/* Mode support
  *
  * (C) 2008-2011 Adam <Adam@anope.org>
  * (C) 2008-2022 Anope Team <team@anope.org>
  *
  * Please read COPYING and README for further details.
  */
 
 #include "services.h"
 #include "modules.h"
 #include "config.h"
 #include "sockets.h"
 #include "protocol.h"
 #include "channels.h"
 #include "uplink.h"
 
 struct StackerInfo;
 
 /* List of pairs of user/channels and their stacker info */
 static std::map<User *, StackerInfo *> UserStackerObjects;
 static std::map<Channel *, StackerInfo *> ChannelStackerObjects;
 
 /* Array of all modes Anope knows about.*/
 static std::vector<ChannelMode *> ChannelModes;
 static std::vector<UserMode *> UserModes;
 
 /* Modes are in this array are at position
  * modechar. Additionally, status modes are in this array (again) at statuschar.
  */
 static std::vector<ChannelMode *> ChannelModesIdx;
 static std::vector<UserMode *> UserModesIdx;
 
 static std::map<Anope::string, ChannelMode *> ChannelModesByName;
 static std::map<Anope::string, UserMode *> UserModesByName;
 
 /* Sorted by status */
 static std::vector<ChannelModeStatus *> ChannelModesByStatus;
 
 /* Number of generic modes we support */
 unsigned ModeManager::GenericChannelModes = 0, ModeManager::GenericUserModes = 0;
 
 struct StackerInfo
 {
 	/* Modes to be added */
 	std::list<std::pair<Mode *, Anope::string> > AddModes;
 	/* Modes to be deleted */
 	std::list<std::pair<Mode *, Anope::string> > DelModes;
 	/* Bot this is sent from */
 	BotInfo *bi;
 
 	StackerInfo() : bi(NULL) { }
 
 	/** Add a mode to this object
 	 * @param mode The mode
 	 * @param set true if setting, false if unsetting
 	 * @param param The param for the mode
 	 */
 	void AddMode(Mode *mode, bool set, const Anope::string &param);
 };
 
 ChannelStatus::ChannelStatus()
 {
 }
 
 ChannelStatus::ChannelStatus(const Anope::string &m) : modes(m)
 {
 }
 
 void ChannelStatus::AddMode(char c)
 {
 	if (modes.find(c) == Anope::string::npos)
 		modes.append(c);
 }
 
 void ChannelStatus::DelMode(char c)
 {
 	modes = modes.replace_all_cs(c, "");
 }
 
 bool ChannelStatus::HasMode(char c) const
 {
 	return modes.find(c) != Anope::string::npos;
 }
 
 bool ChannelStatus::Empty() const
 {
 	return modes.empty();
 }
 
 void ChannelStatus::Clear()
 {
 	modes.clear();
 }
 
 const Anope::string &ChannelStatus::Modes() const
 {
 	return modes;
 }
 
 Anope::string ChannelStatus::BuildModePrefixList() const
 {
 	Anope::string ret;
 
 	for (size_t i = 0; i < modes.length(); ++i)
 	{
 		ChannelMode *cm = ModeManager::FindChannelModeByChar(modes[i]);
 		if (cm != NULL && cm->type == MODE_STATUS)
 		{
 			ChannelModeStatus *cms = anope_dynamic_static_cast<ChannelModeStatus *>(cm);
 			ret += cms->symbol;
 		}
 	}
 
 	return ret;
 }
 
 Mode::Mode(const Anope::string &mname, ModeClass mcl, char mch, ModeType mt) : name(mname), mclass(mcl), mchar(mch), type(mt)
 {
 }
 
 Mode::~Mode()
 {
 }
 
 bool Mode::CanSet(User *u) const
 {
 	return true;
 }
 
 UserMode::UserMode(const Anope::string &un, char mch) : Mode(un, MC_USER, mch, MODE_REGULAR)
 {
 }
 
 UserModeParam::UserModeParam(const Anope::string &un, char mch) : UserMode(un, mch)
 {
 	this->type = MODE_PARAM;
 }
 
 ChannelMode::ChannelMode(const Anope::string &cm, char mch) : Mode(cm, MC_CHANNEL, mch, MODE_REGULAR)
 {
 }
 
 bool ChannelMode::CanSet(User *u) const
 {
 	EventReturn MOD_RESULT;
 	FOREACH_RESULT(OnCanSet, MOD_RESULT, (u, this));
 	return MOD_RESULT != EVENT_STOP;
 }
 
 ChannelMode *ChannelMode::Wrap(Anope::string &param)
 {
 	return this;
 }
 
 ChannelMode *ChannelMode::Unwrap(Anope::string &param)
 {
 	for (unsigned i = 0; i < listeners.size(); ++i)
 	{
 		ChannelMode *cm = listeners[i]->Unwrap(this, param);
 		if (cm != this)
 			return cm;
 	}
 
 	return this;
 }
 
 ChannelMode *ChannelMode::Unwrap(ChannelMode *, Anope::string &param)
 {
 	throw CoreException("Unwrap in channel mode");
 }
 
 ChannelModeList::ChannelModeList(const Anope::string &cm, char mch) : ChannelMode(cm, mch)
 {
 	this->type = MODE_LIST;
 }
 
 bool ChannelModeList::IsValid(Anope::string &mask) const
 {
 	if (name == "BAN" || name == "EXCEPT" || name == "INVITEOVERRIDE")
 		mask = IRCD->NormalizeMask(mask);
 	return true;
 }
 
 ChannelModeParam::ChannelModeParam(const Anope::string &cm, char mch, bool ma) : ChannelMode(cm, mch), minus_no_arg(ma)
 {
 	this->type = MODE_PARAM;
 }
 
 ChannelModeStatus::ChannelModeStatus(const Anope::string &mname, char modeChar, char msymbol, unsigned mlevel) : ChannelMode(mname, modeChar), symbol(msymbol), level(mlevel)
 {
 	this->type = MODE_STATUS;
 }
 
 template<typename T>
 ChannelModeVirtual<T>::ChannelModeVirtual(const Anope::string &mname, const Anope::string &basename) : T(mname, 0)
 	, base(basename)
 {
 	basech = ModeManager::FindChannelModeByName(base);
 	if (basech)
 		basech->listeners.push_back(this);
 }
 
 template<typename T>
 ChannelModeVirtual<T>::~ChannelModeVirtual()
 {
 	if (basech)
 	{
 		std::vector<ChannelMode *>::iterator it = std::find(basech->listeners.begin(), basech->listeners.end(), this);
 		if (it != basech->listeners.end())
 			basech->listeners.erase(it);
 	}
 }
 
 template<typename T>
 void ChannelModeVirtual<T>::Check()
 {
 	if (basech == NULL)
 	{
 		basech = ModeManager::FindChannelModeByName(base);
 		if (basech)
 			basech->listeners.push_back(this);
 	}
 }
 
 template<typename T>
 ChannelMode *ChannelModeVirtual<T>::Wrap(Anope::string &param)
 {
 	return basech;
 }
 
 template class ChannelModeVirtual<ChannelMode>;
 template class ChannelModeVirtual<ChannelModeList>;
 
 bool UserModeOperOnly::CanSet(User *u) const
 {
 	return u && u->HasMode("OPER");
 }
 
 bool UserModeNoone::CanSet(User *u) const
 {
 	return false;
 }
 
 bool ChannelModeKey::IsValid(Anope::string &value) const
 {
 	if (!value.empty() && value.find(':') == Anope::string::npos && value.find(',') == Anope::string::npos)
 		return true;
 
 	return false;
 }
 
 bool ChannelModeOperOnly::CanSet(User *u) const
 {
 	return u && u->HasMode("OPER");
 }
 
 bool ChannelModeNoone::CanSet(User *u) const
 {
 	return false;
 }
 
 void StackerInfo::AddMode(Mode *mode, bool set, const Anope::string &param)
 {
 	bool is_param = mode->type == MODE_PARAM;
 
 	std::list<std::pair<Mode *, Anope::string> > *list, *otherlist;
 	if (set)
 	{
 		list = &AddModes;
 		otherlist = &DelModes;
 	}
 	else
 	{
 		list = &DelModes;
 		otherlist = &AddModes;
 	}
 
 	/* Loop through the list and find if this mode is already on here */
 	std::list<std::pair<Mode *, Anope::string > >::iterator it, it_end;
 	for (it = list->begin(), it_end = list->end(); it != it_end; ++it)
 	{
 		/* The param must match too (can have multiple status or list modes), but
 		 * if it is a param mode it can match no matter what the param is
 		 */
 		if (it->first == mode && (is_param || param.equals_cs(it->second)))
 		{
 			list->erase(it);
 			/* It can only be on this list once */
 			break;
 		}
 	}
 	/* If the mode is on the other list, remove it from there (eg, we don't want +o-o Adam Adam) */
 	for (it = otherlist->begin(), it_end = otherlist->end(); it != it_end; ++it)
 	{
 		/* The param must match too (can have multiple status or list modes), but
 		 * if it is a param mode it can match no matter what the param is
 		 */
 		if (it->first == mode && (is_param || param.equals_cs(it->second)))
 		{
 			otherlist->erase(it);
 			return;
 			/* Note that we return here because this is like setting + and - on the same mode within the same
 			 * cycle, no change is made. This causes no problems with something like - + and -, because after the
 			 * second mode change the list is empty, and the third mode change starts fresh.
 			 */
 		}
 	}
 
 	/* Add this mode and its param to our list */
 	list->push_back(std::make_pair(mode, param));
 }
 
 static class ModePipe : public Pipe
 {
  public:
 	void OnNotify()
 	{
 		ModeManager::ProcessModes();
 	}
 } *modePipe;
 
 /** Get the stacker info for an item, if one doesn't exist it is created
  * @param Item The user/channel etc
  * @return The stacker info
  */
 template<typename List, typename Object>
 static StackerInfo *GetInfo(List &l, Object *o)
 {
 	typename List::const_iterator it = l.find(o);
 	if (it != l.end())
 		return it->second;
 
 	StackerInfo *s = new StackerInfo();
 	l[o] = s;
 	return s;
 }
 
 /** Build a list of mode strings to send to the IRCd from the mode stacker
  * @param info The stacker info for a channel or user
  * @return a list of strings
  */
 static std::list<Anope::string> BuildModeStrings(StackerInfo *info)
 {
 	std::list<Anope::string> ret;
 	std::list<std::pair<Mode *, Anope::string> >::iterator it, it_end;
 	Anope::string buf = "+", parambuf;
 	unsigned NModes = 0;
 
 	for (it = info->AddModes.begin(), it_end = info->AddModes.end(); it != it_end; ++it)
 	{
 		if (++NModes > IRCD->MaxModes || (buf.length() + parambuf.length() > IRCD->MaxLine - 100)) // Leave room for command, channel, etc
 		{
 			ret.push_back(buf + parambuf);
 			buf = "+";
 			parambuf.clear();
 			NModes = 1;
 		}
 
 		buf += it->first->mchar;
 
 		if (!it->second.empty())
 			parambuf += " " + it->second;
 	}
 
 	if (buf[buf.length() - 1] == '+')
 		buf.erase(buf.length() - 1);
 
 	buf += "-";
 	for (it = info->DelModes.begin(), it_end = info->DelModes.end(); it != it_end; ++it)
 	{
 		if (++NModes > IRCD->MaxModes || (buf.length() + parambuf.length() > IRCD->MaxLine - 100)) // Leave room for command, channel, etc
 		{
 			ret.push_back(buf + parambuf);
 			buf = "-";
 			parambuf.clear();
 			NModes = 1;
 		}
 
 		buf += it->first->mchar;
 
 		if (!it->second.empty())
 			parambuf += " " + it->second;
 	}
 
 	if (buf[buf.length() - 1] == '-')
 		buf.erase(buf.length() - 1);
 
 	if (!buf.empty())
 		ret.push_back(buf + parambuf);
 
 	return ret;
 }
 
 bool ModeManager::AddUserMode(UserMode *um)
 {
 	if (ModeManager::FindUserModeByChar(um->mchar) != NULL)
 		return false;
 	if (ModeManager::FindUserModeByName(um->name) != NULL)
 		return false;
 
 	if (um->name.empty())
 	{
 		um->name = stringify(++GenericUserModes);
 		Log() << "ModeManager: Added generic support for user mode " << um->mchar;
 	}
 
 	unsigned want = um->mchar;
 	if (want >= UserModesIdx.size())
 		UserModesIdx.resize(want + 1);
 	UserModesIdx[want] = um;
 
 	UserModesByName[um->name] = um;
 
 	UserModes.push_back(um);
 
 	FOREACH_MOD(OnUserModeAdd, (um));
 
 	return true;
 }
 
 bool ModeManager::AddChannelMode(ChannelMode *cm)
 {
 	if (cm->mchar && ModeManager::FindChannelModeByChar(cm->mchar) != NULL)
 		return false;
 	if (ModeManager::FindChannelModeByName(cm->name) != NULL)
 		return false;
 
 	if (cm->name.empty())
 	{
 		cm->name = stringify(++GenericChannelModes);
 		Log() << "ModeManager: Added generic support for channel mode " << cm->mchar;
 	}
 
 	if (cm->mchar)
 	{
 		unsigned want = cm->mchar;
 		if (want >= ChannelModesIdx.size())
 			ChannelModesIdx.resize(want + 1);
 		ChannelModesIdx[want] = cm;
 	}
 
 	if (cm->type == MODE_STATUS)
 	{
 		ChannelModeStatus *cms = anope_dynamic_static_cast<ChannelModeStatus *>(cm);
 		unsigned want = cms->symbol;
 		if (want >= ChannelModesIdx.size())
 			ChannelModesIdx.resize(want + 1);
 		ChannelModesIdx[want] = cms;
 
 		RebuildStatusModes();
 	}
 
 	ChannelModesByName[cm->name] = cm;
 
 	ChannelModes.push_back(cm);
 
 	FOREACH_MOD(OnChannelModeAdd, (cm));
 
 	for (unsigned int i = 0; i < ChannelModes.size(); ++i)
 		ChannelModes[i]->Check();
 
 	return true;
 }
 
 void ModeManager::RemoveUserMode(UserMode *um)
 {
 	if (!um)
 		return;
 
 	unsigned want = um->mchar;
 	if (want >= UserModesIdx.size())
 		return;
 
 	if (UserModesIdx[want] != um)
 		return;
 
 	UserModesIdx[want] = NULL;
 
 	UserModesByName.erase(um->name);
 
 	std::vector<UserMode *>::iterator it = std::find(UserModes.begin(), UserModes.end(), um);
 	if (it != UserModes.end())
 		UserModes.erase(it);
 
 	StackerDel(um);
 }
 
 void ModeManager::RemoveChannelMode(ChannelMode *cm)
 {
 	if (!cm)
 		return;
 
 	if (cm->mchar)
 	{
 		unsigned want = cm->mchar;
 		if (want >= ChannelModesIdx.size())
 			return;
 
 		if (ChannelModesIdx[want] != cm)
 			return;
 
 		ChannelModesIdx[want] = NULL;
 	}
 
 	if (cm->type == MODE_STATUS)
 	{
 		ChannelModeStatus *cms = anope_dynamic_static_cast<ChannelModeStatus *>(cm);
 		unsigned want = cms->symbol;
 
 		if (want >= ChannelModesIdx.size())
 			return;
 
 		if (ChannelModesIdx[want] != cm)
 			return;
 
 		ChannelModesIdx[want] = NULL;
 
 		RebuildStatusModes();
 	}
 
 	ChannelModesByName.erase(cm->name);
 
 	std::vector<ChannelMode *>::iterator it = std::find(ChannelModes.begin(), ChannelModes.end(), cm);
 	if (it != ChannelModes.end())
 		ChannelModes.erase(it);
 
 	StackerDel(cm);
 }
 
 ChannelMode *ModeManager::FindChannelModeByChar(char mode)
 {
 	unsigned want = mode;
 	if (want >= ChannelModesIdx.size())
 		return NULL;
 
 	return ChannelModesIdx[want];
 }
 
 UserMode *ModeManager::FindUserModeByChar(char mode)
 {
 	unsigned want = mode;
 	if (want >= UserModesIdx.size())
 		return NULL;
 
 	return UserModesIdx[want];
 }
 
 ChannelMode *ModeManager::FindChannelModeByName(const Anope::string &name)
 {
 	std::map<Anope::string, ChannelMode *>::iterator it = ChannelModesByName.find(name);
 	if (it != ChannelModesByName.end())
 		return it->second;
 	return NULL;
 }
 
 UserMode *ModeManager::FindUserModeByName(const Anope::string &name)
 {
 	std::map<Anope::string, UserMode *>::iterator it = UserModesByName.find(name);
 	if (it != UserModesByName.end())
 		return it->second;
 	return NULL;
 }
 
 char ModeManager::GetStatusChar(char value)
 {
 	unsigned want = value;
 	if (want >= ChannelModesIdx.size())
 		return 0;
 
 	ChannelMode *cm = ChannelModesIdx[want];
 	if (cm == NULL || cm->type != MODE_STATUS || cm->mchar == value)
 		return 0;
 
 	return cm->mchar;
 }
 
 const std::vector<ChannelMode *> &ModeManager::GetChannelModes()
 {
 	return ChannelModes;
 }
 
 const std::vector<UserMode *> &ModeManager::GetUserModes()
 {
 	return UserModes;
 }
 
 const std::vector<ChannelModeStatus *> &ModeManager::GetStatusChannelModesByRank()
 {
 	return ChannelModesByStatus;
 }
 
 static struct StatusSort
 {
 	bool operator()(ChannelModeStatus *cm1, ChannelModeStatus *cm2) const
 	{
 		return cm1->level > cm2->level;
 	}
 } statuscmp;
 
 void ModeManager::RebuildStatusModes()
 {
 	ChannelModesByStatus.clear();
 	for (unsigned j = 0; j < ChannelModesIdx.size(); ++j)
 	{
 		ChannelMode *cm = ChannelModesIdx[j];
 
 		if (cm && cm->type == MODE_STATUS && std::find(ChannelModesByStatus.begin(), ChannelModesByStatus.end(), cm) == ChannelModesByStatus.end())
 			ChannelModesByStatus.push_back(anope_dynamic_static_cast<ChannelModeStatus *>(cm));
 	}
 	std::sort(ChannelModesByStatus.begin(), ChannelModesByStatus.end(), statuscmp);
 }
 
 void ModeManager::StackerAdd(BotInfo *bi, Channel *c, ChannelMode *cm, bool Set, const Anope::string &Param)
 {
 	StackerInfo *s = GetInfo(ChannelStackerObjects, c);
 	s->AddMode(cm, Set, Param);
 	if (bi)
 		s->bi = bi;
 	else
 		s->bi = c->ci->WhoSends();
 
 	if (!modePipe)
 		modePipe = new ModePipe();
 	modePipe->Notify();
 }
 
 void ModeManager::StackerAdd(BotInfo *bi, User *u, UserMode *um, bool Set, const Anope::string &Param)
 {
 	StackerInfo *s = GetInfo(UserStackerObjects, u);
 	s->AddMode(um, Set, Param);
 	if (bi)
 		s->bi = bi;
 
 	if (!modePipe)
 		modePipe = new ModePipe();
 	modePipe->Notify();
 }
 
 void ModeManager::ProcessModes()
 {
 	if (!UserStackerObjects.empty())
 	{
 		for (std::map<User *, StackerInfo *>::const_iterator it = UserStackerObjects.begin(), it_end = UserStackerObjects.end(); it != it_end; ++it)
 		{
 			User *u = it->first;
 			StackerInfo *s = it->second;
 
 			std::list<Anope::string> ModeStrings = BuildModeStrings(s);
 			for (std::list<Anope::string>::iterator lit = ModeStrings.begin(), lit_end = ModeStrings.end(); lit != lit_end; ++lit)
 				IRCD->SendMode(s->bi, u, "%s", lit->c_str());
 			delete it->second;
 		}
 		UserStackerObjects.clear();
 	}
 
 	if (!ChannelStackerObjects.empty())
 	{
 		for (std::map<Channel *, StackerInfo *>::const_iterator it = ChannelStackerObjects.begin(), it_end = ChannelStackerObjects.end(); it != it_end; ++it)
 		{
 			Channel *c = it->first;
 			StackerInfo *s = it->second;
 
 			std::list<Anope::string> ModeStrings = BuildModeStrings(s);
 			for (std::list<Anope::string>::iterator lit = ModeStrings.begin(), lit_end = ModeStrings.end(); lit != lit_end; ++lit)
 				IRCD->SendMode(s->bi, c, "%s", lit->c_str());
 			delete it->second;
 		}
 		ChannelStackerObjects.clear();
 	}
 }
 
 template<typename T>
 static void StackerDel(std::map<T *, StackerInfo *> &map, T *obj)
 {
 	typename std::map<T *, StackerInfo *>::iterator it = map.find(obj);
 	if (it != map.end())
 	{
 		StackerInfo *si = it->second;
 		std::list<Anope::string> ModeStrings = BuildModeStrings(si);
 		for (std::list<Anope::string>::iterator lit = ModeStrings.begin(), lit_end = ModeStrings.end(); lit != lit_end; ++lit)
 			IRCD->SendMode(si->bi, obj, "%s", lit->c_str());
 
 		delete si;
 		map.erase(it);
 	}
 }
 
 void ModeManager::StackerDel(User *u)
 {
 	::StackerDel(UserStackerObjects, u);
 }
 
 void ModeManager::StackerDel(Channel *c)
 {
 	::StackerDel(ChannelStackerObjects, c);
 }
 
 void ModeManager::StackerDel(Mode *m)
 {
 	for (std::map<User *, StackerInfo *>::const_iterator it = UserStackerObjects.begin(), it_end = UserStackerObjects.end(); it != it_end;)
 	{
 		StackerInfo *si = it->second;
 		++it;
 
 		for (std::list<std::pair<Mode *, Anope::string> >::iterator it2 = si->AddModes.begin(), it2_end = si->AddModes.end(); it2 != it2_end;)
 		{
 			if (it2->first == m)
 				it2 = si->AddModes.erase(it2);
 			else
 				++it2;
 		}
 
 		for (std::list<std::pair<Mode *, Anope::string> >::iterator it2 = si->DelModes.begin(), it2_end = si->DelModes.end(); it2 != it2_end;)
 		{
 			if (it2->first == m)
 				it2 = si->DelModes.erase(it2);
 			else
 				++it2;
 		}
 	}
 
 	for (std::map<Channel *, StackerInfo *>::const_iterator it = ChannelStackerObjects.begin(), it_end = ChannelStackerObjects.end(); it != it_end;)
 	{
 		StackerInfo *si = it->second;
 		++it;
 
 		for (std::list<std::pair<Mode *, Anope::string> >::iterator it2 = si->AddModes.begin(), it2_end = si->AddModes.end(); it2 != it2_end;)
 		{
 			if (it2->first == m)
 				it2 = si->AddModes.erase(it2);
 			else
 				++it2;
 		}
 
 		for (std::list<std::pair<Mode *, Anope::string> >::iterator it2 = si->DelModes.begin(), it2_end = si->DelModes.end(); it2 != it2_end;)
 		{
 			if (it2->first == m)
 				it2 = si->DelModes.erase(it2);
 			else
 				++it2;
 		}
 	}
 }
 
 Entry::Entry(const Anope::string &m, const Anope::string &fh) : name(m), mask(fh), cidr_len(0), family(0)
 {
 	Anope::string n, u, h;
 
 	size_t at = fh.find('@');
 	if (at != Anope::string::npos)
 	{
 		this->host = fh.substr(at + 1);
 
 		const Anope::string &nu = fh.substr(0, at);
 
 		size_t ex = nu.find('!');
 		if (ex != Anope::string::npos)
 		{
 			this->user = nu.substr(ex + 1);
 			this->nick = nu.substr(0, ex);
 		}
 		else
 			this->user = nu;
 	}
 	else
 	{
 		if (fh.find('.') != Anope::string::npos || fh.find(':') != Anope::string::npos)
 			this->host = fh;
 		else
 			this->nick = fh;
 	}
 
 	at = this->host.find('#');
 	if (at != Anope::string::npos)
 	{
 		this->real = this->host.substr(at + 1);
 		this->host = this->host.substr(0, at);
 	}
 
 	/* If the mask is all *'s it will match anything, so just clear it */
 	if (this->nick.find_first_not_of("*") == Anope::string::npos)
 		this->nick.clear();
 
 	if (this->user.find_first_not_of("*") == Anope::string::npos)
 		this->user.clear();
 
 	if (this->host.find_first_not_of("*") == Anope::string::npos)
 		this->host.clear();
 	else
 	{
 		/* Host might be a CIDR range */
 		size_t sl = this->host.find_last_of('/');
 		if (sl != Anope::string::npos)
 		{
 			const Anope::string &cidr_ip = this->host.substr(0, sl),
 						&cidr_range = this->host.substr(sl + 1);
 
 			sockaddrs addr(cidr_ip);
 
 			try
 			{
 				if (addr.valid() && cidr_range.is_pos_number_only())
 				{
 					this->cidr_len = convertTo<unsigned short>(cidr_range);
 
 					/* If we got here, cidr_len is a valid number. */
 
 					this->host = cidr_ip;
 					this->family = addr.family();
 
 					Log(LOG_DEBUG) << "Ban " << mask << " has cidr " << this->cidr_len;
 				}
 			}
 			catch (const ConvertException &) { }
 		}
 	}
 
 	if (this->real.find_first_not_of("*") == Anope::string::npos)
 		this->real.clear();
 }
 
 const Anope::string Entry::GetMask() const
 {
 	return this->mask;
 }
 
 const Anope::string Entry::GetNUHMask() const
 {
 	Anope::string n = nick.empty() ? "*" : nick,
 			u = user.empty() ? "*" : user,
 			h = host.empty() ? "*" : host,
 			r = real.empty() ? "" : "#" + real,
 			c;
 	switch (family)
 	{
 		case AF_INET:
 			if (cidr_len <= 32)
 				c = "/" + stringify(cidr_len);
 			break;
 		case AF_INET6:
 			if (cidr_len <= 128)
 				c = "/" + stringify(cidr_len);
 			break;
 	}
 
 	return n + "!" + u + "@" + h + c + r;
 }
 
 bool Entry::Matches(User *u, bool full) const
 {
 	/* First check if this mode has defined any matches (usually for extbans). */
 	if (IRCD->IsExtbanValid(this->mask))
 	{
 		ChannelMode *cm = ModeManager::FindChannelModeByName(this->name);
 		if (cm != NULL && cm->type == MODE_LIST)
 		{
 			ChannelModeList *cml = anope_dynamic_static_cast<ChannelModeList *>(cm);
 			if (cml->Matches(u, this))
 				return true;
 		}
 	}
 
 	/* If the user's displayed host is their real host, then we can do a full match without
 	 * having to worry about exposing a user's IP
 	 */
 	full |= u->GetDisplayedHost() == u->host;
 
 	bool ret = true;
 
 	if (!this->nick.empty() && !Anope::Match(u->nick, this->nick))
 		ret = false;
 
 	if (!this->user.empty() && !Anope::Match(u->GetVIdent(), this->user) && (!full || !Anope::Match(u->GetIdent(), this->user)))
 		ret = false;
 
 	if (this->cidr_len && full)
 	{
 		try
 		{
 			if (!cidr(this->host, this->cidr_len).match(u->ip))
 				ret = false;
 		}
 		catch (const SocketException &)
 		{
 			ret = false;
 		}
 	}
 	else if (!this->host.empty() && !Anope::Match(u->GetDisplayedHost(), this->host) && !Anope::Match(u->GetCloakedHost(), this->host) &&
 		(!full || (!Anope::Match(u->host, this->host) && !Anope::Match(u->ip.addr(), this->host))))
 		ret = false;
 
 	if (!this->real.empty() && !Anope::Match(u->realname, this->real))
 		ret = false;
 
 	return ret;
 }

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