Add a config option for exempting classes from connflood.

docs/conf/inspircd.conf.example

@@ -308,6 +308,10 @@
          # This setting only has effect when the connectban module is loaded.
          #useconnectban="yes"
 
+         # useconnflood: Defines if users in this class should be exempt from connflood limits.
+         # This setting only has effect when the connflood module is loaded.
+         #useconnflood="yes"
+
          # usednsbl: Defines whether or not users in this class are subject to DNSBL. Default is yes.
          # This setting only has effect when the dnsbl module is loaded.
          #usednsbl="yes"

docs/conf/providers/irccloud.conf.example

@@ -8,6 +8,7 @@
          globalmax="100"
          localmax="100"
          useconnectban="no"
+         useconnflood="no"
          usednsbl="no">
 
 <connect name="IRCCloud (Brockwell)"  parent="IRCCloud" allow="192.184.10.118">

src/modules/m_connflood.cpp

@@ -27,6 +27,7 @@
 
 class ModuleConnFlood : public Module
 {
+ private:
 	unsigned int seconds;
 	unsigned int timeout;
 	unsigned int boot_wait;
@@ -36,6 +37,16 @@ class ModuleConnFlood : public Module
 	time_t first;
 	std::string quitmsg;
 
+	static bool IsExempt(LocalUser* user)
+	{
+		// E-lined and already banned users shouldn't be hit.
+		if (user->exempt || user->quitting)
+			return true;
+
+		// Users in an exempt class shouldn't be hit.
+		return user->GetClass() && !user->GetClass()->config->getBool("useconnflood", true);
+	}
+
 public:
 	ModuleConnFlood()
 		: conns(0), throttled(false)
@@ -65,7 +76,7 @@ public:
 
 	ModResult OnUserRegister(LocalUser* user) CXX11_OVERRIDE
 	{
-		if (user->exempt)
+		if (IsExempt(user))
 			return MOD_RES_PASSTHRU;
 
 		time_t next = ServerInstance->Time();