qt/server: ignore -psn_xxxx flags on macOS

This is a blind attempt to fix the issue that the app does not start
on macOS the first time, somtimes.

The args are logged so we can inspect if the weird arg was really
passed or not.

Author: benma

frontends/qt/server/server.go

@@ -41,11 +41,15 @@ import "C"
 
 import (
 	"flag"
+	"os"
+	"runtime"
+	"strings"
 	"unsafe"
 
 	"github.com/digitalbitbox/bitbox-wallet-app/backend/bridgecommon"
 	btctypes "github.com/digitalbitbox/bitbox-wallet-app/backend/coins/btc/types"
 	"github.com/digitalbitbox/bitbox-wallet-app/backend/devices/usb"
+	"github.com/digitalbitbox/bitbox-wallet-app/util/logging"
 	"github.com/digitalbitbox/bitbox-wallet-app/util/system"
 )
 
@@ -76,11 +80,24 @@ func serve(
 	responseCallback C.responseCallback,
 	notifyUserCallback C.notifyUserCallback,
 ) {
+	log := logging.Get().WithGroup("server")
+	log.WithField("args", os.Args).Info("Started Qt application")
 	// workaround: this flag is parsed by qtwebengine, but flag.Parse() quits the app on
 	// unrecognized flags
 	// _ = flag.Int("remote-debugging-port", 0, "")
 	testnet := flag.Bool("testnet", false, "activate testnets")
 
+	if runtime.GOOS == "darwin" {
+		// eat "-psn_xxxx" on Mac, which is passed when starting an app from Finder for the first time.
+		// See also: https://stackoverflow.com/questions/10242115/os-x-strange-psn-command-line-parameter-when-launched-from-finder
+		for _, arg := range os.Args[1:] {
+			trimmed := strings.TrimLeft(arg, "-")
+			if strings.HasPrefix(trimmed, "psn_") {
+				flag.Bool(trimmed, false, "<ignored>")
+			}
+		}
+	}
+
 	gapLimitsReceive := flag.Uint("gapLimitReceive", 0, "gap limit for receive addresses. Do not use this unless you know what this means.")
 	gapLimitsChange := flag.Uint("gapLimitChange", 0, "gap limit for change addresses. Do not use this unless you know what this means.")