Fix a crash in IndexedDB.

dom/indexedDB/IDBCursor.cpp

@@ -430,7 +430,7 @@ IDBCursor::Continue(JSContext* aCx,
   }
 
   Key key;
-  aRv = key.SetFromJSVal(aCx, aKey);
+  aRv = key.SetFromJSVal(aCx, aKey, /* aCallGetters */ true);
   if (aRv.Failed()) {
     return;
   }
@@ -536,7 +536,7 @@ IDBCursor::ContinuePrimaryKey(JSContext* aCx,
   }
 
   Key key;
-  aRv = key.SetFromJSVal(aCx, aKey);
+  aRv = key.SetFromJSVal(aCx, aKey, /* aCallGetters */ true);
   if (aRv.Failed()) {
     return;
   }
@@ -558,7 +558,7 @@ IDBCursor::ContinuePrimaryKey(JSContext* aCx,
   }
 
   Key primaryKey;
-  aRv = primaryKey.SetFromJSVal(aCx, aPrimaryKey);
+  aRv = primaryKey.SetFromJSVal(aCx, aPrimaryKey, /* aCallGetters */ true);
   if (aRv.Failed()) {
     return;
   }
@@ -718,7 +718,7 @@ IDBCursor::Update(JSContext* aCx, JS::Handle<JS::Value> aValue,
     const KeyPath& keyPath = objectStore->GetKeyPath();
     Key key;
 
-    aRv = keyPath.ExtractKey(aCx, aValue, key);
+    aRv = keyPath.ExtractKey(aCx, aValue, key, /* aCallGetters */ false);
     if (aRv.Failed()) {
       return nullptr;
     }

dom/indexedDB/IDBFactory.cpp

@@ -482,13 +482,13 @@ IDBFactory::Cmp(JSContext* aCx, JS::Handle<JS::Value> aFirst,
                 JS::Handle<JS::Value> aSecond, ErrorResult& aRv)
 {
   Key first, second;
-  nsresult rv = first.SetFromJSVal(aCx, aFirst);
+  nsresult rv = first.SetFromJSVal(aCx, aFirst, /* aCallGetters */ true);
   if (NS_FAILED(rv)) {
     aRv.Throw(rv);
     return 0;
   }
 
-  rv = second.SetFromJSVal(aCx, aSecond);
+  rv = second.SetFromJSVal(aCx, aSecond, /* aCallGetters */ true);
   if (NS_FAILED(rv)) {
     aRv.Throw(rv);
     return 0;

dom/indexedDB/IDBKeyRange.cpp

@@ -24,7 +24,7 @@ GetKeyFromJSVal(JSContext* aCx,
                 JS::Handle<JS::Value> aVal,
                 Key& aKey)
 {
-  nsresult rv = aKey.SetFromJSVal(aCx, aVal);
+  nsresult rv = aKey.SetFromJSVal(aCx, aVal, /* aCallGetters */ true);
   if (NS_FAILED(rv)) {
     MOZ_ASSERT(NS_ERROR_GET_MODULE(rv) == NS_ERROR_MODULE_DOM_INDEXEDDB);
     return rv;

dom/indexedDB/IDBObjectStore.cpp

@@ -1084,7 +1084,7 @@ IDBObjectStore::AppendIndexUpdateInfo(
 
   if (!aMultiEntry) {
     Key key;
-    rv = aKeyPath.ExtractKey(aCx, aVal, key);
+    rv = aKeyPath.ExtractKey(aCx, aVal, key, /* aCallGetters */ false);
 
     // If an index's keyPath doesn't match an object, we ignore that object.
     if (rv == NS_ERROR_DOM_INDEXEDDB_DATA_ERR || key.IsUnset()) {
@@ -1128,13 +1128,13 @@ IDBObjectStore::AppendIndexUpdateInfo(
 
     for (uint32_t arrayIndex = 0; arrayIndex < arrayLength; arrayIndex++) {
       JS::Rooted<JS::Value> arrayItem(aCx);
-      if (NS_WARN_IF(!JS_GetElement(aCx, array, arrayIndex, &arrayItem))) {
+      if (NS_WARN_IF(!JS_GetOwnElement(aCx, array, arrayIndex, &arrayItem))) {
         IDB_REPORT_INTERNAL_ERR();
         return NS_ERROR_DOM_INDEXEDDB_UNKNOWN_ERR;
       }
 
       Key value;
-      if (NS_FAILED(value.SetFromJSVal(aCx, arrayItem)) ||
+      if (NS_FAILED(value.SetFromJSVal(aCx, arrayItem, /* aCallGetters */ false)) ||
           value.IsUnset()) {
         // Not a value we can do anything with, ignore it.
         continue;
@@ -1153,7 +1153,7 @@ IDBObjectStore::AppendIndexUpdateInfo(
   }
   else {
     Key value;
-    if (NS_FAILED(value.SetFromJSVal(aCx, val)) ||
+    if (NS_FAILED(value.SetFromJSVal(aCx, val, /* aCallGetters */ false)) ||
         value.IsUnset()) {
       // Not a value we can do anything with, ignore it.
       return NS_OK;
@@ -1324,12 +1324,12 @@ IDBObjectStore::GetAddInfo(JSContext* aCx,
 
   if (!HasValidKeyPath()) {
     // Out-of-line keys must be passed in.
-    rv = aKey.SetFromJSVal(aCx, aKeyVal);
+    rv = aKey.SetFromJSVal(aCx, aKeyVal, /* aCallGetters */ true);
     if (NS_FAILED(rv)) {
       return rv;
     }
   } else if (!isAutoIncrement) {
-    rv = GetKeyPath().ExtractKey(aCx, aValue, aKey);
+    rv = GetKeyPath().ExtractKey(aCx, aValue, aKey, /* aCallGetters */ false);
     if (NS_FAILED(rv)) {
       return rv;
     }
@@ -1368,7 +1368,8 @@ IDBObjectStore::GetAddInfo(JSContext* aCx,
                                          aValue,
                                          aKey,
                                          &GetAddInfoCallback,
-                                         &data);
+                                         &data,
+                                         /* aCallGetters */ false);
   } else {
     rv = GetAddInfoCallback(aCx, &data);
   }

dom/indexedDB/Key.cpp

@@ -201,8 +201,11 @@ Key::ToLocaleBasedKey(Key& aTarget, const nsCString& aLocale) const
 }
 
 nsresult
-Key::EncodeJSValInternal(JSContext* aCx, JS::Handle<JS::Value> aVal,
+Key::EncodeJSValInternal(JSContext* aCx,
-                         uint8_t aTypeOffset, uint16_t aRecursionDepth)
+                         JS::Handle<JS::Value> aVal,
+                         uint8_t aTypeOffset,
+                         uint16_t aRecursionDepth,
+                         bool aCallGetters)
 {
   static_assert(eMaxType * kMaxArrayCollapse < 256,
                 "Unable to encode jsvals.");
@@ -257,13 +260,18 @@ Key::EncodeJSValInternal(JSContext* aCx, JS::Handle<JS::Value> aVal,
 
       for (uint32_t index = 0; index < length; index++) {
         JS::Rooted<JS::Value> val(aCx);
-        if (!JS_GetElement(aCx, obj, index, &val)) {
+        bool ok = aCallGetters ? JS_GetElement(aCx, obj, index, &val)
+                               : JS_GetOwnElement(aCx, obj, index, &val);
+        if (!ok) {
           IDB_REPORT_INTERNAL_ERR();
           return NS_ERROR_DOM_INDEXEDDB_UNKNOWN_ERR;
         }
 
-        nsresult rv = EncodeJSValInternal(aCx, val, aTypeOffset,
+        nsresult rv = EncodeJSValInternal(aCx,
-                                          aRecursionDepth + 1);
+                                          val,
+                                          aTypeOffset,
+                                          aRecursionDepth + 1,
+                                          aCallGetters);
         if (NS_FAILED(rv)) {
           return rv;
         }
@@ -406,9 +414,10 @@ Key::DecodeJSValInternal(const unsigned char*& aPos, const unsigned char* aEnd,
 nsresult
 Key::EncodeJSVal(JSContext* aCx,
                  JS::Handle<JS::Value> aVal,
-                 uint8_t aTypeOffset)
+                 uint8_t aTypeOffset,
+                 bool aCallGetters)
 {
-  return EncodeJSValInternal(aCx, aVal, aTypeOffset, 0);
+  return EncodeJSValInternal(aCx, aVal, aTypeOffset, 0, aCallGetters);
 }
 
 void
@@ -741,7 +750,8 @@ Key::SetFromValueArray(mozIStorageValueArray* aValues,
 
 nsresult
 Key::SetFromJSVal(JSContext* aCx,
-                  JS::Handle<JS::Value> aVal)
+                  JS::Handle<JS::Value> aVal,
+                  bool aCallGetters)
 {
   mBuffer.Truncate();
 
@@ -750,7 +760,7 @@ Key::SetFromJSVal(JSContext* aCx,
     return NS_OK;
   }
 
-  nsresult rv = EncodeJSVal(aCx, aVal, 0);
+  nsresult rv = EncodeJSVal(aCx, aVal, 0, aCallGetters);
   if (NS_FAILED(rv)) {
     Unset();
     return rv;
@@ -793,9 +803,15 @@ Key::ToJSVal(JSContext* aCx,
 }
 
 nsresult
-Key::AppendItem(JSContext* aCx, bool aFirstOfArray, JS::Handle<JS::Value> aVal)
+Key::AppendItem(JSContext* aCx,
+                bool aFirstOfArray,
+                JS::Handle<JS::Value> aVal,
+                bool aCallGetters)
 {
-  nsresult rv = EncodeJSVal(aCx, aVal, aFirstOfArray ? eMaxType : 0);
+  nsresult rv = EncodeJSVal(aCx,
+                            aVal,
+                            aFirstOfArray ? eMaxType : 0,
+                            aCallGetters);
   if (NS_FAILED(rv)) {
     Unset();
     return rv;

dom/indexedDB/Key.h

@@ -203,7 +203,7 @@ public:
   }
 
   nsresult
-  SetFromJSVal(JSContext* aCx, JS::Handle<JS::Value> aVal);
+  SetFromJSVal(JSContext* aCx, JS::Handle<JS::Value> aVal, bool aCallGetters);
 
   nsresult
   ToJSVal(JSContext* aCx, JS::MutableHandle<JS::Value> aVal) const;
@@ -212,7 +212,10 @@ public:
   ToJSVal(JSContext* aCx, JS::Heap<JS::Value>& aVal) const;
 
   nsresult
-  AppendItem(JSContext* aCx, bool aFirstOfArray, JS::Handle<JS::Value> aVal);
+  AppendItem(JSContext* aCx,
+             bool aFirstOfArray,
+             JS::Handle<JS::Value> aVal,
+             bool aCallGetters);
 
   nsresult
   ToLocaleBasedKey(Key& aTarget, const nsCString& aLocale) const;
@@ -283,7 +286,10 @@ private:
 
   // Encoding functions. These append the encoded value to the end of mBuffer
   nsresult
-  EncodeJSVal(JSContext* aCx, JS::Handle<JS::Value> aVal, uint8_t aTypeOffset);
+  EncodeJSVal(JSContext* aCx,
+              JS::Handle<JS::Value> aVal,
+              uint8_t aTypeOffset,
+              bool aCallGetters);
 
   void
   EncodeString(const nsAString& aString, uint8_t aTypeOffset);
@@ -331,7 +337,8 @@ private:
   EncodeJSValInternal(JSContext* aCx,
                       JS::Handle<JS::Value> aVal,
                       uint8_t aTypeOffset,
-                      uint16_t aRecursionDepth);
+                      uint16_t aRecursionDepth,
+                      bool aCallGetters);
 
   static nsresult
   DecodeJSValInternal(const unsigned char*& aPos,

dom/indexedDB/KeyPath.cpp

@@ -372,11 +372,13 @@ KeyPath::AppendStringWithValidation(const nsAString& aString)
 }
 
 nsresult
-KeyPath::ExtractKey(JSContext* aCx, const JS::Value& aValue, Key& aKey) const
+KeyPath::ExtractKey(JSContext* aCx,
+                    const JS::Value& aValue,
+                    Key& aKey,
+                    bool aCallGetters) const
 {
   uint32_t len = mStrings.Length();
   JS::Rooted<JS::Value> value(aCx);
-
   aKey.Unset();
 
   for (uint32_t i = 0; i < len; ++i) {
@@ -388,7 +390,10 @@ KeyPath::ExtractKey(JSContext* aCx, const JS::Value& aValue, Key& aKey) const
       return rv;
     }
 
-    if (NS_FAILED(aKey.AppendItem(aCx, IsArray() && i == 0, value))) {
+    if (NS_FAILED(aKey.AppendItem(aCx,
+                                  IsArray() && i == 0,
+                                  value,
+                                  aCallGetters))) {
       NS_ASSERTION(aKey.IsUnset(), "Encoding error should unset");
       return NS_ERROR_DOM_INDEXEDDB_DATA_ERR;
     }
@@ -437,9 +442,12 @@ KeyPath::ExtractKeyAsJSVal(JSContext* aCx, const JS::Value& aValue,
 }
 
 nsresult
-KeyPath::ExtractOrCreateKey(JSContext* aCx, const JS::Value& aValue,
+KeyPath::ExtractOrCreateKey(JSContext* aCx,
-                            Key& aKey, ExtractOrCreateKeyCallback aCallback,
+                            const JS::Value& aValue,
-                            void* aClosure) const
+                            Key& aKey,
+                            ExtractOrCreateKeyCallback aCallback,
+                            void* aClosure,
+                            bool aCallGetters) const
 {
   NS_ASSERTION(IsString(), "This doesn't make sense!");
 
@@ -455,7 +463,7 @@ KeyPath::ExtractOrCreateKey(JSContext* aCx, const JS::Value& aValue,
     return rv;
   }
 
-  if (NS_FAILED(aKey.AppendItem(aCx, false, value))) {
+  if (NS_FAILED(aKey.AppendItem(aCx, false, value, aCallGetters))) {
     NS_ASSERTION(aKey.IsUnset(), "Should be unset");
     return value.isUndefined() ? NS_OK : NS_ERROR_DOM_INDEXEDDB_DATA_ERR;
   }

dom/indexedDB/KeyPath.h

@@ -72,7 +72,10 @@ public:
   Parse(const Nullable<OwningStringOrStringSequence>& aValue, KeyPath* aKeyPath);
 
   nsresult
-  ExtractKey(JSContext* aCx, const JS::Value& aValue, Key& aKey) const;
+  ExtractKey(JSContext* aCx,
+             const JS::Value& aValue,
+             Key& aKey,
+             bool aCallGetters) const;
 
   nsresult
   ExtractKeyAsJSVal(JSContext* aCx, const JS::Value& aValue,
@@ -82,9 +85,12 @@ public:
   (*ExtractOrCreateKeyCallback)(JSContext* aCx, void* aClosure);
 
   nsresult
-  ExtractOrCreateKey(JSContext* aCx, const JS::Value& aValue, Key& aKey,
+  ExtractOrCreateKey(JSContext* aCx,
+                     const JS::Value& aValue,
+                     Key& aKey,
                      ExtractOrCreateKeyCallback aCallback,
-                     void* aClosure) const;
+                     void* aClosure,
+                     bool aCallGetters) const;
 
   inline bool IsValid() const {
     return mType != NONEXISTENT;

js/src/jsapi.cpp

@@ -2010,6 +2010,28 @@ JS_GetOwnUCPropertyDescriptor(JSContext* cx, HandleObject obj, const char16_t* n
     return JS_GetOwnPropertyDescriptorById(cx, obj, id, desc);
 }
 
+JS_PUBLIC_API(bool)
+JS_GetOwnElement(JSContext* cx, JS::HandleObject obj, uint32_t index, JS::MutableHandleValue vp)
+{
+    RootedId id(cx);
+    if (!IndexToId(cx, index, &id)) {
+        return false;
+    }
+
+    Rooted<PropertyDescriptor> desc(cx);
+    if (!JS_GetOwnPropertyDescriptorById(cx, obj, id, &desc)) {
+        return false;
+    }
+
+    if (desc.object() && desc.isDataDescriptor()) {
+        vp.set(desc.value());
+    } else {
+        vp.setUndefined();
+    }
+
+    return true;
+}
+
 JS_PUBLIC_API(bool)
 JS_GetPropertyDescriptorById(JSContext* cx, HandleObject obj, HandleId id,
                              MutableHandle<PropertyDescriptor> desc)

js/src/jsapi.h

@@ -2922,6 +2922,9 @@ extern JS_PUBLIC_API(bool)
 JS_GetOwnUCPropertyDescriptor(JSContext* cx, JS::HandleObject obj, const char16_t* name, size_t namelen,
                               JS::MutableHandle<JS::PropertyDescriptor> desc);
 
+extern JS_PUBLIC_API(bool)
+JS_GetOwnElement(JSContext* cx, JS::HandleObject obj, uint32_t index, JS::MutableHandleValue vp);
+
 /**
  * Like JS_GetOwnPropertyDescriptorById, but also searches the prototype chain
  * if no own property is found directly on obj. The object on which the