# address.h

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    00001 /* $Id$ */
    00002
    00003 /*
    00004  * This file is part of OpenTTD.
    00005  * OpenTTD is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation, version 2.
    00006  * OpenTTD is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
    00007  * See the GNU General Public License for more details. You should have received a copy of the GNU General Public License along with OpenTTD. If not, see <http://www.gnu.org/licenses/>.
    00008  */
    00009
    00012 #ifndef NETWORK_CORE_ADDRESS_H
    00013 #define NETWORK_CORE_ADDRESS_H
    00014
    00015 #include "os_abstraction.h"
    00016 #include "config.h"
    00017 #include "../../string_func.h"
    00018 #include "../../core/smallmap_type.hpp"
    00019
    00020 #ifdef ENABLE_NETWORK
    00021
    00022 class NetworkAddress;
    00023 typedef SmallVector<NetworkAddress, 4> NetworkAddressList;
    00024 typedef SmallMap<NetworkAddress, SOCKET, 4> SocketList;
    00025
    00031 class NetworkAddress {
    00032 private:
    00033   char hostname[NETWORK_HOSTNAME_LENGTH];
    00034   int address_length;
    00035   sockaddr_storage address;
    00036   bool resolved;
    00037
    00043   typedef SOCKET (*LoopProc)(addrinfo *runp);
    00044
    00045   SOCKET Resolve(int family, int socktype, int flags, SocketList *sockets, LoopProc func);
    00046 public:
    00052   NetworkAddress(struct sockaddr_storage &address, int address_length) :
    00053     address_length(address_length),
    00054     address(address),
    00055     resolved(address_length != 0)
    00056   {
    00057     *this->hostname = '\0';
    00058   }
    00059
    00065   NetworkAddress(sockaddr *address, int address_length) :
    00066     address_length(address_length),
    00067     resolved(address_length != 0)
    00068   {
    00069     *this->hostname = '\0';
    00070     memset(&this->address, 0, sizeof(this->address));
    00071     memcpy(&this->address, address, address_length);
    00072   }
    00073
    00080   NetworkAddress(const char *hostname = "", uint16 port = 0, int family = AF_UNSPEC) :
    00081     address_length(0),
    00082     resolved(false)
    00083   {
    00084     /* Also handle IPv6 bracket enclosed hostnames */
    00085     if (StrEmpty(hostname)) hostname = "";
    00086     if (*hostname == '[') hostname++;
    00087     strecpy(this->hostname, StrEmpty(hostname) ? "" : hostname, lastof(this->hostname));
    00088     char *tmp = strrchr(this->hostname, ']');
    00089     if (tmp != NULL) *tmp = '\0';
    00090
    00091     memset(&this->address, 0, sizeof(this->address));
    00092     this->address.ss_family = family;
    00093     this->SetPort(port);
    00094   }
    00095
    00100   NetworkAddress(const NetworkAddress &address)
    00101   {
    00102     memcpy(this, &address, sizeof(*this));
    00103   }
    00104
    00105   const char *GetHostname();
    00106   void GetAddressAsString(char *buffer, const char *last, bool with_family = true);
    00107   const char *GetAddressAsString(bool with_family = true);
    00108   const sockaddr_storage *GetAddress();
    00109
    00114   int GetAddressLength()
    00115   {
    00116     /* Resolve it if we didn't do it already */
    00117     if (!this->IsResolved()) this->GetAddress();
    00118     return this->address_length;
    00119   }
    00120
    00121   uint16 GetPort() const;
    00122   void SetPort(uint16 port);
    00123
    00128   bool IsResolved() const
    00129   {
    00130     return this->resolved;
    00131   }
    00132
    00133   bool IsFamily(int family);
    00134   bool IsInNetmask(char *netmask);
    00135
    00141   int CompareTo(NetworkAddress &address)
    00142   {
    00143     int r = this->GetAddressLength() - address.GetAddressLength();
    00144     if (r == 0) r = this->address.ss_family - address.address.ss_family;
    00145     if (r == 0) r = memcmp(&this->address, &address.address, this->address_length);
    00146     if (r == 0) r = this->GetPort() - address.GetPort();
    00147     return r;
    00148   }
    00149
    00155   bool operator == (NetworkAddress &address)
    00156   {
    00157     return this->CompareTo(address) == 0;
    00158   }
    00159
    00165   bool operator == (NetworkAddress &address) const
    00166   {
    00167     return const_cast<NetworkAddress*>(this)->CompareTo(address) == 0;
    00168   }
    00174   bool operator != (NetworkAddress address) const
    00175   {
    00176     return const_cast<NetworkAddress*>(this)->CompareTo(address) != 0;
    00177   }
    00178
    00183   bool operator < (NetworkAddress &address)
    00184   {
    00185     return this->CompareTo(address) < 0;
    00186   }
    00187
    00188   SOCKET Connect();
    00189   void Listen(int socktype, SocketList *sockets);
    00190
    00191   static const char *SocketTypeAsString(int socktype);
    00192   static const char *AddressFamilyAsString(int family);
    00193 };
    00194
    00195 #endif /* ENABLE_NETWORK */
    00196 #endif /* NETWORK_CORE_ADDRESS_H */