Initial Navis client with NaiveProxy, profiles, ping and git updates

Co-authored-by: Cursor <cursoragent@cursor.com>

internal/protocols/naive/uri.go

@@ -0,0 +1,68 @@
+package naive
+
+import (
+	"fmt"
+	"net/url"
+	"strings"
+)
+
+// NormalizeProxyURI converts share links and aliases into a naive --proxy URI.
+//
+// Supported inputs:
+//   - https://user:pass@host:443
+//   - quic://user:pass@host
+//   - naive+https://user:pass@host:443#remark
+//   - naive+quic://user:pass@host#remark
+func NormalizeProxyURI(raw string) (string, error) {
+	uri, _, err := ParseShareLink(raw)
+	return uri, err
+}
+
+// ParseShareLink returns a normalized proxy URI and optional remark from #fragment.
+func ParseShareLink(raw string) (proxyURI, remark string, err error) {
+	raw = strings.TrimSpace(raw)
+	if raw == "" {
+		return "", "", fmt.Errorf("empty proxy URI")
+	}
+
+	if i := strings.IndexByte(raw, '#'); i >= 0 {
+		remark = strings.TrimSpace(raw[i+1:])
+		raw = raw[:i]
+	}
+
+	lower := strings.ToLower(raw)
+	switch {
+	case strings.HasPrefix(lower, "naive+https://"):
+		raw = "https://" + raw[len("naive+https://"):]
+	case strings.HasPrefix(lower, "naive+quic://"):
+		raw = "quic://" + raw[len("naive+quic://"):]
+	case strings.HasPrefix(lower, "naive://"):
+		raw = "https://" + raw[len("naive://"):]
+	}
+
+	u, err := url.Parse(raw)
+	if err != nil {
+		return "", "", fmt.Errorf("parse proxy URI: %w", err)
+	}
+	switch strings.ToLower(u.Scheme) {
+	case "https", "quic", "http":
+	default:
+		return "", "", fmt.Errorf("unsupported proxy scheme %q (use https://, quic:// or naive+https://)", u.Scheme)
+	}
+	if u.Host == "" {
+		return "", "", fmt.Errorf("proxy URI missing host")
+	}
+	if u.User == nil || u.User.Username() == "" {
+		return "", "", fmt.Errorf("proxy URI missing username")
+	}
+	if _, ok := u.User.Password(); !ok {
+		return "", "", fmt.Errorf("proxy URI missing password")
+	}
+
+	out := &url.URL{
+		Scheme: strings.ToLower(u.Scheme),
+		User:   u.User,
+		Host:   u.Host,
+	}
+	return out.String(), remark, nil
+}