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47 lines
1 KiB
Go
47 lines
1 KiB
Go
package shadowsocks
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import (
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"io"
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"github.com/sagernet/sing/common/buf"
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"github.com/sagernet/sing/common/exceptions"
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"github.com/sagernet/sing/common/list"
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)
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type Cipher interface {
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KeySize() int
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SaltSize() int
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CreateReader(key []byte, salt []byte, reader io.Reader) io.Reader
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CreateWriter(key []byte, salt []byte, writer io.Writer) io.Writer
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EncodePacket(key []byte, buffer *buf.Buffer) error
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DecodePacket(key []byte, buffer *buf.Buffer) error
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}
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type CipherCreator func() Cipher
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var (
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cipherList *list.List[string]
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cipherMap map[string]CipherCreator
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)
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func init() {
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cipherList = new(list.List[string])
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cipherMap = make(map[string]CipherCreator)
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}
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func RegisterCipher(method string, creator CipherCreator) {
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cipherList.PushBack(method)
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cipherMap[method] = creator
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}
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func CreateCipher(method string) (Cipher, error) {
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creator := cipherMap[method]
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if creator != nil {
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return creator(), nil
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}
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return nil, exceptions.New("unsupported method: ", method)
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}
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func ListCiphers() []string {
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return cipherList.Array()
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}
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