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ArrayCtor,
ArrayProtoPush,
ErrorCtor,
noop,
ObjectAssign,
ReflectApply,
ReflectOwnKeys,
SymbolFor,
} from '@locker/near-membrane-shared';
import type { ProxyTarget } from '@locker/near-membrane-shared';
import type {
CallableDefineProperties,
CallableDescriptorCallback,
CallableEvaluate,
CallableGetPropertyValuePointer,
CallableInstallLazyPropertyDescriptors,
CallableIsTargetLive,
CallableIsTargetRevoked,
CallableLinkPointers,
CallableSerializeTarget,
CallableSetPrototypeOf,
CallableTrackAsFastTarget,
GetSelectedTarget,
GetTransferableValue,
HooksCallback,
Pointer,
VirtualEnvironmentOptions,
} from './types';
const LOCKER_NEAR_MEMBRANE_UNDEFINED_VALUE_SYMBOL = SymbolFor('@@lockerNearMembraneUndefinedValue');
export class VirtualEnvironment {
private readonly blueCallableGetPropertyValuePointer: CallableGetPropertyValuePointer;
private readonly blueCallableLinkPointers: CallableLinkPointers;
private readonly blueGetSelectedTarget: GetSelectedTarget;
private readonly blueGetTransferableValue: GetTransferableValue;
private readonly blueGlobalThisPointer: Pointer;
private readonly redCallableDefineProperties: CallableDefineProperties;
private readonly redCallableEvaluate: CallableEvaluate;
private readonly redCallableGetPropertyValuePointer: CallableGetPropertyValuePointer;
private readonly redCallableInstallLazyPropertyDescriptors: CallableInstallLazyPropertyDescriptors;
private readonly redCallableLinkPointers: CallableLinkPointers;
private readonly redCallableSetPrototypeOf: CallableSetPrototypeOf;
private readonly redCallableTrackAsFastTarget: CallableTrackAsFastTarget;
private readonly redGlobalThisPointer: Pointer;
constructor(options: VirtualEnvironmentOptions) {
Iif (options === undefined) {
throw new ErrorCtor('Missing required VirtualEnvironment options.');
}
// prettier-ignore
const {
blueConnector,
redConnector,
distortionCallback,
instrumentation,
liveTargetCallback,
revokedProxyCallback,
signSourceCallback,
// eslint-disable-next-line prefer-object-spread
} = ObjectAssign({ __proto__: null }, options);
let blueHooks: Parameters<HooksCallback>;
const blueConnect = blueConnector(
'blue',
(...hooks: Parameters<HooksCallback>) => {
blueHooks = hooks;
},
{
distortionCallback,
instrumentation,
liveTargetCallback,
revokedProxyCallback,
}
);
const {
0: blueGlobalThisPointer,
1: blueGetSelectedTarget,
2: blueGetTransferableValue,
3: blueCallableGetPropertyValuePointer,
// 4: blueCallableEvaluate,
5: blueCallableLinkPointers,
6: blueCallablePushErrorTarget,
7: blueCallablePushTarget,
8: blueCallableApply,
9: blueCallableConstruct,
10: blueCallableDefineProperty,
11: blueCallableDeleteProperty,
12: blueCallableGet,
13: blueCallableGetOwnPropertyDescriptor,
14: blueCallableGetPrototypeOf,
15: blueCallableHas,
16: blueCallableIsExtensible,
17: blueCallableOwnKeys,
18: blueCallablePreventExtensions,
19: blueCallableSet,
20: blueCallableSetPrototypeOf,
// 21: blueCallableDebugInfo,
// 22: blueCallableDefineProperties,
23: blueCallableGetLazyPropertyDescriptorStateByTarget,
24: blueCallableGetPropertyValue,
25: blueCallableGetTargetIntegrityTraits,
26: blueCallableGetToStringTagOfTarget,
27: blueCallableInstallErrorPrepareStackTrace,
// 28: blueCallableInstallLazyPropertyDescriptors,
29: blueCallableIsTargetLive,
// 30: blueCallableIsTargetRevoked,
// 31: blueCallableSerializeTarget,
32: blueCallableSetLazyPropertyDescriptorStateByTarget,
// 33: blueTrackAsFastTarget,
34: blueCallableBatchGetPrototypeOfAndGetOwnPropertyDescriptors,
35: blueCallableBatchGetPrototypeOfWhenHasNoOwnProperty,
36: blueCallableBatchGetPrototypeOfWhenHasNoOwnPropertyDescriptor,
} = blueHooks!;
let redHooks: Parameters<HooksCallback>;
const redConnect = redConnector('red', (...hooks: Parameters<HooksCallback>) => {
redHooks = hooks;
});
const {
0: redGlobalThisPointer,
// 1: redGetSelectedTarget,
// 2: redGetTransferableValue,
3: redCallableGetPropertyValuePointer,
4: redCallableEvaluate,
5: redCallableLinkPointers,
6: redCallablePushErrorTarget,
7: redCallablePushTarget,
8: redCallableApply,
9: redCallableConstruct,
10: redCallableDefineProperty,
11: redCallableDeleteProperty,
12: redCallableGet,
13: redCallableGetOwnPropertyDescriptor,
14: redCallableGetPrototypeOf,
15: redCallableHas,
16: redCallableIsExtensible,
17: redCallableOwnKeys,
18: redCallablePreventExtensions,
19: redCallableSet,
20: redCallableSetPrototypeOf,
21: redCallableDebugInfo,
22: redCallableDefineProperties,
23: redCallableGetLazyPropertyDescriptorStateByTarget,
// 24: redCallableGetPropertyValue,
25: redCallableGetTargetIntegrityTraits,
26: redCallableGetToStringTagOfTarget,
27: redCallableInstallErrorPrepareStackTrace,
28: redCallableInstallLazyPropertyDescriptors,
// 29: redCallableIsTargetLive,
30: redCallableIsTargetRevoked,
31: redCallableSerializeTarget,
32: redCallableSetLazyPropertyDescriptorStateByTarget,
33: redCallableTrackAsFastTarget,
34: redCallableBatchGetPrototypeOfAndGetOwnPropertyDescriptors,
35: redCallableBatchGetPrototypeOfWhenHasNoOwnProperty,
36: redCallableBatchGetPrototypeOfWhenHasNoOwnPropertyDescriptor,
} = redHooks!;
blueConnect(
noop, // redGlobalThisPointer,
noop, // redGetSelectedTarget,
noop as GetTransferableValue, // redGetTransferableValue,
noop as unknown as CallableGetPropertyValuePointer, // redCallableGetPropertyValuePointer,
noop as CallableEvaluate, // redCallableEvaluate,
noop, // redCallableLinkPointers,
redCallablePushErrorTarget,
redCallablePushTarget,
redCallableApply,
redCallableConstruct,
redCallableDefineProperty,
redCallableDeleteProperty,
redCallableGet,
redCallableGetOwnPropertyDescriptor,
redCallableGetPrototypeOf,
redCallableHas,
redCallableIsExtensible,
redCallableOwnKeys,
redCallablePreventExtensions,
redCallableSet,
redCallableSetPrototypeOf,
redCallableDebugInfo,
noop, // redCallableDefineProperties,
redCallableGetLazyPropertyDescriptorStateByTarget,
noop, // redCallableGetPropertyValue,
redCallableGetTargetIntegrityTraits,
redCallableGetToStringTagOfTarget,
redCallableInstallErrorPrepareStackTrace,
noop, // redCallableInstallLazyPropertyDescriptors,
noop as unknown as CallableIsTargetLive, // redCallableIsTargetLive,
redCallableIsTargetRevoked,
redCallableSerializeTarget,
redCallableSetLazyPropertyDescriptorStateByTarget,
redCallableTrackAsFastTarget,
redCallableBatchGetPrototypeOfAndGetOwnPropertyDescriptors,
redCallableBatchGetPrototypeOfWhenHasNoOwnProperty,
redCallableBatchGetPrototypeOfWhenHasNoOwnPropertyDescriptor
);
redConnect(
noop, // blueGlobalThisPointer,
noop, // blueGetSelectedTarget,
noop as GetTransferableValue, // blueGetTransferableValue,
noop as unknown as CallableGetPropertyValuePointer, // blueCallableGetPropertyValuePointer,
noop as CallableEvaluate, // blueCallableEvaluate,
noop, // blueCallableLinkPointers,
blueCallablePushErrorTarget,
blueCallablePushTarget,
blueCallableApply,
blueCallableConstruct,
blueCallableDefineProperty,
blueCallableDeleteProperty,
blueCallableGet,
blueCallableGetOwnPropertyDescriptor,
blueCallableGetPrototypeOf,
blueCallableHas,
blueCallableIsExtensible,
blueCallableOwnKeys,
blueCallablePreventExtensions,
blueCallableSet,
blueCallableSetPrototypeOf,
noop, // blueCallableDebugInfo
noop, // blueCallableDefineProperties,
blueCallableGetLazyPropertyDescriptorStateByTarget,
blueCallableGetPropertyValue,
blueCallableGetTargetIntegrityTraits,
blueCallableGetToStringTagOfTarget,
blueCallableInstallErrorPrepareStackTrace,
noop, // blueCallableInstallLazyPropertyDescriptors,
blueCallableIsTargetLive,
noop as unknown as CallableIsTargetRevoked, // blueCallableIsTargetRevoked,
noop as CallableSerializeTarget, // blueCallableSerializeTarget,,
blueCallableSetLazyPropertyDescriptorStateByTarget,
noop, // blueCallableTrackAsFastTarget,
blueCallableBatchGetPrototypeOfAndGetOwnPropertyDescriptors,
blueCallableBatchGetPrototypeOfWhenHasNoOwnProperty,
blueCallableBatchGetPrototypeOfWhenHasNoOwnPropertyDescriptor
);
this.blueGlobalThisPointer = blueGlobalThisPointer;
this.blueGetSelectedTarget = blueGetSelectedTarget;
this.blueGetTransferableValue = blueGetTransferableValue;
this.blueCallableGetPropertyValuePointer = blueCallableGetPropertyValuePointer;
this.blueCallableLinkPointers = blueCallableLinkPointers;
// Ensure the `this` context of red callable functions is `undefined`.
this.redGlobalThisPointer = () => redGlobalThisPointer();
this.redCallableGetPropertyValuePointer = (targetPointer: Pointer, key: PropertyKey) =>
redCallableGetPropertyValuePointer(targetPointer, key);
this.redCallableEvaluate = signSourceCallback
? (sourceText: string) => redCallableEvaluate(signSourceCallback(sourceText))
: (sourceText: string) => redCallableEvaluate(sourceText);
this.redCallableLinkPointers = (targetPointer: Pointer, foreignTargetPointer: Pointer) =>
redCallableLinkPointers(targetPointer, foreignTargetPointer);
this.redCallableSetPrototypeOf = (
targetPointer: Pointer,
protoPointerOrNull: Pointer | null
) => redCallableSetPrototypeOf(targetPointer, protoPointerOrNull);
this.redCallableDefineProperties = (
targetPointer: Pointer,
...descriptorTuples: [...Parameters<CallableDescriptorCallback>]
) => {
const { length } = descriptorTuples;
const args = new ArrayCtor(length + 1);
args[0] = targetPointer;
for (let i = 0; i < length; i += 1) {
args[i + 1] = descriptorTuples[i];
}
ReflectApply(redCallableDefineProperties, undefined, args);
};
this.redCallableInstallLazyPropertyDescriptors = (
targetPointer: Pointer,
...ownKeysAndUnforgeableGlobalThisKeys: PropertyKey[]
) => {
const { length } = ownKeysAndUnforgeableGlobalThisKeys;
const args = new ArrayCtor(length + 1);
args[0] = targetPointer;
for (let i = 0; i < length; i += 1) {
args[i + 1] = ownKeysAndUnforgeableGlobalThisKeys[i];
}
ReflectApply(redCallableInstallLazyPropertyDescriptors, undefined, args);
};
this.redCallableTrackAsFastTarget = (targetPointer: Pointer) =>
redCallableTrackAsFastTarget(targetPointer);
}
evaluate(sourceText: string): any {
try {
const bluePointerOrPrimitiveValue = this.redCallableEvaluate(sourceText);
Iif (typeof bluePointerOrPrimitiveValue === 'function') {
bluePointerOrPrimitiveValue();
return this.blueGetSelectedTarget();
}
return bluePointerOrPrimitiveValue;
} catch (error: any) {
throw this.blueGetSelectedTarget() ?? error;
}
}
lazyRemapProperties(
target: ProxyTarget,
ownKeys: PropertyKey[],
unforgeableGlobalThisKeys?: PropertyKey[]
) {
Eif ((typeof target === 'object' && target !== null) || typeof target === 'function') {
const args: Parameters<CallableInstallLazyPropertyDescriptors> = [
this.blueGetTransferableValue(target) as Pointer,
];
ReflectApply(ArrayProtoPush, args, ownKeys);
Iif (unforgeableGlobalThisKeys?.length) {
// Use `LOCKER_NEAR_MEMBRANE_UNDEFINED_VALUE_SYMBOL` to delimit
// `ownKeys` and `unforgeableGlobalThisKeys`.
args[args.length] = LOCKER_NEAR_MEMBRANE_UNDEFINED_VALUE_SYMBOL;
ReflectApply(ArrayProtoPush, args, unforgeableGlobalThisKeys);
}
ReflectApply(this.redCallableInstallLazyPropertyDescriptors, undefined, args);
}
}
link(...keys: PropertyKey[]) {
let bluePointer = this.blueGlobalThisPointer;
let redPointer = this.redGlobalThisPointer;
for (let i = 0, { length } = keys; i < length; i += 1) {
const key = keys[i];
bluePointer = this.blueCallableGetPropertyValuePointer(bluePointer, key);
redPointer = this.redCallableGetPropertyValuePointer(redPointer, key);
this.redCallableLinkPointers(redPointer, bluePointer);
this.blueCallableLinkPointers(bluePointer, redPointer);
}
}
remapProperties(target: ProxyTarget, unsafeBlueDescs: PropertyDescriptorMap) {
Eif ((typeof target === 'object' && target !== null) || typeof target === 'function') {
const targetPointer = this.blueGetTransferableValue(target) as Pointer;
const ownKeys = ReflectOwnKeys(unsafeBlueDescs);
const { length } = ownKeys;
const args = new ArrayCtor(1 + length * 7) as Parameters<CallableDefineProperties>;
args[0] = targetPointer;
for (let i = 0, j = 1; i < length; i += 1, j += 7) {
const ownKey = ownKeys[i];
const unsafeBlueDesc = (unsafeBlueDescs as any)[ownKey];
// Avoid poisoning by only installing own properties from unsafeBlueDescs.
// We don't use a toSafeDescriptor() style helper since that mutates
// the unsafeBlueDesc.
// eslint-disable-next-line prefer-object-spread
const safeBlueDesc = ObjectAssign({ __proto__: null }, unsafeBlueDesc);
args[j] = ownKey;
args[j + 1] =
'configurable' in safeBlueDesc
? !!safeBlueDesc.configurable
: LOCKER_NEAR_MEMBRANE_UNDEFINED_VALUE_SYMBOL;
args[j + 2] =
'enumerable' in safeBlueDesc
? !!safeBlueDesc.enumerable
: LOCKER_NEAR_MEMBRANE_UNDEFINED_VALUE_SYMBOL;
args[j + 3] =
'writable' in safeBlueDesc
? !!safeBlueDesc.writable
: LOCKER_NEAR_MEMBRANE_UNDEFINED_VALUE_SYMBOL;
args[j + 4] =
'value' in safeBlueDesc
? this.blueGetTransferableValue(safeBlueDesc.value)
: LOCKER_NEAR_MEMBRANE_UNDEFINED_VALUE_SYMBOL;
args[j + 5] =
'get' in safeBlueDesc
? (this.blueGetTransferableValue(safeBlueDesc.get) as Pointer)
: LOCKER_NEAR_MEMBRANE_UNDEFINED_VALUE_SYMBOL;
args[j + 6] =
'set' in safeBlueDesc
? (this.blueGetTransferableValue(safeBlueDesc.set) as Pointer)
: LOCKER_NEAR_MEMBRANE_UNDEFINED_VALUE_SYMBOL;
}
ReflectApply(this.redCallableDefineProperties, this, args);
}
}
remapProto(target: ProxyTarget, proto: object | null) {
if ((typeof target === 'object' && target !== null) || typeof target === 'function') {
const foreignTargetPointer = this.blueGetTransferableValue(target) as Pointer;
const transferableProto = proto
? (this.blueGetTransferableValue(proto) as Pointer)
: proto;
this.redCallableSetPrototypeOf(foreignTargetPointer, transferableProto);
}
}
trackAsFastTarget(target: ProxyTarget) {
if ((typeof target === 'object' && target !== null) || typeof target === 'function') {
this.redCallableTrackAsFastTarget(this.blueGetTransferableValue(target) as Pointer);
}
}
}
|