add b64 (base64) hook

1 files changed, 52 insertions, 0 deletions

diff --git a/pkg/server/hook/b64.go b/pkg/server/hook/b64.go
new file mode 100644
index 0000000..3c21474
--- /dev/null
+++ b/pkg/server/hook/b64.go
@@ -0,0 +1,52 @@
+package hook
+
+import (
+	"encoding/base64"
+	"tunnel/pkg/netstring"
+	"tunnel/pkg/server/env"
+	"tunnel/pkg/server/opts"
+	"tunnel/pkg/server/queue"
+)
+
+var b64Enc = base64.RawStdEncoding
+
+type b64Hook struct{}
+
+func (b64Hook) Send(rq, wq queue.Q) error {
+	e := netstring.NewEncoder(wq.Writer())
+
+	for b := range rq {
+		e.Encode(b64Enc.EncodeToString(b))
+	}
+
+	return nil
+}
+
+func (b64Hook) Recv(rq, wq queue.Q) error {
+	d := netstring.NewDecoder(rq.Reader())
+
+	for {
+		s, err := d.Decode()
+		if err != nil {
+			return err
+		}
+
+		if b, err := b64Enc.DecodeString(s); err != nil {
+			return err
+		} else {
+			wq <- b
+		}
+	}
+}
+
+func (h b64Hook) Open(env.Env) (interface{}, error) {
+	return h, nil
+}
+
+func newB64Hook(opts.Opts, env.Env) (hook, error) {
+	return b64Hook{}, nil
+}
+
+func init() {
+	register("b64", newB64Hook)
+}