From c2a04078513bffce2e3c2968fbb1e1381ab72059 Mon Sep 17 00:00:00 2001 From: Jouni Malinen Date: Fri, 20 Mar 2009 22:26:41 +0200 Subject: [PATCH] Add SME support (separate authentication and association) 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. --- src/common/defs.h | 10 + src/drivers/driver.h | 70 ++++- src/drivers/driver_ndis.c | 3 +- src/drivers/driver_nl80211.c | 430 +++++++++++++++++++++++++++--- src/drivers/driver_privsep.c | 3 +- src/drivers/driver_test.c | 3 +- wpa_supplicant/ChangeLog | 4 + wpa_supplicant/Makefile | 6 + wpa_supplicant/events.c | 83 +++++- wpa_supplicant/scan.c | 11 +- wpa_supplicant/sme.c | 337 +++++++++++++++++++++++ wpa_supplicant/sme.h | 46 ++++ wpa_supplicant/wpa_supplicant.c | 46 ++-- wpa_supplicant/wpa_supplicant_i.h | 27 +- wpa_supplicant/wpas_glue.c | 11 +- 15 files changed, 1023 insertions(+), 67 deletions(-) create mode 100644 wpa_supplicant/sme.c create mode 100644 wpa_supplicant/sme.h diff --git a/src/common/defs.h b/src/common/defs.h index 4930e73e7..cee8c240c 100644 --- a/src/common/defs.h +++ b/src/common/defs.h @@ -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 * diff --git a/src/drivers/driver.h b/src/drivers/driver.h index 39f100018..e3f9cd710 100644 --- a/src/drivers/driver.h +++ b/src/drivers/driver.h @@ -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; }; /** diff --git a/src/drivers/driver_ndis.c b/src/drivers/driver_ndis.c index b6690b6b4..879bf103c 100644 --- a/src/drivers/driver_ndis.c +++ b/src/drivers/driver_ndis.c @@ -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 */ }; diff --git a/src/drivers/driver_nl80211.c b/src/drivers/driver_nl80211.c index 2f530b2e4..45fd7b846 100644 --- a/src/drivers/driver_nl80211.c +++ b/src/drivers/driver_nl80211.c @@ -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; }; @@ -300,19 +316,27 @@ 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; - struct iwreq iwr; - int ret = 0; +#ifdef WEXT_COMPAT + if (!(drv->capa.flags & WPA_DRIVER_FLAGS_SME)) { + struct iwreq iwr; + int ret = 0; - os_memset(&iwr, 0, sizeof(iwr)); - os_strlcpy(iwr.ifr_name, drv->ifname, IFNAMSIZ); + os_memset(&iwr, 0, sizeof(iwr)); + os_strlcpy(iwr.ifr_name, drv->ifname, IFNAMSIZ); - if (ioctl(drv->ioctl_sock, SIOCGIWAP, &iwr) < 0) { - perror("ioctl[SIOCGIWAP]"); - ret = -1; + if (ioctl(drv->ioctl_sock, SIOCGIWAP, &iwr) < 0) { + perror("ioctl[SIOCGIWAP]"); + ret = -1; + } + os_memcpy(bssid, iwr.u.ap_addr.sa_data, ETH_ALEN); + + return ret; } - os_memcpy(bssid, iwr.u.ap_addr.sa_data, ETH_ALEN); - - return ret; +#endif /* WEXT_COMPAT */ + if (!drv->associated) + return -1; + os_memcpy(bssid, drv->bssid, ETH_ALEN); + return 0; } @@ -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; @@ -2045,27 +2227,73 @@ 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) + 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); } static int wpa_driver_nl80211_disassociate(void *priv, const u8 *addr, - int reason_code) + 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, - 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_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 */ }; diff --git a/src/drivers/driver_privsep.c b/src/drivers/driver_privsep.c index d1bfe29df..4895f967f 100644 --- a/src/drivers/driver_privsep.c +++ b/src/drivers/driver_privsep.c @@ -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 */ }; diff --git a/src/drivers/driver_test.c b/src/drivers/driver_test.c index deaf57419..b8bc0b0ff 100644 --- a/src/drivers/driver_test.c +++ b/src/drivers/driver_test.c @@ -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 */ }; diff --git a/wpa_supplicant/ChangeLog b/wpa_supplicant/ChangeLog index efdda65a9..795194dda 100644 --- a/wpa_supplicant/ChangeLog +++ b/wpa_supplicant/ChangeLog @@ -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) diff --git a/wpa_supplicant/Makefile b/wpa_supplicant/Makefile index 24a2e3dd7..7ef119ff7 100644 --- a/wpa_supplicant/Makefile +++ b/wpa_supplicant/Makefile @@ -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 diff --git a/wpa_supplicant/events.c b/wpa_supplicant/events.c index b47ea9d1d..73ce83a3a 100644 --- a/wpa_supplicant/events.c +++ b/wpa_supplicant/events.c @@ -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; diff --git a/wpa_supplicant/scan.c b/wpa_supplicant/scan.c index 48f2da10e..4b3904401 100644 --- a/wpa_supplicant/scan.c +++ b/wpa_supplicant/scan.c @@ -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, diff --git a/wpa_supplicant/sme.c b/wpa_supplicant/sme.c new file mode 100644 index 000000000..370f96af9 --- /dev/null +++ b/wpa_supplicant/sme.c @@ -0,0 +1,337 @@ +/* + * wpa_supplicant - SME + * Copyright (c) 2009, Jouni Malinen + * + * 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(¶ms, 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, ¶ms) < 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(¶ms, 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, ¶ms) < 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; +} diff --git a/wpa_supplicant/sme.h b/wpa_supplicant/sme.h new file mode 100644 index 000000000..ce1b2dcbb --- /dev/null +++ b/wpa_supplicant/sme.h @@ -0,0 +1,46 @@ +/* + * wpa_supplicant - SME + * Copyright (c) 2009, Jouni Malinen + * + * 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 */ diff --git a/wpa_supplicant/wpa_supplicant.c b/wpa_supplicant/wpa_supplicant.c index c9584cabe..908f5ca83 100644 --- a/wpa_supplicant/wpa_supplicant.c +++ b/wpa_supplicant/wpa_supplicant.c @@ -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, ¶ms); else ret = wpa_drv_associate(wpa_s, ¶ms); @@ -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 diff --git a/wpa_supplicant/wpa_supplicant_i.h b/wpa_supplicant/wpa_supplicant_i.h index eddd41e5a..ff012b9c4 100644 --- a/wpa_supplicant/wpa_supplicant_i.h +++ b/wpa_supplicant/wpa_supplicant_i.h @@ -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) { diff --git a/wpa_supplicant/wpas_glue.c b/wpa_supplicant/wpas_glue.c index eb2796e94..4e021d2aa 100644 --- a/wpa_supplicant/wpas_glue.c +++ b/wpa_supplicant/wpas_glue.c @@ -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);