#include "config.h"
#include "JSDOMBinding.h"
#include "BindingSecurity.h"
#include "CachedScript.h"
#include "DOMObjectHashTableMap.h"
#include "DOMStringList.h"
#include "ExceptionCode.h"
#include "ExceptionHeaders.h"
#include "ExceptionInterfaces.h"
#include "Frame.h"
#include "JSDOMWindowCustom.h"
#include "JSExceptionBase.h"
#include "ScriptCallStack.h"
#include "ScriptCallStackFactory.h"
#include <interpreter/Interpreter.h>
#include <runtime/DateInstance.h>
#include <runtime/Error.h>
#include <runtime/ExceptionHelpers.h>
#include <runtime/JSFunction.h>
#include <wtf/MathExtras.h>
using namespace JSC;
namespace WebCore {
ASSERT_HAS_TRIVIAL_DESTRUCTOR(DOMConstructorObject);
ASSERT_HAS_TRIVIAL_DESTRUCTOR(DOMConstructorWithDocument);
const JSC::HashTable* getHashTableForGlobalData(VM& vm, const JSC::HashTable* staticTable)
{
return DOMObjectHashTableMap::mapFor(vm).get(staticTable);
}
JSValue jsStringOrNull(ExecState* exec, const String& s)
{
if (s.isNull())
return jsNull();
return jsStringWithCache(exec, s);
}
JSValue jsOwnedStringOrNull(ExecState* exec, const String& s)
{
if (s.isNull())
return jsNull();
return jsOwnedString(exec, s);
}
JSValue jsStringOrUndefined(ExecState* exec, const String& s)
{
if (s.isNull())
return jsUndefined();
return jsStringWithCache(exec, s);
}
JSValue jsString(ExecState* exec, const KURL& url)
{
return jsStringWithCache(exec, url.string());
}
JSValue jsStringOrNull(ExecState* exec, const KURL& url)
{
if (url.isNull())
return jsNull();
return jsStringWithCache(exec, url.string());
}
JSValue jsStringOrUndefined(ExecState* exec, const KURL& url)
{
if (url.isNull())
return jsUndefined();
return jsStringWithCache(exec, url.string());
}
AtomicStringImpl* findAtomicString(PropertyName propertyName)
{
StringImpl* impl = propertyName.publicName();
if (!impl)
return 0;
ASSERT(impl->existingHash());
return AtomicString::find(impl);
}
String valueToStringWithNullCheck(ExecState* exec, JSValue value)
{
if (value.isNull())
return String();
return value.toString(exec)->value(exec);
}
String valueToStringWithUndefinedOrNullCheck(ExecState* exec, JSValue value)
{
if (value.isUndefinedOrNull())
return String();
return value.toString(exec)->value(exec);
}
JSValue jsDateOrNull(ExecState* exec, double value)
{
if (!std::isfinite(value))
return jsNull();
return DateInstance::create(exec, exec->lexicalGlobalObject()->dateStructure(), value);
}
double valueToDate(ExecState* exec, JSValue value)
{
if (value.isNumber())
return value.asNumber();
if (!value.inherits(&DateInstance::s_info))
return std::numeric_limits<double>::quiet_NaN();
return static_cast<DateInstance*>(value.toObject(exec))->internalNumber();
}
JSC::JSValue jsArray(JSC::ExecState* exec, JSDOMGlobalObject* globalObject, PassRefPtr<DOMStringList> stringList)
{
JSC::MarkedArgumentBuffer list;
if (stringList) {
for (unsigned i = 0; i < stringList->length(); ++i)
list.append(jsStringWithCache(exec, stringList->item(i)));
}
return JSC::constructArray(exec, 0, globalObject, list);
}
void reportException(ExecState* exec, JSValue exception, CachedScript* cachedScript)
{
if (isTerminatedExecutionException(exception))
return;
Interpreter::ErrorHandlingMode mode(exec);
RefPtr<ScriptCallStack> callStack(createScriptCallStackFromException(exec, exception, ScriptCallStack::maxCallStackSizeToCapture));
exec->clearException();
exec->clearSupplementaryExceptionInfo();
JSDOMGlobalObject* globalObject = jsCast<JSDOMGlobalObject*>(exec->lexicalGlobalObject());
if (JSDOMWindow* window = jsDynamicCast<JSDOMWindow*>(globalObject)) {
if (!window->impl()->isCurrentlyDisplayedInFrame())
return;
}
int lineNumber = 0;
int columnNumber = 0;
String exceptionSourceURL;
if (callStack->size()) {
const ScriptCallFrame& frame = callStack->at(0);
lineNumber = frame.lineNumber();
columnNumber = frame.columnNumber();
exceptionSourceURL = frame.sourceURL();
} else {
JSObject* exceptionObject = exception.toObject(exec);
JSValue lineValue = exceptionObject->getDirect(exec->vm(), Identifier(exec, "line"));
lineNumber = lineValue && lineValue.isNumber() ? int(lineValue.toNumber(exec)) : 0;
JSValue sourceURLValue = exceptionObject->getDirect(exec->vm(), Identifier(exec, "sourceURL"));
exceptionSourceURL = sourceURLValue && sourceURLValue.isString() ? sourceURLValue.toString(exec)->value(exec) : ASCIILiteral("undefined");
}
String errorMessage;
if (ExceptionBase* exceptionBase = toExceptionBase(exception))
errorMessage = exceptionBase->message() + ": " + exceptionBase->description();
else {
errorMessage = exception.toString(exec)->value(exec);
exec->clearException();
exec->clearSupplementaryExceptionInfo();
}
ScriptExecutionContext* scriptExecutionContext = globalObject->scriptExecutionContext();
scriptExecutionContext->reportException(errorMessage, lineNumber, columnNumber, exceptionSourceURL, callStack->size() ? callStack : 0, cachedScript);
}
void reportCurrentException(ExecState* exec)
{
JSValue exception = exec->exception();
exec->clearException();
reportException(exec, exception);
}
#define TRY_TO_CREATE_EXCEPTION(interfaceName) \
case interfaceName##Type: \
errorObject = toJS(exec, globalObject, interfaceName::create(description)); \
break;
void setDOMException(ExecState* exec, ExceptionCode ec)
{
if (!ec || exec->hadException())
return;
if (ec == TypeError) {
throwTypeError(exec);
return;
}
JSDOMGlobalObject* globalObject = deprecatedGlobalObjectForPrototype(exec);
ExceptionCodeDescription description(ec);
JSValue errorObject;
switch (description.type) {
DOM_EXCEPTION_INTERFACES_FOR_EACH(TRY_TO_CREATE_EXCEPTION)
}
ASSERT(errorObject);
throwError(exec, errorObject);
}
#undef TRY_TO_CREATE_EXCEPTION
bool shouldAllowAccessToNode(ExecState* exec, Node* node)
{
return BindingSecurity::shouldAllowAccessToNode(exec, node);
}
bool shouldAllowAccessToFrame(ExecState* exec, Frame* target)
{
return BindingSecurity::shouldAllowAccessToFrame(exec, target);
}
bool shouldAllowAccessToFrame(ExecState* exec, Frame* frame, String& message)
{
if (!frame)
return false;
if (BindingSecurity::shouldAllowAccessToFrame(exec, frame, DoNotReportSecurityError))
return true;
message = frame->document()->domWindow()->crossDomainAccessErrorMessage(activeDOMWindow(exec));
return false;
}
bool shouldAllowAccessToDOMWindow(ExecState* exec, DOMWindow* target, String& message)
{
if (!target)
return false;
if (BindingSecurity::shouldAllowAccessToDOMWindow(exec, target, DoNotReportSecurityError))
return true;
message = target->crossDomainAccessErrorMessage(activeDOMWindow(exec));
return false;
}
void printErrorMessageForFrame(Frame* frame, const String& message)
{
if (!frame)
return;
frame->document()->domWindow()->printErrorMessage(message);
}
JSValue objectToStringFunctionGetter(ExecState* exec, JSValue, PropertyName propertyName)
{
return JSFunction::create(exec, exec->lexicalGlobalObject(), 0, propertyName.publicName(), objectProtoFuncToString);
}
Structure* getCachedDOMStructure(JSDOMGlobalObject* globalObject, const ClassInfo* classInfo)
{
JSDOMStructureMap& structures = globalObject->structures();
return structures.get(classInfo).get();
}
Structure* cacheDOMStructure(JSDOMGlobalObject* globalObject, Structure* structure, const ClassInfo* classInfo)
{
JSDOMStructureMap& structures = globalObject->structures();
ASSERT(!structures.contains(classInfo));
return structures.set(classInfo, WriteBarrier<Structure>(globalObject->vm(), globalObject, structure)).iterator->value.get();
}
static const int8_t kMaxInt8 = 127;
static const int8_t kMinInt8 = -128;
static const uint8_t kMaxUInt8 = 255;
static const int32_t kMaxInt32 = 0x7fffffff;
static const int32_t kMinInt32 = -kMaxInt32 - 1;
static const uint32_t kMaxUInt32 = 0xffffffffU;
static const int64_t kJSMaxInteger = 0x20000000000000LL - 1;
static double enforceRange(ExecState* exec, double x, double minimum, double maximum)
{
if (std::isnan(x) || std::isinf(x)) {
throwTypeError(exec);
return 0;
}
x = trunc(x);
if (x < minimum || x > maximum) {
throwTypeError(exec);
return 0;
}
return x;
}
int8_t toInt8(ExecState* exec, JSValue value, IntegerConversionConfiguration configuration)
{
if (value.isInt32()) {
int32_t d = value.asInt32();
if (d >= kMinInt8 && d <= kMaxInt8)
return static_cast<int8_t>(d);
if (configuration == EnforceRange) {
throwTypeError(exec);
return 0;
}
d %= 256;
return static_cast<int8_t>(d > kMaxInt8 ? d - 256 : d);
}
double x = value.toNumber(exec);
if (exec->hadException())
return 0;
if (configuration == EnforceRange)
return enforceRange(exec, x, kMinInt8, kMaxInt8);
if (std::isnan(x) || std::isinf(x) || !x)
return 0;
x = x < 0 ? -floor(abs(x)) : floor(abs(x));
x = fmod(x, 256);
return static_cast<int8_t>(x > kMaxInt8 ? x - 256 : x);
}
uint8_t toUInt8(ExecState* exec, JSValue value, IntegerConversionConfiguration configuration)
{
if (value.isUInt32()) {
uint32_t d = value.asUInt32();
if (d <= kMaxUInt8)
return static_cast<uint8_t>(d);
if (configuration == EnforceRange) {
throwTypeError(exec);
return 0;
}
return static_cast<uint8_t>(d % 256); }
double x = value.toNumber(exec);
if (exec->hadException())
return 0;
if (configuration == EnforceRange)
return enforceRange(exec, x, 0, kMaxUInt8);
if (std::isnan(x) || std::isinf(x) || !x)
return 0;
x = x < 0 ? -floor(abs(x)) : floor(abs(x));
return static_cast<uint8_t>(fmod(x, 256)); }
int32_t toInt32EnforceRange(ExecState* exec, JSValue value)
{
if (value.isInt32())
return value.asInt32();
double x = value.toNumber(exec);
if (exec->hadException())
return 0;
return enforceRange(exec, x, kMinInt32, kMaxInt32);
}
uint32_t toUInt32EnforceRange(ExecState* exec, JSValue value)
{
if (value.isUInt32())
return value.asUInt32();
double x = value.toNumber(exec);
if (exec->hadException())
return 0;
return enforceRange(exec, x, 0, kMaxUInt32);
}
int64_t toInt64(ExecState* exec, JSValue value, IntegerConversionConfiguration configuration)
{
if (value.isInt32())
return value.asInt32();
double x = value.toNumber(exec);
if (exec->hadException())
return 0;
if (configuration == EnforceRange)
return enforceRange(exec, x, -kJSMaxInteger, kJSMaxInteger);
unsigned long long n;
doubleToInteger(x, n);
return n;
}
uint64_t toUInt64(ExecState* exec, JSValue value, IntegerConversionConfiguration configuration)
{
if (value.isUInt32())
return value.asUInt32();
double x = value.toNumber(exec);
if (exec->hadException())
return 0;
if (configuration == EnforceRange)
return enforceRange(exec, x, 0, kJSMaxInteger);
unsigned long long n;
doubleToInteger(x, n);
return n;
}
}