wlantest/sta.c

   1 /*
   2  * STA list
   3  * Copyright (c) 2010, Jouni Malinen <j@w1.fi>
   4  *
   5  * This software may be distributed under the terms of the BSD license.
   6  * See README for more details.
   7  */
   8
   9 #include "utils/includes.h"
  10
  11 #include "utils/common.h"
  12 #include "common/defs.h"
  13 #include "common/ieee802_11_defs.h"
  14 #include "common/ieee802_11_common.h"
  15 #include "wlantest.h"
  16
  17
  18 struct wlantest_sta * sta_find(struct wlantest_bss *bss, const u8 *addr)
  19 {
  20         struct wlantest_sta *sta;
  21
  22         dl_list_for_each(sta, &bss->sta, struct wlantest_sta, list) {
  23                 if (os_memcmp(sta->addr, addr, ETH_ALEN) == 0)
  24                         return sta;
  25         }
  26
  27         return NULL;
  28 }
  29
  30
  31 struct wlantest_sta * sta_get(struct wlantest_bss *bss, const u8 *addr)
  32 {
  33         struct wlantest_sta *sta;
  34
  35         if (addr[0] & 0x01)
  36                 return NULL; /* Skip group addressed frames */
  37
  38         sta = sta_find(bss, addr);
  39         if (sta)
  40                 return sta;
  41
  42         sta = os_zalloc(sizeof(*sta));
  43         if (sta == NULL)
  44                 return NULL;
  45         os_memset(sta->seq_ctrl_to_sta, 0xff, sizeof(sta->seq_ctrl_to_sta));
  46         os_memset(sta->seq_ctrl_to_ap, 0xff, sizeof(sta->seq_ctrl_to_ap));
  47         sta->bss = bss;
  48         os_memcpy(sta->addr, addr, ETH_ALEN);
  49         dl_list_add(&bss->sta, &sta->list);
  50         wpa_printf(MSG_DEBUG, "Discovered new STA " MACSTR " in BSS " MACSTR,
  51                    MAC2STR(sta->addr), MAC2STR(bss->bssid));
  52         return sta;
  53 }
  54
  55
  56 void sta_deinit(struct wlantest_sta *sta)
  57 {
  58         dl_list_del(&sta->list);
  59         os_free(sta->assocreq_ies);
  60         os_free(sta);
  61 }
  62
  63
  64 void sta_update_assoc(struct wlantest_sta *sta, struct ieee802_11_elems *elems)
  65 {
  66         struct wpa_ie_data data;
  67         struct wlantest_bss *bss = sta->bss;
  68
  69         if (elems->wpa_ie && !bss->wpaie[0]) {
  70                 wpa_printf(MSG_INFO, "WPA IE included in Association Request "
  71                            "frame from " MACSTR " even though BSS does not "
  72                            "use WPA - ignore IE",
  73                            MAC2STR(sta->addr));
  74                 elems->wpa_ie = NULL;
  75         }
  76
  77         if (elems->rsn_ie && !bss->rsnie[0]) {
  78                 wpa_printf(MSG_INFO, "RSN IE included in Association Request "
  79                            "frame from " MACSTR " even though BSS does not "
  80                            "use RSN - ignore IE",
  81                            MAC2STR(sta->addr));
  82                 elems->rsn_ie = NULL;
  83         }
  84
  85         if (elems->osen && !bss->osenie[0]) {
  86                 wpa_printf(MSG_INFO, "OSEN IE included in Association Request "
  87                            "frame from " MACSTR " even though BSS does not "
  88                            "use OSEN - ignore IE",
  89                            MAC2STR(sta->addr));
  90                 elems->osen = NULL;
  91         }
  92
  93         if (elems->wpa_ie && elems->rsn_ie) {
  94                 wpa_printf(MSG_INFO, "Both WPA IE and RSN IE included in "
  95                            "Association Request frame from " MACSTR,
  96                            MAC2STR(sta->addr));
  97         }
  98
  99         if (elems->rsn_ie) {
 100                 wpa_hexdump(MSG_DEBUG, "RSN IE", elems->rsn_ie - 2,
 101                             elems->rsn_ie_len + 2);
 102                 os_memcpy(sta->rsnie, elems->rsn_ie - 2,
 103                           elems->rsn_ie_len + 2);
 104                 if (wpa_parse_wpa_ie_rsn(sta->rsnie, 2 + sta->rsnie[1], &data)
 105                     < 0) {
 106                         wpa_printf(MSG_INFO, "Failed to parse RSN IE from "
 107                                    MACSTR, MAC2STR(sta->addr));
 108                 }
 109         } else if (elems->wpa_ie) {
 110                 wpa_hexdump(MSG_DEBUG, "WPA IE", elems->wpa_ie - 2,
 111                             elems->wpa_ie_len + 2);
 112                 os_memcpy(sta->rsnie, elems->wpa_ie - 2,
 113                           elems->wpa_ie_len + 2);
 114                 if (wpa_parse_wpa_ie_wpa(sta->rsnie, 2 + sta->rsnie[1], &data)
 115                     < 0) {
 116                         wpa_printf(MSG_INFO, "Failed to parse WPA IE from "
 117                                    MACSTR, MAC2STR(sta->addr));
 118                 }
 119         } else if (elems->osen) {
 120                 wpa_hexdump(MSG_DEBUG, "OSEN IE", elems->osen - 2,
 121                             elems->osen_len + 2);
 122                 os_memcpy(sta->osenie, elems->osen - 2, elems->osen_len + 2);
 123                 sta->proto = WPA_PROTO_OSEN;
 124                 sta->pairwise_cipher = WPA_CIPHER_CCMP;
 125                 sta->key_mgmt = WPA_KEY_MGMT_OSEN;
 126                 sta->rsn_capab = 0;
 127                 goto skip_rsn_wpa;
 128         } else {
 129                 sta->rsnie[0] = 0;
 130                 sta->proto = 0;
 131                 sta->pairwise_cipher = 0;
 132                 sta->key_mgmt = 0;
 133                 sta->rsn_capab = 0;
 134                 if (sta->assocreq_capab_info & WLAN_CAPABILITY_PRIVACY)
 135                         sta->pairwise_cipher = WPA_CIPHER_WEP40;
 136                 goto skip_rsn_wpa;
 137         }
 138
 139         sta->proto = data.proto;
 140         sta->pairwise_cipher = data.pairwise_cipher;
 141         sta->key_mgmt = data.key_mgmt;
 142         sta->rsn_capab = data.capabilities;
 143         if (bss->proto && (sta->proto & bss->proto) == 0) {
 144                 wpa_printf(MSG_INFO, "Mismatch in WPA/WPA2 proto: STA "
 145                            MACSTR " 0x%x  BSS " MACSTR " 0x%x",
 146                            MAC2STR(sta->addr), sta->proto,
 147                            MAC2STR(bss->bssid), bss->proto);
 148         }
 149         if (bss->pairwise_cipher &&
 150             (sta->pairwise_cipher & bss->pairwise_cipher) == 0) {
 151                 wpa_printf(MSG_INFO, "Mismatch in pairwise cipher: STA "
 152                            MACSTR " 0x%x  BSS " MACSTR " 0x%x",
 153                            MAC2STR(sta->addr), sta->pairwise_cipher,
 154                            MAC2STR(bss->bssid), bss->pairwise_cipher);
 155         }
 156         if (sta->proto && data.group_cipher != bss->group_cipher) {
 157                 wpa_printf(MSG_INFO, "Mismatch in group cipher: STA "
 158                            MACSTR " 0x%x != BSS " MACSTR " 0x%x",
 159                            MAC2STR(sta->addr), data.group_cipher,
 160                            MAC2STR(bss->bssid), bss->group_cipher);
 161         }
 162         if ((bss->rsn_capab & WPA_CAPABILITY_MFPR) &&
 163             !(sta->rsn_capab & WPA_CAPABILITY_MFPC)) {
 164                 wpa_printf(MSG_INFO, "STA " MACSTR " tries to associate "
 165                            "without MFP to BSS " MACSTR " that advertises "
 166                            "MFPR", MAC2STR(sta->addr), MAC2STR(bss->bssid));
 167         }
 168
 169 skip_rsn_wpa:
 170         wpa_printf(MSG_INFO, "STA " MACSTR
 171                    " proto=%s%s%s%s"
 172                    "pairwise=%s%s%s%s%s%s%s"
 173                    "key_mgmt=%s%s%s%s%s%s%s%s%s"
 174                    "rsn_capab=%s%s%s%s%s",
 175                    MAC2STR(sta->addr),
 176                    sta->proto == 0 ? "OPEN " : "",
 177                    sta->proto & WPA_PROTO_WPA ? "WPA " : "",
 178                    sta->proto & WPA_PROTO_RSN ? "WPA2 " : "",
 179                    sta->proto & WPA_PROTO_OSEN ? "OSEN " : "",
 180                    sta->pairwise_cipher == 0 ? "N/A " : "",
 181                    sta->pairwise_cipher & WPA_CIPHER_NONE ? "NONE " : "",
 182                    sta->pairwise_cipher & WPA_CIPHER_TKIP ? "TKIP " : "",
 183                    sta->pairwise_cipher & WPA_CIPHER_CCMP ? "CCMP " : "",
 184                    bss->pairwise_cipher & WPA_CIPHER_CCMP_256 ? "CCMP-256 " :
 185                    "",
 186                    bss->pairwise_cipher & WPA_CIPHER_GCMP ? "GCMP " : "",
 187                    bss->pairwise_cipher & WPA_CIPHER_GCMP_256 ? "GCMP-256 " :
 188                    "",
 189                    sta->key_mgmt == 0 ? "N/A " : "",
 190                    sta->key_mgmt & WPA_KEY_MGMT_IEEE8021X ? "EAP " : "",
 191                    sta->key_mgmt & WPA_KEY_MGMT_PSK ? "PSK " : "",
 192                    sta->key_mgmt & WPA_KEY_MGMT_WPA_NONE ? "WPA-NONE " : "",
 193                    sta->key_mgmt & WPA_KEY_MGMT_FT_IEEE8021X ? "FT-EAP " : "",
 194                    sta->key_mgmt & WPA_KEY_MGMT_FT_PSK ? "FT-PSK " : "",
 195                    sta->key_mgmt & WPA_KEY_MGMT_IEEE8021X_SHA256 ?
 196                    "EAP-SHA256 " : "",
 197                    sta->key_mgmt & WPA_KEY_MGMT_PSK_SHA256 ?
 198                    "PSK-SHA256 " : "",
 199                    sta->key_mgmt & WPA_KEY_MGMT_OSEN ? "OSEN " : "",
 200                    sta->rsn_capab & WPA_CAPABILITY_PREAUTH ? "PREAUTH " : "",
 201                    sta->rsn_capab & WPA_CAPABILITY_NO_PAIRWISE ?
 202                    "NO_PAIRWISE " : "",
 203                    sta->rsn_capab & WPA_CAPABILITY_MFPR ? "MFPR " : "",
 204                    sta->rsn_capab & WPA_CAPABILITY_MFPC ? "MFPC " : "",
 205                    sta->rsn_capab & WPA_CAPABILITY_PEERKEY_ENABLED ?
 206                    "PEERKEY " : "");
 207 }