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7e11c271b9
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121 Commits

Author SHA1 Message Date
Edward Z. Yang
7e11c271b9 Revamp entity decoding to be more like HTML5. 
See %Core.LegacyEntityDecoder for more details.

Signed-off-by: Edward Z. Yang <ezyang@cs.stanford.edu>
 2017-03-07 17:34:59 -08:00
Edward Z. Yang
564af61809 Usage/includes update. 
Signed-off-by: Edward Z. Yang <ezyang@cs.stanford.edu>
 2017-03-06 23:06:56 -08:00
Bastian Hofmann
8e4cacf0a7 Refactor HTML.Noopener to HTML.TargetNoopener so that it behaves like HTML.TargetNoreferrer and is active by default if a target is set 2017-02-03 16:54:51 -08:00
Bastian Hofmann
c82051c3e1 Add HTML.Noopener to add a noopener rel to every external link 
This has performance benefits https://jakearchibald.com/2016/performance-benefits-of-rel-noopener/ but most importantly also security benefits https://mathiasbynens.github.io/rel-noopener/

Adresses https://github.com/ezyang/htmlpurifier/issues/96
 2017-02-03 16:54:51 -08:00
Edward Z. Yang
59463c5c39 Allow %URI.DefaultScheme to be null. 
Fixes #103.

Signed-off-by: Edward Z. Yang <ezyang@cs.stanford.edu>
 2016-10-27 17:30:44 -07:00
Edward Z. Yang
34d252cbbc Update usage.xml. 
Signed-off-by: Edward Z. Yang <ezyang@cs.stanford.edu>
 2016-10-27 02:00:47 -07:00
Edward Z. Yang
d1c5d75027 Fix #73 with Attr.ID.HTML5 
Signed-off-by: Edward Z. Yang <ezyang@cs.stanford.edu>
 2016-07-16 05:52:45 -07:00
Edward Z. Yang
0166c3728b Stop trying to chmod if SerializerPermissions is null, fixes #71 
Signed-off-by: Edward Z. Yang <ezyang@cs.stanford.edu>
 2016-07-01 16:04:11 -04:00
Edward Z. Yang
44baee6a82 Partial border-radius support. 
Signed-off-by: Edward Z. Yang <ezyang@cs.stanford.edu>
 2016-06-30 22:22:13 -04:00
Cameron Ball
1675fc7caf Add %HTML.TargetNoreferrer, which adds rel="noreferrer" when target attribute is set 
Signed-off-by: Edward Z. Yang <ezyang@cs.stanford.edu>
 2016-06-30 21:53:43 -04:00
Wes Cossick
cc35c8eb8c tel protocol support. 2016-06-30 21:19:49 -04:00
Edward Z. Yang
39d3df1fd7 Add AutoFormat.RemoveEmpty.Predicate, fixes #35. 
Signed-off-by: Edward Z. Yang <ezyang@cs.stanford.edu>
 2014-08-31 12:12:17 +01:00
Edward Z. Yang
0767bbc12d Rewrite FixNesting implementation to be tree-based. 
This mega-patch rips out the FixNesting implementation and the related
ChildDef components.  The primary algorithmic change is to convert from
use of tokens to tree nodes, which are far more amenable to the style
of processing that FixNesting uses.  Additionally, FixNesting has been
changed to go bottom-up rather than top-down, in order to avoid needing
to implement backtracking.

This patch simplifies a good deal of the relevant logic, since we no
longer need to continually recalculate the nesting structure when
processing things.  However, the conversion to the alternate format
incurs some overhead, so for small inputs these changes are not a win.
One possibility to greatly reduce the constant factors here is to switch
to entirely using libxml's representation, and never serializing tokens;
this would require one to rewrite injectors, however.

The iterative post-order traversal in FixNesting is a bit subtle, but
we have essentially reified the stack and continuations.

We've removed support for %Core.EscapeInvalidChildren.

Signed-off-by: Edward Z. Yang <ezyang@mit.edu>
 2013-10-20 22:37:01 -07:00
Edward Z. Yang
b3640e1af6 Add conversion functions for our own tree format. 
Signed-off-by: Edward Z. Yang <ezyang@mit.edu>
 2013-10-20 15:05:11 -07:00
Edward Z. Yang
8f401f769e Use a Zipper to process MakeWellFormed, removing quadratic behavior. 
Signed-off-by: Edward Z. Yang <ezyang@mit.edu>
 2013-10-13 13:21:02 -07:00
Edward Z. Yang
412bae13b5 Fix quadratic behavior in DOMLex due to array_shift. 
Signed-off-by: Edward Z. Yang <ezyang@mit.edu>
 2013-09-17 00:48:42 -07:00
Edward Z. Yang
53c2907706 New directive %Core.AllowHostnameUnderscore 
Signed-off-by: Edward Z. Yang <ezyang@mit.edu>
 2013-07-26 21:33:39 -07:00
Edward Z. Yang
631021733b Add %Core.DisableExcludes directive 
Signed-off-by: Edward Z. Yang <ezyang@mit.edu>
 2013-02-17 15:47:38 -08:00
Edward Z. Yang
2189a9430f Support for safe external scripts via explicit whitelist. 
Signed-off-by: Edward Z. Yang <ezyang@mit.edu>
 2012-04-27 17:44:49 -04:00
Edward Z. Yang
7291f19347 Fix problem where stacked AttrTransforms clobber each other. 
Signed-off-by: Edward Z. Yang <ezyang@mit.edu>
 2012-03-16 23:12:16 -04:00
Edward Z. Yang
17af0e4fc1 Release 4.4.0 
Signed-off-by: Edward Z. Yang <ezyang@mit.edu>
 2012-01-18 19:22:31 -05:00
Edward Z. Yang
70028f83d6 Make all of the tests work on all PHP versions. 
Signed-off-by: Edward Z. Yang <ezyang@mit.edu>
 2012-01-18 18:57:13 -05:00
Edward Z. Yang
1c7fedff5a Tighter CSS selector validation. 
Signed-off-by: Edward Z. Yang <ezyang@mit.edu>
 2012-01-17 15:36:26 -05:00
Edward Z. Yang
974fe3f25e Optional support for IDNAs with PEAR Net_IDNA2 
Signed-off-by: Edward Z. Yang <ezyang@mit.edu>
 2012-01-06 05:28:00 -08:00
Bradley M. Froehle
4164b2eb2b Implement Iframe module, and provide %HTML.SafeIframe and %URI.SafeIframeRegexp for untrusted usage. 
The purpose of this addition is twofold. In trusted mode, iframes are
now unconditionally allowed.

However, many online video providers (YouTube, Vimeo) and other web
applications (Google Maps, Google Calendar, etc) provide embed code in
iframe format, which is useful functionality in untrusted mode.
You can specify iframes as trusted elements with %HTML.SafeIframe;
however, you need to additionally specify a whitelist mechanism such as
%URI.SafeIframeRegexp to say what iframe embeds are OK (by default
everything is rejected).

Note: As iframes are invalid in strict doctypes, you will not be able to
use them there.

We also added an always_load parameter to URIFilters in order to support
the strange nature of the SafeIframe URIFilter (it always needs to be
loaded, due to the inability of accessing the %HTML.SafeIframe directive
to see if it's needed!)  We expect this URIFilter can expand in the future
to offer more complex validation mechanisms.

Signed-off-by: Bradley M. Froehle <brad.froehle@gmail.com>
Signed-off-by: Edward Z. Yang <ezyang@mit.edu>
 2011-12-26 21:50:53 +08:00
Edward Z. Yang
6b643ede02 Implement %HTML.AllowedComments and %HTML.AllowedCommentsRegexp 
Signed-off-by: Edward Z. Yang <ezyang@mit.edu>
 2011-12-26 15:34:42 +08:00
Edward Z. Yang
8d572993b4 Implement %HTML.TargetBlank 
Signed-off-by: Edward Z. Yang <ezyang@mit.edu>
 2011-12-26 08:36:00 +08:00
Edward Z. Yang
856a5e5b89 Update INSTALL to avoid missing config snafu, update usage.xml. 
Signed-off-by: Edward Z. Yang <ezyang@mit.edu>
 2011-08-24 09:56:21 -04:00
Edward Z. Yang
afb007d22f Protect against font family innerHTML/cssText attacks. 
Signed-off-by: Edward Z. Yang <ezyang@mit.edu>
 2011-03-27 20:35:43 +01:00
Edward Z. Yang
a32d5b52e1 Fix embedding flash on non-IE browsers and allow more wmode. 
Signed-off-by: Edward Z. Yang <ezyang@mit.edu>
 2011-01-22 12:28:57 +00:00
Petr Skoda
78c4e62245 Add new Cache.SerializerPermissions option. 2011-01-13 22:57:40 +00:00
Edward Z. Yang
cfc4ee1faf Add initial implementation of CSS.Trusted. 
Signed-off-by: Edward Z. Yang <ezyang@mit.edu>
 2010-11-12 18:45:03 +00:00
Edward Z. Yang
8c80349f9d Implement HTML.Nofollow for external links. 
Signed-off-by: Edward Z. Yang <ezyang@mit.edu>
 2010-09-28 12:01:57 -04:00
Edward Z. Yang
86990a21f1 Rename newline normalization directive to something better. 
Signed-off-by: Edward Z. Yang <ezyang@mit.edu>
 2010-09-15 02:50:39 -04:00
Tomasz Muras
9573f0933d Make newline normalization optional. 2010-09-14 23:49:28 -04:00
Edward Z. Yang
7c91104532 Implement HTML.FlashAllowFullScreen. 
Signed-off-by: Edward Z. Yang <ezyang@mit.edu>
 2010-09-08 23:39:20 -04:00
Edward Z. Yang
eac628f490 Add %CSS.ForbiddenProperties directive. 
Signed-off-by: Edward Z. Yang <ezyang@mit.edu>
 2010-09-04 02:59:03 -04:00
Edward Z. Yang
92913bc816 Add documentation about configuration directive types. 
Signed-off-by: Edward Z. Yang <ezyang@mit.edu>
 2010-09-04 02:28:53 -04:00
Edward Z. Yang
1bed8b6d5f Added %Core.RemoveProcessingInstructions. 
Signed-off-by: Edward Z. Yang <ezyang@mit.edu>
 2010-06-20 18:26:44 -07:00
Edward Z. Yang
00c66fa9cb Fix bug in parsing single attribute with entities. 
Signed-off-by: Edward Z. Yang <ezyang@mit.edu>
 2010-05-31 19:44:18 -07:00
Edward Z. Yang
0229458f8f Implement Internet Explorer compatibility code for embedded content. 
Signed-off-by: Edward Z. Yang <ezyang@mit.edu>
 2010-03-08 01:56:40 -05:00
Edward Z. Yang
6776efccdd Update configuration scanner to parse new format. 
Signed-off-by: Edward Z. Yang <ezyang@mit.edu>
 2009-07-07 22:32:44 -04:00
Edward Z. Yang
5bf7ac4e9f Add docs and facilities for having separate directories of schemas. 
Signed-off-by: Edward Z. Yang <edwardzyang@thewritingpot.com>
 2009-05-29 22:16:35 -04:00
Edward Z. Yang
41c9226f3d Style refresh: add/remove vimlines, fix minor factual errors. 
Signed-off-by: Edward Z. Yang <edwardzyang@thewritingpot.com>
 2009-04-09 12:47:10 -04:00
Edward Z. Yang
86ca784da3 Convert all to new configuration get/set format. 
Signed-off-by: Edward Z. Yang <edwardzyang@thewritingpot.com>
 2009-02-21 03:00:34 -05:00
Edward Z. Yang
0c9dfc6c3d Don't add vimline to auto-generated files. 
Signed-off-by: Edward Z. Yang <edwardzyang@thewritingpot.com>
 2008-12-12 15:44:13 -05:00
Edward Z. Yang
12b811d749 Add vim modelines to all files. 
Signed-off-by: Edward Z. Yang <edwardzyang@thewritingpot.com>
 2008-12-06 04:24:59 -05:00
Edward Z. Yang
2c955af135 Remove trailing whitespace. 
Signed-off-by: Edward Z. Yang <edwardzyang@thewritingpot.com>
 2008-12-06 02:28:20 -05:00
Edward Z. Yang
f5cd2c07ea Implement 'overflow' CSS property. 
Signed-off-by: Edward Z. Yang <edwardzyang@thewritingpot.com>
 2008-11-27 16:14:50 -05:00
David Morton
0b6ae1c3c1 Custom Injector to display URL address along with link text. 
When viewing potentially hostile html, it may be helpful to see what
a given link was pointing to.  This new injector takes the href
attribute and adds the text after the link, and deletes the href
attribute.

Other forms of display could easily be contrived, but this seems to be
a good basic way to present the information.

Signed-off-by: David Morton <mortonda@dgrmm.net>
Signed-off-by: Edward Z. Yang <edwardzyang@thewritingpot.com>
 2008-10-23 17:11:29 -04:00