+/*
+ * Parse a limited set of iPXE commands. This is handled separately from
+ * conf_parse_buf() since not all commands will have a value.
+ */
+static bool ipxe_simple_parser(struct conf_context *ctx, char *buf, int len)
+{
+ struct discover_boot_option *opt;
+ char *p, *name, *value;
+ struct pb_url *url;
+
+ p = strstr(buf, "#!ipxe");
+
+ /* Only try to parse this if the ipxe header is right at the start */
+ if (!p || p != buf)
+ return false;
+ p = strchr(buf, '\n') + 1;
+
+ opt = discover_boot_option_create(ctx->dc, ctx->dc->device);
+
+ opt->option->id = talloc_asprintf(opt, "%s@%p",
+ ctx->dc->device->device->id, opt);
+ opt->option->type = DISCOVER_BOOT_OPTION;
+
+ while (p && p <= buf + len) {
+
+ p = conf_get_pair(ctx, p, &name, &value, ' ', '\n');
+
+ /* The 'boot' command appears by itself without options */
+ if (!name && value && streq(value, "boot")) {
+ opt->option->is_default = true;
+ continue;
+ }
+
+ /* All other parameters require a value */
+ if (!value) {
+ pb_debug("%s: '%s' missing value\n", __func__, name);
+ continue;
+ }
+
+ if (streq(name, "kernel")) {
+ char *args, *name = NULL, *saveptr = NULL, *tmp;
+
+ /*
+ * value is of the form:
+ * boot_image [--name option_name ] [option args ...]
+ */
+ tmp = strtok_r(value, " ", &saveptr);
+ if (!tmp) {
+ pb_log("%s: malformed kernel statement\n", __func__);
+ break;
+ }
+
+ url = pxe_url_join(ctx->dc, ctx->dc->conf_url, tmp);
+ opt->boot_image = create_url_resource(opt, url);
+
+ tmp = strtok_r(NULL, " ", &saveptr);
+ if (!tmp)
+ continue;
+ if (streq(tmp, "--name")) {
+ tmp = strtok_r(NULL, " ", &saveptr);
+ name = talloc_asprintf(opt, "%s",
+ tmp ?: "malformed ipxe option");
+ args = strtok_r(NULL, " ", &saveptr);
+ } else
+ args = tmp;
+
+ while (args) {
+ pxe_append_string(opt, args);
+ args = strtok_r(NULL, " ", &saveptr);
+ }
+
+ opt->option->name = name ?: talloc_asprintf(opt,
+ "ipxe option (%s)", url->full);
+ continue;
+ }
+
+ if (streq(name, "initrd")) {
+ url = pxe_url_join(ctx->dc, ctx->dc->conf_url, value);
+ opt->initrd = create_url_resource(opt, url);
+ continue;
+ }
+ }
+
+ if (opt->boot_image)
+ discover_context_add_boot_option(ctx->dc, opt);
+ else
+ pb_debug("ipxe file did not contain a valid option\n");
+
+ return true;
+}
+