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/* +------------------------------------+
* | Inspire Internet Relay Chat Daemon |
* +------------------------------------+
*
* InspIRCd: (C) 2002-2009 InspIRCd Development Team
* See: http://wiki.inspircd.org/Credits
*
* This program is free but copyrighted software; see
* the file COPYING for details.
*
* ---------------------------------------------------
*/
#include "inspircd.h"
#include "socket.h"
#include "xline.h"
#include "../transport.h"
#include "resolvers.h"
#include "main.h"
#include "utils.h"
#include "treeserver.h"
#include "link.h"
#include "treesocket.h"
/* $ModDep: m_spanningtree/resolvers.h m_spanningtree/main.h m_spanningtree/utils.h m_spanningtree/treeserver.h m_spanningtree/link.h m_spanningtree/treesocket.h */
/** This class is used to resolve server hostnames during /connect and autoconnect.
* As of 1.1, the resolver system is seperated out from BufferedSocket, so we must do this
* resolver step first ourselves if we need it. This is totally nonblocking, and will
* callback to OnLookupComplete or OnError when completed. Once it has completed we
* will have an IP address which we can then use to continue our connection.
*/
ServernameResolver::ServernameResolver(Module* me, SpanningTreeUtilities* Util, InspIRCd* Instance, const std::string &hostname, Link x, bool &cached, QueryType qt) : Resolver(Instance, hostname, qt, cached, me), MyLink(x), Utils(Util), query(qt), host(hostname), mine(me)
{
/* Nothing in here, folks */
}
void ServernameResolver::OnLookupComplete(const std::string &result, unsigned int ttl, bool cached)
{
/* Initiate the connection, now that we have an IP to use.
* Passing a hostname directly to BufferedSocket causes it to
* just bail and set its FD to -1.
*/
TreeServer* CheckDupe = Utils->FindServer(MyLink.Name.c_str());
if (!CheckDupe) /* Check that nobody tried to connect it successfully while we were resolving */
{
if ((!MyLink.Hook.empty()) && (Utils->hooks.find(MyLink.Hook.c_str()) == Utils->hooks.end()))
return;
TreeSocket* newsocket = new TreeSocket(this->Utils, ServerInstance, result,MyLink.Port,MyLink.Timeout ? MyLink.Timeout : 10,MyLink.Name.c_str(),
MyLink.Bind, MyLink.Hook.empty() ? NULL : Utils->hooks[MyLink.Hook.c_str()]);
if (newsocket->GetFd() > -1)
{
/* We're all OK */
}
else
{
/* Something barfed, show the opers */
ServerInstance->SNO->WriteToSnoMask('l', "CONNECT: Error connecting \002%s\002: %s.",MyLink.Name.c_str(),strerror(errno));
if (ServerInstance->SocketCull.find(newsocket) == ServerInstance->SocketCull.end())
ServerInstance->SocketCull[newsocket] = newsocket;
Utils->DoFailOver(&MyLink);
}
}
}
void ServernameResolver::OnError(ResolverError e, const std::string &errormessage)
{
/* Ooops! */
if (query == DNS_QUERY_AAAA)
{
bool cached;
ServernameResolver* snr = new ServernameResolver(mine, Utils, ServerInstance, host, MyLink, cached, DNS_QUERY_A);
ServerInstance->AddResolver(snr, cached);
return;
}
ServerInstance->SNO->WriteToSnoMask('l', "CONNECT: Error connecting \002%s\002: Unable to resolve hostname - %s", MyLink.Name.c_str(), errormessage.c_str() );
Utils->DoFailOver(&MyLink);
}
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