static gboolean
glib_main (gpointer data)
{
xmlDoc *doc = NULL;
xmlNode *root_element = NULL;
struct connection conn;
static struct start_network_data start_network_data;
if (!(start_network_data.client = nm_client_new()))
{
network_status (NULL, "Unable to connect to NetworkManager");
g_main_loop_quit (loop);
return FALSE;
}
g_timeout_add_seconds (2, do_timeout, &start_network_data);
start_network_data.should_quit = TRUE;
/*parse the file and get the DOM */
if( NULL == (doc = xmlReadFile(NETWORK_CONFIG, NULL, 0))) {
network_status (start_network_data.client, "error: Could not parse " NETWORK_CONFIG "\n");
g_main_loop_quit (loop);
return FALSE;
}
/*Get the root element node */
root_element = xmlDocGetRootElement(doc);
if (root_element->type == XML_ELEMENT_NODE && !strcmp((char *)root_element->name, "configuration")) {
gchar *err = read_connection(&conn, root_element);
if (err) {
gchar err2[1024];
g_snprintf(err2, sizeof(err2), "Unable to parse configuration data: %s", err);
network_status (start_network_data.client, err2);
g_main_loop_quit (loop);
return FALSE;
}
}
else {
network_status (start_network_data.client, "error: Invalid " NETWORK_CONFIG " file: No <configuration/> root node\n");
g_main_loop_quit (loop);
return FALSE;
}
xmlFreeDoc(doc);
xmlCleanupParser();
/* Generate the UUID from the connection information */
generate_uuid(&conn, start_network_data.uuid, sizeof(start_network_data.uuid));
/* Hand control over to do_connection. Execution will continue in callbacks. */
do_connection(&start_network_data);
return FALSE;
}
void main_loop(){
do {
network_status();
sleep(300);
} while(1);
}
static void
connections_read (NMSettingsInterface *settings, gpointer user_data)
{
GSList *connections;
NMConnection *connection;
NMDevice *dev;
struct start_network_data *data = (struct start_network_data *)user_data;
static int tries = 0;
if(!NM_IS_REMOTE_SETTINGS_SYSTEM(settings))
{
network_status (data->client, "Not a settings_system object! Huh?\n");
g_main_loop_quit (loop);
return;
}
connections = nm_settings_interface_list_connections (settings);
connection = find_connection(connections, data->uuid);
if (!connection) {
if (tries++ >= 2) {
network_status (data->client, "Unable to find connection from " NETWORK_CONFIG " in system configs file");
g_main_loop_quit(loop);
return;
}
return;
}
dev = get_device_for_connection (data->client, connection);
if (!dev) {
network_status (data->client, "Unable to find correct device for connection");
g_main_loop_quit(loop);
return;
}
data->should_quit = FALSE;
nm_client_activate_connection (data->client,
NM_DBUS_SERVICE_SYSTEM_SETTINGS,
nm_connection_get_path (connection),//con_path,
dev,//device,
NULL,//spec_object,
activate_connection_cb,
data);
return;
}
static void
active_connection_state_cb (NMActiveConnection *active, GParamSpec *pspec, gpointer user_data)
{
NMActiveConnectionState state;
struct start_network_data *data = (struct start_network_data *)user_data;
state = nm_active_connection_get_state (active);
if (state == NM_ACTIVE_CONNECTION_STATE_ACTIVATED) {
/* Successful connection */
network_status (data->client, NULL);
g_main_loop_quit (loop);
return;
} else if (state == NM_ACTIVE_CONNECTION_STATE_UNKNOWN) {
network_status (data->client, "Connection activation failed.\n");
g_main_loop_quit (loop);
return;
}
}
static gboolean
do_timeout (gpointer user_data)
{
struct start_network_data *data = (struct start_network_data *)user_data;
if (data->should_quit)
{
network_status (data->client, "error: Connect timed out\n");
g_main_loop_quit (loop);
return FALSE;
}
return TRUE;
}
static void
do_connection (struct start_network_data *user_data)
{
DBusGConnection *bus;
GError *error = NULL;
NMRemoteSettingsSystem *system_settings;
gboolean system_settings_running;
struct start_network_data *data = (struct start_network_data *)user_data;
bus = dbus_g_bus_get (DBUS_BUS_SYSTEM, &error);
if (!bus || error) {
network_status (data->client, "Unable to connect to system bus");
g_main_loop_quit (loop);
goto out;
}
system_settings = nm_remote_settings_system_new(bus);
if(!system_settings) {
network_status (data->client, "Unable to get system settings");
g_main_loop_quit (loop);
goto out;
}
g_object_get (system_settings, NM_REMOTE_SETTINGS_SERVICE_RUNNING, &system_settings_running, NULL);
if(!system_settings_running) {
network_status (data->client, "System settings service is not running");
g_main_loop_quit (loop);
goto out;
}
g_signal_connect (system_settings, NM_SETTINGS_INTERFACE_CONNECTIONS_READ,
G_CALLBACK (connections_read), data);
out:
if (bus)
dbus_g_connection_unref(bus);
return;
}
static void
activate_connection_cb (gpointer user_data, const char *path, GError *error)
{
struct start_network_data *data = (struct start_network_data *)user_data;
NMActiveConnection *active;
NMActiveConnectionState state;
if (error) {
gchar err[512];
g_snprintf (err, sizeof(err), "Unable to connect: %s", error->message);
network_status (data->client, err);
g_main_loop_quit (loop);
return;
}
active = nm_client_get_active_connection_by_path (data->client, path);
if (!active) {
gchar err[512];
g_snprintf (err, sizeof(err), "Unable to obtain active connection state for %s", path);
network_status (data->client, err);
g_main_loop_quit (loop);
return;
}
state = nm_active_connection_get_state (active);
//g_print ("Connection %s state: %s\n", path, active_connection_state_to_string(state));
/* If we actually connect, then quit */
if (state == NM_ACTIVE_CONNECTION_STATE_ACTIVATED)
{
g_main_loop_quit (loop);
return;
}
g_signal_connect (active, "notify::state", G_CALLBACK (active_connection_state_cb), user_data);
return;
}
/**
* Read and process an event from the network mailbox.
*
* \param[in,out] pi Ping info
*
* \return 1 if processed an event, 0 if not, and negative error code otherwise
*/
static int
net_mbox_event(ping_info_t *pi)
{
ExamsgMID mid;
static char msg[sizeof(ExamsgNetRqst) + sizeof(Examsg)];
int s;
if (network_status() != 0)
return 0;
s = examsgMboxRecv(EXAMSG_NETMBOX_ID, &mid, sizeof(mid),
msg, sizeof(msg));
if (s == 0) /* Nothing to read */
return 0;
if (s <= sizeof(ExamsgNetRqst))
{
exalog_error("received %d bytes, error %s", s, exa_error_msg(s));
return -EINVAL;
}
s = network_send(&mid, (ExamsgNetRqst *)msg);
if (s < 0)
{
if (network_manageable(s))
{
remember_unsent(&mid, msg, sizeof(msg));
return s;
}
exalog_error("net mailbox event: error %s", exa_error_msg(s));
return -EIO;
}
reset_ping(pi);
return 1;
}
/**
* Thread processing network events (coming from other nodes).
*
* This routine may set the network status to down as a side-effect
* of calling network_recv(), and sets said status to up when the
* network comes back.
*
* \param[in] dummy Unused
*
* \return NULL
*/
static void
net_events_routine(void *dummy)
{
int dest_mbox;
ExamsgMID mid;
size_t size;
char *msg;
int s;
exalog_as(EXAMSG_CMSGD_ID);
exalog_trace("network events routine started");
while (!quit)
{
int status = network_status();
bool retry;
if (status == -ENETDOWN)
{
network_waitup();
network_set_status(0);
}
do
{
s = network_recv(net_mh, &mid, &msg, &size, &dest_mbox);
retry = (s < 0 && network_manageable(s) && s != -ENETDOWN);
if (retry)
os_sleep(1);
}
while (retry);
/* Succeeded, the network status is ok */
if (s > 0 && status != 0)
network_set_status(0);
if (s == 0 || s == -ENETDOWN)
continue;
EXA_ASSERT(s > 0);
/* Ping from another node for keepalive */
if (((ExamsgAny *)msg)->type == EXAMSG_PING)
{
EXA_ASSERT(dest_mbox == EXAMSG_CMSGD_ID);
exalog_trace("received an EXAMSG_PING from %u:%s",
mid.netid.node, mid.host);
continue;
}
exalog_trace("delivering %" PRIzu " bytes to %d",
size, dest_mbox);
s = examsgMboxSend(&mid, examsgOwner(net_mh), dest_mbox, msg, size);
switch (s)
{
case -ENXIO:
/* The mailbox does not exist (yet). This is not an error: csupd may
* not be started yet and we receive an examsg for it.
* XXX Doesn't sound too good to me, and we should at least check that
* the destination is indeed csupd */
break;
case -ENOSPC:
mailbox_full(dest_mbox, &mid, (Examsg *)msg);
break;
default:
EXA_ASSERT_VERBOSE(s == size + sizeof(mid),
"Error %d delivering message to %d",
s, dest_mbox);
break;
}
}
}
/**
* Thread processing local events (coming from localhost).
*
* This routine may set the network status to down as a side-effect
* of calling network_send().
*
* \param dummy Unused
*
* \return NULL
*/
static void *
local_events_routine(void *dummy)
{
ping_info_t pi;
exalog_trace("local events routine started");
reset_ping(&pi);
while (!quit)
{
int status;
int err;
/* Must be interruptible because signal TERM triggers quit condition */
err = examsgWaitInterruptible(local_mh, &pi.delay);
if (err == -EINTR)
continue;
if (err == -ETIME)
{
status = network_status();
if (status == -ENETDOWN)
{
reset_ping(&pi);
continue;
}
if (unsent.pending)
{
if (send_unsent() && status != 0)
network_set_status(0);
}
else
{
send_ping();
adjust_ping(&pi);
}
continue;
}
/* Local mailbox messages are more important than network messages
* because they may ask for resend, so they are processed first.
*
* Process as many local messages as possible before considering
* network messages so as to avoid sending a new network message
* when there still are important messages.
*/
while (local_mbox_event(&pi) == 1)
;
status = network_status();
if (status == -ENETDOWN)
continue;
if (unsent.pending)
{
if (send_unsent() && status != 0)
network_set_status(0);
}
else
net_mbox_event(&pi);
}
return NULL;
}
/**
* Process an event from a local mailbox.
*
* \param[in,out] pi Ping info
*
* \return 1 if processed an event 0 if not, negative error code otherwise
*/
static int
local_mbox_event(ping_info_t *pi)
{
ExamsgMID mid;
static Examsg ev;
int ev_size;
int s;
ev_size = examsgRecv(local_mh, &mid, &ev, sizeof(ev));
if (ev_size <= 0)
return 0;
switch (ev.any.type)
{
case EXAMSG_EXIT:
{
exa_nodeset_t dest_nodes;
quit = true;
exa_nodeset_single(&dest_nodes, mid.netid.node);
examsgAckReply(local_mh, &ev, EXA_SUCCESS, mid.id, &dest_nodes);
}
/* Return 0 because, despite we received a message, we do not want the
* main loop to continue to process messages as it is asked to stop now.
* So returning 0 juste means here "no need to read anymore messages" */
return 0;
case EXAMSG_SUP_PING:
if (network_status() == 0)
network_special_send(&mid, &ev, ev_size);
break;
case EXAMSG_ADDNODE:
{
exa_nodeset_t dest_nodes;
examsg_node_info_msg_t *info = (examsg_node_info_msg_t *)&ev;
s = network_add_node(info->node_id, info->node_name);
exa_nodeset_single(&dest_nodes, mid.netid.node);
examsgAckReply(local_mh, &ev, s, mid.id, &dest_nodes);
}
break;
case EXAMSG_DELNODE:
{
exa_nodeset_t dest_nodes;
s = network_del_node(((examsg_node_info_msg_t *)&ev)->node_id);
exa_nodeset_single(&dest_nodes, mid.netid.node);
examsgAckReply(local_mh, &ev, s, mid.id, &dest_nodes);
}
break;
case EXAMSG_RETRANSMIT_REQ:
if (network_status() == 0)
{
ExamsgRetransmitReq *retreq = (ExamsgRetransmitReq *)&ev;
exalog_debug("will send a retransmit request for %d to %u",
retreq->count, retreq->node_id);
s = network_send_retransmit_req(retreq->node_id, retreq->count);
EXA_ASSERT(s == 0);
reset_ping(pi);
}
break;
case EXAMSG_RETRANSMIT:
if (network_status() == 0)
{
ExamsgRetransmit *retr = (ExamsgRetransmit *)&ev;
exalog_debug("will retransmit messages: %d", retr->count);
retransmit(retr->count);
reset_ping(pi);
}
break;
case EXAMSG_FENCE:
{
const examsgd_fencing_req_t *req =
&((examsgd_fencing_req_msg_t *)&ev)->request;
network_handle_fence_request(req);
}
break;
case EXAMSG_NEW_COMER:
reset_ping(pi);
break;
default:
{
exa_nodeset_t dest_nodes;
exa_nodeset_single(&dest_nodes, mid.netid.node);
examsgAckReply(local_mh, &ev, EINVAL, mid.id, &dest_nodes);
exalog_error("got unknown message (type %d)", ev.any.type);
EXA_ASSERT(false);
}
break;
}
return 1;
}
