natalie/indefero
1
0
Fork 0
Code Issues Pull Requests Releases Wiki Activity

Fix issue 618 by returning the input unaltered in case PCRE still fails

Browse Source 
to evaluate it with the expanded backtrack limit.
This commit is contained in:
Thomas Keller
2011-03-18 12:10:42 +01:00
parent 5f008a14f5
commit 734ddda363
3 changed files with 77 additions and 38 deletions
Download Patch File Download Diff File Expand all files Collapse all files

26
src/IDF/Template/Markdown.php
View File

@@ -22,6 +22,7 @@
# ***** END LICENSE BLOCK ***** */
Pluf::loadFunction('Pluf_Text_MarkDown_parse');
Pluf::loadFunction('IDF_Template_safePregReplace');
/**
* Make the links to issues and commits.
@@ -34,11 +35,6 @@ class IDF_Template_Markdown extends Pluf_Template_Tag
function start($text, $request)
{
// PHP sets the backtrack limit quite low, so some regexes may
// fail unexpectedly on large inputs or weird cornercases (see issue 618)
$pcre_backtrack_limit = ini_get('pcre.backtrack_limit');
ini_set('pcre.backtrack_limit', 10000000);
$this->project = $request->project;
$this->request = $request;
// Replace like in the issue text
@@ -47,22 +43,20 @@ class IDF_Template_Markdown extends Pluf_Template_Tag
// Replace [[[path/to/file.mdtext, commit]]] with embedding
// the content of the file into the wki page
if ($this->request->rights['hasSourceAccess']) {
$text = preg_replace_callback('#\[\[\[([^\,]+)(?:, ([^/]+))?\]\]\]#im',
array($this, 'callbackEmbeddedDoc'),
$text);
$text = IDF_Template_safePregReplace('#\[\[\[([^\,]+)(?:, ([^/]+))?\]\]\]#im',
array($this, 'callbackEmbeddedDoc'),
$text);
}
// Replace [Page]([[PageName]]) with corresponding link to the page, with link text being Page.
$text = preg_replace_callback('#\[([^\]]+)\]\(\[\[([A-Za-z0-9\-]+)\]\]\)#im',
array($this, 'callbackWikiPage'),
$text);
$text = IDF_Template_safePregReplace('#\[([^\]]+)\]\(\[\[([A-Za-z0-9\-]+)\]\]\)#im',
array($this, 'callbackWikiPage'),
$text);
// Replace [[PageName]] with corresponding link to the page.
$text = preg_replace_callback('#\[\[([A-Za-z0-9\-]+)\]\]#im',
array($this, 'callbackWikiPageNoName'),
$text);
$text = IDF_Template_safePregReplace('#\[\[([A-Za-z0-9\-]+)\]\]#im',
array($this, 'callbackWikiPageNoName'),
$text);
$filter = new IDF_Template_MarkdownPrefilter();
echo $filter->go(Pluf_Text_MarkDown_parse($text));
ini_set('pcre.backtrack_limit', $pcre_backtrack_limit);
}
function callbackWikiPageNoName($m)