--- loncom/auth/lonauth.pm	2011/06/10 01:30:33	1.101.8.6
+++ loncom/auth/lonauth.pm	2010/09/15 18:28:45	1.101.10.1
@@ -1,7 +1,7 @@
 # The LearningOnline Network
 # User Authentication Module
 #
-# $Id: lonauth.pm,v 1.101.8.6 2011/06/10 01:30:33 raeburn Exp $
+# $Id: lonauth.pm,v 1.101.10.1 2010/09/15 18:28:45 raeburn Exp $
 #
 # Copyright Michigan State University Board of Trustees
 #
@@ -209,33 +209,23 @@ sub handler {
 # -------------------------------- Prevent users from attempting to login twice
     my $handle = &Apache::lonnet::check_for_valid_session($r);
     if ($handle ne '') {
-        my $lonidsdir=$r->dir_config('lonIDsDir');
-        if ($handle=~/^publicuser\_/) {
-# For "public user" - remove it, we apparently really want to login
-            unlink($r->dir_config('lonIDsDir')."/$handle.id");
-        } else {
 # Indeed, a valid token is found
-            &Apache::lonnet::transfer_profile_to_env($lonidsdir,$handle);
-            &Apache::loncommon::content_type($r,'text/html');
-            $r->send_http_header;
-            my $start_page =
-                &Apache::loncommon::start_page('Already logged in');
-            my $end_page =
-                &Apache::loncommon::end_page();
-            my $dest = '/adm/roles';
-            if ($env{'form.firsturl'} ne '') {
-                $dest = $env{'form.firsturl'};
-            }
-            $r->print(
-               $start_page
-              .'<h1>'.&mt('You are already logged in!').'</h1>'
-              .'<p>'.&mt('Please either [_1]continue the current session[_2] or [_3]log out[_4].'
-                    ,'<a href="'.$dest.'">','</a>','<a href="/adm/logout">','</a>')
-              .'</p>'
-              .$end_page
-            );
-            return OK;
-        }
+	&Apache::loncommon::content_type($r,'text/html');
+	$r->send_http_header;
+	my $start_page = 
+	    &Apache::loncommon::start_page('Already logged in');
+	my $end_page = 
+	    &Apache::loncommon::end_page();
+        $r->print(
+           $start_page
+          .'<h1>'.&mt('You are already logged in!').'</h1>'
+          .'<p>'.&mt('Please either [_1]continue the current session[_2] or [_3]log out[_4].'
+                    ,'<a href="/adm/roles">','</a>','<a href="/adm/logout">','</a>')
+          .'</p>'
+          .'<p><a href="/adm/loginproblems.html">'.&mt('Login problems?').'</a></p>'
+          .$end_page
+        );
+        return OK;
     }
 
 # ---------------------------------------------------- No valid token, continue
@@ -346,48 +336,35 @@ sub handler {
     if (grep(/^login$/,@cancreate)) {
         $defaultauth = 1;
     }
-    my $clientcancheckhost = 1;
-    my $authhost=Apache::lonnet::authenticate($form{'uname'},$upass,
-                                              $form{'udom'},$defaultauth,
-                                              $clientcancheckhost);
+    my $uname = $form{'uname'};
+    my $authhost=Apache::lonnet::authenticate($uname,$upass,
+                                              $form{'udom'},$defaultauth);
     
 # --------------------------------------------------------------------- Failed?
 
     if ($authhost eq 'no_host') {
-	&failed($r,'Username and/or password could not be authenticated.',
-		\%form);
-        return OK;
-    } elsif ($authhost eq 'no_account_on_host') {
-        my %domconfig = 
-            &Apache::lonnet::get_dom('configuration',['usercreation'],$form{'udom'});
-        if (grep(/^login$/,@cancreate)) {
-            my $domdesc = &Apache::lonnet::domain($form{'udom'},'description');
-            unless (&check_can_host($r,\%form,'no_account_on_host',$domdesc)) {
-                return OK;     
-            }
-            my $start_page = 
-                &Apache::loncommon::start_page('Create a user account in LON-CAPA',
-                                               '',{'no_inline_link'   => 1,});
-            my $lonhost = $r->dir_config('lonHostID');
-            my $origmail = $Apache::lonnet::perlvar{'lonSupportEMail'};
-            my $contacts = 
-                &Apache::loncommon::build_recipient_list(undef,'helpdeskmail',
-                                                        $form{'udom'},$origmail);
-            my ($contact_email) = split(',',$contacts); 
-            my $output = &Apache::createaccount::username_check($form{'uname'}, 
-                                                                $form{'udom'},$domdesc,'',
-                                                                $lonhost,$contact_email,$contact_name);
-            &Apache::loncommon::content_type($r,'text/html');
-            $r->send_http_header;
-            &Apache::createaccount::print_header($r,$start_page);
-            $r->print('<h3>'.&mt('Account creation').'</h3>'.
-                      &mt('Although your username and password were authenticated, you do not currently have a LON-CAPA account at this institution.').'<br />'.
-                      $output.&Apache::loncommon::end_page());
+        my $lc_uname = lc($form{'uname'});
+        if ($uname eq $lc_uname) {
+            &failed($r,'Username and/or password could not be authenticated.',
+                    \%form);
             return OK;
         } else {
-            &failed($r,'Although your username and password were authenticated, you do not currently have a LON-CAPA account in this domain, and you are not permitted to create one.',\%form);
-            return OK;
+            $authhost=Apache::lonnet::authenticate($lc_uname,$upass,
+                                                   $form{'udom'},$defaultauth);
+            if ($authhost eq 'no_host') {
+                &failed($r,'Username (in lower case) and/or password could not be authenticated.',
+                        \%form);
+                return OK;
+            } elsif ($authhost eq 'no_account_on_host') {
+                &create_account($r,\%form,\@cancreate,$lc_uname,$contact_name);
+                return OK;
+            } else {
+                $form{'uname'} = $lc_uname; 
+            }
         }
+    } elsif ($authhost eq 'no_account_on_host') {
+        &create_account($r,\%form,\@cancreate,$uname);
+        return OK;
     }
 
     if (($firsturl eq '') || 
@@ -417,106 +394,47 @@ sub handler {
 	}
     }
 
-    unless (&check_can_host($r,\%form,$authhost)) {
-        return OK;
-    }
-
     if ($r->dir_config("lonBalancer") eq 'yes') {
 	&success($r,$form{'uname'},$form{'udom'},$authhost,'noredirect',undef,
 		 \%form);
-        my $otherserver = &Apache::lonnet::spareserver(30000,undef,1,$form{'udom'});
-	$r->internal_redirect('/adm/switchserver?otherserver='.$otherserver.'&origurl='.$firsturl);
-        return OK;
+	$r->internal_redirect('/adm/switchserver');
     } else {
-# ------------------------------------------------------- Do the load balancing
-
-# ---------------------------------------------------------- Determine own load
-        my $loadlim = $r->dir_config('lonLoadLim');
-        my $loadavg;
-        {
-            my $loadfile=Apache::File->new('/proc/loadavg');
-            $loadavg=<$loadfile>;
-        }
-        $loadavg =~ s/\s.*//g;
-        my $loadpercent=sprintf("%.1f",100*$loadavg/$loadlim);
-        my $userloadpercent=&Apache::lonnet::userload();
-
-# ---------------------------------------------------------- Are we overloaded?
-        if ((($userloadpercent>100.0)||($loadpercent>100.0))) {
-            my $unloaded=Apache::lonnet::spareserver($loadpercent,$userloadpercent,1,$form{'udom'});
-            if ($unloaded) {
-                &success($r,$form{'uname'},$form{'udom'},$authhost,'noredirect',
-                         undef,\%form);
-                $r->internal_redirect('/adm/switchserver?otherserver='.$unloaded.'&origurl='.$firsturl);
-                return OK;
-            }
-        }
-        &success($r,$form{'uname'},$form{'udom'},$authhost,$firsturl,undef,
-                 \%form);
-        return OK;
+	&success($r,$form{'uname'},$form{'udom'},$authhost,$firsturl,undef,
+		 \%form);
     }
+    return OK;
 }
 
-sub check_can_host {
-    my ($r,$form,$authhost,$domdesc) = @_;
-    return unless (ref($form) eq 'HASH');
-    my $canhost = 1;
-    my $lonhost = $r->dir_config('lonHostID');
-    my $udom = $form->{'udom'};
-    my @intdoms;
-    my $internet_names = &Apache::lonnet::get_internet_names($lonhost);
-    if (ref($internet_names) eq 'ARRAY') {
-        @intdoms = @{$internet_names};
-    }
-    my $uprimary_id = &Apache::lonnet::domain($udom,'primary');
-    my $uint_dom = &Apache::lonnet::internet_dom($uprimary_id);
-    unless ($uint_dom ne '' && grep(/^\Q$uint_dom\E$/,@intdoms)) {
-        my $machine_dom = &Apache::lonnet::host_domain($lonhost);
-        my $hostname = &Apache::lonnet::hostname($lonhost);
-        my $serverhomeID = &Apache::lonnet::get_server_homeID($hostname);
-        my $serverhomedom = &Apache::lonnet::host_domain($serverhomeID);
-        my %defdomdefaults = &Apache::lonnet::get_domain_defaults($serverhomedom);
-        my %udomdefaults = &Apache::lonnet::get_domain_defaults($udom);
-        my $loncaparev;
-        if ($authhost eq 'no_account_on_host') {
-            $loncaparev = &Apache::lonnet::get_server_loncaparev($machine_dom);
-        } else {
-            $loncaparev = &Apache::lonnet::get_server_loncaparev($machine_dom,$lonhost);
-        }
-        $canhost = &Apache::lonnet::can_host_session($udom,$lonhost,$loncaparev,
-                                                     $udomdefaults{'remotesessions'},
-                                                     $defdomdefaults{'hostedsessions'});
-    }
-    unless ($canhost) {
-        if ($authhost eq 'no_account_on_host') {
-            my ($login_host,$hostname) = &Apache::lonnet::choose_server($udom);
-            &Apache::loncommon::content_type($r,'text/html');
-            $r->send_http_header;
-            if ($login_host ne '') {
-                my $protocol = $Apache::lonnet::protocol{$login_host};
-                $protocol = 'http' if ($protocol ne 'https');
-                my $newurl = $protocol.'://'.$hostname.'/adm/createaccount';
-                $r->print(&Apache::loncommon::start_page('Create a user account in LON-CAPA').
-                          '<h3>'.&mt('Account creation').'</h3>'.
-                          &mt('You do not currently have a LON-CAPA account at this institution.').'<br />'.
-                          '<p>'.&mt('You will be able to create one by logging into a LON-CAPA server within the [_1] domain.',$domdesc).'</p>'.
-                          '<p>'.&mt('[_1]Log in[_2]','<a href="'.$newurl.'">','</a>').
-                          &Apache::loncommon::end_page());
-            } else {
-                $r->print(&Apache::loncommon::start_page('Access to LON-CAPA unavailable').
-                          '<h3>'.&mt('Account creation unavailable').'</h3>'.
-                          &mt('You do not currently have a LON-CAPA account at this institution.').'<br />'.
-                          '<p>'.&mt('Currently a LON-CAPA server is not available within the [_1] domain for you to log-in to, to create an account.',$domdesc).'</p>'.
-                          &Apache::loncommon::end_page());
-            }
-        } else {
-            &success($r,$form->{'uname'},$udom,$authhost,'noredirect',undef,
-                     $form);
-            my ($otherserver) = &Apache::lonnet::choose_server($udom);
-            $r->internal_redirect('/adm/switchserver?otherserver='.$otherserver);
-        }
+sub create_account {
+    my ($r,$form,$cancreate,$uname,$contact_name) = @_;
+    return unless((ref($form) eq 'HASH') && (ref($cancreate) eq 'ARRAY'));
+    my %domconfig =
+        &Apache::lonnet::get_dom('configuration',['usercreation'],$form->{'udom'});
+    if (grep(/^login$/,@{$cancreate})) {
+        my $start_page =
+            &Apache::loncommon::start_page('Create a user account in LON-CAPA',
+                                           '',{'no_inline_link'   => 1,});
+        my $domdesc = &Apache::lonnet::domain($form->{'udom'},'description');
+        my $lonhost = $r->dir_config('lonHostID');
+        my $origmail = $Apache::lonnet::perlvar{'lonSupportEMail'};
+        my $contacts =
+            &Apache::loncommon::build_recipient_list(undef,'helpdeskmail',
+                                                    $form->{'udom'},$origmail);
+        my ($contact_email) = split(',',$contacts);
+        my $output = 
+            &Apache::createaccount::username_check($uname,$form->{'udom'},
+                                                   $domdesc,'',$lonhost,
+                                                   $contact_email,$contact_name);
+        &Apache::loncommon::content_type($r,'text/html');
+        $r->send_http_header;
+        &Apache::createaccount::print_header($r,$start_page);
+        $r->print('<h3>'.&mt('Account creation').'</h3>'.
+                  &mt('Although your username and password were authenticated, you do not currently have a LON-CAPA account at this institution.').'<br />'.
+                  $output.&Apache::loncommon::end_page());
+    } else {
+        &failed($r,'Although your username and password were authenticated, you do not currently have a LON-CAPA account in this domain, and you are not permitted to create one.',$form);
     }
-    return $canhost;
+    return;
 }
 
 1;