mirror of
https://github.com/Mezeporta/Erupe.git
synced 2025-12-13 23:44:52 +01:00
feature: JPK encryption and databased events
This commit is contained in:
Matthe815
@@ -1,14 +1,17 @@
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package channelserver
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import (
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"database/sql"
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"erupe-ce/common/byteframe"
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"erupe-ce/common/decryption"
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"erupe-ce/network/mhfpacket"
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"fmt"
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"go.uber.org/zap"
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"io"
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"os"
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"path/filepath"
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"time"
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"go.uber.org/zap"
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)
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func handleMsgSysGetFile(s *Session, p mhfpacket.MHFPacket) {
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@@ -79,34 +82,170 @@ func handleMsgMhfSaveFavoriteQuest(s *Session, p mhfpacket.MHFPacket) {
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doAckSimpleSucceed(s, pkt.AckHandle, []byte{0x00, 0x00, 0x00, 0x00})
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}
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func readOriginalPointers(string_pointer int32, quest []byte) []byte {
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file_bytes := byteframe.NewByteFrameFromBytes(quest)
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file_bytes.SetLE()
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file_bytes.Seek(int64(string_pointer), io.SeekStart)
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quest_name_pointer := file_bytes.ReadInt32()
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quest_main_pointer := file_bytes.ReadInt32()
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quest_a_pointer := file_bytes.ReadInt32()
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quest_b_pointer := file_bytes.ReadInt32()
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quest_clear_pointer := file_bytes.ReadInt32()
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quest_failure_pointer := file_bytes.ReadInt32()
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quest_contractor_pointer := file_bytes.ReadInt32()
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quest_description_pointer := file_bytes.ReadInt32()
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//Use String header pointers to seek to string and then read null terminated string
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file_bytes.Seek(int64(quest_name_pointer), io.SeekStart)
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quest_name_string := file_bytes.ReadNullTerminatedBytes()
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file_bytes.Seek(int64(quest_main_pointer), io.SeekStart)
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quest_main_string := file_bytes.ReadNullTerminatedBytes()
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file_bytes.Seek(int64(quest_a_pointer), io.SeekStart)
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quest_a_string := file_bytes.ReadNullTerminatedBytes()
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file_bytes.Seek(int64(quest_b_pointer), io.SeekStart)
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quest_b_string := file_bytes.ReadNullTerminatedBytes()
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file_bytes.Seek(int64(quest_clear_pointer), io.SeekStart)
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quest_clear_string := file_bytes.ReadNullTerminatedBytes()
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file_bytes.Seek(int64(quest_failure_pointer), io.SeekStart)
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quest_failure_string := file_bytes.ReadNullTerminatedBytes()
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file_bytes.Seek(int64(quest_contractor_pointer), io.SeekStart)
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quest_contractor_string := file_bytes.ReadNullTerminatedBytes()
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file_bytes.Seek(int64(quest_description_pointer), io.SeekStart)
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quest_description_string := file_bytes.ReadNullTerminatedBytes()
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new_pointers := byteframe.NewByteFrame()
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new_pointers.SetLE()
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pointer_start := 352
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new_pointers.WriteInt32(int32(pointer_start))
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new_pointers.WriteInt32(int32(pointer_start + len(quest_name_string) + 1))
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new_pointers.WriteInt32(int32(pointer_start + len(quest_name_string) + len(quest_main_string) + 2))
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new_pointers.WriteInt32(int32(pointer_start + len(quest_name_string) + len(quest_main_string) + len(quest_a_string) + 3))
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new_pointers.WriteInt32(int32(pointer_start + len(quest_name_string) + len(quest_main_string) + len(quest_a_string) + len(quest_b_string) + 26))
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new_pointers.WriteInt32(int32(pointer_start + len(quest_name_string) + len(quest_main_string) + len(quest_a_string) + len(quest_b_string) + len(quest_clear_string) + 5))
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new_pointers.WriteInt32(int32(pointer_start + len(quest_name_string) + len(quest_main_string) + len(quest_a_string) + len(quest_b_string) + len(quest_clear_string) + len(quest_failure_string) + 6))
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new_pointers.WriteInt32(int32(pointer_start + len(quest_name_string) + len(quest_main_string) + len(quest_a_string) + len(quest_b_string) + len(quest_clear_string) + len(quest_failure_string) + len(quest_contractor_string) + 7))
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new_pointers.WriteNullTerminatedBytes(quest_name_string)
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new_pointers.WriteNullTerminatedBytes(quest_main_string)
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new_pointers.WriteNullTerminatedBytes(quest_a_string)
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new_pointers.WriteNullTerminatedBytes(quest_b_string)
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new_pointers.WriteNullTerminatedBytes(quest_clear_string)
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new_pointers.WriteNullTerminatedBytes(quest_failure_string)
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new_pointers.WriteNullTerminatedBytes(quest_contractor_string)
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new_pointers.WriteNullTerminatedBytes(quest_description_string)
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new_pointers.WriteUint8(18)
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new_pointers.WriteBytes([]byte{0x83, 0x59, 0x89, 0x5B, 0x83, 0x3A, 0x58, 0xB6, 0x8E, 0x59, 0x82, 0xCC, 0x83, 0x58, 0x83, 0x58, 0x83, 0x81})
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return new_pointers.Data()
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}
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func loadQuestFile(s *Session, quest_id string) []byte {
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file, err := os.ReadFile(filepath.Join(s.server.erupeConfig.BinPath, fmt.Sprintf("quests/%s.bin", quest_id)))
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if err != nil {
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s.logger.Error(fmt.Sprintf("Failed to open file: %s/quests/%s.bin", s.server.erupeConfig.BinPath, quest_id))
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return nil
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}
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println(fmt.Sprintf("quests/%s.bin", quest_id))
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decrypted := decryption.UnpackSimple(file)
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os.WriteFile(fmt.Sprintf("%s.bin", quest_id), decrypted, 0644)
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println("Reading quest file " + quest_id)
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file_bytes := byteframe.NewByteFrameFromBytes(decrypted)
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file_bytes.SetLE()
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file_bytes.Seek(0, io.SeekStart)
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data_pointer := file_bytes.ReadInt32()
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file_bytes.Seek(int64(data_pointer), io.SeekStart)
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// Read the quest data.
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quest_body := file_bytes.ReadBytes(320)
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quest_pointer := byteframe.NewByteFrameFromBytes(quest_body)
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quest_pointer.SetLE()
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quest_pointer.Seek(40, io.SeekStart)
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string_pointer := quest_pointer.ReadInt32()
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strings := readOriginalPointers(string_pointer, decrypted)
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body := byteframe.NewByteFrame()
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body.WriteBytes(quest_body)
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body.Seek(0, io.SeekEnd)
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body.WriteBytes(strings)
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return body.Data()
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}
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func makeEventQuest(s *Session, rows *sql.Rows) ([]byte, error) {
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var id int32
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var max_players, quest_type, quest_id uint16
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rows.Scan(&id, &max_players, &quest_type, &quest_id)
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bf := byteframe.NewByteFrame()
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bf.SetLE()
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bf.WriteInt32(id)
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bf.WriteInt32(0)
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bf.WriteBytes([]byte{0x0F, byte(max_players), byte(quest_type), 0x01})
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bf.WriteUint16(0)
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bf.WriteUint16(0)
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bf.WriteBytes([]byte{0x00, 0x01})
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bf.WriteUint16(0)
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bf.WriteBytes([]byte{0x02, 0x00})
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data := loadQuestFile(s, fmt.Sprintf("%d", quest_id)+"d0")
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if data == nil {
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return nil, fmt.Errorf("failed to load quest file")
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}
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bf.WriteBytes(data)
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// update checksum
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bf.Seek(21, io.SeekStart)
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bf.WriteUint8(uint8(len(bf.Data()) - 553))
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// overwrite bytes at pos 62
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bf.Seek(62, io.SeekStart)
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bf.WriteInt16(320)
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return bf.Data(), nil
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}
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func handleMsgMhfEnumerateQuest(s *Session, p mhfpacket.MHFPacket) {
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pkt := p.(*mhfpacket.MsgMhfEnumerateQuest)
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var totalCount, returnedCount uint16
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bf := byteframe.NewByteFrame()
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bf.WriteUint16(0)
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filepath.Walk(fmt.Sprintf("%s/events/", s.server.erupeConfig.BinPath), func(path string, info os.FileInfo, err error) error {
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rows, _ := s.server.db.Query("SELECT id, max_players, quest_type, quest_id FROM event_quests ORDER BY quest_id ASC")
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// Loop through each row and load the quest entry if it exists.
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for rows.Next() {
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var pointer []byte
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var max_players, quest_type, checksum, quest_id uint16
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rows.Scan(&pointer, &max_players, &quest_type, &checksum, &quest_id)
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data, err := makeEventQuest(s, rows)
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if err != nil {
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return err
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} else if info.IsDir() {
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return nil
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}
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data, err := os.ReadFile(path)
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if err != nil {
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return err
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continue
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} else {
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if len(data) > 850 || len(data) < 400 {
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return nil // Could be more or less strict with size limits
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continue
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} else {
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totalCount++
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if totalCount > pkt.Offset && len(bf.Data()) < 60000 {
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returnedCount++
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bf.WriteBytes(data)
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return nil
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continue
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}
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}
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}
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return nil
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})
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}
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type tuneValue struct {
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ID uint16
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@@ -549,6 +688,7 @@ func handleMsgMhfEnumerateQuest(s *Session, p mhfpacket.MHFPacket) {
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bf.WriteUint16(pkt.Offset)
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bf.Seek(0, io.SeekStart)
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bf.WriteUint16(returnedCount)
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doAckBufSucceed(s, pkt.AckHandle, bf.Data())
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}
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