xref: /freebsd/contrib/wpa/src/ap/authsrv.c (revision 62cfcf62f627e5093fb37026a6d8c98e4d2ef04c)
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
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 
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 
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 
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.eap_sim_db_priv = hapd->eap_sim_db_priv;
114 	srv.ssl_ctx = hapd->ssl_ctx;
115 	srv.msg_ctx = hapd->msg_ctx;
116 	srv.pac_opaque_encr_key = conf->pac_opaque_encr_key;
117 	srv.eap_fast_a_id = conf->eap_fast_a_id;
118 	srv.eap_fast_a_id_len = conf->eap_fast_a_id_len;
119 	srv.eap_fast_a_id_info = conf->eap_fast_a_id_info;
120 	srv.eap_fast_prov = conf->eap_fast_prov;
121 	srv.pac_key_lifetime = conf->pac_key_lifetime;
122 	srv.pac_key_refresh_time = conf->pac_key_refresh_time;
123 	srv.eap_teap_auth = conf->eap_teap_auth;
124 	srv.eap_teap_pac_no_inner = conf->eap_teap_pac_no_inner;
125 	srv.eap_sim_aka_result_ind = conf->eap_sim_aka_result_ind;
126 	srv.eap_sim_id = conf->eap_sim_id;
127 	srv.tnc = conf->tnc;
128 	srv.wps = hapd->wps;
129 	srv.ipv6 = conf->radius_server_ipv6;
130 	srv.get_eap_user = hostapd_radius_get_eap_user;
131 	srv.eap_req_id_text = conf->eap_req_id_text;
132 	srv.eap_req_id_text_len = conf->eap_req_id_text_len;
133 	srv.pwd_group = conf->pwd_group;
134 	srv.server_id = conf->server_id ? conf->server_id : "hostapd";
135 	srv.sqlite_file = conf->eap_user_sqlite;
136 #ifdef CONFIG_RADIUS_TEST
137 	srv.dump_msk_file = conf->dump_msk_file;
138 #endif /* CONFIG_RADIUS_TEST */
139 #ifdef CONFIG_HS20
140 	srv.subscr_remediation_url = conf->subscr_remediation_url;
141 	srv.subscr_remediation_method = conf->subscr_remediation_method;
142 	srv.hs20_sim_provisioning_url = conf->hs20_sim_provisioning_url;
143 	srv.t_c_server_url = conf->t_c_server_url;
144 #endif /* CONFIG_HS20 */
145 	srv.erp = conf->eap_server_erp;
146 	srv.erp_domain = conf->erp_domain;
147 	srv.tls_session_lifetime = conf->tls_session_lifetime;
148 	srv.tls_flags = conf->tls_flags;
149 
150 	hapd->radius_srv = radius_server_init(&srv);
151 	if (hapd->radius_srv == NULL) {
152 		wpa_printf(MSG_ERROR, "RADIUS server initialization failed.");
153 		return -1;
154 	}
155 
156 	return 0;
157 }
158 
159 #endif /* RADIUS_SERVER */
160 
161 
162 #ifdef EAP_TLS_FUNCS
163 static void authsrv_tls_event(void *ctx, enum tls_event ev,
164 			      union tls_event_data *data)
165 {
166 	switch (ev) {
167 	case TLS_CERT_CHAIN_SUCCESS:
168 		wpa_printf(MSG_DEBUG, "authsrv: remote certificate verification success");
169 		break;
170 	case TLS_CERT_CHAIN_FAILURE:
171 		wpa_printf(MSG_INFO, "authsrv: certificate chain failure: reason=%d depth=%d subject='%s' err='%s'",
172 			   data->cert_fail.reason,
173 			   data->cert_fail.depth,
174 			   data->cert_fail.subject,
175 			   data->cert_fail.reason_txt);
176 		break;
177 	case TLS_PEER_CERTIFICATE:
178 		wpa_printf(MSG_DEBUG, "authsrv: peer certificate: depth=%d serial_num=%s subject=%s",
179 			   data->peer_cert.depth,
180 			   data->peer_cert.serial_num ? data->peer_cert.serial_num : "N/A",
181 			   data->peer_cert.subject);
182 		break;
183 	case TLS_ALERT:
184 		if (data->alert.is_local)
185 			wpa_printf(MSG_DEBUG, "authsrv: local TLS alert: %s",
186 				   data->alert.description);
187 		else
188 			wpa_printf(MSG_DEBUG, "authsrv: remote TLS alert: %s",
189 				   data->alert.description);
190 		break;
191 	}
192 }
193 #endif /* EAP_TLS_FUNCS */
194 
195 
196 int authsrv_init(struct hostapd_data *hapd)
197 {
198 #ifdef EAP_TLS_FUNCS
199 	if (hapd->conf->eap_server &&
200 	    (hapd->conf->ca_cert || hapd->conf->server_cert ||
201 	     hapd->conf->private_key || hapd->conf->dh_file ||
202 	     hapd->conf->server_cert2 || hapd->conf->private_key2)) {
203 		struct tls_config conf;
204 		struct tls_connection_params params;
205 
206 		os_memset(&conf, 0, sizeof(conf));
207 		conf.tls_session_lifetime = hapd->conf->tls_session_lifetime;
208 		if (hapd->conf->crl_reload_interval > 0 &&
209 		    hapd->conf->check_crl <= 0) {
210 			wpa_printf(MSG_INFO,
211 				   "Cannot enable CRL reload functionality - it depends on check_crl being set");
212 		} else if (hapd->conf->crl_reload_interval > 0) {
213 			conf.crl_reload_interval =
214 				hapd->conf->crl_reload_interval;
215 			wpa_printf(MSG_INFO,
216 				   "Enabled CRL reload functionality");
217 		}
218 		conf.tls_flags = hapd->conf->tls_flags;
219 		conf.event_cb = authsrv_tls_event;
220 		conf.cb_ctx = hapd;
221 		hapd->ssl_ctx = tls_init(&conf);
222 		if (hapd->ssl_ctx == NULL) {
223 			wpa_printf(MSG_ERROR, "Failed to initialize TLS");
224 			authsrv_deinit(hapd);
225 			return -1;
226 		}
227 
228 		os_memset(&params, 0, sizeof(params));
229 		params.ca_cert = hapd->conf->ca_cert;
230 		params.client_cert = hapd->conf->server_cert;
231 		params.client_cert2 = hapd->conf->server_cert2;
232 		params.private_key = hapd->conf->private_key;
233 		params.private_key2 = hapd->conf->private_key2;
234 		params.private_key_passwd = hapd->conf->private_key_passwd;
235 		params.private_key_passwd2 = hapd->conf->private_key_passwd2;
236 		params.dh_file = hapd->conf->dh_file;
237 		params.openssl_ciphers = hapd->conf->openssl_ciphers;
238 		params.openssl_ecdh_curves = hapd->conf->openssl_ecdh_curves;
239 		params.ocsp_stapling_response =
240 			hapd->conf->ocsp_stapling_response;
241 		params.ocsp_stapling_response_multi =
242 			hapd->conf->ocsp_stapling_response_multi;
243 		params.check_cert_subject = hapd->conf->check_cert_subject;
244 
245 		if (tls_global_set_params(hapd->ssl_ctx, &params)) {
246 			wpa_printf(MSG_ERROR, "Failed to set TLS parameters");
247 			authsrv_deinit(hapd);
248 			return -1;
249 		}
250 
251 		if (tls_global_set_verify(hapd->ssl_ctx,
252 					  hapd->conf->check_crl,
253 					  hapd->conf->check_crl_strict)) {
254 			wpa_printf(MSG_ERROR, "Failed to enable check_crl");
255 			authsrv_deinit(hapd);
256 			return -1;
257 		}
258 	}
259 #endif /* EAP_TLS_FUNCS */
260 
261 #ifdef EAP_SIM_DB
262 	if (hapd->conf->eap_sim_db) {
263 		hapd->eap_sim_db_priv =
264 			eap_sim_db_init(hapd->conf->eap_sim_db,
265 					hapd->conf->eap_sim_db_timeout,
266 					hostapd_sim_db_cb, hapd);
267 		if (hapd->eap_sim_db_priv == NULL) {
268 			wpa_printf(MSG_ERROR, "Failed to initialize EAP-SIM "
269 				   "database interface");
270 			authsrv_deinit(hapd);
271 			return -1;
272 		}
273 	}
274 #endif /* EAP_SIM_DB */
275 
276 #ifdef RADIUS_SERVER
277 	if (hapd->conf->radius_server_clients &&
278 	    hostapd_setup_radius_srv(hapd))
279 		return -1;
280 #endif /* RADIUS_SERVER */
281 
282 	return 0;
283 }
284 
285 
286 void authsrv_deinit(struct hostapd_data *hapd)
287 {
288 #ifdef RADIUS_SERVER
289 	radius_server_deinit(hapd->radius_srv);
290 	hapd->radius_srv = NULL;
291 #endif /* RADIUS_SERVER */
292 
293 #ifdef EAP_TLS_FUNCS
294 	if (hapd->ssl_ctx) {
295 		tls_deinit(hapd->ssl_ctx);
296 		hapd->ssl_ctx = NULL;
297 	}
298 #endif /* EAP_TLS_FUNCS */
299 
300 #ifdef EAP_SIM_DB
301 	if (hapd->eap_sim_db_priv) {
302 		eap_sim_db_deinit(hapd->eap_sim_db_priv);
303 		hapd->eap_sim_db_priv = NULL;
304 	}
305 #endif /* EAP_SIM_DB */
306 }
307