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