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fix(channelserver): correct ecdMagic constant byte order (#174)

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The constant used file-order bytes (0x6563641a) instead of the value
produced by binary.LittleEndian.Uint32 (0x1A646365), causing
loadRengokuBinary to reject every real ECD-encrypted rengoku_data.bin.
The unit tests masked this because they round-tripped with the same
wrong constant.
This commit is contained in:
Houmgaor
2026-03-03 18:23:45 +01:00
parent 8717fb9b55
commit 10ac803a45
1 changed files with 4 additions and 3 deletions
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7
server/channelserver/sys_channel_server.go
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@@ -445,8 +445,9 @@ func (s *Server) Season() uint8 {
return uint8(((TimeAdjusted().Unix() / secsPerDay) + sid) % 3)
}
// ecdMagic is the first 4 bytes of an ECD-encrypted file (little-endian "ecd\x1a").
const ecdMagic = uint32(0x6563641a)
// ecdMagic is the ECD magic as read by binary.LittleEndian.Uint32.
// On-disk bytes: 65 63 64 1A ("ecd\x1a"), LE-decoded: 0x1A646365.
const ecdMagic = uint32(0x1A646365)
// loadRengokuBinary reads and validates rengoku_data.bin from binPath.
// Returns the raw bytes on success, or nil if the file is missing or invalid.
@@ -465,7 +466,7 @@ func loadRengokuBinary(binPath string, logger *zap.Logger) []byte {
}
if magic := binary.LittleEndian.Uint32(data[:4]); magic != ecdMagic {
logger.Warn("rengoku_data.bin has invalid ECD magic, ignoring",
zap.String("expected", "0x6563641a"),
zap.String("expected", "0x1a646365"),
zap.String("got", fmt.Sprintf("0x%08x", magic)))
return nil
}