/*
* hostapd - PMKSA cache for IEEE 802.11i RSN
- * Copyright (c) 2004-2008, Jouni Malinen <j@w1.fi>
+ * Copyright (c) 2004-2008, 2012-2015, 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.
+ * This software may be distributed under the terms of the BSD license.
+ * See README for more details.
*/
#include "utils/includes.h"
#include "utils/eloop.h"
#include "eapol_auth/eapol_auth_sm.h"
#include "eapol_auth/eapol_auth_sm_i.h"
+#include "radius/radius_das.h"
#include "sta_info.h"
#include "ap_config.h"
#include "pmksa_cache_auth.h"
static void _pmksa_cache_free_entry(struct rsn_pmksa_cache_entry *entry)
{
- if (entry == NULL)
- return;
os_free(entry->identity);
+ wpabuf_free(entry->cui);
#ifndef CONFIG_NO_RADIUS
radius_free_class(&entry->radius_class);
#endif /* CONFIG_NO_RADIUS */
- os_free(entry);
+ bin_clear_free(entry, sizeof(*entry));
}
-static void pmksa_cache_free_entry(struct rsn_pmksa_cache *pmksa,
- struct rsn_pmksa_cache_entry *entry)
+void pmksa_cache_free_entry(struct rsn_pmksa_cache *pmksa,
+ struct rsn_pmksa_cache_entry *entry)
{
struct rsn_pmksa_cache_entry *pos, *prev;
+ unsigned int hash;
pmksa->pmksa_count--;
pmksa->free_cb(entry, pmksa->ctx);
- pos = pmksa->pmkid[PMKID_HASH(entry->pmkid)];
+
+ /* unlink from hash list */
+ hash = PMKID_HASH(entry->pmkid);
+ pos = pmksa->pmkid[hash];
prev = NULL;
while (pos) {
if (pos == entry) {
- if (prev != NULL) {
- prev->hnext = pos->hnext;
- } else {
- pmksa->pmkid[PMKID_HASH(entry->pmkid)] =
- pos->hnext;
- }
+ if (prev != NULL)
+ prev->hnext = entry->hnext;
+ else
+ pmksa->pmkid[hash] = entry->hnext;
break;
}
prev = pos;
pos = pos->hnext;
}
+ /* unlink from entry list */
pos = pmksa->pmksa;
prev = NULL;
while (pos) {
if (pos == entry) {
if (prev != NULL)
- prev->next = pos->next;
+ prev->next = entry->next;
else
- pmksa->pmksa = pos->next;
+ pmksa->pmksa = entry->next;
break;
}
prev = pos;
pos = pos->next;
}
+
_pmksa_cache_free_entry(entry);
}
static void pmksa_cache_expire(void *eloop_ctx, void *timeout_ctx)
{
struct rsn_pmksa_cache *pmksa = eloop_ctx;
- struct os_time now;
+ struct os_reltime now;
- os_get_time(&now);
+ os_get_reltime(&now);
while (pmksa->pmksa && pmksa->pmksa->expiration <= now.sec) {
- struct rsn_pmksa_cache_entry *entry = pmksa->pmksa;
- pmksa->pmksa = entry->next;
wpa_printf(MSG_DEBUG, "RSN: expired PMKSA cache entry for "
- MACSTR, MAC2STR(entry->spa));
- pmksa_cache_free_entry(pmksa, entry);
+ MACSTR, MAC2STR(pmksa->pmksa->spa));
+ pmksa_cache_free_entry(pmksa, pmksa->pmksa);
}
pmksa_cache_set_expiration(pmksa);
static void pmksa_cache_set_expiration(struct rsn_pmksa_cache *pmksa)
{
int sec;
- struct os_time now;
+ struct os_reltime now;
eloop_cancel_timeout(pmksa_cache_expire, pmksa, NULL);
if (pmksa->pmksa == NULL)
return;
- os_get_time(&now);
+ os_get_reltime(&now);
sec = pmksa->pmksa->expiration - now.sec;
if (sec < 0)
sec = 0;
}
}
+ if (eapol->radius_cui)
+ entry->cui = wpabuf_dup(eapol->radius_cui);
+
#ifndef CONFIG_NO_RADIUS
radius_copy_class(&entry->radius_class, &eapol->radius_class);
#endif /* CONFIG_NO_RADIUS */
entry->eap_type_authsrv = eapol->eap_type_authsrv;
entry->vlan_id = ((struct sta_info *) eapol->sta)->vlan_id;
+
+ entry->acct_multi_session_id_hi = eapol->acct_multi_session_id_hi;
+ entry->acct_multi_session_id_lo = eapol->acct_multi_session_id_lo;
}
eapol->identity, eapol->identity_len);
}
+ if (entry->cui) {
+ wpabuf_free(eapol->radius_cui);
+ eapol->radius_cui = wpabuf_dup(entry->cui);
+ }
+
#ifndef CONFIG_NO_RADIUS
radius_free_class(&eapol->radius_class);
radius_copy_class(&eapol->radius_class, &entry->radius_class);
eapol->eap_type_authsrv = entry->eap_type_authsrv;
((struct sta_info *) eapol->sta)->vlan_id = entry->vlan_id;
+
+ eapol->acct_multi_session_id_hi = entry->acct_multi_session_id_hi;
+ eapol->acct_multi_session_id_lo = entry->acct_multi_session_id_lo;
}
struct rsn_pmksa_cache_entry *entry)
{
struct rsn_pmksa_cache_entry *pos, *prev;
+ int hash;
/* Add the new entry; order by expiration time */
pos = pmksa->pmksa;
entry->next = prev->next;
prev->next = entry;
}
- entry->hnext = pmksa->pmkid[PMKID_HASH(entry->pmkid)];
- pmksa->pmkid[PMKID_HASH(entry->pmkid)] = entry;
+
+ hash = PMKID_HASH(entry->pmkid);
+ entry->hnext = pmksa->pmkid[hash];
+ pmksa->pmkid[hash] = entry;
pmksa->pmksa_count++;
+ if (prev == NULL)
+ pmksa_cache_set_expiration(pmksa);
wpa_printf(MSG_DEBUG, "RSN: added PMKSA cache entry for " MACSTR,
MAC2STR(entry->spa));
wpa_hexdump(MSG_DEBUG, "RSN: added PMKID", entry->pmkid, PMKID_LEN);
* @pmksa: Pointer to PMKSA cache data from pmksa_cache_auth_init()
* @pmk: The new pairwise master key
* @pmk_len: PMK length in bytes, usually PMK_LEN (32)
+ * @kck: Key confirmation key or %NULL if not yet derived
+ * @kck_len: KCK length in bytes
* @aa: Authenticator address
* @spa: Supplicant address
* @session_timeout: Session timeout
struct rsn_pmksa_cache_entry *
pmksa_cache_auth_add(struct rsn_pmksa_cache *pmksa,
const u8 *pmk, size_t pmk_len,
- const u8 *aa, const u8 *spa, int session_timeout,
- struct eapol_state_machine *eapol, int akmp)
+ const u8 *kck, size_t kck_len,
+ const u8 *aa, const u8 *spa, int session_timeout,
+ struct eapol_state_machine *eapol, int akmp)
{
struct rsn_pmksa_cache_entry *entry, *pos;
- struct os_time now;
+ struct os_reltime now;
if (pmk_len > PMK_LEN)
return NULL;
+ if (wpa_key_mgmt_suite_b(akmp) && !kck)
+ return NULL;
+
entry = os_zalloc(sizeof(*entry));
if (entry == NULL)
return NULL;
os_memcpy(entry->pmk, pmk, pmk_len);
entry->pmk_len = pmk_len;
- rsn_pmkid(pmk, pmk_len, aa, spa, entry->pmkid,
- wpa_key_mgmt_sha256(akmp));
- os_get_time(&now);
+ if (akmp == WPA_KEY_MGMT_IEEE8021X_SUITE_B_192)
+ rsn_pmkid_suite_b_192(kck, kck_len, aa, spa, entry->pmkid);
+ else if (wpa_key_mgmt_suite_b(akmp))
+ rsn_pmkid_suite_b(kck, kck_len, aa, spa, entry->pmkid);
+ else
+ rsn_pmkid(pmk, pmk_len, aa, spa, entry->pmkid,
+ wpa_key_mgmt_sha256(akmp));
+ os_get_reltime(&now);
entry->expiration = now.sec;
if (session_timeout > 0)
entry->expiration += session_timeout;
old_entry->identity_len);
}
}
+ if (old_entry->cui)
+ entry->cui = wpabuf_dup(old_entry->cui);
#ifndef CONFIG_NO_RADIUS
radius_copy_class(&entry->radius_class, &old_entry->radius_class);
#endif /* CONFIG_NO_RADIUS */
_pmksa_cache_free_entry(prev);
}
eloop_cancel_timeout(pmksa_cache_expire, pmksa, NULL);
+ pmksa->pmksa_count = 0;
+ pmksa->pmksa = NULL;
for (i = 0; i < PMKID_HASH_SIZE; i++)
pmksa->pmkid[i] = NULL;
os_free(pmksa);
{
struct rsn_pmksa_cache_entry *entry;
- if (pmkid)
- entry = pmksa->pmkid[PMKID_HASH(pmkid)];
- else
- entry = pmksa->pmksa;
- while (entry) {
- if ((spa == NULL ||
- os_memcmp(entry->spa, spa, ETH_ALEN) == 0) &&
- (pmkid == NULL ||
- os_memcmp(entry->pmkid, pmkid, PMKID_LEN) == 0))
- return entry;
- entry = pmkid ? entry->hnext : entry->next;
+ if (pmkid) {
+ for (entry = pmksa->pmkid[PMKID_HASH(pmkid)]; entry;
+ entry = entry->hnext) {
+ if ((spa == NULL ||
+ os_memcmp(entry->spa, spa, ETH_ALEN) == 0) &&
+ os_memcmp(entry->pmkid, pmkid, PMKID_LEN) == 0)
+ return entry;
+ }
+ } else {
+ for (entry = pmksa->pmksa; entry; entry = entry->next) {
+ if (spa == NULL ||
+ os_memcmp(entry->spa, spa, ETH_ALEN) == 0)
+ return entry;
+ }
}
+
return NULL;
}
struct rsn_pmksa_cache_entry *entry;
u8 new_pmkid[PMKID_LEN];
- entry = pmksa->pmksa;
- while (entry) {
+ for (entry = pmksa->pmksa; entry; entry = entry->next) {
if (os_memcmp(entry->spa, spa, ETH_ALEN) != 0)
continue;
rsn_pmkid(entry->pmk, entry->pmk_len, aa, spa, new_pmkid,
wpa_key_mgmt_sha256(entry->akmp));
if (os_memcmp(new_pmkid, pmkid, PMKID_LEN) == 0)
return entry;
- entry = entry->next;
}
return NULL;
}
return pmksa;
}
+
+
+static int das_attr_match(struct rsn_pmksa_cache_entry *entry,
+ struct radius_das_attrs *attr)
+{
+ int match = 0;
+
+ if (attr->sta_addr) {
+ if (os_memcmp(attr->sta_addr, entry->spa, ETH_ALEN) != 0)
+ return 0;
+ match++;
+ }
+
+ if (attr->acct_multi_session_id) {
+ char buf[20];
+
+ if (attr->acct_multi_session_id_len != 17)
+ return 0;
+ os_snprintf(buf, sizeof(buf), "%08X+%08X",
+ entry->acct_multi_session_id_hi,
+ entry->acct_multi_session_id_lo);
+ if (os_memcmp(attr->acct_multi_session_id, buf, 17) != 0)
+ return 0;
+ match++;
+ }
+
+ if (attr->cui) {
+ if (!entry->cui ||
+ attr->cui_len != wpabuf_len(entry->cui) ||
+ os_memcmp(attr->cui, wpabuf_head(entry->cui),
+ attr->cui_len) != 0)
+ return 0;
+ match++;
+ }
+
+ if (attr->user_name) {
+ if (!entry->identity ||
+ attr->user_name_len != entry->identity_len ||
+ os_memcmp(attr->user_name, entry->identity,
+ attr->user_name_len) != 0)
+ return 0;
+ match++;
+ }
+
+ return match;
+}
+
+
+int pmksa_cache_auth_radius_das_disconnect(struct rsn_pmksa_cache *pmksa,
+ struct radius_das_attrs *attr)
+{
+ int found = 0;
+ struct rsn_pmksa_cache_entry *entry, *prev;
+
+ if (attr->acct_session_id)
+ return -1;
+
+ entry = pmksa->pmksa;
+ while (entry) {
+ if (das_attr_match(entry, attr)) {
+ found++;
+ prev = entry;
+ entry = entry->next;
+ pmksa_cache_free_entry(pmksa, prev);
+ continue;
+ }
+ entry = entry->next;
+ }
+
+ return found ? 0 : -1;
+}
projects / mech_eap.git / blobdiff