From c73cf6b0199d7c2932d87ba76a56278f4da1beca Mon Sep 17 00:00:00 2001
From: Benjamin Jackson <38561765+heyitsbench@users.noreply.github.com>
Date: Mon, 9 Feb 2026 22:28:59 -0500
Subject: [PATCH] feat(Core/Handlers): Make use of a few billing plan flags for
 authentication response. (#24569)

Co-authored-by: Copilot <175728472+Copilot@users.noreply.github.com>
---
 src/server/game/Handlers/AuthHandler.cpp |  8 +++---
 src/server/game/Server/WorldSession.cpp  | 31 ++++++++++++++++++++++++
 src/server/game/Server/WorldSession.h    |  5 ++++
 src/server/game/World/World.h            | 12 ++++-----
 4 files changed, 46 insertions(+), 10 deletions(-)

diff --git a/src/server/game/Handlers/AuthHandler.cpp b/src/server/game/Handlers/AuthHandler.cpp
index 52dcffdec..99506a786 100644
--- a/src/server/game/Handlers/AuthHandler.cpp
+++ b/src/server/game/Handlers/AuthHandler.cpp
@@ -23,10 +23,10 @@ void WorldSession::SendAuthResponse(uint8 code, bool shortForm, uint32 queuePos)
 {
     WorldPacket packet(SMSG_AUTH_RESPONSE, 1 + 4 + 1 + 4 + 1 + (shortForm ? 0 : (4 + 1)));
     packet << uint8(code);
-    packet << uint32(0);                                   // BillingTimeRemaining
-    packet << uint8(0);                                    // BillingPlanFlags
-    packet << uint32(0);                                   // BillingTimeRested
-    uint8 exp = Expansion();                               // 0 - normal, 1 - TBC, 2 - WOTLK, must be set in database manually for each account
+    packet << uint32(0); // BillingTimeRemaining
+    packet << GetBillingPlanFlags();
+    packet << uint32(0); // BillingTimeRested
+    uint8 exp = Expansion(); // 0 - normal, 1 - TBC, 2 - WotLK, must be set in database manually for each account
 
     if (exp >= MAX_EXPANSIONS)
         exp = MAX_EXPANSIONS - 1;
diff --git a/src/server/game/Server/WorldSession.cpp b/src/server/game/Server/WorldSession.cpp
index 254328b80..208835067 100644
--- a/src/server/game/Server/WorldSession.cpp
+++ b/src/server/game/Server/WorldSession.cpp
@@ -208,6 +208,37 @@ bool WorldSession::IsGMAccount() const
     return GetSecurity() >= SEC_GAMEMASTER;
 }
 
+bool WorldSession::IsTrialAccount() const
+{
+    return HasAccountFlag(ACCOUNT_FLAG_TRIAL);
+}
+
+bool WorldSession::IsInternetGameRoomAccount() const
+{
+    return HasAccountFlag(ACCOUNT_FLAG_IGR);
+}
+
+bool WorldSession::IsRecurringBillingAccount() const
+{
+    return HasAccountFlag(ACCOUNT_FLAG_RECURRING_BILLING);
+}
+
+uint8 WorldSession::GetBillingPlanFlags() const
+{
+    uint8 flags = SESSION_NONE;
+
+    if (IsRecurringBillingAccount())
+        flags |= SESSION_RECURRING_BILL;
+
+    if (IsTrialAccount())
+        flags |= SESSION_FREE_TRIAL;
+
+    if (IsInternetGameRoomAccount())
+        flags |= SESSION_IGR;
+
+    return flags;
+}
+
 std::string const& WorldSession::GetPlayerName() const
 {
     return _player ? _player->GetName() : DefaultPlayerName;
diff --git a/src/server/game/Server/WorldSession.h b/src/server/game/Server/WorldSession.h
index 6a1c554ca..4a113d881 100644
--- a/src/server/game/Server/WorldSession.h
+++ b/src/server/game/Server/WorldSession.h
@@ -383,6 +383,11 @@ public:
     void ValidateAccountFlags();
 
     bool IsGMAccount() const;
+    bool IsTrialAccount() const;
+    bool IsInternetGameRoomAccount() const;
+    bool IsRecurringBillingAccount() const;
+
+    uint8 GetBillingPlanFlags() const;
 
     bool PlayerLoading() const { return m_playerLoading; }
     bool PlayerLogout() const { return m_playerLogout; }
diff --git a/src/server/game/World/World.h b/src/server/game/World/World.h
index 942665b4d..d792b4d8c 100644
--- a/src/server/game/World/World.h
+++ b/src/server/game/World/World.h
@@ -73,14 +73,14 @@ enum WorldTimers
 enum BillingPlanFlags
 {
     SESSION_NONE            = 0x00,
-    SESSION_UNUSED          = 0x01,
+    SESSION_UNUSED          = 0x01, // Unk, NYI
     SESSION_RECURRING_BILL  = 0x02,
     SESSION_FREE_TRIAL      = 0x04,
-    SESSION_IGR             = 0x08,
-    SESSION_USAGE           = 0x10,
-    SESSION_TIME_MIXTURE    = 0x20,
-    SESSION_RESTRICTED      = 0x40,
-    SESSION_ENABLE_CAIS     = 0x80,
+    SESSION_IGR             = 0x08, // Internet Game Room
+    SESSION_USAGE           = 0x10, // Unk, NYI
+    SESSION_TIME_MIXTURE    = 0x20, // Unk, NYI
+    SESSION_RESTRICTED      = 0x40, // Unk, NYI
+    SESSION_ENABLE_CAIS     = 0x80, // Unk, NYI, possibly account play time limit related for China?
 };
 
 enum RealmZone