Import Dart bindings as of Blink r188698. This merely copies the files over and does not attach any…

sky/engine/bindings-dart/common/BindingSecurity.cpp

+/*
+ * Copyright (C) 2009 Google Inc. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are
+ * met:
+ *
+ *     * Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ *     * Redistributions in binary form must reproduce the above
+ * copyright notice, this list of conditions and the following disclaimer
+ * in the documentation and/or other materials provided with the
+ * distribution.
+ *     * Neither the name of Google Inc. nor the names of its
+ * contributors may be used to endorse or promote products derived from
+ * this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#include "config.h"
+#include "bindings/common/BindingSecurity.h"
+
+#include "bindings/common/ScriptState.h"
+#include "core/dom/Document.h"
+#include "core/html/HTMLFrameElementBase.h"
+#include "core/frame/LocalDOMWindow.h"
+#include "core/frame/LocalFrame.h"
+#include "core/frame/Settings.h"
+#include "core/html/HTMLFrameElementBase.h"
+#include "platform/weborigin/SecurityOrigin.h"
+
+namespace blink {
+
+static bool isDocumentAccessibleFromDOMWindow(Document* targetDocument, LocalDOMWindow* callingWindow)
+{
+    if (!targetDocument)
+        return false;
+
+    if (!callingWindow)
+        return false;
+
+    if (callingWindow->document()->securityOrigin()->canAccess(targetDocument->securityOrigin()))
+        return true;
+
+    return false;
+}
+
+static bool canAccessDocument(ScriptState* scriptState, Document* targetDocument, ExceptionState& exceptionState)
+{
+    LocalDOMWindow* callingWindow = scriptState->callingDOMWindow();
+    if (isDocumentAccessibleFromDOMWindow(targetDocument, callingWindow))
+        return true;
+
+    if (targetDocument->domWindow())
+        exceptionState.throwSecurityError(targetDocument->domWindow()->sanitizedCrossDomainAccessErrorMessage(callingWindow), targetDocument->domWindow()->crossDomainAccessErrorMessage(callingWindow));
+    return false;
+}
+
+static bool canAccessDocument(ScriptState* scriptState, Document* targetDocument, SecurityReportingOption reportingOption = ReportSecurityError)
+{
+    LocalDOMWindow* callingWindow = scriptState->callingDOMWindow();
+    if (isDocumentAccessibleFromDOMWindow(targetDocument, callingWindow))
+        return true;
+
+    if (reportingOption == ReportSecurityError && targetDocument->domWindow()) {
+        if (LocalFrame* frame = targetDocument->frame())
+            frame->domWindow()->printErrorMessage(targetDocument->domWindow()->crossDomainAccessErrorMessage(callingWindow));
+    }
+
+    return false;
+}
+
+bool BindingSecurity::shouldAllowAccessToFrame(ScriptState* scriptState, Frame* target, SecurityReportingOption reportingOption)
+{
+    if (!target || !target->isLocalFrame())
+        return false;
+    return canAccessDocument(scriptState, toLocalFrame(target)->document(), reportingOption);
+}
+
+bool BindingSecurity::shouldAllowAccessToFrame(ScriptState* scriptState, Frame* target, ExceptionState& exceptionState)
+{
+    if (!target || !target->isLocalFrame())
+        return false;
+    return canAccessDocument(scriptState, toLocalFrame(target)->document(), exceptionState);
+}
+
+bool BindingSecurity::shouldAllowAccessToNode(ScriptState* scriptState, Node* target, ExceptionState& exceptionState)
+{
+    return target && canAccessDocument(scriptState, &target->document(), exceptionState);
+}
+
+}