[Crash] Add Checks for valid pointers or fix existing. (#3164)

zone/aggro.cpp

@@ -1436,7 +1436,7 @@ void Mob::ClearFeignMemory() {
 	while (remembered_feigned_mobid != feign_memory_list.end())
 	{
 		Mob* remembered_mob = entity_list.GetMob(*remembered_feigned_mobid);
-		if (remembered_mob->IsClient() && remembered_mob != nullptr) { //Still in zone
+		if (remembered_mob && remembered_mob->IsClient()) { //Still in zone
 			remembered_mob->CastToClient()->RemoveXTarget(this, false);
 		}
 		++remembered_feigned_mobid;

zone/attack.cpp

@@ -2835,8 +2835,9 @@ bool NPC::Death(Mob* killer_mob, int64 damage, uint16 spell, EQ::skills::SkillTy
 			if (emote_id) {
 				oos->CastToNPC()->DoNPCEmote(EQ::constants::EmoteEventTypes::KilledNPC, emote_id);
 			}
-
+			if (killer_mob) {
-			killer_mob->TrySpellOnKill(killed_level, spell);
+				killer_mob->TrySpellOnKill(killed_level, spell);
+			}
 		}
 	}
 

zone/aura.cpp

@@ -963,6 +963,10 @@ bool ZoneDatabase::GetAuraEntry(uint16 spell_id, AuraRecord &record)
 
 void Mob::AddAura(Aura *aura, AuraRecord &record)
 {
+	if (!aura) {
+		return;
+	}
+
 	LogAura(
 		"aura owner [{}] spawn_id [{}] aura_name [{}]",
 		GetCleanName(),
@@ -971,7 +975,6 @@ void Mob::AddAura(Aura *aura, AuraRecord &record)
 	);
 
 	// this is called only when it's safe
-	assert(aura != nullptr);
 	strn0cpy(aura_mgr.auras[aura_mgr.count].name, aura->GetCleanName(), 64);
 	aura_mgr.auras[aura_mgr.count].spawn_id = aura->GetID();
 	aura_mgr.auras[aura_mgr.count].aura     = aura;
@@ -998,6 +1001,10 @@ void Mob::AddAura(Aura *aura, AuraRecord &record)
 
 void Mob::AddTrap(Aura *aura, AuraRecord &record)
 {
+	if (!aura) {
+		return;
+	}
+
 	LogAura(
 		"aura owner [{}] spawn_id [{}] aura_name [{}]",
 		GetCleanName(),
@@ -1006,7 +1013,6 @@ void Mob::AddTrap(Aura *aura, AuraRecord &record)
 	);
 
 	// this is called only when it's safe
-	assert(aura != nullptr);
 	strn0cpy(trap_mgr.auras[trap_mgr.count].name, aura->GetCleanName(), 64);
 	trap_mgr.auras[trap_mgr.count].spawn_id = aura->GetID();
 	trap_mgr.auras[trap_mgr.count].aura     = aura;

zone/bot.cpp

@@ -4637,7 +4637,9 @@ void Bot::Damage(Mob *from, int64 damage, uint16 spell_id, EQ::skills::SkillType
 		int64 healed = GetActSpellHealing(spell_id, damage);
 		LogCombatDetail("Applying lifetap heal of [{}] to [{}]", healed, GetCleanName());
 		HealDamage(healed);
-		entity_list.FilteredMessageClose(this, true, RuleI(Range, SpellMessages), Chat::Emote, FilterSocials, "%s beams a smile at %s", GetCleanName(), from->GetCleanName() );
+		if (from) {
+			entity_list.FilteredMessageClose(this, true, RuleI(Range, SpellMessages), Chat::Emote, FilterSocials, "%s beams a smile at %s", GetCleanName(), from->GetCleanName());
+		}
 	}
 
 	CommonDamage(from, damage, spell_id, attack_skill, avoidable, buffslot, iBuffTic, special);
@@ -8552,22 +8554,25 @@ std::vector<Mob*> Bot::GetApplySpellList(
 
 	if (apply_type == ApplySpellType::Raid && IsRaidGrouped()) {
 		auto* r = GetRaid();
-		auto group_id = r->GetGroup(GetCleanName());
+		if (r) {
-		if (r && EQ::ValueWithin(group_id, 0, (MAX_RAID_GROUPS - 1))) {
+			auto group_id = r->GetGroup(GetCleanName());
-			for (const auto& m : r->members) {
+			if (EQ::ValueWithin(group_id, 0, (MAX_RAID_GROUPS - 1))) {
-				if (m.is_bot) {
+				for (const auto& m: r->members) {
-					continue;
+					if (m.is_bot) {
-				}
+						continue;
-				if (m.member && m.member->IsClient() && (!is_raid_group_only || r->GetGroup(m.member) == group_id)) {
-					l.push_back(m.member);
-
-					if (allow_pets && m.member->HasPet()) {
-						l.push_back(m.member->GetPet());
 					}
+					if (m.member && m.member->IsClient() &&
+						(!is_raid_group_only || r->GetGroup(m.member) == group_id)) {
+						l.push_back(m.member);
 
-					const auto& sbl = entity_list.GetBotListByCharacterID(m.member->CharacterID());
+						if (allow_pets && m.member->HasPet()) {
-					for (const auto& b : sbl) {
+							l.push_back(m.member->GetPet());
-						l.push_back(b);
+						}
+
+						const auto& sbl = entity_list.GetBotListByCharacterID(m.member->CharacterID());
+						for (const auto& b: sbl) {
+							l.push_back(b);
+						}
 					}
 				}
 			}

zone/botspellsai.cpp

@@ -1888,11 +1888,15 @@ bool Bot::AIHealRotation(Mob* tar, bool useFastHeals) {
 std::list<BotSpell> Bot::GetBotSpellsForSpellEffect(Bot* botCaster, int spellEffect) {
 	std::list<BotSpell> result;
 
+	if (!botCaster) {
+		return result;
+	}
+
 	if (auto bot_owner = botCaster->GetBotOwner(); !bot_owner) {
 		return result;
 	}
 
-	if (botCaster && botCaster->AI_HasSpells()) {
+	if (botCaster->AI_HasSpells()) {
 		std::vector<BotSpells_Struct> botSpellList = botCaster->AIBot_spells;
 
 		for (int i = botSpellList.size() - 1; i >= 0; i--) {
@@ -1919,11 +1923,15 @@ std::list<BotSpell> Bot::GetBotSpellsForSpellEffect(Bot* botCaster, int spellEff
 std::list<BotSpell> Bot::GetBotSpellsForSpellEffectAndTargetType(Bot* botCaster, int spellEffect, SpellTargetType targetType) {
 	std::list<BotSpell> result;
 
+	if (!botCaster) {
+		return result;
+	}
+
 	if (auto bot_owner = botCaster->GetBotOwner(); !bot_owner) {
 		return result;
 	}
 
-	if (botCaster && botCaster->AI_HasSpells()) {
+	if (botCaster->AI_HasSpells()) {
 		std::vector<BotSpells_Struct> botSpellList = botCaster->AIBot_spells;
 
 		for (int i = botSpellList.size() - 1; i >= 0; i--) {
@@ -1955,11 +1963,15 @@ std::list<BotSpell> Bot::GetBotSpellsForSpellEffectAndTargetType(Bot* botCaster,
 std::list<BotSpell> Bot::GetBotSpellsBySpellType(Bot* botCaster, uint32 spellType) {
 	std::list<BotSpell> result;
 
+	if (!botCaster) {
+		return result;
+	}
+
 	if (auto bot_owner = botCaster->GetBotOwner(); !bot_owner) {
 		return result;
 	}
 
-	if (botCaster && botCaster->AI_HasSpells()) {
+	if (botCaster->AI_HasSpells()) {
 		std::vector<BotSpells_Struct> botSpellList = botCaster->AIBot_spells;
 
 		for (int i = botSpellList.size() - 1; i >= 0; i--) {
@@ -2694,21 +2706,22 @@ BotSpell Bot::GetBestBotSpellForResistDebuff(Bot* botCaster, Mob *tar) {
 	result.SpellIndex = 0;
 	result.ManaCost = 0;
 
-	if (!tar)
+	if (!tar || !botCaster) {
 		return result;
+	}
 
 	int level_mod = (tar->GetLevel() - botCaster->GetLevel())* (tar->GetLevel() - botCaster->GetLevel()) / 2;
-	if (tar->GetLevel() - botCaster->GetLevel() < 0)
+	if (tar->GetLevel() - botCaster->GetLevel() < 0) {
-	{
 		level_mod = -level_mod;
 	}
+
 	bool needsMagicResistDebuff = (tar->GetMR() + level_mod) > 100;
 	bool needsColdResistDebuff = (tar->GetCR() + level_mod) > 100;
 	bool needsFireResistDebuff = (tar->GetFR() + level_mod) > 100;
 	bool needsPoisonResistDebuff = (tar->GetPR() + level_mod) > 100;
 	bool needsDiseaseResistDebuff = (tar->GetDR() + level_mod) > 100;
 
-	if (botCaster && botCaster->AI_HasSpells()) {
+	if (botCaster->AI_HasSpells()) {
 		std::vector<BotSpells_Struct> botSpellList = botCaster->AIBot_spells;
 
 		for (int i = botSpellList.size() - 1; i >= 0; i--) {

zone/client.cpp

@@ -7470,15 +7470,17 @@ const char* Client::GetClassPlural(Client* client) {
 
 void Client::SendWebLink(const char *website)
 {
-	size_t len = strlen(website) + 1;
+	if (website) {
-	if(website != 0 && len > 1)
+		size_t len = strlen(website) + 1;
-	{
+		if (len > 1)
-		auto outapp = new EQApplicationPacket(OP_Weblink, sizeof(Weblink_Struct) + len);
+		{
-		Weblink_Struct *wl = (Weblink_Struct*)outapp->pBuffer;
+			auto outapp = new EQApplicationPacket(OP_Weblink, sizeof(Weblink_Struct) + len);
-		memcpy(wl->weblink, website, len);
+			Weblink_Struct* wl = (Weblink_Struct*)outapp->pBuffer;
-		wl->weblink[len] = '\0';
+			memcpy(wl->weblink, website, len);
+			wl->weblink[len] = '\0';
 
-		FastQueuePacket(&outapp);
+			FastQueuePacket(&outapp);
+		}
 	}
 }
 
@@ -11734,20 +11736,22 @@ std::vector<Mob*> Client::GetApplySpellList(
 
 	if (apply_type == ApplySpellType::Raid && IsRaidGrouped()) {
 		auto* r = GetRaid();
-		auto group_id = r->GetGroup(this);
+		if (r) {
-		if (r && EQ::ValueWithin(group_id, 0, (MAX_RAID_GROUPS - 1))) {
+			auto group_id = r->GetGroup(this);
-			for (const auto& m : r->members) {
+			if (EQ::ValueWithin(group_id, 0, (MAX_RAID_GROUPS - 1))) {
-				if (m.member && m.member->IsClient() && (!is_raid_group_only || r->GetGroup(m.member) == group_id)) {
+				for (const auto& m : r->members) {
-					l.push_back(m.member);
+					if (m.member && m.member->IsClient() && (!is_raid_group_only || r->GetGroup(m.member) == group_id)) {
+						l.push_back(m.member);
 
-					if (allow_pets && m.member->HasPet()) {
+						if (allow_pets && m.member->HasPet()) {
-						l.push_back(m.member->GetPet());
+							l.push_back(m.member->GetPet());
-					}
+						}
 
-					if (allow_bots) {
+						if (allow_bots) {
-						const auto& sbl = entity_list.GetBotListByCharacterID(m.member->CharacterID());
+							const auto& sbl = entity_list.GetBotListByCharacterID(m.member->CharacterID());
-						for (const auto& b : sbl) {
+							for (const auto& b : sbl) {
-							l.push_back(b);
+								l.push_back(b);
+							}
 						}
 					}
 				}

zone/client_packet.cpp

@@ -11775,13 +11775,13 @@ void Client::Handle_OP_RaidCommand(const EQApplicationPacket* app)
 		Bot* player_to_invite = nullptr;
 
 		if (RuleB(Bots, Enabled) && entity_list.GetBotByBotName(raid_command_packet->player_name)) {
-			Bot* player_to_invite = entity_list.GetBotByBotName(raid_command_packet->player_name);
-			Group* player_to_invite_group = player_to_invite->GetGroup();
-
 			if (!player_to_invite) {
 				break;
 			}
 
+			Bot* player_to_invite = entity_list.GetBotByBotName(raid_command_packet->player_name);
+			Group* player_to_invite_group = player_to_invite->GetGroup();
+
 			if (player_to_invite_group && player_to_invite_group->IsGroupMember(this)) {
 				MessageString(Chat::Red, ALREADY_IN_PARTY);
 				break;

zone/client_process.cpp

@@ -1145,6 +1145,7 @@ void Client::OPMemorizeSpell(const EQApplicationPacket* app)
 				const auto* item = inst->GetItem();
 
 				if (
+					item &&
 					RuleB(Character, RestrictSpellScribing) &&
 					!item->IsEquipable(GetRace(), GetClass())
 				) {

zone/embparser.cpp

@@ -520,8 +520,6 @@ bool PerlembParser::SpellHasQuestSub(uint32 spell_id, QuestEventID evt)
 
 bool PerlembParser::ItemHasQuestSub(EQ::ItemInstance *itm, QuestEventID evt)
 {
-	std::stringstream package_name;
-	package_name << "qst_item_" << itm->GetID();
 
 	if (!perl) {
 		return false;
@@ -535,6 +533,9 @@ bool PerlembParser::ItemHasQuestSub(EQ::ItemInstance *itm, QuestEventID evt)
 		return false;
 	}
 
+	std::stringstream package_name;
+	package_name << "qst_item_" << itm->GetID();
+
 	const char *subname = QuestEventSubroutines[evt];
 
 	auto iter = item_quest_status_.find(itm->GetID());

zone/groups.cpp

@@ -298,7 +298,7 @@ bool Group::AddMember(Mob* newmember, const char *NewMemberName, uint32 Characte
 			}
 
 			//put existing group member(s) into the new member's list
-			if(InZone && newmember->IsClient())
+			if(InZone && newmember && newmember->IsClient())
 			{
 				if(IsLeader(members[i]))
 				{
@@ -307,13 +307,13 @@ bool Group::AddMember(Mob* newmember, const char *NewMemberName, uint32 Characte
 				else
 				{
 					strcpy(newmember->CastToClient()->GetPP().groupMembers[x], members[i]->GetCleanName());
-					x++;
+					++x;
 				}
 			}
 		}
 	}
 
-	if(InZone)
+	if(InZone && newmember)
 	{
 		//put new member in his own list.
 		newmember->SetGrouped(true);

zone/hate_list.cpp

@@ -483,20 +483,22 @@ Mob *HateList::GetEntWithMostHateOnList(Mob *center, Mob *skip, bool skip_mezzed
 		while (iterator != list.end())
 		{
 			struct_HateList *cur = (*iterator);
-			if (cur->entity_on_hatelist == skip) {
+			if (cur) {
-				++iterator;
+				if (cur->entity_on_hatelist == skip) {
-				continue;
+					++iterator;
-			}
+					continue;
+				}
 
-			if (skip_mezzed && cur->entity_on_hatelist->IsMezzed()) {
+				if (skip_mezzed && cur->entity_on_hatelist->IsMezzed()) {
-				++iterator;
+					++iterator;
-				continue;
+					continue;
-			}
+				}
 
-			if (cur->entity_on_hatelist != nullptr && ((cur->stored_hate_amount > hate) || cur->is_entity_frenzy))
+				if (cur->entity_on_hatelist != nullptr && ((cur->stored_hate_amount > hate) || cur->is_entity_frenzy))
-			{
+				{
-				top_hate = cur->entity_on_hatelist;
+					top_hate = cur->entity_on_hatelist;
-				hate = cur->stored_hate_amount;
+					hate = cur->stored_hate_amount;
+				}
 			}
 			++iterator;
 		}
@@ -516,24 +518,27 @@ Mob *HateList::GetEntWithMostHateOnList(bool skip_mezzed){
 	while (iterator != list.end())
 	{
 		struct_HateList *cur = (*iterator);
-		LogHateDetail(
-			"Looping GetEntWithMostHateOnList1 [{}] cur [{}] hate [{}] calc [{}]",
-			cur->entity_on_hatelist->GetMobDescription(),
-			cur->stored_hate_amount,
-			hate,
-			(cur->stored_hate_amount > hate)
-		);
 
-		if (cur && cur->entity_on_hatelist != nullptr && (cur->stored_hate_amount > hate))
+		if (cur) {
-		{
 			LogHateDetail(
-				"Looping GetEntWithMostHateOnList2 [{}]",
+				"Looping GetEntWithMostHateOnList1 [{}] cur [{}] hate [{}] calc [{}]",
-				cur->entity_on_hatelist->GetMobDescription()
+				cur->entity_on_hatelist->GetMobDescription(),
+				cur->stored_hate_amount,
+				hate,
+				(cur->stored_hate_amount > hate)
 			);
 
-			if (!skip_mezzed || !cur->entity_on_hatelist->IsMezzed()) {
+			if (cur->entity_on_hatelist != nullptr && (cur->stored_hate_amount > hate))
-				top = cur->entity_on_hatelist;
+			{
-				hate = cur->stored_hate_amount;
+				LogHateDetail(
+					"Looping GetEntWithMostHateOnList2 [{}]",
+					cur->entity_on_hatelist->GetMobDescription()
+				);
+
+				if (!skip_mezzed || !cur->entity_on_hatelist->IsMezzed()) {
+					top = cur->entity_on_hatelist;
+					hate = cur->stored_hate_amount;
+				}
 			}
 		}
 		++iterator;

zone/inventory.cpp

@@ -717,12 +717,15 @@ bool Client::SummonItem(uint32 item_id, int16 charges, uint32 aug1, uint32 aug2,
 
 	EQ::ItemInstance* inst = database.CreateItem(item, charges);
 	auto timestamps = database.GetItemRecastTimestamps(CharacterID());
-	const auto* d = inst->GetItem();
+	if (inst) {
-	if (d->RecastDelay) {
+		const auto* d = inst->GetItem();
-		if (d->RecastType != RECAST_TYPE_UNLINKED_ITEM) {
+		if (d->RecastDelay) {
-			inst->SetRecastTimestamp(timestamps.count(d->RecastType) ? timestamps.at(d->RecastType) : 0);
+			if (d->RecastType != RECAST_TYPE_UNLINKED_ITEM) {
-		} else {
+				inst->SetRecastTimestamp(timestamps.count(d->RecastType) ? timestamps.at(d->RecastType) : 0);
-			inst->SetRecastTimestamp(timestamps.count(d->ID) ? timestamps.at(d->ID) : 0);
+			}
+			else {
+				inst->SetRecastTimestamp(timestamps.count(d->ID) ? timestamps.at(d->ID) : 0);
+			}
 		}
 	}
 
@@ -2043,8 +2046,8 @@ bool Client::SwapItem(MoveItem_Struct* move_in) {
 		}
 		if ((srcbagid && srcbag->GetItem()->BagType == EQ::item::BagTypeTradersSatchel) ||
 		    (dstbagid && dstbag->GetItem()->BagType == EQ::item::BagTypeTradersSatchel) ||
-		    (srcitemid && src_inst->GetItem()->BagType == EQ::item::BagTypeTradersSatchel) ||
+		    (srcitemid && src_inst && src_inst->GetItem()->BagType == EQ::item::BagTypeTradersSatchel) ||
-		    (dstitemid && dst_inst->GetItem()->BagType == EQ::item::BagTypeTradersSatchel)) {
+		    (dstitemid && dst_inst && dst_inst->GetItem()->BagType == EQ::item::BagTypeTradersSatchel)) {
 			Trader_EndTrader();
 			Message(Chat::Red,"You cannot move your Trader Satchels, or items inside them, while Trading.");
 		}

zone/merc.cpp

@@ -3261,6 +3261,10 @@ MercSpell Merc::GetBestMercSpellForTargetedAENuke(Merc* caster, Mob* tar) {
 	result.proc_chance = 0;
 	result.time_cancast = 0;
 
+	if (!caster) {
+		return result;
+	}
+
 	switch(caster->GetStance())
 	{
 	case EQ::constants::stanceBurnAE:
@@ -3272,28 +3276,26 @@ MercSpell Merc::GetBestMercSpellForTargetedAENuke(Merc* caster, Mob* tar) {
 		break;
 	}
 
-	if(caster) {
+	std::list<MercSpell> mercSpellList = GetMercSpellsBySpellType(caster, SpellType_Nuke);
-		std::list<MercSpell> mercSpellList = GetMercSpellsBySpellType(caster, SpellType_Nuke);
 
-		for (auto mercSpellListItr = mercSpellList.begin(); mercSpellListItr != mercSpellList.end();
+	for (auto mercSpellListItr = mercSpellList.begin(); mercSpellListItr != mercSpellList.end();
-		     ++mercSpellListItr) {
+		    ++mercSpellListItr) {
-			// Assuming all the spells have been loaded into this list by level and in descending order
+		// Assuming all the spells have been loaded into this list by level and in descending order
-			if(IsAENukeSpell(mercSpellListItr->spellid) && !IsAERainNukeSpell(mercSpellListItr->spellid)
+		if(IsAENukeSpell(mercSpellListItr->spellid) && !IsAERainNukeSpell(mercSpellListItr->spellid)
-				&& !IsPBAENukeSpell(mercSpellListItr->spellid) && CheckSpellRecastTimers(caster, mercSpellListItr->spellid)) {
+			&& !IsPBAENukeSpell(mercSpellListItr->spellid) && CheckSpellRecastTimers(caster, mercSpellListItr->spellid)) {
-					uint8 numTargets = 0;
+				uint8 numTargets = 0;
-					if(CheckAENuke(caster, tar, mercSpellListItr->spellid, numTargets)) {
+				if(CheckAENuke(caster, tar, mercSpellListItr->spellid, numTargets)) {
-						if(numTargets >= numTargetsCheck && zone->random.Roll(castChance)) {
+					if(numTargets >= numTargetsCheck && zone->random.Roll(castChance)) {
-							result.spellid = mercSpellListItr->spellid;
+						result.spellid = mercSpellListItr->spellid;
-							result.stance = mercSpellListItr->stance;
+						result.stance = mercSpellListItr->stance;
-							result.type = mercSpellListItr->type;
+						result.type = mercSpellListItr->type;
-							result.slot = mercSpellListItr->slot;
+						result.slot = mercSpellListItr->slot;
-							result.proc_chance = mercSpellListItr->proc_chance;
+						result.proc_chance = mercSpellListItr->proc_chance;
-							result.time_cancast = mercSpellListItr->time_cancast;
+						result.time_cancast = mercSpellListItr->time_cancast;
-						}
 					}
+				}
 
-					break;
+				break;
-			}
 		}
 	}
 
@@ -3313,6 +3315,10 @@ MercSpell Merc::GetBestMercSpellForPBAENuke(Merc* caster, Mob* tar) {
 	result.proc_chance = 0;
 	result.time_cancast = 0;
 
+	if (!caster) {
+		return result;
+	}
+
 	switch(caster->GetStance())
 	{
 	case EQ::constants::stanceBurnAE:
@@ -3324,27 +3330,25 @@ MercSpell Merc::GetBestMercSpellForPBAENuke(Merc* caster, Mob* tar) {
 		break;
 	}
 
-	if(caster) {
+	std::list<MercSpell> mercSpellList = GetMercSpellsBySpellType(caster, SpellType_Nuke);
-		std::list<MercSpell> mercSpellList = GetMercSpellsBySpellType(caster, SpellType_Nuke);
 
-		for (auto mercSpellListItr = mercSpellList.begin(); mercSpellListItr != mercSpellList.end();
+	for (auto mercSpellListItr = mercSpellList.begin(); mercSpellListItr != mercSpellList.end();
-		     ++mercSpellListItr) {
+		    ++mercSpellListItr) {
-			// Assuming all the spells have been loaded into this list by level and in descending order
+		// Assuming all the spells have been loaded into this list by level and in descending order
-			if(IsPBAENukeSpell(mercSpellListItr->spellid) && CheckSpellRecastTimers(caster, mercSpellListItr->spellid)) {
+		if(IsPBAENukeSpell(mercSpellListItr->spellid) && CheckSpellRecastTimers(caster, mercSpellListItr->spellid)) {
-				uint8 numTargets = 0;
+			uint8 numTargets = 0;
-				if(CheckAENuke(caster, caster, mercSpellListItr->spellid, numTargets)) {
+			if(CheckAENuke(caster, caster, mercSpellListItr->spellid, numTargets)) {
-					if(numTargets >= numTargetsCheck && zone->random.Roll(castChance)) {
+				if(numTargets >= numTargetsCheck && zone->random.Roll(castChance)) {
-						result.spellid = mercSpellListItr->spellid;
+					result.spellid = mercSpellListItr->spellid;
-						result.stance = mercSpellListItr->stance;
+					result.stance = mercSpellListItr->stance;
-						result.type = mercSpellListItr->type;
+					result.type = mercSpellListItr->type;
-						result.slot = mercSpellListItr->slot;
+					result.slot = mercSpellListItr->slot;
-						result.proc_chance = mercSpellListItr->proc_chance;
+					result.proc_chance = mercSpellListItr->proc_chance;
-						result.time_cancast = mercSpellListItr->time_cancast;
+					result.time_cancast = mercSpellListItr->time_cancast;
-					}
 				}
-
-				break;
 			}
+
+			break;
 		}
 	}
 
@@ -3364,6 +3368,10 @@ MercSpell Merc::GetBestMercSpellForAERainNuke(Merc* caster, Mob* tar) {
 	result.proc_chance = 0;
 	result.time_cancast = 0;
 
+	if (!caster) {
+		return result;
+	}
+
 	switch(caster->GetStance())
 	{
 	case EQ::constants::stanceBurnAE:
@@ -3375,27 +3383,25 @@ MercSpell Merc::GetBestMercSpellForAERainNuke(Merc* caster, Mob* tar) {
 		break;
 	}
 
-	if(caster) {
+	std::list<MercSpell> mercSpellList = GetMercSpellsBySpellType(caster, SpellType_Nuke);
-		std::list<MercSpell> mercSpellList = GetMercSpellsBySpellType(caster, SpellType_Nuke);
 
-		for (auto mercSpellListItr = mercSpellList.begin(); mercSpellListItr != mercSpellList.end();
+	for (auto mercSpellListItr = mercSpellList.begin(); mercSpellListItr != mercSpellList.end();
-		     ++mercSpellListItr) {
+		    ++mercSpellListItr) {
-			// Assuming all the spells have been loaded into this list by level and in descending order
+		// Assuming all the spells have been loaded into this list by level and in descending order
-			if(IsAERainNukeSpell(mercSpellListItr->spellid) && zone->random.Roll(castChance) && CheckSpellRecastTimers(caster, mercSpellListItr->spellid)) {
+		if(IsAERainNukeSpell(mercSpellListItr->spellid) && zone->random.Roll(castChance) && CheckSpellRecastTimers(caster, mercSpellListItr->spellid)) {
-				uint8 numTargets = 0;
+			uint8 numTargets = 0;
-				if(CheckAENuke(caster, tar, mercSpellListItr->spellid, numTargets)) {
+			if(CheckAENuke(caster, tar, mercSpellListItr->spellid, numTargets)) {
-					if(numTargets >= numTargetsCheck) {
+				if(numTargets >= numTargetsCheck) {
-						result.spellid = mercSpellListItr->spellid;
+					result.spellid = mercSpellListItr->spellid;
-						result.stance = mercSpellListItr->stance;
+					result.stance = mercSpellListItr->stance;
-						result.type = mercSpellListItr->type;
+					result.type = mercSpellListItr->type;
-						result.slot = mercSpellListItr->slot;
+					result.slot = mercSpellListItr->slot;
-						result.proc_chance = mercSpellListItr->proc_chance;
+					result.proc_chance = mercSpellListItr->proc_chance;
-						result.time_cancast = mercSpellListItr->time_cancast;
+					result.time_cancast = mercSpellListItr->time_cancast;
-					}
 				}
-
-				break;
 			}
+
+			break;
 		}
 	}
 
@@ -4302,7 +4308,12 @@ Merc* Merc::LoadMerc(Client *c, MercTemplate* merc_template, uint32 merchant_id,
 	if(merc_template)
 	{
 		//TODO: Maybe add a way of updating client merc stats in a seperate function? like, for example, on leveling up.
-		const NPCType* npc_type_to_copy = content_db.GetMercType(merc_template->MercNPCID, merc_template->RaceID, c->GetLevel());
+		
+		const NPCType* npc_type_to_copy = nullptr;
+		if (c) {
+			const NPCType* npc_type_to_copy = content_db.GetMercType(merc_template->MercNPCID, merc_template->RaceID, c->GetLevel());
+		}
+
 		if(npc_type_to_copy != nullptr)
 		{
 			//This is actually a very terrible method of assigning stats, and should be changed at some point. See the comment in merc's deconstructor.

zone/mob.cpp

@@ -5109,6 +5109,10 @@ void Mob::TarGlobal(const char *varname, const char *value, const char *duration
 
 void Mob::DelGlobal(const char *varname) {
 
+	if (!zone) {
+		return;
+	}
+
 	int qgZoneid=zone->GetZoneID();
 	int qgCharid=0;
 	int qgNpcid=0;
@@ -5129,22 +5133,19 @@ void Mob::DelGlobal(const char *varname) {
 
 	database.QueryDatabase(query);
 
-	if(zone)
+	auto pack = new ServerPacket(ServerOP_QGlobalDelete, sizeof(ServerQGlobalDelete_Struct));
-	{
+	ServerQGlobalDelete_Struct *qgu = (ServerQGlobalDelete_Struct*)pack->pBuffer;
-		auto pack = new ServerPacket(ServerOP_QGlobalDelete, sizeof(ServerQGlobalDelete_Struct));
-		ServerQGlobalDelete_Struct *qgu = (ServerQGlobalDelete_Struct*)pack->pBuffer;
 
-		qgu->npc_id = qgNpcid;
+	qgu->npc_id = qgNpcid;
-		qgu->char_id = qgCharid;
+	qgu->char_id = qgCharid;
-		qgu->zone_id = qgZoneid;
+	qgu->zone_id = qgZoneid;
-		strcpy(qgu->name, varname);
+	strcpy(qgu->name, varname);
 
-		entity_list.DeleteQGlobal(std::string((char*)qgu->name), qgu->npc_id, qgu->char_id, qgu->zone_id);
+	entity_list.DeleteQGlobal(std::string((char*)qgu->name), qgu->npc_id, qgu->char_id, qgu->zone_id);
-		zone->DeleteQGlobal(std::string((char*)qgu->name), qgu->npc_id, qgu->char_id, qgu->zone_id);
+	zone->DeleteQGlobal(std::string((char*)qgu->name), qgu->npc_id, qgu->char_id, qgu->zone_id);
 
-		worldserver.SendPacket(pack);
+	worldserver.SendPacket(pack);
-		safe_delete(pack);
+	safe_delete(pack);
-	}
 }
 
 // Inserts global variable into quest_globals table

zone/pets.cpp

@@ -445,7 +445,7 @@ Pet::Pet(NPCType *type_data, Mob *owner, PetType type, uint16 spell_id, int16 po
 	GiveNPCTypeData(type_data);
 	typeofpet = type;
 	petpower = power;
-	SetOwnerID(owner->GetID());
+	SetOwnerID(owner ? owner->GetID() : 0);
 	SetPetSpellID(spell_id);
 
 	// All pets start at false on newer clients. The client

zone/spawn2.cpp

@@ -150,7 +150,7 @@ bool Spawn2::Process() {
 	//grab our spawn group
 	SpawnGroup *spawn_group = zone->spawn_group_list.GetSpawnGroup(spawngroup_id_);
 
-	if (NPCPointerValid() && (spawn_group->despawn == 0 || condition_id != 0)) {
+	if (NPCPointerValid() && (spawn_group && spawn_group->despawn == 0 || condition_id != 0)) {
 		return true;
 	}
 

zone/spell_effects.cpp

@@ -147,9 +147,10 @@ bool Mob::SpellEffect(Mob* caster, uint16 spell_id, float partial, int level_ove
 		if (spells[spell_id].hit_number > 0) {
 
 			int numhit = spells[spell_id].hit_number;
-
+			if (caster) {
-			numhit += numhit * caster->GetFocusEffect(focusFcLimitUse, spell_id) / 100;
+				numhit += numhit * caster->GetFocusEffect(focusFcLimitUse, spell_id) / 100;
-			numhit += caster->GetFocusEffect(focusIncreaseNumHits, spell_id);
+				numhit += caster->GetFocusEffect(focusIncreaseNumHits, spell_id);
+			}
 			buffs[buffslot].hit_number = numhit;
 		}
 
@@ -262,7 +263,7 @@ bool Mob::SpellEffect(Mob* caster, uint16 spell_id, float partial, int level_ove
 				// SE_CurrentHP is calculated at first tick if its a dot/buff
 				if (buffslot >= 0) {
 					//This is here so dots with hit counters tic down on initial cast.
-					if (effect_value < 0) {
+					if (caster && effect_value < 0) {
 						caster->GetActDoTDamage(spell_id, effect_value, this, false);
 					}
 					break;
@@ -1766,7 +1767,7 @@ bool Mob::SpellEffect(Mob* caster, uint16 spell_id, float partial, int level_ove
 							gid = r->GetGroup(caster->GetName());
 							if(gid < 11)
 							{
-								if(r->GetGroup(TargetClient->GetName()) != gid) {
+								if (TargetClient && r->GetGroup(TargetClient->GetName()) != gid) {
 									Message(Chat::Red, "Your target must be a group member for this spell.");
 									break;
 								}
@@ -1817,7 +1818,7 @@ bool Mob::SpellEffect(Mob* caster, uint16 spell_id, float partial, int level_ove
 			{
 				if (IsClient()) {
 					Client* client_target = CastToClient();
-					if (client_target->IsGrouped()) {
+					if (client_target && client_target->IsGrouped()) {
 						Group* group = client_target->GetGroup();
 						if (!group->IsGroupMember(caster)) {
 							if (caster != this) {
@@ -1830,7 +1831,7 @@ bool Mob::SpellEffect(Mob* caster, uint16 spell_id, float partial, int level_ove
 							Raid *raid = caster->GetRaid();
 							uint32 group_id = raid->GetGroup(caster->GetName());
 							if (group_id > 0 && group_id < MAX_RAID_GROUPS) {
-								if (raid->GetGroup(client_target->GetName()) != group_id) {
+								if (client_target && raid->GetGroup(client_target->GetName()) != group_id) {
 									caster->MessageString(Chat::Red, SUMMON_ONLY_GROUP_CORPSE);
 									break;
 								}
@@ -2963,10 +2964,10 @@ bool Mob::SpellEffect(Mob* caster, uint16 spell_id, float partial, int level_ove
 				if (caster && !caster->IsClient())
 					break;
 
-				if (zone->random.Roll(spells[spell_id].base_value[i])) {
+				if (caster && zone->random.Roll(spells[spell_id].base_value[i])) {
 					uint32 best_spell_id = caster->CastToClient()->GetHighestScribedSpellinSpellGroup(spells[spell_id].limit_value[i]);
 
-					if (caster && IsValidSpell(best_spell_id))
+					if (IsValidSpell(best_spell_id))
 						caster->SpellFinished(best_spell_id, this, EQ::spells::CastingSlot::Item, 0, -1, spells[best_spell_id].resist_difficulty);
 				}
 				break;

zone/trap.cpp

@@ -209,8 +209,7 @@ void Trap::Trigger(Mob* trigger)
 			{
 				entity_list.MessageClose(trigger,false,100,13,"%s",message.c_str());
 			}
-			if(trigger->IsClient())
+			if (trigger && trigger->IsClient()) {
-			{
 				auto outapp = new EQApplicationPacket(OP_Damage, sizeof(CombatDamage_Struct));
 				CombatDamage_Struct* a = (CombatDamage_Struct*)outapp->pBuffer;
 				int64 dmg = zone->random.Int(effectvalue, effectvalue2);
@@ -226,8 +225,7 @@ void Trap::Trigger(Mob* trigger)
 			}
 	}
 
-	if (trigger && trigger->IsClient())
+	if (trigger && trigger->IsClient()) {
-	{
 		trigger->CastToClient()->trapid = trap_id;
 		charid = trigger->CastToClient()->CharacterID();
 	}

zone/zone.cpp

@@ -2027,13 +2027,12 @@ ZonePoint* Zone::GetClosestZonePoint(const glm::vec3& location, uint32 to, Clien
 
 	// if we have a water map and it says we're in a zoneline, lets assume it's just a really big zone line
 	// this shouldn't open up any exploits since those situations are detected later on
-	if ((zone->HasWaterMap() && !zone->watermap->InZoneLine(glm::vec3(client->GetPosition()))) || (!zone->HasWaterMap() && closest_dist > 400.0f && closest_dist < max_distance2))
+	if ((client && zone->HasWaterMap() && !zone->watermap->InZoneLine(glm::vec3(client->GetPosition()))) || (!zone->HasWaterMap() && closest_dist > 400.0f && closest_dist < max_distance2))
 	{
-		if (client) {
+		if (!client->cheat_manager.GetExemptStatus(Port)) {
-			if (!client->cheat_manager.GetExemptStatus(Port)) {
+			client->cheat_manager.CheatDetected(MQZoneUnknownDest, location);
-				client->cheat_manager.CheatDetected(MQZoneUnknownDest, location);
-			}
 		}
+
 		LogInfo("WARNING: Closest zone point for zone id [{}] is [{}], you might need to update your zone_points table if you dont arrive at the right spot", to, closest_dist);
 		LogInfo("<Real Zone Points>. [{}]", to_string(location).c_str());
 	}