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initial whitelist lifted from html5.
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*~ |
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require 'rubygems' | ||
gem 'nokogiri', '>=1.05' | ||
require 'nokogiri' | ||
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require File.join(File.dirname(__FILE__), 'whitelist') | ||
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module Dryopteris | ||
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def self.sanitize(string_or_io) | ||
doc = Nokogiri(string_or_io) | ||
end | ||
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end |
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# | ||
# HTML whitelist lifted from HTML5 sanitizer code | ||
# http://code.google.com/p/html5lib/ | ||
# | ||
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module Dryopteris | ||
# <html5_license> | ||
# | ||
# Copyright (c) 2006-2008 The Authors | ||
# | ||
# Contributors: | ||
# James Graham - [email protected] | ||
# Anne van Kesteren - [email protected] | ||
# Lachlan Hunt - [email protected] | ||
# Matt McDonald - [email protected] | ||
# Sam Ruby - [email protected] | ||
# Ian Hickson (Google) - [email protected] | ||
# Thomas Broyer - [email protected] | ||
# Jacques Distler - [email protected] | ||
# Henri Sivonen - [email protected] | ||
# The Mozilla Foundation (contributions from Henri Sivonen since 2008) | ||
# | ||
# Permission is hereby granted, free of charge, to any person | ||
# obtaining a copy of this software and associated documentation | ||
# files (the "Software"), to deal in the Software without | ||
# restriction, including without limitation the rights to use, copy, | ||
# modify, merge, publish, distribute, sublicense, and/or sell copies | ||
# of the Software, and to permit persons to whom the Software is | ||
# furnished to do so, subject to the following conditions: | ||
# | ||
# The above copyright notice and this permission notice shall be | ||
# included in all copies or substantial portions of the Software. | ||
# | ||
# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, | ||
# EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF | ||
# MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND | ||
# NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT | ||
# HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, | ||
# WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, | ||
# OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER | ||
# DEALINGS IN THE SOFTWARE. | ||
# | ||
# </html5_license> | ||
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ACCEPTABLE_ELEMENTS = %w[a abbr acronym address area b big blockquote br | ||
button caption center cite code col colgroup dd del dfn dir div dl dt | ||
em fieldset font form h1 h2 h3 h4 h5 h6 hr i img input ins kbd label | ||
legend li map menu ol optgroup option p pre q s samp select small span | ||
strike strong sub sup table tbody td textarea tfoot th thead tr tt u | ||
ul var] | ||
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MATHML_ELEMENTS = %w[maction math merror mfrac mi mmultiscripts mn mo | ||
mover mpadded mphantom mprescripts mroot mrow mspace msqrt mstyle msub | ||
msubsup msup mtable mtd mtext mtr munder munderover none] | ||
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SVG_ELEMENTS = %w[a animate animateColor animateMotion animateTransform | ||
circle defs desc ellipse font-face font-face-name font-face-src g | ||
glyph hkern image linearGradient line marker metadata missing-glyph | ||
mpath path polygon polyline radialGradient rect set stop svg switch | ||
text title tspan use] | ||
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ACCEPTABLE_ATTRIBUTES = %w[abbr accept accept-charset accesskey action | ||
align alt axis border cellpadding cellspacing char charoff charset | ||
checked cite class clear cols colspan color compact coords datetime | ||
dir disabled enctype for frame headers height href hreflang hspace id | ||
ismap label lang longdesc maxlength media method multiple name nohref | ||
noshade nowrap prompt readonly rel rev rows rowspan rules scope | ||
selected shape size span src start style summary tabindex target title | ||
type usemap valign value vspace width xml:lang] | ||
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MATHML_ATTRIBUTES = %w[actiontype align columnalign columnalign | ||
columnalign columnlines columnspacing columnspan depth display | ||
displaystyle equalcolumns equalrows fence fontstyle fontweight frame | ||
height linethickness lspace mathbackground mathcolor mathvariant | ||
mathvariant maxsize minsize other rowalign rowalign rowalign rowlines | ||
rowspacing rowspan rspace scriptlevel selection separator stretchy | ||
width width xlink:href xlink:show xlink:type xmlns xmlns:xlink] | ||
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SVG_ATTRIBUTES = %w[accent-height accumulate additive alphabetic | ||
arabic-form ascent attributeName attributeType baseProfile bbox begin | ||
by calcMode cap-height class color color-rendering content cx cy d dx | ||
dy descent display dur end fill fill-rule font-family font-size | ||
font-stretch font-style font-variant font-weight from fx fy g1 g2 | ||
glyph-name gradientUnits hanging height horiz-adv-x horiz-origin-x id | ||
ideographic k keyPoints keySplines keyTimes lang marker-end | ||
marker-mid marker-start markerHeight markerUnits markerWidth | ||
mathematical max min name offset opacity orient origin | ||
overline-position overline-thickness panose-1 path pathLength points | ||
preserveAspectRatio r refX refY repeatCount repeatDur | ||
requiredExtensions requiredFeatures restart rotate rx ry slope stemh | ||
stemv stop-color stop-opacity strikethrough-position | ||
strikethrough-thickness stroke stroke-dasharray stroke-dashoffset | ||
stroke-linecap stroke-linejoin stroke-miterlimit stroke-opacity | ||
stroke-width systemLanguage target text-anchor to transform type u1 | ||
u2 underline-position underline-thickness unicode unicode-range | ||
units-per-em values version viewBox visibility width widths x | ||
x-height x1 x2 xlink:actuate xlink:arcrole xlink:href xlink:role | ||
xlink:show xlink:title xlink:type xml:base xml:lang xml:space xmlns | ||
xmlns:xlink y y1 y2 zoomAndPan] | ||
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ATTR_VAL_IS_URI = %w[href src cite action longdesc xlink:href xml:base] | ||
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ACCEPTABLE_CSS_PROPERTIES = %w[azimuth background-color | ||
border-bottom-color border-collapse border-color border-left-color | ||
border-right-color border-top-color clear color cursor direction | ||
display elevation float font font-family font-size font-style | ||
font-variant font-weight height letter-spacing line-height overflow | ||
pause pause-after pause-before pitch pitch-range richness speak | ||
speak-header speak-numeral speak-punctuation speech-rate stress | ||
text-align text-decoration text-indent unicode-bidi vertical-align | ||
voice-family volume white-space width] | ||
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ACCEPTABLE_CSS_KEYWORDS = %w[auto aqua black block blue bold both bottom | ||
brown center collapse dashed dotted fuchsia gray green !important | ||
italic left lime maroon medium none navy normal nowrap olive pointer | ||
purple red right solid silver teal top transparent underline white | ||
yellow] | ||
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ACCEPTABLE_SVG_PROPERTIES = %w[fill fill-opacity fill-rule stroke | ||
stroke-width stroke-linecap stroke-linejoin stroke-opacity] | ||
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ACCEPTABLE_PROTOCOLS = %w[ed2k ftp http https irc mailto news gopher nntp | ||
telnet webcal xmpp callto feed urn aim rsync tag ssh sftp rtsp afs] | ||
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# subclasses may define their own versions of these constants | ||
ALLOWED_ELEMENTS = ACCEPTABLE_ELEMENTS + MATHML_ELEMENTS + SVG_ELEMENTS | ||
ALLOWED_ATTRIBUTES = ACCEPTABLE_ATTRIBUTES + MATHML_ATTRIBUTES + SVG_ATTRIBUTES | ||
ALLOWED_CSS_PROPERTIES = ACCEPTABLE_CSS_PROPERTIES | ||
ALLOWED_CSS_KEYWORDS = ACCEPTABLE_CSS_KEYWORDS | ||
ALLOWED_SVG_PROPERTIES = ACCEPTABLE_SVG_PROPERTIES | ||
ALLOWED_PROTOCOLS = ACCEPTABLE_PROTOCOLS | ||
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end |