contrib/wpa/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 struct extra_radius_attr *
 160 find_extra_attr(struct extra_radius_attr *attrs, u8 type)
 161 {
 162         struct extra_radius_attr *p;
 163         for (p = attrs; p; p = p->next) {
 164                 if (p->type == type)
 165                         return p;
 166         }
 167         return NULL;
 168 }
 169
 170
 171 static void ieee802_1x_encapsulate_radius(struct eapol_test_data *e,
 172                                           const u8 *eap, size_t len)
 173 {
 174         struct radius_msg *msg;
 175         char buf[128];
 176         const struct eap_hdr *hdr;
 177         const u8 *pos;
 178
 179         wpa_printf(MSG_DEBUG, "Encapsulating EAP message into a RADIUS "
 180                    "packet");
 181
 182         e->radius_identifier = radius_client_get_id(e->radius);
 183         msg = radius_msg_new(RADIUS_CODE_ACCESS_REQUEST,
 184                              e->radius_identifier);
 185         if (msg == NULL) {
 186                 printf("Could not create net RADIUS packet\n");
 187                 return;
 188         }
 189
 190         radius_msg_make_authenticator(msg, (u8 *) e, sizeof(*e));
 191
 192         hdr = (const struct eap_hdr *) eap;
 193         pos = (const u8 *) (hdr + 1);
 194         if (len > sizeof(*hdr) && hdr->code == EAP_CODE_RESPONSE &&
 195             pos[0] == EAP_TYPE_IDENTITY) {
 196                 pos++;
 197                 os_free(e->eap_identity);
 198                 e->eap_identity_len = len - sizeof(*hdr) - 1;
 199                 e->eap_identity = os_malloc(e->eap_identity_len);
 200                 if (e->eap_identity) {
 201                         os_memcpy(e->eap_identity, pos, e->eap_identity_len);
 202                         wpa_hexdump(MSG_DEBUG, "Learned identity from "
 203                                     "EAP-Response-Identity",
 204                                     e->eap_identity, e->eap_identity_len);
 205                 }
 206         }
 207
 208         if (e->eap_identity &&
 209             !radius_msg_add_attr(msg, RADIUS_ATTR_USER_NAME,
 210                                  e->eap_identity, e->eap_identity_len)) {
 211                 printf("Could not add User-Name\n");
 212                 goto fail;
 213         }
 214
 215         if (!find_extra_attr(e->extra_attrs, RADIUS_ATTR_NAS_IP_ADDRESS) &&
 216             !radius_msg_add_attr(msg, RADIUS_ATTR_NAS_IP_ADDRESS,
 217                                  (u8 *) &e->own_ip_addr, 4)) {
 218                 printf("Could not add NAS-IP-Address\n");
 219                 goto fail;
 220         }
 221
 222         os_snprintf(buf, sizeof(buf), RADIUS_802_1X_ADDR_FORMAT,
 223                     MAC2STR(e->wpa_s->own_addr));
 224         if (!find_extra_attr(e->extra_attrs, RADIUS_ATTR_CALLING_STATION_ID)
 225             &&
 226             !radius_msg_add_attr(msg, RADIUS_ATTR_CALLING_STATION_ID,
 227                                  (u8 *) buf, os_strlen(buf))) {
 228                 printf("Could not add Calling-Station-Id\n");
 229                 goto fail;
 230         }
 231
 232         /* TODO: should probably check MTU from driver config; 2304 is max for
 233          * IEEE 802.11, but use 1400 to avoid problems with too large packets
 234          */
 235         if (!find_extra_attr(e->extra_attrs, RADIUS_ATTR_FRAMED_MTU) &&
 236             !radius_msg_add_attr_int32(msg, RADIUS_ATTR_FRAMED_MTU, 1400)) {
 237                 printf("Could not add Framed-MTU\n");
 238                 goto fail;
 239         }
 240
 241         if (!find_extra_attr(e->extra_attrs, RADIUS_ATTR_NAS_PORT_TYPE) &&
 242             !radius_msg_add_attr_int32(msg, RADIUS_ATTR_NAS_PORT_TYPE,
 243                                        RADIUS_NAS_PORT_TYPE_IEEE_802_11)) {
 244                 printf("Could not add NAS-Port-Type\n");
 245                 goto fail;
 246         }
 247
 248         os_snprintf(buf, sizeof(buf), "%s", e->connect_info);
 249         if (!find_extra_attr(e->extra_attrs, RADIUS_ATTR_CONNECT_INFO) &&
 250             !radius_msg_add_attr(msg, RADIUS_ATTR_CONNECT_INFO,
 251                                  (u8 *) buf, os_strlen(buf))) {
 252                 printf("Could not add Connect-Info\n");
 253                 goto fail;
 254         }
 255
 256         if (add_extra_attrs(msg, e->extra_attrs) < 0)
 257                 goto fail;
 258
 259         if (eap && !radius_msg_add_eap(msg, eap, len)) {
 260                 printf("Could not add EAP-Message\n");
 261                 goto fail;
 262         }
 263
 264         /* State attribute must be copied if and only if this packet is
 265          * Access-Request reply to the previous Access-Challenge */
 266         if (e->last_recv_radius && e->last_recv_radius->hdr->code ==
 267             RADIUS_CODE_ACCESS_CHALLENGE) {
 268                 int res = radius_msg_copy_attr(msg, e->last_recv_radius,
 269                                                RADIUS_ATTR_STATE);
 270                 if (res < 0) {
 271                         printf("Could not copy State attribute from previous "
 272                                "Access-Challenge\n");
 273                         goto fail;
 274                 }
 275                 if (res > 0) {
 276                         wpa_printf(MSG_DEBUG, "  Copied RADIUS State "
 277                                    "Attribute");
 278                 }
 279         }
 280
 281         radius_client_send(e->radius, msg, RADIUS_AUTH, e->wpa_s->own_addr);
 282         return;
 283
 284  fail:
 285         radius_msg_free(msg);
 286         os_free(msg);
 287 }
 288
 289
 290 static int eapol_test_eapol_send(void *ctx, int type, const u8 *buf,
 291                                  size_t len)
 292 {
 293         /* struct wpa_supplicant *wpa_s = ctx; */
 294         printf("WPA: eapol_test_eapol_send(type=%d len=%lu)\n",
 295                type, (unsigned long) len);
 296         if (type == IEEE802_1X_TYPE_EAP_PACKET) {
 297                 wpa_hexdump(MSG_DEBUG, "TX EAP -> RADIUS", buf, len);
 298                 ieee802_1x_encapsulate_radius(&eapol_test, buf, len);
 299         }
 300         return 0;
 301 }
 302
 303
 304 static void eapol_test_set_config_blob(void *ctx,
 305                                        struct wpa_config_blob *blob)
 306 {
 307         struct wpa_supplicant *wpa_s = ctx;
 308         wpa_config_set_blob(wpa_s->conf, blob);
 309 }
 310
 311
 312 static const struct wpa_config_blob *
 313 eapol_test_get_config_blob(void *ctx, const char *name)
 314 {
 315         struct wpa_supplicant *wpa_s = ctx;
 316         return wpa_config_get_blob(wpa_s->conf, name);
 317 }
 318
 319
 320 static void eapol_test_eapol_done_cb(void *ctx)
 321 {
 322         printf("WPA: EAPOL processing complete\n");
 323 }
 324
 325
 326 static void eapol_sm_reauth(void *eloop_ctx, void *timeout_ctx)
 327 {
 328         struct eapol_test_data *e = eloop_ctx;
 329         printf("\n\n\n\n\neapol_test: Triggering EAP reauthentication\n\n");
 330         e->radius_access_accept_received = 0;
 331         send_eap_request_identity(e->wpa_s, NULL);
 332 }
 333
 334
 335 static int eapol_test_compare_pmk(struct eapol_test_data *e)
 336 {
 337         u8 pmk[PMK_LEN];
 338         int ret = 1;
 339
 340         if (eapol_sm_get_key(e->wpa_s->eapol, pmk, PMK_LEN) == 0) {
 341                 wpa_hexdump(MSG_DEBUG, "PMK from EAPOL", pmk, PMK_LEN);
 342                 if (os_memcmp(pmk, e->authenticator_pmk, PMK_LEN) != 0) {
 343                         printf("WARNING: PMK mismatch\n");
 344                         wpa_hexdump(MSG_DEBUG, "PMK from AS",
 345                                     e->authenticator_pmk, PMK_LEN);
 346                 } else if (e->radius_access_accept_received)
 347                         ret = 0;
 348         } else if (e->authenticator_pmk_len == 16 &&
 349                    eapol_sm_get_key(e->wpa_s->eapol, pmk, 16) == 0) {
 350                 wpa_hexdump(MSG_DEBUG, "LEAP PMK from EAPOL", pmk, 16);
 351                 if (os_memcmp(pmk, e->authenticator_pmk, 16) != 0) {
 352                         printf("WARNING: PMK mismatch\n");
 353                         wpa_hexdump(MSG_DEBUG, "PMK from AS",
 354                                     e->authenticator_pmk, 16);
 355                 } else if (e->radius_access_accept_received)
 356                         ret = 0;
 357         } else if (e->radius_access_accept_received && e->no_mppe_keys) {
 358                 /* No keying material expected */
 359                 ret = 0;
 360         }
 361
 362         if (ret && !e->no_mppe_keys)
 363                 e->num_mppe_mismatch++;
 364         else if (!e->no_mppe_keys)
 365                 e->num_mppe_ok++;
 366
 367         return ret;
 368 }
 369
 370
 371 static void eapol_sm_cb(struct eapol_sm *eapol, int success, void *ctx)
 372 {
 373         struct eapol_test_data *e = ctx;
 374         printf("eapol_sm_cb: success=%d\n", success);
 375         e->eapol_test_num_reauths--;
 376         if (e->eapol_test_num_reauths < 0)
 377                 eloop_terminate();
 378         else {
 379                 eapol_test_compare_pmk(e);
 380                 eloop_register_timeout(0, 100000, eapol_sm_reauth, e, NULL);
 381         }
 382 }
 383
 384
 385 static int test_eapol(struct eapol_test_data *e, struct wpa_supplicant *wpa_s,
 386                       struct wpa_ssid *ssid)
 387 {
 388         struct eapol_config eapol_conf;
 389         struct eapol_ctx *ctx;
 390
 391         ctx = os_zalloc(sizeof(*ctx));
 392         if (ctx == NULL) {
 393                 printf("Failed to allocate EAPOL context.\n");
 394                 return -1;
 395         }
 396         ctx->ctx = wpa_s;
 397         ctx->msg_ctx = wpa_s;
 398         ctx->scard_ctx = wpa_s->scard;
 399         ctx->cb = eapol_sm_cb;
 400         ctx->cb_ctx = e;
 401         ctx->eapol_send_ctx = wpa_s;
 402         ctx->preauth = 0;
 403         ctx->eapol_done_cb = eapol_test_eapol_done_cb;
 404         ctx->eapol_send = eapol_test_eapol_send;
 405         ctx->set_config_blob = eapol_test_set_config_blob;
 406         ctx->get_config_blob = eapol_test_get_config_blob;
 407 #ifdef EAP_TLS_OPENSSL
 408         ctx->opensc_engine_path = wpa_s->conf->opensc_engine_path;
 409         ctx->pkcs11_engine_path = wpa_s->conf->pkcs11_engine_path;
 410         ctx->pkcs11_module_path = wpa_s->conf->pkcs11_module_path;
 411 #endif /* EAP_TLS_OPENSSL */
 412
 413         wpa_s->eapol = eapol_sm_init(ctx);
 414         if (wpa_s->eapol == NULL) {
 415                 os_free(ctx);
 416                 printf("Failed to initialize EAPOL state machines.\n");
 417                 return -1;
 418         }
 419
 420         wpa_s->current_ssid = ssid;
 421         os_memset(&eapol_conf, 0, sizeof(eapol_conf));
 422         eapol_conf.accept_802_1x_keys = 1;
 423         eapol_conf.required_keys = 0;
 424         eapol_conf.fast_reauth = wpa_s->conf->fast_reauth;
 425         eapol_conf.workaround = ssid->eap_workaround;
 426         eapol_sm_notify_config(wpa_s->eapol, &ssid->eap, &eapol_conf);
 427         eapol_sm_register_scard_ctx(wpa_s->eapol, wpa_s->scard);
 428
 429
 430         eapol_sm_notify_portValid(wpa_s->eapol, FALSE);
 431         /* 802.1X::portControl = Auto */
 432         eapol_sm_notify_portEnabled(wpa_s->eapol, TRUE);
 433
 434         return 0;
 435 }
 436
 437
 438 static void test_eapol_clean(struct eapol_test_data *e,
 439                              struct wpa_supplicant *wpa_s)
 440 {
 441         struct extra_radius_attr *p, *prev;
 442
 443         radius_client_deinit(e->radius);
 444         os_free(e->last_eap_radius);
 445         if (e->last_recv_radius) {
 446                 radius_msg_free(e->last_recv_radius);
 447                 os_free(e->last_recv_radius);
 448         }
 449         os_free(e->eap_identity);
 450         e->eap_identity = NULL;
 451         eapol_sm_deinit(wpa_s->eapol);
 452         wpa_s->eapol = NULL;
 453         if (e->radius_conf && e->radius_conf->auth_server) {
 454                 os_free(e->radius_conf->auth_server->shared_secret);
 455                 os_free(e->radius_conf->auth_server);
 456         }
 457         os_free(e->radius_conf);
 458         e->radius_conf = NULL;
 459         scard_deinit(wpa_s->scard);
 460         if (wpa_s->ctrl_iface) {
 461                 wpa_supplicant_ctrl_iface_deinit(wpa_s->ctrl_iface);
 462                 wpa_s->ctrl_iface = NULL;
 463         }
 464         wpa_config_free(wpa_s->conf);
 465
 466         p = e->extra_attrs;
 467         while (p) {
 468                 prev = p;
 469                 p = p->next;
 470                 os_free(prev);
 471         }
 472 }
 473
 474
 475 static void send_eap_request_identity(void *eloop_ctx, void *timeout_ctx)
 476 {
 477         struct wpa_supplicant *wpa_s = eloop_ctx;
 478         u8 buf[100], *pos;
 479         struct ieee802_1x_hdr *hdr;
 480         struct eap_hdr *eap;
 481
 482         hdr = (struct ieee802_1x_hdr *) buf;
 483         hdr->version = EAPOL_VERSION;
 484         hdr->type = IEEE802_1X_TYPE_EAP_PACKET;
 485         hdr->length = htons(5);
 486
 487         eap = (struct eap_hdr *) (hdr + 1);
 488         eap->code = EAP_CODE_REQUEST;
 489         eap->identifier = 0;
 490         eap->length = htons(5);
 491         pos = (u8 *) (eap + 1);
 492         *pos = EAP_TYPE_IDENTITY;
 493
 494         printf("Sending fake EAP-Request-Identity\n");
 495         eapol_sm_rx_eapol(wpa_s->eapol, wpa_s->bssid, buf,
 496                           sizeof(*hdr) + 5);
 497 }
 498
 499
 500 static void eapol_test_timeout(void *eloop_ctx, void *timeout_ctx)
 501 {
 502         struct eapol_test_data *e = eloop_ctx;
 503         printf("EAPOL test timed out\n");
 504         e->auth_timed_out = 1;
 505         eloop_terminate();
 506 }
 507
 508
 509 static char *eap_type_text(u8 type)
 510 {
 511         switch (type) {
 512         case EAP_TYPE_IDENTITY: return "Identity";
 513         case EAP_TYPE_NOTIFICATION: return "Notification";
 514         case EAP_TYPE_NAK: return "Nak";
 515         case EAP_TYPE_TLS: return "TLS";
 516         case EAP_TYPE_TTLS: return "TTLS";
 517         case EAP_TYPE_PEAP: return "PEAP";
 518         case EAP_TYPE_SIM: return "SIM";
 519         case EAP_TYPE_GTC: return "GTC";
 520         case EAP_TYPE_MD5: return "MD5";
 521         case EAP_TYPE_OTP: return "OTP";
 522         case EAP_TYPE_FAST: return "FAST";
 523         case EAP_TYPE_SAKE: return "SAKE";
 524         case EAP_TYPE_PSK: return "PSK";
 525         default: return "Unknown";
 526         }
 527 }
 528
 529
 530 static void ieee802_1x_decapsulate_radius(struct eapol_test_data *e)
 531 {
 532         u8 *eap;
 533         size_t len;
 534         struct eap_hdr *hdr;
 535         int eap_type = -1;
 536         char buf[64];
 537         struct radius_msg *msg;
 538
 539         if (e->last_recv_radius == NULL)
 540                 return;
 541
 542         msg = e->last_recv_radius;
 543
 544         eap = radius_msg_get_eap(msg, &len);
 545         if (eap == NULL) {
 546                 /* draft-aboba-radius-rfc2869bis-20.txt, Chap. 2.6.3:
 547                  * RADIUS server SHOULD NOT send Access-Reject/no EAP-Message
 548                  * attribute */
 549                 wpa_printf(MSG_DEBUG, "could not extract "
 550                                "EAP-Message from RADIUS message");
 551                 os_free(e->last_eap_radius);
 552                 e->last_eap_radius = NULL;
 553                 e->last_eap_radius_len = 0;
 554                 return;
 555         }
 556
 557         if (len < sizeof(*hdr)) {
 558                 wpa_printf(MSG_DEBUG, "too short EAP packet "
 559                                "received from authentication server");
 560                 os_free(eap);
 561                 return;
 562         }
 563
 564         if (len > sizeof(*hdr))
 565                 eap_type = eap[sizeof(*hdr)];
 566
 567         hdr = (struct eap_hdr *) eap;
 568         switch (hdr->code) {
 569         case EAP_CODE_REQUEST:
 570                 os_snprintf(buf, sizeof(buf), "EAP-Request-%s (%d)",
 571                             eap_type >= 0 ? eap_type_text(eap_type) : "??",
 572                             eap_type);
 573                 break;
 574         case EAP_CODE_RESPONSE:
 575                 os_snprintf(buf, sizeof(buf), "EAP Response-%s (%d)",
 576                             eap_type >= 0 ? eap_type_text(eap_type) : "??",
 577                             eap_type);
 578                 break;
 579         case EAP_CODE_SUCCESS:
 580                 os_strlcpy(buf, "EAP Success", sizeof(buf));
 581                 /* LEAP uses EAP Success within an authentication, so must not
 582                  * stop here with eloop_terminate(); */
 583                 break;
 584         case EAP_CODE_FAILURE:
 585                 os_strlcpy(buf, "EAP Failure", sizeof(buf));
 586                 eloop_terminate();
 587                 break;
 588         default:
 589                 os_strlcpy(buf, "unknown EAP code", sizeof(buf));
 590                 wpa_hexdump(MSG_DEBUG, "Decapsulated EAP packet", eap, len);
 591                 break;
 592         }
 593         wpa_printf(MSG_DEBUG, "decapsulated EAP packet (code=%d "
 594                        "id=%d len=%d) from RADIUS server: %s",
 595                       hdr->code, hdr->identifier, ntohs(hdr->length), buf);
 596
 597         /* sta->eapol_sm->be_auth.idFromServer = hdr->identifier; */
 598
 599         os_free(e->last_eap_radius);
 600         e->last_eap_radius = eap;
 601         e->last_eap_radius_len = len;
 602
 603         {
 604                 struct ieee802_1x_hdr *dot1x;
 605                 dot1x = os_malloc(sizeof(*dot1x) + len);
 606                 assert(dot1x != NULL);
 607                 dot1x->version = EAPOL_VERSION;
 608                 dot1x->type = IEEE802_1X_TYPE_EAP_PACKET;
 609                 dot1x->length = htons(len);
 610                 os_memcpy((u8 *) (dot1x + 1), eap, len);
 611                 eapol_sm_rx_eapol(e->wpa_s->eapol, e->wpa_s->bssid,
 612                                   (u8 *) dot1x, sizeof(*dot1x) + len);
 613                 os_free(dot1x);
 614         }
 615 }
 616
 617
 618 static void ieee802_1x_get_keys(struct eapol_test_data *e,
 619                                 struct radius_msg *msg, struct radius_msg *req,
 620                                 u8 *shared_secret, size_t shared_secret_len)
 621 {
 622         struct radius_ms_mppe_keys *keys;
 623
 624         keys = radius_msg_get_ms_keys(msg, req, shared_secret,
 625                                       shared_secret_len);
 626         if (keys && keys->send == NULL && keys->recv == NULL) {
 627                 os_free(keys);
 628                 keys = radius_msg_get_cisco_keys(msg, req, shared_secret,
 629                                                  shared_secret_len);
 630         }
 631
 632         if (keys) {
 633                 if (keys->send) {
 634                         wpa_hexdump(MSG_DEBUG, "MS-MPPE-Send-Key (sign)",
 635                                     keys->send, keys->send_len);
 636                 }
 637                 if (keys->recv) {
 638                         wpa_hexdump(MSG_DEBUG, "MS-MPPE-Recv-Key (crypt)",
 639                                     keys->recv, keys->recv_len);
 640                         e->authenticator_pmk_len =
 641                                 keys->recv_len > PMK_LEN ? PMK_LEN :
 642                                 keys->recv_len;
 643                         os_memcpy(e->authenticator_pmk, keys->recv,
 644                                   e->authenticator_pmk_len);
 645                         if (e->authenticator_pmk_len == 16 && keys->send &&
 646                             keys->send_len == 16) {
 647                                 /* MS-CHAP-v2 derives 16 octet keys */
 648                                 wpa_printf(MSG_DEBUG, "Use MS-MPPE-Send-Key "
 649                                            "to extend PMK to 32 octets");
 650                                 os_memcpy(e->authenticator_pmk +
 651                                           e->authenticator_pmk_len,
 652                                           keys->send, keys->send_len);
 653                                 e->authenticator_pmk_len += keys->send_len;
 654                         }
 655                 }
 656
 657                 os_free(keys->send);
 658                 os_free(keys->recv);
 659                 os_free(keys);
 660         }
 661 }
 662
 663
 664 /* Process the RADIUS frames from Authentication Server */
 665 static RadiusRxResult
 666 ieee802_1x_receive_auth(struct radius_msg *msg, struct radius_msg *req,
 667                         u8 *shared_secret, size_t shared_secret_len,
 668                         void *data)
 669 {
 670         struct eapol_test_data *e = data;
 671
 672         /* RFC 2869, Ch. 5.13: valid Message-Authenticator attribute MUST be
 673          * present when packet contains an EAP-Message attribute */
 674         if (msg->hdr->code == RADIUS_CODE_ACCESS_REJECT &&
 675             radius_msg_get_attr(msg, RADIUS_ATTR_MESSAGE_AUTHENTICATOR, NULL,
 676                                 0) < 0 &&
 677             radius_msg_get_attr(msg, RADIUS_ATTR_EAP_MESSAGE, NULL, 0) < 0) {
 678                 wpa_printf(MSG_DEBUG, "Allowing RADIUS "
 679                               "Access-Reject without Message-Authenticator "
 680                               "since it does not include EAP-Message\n");
 681         } else if (radius_msg_verify(msg, shared_secret, shared_secret_len,
 682                                      req, 1)) {
 683                 printf("Incoming RADIUS packet did not have correct "
 684                        "Message-Authenticator - dropped\n");
 685                 return RADIUS_RX_UNKNOWN;
 686         }
 687
 688         if (msg->hdr->code != RADIUS_CODE_ACCESS_ACCEPT &&
 689             msg->hdr->code != RADIUS_CODE_ACCESS_REJECT &&
 690             msg->hdr->code != RADIUS_CODE_ACCESS_CHALLENGE) {
 691                 printf("Unknown RADIUS message code\n");
 692                 return RADIUS_RX_UNKNOWN;
 693         }
 694
 695         e->radius_identifier = -1;
 696         wpa_printf(MSG_DEBUG, "RADIUS packet matching with station");
 697
 698         if (e->last_recv_radius) {
 699                 radius_msg_free(e->last_recv_radius);
 700                 os_free(e->last_recv_radius);
 701         }
 702
 703         e->last_recv_radius = msg;
 704
 705         switch (msg->hdr->code) {
 706         case RADIUS_CODE_ACCESS_ACCEPT:
 707                 e->radius_access_accept_received = 1;
 708                 ieee802_1x_get_keys(e, msg, req, shared_secret,
 709                                     shared_secret_len);
 710                 break;
 711         case RADIUS_CODE_ACCESS_REJECT:
 712                 e->radius_access_reject_received = 1;
 713                 break;
 714         }
 715
 716         ieee802_1x_decapsulate_radius(e);
 717
 718         if ((msg->hdr->code == RADIUS_CODE_ACCESS_ACCEPT &&
 719              e->eapol_test_num_reauths < 0) ||
 720             msg->hdr->code == RADIUS_CODE_ACCESS_REJECT) {
 721                 eloop_terminate();
 722         }
 723
 724         return RADIUS_RX_QUEUED;
 725 }
 726
 727
 728 static void wpa_init_conf(struct eapol_test_data *e,
 729                           struct wpa_supplicant *wpa_s, const char *authsrv,
 730                           int port, const char *secret,
 731                           const char *cli_addr)
 732 {
 733         struct hostapd_radius_server *as;
 734         int res;
 735
 736         wpa_s->bssid[5] = 1;
 737         os_memcpy(wpa_s->own_addr, e->own_addr, ETH_ALEN);
 738         e->own_ip_addr.s_addr = htonl((127 << 24) | 1);
 739         os_strlcpy(wpa_s->ifname, "test", sizeof(wpa_s->ifname));
 740
 741         e->radius_conf = os_zalloc(sizeof(struct hostapd_radius_servers));
 742         assert(e->radius_conf != NULL);
 743         e->radius_conf->num_auth_servers = 1;
 744         as = os_zalloc(sizeof(struct hostapd_radius_server));
 745         assert(as != NULL);
 746 #if defined(CONFIG_NATIVE_WINDOWS) || defined(CONFIG_ANSI_C_EXTRA)
 747         {
 748                 int a[4];
 749                 u8 *pos;
 750                 sscanf(authsrv, "%d.%d.%d.%d", &a[0], &a[1], &a[2], &a[3]);
 751                 pos = (u8 *) &as->addr.u.v4;
 752                 *pos++ = a[0];
 753                 *pos++ = a[1];
 754                 *pos++ = a[2];
 755                 *pos++ = a[3];
 756         }
 757 #else /* CONFIG_NATIVE_WINDOWS or CONFIG_ANSI_C_EXTRA */
 758         inet_aton(authsrv, &as->addr.u.v4);
 759 #endif /* CONFIG_NATIVE_WINDOWS or CONFIG_ANSI_C_EXTRA */
 760         as->addr.af = AF_INET;
 761         as->port = port;
 762         as->shared_secret = (u8 *) os_strdup(secret);
 763         as->shared_secret_len = os_strlen(secret);
 764         e->radius_conf->auth_server = as;
 765         e->radius_conf->auth_servers = as;
 766         e->radius_conf->msg_dumps = 1;
 767         if (cli_addr) {
 768                 if (hostapd_parse_ip_addr(cli_addr,
 769                                           &e->radius_conf->client_addr) == 0)
 770                         e->radius_conf->force_client_addr = 1;
 771                 else {
 772                         wpa_printf(MSG_ERROR, "Invalid IP address '%s'",
 773                                    cli_addr);
 774                         assert(0);
 775                 }
 776         }
 777
 778         e->radius = radius_client_init(wpa_s, e->radius_conf);
 779         assert(e->radius != NULL);
 780
 781         res = radius_client_register(e->radius, RADIUS_AUTH,
 782                                      ieee802_1x_receive_auth, e);
 783         assert(res == 0);
 784 }
 785
 786
 787 static int scard_test(void)
 788 {
 789         struct scard_data *scard;
 790         size_t len;
 791         char imsi[20];
 792         unsigned char _rand[16];
 793 #ifdef PCSC_FUNCS
 794         unsigned char sres[4];
 795         unsigned char kc[8];
 796 #endif /* PCSC_FUNCS */
 797 #define num_triplets 5
 798         unsigned char rand_[num_triplets][16];
 799         unsigned char sres_[num_triplets][4];
 800         unsigned char kc_[num_triplets][8];
 801         int i, res;
 802         size_t j;
 803
 804 #define AKA_RAND_LEN 16
 805 #define AKA_AUTN_LEN 16
 806 #define AKA_AUTS_LEN 14
 807 #define RES_MAX_LEN 16
 808 #define IK_LEN 16
 809 #define CK_LEN 16
 810         unsigned char aka_rand[AKA_RAND_LEN];
 811         unsigned char aka_autn[AKA_AUTN_LEN];
 812         unsigned char aka_auts[AKA_AUTS_LEN];
 813         unsigned char aka_res[RES_MAX_LEN];
 814         size_t aka_res_len;
 815         unsigned char aka_ik[IK_LEN];
 816         unsigned char aka_ck[CK_LEN];
 817
 818         scard = scard_init(SCARD_TRY_BOTH);
 819         if (scard == NULL)
 820                 return -1;
 821         if (scard_set_pin(scard, "1234")) {
 822                 wpa_printf(MSG_WARNING, "PIN validation failed");
 823                 scard_deinit(scard);
 824                 return -1;
 825         }
 826
 827         len = sizeof(imsi);
 828         if (scard_get_imsi(scard, imsi, &len))
 829                 goto failed;
 830         wpa_hexdump_ascii(MSG_DEBUG, "SCARD: IMSI", (u8 *) imsi, len);
 831         /* NOTE: Permanent Username: 1 | IMSI */
 832
 833         os_memset(_rand, 0, sizeof(_rand));
 834         if (scard_gsm_auth(scard, _rand, sres, kc))
 835                 goto failed;
 836
 837         os_memset(_rand, 0xff, sizeof(_rand));
 838         if (scard_gsm_auth(scard, _rand, sres, kc))
 839                 goto failed;
 840
 841         for (i = 0; i < num_triplets; i++) {
 842                 os_memset(rand_[i], i, sizeof(rand_[i]));
 843                 if (scard_gsm_auth(scard, rand_[i], sres_[i], kc_[i]))
 844                         goto failed;
 845         }
 846
 847         for (i = 0; i < num_triplets; i++) {
 848                 printf("1");
 849                 for (j = 0; j < len; j++)
 850                         printf("%c", imsi[j]);
 851                 printf(",");
 852                 for (j = 0; j < 16; j++)
 853                         printf("%02X", rand_[i][j]);
 854                 printf(",");
 855                 for (j = 0; j < 4; j++)
 856                         printf("%02X", sres_[i][j]);
 857                 printf(",");
 858                 for (j = 0; j < 8; j++)
 859                         printf("%02X", kc_[i][j]);
 860                 printf("\n");
 861         }
 862
 863         wpa_printf(MSG_DEBUG, "Trying to use UMTS authentication");
 864
 865         /* seq 39 (0x28) */
 866         os_memset(aka_rand, 0xaa, 16);
 867         os_memcpy(aka_autn, "\x86\x71\x31\xcb\xa2\xfc\x61\xdf"
 868                   "\xa3\xb3\x97\x9d\x07\x32\xa2\x12", 16);
 869
 870         res = scard_umts_auth(scard, aka_rand, aka_autn, aka_res, &aka_res_len,
 871                               aka_ik, aka_ck, aka_auts);
 872         if (res == 0) {
 873                 wpa_printf(MSG_DEBUG, "UMTS auth completed successfully");
 874                 wpa_hexdump(MSG_DEBUG, "RES", aka_res, aka_res_len);
 875                 wpa_hexdump(MSG_DEBUG, "IK", aka_ik, IK_LEN);
 876                 wpa_hexdump(MSG_DEBUG, "CK", aka_ck, CK_LEN);
 877         } else if (res == -2) {
 878                 wpa_printf(MSG_DEBUG, "UMTS auth resulted in synchronization "
 879                            "failure");
 880                 wpa_hexdump(MSG_DEBUG, "AUTS", aka_auts, AKA_AUTS_LEN);
 881         } else {
 882                 wpa_printf(MSG_DEBUG, "UMTS auth failed");
 883         }
 884
 885 failed:
 886         scard_deinit(scard);
 887
 888         return 0;
 889 #undef num_triplets
 890 }
 891
 892
 893 static int scard_get_triplets(int argc, char *argv[])
 894 {
 895         struct scard_data *scard;
 896         size_t len;
 897         char imsi[20];
 898         unsigned char _rand[16];
 899         unsigned char sres[4];
 900         unsigned char kc[8];
 901         int num_triplets;
 902         int i;
 903         size_t j;
 904
 905         if (argc < 2 || ((num_triplets = atoi(argv[1])) <= 0)) {
 906                 printf("invalid parameters for sim command\n");
 907                 return -1;
 908         }
 909
 910         if (argc <= 2 || os_strcmp(argv[2], "debug") != 0) {
 911                 /* disable debug output */
 912                 wpa_debug_level = 99;
 913         }
 914
 915         scard = scard_init(SCARD_GSM_SIM_ONLY);
 916         if (scard == NULL) {
 917                 printf("Failed to open smartcard connection\n");
 918                 return -1;
 919         }
 920         if (scard_set_pin(scard, argv[0])) {
 921                 wpa_printf(MSG_WARNING, "PIN validation failed");
 922                 scard_deinit(scard);
 923                 return -1;
 924         }
 925
 926         len = sizeof(imsi);
 927         if (scard_get_imsi(scard, imsi, &len)) {
 928                 scard_deinit(scard);
 929                 return -1;
 930         }
 931
 932         for (i = 0; i < num_triplets; i++) {
 933                 os_memset(_rand, i, sizeof(_rand));
 934                 if (scard_gsm_auth(scard, _rand, sres, kc))
 935                         break;
 936
 937                 /* IMSI:Kc:SRES:RAND */
 938                 for (j = 0; j < len; j++)
 939                         printf("%c", imsi[j]);
 940                 printf(":");
 941                 for (j = 0; j < 8; j++)
 942                         printf("%02X", kc[j]);
 943                 printf(":");
 944                 for (j = 0; j < 4; j++)
 945                         printf("%02X", sres[j]);
 946                 printf(":");
 947                 for (j = 0; j < 16; j++)
 948                         printf("%02X", _rand[j]);
 949                 printf("\n");
 950         }
 951
 952         scard_deinit(scard);
 953
 954         return 0;
 955 }
 956
 957
 958 static void eapol_test_terminate(int sig, void *eloop_ctx,
 959                                  void *signal_ctx)
 960 {
 961         struct wpa_supplicant *wpa_s = eloop_ctx;
 962         wpa_msg(wpa_s, MSG_INFO, "Signal %d received - terminating", sig);
 963         eloop_terminate();
 964 }
 965
 966
 967 static void usage(void)
 968 {
 969         printf("usage:\n"
 970                "eapol_test [-nWS] -c<conf> [-a<AS IP>] [-p<AS port>] "
 971                "[-s<AS secret>]\\\n"
 972                "           [-r<count>] [-t<timeout>] [-C<Connect-Info>] \\\n"
 973                "           [-M<client MAC address>] \\\n"
 974                "           [-N<attr spec>] \\\n"
 975                "           [-A<client IP>]\n"
 976                "eapol_test scard\n"
 977                "eapol_test sim <PIN> <num triplets> [debug]\n"
 978                "\n");
 979         printf("options:\n"
 980                "  -c<conf> = configuration file\n"
 981                "  -a<AS IP> = IP address of the authentication server, "
 982                "default 127.0.0.1\n"
 983                "  -p<AS port> = UDP port of the authentication server, "
 984                "default 1812\n"
 985                "  -s<AS secret> = shared secret with the authentication "
 986                "server, default 'radius'\n"
 987                "  -A<client IP> = IP address of the client, default: select "
 988                "automatically\n"
 989                "  -r<count> = number of re-authentications\n"
 990                "  -W = wait for a control interface monitor before starting\n"
 991                "  -S = save configuration after authentication\n"
 992                "  -n = no MPPE keys expected\n"
 993                "  -t<timeout> = sets timeout in seconds (default: 30 s)\n"
 994                "  -C<Connect-Info> = RADIUS Connect-Info (default: "
 995                "CONNECT 11Mbps 802.11b)\n"
 996                "  -M<client MAC address> = Set own MAC address "
 997                "(Calling-Station-Id,\n"
 998                "                           default: 02:00:00:00:00:01)\n"
 999                "  -N<attr spec> = send arbitrary attribute specified by:\n"
1000                "                  attr_id:syntax:value or attr_id\n"
1001                "                  attr_id - number id of the attribute\n"
1002                "                  syntax - one of: s, d, x\n"
1003                "                     s = string\n"
1004                "                     d = integer\n"
1005                "                     x = octet string\n"
1006                "                  value - attribute value.\n"
1007                "       When only attr_id is specified, NULL will be used as "
1008                "value.\n"
1009                "       Multiple attributes can be specified by using the "
1010                "option several times.\n");
1011 }
1012
1013
1014 int main(int argc, char *argv[])
1015 {
1016         struct wpa_supplicant wpa_s;
1017         int c, ret = 1, wait_for_monitor = 0, save_config = 0;
1018         char *as_addr = "127.0.0.1";
1019         int as_port = 1812;
1020         char *as_secret = "radius";
1021         char *cli_addr = NULL;
1022         char *conf = NULL;
1023         int timeout = 30;
1024         char *pos;
1025         struct extra_radius_attr *p = NULL, *p1;
1026
1027         if (os_program_init())
1028                 return -1;
1029
1030         hostapd_logger_register_cb(hostapd_logger_cb);
1031
1032         os_memset(&eapol_test, 0, sizeof(eapol_test));
1033         eapol_test.connect_info = "CONNECT 11Mbps 802.11b";
1034         os_memcpy(eapol_test.own_addr, "\x02\x00\x00\x00\x00\x01", ETH_ALEN);
1035
1036         wpa_debug_level = 0;
1037         wpa_debug_show_keys = 1;
1038
1039         for (;;) {
1040                 c = getopt(argc, argv, "a:A:c:C:M:nN:p:r:s:St:W");
1041                 if (c < 0)
1042                         break;
1043                 switch (c) {
1044                 case 'a':
1045                         as_addr = optarg;
1046                         break;
1047                 case 'A':
1048                         cli_addr = optarg;
1049                         break;
1050                 case 'c':
1051                         conf = optarg;
1052                         break;
1053                 case 'C':
1054                         eapol_test.connect_info = optarg;
1055                         break;
1056                 case 'M':
1057                         if (hwaddr_aton(optarg, eapol_test.own_addr)) {
1058                                 usage();
1059                                 return -1;
1060                         }
1061                         break;
1062                 case 'n':
1063                         eapol_test.no_mppe_keys++;
1064                         break;
1065                 case 'p':
1066                         as_port = atoi(optarg);
1067                         break;
1068                 case 'r':
1069                         eapol_test.eapol_test_num_reauths = atoi(optarg);
1070                         break;
1071                 case 's':
1072                         as_secret = optarg;
1073                         break;
1074                 case 'S':
1075                         save_config++;
1076                         break;
1077                 case 't':
1078                         timeout = atoi(optarg);
1079                         break;
1080                 case 'W':
1081                         wait_for_monitor++;
1082                         break;
1083                 case 'N':
1084                         p1 = os_zalloc(sizeof(p1));
1085                         if (p1 == NULL)
1086                                 break;
1087                         if (!p)
1088                                 eapol_test.extra_attrs = p1;
1089                         else
1090                                 p->next = p1;
1091                         p = p1;
1092
1093                         p->type = atoi(optarg);
1094                         pos = os_strchr(optarg, ':');
1095                         if (pos == NULL) {
1096                                 p->syntax = 'n';
1097                                 p->data = NULL;
1098                                 break;
1099                         }
1100
1101                         pos++;
1102                         if (pos[0] == '\0' || pos[1] != ':') {
1103                                 printf("Incorrect format of attribute "
1104                                        "specification\n");
1105                                 break;
1106                         }
1107
1108                         p->syntax = pos[0];
1109                         p->data = pos + 2;
1110                         break;
1111                 default:
1112                         usage();
1113                         return -1;
1114                 }
1115         }
1116
1117         if (argc > optind && os_strcmp(argv[optind], "scard") == 0) {
1118                 return scard_test();
1119         }
1120
1121         if (argc > optind && os_strcmp(argv[optind], "sim") == 0) {
1122                 return scard_get_triplets(argc - optind - 1,
1123                                           &argv[optind + 1]);
1124         }
1125
1126         if (conf == NULL) {
1127                 usage();
1128                 printf("Configuration file is required.\n");
1129                 return -1;
1130         }
1131
1132         if (eap_peer_register_methods()) {
1133                 wpa_printf(MSG_ERROR, "Failed to register EAP methods");
1134                 return -1;
1135         }
1136
1137         if (eloop_init(&wpa_s)) {
1138                 wpa_printf(MSG_ERROR, "Failed to initialize event loop");
1139                 return -1;
1140         }
1141
1142         os_memset(&wpa_s, 0, sizeof(wpa_s));
1143         eapol_test.wpa_s = &wpa_s;
1144         wpa_s.conf = wpa_config_read(conf);
1145         if (wpa_s.conf == NULL) {
1146                 printf("Failed to parse configuration file '%s'.\n", conf);
1147                 return -1;
1148         }
1149         if (wpa_s.conf->ssid == NULL) {
1150                 printf("No networks defined.\n");
1151                 return -1;
1152         }
1153
1154         wpa_init_conf(&eapol_test, &wpa_s, as_addr, as_port, as_secret,
1155                       cli_addr);
1156         wpa_s.ctrl_iface = wpa_supplicant_ctrl_iface_init(&wpa_s);
1157         if (wpa_s.ctrl_iface == NULL) {
1158                 printf("Failed to initialize control interface '%s'.\n"
1159                        "You may have another eapol_test process already "
1160                        "running or the file was\n"
1161                        "left by an unclean termination of eapol_test in "
1162                        "which case you will need\n"
1163                        "to manually remove this file before starting "
1164                        "eapol_test again.\n",
1165                        wpa_s.conf->ctrl_interface);
1166                 return -1;
1167         }
1168         if (wpa_supplicant_scard_init(&wpa_s, wpa_s.conf->ssid))
1169                 return -1;
1170
1171         if (test_eapol(&eapol_test, &wpa_s, wpa_s.conf->ssid))
1172                 return -1;
1173
1174         if (wait_for_monitor)
1175                 wpa_supplicant_ctrl_iface_wait(wpa_s.ctrl_iface);
1176
1177         eloop_register_timeout(timeout, 0, eapol_test_timeout, &eapol_test,
1178                                NULL);
1179         eloop_register_timeout(0, 0, send_eap_request_identity, &wpa_s, NULL);
1180         eloop_register_signal_terminate(eapol_test_terminate, NULL);
1181         eloop_register_signal_reconfig(eapol_test_terminate, NULL);
1182         eloop_run();
1183
1184         eloop_cancel_timeout(eapol_test_timeout, &eapol_test, NULL);
1185         eloop_cancel_timeout(eapol_sm_reauth, &eapol_test, NULL);
1186
1187         if (eapol_test_compare_pmk(&eapol_test) == 0 ||
1188             eapol_test.no_mppe_keys)
1189                 ret = 0;
1190         if (eapol_test.auth_timed_out)
1191                 ret = -2;
1192         if (eapol_test.radius_access_reject_received)
1193                 ret = -3;
1194
1195         if (save_config)
1196                 wpa_config_write(conf, wpa_s.conf);
1197
1198         test_eapol_clean(&eapol_test, &wpa_s);
1199
1200         eap_peer_unregister_methods();
1201
1202         eloop_destroy();
1203
1204         printf("MPPE keys OK: %d  mismatch: %d\n",
1205                eapol_test.num_mppe_ok, eapol_test.num_mppe_mismatch);
1206         if (eapol_test.num_mppe_mismatch)
1207                 ret = -4;
1208         if (ret)
1209                 printf("FAILURE\n");
1210         else
1211                 printf("SUCCESS\n");
1212
1213         os_program_deinit();
1214
1215         return ret;
1216 }