create RNG in token module

server/channelserver/handlers_cast_binary.go

@@ -4,13 +4,13 @@ import (
 	"encoding/hex"
 	"erupe-ce/common/byteframe"
 	"erupe-ce/common/mhfcourse"
+	"erupe-ce/common/token"
 	"erupe-ce/config"
 	"erupe-ce/network/binpacket"
 	"erupe-ce/network/mhfpacket"
 	"fmt"
 	"golang.org/x/exp/slices"
 	"math"
-	"math/rand"
 	"strings"
 	"time"
 
@@ -370,8 +370,7 @@ func handleMsgSysCastBinary(s *Session, p mhfpacket.MHFPacket) {
 			roll.SetLE()
 			roll.WriteUint16(4) // Unk
 			roll.WriteUint16(authorLen)
-			rand.Seed(time.Now().UnixNano())
-			dice := fmt.Sprintf("%d", rand.Intn(100)+1)
+			dice := fmt.Sprintf("%d", token.RNG().Intn(100)+1)
 			roll.WriteUint16(uint16(len(dice) + 1))
 			roll.WriteNullTerminatedBytes([]byte(dice))
 			roll.WriteNullTerminatedBytes(tmp.ReadNullTerminatedBytes())

server/channelserver/handlers_event.go

@@ -1,8 +1,8 @@
 package channelserver
 
 import (
+	"erupe-ce/common/token"
 	"math"
-	"math/rand"
 	"time"
 
 	"erupe-ce/common/byteframe"
@@ -95,9 +95,9 @@ func generateFeatureWeapons(count int) activeFeature {
 	}
 	nums := make([]int, 0)
 	var result int
-	r := rand.New(rand.NewSource(time.Now().UnixNano()))
+	rng := token.RNG()
 	for len(nums) < count {
-		num := r.Intn(14)
+		num := rng.Intn(14)
 		exist := false
 		for _, v := range nums {
 			if v == num {

server/channelserver/handlers_festa.go

@@ -4,8 +4,8 @@ import (
 	"encoding/hex"
 	"erupe-ce/common/byteframe"
 	ps "erupe-ce/common/pascalstring"
+	"erupe-ce/common/token"
 	"erupe-ce/network/mhfpacket"
-	"math/rand"
 	"sort"
 	"time"
 )
@@ -336,8 +336,7 @@ func handleMsgMhfEntryFesta(s *Session, p mhfpacket.MHFPacket) {
 		doAckSimpleFail(s, pkt.AckHandle, make([]byte, 4))
 		return
 	}
-	rand.Seed(time.Now().UnixNano())
-	team := uint32(rand.Intn(2))
+	team := uint32(token.RNG().Intn(2))
 	switch team {
 	case 0:
 		s.server.db.Exec("INSERT INTO festa_registrations VALUES ($1, 'blue')", guild.ID)