Source/bindings/v8/BindingSecurity.cpp

/*
 * Copyright (C) 2009 Google Inc. All rights reserved.
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 * modification, are permitted provided that the following conditions are
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#include "config.h"
#include "bindings/v8/BindingSecurity.h"

#include "bindings/v8/V8Binding.h"
#include "core/dom/Document.h"
#include "core/html/HTMLFrameElementBase.h"
#include "core/html/parser/HTMLParserIdioms.h"
#include "core/page/DOMWindow.h"
#include "core/page/Frame.h"
#include "core/page/Settings.h"
#include "origin/SecurityOrigin.h"

namespace WebCore {

static bool canAccessDocument(Document* targetDocument, SecurityReportingOption reportingOption = ReportSecurityError)
{
    if (!targetDocument)
        return false;

    DOMWindow* active = activeDOMWindow();
    if (!active)
        return false;

    if (active->document()->securityOrigin()->canAccess(targetDocument->securityOrigin()))
        return true;

    if (reportingOption == ReportSecurityError) {
        if (Frame* frame = targetDocument->frame())
            frame->document()->domWindow()->printErrorMessage(targetDocument->domWindow()->crossDomainAccessErrorMessage(active));
    }

    return false;
}

bool BindingSecurity::shouldAllowAccessToDOMWindow(DOMWindow* target, SecurityReportingOption reportingOption)
{
    return target && canAccessDocument(target->document(), reportingOption);
}

bool BindingSecurity::shouldAllowAccessToFrame(Frame* target, SecurityReportingOption reportingOption)
{
    return target && canAccessDocument(target->document(), reportingOption);
}

bool BindingSecurity::shouldAllowAccessToNode(Node* target)
{
    return target && canAccessDocument(target->document());
}

bool BindingSecurity::allowSettingFrameSrcToJavascriptUrl(HTMLFrameElementBase* frame, const String& value)
{
    return !protocolIsJavaScript(stripLeadingAndTrailingHTMLSpaces(value)) || canAccessDocument(frame->contentDocument());
}

}