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Process Transition Disable KDE in station mode

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Check whether the Transition Disable KDE is received from an
authenticated AP and if so, whether it contains valid indication for
disabling a transition mode. If that is the case, update the local
network profile by removing the less secure options.

Signed-off-by: Jouni Malinen <jouni@codeaurora.org>
This commit is contained in:
Jouni Malinen 2020-03-26 00:10:16 +02:00 • committed by Jouni Malinen
parent 82cc0b0cc2
commit 9d1857cf35
7 changed files with 95 additions and 0 deletions
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10
src/common/wpa_common.c
View file

@ -2784,6 +2784,16 @@ static int wpa_parse_generic(const u8 *pos, struct wpa_eapol_ie_parse *ie)
return 0;
}
if (pos[1] >= RSN_SELECTOR_LEN + 1 &&
RSN_SELECTOR_GET(pos + 2) == WFA_KEY_DATA_TRANSITION_DISABLE) {
ie->transition_disable = pos + 2 + RSN_SELECTOR_LEN;
ie->transition_disable_len = pos[1] - RSN_SELECTOR_LEN;
wpa_hexdump(MSG_DEBUG,
"WPA: Transition Disable KDE in EAPOL-Key",
pos, pos[1] + 2);
return 0;
}
return 0;
}

2
src/common/wpa_common.h
View file

@ -516,6 +516,8 @@ struct wpa_eapol_ie_parse {
size_t ftie_len;
const u8 *ip_addr_req;
const u8 *ip_addr_alloc;
const u8 *transition_disable;
size_t transition_disable_len;
const u8 *oci;
size_t oci_len;
const u8 *osen;

3
src/common/wpa_ctrl.h
View file

@ -380,6 +380,9 @@ extern "C" {
#define WDS_STA_INTERFACE_ADDED "WDS-STA-INTERFACE-ADDED "
#define WDS_STA_INTERFACE_REMOVED "WDS-STA-INTERFACE-REMOVED "
/* Transition mode disabled indication - followed by bitmap */
#define TRANSITION_DISABLE "TRANSITION-DISABLE "
#ifndef BIT
#define BIT(x) (1U << (x))
#endif