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/*
* Copyright (C) 2024 Apple Inc. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS CONTRIBUTORS ``AS IS''
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
* THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS
* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
* THE POSSIBILITY OF SUCH DAMAGE.
*/
#include "config.h"
#include "URLPatternComponent.h"
#include "ScriptExecutionContext.h"
#include "URLPatternCanonical.h"
#include "URLPatternParser.h"
#include "URLPatternResult.h"
#include <JavaScriptCore/JSCJSValue.h>
#include <JavaScriptCore/JSString.h>
#include <JavaScriptCore/RegExpObject.h>
namespace WebCore {
using namespace JSC;
namespace URLPatternUtilities {
URLPatternComponent::URLPatternComponent(String&& patternString, JSC::Strong<JSC::RegExp>&& regex, Vector<String>&& groupNameList, bool hasRegexpGroupsFromPartsList)
: m_patternString(WTFMove(patternString))
, m_regularExpression(WTFMove(regex))
, m_groupNameList(WTFMove(groupNameList))
, m_hasRegexGroupsFromPartList(hasRegexpGroupsFromPartsList)
{
}
// https://urlpattern.spec.whatwg.org/#compile-a-component
ExceptionOr<URLPatternComponent> URLPatternComponent::compile(Ref<JSC::VM> vm, StringView input, EncodingCallbackType type, const URLPatternStringOptions& options)
{
auto maybePartList = URLPatternParser::parse(input, options, type);
if (maybePartList.hasException())
return maybePartList.releaseException();
Vector<Part> partList = maybePartList.releaseReturnValue();
auto [regularExpressionString, nameList] = generateRegexAndNameList(partList, options);
OptionSet<JSC::Yarr::Flags> flags = { JSC::Yarr::Flags::UnicodeSets };
if (options.ignoreCase)
flags.add(JSC::Yarr::Flags::IgnoreCase);
JSC::RegExp* regularExpression = JSC::RegExp::create(vm, regularExpressionString, flags);
if (!regularExpression->isValid())
return Exception { ExceptionCode::TypeError, "Unable to create RegExp object regular expression from provided URLPattern string."_s };
String patternString = generatePatternString(partList, options);
bool hasRegexGroups = partList.containsIf([](auto& part) {
return part.type == PartType::Regexp;
});
return URLPatternComponent { WTFMove(patternString), JSC::Strong<JSC::RegExp> { vm, regularExpression }, WTFMove(nameList), hasRegexGroups };
}
// https://urlpattern.spec.whatwg.org/#protocol-component-matches-a-special-scheme
bool URLPatternComponent::matchSpecialSchemeProtocol(ScriptExecutionContext& context) const
{
Ref vm = context.vm();
JSC::JSLockHolder lock(vm);
static constexpr std::array specialSchemeList { "ftp"_s, "file"_s, "http"_s, "https"_s, "ws"_s, "wss"_s };
auto contextObject = context.globalObject();
if (!contextObject)
return false;
auto protocolRegex = JSC::RegExpObject::create(vm, contextObject->regExpStructure(), m_regularExpression.get(), true);
auto isSchemeMatch = std::find_if(specialSchemeList.begin(), specialSchemeList.end(), [context = Ref { context }, &vm, &protocolRegex](const String& scheme) {
auto maybeMatch = protocolRegex->exec(context->globalObject(), JSC::jsString(vm, scheme));
return !maybeMatch.isNull();
});
return isSchemeMatch != specialSchemeList.end();
}
JSC::JSValue URLPatternComponent::componentExec(ScriptExecutionContext& context, StringView comparedString) const
{
Ref vm = context.vm();
JSC::JSLockHolder lock(vm);
auto contextObject = context.globalObject();
if (!contextObject)
return JSC::JSValue::JSFalse;
auto regex = JSC::RegExpObject::create(vm, contextObject->regExpStructure(), m_regularExpression.get(), true);
return regex->exec(contextObject, JSC::jsString(vm, comparedString));
}
// https://urlpattern.spec.whatwg.org/#create-a-component-match-result
URLPatternComponentResult URLPatternComponent::createComponentMatchResult(JSC::JSGlobalObject* globalObject, String&& input, const JSC::JSValue& execResult) const
{
URLPatternComponentResult::GroupsRecord groups;
Ref vm = globalObject->vm();
auto length = execResult.get(globalObject, vm->propertyNames->length).toIntegerOrInfinity(globalObject);
ASSERT(length >= 0 && std::isfinite(length));
for (unsigned index = 1; index < length; ++index) {
auto match = execResult.get(globalObject, index);
std::variant<std::monostate, String> value;
if (!match.isNull() && !match.isUndefined())
value = match.toWTFString(globalObject);
groups.append(URLPatternComponentResult::NameMatchPair { m_groupNameList[index - 1], WTFMove(value) });
}
return URLPatternComponentResult { !input.isEmpty() ? WTFMove(input) : emptyString(), WTFMove(groups) };
}
}
}
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