Rewrote all of the defcon code, and moved most of it to os_defcon. This fixes defcon to have the ability to use modes introduced to Anope at a later time than on startup (eg, from the IRCd), amongst other things

git-svn-id: http://anope.svn.sourceforge.net/svnroot/anope/trunk@2597 5417fbe8-f217-4b02-8779-1006273d7864

22 files changed, 537 insertions, 387 deletions

diff --git a/include/extern.h b/include/extern.h
index 30d515e5b..09055b491 100644
--- a/include/extern.h
+++ b/include/extern.h
@@ -389,9 +389,6 @@ E int NumUlines;
 E int read_config(int reload);
 
 E int DefConLevel;
-E int DefCon[6];
-E int checkDefCon(int level);
-E void resetDefCon(int level);
 E int DefConSessionLimit;
 E time_t DefConTimeOut;
 E time_t DefConAKILL;
@@ -692,10 +689,13 @@ E int check_szline(const char *nick, char *ip);
 
 E Server *server_global(Server * s, char *msg);
 
+E bool CheckDefCon(DefconLevel Level);
+E bool CheckDefCon(int level, DefconLevel Level);
+E void AddDefCon(int level, DefconLevel Level);
+E void DelDefCon(int level, DefconLevel Level);
+E std::vector<std::bitset<32> > DefCon;
+
 E bool OSOpersOnly;
-E time_t DefContimer;
-E void runDefCon();
-E int defconParseModeString(const char *str);
 
 /**** process.c ****/
 
diff --git a/include/modules.h b/include/modules.h
index a82f5cd56..4cdbdaacc 100644
--- a/include/modules.h
+++ b/include/modules.h
@@ -558,6 +558,15 @@ class CoreExport Module
 	 */
 	virtual void OnUserNickChange(User *u, const char *oldnick) { }
 
+	/** Called immediatly when a user tries to run a command
+	 * @param service The service
+	 * @param u The user
+	 * @param cmd The command
+	 * @param c The command class (if it exists)
+	 * @return EVENT_CONTINUE to let other modules decide, EVENT_STOP to halt the command and not process it
+	 */
+	virtual EventReturn OnPreCommandRun(const char *service, User *u, const char *cmd, Command *c) { return EVENT_CONTINUE; }
+
 	/** Called before a command is due to be executed.
 	 * @param u The user executing the command
 	 * @param service The service the command is associated with
@@ -726,7 +735,7 @@ class CoreExport Module
 	/** Called when defcon level changes
 	 * @param level The level
 	 */
-	virtual void OnDefconLevel(const char *level) { }
+	virtual void OnDefconLevel(int level) { }
 
 	/** Called when a server quits
 	 * @param server The server
@@ -818,6 +827,16 @@ class CoreExport Module
 	 */
 	virtual void OnDelChan(ChannelInfo *ci) { }
 
+	/** Called when a new channel is created
+	 * @param c The channel
+	 */
+	virtual void OnChannelCreate(Channel *c) { }
+
+	/** Called when a channel is deleted
+	 * @param c The channel
+	 */
+	virtual void OnChannelDelete(Channel *c) { }
+
 	/** Called when a nick is dropped
 	 * @param nick The nick
 	 */
@@ -859,11 +878,6 @@ class CoreExport Module
 	 */
 	virtual void OnNickUnsuspended(NickAlias *na) { }
 
-	/** Called when the defcon level is changed
-	 * @param level The level
-	 */
-	virtual void OnDefconLevel(int level) { }
-
 	/** Called on finduser()
 	 * @param u pointer to the user
 	 */
@@ -985,7 +999,8 @@ enum Implementation
 
 		/* ChanServ */
 		I_OnChanForbidden, I_OnChanSuspend, I_OnChanDrop, I_OnChanExpire, I_OnAccessAdd, I_OnAccessChange,
-		I_OnAccessDel, I_OnAccessClear, I_OnChanRegistered, I_OnChanUnsuspend, I_OnDelChan,
+		I_OnAccessDel, I_OnAccessClear, I_OnChanRegistered, I_OnChanUnsuspend, I_OnDelChan, I_OnChannelCreate,
+		I_OnChannelDelete,
 
 		/* BotServ */
 		I_OnBotJoin, I_OnBotKick, I_OnBotCreate, I_OnBotChange, I_OnBotDelete, I_OnBotAssign, I_OnBotUnAssign,
@@ -1002,7 +1017,7 @@ enum Implementation
 		I_OnDefconLevel,
 
 		/* Other */
-		I_OnReload, I_OnPreServerConnect, I_OnNewServer, I_OnServerConnect, I_OnPreCommand, I_OnPostCommand, I_OnPostLoadDatabases, I_OnSaveDatabase, I_OnBackupDatabase,
+		I_OnReload, I_OnPreServerConnect, I_OnNewServer, I_OnServerConnect, I_OnPreCommandRun, I_OnPreCommand, I_OnPostCommand, I_OnPostLoadDatabases, I_OnSaveDatabase, I_OnBackupDatabase,
 		I_OnPreDatabaseExpire, I_OnDatabaseExpire, I_OnPreRestart, I_OnRestart, I_OnPreShutdown, I_OnShutdown, I_OnSignal,
 		I_OnServerQuit, I_OnTopicUpdated,
 		I_OnEncrypt, I_OnEncryptInPlace, I_OnEncryptCheckLen, I_OnDecrypt, I_OnCheckPassword,
diff --git a/include/services.h b/include/services.h
index 3acbd6ebd..d733aff55 100644
--- a/include/services.h
+++ b/include/services.h
@@ -1426,19 +1426,22 @@ struct session_ {
 };
 
 /*************************************************************************/
-/**
- * DEFCON Defines
- **/
-#define DEFCON_NO_NEW_CHANNELS 		1	/* No New Channel Registrations */
-#define DEFCON_NO_NEW_NICKS 		2	/* No New Nick Registrations */
-#define DEFCON_NO_MLOCK_CHANGE		4	/* No MLOCK changes */
-#define DEFCON_FORCE_CHAN_MODES		8	/* Force Chan Mode */
-#define DEFCON_REDUCE_SESSION		16	/* Reduce Session Limit */
-#define DEFCON_NO_NEW_CLIENTS		32	/* Kill any NEW clients */
-#define DEFCON_OPER_ONLY		64	/* Restrict services to oper's only */
-#define DEFCON_SILENT_OPER_ONLY		128	/* Silently ignore non-opers */
-#define DEFCON_AKILL_NEW_CLIENTS	256	/* AKILL any new clients */
-#define DEFCON_NO_NEW_MEMOS		512	/* No New Memos Sent */
+
+/* Defcon */
+enum DefconLevel
+{
+	DEFCON_NO_NEW_CHANNELS,
+	DEFCON_NO_NEW_NICKS,
+	DEFCON_NO_MLOCK_CHANGE,
+	DEFCON_FORCE_CHAN_MODES,
+	DEFCON_REDUCE_SESSION,
+	DEFCON_NO_NEW_CLIENTS,
+	DEFCON_OPER_ONLY,
+	DEFCON_SILENT_OPER_ONLY,
+	DEFCON_AKILL_NEW_CLIENTS,
+	DEFCON_NO_NEW_MEMOS
+	
+};
 
 /*************************************************************************/
 
diff --git a/src/channels.c b/src/channels.c
index dbc39e409..3e921e182 100644
--- a/src/channels.c
+++ b/src/channels.c
@@ -1884,6 +1884,8 @@ Channel *chan_create(const char *chan, time_t ts)
 		restore_topic(chan);
 	}
 
+	FOREACH_MOD(I_OnChannelCreate, OnChannelCreate(c));
+
 	return c;
 }
 
@@ -1895,6 +1897,8 @@ void chan_delete(Channel * c)
 {
 	BanData *bd, *next;
 
+	FOREACH_MOD(I_OnChannelDelete, OnChannelDelete(c));
+
 	if (debug)
 		alog("debug: Deleting channel %s", c->name);
 
diff --git a/src/chanserv.c b/src/chanserv.c
index 4175b625e..a6aee4aaf 100644
--- a/src/chanserv.c
+++ b/src/chanserv.c
@@ -813,8 +813,7 @@ void check_modes(Channel * c)
 			c->RemoveMode(CMODE_REGISTERED);
 			ircdproto->SendMode(whosends(ci), c->name, "-r");
 		}
-		/* Channels that are not regged also need the defcon modes.. ~ Viper */
-		/* return; */
+		return;
 	}
 
 	*end++ = '+';
@@ -823,8 +822,8 @@ void check_modes(Channel * c)
 	{
 		cm = it->second;
 
-		/* If this channel does not have the mode and the mode is mlocked/defcon'd */
-		if (!c->HasMode(cm->Name) && (ci && ci->HasMLock(cm->Name, true)) || (DefConModesSet && DefConModesCI.HasMLock(cm->Name, true)))
+		/* If this channel does not have the mode and the mode is mlocked */
+		if (!c->HasMode(cm->Name) && ci->HasMLock(cm->Name, true))
 		{
 			*end++ = it->first;
 			c->SetMode(cm->Name);
@@ -833,14 +832,7 @@ void check_modes(Channel * c)
 			if (cm->Type == MODE_PARAM)
 			{
 				cmp = static_cast<ChannelModeParam *>(cm);
-
-				param.clear();
-				if (DefConModesSet && DefConModesCI.HasMLock(cm->Name, true))
-					DefConModesCI.GetParam(cmp->Name, &param);
-				else if (ci)
-					ci->GetParam(cmp->Name, &param);
-				else
-					alog("Warning: Got no param for mode %c on channel %s but was expecting one", cmp->ModeChar, c->name);
+				ci->GetParam(cmp->Name, &param);
 
 				if (!param.empty())
 				{
@@ -852,19 +844,12 @@ void check_modes(Channel * c)
 				}
 			}
 		}
-		/* If this is a param mode and its mlocked or defcon has it set negative */
-		else if (cm->Type == MODE_PARAM && c->HasMode(cm->Name) && (ci && ci->HasMLock(cm->Name, true) || (DefConModesSet && DefConModesCI.HasMLock(cm->Name, true))))
+		/* If this is a param mode and its mlocked and is set negative */
+		else if (cm->Type == MODE_PARAM && c->HasMode(cm->Name) && ci->HasMLock(cm->Name, true))
 		{
 			cmp = static_cast<ChannelModeParam *>(cm);
-
 			c->GetParam(cmp->Name, &param);
-
-			if (DefConModesSet && DefConModesCI.HasMLock(cm->Name, true))
-				DefConModesCI.GetParam(cmp->Name, &ciparam);
-			else if (ci)
-				ci->GetParam(cmp->Name, &ciparam);
-			else
-				alog("Warning: Got no param for mode %c on channel %s but was expecting one", cmp->ModeChar, c->name);
+			ci->GetParam(cmp->Name, &ciparam);
 
 			if (!param.empty() && !ciparam.empty() && param != ciparam)
 			{
@@ -889,7 +874,7 @@ void check_modes(Channel * c)
 		cm = it->second;
 
 		/* If the channel has the mode */
-		if (c->HasMode(cm->Name) && (ci && ci->HasMLock(cm->Name, false)) || (DefConModesSet && DefConModesCI.HasMLock(cm->Name, false)))
+		if (c->HasMode(cm->Name) && ci->HasMLock(cm->Name, false))
 		{
 			*end++ = it->first;
 			c->RemoveMode(cm->Name);
diff --git a/src/commands.c b/src/commands.c
index 960f5ac06..9247307a3 100644
--- a/src/commands.c
+++ b/src/commands.c
@@ -54,25 +54,18 @@ void mod_run_cmd(char *service, User * u, CommandHash * cmdTable[], const char *
 	Command *c = findCommand(cmdTable, cmd);
 	int retVal = MOD_CONT;
 	ChannelInfo *ci;
+	EventReturn MOD_RESULT;
 
+	FOREACH_RESULT(I_OnPreCommandRun, OnPreCommandRun(service, u, cmd, c));
+	if (MOD_RESULT == EVENT_STOP)
+		return;
+	
 	if (!c)
 	{
-		if ((!checkDefCon(DEFCON_SILENT_OPER_ONLY)) || is_oper(u))
-		{
-			notice_lang(service, u, UNKNOWN_COMMAND_HELP, cmd, service);
-		}
+		notice_lang(service, u, UNKNOWN_COMMAND_HELP, cmd, service);
 		return;
 	}
 
-	if ((checkDefCon(DEFCON_OPER_ONLY) || checkDefCon(DEFCON_SILENT_OPER_ONLY)) && !is_oper(u))
-	{
-		if (!checkDefCon(DEFCON_SILENT_OPER_ONLY))
-		{
-			notice_lang(service, u, OPER_DEFCON_DENIED);
-			return;
-		}
-	}
-
 	if (!c->HasFlag(CFLAG_ALLOW_UNREGISTERED))
 	{
 		// Command requires registered users only
@@ -120,7 +113,6 @@ void mod_run_cmd(char *service, User * u, CommandHash * cmdTable[], const char *
 		return;
 	}
 
-	EventReturn MOD_RESULT = EVENT_CONTINUE;
 	FOREACH_RESULT(I_OnPreCommand, OnPreCommand(u, c->service, c->name.c_str(), params));
 	if (MOD_RESULT == EVENT_STOP)
 		return;
diff --git a/src/config.c b/src/config.c
index 1cdb0ef92..89342ff13 100644
--- a/src/config.c
+++ b/src/config.c
@@ -235,7 +235,6 @@ static std::string DefCon1;
 static std::string DefCon2;
 static std::string DefCon3;
 static std::string DefCon4;
-int DefCon[6];
 time_t DefConTimeOut;
 int DefConSessionLimit;
 time_t DefConAKILL;
@@ -1952,8 +1951,9 @@ int read_config(int reload)
 	 **/
 	if (DefConLevel) {
 		/* Build DefCon's */
-		DefCon[0] = 0;
-		for (int level = 1; level < 5; ++level) {
+		DefCon.reserve(6);
+		DefCon[5].reset();
+		for (unsigned int level = 1; level < 5; ++level) {
 			DefCon[level] = 0;
 			std::string *levelDefinition = NULL;
 			switch (level) {
@@ -1972,28 +1972,33 @@ int read_config(int reload)
 			spacesepstream operations(*levelDefinition);
 			std::string operation;
 			while (operations.GetToken(operation)) {
-				if (operation == "nonewchannels") DefCon[level] |= DEFCON_NO_NEW_CHANNELS;
-				else if (operation == "nonewnicks") DefCon[level] |= DEFCON_NO_NEW_NICKS;
-				else if (operation == "nomlockchanges") DefCon[level] |= DEFCON_NO_MLOCK_CHANGE;
-				else if (operation == "forcechanmodes") DefCon[level] |= DEFCON_FORCE_CHAN_MODES;
-				else if (operation == "reducedsessions") DefCon[level] |= DEFCON_REDUCE_SESSION;
-				else if (operation == "nonewclients") DefCon[level] |= DEFCON_NO_NEW_CLIENTS;
-				else if (operation == "operonly") DefCon[level] |= DEFCON_OPER_ONLY;
-				else if (operation == "silentoperonly") DefCon[level] |= DEFCON_SILENT_OPER_ONLY;
-				else if (operation == "akillnewclients") DefCon[level] |= DEFCON_AKILL_NEW_CLIENTS;
-				else if (operation == "nonewmemos") DefCon[level] |= DEFCON_NO_NEW_MEMOS;
+				if (operation == "nonewchannels") AddDefCon(level, DEFCON_NO_NEW_CHANNELS);
+				else if (operation == "nonewnicks") AddDefCon(level, DEFCON_NO_NEW_NICKS);
+				else if (operation == "nomlockchanges") AddDefCon(level, DEFCON_NO_MLOCK_CHANGE); 
+				else if (operation == "forcechanmodes") AddDefCon(level, DEFCON_FORCE_CHAN_MODES);
+				else if (operation == "reducedsessions") AddDefCon(level, DEFCON_REDUCE_SESSION);
+				else if (operation == "nonewclients") AddDefCon(level, DEFCON_NO_NEW_CLIENTS);
+				else if (operation == "operonly") AddDefCon(level, DEFCON_OPER_ONLY);
+				else if (operation == "silentoperonly") AddDefCon(level, DEFCON_SILENT_OPER_ONLY);
+				else if (operation == "akillnewclients") AddDefCon(level, DEFCON_AKILL_NEW_CLIENTS);
+				else if (operation == "nonewmemos") AddDefCon(level, DEFCON_NO_NEW_MEMOS);
 			}
 		}
-		DefCon[5] = 0; /* DefCon level 5 is always normal operation */
-		for (defconCount = 1; defconCount <= 5; defconCount++) {		/* Check any defcon needed settings */
-			if (DefCon[defconCount] & DEFCON_REDUCE_SESSION) {
+
+		/* Check any defcon needed settings */
+		for (defconCount = 1; defconCount <= 5; defconCount++)
+		{
+			if (CheckDefCon(defconCount, DEFCON_REDUCE_SESSION))
+			{
 				CHECK(DefConSessionLimit);
 			}
-			if (DefCon[defconCount] & DEFCON_AKILL_NEW_CLIENTS) {
+			if (CheckDefCon(defconCount, DEFCON_AKILL_NEW_CLIENTS))
+			{
 				CHECK(DefConAKILL);
 				CHECK(DefConAkillReason);
 			}
-			if (DefCon[defconCount] & DEFCON_FORCE_CHAN_MODES) {
+			if (CheckDefCon(defconCount, DEFCON_FORCE_CHAN_MODES))
+			{
 				CHECK(DefConChanModes);
 			}
 		}
diff --git a/src/core/cs_register.c b/src/core/cs_register.c
index 89985fb93..62737d4aa 100644
--- a/src/core/cs_register.c
+++ b/src/core/cs_register.c
@@ -41,12 +41,6 @@ class CommandCSRegister : public Command
 			return MOD_CONT;
 		}
 
-		if (checkDefCon(DEFCON_NO_NEW_CHANNELS))
-		{
-			notice_lang(s_ChanServ, u, OPER_DEFCON_DENIED);
-			return MOD_CONT;
-		}
-
 		if (*chan == '&')
 			notice_lang(s_ChanServ, u, CHAN_REGISTER_NOT_LOCAL);
 		else if (*chan != '#')
diff --git a/src/core/cs_set.c b/src/core/cs_set.c
index 0036a752a..716144d2c 100644
--- a/src/core/cs_set.c
+++ b/src/core/cs_set.c
@@ -193,11 +193,6 @@ class CommandCSSet : public Command
 		ChannelMode *cm;
 		ChannelModeParam *cmp;
 
-		if (checkDefCon(DEFCON_NO_MLOCK_CHANGE)) {
-			notice_lang(s_ChanServ, u, OPER_DEFCON_DENIED);
-			return MOD_CONT;
-		}
-
 		ci->ClearMLock();
 
 		if (ModeManager::FindChannelModeByName(CMODE_REGISTERED))
diff --git a/src/core/ms_sendall.c b/src/core/ms_sendall.c
index b9636f5fb..56dfbf1c2 100644
--- a/src/core/ms_sendall.c
+++ b/src/core/ms_sendall.c
@@ -33,11 +33,6 @@ class CommandMSSendAll : public Command
 			notice_lang(s_MemoServ, u, MEMO_SEND_DISABLED);
 			return MOD_CONT;
 		}
-		else if (checkDefCon(DEFCON_NO_NEW_MEMOS))
-		{
-			notice_lang(s_MemoServ, u, OPER_DEFCON_DENIED);
-			return MOD_CONT;
-		}
 
 		for (i = 0; i < 1024; ++i)
 		{
diff --git a/src/core/ms_staff.c b/src/core/ms_staff.c
index af2e510f4..e472a0108 100644
--- a/src/core/ms_staff.c
+++ b/src/core/ms_staff.c
@@ -33,11 +33,6 @@ class CommandMSStaff : public Command
 			notice_lang(s_MemoServ, u, MEMO_SEND_DISABLED);
 			return MOD_CONT;
 		}
-		else if (checkDefCon(DEFCON_NO_NEW_MEMOS))
-		{
-			notice_lang(s_MemoServ, u, OPER_DEFCON_DENIED);
-			return MOD_CONT;
-		}
 
 		for (i = 0; i < 1024; ++i)
 		{
diff --git a/src/core/ns_group.c b/src/core/ns_group.c
index ec00ec69d..47499bd75 100644
--- a/src/core/ns_group.c
+++ b/src/core/ns_group.c
@@ -43,11 +43,6 @@ class CommandNSGroup : public Command
 			notice_lang(s_NickServ, u, NICK_GROUP_DISABLED);
 			return MOD_CONT;
 		}
-		if (checkDefCon(DEFCON_NO_NEW_NICKS))
-		{
-			notice_lang(s_NickServ, u, OPER_DEFCON_DENIED);
-			return MOD_CONT;
-		}
 
 		if (!ircdproto->IsNickValid(u->nick))
 		{
diff --git a/src/core/ns_register.c b/src/core/ns_register.c
index 2e580e61c..f0d4c693f 100644
--- a/src/core/ns_register.c
+++ b/src/core/ns_register.c
@@ -201,12 +201,6 @@ class CommandNSRegister : public CommandNSConfirm
 			return MOD_CONT;
 		}
 
-		if (checkDefCon(DEFCON_NO_NEW_NICKS))
-		{
-			notice_lang(s_NickServ, u, OPER_DEFCON_DENIED);
-			return MOD_CONT;
-		}
-
 		if (!is_oper(u) && NickRegDelay && time(NULL) - u->my_signon < NickRegDelay)
 		{
 			notice_lang(s_NickServ, u, NICK_REG_DELAY, NickRegDelay);
diff --git a/src/core/os_defcon.c b/src/core/os_defcon.c
index 4227bc458..426fac779 100644
--- a/src/core/os_defcon.c
+++ b/src/core/os_defcon.c
@@ -16,6 +16,44 @@
 #include "module.h"
 
 void defcon_sendlvls(User *u);
+void runDefCon();
+void defconParseModeString(const char *str);
+void resetDefCon(int level);
+static char *defconReverseModes(const char *modes);
+class DefConTimeout;
+static DefConTimeout *timeout;
+
+class DefConTimeout : public Timer
+{
+  int level;
+
+  public:
+	DefConTimeout(int newlevel) : Timer(DefConTimeOut), level(newlevel) { }
+
+	void Tick(time_t)
+	{
+		if (DefConLevel != level)
+		{
+			DefConLevel = level;
+			FOREACH_MOD(I_OnDefconLevel, OnDefconLevel(level));
+			alog("Defcon level timeout, returning to lvl %d", level);
+			ircdproto->SendGlobops(s_OperServ, getstring(OPER_DEFCON_WALL), s_OperServ, level);
+
+			if (GlobalOnDefcon)
+			{
+				if (DefConOffMessage)
+					oper_global(NULL, "%s", DefConOffMessage);
+				else
+					oper_global(NULL, getstring(DEFCON_GLOBAL), DefConLevel);
+
+				if (GlobalOnDefconMore && !DefConOffMessage)
+						oper_global(NULL, "%s", DefconMessage);
+			}
+
+			runDefCon();
+		}
+	}
+};
 
 class CommandOSDEFCON : public Command
 {
@@ -30,12 +68,6 @@ class CommandOSDEFCON : public Command
 		int newLevel = 0;
 		const char *langglobal = getstring(DEFCON_GLOBAL);
 
-		if (!DefConLevel) /* If we dont have a .conf setting! */
-		{
-			notice_lang(s_OperServ, u, OPER_DEFCON_NO_CONF);
-			return MOD_CONT;
-		}
-
 		if (!lvl)
 		{
 			notice_lang(s_OperServ, u, OPER_DEFCON_CHANGED, DefConLevel);
@@ -52,7 +84,15 @@ class CommandOSDEFCON : public Command
 
 		FOREACH_MOD(I_OnDefconLevel, OnDefconLevel(newLevel));
 
-		DefContimer = time(NULL);
+		if (timeout)
+		{
+			TimerManager::DelTimer(timeout);
+			timeout = NULL;
+		}
+
+		if (DefConTimeOut)
+			timeout = new DefConTimeout(5);
+
 		notice_lang(s_OperServ, u, OPER_DEFCON_CHANGED, DefConLevel);
 		defcon_sendlvls(u);
 		alog("Defcon level changed to %d by Oper %s", newLevel, u->nick);
@@ -97,12 +137,209 @@ class OSDEFCON : public Module
 		this->SetVersion("$Id$");
 		this->SetType(CORE);
 
+		if (!DefConLevel)
+		{
+			throw ModuleException("Invalid configuration settings");
+		}
+
+		Implementation i[] = { I_OnPreUserConnect, I_OnChannelModeSet, I_OnChannelModeUnset, I_OnPreCommandRun, I_OnPreCommand, I_OnUserConnect, I_OnChannelModeAdd, I_OnChannelCreate };
+		ModuleManager::Attach(i, this, 8);
+
 		this->AddCommand(OPERSERV, new CommandOSDEFCON());
+
+		defconParseModeString(DefConChanModes);
 	}
+
 	void OperServHelp(User *u)
 	{
 		notice_lang(s_OperServ, u, OPER_HELP_CMD_DEFCON);
 	}
+
+	EventReturn OnPreUserConnect(User *u)
+	{
+		std::string mask;
+
+		if (u && is_sync(u->server) && CheckDefCon(DEFCON_AKILL_NEW_CLIENTS) && !is_ulined(u->server->name))
+		{
+			if (CheckDefCon(DEFCON_AKILL_NEW_CLIENTS))
+			{
+				mask = "*@" + std::string(u->host);
+				alog("DEFCON: adding akill for %s", mask.c_str());
+				add_akill(NULL, mask.c_str(), s_OperServ,
+					time(NULL) + DefConAKILL,
+					DefConAkillReason ? DefConAkillReason :
+					"DEFCON AKILL");
+			}
+
+			if (CheckDefCon(DEFCON_NO_NEW_CLIENTS) || CheckDefCon(DEFCON_AKILL_NEW_CLIENTS))
+				kill_user(s_OperServ, u->nick, DefConAkillReason);
+
+			return EVENT_STOP;
+		}
+
+		return EVENT_CONTINUE;
+	}
+
+	void OnChannelModeSet(Channel *c, ChannelModeName Name)
+	{
+		ChannelMode *cm = ModeManager::FindChannelModeByName(Name);
+
+		if (CheckDefCon(DEFCON_FORCE_CHAN_MODES) && cm && DefConModesCI.HasMLock(Name, false))
+		{
+			c->RemoveMode(Name);
+			ircdproto->SendMode(findbot(s_OperServ), c->name, "-%c", cm->ModeChar);
+		}
+	}
+
+	void OnChannelModeUnset(Channel *c, ChannelModeName Name)
+	{
+		ChannelMode *cm = ModeManager::FindChannelModeByName(Name);
+
+		if (CheckDefCon(DEFCON_FORCE_CHAN_MODES) && cm && DefConModesCI.HasMLock(Name, true))
+		{
+			std::string param;
+			DefConModesCI.GetParam(Name, &param);
+
+			c->SetMode(Name);
+
+			std::string buf = "+" + std::string(&cm->ModeChar);
+			if (!param.empty())
+				buf += " " + param;
+			ircdproto->SendMode(findbot(s_OperServ), c->name, buf.c_str());
+		}
+	}
+
+	EventReturn OnPreCommandRun(const char *service, User *u, const char *cmd, Command *c)
+	{
+		if (!c)
+		{
+			if (CheckDefCon(DEFCON_SILENT_OPER_ONLY) && !is_oper(u))
+				return EVENT_STOP;
+		}
+		if ((CheckDefCon(DEFCON_OPER_ONLY) || CheckDefCon(DEFCON_SILENT_OPER_ONLY)) && !is_oper(u))
+		{
+			if (!CheckDefCon(DEFCON_SILENT_OPER_ONLY))
+			{
+				notice_lang(service, u, OPER_DEFCON_DENIED);
+			}
+
+			return EVENT_STOP;
+		}
+
+		return EVENT_CONTINUE;
+	}
+
+	EventReturn OnPreCommand(User *u, const std::string &service, const ci::string &command, const std::vector<ci::string> &params)
+	{
+		if (service == s_NickServ)
+		{
+			if (command == "SET")
+			{
+				if (!params.empty() && params[0] == "MLOCK")
+				{
+					if (CheckDefCon(DEFCON_NO_MLOCK_CHANGE))
+					{
+						notice_lang(s_ChanServ, u, OPER_DEFCON_DENIED);
+						return EVENT_STOP;
+					}
+				}
+			}
+			else if (command == "REGISTER" || command == "GROUP")
+			{
+				if (CheckDefCon(DEFCON_NO_NEW_NICKS))
+				{
+					notice_lang(s_NickServ, u, OPER_DEFCON_DENIED);
+					return EVENT_STOP;
+				}
+			}
+		}
+		else if (service == s_ChanServ)
+		{
+			if (command == "REGISTER")
+			{
+				if (CheckDefCon(DEFCON_NO_NEW_CHANNELS))
+				{
+					notice_lang(s_ChanServ, u, OPER_DEFCON_DENIED);
+					return EVENT_STOP;
+				}
+			}
+		}
+		else if (service == s_MemoServ)
+		{
+			if (command == "SEND" || command == "SENDALL")
+			{
+				if (CheckDefCon(DEFCON_NO_NEW_MEMOS))
+				{
+					notice_lang(s_MemoServ, u, OPER_DEFCON_DENIED);
+					return EVENT_STOP;
+				}
+			}
+		}
+
+		return EVENT_CONTINUE;
+	}
+
+	void OnUserConnect(User *u)
+	{
+		Session *session = findsession(u->host);
+		Exception *exception = find_hostip_exception(u->host, u->hostip);
+
+		if (CheckDefCon(DEFCON_REDUCE_SESSION) && !exception)
+		{
+			if (session && session->count > DefConSessionLimit)
+			{
+				if (SessionLimitExceeded)
+					ircdproto->SendMessage(findbot(s_OperServ), u->nick, SessionLimitExceeded, u->host);
+				if (SessionLimitDetailsLoc)
+					ircdproto->SendMessage(findbot(s_OperServ), u->nick, "%s", SessionLimitDetailsLoc);
+
+				kill_user(s_OperServ, u->nick, "Session limit exceeded");
+				session->hits++;
+				if (MaxSessionKill && session->hits >= MaxSessionKill) 
+				{
+					char akillmask[BUFSIZE];
+					snprintf(akillmask, sizeof(akillmask), "*@%s", u->host);
+					add_akill(NULL, akillmask, s_OperServ, time(NULL) + SessionAutoKillExpiry, "Session limit exceeded");
+					ircdproto->SendGlobops(s_OperServ, "Added a temporary AKILL for \2%s\2 due to excessive connections", akillmask);
+				}
+			}
+		}
+	}
+
+	void OnChannelModeAdd(ChannelMode *cm)
+	{
+		if (DefConChanModes)
+		{
+			std::string modes = DefConChanModes;
+
+			if (modes.find(cm->ModeChar) != std::string::npos)
+			{
+				/* New mode has been added to Anope, check to see if defcon
+				 * requires it
+				 */
+				defconParseModeString(DefConChanModes);
+			}
+		}
+	}
+
+	void OnChannelCreate(Channel *c)
+	{
+		char *myModes;
+		int ac;
+		const char **av;
+
+		if (CheckDefCon(DEFCON_FORCE_CHAN_MODES))
+		{
+			myModes = sstrdup(DefConChanModes);
+			ac = split_buf(myModes, &av, 1);
+
+			ircdproto->SendMode(findbot(s_OperServ), c->name, "%s", DefConChanModes);
+			chan_set_modes(s_OperServ, c, ac, av, 1);
+
+			free(av);
+			delete [] myModes;
+		}
+	}
 };
 
 /**
@@ -110,26 +347,191 @@ class OSDEFCON : public Module
  **/
 void defcon_sendlvls(User *u)
 {
-	if (checkDefCon(DEFCON_NO_NEW_CHANNELS))
+	if (CheckDefCon(DEFCON_NO_NEW_CHANNELS))
 		notice_lang(s_OperServ, u, OPER_HELP_DEFCON_NO_NEW_CHANNELS);
-	if (checkDefCon(DEFCON_NO_NEW_NICKS))
+	if (CheckDefCon(DEFCON_NO_NEW_NICKS))
 		notice_lang(s_OperServ, u, OPER_HELP_DEFCON_NO_NEW_NICKS);
-	if (checkDefCon(DEFCON_NO_MLOCK_CHANGE))
+	if (CheckDefCon(DEFCON_NO_MLOCK_CHANGE))
 		notice_lang(s_OperServ, u, OPER_HELP_DEFCON_NO_MLOCK_CHANGE);
-	if (checkDefCon(DEFCON_FORCE_CHAN_MODES) && DefConChanModes)
+	if (CheckDefCon(DEFCON_FORCE_CHAN_MODES) && DefConChanModes)
 		notice_lang(s_OperServ, u, OPER_HELP_DEFCON_FORCE_CHAN_MODES, DefConChanModes);
-	if (checkDefCon(DEFCON_REDUCE_SESSION))
+	if (CheckDefCon(DEFCON_REDUCE_SESSION))
 		notice_lang(s_OperServ, u, OPER_HELP_DEFCON_REDUCE_SESSION, DefConSessionLimit);
-	if (checkDefCon(DEFCON_NO_NEW_CLIENTS))
+	if (CheckDefCon(DEFCON_NO_NEW_CLIENTS))
 		notice_lang(s_OperServ, u, OPER_HELP_DEFCON_NO_NEW_CLIENTS);
-	if (checkDefCon(DEFCON_OPER_ONLY))
+	if (CheckDefCon(DEFCON_OPER_ONLY))
 		notice_lang(s_OperServ, u, OPER_HELP_DEFCON_OPER_ONLY);
-	if (checkDefCon(DEFCON_SILENT_OPER_ONLY))
+	if (CheckDefCon(DEFCON_SILENT_OPER_ONLY))
 		notice_lang(s_OperServ, u, OPER_HELP_DEFCON_SILENT_OPER_ONLY);
-	if (checkDefCon(DEFCON_AKILL_NEW_CLIENTS))
+	if (CheckDefCon(DEFCON_AKILL_NEW_CLIENTS))
 		notice_lang(s_OperServ, u, OPER_HELP_DEFCON_AKILL_NEW_CLIENTS);
-	if (checkDefCon(DEFCON_NO_NEW_MEMOS))
+	if (CheckDefCon(DEFCON_NO_NEW_MEMOS))
 		notice_lang(s_OperServ, u, OPER_HELP_DEFCON_NO_NEW_MEMOS);
 }
 
+void runDefCon()
+{
+	char *newmodes;
+
+	if (CheckDefCon(DEFCON_FORCE_CHAN_MODES))
+	{
+		if (DefConChanModes && !DefConModesSet)
+		{
+			if (DefConChanModes[0] == '+' || DefConChanModes[0] == '-')
+			{
+				alog("DEFCON: setting %s on all chan's", DefConChanModes);
+				DefConModesSet = 1;
+				do_mass_mode(DefConChanModes);
+			}
+		}
+	}
+	else
+	{
+		if (DefConChanModes && (DefConModesSet != 0))
+		{
+			if (DefConChanModes[0] == '+' || DefConChanModes[0] == '-')
+			{
+				DefConModesSet = 0;
+				if ((newmodes = defconReverseModes(DefConChanModes)))
+				{
+					alog("DEFCON: setting %s on all chan's", newmodes);
+					do_mass_mode(newmodes);
+					delete [] newmodes;
+				}
+			}
+		}
+	}
+}
+
+/* Parse the defcon mlock mode string and set the correct global vars.
+ *
+ * @param str mode string to parse
+ * @return 1 if accepted, 0 if failed
+ */
+void defconParseModeString(const char *str)
+{
+	int add = -1;		      /* 1 if adding, 0 if deleting, -1 if neither */
+	unsigned char mode;
+	ChannelMode *cm;
+	ChannelModeParam *cmp;
+	std::string modes, param;
+
+	if (!str)
+		return;
+
+	spacesepstream ss(str);
+
+	DefConModesCI.ClearMLock();
+	ss.GetToken(modes);
+
+	/* Loop while there are modes to set */
+	for (unsigned i = 0; i < modes.size(); ++i)
+	{
+		mode = modes[i];
+
+		switch (mode)
+		{
+			case '+':
+				add = 1;
+				continue;
+			case '-':
+				add = 0;
+				continue;
+			default:
+				if (add < 0)
+					continue;
+		}
+
+		if ((cm = ModeManager::FindChannelModeByChar(mode)))
+		{
+			if (!cm->CanSet(NULL))
+			{
+				alog("DefConChanModes mode character '%c' cannot be locked", mode);
+				continue;
+			}
+			else if (add)
+			{
+				DefConModesCI.SetMLock(cm->Name, true);
+				DefConModesCI.RemoveMLock(cm->Name, false);
+
+				if (cm->Type == MODE_PARAM)
+				{
+					cmp = static_cast<ChannelModeParam *>(cm);
+
+					if (!ss.GetToken(param))
+					{
+						alog("DefConChanModes mode character '%c' has no parameter while one is expected", mode);
+						continue;
+					}
+
+					if (!cmp->IsValid(param.c_str()))
+						continue;
+
+					DefConModesCI.SetParam(cmp->Name, param);
+				}
+			}
+			else
+			{
+				DefConModesCI.RemoveMLock(cm->Name, true);
+
+				if (DefConModesCI.HasMLock(cm->Name, true))
+				{
+					DefConModesCI.RemoveMLock(cm->Name, true);
+
+					if (cm->Type == MODE_PARAM)
+					{
+						cmp = static_cast<ChannelModeParam *>(cm);
+
+						DefConModesCI.UnsetParam(cmp->Name);
+					}
+				}
+			}
+		}
+	}
+
+	if ((cm = ModeManager::FindChannelModeByName(CMODE_REDIRECT)))
+	{
+		/* We can't mlock +L if +l is not mlocked as well. */
+		if (DefConModesCI.HasMLock(cm->Name, true) && !DefConModesCI.HasMLock(CMODE_LIMIT, true))
+		{
+			DefConModesCI.RemoveMLock(CMODE_REDIRECT, true);
+			DefConModesCI.UnsetParam(CMODE_REDIRECT);
+			alog("DefConChanModes must lock mode +l as well to lock mode +L");
+		}
+	}
+
+	/* Some ircd we can't set NOKNOCK without INVITE */
+	/* So check if we need there is a NOKNOCK MODE and that we need INVITEONLY */
+	if (ircd->knock_needs_i && (cm = ModeManager::FindChannelModeByName(CMODE_NOKNOCK)))
+	{
+		if (DefConModesCI.HasMLock(cm->Name, true) && !DefConModesCI.HasMLock(CMODE_INVITE, true))
+		{
+			DefConModesCI.RemoveMLock(CMODE_NOKNOCK, true);
+			alog("DefConChanModes must lock mode +i as well to lock mode +K");
+		}
+	}
+}
+
+static char *defconReverseModes(const char *modes)
+{
+        char *newmodes = NULL;
+        unsigned i = 0;
+        if (!modes) {
+                return NULL;
+        }
+        if (!(newmodes = new char[strlen(modes) + 1])) {
+                return NULL;
+        }
+        for (i = 0; i < strlen(modes); i++) {
+                if (modes[i] == '+')
+                        newmodes[i] = '-';
+                else if (modes[i] == '-')
+                        newmodes[i] = '+';
+                else
+                        newmodes[i] = modes[i];
+        }
+        newmodes[i] = '\0';
+        return newmodes;
+}
+
 MODULE_INIT(OSDEFCON)
diff --git a/src/init.c b/src/init.c
index 6373f79c7..4acf9540d 100644
--- a/src/init.c
+++ b/src/init.c
@@ -406,14 +406,6 @@ int init_secondary(int ac, char **av)
 	/* Parse all remaining command-line options. */
 	parse_options(ac, av);
 
-	/* Parse the defcon mode string if needed */
-	if (DefConLevel) {
-		if (!defconParseModeString(DefConChanModes)) {
-			fprintf(stderr,
-					"services.conf: The given DefConChanModes mode string was incorrect (see log for exact errors)\n");
-			return -1;
-		}
-	}
 #ifndef _WIN32
 	if (!nofork) {
 		if ((i = fork()) < 0) {
diff --git a/src/main.c b/src/main.c
index 4d9bfb1c1..1d2d05f1a 100644
--- a/src/main.c
+++ b/src/main.c
@@ -366,7 +366,6 @@ int main(int ac, char **av, char **envp)
 	time_t last_update;		/* When did we last update the databases? */
 	time_t last_expire;		/* When did we last expire nicks/channels? */
 	time_t last_check; /* When did we last check timeouts? */
-	time_t last_DefCon;		/* When was DefCon last checked? */
 
 	int i;
 	char *progname;
@@ -429,7 +428,6 @@ int main(int ac, char **av, char **envp)
 	last_update = time(NULL);
 	last_expire = time(NULL);
 	last_check = time(NULL);
-	last_DefCon = time(NULL);
 
 	started = 1;
 
@@ -481,11 +479,6 @@ int main(int ac, char **av, char **envp)
 			last_update = t;
 		}
 
-		if ((DefConTimeOut) && (t - last_DefCon >= DefConTimeOut)) {
-			resetDefCon(5);
-			last_DefCon = t;
-		}
-
 		if (delayed_quit)
 			break;
 
diff --git a/src/memoserv.c b/src/memoserv.c
index 8a508e552..64e7d831f 100644
--- a/src/memoserv.c
+++ b/src/memoserv.c
@@ -201,9 +201,6 @@ void memo_send(User * u, const char *name, const char *text, int z)
 
 	if (readonly) {
 		notice_lang(s_MemoServ, u, MEMO_SEND_DISABLED);
-	} else if (checkDefCon(DEFCON_NO_NEW_MEMOS)) {
-		notice_lang(s_MemoServ, u, OPER_DEFCON_DENIED);
-		return;
 	} else if (!text) {
 		if (z == 0)
 			syntax_error(s_MemoServ, u, "SEND", MEMO_SEND_SYNTAX);
@@ -388,7 +385,8 @@ void rsend_notify(User * u, Memo * m, const char *chan)
 	const char *fmt;
 
 	/* Only send receipt if memos are allowed */
-	if ((!readonly) && (!checkDefCon(DEFCON_NO_NEW_MEMOS))) {
+	if ((!readonly))
+	{
 
 		/* Get nick alias for sender */
 		na = findnick(m->sender);
diff --git a/src/modes.cpp b/src/modes.cpp
index 652c94f0c..463e82945 100644
--- a/src/modes.cpp
+++ b/src/modes.cpp
@@ -10,6 +10,7 @@
  */
 
 #include "services.h"
+#include "modules.h"
 
 std::map<char, UserMode *> ModeManager::UserModesByChar;
 std::map<UserModeName, UserMode *> ModeManager::UserModesByName;
diff --git a/src/modules/hs_request.c b/src/modules/hs_request.c
index 4f710db51..779629521 100644
--- a/src/modules/hs_request.c
+++ b/src/modules/hs_request.c
@@ -822,9 +822,6 @@ void req_send_memos(User *u, char *vIdent, char *vHost)
 	char host[BUFSIZE];
 	std::list<std::pair<std::string, std::string> >::iterator it;
 
-	if (checkDefCon(DEFCON_NO_NEW_MEMOS))
-		return;
-
 	if (vIdent)
 		snprintf(host, sizeof(host), "%s@%s", vIdent, vHost);
 	else
diff --git a/src/operserv.c b/src/operserv.c
index 84c5dd366..76d680a99 100644
--- a/src/operserv.c
+++ b/src/operserv.c
@@ -31,12 +31,8 @@ static void free_sqline_entry(SList * slist, void *item);
 static int is_szline_entry_equal(SList * slist, void *item1, void *item2);
 static void free_szline_entry(SList * slist, void *item);
 
-time_t DefContimer;
+std::vector<std::bitset<32> > DefCon;
 int DefConModesSet = 0;
-char *defconReverseModes(const char *modes);
-
-uint32 DefConModesOn;		   /* Modes to be enabled during DefCon */
-uint32 DefConModesOff;		  /* Modes to be disabled during DefCon */
 ChannelInfo DefConModesCI;	  /* ChannelInfo containg params for locked modes
 								 * during DefCon; I would've done this nicer if i
 								 * could, but all damn mode functions require a
@@ -495,14 +491,6 @@ int check_akill(const char *nick, const char *username, const char *host,
 	int i;
 	Akill *ak;
 
-	/**
-	 * If DefCon is set to NO new users - kill the user ;).
-	 **/
-	if (checkDefCon(DEFCON_NO_NEW_CLIENTS)) {
-		kill_user(s_OperServ, nick, DefConAkillReason);
-		return 1;
-	}
-
 	if (akills.count == 0)
 		return 0;
 
@@ -1173,217 +1161,42 @@ static int is_szline_entry_equal(SList * slist, void *item1, void *item2)
 
 /*************************************************************************/
 
-/**
- * Returns 1 if the passed level is part of the CURRENT defcon, else 0 is returned
- **/
-int checkDefCon(int level)
-{
-	return DefCon[DefConLevel] & level;
-}
-
-/**
- * Automaticaly re-set the DefCon level if the time limit has expired.
- **/
-void resetDefCon(int level)
+/** Check if a certain defcon option is currently in affect
+ * @param Level The level
+ * @return true and false
+ */
+bool CheckDefCon(DefconLevel Level)
 {
-	char strLevel[5];
-	snprintf(strLevel, 4, "%d", level);
-	if (DefConLevel != level) {
-		if ((DefContimer)
-			&& (time(NULL) - DefContimer >= DefConTimeOut)) {
-			DefConLevel = level;
-			FOREACH_MOD(I_OnDefconLevel, OnDefconLevel(strLevel));
-			alog("Defcon level timeout, returning to lvl %d", level);
-			ircdproto->SendGlobops(s_OperServ,
-							 getstring(OPER_DEFCON_WALL),
-							 s_OperServ, level);
-			if (GlobalOnDefcon) {
-				if (DefConOffMessage) {
-					oper_global(NULL, "%s", DefConOffMessage);
-				} else {
-					oper_global(NULL, getstring(DEFCON_GLOBAL),
-								DefConLevel);
-				}
-			}
-			if (GlobalOnDefconMore && !DefConOffMessage) {
-				oper_global(NULL, "%s", DefconMessage);
-			}
-			runDefCon();
-		}
-	}
+	if (DefConLevel)
+		return DefCon[DefConLevel][(size_t)Level];
+	return false;
 }
 
-/**
- * Run DefCon level specific Functions.
- **/
-void runDefCon()
+/** Check if a certain defcon option is in a certain defcon level
+ * @param level The defcon level
+ * @param Level The defcon level name
+ * @return true or false
+ */
+bool CheckDefCon(int level, DefconLevel Level)
 {
-	char *newmodes;
-	if (checkDefCon(DEFCON_FORCE_CHAN_MODES)) {
-		if (DefConChanModes && !DefConModesSet) {
-			if (DefConChanModes[0] == '+' || DefConChanModes[0] == '-') {
-				alog("DEFCON: setting %s on all chan's", DefConChanModes);
-				DefConModesSet = 1;
-				do_mass_mode(DefConChanModes);
-			}
-		}
-	} else {
-		if (DefConChanModes && (DefConModesSet != 0)) {
-			if (DefConChanModes[0] == '+' || DefConChanModes[0] == '-') {
-				DefConModesSet = 0;
-				if ((newmodes = defconReverseModes(DefConChanModes))) {
-					alog("DEFCON: setting %s on all chan's", newmodes);
-					do_mass_mode(newmodes);
-					delete [] newmodes;
-				}
-			}
-		}
-	}
+	return DefCon[level][(size_t)Level];
 }
 
-/**
- * Reverse the mode string, used for remove DEFCON chan modes.
- **/
-char *defconReverseModes(const char *modes)
+/** Add a defcon level option to a defcon level
+ * @param level The defcon level
+ * @param Level The defcon level option
+ */
+void AddDefCon(int level, DefconLevel Level)
 {
-	char *newmodes = NULL;
-	unsigned i = 0;
-	if (!modes) {
-		return NULL;
-	}
-	if (!(newmodes = new char[strlen(modes) + 1])) {
-		return NULL;
-	}
-	for (i = 0; i < strlen(modes); i++) {
-		if (modes[i] == '+')
-			newmodes[i] = '-';
-		else if (modes[i] == '-')
-			newmodes[i] = '+';
-		else
-			newmodes[i] = modes[i];
-	}
-	newmodes[i] = '\0';
-	return newmodes;
+	DefCon[level][(size_t)Level] = true;
 }
 
-/* Parse the defcon mlock mode string and set the correct global vars.
- *
- * @param str mode string to parse
- * @return 1 if accepted, 0 if failed
+/** Remove a defcon level option from a defcon level
+ * @param level The defcon level
+ * @param Level The defcon level option
  */
-int defconParseModeString(const char *str)
+void DelDefCon(int level, DefconLevel Level)
 {
-	int add = -1;			   /* 1 if adding, 0 if deleting, -1 if neither */
-	unsigned char mode;
-	ChannelMode *cm;
-	ChannelModeParam *cmp;
-	char *str_copy = sstrdup(str);	  /* We need this copy as str is const -GD */
-	char *param;				/* Store parameters during mode parsing */
-
-	/* Reinitialize everything */
-	DefConModesOn = 0;
-	DefConModesOff = 0;
-
-	/* Initialize strtok() internal buffer */
-	strtok(str_copy, " ");
-
-	/* Loop while there are modes to set */
-	while ((mode = *str++) && (mode != ' ')) {
-		switch (mode) {
-		case '+':
-			add = 1;
-			continue;
-		case '-':
-			add = 0;
-			continue;
-		default:
-			if (add < 0)
-				continue;
-		}
-
-		if ((cm = ModeManager::FindChannelModeByChar(mode)))
-		{
-			if (!cm->CanSet(NULL))
-			{
-				alog("DefConCHanModes mode character '%c' cannot be locked", mode);
-				delete [] str_copy;
-				return 0;
-			}
-			else if (add)
-			{
-				DefConModesCI.SetMLock(cm->Name, true);
-				DefConModesCI.RemoveMLock(cm->Name, false);
-
-				if (cm->Type == MODE_PARAM)
-				{
-					cmp = static_cast<ChannelModeParam *>(cm);
-
-					if (!(param = strtok(NULL, " ")))
-					{
-						alog("DefConChanModes mode character '%c' has no parameter while one is expected", mode);
-						delete [] str_copy;
-						return 0;
-					}
-
-					if (!cmp->IsValid(param))
-						continue;
-
-					DefConModesCI.SetParam(cmp->Name, param);
-				}
-			}
-			else
-			{
-				DefConModesCI.RemoveMLock(cm->Name, true);
-				
-				if (DefConModesCI.HasMLock(cm->Name, true))
-				{
-					DefConModesCI.RemoveMLock(cm->Name, true);
-
-					if (cm->Type == MODE_PARAM)
-					{
-						cmp = static_cast<ChannelModeParam *>(cm);
-
-						DefConModesCI.UnsetParam(cmp->Name);
-					}
-				}
-			}
-		}
-		else
-		{
-			alog("DefConChanModes unknown mode character '%c'", mode);
-			delete [] str_copy;
-			return 0;
-		}
-	}						   /* while (*param) */
-
-	delete [] str_copy;
-
-	if ((cm = ModeManager::FindChannelModeByName(CMODE_REDIRECT)))
-	{
-		/* We can't mlock +L if +l is not mlocked as well. */
-		if (DefConModesCI.HasMLock(cm->Name, true) && !DefConModesCI.HasMLock(CMODE_LIMIT, true))
-		{
-			DefConModesCI.RemoveMLock(CMODE_REDIRECT, true);
-			DefConModesCI.UnsetParam(CMODE_REDIRECT);
-			alog("DefConChanModes must lock mode +l as well to lock mode +L");
-			return 0;
-		}
-	}
-
-	/* Some ircd we can't set NOKNOCK without INVITE */
-	/* So check if we need there is a NOKNOCK MODE and that we need INVITEONLY */
-	if (ircd->knock_needs_i && (cm = ModeManager::FindChannelModeByName(CMODE_NOKNOCK)))
-	{
-		if (DefConModesCI.HasMLock(cm->Name, true) && !DefConModesCI.HasMLock(CMODE_INVITE, true))
-		{
-			DefConModesCI.RemoveMLock(CMODE_NOKNOCK, true);
-			alog("DefConChanModes must lock mode +i as well to lock mode +K");
-			return 0;
-		}
-	}
-
-	/* Everything is set fine, return 1 */
-	return 1;
+	DefCon[level][(size_t)Level] = false;
 }
 
-/*************************************************************************/
diff --git a/src/sessions.c b/src/sessions.c
index 3ea37d9ca..014b9da01 100644
--- a/src/sessions.c
+++ b/src/sessions.c
@@ -138,12 +138,7 @@ int add_session(const char *nick, const char *host, char *hostip)
 	if (session) {
 		exception = find_hostip_exception(host, hostip);
 
-		if (checkDefCon(DEFCON_REDUCE_SESSION)) {
-			sessionlimit =
-				exception ? exception->limit : DefConSessionLimit;
-		} else {
-			sessionlimit = exception ? exception->limit : DefSessionLimit;
-		}
+		sessionlimit = exception ? exception->limit : DefSessionLimit;
 
 		if (sessionlimit != 0 && session->count >= sessionlimit) {
 			if (SessionLimitExceeded)
diff --git a/src/users.c b/src/users.c
index 8a30cd739..32dadbbba 100644
--- a/src/users.c
+++ b/src/users.c
@@ -627,7 +627,6 @@ User *do_nick(const char *source, const char *nick, const char *username, const
 	NickAlias *old_na;		  /* Old nick rec */
 	int nc_changed = 1;		 /* Did nick core change? */
 	int status = 0;			 /* Status to apply */
-	char mask[USERMAX + HOSTMAX + 2];
 	char *logrealname;
 	std::string oldnick;		/* stores the old nick of the user, so we can pass it to OnUserNickChange */
 
@@ -709,22 +708,10 @@ User *do_nick(const char *source, const char *nick, const char *username, const
 		EventReturn MOD_RESULT;
 		FOREACH_RESULT(I_OnPreUserConnect, OnPreUserConnect(user));
 		if (MOD_RESULT == EVENT_STOP)
-			return;
+			return NULL;
 
 		check_akill(nick, username, host, vhost, ipbuf);
 
-		if (is_sync(findserver(servlist, server)) && checkDefCon(DEFCON_AKILL_NEW_CLIENTS) && !is_ulined(server))
-		{
-			strlcpy(mask, "*@", sizeof(mask));
-			strlcat(mask, host, sizeof(mask));
-			alog("DEFCON: adding akill for %s", mask);
-			add_akill(NULL, mask, s_OperServ,
-					  time(NULL) + DefConAKILL,
-					  DefConAkillReason ? DefConAkillReason :
-					  "DEFCON AKILL");
-			check_akill(nick, username, host, vhost, ipbuf);
-		}
-
 		if (ircd->sgline)
 			check_sgline(nick, realname);