--- loncom/auth/switchserver.pm	2020/10/23 21:26:32	1.35.2.3
+++ loncom/auth/switchserver.pm	2022/07/08 15:52:52	1.35.2.6.2.2
@@ -1,7 +1,7 @@
 # The LearningOnline Network
 # Switch Servers Handler
 #
-# $Id: switchserver.pm,v 1.35.2.3 2020/10/23 21:26:32 raeburn Exp $
+# $Id: switchserver.pm,v 1.35.2.6.2.2 2022/07/08 15:52:52 raeburn Exp $
 #
 # Copyright Michigan State University Board of Trustees
 #
@@ -29,7 +29,7 @@
 package Apache::switchserver;
 
 use strict;
-use Apache::Constants qw(:common);
+use Apache::Constants qw(:common :remotehost);
 use Apache::lonnet;
 use Digest::MD5 qw(md5_hex);
 use CGI::Cookie();
@@ -57,7 +57,7 @@ sub do_redirect {
     my ($r,$url,$only_body,$extra_text) = @_;
     $r->send_http_header;
     my $delay = 0.5;
-    if ($only_body) {
+    if ($only_body && !$extra_text) {
         $delay = 0;
     }
     my $start_page = 
@@ -97,7 +97,7 @@ sub flush_course_logs {
 
 sub handler {
     my ($r) = @_;
-    
+
     my $handle=&init_env($r);
     if (!defined($handle)) { return FORBIDDEN; }
 
@@ -111,7 +111,7 @@ sub handler {
 						   $env{'user.name'});
 	if (! $env{'form.otherserver'}) {
 	    $env{'form.otherserver'} = 
-		&Apache::lonnet::spareserver(30000,undef,1);
+		&Apache::lonnet::spareserver($r,30000,undef,1);
 	}
 	$switch_to=&Apache::lonnet::hostname($env{'form.otherserver'});
     }
@@ -123,6 +123,10 @@ sub handler {
         if ($Apache::lonnet::protocol{$env{'form.otherserver'}} eq 'https') {
             $protocol = $Apache::lonnet::protocol{$env{'form.otherserver'}};
         }
+        unless ($env{'form.otherserver'} eq $r->dir_config('lonHostID')) {
+            my $alias = &Apache::lonnet::use_proxy_alias($r,$env{'form.otherserver'});
+            $switch_to = $alias if ($alias ne '');
+        }
     }
 
     if ($env{'user.name'} eq 'public'
@@ -203,7 +207,8 @@ sub handler {
     } else {
         $logmsg .= " (no role)";
     }
-    $logmsg .= ' '.$ENV{'REMOTE_ADDR'};
+    my $ip = &Apache::lonnet::get_requestor_ip($r,REMOTE_NOLOOKUP);
+    $logmsg .= ' '.$ip;
     &Apache::lonnet::log($env{'user.domain'},$env{'user.name'},
 			 $env{'user.home'},$logmsg);
 
@@ -226,7 +231,7 @@ sub handler {
 
 # ---------------------------------------------------------------- Get handover
 
-    my ($is_balancer,$setcookie,$newcookieid);
+    my ($is_balancer,$setcookie,$newcookieid,$otherbalcookie);
     my $only_body = 0;
     ($is_balancer,undef,$setcookie) =
         &Apache::lonnet::check_loadbalancing($env{'user.name'},$env{'user.domain'},'switchserver');
@@ -248,7 +253,7 @@ sub handler {
         $otherbalcookie = $env{'request.balancercookie'};
     }
 
-    my %info=('ip'       => $ENV{'REMOTE_ADDR'},
+    my %info=('ip'       => $ip,
 	      'domain'   => $env{'user.domain'},
 	      'username' => $env{'user.name'},
 	      'role'     => $env{'form.role'},
@@ -265,19 +270,45 @@ sub handler {
     if ($env{'form.symb'}) {
         $info{'symb'} = $env{'form.symb'};
     }
+    my $ssologoutscript = ''; 
     if ($env{'request.sso.login'}) {
 	$info{'sso.login'} = $env{'request.sso.login'};
+        if (defined($r->dir_config("lonSSOUserLogoutScriptFile_$info{domain}"))) {
+            if (open(my $fh,'<',$r->dir_config("lonSSOUserLogoutScriptFile_$info{domain}"))) {
+                $ssologoutscript .= join('',<$fh>);
+                close($fh);
+            }
+        }
+        if (defined($r->dir_config('lonSSOUserLogoutScriptFile'))) {
+            if (open(my $fh,'<',$r->dir_config('lonSSOUserLogoutScriptFile'))) {
+                $ssologoutscript .= join('',<$fh>);
+                close($fh);
+            }
+        }
     }
     if ($env{'request.sso.reloginserver'}) {
         $info{'sso.reloginserver'} = $env{'request.sso.reloginserver'};
     }
+    if ($env{'request.linkprot'}) {
+        $info{'linkprot'} = $env{'request.linkprot'};
+        foreach my $item ('linkprotuser','linkprotexit') {
+            if ($env{'request.'.$item}) {
+                $info{$item} = $env{'request.'.$item};
+            }
+        }
+    } elsif ($env{'request.linkkey'} ne '') {
+        $info{'linkkey'} = $env{'request.linkkey'};
+    }
+    if ($env{'request.deeplink.login'}) {
+        $info{'deeplink.login'} = $env{'request.deeplink.login'};
+    }
     my $token = &Apache::lonnet::tmpput(\%info,$env{'form.otherserver'});
     my $url =$protocol.'://'.$switch_to.'/adm/login?'.
 	'domain='.$env{'user.domain'}.
 	'&amp;username='.$env{'user.name'}.
 	'&amp;token='.$token;
 # --------------------------------------------------------------- Screen Output
-    return &do_redirect($r, $url, $only_body);
+    return &do_redirect($r, $url, $only_body, $ssologoutscript);
 }
 
 1;