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