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[3.1.1] Implement more robust imagecrash protection for CSS width/height.

- Change API for HTMLPurifier_AttrDef_CSS_Length
- Implement HTMLPurifier_AttrDef_Switch class
- Implement HTMLPurifier_Length->compareTo, and make make() accept object instances

git-svn-id: http://htmlpurifier.org/svnroot/htmlpurifier/trunk@1754 48356398-32a2-884e-a903-53898d9a118a
This commit is contained in:
Edward Z. Yang
2008-05-21 01:56:48 +00:00
parent c3fab7200e
commit 1a95852007
15 changed files with 208 additions and 27 deletions

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CSS.MaxImgLength
TYPE: string/null
DEFAULT: '1200px'
VERSION: 3.1.1
--DESCRIPTION--
<p>
This parameter sets the maximum allowed length on <code>img</code> tags,
effectively the <code>width</code> and <code>height</code> properties.
Only absolute units of measurement (in, pt, pc, mm, cm) and pixels (px) are allowed. This is
in place to prevent imagecrash attacks, disable with null at your own risk.
</p>