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0767bbc12d
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865 Commits

Author SHA1 Message Date
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
be5769804a Make the Token class abstract. 
Signed-off-by: Edward Z. Yang <ezyang@mit.edu>
 2013-10-17 16:13:04 -07:00
Edward Z. Yang
d6fbd7df22 Remove some unnecessary pass-by-reference. 
Signed-off-by: Edward Z. Yang <ezyang@mit.edu>
 2013-10-16 18:55:23 -07:00
Edward Z. Yang
804a06f01e Remove PHP 4 compatibility hack. 
Signed-off-by: Edward Z. Yang <ezyang@mit.edu>
 2013-10-16 18:36:44 -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
82bcc62058 Properly handle context variables that are NULL. 
Signed-off-by: Edward Z. Yang <ezyang@mit.edu>
 2013-10-13 13:21:02 -07:00
Edward Z. Yang
f17490f009 Implementation of a Zipper, for efficient splice. 
Signed-off-by: Edward Z. Yang <ezyang@mit.edu>
 2013-10-13 01:16:32 -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
cf44f399f8 Properly use HMAC for secure munging. 
Signed-off-by: Edward Z. Yang <ezyang@mit.edu>
 2013-09-13 21:16:50 -07:00
Marcus Bointon
fac747bdbd PSR-2 reformatting PHPDoc corrections 
With minor corrections.

Signed-off-by: Marcus Bointon <marcus@synchromedia.co.uk>
Signed-off-by: Edward Z. Yang <ezyang@mit.edu>
 2013-08-17 22:27:26 -04:00
Edward Z. Yang
19eee14899 Tighten up invariants. 
Signed-off-by: Edward Z. Yang <ezyang@mit.edu>
 2013-07-26 21:54:53 -07:00
Edward Z. Yang
25d49f4ec0 Explicitly specify decorator name. 
Signed-off-by: Edward Z. Yang <ezyang@mit.edu>
 2013-07-26 21:37:33 -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
af7107e830 Add note fall through is intentional. 
Signed-off-by: Edward Z. Yang <ezyang@mit.edu>
 2013-07-18 10:22:45 -07:00
Marcus Bointon
107b3055a1 Fix var name conflict in loadArray 2013-07-16 21:56:29 -07:00
Synchro
29a3c70370 A bunch of PHPdoc and php codesniffer corrections - no functional code changes 2013-07-16 21:53:17 -07:00
Edward Z. Yang
0680832d41 Use info_parent_def to get parent information, since it may not be present in info array. 
Signed-off-by: Edward Z. Yang <ezyang@mit.edu>
 2013-05-21 17:19:59 -07:00
Edward Z. Yang
19360ddb36 Ignore commas and nbsps for linkification. Thanks nAS for contributing. 
Signed-off-by: Edward Z. Yang <ezyang@mit.edu>
 2013-05-21 16:43:59 -07:00
Edward Z. Yang
3c903b7463 Doc fix. 
Signed-off-by: Edward Z. Yang <ezyang@mit.edu>
 2013-05-18 08:48:47 -07:00
Edward Z. Yang
6e37ecd1c8 Make URI parsing algorithm more strict. 
Thanks Michael Gusev <mgusev@sugarcrm.com> for contributing this patch.

Signed-off-by: Edward Z. Yang <ezyang@mit.edu>
 2013-04-16 13:56:43 -07:00
Edward Z. Yang
d516e2f8de Release 4.5.0 
Signed-off-by: Edward Z. Yang <ezyang@mit.edu>
 2013-02-17 16:04:08 -08:00
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
Michael Tibben
344e0640b6 Add required constant for composer autoloading 
Signed-off-by: Michael Tibben <michael.tibben@99designs.com>
 2012-12-21 16:16:16 +08:00
Edward Z. Yang
62d2550e16 Use SHA-1 instead of MD5. 
Signed-off-by: Edward Z. Yang <ezyang@mit.edu>
 2012-10-27 02:33:22 -07:00
Edward Z. Yang
087145a71b Blacklist more tags from RemoveEmpty. 
Signed-off-by: Edward Z. Yang <ezyang@mit.edu>
 2012-10-27 02:32:48 -07:00
Edward Z. Yang
a44187a5c1 Cleanup after data validation. 
Signed-off-by: Edward Z. Yang <ezyang@mit.edu>
 2012-10-27 02:30:58 -07:00
Edward Z. Yang
c0ad68108a Do checks against iconvAvailable because PHP 5.4 has botched iconv support. 
Signed-off-by: Edward Z. Yang <ezyang@mit.edu>
 2012-10-27 02:27:57 -07:00
Edward Z. Yang
83a574491e Comment for bug that needs to get fixed. 
Signed-off-by: Edward Z. Yang <ezyang@mit.edu>
 2012-10-11 11:40:02 -07:00
Edward Z. Yang
3b537365a4 CSS properties page-break-* 
Signed-off-by: Edward Z. Yang <ezyang@mit.edu>
 2012-10-11 11:39:52 -07:00
Edward Z. Yang
72db575446 Fix bug with non-lower case color names in HTML. 
Signed-off-by: Edward Z. Yang <ezyang@mit.edu>
 2012-07-30 10:54:32 -04:00
Edward Z. Yang
d8bb73ce46 Permit underscores in font-families. 
Signed-off-by: Edward Z. Yang <ezyang@mit.edu>
 2012-07-27 18:28:29 -04:00
Edward Z. Yang
f90372f8ab More support for white-space. 
Signed-off-by: Edward Z. Yang <ezyang@mit.edu>
 2012-06-16 17:10:36 -04:00
Edward Z. Yang
f38fca32a9 Don't lower-case components of background. 
Signed-off-by: Edward Z. Yang <ezyang@mit.edu>
 2012-06-02 11:22:58 -04:00
Edward Z. Yang
5a23004652 Support for inline-block. 
Signed-off-by: Edward Z. Yang <ezyang@mit.edu>
 2012-05-25 23:55:48 -04:00
Edward Z. Yang
6705140082 Fix in AttrTransform_Nofollow 
Signed-off-by: Edward Z. Yang <ezyang@mit.edu>
 2012-05-14 23:07:27 -04:00
Edward Z. Yang
cb7162a995 Use prepend for autoloading on PHP 5.3+ 
Signed-off-by: Edward Z. Yang <ezyang@mit.edu>
 2012-05-02 11:07:24 -04:00
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
31dce298ea Actually make URI.DisableResources do something. 
Signed-off-by: Edward Z. Yang <ezyang@mit.edu>
 2012-03-02 13:25:00 -05:00
Edward Z. Yang
8c9d461a62 Bugfix: _blank not blank. 
Signed-off-by: Edward Z. Yang <ezyang@mit.edu>
 2012-02-18 11:28:01 -05:00
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
9de0785448 Remark about bypassing host list with punycode. 
Signed-off-by: Edward Z. Yang <ezyang@mit.edu>
 2012-01-06 05:32:53 -08:00
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
Edward Z. Yang
94468f3c24 Remove PEARSax3 lexer. 
Signed-off-by: Edward Z. Yang <ezyang@mit.edu>
 2012-01-03 20:40:17 +08:00
Edward Z. Yang
e0354fecd9 Make forms work for transitional doctypes. 
Signed-off-by: Edward Z. Yang <ezyang@mit.edu>
 2011-12-30 22:56:44 +08:00
Edward Z. Yang
5c9b5130c8 Bump minor version number to 4.4.0. 
Signed-off-by: Edward Z. Yang <ezyang@mit.edu>
 2011-12-26 21:55:14 +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