/* event_send_start -- prepare to send a event message to subscriber
*
* This gets complicated because:
* -- The message is sent via TCP and we have to keep the stream open
* for 30 seconds to get a response... then close it.
* -- But we might have other event happen in the meantime...
* we have to queue them, if we lose them then the subscriber will
* be forced to unsubscribe and subscribe again.
* -- If multiple URLs are provided then we are supposed to try successive
* ones after 30 second timeout.
* -- The URLs might use domain names instead of dotted decimal addresses,
* and resolution of those may cause unwanted sleeping.
* -- Doing the initial TCP connect can take a while, so we have to come
* back after connection and then send the data.
*
* Returns nonzero on error;
*
* Prerequisite: No current event send (s->current_event == NULL)
* and non-empty queue.
*/
static int event_send_start(struct subscription *s)
{
struct wps_event_ *e;
int itry;
/*
* Assume we are called ONLY with no current event and ONLY with
* nonempty event queue and ONLY with at least one address to send to.
*/
assert(s->addr_list != NULL);
assert(s->current_event == NULL);
assert(s->event_queue != NULL);
s->current_event = e = event_dequeue(s);
/* Use address acc. to no. of retries */
e->addr = s->addr_list;
for (itry = 0; itry < e->retry; itry++)
e->addr = e->addr->next;
e->sd = socket(AF_INET, SOCK_STREAM, 0);
if (e->sd < 0) {
event_retry(e, 0);
return -1;
}
/* set non-blocking so we don't sleep waiting for connection */
if (fcntl(e->sd, F_SETFL, O_NONBLOCK) != 0) {
event_retry(e, 0);
return -1;
}
/*
* Start the connect. It might succeed immediately but more likely will
* return errno EINPROGRESS.
*/
if (connect(e->sd, (struct sockaddr *) &e->addr->saddr,
sizeof(e->addr->saddr))) {
if (errno != EINPROGRESS) {
event_retry(e, 1);
return -1;
}
}
/* Call back when ready for writing (or on failure...). */
if (eloop_register_sock(e->sd, EVENT_TYPE_WRITE, event_send_tx_ready,
NULL, e)) {
event_retry(e, 0);
return -1;
}
e->sd_registered = 1;
/* Don't wait forever! */
if (eloop_register_timeout(EVENT_TIMEOUT_SEC, 0, event_timeout_handler,
NULL, e)) {
event_retry(e, 0);
return -1;
}
return 0;
}
/* event_delete_all -- delete entire event queue and current event */
void event_delete_all(struct subscription *s)
{
struct wps_event_ *e;
while ((e = event_dequeue(s)) != NULL)
event_delete(e);
if (s->current_event) {
event_delete(s->current_event);
/* will set: s->current_event = NULL; */
}
}
void act_mevt_a(int8 id)
{
int8 event;
if(event_dequeue(&id, &event) != RET_OK) {
CMD_RESP_RET(RET_NO_DATA, VAL_NONE);
}
if(id <= ATC_SOCK_NUM_END && event == SOCKEVENT_RECV)
EVENT_RESP_SIZE(id, event, GetSocketRxRecvBufferSize(id));
else EVENT_RESP(id, event);
}
/**
* event_add - Add a new event to a queue
* @s: Subscription
* @data: Event data (is copied; caller retains ownership)
* @probereq: Whether this is a Probe Request event
* Returns: 0 on success, -1 on error, 1 on max event queue limit reached
*/
int event_add(struct subscription *s, const struct wpabuf *data, int probereq)
{
struct wps_event_ *e;
unsigned int len;
len = dl_list_len(&s->event_queue);
if (len >= MAX_EVENTS_QUEUED) {
wpa_printf(MSG_DEBUG, "WPS UPnP: Too many events queued for "
"subscriber %p", s);
if (probereq)
return 1;
/* Drop oldest entry to allow EAP event to be stored. */
e = event_dequeue(s);
if (!e)
return 1;
event_delete(e);
}
if (s->last_event_failed && probereq && len > 0) {
/*
* Avoid queuing frames for subscribers that may have left
* without unsubscribing.
*/
wpa_printf(MSG_DEBUG, "WPS UPnP: Do not queue more Probe "
"Request frames for subscription %p since last "
"delivery failed", s);
return -1;
}
e = os_zalloc(sizeof(*e));
if (e == NULL)
return -1;
dl_list_init(&e->list);
e->s = s;
e->data = wpabuf_dup(data);
if (e->data == NULL) {
os_free(e);
return -1;
}
e->subscriber_sequence = s->next_subscriber_sequence++;
if (s->next_subscriber_sequence == 0)
s->next_subscriber_sequence++;
wpa_printf(MSG_DEBUG, "WPS UPnP: Queue event %p for subscriber %p "
"(queue len %u)", e, s, len + 1);
dl_list_add_tail(&s->event_queue, &e->list);
event_send_all_later(s->sm);
return 0;
}
/* event_send_start -- prepare to send a event message to subscriber
*
* This gets complicated because:
* -- The message is sent via TCP and we have to keep the stream open
* for 30 seconds to get a response... then close it.
* -- But we might have other event happen in the meantime...
* we have to queue them, if we lose them then the subscriber will
* be forced to unsubscribe and subscribe again.
* -- If multiple URLs are provided then we are supposed to try successive
* ones after 30 second timeout.
* -- The URLs might use domain names instead of dotted decimal addresses,
* and resolution of those may cause unwanted sleeping.
* -- Doing the initial TCP connect can take a while, so we have to come
* back after connection and then send the data.
*
* Returns nonzero on error;
*
* Prerequisite: No current event send (s->current_event == NULL)
* and non-empty queue.
*/
static int event_send_start(struct subscription *s)
{
struct wps_event_ *e;
unsigned int itry;
struct wpabuf *buf;
/*
* Assume we are called ONLY with no current event and ONLY with
* nonempty event queue and ONLY with at least one address to send to.
*/
if (dl_list_empty(&s->addr_list) ||
s->current_event ||
dl_list_empty(&s->event_queue))
return -1;
s->current_event = e = event_dequeue(s);
/* Use address according to number of retries */
itry = 0;
dl_list_for_each(e->addr, &s->addr_list, struct subscr_addr, list)
if (itry++ == e->retry)
break;
if (itry < e->retry)
return -1;
buf = event_build_message(e);
if (buf == NULL) {
event_retry(e, 0);
return -1;
}
e->http_event = http_client_addr(&e->addr->saddr, buf, 0,
event_http_cb, e);
if (e->http_event == NULL) {
wpabuf_free(buf);
event_retry(e, 0);
return -1;
}
return 0;
}
void dequeue_loop(void)
{
Event_t e = event_dequeue();
if (e != EVENT_NULL)
{
// analyse des évènements
#if KBS_ANALYSER
unsigned long last_process_time = micros();
#endif
execute_callback(e);
// analyse des évènements
#if KBS_ANALYSER
busy_time += micros() - last_process_time;
#endif
}
}
static void detach(void) {
event_dequeue(&nmi_event);
}
