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>
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>
Also changed:
- DirectLex keeps track of column numbers in context
- New class HTMLPurifier_ErrorStruct
Signed-off-by: Edward Z. Yang <edwardzyang@thewritingpot.com>
* Added Charsets and Character attribute types
* Fix a heavily recursive form of ContentSets, this allows a content-set
to include another content-set which includes another content-set, and
so forth.
Signed-off-by: Edward Z. Yang <edwardzyang@thewritingpot.com>
Injector rewind: Injectors can now use the method rewind() in order to move
the input index backwards, so that they can reprocess tokens (other injectors
are not affected by a rewind). This functionality was necessary to implement
nested node removals in %AutoFormat.RemoveEmpty.
End to start ref: To facilitate rewinding, HTMLPurifier_Token_End now
maintains a reference called $start to the starting token for their node.
%AutoFormat.RemoveEmpty removes empty nodes. Lots of people have requested
it, so here is a partially effective implementation. Because it is implemented
as an Injector, it's not possible for it to handle newly introduced empty
nodes by later validators, specifically auto-closing and child validation.
The Injector is only meant to be used on HTML-ish languages.
Signed-off-by: Edward Z. Yang <edwardzyang@thewritingpot.com>
Prior to this commit, the name attribute was unilaterally removed, except
for Strict doctypes or a heavy TidyLevel, when it was converted to an id
attribute. As name is actually permitted in both HTML 4.01 Strict and
XHTML 1.0 Strict, although deprecated, the more sensible default behavior
is to allow it unless TidyLevel is heavy.
Our implementation is slightly stricter than the specs, as name attributes are
treated as first class IDs, disallowing <a name="foo" id="foo"> or duplicate
names. The former should be treated as a special case, but that will be
a separate commit.
Signed-off-by: Edward Z. Yang <edwardzyang@thewritingpot.com>
- Add CurrentCSSProperty context variable
- Move Munge to its own class, derived off of SecureMunge.
- Rename %URI.SecureMunge to %URI.Munge
- Rename %URI.SecureMungeSecretKey to %URI.MungeSecretKey
- Add extra substitutions for munge
git-svn-id: http://htmlpurifier.org/svnroot/htmlpurifier/trunk@1803 48356398-32a2-884e-a903-53898d9a118a
- URIFilter->prepare can return false in order to abort loading of the filter
- Implemented post URI filtering. Set member variable $post to true to set a URIFilter as such.
git-svn-id: http://htmlpurifier.org/svnroot/htmlpurifier/trunk@1772 48356398-32a2-884e-a903-53898d9a118a
- Elimination of ConfigDef and subclasses in favor of stdclass. Most property names stay the same
- Added benchmark script for ConfigSchema
- Types are internally handled as magic integers. Use HTMLPurifier_VarParser->getTypeName to convert to human readable form. HTMLPurifier_VarParser still accepts strings.
- Parser in config schema only used for legacy interface
git-svn-id: http://htmlpurifier.org/svnroot/htmlpurifier/trunk@1764 48356398-32a2-884e-a903-53898d9a118a
- 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
- Generator now takes $config and $context during instantiation
- Double quotes outside of attributes are not escaped
git-svn-id: http://htmlpurifier.org/svnroot/htmlpurifier/trunk@1700 48356398-32a2-884e-a903-53898d9a118a
- Removed HTMLPurifier_Error
- Documentation updates
- Removed more copy() methods in favor of clone
- HTMLPurifier::getInstance() to HTMLPurifier::instance()
- Fix InterchangeBuilder to use HTMLPURIFIER_PREFIX
git-svn-id: http://htmlpurifier.org/svnroot/htmlpurifier/trunk@1689 48356398-32a2-884e-a903-53898d9a118a
- Update docs
- Update source code comments in generated files
- release1-update.php now flushes after it finishes
- Make InterchangeBuilder alphabetize
git-svn-id: http://htmlpurifier.org/svnroot/htmlpurifier/trunk@1676 48356398-32a2-884e-a903-53898d9a118a
- Optimize ConfigSchema by removing non-essential runtime data. We can probably optimize even more by collapsing object structures to arrays.
- Removed validation data from ConfigSchema; this will be reimplemented on Interchange
- Implement a sane Interchange composite hierarchy that doesn't use arrays
- Implement StringHash -> Interchange -> ConfigSchema, and rewrite maintenance file to account for this
git-svn-id: http://htmlpurifier.org/svnroot/htmlpurifier/trunk@1615 48356398-32a2-884e-a903-53898d9a118a
