wpa_supplicant/tests/test_wpa.c

   1 /*
   2  * Test program for combined WPA authenticator/supplicant
   3  * Copyright (c) 2006-2007, Jouni Malinen <j@w1.fi>
   4  *
   5  * This program is free software; you can redistribute it and/or modify
   6  * it under the terms of the GNU General Public License version 2 as
   7  * published by the Free Software Foundation.
   8  *
   9  * Alternatively, this software may be distributed under the terms of BSD
  10  * license.
  11  *
  12  * See README and COPYING for more details.
  13  */
  14
  15 #include "includes.h"
  16
  17 #include "common.h"
  18 #include "eloop.h"
  19 #include "common/ieee802_11_defs.h"
  20 #include "../config.h"
  21 #include "rsn_supp/wpa.h"
  22 #include "rsn_supp/wpa_ie.h"
  23 #include "../hostapd/wpa.h"
  24
  25
  26 extern int wpa_debug_level;
  27 extern int wpa_debug_show_keys;
  28
  29
  30 struct wpa {
  31         u8 auth_addr[ETH_ALEN];
  32         u8 supp_addr[ETH_ALEN];
  33         u8 psk[PMK_LEN];
  34
  35         /* from authenticator */
  36         u8 auth_eapol_dst[ETH_ALEN];
  37         u8 *auth_eapol;
  38         size_t auth_eapol_len;
  39
  40         /* from supplicant */
  41         u8 *supp_eapol;
  42         size_t supp_eapol_len;
  43
  44         struct wpa_sm *supp;
  45         struct wpa_authenticator *auth_group;
  46         struct wpa_state_machine *auth;
  47
  48         struct wpa_ssid ssid;
  49         u8 supp_ie[80];
  50         size_t supp_ie_len;
  51 };
  52
  53
  54 static int supp_get_bssid(void *ctx, u8 *bssid)
  55 {
  56         struct wpa *wpa = ctx;
  57         wpa_printf(MSG_DEBUG, "SUPP: %s", __func__);
  58         os_memcpy(bssid, wpa->auth_addr, ETH_ALEN);
  59         return 0;
  60 }
  61
  62
  63 static void supp_set_state(void *ctx, enum wpa_states state)
  64 {
  65         wpa_printf(MSG_DEBUG, "SUPP: %s(state=%d)", __func__, state);
  66 }
  67
  68
  69 static void auth_eapol_rx(void *eloop_data, void *user_ctx)
  70 {
  71         struct wpa *wpa = eloop_data;
  72
  73         wpa_printf(MSG_DEBUG, "AUTH: RX EAPOL frame");
  74         wpa_receive(wpa->auth_group, wpa->auth, wpa->supp_eapol,
  75                     wpa->supp_eapol_len);
  76 }
  77
  78
  79 static int supp_ether_send(void *ctx, const u8 *dest, u16 proto, const u8 *buf,
  80                            size_t len)
  81 {
  82         struct wpa *wpa = ctx;
  83
  84         wpa_printf(MSG_DEBUG, "SUPP: %s(dest=" MACSTR " proto=0x%04x "
  85                    "len=%lu)",
  86                    __func__, MAC2STR(dest), proto, (unsigned long) len);
  87
  88         os_free(wpa->supp_eapol);
  89         wpa->supp_eapol = os_malloc(len);
  90         if (wpa->supp_eapol == NULL)
  91                 return -1;
  92         os_memcpy(wpa->supp_eapol, buf, len);
  93         wpa->supp_eapol_len = len;
  94         eloop_register_timeout(0, 0, auth_eapol_rx, wpa, NULL);
  95
  96         return 0;
  97 }
  98
  99
 100 static u8 * supp_alloc_eapol(void *ctx, u8 type, const void *data,
 101                              u16 data_len, size_t *msg_len, void **data_pos)
 102 {
 103         struct ieee802_1x_hdr *hdr;
 104
 105         wpa_printf(MSG_DEBUG, "SUPP: %s(type=%d data_len=%d)",
 106                    __func__, type, data_len);
 107
 108         *msg_len = sizeof(*hdr) + data_len;
 109         hdr = os_malloc(*msg_len);
 110         if (hdr == NULL)
 111                 return NULL;
 112
 113         hdr->version = 2;
 114         hdr->type = type;
 115         hdr->length = host_to_be16(data_len);
 116
 117         if (data)
 118                 os_memcpy(hdr + 1, data, data_len);
 119         else
 120                 os_memset(hdr + 1, 0, data_len);
 121
 122         if (data_pos)
 123                 *data_pos = hdr + 1;
 124
 125         return (u8 *) hdr;
 126 }
 127
 128
 129 static int supp_get_beacon_ie(void *ctx)
 130 {
 131         struct wpa *wpa = ctx;
 132         const u8 *ie;
 133         size_t ielen;
 134
 135         wpa_printf(MSG_DEBUG, "SUPP: %s", __func__);
 136
 137         ie = wpa_auth_get_wpa_ie(wpa->auth_group, &ielen);
 138         if (ie == NULL || ielen < 1)
 139                 return -1;
 140         if (ie[0] == WLAN_EID_RSN)
 141                 return wpa_sm_set_ap_rsn_ie(wpa->supp, ie, 2 + ie[1]);
 142         return wpa_sm_set_ap_wpa_ie(wpa->supp, ie, 2 + ie[1]);
 143 }
 144
 145
 146 static int supp_set_key(void *ctx, enum wpa_alg alg,
 147                         const u8 *addr, int key_idx, int set_tx,
 148                         const u8 *seq, size_t seq_len,
 149                         const u8 *key, size_t key_len)
 150 {
 151         wpa_printf(MSG_DEBUG, "SUPP: %s(alg=%d addr=" MACSTR " key_idx=%d "
 152                    "set_tx=%d)",
 153                    __func__, alg, MAC2STR(addr), key_idx, set_tx);
 154         wpa_hexdump(MSG_DEBUG, "SUPP: set_key - seq", seq, seq_len);
 155         wpa_hexdump(MSG_DEBUG, "SUPP: set_key - key", key, key_len);
 156         return 0;
 157 }
 158
 159
 160 static int supp_mlme_setprotection(void *ctx, const u8 *addr,
 161                                    int protection_type, int key_type)
 162 {
 163         wpa_printf(MSG_DEBUG, "SUPP: %s(addr=" MACSTR " protection_type=%d "
 164                    "key_type=%d)",
 165                    __func__, MAC2STR(addr), protection_type, key_type);
 166         return 0;
 167 }
 168
 169
 170 static void supp_cancel_auth_timeout(void *ctx)
 171 {
 172         wpa_printf(MSG_DEBUG, "SUPP: %s", __func__);
 173 }
 174
 175
 176 static int supp_init(struct wpa *wpa)
 177 {
 178         struct wpa_sm_ctx *ctx = os_zalloc(sizeof(*ctx));
 179         if (ctx == NULL)
 180                 return -1;
 181
 182         ctx->ctx = wpa;
 183         ctx->msg_ctx = wpa;
 184         ctx->set_state = supp_set_state;
 185         ctx->get_bssid = supp_get_bssid;
 186         ctx->ether_send = supp_ether_send;
 187         ctx->get_beacon_ie = supp_get_beacon_ie;
 188         ctx->alloc_eapol = supp_alloc_eapol;
 189         ctx->set_key = supp_set_key;
 190         ctx->mlme_setprotection = supp_mlme_setprotection;
 191         ctx->cancel_auth_timeout = supp_cancel_auth_timeout;
 192         wpa->supp = wpa_sm_init(ctx);
 193         if (wpa->supp == NULL) {
 194                 wpa_printf(MSG_DEBUG, "SUPP: wpa_sm_init() failed");
 195                 return -1;
 196         }
 197
 198         wpa_sm_set_own_addr(wpa->supp, wpa->supp_addr);
 199         wpa_sm_set_param(wpa->supp, WPA_PARAM_RSN_ENABLED, 1);
 200         wpa_sm_set_param(wpa->supp, WPA_PARAM_PROTO, WPA_PROTO_RSN);
 201         wpa_sm_set_param(wpa->supp, WPA_PARAM_PAIRWISE, WPA_CIPHER_CCMP);
 202         wpa_sm_set_param(wpa->supp, WPA_PARAM_GROUP, WPA_CIPHER_CCMP);
 203         wpa_sm_set_param(wpa->supp, WPA_PARAM_KEY_MGMT, WPA_KEY_MGMT_PSK);
 204         wpa_sm_set_pmk(wpa->supp, wpa->psk, PMK_LEN);
 205
 206         wpa->supp_ie_len = sizeof(wpa->supp_ie);
 207         if (wpa_sm_set_assoc_wpa_ie_default(wpa->supp, wpa->supp_ie,
 208                                             &wpa->supp_ie_len) < 0) {
 209                 wpa_printf(MSG_DEBUG, "SUPP: wpa_sm_set_assoc_wpa_ie_default()"
 210                            " failed");
 211                 return -1;
 212         }
 213
 214         wpa_sm_notify_assoc(wpa->supp, wpa->auth_addr);
 215
 216         return 0;
 217 }
 218
 219
 220 static void auth_logger(void *ctx, const u8 *addr, logger_level level,
 221                         const char *txt)
 222 {
 223         if (addr)
 224                 wpa_printf(MSG_DEBUG, "AUTH: " MACSTR " - %s",
 225                            MAC2STR(addr), txt);
 226         else
 227                 wpa_printf(MSG_DEBUG, "AUTH: %s", txt);
 228 }
 229
 230
 231 static void supp_eapol_rx(void *eloop_data, void *user_ctx)
 232 {
 233         struct wpa *wpa = eloop_data;
 234
 235         wpa_printf(MSG_DEBUG, "SUPP: RX EAPOL frame");
 236         wpa_sm_rx_eapol(wpa->supp, wpa->auth_addr, wpa->auth_eapol,
 237                         wpa->auth_eapol_len);
 238 }
 239
 240
 241 static int auth_send_eapol(void *ctx, const u8 *addr, const u8 *data,
 242                            size_t data_len, int encrypt)
 243 {
 244         struct wpa *wpa = ctx;
 245
 246         wpa_printf(MSG_DEBUG, "AUTH: %s(addr=" MACSTR " data_len=%lu "
 247                    "encrypt=%d)",
 248                    __func__, MAC2STR(addr), (unsigned long) data_len, encrypt);
 249
 250         os_free(wpa->auth_eapol);
 251         wpa->auth_eapol = os_malloc(data_len);
 252         if (wpa->auth_eapol == NULL)
 253                 return -1;
 254         os_memcpy(wpa->auth_eapol_dst, addr, ETH_ALEN);
 255         os_memcpy(wpa->auth_eapol, data, data_len);
 256         wpa->auth_eapol_len = data_len;
 257         eloop_register_timeout(0, 0, supp_eapol_rx, wpa, NULL);
 258
 259         return 0;
 260 }
 261
 262
 263 static const u8 * auth_get_psk(void *ctx, const u8 *addr, const u8 *prev_psk)
 264 {
 265         struct wpa *wpa = ctx;
 266         wpa_printf(MSG_DEBUG, "AUTH: %s (addr=" MACSTR " prev_psk=%p)",
 267                    __func__, MAC2STR(addr), prev_psk);
 268         if (prev_psk)
 269                 return NULL;
 270         return wpa->psk;
 271 }
 272
 273
 274 static int auth_init_group(struct wpa *wpa)
 275 {
 276         struct wpa_auth_config conf;
 277         struct wpa_auth_callbacks cb;
 278
 279         wpa_printf(MSG_DEBUG, "AUTH: Initializing group state machine");
 280
 281         os_memset(&conf, 0, sizeof(conf));
 282         conf.wpa = 2;
 283         conf.wpa_key_mgmt = WPA_KEY_MGMT_PSK;
 284         conf.wpa_pairwise = WPA_CIPHER_CCMP;
 285         conf.rsn_pairwise = WPA_CIPHER_CCMP;
 286         conf.wpa_group = WPA_CIPHER_CCMP;
 287         conf.eapol_version = 2;
 288
 289         os_memset(&cb, 0, sizeof(cb));
 290         cb.ctx = wpa;
 291         cb.logger = auth_logger;
 292         cb.send_eapol = auth_send_eapol;
 293         cb.get_psk = auth_get_psk;
 294
 295         wpa->auth_group = wpa_init(wpa->auth_addr, &conf, &cb);
 296         if (wpa->auth_group == NULL) {
 297                 wpa_printf(MSG_DEBUG, "AUTH: wpa_init() failed");
 298                 return -1;
 299         }
 300
 301         return 0;
 302 }
 303
 304
 305 static int auth_init(struct wpa *wpa)
 306 {
 307         wpa->auth = wpa_auth_sta_init(wpa->auth_group, wpa->supp_addr);
 308         if (wpa->auth == NULL) {
 309                 wpa_printf(MSG_DEBUG, "AUTH: wpa_auth_sta_init() failed");
 310                 return -1;
 311         }
 312
 313         if (wpa_validate_wpa_ie(wpa->auth_group, wpa->auth, wpa->supp_ie,
 314                                 wpa->supp_ie_len, NULL, 0) != WPA_IE_OK) {
 315                 wpa_printf(MSG_DEBUG, "AUTH: wpa_validate_wpa_ie() failed");
 316                 return -1;
 317         }
 318
 319         wpa_auth_sm_event(wpa->auth, WPA_ASSOC);
 320
 321         wpa_auth_sta_associated(wpa->auth_group, wpa->auth);
 322
 323         return 0;
 324 }
 325
 326
 327 static void deinit(struct wpa *wpa)
 328 {
 329         wpa_auth_sta_deinit(wpa->auth);
 330         wpa_sm_deinit(wpa->supp);
 331         wpa_deinit(wpa->auth_group);
 332         os_free(wpa->auth_eapol);
 333         wpa->auth_eapol = NULL;
 334         os_free(wpa->supp_eapol);
 335         wpa->supp_eapol = NULL;
 336 }
 337
 338
 339 int main(int argc, char *argv[])
 340 {
 341         struct wpa wpa;
 342
 343         if (os_program_init())
 344                 return -1;
 345
 346         os_memset(&wpa, 0, sizeof(wpa));
 347         os_memset(wpa.auth_addr, 0x12, ETH_ALEN);
 348         os_memset(wpa.supp_addr, 0x32, ETH_ALEN);
 349         os_memset(wpa.psk, 0x44, PMK_LEN);
 350
 351         wpa_debug_level = 0;
 352         wpa_debug_show_keys = 1;
 353
 354         if (eloop_init()) {
 355                 wpa_printf(MSG_ERROR, "Failed to initialize event loop");
 356                 return -1;
 357         }
 358
 359         if (auth_init_group(&wpa) < 0)
 360                 return -1;
 361
 362         if (supp_init(&wpa) < 0)
 363                 return -1;
 364
 365         if (auth_init(&wpa) < 0)
 366                 return -1;
 367
 368         wpa_printf(MSG_DEBUG, "Starting eloop");
 369         eloop_run();
 370         wpa_printf(MSG_DEBUG, "eloop done");
 371
 372         deinit(&wpa);
 373
 374         eloop_destroy();
 375
 376         os_program_deinit();
 377
 378         return 0;
 379 }