tor

1 files changed, 87 insertions, 0 deletions

diff --git a/internal/tor/tor.go b/internal/tor/tor.go
new file mode 100644
index 0000000..18e5016
--- /dev/null
+++ b/internal/tor/tor.go
@@ -0,0 +1,87 @@
+package tor
+
+import (
+	"crypto/rsa"
+	"fmt"
+	"log"
+	"strconv"
+	"time"
+
+	"github.com/Yawning/bulb"
+	"github.com/phayes/freeport"
+	"github.com/sycamoreone/orc/tor"
+)
+
+// Config is a wrapper struct for tor configuration.
+type Config struct {
+	DataDir               string
+	HashedControlPassword string
+	ClearPassword         string
+	Timeout               time.Duration
+}
+
+// StartTor starts a new instance of tor or doesn't with the reason why.
+func StartTor(cfg Config) (*Tor, error) {
+	tc := tor.NewConfig()
+	tc.Set("DataDirectory", cfg.DataDir)
+	tc.Set("HashedControlPassword", cfg.HashedControlPassword)
+	tc.Set("SocksPort", "0")
+
+	port, err := freeport.GetFreePort()
+	if err != nil {
+		return nil, err
+	}
+
+	tc.Set("ControlPort", fmt.Sprint(port))
+
+	tc.Timeout = cfg.Timeout
+
+	tcmd, err := tor.NewCmd(tc)
+	if err != nil {
+		return nil, err
+	}
+
+	err = tcmd.Start()
+	if err != nil {
+		return nil, err
+	}
+
+	log.Println("tor started, sleeping for a few seconds for it to settle...")
+	time.Sleep(5 * time.Second)
+
+	bc, err := bulb.Dial("tcp", "127.0.0.1:"+strconv.Itoa(port))
+	if err != nil {
+		return nil, err
+	}
+
+	err = bc.Authenticate(cfg.ClearPassword)
+	if err != nil {
+		return nil, err
+	}
+
+	t := &Tor{
+		tc:   tc,
+		tcmd: tcmd,
+		bc:   bc,
+	}
+
+	return t, nil
+}
+
+// Tor is a higher level wrapper to a child tor process
+type Tor struct {
+	tc   *tor.Config
+	tcmd *tor.Cmd
+	bc   *bulb.Conn
+}
+
+// AddOnion adds an onion service to this machine with the given private key
+// (can be nil for an auto-generated key), virtual onion port and TCP destunation.
+func (t *Tor) AddOnion(pKey *rsa.PrivateKey, virtPort uint16, destination string) (*bulb.OnionInfo, error) {
+	return t.bc.AddOnion([]bulb.OnionPortSpec{
+		{
+			VirtPort: virtPort,
+			Target:   destination,
+		},
+	}, pKey, true)
+}