dist/wpa/wpa_supplicant/preauth_test.c

   1 /*
   2  * WPA Supplicant - test code for pre-authentication
   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 "eloop.h"
  25 #include "wpa.h"
  26 #include "eap_peer/eap.h"
  27 #include "wpa_supplicant_i.h"
  28 #include "l2_packet/l2_packet.h"
  29 #include "ctrl_iface.h"
  30 #include "pcsc_funcs.h"
  31 #include "preauth.h"
  32 #include "pmksa_cache.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 preauth_test_data {
  42         int auth_timed_out;
  43 };
  44
  45
  46 static void _wpa_supplicant_disassociate(void *wpa_s, int reason_code)
  47 {
  48         wpa_supplicant_disassociate(wpa_s, reason_code);
  49 }
  50
  51
  52 static void _wpa_supplicant_deauthenticate(void *wpa_s, int reason_code)
  53 {
  54         wpa_supplicant_deauthenticate(wpa_s, reason_code);
  55 }
  56
  57
  58 static u8 * wpa_alloc_eapol(const struct wpa_supplicant *wpa_s, u8 type,
  59                             const void *data, u16 data_len,
  60                             size_t *msg_len, void **data_pos)
  61 {
  62         struct ieee802_1x_hdr *hdr;
  63
  64         *msg_len = sizeof(*hdr) + data_len;
  65         hdr = os_malloc(*msg_len);
  66         if (hdr == NULL)
  67                 return NULL;
  68
  69         hdr->version = wpa_s->conf->eapol_version;
  70         hdr->type = type;
  71         hdr->length = htons(data_len);
  72
  73         if (data)
  74                 os_memcpy(hdr + 1, data, data_len);
  75         else
  76                 os_memset(hdr + 1, 0, data_len);
  77
  78         if (data_pos)
  79                 *data_pos = hdr + 1;
  80
  81         return (u8 *) hdr;
  82 }
  83
  84
  85 static u8 * _wpa_alloc_eapol(void *wpa_s, u8 type,
  86                              const void *data, u16 data_len,
  87                              size_t *msg_len, void **data_pos)
  88 {
  89         return wpa_alloc_eapol(wpa_s, type, data, data_len, msg_len, data_pos);
  90 }
  91
  92
  93 static void _wpa_supplicant_set_state(void *ctx, wpa_states state)
  94 {
  95         struct wpa_supplicant *wpa_s = ctx;
  96         wpa_s->wpa_state = state;
  97 }
  98
  99
 100 static wpa_states _wpa_supplicant_get_state(void *ctx)
 101 {
 102         struct wpa_supplicant *wpa_s = ctx;
 103         return wpa_s->wpa_state;
 104 }
 105
 106
 107 static int wpa_ether_send(void *wpa_s, const u8 *dest, u16 proto,
 108                           const u8 *buf, size_t len)
 109 {
 110         printf("%s - not implemented\n", __func__);
 111         return -1;
 112 }
 113
 114
 115 static void * wpa_supplicant_get_network_ctx(void *wpa_s)
 116 {
 117         return wpa_supplicant_get_ssid(wpa_s);
 118 }
 119
 120
 121 static void _wpa_supplicant_cancel_auth_timeout(void *wpa_s)
 122 {
 123         wpa_supplicant_cancel_auth_timeout(wpa_s);
 124 }
 125
 126
 127 static int wpa_supplicant_get_beacon_ie(void *wpa_s)
 128 {
 129         printf("%s - not implemented\n", __func__);
 130         return -1;
 131 }
 132
 133
 134 static int wpa_supplicant_get_bssid(void *wpa_s, u8 *bssid)
 135 {
 136         printf("%s - not implemented\n", __func__);
 137         return -1;
 138 }
 139
 140
 141 static int wpa_supplicant_set_key(void *wpa_s, wpa_alg alg,
 142                                   const u8 *addr, int key_idx, int set_tx,
 143                                   const u8 *seq, size_t seq_len,
 144                                   const u8 *key, size_t key_len)
 145 {
 146         printf("%s - not implemented\n", __func__);
 147         return -1;
 148 }
 149
 150
 151 static int wpa_supplicant_mlme_setprotection(void *wpa_s, const u8 *addr,
 152                                              int protection_type,
 153                                              int key_type)
 154 {
 155         printf("%s - not implemented\n", __func__);
 156         return -1;
 157 }
 158
 159
 160 static int wpa_supplicant_add_pmkid(void *wpa_s,
 161                                     const u8 *bssid, const u8 *pmkid)
 162 {
 163         printf("%s - not implemented\n", __func__);
 164         return -1;
 165 }
 166
 167
 168 static int wpa_supplicant_remove_pmkid(void *wpa_s,
 169                                        const u8 *bssid, const u8 *pmkid)
 170 {
 171         printf("%s - not implemented\n", __func__);
 172         return -1;
 173 }
 174
 175
 176 static void wpa_supplicant_set_config_blob(void *ctx,
 177                                            struct wpa_config_blob *blob)
 178 {
 179         struct wpa_supplicant *wpa_s = ctx;
 180         wpa_config_set_blob(wpa_s->conf, blob);
 181 }
 182
 183
 184 static const struct wpa_config_blob *
 185 wpa_supplicant_get_config_blob(void *ctx, const char *name)
 186 {
 187         struct wpa_supplicant *wpa_s = ctx;
 188         return wpa_config_get_blob(wpa_s->conf, name);
 189 }
 190
 191
 192 static void test_eapol_clean(struct wpa_supplicant *wpa_s)
 193 {
 194         rsn_preauth_deinit(wpa_s->wpa);
 195         pmksa_candidate_free(wpa_s->wpa);
 196         wpa_sm_deinit(wpa_s->wpa);
 197         scard_deinit(wpa_s->scard);
 198         if (wpa_s->ctrl_iface) {
 199                 wpa_supplicant_ctrl_iface_deinit(wpa_s->ctrl_iface);
 200                 wpa_s->ctrl_iface = NULL;
 201         }
 202         wpa_config_free(wpa_s->conf);
 203 }
 204
 205
 206 static void eapol_test_timeout(void *eloop_ctx, void *timeout_ctx)
 207 {
 208         struct preauth_test_data *p = eloop_ctx;
 209         printf("EAPOL test timed out\n");
 210         p->auth_timed_out = 1;
 211         eloop_terminate();
 212 }
 213
 214
 215 static void eapol_test_poll(void *eloop_ctx, void *timeout_ctx)
 216 {
 217         struct wpa_supplicant *wpa_s = eloop_ctx;
 218         if (!rsn_preauth_in_progress(wpa_s->wpa))
 219                 eloop_terminate();
 220         else {
 221                 eloop_register_timeout(0, 100000, eapol_test_poll, eloop_ctx,
 222                                        timeout_ctx);
 223         }
 224 }
 225
 226
 227 static struct wpa_driver_ops dummy_driver;
 228
 229
 230 static void wpa_init_conf(struct wpa_supplicant *wpa_s, const char *ifname)
 231 {
 232         struct l2_packet_data *l2;
 233         struct wpa_sm_ctx *ctx;
 234
 235         os_memset(&dummy_driver, 0, sizeof(dummy_driver));
 236         wpa_s->driver = &dummy_driver;
 237
 238         ctx = os_zalloc(sizeof(*ctx));
 239         assert(ctx != NULL);
 240
 241         ctx->ctx = wpa_s;
 242         ctx->set_state = _wpa_supplicant_set_state;
 243         ctx->get_state = _wpa_supplicant_get_state;
 244         ctx->deauthenticate = _wpa_supplicant_deauthenticate;
 245         ctx->disassociate = _wpa_supplicant_disassociate;
 246         ctx->set_key = wpa_supplicant_set_key;
 247         ctx->get_network_ctx = wpa_supplicant_get_network_ctx;
 248         ctx->get_bssid = wpa_supplicant_get_bssid;
 249         ctx->ether_send = wpa_ether_send;
 250         ctx->get_beacon_ie = wpa_supplicant_get_beacon_ie;
 251         ctx->alloc_eapol = _wpa_alloc_eapol;
 252         ctx->cancel_auth_timeout = _wpa_supplicant_cancel_auth_timeout;
 253         ctx->add_pmkid = wpa_supplicant_add_pmkid;
 254         ctx->remove_pmkid = wpa_supplicant_remove_pmkid;
 255         ctx->set_config_blob = wpa_supplicant_set_config_blob;
 256         ctx->get_config_blob = wpa_supplicant_get_config_blob;
 257         ctx->mlme_setprotection = wpa_supplicant_mlme_setprotection;
 258
 259         wpa_s->wpa = wpa_sm_init(ctx);
 260         assert(wpa_s->wpa != NULL);
 261         wpa_sm_set_param(wpa_s->wpa, WPA_PARAM_PROTO, WPA_PROTO_RSN);
 262
 263         os_strlcpy(wpa_s->ifname, ifname, sizeof(wpa_s->ifname));
 264         wpa_sm_set_ifname(wpa_s->wpa, wpa_s->ifname, NULL);
 265
 266         l2 = l2_packet_init(wpa_s->ifname, NULL, ETH_P_RSN_PREAUTH, NULL,
 267                             NULL, 0);
 268         assert(l2 != NULL);
 269         if (l2_packet_get_own_addr(l2, wpa_s->own_addr)) {
 270                 wpa_printf(MSG_WARNING, "Failed to get own L2 address\n");
 271                 exit(-1);
 272         }
 273         l2_packet_deinit(l2);
 274         wpa_sm_set_own_addr(wpa_s->wpa, wpa_s->own_addr);
 275 }
 276
 277
 278 static void eapol_test_terminate(int sig, void *eloop_ctx,
 279                                  void *signal_ctx)
 280 {
 281         struct wpa_supplicant *wpa_s = eloop_ctx;
 282         wpa_msg(wpa_s, MSG_INFO, "Signal %d received - terminating", sig);
 283         eloop_terminate();
 284 }
 285
 286
 287 int main(int argc, char *argv[])
 288 {
 289         struct wpa_supplicant wpa_s;
 290         int ret = 1;
 291         u8 bssid[ETH_ALEN];
 292         struct preauth_test_data preauth_test;
 293
 294         if (os_program_init())
 295                 return -1;
 296
 297         os_memset(&preauth_test, 0, sizeof(preauth_test));
 298
 299         wpa_debug_level = 0;
 300         wpa_debug_show_keys = 1;
 301
 302         if (argc != 4) {
 303                 printf("usage: preauth_test <conf> <target MAC address> "
 304                        "<ifname>\n");
 305                 return -1;
 306         }
 307
 308         if (hwaddr_aton(argv[2], bssid)) {
 309                 printf("Failed to parse target address '%s'.\n", argv[2]);
 310                 return -1;
 311         }
 312
 313         if (eap_peer_register_methods()) {
 314                 wpa_printf(MSG_ERROR, "Failed to register EAP methods");
 315                 return -1;
 316         }
 317
 318         if (eloop_init(&wpa_s)) {
 319                 wpa_printf(MSG_ERROR, "Failed to initialize event loop");
 320                 return -1;
 321         }
 322
 323         os_memset(&wpa_s, 0, sizeof(wpa_s));
 324         wpa_s.conf = wpa_config_read(argv[1]);
 325         if (wpa_s.conf == NULL) {
 326                 printf("Failed to parse configuration file '%s'.\n", argv[1]);
 327                 return -1;
 328         }
 329         if (wpa_s.conf->ssid == NULL) {
 330                 printf("No networks defined.\n");
 331                 return -1;
 332         }
 333
 334         wpa_init_conf(&wpa_s, argv[3]);
 335         wpa_s.ctrl_iface = wpa_supplicant_ctrl_iface_init(&wpa_s);
 336         if (wpa_s.ctrl_iface == NULL) {
 337                 printf("Failed to initialize control interface '%s'.\n"
 338                        "You may have another preauth_test process already "
 339                        "running or the file was\n"
 340                        "left by an unclean termination of preauth_test in "
 341                        "which case you will need\n"
 342                        "to manually remove this file before starting "
 343                        "preauth_test again.\n",
 344                        wpa_s.conf->ctrl_interface);
 345                 return -1;
 346         }
 347         if (wpa_supplicant_scard_init(&wpa_s, wpa_s.conf->ssid))
 348                 return -1;
 349
 350         if (rsn_preauth_init(wpa_s.wpa, bssid, &wpa_s.conf->ssid->eap))
 351                 return -1;
 352
 353         eloop_register_timeout(30, 0, eapol_test_timeout, &preauth_test, NULL);
 354         eloop_register_timeout(0, 100000, eapol_test_poll, &wpa_s, NULL);
 355         eloop_register_signal_terminate(eapol_test_terminate, NULL);
 356         eloop_register_signal_reconfig(eapol_test_terminate, NULL);
 357         eloop_run();
 358
 359         if (preauth_test.auth_timed_out)
 360                 ret = -2;
 361         else {
 362                 ret = pmksa_cache_set_current(wpa_s.wpa, NULL, bssid, NULL, 0)
 363                         ? 0 : -3;
 364         }
 365
 366         test_eapol_clean(&wpa_s);
 367
 368         eap_peer_unregister_methods();
 369
 370         eloop_destroy();
 371
 372         os_program_deinit();
 373
 374         return ret;
 375 }