-/* +------------------------------------+
- * | Inspire Internet Relay Chat Daemon |
- * +------------------------------------+
+/*
+ * InspIRCd -- Internet Relay Chat Daemon
*
- * InspIRCd: (C) 2002-2008 InspIRCd Development Team
- * See: http://www.inspircd.org/wiki/index.php/Credits
+ * Copyright (C) 2009-2010 Daniel De Graaf <danieldg@inspircd.org>
+ * Copyright (C) 2007 Robin Burchell <robin+git@viroteck.net>
*
- * This program is free but copyrighted software; see
- * the file COPYING for details.
+ * This file is part of InspIRCd. InspIRCd 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.
*
- * ---------------------------------------------------
+ * This program 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. See the GNU General Public License for more
+ * details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
-/* $Core: libIRCDuserresolver */
#include "inspircd.h"
-
-UserResolver::UserResolver(InspIRCd* Instance, User* user, std::string to_resolve, QueryType qt, bool &cache) :
- Resolver(Instance, to_resolve, qt, cache), bound_user(user)
+UserResolver::UserResolver(LocalUser* user, std::string to_resolve, QueryType qt, bool &cache) :
+ Resolver(to_resolve, qt, cache, NULL), uuid(user->uuid)
{
this->fwd = (qt == DNS_QUERY_A || qt == DNS_QUERY_AAAA);
- this->bound_fd = user->GetFd();
}
-void UserResolver::OnLookupComplete(const std::string &result, unsigned int ttl, bool cached, int resultnum)
+void UserResolver::OnLookupComplete(const std::string &result, unsigned int ttl, bool cached)
{
- /* We are only interested in the first matching result */
- if (resultnum)
+ UserResolver *res_forward; // for forward-resolution
+ LocalUser* bound_user = (LocalUser*)ServerInstance->FindUUID(uuid);
+ if (!bound_user)
+ {
+ ServerInstance->Logs->Log("RESOLVER", LOG_DEBUG, "Resolution finished for user '%s' who is gone", uuid.c_str());
return;
+ }
+
+ ServerInstance->Logs->Log("RESOLVER", LOG_DEBUG, "DNS result for %s: '%s' -> '%s'", uuid.c_str(), input.c_str(), result.c_str());
- if ((!this->fwd) && (ServerInstance->SE->GetRef(this->bound_fd) == this->bound_user))
+ if (!fwd)
{
- this->bound_user->stored_host = result;
+ // first half of resolution is done. We now need to verify that the host matches.
+ bound_user->stored_host = result;
try
{
/* Check we didnt time out */
- if (this->bound_user->registered != REG_ALL)
+ if (bound_user->registered != REG_ALL)
{
- bool lcached;
-#ifdef IPV6
- if (this->bound_user->GetProtocolFamily() == AF_INET6)
+ bool lcached = false;
+ if (bound_user->client_sa.sa.sa_family == AF_INET6)
{
- /* IPV6 forward lookup (with possibility of 4in6) */
- const char* ip = this->bound_user->GetIPString();
- bound_user->res_forward = new UserResolver(this->ServerInstance, this->bound_user, result, (!strncmp(ip, "0::ffff:", 8) ? DNS_QUERY_A : DNS_QUERY_AAAA), lcached);
+ /* IPV6 forward lookup */
+ res_forward = new UserResolver(bound_user, result, DNS_QUERY_AAAA, lcached);
}
else
- /* IPV4 lookup (mixed protocol mode) */
-#endif
- /* IPV4 lookup (ipv4 only mode) */
- bound_user->res_forward = new UserResolver(this->ServerInstance, this->bound_user, result, DNS_QUERY_A, lcached);
- this->ServerInstance->AddResolver(bound_user->res_forward, lcached);
+ {
+ /* IPV4 lookup */
+ res_forward = new UserResolver(bound_user, result, DNS_QUERY_A, lcached);
+ }
+ ServerInstance->AddResolver(res_forward, lcached);
}
}
catch (CoreException& e)
{
- ServerInstance->Logs->Log("RESOLVER", DEBUG,"Error in resolver: %s",e.GetReason());
+ ServerInstance->Logs->Log("RESOLVER", LOG_DEBUG,"Error in resolver: %s",e.GetReason());
}
}
- else if ((this->fwd) && (ServerInstance->SE->GetRef(this->bound_fd) == this->bound_user))
+ else
{
/* Both lookups completed */
- std::string result2("0::ffff:");
- result2.append(result);
- if (this->bound_user->GetIPString() == result || this->bound_user->GetIPString() == result2)
+
+ irc::sockets::sockaddrs* user_ip = &bound_user->client_sa;
+ bool rev_match = false;
+ if (user_ip->sa.sa_family == AF_INET6)
{
- std::string hostname = this->bound_user->stored_host;
+ struct in6_addr res_bin;
+ if (inet_pton(AF_INET6, result.c_str(), &res_bin))
+ {
+ rev_match = !memcmp(&user_ip->in6.sin6_addr, &res_bin, sizeof(res_bin));
+ }
+ }
+ else
+ {
+ struct in_addr res_bin;
+ if (inet_pton(AF_INET, result.c_str(), &res_bin))
+ {
+ rev_match = !memcmp(&user_ip->in4.sin_addr, &res_bin, sizeof(res_bin));
+ }
+ }
+
+ if (rev_match)
+ {
+ std::string hostname = bound_user->stored_host;
if (hostname.length() < 65)
{
/* Check we didnt time out */
- if ((this->bound_user->registered != REG_ALL) && (!this->bound_user->dns_done))
+ if ((bound_user->registered != REG_ALL) && (!bound_user->dns_done))
{
/* Hostnames starting with : are not a good thing (tm) */
- if (*(hostname.c_str()) == ':')
+ if (hostname[0] == ':')
hostname.insert(0, "0");
- this->bound_user->WriteServ("NOTICE Auth :*** Found your hostname (%s)%s", hostname.c_str(), (cached ? " -- cached" : ""));
- this->bound_user->dns_done = true;
- this->bound_user->dhost.assign(hostname, 0, 64);
- strlcpy(this->bound_user->host, hostname.c_str(),64);
+ bound_user->WriteServ("NOTICE Auth :*** Found your hostname (%s)%s", hostname.c_str(), (cached ? " -- cached" : ""));
+ bound_user->dns_done = true;
+ bound_user->dhost.assign(hostname, 0, 64);
+ bound_user->host.assign(hostname, 0, 64);
/* Invalidate cache */
- this->bound_user->InvalidateCache();
+ bound_user->InvalidateCache();
}
}
else
{
- if (!this->bound_user->dns_done)
+ if (!bound_user->dns_done)
{
- this->bound_user->WriteServ("NOTICE Auth :*** Your hostname is longer than the maximum of 64 characters, using your IP address (%s) instead.", this->bound_user->GetIPString());
- this->bound_user->dns_done = true;
+ bound_user->WriteServ("NOTICE Auth :*** Your hostname is longer than the maximum of 64 characters, using your IP address (%s) instead.", bound_user->GetIPString().c_str());
+ bound_user->dns_done = true;
}
}
}
else
{
- if (!this->bound_user->dns_done)
+ if (!bound_user->dns_done)
{
- this->bound_user->WriteServ("NOTICE Auth :*** Your hostname does not match up with your IP address. Sorry, using your IP address (%s) instead.", this->bound_user->GetIPString());
- this->bound_user->dns_done = true;
+ bound_user->WriteServ("NOTICE Auth :*** Your hostname does not match up with your IP address. Sorry, using your IP address (%s) instead.", bound_user->GetIPString().c_str());
+ bound_user->dns_done = true;
}
}
+
+ // Save some memory by freeing this up; it's never used again in the user's lifetime.
+ bound_user->stored_host.resize(0);
}
}
void UserResolver::OnError(ResolverError e, const std::string &errormessage)
{
- if (ServerInstance->SE->GetRef(this->bound_fd) == this->bound_user)
+ LocalUser* bound_user = (LocalUser*)ServerInstance->FindUUID(uuid);
+ if (bound_user)
{
- this->bound_user->WriteServ("NOTICE Auth :*** Could not resolve your hostname: %s; using your IP address (%s) instead.", errormessage.c_str(), this->bound_user->GetIPString());
- this->bound_user->dns_done = true;
+ bound_user->WriteServ("NOTICE Auth :*** Could not resolve your hostname: %s; using your IP address (%s) instead.", errormessage.c_str(), bound_user->GetIPString().c_str());
+ bound_user->dns_done = true;
+ bound_user->stored_host.resize(0);
ServerInstance->stats->statsDnsBad++;
}
}
-
-