• Do not register here on develop.twiki.org, login with your twiki.org account.
• Use View topic Item7848 for generic doc work for TWiki-6.1.1. Use View topic Item7851 for doc work on extensions that are not part of a release. More... Close
• Anything you create or change in standard webs (Main, TWiki, Sandbox etc) will be automatically reverted on every SVN update.
Does this site look broken?. Use the LitterTray web for test cases.

Item7190: RSS feed broken, description tag contains byte 0

Item Form Data

AppliesTo: Component: Priority: CurrentState: WaitingFor: TargetRelease ReleasedIn
Engine RSS feed Normal Closed   major 6.0.0

Edit Form Data

Summary:
Reported By:
Codebase:
Applies To:
Component:
Priority:
Current State:
Waiting For:
Target Release:
Released In:
 

Detail

TWiki.org's Plugins web's WebRss feed is broken.

The description of VarUSERSIG contains \0 byte characters as seen here in this octal dump:

od -c WebRss.html
0000000   <   ?   x   m   l       v   e   r   s   i   o   n   =   "   1
0000020   .   0   "       e   n   c   o   d   i   n   g   =   "   i   s
0000040   o   -   8   8   5   9   -   1   "       ?   >   <   r   d   f
0000060   :   R   D   F       x   m   l   n   s   :   r   d   f   =   "
.....
0016740   /   i   t   e   m   >  \n   <   i   t   e   m       r   d   f
0016760   :   a   b   o   u   t   =   "   h   t   t   p   :   /   /   t
0017000   w   i   k   i   .   o   r   g   /   c   g   i   -   b   i   n
0017020   /   v   i   e   w   /   P   l   u   g   i   n   s   /   V   a
0017040   r   U   S   E   R   S   I   G   "   >  \n           <   t   i
0017060   t   l   e   >   V   a   r   U   S   E   R   S   I   G   <   /
0017100   t   i   t   l   e   >  \n           <   l   i   n   k   >   h
0017120   t   t   p   :   /   /   t   w   i   k   i   .   o   r   g   /
0017140   c   g   i   -   b   i   n   /   v   i   e   w   /   P   l   u
0017160   g   i   n   s   /   V   a   r   U   S   E   R   S   I   G   <
0017200   /   l   i   n   k   >  \n           <   d   e   s   c   r   i
0017220   p   t   i   o   n   >   #   V   a   r   U   S   E   R   S   I
0017240   G       U   S   E   R   S   I   G       s   h   o   w       u
0017260   s   e   r       s   i   g   n   a   t   u   r   e       w   i
0017300   t   h       p   r   o   f   i   l   e       p   i   c   t   u
0017320   r   e       i   c   o   n       S   y   n   t   a   x   :
0017340   %       n   o   p       U   S   E   R   S   I   G   {   W   i
0017360   k   i   N   a   m   e       o   r       %       n   o   p
0017400   U   S   E   R   S   I   G   {   W   i   k   i   N   a   m   e
0017420       Y   Y   Y   Y       M   M       D   D  \0       e   s   c
0017440      \0       1   }       .   .   .       (   l   a   s   t
0017460   c   h   a   n   g   e   d       b   y       P   e   t   e   r
0017500   T   h   o   e   n   y   )   <   /   d   e   s   c   r   i   p
0017520   t   i   o   n   >  \n           <   d   c   :   d   a   t   e
0017540   >   2   0   1   3   -   0   3   -   1   0   T   0   6   :   5
0017560   8   :   5   0   Z   <   /   d   c   :   d   a   t   e   >  \n
0017600           <   d   c   :   c   o   n   t   r   i   b   u   t   o

Source in VarUSERSIG:

%<nop>USERSIG{WikiName - YYYY-MM-DD}%

Actual output:

% nop USERSIG{WikiName YYYY MM DD\0 esc \0 1}

Expected output:

USERSIG{WikiName YYYY MM DD}

-- TWiki:Main/PeterThoeny - 2013-03-14

This is now fixed in TWiki::Render in svn trunk and 5.1 branch.

Negative enumeration of { } in %VAR{}% caused the cleanup of unbalanced brackets to fail in TWiki::Render, which introduced the null characters in RSS feeds.

Patch:

--- TWiki/Render.pm   (revision 25226)
+++ TWiki/Render.pm   (working copy)
@@ -1452,7 +1452,7 @@
     # Format e-mail to add spam padding (HTML tags removed later)
     $text =~ s/$STARTWW((mailto\:)?[a-zA-Z0-9-_.+]+@[a-zA-Z0-9-_.]+\.[a-zA-Z0-9-_]+)$ENDWW/_mailLink( $this, $1 )/gem;
     $text =~ s/<!--.*?-->//gs;          # remove all HTML comments
-    $text =~ s|<nop[ />]*>|$nopToken|g; # escape <nop>
+    $text =~ s|<nop[ /]*>|$nopToken|g;  # escape <nop>
     $text =~ s/<[^>]*>//g;              # remove all HTML tags
     $text =~ s/\&[a-z]+;/ /g;           # remove entities
     if( $opts =~ /nohead/ ) {
@@ -1493,7 +1493,7 @@
     $result = "$escToken$$theLevelRef$theOpen";
   } else {
     $result = "$escToken$$theLevelRef$theClose";
-    $$theLevelRef--;
+    $$theLevelRef-- if( $$theLevelRef > 0 );
   }
   return $result;
 }

-- TWiki:Main.PeterThoeny - 2013-03-15

At the same time I fixed the SpreadSheetPlugin that uses the same logic to enumerate the function brackets. They are now guarded to never be negative.

-- TWiki:Main.PeterThoeny - 2013-03-15

ItemTemplate
Summary RSS feed broken, description tag contains byte 0
ReportedBy TWiki:Main.PeterThoeny
Codebase ~twiki4, 5.1.4, 5.1.3
SVN Range TWiki-5.1.3-trunk, Wed, 13 Mar 2013, build 25432
AppliesTo Engine
Component RSS feed
Priority Normal
CurrentState Closed
WaitingFor

Checkins TWikirev:25433 TWikirev:25435 TWikirev:25436 TWikirev:25437 TWikirev:25438 TWikirev:25472
TargetRelease major
ReleasedIn 6.0.0
Edit | Attach | Watch | Print version | History: r12 < r11 < r10 < r9 < r8 | Backlinks | Raw View |  Raw edit | More topic actions
Topic revision: r12 - 2013-10-15 - PeterThoeny
 
This site is powered by the TWiki collaboration platform Powered by PerlCopyright © 2008-2024 by the contributing authors. All material on this collaboration platform is the property of the contributing authors.
Ideas, requests, problems regarding TWiki? Send feedback