#include "unrealircd.h"

#define MSG_CAP	"CAP"

long CAP_POISON = 0L;

ModuleHeader MOD_HEADER
  = {
	"third/cap-poison",	/* Name of module */
	"5.0", /* Version */
	"Reject clients requesting invalid caps", /* Short description of module */
	"k4be@PIRC",
	"unrealircd-5",
    };

CMD_OVERRIDE_FUNC(cmd_cap);

MOD_INIT(){
	ClientCapabilityInfo cap;
	ClientCapability *c;

	memset(&cap, 0, sizeof(cap));
	cap.name = "pirc.pl/killme";
	c = ClientCapabilityAdd(modinfo->handle, &cap, &CAP_POISON);

	return MOD_SUCCESS;
}

MOD_LOAD(){
	if(!CommandOverrideAddEx(modinfo->handle, MSG_CAP, 0, cmd_cap)){
		config_error("[%s] Critical: Failed to request command override for CAP: %s", MOD_HEADER.name, ModuleGetErrorStr(modinfo->handle));
	}
	return MOD_SUCCESS;
}

MOD_UNLOAD(){
	return MOD_SUCCESS;
}

CMD_OVERRIDE_FUNC(cmd_cap){
	CallCommandOverride(ovr, client, recv_mtags, parc, parv); // the original command
	if (HasCapabilityFast(client, CAP_POISON)) {
		sendnotice(client, "Your client has requested an invalid capability. Values unknown to the client should be ALL ignored! Please see the spec at https://ircv3.net/specs/extensions/capability-negotiation.html");
		sendnotice(client, "Twój klient zażądał niepoprawnego parametru CAP. Wszystkie nieznane funkcje powinny być ignorowane! Pełna specyfikacja jest dostępna pod adresem https://ircv3.net/specs/extensions/capability-negotiation.html");
		exit_client(client, NULL, "Requested invalid capability");
	}
}