void
ni_autoip_device_put(ni_autoip_device_t *dev)
{
ni_assert(dev->users);
if (--(dev->users) == 0)
ni_autoip_device_free(dev);
}
static dbus_bool_t
__ni_objectmodel_tuntap_newlink(ni_iftype_t iftype, ni_dbus_object_t *factory_object,
const ni_dbus_method_t *method,
unsigned int argc, const ni_dbus_variant_t *argv,
ni_dbus_message_t *reply, DBusError *error)
{
ni_dbus_server_t *server = ni_dbus_object_get_server(factory_object);
const char *ifname = NULL;
ni_netdev_t *dev;
ni_netdev_t *cfg;
NI_TRACE_ENTER();
ni_assert(argc == 2);
if (!ni_dbus_variant_get_string(&argv[0], &ifname) ||
!(cfg = __ni_objectmodel_tuntap_device_arg(&argv[1], iftype))) {
return ni_dbus_error_invalid_args(error,
factory_object->path,
method->name);
}
ni_string_dup(&cfg->name, ifname);
dev = __ni_objectmodel_tuntap_create(cfg, error);
ni_netdev_put(cfg);
if (!dev)
return FALSE;
return ni_objectmodel_netif_factory_result(server, reply, dev, NULL, error);
}
/*
* Free an XML node
*/
void
xml_node_free(xml_node_t *node)
{
xml_node_t *child;
if (!node)
return;
ni_assert(node->refcount);
if (--(node->refcount) != 0)
return;
while ((child = node->children) != NULL) {
node->children = child->next;
xml_node_free(child);
}
if (node->location)
xml_location_free(node->location);
ni_var_array_destroy(&node->attrs);
free(node->cdata);
free(node->name);
free(node);
}
/*
* PPP.changeDevice method
*/
static dbus_bool_t
ni_objectmodel_ppp_device_change(ni_dbus_object_t *object, const ni_dbus_method_t *method,
unsigned int argc, const ni_dbus_variant_t *argv,
ni_dbus_message_t *reply, DBusError *error)
{
ni_netconfig_t *nc = ni_global_state_handle(0);
ni_netdev_t *ifp, *cfg;
dbus_bool_t rv = FALSE;
/* we've already checked that argv matches our signature */
ni_assert(argc == 1);
if (!(ifp = ni_objectmodel_unwrap_netif(object, error)))
return FALSE;
if (!(cfg = ni_objectmodel_ppp_device_arg(&argv[0]))) {
ni_dbus_error_invalid_args(error, object->path, method->name);
goto out;
}
if (ni_system_ppp_setup(nc, ifp, cfg) < 0) {
dbus_set_error(error, DBUS_ERROR_FAILED, "failed to set up ppp device");
goto out;
}
rv = TRUE;
out:
if (cfg)
ni_netdev_put(cfg);
return rv;
}
dbus_bool_t
ni_objectmodel_macvtap_newlink(ni_dbus_object_t *factory_object,
const ni_dbus_method_t *method,
unsigned int argc, const ni_dbus_variant_t *argv,
ni_dbus_message_t *reply, DBusError *error)
{
ni_dbus_server_t *server = ni_dbus_object_get_server(factory_object);
ni_netdev_t *dev;
const char *ifname = NULL;
NI_TRACE_ENTER();
ni_assert(argc == 2);
if (!ni_dbus_variant_get_string(&argv[0], &ifname) ||
!(dev = __ni_objectmodel_macvlan_device_arg(&argv[1], NI_IFTYPE_MACVTAP))) {
return ni_dbus_error_invalid_args(error,
factory_object->path,
method->name);
}
if (!(dev = __ni_objectmodel_macvlan_newlink(dev, ifname, error)))
return FALSE;
return ni_objectmodel_netif_factory_result(server, reply, dev, NULL, error);
}
/*
* ethtool.changeDevice method
*/
static dbus_bool_t
ni_objectmodel_ethtool_setup(ni_dbus_object_t *object, const ni_dbus_method_t *method,
unsigned int argc, const ni_dbus_variant_t *argv,
ni_dbus_message_t *reply, DBusError *error)
{
ni_netdev_t *dev, *cfg;
/* we've already checked that argv matches our signature */
ni_assert(argc == 1);
if (!(dev = ni_objectmodel_unwrap_netif(object, error)))
return FALSE;
if (!(cfg = ni_objectmodel_ethtool_request_arg(&argv[0]))) {
ni_dbus_error_invalid_args(error, object->path, method->name);
return FALSE;
}
if (ni_system_ethtool_setup(NULL, dev, cfg) < 0) {
dbus_set_error(error, DBUS_ERROR_FAILED, "failed to apply ethtool settings");
ni_netdev_put(cfg);
return FALSE;
}
ni_netdev_put(cfg);
return TRUE;
}
/*
* "Clone" an XML node by incrementing its refcount
*/
xml_node_t *
xml_node_clone_ref(xml_node_t *src)
{
ni_assert(src->refcount);
src->refcount++;
return src;
}
ni_autoip_device_t *
ni_autoip_device_get(ni_autoip_device_t *dev)
{
ni_assert(dev->users);
dev->users++;
return dev;
}
/*
* Refcount handling
*/
ni_dhcp4_device_t *
ni_dhcp4_device_get(ni_dhcp4_device_t *dev)
{
ni_assert(dev->users);
dev->users++;
return dev;
}
void
ni_dhcp4_device_free(ni_dhcp4_device_t *dev)
{
ni_dhcp4_device_t **pos;
ni_assert(dev->users == 0);
ni_debug_dhcp("%s: Deleting dhcp4 device with index %u",
dev->ifname, dev->link.ifindex);
ni_dhcp4_device_drop_buffer(dev);
ni_dhcp4_device_drop_lease(dev);
ni_dhcp4_device_drop_best_offer(dev);
ni_dhcp4_device_close(dev);
ni_string_free(&dev->system.ifname);
ni_string_free(&dev->ifname);
/* Drop existing config and request */
ni_dhcp4_device_set_config(dev, NULL);
ni_dhcp4_device_set_request(dev, NULL);
for (pos = &ni_dhcp4_active; *pos; pos = &(*pos)->next) {
if (*pos == dev) {
*pos = dev->next;
break;
}
}
free(dev);
}
/*
* Create a new PPP interface
* We're given two arguments, the interface name and the <ppp> configuration data.
* However, we ignore all the config data at this point and just create the
* device. The configuration data is consumed by a subsequent call to changeDevice
* (where we build a config file from it).
*/
dbus_bool_t
ni_objectmodel_ppp_newlink(ni_dbus_object_t *factory_object, const ni_dbus_method_t *method,
unsigned int argc, const ni_dbus_variant_t *argv,
ni_dbus_message_t *reply, DBusError *error,
__get_device_arg_fn_t get_device_arg_fn)
{
ni_dbus_server_t *server = ni_dbus_object_get_server(factory_object);
const char *ifname = NULL;
ni_netdev_t *dev, *dev_cfg;
NI_TRACE_ENTER();
ni_assert(argc == 2);
if (!ni_dbus_variant_get_string(&argv[0], &ifname))
return ni_dbus_error_invalid_args(error, factory_object->path, method->name);
if (!(dev_cfg = get_device_arg_fn(&argv[1], error)))
return FALSE;
dev = __ni_objectmodel_ppp_newlink(dev_cfg, ifname, error);
ni_netdev_put(dev_cfg);
if (dev == NULL)
return FALSE;
return ni_objectmodel_netif_factory_result(server, reply, dev, NULL, error);
}
/*
* Traverse an xml tree, depth first.
*/
xml_node_t *
xml_node_get_next(xml_node_t *top, xml_node_t *cur)
{
if (cur == NULL) {
/* Start at the top node and descend */
cur = top;
} else {
/* We've already visited this node. Get the
* next one.
* By default, move right, then down. If there's
* no right sibling, move up and repeat.
*/
/* No next sibling: move up, then right */
if (cur->next == NULL) {
if (cur == top || cur->parent == top)
return NULL;
cur = cur->parent;
ni_assert(cur);
return cur;
}
cur = cur->next;
}
/* depth first */
while (cur->children)
cur = cur->children;
return cur;
}
/*
* LLDP.lldpDown
*/
static dbus_bool_t
ni_objectmodel_lldp_down(ni_dbus_object_t *object, const ni_dbus_method_t *method,
unsigned int argc, const ni_dbus_variant_t *argv,
ni_dbus_message_t *reply, DBusError *error)
{
ni_netdev_t *dev;
/* we've already checked that argv matches our signature */
ni_assert(argc == 0);
if (!(dev = ni_objectmodel_unwrap_netif(object, error)))
return FALSE;
if (!ni_system_lldp_available(dev)) {
ni_error("Cannot disable LLDP for device %s: incompatible layer 2 protocol", dev->name);
return TRUE;
}
if (ni_system_lldp_down(dev) < 0) {
dbus_set_error(error, DBUS_ERROR_FAILED, "failed to stop LLDP agent on device %s", dev->name);
return FALSE;
}
return TRUE;
}
ni_json_t *
ni_json_ref(ni_json_t *json)
{
if (json && json->refcount != -1U) {
ni_assert(json->refcount);
json->refcount++;
}
return json;
}
static inline void
xml_location_shared_release(struct xml_location_shared *sl)
{
ni_assert(sl->refcount);
if (--(sl->refcount) == 0) {
free(sl->filename);
free(sl);
}
}
ni_json_pair_t *
ni_json_pair_ref(ni_json_pair_t *pair)
{
if (pair) {
ni_assert(pair->refcount);
pair->refcount++;
}
return pair;
}
void
ni_stringbuf_move(ni_stringbuf_t *dest, ni_stringbuf_t *src)
{
ni_assert(dest->dynamic == src->dynamic);
ni_stringbuf_clear(dest);
*dest = *src;
src->string = NULL;
src->len = 0;
}
void
xml_node_add_child(xml_node_t *parent, xml_node_t *child)
{
xml_node_t **tail;
ni_assert(child->parent == NULL);
tail = __xml_node_list_tail(&parent->children);
__xml_node_list_insert(tail, child, parent);
}
void
ni_shellcmd_free(ni_shellcmd_t *cmd)
{
if (cmd) {
ni_assert(cmd->refcount);
cmd->refcount--;
if (cmd->refcount == 0)
__ni_shellcmd_free(cmd);
}
}
ni_shellcmd_t *
ni_shellcmd_hold(ni_shellcmd_t *cmd)
{
if (cmd) {
ni_assert(cmd->refcount);
cmd->refcount++;
return cmd;
}
return NULL;
}
/*
* Utility functions for starting/stopping the wicked daemon,
* and for connecting to it
*/
int
ni_server_background(const char *appname, ni_daemon_close_t close_flags)
{
const char *piddir = ni_config_piddir();
char pidfilepath[PATH_MAX];
ni_assert(appname != NULL);
snprintf(pidfilepath, sizeof(pidfilepath), "%s/%s.pid", piddir, appname);
return ni_daemonize(pidfilepath, 0644, close_flags);
}
void
ni_json_free(ni_json_t *json)
{
if (!json || json->refcount == -1U)
return;
ni_assert(json->refcount && json->type);
json->refcount--;
if (json->refcount != 0)
return;
switch (json->type) {
case NI_JSON_TYPE_BOOL:
case NI_JSON_TYPE_INT64:
case NI_JSON_TYPE_DOUBLE:
json->type = NI_JSON_TYPE_NONE;
free(json);
break;
case NI_JSON_TYPE_STRING:
ni_string_free(&json->string_value);
json->type = NI_JSON_TYPE_NONE;
free(json);
break;
case NI_JSON_TYPE_OBJECT:
ni_json_object_free(json->object_value);
json->type = NI_JSON_TYPE_NONE;
free(json);
break;
case NI_JSON_TYPE_ARRAY:
ni_json_array_free(json->array_value);
json->type = NI_JSON_TYPE_NONE;
free(json);
break;
default:
ni_assert(json->type > NI_JSON_TYPE_NULL &&
json->type <= NI_JSON_TYPE_ARRAY);
break;
}
}
/*
* Run all the netif firmware discovery scripts and return their output
* as one large buffer.
*/
static ni_buffer_t *
__ni_netconfig_firmware_discovery(const char *root, const char *type, const char *path)
{
ni_buffer_t *result;
ni_config_t *config = ni_global.config;
ni_extension_t *ex;
ni_assert(config);
result = ni_buffer_new_dynamic(1024);
for (ex = config->fw_extensions; ex; ex = ex->next) {
ni_script_action_t *script;
if (ex->c_bindings)
ni_warn("builtins specified in a netif-firmware-discovery element: not supported");
for (script = ex->actions; script; script = script->next) {
ni_process_t *process;
int rv;
/* Check if requested to use specific type/name only (e.g. "ibft") */
if (type && !ni_string_eq_nocase(type, script->name))
continue;
ni_debug_ifconfig("trying to discover netif config via firmware service \"%s\"", script->name);
/* Create an instance of this command */
process = ni_process_new(script->process);
/* Add root directory argument if given */
if (root) {
ni_string_array_append(&process->argv, "-r");
ni_string_array_append(&process->argv, root);
}
/* Add firmware type specific path argument if given */
if (type && path) {
ni_string_array_append(&process->argv, "-p");
ni_string_array_append(&process->argv, path);
}
rv = ni_process_run_and_capture_output(process, result);
ni_process_free(process);
if (rv) {
ni_error("unable to discover firmware (script \"%s\")",
script->name);
ni_buffer_free(result);
return NULL;
}
}
}
return result;
}
static ni_updater_source_t *
ni_updater_source_ref(ni_updater_source_t *src)
{
if (src) {
ni_assert(src->users);
src->users++;
return src;
}
return NULL;
}
/*
* Wireless interface config
*/
ni_wireless_t *
ni_wireless_new(ni_netdev_t *dev)
{
ni_wireless_t *wlan;
ni_assert(dev->wireless == NULL);
wlan = xcalloc(1, sizeof(ni_wireless_t));
wlan->conf.ap_scan = NI_WIRELESS_AP_SCAN_SUPPLICANT_AUTO;
return wlan;
}
void
ni_client_timer_expires(void *user_data, const ni_timer_t *timer)
{
int *status;
ni_assert(user_data);
status = user_data;
(void) timer;
*status = NI_WICKED_RC_ERROR;
ni_error("Operation timeout...");
}
void
ni_netconfig_modem_append(ni_netconfig_t *nc, ni_modem_t *modem)
{
ni_modem_t **tail;
ni_assert(!modem->list.prev && !modem->list.next);
tail = &nc->modems;
while (*tail)
tail = &(*tail)->list.next;
modem->list.prev = tail;
*tail = modem;
}
static dbus_bool_t
ni_objectmodel_gre_change(ni_dbus_object_t *object, const ni_dbus_method_t *method,
unsigned int argc, const ni_dbus_variant_t *argv,
ni_dbus_message_t *reply, DBusError *error)
{
ni_netconfig_t *nc = ni_global_state_handle(0);
ni_netdev_t *dev, *cfg;
ni_gre_t *gre;
const char *err;
/* we've already checked that argv matches our signature */
ni_assert(argc == 1);
if (!(dev = ni_objectmodel_unwrap_netif(object, error)) ||
!(cfg = __ni_objectmodel_gre_device_arg(&argv[0])) ||
!(ni_netdev_get_gre(dev))) {
ni_dbus_error_invalid_args(error, object->path, method->name);
return FALSE;
}
gre = ni_netdev_get_gre(cfg);
if ((err = ni_gre_validate(gre))) {
dbus_set_error(error, DBUS_ERROR_INVALID_ARGS, "%s", err);
return FALSE;
}
cfg->link.ifindex = dev->link.ifindex;
if (ni_string_empty(cfg->name))
ni_string_dup(&cfg->name, dev->name);
if (ni_netdev_device_is_up(dev)) {
ni_debug_objectmodel("Skipping gre changeDevice call on %s: "
"device is up", dev->name);
return TRUE;
}
if (!ni_string_empty(cfg->link.lowerdev.name) &&
!ni_objectmodel_bind_netdev_ref_index(cfg->name, "gre tunnel",
&cfg->link.lowerdev, nc, error))
return FALSE;
if (ni_system_tunnel_change(nc, dev, cfg) < 0) {
dbus_set_error(error,
DBUS_ERROR_FAILED,
"Unable to change gre properties on interface %s",
dev->name);
return FALSE;
}
return TRUE;
}
/*
* Obtain an object handle for Wicked.Modem
*/
ni_dbus_object_t *
ni_call_get_modem_list_object(void)
{
static const ni_dbus_service_t *modem_list_service;
ni_dbus_object_t *list_object;
if (modem_list_service == NULL) {
modem_list_service = ni_objectmodel_service_by_name(NI_OBJECTMODEL_MODEM_LIST_INTERFACE);
ni_assert(modem_list_service);
}
list_object = __ni_call_get_proxy_object(modem_list_service, "Modem");
return list_object;
}
static void
ni_updater_source_free(ni_updater_source_t *src)
{
if (src) {
ni_assert(src->users);
src->users--;
if (src->users == 0) {
src->seqno = 0;
src->lease = NULL;
ni_netdev_ref_destroy(&src->d_ref);
free(src);
}
}
}