Script/Commands: Add some sanity checks to cast commands

Closes #15061

(cherry picked from commit 15dec9a76ca56930c6764e8483cbf4ce8aae4f90)

1 files changed, 34 insertions, 57 deletions

diff --git a/src/server/scripts/Commands/cs_cast.cpp b/src/server/scripts/Commands/cs_cast.cpp
index 59c919abd2b..f45e73b7c58 100644
--- a/src/server/scripts/Commands/cs_cast.cpp
+++ b/src/server/scripts/Commands/cs_cast.cpp
@@ -51,6 +51,25 @@ public:
         return commandTable;
     }
 
+    static bool CheckSpellExistsAndIsValid(ChatHandler* handler, uint32 spellId)
+    {
+        SpellInfo const* spellInfo = sSpellMgr->GetSpellInfo(spellId);
+        if (!spellInfo)
+        {
+            handler->PSendSysMessage(LANG_COMMAND_NOSPELLFOUND);
+            handler->SetSentErrorMessage(true);
+            return false;
+        }
+
+        if (!SpellMgr::IsSpellValid(spellInfo, handler->GetSession()->GetPlayer()))
+        {
+            handler->PSendSysMessage(LANG_COMMAND_SPELL_BROKEN, spellId);
+            handler->SetSentErrorMessage(true);
+            return false;
+        }
+        return true;
+    }
+
     static bool HandleCastCommand(ChatHandler* handler, char const* args)
     {
         if (!*args)
@@ -69,20 +88,8 @@ public:
         if (!spellId)
             return false;
 
-        SpellInfo const* spellInfo = sSpellMgr->GetSpellInfo(spellId);
-        if (!spellInfo)
-        {
-            handler->PSendSysMessage(LANG_COMMAND_NOSPELLFOUND);
-            handler->SetSentErrorMessage(true);
+        if (!CheckSpellExistsAndIsValid(handler, spellId))
             return false;
-        }
-
-        if (!SpellMgr::IsSpellValid(spellInfo, handler->GetSession()->GetPlayer()))
-        {
-            handler->PSendSysMessage(LANG_COMMAND_SPELL_BROKEN, spellId);
-            handler->SetSentErrorMessage(true);
-            return false;
-        }
 
         char* triggeredStr = strtok(NULL, " ");
         if (triggeredStr)
@@ -109,15 +116,13 @@ public:
             return false;
         }
 
-        // number or [name] Shift-click form |color|Hspell:spell_id|h[name]|h|r
         // number or [name] Shift-click form |color|Hspell:spell_id|h[name]|h|r or Htalent form
         uint32 spellId = handler->extractSpellIdFromLink((char*)args);
-        if (!spellId || !sSpellMgr->GetSpellInfo(spellId))
-        {
-            handler->PSendSysMessage(LANG_COMMAND_NOSPELLFOUND);
-            handler->SetSentErrorMessage(true);
+        if (!spellId)
+            return false;
+            
+        if (!CheckSpellExistsAndIsValid(handler, spellId))
             return false;
-        }
 
         char* triggeredStr = strtok(NULL, " ");
         if (triggeredStr)
@@ -144,20 +149,8 @@ public:
         if (!spellId)
             return false;
 
-        SpellInfo const* spellInfo = sSpellMgr->GetSpellInfo(spellId);
-        if (!spellInfo)
-        {
-            handler->PSendSysMessage(LANG_COMMAND_NOSPELLFOUND);
-            handler->SetSentErrorMessage(true);
+        if (!CheckSpellExistsAndIsValid(handler, spellId))
             return false;
-        }
-
-        if (!SpellMgr::IsSpellValid(spellInfo, handler->GetSession()->GetPlayer()))
-        {
-            handler->PSendSysMessage(LANG_COMMAND_SPELL_BROKEN, spellId);
-            handler->SetSentErrorMessage(true);
-            return false;
-        }
 
         char* distStr = strtok(NULL, " ");
 
@@ -190,28 +183,14 @@ public:
             return false;
 
         Unit* target = handler->getSelectedUnit();
-        if (!target)
-        {
-            handler->SendSysMessage(LANG_SELECT_CHAR_OR_CREATURE);
-            handler->SetSentErrorMessage(true);
-            return false;
-        }
 
         // number or [name] Shift-click form |color|Hspell:spell_id|h[name]|h|r or Htalent form
         uint32 spellId = handler->extractSpellIdFromLink((char*)args);
         if (!spellId)
             return false;
 
-        SpellInfo const* spellInfo = sSpellMgr->GetSpellInfo(spellId);
-        if (!spellInfo)
-            return false;
-
-        if (!SpellMgr::IsSpellValid(spellInfo, handler->GetSession()->GetPlayer()))
-        {
-            handler->PSendSysMessage(LANG_COMMAND_SPELL_BROKEN, spellId);
-            handler->SetSentErrorMessage(true);
+        if (!CheckSpellExistsAndIsValid(handler, spellId))
             return false;
-        }
 
         target->CastSpell(target, spellId, false);
 
@@ -237,12 +216,11 @@ public:
 
         // number or [name] Shift-click form |color|Hspell:spell_id|h[name]|h|r or Htalent form
         uint32 spellId = handler->extractSpellIdFromLink((char*)args);
-        if (!spellId || !sSpellMgr->GetSpellInfo(spellId))
-        {
-            handler->PSendSysMessage(LANG_COMMAND_NOSPELLFOUND);
-            handler->SetSentErrorMessage(true);
+        if (!spellId)
+            return false;
+        
+        if (!CheckSpellExistsAndIsValid(handler, spellId))
             return false;
-        }
 
         char* triggeredStr = strtok(NULL, " ");
         if (triggeredStr)
@@ -271,12 +249,11 @@ public:
 
         // number or [name] Shift-click form |color|Hspell:spell_id|h[name]|h|r or Htalent form
         uint32 spellId = handler->extractSpellIdFromLink((char*)args);
-        if (!spellId || !sSpellMgr->GetSpellInfo(spellId))
-        {
-            handler->PSendSysMessage(LANG_COMMAND_NOSPELLFOUND);
-            handler->SetSentErrorMessage(true);
+        if (!spellId)
+            return false;
+            
+        if (!CheckSpellExistsAndIsValid(handler, spellId))
             return false;
-        }
 
         char* posX = strtok(NULL, " ");
         char* posY = strtok(NULL, " ");