/*

 * 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

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 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

 */

#include "config.h"

#include "OriginAccessEntry.h"

#include "SecurityOrigin.h"

namespace WebCore {

OriginAccessEntry::OriginAccessEntry(const String& protocol, const String& host, SubdomainSetting subdomainSetting)

    : m_protocol(protocol.lower())

    , m_host(host.lower())

    , m_subdomainSettings(subdomainSetting)

{

    ASSERT(m_protocol == "http" || m_protocol == "https");

    ASSERT(subdomainSetting == AllowSubdomains || subdomainSetting == DisallowSubdomains);

    // Assume that any host that ends with a digit is trying to be an IP address.

    m_hostIsIPAddress = !m_host.isEmpty() && isASCIIDigit(m_host[m_host.length() - 1]);

}

bool OriginAccessEntry::matchesOrigin(const SecurityOrigin& origin) const

{

    ASSERT(origin.host() == origin.host().lower());

    ASSERT(origin.protocol() == origin.protocol().lower());

    if (m_protocol != origin.protocol())

        return false;

    // Special case: Include subdomains and empty host means "all hosts, including ip addresses".

    if (m_subdomainSettings == AllowSubdomains && m_host.isEmpty())

        return true;

    // Exact match.

    if (m_host == origin.host())

        return true;

    // Otherwise we can only match if we're matching subdomains.

    if (m_subdomainSettings == DisallowSubdomains)

        return false;

    // Don't try to do subdomain matching on IP addresses.

    if (m_hostIsIPAddress)

        return false;

    // Match subdomains.

    if (origin.host().length() > m_host.length() && origin.host()[origin.host().length() - m_host.length() - 1] == '.' && origin.host().endsWith(m_host))

        return true;

    return false;

}

} // namespace WebCore