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P2P NFC: Static handover with NFC Tag on client

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This adds a new P2P Invitation mechanism to invite a P2P Device with an
NFC Tag to an already operating group when the GO with NFC Device reads
the NFC Tag. The P2P Device with the NFC Tag will then accept invitation
and connect to the group automatically using its OOB Device Password.

Signed-hostap: Jouni Malinen <jouni@qca.qualcomm.com>
This commit is contained in:
Jouni Malinen 2013-09-08 09:45:04 -07:00 • committed by Jouni Malinen
parent dd87677115
commit 8e9f53c367
6 changed files with 91 additions and 21 deletions
Download patch file Download diff file Expand all files Collapse all files

64
wpa_supplicant/p2p_supplicant.c
View file

@ -1109,9 +1109,9 @@ static void wpas_start_wps_enrollee(struct wpa_supplicant *wpa_s,
struct p2p_go_neg_results *res)
{
wpa_printf(MSG_DEBUG, "P2P: Start WPS Enrollee for peer " MACSTR
" dev_addr " MACSTR,
" dev_addr " MACSTR " wps_method %d",
MAC2STR(res->peer_interface_addr),
MAC2STR(res->peer_device_addr));
MAC2STR(res->peer_device_addr), res->wps_method);
wpa_hexdump_ascii(MSG_DEBUG, "P2P: Start WPS Enrollee for SSID",
res->ssid, res->ssid_len);
wpa_supplicant_ap_deinit(wpa_s);
@ -2901,7 +2901,8 @@ static u8 wpas_invitation_process(void *ctx, const u8 *sa, const u8 *bssid,
const u8 *go_dev_addr, const u8 *ssid,
size_t ssid_len, int *go, u8 *group_bssid,
int *force_freq, int persistent_group,
const struct p2p_channels *channels)
const struct p2p_channels *channels,
int dev_pw_id)
{
struct wpa_supplicant *wpa_s = ctx;
struct wpa_ssid *s;
@ -2920,6 +2921,21 @@ static u8 wpas_invitation_process(void *ctx, const u8 *sa, const u8 *bssid,
"authorized invitation");
goto accept_inv;
}
#ifdef CONFIG_WPS_NFC
if (dev_pw_id >= 0 && wpa_s->parent->p2p_nfc_tag_enabled &&
dev_pw_id == wpa_s->parent->p2p_oob_dev_pw_id) {
wpa_printf(MSG_DEBUG, "P2P: Accept invitation based on local enabled NFC Tag");
wpa_s->parent->p2p_wps_method = WPS_NFC;
wpa_s->parent->pending_join_wps_method = WPS_NFC;
os_memcpy(wpa_s->parent->pending_join_dev_addr,
go_dev_addr, ETH_ALEN);
os_memcpy(wpa_s->parent->pending_join_iface_addr,
bssid, ETH_ALEN);
goto accept_inv;
}
#endif /* CONFIG_WPS_NFC */
/*
* Do not accept the invitation automatically; notify user and
* request approval.
@ -5722,7 +5738,7 @@ int wpas_p2p_invite(struct wpa_supplicant *wpa_s, const u8 *peer_addr,
return p2p_invite(wpa_s->global->p2p, peer_addr, role, bssid,
ssid->ssid, ssid->ssid_len, force_freq, go_dev_addr,
1, pref_freq);
1, pref_freq, -1);
}
@ -5796,7 +5812,7 @@ int wpas_p2p_invite_group(struct wpa_supplicant *wpa_s, const char *ifname,
return p2p_invite(wpa_s->global->p2p, peer_addr, role, bssid,
ssid->ssid, ssid->ssid_len, force_freq,
go_dev_addr, persistent, pref_freq);
go_dev_addr, persistent, pref_freq, -1);
}
@ -7158,12 +7174,15 @@ static int wpas_p2p_nfc_join_group(struct wpa_supplicant *wpa_s,
static int wpas_p2p_nfc_auth_join(struct wpa_supplicant *wpa_s,
struct p2p_nfc_params *params)
struct p2p_nfc_params *params, int tag)
{
int res, persistent;
struct wpa_ssid *ssid;
wpa_printf(MSG_DEBUG, "P2P: Authorize join-group based on NFC "
"connection handover");
for (wpa_s = wpa_s->global->ifaces; wpa_s; wpa_s = wpa_s->next) {
struct wpa_ssid *ssid = wpa_s->current_ssid;
ssid = wpa_s->current_ssid;
if (ssid == NULL)
continue;
if (ssid->mode != WPAS_MODE_P2P_GO)
@ -7183,11 +7202,38 @@ static int wpas_p2p_nfc_auth_join(struct wpa_supplicant *wpa_s,
wpa_printf(MSG_DEBUG, "P2P: No NFC Dev Pw known");
return -1;
}
return wpas_ap_wps_add_nfc_pw(
res = wpas_ap_wps_add_nfc_pw(
wpa_s, wpa_s->parent->p2p_oob_dev_pw_id,
wpa_s->parent->p2p_oob_dev_pw,
wpa_s->parent->p2p_peer_oob_pk_hash_known ?
wpa_s->parent->p2p_peer_oob_pubkey_hash : NULL);
if (res)
return res;
if (!tag) {
wpa_printf(MSG_DEBUG, "P2P: Negotiated handover - wait for peer to join without invitation");
return 0;
}
if (!params->peer ||
!(params->peer->dev_capab & P2P_DEV_CAPAB_INVITATION_PROCEDURE))
return 0;
wpa_printf(MSG_DEBUG, "P2P: Static handover - invite peer " MACSTR
" to join", MAC2STR(params->peer->p2p_device_addr));
wpa_s->global->p2p_invite_group = wpa_s;
persistent = ssid->p2p_persistent_group &&
wpas_p2p_get_persistent(wpa_s->parent,
params->peer->p2p_device_addr,
ssid->ssid, ssid->ssid_len);
wpa_s->parent->pending_invite_ssid_id = -1;
return p2p_invite(wpa_s->global->p2p, params->peer->p2p_device_addr,
P2P_INVITE_ROLE_ACTIVE_GO, wpa_s->own_addr,
ssid->ssid, ssid->ssid_len, ssid->frequency,
wpa_s->global->p2p_dev_addr, persistent, 0,
wpa_s->parent->p2p_oob_dev_pw_id);
}
@ -7378,7 +7424,7 @@ static int wpas_p2p_nfc_connection_handover(struct wpa_supplicant *wpa_s,
case JOIN_GROUP:
return wpas_p2p_nfc_join_group(wpa_s, &params);
case AUTH_JOIN:
return wpas_p2p_nfc_auth_join(wpa_s, &params);
return wpas_p2p_nfc_auth_join(wpa_s, &params, tag);
case INIT_GO_NEG:
return wpas_p2p_nfc_init_go_neg(wpa_s, &params);
case RESP_GO_NEG: