router-for-me/CLIProxyAPI · error

auth path is empty

Error message

auth path is empty

What it means

Thrown by Host.buildAuthFromFileData when the path argument trims to empty. The builder needs a concrete file path to derive the auth identity (authIDForPath) and to optionally read data; an empty path is a programming-error-level input.

Source

Thrown at internal/pluginhost/auth_callbacks.go:307

			dst = abs
		}
	}
	auth, errBuild := h.buildAuthFromFileData(dst, data)
	if errBuild != nil {
		return "", errBuild
	}
	if errWrite := os.WriteFile(dst, data, 0o600); errWrite != nil {
		return "", fmt.Errorf("failed to write auth file: %w", errWrite)
	}
	if errUpsert := h.upsertAuthRecord(ctx, auth); errUpsert != nil {
		return "", errUpsert
	}
	return dst, nil
}

func (h *Host) buildAuthFromFileData(path string, data []byte) (*coreauth.Auth, error) {
	if strings.TrimSpace(path) == "" {
		return nil, fmt.Errorf("auth path is empty")
	}
	if data == nil {
		var errRead error
		data, errRead = os.ReadFile(path)
		if errRead != nil {
			return nil, fmt.Errorf("failed to read auth file: %w", errRead)
		}
	}
	metadata := make(map[string]any)
	if errUnmarshal := json.Unmarshal(data, &metadata); errUnmarshal != nil {
		return nil, fmt.Errorf("invalid auth file: %w", errUnmarshal)
	}
	provider, _ := metadata["type"].(string)
	if strings.TrimSpace(provider) == "" {
		provider = "unknown"
	}
	label := provider
	if email, ok := metadata["email"].(string); ok && strings.TrimSpace(email) != "" {

View on GitHub (pinned to 78f0c4079e)

Solutions

1. Ensure the destination path is built from a non-empty directory plus base name before calling build
2. Guard upstream: reject empty paths at the entry point (saveAuthFile already checks auth dir separately)

if strings.TrimSpace(path) == "" {
    return errors.New("empty auth path")
}

When it happens

Trigger: Caller passes an empty/unset path string, typically when a save flow computed the destination from an empty auth-dir or an upstream field was never populated.

Common situations: Internal misuse of the build API; a code path where resolvedAuthDir returned "" and Join produced an empty result; refactoring that dropped the path argument.

Related errors

• invalid auth file name
• auth file name must end with .json
• json is required
• invalid auth json: %w
• invalid auth weight: %w

AI-assisted analysis of router-for-me/CLIProxyAPI@78f0c4079e (2026-08-15). Data as JSON: /api/errors/efc45a35bb8b23b3. Report an issue: GitHub.