Merge pull request #1018 from SaberUK/insp20+hidekills

[user/henk/code/inspircd.git] / src / modules / m_connectban.cpp

diff --git a/src/modules/m_connectban.cpp b/src/modules/m_connectban.cpp
index ae464a16cc3430b17673aa4e13986d85088a4616..26120add984381529a736bcd3af0f8b67b4e0d61 100644 (file)
--- a/src/modules/m_connectban.cpp
+++ b/src/modules/m_connectban.cpp
@@ -1,20 +1,26 @@
-/*       +------------------------------------+
- *       | Inspire Internet Relay Chat Daemon |
- *       +------------------------------------+
+/*
+ * InspIRCd -- Internet Relay Chat Daemon
  *
- *  InspIRCd: (C) 2002-2009 InspIRCd Development Team
- * See: http://wiki.inspircd.org/Credits
+ *   Copyright (C) 2008 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/>.
  */
 
+
 #include "inspircd.h"
 #include "xline.h"
 
-/* $ModDesc: Throttles the connections of any users who try connect flood */
+/* $ModDesc: Throttles the connections of IP ranges who try to connect flood. */
 
 class ModuleConnectBan : public Module
 {
@@ -25,10 +31,10 @@ class ModuleConnectBan : public Module
        unsigned int ipv4_cidr;
        unsigned int ipv6_cidr;
  public:
-       ModuleConnectBan(InspIRCd* Me) : Module(Me)
+       void init()
        {
-               Implementation eventlist[] = { I_OnUserConnect, I_OnGarbageCollect, I_OnRehash };
-               ServerInstance->Modules->Attach(eventlist, this, 3);
+               Implementation eventlist[] = { I_OnSetUserIP, I_OnGarbageCollect, I_OnRehash };
+               ServerInstance->Modules->Attach(eventlist, this, sizeof(eventlist)/sizeof(Implementation));
                OnRehash(NULL);
        }
 
@@ -38,37 +44,35 @@ class ModuleConnectBan : public Module
 
        virtual Version GetVersion()
        {
-               return Version("$Id$", VF_VENDOR,API_VERSION);
+               return Version("Throttles the connections of IP ranges who try to connect flood.", VF_VENDOR);
        }
 
        virtual void OnRehash(User* user)
        {
-               ConfigReader Conf(ServerInstance);
-               std::string duration;
+               ConfigTag* tag = ServerInstance->Config->ConfValue("connectban");
 
-               ipv4_cidr = Conf.ReadInteger("connectban", "ipv4cidr", 0, true);
+               ipv4_cidr = tag->getInt("ipv4cidr", 32);
                if (ipv4_cidr == 0)
                        ipv4_cidr = 32;
 
-               ipv6_cidr = Conf.ReadInteger("connectban", "ipv6cidr", 0, true);
+               ipv6_cidr = tag->getInt("ipv6cidr", 128);
                if (ipv6_cidr == 0)
                        ipv6_cidr = 128;
 
-               threshold = Conf.ReadInteger("connectban", "threshold", 0, true);
-
+               threshold = tag->getInt("threshold", 10);
                if (threshold == 0)
                        threshold = 10;
 
-               duration = Conf.ReadValue("connectban", "duration", 0, true);
-
-               if (duration.empty())
-                       duration = "10m";
-
-               banduration = ServerInstance->Duration(duration);
+               banduration = ServerInstance->Duration(tag->getString("duration", "10m"));
+               if (banduration == 0)
+                       banduration = 10*60;
        }
 
-       virtual void OnUserConnect(User *u)
+       virtual void OnSetUserIP(LocalUser* u)
        {
+               if (u->exempt)
+                       return;
+
                int range = 32;
                clonemap::iterator i;
 
@@ -82,7 +86,8 @@ class ModuleConnectBan : public Module
                        break;
                }
 
-               i = connects.find(u->GetCIDRMask(range));
+               irc::sockets::cidr_mask mask(u->client_sa, range);
+               i = connects.find(mask);
 
                if (i != connects.end())
                {
@@ -91,19 +96,24 @@ class ModuleConnectBan : public Module
                        if (i->second >= threshold)
                        {
                                // Create zline for set duration.
-                               ZLine* zl = new ZLine(ServerInstance, ServerInstance->Time(), banduration, ServerInstance->Config->ServerName, "Connect flooding", u->GetCIDRMask(range));
-                               if (ServerInstance->XLines->AddLine(zl,NULL))
-                                       ServerInstance->XLines->ApplyLines();
-                               else
+                               ZLine* zl = new ZLine(ServerInstance->Time(), banduration, ServerInstance->Config->ServerName, "Your IP range has been attempting to connect too many times in too short a duration. Wait a while, and you will be able to connect.", mask.str());
+                               if (!ServerInstance->XLines->AddLine(zl, NULL))
+                               {
                                        delete zl;
-
-                               ServerInstance->SNO->WriteToSnoMask('x', "Connect flooding from IP range %s (%d)", u->GetCIDRMask(range), threshold);
+                                       return;
+                               }
+                               ServerInstance->XLines->ApplyLines();
+                               std::string maskstr = mask.str();
+                               std::string timestr = ServerInstance->TimeString(zl->expiry);
+                               ServerInstance->SNO->WriteGlobalSno('x',"Module m_connectban added Z:line on *@%s to expire on %s: Connect flooding",
+                                       maskstr.c_str(), timestr.c_str());
+                               ServerInstance->SNO->WriteGlobalSno('a', "Connect flooding from IP range %s (%d)", maskstr.c_str(), threshold);
                                connects.erase(i);
                        }
                }
                else
                {
-                       connects[u->GetCIDRMask(range)] = 1;
+                       connects[mask] = 1;
                }
        }