toolkit/components/ctypes/ctypes.cpp@6474c204b198 (annotated)
toolkit/components/ctypes/ctypes.cpp
Wed, 31 Dec 2014 06:09:35 +0100
- author
- Michael Schloh von Bennewitz <michael@schloh.com>
- date
- Wed, 31 Dec 2014 06:09:35 +0100
- changeset 0
- 6474c204b198
- permissions
- -rw-r--r--
Cloned upstream origin tor-browser at tor-browser-31.3.0esr-4.5-1-build1
revision ID fc1c9ff7c1b2defdbc039f12214767608f46423f for hacking purpose.
| michael@0 | 1 | /* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2; -*- */ |
| michael@0 | 2 | /* This Source Code Form is subject to the terms of the Mozilla Public |
| michael@0 | 3 | * License, v. 2.0. If a copy of the MPL was not distributed with this |
| michael@0 | 4 | * file, You can obtain one at http://mozilla.org/MPL/2.0/. */ |
| michael@0 | 5 | |
| michael@0 | 6 | #include "ctypes.h" |
| michael@0 | 7 | #include "jsapi.h" |
| michael@0 | 8 | #include "mozilla/ModuleUtils.h" |
| michael@0 | 9 | #include "nsMemory.h" |
| michael@0 | 10 | #include "nsString.h" |
| michael@0 | 11 | #include "nsNativeCharsetUtils.h" |
| michael@0 | 12 | #include "mozilla/Preferences.h" |
| michael@0 | 13 | #include "mozJSComponentLoader.h" |
| michael@0 | 14 | #include "nsZipArchive.h" |
| michael@0 | 15 | |
| michael@0 | 16 | #define JSCTYPES_CONTRACTID \ |
| michael@0 | 17 | "@mozilla.org/jsctypes;1" |
| michael@0 | 18 | |
| michael@0 | 19 | |
| michael@0 | 20 | #define JSCTYPES_CID \ |
| michael@0 | 21 | { 0xc797702, 0x1c60, 0x4051, { 0x9d, 0xd7, 0x4d, 0x74, 0x5, 0x60, 0x56, 0x42 } } |
| michael@0 | 22 | |
| michael@0 | 23 | namespace mozilla { |
| michael@0 | 24 | namespace ctypes { |
| michael@0 | 25 | |
| michael@0 | 26 | static char* |
| michael@0 | 27 | UnicodeToNative(JSContext *cx, const jschar *source, size_t slen) |
| michael@0 | 28 | { |
| michael@0 | 29 | nsAutoCString native; |
| michael@0 | 30 | nsDependentString unicode(reinterpret_cast<const char16_t*>(source), slen); |
| michael@0 | 31 | nsresult rv = NS_CopyUnicodeToNative(unicode, native); |
| michael@0 | 32 | if (NS_FAILED(rv)) { |
| michael@0 | 33 | JS_ReportError(cx, "could not convert string to native charset"); |
| michael@0 | 34 | return nullptr; |
| michael@0 | 35 | } |
| michael@0 | 36 | |
| michael@0 | 37 | char* result = static_cast<char*>(JS_malloc(cx, native.Length() + 1)); |
| michael@0 | 38 | if (!result) |
| michael@0 | 39 | return nullptr; |
| michael@0 | 40 | |
| michael@0 | 41 | memcpy(result, native.get(), native.Length() + 1); |
| michael@0 | 42 | return result; |
| michael@0 | 43 | } |
| michael@0 | 44 | |
| michael@0 | 45 | static JSCTypesCallbacks sCallbacks = { |
| michael@0 | 46 | UnicodeToNative |
| michael@0 | 47 | }; |
| michael@0 | 48 | |
| michael@0 | 49 | NS_GENERIC_FACTORY_CONSTRUCTOR(Module) |
| michael@0 | 50 | |
| michael@0 | 51 | NS_IMPL_ISUPPORTS(Module, nsIXPCScriptable) |
| michael@0 | 52 | |
| michael@0 | 53 | Module::Module() |
| michael@0 | 54 | { |
| michael@0 | 55 | } |
| michael@0 | 56 | |
| michael@0 | 57 | Module::~Module() |
| michael@0 | 58 | { |
| michael@0 | 59 | } |
| michael@0 | 60 | |
| michael@0 | 61 | #define XPC_MAP_CLASSNAME Module |
| michael@0 | 62 | #define XPC_MAP_QUOTED_CLASSNAME "Module" |
| michael@0 | 63 | #define XPC_MAP_WANT_CALL |
| michael@0 | 64 | #define XPC_MAP_FLAGS nsIXPCScriptable::WANT_CALL |
| michael@0 | 65 | #include "xpc_map_end.h" |
| michael@0 | 66 | |
| michael@0 | 67 | static bool |
| michael@0 | 68 | SealObjectAndPrototype(JSContext* cx, JS::Handle<JSObject *> parent, const char* name) |
| michael@0 | 69 | { |
| michael@0 | 70 | JS::Rooted<JS::Value> prop(cx); |
| michael@0 | 71 | if (!JS_GetProperty(cx, parent, name, &prop)) |
| michael@0 | 72 | return false; |
| michael@0 | 73 | |
| michael@0 | 74 | if (prop.isUndefined()) { |
| michael@0 | 75 | // Pretend we sealed the object. |
| michael@0 | 76 | return true; |
| michael@0 | 77 | } |
| michael@0 | 78 | |
| michael@0 | 79 | JS::Rooted<JSObject*> obj(cx, prop.toObjectOrNull()); |
| michael@0 | 80 | if (!JS_GetProperty(cx, obj, "prototype", &prop)) |
| michael@0 | 81 | return false; |
| michael@0 | 82 | |
| michael@0 | 83 | JS::Rooted<JSObject*> prototype(cx, prop.toObjectOrNull()); |
| michael@0 | 84 | return JS_FreezeObject(cx, obj) && JS_FreezeObject(cx, prototype); |
| michael@0 | 85 | } |
| michael@0 | 86 | |
| michael@0 | 87 | static bool |
| michael@0 | 88 | InitAndSealCTypesClass(JSContext* cx, JS::Handle<JSObject*> global) |
| michael@0 | 89 | { |
| michael@0 | 90 | // Init the ctypes object. |
| michael@0 | 91 | if (!JS_InitCTypesClass(cx, global)) |
| michael@0 | 92 | return false; |
| michael@0 | 93 | |
| michael@0 | 94 | // Set callbacks for charset conversion and such. |
| michael@0 | 95 | JS::Rooted<JS::Value> ctypes(cx); |
| michael@0 | 96 | if (!JS_GetProperty(cx, global, "ctypes", &ctypes)) |
| michael@0 | 97 | return false; |
| michael@0 | 98 | |
| michael@0 | 99 | JS_SetCTypesCallbacks(JSVAL_TO_OBJECT(ctypes), &sCallbacks); |
| michael@0 | 100 | |
| michael@0 | 101 | // Seal up Object, Function, Array and Error and their prototypes. (This |
| michael@0 | 102 | // single object instance is shared amongst everyone who imports the ctypes |
| michael@0 | 103 | // module.) |
| michael@0 | 104 | if (!SealObjectAndPrototype(cx, global, "Object") || |
| michael@0 | 105 | !SealObjectAndPrototype(cx, global, "Function") || |
| michael@0 | 106 | !SealObjectAndPrototype(cx, global, "Array") || |
| michael@0 | 107 | !SealObjectAndPrototype(cx, global, "Error")) |
| michael@0 | 108 | return false; |
| michael@0 | 109 | |
| michael@0 | 110 | // Finally, seal the global object, for good measure. (But not recursively; |
| michael@0 | 111 | // this breaks things.) |
| michael@0 | 112 | return JS_FreezeObject(cx, global); |
| michael@0 | 113 | } |
| michael@0 | 114 | |
| michael@0 | 115 | NS_IMETHODIMP |
| michael@0 | 116 | Module::Call(nsIXPConnectWrappedNative* wrapper, |
| michael@0 | 117 | JSContext* cx, |
| michael@0 | 118 | JSObject* obj, |
| michael@0 | 119 | const JS::CallArgs& args, |
| michael@0 | 120 | bool* _retval) |
| michael@0 | 121 | { |
| michael@0 | 122 | mozJSComponentLoader* loader = mozJSComponentLoader::Get(); |
| michael@0 | 123 | JS::Rooted<JSObject*> targetObj(cx); |
| michael@0 | 124 | nsresult rv = loader->FindTargetObject(cx, &targetObj); |
| michael@0 | 125 | NS_ENSURE_SUCCESS(rv, rv); |
| michael@0 | 126 | |
| michael@0 | 127 | *_retval = InitAndSealCTypesClass(cx, targetObj); |
| michael@0 | 128 | return NS_OK; |
| michael@0 | 129 | } |
| michael@0 | 130 | |
| michael@0 | 131 | } |
| michael@0 | 132 | } |
| michael@0 | 133 | |
| michael@0 | 134 | NS_DEFINE_NAMED_CID(JSCTYPES_CID); |
| michael@0 | 135 | |
| michael@0 | 136 | static const mozilla::Module::CIDEntry kCTypesCIDs[] = { |
| michael@0 | 137 | { &kJSCTYPES_CID, false, nullptr, mozilla::ctypes::ModuleConstructor }, |
| michael@0 | 138 | { nullptr } |
| michael@0 | 139 | }; |
| michael@0 | 140 | |
| michael@0 | 141 | static const mozilla::Module::ContractIDEntry kCTypesContracts[] = { |
| michael@0 | 142 | { JSCTYPES_CONTRACTID, &kJSCTYPES_CID }, |
| michael@0 | 143 | { nullptr } |
| michael@0 | 144 | }; |
| michael@0 | 145 | |
| michael@0 | 146 | static const mozilla::Module kCTypesModule = { |
| michael@0 | 147 | mozilla::Module::kVersion, |
| michael@0 | 148 | kCTypesCIDs, |
| michael@0 | 149 | kCTypesContracts |
| michael@0 | 150 | }; |
| michael@0 | 151 | |
| michael@0 | 152 | NSMODULE_DEFN(jsctypes) = &kCTypesModule; |
