/*
 * Copyright (C) 2009 Google Inc. All rights reserved.
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 * 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.
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 * 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
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 */

#ifndef WebSecurityPolicy_h
#define WebSecurityPolicy_h

#include "WebCommon.h"

namespace WebKit {

class WebString;
class WebURL;

class WebSecurityPolicy {
public:
    // Registers a URL scheme to be treated as a local scheme (i.e., with the
    // same security rules as those applied to "file" URLs). This means that
    // normal pages cannot link to or access URLs of this scheme.
    WEBKIT_EXPORT static void registerURLSchemeAsLocal(const WebString&);

    // Registers a URL scheme to be treated as a noAccess scheme. This means
    // that pages loaded with this URL scheme cannot access pages loaded with
    // any other URL scheme.
    WEBKIT_EXPORT static void registerURLSchemeAsNoAccess(const WebString&);

    // Registers a URL scheme to be treated as display-isolated. This means
    // that pages cannot display these URLs unless they are from the same
    // scheme. For example, pages in other origin cannot create iframes or
    // hyperlinks to URLs with the scheme.
    WEBKIT_EXPORT static void registerURLSchemeAsDisplayIsolated(const WebString&);

    // Registers a URL scheme to not generate mixed content warnings when
    // included by an HTTPS page.
    WEBKIT_EXPORT static void registerURLSchemeAsSecure(const WebString&);

    // Support for whitelisting access to origins beyond the same-origin policy.
    WEBKIT_EXPORT static void addOriginAccessWhitelistEntry(
        const WebURL& sourceOrigin, const WebString& destinationProtocol,
        const WebString& destinationHost, bool allowDestinationSubdomains);
    WEBKIT_EXPORT static void removeOriginAccessWhitelistEntry(
        const WebURL& sourceOrigin, const WebString& destinationProtocol,
        const WebString& destinationHost, bool allowDestinationSubdomains);
    WEBKIT_EXPORT static void resetOriginAccessWhitelists();

    // Returns whether the url should be allowed to see the referrer
    // based on their respective protocols.
    WEBKIT_EXPORT static bool shouldHideReferrer(const WebURL& url, const WebString& referrer);

private:
    WebSecurityPolicy();
};

} // namespace WebKit

#endif
