hostapd/wlantest/sta.c

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/*
* STA list
* Copyright (c) 2010-2015, Jouni Malinen <j@w1.fi>
*
* This software may be distributed under the terms of the BSD license.
* See README for more details.
*/
#include "utils/includes.h"
#include "utils/common.h"
#include "common/defs.h"
#include "common/ieee802_11_defs.h"
#include "common/ieee802_11_common.h"
#include "wlantest.h"
struct wlantest_sta * sta_find(struct wlantest_bss *bss, const u8 *addr)
{
struct wlantest_sta *sta;
dl_list_for_each(sta, &bss->sta, struct wlantest_sta, list) {
if (ether_addr_equal(sta->addr, addr))
return sta;
}
return NULL;
}
struct wlantest_sta * sta_find_mlo(struct wlantest *wt,
struct wlantest_bss *bss, const u8 *addr)
{
struct wlantest_sta *sta;
struct wlantest_bss *obss;
int link_id;
dl_list_for_each(sta, &bss->sta, struct wlantest_sta, list) {
if (ether_addr_equal(sta->addr, addr))
return sta;
if (ether_addr_equal(sta->mld_mac_addr, addr))
return sta;
}
if (is_zero_ether_addr(addr))
return NULL;
dl_list_for_each(sta, &bss->sta, struct wlantest_sta, list) {
for (link_id = 0; link_id < MAX_NUM_MLO_LINKS; link_id++) {
if (ether_addr_equal(sta->link_addr[link_id], addr))
return sta;
}
}
dl_list_for_each(obss, &wt->bss, struct wlantest_bss, list) {
if (obss == bss)
continue;
if (!is_zero_ether_addr(bss->mld_mac_addr) &&
!ether_addr_equal(obss->mld_mac_addr, bss->mld_mac_addr))
continue;
dl_list_for_each(sta, &obss->sta, struct wlantest_sta, list) {
if (ether_addr_equal(sta->addr, addr))
return sta;
if (ether_addr_equal(sta->mld_mac_addr, addr))
return sta;
for (link_id = 0; link_id < MAX_NUM_MLO_LINKS;
link_id++) {
if (ether_addr_equal(sta->link_addr[link_id],
addr))
return sta;
}
}
}
return NULL;
}
struct wlantest_sta * sta_get(struct wlantest_bss *bss, const u8 *addr)
{
struct wlantest_sta *sta;
if (addr[0] & 0x01)
return NULL; /* Skip group addressed frames */
sta = sta_find(bss, addr);
if (sta)
return sta;
sta = os_zalloc(sizeof(*sta));
if (sta == NULL)
return NULL;
os_memset(sta->seq_ctrl_to_sta, 0xff, sizeof(sta->seq_ctrl_to_sta));
os_memset(sta->seq_ctrl_to_ap, 0xff, sizeof(sta->seq_ctrl_to_ap));
sta->bss = bss;
os_memcpy(sta->addr, addr, ETH_ALEN);
dl_list_add(&bss->sta, &sta->list);
wpa_printf(MSG_DEBUG, "Discovered new STA " MACSTR " in BSS " MACSTR
" (MLD " MACSTR ")",
MAC2STR(sta->addr),
MAC2STR(bss->bssid), MAC2STR(bss->mld_mac_addr));
return sta;
}
void sta_deinit(struct wlantest_sta *sta)
{
dl_list_del(&sta->list);
os_free(sta->assocreq_ies);
os_free(sta);
}
static void sta_update_assoc_ml(struct wlantest_sta *sta,
struct ieee802_11_elems *elems)
{
const u8 *mld_addr;
if (!elems->basic_mle)
return;
mld_addr = get_basic_mle_mld_addr(elems->basic_mle,
elems->basic_mle_len);
if (!mld_addr) {
wpa_printf(MSG_INFO, "MLO: Invalid Basic Multi-Link element");
return;
}
wpa_printf(MSG_DEBUG, "STA MLD Address: " MACSTR, MAC2STR(mld_addr));
os_memcpy(sta->mld_mac_addr, mld_addr, ETH_ALEN);
}
void sta_update_assoc(struct wlantest_sta *sta, struct ieee802_11_elems *elems)
{
struct wpa_ie_data data;
struct wlantest_bss *bss = sta->bss;
if (elems->wpa_ie && !bss->wpaie[0] &&
(bss->beacon_seen || bss->proberesp_seen)) {
wpa_printf(MSG_INFO, "WPA IE included in Association Request "
"frame from " MACSTR " even though BSS does not "
"use WPA - ignore IE",
MAC2STR(sta->addr));
elems->wpa_ie = NULL;
}
if (elems->rsn_ie && !bss->rsnie[0] &&
(bss->beacon_seen || bss->proberesp_seen)) {
wpa_printf(MSG_INFO, "RSN IE included in Association Request "
"frame from " MACSTR " even though BSS does not "
"use RSN - ignore IE",
MAC2STR(sta->addr));
elems->rsn_ie = NULL;
}
if (elems->osen && !bss->osenie[0] &&
(bss->beacon_seen || bss->proberesp_seen)) {
wpa_printf(MSG_INFO, "OSEN IE included in Association Request "
"frame from " MACSTR " even though BSS does not "
"use OSEN - ignore IE",
MAC2STR(sta->addr));
elems->osen = NULL;
}
if (elems->wpa_ie && elems->rsn_ie) {
wpa_printf(MSG_INFO, "Both WPA IE and RSN IE included in "
"Association Request frame from " MACSTR,
MAC2STR(sta->addr));
}
if (elems->rsn_ie) {
wpa_hexdump(MSG_DEBUG, "RSN IE", elems->rsn_ie - 2,
elems->rsn_ie_len + 2);
os_memcpy(sta->rsnie, elems->rsn_ie - 2,
elems->rsn_ie_len + 2);
if (wpa_parse_wpa_ie_rsn(sta->rsnie, 2 + sta->rsnie[1], &data)
< 0) {
wpa_printf(MSG_INFO, "Failed to parse RSN IE from "
MACSTR, MAC2STR(sta->addr));
}
} else if (elems->wpa_ie) {
wpa_hexdump(MSG_DEBUG, "WPA IE", elems->wpa_ie - 2,
elems->wpa_ie_len + 2);
os_memcpy(sta->rsnie, elems->wpa_ie - 2,
elems->wpa_ie_len + 2);
if (wpa_parse_wpa_ie_wpa(sta->rsnie, 2 + sta->rsnie[1], &data)
< 0) {
wpa_printf(MSG_INFO, "Failed to parse WPA IE from "
MACSTR, MAC2STR(sta->addr));
}
} else if (elems->osen) {
wpa_hexdump(MSG_DEBUG, "OSEN IE", elems->osen - 2,
elems->osen_len + 2);
os_memcpy(sta->osenie, elems->osen - 2, elems->osen_len + 2);
sta->proto = WPA_PROTO_OSEN;
sta->pairwise_cipher = WPA_CIPHER_CCMP;
sta->key_mgmt = WPA_KEY_MGMT_OSEN;
sta->rsn_capab = 0;
goto skip_rsn_wpa;
} else {
sta->rsnie[0] = 0;
sta->proto = 0;
sta->pairwise_cipher = 0;
sta->key_mgmt = 0;
sta->rsn_capab = 0;
if (sta->assocreq_capab_info & WLAN_CAPABILITY_PRIVACY)
sta->pairwise_cipher = WPA_CIPHER_WEP40;
goto skip_rsn_wpa;
}
sta->proto = data.proto;
sta->pairwise_cipher = data.pairwise_cipher;
sta->key_mgmt = data.key_mgmt;
sta->rsn_capab = data.capabilities;
if (bss->proto && (sta->proto & bss->proto) == 0) {
wpa_printf(MSG_INFO, "Mismatch in WPA/WPA2 proto: STA "
MACSTR " 0x%x BSS " MACSTR " 0x%x",
MAC2STR(sta->addr), sta->proto,
MAC2STR(bss->bssid), bss->proto);
}
if (bss->pairwise_cipher &&
(sta->pairwise_cipher & bss->pairwise_cipher) == 0) {
wpa_printf(MSG_INFO, "Mismatch in pairwise cipher: STA "
MACSTR " 0x%x BSS " MACSTR " 0x%x",
MAC2STR(sta->addr), sta->pairwise_cipher,
MAC2STR(bss->bssid), bss->pairwise_cipher);
}
if (sta->proto && data.group_cipher != bss->group_cipher &&
bss->ies_set) {
wpa_printf(MSG_INFO, "Mismatch in group cipher: STA "
MACSTR " 0x%x != BSS " MACSTR " 0x%x",
MAC2STR(sta->addr), data.group_cipher,
MAC2STR(bss->bssid), bss->group_cipher);
}
if ((bss->rsn_capab & WPA_CAPABILITY_MFPR) &&
!(sta->rsn_capab & WPA_CAPABILITY_MFPC)) {
wpa_printf(MSG_INFO, "STA " MACSTR " tries to associate "
"without MFP to BSS " MACSTR " that advertises "
"MFPR", MAC2STR(sta->addr), MAC2STR(bss->bssid));
}
if ((sta->rsn_capab & WPA_CAPABILITY_OCVC) &&
!(sta->rsn_capab & WPA_CAPABILITY_MFPC)) {
wpa_printf(MSG_INFO, "STA " MACSTR " tries to associate "
"without MFP to BSS " MACSTR " while supporting "
"OCV", MAC2STR(sta->addr), MAC2STR(bss->bssid));
}
skip_rsn_wpa:
wpa_printf(MSG_INFO, "STA " MACSTR
" proto=%s%s%s%s"
"pairwise=%s%s%s%s%s%s%s"
"key_mgmt=%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s"
"rsn_capab=%s%s%s%s%s%s%s%s%s%s",
MAC2STR(sta->addr),
sta->proto == 0 ? "OPEN " : "",
sta->proto & WPA_PROTO_WPA ? "WPA " : "",
sta->proto & WPA_PROTO_RSN ? "WPA2 " : "",
sta->proto & WPA_PROTO_OSEN ? "OSEN " : "",
sta->pairwise_cipher == 0 ? "N/A " : "",
sta->pairwise_cipher & WPA_CIPHER_NONE ? "NONE " : "",
sta->pairwise_cipher & WPA_CIPHER_TKIP ? "TKIP " : "",
sta->pairwise_cipher & WPA_CIPHER_CCMP ? "CCMP " : "",
bss->pairwise_cipher & WPA_CIPHER_CCMP_256 ? "CCMP-256 " :
"",
bss->pairwise_cipher & WPA_CIPHER_GCMP ? "GCMP " : "",
bss->pairwise_cipher & WPA_CIPHER_GCMP_256 ? "GCMP-256 " :
"",
sta->key_mgmt == 0 ? "N/A " : "",
sta->key_mgmt & WPA_KEY_MGMT_IEEE8021X ? "EAP " : "",
sta->key_mgmt & WPA_KEY_MGMT_PSK ? "PSK " : "",
sta->key_mgmt & WPA_KEY_MGMT_WPA_NONE ? "WPA-NONE " : "",
sta->key_mgmt & WPA_KEY_MGMT_FT_IEEE8021X ? "FT-EAP " : "",
sta->key_mgmt & WPA_KEY_MGMT_FT_PSK ? "FT-PSK " : "",
sta->key_mgmt & WPA_KEY_MGMT_IEEE8021X_SHA256 ?
"EAP-SHA256 " : "",
sta->key_mgmt & WPA_KEY_MGMT_PSK_SHA256 ?
"PSK-SHA256 " : "",
sta->key_mgmt & WPA_KEY_MGMT_OWE ? "OWE " : "",
sta->key_mgmt & WPA_KEY_MGMT_PASN ? "PASN " : "",
sta->key_mgmt & WPA_KEY_MGMT_OSEN ? "OSEN " : "",
sta->key_mgmt & WPA_KEY_MGMT_DPP ? "DPP " : "",
sta->key_mgmt & WPA_KEY_MGMT_IEEE8021X_SUITE_B ?
"EAP-SUITE-B " : "",
sta->key_mgmt & WPA_KEY_MGMT_IEEE8021X_SUITE_B_192 ?
"EAP-SUITE-B-192 " : "",
sta->key_mgmt & WPA_KEY_MGMT_IEEE8021X_SHA384 ?
"EAP-SHA384 " : "",
sta->rsn_capab & WPA_CAPABILITY_PREAUTH ? "PREAUTH " : "",
sta->rsn_capab & WPA_CAPABILITY_NO_PAIRWISE ?
"NO_PAIRWISE " : "",
sta->rsn_capab & WPA_CAPABILITY_MFPR ? "MFPR " : "",
sta->rsn_capab & WPA_CAPABILITY_MFPC ? "MFPC " : "",
sta->rsn_capab & WPA_CAPABILITY_PEERKEY_ENABLED ?
"PEERKEY " : "",
sta->rsn_capab & WPA_CAPABILITY_SPP_A_MSDU_CAPABLE ?
"SPP-A-MSDU-CAPAB " : "",
sta->rsn_capab & WPA_CAPABILITY_SPP_A_MSDU_REQUIRED ?
"SPP-A-MSDU-REQUIRED " : "",
sta->rsn_capab & WPA_CAPABILITY_PBAC ? "PBAC " : "",
sta->rsn_capab & WPA_CAPABILITY_OCVC ? "OCVC " : "",
sta->rsn_capab & WPA_CAPABILITY_EXT_KEY_ID_FOR_UNICAST ?
"ExtKeyID " : "");
sta_update_assoc_ml(sta, elems);
}
static void sta_copy_ptk(struct wlantest_sta *sta, struct wpa_ptk *ptk)
{
os_memcpy(&sta->ptk, ptk, sizeof(*ptk));
sta->ptk_set = 1;
os_memset(sta->rsc_tods, 0, sizeof(sta->rsc_tods));
os_memset(sta->rsc_fromds, 0, sizeof(sta->rsc_fromds));
}
void sta_new_ptk(struct wlantest *wt, struct wlantest_sta *sta,
struct wpa_ptk *ptk)
{
struct wlantest_bss *bss;
struct wlantest_sta *osta;
add_note(wt, MSG_DEBUG, "Derived new PTK");
sta_copy_ptk(sta, ptk);
wpa_hexdump(MSG_DEBUG, "PTK:KCK", sta->ptk.kck, sta->ptk.kck_len);
wpa_hexdump(MSG_DEBUG, "PTK:KEK", sta->ptk.kek, sta->ptk.kek_len);
wpa_hexdump(MSG_DEBUG, "PTK:TK", sta->ptk.tk, sta->ptk.tk_len);
dl_list_for_each(bss, &wt->bss, struct wlantest_bss, list) {
dl_list_for_each(osta, &bss->sta, struct wlantest_sta, list) {
bool match = false;
int link_id;
if (osta == sta)
continue;
if (ether_addr_equal(sta->addr, osta->addr))
match = true;
for (link_id = 0; !match && link_id < MAX_NUM_MLO_LINKS;
link_id++) {
if (ether_addr_equal(osta->link_addr[link_id],
sta->addr))
match = true;
}
if (!match)
continue;
if (!ether_addr_equal(sta->bss->mld_mac_addr,
osta->bss->mld_mac_addr))
continue;
wpa_printf(MSG_DEBUG,
"Add PTK to another MLO STA entry " MACSTR
" (MLD " MACSTR " --> " MACSTR ") in BSS "
MACSTR " (MLD " MACSTR " --> " MACSTR ")",
MAC2STR(osta->addr),
MAC2STR(osta->mld_mac_addr),
MAC2STR(sta->mld_mac_addr),
MAC2STR(bss->bssid),
MAC2STR(bss->mld_mac_addr),
MAC2STR(sta->bss->mld_mac_addr));
sta_copy_ptk(osta, ptk);
os_memcpy(osta->mld_mac_addr, sta->mld_mac_addr,
ETH_ALEN);
}
}
}