:arrow_up: Update HTML Purifier library.

Updated HTML Purifier from 4.6.0 to 4.9.2 with better PHP7 compatibility.
Used composer to manage this library.

1 files changed, 0 insertions, 459 deletions

diff --git a/library/HTMLPurifier/HTMLModuleManager.php b/library/HTMLPurifier/HTMLModuleManager.php
deleted file mode 100644
index f3a17cb03..000000000
--- a/library/HTMLPurifier/HTMLModuleManager.php
+++ /dev/null
@@ -1,459 +0,0 @@
-<?php
-
-class HTMLPurifier_HTMLModuleManager
-{
-
-    /**
-     * @type HTMLPurifier_DoctypeRegistry
-     */
-    public $doctypes;
-
-    /**
-     * Instance of current doctype.
-     * @type string
-     */
-    public $doctype;
-
-    /**
-     * @type HTMLPurifier_AttrTypes
-     */
-    public $attrTypes;
-
-    /**
-     * Active instances of modules for the specified doctype are
-     * indexed, by name, in this array.
-     * @type HTMLPurifier_HTMLModule[]
-     */
-    public $modules = array();
-
-    /**
-     * Array of recognized HTMLPurifier_HTMLModule instances,
-     * indexed by module's class name. This array is usually lazy loaded, but a
-     * user can overload a module by pre-emptively registering it.
-     * @type HTMLPurifier_HTMLModule[]
-     */
-    public $registeredModules = array();
-
-    /**
-     * List of extra modules that were added by the user
-     * using addModule(). These get unconditionally merged into the current doctype, whatever
-     * it may be.
-     * @type HTMLPurifier_HTMLModule[]
-     */
-    public $userModules = array();
-
-    /**
-     * Associative array of element name to list of modules that have
-     * definitions for the element; this array is dynamically filled.
-     * @type array
-     */
-    public $elementLookup = array();
-
-    /**
-     * List of prefixes we should use for registering small names.
-     * @type array
-     */
-    public $prefixes = array('HTMLPurifier_HTMLModule_');
-
-    /**
-     * @type HTMLPurifier_ContentSets
-     */
-    public $contentSets;
-
-    /**
-     * @type HTMLPurifier_AttrCollections
-     */
-    public $attrCollections;
-
-    /**
-     * If set to true, unsafe elements and attributes will be allowed.
-     * @type bool
-     */
-    public $trusted = false;
-
-    public function __construct()
-    {
-        // editable internal objects
-        $this->attrTypes = new HTMLPurifier_AttrTypes();
-        $this->doctypes  = new HTMLPurifier_DoctypeRegistry();
-
-        // setup basic modules
-        $common = array(
-            'CommonAttributes', 'Text', 'Hypertext', 'List',
-            'Presentation', 'Edit', 'Bdo', 'Tables', 'Image',
-            'StyleAttribute',
-            // Unsafe:
-            'Scripting', 'Object', 'Forms',
-            // Sorta legacy, but present in strict:
-            'Name',
-        );
-        $transitional = array('Legacy', 'Target', 'Iframe');
-        $xml = array('XMLCommonAttributes');
-        $non_xml = array('NonXMLCommonAttributes');
-
-        // setup basic doctypes
-        $this->doctypes->register(
-            'HTML 4.01 Transitional',
-            false,
-            array_merge($common, $transitional, $non_xml),
-            array('Tidy_Transitional', 'Tidy_Proprietary'),
-            array(),
-            '-//W3C//DTD HTML 4.01 Transitional//EN',
-            'http://www.w3.org/TR/html4/loose.dtd'
-        );
-
-        $this->doctypes->register(
-            'HTML 4.01 Strict',
-            false,
-            array_merge($common, $non_xml),
-            array('Tidy_Strict', 'Tidy_Proprietary', 'Tidy_Name'),
-            array(),
-            '-//W3C//DTD HTML 4.01//EN',
-            'http://www.w3.org/TR/html4/strict.dtd'
-        );
-
-        $this->doctypes->register(
-            'XHTML 1.0 Transitional',
-            true,
-            array_merge($common, $transitional, $xml, $non_xml),
-            array('Tidy_Transitional', 'Tidy_XHTML', 'Tidy_Proprietary', 'Tidy_Name'),
-            array(),
-            '-//W3C//DTD XHTML 1.0 Transitional//EN',
-            'http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd'
-        );
-
-        $this->doctypes->register(
-            'XHTML 1.0 Strict',
-            true,
-            array_merge($common, $xml, $non_xml),
-            array('Tidy_Strict', 'Tidy_XHTML', 'Tidy_Strict', 'Tidy_Proprietary', 'Tidy_Name'),
-            array(),
-            '-//W3C//DTD XHTML 1.0 Strict//EN',
-            'http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd'
-        );
-
-        $this->doctypes->register(
-            'XHTML 1.1',
-            true,
-            // Iframe is a real XHTML 1.1 module, despite being
-            // "transitional"!
-            array_merge($common, $xml, array('Ruby', 'Iframe')),
-            array('Tidy_Strict', 'Tidy_XHTML', 'Tidy_Proprietary', 'Tidy_Strict', 'Tidy_Name'), // Tidy_XHTML1_1
-            array(),
-            '-//W3C//DTD XHTML 1.1//EN',
-            'http://www.w3.org/TR/xhtml11/DTD/xhtml11.dtd'
-        );
-
-    }
-
-    /**
-     * Registers a module to the recognized module list, useful for
-     * overloading pre-existing modules.
-     * @param $module Mixed: string module name, with or without
-     *                HTMLPurifier_HTMLModule prefix, or instance of
-     *                subclass of HTMLPurifier_HTMLModule.
-     * @param $overload Boolean whether or not to overload previous modules.
-     *                  If this is not set, and you do overload a module,
-     *                  HTML Purifier will complain with a warning.
-     * @note This function will not call autoload, you must instantiate
-     *       (and thus invoke) autoload outside the method.
-     * @note If a string is passed as a module name, different variants
-     *       will be tested in this order:
-     *          - Check for HTMLPurifier_HTMLModule_$name
-     *          - Check all prefixes with $name in order they were added
-     *          - Check for literal object name
-     *          - Throw fatal error
-     *       If your object name collides with an internal class, specify
-     *       your module manually. All modules must have been included
-     *       externally: registerModule will not perform inclusions for you!
-     */
-    public function registerModule($module, $overload = false)
-    {
-        if (is_string($module)) {
-            // attempt to load the module
-            $original_module = $module;
-            $ok = false;
-            foreach ($this->prefixes as $prefix) {
-                $module = $prefix . $original_module;
-                if (class_exists($module)) {
-                    $ok = true;
-                    break;
-                }
-            }
-            if (!$ok) {
-                $module = $original_module;
-                if (!class_exists($module)) {
-                    trigger_error(
-                        $original_module . ' module does not exist',
-                        E_USER_ERROR
-                    );
-                    return;
-                }
-            }
-            $module = new $module();
-        }
-        if (empty($module->name)) {
-            trigger_error('Module instance of ' . get_class($module) . ' must have name');
-            return;
-        }
-        if (!$overload && isset($this->registeredModules[$module->name])) {
-            trigger_error('Overloading ' . $module->name . ' without explicit overload parameter', E_USER_WARNING);
-        }
-        $this->registeredModules[$module->name] = $module;
-    }
-
-    /**
-     * Adds a module to the current doctype by first registering it,
-     * and then tacking it on to the active doctype
-     */
-    public function addModule($module)
-    {
-        $this->registerModule($module);
-        if (is_object($module)) {
-            $module = $module->name;
-        }
-        $this->userModules[] = $module;
-    }
-
-    /**
-     * Adds a class prefix that registerModule() will use to resolve a
-     * string name to a concrete class
-     */
-    public function addPrefix($prefix)
-    {
-        $this->prefixes[] = $prefix;
-    }
-
-    /**
-     * Performs processing on modules, after being called you may
-     * use getElement() and getElements()
-     * @param HTMLPurifier_Config $config
-     */
-    public function setup($config)
-    {
-        $this->trusted = $config->get('HTML.Trusted');
-
-        // generate
-        $this->doctype = $this->doctypes->make($config);
-        $modules = $this->doctype->modules;
-
-        // take out the default modules that aren't allowed
-        $lookup = $config->get('HTML.AllowedModules');
-        $special_cases = $config->get('HTML.CoreModules');
-
-        if (is_array($lookup)) {
-            foreach ($modules as $k => $m) {
-                if (isset($special_cases[$m])) {
-                    continue;
-                }
-                if (!isset($lookup[$m])) {
-                    unset($modules[$k]);
-                }
-            }
-        }
-
-        // custom modules
-        if ($config->get('HTML.Proprietary')) {
-            $modules[] = 'Proprietary';
-        }
-        if ($config->get('HTML.SafeObject')) {
-            $modules[] = 'SafeObject';
-        }
-        if ($config->get('HTML.SafeEmbed')) {
-            $modules[] = 'SafeEmbed';
-        }
-        if ($config->get('HTML.SafeScripting') !== array()) {
-            $modules[] = 'SafeScripting';
-        }
-        if ($config->get('HTML.Nofollow')) {
-            $modules[] = 'Nofollow';
-        }
-        if ($config->get('HTML.TargetBlank')) {
-            $modules[] = 'TargetBlank';
-        }
-
-        // merge in custom modules
-        $modules = array_merge($modules, $this->userModules);
-
-        foreach ($modules as $module) {
-            $this->processModule($module);
-            $this->modules[$module]->setup($config);
-        }
-
-        foreach ($this->doctype->tidyModules as $module) {
-            $this->processModule($module);
-            $this->modules[$module]->setup($config);
-        }
-
-        // prepare any injectors
-        foreach ($this->modules as $module) {
-            $n = array();
-            foreach ($module->info_injector as $injector) {
-                if (!is_object($injector)) {
-                    $class = "HTMLPurifier_Injector_$injector";
-                    $injector = new $class;
-                }
-                $n[$injector->name] = $injector;
-            }
-            $module->info_injector = $n;
-        }
-
-        // setup lookup table based on all valid modules
-        foreach ($this->modules as $module) {
-            foreach ($module->info as $name => $def) {
-                if (!isset($this->elementLookup[$name])) {
-                    $this->elementLookup[$name] = array();
-                }
-                $this->elementLookup[$name][] = $module->name;
-            }
-        }
-
-        // note the different choice
-        $this->contentSets = new HTMLPurifier_ContentSets(
-            // content set assembly deals with all possible modules,
-            // not just ones deemed to be "safe"
-            $this->modules
-        );
-        $this->attrCollections = new HTMLPurifier_AttrCollections(
-            $this->attrTypes,
-            // there is no way to directly disable a global attribute,
-            // but using AllowedAttributes or simply not including
-            // the module in your custom doctype should be sufficient
-            $this->modules
-        );
-    }
-
-    /**
-     * Takes a module and adds it to the active module collection,
-     * registering it if necessary.
-     */
-    public function processModule($module)
-    {
-        if (!isset($this->registeredModules[$module]) || is_object($module)) {
-            $this->registerModule($module);
-        }
-        $this->modules[$module] = $this->registeredModules[$module];
-    }
-
-    /**
-     * Retrieves merged element definitions.
-     * @return Array of HTMLPurifier_ElementDef
-     */
-    public function getElements()
-    {
-        $elements = array();
-        foreach ($this->modules as $module) {
-            if (!$this->trusted && !$module->safe) {
-                continue;
-            }
-            foreach ($module->info as $name => $v) {
-                if (isset($elements[$name])) {
-                    continue;
-                }
-                $elements[$name] = $this->getElement($name);
-            }
-        }
-
-        // remove dud elements, this happens when an element that
-        // appeared to be safe actually wasn't
-        foreach ($elements as $n => $v) {
-            if ($v === false) {
-                unset($elements[$n]);
-            }
-        }
-
-        return $elements;
-
-    }
-
-    /**
-     * Retrieves a single merged element definition
-     * @param string $name Name of element
-     * @param bool $trusted Boolean trusted overriding parameter: set to true
-     *                 if you want the full version of an element
-     * @return HTMLPurifier_ElementDef Merged HTMLPurifier_ElementDef
-     * @note You may notice that modules are getting iterated over twice (once
-     *       in getElements() and once here). This
-     *       is because
-     */
-    public function getElement($name, $trusted = null)
-    {
-        if (!isset($this->elementLookup[$name])) {
-            return false;
-        }
-
-        // setup global state variables
-        $def = false;
-        if ($trusted === null) {
-            $trusted = $this->trusted;
-        }
-
-        // iterate through each module that has registered itself to this
-        // element
-        foreach ($this->elementLookup[$name] as $module_name) {
-            $module = $this->modules[$module_name];
-
-            // refuse to create/merge from a module that is deemed unsafe--
-            // pretend the module doesn't exist--when trusted mode is not on.
-            if (!$trusted && !$module->safe) {
-                continue;
-            }
-
-            // clone is used because, ideally speaking, the original
-            // definition should not be modified. Usually, this will
-            // make no difference, but for consistency's sake
-            $new_def = clone $module->info[$name];
-
-            if (!$def && $new_def->standalone) {
-                $def = $new_def;
-            } elseif ($def) {
-                // This will occur even if $new_def is standalone. In practice,
-                // this will usually result in a full replacement.
-                $def->mergeIn($new_def);
-            } else {
-                // :TODO:
-                // non-standalone definitions that don't have a standalone
-                // to merge into could be deferred to the end
-                // HOWEVER, it is perfectly valid for a non-standalone
-                // definition to lack a standalone definition, even
-                // after all processing: this allows us to safely
-                // specify extra attributes for elements that may not be
-                // enabled all in one place.  In particular, this might
-                // be the case for trusted elements.  WARNING: care must
-                // be taken that the /extra/ definitions are all safe.
-                continue;
-            }
-
-            // attribute value expansions
-            $this->attrCollections->performInclusions($def->attr);
-            $this->attrCollections->expandIdentifiers($def->attr, $this->attrTypes);
-
-            // descendants_are_inline, for ChildDef_Chameleon
-            if (is_string($def->content_model) &&
-                strpos($def->content_model, 'Inline') !== false) {
-                if ($name != 'del' && $name != 'ins') {
-                    // this is for you, ins/del
-                    $def->descendants_are_inline = true;
-                }
-            }
-
-            $this->contentSets->generateChildDef($def, $module);
-        }
-
-        // This can occur if there is a blank definition, but no base to
-        // mix it in with
-        if (!$def) {
-            return false;
-        }
-
-        // add information on required attributes
-        foreach ($def->attr as $attr_name => $attr_def) {
-            if ($attr_def->required) {
-                $def->required_attr[] = $attr_name;
-            }
-        }
-        return $def;
-    }
-}
-
-// vim: et sw=4 sts=4