--- loncom/Lond.pm	2015/05/22 21:14:59	1.8
+++ loncom/Lond.pm	2018/08/09 14:04:30	1.11
@@ -1,6 +1,6 @@
 # The LearningOnline Network
 #
-# $Id: Lond.pm,v 1.8 2015/05/22 21:14:59 raeburn Exp $
+# $Id: Lond.pm,v 1.11 2018/08/09 14:04:30 raeburn Exp $
 #
 # Copyright Michigan State University Board of Trustees
 #
@@ -37,6 +37,7 @@ use lib '/home/httpd/lib/perl/';
 use LONCAPA;
 use Apache::lonnet;
 use GDBM_File;
+use Crypt::OpenSSL::X509;
 
 
 sub dump_with_regexp {
@@ -782,6 +783,118 @@ sub dump_profile_database {
     return $qresult;
 }
 
+sub is_course {
+    my ($cdom,$cnum) = @_;
+
+    return unless (($cdom =~ /^$LONCAPA::match_domain$/) &&
+                   ($cnum =~ /^$LONCAPA::match_courseid$/));
+    my $hashid = $cdom.':'.$cnum;
+    my ($iscourse,$cached) =
+        &Apache::lonnet::is_cached_new('iscourse',$hashid);
+    unless (defined($cached)) {
+        my $hashref =
+            &tie_domain_hash($cdom, "nohist_courseids", &GDBM_WRCREAT());
+        if (ref($hashref) eq 'HASH') {
+            my $esc_key = &escape($cdom.'_'.$cnum);
+            if (exists($hashref->{$esc_key})) {
+                $iscourse = 1;
+            } else {
+                $iscourse = 0;
+            }
+            &Apache::lonnet::do_cache_new('iscourse',$hashid,$iscourse,3600);
+            unless (&untie_domain_hash($hashref)) {
+                &logthis("Failed to untie tied hash for nohist_courseids.db for $cdom");
+            }
+        } else {
+            &logthis("Failed to tie hash for nohist_courseids.db for $cdom");
+        }
+    }
+    return $iscourse;
+}
+
+sub server_certs {
+    my ($perlvar) = @_;
+    my %pemfiles = (
+                     key      => 'lonnetPrivateKey',
+                     host     => 'lonnetCertificate',
+                     hostname => 'lonnetHostnameCertificate',
+                     ca       => 'lonnetCertificateAuthority',
+                   );
+    my (%md5hash,%info);
+    if (ref($perlvar) eq 'HASH') {
+        my $certsdir = $perlvar->{'lonCertificateDirectory'};
+        if (-d $certsdir) {
+            foreach my $key (keys(%pemfiles)) {
+                if ($perlvar->{$pemfiles{$key}}) {
+                    my $file = $certsdir.'/'.$perlvar->{$pemfiles{$key}};
+                    if (-e $file) {
+                        if ($key eq 'key') {
+                            if (open(PIPE,"openssl rsa -noout -in $file -check |")) {
+                                my $check = <PIPE>;
+                                close(PIPE);
+                                chomp($check);
+                                $info{$key}{'status'} = $check;
+                            }
+                            if (open(PIPE,"openssl rsa -noout -modulus -in $file | openssl md5 |")) {
+                                $md5hash{$key} = <PIPE>;
+                                close(PIPE);
+                            }
+                        } else {
+                            if ($key eq 'ca') {
+                                if (open(PIPE,"openssl verify -CAfile $file $file |")) {
+                                    my $check = <PIPE>;
+                                    close(PIPE);
+                                    chomp($check);
+                                    if ($check eq "$file: OK") {
+                                        $info{$key}{'status'} = 'ok';
+                                    } else {
+                                        $check =~ s/^\Q$file\E\:?\s*//;
+                                        $info{$key}{'status'} = $check;
+                                    }
+                                }
+                            } else {
+                                if (open(PIPE,"openssl x509 -noout -modulus -in $file | openssl md5 |")) {
+                                    $md5hash{$key} = <PIPE>;
+                                    close(PIPE);
+                                }
+                            }
+                            my $x509 = Crypt::OpenSSL::X509->new_from_file($file);
+                            my @items = split(/,\s+/,$x509->subject());
+                            foreach my $item (@items) {
+                                my ($name,$value) = split(/=/,$item);
+                                if ($name eq 'CN') {
+                                    $info{$key}{'cn'} = $value;
+                                }
+                            }
+                            $info{$key}{'start'} = $x509->notBefore();
+                            $info{$key}{'end'} = $x509->notAfter();
+                            $info{$key}{'alg'} = $x509->sig_alg_name();
+                            $info{$key}{'size'} = $x509->bit_length();
+                            $info{$key}{'email'} = $x509->email();
+                        }
+                    }
+                }
+            }
+        }
+    }
+    foreach my $key ('host','hostname') {
+        if ($md5hash{$key}) {
+            if ($md5hash{$key} eq $md5hash{'key'}) {
+                $info{$key}{'status'} = 'ok';
+            } elsif ($info{'key'}{'status'} =~ /ok/) {
+                $info{$key}{'status'} = 'otherkey';
+            } else {
+                $info{$key}{'status'} = 'nokey';
+            }
+        }
+    }
+    my $result;
+    foreach my $key (keys(%info)) {
+        $result .= &escape($key).'='.&Apache::lonnet::freeze_escape($info{$key}).'&';
+    }
+    $result =~ s/\&$//;
+    return $result;
+}
 
 1;