152 lines
3.9 KiB
C++
152 lines
3.9 KiB
C++
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2; -*- */
|
|
/* This Source Code Form is subject to the terms of the Mozilla Public
|
|
* License, v. 2.0. If a copy of the MPL was not distributed with this
|
|
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
|
|
|
|
#include "ctypes.h"
|
|
#include "jsapi.h"
|
|
#include "mozilla/ModuleUtils.h"
|
|
#include "nsMemory.h"
|
|
#include "nsString.h"
|
|
#include "nsNativeCharsetUtils.h"
|
|
#include "mozilla/Preferences.h"
|
|
#include "mozJSComponentLoader.h"
|
|
#include "nsZipArchive.h"
|
|
#include "xpc_make_class.h"
|
|
|
|
#define JSCTYPES_CONTRACTID \
|
|
"@mozilla.org/jsctypes;1"
|
|
|
|
|
|
#define JSCTYPES_CID \
|
|
{ 0xc797702, 0x1c60, 0x4051, { 0x9d, 0xd7, 0x4d, 0x74, 0x5, 0x60, 0x56, 0x42 } }
|
|
|
|
namespace mozilla {
|
|
namespace ctypes {
|
|
|
|
static char*
|
|
UnicodeToNative(JSContext *cx, const char16_t *source, size_t slen)
|
|
{
|
|
nsAutoCString native;
|
|
nsDependentString unicode(reinterpret_cast<const char16_t*>(source), slen);
|
|
nsresult rv = NS_CopyUnicodeToNative(unicode, native);
|
|
if (NS_FAILED(rv)) {
|
|
JS_ReportErrorASCII(cx, "could not convert string to native charset");
|
|
return nullptr;
|
|
}
|
|
|
|
char* result = static_cast<char*>(JS_malloc(cx, native.Length() + 1));
|
|
if (!result)
|
|
return nullptr;
|
|
|
|
memcpy(result, native.get(), native.Length() + 1);
|
|
return result;
|
|
}
|
|
|
|
static JSCTypesCallbacks sCallbacks = {
|
|
UnicodeToNative
|
|
};
|
|
|
|
NS_GENERIC_FACTORY_CONSTRUCTOR(Module)
|
|
|
|
NS_IMPL_ISUPPORTS(Module, nsIXPCScriptable)
|
|
|
|
Module::Module()
|
|
{
|
|
}
|
|
|
|
Module::~Module()
|
|
{
|
|
}
|
|
|
|
#define XPC_MAP_CLASSNAME Module
|
|
#define XPC_MAP_QUOTED_CLASSNAME "Module"
|
|
#define XPC_MAP_WANT_CALL
|
|
#define XPC_MAP_FLAGS nsIXPCScriptable::WANT_CALL
|
|
#include "xpc_map_end.h"
|
|
|
|
static bool
|
|
SealObjectAndPrototype(JSContext* cx, JS::Handle<JSObject *> parent, const char* name)
|
|
{
|
|
JS::Rooted<JS::Value> prop(cx);
|
|
if (!JS_GetProperty(cx, parent, name, &prop))
|
|
return false;
|
|
|
|
if (prop.isUndefined()) {
|
|
// Pretend we sealed the object.
|
|
return true;
|
|
}
|
|
|
|
JS::Rooted<JSObject*> obj(cx, prop.toObjectOrNull());
|
|
if (!JS_GetProperty(cx, obj, "prototype", &prop))
|
|
return false;
|
|
|
|
JS::Rooted<JSObject*> prototype(cx, prop.toObjectOrNull());
|
|
return JS_FreezeObject(cx, obj) && JS_FreezeObject(cx, prototype);
|
|
}
|
|
|
|
static bool
|
|
InitAndSealCTypesClass(JSContext* cx, JS::Handle<JSObject*> global)
|
|
{
|
|
// Init the ctypes object.
|
|
if (!JS_InitCTypesClass(cx, global))
|
|
return false;
|
|
|
|
// Set callbacks for charset conversion and such.
|
|
JS::Rooted<JS::Value> ctypes(cx);
|
|
if (!JS_GetProperty(cx, global, "ctypes", &ctypes))
|
|
return false;
|
|
|
|
JS_SetCTypesCallbacks(ctypes.toObjectOrNull(), &sCallbacks);
|
|
|
|
// Seal up Object, Function, Array and Error and their prototypes. (This
|
|
// single object instance is shared amongst everyone who imports the ctypes
|
|
// module.)
|
|
if (!SealObjectAndPrototype(cx, global, "Object") ||
|
|
!SealObjectAndPrototype(cx, global, "Function") ||
|
|
!SealObjectAndPrototype(cx, global, "Array") ||
|
|
!SealObjectAndPrototype(cx, global, "Error"))
|
|
return false;
|
|
|
|
return true;
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
Module::Call(nsIXPConnectWrappedNative* wrapper,
|
|
JSContext* cx,
|
|
JSObject* obj,
|
|
const JS::CallArgs& args,
|
|
bool* _retval)
|
|
{
|
|
mozJSComponentLoader* loader = mozJSComponentLoader::Get();
|
|
JS::Rooted<JSObject*> targetObj(cx);
|
|
nsresult rv = loader->FindTargetObject(cx, &targetObj);
|
|
NS_ENSURE_SUCCESS(rv, rv);
|
|
|
|
*_retval = InitAndSealCTypesClass(cx, targetObj);
|
|
return NS_OK;
|
|
}
|
|
|
|
} // namespace ctypes
|
|
} // namespace mozilla
|
|
|
|
NS_DEFINE_NAMED_CID(JSCTYPES_CID);
|
|
|
|
static const mozilla::Module::CIDEntry kCTypesCIDs[] = {
|
|
{ &kJSCTYPES_CID, false, nullptr, mozilla::ctypes::ModuleConstructor },
|
|
{ nullptr }
|
|
};
|
|
|
|
static const mozilla::Module::ContractIDEntry kCTypesContracts[] = {
|
|
{ JSCTYPES_CONTRACTID, &kJSCTYPES_CID },
|
|
{ nullptr }
|
|
};
|
|
|
|
static const mozilla::Module kCTypesModule = {
|
|
mozilla::Module::kVersion,
|
|
kCTypesCIDs,
|
|
kCTypesContracts
|
|
};
|
|
|
|
NSMODULE_DEFN(jsctypes) = &kCTypesModule;
|