+#include "bus-util.h"
+#include "build.h"
+
+#define DEFAULT_BUS_PATH "unix:path=/run/dbus/system_bus_socket"
+
+const char *arg_bus_path = DEFAULT_BUS_PATH;
+
+static int help(void) {
+
+ printf("%s [OPTIONS...]\n\n"
+ "STDIO or socket-activatable proxy to a given DBus endpoint.\n\n"
+ " -h --help Show this help\n"
+ " --version Show package version\n"
+ " --bus-path=PATH Path to the kernel bus (default: %s)\n",
+ program_invocation_short_name, DEFAULT_BUS_PATH);
+
+ return 0;
+}
+
+static int parse_argv(int argc, char *argv[]) {
+
+ enum {
+ ARG_VERSION = 0x100,
+ };
+
+ static const struct option options[] = {
+ { "help", no_argument, NULL, 'h' },
+ { "bus-path", required_argument, NULL, 'p' },
+ { NULL, 0, NULL, 0 }
+ };
+
+ int c;
+
+ assert(argc >= 0);
+ assert(argv);
+
+ while ((c = getopt_long(argc, argv, "hsup:", options, NULL)) >= 0) {
+
+ switch (c) {
+
+ case 'h':
+ help();
+ return 0;
+
+ case ARG_VERSION:
+ puts(PACKAGE_STRING);
+ puts(SYSTEMD_FEATURES);
+ return 0;
+
+ case '?':
+ return -EINVAL;
+
+ case 'p':
+ arg_bus_path = optarg;
+ break;
+
+ default:
+ log_error("Unknown option code %c", c);
+ return -EINVAL;
+ }
+ }
+
+ return 1;
+}