The Tor Browser: js/xpconnect/src/XPCInlines.h@129ffea94266 (annotated)

js/xpconnect/src/XPCInlines.h@129ffea94266 (annotated)

js/xpconnect/src/XPCInlines.h

Sat, 03 Jan 2015 20:18:00 +0100

author: Michael Schloh von Bennewitz <michael@schloh.com>
date: Sat, 03 Jan 2015 20:18:00 +0100
branch: TOR_BUG_3246
changeset 7: 129ffea94266
permissions: -rw-r--r--

Conditionally enable double key logic according to:
private browsing mode or privacy.thirdparty.isolate preference and
implement in GetCookieStringCommon and FindCookie where it counts...
With some reservations of how to convince FindCookie users to test
condition and pass a nullptr when disabling double key logic.

 /* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
 /* vim: set ts=8 sts=4 et sw=4 tw=99: */
 /* 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/. */
 /* private inline methods (#include'd by xpcprivate.h). */
 #ifndef xpcinlines_h___
 #define xpcinlines_h___
 #include <algorithm>
 /***************************************************************************/
 inline void
 XPCJSRuntime::AddVariantRoot(XPCTraceableVariant* variant)
 {
     variant->AddToRootSet(&mVariantRoots);
 }
 inline void
 XPCJSRuntime::AddWrappedJSRoot(nsXPCWrappedJS* wrappedJS)
 {
     wrappedJS->AddToRootSet(&mWrappedJSRoots);
 }
 inline void
 XPCJSRuntime::AddObjectHolderRoot(XPCJSObjectHolder* holder)
 {
     holder->AddToRootSet(&mObjectHolderRoots);
 }
 /***************************************************************************/
 inline bool
 XPCCallContext::IsValid() const
 {
     return mState != INIT_FAILED;
 }
 inline XPCJSRuntime*
 XPCCallContext::GetRuntime() const
 {
     CHECK_STATE(HAVE_CONTEXT);
     return mXPCContext->GetRuntime();
 }
 inline XPCContext*
 XPCCallContext::GetXPCContext() const
 {
     CHECK_STATE(HAVE_CONTEXT);
     return mXPCContext;
 }
 inline JSContext*
 XPCCallContext::GetJSContext() const
 {
     CHECK_STATE(HAVE_CONTEXT);
     return mJSContext;
 }
 inline XPCContext::LangType
 XPCCallContext::GetCallerLanguage() const
 {
     CHECK_STATE(HAVE_CONTEXT);
     return mCallerLanguage;
 }
 inline XPCContext::LangType
 XPCCallContext::GetPrevCallerLanguage() const
 {
     CHECK_STATE(HAVE_CONTEXT);
     return mPrevCallerLanguage;
 }
 inline XPCCallContext*
 XPCCallContext::GetPrevCallContext() const
 {
     CHECK_STATE(HAVE_CONTEXT);
     return mPrevCallContext;
 }
 inline JSObject*
 XPCCallContext::GetFlattenedJSObject() const
 {
     CHECK_STATE(HAVE_OBJECT);
     return mFlattenedJSObject;
 }
 inline nsISupports*
 XPCCallContext::GetIdentityObject() const
 {
     CHECK_STATE(HAVE_OBJECT);
     if (mWrapper)
         return mWrapper->GetIdentityObject();
     return mFlattenedJSObject ?
            static_cast<nsISupports*>(xpc_GetJSPrivate(mFlattenedJSObject)) :
            nullptr;
 }
 inline XPCWrappedNative*
 XPCCallContext::GetWrapper() const
 {
     if (mState == INIT_FAILED)
         return nullptr;
     CHECK_STATE(HAVE_OBJECT);
     return mWrapper;
 }
 inline XPCWrappedNativeProto*
 XPCCallContext::GetProto() const
 {
     CHECK_STATE(HAVE_OBJECT);
     return mWrapper ? mWrapper->GetProto() : nullptr;
 }
 inline bool
 XPCCallContext::CanGetTearOff() const
 {
     return mState >= HAVE_OBJECT;
 }
 inline XPCWrappedNativeTearOff*
 XPCCallContext::GetTearOff() const
 {
     CHECK_STATE(HAVE_OBJECT);
     return mTearOff;
 }
 inline XPCNativeScriptableInfo*
 XPCCallContext::GetScriptableInfo() const
 {
     CHECK_STATE(HAVE_OBJECT);
     return mScriptableInfo;
 }
 inline bool
 XPCCallContext::CanGetSet() const
 {
     return mState >= HAVE_NAME;
 }
 inline XPCNativeSet*
 XPCCallContext::GetSet() const
 {
     CHECK_STATE(HAVE_NAME);
     return mSet;
 }
 inline bool
 XPCCallContext::CanGetInterface() const
 {
     return mState >= HAVE_NAME;
 }
 inline XPCNativeInterface*
 XPCCallContext::GetInterface() const
 {
     CHECK_STATE(HAVE_NAME);
     return mInterface;
 }
 inline XPCNativeMember*
 XPCCallContext::GetMember() const
 {
     CHECK_STATE(HAVE_NAME);
     return mMember;
 }
 inline bool
 XPCCallContext::HasInterfaceAndMember() const
 {
     return mState >= HAVE_NAME && mInterface && mMember;
 }
 inline jsid
 XPCCallContext::GetName() const
 {
     CHECK_STATE(HAVE_NAME);
     return mName;
 }
 inline bool
 XPCCallContext::GetStaticMemberIsLocal() const
 {
     CHECK_STATE(HAVE_NAME);
     return mStaticMemberIsLocal;
 }
 inline unsigned
 XPCCallContext::GetArgc() const
 {
     CHECK_STATE(READY_TO_CALL);
     return mArgc;
 }
 inline jsval*
 XPCCallContext::GetArgv() const
 {
     CHECK_STATE(READY_TO_CALL);
     return mArgv;
 }
 inline jsval*
 XPCCallContext::GetRetVal() const
 {
     CHECK_STATE(READY_TO_CALL);
     return mRetVal;
 }
 inline void
 XPCCallContext::SetRetVal(jsval val)
 {
     CHECK_STATE(HAVE_ARGS);
     if (mRetVal)
         *mRetVal = val;
 }
 inline jsid
 XPCCallContext::GetResolveName() const
 {
     CHECK_STATE(HAVE_CONTEXT);
     return XPCJSRuntime::Get()->GetResolveName();
 }
 inline jsid
 XPCCallContext::SetResolveName(JS::HandleId name)
 {
     CHECK_STATE(HAVE_CONTEXT);
     return XPCJSRuntime::Get()->SetResolveName(name);
 }
 inline XPCWrappedNative*
 XPCCallContext::GetResolvingWrapper() const
 {
     CHECK_STATE(HAVE_OBJECT);
     return XPCJSRuntime::Get()->GetResolvingWrapper();
 }
 inline XPCWrappedNative*
 XPCCallContext::SetResolvingWrapper(XPCWrappedNative* w)
 {
     CHECK_STATE(HAVE_OBJECT);
     return XPCJSRuntime::Get()->SetResolvingWrapper(w);
 }
 inline uint16_t
 XPCCallContext::GetMethodIndex() const
 {
     CHECK_STATE(HAVE_OBJECT);
     return mMethodIndex;
 }
 inline void
 XPCCallContext::SetMethodIndex(uint16_t index)
 {
     CHECK_STATE(HAVE_OBJECT);
     mMethodIndex = index;
 }
 /***************************************************************************/
 inline const nsIID*
 XPCNativeInterface::GetIID() const
 {
     const nsIID* iid;
     return NS_SUCCEEDED(mInfo->GetIIDShared(&iid)) ? iid : nullptr;
 }
 inline const char*
 XPCNativeInterface::GetNameString() const
 {
     const char* name;
     return NS_SUCCEEDED(mInfo->GetNameShared(&name)) ? name : nullptr;
 }
 inline XPCNativeMember*
 XPCNativeInterface::FindMember(jsid name) const
 {
     const XPCNativeMember* member = mMembers;
     for (int i = (int) mMemberCount; i > 0; i--, member++)
         if (member->GetName() == name)
             return const_cast<XPCNativeMember*>(member);
     return nullptr;
 }
 inline bool
 XPCNativeInterface::HasAncestor(const nsIID* iid) const
 {
     bool found = false;
     mInfo->HasAncestor(iid, &found);
     return found;
 }
 /***************************************************************************/
 inline bool
 XPCNativeSet::FindMember(jsid name, XPCNativeMember** pMember,
                          uint16_t* pInterfaceIndex) const
 {
     XPCNativeInterface* const * iface;
     int count = (int) mInterfaceCount;
     int i;
     // look for interface names first
     for (i = 0, iface = mInterfaces; i < count; i++, iface++) {
         if (name == (*iface)->GetName()) {
             if (pMember)
                 *pMember = nullptr;
             if (pInterfaceIndex)
                 *pInterfaceIndex = (uint16_t) i;
             return true;
         }
     }
     // look for method names
     for (i = 0, iface = mInterfaces; i < count; i++, iface++) {
         XPCNativeMember* member = (*iface)->FindMember(name);
         if (member) {
             if (pMember)
                 *pMember = member;
             if (pInterfaceIndex)
                 *pInterfaceIndex = (uint16_t) i;
             return true;
         }
     }
     return false;
 }
 inline bool
 XPCNativeSet::FindMember(jsid name, XPCNativeMember** pMember,
                          XPCNativeInterface** pInterface) const
 {
     uint16_t index;
     if (!FindMember(name, pMember, &index))
         return false;
     *pInterface = mInterfaces[index];
     return true;
 }
 inline bool
 XPCNativeSet::FindMember(jsid name,
                          XPCNativeMember** pMember,
                          XPCNativeInterface** pInterface,
                          XPCNativeSet* protoSet,
                          bool* pIsLocal) const
 {
     XPCNativeMember* Member;
     XPCNativeInterface* Interface;
     XPCNativeMember* protoMember;
     if (!FindMember(name, &Member, &Interface))
         return false;
     *pMember = Member;
     *pInterface = Interface;
     *pIsLocal =
         !Member ||
         !protoSet ||
         (protoSet != this &&
          !protoSet->MatchesSetUpToInterface(this, Interface) &&
          (!protoSet->FindMember(name, &protoMember, (uint16_t*)nullptr) ||
           protoMember != Member));
     return true;
 }
 inline XPCNativeInterface*
 XPCNativeSet::FindNamedInterface(jsid name) const
 {
     XPCNativeInterface* const * pp = mInterfaces;
     for (int i = (int) mInterfaceCount; i > 0; i--, pp++) {
         XPCNativeInterface* iface = *pp;
         if (name == iface->GetName())
             return iface;
     }
     return nullptr;
 }
 inline XPCNativeInterface*
 XPCNativeSet::FindInterfaceWithIID(const nsIID& iid) const
 {
     XPCNativeInterface* const * pp = mInterfaces;
     for (int i = (int) mInterfaceCount; i > 0; i--, pp++) {
         XPCNativeInterface* iface = *pp;
         if (iface->GetIID()->Equals(iid))
             return iface;
     }
     return nullptr;
 }
 inline bool
 XPCNativeSet::HasInterface(XPCNativeInterface* aInterface) const
 {
     XPCNativeInterface* const * pp = mInterfaces;
     for (int i = (int) mInterfaceCount; i > 0; i--, pp++) {
         if (aInterface == *pp)
             return true;
     }
     return false;
 }
 inline bool
 XPCNativeSet::HasInterfaceWithAncestor(XPCNativeInterface* aInterface) const
 {
     return HasInterfaceWithAncestor(aInterface->GetIID());
 }
 inline bool
 XPCNativeSet::HasInterfaceWithAncestor(const nsIID* iid) const
 {
     // We can safely skip the first interface which is *always* nsISupports.
     XPCNativeInterface* const * pp = mInterfaces+1;
     for (int i = (int) mInterfaceCount; i > 1; i--, pp++)
         if ((*pp)->HasAncestor(iid))
             return true;
     // This is rare, so check last.
     if (iid == &NS_GET_IID(nsISupports))
         return true;
     return false;
 }
 inline bool
 XPCNativeSet::MatchesSetUpToInterface(const XPCNativeSet* other,
                                       XPCNativeInterface* iface) const
 {
     int count = std::min(int(mInterfaceCount), int(other->mInterfaceCount));
     XPCNativeInterface* const * pp1 = mInterfaces;
     XPCNativeInterface* const * pp2 = other->mInterfaces;
     for (int i = (int) count; i > 0; i--, pp1++, pp2++) {
         XPCNativeInterface* cur = (*pp1);
         if (cur != (*pp2))
             return false;
         if (cur == iface)
             return true;
     }
     return false;
 }
 inline void XPCNativeSet::Mark()
 {
     if (IsMarked())
         return;
     XPCNativeInterface* const * pp = mInterfaces;
     for (int i = (int) mInterfaceCount; i > 0; i--, pp++)
         (*pp)->Mark();
     MarkSelfOnly();
 }
 #ifdef DEBUG
 inline void XPCNativeSet::ASSERT_NotMarked()
 {
     MOZ_ASSERT(!IsMarked(), "bad");
     XPCNativeInterface* const * pp = mInterfaces;
     for (int i = (int) mInterfaceCount; i > 0; i--, pp++)
         MOZ_ASSERT(!(*pp)->IsMarked(), "bad");
 }
 #endif
 /***************************************************************************/
 inline
 JSObject* XPCWrappedNativeTearOff::GetJSObjectPreserveColor() const
 {
     return reinterpret_cast<JSObject *>(reinterpret_cast<uintptr_t>(mJSObject) & ~1);
 }
 inline
 JSObject* XPCWrappedNativeTearOff::GetJSObject()
 {
     JSObject *obj = GetJSObjectPreserveColor();
     if (obj) {
       JS::ExposeObjectToActiveJS(obj);
     }
     return obj;
 }
 inline
 void XPCWrappedNativeTearOff::SetJSObject(JSObject*  JSObj)
 {
     MOZ_ASSERT(!IsMarked());
     mJSObject = JSObj;
 }
 inline
 XPCWrappedNativeTearOff::~XPCWrappedNativeTearOff()
 {
     MOZ_ASSERT(!(GetInterface() || GetNative() || GetJSObjectPreserveColor()),
                "tearoff not empty in dtor");
 }
 /***************************************************************************/
 inline bool
 XPCWrappedNative::HasInterfaceNoQI(const nsIID& iid)
 {
     return nullptr != GetSet()->FindInterfaceWithIID(iid);
 }
 inline void
 XPCWrappedNative::SweepTearOffs()
 {
     XPCWrappedNativeTearOffChunk* chunk;
     for (chunk = &mFirstChunk; chunk; chunk = chunk->mNextChunk) {
         XPCWrappedNativeTearOff* to = chunk->mTearOffs;
         for (int i = XPC_WRAPPED_NATIVE_TEAROFFS_PER_CHUNK; i > 0; i--, to++) {
             bool marked = to->IsMarked();
             to->Unmark();
             if (marked)
                 continue;
             // If this tearoff does not have a live dedicated JSObject,
             // then let's recycle it.
             if (!to->GetJSObjectPreserveColor()) {
                 nsISupports* obj = to->GetNative();
                 if (obj) {
                     obj->Release();
                     to->SetNative(nullptr);
                 }
                 to->SetInterface(nullptr);
             }
         }
     }
 }
 /***************************************************************************/
 inline bool
 xpc_ForcePropertyResolve(JSContext* cx, JS::HandleObject obj, jsid idArg)
 {
     JS::RootedValue prop(cx);
     JS::RootedId id(cx, idArg);
     if (!JS_LookupPropertyById(cx, obj, id, &prop))
         return false;
     return true;
 }
 inline jsid
 GetRTIdByIndex(JSContext *cx, unsigned index)
 {
   XPCJSRuntime *rt = nsXPConnect::XPConnect()->GetRuntime();
   return rt->GetStringID(index);
 }
 inline
 bool ThrowBadParam(nsresult rv, unsigned paramNum, XPCCallContext& ccx)
 {
     XPCThrower::ThrowBadParam(rv, paramNum, ccx);
     return false;
 }
 inline
 void ThrowBadResult(nsresult result, XPCCallContext& ccx)
 {
     XPCThrower::ThrowBadResult(NS_ERROR_XPC_NATIVE_RETURNED_FAILURE,
                                result, ccx);
 }
 /***************************************************************************/
 #endif /* xpcinlines_h___ */

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js/xpconnect/src/XPCInlines.h@129ffea94266 (annotated)

js/xpconnect/src/XPCInlines.h