--- rat/lonratsrv.pm	2000/07/04 16:24:17	1.2
+++ rat/lonratsrv.pm	2005/06/08 15:18:28	1.31
@@ -1,12 +1,30 @@
 # The LearningOnline Network with CAPA
 # Server for RAT Maps
 #
-# (Edit Handler for RAT Maps
-# (TeX Content Handler
+# $Id: lonratsrv.pm,v 1.31 2005/06/08 15:18:28 www 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/
 #
-# 05/29/00,05/30 Gerd Kortemeyer)
-# 7/1 Gerd Kortemeyer)
-# 7/1,7/3,7/4 Gerd Kortemeyer
 
 package Apache::lonratsrv;
 
@@ -14,38 +32,52 @@ use strict;
 use Apache::Constants qw(:common);
 use Apache::File;
 use HTML::TokeParser;
+use Apache::lonnet;
 
-
-# ---------------------------------------------------------- Escape Quote Chars
+# ------------------------------------------------------------- From RAT to XML
 
 sub qtescape {
     my $str=shift;
-    $str =~ s/([\"\%])/"%".unpack('H2',$1)/eg;
+    $str=~s/\&\#58\;/\:/g;
+    $str=~s/\&\#39\;/\'/g;
+    $str=~s/\&\#44\;/\,/g;
+    $str=~s/\"/\&\#34\;/g;
     return $str;
 }
 
-# ----------------------------------------------------- Un-Escape Special Chars
+# ------------------------------------------------------------- From XML to RAT
 
-sub unescape {
+sub qtunescape {
     my $str=shift;
-    $str =~ s/%([a-fA-F0-9][a-fA-F0-9])/pack("C",hex($1))/eg;
+    $str=~s/\:/\&colon\;/g;
+    $str=~s/\'/\&\#39\;/g;
+    $str=~s/\,/\&\#44\;/g;
+    $str=~s/\"/\&\#34\;/g;
     return $str;
 }
 
 # --------------------------------------------------------- Loads map from disk
 
 sub loadmap {
-    my ($fn,$errtext)=@_;
+    my ($fn,$errtext,$infotext)=@_;
+    if ($errtext) { return('',$errtext); }
     my $outstr='';
-    my @content=();
     my @obj=();
     my @links=();
-    if (-e $fn) {
+    my $instr='';
+    if ($fn=~/^\/*uploaded\//) {
+        $instr=&Apache::lonnet::getfile($fn);
+    } elsif (-e $fn) {
+        my @content=();
         {
 	    my $fh=Apache::File->new($fn);
             @content=<$fh>;
         }
-        my $instr=join('',@content);
+        $instr=join('',@content);
+    }
+    if ($instr eq -2) {
+        $errtext.='Map not loaded: An error occured while trying to load the map.';
+    } elsif ($instr) {
         my $parser = HTML::TokeParser->new(\$instr);
         my $token;
         my $graphmode=0;
@@ -58,33 +90,111 @@ sub loadmap {
                 if ($token->[1] eq 'map') {
 		    $graphmode=($token->[2]->{'mode'} eq 'rat/graphical');
                 } elsif ($token->[1] eq 'resource') {
-                } elsif ($token->[1] eq 'condition') {
-                } elsif ($token->[1] eq 'link') {
-                    $outstr.='<&>objlinks';
-                    if ($graphmode) {
-			$outstr.='<:>'.$token->[2]->{'index'};
-                        @links[$token->[2]->{'index'}]=1;
+# -------------------------------------------------------------------- Resource
+                    $outstr.='<&>objcont';
+                    if ($token->[2]->{'id'}) {
+			$outstr.='<:>'.$token->[2]->{'id'};
+                        if ($obj[$token->[2]->{'id'}]==1) {
+                           $errtext.='Error: multiple use of ID '.
+                                     $token->[2]->{'id'}.'. ';
+                        }
+                        $obj[$token->[2]->{'id'}]=1; 
                     } else {
                         my $i=1;
-                        while (($i<=$#links) && ($links[$i]==1)) { $i++; }
+                        while (($i<=$#obj) && ($obj[$i]!=0)) { $i++; }
                         $outstr.='<:>'.$i;
+                        $obj[$i]=1;
+                    }
+                    $outstr.='<:>';
+                    $outstr.=qtunescape($token->[2]->{'title'}).":";
+                    $outstr.=qtunescape($token->[2]->{'src'}).":";
+                    if ($token->[2]->{'external'} eq 'true') {
+                        $outstr.='true:';
+                    } else {
+                        $outstr.='false:';
+                    }
+                    if ($token->[2]->{'type'}) {
+			$outstr.=$token->[2]->{'type'}.':';
+                    }  else {
+                        $outstr.='normal:';
+                    }
+		    if ($token->[2]->{'type'} ne 'zombie') {
+			$outstr.='res';
+		    } else {
+                        $outstr.='zombie';
 		    }
+                } elsif ($token->[1] eq 'condition') {
+# ------------------------------------------------------------------- Condition
+                    $outstr.='<&>objcont';
+                    if ($token->[2]->{'id'}) {
+			$outstr.='<:>'.$token->[2]->{'id'};
+                        if ($obj[$token->[2]->{'id'}]==1) {
+                           $errtext.='Error: multiple use of ID '.
+                                     $token->[2]->{'id'}.'. ';
+                        }
+                        $obj[$token->[2]->{'id'}]=1; 
+                    } else {
+                        my $i=1;
+                        while (($i<=$#obj) && ($obj[$i]!=0)) { $i++; }
+                        $outstr.='<:>'.$i;
+                        $obj[$i]=1;
+                    }
+                    $outstr.='<:>';
+                    $outstr.=qtunescape($token->[2]->{'value'}).':';
+                    if ($token->[2]->{'type'}) {
+			$outstr.=$token->[2]->{'type'}.':';
+                    } else {
+                        $outstr.='normal:';
+                    }
+                    $outstr.='cond';
+                } elsif ($token->[1] eq 'link') {
+# ----------------------------------------------------------------------- Links
+                    $outstr.='<&>objlinks';
+
+                        if ($token->[2]->{'index'}) {
+			   if ($links[$token->[2]->{'index'}]) {
+                               $errtext.='Error: multiple use of link index '.
+			       $token->[2]->{'index'}.'. ';
+                           }
+			   $outstr.='<:>'.$token->[2]->{'index'};
+                           $links[$token->[2]->{'index'}]=1;
+                        } else {
+                           my $i=1;
+                           while (($i<=$#links) && ($links[$i]==1)) { $i++; }
+                           $outstr.='<:>'.$i;
+                           $links[$i]=1;
+		       }
+		    
                     $outstr.='<:>'.$token->[2]->{'from'}.
-                             '<:>'.$token->[2]->{'to'};
+                             ':'.$token->[2]->{'to'};
                     if ($token->[2]->{'condition'}) {
-			$outstr.='<:>'.$token->[2]->{'condition'};
+			$outstr.=':'.$token->[2]->{'condition'};
                     } else {
- 			$outstr.='<:>0';
-                   }
+ 			$outstr.=':0';
+                    }
+# ------------------------------------------------------------------- Parameter
+                } elsif ($token->[1] eq 'param') {
+                    $outstr.='<&>objparms<:>'.$token->[2]->{'to'}.'<:>'.
+                            $token->[2]->{'type'}.'___'.$token->[2]->{'name'}
+                                                 .'___'.$token->[2]->{'value'};
                 } elsif ($graphmode) {
+# --------------------------------------------- All other tags (graphical only)
+                    $outstr.='<&>'.$token->[1];
+                    if (defined($token->[2]->{'index'})) {
+			$outstr.='<:>'.$token->[2]->{'index'};
+                        if ($token->[1] eq 'obj') {
+			    $obj[$token->[2]->{'index'}]=2;
+                        }
+                    }
+                    $outstr.='<:>'.$token->[2]->{'value'};
                 }
             }
         }
 
     } else {
-        $errtext.='Map not loaded: The file does not exist.';
+        $errtext.='Map not loaded: The file does not exist. ';
     }
-    return($outstr,$errtext);
+    return($outstr,$errtext,$infotext);
 }
 
 
@@ -92,11 +202,14 @@ sub loadmap {
 
 sub savemap {
     my ($fn,$errtext)=@_;
-    if (($fn=~/\.course$/) ||
-        ($fn=~/\.sequence$/) ||
-        ($fn=~/\.page$/)) {
+    my $infotext='';
+    my %alltypes;
+    my %allvalues;
+    if (($fn=~/\.sequence(\.tmp)*$/) ||
+        ($fn=~/\.page(\.tmp)*$/)) {
+
 # ------------------------------------------------------------- Deal with input
-        my @tags=split(/<&>/,$ENV{'form.output'});
+        my @tags=split(/<&>/,$env{'form.output'});
         my $outstr='';
         my $graphdef=0;
         if ($tags[0] eq 'graphdef<:>yes') {
@@ -105,40 +218,41 @@ sub savemap {
         } else {
             $outstr="<map>\n";
         }
-        map {
+        foreach (@tags) {
 	   my @parts=split(/<:>/,$_);
            if ($parts[0] eq 'objcont') {
                my @comp=split(/:/,$parts[$#parts]);
 # --------------------------------------------------------------- Logical input
-	       if ($comp[$#comp] eq 'res') {
-                   $comp[0]=~s/\&\#(\d+)\;/pack("C",$1)/eg;
-                   $comp[1]=~s/\&\#(\d+)\;/pack("C",$1)/eg;
+	       if (($comp[$#comp] eq 'res') || ($comp[$#comp] eq 'zombie')) {
+                   $comp[0]=qtescape($comp[0]);
+                   $comp[1]=qtescape($comp[1]);
                    if ($comp[2] eq 'true') {
 		       if ($comp[1]!~/^http\:\/\//) {
 			   $comp[1]='http://'.$comp[1];
                        }
+                       $comp[1].='" external="true';
                    } else {
 		       if ($comp[1]=~/^http\:\/\//) {
 			   $comp[1]=~s/^http\:\/\/[^\/]*\//\//;
                        }
                    }
 		   $outstr.='<resource id="'.$parts[1].'" src="'
-                          .qtescape($comp[1]).'"';
+                          .$comp[1].'"';
 
                    if (($comp[3] ne '') && ($comp[3] ne 'normal')) {
 		       $outstr.=' type="'.$comp[3].'"';
                    }
                    if ($comp[0] ne '') {
-		       $outstr.=' title="'.qtescape($comp[0]).'"';
+		       $outstr.=' title="'.$comp[0].'"';
                    }
-                   $outstr.="></resource>\n";
+                   $outstr.=" />\n";
                } elsif ($comp[$#comp] eq 'cond') {
                    $outstr.='<condition id="'.$parts[1].'"';
                    if (($comp[1] ne '') && ($comp[1] ne 'normal')) {
 		       $outstr.=' type="'.$comp[1].'"';
                    }
                    $outstr.=' value="'.qtescape($comp[0]).'"';
-                   $outstr.="></condition>\n";
+                   $outstr.=" />\n";
                }
            } elsif ($parts[0] eq 'objlinks') {
                my @comp=split(/:/,$parts[$#parts]);
@@ -149,39 +263,62 @@ sub savemap {
                   $outstr.=' condition="'.$comp[2].'"';
                }
                $outstr.=' index="'.$parts[1].'"';
-               $outstr.="></link>\n";
+               $outstr.=" />\n";
+           } elsif ($parts[0] eq 'objparms') {
+               undef %alltypes;
+               undef %allvalues;
+               foreach (split(/:/,$parts[$#parts])) {
+                   my ($type,$name,$value)=split(/\_\_\_/,$_);
+                   $alltypes{$name}=$type;
+                   $allvalues{$name}=$value;
+               }
+               foreach (keys %allvalues) {
+                  if ($allvalues{$_} ne '') {
+                   $outstr.='<param to="'.$parts[1].'" type="'
+                          .$alltypes{$_}.'" name="'.$_
+                          .'" value="'.$allvalues{$_}.'" />'
+                          ."\n";
+	          }
+               }
            } elsif (($parts[0] ne '') && ($graphdef)) {
 # ------------------------------------------------------------- Graphical input
                $outstr.='<'.$parts[0];
                if ($#parts==2) {
 		   $outstr.=' index="'.$parts[1].'"';
                }
-               $outstr.=' value="'.qtescape($parts[$#parts]).'"></'.
-                        $parts[0].">\n";
+               $outstr.=' value="'.qtescape($parts[$#parts]).'" />'."\n";
            }
-        } @tags;
+        }
         $outstr.="</map>\n";
-        {
+	if ($fn=~/^\/*uploaded\/(\w+)\/(\w+)\/(.*)$/) {
+	    $env{'form.output'}=$outstr;
+            my $home=&Apache::lonnet::homeserver($2,$1);
+            my $result=&Apache::lonnet::finishuserfileupload($2,$1,$home,
+						'output',$3);
+	    if ($result != m|^/uploaded/|) {
+		$errtext.='Map not saved: A network error occured when trying to save the map. ';
+	    }
+        } else {
           my $fh;
           if ($fh=Apache::File->new(">$fn")) {
              print $fh $outstr;
-             $errtext.="Map saved as $fn.";
+             $infotext.="Map saved as $fn. ";
 	  } else {
-             $errtext.='Could not write file $fn. Map not saved.';
+             $errtext.='Could not write file '.$fn.'.  Map not saved. ';
 	  }
         }
     } else {
 # -------------------------------------------- Cannot write to that file, error
-        $errtext.='Map not saved: The specified path does not exist.';
+        $errtext.='Map not saved: The specified path does not exist. ';
     }
-    return $errtext;
+    return ($errtext,$infotext);
 }
 
 # ================================================================ Main Handler
 
 sub handler {
   my $r=shift;
-  $r->content_type('text/html');
+  &Apache::loncommon::content_type($r,'text/html');
   $r->send_http_header;
 
   return OK if $r->header_only;
@@ -193,13 +330,21 @@ sub handler {
   $url=~s/\/loadonly\/ratserver$/\/save\/ratserver/;
   
   my $fn=$r->filename;
+  my $lonDocRoot=$r->dir_config('lonDocRoot');
+  if ( $fn =~ /$lonDocRoot/ ) {
+      #internal authentication, needs fixup.
+      $fn = $url;
+      $fn=~s|^/~(\w+)|/home/$1/public_html|;
+      $fn=~s|/[^/]*/ratserver$||;
+  }
   my $errtext='';
+  my $infotext='';
   my $outtext='';
 
   if ($mode ne 'loadonly') {
-     $errtext=&savemap($fn,$errtext);
+     ($errtext,$infotext)=&savemap($fn,$errtext);
   }
-  ($outtext,$errtext)=&loadmap($fn,$errtext);
+  ($outtext,$errtext,$infotext)=&loadmap($fn,$errtext,$infotext);
 
   $r->print(<<ENDDOCUMENT);
 <html>
@@ -207,11 +352,14 @@ sub handler {
 <form name=storage method=post action="$url">
 <input type=hidden name=output value="$outtext">
 </form>
+<script>
+    parent.flag=1;
+</script>
 ENDDOCUMENT
-    if ($errtext ne '') {
+    if (($errtext ne '') || ($infotext ne '')) {
 	$r->print(<<ENDSCRIPT);
 <script>
-    alert("$errtext");
+    alert("$infotext $errtext");
 </script>
 ENDSCRIPT
     }
@@ -222,10 +370,3 @@ ENDSCRIPT
 
 1;
 __END__
-
-
-
-
-
-
-