Beginnings of the sync binary

cmd/lnd-verifier/main.go

@@ -0,0 +1,88 @@
+package main
+
+import (
+	"context"
+	b64 "encoding/base64"
+	"encoding/hex"
+	"fmt"
+
+	"git.minhas.io/asara/well-goknown/config"
+	"git.minhas.io/asara/well-goknown/logger"
+	"git.minhas.io/asara/well-goknown/redis"
+	"github.com/davecgh/go-spew/spew"
+	"github.com/lightninglabs/lndclient"
+	"github.com/lightningnetwork/lnd/lnrpc"
+	"google.golang.org/grpc/codes"
+	"google.golang.org/grpc/status"
+)
+
+func main() {
+	var err error
+	ctx := context.TODO()
+	l := logger.Get()
+	redis.NostrRedisConn, err = redis.New("localhost:6379", "", redis.NostrKeyspace)
+	if err != nil {
+		l.Fatal().Msg("unable to connect to redis")
+	}
+	redis.LndRedisConn, err = redis.New("localhost:6379", "", redis.LndKeyspace)
+	if err != nil {
+		l.Fatal().Msg("unable to connect to redis")
+	}
+	/*
+		// Test to add requests directly to nostr for easy bootstrap/general laziness
+		nostrTest := nostr.NostrRequest{
+			Name:     "asara",
+			Key:      "npub180cvv07tjdrrgpa0j7j7tmnyl2yr6yr7l8j4s3evf6u64th6gkwsyjh6w6",
+			Hostname: "devvul.com",
+		}
+		nostr.AddNostrAddr(nostrTest)
+	*/
+
+	macaroon := config.GetConfig().LndMacaroonHex
+	addr := config.GetConfig().LndAddr
+	dec, _ := b64.StdEncoding.DecodeString(config.GetConfig().LndCertB64)
+	lndCert := string(dec)
+	lndCli, err := lndclient.NewBasicClient(addr, "", "", "bitcoind", lndclient.MacaroonData(macaroon), lndclient.TLSData(lndCert))
+	if err != nil {
+		l.Fatal().Msg("unable to connect to lnd")
+	}
+
+	// get requested keys
+	lndRedisCli := redis.LndRedisConn.Client
+	//nostrRedisCli := redis.NostrRedisConn.Client
+
+	requestedKeys := lndRedisCli.Keys(ctx, "requested:*")
+	for _, key := range requestedKeys.Val() {
+		value, err := lndRedisCli.Get(ctx, key).Result()
+		if err != nil {
+			l.Error().Msg(fmt.Sprintf("%s: unable to get key", key))
+		}
+		rHash, err := hex.DecodeString(value)
+		if err != nil {
+			l.Error().Msg(fmt.Sprintf("%s: unable to decode hash for key", key))
+		}
+
+		invoice, err := lndCli.LookupInvoice(ctx, &lnrpc.PaymentHash{
+			RHash: rHash,
+		})
+		if err != nil {
+			switch status.Code(err) {
+			case codes.NotFound:
+				l.Error().Msg(fmt.Sprintf("%s: expired", key))
+				continue
+			default:
+				l.Error().Msg(fmt.Sprintf("%s: unknown error", key))
+				continue
+			}
+		}
+
+		if invoice.Settled {
+			// move requested to verified on nostr redis keyspace
+			// delete current key
+			continue
+		}
+		spew.Dump(invoice)
+		spew.Dump(key)
+		spew.Dump(value)
+	}
+}

lnd/lnd.go

@@ -7,7 +7,6 @@ import (
 	"errors"
 	"fmt"
 	"strconv"
-	"time"
 
 	"git.minhas.io/asara/well-goknown/config"
 	"git.minhas.io/asara/well-goknown/logger"
@@ -37,21 +36,25 @@ func Request(rKey string) (string, error) {
 		return "", errors.New("internal server error")
 	}
 
-	info, err := lndCli.AddInvoice(ctx, &lnrpc.Invoice{
+	expiryInMin := int64(5)
+	invoice, err := lndCli.AddInvoice(ctx, &lnrpc.Invoice{
 		Memo:   fmt.Sprintf("nostr addr %s", rKey),
-		Expiry: 1 * 60,
+		Expiry: expiryInMin * 60,
 		Value:  addrFee,
 	})
 	if err != nil {
 		l.Fatal().Msg("unable to create lnd invoice")
 		return "", errors.New("internal server error")
 	}
-	rHash := hex.EncodeToString(info.RHash)
+
-	paymentReq := info.PaymentRequest
+	// add a minute to the expiry time to ensure entries aren't removed from redis before they are expired
+
+	paymentReq := invoice.PaymentRequest
+	rHash := hex.EncodeToString(invoice.RHash)
 
 	// write lnd request to redis
 	redisCli := redis.LndRedisConn.Client
-	err = redisCli.Set(ctx, rKey, fmt.Sprintf("%s:%s", rHash, paymentReq), 15*time.Minute).Err()
+	err = redisCli.Set(ctx, rKey, rHash, 0).Err()
 	if err != nil {
 		l.Error().Msg("unable to connect to redis when writing lnd request")
 		return "", errors.New("unable to make the request, please try again")

main.go

@@ -22,14 +22,7 @@ func main() {
 	if err != nil {
 		l.Fatal().Msg("unable to connect to redis")
 	}
-	/*
+
-		nostrTest := nostr.NostrRequest{
-			Name:     "asara",
-			Key:      "npub180cvv07tjdrrgpa0j7j7tmnyl2yr6yr7l8j4s3evf6u64th6gkwsyjh6w6",
-			Hostname: "devvul.com",
-		}
-		nostr.AddNostrAddr(nostrTest)
-	*/
 	// matrix endpoints
 	l.Debug().Msg("enabling matrix server endpoint")
 	http.HandleFunc("/.well-known/matrix/server", matrix.MatrixServer)

nostr/nostr.go

@@ -9,7 +9,6 @@ import (
 	"html/template"
 	"net/http"
 	"strings"
-	"time"
 
 	"git.minhas.io/asara/well-goknown/lnd"
 	"git.minhas.io/asara/well-goknown/logger"
@@ -44,6 +43,7 @@ func RequestNostrAddr(w http.ResponseWriter, r *http.Request) {
 	l := logger.Get()
 	switch r.Method {
 	case "GET":
+		w.WriteHeader(http.StatusOK)
 		http.ServeFile(w, r, "html/nostr_form.html")
 	case "POST":
 		r.ParseForm()
@@ -108,9 +108,14 @@ func RequestNostrAddr(w http.ResponseWriter, r *http.Request) {
 		pngB64 := b64.StdEncoding.EncodeToString(png)
 
 		// write request to redis
-		err = redisCli.Set(ctx, rKey, enc, 15*time.Minute).Err()
+		err = redisCli.Set(ctx, rKey, enc, 0).Err()
 		if err != nil {
 			l.Error().Msg("unable to connect to redis")
+			w.WriteHeader(http.StatusServiceUnavailable)
+			json.NewEncoder(w).Encode(&jsonErrorMessage{
+				Error: "service unavailable",
+			})
+			return
 		}
 
 		// return qr code
@@ -122,12 +127,20 @@ func RequestNostrAddr(w http.ResponseWriter, r *http.Request) {
 		tmplt, err := template.ParseFiles("html/nostr_qr_response.html")
 		if err != nil {
 			l.Error().Msg("unable to parse template")
+			w.WriteHeader(http.StatusServiceUnavailable)
+			json.NewEncoder(w).Encode(&jsonErrorMessage{
+				Error: "service unavailable",
+			})
+			return
 		}
-		w.Header().Set("Content-Type", "text/html")
-		w.WriteHeader(http.StatusOK)
 		err = tmplt.Execute(w, response)
 		if err != nil {
 			l.Error().Msg("unable to connect to render template")
+			w.WriteHeader(http.StatusServiceUnavailable)
+			json.NewEncoder(w).Encode(&jsonErrorMessage{
+				Error: "service unavailable",
+			})
+			return
 		}
 		return
 	}