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/* $Id$ */
/** @file core/address.h Wrapper for network addresses. */
#ifndef NETWORK_ADDRESS_H
#define NETWORK_ADDRESS_H
#ifdef ENABLE_NETWORK
#include "os_abstraction.h"
/**
* Wrapper for (un)resolved network addresses; there's no reason to transform
* a numeric IP to a string and then back again to pass it to functions. It
* furthermore allows easier delaying of the hostname lookup.
*/
class NetworkAddress {
private:
bool resolved; ///< Has the IP address been resolved
char *hostname; ///< The hostname, NULL if there isn't one
sockaddr_storage address; ///< The resolved address
public:
/**
* Create a network address based on a resolved IP and port
* @param ip the resolved ip
* @param port the port
*/
NetworkAddress(in_addr_t ip, uint16 port) :
resolved(true),
hostname(NULL)
{
memset(&this->address, 0, sizeof(this->address));
this->address.ss_family = AF_INET;
((struct sockaddr_in*)&this->address)->sin_addr.s_addr = ip;
this->SetPort(port);
}
/**
* Create a network address based on a resolved IP and port
* @param address the IP address with port
*/
NetworkAddress(struct sockaddr_storage &address) :
resolved(true),
hostname(NULL),
address(address)
{
}
/**
* Create a network address based on a unresolved host and port
* @param ip the unresolved hostname
* @param port the port
*/
NetworkAddress(const char *hostname = NULL, uint16 port = 0) :
resolved(false),
hostname(hostname == NULL ? NULL : strdup(hostname))
{
memset(&this->address, 0, sizeof(this->address));
this->address.ss_family = AF_INET;
this->SetPort(port);
}
/**
* Make a clone of another address
* @param address the address to clone
*/
NetworkAddress(const NetworkAddress &address) :
resolved(address.resolved),
hostname(address.hostname == NULL ? NULL : strdup(address.hostname)),
address(address.address)
{
}
/** Clean up our mess */
~NetworkAddress()
{
free(hostname);
}
/**
* Get the hostname; in case it wasn't given the
* IPv4 dotted representation is given.
* @return the hostname
*/
const char *GetHostname();
/**
* Get the address as a string, e.g. 127.0.0.1:12345.
* @return the address
*/
const char *GetAddressAsString();
/**
* Get the address in it's internal representation.
* @return the address
*/
const sockaddr_storage *GetAddress();
/**
* Get the port
* @return the port
*/
uint16 GetPort() const;
/**
* Set the port
* @param port set the port number
*/
void SetPort(uint16 port);
/**
* Check whether the IP address has been resolved already
* @return true iff the port has been resolved
*/
bool IsResolved() const
{
return this->resolved;
}
/**
* Compare the address of this class with the address of another.
* @param address the other address.
*/
bool operator == (NetworkAddress &address)
{
if (this->IsResolved() && address.IsResolved()) return memcmp(&this->address, &address.address, sizeof(this->address)) == 0;
return this->GetPort() == address.GetPort() && strcmp(this->GetHostname(), address.GetHostname()) == 0;
}
/**
* Assign another address to ourself
* @param other obviously the address to assign to us
* @return 'this'
*/
NetworkAddress& operator = (const NetworkAddress &other)
{
if (this != &other) { // protect against invalid self-assignment
free(this->hostname);
memcpy(this, &other, sizeof(*this));
if (other.hostname != NULL) this->hostname = strdup(other.hostname);
}
return *this;
}
/**
* Connect to the given address.
* @return the connected socket or INVALID_SOCKET.
*/
SOCKET Connect();
};
#endif /* ENABLE_NETWORK */
#endif /* NETWORK_ADDRESS_H */
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