--- loncom/lonnet/perl/lonnet.pm	2005/12/22 20:56:28	1.687
+++ loncom/lonnet/perl/lonnet.pm	2006/01/26 07:14:39	1.703
@@ -1,7 +1,7 @@
 # The LearningOnline Network
 # TCP networking package
 #
-# $Id: lonnet.pm,v 1.687 2005/12/22 20:56:28 albertel Exp $
+# $Id: lonnet.pm,v 1.703 2006/01/26 07:14:39 albertel Exp $
 #
 # Copyright Michigan State University Board of Trustees
 #
@@ -271,7 +271,7 @@ sub transfer_profile_to_env {
     my %Remove;
     for ($envi=0;$envi<=$#profile;$envi++) {
 	chomp($profile[$envi]);
-	my ($envname,$envvalue)=split(/=/,$profile[$envi]);
+	my ($envname,$envvalue)=split(/=/,$profile[$envi],2);
 	$env{$envname} = $envvalue;
         if (my ($key,$time) = ($envname =~ /^(cgi\.(\d+)_\d+\.)/)) {
             if ($time < time-300) {
@@ -289,14 +289,14 @@ sub transfer_profile_to_env {
 
 sub appenv {
     my %newenv=@_;
-    foreach (keys %newenv) {
-	if (($newenv{$_}=~/^user\.role/) || ($newenv{$_}=~/^user\.priv/)) {
+    foreach my $key (keys(%newenv)) {
+	if (($newenv{$key}=~/^user\.role/) || ($newenv{$key}=~/^user\.priv/)) {
             &logthis("<font color=\"blue\">WARNING: ".
-                "Attempt to modify environment ".$_." to ".$newenv{$_}
+                "Attempt to modify environment ".$key." to ".$newenv{$key}
                 .'</font>');
-	    delete($newenv{$_});
+	    delete($newenv{$key});
         } else {
-            $env{$_}=$newenv{$_};
+            $env{$key}=$newenv{$key};
         }
     }
 
@@ -323,7 +323,7 @@ sub appenv {
     for (my $i=0; $i<=$#oldenv; $i++) {
         chomp($oldenv[$i]);
         if ($oldenv[$i] ne '') {
-	    my ($name,$value)=split(/=/,$oldenv[$i]);
+	    my ($name,$value)=split(/=/,$oldenv[$i],2);
 	    unless (defined($newenv{$name})) {
 		$newenv{$name}=$value;
 	    }
@@ -380,12 +380,12 @@ sub delenv {
 	    close($fh);
 	    return 'error: '.$!;
 	}
-	foreach (@oldenv) {
-	    if ($_=~/^$delthis/) { 
-                my ($key,undef) = split('=',$_);
+	foreach my $cur_key (@oldenv) {
+	    if ($cur_key=~/^$delthis/) { 
+                my ($key,undef) = split('=',$cur_key,2);
                 delete($env{$key});
             } else {
-                print $fh $_; 
+                print $fh $cur_key; 
             }
 	}
 	close($fh);
@@ -1358,8 +1358,16 @@ sub finishuserfileupload {
     }
 # Save the file
     {
-	open(FH,'>'.$filepath.'/'.$file);
-	print FH $env{'form.'.$formname};
+	if (!open(FH,'>'.$filepath.'/'.$file)) {
+	    &logthis('Failed to create '.$filepath.'/'.$file);
+	    print STDERR ('Failed to create '.$filepath.'/'.$file."\n");
+	    return '/adm/notfound.html';
+	}
+	if (!print FH ($env{'form.'.$formname})) {
+	    &logthis('Failed to write to '.$filepath.'/'.$file);
+	    print STDERR ('Failed to write to '.$filepath.'/'.$file."\n");
+	    return '/adm/notfound.html';
+	}
 	close(FH);
     }
     if ($parser eq 'parse') {
@@ -2785,7 +2793,7 @@ sub del {
 # -------------------------------------------------------------- dump interface
 
 sub dump {
-   my ($namespace,$udomain,$uname,$regexp)=@_;
+   my ($namespace,$udomain,$uname,$regexp,$range)=@_;
    if (!$udomain) { $udomain=$env{'user.domain'}; }
    if (!$uname) { $uname=$env{'user.name'}; }
    my $uhome=&homeserver($uname,$udomain);
@@ -2794,11 +2802,11 @@ sub dump {
    } else {
        $regexp='.';
    }
-   my $rep=reply("dump:$udomain:$uname:$namespace:$regexp",$uhome);
+   my $rep=reply("dump:$udomain:$uname:$namespace:$regexp:$range",$uhome);
    my @pairs=split(/\&/,$rep);
    my %returnhash=();
    foreach (@pairs) {
-      my ($key,$value)=split(/=/,$_);
+      my ($key,$value)=split(/=/,$_,2);
       $returnhash{unescape($key)}=&thaw_unescape($value);
    }
    return %returnhash;
@@ -3017,8 +3025,9 @@ sub tmpput {
 
 # ------------------------------------------------------------ tmpget interface
 sub tmpget {
-    my ($token)=@_;
-    my $rep=&reply("tmpget:$token",$perlvar{'lonHostID'});
+    my ($token,$server)=@_;
+    if (!defined($server)) { $server = $perlvar{'lonHostID'}; }
+    my $rep=&reply("tmpget:$token",$server);
     my %returnhash;
     foreach my $item (split(/\&/,$rep)) {
 	my ($key,$value)=split(/=/,$item);
@@ -3027,6 +3036,13 @@ sub tmpget {
     return %returnhash;
 }
 
+# ------------------------------------------------------------ tmpget interface
+sub tmpdel {
+    my ($token,$server)=@_;
+    if (!defined($server)) { $server = $perlvar{'lonHostID'}; }
+    return &reply("tmpdel:$token",$server);
+}
+
 # ---------------------------------------------- Custom access rule evaluation
 
 sub customaccess {
@@ -3345,17 +3361,21 @@ sub allowed {
        my $unamedom=$env{'user.name'}.':'.$env{'user.domain'};
        if ($env{'course.'.$env{'request.course.id'}.'.'.$priv.'.roles.denied'}
 	   =~/\Q$rolecode\E/) {
-           &logthis($env{'user.domain'}.':'.$env{'user.name'}.':'.$env{'user.home'}.':'.
-                'Denied by role: '.$priv.' for '.$uri.' as '.$rolecode.' in '.
-                $env{'request.course.id'});
+	   if ($priv ne 'pch') { 
+	       &logthis($env{'user.domain'}.':'.$env{'user.name'}.':'.$env{'user.home'}.':'.
+			'Denied by role: '.$priv.' for '.$uri.' as '.$rolecode.' in '.
+			$env{'request.course.id'});
+	   }
            return '';
        }
 
        if ($env{'course.'.$env{'request.course.id'}.'.'.$priv.'.users.denied'}
 	   =~/\Q$unamedom\E/) {
-           &logthis($env{'user.domain'}.':'.$env{'user.name'}.':'.$env{'user.home'}.
-                'Denied by user: '.$priv.' for '.$uri.' as '.$unamedom.' in '.
-                $env{'request.course.id'});
+	   if ($priv ne 'pch') { 
+	       &logthis($env{'user.domain'}.':'.$env{'user.name'}.':'.$env{'user.home'}.
+			'Denied by user: '.$priv.' for '.$uri.' as '.$unamedom.' in '.
+			$env{'request.course.id'});
+	   }
            return '';
        }
    }
@@ -3365,9 +3385,11 @@ sub allowed {
    if ($thisallowed=~/R/) {
        my $rolecode=(split(/\./,$env{'request.role'}))[0];
        if (&metadata($uri,'roledeny')=~/\Q$rolecode\E/) {
-	   &logthis($env{'user.domain'}.':'.$env{'user.name'}.':'.$env{'user.home'}.':'.
-		'Denied by role: '.$priv.' for '.$uri.' as '.$rolecode);
-          return '';
+	   if ($priv ne 'pch') { 
+	       &logthis($env{'user.domain'}.':'.$env{'user.name'}.':'.$env{'user.home'}.':'.
+			'Denied by role: '.$priv.' for '.$uri.' as '.$rolecode);
+	   }
+	   return '';
        }
    }
 
@@ -3398,7 +3420,8 @@ sub is_on_map {
     my $filename=$uriparts[$#uriparts];
     my $pathname=$uri;
     $pathname=~s|/\Q$filename\E$||;
-    $pathname=~s/^adm\/wrapper\///;    
+    $pathname=~s/^adm\/wrapper\///;
+    $pathname=~s/^adm\/coursedocs\/showdoc\///;
     #Trying to find the conditional for the file
     my $match=($env{'acc.res.'.$env{'request.course.id'}.'.'.$pathname}=~
 	       /\&\Q$filename\E\:([\d\|]+)\&/);
@@ -4809,11 +4832,21 @@ sub EXT {
         return $env{'course.'.$courseid.'.'.$spacequalifierrest};
     } elsif ($realm eq 'resource') {
 
-	my ($section,$group);
-        my @groups = ();
 	if (defined($courseid) && $courseid eq $env{'request.course.id'}) {
 	    if (!$symbparm) { $symbparm=&symbread(); }
 	}
+
+	if ($space eq 'title') {
+	    if (!$symbparm) { $symbparm = $env{'request.filename'}; }
+	    return &gettitle($symbparm);
+	}
+	
+	if ($space eq 'map') {
+	    my ($map) = &decode_symb($symbparm);
+	    return &symbread($map);
+	}
+
+	my ($section, $group, @groups);
 	my ($courselevelm,$courselevel);
 	if ($symbparm && defined($courseid) && 
 	    $courseid eq $env{'request.course.id'}) {
@@ -4830,10 +4863,9 @@ sub EXT {
 	    if (($env{'user.name'} eq $uname) &&
 		($env{'user.domain'} eq $udom)) {
 		$section=$env{'request.course.sec'};
-                @groups=split(/:/,$env{'request.course.groups'});
+                @groups=&sort_course_groups($env{'request.course.groups'},$courseid); 
                 if (@groups > 0) {
                     @groups = sort(@groups);
-                    $group = $groups[0];
                 }
 	    } else {
 		if (! defined($usection)) {
@@ -4843,16 +4875,10 @@ sub EXT {
 		}
                 my $grouplist = &get_users_groups($udom,$uname,$courseid);
                 if ($grouplist) {
-                    @groups = split(/:/,$grouplist);
-                    @groups = sort(@groups);
-                    $group = $groups[0];
+                    @groups=&sort_course_groups($grouplist,$courseid);
                 }
 	    }
 
-            my $grplevel=$courseid.'.['.$group.'].'.$spacequalifierrest;
-            my $grplevelr=$courseid.'.['.$group.'].'.$symbparm;
-            my $grplevelm=$courseid.'.['.$group.'].'.$mapparm;
-
 	    my $seclevel=$courseid.'.['.$section.'].'.$spacequalifierrest;
 	    my $seclevelr=$courseid.'.['.$section.'].'.$symbparm;
 	    my $seclevelm=$courseid.'.['.$section.'].'.$mapparm;
@@ -4866,17 +4892,13 @@ sub EXT {
 	    my $userreply=&resdata($uname,$udom,'user',
 				       ($courselevelr,$courselevelm,
 					$courselevel));
-
 	    if (defined($userreply)) { return $userreply; }
 
 # ------------------------------------------------ second, check some of course
             my $coursereply;
-            if (defined($group)) {
-                $coursereply = &resdata($env{'course.'.$courseid.'.num'},
-                                     $env{'course.'.$courseid.'.domain'},
-                                     'course',
-                                     ($grplevelr,$grplevelm,$grplevel,
-                                      $courselevelr));
+            if (@groups > 0) {
+                $coursereply = &check_group_parms($courseid,\@groups,$symbparm,
+                                       $mapparm,$spacequalifierrest);
                 if (defined($coursereply)) { return $coursereply; }
             }
 
@@ -4951,10 +4973,41 @@ sub EXT {
 	if ($space eq 'time') {
 	    return time;
         }
+    } elsif ($realm eq 'server') {
+# ----------------------------------------------------------------- system.time
+	if ($space eq 'name') {
+	    return $ENV{'SERVER_NAME'};
+        }
     }
     return '';
 }
 
+sub check_group_parms {
+    my ($courseid,$groups,$symbparm,$mapparm,$what) = @_;
+    my @groupitems = ();
+    my $resultitem;
+    my @levels = ($symbparm,$mapparm,$what);
+    foreach my $group (@{$groups}) {
+        foreach my $level (@levels) {
+             my $item = $courseid.'.['.$group.'].'.$level;
+             push(@groupitems,$item);
+        }
+    }
+    my $coursereply = &resdata($env{'course.'.$courseid.'.num'},
+                            $env{'course.'.$courseid.'.domain'},
+                                     'course',@groupitems);
+    return $coursereply;
+}
+
+sub sort_course_groups { # Sort groups based on defined rankings. Default is sort().
+    my ($grouplist,$courseid) = @_;
+    my @groups = split/:/,$grouplist;
+    if (@groups > 1) {
+        @groups = sort(@groups);
+    }
+    return @groups;
+}
+
 sub packages_tab_default {
     my ($uri,$varname)=@_;
     my (undef,$part,$name)=split(/\./,$varname);
@@ -5182,7 +5235,7 @@ sub metadata {
 	$metaentry{':keys'}=join(',',keys %metathesekeys);
 	&metadata_generate_part0(\%metathesekeys,\%metaentry,$uri);
 	$metaentry{':allpossiblekeys'}=join(',',keys %metathesekeys);
-	&do_cache_new('meta',$uri,\%metaentry,60*60*24);
+	&do_cache_new('meta',$uri,\%metaentry,60*60);
 # this is the end of "was not already recently cached
     }
     return $metaentry{':'.$what};
@@ -5278,10 +5331,17 @@ sub get_slot {
 	$cdom=$env{'course.'.$courseid.'.domain'};
 	$cnum=$env{'course.'.$courseid.'.num'};
     }
-    my %slotinfo=&get('slots',[$which],$cdom,$cnum);
-    &Apache::lonhomework::showhash(%slotinfo);
-    my ($tmp)=keys(%slotinfo);
-    if ($tmp=~/^error:/) { return (); }
+    my $key=join("\0",'slots',$cdom,$cnum,$which);
+    my %slotinfo;
+    if (exists($remembered{$key})) {
+	$slotinfo{$which} = $remembered{$key};
+    } else {
+	%slotinfo=&get('slots',[$which],$cdom,$cnum);
+	&Apache::lonhomework::showhash(%slotinfo);
+	my ($tmp)=keys(%slotinfo);
+	if ($tmp=~/^error:/) { return (); }
+	$remembered{$key} = $slotinfo{$which};
+    }
     if (ref($slotinfo{$which}) eq 'HASH') {
 	return %{$slotinfo{$which}};
     }
@@ -5315,6 +5375,7 @@ sub symbverify {
     my $thisfn=$thisurl;
 # wrapper not part of symbs
     $thisfn=~s/^\/adm\/wrapper//;
+    $thisfn=~s/^\/adm\/coursedocs\/showdoc\///;
     $thisfn=&declutter($thisfn);
 # direct jump to resource in page or to a sequence - will construct own symbs
     if ($thisfn=~/\.(page|sequence)$/) { return 1; }
@@ -5369,6 +5430,7 @@ sub symbclean {
 # remove wrapper
 
     $symb=~s/(\_\_\_\d+\_\_\_)adm\/wrapper\/(res\/)*/$1/;
+    $symb=~s/(\_\_\_\d+\_\_\_)adm\/coursedocs\/showdoc\/(res\/)*/$1/;
     return $symb;
 }
 
@@ -6019,6 +6081,11 @@ sub filelocation {
     my ($dir,$file) = @_;
     my $location;
     $file=~ s/^\s*(\S+)\s*$/$1/; ## strip off leading and trailing spaces
+
+    if ($file =~ m-^/adm/-) {
+	$file=~s-^/adm/wrapper/-/-;
+	$file=~s-^/adm/coursedocs/showdoc/-/-;
+    }
     if ($file=~m:^/~:) { # is a contruction space reference
         $location = $file;
         $location =~ s:/~(.*?)/(.*):/home/$1/public_html/$2:;
@@ -6058,6 +6125,9 @@ sub hreflocation {
     my ($dir,$file)=@_;
     unless (($file=~m-^http://-i) || ($file=~m-^/-)) {
 	$file=filelocation($dir,$file);
+    } elsif ($file=~m-^/adm/-) {
+	$file=~s-^/adm/wrapper/-/-;
+	$file=~s-^/adm/coursedocs/showdoc/-/-;
     }
     if ($file=~m-^\Q$perlvar{'lonDocRoot'}\E-) {
 	$file=~s-^\Q$perlvar{'lonDocRoot'}\E--;
@@ -6101,6 +6171,8 @@ sub declutter {
     if ($thisfn=~m|^/enc/|) { $thisfn=&Apache::lonenc::unencrypted($thisfn); }
     $thisfn=~s/^\Q$perlvar{'lonDocRoot'}\E//;
     $thisfn=~s/^\///;
+    $thisfn=~s|^adm/wrapper/||;
+    $thisfn=~s|^adm/coursedocs/showdoc/||;
     $thisfn=~s/^res\///;
     $thisfn=~s/\?.+$//;
     return $thisfn;
@@ -6113,6 +6185,30 @@ sub clutter {
     unless ($thisfn=~/^\/(uploaded|editupload|adm|userfiles|ext|raw|priv|public)\//) { 
        $thisfn='/res'.$thisfn; 
     }
+    if ($thisfn !~m|/adm|) {
+	if ($thisfn =~ m|/ext/|) {
+	    $thisfn='/adm/wrapper'.$thisfn;
+	} else {
+	    my ($ext) = ($thisfn =~ /\.(\w+)$/);
+	    my $embstyle=&Apache::loncommon::fileembstyle($ext);
+	    if ($embstyle eq 'ssi'
+		|| ($embstyle eq 'hdn')
+		|| ($embstyle eq 'rat')
+		|| ($embstyle eq 'prv')
+		|| ($embstyle eq 'ign')) {
+		#do nothing with these
+	    } elsif (($embstyle eq 'img') 
+		|| ($embstyle eq 'emb')
+		|| ($embstyle eq 'wrp')) {
+		$thisfn='/adm/wrapper'.$thisfn;
+	    } elsif ($embstyle eq 'unk'
+		     && $thisfn!~/\.(sequence|page)$/) {
+		$thisfn='/adm/coursedocs/showdoc'.$thisfn;
+	    } else {
+		&logthis("Got a blank emb style");
+	    }
+	}
+    }
     return $thisfn;
 }
 
@@ -6959,10 +7055,15 @@ namesp ($udom and $uname are optional)
 
 =item *
 
-dump($namespace,$udom,$uname,$regexp) : 
+dump($namespace,$udom,$uname,$regexp,$range) : 
 dumps the complete (or key matching regexp) namespace into a hash
-($udom, $uname and $regexp are optional)
+($udom, $uname, $regexp, $range are optional)
 
+$range should be either an integer '100' (give me the first 100
+                                           matching records)
+              or be  two integers sperated by a - with no spaces
+                 '30-50' (give me the 30th through the 50th matching
+                          records)
 =item *
 
 inc($namespace,$store,$udom,$uname) : increments $store in $namespace.