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SAE: Use a shared data structure for AP and station 

This makes it easier to share common functions for both roles.

Signed-hostap: Jouni Malinen <j@w1.fi>
This commit is contained in:
Jouni Malinen 2012-12-30 21:48:19 +02:00
parent 05a8d4221d
commit 98efcc4176
6 changed files with 47 additions and 19 deletions
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15
src/ap/ieee802_11.c
View File

@ -17,6 +17,7 @@
#include "common/ieee802_11_defs.h"
#include "common/ieee802_11_common.h"
#include "common/wpa_ctrl.h"
#include "common/sae.h"
#include "radius/radius.h"
#include "radius/radius_client.h"
#include "p2p/p2p.h"
@ -344,8 +345,8 @@ static struct wpabuf * auth_build_sae_confirm(struct hostapd_data *hapd,
if (buf == NULL)
return NULL;
wpabuf_put_le16(buf, sta->sae_send_confirm);
sta->sae_send_confirm++;
wpabuf_put_le16(buf, sta->sae->send_confirm);
sta->sae->send_confirm++;
/* TODO: Confirm */
return buf;
@ -393,6 +394,12 @@ static void handle_auth_sae(struct hostapd_data *hapd, struct sta_info *sta,
u16 resp = WLAN_STATUS_SUCCESS;
struct wpabuf *data;
if (!sta->sae) {
sta->sae = os_zalloc(sizeof(*sta->sae));
if (sta->sae == NULL)
return;
}
if (auth_transaction == 1) {
hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE80211,
HOSTAPD_LEVEL_DEBUG,
@ -401,9 +408,9 @@ static void handle_auth_sae(struct hostapd_data *hapd, struct sta_info *sta,
((u8 *) mgmt) + len -
mgmt->u.auth.variable);
if (resp == WLAN_STATUS_SUCCESS)
sta->sae_state = SAE_COMMIT;
sta->sae->state = SAE_COMMIT;
} else if (auth_transaction == 2) {
if (sta->sae_state != SAE_COMMIT) {
if (sta->sae->state != SAE_COMMIT) {
hostapd_logger(hapd, sta->addr,
HOSTAPD_MODULE_IEEE80211,
HOSTAPD_LEVEL_DEBUG,

4
src/ap/sta_info.c
View File

@ -240,6 +240,10 @@ void ap_free_sta(struct hostapd_data *hapd, struct sta_info *sta)
os_free(sta->identity);
os_free(sta->radius_cui);
#ifdef CONFIG_SAE
os_free(sta->sae);
#endif /* CONFIG_SAE */
os_free(sta);
}

3
src/ap/sta_info.h
View File

@ -127,8 +127,7 @@ struct sta_info {
struct os_time connected_time;
#ifdef CONFIG_SAE
enum { SAE_INIT, SAE_COMMIT, SAE_CONFIRM } sae_state;
u16 sae_send_confirm;
struct sae_data *sae;
#endif /* CONFIG_SAE */
};

17
src/common/sae.h Normal file
View File

@ -0,0 +1,17 @@
/*
* Simultaneous authentication of equals
* Copyright (c) 2012, Jouni Malinen <j@w1.fi>
*
* This software may be distributed under the terms of the BSD license.
* See README for more details.
*/
#ifndef SAE_H
#define SAE_H
struct sae_data {
enum { SAE_INIT, SAE_COMMIT, SAE_CONFIRM } state;
u16 send_confirm;
};
#endif /* SAE_H */

17
wpa_supplicant/sme.c
View File

@ -14,6 +14,7 @@
#include "common/ieee802_11_common.h"
#include "eapol_supp/eapol_supp_sm.h"
#include "common/wpa_common.h"
#include "common/sae.h"
#include "rsn_supp/wpa.h"
#include "rsn_supp/pmksa_cache.h"
#include "config.h"
@ -70,8 +71,8 @@ static struct wpabuf * sme_auth_build_sae_confirm(struct wpa_supplicant *wpa_s)
wpabuf_put_le16(buf, 2); /* Transaction seq# */
wpabuf_put_le16(buf, WLAN_STATUS_SUCCESS);
wpabuf_put_le16(buf, wpa_s->sme.sae_send_confirm);
wpa_s->sme.sae_send_confirm++;
wpabuf_put_le16(buf, wpa_s->sme.sae.send_confirm);
wpa_s->sme.sae.send_confirm++;
/* TODO: Confirm */
return buf;
@ -332,7 +333,7 @@ static void sme_send_authentication(struct wpa_supplicant *wpa_s,
return;
params.sae_data = wpabuf_head(resp);
params.sae_data_len = wpabuf_len(resp);
wpa_s->sme.sae_state = start ? SME_SAE_COMMIT : SME_SAE_CONFIRM;
wpa_s->sme.sae.state = start ? SAE_COMMIT : SAE_CONFIRM;
}
#endif /* CONFIG_SAE */
@ -377,8 +378,10 @@ static void sme_send_authentication(struct wpa_supplicant *wpa_s,
void sme_authenticate(struct wpa_supplicant *wpa_s,
struct wpa_bss *bss, struct wpa_ssid *ssid)
{
wpa_s->sme.sae_state = SME_SAE_INIT;
wpa_s->sme.sae_send_confirm = 0;
#ifdef CONFIG_SAE
wpa_s->sme.sae.state = SAE_INIT;
wpa_s->sme.sae.send_confirm = 0;
#endif /* CONFIG_SAE */
sme_send_authentication(wpa_s, bss, ssid, 1);
}
@ -433,7 +436,7 @@ static int sme_sae_auth(struct wpa_supplicant *wpa_s, u16 auth_transaction,
if (wpa_s->current_bss == NULL ||
wpa_s->current_ssid == NULL)
return -1;
if (wpa_s->sme.sae_state != SME_SAE_COMMIT)
if (wpa_s->sme.sae.state != SAE_COMMIT)
return -1;
if (sme_sae_process_commit(wpa_s, data, len) < 0)
return -1;
@ -442,7 +445,7 @@ static int sme_sae_auth(struct wpa_supplicant *wpa_s, u16 auth_transaction,
return 0;
} else if (auth_transaction == 2) {
wpa_dbg(wpa_s, MSG_DEBUG, "SME SAE confirm");
if (wpa_s->sme.sae_state != SME_SAE_CONFIRM)
if (wpa_s->sme.sae.state != SAE_CONFIRM)
return -1;
if (sme_sae_process_confirm(wpa_s, data, len) < 0)
return -1;

10
wpa_supplicant/wpa_supplicant_i.h
View File

@ -11,6 +11,7 @@
#include "utils/list.h"
#include "common/defs.h"
#include "common/sae.h"
#include "config_ssid.h"
extern const char *wpa_supplicant_version;
@ -513,12 +514,9 @@ struct wpa_supplicant {
u8 sched_obss_scan;
u16 obss_scan_int;
u16 bss_max_idle_period;
enum {
SME_SAE_INIT,
SME_SAE_COMMIT,
SME_SAE_CONFIRM
} sae_state;
u16 sae_send_confirm;
#ifdef CONFIG_SAE
struct sae_data sae;
#endif /* CONFIG_SAE */
} sme;
#endif /* CONFIG_SME */