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/*
* STA list
* Copyright (c) 2010, 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 (os_memcmp(sta->addr, addr, ETH_ALEN) == 0)
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,
MAC2STR(sta->addr), MAC2STR(bss->bssid));
return sta;
}
void sta_deinit(struct wlantest_sta *sta)
{
dl_list_del(&sta->list);
os_free(sta->assocreq_ies);
os_free(sta);
}
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]) {
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]) {
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->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 {
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) {
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));
}
skip_rsn_wpa:
wpa_printf(MSG_INFO, "STA " MACSTR
" proto=%s%s%s"
"pairwise=%s%s%s%s"
"key_mgmt=%s%s%s%s%s%s%s%s"
"rsn_capab=%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->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 " : "",
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->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 " : "");
}
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