-static bool valid_machine_name(const char *p) {
- size_t l;
-
- if (!filename_is_safe(p))
- return false;
-
- if (!ascii_is_valid(p))
- return false;
-
- l = strlen(p);
-
- if (l < 1 || l> 64)
- return false;
-
- return true;
-}
-
-static int bus_manager_create_machine(Manager *manager, DBusMessage *message) {
-
- const char *name, *service, *class, *slice, *root_directory;
- _cleanup_free_ char *p = NULL;
- DBusMessageIter iter, sub;
- MachineClass c;
- uint32_t leader;
- sd_id128_t id;
- Machine *m;
- int n, r;
- void *v;
-
- assert(manager);
- assert(message);
-
- if (!dbus_message_iter_init(message, &iter) ||
- dbus_message_iter_get_arg_type(&iter) != DBUS_TYPE_STRING)
- return -EINVAL;
-
- dbus_message_iter_get_basic(&iter, &name);
-
- if (!valid_machine_name(name) ||
- !dbus_message_iter_next(&iter) ||
- dbus_message_iter_get_arg_type(&iter) != DBUS_TYPE_ARRAY ||
- dbus_message_iter_get_element_type(&iter) != DBUS_TYPE_BYTE)
- return -EINVAL;
-
- dbus_message_iter_recurse(&iter, &sub);
- dbus_message_iter_get_fixed_array(&sub, &v, &n);
-
- if (n == 0)
- id = SD_ID128_NULL;
- else if (n == 16)
- memcpy(&id, v, n);
- else
- return -EINVAL;
-
- if (!dbus_message_iter_next(&iter) ||
- dbus_message_iter_get_arg_type(&iter) != DBUS_TYPE_STRING)
- return -EINVAL;
-
- dbus_message_iter_get_basic(&iter, &service);
-
- if (!dbus_message_iter_next(&iter) ||
- dbus_message_iter_get_arg_type(&iter) != DBUS_TYPE_STRING)
- return -EINVAL;
-
- dbus_message_iter_get_basic(&iter, &class);
-
- if (isempty(class))
- c = _MACHINE_CLASS_INVALID;
- else {
- c = machine_class_from_string(class);
- if (c < 0)
- return -EINVAL;
- }
-
- if (!dbus_message_iter_next(&iter) ||
- dbus_message_iter_get_arg_type(&iter) != DBUS_TYPE_UINT32)
- return -EINVAL;
-
- dbus_message_iter_get_basic(&iter, &leader);
- if (!dbus_message_iter_next(&iter) ||
- dbus_message_iter_get_arg_type(&iter) != DBUS_TYPE_STRING)
- return -EINVAL;
-
- dbus_message_iter_get_basic(&iter, &slice);
- if (!(isempty(slice) || (unit_name_is_valid(slice, false) && endswith(slice, ".slice"))) ||
- !dbus_message_iter_next(&iter) ||
- dbus_message_iter_get_arg_type(&iter) != DBUS_TYPE_STRING)
- return -EINVAL;
-
- dbus_message_iter_get_basic(&iter, &root_directory);
-
- if (!(isempty(root_directory) || path_is_absolute(root_directory)))
- return -EINVAL;
-
- if (hashmap_get(manager->machines, name))
- return -EEXIST;
-
- if (leader <= 0) {
- leader = bus_get_unix_process_id(manager->bus, dbus_message_get_sender(message), NULL);
- if (leader == 0)
- return -EINVAL;
- }
-
- r = manager_add_machine(manager, name, &m);
- if (r < 0)
- goto fail;
-
- m->leader = leader;
- m->class = c;
- m->id = id;
-
- if (!isempty(service)) {
- m->service = strdup(service);
- if (!m->service) {
- r = -ENOMEM;
- goto fail;
- }
- }
-
- if (!isempty(root_directory)) {
- m->root_directory = strdup(root_directory);
- if (!m->root_directory) {
- r = -ENOMEM;
- goto fail;
- }
- }
-
- r = machine_start(m);
- if (r < 0)
- goto fail;
-
- m->create_message = dbus_message_ref(message);
-
- return 0;
-
-fail:
- if (m)
- machine_add_to_gc_queue(m);
-
- return r;
-}
-