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WPS: Send SSDP byebye notifications when stopping UPnP advertisements

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This will notify control points of the services going away and allows
them to notice this without having to wait timeout on the
initial advertisements.
This commit is contained in:
Jouni Malinen 2009-11-15 00:46:58 +02:00
parent 9b61515c26
commit 44577e4c2e
3 changed files with 36 additions and 5 deletions
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3
src/wps/wps_upnp.c
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@ -964,8 +964,7 @@ void upnp_wps_device_stop(struct upnp_wps_device_sm *sm)
subscription_destroy(s);
}
advertisement_state_machine_stop(sm);
/* TODO: send byebye notifications */
advertisement_state_machine_stop(sm, 1);
event_send_stop_all(sm);
os_free(sm->wlanevent);

3
src/wps/wps_upnp_i.h
View file

@ -159,7 +159,8 @@ int get_netif_info(const char *net_if, unsigned *ip_addr, char **ip_addr_text,
/* wps_upnp_ssdp.c */
void msearchreply_state_machine_stop(struct advertisement_state_machine *a);
int advertisement_state_machine_start(struct upnp_wps_device_sm *sm);
void advertisement_state_machine_stop(struct upnp_wps_device_sm *sm);
void advertisement_state_machine_stop(struct upnp_wps_device_sm *sm,
int send_byebye);
void ssdp_listener_stop(struct upnp_wps_device_sm *sm);
int ssdp_listener_start(struct upnp_wps_device_sm *sm);
int ssdp_listener_open(void);

35
src/wps/wps_upnp_ssdp.c
View file

@ -228,10 +228,41 @@ static void advertisement_state_machine_handler(void *eloop_data,
/**
* advertisement_state_machine_stop - Stop SSDP advertisements
* @sm: WPS UPnP state machine from upnp_wps_device_init()
* @send_byebye: Send byebye advertisement messages immediately
*/
void advertisement_state_machine_stop(struct upnp_wps_device_sm *sm)
void advertisement_state_machine_stop(struct upnp_wps_device_sm *sm,
int send_byebye)
{
struct advertisement_state_machine *a = &sm->advertisement;
int islast = 0;
struct wpabuf *msg;
struct sockaddr_in dest;
eloop_cancel_timeout(advertisement_state_machine_handler, NULL, sm);
if (!send_byebye)
return;
a->type = ADVERTISE_DOWN;
a->state = 0;
a->sm = sm;
os_memset(&dest, 0, sizeof(dest));
dest.sin_family = AF_INET;
dest.sin_addr.s_addr = inet_addr(UPNP_MULTICAST_ADDRESS);
dest.sin_port = htons(UPNP_MULTICAST_PORT);
while (!islast) {
msg = next_advertisement(a, &islast);
if (msg == NULL)
break;
if (sendto(sm->multicast_sd, wpabuf_head(msg), wpabuf_len(msg),
0, (struct sockaddr *) &dest, sizeof(dest)) < 0) {
wpa_printf(MSG_INFO, "WPS UPnP: Advertisement sendto "
"failed: %d (%s)", errno, strerror(errno));
}
wpabuf_free(msg);
a->state++;
}
}
@ -317,7 +348,7 @@ int advertisement_state_machine_start(struct upnp_wps_device_sm *sm)
struct advertisement_state_machine *a = &sm->advertisement;
int next_timeout_msec;
advertisement_state_machine_stop(sm);
advertisement_state_machine_stop(sm, 0);
/*
* Start out advertising down, this automatically switches