--- loncom/lonnet/perl/lonnet.pm	2022/01/03 05:07:50	1.1172.2.146
+++ loncom/lonnet/perl/lonnet.pm	2024/12/29 14:47:27	1.1172.2.152
@@ -1,7 +1,7 @@
 # The LearningOnline Network
 # TCP networking package
 #
-# $Id: lonnet.pm,v 1.1172.2.146 2022/01/03 05:07:50 raeburn Exp $
+# $Id: lonnet.pm,v 1.1172.2.152 2024/12/29 14:47:27 raeburn Exp $
 #
 # Copyright Michigan State University Board of Trustees
 #
@@ -221,7 +221,7 @@ sub get_server_distarch {
             }
         }
         my $rep = &reply('serverdistarch',$lonhost);
-        unless ($rep eq 'unknown_command' || $rep eq 'no_such_host' ||
+        unless ($rep eq 'unknown_cmd' || $rep eq 'no_such_host' ||
                 $rep eq 'con_lost' || $rep eq 'rejected' || $rep eq 'refused' ||
                 $rep eq '') {
             return &do_cache_new('serverdistarch',$lonhost,$rep,$cachetime);
@@ -1254,7 +1254,7 @@ sub changepass {
 sub queryauthenticate {
     my ($uname,$udom)=@_;
     my $uhome=&homeserver($uname,$udom);
-    if (!$uhome) {
+    if ((!$uhome) || ($uhome eq 'no_host')) {
 	&logthis("User $uname at $udom is unknown when looking for authentication mechanism");
 	return 'no_host';
     }
@@ -1303,12 +1303,35 @@ sub authenticate {
     }
     if ($answer eq 'non_authorized') {
 	&logthis("User $uname at $udom rejected by $uhome");
-	return 'no_host'; 
+	return 'no_host';
     }
     &logthis("User $uname at $udom threw error $answer when checking authentication mechanism");
     return 'no_host';
 }
 
+sub can_switchserver {
+    my ($udom,$home) = @_;
+    my ($canswitch,@intdoms);
+    my $internet_names = &get_internet_names($home);
+    if (ref($internet_names) eq 'ARRAY') {
+        @intdoms = @{$internet_names};
+    }
+    my $uint_dom = &internet_dom(&domain($udom,'primary'));
+    if ($uint_dom ne '' && grep(/^\Q$uint_dom\E$/,@intdoms)) {
+        $canswitch = 1;
+    } else {
+         my $serverhomeID = &get_server_homeID(&hostname($home));
+         my $serverhomedom = &host_domain($serverhomeID);
+         my %defdomdefaults = &get_domain_defaults($serverhomedom);
+         my %udomdefaults = &get_domain_defaults($udom);
+         my $remoterev = &get_server_loncaparev('',$home);
+         $canswitch = &can_host_session($udom,$home,$remoterev,
+                                        $udomdefaults{'remotesessions'},
+                                        $defdomdefaults{'hostedsessions'});
+    }
+    return $canswitch;
+}
+
 sub can_host_session {
     my ($udom,$lonhost,$remoterev,$remotesessions,$hostedsessions) = @_;
     my $canhost = 1;
@@ -2271,6 +2294,10 @@ sub inst_rulecheck {
                     $response=&unescape(&reply('instselfcreatecheck:'.
                                                &escape($udom).':'.&escape($uname).
                                               ':'.$rulestr,$homeserver));
+                } elsif ($item eq 'unamemap') {
+                    $response=&unescape(&reply('instunamemapcheck:'.
+                                               &escape($udom).':'.&escape($uname).
+                                              ':'.$rulestr,$homeserver));
                 }
                 if ($response ne 'refused') {
                     my @pairs=split(/\&/,$response);
@@ -2300,6 +2327,9 @@ sub inst_userrules {
             } elsif ($check eq 'email') {
                 $response=&reply('instemailrules:'.&escape($udom),
                                  $homeserver);
+            } elsif ($check eq 'unamemap') {
+                $response=&reply('unamemaprules:'.&escape($udom),
+                                 $homeserver);
             } else {
                 $response=&reply('instuserrules:'.&escape($udom),
                                  $homeserver);
@@ -2358,6 +2388,7 @@ sub get_domain_defaults {
         $domdefaults{'intauth_cost'} = $domconfig{'defaults'}{'intauth_cost'};
         $domdefaults{'intauth_switch'} = $domconfig{'defaults'}{'intauth_switch'};
         $domdefaults{'intauth_check'} = $domconfig{'defaults'}{'intauth_check'};
+        $domdefaults{'unamemap_rule'} = $domconfig{'defaults'}{'unamemap_rule'};
     } else {
         $domdefaults{'lang_def'} = &domain($domain,'lang_def');
         $domdefaults{'auth_def'} = &domain($domain,'auth_def');
@@ -2534,6 +2565,7 @@ sub get_dom_instcats {
             if (&auto_instcode_format($caller,$dom,\%coursecodes,\%codes,
                                       \@codetitles,\%cat_titles,\%cat_order) eq 'ok') {
                 $instcats = {
+                                totcodes => $totcodes,
                                 codes => \%codes,
                                 codetitles => \@codetitles,
                                 cat_titles => \%cat_titles,
@@ -3429,10 +3461,15 @@ sub can_edit_resource {
                     return;
                 }
             } elsif (!$crsedit) {
+                if ($env{'request.role'} =~ m{^st\./$cdom/$cnum}) {
 #
 # No edit allowed where CC has switched to student role.
 #
-                return;
+                    return;
+                } elsif (($resurl !~ m{^/res/$match_domain/$match_username/}) ||
+                         ($resurl =~ m{^/res/lib/templates/})) {
+                    return;
+                }
             }
         }
     }
@@ -4515,6 +4552,7 @@ sub get_scantronformat_file {
                 close($fh);
             }
         }
+        chomp(@lines);
     }
     return @lines;
 }
@@ -5424,7 +5462,7 @@ sub courselastaccess {
 sub extract_lastaccess {
     my ($returnhash,$rep) = @_;
     if (ref($returnhash) eq 'HASH') {
-        unless ($rep eq 'unknown_command' || $rep eq 'no_such_host' || 
+        unless ($rep eq 'unknown_cmd' || $rep eq 'no_such_host' || 
                 $rep eq 'con_lost' || $rep eq 'rejected' || $rep eq 'refused' ||
                  $rep eq '') {
             my @pairs=split(/\&/,$rep);
@@ -9465,7 +9503,7 @@ sub auto_instsec_reformat {
             my $info = &freeze_escape($instsecref);
             my $response=&reply('autoinstsecreformat:'.$cdom.':'.
                                 $action.':'.$info,$server);
-            next if ($response =~ /(con_lost|error|no_such_host|refused|unknown_command)/);
+            next if ($response =~ /(con_lost|error|no_such_host|refused|unknown_cmd)/);
             my @items = split(/&/,$response);
             foreach my $item (@items) {
                 my ($key,$value) = split(/=/,$item);
@@ -9546,7 +9584,7 @@ sub auto_export_grades {
             my $grades = &freeze_escape($gradesref);
             my $response=&reply('encrypt:autoexportgrades:'.$cdom.':'.$cnum.':'.
                                 $info.':'.$grades,$homeserver);
-            unless ($response =~ /(con_lost|error|no_such_host|refused|unknown_command)/) {
+            unless ($response =~ /(con_lost|error|no_such_host|refused|unknown_cmd)/) {
                 my @items = split(/&/,$response);
                 foreach my $item (@items) {
                     my ($key,$value) = split('=',$item);
@@ -12688,17 +12726,10 @@ sub symbread {
     my %bighash;
     my $syval='';
     if (($env{'request.course.fn'}) && ($thisfn)) {
-        my $targetfn = $thisfn;
-        if ( ($thisfn =~ m/^(uploaded|editupload)\//) && ($thisfn !~ m/\.(page|sequence)$/) ) {
-            $targetfn = 'adm/wrapper/'.$thisfn;
-        }
-	if ($targetfn =~ m|^adm/wrapper/(ext/.*)|) {
-	    $targetfn=$1;
-	}
         unless ($ignoresymbdb) {
             if (tie(%hash,'GDBM_File',$env{'request.course.fn'}.'_symb.db',
                           &GDBM_READER(),0640)) {
-	        $syval=$hash{$targetfn};
+	        $syval=$hash{$thisfn};
                 untie(%hash);
             }
             if ($syval && $checkforblock) {