00001
00002
00003
00004
00005
00006
00007
00008
00009
00010
00011
00012
00013
00014
00015 #include "includes.h"
00016
00017 #include "common.h"
00018 #include "eloop.h"
00019 #include "common/ieee802_11_defs.h"
00020 #include "../config.h"
00021 #include "rsn_supp/wpa.h"
00022 #include "rsn_supp/wpa_ie.h"
00023 #include "../hostapd/wpa.h"
00024
00025
00026 extern int wpa_debug_level;
00027 extern int wpa_debug_show_keys;
00028
00029
00030 struct wpa {
00031 u8 auth_addr[ETH_ALEN];
00032 u8 supp_addr[ETH_ALEN];
00033 u8 psk[PMK_LEN];
00034
00035
00036 u8 auth_eapol_dst[ETH_ALEN];
00037 u8 *auth_eapol;
00038 size_t auth_eapol_len;
00039
00040
00041 u8 *supp_eapol;
00042 size_t supp_eapol_len;
00043
00044 struct wpa_sm *supp;
00045 struct wpa_authenticator *auth_group;
00046 struct wpa_state_machine *auth;
00047
00048 struct wpa_ssid ssid;
00049 u8 supp_ie[80];
00050 size_t supp_ie_len;
00051 };
00052
00053
00054 static int supp_get_bssid(void *ctx, u8 *bssid)
00055 {
00056 struct wpa *wpa = ctx;
00057 wpa_printf(MSG_DEBUG, "SUPP: %s", __func__);
00058 os_memcpy(bssid, wpa->auth_addr, ETH_ALEN);
00059 return 0;
00060 }
00061
00062
00063 static void supp_set_state(void *ctx, enum wpa_states state)
00064 {
00065 wpa_printf(MSG_DEBUG, "SUPP: %s(state=%d)", __func__, state);
00066 }
00067
00068
00069 static void auth_eapol_rx(void *eloop_data, void *user_ctx)
00070 {
00071 struct wpa *wpa = eloop_data;
00072
00073 wpa_printf(MSG_DEBUG, "AUTH: RX EAPOL frame");
00074 wpa_receive(wpa->auth_group, wpa->auth, wpa->supp_eapol,
00075 wpa->supp_eapol_len);
00076 }
00077
00078
00079 static int supp_ether_send(void *ctx, const u8 *dest, u16 proto, const u8 *buf,
00080 size_t len)
00081 {
00082 struct wpa *wpa = ctx;
00083
00084 wpa_printf(MSG_DEBUG, "SUPP: %s(dest=" MACSTR " proto=0x%04x "
00085 "len=%lu)",
00086 __func__, MAC2STR(dest), proto, (unsigned long) len);
00087
00088 os_free(wpa->supp_eapol);
00089 wpa->supp_eapol = os_malloc(len);
00090 if (wpa->supp_eapol == NULL)
00091 return -1;
00092 os_memcpy(wpa->supp_eapol, buf, len);
00093 wpa->supp_eapol_len = len;
00094 eloop_register_timeout(0, 0, auth_eapol_rx, wpa, NULL);
00095
00096 return 0;
00097 }
00098
00099
00100 static u8 * supp_alloc_eapol(void *ctx, u8 type, const void *data,
00101 u16 data_len, size_t *msg_len, void **data_pos)
00102 {
00103 struct ieee802_1x_hdr *hdr;
00104
00105 wpa_printf(MSG_DEBUG, "SUPP: %s(type=%d data_len=%d)",
00106 __func__, type, data_len);
00107
00108 *msg_len = sizeof(*hdr) + data_len;
00109 hdr = os_malloc(*msg_len);
00110 if (hdr == NULL)
00111 return NULL;
00112
00113 hdr->version = 2;
00114 hdr->type = type;
00115 hdr->length = host_to_be16(data_len);
00116
00117 if (data)
00118 os_memcpy(hdr + 1, data, data_len);
00119 else
00120 os_memset(hdr + 1, 0, data_len);
00121
00122 if (data_pos)
00123 *data_pos = hdr + 1;
00124
00125 return (u8 *) hdr;
00126 }
00127
00128
00129 static int supp_get_beacon_ie(void *ctx)
00130 {
00131 struct wpa *wpa = ctx;
00132 const u8 *ie;
00133 size_t ielen;
00134
00135 wpa_printf(MSG_DEBUG, "SUPP: %s", __func__);
00136
00137 ie = wpa_auth_get_wpa_ie(wpa->auth_group, &ielen);
00138 if (ie == NULL || ielen < 1)
00139 return -1;
00140 if (ie[0] == WLAN_EID_RSN)
00141 return wpa_sm_set_ap_rsn_ie(wpa->supp, ie, 2 + ie[1]);
00142 return wpa_sm_set_ap_wpa_ie(wpa->supp, ie, 2 + ie[1]);
00143 }
00144
00145
00146 static int supp_set_key(void *ctx, enum wpa_alg alg,
00147 const u8 *addr, int key_idx, int set_tx,
00148 const u8 *seq, size_t seq_len,
00149 const u8 *key, size_t key_len)
00150 {
00151 wpa_printf(MSG_DEBUG, "SUPP: %s(alg=%d addr=" MACSTR " key_idx=%d "
00152 "set_tx=%d)",
00153 __func__, alg, MAC2STR(addr), key_idx, set_tx);
00154 wpa_hexdump(MSG_DEBUG, "SUPP: set_key - seq", seq, seq_len);
00155 wpa_hexdump(MSG_DEBUG, "SUPP: set_key - key", key, key_len);
00156 return 0;
00157 }
00158
00159
00160 static int supp_mlme_setprotection(void *ctx, const u8 *addr,
00161 int protection_type, int key_type)
00162 {
00163 wpa_printf(MSG_DEBUG, "SUPP: %s(addr=" MACSTR " protection_type=%d "
00164 "key_type=%d)",
00165 __func__, MAC2STR(addr), protection_type, key_type);
00166 return 0;
00167 }
00168
00169
00170 static void supp_cancel_auth_timeout(void *ctx)
00171 {
00172 wpa_printf(MSG_DEBUG, "SUPP: %s", __func__);
00173 }
00174
00175
00176 static int supp_init(struct wpa *wpa)
00177 {
00178 struct wpa_sm_ctx *ctx = os_zalloc(sizeof(*ctx));
00179 if (ctx == NULL)
00180 return -1;
00181
00182 ctx->ctx = wpa;
00183 ctx->msg_ctx = wpa;
00184 ctx->set_state = supp_set_state;
00185 ctx->get_bssid = supp_get_bssid;
00186 ctx->ether_send = supp_ether_send;
00187 ctx->get_beacon_ie = supp_get_beacon_ie;
00188 ctx->alloc_eapol = supp_alloc_eapol;
00189 ctx->set_key = supp_set_key;
00190 ctx->mlme_setprotection = supp_mlme_setprotection;
00191 ctx->cancel_auth_timeout = supp_cancel_auth_timeout;
00192 wpa->supp = wpa_sm_init(ctx);
00193 if (wpa->supp == NULL) {
00194 wpa_printf(MSG_DEBUG, "SUPP: wpa_sm_init() failed");
00195 return -1;
00196 }
00197
00198 wpa_sm_set_own_addr(wpa->supp, wpa->supp_addr);
00199 wpa_sm_set_param(wpa->supp, WPA_PARAM_RSN_ENABLED, 1);
00200 wpa_sm_set_param(wpa->supp, WPA_PARAM_PROTO, WPA_PROTO_RSN);
00201 wpa_sm_set_param(wpa->supp, WPA_PARAM_PAIRWISE, WPA_CIPHER_CCMP);
00202 wpa_sm_set_param(wpa->supp, WPA_PARAM_GROUP, WPA_CIPHER_CCMP);
00203 wpa_sm_set_param(wpa->supp, WPA_PARAM_KEY_MGMT, WPA_KEY_MGMT_PSK);
00204 wpa_sm_set_pmk(wpa->supp, wpa->psk, PMK_LEN);
00205
00206 wpa->supp_ie_len = sizeof(wpa->supp_ie);
00207 if (wpa_sm_set_assoc_wpa_ie_default(wpa->supp, wpa->supp_ie,
00208 &wpa->supp_ie_len) < 0) {
00209 wpa_printf(MSG_DEBUG, "SUPP: wpa_sm_set_assoc_wpa_ie_default()"
00210 " failed");
00211 return -1;
00212 }
00213
00214 wpa_sm_notify_assoc(wpa->supp, wpa->auth_addr);
00215
00216 return 0;
00217 }
00218
00219
00220 static void auth_logger(void *ctx, const u8 *addr, logger_level level,
00221 const char *txt)
00222 {
00223 if (addr)
00224 wpa_printf(MSG_DEBUG, "AUTH: " MACSTR " - %s",
00225 MAC2STR(addr), txt);
00226 else
00227 wpa_printf(MSG_DEBUG, "AUTH: %s", txt);
00228 }
00229
00230
00231 static void supp_eapol_rx(void *eloop_data, void *user_ctx)
00232 {
00233 struct wpa *wpa = eloop_data;
00234
00235 wpa_printf(MSG_DEBUG, "SUPP: RX EAPOL frame");
00236 wpa_sm_rx_eapol(wpa->supp, wpa->auth_addr, wpa->auth_eapol,
00237 wpa->auth_eapol_len);
00238 }
00239
00240
00241 static int auth_send_eapol(void *ctx, const u8 *addr, const u8 *data,
00242 size_t data_len, int encrypt)
00243 {
00244 struct wpa *wpa = ctx;
00245
00246 wpa_printf(MSG_DEBUG, "AUTH: %s(addr=" MACSTR " data_len=%lu "
00247 "encrypt=%d)",
00248 __func__, MAC2STR(addr), (unsigned long) data_len, encrypt);
00249
00250 os_free(wpa->auth_eapol);
00251 wpa->auth_eapol = os_malloc(data_len);
00252 if (wpa->auth_eapol == NULL)
00253 return -1;
00254 os_memcpy(wpa->auth_eapol_dst, addr, ETH_ALEN);
00255 os_memcpy(wpa->auth_eapol, data, data_len);
00256 wpa->auth_eapol_len = data_len;
00257 eloop_register_timeout(0, 0, supp_eapol_rx, wpa, NULL);
00258
00259 return 0;
00260 }
00261
00262
00263 static const u8 * auth_get_psk(void *ctx, const u8 *addr, const u8 *prev_psk)
00264 {
00265 struct wpa *wpa = ctx;
00266 wpa_printf(MSG_DEBUG, "AUTH: %s (addr=" MACSTR " prev_psk=%p)",
00267 __func__, MAC2STR(addr), prev_psk);
00268 if (prev_psk)
00269 return NULL;
00270 return wpa->psk;
00271 }
00272
00273
00274 static int auth_init_group(struct wpa *wpa)
00275 {
00276 struct wpa_auth_config conf;
00277 struct wpa_auth_callbacks cb;
00278
00279 wpa_printf(MSG_DEBUG, "AUTH: Initializing group state machine");
00280
00281 os_memset(&conf, 0, sizeof(conf));
00282 conf.wpa = 2;
00283 conf.wpa_key_mgmt = WPA_KEY_MGMT_PSK;
00284 conf.wpa_pairwise = WPA_CIPHER_CCMP;
00285 conf.rsn_pairwise = WPA_CIPHER_CCMP;
00286 conf.wpa_group = WPA_CIPHER_CCMP;
00287 conf.eapol_version = 2;
00288
00289 os_memset(&cb, 0, sizeof(cb));
00290 cb.ctx = wpa;
00291 cb.logger = auth_logger;
00292 cb.send_eapol = auth_send_eapol;
00293 cb.get_psk = auth_get_psk;
00294
00295 wpa->auth_group = wpa_init(wpa->auth_addr, &conf, &cb);
00296 if (wpa->auth_group == NULL) {
00297 wpa_printf(MSG_DEBUG, "AUTH: wpa_init() failed");
00298 return -1;
00299 }
00300
00301 return 0;
00302 }
00303
00304
00305 static int auth_init(struct wpa *wpa)
00306 {
00307 wpa->auth = wpa_auth_sta_init(wpa->auth_group, wpa->supp_addr);
00308 if (wpa->auth == NULL) {
00309 wpa_printf(MSG_DEBUG, "AUTH: wpa_auth_sta_init() failed");
00310 return -1;
00311 }
00312
00313 if (wpa_validate_wpa_ie(wpa->auth_group, wpa->auth, wpa->supp_ie,
00314 wpa->supp_ie_len, NULL, 0) != WPA_IE_OK) {
00315 wpa_printf(MSG_DEBUG, "AUTH: wpa_validate_wpa_ie() failed");
00316 return -1;
00317 }
00318
00319 wpa_auth_sm_event(wpa->auth, WPA_ASSOC);
00320
00321 wpa_auth_sta_associated(wpa->auth_group, wpa->auth);
00322
00323 return 0;
00324 }
00325
00326
00327 static void deinit(struct wpa *wpa)
00328 {
00329 wpa_auth_sta_deinit(wpa->auth);
00330 wpa_sm_deinit(wpa->supp);
00331 wpa_deinit(wpa->auth_group);
00332 os_free(wpa->auth_eapol);
00333 wpa->auth_eapol = NULL;
00334 os_free(wpa->supp_eapol);
00335 wpa->supp_eapol = NULL;
00336 }
00337
00338
00339 int main(int argc, char *argv[])
00340 {
00341 struct wpa wpa;
00342
00343 if (os_program_init())
00344 return -1;
00345
00346 os_memset(&wpa, 0, sizeof(wpa));
00347 os_memset(wpa.auth_addr, 0x12, ETH_ALEN);
00348 os_memset(wpa.supp_addr, 0x32, ETH_ALEN);
00349 os_memset(wpa.psk, 0x44, PMK_LEN);
00350
00351 wpa_debug_level = 0;
00352 wpa_debug_show_keys = 1;
00353
00354 if (eloop_init()) {
00355 wpa_printf(MSG_ERROR, "Failed to initialize event loop");
00356 return -1;
00357 }
00358
00359 if (auth_init_group(&wpa) < 0)
00360 return -1;
00361
00362 if (supp_init(&wpa) < 0)
00363 return -1;
00364
00365 if (auth_init(&wpa) < 0)
00366 return -1;
00367
00368 wpa_printf(MSG_DEBUG, "Starting eloop");
00369 eloop_run();
00370 wpa_printf(MSG_DEBUG, "eloop done");
00371
00372 deinit(&wpa);
00373
00374 eloop_destroy();
00375
00376 os_program_deinit();
00377
00378 return 0;
00379 }