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authorwolfbeast <mcwerewolf@gmail.com>2018-11-02 10:32:53 +0100
committerwolfbeast <mcwerewolf@gmail.com>2018-11-02 10:32:53 +0100
commitdeba73b3bc9168838034c2b5bab4b7d2945bfaaf (patch)
treeb83278806048b9baf39c4d088ee87049116de1bd /dom/indexedDB/KeyPath.cpp
parent09fec033ec18a5c0eb29815924114016cee32a00 (diff)
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Fix a longstanding IndexedDB correctness issue.
Standards Compliance fix, port of Bug 1492737
Diffstat (limited to 'dom/indexedDB/KeyPath.cpp')
-rw-r--r--dom/indexedDB/KeyPath.cpp77
1 files changed, 69 insertions, 8 deletions
diff --git a/dom/indexedDB/KeyPath.cpp b/dom/indexedDB/KeyPath.cpp
index dc8d10668..30edd8cd7 100644
--- a/dom/indexedDB/KeyPath.cpp
+++ b/dom/indexedDB/KeyPath.cpp
@@ -14,6 +14,7 @@
#include "xpcpublic.h"
#include "mozilla/dom/BindingDeclarations.h"
+#include "mozilla/dom/BlobBinding.h"
#include "mozilla/dom/IDBObjectStoreBinding.h"
namespace mozilla {
@@ -100,7 +101,6 @@ GetJSValFromKeyPathString(JSContext* aCx,
const char16_t* keyPathChars = token.BeginReading();
const size_t keyPathLen = token.Length();
- bool hasProp;
if (!targetObject) {
// We're still walking the chain of existing objects
// http://w3c.github.io/IndexedDB/#dfn-evaluate-a-key-path-on-a-value
@@ -116,16 +116,77 @@ GetJSValFromKeyPathString(JSContext* aCx,
}
obj = &currentVal.toObject();
- bool ok = JS_HasUCProperty(aCx, obj, keyPathChars, keyPathLen,
- &hasProp);
+ // We call JS_GetOwnUCPropertyDescriptor on purpose (as opposed to
+ // JS_GetUCPropertyDescriptor) to avoid searching the prototype chain.
+ JS::Rooted<JS::PropertyDescriptor> desc(aCx);
+ bool ok = JS_GetOwnUCPropertyDescriptor(aCx, obj, keyPathChars,
+ keyPathLen, &desc);
IDB_ENSURE_TRUE(ok, NS_ERROR_DOM_INDEXEDDB_UNKNOWN_ERR);
- if (hasProp) {
- // Get if the property exists...
- JS::Rooted<JS::Value> intermediate(aCx);
- bool ok = JS_GetUCProperty(aCx, obj, keyPathChars, keyPathLen, &intermediate);
- IDB_ENSURE_TRUE(ok, NS_ERROR_DOM_INDEXEDDB_UNKNOWN_ERR);
+ JS::Rooted<JS::Value> intermediate(aCx);
+ bool hasProp = false;
+
+ if (desc.object()) {
+ intermediate = desc.value();
+ hasProp = true;
+ } else {
+ // If we get here it means the object doesn't have the property or the
+ // property is available throuch a getter. We don't want to call any
+ // getters to avoid potential re-entrancy.
+ // The blob object is special since its properties are available
+ // only through getters but we still want to support them for key
+ // extraction. So they need to be handled manually.
+ Blob* blob;
+ if (NS_SUCCEEDED(UNWRAP_OBJECT(Blob, &obj, blob))) {
+ if (token.EqualsLiteral("size")) {
+ ErrorResult rv;
+ uint64_t size = blob->GetSize(rv);
+ MOZ_ALWAYS_TRUE(!rv.Failed());
+
+ intermediate = JS_NumberValue(size);
+ hasProp = true;
+ } else if (token.EqualsLiteral("type")) {
+ nsString type;
+ blob->GetType(type);
+
+ JSString* string =
+ JS_NewUCStringCopyN(aCx, type.get(), type.Length());
+
+ intermediate = JS::StringValue(string);
+ hasProp = true;
+ } else {
+ RefPtr<File> file = blob->ToFile();
+ if (file) {
+ if (token.EqualsLiteral("name")) {
+ nsString name;
+ file->GetName(name);
+
+ JSString* string =
+ JS_NewUCStringCopyN(aCx, name.get(), name.Length());
+
+ intermediate = JS::StringValue(string);
+ hasProp = true;
+ } else if (token.EqualsLiteral("lastModified")) {
+ ErrorResult rv;
+ int64_t lastModifiedDate = file->GetLastModified(rv);
+ MOZ_ALWAYS_TRUE(!rv.Failed());
+
+ intermediate = JS_NumberValue(lastModifiedDate);
+ hasProp = true;
+ } else if (token.EqualsLiteral("lastModifiedDate")) {
+ ErrorResult rv;
+ Date lastModifiedDate = file->GetLastModifiedDate(rv);
+ MOZ_ALWAYS_TRUE(!rv.Failed());
+
+ lastModifiedDate.ToDateObject(aCx, &intermediate);
+ hasProp = true;
+ }
+ }
+ }
+ }
+ }
+ if (hasProp) {
// Treat explicitly undefined as an error.
if (intermediate.isUndefined()) {
return NS_ERROR_DOM_INDEXEDDB_DATA_ERR;