Use runtime-dir Unix sockets for local gRPC

cmd/keepassgo-browser-bridge/main.go

@@ -8,9 +8,11 @@ import (
 	"os"
 	"os/exec"
 	"path/filepath"
+	"runtime"
 	"strings"
 
 	"git.julianfamily.org/keepassgo/internal/browserbridge"
+	"git.julianfamily.org/keepassgo/internal/grpcaddr"
 )
 
 func main() {
@@ -39,6 +41,8 @@ func runInstallNativeHost(args []string) error {
 	browserName := fs.String("browser", string(browserbridge.BrowserFirefox), "target browser: firefox, chrome, chromium")
 	binaryPath := fs.String("binary", "", "path to keepassgo-browser-bridge binary")
 	extensionID := fs.String("extension-id", "", "browser extension id (required for chrome/chromium)")
+	extensionKey := fs.String("extension-key", "", "Chromium manifest public key used to derive a fixed extension id")
+	extensionKeyFile := fs.String("extension-key-file", "", "path to a Chromium manifest public key file")
 	outputPath := fs.String("output", "", "native host manifest output path")
 	if err := fs.Parse(args); err != nil {
 		return err
@@ -51,7 +55,25 @@ func runInstallNativeHost(args []string) error {
 		}
 		path = resolved
 	}
-	installed, err := browserbridge.InstallManifest(browserbridge.Browser(strings.TrimSpace(*browserName)), path, strings.TrimSpace(*extensionID), strings.TrimSpace(*outputPath))
+	resolvedExtensionID := strings.TrimSpace(*extensionID)
+	if resolvedExtensionID == "" {
+		keyValue := strings.TrimSpace(*extensionKey)
+		if keyValue == "" && strings.TrimSpace(*extensionKeyFile) != "" {
+			data, err := os.ReadFile(strings.TrimSpace(*extensionKeyFile))
+			if err != nil {
+				return err
+			}
+			keyValue = string(data)
+		}
+		if keyValue != "" {
+			derivedID, err := browserbridge.ChromiumExtensionIDFromManifestKey(keyValue)
+			if err != nil {
+				return err
+			}
+			resolvedExtensionID = derivedID
+		}
+	}
+	installed, err := browserbridge.InstallManifest(browserbridge.Browser(strings.TrimSpace(*browserName)), path, resolvedExtensionID, strings.TrimSpace(*outputPath))
 	if err != nil {
 		return err
 	}
@@ -61,7 +83,7 @@ func runInstallNativeHost(args []string) error {
 
 func runStatus(args []string) error {
 	fs := flag.NewFlagSet("status", flag.ContinueOnError)
-	grpcAddr := fs.String("grpc-addr", browserbridge.DefaultGRPCAddress, "KeePassGO local gRPC address")
+	grpcAddr := fs.String("grpc-addr", grpcaddr.Default(runtime.GOOS), "KeePassGO local gRPC address")
 	token := fs.String("token", "", "KeePassGO API bearer token")
 	if err := fs.Parse(args); err != nil {
 		return err