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eap_proxy: Add support for SIM state change indication from eap_proxy

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This registers a new callback to indicate change in SIM state. This
helps to do some clean up (more specifically pmksa_flush) based on the
state change of the SIM. Without this, the reconnection using the cached
PMKSA could happen though the SIM is changed.

Currently eap_proxy_sim_state corresponds to only SIM_STATE_ERROR. This
can be further extended.

Signed-off-by: Jouni Malinen <jouni@qca.qualcomm.com>
This commit is contained in:
Purushottam Kushwaha 2016-12-13 18:30:21 +05:30 committed by Jouni Malinen
parent 79a54ab9f6
commit a6f3761f7d
5 changed files with 56 additions and 0 deletions
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4
src/common/defs.h
View file

@ -376,4 +376,8 @@ enum beacon_rate_type {
BEACON_RATE_VHT
};
enum eap_proxy_sim_state {
SIM_STATE_ERROR,
};
#endif /* DEFS_H */

8
src/eap_peer/eap.h
View file

@ -252,6 +252,14 @@ struct eapol_callbacks {
* @ctx: eapol_ctx from eap_peer_sm_init() call
*/
void (*eap_proxy_cb)(void *ctx);
/**
* eap_proxy_notify_sim_status - Notification of SIM status change
* @ctx: eapol_ctx from eap_peer_sm_init() call
* @sim_state: One of enum value from sim_state
*/
void (*eap_proxy_notify_sim_status)(void *ctx,
enum eap_proxy_sim_state sim_state);
#endif /* CONFIG_EAP_PROXY */
/**

14
src/eapol_supp/eapol_supp_sm.c
View file

@ -1999,6 +1999,7 @@ static void eapol_sm_notify_status(void *ctx, const char *status,
#ifdef CONFIG_EAP_PROXY
static void eapol_sm_eap_proxy_cb(void *ctx)
{
struct eapol_sm *sm = ctx;
@ -2006,6 +2007,18 @@ static void eapol_sm_eap_proxy_cb(void *ctx)
if (sm->ctx->eap_proxy_cb)
sm->ctx->eap_proxy_cb(sm->ctx->ctx);
}
static void
eapol_sm_eap_proxy_notify_sim_status(void *ctx,
enum eap_proxy_sim_state sim_state)
{
struct eapol_sm *sm = ctx;
if (sm->ctx->eap_proxy_notify_sim_status)
sm->ctx->eap_proxy_notify_sim_status(sm->ctx->ctx, sim_state);
}
#endif /* CONFIG_EAP_PROXY */
@ -2034,6 +2047,7 @@ static const struct eapol_callbacks eapol_cb =
eapol_sm_notify_status,
#ifdef CONFIG_EAP_PROXY
eapol_sm_eap_proxy_cb,
eapol_sm_eap_proxy_notify_sim_status,
#endif /* CONFIG_EAP_PROXY */
eapol_sm_set_anon_id
};

8
src/eapol_supp/eapol_supp_sm.h
View file

@ -277,6 +277,14 @@ struct eapol_ctx {
* @ctx: eapol_ctx from eap_peer_sm_init() call
*/
void (*eap_proxy_cb)(void *ctx);
/**
* eap_proxy_notify_sim_status - Notification of SIM status change
* @ctx: eapol_ctx from eap_peer_sm_init() call
* @status: One of enum value from sim_state
*/
void (*eap_proxy_notify_sim_status)(void *ctx,
enum eap_proxy_sim_state sim_state);
#endif /* CONFIG_EAP_PROXY */
/**

22
wpa_supplicant/wpas_glue.c
View file

@ -893,6 +893,7 @@ static void wpa_supplicant_eap_param_needed(void *ctx,
#ifdef CONFIG_EAP_PROXY
static void wpa_supplicant_eap_proxy_cb(void *ctx)
{
struct wpa_supplicant *wpa_s = ctx;
@ -908,6 +909,25 @@ static void wpa_supplicant_eap_proxy_cb(void *ctx)
wpa_printf(MSG_DEBUG, "eap_proxy: IMSI not available");
}
}
static void
wpa_supplicant_eap_proxy_notify_sim_status(void *ctx,
enum eap_proxy_sim_state sim_state)
{
struct wpa_supplicant *wpa_s = ctx;
wpa_printf(MSG_DEBUG, "eap_proxy: SIM card status %u", sim_state);
switch (sim_state) {
case SIM_STATE_ERROR:
wpa_sm_pmksa_cache_flush(wpa_s->wpa, NULL);
break;
default:
wpa_printf(MSG_DEBUG, "eap_proxy: SIM card status unknown");
break;
}
}
#endif /* CONFIG_EAP_PROXY */
@ -1018,6 +1038,8 @@ int wpa_supplicant_init_eapol(struct wpa_supplicant *wpa_s)
ctx->eap_param_needed = wpa_supplicant_eap_param_needed;
#ifdef CONFIG_EAP_PROXY
ctx->eap_proxy_cb = wpa_supplicant_eap_proxy_cb;
ctx->eap_proxy_notify_sim_status =
wpa_supplicant_eap_proxy_notify_sim_status;
#endif /* CONFIG_EAP_PROXY */
ctx->port_cb = wpa_supplicant_port_cb;
ctx->cb = wpa_supplicant_eapol_cb;