1 /*
2 * Authentication server setup
3 * Copyright (c) 2002-2009, 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
9 #include "utils/includes.h"
10
11 #include "utils/common.h"
12 #include "crypto/crypto.h"
13 #include "crypto/tls.h"
14 #include "eap_server/eap.h"
15 #include "eap_server/eap_sim_db.h"
16 #include "eapol_auth/eapol_auth_sm.h"
17 #include "radius/radius_server.h"
18 #include "hostapd.h"
19 #include "ap_config.h"
20 #include "sta_info.h"
21 #include "authsrv.h"
22
23
24 #if defined(EAP_SERVER_SIM) || defined(EAP_SERVER_AKA)
25 #define EAP_SIM_DB
26 #endif /* EAP_SERVER_SIM || EAP_SERVER_AKA */
27
28
29 #ifdef EAP_SIM_DB
hostapd_sim_db_cb_sta(struct hostapd_data * hapd,struct sta_info * sta,void * ctx)30 static int hostapd_sim_db_cb_sta(struct hostapd_data *hapd,
31 struct sta_info *sta, void *ctx)
32 {
33 if (eapol_auth_eap_pending_cb(sta->eapol_sm, ctx) == 0)
34 return 1;
35 return 0;
36 }
37
38
hostapd_sim_db_cb(void * ctx,void * session_ctx)39 static void hostapd_sim_db_cb(void *ctx, void *session_ctx)
40 {
41 struct hostapd_data *hapd = ctx;
42 if (ap_for_each_sta(hapd, hostapd_sim_db_cb_sta, session_ctx) == 0) {
43 #ifdef RADIUS_SERVER
44 radius_server_eap_pending_cb(hapd->radius_srv, session_ctx);
45 #endif /* RADIUS_SERVER */
46 }
47 }
48 #endif /* EAP_SIM_DB */
49
50
51 #ifdef RADIUS_SERVER
52
hostapd_radius_get_eap_user(void * ctx,const u8 * identity,size_t identity_len,int phase2,struct eap_user * user)53 static int hostapd_radius_get_eap_user(void *ctx, const u8 *identity,
54 size_t identity_len, int phase2,
55 struct eap_user *user)
56 {
57 const struct hostapd_eap_user *eap_user;
58 int i;
59 int rv = -1;
60
61 eap_user = hostapd_get_eap_user(ctx, identity, identity_len, phase2);
62 if (eap_user == NULL)
63 goto out;
64
65 if (user == NULL)
66 return 0;
67
68 os_memset(user, 0, sizeof(*user));
69 for (i = 0; i < EAP_MAX_METHODS; i++) {
70 user->methods[i].vendor = eap_user->methods[i].vendor;
71 user->methods[i].method = eap_user->methods[i].method;
72 }
73
74 if (eap_user->password) {
75 user->password = os_memdup(eap_user->password,
76 eap_user->password_len);
77 if (user->password == NULL)
78 goto out;
79 user->password_len = eap_user->password_len;
80 user->password_hash = eap_user->password_hash;
81 if (eap_user->salt && eap_user->salt_len) {
82 user->salt = os_memdup(eap_user->salt,
83 eap_user->salt_len);
84 if (!user->salt)
85 goto out;
86 user->salt_len = eap_user->salt_len;
87 }
88 }
89 user->force_version = eap_user->force_version;
90 user->macacl = eap_user->macacl;
91 user->ttls_auth = eap_user->ttls_auth;
92 user->remediation = eap_user->remediation;
93 user->accept_attr = eap_user->accept_attr;
94 user->t_c_timestamp = eap_user->t_c_timestamp;
95 rv = 0;
96
97 out:
98 if (rv)
99 wpa_printf(MSG_DEBUG, "%s: Failed to find user", __func__);
100
101 return rv;
102 }
103
104
hostapd_setup_radius_srv(struct hostapd_data * hapd)105 static int hostapd_setup_radius_srv(struct hostapd_data *hapd)
106 {
107 struct radius_server_conf srv;
108 struct hostapd_bss_config *conf = hapd->conf;
109 os_memset(&srv, 0, sizeof(srv));
110 srv.client_file = conf->radius_server_clients;
111 srv.auth_port = conf->radius_server_auth_port;
112 srv.acct_port = conf->radius_server_acct_port;
113 srv.conf_ctx = hapd;
114 srv.ipv6 = conf->radius_server_ipv6;
115 srv.get_eap_user = hostapd_radius_get_eap_user;
116 srv.eap_req_id_text = conf->eap_req_id_text;
117 srv.eap_req_id_text_len = conf->eap_req_id_text_len;
118 srv.sqlite_file = conf->eap_user_sqlite;
119 #ifdef CONFIG_RADIUS_TEST
120 srv.dump_msk_file = conf->dump_msk_file;
121 #endif /* CONFIG_RADIUS_TEST */
122 #ifdef CONFIG_HS20
123 srv.subscr_remediation_url = conf->subscr_remediation_url;
124 srv.subscr_remediation_method = conf->subscr_remediation_method;
125 srv.hs20_sim_provisioning_url = conf->hs20_sim_provisioning_url;
126 srv.t_c_server_url = conf->t_c_server_url;
127 #endif /* CONFIG_HS20 */
128 srv.erp_domain = conf->erp_domain;
129 srv.eap_cfg = hapd->eap_cfg;
130
131 hapd->radius_srv = radius_server_init(&srv);
132 if (hapd->radius_srv == NULL) {
133 wpa_printf(MSG_ERROR, "RADIUS server initialization failed.");
134 return -1;
135 }
136
137 return 0;
138 }
139
140 #endif /* RADIUS_SERVER */
141
142
143 #ifdef EAP_TLS_FUNCS
authsrv_tls_event(void * ctx,enum tls_event ev,union tls_event_data * data)144 static void authsrv_tls_event(void *ctx, enum tls_event ev,
145 union tls_event_data *data)
146 {
147 switch (ev) {
148 case TLS_CERT_CHAIN_SUCCESS:
149 wpa_printf(MSG_DEBUG, "authsrv: remote certificate verification success");
150 break;
151 case TLS_CERT_CHAIN_FAILURE:
152 wpa_printf(MSG_INFO, "authsrv: certificate chain failure: reason=%d depth=%d subject='%s' err='%s'",
153 data->cert_fail.reason,
154 data->cert_fail.depth,
155 data->cert_fail.subject,
156 data->cert_fail.reason_txt);
157 break;
158 case TLS_PEER_CERTIFICATE:
159 wpa_printf(MSG_DEBUG, "authsrv: peer certificate: depth=%d serial_num=%s subject=%s",
160 data->peer_cert.depth,
161 data->peer_cert.serial_num ? data->peer_cert.serial_num : "N/A",
162 data->peer_cert.subject);
163 break;
164 case TLS_ALERT:
165 if (data->alert.is_local)
166 wpa_printf(MSG_DEBUG, "authsrv: local TLS alert: %s",
167 data->alert.description);
168 else
169 wpa_printf(MSG_DEBUG, "authsrv: remote TLS alert: %s",
170 data->alert.description);
171 break;
172 case TLS_UNSAFE_RENEGOTIATION_DISABLED:
173 /* Not applicable to TLS server */
174 break;
175 }
176 }
177 #endif /* EAP_TLS_FUNCS */
178
179
authsrv_eap_config(struct hostapd_data * hapd)180 static struct eap_config * authsrv_eap_config(struct hostapd_data *hapd)
181 {
182 struct eap_config *cfg;
183
184 cfg = os_zalloc(sizeof(*cfg));
185 if (!cfg)
186 return NULL;
187
188 cfg->eap_server = hapd->conf->eap_server;
189 cfg->ssl_ctx = hapd->ssl_ctx;
190 cfg->msg_ctx = hapd->msg_ctx;
191 cfg->eap_sim_db_priv = hapd->eap_sim_db_priv;
192 cfg->tls_session_lifetime = hapd->conf->tls_session_lifetime;
193 cfg->tls_flags = hapd->conf->tls_flags;
194 cfg->max_auth_rounds = hapd->conf->max_auth_rounds;
195 cfg->max_auth_rounds_short = hapd->conf->max_auth_rounds_short;
196 if (hapd->conf->pac_opaque_encr_key)
197 cfg->pac_opaque_encr_key =
198 os_memdup(hapd->conf->pac_opaque_encr_key, 16);
199 if (hapd->conf->eap_fast_a_id) {
200 cfg->eap_fast_a_id = os_memdup(hapd->conf->eap_fast_a_id,
201 hapd->conf->eap_fast_a_id_len);
202 cfg->eap_fast_a_id_len = hapd->conf->eap_fast_a_id_len;
203 }
204 if (hapd->conf->eap_fast_a_id_info)
205 cfg->eap_fast_a_id_info =
206 os_strdup(hapd->conf->eap_fast_a_id_info);
207 cfg->eap_fast_prov = hapd->conf->eap_fast_prov;
208 cfg->pac_key_lifetime = hapd->conf->pac_key_lifetime;
209 cfg->pac_key_refresh_time = hapd->conf->pac_key_refresh_time;
210 cfg->eap_teap_auth = hapd->conf->eap_teap_auth;
211 cfg->eap_teap_pac_no_inner = hapd->conf->eap_teap_pac_no_inner;
212 cfg->eap_teap_separate_result = hapd->conf->eap_teap_separate_result;
213 cfg->eap_teap_id = hapd->conf->eap_teap_id;
214 cfg->eap_teap_method_sequence = hapd->conf->eap_teap_method_sequence;
215 cfg->eap_sim_aka_result_ind = hapd->conf->eap_sim_aka_result_ind;
216 cfg->eap_sim_id = hapd->conf->eap_sim_id;
217 cfg->imsi_privacy_key = hapd->imsi_privacy_key;
218 cfg->tnc = hapd->conf->tnc;
219 cfg->wps = hapd->wps;
220 cfg->fragment_size = hapd->conf->fragment_size;
221 cfg->pwd_group = hapd->conf->pwd_group;
222 cfg->pbc_in_m1 = hapd->conf->pbc_in_m1;
223 if (hapd->conf->server_id) {
224 cfg->server_id = (u8 *) os_strdup(hapd->conf->server_id);
225 cfg->server_id_len = os_strlen(hapd->conf->server_id);
226 } else {
227 cfg->server_id = (u8 *) os_strdup("hostapd");
228 cfg->server_id_len = 7;
229 }
230 cfg->erp = hapd->conf->eap_server_erp;
231 #ifdef CONFIG_TESTING_OPTIONS
232 cfg->skip_prot_success = hapd->conf->eap_skip_prot_success;
233 #endif /* CONFIG_TESTING_OPTIONS */
234
235 return cfg;
236 }
237
238
authsrv_init(struct hostapd_data * hapd)239 int authsrv_init(struct hostapd_data *hapd)
240 {
241 #ifdef EAP_TLS_FUNCS
242 if (hapd->conf->eap_server &&
243 (hapd->conf->ca_cert || hapd->conf->server_cert ||
244 hapd->conf->private_key || hapd->conf->dh_file ||
245 hapd->conf->server_cert2 || hapd->conf->private_key2)) {
246 struct tls_config conf;
247 struct tls_connection_params params;
248
249 os_memset(&conf, 0, sizeof(conf));
250 conf.tls_session_lifetime = hapd->conf->tls_session_lifetime;
251 if (hapd->conf->crl_reload_interval > 0 &&
252 hapd->conf->check_crl <= 0) {
253 wpa_printf(MSG_INFO,
254 "Cannot enable CRL reload functionality - it depends on check_crl being set");
255 } else if (hapd->conf->crl_reload_interval > 0) {
256 conf.crl_reload_interval =
257 hapd->conf->crl_reload_interval;
258 wpa_printf(MSG_INFO,
259 "Enabled CRL reload functionality");
260 }
261 conf.tls_flags = hapd->conf->tls_flags;
262 conf.event_cb = authsrv_tls_event;
263 conf.cb_ctx = hapd;
264 hapd->ssl_ctx = tls_init(&conf);
265 if (hapd->ssl_ctx == NULL) {
266 wpa_printf(MSG_ERROR, "Failed to initialize TLS");
267 authsrv_deinit(hapd);
268 return -1;
269 }
270
271 os_memset(¶ms, 0, sizeof(params));
272 params.ca_cert = hapd->conf->ca_cert;
273 params.client_cert = hapd->conf->server_cert;
274 params.client_cert2 = hapd->conf->server_cert2;
275 params.private_key = hapd->conf->private_key;
276 params.private_key2 = hapd->conf->private_key2;
277 params.private_key_passwd = hapd->conf->private_key_passwd;
278 params.private_key_passwd2 = hapd->conf->private_key_passwd2;
279 params.dh_file = hapd->conf->dh_file;
280 params.openssl_ciphers = hapd->conf->openssl_ciphers;
281 params.openssl_ecdh_curves = hapd->conf->openssl_ecdh_curves;
282 params.ocsp_stapling_response =
283 hapd->conf->ocsp_stapling_response;
284 params.ocsp_stapling_response_multi =
285 hapd->conf->ocsp_stapling_response_multi;
286 params.check_cert_subject = hapd->conf->check_cert_subject;
287
288 if (tls_global_set_params(hapd->ssl_ctx, ¶ms)) {
289 wpa_printf(MSG_ERROR, "Failed to set TLS parameters");
290 authsrv_deinit(hapd);
291 return -1;
292 }
293
294 if (tls_global_set_verify(hapd->ssl_ctx,
295 hapd->conf->check_crl,
296 hapd->conf->check_crl_strict)) {
297 wpa_printf(MSG_ERROR, "Failed to enable check_crl");
298 authsrv_deinit(hapd);
299 return -1;
300 }
301 }
302 #endif /* EAP_TLS_FUNCS */
303
304 #ifdef CRYPTO_RSA_OAEP_SHA256
305 crypto_rsa_key_free(hapd->imsi_privacy_key);
306 hapd->imsi_privacy_key = NULL;
307 if (hapd->conf->imsi_privacy_key) {
308 hapd->imsi_privacy_key = crypto_rsa_key_read(
309 hapd->conf->imsi_privacy_key, true);
310 if (!hapd->imsi_privacy_key) {
311 wpa_printf(MSG_ERROR,
312 "Failed to read/parse IMSI privacy key %s",
313 hapd->conf->imsi_privacy_key);
314 authsrv_deinit(hapd);
315 return -1;
316 }
317 }
318 #endif /* CRYPTO_RSA_OAEP_SHA256 */
319
320 #ifdef EAP_SIM_DB
321 if (hapd->conf->eap_sim_db) {
322 hapd->eap_sim_db_priv =
323 eap_sim_db_init(hapd->conf->eap_sim_db,
324 hapd->conf->eap_sim_db_timeout,
325 hostapd_sim_db_cb, hapd);
326 if (hapd->eap_sim_db_priv == NULL) {
327 wpa_printf(MSG_ERROR, "Failed to initialize EAP-SIM "
328 "database interface");
329 authsrv_deinit(hapd);
330 return -1;
331 }
332 }
333 #endif /* EAP_SIM_DB */
334
335 hapd->eap_cfg = authsrv_eap_config(hapd);
336 if (!hapd->eap_cfg) {
337 wpa_printf(MSG_ERROR,
338 "Failed to build EAP server configuration");
339 authsrv_deinit(hapd);
340 return -1;
341 }
342
343 #ifdef RADIUS_SERVER
344 if (hapd->conf->radius_server_clients &&
345 hostapd_setup_radius_srv(hapd))
346 return -1;
347 #endif /* RADIUS_SERVER */
348
349 return 0;
350 }
351
352
authsrv_deinit(struct hostapd_data * hapd)353 void authsrv_deinit(struct hostapd_data *hapd)
354 {
355 #ifdef RADIUS_SERVER
356 radius_server_deinit(hapd->radius_srv);
357 hapd->radius_srv = NULL;
358 #endif /* RADIUS_SERVER */
359
360 #ifdef CRYPTO_RSA_OAEP_SHA256
361 crypto_rsa_key_free(hapd->imsi_privacy_key);
362 hapd->imsi_privacy_key = NULL;
363 #endif /* CRYPTO_RSA_OAEP_SHA256 */
364
365 #ifdef EAP_TLS_FUNCS
366 if (hapd->ssl_ctx) {
367 tls_deinit(hapd->ssl_ctx);
368 hapd->ssl_ctx = NULL;
369 }
370 #endif /* EAP_TLS_FUNCS */
371
372 #ifdef EAP_SIM_DB
373 if (hapd->eap_sim_db_priv) {
374 eap_sim_db_deinit(hapd->eap_sim_db_priv);
375 hapd->eap_sim_db_priv = NULL;
376 }
377 #endif /* EAP_SIM_DB */
378
379 eap_server_config_free(hapd->eap_cfg);
380 hapd->eap_cfg = NULL;
381 }
382