--- loncom/lonnet/perl/lonnet.pm	2014/06/25 18:44:10	1.1172.2.52
+++ loncom/lonnet/perl/lonnet.pm	2014/10/24 00:37:15	1.1172.2.56
@@ -1,7 +1,7 @@
 # The LearningOnline Network
 # TCP networking package
 #
-# $Id: lonnet.pm,v 1.1172.2.52 2014/06/25 18:44:10 raeburn Exp $
+# $Id: lonnet.pm,v 1.1172.2.56 2014/10/24 00:37:15 raeburn Exp $
 #
 # Copyright Michigan State University Board of Trustees
 #
@@ -5704,18 +5704,17 @@ sub dump {
     if (!$uname) { $uname=$env{'user.name'}; }
     my $uhome=&homeserver($uname,$udomain);
 
-    my $reply;
+    if ($regexp) {
+        $regexp=&escape($regexp);
+    } else {
+        $regexp='.';
+    }
     if (grep { $_ eq $uhome } &current_machine_ids()) {
         # user is hosted on this machine
-        $reply = LONCAPA::Lond::dump_with_regexp(join(':', ($udomain,
+        my $reply = LONCAPA::Lond::dump_with_regexp(join(':', ($udomain,
                     $uname, $namespace, $regexp, $range)), $perlvar{'lonVersion'});
         return %{&unserialize($reply, $escapedkeys)};
     }
-    if ($regexp) {
-	$regexp=&escape($regexp);
-    } else {
-	$regexp='.';
-    }
     my $rep=&reply("dump:$udomain:$uname:$namespace:$regexp:$range",$uhome);
     my @pairs=split(/\&/,$rep);
     my %returnhash=();
@@ -6064,10 +6063,15 @@ sub get_timebased_id {
         my %inuse = &Apache::lonnet::dump('nohist_'.$namespace,$cdom,$cnum,$prefix);
         my $id = time;
         $newid = $id;
+        if ($idtype eq 'addcode') {
+            $newid .= &sixnum_code();
+        }
         my $idtries = 0;
         while (exists($inuse{$prefix."\0".$newid}) && $idtries < $maxtries) {
             if ($idtype eq 'concat') {
                 $newid = $id.$idtries;
+            } elsif ($idtype eq 'addcode') {
+                $newid = $newid.&sixnum_code();
             } else {
                 $newid ++;
             }
@@ -6084,6 +6088,7 @@ sub get_timebased_id {
                 $error = 'error saving new item: '.$putresult;
             }
         } else {
+             undef($newid);
              $error = ('error: no unique suffix available for the new item ');
         }
 #  remove lock
@@ -6096,6 +6101,14 @@ sub get_timebased_id {
     return ($newid,$dellock,$error);
 }
 
+sub sixnum_code {
+    my $code;
+    for (0..6) {
+        $code .= int( rand(9) );
+    }
+    return $code;
+}
+
 # -------------------------------------------------- portfolio access checking
 
 sub portfolio_access {
@@ -10930,14 +10943,10 @@ sub deversion {
 
 sub symbread {
     my ($thisfn,$donotrecurse)=@_;
-    my $cache_str;
-    if ($thisfn ne '') {
-        $cache_str='request.symbread.cached.'.$thisfn;
-        if ($env{$cache_str} ne '') {
-            return $env{$cache_str};
-        }
-   } else {
+    my $cache_str='request.symbread.cached.'.$thisfn;
+    if (defined($env{$cache_str})) { return $env{$cache_str}; }
 # no filename provided? try from environment
+    unless ($thisfn) {
         if ($env{'request.symb'}) {
             return $env{$cache_str}=&symbclean($env{'request.symb'});
         }
@@ -11905,8 +11914,22 @@ sub get_dns {
 # ------------------------------------------------------Get DNS checksums file
 sub parse_dns_checksums_tab {
     my ($lines,$hashref) = @_;
-    my $machine_dom = &Apache::lonnet::host_domain($perlvar{'lonHostID'});
+    my $lonhost = $perlvar{'lonHostID'};
+    my $machine_dom = &Apache::lonnet::host_domain($lonhost);
     my $loncaparev = &get_server_loncaparev($machine_dom);
+    my $distro = (split(/\:/,&get_server_distarch($lonhost)))[0];
+    my $webconfdir = '/etc/httpd/conf';
+    if ($distro =~ /^(ubuntu|debian)(\d+)$/) {
+        $webconfdir = '/etc/apache2';
+    } elsif ($distro =~ /^sles(\d+)$/) {
+        if ($1 >= 10) {
+            $webconfdir = '/etc/apache2';
+        }
+    } elsif ($distro =~ /^suse(\d+\.\d+)$/) {
+        if ($1 >= 10.0) {
+            $webconfdir = '/etc/apache2';
+        }
+    }
     my ($release,$timestamp) = split(/\-/,$loncaparev);
     my (%chksum,%revnum);
     if (ref($lines) eq 'ARRAY') {
@@ -11915,6 +11938,11 @@ sub parse_dns_checksums_tab {
         if ($version eq $release) {
             foreach my $line (@{$lines}) {
                 my ($file,$version,$shasum) = split(/,/,$line);
+                if ($file =~ m{^/etc/httpd/conf}) {
+                    if ($webconfdir eq '/etc/apache2') {
+                        $file =~ s{^\Q/etc/httpd/conf/\E}{$webconfdir/};
+                    }
+                }
                 $chksum{$file} = $shasum;
                 $revnum{$file} = $version;
             }