/* Cycript - Optimizing JavaScript Compiler/Runtime
- * Copyright (C) 2009-2013 Jay Freeman (saurik)
+ * Copyright (C) 2009-2015 Jay Freeman (saurik)
*/
-/* GNU General Public License, Version 3 {{{ */
+/* GNU Affero General Public License, Version 3 {{{ */
/*
- * Cycript is free software: you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published
- * by the Free Software Foundation, either version 3 of the License,
- * or (at your option) any later version.
- *
- * Cycript is distributed in the hope that it will be useful, but
- * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with Cycript. If not, see <http://www.gnu.org/licenses/>.
+ * GNU Affero General Public License for more details.
+
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
**/
/* }}} */
#include "JavaScript.hpp"
#include "String.hpp"
-struct CYHooks *hooks_;
+static std::vector<CYHook *> &GetHooks() {
+ static std::vector<CYHook *> hooks;
+ return hooks;
+}
+
+CYRegisterHook::CYRegisterHook(CYHook *hook) {
+ GetHooks().push_back(hook);
+}
/* JavaScript Properties {{{ */
bool CYHasProperty(JSContextRef context, JSObjectRef object, JSStringRef name) {
void CYSetPrototype(JSContextRef context, JSObjectRef object, JSValueRef value) {
JSObjectSetPrototype(context, object, value);
- _assert(JSObjectGetPrototype(context, object) == value);
+ _assert(CYIsStrictEqual(context, JSObjectGetPrototype(context, object), value));
}
/* }}} */
/* JavaScript Strings {{{ */
JSStringRef toJSON_s;
JSStringRef toPointer_s;
JSStringRef toString_s;
+JSStringRef weak_s;
static JSStringRef Result_;
}
};
-typedef std::map<const char *, Type_privateData *, CYCStringLess> TypeMap;
-static TypeMap Types_;
-
JSObjectRef CYMakeStruct(JSContextRef context, void *data, sig::Type *type, ffi_type *ffi, JSObjectRef owner) {
Struct_privateData *internal(new Struct_privateData(context, owner));
CYPool &pool(*internal->pool_);
}
static void *CYCastSymbol(const char *name) {
+ for (CYHook *hook : GetHooks())
+ if (hook->CastSymbol != NULL)
+ if (void *value = (*hook->CastSymbol)(name))
+ return value;
return dlsym(RTLD_DEFAULT, name);
}
return value != NULL && JSValueIsObject(context, value) && JSObjectIsFunction(context, (JSObjectRef) value);
}
+bool CYIsEqual(JSContextRef context, JSValueRef lhs, JSValueRef rhs) {
+ return _jsccall(JSValueIsEqual, context, lhs, rhs);
+}
+
+bool CYIsStrictEqual(JSContextRef context, JSValueRef lhs, JSValueRef rhs) {
+ return JSValueIsStrictEqual(context, lhs, rhs);
+}
+
size_t CYArrayLength(JSContextRef context, JSObjectRef array) {
return CYCastDouble(context, CYGetProperty(context, array, length_s));
}
static void (*JSSynchronousGarbageCollectForDebugging$)(JSContextRef);
-void CYGarbageCollect(JSContextRef context) {
+_visible void CYGarbageCollect(JSContextRef context) {
(JSSynchronousGarbageCollectForDebugging$ ?: &JSGarbageCollect)(context);
}
JSValueRef toCYON(CYGetProperty(context, object, toCYON_s));
if (CYIsCallable(context, toCYON)) {
// XXX: this needs to be abstracted behind some kind of function
- JSValueRef arguments[1] = {CYCastJSValue(context, static_cast<double>(reinterpret_cast<uintptr_t>(&objects)))};
+ JSValueRef arguments[1] = {CYCastJSValue(context, reinterpret_cast<uintptr_t>(&objects))};
JSValueRef value(CYCallAsFunction(context, (JSObjectRef) toCYON, object, 1, arguments));
_assert(value != NULL);
return CYPoolCString(pool, context, value);
}
void *CYCastPointer_(JSContextRef context, JSValueRef value) {
- switch (JSValueGetType(context, value)) {
+ if (value == NULL)
+ return NULL;
+ else switch (JSValueGetType(context, value)) {
case kJSTypeNull:
return NULL;
case kJSTypeObject: {
break;
default:
- if (hooks_ != NULL && hooks_->PoolFFI != NULL)
- if ((*hooks_->PoolFFI)(pool, context, type, ffi, data, value))
- return;
+ for (CYHook *hook : GetHooks())
+ if (hook->PoolFFI != NULL)
+ if ((*hook->PoolFFI)(pool, context, type, ffi, data, value))
+ return;
CYThrow("unimplemented signature code: '%c''\n", type->primitive);
}
null:
return CYJSNull(context);
default:
- if (hooks_ != NULL && hooks_->FromFFI != NULL)
- if (JSValueRef value = (*hooks_->FromFFI)(context, type, ffi, data, initialize, owner))
- return value;
+ for (CYHook *hook : GetHooks())
+ if (hook->FromFFI != NULL)
+ if (JSValueRef value = (*hook->FromFFI)(context, type, ffi, data, initialize, owner))
+ return value;
CYThrow("unimplemented signature code: '%c''\n", type->primitive);
}
}
-void CYExecuteClosure(ffi_cif *cif, void *result, void **arguments, void *arg, JSValueRef (*adapter)(JSContextRef, size_t, JSValueRef[], JSObjectRef)) {
+void CYExecuteClosure(ffi_cif *cif, void *result, void **arguments, void *arg) {
Closure_privateData *internal(reinterpret_cast<Closure_privateData *>(arg));
JSContextRef context(internal->context_);
for (size_t index(0); index != count; ++index)
values[index] = CYFromFFI(context, internal->signature_.elements[1 + index].type, internal->cif_.arg_types[index], arguments[index]);
- JSValueRef value(adapter(context, count, values, internal->function_));
+ JSValueRef value(internal->adapter_(context, count, values, internal->function_));
CYPoolFFI(NULL, context, internal->signature_.elements[0].type, internal->cif_.rtype, result, value);
}
return CYCallAsFunction(context, function, NULL, count, values);
}
-static void FunctionClosure_(ffi_cif *cif, void *result, void **arguments, void *arg) {
- CYExecuteClosure(cif, result, arguments, arg, &FunctionAdapter_);
-}
-
-Closure_privateData *CYMakeFunctor_(JSContextRef context, JSObjectRef function, const sig::Signature &signature, void (*callback)(ffi_cif *, void *, void **, void *)) {
+Closure_privateData *CYMakeFunctor_(JSContextRef context, JSObjectRef function, const sig::Signature &signature, JSValueRef (*adapter)(JSContextRef, size_t, JSValueRef[], JSObjectRef)) {
// XXX: in case of exceptions this will leak
// XXX: in point of fact, this may /need/ to leak :(
- Closure_privateData *internal(new Closure_privateData(context, function, signature));
+ Closure_privateData *internal(new Closure_privateData(context, function, adapter, signature));
#if defined(__APPLE__) && (defined(__arm__) || defined(__arm64__))
void *executable;
ffi_closure *writable(reinterpret_cast<ffi_closure *>(ffi_closure_alloc(sizeof(ffi_closure), &executable)));
- ffi_status status(ffi_prep_closure_loc(writable, &internal->cif_, callback, internal, executable));
+ ffi_status status(ffi_prep_closure_loc(writable, &internal->cif_, &CYExecuteClosure, internal, executable));
_assert(status == FFI_OK);
internal->value_ = executable;
-1, 0
)));
- ffi_status status(ffi_prep_closure(closure, &internal->cif_, callback, internal));
+ ffi_status status(ffi_prep_closure(closure, &internal->cif_, &CYExecuteClosure, internal));
_assert(status == FFI_OK);
_syscall(mprotect(closure, sizeof(*closure), PROT_READ | PROT_EXEC));
}
static JSObjectRef CYMakeFunctor(JSContextRef context, JSObjectRef function, const sig::Signature &signature) {
- Closure_privateData *internal(CYMakeFunctor_(context, function, signature, &FunctionClosure_));
+ Closure_privateData *internal(CYMakeFunctor_(context, function, signature, &FunctionAdapter_));
JSObjectRef object(JSObjectMake(context, Functor_, internal));
// XXX: see above notes about needing to leak
JSValueProtect(CYGetJSContext(context), object);
return object;
}
+JSValueRef CYGetCachedValue(JSContextRef context, JSStringRef name) {
+ return CYGetProperty(context, CYCastJSObject(context, CYGetProperty(context, CYGetGlobalObject(context), cy_s)), name);
+}
+
JSObjectRef CYGetCachedObject(JSContextRef context, JSStringRef name) {
- return CYCastJSObject(context, CYGetProperty(context, CYCastJSObject(context, CYGetProperty(context, CYGetGlobalObject(context), cy_s)), name));
+ return CYCastJSObject(context, CYGetCachedValue(context, name));
}
static JSObjectRef CYMakeFunctor(JSContextRef context, JSValueRef value, const sig::Signature &signature) {
}
}
+void CYCallFunction(CYPool &pool, JSContextRef context, ffi_cif *cif, void (*function)(), void *value, void **values) {
+ ffi_call(cif, function, value, values);
+}
+
JSValueRef CYCallFunction(CYPool &pool, JSContextRef context, size_t setups, void *setup[], size_t count, const JSValueRef arguments[], bool initialize, sig::Signature *signature, ffi_cif *cif, void (*function)()) {
if (setups + count != signature->count - 1)
throw CYJSError(context, "incorrect number of arguments to ffi function");
uint8_t value[cif->rtype->size];
- if (hooks_ != NULL && hooks_->CallFunction != NULL)
- (*hooks_->CallFunction)(context, cif, function, value, values);
- else
- ffi_call(cif, function, value, values);
+ void (*call)(CYPool &, JSContextRef, ffi_cif *, void (*)(), void *, void **) = &CYCallFunction;
+ // XXX: this only supports one hook, but it is a bad idea anyway
+ for (CYHook *hook : GetHooks())
+ if (hook->CallFunction != NULL)
+ call = hook->CallFunction;
+ call(pool, context, cif, function, value, values);
return CYFromFFI(context, signature->elements[0].type, cif->rtype, value, initialize);
}
static JSValueRef Type_callAsFunction_toCYON(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
Type_privateData *internal(reinterpret_cast<Type_privateData *>(JSObjectGetPrivate(_this)));
CYLocalPool pool;
- std::ostringstream out;
+ std::stringbuf out;
CYOptions options;
CYOutput output(out, options);
(new(pool) CYEncodedType(Decode(pool, internal->type_)))->Output(output, CYNoFlags);
static JSObjectRef (*JSObjectMakeArray$)(JSContextRef, size_t, const JSValueRef[], JSValueRef *);
-void CYSetArgs(int argc, const char *argv[]) {
+_visible void CYSetArgs(int argc, const char *argv[]) {
JSContextRef context(CYGetJSContext());
JSValueRef args[argc];
for (int i(0); i != argc; ++i)
return JSContextGetGlobalObject(context);
}
+// XXX: this is neither exceptin safe nor even terribly sane
class ExecutionHandle {
private:
JSContextRef context_;
- void *handle_;
+ std::vector<void *> handles_;
public:
ExecutionHandle(JSContextRef context) :
context_(context)
{
- if (hooks_ != NULL && hooks_->ExecuteStart != NULL)
- handle_ = (*hooks_->ExecuteStart)(context_);
- else
- handle_ = NULL;
+ handles_.resize(GetHooks().size());
+ for (size_t i(0); i != GetHooks().size(); ++i) {
+ CYHook *hook(GetHooks()[i]);
+ if (hook->ExecuteStart != NULL)
+ handles_[i] = (*hook->ExecuteStart)(context_);
+ else
+ handles_[i] = NULL;
+ }
}
~ExecutionHandle() {
- if (hooks_ != NULL && hooks_->ExecuteEnd != NULL)
- (*hooks_->ExecuteEnd)(context_, handle_);
+ for (size_t i(GetHooks().size()); i != 0; --i) {
+ CYHook *hook(GetHooks()[i-1]);
+ if (hook->ExecuteEnd != NULL)
+ (*hook->ExecuteEnd)(context_, handles_[i-1]);
+ }
}
};
-const char *CYExecute(JSContextRef context, CYPool &pool, CYUTF8String code) {
+static volatile bool cancel_;
+
+static bool CYShouldTerminate(JSContextRef context, void *arg) {
+ return cancel_;
+}
+
+_visible const char *CYExecute(JSContextRef context, CYPool &pool, CYUTF8String code) {
JSValueRef exception(NULL);
+ if (false) error:
+ return CYPoolCString(pool, context, CYJSString(context, exception));
ExecutionHandle handle(context);
- JSValueRef result; try {
- result = JSEvaluateScript(context, CYJSString(code), NULL, NULL, 0, &exception);
- } catch (const char *error) {
- return error;
- }
+ cancel_ = false;
+ if (&JSContextGroupSetExecutionTimeLimit != NULL)
+ JSContextGroupSetExecutionTimeLimit(JSContextGetGroup(context), 0.5, &CYShouldTerminate, NULL);
- if (exception != NULL) error:
- return CYPoolCString(pool, context, CYJSString(context, exception));
+ JSValueRef result(JSEvaluateScript(context, CYJSString(code), NULL, NULL, 0, &exception));
+ if (exception != NULL)
+ goto error;
if (JSValueIsUndefined(context, result))
return NULL;
- const char *json; try {
- std::set<void *> objects;
- json = CYPoolCCYON(pool, context, result, objects, &exception);
- } catch (const char *error) {
- return error;
- }
-
+ std::set<void *> objects;
+ const char *json(CYPoolCCYON(pool, context, result, objects, &exception));
if (exception != NULL)
goto error;
return json;
}
+_visible void CYCancel() {
+ cancel_ = true;
+}
+
static bool initialized_ = false;
void CYInitializeDynamic() {
toJSON_s = JSStringCreateWithUTF8CString("toJSON");
toPointer_s = JSStringCreateWithUTF8CString("toPointer");
toString_s = JSStringCreateWithUTF8CString("toString");
+ weak_s = JSStringCreateWithUTF8CString("weak");
Result_ = JSStringCreateWithUTF8CString("_");
- if (hooks_ != NULL && hooks_->Initialize != NULL)
- (*hooks_->Initialize)();
+ for (CYHook *hook : GetHooks())
+ if (hook->Initialize != NULL)
+ (*hook->Initialize)();
}
void CYThrow(JSContextRef context, JSValueRef value) {
return reinterpret_cast<Context *>(JSObjectGetPrivate(CYCastJSObject(context, CYGetProperty(context, CYGetGlobalObject(context), cy_s))))->context_;
}
-extern "C" bool CydgetMemoryParse(const uint16_t **data, size_t *size);
-
void *CYMapFile(const char *path, size_t *psize) {
- int fd(_syscall_(open(path, O_RDONLY), 1, {ENOENT}));
+ int fd(_syscall_(open(path, O_RDONLY), 1, ENOENT));
if (fd == -1)
return NULL;
if (code.data == NULL) {
if (strchr(name, '/') == NULL && (
+#ifdef __APPLE__
dlopen(pool.strcat("/System/Library/Frameworks/", name, ".framework/", name, NULL), RTLD_LAZY | RTLD_GLOBAL) != NULL ||
dlopen(pool.strcat("/System/Library/PrivateFrameworks/", name, ".framework/", name, NULL), RTLD_LAZY | RTLD_GLOBAL) != NULL ||
+#endif
false))
return CYJSUndefined(NULL);
return CYGetProperty(context, module, property);
} CYCatch(NULL) }
+extern "C" void CYDestroyWeak(JSWeakObjectMapRef weak, void *data) {
+}
+
extern "C" void CYSetupContext(JSGlobalContextRef context) {
CYInitializeDynamic();
//CYSetProperty(context, System, CYJSString("global"), global);
CYSetProperty(context, System, CYJSString("print"), &System_print);
+#ifdef __APPLE__
+ if (&JSWeakObjectMapCreate != NULL) {
+ JSWeakObjectMapRef weak(JSWeakObjectMapCreate(context, NULL, &CYDestroyWeak));
+ CYSetProperty(context, cy, weak_s, CYCastJSValue(context, reinterpret_cast<uintptr_t>(weak)));
+ }
+#endif
+
if (CYBridgeEntry *entry = CYBridgeHash("1dlerror", 8))
entry->cache_ = new cy::Functor(entry->value_, reinterpret_cast<void (*)()>(&dlerror));
- if (hooks_ != NULL && hooks_->SetupContext != NULL)
- (*hooks_->SetupContext)(context);
+ for (CYHook *hook : GetHooks())
+ if (hook->SetupContext != NULL)
+ (*hook->SetupContext)(context);
CYArrayPush(context, alls, cycript);
}
static JSGlobalContextRef context_;
-JSGlobalContextRef CYGetJSContext() {
+_visible JSGlobalContextRef CYGetJSContext() {
CYInitializeDynamic();
if (context_ == NULL) {
return context_;
}
-void CYDestroyContext() {
+_visible void CYDestroyContext() {
if (context_ == NULL)
return;
JSGlobalContextRelease(context_);
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