major rewrite

network/mhfpacket/msg_mhf_apply_campaign.go

@@ -2,18 +2,17 @@ package mhfpacket
 
 import (
 	"errors"
+	"erupe-ce/common/bfutil"
 	"erupe-ce/common/byteframe"
-	"erupe-ce/common/stringsupport"
 	"erupe-ce/network"
 	"erupe-ce/network/clientctx"
 )
 
 // MsgMhfApplyCampaign represents the MSG_MHF_APPLY_CAMPAIGN
 type MsgMhfApplyCampaign struct {
-	AckHandle   uint32
-	CampaignID  uint32
-	NullPadding uint16 // set as 0 in z2
-	CodeString  string
+	AckHandle  uint32
+	CampaignID uint32
+	Code       string
 }
 
 // Opcode returns the ID associated with this packet type.
@@ -25,9 +24,8 @@ func (m *MsgMhfApplyCampaign) Opcode() network.PacketID {
 func (m *MsgMhfApplyCampaign) Parse(bf *byteframe.ByteFrame, ctx *clientctx.ClientContext) error {
 	m.AckHandle = bf.ReadUint32()
 	m.CampaignID = bf.ReadUint32()
-	m.NullPadding = bf.ReadUint16()
-	m.CodeString = stringsupport.SJISToUTF8(bf.ReadNullTerminatedBytes())
-	bf.ReadInt8()
+	bf.ReadUint16() // Zeroed
+	m.Code = string(bfutil.UpToNull(bf.ReadBytes(16)))
 	return nil
 }