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 software may be distributed under the terms of the BSD license.
   6  * See README for more details.
   7  *
   8  * IEEE 802.1X Supplicant test code (to be used in place of wpa_supplicant.c.
   9  * Not used in production version.
  10  */
  11
  12 #include "includes.h"
  13 #include <assert.h>
  14
  15 #include "common.h"
  16 #include "config.h"
  17 #include "eapol_supp/eapol_supp_sm.h"
  18 #include "eloop.h"
  19 #include "rsn_supp/wpa.h"
  20 #include "eap_peer/eap.h"
  21 #include "wpa_supplicant_i.h"
  22 #include "l2_packet/l2_packet.h"
  23 #include "ctrl_iface.h"
  24 #include "pcsc_funcs.h"
  25 #include "rsn_supp/preauth.h"
  26 #include "rsn_supp/pmksa_cache.h"
  27 #include "drivers/driver.h"
  28
  29
  30 extern int wpa_debug_level;
  31 extern int wpa_debug_show_keys;
  32
  33 struct wpa_driver_ops *wpa_drivers[] = { NULL };
  34
  35
  36 struct preauth_test_data {
  37         int auth_timed_out;
  38 };
  39
  40
  41 static void _wpa_supplicant_disassociate(void *wpa_s, int reason_code)
  42 {
  43         wpa_supplicant_disassociate(wpa_s, reason_code);
  44 }
  45
  46
  47 static void _wpa_supplicant_deauthenticate(void *wpa_s, int reason_code)
  48 {
  49         wpa_supplicant_deauthenticate(wpa_s, reason_code);
  50 }
  51
  52
  53 static u8 * wpa_alloc_eapol(const struct wpa_supplicant *wpa_s, u8 type,
  54                             const void *data, u16 data_len,
  55                             size_t *msg_len, void **data_pos)
  56 {
  57         struct ieee802_1x_hdr *hdr;
  58
  59         *msg_len = sizeof(*hdr) + data_len;
  60         hdr = os_malloc(*msg_len);
  61         if (hdr == NULL)
  62                 return NULL;
  63
  64         hdr->version = wpa_s->conf->eapol_version;
  65         hdr->type = type;
  66         hdr->length = htons(data_len);
  67
  68         if (data)
  69                 os_memcpy(hdr + 1, data, data_len);
  70         else
  71                 os_memset(hdr + 1, 0, data_len);
  72
  73         if (data_pos)
  74                 *data_pos = hdr + 1;
  75
  76         return (u8 *) hdr;
  77 }
  78
  79
  80 static u8 * _wpa_alloc_eapol(void *wpa_s, u8 type,
  81                              const void *data, u16 data_len,
  82                              size_t *msg_len, void **data_pos)
  83 {
  84         return wpa_alloc_eapol(wpa_s, type, data, data_len, msg_len, data_pos);
  85 }
  86
  87
  88 static void _wpa_supplicant_set_state(void *ctx, enum wpa_states state)
  89 {
  90         struct wpa_supplicant *wpa_s = ctx;
  91         wpa_s->wpa_state = state;
  92 }
  93
  94
  95 static enum wpa_states _wpa_supplicant_get_state(void *ctx)
  96 {
  97         struct wpa_supplicant *wpa_s = ctx;
  98         return wpa_s->wpa_state;
  99 }
 100
 101
 102 static int wpa_ether_send(void *wpa_s, const u8 *dest, u16 proto,
 103                           const u8 *buf, size_t len)
 104 {
 105         printf("%s - not implemented\n", __func__);
 106         return -1;
 107 }
 108
 109
 110 static void * wpa_supplicant_get_network_ctx(void *wpa_s)
 111 {
 112         return wpa_supplicant_get_ssid(wpa_s);
 113 }
 114
 115
 116 static void _wpa_supplicant_cancel_auth_timeout(void *wpa_s)
 117 {
 118         wpa_supplicant_cancel_auth_timeout(wpa_s);
 119 }
 120
 121
 122 static int wpa_supplicant_get_beacon_ie(void *wpa_s)
 123 {
 124         printf("%s - not implemented\n", __func__);
 125         return -1;
 126 }
 127
 128
 129 static int wpa_supplicant_get_bssid(void *wpa_s, u8 *bssid)
 130 {
 131         printf("%s - not implemented\n", __func__);
 132         return -1;
 133 }
 134
 135
 136 static int wpa_supplicant_set_key(void *wpa_s, enum wpa_alg alg,
 137                                   const u8 *addr, int key_idx, int set_tx,
 138                                   const u8 *seq, size_t seq_len,
 139                                   const u8 *key, size_t key_len)
 140 {
 141         printf("%s - not implemented\n", __func__);
 142         return -1;
 143 }
 144
 145
 146 static int wpa_supplicant_mlme_setprotection(void *wpa_s, const u8 *addr,
 147                                              int protection_type,
 148                                              int key_type)
 149 {
 150         printf("%s - not implemented\n", __func__);
 151         return -1;
 152 }
 153
 154
 155 static int wpa_supplicant_add_pmkid(void *wpa_s,
 156                                     const u8 *bssid, const u8 *pmkid)
 157 {
 158         printf("%s - not implemented\n", __func__);
 159         return -1;
 160 }
 161
 162
 163 static int wpa_supplicant_remove_pmkid(void *wpa_s,
 164                                        const u8 *bssid, const u8 *pmkid)
 165 {
 166         printf("%s - not implemented\n", __func__);
 167         return -1;
 168 }
 169
 170
 171 static void wpa_supplicant_set_config_blob(void *ctx,
 172                                            struct wpa_config_blob *blob)
 173 {
 174         struct wpa_supplicant *wpa_s = ctx;
 175         wpa_config_set_blob(wpa_s->conf, blob);
 176 }
 177
 178
 179 static const struct wpa_config_blob *
 180 wpa_supplicant_get_config_blob(void *ctx, const char *name)
 181 {
 182         struct wpa_supplicant *wpa_s = ctx;
 183         return wpa_config_get_blob(wpa_s->conf, name);
 184 }
 185
 186
 187 static void test_eapol_clean(struct wpa_supplicant *wpa_s)
 188 {
 189         rsn_preauth_deinit(wpa_s->wpa);
 190         pmksa_candidate_free(wpa_s->wpa);
 191         wpa_sm_deinit(wpa_s->wpa);
 192         scard_deinit(wpa_s->scard);
 193         if (wpa_s->ctrl_iface) {
 194                 wpa_supplicant_ctrl_iface_deinit(wpa_s->ctrl_iface);
 195                 wpa_s->ctrl_iface = NULL;
 196         }
 197         wpa_config_free(wpa_s->conf);
 198 }
 199
 200
 201 static void eapol_test_timeout(void *eloop_ctx, void *timeout_ctx)
 202 {
 203         struct preauth_test_data *p = eloop_ctx;
 204         printf("EAPOL test timed out\n");
 205         p->auth_timed_out = 1;
 206         eloop_terminate();
 207 }
 208
 209
 210 static void eapol_test_poll(void *eloop_ctx, void *timeout_ctx)
 211 {
 212         struct wpa_supplicant *wpa_s = eloop_ctx;
 213         if (!rsn_preauth_in_progress(wpa_s->wpa))
 214                 eloop_terminate();
 215         else {
 216                 eloop_register_timeout(0, 100000, eapol_test_poll, eloop_ctx,
 217                                        timeout_ctx);
 218         }
 219 }
 220
 221
 222 static struct wpa_driver_ops dummy_driver;
 223
 224
 225 static void wpa_init_conf(struct wpa_supplicant *wpa_s, const char *ifname)
 226 {
 227         struct l2_packet_data *l2;
 228         struct wpa_sm_ctx *ctx;
 229
 230         os_memset(&dummy_driver, 0, sizeof(dummy_driver));
 231         wpa_s->driver = &dummy_driver;
 232
 233         ctx = os_zalloc(sizeof(*ctx));
 234         assert(ctx != NULL);
 235
 236         ctx->ctx = wpa_s;
 237         ctx->msg_ctx = wpa_s;
 238         ctx->set_state = _wpa_supplicant_set_state;
 239         ctx->get_state = _wpa_supplicant_get_state;
 240         ctx->deauthenticate = _wpa_supplicant_deauthenticate;
 241         ctx->disassociate = _wpa_supplicant_disassociate;
 242         ctx->set_key = wpa_supplicant_set_key;
 243         ctx->get_network_ctx = wpa_supplicant_get_network_ctx;
 244         ctx->get_bssid = wpa_supplicant_get_bssid;
 245         ctx->ether_send = wpa_ether_send;
 246         ctx->get_beacon_ie = wpa_supplicant_get_beacon_ie;
 247         ctx->alloc_eapol = _wpa_alloc_eapol;
 248         ctx->cancel_auth_timeout = _wpa_supplicant_cancel_auth_timeout;
 249         ctx->add_pmkid = wpa_supplicant_add_pmkid;
 250         ctx->remove_pmkid = wpa_supplicant_remove_pmkid;
 251         ctx->set_config_blob = wpa_supplicant_set_config_blob;
 252         ctx->get_config_blob = wpa_supplicant_get_config_blob;
 253         ctx->mlme_setprotection = wpa_supplicant_mlme_setprotection;
 254
 255         wpa_s->wpa = wpa_sm_init(ctx);
 256         assert(wpa_s->wpa != NULL);
 257         wpa_sm_set_param(wpa_s->wpa, WPA_PARAM_PROTO, WPA_PROTO_RSN);
 258
 259         os_strlcpy(wpa_s->ifname, ifname, sizeof(wpa_s->ifname));
 260         wpa_sm_set_ifname(wpa_s->wpa, wpa_s->ifname, NULL);
 261
 262         l2 = l2_packet_init(wpa_s->ifname, NULL, ETH_P_RSN_PREAUTH, NULL,
 263                             NULL, 0);
 264         assert(l2 != NULL);
 265         if (l2_packet_get_own_addr(l2, wpa_s->own_addr)) {
 266                 wpa_printf(MSG_WARNING, "Failed to get own L2 address\n");
 267                 exit(-1);
 268         }
 269         l2_packet_deinit(l2);
 270         wpa_sm_set_own_addr(wpa_s->wpa, wpa_s->own_addr);
 271 }
 272
 273
 274 static void eapol_test_terminate(int sig, void *signal_ctx)
 275 {
 276         struct wpa_supplicant *wpa_s = signal_ctx;
 277         wpa_msg(wpa_s, MSG_INFO, "Signal %d received - terminating", sig);
 278         eloop_terminate();
 279 }
 280
 281
 282 int main(int argc, char *argv[])
 283 {
 284         struct wpa_supplicant wpa_s;
 285         int ret = 1;
 286         u8 bssid[ETH_ALEN];
 287         struct preauth_test_data preauth_test;
 288
 289         if (os_program_init())
 290                 return -1;
 291
 292         os_memset(&preauth_test, 0, sizeof(preauth_test));
 293
 294         wpa_debug_level = 0;
 295         wpa_debug_show_keys = 1;
 296
 297         if (argc != 4) {
 298                 printf("usage: preauth_test <conf> <target MAC address> "
 299                        "<ifname>\n");
 300                 return -1;
 301         }
 302
 303         if (hwaddr_aton(argv[2], bssid)) {
 304                 printf("Failed to parse target address '%s'.\n", argv[2]);
 305                 return -1;
 306         }
 307
 308         if (eap_register_methods()) {
 309                 wpa_printf(MSG_ERROR, "Failed to register EAP methods");
 310                 return -1;
 311         }
 312
 313         if (eloop_init()) {
 314                 wpa_printf(MSG_ERROR, "Failed to initialize event loop");
 315                 return -1;
 316         }
 317
 318         os_memset(&wpa_s, 0, sizeof(wpa_s));
 319         wpa_s.conf = wpa_config_read(argv[1]);
 320         if (wpa_s.conf == NULL) {
 321                 printf("Failed to parse configuration file '%s'.\n", argv[1]);
 322                 return -1;
 323         }
 324         if (wpa_s.conf->ssid == NULL) {
 325                 printf("No networks defined.\n");
 326                 return -1;
 327         }
 328
 329         wpa_init_conf(&wpa_s, argv[3]);
 330         wpa_s.ctrl_iface = wpa_supplicant_ctrl_iface_init(&wpa_s);
 331         if (wpa_s.ctrl_iface == NULL) {
 332                 printf("Failed to initialize control interface '%s'.\n"
 333                        "You may have another preauth_test process already "
 334                        "running or the file was\n"
 335                        "left by an unclean termination of preauth_test in "
 336                        "which case you will need\n"
 337                        "to manually remove this file before starting "
 338                        "preauth_test again.\n",
 339                        wpa_s.conf->ctrl_interface);
 340                 return -1;
 341         }
 342         if (wpa_supplicant_scard_init(&wpa_s, wpa_s.conf->ssid))
 343                 return -1;
 344
 345         if (rsn_preauth_init(wpa_s.wpa, bssid, &wpa_s.conf->ssid->eap))
 346                 return -1;
 347
 348         eloop_register_timeout(30, 0, eapol_test_timeout, &preauth_test, NULL);
 349         eloop_register_timeout(0, 100000, eapol_test_poll, &wpa_s, NULL);
 350         eloop_register_signal_terminate(eapol_test_terminate, &wpa_s);
 351         eloop_register_signal_reconfig(eapol_test_terminate, &wpa_s);
 352         eloop_run();
 353
 354         if (preauth_test.auth_timed_out)
 355                 ret = -2;
 356         else {
 357                 ret = pmksa_cache_set_current(wpa_s.wpa, NULL, bssid, NULL, 0)
 358                         ? 0 : -3;
 359         }
 360
 361         test_eapol_clean(&wpa_s);
 362
 363         eap_peer_unregister_methods();
 364
 365         eloop_destroy();
 366
 367         os_program_deinit();
 368
 369         return ret;
 370 }