2 * hostapd / RADIUS Accounting
3 * Copyright (c) 2002-2008, Jouni Malinen <j@w1.fi>
5 * This program is free software; you can redistribute it and/or modify
6 * it under the terms of the GNU General Public License version 2 as
7 * published by the Free Software Foundation.
9 * Alternatively, this software may be distributed under the terms of BSD
12 * See README and COPYING for more details.
18 #include "radius/radius.h"
19 #include "radius/radius_client.h"
21 #include "accounting.h"
22 #include "ieee802_1x.h"
26 /* Default interval in seconds for polling TX/RX octets from the driver if
27 * STA is not using interim accounting. This detects wrap arounds for
28 * input/output octets and updates Acct-{Input,Output}-Gigawords. */
29 #define ACCT_DEFAULT_UPDATE_INTERVAL 300
31 static void accounting_sta_get_id(struct hostapd_data
*hapd
,
32 struct sta_info
*sta
);
35 static struct radius_msg
* accounting_msg(struct hostapd_data
*hapd
,
39 struct radius_msg
*msg
;
45 msg
= radius_msg_new(RADIUS_CODE_ACCOUNTING_REQUEST
,
46 radius_client_get_id(hapd
->radius
));
48 printf("Could not create net RADIUS packet\n");
53 radius_msg_make_authenticator(msg
, (u8
*) sta
, sizeof(*sta
));
55 os_snprintf(buf
, sizeof(buf
), "%08X-%08X",
56 sta
->acct_session_id_hi
, sta
->acct_session_id_lo
);
57 if (!radius_msg_add_attr(msg
, RADIUS_ATTR_ACCT_SESSION_ID
,
58 (u8
*) buf
, os_strlen(buf
))) {
59 printf("Could not add Acct-Session-Id\n");
63 radius_msg_make_authenticator(msg
, (u8
*) hapd
, sizeof(*hapd
));
66 if (!radius_msg_add_attr_int32(msg
, RADIUS_ATTR_ACCT_STATUS_TYPE
,
68 printf("Could not add Acct-Status-Type\n");
72 if (!radius_msg_add_attr_int32(msg
, RADIUS_ATTR_ACCT_AUTHENTIC
,
73 hapd
->conf
->ieee802_1x
?
74 RADIUS_ACCT_AUTHENTIC_RADIUS
:
75 RADIUS_ACCT_AUTHENTIC_LOCAL
)) {
76 printf("Could not add Acct-Authentic\n");
81 val
= ieee802_1x_get_identity(sta
->eapol_sm
, &len
);
83 os_snprintf(buf
, sizeof(buf
), RADIUS_ADDR_FORMAT
,
89 if (!radius_msg_add_attr(msg
, RADIUS_ATTR_USER_NAME
, val
,
91 printf("Could not add User-Name\n");
96 if (hapd
->conf
->own_ip_addr
.af
== AF_INET
&&
97 !radius_msg_add_attr(msg
, RADIUS_ATTR_NAS_IP_ADDRESS
,
98 (u8
*) &hapd
->conf
->own_ip_addr
.u
.v4
, 4)) {
99 printf("Could not add NAS-IP-Address\n");
104 if (hapd
->conf
->own_ip_addr
.af
== AF_INET6
&&
105 !radius_msg_add_attr(msg
, RADIUS_ATTR_NAS_IPV6_ADDRESS
,
106 (u8
*) &hapd
->conf
->own_ip_addr
.u
.v6
, 16)) {
107 printf("Could not add NAS-IPv6-Address\n");
110 #endif /* CONFIG_IPV6 */
112 if (hapd
->conf
->nas_identifier
&&
113 !radius_msg_add_attr(msg
, RADIUS_ATTR_NAS_IDENTIFIER
,
114 (u8
*) hapd
->conf
->nas_identifier
,
115 os_strlen(hapd
->conf
->nas_identifier
))) {
116 printf("Could not add NAS-Identifier\n");
121 !radius_msg_add_attr_int32(msg
, RADIUS_ATTR_NAS_PORT
, sta
->aid
)) {
122 printf("Could not add NAS-Port\n");
126 os_snprintf(buf
, sizeof(buf
), RADIUS_802_1X_ADDR_FORMAT
":%s",
127 MAC2STR(hapd
->own_addr
), hapd
->conf
->ssid
.ssid
);
128 if (!radius_msg_add_attr(msg
, RADIUS_ATTR_CALLED_STATION_ID
,
129 (u8
*) buf
, os_strlen(buf
))) {
130 printf("Could not add Called-Station-Id\n");
135 os_snprintf(buf
, sizeof(buf
), RADIUS_802_1X_ADDR_FORMAT
,
137 if (!radius_msg_add_attr(msg
, RADIUS_ATTR_CALLING_STATION_ID
,
138 (u8
*) buf
, os_strlen(buf
))) {
139 printf("Could not add Calling-Station-Id\n");
143 if (!radius_msg_add_attr_int32(
144 msg
, RADIUS_ATTR_NAS_PORT_TYPE
,
145 RADIUS_NAS_PORT_TYPE_IEEE_802_11
)) {
146 printf("Could not add NAS-Port-Type\n");
150 os_snprintf(buf
, sizeof(buf
), "CONNECT %d%sMbps %s",
151 radius_sta_rate(hapd
, sta
) / 2,
152 (radius_sta_rate(hapd
, sta
) & 1) ? ".5" : "",
153 radius_mode_txt(hapd
));
154 if (!radius_msg_add_attr(msg
, RADIUS_ATTR_CONNECT_INFO
,
155 (u8
*) buf
, os_strlen(buf
))) {
156 printf("Could not add Connect-Info\n");
161 val
= ieee802_1x_get_radius_class(sta
->eapol_sm
, &len
,
166 if (!radius_msg_add_attr(msg
, RADIUS_ATTR_CLASS
,
168 printf("Could not add Class\n");
177 radius_msg_free(msg
);
183 static int accounting_sta_update_stats(struct hostapd_data
*hapd
,
184 struct sta_info
*sta
,
185 struct hostap_sta_driver_data
*data
)
187 if (hostapd_read_sta_data(hapd
, data
, sta
->addr
))
190 if (sta
->last_rx_bytes
> data
->rx_bytes
)
191 sta
->acct_input_gigawords
++;
192 if (sta
->last_tx_bytes
> data
->tx_bytes
)
193 sta
->acct_output_gigawords
++;
194 sta
->last_rx_bytes
= data
->rx_bytes
;
195 sta
->last_tx_bytes
= data
->tx_bytes
;
197 hostapd_logger(hapd
, sta
->addr
, HOSTAPD_MODULE_RADIUS
,
198 HOSTAPD_LEVEL_DEBUG
, "updated TX/RX stats: "
199 "Acct-Input-Octets=%lu Acct-Input-Gigawords=%u "
200 "Acct-Output-Octets=%lu Acct-Output-Gigawords=%u",
201 sta
->last_rx_bytes
, sta
->acct_input_gigawords
,
202 sta
->last_tx_bytes
, sta
->acct_output_gigawords
);
208 static void accounting_interim_update(void *eloop_ctx
, void *timeout_ctx
)
210 struct hostapd_data
*hapd
= eloop_ctx
;
211 struct sta_info
*sta
= timeout_ctx
;
214 if (sta
->acct_interim_interval
) {
215 accounting_sta_interim(hapd
, sta
);
216 interval
= sta
->acct_interim_interval
;
218 struct hostap_sta_driver_data data
;
219 accounting_sta_update_stats(hapd
, sta
, &data
);
220 interval
= ACCT_DEFAULT_UPDATE_INTERVAL
;
223 eloop_register_timeout(interval
, 0, accounting_interim_update
,
228 void accounting_sta_start(struct hostapd_data
*hapd
, struct sta_info
*sta
)
230 struct radius_msg
*msg
;
233 if (sta
->acct_session_started
)
236 accounting_sta_get_id(hapd
, sta
);
237 hostapd_logger(hapd
, sta
->addr
, HOSTAPD_MODULE_RADIUS
,
239 "starting accounting session %08X-%08X",
240 sta
->acct_session_id_hi
, sta
->acct_session_id_lo
);
242 time(&sta
->acct_session_start
);
243 sta
->last_rx_bytes
= sta
->last_tx_bytes
= 0;
244 sta
->acct_input_gigawords
= sta
->acct_output_gigawords
= 0;
245 hostapd_sta_clear_stats(hapd
, sta
->addr
);
247 if (!hapd
->conf
->radius
->acct_server
)
250 if (sta
->acct_interim_interval
)
251 interval
= sta
->acct_interim_interval
;
253 interval
= ACCT_DEFAULT_UPDATE_INTERVAL
;
254 eloop_register_timeout(interval
, 0, accounting_interim_update
,
257 msg
= accounting_msg(hapd
, sta
, RADIUS_ACCT_STATUS_TYPE_START
);
259 radius_client_send(hapd
->radius
, msg
, RADIUS_ACCT
, sta
->addr
);
261 sta
->acct_session_started
= 1;
265 static void accounting_sta_report(struct hostapd_data
*hapd
,
266 struct sta_info
*sta
, int stop
)
268 struct radius_msg
*msg
;
269 int cause
= sta
->acct_terminate_cause
;
270 struct hostap_sta_driver_data data
;
273 if (!hapd
->conf
->radius
->acct_server
)
276 msg
= accounting_msg(hapd
, sta
,
277 stop
? RADIUS_ACCT_STATUS_TYPE_STOP
:
278 RADIUS_ACCT_STATUS_TYPE_INTERIM_UPDATE
);
280 printf("Could not create RADIUS Accounting message\n");
284 if (!radius_msg_add_attr_int32(msg
, RADIUS_ATTR_ACCT_SESSION_TIME
,
285 time(NULL
) - sta
->acct_session_start
)) {
286 printf("Could not add Acct-Session-Time\n");
290 if (accounting_sta_update_stats(hapd
, sta
, &data
) == 0) {
291 if (!radius_msg_add_attr_int32(msg
,
292 RADIUS_ATTR_ACCT_INPUT_PACKETS
,
294 printf("Could not add Acct-Input-Packets\n");
297 if (!radius_msg_add_attr_int32(msg
,
298 RADIUS_ATTR_ACCT_OUTPUT_PACKETS
,
300 printf("Could not add Acct-Output-Packets\n");
303 if (!radius_msg_add_attr_int32(msg
,
304 RADIUS_ATTR_ACCT_INPUT_OCTETS
,
306 printf("Could not add Acct-Input-Octets\n");
309 gigawords
= sta
->acct_input_gigawords
;
311 gigawords
+= data
.rx_bytes
>> 32;
314 !radius_msg_add_attr_int32(
315 msg
, RADIUS_ATTR_ACCT_INPUT_GIGAWORDS
,
317 printf("Could not add Acct-Input-Gigawords\n");
320 if (!radius_msg_add_attr_int32(msg
,
321 RADIUS_ATTR_ACCT_OUTPUT_OCTETS
,
323 printf("Could not add Acct-Output-Octets\n");
326 gigawords
= sta
->acct_output_gigawords
;
328 gigawords
+= data
.tx_bytes
>> 32;
331 !radius_msg_add_attr_int32(
332 msg
, RADIUS_ATTR_ACCT_OUTPUT_GIGAWORDS
,
334 printf("Could not add Acct-Output-Gigawords\n");
339 if (!radius_msg_add_attr_int32(msg
, RADIUS_ATTR_EVENT_TIMESTAMP
,
341 printf("Could not add Event-Timestamp\n");
345 if (eloop_terminated())
346 cause
= RADIUS_ACCT_TERMINATE_CAUSE_ADMIN_REBOOT
;
349 !radius_msg_add_attr_int32(msg
, RADIUS_ATTR_ACCT_TERMINATE_CAUSE
,
351 printf("Could not add Acct-Terminate-Cause\n");
355 radius_client_send(hapd
->radius
, msg
,
356 stop
? RADIUS_ACCT
: RADIUS_ACCT_INTERIM
,
361 radius_msg_free(msg
);
366 void accounting_sta_interim(struct hostapd_data
*hapd
, struct sta_info
*sta
)
368 if (sta
->acct_session_started
)
369 accounting_sta_report(hapd
, sta
, 0);
373 void accounting_sta_stop(struct hostapd_data
*hapd
, struct sta_info
*sta
)
375 if (sta
->acct_session_started
) {
376 accounting_sta_report(hapd
, sta
, 1);
377 eloop_cancel_timeout(accounting_interim_update
, hapd
, sta
);
378 hostapd_logger(hapd
, sta
->addr
, HOSTAPD_MODULE_RADIUS
,
380 "stopped accounting session %08X-%08X",
381 sta
->acct_session_id_hi
,
382 sta
->acct_session_id_lo
);
383 sta
->acct_session_started
= 0;
388 static void accounting_sta_get_id(struct hostapd_data
*hapd
,
389 struct sta_info
*sta
)
391 sta
->acct_session_id_lo
= hapd
->acct_session_id_lo
++;
392 if (hapd
->acct_session_id_lo
== 0) {
393 hapd
->acct_session_id_hi
++;
395 sta
->acct_session_id_hi
= hapd
->acct_session_id_hi
;
399 /* Process the RADIUS frames from Accounting Server */
400 static RadiusRxResult
401 accounting_receive(struct radius_msg
*msg
, struct radius_msg
*req
,
402 u8
*shared_secret
, size_t shared_secret_len
, void *data
)
404 if (msg
->hdr
->code
!= RADIUS_CODE_ACCOUNTING_RESPONSE
) {
405 printf("Unknown RADIUS message code\n");
406 return RADIUS_RX_UNKNOWN
;
409 if (radius_msg_verify(msg
, shared_secret
, shared_secret_len
, req
, 0)) {
410 printf("Incoming RADIUS packet did not have correct "
411 "Authenticator - dropped\n");
412 return RADIUS_RX_INVALID_AUTHENTICATOR
;
415 return RADIUS_RX_PROCESSED
;
419 static void accounting_report_state(struct hostapd_data
*hapd
, int on
)
421 struct radius_msg
*msg
;
423 if (!hapd
->conf
->radius
->acct_server
|| hapd
->radius
== NULL
)
426 /* Inform RADIUS server that accounting will start/stop so that the
427 * server can close old accounting sessions. */
428 msg
= accounting_msg(hapd
, NULL
,
429 on
? RADIUS_ACCT_STATUS_TYPE_ACCOUNTING_ON
:
430 RADIUS_ACCT_STATUS_TYPE_ACCOUNTING_OFF
);
434 if (!radius_msg_add_attr_int32(msg
, RADIUS_ATTR_ACCT_TERMINATE_CAUSE
,
435 RADIUS_ACCT_TERMINATE_CAUSE_NAS_REBOOT
))
437 printf("Could not add Acct-Terminate-Cause\n");
438 radius_msg_free(msg
);
443 radius_client_send(hapd
->radius
, msg
, RADIUS_ACCT
, NULL
);
447 int accounting_init(struct hostapd_data
*hapd
)
449 /* Acct-Session-Id should be unique over reboots. If reliable clock is
450 * not available, this could be replaced with reboot counter, etc. */
451 hapd
->acct_session_id_hi
= time(NULL
);
453 if (radius_client_register(hapd
->radius
, RADIUS_ACCT
,
454 accounting_receive
, hapd
))
457 accounting_report_state(hapd
, 1);
463 void accounting_deinit(struct hostapd_data
*hapd
)
465 accounting_report_state(hapd
, 0);
469 int accounting_reconfig(struct hostapd_data
*hapd
,
470 struct hostapd_config
*oldconf
)
472 if (!hapd
->radius_client_reconfigured
)
475 accounting_deinit(hapd
);
476 return accounting_init(hapd
);