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  *       | Inspire Internet Relay Chat Daemon |
  *       +------------------------------------+
  *
- *  InspIRCd is copyright (C) 2002-2006 ChatSpike-Dev.
- *                       E-mail:
- *                <brain@chatspike.net>
- *               <Craig@chatspike.net>
- *     
- * Written by Craig Edwards, Craig McLure, and others.
+ *  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.
  *
  * ---------------------------------------------------
  */
 
-using namespace std;
-
-#include <stdio.h>
-#include "users.h"
-#include "channels.h"
-#include "modules.h"
-#include "helperfuncs.h"
+#include "inspircd.h"
+#include "m_override.h"
 
 /* $ModDesc: Provides support for unreal-style oper-override */
 
+typedef std::map<std::string,std::string> override_t;
+
 class ModuleOverride : public Module
 {
-       Server *Srv;
+       override_t overrides;
+       bool RequireKey;
        bool NoisyOverride;
-       ConfigReader *Conf;
-       
+       bool OverriddenMode;
+       bool OverOther;
+       int OverOps, OverDeops, OverVoices, OverDevoices, OverHalfops, OverDehalfops;
+
  public:
-       ModuleOverride(Server* Me)
-               : Module::Module(Me)
+
+       ModuleOverride(InspIRCd* Me)
+               : Module(Me)
        {
-       
-               // here we initialise our module. Use new to create new instances of the required
-               // classes.
-               
-               Srv = Me;
-               Conf = new ConfigReader;
-               
                // read our config options (main config file)
-               NoisyOverride = Conf->ReadFlag("override","noisy",0);
+               OnRehash(NULL,"");
+               ServerInstance->SNO->EnableSnomask('G', "GODMODE");
+               if (!ServerInstance->Modules->PublishFeature("Override", this))
+               {
+                       throw ModuleException("m_override: Unable to publish feature 'Override'");
+               }
+               OverriddenMode = OverOther = false;
+               OverOps = OverDeops = OverVoices = OverDevoices = OverHalfops = OverDehalfops = 0;
+               Implementation eventlist[] = { I_OnRehash, I_OnAccessCheck, I_On005Numeric, I_OnUserPreJoin, I_OnUserPreKick, I_OnPostCommand, I_OnLocalTopicChange, I_OnRequest };
+               ServerInstance->Modules->Attach(eventlist, this, 8);
        }
-       
-       virtual void OnRehash(std::string parameter)
+
+       virtual void OnRehash(User* user, const std::string &parameter)
        {
                // on a rehash we delete our classes for good measure and create them again.
-               delete Conf;
-               Conf = new ConfigReader;
+               ConfigReader* Conf = new ConfigReader(ServerInstance);
+
                // re-read our config options on a rehash
-               NoisyOverride = Conf->ReadFlag("override","noisy",0);
+               NoisyOverride = Conf->ReadFlag("override", "noisy", 0);
+               RequireKey = Conf->ReadFlag("override", "requirekey", 0);
+
+               overrides.clear();
+
+               for (int j =0; j < Conf->Enumerate("type"); j++)
+               {
+                       std::string typen = Conf->ReadValue("type","name",j);
+                       std::string tokenlist = Conf->ReadValue("type","override",j);
+                       overrides[typen] = tokenlist;
+               }
+
+               delete Conf;
        }
 
-       void Implements(char* List)
+
+       virtual void OnPostCommand(const std::string &command, const std::vector<std::string> &parameters, User *user, CmdResult result, const std::string &original_line)
        {
-               List[I_OnRehash] = List[I_OnAccessCheck] = List[I_On005Numeric] = List[I_OnUserPreJoin] = 1;
+               if (OverriddenMode)
+               {
+                       if ((irc::string(command.c_str()) == "MODE") && (result == CMD_SUCCESS) && !ServerInstance->Modes->GetLastParse().empty())
+                       {
+                               std::string msg = std::string(user->nick)+" Overriding modes: "+ServerInstance->Modes->GetLastParse()+" [Detail: ";
+                               if (OverOps)
+                                       msg += ConvToStr(OverOps)+" op"+(OverOps != 1 ? "s" : "")+", ";
+                               if (OverDeops)
+                                       msg += ConvToStr(OverDeops)+" deop"+(OverDeops != 1 ? "s" : "")+", ";
+                               if (OverVoices)
+                                       msg += ConvToStr(OverVoices)+" voice"+(OverVoices != 1 ? "s" : "")+", ";
+                               if (OverDevoices)
+                                       msg += ConvToStr(OverDevoices)+" devoice"+(OverDevoices != 1 ? "s" : "")+", ";
+                               if (OverHalfops)
+                                       msg += ConvToStr(OverHalfops)+" halfop"+(OverHalfops != 1 ? "s" : "")+", ";
+                               if (OverDehalfops)
+                                       msg += ConvToStr(OverDehalfops)+" dehalfop"+(OverDehalfops != 1 ? "s" : "")+", ";
+                               if (OverOther)
+                                       msg += "others, ";
+                               msg.replace(msg.length()-2, 2, 1, ']');
+                               ServerInstance->SNO->WriteToSnoMask('G',msg);
+                       }
+
+                       OverriddenMode = OverOther = false;
+                       OverOps = OverDeops = OverVoices = OverDevoices = OverHalfops = OverDehalfops = 0;
+               }
        }
 
-        virtual void On005Numeric(std::string &output)
-        {
-               output = output + std::string(" OVERRIDE");
-        }
+       virtual void On005Numeric(std::string &output)
+       {
+               output.append(" OVERRIDE");
+       }
 
-       virtual bool CanOverride(userrec* source, char* token)
+       virtual bool CanOverride(User* source, const char* token)
        {
                // checks to see if the oper's type has <type:override>
-               for (int j =0; j < Conf->Enumerate("type"); j++)
-                {
-                       std::string typen = Conf->ReadValue("type","name",j);
-                       if (!strcmp(typen.c_str(),source->oper))
-                       {
-                               // its defined, return its value as a boolean for if the token is set
-                               std::string tokenlist = Conf->ReadValue("type","override",j);
-                               return strstr(tokenlist.c_str(),token);
-                        }
-                }
+               override_t::iterator j = overrides.find(source->oper);
+
+               if (j != overrides.end())
+               {
+                       // its defined or * is set, return its value as a boolean for if the token is set
+                       return ((j->second.find(token, 0) != std::string::npos) || (j->second.find("*", 0) != std::string::npos));
+               }
+
                // its not defined at all, count as false
                return false;
        }
-       
-       virtual int OnAccessCheck(userrec* source,userrec* dest,chanrec* channel,int access_type)
+
+
+       virtual int OnLocalTopicChange(User *source, Channel *channel, const std::string &topic)
        {
-               if (strchr(source->modes,'o'))
+               if (IS_OPER(source) && CanOverride(source, "TOPIC"))
                {
-                       if ((Srv) && (source) && (channel))
+                       if (!channel->HasUser(source) || (channel->IsModeSet('t') && channel->GetStatus(source) < STATUS_HOP))
                        {
-                               // Fix by brain - allow the change if they arent on channel - rely on boolean short-circuit
-                               // to not check the other items in the statement if they arent on the channel
-                               if ((!Srv->IsOnChannel(source,channel)) || ((Srv->ChanMode(source,channel) != "%") && (Srv->ChanMode(source,channel) != "@")))
-                               {
-                                       switch (access_type)
-                                       {
-                                               case AC_KICK:
-                                                       if (CanOverride(source,"KICK"))
-                                                       {
-                                                               Srv->SendOpers("*** NOTICE: "+std::string(source->nick)+" Override-Kicked "+std::string(dest->nick)+" on "+std::string(channel->name));
-                                                               return ACR_ALLOW;
-                                                       }
-                                                       else return ACR_DEFAULT;
-                                               break;
-                                               case AC_DEOP:
-                                                       if (CanOverride(source,"MODEDEOP"))
-                                                       {
-                                                               Srv->SendOpers("*** NOTICE: "+std::string(source->nick)+" Override-Deopped "+std::string(dest->nick)+" on "+std::string(channel->name));
-                                                                return ACR_ALLOW;
-                                                       }
-                                                        else return ACR_DEFAULT;
-                                               break;
-                                               case AC_OP:
-                                                       if (CanOverride(source,"MODEOP"))
-                                                       {
-                                                               Srv->SendOpers("*** NOTICE: "+std::string(source->nick)+" Override-Opped "+std::string(dest->nick)+" on "+std::string(channel->name));
-                                                                return ACR_ALLOW;
-                                                       }
-                                                        else return ACR_DEFAULT;
-                                               break;
-                                               case AC_VOICE:
-                                                       if (CanOverride(source,"MODEVOICE"))
-                                                       {
-                                                               Srv->SendOpers("*** NOTICE: "+std::string(source->nick)+" Override-Voiced "+std::string(dest->nick)+" on "+std::string(channel->name));
-                                                                return ACR_ALLOW;
-                                                       }
-                                                        else return ACR_DEFAULT;
-                                               break;
-                                               case AC_DEVOICE:
-                                                       if (CanOverride(source,"MODEDEVOICE"))
-                                                       {
-                                                               Srv->SendOpers("*** NOTICE: "+std::string(source->nick)+" Override-Devoiced "+std::string(dest->nick)+" on "+std::string(channel->name));
-                                                                return ACR_ALLOW;
-                                                       }
-                                                        else return ACR_DEFAULT;
-                                               break;
-                                               case AC_HALFOP:
-                                                       if (CanOverride(source,"MODEHALFOP"))
-                                                       {
-                                                               Srv->SendOpers("*** NOTICE: "+std::string(source->nick)+" Override-Halfopped "+std::string(dest->nick)+" on "+std::string(channel->name));
-                                                                return ACR_ALLOW;
-                                                       }
-                                                        else return ACR_DEFAULT;
-                                               break;
-                                               case AC_DEHALFOP:
-                                                       if (CanOverride(source,"MODEDEHALFOP"))
-                                                       {
-                                                               Srv->SendOpers("*** NOTICE: "+std::string(source->nick)+" Override-Dehalfopped "+std::string(dest->nick)+" on "+std::string(channel->name));
-                                                                return ACR_ALLOW;
-                                                       }
-                                                        else return ACR_DEFAULT;
-                                               break;
-                                       }
-                               }
+                               ServerInstance->SNO->WriteToSnoMask('G',std::string(source->nick)+" used oper override to change a topic on "+std::string(channel->name));
                        }
-                       if (CanOverride(source,"OTHERMODE"))
+
+                       // Explicit allow
+                       return -1;
+               }
+
+               return 0;
+       }
+
+       virtual int OnUserPreKick(User* source, User* user, Channel* chan, const std::string &reason)
+       {
+               if (IS_OPER(source) && CanOverride(source,"KICK"))
+               {
+                       // If the kicker's status is less than the target's,                    or      the kicker's status is less than or equal to voice
+                       if ((chan->GetStatus(source) < chan->GetStatus(user))                   || (chan->GetStatus(source) <= STATUS_VOICE))
                        {
-                               return ACR_ALLOW;
+                               ServerInstance->SNO->WriteToSnoMask('G',std::string(source->nick)+" used oper override to kick "+std::string(user->nick)+" on "+std::string(chan->name)+" ("+reason+")");
                        }
-                       else
+                       /* Returning -1 explicitly allows the kick */
+                       return -1;
+               }
+               return 0;
+       }
+
+       virtual int OnAccessCheck(User* source,User* dest,Channel* channel,int access_type)
+       {
+               if (!IS_OPER(source))
+                       return ACR_DEFAULT;
+               if (!source || !channel)
+                       return ACR_DEFAULT;
+
+               int mode = STATUS_NORMAL;
+               if (channel->HasUser(source))
+                       mode = channel->GetStatus(source);
+               bool over_this = false;
+
+               switch (access_type)
+               {
+                       case AC_DEOP:
+                               if (mode < STATUS_OP && CanOverride(source,"MODEDEOP"))
+                               {
+                                       over_this = true;
+                                       OverDeops++;
+                               }
+                       break;
+                       case AC_OP:
+                               if (mode < STATUS_OP && CanOverride(source,"MODEOP"))
+                               {
+                                       over_this = true;
+                                       OverOps++;
+                               }
+                       break;
+                       case AC_VOICE:
+                               if (mode < STATUS_HOP && CanOverride(source,"MODEVOICE"))
+                               {
+                                       over_this = true;
+                                       OverVoices++;
+                               }
+                       break;
+                       case AC_DEVOICE:
+                               if (mode < STATUS_HOP && CanOverride(source,"MODEDEVOICE"))
+                               {
+                                       over_this = true;
+                                       OverDevoices++;
+                               }
+                       break;
+                       case AC_HALFOP:
+                               if (mode < STATUS_OP && CanOverride(source,"MODEHALFOP"))
+                               {
+                                       over_this = true;
+                                       OverHalfops++;
+                               }
+                       break;
+                       case AC_DEHALFOP:
+                               if (mode < STATUS_OP && CanOverride(source,"MODEDEHALFOP"))
+                               {
+                                       over_this = true;
+                                       OverDehalfops++;
+                               }
+                       break;
+                       case AC_GENERAL_MODE:
                        {
-                               return ACR_DEFAULT;
+                               std::string modes = ServerInstance->Modes->GetLastParse();
+                               bool ohv_only = (modes.find_first_not_of("+-ohv") == std::string::npos);
+
+                               if (mode < STATUS_HOP && (ohv_only || CanOverride(source,"OTHERMODE")))
+                               {
+                                       over_this = true;
+                                       if (!ohv_only)
+                                               OverOther = true;
+                               }
                        }
+                       break;
                }
 
-               return ACR_DEFAULT;
+               if (over_this)
+               {
+                       OverriddenMode = true;
+                       return ACR_ALLOW;
+               }
+               else
+               {
+                       return ACR_DEFAULT;
+               }
        }
-       
-       virtual int OnUserPreJoin(userrec* user, chanrec* chan, const char* cname)
+
+       virtual int OnUserPreJoin(User* user, Channel* chan, const char* cname, std::string &privs, const std::string &keygiven)
        {
-               if (strchr(user->modes,'o'))
+               if (IS_LOCAL(user) && IS_OPER(user))
                {
                        if (chan)
                        {
-                               if ((chan->binarymodes & CM_INVITEONLY) && (CanOverride(user,"INVITE")))
+                               if ((chan->modes[CM_INVITEONLY]) && (CanOverride(user,"INVITE")))
                                {
-                                       if (NoisyOverride)
+                                       irc::string x(chan->name.c_str());
+                                       if (!user->IsInvited(x))
                                        {
-                                               irc::string x = chan->name;
-                                               if (!user->IsInvited(x))
+                                               if (RequireKey && keygiven != "override")
                                                {
-                                                       WriteChannelWithServ((char*)Srv->GetServerName().c_str(),chan,"NOTICE %s :%s invited himself into the channel",cname,user->nick);
+                                                       // Can't join normally -- must use a special key to bypass restrictions
+                                                       user->WriteServ("NOTICE %s :*** You may not join normally. You must join with a key of 'override' to oper override.", user->nick.c_str());
+                                                       return 1;
                                                }
+
+                                               if (NoisyOverride)
+                                                       chan->WriteChannelWithServ(ServerInstance->Config->ServerName, "NOTICE %s :%s used oper override to bypass invite-only", cname, user->nick.c_str());
+                                               ServerInstance->SNO->WriteToSnoMask('G', user->nick+" used oper override to bypass +i on "+std::string(cname));
                                        }
-                                       Srv->SendOpers("*** "+std::string(user->nick)+" used operoverride to bypass +i on "+std::string(cname));
                                        return -1;
                                }
-                                if ((chan->key[0]) && (CanOverride(user,"KEY")))
-                                {
-                                        if (NoisyOverride)
-                                                WriteChannelWithServ((char*)Srv->GetServerName().c_str(),chan,"NOTICE %s :%s bypassed the channel key",cname,user->nick);
-                                        Srv->SendOpers("*** "+std::string(user->nick)+" used operoverride to bypass +k on "+std::string(cname));
+
+                               if ((chan->modes[CM_KEY]) && (CanOverride(user,"KEY")) && keygiven != chan->GetModeParameter('k'))
+                               {
+                                       if (RequireKey && keygiven != "override")
+                                       {
+                                               // Can't join normally -- must use a special key to bypass restrictions
+                                               user->WriteServ("NOTICE %s :*** You may not join normally. You must join with a key of 'override' to oper override.", user->nick.c_str());
+                                               return 1;
+                                       }
+
+                                       if (NoisyOverride)
+                                               chan->WriteChannelWithServ(ServerInstance->Config->ServerName, "NOTICE %s :%s used oper override to bypass the channel key", cname, user->nick.c_str());
+                                       ServerInstance->SNO->WriteToSnoMask('G', user->nick+" used oper override to bypass +k on "+std::string(cname));
                                        return -1;
-                                }
-                                if ((chan->limit >= Srv->CountUsers(chan)) && (CanOverride(user,"LIMIT")))
-                                {
-                                        if (NoisyOverride)
-                                                WriteChannelWithServ((char*)Srv->GetServerName().c_str(),chan,"NOTICE %s :%s passed through your channel limit",cname,user->nick);
-                                        Srv->SendOpers("*** "+std::string(user->nick)+" used operoverride to bypass +l on "+std::string(cname));
+                               }
+
+                               if ((chan->modes[CM_LIMIT]) && (chan->GetUserCounter() >= atoi(chan->GetModeParameter('l').c_str())) && (CanOverride(user,"LIMIT")))
+                               {
+                                       if (RequireKey && keygiven != "override")
+                                       {
+                                               // Can't join normally -- must use a special key to bypass restrictions
+                                               user->WriteServ("NOTICE %s :*** You may not join normally. You must join with a key of 'override' to oper override.", user->nick.c_str());
+                                               return 1;
+                                       }
+
+                                       if (NoisyOverride)
+                                               chan->WriteChannelWithServ(ServerInstance->Config->ServerName, "NOTICE %s :%s used oper override to bypass the channel limit", cname, user->nick.c_str());
+                                       ServerInstance->SNO->WriteToSnoMask('G', user->nick+" used oper override to bypass +l on "+std::string(cname));
                                        return -1;
-                                }
+                               }
 
-                               if (CanOverride(user,"BANWALK"))
+                               if (chan->IsBanned(user) && CanOverride(user,"BANWALK"))
                                {
-                                       // other join
-                                       return -1;
+                                       if (RequireKey && keygiven != "override")
+                                       {
+                                               // Can't join normally -- must use a special key to bypass restrictions
+                                               user->WriteServ("NOTICE %s :*** You may not join normally. You must join with a key of 'override' to oper override.", user->nick.c_str());
+                                               return 1;
+                                       }
+
+                                       if (NoisyOverride)
+                                               chan->WriteChannelWithServ(ServerInstance->Config->ServerName, "NOTICE %s :%s used oper override to bypass channel ban", cname, user->nick.c_str());
+                                       ServerInstance->SNO->WriteToSnoMask('G',"%s used oper override to bypass channel ban on %s", user->nick.c_str(), cname);
+                                       return -1;
                                }
                        }
                }
                return 0;
        }
-       
-       virtual ~ModuleOverride()
-       {
-               delete Conf;
-       }
-       
-       virtual Version GetVersion()
-       {
-               return Version(1,0,0,1,VF_VENDOR);
-       }
-};
 
-
-class ModuleOverrideFactory : public ModuleFactory
-{
- public:
-       ModuleOverrideFactory()
+       virtual const char* OnRequest(Request* request)
        {
+               if(strcmp(OVRREQID, request->GetId()) == 0)
+               {
+                       OVRrequest* req = static_cast<OVRrequest*>(request);
+                       return this->CanOverride(req->requser,req->reqtoken.c_str()) ? "yes":"";
+               }
+               return NULL;
        }
-       
-       ~ModuleOverrideFactory()
+
+       virtual ~ModuleOverride()
        {
+               ServerInstance->Modules->UnpublishFeature("Override");
+               ServerInstance->SNO->DisableSnomask('G');
        }
-       
-       virtual Module * CreateModule(Server* Me)
+
+       virtual Version GetVersion()
        {
-               return new ModuleOverride(Me);
+               return Version("$Id$",VF_VENDOR,API_VERSION);
        }
-       
 };
 
-
-extern "C" void * init_module( void )
-{
-       return new ModuleOverrideFactory;
-}
-
+MODULE_INIT(ModuleOverride)