]> git.netwichtig.de Git - user/henk/code/inspircd.git/blobdiff - src/modules/m_override.cpp
Add support for blocking tag messages with the deaf mode.
[user/henk/code/inspircd.git] / src / modules / m_override.cpp
index 1bc05a4ef1f6343f9e30989c067a63b0bb241349..289c894bf1df9a3e364fd61fa6c8af2ab0c03352 100644 (file)
@@ -1,14 +1,20 @@
 /*
  * InspIRCd -- Internet Relay Chat Daemon
  *
+ *   Copyright (C) 2020 satmd <satmd@users.noreply.github.com>
+ *   Copyright (C) 2017 B00mX0r <b00mx0r@aureus.pw>
+ *   Copyright (C) 2017 Adam <Adam@anope.org>
+ *   Copyright (C) 2016 Sheogorath <sheogorath@shivering-isles.com>
+ *   Copyright (C) 2013, 2017, 2020 Sadie Powell <sadie@witchery.services>
+ *   Copyright (C) 2013 Daniel Vassdal <shutter@canternet.org>
+ *   Copyright (C) 2012-2015 Attila Molnar <attilamolnar@hush.com>
+ *   Copyright (C) 2012 Shawn Smith <ShawnSmith0828@gmail.com>
+ *   Copyright (C) 2012 Robby <robby@chatbelgie.be>
  *   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) 2009 Uli Schlachter <psychon@inspircd.org>
+ *   Copyright (C) 2008 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>
+ *   Copyright (C) 2004, 2006, 2008, 2010 Craig Edwards <brain@inspircd.org>
  *
  * 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
 
 
 #include "inspircd.h"
+#include "modules/invite.h"
+
+class Override : public SimpleUserModeHandler
+{
+ public:
+       Override(Module* Creator) : SimpleUserModeHandler(Creator, "override", 'O')
+       {
+               oper = true;
+               if (!ServerInstance->Config->ConfValue("override")->getBool("enableumode"))
+                       DisableAutoRegister();
+       }
+};
 
 class ModuleOverride : public Module
 {
        bool RequireKey;
        bool NoisyOverride;
+       bool UmodeEnabled;
+       Override ou;
+       ChanModeReference topiclock;
+       ChanModeReference inviteonly;
+       ChanModeReference key;
+       ChanModeReference limit;
+       Invite::API invapi;
+
+       static bool IsOverride(unsigned int userlevel, const Modes::ChangeList::List& list)
+       {
+               for (Modes::ChangeList::List::const_iterator i = list.begin(); i != list.end(); ++i)
+               {
+                       ModeHandler* mh = i->mh;
+                       if (mh->GetLevelRequired(i->adding) > userlevel)
+                               return true;
+               }
+               return false;
+       }
+
+       ModResult HandleJoinOverride(LocalUser* user, Channel* chan, const std::string& keygiven, const char* bypasswhat, const char* mode)
+       {
+               if (RequireKey && keygiven != "override")
+               {
+                       // Can't join normally -- must use a special key to bypass restrictions
+                       user->WriteNotice("*** You may not join normally. You must join with a key of 'override' to oper override.");
+                       return MOD_RES_PASSTHRU;
+               }
+
+               if (NoisyOverride)
+                       chan->WriteRemoteNotice(InspIRCd::Format("%s used oper override to bypass %s", user->nick.c_str(), bypasswhat));
+               ServerInstance->SNO->WriteGlobalSno('v', user->nick+" used oper override to bypass " + mode + " on " + chan->name);
+               return MOD_RES_ALLOW;
+       }
 
  public:
+       ModuleOverride()
+               : UmodeEnabled(false)
+               , ou(this)
+               , topiclock(this, "topiclock")
+               , inviteonly(this, "inviteonly")
+               , key(this, "key")
+               , limit(this, "limit")
+               , invapi(this)
+       {
+       }
 
        void init() CXX11_OVERRIDE
        {
-               // read our config options (main config file)
-               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));
+               UmodeEnabled = ServerInstance->Config->ConfValue("override")->getBool("enableumode");
        }
 
-       void OnRehash(User* user) CXX11_OVERRIDE
+       void ReadConfig(ConfigStatus& status) CXX11_OVERRIDE
        {
-               // re-read our config options on a rehash
+               // re-read our config options
                ConfigTag* tag = ServerInstance->Config->ConfValue("override");
                NoisyOverride = tag->getBool("noisy");
                RequireKey = tag->getBool("requirekey");
@@ -57,8 +115,11 @@ class ModuleOverride : public Module
 
        bool CanOverride(User* source, const char* token)
        {
-               std::string tokenlist = source->oper->getConfig("override");
+               // If we require oper override umode (+O) but it is not set
+               if (UmodeEnabled && !source->IsModeSet(ou))
+                       return false;
 
+               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));
        }
@@ -68,7 +129,7 @@ class ModuleOverride : public Module
        {
                if (IS_LOCAL(source) && source->IsOper() && CanOverride(source, "TOPIC"))
                {
-                       if (!channel->HasUser(source) || (channel->IsModeSet('t') && channel->GetPrefixValue(source) < HALFOP_VALUE))
+                       if (!channel->HasUser(source) || (channel->IsModeSet(topiclock) && channel->GetPrefixValue(source) < HALFOP_VALUE))
                        {
                                ServerInstance->SNO->WriteGlobalSno('v',source->nick+" used oper override to change a topic on "+channel->name);
                        }
@@ -85,7 +146,8 @@ class ModuleOverride : public Module
                if (source->IsOper() && 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 ((memb->chan->GetPrefixValue(source) < memb->getRank()) || (memb->chan->GetPrefixValue(source) <= VOICE_VALUE))
+                       if ((memb->chan->GetPrefixValue(source) < memb->getRank()) || (memb->chan->GetPrefixValue(source) <= VOICE_VALUE) ||
+                               (memb->chan->GetPrefixValue(source) == HALFOP_VALUE && memb->getRank() == HALFOP_VALUE))
                        {
                                ServerInstance->SNO->WriteGlobalSno('v',source->nick+" used oper override to kick "+memb->user->nick+" on "+memb->chan->name+" ("+reason+")");
                                return MOD_RES_ALLOW;
@@ -94,20 +156,42 @@ class ModuleOverride : public Module
                return MOD_RES_PASSTHRU;
        }
 
-       ModResult OnPreMode(User* source,User* dest,Channel* channel, const std::vector<std::string>& parameters) CXX11_OVERRIDE
+       ModResult OnPreMode(User* source, User* dest, Channel* channel, Modes::ChangeList& modes) CXX11_OVERRIDE
        {
-               if (!source || !channel)
+               if (!channel)
                        return MOD_RES_PASSTHRU;
                if (!source->IsOper() || !IS_LOCAL(source))
                        return MOD_RES_PASSTHRU;
 
+               const Modes::ChangeList::List& list = modes.getlist();
                unsigned int mode = channel->GetPrefixValue(source);
 
-               if (mode < HALFOP_VALUE && CanOverride(source, "MODE"))
+               if (!IsOverride(mode, list))
+                       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];
+                       std::string msg = source->nick + " used oper override to set modes on " + channel->name + ": ";
+
+                       // Construct a MODE string in the old format for sending it as a snotice
+                       std::string params;
+                       char pm = 0;
+                       for (Modes::ChangeList::List::const_iterator i = list.begin(); i != list.end(); ++i)
+                       {
+                               const Modes::Change& item = *i;
+                               if (!item.param.empty())
+                                       params.append(1, ' ').append(item.param);
+
+                               char wanted_pm = (item.adding ? '+' : '-');
+                               if (wanted_pm != pm)
+                               {
+                                       pm = wanted_pm;
+                                       msg += pm;
+                               }
+
+                               msg += item.mh->GetModeChar();
+                       }
+                       msg += params;
                        ServerInstance->SNO->WriteGlobalSno('v',msg);
                        return MOD_RES_ALLOW;
                }
@@ -120,68 +204,21 @@ class ModuleOverride : public Module
                {
                        if (chan)
                        {
-                               if (chan->IsModeSet('i') && (CanOverride(user,"INVITE")))
+                               if (chan->IsModeSet(inviteonly) && (CanOverride(user,"INVITE")))
                                {
-                                       if (!IS_LOCAL(user)->IsInvited(chan))
-                                       {
-                                               if (RequireKey && keygiven != "override")
-                                               {
-                                                       // Can't join normally -- must use a special key to bypass restrictions
-                                                       user->WriteNotice("*** You may not join normally. You must join with a key of 'override' to oper override.");
-                                                       return MOD_RES_PASSTHRU;
-                                               }
-
-                                               if (NoisyOverride)
-                                                       chan->WriteChannelWithServ(ServerInstance->Config->ServerName, "NOTICE %s :%s used oper override to bypass invite-only", cname.c_str(), user->nick.c_str());
-                                               ServerInstance->SNO->WriteGlobalSno('v', user->nick+" used oper override to bypass +i on " + cname);
-                                       }
+                                       if (!invapi->IsInvited(user, chan))
+                                               return HandleJoinOverride(user, chan, keygiven, "invite-only", "+i");
                                        return MOD_RES_ALLOW;
                                }
 
-                               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->WriteNotice("*** You may not join normally. You must join with a key of 'override' to oper override.");
-                                               return MOD_RES_PASSTHRU;
-                                       }
-
-                                       if (NoisyOverride)
-                                               chan->WriteChannelWithServ(ServerInstance->Config->ServerName, "NOTICE %s :%s used oper override to bypass the channel key", cname.c_str(), user->nick.c_str());
-                                       ServerInstance->SNO->WriteGlobalSno('v', user->nick+" used oper override to bypass +k on " + cname);
-                                       return MOD_RES_ALLOW;
-                               }
+                               if (chan->IsModeSet(key) && (CanOverride(user,"KEY")) && keygiven != chan->GetModeParameter(key))
+                                       return HandleJoinOverride(user, chan, keygiven, "the channel key", "+k");
 
-                               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->WriteNotice("*** You may not join normally. You must join with a key of 'override' to oper override.");
-                                               return MOD_RES_PASSTHRU;
-                                       }
-
-                                       if (NoisyOverride)
-                                               chan->WriteChannelWithServ(ServerInstance->Config->ServerName, "NOTICE %s :%s used oper override to bypass the channel limit", cname.c_str(), user->nick.c_str());
-                                       ServerInstance->SNO->WriteGlobalSno('v', user->nick+" used oper override to bypass +l on " + cname);
-                                       return MOD_RES_ALLOW;
-                               }
+                               if (chan->IsModeSet(limit) && (chan->GetUserCounter() >= ConvToNum<size_t>(chan->GetModeParameter(limit))) && (CanOverride(user,"LIMIT")))
+                                       return HandleJoinOverride(user, chan, keygiven, "the channel limit", "+l");
 
                                if (chan->IsBanned(user) && CanOverride(user,"BANWALK"))
-                               {
-                                       if (RequireKey && keygiven != "override")
-                                       {
-                                               // Can't join normally -- must use a special key to bypass restrictions
-                                               user->WriteNotice("*** You may not join normally. You must join with a key of 'override' to oper override.");
-                                               return MOD_RES_PASSTHRU;
-                                       }
-
-                                       if (NoisyOverride)
-                                               chan->WriteChannelWithServ(ServerInstance->Config->ServerName, "NOTICE %s :%s used oper override to bypass channel ban", cname.c_str(), user->nick.c_str());
-                                       ServerInstance->SNO->WriteGlobalSno('v',"%s used oper override to bypass channel ban on %s", user->nick.c_str(), cname.c_str());
-                                       return MOD_RES_ALLOW;
-                               }
+                                       return HandleJoinOverride(user, chan, keygiven, "channel ban", "channel ban");
                        }
                }
                return MOD_RES_PASSTHRU;
@@ -189,7 +226,7 @@ class ModuleOverride : public Module
 
        Version GetVersion() CXX11_OVERRIDE
        {
-               return Version("Provides support for allowing opers to override certain things",VF_VENDOR);
+               return Version("Allows server operators to be given privileges that allow them to ignore various channel-level restrictions.",VF_VENDOR);
        }
 };