[PATCH 37/44] FT: add session_timeout to push/resp
michael-dev at fami-braun.de
michael-dev at fami-braun.de
Wed Feb 24 03:53:43 PST 2016
From: Michael Braun <michael-dev at fami-braun.de>
This ensures a session timeout configured on R0 either using RADIUS-based
ACL or 802.1X authentication is copied over to the new R1.
As the session can be moved at any time, a timestamp needs to be kept so
the remaining session time can be computed by R0 when requested.
Signed-off-by: Michael Braun <michael-dev at fami-braun.de>
---
src/ap/ieee802_11.c | 9 ++-
src/ap/ieee802_1x.c | 16 +++--
src/ap/sta_info.h | 3 +-
src/ap/wpa_auth.h | 9 ++-
src/ap/wpa_auth_ft.c | 163 ++++++++++++++++++++++++++++++++++++++-----------
src/ap/wpa_auth_glue.c | 49 +++++++++++++++
6 files changed, 204 insertions(+), 45 deletions(-)
diff --git a/src/ap/ieee802_11.c b/src/ap/ieee802_11.c
index 0486923..2bbbf99 100644
--- a/src/ap/ieee802_11.c
+++ b/src/ap/ieee802_11.c
@@ -970,10 +970,15 @@ int handle_auth_cfg_sta(struct hostapd_data *hapd, struct sta_info *sta,
info->acct_interim_interval)
sta->acct_interim_interval = info->acct_interim_interval;
- if (res == HOSTAPD_ACL_ACCEPT_TIMEOUT)
+ if (res == HOSTAPD_ACL_ACCEPT_TIMEOUT) {
+ sta->session_timeout_set = 1;
+ os_get_reltime(&sta->session_timeout);
+ sta->session_timeout.sec += info->session_timeout;
ap_sta_session_timeout(hapd, sta, info->session_timeout);
- else
+ } else {
+ sta->session_timeout_set = 0;
ap_sta_no_session_timeout(hapd, sta);
+ }
return 0;
}
diff --git a/src/ap/ieee802_1x.c b/src/ap/ieee802_1x.c
index c774d5c..f28ada8 100644
--- a/src/ap/ieee802_1x.c
+++ b/src/ap/ieee802_1x.c
@@ -1751,14 +1751,17 @@ ieee802_1x_receive_auth(struct radius_msg *msg, struct radius_msg *req,
break;
sta->session_timeout_set = !!session_timeout_set;
- sta->session_timeout = session_timeout;
+ os_get_reltime(&sta->session_timeout);
+ sta->session_timeout.sec += session_timeout;
/* RFC 3580, Ch. 3.17 */
if (session_timeout_set && termination_action ==
RADIUS_TERMINATION_ACTION_RADIUS_REQUEST) {
sm->reAuthPeriod = session_timeout;
- } else if (session_timeout_set)
+ } else if (session_timeout_set) {
ap_sta_session_timeout(hapd, sta, session_timeout);
+ } else
+ ap_sta_no_session_timeout(hapd, sta);
sm->eap_if->aaaSuccess = TRUE;
override_eapReq = 1;
@@ -2618,6 +2621,7 @@ static void ieee802_1x_finished(struct hostapd_data *hapd,
/* TODO: get PMKLifetime from WPA parameters */
static const int dot11RSNAConfigPMKLifetime = 43200;
unsigned int session_timeout;
+ struct os_reltime now, remaining;
#ifdef CONFIG_HS20
if (remediation && !sta->remediation) {
@@ -2638,9 +2642,11 @@ static void ieee802_1x_finished(struct hostapd_data *hapd,
#endif /* CONFIG_HS20 */
key = ieee802_1x_get_key(sta->eapol_sm, &len);
- if (sta->session_timeout_set)
- session_timeout = sta->session_timeout;
- else
+ if (sta->session_timeout_set) {
+ os_get_reltime(&now);
+ os_reltime_sub(&sta->session_timeout, &now, &remaining);
+ session_timeout = (remaining.sec > 0) ? remaining.sec : 1;
+ } else
session_timeout = dot11RSNAConfigPMKLifetime;
if (success && key && len >= PMK_LEN && !sta->remediation &&
!sta->hs20_deauth_requested &&
diff --git a/src/ap/sta_info.h b/src/ap/sta_info.h
index abb207c..8437b84 100644
--- a/src/ap/sta_info.h
+++ b/src/ap/sta_info.h
@@ -178,7 +178,8 @@ struct sta_info {
struct sae_data *sae;
#endif /* CONFIG_SAE */
- u32 session_timeout; /* valid only if session_timeout_set == 1 */
+ /* valid only if session_timeout_set == 1 */
+ struct os_reltime session_timeout;
/* Last Authentication/(Re)Association Request/Action frame sequence
* control */
diff --git a/src/ap/wpa_auth.h b/src/ap/wpa_auth.h
index 3b27760..63178c9 100644
--- a/src/ap/wpa_auth.h
+++ b/src/ap/wpa_auth.h
@@ -82,7 +82,7 @@ struct ft_r0kh_r1kh_pull_frame {
FT_R1KH_ID_LEN + ETH_ALEN + PMK_LEN + \
WPA_PMK_NAME_LEN + 2 + 2 + \
FT_VLAN_DATA_LEN + 1 + FT_IDENTITY_LEN + \
- 1 + FT_RADIUS_CUI_LEN)
+ 1 + FT_RADIUS_CUI_LEN + 4)
#define FT_R0KH_R1KH_RESP_PAD_LEN (8 - FT_R0KH_R1KH_RESP_DATA_LEN % 8)
struct ft_r0kh_r1kh_resp_frame {
u8 frame_type; /* RSN_REMOTE_FRAME_TYPE_FT_RRB */
@@ -102,6 +102,7 @@ struct ft_r0kh_r1kh_resp_frame {
u8 identity[FT_IDENTITY_LEN];
u8 radius_cui_len;
u8 radius_cui[FT_RADIUS_CUI_LEN];
+ le32 session_timeout;
u8 pad[FT_R0KH_R1KH_RESP_PAD_LEN]; /* 8-octet boundary for AES block */
u8 key_wrap_extra[8];
} STRUCT_PACKED;
@@ -110,7 +111,7 @@ struct ft_r0kh_r1kh_resp_frame {
WPA_PMK_NAME_LEN + PMK_LEN + \
WPA_PMK_NAME_LEN + 2 + 2 + \
FT_VLAN_DATA_LEN + 1 + FT_IDENTITY_LEN + \
- 1 + FT_RADIUS_CUI_LEN)
+ 1 + FT_RADIUS_CUI_LEN + 4)
#define FT_R0KH_R1KH_PUSH_PAD_LEN (8 - FT_R0KH_R1KH_PUSH_DATA_LEN % 8)
struct ft_r0kh_r1kh_push_frame {
u8 frame_type; /* RSN_REMOTE_FRAME_TYPE_FT_RRB */
@@ -133,6 +134,7 @@ struct ft_r0kh_r1kh_push_frame {
u8 identity[FT_IDENTITY_LEN];
u8 radius_cui_len;
u8 radius_cui[FT_RADIUS_CUI_LEN];
+ le32 session_timeout;
u8 pad[FT_R0KH_R1KH_PUSH_PAD_LEN]; /* 8-octet boundary for AES block */
u8 key_wrap_extra[8];
} STRUCT_PACKED;
@@ -270,10 +272,13 @@ struct wpa_auth_callbacks {
size_t buflen);
size_t (*get_radius_cui)(void *ctx, const u8 *sta_addr, u8 *buf,
size_t buflen);
+ int (*get_session_timeout)(void *ctx, const u8 *sta_addr);
void (*set_identity)(void *ctx, const u8 *sta_addr, u8 *identity,
size_t identity_len);
void (*set_radius_cui)(void *ctx, const u8 *sta_addr, u8 *radius_cui,
size_t radius_cui_len);
+ void (*set_session_timeout)(void *ctx, const u8 *sta_addr,
+ int session_timeout);
int (*send_ft_action)(void *ctx, const u8 *dst,
const u8 *data, size_t data_len);
diff --git a/src/ap/wpa_auth_ft.c b/src/ap/wpa_auth_ft.c
index 2f68d45..beeeca7 100644
--- a/src/ap/wpa_auth_ft.c
+++ b/src/ap/wpa_auth_ft.c
@@ -103,6 +103,16 @@ wpa_ft_get_vlan(struct wpa_authenticator *wpa_auth, const u8 *sta_addr,
}
+static int
+wpa_ft_get_session_timeout(struct wpa_authenticator *wpa_auth,
+ const u8 *sta_addr)
+{
+ if (wpa_auth->cb.get_session_timeout == NULL)
+ return 0;
+ return wpa_auth->cb.get_session_timeout(wpa_auth->cb.ctx, sta_addr);
+}
+
+
static size_t
wpa_ft_get_identity(struct wpa_authenticator *wpa_auth, const u8 *sta_addr,
u8 *buf, size_t buflen)
@@ -126,6 +136,17 @@ wpa_ft_get_radius_cui(struct wpa_authenticator *wpa_auth, const u8 *sta_addr,
static void
+wpa_ft_set_session_timeout(struct wpa_authenticator *wpa_auth,
+ const u8 *sta_addr, int session_timeout)
+{
+ if (wpa_auth->cb.set_session_timeout == NULL)
+ return;
+ wpa_auth->cb.set_session_timeout(wpa_auth->cb.ctx, sta_addr,
+ session_timeout);
+}
+
+
+static void
wpa_ft_set_identity(struct wpa_authenticator *wpa_auth, const u8 *sta_addr,
u8 *identity, size_t identity_len)
{
@@ -241,7 +262,8 @@ struct wpa_ft_pmk_r0_sa {
u8 identity_len;
u8 radius_cui[FT_RADIUS_CUI_LEN];
u8 radius_cui_len;
- /* TODO: radius_class, EAP type, expiration from EAPOL */
+ os_time_t session_timeout; /* 0 for no expiration */
+ /* TODO: radius_class, EAP type */
int pmk_r1_pushed;
};
@@ -256,7 +278,8 @@ struct wpa_ft_pmk_r1_sa {
u8 identity_len;
u8 radius_cui[FT_RADIUS_CUI_LEN];
u8 radius_cui_len;
- /* TODO: expiration from EAPOL, radius_class, EAP type */
+ os_time_t session_timeout; /* 0 for no expiration */
+ /* TODO: radius_class, EAP type */
};
struct wpa_ft_pmk_cache {
@@ -288,6 +311,7 @@ static void wpa_ft_expire_pmk_r0(void *eloop_ctx, void *timeout_ctx)
struct wpa_ft_pmk_r0_sa *r0 = eloop_ctx;
struct os_reltime now;
int expiresIn;
+ int session_timeout;
os_get_reltime(&now);
@@ -295,13 +319,23 @@ static void wpa_ft_expire_pmk_r0(void *eloop_ctx, void *timeout_ctx)
return;
expiresIn = r0->expiration - now.sec;
- if (expiresIn > 0) {
+ session_timeout = r0->session_timeout - now.sec;
+ /* conditions to remove from cache:
+ * a) r0->expiration is set and hit
+ * -or-
+ * b) r0->session_timeout is set and hit
+ */
+ if ((!r0->expiration || expiresIn > 0) &&
+ (!r0->session_timeout || session_timeout > 0)) {
wpa_printf(MSG_ERROR, "FT: wpa_ft_expire_pmk_r0 called for "
- "non-expired entry %p, delete in %ds",
- r0, expiresIn);
+ "non-expired entry %p", r0);
eloop_cancel_timeout(wpa_ft_expire_pmk_r0, r0, NULL);
- eloop_register_timeout(expiresIn + 1, 0,
- wpa_ft_expire_pmk_r0, r0, NULL);
+ if (r0->expiration && expiresIn > 0)
+ eloop_register_timeout(expiresIn + 1, 0,
+ wpa_ft_expire_pmk_r0, r0, NULL);
+ if (r0->session_timeout && session_timeout > 0)
+ eloop_register_timeout(session_timeout + 1, 0,
+ wpa_ft_expire_pmk_r0, r0, NULL);
return;
}
@@ -365,7 +399,7 @@ static int wpa_ft_store_pmk_r0(struct wpa_authenticator *wpa_auth,
const u8 *spa, const u8 *pmk_r0,
const u8 *pmk_r0_name, int pairwise,
const struct ft_vlan vlan,
- const int expiresIn,
+ const int expiresIn, const int session_timeout,
const u8 *identity, u8 identity_len,
const u8 *radius_cui, u8 radius_cui_len)
{
@@ -395,12 +429,17 @@ static int wpa_ft_store_pmk_r0(struct wpa_authenticator *wpa_auth,
os_memcpy(r0->radius_cui, radius_cui, radius_cui_len);
r0->radius_cui_len = radius_cui_len;
}
+ if (session_timeout > 0)
+ r0->session_timeout = now.sec + session_timeout;
dl_list_add(&cache->pmk_r0, &r0->list);
if (expiresIn > 0)
eloop_register_timeout(expiresIn + 1, 0,
wpa_ft_expire_pmk_r0, r0, NULL);
+ if (session_timeout > 0)
+ eloop_register_timeout(session_timeout + 1, 0,
+ wpa_ft_expire_pmk_r0, r0, NULL);
return 0;
}
@@ -414,8 +453,9 @@ static int wpa_ft_fetch_pmk_r0(struct wpa_authenticator *wpa_auth,
const u8 *spa, const u8 *pmk_r0_name,
u8 *pmk_r0, int *pairwise,
struct ft_vlan *vlan, int *expiresIn,
- u8 *identity, u8 *identity_len,
- u8 *radius_cui, u8 *radius_cui_len)
+ int *session_timeout, u8 *identity,
+ u8 *identity_len, u8 *radius_cui,
+ u8 *radius_cui_len)
{
struct wpa_ft_pmk_cache *cache = wpa_auth->ft_pmk_cache;
struct wpa_ft_pmk_r0_sa *r0;
@@ -447,6 +487,13 @@ static int wpa_ft_fetch_pmk_r0(struct wpa_authenticator *wpa_auth,
r0->radius_cui_len);
*radius_cui_len = r0->radius_cui_len;
}
+ if (session_timeout && r0->session_timeout > now.sec)
+ *session_timeout = r0->session_timeout -
+ now.sec;
+ else if (session_timeout && r0->session_timeout)
+ *session_timeout = 1;
+ else
+ *session_timeout = 0;
return 0;
}
@@ -460,14 +507,16 @@ static int wpa_ft_store_pmk_r1(struct wpa_authenticator *wpa_auth,
const u8 *spa, const u8 *pmk_r1,
const u8 *pmk_r1_name, int pairwise,
const struct ft_vlan vlan,
- int expiresIn,
+ int expiresIn, const int session_timeout,
const u8 *identity, u8 identity_len,
const u8 *radius_cui, u8 radius_cui_len)
{
struct wpa_ft_pmk_cache *cache = wpa_auth->ft_pmk_cache;
struct wpa_ft_pmk_r1_sa *r1;
+ struct os_reltime now;
/* TODO: add expiration and limit on number of entries in cache */
+ os_get_reltime(&now);
r1 = os_zalloc(sizeof(*r1));
if (r1 == NULL)
@@ -486,12 +535,17 @@ static int wpa_ft_store_pmk_r1(struct wpa_authenticator *wpa_auth,
os_memcpy(r1->radius_cui, radius_cui, radius_cui_len);
r1->radius_cui_len = radius_cui_len;
}
+ if (session_timeout > 0)
+ r1->session_timeout = now.sec + session_timeout;
dl_list_add(&cache->pmk_r1, &r1->list);
if (expiresIn > 0)
eloop_register_timeout(expiresIn + 1, 0,
wpa_ft_expire_pmk_r1, r1, NULL);
+ if (session_timeout > 0)
+ eloop_register_timeout(session_timeout + 1, 0,
+ wpa_ft_expire_pmk_r1, r1, NULL);
return 0;
}
@@ -500,12 +554,15 @@ static int wpa_ft_store_pmk_r1(struct wpa_authenticator *wpa_auth,
static int wpa_ft_fetch_pmk_r1(struct wpa_authenticator *wpa_auth,
const u8 *spa, const u8 *pmk_r1_name,
u8 *pmk_r1, int *pairwise,
- struct ft_vlan *vlan,
+ struct ft_vlan *vlan, int *session_timeout,
u8 *identity, u8 *identity_len,
u8 *radius_cui, u8 *radius_cui_len)
{
struct wpa_ft_pmk_cache *cache = wpa_auth->ft_pmk_cache;
struct wpa_ft_pmk_r1_sa *r1;
+ struct os_reltime now;
+
+ os_get_reltime(&now);
dl_list_for_each(r1, &cache->pmk_r1, struct wpa_ft_pmk_r1_sa, list) {
if (os_memcmp(r1->spa, spa, ETH_ALEN) == 0 &&
@@ -526,6 +583,13 @@ static int wpa_ft_fetch_pmk_r1(struct wpa_authenticator *wpa_auth,
r1->radius_cui_len);
*radius_cui_len = r1->radius_cui_len;
}
+ if (session_timeout && r1->session_timeout > now.sec)
+ *session_timeout = r1->session_timeout -
+ now.sec;
+ else if (session_timeout && r1->session_timeout)
+ *session_timeout = 1;
+ else
+ *session_timeout = 0;
return 0;
}
}
@@ -778,6 +842,7 @@ int wpa_auth_derive_ptk_ft(struct wpa_state_machine *sm, const u8 *pmk,
struct ft_vlan vlan;
u8 identity[FT_IDENTITY_LEN], radius_cui[FT_RADIUS_CUI_LEN];
int identity_len, radius_cui_len;
+ int session_timeout;
if (sm->xxkey_len == 0) {
wpa_printf(MSG_DEBUG, "FT: XXKey not available for key "
@@ -794,6 +859,7 @@ int wpa_auth_derive_ptk_ft(struct wpa_state_machine *sm, const u8 *pmk,
sizeof(identity));
radius_cui_len = wpa_ft_get_radius_cui(sm->wpa_auth, sm->addr,
radius_cui, sizeof(radius_cui));
+ session_timeout = wpa_ft_get_session_timeout(sm->wpa_auth, sm->addr);
wpa_derive_pmk_r0(sm->xxkey, sm->xxkey_len, ssid, ssid_len, mdid,
r0kh, r0kh_len, sm->addr, pmk_r0, pmk_r0_name);
@@ -802,8 +868,8 @@ int wpa_auth_derive_ptk_ft(struct wpa_state_machine *sm, const u8 *pmk,
if (!psk_local || !wpa_key_mgmt_ft_psk(sm->wpa_key_mgmt))
wpa_ft_store_pmk_r0(sm->wpa_auth, sm->addr, pmk_r0,
pmk_r0_name, sm->pairwise, vlan, expiresIn,
- identity, identity_len, radius_cui,
- radius_cui_len);
+ session_timeout, identity, identity_len,
+ radius_cui, radius_cui_len);
wpa_derive_pmk_r1(pmk_r0, pmk_r0_name, r1kh, sm->addr,
pmk_r1, sm->pmk_r1_name);
@@ -813,8 +879,8 @@ int wpa_auth_derive_ptk_ft(struct wpa_state_machine *sm, const u8 *pmk,
if (!psk_local || !wpa_key_mgmt_ft_psk(sm->wpa_key_mgmt))
wpa_ft_store_pmk_r1(sm->wpa_auth, sm->addr, pmk_r1,
sm->pmk_r1_name, sm->pairwise, vlan,
- expiresIn, identity, identity_len,
- radius_cui, radius_cui_len);
+ expiresIn, session_timeout, identity,
+ identity_len, radius_cui, radius_cui_len);
return wpa_pmk_r1_to_ptk(pmk_r1, sm->SNonce, sm->ANonce, sm->addr,
sm->wpa_auth->addr, sm->pmk_r1_name,
@@ -1223,7 +1289,7 @@ static int wpa_ft_psk_pmk_r1(struct wpa_state_machine *sm,
u8 *out_pmk_r1, int *out_pairwise,
struct ft_vlan *out_vlan, u8 *out_identity,
u8 *out_identity_len, u8 *out_radius_cui,
- u8 *out_radius_cui_len)
+ u8 *out_radius_cui_len, int *out_session_timeout)
{
const u8 *pmk = NULL;
u8 pmk_r0[PMK_LEN], pmk_r0_name[WPA_PMK_NAME_LEN];
@@ -1237,6 +1303,7 @@ static int wpa_ft_psk_pmk_r1(struct wpa_state_machine *sm,
size_t ssid_len = wpa_auth->conf.ssid_len;
int pairwise;
u8 len;
+ int timeout;
pairwise = sm->pairwise;
@@ -1279,6 +1346,11 @@ static int wpa_ft_psk_pmk_r1(struct wpa_state_machine *sm,
FT_RADIUS_CUI_LEN);
*out_radius_cui_len = len;
}
+ if (out_session_timeout) {
+ timeout = wpa_ft_get_session_timeout(sm->wpa_auth,
+ sm->addr);
+ *out_session_timeout = timeout;
+ }
return 0;
}
@@ -1339,7 +1411,7 @@ static int wpa_ft_process_auth_req(struct wpa_state_machine *sm,
size_t buflen;
int ret;
u8 *pos, *end;
- int pairwise;
+ int pairwise, session_timeout;
struct ft_vlan vlan;
u8 identity[FT_IDENTITY_LEN], radius_cui[FT_RADIUS_CUI_LEN];
u8 identity_len = 0, radius_cui_len = 0;
@@ -1405,12 +1477,13 @@ static int wpa_ft_process_auth_req(struct wpa_state_machine *sm,
wpa_key_mgmt_ft_psk(sm->wpa_key_mgmt)) {
if (wpa_ft_psk_pmk_r1(sm, pmk_r1_name, pmk_r1, &pairwise,
&vlan, identity, &identity_len,
- radius_cui, &radius_cui_len) < 0)
+ radius_cui, &radius_cui_len,
+ &session_timeout) < 0)
return WLAN_STATUS_INVALID_PMKID;
} else
if (wpa_ft_fetch_pmk_r1(sm->wpa_auth, sm->addr, pmk_r1_name, pmk_r1,
- &pairwise, &vlan, identity, &identity_len, radius_cui,
- &radius_cui_len) < 0) {
+ &pairwise, &vlan, &session_timeout, identity, &identity_len,
+ radius_cui, &radius_cui_len) < 0) {
if (wpa_ft_pull_pmk_r1(sm, ies, ies_len, parse.rsn_pmkid) < 0) {
wpa_printf(MSG_DEBUG, "FT: Did not have matching "
"PMK-R1 and unknown R0KH-ID");
@@ -1458,6 +1531,7 @@ static int wpa_ft_process_auth_req(struct wpa_state_machine *sm,
wpa_ft_set_identity(sm->wpa_auth, sm->addr, identity, identity_len);
wpa_ft_set_radius_cui(sm->wpa_auth, sm->addr, radius_cui,
radius_cui_len);
+ wpa_ft_set_session_timeout(sm->wpa_auth, sm->addr, session_timeout);
buflen = 2 + sizeof(struct rsn_mdie) + 2 + sizeof(struct rsn_ftie) +
2 + FT_R1KH_ID_LEN + 200;
@@ -1921,8 +1995,7 @@ static int wpa_ft_rrb_rx_pull(struct wpa_authenticator *wpa_auth,
struct ft_remote_r1kh *r1kh, *r1kh_wildcard = NULL;
struct ft_r0kh_r1kh_resp_frame resp, r;
u8 pmk_r0[PMK_LEN];
- int pairwise;
- int expiresIn;
+ int pairwise, expiresIn, session_timeout;
wpa_printf(MSG_DEBUG, "FT: Received PMK-R1 pull");
@@ -1993,7 +2066,7 @@ static int wpa_ft_rrb_rx_pull(struct wpa_authenticator *wpa_auth,
os_memcpy(r.s1kh_id, f.s1kh_id, ETH_ALEN);
if (wpa_ft_fetch_pmk_r0(wpa_auth, f.s1kh_id, f.pmk_r0_name, pmk_r0,
&pairwise, &r.vlan, &expiresIn,
- r.identity, &r.identity_len,
+ &session_timeout, r.identity, &r.identity_len,
r.radius_cui, &r.radius_cui_len) < 0) {
wpa_printf(MSG_DEBUG, "FT: No matching PMKR0Name found for "
"PMK-R1 pull");
@@ -2011,8 +2084,11 @@ static int wpa_ft_rrb_rx_pull(struct wpa_authenticator *wpa_auth,
wpa_printf(MSG_DEBUG, "FT: PMK-R1 - vlan %d%s",
le_to_host16(r.vlan.untagged),
r.vlan.tagged[0] ? "+" : "");
+ wpa_printf(MSG_DEBUG, "FT: PMK-R1 - session_timeout %d",
+ session_timeout);
r.pairwise = host_to_le16(pairwise);
r.expiresIn = host_to_le16(expiresIn);
+ r.session_timeout = host_to_le32(session_timeout);
}
os_memset(r.pad, 0, sizeof(r.pad));
@@ -2111,8 +2187,7 @@ static int wpa_ft_rrb_rx_resp(struct wpa_authenticator *wpa_auth,
const u8 *crypt;
u8 *plain;
struct ft_remote_r0kh *r0kh, *r0kh_wildcard = NULL;
- int pairwise, res;
- int expiresIn;
+ int pairwise, res, expiresIn, session_timeout;
struct ft_pull_resp_cb_ctx ctx;
int maxExpiresIn = wpa_auth->conf.r0_key_lifetime * 60;
@@ -2172,6 +2247,7 @@ static int wpa_ft_rrb_rx_resp(struct wpa_authenticator *wpa_auth,
MAC2STR(f.r1kh_id), MAC2STR(f.s1kh_id));
} else {
expiresIn = le_to_host16(f.expiresIn);
+ session_timeout = le_to_host32(f.session_timeout);
wpa_hexdump(MSG_DEBUG, "FT: PMK-R1 pull - nonce",
f.nonce, sizeof(f.nonce));
wpa_printf(MSG_DEBUG, "FT: PMK-R1 pull - R1KH-ID=" MACSTR
@@ -2184,6 +2260,8 @@ static int wpa_ft_rrb_rx_resp(struct wpa_authenticator *wpa_auth,
f.pmk_r1_name, WPA_PMK_NAME_LEN);
wpa_hexdump(MSG_DEBUG, "FT: PMK-R1 pull - Identity",
f.identity, f.identity_len);
+ wpa_printf(MSG_DEBUG, "FT: PMK-R1 pull - session_timeout %d",
+ session_timeout);
wpa_hexdump(MSG_DEBUG, "FT: PMK-R1 pull - Cui",
f.radius_cui, f.radius_cui_len);
wpa_printf(MSG_DEBUG, "FT: PMK-R1 pull - vlan %d%s",
@@ -2194,7 +2272,7 @@ static int wpa_ft_rrb_rx_resp(struct wpa_authenticator *wpa_auth,
expiresIn = maxExpiresIn;
res = wpa_ft_store_pmk_r1(wpa_auth, f.s1kh_id, f.pmk_r1,
f.pmk_r1_name, pairwise, f.vlan,
- expiresIn,
+ expiresIn, session_timeout,
f.identity, f.identity_len,
f.radius_cui, f.radius_cui_len);
}
@@ -2222,8 +2300,7 @@ static int wpa_ft_rrb_rx_push(struct wpa_authenticator *wpa_auth,
struct ft_remote_r0kh *r0kh, *r0kh_wildcard = NULL;
struct os_time now;
os_time_t tsend;
- int pairwise;
- int expiresIn;
+ int pairwise, expiresIn, session_timeout;
int maxExpiresIn = wpa_auth->conf.r0_key_lifetime * 60;
wpa_printf(MSG_DEBUG, "FT: Received PMK-R1 push");
@@ -2287,6 +2364,7 @@ static int wpa_ft_rrb_rx_push(struct wpa_authenticator *wpa_auth,
pairwise = le_to_host16(f.pairwise);
expiresIn = le_to_host16(f.expiresIn);
+ session_timeout = le_to_host16(f.session_timeout);
wpa_printf(MSG_DEBUG, "FT: PMK-R1 push - R1KH-ID=" MACSTR " S1KH-ID="
MACSTR " pairwise=0x%x expiresIn=%d",
MAC2STR(f.r1kh_id), MAC2STR(f.s1kh_id), pairwise, expiresIn);
@@ -2296,6 +2374,8 @@ static int wpa_ft_rrb_rx_push(struct wpa_authenticator *wpa_auth,
f.pmk_r1_name, WPA_PMK_NAME_LEN);
wpa_hexdump(MSG_DEBUG, "FT: PMK-R1 push - Identity",
f.identity, f.identity_len);
+ wpa_printf(MSG_DEBUG, "FT: PMK-R1 push - session_timeout %d",
+ session_timeout);
wpa_hexdump(MSG_DEBUG, "FT: PMK-R1 push - Cui",
f.radius_cui, f.radius_cui_len);
wpa_printf(MSG_DEBUG, "FT: PMK-R1 push - vlan %d%s",
@@ -2305,8 +2385,9 @@ static int wpa_ft_rrb_rx_push(struct wpa_authenticator *wpa_auth,
if (expiresIn <= 0 || expiresIn > maxExpiresIn)
expiresIn = maxExpiresIn;
wpa_ft_store_pmk_r1(wpa_auth, f.s1kh_id, f.pmk_r1, f.pmk_r1_name,
- pairwise, f.vlan, expiresIn, f.identity,
- f.identity_len, f.radius_cui, f.radius_cui_len);
+ pairwise, f.vlan, expiresIn, session_timeout,
+ f.identity, f.identity_len, f.radius_cui,
+ f.radius_cui_len);
os_memset(f.pmk_r1, 0, PMK_LEN);
return 0;
@@ -2442,7 +2523,7 @@ static void wpa_ft_generate_pmk_r1(struct wpa_authenticator *wpa_auth,
struct wpa_ft_pmk_r0_sa *pmk_r0,
struct ft_remote_r1kh *r1kh,
const u8 *s1kh_id, int pairwise,
- int expiresIn)
+ int expiresIn, int session_timeout)
{
struct ft_r0kh_r1kh_push_frame frame, f;
struct os_time now;
@@ -2475,6 +2556,7 @@ static void wpa_ft_generate_pmk_r1(struct wpa_authenticator *wpa_auth,
f.identity_len = pmk_r0->identity_len;
os_memcpy(f.radius_cui, pmk_r0->radius_cui, pmk_r0->radius_cui_len);
f.radius_cui_len = pmk_r0->radius_cui_len;
+ f.session_timeout = host_to_le32(session_timeout);
os_memset(f.pad, 0, sizeof(f.pad));
plain = ((const u8 *) &f) + offsetof(struct ft_r0kh_r1kh_push_frame,
timestamp);
@@ -2495,7 +2577,7 @@ void wpa_ft_push_pmk_r1(struct wpa_authenticator *wpa_auth, const u8 *addr)
struct wpa_ft_pmk_r0_sa *r0, *r0found = NULL;
struct ft_remote_r1kh *r1kh;
struct os_reltime now;
- int expiresIn;
+ int expiresIn, session_timeout;
if (!wpa_auth->conf.pmk_r1_push)
return;
@@ -2514,7 +2596,18 @@ void wpa_ft_push_pmk_r1(struct wpa_authenticator *wpa_auth, const u8 *addr)
return;
r0->pmk_r1_pushed = 1;
os_get_reltime(&now);
- expiresIn = r0->expiration - now.sec;
+ if (r0->expiration > 0 && r0->expiration > now.sec)
+ expiresIn = r0->expiration > now.sec;
+ else if (r0->expiration)
+ expiresIn = 1;
+ else
+ expiresIn = 0;
+ if (r0->session_timeout > 0 && r0->session_timeout > now.sec)
+ session_timeout = r0->session_timeout > now.sec;
+ else if (r0->session_timeout)
+ session_timeout = 1;
+ else
+ session_timeout = 0;
wpa_printf(MSG_DEBUG, "FT: Deriving and pushing PMK-R1 keys to R1KHs "
"for STA " MACSTR, MAC2STR(addr));
@@ -2524,7 +2617,7 @@ void wpa_ft_push_pmk_r1(struct wpa_authenticator *wpa_auth, const u8 *addr)
is_zero_ether_addr(r1kh->id))
continue;
wpa_ft_generate_pmk_r1(wpa_auth, r0, r1kh, addr, r0->pairwise,
- expiresIn);
+ expiresIn, session_timeout);
}
}
diff --git a/src/ap/wpa_auth_glue.c b/src/ap/wpa_auth_glue.c
index 148367c..7a6fd26 100644
--- a/src/ap/wpa_auth_glue.c
+++ b/src/ap/wpa_auth_glue.c
@@ -765,6 +765,31 @@ hostapd_wpa_auth_get_vlan(void *ctx, const u8 *sta_addr,
}
+static int
+hostapd_wpa_auth_get_session_timeout(void *ctx, const u8 *sta_addr)
+{
+ struct hostapd_data *hapd = ctx;
+ struct sta_info *sta;
+ struct os_reltime now, remaining;
+
+ sta = ap_get_sta(hapd, sta_addr);
+ if (sta == NULL)
+ return 0;
+
+ if (!sta->session_timeout_set)
+ return 0;
+
+ os_get_reltime(&now);
+ if (os_reltime_before(&sta->session_timeout, &now))
+ /* already expired, return >0 as timeout was set */
+ return 1;
+
+ os_reltime_sub(&sta->session_timeout, &now, &remaining);
+
+ return (remaining.sec > 0) ? remaining.sec : 1;
+}
+
+
static size_t
hostapd_wpa_auth_get_identity(void *ctx, const u8 *sta_addr, u8 *buf,
size_t buflen)
@@ -837,6 +862,28 @@ hostapd_wpa_auth_get_radius_cui(void *ctx, const u8 *sta_addr, u8 *buf,
static void
+hostapd_wpa_auth_set_session_timeout(void *ctx, const u8 *sta_addr,
+ int session_timeout)
+{
+ struct hostapd_data *hapd = ctx;
+ struct sta_info *sta;
+
+ sta = ap_get_sta(hapd, sta_addr);
+ if (sta == NULL)
+ return;
+
+ os_get_reltime(&sta->session_timeout);
+ sta->session_timeout.sec += session_timeout;
+ sta->session_timeout_set = !!session_timeout;
+
+ if (sta->session_timeout_set)
+ ap_sta_session_timeout(hapd, sta, session_timeout);
+ else
+ ap_sta_no_session_timeout(hapd, sta);
+}
+
+
+static void
hostapd_wpa_auth_set_identity(void *ctx, const u8 *sta_addr, u8 *identity,
size_t identity_len)
{
@@ -978,8 +1025,10 @@ int hostapd_setup_wpa(struct hostapd_data *hapd)
cb.add_sta = hostapd_wpa_auth_add_sta_auth;
cb.set_vlan = hostapd_wpa_auth_set_vlan;
cb.get_vlan = hostapd_wpa_auth_get_vlan;
+ cb.get_session_timeout = hostapd_wpa_auth_get_session_timeout;
cb.get_identity = hostapd_wpa_auth_get_identity;
cb.get_radius_cui = hostapd_wpa_auth_get_radius_cui;
+ cb.set_session_timeout = hostapd_wpa_auth_set_session_timeout;
cb.set_identity = hostapd_wpa_auth_set_identity;
cb.set_radius_cui = hostapd_wpa_auth_set_radius_cui;
cb.add_tspec = hostapd_wpa_auth_add_tspec;
--
1.9.1
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