--- loncom/interface/domainprefs.pm	2017/12/07 01:36:11	1.322
+++ loncom/interface/domainprefs.pm	2017/12/30 14:03:53	1.323
@@ -1,7 +1,7 @@
 # The LearningOnline Network with CAPA
 # Handler to set domain-wide configuration settings
 #
-# $Id: domainprefs.pm,v 1.322 2017/12/07 01:36:11 raeburn Exp $
+# $Id: domainprefs.pm,v 1.323 2017/12/30 14:03:53 raeburn Exp $
 #
 # Copyright Michigan State University Board of Trustees
 #
@@ -4112,7 +4112,7 @@ sub print_ltitools {
         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,$imgsrc);
+            my ($title,$key,$secret,$url,$lifetime,$imgsrc,%sigsel);
             if (ref($settings->{$item}) eq 'HASH') {
                 $title = $settings->{$item}->{'title'};
                 $url = $settings->{$item}->{'url'};
@@ -4123,6 +4123,11 @@ sub print_ltitools {
                 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">'
@@ -4140,15 +4145,19 @@ sub print_ltitools {
                 &mt('Delete?').'</label></span></td>'.
                 '<td colspan="2">'.
                 '<fieldset><legend>'.&mt('Required settings').'</legend>'.
-                '<span class="LC_nobreak">'.$lt{'title'}.':<input type="text" size="30" name="ltitools_title_'.$i.'" value="'.$title.'" /></span> '.
+                '<span class="LC_nobreak">'.$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">'.$lt{'url'}.':<input type="text" size="30" name="ltitools_url_'.$i.'"'.
+                '<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'}.':'.
@@ -4345,15 +4354,18 @@ sub print_ltitools {
                   '<input type="checkbox" name="ltitools_add" value="1" />'.&mt('Add').'</td>'."\n".
                   '<td colspan="2">'.
                   '<fieldset><legend>'.&mt('Required settings').'</legend>'.
-                  '<span class="LC_nobreak">'.$lt{'title'}.':<input type="text" size="30" name="ltitools_add_title" value="" /></span> '."\n".
+                  '<span class="LC_nobreak">'.$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="30" name="ltitools_add_url" value="" /></span> '."\n".
+                  '<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).
@@ -4457,6 +4469,7 @@ sub ltitools_names {
                                           'title'          => 'Title',
                                           'version'        => 'Version',
                                           'msgtype'        => 'Message Type',
+                                          'sigmethod'      => 'Signature Method',
                                           'url'            => 'URL',
                                           'key'            => 'Key',
                                           'lifetime'       => 'Nonce lifetime (s)',
@@ -10670,6 +10683,11 @@ sub modify_ltitools {
             if ($env{'form.ltitools_add_msgtype'} eq 'basic-lti-launch-request') {
                 $confhash{$newid}{'msgtype'} = $env{'form.ltitools_add_msgtype'};
             }
+            if ($env{'form.ltitools_add_sigmethod'} eq 'HMAC-SHA256') {
+                $confhash{$newid}{'sigmethod'} = $env{'form.ltitools_add_sigmethod'};
+            } else {
+                $confhash{$newid}{'sigmethod'} = 'HMAC-SHA1';
+            }
             foreach my $item ('width','height','linktext','explanation') {
                 $env{'form.ltitools_add_'.$item} =~ s/^\s+//;
                 $env{'form.ltitools_add_'.$item} =~ s/\s+$//;
@@ -10796,6 +10814,18 @@ sub modify_ltitools {
                     if ($env{'form.ltitools_msgtype_'.$i} eq 'basic-lti-launch-request') {
                         $confhash{$itemid}{'msgtype'} = $env{'form.ltitools_msgtype_'.$i};
                     }
+                    if ($env{'form.ltitools_sigmethod_'.$i} eq 'HMAC-SHA256') {
+                        $confhash{$itemid}{'sigmethod'} = $env{'form.ltitools_sigmethod_'.$i};
+                    } else {
+                        $confhash{$itemid}{'sigmethod'} = 'HMAC-SHA1'; 
+                    }
+                    if ($domconfig{$action}{$itemid}{'sigmethod'} eq '') {
+                        if ($confhash{$itemid}{'sigmethod'} ne 'HMAC-SHA1') {
+                            $changes{$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.'_'.$i} =~ s/\s+$//;
@@ -11042,7 +11072,7 @@ sub modify_ltitools {
                     $resulttext .= '</li><ul>';
                     my $position = $pos + 1;
                     $resulttext .= '<li>'.&mt('Order: [_1]',$position).'</li>';
-                    foreach my $item ('version','msgtype','url','lifetime') {
+                    foreach my $item ('version','msgtype','sigmethod','url','lifetime') {
                         if ($confhash{$itemid}{$item} ne '') {
                             $resulttext .= '<li>'.$lt{$item}.':&nbsp;'.$confhash{$itemid}{$item}.'</li>';
                         }