]> git.netwichtig.de Git - user/henk/code/inspircd.git/blobdiff - src/modules/m_override.cpp
Add interface to SSL modules that allows other modules to obtain the raw SSL session...
[user/henk/code/inspircd.git] / src / modules / m_override.cpp
index 15cf2ae55ed2266a349275a933c5cfbaeceef65f..3e42c4f7927885f023bc9b5bf05775b21f8a28a8 100644 (file)
-/*       +------------------------------------+
- *       | 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) 2009 Uli Schlachter <psychon@znc.in>
+ *   Copyright (C) 2007-2009 Robin Burchell <robin+git@viroteck.net>
+ *   Copyright (C) 2007-2008 Dennis Friis <peavey@inspircd.org>
+ *   Copyright (C) 2008 Pippijn van Steenhoven <pip88nl@gmail.com>
+ *   Copyright (C) 2008 Geoff Bricker <geoff.bricker@gmail.com>
+ *   Copyright (C) 2004-2006 Craig Edwards <craigedwards@brainbox.cc>
+ *   Copyright (C) 2006 Oliver Lupton <oliverlupton@gmail.com>
  *
- * 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 "wildcard.h"
 
-/* $ModDesc: Provides support for unreal-style oper-override */
+#include "inspircd.h"
 
-typedef std::map<std::string,std::string> override_t;
+/* $ModDesc: Provides support for allowing opers to override certain things. */
 
 class ModuleOverride : public Module
 {
-
-       override_t overrides;
        bool RequireKey;
        bool NoisyOverride;
-       bool OverriddenMode;
-       int OverOps, OverDeops, OverVoices, OverDevoices, OverHalfops, OverDehalfops;
+
+       static bool IsOverride(unsigned int userlevel, const std::string& modeline)
+       {
+               for (std::string::const_iterator i = modeline.begin(); i != modeline.end(); ++i)
+               {
+                       ModeHandler* mh = ServerInstance->Modes->FindMode(*i, MODETYPE_CHANNEL);
+                       if (!mh)
+                               continue;
+
+                       if (mh->GetLevelRequired() > userlevel)
+                               return true;
+               }
+               return false;
+       }
 
  public:
 
-       ModuleOverride(InspIRCd* Me)
-               : Module(Me)
+       void init()
        {
                // read our config options (main config file)
-               OnRehash(NULL,"");
-               ServerInstance->SNO->EnableSnomask('O', "OVERRIDE");
-               OverriddenMode = false;
-               OverOps = OverDeops = OverVoices = OverDevoices = OverHalfops = OverDehalfops = 0;
-               Implementation eventlist[] = { I_OnRehash, I_OnAccessCheck, I_On005Numeric, I_OnUserPreJoin, I_OnUserPreKick, I_OnPostCommand };
-               ServerInstance->Modules->Attach(eventlist, this, 6);
+               OnRehash(NULL);
+               ServerInstance->SNO->EnableSnomask('v', "OVERRIDE");
+               Implementation eventlist[] = { I_OnRehash, I_OnPreMode, I_On005Numeric, I_OnUserPreJoin, I_OnUserPreKick, I_OnPreTopicChange };
+               ServerInstance->Modules->Attach(eventlist, this, sizeof(eventlist)/sizeof(Implementation));
        }
 
-       virtual void OnRehash(User* user, const std::string &parameter)
+       void OnRehash(User* user)
        {
-               // on a rehash we delete our classes for good measure and create them again.
-               ConfigReader* Conf = new ConfigReader(ServerInstance);
-
                // re-read our config options on a rehash
-               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;
+               ConfigTag* tag = ServerInstance->Config->ConfValue("override");
+               NoisyOverride = tag->getBool("noisy");
+               RequireKey = tag->getBool("requirekey");
        }
 
-
-       virtual void OnPostCommand(const std::string &command, const std::vector<std::string> &parameters, User *user, CmdResult result, const std::string &original_line)
+       void On005Numeric(std::string &output)
        {
-               if ((NoisyOverride) && (OverriddenMode) && (irc::string(command.c_str()) == "MODE") && (result == CMD_SUCCESS))
-               {
-                       int Total = OverOps + OverDeops + OverVoices + OverDevoices + OverHalfops + OverDehalfops;
-
-                       ServerInstance->SNO->WriteToSnoMask('O',std::string(user->nick)+" Overriding modes: "+ServerInstance->Modes->GetLastParse()+" "+(Total ? "[Detail: " : "")+
-                                       (OverOps ? ConvToStr(OverOps)+" op"+(OverOps != 1 ? "s" : "")+" " : "")+
-                                       (OverDeops ? ConvToStr(OverDeops)+" deop"+(OverDeops != 1 ? "s" : "")+" " : "")+
-                                       (OverVoices ? ConvToStr(OverVoices)+" voice"+(OverVoices != 1 ? "s" : "")+" " : "")+
-                                       (OverDevoices ? ConvToStr(OverDevoices)+" devoice"+(OverDevoices != 1 ? "s" : "")+" " : "")+
-                                       (OverHalfops ? ConvToStr(OverHalfops)+" halfop"+(OverHalfops != 1 ? "s" : "")+" " : "")+
-                                       (OverDehalfops ? ConvToStr(OverDehalfops)+" dehalfop"+(OverDehalfops != 1 ? "s" : "") : "")
-                                       +(Total ? "]" : ""));
-
-                       OverriddenMode = false;
-                       OverOps = OverDeops = OverVoices = OverDevoices = OverHalfops = OverDehalfops = 0;
-               }
+               output.append(" OVERRIDE");
        }
 
-       virtual void On005Numeric(std::string &output)
+       bool CanOverride(User* source, const char* token)
        {
-               output.append(" OVERRIDE");
+               std::string tokenlist = source->oper->getConfig("override");
+
+               // its defined or * is set, return its value as a boolean for if the token is set
+               return ((tokenlist.find(token, 0) != std::string::npos) || (tokenlist.find("*", 0) != std::string::npos));
        }
 
-       virtual bool CanOverride(User* source, const char* token)
-       {
-               // checks to see if the oper's type has <type:override>
-               override_t::iterator j = overrides.find(source->oper);
 
-               if (j != overrides.end())
+       ModResult OnPreTopicChange(User *source, Channel *channel, const std::string &topic)
+       {
+               if (IS_LOCAL(source) && IS_OPER(source) && CanOverride(source, "TOPIC"))
                {
-                       // 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));
+                       if (!channel->HasUser(source) || (channel->IsModeSet('t') && channel->GetPrefixValue(source) < HALFOP_VALUE))
+                       {
+                               ServerInstance->SNO->WriteGlobalSno('v',source->nick+" used oper override to change a topic on "+channel->name);
+                       }
+
+                       // Explicit allow
+                       return MOD_RES_ALLOW;
                }
 
-               // its not defined at all, count as false
-               return false;
+               return MOD_RES_PASSTHRU;
        }
 
-       virtual int OnUserPreKick(User* source, User* user, Channel* chan, const std::string &reason)
+       ModResult OnUserPreKick(User* source, Membership* memb, const std::string &reason)
        {
                if (IS_OPER(source) && CanOverride(source,"KICK"))
                {
-                       if (((chan->GetStatus(source) == STATUS_HOP) && (chan->GetStatus(user) == STATUS_OP)) || (chan->GetStatus(source) < STATUS_VOICE))
+                       // If the kicker's status is less than the target's,                    or      the kicker's status is less than or equal to voice
+                       if ((memb->chan->GetPrefixValue(source) < memb->getRank()) || (memb->chan->GetPrefixValue(source) <= VOICE_VALUE))
                        {
-                               ServerInstance->SNO->WriteToSnoMask('O',std::string(source->nick)+" Override-Kicked "+std::string(user->nick)+" on "+std::string(chan->name)+" ("+reason+")");
+                               ServerInstance->SNO->WriteGlobalSno('v',source->nick+" used oper override to kick "+memb->user->nick+" on "+memb->chan->name+" ("+reason+")");
+                               return MOD_RES_ALLOW;
                        }
-                       /* Returning -1 explicitly allows the kick */
-                       return -1;
                }
-               return 0;
+               return MOD_RES_PASSTHRU;
        }
 
-       virtual int OnAccessCheck(User* source,User* dest,Channel* channel,int access_type)
+       ModResult OnPreMode(User* source,User* dest,Channel* channel, const std::vector<std::string>& parameters)
        {
-               if (IS_OPER(source))
-               {
-                       if (source && channel)
-                       {
-                               // 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
-                               int mode = channel->GetStatus(source);
-                               switch (access_type)
-                               {
-                                       case AC_DEOP:
-                                               if (CanOverride(source,"MODEDEOP"))
-                                               {
-                                                       if (NoisyOverride)
-                                                       if ((!channel->HasUser(source)) || (mode < STATUS_OP))
-                                                               OverDeops++;
-                                                       return ACR_ALLOW;
-                                               }
-                                               else
-                                               {
-                                                       return ACR_DEFAULT;
-                                               }
-                                       break;
-                                       case AC_OP:
-                                               if (CanOverride(source,"MODEOP"))
-                                               {
-                                                       if (NoisyOverride)
-                                                       if ((!channel->HasUser(source)) || (mode < STATUS_OP))
-                                                               OverOps++;
-                                                       return ACR_ALLOW;
-                                               }
-                                               else
-                                               {
-                                                       return ACR_DEFAULT;
-                                               }
-                                       break;
-                                       case AC_VOICE:
-                                               if (CanOverride(source,"MODEVOICE"))
-                                               {
-                                                       if (NoisyOverride)
-                                                       if ((!channel->HasUser(source)) || (mode < STATUS_HOP))
-                                                               OverVoices++;
-                                                       return ACR_ALLOW;
-                                               }
-                                               else
-                                               {
-                                                       return ACR_DEFAULT;
-                                               }
-                                       break;
-                                       case AC_DEVOICE:
-                                               if (CanOverride(source,"MODEDEVOICE"))
-                                               {
-                                                       if (NoisyOverride)
-                                                       if ((!channel->HasUser(source)) || (mode < STATUS_HOP))
-                                                               OverDevoices++;
-                                                       return ACR_ALLOW;
-                                               }
-                                               else
-                                               {
-                                                       return ACR_DEFAULT;
-                                               }
-                                       break;
-                                       case AC_HALFOP:
-                                               if (CanOverride(source,"MODEHALFOP"))
-                                               {
-                                                       if (NoisyOverride)
-                                                       if ((!channel->HasUser(source)) || (mode < STATUS_OP))
-                                                               OverHalfops++;
-                                                       return ACR_ALLOW;
-                                               }
-                                               else
-                                               {
-                                                       return ACR_DEFAULT;
-                                               }
-                                       break;
-                                       case AC_DEHALFOP:
-                                               if (CanOverride(source,"MODEDEHALFOP"))
-                                               {
-                                                       if (NoisyOverride)
-                                                       if ((!channel->HasUser(source)) || (mode < STATUS_OP))
-                                                               OverDehalfops++;
-                                                       return ACR_ALLOW;
-                                               }
-                                               else
-                                               {
-                                                       return ACR_DEFAULT;
-                                               }
-                                       break;
-                               }
+               if (!source || !channel)
+                       return MOD_RES_PASSTHRU;
+               if (!IS_OPER(source) || !IS_LOCAL(source))
+                       return MOD_RES_PASSTHRU;
 
-                               if (CanOverride(source,"OTHERMODE"))
-                               {
-                                       if (NoisyOverride)
-                                       if ((!channel->HasUser(source)) || (mode < STATUS_OP))
-                                       {
-                                               OverriddenMode = true;
-                                               OverOps = OverDeops = OverVoices = OverDevoices = OverHalfops = OverDehalfops = 0;
-                                       }
-                                       return ACR_ALLOW;
-                               }
-                               else
-                               {
-                                       return ACR_DEFAULT;
-                               }
-                       }
-               }
+               unsigned int mode = channel->GetPrefixValue(source);
 
-               return ACR_DEFAULT;
+               if (!IsOverride(mode, parameters[1]))
+                       return MOD_RES_PASSTHRU;
+
+               if (CanOverride(source, "MODE"))
+               {
+                       std::string msg = source->nick+" overriding modes:";
+                       for(unsigned int i=0; i < parameters.size(); i++)
+                               msg += " " + parameters[i];
+                       ServerInstance->SNO->WriteGlobalSno('v',msg);
+                       return MOD_RES_ALLOW;
+               }
+               return MOD_RES_PASSTHRU;
        }
 
-       virtual int OnUserPreJoin(User* user, Channel* chan, const char* cname, std::string &privs, const std::string &keygiven)
+       ModResult OnUserPreJoin(User* user, Channel* chan, const char* cname, std::string &privs, const std::string &keygiven)
        {
                if (IS_LOCAL(user) && IS_OPER(user))
                {
                        if (chan)
                        {
-                               if ((chan->modes[CM_INVITEONLY]) && (CanOverride(user,"INVITE")))
+                               if (chan->IsModeSet('i') && (CanOverride(user,"INVITE")))
                                {
                                        irc::string x(chan->name.c_str());
-                                       if (!user->IsInvited(x))
+                                       if (!IS_LOCAL(user)->IsInvited(x))
                                        {
                                                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;
+                                                       return MOD_RES_PASSTHRU;
                                                }
 
                                                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('O', user->nick+" used oper override to bypass +i on "+std::string(cname));
+                                               ServerInstance->SNO->WriteGlobalSno('v', user->nick+" used oper override to bypass +i on "+std::string(cname));
                                        }
-                                       return -1;
+                                       return MOD_RES_ALLOW;
                                }
 
-                               if ((!chan->key.empty()) && (CanOverride(user,"KEY")) && keygiven != chan->key)
+                               if (chan->IsModeSet('k') && (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;
+                                               return MOD_RES_PASSTHRU;
                                        }
 
                                        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('O', user->nick+" used oper override to bypass +k on "+std::string(cname));
-                                       return -1;
+                                       ServerInstance->SNO->WriteGlobalSno('v', user->nick+" used oper override to bypass +k on "+std::string(cname));
+                                       return MOD_RES_ALLOW;
                                }
 
-                               if ((chan->limit > 0) && (chan->GetUserCounter() >=  chan->limit) && (CanOverride(user,"LIMIT")))
+                               if (chan->IsModeSet('l') && (chan->GetUserCounter() >= ConvToInt(chan->GetModeParameter('l'))) && (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;
+                                               return MOD_RES_PASSTHRU;
                                        }
 
                                        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('O', user->nick+" used oper override to bypass +l on "+std::string(cname));
-                                       return -1;
+                                       ServerInstance->SNO->WriteGlobalSno('v', user->nick+" used oper override to bypass +l on "+std::string(cname));
+                                       return MOD_RES_ALLOW;
                                }
 
-                               if (CanOverride(user,"BANWALK"))
+                               if (chan->IsBanned(user) && CanOverride(user,"BANWALK"))
                                {
-                                       if (chan->IsBanned(user))
+                                       if (RequireKey && keygiven != "override")
                                        {
-                                               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('O',"%s used oper override to bypass channel ban on %s", user->nick.c_str(), cname);
+                                               // 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 MOD_RES_PASSTHRU;
                                        }
-                                       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->WriteGlobalSno('v',"%s used oper override to bypass channel ban on %s", user->nick.c_str(), cname);
+                                       return MOD_RES_ALLOW;
                                }
                        }
                }
-               return 0;
-       }
-
-       virtual ~ModuleOverride()
-       {
-               ServerInstance->SNO->DisableSnomask('O');
+               return MOD_RES_PASSTHRU;
        }
 
-       virtual Version GetVersion()
+       Version GetVersion()
        {
-               return Version(1,2,0,1,VF_VENDOR,API_VERSION);
+               return Version("Provides support for allowing opers to override certain things",VF_VENDOR);
        }
 };