CWE-ou-minkata/Sources/Plasma/NucleusLib/pnNetCommon/plNetAddress.h

/*==LICENSE==*

CyanWorlds.com Engine - MMOG client, server and tools
Copyright (C) 2011  Cyan Worlds, Inc.

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it under the terms of the GNU General Public License as published by
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GNU General Public License for more details.

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along with this program.  If not, see <http://www.gnu.org/licenses/>.

Additional permissions under GNU GPL version 3 section 7

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*==LICENSE==*/
#ifndef SERVER

#ifndef plNetAddress_h_inc
#define plNetAddress_h_inc

#include "HeadSpin.h"
#include "plString.h"

#include "hsStlUtils.h"
#include "hsStream.h"

#if defined(HS_BUILD_FOR_WIN32)

#elif defined( HS_BUILD_FOR_UNIX )
#include <sys/socket.h>
#include <netinet/in.h>
#include <arpa/inet.h>
#include <netdb.h>
#else
#error  "Must Include net stuff for this OS here"
#endif


#ifdef SetPort
#undef SetPort
#endif

typedef sockaddr_in  AddressType;

/**
 * A class representing a network address endpoint, as a pair of host address
 * and port number.
 *
 * Internally, this class stores the network address using the sockaddr_in
 * structure, but provides methods to transparently get and set the host
 * address and port.
 */
class plNetAddress
{
    // fAddr must be first field
    AddressType     fAddr;

public:
    /**
     * Initializes an empty network address.
     * All the fields of the sockaddr will be zeroed.
     */
    plNetAddress();

    /**
     * Initializes a new network address from the given IPv4 address and port
     * number.
     *
     * @param addr The IPv4 address as a 32-bit network byte order integer.
     * @param port The port number as a 16-bit host order integer.
     */
    plNetAddress(uint32_t addr, uint16_t port);

    /**
     * Initializes a new network address from the given hostname and port
     * number.
     *
     * @param addr The DNS hostname of the host.
     * @param port The port number as a 16-bit host order integer.
     */
    plNetAddress(const char* addr, uint16_t port);

    virtual ~plNetAddress(){}

    bool operator==(const plNetAddress& other) const {
        return (GetHost() == other.GetHost()) && (GetPort() == other.GetPort());
    }

    bool operator!=(const plNetAddress& other) const {
        return !(*this == other);
    }

    /**
     * Clears the address and zeros out the sockaddr fields.
     */
    void Clear();

    /**
     * Sets the address to INADDR_ANY for binding to any host.
     */
    bool SetAnyAddr();

    /**
     * Sets the port number to 0 to allow binding to any port.
     */
    bool SetAnyPort();

    /**
     * Gets the port number of the host.
     *
     * @return The host port number.
     */
    uint16_t GetPort() const;

    /**
     * Sets the port number of the host.
     *
     * @param port The port number in host byte order.
     */
    bool SetPort(uint16_t port);

    /**
     * Gets the IPv4 address of the host as a 32-bit integer in network byte
     * order (big endian).
     *
     * @return The IPv4 host address.
     */
    uint32_t GetHost() const;

    /**
     * Sets the IPv4 address of the host from a DNS name.
     *
     * @param hostname The DNS name of the host.
     */
    bool SetHost(const char* hostname);

    /**
     * Sets the IPv4 address of the host from an unsigned 32-bit integer in
     * network byte order (big endian).
     *
     * @param ip4addr The host IPv4 address in network byte order.
     */
    bool SetHost(uint32_t ip4addr);

    /**
     * Retrieves the internal address type.
     *
     * @return A constant sockaddr_in.
     */
    const AddressType& GetAddressInfo() const { return fAddr; }

    /**
     * Retrieves the internal address type.
     *
     * @return A sockaddr_in.
     */
    AddressType& GetAddressInfo() { return fAddr; }

    /**
     * Returns the IPv4 address of the host as a string in 4-octet dotted
     * notation.
     *
     * @return A string of the IPv4 host address.
     */
    plString GetHostString() const;

    /**
     * Return the IPv4 address and port number of the host as a string in
     * 4-octet dotted notation with a colon separated port.
     *
     * @return A string of the IPv4 host address and port number.
     */
    plString GetHostWithPort() const;

    /**
     * Returns a string representation of the host address and port number.
     *
     * @return A string representation of the address.
     */
    plString AsString() const;

    /**
     * Reads and deserializes the address from a stream.
     *
     * @param stream The stream from which to read the address.
     */
    void Read(hsStream * stream);

    /**
     * Serializes and writes the address to a stream.
     *
     * @param stream The stream to which to write the address.
     */
    void Write(hsStream * stream);
};



#endif // plNetAddress_h_inc
#endif // SERVER