+++ /dev/null
-/*
- * hostapd / RADIUS Accounting
- * Copyright (c) 2002-2009, Jouni Malinen <j@w1.fi>
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 as
- * published by the Free Software Foundation.
- *
- * Alternatively, this software may be distributed under the terms of BSD
- * license.
- *
- * See README and COPYING for more details.
- */
-
-#include "utils/includes.h"
-
-#include "utils/common.h"
-#include "utils/eloop.h"
-#include "drivers/driver.h"
-#include "radius/radius.h"
-#include "radius/radius_client.h"
-#include "hostapd.h"
-#include "ieee802_1x.h"
-#include "ap_config.h"
-#include "sta_info.h"
-#include "accounting.h"
-
-
-/* Default interval in seconds for polling TX/RX octets from the driver if
- * STA is not using interim accounting. This detects wrap arounds for
- * input/output octets and updates Acct-{Input,Output}-Gigawords. */
-#define ACCT_DEFAULT_UPDATE_INTERVAL 300
-
-static void accounting_sta_get_id(struct hostapd_data *hapd,
- struct sta_info *sta);
-
-
-static struct radius_msg * accounting_msg(struct hostapd_data *hapd,
- struct sta_info *sta,
- int status_type)
-{
- struct radius_msg *msg;
- char buf[128];
- u8 *val;
- size_t len;
- int i;
-
- msg = radius_msg_new(RADIUS_CODE_ACCOUNTING_REQUEST,
- radius_client_get_id(hapd->radius));
- if (msg == NULL) {
- printf("Could not create net RADIUS packet\n");
- return NULL;
- }
-
- if (sta) {
- radius_msg_make_authenticator(msg, (u8 *) sta, sizeof(*sta));
-
- os_snprintf(buf, sizeof(buf), "%08X-%08X",
- sta->acct_session_id_hi, sta->acct_session_id_lo);
- if (!radius_msg_add_attr(msg, RADIUS_ATTR_ACCT_SESSION_ID,
- (u8 *) buf, os_strlen(buf))) {
- printf("Could not add Acct-Session-Id\n");
- goto fail;
- }
- } else {
- radius_msg_make_authenticator(msg, (u8 *) hapd, sizeof(*hapd));
- }
-
- if (!radius_msg_add_attr_int32(msg, RADIUS_ATTR_ACCT_STATUS_TYPE,
- status_type)) {
- printf("Could not add Acct-Status-Type\n");
- goto fail;
- }
-
- if (!radius_msg_add_attr_int32(msg, RADIUS_ATTR_ACCT_AUTHENTIC,
- hapd->conf->ieee802_1x ?
- RADIUS_ACCT_AUTHENTIC_RADIUS :
- RADIUS_ACCT_AUTHENTIC_LOCAL)) {
- printf("Could not add Acct-Authentic\n");
- goto fail;
- }
-
- if (sta) {
- val = ieee802_1x_get_identity(sta->eapol_sm, &len);
- if (!val) {
- os_snprintf(buf, sizeof(buf), RADIUS_ADDR_FORMAT,
- MAC2STR(sta->addr));
- val = (u8 *) buf;
- len = os_strlen(buf);
- }
-
- if (!radius_msg_add_attr(msg, RADIUS_ATTR_USER_NAME, val,
- len)) {
- printf("Could not add User-Name\n");
- goto fail;
- }
- }
-
- if (hapd->conf->own_ip_addr.af == AF_INET &&
- !radius_msg_add_attr(msg, RADIUS_ATTR_NAS_IP_ADDRESS,
- (u8 *) &hapd->conf->own_ip_addr.u.v4, 4)) {
- printf("Could not add NAS-IP-Address\n");
- goto fail;
- }
-
-#ifdef CONFIG_IPV6
- if (hapd->conf->own_ip_addr.af == AF_INET6 &&
- !radius_msg_add_attr(msg, RADIUS_ATTR_NAS_IPV6_ADDRESS,
- (u8 *) &hapd->conf->own_ip_addr.u.v6, 16)) {
- printf("Could not add NAS-IPv6-Address\n");
- goto fail;
- }
-#endif /* CONFIG_IPV6 */
-
- if (hapd->conf->nas_identifier &&
- !radius_msg_add_attr(msg, RADIUS_ATTR_NAS_IDENTIFIER,
- (u8 *) hapd->conf->nas_identifier,
- os_strlen(hapd->conf->nas_identifier))) {
- printf("Could not add NAS-Identifier\n");
- goto fail;
- }
-
- if (sta &&
- !radius_msg_add_attr_int32(msg, RADIUS_ATTR_NAS_PORT, sta->aid)) {
- printf("Could not add NAS-Port\n");
- goto fail;
- }
-
- os_snprintf(buf, sizeof(buf), RADIUS_802_1X_ADDR_FORMAT ":%s",
- MAC2STR(hapd->own_addr), hapd->conf->ssid.ssid);
- if (!radius_msg_add_attr(msg, RADIUS_ATTR_CALLED_STATION_ID,
- (u8 *) buf, os_strlen(buf))) {
- printf("Could not add Called-Station-Id\n");
- goto fail;
- }
-
- if (sta) {
- os_snprintf(buf, sizeof(buf), RADIUS_802_1X_ADDR_FORMAT,
- MAC2STR(sta->addr));
- if (!radius_msg_add_attr(msg, RADIUS_ATTR_CALLING_STATION_ID,
- (u8 *) buf, os_strlen(buf))) {
- printf("Could not add Calling-Station-Id\n");
- goto fail;
- }
-
- if (!radius_msg_add_attr_int32(
- msg, RADIUS_ATTR_NAS_PORT_TYPE,
- RADIUS_NAS_PORT_TYPE_IEEE_802_11)) {
- printf("Could not add NAS-Port-Type\n");
- goto fail;
- }
-
- os_snprintf(buf, sizeof(buf), "CONNECT %d%sMbps %s",
- radius_sta_rate(hapd, sta) / 2,
- (radius_sta_rate(hapd, sta) & 1) ? ".5" : "",
- radius_mode_txt(hapd));
- if (!radius_msg_add_attr(msg, RADIUS_ATTR_CONNECT_INFO,
- (u8 *) buf, os_strlen(buf))) {
- printf("Could not add Connect-Info\n");
- goto fail;
- }
-
- for (i = 0; ; i++) {
- val = ieee802_1x_get_radius_class(sta->eapol_sm, &len,
- i);
- if (val == NULL)
- break;
-
- if (!radius_msg_add_attr(msg, RADIUS_ATTR_CLASS,
- val, len)) {
- printf("Could not add Class\n");
- goto fail;
- }
- }
- }
-
- return msg;
-
- fail:
- radius_msg_free(msg);
- return NULL;
-}
-
-
-static int accounting_sta_update_stats(struct hostapd_data *hapd,
- struct sta_info *sta,
- struct hostap_sta_driver_data *data)
-{
- if (hapd->drv.read_sta_data(hapd, data, sta->addr))
- return -1;
-
- if (sta->last_rx_bytes > data->rx_bytes)
- sta->acct_input_gigawords++;
- if (sta->last_tx_bytes > data->tx_bytes)
- sta->acct_output_gigawords++;
- sta->last_rx_bytes = data->rx_bytes;
- sta->last_tx_bytes = data->tx_bytes;
-
- hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_RADIUS,
- HOSTAPD_LEVEL_DEBUG, "updated TX/RX stats: "
- "Acct-Input-Octets=%lu Acct-Input-Gigawords=%u "
- "Acct-Output-Octets=%lu Acct-Output-Gigawords=%u",
- sta->last_rx_bytes, sta->acct_input_gigawords,
- sta->last_tx_bytes, sta->acct_output_gigawords);
-
- return 0;
-}
-
-
-static void accounting_interim_update(void *eloop_ctx, void *timeout_ctx)
-{
- struct hostapd_data *hapd = eloop_ctx;
- struct sta_info *sta = timeout_ctx;
- int interval;
-
- if (sta->acct_interim_interval) {
- accounting_sta_interim(hapd, sta);
- interval = sta->acct_interim_interval;
- } else {
- struct hostap_sta_driver_data data;
- accounting_sta_update_stats(hapd, sta, &data);
- interval = ACCT_DEFAULT_UPDATE_INTERVAL;
- }
-
- eloop_register_timeout(interval, 0, accounting_interim_update,
- hapd, sta);
-}
-
-
-/**
- * accounting_sta_start - Start STA accounting
- * @hapd: hostapd BSS data
- * @sta: The station
- */
-void accounting_sta_start(struct hostapd_data *hapd, struct sta_info *sta)
-{
- struct radius_msg *msg;
- int interval;
-
- if (sta->acct_session_started)
- return;
-
- accounting_sta_get_id(hapd, sta);
- hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_RADIUS,
- HOSTAPD_LEVEL_INFO,
- "starting accounting session %08X-%08X",
- sta->acct_session_id_hi, sta->acct_session_id_lo);
-
- time(&sta->acct_session_start);
- sta->last_rx_bytes = sta->last_tx_bytes = 0;
- sta->acct_input_gigawords = sta->acct_output_gigawords = 0;
- hapd->drv.sta_clear_stats(hapd, sta->addr);
-
- if (!hapd->conf->radius->acct_server)
- return;
-
- if (sta->acct_interim_interval)
- interval = sta->acct_interim_interval;
- else
- interval = ACCT_DEFAULT_UPDATE_INTERVAL;
- eloop_register_timeout(interval, 0, accounting_interim_update,
- hapd, sta);
-
- msg = accounting_msg(hapd, sta, RADIUS_ACCT_STATUS_TYPE_START);
- if (msg)
- radius_client_send(hapd->radius, msg, RADIUS_ACCT, sta->addr);
-
- sta->acct_session_started = 1;
-}
-
-
-static void accounting_sta_report(struct hostapd_data *hapd,
- struct sta_info *sta, int stop)
-{
- struct radius_msg *msg;
- int cause = sta->acct_terminate_cause;
- struct hostap_sta_driver_data data;
- u32 gigawords;
-
- if (!hapd->conf->radius->acct_server)
- return;
-
- msg = accounting_msg(hapd, sta,
- stop ? RADIUS_ACCT_STATUS_TYPE_STOP :
- RADIUS_ACCT_STATUS_TYPE_INTERIM_UPDATE);
- if (!msg) {
- printf("Could not create RADIUS Accounting message\n");
- return;
- }
-
- if (!radius_msg_add_attr_int32(msg, RADIUS_ATTR_ACCT_SESSION_TIME,
- time(NULL) - sta->acct_session_start)) {
- printf("Could not add Acct-Session-Time\n");
- goto fail;
- }
-
- if (accounting_sta_update_stats(hapd, sta, &data) == 0) {
- if (!radius_msg_add_attr_int32(msg,
- RADIUS_ATTR_ACCT_INPUT_PACKETS,
- data.rx_packets)) {
- printf("Could not add Acct-Input-Packets\n");
- goto fail;
- }
- if (!radius_msg_add_attr_int32(msg,
- RADIUS_ATTR_ACCT_OUTPUT_PACKETS,
- data.tx_packets)) {
- printf("Could not add Acct-Output-Packets\n");
- goto fail;
- }
- if (!radius_msg_add_attr_int32(msg,
- RADIUS_ATTR_ACCT_INPUT_OCTETS,
- data.rx_bytes)) {
- printf("Could not add Acct-Input-Octets\n");
- goto fail;
- }
- gigawords = sta->acct_input_gigawords;
-#if __WORDSIZE == 64
- gigawords += data.rx_bytes >> 32;
-#endif
- if (gigawords &&
- !radius_msg_add_attr_int32(
- msg, RADIUS_ATTR_ACCT_INPUT_GIGAWORDS,
- gigawords)) {
- printf("Could not add Acct-Input-Gigawords\n");
- goto fail;
- }
- if (!radius_msg_add_attr_int32(msg,
- RADIUS_ATTR_ACCT_OUTPUT_OCTETS,
- data.tx_bytes)) {
- printf("Could not add Acct-Output-Octets\n");
- goto fail;
- }
- gigawords = sta->acct_output_gigawords;
-#if __WORDSIZE == 64
- gigawords += data.tx_bytes >> 32;
-#endif
- if (gigawords &&
- !radius_msg_add_attr_int32(
- msg, RADIUS_ATTR_ACCT_OUTPUT_GIGAWORDS,
- gigawords)) {
- printf("Could not add Acct-Output-Gigawords\n");
- goto fail;
- }
- }
-
- if (!radius_msg_add_attr_int32(msg, RADIUS_ATTR_EVENT_TIMESTAMP,
- time(NULL))) {
- printf("Could not add Event-Timestamp\n");
- goto fail;
- }
-
- if (eloop_terminated())
- cause = RADIUS_ACCT_TERMINATE_CAUSE_ADMIN_REBOOT;
-
- if (stop && cause &&
- !radius_msg_add_attr_int32(msg, RADIUS_ATTR_ACCT_TERMINATE_CAUSE,
- cause)) {
- printf("Could not add Acct-Terminate-Cause\n");
- goto fail;
- }
-
- radius_client_send(hapd->radius, msg,
- stop ? RADIUS_ACCT : RADIUS_ACCT_INTERIM,
- sta->addr);
- return;
-
- fail:
- radius_msg_free(msg);
-}
-
-
-/**
- * accounting_sta_interim - Send a interim STA accounting report
- * @hapd: hostapd BSS data
- * @sta: The station
- */
-void accounting_sta_interim(struct hostapd_data *hapd, struct sta_info *sta)
-{
- if (sta->acct_session_started)
- accounting_sta_report(hapd, sta, 0);
-}
-
-
-/**
- * accounting_sta_stop - Stop STA accounting
- * @hapd: hostapd BSS data
- * @sta: The station
- */
-void accounting_sta_stop(struct hostapd_data *hapd, struct sta_info *sta)
-{
- if (sta->acct_session_started) {
- accounting_sta_report(hapd, sta, 1);
- eloop_cancel_timeout(accounting_interim_update, hapd, sta);
- hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_RADIUS,
- HOSTAPD_LEVEL_INFO,
- "stopped accounting session %08X-%08X",
- sta->acct_session_id_hi,
- sta->acct_session_id_lo);
- sta->acct_session_started = 0;
- }
-}
-
-
-static void accounting_sta_get_id(struct hostapd_data *hapd,
- struct sta_info *sta)
-{
- sta->acct_session_id_lo = hapd->acct_session_id_lo++;
- if (hapd->acct_session_id_lo == 0) {
- hapd->acct_session_id_hi++;
- }
- sta->acct_session_id_hi = hapd->acct_session_id_hi;
-}
-
-
-/**
- * accounting_receive - Process the RADIUS frames from Accounting Server
- * @msg: RADIUS response message
- * @req: RADIUS request message
- * @shared_secret: RADIUS shared secret
- * @shared_secret_len: Length of shared_secret in octets
- * @data: Context data (struct hostapd_data *)
- * Returns: Processing status
- */
-static RadiusRxResult
-accounting_receive(struct radius_msg *msg, struct radius_msg *req,
- const u8 *shared_secret, size_t shared_secret_len,
- void *data)
-{
- if (radius_msg_get_hdr(msg)->code != RADIUS_CODE_ACCOUNTING_RESPONSE) {
- printf("Unknown RADIUS message code\n");
- return RADIUS_RX_UNKNOWN;
- }
-
- if (radius_msg_verify(msg, shared_secret, shared_secret_len, req, 0)) {
- printf("Incoming RADIUS packet did not have correct "
- "Authenticator - dropped\n");
- return RADIUS_RX_INVALID_AUTHENTICATOR;
- }
-
- return RADIUS_RX_PROCESSED;
-}
-
-
-static void accounting_report_state(struct hostapd_data *hapd, int on)
-{
- struct radius_msg *msg;
-
- if (!hapd->conf->radius->acct_server || hapd->radius == NULL)
- return;
-
- /* Inform RADIUS server that accounting will start/stop so that the
- * server can close old accounting sessions. */
- msg = accounting_msg(hapd, NULL,
- on ? RADIUS_ACCT_STATUS_TYPE_ACCOUNTING_ON :
- RADIUS_ACCT_STATUS_TYPE_ACCOUNTING_OFF);
- if (!msg)
- return;
-
- if (!radius_msg_add_attr_int32(msg, RADIUS_ATTR_ACCT_TERMINATE_CAUSE,
- RADIUS_ACCT_TERMINATE_CAUSE_NAS_REBOOT))
- {
- printf("Could not add Acct-Terminate-Cause\n");
- radius_msg_free(msg);
- return;
- }
-
- radius_client_send(hapd->radius, msg, RADIUS_ACCT, NULL);
-}
-
-
-/**
- * accounting_init: Initialize accounting
- * @hapd: hostapd BSS data
- * Returns: 0 on success, -1 on failure
- */
-int accounting_init(struct hostapd_data *hapd)
-{
- /* Acct-Session-Id should be unique over reboots. If reliable clock is
- * not available, this could be replaced with reboot counter, etc. */
- hapd->acct_session_id_hi = time(NULL);
-
- if (radius_client_register(hapd->radius, RADIUS_ACCT,
- accounting_receive, hapd))
- return -1;
-
- accounting_report_state(hapd, 1);
-
- return 0;
-}
-
-
-/**
- * accounting_deinit: Deinitilize accounting
- * @hapd: hostapd BSS data
- */
-void accounting_deinit(struct hostapd_data *hapd)
-{
- accounting_report_state(hapd, 0);
-}
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