+static int parse_argv(int argc, char *argv[]) {
+ enum {
+ ARG_VERSION = 0x100,
+ ARG_KEY,
+ ARG_CERT,
+ ARG_TRUST,
+ };
+
+ int r, c;
+
+ static const struct option options[] = {
+ { "help", no_argument, NULL, 'h' },
+ { "version", no_argument, NULL, ARG_VERSION },
+ { "key", required_argument, NULL, ARG_KEY },
+ { "cert", required_argument, NULL, ARG_CERT },
+ { "trust", required_argument, NULL, ARG_TRUST },
+ {}
+ };
+
+ assert(argc >= 0);
+ assert(argv);
+
+ while ((c = getopt_long(argc, argv, "h", options, NULL)) >= 0)
+
+ switch(c) {
+
+ case 'h':
+ return help();
+
+ case ARG_VERSION:
+ puts(PACKAGE_STRING);
+ puts(SYSTEMD_FEATURES);
+ return 0;
+
+ case ARG_KEY:
+ if (key_pem) {
+ log_error("Key file specified twice");
+ return -EINVAL;
+ }
+ r = read_full_file(optarg, &key_pem, NULL);
+ if (r < 0) {
+ log_error("Failed to read key file: %s", strerror(-r));
+ return r;
+ }
+ assert(key_pem);
+ break;
+
+ case ARG_CERT:
+ if (cert_pem) {
+ log_error("Certificate file specified twice");
+ return -EINVAL;
+ }
+ r = read_full_file(optarg, &cert_pem, NULL);
+ if (r < 0) {
+ log_error("Failed to read certificate file: %s", strerror(-r));
+ return r;
+ }
+ assert(cert_pem);
+ break;
+
+ case ARG_TRUST:
+#ifdef HAVE_GNUTLS
+ if (trust_pem) {
+ log_error("CA certificate file specified twice");
+ return -EINVAL;
+ }
+ r = read_full_file(optarg, &trust_pem, NULL);
+ if (r < 0) {
+ log_error("Failed to read CA certificate file: %s", strerror(-r));
+ return r;
+ }
+ assert(trust_pem);
+ break;
+#else
+ log_error("Option --trust is not available.");
+#endif
+
+ case '?':
+ return -EINVAL;
+
+ default:
+ assert_not_reached("Unhandled option");
+ }
+
+ if (optind < argc) {