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 "rsn_supp/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 "rsn_supp/preauth.h"
  32 #include "rsn_supp/pmksa_cache.h"
  33 #include "drivers/driver.h"
  34
  35
  36 extern int wpa_debug_level;
  37 extern int wpa_debug_show_keys;
  38
  39 struct wpa_driver_ops *wpa_drivers[] = { NULL };
  40
  41
  42 struct preauth_test_data {
  43         int auth_timed_out;
  44 };
  45
  46
  47 static void _wpa_supplicant_disassociate(void *wpa_s, int reason_code)
  48 {
  49         wpa_supplicant_disassociate(wpa_s, reason_code);
  50 }
  51
  52
  53 static void _wpa_supplicant_deauthenticate(void *wpa_s, int reason_code)
  54 {
  55         wpa_supplicant_deauthenticate(wpa_s, reason_code);
  56 }
  57
  58
  59 static u8 * wpa_alloc_eapol(const struct wpa_supplicant *wpa_s, u8 type,
  60                             const void *data, u16 data_len,
  61                             size_t *msg_len, void **data_pos)
  62 {
  63         struct ieee802_1x_hdr *hdr;
  64
  65         *msg_len = sizeof(*hdr) + data_len;
  66         hdr = os_malloc(*msg_len);
  67         if (hdr == NULL)
  68                 return NULL;
  69
  70         hdr->version = wpa_s->conf->eapol_version;
  71         hdr->type = type;
  72         hdr->length = htons(data_len);
  73
  74         if (data)
  75                 os_memcpy(hdr + 1, data, data_len);
  76         else
  77                 os_memset(hdr + 1, 0, data_len);
  78
  79         if (data_pos)
  80                 *data_pos = hdr + 1;
  81
  82         return (u8 *) hdr;
  83 }
  84
  85
  86 static u8 * _wpa_alloc_eapol(void *wpa_s, u8 type,
  87                              const void *data, u16 data_len,
  88                              size_t *msg_len, void **data_pos)
  89 {
  90         return wpa_alloc_eapol(wpa_s, type, data, data_len, msg_len, data_pos);
  91 }
  92
  93
  94 static void _wpa_supplicant_set_state(void *ctx, enum wpa_states state)
  95 {
  96         struct wpa_supplicant *wpa_s = ctx;
  97         wpa_s->wpa_state = state;
  98 }
  99
 100
 101 static enum wpa_states _wpa_supplicant_get_state(void *ctx)
 102 {
 103         struct wpa_supplicant *wpa_s = ctx;
 104         return wpa_s->wpa_state;
 105 }
 106
 107
 108 static int wpa_ether_send(void *wpa_s, const u8 *dest, u16 proto,
 109                           const u8 *buf, size_t len)
 110 {
 111         printf("%s - not implemented\n", __func__);
 112         return -1;
 113 }
 114
 115
 116 static void * wpa_supplicant_get_network_ctx(void *wpa_s)
 117 {
 118         return wpa_supplicant_get_ssid(wpa_s);
 119 }
 120
 121
 122 static void _wpa_supplicant_cancel_auth_timeout(void *wpa_s)
 123 {
 124         wpa_supplicant_cancel_auth_timeout(wpa_s);
 125 }
 126
 127
 128 static int wpa_supplicant_get_beacon_ie(void *wpa_s)
 129 {
 130         printf("%s - not implemented\n", __func__);
 131         return -1;
 132 }
 133
 134
 135 static int wpa_supplicant_get_bssid(void *wpa_s, u8 *bssid)
 136 {
 137         printf("%s - not implemented\n", __func__);
 138         return -1;
 139 }
 140
 141
 142 static int wpa_supplicant_set_key(void *wpa_s, enum wpa_alg alg,
 143                                   const u8 *addr, int key_idx, int set_tx,
 144                                   const u8 *seq, size_t seq_len,
 145                                   const u8 *key, size_t key_len)
 146 {
 147         printf("%s - not implemented\n", __func__);
 148         return -1;
 149 }
 150
 151
 152 static int wpa_supplicant_mlme_setprotection(void *wpa_s, const u8 *addr,
 153                                              int protection_type,
 154                                              int key_type)
 155 {
 156         printf("%s - not implemented\n", __func__);
 157         return -1;
 158 }
 159
 160
 161 static int wpa_supplicant_add_pmkid(void *wpa_s,
 162                                     const u8 *bssid, const u8 *pmkid)
 163 {
 164         printf("%s - not implemented\n", __func__);
 165         return -1;
 166 }
 167
 168
 169 static int wpa_supplicant_remove_pmkid(void *wpa_s,
 170                                        const u8 *bssid, const u8 *pmkid)
 171 {
 172         printf("%s - not implemented\n", __func__);
 173         return -1;
 174 }
 175
 176
 177 static void wpa_supplicant_set_config_blob(void *ctx,
 178                                            struct wpa_config_blob *blob)
 179 {
 180         struct wpa_supplicant *wpa_s = ctx;
 181         wpa_config_set_blob(wpa_s->conf, blob);
 182 }
 183
 184
 185 static const struct wpa_config_blob *
 186 wpa_supplicant_get_config_blob(void *ctx, const char *name)
 187 {
 188         struct wpa_supplicant *wpa_s = ctx;
 189         return wpa_config_get_blob(wpa_s->conf, name);
 190 }
 191
 192
 193 static void test_eapol_clean(struct wpa_supplicant *wpa_s)
 194 {
 195         rsn_preauth_deinit(wpa_s->wpa);
 196         pmksa_candidate_free(wpa_s->wpa);
 197         wpa_sm_deinit(wpa_s->wpa);
 198         scard_deinit(wpa_s->scard);
 199         if (wpa_s->ctrl_iface) {
 200                 wpa_supplicant_ctrl_iface_deinit(wpa_s->ctrl_iface);
 201                 wpa_s->ctrl_iface = NULL;
 202         }
 203         wpa_config_free(wpa_s->conf);
 204 }
 205
 206
 207 static void eapol_test_timeout(void *eloop_ctx, void *timeout_ctx)
 208 {
 209         struct preauth_test_data *p = eloop_ctx;
 210         printf("EAPOL test timed out\n");
 211         p->auth_timed_out = 1;
 212         eloop_terminate();
 213 }
 214
 215
 216 static void eapol_test_poll(void *eloop_ctx, void *timeout_ctx)
 217 {
 218         struct wpa_supplicant *wpa_s = eloop_ctx;
 219         if (!rsn_preauth_in_progress(wpa_s->wpa))
 220                 eloop_terminate();
 221         else {
 222                 eloop_register_timeout(0, 100000, eapol_test_poll, eloop_ctx,
 223                                        timeout_ctx);
 224         }
 225 }
 226
 227
 228 static struct wpa_driver_ops dummy_driver;
 229
 230
 231 static void wpa_init_conf(struct wpa_supplicant *wpa_s, const char *ifname)
 232 {
 233         struct l2_packet_data *l2;
 234         struct wpa_sm_ctx *ctx;
 235
 236         os_memset(&dummy_driver, 0, sizeof(dummy_driver));
 237         wpa_s->driver = &dummy_driver;
 238
 239         ctx = os_zalloc(sizeof(*ctx));
 240         assert(ctx != NULL);
 241
 242         ctx->ctx = wpa_s;
 243         ctx->msg_ctx = wpa_s;
 244         ctx->set_state = _wpa_supplicant_set_state;
 245         ctx->get_state = _wpa_supplicant_get_state;
 246         ctx->deauthenticate = _wpa_supplicant_deauthenticate;
 247         ctx->disassociate = _wpa_supplicant_disassociate;
 248         ctx->set_key = wpa_supplicant_set_key;
 249         ctx->get_network_ctx = wpa_supplicant_get_network_ctx;
 250         ctx->get_bssid = wpa_supplicant_get_bssid;
 251         ctx->ether_send = wpa_ether_send;
 252         ctx->get_beacon_ie = wpa_supplicant_get_beacon_ie;
 253         ctx->alloc_eapol = _wpa_alloc_eapol;
 254         ctx->cancel_auth_timeout = _wpa_supplicant_cancel_auth_timeout;
 255         ctx->add_pmkid = wpa_supplicant_add_pmkid;
 256         ctx->remove_pmkid = wpa_supplicant_remove_pmkid;
 257         ctx->set_config_blob = wpa_supplicant_set_config_blob;
 258         ctx->get_config_blob = wpa_supplicant_get_config_blob;
 259         ctx->mlme_setprotection = wpa_supplicant_mlme_setprotection;
 260
 261         wpa_s->wpa = wpa_sm_init(ctx);
 262         assert(wpa_s->wpa != NULL);
 263         wpa_sm_set_param(wpa_s->wpa, WPA_PARAM_PROTO, WPA_PROTO_RSN);
 264
 265         os_strlcpy(wpa_s->ifname, ifname, sizeof(wpa_s->ifname));
 266         wpa_sm_set_ifname(wpa_s->wpa, wpa_s->ifname, NULL);
 267
 268         l2 = l2_packet_init(wpa_s->ifname, NULL, ETH_P_RSN_PREAUTH, NULL,
 269                             NULL, 0);
 270         assert(l2 != NULL);
 271         if (l2_packet_get_own_addr(l2, wpa_s->own_addr)) {
 272                 wpa_printf(MSG_WARNING, "Failed to get own L2 address\n");
 273                 exit(-1);
 274         }
 275         l2_packet_deinit(l2);
 276         wpa_sm_set_own_addr(wpa_s->wpa, wpa_s->own_addr);
 277 }
 278
 279
 280 static void eapol_test_terminate(int sig, void *signal_ctx)
 281 {
 282         struct wpa_supplicant *wpa_s = signal_ctx;
 283         wpa_msg(wpa_s, MSG_INFO, "Signal %d received - terminating", sig);
 284         eloop_terminate();
 285 }
 286
 287
 288 int main(int argc, char *argv[])
 289 {
 290         struct wpa_supplicant wpa_s;
 291         int ret = 1;
 292         u8 bssid[ETH_ALEN];
 293         struct preauth_test_data preauth_test;
 294
 295         if (os_program_init())
 296                 return -1;
 297
 298         os_memset(&preauth_test, 0, sizeof(preauth_test));
 299
 300         wpa_debug_level = 0;
 301         wpa_debug_show_keys = 1;
 302
 303         if (argc != 4) {
 304                 printf("usage: preauth_test <conf> <target MAC address> "
 305                        "<ifname>\n");
 306                 return -1;
 307         }
 308
 309         if (hwaddr_aton(argv[2], bssid)) {
 310                 printf("Failed to parse target address '%s'.\n", argv[2]);
 311                 return -1;
 312         }
 313
 314         if (eap_register_methods()) {
 315                 wpa_printf(MSG_ERROR, "Failed to register EAP methods");
 316                 return -1;
 317         }
 318
 319         if (eloop_init()) {
 320                 wpa_printf(MSG_ERROR, "Failed to initialize event loop");
 321                 return -1;
 322         }
 323
 324         os_memset(&wpa_s, 0, sizeof(wpa_s));
 325         wpa_s.conf = wpa_config_read(argv[1]);
 326         if (wpa_s.conf == NULL) {
 327                 printf("Failed to parse configuration file '%s'.\n", argv[1]);
 328                 return -1;
 329         }
 330         if (wpa_s.conf->ssid == NULL) {
 331                 printf("No networks defined.\n");
 332                 return -1;
 333         }
 334
 335         wpa_init_conf(&wpa_s, argv[3]);
 336         wpa_s.ctrl_iface = wpa_supplicant_ctrl_iface_init(&wpa_s);
 337         if (wpa_s.ctrl_iface == NULL) {
 338                 printf("Failed to initialize control interface '%s'.\n"
 339                        "You may have another preauth_test process already "
 340                        "running or the file was\n"
 341                        "left by an unclean termination of preauth_test in "
 342                        "which case you will need\n"
 343                        "to manually remove this file before starting "
 344                        "preauth_test again.\n",
 345                        wpa_s.conf->ctrl_interface);
 346                 return -1;
 347         }
 348         if (wpa_supplicant_scard_init(&wpa_s, wpa_s.conf->ssid))
 349                 return -1;
 350
 351         if (rsn_preauth_init(wpa_s.wpa, bssid, &wpa_s.conf->ssid->eap))
 352                 return -1;
 353
 354         eloop_register_timeout(30, 0, eapol_test_timeout, &preauth_test, NULL);
 355         eloop_register_timeout(0, 100000, eapol_test_poll, &wpa_s, NULL);
 356         eloop_register_signal_terminate(eapol_test_terminate, &wpa_s);
 357         eloop_register_signal_reconfig(eapol_test_terminate, &wpa_s);
 358         eloop_run();
 359
 360         if (preauth_test.auth_timed_out)
 361                 ret = -2;
 362         else {
 363                 ret = pmksa_cache_set_current(wpa_s.wpa, NULL, bssid, NULL, 0)
 364                         ? 0 : -3;
 365         }
 366
 367         test_eapol_clean(&wpa_s);
 368
 369         eap_peer_unregister_methods();
 370
 371         eloop_destroy();
 372
 373         os_program_deinit();
 374
 375         return ret;
 376 }