--- loncom/lond	2020/01/13 03:46:32	1.489.2.34
+++ loncom/lond	2016/08/11 16:35:14	1.524
@@ -2,7 +2,7 @@
 # The LearningOnline Network
 # lond "LON Daemon" Server (port "LOND" 5663)
 #
-# $Id: lond,v 1.489.2.34 2020/01/13 03:46:32 raeburn Exp $
+# $Id: lond,v 1.524 2016/08/11 16:35:14 raeburn Exp $
 #
 # Copyright Michigan State University Board of Trustees
 #
@@ -15,6 +15,7 @@
 #
 # LON-CAPA is distributed in the hope that it will be useful,
 # but WITHOUT ANY WARRANTY; without even the implied warranty of
+
 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 # GNU General Public License for more details.
 #
@@ -40,7 +41,7 @@ use IO::File;
 #use Apache::File;
 use POSIX;
 use Crypt::IDEA;
-use LWP::UserAgent();
+use HTTP::Request;
 use Digest::MD5 qw(md5_hex);
 use GDBM_File;
 use Authen::Krb5;
@@ -57,13 +58,14 @@ use Mail::Send;
 use Crypt::Eksblowfish::Bcrypt;
 use Digest::SHA;
 use Encode;
+use LONCAPA::LWPReq;
 
 my $DEBUG = 0;		       # Non zero to enable debug log entries.
 
 my $status='';
 my $lastlog='';
 
-my $VERSION='$Revision: 1.489.2.34 $'; #' stupid emacs
+my $VERSION='$Revision: 1.524 $'; #' stupid emacs
 my $remoteVERSION;
 my $currenthostid="default";
 my $currentdomainid;
@@ -666,10 +668,8 @@ sub PushFile {
                 $clientprotocol = 'http' if ($clientprotocol ne 'https');
                 my $url = '/adm/'.$filename;
                 $url =~ s{_}{/};
-                my $ua=new LWP::UserAgent;
-                $ua->timeout(60);
                 my $request=new HTTP::Request('GET',"$clientprotocol://$clienthost$url");
-                my $response=$ua->request($request);
+                my $response = LONCAPA::LWPReq::makerequest($clientname,$request,'',\%perlvar,60,0);
                 if ($response->is_error()) {
                     &logthis('<font color="red"> Pushfile: unable to install '
                             .$tablefile." - error attempting to pull data. </font>");
@@ -1424,22 +1424,6 @@ sub du2_handler {
 #    selected directory the filename followed by the full output of
 #    the stat function is returned.  The returned info for each
 #    file are separated by ':'.  The stat fields are separated by &'s.
-#
-#    If the requested path contains /../ or is:
-#
-#    1. for a directory, and the path does not begin with one of:
-#        (a) /home/httpd/html/res/<domain>
-#        (b) /home/httpd/html/userfiles/
-#        (c) /home/httpd/lonUsers/<domain>/<1>/<2>/<3>/<username>/userfiles
-#    or is:
-#
-#    2. for a file, and the path (after prepending) does not begin with one of:
-#        (a) /home/httpd/lonUsers/<domain>/<1>/<2>/<3>/<username>/
-#        (b) /home/httpd/html/res/<domain>/<username>/
-#        (c) /home/httpd/html/userfiles/<domain>/<username>/
-#
-#    the response will be "refused".
-#
 # Parameters:
 #    $cmd        - The command that dispatched us (ls).
 #    $ulsdir     - The directory path to list... I'm not sure what this
@@ -1461,17 +1445,8 @@ sub ls_handler {
     my $rights;
     my $ulsout='';
     my $ulsfn;
-    if ($ulsdir =~m{/\.\./}) {
-        &Failure($client,"refused\n",$userinput);
-        return 1;
-    }
     if (-e $ulsdir) {
 	if(-d $ulsdir) {
-            unless (($ulsdir =~ m{^/home/httpd/html/(res/$LONCAPA::match_domain|userfiles/)}) ||
-                    ($ulsdir =~ m{^/home/httpd/lonUsers/$LONCAPA::match_domain(?:/[\w\-.@]){3}/$LONCAPA::match_name/userfiles})) {
-                &Failure($client,"refused\n",$userinput);
-                return 1;
-            }
 	    if (opendir(LSDIR,$ulsdir)) {
 		while ($ulsfn=readdir(LSDIR)) {
 		    undef($obs);
@@ -1495,11 +1470,6 @@ sub ls_handler {
 		closedir(LSDIR);
 	    }
 	} else {
-            unless (($ulsdir =~ m{^/home/httpd/lonUsers/$LONCAPA::match_domain(?:/[\w\-.@]){3}/$LONCAPA::match_name/}) ||
-                    ($ulsdir =~ m{^/home/httpd/html/(?:res|userfiles)/$LONCAPA::match_domain/$LONCAPA::match_name/})) { 
-                &Failure($client,"refused\n",$userinput);
-                return 1;
-            }
 	    my @ulsstats=stat($ulsdir);
 	    $ulsout.=$ulsfn.'&'.join('&',@ulsstats).':';
 	}
@@ -1524,22 +1494,6 @@ sub ls_handler {
 #    selected directory the filename followed by the full output of
 #    the stat function is returned.  The returned info for each
 #    file are separated by ':'.  The stat fields are separated by &'s.
-#
-#    If the requested path contains /../ or is:
-#
-#    1. for a directory, and the path does not begin with one of:
-#        (a) /home/httpd/html/res/<domain>
-#        (b) /home/httpd/html/userfiles/
-#        (c) /home/httpd/lonUsers/<domain>/<1>/<2>/<3>/<username>/userfiles
-#    or is:
-#
-#    2. for a file, and the path (after prepending) does not begin with one of:
-#        (a) /home/httpd/lonUsers/<domain>/<1>/<2>/<3>/<username>/
-#        (b) /home/httpd/html/res/<domain>/<username>/
-#        (c) /home/httpd/html/userfiles/<domain>/<username>/
-#
-#    the response will be "refused".
-#
 # Parameters:
 #    $cmd        - The command that dispatched us (ls).
 #    $ulsdir     - The directory path to list... I'm not sure what this
@@ -1560,17 +1514,8 @@ sub ls2_handler {
     my $rights;
     my $ulsout='';
     my $ulsfn;
-    if ($ulsdir =~m{/\.\./}) {
-        &Failure($client,"refused\n",$userinput);
-        return 1;
-    }
     if (-e $ulsdir) {
         if(-d $ulsdir) {
-            unless (($ulsdir =~ m{^/home/httpd/html/(res/$LONCAPA::match_domain|userfiles/)}) ||
-                    ($ulsdir =~ m{^/home/httpd/lonUsers/$LONCAPA::match_domain(?:/[\w\-.@]){3}/$LONCAPA::match_name/userfiles})) {
-                &Failure($client,"refused\n","$userinput");
-                return 1;
-            }
             if (opendir(LSDIR,$ulsdir)) {
                 while ($ulsfn=readdir(LSDIR)) {
                     undef($obs);
@@ -1595,11 +1540,6 @@ sub ls2_handler {
                 closedir(LSDIR);
             }
         } else {
-            unless (($ulsdir =~ m{^/home/httpd/lonUsers/$LONCAPA::match_domain(?:/[\w\-.@]){3}/$LONCAPA::match_name/}) ||
-                    ($ulsdir =~ m{^/home/httpd/html/(?:res|userfiles)/$LONCAPA::match_domain/$LONCAPA::match_name/})) {
-                &Failure($client,"refused\n",$userinput);
-                return 1;
-            }
             my @ulsstats=stat($ulsdir);
             $ulsout.=$ulsfn.'&'.join('&',@ulsstats).':';
         }
@@ -1616,25 +1556,6 @@ sub ls2_handler {
 #    selected directory the filename followed by the full output of
 #    the stat function is returned.  The returned info for each
 #    file are separated by ':'.  The stat fields are separated by &'s.
-#
-#    If the requested path (after prepending) contains /../ or is:
-#
-#    1. for a directory, and the path does not begin with one of:
-#        (a) /home/httpd/html/res/<domain>
-#        (b) /home/httpd/html/userfiles/
-#        (c) /home/httpd/lonUsers/<domain>/<1>/<2>/<3>/<username>/userfiles
-#        (d) /home/httpd/html/priv/<domain> and client is the homeserver
-#
-#    or is:
-#
-#    2. for a file, and the path (after prepending) does not begin with one of:
-#        (a) /home/httpd/lonUsers/<domain>/<1>/<2>/<3>/<username>/
-#        (b) /home/httpd/html/res/<domain>/<username>/
-#        (c) /home/httpd/html/userfiles/<domain>/<username>/
-#        (d) /home/httpd/html/priv/<domain>/<username>/ and client is the homeserver
-#
-#    the response will be "refused".
-#
 # Parameters:
 #    $cmd        - The command that dispatched us (ls).
 #    $tail       - The tail of the request that invoked us.
@@ -1674,12 +1595,22 @@ sub ls3_handler {
     }
 
     my $dir_root = $perlvar{'lonDocRoot'};
-    if (($getpropath) || ($getuserdir)) {
+    if ($getpropath) {
         if (($uname =~ /^$LONCAPA::match_name$/) && ($udom =~ /^$LONCAPA::match_domain$/)) {
             $dir_root = &propath($udom,$uname);
             $dir_root =~ s/\/$//;
         } else {
-            &Failure($client,"refused\n",$userinput);
+            &Failure($client,"refused\n","$cmd:$tail");
+            return 1;
+        }
+    } elsif ($getuserdir) {
+        if (($uname =~ /^$LONCAPA::match_name$/) && ($udom =~ /^$LONCAPA::match_domain$/)) {
+            my $subdir=$uname.'__';
+            $subdir =~ s/(.)(.)(.).*/$1\/$2\/$3/;
+            $dir_root = $Apache::lonnet::perlvar{'lonUsersDir'}
+                       ."/$udom/$subdir/$uname";
+        } else {
+            &Failure($client,"refused\n","$cmd:$tail");
             return 1;
         }
     } elsif ($alternate_root ne '') {
@@ -1692,28 +1623,12 @@ sub ls3_handler {
             $ulsdir = $dir_root.'/'.$ulsdir;
         }
     }
-    if ($ulsdir =~m{/\.\./}) {
-        &Failure($client,"refused\n",$userinput);
-        return 1;
-    }
-    my $islocal;
-    my @machine_ids = &Apache::lonnet::current_machine_ids();
-    if (grep(/^\Q$clientname\E$/,@machine_ids)) {
-        $islocal = 1;
-    }
     my $obs;
     my $rights;
     my $ulsout='';
     my $ulsfn;
     if (-e $ulsdir) {
         if(-d $ulsdir) {
-            unless (($getpropath) || ($getuserdir) ||
-                    ($ulsdir =~ m{^/home/httpd/html/(res/$LONCAPA::match_domain|userfiles/)}) ||
-                    ($ulsdir =~ m{^/home/httpd/lonUsers/$LONCAPA::match_domain(?:/[\w\-.@]){3}/$LONCAPA::match_name/userfiles}) ||
-                    (($ulsdir =~ m{^/home/httpd/html/priv/$LONCAPA::match_domain}) && ($islocal))) {
-                &Failure($client,"refused\n",$userinput);
-                return 1;
-            }
             if (opendir(LSDIR,$ulsdir)) {
                 while ($ulsfn=readdir(LSDIR)) {
                     undef($obs);
@@ -1738,13 +1653,6 @@ sub ls3_handler {
                 closedir(LSDIR);
             }
         } else {
-            unless (($getpropath) || ($getuserdir) ||
-                    ($ulsdir =~ m{^/home/httpd/lonUsers/$LONCAPA::match_domain(?:/[\w\-.@]){3}/$LONCAPA::match_name/}) ||
-                    ($ulsdir =~ m{^/home/httpd/html/(?:res|userfiles)/$LONCAPA::match_domain/$LONCAPA::match_name/}) ||
-                    (($ulsdir =~ m{^/home/httpd/html/priv/$LONCAPA::match_domain/$LONCAPA::match_name/}) && ($islocal))) {
-                &Failure($client,"refused\n",$userinput);
-                return 1;
-            }
             my @ulsstats=stat($ulsdir);
             $ulsout.=$ulsfn.'&'.join('&',@ulsstats).':';
         }
@@ -1795,7 +1703,7 @@ sub read_lonnet_global {
                 }
                 if ($what eq 'perlvar') {
                     if (!exists($packagevars{$what}{'lonBalancer'})) {
-                        if ($dist =~ /^(centos|rhes|fedora|scientific|oracle)/) {
+                        if ($dist =~ /^(centos|rhes|fedora|scientific)/) {
                             my $othervarref=LONCAPA::Configuration::read_conf('httpd.conf');
                             if (ref($othervarref) eq 'HASH') {
                                 $items->{'lonBalancer'} = $othervarref->{'lonBalancer'};
@@ -1888,6 +1796,16 @@ sub server_distarch_handler {
 }
 &register_handler("serverdistarch", \&server_distarch_handler, 0, 1, 0);
 
+sub server_certs_handler {
+    my ($cmd,$tail,$client) = @_;
+    my $userinput = "$cmd:$tail";
+    my $result;
+    my $result = &LONCAPA::Lond::server_certs(\%perlvar);
+    &Reply($client,\$result,$userinput);
+    return;
+}
+&register_handler("servercerts", \&server_certs_handler, 0, 1, 0);
+
 #   Process a reinit request.  Reinit requests that either
 #   lonc or lond be reinitialized so that an updated 
 #   host.tab or domain.tab can be processed.
@@ -2020,18 +1938,14 @@ sub authenticate_handler {
                 my ($remote,$hosted);
                 my $remotesession = &get_usersession_config($udom,'remotesession');
                 if (ref($remotesession) eq 'HASH') {
-                    $remote = $remotesession->{'remote'};
+                    $remote = $remotesession->{'remote'}
                 }
                 my $hostedsession = &get_usersession_config($clienthomedom,'hostedsession');
                 if (ref($hostedsession) eq 'HASH') {
                     $hosted = $hostedsession->{'hosted'};
                 }
-                my $loncaparev = $clientversion;
-                if ($loncaparev eq '') {
-                    $loncaparev = $Apache::lonnet::loncaparevs{$clientname};
-                }
                 $canhost = &Apache::lonnet::can_host_session($udom,$clientname,
-                                                             $loncaparev,
+                                                             $clientversion,
                                                              $remote,$hosted);
             }
         }
@@ -2107,84 +2021,12 @@ sub change_password_handler {
     }
     if($validated) {
 	my $realpasswd  = &get_auth_type($udom, $uname); # Defined since authd.
+	
 	my ($howpwd,$contentpwd)=split(/:/,$realpasswd);
-        my $notunique;
 	if ($howpwd eq 'internal') {
 	    &Debug("internal auth");
             my $ncpass = &hash_passwd($udom,$npass);
-            my (undef,$method,@rest) = split(/!/,$contentpwd);
-            if ($method eq 'bcrypt') {
-                my %passwdconf = &Apache::lonnet::get_passwdconf($udom);
-                if (($passwdconf{'numsaved'}) && ($passwdconf{'numsaved'} =~ /^\d+$/)) {
-                    my @oldpasswds;
-                    my $userpath = &propath($udom,$uname);
-                    my $fullpath = $userpath.'/oldpasswds';
-                    if (-d $userpath) {
-                        my @oldfiles;
-                        if (-e $fullpath) {
-                            if (opendir(my $dir,$fullpath)) {
-                                (@oldfiles) = grep(/^\d+$/,readdir($dir));
-                                closedir($dir);
-                            }
-                            if (@oldfiles) {
-                                @oldfiles = sort { $b <=> $a } (@oldfiles);
-                                my $numremoved = 0;
-                                for (my $i=0; $i<@oldfiles; $i++) {
-                                    if ($i>=$passwdconf{'numsaved'}) {
-                                        if (-f "$fullpath/$oldfiles[$i]") {
-                                            if (unlink("$fullpath/$oldfiles[$i]")) {
-                                                $numremoved ++;
-                                            }
-                                        }
-                                    } elsif (open(my $fh,'<',"$fullpath/$oldfiles[$i]")) {
-                                        while (my $line = <$fh>) {
-                                            push(@oldpasswds,$line);
-                                        }
-                                        close($fh);
-                                    }
-                                }
-                                if ($numremoved) {
-                                    &logthis("unlinked $numremoved old password files for $uname:$udom");
-                                }
-                            }
-                        }
-                        push(@oldpasswds,$contentpwd);
-                        foreach my $item (@oldpasswds) {
-                            my (undef,$method,@rest) = split(/!/,$item);
-                            if ($method eq 'bcrypt') {
-                                my $result = &hash_passwd($udom,$npass,@rest);
-                                if ($result eq $item) {
-                                    $notunique = 1;
-                                    last;
-                                }
-                            }
-                        }
-                        unless ($notunique) {
-                            unless (-e $fullpath) {
-                                if (&mkpath("$fullpath/")) {
-                                    chmod(0700,$fullpath);
-                                }
-                            }
-                            if (-d $fullpath) {
-                                my $now = time;
-                                if (open(my $fh,'>',"$fullpath/$now")) {
-                                    print $fh $contentpwd;
-                                    close($fh);
-                                    chmod(0400,"$fullpath/$now");
-                                }
-                            }
-                        }
-                    }
-                }
-            }
-            if ($notunique) {
-                my $msg="Result of password change for $uname:$udom - password matches one used before";
-                if ($lonhost) {
-                    $msg .= " - request originated from: $lonhost";
-                }
-                &logthis($msg);
-                &Reply($client, "prioruse\n", $userinput);
-	    } elsif (&rewrite_password_file($udom, $uname, "internal:$ncpass")) {
+	    if(&rewrite_password_file($udom, $uname, "internal:$ncpass")) {
 		my $msg="Result of password change for $uname: pwchange_success";
                 if ($lonhost) {
                     $msg .= " - request originated from: $lonhost";
@@ -2201,7 +2043,7 @@ sub change_password_handler {
 	    my $result = &change_unix_password($uname, $npass);
             if ($result eq 'ok') {
                 &update_passwd_history($uname,$udom,$howpwd,$context);
-            }
+             }
 	    &logthis("Result of password change for $uname: ".
 		     $result);
 	    &Reply($client, \$result, $userinput);
@@ -2212,6 +2054,7 @@ sub change_password_handler {
 	    #
 	    &Failure( $client, "auth_mode_error\n", $userinput);
 	}  
+	
     } else {
 	if ($failure eq '') {
 	    $failure = 'non_authorized';
@@ -2232,8 +2075,12 @@ sub hash_passwd {
         my $plainsalt = substr($rest[1],0,22);
         $salt = Crypt::Eksblowfish::Bcrypt::de_base64($plainsalt);
     } else {
-        my %domdefaults = &Apache::lonnet::get_domain_defaults($domain);
-        my $defaultcost = $domdefaults{'intauth_cost'};
+        my $defaultcost;
+        my %domconfig =
+            &Apache::lonnet::get_dom('configuration',['password'],$domain);
+        if (ref($domconfig{'password'}) eq 'HASH') {
+            $defaultcost = $domconfig{'password'}{'cost'};
+        }
         if (($defaultcost eq '') || ($defaultcost =~ /D/)) {
             $cost = 10;
         } else {
@@ -2368,7 +2215,7 @@ sub change_authentication_handler {
 		my $result = &change_unix_password($uname, $npass);
 		&logthis("Result of password change for $uname: ".$result);
 		if ($result eq "ok") {
-                    &update_passwd_history($uname,$udom,$umode,'changeuserauth');
+                    &update_passwd_history($uname,$udom,$umode,'changeuserauth'); 
 		    &Reply($client, \$result);
 		} else {
 		    &Failure($client, \$result);
@@ -2493,18 +2340,13 @@ sub update_resource_handler {
 # FIXME: this should use the LWP mechanism, not internal alarms.
                 alarm(1200);
 		{
-		    my $ua=new LWP::UserAgent;
 		    my $request=new HTTP::Request('GET',"$remoteurl");
-		    $response=$ua->request($request,$transname);
+                    $response=&LONCAPA::LWPReq::makerequest($clientname,$request,$transname,\%perlvar,1200,0,1);
 		}
 		alarm(0);
 		if ($response->is_error()) {
-                    my $reply=&Apache::lonnet::reply("unsub:$fname","$clientname");
-                    &devalidate_meta_cache($fname);
-                    if (-e $transname) {
-                        unlink($transname);
-                    }
-                    unlink($fname);
+# FIXME: we should probably clean up here instead of just whine
+		    unlink($transname);
 		    my $message=$response->status_line;
 		    &logthis("LWP GET: $message for $fname ($remoteurl)");
 		} else {
@@ -2512,9 +2354,8 @@ sub update_resource_handler {
 # FIXME: isn't there an internal LWP mechanism for this?
 			alarm(120);
 			{
-			    my $ua=new LWP::UserAgent;
 			    my $mrequest=new HTTP::Request('GET',$remoteurl.'.meta');
-			    my $mresponse=$ua->request($mrequest,$fname.'.meta');
+                            my $mresponse = &LONCAPA::LWPReq::makerequest($clientname,$mrequest,$fname.'.meta',\%perlvar,120,0,1);
 			    if ($mresponse->is_error()) {
 				unlink($fname.'.meta');
 			    }
@@ -2589,11 +2430,15 @@ sub fetch_user_file_handler {
 	my $remoteurl=$clientprotocol.'://'.$clienthost.'/userfiles/'.$fname;
 	my $response;
 	Debug("Remote URL : $remoteurl Transfername $transname Destname: $destname");
-	alarm(120);
+	alarm(1200);
 	{
-	    my $ua=new LWP::UserAgent;
 	    my $request=new HTTP::Request('GET',"$remoteurl");
-	    $response=$ua->request($request,$transname);
+            my $verifycert = 1;
+            my @machine_ids = &Apache::lonnet::current_machine_ids();
+            if (grep(/^\Q$clientname\E$/,@machine_ids)) {
+                $verifycert = 0;
+            }
+            $response = &LONCAPA::LWPReq::makerequest($clientname,$request,$transname,\%perlvar,1200,$verifycert);
 	}
 	alarm(0);
 	if ($response->is_error()) {
@@ -2662,13 +2507,13 @@ sub remove_user_file_handler {
 	    if (-e $file) {
 		#
 		#   If the file is a regular file unlink is fine...
-		#   However it's possible the client wants a dir
-		#   removed, in which case rmdir is more appropriate
-	        #   Note: rmdir will only remove an empty directory.
+		#   However it's possible the client wants a dir 
+		#   removed, in which case rmdir is more appropriate.
+		#   Note: rmdir will only remove an empty directory.
 		#
 	        if (-f $file){
 		    unlink($file);
-                    # for html files remove the associated .bak file
+                    # for html files remove the associated .bak file 
                     # which may have been created by the editor.
                     if ($ufile =~ m{^((docs|supplemental)/(?:\d+|default)/\d+(?:|/.+)/)[^/]+\.x?html?$}i) {
                         my $path = $1;
@@ -3042,8 +2887,8 @@ sub newput_user_profile_entry {
                 &logthis("error: ".($!+0)." untie (GDBM) failed ".
                          "while attempting newput - early out as key exists");
             }
-	    &Failure($client, "key_exists: ".$key."\n",$userinput);
-	    return 1;
+            &Failure($client, "key_exists: ".$key."\n",$userinput);
+            return 1;
 	}
     }
 
@@ -3293,8 +3138,7 @@ sub get_profile_entry {
 #
 #  Parameters:
 #     $cmd               - Command keyword of request (eget).
-#     $tail              - Tail of the command.  See GetProfileEntry
-#                          for more information about this.
+#     $tail              - Tail of the command.  See GetProfileEntry
#                          for more information about this.
 #     $client            - File open on the client.
 #  Returns:
 #     1      - Continue processing
@@ -3446,6 +3290,17 @@ sub get_profile_keys {
 sub dump_profile_database {
     my ($cmd, $tail, $client) = @_;
 
+    my $res = LONCAPA::Lond::dump_profile_database($tail);
+
+    if ($res =~ /^error:/) {
+        Failure($client, \$res, "$cmd:$tail");
+    } else {
+        Reply($client, \$res, "$cmd:$tail");
+    }
+
+    return 1;  
+
+    #TODO remove 
     my $userinput = "$cmd:$tail";
    
     my ($udom,$uname,$namespace) = split(/:/,$tail);
@@ -3525,11 +3380,11 @@ sub dump_with_regexp {
     my ($cmd, $tail, $client) = @_;
 
     my $res = LONCAPA::Lond::dump_with_regexp($tail, $clientversion);
-
+    
     if ($res =~ /^error:/) {
-        &Failure($client, \$res, "$cmd:$tail");
+        Failure($client, \$res, "$cmd:$tail");
     } else {
-        &Reply($client, \$res, "$cmd:$tail");
+        Reply($client, \$res, "$cmd:$tail");
     }
 
     return 1;
@@ -3567,7 +3422,6 @@ sub store_handler {
     my ($cmd, $tail, $client) = @_;
  
     my $userinput = "$cmd:$tail";
-
     chomp($tail);
     my ($udom,$uname,$namespace,$rid,$what,$laststore) =split(/:/,$tail);
     if ($namespace ne 'roles') {
@@ -3597,7 +3451,6 @@ sub store_handler {
                     $numtrans =~ s/D//g;
                 }
             }
-
 	    $hashref->{"version:$rid"}++;
 	    my $version=$hashref->{"version:$rid"};
 	    my $allkeys=''; 
@@ -3614,7 +3467,7 @@ sub store_handler {
                 if ($numtrans) {
                     $msg = 'delay:'.$numtrans;
                 }
-                &Reply($client, "$msg\n", $userinput);
+		&Reply($client, "$msg\n", $userinput);
 	    } else {
 		&Failure($client, "error: ".($!+0)." untie(GDBM) Failed ".
 			"while attempting store\n", $userinput);
@@ -3876,37 +3729,6 @@ sub send_query_handler {
 
     my ($query,$arg1,$arg2,$arg3)=split(/\:/,$tail);
     $query=~s/\n*$//g;
-    if (($query eq 'usersearch') || ($query eq 'instdirsearch')) {
-        my $usersearchconf = &get_usersearch_config($currentdomainid,'directorysrch');
-        my $earlyout;
-        if (ref($usersearchconf) eq 'HASH') {
-            if ($currentdomainid eq $clienthomedom) {
-                if ($query eq 'usersearch') {
-                    if ($usersearchconf->{'lcavailable'} eq '0') {
-                        $earlyout = 1;
-                    }
-                } else {
-                    if ($usersearchconf->{'available'} eq '0') {
-                        $earlyout = 1;
-                    }
-                }
-            } else {
-                if ($query eq 'usersearch') {
-                    if ($usersearchconf->{'lclocalonly'}) {
-                        $earlyout = 1;
-                    }
-                } else {
-                    if ($usersearchconf->{'localonly'}) {
-                        $earlyout = 1;
-                    }
-                }
-            }
-        }
-        if ($earlyout) {
-            &Reply($client, "query_not_authorized\n");
-            return 1;
-        }
-    }
     &Reply($client, "". &sql_reply("$clientname\&$query".
 				"\&$arg1"."\&$arg2"."\&$arg3")."\n",
 	  $userinput);
@@ -4162,7 +3984,7 @@ sub put_course_id_hash_handler {
 #
 #                 domcloner - flag to indicate if user can create CCs in course's domain.
 #                             If so, ability to clone course is automatic.
-#                 hasuniquecode - filter by courses for which a six character unique code has
+#                 hasuniquecode - filter by courses for which a six character unique code has 
 #                                 been set.
 #
 #     $client  - The socket open on the client.
@@ -4172,6 +3994,17 @@ sub put_course_id_hash_handler {
 #   a reply is written to $client.
 sub dump_course_id_handler {
     my ($cmd, $tail, $client) = @_;
+
+    my $res = LONCAPA::Lond::dump_course_id_handler($tail);
+    if ($res =~ /^error:/) {
+        Failure($client, \$res, "$cmd:$tail");
+    } else {
+        Reply($client, \$res, "$cmd:$tail");
+    }
+
+    return 1;  
+
+    #TODO remove
     my $userinput = "$cmd:$tail";
 
     my ($udom,$since,$description,$instcodefilter,$ownerfilter,$coursefilter,
@@ -4619,6 +4452,122 @@ sub put_domain_handler {
 }
 &register_handler("putdom", \&put_domain_handler, 0, 1, 0);
 
+# Updates one or more entries in clickers.db file at the domain level
+#
+# Parameters:
+#    $cmd      - The command that got us here.
+#    $tail     - Tail of the command (remaining parameters).
+#                In this case a colon separated list containing:
+#                (a) the domain for which we are updating the entries,
+#                (b) the action required -- add or del -- and
+#                (c) a &-separated list of entries to add or delete.
+#    $client   - File descriptor connected to client.
+# Returns
+#     1        - Continue processing.
+#     0        - Requested to exit, caller should shut down.
+#  Side effects:
+#     reply is written to $client.
+#
+
+
+sub update_clickers {
+    my ($cmd, $tail, $client)  = @_;
+
+    my $userinput = "$cmd:$tail";
+    my ($udom,$action,$what) =split(/:/,$tail,3);
+    chomp($what);
+
+    my $hashref = &tie_domain_hash($udom, "clickers", &GDBM_WRCREAT(),
+                                 "U","$action:$what");
+
+    if (!$hashref) {
+        &Failure( $client, "error: ".($!+0)." tie(GDBM) Failed ".
+                  "while attempting updateclickers\n", $userinput);
+        return 1;
+    }
+
+    my @pairs=split(/\&/,$what);
+    foreach my $pair (@pairs) {
+        my ($key,$value)=split(/=/,$pair);
+        if ($action eq 'add') {
+            if (exists($hashref->{$key})) {
+                my @newvals = split(/,/,&unescape($value));
+                my @currvals = split(/,/,&unescape($hashref->{$key}));
+                my @merged = sort(keys(%{{map { $_ => 1 } (@newvals,@currvals)}}));
+                $hashref->{$key}=&escape(join(',',@merged));
+            } else {
+                $hashref->{$key}=$value;
+            }
+        } elsif ($action eq 'del') {
+            if (exists($hashref->{$key})) {
+                my %current;
+                map { $current{$_} = 1; } split(/,/,&unescape($hashref->{$key}));
+                map { delete($current{$_}); } split(/,/,&unescape($value));
+                if (keys(%current)) {
+                    $hashref->{$key}=&escape(join(',',sort(keys(%current))));
+                } else {
+                    delete($hashref->{$key});
+                }
+            }
+        }
+    }
+    if (&untie_user_hash($hashref)) {
+        &Reply( $client, "ok\n", $userinput);
+    } else {
+        &Failure($client, "error: ".($!+0)." untie(GDBM) failed ".
+                 "while attempting put\n",
+                 $userinput);
+    }
+    return 1;
+}
+&register_handler("updateclickers", \&update_clickers, 0, 1, 0);
+
+
+# Deletes one or more entries in a namespace db file at the domain level
+#
+# Parameters:
+#    $cmd      - The command that got us here.
+#    $tail     - Tail of the command (remaining parameters).
+#                In this case a colon separated list containing:
+#                (a) the domain for which we are deleting the entries,
+#                (b) &-separated list of keys to delete.  
+#    $client   - File descriptor connected to client.
+# Returns
+#     1        - Continue processing.
+#     0        - Requested to exit, caller should shut down.
+#  Side effects:
+#     reply is written to $client.
+#
+
+sub del_domain_handler {
+    my ($cmd,$tail,$client) = @_;
+
+    my $userinput = "$cmd:$tail";
+
+    my ($udom,$namespace,$what)=split(/:/,$tail,3);
+    chomp($what);
+    my $hashref = &tie_domain_hash($udom,$namespace,&GDBM_WRCREAT(),
+                                   "D", $what);
+    if ($hashref) {
+        my @keys=split(/\&/,$what);
+        foreach my $key (@keys) {
+            delete($hashref->{$key});
+        }
+        if (&untie_user_hash($hashref)) {
+            &Reply($client, "ok\n", $userinput);
+        } else {
+            &Failure($client, "error: ".($!+0)." untie(GDBM) Failed ".
+                    "while attempting deldom\n", $userinput);
+        }
+    } else {
+        &Failure( $client, "error: ".($!+0)." tie(GDBM) Failed ".
+                 "while attempting deldom\n", $userinput);
+    }
+    return 1;
+}
+&register_handler("deldom", \&del_domain_handler, 0, 1, 0);
+
+
 # Unencrypted get from the namespace database file at the domain level.
 # This function retrieves a keyed item from a specific named database in the
 # domain directory.
@@ -4642,7 +4591,7 @@ sub get_domain_handler {
     my ($cmd, $tail, $client) = @_;
 
 
-    my $userinput = "$cmd:$tail";
+    my $userinput = "$client:$tail";
 
     my ($udom,$namespace,$what)=split(/:/,$tail,3);
     chomp($what);
@@ -4778,7 +4727,7 @@ sub get_id_handler {
 # Returns:
 #     1   - Continue processing
 #     0   - Exit server.
-#
+#     
 #
 
 sub del_id_handler {
@@ -5185,58 +5134,6 @@ sub tmp_del_handler {
 &register_handler("tmpdel", \&tmp_del_handler, 0, 1, 0);
 
 #
-#  Process the delbalcookie command. This command deletes a balancer
-#  cookie in the lonBalancedir directory created by switchserver
-#
-# Parameters:
-#   $cmd      - Command that got us here.
-#   $cookie   - Cookie to be deleted.
-#   $client   - socket open on the client process.
-#
-# Returns:
-#   1     - Indicating processing should continue.
-# Side Effects:
-#   A cookie file is deleted from the lonBalancedir directory
-#   A reply is sent to the client.
-sub del_balcookie_handler {
-    my ($cmd, $cookie, $client) = @_;
-
-    my $userinput= "$cmd:$cookie";
-
-    chomp($cookie);
-    my $deleted = '';
-    if ($cookie =~ /^$LONCAPA::match_domain\_$LONCAPA::match_username\_[a-f0-9]{32}$/) {
-        my $execdir=$perlvar{'lonBalanceDir'};
-        if (-e "$execdir/$cookie.id") {
-            if (open(my $fh,'<',"$execdir/$cookie.id")) {
-                my $dodelete;
-                while (my $line = <$fh>) {
-                    chomp($line);
-                    if ($line eq $clientname) {
-                        $dodelete = 1;
-                        last;
-                    }
-                }
-                close($fh);
-                if ($dodelete) {
-                    if (unlink("$execdir/$cookie.id")) {
-                        $deleted = 1;
-                    }
-                }
-            }
-        }
-    }
-    if ($deleted) {
-        &Reply($client, "ok\n", $userinput);
-    } else {
-        &Failure( $client, "error: ".($!+0)."Unlinking cookie file Failed ".
-                  "while attempting delbalcookie\n", $userinput);
-    }
-    return 1;
-}
-&register_handler("delbalcookie", \&del_balcookie_handler, 0, 1, 0);
-
-#
 #   Processes the setannounce command.  This command
 #   creates a file named announce.txt in the top directory of
 #   the documentn root and sets its contents.  The announce.txt file is
@@ -5515,10 +5412,9 @@ sub validate_course_section_handler {
 # Formal Parameters:
 #    $cmd     - The command request that got us dispatched.
 #    $tail    - The tail of the command.   In this case this is a colon separated
-#               set of values that will be split into:
+#               set of words that will be split into:
 #               $inst_class  - Institutional code for the specific class section   
-#               $ownerlist   - An escaped comma-separated list of username:domain
-#                              of the course owner, and co-owner(s).
+#               $courseowner - The escaped username:domain of the course owner 
 #               $cdom        - The domain of the course from the institution's
 #                              point of view.
 #    $client  - The socket open on the client.
@@ -5543,56 +5439,6 @@ sub validate_class_access_handler {
 &register_handler("autovalidateclass_sec", \&validate_class_access_handler, 0, 1, 0);
 
 #
-#   Validate course owner or co-owners(s) access to enrollment data for all sections
-#   and crosslistings for a particular course.
-#
-#
-# Formal Parameters:
-#    $cmd     - The command request that got us dispatched.
-#    $tail    - The tail of the command.   In this case this is a colon separated
-#               set of values that will be split into:
-#               $ownerlist   - An escaped comma-separated list of username:domain
-#                              of the course owner, and co-owner(s).
-#               $cdom        - The domain of the course from the institution's
-#                              point of view.
-#               $classes     - Frozen hash of institutional course sections and
-#                              crosslistings.
-#    $client  - The socket open on the client.
-# Returns:
-#    1 - continue processing.
-#
-
-sub validate_classes_handler {
-    my ($cmd, $tail, $client) = @_;
-    my $userinput = "$cmd:$tail";
-    my ($ownerlist,$cdom,$classes) = split(/:/, $tail);
-    my $classesref = &Apache::lonnet::thaw_unescape($classes);
-    my $owners = &unescape($ownerlist);
-    my $result;
-    eval {
-        local($SIG{__DIE__})='DEFAULT';
-        my %validations;
-        my $response = &localenroll::check_instclasses($owners,$cdom,$classesref,
-                                                       \%validations);
-        if ($response eq 'ok') {
-            foreach my $key (keys(%validations)) {
-                $result .= &escape($key).'='.&Apache::lonnet::freeze_escape($validations{$key}).'&';
-            }
-            $result =~ s/\&$//;
-        } else {
-            $result = 'error';
-        }
-    };
-    if (!$@) {
-        &Reply($client, \$result, $userinput);
-    } else {
-        &Failure($client,"unknown_cmd\n",$userinput);
-    }
-    return 1;
-}
-&register_handler("autovalidateinstclasses", \&validate_classes_handler, 0, 1, 0);
-
-#
 #   Create a password for a new LON-CAPA user added by auto-enrollment.
 #   Only used for case where authentication method for new user is localauth
 #
@@ -5672,14 +5518,13 @@ sub auto_export_grades_handler {
 &register_handler("autoexportgrades", \&auto_export_grades_handler,
                   0, 1, 0);
 
-
 #   Retrieve and remove temporary files created by/during autoenrollment.
 #
 # Formal Parameters:
 #    $cmd      - The command that got us dispatched.
 #    $tail     - The tail of the command.  In our case this is a colon 
 #                separated list that will be split into:
-#                $filename - The name of the file to retrieve.
+#                $filename - The name of the file to remove.
 #                            The filename is given as a path relative to
 #                            the LonCAPA temp file directory.
 #    $client   - Socket open on the client.
@@ -5693,10 +5538,9 @@ sub retrieve_auto_file_handler {
     my ($filename)   = split(/:/, $tail);
 
     my $source = $perlvar{'lonDaemons'}.'/tmp/'.$filename;
+
     if ($filename =~m{/\.\./}) {
         &Failure($client, "refused\n", $userinput);
-    } elsif ($filename !~ /^$LONCAPA::match_domain\_$LONCAPA::match_courseid\_.+_classlist\.xml$/) {
-        &Failure($client, "refused\n", $userinput);
     } elsif ( (-e $source) && ($filename ne '') ) {
 	my $reply = '';
 	if (open(my $fh,$source)) {
@@ -5729,7 +5573,7 @@ sub crsreq_checks_handler {
     my $userinput = "$cmd:$tail";
     my $dom = $tail;
     my $result;
-    my @reqtypes = ('official','unofficial','community','textbook');
+    my @reqtypes = ('official','unofficial','community','textbook','placement');
     eval {
         local($SIG{__DIE__})='DEFAULT';
         my %validations;
@@ -6570,8 +6414,8 @@ my $wwwid=getpwnam('www');
 if ($wwwid!=$<) {
    my $emailto="$perlvar{'lonAdmEMail'},$perlvar{'lonSysEMail'}";
    my $subj="LON: $currenthostid User ID mismatch";
-   system("echo 'User ID mismatch.  lond must be run as user www.' |".
-          " mail -s '$subj' $emailto > /dev/null");
+   system("echo 'User ID mismatch.  lond must be run as user www.' |\
+ mailto $emailto -s '$subj' > /dev/null");
    exit 1;
 }
 
@@ -6774,6 +6618,9 @@ sub Debug {
 #     reply   - Text to send to client.
 #     request - Original request from client.
 #
+#NOTE $reply must be terminated by exactly *one* \n. If $reply is a reference
+#this is done automatically ($$reply must not contain any \n in this case). 
+#If $reply is a string the caller has to ensure this.
 sub Reply {
     my ($fd, $reply, $request) = @_;
     if (ref($reply)) {
@@ -7021,13 +6868,13 @@ sub make_new_child {
         &Authen::Krb5::init_context();
 
         my $no_ets;
-        if ($dist =~ /^(?:centos|rhes|scientific|oracle)(\d+)$/) {
+        if ($dist =~ /^(?:centos|rhes|scientific)(\d+)$/) {
             if ($1 >= 7) {
                 $no_ets = 1;
             }
         } elsif ($dist =~ /^suse(\d+\.\d+)$/) {
             if (($1 eq '9.3') || ($1 >= 12.2)) {
-                $no_ets = 1;
+                $no_ets = 1; 
             }
         } elsif ($dist =~ /^sles(\d+)$/) {
             if ($1 > 11) {
@@ -7039,8 +6886,8 @@ sub make_new_child {
             }
         }
         unless ($no_ets) {
-            &Authen::Krb5::init_ets();
-        }
+	    &Authen::Krb5::init_ets();
+	}
 
 	&status('Accepted connection');
 # =============================================================================
@@ -7084,12 +6931,12 @@ sub make_new_child {
 		#  If the remote is attempting a local init... give that a try:
 		#
 		(my $i, my $inittype, $clientversion) = split(/:/, $remotereq);
-                # For LON-CAPA 2.9, the  client session will have sent its LON-CAPA
-                # version when initiating the connection. For LON-CAPA 2.8 and older,
-                # the version is retrieved from the global %loncaparevs in lonnet.pm.
-                # $clientversion contains path to keyfile if $inittype eq 'local'
-                # it's overridden below in this case
-                $clientversion ||= $Apache::lonnet::loncaparevs{$clientname};
+        # For LON-CAPA 2.9, the  client session will have sent its LON-CAPA
+        # version when initiating the connection. For LON-CAPA 2.8 and older,
+        # the version is retrieved from the global %loncaparevs in lonnet.pm.            
+        # $clientversion contains path to keyfile if $inittype eq 'local'
+        # it's overridden below in this case
+        $clientversion ||= $Apache::lonnet::loncaparevs{$clientname};
 
 		# If the connection type is ssl, but I didn't get my
 		# certificate files yet, then I'll drop  back to 
@@ -7154,6 +7001,7 @@ sub make_new_child {
 				  ."Attempted insecure connection disallowed </font>");
 			close $client;
 			$clientok = 0;
+			
 		    }
 		}
 	    } else {
@@ -7162,6 +7010,7 @@ sub make_new_child {
 			 ."$clientip failed to initialize: >$remotereq< </font>");
 		&status('No init '.$clientip);
 	    }
+	    
 	} else {
 	    &logthis(
 		     "<font color='blue'>WARNING: Unknown client $clientip</font>");
@@ -7319,25 +7168,15 @@ sub password_filename {
 #    domain    - domain of the user.
 #    name      - User's name.
 #    contents  - New contents of the file.
-#    saveold   - (optional). If true save old file in a passwd.bak file.
 # Returns:
 #   0    - Failed.
 #   1    - Success.
 #
 sub rewrite_password_file {
-    my ($domain, $user, $contents, $saveold) = @_;
+    my ($domain, $user, $contents) = @_;
 
     my $file = &password_filename($domain, $user);
     if (defined $file) {
-        if ($saveold) {
-            my $bakfile = $file.'.bak';
-            if (CopyFile($file,$bakfile)) {
-                chmod(0400,$bakfile);
-                &logthis("Old password saved in passwd.bak for internally authenticated user: $user:$domain");
-            } else {
-                &logthis("Failed to save old password in passwd.bak for internally authenticated user: $user:$domain");
-            }
-        }
 	my $pf = IO::File->new(">$file");
 	if($pf) {
 	    print $pf "$contents\n";
@@ -7428,27 +7267,20 @@ sub validate_user {
                 $contentpwd = $domdefaults{'auth_arg_def'}; 
             }
         }
-    }
+    } 
     if ($howpwd ne 'nouser') {
 	if($howpwd eq "internal") { # Encrypted is in local password file.
             if (length($contentpwd) == 13) {
                 $validated = (crypt($password,$contentpwd) eq $contentpwd);
                 if ($validated) {
-                    my %domdefaults = &Apache::lonnet::get_domain_defaults($domain);
-                    if ($domdefaults{'intauth_switch'}) {
-                        my $ncpass = &hash_passwd($domain,$password);
-                        my $saveold;
-                        if ($domdefaults{'intauth_switch'} == 2) {
-                            $saveold = 1;
-                        }
-                        if (&rewrite_password_file($domain,$user,"$howpwd:$ncpass",$saveold)) {
-                            &update_passwd_history($user,$domain,$howpwd,'conversion');
-                            &logthis("Validated password hashed with bcrypt for $user:$domain");
-                        }
+                    my $ncpass = &hash_passwd($domain,$password);
+                    if (&rewrite_password_file($domain,$user,"$howpwd:$ncpass")) {
+                        &update_passwd_history($user,$domain,$howpwd,'conversion');
+                        &logthis("Validated password hashed with bcrypt for $user:$domain");
                     }
                 }
             } else {
-                $validated = &check_internal_passwd($password,$contentpwd,$domain,$user);
+                $validated = &check_internal_passwd($password,$contentpwd,$domain);
             }
 	}
 	elsif ($howpwd eq "unix") { # User is a normal unix user.
@@ -7518,35 +7350,24 @@ sub validate_user {
 }
 
 sub check_internal_passwd {
-    my ($plainpass,$stored,$domain,$user) = @_;
+    my ($plainpass,$stored,$domain) = @_;
     my (undef,$method,@rest) = split(/!/,$stored);
-    if ($method eq 'bcrypt') {
+    if ($method eq "bcrypt") {
         my $result = &hash_passwd($domain,$plainpass,@rest);
         if ($result ne $stored) {
             return 0;
         }
-        my %domdefaults = &Apache::lonnet::get_domain_defaults($domain);
-        if ($domdefaults{'intauth_check'}) {
-            # Upgrade to a larger number of rounds if necessary
-            my $defaultcost = $domdefaults{'intauth_cost'};
-            if (($defaultcost eq '') || ($defaultcost =~ /D/)) {
-                $defaultcost = 10;
-            }
-            if (int($rest[0])<int($defaultcost)) {
-                if ($domdefaults{'intauth_check'} == 1) {
-                    my $ncpass = &hash_passwd($domain,$plainpass);
-                    if (&rewrite_password_file($domain,$user,"internal:$ncpass")) {
-                        &update_passwd_history($user,$domain,'internal','update cost');
-                        &logthis("Validated password hashed with bcrypt for $user:$domain");
-                    }
-                    return 1;
-                } elsif ($domdefaults{'intauth_check'} == 2) {
-                    return 0;
-                }
-            }
-        } else {
-            return 1;
+        # Upgrade to a larger number of rounds if necessary
+        my $defaultcost;
+        my %domconfig =
+            &Apache::lonnet::get_dom('configuration',['password'],$domain);
+        if (ref($domconfig{'password'}) eq 'HASH') {
+            $defaultcost = $domconfig{'password'}{'cost'};
+        }
+        if (($defaultcost eq '') || ($defaultcost =~ /D/)) {
+            $defaultcost = 10;
         }
+        return 1 unless($rest[0]<$defaultcost);
     }
     return 0;
 }
@@ -7894,8 +7715,8 @@ sub make_passwd_file {
 	    &Debug("Creating internal auth");
 	    my $pf = IO::File->new(">$passfilename");
 	    if($pf) {
-		print $pf "internal:$ncpass\n"; 
-                &update_passwd_history($uname,$udom,$umode,$action);
+		print $pf "internal:$ncpass\n";
+                &update_passwd_history($uname,$udom,$umode,$action); 
 	    } else {
 		$result = "pass_file_failed_error";
 	    }
@@ -7976,18 +7797,8 @@ sub get_usersession_config {
     return;
 }
 
-sub get_usersearch_config {
-    my ($dom,$name) = @_;
-    my ($usersearchconf,$cached)=&Apache::lonnet::is_cached_new($name,$dom);
-    if (defined($cached)) {
-        return $usersearchconf;
-    } else {
-        my %domconfig = &Apache::lonnet::get_dom('configuration',['directorysrch'],$dom);
-        &Apache::lonnet::do_cache_new($name,$dom,$domconfig{'directorysrch'},3600);
-        return $domconfig{'directorysrch'};
-    }
-    return;
-}
+
+
 
 sub distro_and_arch {
     return $dist.':'.$arch;
@@ -8172,7 +7983,7 @@ Allow for a password to be set.
 
 Make a user.
 
-=item passwd
+=item changeuserauth
 
 Allow for authentication mechanism and password to be changed.
 
@@ -8261,6 +8072,10 @@ for each student, defined perhaps by the
 Returns usernames corresponding to IDs.  (These "IDs" are unique identifiers
 for each student, defined perhaps by the institutional Registrar.)
 
+=item iddel
+
+Deletes one or more ids in a domain's id database.
+
 =item tmpput
 
 Accept and store information in temporary space.
@@ -8317,6 +8132,8 @@ Authen::Krb5
 
 =head1 COREQUISITES
 
+none
+
 =head1 OSNAMES
 
 linux
@@ -8404,9 +8221,9 @@ or the CA's certificate in the call to l
 <error> is the textual reason this failed.  Usual reasons:
 
 =over 2
-       
+
 =item Apache config file for loncapa  incorrect:
- 
+
 one of the variables 
 lonCertificateDirectory, lonnetCertificateAuthority, or lonnetCertificate
 undefined or incorrect
@@ -8525,7 +8342,7 @@ Could not rewrite the
 internal password file for a user
 
 =item Result of password change for <user> : <result>
-                                                                     
+
 A unix password change for <user> was attempted 
 and the pipe returned <result>  
 
@@ -8554,7 +8371,7 @@ lond has been asked to exit by its clien
 client systemand <input> is the full exit command sent to the server.
 
 =item Red CRITICAL: ABNORMAL EXIT. child <pid> for server <hostname> died through a crass with this error->[<message>].
-                                                 
+
 A lond child terminated.  NOte that this termination can also occur when the
 child receives the QUIT or DIE signals.  <pid> is the process id of the child,
 <hostname> the host lond is working for, and <message> the reason the child died
@@ -8638,7 +8455,7 @@ file when sent it's USR1 signal.  That p
 assumed to be hung in some un-fixable way.
 
 =item Finished checking children                   
- 
+
 Master processs's USR1 processing is cojmplete.
 
 =item (Red) CRITICAL: ------- Starting ------            
@@ -8652,7 +8469,7 @@ Started a new child process for <client>
 connected to the child.  This was as a result of a TCP/IP connection from a client.
 
 =item Unable to determine who caller was, getpeername returned nothing
-                                                  
+
 In child process initialization.  either getpeername returned undef or
 a zero sized object was returned.  Processing continues, but in my opinion,
 this should be cause for the child to exit.
@@ -8663,7 +8480,7 @@ In child process initialization.  The pe
 The client address is stored as "Unavailable" and processing continues.
 
 =item (Yellow) INFO: Connection <ip> <name> connection type = <type>
-                                                  
+
 In child initialization.  A good connectionw as received from <ip>.
 
 =over 2
@@ -8713,7 +8530,7 @@ The client (<client> is the peer's name
 negotiated an SSL connection with this child process.
 
 =item (Green) Successful insecure authentication with <client>
-                                                   
+
 
 The client has successfully negotiated an  insecure connection withthe child process.