jeltz
/
hostap
1
0
Fork 0
Code Issues Pull Requests Projects Releases Wiki Activity

wlantest: Add more pcapng notes on EAPOL processing

Browse Source 
Some of the MIC validation steps were not logged in the pcapng notes.
Add these to make the entries more consistent and to provide more
information to ease debugging.

Signed-hostap: Jouni Malinen <j@w1.fi>
master
Jouni Malinen 11 years ago
parent a0530dff5b
commit c41e1d7cac
1 changed files with 32 additions and 28 deletions
Show Stats Download Patch File Download Diff File

60
wlantest/rx_eapol.c
Unescape Escape View File

@ -410,8 +410,8 @@ static void learn_kde_keys(struct wlantest *wt, struct wlantest_bss *bss,
if (ie.gtk_len >= 2 && ie.gtk_len <= 2 + 32) {
int id;
id = ie.gtk[0] & 0x03;
wpa_printf(MSG_DEBUG, "GTK KeyID=%u tx=%u",
id, !!(ie.gtk[0] & 0x04));
add_note(wt, MSG_DEBUG, "GTK KeyID=%u tx=%u",
id, !!(ie.gtk[0] & 0x04));
if ((ie.gtk[0] & 0xf8) || ie.gtk[1]) {
add_note(wt, MSG_INFO,
"GTK KDE: Reserved field set: "
@ -449,7 +449,7 @@ static void learn_kde_keys(struct wlantest *wt, struct wlantest_bss *bss,
"Unexpected IGTK KeyID %u", id);
} else {
const u8 *ipn;
wpa_printf(MSG_DEBUG, "IGTK KeyID %u", id);
add_note(wt, MSG_DEBUG, "IGTK KeyID %u", id);
wpa_hexdump(MSG_DEBUG, "IPN", ie.igtk + 2, 6);
wpa_hexdump(MSG_DEBUG, "IGTK", ie.igtk + 8,
16);
@ -653,28 +653,30 @@ static void rx_data_eapol_key_4_of_4(struct wlantest *wt, const u8 *dst,
eapol = (const struct ieee802_1x_hdr *) data;
hdr = (const struct wpa_eapol_key *) (eapol + 1);
if (!is_zero(hdr->key_rsc, 8)) {
wpa_printf(MSG_INFO, "EAPOL-Key 4/4 from " MACSTR " used "
"non-zero Key RSC", MAC2STR(src));
add_note(wt, MSG_INFO, "EAPOL-Key 4/4 from " MACSTR " used "
"non-zero Key RSC", MAC2STR(src));
}
key_info = WPA_GET_BE16(hdr->key_info);
if (!sta->ptk_set && !sta->tptk_set) {
wpa_printf(MSG_DEBUG, "No PTK known to process EAPOL-Key 4/4");
add_note(wt, MSG_DEBUG,
"No PTK known to process EAPOL-Key 4/4");
return;
}
kck = sta->ptk.kck;
if (sta->tptk_set) {
wpa_printf(MSG_DEBUG, "Use TPTK for validation EAPOL-Key MIC");
add_note(wt, MSG_DEBUG,
"Use TPTK for validation EAPOL-Key MIC");
kck = sta->tptk.kck;
}
if (check_mic(kck, key_info & WPA_KEY_INFO_TYPE_MASK, data, len) < 0) {
wpa_printf(MSG_INFO, "Mismatch in EAPOL-Key 4/4 MIC");
add_note(wt, MSG_INFO, "Mismatch in EAPOL-Key 4/4 MIC");
return;
}
wpa_printf(MSG_DEBUG, "Valid MIC found in EAPOL-Key 4/4");
add_note(wt, MSG_DEBUG, "Valid MIC found in EAPOL-Key 4/4");
if (sta->tptk_set) {
wpa_printf(MSG_DEBUG, "Update PTK (rekeying)");
add_note(wt, MSG_DEBUG, "Update PTK (rekeying)");
os_memcpy(&sta->ptk, &sta->tptk, sizeof(sta->ptk));
sta->ptk_set = 1;
sta->tptk_set = 0;
@ -709,28 +711,29 @@ static void rx_data_eapol_key_1_of_2(struct wlantest *wt, const u8 *dst,
key_info = WPA_GET_BE16(hdr->key_info);
if (!sta->ptk_set) {
wpa_printf(MSG_DEBUG, "No PTK known to process EAPOL-Key 1/2");
add_note(wt, MSG_DEBUG,
"No PTK known to process EAPOL-Key 1/2");
return;
}
if (sta->ptk_set &&
check_mic(sta->ptk.kck, key_info & WPA_KEY_INFO_TYPE_MASK,
data, len) < 0) {
wpa_printf(MSG_INFO, "Mismatch in EAPOL-Key 1/2 MIC");
add_note(wt, MSG_INFO, "Mismatch in EAPOL-Key 1/2 MIC");
return;
}
wpa_printf(MSG_DEBUG, "Valid MIC found in EAPOL-Key 1/2");
add_note(wt, MSG_DEBUG, "Valid MIC found in EAPOL-Key 1/2");
if (sta->proto & WPA_PROTO_RSN &&
!(key_info & WPA_KEY_INFO_ENCR_KEY_DATA)) {
wpa_printf(MSG_INFO, "EAPOL-Key 1/2 without EncrKeyData bit");
add_note(wt, MSG_INFO, "EAPOL-Key 1/2 without EncrKeyData bit");
return;
}
ver = key_info & WPA_KEY_INFO_TYPE_MASK;
decrypted = decrypt_eapol_key_data(wt, sta->ptk.kek, ver, hdr,
&decrypted_len);
if (decrypted == NULL) {
wpa_printf(MSG_INFO, "Failed to decrypt EAPOL-Key Key Data");
add_note(wt, MSG_INFO, "Failed to decrypt EAPOL-Key Key Data");
return;
}
wpa_hexdump(MSG_DEBUG, "Decrypted EAPOL-Key Key Data",
@ -783,7 +786,7 @@ static void rx_data_eapol_key_1_of_2(struct wlantest *wt, const u8 *dst,
int id;
id = (key_info & WPA_KEY_INFO_KEY_INDEX_MASK) >>
WPA_KEY_INFO_KEY_INDEX_SHIFT;
wpa_printf(MSG_DEBUG, "GTK key index %d", id);
add_note(wt, MSG_DEBUG, "GTK key index %d", id);
wpa_hexdump(MSG_DEBUG, "GTK", decrypted,
decrypted_len);
bss->gtk_len[id] = decrypted_len;
@ -796,9 +799,9 @@ static void rx_data_eapol_key_1_of_2(struct wlantest *wt, const u8 *dst,
bss->rsc[id][5] = rsc[0];
wpa_hexdump(MSG_DEBUG, "RSC", bss->rsc[id], 6);
} else {
wpa_printf(MSG_INFO, "Unexpected WPA Key Data length "
"in Group Key msg 1/2 from " MACSTR,
MAC2STR(src));
add_note(wt, MSG_INFO, "Unexpected WPA Key Data length "
"in Group Key msg 1/2 from " MACSTR,
MAC2STR(src));
}
}
os_free(decrypted);
@ -826,23 +829,24 @@ static void rx_data_eapol_key_2_of_2(struct wlantest *wt, const u8 *dst,
eapol = (const struct ieee802_1x_hdr *) data;
hdr = (const struct wpa_eapol_key *) (eapol + 1);
if (!is_zero(hdr->key_rsc, 8)) {
wpa_printf(MSG_INFO, "EAPOL-Key 2/2 from " MACSTR " used "
"non-zero Key RSC", MAC2STR(src));
add_note(wt, MSG_INFO, "EAPOL-Key 2/2 from " MACSTR " used "
"non-zero Key RSC", MAC2STR(src));
}
key_info = WPA_GET_BE16(hdr->key_info);
if (!sta->ptk_set) {
wpa_printf(MSG_DEBUG, "No PTK known to process EAPOL-Key 2/2");
add_note(wt, MSG_DEBUG,
"No PTK known to process EAPOL-Key 2/2");
return;
}
if (sta->ptk_set &&
check_mic(sta->ptk.kck, key_info & WPA_KEY_INFO_TYPE_MASK,
data, len) < 0) {
wpa_printf(MSG_INFO, "Mismatch in EAPOL-Key 2/2 MIC");
add_note(wt, MSG_INFO, "Mismatch in EAPOL-Key 2/2 MIC");
return;
}
wpa_printf(MSG_DEBUG, "Valid MIC found in EAPOL-Key 2/2");
add_note(wt, MSG_DEBUG, "Valid MIC found in EAPOL-Key 2/2");
}
@ -861,8 +865,8 @@ static void rx_data_eapol_key(struct wlantest *wt, const u8 *dst,
wpa_hexdump(MSG_MSGDUMP, "EAPOL-Key",
(const u8 *) hdr, len - sizeof(*eapol));
if (len < sizeof(*hdr)) {
wpa_printf(MSG_INFO, "Too short EAPOL-Key frame from " MACSTR,
MAC2STR(src));
add_note(wt, MSG_INFO, "Too short EAPOL-Key frame from " MACSTR,
MAC2STR(src));
return;
}
@ -885,8 +889,8 @@ static void rx_data_eapol_key(struct wlantest *wt, const u8 *dst,
key_data_length = WPA_GET_BE16(hdr->key_data_length);
key_data = (const u8 *) (hdr + 1);
if (key_data + key_data_length > data + len) {
wpa_printf(MSG_INFO, "Truncated EAPOL-Key from " MACSTR,
MAC2STR(src));
add_note(wt, MSG_INFO, "Truncated EAPOL-Key from " MACSTR,
MAC2STR(src));
return;
}
if (key_data + key_data_length < data + len) {

Write Preview
Loading…
Cancel
Save