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74 lines
1.1 KiB
74 lines
1.1 KiB
package core
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import (
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"crypto/md5"
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"encoding/hex"
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"github.com/v2ray/v2ray-core/log"
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)
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const (
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IDBytesLen = 16
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)
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// The ID of en entity, in the form of an UUID.
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type ID struct {
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String string
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Bytes []byte
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cmdKey []byte
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}
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func NewID(id string) (ID, error) {
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idBytes, err := UUIDToID(id)
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if err != nil {
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return ID{}, log.Error("Failed to parse id %s", id)
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}
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md5hash := md5.New()
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md5hash.Write(idBytes)
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md5hash.Write([]byte("c48619fe-8f02-49e0-b9e9-edf763e17e21"))
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cmdKey := md5.Sum(nil)
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return ID{
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String: id,
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Bytes: idBytes,
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cmdKey: cmdKey[:],
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}, nil
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}
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func (v ID) CmdKey() []byte {
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return v.cmdKey
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}
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var byteGroups = []int{8, 4, 4, 4, 12}
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// TODO: leverage a full functional UUID library
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func UUIDToID(uuid string) (v []byte, err error) {
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v = make([]byte, 16)
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text := []byte(uuid)
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if len(text) < 32 {
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err = log.Error("uuid: invalid UUID string: %s", text)
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return
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}
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b := v[:]
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for _, byteGroup := range byteGroups {
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if text[0] == '-' {
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text = text[1:]
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}
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_, err = hex.Decode(b[:byteGroup/2], text[:byteGroup])
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if err != nil {
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return
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}
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text = text[byteGroup:]
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b = b[byteGroup/2:]
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}
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return
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}
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