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Add SME support (separate authentication and association)

Browse source 
This can be used, e.g., with mac80211-based Linux drivers with
nl80211. This allows over-the-air FT protocol to be used (IEEE
802.11r).

Since the nl80211 interface needed for this is very recent (added
today  into wireless-testing.git), driver_nl80211.c has backwards
compatibility code that uses WEXT for association if the kernel does
not support the new commands. This compatibility code can be
disabled by defining NO_WEXT_COMPAT. That code will also be removed
at  some point to clean up driver_nl80211.c.
This commit is contained in:
Jouni Malinen 2009-03-20 22:26:41 +02:00 committed by Jouni Malinen
parent b21fab69fd
commit c2a0407851
15 changed files with 1023 additions and 67 deletions
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10
src/common/defs.h
View file

@ -128,6 +128,16 @@ typedef enum {
*/
WPA_SCANNING,
/**
* WPA_AUTHENTICATING - Trying to authenticate with a BSS/SSID
*
* This state is entered when wpa_supplicant has found a suitable BSS
* to authenticate with and the driver is configured to try to
* authenticate with this BSS. This state is used only with drivers
* that use wpa_supplicant as the SME.
*/
WPA_AUTHENTICATING,
/**
* WPA_ASSOCIATING - Trying to associate with a BSS/SSID
*

70
src/drivers/driver.h
View file

@ -22,6 +22,7 @@
#define AUTH_ALG_OPEN_SYSTEM 0x01
#define AUTH_ALG_SHARED_KEY 0x02
#define AUTH_ALG_LEAP 0x04
#define AUTH_ALG_FT 0x08
#define IEEE80211_MODE_INFRA 0
#define IEEE80211_MODE_IBSS 1
@ -189,6 +190,20 @@ struct wpa_driver_scan_params {
size_t extra_ies_len;
};
/**
* struct wpa_driver_auth_params - Authentication parameters
* Data for struct wpa_driver_ops::authenticate().
*/
struct wpa_driver_auth_params {
int freq;
const u8 *bssid;
const u8 *ssid;
size_t ssid_len;
int auth_alg;
const u8 *ie;
size_t ie_len;
};
/**
* struct wpa_driver_associate_params - Association parameters
* Data for struct wpa_driver_ops::associate().
@ -369,6 +384,9 @@ struct wpa_driver_capa {
* struct wpa_driver_ops::set_key using alg = WPA_ALG_PMK */
#define WPA_DRIVER_FLAGS_4WAY_HANDSHAKE 0x00000008
#define WPA_DRIVER_FLAGS_WIRED 0x00000010
/* Driver provides separate commands for authentication and association (SME in
* wpa_supplicant). */
#define WPA_DRIVER_FLAGS_SME 0x00000020
unsigned int flags;
int max_scan_ssids;
@ -1083,6 +1101,21 @@ struct wpa_driver_ops {
* results with wpa_driver_get_scan_results2().
*/
int (*scan2)(void *priv, struct wpa_driver_scan_params *params);
/**
* authenticate - Request driver to authenticate
* @priv: private driver interface data
* @params: authentication parameters
* Returns: 0 on success, -1 on failure
*
* This is an optional function that can be used with drivers that
* support separate authentication and association steps, i.e., when
* wpa_supplicant can act as the SME. If not implemented, associate()
* function is expected to take care of IEEE 802.11 authentication,
* too.
*/
int (*authenticate)(void *priv,
struct wpa_driver_auth_params *params);
};
/**
@ -1108,7 +1141,9 @@ typedef enum wpa_event_type {
*
* This event should be called when association is lost either due to
* receiving deauthenticate or disassociate frame from the AP or when
* sending either of these frames to the current AP.
* sending either of these frames to the current AP. If the driver
* supports separate deauthentication event, EVENT_DISASSOC should only
* be used for disassociation and EVENT_DEAUTH for deauthentication.
*/
EVENT_DISASSOC,
@ -1216,7 +1251,27 @@ typedef enum wpa_event_type {
* event starts RSN authentication with the other STA to authenticate
* the STA and set up encryption keys with it.
*/
EVENT_IBSS_RSN_START
EVENT_IBSS_RSN_START,
/**
* EVENT_AUTH - Authentication result
*
* This event should be called when authentication attempt has been
* completed. This is only used if the driver supports separate
* authentication step (struct wpa_driver_ops::authenticate).
* Information about authentication result is included in
* union wpa_event_data::auth.
*/
EVENT_AUTH,
/**
* EVENT_DEAUTH - Authentication lost
*
* This event should be called when authentication is lost either due
* to receiving deauthenticate frame from the AP or when sending that
* frame to the current AP.
*/
EVENT_DEAUTH
} wpa_event_type;
@ -1354,6 +1409,17 @@ union wpa_event_data {
struct ibss_rsn_start {
u8 peer[ETH_ALEN];
} ibss_rsn_start;
/**
* struct auth_info - Data for EVENT_AUTH events
*/
struct auth_info {
u8 peer[ETH_ALEN];
u16 auth_type;
u16 status_code;
const u8 *ies;
size_t ies_len;
} auth;
};
/**

3
src/drivers/driver_ndis.c
View file

@ -3214,5 +3214,6 @@ const struct wpa_driver_ops wpa_driver_ndis_ops = {
NULL /* global_deinit */,
NULL /* init2 */,
wpa_driver_ndis_get_interfaces,
NULL /* scan2 */
NULL /* scan2 */,
NULL /* authenticate */
};

404
src/drivers/driver_nl80211.c
View file

@ -47,6 +47,16 @@
#endif
#ifndef NO_WEXT_COMPAT
/*
* Fall back to WEXT association, if the kernel does not support nl80211 MLME
* commands. This is temporary backwards compatibility version that will be
* removed at some point.
*/
#define WEXT_COMPAT
#endif /* NO_WEXT_COMPAT */
struct wpa_driver_nl80211_data {
void *ctx;
int wext_event_sock;
@ -54,17 +64,20 @@ struct wpa_driver_nl80211_data {
char ifname[IFNAMSIZ + 1];
int ifindex;
int if_removed;
u8 *assoc_req_ies;
size_t assoc_req_ies_len;
u8 *assoc_resp_ies;
size_t assoc_resp_ies_len;
struct wpa_driver_capa capa;
int has_capability;
int we_version_compiled;
#ifdef WEXT_COMPAT
u8 *assoc_req_ies;
size_t assoc_req_ies_len;
u8 *assoc_resp_ies;
size_t assoc_resp_ies_len;
/* for set_auth_alg fallback */
int use_crypt;
int auth_alg_fallback;
#endif /* WEXT_COMPAT */
int operstate;
@ -81,6 +94,9 @@ struct wpa_driver_nl80211_data {
int monitor_sock; /* socket for monitor */
int monitor_ifidx;
#endif /* CONFIG_CLIENT_MLME */
u8 bssid[ETH_ALEN];
int associated;
};
@ -300,6 +316,8 @@ static int wpa_driver_nl80211_set_auth_param(
static int wpa_driver_nl80211_get_bssid(void *priv, u8 *bssid)
{
struct wpa_driver_nl80211_data *drv = priv;
#ifdef WEXT_COMPAT
if (!(drv->capa.flags & WPA_DRIVER_FLAGS_SME)) {
struct iwreq iwr;
int ret = 0;
@ -314,6 +332,12 @@ static int wpa_driver_nl80211_get_bssid(void *priv, u8 *bssid)
return ret;
}
#endif /* WEXT_COMPAT */
if (!drv->associated)
return -1;
os_memcpy(bssid, drv->bssid, ETH_ALEN);
return 0;
}
static int wpa_driver_nl80211_set_bssid(void *priv, const u8 *bssid)
@ -431,6 +455,7 @@ static int wpa_driver_nl80211_set_freq(void *priv, int freq)
}
#ifdef WEXT_COMPAT
static void
wpa_driver_nl80211_event_wireless_custom(void *ctx, char *custom)
{
@ -501,6 +526,7 @@ wpa_driver_nl80211_event_wireless_custom(void *ctx, char *custom)
#endif /* CONFIG_PEERKEY */
}
}
#endif /* WEXT_COMPAT */
static int wpa_driver_nl80211_event_wireless_michaelmicfailure(
@ -553,6 +579,7 @@ static int wpa_driver_nl80211_event_wireless_pmkidcand(
}
#ifdef WEXT_COMPAT
static int wpa_driver_nl80211_event_wireless_assocreqie(
struct wpa_driver_nl80211_data *drv, const char *ev, int len)
{
@ -619,13 +646,17 @@ static void wpa_driver_nl80211_event_assoc_ies(struct wpa_driver_nl80211_data *d
os_free(data.assoc_info.req_ies);
os_free(data.assoc_info.resp_ies);
}
#endif /* WEXT_COMPAT */
static void wpa_driver_nl80211_event_wireless(struct wpa_driver_nl80211_data *drv,
void *ctx, char *data, int len)
{
struct iw_event iwe_buf, *iwe = &iwe_buf;
char *pos, *end, *custom, *buf;
char *pos, *end, *custom;
#ifdef WEXT_COMPAT
char *buf;
#endif /* WEXT_COMPAT */
pos = data;
end = data + len;
@ -657,7 +688,10 @@ static void wpa_driver_nl80211_event_wireless(struct wpa_driver_nl80211_data *dr
}
switch (iwe->cmd) {
#ifdef WEXT_COMPAT
case SIOCGIWAP:
if (drv->capa.flags & WPA_DRIVER_FLAGS_SME)
break;
wpa_printf(MSG_DEBUG, "Wireless event: new AP: "
MACSTR,
MAC2STR((u8 *) iwe->u.ap_addr.sa_data));
@ -678,11 +712,15 @@ static void wpa_driver_nl80211_event_wireless(struct wpa_driver_nl80211_data *dr
wpa_supplicant_event(ctx, EVENT_ASSOC, NULL);
}
break;
#endif /* WEXT_COMPAT */
case IWEVMICHAELMICFAILURE:
wpa_driver_nl80211_event_wireless_michaelmicfailure(
ctx, custom, iwe->u.data.length);
break;
#ifdef WEXT_COMPAT
case IWEVCUSTOM:
if (drv->capa.flags & WPA_DRIVER_FLAGS_SME)
break;
if (custom + iwe->u.data.length > end)
return;
buf = os_malloc(iwe->u.data.length + 1);
@ -694,13 +732,18 @@ static void wpa_driver_nl80211_event_wireless(struct wpa_driver_nl80211_data *dr
os_free(buf);
break;
case IWEVASSOCREQIE:
if (drv->capa.flags & WPA_DRIVER_FLAGS_SME)
break;
wpa_driver_nl80211_event_wireless_assocreqie(
drv, custom, iwe->u.data.length);
break;
case IWEVASSOCRESPIE:
if (drv->capa.flags & WPA_DRIVER_FLAGS_SME)
break;
wpa_driver_nl80211_event_wireless_assocrespie(
drv, custom, iwe->u.data.length);
break;
#endif /* WEXT_COMPAT */
case IWEVPMKIDCAND:
wpa_driver_nl80211_event_wireless_pmkidcand(
drv, custom, iwe->u.data.length);
@ -961,6 +1004,103 @@ static int no_seq_check(struct nl_msg *msg, void *arg)
}
static void mlme_event_auth(struct wpa_driver_nl80211_data *drv,
const u8 *frame, size_t len)
{
const struct ieee80211_mgmt *mgmt;
union wpa_event_data event;
mgmt = (const struct ieee80211_mgmt *) frame;
if (len < 24 + sizeof(mgmt->u.auth)) {
wpa_printf(MSG_DEBUG, "nl80211: Too short association event "
"frame");
return;
}
os_memset(&event, 0, sizeof(event));
os_memcpy(event.auth.peer, mgmt->sa, ETH_ALEN);
event.auth.auth_type = le_to_host16(mgmt->u.auth.auth_alg);
event.auth.status_code = le_to_host16(mgmt->u.auth.status_code);
if (len > 24 + sizeof(mgmt->u.auth)) {
event.auth.ies = mgmt->u.auth.variable;
event.auth.ies_len = len - 24 - sizeof(mgmt->u.auth);
}
wpa_supplicant_event(drv->ctx, EVENT_AUTH, &event);
}
static void mlme_event_assoc(struct wpa_driver_nl80211_data *drv,
const u8 *frame, size_t len)
{
const struct ieee80211_mgmt *mgmt;
union wpa_event_data event;
u16 status;
mgmt = (const struct ieee80211_mgmt *) frame;
if (len < 24 + sizeof(mgmt->u.assoc_resp)) {
wpa_printf(MSG_DEBUG, "nl80211: Too short association event "
"frame");
return;
}
status = le_to_host16(mgmt->u.assoc_resp.status_code);
if (status != WLAN_STATUS_SUCCESS) {
wpa_printf(MSG_DEBUG, "nl80211: Association failed: status "
"code %d", status);
/* TODO: notify SME so that things like SA Query and comeback
* time can be implemented */
return;
}
drv->associated = 1;
os_memcpy(drv->bssid, mgmt->sa, ETH_ALEN);
os_memset(&event, 0, sizeof(event));
if (len > 24 + sizeof(mgmt->u.assoc_resp)) {
event.assoc_info.resp_ies = (u8 *) mgmt->u.assoc_resp.variable;
event.assoc_info.resp_ies_len =
len - 24 - sizeof(mgmt->u.assoc_req);
}
wpa_supplicant_event(drv->ctx, EVENT_ASSOC, &event);
}
static void mlme_event(struct wpa_driver_nl80211_data *drv,
enum nl80211_commands cmd, struct nlattr *frame)
{
if (frame == NULL) {
wpa_printf(MSG_DEBUG, "nl80211: MLME event %d without frame "
"data", cmd);
return;
}
wpa_printf(MSG_DEBUG, "nl80211: MLME event %d", cmd);
wpa_hexdump(MSG_MSGDUMP, "nl80211: MLME event frame",
nla_data(frame), nla_len(frame));
switch (cmd) {
case NL80211_CMD_AUTHENTICATE:
mlme_event_auth(drv, nla_data(frame), nla_len(frame));
break;
case NL80211_CMD_ASSOCIATE:
mlme_event_assoc(drv, nla_data(frame), nla_len(frame));
break;
case NL80211_CMD_DEAUTHENTICATE:
drv->associated = 0;
wpa_supplicant_event(drv->ctx, EVENT_DEAUTH, NULL);
break;
case NL80211_CMD_DISASSOCIATE:
drv->associated = 0;
wpa_supplicant_event(drv->ctx, EVENT_DISASSOC, NULL);
break;
default:
break;
}
}
static int process_event(struct nl_msg *msg, void *arg)
{
struct wpa_driver_nl80211_data *drv = arg;
@ -998,9 +1138,15 @@ static int process_event(struct nl_msg *msg, void *arg)
drv->ctx);
wpa_supplicant_event(drv->ctx, EVENT_SCAN_RESULTS, NULL);
break;
case NL80211_CMD_AUTHENTICATE:
case NL80211_CMD_ASSOCIATE:
case NL80211_CMD_DEAUTHENTICATE:
case NL80211_CMD_DISASSOCIATE:
mlme_event(drv, gnlh->cmd, tb[NL80211_ATTR_FRAME]);
break;
default:
wpa_printf(MSG_DEBUG, "nl0211: Ignored unknown event (cmd=%d)",
gnlh->cmd);
wpa_printf(MSG_DEBUG, "nl80211: Ignored unknown event "
"(cmd=%d)", gnlh->cmd);
break;
}
@ -1490,6 +1636,28 @@ static void * wpa_driver_nl80211_init(void *ctx, const char *ifname)
ret, strerror(-ret));
goto err4;
}
ret = nl_get_multicast_id(drv, "nl80211", "mlme");
if (ret >= 0)
ret = nl_socket_add_membership(drv->nl_handle, ret);
#ifdef WEXT_COMPAT
if (ret < 0) {
wpa_printf(MSG_DEBUG, "nl80211: Could not add multicast "
"membership for mlme events: %d (%s)",
ret, strerror(-ret));
/* Use WEXT for association request */
} else
drv->capa.flags |= WPA_DRIVER_FLAGS_SME;
#else /* WEXT_COMPAT */
if (ret < 0) {
wpa_printf(MSG_ERROR, "nl80211: Could not add multicast "
"membership for mlme events: %d (%s)",
ret, strerror(-ret));
goto err4;
}
drv->capa.flags |= WPA_DRIVER_FLAGS_SME;
#endif /* WEXT_COMPAT */
eloop_register_read_sock(nl_socket_get_fd(drv->nl_handle),
wpa_driver_nl80211_event_receive, drv, ctx);
@ -1622,8 +1790,10 @@ static void wpa_driver_nl80211_deinit(void *priv)
close(drv->wext_event_sock);
close(drv->ioctl_sock);
#ifdef WEXT_COMPAT
os_free(drv->assoc_req_ies);
os_free(drv->assoc_resp_ies);
#endif /* WEXT_COMPAT */
eloop_unregister_read_sock(nl_socket_get_fd(drv->nl_handle));
genl_family_put(drv->nl80211);
@ -1902,14 +2072,18 @@ static int wpa_driver_nl80211_get_range(void *priv)
}
#ifdef WEXT_COMPAT
static int wpa_driver_nl80211_set_wpa(void *priv, int enabled)
{
struct wpa_driver_nl80211_data *drv = priv;
if (drv->capa.flags & WPA_DRIVER_FLAGS_SME)
return 0;
wpa_printf(MSG_DEBUG, "%s", __FUNCTION__);
return wpa_driver_nl80211_set_auth_param(drv, IW_AUTH_WPA_ENABLED,
enabled);
}
#endif /* WEXT_COMPAT */
static int wpa_driver_nl80211_set_key(void *priv, wpa_alg alg,
@ -1999,15 +2173,19 @@ nla_put_failure:
}
#ifdef WEXT_COMPAT
static int wpa_driver_nl80211_set_countermeasures(void *priv,
int enabled)
{
struct wpa_driver_nl80211_data *drv = priv;
if (drv->capa.flags & WPA_DRIVER_FLAGS_SME)
return 0;
wpa_printf(MSG_DEBUG, "%s", __FUNCTION__);
return wpa_driver_nl80211_set_auth_param(drv,
IW_AUTH_TKIP_COUNTERMEASURES,
enabled);
}
#endif /* WEXT_COMPAT */
static int wpa_driver_nl80211_set_drop_unencrypted(void *priv,
@ -2015,14 +2193,18 @@ static int wpa_driver_nl80211_set_drop_unencrypted(void *priv,
{
struct wpa_driver_nl80211_data *drv = priv;
wpa_printf(MSG_DEBUG, "%s", __FUNCTION__);
#ifdef WEXT_COMPAT
drv->use_crypt = enabled;
#endif /* WEXT_COMPAT */
return wpa_driver_nl80211_set_auth_param(drv, IW_AUTH_DROP_UNENCRYPTED,
enabled);
}
static int wpa_driver_nl80211_mlme(struct wpa_driver_nl80211_data *drv,
const u8 *addr, int cmd, int reason_code)
#ifdef WEXT_COMPAT
static int wpa_driver_nl80211_mlme_wext(struct wpa_driver_nl80211_data *drv,
const u8 *addr, int cmd,
int reason_code)
{
struct iwreq iwr;
struct iw_mlme mlme;
@ -2045,14 +2227,53 @@ static int wpa_driver_nl80211_mlme(struct wpa_driver_nl80211_data *drv,
return ret;
}
#endif /* WEXT_COMPAT */
static int wpa_driver_nl80211_mlme(struct wpa_driver_nl80211_data *drv,
const u8 *addr, int cmd, u16 reason_code)
{
int ret = -1;
struct nl_msg *msg;
msg = nlmsg_alloc();
if (!msg)
return -1;
genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0, 0, cmd, 0);
NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
NLA_PUT_U16(msg, NL80211_ATTR_REASON_CODE, reason_code);
NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, addr);
ret = send_and_recv_msgs(drv, msg, NULL, NULL);
msg = NULL;
if (ret) {
wpa_printf(MSG_DEBUG, "nl80211: MLME command failed: ret=%d "
"(%s)", ret, strerror(-ret));
goto nla_put_failure;
}
ret = 0;
nla_put_failure:
nlmsg_free(msg);
return ret;
}
static int wpa_driver_nl80211_deauthenticate(void *priv, const u8 *addr,
int reason_code)
{
struct wpa_driver_nl80211_data *drv = priv;
wpa_printf(MSG_DEBUG, "%s", __FUNCTION__);
return wpa_driver_nl80211_mlme(drv, addr, IW_MLME_DEAUTH, reason_code);
wpa_printf(MSG_DEBUG, "%s", __func__);
#ifdef WEXT_COMPAT
if (!(drv->capa.flags & WPA_DRIVER_FLAGS_SME))
return wpa_driver_nl80211_mlme_wext(drv, addr, IW_MLME_DEAUTH,
reason_code);
#endif /* WEXT_COMPAT */
return wpa_driver_nl80211_mlme(drv, addr, NL80211_CMD_DEAUTHENTICATE,
reason_code);
}
@ -2060,12 +2281,19 @@ static int wpa_driver_nl80211_disassociate(void *priv, const u8 *addr,
int reason_code)
{
struct wpa_driver_nl80211_data *drv = priv;
wpa_printf(MSG_DEBUG, "%s", __FUNCTION__);
return wpa_driver_nl80211_mlme(drv, addr, IW_MLME_DISASSOC,
wpa_printf(MSG_DEBUG, "%s", __func__);
#ifdef WEXT_COMPAT
if (!(drv->capa.flags & WPA_DRIVER_FLAGS_SME))
return wpa_driver_nl80211_mlme_wext(drv, addr,
IW_MLME_DISASSOC,
reason_code);
#endif /* WEXT_COMPAT */
return wpa_driver_nl80211_mlme(drv, addr, NL80211_CMD_DISASSOCIATE,
reason_code);
}
#ifdef WEXT_COMPAT
static int wpa_driver_nl80211_set_gen_ie(void *priv, const u8 *ie,
size_t ie_len)
{
@ -2073,6 +2301,8 @@ static int wpa_driver_nl80211_set_gen_ie(void *priv, const u8 *ie,
struct iwreq iwr;
int ret = 0;
if (drv->capa.flags & WPA_DRIVER_FLAGS_SME)
return 0;
os_memset(&iwr, 0, sizeof(iwr));
os_strlcpy(iwr.ifr_name, drv->ifname, IFNAMSIZ);
iwr.u.data.pointer = (caddr_t) ie;
@ -2164,7 +2394,7 @@ wpa_driver_nl80211_auth_alg_fallback(struct wpa_driver_nl80211_data *drv,
}
static int wpa_driver_nl80211_associate(
static int wpa_driver_nl80211_associate_wext(
void *priv, struct wpa_driver_associate_params *params)
{
struct wpa_driver_nl80211_data *drv = priv;
@ -2251,6 +2481,9 @@ static int wpa_driver_nl80211_set_auth_alg(void *priv, int auth_alg)
struct wpa_driver_nl80211_data *drv = priv;
int algs = 0, res;
if (drv->capa.flags & WPA_DRIVER_FLAGS_SME)
return 0;
if (auth_alg & AUTH_ALG_OPEN_SYSTEM)
algs |= IW_AUTH_ALG_OPEN_SYSTEM;
if (auth_alg & AUTH_ALG_SHARED_KEY)
@ -2267,6 +2500,140 @@ static int wpa_driver_nl80211_set_auth_alg(void *priv, int auth_alg)
drv->auth_alg_fallback = res == -2;
return res;
}
#endif /* WEXT_COMPAT */
static int wpa_driver_nl80211_authenticate(
void *priv, struct wpa_driver_auth_params *params)
{
struct wpa_driver_nl80211_data *drv = priv;
int ret = -1;
struct nl_msg *msg;
enum nl80211_auth_type type;
drv->associated = 0;
msg = nlmsg_alloc();
if (!msg)
return -1;
wpa_printf(MSG_DEBUG, "nl80211: Authenticate (ifindex=%d)",
drv->ifindex);
genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0, 0,
NL80211_CMD_AUTHENTICATE, 0);
NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
if (params->bssid) {
wpa_printf(MSG_DEBUG, " * bssid=" MACSTR,
MAC2STR(params->bssid));
NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, params->bssid);
}
if (params->freq) {
wpa_printf(MSG_DEBUG, " * freq=%d", params->freq);
NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_FREQ, params->freq);
}
if (params->ssid) {
wpa_hexdump_ascii(MSG_DEBUG, " * SSID",
params->ssid, params->ssid_len);
NLA_PUT(msg, NL80211_ATTR_SSID, params->ssid_len,
params->ssid);
}
wpa_hexdump(MSG_DEBUG, " * IEs", params->ie, params->ie_len);
if (params->ie)
NLA_PUT(msg, NL80211_ATTR_IE, params->ie_len, params->ie);
/*
* TODO: if multiple auth_alg options enabled, try them one by one if
* the AP rejects authentication due to unknown auth alg
*/
if (params->auth_alg & AUTH_ALG_OPEN_SYSTEM)
type = NL80211_AUTHTYPE_OPEN_SYSTEM;
else if (params->auth_alg & AUTH_ALG_SHARED_KEY)
type = NL80211_AUTHTYPE_SHARED_KEY;
else if (params->auth_alg & AUTH_ALG_LEAP)
type = NL80211_AUTHTYPE_NETWORK_EAP;
else if (params->auth_alg & AUTH_ALG_FT)
type = NL80211_AUTHTYPE_FT;
else
goto nla_put_failure;
wpa_printf(MSG_DEBUG, " * Auth Type %d", type);
NLA_PUT_U32(msg, NL80211_ATTR_AUTH_TYPE, type);
ret = send_and_recv_msgs(drv, msg, NULL, NULL);
msg = NULL;
if (ret) {
wpa_printf(MSG_DEBUG, "nl80211: MLME command failed: ret=%d "
"(%s)", ret, strerror(-ret));
goto nla_put_failure;
}
ret = 0;
wpa_printf(MSG_DEBUG, "nl80211: Authentication request send "
"successfully");
nla_put_failure:
nlmsg_free(msg);
return ret;
}
static int wpa_driver_nl80211_associate(
void *priv, struct wpa_driver_associate_params *params)
{
struct wpa_driver_nl80211_data *drv = priv;
int ret = -1;
struct nl_msg *msg;
#ifdef WEXT_COMPAT
if (!(drv->capa.flags & WPA_DRIVER_FLAGS_SME))
return wpa_driver_nl80211_associate_wext(drv, params);
#endif /* WEXT_COMPAT */
drv->associated = 0;
msg = nlmsg_alloc();
if (!msg)
return -1;
wpa_printf(MSG_DEBUG, "nl80211: Associate (ifindex=%d)",
drv->ifindex);
genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0, 0,
NL80211_CMD_ASSOCIATE, 0);
NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
if (params->bssid) {
wpa_printf(MSG_DEBUG, " * bssid=" MACSTR,
MAC2STR(params->bssid));
NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, params->bssid);
}
if (params->freq) {
wpa_printf(MSG_DEBUG, " * freq=%d", params->freq);
NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_FREQ, params->freq);
}
if (params->ssid) {
wpa_hexdump_ascii(MSG_DEBUG, " * SSID",
params->ssid, params->ssid_len);
NLA_PUT(msg, NL80211_ATTR_SSID, params->ssid_len,
params->ssid);
}
wpa_hexdump(MSG_DEBUG, " * IEs", params->wpa_ie, params->wpa_ie_len);
if (params->wpa_ie)
NLA_PUT(msg, NL80211_ATTR_IE, params->wpa_ie_len,
params->wpa_ie);
ret = send_and_recv_msgs(drv, msg, NULL, NULL);
msg = NULL;
if (ret) {
wpa_printf(MSG_DEBUG, "nl80211: MLME command failed: ret=%d "
"(%s)", ret, strerror(-ret));
goto nla_put_failure;
}
ret = 0;
wpa_printf(MSG_DEBUG, "nl80211: Association request send "
"successfully");
nla_put_failure:
nlmsg_free(msg);
return ret;
}
/**
@ -2765,17 +3132,15 @@ const struct wpa_driver_ops wpa_driver_nl80211_ops = {
.desc = "Linux nl80211/cfg80211",
.get_bssid = wpa_driver_nl80211_get_bssid,
.get_ssid = wpa_driver_nl80211_get_ssid,
.set_wpa = wpa_driver_nl80211_set_wpa,
.set_key = wpa_driver_nl80211_set_key,
.set_countermeasures = wpa_driver_nl80211_set_countermeasures,
.set_drop_unencrypted = wpa_driver_nl80211_set_drop_unencrypted,
.scan2 = wpa_driver_nl80211_scan,
.get_scan_results2 = wpa_driver_nl80211_get_scan_results,
.deauthenticate = wpa_driver_nl80211_deauthenticate,
.disassociate = wpa_driver_nl80211_disassociate,
.set_mode = wpa_driver_nl80211_set_mode,
.authenticate = wpa_driver_nl80211_authenticate,
.associate = wpa_driver_nl80211_associate,
.set_auth_alg = wpa_driver_nl80211_set_auth_alg,
.init = wpa_driver_nl80211_init,
.deinit = wpa_driver_nl80211_deinit,
.set_param = wpa_driver_nl80211_set_param,
@ -2794,4 +3159,9 @@ const struct wpa_driver_ops wpa_driver_nl80211_ops = {
.mlme_add_sta = wpa_driver_nl80211_mlme_add_sta,
.mlme_remove_sta = wpa_driver_nl80211_mlme_remove_sta,
#endif /* CONFIG_CLIENT_MLME */
#ifdef WEXT_COMPAT
.set_wpa = wpa_driver_nl80211_set_wpa,
.set_countermeasures = wpa_driver_nl80211_set_countermeasures,
.set_auth_alg = wpa_driver_nl80211_set_auth_alg,
#endif /* WEXT_COMPAT */
};

3
src/drivers/driver_privsep.c
View file

@ -810,7 +810,8 @@ struct wpa_driver_ops wpa_driver_privsep_ops = {
NULL /* global_deinit */,
NULL /* init2 */,
NULL /* get_interfaces */,
NULL /* scan2 */
NULL /* scan2 */,
NULL /* authenticate */
};

3
src/drivers/driver_test.c
View file

@ -1326,5 +1326,6 @@ const struct wpa_driver_ops wpa_driver_test_ops = {
wpa_driver_test_global_deinit,
wpa_driver_test_init2,
wpa_driver_test_get_interfaces,
wpa_driver_test_scan
wpa_driver_test_scan,
NULL /* authenticate */
};

4
wpa_supplicant/ChangeLog
View file

@ -18,6 +18,10 @@ ChangeLog for wpa_supplicant
fix wired IEEE 802.1X authentication
* fixed IEEE 802.11r key derivation function to match with the standard
(note: this breaks interoperability with previous version) [Bug 303]
* added better support for drivers that allow separate authentication
and association commands (e.g., mac80211-based Linux drivers with
nl80211; SME in wpa_supplicant); this allows over-the-air FT protocol
to be used (IEEE 802.11r)
2009-01-06 - v0.6.7
* added support for Wi-Fi Protected Setup (WPS)

6
wpa_supplicant/Makefile
View file

@ -138,6 +138,7 @@ LIBS += -lnl
ifdef CONFIG_CLIENT_MLME
OBJS_d += ../src/utils/radiotap.o
endif
NEED_SME=y
endif
ifdef CONFIG_DRIVER_PRISM54
@ -1035,6 +1036,11 @@ ifdef NEED_BASE64
OBJS += ../src/utils/base64.o
endif
ifdef NEED_SME
OBJS += sme.o
CFLAGS += -DCONFIG_SME
endif
ifdef CONFIG_CLIENT_MLME
OBJS += mlme.o ../src/common/ieee802_11_common.o
CFLAGS += -DCONFIG_CLIENT_MLME

83
wpa_supplicant/events.c
View file

@ -33,6 +33,7 @@
#include "wpas_glue.h"
#include "wps_supplicant.h"
#include "ibss_rsn.h"
#include "sme.h"
static int wpa_supplicant_select_config(struct wpa_supplicant *wpa_s)
@ -708,11 +709,58 @@ req_scan:
#endif /* CONFIG_NO_SCAN_PROCESSING */
#ifdef CONFIG_IEEE80211R
static void wpa_assoc_set_ft_params(struct wpa_supplicant *wpa_s,
const u8 *ftie, const u8 *mdie)
{
const u8 *mobility_domain = NULL;
const u8 *r0kh_id = NULL;
size_t r0kh_id_len = 0;
const u8 *r1kh_id = NULL;
struct rsn_ftie *hdr;
const u8 *pos, *end;
if (mdie == NULL || ftie == NULL)
return;
if (mdie[1] >= MOBILITY_DOMAIN_ID_LEN) {
mobility_domain = mdie + 2;
#ifdef CONFIG_SME
wpa_s->sme.ft_used = 1;
os_memcpy(wpa_s->sme.mobility_domain, mobility_domain, 2);
#endif /* CONFIG_SME */
}
if (ftie[1] >= sizeof(struct rsn_ftie)) {
end = ftie + 2 + ftie[1];
hdr = (struct rsn_ftie *) (ftie + 2);
pos = (const u8 *) (hdr + 1);
while (pos + 1 < end) {
if (pos + 2 + pos[1] > end)
break;
if (pos[0] == FTIE_SUBELEM_R1KH_ID &&
pos[1] == FT_R1KH_ID_LEN)
r1kh_id = pos + 2;
else if (pos[0] == FTIE_SUBELEM_R0KH_ID &&
pos[1] >= 1 && pos[1] <= FT_R0KH_ID_MAX_LEN) {
r0kh_id = pos + 2;
r0kh_id_len = pos[1];
}
pos += 2 + pos[1];
}
}
wpa_sm_set_ft_params(wpa_s->wpa, mobility_domain, r0kh_id,
r0kh_id_len, r1kh_id);
}
#endif /* CONFIG_IEEE80211R */
static void wpa_supplicant_event_associnfo(struct wpa_supplicant *wpa_s,
union wpa_event_data *data)
{
int l, len, found = 0, wpa_found, rsn_found;
u8 *p;
const u8 *p;
#ifdef CONFIG_IEEE80211R
const u8 *mdie = NULL, *ftie = NULL;
#endif /* CONFIG_IEEE80211R */
wpa_printf(MSG_DEBUG, "Association info event");
if (data->assoc_info.req_ies)
@ -752,6 +800,29 @@ static void wpa_supplicant_event_associnfo(struct wpa_supplicant *wpa_s,
if (!found && data->assoc_info.req_ies)
wpa_sm_set_assoc_wpa_ie(wpa_s->wpa, NULL, 0);
#ifdef CONFIG_IEEE80211R
p = data->assoc_info.resp_ies;
l = data->assoc_info.resp_ies_len;
/* Go through the IEs and make a copy of the WPA/RSN IE, if present. */
while (p && l >= 2) {
len = p[1] + 2;
if (len > l) {
wpa_hexdump(MSG_DEBUG, "Truncated IE in assoc_info",
p, l);
break;
}
if (p[0] == WLAN_EID_FAST_BSS_TRANSITION)
ftie = p;
else if (p[0] == WLAN_EID_MOBILITY_DOMAIN)
mdie = p;
l -= len;
p += len;
}
wpa_assoc_set_ft_params(wpa_s, ftie, mdie);
#endif /* CONFIG_IEEE80211R */
/* WPA/RSN IE from Beacon/ProbeResp */
p = data->assoc_info.beacon_ies;
l = data->assoc_info.beacon_ies_len;
@ -802,9 +873,9 @@ static void wpa_supplicant_event_assoc(struct wpa_supplicant *wpa_s,
wpa_supplicant_event_associnfo(wpa_s, data);
wpa_supplicant_set_state(wpa_s, WPA_ASSOCIATED);
if (wpa_s->use_client_mlme)
if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_USER_SPACE_MLME)
os_memcpy(bssid, wpa_s->bssid, ETH_ALEN);
if (wpa_s->use_client_mlme ||
if ((wpa_s->drv_flags & WPA_DRIVER_FLAGS_USER_SPACE_MLME) ||
(wpa_drv_get_bssid(wpa_s, bssid) >= 0 &&
os_memcmp(bssid, wpa_s->bssid, ETH_ALEN) != 0)) {
wpa_msg(wpa_s, MSG_DEBUG, "Associated to a new BSS: BSSID="
@ -859,7 +930,7 @@ static void wpa_supplicant_event_assoc(struct wpa_supplicant *wpa_s,
}
wpa_supplicant_cancel_scan(wpa_s);
if (wpa_s->driver_4way_handshake &&
if ((wpa_s->drv_flags & WPA_DRIVER_FLAGS_4WAY_HANDSHAKE) &&
wpa_key_mgmt_wpa_psk(wpa_s->key_mgmt)) {
/*
* We are done; the driver will take care of RSN 4-way
@ -1113,9 +1184,13 @@ void wpa_supplicant_event(void *ctx, wpa_event_type event,
struct wpa_supplicant *wpa_s = ctx;
switch (event) {
case EVENT_AUTH:
sme_event_auth(wpa_s, data);
break;
case EVENT_ASSOC:
wpa_supplicant_event_assoc(wpa_s, data);
break;
case EVENT_DEAUTH:
case EVENT_DISASSOC:
wpa_supplicant_event_disassoc(wpa_s);
break;

11
wpa_supplicant/scan.c
View file

@ -129,7 +129,8 @@ static void wpa_supplicant_scan(void *eloop_ctx, void *timeout_ctx)
return;
}
if (wpa_s->conf->ap_scan != 0 && wpa_s->drv_wired) {
if (wpa_s->conf->ap_scan != 0 &&
(wpa_s->drv_flags & WPA_DRIVER_FLAGS_WIRED)) {
wpa_printf(MSG_DEBUG, "Using wired authentication - "
"overriding ap_scan configuration");
wpa_s->conf->ap_scan = 0;
@ -140,7 +141,8 @@ static void wpa_supplicant_scan(void *eloop_ctx, void *timeout_ctx)
return;
}
if (wpa_s->use_client_mlme || wpa_s->conf->ap_scan == 2)
if ((wpa_s->drv_flags & WPA_DRIVER_FLAGS_USER_SPACE_MLME) ||
wpa_s->conf->ap_scan == 2)
max_ssids = 1;
else {
max_ssids = wpa_s->max_scan_ssids;
@ -153,7 +155,8 @@ static void wpa_supplicant_scan(void *eloop_ctx, void *timeout_ctx)
#endif /* CONFIG_WPS */
if (wpa_s->scan_res_tried == 0 && wpa_s->conf->ap_scan == 1 &&
!wpa_s->use_client_mlme && wps != 2) {
!(wpa_s->drv_flags & WPA_DRIVER_FLAGS_USER_SPACE_MLME) &&
wps != 2) {
wpa_s->scan_res_tried++;
wpa_printf(MSG_DEBUG, "Trying to get current scan results "
"first without requesting a new scan to speed up "
@ -242,7 +245,7 @@ static void wpa_supplicant_scan(void *eloop_ctx, void *timeout_ctx)
}
#endif /* CONFIG_WPS */
if (wpa_s->use_client_mlme) {
if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_USER_SPACE_MLME) {
ieee80211_sta_set_probe_req_ie(wpa_s, params.extra_ies,
params.extra_ies_len);
ret = ieee80211_sta_req_scan(wpa_s, params.ssids[0].ssid,

337
wpa_supplicant/sme.c Normal file
View file

@ -0,0 +1,337 @@
/*
* wpa_supplicant - SME
* Copyright (c) 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 "includes.h"
#include "common.h"
#include "drivers/driver.h"
#include "ieee802_11_defs.h"
#include "eapol_supp/eapol_supp_sm.h"
#include "wpa_common.h"
#include "wpa.h"
#include "pmksa_cache.h"
#include "config.h"
#include "wpa_supplicant_i.h"
#include "wpas_glue.h"
#include "wps_supplicant.h"
#include "sme.h"
void sme_authenticate(struct wpa_supplicant *wpa_s,
struct wpa_scan_res *bss, struct wpa_ssid *ssid)
{
struct wpa_driver_auth_params params;
const u8 *ie;
#ifdef CONFIG_IEEE80211R
const u8 *md = NULL;
#endif /* CONFIG_IEEE80211R */
if (bss == NULL) {
wpa_printf(MSG_ERROR, "SME: No scan result available for the "
"network");
return;
}
os_memset(&params, 0, sizeof(params));
wpa_s->reassociate = 0;
params.freq = bss->freq;
params.bssid = bss->bssid;
ie = wpa_scan_get_ie(bss, WLAN_EID_SSID);
if (ie == NULL) {
wpa_printf(MSG_ERROR, "SME: SSID not available for the BSS");
return;
}
params.ssid = ie + 2;
params.ssid_len = ie[1];
wpa_s->sme.freq = params.freq;
os_memcpy(wpa_s->sme.ssid, params.ssid, params.ssid_len);
wpa_s->sme.ssid_len = params.ssid_len;
params.auth_alg = AUTH_ALG_OPEN_SYSTEM;
#ifdef IEEE8021X_EAPOL
if (ssid->key_mgmt & WPA_KEY_MGMT_IEEE8021X_NO_WPA) {
if (ssid->leap) {
if (ssid->non_leap == 0)
params.auth_alg = AUTH_ALG_LEAP;
else
params.auth_alg |= AUTH_ALG_LEAP;
}
}
#endif /* IEEE8021X_EAPOL */
wpa_printf(MSG_DEBUG, "Automatic auth_alg selection: 0x%x",
params.auth_alg);
if (ssid->auth_alg) {
params.auth_alg = 0;
if (ssid->auth_alg & WPA_AUTH_ALG_OPEN)
params.auth_alg |= AUTH_ALG_OPEN_SYSTEM;
if (ssid->auth_alg & WPA_AUTH_ALG_SHARED)
params.auth_alg |= AUTH_ALG_SHARED_KEY;
if (ssid->auth_alg & WPA_AUTH_ALG_LEAP)
params.auth_alg |= AUTH_ALG_LEAP;
wpa_printf(MSG_DEBUG, "Overriding auth_alg selection: 0x%x",
params.auth_alg);
}
os_memset(wpa_s->bssid, 0, ETH_ALEN);
os_memcpy(wpa_s->pending_bssid, bss->bssid, ETH_ALEN);
if (bss && (wpa_scan_get_vendor_ie(bss, WPA_IE_VENDOR_TYPE) ||
wpa_scan_get_ie(bss, WLAN_EID_RSN)) &&
(ssid->key_mgmt & (WPA_KEY_MGMT_IEEE8021X | WPA_KEY_MGMT_PSK |
WPA_KEY_MGMT_FT_IEEE8021X |
WPA_KEY_MGMT_FT_PSK |
WPA_KEY_MGMT_IEEE8021X_SHA256 |
WPA_KEY_MGMT_PSK_SHA256))) {
int try_opportunistic;
try_opportunistic = ssid->proactive_key_caching &&
(ssid->proto & WPA_PROTO_RSN);
if (pmksa_cache_set_current(wpa_s->wpa, NULL, bss->bssid,
wpa_s->current_ssid,
try_opportunistic) == 0)
eapol_sm_notify_pmkid_attempt(wpa_s->eapol, 1);
wpa_s->sme.assoc_req_ie_len = sizeof(wpa_s->sme.assoc_req_ie);
if (wpa_supplicant_set_suites(wpa_s, bss, ssid,
wpa_s->sme.assoc_req_ie,
&wpa_s->sme.assoc_req_ie_len)) {
wpa_printf(MSG_WARNING, "SME: Failed to set WPA key "
"management and encryption suites");
return;
}
} else if (ssid->key_mgmt &
(WPA_KEY_MGMT_PSK | WPA_KEY_MGMT_IEEE8021X |
WPA_KEY_MGMT_WPA_NONE | WPA_KEY_MGMT_FT_PSK |
WPA_KEY_MGMT_FT_IEEE8021X | WPA_KEY_MGMT_PSK_SHA256 |
WPA_KEY_MGMT_IEEE8021X_SHA256)) {
wpa_s->sme.assoc_req_ie_len = sizeof(wpa_s->sme.assoc_req_ie);
if (wpa_supplicant_set_suites(wpa_s, NULL, ssid,
wpa_s->sme.assoc_req_ie,
&wpa_s->sme.assoc_req_ie_len)) {
wpa_printf(MSG_WARNING, "SME: Failed to set WPA key "
"management and encryption suites (no scan "
"results)");
return;
}
#ifdef CONFIG_WPS
} else if (ssid->key_mgmt & WPA_KEY_MGMT_WPS) {
struct wpabuf *wps_ie;
wps_ie = wps_build_assoc_req_ie(wpas_wps_get_req_type(ssid));
if (wps_ie && wpabuf_len(wps_ie) <=
sizeof(wpa_s->sme.assoc_req_ie)) {
wpa_s->sme.assoc_req_ie_len = wpabuf_len(wps_ie);
os_memcpy(wpa_s->sme.assoc_req_ie, wpabuf_head(wps_ie),
wpa_s->sme.assoc_req_ie_len);
} else
wpa_s->sme.assoc_req_ie_len = 0;
wpabuf_free(wps_ie);
wpa_supplicant_set_non_wpa_policy(wpa_s, ssid);
#endif /* CONFIG_WPS */
} else {
wpa_supplicant_set_non_wpa_policy(wpa_s, ssid);
wpa_s->sme.assoc_req_ie_len = 0;
}
#ifdef CONFIG_IEEE80211R
ie = wpa_scan_get_ie(bss, WLAN_EID_MOBILITY_DOMAIN);
if (ie && ie[1] >= MOBILITY_DOMAIN_ID_LEN)
md = ie + 2;
wpa_sm_set_ft_params(wpa_s->wpa, md, NULL, 0, NULL);
if (md) {
/* Prepare for the next transition */
wpa_ft_prepare_auth_request(wpa_s->wpa);
}
if (md && ssid->key_mgmt & (WPA_KEY_MGMT_FT_PSK |
WPA_KEY_MGMT_FT_IEEE8021X)) {
if (wpa_s->sme.assoc_req_ie_len + 5 <
sizeof(wpa_s->sme.assoc_req_ie)) {
struct rsn_mdie *mdie;
u8 *pos = wpa_s->sme.assoc_req_ie +
wpa_s->sme.assoc_req_ie_len;
*pos++ = WLAN_EID_MOBILITY_DOMAIN;
*pos++ = sizeof(*mdie);
mdie = (struct rsn_mdie *) pos;
os_memcpy(mdie->mobility_domain, md,
MOBILITY_DOMAIN_ID_LEN);
mdie->ft_capab = 0;
wpa_s->sme.assoc_req_ie_len += 5;
}
if (wpa_s->sme.ft_used &&
os_memcmp(md, wpa_s->sme.mobility_domain, 2) == 0) {
wpa_printf(MSG_DEBUG, "SME: Trying to use FT "
"over-the-air");
params.auth_alg = AUTH_ALG_FT;
params.ie = wpa_s->sme.ft_ies;
params.ie_len = wpa_s->sme.ft_ies_len;
}
}
#endif /* CONFIG_IEEE80211R */
#ifdef CONFIG_IEEE80211W
switch (ssid->ieee80211w) {
case NO_IEEE80211W:
wpa_s->sme.mfp = NO_MGMT_FRAME_PROTECTION;
break;
case IEEE80211W_OPTIONAL:
wpa_s->sme.mfp = MGMT_FRAME_PROTECTION_OPTIONAL;
break;
case IEEE80211W_REQUIRED:
wpa_s->sme.mfp = MGMT_FRAME_PROTECTION_REQUIRED;
break;
}
if (ssid->ieee80211w != NO_IEEE80211W && bss) {
const u8 *rsn = wpa_scan_get_ie(bss, WLAN_EID_RSN);
struct wpa_ie_data _ie;
if (rsn && wpa_parse_wpa_ie(rsn, 2 + rsn[1], &_ie) == 0 &&
_ie.capabilities &
(WPA_CAPABILITY_MFPC | WPA_CAPABILITY_MFPR)) {
wpa_printf(MSG_DEBUG, "WPA: Selected AP supports MFP: "
"require MFP");
wpa_s->sme.mfp = MGMT_FRAME_PROTECTION_REQUIRED;
}
}
#endif /* CONFIG_IEEE80211W */
wpa_supplicant_cancel_scan(wpa_s);
wpa_msg(wpa_s, MSG_INFO, "Trying to authenticate with " MACSTR
" (SSID='%s' freq=%d MHz)", MAC2STR(params.bssid),
wpa_ssid_txt(params.ssid, params.ssid_len), params.freq);
wpa_clear_keys(wpa_s, bss->bssid);
wpa_supplicant_set_state(wpa_s, WPA_AUTHENTICATING);
wpa_s->current_ssid = ssid;
wpa_supplicant_rsn_supp_set_config(wpa_s, wpa_s->current_ssid);
wpa_supplicant_initiate_eapol(wpa_s);
if (wpa_drv_authenticate(wpa_s, &params) < 0) {
wpa_msg(wpa_s, MSG_INFO, "Authentication request to the "
"driver failed");
return;
}
/* TODO: add timeout on authentication */
/*
* Association will be started based on the authentication event from
* the driver.
*/
}
void sme_event_auth(struct wpa_supplicant *wpa_s, union wpa_event_data *data)
{
struct wpa_driver_associate_params params;
struct wpa_ssid *ssid = wpa_s->current_ssid;
if (ssid == NULL) {
wpa_printf(MSG_DEBUG, "SME: Ignore authentication event when "
"network is not selected");
return;
}
if (wpa_s->wpa_state != WPA_AUTHENTICATING) {
wpa_printf(MSG_DEBUG, "SME: Ignore authentication event when "
"not in authenticating state");
return;
}
if (os_memcmp(wpa_s->pending_bssid, data->auth.peer, ETH_ALEN) != 0) {
wpa_printf(MSG_DEBUG, "SME: Ignore authentication with "
"unexpected peer " MACSTR,
MAC2STR(data->auth.peer));
return;
}
wpa_printf(MSG_DEBUG, "SME: Authentication response: peer=" MACSTR
" auth_type=%d status_code=%d",
MAC2STR(data->auth.peer), data->auth.auth_type,
data->auth.status_code);
wpa_hexdump(MSG_MSGDUMP, "SME: Authentication response IEs",
data->auth.ies, data->auth.ies_len);
if (data->auth.status_code != WLAN_STATUS_SUCCESS) {
wpa_printf(MSG_DEBUG, "SME: Authentication failed (status "
"code %d)", data->auth.status_code);
return;
}
#ifdef CONFIG_IEEE80211R
if (data->auth.auth_type == WLAN_AUTH_FT) {
union wpa_event_data edata;
os_memset(&edata, 0, sizeof(edata));
edata.ft_ies.ies = data->auth.ies;
edata.ft_ies.ies_len = data->auth.ies_len;
os_memcpy(edata.ft_ies.target_ap, data->auth.peer, ETH_ALEN);
wpa_supplicant_event(wpa_s, EVENT_FT_RESPONSE, &edata);
}
#endif /* CONFIG_IEEE80211R */
os_memset(&params, 0, sizeof(params));
params.bssid = data->auth.peer;
params.ssid = wpa_s->sme.ssid;
params.ssid_len = wpa_s->sme.ssid_len;
params.freq = wpa_s->sme.freq;
params.wpa_ie = wpa_s->sme.assoc_req_ie_len ?
wpa_s->sme.assoc_req_ie : NULL;
params.wpa_ie_len = wpa_s->sme.assoc_req_ie_len;
#ifdef CONFIG_IEEE80211R
if (data->auth.auth_type == WLAN_AUTH_FT && wpa_s->sme.ft_ies) {
params.wpa_ie = wpa_s->sme.ft_ies;
params.wpa_ie_len = wpa_s->sme.ft_ies_len;
}
#endif /* CONFIG_IEEE80211R */
params.mode = ssid->mode;
params.mgmt_frame_protection = wpa_s->sme.mfp;
wpa_msg(wpa_s, MSG_INFO, "Trying to associate with " MACSTR
" (SSID='%s' freq=%d MHz)", MAC2STR(params.bssid),
params.ssid ? wpa_ssid_txt(params.ssid, params.ssid_len) : "",
params.freq);
wpa_supplicant_set_state(wpa_s, WPA_ASSOCIATING);
if (wpa_drv_associate(wpa_s, &params) < 0) {
wpa_msg(wpa_s, MSG_INFO, "Association request to the driver "
"failed");
return;
}
/* TODO: add timeout on association */
}
int sme_update_ft_ies(struct wpa_supplicant *wpa_s, const u8 *md,
const u8 *ies, size_t ies_len)
{
if (md == NULL || ies == NULL) {
wpa_printf(MSG_DEBUG, "SME: Remove mobility domain");
os_free(wpa_s->sme.ft_ies);
wpa_s->sme.ft_ies = NULL;
wpa_s->sme.ft_ies_len = 0;
wpa_s->sme.ft_used = 0;
return 0;
}
os_memcpy(wpa_s->sme.mobility_domain, md, MOBILITY_DOMAIN_ID_LEN);
wpa_hexdump(MSG_DEBUG, "SME: FT IEs", ies, ies_len);
os_free(wpa_s->sme.ft_ies);
wpa_s->sme.ft_ies = os_malloc(ies_len);
if (wpa_s->sme.ft_ies == NULL)
return -1;
os_memcpy(wpa_s->sme.ft_ies, ies, ies_len);
wpa_s->sme.ft_ies_len = ies_len;
return 0;
}

46
wpa_supplicant/sme.h Normal file
View file

@ -0,0 +1,46 @@
/*
* wpa_supplicant - SME
* Copyright (c) 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.
*/
#ifndef SME_H
#define SME_H
#ifdef CONFIG_SME
void sme_authenticate(struct wpa_supplicant *wpa_s,
struct wpa_scan_res *bss, struct wpa_ssid *ssid);
void sme_event_auth(struct wpa_supplicant *wpa_s, union wpa_event_data *data);
int sme_update_ft_ies(struct wpa_supplicant *wpa_s, const u8 *md,
const u8 *ies, size_t ies_len);
#else /* CONFIG_SME */
static inline void sme_authenticate(struct wpa_supplicant *wpa_s,
struct wpa_scan_res *bss,
struct wpa_ssid *ssid)
{
}
static inline void sme_event_auth(struct wpa_supplicant *wpa_s,
union wpa_event_data *data)
{
}
static inline int sme_update_ft_ies(struct wpa_supplicant *wpa_s, const u8 *md,
const u8 *ies, size_t ies_len)
{
return -1;
}
#endif /* CONFIG_SME */
#endif /* SME_H */

46
wpa_supplicant/wpa_supplicant.c
View file

@ -40,6 +40,7 @@
#include "wpas_glue.h"
#include "wps_supplicant.h"
#include "ibss_rsn.h"
#include "sme.h"
const char *wpa_supplicant_version =
"wpa_supplicant v" VERSION_STR "\n"
@ -211,7 +212,8 @@ static void wpa_supplicant_timeout(void *eloop_ctx, void *timeout_ctx)
void wpa_supplicant_req_auth_timeout(struct wpa_supplicant *wpa_s,
int sec, int usec)
{
if (wpa_s->conf && wpa_s->conf->ap_scan == 0 && wpa_s->drv_wired)
if (wpa_s->conf && wpa_s->conf->ap_scan == 0 &&
(wpa_s->drv_flags & WPA_DRIVER_FLAGS_WIRED))
return;
wpa_msg(wpa_s, MSG_DEBUG, "Setting authentication timeout: %d sec "
@ -286,7 +288,7 @@ void wpa_supplicant_initiate_eapol(struct wpa_supplicant *wpa_s)
EAPOL_REQUIRE_KEY_BROADCAST;
}
if (wpa_s->conf && wpa_s->drv_wired)
if (wpa_s->conf && (wpa_s->drv_flags & WPA_DRIVER_FLAGS_WIRED))
eapol_conf.required_keys = 0;
}
if (wpa_s->conf)
@ -404,6 +406,12 @@ static void wpa_supplicant_cleanup(struct wpa_supplicant *wpa_s)
ibss_rsn_deinit(wpa_s->ibss_rsn);
wpa_s->ibss_rsn = NULL;
#endif /* CONFIG_IBSS_RSN */
#ifdef CONFIG_SME
os_free(wpa_s->sme.ft_ies);
wpa_s->sme.ft_ies = NULL;
wpa_s->sme.ft_ies_len = 0;
#endif /* CONFIG_SME */
}
@ -464,6 +472,8 @@ const char * wpa_supplicant_state_txt(int state)
return "INACTIVE";
case WPA_SCANNING:
return "SCANNING";
case WPA_AUTHENTICATING:
return "AUTHENTICATING";
case WPA_ASSOCIATING:
return "ASSOCIATING";
case WPA_ASSOCIATED:
@ -930,6 +940,11 @@ void wpa_supplicant_associate(struct wpa_supplicant *wpa_s,
struct wpa_driver_capa capa;
int assoc_failed = 0;
if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_SME) {
sme_authenticate(wpa_s, bss, ssid);
return;
}
wpa_s->reassociate = 0;
if (bss) {
#ifdef CONFIG_IEEE80211R
@ -1119,7 +1134,7 @@ void wpa_supplicant_associate(struct wpa_supplicant *wpa_s,
}
params.wep_tx_keyidx = ssid->wep_tx_keyidx;
if (wpa_s->driver_4way_handshake &&
if ((wpa_s->drv_flags & WPA_DRIVER_FLAGS_4WAY_HANDSHAKE) &&
(params.key_mgmt_suite == KEY_MGMT_PSK ||
params.key_mgmt_suite == KEY_MGMT_FT_PSK)) {
params.passphrase = ssid->passphrase;
@ -1153,7 +1168,7 @@ void wpa_supplicant_associate(struct wpa_supplicant *wpa_s,
}
#endif /* CONFIG_IEEE80211W */
if (wpa_s->use_client_mlme)
if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_USER_SPACE_MLME)
ret = ieee80211_sta_associate(wpa_s, &params);
else
ret = wpa_drv_associate(wpa_s, &params);
@ -1231,7 +1246,7 @@ void wpa_supplicant_disassociate(struct wpa_supplicant *wpa_s,
{
u8 *addr = NULL;
if (!is_zero_ether_addr(wpa_s->bssid)) {
if (wpa_s->use_client_mlme)
if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_USER_SPACE_MLME)
ieee80211_sta_disassociate(wpa_s, reason_code);
else
wpa_drv_disassociate(wpa_s, wpa_s->bssid, reason_code);
@ -1259,7 +1274,7 @@ void wpa_supplicant_deauthenticate(struct wpa_supplicant *wpa_s,
u8 *addr = NULL;
wpa_supplicant_set_state(wpa_s, WPA_DISCONNECTED);
if (!is_zero_ether_addr(wpa_s->bssid)) {
if (wpa_s->use_client_mlme)
if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_USER_SPACE_MLME)
ieee80211_sta_deauthenticate(wpa_s, reason_code);
else
wpa_drv_deauthenticate(wpa_s, wpa_s->bssid,
@ -1395,7 +1410,7 @@ int wpa_supplicant_get_scan_results(struct wpa_supplicant *wpa_s)
{
int ret;
if (wpa_s->use_client_mlme) {
if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_USER_SPACE_MLME) {
wpa_scan_results_free(wpa_s->scan_res);
wpa_s->scan_res = ieee80211_sta_get_scan_results(wpa_s);
if (wpa_s->scan_res == NULL) {
@ -1436,7 +1451,7 @@ struct wpa_ssid * wpa_supplicant_get_ssid(struct wpa_supplicant *wpa_s)
u8 bssid[ETH_ALEN];
int wired;
if (wpa_s->use_client_mlme) {
if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_USER_SPACE_MLME) {
if (ieee80211_sta_get_ssid(wpa_s, ssid, &ssid_len)) {
wpa_printf(MSG_WARNING, "Could not read SSID from "
"MLME.");
@ -1452,14 +1467,15 @@ struct wpa_ssid * wpa_supplicant_get_ssid(struct wpa_supplicant *wpa_s)
ssid_len = res;
}
if (wpa_s->use_client_mlme)
if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_USER_SPACE_MLME)
os_memcpy(bssid, wpa_s->bssid, ETH_ALEN);
else if (wpa_drv_get_bssid(wpa_s, bssid) < 0) {
wpa_printf(MSG_WARNING, "Could not read BSSID from driver.");
return NULL;
}
wired = wpa_s->conf->ap_scan == 0 && wpa_s->drv_wired;
wired = wpa_s->conf->ap_scan == 0 &&
(wpa_s->drv_flags & WPA_DRIVER_FLAGS_WIRED);
entry = wpa_s->conf->ssid;
while (entry) {
@ -1540,7 +1556,7 @@ void wpa_supplicant_rx_eapol(void *ctx, const u8 *src_addr,
}
if (wpa_s->eapol_received == 0 &&
(!wpa_s->driver_4way_handshake ||
(!(wpa_s->drv_flags & WPA_DRIVER_FLAGS_4WAY_HANDSHAKE) ||
!wpa_key_mgmt_wpa_psk(wpa_s->key_mgmt) ||
wpa_s->wpa_state != WPA_COMPLETED)) {
/* Timeout for completing IEEE 802.1X and WPA authentication */
@ -1578,7 +1594,7 @@ void wpa_supplicant_rx_eapol(void *ctx, const u8 *src_addr,
eapol_sm_rx_eapol(wpa_s->eapol, src_addr, buf, len) > 0)
return;
wpa_drv_poll(wpa_s);
if (!wpa_s->driver_4way_handshake)
if (!(wpa_s->drv_flags & WPA_DRIVER_FLAGS_4WAY_HANDSHAKE))
wpa_sm_rx_eapol(wpa_s->wpa, src_addr, buf, len);
else if (wpa_key_mgmt_wpa_ieee8021x(wpa_s->key_mgmt)) {
/*
@ -1897,16 +1913,12 @@ next_driver:
}
if (wpa_drv_get_capa(wpa_s, &capa) == 0) {
wpa_s->drv_flags = capa.flags;
if (capa.flags & WPA_DRIVER_FLAGS_USER_SPACE_MLME) {
wpa_s->use_client_mlme = 1;
if (ieee80211_sta_init(wpa_s))
return -1;
}
if (capa.flags & WPA_DRIVER_FLAGS_4WAY_HANDSHAKE)
wpa_s->driver_4way_handshake = 1;
wpa_s->max_scan_ssids = capa.max_scan_ssids;
if (capa.flags & WPA_DRIVER_FLAGS_WIRED)
wpa_s->drv_wired = 1;
}
#ifdef CONFIG_IBSS_RSN

27
wpa_supplicant/wpa_supplicant_i.h
View file

@ -311,7 +311,6 @@ struct wpa_supplicant {
int mgmt_group_cipher;
void *drv_priv; /* private data used by driver_ops */
int drv_wired;
struct wpa_ssid *prev_scan_ssid; /* previously scanned SSID;
* NULL = not yet initialized (start
@ -355,8 +354,7 @@ struct wpa_supplicant {
int scan_runs; /* number of scan runs since WPS was started */
struct wpa_client_mlme mlme;
int use_client_mlme;
int driver_4way_handshake;
unsigned int drv_flags;
int max_scan_ssids;
int pending_mic_error_report;
@ -368,6 +366,21 @@ struct wpa_supplicant {
int blacklist_cleared;
struct ibss_rsn *ibss_rsn;
#ifdef CONFIG_SME
struct {
u8 ssid[32];
size_t ssid_len;
int freq;
u8 assoc_req_ie[80];
size_t assoc_req_ie_len;
int mfp;
int ft_used;
u8 mobility_domain[2];
u8 *ft_ies;
size_t ft_ies_len;
} sme;
#endif /* CONFIG_SME */
};
@ -492,6 +505,14 @@ static inline int wpa_drv_set_mode(struct wpa_supplicant *wpa_s, int mode)
return 0;
}
static inline int wpa_drv_authenticate(struct wpa_supplicant *wpa_s,
struct wpa_driver_auth_params *params)
{
if (wpa_s->driver->authenticate)
return wpa_s->driver->authenticate(wpa_s->drv_priv, params);
return -1;
}
static inline int wpa_drv_associate(struct wpa_supplicant *wpa_s,
struct wpa_driver_associate_params *params)
{

11
wpa_supplicant/wpas_glue.c
View file

@ -24,6 +24,7 @@
#include "wpa_supplicant_i.h"
#include "pmksa_cache.h"
#include "mlme.h"
#include "sme.h"
#include "ieee802_11_defs.h"
#include "wpa_ctrl.h"
#include "wpas_glue.h"
@ -241,7 +242,7 @@ static void wpa_supplicant_eapol_cb(struct eapol_sm *eapol, int success,
wpa_supplicant_req_auth_timeout(wpa_s, 2, 0);
}
if (!success || !wpa_s->driver_4way_handshake)
if (!success || !(wpa_s->drv_flags & WPA_DRIVER_FLAGS_4WAY_HANDSHAKE))
return;
if (!wpa_key_mgmt_wpa_ieee8021x(wpa_s->key_mgmt))
@ -423,7 +424,7 @@ static void * wpa_supplicant_get_network_ctx(void *wpa_s)
static int wpa_supplicant_get_bssid(void *ctx, u8 *bssid)
{
struct wpa_supplicant *wpa_s = ctx;
if (wpa_s->use_client_mlme) {
if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_USER_SPACE_MLME) {
os_memcpy(bssid, wpa_s->bssid, ETH_ALEN);
return 0;
}
@ -474,8 +475,10 @@ static int wpa_supplicant_update_ft_ies(void *ctx, const u8 *md,
const u8 *ies, size_t ies_len)
{
struct wpa_supplicant *wpa_s = ctx;
if (wpa_s->use_client_mlme)
if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_USER_SPACE_MLME)
return ieee80211_sta_update_ft_ies(wpa_s, md, ies, ies_len);
if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_SME)
return sme_update_ft_ies(wpa_s, md, ies, ies_len);
return wpa_drv_update_ft_ies(wpa_s, md, ies, ies_len);
}
@ -485,7 +488,7 @@ static int wpa_supplicant_send_ft_action(void *ctx, u8 action,
const u8 *ies, size_t ies_len)
{
struct wpa_supplicant *wpa_s = ctx;
if (wpa_s->use_client_mlme)
if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_USER_SPACE_MLME)
return ieee80211_sta_send_ft_action(wpa_s, action, target_ap,
ies, ies_len);
return wpa_drv_send_ft_action(wpa_s, action, target_ap, ies, ies_len);