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iwd
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eapol: Add provision to use EAPOL-Start

This commit is contained in:
Denis Kenzior 2016-10-11 01:36:48 -05:00
parent a16abfdc92
commit 91d35987fd
2 changed files with 37 additions and 0 deletions
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36
src/eapol.c
View File

@ -726,11 +726,13 @@ struct eapol_sm {
eapol_sm_event_func_t event_func;
void *user_data;
struct l_timeout *timeout;
struct l_timeout *eapol_start_timeout;
bool have_snonce:1;
bool have_replay:1;
bool ptk_complete:1;
bool wpa_ie:1;
bool have_pmk:1;
bool use_eapol_start:1;
struct eap_state *eap;
};
@ -742,6 +744,7 @@ static void eapol_sm_destroy(void *value)
l_free(sm->own_ie);
l_timeout_remove(sm->timeout);
l_timeout_remove(sm->eapol_start_timeout);
if (sm->eap)
eap_free(sm->eap);
@ -920,6 +923,22 @@ static void eapol_timeout(struct l_timeout *timeout, void *user_data)
MPDU_REASON_CODE_4WAY_HANDSHAKE_TIMEOUT);
}
static void send_eapol_start(struct l_timeout *timeout, void *user_data)
{
struct eapol_sm *sm = user_data;
uint8_t buf[sizeof(struct eapol_frame)];
struct eapol_frame *frame = (struct eapol_frame *) buf;
l_timeout_remove(sm->eapol_start_timeout);
sm->eapol_start_timeout = NULL;
frame->header.protocol_version = sm->protocol_version;
frame->header.packet_type = 1;
l_put_be16(0, &frame->header.packet_len);
pae_write(sm->ifindex, sm->aa, sm->spa, frame);
}
static void eapol_handle_ptk_1_of_4(uint32_t ifindex, struct eapol_sm *sm,
const struct eapol_key *ek)
{
@ -1611,6 +1630,11 @@ void eapol_sm_set_8021x_config(struct eapol_sm *sm, struct l_settings *settings)
eap_set_event_func(sm->eap, eapol_eap_event_cb);
}
void eapol_sm_set_use_eapol_start(struct eapol_sm *sm, bool enabled)
{
sm->use_eapol_start = enabled;
}
static void eapol_rx_packet(struct eapol_sm *sm,
const uint8_t *frame, size_t len)
{
@ -1638,6 +1662,9 @@ static void eapol_rx_packet(struct eapol_sm *sm,
switch (eh->packet_type) {
case 0: /* EAPOL-EAP */
l_timeout_remove(sm->eapol_start_timeout);
sm->eapol_start_timeout = 0;
if (!sm->eap) {
/* If we're not configured for EAP, send a NAK */
sm->eap = eap_new(eapol_eap_msg_cb,
@ -1742,6 +1769,15 @@ void eapol_start(uint32_t ifindex, struct eapol_sm *sm)
sm->ifindex = ifindex;
sm->timeout = l_timeout_create(2, eapol_timeout, sm, NULL);
if (sm->use_eapol_start) {
/*
* We start a short timeout, if EAP packets are not received
* from AP, then we send the EAPoL-Start
*/
sm->eapol_start_timeout =
l_timeout_create(1, send_eapol_start, sm, NULL);
}
l_queue_push_head(state_machines, sm);
}

1
src/eapol.h
View File

@ -191,6 +191,7 @@ void eapol_sm_set_authenticator_address(struct eapol_sm *sm, const uint8_t *aa);
void eapol_sm_set_pmk(struct eapol_sm *sm, const uint8_t *pmk);
void eapol_sm_set_8021x_config(struct eapol_sm *sm,
struct l_settings *settings);
void eapol_sm_set_use_eapol_start(struct eapol_sm *sm, bool enabled);
void eapol_sm_set_ap_rsn(struct eapol_sm *sm, const uint8_t *rsn_ie,
size_t len);
bool eapol_sm_set_own_rsn(struct eapol_sm *sm, const uint8_t *rsn_ie,