static void rsn_preauth_timeout(void *eloop_ctx, void *timeout_ctx)
{
struct wpa_supplicant *wpa_s = eloop_ctx;
wpa_msg(wpa_s, MSG_INFO, "RSN: pre-authentication with " MACSTR
" timed out", MAC2STR(wpa_s->preauth_bssid));
rsn_preauth_deinit(wpa_s);
rsn_preauth_candidate_process(wpa_s);
}
static void rsn_preauth_timeout(void *eloop_ctx, void *timeout_ctx)
{
struct wpa_sm *sm = eloop_ctx;
wpa_msg(sm->ctx->ctx, MSG_INFO, "RSN: pre-authentication with " MACSTR
" timed out", MAC2STR(sm->preauth_bssid));
rsn_preauth_deinit(sm);
rsn_preauth_candidate_process(sm);
}
static void rsn_preauth_eapol_cb(struct eapol_sm *eapol, int success,
void *ctx)
{
struct wpa_sm *sm = ctx;
u8 pmk[PMK_LEN];
if (success) {
int res, pmk_len;
pmk_len = PMK_LEN;
res = eapol_sm_get_key(eapol, pmk, PMK_LEN);
if (res) {
/*
* EAP-LEAP is an exception from other EAP methods: it
* uses only 16-byte PMK.
*/
res = eapol_sm_get_key(eapol, pmk, 16);
pmk_len = 16;
}
if (res == 0) {
wpa_hexdump_key(MSG_DEBUG, "RSN: PMK from pre-auth",
pmk, pmk_len);
sm->pmk_len = pmk_len;
pmksa_cache_add(sm->pmksa, pmk, pmk_len,
sm->preauth_bssid, sm->own_addr,
sm->network_ctx,
WPA_KEY_MGMT_IEEE8021X);
} else {
wpa_msg(sm->ctx->ctx, MSG_INFO, "RSN: failed to get "
"master session key from pre-auth EAPOL state "
"machines");
success = 0;
}
}
wpa_msg(sm->ctx->ctx, MSG_INFO, "RSN: pre-authentication with " MACSTR
" %s", MAC2STR(sm->preauth_bssid),
success ? "completed successfully" : "failed");
rsn_preauth_deinit(sm);
rsn_preauth_candidate_process(sm);
}
static void rsn_preauth_eapol_cb(struct eapol_sm *eapol, int success,
void *ctx)
{
struct wpa_sm *sm = ctx;
u8 pmk[PMK_LEN];
if (success) {
int res, pmk_len;
pmk_len = PMK_LEN;
res = eapol_sm_get_key(eapol, pmk, PMK_LEN);
#ifdef EAP_LEAP
if (res) {
res = eapol_sm_get_key(eapol, pmk, 16);
pmk_len = 16;
}
#endif /* EAP_LEAP */
if (res == 0) {
wpa_hexdump_key(MSG_DEBUG, "RSN: PMK from pre-auth",
pmk, pmk_len);
sm->pmk_len = pmk_len;
pmksa_cache_add(sm, pmk, pmk_len,
sm->preauth_bssid, sm->own_addr,
sm->cur_ssid);
} else {
wpa_msg(sm->ctx->ctx, MSG_INFO, "RSN: failed to get "
"master session key from pre-auth EAPOL state "
"machines");
success = 0;
}
}
wpa_msg(sm->ctx->ctx, MSG_INFO, "RSN: pre-authentication with " MACSTR
" %s", MAC2STR(sm->preauth_bssid),
success ? "completed successfully" : "failed");
rsn_preauth_deinit(sm);
rsn_preauth_candidate_process(sm);
}
/**
* pmksa_candidate_add - Add a new PMKSA candidate
* @sm: Pointer to WPA state machine data from wpa_sm_init()
* @bssid: BSSID (authenticator address) of the candidate
* @prio: Priority (the smaller number, the higher priority)
* @preauth: Whether the candidate AP advertises support for pre-authentication
*
* This function is used to add PMKSA candidates for RSN pre-authentication. It
* is called from scan result processing and from driver events for PMKSA
* candidates, i.e., EVENT_PMKID_CANDIDATE events to wpa_supplicant_event().
*/
void pmksa_candidate_add(struct wpa_sm *sm, const u8 *bssid,
int prio, int preauth)
{
struct rsn_pmksa_candidate *cand, *prev, *pos;
if (sm->network_ctx && sm->proactive_key_caching)
pmksa_cache_get_opportunistic(sm->pmksa, sm->network_ctx,
bssid);
if (!preauth) {
wpa_printf(MSG_DEBUG, "RSN: Ignored PMKID candidate without "
"preauth flag");
return;
}
/* If BSSID already on candidate list, update the priority of the old
* entry. Do not override priority based on normal scan results. */
prev = NULL;
cand = sm->pmksa_candidates;
while (cand) {
if (os_memcmp(cand->bssid, bssid, ETH_ALEN) == 0) {
if (prev)
prev->next = cand->next;
else
sm->pmksa_candidates = cand->next;
break;
}
prev = cand;
cand = cand->next;
}
if (cand) {
if (prio < PMKID_CANDIDATE_PRIO_SCAN)
cand->priority = prio;
} else {
cand = os_zalloc(sizeof(*cand));
if (cand == NULL)
return;
os_memcpy(cand->bssid, bssid, ETH_ALEN);
cand->priority = prio;
}
/* Add candidate to the list; order by increasing priority value. i.e.,
* highest priority (smallest value) first. */
prev = NULL;
pos = sm->pmksa_candidates;
while (pos) {
if (cand->priority <= pos->priority)
break;
prev = pos;
pos = pos->next;
}
cand->next = pos;
if (prev)
prev->next = cand;
else
sm->pmksa_candidates = cand;
wpa_msg(sm->ctx->ctx, MSG_DEBUG, "RSN: added PMKSA cache "
"candidate " MACSTR " prio %d", MAC2STR(bssid), prio);
rsn_preauth_candidate_process(sm);
}
static void wpa_sm_start_preauth(void *eloop_ctx, void *timeout_ctx)
{
struct wpa_sm *sm = eloop_ctx;
rsn_preauth_candidate_process(sm);
}
