0.3.2

pkg/resolver/resolver.go

@@ -0,0 +1,74 @@
+package resolver
+
+import (
+	"crypto/sha256"
+	"encoding/hex"
+	"errors"
+	"strings"
+	"sync"
+
+	"github.com/Sudo-Ivan/reticulum-go/pkg/identity"
+)
+
+type Resolver struct {
+	cache     map[string]*identity.Identity
+	cacheLock sync.RWMutex
+}
+
+func New() *Resolver {
+	return &Resolver{
+		cache: make(map[string]*identity.Identity),
+	}
+}
+
+func (r *Resolver) ResolveIdentity(fullName string) (*identity.Identity, error) {
+	if fullName == "" {
+		return nil, errors.New("empty identity name")
+	}
+
+	r.cacheLock.RLock()
+	if cachedIdentity, exists := r.cache[fullName]; exists {
+		r.cacheLock.RUnlock()
+		return cachedIdentity, nil
+	}
+	r.cacheLock.RUnlock()
+
+	// Hash the full name to create a deterministic identity
+	h := sha256.New()
+	h.Write([]byte(fullName))
+	nameHash := h.Sum(nil)[:identity.NAME_HASH_LENGTH/8]
+	hashStr := hex.EncodeToString(nameHash)
+
+	// Check if this identity is known
+	if knownData, exists := identity.GetKnownDestination(hashStr); exists {
+		if id, ok := knownData[2].(*identity.Identity); ok {
+			r.cacheLock.Lock()
+			r.cache[fullName] = id
+			r.cacheLock.Unlock()
+			return id, nil
+		}
+	}
+
+	// Split name into parts for hierarchical resolution
+	parts := strings.Split(fullName, ".")
+	if len(parts) < 2 {
+		return nil, errors.New("invalid identity name format")
+	}
+
+	// Create new identity if not found
+	id, err := identity.New()
+	if err != nil {
+		return nil, err
+	}
+
+	r.cacheLock.Lock()
+	r.cache[fullName] = id
+	r.cacheLock.Unlock()
+
+	return id, nil
+}
+
+func ResolveIdentity(fullName string) (*identity.Identity, error) {
+	r := New()
+	return r.ResolveIdentity(fullName)
+}