nip46: support nip05 identifier in client.

nip05/nip05.go

@@ -2,7 +2,6 @@ package nip05
 
 import (
 	"context"
-	"encoding/hex"
 	"encoding/json"
 	"fmt"
 	"net/http"
@@ -18,9 +17,31 @@ type WellKnownResponse struct {
 }
 
 func QueryIdentifier(ctx context.Context, fullname string) (*nostr.ProfilePointer, error) {
+	result, name, err := Fetch(ctx, fullname)
+	if err != nil {
+		return nil, err
+	}
+
+	pubkey, ok := result.Names[name]
+	if !ok {
+		return nil, fmt.Errorf("no entry for name '%s'", name)
+	}
+
+	if !nostr.IsValidPublicKey(pubkey) {
+		return nil, fmt.Errorf("got an invalid public key '%s'", pubkey)
+	}
+
+	relays, _ := result.Relays[pubkey]
+	return &nostr.ProfilePointer{
+		PublicKey: pubkey,
+		Relays:    relays,
+	}, nil
+}
+
+func Fetch(ctx context.Context, fullname string) (resp WellKnownResponse, name string, err error) {
 	spl := strings.Split(fullname, "@")
 
-	var name, domain string
+	var domain string
 	switch len(spl) {
 	case 1:
 		name = "_"
@@ -29,17 +50,13 @@ func QueryIdentifier(ctx context.Context, fullname string) (*nostr.ProfilePointe
 		name = spl[0]
 		domain = spl[1]
 	default:
-		return nil, fmt.Errorf("not a valid nip-05 identifier")
-	}
-
-	if strings.Index(domain, ".") == -1 {
-		return nil, fmt.Errorf("hostname doesn't have a dot")
+		return resp, name, fmt.Errorf("not a valid nip-05 identifier")
 	}
 
 	req, err := http.NewRequestWithContext(ctx, "GET",
 		fmt.Sprintf("https://%s/.well-known/nostr.json?name=%s", domain, name), nil)
 	if err != nil {
-		return nil, fmt.Errorf("failed to create a request: %w", err)
+		return resp, name, fmt.Errorf("failed to create a request: %w", err)
 	}
 
 	client := &http.Client{
@@ -49,32 +66,16 @@ func QueryIdentifier(ctx context.Context, fullname string) (*nostr.ProfilePointe
 	}
 	res, err := client.Do(req)
 	if err != nil {
-		return nil, fmt.Errorf("request failed: %w", err)
+		return resp, name, fmt.Errorf("request failed: %w", err)
 	}
 	defer res.Body.Close()
 
 	var result WellKnownResponse
 	if err := json.NewDecoder(res.Body).Decode(&result); err != nil {
-		return nil, fmt.Errorf("failed to decode json response: %w", err)
-	}
-
-	pubkey, ok := result.Names[name]
-	if !ok {
-		return &nostr.ProfilePointer{}, nil
+		return resp, name, fmt.Errorf("failed to decode json response: %w", err)
 	}
 
-	if len(pubkey) == 64 {
-		if _, err := hex.DecodeString(pubkey); err != nil {
-			return &nostr.ProfilePointer{}, nil
-		}
-	}
-
-	relays, _ := result.Relays[pubkey]
-
-	return &nostr.ProfilePointer{
-		PublicKey: pubkey,
-		Relays:    relays,
-	}, nil
+	return resp, name, nil
 }
 
 func NormalizeIdentifier(fullname string) string {

nip46/client.go

@@ -34,26 +34,37 @@ type BunkerClient struct {
 func ConnectBunker(
 	ctx context.Context,
 	clientSecretKey string,
-	bunkerURL string,
+	bunkerURLOrNIP05 string,
 	pool *nostr.SimplePool,
 ) (*BunkerClient, error) {
-	parsed, err := url.Parse(bunkerURL)
+	parsed, err := url.Parse(bunkerURLOrNIP05)
 	if err != nil {
 		return nil, fmt.Errorf("invalid url: %w", err)
 	}
 
-	if parsed.Scheme != "bunker" {
+	// assume it's a bunker url (will fail later if not)
+	secret := parsed.Query().Get("secret")
+	relays := parsed.Query()["relay"]
+	target := parsed.Host
+
+	if parsed.Scheme == "" {
+		// could be a NIP-05
+		pubkey, relays_, err := queryWellKnownNostrJson(ctx, bunkerURLOrNIP05)
+		if err != nil {
+			return nil, fmt.Errorf("failed to query nip05: %w", err)
+		}
+		target = pubkey
+		relays = relays_
+	} else if parsed.Scheme == "bunker" {
+		// this is what we were expecting, so just move on
+	} else {
+		// otherwise fail here
 		return nil, fmt.Errorf("wrong scheme '%s', must be bunker://", parsed.Scheme)
 	}
-
-	target := parsed.Host
 	if !nostr.IsValidPublicKey(target) {
 		return nil, fmt.Errorf("'%s' is not a valid public key hex", target)
 	}
 
-	secret := parsed.Query().Get("secret")
-	relays := parsed.Query()["relay"]
-
 	if pool == nil {
 		pool = nostr.NewSimplePool(ctx)
 	}

nip46/wellknownnostrjson.go

@@ -0,0 +1,26 @@
+package nip46
+
+import (
+	"context"
+	"fmt"
+
+	"github.com/nbd-wtf/go-nostr/nip05"
+)
+
+func queryWellKnownNostrJson(ctx context.Context, fullname string) (pubkey string, relays []string, err error) {
+	result, name, err := nip05.Fetch(ctx, fullname)
+	if err != nil {
+		return "", nil, err
+	}
+
+	pubkey, ok := result.Names[name]
+	if !ok {
+		return "", nil, fmt.Errorf("no entry found for the '%s' name", name)
+	}
+	relays, _ = result.NIP46[pubkey]
+	if !ok {
+		return "", nil, fmt.Errorf("no bunker relays found for the '%s' name", name)
+	}
+
+	return pubkey, relays, nil
+}