/*
 * Copyright (C) 2007 Apple 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:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. 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.
 *
 * THIS SOFTWARE IS PROVIDED BY APPLE COMPUTER, INC. ``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 APPLE COMPUTER, INC. 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. 
 */
#pragma once

#include <wtf/text/WTFString.h>

namespace WebCore {

enum ProtectionSpaceServerType {
    ProtectionSpaceServerHTTP = 1,
    ProtectionSpaceServerHTTPS = 2,
    ProtectionSpaceServerFTP = 3,
    ProtectionSpaceServerFTPS = 4,
    ProtectionSpaceProxyHTTP = 5,
    ProtectionSpaceProxyHTTPS = 6,
    ProtectionSpaceProxyFTP = 7,
    ProtectionSpaceProxySOCKS = 8
};

enum ProtectionSpaceAuthenticationScheme {
    ProtectionSpaceAuthenticationSchemeDefault = 1,
    ProtectionSpaceAuthenticationSchemeHTTPBasic = 2,
    ProtectionSpaceAuthenticationSchemeHTTPDigest = 3,
    ProtectionSpaceAuthenticationSchemeHTMLForm = 4,
    ProtectionSpaceAuthenticationSchemeNTLM = 5,
    ProtectionSpaceAuthenticationSchemeNegotiate = 6,
    ProtectionSpaceAuthenticationSchemeClientCertificateRequested = 7,
    ProtectionSpaceAuthenticationSchemeServerTrustEvaluationRequested = 8,
    ProtectionSpaceAuthenticationSchemeUnknown = 100
};
  
class ProtectionSpace {

public:
	// Need to enforce empty, non-null strings due to the pickiness of the String == String operator
	// combined with the semantics of the String(NSString*) constructor
	ProtectionSpace()
    : m_host(emptyString())
    , m_port(0)
    , m_serverType(ProtectionSpaceServerHTTP)
    , m_realm(emptyString())
    , m_authenticationScheme(ProtectionSpaceAuthenticationSchemeDefault)
    , m_isHashTableDeletedValue(false)
	{
	}
	
    ProtectionSpace(const String& host, int port, ProtectionSpaceServerType, const String& realm, ProtectionSpaceAuthenticationScheme);

    // Hash table deleted values, which are only constructed and never copied or destroyed.
    ProtectionSpace(WTF::HashTableDeletedValueType) : m_isHashTableDeletedValue(true) { }
    bool isHashTableDeletedValue() const { return m_isHashTableDeletedValue; }
    
    const String& host() const { return m_host; }
    int port() const { return m_port; }
    ProtectionSpaceServerType serverType() const { return m_serverType; }
    bool isProxy() const;
    const String& realm() const { return m_realm; }
    ProtectionSpaceAuthenticationScheme authenticationScheme() const { return m_authenticationScheme; }
    
    bool receivesCredentialSecurely() const;

private:
    String m_host;
    int m_port { 0 };
    ProtectionSpaceServerType m_serverType { ProtectionSpaceServerHTTP };
    String m_realm;
    ProtectionSpaceAuthenticationScheme m_authenticationScheme { ProtectionSpaceAuthenticationSchemeDefault };
    bool m_isHashTableDeletedValue { false };
};

bool operator==(const ProtectionSpace& a, const ProtectionSpace& b);
inline bool operator!=(const ProtectionSpace& a, const ProtectionSpace& b) { return !(a == b); }

inline bool ProtectionSpace::isProxy() const
{
    return (m_serverType == ProtectionSpaceProxyHTTP ||
            m_serverType == ProtectionSpaceProxyHTTPS ||
            m_serverType == ProtectionSpaceProxyFTP ||
            m_serverType == ProtectionSpaceProxySOCKS);
}

inline bool operator==(const ProtectionSpace& a, const ProtectionSpace& b)
{
    if (a.host() != b.host())
        return false;
    if (a.port() != b.port())
        return false;
    if (a.serverType() != b.serverType())
        return false;
    // Ignore realm for proxies
    if (!a.isProxy() && a.realm() != b.realm())
        return false;
    if (a.authenticationScheme() != b.authenticationScheme())
        return false;
    
    return true;
}

} // namespace WebCore
