cmd/loop: add command to list tokens

Author: guggero

cmd/loop/lsat.go

@@ -0,0 +1,82 @@
+package main
+
+import (
+	"bytes"
+	"context"
+	"encoding/hex"
+	"fmt"
+	"time"
+
+	"github.com/lightninglabs/loop/looprpc"
+	"github.com/lightninglabs/loop/lsat"
+	"github.com/urfave/cli"
+	"gopkg.in/macaroon.v2"
+)
+
+type printableToken struct {
+	ID              string `json:"id"`
+	ValidUntil      string `json:"valid_until"`
+	BaseMacaroon    string `json:"base_macaroon"`
+	PaymentHash     string `json:"payment_hash"`
+	PaymentPreimage string `json:"payment_preimage"`
+	AmountPaid      int64  `json:"amount_paid_msat"`
+	RoutingFeePaid  int64  `json:"routing_fee_paid_msat"`
+	TimeCreated     string `json:"time_created"`
+	Expired         bool   `json:"expired"`
+	FileName        string `json:"file_name"`
+}
+
+var listAuthCommand = cli.Command{
+	Name:        "listauth",
+	Usage:       "list all LSAT tokens",
+	Description: "Shows a list of all LSAT tokens that loopd has paid for",
+	Action:      listAuth,
+}
+
+func listAuth(ctx *cli.Context) error {
+	client, cleanup, err := getClient(ctx)
+	if err != nil {
+		return err
+	}
+	defer cleanup()
+
+	resp, err := client.GetLsatTokens(
+		context.Background(), &looprpc.TokensRequest{},
+	)
+	if err != nil {
+		return err
+	}
+
+	tokens := make([]*printableToken, len(resp.Tokens))
+	for i, t := range resp.Tokens {
+
+		mac := &macaroon.Macaroon{}
+		err := mac.UnmarshalBinary(t.BaseMacaroon)
+		if err != nil {
+			return fmt.Errorf("unable to unmarshal macaroon: %v",
+				err)
+		}
+		id, err := lsat.DecodeIdentifier(bytes.NewReader(mac.Id()))
+		if err != nil {
+			return fmt.Errorf("unable to decode macaroon ID: %v",
+				err)
+		}
+		tokens[i] = &printableToken{
+			ID:              hex.EncodeToString(id.TokenID[:]),
+			ValidUntil:      "",
+			BaseMacaroon:    hex.EncodeToString(t.BaseMacaroon),
+			PaymentHash:     hex.EncodeToString(t.PaymentHash),
+			PaymentPreimage: hex.EncodeToString(t.PaymentPreimage),
+			AmountPaid:      t.AmountPaidMsat,
+			RoutingFeePaid:  t.RoutingFeePaidMsat,
+			TimeCreated: time.Unix(t.TimeCreated, 0).Format(
+				time.RFC3339,
+			),
+			Expired:  t.Expired,
+			FileName: t.StorageName,
+		}
+	}
+
+	printJSON(tokens)
+	return nil
+}

cmd/loop/main.go

@@ -1,6 +1,8 @@
 package main
 
 import (
+	"bytes"
+	"encoding/json"
 	"errors"
 	"fmt"
 	"os"
@@ -30,6 +32,21 @@ var (
 	defaultSwapWaitTime = 30 * time.Minute
 )
 
+func printJSON(resp interface{}) {
+	b, err := json.Marshal(resp)
+	if err != nil {
+		fatal(err)
+	}
+
+	var out bytes.Buffer
+	err = json.Indent(&out, b, "", "\t")
+	if err != nil {
+		fatal(err)
+	}
+	out.WriteString("\n")
+	_, _ = out.WriteTo(os.Stdout)
+}
+
 func printRespJSON(resp proto.Message) {
 	jsonMarshaler := &jsonpb.Marshaler{
 		EmitDefaults: true,
@@ -65,7 +82,7 @@ func main() {
 	}
 	app.Commands = []cli.Command{
 		loopOutCommand, loopInCommand, termsCommand,
-		monitorCommand, quoteCommand,
+		monitorCommand, quoteCommand, listAuthCommand,
 	}
 
 	err := app.Run(os.Args)