67 lines
1.4 KiB
Go
67 lines
1.4 KiB
Go
package tunnel
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import (
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"crypto/sha1"
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"github.com/pkg/errors"
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"github.com/xtaci/kcp-go/v5"
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"golang.org/x/crypto/pbkdf2"
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)
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type ClientConfig struct {
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ServerAddress string
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BlockCrypt kcp.BlockCrypt
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DataShards int
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ParityShards int
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Credentials interface{}
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ConfigureConn ConfigureConnFunc
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}
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func DefaultClientConfig() *ClientConfig {
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unencryptedBlock, err := kcp.NewNoneBlockCrypt(nil)
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if err != nil { // should never happen
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panic(errors.WithStack(err))
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}
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return &ClientConfig{
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ServerAddress: "127.0.0.1:36543",
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BlockCrypt: unencryptedBlock,
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DataShards: 3,
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ParityShards: 10,
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Credentials: nil,
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}
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}
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type ClientConfigFunc func(c *ClientConfig)
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func WithClientServerAddress(addr string) ClientConfigFunc {
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return func(conf *ClientConfig) {
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conf.ServerAddress = addr
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}
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}
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func WithClientCredentials(credentials interface{}) ClientConfigFunc {
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return func(conf *ClientConfig) {
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conf.Credentials = credentials
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}
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}
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func WithClientBlockCrypt(alg string, pass, salt string, iterations, keyLen int) ClientConfigFunc {
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return func(conf *ClientConfig) {
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key := pbkdf2.Key([]byte(pass), []byte(salt), iterations, keyLen, sha1.New)
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block, err := createBlockCrypt(alg, key)
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if err != nil {
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panic(errors.Wrap(err, "could not create block crypt"))
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}
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conf.BlockCrypt = block
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}
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}
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func WithClientConfigureConn(fn ConfigureConnFunc) ClientConfigFunc {
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return func(conf *ClientConfig) {
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conf.ConfigureConn = fn
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}
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}
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