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eapol: Optimize out rsne sizes

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The RSN IEs contain the sizes of the element inside the data, so it is
not necessary to carry a dedicated size element.
This commit is contained in:
Denis Kenzior 2015-02-24 23:15:20 -06:00
parent 975953dd89
commit 41e82fba77
1 changed files with 7 additions and 5 deletions
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12
src/eapol.c
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@ -427,9 +427,7 @@ struct eapol_sm {
uint8_t anonce[32]; uint8_t anonce[32];
uint8_t ptk[64]; uint8_t ptk[64];
uint8_t *ap_rsn; uint8_t *ap_rsn;
size_t ap_rsn_size;
uint8_t *own_rsn; uint8_t *own_rsn;
size_t own_rsn_size;
bool have_snonce:1; bool have_snonce:1;
bool have_replay:1; bool have_replay:1;
}; };
@ -475,7 +473,9 @@ void eapol_sm_set_pmk(struct eapol_sm *sm, const uint8_t *pmk)
void eapol_sm_set_ap_rsn(struct eapol_sm *sm, const uint8_t *rsn_ie, void eapol_sm_set_ap_rsn(struct eapol_sm *sm, const uint8_t *rsn_ie,
size_t len) size_t len)
{ {
sm->ap_rsn_size = len; if (rsn_ie[1] + 2u != len)
return;
l_free(sm->ap_rsn); l_free(sm->ap_rsn);
sm->ap_rsn = l_memdup(rsn_ie, len); sm->ap_rsn = l_memdup(rsn_ie, len);
} }
@ -483,7 +483,9 @@ void eapol_sm_set_ap_rsn(struct eapol_sm *sm, const uint8_t *rsn_ie,
void eapol_sm_set_own_rsn(struct eapol_sm *sm, const uint8_t *rsn_ie, void eapol_sm_set_own_rsn(struct eapol_sm *sm, const uint8_t *rsn_ie,
size_t len) size_t len)
{ {
sm->own_rsn_size = len; if (rsn_ie[1] + 2u != len)
return;
l_free(sm->own_rsn); l_free(sm->own_rsn);
sm->own_rsn = l_memdup(rsn_ie, len); sm->own_rsn = l_memdup(rsn_ie, len);
} }
@ -520,7 +522,7 @@ static void eapol_handle_ptk_1_of_4(int ifindex, struct eapol_sm *sm,
ek->key_descriptor_version, ek->key_descriptor_version,
sm->replay_counter, sm->replay_counter,
sm->snonce, sm->snonce,
sm->own_rsn_size, sm->own_rsn); sm->own_rsn[1] + 2, sm->own_rsn);
if (!eapol_calculate_mic(ptk->kck, step2, mic)) if (!eapol_calculate_mic(ptk->kck, step2, mic))
goto fail; goto fail;