1 NEWS ( CHANGELOG and HISTORY ) HTMLPurifier
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4 = KEY ====================
10 ==========================
12 3.1.2, unknown release date
13 # Using %Core.CollectErrors forces line number/column tracking on, whereas
14 previously you could theoretically turn it off.
15 # HTMLPurifier_Injector->notifyEnd() is formally deprecated, and has changed
16 behavior slightly (end tokens it sees are not guaranteed to exist). Please
17 use handleEnd() instead.
18 ! %Output.AttrSort for when you need your attributes in alphabetical order to
19 deal with a bug in FCKEditor. Requested by frank farmer.
20 ! Enable HTML comments when %HTML.Trusted is on. Requested by Waldo Jaquith.
21 ! Proper support for name attribute. It is now allowed and equivalent to the id
22 attribute in a and img tags, and is only converted to id when %HTML.TidyLevel
23 is heavy (for all doctypes).
24 ! %AutoFormat.RemoveEmpty to remove some empty tags from documents. Please don't
25 use on hand-written HTML.
26 ! Add error-cases for unsupported elements in MakeWellFormed. This enables
27 the strategy to be used, standalone, on untrusted input.
28 ! %Core.AggressivelyFixLt is on by default. This causes more sensible
29 processing of left angled brackets in smileys and other whatnot.
30 ! Test scripts now have a 'type' parameter, which lets you say 'htmlpurifier',
31 'phpt', 'vtest', etc. in order to only execute those tests. This supercedes
32 the --only-phpt parameter, although for backwards-compatibility the flag
34 ! AutoParagraph auto-formatter will now preserve double-newlines upon output.
35 Users who are not performing inbound filtering, this may seem a little
36 useless, but as a bonus, the test suite and handling of edge cases is also
38 ! Experimental implementation of forms for %HTML.Trusted
39 ! Track column numbers when maintain line numbers is on
40 ! Proprietary 'background' attribute on table-related elements converted into
41 corresponding CSS. Thanks Fusemail for sponsoring this feature!
42 ! Add forward(), forwardUntilEndToken(), backward() and current() to Injector
44 ! HTMLPurifier_Injector->handleEnd() permits modification to end tokens. The
45 time of operation varies slightly from notifyEnd() as *all* end tokens are
46 processed by the injector before they are subject to the well-formedness rules.
47 ! %Attr.DefaultImageAlt allows overriding default behavior of setting alt to
48 basename of image when not present.
49 - Fix two bugs in %URI.MakeAbsolute; one involving empty paths in base URLs,
50 the other involving an undefined $is_folder error.
51 - Throw error when %Core.Encoding is set to a spurious value. Previously,
52 this errored silently and returned false.
53 - Redirected stderr to stdout for flush error output.
54 - %URI.DisableExternal will now use the host in %URI.Base if %URI.Host is not
56 - Do not re-munge URL if the output URL has the same host as the input URL.
58 - Fix error in documentation regarding %Filter.ExtractStyleBlocks
59 - Prevent <![CDATA[<body></body>]]> from triggering %Core.ConvertDocumentToFragment
60 - Fix bug with inline elements in blockquotes conflicting with strict doctype
61 - Detect if HTML support is disabled for DOM by checking for loadHTML() method.
62 - Fix bug where dots and double-dots in absolute URLs without hostname were
63 not collapsed by URIFilter_MakeAbsolute.
64 - Fix bug with anonymous modules operating on SafeEmbed or SafeObject elements
65 by reordering their addition.
66 - Will now throw exception on many error conditions during lexer creation; also
67 throw an exception when MaintainLineNumbers is true, but a non-tracksLineNumbers
69 - Detect if domxml extension is loaded, and use DirectLEx accordingly.
70 . Strategy_MakeWellFormed now operates in-place, saving memory and allowing
71 for more interesting filter-backtracking
72 . New HTMLPurifier_Injector->rewind() functionality, allows injectors to rewind
73 index to reprocess tokens.
74 . StringHashParser now allows for multiline sections with "empty" content;
75 previously the section would remain undefined.
76 . Added --quick option to multitest.php, which tests only the most recent
77 release for each series.
78 . Added --distro option to multitest.php, which accepts either 'normal' or
79 'standalone'. This supercedes --exclude-normal and --exclude-standalone
81 3.1.1, released 2008-06-19
82 # %URI.Munge now, by default, does not munge resources (for example, <img src="">)
83 In order to enable this again, please set %URI.MungeResources to true.
84 ! More robust imagecrash protection with height/width CSS with %CSS.MaxImgLength,
85 and height/width HTML with %HTML.MaxImgLength.
86 ! %URI.MungeSecretKey for secure URI munging. Thanks Chris
87 for sponsoring this feature. Check out the corresponding documentation
88 for details. (Att Nightly testers: The API for this feature changed before
89 the general release. Namely, rename your directives %URI.SecureMungeSecretKey =>
90 %URI.MungeSecretKey and and %URI.SecureMunge => %URI.Munge)
91 ! Implemented post URI filtering. Set member variable $post to true to set
93 ! Allow modules to define injectors via $info_injector. Injectors are
94 automatically disabled if injector's needed elements are not found.
95 ! Support for "safe" objects added, use %HTML.SafeObject and %HTML.SafeEmbed.
96 Thanks Chris for sponsoring. If you've been using ad hoc code from the
97 forums, PLEASE use this instead.
98 ! Added substitutions for %e, %n, %a and %p in %URI.Munge (in order,
99 embedded, tag name, attribute name, CSS property name). See %URI.Munge
100 for more details. Requested by Jochem Blok.
101 - Disable percent height/width attributes for img.
102 - AttrValidator operations are now atomic; updates to attributes are not
103 manifest in token until end of operations. This prevents naughty internal
104 code from directly modifying CurrentToken when they're not supposed to.
105 This semantics change was requested by frank farmer.
106 - Percent encoding checks enabled for URI query and fragment
107 - Fix stray backslashes in font-family; CSS Unicode character escapes are
108 now properly resolved (although *only* in font-family). Thanks Takeshi Terada
110 - Improve parseCDATA algorithm to take into account newline normalization
111 - Account for browser confusion between Yen character and backslash in
112 Shift_JIS encoding. This fix generalizes to any other encoding which is not
113 a strict superset of printable ASCII. Thanks Takeshi Terada for reporting.
114 - Fix missing configuration parameter in Generator calls. Thanks vs for the
116 - Improved adherence to Unicode by checking for non-character codepoints.
117 Thanks Geoffrey Sneddon for reporting. This may result in degraded
118 performance for extremely large inputs.
119 - Allow CSS property-value pair ''text-decoration: none''. Thanks Jochem Blok
121 . Added HTMLPurifier_UnitConverter and HTMLPurifier_Length for convenient
122 handling of CSS-style lengths. HTMLPurifier_AttrDef_CSS_Length now uses
124 . API of HTMLPurifier_AttrDef_CSS_Length changed from __construct($disable_negative)
125 to __construct($min, $max). __construct(true) is equivalent to
127 . Added HTMLPurifier_AttrDef_Switch class
128 . Rename HTMLPurifier_HTMLModule_Tidy->construct() to setup() and bubble method
129 up inheritance hierarchy to HTMLPurifier_HTMLModule. All HTMLModules
130 get this called with the configuration object. All modules now
131 use this rather than __construct(), although legacy code using constructors
132 will still work--the new format, however, lets modules access the
133 configuration object for HTML namespace dependant tweaks.
134 . AttrDef_HTML_Pixels now takes a single construction parameter, pixels.
135 . ConfigSchema data-structure heavily optimized; on average it uses a third
136 the memory it did previously. The interface has changed accordingly,
137 consult changes to HTMLPurifier_Config for details.
138 . Variable parsing types now are magic integers instead of strings
139 . Added benchmark for ConfigSchema
140 . HTMLPurifier_Generator requires $config and $context parameters. If you
141 don't know what they should be, use HTMLPurifier_Config::createDefault()
142 and new HTMLPurifier_Context().
143 . Printers now properly distinguish between output configuration, and
144 target configuration. This is not applicable to scripts using
145 the Printers for HTML Purifier related tasks.
146 . HTML/CSS Printers must be primed with prepareGenerator($gen_config), otherwise
147 fatal errors will ensue.
148 . URIFilter->prepare can return false in order to abort loading of the filter
149 . Factory for AttrDef_URI implemented, URI#embedded to indicate URI that embeds
150 an external resource.
151 . %URI.Munge functionality factored out into a post-filter class.
152 . Added CurrentCSSProperty context variable during CSS validation
154 3.1.0, released 2008-05-18
155 # Unnecessary references to objects (vestiges of PHP4) removed from method
156 signatures. The following methods do not need references when assigning from
157 them and will result in E_STRICT errors if you try:
158 + HTMLPurifier_Config->get*Definition() [* = HTML, CSS]
159 + HTMLPurifier_ConfigSchema::instance()
160 + HTMLPurifier_DefinitionCacheFactory::instance()
161 + HTMLPurifier_DefinitionCacheFactory->create()
162 + HTMLPurifier_DoctypeRegistry->register()
163 + HTMLPurifier_DoctypeRegistry->get()
164 + HTMLPurifier_HTMLModule->addElement()
165 + HTMLPurifier_HTMLModule->addBlankElement()
166 + HTMLPurifier_LanguageFactory::instance()
167 # Printer_ConfigForm's get*() functions were static-ified
168 # %HTML.ForbiddenAttributes requires attribute declarations to be in the
169 form of tag@attr, NOT tag.attr (which will throw an error and won't do
170 anything). This is for forwards compatibility with XML; you'd do best
171 to migrate an %HTML.AllowedAttributes directives to this syntax too.
172 ! Allow index to be false for config from form creation
173 ! Added HTMLPurifier::VERSION constant
174 ! Commas, not dashes, used for serializer IDs. This change is forwards-compatible
175 and allows for version numbers like "3.1.0-dev".
176 ! %HTML.Allowed deals gracefully with whitespace anywhere, anytime!
177 ! HTML Purifier's URI handling is a lot more robust, with much stricter
178 validation checks and better percent encoding handling. Thanks Gareth Heyes
179 for indicating security vulnerabilities from lax percent encoding.
180 ! Bootstrap autoloader deals more robustly with classes that don't exist,
181 preventing class_exists($class, true) from barfing.
182 - InterchangeBuilder now alphabetizes its lists
183 - Validation error in configdoc output fixed
184 - Iconv and other encoding errors muted even with custom error handlers that
185 do not honor error_reporting
186 - Add protection against imagecrash attack with CSS height/width
187 - HTMLPurifier::instance() created for consistency, is equivalent to getInstance()
188 - Fixed and revamped broken ConfigForm smoketest
189 - Bug with bool/null fields in Printer_ConfigForm fixed
190 - Bug with global forbidden attributes fixed
191 - Improved error messages for allowed and forbidden HTML elements and attributes
192 - Missing (or null) in configdoc documentation restored
193 - If DOM throws and exception during parsing with PH5P (occurs in newer versions
194 of DOM), HTML Purifier punts to DirectLex
195 - Fatal error with unserialization of ScriptRequired
196 - Created directories are now chmod'ed properly
197 - Fixed bug with fallback languages in LanguageFactory
198 - Standalone testing setup properly with autoload
199 . Out-of-date documentation revised
200 . UTF-8 encoding check optimization as suggested by Diego
201 . HTMLPurifier_Error removed in favor of exceptions
202 . More copy() function removed; should use clone instead
203 . More extensive unit tests for HTMLDefinition
204 . assertPurification moved to central harness
205 . HTMLPurifier_Generator accepts $config and $context parameters during
206 instantiation, not runtime
207 . Double-quotes outside of attribute values are now unescaped
209 3.1.0rc1, released 2008-04-22
210 # Autoload support added. Internal require_once's removed in favor of an
211 explicit require list or autoloading. To use HTML Purifier,
212 you must now either use HTMLPurifier.auto.php
213 or HTMLPurifier.includes.php; setting the include path and including
214 HTMLPurifier.php is insufficient--in such cases include HTMLPurifier.autoload.php
215 as well to register our autoload handler (or modify your autoload function
216 to check HTMLPurifier_Bootstrap::getPath($class)). You can also use
217 HTMLPurifier.safe-includes.php for a less performance friendly but more
218 user-friendly library load.
219 # HTMLPurifier_ConfigSchema static functions are officially deprecated. Schema
220 information is stored in the ConfigSchema directory, and the
221 maintenance/generate-schema-cache.php generates the schema.ser file, which
222 is now instantiated. Support for userland schema changes coming soon!
223 # HTMLPurifier_Config will now throw E_USER_NOTICE when you use a directive
224 alias; to get rid of these errors just modify your configuration to use
225 the new directive name.
226 # HTMLPurifier->addFilter is deprecated; built-in filters can now be
227 enabled using %Filter.$filter_name or by setting your own filters using
229 # Directive-level safety properties superceded in favor of module-level
230 safety. Internal method HTMLModule->addElement() has changed, although
231 the externally visible HTMLDefinition->addElement has *not* changed.
232 ! Extra utility classes for testing and non-library operations can
233 be found in extras/. Specifically, these are FSTools and ConfigDoc.
234 You may find a use for these in your own project, but right now they
235 are highly experimental and volatile.
236 ! Integration with PHPT allows for automated smoketests
237 ! Limited support for proprietary HTML elements, namely <marquee>, sponsored
238 by Chris. You can enable them with %HTML.Proprietary if your client
240 ! Support for !important CSS cascade modifier. By default, this will be stripped
241 from CSS, but you can enable it using %CSS.AllowImportant
242 ! Support for display and visibility CSS properties added, set %CSS.AllowTricky
244 ! HTML Purifier now has its own Exception hierarchy under HTMLPurifier_Exception.
245 Developer error (not enduser error) can cause these to be triggered.
246 ! Experimental kses() wrapper introduced with HTMLPurifier.kses.php
247 ! Finally %CSS.AllowedProperties for tweaking allowed CSS properties without
248 mucking around with HTMLPurifier_CSSDefinition
249 ! ConfigDoc output has been enhanced with version and deprecation info.
250 ! %HTML.ForbiddenAttributes and %HTML.ForbiddenElements implemented.
251 - Autoclose now operates iteratively, i.e. <span><span><div> now has
252 both span tags closed.
253 - Various HTMLPurifier_Config convenience functions now accept another parameter
254 $schema which defines what HTMLPurifier_ConfigSchema to use besides the
256 - Fix bug with trusted script handling in libxml versions later than 2.6.28.
257 - Fix bug in ExtractStyleBlocks with comments in style tags
258 - Fix bug in comment parsing for DirectLex
259 - Flush output now displayed when in command line mode for unit tester
260 - Fix bug with rgb(0, 1, 2) color syntax with spaces inside shorthand syntax
261 - HTMLPurifier_HTMLDefinition->addAttribute can now be called multiple times
262 on the same element without emitting errors.
263 - Fixed fatal error in PH5P lexer with invalid tag names
264 . Plugins now get their own changelogs according to project conventions.
265 . Convert tokens to use instanceof, reducing memory footprint and
266 improving comparison speed.
267 . Dry runs now supported in SimpleTest; testing facilities improved
268 . Bootstrap class added for handling autoloading functionality
269 . Implemented recursive glob at FSTools->globr
270 . ConfigSchema now has instance methods for all corresponding define*
272 . A couple of new historical maintenance scripts were added.
273 . HTMLPurifier/HTMLModule/Tidy/XHTMLAndHTML4.php split into two files
274 . tests/index.php can now be run from any directory.
275 . HTMLPurifier_Token subclasses split into seperate files
276 . HTMLPURIFIER_PREFIX now is defined in Bootstrap.php, NOT HTMLPurifier.php
277 . HTMLPURIFIER_PREFIX can now be defined outside of HTML Purifier
278 . New --php=php flag added, allows PHP executable to be specified (command
280 . htmlpurifier_add_test() preferred method to translate test files in to
281 classes, because it handles PHPT files too.
282 . Debugger class is deprecated and will be removed soon.
283 . Command line argument parsing for testing scripts revamped, now --opt value
285 . Smoketests now cleanup after magic quotes
286 . Generator now can output comments (however, comments are still stripped
287 from HTML Purifier output)
288 . HTMLPurifier_ConfigSchema->validate() deprecated in favor of
289 HTMLPurifier_VarParser->parse()
290 . Integers auto-cast into float type by VarParser.
291 . HTMLPURIFIER_STRICT removed; no validation is performed on runtime, only
292 during cache generation
293 . Reordered script calls in maintenance/flush.php
294 . Command line scripts now honor exit codes
295 . When --flush fails in unit testers, abort tests and print message
296 . Improved documentation in docs/dev-flush.html about the maintenance scripts
297 . copy() methods removed in favor of clone keyword
299 3.0.0, released 2008-01-06
300 # HTML Purifier is PHP 5 only! The 2.1.x branch will be maintained
301 until PHP 4 is completely deprecated, but no new features will be added
303 + Visibility declarations added
304 + Constructor methods renamed to __construct()
305 + PHP4 reference cruft removed (in progress)
306 ! CSS properties are now case-insensitive
307 ! DefinitionCacheFactory now can register new implementations
308 ! New HTMLPurifier_Filter_ExtractStyleBlocks for extracting <style> from
309 documents and cleaning their contents up. Requires the CSSTidy library
310 <http://csstidy.sourceforge.net/>. You can access the blocks with the
311 'StyleBlocks' Context variable ($purifier->context->get('StyleBlocks')).
312 The output CSS can also be "scoped" for a specific element, use:
313 %Filter.ExtractStyleBlocksScope
314 ! Experimental support for some proprietary CSS attributes allowed:
315 opacity (and all of the browser-specific equivalents) and scrollbar colors.
316 Enable by setting %CSS.Proprietary to true.
317 - Colors missing # but in hex form will be corrected
318 - CSS Number algorithm improved
319 - Unit testing and multi-testing now on steroids: command lines,
320 XML output, and other goodies now added.
321 . Unit tests for Injector improved
323 + HTMLPurifier_AttrDef_CSS_AlphaValue
324 + HTMLPurifier_AttrDef_CSS_Filter
325 . Multitest now has a file docblock
327 2.1.3, released 2007-11-05
328 ! tests/multitest.php allows you to test multiple versions by running
329 tests/index.php through multiple interpreters using `phpv` shell
330 script (you must provide this script!)
331 - Fixed poor include ordering for Email URI AttrDefs, causes fatal errors
333 - Injector algorithm further refined: off-by-one error regarding skip
334 counts for dormant injectors fixed
335 - Corrective blockquote definition now enabled for HTML 4.01 Strict
336 - Fatal error when <img> tag (or any other element with required attributes)
337 has 'id' attribute fixed, thanks NykO18 for reporting
338 - Fix warning emitted when a non-supported URI scheme is passed to the
339 MakeAbsolute URIFilter, thanks NykO18 (again)
340 - Further refine AutoParagraph injector. Behavior inside of elements
341 allowing paragraph tags clarified: only inline content delimeted by
342 double newlines (not block elements) are paragraphed.
343 - Buggy treatment of end tags of elements that have required attributes
344 fixed (does not manifest on default tag-set)
345 - Spurious internal content reorganization error suppressed
346 - HTMLDefinition->addElement now returns a reference to the created
347 element object, as implied by the documentation
348 - Phorum mod's HTML Purifier help message expanded (unreleased elsewhere)
349 - Fix a theoretical class of infinite loops from DirectLex reported
351 - Work around unnecessary DOMElement type-cast in PH5P that caused errors
353 - Work around PHP 4 SimpleTest lack-of-error complaining for one-time-only
354 HTMLDefinition errors, this may indicate problems with error-collecting
356 - Make ErrorCollectorEMock work in both PHP 4 and PHP 5
357 - Make PH5P work with PHP 5.0 by removing unnecessary array parameter typedef
358 . %Core.AcceptFullDocuments renamed to %Core.ConvertDocumentToFragment
359 to better communicate its purpose
360 . Error unit tests can now specify the expectation of no errors. Future
361 iterations of the harness will be extremely strict about what errors
363 . Extend Injector hooks to allow for more powerful injector routines
364 . HTMLDefinition->addBlankElement created, as according to the HTMLModule
366 . Doxygen configuration file updated, with minor improvements
367 . Test runner now checks for similarly named files in conf/ directory too.
368 . Minor cosmetic change to flush-definition-cache.php: trailing newline is
370 . Maintenance script for generating PH5P patch added, original PH5P source
371 file also added under version control
372 . Full unit test runner script title made more descriptive with PHP version
373 . Updated INSTALL file to state that 4.3.7 is the earliest version we
376 2.1.2, released 2007-09-03
377 ! Implemented Object module for trusted users
378 ! Implemented experimental HTML5 parsing mode using PH5P. To use, add
380 require_once 'HTMLPurifier/Lexer/PH5P.php';
381 $config->set('Core', 'LexerImpl', 'PH5P');
382 Note that this Lexer introduces some classes not in the HTMLPurifier
383 namespace. Also, this is PHP5 only.
384 ! CSS property border-spacing implemented
385 - Fix non-visible parsing error in DirectLex with empty tags that have
386 slashes inside attribute values.
387 - Fix typo in CSS definition: border-collapse:seperate; was incorrectly
388 accepted as valid CSS. Usually non-visible, because this styling is the
389 default for tables in most browsers. Thanks Brett Zamir for pointing
391 - Fix validation errors in configuration form
392 - Hammer out a bunch of edge-case bugs in the standalone distribution
393 - Inclusion reflection removed from URISchemeRegistry; you must manually
394 include any new schema files you wish to use
395 - Numerous typo fixes in documentation thanks to Brett Zamir
396 . Unit test refactoring for one logical test per test function
397 . Config and context parameters in ComplexHarness deprecated: instead, edit
398 the $config and $context member variables
399 . HTML wrapper in DOMLex now takes DTD identifiers into account; doesn't
400 really make a difference, but is good for completeness sake
401 . merge-library.php script refactored for greater code reusability and
404 2.1.1, released 2007-08-04
405 - Fix show-stopper bug in %URI.MakeAbsolute functionality
406 - Fix PHP4 syntax error in standalone version
407 . Add prefix directory to include path for standalone, this prevents
408 other installations from clobbering the standalone's URI schemes
409 . Single test methods can be invoked by prefixing with __only
411 2.1.0, released 2007-08-02
412 # flush-htmldefinition-cache.php superseded in favor of a generic
413 flush-definition-cache.php script, you can clear a specific cache
414 by passing its name as a parameter to the script
415 ! Phorum mod implemented for HTML Purifier
416 ! With %Core.AggressivelyFixLt, <3 and similar emoticons no longer
417 trigger HTML removal in PHP5 (DOMLex). This directive is not necessary
418 for PHP4 (DirectLex).
419 ! Standalone file now available, which greatly reduces the amount of
420 includes (although there are still a few files that reside in the
422 ! Relative URIs can now be transformed into their absolute equivalents
423 using %URI.Base and %URI.MakeAbsolute
424 ! Ruby implemented for XHTML 1.1
425 ! You can now define custom URI filtering behavior, see enduser-uri-filter.html
427 ! UTF-8 font names now supported in CSS
428 - AutoFormatters emit friendly error messages if tags or attributes they
430 - ConfigForm's compactification of directive names is now configurable
431 - AutoParagraph autoformatter algorithm refined after field-testing
432 - XHTML 1.1 now applies XHTML 1.0 Strict cleanup routines, namely
434 - Contents of <style> tags removed by default when tags are removed
435 . HTMLPurifier_Config->getSerial() implemented, this is extremely useful
436 for output cache invalidation
437 . ConfigForm printer now can retrieve CSS and JS files as strings, in
438 case HTML Purifier's directory is not publically accessible
439 . Introduce new text/itext configuration directive values: these represent
440 longer strings that would be more appropriately edited with a textarea
441 . Allow newlines to act as separators for lists, hashes, lookups and
443 . ConfigForm generates textareas instead of text inputs for lists, hashes,
444 lookups, text and itext fields
445 . Hidden element content removal genericized: %Core.HiddenElements can
446 be used to customize this behavior, by default <script> and <style> are
448 . Added HTMLPURIFIER_PREFIX constant, should be used instead of dirname(__FILE__)
449 . Custom ChildDef added to default include list
450 . URIScheme reflection improved: will not attempt to include file if class
451 already exists. May clobber autoload, so I need to keep an eye on it
452 . ConfigSchema heavily optimized, will only collect information and validate
453 definitions when HTMLPURIFIER_SCHEMA_STRICT is true.
454 . AttrDef_URI unit tests and implementation refactored
455 . benchmarks/ directory now protected from public view with .htaccess file;
456 run the tests via command line
457 . URI scheme is munged off if there is no authority and the scheme is the
459 . All unit tests inherit from HTMLPurifier_Harness, not UnitTestCase
460 . Interface for URIScheme changed
461 . Generic URI object to hold components of URI added, most systems involved
462 in URI validation have been migrated to use it
463 . Custom filtering for URIs factored out to URIDefinition interface for
464 maximum extensibility
466 2.0.1, released 2007-06-27
467 ! Tag auto-closing now based on a ChildDef heuristic rather than a
468 manually set auto_close array; some behavior may change
469 ! Experimental AutoFormat functionality added: auto-paragraph and
470 linkify your HTML input by setting %AutoFormat.AutoParagraph and
471 %AutoFormat.Linkify to true
472 ! Newlines normalized internally, and then converted back to the
473 value of PHP_EOL. If this is not desired, set your newline format
474 using %Output.Newline.
475 ! Beta error collection, messages are implemented for the most generic
476 cases involving Lexing or Strategies
477 - Clean up special case code for <script> tags
478 - Reorder includes for DefinitionCache decorators, fixes a possible
480 - Fixed bug where manually modified definitions were not saved via cache
481 (mostly harmless, except for the fact that it would be a little slower)
482 - Configuration objects with different serials do not clobber each
483 others when revision numbers are unequal
484 - Improve Serializer DefinitionCache directory permissions checks
485 - DefinitionCache no longer throws errors when it encounters old
486 serial files that do not conform to the current style
487 - Stray xmlns attributes removed from configuration documentation
488 - configForm.php smoketest no longer has XSS vulnerability due to
489 unescaped print_r output
490 - Printer adheres to configuration's directives on output format
491 - Fix improperly named form field in ConfigForm printer
492 . Rewire some test-cases to swallow errors rather than expect them
493 . HTMLDefinition printer updated with some of the new attributes
494 . DefinitionCache keys reordered to reflect precedence: version number,
495 hash, then revision number
496 . %Core.DefinitionCache renamed to %Cache.DefinitionImpl
497 . Interlinking in configuration documentation added using
498 Injector_PurifierLinkify
499 . Directives now keep track of aliases to themselves
500 . Error collector now requires a severity to be passed, use PHP's internal
501 error constants for this
502 . HTMLPurifier_Config::getAllowedDirectivesForForm implemented, allows
503 much easier selective embedding of configuration values
504 . Doctype objects now accept public and system DTD identifiers
505 . %HTML.Doctype is now constrained by specific values, to specify a custom
506 doctype use new %HTML.CustomDoctype
507 . ConfigForm truncates long directives to keep the form small, and does
508 not re-output namespaces
510 2.0.0, released 2007-06-20
511 # Completely refactored HTMLModuleManager, decentralizing safety
513 # Transform modules changed to Tidy modules, which offer more flexibility
514 and better modularization
515 # Configuration object now finalizes itself when a read operation is
516 performed on it, ensuring that its internal state stays consistent.
517 To revert this behavior, you can set the $autoFinalize member variable
518 off, but it's not recommended.
519 # New compact syntax for AttrDef objects that can be used to instantiate
520 new objects via make()
521 # Definitions (esp. HTMLDefinition) are now cached for a significant
522 performance boost. You can disable caching by setting %Core.DefinitionCache
523 to null. You CANNOT edit raw definitions without setting the corresponding
524 DefinitionID directive (%HTML.DefinitionID for HTMLDefinition).
525 # Contents between <script> tags are now completely removed if <script>
527 # Prototype-declarations for Lexer removed in favor of configuration
528 determination of Lexer implementations.
529 ! HTML Purifier now works in PHP 4.3.2.
530 ! Configuration form-editing API makes tweaking HTMLPurifier_Config a
532 ! Configuration directives that accept hashes now allow new string
533 format: key1:value1,key2:value2
534 ! ConfigDoc now factored into OOP design
535 ! All deprecated elements now natively supported
536 ! Implement TinyMCE styled whitelist specification format in
538 ! Config object gives more friendly error messages when things go wrong
539 ! Advanced API implemented: easy functions for creating elements (addElement)
540 and attributes (addAttribute) on HTMLDefinition
541 ! Add native support for required attributes
542 - Deprecated and removed EnableRedundantUTF8Cleaning. It didn't even work!
543 - DOMLex will not emit errors when a custom error handler that does not
544 honor error_reporting is used
545 - StrictBlockquote child definition refrains from wrapping whitespace
547 - Bug resulting from tag transforms to non-allowed elements fixed
548 - ChildDef_Custom's regex generation has been improved, removing several
550 . Unit test for ElementDef created, ElementDef behavior modified to
552 . Added convenience functions for HTMLModule constructors
553 . AttrTypes now has accessor functions that should be used instead
554 of directly manipulating info
555 . TagTransform_Center deprecated in favor of generic TagTransform_Simple
556 . Add extra protection in AttrDef_URI against phantom Schemes
557 . Doctype object added to HTMLDefinition which describes certain aspects
558 of the operational document type
559 . Lexer is now pre-emptively included, with a conditional include for the
561 . HTMLDefinition and CSSDefinition have a common parent class: Definition.
562 . DirectLex can now track line-numbers
563 . Preliminary error collector is in place, although no code actually reports
565 . Factor out most of ValidateAttributes to new AttrValidator class
567 1.6.1, released 2007-05-05
568 ! Support for more deprecated attributes via transformations:
569 + hspace and vspace in img
570 + size and noshade in hr
573 + align in caption, table, img and hr
574 + type in ul, ol and li
575 ! DirectLex now preserves text in which a < bracket is followed by
576 a non-alphanumeric character. This means that certain emoticons
578 ! %Core.RemoveInvalidImg is now operational, when set to false invalid
579 images will hang around with an empty src
580 ! target attribute in a tag supported, use %Attr.AllowedFrameTargets
582 ! CSS property white-space now allows nowrap (supported in all modern
583 browsers) but not others (which have spotty browser implementations)
584 ! XHTML 1.1 mode now sort-of works without any fatal errors, and
585 lang is now moved over to xml:lang.
586 ! Attribute transformation smoketest available at smoketests/attrTransform.php
587 ! Transformation of font's size attribute now handles super-large numbers
588 - Possibly fatal bug with __autoload() fixed in module manager
589 - Invert HTMLModuleManager->addModule() processing order to check
590 prefixes first and then the literal module
591 - Empty strings get converted to empty arrays instead of arrays with
592 an empty string in them.
593 - Merging in attribute lists now works.
594 . Demo script removed: it has been added to the website's repository
595 . Basic.php script modified to work out of the box
596 . Refactor AttrTransform classes to reduce duplication
597 . AttrTransform_TextAlign axed in favor of a more general
598 AttrTransform_EnumToCSS, refer to HTMLModule/TransformToStrict.php to
599 see how the new equivalent is implemented
600 . Unit tests now use exclusively assertIdentical
602 1.6.0, released 2007-04-01
603 ! Support for most common deprecated attributes via transformations:
604 + bgcolor in td, th, tr and table
607 + width in td, th and hr
609 ! Support for CSS attribute 'height' added
610 ! Support for rel and rev attributes in a tags added, use %Attr.AllowedRel
611 and %Attr.AllowedRev to activate
612 - You can define ID blacklists using regular expressions via
613 %Attr.IDBlacklistRegexp
614 - Error messages are emitted when you attempt to "allow" elements or
615 attributes that HTML Purifier does not support
616 - Fix segfault in unit test. The problem is not very reproduceable and
617 I don't know what causes it, but a six line patch fixed it.
619 1.5.0, released 2007-03-23
620 ! Added a rudimentary I18N and L10N system modeled off MediaWiki. It
621 doesn't actually do anything yet, but keep your eyes peeled.
622 ! docs/enduser-utf8.html explains how to use UTF-8 and HTML Purifier
623 ! Newly structured HTMLDefinition modeled off of XHTML 1.1 modules.
624 I am loathe to release beta quality APIs, but this is exactly that;
625 don't use the internal interfaces if you're not willing to do migration
627 - Allow 'x' subtag in language codes
628 - Fixed buggy chameleon-support for ins and del
629 . Added support for IDREF attributes (i.e. for)
630 . Renamed HTMLPurifier_AttrDef_Class to HTMLPurifier_AttrDef_Nmtokens
631 . Removed context variable ParentType, replaced with IsInline, which
632 is false when you're not inline and an integer of the parent that
633 caused you to become inline when you are (so possibly zero)
634 . Removed ElementDef->type in favor of ElementDef->descendants_are_inline
635 and HTMLDefinition->content_sets
636 . StrictBlockquote now reports what elements its supposed to allow,
637 rather than what it does allow
638 . Removed HTMLDefinition->info_flow_elements in favor of
639 HTMLDefinition->content_sets['Flow']
640 . Removed redundant "exclusionary" definitions from DTD roster
641 . StrictBlockquote now requires a construction parameter as if it
642 were an Required ChildDef, this is the "real" set of allowed elements
643 . AttrDef partitioned into HTML, CSS and URI segments
644 . Modify Youtube filter regexp to be multiline
645 . Require both PHP5 and DOM extension in order to use DOMLex, fixes
646 some edge cases where a DOMDocument class exists in a PHP4 environment
647 due to DOM XML extension.
649 1.4.1, released 2007-01-21
650 ! docs/enduser-youtube.html updated according to new functionality
651 - YouTube IDs can have underscores and dashes
653 1.4.0, released 2007-01-21
654 ! Implemented list-style-image, URIs now allowed in list-style
655 ! Implemented background-image, background-repeat, background-attachment
656 and background-position CSS properties. Shorthand property background
657 supports all of these properties.
658 ! Configuration documentation looks nicer
659 ! Added %Core.EscapeNonASCIICharacters to workaround loss of Unicode
660 characters while %Core.Encoding is set to a non-UTF-8 encoding.
661 ! Support for configuration directive aliases added
662 ! Config object can now be instantiated from ini files
663 ! YouTube preservation code added to the core, with two lines of code
664 you can add it as a filter to your code. See smoketests/preserveYouTube.php
666 ! Moved SLOW to docs/enduser-slow.html and added code examples
667 - Replaced version check with functionality check for DOM (thanks Stephen
669 . Added smoketest 'all.php', which loads all other smoketests via frames
670 . Implemented AttrDef_CSSURI for url(http://google.com) style declarations
671 . Added convenient single test selector form on test runner
673 1.3.2, released 2006-12-25
674 ! HTMLPurifier object now accepts configuration arrays, no need to manually
675 instantiate a configuration object
676 ! Context object now accessible to outside
677 ! Added enduser-youtube.html, explains how to embed YouTube videos. See
678 also corresponding smoketest preserveYouTube.php.
679 ! Added purifyArray(), which takes a list of HTML and purifies it all
680 ! Added static member variable $version to HTML Purifier with PHP-compatible
681 version number string.
682 - Fixed fatal error thrown by upper-cased language attributes
683 - printDefinition.php: added labels, added better clarification
684 . HTMLPurifier_Config::create() added, takes mixed variable and converts into
685 a HTMLPurifier_Config object.
687 1.3.1, released 2006-12-06
688 ! Added HTMLPurifier.func.php stub for a convenient function to call the library
689 - Fixed bug in RemoveInvalidImg code that caused all images to be dropped
690 (thanks to .mario for reporting this)
691 . Standardized all attribute handling variables to attr, made it plural
693 1.3.0, released 2006-11-26
694 # Invalid images are now removed, rather than replaced with a dud
695 <img src="" alt="Invalid image" />. Previous behavior can be restored
696 with new directive %Core.RemoveInvalidImg set to false.
697 ! (X)HTML Strict now supported
698 + Transparently handles inline elements in block context (blockquote)
699 ! Added GET method to demo for easier validation, added 50kb max input size
700 ! New directive %HTML.BlockWrapper, for block-ifying inline elements
701 ! New directive %HTML.Parent, allows you to only allow inline content
702 ! New directives %HTML.AllowedElements and %HTML.AllowedAttributes to let
703 users narrow the set of allowed tags
704 ! <li value="4"> and <ul start="2"> now allowed in loose mode
705 ! New directives %URI.DisableExternalResources and %URI.DisableResources
706 ! New directive %Attr.DisableURI, which eliminates all hyperlinking
707 ! New directive %URI.Munge, munges URI so you can use some sort of redirector
708 service to avoid PageRank leaks or warn users that they are exiting your site.
709 ! Added spiffy new smoketest printDefinition.php, which lets you twiddle with
710 the configuration settings and see how the internal rules are affected.
711 ! New directive %URI.HostBlacklist for blocking links to bad hosts.
712 xssAttacks.php smoketest updated accordingly.
713 - Added missing type to ChildDef_Chameleon
714 - Remove Tidy option from demo if there is not Tidy available
715 . ChildDef_Required guards against empty tags
716 . Lookup table HTMLDefinition->info_flow_elements added
717 . Added peace-of-mind variable initialization to Strategy_FixNesting
718 . Added HTMLPurifier->info_parent_def, parent child processing made special
719 . Added internal documents briefly summarizing future progression of HTML
720 . HTMLPurifier_Config->getBatch($namespace) added
721 . More lenient casting to bool from string in HTMLPurifier_ConfigSchema
722 . Refactored ChildDef classes into their own files
724 1.2.0, released 2006-11-19
725 # ID attributes now disabled by default. New directives:
726 + %HTML.EnableAttrID - restores old behavior by allowing IDs
727 + %Attr.IDPrefix - %Attr.IDBlacklist alternative that munges all user IDs
728 so that they don't collide with your IDs
729 + %Attr.IDPrefixLocal - Same as above, but for when there are multiple
730 instances of user content on the page
731 + Profuse documentation on how to use these available in docs/enduser-id.txt
732 ! Added MODx plugin <http://modxcms.com/forums/index.php/topic,6604.0.html>
733 ! Added percent encoding normalization
734 ! XSS attacks smoketest given facelift
735 ! Configuration documentation now has table of contents
736 ! Added %URI.DisableExternal, which prevents links to external websites. You
737 can also use %URI.Host to permit absolute linking to subdomains
738 ! Non-accessible resources (ex. mailto) blocked from embedded URIs (img src)
739 - Type variable in HTMLDefinition was not being set properly, fixed
740 - Documentation updated
741 + TODO added request Phalanger
742 + TODO added request Native compression
743 + TODO added request Remove redundant tags
744 + TODO added possible plaintext formatter for HTML Purifier documentation
745 + Updated ConfigDoc TODO
746 + Improved inline comments in AttrDef/Class.php, AttrDef/CSS.php
748 + Revamped documentation into HTML, along with misc updates
749 - HTMLPurifier_Context doesn't throw a variable reference error if you attempt
750 to retrieve a non-existent variable
751 . Switched to purify()-wide Context object registry
752 . Refactored unit tests to minimize duplication
753 . XSS attack sheet updated
754 . configdoc.xml now has xml:space attached to default value nodes
755 . Allow configuration directives to permit null values
756 . Cleaned up test-cases to remove unnecessary swallowErrors()
758 1.1.2, released 2006-09-30
759 ! Add HTMLPurifier.auto.php stub file that configures include_path
760 - Documentation updated
761 + INSTALL document rewritten
762 + TODO added semi-lossy conversion
763 + API Doxygen docs' file exclusions updated
764 + Added notes on HTML versus XML attribute whitespace handling
765 + Noted that HTMLPurifier_ChildDef_Custom isn't being used
766 + Noted that config object's definitions are cached versions
767 - Fixed lack of attribute parsing in HTMLPurifier_Lexer_PEARSax3
768 - ftp:// URIs now have their typecodes checked
769 - Hooked up HTMLPurifier_ChildDef_Custom's unit tests (they weren't being run)
770 . Line endings standardized throughout project (svn:eol-style standardized)
771 . Refactored parseData() to general Lexer class
772 . Tester named "HTML Purifier" not "HTMLPurifier"
774 1.1.1, released 2006-09-24
775 ! Configuration option to optionally Tidy up output for indentation to make up
776 for dropped whitespace by DOMLex (pretty-printing for the entire application
777 should be done by a page-wide Tidy)
778 - Various documentation updates
779 - Fixed parse error in configuration documentation script
780 - Fixed fatal error in benchmark scripts, slightly augmented
781 - As far as possible, whitespace is preserved in-between table children
782 - Sample test-settings.php file included
784 1.1.0, released 2006-09-16
785 ! Directive documentation generation using XSLT
786 ! XHTML can now be turned off, output becomes <br>
787 - Made URI validator more forgiving: will ignore leading and trailing
788 quotes, apostrophes and less than or greater than signs.
789 - Enforce alphanumeric namespace and directive names for configuration.
790 - Table child definition made more flexible, will fix up poorly ordered elements
791 . Renamed ConfigDef to ConfigSchema
793 1.0.1, released 2006-09-04
794 - Fixed slight bug in DOMLex attribute parsing
795 - Fixed rejection of case-insensitive configuration values when there is a
796 set of allowed values. This manifested in %Core.Encoding.
797 - Fixed rejection of inline style declarations that had lots of extra
798 space in them. This manifested in TinyMCE.
800 1.0.0, released 2006-09-01
801 ! Shorthand CSS properties implemented: font, border, background, list-style
802 ! Basic color keywords translated into hexadecimal values
803 ! Table CSS properties implemented
804 ! Support for charsets other than UTF-8 (defined by iconv)
805 ! Malformed UTF-8 and non-SGML character detection and cleaning implemented
806 - Fixed broken numeric entity conversion
807 - API documentation completed
808 . (HTML|CSS)Definition de-singleton-ized
810 1.0.0beta, released 2006-08-16
811 ! First public release, most functionality implemented. Notable omissions are:
812 + Shorthand CSS properties
813 + Table CSS properties
814 + Deprecated attribute transformations