sandbox/wl: move into sandbox

Signed-off-by: Ophestra <cat@gensokyo.uk>

sandbox/wl/wl.go

@@ -0,0 +1,36 @@
+package wl
+
+//go:generate sh -c "wayland-scanner client-header `pkg-config --variable=datarootdir wayland-protocols`/wayland-protocols/staging/security-context/security-context-v1.xml security-context-v1-protocol.h"
+//go:generate sh -c "wayland-scanner private-code `pkg-config --variable=datarootdir wayland-protocols`/wayland-protocols/staging/security-context/security-context-v1.xml security-context-v1-protocol.c"
+
+/*
+#cgo linux pkg-config: --static wayland-client
+#cgo freebsd openbsd LDFLAGS: -lwayland-client
+
+#include "wayland-bind.h"
+*/
+import "C"
+import (
+	"errors"
+	"strings"
+)
+
+var (
+	ErrContainsNull = errors.New("string contains null character")
+)
+
+var resErr = [...]error{
+	0: nil,
+	1: errors.New("wl_display_connect_to_fd() failed"),
+	2: errors.New("wp_security_context_v1 not available"),
+}
+
+func bindWaylandFd(socketPath string, fd uintptr, appID, instanceID string, syncFd uintptr) error {
+	if hasNull(appID) || hasNull(instanceID) {
+		return ErrContainsNull
+	}
+	res := C.f_bind_wayland_fd(C.CString(socketPath), C.int(fd), C.CString(appID), C.CString(instanceID), C.int(syncFd))
+	return resErr[int32(res)]
+}
+
+func hasNull(s string) bool { return strings.IndexByte(s, '\x00') > -1 }