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wpas_glue.c revision 1.1.1.1
      1  1.1  christos /*
      2  1.1  christos  * WPA Supplicant - Glue code to setup EAPOL and RSN modules
      3  1.1  christos  * Copyright (c) 2003-2008, Jouni Malinen <j (at) w1.fi>
      4  1.1  christos  *
      5  1.1  christos  * This program is free software; you can redistribute it and/or modify
      6  1.1  christos  * it under the terms of the GNU General Public License version 2 as
      7  1.1  christos  * published by the Free Software Foundation.
      8  1.1  christos  *
      9  1.1  christos  * Alternatively, this software may be distributed under the terms of BSD
     10  1.1  christos  * license.
     11  1.1  christos  *
     12  1.1  christos  * See README and COPYING for more details.
     13  1.1  christos  */
     14  1.1  christos 
     15  1.1  christos #include "includes.h"
     16  1.1  christos 
     17  1.1  christos #include "common.h"
     18  1.1  christos #include "eapol_supp/eapol_supp_sm.h"
     19  1.1  christos #include "rsn_supp/wpa.h"
     20  1.1  christos #include "eloop.h"
     21  1.1  christos #include "config.h"
     22  1.1  christos #include "l2_packet/l2_packet.h"
     23  1.1  christos #include "common/wpa_common.h"
     24  1.1  christos #include "wpa_supplicant_i.h"
     25  1.1  christos #include "driver_i.h"
     26  1.1  christos #include "rsn_supp/pmksa_cache.h"
     27  1.1  christos #include "mlme.h"
     28  1.1  christos #include "sme.h"
     29  1.1  christos #include "common/ieee802_11_defs.h"
     30  1.1  christos #include "common/wpa_ctrl.h"
     31  1.1  christos #include "wpas_glue.h"
     32  1.1  christos #include "wps_supplicant.h"
     33  1.1  christos #include "bss.h"
     34  1.1  christos #include "scan.h"
     35  1.1  christos 
     36  1.1  christos 
     37  1.1  christos #ifndef CONFIG_NO_CONFIG_BLOBS
     38  1.1  christos #if defined(IEEE8021X_EAPOL) || !defined(CONFIG_NO_WPA)
     39  1.1  christos static void wpa_supplicant_set_config_blob(void *ctx,
     40  1.1  christos 					   struct wpa_config_blob *blob)
     41  1.1  christos {
     42  1.1  christos 	struct wpa_supplicant *wpa_s = ctx;
     43  1.1  christos 	wpa_config_set_blob(wpa_s->conf, blob);
     44  1.1  christos 	if (wpa_s->conf->update_config) {
     45  1.1  christos 		int ret = wpa_config_write(wpa_s->confname, wpa_s->conf);
     46  1.1  christos 		if (ret) {
     47  1.1  christos 			wpa_printf(MSG_DEBUG, "Failed to update config after "
     48  1.1  christos 				   "blob set");
     49  1.1  christos 		}
     50  1.1  christos 	}
     51  1.1  christos }
     52  1.1  christos 
     53  1.1  christos 
     54  1.1  christos static const struct wpa_config_blob *
     55  1.1  christos wpa_supplicant_get_config_blob(void *ctx, const char *name)
     56  1.1  christos {
     57  1.1  christos 	struct wpa_supplicant *wpa_s = ctx;
     58  1.1  christos 	return wpa_config_get_blob(wpa_s->conf, name);
     59  1.1  christos }
     60  1.1  christos #endif /* defined(IEEE8021X_EAPOL) || !defined(CONFIG_NO_WPA) */
     61  1.1  christos #endif /* CONFIG_NO_CONFIG_BLOBS */
     62  1.1  christos 
     63  1.1  christos 
     64  1.1  christos #if defined(IEEE8021X_EAPOL) || !defined(CONFIG_NO_WPA)
     65  1.1  christos static u8 * wpa_alloc_eapol(const struct wpa_supplicant *wpa_s, u8 type,
     66  1.1  christos 			    const void *data, u16 data_len,
     67  1.1  christos 			    size_t *msg_len, void **data_pos)
     68  1.1  christos {
     69  1.1  christos 	struct ieee802_1x_hdr *hdr;
     70  1.1  christos 
     71  1.1  christos 	*msg_len = sizeof(*hdr) + data_len;
     72  1.1  christos 	hdr = os_malloc(*msg_len);
     73  1.1  christos 	if (hdr == NULL)
     74  1.1  christos 		return NULL;
     75  1.1  christos 
     76  1.1  christos 	hdr->version = wpa_s->conf->eapol_version;
     77  1.1  christos 	hdr->type = type;
     78  1.1  christos 	hdr->length = host_to_be16(data_len);
     79  1.1  christos 
     80  1.1  christos 	if (data)
     81  1.1  christos 		os_memcpy(hdr + 1, data, data_len);
     82  1.1  christos 	else
     83  1.1  christos 		os_memset(hdr + 1, 0, data_len);
     84  1.1  christos 
     85  1.1  christos 	if (data_pos)
     86  1.1  christos 		*data_pos = hdr + 1;
     87  1.1  christos 
     88  1.1  christos 	return (u8 *) hdr;
     89  1.1  christos }
     90  1.1  christos 
     91  1.1  christos 
     92  1.1  christos /**
     93  1.1  christos  * wpa_ether_send - Send Ethernet frame
     94  1.1  christos  * @wpa_s: Pointer to wpa_supplicant data
     95  1.1  christos  * @dest: Destination MAC address
     96  1.1  christos  * @proto: Ethertype in host byte order
     97  1.1  christos  * @buf: Frame payload starting from IEEE 802.1X header
     98  1.1  christos  * @len: Frame payload length
     99  1.1  christos  * Returns: >=0 on success, <0 on failure
    100  1.1  christos  */
    101  1.1  christos static int wpa_ether_send(struct wpa_supplicant *wpa_s, const u8 *dest,
    102  1.1  christos 			  u16 proto, const u8 *buf, size_t len)
    103  1.1  christos {
    104  1.1  christos 	if (wpa_s->l2) {
    105  1.1  christos 		return l2_packet_send(wpa_s->l2, dest, proto, buf, len);
    106  1.1  christos 	}
    107  1.1  christos 
    108  1.1  christos 	return wpa_drv_send_eapol(wpa_s, dest, proto, buf, len);
    109  1.1  christos }
    110  1.1  christos #endif /* IEEE8021X_EAPOL || !CONFIG_NO_WPA */
    111  1.1  christos 
    112  1.1  christos 
    113  1.1  christos #ifdef IEEE8021X_EAPOL
    114  1.1  christos 
    115  1.1  christos /**
    116  1.1  christos  * wpa_supplicant_eapol_send - Send IEEE 802.1X EAPOL packet to Authenticator
    117  1.1  christos  * @ctx: Pointer to wpa_supplicant data (wpa_s)
    118  1.1  christos  * @type: IEEE 802.1X packet type (IEEE802_1X_TYPE_*)
    119  1.1  christos  * @buf: EAPOL payload (after IEEE 802.1X header)
    120  1.1  christos  * @len: EAPOL payload length
    121  1.1  christos  * Returns: >=0 on success, <0 on failure
    122  1.1  christos  *
    123  1.1  christos  * This function adds Ethernet and IEEE 802.1X header and sends the EAPOL frame
    124  1.1  christos  * to the current Authenticator.
    125  1.1  christos  */
    126  1.1  christos static int wpa_supplicant_eapol_send(void *ctx, int type, const u8 *buf,
    127  1.1  christos 				     size_t len)
    128  1.1  christos {
    129  1.1  christos 	struct wpa_supplicant *wpa_s = ctx;
    130  1.1  christos 	u8 *msg, *dst, bssid[ETH_ALEN];
    131  1.1  christos 	size_t msglen;
    132  1.1  christos 	int res;
    133  1.1  christos 
    134  1.1  christos 	/* TODO: could add l2_packet_sendmsg that allows fragments to avoid
    135  1.1  christos 	 * extra copy here */
    136  1.1  christos 
    137  1.1  christos 	if (wpa_key_mgmt_wpa_psk(wpa_s->key_mgmt) ||
    138  1.1  christos 	    wpa_s->key_mgmt == WPA_KEY_MGMT_NONE) {
    139  1.1  christos 		/* Current SSID is not using IEEE 802.1X/EAP, so drop possible
    140  1.1  christos 		 * EAPOL frames (mainly, EAPOL-Start) from EAPOL state
    141  1.1  christos 		 * machines. */
    142  1.1  christos 		wpa_printf(MSG_DEBUG, "WPA: drop TX EAPOL in non-IEEE 802.1X "
    143  1.1  christos 			   "mode (type=%d len=%lu)", type,
    144  1.1  christos 			   (unsigned long) len);
    145  1.1  christos 		return -1;
    146  1.1  christos 	}
    147  1.1  christos 
    148  1.1  christos 	if (pmksa_cache_get_current(wpa_s->wpa) &&
    149  1.1  christos 	    type == IEEE802_1X_TYPE_EAPOL_START) {
    150  1.1  christos 		/* Trying to use PMKSA caching - do not send EAPOL-Start frames
    151  1.1  christos 		 * since they will trigger full EAPOL authentication. */
    152  1.1  christos 		wpa_printf(MSG_DEBUG, "RSN: PMKSA caching - do not send "
    153  1.1  christos 			   "EAPOL-Start");
    154  1.1  christos 		return -1;
    155  1.1  christos 	}
    156  1.1  christos 
    157  1.1  christos 	if (is_zero_ether_addr(wpa_s->bssid)) {
    158  1.1  christos 		wpa_printf(MSG_DEBUG, "BSSID not set when trying to send an "
    159  1.1  christos 			   "EAPOL frame");
    160  1.1  christos 		if (wpa_drv_get_bssid(wpa_s, bssid) == 0 &&
    161  1.1  christos 		    !is_zero_ether_addr(bssid)) {
    162  1.1  christos 			dst = bssid;
    163  1.1  christos 			wpa_printf(MSG_DEBUG, "Using current BSSID " MACSTR
    164  1.1  christos 				   " from the driver as the EAPOL destination",
    165  1.1  christos 				   MAC2STR(dst));
    166  1.1  christos 		} else {
    167  1.1  christos 			dst = wpa_s->last_eapol_src;
    168  1.1  christos 			wpa_printf(MSG_DEBUG, "Using the source address of the"
    169  1.1  christos 				   " last received EAPOL frame " MACSTR " as "
    170  1.1  christos 				   "the EAPOL destination",
    171  1.1  christos 				   MAC2STR(dst));
    172  1.1  christos 		}
    173  1.1  christos 	} else {
    174  1.1  christos 		/* BSSID was already set (from (Re)Assoc event, so use it as
    175  1.1  christos 		 * the EAPOL destination. */
    176  1.1  christos 		dst = wpa_s->bssid;
    177  1.1  christos 	}
    178  1.1  christos 
    179  1.1  christos 	msg = wpa_alloc_eapol(wpa_s, type, buf, len, &msglen, NULL);
    180  1.1  christos 	if (msg == NULL)
    181  1.1  christos 		return -1;
    182  1.1  christos 
    183  1.1  christos 	wpa_printf(MSG_DEBUG, "TX EAPOL: dst=" MACSTR, MAC2STR(dst));
    184  1.1  christos 	wpa_hexdump(MSG_MSGDUMP, "TX EAPOL", msg, msglen);
    185  1.1  christos 	res = wpa_ether_send(wpa_s, dst, ETH_P_EAPOL, msg, msglen);
    186  1.1  christos 	os_free(msg);
    187  1.1  christos 	return res;
    188  1.1  christos }
    189  1.1  christos 
    190  1.1  christos 
    191  1.1  christos /**
    192  1.1  christos  * wpa_eapol_set_wep_key - set WEP key for the driver
    193  1.1  christos  * @ctx: Pointer to wpa_supplicant data (wpa_s)
    194  1.1  christos  * @unicast: 1 = individual unicast key, 0 = broadcast key
    195  1.1  christos  * @keyidx: WEP key index (0..3)
    196  1.1  christos  * @key: Pointer to key data
    197  1.1  christos  * @keylen: Key length in bytes
    198  1.1  christos  * Returns: 0 on success or < 0 on error.
    199  1.1  christos  */
    200  1.1  christos static int wpa_eapol_set_wep_key(void *ctx, int unicast, int keyidx,
    201  1.1  christos 				 const u8 *key, size_t keylen)
    202  1.1  christos {
    203  1.1  christos 	struct wpa_supplicant *wpa_s = ctx;
    204  1.1  christos 	if (wpa_s->key_mgmt == WPA_KEY_MGMT_IEEE8021X_NO_WPA) {
    205  1.1  christos 		int cipher = (keylen == 5) ? WPA_CIPHER_WEP40 :
    206  1.1  christos 			WPA_CIPHER_WEP104;
    207  1.1  christos 		if (unicast)
    208  1.1  christos 			wpa_s->pairwise_cipher = cipher;
    209  1.1  christos 		else
    210  1.1  christos 			wpa_s->group_cipher = cipher;
    211  1.1  christos 	}
    212  1.1  christos 	return wpa_drv_set_key(wpa_s, WPA_ALG_WEP,
    213  1.1  christos 			       unicast ? wpa_s->bssid :
    214  1.1  christos 			       (u8 *) "\xff\xff\xff\xff\xff\xff",
    215  1.1  christos 			       keyidx, unicast, (u8 *) "", 0, key, keylen);
    216  1.1  christos }
    217  1.1  christos 
    218  1.1  christos 
    219  1.1  christos static void wpa_supplicant_aborted_cached(void *ctx)
    220  1.1  christos {
    221  1.1  christos 	struct wpa_supplicant *wpa_s = ctx;
    222  1.1  christos 	wpa_sm_aborted_cached(wpa_s->wpa);
    223  1.1  christos }
    224  1.1  christos 
    225  1.1  christos 
    226  1.1  christos static void wpa_supplicant_eapol_cb(struct eapol_sm *eapol, int success,
    227  1.1  christos 				    void *ctx)
    228  1.1  christos {
    229  1.1  christos 	struct wpa_supplicant *wpa_s = ctx;
    230  1.1  christos 	int res, pmk_len;
    231  1.1  christos 	u8 pmk[PMK_LEN];
    232  1.1  christos 
    233  1.1  christos 	wpa_printf(MSG_DEBUG, "EAPOL authentication completed %ssuccessfully",
    234  1.1  christos 		   success ? "" : "un");
    235  1.1  christos 
    236  1.1  christos 	if (wpas_wps_eapol_cb(wpa_s) > 0)
    237  1.1  christos 		return;
    238  1.1  christos 
    239  1.1  christos 	if (!success) {
    240  1.1  christos 		/*
    241  1.1  christos 		 * Make sure we do not get stuck here waiting for long EAPOL
    242  1.1  christos 		 * timeout if the AP does not disconnect in case of
    243  1.1  christos 		 * authentication failure.
    244  1.1  christos 		 */
    245  1.1  christos 		wpa_supplicant_req_auth_timeout(wpa_s, 2, 0);
    246  1.1  christos 	}
    247  1.1  christos 
    248  1.1  christos 	if (!success || !(wpa_s->drv_flags & WPA_DRIVER_FLAGS_4WAY_HANDSHAKE))
    249  1.1  christos 		return;
    250  1.1  christos 
    251  1.1  christos 	if (!wpa_key_mgmt_wpa_ieee8021x(wpa_s->key_mgmt))
    252  1.1  christos 		return;
    253  1.1  christos 
    254  1.1  christos 	wpa_printf(MSG_DEBUG, "Configure PMK for driver-based RSN 4-way "
    255  1.1  christos 		   "handshake");
    256  1.1  christos 
    257  1.1  christos 	pmk_len = PMK_LEN;
    258  1.1  christos 	res = eapol_sm_get_key(eapol, pmk, PMK_LEN);
    259  1.1  christos 	if (res) {
    260  1.1  christos 		/*
    261  1.1  christos 		 * EAP-LEAP is an exception from other EAP methods: it
    262  1.1  christos 		 * uses only 16-byte PMK.
    263  1.1  christos 		 */
    264  1.1  christos 		res = eapol_sm_get_key(eapol, pmk, 16);
    265  1.1  christos 		pmk_len = 16;
    266  1.1  christos 	}
    267  1.1  christos 
    268  1.1  christos 	if (res) {
    269  1.1  christos 		wpa_printf(MSG_DEBUG, "Failed to get PMK from EAPOL state "
    270  1.1  christos 			   "machines");
    271  1.1  christos 		return;
    272  1.1  christos 	}
    273  1.1  christos 
    274  1.1  christos 	if (wpa_drv_set_key(wpa_s, WPA_ALG_PMK, NULL, 0, 0, NULL, 0, pmk,
    275  1.1  christos 			    pmk_len)) {
    276  1.1  christos 		wpa_printf(MSG_DEBUG, "Failed to set PMK to the driver");
    277  1.1  christos 	}
    278  1.1  christos 
    279  1.1  christos 	wpa_supplicant_cancel_scan(wpa_s);
    280  1.1  christos 	wpa_supplicant_cancel_auth_timeout(wpa_s);
    281  1.1  christos 	wpa_supplicant_set_state(wpa_s, WPA_COMPLETED);
    282  1.1  christos 
    283  1.1  christos }
    284  1.1  christos 
    285  1.1  christos 
    286  1.1  christos static void wpa_supplicant_notify_eapol_done(void *ctx)
    287  1.1  christos {
    288  1.1  christos 	struct wpa_supplicant *wpa_s = ctx;
    289  1.1  christos 	wpa_msg(wpa_s, MSG_DEBUG, "WPA: EAPOL processing complete");
    290  1.1  christos 	if (wpa_key_mgmt_wpa_ieee8021x(wpa_s->key_mgmt)) {
    291  1.1  christos 		wpa_supplicant_set_state(wpa_s, WPA_4WAY_HANDSHAKE);
    292  1.1  christos 	} else {
    293  1.1  christos 		wpa_supplicant_cancel_auth_timeout(wpa_s);
    294  1.1  christos 		wpa_supplicant_set_state(wpa_s, WPA_COMPLETED);
    295  1.1  christos 	}
    296  1.1  christos }
    297  1.1  christos 
    298  1.1  christos #endif /* IEEE8021X_EAPOL */
    299  1.1  christos 
    300  1.1  christos 
    301  1.1  christos #ifndef CONFIG_NO_WPA
    302  1.1  christos 
    303  1.1  christos static int wpa_get_beacon_ie(struct wpa_supplicant *wpa_s)
    304  1.1  christos {
    305  1.1  christos 	int ret = 0;
    306  1.1  christos 	struct wpa_bss *curr = NULL, *bss;
    307  1.1  christos 	struct wpa_ssid *ssid = wpa_s->current_ssid;
    308  1.1  christos 	const u8 *ie;
    309  1.1  christos 
    310  1.1  christos 	dl_list_for_each(bss, &wpa_s->bss, struct wpa_bss, list) {
    311  1.1  christos 		if (os_memcmp(bss->bssid, wpa_s->bssid, ETH_ALEN) != 0)
    312  1.1  christos 			continue;
    313  1.1  christos 		if (ssid == NULL ||
    314  1.1  christos 		    ((bss->ssid_len == ssid->ssid_len &&
    315  1.1  christos 		      os_memcmp(bss->ssid, ssid->ssid, ssid->ssid_len) == 0) ||
    316  1.1  christos 		     ssid->ssid_len == 0)) {
    317  1.1  christos 			curr = bss;
    318  1.1  christos 			break;
    319  1.1  christos 		}
    320  1.1  christos 	}
    321  1.1  christos 
    322  1.1  christos 	if (curr) {
    323  1.1  christos 		ie = wpa_bss_get_vendor_ie(curr, WPA_IE_VENDOR_TYPE);
    324  1.1  christos 		if (wpa_sm_set_ap_wpa_ie(wpa_s->wpa, ie, ie ? 2 + ie[1] : 0))
    325  1.1  christos 			ret = -1;
    326  1.1  christos 
    327  1.1  christos 		ie = wpa_bss_get_ie(curr, WLAN_EID_RSN);
    328  1.1  christos 		if (wpa_sm_set_ap_rsn_ie(wpa_s->wpa, ie, ie ? 2 + ie[1] : 0))
    329  1.1  christos 			ret = -1;
    330  1.1  christos 	} else {
    331  1.1  christos 		ret = -1;
    332  1.1  christos 	}
    333  1.1  christos 
    334  1.1  christos 	return ret;
    335  1.1  christos }
    336  1.1  christos 
    337  1.1  christos 
    338  1.1  christos static int wpa_supplicant_get_beacon_ie(void *ctx)
    339  1.1  christos {
    340  1.1  christos 	struct wpa_supplicant *wpa_s = ctx;
    341  1.1  christos 	if (wpa_get_beacon_ie(wpa_s) == 0) {
    342  1.1  christos 		return 0;
    343  1.1  christos 	}
    344  1.1  christos 
    345  1.1  christos 	/* No WPA/RSN IE found in the cached scan results. Try to get updated
    346  1.1  christos 	 * scan results from the driver. */
    347  1.1  christos 	if (wpa_supplicant_update_scan_results(wpa_s) < 0)
    348  1.1  christos 		return -1;
    349  1.1  christos 
    350  1.1  christos 	return wpa_get_beacon_ie(wpa_s);
    351  1.1  christos }
    352  1.1  christos 
    353  1.1  christos 
    354  1.1  christos static u8 * _wpa_alloc_eapol(void *wpa_s, u8 type,
    355  1.1  christos 			     const void *data, u16 data_len,
    356  1.1  christos 			     size_t *msg_len, void **data_pos)
    357  1.1  christos {
    358  1.1  christos 	return wpa_alloc_eapol(wpa_s, type, data, data_len, msg_len, data_pos);
    359  1.1  christos }
    360  1.1  christos 
    361  1.1  christos 
    362  1.1  christos static int _wpa_ether_send(void *wpa_s, const u8 *dest, u16 proto,
    363  1.1  christos 			   const u8 *buf, size_t len)
    364  1.1  christos {
    365  1.1  christos 	return wpa_ether_send(wpa_s, dest, proto, buf, len);
    366  1.1  christos }
    367  1.1  christos 
    368  1.1  christos 
    369  1.1  christos static void _wpa_supplicant_cancel_auth_timeout(void *wpa_s)
    370  1.1  christos {
    371  1.1  christos 	wpa_supplicant_cancel_auth_timeout(wpa_s);
    372  1.1  christos }
    373  1.1  christos 
    374  1.1  christos 
    375  1.1  christos static void _wpa_supplicant_set_state(void *wpa_s, enum wpa_states state)
    376  1.1  christos {
    377  1.1  christos 	wpa_supplicant_set_state(wpa_s, state);
    378  1.1  christos }
    379  1.1  christos 
    380  1.1  christos 
    381  1.1  christos /**
    382  1.1  christos  * wpa_supplicant_get_state - Get the connection state
    383  1.1  christos  * @wpa_s: Pointer to wpa_supplicant data
    384  1.1  christos  * Returns: The current connection state (WPA_*)
    385  1.1  christos  */
    386  1.1  christos static enum wpa_states wpa_supplicant_get_state(struct wpa_supplicant *wpa_s)
    387  1.1  christos {
    388  1.1  christos 	return wpa_s->wpa_state;
    389  1.1  christos }
    390  1.1  christos 
    391  1.1  christos 
    392  1.1  christos static enum wpa_states _wpa_supplicant_get_state(void *wpa_s)
    393  1.1  christos {
    394  1.1  christos 	return wpa_supplicant_get_state(wpa_s);
    395  1.1  christos }
    396  1.1  christos 
    397  1.1  christos 
    398  1.1  christos static void _wpa_supplicant_disassociate(void *wpa_s, int reason_code)
    399  1.1  christos {
    400  1.1  christos 	wpa_supplicant_disassociate(wpa_s, reason_code);
    401  1.1  christos 	/* Schedule a scan to make sure we continue looking for networks */
    402  1.1  christos 	wpa_supplicant_req_scan(wpa_s, 5, 0);
    403  1.1  christos }
    404  1.1  christos 
    405  1.1  christos 
    406  1.1  christos static void _wpa_supplicant_deauthenticate(void *wpa_s, int reason_code)
    407  1.1  christos {
    408  1.1  christos 	wpa_supplicant_deauthenticate(wpa_s, reason_code);
    409  1.1  christos 	/* Schedule a scan to make sure we continue looking for networks */
    410  1.1  christos 	wpa_supplicant_req_scan(wpa_s, 5, 0);
    411  1.1  christos }
    412  1.1  christos 
    413  1.1  christos 
    414  1.1  christos static void * wpa_supplicant_get_network_ctx(void *wpa_s)
    415  1.1  christos {
    416  1.1  christos 	return wpa_supplicant_get_ssid(wpa_s);
    417  1.1  christos }
    418  1.1  christos 
    419  1.1  christos 
    420  1.1  christos static int wpa_supplicant_get_bssid(void *ctx, u8 *bssid)
    421  1.1  christos {
    422  1.1  christos 	struct wpa_supplicant *wpa_s = ctx;
    423  1.1  christos 	if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_USER_SPACE_MLME) {
    424  1.1  christos 		os_memcpy(bssid, wpa_s->bssid, ETH_ALEN);
    425  1.1  christos 		return 0;
    426  1.1  christos 	}
    427  1.1  christos 	return wpa_drv_get_bssid(wpa_s, bssid);
    428  1.1  christos }
    429  1.1  christos 
    430  1.1  christos 
    431  1.1  christos static int wpa_supplicant_set_key(void *_wpa_s, enum wpa_alg alg,
    432  1.1  christos 				  const u8 *addr, int key_idx, int set_tx,
    433  1.1  christos 				  const u8 *seq, size_t seq_len,
    434  1.1  christos 				  const u8 *key, size_t key_len)
    435  1.1  christos {
    436  1.1  christos 	struct wpa_supplicant *wpa_s = _wpa_s;
    437  1.1  christos 	if (alg == WPA_ALG_TKIP && key_idx == 0 && key_len == 32) {
    438  1.1  christos 		/* Clear the MIC error counter when setting a new PTK. */
    439  1.1  christos 		wpa_s->mic_errors_seen = 0;
    440  1.1  christos 	}
    441  1.1  christos 	return wpa_drv_set_key(wpa_s, alg, addr, key_idx, set_tx, seq, seq_len,
    442  1.1  christos 			       key, key_len);
    443  1.1  christos }
    444  1.1  christos 
    445  1.1  christos 
    446  1.1  christos static int wpa_supplicant_mlme_setprotection(void *wpa_s, const u8 *addr,
    447  1.1  christos 					     int protection_type,
    448  1.1  christos 					     int key_type)
    449  1.1  christos {
    450  1.1  christos 	return wpa_drv_mlme_setprotection(wpa_s, addr, protection_type,
    451  1.1  christos 					  key_type);
    452  1.1  christos }
    453  1.1  christos 
    454  1.1  christos 
    455  1.1  christos static int wpa_supplicant_add_pmkid(void *wpa_s,
    456  1.1  christos 				    const u8 *bssid, const u8 *pmkid)
    457  1.1  christos {
    458  1.1  christos 	return wpa_drv_add_pmkid(wpa_s, bssid, pmkid);
    459  1.1  christos }
    460  1.1  christos 
    461  1.1  christos 
    462  1.1  christos static int wpa_supplicant_remove_pmkid(void *wpa_s,
    463  1.1  christos 				       const u8 *bssid, const u8 *pmkid)
    464  1.1  christos {
    465  1.1  christos 	return wpa_drv_remove_pmkid(wpa_s, bssid, pmkid);
    466  1.1  christos }
    467  1.1  christos 
    468  1.1  christos 
    469  1.1  christos #ifdef CONFIG_IEEE80211R
    470  1.1  christos static int wpa_supplicant_update_ft_ies(void *ctx, const u8 *md,
    471  1.1  christos 					const u8 *ies, size_t ies_len)
    472  1.1  christos {
    473  1.1  christos 	struct wpa_supplicant *wpa_s = ctx;
    474  1.1  christos 	if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_USER_SPACE_MLME)
    475  1.1  christos 		return ieee80211_sta_update_ft_ies(wpa_s, md, ies, ies_len);
    476  1.1  christos 	if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_SME)
    477  1.1  christos 		return sme_update_ft_ies(wpa_s, md, ies, ies_len);
    478  1.1  christos 	return wpa_drv_update_ft_ies(wpa_s, md, ies, ies_len);
    479  1.1  christos }
    480  1.1  christos 
    481  1.1  christos 
    482  1.1  christos static int wpa_supplicant_send_ft_action(void *ctx, u8 action,
    483  1.1  christos 					 const u8 *target_ap,
    484  1.1  christos 					 const u8 *ies, size_t ies_len)
    485  1.1  christos {
    486  1.1  christos 	struct wpa_supplicant *wpa_s = ctx;
    487  1.1  christos 	if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_USER_SPACE_MLME)
    488  1.1  christos 		return ieee80211_sta_send_ft_action(wpa_s, action, target_ap,
    489  1.1  christos 						    ies, ies_len);
    490  1.1  christos 	return wpa_drv_send_ft_action(wpa_s, action, target_ap, ies, ies_len);
    491  1.1  christos }
    492  1.1  christos 
    493  1.1  christos 
    494  1.1  christos static int wpa_supplicant_mark_authenticated(void *ctx, const u8 *target_ap)
    495  1.1  christos {
    496  1.1  christos 	struct wpa_supplicant *wpa_s = ctx;
    497  1.1  christos 	struct wpa_driver_auth_params params;
    498  1.1  christos 	struct wpa_bss *bss;
    499  1.1  christos 
    500  1.1  christos 	if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_USER_SPACE_MLME)
    501  1.1  christos 		return -1;
    502  1.1  christos 
    503  1.1  christos 	bss = wpa_bss_get_bssid(wpa_s, target_ap);
    504  1.1  christos 	if (bss == NULL)
    505  1.1  christos 		return -1;
    506  1.1  christos 
    507  1.1  christos 	os_memset(&params, 0, sizeof(params));
    508  1.1  christos 	params.bssid = target_ap;
    509  1.1  christos 	params.freq = bss->freq;
    510  1.1  christos 	params.ssid = bss->ssid;
    511  1.1  christos 	params.ssid_len = bss->ssid_len;
    512  1.1  christos 	params.auth_alg = WPA_AUTH_ALG_FT;
    513  1.1  christos 	params.local_state_change = 1;
    514  1.1  christos 	return wpa_drv_authenticate(wpa_s, &params);
    515  1.1  christos }
    516  1.1  christos #endif /* CONFIG_IEEE80211R */
    517  1.1  christos 
    518  1.1  christos #endif /* CONFIG_NO_WPA */
    519  1.1  christos 
    520  1.1  christos 
    521  1.1  christos #ifdef IEEE8021X_EAPOL
    522  1.1  christos #if defined(CONFIG_CTRL_IFACE) || !defined(CONFIG_NO_STDOUT_DEBUG)
    523  1.1  christos static void wpa_supplicant_eap_param_needed(void *ctx, const char *field,
    524  1.1  christos 					    const char *txt)
    525  1.1  christos {
    526  1.1  christos 	struct wpa_supplicant *wpa_s = ctx;
    527  1.1  christos 	struct wpa_ssid *ssid = wpa_s->current_ssid;
    528  1.1  christos 	char *buf;
    529  1.1  christos 	size_t buflen;
    530  1.1  christos 	int len;
    531  1.1  christos 
    532  1.1  christos 	if (ssid == NULL)
    533  1.1  christos 		return;
    534  1.1  christos 
    535  1.1  christos 	buflen = 100 + os_strlen(txt) + ssid->ssid_len;
    536  1.1  christos 	buf = os_malloc(buflen);
    537  1.1  christos 	if (buf == NULL)
    538  1.1  christos 		return;
    539  1.1  christos 	len = os_snprintf(buf, buflen,
    540  1.1  christos 			  WPA_CTRL_REQ "%s-%d:%s needed for SSID ",
    541  1.1  christos 			  field, ssid->id, txt);
    542  1.1  christos 	if (len < 0 || (size_t) len >= buflen) {
    543  1.1  christos 		os_free(buf);
    544  1.1  christos 		return;
    545  1.1  christos 	}
    546  1.1  christos 	if (ssid->ssid && buflen > len + ssid->ssid_len) {
    547  1.1  christos 		os_memcpy(buf + len, ssid->ssid, ssid->ssid_len);
    548  1.1  christos 		len += ssid->ssid_len;
    549  1.1  christos 		buf[len] = '\0';
    550  1.1  christos 	}
    551  1.1  christos 	buf[buflen - 1] = '\0';
    552  1.1  christos 	wpa_msg(wpa_s, MSG_INFO, "%s", buf);
    553  1.1  christos 	os_free(buf);
    554  1.1  christos }
    555  1.1  christos #else /* CONFIG_CTRL_IFACE || !CONFIG_NO_STDOUT_DEBUG */
    556  1.1  christos #define wpa_supplicant_eap_param_needed NULL
    557  1.1  christos #endif /* CONFIG_CTRL_IFACE || !CONFIG_NO_STDOUT_DEBUG */
    558  1.1  christos 
    559  1.1  christos 
    560  1.1  christos static void wpa_supplicant_port_cb(void *ctx, int authorized)
    561  1.1  christos {
    562  1.1  christos 	struct wpa_supplicant *wpa_s = ctx;
    563  1.1  christos 	wpa_printf(MSG_DEBUG, "EAPOL: Supplicant port status: %s",
    564  1.1  christos 		   authorized ? "Authorized" : "Unauthorized");
    565  1.1  christos 	wpa_drv_set_supp_port(wpa_s, authorized);
    566  1.1  christos }
    567  1.1  christos #endif /* IEEE8021X_EAPOL */
    568  1.1  christos 
    569  1.1  christos 
    570  1.1  christos int wpa_supplicant_init_eapol(struct wpa_supplicant *wpa_s)
    571  1.1  christos {
    572  1.1  christos #ifdef IEEE8021X_EAPOL
    573  1.1  christos 	struct eapol_ctx *ctx;
    574  1.1  christos 	ctx = os_zalloc(sizeof(*ctx));
    575  1.1  christos 	if (ctx == NULL) {
    576  1.1  christos 		wpa_printf(MSG_ERROR, "Failed to allocate EAPOL context.");
    577  1.1  christos 		return -1;
    578  1.1  christos 	}
    579  1.1  christos 
    580  1.1  christos 	ctx->ctx = wpa_s;
    581  1.1  christos 	ctx->msg_ctx = wpa_s;
    582  1.1  christos 	ctx->eapol_send_ctx = wpa_s;
    583  1.1  christos 	ctx->preauth = 0;
    584  1.1  christos 	ctx->eapol_done_cb = wpa_supplicant_notify_eapol_done;
    585  1.1  christos 	ctx->eapol_send = wpa_supplicant_eapol_send;
    586  1.1  christos 	ctx->set_wep_key = wpa_eapol_set_wep_key;
    587  1.1  christos 	ctx->set_config_blob = wpa_supplicant_set_config_blob;
    588  1.1  christos 	ctx->get_config_blob = wpa_supplicant_get_config_blob;
    589  1.1  christos 	ctx->aborted_cached = wpa_supplicant_aborted_cached;
    590  1.1  christos 	ctx->opensc_engine_path = wpa_s->conf->opensc_engine_path;
    591  1.1  christos 	ctx->pkcs11_engine_path = wpa_s->conf->pkcs11_engine_path;
    592  1.1  christos 	ctx->pkcs11_module_path = wpa_s->conf->pkcs11_module_path;
    593  1.1  christos 	ctx->wps = wpa_s->wps;
    594  1.1  christos 	ctx->eap_param_needed = wpa_supplicant_eap_param_needed;
    595  1.1  christos 	ctx->port_cb = wpa_supplicant_port_cb;
    596  1.1  christos 	ctx->cb = wpa_supplicant_eapol_cb;
    597  1.1  christos 	ctx->cb_ctx = wpa_s;
    598  1.1  christos 	wpa_s->eapol = eapol_sm_init(ctx);
    599  1.1  christos 	if (wpa_s->eapol == NULL) {
    600  1.1  christos 		os_free(ctx);
    601  1.1  christos 		wpa_printf(MSG_ERROR, "Failed to initialize EAPOL state "
    602  1.1  christos 			   "machines.");
    603  1.1  christos 		return -1;
    604  1.1  christos 	}
    605  1.1  christos #endif /* IEEE8021X_EAPOL */
    606  1.1  christos 
    607  1.1  christos 	return 0;
    608  1.1  christos }
    609  1.1  christos 
    610  1.1  christos 
    611  1.1  christos int wpa_supplicant_init_wpa(struct wpa_supplicant *wpa_s)
    612  1.1  christos {
    613  1.1  christos #ifndef CONFIG_NO_WPA
    614  1.1  christos 	struct wpa_sm_ctx *ctx;
    615  1.1  christos 	ctx = os_zalloc(sizeof(*ctx));
    616  1.1  christos 	if (ctx == NULL) {
    617  1.1  christos 		wpa_printf(MSG_ERROR, "Failed to allocate WPA context.");
    618  1.1  christos 		return -1;
    619  1.1  christos 	}
    620  1.1  christos 
    621  1.1  christos 	ctx->ctx = wpa_s;
    622  1.1  christos 	ctx->msg_ctx = wpa_s;
    623  1.1  christos 	ctx->set_state = _wpa_supplicant_set_state;
    624  1.1  christos 	ctx->get_state = _wpa_supplicant_get_state;
    625  1.1  christos 	ctx->deauthenticate = _wpa_supplicant_deauthenticate;
    626  1.1  christos 	ctx->disassociate = _wpa_supplicant_disassociate;
    627  1.1  christos 	ctx->set_key = wpa_supplicant_set_key;
    628  1.1  christos 	ctx->get_network_ctx = wpa_supplicant_get_network_ctx;
    629  1.1  christos 	ctx->get_bssid = wpa_supplicant_get_bssid;
    630  1.1  christos 	ctx->ether_send = _wpa_ether_send;
    631  1.1  christos 	ctx->get_beacon_ie = wpa_supplicant_get_beacon_ie;
    632  1.1  christos 	ctx->alloc_eapol = _wpa_alloc_eapol;
    633  1.1  christos 	ctx->cancel_auth_timeout = _wpa_supplicant_cancel_auth_timeout;
    634  1.1  christos 	ctx->add_pmkid = wpa_supplicant_add_pmkid;
    635  1.1  christos 	ctx->remove_pmkid = wpa_supplicant_remove_pmkid;
    636  1.1  christos #ifndef CONFIG_NO_CONFIG_BLOBS
    637  1.1  christos 	ctx->set_config_blob = wpa_supplicant_set_config_blob;
    638  1.1  christos 	ctx->get_config_blob = wpa_supplicant_get_config_blob;
    639  1.1  christos #endif /* CONFIG_NO_CONFIG_BLOBS */
    640  1.1  christos 	ctx->mlme_setprotection = wpa_supplicant_mlme_setprotection;
    641  1.1  christos #ifdef CONFIG_IEEE80211R
    642  1.1  christos 	ctx->update_ft_ies = wpa_supplicant_update_ft_ies;
    643  1.1  christos 	ctx->send_ft_action = wpa_supplicant_send_ft_action;
    644  1.1  christos 	ctx->mark_authenticated = wpa_supplicant_mark_authenticated;
    645  1.1  christos #endif /* CONFIG_IEEE80211R */
    646  1.1  christos 
    647  1.1  christos 	wpa_s->wpa = wpa_sm_init(ctx);
    648  1.1  christos 	if (wpa_s->wpa == NULL) {
    649  1.1  christos 		wpa_printf(MSG_ERROR, "Failed to initialize WPA state "
    650  1.1  christos 			   "machine");
    651  1.1  christos 		return -1;
    652  1.1  christos 	}
    653  1.1  christos #endif /* CONFIG_NO_WPA */
    654  1.1  christos 
    655  1.1  christos 	return 0;
    656  1.1  christos }
    657  1.1  christos 
    658  1.1  christos 
    659  1.1  christos void wpa_supplicant_rsn_supp_set_config(struct wpa_supplicant *wpa_s,
    660  1.1  christos 					struct wpa_ssid *ssid)
    661  1.1  christos {
    662  1.1  christos 	struct rsn_supp_config conf;
    663  1.1  christos 	if (ssid) {
    664  1.1  christos 		os_memset(&conf, 0, sizeof(conf));
    665  1.1  christos 		conf.network_ctx = ssid;
    666  1.1  christos 		conf.peerkey_enabled = ssid->peerkey;
    667  1.1  christos 		conf.allowed_pairwise_cipher = ssid->pairwise_cipher;
    668  1.1  christos #ifdef IEEE8021X_EAPOL
    669  1.1  christos 		conf.eap_workaround = ssid->eap_workaround;
    670  1.1  christos 		conf.eap_conf_ctx = &ssid->eap;
    671  1.1  christos #endif /* IEEE8021X_EAPOL */
    672  1.1  christos 		conf.ssid = ssid->ssid;
    673  1.1  christos 		conf.ssid_len = ssid->ssid_len;
    674  1.1  christos 		conf.wpa_ptk_rekey = ssid->wpa_ptk_rekey;
    675  1.1  christos 	}
    676  1.1  christos 	wpa_sm_set_config(wpa_s->wpa, ssid ? &conf : NULL);
    677  1.1  christos }
    678