diff options
Diffstat (limited to 'src/eapol_supp/eapol_supp_sm.c')
| -rw-r--r-- | src/eapol_supp/eapol_supp_sm.c | 71 |
1 files changed, 27 insertions, 44 deletions
diff --git a/src/eapol_supp/eapol_supp_sm.c b/src/eapol_supp/eapol_supp_sm.c index f0cae700..e3bfa38a 100644 --- a/src/eapol_supp/eapol_supp_sm.c +++ b/src/eapol_supp/eapol_supp_sm.c @@ -1,6 +1,6 @@ /* * EAPOL supplicant state machines - * Copyright (c) 2004-2008, Jouni Malinen <j@w1.fi> + * Copyright (c) 2004-2012, Jouni Malinen <j@w1.fi> * * This software may be distributed under the terms of the BSD license. * See README for more details. @@ -139,46 +139,6 @@ struct eapol_sm { }; -#define IEEE8021X_REPLAY_COUNTER_LEN 8 -#define IEEE8021X_KEY_SIGN_LEN 16 -#define IEEE8021X_KEY_IV_LEN 16 - -#define IEEE8021X_KEY_INDEX_FLAG 0x80 -#define IEEE8021X_KEY_INDEX_MASK 0x03 - -#ifdef _MSC_VER -#pragma pack(push, 1) -#endif /* _MSC_VER */ - -struct ieee802_1x_eapol_key { - u8 type; - /* Note: key_length is unaligned */ - u8 key_length[2]; - /* does not repeat within the life of the keying material used to - * encrypt the Key field; 64-bit NTP timestamp MAY be used here */ - u8 replay_counter[IEEE8021X_REPLAY_COUNTER_LEN]; - u8 key_iv[IEEE8021X_KEY_IV_LEN]; /* cryptographically random number */ - u8 key_index; /* key flag in the most significant bit: - * 0 = broadcast (default key), - * 1 = unicast (key mapping key); key index is in the - * 7 least significant bits */ - /* HMAC-MD5 message integrity check computed with MS-MPPE-Send-Key as - * the key */ - u8 key_signature[IEEE8021X_KEY_SIGN_LEN]; - - /* followed by key: if packet body length = 44 + key length, then the - * key field (of key_length bytes) contains the key in encrypted form; - * if packet body length = 44, key field is absent and key_length - * represents the number of least significant octets from - * MS-MPPE-Send-Key attribute to be used as the keying material; - * RC4 key used in encryption = Key-IV + MS-MPPE-Recv-Key */ -} STRUCT_PACKED; - -#ifdef _MSC_VER -#pragma pack(pop) -#endif /* _MSC_VER */ - - static void eapol_sm_txLogoff(struct eapol_sm *sm); static void eapol_sm_txStart(struct eapol_sm *sm); static void eapol_sm_processKey(struct eapol_sm *sm); @@ -664,6 +624,7 @@ struct eap_key_data { static void eapol_sm_processKey(struct eapol_sm *sm) { +#ifndef CONFIG_FIPS struct ieee802_1x_hdr *hdr; struct ieee802_1x_eapol_key *key; struct eap_key_data keydata; @@ -671,6 +632,7 @@ static void eapol_sm_processKey(struct eapol_sm *sm) u8 ekey[IEEE8021X_KEY_IV_LEN + IEEE8021X_ENCR_KEY_LEN]; int key_len, res, sign_key_len, encr_key_len; u16 rx_key_length; + size_t plen; wpa_printf(MSG_DEBUG, "EAPOL: processKey"); if (sm->last_rx_key == NULL) @@ -683,9 +645,12 @@ static void eapol_sm_processKey(struct eapol_sm *sm) return; } + if (sm->last_rx_key_len < sizeof(*hdr) + sizeof(*key)) + return; hdr = (struct ieee802_1x_hdr *) sm->last_rx_key; key = (struct ieee802_1x_eapol_key *) (hdr + 1); - if (sizeof(*hdr) + be_to_host16(hdr->length) > sm->last_rx_key_len) { + plen = be_to_host16(hdr->length); + if (sizeof(*hdr) + plen > sm->last_rx_key_len || plen < sizeof(*key)) { wpa_printf(MSG_WARNING, "EAPOL: Too short EAPOL-Key frame"); return; } @@ -751,7 +716,7 @@ static void eapol_sm_processKey(struct eapol_sm *sm) } wpa_printf(MSG_DEBUG, "EAPOL: EAPOL-Key key signature verified"); - key_len = be_to_host16(hdr->length) - sizeof(*key); + key_len = plen - sizeof(*key); if (key_len > 32 || rx_key_length > 32) { wpa_printf(MSG_WARNING, "EAPOL: Too long key data length %d", key_len ? key_len : rx_key_length); @@ -822,6 +787,7 @@ static void eapol_sm_processKey(struct eapol_sm *sm) sm->ctx->eapol_done_cb(sm->ctx->ctx); } } +#endif /* CONFIG_FIPS */ } @@ -1778,7 +1744,8 @@ static void eapol_sm_set_int(void *ctx, enum eapol_int_var variable, switch (variable) { case EAPOL_idleWhile: sm->idleWhile = value; - eapol_enable_timer_tick(sm); + if (sm->idleWhile > 0) + eapol_enable_timer_tick(sm); break; } } @@ -1946,3 +1913,19 @@ void eapol_sm_deinit(struct eapol_sm *sm) os_free(sm->ctx); os_free(sm); } + + +void eapol_sm_set_ext_pw_ctx(struct eapol_sm *sm, + struct ext_password_data *ext) +{ + if (sm && sm->eap) + eap_sm_set_ext_pw_ctx(sm->eap, ext); +} + + +int eapol_sm_failed(struct eapol_sm *sm) +{ + if (sm == NULL) + return 0; + return !sm->eapSuccess && sm->eapFail; +} |