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->wpa_ie && elems->rsn_ie) {
  86                 wpa_printf(MSG_INFO, "Both WPA IE and RSN IE included in "
  87                            "Association Request frame from " MACSTR,
  88                            MAC2STR(sta->addr));
  89         }
  90
  91         if (elems->rsn_ie) {
  92                 wpa_hexdump(MSG_DEBUG, "RSN IE", elems->rsn_ie - 2,
  93                             elems->rsn_ie_len + 2);
  94                 os_memcpy(sta->rsnie, elems->rsn_ie - 2,
  95                           elems->rsn_ie_len + 2);
  96                 if (wpa_parse_wpa_ie_rsn(sta->rsnie, 2 + sta->rsnie[1], &data)
  97                     < 0) {
  98                         wpa_printf(MSG_INFO, "Failed to parse RSN IE from "
  99                                    MACSTR, MAC2STR(sta->addr));
 100                 }
 101         } else if (elems->wpa_ie) {
 102                 wpa_hexdump(MSG_DEBUG, "WPA IE", elems->wpa_ie - 2,
 103                             elems->wpa_ie_len + 2);
 104                 os_memcpy(sta->rsnie, elems->wpa_ie - 2,
 105                           elems->wpa_ie_len + 2);
 106                 if (wpa_parse_wpa_ie_wpa(sta->rsnie, 2 + sta->rsnie[1], &data)
 107                     < 0) {
 108                         wpa_printf(MSG_INFO, "Failed to parse WPA IE from "
 109                                    MACSTR, MAC2STR(sta->addr));
 110                 }
 111         } else {
 112                 sta->rsnie[0] = 0;
 113                 sta->proto = 0;
 114                 sta->pairwise_cipher = 0;
 115                 sta->key_mgmt = 0;
 116                 sta->rsn_capab = 0;
 117                 if (sta->assocreq_capab_info & WLAN_CAPABILITY_PRIVACY)
 118                         sta->pairwise_cipher = WPA_CIPHER_WEP40;
 119                 goto skip_rsn_wpa;
 120         }
 121
 122         sta->proto = data.proto;
 123         sta->pairwise_cipher = data.pairwise_cipher;
 124         sta->key_mgmt = data.key_mgmt;
 125         sta->rsn_capab = data.capabilities;
 126         if (bss->proto && (sta->proto & bss->proto) == 0) {
 127                 wpa_printf(MSG_INFO, "Mismatch in WPA/WPA2 proto: STA "
 128                            MACSTR " 0x%x  BSS " MACSTR " 0x%x",
 129                            MAC2STR(sta->addr), sta->proto,
 130                            MAC2STR(bss->bssid), bss->proto);
 131         }
 132         if (bss->pairwise_cipher &&
 133             (sta->pairwise_cipher & bss->pairwise_cipher) == 0) {
 134                 wpa_printf(MSG_INFO, "Mismatch in pairwise cipher: STA "
 135                            MACSTR " 0x%x  BSS " MACSTR " 0x%x",
 136                            MAC2STR(sta->addr), sta->pairwise_cipher,
 137                            MAC2STR(bss->bssid), bss->pairwise_cipher);
 138         }
 139         if (sta->proto && data.group_cipher != bss->group_cipher) {
 140                 wpa_printf(MSG_INFO, "Mismatch in group cipher: STA "
 141                            MACSTR " 0x%x != BSS " MACSTR " 0x%x",
 142                            MAC2STR(sta->addr), data.group_cipher,
 143                            MAC2STR(bss->bssid), bss->group_cipher);
 144         }
 145         if ((bss->rsn_capab & WPA_CAPABILITY_MFPR) &&
 146             !(sta->rsn_capab & WPA_CAPABILITY_MFPC)) {
 147                 wpa_printf(MSG_INFO, "STA " MACSTR " tries to associate "
 148                            "without MFP to BSS " MACSTR " that advertises "
 149                            "MFPR", MAC2STR(sta->addr), MAC2STR(bss->bssid));
 150         }
 151
 152 skip_rsn_wpa:
 153         wpa_printf(MSG_INFO, "STA " MACSTR
 154                    " proto=%s%s%s"
 155                    "pairwise=%s%s%s%s"
 156                    "key_mgmt=%s%s%s%s%s%s%s%s"
 157                    "rsn_capab=%s%s%s%s%s",
 158                    MAC2STR(sta->addr),
 159                    sta->proto == 0 ? "OPEN " : "",
 160                    sta->proto & WPA_PROTO_WPA ? "WPA " : "",
 161                    sta->proto & WPA_PROTO_RSN ? "WPA2 " : "",
 162                    sta->pairwise_cipher == 0 ? "N/A " : "",
 163                    sta->pairwise_cipher & WPA_CIPHER_NONE ? "NONE " : "",
 164                    sta->pairwise_cipher & WPA_CIPHER_TKIP ? "TKIP " : "",
 165                    sta->pairwise_cipher & WPA_CIPHER_CCMP ? "CCMP " : "",
 166                    sta->key_mgmt == 0 ? "N/A " : "",
 167                    sta->key_mgmt & WPA_KEY_MGMT_IEEE8021X ? "EAP " : "",
 168                    sta->key_mgmt & WPA_KEY_MGMT_PSK ? "PSK " : "",
 169                    sta->key_mgmt & WPA_KEY_MGMT_WPA_NONE ? "WPA-NONE " : "",
 170                    sta->key_mgmt & WPA_KEY_MGMT_FT_IEEE8021X ? "FT-EAP " : "",
 171                    sta->key_mgmt & WPA_KEY_MGMT_FT_PSK ? "FT-PSK " : "",
 172                    sta->key_mgmt & WPA_KEY_MGMT_IEEE8021X_SHA256 ?
 173                    "EAP-SHA256 " : "",
 174                    sta->key_mgmt & WPA_KEY_MGMT_PSK_SHA256 ?
 175                    "PSK-SHA256 " : "",
 176                    sta->rsn_capab & WPA_CAPABILITY_PREAUTH ? "PREAUTH " : "",
 177                    sta->rsn_capab & WPA_CAPABILITY_NO_PAIRWISE ?
 178                    "NO_PAIRWISE " : "",
 179                    sta->rsn_capab & WPA_CAPABILITY_MFPR ? "MFPR " : "",
 180                    sta->rsn_capab & WPA_CAPABILITY_MFPC ? "MFPC " : "",
 181                    sta->rsn_capab & WPA_CAPABILITY_PEERKEY_ENABLED ?
 182                    "PEERKEY " : "");
 183 }