From 2116de82e08d08a661fd3203183132410cc19d0b Mon Sep 17 00:00:00 2001
From: w00t <w00t@e03df62e-2008-0410-955e-edbf42e46eb7>
Date: Mon, 15 Oct 2007 21:32:41 +0000
Subject: Split user resolver into its own file.

git-svn-id: http://svn.inspircd.org/repository/trunk/inspircd@8209 e03df62e-2008-0410-955e-edbf42e46eb7
---
 src/user_resolver.cpp | 118 ++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 118 insertions(+)
 create mode 100644 src/user_resolver.cpp

(limited to 'src/user_resolver.cpp')

diff --git a/src/user_resolver.cpp b/src/user_resolver.cpp
new file mode 100644
index 000000000..adae765eb
--- /dev/null
+++ b/src/user_resolver.cpp
@@ -0,0 +1,118 @@
+/*       +------------------------------------+
+ *       | Inspire Internet Relay Chat Daemon |
+ *       +------------------------------------+
+ *
+ *  InspIRCd: (C) 2002-2007 InspIRCd Development Team
+ * See: http://www.inspircd.org/wiki/index.php/Credits
+ *
+ * This program is free but copyrighted software; see
+ *            the file COPYING for details.
+ *
+ * ---------------------------------------------------
+ */
+
+#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)
+{
+	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)
+{
+	/* We are only interested in the first matching result */
+	if (resultnum)
+		return;
+
+	if ((!this->fwd) && (ServerInstance->SE->GetRef(this->bound_fd) == this->bound_user))
+	{
+		this->bound_user->stored_host = result;
+		try
+		{
+			/* Check we didnt time out */
+			if (this->bound_user->registered != REG_ALL)
+			{
+				bool cached;
+#ifdef IPV6
+				if (this->bound_user->GetProtocolFamily() == 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), cached);
+				}
+				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, cached);
+				this->ServerInstance->AddResolver(bound_user->res_forward, cached);
+			}
+		}
+		catch (CoreException& e)
+		{
+			ServerInstance->Log(DEBUG,"Error in resolver: %s",e.GetReason());
+		}
+	}
+	else if ((this->fwd) && (ServerInstance->SE->GetRef(this->bound_fd) == this->bound_user))
+	{
+		/* Both lookups completed */
+		std::string result2("0::ffff:");
+		result2.append(result);
+		if (this->bound_user->GetIPString() == result || this->bound_user->GetIPString() == result2)
+		{
+			std::string hostname = this->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))
+				{
+					/* Hostnames starting with : are not a good thing (tm) */
+					if (*(hostname.c_str()) == ':')
+						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;
+					strlcpy(this->bound_user->dhost, hostname.c_str(),64);
+					strlcpy(this->bound_user->host, hostname.c_str(),64);
+					/* Invalidate cache */
+					this->bound_user->InvalidateCache();
+				}
+			}
+			else
+			{
+				if (!this->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;
+				}
+			}
+		}
+		else
+		{
+			if (!this->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;
+			}
+		}
+	}
+}
+
+void UserResolver::OnError(ResolverError e, const std::string &errormessage)
+{
+	if (ServerInstance->SE->GetRef(this->bound_fd) == this->bound_user)
+	{
+		/* Since dns timeout is implemented outside of the resolver, this was a race condition that could result in this message being sent *after*
+		 * the user was fully connected. This check fixes that issue  - Special */
+		if (!this->bound_user->dns_done)
+		{
+			/* Error message here */
+			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;
+		}
+	}
+}
+
+
-- 
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