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// Copyright 2024 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef THIRD_PARTY_BLINK_RENDERER_CORE_SANITIZER_SANITIZER_H_
#define THIRD_PARTY_BLINK_RENDERER_CORE_SANITIZER_SANITIZER_H_
#include "third_party/blink/renderer/bindings/core/v8/v8_sanitizer_presets.h"
#include "third_party/blink/renderer/core/dom/qualified_name.h"
#include "third_party/blink/renderer/core/sanitizer/sanitizer_names.h"
#include "third_party/blink/renderer/platform/bindings/script_wrappable.h"
namespace blink {
class Element;
class ExceptionState;
class Node;
class QualifiedName;
class SanitizerConfig;
class SanitizerElementNamespace;
class V8UnionSanitizerConfigOrSanitizerPresets;
class V8UnionSanitizerAttributeNamespaceOrString;
class V8UnionSanitizerElementNamespaceWithAttributesOrString;
class V8UnionSanitizerElementNamespaceOrString;
class CORE_EXPORT Sanitizer final : public ScriptWrappable {
DEFINE_WRAPPERTYPEINFO();
public:
// Called by WebIDL for Sanitizer constructor, new Sanitizer(xxx).
static Sanitizer* Create(const V8UnionSanitizerConfigOrSanitizerPresets*,
ExceptionState&);
// Called by Sanitizer API, to implement setHTML / setHTMLUnsafe & friends.
static Sanitizer* Create(const SanitizerConfig*, bool safe, ExceptionState&);
static Sanitizer* Create(const V8SanitizerPresets::Enum, ExceptionState&);
Sanitizer() = default;
~Sanitizer() override = default;
Sanitizer(const Sanitizer&) = delete; // Use MakeGarbageCollected + setFrom.
// This constructor is meant to be used by generated code to build up the
// Sanitizer builtins. You probably don't want to use it in regular code.
Sanitizer(HashSet<QualifiedName>,
HashSet<QualifiedName>,
HashSet<QualifiedName>,
HashSet<QualifiedName>,
HashSet<QualifiedName>,
bool,
bool);
// API methods:
void allowElement(
const V8UnionSanitizerElementNamespaceWithAttributesOrString*);
void removeElement(const V8UnionSanitizerElementNamespaceOrString*);
void replaceElementWithChildren(
const V8UnionSanitizerElementNamespaceOrString*);
void allowAttribute(const V8UnionSanitizerAttributeNamespaceOrString*);
void removeAttribute(const V8UnionSanitizerAttributeNamespaceOrString*);
void setComments(bool);
void setDataAttributes(bool);
void removeUnsafe();
SanitizerConfig* get() const;
// Internal versions of API methods that use Blink types (rather than IDL):
void AllowElement(const QualifiedName&);
void RemoveElement(const QualifiedName&);
void ReplaceElement(const QualifiedName&);
void AllowAttribute(const QualifiedName&);
void RemoveAttribute(const QualifiedName&);
// Accessors, mainly for testing:
const SanitizerNameSet& allow_elements() const { return allow_elements_; }
const SanitizerNameSet& remove_elements() const { return remove_elements_; }
const SanitizerNameSet& replace_elements() const { return replace_elements_; }
const SanitizerNameSet& allow_attrs() const { return allow_attrs_; }
const SanitizerNameSet& remove_attrs() const { return remove_attrs_; }
const SanitizerNameMap& allow_attrs_per_element() const {
return allow_attrs_per_element_;
}
const SanitizerNameMap& remove_attrs_per_element() const {
return remove_attrs_per_element_;
}
bool allow_data_attrs() const { return allow_data_attrs_; }
bool allow_comments() const { return allow_comments_; }
// The core methods (not directly exposed to the API): Recursively sanitize
// the node according to the current config.
void SanitizeSafe(Node* node) const;
void SanitizeUnsafe(Node* node) const;
private:
// Helper methods for SanitizeSafe/Unsafe:
void Sanitize(Node* node, bool safe) const;
void SanitizeElement(Element* element) const;
void SanitizeJavascriptNavigationAttributes(Element* element,
bool safe) const;
void SanitizeTemplate(Node* node, bool safe) const;
// Helper for copy constructor and Create: Convert from IDL representation
// to internal.
bool setFrom(const SanitizerConfig*, bool safe);
void setFrom(const Sanitizer&);
// Helpers for get(): Convert from internal to IDL representation.
QualifiedName getFrom(const String& name, const String& namespaceURI) const;
QualifiedName getFrom(const SanitizerElementNamespace*) const;
QualifiedName getFrom(
const V8UnionSanitizerElementNamespaceWithAttributesOrString*) const;
QualifiedName getFrom(const V8UnionSanitizerElementNamespaceOrString*) const;
QualifiedName getFrom(
const V8UnionSanitizerAttributeNamespaceOrString*) const;
// Helpers for setFrom(SanitizerConfig*, ...): Count items in config.
// These are used for error checking.
int countItemsInSanitizerConfig(const SanitizerConfig*) const;
int countItemsInSanitizerElement(
const V8UnionSanitizerElementNamespaceWithAttributesOrString*) const;
int countItemsInConfig() const;
// These members are Blink-representation of SanitizerConfig, and the core
// data structure(s) for Sanitizer. We'll try to keep them simple (sets and
// maps), and to use QualifiedName, since that's an efficient-to-compare
// implementation.
SanitizerNameSet allow_elements_;
SanitizerNameSet remove_elements_;
SanitizerNameSet replace_elements_;
SanitizerNameSet allow_attrs_;
SanitizerNameSet remove_attrs_;
SanitizerNameMap allow_attrs_per_element_;
SanitizerNameMap remove_attrs_per_element_;
bool allow_data_attrs_;
bool allow_comments_;
};
} // namespace blink
#endif // THIRD_PARTY_BLINK_RENDERER_CORE_SANITIZER_SANITIZER_H_
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