Core/Spells: Prevent manual cancelling of channelled spells that have SPELL_ATTR0_CANT_CANCEL

(cherry picked from commit dacb1e58025b69f61a965a78ffbe89c55a61e34b)

1 files changed, 13 insertions, 1 deletions

diff --git a/src/server/game/Handlers/SpellHandler.cpp b/src/server/game/Handlers/SpellHandler.cpp
index f66902f92f9..6597bb8dd98 100644
--- a/src/server/game/Handlers/SpellHandler.cpp
+++ b/src/server/game/Handlers/SpellHandler.cpp
@@ -457,13 +457,25 @@ void WorldSession::HandleCancelAutoRepeatSpellOpcode(WorldPackets::Spells::Cance
     _player->InterruptSpell(CURRENT_AUTOREPEAT_SPELL);
 }
 
-void WorldSession::HandleCancelChanneling(WorldPackets::Spells::CancelChannelling& /*cancelChanneling*/)
+void WorldSession::HandleCancelChanneling(WorldPackets::Spells::CancelChannelling& cancelChanneling)
 {
     // ignore for remote control state (for player case)
     Unit* mover = _player->GetUnitBeingMoved();
     if (mover != _player && mover->GetTypeId() == TYPEID_PLAYER)
         return;
 
+    SpellInfo const* spellInfo = sSpellMgr->GetSpellInfo(cancelChanneling.ChannelSpell, mover->GetMap()->GetDifficultyID());
+    if (!spellInfo)
+        return;
+
+    // not allow remove spells with attr SPELL_ATTR0_CANT_CANCEL
+    if (spellInfo->HasAttribute(SPELL_ATTR0_CANT_CANCEL))
+        return;
+
+    Spell* spell = mover->GetCurrentSpell(CURRENT_CHANNELED_SPELL);
+    if (!spell || spell->GetSpellInfo()->Id != spellInfo->Id)
+        return;
+
     mover->InterruptSpell(CURRENT_CHANNELED_SPELL);
 }