--- loncom/publisher/lonretrieve.pm	2001/06/23 18:26:40	1.13
+++ loncom/publisher/lonretrieve.pm	2001/12/04 15:34:57	1.15
@@ -1,6 +1,31 @@
 # The LearningOnline Network with CAPA
 # Handler to retrieve an old version of a file
 #
+# $Id: lonretrieve.pm,v 1.15 2001/12/04 15:34:57 albertel Exp $
+#
+# Copyright Michigan State University Board of Trustees
+#
+# 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.
+#
+# 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.
+#
+# 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/
+#
+#
 # (Publication Handler
 # 
 # (TeX Content Handler
@@ -11,7 +36,7 @@
 # 03/23 Guy Albertelli
 # 03/24,03/29 Gerd Kortemeyer)
 #
-# 03/31,04/03,05/02,05/09,06/23 Gerd Kortemeyer
+# 03/31,04/03,05/02,05/09,06/23,08/20 Gerd Kortemeyer
 
 package Apache::lonretrieve;
 
@@ -139,6 +164,21 @@ sub handler {
 
   my $fn;
 
+
+# Get query string for limited number of parameters
+
+    map {
+       my ($name, $value) = split(/=/,$_);
+       $value =~ tr/+/ /;
+       $value =~ s/%([a-fA-F0-9][a-fA-F0-9])/pack("C",hex($1))/eg;
+       if ($name eq 'filename') {
+           unless ($ENV{'form.'.$name}) {
+              $ENV{'form.'.$name}=$value;
+	   }
+       }
+    } (split(/&/,$ENV{'QUERY_STRING'}));
+
+
   if ($ENV{'form.filename'}) {
       $fn=$ENV{'form.filename'};
       $fn=~s/^http\:\/\/[^\/]+//;