type="text" name="lti_callbackparam_'.$num.'" value="'.$callback.'" /></span>'.
+                 '</div><div style="padding:0;clear:both;margin:0;border:0"></div></fieldset>'.
+                 '<fieldset class="ltioption_usr_'.$num.'" style="display:'.$optionsty.'"><legend>'.&mt('Mapping users').'</legend>'.
+                 '<div class="LC_floatleft"><span class="LC_nobreak">'.&mt('LON-CAPA username').':&nbsp;';
+    foreach my $option ('sourcedid','email','other') {
+        $output .= '<label><input type="radio" name="lti_mapuser_'.$num.'" value="'.$option.'"'.
+                   $checked{'mapuser'}{$option}.$onclickuser.' />'.$lt{$option}.'</label>'.
+                   ($option eq 'other' ? '' : ('&nbsp;'x2) );
+    }
+    $output .= '</span></div>'.
+               '<div class="LC_floatleft" style="display:'.$userfieldsty.';" id="lti_userfield_'.$num.'">'.
+               '<input type="text" name="lti_customuser_'.$num.'" '.
+               'value="'.$userfield.'" /></div></fieldset>'.
+               '<fieldset class="ltioption_usr_'.$num.'" style="display:'.$optionsty.'"><legend>'.&mt('Roles which may create user accounts').'</legend>';
+    foreach my $ltirole (@ltiroles) {
+        $output .= '<span class="LC_nobreak"><label><input type="checkbox" name="lti_makeuser_'.$num.'" value="'.$ltirole.'"'.
+                   $checked{'makeuser'}{$ltirole}.' />'.$ltirole.'</label>&nbsp;</span> ';
+    }
+    $output .= '</fieldset>'.
+               '<fieldset class="ltioption_usr_'.$num.'" style="display:'.$optionsty.'"><legend>'.&mt('New user accounts created for LTI users').'</legend>'.
+               '<table>'.
+               &modifiable_userdata_row('lti','instdata_'.$num,$current,$numinrow,$itemcount).
+               '</table>'.
+               '<table class="LC_nested"><tr><td class="LC_left_item">LON-CAPA Authentication</td>'.
+               '<td class="LC_left_item">';
+    foreach my $auth ('lti',@authtypes) {
+        my $authtext;
+        if ($auth eq 'lti') {
+            $authtext = &mt('None');
+        } else {
+            $authtext = $authnames{$shortauth{$auth}};
+        }
+        $output .= '<span class="LC_nobreak"><label><input type="radio" name="lti_lcauth_'.$num.
+                   '" value="'.$auth.'"'.$checked{'lcauth'}{$auth}.$onclicklcauth.' />'.
+                   $authtext.'</label></span> &nbsp;';
+    }
+    $output .= '</td></tr>'.
+               '<tr id="lti_lcauth_parmrow_'.$num.'" style="'.$lcauthparmstyle.'">'.
+               '<td class="LC_right_item" colspan="2"><span class="LC_nobreak">'.
+               '<span id="lti_lcauth_parmtext_'.$num.'">'.$lcauthparmtext.'</span>'.
+               '<input type="text" name="lti_lcauthparm_'.$num.'" value="" /></span></td></tr>'.
+               '</table></fieldset>'.
+               '<fieldset class="ltioption_usr_'.$num.'" style="display:'.$optionsty.'"><legend>'.
+               &mt('LON-CAPA menu items (Course Coordinator can override)').'</legend>'.
+               '<div class="LC_floatleft"><span class="LC_nobreak">'.$lt{'topmenu'}.':&nbsp;'.
+               '<label><input type="radio" name="lti_topmenu_'.$num.'" value="0"'.
+               $checked{'topmenu'}{'N'}.$onclickmenu.' />'.&mt('No').'</label>'.('&nbsp;'x2).
+               '<label><input type="radio" name="lti_topmenu_'.$num.'" value="1"'.
+               $checked{'topmenu'}{'Y'}.$onclickmenu.' />'.&mt('Yes').'</label></span></div>'.
+               '<div style="padding:0;clear:both;margin:0;border:0"></div>'.
+               '<div class="LC_floatleft"><span class="LC_nobreak">'.$lt{'inlinemenu'}.':&nbsp;'.
+               '<label><input type="radio" name="lti_inlinemenu_'.$num.'" value="0"'.
+               $checked{'inlinemenu'}{'N'}.$onclickmenu.' />'.&mt('No').'</label>'.('&nbsp;'x2).
+               '<label><input type="radio" name="lti_inlinemenu_'.$num.'" value="1"'.
+               $checked{'inlinemenu'}{'Y'}.$onclickmenu.' />'.&mt('Yes').'</label></span></div>';
+     $output .='<div style="padding:0;clear:both;margin:0;border:0"></div>'.
+               '<div class="LC_floatleft" style="display:'.$menusty.';" id="lti_menufield_'.$num.'">'.
+               '<span class="LC_nobreak">'.&mt('Menu items').':&nbsp;';
+    foreach my $type ('fullname','coursetitle','role','logout','grades') {
+        $output .= '<label><input type="checkbox" name="lti_menuitem_'.$num.'" value="'.$type.'"'.
+                   $checked{'menuitem'}{$type}.' />'.$menutitles{$type}.'</label>'.
+                   ('&nbsp;'x2);
+    }
+    $output .= '</span></div></fieldset>'.
+               '<fieldset class="ltioption_crs_'.$num.'" style="display:'.$crssty.'"><legend>'.&mt('Mapping courses').'</legend>'.
+               '<div class="LC_floatleft"><span class="LC_nobreak">'.
+               &mt('Unique course identifier').':&nbsp;';
+    foreach my $option ('course_offering_sourcedid','context_id','other') {
+        $output .= '<label><input type="radio" name="lti_mapcrs_'.$num.'" value="'.$option.'"'.
+                   $checked{'mapcrs'}{$option}.$onclickcrs.' />'.$option.'</label>'.
+                   ($option eq 'other' ? '' : ('&nbsp;'x2) );
+    }
+    $output .= '</span></div><div class="LC_floatleft" style="display:'.$crsfieldsty.';" id="lti_crsfield_'.$num.'">'.
+               '<input type="text" name="lti_mapcrsfield_'.$num.'" value="'.$cidfield.'" />'.
+               '</div><div style="padding:0;clear:both;margin:0;border:0"></div>'.
+               '<span class="LC_nobreak">'.&mt('LON-CAPA course type(s)').':&nbsp;';
+    foreach my $type (@coursetypes) {
+        $output .= '<label><input type="checkbox" name="lti_mapcrstype_'.$num.'" value="'.$type.'"'.
+                   $checked{'mapcrstype'}{$type}.' />'.$coursetypetitles{$type}.'</label>'.
+                   ('&nbsp;'x2);
+    }
+    $output .= '</span><br /><br />'.
+               '<span class="LC_nobreak">'.&mt('Store mapping of course identifier to LON-CAPA CourseID').':&nbsp;'.
+               '<label><input type="radio" name="lti_storecrs_'.$num.'" value="0"'.
+               $checked{'storecrs'}{'N'}.' />'.&mt('No').'</label>'.('&nbsp;'x2).
+               '<label><input type="radio" name="lti_storecrs_'.$num.'" value="1"'.
+               $checked{'storecrs'}{'Y'}.' />'.&mt('Yes').'</label></span>'.
+               '</fieldset>'.
+               '<fieldset class="ltioption_crs_'.$num.'" style="display:'.$crssty.'"><legend>'.&mt('Mapping course roles').'</legend><table><tr>';
+    foreach my $ltirole (@lticourseroles) {
+        my ($selected,$selectnone);
+        if ($rolemaps{$ltirole} eq '') {
+            $selectnone = ' selected="selected"';
+        }
+        $output .= '<td style="text-align: center">'.$ltirole.'<br />'.
+                   '<select name="lti_maprole_'.$ltirole.'_'.$num.'">'.
+                   '<option value=""'.$selectnone.'>'.&mt('Select').'</option>';
+        foreach my $role (@courseroles) {
+            unless ($selectnone) {
+                if ($rolemaps{$ltirole} eq $role) {
+                    $selected = ' selected="selected"';
+                } else {
+                    $selected = '';
+                }
+            }
+            $output .= '<option value="'.$role.'"'.$selected.'>'.
+                       &Apache::lonnet::plaintext($role,'Course').
+                       '</option>';
+        }
+        $output .= '</select></td>';
+    }
+    $output .= '</tr></table></fieldset>'.
+               '<fieldset class="ltioption_crs_'.$num.'" style="display:'.$crssty.'"><legend>'.&mt('Creating courses').'</legend>'.
+               '<span class="LC_nobreak">'.&mt('Course created (if absent) on Instructor access').':&nbsp;'.
+               '<label><input type="radio" name="lti_makecrs_'.$num.'" value="0"'.
+               $checked{'makecrs'}{'N'}.' />'.&mt('No').'</label>'.('&nbsp;'x2).
+               '<label><input type="radio" name="lti_makecrs_'.$num.'" value="1"'.
+               $checked{'makecrs'}{'Y'}.' />'.&mt('Yes').'</label></span>'.
+               '</fieldset>'.
+               '<fieldset class="ltioption_crs_'.$num.'" style="display:'.$crssty.'"><legend>'.&mt('Roles which may self-enroll').'</legend>';
+    foreach my $lticrsrole (@lticourseroles) {
+        $output .= '<span class="LC_nobreak"><label><input type="checkbox" name="lti_selfenroll_'.$num.'" value="'.$lticrsrole.'"'.
+                   $checked{'selfenroll'}{$lticrsrole}.' />'.$lticrsrole.'</label>&nbsp;</span> ';
+    }
+    $output .= '</fieldset>'.
+               '<fieldset class="ltioption_crs_'.$num.'" style="display:'.$crssty.'"><legend>'.&mt('Course options').'</legend>'.
+               '<div class="LC_floatleft"><span class="LC_nobreak">'.&mt('Assign users to sections').':&nbsp;'.
+               '<label><input type="radio" name="lti_crssec_'.$num.'" value="0"'.
+               $checked{'crssec'}{'N'}.$onclicksec.' />'.&mt('No').'</label>'.('&nbsp;'x2).
+               '<label><input type="radio" name="lti_crssec_'.$num.'" value="1"'.
+               $checked{'crssec'}{'Y'}.$onclicksec.' />'.&mt('Yes').'</label></span></div>'.
+               '<div class="LC_floatleft" style="display:'.$crssecfieldsty.';" id="lti_crssecfield_'.$num.'">'.
+               '<span class="LC_nobreak">'.&mt('From').':<label>'.
+               '<input type="radio" name="lti_crssecsrc_'.$num.'" value="course_section_sourcedid"'.
+               $checked{'crssecsrc'}{'sourcedid'}.$onclicksecsrc.' />'.
+               &mt('Standard field').'</label>'.('&nbsp;'x2).
+               '<label><input type="radio" name="lti_crssecsrc_'.$num.'" value="other"'.
+               $checked{'crssecsrc'}{'other'}.$onclicksecsrc.' />'.&mt('Other').
+               '</label></span></div><div class="LC_floatleft" style="display:'.$secsrcfieldsty.';" id="lti_secsrcfield_'.$num.'">'.
+               '<input type="text" name="lti_customsection_'.$num.'" value="'.$crssecsrc.'" />'.
+               '</div><div style="padding:0;clear:both;margin:0;border:0"></div>';
+    my ($pb1p1chk,$pb1p0chk,$onclickpb);
+    foreach my $extra ('roster','passback') {
+        my $checkedon = '';
+        my $checkedoff = ' checked="checked"';
+        if ($extra eq 'passback') {
+            $pb1p1chk = ' checked="checked"';
+            $pb1p0chk = '';
+            $onclickpb = ' onclick="toggleLTI(this.form,'."'passback','$num'".');"';
+        } else {
+            $onclickpb = '';
+        }
+        if (ref($current) eq 'HASH') {
+            if (($current->{$extra})) {
+                $checkedon = $checkedoff;
+                $checkedoff = '';
+                if ($extra eq 'passback') {
+                    $passbacksty = 'inline-block';
+                }
+                if ($current->{'passbackformat'} eq '1.0') {
+                    $pb1p0chk =  ' checked="checked"';
+                    $pb1p1chk = '';
+                }
+            }
+        }
+        $output .= $lt{$extra}.'&nbsp;'.
+                   '<label><input type="radio" name="lti_'.$extra.'_'.$num.'" value="0"'.$checkedoff.$onclickpb.' />'.
+                   &mt('No').'</label>'.('&nbsp;'x2).
+                   '<label><input type="radio" name="lti_'.$extra.'_'.$num.'" value="1"'.$checkedon.$onclickpb.' />'.
+                   &mt('Yes').'</label><br />';
+    }
+    $output .= '<div class="LC_floatleft" style="display:'.$passbacksty.';" id="lti_passback_'.$num.'">'.
+               '<span class="LC_nobreak">'.&mt('Grade format').
+               '<label><input type="radio" name="lti_passbackformat_'.$num.'" value="1.1"'.$pb1p1chk.' />'.
+               &mt('Outcomes Service (1.1)').'</label>'.('&nbsp;'x2).
+               '<label><input type="radio" name="lti_passbackformat_'.$num.'" value="1.0"'.$pb1p0chk.'/>'.
+               &mt('Outcomes Extension (1.0)').'</label></span></div>'.
+               '<div style="padding:0;clear:both;margin:0;border:0"></div></fieldset>';
+    $output .= '</span></div></fieldset>';
+#        '<fieldset><legend>'.&mt('Assigning author roles').'</legend>';
+#
+#    $output .= '</fieldset>'.
+#        '<fieldset><legend>'.&mt('Assigning domain roles').'</legend>';
+    return $output;
 }
 
+sub ltimenu_titles {
+    return &Apache::lonlocal::texthash(
+                                        fullname    => 'Full name',
+                                        coursetitle => 'Course title',
+                                        role        => 'Role',
+                                        logout      => 'Logout',
+                                        grades      => 'Grades',
+    );
+}
+
+
+
 sub print_coursedefaults {
     my ($position,$dom,$settings,$rowtotal) = @_;
     my ($css_class,$datatable,%checkedon,%checkedoff,%defaultchecked,@toggles);
@@ -5391,12 +5929,16 @@ sub print_coursedefaults {
         canclone             => "People who may clone a course (besides course's owner and coordinators)",
         mysqltables          => 'Lifetime (s) of "Temporary" MySQL tables (student performance data) on homeserver',
         ltiauth              => 'Student username in LTI launch of deep-linked URL can be accepted without re-authentication',
+        domexttool           => 'External Tools defined in the domain may be used in courses/communities (by type)',
+        exttool              => 'External Tools can be defined and configured in courses/communities (by type)',
     );
     my %staticdefaults = (
                            anonsurvey_threshold => 10,
                            uploadquota          => 500,
                            postsubmit           => 60,
                            mysqltables          => 172800,
+                           domexttool           => 1,
+                           exttool              => 0,
                          );
     if ($position eq 'top') {
         %defaultchecked = (
@@ -5482,7 +6024,7 @@ sub print_coursedefaults {
                     if ($checked) {
                         $show = 'block';
                     }
-                    $additional = '<div id="cloneinstcode" style="display:'.$show.'" />'.
+                    $additional = '<div id="cloneinstcode" style="display:'.$show.';" />'.
                                   &mt('Institutional codes for new and cloned course have identical:').
                                   '<br />';
                     foreach my $item (@code_order) {
@@ -5513,11 +6055,33 @@ sub print_coursedefaults {
         my $currusecredits = 0;
         my $postsubmitclient = 1;
         my $ltiauth = 0;
+        my %domexttool;
+        my %exttool;
         my @types = ('official','unofficial','community','textbook');
         if (ref($settings) eq 'HASH') {
             if ($settings->{'ltiauth'}) {
                 $ltiauth = 1;
             }
+            if (ref($settings->{'domexttool'}) eq 'HASH') {
+                foreach my $type (@types) {
+                    if ($settings->{'domexttool'}->{$type}) {
+                        $domexttool{$type} = ' checked="checked"';
+                    }
+                }
+            } else {
+                foreach my $type (@types) {
+                    if ($staticdefaults{'domexttool'}) {
+                        $domexttool{$type} = ' checked="checked"';
+                    }
+                }
+            }
+            if (ref($settings->{'exttool'}) eq 'HASH') {
+                foreach my $type (@types) {
+                    if ($settings->{'exttool'}->{$type}) {
+                        $exttool{$type} = ' checked="checked"';
+                    }
+                }
+            }
             $currdefresponder = $settings->{'anonsurvey_threshold'};
             if (ref($settings->{'uploadquota'}) eq 'HASH') {
                 foreach my $type (keys(%{$settings->{'uploadquota'}})) {
@@ -5569,6 +6133,9 @@ sub print_coursedefaults {
         } else {
             foreach my $type (@types) {
                 $deftimeout{$type} = $staticdefaults{'postsubmit'};
+                if ($staticdefaults{'domexttool'}) {
+                    $domexttool{$type} = ' checked="checked"';
+                }
             }
         }
         if (!$currdefresponder) {
@@ -5672,7 +6239,35 @@ sub print_coursedefaults {
             &radiobutton_prefs($current,\@toggles,\%defaultchecked,
                                \%choices,$itemcount,undef,undef,'left');
         $datatable .= $table;
+        $css_class = $itemcount%2 ? ' class="LC_odd_row"' : '';
+        $datatable .= '<tr'.$css_class.'><td><span class="LC_nobreak">'.
+                      $choices{'domexttool'}.
+                      '</span></td>'.
+                      '<td style="text-align: right" class="LC_right_item">'.
+                      '<table><tr>';
+        foreach my $type (@types) {
+            $datatable .= '<td style="text-align: left">'.
+                          '<span class="LC_nobreak">'.
+                          '<input type="checkbox" name="domexttool"'.
+                          ' value="'.$type.'"'.$domexttool{$type}.' />'.
+                          &mt($type).'</span></td>'."\n";
+        }
+        $datatable .= '</tr></table></td></tr>'."\n";
         $itemcount ++;
+        $css_class = $itemcount%2 ? ' class="LC_odd_row"' : '';
+        $datatable .= '<tr'.$css_class.'><td><span class="LC_nobreak">'.
+                      $choices{'exttool'}.
+                      '</span></td>'.
+                      '<td style="text-align: right" class="LC_right_item">'.
+                      '<table><tr>';
+        foreach my $type (@types) {
+            $datatable .= '<td style="text-align: left">'.
+                          '<span class="LC_nobreak">'.
+                          '<input type="checkbox" name="exttool"'.
+                          ' value="'.$type.'"'.$exttool{$type}.' />'.
+                          &mt($type).'</span></td>'."\n";
+        }
+        $datatable .= '</tr></table></td></tr>'."\n";
     }
     $$rowtotal += $itemcount;
     return $datatable;
@@ -6258,7 +6853,7 @@ sub password_rules {
             max            => 'Maximum password length',
             chars          => 'Required characters',
         );
-    } elsif ($prefix eq 'secrets') {
+    } elsif (($prefix eq 'ltisecrets') || ($prefix eq 'toolsecrets')) {
         %titles = &Apache::lonlocal::texthash (
             min            => 'Minimum secret length',
             max            => 'Maximum secret length',
@@ -6694,12 +7289,14 @@ sub print_usersessions {
                                       $other_insts,$curroffloadnow,$curroffloadoth,$rowtotal);
         } else {
             $datatable .= '<tr'.$css_class.'><td colspan="2">'.
-                          &mt('Nothing to set here, as the cluster to which this domain belongs only contains one server.');
+                          &mt('Nothing to set here, as the cluster to which this domain belongs only contains one server.').
+                          '</td></tr>';
         }
     } else {
         if (keys(%by_location) == 0) {
             $datatable .= '<tr'.$css_class.'><td colspan="2">'.
-                          &mt('Nothing to set here, as the cluster to which this domain belongs only contains one institution.');
+                          &mt('Nothing to set here, as the cluster to which this domain belongs only contains one institution.').
+                          '</td></tr>';
         } else {
             my %lt = &usersession_titles();
             my $numinrow = 5;
@@ -7415,7 +8012,7 @@ sub loadbalance_rule_row {
     }
     my $space;
     if ($islast && $num == 1) {
-        $space = '<div display="inline-block">&nbsp;</div>';
+        $space = '<div style="display:inline-block;">&nbsp;</div>';
     }
     my $output =
         '<tr class="'.$css_class.'" id="balanceruletr_'.$balnum.'_'.$num.'"><td valign="top">'.$space.
@@ -7569,6 +8166,7 @@ sub courserequest_titles {
                                    unofficial => 'Unofficial',
                                    community  => 'Communities',
                                    textbook   => 'Textbook',
+                                   lti        => 'LTI Provider',
                                    norequest  => 'Not allowed',
                                    approval   => 'Approval by Dom. Coord.',
                                    validate   => 'With validation',
@@ -7682,7 +8280,7 @@ sub print_usercreation {
         }
     } else {
         my @contexts = ('author','course','domain');
-        my @authtypes = ('int','krb4','krb5','loc');
+        my @authtypes = ('int','krb4','krb5','loc','lti');
         my %checked;
         if (ref($settings) eq 'HASH') {
             if (ref($settings->{'authtypes'}) eq 'HASH') {
@@ -8244,7 +8842,7 @@ sub noninst_users {
 sub captcha_choice {
     my ($context,$settings,$itemcount,$customcss,$rowstyle) = @_;
     my ($keyentry,$currpub,$currpriv,%checked,$rowname,$pubtext,$privtext,
-        $vertext,$currver); 
+        $vertext,$currver);
     my %lt = &captcha_phrases();
     $keyentry = 'hidden';
     my $colspan=2;
@@ -8426,6 +9024,7 @@ sub authtype_names {
                       krb4   => 'Kerberos 4',
                       krb5   => 'Kerberos 5',
                       loc    => 'Local',
+                      lti    => 'LTI',
                   );
     return %lt;
 }
@@ -8494,12 +9093,13 @@ sub print_defaults {
                           '<td><span class="LC_nobreak">'.$titles->{$item}.
                           '</span></td><td class="LC_right_item" colspan="3">';
             if ($item eq 'auth_def') {
-                my @authtypes = ('internal','krb4','krb5','localauth');
+                my @authtypes = ('internal','krb4','krb5','localauth','lti');
                 my %shortauth = (
                                  internal => 'int',
                                  krb4 => 'krb4',
                                  krb5 => 'krb5',
-                                 localauth  => 'loc'
+                                 localauth  => 'loc',
+                                 lti => 'lti',
                                 );
                 my %authnames = &authtype_names();
                 foreach my $auth (@authtypes) {
@@ -8872,10 +9472,13 @@ sub legacy_scantronformat {
     my ($url,$error);
     my @statinfo = &Apache::lonnet::stat_file($newurl);
     if ((!@statinfo) || ($statinfo[0] eq 'no_such_dir')) {
+        my $modified = [];
         (my $result,$url) =
-            &publishlogo($r,'copy',$legacyfile,$dom,$confname,'scantron',
-                         '','',$newfile);
-        if ($result ne 'ok') {
+            &Apache::lonconfigsettings::publishlogo($r,'copy',$legacyfile,$dom,$confname,
+                                                    'scantron','','',$newfile,$modified);
+        if ($result eq 'ok') {
+            &update_modify_urls($r,$modified);
+        } else {
             $error = &mt("An error occurred publishing the [_1] bubblesheet format file in RES space. Error was: [_2].",$newfile,$result);
         }
     }
@@ -9408,6 +10011,7 @@ $portal_js
 
 ENDSCRIPT
     }
+    return;
 }
 
 sub passwords_javascript {
@@ -9421,7 +10025,7 @@ sub passwords_javascript {
             passmax => 'Warning: maximum password length must be a positive integer (or blank).',
             passnum => 'Warning: number of previous passwords to save must be a positive integer (or blank).',
         );
-    } elsif ($prefix eq 'secrets') {
+    } elsif (($prefix eq 'ltisecrets') || ($prefix eq 'toolsecrets')) {
         %intalert = &Apache::lonlocal::texthash (
             passmin => 'Warning: minimum secret length must be a positive integer greater than 6.',
             passmax => 'Warning: maximum secret length must be a positive integer (or blank).',
@@ -9731,7 +10335,7 @@ sub build_category_rows {
 
 sub modifiable_userdata_row {
     my ($context,$item,$settings,$numinrow,$rowcount,$usertypes,$fieldsref,$titlesref,
-        $rowid,$customcss,$rowstyle) = @_;
+        $rowid,$customcss,$rowstyle,$itemdesc) = @_;
     my ($role,$rolename,$statustype);
     $role = $item;
     if ($context eq 'cancreate') {
@@ -9752,6 +10356,8 @@ sub modifiable_userdata_row {
         } else {
             $rolename = $role;
         }
+    } elsif ($context eq 'lti') {
+        $rolename = &mt('Institutional data used (if available)');
     } else {
         if ($role eq 'cr') {
             $rolename = &mt('Custom role');
@@ -9789,42 +10395,41 @@ sub modifiable_userdata_row {
     if ($rowid) {
         $rowid = ' id="'.$rowid.'"';
     }
-
     $output = '<tr '.$css_class.$rowid.'>'.
               '<td><span class="LC_nobreak">'.$rolename.'</span></td>'.
               '<td class="LC_left_item" colspan="2"><table>';
     my $rem;
     my %checks;
     if (ref($settings) eq 'HASH') {
-        if (ref($settings->{$context}) eq 'HASH') {
+        my $hashref;
+        if ($context eq 'lti') {
+            if (ref($settings) eq 'HASH') {
+                $hashref = $settings->{'instdata'};
+            }
+        } elsif (ref($settings->{$context}) eq 'HASH') {
             if (ref($settings->{$context}->{$role}) eq 'HASH') {
-                my $hashref = $settings->{$context}->{$role};
-                if ($role eq 'emailusername') {
-                    if ($statustype) {
-                        if (ref($settings->{$context}->{$role}->{$statustype}) eq 'HASH') {
-                            $hashref = $settings->{$context}->{$role}->{$statustype};
-                            if (ref($hashref) eq 'HASH') { 
-                                foreach my $field (@fields) {
-                                    if ($hashref->{$field}) {
-                                        $checks{$field} = $hashref->{$field};
-                                    }
-                                }
-                            }
-                        }
+                $hashref = $settings->{'lti_instdata'};
+            }
+            if ($role eq 'emailusername') {
+                if ($statustype) {
+                    if (ref($settings->{$context}->{$role}->{$statustype}) eq 'HASH') {
+                        $hashref = $settings->{$context}->{$role}->{$statustype};
                     }
-                } else {
-                    if (ref($hashref) eq 'HASH') {
-                        foreach my $field (@fields) {
-                            if ($hashref->{$field}) {
-                                $checks{$field} = ' checked="checked" ';
-                            }
-                        }
+                }
+            }
+        }
+        if (ref($hashref) eq 'HASH') {
+            foreach my $field (@fields) {
+                if ($hashref->{$field}) {
+                    if ($role eq 'emailusername') {
+                        $checks{$field} = $hashref->{$field};
+                    } else {
+                        $checks{$field} = ' checked="checked" ';
                     }
                 }
             }
         }
     }
-
     my $total = scalar(@fields);
     for (my $i=0; $i<$total; $i++) {
         $rem = $i%($numinrow);
@@ -9838,7 +10443,7 @@ sub modifiable_userdata_row {
         unless ($role eq 'emailusername') {
             if (exists($checks{$fields[$i]})) {
                 $check = $checks{$fields[$i]};
-            } else {
+            } elsif ($context ne 'lti') {
                 if ($role eq 'st') {
                     if (ref($settings) ne 'HASH') {
                         $check = ' checked="checked" '; 
@@ -9848,6 +10453,7 @@ sub modifiable_userdata_row {
         }
         $output .= '<td class="LC_left_item">'.
                    '<span class="LC_nobreak">';
+        my $prefix = 'canmodify';
         if ($role eq 'emailusername') {
             unless ($checks{$fields[$i]} =~ /^(required|optional)$/) {
                 $checks{$fields[$i]} = 'omit';
@@ -9858,13 +10464,16 @@ sub modifiable_userdata_row {
                     $checked='checked="checked" ';
                 }
                 $output .= '<label>'.
-                           '<input type="radio" name="canmodify_'.$item.'_'.$fields[$i].'" value="'.$option.'" '.$checked.'/>'.
+                           '<input type="radio" name="'.$prefix.'_'.$item.'_'.$fields[$i].'" value="'.$option.'" '.$checked.'/>'.
                            &mt($option).'</label>'.('&nbsp;' x2);
             }
             $output .= '<i>'.$fieldtitles{$fields[$i]}.'</i>';
         } else {
+            if ($context eq 'lti') {
+                $prefix = 'lti';
+            }
             $output .= '<label>'.
-                       '<input type="checkbox" name="canmodify_'.$role.'" '.
+                       '<input type="checkbox" name="'.$prefix.'_'.$role.'" '.
                        'value="'.$fields[$i].'"'.$check.'/>'.$fieldtitles{$fields[$i]}.
                        '</label>';
         }
@@ -9951,7 +10560,7 @@ sub insttypes_row {
                 $output .= '<td class="LC_left_item">'.
                            '<span class="LC_nobreak"><label>'.
                            '<input type="checkbox" name="'.$context.'" '.
-                           'value="'.$types->[$i].'"'.$check.$onclick.'/>'.
+                           'value="'.$types->[$i].'"'.$check.$onclick.' />'.
                            $usertypes->{$types->[$i]}.'</label></span></td>';
             }
         }
@@ -10234,13 +10843,16 @@ sub modify_login {
                 if ($addedfile ne '') {
                     push(@allnew,$addedfile);
                 }
+                my $modified = [];
                 foreach my $lang (@allnew) {
                     my $formelem = 'loginhelpurl_'.$lang;
                     if ($lang eq $env{'form.loginhelpurl_add_lang'}) {
                         $formelem = 'loginhelpurl_add_file';
                     }
-                    (my $result,$newurl{$lang}) = &publishlogo($r,'upload',$formelem,$dom,$confname,
-                                                               "help/$lang",'','',$newfile{$lang});
+                    (my $result,$newurl{$lang}) =
+                        &Apache::lonconfigsettings::publishlogo($r,'upload',$formelem,$dom,$confname,
+                                                                "help/$lang",'','',$newfile{$lang},
+                                                                $modified);
                     if ($result eq 'ok') {
                         $loginhash{'login'}{'helpurl'}{$lang} = $newurl{$lang};
                         $changes{'helpurl'}{$lang} = 1;
@@ -10253,6 +10865,7 @@ sub modify_login {
                         }
                     }
                 }
+                &update_modify_urls($r,$modified);
             } else {
                 $error = &mt("Upload of custom log-in help file(s) failed because an author role could not be assigned to a Domain Configuration user ([_1]) in domain: [_2].  Error was: [_3].",$confname,$dom,$author_ok);
             }
@@ -10310,11 +10923,14 @@ sub modify_login {
             if ($switchserver) {
                 $error = &mt("Upload of custom markup is not permitted to this server: [_1]",$switchserver);
             } elsif ($author_ok eq 'ok') {
+                my $modified = [];
                 foreach my $lonhost (@newhosts) {
                     my $formelem = 'loginheadtag_'.$lonhost;
-                    (my $result,$newheadtagurls{$lonhost}) = &publishlogo($r,'upload',$formelem,$dom,$confname,
-                                                                          "login/headtag/$lonhost",'','',
-                                                                          $env{'form.loginheadtag_'.$lonhost.'.filename'});
+                    (my $result,$newheadtagurls{$lonhost}) =
+                        &Apache::lonconfigsettings::publishlogo($r,'upload',$formelem,$dom,$confname,
+                                                                "login/headtag/$lonhost",'','',
+                                                                $env{'form.loginheadtag_'.$lonhost.'.filename'},
+                                                                $modified);
                     if ($result eq 'ok') {
                         $loginhash{'login'}{'headtag'}{$lonhost}{'url'} = $newheadtagurls{$lonhost};
                         $changes{'headtag'}{$lonhost} = 1;
@@ -10331,6 +10947,7 @@ sub modify_login {
                         }
                     }
                 }
+                &update_modify_urls($r,$modified);
             } else {
                 $error = &mt("Upload of custom markup file(s) failed because an author role could not be assigned to a Domain Configuration user ([_1]) in domain: [_2].  Error was: [_3].",$confname,$dom,$author_ok);
             }
@@ -10405,11 +11022,14 @@ sub modify_login {
             if ($switchserver) {
                 $error = &mt("Upload of SSO Button Image is not permitted to this server: [_1].",$switchserver);
             } elsif ($author_ok eq 'ok') {
+                my $modified = [];
                 foreach my $lonhost (@newsamlimgs) {
                     my $formelem = 'saml_img_'.$lonhost;
-                    my ($result,$imgurl) = &publishlogo($r,'upload',$formelem,$dom,$confname,
-                                                        "login/saml/$lonhost",'','',
-                                                        $env{'form.saml_img_'.$lonhost.'.filename'});
+                    my ($result,$imgurl) =
+                        &Apache::lonconfigsettings::publishlogo($r,'upload',$formelem,$dom,$confname,
+                                                                "login/saml/$lonhost",'','',
+                                                                $env{'form.saml_img_'.$lonhost.'.filename'},
+                                                                $modified);
                     if ($result eq 'ok') {
                         $currsaml{$lonhost}{'img'} = $imgurl;
                         $loginhash{'login'}{'saml'}{$lonhost}{'img'} = $imgurl;
@@ -10420,6 +11040,7 @@ sub modify_login {
                         $errors .= '<li><span class="LC_error">'.$puberror.'</span></li>';
                     }
                 }
+                &update_modify_urls($r,$modified);
             } else {
                 $error = &mt("Upload of SSO button image file(s) failed because an author role could not be assigned to a Domain Configuration user ([_1]) in domain: [_2].  Error was: [_3].",$confname,$dom,$author_ok);
             }
@@ -11124,12 +11745,15 @@ sub modify_colors {
                         $error = &mt("Upload of [_1] image for $role page(s) is not permitted to this server: [_2]",$choices{$img},$switchserver);
                     } else {
                         if ($author_ok eq 'ok') {
+                            my $modified = [];
                             my ($result,$logourl) = 
-                                &publishlogo($r,'upload',$role.'_'.$img,
-                                           $dom,$confname,$img,$width,$height);
+                                &Apache::lonconfigsettings::publishlogo($r,'upload',$role.'_'.$img,
+                                                                        $dom,$confname,$img,$width,$height,
+                                                                        '',$modified);
                             if ($result eq 'ok') {
                                 $confhash->{$role}{$img} = $logourl;
                                 $changes{$role}{'images'}{$img} = 1;
+                                &update_modify_urls($r,$modified);
                             } else {
                                 $error = &mt("Upload of [_1] image for $role page(s) failed because an error occurred publishing the file in RES space. Error was: [_2].",$choices{img},$result);
                             }
@@ -11151,12 +11775,15 @@ sub modify_colors {
 # is confname an author?
                         if ($switchserver eq '') {
                             if ($author_ok eq 'ok') {
+                                my $modified = [];
                                 my ($result,$logourl) = 
-                               &publishlogo($r,'copy',$domconfig->{$role}{$img},
-                                            $dom,$confname,$img,$width,$height);
+                                    &Apache::lonconfigsettings::publishlogo($r,'copy',$domconfig->{$role}{$img},
+                                                                            $dom,$confname,$img,$width,$height,
+                                                                            '',$modified);
                                 if ($result eq 'ok') {
                                     $confhash->{$role}{$img} = $logourl;
 				    $changes{$role}{'images'}{$img} = 1;
+                                    &update_modify_urls($r,$modified);
                                 }
                             }
                         }
@@ -11450,228 +12077,16 @@ sub check_authorstatus {
     return $author_ok;
 }
 
-sub publishlogo {
-    my ($r,$action,$formname,$dom,$confname,$subdir,$thumbwidth,$thumbheight,$savefileas) = @_;
-    my ($output,$fname,$logourl);
-    if ($action eq 'upload') {
-        $fname=$env{'form.'.$formname.'.filename'};
-        chop($env{'form.'.$formname});
-    } else {
-        ($fname) = ($formname =~ /([^\/]+)$/);
-    }
-    if ($savefileas ne '') {
-        $fname = $savefileas;
-    }
-    $fname=&Apache::lonnet::clean_filename($fname);
-# See if there is anything left
-    unless ($fname) { return ('error: no uploaded file'); }
-    $fname="$subdir/$fname";
-    my $docroot=$r->dir_config('lonDocRoot');
-    my $filepath="$docroot/priv";
-    my $relpath = "$dom/$confname";
-    my ($fnamepath,$file,$fetchthumb);
-    $file=$fname;
-    if ($fname=~m|/|) {
-        ($fnamepath,$file) = ($fname =~ m|^(.*)/([^/]+)$|);
-    }
-    my @parts=split(/\//,"$filepath/$relpath/$fnamepath");
-    my $count;
-    for ($count=5;$count<=$#parts;$count++) {
-        $filepath.="/$parts[$count]";
-        if ((-e $filepath)!=1) {
-            mkdir($filepath,02770);
-        }
-    }
-    # Check for bad extension and disallow upload
-    if ($file=~/\.(\w+)$/ &&
-        (&Apache::loncommon::fileembstyle($1) eq 'hdn')) {
-        $output = 
-            &mt('Invalid file extension ([_1]) - reserved for internal use.',$1); 
-    } elsif ($file=~/\.(\w+)$/ &&
-        !defined(&Apache::loncommon::fileembstyle($1))) {
-        $output = &mt('Unrecognized file extension ([_1]) - rename the file with a proper extension and re-upload.',$1);
-    } elsif ($file=~/\.(\d+)\.(\w+)$/) {
-        $output = &mt('Filename not allowed - rename the file to remove the number immediately before the file extension([_1]) and re-upload.',$2);
-    } elsif (-d "$filepath/$file") {
-        $output = &mt('Filename is a directory name - rename the file and re-upload');
-    } else {
-        my $source = $filepath.'/'.$file;
-        my $logfile;
-        if (!open($logfile,">>",$source.'.log')) {
-            return (&mt('No write permission to Authoring Space'));
-        }
-        print $logfile
-"\n================= Publish ".localtime()." ================\n".
-$env{'user.name'}.':'.$env{'user.domain'}."\n";
-# Save the file
-        if (!open(FH,">",$source)) {
-            &Apache::lonnet::logthis('Failed to create '.$source);
-            return (&mt('Failed to create file'));
-        }
-        if ($action eq 'upload') {
-            if (!print FH ($env{'form.'.$formname})) {
-                &Apache::lonnet::logthis('Failed to write to '.$source);
-                return (&mt('Failed to write file'));
-            }
-        } else {
-            my $original = &Apache::lonnet::filelocation('',$formname);
-            if(!copy($original,$source)) {
-                &Apache::lonnet::logthis('Failed to copy '.$original.' to '.$source);
-                return (&mt('Failed to write file'));
-            }
-        }
-        close(FH);
-        chmod(0660, $source); # Permissions to rw-rw---.
-
-        my $targetdir=$docroot.'/res/'.$dom.'/'.$confname .'/'.$fnamepath;
-        my $copyfile=$targetdir.'/'.$file;
-
-        my @parts=split(/\//,$targetdir);
-        my $path="/$parts[1]/$parts[2]/$parts[3]/$parts[4]";
-        for (my $count=5;$count<=$#parts;$count++) {
-            $path.="/$parts[$count]";
-            if (!-e $path) {
-                print $logfile "\nCreating directory ".$path;
-                mkdir($path,02770);
-            }
-        }
-        my $versionresult;
-        if (-e $copyfile) {
-            $versionresult = &logo_versioning($targetdir,$file,$logfile);
-        } else {
-            $versionresult = 'ok';
-        }
-        if ($versionresult eq 'ok') {
-            if (copy($source,$copyfile)) {
-                print $logfile "\nCopied original source to ".$copyfile."\n";
-                $output = 'ok';
-                $logourl = '/res/'.$dom.'/'.$confname.'/'.$fname;
-                push(@{$modified_urls},[$copyfile,$source]);
-                my $metaoutput = 
-                    &write_metadata($dom,$confname,$formname,$targetdir,$file,$logfile);
-                unless ($registered_cleanup) {
-                    my $handlers = $r->get_handlers('PerlCleanupHandler');
-                    $r->set_handlers('PerlCleanupHandler' => [\&notifysubscribed,@{$handlers}]);
-                    $registered_cleanup=1;
-                }
-            } else {
-                print $logfile "\nUnable to write ".$copyfile.':'.$!."\n";
-                $output = &mt('Failed to copy file to RES space').", $!";
-            }
-            if (($thumbwidth =~ /^\d+$/) && ($thumbheight =~ /^\d+$/)) {
-                my $inputfile = $filepath.'/'.$file;
-                my $outfile = $filepath.'/'.'tn-'.$file;
-                my ($fullwidth,$fullheight) = &check_dimensions($inputfile);
-                if ($fullwidth ne '' && $fullheight ne '') { 
-                    if ($fullwidth > $thumbwidth && $fullheight > $thumbheight) {
-                        my $thumbsize = $thumbwidth.'x'.$thumbheight;
-                        my @args = ('convert','-sample',$thumbsize,$inputfile,$outfile);
-                        system({$args[0]} @args);
-                        chmod(0660, $filepath.'/tn-'.$file);
-                        if (-e $outfile) {
-                            my $copyfile=$targetdir.'/tn-'.$file;
-                            if (copy($outfile,$copyfile)) {
-                                print $logfile "\nCopied source to ".$copyfile."\n";
-                                my $thumb_metaoutput = 
-                                    &write_metadata($dom,$confname,$formname,
-                                                    $targetdir,'tn-'.$file,$logfile);
-                                push(@{$modified_urls},[$copyfile,$outfile]);
-                                unless ($registered_cleanup) {
-                                    my $handlers = $r->get_handlers('PerlCleanupHandler');
-                                    $r->set_handlers('PerlCleanupHandler' => [\&notifysubscribed,@{$handlers}]);
-                                    $registered_cleanup=1;
-                                }
-                            } else {
-                                print $logfile "\nUnable to write ".$copyfile.
-                                               ':'.$!."\n";
-                            }
-                        }
-                    }
-                }
-            }
-        } else {
-            $output = $versionresult;
-        }
-    }
-    return ($output,$logourl);
-}
-
-sub logo_versioning {
-    my ($targetdir,$file,$logfile) = @_;
-    my $target = $targetdir.'/'.$file;
-    my ($maxversion,$fn,$extn,$output);
-    $maxversion = 0;
-    if ($file =~ /^(.+)\.(\w+)$/) {
-        $fn=$1;
-        $extn=$2;
-    }
-    opendir(DIR,$targetdir);
-    while (my $filename=readdir(DIR)) {
-        if ($filename=~/\Q$fn\E\.(\d+)\.\Q$extn\E$/) {
-            $maxversion=($1>$maxversion)?$1:$maxversion;
+sub update_modify_urls {
+    my ($r,$modified) = @_;
+    if ((ref($modified) eq 'ARRAY') && (@{$modified})) {
+        push(@{$modified_urls},$modified);
+        unless ($registered_cleanup) {
+            my $handlers = $r->get_handlers('PerlCleanupHandler');
+            $r->set_handlers('PerlCleanupHandler' => [\&notifysubscribed,@{$handlers}]);
+            $registered_cleanup=1;
         }
     }
-    $maxversion++;
-    print $logfile "\nCreating old version ".$maxversion."\n";
-    my $copyfile=$targetdir.'/'.$fn.'.'.$maxversion.'.'.$extn;
-    if (copy($target,$copyfile)) {
-        print $logfile "Copied old target to ".$copyfile."\n";
-        $copyfile=$copyfile.'.meta';
-        if (copy($target.'.meta',$copyfile)) {
-            print $logfile "Copied old target metadata to ".$copyfile."\n";
-            $output = 'ok';
-        } else {
-            print $logfile "Unable to write metadata ".$copyfile.':'.$!."\n";
-            $output = &mt('Failed to copy old meta').", $!, ";
-        }
-    } else {
-        print $logfile "Unable to write ".$copyfile.':'.$!."\n";
-        $output = &mt('Failed to copy old target').", $!, ";
-    }
-    return $output;
-}
-
-sub write_metadata {
-    my ($dom,$confname,$formname,$targetdir,$file,$logfile) = @_;
-    my (%metadatafields,%metadatakeys,$output);
-    $metadatafields{'title'}=$formname;
-    $metadatafields{'creationdate'}=time;
-    $metadatafields{'lastrevisiondate'}=time;
-    $metadatafields{'copyright'}='public';
-    $metadatafields{'modifyinguser'}=$env{'user.name'}.':'.
-                                         $env{'user.domain'};
-    $metadatafields{'authorspace'}=$confname.':'.$dom;
-    $metadatafields{'domain'}=$dom;
-    {
-        print $logfile "\nWrite metadata file for ".$targetdir.'/'.$file;
-        my $mfh;
-        if (open($mfh,">",$targetdir.'/'.$file.'.meta')) {
-            foreach (sort(keys(%metadatafields))) {
-                unless ($_=~/\./) {
-                    my $unikey=$_;
-                    $unikey=~/^([A-Za-z]+)/;
-                    my $tag=$1;
-                    $tag=~tr/A-Z/a-z/;
-                    print $mfh "\n\<$tag";
-                    foreach (split(/\,/,$metadatakeys{$unikey})) {
-                        my $value=$metadatafields{$unikey.'.'.$_};
-                        $value=~s/\"/\'\'/g;
-                        print $mfh ' '.$_.'="'.$value.'"';
-                    }
-                    print $mfh '>'.
-                        &HTML::Entities::encode($metadatafields{$unikey},'<>&"')
-                            .'</'.$tag.'>';
-                }
-            }
-            $output = 'ok';
-            print $logfile "\nWrote metadata";
-            close($mfh);
-        } else {
-            print $logfile "\nFailed to open metadata file";
-            $output = &mt('Could not write metadata');
-        }
-    }
-    return $output;
 }
 
 sub notifysubscribed {
@@ -11722,15 +12137,21 @@ sub subscribed_hosts {
 
 sub check_switchserver {
     my ($dom,$confname) = @_;
-    my ($allowed,$switchserver);
-    my $home = &Apache::lonnet::homeserver($confname,$dom);
-    if ($home eq 'no_host') {
+    my ($allowed,$switchserver,$home);
+    if ($confname eq '') {
         $home = &Apache::lonnet::domain($dom,'primary');
+    } else {
+        $home = &Apache::lonnet::homeserver($confname,$dom);
+        if ($home eq 'no_host') {
+            $home = &Apache::lonnet::domain($dom,'primary');
+        }
     }
     my @ids=&Apache::lonnet::current_machine_ids();
     foreach my $id (@ids) { if ($id eq $home) { $allowed=1; } }
     if (!$allowed) {
-	$switchserver='<a href="/adm/switchserver?otherserver='.$home.'&amp;role=dc./'.$dom.'/&amp;destinationurl=/adm/domainprefs">'.&mt('Switch Server').'</a>';
+	$switchserver='<a href="/adm/switchserver?otherserver='.$home.'&amp;role='.
+                      &HTML::Entities::encode($env{'request.role'},'\'<>"&').
+                      '&amp;destinationurl=/adm/domainprefs">'.&mt('Switch Server').'</a>';
     }
     return $switchserver;
 }
@@ -11747,7 +12168,7 @@ sub modify_quotas {
         $context = $action;
     }
     if ($context eq 'requestcourses') {
-        @usertools = ('official','unofficial','community','textbook');
+        @usertools = ('official','unofficial','community','textbook','lti');
         @options =('norequest','approval','validate','autolimit');
         %validations = &Apache::lonnet::auto_courserequest_checks($dom);
         %titles = &courserequest_titles();
@@ -11796,7 +12217,7 @@ sub modify_quotas {
         my @approvalnotify = &Apache::loncommon::get_env_multiple('form.'.$context.'notifyapproval');
         @approvalnotify = sort(@approvalnotify);
         $confhash{'notify'}{'approval'} = join(',',@approvalnotify);
-        my @crstypes = ('official','unofficial','community','textbook');
+        my @crstypes = ('official','unofficial','community','textbook','lti');
         my @hasuniquecode = &Apache::loncommon::get_env_multiple('form.uniquecode');
         foreach my $type (@hasuniquecode) {
             if (grep(/^\Q$type\E$/,@crstypes)) {
@@ -11918,7 +12339,7 @@ sub modify_quotas {
                                             &Apache::lonnet::logthis($error);
                                             $errors .= '<li><span class="LC_error">'.$error.'</span></li>';
                                         }
-                                    } 
+                                    }
                                 } elsif ($domconfig{$action}{$type}{$key}{'image'}) {
                                     $confhash{$type}{$key}{'image'} = 
                                         $domconfig{$action}{$type}{$key}{'image'};
@@ -12453,11 +12874,14 @@ sub process_textbook_image {
             $error = &mt('Upload of textbook image is not permitted to this server: [_1]',
                          $switchserver);
         } elsif ($author_ok eq 'ok') {
+            my $modified = [];
             my ($result,$imageurl) =
-                &publishlogo($r,'upload',$caller,$dom,$confname,
-                             "$type/$cdom/$cnum/cover",$width,$height);
+                &Apache::lonconfigsettings::publishlogo($r,'upload',$caller,$dom,$confname,
+                                                        "$type/$cdom/$cnum/cover",$width,$height,
+                                                        '',$modified);
             if ($result eq 'ok') {
                 $url = $imageurl;
+                &update_modify_urls($r,$modified);
             } else {
                 $error = &mt("Upload of [_1] failed because an error occurred publishing the file in RES space. Error was: [_2].",$filename,$result);
             }
@@ -12472,361 +12896,809 @@ sub process_textbook_image {
 
 sub modify_ltitools {
     my ($r,$dom,$action,$lastactref,%domconfig) = @_;
-    my %domdefaults = &Apache::lonnet::get_domain_defaults($dom,1);
-    my ($newid,@allpos,%changes,%confhash,%encconfig,$errors,$resulttext);
+    my (%currtoolsec,%secchanges,%newtoolsec,%newkeyset);
+    &fetch_secrets($dom,'toolsec',\%domconfig,\%currtoolsec,\%secchanges,\%newtoolsec,\%newkeyset);
+
     my $confname = $dom.'-domainconfig';
     my $servadm = $r->dir_config('lonAdmEMail');
     my ($configuserok,$author_ok,$switchserver) = &config_check($dom,$confname,$servadm);
-    my (%posslti,%possfield);
-    my @courseroles = ('cc','in','ta','ep','st');
-    my @ltiroles = qw(Instructor ContentDeveloper TeachingAssistant Learner);
-    map { $posslti{$_} = 1; } @ltiroles;
-    my @allfields = ('fullname','firstname','lastname','email','user','roles');
-    map { $possfield{$_} = 1; } @allfields;
-    my %lt = &ltitools_names();
-    if ($env{'form.ltitools_add'}) {
-        my $title = $env{'form.ltitools_add_title'};
-        $title =~ s/(`)/'/g;
-        ($newid,my $error) = &get_ltitools_id($dom,$title);
-        if ($newid) {
-            my $position = $env{'form.ltitools_add_pos'};
-            $position =~ s/\D+//g;
-            if ($position ne '') {
-                $allpos[$position] = $newid;
-            }
-            $changes{$newid} = 1;
-            foreach my $item ('title','url','key','secret','lifetime') {
-                $env{'form.ltitools_add_'.$item} =~ s/(`)/'/g;
-                if ($item eq 'lifetime') {
-                    $env{'form.ltitools_add_'.$item} =~ s/[^\d.]//g;
+
+    my ($resulttext,$ltitoolsoutput,$is_home,$errors,%ltitoolschg,%newtoolsenc,%newltitools);
+    my $toolserror =
+        &Apache::courseprefs::process_ltitools($r,$dom,$confname,$domconfig{'ltitools'},\%ltitoolschg,'domain',
+                                               $lastactref,$configuserok,$switchserver,$author_ok);
+
+    my $home = &Apache::lonnet::domain($dom,'primary');
+    unless (($home eq 'no_host') || ($home eq '')) {
+        my @ids=&Apache::lonnet::current_machine_ids();
+        foreach my $id (@ids) { if ($id eq $home) { $is_home=1; last; } }
+    }
+
+    if (keys(%ltitoolschg)) {
+        foreach my $id (keys(%ltitoolschg)) {
+            if (ref($ltitoolschg{$id}) eq 'HASH') {
+                foreach my $inner (keys(%{$ltitoolschg{$id}})) {
+                    if (($inner eq 'secret') || ($inner eq 'key')) {
+                        if ($is_home) {
+                            $newtoolsenc{$id}{$inner} = $ltitoolschg{$id}{$inner};
+                        }
+                    }
                 }
-                if ($env{'form.ltitools_add_'.$item}) {
-                    if (($item eq 'key') || ($item eq 'secret')) {
-                        $encconfig{$newid}{$item} = $env{'form.ltitools_add_'.$item};
-                    } else {
-                        $confhash{$newid}{$item} = $env{'form.ltitools_add_'.$item};
+            }
+        }
+        $ltitoolsoutput = &Apache::courseprefs::store_ltitools($dom,'','domain',\%ltitoolschg,$domconfig{'ltitools'});
+        if (keys(%ltitoolschg)) {
+            %newltitools = %ltitoolschg;
+        }
+    }
+    if (ref($domconfig{'ltitools'}) eq 'HASH') {
+        foreach my $id (%{$domconfig{'ltitools'}}) {
+            next if ($id !~ /^\d+$/);
+            unless (exists($ltitoolschg{$id})) {
+                if (ref($domconfig{'ltitools'}{$id}) eq 'HASH') {
+                    foreach my $inner (keys(%{$domconfig{'ltitools'}{$id}})) {
+                        if (($inner eq 'secret') || ($inner eq 'key')) {
+                            if ($is_home) {
+                                $newtoolsenc{$id}{$inner} = $domconfig{'ltitools'}{$id}{$inner};
+                            }
+                        } else {
+                            $newltitools{$id}{$inner} = $domconfig{'ltitools'}{$id}{$inner};
+                        }
                     }
+                } else {
+                    $newltitools{$id} = $domconfig{'ltitools'}{$id};
                 }
             }
-            if ($env{'form.ltitools_add_version'} eq 'LTI-1p0') {
-                $confhash{$newid}{'version'} = $env{'form.ltitools_add_version'};
+        }
+    }
+    if ($toolserror) {
+        $errors = '<li>'.$toolserror.'</li>';
+    }
+    if ((keys(%ltitoolschg) == 0) && (keys(%secchanges) == 0)) {
+        $resulttext = &mt('No changes made.');
+        if ($errors) {
+            $resulttext .= '<br />'.&mt('The following errors occurred: ').'<ul>'.
+                                 $errors.'</ul>';
+        }
+        return $resulttext;
+    }
+    my %ltitoolshash = (
+                          $action => { %newltitools }
+                       );
+    if (keys(%secchanges)) {
+        $ltitoolshash{'toolsec'} = \%newtoolsec;
+    }
+    my $putresult = &Apache::lonnet::put_dom('configuration',\%ltitoolshash,$dom);
+    if ($putresult eq 'ok') {
+        my %keystore;
+        if ($is_home) {
+            my %toolsenchash = (
+                                   $action => { %newtoolsenc }
+                               );
+            &Apache::lonnet::put_dom('encconfig',\%toolsenchash,$dom,undef,1);
+            my $cachetime = 24*60*60;
+            &Apache::lonnet::do_cache_new('ltitoolsenc',$dom,\%newtoolsenc,$cachetime);
+            &store_security($dom,'ltitools',\%secchanges,\%newkeyset,\%keystore,$lastactref);
+        }
+        $resulttext = &mt('Changes made:').'<ul>';
+        if (keys(%secchanges) > 0) {
+            $resulttext .= &lti_security_results($dom,'ltitools',\%secchanges,\%newtoolsec,\%newkeyset,\%keystore);
+        }
+        if (keys(%ltitoolschg) > 0) {
+            $resulttext .= $ltitoolsoutput;
+        }
+        my $cachetime = 24*60*60;
+        &Apache::lonnet::do_cache_new('ltitools',$dom,\%newltitools,$cachetime);
+        if (ref($lastactref) eq 'HASH') {
+            $lastactref->{'ltitools'} = 1;
+        }
+    } else {
+        $errors .= '<li><span class="LC_error">'.&mt('Failed to save changes').'</span></li>';
+    }
+    if ($errors) {
+        $resulttext .= '<p>'.&mt('The following errors occurred: ').'<ul>'.
+                       $errors.'</ul></p>';
+    }
+    return $resulttext;
+}
+
+sub fetch_secrets {
+    my ($dom,$context,$domconfig,$currsec,$secchanges,$newsec,$newkeyset) = @_;
+    my %keyset;
+    %{$currsec} = ();
+    $newsec->{'private'}{'keys'} = [];
+    $newsec->{'encrypt'} = {};
+    $newsec->{'rules'} = {};
+    if ($context eq 'ltisec') {
+        $newsec->{'linkprot'} = {};
+    }
+    if (ref($domconfig->{$context}) eq 'HASH') {
+        %{$currsec} = %{$domconfig->{$context}};
+        if ($context eq 'ltisec') {
+            if (ref($currsec->{'linkprot'}) eq 'HASH') {
+                foreach my $id (keys(%{$currsec->{'linkprot'}})) {
+                    unless ($id =~ /^\d+$/) {
+                        delete($currsec->{'linkprot'}{$id});
+                    }
+                }
             }
-            if ($env{'form.ltitools_add_msgtype'} eq 'basic-lti-launch-request') {
-                $confhash{$newid}{'msgtype'} = $env{'form.ltitools_add_msgtype'};
+        }
+        if (ref($currsec->{'private'}) eq 'HASH') {
+            if (ref($currsec->{'private'}{'keys'}) eq 'ARRAY') {
+                $newsec->{'private'}{'keys'} = $currsec->{'private'}{'keys'};
+                map { $keyset{$_} = 1; } @{$currsec->{'private'}{'keys'}};
             }
-            if ($env{'form.ltitools_add_sigmethod'} eq 'HMAC-SHA256') {
-                $confhash{$newid}{'sigmethod'} = $env{'form.ltitools_add_sigmethod'};
+        }
+    }
+    my @items= ('crs','dom');
+    if ($context eq 'ltisec') {
+        push(@items,'consumers');
+    }
+    foreach my $item (@items) {
+        my $formelement;
+        if (($context eq 'toolsec') || ($item eq 'consumers')) {
+            $formelement = 'form.'.$context.'_'.$item;
+        } else {
+            $formelement = 'form.'.$context.'_'.$item.'linkprot';
+        }
+        if ($env{$formelement}) {
+            $newsec->{'encrypt'}{$item} = 1;
+            if (ref($currsec->{'encrypt'}) eq 'HASH') {
+                unless ($currsec->{'encrypt'}{$item}) {
+                    $secchanges->{'encrypt'} = 1;
+                }
             } else {
-                $confhash{$newid}{'sigmethod'} = 'HMAC-SHA1';
+                $secchanges->{'encrypt'} = 1;
+            }
+        } elsif (ref($currsec->{'encrypt'}) eq 'HASH') {
+            if ($currsec->{'encrypt'}{$item}) {
+                $secchanges->{'encrypt'} = 1;
             }
-            foreach my $item ('width','height','linktext','explanation') {
-                $env{'form.ltitools_add_'.$item} =~ s/^\s+//;
-                $env{'form.ltitools_add_'.$item} =~ s/\s+$//;
-                if (($item eq 'width') || ($item eq 'height')) {
-                    if ($env{'form.ltitools_add_'.$item} =~ /^\d+$/) {
-                        $confhash{$newid}{'display'}{$item} = $env{'form.ltitools_add_'.$item};
+        }
+    }
+    my $secrets;
+    if ($context eq 'ltisec') {
+        $secrets = 'ltisecrets';
+    } else {
+        $secrets = 'toolsecrets';
+    }
+    unless (exists($currsec->{'rules'})) {
+        $currsec->{'rules'} = {};
+    }
+    &password_rule_changes($secrets,$newsec->{'rules'},$currsec->{'rules'},$secchanges);
+
+    my @ids=&Apache::lonnet::current_machine_ids();
+    my %servers = &Apache::lonnet::get_servers($dom,'library');
+
+    foreach my $hostid (keys(%servers)) {
+        if (($hostid ne '') && (grep(/^\Q$hostid\E$/,@ids))) {
+            my $keyitem = 'form.'.$context.'_privkey_'.$hostid;
+            if (exists($env{$keyitem})) {
+                $env{$keyitem} =~ s/(`)/'/g;
+                if ($keyset{$hostid}) {
+                    if ($env{'form.'.$context.'_changeprivkey_'.$hostid}) {
+                        if ($env{$keyitem} ne '') {
+                            $secchanges->{'private'} = 1;
+                            $newkeyset->{$hostid} = $env{$keyitem};
+                        }
                     }
-                } else {
-                    if ($env{'form.ltitools_add_'.$item} ne '') {
-                        $confhash{$newid}{'display'}{$item} = $env{'form.ltitools_add_'.$item};
+                } elsif ($env{$keyitem} ne '') {
+                    unless (grep(/^\Q$hostid\E$/,@{$newsec->{'private'}{'keys'}})) {
+                        push(@{$newsec->{'private'}{'keys'}},$hostid);
                     }
+                    $secchanges->{'private'} = 1;
+                    $newkeyset->{$hostid} = $env{$keyitem};
                 }
             }
-            if ($env{'form.ltitools_add_target'} eq 'window') {
-                $confhash{$newid}{'display'}{'target'} = $env{'form.ltitools_add_target'};
-            } elsif ($env{'form.ltitools_add_target'} eq 'tab') {
-                $confhash{$newid}{'display'}{'target'} = $env{'form.ltitools_add_target'};
+        }
+    }
+}
+
+sub store_security {
+    my ($dom,$context,$secchanges,$newkeyset,$keystore) = @_;
+    return unless ((ref($secchanges) eq 'HASH') && (ref($newkeyset) eq 'HASH') &&
+                   (ref($keystore) eq 'HASH'));
+    if (keys(%{$secchanges})) {
+        if ($secchanges->{'private'}) {
+            my $who = &escape($env{'user.name'}.':'.$env{'user.domain'});
+            foreach my $hostid (keys(%{$newkeyset})) {
+                my $storehash = {
+                                   key => $newkeyset->{$hostid},
+                                   who => $env{'user.name'}.':'.$env{'user.domain'},
+                                };
+                $keystore->{$hostid} = &Apache::lonnet::store_dom($storehash,$context,'private',
+                                                                  $dom,$hostid);
+            }
+        }
+    }
+}
+
+sub lti_security_results {
+    my ($dom,$context,$secchanges,$newsec,$newkeyset,$keystore) = @_;
+    my $output;
+    my %domdefaults = &Apache::lonnet::get_domain_defaults($dom);
+    my $needs_update;
+    foreach my $item (keys(%{$secchanges})) {
+        if ($item eq 'encrypt') {
+            $needs_update = 1;
+            my %encrypted;
+            if ($context eq 'lti') {
+                %encrypted = (
+                              crs  => {
+                                        on => &mt('Encryption of stored link protection secrets defined in courses enabled'),
+                                        off => &mt('Encryption of stored link protection secrets defined in courses disabled'),
+                                      },
+                              dom => {
+                                       on => &mt('Encryption of stored link protection secrets defined in domain enabled'),
+                                       off => &mt('Encryption of stored link protection secrets defined in domain disabled'),
+                                     },
+                              consumers => {
+                                             on => &mt('Encryption of stored consumer secrets defined in domain enabled'),
+                                             off => &mt('Encryption of stored consumer secrets defined in domain disabled'),
+                                           },
+                             );
             } else {
-                $confhash{$newid}{'display'}{'target'} = 'iframe';
+                %encrypted = (
+                              crs  => {
+                                        on => &mt('Encryption of stored external tool secrets defined in courses enabled'),
+                                        off => &mt('Encryption of stored external tool secrets defined in courses disabled'),
+                                      },
+                              dom => {
+                                       on => &mt('Encryption of stored external tool secrets defined in domain enabled'),
+                                       off => &mt('Encryption of stored external tool secrets defined in domain disabled'),
+                                     },
+                             );
+
             }
-            if ($env{'form.ltitools_add_image.filename'} ne '') {
-                my ($imageurl,$error) =
-                    &process_ltitools_image($r,$dom,$confname,'ltitools_add_image',$newid,
-                                            $configuserok,$switchserver,$author_ok);
-                if ($imageurl) {
-                    $confhash{$newid}{'image'} = $imageurl;
+            my @types= ('crs','dom');
+            if ($context eq 'lti') {
+                foreach my $type (@types) {
+                    undef($domdefaults{'linkprotenc_'.$type});
                 }
-                if ($error) {
-                    &Apache::lonnet::logthis($error);
-                    $errors .= '<li><span class="LC_error">'.$error.'</span></li>';
+                push(@types,'consumers');
+                undef($domdefaults{'ltienc_consumers'});
+            } elsif ($context eq 'ltitools') {
+                foreach my $type (@types) {
+                    undef($domdefaults{'toolenc_'.$type});
                 }
             }
-            my @fields = &Apache::loncommon::get_env_multiple('form.ltitools_add_fields');
-            foreach my $field (@fields) {
-                if ($possfield{$field}) {
-                    if ($field eq 'roles') {
-                        foreach my $role (@courseroles) {
-                            my $choice = $env{'form.ltitools_add_roles_'.$role};
-                            if (($choice ne '') && ($posslti{$choice})) {
-                                $confhash{$newid}{'roles'}{$role} = $choice;
-                                if ($role eq 'cc') {
-                                    $confhash{$newid}{'roles'}{'co'} = $choice;
-                                }
+            foreach my $type (@types) {
+                my $shown = $encrypted{$type}{'off'};
+                if (ref($newsec->{$item}) eq 'HASH') {
+                    if ($newsec->{$item}{$type}) {
+                        if ($context eq 'lti') {
+                            if ($type eq 'consumers') {
+                                $domdefaults{'ltienc_consumers'} = 1;
+                            } else {
+                                $domdefaults{'linkprotenc_'.$type} = 1;
                             }
+                        } elsif ($context eq 'ltitools') {
+                            $domdefaults{'toolenc_'.$type} = 1;
                         }
-                    } else {
-                        $confhash{$newid}{'fields'}{$field} = 1;
+                        $shown = $encrypted{$type}{'on'};
                     }
                 }
+                $output .= '<li>'.$shown.'</li>';
+            }
+        } elsif ($item eq 'rules') {
+            my %titles = &Apache::lonlocal::texthash(
+                                      min   => 'Minimum password length',
+                                      max   => 'Maximum password length',
+                                      chars => 'Required characters',
+                         );
+            foreach my $rule ('min','max') {
+                if ($newsec->{rules}{$rule} eq '') {
+                    if ($rule eq 'min') {
+                        $output .= '<li>'.&mt('[_1] not set.',$titles{$rule});
+                                   ' '.&mt('Default of [_1] will be used',
+                                           $Apache::lonnet::passwdmin).'</li>';
+                    } else {
+                        $output .= '<li>'.&mt('[_1] set to none',$titles{$rule}).'</li>';
+                    }
+                } else {
+                    $output .= '<li>'.&mt('[_1] set to [_2]',$titles{$rule},$newsec->{rules}{$rule}).'</li>';
+                }
+            }
+            if (ref($newsec->{'rules'}{'chars'}) eq 'ARRAY') {
+                if (@{$newsec->{'rules'}{'chars'}} > 0) {
+                    my %rulenames = &Apache::lonlocal::texthash(
+                                             uc => 'At least one upper case letter',
+                                             lc => 'At least one lower case letter',
+                                             num => 'At least one number',
+                                             spec => 'At least one non-alphanumeric',
+                                    );
+                    my $needed = '<ul><li>'.
+                                 join('</li><li>',map {$rulenames{$_} } @{$newsec->{'rules'}{'chars'}}).
+                                 '</li></ul>';
+                    $output .= '<li>'.&mt('[_1] set to: [_2]',$titles{'chars'},$needed).'</li>';
+                } else {
+                    $output .= '<li>'.&mt('[_1] set to none',$titles{'chars'}).'</li>';
+                }
+            } else {
+                $output .= '<li>'.&mt('[_1] set to none',$titles{'chars'}).'</li>';
+            }
+        } elsif ($item eq 'private') {
+            $needs_update = 1;
+            if ($context eq 'lti') {
+                undef($domdefaults{'ltiprivhosts'});
+            } elsif ($context eq 'ltitools') {
+                undef($domdefaults{'toolprivhosts'});
             }
-            if (ref($confhash{$newid}{'fields'}) eq 'HASH') {
-                if ($confhash{$newid}{'fields'}{'user'}) {
-                    if ($env{'form.ltitools_userincdom_add'}) {
-                        $confhash{$newid}{'incdom'} = 1;
+            if (keys(%{$newkeyset})) {
+                my @privhosts;
+                foreach my $hostid (sort(keys(%{$newkeyset}))) {
+                    if ($keystore->{$hostid} eq 'ok') {
+                        $output .= '<li>'.&mt('Encryption key for storage of shared secrets saved for [_1]',$hostid).'</li>';
+                        unless (grep(/^\Q$hostid\E$/,@privhosts)) {
+                            push(@privhosts,$hostid);
+                        }
+                    }
+                }
+                if (@privhosts) {
+                    if ($context eq 'lti') {
+                        $domdefaults{'ltiprivhosts'} = \@privhosts;
+                    } elsif ($context eq 'ltitools') {
+                        $domdefaults{'toolprivhosts'} = \@privhosts;
                     }
                 }
             }
-            my @courseconfig = &Apache::loncommon::get_env_multiple('form.ltitools_courseconfig');
-            foreach my $item (@courseconfig) {
-                $confhash{$newid}{'crsconf'}{$item} = 1;
+        } elsif ($item eq 'linkprot') {
+            next;
+        }
+    }
+    if ($needs_update) {
+        my $cachetime = 24*60*60;
+        &Apache::lonnet::do_cache_new('domdefaults',$dom,\%domdefaults,$cachetime);
+    }
+    return $output;
+}
+
+sub modify_lti {
+    my ($r,$dom,$action,$lastactref,%domconfig) = @_;
+    my %domdefaults = &Apache::lonnet::get_domain_defaults($dom,1);
+    my ($newid,@allpos,%changes,%confhash,%ltienc,$errors,$resulttext);
+    my (%posslti,%posslticrs,%posscrstype);
+    my @courseroles = ('cc','in','ta','ep','st');
+    my @ltiroles = qw(Learner Instructor ContentDeveloper TeachingAssistant Mentor Member Manager Administrator);
+    my @lticourseroles = qw(Instructor TeachingAssistant Mentor Learner);
+    my @coursetypes = ('official','unofficial','community','textbook','placement','lti');
+    my %coursetypetitles = &Apache::lonlocal::texthash (
+                               official   => 'Official',
+                               unofficial => 'Unofficial',
+                               community  => 'Community',
+                               textbook   => 'Textbook',
+                               placement  => 'Placement Test',
+                               lti        => 'LTI Provider',
+    );
+    my %fieldtitles = &Apache::loncommon::personal_data_fieldtitles();
+    my %lt = &lti_names();
+    map { $posslti{$_} = 1; } @ltiroles;
+    map { $posslticrs{$_} = 1; } @lticourseroles;
+    map { $posscrstype{$_} = 1; } @coursetypes;
+
+    my %menutitles = &ltimenu_titles();
+    my (%currltisec,%secchanges,%newltisec,%newltienc,%newkeyset);
+
+    &fetch_secrets($dom,'ltisec',\%domconfig,\%currltisec,\%secchanges,\%newltisec,\%newkeyset);
+
+    my (%linkprotchg,$linkprotoutput,$is_home);
+    my $proterror = &Apache::courseprefs::process_linkprot($dom,'',$currltisec{'linkprot'},
+                                                           \%linkprotchg,'domain');
+    my $home = &Apache::lonnet::domain($dom,'primary');
+    unless (($home eq 'no_host') || ($home eq '')) {
+        my @ids=&Apache::lonnet::current_machine_ids();
+        foreach my $id (@ids) { if ($id eq $home) { $is_home=1; } }
+    }
+
+    if (keys(%linkprotchg)) {
+        $secchanges{'linkprot'} = 1;
+        my %oldlinkprot;
+        if (ref($currltisec{'linkprot'}) eq 'HASH') {
+            %oldlinkprot = %{$currltisec{'linkprot'}};
+        }
+        foreach my $id (keys(%linkprotchg)) {
+            if (ref($linkprotchg{$id}) eq 'HASH') {
+                foreach my $inner (keys(%{$linkprotchg{$id}})) {
+                    if (($inner eq 'secret') || ($inner eq 'key')) {
+                        if ($is_home) {
+                            $newltienc{$id}{$inner} = $linkprotchg{$id}{$inner};
+                        }
+                    }
+                }
+            } else {
+                $newltisec{'linkprot'}{$id} = $linkprotchg{$id};
             }
-            if ($env{'form.ltitools_add_custom'}) {
-                my $name = $env{'form.ltitools_add_custom_name'};
-                my $value = $env{'form.ltitools_add_custom_value'};
-                $value =~ s/(`)/'/g;
-                $name =~ s/(`)/'/g;
-                $confhash{$newid}{'custom'}{$name} = $value;
+        }
+        $linkprotoutput = &Apache::courseprefs::store_linkprot($dom,'','domain',\%linkprotchg,\%oldlinkprot);
+        if (keys(%linkprotchg)) {
+            %{$newltisec{'linkprot'}} = %linkprotchg;
+        }
+    }
+    if (ref($currltisec{'linkprot'}) eq 'HASH') {
+        foreach my $id (%{$currltisec{'linkprot'}}) {
+            next if ($id !~ /^\d+$/);
+            unless (exists($linkprotchg{$id})) {
+                if (ref($currltisec{'linkprot'}{$id}) eq 'HASH') {
+                    foreach my $inner (keys(%{$currltisec{'linkprot'}{$id}})) {
+                        if (($inner eq 'secret') || ($inner eq 'key')) {
+                            if ($is_home) {
+                                $newltienc{$id}{$inner} = $currltisec{'linkprot'}{$id}{$inner};
+                            }
+                        } else {
+                            $newltisec{'linkprot'}{$id}{$inner} = $currltisec{'linkprot'}{$id}{$inner};
+                        }
+                    }
+                } else {
+                    $newltisec{'linkprot'}{$id} = $currltisec{'linkprot'}{$id};
+                }
             }
+        }
+    }
+    if ($proterror) {
+        $errors .= '<li>'.$proterror.'</li>';
+    }
+    my (@items,%deletions,%itemids);
+    if ($env{'form.lti_add'}) {
+        my $consumer = $env{'form.lti_consumer_add'};
+        $consumer =~ s/(`)/'/g;
+        ($newid,my $error) = &get_lti_id($dom,$consumer);
+        if ($newid) {
+            $itemids{'add'} = $newid;
+            push(@items,'add');
+            $changes{$newid} = 1;
         } else {
-            my $error = &mt('Failed to acquire unique ID for new external tool');
+            my $error = &mt('Failed to acquire unique ID for new LTI configuration');
             $errors .= '<li><span class="LC_error">'.$error.'</span></li>';
         }
     }
     if (ref($domconfig{$action}) eq 'HASH') {
-        my %deletions;
-        my @todelete = &Apache::loncommon::get_env_multiple('form.ltitools_del');
+        my @todelete = &Apache::loncommon::get_env_multiple('form.lti_del');
         if (@todelete) {
             map { $deletions{$_} = 1; } @todelete;
         }
-        my %customadds;
-        my @newcustom = &Apache::loncommon::get_env_multiple('form.ltitools_customadd');
-        if (@newcustom) {
-            map { $customadds{$_} = 1; } @newcustom;
-        }
-        my %imgdeletions;
-        my @todeleteimages = &Apache::loncommon::get_env_multiple('form.ltitools_image_del');
-        if (@todeleteimages) {
-            map { $imgdeletions{$_} = 1; } @todeleteimages;
-        }
-        my $maxnum = $env{'form.ltitools_maxnum'};
-        for (my $i=0; $i<=$maxnum; $i++) {
-            my $itemid = $env{'form.ltitools_id_'.$i};
+        my $maxnum = $env{'form.lti_maxnum'};
+        for (my $i=0; $i<$maxnum; $i++) {
+            my $itemid = $env{'form.lti_id_'.$i};
             $itemid =~ s/\D+//g;
             if (ref($domconfig{$action}{$itemid}) eq 'HASH') {
                 if ($deletions{$itemid}) {
-                    if ($domconfig{$action}{$itemid}{'image'}) {
-                        #FIXME need to obsolete item in RES space
-                    }
-                    $changes{$itemid} = $domconfig{$action}{$itemid}{'title'};
-                    next;
+                    $changes{$itemid} = $domconfig{$action}{$itemid}{'consumer'};
                 } else {
-                    my $newpos = $env{'form.ltitools_'.$itemid};
-                    $newpos =~ s/\D+//g;
-                    foreach my $item ('title','url','lifetime') {
-                        $confhash{$itemid}{$item} = $env{'form.ltitools_'.$item.'_'.$i};
-                        if ($domconfig{$action}{$itemid}{$item} ne $confhash{$itemid}{$item}) {
-                            $changes{$itemid} = 1;
+                    push(@items,$i);
+                    $itemids{$i} = $itemid;
+                }
+            }
+        }
+    }
+    my (%keystore,$secstored);
+    if ($is_home) {
+        &store_security($dom,'lti',\%secchanges,\%newkeyset,\%keystore);
+    }
+
+    my ($cipher,$privnum);
+    if ((@items > 0) && ($is_home)) {
+        ($cipher,$privnum) = &get_priv_creds($dom,$home,$secchanges{'encrypt'},
+                                             $newltisec{'encrypt'},$keystore{$home});
+    }
+    foreach my $idx (@items) {
+        my $itemid = $itemids{$idx};
+        next unless ($itemid);
+        my %currlti;
+        unless ($idx eq 'add') {
+            if (ref($domconfig{$action}) eq 'HASH') {
+                if (ref($domconfig{$action}{$itemid}) eq 'HASH') {
+                    %currlti = %{$domconfig{$action}{$itemid}};
+                }
+            }
+        }
+        my $position = $env{'form.lti_pos_'.$itemid};
+        $position =~ s/\D+//g;
+        if ($position ne '') {
+            $allpos[$position] = $itemid;
+        }
+        foreach my $item ('consumer','lifetime','requser','crsinc') {
+            my $formitem = 'form.lti_'.$item.'_'.$idx;
+            $env{$formitem} =~ s/(`)/'/g;
+            if ($item eq 'lifetime') {
+                $env{$formitem} =~ s/[^\d.]//g;
+            }
+            if ($env{$formitem} ne '') {
+                $confhash{$itemid}{$item} = $env{$formitem};
+                unless (($idx eq 'add') || ($changes{$itemid})) {
+                    if ($currlti{$item} ne $confhash{$itemid}{$item}) {
+                        $changes{$itemid} = 1;
+                    }
+                }
+            }
+        }
+        if ($env{'form.lti_version_'.$idx} eq 'LTI-1p0') {
+            $confhash{$itemid}{'version'} = $env{'form.lti_version_'.$idx};
+        }
+        if ($confhash{$itemid}{'requser'}) {
+            if ($env{'form.lti_mapuser_'.$idx} eq 'sourcedid') {
+                $confhash{$itemid}{'mapuser'} = 'lis_person_sourcedid';
+            } elsif ($env{'form.lti_mapuser_'.$idx} eq 'email') {
+                $confhash{$itemid}{'mapuser'} = 'lis_person_contact_email_primary';
+            } elsif ($env{'form.lti_mapuser_'.$idx} eq 'other') {
+                my $mapuser = $env{'form.lti_customuser_'.$idx};
+                $mapuser =~ s/(`)/'/g;
+                $mapuser =~ s/^\s+|\s+$//g;
+                $confhash{$itemid}{'mapuser'} = $mapuser;
+            }
+            my @possmakeuser = &Apache::loncommon::get_env_multiple('form.lti_makeuser_'.$idx);
+            my @makeuser;
+            foreach my $ltirole (sort(@possmakeuser)) {
+                if ($posslti{$ltirole}) {
+                    push(@makeuser,$ltirole);
+                }
+            }
+            $confhash{$itemid}{'makeuser'} = \@makeuser;
+            if (@makeuser) {
+                my $lcauth = $env{'form.lti_lcauth_'.$idx};
+                if ($lcauth =~ /^(internal|krb4|krb5|localauth)$/) {
+                    $confhash{$itemid}{'lcauth'} = $lcauth;
+                    if ($lcauth ne 'internal') {
+                        my $lcauthparm = $env{'form.lti_lcauthparm_'.$idx};
+                        $lcauthparm =~ s/^(\s+|\s+)$//g;
+                        $lcauthparm =~ s/`//g;
+                        if ($lcauthparm ne '') {
+                            $confhash{$itemid}{'lcauthparm'} = $lcauthparm;
                         }
                     }
-                    foreach my $item ('key','secret') {
-                        $encconfig{$itemid}{$item} = $env{'form.ltitools_'.$item.'_'.$i};
-                        if ($domconfig{$action}{$itemid}{$item} ne $encconfig{$itemid}{$item}) {
-                            $changes{$itemid} = 1;
+                } else {
+                    $confhash{$itemid}{'lcauth'} = 'lti';
+                }
+            }
+            my @possinstdata =  &Apache::loncommon::get_env_multiple('form.lti_instdata_'.$idx);
+            if (@possinstdata) {
+                foreach my $field (@possinstdata) {
+                    if (exists($fieldtitles{$field})) {
+                        push(@{$confhash{$itemid}{'instdata'}});
+                    }
+                }
+            }
+            if ($env{'form.lti_callback_'.$idx}) {
+                if ($env{'form.lti_callbackparam_'.$idx}) {
+                    my $callback = $env{'form.lti_callbackparam_'.$idx};
+                    $callback =~ s/^\s+|\s+$//g;
+                    $confhash{$itemid}{'callback'} = $callback;
+                }
+            }
+            foreach my $field ('topmenu','inlinemenu') {
+                if ($env{'form.lti_'.$field.'_'.$idx}) {
+                    $confhash{$itemid}{$field} = 1;
+                }
+            }
+            if ($env{'form.lti_topmenu_'.$idx} || $env{'form.lti_inlinemenu_'.$idx}) {
+                $confhash{$itemid}{lcmenu} = [];
+                my @possmenu = &Apache::loncommon::get_env_multiple('form.lti_menuitem_'.$idx);
+                foreach my $field (@possmenu) {
+                    if (exists($menutitles{$field})) {
+                        if ($field eq 'grades') {
+                            next unless ($env{'form.lti_inlinemenu_'.$idx});
                         }
+                        push(@{$confhash{$itemid}{lcmenu}},$field);
+                    }
+                }
+            }
+            if ($confhash{$itemid}{'crsinc'}) {
+                if (($env{'form.lti_mapcrs_'.$idx} eq 'course_offering_sourcedid') ||
+                    ($env{'form.lti_mapcrs_'.$idx} eq 'context_id'))  {
+                    $confhash{$itemid}{'mapcrs'} = $env{'form.lti_mapcrs_'.$idx};
+                } elsif ($env{'form.lti_mapcrs_'.$idx} eq 'other') {
+                    my $mapcrs = $env{'form.lti_mapcrsfield_'.$idx};
+                    $mapcrs =~ s/(`)/'/g;
+                    $mapcrs =~ s/^\s+|\s+$//g;
+                    $confhash{$itemid}{'mapcrs'} = $mapcrs;
+                }
+                my @posstypes = &Apache::loncommon::get_env_multiple('form.lti_mapcrstype_'.$idx);
+                my @crstypes;
+                foreach my $type (sort(@posstypes)) {
+                    if ($posscrstype{$type}) {
+                        push(@crstypes,$type);
+                    }
+                }
+                $confhash{$itemid}{'mapcrstype'} = \@crstypes;
+                if ($env{'form.lti_storecrs_'.$idx}) {
+                    $confhash{$itemid}{'storecrs'} = 1;
+                }
+                if ($env{'form.lti_makecrs_'.$idx}) {
+                    $confhash{$itemid}{'makecrs'} = 1;
+                }
+                foreach my $ltirole (@lticourseroles) {
+                    my $possrole = $env{'form.lti_maprole_'.$ltirole.'_'.$idx};
+                    if (grep(/^\Q$possrole\E$/,@courseroles)) {
+                        $confhash{$itemid}{'maproles'}{$ltirole} = $possrole;
                     }
-                    if ($env{'form.ltitools_version_'.$i} eq 'LTI-1p0') {
-                        $confhash{$itemid}{'version'} = $env{'form.ltitools_version_'.$i};
+                }
+                my @possenroll = &Apache::loncommon::get_env_multiple('form.lti_selfenroll_'.$idx);
+                my @selfenroll;
+                foreach my $type (sort(@possenroll)) {
+                    if ($posslticrs{$type}) {
+                        push(@selfenroll,$type);
                     }
-                    if ($env{'form.ltitools_msgtype_'.$i} eq 'basic-lti-launch-request') {
-                        $confhash{$itemid}{'msgtype'} = $env{'form.ltitools_msgtype_'.$i};
+                }
+                $confhash{$itemid}{'selfenroll'} = \@selfenroll;
+                if ($env{'form.lti_crssec_'.$idx}) {
+                    if ($env{'form.lti_crssecsrc_'.$idx} eq 'course_section_sourcedid') {
+                        $confhash{$itemid}{'section'} = $env{'form.lti_crssecsrc_'.$idx};
+                    } elsif ($env{'form.lti_crssecsrc_'.$idx} eq 'other') {
+                        my $section = $env{'form.lti_customsection_'.$idx};
+                        $section =~ s/(`)/'/g;
+                        $section =~ s/^\s+|\s+$//g;
+                        if ($section ne '') {
+                            $confhash{$itemid}{'section'} = $section;
+                        }
                     }
-                    if ($env{'form.ltitools_sigmethod_'.$i} eq 'HMAC-SHA256') {
-                        $confhash{$itemid}{'sigmethod'} = $env{'form.ltitools_sigmethod_'.$i};
+                }
+                foreach my $field ('passback','roster') {
+                    if ($env{'form.lti_'.$field.'_'.$idx}) {
+                        $confhash{$itemid}{$field} = 1;
+                    }
+                }
+                if ($env{'form.lti_passback_'.$idx}) {
+                    if ($env{'form.lti_passbackformat_'.$idx} eq '1.0') {
+                        $confhash{$itemid}{'passbackformat'} = '1.0';
                     } else {
-                        $confhash{$itemid}{'sigmethod'} = 'HMAC-SHA1';
+                        $confhash{$itemid}{'passbackformat'} = '1.1';
                     }
-                    if ($domconfig{$action}{$itemid}{'sigmethod'} eq '') {
-                        if ($confhash{$itemid}{'sigmethod'} ne 'HMAC-SHA1') {
+                }
+            }
+            unless (($idx eq 'add') || ($changes{$itemid})) {
+                if ($confhash{$itemid}{'crsinc'}) {
+                    foreach my $field ('mapcrs','storecrs','makecrs','section','passback','roster') {
+                        if ($currlti{$field} ne $confhash{$itemid}{$field}) {
                             $changes{$itemid} = 1;
                         }
-                    } elsif ($domconfig{$action}{$itemid}{'sigmethod'} ne $confhash{$itemid}{'sigmethod'}) {
-                        $changes{$itemid} = 1;
                     }
-                    foreach my $size ('width','height') {
-                        $env{'form.ltitools_'.$size.'_'.$i} =~ s/^\s+//;
-                        $env{'form.ltitools_'.$size.'_'.$i} =~ s/\s+$//;
-                        if ($env{'form.ltitools_'.$size.'_'.$i} =~ /^\d+$/) {
-                            $confhash{$itemid}{'display'}{$size} = $env{'form.ltitools_'.$size.'_'.$i};
-                            if (ref($domconfig{$action}{$itemid}{'display'}) eq 'HASH') {
-                                if ($domconfig{$action}{$itemid}{'display'}{$size} ne $confhash{$itemid}{'display'}{$size}) {
-                                    $changes{$itemid} = 1;
-                                }
-                            } else {
-                                $changes{$itemid} = 1;
-                            }
-                        } elsif (ref($domconfig{$action}{$itemid}{'display'}) eq 'HASH') {
-                            if ($domconfig{$action}{$itemid}{'display'}{$size} ne '') {
+                    unless ($changes{$itemid}) {
+                        if ($currlti{'passback'} eq $confhash{$itemid}{'passback'}) {
+                            if ($currlti{'passbackformat'} ne $confhash{$itemid}{'passbackformat'}) {
                                 $changes{$itemid} = 1;
                             }
                         }
                     }
-                    foreach my $item ('linktext','explanation') {
-                        $env{'form.ltitools_'.$item.'_'.$i} =~ s/^\s+//;
-                        $env{'form.ltitools_'.$item.'_'.$i} =~ s/\s+$//;
-                        if ($env{'form.ltitools_'.$item.'_'.$i} ne '') {
-                            $confhash{$itemid}{'display'}{$item} = $env{'form.ltitools_'.$item.'_'.$i};
-                            if (ref($domconfig{$action}{$itemid}{'display'}) eq 'HASH') {
-                                if ($domconfig{$action}{$itemid}{'display'}{$item} ne $confhash{$itemid}{'display'}{$item}) {
+                    foreach my $field ('mapcrstype','selfenroll') {
+                        unless ($changes{$itemid}) {
+                            if (ref($currlti{$field}) eq 'ARRAY') {
+                                if (ref($confhash{$itemid}{$field}) eq 'ARRAY') {
+                                    my @diffs = &Apache::loncommon::compare_arrays($currlti{$field},
+                                                                                   $confhash{$itemid}{$field});
+                                    if (@diffs) {
+                                        $changes{$itemid} = 1;
+                                    }
+                                } elsif (@{$currlti{$field}} > 0) {
                                     $changes{$itemid} = 1;
                                 }
-                            } else {
-                                $changes{$itemid} = 1;
-                            }
-                        } elsif (ref($domconfig{$action}{$itemid}{'display'}) eq 'HASH') {
-                            if ($domconfig{$action}{$itemid}{'display'}{$item} ne '') {
-                                $changes{$itemid} = 1;
-                            }
-                        }
-                    }
-                    if ($env{'form.ltitools_target_'.$i} eq 'window') {
-                        $confhash{$itemid}{'display'}{'target'} = $env{'form.ltitools_target_'.$i};
-                    } elsif ($env{'form.ltitools_target_'.$i} eq 'tab') {
-                        $confhash{$itemid}{'display'}{'target'} = $env{'form.ltitools_target_'.$i};
-                    } else {
-                        $confhash{$itemid}{'display'}{'target'} = 'iframe';
-                    }
-                    if (ref($domconfig{$action}{$itemid}{'display'}) eq 'HASH') {
-                        if ($domconfig{$action}{$itemid}{'display'}{'target'} ne $confhash{$itemid}{'display'}{'target'}) {
-                            $changes{$itemid} = 1;
-                        }
-                    } else {
-                        $changes{$itemid} = 1;
-                    }
-                    my @courseconfig = &Apache::loncommon::get_env_multiple('form.ltitools_courseconfig_'.$i);
-                    foreach my $item ('label','title','target','linktext','explanation','append') {
-                        if (grep(/^\Q$item\E$/,@courseconfig)) {
-                            $confhash{$itemid}{'crsconf'}{$item} = 1;
-                            if (ref($domconfig{$action}{$itemid}{'crsconf'}) eq 'HASH') {
-                                if ($domconfig{$action}{$itemid}{'crsconf'}{$item} ne $confhash{$itemid}{'crsconf'}{$item}) {
+                            } elsif (ref($confhash{$itemid}{$field}) eq 'ARRAY') {
+                                if (@{$confhash{$itemid}{$field}} > 0) {
                                     $changes{$itemid} = 1;
                                 }
-                            } else {
-                                $changes{$itemid} = 1;
                             }
                         }
                     }
-                    my @fields = &Apache::loncommon::get_env_multiple('form.ltitools_fields_'.$i);
-                    foreach my $field (@fields) {
-                        if ($possfield{$field}) {
-                            if ($field eq 'roles') {
-                                foreach my $role (@courseroles) {
-                                    my $choice = $env{'form.ltitools_roles_'.$role.'_'.$i};
-                                    if (($choice ne '') && ($posslti{$choice})) {
-                                        $confhash{$itemid}{'roles'}{$role} = $choice;
-                                        if ($role eq 'cc') {
-                                            $confhash{$itemid}{'roles'}{'co'} = $choice;
-                                        }
+                    unless ($changes{$itemid}) {
+                        if (ref($currlti{'maproles'}) eq 'HASH') {
+                            if (ref($confhash{$itemid}{'maproles'}) eq 'HASH') {
+                                foreach my $ltirole (keys(%{$currlti{'maproles'}})) {
+                                    if ($currlti{'maproles'}{$ltirole} ne
+                                        $confhash{$itemid}{'maproles'}{$ltirole}) {
+                                        $changes{$itemid} = 1;
+                                        last;
                                     }
-                                    if (ref($domconfig{$action}{$itemid}{'roles'}) eq 'HASH') {
-                                        if ($domconfig{$action}{$itemid}{'roles'}{$role} ne $confhash{$itemid}{'roles'}{$role}) {
+                                }
+                                unless ($changes{$itemid}) {
+                                    foreach my $ltirole (keys(%{$confhash{$itemid}{'maproles'}})) {
+                                        if ($confhash{$itemid}{'maproles'}{$ltirole} ne
+                                            $currlti{'maproles'}{$ltirole}) {
                                             $changes{$itemid} = 1;
+                                            last;
                                         }
-                                    } elsif ($confhash{$itemid}{'roles'}{$role}) {
-                                        $changes{$itemid} = 1;
                                     }
                                 }
-                            } else {
-                                $confhash{$itemid}{'fields'}{$field} = 1;
-                                if (ref($domconfig{$action}{$itemid}{'fields'}) eq 'HASH') {
-                                    if ($domconfig{$action}{$itemid}{'fields'}{$field} ne $confhash{$itemid}{'fields'}{$field}) {
-                                        $changes{$itemid} = 1;
-                                    }
-                                } else {
+                            } elsif (keys(%{$currlti{'maproles'}}) > 0) {
+                                $changes{$itemid} = 1;
+                            }
+                        } elsif (ref($confhash{$itemid}{'maproles'}) eq 'HASH') {
+                            unless ($changes{$itemid}) {
+                                if (keys(%{$confhash{$itemid}{'maproles'}}) > 0) {
                                     $changes{$itemid} = 1;
                                 }
                             }
                         }
                     }
-                    if (ref($confhash{$itemid}{'fields'}) eq 'HASH') {
-                        if ($confhash{$itemid}{'fields'}{'user'}) {
-                            if ($env{'form.ltitools_userincdom_'.$i}) {
-                                $confhash{$itemid}{'incdom'} = 1;
-                            }
-                            if ($domconfig{$action}{$itemid}{'incdom'} ne $confhash{$itemid}{'incdom'}) {
-                                $changes{$itemid} = 1;
+                }
+                unless ($changes{$itemid}) {
+                    foreach my $field ('mapuser','lcauth','lcauthparm','topmenu','inlinemenu','callback') {
+                        if ($currlti{$field} ne $confhash{$itemid}{$field}) {
+                            $changes{$itemid} = 1;
+                        }
+                    }
+                    unless ($changes{$itemid}) {
+                        foreach my $field ('makeuser','lcmenu') {
+                            if (ref($currlti{$field}) eq 'ARRAY') {
+                                if (ref($confhash{$itemid}{$field}) eq 'ARRAY') {
+                                    my @diffs = &Apache::loncommon::compare_arrays($currlti{$field},
+                                                                                   $confhash{$itemid}{$field});
+                                    if (@diffs) {
+                                        $changes{$itemid} = 1;
+                                    }
+                                } elsif (@{$currlti{$field}} > 0) {
+                                    $changes{$itemid} = 1;
+                                }
+                            } elsif (ref($confhash{$itemid}{$field}) eq 'ARRAY') {
+                                if (@{$confhash{$itemid}{$field}} > 0) {
+                                    $changes{$itemid} = 1;
+                                }
                             }
                         }
                     }
-                    $allpos[$newpos] = $itemid;
                 }
-                if ($imgdeletions{$itemid}) {
-                    $changes{$itemid} = 1;
-                    #FIXME need to obsolete item in RES space
-                } elsif ($env{'form.ltitools_image_'.$i.'.filename'}) {
-                    my ($imgurl,$error) = &process_ltitools_image($r,$dom,$confname,'ltitools_image_'.$i,
-                                                                 $itemid,$configuserok,$switchserver,
-                                                                 $author_ok);
-                    if ($imgurl) {
-                        $confhash{$itemid}{'image'} = $imgurl;
+            }
+        }
+        if ($is_home) {
+            my $keyitem = 'form.lti_key_'.$idx;
+            $env{$keyitem} =~ s/(`)/'/g;
+            if ($env{$keyitem} ne '') {
+                $ltienc{$itemid}{'key'} = $env{$keyitem};
+                unless ($changes{$itemid}) {
+                    if ($currlti{'key'} ne $env{$keyitem}) {
                         $changes{$itemid} = 1;
                     }
-                    if ($error) {
-                        &Apache::lonnet::logthis($error);
-                        $errors .= '<li><span class="LC_error">'.$error.'</span></li>';
-                    }
-                } elsif ($domconfig{$action}{$itemid}{'image'}) {
-                    $confhash{$itemid}{'image'} =
-                       $domconfig{$action}{$itemid}{'image'};
-                }
-                if ($customadds{$i}) {
-                    my $name = $env{'form.ltitools_custom_name_'.$i};
-                    $name =~ s/(`)/'/g;
-                    $name =~ s/^\s+//;
-                    $name =~ s/\s+$//;
-                    my $value = $env{'form.ltitools_custom_value_'.$i};
-                    $value =~ s/(`)/'/g;
-                    $value =~ s/^\s+//;
-                    $value =~ s/\s+$//;
-                    if ($name ne '') {
-                        $confhash{$itemid}{'custom'}{$name} = $value;
+                }
+            }
+            my $secretitem = 'form.lti_secret_'.$idx;
+            $env{$secretitem} =~ s/(`)/'/g;
+            if ($currlti{'usable'}) {
+                if ($env{'form.lti_changesecret_'.$idx}) {
+                    if ($env{$secretitem} ne '') {
+                        if ($privnum && $cipher) {
+                            $ltienc{$itemid}{'secret'} = $cipher->encrypt_hex($env{$secretitem});
+                            $confhash{$itemid}{'cipher'} = $privnum;
+                        } else {
+                            $ltienc{$itemid}{'secret'} = $env{$secretitem};
+                        }
                         $changes{$itemid} = 1;
                     }
+                } else {
+                    $ltienc{$itemid}{'secret'} = $currlti{'secret'};
+                    $confhash{$itemid}{'cipher'} = $currlti{'cipher'};
                 }
-                my %customdels;
-                my @customdeletions = &Apache::loncommon::get_env_multiple('form.ltitools_customdel_'.$i);
-                if (@customdeletions) {
-                    $changes{$itemid} = 1;
+                if (ref($ltienc{$itemid}) eq 'HASH') {
+                    if (($ltienc{$itemid}{'key'} ne '') && ($ltienc{$itemid}{'secret'} ne '')) {
+                        $confhash{$itemid}{'usable'} = 1;
+                    }
                 }
-                map { $customdels{$_} = 1; } @customdeletions;
-                if (ref($domconfig{$action}{$itemid}{'custom'}) eq 'HASH') {
-                    foreach my $key (keys(%{$domconfig{$action}{$itemid}{'custom'}})) {
-                        unless ($customdels{$key}) {
-                            if ($env{'form.ltitools_customval_'.$key.'_'.$i} ne '') {
-                                $confhash{$itemid}{'custom'}{$key} = $env{'form.ltitools_customval_'.$key.'_'.$i};
-                            }
-                            if ($domconfig{$action}{$itemid}{'custom'}{$key} ne $env{'form.ltitools_customval_'.$key.'_'.$i}) {
-                                $changes{$itemid} = 1;
-                            }
-                        }
+            } elsif ($env{$secretitem} ne '') {
+                if ($privnum && $cipher) {
+                    $ltienc{$itemid}{'secret'} = $cipher->encrypt_hex($env{$secretitem});
+                    $confhash{$itemid}{'cipher'} = $privnum;
+                } else {
+                    $ltienc{$itemid}{'secret'} = $env{$secretitem};
+                }
+                if (ref($ltienc{$itemid}) eq 'HASH') {
+                    if (($ltienc{$itemid}{'key'} ne '') && ($ltienc{$itemid}{'key'} ne '')) {
+                        $confhash{$itemid}{'usable'} = 1;
                     }
                 }
-                unless ($changes{$itemid}) {
-                    foreach my $key (keys(%{$domconfig{$action}{$itemid}})) {
-                        if (ref($domconfig{$action}{$itemid}{$key}) eq 'HASH') {
-                            if (ref($confhash{$itemid}{$key}) eq 'HASH') {
-                                foreach my $innerkey (keys(%{$domconfig{$action}{$itemid}{$key}})) {
-                                    unless (exists($confhash{$itemid}{$key}{$innerkey})) {
-                                        $changes{$itemid} = 1;
-                                        last;
-                                    }
-                                }
-                            } elsif (keys(%{$domconfig{$action}{$itemid}{$key}}) > 0) {
+                $changes{$itemid} = 1;
+            }
+        }
+        unless ($changes{$itemid}) {
+            foreach my $key (keys(%currlti)) {
+                if (ref($currlti{$key}) eq 'HASH') {
+                    if (ref($confhash{$itemid}{$key}) eq 'HASH') {
+                        foreach my $innerkey (keys(%{$currlti{$key}})) {
+                            unless (exists($confhash{$itemid}{$key}{$innerkey})) {
                                 $changes{$itemid} = 1;
+                                last;
                             }
                         }
-                        last if ($changes{$itemid});
+                    } elsif (keys(%{$currlti{$key}}) > 0) {
+                        $changes{$itemid} = 1;
                     }
                 }
+                last if ($changes{$itemid});
             }
         }
     }
@@ -12846,149 +13718,232 @@ sub modify_ltitools {
             }
         }
     }
-    my %ltitoolshash = (
-                          $action => { %confhash }
-                       );
-    my $putresult = &Apache::lonnet::put_dom('configuration',\%ltitoolshash,
-                                             $dom);
+
+    if ((keys(%changes) == 0) && (keys(%secchanges) == 0)) {
+        return &mt('No changes made.');
+    }
+
+    my %ltihash = (
+                      $action => { %confhash }
+                  );
+    my %ltienchash;
+
+    if ($is_home) {
+        %ltienchash = (
+                         $action => { %ltienc }
+                      );
+    }
+    if (keys(%secchanges)) {
+        $ltihash{'ltisec'} = \%newltisec;
+        if ($secchanges{'linkprot'}) {
+            if ($is_home) {
+                $ltienchash{'linkprot'} = \%newltienc;
+            }
+        }
+    }
+    my $putresult = &Apache::lonnet::put_dom('configuration',\%ltihash,$dom);
     if ($putresult eq 'ok') {
-        my %ltienchash = (
-                             $action => { %encconfig }
-                         );
-        &Apache::lonnet::put_dom('encconfig',\%ltienchash,$dom,undef,1);
+        if (keys(%ltienchash)) {
+            &Apache::lonnet::put_dom('encconfig',\%ltienchash,$dom,undef,1);
+        }
+        $resulttext = &mt('Changes made:').'<ul>';
+        if (keys(%secchanges) > 0) {
+            $resulttext .= &lti_security_results($dom,'lti',\%secchanges,\%newltisec,\%newkeyset,\%keystore);
+            if (exists($secchanges{'linkprot'})) {
+                $resulttext .= $linkprotoutput;
+            }
+        }
         if (keys(%changes) > 0) {
             my $cachetime = 24*60*60;
-            my %ltiall = %confhash;
-            foreach my $id (keys(%ltiall)) {
-                if (ref($encconfig{$id}) eq 'HASH') {
-                    foreach my $item ('key','secret') {
-                        $ltiall{$id}{$item} = $encconfig{$id}{$item};
-                    }
-                }
-            }
-            &Apache::lonnet::do_cache_new('ltitools',$dom,\%ltiall,$cachetime);
+            &Apache::lonnet::do_cache_new('lti',$dom,\%confhash,$cachetime);
             if (ref($lastactref) eq 'HASH') {
-                $lastactref->{'ltitools'} = 1;
+                $lastactref->{'lti'} = 1;
             }
-            $resulttext = &mt('Changes made:').'<ul>';
             my %bynum;
             foreach my $itemid (sort(keys(%changes))) {
-                my $position = $confhash{$itemid}{'order'};
-                $bynum{$position} = $itemid;
+                if (ref($confhash{$itemid}) eq 'HASH') {
+                    my $position = $confhash{$itemid}{'order'};
+                    $bynum{$position} = $itemid;
+                }
             }
             foreach my $pos (sort { $a <=> $b } keys(%bynum)) {
                 my $itemid = $bynum{$pos};
-                if (ref($confhash{$itemid}) ne 'HASH') {
-                    $resulttext .= '<li>'.&mt('Deleted: [_1]',$changes{$itemid}).'</li>';
-                } else {
-                    $resulttext .= '<li><b>'.$confhash{$itemid}{'title'}.'</b>';
-                    if ($confhash{$itemid}{'image'}) {
-                        $resulttext .= '&nbsp;'.
-                                       '<img src="'.$confhash{$itemid}{'image'}.'"'.
-                                       ' alt="'.&mt('Tool Provider icon').'" />';
-                    }
-                    $resulttext .= '</li><ul>';
+                if (ref($confhash{$itemid}) eq 'HASH') {
+                    $resulttext .= '<li><b>'.$confhash{$itemid}{'consumer'}.'</b><ul>';
                     my $position = $pos + 1;
                     $resulttext .= '<li>'.&mt('Order: [_1]',$position).'</li>';
-                    foreach my $item ('version','msgtype','sigmethod','url','lifetime') {
+                    foreach my $item ('version','lifetime') {
                         if ($confhash{$itemid}{$item} ne '') {
                             $resulttext .= '<li>'.$lt{$item}.':&nbsp;'.$confhash{$itemid}{$item}.'</li>';
                         }
                     }
-                    if ($encconfig{$itemid}{'key'} ne '') {
-                        $resulttext .= '<li>'.$lt{'key'}.':&nbsp;'.$encconfig{$itemid}{'key'}.'</li>';
-                    }
-                    if ($encconfig{$itemid}{'secret'} ne '') {
-                        $resulttext .= '<li>'.$lt{'secret'}.':&nbsp;';
-                        my $num = length($encconfig{$itemid}{'secret'});
-                        $resulttext .= ('*'x$num).'</li>';
-                    }
-                    $resulttext .= '<li>'.&mt('Configurable in course:');
-                    my @possconfig = ('label','title','target','linktext','explanation','append');
-                    my $numconfig = 0;
-                    if (ref($confhash{$itemid}{'crsconf'}) eq 'HASH') {
-                        foreach my $item (@possconfig) {
-                            if ($confhash{$itemid}{'crsconf'}{$item}) {
-                                $numconfig ++;
-                                $resulttext .= ' "'.$lt{'crs'.$item}.'"';
-                            }
-                        }
+                    if ($ltienc{$itemid}{'key'} ne '') {
+                        $resulttext .= '<li>'.$lt{'key'}.':&nbsp;'.$ltienc{$itemid}{'key'}.'</li>';
                     }
-                    if (!$numconfig) {
-                        $resulttext .= &mt('None');
+                    if ($ltienc{$itemid}{'secret'} ne '') {
+                        $resulttext .= '<li>'.$lt{'secret'}.':&nbsp;['.&mt('not shown').']</li>';
                     }
-                    $resulttext .= '</li>';
-                    if (ref($confhash{$itemid}{'display'}) eq 'HASH') {
-                        my $displaylist;
-                        if ($confhash{$itemid}{'display'}{'target'}) {
-                            $displaylist = &mt('Display target').':&nbsp;'.
-                                           $confhash{$itemid}{'display'}{'target'}.',';
+                    if ($confhash{$itemid}{'requser'}) {
+                        if ($confhash{$itemid}{'callback'}) {
+                            $resulttext .= '<li>'.&mt('Callback setting').': '.$confhash{$itemid}{'callback'}.'</li>';
+                        } else {
+                            $resulttext .= '<li>'.&mt('Callback to logout LON-CAPA on log out from Consumer').'</li>';
                         }
-                        foreach my $size ('width','height') {
-                            if ($confhash{$itemid}{'display'}{$size}) {
-                                $displaylist .= ('&nbsp;'x2).$lt{$size}.':&nbsp;'.
-                                                $confhash{$itemid}{'display'}{$size}.',';
+                        if ($confhash{$itemid}{'mapuser'}) {
+                            my $shownmapuser;
+                            if ($confhash{$itemid}{'mapuser'} eq 'lis_person_sourcedid') {
+                                $shownmapuser = $lt{'sourcedid'}.' (lis_person_sourcedid)';
+                            } elsif ($confhash{$itemid}{'mapuser'} eq 'lis_person_contact_email_primary') {
+                                $shownmapuser = $lt{'email'}.' (lis_person_contact_email_primary)';
+                            } else {
+                                $shownmapuser = &mt('Other').' ('.$confhash{$itemid}{'mapuser'}.')';
                             }
+                            $resulttext .= '<li>'.&mt('LON-CAPA username').': '.$shownmapuser.'</li>';
                         }
-                        if ($displaylist) {
-                            $displaylist =~ s/,$//;
-                            $resulttext .= '<li>'.$displaylist.'</li>';
+                        if (ref($confhash{$itemid}{'makeuser'}) eq 'ARRAY') {
+                            if (@{$confhash{$itemid}{'makeuser'}} > 0) {
+                                $resulttext .= '<li>'.&mt('Following roles may create user accounts: [_1]',
+                                                          join(', ',@{$confhash{$itemid}{'makeuser'}})).'<br />';
+                                if ($confhash{$itemid}{'lcauth'} eq 'lti') {
+                                    $resulttext .= &mt('New users will only be able to authenticate via LTI').'</li>';
+                                } else {
+                                    $resulttext .= &mt('New users will be assigned LON-CAPA authentication: [_1]',
+                                                       $confhash{$itemid}{'lcauth'});
+                                    if ($confhash{$itemid}{'lcauth'} eq 'internal') {
+                                        $resulttext .= '; '.&mt('a randomly generated password will be created');
+                                    } elsif ($confhash{$itemid}{'lcauth'} eq 'localauth') {
+                                        if ($confhash{$itemid}{'lcauthparm'} ne '') {
+                                            $resulttext .= ' '.&mt('with argument: [_1]',$confhash{$itemid}{'lcauthparm'});
+                                        }
+                                    } else {
+                                        $resulttext .= '; '.&mt('Kerberos domain: [_1]',$confhash{$itemid}{'lcauthparm'});
+                                    }
+                                }
+                                $resulttext .= '</li>';
+                            } else {
+                                $resulttext .= '<li>'.&mt('User account creation not permitted.').'</li>';
+                            }
                         }
-                        foreach my $item ('linktext','explanation') {
-                            if ($confhash{$itemid}{'display'}{$item}) {
-                                $resulttext .= '<li>'.$lt{$item}.':&nbsp;'.$confhash{$itemid}{'display'}{$item}.'</li>';
+                        if (ref($confhash{$itemid}{'instdata'}) eq 'ARRAY') {
+                            if (@{$confhash{$itemid}{'instdata'}} > 0) {
+                                $resulttext .= '<li>'.&mt('Institutional data will be used when creating a new user for: [_1]',
+                                                          join(', ',map { $fieldtitles{$_}; } @{$confhash{$itemid}{'instdata'}})).'</li>';
+                            } else {
+                                $resulttext .= '<li>'.&mt('No institutional data used when creating a new user.').'</li>';
                             }
                         }
-                    }
-                    if (ref($confhash{$itemid}{'fields'}) eq 'HASH') {
-                        my $fieldlist;
-                        foreach my $field (@allfields) {
-                            if ($confhash{$itemid}{'fields'}{$field}) {
-                                $fieldlist .= ('&nbsp;'x2).$lt{$field}.',';
+                        foreach my $item ('topmenu','inlinemenu') {
+                            $resulttext .= '<li>'.$lt{$item}.':&nbsp;';
+                            if ($confhash{$itemid}{$item}) {
+                                $resulttext .= &mt('Yes');
+                            } else {
+                                $resulttext .= &mt('No');
+                            }
+                            $resulttext .= '</li>';
+                        }
+                        if (ref($confhash{$itemid}{'lcmenu'}) eq 'ARRAY') {
+                            if (@{$confhash{$itemid}{'lcmenu'}} > 0) {
+                                $resulttext .= '<li>'.&mt('Menu items:').' '.
+                                               join(', ', map { $menutitles{$_}; } (@{$confhash{$itemid}{'lcmenu'}})).'</li>';
+                            } else {
+                                $resulttext .= '<li>'.&mt('No menu items displayed in header or online menu').'</li>';
                             }
                         }
-                        if ($fieldlist) {
-                            $fieldlist =~ s/,$//;
-                            if ($confhash{$itemid}{'fields'}{'user'}) {
-                                if ($confhash{$itemid}{'incdom'}) {
-                                    $fieldlist .= ' ('.&mt('username:domain').')';
+                        if ($confhash{$itemid}{'crsinc'}) {
+                            if (ref($confhash{$itemid}{'maproles'}) eq 'HASH') {
+                                my $rolemaps;
+                                foreach my $role (@ltiroles) {
+                                    if ($confhash{$itemid}{'maproles'}{$role}) {
+                                        $rolemaps .= ('&nbsp;'x2).$role.'='.
+                                                     &Apache::lonnet::plaintext($confhash{$itemid}{'maproles'}{$role},
+                                                                                'Course').',';
+                                    }
+                                }
+                                if ($rolemaps) {
+                                    $rolemaps =~ s/,$//;
+                                    $resulttext .= '<li>'.&mt('Role mapping:').$rolemaps.'</li>';
+                                }
+                            }
+                            if ($confhash{$itemid}{'mapcrs'}) {
+                                $resulttext .= '<li>'.&mt('Unique course identifier').': '.$confhash{$itemid}{'mapcrs'}.'</li>';
+                            }
+                            if (ref($confhash{$itemid}{'mapcrstype'}) eq 'ARRAY') {
+                                if (@{$confhash{$itemid}{'mapcrstype'}} > 0) {
+                                    $resulttext .= '<li>'.&mt('Mapping for the following LON-CAPA course types: [_1]',
+                                                   join(', ',map { $coursetypetitles{$_}; } @coursetypes)).
+                                                   '</li>';
                                 } else {
-                                    $fieldlist .= ' ('.&mt('username').')';
+                                    $resulttext .= '<li>'.&mt('No mapping to LON-CAPA courses').'</li>';
                                 }
                             }
-                            $resulttext .= '<li>'.&mt('Data sent').':'.$fieldlist.'</li>';
-                        }
-                    }
-                    if (ref($confhash{$itemid}{'roles'}) eq 'HASH') {
-                        my $rolemaps;
-                        foreach my $role (@courseroles) {
-                            if ($confhash{$itemid}{'roles'}{$role}) {
-                                $rolemaps .= ('&nbsp;'x2).&Apache::lonnet::plaintext($role,'Course').'='.
-                                             $confhash{$itemid}{'roles'}{$role}.',';
+                            if ($confhash{$itemid}{'storecrs'}) {
+                                $resulttext .= '<li>'.&mt('Store mapping of course identifier to LON-CAPA CourseID').': '.$confhash{$itemid}{'storecrs'}.'</li>';
                             }
-                        }
-                        if ($rolemaps) {
-                            $rolemaps =~ s/,$//;
-                            $resulttext .= '<li>'.&mt('Role mapping:').$rolemaps.'</li>';
-                        }
-                    }
-                    if (ref($confhash{$itemid}{'custom'}) eq 'HASH') {
-                        my $customlist;
-                        if (keys(%{$confhash{$itemid}{'custom'}})) {
-                            foreach my $key (sort(keys(%{$confhash{$itemid}{'custom'}}))) {
-                                $customlist .= $key.':'.$confhash{$itemid}{'custom'}{$key}.('&nbsp;'x2);
+                            if ($confhash{$itemid}{'makecrs'}) {
+                                $resulttext .= '<li>'.&mt('Instructor may create course (if absent).').'</li>';
+                            } else {
+                                $resulttext .= '<li>'.&mt('Instructor may not create course (if absent).').'</li>';
+                            }
+                            if (ref($confhash{$itemid}{'selfenroll'}) eq 'ARRAY') {
+                                if (@{$confhash{$itemid}{'selfenroll'}} > 0) {
+                                    $resulttext .= '<li>'.&mt('Self-enrollment for following roles: [_1]',
+                                                              join(', ',@{$confhash{$itemid}{'selfenroll'}})).
+                                                   '</li>';
+                                } else {
+                                    $resulttext .= '<li>'.&mt('Self-enrollment not permitted').'</li>';
+                                }
+                            }
+                            if ($confhash{$itemid}{'section'}) {
+                                if ($confhash{$itemid}{'section'} eq 'course_section_sourcedid') {
+                                    $resulttext .= '<li>'.&mt('User section from standard field:').
+                                                         ' (course_section_sourcedid)'.'</li>';
+                                } else {
+                                    $resulttext .= '<li>'.&mt('User section from:').' '.
+                                                          $confhash{$itemid}{'section'}.'</li>';
+                                }
+                            } else {
+                                $resulttext .= '<li>'.&mt('No section assignment').'</li>';
+                            }
+                            foreach my $item ('passback','roster','topmenu','inlinemenu') {
+                                $resulttext .= '<li>'.$lt{$item}.':&nbsp;';
+                                if ($confhash{$itemid}{$item}) {
+                                    $resulttext .= &mt('Yes');
+                                    if ($item eq 'passback') {
+                                        if ($confhash{$itemid}{'passbackformat'} eq '1.0') {
+                                            $resulttext .= '&nbsp;('.&mt('Outcomes Extension (1.0)').')';
+                                        } elsif ($confhash{$itemid}{'passbackformat'} eq '1.1') {
+                                            $resulttext .= '&nbsp;('.&mt('Outcomes Service (1.1)').')';
+                                        }
+                                    }
+                                } else {
+                                    $resulttext .= &mt('No');
+                                }
+                                $resulttext .= '</li>';
+                            }
+                            if (ref($confhash{$itemid}{'lcmenu'}) eq 'ARRAY') {
+                                if (@{$confhash{$itemid}{'lcmenu'}} > 0) {
+                                    $resulttext .= '<li>'.&mt('Menu items:').' '.
+                                                   join(', ', map { $menutitles{$_}; } (@{$confhash{$itemid}{'lcmenu'}})).'</li>';
+                                } else {
+                                    $resulttext .= '<li>'.&mt('No menu items displayed in header or online menu').'</li>';
+                                }
                             }
-                        }
-                        if ($customlist) {
-                            $resulttext .= '<li>'.&mt('Custom items').': '.$customlist.'</li>';
                         }
                     }
                     $resulttext .= '</ul></li>';
                 }
             }
-            $resulttext .= '</ul>';
-        } else {
-            $resulttext = &mt('No changes made.');
+            if (keys(%deletions)) {
+                foreach my $itemid (sort { $a <=> $b } keys(%deletions)) {
+                    $resulttext .= '<li>'.&mt('Deleted: [_1]',$changes{$itemid}).'</li>';
+                }
+            }
+        }
+        $resulttext .= '</ul>';
+        if (ref($lastactref) eq 'HASH') {
+            if (($secchanges{'encrypt'}) || ($secchanges{'private'})) {
+                $lastactref->{'domdefaults'} = 1;
+            }
         }
     } else {
         $errors .= '<li><span class="LC_error">'.&mt('Failed to save changes').'</span></li>';
@@ -13000,57 +13955,48 @@ sub modify_ltitools {
     return $resulttext;
 }
 
-sub process_ltitools_image {
-    my ($r,$dom,$confname,$caller,$itemid,$configuserok,$switchserver,$author_ok) = @_;
-    my $filename = $env{'form.'.$caller.'.filename'};
-    my ($error,$url);
-    my ($width,$height) = (21,21);
-    if ($configuserok eq 'ok') {
-        if ($switchserver) {
-            $error = &mt('Upload of Tool Provider (LTI) icon is not permitted to this server: [_1]',
-                         $switchserver);
-        } elsif ($author_ok eq 'ok') {
-            my ($result,$imageurl,$madethumb) =
-                &publishlogo($r,'upload',$caller,$dom,$confname,
-                             "ltitools/$itemid/icon",$width,$height);
-            if ($result eq 'ok') {
-                if ($madethumb) {
-                    my ($path,$imagefile) = ($imageurl =~ m{^(.+)/([^/]+)$});
-                    my $imagethumb = "$path/tn-".$imagefile;
-                    $url = $imagethumb;
-                } else {
-                    $url = $imageurl;
-                }
-            } else {
-                $error = &mt("Upload of [_1] failed because an error occurred publishing the file in RES space. Error was: [_2].",$filename,$result);
+sub get_priv_creds {
+    my ($dom,$home,$encchg,$encrypt,$storedsec) = @_;
+    my ($needenc,$cipher,$privnum);
+    my %domdefs = &Apache::lonnet::get_domain_defaults($dom);
+    if (($encchg) && (ref($encrypt) eq 'HASH')) {
+        $needenc = $encrypt->{'consumers'}
+    } else {
+        $needenc = $domdefs{'ltienc_consumers'};
+    }
+    if ($needenc) {
+        if (($storedsec eq 'ok') || ((ref($domdefs{'ltiprivhosts'}) eq 'ARRAY') &&
+                                     (grep(/^\Q$home\E$/,@{$domdefs{'ltiprivhosts'}})))) {
+                        my %privhash  = &Apache::lonnet::restore_dom('lti','private',$dom,$home,1);
+            my $privkey = $privhash{'key'};
+            $privnum = $privhash{'version'};
+            if (($privnum) && ($privkey ne '')) {
+                $cipher = Crypt::CBC->new({'key'     => $privkey,
+                                          'cipher'  => 'DES'});
             }
-        } else {
-            $error = &mt("Upload of [_1] failed because an author role could not be assigned to a Domain Configuration user ([_2]) in domain: [_3].  Error was: [_4].",$filename,$confname,$dom,$author_ok);
         }
-    } else {
-        $error = &mt("Upload of [_1] failed because a Domain Configuration user ([_2]) could not be created in domain: [_3].  Error was: [_4].",$filename,$confname,$dom,$configuserok);
     }
-    return ($url,$error);
+    return ($cipher,$privnum);
 }
 
-sub get_ltitools_id {
-    my ($cdom,$title) = @_;
-    # get lock on ltitools db
+sub get_lti_id {
+    my ($domain,$consumer) = @_;
+    # get lock on lti db
     my $lockhash = {
                       lock => $env{'user.name'}.
                               ':'.$env{'user.domain'},
                    };
     my $tries = 0;
-    my $gotlock = &Apache::lonnet::newput_dom('ltitools',$lockhash,$cdom);
+    my $gotlock = &Apache::lonnet::newput_dom('lti',$lockhash,$domain);
     my ($id,$error);
 
     while (($gotlock ne 'ok') && ($tries<10)) {
         $tries ++;
         sleep (0.1);
-        $gotlock = &Apache::lonnet::newput_dom('ltitools',$lockhash,$cdom);
+        $gotlock = &Apache::lonnet::newput_dom('lti',$lockhash,$domain);
     }
     if ($gotlock eq 'ok') {
-        my %currids = &Apache::lonnet::dump_dom('ltitools',$cdom);
+        my %currids = &Apache::lonnet::dump_dom('lti',$domain);
         if ($currids{'lock'}) {
             delete($currids{'lock'});
             if (keys(%currids)) {
@@ -13062,269 +14008,20 @@ sub get_ltitools_id {
                 $id = 1;
             }
             if ($id) {
-                unless (&Apache::lonnet::newput_dom('ltitools',{ $id => $title },$cdom) eq 'ok') {
+                unless (&Apache::lonnet::newput_dom('lti',{ $id => $consumer },$domain) eq 'ok') {
                     $error = 'nostore';
                 }
             } else {
                 $error = 'nonumber';
             }
         }
-        my $dellockoutcome = &Apache::lonnet::del_dom('ltitools',['lock'],$cdom);
+        my $dellockoutcome = &Apache::lonnet::del_dom('lti',['lock'],$domain);
     } else {
         $error = 'nolock';
     }
     return ($id,$error);
 }
 
-sub modify_lti {
-    my ($r,$dom,$action,$lastactref,%domconfig) = @_;
-    my %domdefaults = &Apache::lonnet::get_domain_defaults($dom,1);
-    my (%encconfig,$errors,$resulttext);
-
-    my (%currltisec,%secchanges,%newltisec,%newltienc,%keyset,%newkeyset);
-    $newltisec{'private'}{'keys'} = [];
-    $newltisec{'encrypt'} = {};
-    $newltisec{'rules'} = {};
-    $newltisec{'linkprot'} = {};
-    if (ref($domconfig{'ltisec'}) eq 'HASH') {
-        %currltisec = %{$domconfig{'ltisec'}};
-        if (ref($currltisec{'linkprot'}) eq 'HASH') {
-            foreach my $id (keys(%{$currltisec{'linkprot'}})) {
-                unless ($id =~ /^\d+$/) {
-                    delete($currltisec{'linkprot'}{$id});
-                }
-            }
-        }
-        if (ref($currltisec{'private'}) eq 'HASH') {
-            if (ref($currltisec{'private'}{'keys'}) eq 'ARRAY') {
-                $newltisec{'private'}{'keys'} = $currltisec{'private'}{'keys'};
-                map { $keyset{$_} = 1; } @{$currltisec{'private'}{'keys'}};
-            }
-        }
-    }
-    foreach my $item ('crs','dom') {
-        my $formelement = 'form.ltisec_'.$item.'linkprot';
-        if ($env{$formelement}) {
-            $newltisec{'encrypt'}{$item} = 1;
-            if (ref($currltisec{'encrypt'}) eq 'HASH') {
-                unless ($currltisec{'encrypt'}{$item}) {
-                    $secchanges{'encrypt'} = 1;
-                }
-            } else {
-                $secchanges{'encrypt'} = 1;
-            }
-        } elsif (ref($currltisec{'encrypt'}) eq 'HASH') {
-            if ($currltisec{'encrypt'}{$item}) {
-                $secchanges{'encrypt'} = 1;
-            }
-        }
-    }
-    unless (exists($currltisec{'rules'})) {
-        $currltisec{'rules'} = {};
-    }
-    &password_rule_changes('secrets',$newltisec{'rules'},$currltisec{'rules'},\%secchanges);
-
-    my @ids=&Apache::lonnet::current_machine_ids();
-    my %servers = &Apache::lonnet::get_servers($dom,'library');
-
-    foreach my $hostid (keys(%servers)) {
-        if (($hostid ne '') && (grep(/^\Q$hostid\E$/,@ids))) {
-            my $newkey;
-            my $keyitem = 'form.ltisec_privkey_'.$hostid;
-            if (exists($env{$keyitem})) {
-                $env{$keyitem} =~ s/(`)/'/g;
-                if ($keyset{$hostid}) {
-                    if ($env{'form.ltisec_changeprivkey_'.$hostid}) {
-                        if ($env{$keyitem} ne '') {
-                            $secchanges{'private'} = 1;
-                            $newkeyset{$hostid} = $env{$keyitem};
-                        }
-                    }
-                } elsif ($env{$keyitem} ne '') {
-                    unless (grep(/^\Q$hostid\E$/,@{$newltisec{'private'}{'keys'}})) {
-                        push(@{$newltisec{'private'}{'keys'}},$hostid);
-                    }
-                    $secchanges{'private'} = 1;
-                    $newkeyset{$hostid} = $env{$keyitem};
-                }
-            }
-        }
-    }
-
-    my (%linkprotchg,$linkprotoutput,$is_home);
-    my $proterror = &Apache::courseprefs::process_linkprot($dom,'',$currltisec{'linkprot'},
-                                                           \%linkprotchg,'domain');
-    my $home = &Apache::lonnet::domain($dom,'primary');
-    unless (($home eq 'no_host') || ($home eq '')) {
-        my @ids=&Apache::lonnet::current_machine_ids();
-        foreach my $id (@ids) { if ($id eq $home) { $is_home=1; } }
-    }
-
-    if (keys(%linkprotchg)) {
-        $secchanges{'linkprot'} = 1;
-        my %oldlinkprot;
-        if (ref($currltisec{'linkprot'}) eq 'HASH') {
-            %oldlinkprot = %{$currltisec{'linkprot'}};
-        }
-        foreach my $id (keys(%linkprotchg)) {
-            if (ref($linkprotchg{$id}) eq 'HASH') {
-                foreach my $inner (keys(%{$linkprotchg{$id}})) {
-                    if (($inner eq 'secret') || ($inner eq 'key')) {
-                        if ($is_home) {
-                            $newltienc{$id}{$inner} = $linkprotchg{$id}{$inner};
-                        }
-                    }
-                }
-            } else {
-                $newltisec{'linkprot'}{$id} = $linkprotchg{$id};
-            }
-        }
-        $linkprotoutput = &Apache::courseprefs::store_linkprot($dom,'','domain',\%linkprotchg,\%oldlinkprot);
-        if (keys(%linkprotchg)) {
-            %{$newltisec{'linkprot'}} = %linkprotchg;
-        }
-    }
-    if (ref($currltisec{'linkprot'}) eq 'HASH') {
-        foreach my $id (%{$currltisec{'linkprot'}}) {
-            next if ($id !~ /^\d+$/);
-            unless (exists($linkprotchg{$id})) {
-                if (ref($currltisec{'linkprot'}{$id}) eq 'HASH') {
-                    foreach my $inner (keys(%{$currltisec{'linkprot'}{$id}})) {
-                        if (($inner eq 'secret') || ($inner eq 'key')) {
-                            if ($is_home) {
-                                $newltienc{$id}{$inner} = $currltisec{'linkprot'}{$id}{$inner};
-                            }
-                        } else {
-                            $newltisec{'linkprot'}{$id}{$inner} = $currltisec{'linkprot'}{$id}{$inner};
-                        }
-                    }
-                } else {
-                    $newltisec{'linkprot'}{$id} = $currltisec{'linkprot'}{$id};
-                }
-            }
-        }
-    }
-    if ($proterror) {
-        $errors .= '<li>'.$proterror.'</li>';
-    }
-
-    my ($putresult,%keystore);
-    if (keys(%secchanges)) {
-        my %ltienchash;
-        my %ltihash = (
-                          'ltisec' => { %newltisec }
-                      );
-        $putresult = &Apache::lonnet::put_dom('configuration',\%ltihash,$dom);
-        if ($putresult eq 'ok') {
-            if ($secchanges{'private'}) {
-                my $who = &escape($env{'user.name'}.':'.$env{'user.domain'});
-                foreach my $hostid (keys(%newkeyset)) {
-                    my $storehash = {
-                                       key => $newkeyset{$hostid},
-                                       who => $env{'user.name'}.':'.$env{'user.domain'},
-                                    };
-                    $keystore{$hostid} = &Apache::lonnet::store_dom($storehash,'lti','private',
-                                                                    $dom,$hostid);
-                }
-            }
-            if (ref($lastactref) eq 'HASH') {
-                if (($secchanges{'encrypt'}) || ($secchanges{'private'})) {
-                    $lastactref->{'domdefaults'} = 1;
-                }
-            }
-            if (($secchanges{'linkprot'}) && ($is_home)) {
-                my %ltienchash = (
-                                     'linkprot' =>  { %newltienc }
-                                 );
-                &Apache::lonnet::put_dom('encconfig',\%ltienchash,$dom,undef,1);
-            }
-        }
-    } else {
-        return &mt('No changes made.');
-    }
-    if ($putresult eq 'ok') {
-        $resulttext = &mt('Changes made:').'<ul>';
-        foreach my $item (keys(%secchanges)) {
-            if ($item eq 'encrypt') {
-                my %encrypted = (
-                          crs  => {
-                                    on => &mt('Encryption of stored link protection secrets defined in courses enabled'),
-                                    off => &mt('Encryption of stored link protection secrets defined in courses disabled'),
-                                  },
-                          dom => {
-                                   on => &mt('Encryption of stored link protection secrets defined in domain enabled'),
-                                   off => &mt('Encryption of stored link protection secrets defined in domain disabled'),
-                                 },
-                );
-                foreach my $type ('crs','dom') {
-                    my $shown = $encrypted{$type}{'off'};
-                    if (ref($newltisec{$item}) eq 'HASH') {
-                        if ($newltisec{$item}{$type}) {
-                            $shown = $encrypted{$type}{'on'};
-                        }
-                    }
-                    $resulttext .= '<li>'.$shown.'</li>';
-                }
-            } elsif ($item eq 'rules') {
-                my %titles = &Apache::lonlocal::texthash(
-                                  min   => 'Minimum password length',
-                                  max   => 'Maximum password length',
-                                  chars => 'Required characters',
-                );
-                foreach my $rule ('min','max') {
-                    if ($newltisec{rules}{$rule} eq '') {
-                        if ($rule eq 'min') {
-                            $resulttext .= '<li>'.&mt('[_1] not set.',$titles{$rule});
-                                           ' '.&mt('Default of [_1] will be used',
-                                                       $Apache::lonnet::passwdmin).'</li>';
-                        } else {
-                            $resulttext .= '<li>'.&mt('[_1] set to none',$titles{$rule}).'</li>';
-                        }
-                    } else {
-                        $resulttext .= '<li>'.&mt('[_1] set to [_2]',$titles{$rule},$newltisec{rules}{$rule}).'</li>';
-                    }
-                }
-                if (ref($newltisec{'rules'}{'chars'}) eq 'ARRAY') {
-                    if (@{$newltisec{'rules'}{'chars'}} > 0) {
-                        my %rulenames = &Apache::lonlocal::texthash(
-                                            uc => 'At least one upper case letter',
-                                            lc => 'At least one lower case letter',
-                                            num => 'At least one number',
-                                            spec => 'At least one non-alphanumeric',
-                                            );
-                        my $needed = '<ul><li>'.
-                                     join('</li><li>',map {$rulenames{$_} } @{$newltisec{'rules'}{'chars'}}).
-                                     '</li></ul>';
-                        $resulttext .= '<li>'.&mt('[_1] set to: [_2]',$titles{'chars'},$needed).'</li>';
-                    } else {
-                        $resulttext .= '<li>'.&mt('[_1] set to none',$titles{'chars'}).'</li>';
-                    }
-                } else {
-                    $resulttext .= '<li>'.&mt('[_1] set to none',$titles{'chars'}).'</li>';
-                }
-            } elsif ($item eq 'private') {
-                if (keys(%newkeyset)) {
-                    foreach my $hostid (sort(keys(%newkeyset))) {
-                        if ($keystore{$hostid} eq 'ok') {
-                            $resulttext .= '<li>'.&mt('Encryption key for storage of shared secrets saved for [_1]',$hostid).'</li>';
-                        }
-                    }
-                }
-            } elsif ($item eq 'linkprot') {
-                $resulttext .= $linkprotoutput;
-            }
-        }
-        $resulttext .= '</ul>';
-    } else {
-        $errors .= '<li><span class="LC_error">'.&mt('Failed to save changes').'</span></li>';
-    }
-    if ($errors) {
-        $resulttext .= &mt('The following errors occurred: ').'<ul>'.
-                       $errors.'</ul>';
-    }
-    return $resulttext;
-}
-
 sub modify_autoenroll {
     my ($dom,$lastactref,%domconfig) = @_;
     my ($resulttext,%changes);
@@ -14084,7 +14781,7 @@ sub modify_contacts {
                     $contacts_hash{'contacts'}{'overrides'}{$type}{'include'} = $includeloc{$type}.':'.&escape($includestr{$type});
                     $newsetting{'override_'.$type}{'include'} = $contacts_hash{'contacts'}{'overrides'}{$type}{'include'};
                 }
-            }    
+            }
         }
     }
     if (keys(%currsetting) > 0) {
@@ -14534,7 +15231,7 @@ sub modify_contacts {
         }
     } else {
         $resulttext = '<span class="LC_error">'.
-            &mt('An error occurred: [_1].',$putresult).'</span>';
+            &mt('An error occurred: [_1]',$putresult).'</span>';
     }
     return $resulttext;
 }
@@ -14706,7 +15403,6 @@ sub modify_passwords {
     }
     if ($env{'form.passwords_customfile.filename'} ne '') {
         my $servadm = $r->dir_config('lonAdmEMail');
-        my $servadm = $r->dir_config('lonAdmEMail');
         my ($configuserok,$author_ok,$switchserver) =
             &config_check($dom,$confname,$servadm);
         my $error;
@@ -14715,12 +15411,15 @@ sub modify_passwords {
                 $error = &mt("Upload of file containing domain-specific text is not permitted to this server: [_1]",$switchserver);
             } else {
                 if ($author_ok eq 'ok') {
+                    my $modified = [];
                     my ($result,$customurl) =
-                        &publishlogo($r,'upload','passwords_customfile',$dom,
-                                     $confname,'customtext/resetpw','','',$customfn);
+                        &Apache::lonconfigsettings::publishlogo($r,'upload','passwords_customfile',$dom,
+                                                                $confname,'customtext/resetpw','','',$customfn,
+                                                                $modified);
                     if ($result eq 'ok') {
                         $newvalues{'resetcustom'} = $customurl;
                         $changes{'reset'} = 1;
+                        &update_modify_urls($r,$modified);
                     } else {
                         $error = &mt("Upload of [_1] failed because an error occurred publishing the file in RES space. Error was: [_2].",$customfn,$result);
                     }
@@ -15041,7 +15740,7 @@ sub password_rule_changes {
     my (@rules,%staticdefaults);
     if ($prefix eq 'passwords') {
         @rules = ('min','max','numsaved');
-    } elsif ($prefix eq 'secrets') {
+    } elsif (($prefix eq 'ltisecrets') || ($prefix eq 'toolsecrets')) {
         @rules = ('min','max');
     }
     $staticdefaults{'min'} = $Apache::lonnet::passwdmin;
@@ -15182,7 +15881,7 @@ sub modify_usercreation {
     }
 
     my @authen_contexts = ('author','course','domain');
-    my @authtypes = ('int','krb4','krb5','loc');
+    my @authtypes = ('int','krb4','krb5','loc','lti');
     my %authhash;
     foreach my $item (@authen_contexts) {
         my @authallowed =  &Apache::loncommon::get_env_multiple('form.'.$item.'_auth');
@@ -15397,7 +16096,6 @@ sub modify_selfcreation {
 # Populate $cancreate{'selfcreate'} array reference with types of user, for which self-creation of user accounts
 # is permitted.
 #
-
     my ($emailrules,$emailruleorder) = &Apache::lonnet::inst_userrules($dom,'email');
 
     my (@statuses,%email_rule);
@@ -16375,7 +17073,7 @@ sub modify_defaults {
     my %domdefaults = &Apache::lonnet::get_domain_defaults($dom,1);
     my @items = ('auth_def','auth_arg_def','lang_def','timezone_def','datelocale_def',
                  'portal_def');
-    my @authtypes = ('internal','krb4','krb5','localauth');
+    my @authtypes = ('internal','krb4','krb5','localauth','lti');
     foreach my $item (@items) {
         $newvalues{$item} = $env{'form.'.$item};
         if ($item eq 'auth_def') {
@@ -16644,8 +17342,8 @@ sub modify_defaults {
                                                      '<ul><li>'.join('</li><li>',@rulenames).'</li></ul>').
                                            '</li>';
                         } else {
-                            $resulttext .= '<li>'.&mt('No mapping for missing usernames via standard log-in').'</li>'; 
-                        } 
+                            $resulttext .= '<li>'.&mt('No mapping for missing usernames via standard log-in').'</li>';
+                        }
                     } else {
                         $resulttext .= '<li>'.&mt('Mapping for missing usernames via standard log-in deleted').'</li>';
                     }
@@ -16660,6 +17358,7 @@ sub modify_defaults {
                                           krb4       => 'krb4',
                                           krb5       => 'krb5',
                                           localauth  => 'loc',
+                                          lti        => 'lti',
                         );
                         $value = $authnames{$shortauth{$value}};
                     }
@@ -16732,12 +17431,15 @@ sub modify_scantron {
                 $error = &mt("Upload of bubblesheet format file is not permitted to this server: [_1]",$switchserver);
             } else {
                 if ($author_ok eq 'ok') {
+                    my $modified = [];
                     my ($result,$scantronurl) =
-                        &publishlogo($r,'upload','scantronformat',$dom,
-                                     $confname,'scantron','','',$custom);
+                        &Apache::lonconfigsettings::publishlogo($r,'upload','scantronformat',$dom,
+                                                                $confname,'scantron','','',$custom,
+                                                                $modified);
                     if ($result eq 'ok') {
                         $confhash{'scantron'}{'scantronformat'} = $scantronurl;
                         $changes{'scantronformat'} = 1;
+                        &update_modify_urls($r,$modified);
                     } else {
                         $error = &mt("Upload of [_1] failed because an error occurred publishing the file in RES space. Error was: [_2].",$custom,$result);
                     }
@@ -16889,8 +17591,8 @@ sub modify_scantron {
         $resulttext = &mt('No changes made to bubblesheet format settings');
     }
     if ($errors) {
-        $resulttext .= &mt('The following errors occurred: ').'<ul>'.
-                       $errors.'</ul>';
+        $resulttext .= '<p>'.&mt('The following errors occurred: ').'<ul>'.
+                       $errors.'</ul></p>';
     }
     return $resulttext;
 }
@@ -17633,6 +18335,7 @@ sub modify_coursedefaults {
                            uploadquota          => 500,
                            postsubmit           => 60,
                            mysqltables          => 172800,
+                           domexttool           => 1,
                          );
     my %texoptions = (
                         MathJax  => 'MathJax',
@@ -17824,6 +18527,47 @@ sub modify_coursedefaults {
                 $changes{'postsubmit'} = 1;
             }
         }
+        my (%newdomexttool,%newexttool,%olddomexttool,%oldexttool);
+        map { $newdomexttool{$_} = 1; } &Apache::loncommon::get_env_multiple('form.domexttool');
+        map { $newexttool{$_} = 1; } &Apache::loncommon::get_env_multiple('form.exttool');
+        if (ref($domconfig{'coursedefaults'}{'domexttool'}) eq 'HASH') {
+            %olddomexttool = %{$domconfig{'coursedefaults'}{'domexttool'}};
+        } else {
+           foreach my $type (@types) {
+               if ($staticdefaults{'domexttool'}) {
+                   $olddomexttool{$type} = 1;
+               } else {
+                   $olddomexttool{$type} = 0;
+               }
+            }
+        }
+        if (ref($domconfig{'coursedefaults'}{'exttool'}) eq 'HASH') {
+            %oldexttool = %{$domconfig{'coursedefaults'}{'exttool'}};
+        } else {
+            foreach my $type (@types) {
+               if ($staticdefaults{'exttool'}) {
+                   $oldexttool{$type} = 1;
+               } else {
+                   $oldexttool{$type} = 0;
+               }
+            }
+        }
+        foreach my $type (@types) {
+            unless ($newdomexttool{$type}) {
+                $newdomexttool{$type} = 0;
+            }
+            unless ($newexttool{$type}) {
+                $newexttool{$type} = 0;
+            }
+            if ($newdomexttool{$type} != $olddomexttool{$type}) {
+                $changes{'domexttool'} = 1;
+            }
+            if ($newexttool{$type} != $oldexttool{$type}) {
+                $changes{'exttool'} = 1;
+            }
+        }
+        $defaultshash{'coursedefaults'}{'domexttool'} = \%newdomexttool;
+        $defaultshash{'coursedefaults'}{'exttool'} = \%newexttool;
     }
     my $putresult = &Apache::lonnet::put_dom('configuration',\%defaultshash,
                                              $dom);
@@ -17833,7 +18577,8 @@ sub modify_coursedefaults {
             if (($changes{'uploadquota'}) || ($changes{'postsubmit'}) ||
                 ($changes{'coursecredits'}) || ($changes{'uselcmath'}) || ($changes{'usejsme'}) ||
                 ($changes{'canclone'}) || ($changes{'mysqltables'}) || ($changes{'texengine'}) ||
-                ($changes{'inline_chem'}) || ($changes{'ltiauth'})) {
+                ($changes{'inline_chem'}) || ($changes{'ltiauth'}) || ($changes{'domexttool'}) ||
+                ($changes{'exttool'})) {
                 foreach my $item ('uselcmath','usejsme','inline_chem','texengine','ltiauth') {
                     if ($changes{$item}) {
                         $domdefaults{$item}=$defaultshash{'coursedefaults'}{$item};
@@ -17877,6 +18622,20 @@ sub modify_coursedefaults {
                         $domdefaults{'canclone'}=$defaultshash{'coursedefaults'}{'canclone'};
                     }
                 }
+                if ($changes{'domexttool'}) {
+                    if (ref($defaultshash{'coursedefaults'}{'domexttool'}) eq 'HASH') {
+                        foreach my $type (@types) {
+                            $domdefaults{$type.'domexttool'}=$defaultshash{'coursedefaults'}{'domexttool'}{$type};
+                        }
+                    }
+                }
+                if ($changes{'exttool'}) {
+                    if (ref($defaultshash{'coursedefaults'}{'exttool'}) eq 'HASH') {
+                        foreach my $type (@types) {
+                            $domdefaults{$type.'exttool'}=$defaultshash{'coursedefaults'}{'exttool'}{$type};
+                        }
+                    }
+                }
                 my $cachetime = 24*60*60;
                 &Apache::lonnet::do_cache_new('domdefaults',$dom,\%domdefaults,$cachetime);
                 if (ref($lastactref) eq 'HASH') {
@@ -17916,7 +18675,6 @@ sub modify_coursedefaults {
                                        '<li>'.&mt('Official courses: [_1] MB','<b>'.$defaultshash{'coursedefaults'}{'uploadquota'}{'official'}.'</b>').'</li>'.
                                        '<li>'.&mt('Unofficial courses: [_1] MB','<b>'.$defaultshash{'coursedefaults'}{'uploadquota'}{'unofficial'}.'</b>').'</li>'.
                                        '<li>'.&mt('Textbook courses: [_1] MB','<b>'.$defaultshash{'coursedefaults'}{'uploadquota'}{'textbook'}.'</b>').'</li>'.
-
                                        '<li>'.&mt('Communities: [_1] MB','<b>'.$defaultshash{'coursedefaults'}{'uploadquota'}{'community'}.'</b>').'</li>'.
                                        '</ul>'.
                                        '</li>';
@@ -18005,6 +18763,34 @@ sub modify_coursedefaults {
                     } else {
                         $resulttext .= '<li>'.&mt('LTI launch of deep-linked URL will require re-authentication').'</li>';
                     }
+                } elsif ($item eq 'domexttool') {
+                    my @noyes = (&mt('no'),&mt('yes'));
+                    if (ref($defaultshash{'coursedefaults'}{'domexttool'}) eq 'HASH') {
+                        $resulttext .= '<li>'.&mt('External Tools defined in the domain may be used as follows:').'<ul>'.
+                                       '<li>'.&mt('Official courses: [_1]','<b>'.$noyes[$defaultshash{'coursedefaults'}{'domexttool'}{'official'}].'</b>').'</li>'.
+                                       '<li>'.&mt('Unofficial courses: [_1]','<b>'.$noyes[$defaultshash{'coursedefaults'}{'domexttool'}{'unofficial'}].'</b>').'</li>'.
+                                       '<li>'.&mt('Textbook courses: [_1]','<b>'.$noyes[$defaultshash{'coursedefaults'}{'domexttool'}{'textbook'}].'</b>').'</li>'.
+                                       '<li>'.&mt('Placement tests: [_1]','<b>'.$noyes[$defaultshash{'coursedefaults'}{'domexttool'}{'placement'}].'</b>').'</li>'.
+                                       '<li>'.&mt('Communities: [_1]','<b>'.$noyes[$defaultshash{'coursedefaults'}{'domexttool'}{'community'}].'</b>').'</li>'.
+                                       '</ul>'.
+                                       '</li>';
+                    } else {
+                        $resulttext .= '<li>'.&mt('External Tools defined in the domain may be used in all course types, by default').'</li>';
+                    }
+                } elsif ($item eq 'exttool') {
+                    my @noyes = (&mt('no'),&mt('yes'));
+                    if (ref($defaultshash{'coursedefaults'}{'exttool'}) eq 'HASH') {
+                        $resulttext .= '<li>'.&mt('External Tools can be defined and configured in course containers as follows:').'<ul>'.
+                                       '<li>'.&mt('Official courses: [_1]','<b>'.$noyes[$defaultshash{'coursedefaults'}{'exttool'}{'official'}].'</b>').'</li>'.
+                                       '<li>'.&mt('Unofficial courses: [_1]','<b>'.$noyes[$defaultshash{'coursedefaults'}{'exttool'}{'unofficial'}].'</b>').'</li>'.
+                                       '<li>'.&mt('Textbook courses: [_1]','<b>'.$noyes[$defaultshash{'coursedefaults'}{'exttool'}{'textbook'}].'</b>').'</li>'.
+                                       '<li>'.&mt('Placement tests: [_1]','<b>'.$noyes[$defaultshash{'coursedefaults'}{'exttool'}{'placement'}].'</b>').'</li>'.
+                                       '<li>'.&mt('Communities: [_1]','<b>'.$noyes[$defaultshash{'coursedefaults'}{'exttool'}{'community'}].'</b>').'</li>'.
+                                       '</ul>'.
+                                       '</li>';
+                    } else {
+                        $resulttext .= '<li>'.&mt('External Tools can not be defined in any course types, by default').'</li>';
+                    }
                 }
             }
             $resulttext .= '</ul>';
@@ -18563,6 +19349,7 @@ sub modify_wafproxy {
                     }
                 }
             }
+            $output .= '</ul>';
         } else {
             $output = '<span class="LC_error">'.
                       &mt('An error occurred: [_1]',$putresult).'</span>';
@@ -18916,7 +19703,7 @@ sub modify_usersessions {
                                         }
                                     } else {
                                         if ($type eq 'version') {
-                                            $newvalue .= ' '.&mt('(or later)'); 
+                                            $newvalue .= ' '.&mt('(or later)');
                                         }
                                         $resulttext .= '<li>'.&mt('[_1] set to: [_2].',$lt{$type},$newvalue).'</li>';
                                     }
@@ -19799,7 +20586,7 @@ function updateNewSpares(formname,lonhos
 function checkNewSpares(lonhost,type) {
     var newSpare = document.getElementById('newspare_'+type+'_'+lonhost);
     var chosen =  newSpare.options[newSpare.selectedIndex].value;
-    if (chosen != '') { 
+    if (chosen != '') {
         var othertype;
         var othernewSpare;
         if (type == 'primary') {
@@ -19933,7 +20720,7 @@ function toggleDisplay(domForm,caller) {
         var dispval = 'block';
         var selfcreateRegExp = /^cancreate_emailverified/;
         if (caller == 'emailoptions') {
-            optionsElement = domForm.cancreate_email; 
+            optionsElement = domForm.cancreate_email;
         }
         if (caller == 'studentsubmission') {
             optionsElement = domForm.postsubmit;