eapol_test.c
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00001 /*
00002  * WPA Supplicant - test code
00003  * Copyright (c) 2003-2007, Jouni Malinen <j@w1.fi>
00004  *
00005  * This program is free software; you can redistribute it and/or modify
00006  * it under the terms of the GNU General Public License version 2 as
00007  * published by the Free Software Foundation.
00008  *
00009  * Alternatively, this software may be distributed under the terms of BSD
00010  * license.
00011  *
00012  * See README and COPYING for more details.
00013  *
00014  * IEEE 802.1X Supplicant test code (to be used in place of wpa_supplicant.c.
00015  * Not used in production version.
00016  */
00017 
00018 #include "includes.h"
00019 #include <assert.h>
00020 
00021 #include "common.h"
00022 #include "config.h"
00023 #include "eapol_supp/eapol_supp_sm.h"
00024 #include "eap_peer/eap.h"
00025 #include "eloop.h"
00026 #include "rsn_supp/wpa.h"
00027 #include "eap_peer/eap_i.h"
00028 #include "wpa_supplicant_i.h"
00029 #include "radius/radius.h"
00030 #include "radius/radius_client.h"
00031 #include "ctrl_iface.h"
00032 #include "pcsc_funcs.h"
00033 
00034 
00035 extern int wpa_debug_level;
00036 extern int wpa_debug_show_keys;
00037 
00038 struct wpa_driver_ops *wpa_drivers[] = { NULL };
00039 
00040 
00041 struct extra_radius_attr {
00042         u8 type;
00043         char syntax;
00044         char *data;
00045         struct extra_radius_attr *next;
00046 };
00047 
00048 struct eapol_test_data {
00049         struct wpa_supplicant *wpa_s;
00050 
00051         int eapol_test_num_reauths;
00052         int no_mppe_keys;
00053         int num_mppe_ok, num_mppe_mismatch;
00054 
00055         u8 radius_identifier;
00056         struct radius_msg *last_recv_radius;
00057         struct in_addr own_ip_addr;
00058         struct radius_client_data *radius;
00059         struct hostapd_radius_servers *radius_conf;
00060 
00061         u8 *last_eap_radius; /* last received EAP Response from Authentication
00062                               * Server */
00063         size_t last_eap_radius_len;
00064 
00065         u8 authenticator_pmk[PMK_LEN];
00066         size_t authenticator_pmk_len;
00067         int radius_access_accept_received;
00068         int radius_access_reject_received;
00069         int auth_timed_out;
00070 
00071         u8 *eap_identity;
00072         size_t eap_identity_len;
00073 
00074         char *connect_info;
00075         u8 own_addr[ETH_ALEN];
00076         struct extra_radius_attr *extra_attrs;
00077 };
00078 
00079 static struct eapol_test_data eapol_test;
00080 
00081 
00082 static void send_eap_request_identity(void *eloop_ctx, void *timeout_ctx);
00083 
00084 
00085 static void hostapd_logger_cb(void *ctx, const u8 *addr, unsigned int module,
00086                               int level, const char *txt, size_t len)
00087 {
00088         if (addr)
00089                 wpa_printf(MSG_DEBUG, "STA " MACSTR ": %s\n",
00090                            MAC2STR(addr), txt);
00091         else
00092                 wpa_printf(MSG_DEBUG, "%s", txt);
00093 }
00094 
00095 
00096 static int add_extra_attr(struct radius_msg *msg,
00097                           struct extra_radius_attr *attr)
00098 {
00099         size_t len;
00100         char *pos;
00101         u32 val;
00102         char buf[128];
00103 
00104         switch (attr->syntax) {
00105         case 's':
00106                 os_snprintf(buf, sizeof(buf), "%s", attr->data);
00107                 len = os_strlen(buf);
00108                 break;
00109         case 'n':
00110                 buf[0] = '\0';
00111                 len = 1;
00112                 break;
00113         case 'x':
00114                 pos = attr->data;
00115                 if (pos[0] == '0' && pos[1] == 'x')
00116                         pos += 2;
00117                 len = os_strlen(pos);
00118                 if ((len & 1) || (len / 2) > sizeof(buf)) {
00119                         printf("Invalid extra attribute hexstring\n");
00120                         return -1;
00121                 }
00122                 len /= 2;
00123                 if (hexstr2bin(pos, (u8 *) buf, len) < 0) {
00124                         printf("Invalid extra attribute hexstring\n");
00125                         return -1;
00126                 }
00127                 break;
00128         case 'd':
00129                 val = htonl(atoi(attr->data));
00130                 os_memcpy(buf, &val, 4);
00131                 len = 4;
00132                 break;
00133         default:
00134                 printf("Incorrect extra attribute syntax specification\n");
00135                 return -1;
00136         }
00137 
00138         if (!radius_msg_add_attr(msg, attr->type, (u8 *) buf, len)) {
00139                 printf("Could not add attribute %d\n", attr->type);
00140                 return -1;
00141         }
00142 
00143         return 0;
00144 }
00145 
00146 
00147 static int add_extra_attrs(struct radius_msg *msg,
00148                            struct extra_radius_attr *attrs)
00149 {
00150         struct extra_radius_attr *p;
00151         for (p = attrs; p; p = p->next) {
00152                 if (add_extra_attr(msg, p) < 0)
00153                         return -1;
00154         }
00155         return 0;
00156 }
00157 
00158 
00159 static struct extra_radius_attr *
00160 find_extra_attr(struct extra_radius_attr *attrs, u8 type)
00161 {
00162         struct extra_radius_attr *p;
00163         for (p = attrs; p; p = p->next) {
00164                 if (p->type == type)
00165                         return p;
00166         }
00167         return NULL;
00168 }
00169 
00170 
00171 static void ieee802_1x_encapsulate_radius(struct eapol_test_data *e,
00172                                           const u8 *eap, size_t len)
00173 {
00174         struct radius_msg *msg;
00175         char buf[128];
00176         const struct eap_hdr *hdr;
00177         const u8 *pos;
00178 
00179         wpa_printf(MSG_DEBUG, "Encapsulating EAP message into a RADIUS "
00180                    "packet");
00181 
00182         e->radius_identifier = radius_client_get_id(e->radius);
00183         msg = radius_msg_new(RADIUS_CODE_ACCESS_REQUEST,
00184                              e->radius_identifier);
00185         if (msg == NULL) {
00186                 printf("Could not create net RADIUS packet\n");
00187                 return;
00188         }
00189 
00190         radius_msg_make_authenticator(msg, (u8 *) e, sizeof(*e));
00191 
00192         hdr = (const struct eap_hdr *) eap;
00193         pos = (const u8 *) (hdr + 1);
00194         if (len > sizeof(*hdr) && hdr->code == EAP_CODE_RESPONSE &&
00195             pos[0] == EAP_TYPE_IDENTITY) {
00196                 pos++;
00197                 os_free(e->eap_identity);
00198                 e->eap_identity_len = len - sizeof(*hdr) - 1;
00199                 e->eap_identity = os_malloc(e->eap_identity_len);
00200                 if (e->eap_identity) {
00201                         os_memcpy(e->eap_identity, pos, e->eap_identity_len);
00202                         wpa_hexdump(MSG_DEBUG, "Learned identity from "
00203                                     "EAP-Response-Identity",
00204                                     e->eap_identity, e->eap_identity_len);
00205                 }
00206         }
00207 
00208         if (e->eap_identity &&
00209             !radius_msg_add_attr(msg, RADIUS_ATTR_USER_NAME,
00210                                  e->eap_identity, e->eap_identity_len)) {
00211                 printf("Could not add User-Name\n");
00212                 goto fail;
00213         }
00214 
00215         if (!find_extra_attr(e->extra_attrs, RADIUS_ATTR_NAS_IP_ADDRESS) &&
00216             !radius_msg_add_attr(msg, RADIUS_ATTR_NAS_IP_ADDRESS,
00217                                  (u8 *) &e->own_ip_addr, 4)) {
00218                 printf("Could not add NAS-IP-Address\n");
00219                 goto fail;
00220         }
00221 
00222         os_snprintf(buf, sizeof(buf), RADIUS_802_1X_ADDR_FORMAT,
00223                     MAC2STR(e->wpa_s->own_addr));
00224         if (!find_extra_attr(e->extra_attrs, RADIUS_ATTR_CALLING_STATION_ID)
00225             &&
00226             !radius_msg_add_attr(msg, RADIUS_ATTR_CALLING_STATION_ID,
00227                                  (u8 *) buf, os_strlen(buf))) {
00228                 printf("Could not add Calling-Station-Id\n");
00229                 goto fail;
00230         }
00231 
00232         /* TODO: should probably check MTU from driver config; 2304 is max for
00233          * IEEE 802.11, but use 1400 to avoid problems with too large packets
00234          */
00235         if (!find_extra_attr(e->extra_attrs, RADIUS_ATTR_FRAMED_MTU) &&
00236             !radius_msg_add_attr_int32(msg, RADIUS_ATTR_FRAMED_MTU, 1400)) {
00237                 printf("Could not add Framed-MTU\n");
00238                 goto fail;
00239         }
00240 
00241         if (!find_extra_attr(e->extra_attrs, RADIUS_ATTR_NAS_PORT_TYPE) &&
00242             !radius_msg_add_attr_int32(msg, RADIUS_ATTR_NAS_PORT_TYPE,
00243                                        RADIUS_NAS_PORT_TYPE_IEEE_802_11)) {
00244                 printf("Could not add NAS-Port-Type\n");
00245                 goto fail;
00246         }
00247 
00248         os_snprintf(buf, sizeof(buf), "%s", e->connect_info);
00249         if (!find_extra_attr(e->extra_attrs, RADIUS_ATTR_CONNECT_INFO) &&
00250             !radius_msg_add_attr(msg, RADIUS_ATTR_CONNECT_INFO,
00251                                  (u8 *) buf, os_strlen(buf))) {
00252                 printf("Could not add Connect-Info\n");
00253                 goto fail;
00254         }
00255 
00256         if (add_extra_attrs(msg, e->extra_attrs) < 0)
00257                 goto fail;
00258 
00259         if (eap && !radius_msg_add_eap(msg, eap, len)) {
00260                 printf("Could not add EAP-Message\n");
00261                 goto fail;
00262         }
00263 
00264         /* State attribute must be copied if and only if this packet is
00265          * Access-Request reply to the previous Access-Challenge */
00266         if (e->last_recv_radius &&
00267             radius_msg_get_hdr(e->last_recv_radius)->code ==
00268             RADIUS_CODE_ACCESS_CHALLENGE) {
00269                 int res = radius_msg_copy_attr(msg, e->last_recv_radius,
00270                                                RADIUS_ATTR_STATE);
00271                 if (res < 0) {
00272                         printf("Could not copy State attribute from previous "
00273                                "Access-Challenge\n");
00274                         goto fail;
00275                 }
00276                 if (res > 0) {
00277                         wpa_printf(MSG_DEBUG, "  Copied RADIUS State "
00278                                    "Attribute");
00279                 }
00280         }
00281 
00282         radius_client_send(e->radius, msg, RADIUS_AUTH, e->wpa_s->own_addr);
00283         return;
00284 
00285  fail:
00286         radius_msg_free(msg);
00287 }
00288 
00289 
00290 static int eapol_test_eapol_send(void *ctx, int type, const u8 *buf,
00291                                  size_t len)
00292 {
00293         /* struct wpa_supplicant *wpa_s = ctx; */
00294         printf("WPA: eapol_test_eapol_send(type=%d len=%lu)\n",
00295                type, (unsigned long) len);
00296         if (type == IEEE802_1X_TYPE_EAP_PACKET) {
00297                 wpa_hexdump(MSG_DEBUG, "TX EAP -> RADIUS", buf, len);
00298                 ieee802_1x_encapsulate_radius(&eapol_test, buf, len);
00299         }
00300         return 0;
00301 }
00302 
00303 
00304 static void eapol_test_set_config_blob(void *ctx,
00305                                        struct wpa_config_blob *blob)
00306 {
00307         struct wpa_supplicant *wpa_s = ctx;
00308         wpa_config_set_blob(wpa_s->conf, blob);
00309 }
00310 
00311 
00312 static const struct wpa_config_blob *
00313 eapol_test_get_config_blob(void *ctx, const char *name)
00314 {
00315         struct wpa_supplicant *wpa_s = ctx;
00316         return wpa_config_get_blob(wpa_s->conf, name);
00317 }
00318 
00319 
00320 static void eapol_test_eapol_done_cb(void *ctx)
00321 {
00322         printf("WPA: EAPOL processing complete\n");
00323 }
00324 
00325 
00326 static void eapol_sm_reauth(void *eloop_ctx, void *timeout_ctx)
00327 {
00328         struct eapol_test_data *e = eloop_ctx;
00329         printf("\n\n\n\n\neapol_test: Triggering EAP reauthentication\n\n");
00330         e->radius_access_accept_received = 0;
00331         send_eap_request_identity(e->wpa_s, NULL);
00332 }
00333 
00334 
00335 static int eapol_test_compare_pmk(struct eapol_test_data *e)
00336 {
00337         u8 pmk[PMK_LEN];
00338         int ret = 1;
00339 
00340         if (eapol_sm_get_key(e->wpa_s->eapol, pmk, PMK_LEN) == 0) {
00341                 wpa_hexdump(MSG_DEBUG, "PMK from EAPOL", pmk, PMK_LEN);
00342                 if (os_memcmp(pmk, e->authenticator_pmk, PMK_LEN) != 0) {
00343                         printf("WARNING: PMK mismatch\n");
00344                         wpa_hexdump(MSG_DEBUG, "PMK from AS",
00345                                     e->authenticator_pmk, PMK_LEN);
00346                 } else if (e->radius_access_accept_received)
00347                         ret = 0;
00348         } else if (e->authenticator_pmk_len == 16 &&
00349                    eapol_sm_get_key(e->wpa_s->eapol, pmk, 16) == 0) {
00350                 wpa_hexdump(MSG_DEBUG, "LEAP PMK from EAPOL", pmk, 16);
00351                 if (os_memcmp(pmk, e->authenticator_pmk, 16) != 0) {
00352                         printf("WARNING: PMK mismatch\n");
00353                         wpa_hexdump(MSG_DEBUG, "PMK from AS",
00354                                     e->authenticator_pmk, 16);
00355                 } else if (e->radius_access_accept_received)
00356                         ret = 0;
00357         } else if (e->radius_access_accept_received && e->no_mppe_keys) {
00358                 /* No keying material expected */
00359                 ret = 0;
00360         }
00361 
00362         if (ret && !e->no_mppe_keys)
00363                 e->num_mppe_mismatch++;
00364         else if (!e->no_mppe_keys)
00365                 e->num_mppe_ok++;
00366 
00367         return ret;
00368 }
00369 
00370 
00371 static void eapol_sm_cb(struct eapol_sm *eapol, int success, void *ctx)
00372 {
00373         struct eapol_test_data *e = ctx;
00374         printf("eapol_sm_cb: success=%d\n", success);
00375         e->eapol_test_num_reauths--;
00376         if (e->eapol_test_num_reauths < 0)
00377                 eloop_terminate();
00378         else {
00379                 eapol_test_compare_pmk(e);
00380                 eloop_register_timeout(0, 100000, eapol_sm_reauth, e, NULL);
00381         }
00382 }
00383 
00384 
00385 static int test_eapol(struct eapol_test_data *e, struct wpa_supplicant *wpa_s,
00386                       struct wpa_ssid *ssid)
00387 {
00388         struct eapol_config eapol_conf;
00389         struct eapol_ctx *ctx;
00390 
00391         ctx = os_zalloc(sizeof(*ctx));
00392         if (ctx == NULL) {
00393                 printf("Failed to allocate EAPOL context.\n");
00394                 return -1;
00395         }
00396         ctx->ctx = wpa_s;
00397         ctx->msg_ctx = wpa_s;
00398         ctx->scard_ctx = wpa_s->scard;
00399         ctx->cb = eapol_sm_cb;
00400         ctx->cb_ctx = e;
00401         ctx->eapol_send_ctx = wpa_s;
00402         ctx->preauth = 0;
00403         ctx->eapol_done_cb = eapol_test_eapol_done_cb;
00404         ctx->eapol_send = eapol_test_eapol_send;
00405         ctx->set_config_blob = eapol_test_set_config_blob;
00406         ctx->get_config_blob = eapol_test_get_config_blob;
00407         ctx->opensc_engine_path = wpa_s->conf->opensc_engine_path;
00408         ctx->pkcs11_engine_path = wpa_s->conf->pkcs11_engine_path;
00409         ctx->pkcs11_module_path = wpa_s->conf->pkcs11_module_path;
00410 
00411         wpa_s->eapol = eapol_sm_init(ctx);
00412         if (wpa_s->eapol == NULL) {
00413                 os_free(ctx);
00414                 printf("Failed to initialize EAPOL state machines.\n");
00415                 return -1;
00416         }
00417 
00418         wpa_s->current_ssid = ssid;
00419         os_memset(&eapol_conf, 0, sizeof(eapol_conf));
00420         eapol_conf.accept_802_1x_keys = 1;
00421         eapol_conf.required_keys = 0;
00422         eapol_conf.fast_reauth = wpa_s->conf->fast_reauth;
00423         eapol_conf.workaround = ssid->eap_workaround;
00424         eapol_sm_notify_config(wpa_s->eapol, &ssid->eap, &eapol_conf);
00425         eapol_sm_register_scard_ctx(wpa_s->eapol, wpa_s->scard);
00426 
00427 
00428         eapol_sm_notify_portValid(wpa_s->eapol, FALSE);
00429         /* 802.1X::portControl = Auto */
00430         eapol_sm_notify_portEnabled(wpa_s->eapol, TRUE);
00431 
00432         return 0;
00433 }
00434 
00435 
00436 static void test_eapol_clean(struct eapol_test_data *e,
00437                              struct wpa_supplicant *wpa_s)
00438 {
00439         struct extra_radius_attr *p, *prev;
00440 
00441         radius_client_deinit(e->radius);
00442         os_free(e->last_eap_radius);
00443         radius_msg_free(e->last_recv_radius);
00444         e->last_recv_radius = NULL;
00445         os_free(e->eap_identity);
00446         e->eap_identity = NULL;
00447         eapol_sm_deinit(wpa_s->eapol);
00448         wpa_s->eapol = NULL;
00449         if (e->radius_conf && e->radius_conf->auth_server) {
00450                 os_free(e->radius_conf->auth_server->shared_secret);
00451                 os_free(e->radius_conf->auth_server);
00452         }
00453         os_free(e->radius_conf);
00454         e->radius_conf = NULL;
00455         scard_deinit(wpa_s->scard);
00456         if (wpa_s->ctrl_iface) {
00457                 wpa_supplicant_ctrl_iface_deinit(wpa_s->ctrl_iface);
00458                 wpa_s->ctrl_iface = NULL;
00459         }
00460         wpa_config_free(wpa_s->conf);
00461 
00462         p = e->extra_attrs;
00463         while (p) {
00464                 prev = p;
00465                 p = p->next;
00466                 os_free(prev);
00467         }
00468 }
00469 
00470 
00471 static void send_eap_request_identity(void *eloop_ctx, void *timeout_ctx)
00472 {
00473         struct wpa_supplicant *wpa_s = eloop_ctx;
00474         u8 buf[100], *pos;
00475         struct ieee802_1x_hdr *hdr;
00476         struct eap_hdr *eap;
00477 
00478         hdr = (struct ieee802_1x_hdr *) buf;
00479         hdr->version = EAPOL_VERSION;
00480         hdr->type = IEEE802_1X_TYPE_EAP_PACKET;
00481         hdr->length = htons(5);
00482 
00483         eap = (struct eap_hdr *) (hdr + 1);
00484         eap->code = EAP_CODE_REQUEST;
00485         eap->identifier = 0;
00486         eap->length = htons(5);
00487         pos = (u8 *) (eap + 1);
00488         *pos = EAP_TYPE_IDENTITY;
00489 
00490         printf("Sending fake EAP-Request-Identity\n");
00491         eapol_sm_rx_eapol(wpa_s->eapol, wpa_s->bssid, buf,
00492                           sizeof(*hdr) + 5);
00493 }
00494 
00495 
00496 static void eapol_test_timeout(void *eloop_ctx, void *timeout_ctx)
00497 {
00498         struct eapol_test_data *e = eloop_ctx;
00499         printf("EAPOL test timed out\n");
00500         e->auth_timed_out = 1;
00501         eloop_terminate();
00502 }
00503 
00504 
00505 static char *eap_type_text(u8 type)
00506 {
00507         switch (type) {
00508         case EAP_TYPE_IDENTITY: return "Identity";
00509         case EAP_TYPE_NOTIFICATION: return "Notification";
00510         case EAP_TYPE_NAK: return "Nak";
00511         case EAP_TYPE_TLS: return "TLS";
00512         case EAP_TYPE_TTLS: return "TTLS";
00513         case EAP_TYPE_PEAP: return "PEAP";
00514         case EAP_TYPE_SIM: return "SIM";
00515         case EAP_TYPE_GTC: return "GTC";
00516         case EAP_TYPE_MD5: return "MD5";
00517         case EAP_TYPE_OTP: return "OTP";
00518         case EAP_TYPE_FAST: return "FAST";
00519         case EAP_TYPE_SAKE: return "SAKE";
00520         case EAP_TYPE_PSK: return "PSK";
00521         default: return "Unknown";
00522         }
00523 }
00524 
00525 
00526 static void ieee802_1x_decapsulate_radius(struct eapol_test_data *e)
00527 {
00528         u8 *eap;
00529         size_t len;
00530         struct eap_hdr *hdr;
00531         int eap_type = -1;
00532         char buf[64];
00533         struct radius_msg *msg;
00534 
00535         if (e->last_recv_radius == NULL)
00536                 return;
00537 
00538         msg = e->last_recv_radius;
00539 
00540         eap = radius_msg_get_eap(msg, &len);
00541         if (eap == NULL) {
00542                 /* draft-aboba-radius-rfc2869bis-20.txt, Chap. 2.6.3:
00543                  * RADIUS server SHOULD NOT send Access-Reject/no EAP-Message
00544                  * attribute */
00545                 wpa_printf(MSG_DEBUG, "could not extract "
00546                                "EAP-Message from RADIUS message");
00547                 os_free(e->last_eap_radius);
00548                 e->last_eap_radius = NULL;
00549                 e->last_eap_radius_len = 0;
00550                 return;
00551         }
00552 
00553         if (len < sizeof(*hdr)) {
00554                 wpa_printf(MSG_DEBUG, "too short EAP packet "
00555                                "received from authentication server");
00556                 os_free(eap);
00557                 return;
00558         }
00559 
00560         if (len > sizeof(*hdr))
00561                 eap_type = eap[sizeof(*hdr)];
00562 
00563         hdr = (struct eap_hdr *) eap;
00564         switch (hdr->code) {
00565         case EAP_CODE_REQUEST:
00566                 os_snprintf(buf, sizeof(buf), "EAP-Request-%s (%d)",
00567                             eap_type >= 0 ? eap_type_text(eap_type) : "??",
00568                             eap_type);
00569                 break;
00570         case EAP_CODE_RESPONSE:
00571                 os_snprintf(buf, sizeof(buf), "EAP Response-%s (%d)",
00572                             eap_type >= 0 ? eap_type_text(eap_type) : "??",
00573                             eap_type);
00574                 break;
00575         case EAP_CODE_SUCCESS:
00576                 os_strlcpy(buf, "EAP Success", sizeof(buf));
00577                 /* LEAP uses EAP Success within an authentication, so must not
00578                  * stop here with eloop_terminate(); */
00579                 break;
00580         case EAP_CODE_FAILURE:
00581                 os_strlcpy(buf, "EAP Failure", sizeof(buf));
00582                 eloop_terminate();
00583                 break;
00584         default:
00585                 os_strlcpy(buf, "unknown EAP code", sizeof(buf));
00586                 wpa_hexdump(MSG_DEBUG, "Decapsulated EAP packet", eap, len);
00587                 break;
00588         }
00589         wpa_printf(MSG_DEBUG, "decapsulated EAP packet (code=%d "
00590                        "id=%d len=%d) from RADIUS server: %s",
00591                       hdr->code, hdr->identifier, ntohs(hdr->length), buf);
00592 
00593         /* sta->eapol_sm->be_auth.idFromServer = hdr->identifier; */
00594 
00595         os_free(e->last_eap_radius);
00596         e->last_eap_radius = eap;
00597         e->last_eap_radius_len = len;
00598 
00599         {
00600                 struct ieee802_1x_hdr *dot1x;
00601                 dot1x = os_malloc(sizeof(*dot1x) + len);
00602                 assert(dot1x != NULL);
00603                 dot1x->version = EAPOL_VERSION;
00604                 dot1x->type = IEEE802_1X_TYPE_EAP_PACKET;
00605                 dot1x->length = htons(len);
00606                 os_memcpy((u8 *) (dot1x + 1), eap, len);
00607                 eapol_sm_rx_eapol(e->wpa_s->eapol, e->wpa_s->bssid,
00608                                   (u8 *) dot1x, sizeof(*dot1x) + len);
00609                 os_free(dot1x);
00610         }
00611 }
00612 
00613 
00614 static void ieee802_1x_get_keys(struct eapol_test_data *e,
00615                                 struct radius_msg *msg, struct radius_msg *req,
00616                                 const u8 *shared_secret,
00617                                 size_t shared_secret_len)
00618 {
00619         struct radius_ms_mppe_keys *keys;
00620 
00621         keys = radius_msg_get_ms_keys(msg, req, shared_secret,
00622                                       shared_secret_len);
00623         if (keys && keys->send == NULL && keys->recv == NULL) {
00624                 os_free(keys);
00625                 keys = radius_msg_get_cisco_keys(msg, req, shared_secret,
00626                                                  shared_secret_len);
00627         }
00628 
00629         if (keys) {
00630                 if (keys->send) {
00631                         wpa_hexdump(MSG_DEBUG, "MS-MPPE-Send-Key (sign)",
00632                                     keys->send, keys->send_len);
00633                 }
00634                 if (keys->recv) {
00635                         wpa_hexdump(MSG_DEBUG, "MS-MPPE-Recv-Key (crypt)",
00636                                     keys->recv, keys->recv_len);
00637                         e->authenticator_pmk_len =
00638                                 keys->recv_len > PMK_LEN ? PMK_LEN :
00639                                 keys->recv_len;
00640                         os_memcpy(e->authenticator_pmk, keys->recv,
00641                                   e->authenticator_pmk_len);
00642                         if (e->authenticator_pmk_len == 16 && keys->send &&
00643                             keys->send_len == 16) {
00644                                 /* MS-CHAP-v2 derives 16 octet keys */
00645                                 wpa_printf(MSG_DEBUG, "Use MS-MPPE-Send-Key "
00646                                            "to extend PMK to 32 octets");
00647                                 os_memcpy(e->authenticator_pmk +
00648                                           e->authenticator_pmk_len,
00649                                           keys->send, keys->send_len);
00650                                 e->authenticator_pmk_len += keys->send_len;
00651                         }
00652                 }
00653 
00654                 os_free(keys->send);
00655                 os_free(keys->recv);
00656                 os_free(keys);
00657         }
00658 }
00659 
00660 
00661 /* Process the RADIUS frames from Authentication Server */
00662 static RadiusRxResult
00663 ieee802_1x_receive_auth(struct radius_msg *msg, struct radius_msg *req,
00664                         const u8 *shared_secret, size_t shared_secret_len,
00665                         void *data)
00666 {
00667         struct eapol_test_data *e = data;
00668         struct radius_hdr *hdr = radius_msg_get_hdr(msg);
00669 
00670         /* RFC 2869, Ch. 5.13: valid Message-Authenticator attribute MUST be
00671          * present when packet contains an EAP-Message attribute */
00672         if (hdr->code == RADIUS_CODE_ACCESS_REJECT &&
00673             radius_msg_get_attr(msg, RADIUS_ATTR_MESSAGE_AUTHENTICATOR, NULL,
00674                                 0) < 0 &&
00675             radius_msg_get_attr(msg, RADIUS_ATTR_EAP_MESSAGE, NULL, 0) < 0) {
00676                 wpa_printf(MSG_DEBUG, "Allowing RADIUS "
00677                               "Access-Reject without Message-Authenticator "
00678                               "since it does not include EAP-Message\n");
00679         } else if (radius_msg_verify(msg, shared_secret, shared_secret_len,
00680                                      req, 1)) {
00681                 printf("Incoming RADIUS packet did not have correct "
00682                        "Message-Authenticator - dropped\n");
00683                 return RADIUS_RX_UNKNOWN;
00684         }
00685 
00686         if (hdr->code != RADIUS_CODE_ACCESS_ACCEPT &&
00687             hdr->code != RADIUS_CODE_ACCESS_REJECT &&
00688             hdr->code != RADIUS_CODE_ACCESS_CHALLENGE) {
00689                 printf("Unknown RADIUS message code\n");
00690                 return RADIUS_RX_UNKNOWN;
00691         }
00692 
00693         e->radius_identifier = -1;
00694         wpa_printf(MSG_DEBUG, "RADIUS packet matching with station");
00695 
00696         radius_msg_free(e->last_recv_radius);
00697         e->last_recv_radius = msg;
00698 
00699         switch (hdr->code) {
00700         case RADIUS_CODE_ACCESS_ACCEPT:
00701                 e->radius_access_accept_received = 1;
00702                 ieee802_1x_get_keys(e, msg, req, shared_secret,
00703                                     shared_secret_len);
00704                 break;
00705         case RADIUS_CODE_ACCESS_REJECT:
00706                 e->radius_access_reject_received = 1;
00707                 break;
00708         }
00709 
00710         ieee802_1x_decapsulate_radius(e);
00711 
00712         if ((hdr->code == RADIUS_CODE_ACCESS_ACCEPT &&
00713              e->eapol_test_num_reauths < 0) ||
00714             hdr->code == RADIUS_CODE_ACCESS_REJECT) {
00715                 eloop_terminate();
00716         }
00717 
00718         return RADIUS_RX_QUEUED;
00719 }
00720 
00721 
00722 static void wpa_init_conf(struct eapol_test_data *e,
00723                           struct wpa_supplicant *wpa_s, const char *authsrv,
00724                           int port, const char *secret,
00725                           const char *cli_addr)
00726 {
00727         struct hostapd_radius_server *as;
00728         int res;
00729 
00730         wpa_s->bssid[5] = 1;
00731         os_memcpy(wpa_s->own_addr, e->own_addr, ETH_ALEN);
00732         e->own_ip_addr.s_addr = htonl((127 << 24) | 1);
00733         os_strlcpy(wpa_s->ifname, "test", sizeof(wpa_s->ifname));
00734 
00735         e->radius_conf = os_zalloc(sizeof(struct hostapd_radius_servers));
00736         assert(e->radius_conf != NULL);
00737         e->radius_conf->num_auth_servers = 1;
00738         as = os_zalloc(sizeof(struct hostapd_radius_server));
00739         assert(as != NULL);
00740 #if defined(CONFIG_NATIVE_WINDOWS) || defined(CONFIG_ANSI_C_EXTRA)
00741         {
00742                 int a[4];
00743                 u8 *pos;
00744                 sscanf(authsrv, "%d.%d.%d.%d", &a[0], &a[1], &a[2], &a[3]);
00745                 pos = (u8 *) &as->addr.u.v4;
00746                 *pos++ = a[0];
00747                 *pos++ = a[1];
00748                 *pos++ = a[2];
00749                 *pos++ = a[3];
00750         }
00751 #else /* CONFIG_NATIVE_WINDOWS or CONFIG_ANSI_C_EXTRA */
00752         inet_aton(authsrv, &as->addr.u.v4);
00753 #endif /* CONFIG_NATIVE_WINDOWS or CONFIG_ANSI_C_EXTRA */
00754         as->addr.af = AF_INET;
00755         as->port = port;
00756         as->shared_secret = (u8 *) os_strdup(secret);
00757         as->shared_secret_len = os_strlen(secret);
00758         e->radius_conf->auth_server = as;
00759         e->radius_conf->auth_servers = as;
00760         e->radius_conf->msg_dumps = 1;
00761         if (cli_addr) {
00762                 if (hostapd_parse_ip_addr(cli_addr,
00763                                           &e->radius_conf->client_addr) == 0)
00764                         e->radius_conf->force_client_addr = 1;
00765                 else {
00766                         wpa_printf(MSG_ERROR, "Invalid IP address '%s'",
00767                                    cli_addr);
00768                         assert(0);
00769                 }
00770         }
00771 
00772         e->radius = radius_client_init(wpa_s, e->radius_conf);
00773         assert(e->radius != NULL);
00774 
00775         res = radius_client_register(e->radius, RADIUS_AUTH,
00776                                      ieee802_1x_receive_auth, e);
00777         assert(res == 0);
00778 }
00779 
00780 
00781 static int scard_test(void)
00782 {
00783         struct scard_data *scard;
00784         size_t len;
00785         char imsi[20];
00786         unsigned char _rand[16];
00787 #ifdef PCSC_FUNCS
00788         unsigned char sres[4];
00789         unsigned char kc[8];
00790 #endif /* PCSC_FUNCS */
00791 #define num_triplets 5
00792         unsigned char rand_[num_triplets][16];
00793         unsigned char sres_[num_triplets][4];
00794         unsigned char kc_[num_triplets][8];
00795         int i, res;
00796         size_t j;
00797 
00798 #define AKA_RAND_LEN 16
00799 #define AKA_AUTN_LEN 16
00800 #define AKA_AUTS_LEN 14
00801 #define RES_MAX_LEN 16
00802 #define IK_LEN 16
00803 #define CK_LEN 16
00804         unsigned char aka_rand[AKA_RAND_LEN];
00805         unsigned char aka_autn[AKA_AUTN_LEN];
00806         unsigned char aka_auts[AKA_AUTS_LEN];
00807         unsigned char aka_res[RES_MAX_LEN];
00808         size_t aka_res_len;
00809         unsigned char aka_ik[IK_LEN];
00810         unsigned char aka_ck[CK_LEN];
00811 
00812         scard = scard_init(SCARD_TRY_BOTH);
00813         if (scard == NULL)
00814                 return -1;
00815         if (scard_set_pin(scard, "1234")) {
00816                 wpa_printf(MSG_WARNING, "PIN validation failed");
00817                 scard_deinit(scard);
00818                 return -1;
00819         }
00820 
00821         len = sizeof(imsi);
00822         if (scard_get_imsi(scard, imsi, &len))
00823                 goto failed;
00824         wpa_hexdump_ascii(MSG_DEBUG, "SCARD: IMSI", (u8 *) imsi, len);
00825         /* NOTE: Permanent Username: 1 | IMSI */
00826 
00827         os_memset(_rand, 0, sizeof(_rand));
00828         if (scard_gsm_auth(scard, _rand, sres, kc))
00829                 goto failed;
00830 
00831         os_memset(_rand, 0xff, sizeof(_rand));
00832         if (scard_gsm_auth(scard, _rand, sres, kc))
00833                 goto failed;
00834 
00835         for (i = 0; i < num_triplets; i++) {
00836                 os_memset(rand_[i], i, sizeof(rand_[i]));
00837                 if (scard_gsm_auth(scard, rand_[i], sres_[i], kc_[i]))
00838                         goto failed;
00839         }
00840 
00841         for (i = 0; i < num_triplets; i++) {
00842                 printf("1");
00843                 for (j = 0; j < len; j++)
00844                         printf("%c", imsi[j]);
00845                 printf(",");
00846                 for (j = 0; j < 16; j++)
00847                         printf("%02X", rand_[i][j]);
00848                 printf(",");
00849                 for (j = 0; j < 4; j++)
00850                         printf("%02X", sres_[i][j]);
00851                 printf(",");
00852                 for (j = 0; j < 8; j++)
00853                         printf("%02X", kc_[i][j]);
00854                 printf("\n");
00855         }
00856 
00857         wpa_printf(MSG_DEBUG, "Trying to use UMTS authentication");
00858 
00859         /* seq 39 (0x28) */
00860         os_memset(aka_rand, 0xaa, 16);
00861         os_memcpy(aka_autn, "\x86\x71\x31\xcb\xa2\xfc\x61\xdf"
00862                   "\xa3\xb3\x97\x9d\x07\x32\xa2\x12", 16);
00863 
00864         res = scard_umts_auth(scard, aka_rand, aka_autn, aka_res, &aka_res_len,
00865                               aka_ik, aka_ck, aka_auts);
00866         if (res == 0) {
00867                 wpa_printf(MSG_DEBUG, "UMTS auth completed successfully");
00868                 wpa_hexdump(MSG_DEBUG, "RES", aka_res, aka_res_len);
00869                 wpa_hexdump(MSG_DEBUG, "IK", aka_ik, IK_LEN);
00870                 wpa_hexdump(MSG_DEBUG, "CK", aka_ck, CK_LEN);
00871         } else if (res == -2) {
00872                 wpa_printf(MSG_DEBUG, "UMTS auth resulted in synchronization "
00873                            "failure");
00874                 wpa_hexdump(MSG_DEBUG, "AUTS", aka_auts, AKA_AUTS_LEN);
00875         } else {
00876                 wpa_printf(MSG_DEBUG, "UMTS auth failed");
00877         }
00878 
00879 failed:
00880         scard_deinit(scard);
00881 
00882         return 0;
00883 #undef num_triplets
00884 }
00885 
00886 
00887 static int scard_get_triplets(int argc, char *argv[])
00888 {
00889         struct scard_data *scard;
00890         size_t len;
00891         char imsi[20];
00892         unsigned char _rand[16];
00893         unsigned char sres[4];
00894         unsigned char kc[8];
00895         int num_triplets;
00896         int i;
00897         size_t j;
00898 
00899         if (argc < 2 || ((num_triplets = atoi(argv[1])) <= 0)) {
00900                 printf("invalid parameters for sim command\n");
00901                 return -1;
00902         }
00903 
00904         if (argc <= 2 || os_strcmp(argv[2], "debug") != 0) {
00905                 /* disable debug output */
00906                 wpa_debug_level = 99;
00907         }
00908 
00909         scard = scard_init(SCARD_GSM_SIM_ONLY);
00910         if (scard == NULL) {
00911                 printf("Failed to open smartcard connection\n");
00912                 return -1;
00913         }
00914         if (scard_set_pin(scard, argv[0])) {
00915                 wpa_printf(MSG_WARNING, "PIN validation failed");
00916                 scard_deinit(scard);
00917                 return -1;
00918         }
00919 
00920         len = sizeof(imsi);
00921         if (scard_get_imsi(scard, imsi, &len)) {
00922                 scard_deinit(scard);
00923                 return -1;
00924         }
00925 
00926         for (i = 0; i < num_triplets; i++) {
00927                 os_memset(_rand, i, sizeof(_rand));
00928                 if (scard_gsm_auth(scard, _rand, sres, kc))
00929                         break;
00930 
00931                 /* IMSI:Kc:SRES:RAND */
00932                 for (j = 0; j < len; j++)
00933                         printf("%c", imsi[j]);
00934                 printf(":");
00935                 for (j = 0; j < 8; j++)
00936                         printf("%02X", kc[j]);
00937                 printf(":");
00938                 for (j = 0; j < 4; j++)
00939                         printf("%02X", sres[j]);
00940                 printf(":");
00941                 for (j = 0; j < 16; j++)
00942                         printf("%02X", _rand[j]);
00943                 printf("\n");
00944         }
00945 
00946         scard_deinit(scard);
00947 
00948         return 0;
00949 }
00950 
00951 
00952 static void eapol_test_terminate(int sig, void *signal_ctx)
00953 {
00954         struct wpa_supplicant *wpa_s = signal_ctx;
00955         wpa_msg(wpa_s, MSG_INFO, "Signal %d received - terminating", sig);
00956         eloop_terminate();
00957 }
00958 
00959 
00960 static void usage(void)
00961 {
00962         printf("usage:\n"
00963                "eapol_test [-nWS] -c<conf> [-a<AS IP>] [-p<AS port>] "
00964                "[-s<AS secret>]\\\n"
00965                "           [-r<count>] [-t<timeout>] [-C<Connect-Info>] \\\n"
00966                "           [-M<client MAC address>] \\\n"
00967                "           [-N<attr spec>] \\\n"
00968                "           [-A<client IP>]\n"
00969                "eapol_test scard\n"
00970                "eapol_test sim <PIN> <num triplets> [debug]\n"
00971                "\n");
00972         printf("options:\n"
00973                "  -c<conf> = configuration file\n"
00974                "  -a<AS IP> = IP address of the authentication server, "
00975                "default 127.0.0.1\n"
00976                "  -p<AS port> = UDP port of the authentication server, "
00977                "default 1812\n"
00978                "  -s<AS secret> = shared secret with the authentication "
00979                "server, default 'radius'\n"
00980                "  -A<client IP> = IP address of the client, default: select "
00981                "automatically\n"
00982                "  -r<count> = number of re-authentications\n"
00983                "  -W = wait for a control interface monitor before starting\n"
00984                "  -S = save configuration after authentication\n"
00985                "  -n = no MPPE keys expected\n"
00986                "  -t<timeout> = sets timeout in seconds (default: 30 s)\n"
00987                "  -C<Connect-Info> = RADIUS Connect-Info (default: "
00988                "CONNECT 11Mbps 802.11b)\n"
00989                "  -M<client MAC address> = Set own MAC address "
00990                "(Calling-Station-Id,\n"
00991                "                           default: 02:00:00:00:00:01)\n"
00992                "  -N<attr spec> = send arbitrary attribute specified by:\n"
00993                "                  attr_id:syntax:value or attr_id\n"
00994                "                  attr_id - number id of the attribute\n"
00995                "                  syntax - one of: s, d, x\n"
00996                "                     s = string\n"
00997                "                     d = integer\n"
00998                "                     x = octet string\n"
00999                "                  value - attribute value.\n"
01000                "       When only attr_id is specified, NULL will be used as "
01001                "value.\n"
01002                "       Multiple attributes can be specified by using the "
01003                "option several times.\n");
01004 }
01005 
01006 
01007 int main(int argc, char *argv[])
01008 {
01009         struct wpa_supplicant wpa_s;
01010         int c, ret = 1, wait_for_monitor = 0, save_config = 0;
01011         char *as_addr = "127.0.0.1";
01012         int as_port = 1812;
01013         char *as_secret = "radius";
01014         char *cli_addr = NULL;
01015         char *conf = NULL;
01016         int timeout = 30;
01017         char *pos;
01018         struct extra_radius_attr *p = NULL, *p1;
01019 
01020         if (os_program_init())
01021                 return -1;
01022 
01023         hostapd_logger_register_cb(hostapd_logger_cb);
01024 
01025         os_memset(&eapol_test, 0, sizeof(eapol_test));
01026         eapol_test.connect_info = "CONNECT 11Mbps 802.11b";
01027         os_memcpy(eapol_test.own_addr, "\x02\x00\x00\x00\x00\x01", ETH_ALEN);
01028 
01029         wpa_debug_level = 0;
01030         wpa_debug_show_keys = 1;
01031 
01032         for (;;) {
01033                 c = getopt(argc, argv, "a:A:c:C:M:nN:p:r:s:St:W");
01034                 if (c < 0)
01035                         break;
01036                 switch (c) {
01037                 case 'a':
01038                         as_addr = optarg;
01039                         break;
01040                 case 'A':
01041                         cli_addr = optarg;
01042                         break;
01043                 case 'c':
01044                         conf = optarg;
01045                         break;
01046                 case 'C':
01047                         eapol_test.connect_info = optarg;
01048                         break;
01049                 case 'M':
01050                         if (hwaddr_aton(optarg, eapol_test.own_addr)) {
01051                                 usage();
01052                                 return -1;
01053                         }
01054                         break;
01055                 case 'n':
01056                         eapol_test.no_mppe_keys++;
01057                         break;
01058                 case 'p':
01059                         as_port = atoi(optarg);
01060                         break;
01061                 case 'r':
01062                         eapol_test.eapol_test_num_reauths = atoi(optarg);
01063                         break;
01064                 case 's':
01065                         as_secret = optarg;
01066                         break;
01067                 case 'S':
01068                         save_config++;
01069                         break;
01070                 case 't':
01071                         timeout = atoi(optarg);
01072                         break;
01073                 case 'W':
01074                         wait_for_monitor++;
01075                         break;
01076                 case 'N':
01077                         p1 = os_zalloc(sizeof(p1));
01078                         if (p1 == NULL)
01079                                 break;
01080                         if (!p)
01081                                 eapol_test.extra_attrs = p1;
01082                         else
01083                                 p->next = p1;
01084                         p = p1;
01085 
01086                         p->type = atoi(optarg);
01087                         pos = os_strchr(optarg, ':');
01088                         if (pos == NULL) {
01089                                 p->syntax = 'n';
01090                                 p->data = NULL;
01091                                 break;
01092                         }
01093 
01094                         pos++;
01095                         if (pos[0] == '\0' || pos[1] != ':') {
01096                                 printf("Incorrect format of attribute "
01097                                        "specification\n");
01098                                 break;
01099                         }
01100 
01101                         p->syntax = pos[0];
01102                         p->data = pos + 2;
01103                         break;
01104                 default:
01105                         usage();
01106                         return -1;
01107                 }
01108         }
01109 
01110         if (argc > optind && os_strcmp(argv[optind], "scard") == 0) {
01111                 return scard_test();
01112         }
01113 
01114         if (argc > optind && os_strcmp(argv[optind], "sim") == 0) {
01115                 return scard_get_triplets(argc - optind - 1,
01116                                           &argv[optind + 1]);
01117         }
01118 
01119         if (conf == NULL) {
01120                 usage();
01121                 printf("Configuration file is required.\n");
01122                 return -1;
01123         }
01124 
01125         if (eap_register_methods()) {
01126                 wpa_printf(MSG_ERROR, "Failed to register EAP methods");
01127                 return -1;
01128         }
01129 
01130         if (eloop_init()) {
01131                 wpa_printf(MSG_ERROR, "Failed to initialize event loop");
01132                 return -1;
01133         }
01134 
01135         os_memset(&wpa_s, 0, sizeof(wpa_s));
01136         eapol_test.wpa_s = &wpa_s;
01137         wpa_s.conf = wpa_config_read(conf);
01138         if (wpa_s.conf == NULL) {
01139                 printf("Failed to parse configuration file '%s'.\n", conf);
01140                 return -1;
01141         }
01142         if (wpa_s.conf->ssid == NULL) {
01143                 printf("No networks defined.\n");
01144                 return -1;
01145         }
01146 
01147         wpa_init_conf(&eapol_test, &wpa_s, as_addr, as_port, as_secret,
01148                       cli_addr);
01149         wpa_s.ctrl_iface = wpa_supplicant_ctrl_iface_init(&wpa_s);
01150         if (wpa_s.ctrl_iface == NULL) {
01151                 printf("Failed to initialize control interface '%s'.\n"
01152                        "You may have another eapol_test process already "
01153                        "running or the file was\n"
01154                        "left by an unclean termination of eapol_test in "
01155                        "which case you will need\n"
01156                        "to manually remove this file before starting "
01157                        "eapol_test again.\n",
01158                        wpa_s.conf->ctrl_interface);
01159                 return -1;
01160         }
01161         if (wpa_supplicant_scard_init(&wpa_s, wpa_s.conf->ssid))
01162                 return -1;
01163 
01164         if (test_eapol(&eapol_test, &wpa_s, wpa_s.conf->ssid))
01165                 return -1;
01166 
01167         if (wait_for_monitor)
01168                 wpa_supplicant_ctrl_iface_wait(wpa_s.ctrl_iface);
01169 
01170         eloop_register_timeout(timeout, 0, eapol_test_timeout, &eapol_test,
01171                                NULL);
01172         eloop_register_timeout(0, 0, send_eap_request_identity, &wpa_s, NULL);
01173         eloop_register_signal_terminate(eapol_test_terminate, &wpa_s);
01174         eloop_register_signal_reconfig(eapol_test_terminate, &wpa_s);
01175         eloop_run();
01176 
01177         eloop_cancel_timeout(eapol_test_timeout, &eapol_test, NULL);
01178         eloop_cancel_timeout(eapol_sm_reauth, &eapol_test, NULL);
01179 
01180         if (eapol_test_compare_pmk(&eapol_test) == 0 ||
01181             eapol_test.no_mppe_keys)
01182                 ret = 0;
01183         if (eapol_test.auth_timed_out)
01184                 ret = -2;
01185         if (eapol_test.radius_access_reject_received)
01186                 ret = -3;
01187 
01188         if (save_config)
01189                 wpa_config_write(conf, wpa_s.conf);
01190 
01191         test_eapol_clean(&eapol_test, &wpa_s);
01192 
01193         eap_peer_unregister_methods();
01194 
01195         eloop_destroy();
01196 
01197         printf("MPPE keys OK: %d  mismatch: %d\n",
01198                eapol_test.num_mppe_ok, eapol_test.num_mppe_mismatch);
01199         if (eapol_test.num_mppe_mismatch)
01200                 ret = -4;
01201         if (ret)
01202                 printf("FAILURE\n");
01203         else
01204                 printf("SUCCESS\n");
01205 
01206         os_program_deinit();
01207 
01208         return ret;
01209 }


wpa_supplicant
Author(s): Package maintained by Blaise Gassend
autogenerated on Thu Apr 24 2014 15:34:35