--- loncom/cgi/metadata_keywords.pl	2003/02/03 18:03:52	1.5
+++ loncom/cgi/metadata_keywords.pl	2008/12/25 01:56:03	1.8
@@ -1,13 +1,30 @@
 #!/usr/bin/perl
+# Gets keywords from metadata database.
+# $Id: metadata_keywords.pl,v 1.8 2008/12/25 01:56:03 raeburn Exp $
 #
-# The LearningOnline Network with CAPA
+# Copyright Michigan State University Board of Trustees
 #
-# Gets keywords from metadata database.
+# This file is part of the LearningOnline Network with CAPA (LON-CAPA).
+#
+# LON-CAPA is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation; either version 2 of the License, or
+# (at your option) any later version.
 #
-# YEAR=2001
+# 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.
 #
-# YEAR=2002
+# You should have received a copy of the GNU General Public License
+# along with LON-CAPA; if not, write to the Free Software
+# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 #
+# /home/httpd/html/adm/gpl.txt
+#
+# http://www.lon-capa.org/
+#
+
 
 ###############################################################################
 ##                                                                           ##
@@ -44,49 +61,74 @@
 
 # ------------------------------------------------- Modules used by this script
 
-use lib '/home/httpd/lib/perl/';
-use LONCAPA::Configuration;
 
+$|=1;
 use strict;
 use DBI;
+use lib '/home/httpd/lib/perl/';
+use Apache::lonlocal;
+use LONCAPA::Configuration;
+use LONCAPA::loncgi;
+use LONCAPA::lonauthcgi;
 
 # ---------------------------- Print MIME Content-type and other initialization
-$|=1;
 print 'Content-type: text/plain'."\n\n";
 
+&main();
+
+sub main {
+    if (!&LONCAPA::lonauthcgi::check_ipbased_access('metadatakeywords')) {
+        if (!&LONCAPA::loncgi::check_cookie_and_load_env()) {
+            &Apache::lonlocal::get_language_handle();
+            print(&LONCAPA::loncgi::missing_cookie_msg());
+            return;
+        }
+
+        if (!&LONCAPA::lonauthcgi::can_view('metadata_keywords')) {
+            &Apache::lonlocal::get_language_handle();
+            print(&LONCAPA::lonauthcgi::unauthorized_msg('metadata_keywords'));
+            return;
+        }
+    }
+
+    &Apache::lonlocal::get_language_handle();
+
 # --- Make sure that database can be accessed and that this is a library server
 # library server test
 
 # By default, loncapa_apache.conf is also read by the read_conf subroutine.
-my $perlvarref=LONCAPA::Configuration::read_conf('loncapa.conf');
-my %perlvar=%{$perlvarref};
-undef($perlvarref);
-
-unless ($perlvar{'lonRole'} eq 'library') {
-    print "This can only be run on a library server!\n";
-    exit;
-}
+    my $perlvarref=LONCAPA::Configuration::read_conf('loncapa.conf');
+    my %perlvar=%{$perlvarref};
+    undef($perlvarref);
+
+    unless ($perlvar{'lonRole'} eq 'library') {
+         print(&Apache::lonlocal::mt('This can only be run on a library server!)."\n");
+         return;
+    }
+
 # database test
-my $dbh;
-{
-    unless (
-	    $dbh = DBI->connect("DBI:mysql:loncapa","www",
-				$perlvar{'lonSqlAccess'},
-				{ RaiseError =>0,PrintError=>0})
-	    ) { 
-	print "Cannot connect to database!\n";
-	exit;
+    my $dbh;
+    {
+        unless (
+    	        $dbh = DBI->connect("DBI:mysql:loncapa","www",
+				    $perlvar{'lonSqlAccess'},
+				    { RaiseError =>0,PrintError=>0})
+	       ) { 
+	    print "Cannot connect to database!\n";
+	    return;
+        }
     }
-}
-%perlvar=(); # undefine it
+    %perlvar=(); # undefine it
 
 # ------------------------ Loop through database records and print out keywords
-my $sth=$dbh->prepare("select * from metadata");
-$sth->execute();
-my @row;
-while (@row=$sth->fetchrow_array) {
-    print $row[4]."\n";
-}
+    my $sth=$dbh->prepare("select * from metadata");
+    $sth->execute();
+    my @row;
+    while (@row=$sth->fetchrow_array) {
+        print $row[4]."\n";
+    }
 
 # --------------------------------------------------- Close database connection
-$dbh->disconnect();
+    $dbh->disconnect();
+    return;
+}