--- loncom/loncron	2021/02/02 21:17:47	1.103.2.11
+++ loncom/loncron	2021/02/02 20:53:05	1.127
@@ -2,7 +2,7 @@
 
 # Housekeeping program, started by cron, loncontrol and loncron.pl
 #
-# $Id: loncron,v 1.103.2.11 2021/02/02 21:17:47 raeburn Exp $
+# $Id: loncron,v 1.127 2021/02/02 20:53:05 raeburn Exp $
 #
 # Copyright Michigan State University Board of Trustees
 #
@@ -34,19 +34,20 @@ use lib '/home/httpd/lib/perl/';
 use LONCAPA::Configuration;
 use LONCAPA::Checksumming;
 use LONCAPA;
+use LONCAPA::LWPReq;
 use Apache::lonnet;
 use Apache::loncommon;
 
-use LWP::UserAgent();
-use HTTP::Request();
 use IO::File;
 use IO::Socket;
 use HTML::Entities;
 use Getopt::Long;
-use GDBM_File qw(GDBM_READER);
-use Storable qw(thaw nfreeze);
+use GDBM_File;
+use Storable qw(thaw);
 use File::ReadBackwards;
 use File::Copy;
+use GDBM_File qw(GDBM_READER);
+use Storable qw(thaw nfreeze);
 use Sys::Hostname::FQDN();
 
 #globals
@@ -174,6 +175,9 @@ sub checkon_daemon {
 	&log($fh,unlink($pidfile).' - '.
 	    `killall -9 $kadaemon 2>&1`.
 	    '</font><br />');
+        if ($kadaemon eq 'loncnew') {
+            &clean_lonc_childpids();
+        }
 	&log($fh,"<h3>$daemon not running, trying to start</h3>");
 
 	if (&start_daemon($fh,$daemon,$pidfile,$args)) {
@@ -212,8 +216,8 @@ sub checkon_daemon {
 	            close (DFH);
                 }
 	        &log($fh,"</pre></p>");
-	    }
-        }
+            }
+	}
     }
 
     my $fname="$perlvar{'lonDaemons'}/logs/$daemon.log";
@@ -247,7 +251,7 @@ sub log_machine_info {
     open (LOADAVGH,"/proc/loadavg");
     my $loadavg=<LOADAVGH>;
     close (LOADAVGH);
-
+ 
     &log($fh,"<tt>$loadavg</tt>");
 
     my @parts=split(/\s+/,$loadavg);
@@ -310,7 +314,7 @@ sub start_logging {
     my %simplestatus=();
     my $now=time;
     my $date=localtime($now);
-
+ 
 
     &log($fh,(<<ENDHEADERS));
 <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
@@ -601,6 +605,34 @@ sub clean_webDAV_sessionIDs {
     }
 }
 
+# ------------------------------------------------------------ clean out ltiIDs
+
+sub clean_ltiIDs {
+    my ($fh)=@_;
+    &log($fh,'<hr /><a name="ltisessions" /><h2>LTI Session Pointers</h2>');
+    my $cleaned=0;
+    my $active=0;
+    if (-d $perlvar{'ltiIDsDir'}) {
+        while (my $fname=<$perlvar{'ltiIDsDir'}/*>) {
+            my ($dev,$ino,$mode,$nlink,
+                $uid,$gid,$rdev,$size,
+                $atime,$mtime,$ctime,
+                $blksize,$blocks)=stat($fname);
+            my $now=time;
+            my $since=$now-$mtime;
+            if ($since>$perlvar{'lonExpire'}) {
+                $cleaned++;
+                &log($fh,"Unlinking $fname<br />");
+                unlink("$fname");
+            } else {
+                $active++;
+            }
+        }
+    }
+    &log($fh,"<p>Cleaned up ".$cleaned." old LTI session pointers.</p>");
+    &log($fh,"<h3>$active unexpired LTI session pointers</h3>");
+}
+
 # ----------------------------------------------------------- clean out sockets
 sub clean_sockets {
     my ($fh)=@_;
@@ -778,14 +810,14 @@ sub check_delayed_msg {
     my $dfh=IO::File->new("$perlvar{'lonDaemons'}/logs/lonnet.perm.log","r");
     if (defined($dfh)) {
         while (my $line=<$dfh>) {
-	    my ($time,$sdf,$rest)=split(/:/,$line,3);
+            my ($time,$sdf,$rest)=split(/:/,$line,3);
             if ($time < 1541185772) {
                 $checkbackwards = 1;
             }
             last;
         }
         undef $dfh;
-    }
+    } 
 
     if ($checkbackwards) {
         if (tie *BW, 'File::ReadBackwards', "$perlvar{'lonDaemons'}/logs/lonnet.perm.log") {
@@ -1150,6 +1182,91 @@ sub write_hostips {
     return;
 }
 
+sub clean_nosslverify {
+    my ($fh) = @_;
+    my %unlinked;
+    if (-d "$perlvar{'lonSockDir'}/nosslverify") {
+        if (opendir(my $dh,"$perlvar{'lonSockDir'}/nosslverify")) {
+            while (my $fname=readdir($dh)) {
+                next if ($fname =~ /^\.+$/);
+                if (unlink("/home/httpd/sockets/nosslverify/$fname")) {
+                    &log($fh,"Unlinking $fname<br />");
+                    $unlinked{$fname} = 1;
+                }
+            }
+            closedir($dh);
+        }
+    }
+    &log($fh,"<p>Removed ".scalar(keys(%unlinked))." nosslverify clients</p>");
+    return %unlinked;
+}
+sub clean_lonc_childpids {
+    my $childpiddir = "$perlvar{'lonDocRoot'}/lon-status/loncchld";
+    if (-d $childpiddir) {
+        if (opendir(my $dh,$childpiddir)) {
+            while (my $fname=readdir($dh)) {
+                next if ($fname =~ /^\.+$/);
+                unlink("$childpiddir/$fname");
+            }
+            closedir($dh);
+        }
+    }
+}
+
+sub write_connection_config {
+    my ($domconf,%connectssl,%changes);
+    $domconf = &get_domain_config();
+    if (ref($domconf) eq 'HASH') {
+        if (ref($domconf->{'ssl'}) eq 'HASH') {
+            foreach my $connect ('connto','connfrom') {
+                if (ref($domconf->{'ssl'}->{$connect}) eq 'HASH') {
+                    my ($sslreq,$sslnoreq,$currsetting);
+                    my %contypes;
+                    foreach my $type ('dom','intdom','other') {
+                        $connectssl{$connect.'_'.$type} = $domconf->{'ssl'}->{$connect}->{$type};
+                    }
+                }
+            }
+        }
+        if (keys(%connectssl)) {
+            my %currconf; 
+            if (open(my $fh,'<',"$perlvar{'lonTabDir'}/connectionrules.tab")) {
+                while (my $line = <$fh>) {
+                    chomp($line);
+                    my ($name,$value) = split(/=/,$line);
+                    if ($value =~ /^(?:no|yes|req)$/) {
+                        if ($name =~ /^conn(to|from)_(dom|intdom|other)$/) {
+                            $currconf{$name} = $value;
+                        }
+                    }
+                }
+                close($fh);
+            }
+            if (open(my $fh,'>',"$perlvar{'lonTabDir'}/connectionrules.tab")) {
+                my $count = 0;
+                foreach my $key (sort(keys(%connectssl))) { 
+                    print $fh "$key=$connectssl{$key}\n";
+                    if (exists($currconf{$key})) {
+                        unless ($currconf{$key} eq $connectssl{$key}) {
+                            $changes{$key} = 1;
+                        }
+                    } else {
+                        $changes{$key} = 1;
+                    }
+                    $count ++;
+                }
+                close($fh);
+                print "Completed writing SSL options for lonc/lond for $count items.\n";
+            }
+        } else {
+            print "Writing of SSL options skipped - no connection rules in domain configuration.\n";
+        }
+    } else {
+        print "Retrieval of SSL options for lonc/lond skipped - no configuration data available for domain.\n";
+    }
+    return %changes;
+}
+
 sub get_domain_config {
     my ($dom,$primlibserv,$isprimary,$url,%confhash);
     $dom = $perlvar{'lonDefDomain'};
@@ -1183,10 +1300,8 @@ sub get_domain_config {
             }
         }
     } else {
-        my $ua=new LWP::UserAgent;
-        $ua->timeout(5);
         my $request=new HTTP::Request('GET',$url);
-        my $response=$ua->request($request);
+        my $response=&LONCAPA::LWPReq::makerequest($primlibserv,$request,'',\%perlvar,5);
         unless ($response->is_error()) {
             my $content = $response->content;
             if ($content) {
@@ -1207,6 +1322,121 @@ sub get_domain_config {
     return \%confhash;
 }
 
+sub write_hosttypes {
+    my %intdom = &Apache::lonnet::all_host_intdom();
+    my %hostdom = &Apache::lonnet::all_host_domain();
+    my $dom = $hostdom{$perlvar{'lonHostID'}};
+    my $internetdom = $intdom{$perlvar{'lonHostID'}};
+    my %changes;
+    if (($dom ne '') && ($internetdom ne '')) {
+        if (keys(%hostdom)) {
+            my %currhosttypes;
+            if (open(my $fh,'<',"$perlvar{'lonTabDir'}/hosttypes.tab")) {
+                while (my $line = <$fh>) {
+                    chomp($line);
+                    my ($name,$value) = split(/:/,$line);
+                    if (($name ne '') && ($value =~ /^(dom|intdom|other)$/)) {
+                        $currhosttypes{$name} = $value;
+                    }
+                }
+                close($fh);
+            }
+            if (open(my $fh,'>',"$perlvar{'lonTabDir'}/hosttypes.tab")) {
+                my $count = 0;
+                foreach my $lonid (sort(keys(%hostdom))) {
+                    my $type = 'other';
+                    if ($hostdom{$lonid} eq $dom) {
+                        $type = 'dom';
+                    } elsif ($intdom{$lonid} eq $internetdom) {
+                        $type = 'intdom';
+                    }
+                    print $fh "$lonid:$type\n";
+                    if (exists($currhosttypes{$lonid})) {
+                        if ($type ne $currhosttypes{$lonid}) {
+                            $changes{$lonid} = 1;
+                        }
+                    } else {
+                        $changes{$lonid} = 1;
+                    }
+                    $count ++;
+                }
+                close($fh);
+                print "Completed writing host type data for $count hosts.\n";
+            }
+        } else {
+            print "Writing of host types skipped - no hosts found.\n";
+        }
+    } else {
+        print "Writing of host types skipped - could not determine this host's LON-CAPA domain or 'internet' domain.\n";
+    }
+    return %changes;
+}
+
+sub update_revocation_list {
+    my ($result,$changed) = &Apache::lonnet::fetch_crl_pemfile();
+    if ($result eq 'ok') {
+        print "Certificate Revocation List (from CA) updated.\n";
+    } else {
+        print "Certificate Revocation List from (CA) not updated.\n";
+    }
+    return $changed;
+}
+
+sub reset_nosslverify_pids {
+    my ($fh,%sslrem) = @_;
+    &checkon_daemon($fh,'lond',40000,'USR2');
+    my $loncpidfile="$perlvar{'lonDaemons'}/logs/lonc.pid";
+    my $loncppid;
+    if ((-e $loncpidfile) && (open(my $pfh,'<',$loncpidfile))) {
+        $loncppid=<$pfh>;
+        chomp($loncppid);
+        close($pfh);
+        if ($loncppid =~ /^\d+$/) {
+            my %pids_by_host;
+            my $docdir = $perlvar{'lonDocRoot'};
+            if (-d "$docdir/lon-status/loncchld") {
+                if (opendir(my $dh,"$docdir/lon-status/loncchld")) {
+                    while (my $file = readdir($dh)) {
+                        next if ($file =~ /^\./);
+                        if (open(my $fh,'<',"$docdir/lon-status/loncchld/$file")) {
+                            my $record = <$fh>;
+                            chomp($record);
+                            close($fh);
+                            my ($remotehost,$authmode) = split(/:/,$record);
+                            $pids_by_host{$remotehost}{$authmode}{$file} = 1;
+                        }
+                    }
+                    closedir($dh);
+                    if (keys(%pids_by_host)) {
+                        foreach my $host (keys(%pids_by_host)) {
+                            if ($sslrem{$host}) {
+                                if (ref($pids_by_host{$host}) eq 'HASH') {
+                                    if (ref($pids_by_host{$host}{'insecure'}) eq 'HASH') {
+                                        if (keys(%{$pids_by_host{$host}{'insecure'}})) {
+                                            foreach my $pid (keys(%{$pids_by_host{$host}{'insecure'}})) {
+                                                if (open(PIPE,"ps -o ppid= -p $pid |")) {
+                                                    my $ppid = <PIPE>;
+                                                    chomp($ppid);
+                                                    close(PIPE);
+                                                    $ppid =~ s/(^\s+|\s+$)//g;
+                                                    if (($ppid == $loncppid) && (kill 0 => $pid)) {
+                                                        kill QUIT => $pid;
+                                                    }
+                                                }
+                                            }
+                                        }
+                                    }
+                                }
+                            }
+                        }
+                    }
+                }
+            }
+        }
+    }
+    return;
+}
+
 sub get_permcount_settings {
     my ($domconf) = @_;
     my ($defaults,$names) = &Apache::loncommon::lon_status_items();
@@ -1432,6 +1662,7 @@ sub main () {
 	&clean_lonIDs($fh);
         &clean_balanceIDs($fh);
         &clean_webDAV_sessionIDs($fh);
+        &clean_ltiIDs($fh);
 	&check_httpd_logs($fh);
 	&rotate_lonnet_logs($fh);
 	&rotate_other_logs($fh);
@@ -1447,6 +1678,10 @@ sub main () {
         &checkon_daemon($fh,'lonr',40000);
     }
     if ($justreload) {
+        &clean_nosslverify($fh);
+        &write_connection_config();
+        &write_hosttypes();
+        &update_revocation_list(); 
 	&checkon_daemon($fh,'lond',40000,'USR2');
 	&checkon_daemon($fh,'lonc',40000,'USR2');
     }
@@ -1458,12 +1693,21 @@ sub main () {
         my ($threshold,$sysmail,$reportstatus,$weightsref,$exclusionsref) =
             &get_permcount_settings($domconf);
 	&check_delayed_msg($fh,$weightsref,$exclusionsref);
-	&finish_logging($fh,$weightsref);
-	&log_simplestatus();
         &write_loncaparevs();
         &write_serverhomeIDs();
 	&write_checksums();
         &write_hostips();
+        my %sslrem = &clean_nosslverify($fh);
+        my %conchgs = &write_connection_config();
+        my %hosttypechgs = &write_hosttypes();
+        my $hadcrlchg = &update_revocation_list();
+        if ((keys(%conchgs) > 0) || (keys(%hosttypechgs) > 0) ||
+            $hadcrlchg || (keys(%sslrem) > 0)) {
+            &checkon_daemon($fh,'lond',40000,'USR2');
+            &reset_nosslverify_pids($fh,%sslrem);
+        }
+        &finish_logging($fh,$weightsref);
+        &log_simplestatus();
         if ($totalcount>$threshold && !$noemail) { &send_mail($sysmail,$reportstatus); }
     }
 }