--- loncom/lonnet/perl/lonnet.pm	2022/02/17 22:35:52	1.1483
+++ loncom/lonnet/perl/lonnet.pm	2022/09/18 22:33:45	1.1492
@@ -1,7 +1,7 @@
 # The LearningOnline Network
 # TCP networking package
 #
-# $Id: lonnet.pm,v 1.1483 2022/02/17 22:35:52 raeburn Exp $
+# $Id: lonnet.pm,v 1.1492 2022/09/18 22:33:45 raeburn Exp $
 #
 # Copyright Michigan State University Board of Trustees
 #
@@ -1323,7 +1323,7 @@ sub changepass {
 sub queryauthenticate {
     my ($uname,$udom)=@_;
     my $uhome=&homeserver($uname,$udom);
-    if (!$uhome) {
+    if ((!$uhome) || ($uhome eq 'no_host')) {
 	&logthis("User $uname at $udom is unknown when looking for authentication mechanism");
 	return 'no_host';
     }
@@ -1372,12 +1372,35 @@ sub authenticate {
     }
     if ($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;
@@ -2593,6 +2616,10 @@ 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(/\&/,$response);
@@ -2622,6 +2649,9 @@ sub inst_userrules {
             } elsif ($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);
@@ -2677,9 +2707,12 @@ sub get_domain_defaults {
         $domdefaults{'timezone_def'} = $domconfig{'defaults'}{'timezone_def'};
         $domdefaults{'datelocale_def'} = $domconfig{'defaults'}{'datelocale_def'};
         $domdefaults{'portal_def'} = $domconfig{'defaults'}{'portal_def'};
+        $domdefaults{'portal_def_email'} = $domconfig{'defaults'}{'portal_def_email'};
+        $domdefaults{'portal_def_web'} = $domconfig{'defaults'}{'portal_def_web'};
         $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');
@@ -2936,6 +2969,26 @@ sub course_portal_url {
     return $firsturl;
 }
 
+sub url_prefix {
+    my ($r,$dom,$home,$context) = @_;
+    my $prefix;
+    my %domdefs = &get_domain_defaults($dom);
+    if ($domdefs{'portal_def'} && $domdefs{'portal_def_'.$context}) {
+        if ($domdefs{'portal_def'} =~ m{^(https?://[^/]+)}) {
+            $prefix = $1;
+        }
+    }
+    if ($prefix eq '') {
+        my $hostname = &hostname($home);
+        my $protocol = $protocol{$home};
+        $protocol = 'http' if ($protocol{$home} ne 'https');
+        my $alias = &use_proxy_alias($r,$home);
+        $hostname = $alias if ($alias ne '');
+        $prefix = $protocol.'://'.$hostname;
+    }
+    return $prefix;
+}
+
 # --------------------------------------------- Get domain config for passwords
 
 sub get_passwdconf {
@@ -4910,6 +4963,7 @@ sub get_scantronformat_file {
                 close($fh);
             }
         }
+        chomp(@lines);
     }
     return @lines;
 }
@@ -6840,31 +6894,31 @@ sub course_adhocrole_privs {
             $full{$priv} = $restrict;
         }
         foreach my $item (split(/,/,$overrides{"internal.adhocpriv.$rolename"})) {
-             next if ($item eq '');
-             my ($rule,$rest) = split(/=/,$item);
-             next unless (($rule eq 'off') || ($rule eq 'on'));
-             foreach my $priv (split(/:/,$rest)) {
-                 if ($priv ne '') {
-                     if ($rule eq 'off') {
-                         $possremove{$priv} = 1;
-                     } else {
-                         $possadd{$priv} = 1;
-                     }
-                 }
-             }
-         }
-         foreach my $priv (sort(keys(%full))) {
-             if (exists($currprivs{$priv})) {
-                 unless (exists($possremove{$priv})) {
-                     $storeprivs{$priv} = $currprivs{$priv};
-                 }
-             } elsif (exists($possadd{$priv})) {
-                 $storeprivs{$priv} = $full{$priv};
-             }
-         }
-         $coursepriv = ':'.join(':',map { $_.'&'.$storeprivs{$_}; } sort(keys(%storeprivs)));
-     }
-     return $coursepriv;
+            next if ($item eq '');
+            my ($rule,$rest) = split(/=/,$item);
+            next unless (($rule eq 'off') || ($rule eq 'on'));
+            foreach my $priv (split(/:/,$rest)) {
+                if ($priv ne '') {
+                    if ($rule eq 'off') {
+                        $possremove{$priv} = 1;
+                    } else {
+                        $possadd{$priv} = 1;
+                    }
+                }
+            }
+        }
+        foreach my $priv (sort(keys(%full))) {
+            if (exists($currprivs{$priv})) {
+                unless (exists($possremove{$priv})) {
+                    $storeprivs{$priv} = $currprivs{$priv};
+                }
+            } elsif (exists($possadd{$priv})) {
+                $storeprivs{$priv} = $full{$priv};
+            }
+        }
+        $coursepriv = ':'.join(':',map { $_.'&'.$storeprivs{$_}; } sort(keys(%storeprivs)));
+    }
+    return $coursepriv;
 }
 
 sub group_roleprivs {
@@ -7925,6 +7979,7 @@ sub usertools_access {
                       blog      => 1,
                       webdav    => 1,
                       portfolio => 1,
+                      timezone  => 1,
                  );
     }
     return if (!defined($tools{$tool}));
@@ -8120,6 +8175,7 @@ sub check_can_request {
     my @options = ('approval','validate','autolimit');
     my $optregex = join('|',@options);
     if ((ref($can_request) eq 'HASH') && (ref($types) eq 'ARRAY')) {
+        my %willtrust;
         foreach my $type (@{$types}) {
             if (&usertools_access($uname,$udom,$type,undef,
                                   'requestcourses')) {
@@ -8139,12 +8195,17 @@ sub check_can_request {
                         if (ref($request_domains) eq 'HASH') {
                             my ($otherdom) = ($item =~ /^($match_domain):($optregex)(=?\d*)$/);
                             if ($otherdom ne '') {
-                                if (ref($request_domains->{$type}) eq 'ARRAY') {
-                                    unless (grep(/^\Q$otherdom\E$/,@{$request_domains->{$type}})) {
+                                unless (exists($willtrust{$otherdom})) {
+                                    $willtrust{$otherdom} = &will_trust('reqcrs',$env{'user.domain'},$otherdom);
+                                }
+                                if ($willtrust{$otherdom}) {
+                                    if (ref($request_domains->{$type}) eq 'ARRAY') {
+                                        unless (grep(/^\Q$otherdom\E$/,@{$request_domains->{$type}})) {
+                                            push(@{$request_domains->{$type}},$otherdom);
+                                        }
+                                    } else {
                                         push(@{$request_domains->{$type}},$otherdom);
                                     }
-                                } else {
-                                    push(@{$request_domains->{$type}},$otherdom);
                                 }
                             }
                         }
@@ -13735,17 +13796,10 @@ 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) {