wpa_supplicant/eapol_test.c

   1 /*
   2  * WPA Supplicant - test code
   3  * Copyright (c) 2003-2007, 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  * IEEE 802.1X Supplicant test code (to be used in place of wpa_supplicant.c.
  15  * Not used in production version.
  16  */
  17
  18 #include "includes.h"
  19 #include <assert.h>
  20
  21 #include "common.h"
  22 #include "config.h"
  23 #include "eapol_supp/eapol_supp_sm.h"
  24 #include "eap_peer/eap.h"
  25 #include "eloop.h"
  26 #include "wpa.h"
  27 #include "eap_peer/eap_i.h"
  28 #include "wpa_supplicant_i.h"
  29 #include "radius/radius.h"
  30 #include "radius/radius_client.h"
  31 #include "ctrl_iface.h"
  32 #include "pcsc_funcs.h"
  33
  34
  35 extern int wpa_debug_level;
  36 extern int wpa_debug_show_keys;
  37
  38 struct wpa_driver_ops *wpa_supplicant_drivers[] = { NULL };
  39
  40
  41 struct extra_radius_attr {
  42         u8 type;
  43         char syntax;
  44         char *data;
  45         struct extra_radius_attr *next;
  46 };
  47
  48 struct eapol_test_data {
  49         struct wpa_supplicant *wpa_s;
  50
  51         int eapol_test_num_reauths;
  52         int no_mppe_keys;
  53         int num_mppe_ok, num_mppe_mismatch;
  54
  55         u8 radius_identifier;
  56         struct radius_msg *last_recv_radius;
  57         struct in_addr own_ip_addr;
  58         struct radius_client_data *radius;
  59         struct hostapd_radius_servers *radius_conf;
  60
  61         u8 *last_eap_radius; /* last received EAP Response from Authentication
  62                               * Server */
  63         size_t last_eap_radius_len;
  64
  65         u8 authenticator_pmk[PMK_LEN];
  66         size_t authenticator_pmk_len;
  67         int radius_access_accept_received;
  68         int radius_access_reject_received;
  69         int auth_timed_out;
  70
  71         u8 *eap_identity;
  72         size_t eap_identity_len;
  73
  74         char *connect_info;
  75         u8 own_addr[ETH_ALEN];
  76         struct extra_radius_attr *extra_attrs;
  77 };
  78
  79 static struct eapol_test_data eapol_test;
  80
  81
  82 static void send_eap_request_identity(void *eloop_ctx, void *timeout_ctx);
  83
  84
  85 static void hostapd_logger_cb(void *ctx, const u8 *addr, unsigned int module,
  86                               int level, const char *txt, size_t len)
  87 {
  88         if (addr)
  89                 wpa_printf(MSG_DEBUG, "STA " MACSTR ": %s\n",
  90                            MAC2STR(addr), txt);
  91         else
  92                 wpa_printf(MSG_DEBUG, "%s", txt);
  93 }
  94
  95
  96 static int add_extra_attr(struct radius_msg *msg,
  97                           struct extra_radius_attr *attr)
  98 {
  99         size_t len;
 100         char *pos;
 101         u32 val;
 102         char buf[128];
 103
 104         switch (attr->syntax) {
 105         case 's':
 106                 os_snprintf(buf, sizeof(buf), "%s", attr->data);
 107                 len = os_strlen(buf);
 108                 break;
 109         case 'n':
 110                 buf[0] = '\0';
 111                 len = 1;
 112                 break;
 113         case 'x':
 114                 pos = attr->data;
 115                 if (pos[0] == '0' && pos[1] == 'x')
 116                         pos += 2;
 117                 len = os_strlen(pos);
 118                 if ((len & 1) || (len / 2) > sizeof(buf)) {
 119                         printf("Invalid extra attribute hexstring\n");
 120                         return -1;
 121                 }
 122                 len /= 2;
 123                 if (hexstr2bin(pos, (u8 *) buf, len) < 0) {
 124                         printf("Invalid extra attribute hexstring\n");
 125                         return -1;
 126                 }
 127                 break;
 128         case 'd':
 129                 val = htonl(atoi(attr->data));
 130                 os_memcpy(buf, &val, 4);
 131                 len = 4;
 132                 break;
 133         default:
 134                 printf("Incorrect extra attribute syntax specification\n");
 135                 return -1;
 136         }
 137
 138         if (!radius_msg_add_attr(msg, attr->type, (u8 *) buf, len)) {
 139                 printf("Could not add attribute %d\n", attr->type);
 140                 return -1;
 141         }
 142
 143         return 0;
 144 }
 145
 146
 147 static int add_extra_attrs(struct radius_msg *msg,
 148                            struct extra_radius_attr *attrs)
 149 {
 150         struct extra_radius_attr *p;
 151         for (p = attrs; p; p = p->next) {
 152                 if (add_extra_attr(msg, p) < 0)
 153                         return -1;
 154         }
 155         return 0;
 156 }
 157
 158
 159 static void ieee802_1x_encapsulate_radius(struct eapol_test_data *e,
 160                                           const u8 *eap, size_t len)
 161 {
 162         struct radius_msg *msg;
 163         char buf[128];
 164         const struct eap_hdr *hdr;
 165         const u8 *pos;
 166
 167         wpa_printf(MSG_DEBUG, "Encapsulating EAP message into a RADIUS "
 168                    "packet");
 169
 170         e->radius_identifier = radius_client_get_id(e->radius);
 171         msg = radius_msg_new(RADIUS_CODE_ACCESS_REQUEST,
 172                              e->radius_identifier);
 173         if (msg == NULL) {
 174                 printf("Could not create net RADIUS packet\n");
 175                 return;
 176         }
 177
 178         radius_msg_make_authenticator(msg, (u8 *) e, sizeof(*e));
 179
 180         hdr = (const struct eap_hdr *) eap;
 181         pos = (const u8 *) (hdr + 1);
 182         if (len > sizeof(*hdr) && hdr->code == EAP_CODE_RESPONSE &&
 183             pos[0] == EAP_TYPE_IDENTITY) {
 184                 pos++;
 185                 os_free(e->eap_identity);
 186                 e->eap_identity_len = len - sizeof(*hdr) - 1;
 187                 e->eap_identity = os_malloc(e->eap_identity_len);
 188                 if (e->eap_identity) {
 189                         os_memcpy(e->eap_identity, pos, e->eap_identity_len);
 190                         wpa_hexdump(MSG_DEBUG, "Learned identity from "
 191                                     "EAP-Response-Identity",
 192                                     e->eap_identity, e->eap_identity_len);
 193                 }
 194         }
 195
 196         if (e->eap_identity &&
 197             !radius_msg_add_attr(msg, RADIUS_ATTR_USER_NAME,
 198                                  e->eap_identity, e->eap_identity_len)) {
 199                 printf("Could not add User-Name\n");
 200                 goto fail;
 201         }
 202
 203         if (!radius_msg_add_attr(msg, RADIUS_ATTR_NAS_IP_ADDRESS,
 204                                  (u8 *) &e->own_ip_addr, 4)) {
 205                 printf("Could not add NAS-IP-Address\n");
 206                 goto fail;
 207         }
 208
 209         os_snprintf(buf, sizeof(buf), RADIUS_802_1X_ADDR_FORMAT,
 210                     MAC2STR(e->wpa_s->own_addr));
 211         if (!radius_msg_add_attr(msg, RADIUS_ATTR_CALLING_STATION_ID,
 212                                  (u8 *) buf, os_strlen(buf))) {
 213                 printf("Could not add Calling-Station-Id\n");
 214                 goto fail;
 215         }
 216
 217         /* TODO: should probably check MTU from driver config; 2304 is max for
 218          * IEEE 802.11, but use 1400 to avoid problems with too large packets
 219          */
 220         if (!radius_msg_add_attr_int32(msg, RADIUS_ATTR_FRAMED_MTU, 1400)) {
 221                 printf("Could not add Framed-MTU\n");
 222                 goto fail;
 223         }
 224
 225         if (!radius_msg_add_attr_int32(msg, RADIUS_ATTR_NAS_PORT_TYPE,
 226                                        RADIUS_NAS_PORT_TYPE_IEEE_802_11)) {
 227                 printf("Could not add NAS-Port-Type\n");
 228                 goto fail;
 229         }
 230
 231         os_snprintf(buf, sizeof(buf), "%s", e->connect_info);
 232         if (!radius_msg_add_attr(msg, RADIUS_ATTR_CONNECT_INFO,
 233                                  (u8 *) buf, os_strlen(buf))) {
 234                 printf("Could not add Connect-Info\n");
 235                 goto fail;
 236         }
 237
 238         if (add_extra_attrs(msg, e->extra_attrs) < 0)
 239                 goto fail;
 240
 241         if (eap && !radius_msg_add_eap(msg, eap, len)) {
 242                 printf("Could not add EAP-Message\n");
 243                 goto fail;
 244         }
 245
 246         /* State attribute must be copied if and only if this packet is
 247          * Access-Request reply to the previous Access-Challenge */
 248         if (e->last_recv_radius && e->last_recv_radius->hdr->code ==
 249             RADIUS_CODE_ACCESS_CHALLENGE) {
 250                 int res = radius_msg_copy_attr(msg, e->last_recv_radius,
 251                                                RADIUS_ATTR_STATE);
 252                 if (res < 0) {
 253                         printf("Could not copy State attribute from previous "
 254                                "Access-Challenge\n");
 255                         goto fail;
 256                 }
 257                 if (res > 0) {
 258                         wpa_printf(MSG_DEBUG, "  Copied RADIUS State "
 259                                    "Attribute");
 260                 }
 261         }
 262
 263         radius_client_send(e->radius, msg, RADIUS_AUTH, e->wpa_s->own_addr);
 264         return;
 265
 266  fail:
 267         radius_msg_free(msg);
 268         os_free(msg);
 269 }
 270
 271
 272 static int eapol_test_eapol_send(void *ctx, int type, const u8 *buf,
 273                                  size_t len)
 274 {
 275         /* struct wpa_supplicant *wpa_s = ctx; */
 276         printf("WPA: eapol_test_eapol_send(type=%d len=%lu)\n",
 277                type, (unsigned long) len);
 278         if (type == IEEE802_1X_TYPE_EAP_PACKET) {
 279                 wpa_hexdump(MSG_DEBUG, "TX EAP -> RADIUS", buf, len);
 280                 ieee802_1x_encapsulate_radius(&eapol_test, buf, len);
 281         }
 282         return 0;
 283 }
 284
 285
 286 static void eapol_test_set_config_blob(void *ctx,
 287                                        struct wpa_config_blob *blob)
 288 {
 289         struct wpa_supplicant *wpa_s = ctx;
 290         wpa_config_set_blob(wpa_s->conf, blob);
 291 }
 292
 293
 294 static const struct wpa_config_blob *
 295 eapol_test_get_config_blob(void *ctx, const char *name)
 296 {
 297         struct wpa_supplicant *wpa_s = ctx;
 298         return wpa_config_get_blob(wpa_s->conf, name);
 299 }
 300
 301
 302 static void eapol_test_eapol_done_cb(void *ctx)
 303 {
 304         printf("WPA: EAPOL processing complete\n");
 305 }
 306
 307
 308 static void eapol_sm_reauth(void *eloop_ctx, void *timeout_ctx)
 309 {
 310         struct eapol_test_data *e = eloop_ctx;
 311         printf("\n\n\n\n\neapol_test: Triggering EAP reauthentication\n\n");
 312         e->radius_access_accept_received = 0;
 313         send_eap_request_identity(e->wpa_s, NULL);
 314 }
 315
 316
 317 static int eapol_test_compare_pmk(struct eapol_test_data *e)
 318 {
 319         u8 pmk[PMK_LEN];
 320         int ret = 1;
 321
 322         if (eapol_sm_get_key(e->wpa_s->eapol, pmk, PMK_LEN) == 0) {
 323                 wpa_hexdump(MSG_DEBUG, "PMK from EAPOL", pmk, PMK_LEN);
 324                 if (os_memcmp(pmk, e->authenticator_pmk, PMK_LEN) != 0) {
 325                         printf("WARNING: PMK mismatch\n");
 326                         wpa_hexdump(MSG_DEBUG, "PMK from AS",
 327                                     e->authenticator_pmk, PMK_LEN);
 328                 } else if (e->radius_access_accept_received)
 329                         ret = 0;
 330         } else if (e->authenticator_pmk_len == 16 &&
 331                    eapol_sm_get_key(e->wpa_s->eapol, pmk, 16) == 0) {
 332                 wpa_hexdump(MSG_DEBUG, "LEAP PMK from EAPOL", pmk, 16);
 333                 if (os_memcmp(pmk, e->authenticator_pmk, 16) != 0) {
 334                         printf("WARNING: PMK mismatch\n");
 335                         wpa_hexdump(MSG_DEBUG, "PMK from AS",
 336                                     e->authenticator_pmk, 16);
 337                 } else if (e->radius_access_accept_received)
 338                         ret = 0;
 339         } else if (e->radius_access_accept_received && e->no_mppe_keys) {
 340                 /* No keying material expected */
 341                 ret = 0;
 342         }
 343
 344         if (ret && !e->no_mppe_keys)
 345                 e->num_mppe_mismatch++;
 346         else if (!e->no_mppe_keys)
 347                 e->num_mppe_ok++;
 348
 349         return ret;
 350 }
 351
 352
 353 static void eapol_sm_cb(struct eapol_sm *eapol, int success, void *ctx)
 354 {
 355         struct eapol_test_data *e = ctx;
 356         printf("eapol_sm_cb: success=%d\n", success);
 357         e->eapol_test_num_reauths--;
 358         if (e->eapol_test_num_reauths < 0)
 359                 eloop_terminate();
 360         else {
 361                 eapol_test_compare_pmk(e);
 362                 eloop_register_timeout(0, 100000, eapol_sm_reauth, e, NULL);
 363         }
 364 }
 365
 366
 367 static int test_eapol(struct eapol_test_data *e, struct wpa_supplicant *wpa_s,
 368                       struct wpa_ssid *ssid)
 369 {
 370         struct eapol_config eapol_conf;
 371         struct eapol_ctx *ctx;
 372
 373         ctx = os_zalloc(sizeof(*ctx));
 374         if (ctx == NULL) {
 375                 printf("Failed to allocate EAPOL context.\n");
 376                 return -1;
 377         }
 378         ctx->ctx = wpa_s;
 379         ctx->msg_ctx = wpa_s;
 380         ctx->scard_ctx = wpa_s->scard;
 381         ctx->cb = eapol_sm_cb;
 382         ctx->cb_ctx = e;
 383         ctx->eapol_send_ctx = wpa_s;
 384         ctx->preauth = 0;
 385         ctx->eapol_done_cb = eapol_test_eapol_done_cb;
 386         ctx->eapol_send = eapol_test_eapol_send;
 387         ctx->set_config_blob = eapol_test_set_config_blob;
 388         ctx->get_config_blob = eapol_test_get_config_blob;
 389 #ifdef EAP_TLS_OPENSSL
 390         ctx->opensc_engine_path = wpa_s->conf->opensc_engine_path;
 391         ctx->pkcs11_engine_path = wpa_s->conf->pkcs11_engine_path;
 392         ctx->pkcs11_module_path = wpa_s->conf->pkcs11_module_path;
 393 #endif /* EAP_TLS_OPENSSL */
 394
 395         wpa_s->eapol = eapol_sm_init(ctx);
 396         if (wpa_s->eapol == NULL) {
 397                 os_free(ctx);
 398                 printf("Failed to initialize EAPOL state machines.\n");
 399                 return -1;
 400         }
 401
 402         wpa_s->current_ssid = ssid;
 403         os_memset(&eapol_conf, 0, sizeof(eapol_conf));
 404         eapol_conf.accept_802_1x_keys = 1;
 405         eapol_conf.required_keys = 0;
 406         eapol_conf.fast_reauth = wpa_s->conf->fast_reauth;
 407         eapol_conf.workaround = ssid->eap_workaround;
 408         eapol_sm_notify_config(wpa_s->eapol, &ssid->eap, &eapol_conf);
 409         eapol_sm_register_scard_ctx(wpa_s->eapol, wpa_s->scard);
 410
 411
 412         eapol_sm_notify_portValid(wpa_s->eapol, FALSE);
 413         /* 802.1X::portControl = Auto */
 414         eapol_sm_notify_portEnabled(wpa_s->eapol, TRUE);
 415
 416         return 0;
 417 }
 418
 419
 420 static void test_eapol_clean(struct eapol_test_data *e,
 421                              struct wpa_supplicant *wpa_s)
 422 {
 423         struct extra_radius_attr *p, *prev;
 424
 425         radius_client_deinit(e->radius);
 426         os_free(e->last_eap_radius);
 427         if (e->last_recv_radius) {
 428                 radius_msg_free(e->last_recv_radius);
 429                 os_free(e->last_recv_radius);
 430         }
 431         os_free(e->eap_identity);
 432         e->eap_identity = NULL;
 433         eapol_sm_deinit(wpa_s->eapol);
 434         wpa_s->eapol = NULL;
 435         if (e->radius_conf && e->radius_conf->auth_server) {
 436                 os_free(e->radius_conf->auth_server->shared_secret);
 437                 os_free(e->radius_conf->auth_server);
 438         }
 439         os_free(e->radius_conf);
 440         e->radius_conf = NULL;
 441         scard_deinit(wpa_s->scard);
 442         if (wpa_s->ctrl_iface) {
 443                 wpa_supplicant_ctrl_iface_deinit(wpa_s->ctrl_iface);
 444                 wpa_s->ctrl_iface = NULL;
 445         }
 446         wpa_config_free(wpa_s->conf);
 447
 448         p = e->extra_attrs;
 449         while (p) {
 450                 prev = p;
 451                 p = p->next;
 452                 os_free(prev);
 453         }
 454 }
 455
 456
 457 static void send_eap_request_identity(void *eloop_ctx, void *timeout_ctx)
 458 {
 459         struct wpa_supplicant *wpa_s = eloop_ctx;
 460         u8 buf[100], *pos;
 461         struct ieee802_1x_hdr *hdr;
 462         struct eap_hdr *eap;
 463
 464         hdr = (struct ieee802_1x_hdr *) buf;
 465         hdr->version = EAPOL_VERSION;
 466         hdr->type = IEEE802_1X_TYPE_EAP_PACKET;
 467         hdr->length = htons(5);
 468
 469         eap = (struct eap_hdr *) (hdr + 1);
 470         eap->code = EAP_CODE_REQUEST;
 471         eap->identifier = 0;
 472         eap->length = htons(5);
 473         pos = (u8 *) (eap + 1);
 474         *pos = EAP_TYPE_IDENTITY;
 475
 476         printf("Sending fake EAP-Request-Identity\n");
 477         eapol_sm_rx_eapol(wpa_s->eapol, wpa_s->bssid, buf,
 478                           sizeof(*hdr) + 5);
 479 }
 480
 481
 482 static void eapol_test_timeout(void *eloop_ctx, void *timeout_ctx)
 483 {
 484         struct eapol_test_data *e = eloop_ctx;
 485         printf("EAPOL test timed out\n");
 486         e->auth_timed_out = 1;
 487         eloop_terminate();
 488 }
 489
 490
 491 static char *eap_type_text(u8 type)
 492 {
 493         switch (type) {
 494         case EAP_TYPE_IDENTITY: return "Identity";
 495         case EAP_TYPE_NOTIFICATION: return "Notification";
 496         case EAP_TYPE_NAK: return "Nak";
 497         case EAP_TYPE_TLS: return "TLS";
 498         case EAP_TYPE_TTLS: return "TTLS";
 499         case EAP_TYPE_PEAP: return "PEAP";
 500         case EAP_TYPE_SIM: return "SIM";
 501         case EAP_TYPE_GTC: return "GTC";
 502         case EAP_TYPE_MD5: return "MD5";
 503         case EAP_TYPE_OTP: return "OTP";
 504         case EAP_TYPE_FAST: return "FAST";
 505         case EAP_TYPE_SAKE: return "SAKE";
 506         case EAP_TYPE_PSK: return "PSK";
 507         default: return "Unknown";
 508         }
 509 }
 510
 511
 512 static void ieee802_1x_decapsulate_radius(struct eapol_test_data *e)
 513 {
 514         u8 *eap;
 515         size_t len;
 516         struct eap_hdr *hdr;
 517         int eap_type = -1;
 518         char buf[64];
 519         struct radius_msg *msg;
 520
 521         if (e->last_recv_radius == NULL)
 522                 return;
 523
 524         msg = e->last_recv_radius;
 525
 526         eap = radius_msg_get_eap(msg, &len);
 527         if (eap == NULL) {
 528                 /* draft-aboba-radius-rfc2869bis-20.txt, Chap. 2.6.3:
 529                  * RADIUS server SHOULD NOT send Access-Reject/no EAP-Message
 530                  * attribute */
 531                 wpa_printf(MSG_DEBUG, "could not extract "
 532                                "EAP-Message from RADIUS message");
 533                 os_free(e->last_eap_radius);
 534                 e->last_eap_radius = NULL;
 535                 e->last_eap_radius_len = 0;
 536                 return;
 537         }
 538
 539         if (len < sizeof(*hdr)) {
 540                 wpa_printf(MSG_DEBUG, "too short EAP packet "
 541                                "received from authentication server");
 542                 os_free(eap);
 543                 return;
 544         }
 545
 546         if (len > sizeof(*hdr))
 547                 eap_type = eap[sizeof(*hdr)];
 548
 549         hdr = (struct eap_hdr *) eap;
 550         switch (hdr->code) {
 551         case EAP_CODE_REQUEST:
 552                 os_snprintf(buf, sizeof(buf), "EAP-Request-%s (%d)",
 553                             eap_type >= 0 ? eap_type_text(eap_type) : "??",
 554                             eap_type);
 555                 break;
 556         case EAP_CODE_RESPONSE:
 557                 os_snprintf(buf, sizeof(buf), "EAP Response-%s (%d)",
 558                             eap_type >= 0 ? eap_type_text(eap_type) : "??",
 559                             eap_type);
 560                 break;
 561         case EAP_CODE_SUCCESS:
 562                 os_strlcpy(buf, "EAP Success", sizeof(buf));
 563                 /* LEAP uses EAP Success within an authentication, so must not
 564                  * stop here with eloop_terminate(); */
 565                 break;
 566         case EAP_CODE_FAILURE:
 567                 os_strlcpy(buf, "EAP Failure", sizeof(buf));
 568                 eloop_terminate();
 569                 break;
 570         default:
 571                 os_strlcpy(buf, "unknown EAP code", sizeof(buf));
 572                 wpa_hexdump(MSG_DEBUG, "Decapsulated EAP packet", eap, len);
 573                 break;
 574         }
 575         wpa_printf(MSG_DEBUG, "decapsulated EAP packet (code=%d "
 576                        "id=%d len=%d) from RADIUS server: %s",
 577                       hdr->code, hdr->identifier, ntohs(hdr->length), buf);
 578
 579         /* sta->eapol_sm->be_auth.idFromServer = hdr->identifier; */
 580
 581         os_free(e->last_eap_radius);
 582         e->last_eap_radius = eap;
 583         e->last_eap_radius_len = len;
 584
 585         {
 586                 struct ieee802_1x_hdr *dot1x;
 587                 dot1x = os_malloc(sizeof(*dot1x) + len);
 588                 assert(dot1x != NULL);
 589                 dot1x->version = EAPOL_VERSION;
 590                 dot1x->type = IEEE802_1X_TYPE_EAP_PACKET;
 591                 dot1x->length = htons(len);
 592                 os_memcpy((u8 *) (dot1x + 1), eap, len);
 593                 eapol_sm_rx_eapol(e->wpa_s->eapol, e->wpa_s->bssid,
 594                                   (u8 *) dot1x, sizeof(*dot1x) + len);
 595                 os_free(dot1x);
 596         }
 597 }
 598
 599
 600 static void ieee802_1x_get_keys(struct eapol_test_data *e,
 601                                 struct radius_msg *msg, struct radius_msg *req,
 602                                 u8 *shared_secret, size_t shared_secret_len)
 603 {
 604         struct radius_ms_mppe_keys *keys;
 605
 606         keys = radius_msg_get_ms_keys(msg, req, shared_secret,
 607                                       shared_secret_len);
 608         if (keys && keys->send == NULL && keys->recv == NULL) {
 609                 os_free(keys);
 610                 keys = radius_msg_get_cisco_keys(msg, req, shared_secret,
 611                                                  shared_secret_len);
 612         }
 613
 614         if (keys) {
 615                 if (keys->send) {
 616                         wpa_hexdump(MSG_DEBUG, "MS-MPPE-Send-Key (sign)",
 617                                     keys->send, keys->send_len);
 618                 }
 619                 if (keys->recv) {
 620                         wpa_hexdump(MSG_DEBUG, "MS-MPPE-Recv-Key (crypt)",
 621                                     keys->recv, keys->recv_len);
 622                         e->authenticator_pmk_len =
 623                                 keys->recv_len > PMK_LEN ? PMK_LEN :
 624                                 keys->recv_len;
 625                         os_memcpy(e->authenticator_pmk, keys->recv,
 626                                   e->authenticator_pmk_len);
 627                         if (e->authenticator_pmk_len == 16 && keys->send &&
 628                             keys->send_len == 16) {
 629                                 /* MS-CHAP-v2 derives 16 octet keys */
 630                                 wpa_printf(MSG_DEBUG, "Use MS-MPPE-Send-Key "
 631                                            "to extend PMK to 32 octets");
 632                                 os_memcpy(e->authenticator_pmk +
 633                                           e->authenticator_pmk_len,
 634                                           keys->send, keys->send_len);
 635                                 e->authenticator_pmk_len += keys->send_len;
 636                         }
 637                 }
 638
 639                 os_free(keys->send);
 640                 os_free(keys->recv);
 641                 os_free(keys);
 642         }
 643 }
 644
 645
 646 /* Process the RADIUS frames from Authentication Server */
 647 static RadiusRxResult
 648 ieee802_1x_receive_auth(struct radius_msg *msg, struct radius_msg *req,
 649                         u8 *shared_secret, size_t shared_secret_len,
 650                         void *data)
 651 {
 652         struct eapol_test_data *e = data;
 653
 654         /* RFC 2869, Ch. 5.13: valid Message-Authenticator attribute MUST be
 655          * present when packet contains an EAP-Message attribute */
 656         if (msg->hdr->code == RADIUS_CODE_ACCESS_REJECT &&
 657             radius_msg_get_attr(msg, RADIUS_ATTR_MESSAGE_AUTHENTICATOR, NULL,
 658                                 0) < 0 &&
 659             radius_msg_get_attr(msg, RADIUS_ATTR_EAP_MESSAGE, NULL, 0) < 0) {
 660                 wpa_printf(MSG_DEBUG, "Allowing RADIUS "
 661                               "Access-Reject without Message-Authenticator "
 662                               "since it does not include EAP-Message\n");
 663         } else if (radius_msg_verify(msg, shared_secret, shared_secret_len,
 664                                      req, 1)) {
 665                 printf("Incoming RADIUS packet did not have correct "
 666                        "Message-Authenticator - dropped\n");
 667                 return RADIUS_RX_UNKNOWN;
 668         }
 669
 670         if (msg->hdr->code != RADIUS_CODE_ACCESS_ACCEPT &&
 671             msg->hdr->code != RADIUS_CODE_ACCESS_REJECT &&
 672             msg->hdr->code != RADIUS_CODE_ACCESS_CHALLENGE) {
 673                 printf("Unknown RADIUS message code\n");
 674                 return RADIUS_RX_UNKNOWN;
 675         }
 676
 677         e->radius_identifier = -1;
 678         wpa_printf(MSG_DEBUG, "RADIUS packet matching with station");
 679
 680         if (e->last_recv_radius) {
 681                 radius_msg_free(e->last_recv_radius);
 682                 os_free(e->last_recv_radius);
 683         }
 684
 685         e->last_recv_radius = msg;
 686
 687         switch (msg->hdr->code) {
 688         case RADIUS_CODE_ACCESS_ACCEPT:
 689                 e->radius_access_accept_received = 1;
 690                 ieee802_1x_get_keys(e, msg, req, shared_secret,
 691                                     shared_secret_len);
 692                 break;
 693         case RADIUS_CODE_ACCESS_REJECT:
 694                 e->radius_access_reject_received = 1;
 695                 break;
 696         }
 697
 698         ieee802_1x_decapsulate_radius(e);
 699
 700         if ((msg->hdr->code == RADIUS_CODE_ACCESS_ACCEPT &&
 701              e->eapol_test_num_reauths < 0) ||
 702             msg->hdr->code == RADIUS_CODE_ACCESS_REJECT) {
 703                 eloop_terminate();
 704         }
 705
 706         return RADIUS_RX_QUEUED;
 707 }
 708
 709
 710 static void wpa_init_conf(struct eapol_test_data *e,
 711                           struct wpa_supplicant *wpa_s, const char *authsrv,
 712                           int port, const char *secret,
 713                           const char *cli_addr)
 714 {
 715         struct hostapd_radius_server *as;
 716         int res;
 717
 718         wpa_s->bssid[5] = 1;
 719         os_memcpy(wpa_s->own_addr, e->own_addr, ETH_ALEN);
 720         e->own_ip_addr.s_addr = htonl((127 << 24) | 1);
 721         os_strlcpy(wpa_s->ifname, "test", sizeof(wpa_s->ifname));
 722
 723         e->radius_conf = os_zalloc(sizeof(struct hostapd_radius_servers));
 724         assert(e->radius_conf != NULL);
 725         e->radius_conf->num_auth_servers = 1;
 726         as = os_zalloc(sizeof(struct hostapd_radius_server));
 727         assert(as != NULL);
 728 #if defined(CONFIG_NATIVE_WINDOWS) || defined(CONFIG_ANSI_C_EXTRA)
 729         {
 730                 int a[4];
 731                 u8 *pos;
 732                 sscanf(authsrv, "%d.%d.%d.%d", &a[0], &a[1], &a[2], &a[3]);
 733                 pos = (u8 *) &as->addr.u.v4;
 734                 *pos++ = a[0];
 735                 *pos++ = a[1];
 736                 *pos++ = a[2];
 737                 *pos++ = a[3];
 738         }
 739 #else /* CONFIG_NATIVE_WINDOWS or CONFIG_ANSI_C_EXTRA */
 740         inet_aton(authsrv, &as->addr.u.v4);
 741 #endif /* CONFIG_NATIVE_WINDOWS or CONFIG_ANSI_C_EXTRA */
 742         as->addr.af = AF_INET;
 743         as->port = port;
 744         as->shared_secret = (u8 *) os_strdup(secret);
 745         as->shared_secret_len = os_strlen(secret);
 746         e->radius_conf->auth_server = as;
 747         e->radius_conf->auth_servers = as;
 748         e->radius_conf->msg_dumps = 1;
 749         if (cli_addr) {
 750                 if (hostapd_parse_ip_addr(cli_addr,
 751                                           &e->radius_conf->client_addr) == 0)
 752                         e->radius_conf->force_client_addr = 1;
 753                 else {
 754                         wpa_printf(MSG_ERROR, "Invalid IP address '%s'",
 755                                    cli_addr);
 756                         assert(0);
 757                 }
 758         }
 759
 760         e->radius = radius_client_init(wpa_s, e->radius_conf);
 761         assert(e->radius != NULL);
 762
 763         res = radius_client_register(e->radius, RADIUS_AUTH,
 764                                      ieee802_1x_receive_auth, e);
 765         assert(res == 0);
 766 }
 767
 768
 769 static int scard_test(void)
 770 {
 771         struct scard_data *scard;
 772         size_t len;
 773         char imsi[20];
 774         unsigned char _rand[16];
 775 #ifdef PCSC_FUNCS
 776         unsigned char sres[4];
 777         unsigned char kc[8];
 778 #endif /* PCSC_FUNCS */
 779 #define num_triplets 5
 780         unsigned char rand_[num_triplets][16];
 781         unsigned char sres_[num_triplets][4];
 782         unsigned char kc_[num_triplets][8];
 783         int i, res;
 784         size_t j;
 785
 786 #define AKA_RAND_LEN 16
 787 #define AKA_AUTN_LEN 16
 788 #define AKA_AUTS_LEN 14
 789 #define RES_MAX_LEN 16
 790 #define IK_LEN 16
 791 #define CK_LEN 16
 792         unsigned char aka_rand[AKA_RAND_LEN];
 793         unsigned char aka_autn[AKA_AUTN_LEN];
 794         unsigned char aka_auts[AKA_AUTS_LEN];
 795         unsigned char aka_res[RES_MAX_LEN];
 796         size_t aka_res_len;
 797         unsigned char aka_ik[IK_LEN];
 798         unsigned char aka_ck[CK_LEN];
 799
 800         scard = scard_init(SCARD_TRY_BOTH);
 801         if (scard == NULL)
 802                 return -1;
 803         if (scard_set_pin(scard, "1234")) {
 804                 wpa_printf(MSG_WARNING, "PIN validation failed");
 805                 scard_deinit(scard);
 806                 return -1;
 807         }
 808
 809         len = sizeof(imsi);
 810         if (scard_get_imsi(scard, imsi, &len))
 811                 goto failed;
 812         wpa_hexdump_ascii(MSG_DEBUG, "SCARD: IMSI", (u8 *) imsi, len);
 813         /* NOTE: Permanent Username: 1 | IMSI */
 814
 815         os_memset(_rand, 0, sizeof(_rand));
 816         if (scard_gsm_auth(scard, _rand, sres, kc))
 817                 goto failed;
 818
 819         os_memset(_rand, 0xff, sizeof(_rand));
 820         if (scard_gsm_auth(scard, _rand, sres, kc))
 821                 goto failed;
 822
 823         for (i = 0; i < num_triplets; i++) {
 824                 os_memset(rand_[i], i, sizeof(rand_[i]));
 825                 if (scard_gsm_auth(scard, rand_[i], sres_[i], kc_[i]))
 826                         goto failed;
 827         }
 828
 829         for (i = 0; i < num_triplets; i++) {
 830                 printf("1");
 831                 for (j = 0; j < len; j++)
 832                         printf("%c", imsi[j]);
 833                 printf(",");
 834                 for (j = 0; j < 16; j++)
 835                         printf("%02X", rand_[i][j]);
 836                 printf(",");
 837                 for (j = 0; j < 4; j++)
 838                         printf("%02X", sres_[i][j]);
 839                 printf(",");
 840                 for (j = 0; j < 8; j++)
 841                         printf("%02X", kc_[i][j]);
 842                 printf("\n");
 843         }
 844
 845         wpa_printf(MSG_DEBUG, "Trying to use UMTS authentication");
 846
 847         /* seq 39 (0x28) */
 848         os_memset(aka_rand, 0xaa, 16);
 849         os_memcpy(aka_autn, "\x86\x71\x31\xcb\xa2\xfc\x61\xdf"
 850                   "\xa3\xb3\x97\x9d\x07\x32\xa2\x12", 16);
 851
 852         res = scard_umts_auth(scard, aka_rand, aka_autn, aka_res, &aka_res_len,
 853                               aka_ik, aka_ck, aka_auts);
 854         if (res == 0) {
 855                 wpa_printf(MSG_DEBUG, "UMTS auth completed successfully");
 856                 wpa_hexdump(MSG_DEBUG, "RES", aka_res, aka_res_len);
 857                 wpa_hexdump(MSG_DEBUG, "IK", aka_ik, IK_LEN);
 858                 wpa_hexdump(MSG_DEBUG, "CK", aka_ck, CK_LEN);
 859         } else if (res == -2) {
 860                 wpa_printf(MSG_DEBUG, "UMTS auth resulted in synchronization "
 861                            "failure");
 862                 wpa_hexdump(MSG_DEBUG, "AUTS", aka_auts, AKA_AUTS_LEN);
 863         } else {
 864                 wpa_printf(MSG_DEBUG, "UMTS auth failed");
 865         }
 866
 867 failed:
 868         scard_deinit(scard);
 869
 870         return 0;
 871 #undef num_triplets
 872 }
 873
 874
 875 static int scard_get_triplets(int argc, char *argv[])
 876 {
 877         struct scard_data *scard;
 878         size_t len;
 879         char imsi[20];
 880         unsigned char _rand[16];
 881         unsigned char sres[4];
 882         unsigned char kc[8];
 883         int num_triplets;
 884         int i;
 885         size_t j;
 886
 887         if (argc < 2 || ((num_triplets = atoi(argv[1])) <= 0)) {
 888                 printf("invalid parameters for sim command\n");
 889                 return -1;
 890         }
 891
 892         if (argc <= 2 || os_strcmp(argv[2], "debug") != 0) {
 893                 /* disable debug output */
 894                 wpa_debug_level = 99;
 895         }
 896
 897         scard = scard_init(SCARD_GSM_SIM_ONLY);
 898         if (scard == NULL) {
 899                 printf("Failed to open smartcard connection\n");
 900                 return -1;
 901         }
 902         if (scard_set_pin(scard, argv[0])) {
 903                 wpa_printf(MSG_WARNING, "PIN validation failed");
 904                 scard_deinit(scard);
 905                 return -1;
 906         }
 907
 908         len = sizeof(imsi);
 909         if (scard_get_imsi(scard, imsi, &len)) {
 910                 scard_deinit(scard);
 911                 return -1;
 912         }
 913
 914         for (i = 0; i < num_triplets; i++) {
 915                 os_memset(_rand, i, sizeof(_rand));
 916                 if (scard_gsm_auth(scard, _rand, sres, kc))
 917                         break;
 918
 919                 /* IMSI:Kc:SRES:RAND */
 920                 for (j = 0; j < len; j++)
 921                         printf("%c", imsi[j]);
 922                 printf(":");
 923                 for (j = 0; j < 8; j++)
 924                         printf("%02X", kc[j]);
 925                 printf(":");
 926                 for (j = 0; j < 4; j++)
 927                         printf("%02X", sres[j]);
 928                 printf(":");
 929                 for (j = 0; j < 16; j++)
 930                         printf("%02X", _rand[j]);
 931                 printf("\n");
 932         }
 933
 934         scard_deinit(scard);
 935
 936         return 0;
 937 }
 938
 939
 940 static void eapol_test_terminate(int sig, void *eloop_ctx,
 941                                  void *signal_ctx)
 942 {
 943         struct wpa_supplicant *wpa_s = eloop_ctx;
 944         wpa_msg(wpa_s, MSG_INFO, "Signal %d received - terminating", sig);
 945         eloop_terminate();
 946 }
 947
 948
 949 static void usage(void)
 950 {
 951         printf("usage:\n"
 952                "eapol_test [-nWS] -c<conf> [-a<AS IP>] [-p<AS port>] "
 953                "[-s<AS secret>]\\\n"
 954                "           [-r<count>] [-t<timeout>] [-C<Connect-Info>] \\\n"
 955                "           [-M<client MAC address>] \\\n"
 956                "           [-N<attr spec>] \\\n"
 957                "           [-A<client IP>]\n"
 958                "eapol_test scard\n"
 959                "eapol_test sim <PIN> <num triplets> [debug]\n"
 960                "\n");
 961         printf("options:\n"
 962                "  -c<conf> = configuration file\n"
 963                "  -a<AS IP> = IP address of the authentication server, "
 964                "default 127.0.0.1\n"
 965                "  -p<AS port> = UDP port of the authentication server, "
 966                "default 1812\n"
 967                "  -s<AS secret> = shared secret with the authentication "
 968                "server, default 'radius'\n"
 969                "  -A<client IP> = IP address of the client, default: select "
 970                "automatically\n"
 971                "  -r<count> = number of re-authentications\n"
 972                "  -W = wait for a control interface monitor before starting\n"
 973                "  -S = save configuration after authentication\n"
 974                "  -n = no MPPE keys expected\n"
 975                "  -t<timeout> = sets timeout in seconds (default: 30 s)\n"
 976                "  -C<Connect-Info> = RADIUS Connect-Info (default: "
 977                "CONNECT 11Mbps 802.11b)\n"
 978                "  -M<client MAC address> = Set own MAC address "
 979                "(Calling-Station-Id,\n"
 980                "                           default: 02:00:00:00:00:01)\n"
 981                "  -N<attr spec> = send arbitrary attribute specified by:\n"
 982                "                  attr_id:syntax:value or attr_id\n"
 983                "                  attr_id - number id of the attribute\n"
 984                "                  syntax - one of: s, d, x\n"
 985                "                     s = string\n"
 986                "                     d = integer\n"
 987                "                     x = octet string\n"
 988                "                  value - attribute value.\n"
 989                "       When only attr_id is specified, NULL will be used as "
 990                "value.\n"
 991                "       Multiple attributes can be specified by using the "
 992                "option several times.\n");
 993 }
 994
 995
 996 int main(int argc, char *argv[])
 997 {
 998         struct wpa_supplicant wpa_s;
 999         int c, ret = 1, wait_for_monitor = 0, save_config = 0;
1000         char *as_addr = "127.0.0.1";
1001         int as_port = 1812;
1002         char *as_secret = "radius";
1003         char *cli_addr = NULL;
1004         char *conf = NULL;
1005         int timeout = 30;
1006         char *pos;
1007         struct extra_radius_attr *p = NULL, *p1;
1008
1009         if (os_program_init())
1010                 return -1;
1011
1012         hostapd_logger_register_cb(hostapd_logger_cb);
1013
1014         os_memset(&eapol_test, 0, sizeof(eapol_test));
1015         eapol_test.connect_info = "CONNECT 11Mbps 802.11b";
1016         os_memcpy(eapol_test.own_addr, "\x02\x00\x00\x00\x00\x01", ETH_ALEN);
1017
1018         wpa_debug_level = 0;
1019         wpa_debug_show_keys = 1;
1020
1021         for (;;) {
1022                 c = getopt(argc, argv, "a:A:c:C:M:nN:p:r:s:St:W");
1023                 if (c < 0)
1024                         break;
1025                 switch (c) {
1026                 case 'a':
1027                         as_addr = optarg;
1028                         break;
1029                 case 'A':
1030                         cli_addr = optarg;
1031                         break;
1032                 case 'c':
1033                         conf = optarg;
1034                         break;
1035                 case 'C':
1036                         eapol_test.connect_info = optarg;
1037                         break;
1038                 case 'M':
1039                         if (hwaddr_aton(optarg, eapol_test.own_addr)) {
1040                                 usage();
1041                                 return -1;
1042                         }
1043                         break;
1044                 case 'n':
1045                         eapol_test.no_mppe_keys++;
1046                         break;
1047                 case 'p':
1048                         as_port = atoi(optarg);
1049                         break;
1050                 case 'r':
1051                         eapol_test.eapol_test_num_reauths = atoi(optarg);
1052                         break;
1053                 case 's':
1054                         as_secret = optarg;
1055                         break;
1056                 case 'S':
1057                         save_config++;
1058                         break;
1059                 case 't':
1060                         timeout = atoi(optarg);
1061                         break;
1062                 case 'W':
1063                         wait_for_monitor++;
1064                         break;
1065                 case 'N':
1066                         p1 = os_zalloc(sizeof(p1));
1067                         if (p1 == NULL)
1068                                 break;
1069                         if (!p)
1070                                 eapol_test.extra_attrs = p1;
1071                         else
1072                                 p->next = p1;
1073                         p = p1;
1074
1075                         p->type = atoi(optarg);
1076                         pos = os_strchr(optarg, ':');
1077                         if (pos == NULL) {
1078                                 p->syntax = 'n';
1079                                 p->data = NULL;
1080                                 break;
1081                         }
1082
1083                         pos++;
1084                         if (pos[0] == '\0' || pos[1] != ':') {
1085                                 printf("Incorrect format of attribute "
1086                                        "specification\n");
1087                                 break;
1088                         }
1089
1090                         p->syntax = pos[0];
1091                         p->data = pos + 2;
1092                         break;
1093                 default:
1094                         usage();
1095                         return -1;
1096                 }
1097         }
1098
1099         if (argc > optind && os_strcmp(argv[optind], "scard") == 0) {
1100                 return scard_test();
1101         }
1102
1103         if (argc > optind && os_strcmp(argv[optind], "sim") == 0) {
1104                 return scard_get_triplets(argc - optind - 1,
1105                                           &argv[optind + 1]);
1106         }
1107
1108         if (conf == NULL) {
1109                 usage();
1110                 printf("Configuration file is required.\n");
1111                 return -1;
1112         }
1113
1114         if (eap_peer_register_methods()) {
1115                 wpa_printf(MSG_ERROR, "Failed to register EAP methods");
1116                 return -1;
1117         }
1118
1119         if (eloop_init(&wpa_s)) {
1120                 wpa_printf(MSG_ERROR, "Failed to initialize event loop");
1121                 return -1;
1122         }
1123
1124         os_memset(&wpa_s, 0, sizeof(wpa_s));
1125         eapol_test.wpa_s = &wpa_s;
1126         wpa_s.conf = wpa_config_read(conf);
1127         if (wpa_s.conf == NULL) {
1128                 printf("Failed to parse configuration file '%s'.\n", conf);
1129                 return -1;
1130         }
1131         if (wpa_s.conf->ssid == NULL) {
1132                 printf("No networks defined.\n");
1133                 return -1;
1134         }
1135
1136         wpa_init_conf(&eapol_test, &wpa_s, as_addr, as_port, as_secret,
1137                       cli_addr);
1138         wpa_s.ctrl_iface = wpa_supplicant_ctrl_iface_init(&wpa_s);
1139         if (wpa_s.ctrl_iface == NULL) {
1140                 printf("Failed to initialize control interface '%s'.\n"
1141                        "You may have another eapol_test process already "
1142                        "running or the file was\n"
1143                        "left by an unclean termination of eapol_test in "
1144                        "which case you will need\n"
1145                        "to manually remove this file before starting "
1146                        "eapol_test again.\n",
1147                        wpa_s.conf->ctrl_interface);
1148                 return -1;
1149         }
1150         if (wpa_supplicant_scard_init(&wpa_s, wpa_s.conf->ssid))
1151                 return -1;
1152
1153         if (test_eapol(&eapol_test, &wpa_s, wpa_s.conf->ssid))
1154                 return -1;
1155
1156         if (wait_for_monitor)
1157                 wpa_supplicant_ctrl_iface_wait(wpa_s.ctrl_iface);
1158
1159         eloop_register_timeout(timeout, 0, eapol_test_timeout, &eapol_test,
1160                                NULL);
1161         eloop_register_timeout(0, 0, send_eap_request_identity, &wpa_s, NULL);
1162         eloop_register_signal_terminate(eapol_test_terminate, NULL);
1163         eloop_register_signal_reconfig(eapol_test_terminate, NULL);
1164         eloop_run();
1165
1166         eloop_cancel_timeout(eapol_test_timeout, &eapol_test, NULL);
1167         eloop_cancel_timeout(eapol_sm_reauth, &eapol_test, NULL);
1168
1169         if (eapol_test_compare_pmk(&eapol_test) == 0 ||
1170             eapol_test.no_mppe_keys)
1171                 ret = 0;
1172         if (eapol_test.auth_timed_out)
1173                 ret = -2;
1174         if (eapol_test.radius_access_reject_received)
1175                 ret = -3;
1176
1177         if (save_config)
1178                 wpa_config_write(conf, wpa_s.conf);
1179
1180         test_eapol_clean(&eapol_test, &wpa_s);
1181
1182         eap_peer_unregister_methods();
1183
1184         eloop_destroy();
1185
1186         printf("MPPE keys OK: %d  mismatch: %d\n",
1187                eapol_test.num_mppe_ok, eapol_test.num_mppe_mismatch);
1188         if (eapol_test.num_mppe_mismatch)
1189                 ret = -4;
1190         if (ret)
1191                 printf("FAILURE\n");
1192         else
1193                 printf("SUCCESS\n");
1194
1195         os_program_deinit();
1196
1197         return ret;
1198 }