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/* $Id$ */
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/** @file core/address.cpp Implementation of the address. */
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#include "../../stdafx.h"
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#ifdef ENABLE_NETWORK
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#include "address.h"
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#include "config.h"
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#include "host.h"
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#include "../../string_func.h"
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#include "../../debug.h"
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const char *NetworkAddress::GetHostname()
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{
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if (this->hostname == NULL) {
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assert(this->address_length != 0);
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char buf[NETWORK_HOSTNAME_LENGTH] = { '\0' };
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getnameinfo((struct sockaddr *)&this->address, this->address_length, buf, sizeof(buf), NULL, 0, NI_NUMERICHOST);
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this->hostname = strdup(buf);
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}
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return this->hostname;
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}
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uint16 NetworkAddress::GetPort() const
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{
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switch (this->address.ss_family) {
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case AF_INET:
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return ntohs(((struct sockaddr_in *)&this->address)->sin_port);
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default:
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NOT_REACHED();
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}
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}
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void NetworkAddress::SetPort(uint16 port)
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{
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switch (this->address.ss_family) {
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case AF_INET:
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((struct sockaddr_in*)&this->address)->sin_port = htons(port);
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break;
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default:
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NOT_REACHED();
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}
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}
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const char *NetworkAddress::GetAddressAsString()
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{
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/* 6 = for the : and 5 for the decimal port number */
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static char buf[NETWORK_HOSTNAME_LENGTH + 6];
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seprintf(buf, lastof(buf), "%s:%d", this->GetHostname(), this->GetPort());
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return buf;
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}
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/**
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* Helper function to resolve without opening a socket.
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* @param runp information about the socket to try not
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* @return the opened socket or INVALID_SOCKET
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*/
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static SOCKET ResolveLoopProc(addrinfo *runp)
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{
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/* We just want the first 'entry', so return a valid socket. */
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return !INVALID_SOCKET;
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}
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const sockaddr_storage *NetworkAddress::GetAddress()
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{
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if (!this->IsResolved()) this->Resolve(this->address.ss_family, 0, AI_ADDRCONFIG, ResolveLoopProc);
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return &this->address;
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}
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SOCKET NetworkAddress::Resolve(int family, int socktype, int flags, LoopProc func)
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{
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struct addrinfo *ai;
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struct addrinfo hints;
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memset(&hints, 0, sizeof (hints));
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hints.ai_family = family;
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hints.ai_flags = flags;
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hints.ai_socktype = socktype;
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/* The port needs to be a string. Six is enough to contain all characters + '\0'. */
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char port_name[6];
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seprintf(port_name, lastof(port_name), "%u", this->GetPort());
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int e = getaddrinfo(this->GetHostname(), port_name, &hints, &ai);
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if (e != 0) {
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DEBUG(net, 0, "getaddrinfo failed: %s", gai_strerror(e));
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return INVALID_SOCKET;
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}
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SOCKET sock = INVALID_SOCKET;
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for (struct addrinfo *runp = ai; runp != NULL; runp = runp->ai_next) {
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sock = func(runp);
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if (sock == INVALID_SOCKET) continue;
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this->address_length = runp->ai_addrlen;
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assert(sizeof(this->address) >= runp->ai_addrlen);
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memcpy(&this->address, runp->ai_addr, runp->ai_addrlen);
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break;
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}
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freeaddrinfo (ai);
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return sock;
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}
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/**
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* Helper function to resolve a connected socket.
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* @param runp information about the socket to try not
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* @return the opened socket or INVALID_SOCKET
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*/
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static SOCKET ConnectLoopProc(addrinfo *runp)
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{
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SOCKET sock = socket(runp->ai_family, runp->ai_socktype, runp->ai_protocol);
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if (sock == INVALID_SOCKET) {
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DEBUG(net, 1, "Could not create socket: %s", strerror(errno));
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return INVALID_SOCKET;
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}
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if (!SetNoDelay(sock)) DEBUG(net, 1, "Setting TCP_NODELAY failed");
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if (connect(sock, runp->ai_addr, runp->ai_addrlen) != 0) {
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DEBUG(net, 1, "Could not connect socket: %s", strerror(errno));
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return INVALID_SOCKET;
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}
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/* Connection succeeded */
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if (!SetNonBlocking(sock)) DEBUG(net, 0, "Setting non-blocking mode failed");
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return sock;
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}
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SOCKET NetworkAddress::Connect()
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{
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DEBUG(net, 1, "Connecting to %s", this->GetAddressAsString());
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return this->Resolve(0, SOCK_STREAM, AI_ADDRCONFIG, ConnectLoopProc);
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}
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/**
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* Helper function to resolve a listening.
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* @param runp information about the socket to try not
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* @return the opened socket or INVALID_SOCKET
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*/
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static SOCKET ListenLoopProc(addrinfo *runp)
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{
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SOCKET sock = socket(runp->ai_family, runp->ai_socktype, runp->ai_protocol);
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if (sock == INVALID_SOCKET) {
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DEBUG(net, 1, "Could not create socket: %s", strerror(errno));
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return INVALID_SOCKET;
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}
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if (!SetNoDelay(sock)) DEBUG(net, 1, "Setting TCP_NODELAY failed");
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if (bind(sock, runp->ai_addr, runp->ai_addrlen) != 0) {
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DEBUG(net, 1, "Could not bind: %s", strerror(errno));
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closesocket(sock);
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return INVALID_SOCKET;
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}
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if (runp->ai_socktype != SOCK_DGRAM && listen(sock, 1) != 0) {
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DEBUG(net, 1, "Could not listen: %s", strerror(errno));
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closesocket(sock);
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return INVALID_SOCKET;
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}
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/* Connection succeeded */
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if (!SetNonBlocking(sock)) DEBUG(net, 0, "Setting non-blocking mode failed");
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return sock;
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}
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SOCKET NetworkAddress::Listen(int family, int socktype)
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{
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return this->Resolve(family, socktype, AI_ADDRCONFIG | AI_PASSIVE, ListenLoopProc);
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}
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#endif /* ENABLE_NETWORK */
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