DGNum/hostapd
6
0
Fork 0
Code Issues Pull requests 1 Projects Releases Packages Wiki Activity Actions
hostapd/wpa_supplicant/p2p_supplicant.c
Jouni Malinen 303f60d39b P2P: Do not request station mode scans during P2P operations 
The P2P search mechanism depends on the same scan functionality that
is used for station mode scans. If these operations are being used
at the same time, scan result processing is not handled properly.
Avoid unexpected behavior by delaying station mode scan requests
if a P2P operation is in progress.

Among other things, this allows the station mode connection attempt
to be continued after a P2P find or group formation has been completed
if the interface is available (i.e., when the P2P group uses a
separate virtual interface).
2011-09-29 16:53:55 +03:00

4376 lines
120 KiB
C
Raw Blame History

/*
* wpa_supplicant - P2P
* Copyright (c) 2009-2010, Atheros Communications
*
* 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 "eloop.h"
#include "common/ieee802_11_common.h"
#include "common/ieee802_11_defs.h"
#include "common/wpa_ctrl.h"
#include "wps/wps_i.h"
#include "p2p/p2p.h"
#include "ap/hostapd.h"
#include "ap/p2p_hostapd.h"
#include "eapol_supp/eapol_supp_sm.h"
#include "rsn_supp/wpa.h"
#include "wpa_supplicant_i.h"
#include "driver_i.h"
#include "ap.h"
#include "config_ssid.h"
#include "config.h"
#include "mlme.h"
#include "notify.h"
#include "scan.h"
#include "bss.h"
#include "wps_supplicant.h"
#include "p2p_supplicant.h"
/*
* How many times to try to scan to find the GO before giving up on join
* request.
*/
#define P2P_MAX_JOIN_SCAN_ATTEMPTS 10
static void wpas_p2p_long_listen_timeout(void *eloop_ctx, void *timeout_ctx);
static struct wpa_supplicant *
wpas_p2p_get_group_iface(struct wpa_supplicant *wpa_s, int addr_allocated,
int go);
static int wpas_p2p_join_start(struct wpa_supplicant *wpa_s);
static void wpas_p2p_join_scan(void *eloop_ctx, void *timeout_ctx);
static int wpas_p2p_join(struct wpa_supplicant *wpa_s, const u8 *iface_addr,
const u8 *dev_addr, enum p2p_wps_method wps_method);
static int wpas_p2p_create_iface(struct wpa_supplicant *wpa_s);
static void wpas_p2p_cross_connect_setup(struct wpa_supplicant *wpa_s);
static void wpas_p2p_group_idle_timeout(void *eloop_ctx, void *timeout_ctx);
static void wpas_p2p_set_group_idle_timeout(struct wpa_supplicant *wpa_s);
static void wpas_p2p_scan_res_handler(struct wpa_supplicant *wpa_s,
struct wpa_scan_results *scan_res)
{
size_t i;
if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
return;
wpa_printf(MSG_DEBUG, "P2P: Scan results received (%d BSS)",
(int) scan_res->num);
for (i = 0; i < scan_res->num; i++) {
struct wpa_scan_res *bss = scan_res->res[i];
if (p2p_scan_res_handler(wpa_s->global->p2p, bss->bssid,
bss->freq, bss->level,
(const u8 *) (bss + 1),
bss->ie_len) > 0)
break;
}
p2p_scan_res_handled(wpa_s->global->p2p);
}
static int wpas_p2p_scan(void *ctx, enum p2p_scan_type type, int freq,
unsigned int num_req_dev_types,
const u8 *req_dev_types)
{
struct wpa_supplicant *wpa_s = ctx;
struct wpa_driver_scan_params params;
int ret;
struct wpabuf *wps_ie, *ies;
int social_channels[] = { 2412, 2437, 2462, 0, 0 };
if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
return -1;
os_memset(&params, 0, sizeof(params));
/* P2P Wildcard SSID */
params.num_ssids = 1;
params.ssids[0].ssid = (u8 *) P2P_WILDCARD_SSID;
params.ssids[0].ssid_len = P2P_WILDCARD_SSID_LEN;
wpa_s->wps->dev.p2p = 1;
wps_ie = wps_build_probe_req_ie(0, &wpa_s->wps->dev, wpa_s->wps->uuid,
WPS_REQ_ENROLLEE,
num_req_dev_types, req_dev_types);
if (wps_ie == NULL)
return -1;
ies = wpabuf_alloc(wpabuf_len(wps_ie) + 100);
if (ies == NULL) {
wpabuf_free(wps_ie);
return -1;
}
wpabuf_put_buf(ies, wps_ie);
wpabuf_free(wps_ie);
p2p_scan_ie(wpa_s->global->p2p, ies);
params.p2p_probe = 1;
params.extra_ies = wpabuf_head(ies);
params.extra_ies_len = wpabuf_len(ies);
switch (type) {
case P2P_SCAN_SOCIAL:
params.freqs = social_channels;
break;
case P2P_SCAN_FULL:
break;
case P2P_SCAN_SPECIFIC:
social_channels[0] = freq;
social_channels[1] = 0;
params.freqs = social_channels;
break;
case P2P_SCAN_SOCIAL_PLUS_ONE:
social_channels[3] = freq;
params.freqs = social_channels;
break;
}
wpa_s->scan_res_handler = wpas_p2p_scan_res_handler;
if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_USER_SPACE_MLME)
ret = ieee80211_sta_req_scan(wpa_s, &params);
else
ret = wpa_drv_scan(wpa_s, &params);
wpabuf_free(ies);
if (ret < 0)
wpa_s->scan_res_handler = NULL;
return ret;
}
#ifdef CONFIG_CLIENT_MLME
static void p2p_rx_action_mlme(void *ctx, const u8 *buf, size_t len, int freq)
{
struct wpa_supplicant *wpa_s = ctx;
const struct ieee80211_mgmt *mgmt;
size_t hdr_len;
if (wpa_s->global->p2p == NULL || wpa_s->global->p2p_disabled)
return;
mgmt = (const struct ieee80211_mgmt *) buf;
hdr_len = (const u8 *) &mgmt->u.action.u.vs_public_action.action - buf;
if (hdr_len > len)
return;
p2p_rx_action(wpa_s->global->p2p, mgmt->da, mgmt->sa, mgmt->bssid,
mgmt->u.action.category,
&mgmt->u.action.u.vs_public_action.action,
len - hdr_len, freq);
}
#endif /* CONFIG_CLIENT_MLME */
static enum wpa_driver_if_type wpas_p2p_if_type(int p2p_group_interface)
{
switch (p2p_group_interface) {
case P2P_GROUP_INTERFACE_PENDING:
return WPA_IF_P2P_GROUP;
case P2P_GROUP_INTERFACE_GO:
return WPA_IF_P2P_GO;
case P2P_GROUP_INTERFACE_CLIENT:
return WPA_IF_P2P_CLIENT;
}
return WPA_IF_P2P_GROUP;
}
static struct wpa_supplicant * wpas_get_p2p_group(struct wpa_supplicant *wpa_s,
const u8 *ssid,
size_t ssid_len, int *go)
{
struct wpa_ssid *s;
for (wpa_s = wpa_s->global->ifaces; wpa_s; wpa_s = wpa_s->next) {
for (s = wpa_s->conf->ssid; s; s = s->next) {
if (s->disabled != 0 || !s->p2p_group ||
s->ssid_len != ssid_len ||
os_memcmp(ssid, s->ssid, ssid_len) != 0)
continue;
if (s->mode == WPAS_MODE_P2P_GO &&
s != wpa_s->current_ssid)
continue;
if (go)
*go = s->mode == WPAS_MODE_P2P_GO;
return wpa_s;
}
}
return NULL;
}
static void wpas_p2p_group_delete(struct wpa_supplicant *wpa_s)
{
struct wpa_ssid *ssid;
char *gtype;
const char *reason;
eloop_cancel_timeout(wpas_p2p_group_idle_timeout, wpa_s, NULL);
ssid = wpa_s->current_ssid;
if (ssid == NULL) {
/*
* The current SSID was not known, but there may still be a
* pending P2P group interface waiting for provisioning.
*/
ssid = wpa_s->conf->ssid;
while (ssid) {
if (ssid->p2p_group &&
(ssid->mode == WPAS_MODE_P2P_GROUP_FORMATION ||
(ssid->key_mgmt & WPA_KEY_MGMT_WPS)))
break;
ssid = ssid->next;
}
}
if (wpa_s->p2p_group_interface == P2P_GROUP_INTERFACE_GO)
gtype = "GO";
else if (wpa_s->p2p_group_interface == P2P_GROUP_INTERFACE_CLIENT ||
(ssid && ssid->mode == WPAS_MODE_INFRA)) {
wpa_s->reassociate = 0;
wpa_s->disconnected = 1;
wpa_supplicant_deauthenticate(wpa_s,
WLAN_REASON_DEAUTH_LEAVING);
gtype = "client";
} else
gtype = "GO";
if (wpa_s->cross_connect_in_use) {
wpa_s->cross_connect_in_use = 0;
wpa_msg(wpa_s->parent, MSG_INFO,
P2P_EVENT_CROSS_CONNECT_DISABLE "%s %s",
wpa_s->ifname, wpa_s->cross_connect_uplink);
}
switch (wpa_s->removal_reason) {
case P2P_GROUP_REMOVAL_REQUESTED:
reason = " reason=REQUESTED";
break;
case P2P_GROUP_REMOVAL_IDLE_TIMEOUT:
reason = " reason=IDLE";
break;
case P2P_GROUP_REMOVAL_UNAVAILABLE:
reason = " reason=UNAVAILABLE";
break;
default:
reason = "";
break;
}
wpa_msg(wpa_s->parent, MSG_INFO, P2P_EVENT_GROUP_REMOVED "%s %s%s",
wpa_s->ifname, gtype, reason);
if (ssid)
wpas_notify_p2p_group_removed(wpa_s, ssid, gtype);
if (wpa_s->p2p_group_interface != NOT_P2P_GROUP_INTERFACE) {
struct wpa_global *global;
char *ifname;
enum wpa_driver_if_type type;
wpa_printf(MSG_DEBUG, "P2P: Remove group interface %s",
wpa_s->ifname);
global = wpa_s->global;
ifname = os_strdup(wpa_s->ifname);
type = wpas_p2p_if_type(wpa_s->p2p_group_interface);
wpa_supplicant_remove_iface(wpa_s->global, wpa_s);
wpa_s = global->ifaces;
if (wpa_s && ifname)
wpa_drv_if_remove(wpa_s, type, ifname);
os_free(ifname);
return;
}
wpa_printf(MSG_DEBUG, "P2P: Remove temporary group network");
if (ssid && (ssid->p2p_group ||
ssid->mode == WPAS_MODE_P2P_GROUP_FORMATION ||
(ssid->key_mgmt & WPA_KEY_MGMT_WPS))) {
int id = ssid->id;
if (ssid == wpa_s->current_ssid) {
wpa_sm_set_config(wpa_s->wpa, NULL);
eapol_sm_notify_config(wpa_s->eapol, NULL, NULL);
wpa_s->current_ssid = NULL;
}
/*
* Networks objects created during any P2P activities are not
* exposed out as they might/will confuse certain non-P2P aware
* applications since these network objects won't behave like
* regular ones.
*
* Likewise, we don't send out network removed signals for such
* network objects.
*/
wpa_config_remove_network(wpa_s->conf, id);
wpa_supplicant_clear_status(wpa_s);
} else {
wpa_printf(MSG_DEBUG, "P2P: Temporary group network not "
"found");
}
wpa_supplicant_ap_deinit(wpa_s);
}
static int wpas_p2p_persistent_group(struct wpa_supplicant *wpa_s,
u8 *go_dev_addr,
const u8 *ssid, size_t ssid_len)
{
struct wpa_bss *bss;
const u8 *bssid;
struct wpabuf *p2p;
u8 group_capab;
const u8 *addr;
if (wpa_s->go_params)
bssid = wpa_s->go_params->peer_interface_addr;
else
bssid = wpa_s->bssid;
bss = wpa_bss_get(wpa_s, bssid, ssid, ssid_len);
if (bss == NULL) {
u8 iface_addr[ETH_ALEN];
if (p2p_get_interface_addr(wpa_s->global->p2p, bssid,
iface_addr) == 0)
bss = wpa_bss_get(wpa_s, iface_addr, ssid, ssid_len);
}
if (bss == NULL) {
wpa_printf(MSG_DEBUG, "P2P: Could not figure out whether "
"group is persistent - BSS " MACSTR " not found",
MAC2STR(bssid));
return 0;
}
p2p = wpa_bss_get_vendor_ie_multi(bss, P2P_IE_VENDOR_TYPE);
if (p2p == NULL) {
wpa_printf(MSG_DEBUG, "P2P: Could not figure out whether "
"group is persistent - BSS " MACSTR
" did not include P2P IE", MAC2STR(bssid));
wpa_hexdump(MSG_DEBUG, "P2P: Probe Response IEs",
(u8 *) (bss + 1), bss->ie_len);
wpa_hexdump(MSG_DEBUG, "P2P: Beacon IEs",
((u8 *) bss + 1) + bss->ie_len,
bss->beacon_ie_len);
return 0;
}
group_capab = p2p_get_group_capab(p2p);
addr = p2p_get_go_dev_addr(p2p);
wpa_printf(MSG_DEBUG, "P2P: Checking whether group is persistent: "
"group_capab=0x%x", group_capab);
if (addr) {
os_memcpy(go_dev_addr, addr, ETH_ALEN);
wpa_printf(MSG_DEBUG, "P2P: GO Device Address " MACSTR,
MAC2STR(addr));
} else
os_memset(go_dev_addr, 0, ETH_ALEN);
wpabuf_free(p2p);
wpa_printf(MSG_DEBUG, "P2P: BSS " MACSTR " group_capab=0x%x "
"go_dev_addr=" MACSTR,
MAC2STR(bssid), group_capab, MAC2STR(go_dev_addr));
return group_capab & P2P_GROUP_CAPAB_PERSISTENT_GROUP;
}
static int wpas_p2p_store_persistent_group(struct wpa_supplicant *wpa_s,
struct wpa_ssid *ssid,
const u8 *go_dev_addr)
{
struct wpa_ssid *s;
int changed = 0;
wpa_printf(MSG_DEBUG, "P2P: Storing credentials for a persistent "
"group (GO Dev Addr " MACSTR ")", MAC2STR(go_dev_addr));
for (s = wpa_s->conf->ssid; s; s = s->next) {
if (s->disabled == 2 &&
os_memcmp(go_dev_addr, s->bssid, ETH_ALEN) == 0 &&
s->ssid_len == ssid->ssid_len &&
os_memcmp(ssid->ssid, s->ssid, ssid->ssid_len) == 0)
break;
}
if (s) {
wpa_printf(MSG_DEBUG, "P2P: Update existing persistent group "
"entry");
if (ssid->passphrase && !s->passphrase)
changed = 1;
else if (ssid->passphrase && s->passphrase &&
os_strcmp(ssid->passphrase, s->passphrase) != 0)
changed = 1;
} else {
wpa_printf(MSG_DEBUG, "P2P: Create a new persistent group "
"entry");
changed = 1;
s = wpa_config_add_network(wpa_s->conf);
if (s == NULL)
return -1;
/*
* Instead of network_added we emit persistent_group_added
* notification. Also to keep the defense checks in
* persistent_group obj registration method, we set the
* relevant flags in s to designate it as a persistent group.
*/
s->p2p_group = 1;
s->p2p_persistent_group = 1;
wpas_notify_persistent_group_added(wpa_s, s);
wpa_config_set_network_defaults(s);
}
s->p2p_group = 1;
s->p2p_persistent_group = 1;
s->disabled = 2;
s->bssid_set = 1;
os_memcpy(s->bssid, go_dev_addr, ETH_ALEN);
s->mode = ssid->mode;
s->auth_alg = WPA_AUTH_ALG_OPEN;
s->key_mgmt = WPA_KEY_MGMT_PSK;
s->proto = WPA_PROTO_RSN;
s->pairwise_cipher = WPA_CIPHER_CCMP;
s->export_keys = 1;
if (ssid->passphrase) {
os_free(s->passphrase);
s->passphrase = os_strdup(ssid->passphrase);
}
if (ssid->psk_set) {
s->psk_set = 1;
os_memcpy(s->psk, ssid->psk, 32);
}
if (s->passphrase && !s->psk_set)
wpa_config_update_psk(s);
if (s->ssid == NULL || s->ssid_len < ssid->ssid_len) {
os_free(s->ssid);
s->ssid = os_malloc(ssid->ssid_len);
}
if (s->ssid) {
s->ssid_len = ssid->ssid_len;
os_memcpy(s->ssid, ssid->ssid, s->ssid_len);
}
#ifndef CONFIG_NO_CONFIG_WRITE
if (changed && wpa_s->conf->update_config &&
wpa_config_write(wpa_s->confname, wpa_s->conf)) {
wpa_printf(MSG_DEBUG, "P2P: Failed to update configuration");
}
#endif /* CONFIG_NO_CONFIG_WRITE */
return s->id;
}
static void wpas_group_formation_completed(struct wpa_supplicant *wpa_s,
int success)
{
struct wpa_ssid *ssid;
const char *ssid_txt;
int client;
int persistent;
u8 go_dev_addr[ETH_ALEN];
int network_id = -1;
/*
* This callback is likely called for the main interface. Update wpa_s
* to use the group interface if a new interface was created for the
* group.
*/
if (wpa_s->global->p2p_group_formation)
wpa_s = wpa_s->global->p2p_group_formation;
wpa_s->global->p2p_group_formation = NULL;
wpa_s->p2p_in_provisioning = 0;
if (!success) {
wpa_msg(wpa_s->parent, MSG_INFO,
P2P_EVENT_GROUP_FORMATION_FAILURE);
wpas_p2p_group_delete(wpa_s);
return;
}
wpa_msg(wpa_s->parent, MSG_INFO, P2P_EVENT_GROUP_FORMATION_SUCCESS);
ssid = wpa_s->current_ssid;
if (ssid && ssid->mode == WPAS_MODE_P2P_GROUP_FORMATION) {
ssid->mode = WPAS_MODE_P2P_GO;
p2p_group_notif_formation_done(wpa_s->p2p_group);
wpa_supplicant_ap_mac_addr_filter(wpa_s, NULL);
}
persistent = 0;
if (ssid) {
ssid_txt = wpa_ssid_txt(ssid->ssid, ssid->ssid_len);
client = ssid->mode == WPAS_MODE_INFRA;
if (ssid->mode == WPAS_MODE_P2P_GO) {
persistent = ssid->p2p_persistent_group;
os_memcpy(go_dev_addr, wpa_s->parent->own_addr,
ETH_ALEN);
} else
persistent = wpas_p2p_persistent_group(wpa_s,
go_dev_addr,
ssid->ssid,
ssid->ssid_len);
} else {
ssid_txt = "";
client = wpa_s->p2p_group_interface ==
P2P_GROUP_INTERFACE_CLIENT;
os_memset(go_dev_addr, 0, ETH_ALEN);
}
wpa_s->show_group_started = 0;
if (client) {
/*
* Indicate event only after successfully completed 4-way
* handshake, i.e., when the interface is ready for data
* packets.
*/
wpa_s->show_group_started = 1;
} else if (ssid && ssid->passphrase == NULL && ssid->psk_set) {
char psk[65];
wpa_snprintf_hex(psk, sizeof(psk), ssid->psk, 32);
wpa_msg(wpa_s->parent, MSG_INFO, P2P_EVENT_GROUP_STARTED
"%s GO ssid=\"%s\" freq=%d psk=%s go_dev_addr=" MACSTR
"%s",
wpa_s->ifname, ssid_txt, ssid->frequency, psk,
MAC2STR(go_dev_addr),
persistent ? " [PERSISTENT]" : "");
wpas_p2p_cross_connect_setup(wpa_s);
wpas_p2p_set_group_idle_timeout(wpa_s);
} else {
wpa_msg(wpa_s->parent, MSG_INFO, P2P_EVENT_GROUP_STARTED
"%s GO ssid=\"%s\" freq=%d passphrase=\"%s\" "
"go_dev_addr=" MACSTR "%s",
wpa_s->ifname, ssid_txt, ssid ? ssid->frequency : 0,
ssid && ssid->passphrase ? ssid->passphrase : "",
MAC2STR(go_dev_addr),
persistent ? " [PERSISTENT]" : "");
wpas_p2p_cross_connect_setup(wpa_s);
wpas_p2p_set_group_idle_timeout(wpa_s);
}
if (persistent)
network_id = wpas_p2p_store_persistent_group(wpa_s->parent,
ssid, go_dev_addr);
if (network_id < 0 && ssid)
network_id = ssid->id;
if (!client)
wpas_notify_p2p_group_started(wpa_s, ssid, network_id, 0);
}
static struct wpa_supplicant *
wpas_get_tx_interface(struct wpa_supplicant *wpa_s, const u8 *src)
{
struct wpa_supplicant *iface;
if (os_memcmp(src, wpa_s->own_addr, ETH_ALEN) == 0)
return wpa_s;
/*
* Try to find a group interface that matches with the source address.
*/
iface = wpa_s->global->ifaces;
while (iface) {
if (os_memcmp(wpa_s->pending_action_src,
iface->own_addr, ETH_ALEN) == 0)
break;
iface = iface->next;
}
if (iface) {
wpa_printf(MSG_DEBUG, "P2P: Use group interface %s "
"instead of interface %s for Action TX",
iface->ifname, wpa_s->ifname);
return iface;
}
return wpa_s;
}
static void wpas_send_action_cb(void *eloop_ctx, void *timeout_ctx)
{
struct wpa_supplicant *wpa_s = eloop_ctx;
struct wpa_supplicant *iface;
int res;
int without_roc;
without_roc = wpa_s->pending_action_without_roc;
wpa_s->pending_action_without_roc = 0;
wpa_printf(MSG_DEBUG, "P2P: Send Action callback (without_roc=%d "
"pending_action_tx=%p)",
without_roc, wpa_s->pending_action_tx);
if (wpa_s->pending_action_tx == NULL)
return;
/*
* This call is likely going to be on the P2P device instance if the
* driver uses a separate interface for that purpose. However, some
* Action frames are actually sent within a P2P Group and when that is
* the case, we need to follow power saving (e.g., GO buffering the
* frame for a client in PS mode or a client following the advertised
* NoA from its GO). To make that easier for the driver, select the
* correct group interface here.
*/
iface = wpas_get_tx_interface(wpa_s, wpa_s->pending_action_src);
if (wpa_s->off_channel_freq != wpa_s->pending_action_freq &&
wpa_s->pending_action_freq != 0 &&
wpa_s->pending_action_freq != iface->assoc_freq) {
wpa_printf(MSG_DEBUG, "P2P: Pending Action frame TX "
"waiting for another freq=%u (off_channel_freq=%u "
"assoc_freq=%u)",
wpa_s->pending_action_freq,
wpa_s->off_channel_freq,
iface->assoc_freq);
if (without_roc && wpa_s->off_channel_freq == 0) {
/*
* We may get here if wpas_send_action() found us to be
* on the correct channel, but remain-on-channel cancel
* event was received before getting here.
*/
wpa_printf(MSG_DEBUG, "P2P: Schedule "
"remain-on-channel to send Action frame");
if (wpa_drv_remain_on_channel(
wpa_s, wpa_s->pending_action_freq, 200) <
0) {
wpa_printf(MSG_DEBUG, "P2P: Failed to request "
"driver to remain on channel (%u "
"MHz) for Action Frame TX",
wpa_s->pending_action_freq);
} else {
wpa_s->off_channel_freq = 0;
wpa_s->roc_waiting_drv_freq =
wpa_s->pending_action_freq;
}
}
return;
}
wpa_printf(MSG_DEBUG, "P2P: Sending pending Action frame to "
MACSTR " using interface %s",
MAC2STR(wpa_s->pending_action_dst), iface->ifname);
res = wpa_drv_send_action(iface, wpa_s->pending_action_freq, 0,
wpa_s->pending_action_dst,
wpa_s->pending_action_src,
wpa_s->pending_action_bssid,
wpabuf_head(wpa_s->pending_action_tx),
wpabuf_len(wpa_s->pending_action_tx));
if (res) {
wpa_printf(MSG_DEBUG, "P2P: Failed to send the pending "
"Action frame");
/*
* Use fake TX status event to allow P2P state machine to
* continue.
*/
wpas_send_action_tx_status(
wpa_s, wpa_s->pending_action_dst,
wpabuf_head(wpa_s->pending_action_tx),
wpabuf_len(wpa_s->pending_action_tx),
P2P_SEND_ACTION_FAILED);
}
}
void wpas_send_action_tx_status(struct wpa_supplicant *wpa_s, const u8 *dst,
const u8 *data, size_t data_len,
enum p2p_send_action_result result)
{
if (wpa_s->global->p2p == NULL || wpa_s->global->p2p_disabled)
return;
if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_MGMT)
return;
if (wpa_s->pending_action_tx == NULL) {
wpa_printf(MSG_DEBUG, "P2P: Ignore Action TX status - no "
"pending operation");
return;
}
if (os_memcmp(dst, wpa_s->pending_action_dst, ETH_ALEN) != 0) {
wpa_printf(MSG_DEBUG, "P2P: Ignore Action TX status - unknown "
"destination address");
return;
}
wpabuf_free(wpa_s->pending_action_tx);
wpa_s->pending_action_tx = NULL;
p2p_send_action_cb(wpa_s->global->p2p, wpa_s->pending_action_freq,
wpa_s->pending_action_dst,
wpa_s->pending_action_src,
wpa_s->pending_action_bssid,
result);
if (wpa_s->pending_pd_before_join &&
(os_memcmp(wpa_s->pending_action_dst, wpa_s->pending_join_dev_addr,
ETH_ALEN) == 0 ||
os_memcmp(wpa_s->pending_action_dst,
wpa_s->pending_join_iface_addr, ETH_ALEN) == 0)) {
wpa_s->pending_pd_before_join = 0;
wpa_printf(MSG_DEBUG, "P2P: Starting pending "
"join-existing-group operation");
wpas_p2p_join_start(wpa_s);
}
}
static int wpas_send_action(void *ctx, unsigned int freq, const u8 *dst,
const u8 *src, const u8 *bssid, const u8 *buf,
size_t len, unsigned int wait_time)
{
struct wpa_supplicant *wpa_s = ctx;
wpa_printf(MSG_DEBUG, "P2P: Send action frame: freq=%d dst=" MACSTR
" src=" MACSTR " bssid=" MACSTR " len=%d",
freq, MAC2STR(dst), MAC2STR(src), MAC2STR(bssid),
(int) len);
if (wpa_s->pending_action_tx) {
wpa_printf(MSG_DEBUG, "P2P: Dropped pending Action frame TX "
"to " MACSTR, MAC2STR(wpa_s->pending_action_dst));
wpabuf_free(wpa_s->pending_action_tx);
}
wpa_s->pending_action_tx = wpabuf_alloc(len);
if (wpa_s->pending_action_tx == NULL) {
wpa_printf(MSG_DEBUG, "P2P: Failed to allocate Action frame "
"TX buffer (len=%llu)", (unsigned long long) len);
return -1;
}
wpabuf_put_data(wpa_s->pending_action_tx, buf, len);
os_memcpy(wpa_s->pending_action_src, src, ETH_ALEN);
os_memcpy(wpa_s->pending_action_dst, dst, ETH_ALEN);
os_memcpy(wpa_s->pending_action_bssid, bssid, ETH_ALEN);
wpa_s->pending_action_freq = freq;
if (freq != 0 && wpa_s->drv_flags & WPA_DRIVER_FLAGS_OFFCHANNEL_TX) {
struct wpa_supplicant *iface;
iface = wpas_get_tx_interface(wpa_s, wpa_s->pending_action_src);
wpa_s->action_tx_wait_time = wait_time;
return wpa_drv_send_action(iface, wpa_s->pending_action_freq,
wait_time, wpa_s->pending_action_dst,
wpa_s->pending_action_src,
wpa_s->pending_action_bssid,
wpabuf_head(wpa_s->pending_action_tx),
wpabuf_len(wpa_s->pending_action_tx));
}
if (freq) {
struct wpa_supplicant *tx_iface;
tx_iface = wpas_get_tx_interface(wpa_s, src);
if (tx_iface->assoc_freq == freq) {
wpa_printf(MSG_DEBUG, "P2P: Already on requested "
"channel (TX interface operating channel)");
freq = 0;
}
}
if (wpa_s->off_channel_freq == freq || freq == 0) {
wpa_printf(MSG_DEBUG, "P2P: Already on requested channel; "
"send Action frame immediately");
/* TODO: Would there ever be need to extend the current
* duration on the channel? */
wpa_s->pending_action_without_roc = 1;
eloop_cancel_timeout(wpas_send_action_cb, wpa_s, NULL);
eloop_register_timeout(0, 0, wpas_send_action_cb, wpa_s, NULL);
return 0;
}
wpa_s->pending_action_without_roc = 0;
if (wpa_s->roc_waiting_drv_freq == freq) {
wpa_printf(MSG_DEBUG, "P2P: Already waiting for driver to get "
"to frequency %u MHz; continue waiting to send the "
"Action frame", freq);
return 0;
}
wpa_printf(MSG_DEBUG, "P2P: Schedule Action frame to be transmitted "
"once the driver gets to the requested channel");
if (wait_time > wpa_s->max_remain_on_chan)
wait_time = wpa_s->max_remain_on_chan;
if (wpa_drv_remain_on_channel(wpa_s, freq, wait_time) < 0) {
wpa_printf(MSG_DEBUG, "P2P: Failed to request driver "
"to remain on channel (%u MHz) for Action "
"Frame TX", freq);
return -1;
}
wpa_s->off_channel_freq = 0;
wpa_s->roc_waiting_drv_freq = freq;
return 0;
}
static void wpas_send_action_done(void *ctx)
{
struct wpa_supplicant *wpa_s = ctx;
wpa_printf(MSG_DEBUG, "P2P: Action frame sequence done notification");
wpabuf_free(wpa_s->pending_action_tx);
wpa_s->pending_action_tx = NULL;
if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_OFFCHANNEL_TX &&
wpa_s->action_tx_wait_time)
wpa_drv_send_action_cancel_wait(wpa_s);
if (wpa_s->off_channel_freq || wpa_s->roc_waiting_drv_freq) {
wpa_drv_cancel_remain_on_channel(wpa_s);
wpa_s->off_channel_freq = 0;
wpa_s->roc_waiting_drv_freq = 0;
}
}
static int wpas_copy_go_neg_results(struct wpa_supplicant *wpa_s,
struct p2p_go_neg_results *params)
{
if (wpa_s->go_params == NULL) {
wpa_s->go_params = os_malloc(sizeof(*params));
if (wpa_s->go_params == NULL)
return -1;
}
os_memcpy(wpa_s->go_params, params, sizeof(*params));
return 0;
}
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,
MAC2STR(res->peer_interface_addr));
wpa_hexdump_ascii(MSG_DEBUG, "P2P: Start WPS Enrollee for SSID",
res->ssid, res->ssid_len);
wpa_supplicant_ap_deinit(wpa_s);
wpas_copy_go_neg_results(wpa_s, res);
if (res->wps_method == WPS_PBC)
wpas_wps_start_pbc(wpa_s, res->peer_interface_addr, 1);
else {
u16 dev_pw_id = DEV_PW_DEFAULT;
if (wpa_s->p2p_wps_method == WPS_PIN_KEYPAD)
dev_pw_id = DEV_PW_REGISTRAR_SPECIFIED;
wpas_wps_start_pin(wpa_s, res->peer_interface_addr,
wpa_s->p2p_pin, 1, dev_pw_id);
}
}
static void p2p_go_configured(void *ctx, void *data)
{
struct wpa_supplicant *wpa_s = ctx;
struct p2p_go_neg_results *params = data;
struct wpa_ssid *ssid;
int network_id = -1;
ssid = wpa_s->current_ssid;
if (ssid && ssid->mode == WPAS_MODE_P2P_GO) {
wpa_printf(MSG_DEBUG, "P2P: Group setup without provisioning");
if (wpa_s->global->p2p_group_formation == wpa_s)
wpa_s->global->p2p_group_formation = NULL;
wpa_msg(wpa_s->parent, MSG_INFO, P2P_EVENT_GROUP_STARTED
"%s GO ssid=\"%s\" freq=%d passphrase=\"%s\" "
"go_dev_addr=" MACSTR "%s",
wpa_s->ifname,
wpa_ssid_txt(ssid->ssid, ssid->ssid_len),
ssid->frequency,
params->passphrase ? params->passphrase : "",
MAC2STR(wpa_s->parent->own_addr),
params->persistent_group ? " [PERSISTENT]" : "");
if (params->persistent_group)
network_id = wpas_p2p_store_persistent_group(
wpa_s->parent, ssid,
wpa_s->parent->own_addr);
if (network_id < 0)
network_id = ssid->id;
wpas_notify_p2p_group_started(wpa_s, ssid, network_id, 0);
wpas_p2p_cross_connect_setup(wpa_s);
wpas_p2p_set_group_idle_timeout(wpa_s);
return;
}
wpa_printf(MSG_DEBUG, "P2P: Setting up WPS for GO provisioning");
if (wpa_supplicant_ap_mac_addr_filter(wpa_s,
params->peer_interface_addr)) {
wpa_printf(MSG_DEBUG, "P2P: Failed to setup MAC address "
"filtering");
return;
}
if (params->wps_method == WPS_PBC)
wpa_supplicant_ap_wps_pbc(wpa_s, params->peer_interface_addr,
NULL);
else if (wpa_s->p2p_pin[0])
wpa_supplicant_ap_wps_pin(wpa_s, params->peer_interface_addr,
wpa_s->p2p_pin, NULL, 0);
os_free(wpa_s->go_params);
wpa_s->go_params = NULL;
}
static void wpas_start_wps_go(struct wpa_supplicant *wpa_s,
struct p2p_go_neg_results *params,
int group_formation)
{
struct wpa_ssid *ssid;
if (wpas_copy_go_neg_results(wpa_s, params) < 0)
return;
ssid = wpa_config_add_network(wpa_s->conf);
if (ssid == NULL)
return;
wpa_config_set_network_defaults(ssid);
ssid->temporary = 1;
ssid->p2p_group = 1;
ssid->p2p_persistent_group = params->persistent_group;
ssid->mode = group_formation ? WPAS_MODE_P2P_GROUP_FORMATION :
WPAS_MODE_P2P_GO;
ssid->frequency = params->freq;
ssid->ssid = os_zalloc(params->ssid_len + 1);
if (ssid->ssid) {
os_memcpy(ssid->ssid, params->ssid, params->ssid_len);
ssid->ssid_len = params->ssid_len;
}
ssid->auth_alg = WPA_AUTH_ALG_OPEN;
ssid->key_mgmt = WPA_KEY_MGMT_PSK;
ssid->proto = WPA_PROTO_RSN;
ssid->pairwise_cipher = WPA_CIPHER_CCMP;
ssid->passphrase = os_strdup(params->passphrase);
wpa_s->ap_configured_cb = p2p_go_configured;
wpa_s->ap_configured_cb_ctx = wpa_s;
wpa_s->ap_configured_cb_data = wpa_s->go_params;
wpa_s->connect_without_scan = ssid;
wpa_s->reassociate = 1;
wpa_s->disconnected = 0;
wpa_supplicant_req_scan(wpa_s, 0, 0);
}
static void wpas_p2p_clone_config(struct wpa_supplicant *dst,
const struct wpa_supplicant *src)
{
struct wpa_config *d;
const struct wpa_config *s;
d = dst->conf;
s = src->conf;
#define C(n) if (s->n) d->n = os_strdup(s->n)
C(device_name);
C(manufacturer);
C(model_name);
C(model_number);
C(serial_number);
C(config_methods);
#undef C
os_memcpy(d->device_type, s->device_type, WPS_DEV_TYPE_LEN);
os_memcpy(d->sec_device_type, s->sec_device_type,
sizeof(d->sec_device_type));
d->num_sec_device_types = s->num_sec_device_types;
d->p2p_group_idle = s->p2p_group_idle;
d->p2p_intra_bss = s->p2p_intra_bss;
}
static int wpas_p2p_add_group_interface(struct wpa_supplicant *wpa_s,
enum wpa_driver_if_type type)
{
char ifname[120], force_ifname[120];
if (wpa_s->pending_interface_name[0]) {
wpa_printf(MSG_DEBUG, "P2P: Pending virtual interface exists "
"- skip creation of a new one");
if (is_zero_ether_addr(wpa_s->pending_interface_addr)) {
wpa_printf(MSG_DEBUG, "P2P: Pending virtual address "
"unknown?! ifname='%s'",
wpa_s->pending_interface_name);
return -1;
}
return 0;
}
os_snprintf(ifname, sizeof(ifname), "p2p-%s-%d", wpa_s->ifname,
wpa_s->p2p_group_idx);
if (os_strlen(ifname) >= IFNAMSIZ &&
os_strlen(wpa_s->ifname) < IFNAMSIZ) {
/* Try to avoid going over the IFNAMSIZ length limit */
os_snprintf(ifname, sizeof(ifname), "p2p-%d",
wpa_s->p2p_group_idx);
}
force_ifname[0] = '\0';
wpa_printf(MSG_DEBUG, "P2P: Create a new interface %s for the group",
ifname);
wpa_s->p2p_group_idx++;
wpa_s->pending_interface_type = type;
if (wpa_drv_if_add(wpa_s, type, ifname, NULL, NULL, force_ifname,
wpa_s->pending_interface_addr, NULL) < 0) {
wpa_printf(MSG_ERROR, "P2P: Failed to create new group "
"interface");
return -1;
}
if (force_ifname[0]) {
wpa_printf(MSG_DEBUG, "P2P: Driver forced interface name %s",
force_ifname);
os_strlcpy(wpa_s->pending_interface_name, force_ifname,
sizeof(wpa_s->pending_interface_name));
} else
os_strlcpy(wpa_s->pending_interface_name, ifname,
sizeof(wpa_s->pending_interface_name));
wpa_printf(MSG_DEBUG, "P2P: Created pending virtual interface %s addr "
MACSTR, wpa_s->pending_interface_name,
MAC2STR(wpa_s->pending_interface_addr));
return 0;
}
static void wpas_p2p_remove_pending_group_interface(
struct wpa_supplicant *wpa_s)
{
if (!wpa_s->pending_interface_name[0] ||
is_zero_ether_addr(wpa_s->pending_interface_addr))
return; /* No pending virtual interface */
wpa_printf(MSG_DEBUG, "P2P: Removing pending group interface %s",
wpa_s->pending_interface_name);
wpa_drv_if_remove(wpa_s, wpa_s->pending_interface_type,
wpa_s->pending_interface_name);
os_memset(wpa_s->pending_interface_addr, 0, ETH_ALEN);
wpa_s->pending_interface_name[0] = '\0';
}
static struct wpa_supplicant *
wpas_p2p_init_group_interface(struct wpa_supplicant *wpa_s, int go)
{
struct wpa_interface iface;
struct wpa_supplicant *group_wpa_s;
if (!wpa_s->pending_interface_name[0]) {
wpa_printf(MSG_ERROR, "P2P: No pending group interface");
if (!wpas_p2p_create_iface(wpa_s))
return NULL;
/*
* Something has forced us to remove the pending interface; try
* to create a new one and hope for the best that we will get
* the same local address.
*/
if (wpas_p2p_add_group_interface(wpa_s, go ? WPA_IF_P2P_GO :
WPA_IF_P2P_CLIENT) < 0)
return NULL;
}
os_memset(&iface, 0, sizeof(iface));
iface.ifname = wpa_s->pending_interface_name;
iface.driver = wpa_s->driver->name;
iface.ctrl_interface = wpa_s->conf->ctrl_interface;
iface.driver_param = wpa_s->conf->driver_param;
group_wpa_s = wpa_supplicant_add_iface(wpa_s->global, &iface);
if (group_wpa_s == NULL) {
wpa_printf(MSG_ERROR, "P2P: Failed to create new "
"wpa_supplicant interface");
return NULL;
}
wpa_s->pending_interface_name[0] = '\0';
group_wpa_s->parent = wpa_s;
group_wpa_s->p2p_group_interface = go ? P2P_GROUP_INTERFACE_GO :
P2P_GROUP_INTERFACE_CLIENT;
wpa_s->global->p2p_group_formation = group_wpa_s;
wpas_p2p_clone_config(group_wpa_s, wpa_s);
return group_wpa_s;
}
static void wpas_p2p_group_formation_timeout(void *eloop_ctx,
void *timeout_ctx)
{
struct wpa_supplicant *wpa_s = eloop_ctx;
wpa_printf(MSG_DEBUG, "P2P: Group Formation timed out");
if (wpa_s->global->p2p)
p2p_group_formation_failed(wpa_s->global->p2p);
else if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_MGMT)
wpa_drv_p2p_group_formation_failed(wpa_s);
wpas_group_formation_completed(wpa_s, 0);
}
void wpas_go_neg_completed(void *ctx, struct p2p_go_neg_results *res)
{
struct wpa_supplicant *wpa_s = ctx;
if (wpa_s->off_channel_freq || wpa_s->roc_waiting_drv_freq) {
wpa_drv_cancel_remain_on_channel(wpa_s);
wpa_s->off_channel_freq = 0;
wpa_s->roc_waiting_drv_freq = 0;
}
if (res->status) {
wpa_msg(wpa_s, MSG_INFO, P2P_EVENT_GO_NEG_FAILURE "status=%d",
res->status);
wpas_notify_p2p_go_neg_completed(wpa_s, res->status);
wpas_p2p_remove_pending_group_interface(wpa_s);
return;
}
wpa_msg(wpa_s, MSG_INFO, P2P_EVENT_GO_NEG_SUCCESS);
wpas_notify_p2p_go_neg_completed(wpa_s, P2P_SC_SUCCESS);
if (wpa_s->create_p2p_iface) {
struct wpa_supplicant *group_wpa_s =
wpas_p2p_init_group_interface(wpa_s, res->role_go);
if (group_wpa_s == NULL) {
wpas_p2p_remove_pending_group_interface(wpa_s);
return;
}
if (group_wpa_s != wpa_s) {
os_memcpy(group_wpa_s->p2p_pin, wpa_s->p2p_pin,
sizeof(group_wpa_s->p2p_pin));
group_wpa_s->p2p_wps_method = wpa_s->p2p_wps_method;
}
os_memset(wpa_s->pending_interface_addr, 0, ETH_ALEN);
wpa_s->pending_interface_name[0] = '\0';
group_wpa_s->p2p_in_provisioning = 1;
if (res->role_go)
wpas_start_wps_go(group_wpa_s, res, 1);
else
wpas_start_wps_enrollee(group_wpa_s, res);
} else {
wpa_s->p2p_in_provisioning = 1;
wpa_s->global->p2p_group_formation = wpa_s;
if (res->role_go)
wpas_start_wps_go(wpa_s, res, 1);
else
wpas_start_wps_enrollee(ctx, res);
}
wpa_s->p2p_long_listen = 0;
eloop_cancel_timeout(wpas_p2p_long_listen_timeout, wpa_s, NULL);
eloop_cancel_timeout(wpas_p2p_group_formation_timeout, wpa_s, NULL);
eloop_register_timeout(15 + res->peer_config_timeout / 100,
(res->peer_config_timeout % 100) * 10000,
wpas_p2p_group_formation_timeout, wpa_s, NULL);
}
void wpas_go_neg_req_rx(void *ctx, const u8 *src, u16 dev_passwd_id)
{
struct wpa_supplicant *wpa_s = ctx;
wpa_msg(wpa_s, MSG_INFO, P2P_EVENT_GO_NEG_REQUEST MACSTR
" dev_passwd_id=%u", MAC2STR(src), dev_passwd_id);
wpas_notify_p2p_go_neg_req(wpa_s, src, dev_passwd_id);
}
void wpas_dev_found(void *ctx, const u8 *addr,
const struct p2p_peer_info *info,
int new_device)
{
struct wpa_supplicant *wpa_s = ctx;
char devtype[WPS_DEV_TYPE_BUFSIZE];
wpa_msg(wpa_s, MSG_INFO, P2P_EVENT_DEVICE_FOUND MACSTR
" p2p_dev_addr=" MACSTR
" pri_dev_type=%s name='%s' config_methods=0x%x "
"dev_capab=0x%x group_capab=0x%x",
MAC2STR(addr), MAC2STR(info->p2p_device_addr),
wps_dev_type_bin2str(info->pri_dev_type, devtype,
sizeof(devtype)),
info->device_name, info->config_methods,
info->dev_capab, info->group_capab);
wpas_notify_p2p_device_found(ctx, info->p2p_device_addr, new_device);
}
static void wpas_dev_lost(void *ctx, const u8 *dev_addr)
{
struct wpa_supplicant *wpa_s = ctx;
wpas_notify_p2p_device_lost(wpa_s, dev_addr);
}
static int wpas_start_listen(void *ctx, unsigned int freq,
unsigned int duration,
const struct wpabuf *probe_resp_ie)
{
struct wpa_supplicant *wpa_s = ctx;
wpa_drv_set_ap_wps_ie(wpa_s, NULL, probe_resp_ie, NULL);
if (wpa_drv_probe_req_report(wpa_s, 1) < 0) {
wpa_printf(MSG_DEBUG, "P2P: Failed to request the driver to "
"report received Probe Request frames");
return -1;
}
wpa_s->pending_listen_freq = freq;
wpa_s->pending_listen_duration = duration;
if (wpa_drv_remain_on_channel(wpa_s, freq, duration) < 0) {
wpa_printf(MSG_DEBUG, "P2P: Failed to request the driver "
"to remain on channel (%u MHz) for Listen "
"state", freq);
wpa_s->pending_listen_freq = 0;
return -1;
}
wpa_s->off_channel_freq = 0;
wpa_s->roc_waiting_drv_freq = freq;
return 0;
}
static void wpas_stop_listen(void *ctx)
{
struct wpa_supplicant *wpa_s = ctx;
if (wpa_s->off_channel_freq || wpa_s->roc_waiting_drv_freq) {
wpa_drv_cancel_remain_on_channel(wpa_s);
wpa_s->off_channel_freq = 0;
wpa_s->roc_waiting_drv_freq = 0;
}
wpa_drv_set_ap_wps_ie(wpa_s, NULL, NULL, NULL);
wpa_drv_probe_req_report(wpa_s, 0);
}
static int wpas_send_probe_resp(void *ctx, const struct wpabuf *buf)
{
struct wpa_supplicant *wpa_s = ctx;
return wpa_drv_send_mlme(wpa_s, wpabuf_head(buf), wpabuf_len(buf));
}
static struct p2p_srv_bonjour *
wpas_p2p_service_get_bonjour(struct wpa_supplicant *wpa_s,
const struct wpabuf *query)
{
struct p2p_srv_bonjour *bsrv;
size_t len;
len = wpabuf_len(query);
dl_list_for_each(bsrv, &wpa_s->global->p2p_srv_bonjour,
struct p2p_srv_bonjour, list) {
if (len == wpabuf_len(bsrv->query) &&
os_memcmp(wpabuf_head(query), wpabuf_head(bsrv->query),
len) == 0)
return bsrv;
}
return NULL;
}
static struct p2p_srv_upnp *
wpas_p2p_service_get_upnp(struct wpa_supplicant *wpa_s, u8 version,
const char *service)
{
struct p2p_srv_upnp *usrv;
dl_list_for_each(usrv, &wpa_s->global->p2p_srv_upnp,
struct p2p_srv_upnp, list) {
if (version == usrv->version &&
os_strcmp(service, usrv->service) == 0)
return usrv;
}
return NULL;
}
static void wpas_sd_add_proto_not_avail(struct wpabuf *resp, u8 srv_proto,
u8 srv_trans_id)
{
u8 *len_pos;
if (wpabuf_tailroom(resp) < 5)
return;
/* Length (to be filled) */
len_pos = wpabuf_put(resp, 2);
wpabuf_put_u8(resp, srv_proto);
wpabuf_put_u8(resp, srv_trans_id);
/* Status Code */
wpabuf_put_u8(resp, P2P_SD_PROTO_NOT_AVAILABLE);
/* Response Data: empty */
WPA_PUT_LE16(len_pos, (u8 *) wpabuf_put(resp, 0) - len_pos - 2);
}
static void wpas_sd_all_bonjour(struct wpa_supplicant *wpa_s,
struct wpabuf *resp, u8 srv_trans_id)
{
struct p2p_srv_bonjour *bsrv;
u8 *len_pos;
wpa_printf(MSG_DEBUG, "P2P: SD Request for all Bonjour services");
if (dl_list_empty(&wpa_s->global->p2p_srv_bonjour)) {
wpa_printf(MSG_DEBUG, "P2P: Bonjour protocol not available");
return;
}
dl_list_for_each(bsrv, &wpa_s->global->p2p_srv_bonjour,
struct p2p_srv_bonjour, list) {
if (wpabuf_tailroom(resp) <
5 + wpabuf_len(bsrv->query) + wpabuf_len(bsrv->resp))
return;
/* Length (to be filled) */
len_pos = wpabuf_put(resp, 2);
wpabuf_put_u8(resp, P2P_SERV_BONJOUR);
wpabuf_put_u8(resp, srv_trans_id);
/* Status Code */
wpabuf_put_u8(resp, P2P_SD_SUCCESS);
wpa_hexdump_ascii(MSG_DEBUG, "P2P: Matching Bonjour service",
wpabuf_head(bsrv->resp),
wpabuf_len(bsrv->resp));
/* Response Data */
wpabuf_put_buf(resp, bsrv->query); /* Key */
wpabuf_put_buf(resp, bsrv->resp); /* Value */
WPA_PUT_LE16(len_pos, (u8 *) wpabuf_put(resp, 0) - len_pos -
2);
}
}
static void wpas_sd_req_bonjour(struct wpa_supplicant *wpa_s,
struct wpabuf *resp, u8 srv_trans_id,
const u8 *query, size_t query_len)
{
struct p2p_srv_bonjour *bsrv;
struct wpabuf buf;
u8 *len_pos;
wpa_hexdump_ascii(MSG_DEBUG, "P2P: SD Request for Bonjour",
query, query_len);
if (dl_list_empty(&wpa_s->global->p2p_srv_bonjour)) {
wpa_printf(MSG_DEBUG, "P2P: Bonjour protocol not available");
wpas_sd_add_proto_not_avail(resp, P2P_SERV_BONJOUR,
srv_trans_id);
return;
}
if (query_len == 0) {
wpas_sd_all_bonjour(wpa_s, resp, srv_trans_id);
return;
}
if (wpabuf_tailroom(resp) < 5)
return;
/* Length (to be filled) */
len_pos = wpabuf_put(resp, 2);
wpabuf_put_u8(resp, P2P_SERV_BONJOUR);
wpabuf_put_u8(resp, srv_trans_id);
wpabuf_set(&buf, query, query_len);
bsrv = wpas_p2p_service_get_bonjour(wpa_s, &buf);
if (bsrv == NULL) {
wpa_printf(MSG_DEBUG, "P2P: Requested Bonjour service not "
"available");
/* Status Code */
wpabuf_put_u8(resp, P2P_SD_REQUESTED_INFO_NOT_AVAILABLE);
/* Response Data: empty */
WPA_PUT_LE16(len_pos, (u8 *) wpabuf_put(resp, 0) - len_pos -
2);
return;
}
/* Status Code */
wpabuf_put_u8(resp, P2P_SD_SUCCESS);
wpa_hexdump_ascii(MSG_DEBUG, "P2P: Matching Bonjour service",
wpabuf_head(bsrv->resp), wpabuf_len(bsrv->resp));
if (wpabuf_tailroom(resp) >=
wpabuf_len(bsrv->query) + wpabuf_len(bsrv->resp)) {
/* Response Data */
wpabuf_put_buf(resp, bsrv->query); /* Key */
wpabuf_put_buf(resp, bsrv->resp); /* Value */
}
WPA_PUT_LE16(len_pos, (u8 *) wpabuf_put(resp, 0) - len_pos - 2);
}
static void wpas_sd_all_upnp(struct wpa_supplicant *wpa_s,
struct wpabuf *resp, u8 srv_trans_id)
{
struct p2p_srv_upnp *usrv;
u8 *len_pos;
wpa_printf(MSG_DEBUG, "P2P: SD Request for all UPnP services");
if (dl_list_empty(&wpa_s->global->p2p_srv_upnp)) {
wpa_printf(MSG_DEBUG, "P2P: UPnP protocol not available");
return;
}
dl_list_for_each(usrv, &wpa_s->global->p2p_srv_upnp,
struct p2p_srv_upnp, list) {
if (wpabuf_tailroom(resp) < 5 + 1 + os_strlen(usrv->service))
return;
/* Length (to be filled) */
len_pos = wpabuf_put(resp, 2);
wpabuf_put_u8(resp, P2P_SERV_UPNP);
wpabuf_put_u8(resp, srv_trans_id);
/* Status Code */
wpabuf_put_u8(resp, P2P_SD_SUCCESS);
/* Response Data */
wpabuf_put_u8(resp, usrv->version);
wpa_printf(MSG_DEBUG, "P2P: Matching UPnP Service: %s",
usrv->service);
wpabuf_put_str(resp, usrv->service);
WPA_PUT_LE16(len_pos, (u8 *) wpabuf_put(resp, 0) - len_pos -
2);
}
}
static void wpas_sd_req_upnp(struct wpa_supplicant *wpa_s,
struct wpabuf *resp, u8 srv_trans_id,
const u8 *query, size_t query_len)
{
struct p2p_srv_upnp *usrv;
u8 *len_pos;
u8 version;
char *str;
int count = 0;
wpa_hexdump_ascii(MSG_DEBUG, "P2P: SD Request for UPnP",
query, query_len);
if (dl_list_empty(&wpa_s->global->p2p_srv_upnp)) {
wpa_printf(MSG_DEBUG, "P2P: UPnP protocol not available");
wpas_sd_add_proto_not_avail(resp, P2P_SERV_UPNP,
srv_trans_id);
return;
}
if (query_len == 0) {
wpas_sd_all_upnp(wpa_s, resp, srv_trans_id);
return;
}
if (wpabuf_tailroom(resp) < 5)
return;
/* Length (to be filled) */
len_pos = wpabuf_put(resp, 2);
wpabuf_put_u8(resp, P2P_SERV_UPNP);
wpabuf_put_u8(resp, srv_trans_id);
version = query[0];
str = os_malloc(query_len);
if (str == NULL)
return;
os_memcpy(str, query + 1, query_len - 1);
str[query_len - 1] = '\0';
dl_list_for_each(usrv, &wpa_s->global->p2p_srv_upnp,
struct p2p_srv_upnp, list) {
if (version != usrv->version)
continue;
if (os_strcmp(str, "ssdp:all") != 0 &&
os_strstr(usrv->service, str) == NULL)
continue;
if (wpabuf_tailroom(resp) < 2)
break;
if (count == 0) {
/* Status Code */
wpabuf_put_u8(resp, P2P_SD_SUCCESS);
/* Response Data */
wpabuf_put_u8(resp, version);
} else
wpabuf_put_u8(resp, ',');
count++;
wpa_printf(MSG_DEBUG, "P2P: Matching UPnP Service: %s",
usrv->service);
if (wpabuf_tailroom(resp) < os_strlen(usrv->service))
break;
wpabuf_put_str(resp, usrv->service);
}
os_free(str);
if (count == 0) {
wpa_printf(MSG_DEBUG, "P2P: Requested UPnP service not "
"available");
/* Status Code */
wpabuf_put_u8(resp, P2P_SD_REQUESTED_INFO_NOT_AVAILABLE);
/* Response Data: empty */
}
WPA_PUT_LE16(len_pos, (u8 *) wpabuf_put(resp, 0) - len_pos - 2);
}
void wpas_sd_request(void *ctx, int freq, const u8 *sa, u8 dialog_token,
u16 update_indic, const u8 *tlvs, size_t tlvs_len)
{
struct wpa_supplicant *wpa_s = ctx;
const u8 *pos = tlvs;
const u8 *end = tlvs + tlvs_len;
const u8 *tlv_end;
u16 slen;
struct wpabuf *resp;
u8 srv_proto, srv_trans_id;
size_t buf_len;
char *buf;
wpa_hexdump(MSG_MSGDUMP, "P2P: Service Discovery Request TLVs",
tlvs, tlvs_len);
buf_len = 2 * tlvs_len + 1;
buf = os_malloc(buf_len);
if (buf) {
wpa_snprintf_hex(buf, buf_len, tlvs, tlvs_len);
wpa_msg_ctrl(wpa_s, MSG_INFO, P2P_EVENT_SERV_DISC_REQ "%d "
MACSTR " %u %u %s",
freq, MAC2STR(sa), dialog_token, update_indic,
buf);
os_free(buf);
}
if (wpa_s->p2p_sd_over_ctrl_iface)
return; /* to be processed by an external program */
resp = wpabuf_alloc(10000);
if (resp == NULL)
return;
while (pos + 1 < end) {
wpa_printf(MSG_DEBUG, "P2P: Service Request TLV");
slen = WPA_GET_LE16(pos);
pos += 2;
if (pos + slen > end || slen < 2) {
wpa_printf(MSG_DEBUG, "P2P: Unexpected Query Data "
"length");
wpabuf_free(resp);
return;
}
tlv_end = pos + slen;
srv_proto = *pos++;
wpa_printf(MSG_DEBUG, "P2P: Service Protocol Type %u",
srv_proto);
srv_trans_id = *pos++;
wpa_printf(MSG_DEBUG, "P2P: Service Transaction ID %u",
srv_trans_id);
wpa_hexdump(MSG_MSGDUMP, "P2P: Query Data",
pos, tlv_end - pos);
if (wpa_s->force_long_sd) {
wpa_printf(MSG_DEBUG, "P2P: SD test - force long "
"response");
wpas_sd_all_bonjour(wpa_s, resp, srv_trans_id);
wpas_sd_all_upnp(wpa_s, resp, srv_trans_id);
goto done;
}
switch (srv_proto) {
case P2P_SERV_ALL_SERVICES:
wpa_printf(MSG_DEBUG, "P2P: Service Discovery Request "
"for all services");
if (dl_list_empty(&wpa_s->global->p2p_srv_upnp) &&
dl_list_empty(&wpa_s->global->p2p_srv_bonjour)) {
wpa_printf(MSG_DEBUG, "P2P: No service "
"discovery protocols available");
wpas_sd_add_proto_not_avail(
resp, P2P_SERV_ALL_SERVICES,
srv_trans_id);
break;
}
wpas_sd_all_bonjour(wpa_s, resp, srv_trans_id);
wpas_sd_all_upnp(wpa_s, resp, srv_trans_id);
break;
case P2P_SERV_BONJOUR:
wpas_sd_req_bonjour(wpa_s, resp, srv_trans_id,
pos, tlv_end - pos);
break;
case P2P_SERV_UPNP:
wpas_sd_req_upnp(wpa_s, resp, srv_trans_id,
pos, tlv_end - pos);
break;
default:
wpa_printf(MSG_DEBUG, "P2P: Unavailable service "
"protocol %u", srv_proto);
wpas_sd_add_proto_not_avail(resp, srv_proto,
srv_trans_id);
break;
}
pos = tlv_end;
}
done:
wpas_notify_p2p_sd_request(wpa_s, freq, sa, dialog_token,
update_indic, tlvs, tlvs_len);
wpas_p2p_sd_response(wpa_s, freq, sa, dialog_token, resp);
wpabuf_free(resp);
}
void wpas_sd_response(void *ctx, const u8 *sa, u16 update_indic,
const u8 *tlvs, size_t tlvs_len)
{
struct wpa_supplicant *wpa_s = ctx;
const u8 *pos = tlvs;
const u8 *end = tlvs + tlvs_len;
const u8 *tlv_end;
u16 slen;
size_t buf_len;
char *buf;
wpa_hexdump(MSG_MSGDUMP, "P2P: Service Discovery Response TLVs",
tlvs, tlvs_len);
if (tlvs_len > 1500) {
/* TODO: better way for handling this */
wpa_msg_ctrl(wpa_s, MSG_INFO,
P2P_EVENT_SERV_DISC_RESP MACSTR
" %u <long response: %u bytes>",
MAC2STR(sa), update_indic,
(unsigned int) tlvs_len);
} else {
buf_len = 2 * tlvs_len + 1;
buf = os_malloc(buf_len);
if (buf) {
wpa_snprintf_hex(buf, buf_len, tlvs, tlvs_len);
wpa_msg_ctrl(wpa_s, MSG_INFO,
P2P_EVENT_SERV_DISC_RESP MACSTR " %u %s",
MAC2STR(sa), update_indic, buf);
os_free(buf);
}
}
while (pos < end) {
u8 srv_proto, srv_trans_id, status;
wpa_printf(MSG_DEBUG, "P2P: Service Response TLV");
slen = WPA_GET_LE16(pos);
pos += 2;
if (pos + slen > end || slen < 3) {
wpa_printf(MSG_DEBUG, "P2P: Unexpected Response Data "
"length");
return;
}
tlv_end = pos + slen;
srv_proto = *pos++;
wpa_printf(MSG_DEBUG, "P2P: Service Protocol Type %u",
srv_proto);
srv_trans_id = *pos++;
wpa_printf(MSG_DEBUG, "P2P: Service Transaction ID %u",
srv_trans_id);
status = *pos++;
wpa_printf(MSG_DEBUG, "P2P: Status Code ID %u",
status);
wpa_hexdump(MSG_MSGDUMP, "P2P: Response Data",
pos, tlv_end - pos);
pos = tlv_end;
}
wpas_notify_p2p_sd_response(wpa_s, sa, update_indic, tlvs, tlvs_len);
}
void * wpas_p2p_sd_request(struct wpa_supplicant *wpa_s, const u8 *dst,
const struct wpabuf *tlvs)
{
if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_MGMT)
return (void *) wpa_drv_p2p_sd_request(wpa_s, dst, tlvs);
if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
return NULL;
return p2p_sd_request(wpa_s->global->p2p, dst, tlvs);
}
void * wpas_p2p_sd_request_upnp(struct wpa_supplicant *wpa_s, const u8 *dst,
u8 version, const char *query)
{
struct wpabuf *tlvs;
void *ret;
tlvs = wpabuf_alloc(2 + 1 + 1 + 1 + os_strlen(query));
if (tlvs == NULL)
return NULL;
wpabuf_put_le16(tlvs, 1 + 1 + 1 + os_strlen(query));
wpabuf_put_u8(tlvs, P2P_SERV_UPNP); /* Service Protocol Type */
wpabuf_put_u8(tlvs, 1); /* Service Transaction ID */
wpabuf_put_u8(tlvs, version);
wpabuf_put_str(tlvs, query);
ret = wpas_p2p_sd_request(wpa_s, dst, tlvs);
wpabuf_free(tlvs);
return ret;
}
int wpas_p2p_sd_cancel_request(struct wpa_supplicant *wpa_s, void *req)
{
if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_MGMT)
return wpa_drv_p2p_sd_cancel_request(wpa_s, (u64) req);
if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
return -1;
return p2p_sd_cancel_request(wpa_s->global->p2p, req);
}
void wpas_p2p_sd_response(struct wpa_supplicant *wpa_s, int freq,
const u8 *dst, u8 dialog_token,
const struct wpabuf *resp_tlvs)
{
if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_MGMT) {
wpa_drv_p2p_sd_response(wpa_s, freq, dst, dialog_token,
resp_tlvs);
return;
}
if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
return;
p2p_sd_response(wpa_s->global->p2p, freq, dst, dialog_token,
resp_tlvs);
}
void wpas_p2p_sd_service_update(struct wpa_supplicant *wpa_s)
{
if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_MGMT) {
wpa_drv_p2p_service_update(wpa_s);
return;
}
if (wpa_s->global->p2p)
p2p_sd_service_update(wpa_s->global->p2p);
}
static void wpas_p2p_srv_bonjour_free(struct p2p_srv_bonjour *bsrv)
{
dl_list_del(&bsrv->list);
wpabuf_free(bsrv->query);
wpabuf_free(bsrv->resp);
os_free(bsrv);
}
static void wpas_p2p_srv_upnp_free(struct p2p_srv_upnp *usrv)
{
dl_list_del(&usrv->list);
os_free(usrv->service);
os_free(usrv);
}
void wpas_p2p_service_flush(struct wpa_supplicant *wpa_s)
{
struct p2p_srv_bonjour *bsrv, *bn;
struct p2p_srv_upnp *usrv, *un;
dl_list_for_each_safe(bsrv, bn, &wpa_s->global->p2p_srv_bonjour,
struct p2p_srv_bonjour, list)
wpas_p2p_srv_bonjour_free(bsrv);
dl_list_for_each_safe(usrv, un, &wpa_s->global->p2p_srv_upnp,
struct p2p_srv_upnp, list)
wpas_p2p_srv_upnp_free(usrv);
wpas_p2p_sd_service_update(wpa_s);
}
int wpas_p2p_service_add_bonjour(struct wpa_supplicant *wpa_s,
struct wpabuf *query, struct wpabuf *resp)
{
struct p2p_srv_bonjour *bsrv;
bsrv = wpas_p2p_service_get_bonjour(wpa_s, query);
if (bsrv) {
wpabuf_free(query);
wpabuf_free(bsrv->resp);
bsrv->resp = resp;
return 0;
}
bsrv = os_zalloc(sizeof(*bsrv));
if (bsrv == NULL)
return -1;
bsrv->query = query;
bsrv->resp = resp;
dl_list_add(&wpa_s->global->p2p_srv_bonjour, &bsrv->list);
wpas_p2p_sd_service_update(wpa_s);
return 0;
}
int wpas_p2p_service_del_bonjour(struct wpa_supplicant *wpa_s,
const struct wpabuf *query)
{
struct p2p_srv_bonjour *bsrv;
bsrv = wpas_p2p_service_get_bonjour(wpa_s, query);
if (bsrv == NULL)
return -1;
wpas_p2p_srv_bonjour_free(bsrv);
wpas_p2p_sd_service_update(wpa_s);
return 0;
}
int wpas_p2p_service_add_upnp(struct wpa_supplicant *wpa_s, u8 version,
const char *service)
{
struct p2p_srv_upnp *usrv;
if (wpas_p2p_service_get_upnp(wpa_s, version, service))
return 0; /* Already listed */
usrv = os_zalloc(sizeof(*usrv));
if (usrv == NULL)
return -1;
usrv->version = version;
usrv->service = os_strdup(service);
if (usrv->service == NULL) {
os_free(usrv);
return -1;
}
dl_list_add(&wpa_s->global->p2p_srv_upnp, &usrv->list);
wpas_p2p_sd_service_update(wpa_s);
return 0;
}
int wpas_p2p_service_del_upnp(struct wpa_supplicant *wpa_s, u8 version,
const char *service)
{
struct p2p_srv_upnp *usrv;
usrv = wpas_p2p_service_get_upnp(wpa_s, version, service);
if (usrv == NULL)
return -1;
wpas_p2p_srv_upnp_free(usrv);
wpas_p2p_sd_service_update(wpa_s);
return 0;
}
static void wpas_prov_disc_local_display(struct wpa_supplicant *wpa_s,
const u8 *peer, const char *params,
unsigned int generated_pin)
{
wpa_msg(wpa_s, MSG_INFO, P2P_EVENT_PROV_DISC_SHOW_PIN MACSTR " %08d%s",
MAC2STR(peer), generated_pin, params);
}
static void wpas_prov_disc_local_keypad(struct wpa_supplicant *wpa_s,
const u8 *peer, const char *params)
{
wpa_msg(wpa_s, MSG_INFO, P2P_EVENT_PROV_DISC_ENTER_PIN MACSTR "%s",
MAC2STR(peer), params);
}
void wpas_prov_disc_req(void *ctx, const u8 *peer, u16 config_methods,
const u8 *dev_addr, const u8 *pri_dev_type,
const char *dev_name, u16 supp_config_methods,
u8 dev_capab, u8 group_capab)
{
struct wpa_supplicant *wpa_s = ctx;
char devtype[WPS_DEV_TYPE_BUFSIZE];
char params[200];
u8 empty_dev_type[8];
unsigned int generated_pin = 0;
if (pri_dev_type == NULL) {
os_memset(empty_dev_type, 0, sizeof(empty_dev_type));
pri_dev_type = empty_dev_type;
}
os_snprintf(params, sizeof(params), " p2p_dev_addr=" MACSTR
" pri_dev_type=%s name='%s' config_methods=0x%x "
"dev_capab=0x%x group_capab=0x%x",
MAC2STR(dev_addr),
wps_dev_type_bin2str(pri_dev_type, devtype,
sizeof(devtype)),
dev_name, supp_config_methods, dev_capab, group_capab);
params[sizeof(params) - 1] = '\0';
if (config_methods & WPS_CONFIG_DISPLAY) {
generated_pin = wps_generate_pin();
wpas_prov_disc_local_display(wpa_s, peer, params,
generated_pin);
} else if (config_methods & WPS_CONFIG_KEYPAD)
wpas_prov_disc_local_keypad(wpa_s, peer, params);
else if (config_methods & WPS_CONFIG_PUSHBUTTON)
wpa_msg(wpa_s, MSG_INFO, P2P_EVENT_PROV_DISC_PBC_REQ MACSTR
"%s", MAC2STR(peer), params);
wpas_notify_p2p_provision_discovery(wpa_s, peer, 1 /* request */,
P2P_PROV_DISC_SUCCESS,
config_methods, generated_pin);
}
void wpas_prov_disc_resp(void *ctx, const u8 *peer, u16 config_methods)
{
struct wpa_supplicant *wpa_s = ctx;
unsigned int generated_pin = 0;
if (config_methods & WPS_CONFIG_DISPLAY)
wpas_prov_disc_local_keypad(wpa_s, peer, "");
else if (config_methods & WPS_CONFIG_KEYPAD) {
generated_pin = wps_generate_pin();
wpas_prov_disc_local_display(wpa_s, peer, "", generated_pin);
} else if (config_methods & WPS_CONFIG_PUSHBUTTON)
wpa_msg(wpa_s, MSG_INFO, P2P_EVENT_PROV_DISC_PBC_RESP MACSTR,
MAC2STR(peer));
wpas_notify_p2p_provision_discovery(wpa_s, peer, 0 /* response */,
P2P_PROV_DISC_SUCCESS,
config_methods, generated_pin);
if (wpa_s->pending_pd_before_join &&
(os_memcmp(peer, wpa_s->pending_join_dev_addr, ETH_ALEN) == 0 ||
os_memcmp(peer, wpa_s->pending_join_iface_addr, ETH_ALEN) == 0)) {
wpa_s->pending_pd_before_join = 0;
wpa_printf(MSG_DEBUG, "P2P: Starting pending "
"join-existing-group operation");
wpas_p2p_join_start(wpa_s);
}
}
void wpas_prov_disc_fail(void *ctx, const u8 *peer,
enum p2p_prov_disc_status status)
{
struct wpa_supplicant *wpa_s = ctx;
wpas_notify_p2p_provision_discovery(wpa_s, peer, 0 /* response */,
status, 0, 0);
}
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)
{
struct wpa_supplicant *wpa_s = ctx;
struct wpa_ssid *s;
u8 cur_bssid[ETH_ALEN];
int res;
struct wpa_supplicant *grp;
if (!persistent_group) {
wpa_printf(MSG_DEBUG, "P2P: Invitation from " MACSTR
" to join an active group", MAC2STR(sa));
if (!is_zero_ether_addr(wpa_s->p2p_auth_invite) &&
(os_memcmp(go_dev_addr, wpa_s->p2p_auth_invite, ETH_ALEN)
== 0 ||
os_memcmp(sa, wpa_s->p2p_auth_invite, ETH_ALEN) == 0)) {
wpa_printf(MSG_DEBUG, "P2P: Accept previously "
"authorized invitation");
goto accept_inv;
}
/*
* Do not accept the invitation automatically; notify user and
* request approval.
*/
return P2P_SC_FAIL_INFO_CURRENTLY_UNAVAILABLE;
}
grp = wpas_get_p2p_group(wpa_s, ssid, ssid_len, go);
if (grp) {
wpa_printf(MSG_DEBUG, "P2P: Accept invitation to already "
"running persistent group");
if (*go)
os_memcpy(group_bssid, grp->own_addr, ETH_ALEN);
goto accept_inv;
}
if (!wpa_s->conf->persistent_reconnect)
return P2P_SC_FAIL_INFO_CURRENTLY_UNAVAILABLE;
for (s = wpa_s->conf->ssid; s; s = s->next) {
if (s->disabled == 2 &&
os_memcmp(s->bssid, go_dev_addr, ETH_ALEN) == 0 &&
s->ssid_len == ssid_len &&
os_memcmp(ssid, s->ssid, ssid_len) == 0)
break;
}
if (!s) {
wpa_printf(MSG_DEBUG, "P2P: Invitation from " MACSTR
" requested reinvocation of an unknown group",
MAC2STR(sa));
return P2P_SC_FAIL_UNKNOWN_GROUP;
}
if (s->mode == WPAS_MODE_P2P_GO && !wpas_p2p_create_iface(wpa_s)) {
*go = 1;
if (wpa_s->wpa_state >= WPA_AUTHENTICATING) {
wpa_printf(MSG_DEBUG, "P2P: The only available "
"interface is already in use - reject "
"invitation");
return P2P_SC_FAIL_UNABLE_TO_ACCOMMODATE;
}
os_memcpy(group_bssid, wpa_s->own_addr, ETH_ALEN);
} else if (s->mode == WPAS_MODE_P2P_GO) {
*go = 1;
if (wpas_p2p_add_group_interface(wpa_s, WPA_IF_P2P_GO) < 0)
{
wpa_printf(MSG_ERROR, "P2P: Failed to allocate a new "
"interface address for the group");
return P2P_SC_FAIL_UNABLE_TO_ACCOMMODATE;
}
os_memcpy(group_bssid, wpa_s->pending_interface_addr,
ETH_ALEN);
}
accept_inv:
if (wpa_s->current_ssid && wpa_drv_get_bssid(wpa_s, cur_bssid) == 0 &&
wpa_s->assoc_freq) {
wpa_printf(MSG_DEBUG, "P2P: Trying to force channel to match "
"the channel we are already using");
*force_freq = wpa_s->assoc_freq;
}
res = wpa_drv_shared_freq(wpa_s);
if (res > 0) {
wpa_printf(MSG_DEBUG, "P2P: Trying to force channel to match "
"with the channel we are already using on a "
"shared interface");
*force_freq = res;
}
return P2P_SC_SUCCESS;
}
static void wpas_invitation_received(void *ctx, const u8 *sa, const u8 *bssid,
const u8 *ssid, size_t ssid_len,
const u8 *go_dev_addr, u8 status,
int op_freq)
{
struct wpa_supplicant *wpa_s = ctx;
struct wpa_ssid *s;
for (s = wpa_s->conf->ssid; s; s = s->next) {
if (s->disabled == 2 &&
s->ssid_len == ssid_len &&
os_memcmp(ssid, s->ssid, ssid_len) == 0)
break;
}
if (status == P2P_SC_SUCCESS) {
wpa_printf(MSG_DEBUG, "P2P: Invitation from peer " MACSTR
" was accepted; op_freq=%d MHz",
MAC2STR(sa), op_freq);
if (s) {
wpas_p2p_group_add_persistent(
wpa_s, s, s->mode == WPAS_MODE_P2P_GO, 0);
} else if (bssid) {
wpas_p2p_join(wpa_s, bssid, go_dev_addr,
wpa_s->p2p_wps_method);
}
return;
}
if (status != P2P_SC_FAIL_INFO_CURRENTLY_UNAVAILABLE) {
wpa_printf(MSG_DEBUG, "P2P: Invitation from peer " MACSTR
" was rejected (status %u)", MAC2STR(sa), status);
return;
}
if (!s) {
if (bssid) {
wpa_msg(wpa_s, MSG_INFO, P2P_EVENT_INVITATION_RECEIVED
"sa=" MACSTR " go_dev_addr=" MACSTR
" bssid=" MACSTR " unknown-network",
MAC2STR(sa), MAC2STR(go_dev_addr),
MAC2STR(bssid));
} else {
wpa_msg(wpa_s, MSG_INFO, P2P_EVENT_INVITATION_RECEIVED
"sa=" MACSTR " go_dev_addr=" MACSTR
" unknown-network",
MAC2STR(sa), MAC2STR(go_dev_addr));
}
return;
}
wpa_msg(wpa_s, MSG_INFO, P2P_EVENT_INVITATION_RECEIVED "sa=" MACSTR
" persistent=%d", MAC2STR(sa), s->id);
}
static void wpas_invitation_result(void *ctx, int status, const u8 *bssid)
{
struct wpa_supplicant *wpa_s = ctx;
struct wpa_ssid *ssid;
if (bssid) {
wpa_msg(wpa_s, MSG_INFO, P2P_EVENT_INVITATION_RESULT
"status=%d " MACSTR,
status, MAC2STR(bssid));
} else {
wpa_msg(wpa_s, MSG_INFO, P2P_EVENT_INVITATION_RESULT
"status=%d ", status);
}
wpas_notify_p2p_invitation_result(wpa_s, status, bssid);
if (wpa_s->pending_invite_ssid_id == -1)
return; /* Invitation to active group */
if (status != P2P_SC_SUCCESS) {
wpas_p2p_remove_pending_group_interface(wpa_s);
return;
}
ssid = wpa_config_get_network(wpa_s->conf,
wpa_s->pending_invite_ssid_id);
if (ssid == NULL) {
wpa_printf(MSG_ERROR, "P2P: Could not find persistent group "
"data matching with invitation");
return;
}
wpas_p2p_group_add_persistent(wpa_s, ssid,
ssid->mode == WPAS_MODE_P2P_GO, 0);
}
static int wpas_p2p_default_channels(struct wpa_supplicant *wpa_s,
struct p2p_channels *chan)
{
int i, cla = 0;
wpa_printf(MSG_DEBUG, "P2P: Enable operating classes for 2.4 GHz "
"band");
/* Operating class 81 - 2.4 GHz band channels 1..13 */
chan->reg_class[cla].reg_class = 81;
chan->reg_class[cla].channels = 11;
for (i = 0; i < 11; i++)
chan->reg_class[cla].channel[i] = i + 1;
cla++;
wpa_printf(MSG_DEBUG, "P2P: Enable operating classes for lower 5 GHz "
"band");
/* Operating class 115 - 5 GHz, channels 36-48 */
chan->reg_class[cla].reg_class = 115;
chan->reg_class[cla].channels = 4;
chan->reg_class[cla].channel[0] = 36;
chan->reg_class[cla].channel[1] = 40;
chan->reg_class[cla].channel[2] = 44;
chan->reg_class[cla].channel[3] = 48;
cla++;
wpa_printf(MSG_DEBUG, "P2P: Enable operating classes for higher 5 GHz "
"band");
/* Operating class 124 - 5 GHz, channels 149,153,157,161 */
chan->reg_class[cla].reg_class = 124;
chan->reg_class[cla].channels = 4;
chan->reg_class[cla].channel[0] = 149;
chan->reg_class[cla].channel[1] = 153;
chan->reg_class[cla].channel[2] = 157;
chan->reg_class[cla].channel[3] = 161;
cla++;
chan->reg_classes = cla;
return 0;
}
static struct hostapd_hw_modes * get_mode(struct hostapd_hw_modes *modes,
u16 num_modes,
enum hostapd_hw_mode mode)
{
u16 i;
for (i = 0; i < num_modes; i++) {
if (modes[i].mode == mode)
return &modes[i];
}
return NULL;
}
static int has_channel(struct hostapd_hw_modes *mode, u8 chan, int *flags)
{
int i;
for (i = 0; i < mode->num_channels; i++) {
if (mode->channels[i].chan == chan) {
if (flags)
*flags = mode->channels[i].flag;
return !(mode->channels[i].flag &
(HOSTAPD_CHAN_DISABLED |
HOSTAPD_CHAN_PASSIVE_SCAN |
HOSTAPD_CHAN_NO_IBSS |
HOSTAPD_CHAN_RADAR));
}
}
return 0;
}
struct p2p_oper_class_map {
enum hostapd_hw_mode mode;
u8 op_class;
u8 min_chan;
u8 max_chan;
u8 inc;
enum { BW20, BW40PLUS, BW40MINUS } bw;
};
static int wpas_p2p_setup_channels(struct wpa_supplicant *wpa_s,
struct p2p_channels *chan)
{
struct hostapd_hw_modes *modes, *mode;
u16 num_modes, flags;
int cla, op;
struct p2p_oper_class_map op_class[] = {
{ HOSTAPD_MODE_IEEE80211G, 81, 1, 13, 1, BW20 },
{ HOSTAPD_MODE_IEEE80211G, 82, 14, 14, 1, BW20 },
#if 0 /* Do not enable HT40 on 2 GHz for now */
{ HOSTAPD_MODE_IEEE80211G, 83, 1, 9, 1, BW40PLUS },
{ HOSTAPD_MODE_IEEE80211G, 84, 5, 13, 1, BW40MINUS },
#endif
{ HOSTAPD_MODE_IEEE80211A, 115, 36, 48, 4, BW20 },
{ HOSTAPD_MODE_IEEE80211A, 124, 149, 161, 4, BW20 },
{ HOSTAPD_MODE_IEEE80211A, 116, 36, 44, 8, BW40PLUS },
{ HOSTAPD_MODE_IEEE80211A, 117, 40, 48, 8, BW40MINUS },
{ HOSTAPD_MODE_IEEE80211A, 126, 149, 157, 8, BW40PLUS },
{ HOSTAPD_MODE_IEEE80211A, 127, 153, 161, 8, BW40MINUS },
{ -1, 0, 0, 0, 0, BW20 }
};
modes = wpa_drv_get_hw_feature_data(wpa_s, &num_modes, &flags);
if (modes == NULL) {
wpa_printf(MSG_DEBUG, "P2P: Driver did not support fetching "
"of all supported channels; assume dualband "
"support");
return wpas_p2p_default_channels(wpa_s, chan);
}
cla = 0;
for (op = 0; op_class[op].op_class; op++) {
struct p2p_oper_class_map *o = &op_class[op];
u8 ch;
struct p2p_reg_class *reg = NULL;
mode = get_mode(modes, num_modes, o->mode);
if (mode == NULL)
continue;
for (ch = o->min_chan; ch <= o->max_chan; ch += o->inc) {
int flag;
if (!has_channel(mode, ch, &flag))
continue;
if (o->bw == BW40MINUS &&
(!(flag & HOSTAPD_CHAN_HT40MINUS) ||
!has_channel(mode, ch - 4, NULL)))
continue;
if (o->bw == BW40PLUS &&
(!(flag & HOSTAPD_CHAN_HT40PLUS) ||
!has_channel(mode, ch + 4, NULL)))
continue;
if (reg == NULL) {
wpa_printf(MSG_DEBUG, "P2P: Add operating "
"class %u", o->op_class);
reg = &chan->reg_class[cla];
cla++;
reg->reg_class = o->op_class;
}
reg->channel[reg->channels] = ch;
reg->channels++;
}
if (reg) {
wpa_hexdump(MSG_DEBUG, "P2P: Channels",
reg->channel, reg->channels);
}
}
chan->reg_classes = cla;
ieee80211_sta_free_hw_features(modes, num_modes);
return 0;
}
static int wpas_get_noa(void *ctx, const u8 *interface_addr, u8 *buf,
size_t buf_len)
{
struct wpa_supplicant *wpa_s = ctx;
for (wpa_s = wpa_s->global->ifaces; wpa_s; wpa_s = wpa_s->next) {
if (os_memcmp(wpa_s->own_addr, interface_addr, ETH_ALEN) == 0)
break;
}
if (wpa_s == NULL)
return -1;
return wpa_drv_get_noa(wpa_s, buf, buf_len);
}
/**
* wpas_p2p_init - Initialize P2P module for %wpa_supplicant
* @global: Pointer to global data from wpa_supplicant_init()
* @wpa_s: Pointer to wpa_supplicant data from wpa_supplicant_add_iface()
* Returns: 0 on success, -1 on failure
*/
int wpas_p2p_init(struct wpa_global *global, struct wpa_supplicant *wpa_s)
{
struct p2p_config p2p;
unsigned int r;
int i;
if (!(wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_CAPABLE))
return 0;
#ifdef CONFIG_CLIENT_MLME
if (!(wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_MGMT)) {
wpa_s->mlme.public_action_cb = p2p_rx_action_mlme;
wpa_s->mlme.public_action_cb_ctx = wpa_s;
}
#endif /* CONFIG_CLIENT_MLME */
if (wpa_drv_disable_11b_rates(wpa_s, 1) < 0) {
wpa_printf(MSG_DEBUG, "P2P: Failed to disable 11b rates");
/* Continue anyway; this is not really a fatal error */
}
if (global->p2p)
return 0;
if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_MGMT) {
struct p2p_params params;
wpa_printf(MSG_DEBUG, "P2P: Use driver-based P2P management");
os_memset(&params, 0, sizeof(params));
params.dev_name = wpa_s->conf->device_name;
os_memcpy(params.pri_dev_type, wpa_s->conf->device_type,
WPS_DEV_TYPE_LEN);
params.num_sec_dev_types = wpa_s->conf->num_sec_device_types;
os_memcpy(params.sec_dev_type,
wpa_s->conf->sec_device_type,
params.num_sec_dev_types * WPS_DEV_TYPE_LEN);
if (wpa_drv_p2p_set_params(wpa_s, &params) < 0)
return -1;
return 0;
}
os_memset(&p2p, 0, sizeof(p2p));
p2p.msg_ctx = wpa_s;
p2p.cb_ctx = wpa_s;
p2p.p2p_scan = wpas_p2p_scan;
p2p.send_action = wpas_send_action;
p2p.send_action_done = wpas_send_action_done;
p2p.go_neg_completed = wpas_go_neg_completed;
p2p.go_neg_req_rx = wpas_go_neg_req_rx;
p2p.dev_found = wpas_dev_found;
p2p.dev_lost = wpas_dev_lost;
p2p.start_listen = wpas_start_listen;
p2p.stop_listen = wpas_stop_listen;
p2p.send_probe_resp = wpas_send_probe_resp;
p2p.sd_request = wpas_sd_request;
p2p.sd_response = wpas_sd_response;
p2p.prov_disc_req = wpas_prov_disc_req;
p2p.prov_disc_resp = wpas_prov_disc_resp;
p2p.prov_disc_fail = wpas_prov_disc_fail;
p2p.invitation_process = wpas_invitation_process;
p2p.invitation_received = wpas_invitation_received;
p2p.invitation_result = wpas_invitation_result;
p2p.get_noa = wpas_get_noa;
os_memcpy(wpa_s->global->p2p_dev_addr, wpa_s->own_addr, ETH_ALEN);
os_memcpy(p2p.dev_addr, wpa_s->own_addr, ETH_ALEN);
p2p.dev_name = wpa_s->conf->device_name;
p2p.manufacturer = wpa_s->conf->manufacturer;
p2p.model_name = wpa_s->conf->model_name;
p2p.model_number = wpa_s->conf->model_number;
p2p.serial_number = wpa_s->conf->serial_number;
if (wpa_s->wps) {
os_memcpy(p2p.uuid, wpa_s->wps->uuid, 16);
p2p.config_methods = wpa_s->wps->config_methods;
}
if (wpa_s->conf->p2p_listen_reg_class &&
wpa_s->conf->p2p_listen_channel) {
p2p.reg_class = wpa_s->conf->p2p_listen_reg_class;
p2p.channel = wpa_s->conf->p2p_listen_channel;
} else {
p2p.reg_class = 81;
/*
* Pick one of the social channels randomly as the listen
* channel.
*/
os_get_random((u8 *) &r, sizeof(r));
p2p.channel = 1 + (r % 3) * 5;
}
wpa_printf(MSG_DEBUG, "P2P: Own listen channel: %d", p2p.channel);
if (wpa_s->conf->p2p_oper_reg_class &&
wpa_s->conf->p2p_oper_channel) {
p2p.op_reg_class = wpa_s->conf->p2p_oper_reg_class;
p2p.op_channel = wpa_s->conf->p2p_oper_channel;
p2p.cfg_op_channel = 1;
wpa_printf(MSG_DEBUG, "P2P: Configured operating channel: "
"%d:%d", p2p.op_reg_class, p2p.op_channel);
} else {
p2p.op_reg_class = 81;
/*
* Use random operation channel from (1, 6, 11) if no other
* preference is indicated.
*/
os_get_random((u8 *) &r, sizeof(r));
p2p.op_channel = 1 + (r % 3) * 5;
p2p.cfg_op_channel = 0;
wpa_printf(MSG_DEBUG, "P2P: Random operating channel: "
"%d:%d", p2p.op_reg_class, p2p.op_channel);
}
if (wpa_s->conf->country[0] && wpa_s->conf->country[1]) {
os_memcpy(p2p.country, wpa_s->conf->country, 2);
p2p.country[2] = 0x04;
} else
os_memcpy(p2p.country, "XX\x04", 3);
if (wpas_p2p_setup_channels(wpa_s, &p2p.channels)) {
wpa_printf(MSG_ERROR, "P2P: Failed to configure supported "
"channel list");
return -1;
}
os_memcpy(p2p.pri_dev_type, wpa_s->conf->device_type,
WPS_DEV_TYPE_LEN);
p2p.num_sec_dev_types = wpa_s->conf->num_sec_device_types;
os_memcpy(p2p.sec_dev_type, wpa_s->conf->sec_device_type,
p2p.num_sec_dev_types * WPS_DEV_TYPE_LEN);
p2p.concurrent_operations = !!(wpa_s->drv_flags &
WPA_DRIVER_FLAGS_P2P_CONCURRENT);
p2p.max_peers = 100;
if (wpa_s->conf->p2p_ssid_postfix) {
p2p.ssid_postfix_len =
os_strlen(wpa_s->conf->p2p_ssid_postfix);
if (p2p.ssid_postfix_len > sizeof(p2p.ssid_postfix))
p2p.ssid_postfix_len = sizeof(p2p.ssid_postfix);
os_memcpy(p2p.ssid_postfix, wpa_s->conf->p2p_ssid_postfix,
p2p.ssid_postfix_len);
}
p2p.p2p_intra_bss = wpa_s->conf->p2p_intra_bss;
global->p2p = p2p_init(&p2p);
if (global->p2p == NULL)
return -1;
for (i = 0; i < MAX_WPS_VENDOR_EXT; i++) {
if (wpa_s->conf->wps_vendor_ext[i] == NULL)
continue;
p2p_add_wps_vendor_extension(
global->p2p, wpa_s->conf->wps_vendor_ext[i]);
}
return 0;
}
/**
* wpas_p2p_deinit - Deinitialize per-interface P2P data
* @wpa_s: Pointer to wpa_supplicant data from wpa_supplicant_add_iface()
*
* This function deinitialize per-interface P2P data.
*/
void wpas_p2p_deinit(struct wpa_supplicant *wpa_s)
{
if (wpa_s->driver && wpa_s->drv_priv)
wpa_drv_probe_req_report(wpa_s, 0);
os_free(wpa_s->go_params);
wpa_s->go_params = NULL;
wpabuf_free(wpa_s->pending_action_tx);
wpa_s->pending_action_tx = NULL;
eloop_cancel_timeout(wpas_send_action_cb, wpa_s, NULL);
eloop_cancel_timeout(wpas_p2p_group_formation_timeout, wpa_s, NULL);
eloop_cancel_timeout(wpas_p2p_join_scan, wpa_s, NULL);
wpa_s->p2p_long_listen = 0;
eloop_cancel_timeout(wpas_p2p_long_listen_timeout, wpa_s, NULL);
eloop_cancel_timeout(wpas_p2p_group_idle_timeout, wpa_s, NULL);
wpas_p2p_remove_pending_group_interface(wpa_s);
/* TODO: remove group interface from the driver if this wpa_s instance
* is on top of a P2P group interface */
}
/**
* wpas_p2p_deinit_global - Deinitialize global P2P module
* @global: Pointer to global data from wpa_supplicant_init()
*
* This function deinitializes the global (per device) P2P module.
*/
void wpas_p2p_deinit_global(struct wpa_global *global)
{
struct wpa_supplicant *wpa_s, *tmp;
char *ifname;
if (global->p2p == NULL)
return;
/* Remove remaining P2P group interfaces */
wpa_s = global->ifaces;
if (wpa_s)
wpas_p2p_service_flush(wpa_s);
while (wpa_s && wpa_s->p2p_group_interface != NOT_P2P_GROUP_INTERFACE)
wpa_s = wpa_s->next;
while (wpa_s) {
enum wpa_driver_if_type type;
tmp = global->ifaces;
while (tmp &&
(tmp == wpa_s ||
tmp->p2p_group_interface == NOT_P2P_GROUP_INTERFACE)) {
tmp = tmp->next;
}
if (tmp == NULL)
break;
ifname = os_strdup(tmp->ifname);
type = wpas_p2p_if_type(tmp->p2p_group_interface);
wpa_supplicant_remove_iface(global, tmp);
if (ifname)
wpa_drv_if_remove(wpa_s, type, ifname);
os_free(ifname);
}
/*
* Deinit GO data on any possibly remaining interface (if main
* interface is used as GO).
*/
for (wpa_s = global->ifaces; wpa_s; wpa_s = wpa_s->next) {
if (wpa_s->ap_iface)
wpas_p2p_group_deinit(wpa_s);
}
p2p_deinit(global->p2p);
global->p2p = NULL;
}
static int wpas_p2p_create_iface(struct wpa_supplicant *wpa_s)
{
if (wpa_s->drv_flags &
(WPA_DRIVER_FLAGS_P2P_DEDICATED_INTERFACE |
WPA_DRIVER_FLAGS_P2P_MGMT_AND_NON_P2P))
return 1; /* P2P group requires a new interface in every case
*/
if (!(wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_CONCURRENT))
return 0; /* driver does not support concurrent operations */
if (wpa_s->global->ifaces->next)
return 1; /* more that one interface already in use */
if (wpa_s->wpa_state >= WPA_AUTHENTICATING)
return 1; /* this interface is already in use */
return 0;
}
static int wpas_p2p_start_go_neg(struct wpa_supplicant *wpa_s,
const u8 *peer_addr,
enum p2p_wps_method wps_method,
int go_intent, const u8 *own_interface_addr,
unsigned int force_freq, int persistent_group)
{
if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_MGMT) {
return wpa_drv_p2p_connect(wpa_s, peer_addr, wps_method,
go_intent, own_interface_addr,
force_freq, persistent_group);
}
return p2p_connect(wpa_s->global->p2p, peer_addr, wps_method,
go_intent, own_interface_addr, force_freq,
persistent_group);
}
static int wpas_p2p_auth_go_neg(struct wpa_supplicant *wpa_s,
const u8 *peer_addr,
enum p2p_wps_method wps_method,
int go_intent, const u8 *own_interface_addr,
unsigned int force_freq, int persistent_group)
{
if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_MGMT)
return -1;
return p2p_authorize(wpa_s->global->p2p, peer_addr, wps_method,
go_intent, own_interface_addr, force_freq,
persistent_group);
}
static void wpas_p2p_check_join_scan_limit(struct wpa_supplicant *wpa_s)
{
wpa_s->p2p_join_scan_count++;
wpa_printf(MSG_DEBUG, "P2P: Join scan attempt %d",
wpa_s->p2p_join_scan_count);
if (wpa_s->p2p_join_scan_count > P2P_MAX_JOIN_SCAN_ATTEMPTS) {
wpa_printf(MSG_DEBUG, "P2P: Failed to find GO " MACSTR
" for join operationg - stop join attempt",
MAC2STR(wpa_s->pending_join_iface_addr));
eloop_cancel_timeout(wpas_p2p_join_scan, wpa_s, NULL);
wpa_msg(wpa_s->parent, MSG_INFO,
P2P_EVENT_GROUP_FORMATION_FAILURE);
}
}
static void wpas_p2p_scan_res_join(struct wpa_supplicant *wpa_s,
struct wpa_scan_results *scan_res)
{
struct wpa_bss *bss;
int freq;
u8 iface_addr[ETH_ALEN];
eloop_cancel_timeout(wpas_p2p_join_scan, wpa_s, NULL);
if (wpa_s->global->p2p_disabled)
return;
wpa_printf(MSG_DEBUG, "P2P: Scan results received (%d BSS) for join",
scan_res ? (int) scan_res->num : -1);
if (scan_res)
wpas_p2p_scan_res_handler(wpa_s, scan_res);
freq = p2p_get_oper_freq(wpa_s->global->p2p,
wpa_s->pending_join_iface_addr);
if (freq < 0 &&
p2p_get_interface_addr(wpa_s->global->p2p,
wpa_s->pending_join_dev_addr,
iface_addr) == 0 &&
os_memcmp(iface_addr, wpa_s->pending_join_dev_addr, ETH_ALEN) != 0)
{
wpa_printf(MSG_DEBUG, "P2P: Overwrite pending interface "
"address for join from " MACSTR " to " MACSTR
" based on newly discovered P2P peer entry",
MAC2STR(wpa_s->pending_join_iface_addr),
MAC2STR(iface_addr));
os_memcpy(wpa_s->pending_join_iface_addr, iface_addr,
ETH_ALEN);
freq = p2p_get_oper_freq(wpa_s->global->p2p,
wpa_s->pending_join_iface_addr);
}
if (freq >= 0) {
wpa_printf(MSG_DEBUG, "P2P: Target GO operating frequency "
"from P2P peer table: %d MHz", freq);
}
bss = wpa_bss_get_bssid(wpa_s, wpa_s->pending_join_iface_addr);
if (bss) {
freq = bss->freq;
wpa_printf(MSG_DEBUG, "P2P: Target GO operating frequency "
"from BSS table: %d MHz", freq);
}
if (freq > 0) {
u16 method;
wpa_printf(MSG_DEBUG, "P2P: Send Provision Discovery Request "
"prior to joining an existing group (GO " MACSTR
" freq=%u MHz)",
MAC2STR(wpa_s->pending_join_dev_addr), freq);
wpa_s->pending_pd_before_join = 1;
switch (wpa_s->pending_join_wps_method) {
case WPS_PIN_DISPLAY:
method = WPS_CONFIG_KEYPAD;
break;
case WPS_PIN_KEYPAD:
method = WPS_CONFIG_DISPLAY;
break;
case WPS_PBC:
method = WPS_CONFIG_PUSHBUTTON;
break;
default:
method = 0;
break;
}
if (p2p_prov_disc_req(wpa_s->global->p2p,
wpa_s->pending_join_dev_addr, method, 1)
< 0) {
wpa_printf(MSG_DEBUG, "P2P: Failed to send Provision "
"Discovery Request before joining an "
"existing group");
wpa_s->pending_pd_before_join = 0;
goto start;
}
/*
* Actual join operation will be started from the Action frame
* TX status callback.
*/
return;
}
wpa_printf(MSG_DEBUG, "P2P: Failed to find BSS/GO - try again later");
eloop_cancel_timeout(wpas_p2p_join_scan, wpa_s, NULL);
eloop_register_timeout(1, 0, wpas_p2p_join_scan, wpa_s, NULL);
wpas_p2p_check_join_scan_limit(wpa_s);
return;
start:
/* Start join operation immediately */
wpas_p2p_join_start(wpa_s);
}
static void wpas_p2p_join_scan(void *eloop_ctx, void *timeout_ctx)
{
struct wpa_supplicant *wpa_s = eloop_ctx;
int ret;
struct wpa_driver_scan_params params;
struct wpabuf *wps_ie, *ies;
os_memset(&params, 0, sizeof(params));
/* P2P Wildcard SSID */
params.num_ssids = 1;
params.ssids[0].ssid = (u8 *) P2P_WILDCARD_SSID;
params.ssids[0].ssid_len = P2P_WILDCARD_SSID_LEN;
wpa_s->wps->dev.p2p = 1;
wps_ie = wps_build_probe_req_ie(0, &wpa_s->wps->dev, wpa_s->wps->uuid,
WPS_REQ_ENROLLEE, 0, NULL);
if (wps_ie == NULL) {
wpas_p2p_scan_res_join(wpa_s, NULL);
return;
}
ies = wpabuf_alloc(wpabuf_len(wps_ie) + 100);
if (ies == NULL) {
wpabuf_free(wps_ie);
wpas_p2p_scan_res_join(wpa_s, NULL);
return;
}
wpabuf_put_buf(ies, wps_ie);
wpabuf_free(wps_ie);
p2p_scan_ie(wpa_s->global->p2p, ies);
params.p2p_probe = 1;
params.extra_ies = wpabuf_head(ies);
params.extra_ies_len = wpabuf_len(ies);
/*
* Run a scan to update BSS table and start Provision Discovery once
* the new scan results become available.
*/
wpa_s->scan_res_handler = wpas_p2p_scan_res_join;
if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_USER_SPACE_MLME)
ret = ieee80211_sta_req_scan(wpa_s, &params);
else
ret = wpa_drv_scan(wpa_s, &params);
wpabuf_free(ies);
if (ret) {
wpa_printf(MSG_DEBUG, "P2P: Failed to start scan for join - "
"try again later");
eloop_cancel_timeout(wpas_p2p_join_scan, wpa_s, NULL);
eloop_register_timeout(1, 0, wpas_p2p_join_scan, wpa_s, NULL);
wpas_p2p_check_join_scan_limit(wpa_s);
}
}
static int wpas_p2p_join(struct wpa_supplicant *wpa_s, const u8 *iface_addr,
const u8 *dev_addr, enum p2p_wps_method wps_method)
{
wpa_printf(MSG_DEBUG, "P2P: Request to join existing group (iface "
MACSTR " dev " MACSTR ")",
MAC2STR(iface_addr), MAC2STR(dev_addr));
os_memcpy(wpa_s->pending_join_iface_addr, iface_addr, ETH_ALEN);
os_memcpy(wpa_s->pending_join_dev_addr, dev_addr, ETH_ALEN);
wpa_s->pending_join_wps_method = wps_method;
/* Make sure we are not running find during connection establishment */
wpas_p2p_stop_find(wpa_s);
wpa_s->p2p_join_scan_count = 0;
wpas_p2p_join_scan(wpa_s, NULL);
return 0;
}
static int wpas_p2p_join_start(struct wpa_supplicant *wpa_s)
{
struct wpa_supplicant *group;
struct p2p_go_neg_results res;
group = wpas_p2p_get_group_iface(wpa_s, 0, 0);
if (group == NULL)
return -1;
if (group != wpa_s) {
os_memcpy(group->p2p_pin, wpa_s->p2p_pin,
sizeof(group->p2p_pin));
group->p2p_wps_method = wpa_s->p2p_wps_method;
}
group->p2p_in_provisioning = 1;
os_memset(&res, 0, sizeof(res));
os_memcpy(res.peer_interface_addr, wpa_s->pending_join_iface_addr,
ETH_ALEN);
res.wps_method = wpa_s->pending_join_wps_method;
wpas_start_wps_enrollee(group, &res);
/*
* Allow a longer timeout for join-a-running-group than normal 15
* second group formation timeout since the GO may not have authorized
* our connection yet.
*/
eloop_cancel_timeout(wpas_p2p_group_formation_timeout, wpa_s, NULL);
eloop_register_timeout(60, 0, wpas_p2p_group_formation_timeout,
wpa_s, NULL);
return 0;
}
/**
* wpas_p2p_connect - Request P2P Group Formation to be started
* @wpa_s: Pointer to wpa_supplicant data from wpa_supplicant_add_iface()
* @peer_addr: Address of the peer P2P Device
* @pin: PIN to use during provisioning or %NULL to indicate PBC mode
* @persistent_group: Whether to create a persistent group
* @join: Whether to join an existing group (as a client) instead of starting
* Group Owner negotiation; @peer_addr is BSSID in that case
* @auth: Whether to only authorize the connection instead of doing that and
* initiating Group Owner negotiation
* @go_intent: GO Intent or -1 to use default
* @freq: Frequency for the group or 0 for auto-selection
* Returns: 0 or new PIN (if pin was %NULL) on success, -1 on unspecified
* failure, -2 on failure due to channel not currently available,
* -3 if forced channel is not supported
*/
int wpas_p2p_connect(struct wpa_supplicant *wpa_s, const u8 *peer_addr,
const char *pin, enum p2p_wps_method wps_method,
int persistent_group, int join, int auth, int go_intent,
int freq)
{
int force_freq = 0, oper_freq = 0;
u8 bssid[ETH_ALEN];
int ret = 0;
enum wpa_driver_if_type iftype;
if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
return -1;
if (go_intent < 0)
go_intent = wpa_s->conf->p2p_go_intent;
if (!auth)
wpa_s->p2p_long_listen = 0;
wpa_s->p2p_wps_method = wps_method;
if (pin)
os_strlcpy(wpa_s->p2p_pin, pin, sizeof(wpa_s->p2p_pin));
else if (wps_method == WPS_PIN_DISPLAY) {
ret = wps_generate_pin();
os_snprintf(wpa_s->p2p_pin, sizeof(wpa_s->p2p_pin), "%08d",
ret);
wpa_printf(MSG_DEBUG, "P2P: Randomly generated PIN: %s",
wpa_s->p2p_pin);
} else
wpa_s->p2p_pin[0] = '\0';
if (join) {
u8 iface_addr[ETH_ALEN], dev_addr[ETH_ALEN];
if (auth) {
wpa_printf(MSG_DEBUG, "P2P: Authorize invitation to "
"connect a running group from " MACSTR,
MAC2STR(peer_addr));
os_memcpy(wpa_s->p2p_auth_invite, peer_addr, ETH_ALEN);
return ret;
}
os_memcpy(dev_addr, peer_addr, ETH_ALEN);
if (p2p_get_interface_addr(wpa_s->global->p2p, peer_addr,
iface_addr) < 0) {
os_memcpy(iface_addr, peer_addr, ETH_ALEN);
p2p_get_dev_addr(wpa_s->global->p2p, peer_addr,
dev_addr);
}
if (wpas_p2p_join(wpa_s, iface_addr, dev_addr, wps_method) <
0)
return -1;
return ret;
}
if (wpa_s->current_ssid && wpa_drv_get_bssid(wpa_s, bssid) == 0 &&
wpa_s->assoc_freq)
oper_freq = wpa_s->assoc_freq;
else {
oper_freq = wpa_drv_shared_freq(wpa_s);
if (oper_freq < 0)
oper_freq = 0;
}
if (freq > 0) {
if (!p2p_supported_freq(wpa_s->global->p2p, freq)) {
wpa_printf(MSG_DEBUG, "P2P: The forced channel "
"(%u MHz) is not supported for P2P uses",
freq);
return -3;
}
if (oper_freq > 0 && freq != oper_freq &&
!(wpa_s->drv_flags &
WPA_DRIVER_FLAGS_MULTI_CHANNEL_CONCURRENT)) {
wpa_printf(MSG_DEBUG, "P2P: Cannot start P2P group "
"on %u MHz while connected on another "
"channel (%u MHz)", freq, oper_freq);
return -2;
}
wpa_printf(MSG_DEBUG, "P2P: Trying to force us to use the "
"requested channel (%u MHz)", freq);
force_freq = freq;
} else if (oper_freq > 0 &&
!p2p_supported_freq(wpa_s->global->p2p, oper_freq)) {
if (!(wpa_s->drv_flags &
WPA_DRIVER_FLAGS_MULTI_CHANNEL_CONCURRENT)) {
wpa_printf(MSG_DEBUG, "P2P: Cannot start P2P group "
"while connected on non-P2P supported "
"channel (%u MHz)", oper_freq);
return -2;
}
wpa_printf(MSG_DEBUG, "P2P: Current operating channel "
"(%u MHz) not available for P2P - try to use "
"another channel", oper_freq);
force_freq = 0;
} else if (oper_freq > 0) {
wpa_printf(MSG_DEBUG, "P2P: Trying to force us to use the "
"channel we are already using (%u MHz) on another "
"interface", oper_freq);
force_freq = oper_freq;
}
wpa_s->create_p2p_iface = wpas_p2p_create_iface(wpa_s);
if (!wpa_s->create_p2p_iface) {
if (auth) {
if (wpas_p2p_auth_go_neg(wpa_s, peer_addr, wps_method,
go_intent, wpa_s->own_addr,
force_freq, persistent_group)
< 0)
return -1;
return ret;
}
if (wpas_p2p_start_go_neg(wpa_s, peer_addr, wps_method,
go_intent, wpa_s->own_addr,
force_freq, persistent_group) < 0)
return -1;
return ret;
}
/* Prepare to add a new interface for the group */
iftype = WPA_IF_P2P_GROUP;
if (go_intent == 15)
iftype = WPA_IF_P2P_GO;
if (wpas_p2p_add_group_interface(wpa_s, iftype) < 0) {
wpa_printf(MSG_ERROR, "P2P: Failed to allocate a new "
"interface for the group");
return -1;
}
if (auth) {
if (wpas_p2p_auth_go_neg(wpa_s, peer_addr, wps_method,
go_intent,
wpa_s->pending_interface_addr,
force_freq, persistent_group) < 0)
return -1;
return ret;
}
if (wpas_p2p_start_go_neg(wpa_s, peer_addr, wps_method, go_intent,
wpa_s->pending_interface_addr,
force_freq, persistent_group) < 0) {
wpas_p2p_remove_pending_group_interface(wpa_s);
return -1;
}
return ret;
}
/**
* wpas_p2p_remain_on_channel_cb - Indication of remain-on-channel start
* @wpa_s: Pointer to wpa_supplicant data from wpa_supplicant_add_iface()
* @freq: Frequency of the channel in MHz
* @duration: Duration of the stay on the channel in milliseconds
*
* This callback is called when the driver indicates that it has started the
* requested remain-on-channel duration.
*/
void wpas_p2p_remain_on_channel_cb(struct wpa_supplicant *wpa_s,
unsigned int freq, unsigned int duration)
{
if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
return;
wpa_s->roc_waiting_drv_freq = 0;
wpa_s->off_channel_freq = freq;
wpas_send_action_cb(wpa_s, NULL);
if (wpa_s->off_channel_freq == wpa_s->pending_listen_freq) {
p2p_listen_cb(wpa_s->global->p2p, wpa_s->pending_listen_freq,
wpa_s->pending_listen_duration);
wpa_s->pending_listen_freq = 0;
}
}
static int wpas_p2p_listen_start(struct wpa_supplicant *wpa_s,
unsigned int timeout)
{
/* Limit maximum Listen state time based on driver limitation. */
if (timeout > wpa_s->max_remain_on_chan)
timeout = wpa_s->max_remain_on_chan;
if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_MGMT)
return wpa_drv_p2p_listen(wpa_s, timeout);
return p2p_listen(wpa_s->global->p2p, timeout);
}
/**
* wpas_p2p_cancel_remain_on_channel_cb - Remain-on-channel timeout
* @wpa_s: Pointer to wpa_supplicant data from wpa_supplicant_add_iface()
* @freq: Frequency of the channel in MHz
*
* This callback is called when the driver indicates that a remain-on-channel
* operation has been completed, i.e., the duration on the requested channel
* has timed out.
*/
void wpas_p2p_cancel_remain_on_channel_cb(struct wpa_supplicant *wpa_s,
unsigned int freq)
{
wpa_printf(MSG_DEBUG, "P2P: Cancel remain-on-channel callback "
"(p2p_long_listen=%d ms pending_action_tx=%p)",
wpa_s->p2p_long_listen, wpa_s->pending_action_tx);
wpa_s->off_channel_freq = 0;
if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
return;
if (p2p_listen_end(wpa_s->global->p2p, freq) > 0)
return; /* P2P module started a new operation */
if (wpa_s->pending_action_tx)
return;
if (wpa_s->p2p_long_listen > 0)
wpa_s->p2p_long_listen -= wpa_s->max_remain_on_chan;
if (wpa_s->p2p_long_listen > 0) {
wpa_printf(MSG_DEBUG, "P2P: Continuing long Listen state");
wpas_p2p_listen_start(wpa_s, wpa_s->p2p_long_listen);
}
}
/**
* wpas_p2p_group_remove - Remove a P2P group
* @wpa_s: Pointer to wpa_supplicant data from wpa_supplicant_add_iface()
* @ifname: Network interface name of the group interface or "*" to remove all
* groups
* Returns: 0 on success, -1 on failure
*
* This function is used to remove a P2P group. This can be used to disconnect
* from a group in which the local end is a P2P Client or to end a P2P Group in
* case the local end is the Group Owner. If a virtual network interface was
* created for this group, that interface will be removed. Otherwise, only the
* configured P2P group network will be removed from the interface.
*/
int wpas_p2p_group_remove(struct wpa_supplicant *wpa_s, const char *ifname)
{
struct wpa_global *global = wpa_s->global;
if (os_strcmp(ifname, "*") == 0) {
struct wpa_supplicant *prev;
wpa_s = global->ifaces;
while (wpa_s) {
prev = wpa_s;
wpa_s = wpa_s->next;
wpas_p2p_disconnect(prev);
}
return 0;
}
for (wpa_s = global->ifaces; wpa_s; wpa_s = wpa_s->next) {
if (os_strcmp(wpa_s->ifname, ifname) == 0)
break;
}
return wpas_p2p_disconnect(wpa_s);
}
static void wpas_p2p_init_go_params(struct wpa_supplicant *wpa_s,
struct p2p_go_neg_results *params,
int freq)
{
u8 bssid[ETH_ALEN];
int res;
os_memset(params, 0, sizeof(*params));
params->role_go = 1;
if (freq) {
wpa_printf(MSG_DEBUG, "P2P: Set GO freq based on forced "
"frequency %d MHz", freq);
params->freq = freq;
} else if (wpa_s->conf->p2p_oper_reg_class == 81 &&
wpa_s->conf->p2p_oper_channel >= 1 &&
wpa_s->conf->p2p_oper_channel <= 11) {
params->freq = 2407 + 5 * wpa_s->conf->p2p_oper_channel;
wpa_printf(MSG_DEBUG, "P2P: Set GO freq based on configured "
"frequency %d MHz", params->freq);
} else if (wpa_s->conf->p2p_oper_reg_class == 115 ||
wpa_s->conf->p2p_oper_reg_class == 124) {
params->freq = 5000 + 5 * wpa_s->conf->p2p_oper_channel;
wpa_printf(MSG_DEBUG, "P2P: Set GO freq based on configured "
"frequency %d MHz", params->freq);
} else if (wpa_s->conf->p2p_oper_channel == 0 &&
wpa_s->best_overall_freq > 0 &&
p2p_supported_freq(wpa_s->global->p2p,
wpa_s->best_overall_freq)) {
params->freq = wpa_s->best_overall_freq;
wpa_printf(MSG_DEBUG, "P2P: Set GO freq based on best overall "
"channel %d MHz", params->freq);
} else if (wpa_s->conf->p2p_oper_channel == 0 &&
wpa_s->best_24_freq > 0 &&
p2p_supported_freq(wpa_s->global->p2p,
wpa_s->best_24_freq)) {
params->freq = wpa_s->best_24_freq;
wpa_printf(MSG_DEBUG, "P2P: Set GO freq based on best 2.4 GHz "
"channel %d MHz", params->freq);
} else if (wpa_s->conf->p2p_oper_channel == 0 &&
wpa_s->best_5_freq > 0 &&
p2p_supported_freq(wpa_s->global->p2p,
wpa_s->best_5_freq)) {
params->freq = wpa_s->best_5_freq;
wpa_printf(MSG_DEBUG, "P2P: Set GO freq based on best 5 GHz "
"channel %d MHz", params->freq);
} else {
params->freq = 2412;
wpa_printf(MSG_DEBUG, "P2P: Set GO freq %d MHz (no preference "
"known)", params->freq);
}
if (wpa_s->current_ssid && wpa_drv_get_bssid(wpa_s, bssid) == 0 &&
wpa_s->assoc_freq && !freq) {
wpa_printf(MSG_DEBUG, "P2P: Force GO on the channel we are "
"already using");
params->freq = wpa_s->assoc_freq;
}
res = wpa_drv_shared_freq(wpa_s);
if (res > 0 && !freq) {
wpa_printf(MSG_DEBUG, "P2P: Force GO on the channel we are "
"already using on a shared interface");
params->freq = res;
}
}
static struct wpa_supplicant *
wpas_p2p_get_group_iface(struct wpa_supplicant *wpa_s, int addr_allocated,
int go)
{
struct wpa_supplicant *group_wpa_s;
if (!wpas_p2p_create_iface(wpa_s))
return wpa_s;
if (wpas_p2p_add_group_interface(wpa_s, go ? WPA_IF_P2P_GO :
WPA_IF_P2P_CLIENT) < 0)
return NULL;
group_wpa_s = wpas_p2p_init_group_interface(wpa_s, go);
if (group_wpa_s == NULL) {
wpas_p2p_remove_pending_group_interface(wpa_s);
return NULL;
}
return group_wpa_s;
}
/**
* wpas_p2p_group_add - Add a new P2P group with local end as Group Owner
* @wpa_s: Pointer to wpa_supplicant data from wpa_supplicant_add_iface()
* @persistent_group: Whether to create a persistent group
* @freq: Frequency for the group or 0 to indicate no hardcoding
* Returns: 0 on success, -1 on failure
*
* This function creates a new P2P group with the local end as the Group Owner,
* i.e., without using Group Owner Negotiation.
*/
int wpas_p2p_group_add(struct wpa_supplicant *wpa_s, int persistent_group,
int freq)
{
struct p2p_go_neg_results params;
unsigned int r;
if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
return -1;
if (freq == 2) {
wpa_printf(MSG_DEBUG, "P2P: Request to start GO on 2.4 GHz "
"band");
if (wpa_s->best_24_freq > 0 &&
p2p_supported_freq(wpa_s->global->p2p,
wpa_s->best_24_freq)) {
freq = wpa_s->best_24_freq;
wpa_printf(MSG_DEBUG, "P2P: Use best 2.4 GHz band "
"channel: %d MHz", freq);
} else {
os_get_random((u8 *) &r, sizeof(r));
freq = 2412 + (r % 3) * 25;
wpa_printf(MSG_DEBUG, "P2P: Use random 2.4 GHz band "
"channel: %d MHz", freq);
}
}
if (freq == 5) {
wpa_printf(MSG_DEBUG, "P2P: Request to start GO on 5 GHz "
"band");
if (wpa_s->best_5_freq > 0 &&
p2p_supported_freq(wpa_s->global->p2p,
wpa_s->best_5_freq)) {
freq = wpa_s->best_5_freq;
wpa_printf(MSG_DEBUG, "P2P: Use best 5 GHz band "
"channel: %d MHz", freq);
} else {
os_get_random((u8 *) &r, sizeof(r));
freq = 5180 + (r % 4) * 20;
if (!p2p_supported_freq(wpa_s->global->p2p, freq)) {
wpa_printf(MSG_DEBUG, "P2P: Could not select "
"5 GHz channel for P2P group");
return -1;
}
wpa_printf(MSG_DEBUG, "P2P: Use random 5 GHz band "
"channel: %d MHz", freq);
}
}
if (freq > 0 && !p2p_supported_freq(wpa_s->global->p2p, freq)) {
wpa_printf(MSG_DEBUG, "P2P: The forced channel for GO "
"(%u MHz) is not supported for P2P uses",
freq);
return -1;
}
wpas_p2p_init_go_params(wpa_s, &params, freq);
p2p_go_params(wpa_s->global->p2p, &params);
params.persistent_group = persistent_group;
wpa_s = wpas_p2p_get_group_iface(wpa_s, 0, 1);
if (wpa_s == NULL)
return -1;
wpas_start_wps_go(wpa_s, &params, 0);
return 0;
}
static int wpas_start_p2p_client(struct wpa_supplicant *wpa_s,
struct wpa_ssid *params, int addr_allocated)
{
struct wpa_ssid *ssid;
wpa_s = wpas_p2p_get_group_iface(wpa_s, addr_allocated, 0);
if (wpa_s == NULL)
return -1;
wpa_supplicant_ap_deinit(wpa_s);
ssid = wpa_config_add_network(wpa_s->conf);
if (ssid == NULL)
return -1;
wpa_config_set_network_defaults(ssid);
ssid->temporary = 1;
ssid->proto = WPA_PROTO_RSN;
ssid->pairwise_cipher = WPA_CIPHER_CCMP;
ssid->group_cipher = WPA_CIPHER_CCMP;
ssid->key_mgmt = WPA_KEY_MGMT_PSK;
ssid->ssid = os_malloc(params->ssid_len);
if (ssid->ssid == NULL) {
wpa_config_remove_network(wpa_s->conf, ssid->id);
return -1;
}
os_memcpy(ssid->ssid, params->ssid, params->ssid_len);
ssid->ssid_len = params->ssid_len;
ssid->p2p_group = 1;
ssid->export_keys = 1;
if (params->psk_set) {
os_memcpy(ssid->psk, params->psk, 32);
ssid->psk_set = 1;
}
if (params->passphrase)
ssid->passphrase = os_strdup(params->passphrase);
wpa_supplicant_select_network(wpa_s, ssid);
wpa_s->show_group_started = 1;
return 0;
}
int wpas_p2p_group_add_persistent(struct wpa_supplicant *wpa_s,
struct wpa_ssid *ssid, int addr_allocated,
int freq)
{
struct p2p_go_neg_results params;
int go = 0;
if (ssid->disabled != 2 || ssid->ssid == NULL)
return -1;
if (wpas_get_p2p_group(wpa_s, ssid->ssid, ssid->ssid_len, &go) &&
go == (ssid->mode == WPAS_MODE_P2P_GO)) {
wpa_printf(MSG_DEBUG, "P2P: Requested persistent group is "
"already running");
return 0;
}
/* Make sure we are not running find during connection establishment */
wpas_p2p_stop_find(wpa_s);
if (ssid->mode == WPAS_MODE_INFRA)
return wpas_start_p2p_client(wpa_s, ssid, addr_allocated);
if (ssid->mode != WPAS_MODE_P2P_GO)
return -1;
wpas_p2p_init_go_params(wpa_s, &params, freq);
params.role_go = 1;
if (ssid->passphrase == NULL ||
os_strlen(ssid->passphrase) >= sizeof(params.passphrase)) {
wpa_printf(MSG_DEBUG, "P2P: Invalid passphrase in persistent "
"group");
return -1;
}
os_strlcpy(params.passphrase, ssid->passphrase,
sizeof(params.passphrase));
os_memcpy(params.ssid, ssid->ssid, ssid->ssid_len);
params.ssid_len = ssid->ssid_len;
params.persistent_group = 1;
wpa_s = wpas_p2p_get_group_iface(wpa_s, addr_allocated, 1);
if (wpa_s == NULL)
return -1;
wpas_start_wps_go(wpa_s, &params, 0);
return 0;
}
static void wpas_p2p_ie_update(void *ctx, struct wpabuf *beacon_ies,
struct wpabuf *proberesp_ies)
{
struct wpa_supplicant *wpa_s = ctx;
if (wpa_s->ap_iface) {
struct hostapd_data *hapd = wpa_s->ap_iface->bss[0];
if (beacon_ies) {
wpabuf_free(hapd->p2p_beacon_ie);
hapd->p2p_beacon_ie = beacon_ies;
}
wpabuf_free(hapd->p2p_probe_resp_ie);
hapd->p2p_probe_resp_ie = proberesp_ies;
} else {
wpabuf_free(beacon_ies);
wpabuf_free(proberesp_ies);
}
wpa_supplicant_ap_update_beacon(wpa_s);
}
static void wpas_p2p_idle_update(void *ctx, int idle)
{
struct wpa_supplicant *wpa_s = ctx;
if (!wpa_s->ap_iface)
return;
wpa_printf(MSG_DEBUG, "P2P: GO - group %sidle", idle ? "" : "not ");
if (idle)
wpas_p2p_set_group_idle_timeout(wpa_s);
else
eloop_cancel_timeout(wpas_p2p_group_idle_timeout, wpa_s, NULL);
}
struct p2p_group * wpas_p2p_group_init(struct wpa_supplicant *wpa_s,
int persistent_group,
int group_formation)
{
struct p2p_group *group;
struct p2p_group_config *cfg;
if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_MGMT)
return NULL;
if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
return NULL;
cfg = os_zalloc(sizeof(*cfg));
if (cfg == NULL)
return NULL;
cfg->persistent_group = persistent_group;
os_memcpy(cfg->interface_addr, wpa_s->own_addr, ETH_ALEN);
if (wpa_s->max_stations &&
wpa_s->max_stations < wpa_s->conf->max_num_sta)
cfg->max_clients = wpa_s->max_stations;
else
cfg->max_clients = wpa_s->conf->max_num_sta;
cfg->cb_ctx = wpa_s;
cfg->ie_update = wpas_p2p_ie_update;
cfg->idle_update = wpas_p2p_idle_update;
group = p2p_group_init(wpa_s->global->p2p, cfg);
if (group == NULL)
os_free(cfg);
if (!group_formation)
p2p_group_notif_formation_done(group);
wpa_s->p2p_group = group;
return group;
}
void wpas_p2p_wps_success(struct wpa_supplicant *wpa_s, const u8 *peer_addr,
int registrar)
{
if (!wpa_s->p2p_in_provisioning) {
wpa_printf(MSG_DEBUG, "P2P: Ignore WPS success event - P2P "
"provisioning not in progress");
return;
}
eloop_cancel_timeout(wpas_p2p_group_formation_timeout, wpa_s->parent,
NULL);
if (wpa_s->global->p2p)
p2p_wps_success_cb(wpa_s->global->p2p, peer_addr);
else if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_MGMT)
wpa_drv_wps_success_cb(wpa_s, peer_addr);
wpas_group_formation_completed(wpa_s, 1);
}
void wpas_p2p_wps_failed(struct wpa_supplicant *wpa_s,
struct wps_event_fail *fail)
{
if (!wpa_s->p2p_in_provisioning) {
wpa_printf(MSG_DEBUG, "P2P: Ignore WPS fail event - P2P "
"provisioning not in progress");
return;
}
wpas_notify_p2p_wps_failed(wpa_s, fail);
}
int wpas_p2p_prov_disc(struct wpa_supplicant *wpa_s, const u8 *peer_addr,
const char *config_method)
{
u16 config_methods;
if (os_strcmp(config_method, "display") == 0)
config_methods = WPS_CONFIG_DISPLAY;
else if (os_strcmp(config_method, "keypad") == 0)
config_methods = WPS_CONFIG_KEYPAD;
else if (os_strcmp(config_method, "pbc") == 0 ||
os_strcmp(config_method, "pushbutton") == 0)
config_methods = WPS_CONFIG_PUSHBUTTON;
else
return -1;
if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_MGMT) {
return wpa_drv_p2p_prov_disc_req(wpa_s, peer_addr,
config_methods);
}
if (wpa_s->global->p2p == NULL || wpa_s->global->p2p_disabled)
return -1;
return p2p_prov_disc_req(wpa_s->global->p2p, peer_addr,
config_methods, 0);
}
int wpas_p2p_scan_result_text(const u8 *ies, size_t ies_len, char *buf,
char *end)
{
return p2p_scan_result_text(ies, ies_len, buf, end);
}
static void wpas_p2p_clear_pending_action_tx(struct wpa_supplicant *wpa_s)
{
if (!wpa_s->pending_action_tx)
return;
wpa_printf(MSG_DEBUG, "P2P: Drop pending Action TX due to new "
"operation request");
wpabuf_free(wpa_s->pending_action_tx);
wpa_s->pending_action_tx = NULL;
}
int wpas_p2p_find(struct wpa_supplicant *wpa_s, unsigned int timeout,
enum p2p_discovery_type type,
unsigned int num_req_dev_types, const u8 *req_dev_types)
{
wpas_p2p_clear_pending_action_tx(wpa_s);
wpa_s->p2p_long_listen = 0;
if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_MGMT)
return wpa_drv_p2p_find(wpa_s, timeout, type);
if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
return -1;
return p2p_find(wpa_s->global->p2p, timeout, type,
num_req_dev_types, req_dev_types);
}
void wpas_p2p_stop_find(struct wpa_supplicant *wpa_s)
{
wpas_p2p_clear_pending_action_tx(wpa_s);
wpa_s->p2p_long_listen = 0;
eloop_cancel_timeout(wpas_p2p_long_listen_timeout, wpa_s, NULL);
eloop_cancel_timeout(wpas_p2p_join_scan, wpa_s, NULL);
if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_MGMT) {
wpa_drv_p2p_stop_find(wpa_s);
return;
}
if (wpa_s->global->p2p)
p2p_stop_find(wpa_s->global->p2p);
wpas_p2p_remove_pending_group_interface(wpa_s);
}
static void wpas_p2p_long_listen_timeout(void *eloop_ctx, void *timeout_ctx)
{
struct wpa_supplicant *wpa_s = eloop_ctx;
wpa_s->p2p_long_listen = 0;
}
int wpas_p2p_listen(struct wpa_supplicant *wpa_s, unsigned int timeout)
{
int res;
if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
return -1;
wpas_p2p_clear_pending_action_tx(wpa_s);
if (timeout == 0) {
/*
* This is a request for unlimited Listen state. However, at
* least for now, this is mapped to a Listen state for one
* hour.
*/
timeout = 3600;
}
eloop_cancel_timeout(wpas_p2p_long_listen_timeout, wpa_s, NULL);
wpa_s->p2p_long_listen = 0;
res = wpas_p2p_listen_start(wpa_s, timeout * 1000);
if (res == 0 && timeout * 1000 > wpa_s->max_remain_on_chan) {
wpa_s->p2p_long_listen = timeout * 1000;
eloop_register_timeout(timeout, 0,
wpas_p2p_long_listen_timeout,
wpa_s, NULL);
}
return res;
}
int wpas_p2p_assoc_req_ie(struct wpa_supplicant *wpa_s, struct wpa_bss *bss,
u8 *buf, size_t len, int p2p_group)
{
struct wpabuf *p2p_ie;
int ret;
if (wpa_s->global->p2p_disabled)
return -1;
if (wpa_s->global->p2p == NULL)
return -1;
if (bss == NULL)
return -1;
p2p_ie = wpa_bss_get_vendor_ie_multi(bss, P2P_IE_VENDOR_TYPE);
ret = p2p_assoc_req_ie(wpa_s->global->p2p, bss->bssid, buf, len,
p2p_group, p2p_ie);
wpabuf_free(p2p_ie);
return ret;
}
int wpas_p2p_probe_req_rx(struct wpa_supplicant *wpa_s, const u8 *addr,
const u8 *dst, const u8 *bssid,
const u8 *ie, size_t ie_len)
{
if (wpa_s->global->p2p_disabled)
return 0;
if (wpa_s->global->p2p == NULL)
return 0;
return p2p_probe_req_rx(wpa_s->global->p2p, addr, dst, bssid,
ie, ie_len);
}
void wpas_p2p_rx_action(struct wpa_supplicant *wpa_s, const u8 *da,
const u8 *sa, const u8 *bssid,
u8 category, const u8 *data, size_t len, int freq)
{
if (wpa_s->global->p2p_disabled)
return;
if (wpa_s->global->p2p == NULL)
return;
p2p_rx_action(wpa_s->global->p2p, da, sa, bssid, category, data, len,
freq);
}
void wpas_p2p_scan_ie(struct wpa_supplicant *wpa_s, struct wpabuf *ies)
{
if (wpa_s->global->p2p_disabled)
return;
if (wpa_s->global->p2p == NULL)
return;
p2p_scan_ie(wpa_s->global->p2p, ies);
}
void wpas_p2p_group_deinit(struct wpa_supplicant *wpa_s)
{
p2p_group_deinit(wpa_s->p2p_group);
wpa_s->p2p_group = NULL;
}
int wpas_p2p_reject(struct wpa_supplicant *wpa_s, const u8 *addr)
{
wpa_s->p2p_long_listen = 0;
if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_MGMT)
return wpa_drv_p2p_reject(wpa_s, addr);
if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
return -1;
return p2p_reject(wpa_s->global->p2p, addr);
}
/* Invite to reinvoke a persistent group */
int wpas_p2p_invite(struct wpa_supplicant *wpa_s, const u8 *peer_addr,
struct wpa_ssid *ssid, const u8 *go_dev_addr)
{
enum p2p_invite_role role;
u8 *bssid = NULL;
if (ssid->mode == WPAS_MODE_P2P_GO) {
role = P2P_INVITE_ROLE_GO;
if (peer_addr == NULL) {
wpa_printf(MSG_DEBUG, "P2P: Missing peer "
"address in invitation command");
return -1;
}
if (wpas_p2p_create_iface(wpa_s)) {
if (wpas_p2p_add_group_interface(wpa_s,
WPA_IF_P2P_GO) < 0) {
wpa_printf(MSG_ERROR, "P2P: Failed to "
"allocate a new interface for the "
"group");
return -1;
}
bssid = wpa_s->pending_interface_addr;
} else
bssid = wpa_s->own_addr;
} else {
role = P2P_INVITE_ROLE_CLIENT;
peer_addr = ssid->bssid;
}
wpa_s->pending_invite_ssid_id = ssid->id;
if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_MGMT)
return wpa_drv_p2p_invite(wpa_s, peer_addr, role, bssid,
ssid->ssid, ssid->ssid_len,
go_dev_addr, 1);
if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
return -1;
return p2p_invite(wpa_s->global->p2p, peer_addr, role, bssid,
ssid->ssid, ssid->ssid_len, 0, go_dev_addr, 1);
}
/* Invite to join an active group */
int wpas_p2p_invite_group(struct wpa_supplicant *wpa_s, const char *ifname,
const u8 *peer_addr, const u8 *go_dev_addr)
{
struct wpa_global *global = wpa_s->global;
enum p2p_invite_role role;
u8 *bssid = NULL;
struct wpa_ssid *ssid;
for (wpa_s = global->ifaces; wpa_s; wpa_s = wpa_s->next) {
if (os_strcmp(wpa_s->ifname, ifname) == 0)
break;
}
if (wpa_s == NULL) {
wpa_printf(MSG_DEBUG, "P2P: Interface '%s' not found", ifname);
return -1;
}
ssid = wpa_s->current_ssid;
if (ssid == NULL) {
wpa_printf(MSG_DEBUG, "P2P: No current SSID to use for "
"invitation");
return -1;
}
if (ssid->mode == WPAS_MODE_P2P_GO) {
role = P2P_INVITE_ROLE_ACTIVE_GO;
bssid = wpa_s->own_addr;
if (go_dev_addr == NULL)
go_dev_addr = wpa_s->parent->own_addr;
} else {
role = P2P_INVITE_ROLE_CLIENT;
if (wpa_s->wpa_state < WPA_ASSOCIATED) {
wpa_printf(MSG_DEBUG, "P2P: Not associated - cannot "
"invite to current group");
return -1;
}
bssid = wpa_s->bssid;
if (go_dev_addr == NULL &&
!is_zero_ether_addr(wpa_s->go_dev_addr))
go_dev_addr = wpa_s->go_dev_addr;
}
wpa_s->parent->pending_invite_ssid_id = -1;
if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_MGMT)
return wpa_drv_p2p_invite(wpa_s, peer_addr, role, bssid,
ssid->ssid, ssid->ssid_len,
go_dev_addr, 0);
if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
return -1;
return p2p_invite(wpa_s->global->p2p, peer_addr, role, bssid,
ssid->ssid, ssid->ssid_len, wpa_s->assoc_freq,
go_dev_addr, 0);
}
void wpas_p2p_completed(struct wpa_supplicant *wpa_s)
{
struct wpa_ssid *ssid = wpa_s->current_ssid;
const char *ssid_txt;
u8 go_dev_addr[ETH_ALEN];
int network_id = -1;
int persistent;
if (!wpa_s->show_group_started || !ssid)
return;
wpa_s->show_group_started = 0;
ssid_txt = wpa_ssid_txt(ssid->ssid, ssid->ssid_len);
os_memset(go_dev_addr, 0, ETH_ALEN);
if (ssid->bssid_set)
os_memcpy(go_dev_addr, ssid->bssid, ETH_ALEN);
persistent = wpas_p2p_persistent_group(wpa_s, go_dev_addr, ssid->ssid,
ssid->ssid_len);
os_memcpy(wpa_s->go_dev_addr, go_dev_addr, ETH_ALEN);
if (wpa_s->global->p2p_group_formation == wpa_s)
wpa_s->global->p2p_group_formation = NULL;
if (ssid->passphrase == NULL && ssid->psk_set) {
char psk[65];
wpa_snprintf_hex(psk, sizeof(psk), ssid->psk, 32);
wpa_msg(wpa_s->parent, MSG_INFO, P2P_EVENT_GROUP_STARTED
"%s client ssid=\"%s\" freq=%d psk=%s go_dev_addr="
MACSTR "%s",
wpa_s->ifname, ssid_txt, ssid->frequency, psk,
MAC2STR(go_dev_addr),
persistent ? " [PERSISTENT]" : "");
} else {
wpa_msg(wpa_s->parent, MSG_INFO, P2P_EVENT_GROUP_STARTED
"%s client ssid=\"%s\" freq=%d passphrase=\"%s\" "
"go_dev_addr=" MACSTR "%s",
wpa_s->ifname, ssid_txt, ssid->frequency,
ssid->passphrase ? ssid->passphrase : "",
MAC2STR(go_dev_addr),
persistent ? " [PERSISTENT]" : "");
}
if (persistent)
network_id = wpas_p2p_store_persistent_group(wpa_s->parent,
ssid, go_dev_addr);
if (network_id < 0)
network_id = ssid->id;
wpas_notify_p2p_group_started(wpa_s, ssid, network_id, 1);
}
int wpas_p2p_presence_req(struct wpa_supplicant *wpa_s, u32 duration1,
u32 interval1, u32 duration2, u32 interval2)
{
if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_MGMT)
return -1;
if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
return -1;
if (wpa_s->wpa_state < WPA_ASSOCIATED ||
wpa_s->current_ssid == NULL ||
wpa_s->current_ssid->mode != WPAS_MODE_INFRA)
return -1;
return p2p_presence_req(wpa_s->global->p2p, wpa_s->bssid,
wpa_s->own_addr, wpa_s->assoc_freq,
duration1, interval1, duration2, interval2);
}
int wpas_p2p_ext_listen(struct wpa_supplicant *wpa_s, unsigned int period,
unsigned int interval)
{
if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_MGMT)
return -1;
if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
return -1;
return p2p_ext_listen(wpa_s->global->p2p, period, interval);
}
static void wpas_p2p_group_idle_timeout(void *eloop_ctx, void *timeout_ctx)
{
struct wpa_supplicant *wpa_s = eloop_ctx;
if (wpa_s->conf->p2p_group_idle == 0) {
wpa_printf(MSG_DEBUG, "P2P: Ignore group idle timeout - "
"disabled");
return;
}
wpa_printf(MSG_DEBUG, "P2P: Group idle timeout reached - terminate "
"group");
wpa_s->removal_reason = P2P_GROUP_REMOVAL_IDLE_TIMEOUT;
wpas_p2p_group_delete(wpa_s);
}
static void wpas_p2p_set_group_idle_timeout(struct wpa_supplicant *wpa_s)
{
eloop_cancel_timeout(wpas_p2p_group_idle_timeout, wpa_s, NULL);
if (wpa_s->conf->p2p_group_idle == 0)
return;
if (wpa_s->current_ssid == NULL || !wpa_s->current_ssid->p2p_group)
return;
wpa_printf(MSG_DEBUG, "P2P: Set P2P group idle timeout to %u seconds",
wpa_s->conf->p2p_group_idle);
eloop_register_timeout(wpa_s->conf->p2p_group_idle, 0,
wpas_p2p_group_idle_timeout, wpa_s, NULL);
}
void wpas_p2p_deauth_notif(struct wpa_supplicant *wpa_s, const u8 *bssid,
u16 reason_code, const u8 *ie, size_t ie_len)
{
if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
return;
if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_MGMT)
return;
p2p_deauth_notif(wpa_s->global->p2p, bssid, reason_code, ie, ie_len);
}
void wpas_p2p_disassoc_notif(struct wpa_supplicant *wpa_s, const u8 *bssid,
u16 reason_code, const u8 *ie, size_t ie_len)
{
if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
return;
if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_MGMT)
return;
p2p_disassoc_notif(wpa_s->global->p2p, bssid, reason_code, ie, ie_len);
}
void wpas_p2p_update_config(struct wpa_supplicant *wpa_s)
{
struct p2p_data *p2p = wpa_s->global->p2p;
if (p2p == NULL)
return;
if (!(wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_CAPABLE))
return;
if (wpa_s->conf->changed_parameters & CFG_CHANGED_DEVICE_NAME)
p2p_set_dev_name(p2p, wpa_s->conf->device_name);
if (wpa_s->conf->changed_parameters & CFG_CHANGED_DEVICE_TYPE)
p2p_set_pri_dev_type(p2p, wpa_s->conf->device_type);
if (wpa_s->wps &&
(wpa_s->conf->changed_parameters & CFG_CHANGED_CONFIG_METHODS))
p2p_set_config_methods(p2p, wpa_s->wps->config_methods);
if (wpa_s->wps && (wpa_s->conf->changed_parameters & CFG_CHANGED_UUID))
p2p_set_uuid(p2p, wpa_s->wps->uuid);
if (wpa_s->conf->changed_parameters & CFG_CHANGED_WPS_STRING) {
p2p_set_manufacturer(p2p, wpa_s->conf->manufacturer);
p2p_set_model_name(p2p, wpa_s->conf->model_name);
p2p_set_model_number(p2p, wpa_s->conf->model_number);
p2p_set_serial_number(p2p, wpa_s->conf->serial_number);
}
if (wpa_s->conf->changed_parameters & CFG_CHANGED_SEC_DEVICE_TYPE)
p2p_set_sec_dev_types(p2p,
(void *) wpa_s->conf->sec_device_type,
wpa_s->conf->num_sec_device_types);
if (wpa_s->conf->changed_parameters & CFG_CHANGED_VENDOR_EXTENSION) {
int i;
p2p_remove_wps_vendor_extensions(p2p);
for (i = 0; i < MAX_WPS_VENDOR_EXT; i++) {
if (wpa_s->conf->wps_vendor_ext[i] == NULL)
continue;
p2p_add_wps_vendor_extension(
p2p, wpa_s->conf->wps_vendor_ext[i]);
}
}
if ((wpa_s->conf->changed_parameters & CFG_CHANGED_COUNTRY) &&
wpa_s->conf->country[0] && wpa_s->conf->country[1]) {
char country[3];
country[0] = wpa_s->conf->country[0];
country[1] = wpa_s->conf->country[1];
country[2] = 0x04;
p2p_set_country(p2p, country);
}
if (wpa_s->conf->changed_parameters & CFG_CHANGED_P2P_SSID_POSTFIX) {
p2p_set_ssid_postfix(p2p, (u8 *) wpa_s->conf->p2p_ssid_postfix,
wpa_s->conf->p2p_ssid_postfix ?
os_strlen(wpa_s->conf->p2p_ssid_postfix) :
0);
}
if (wpa_s->conf->changed_parameters & CFG_CHANGED_P2P_INTRA_BSS)
p2p_set_intra_bss_dist(p2p, wpa_s->conf->p2p_intra_bss);
if (wpa_s->conf->changed_parameters & CFG_CHANGED_P2P_LISTEN_CHANNEL) {
u8 reg_class, channel;
int ret;
unsigned int r;
if (wpa_s->conf->p2p_listen_reg_class &&
wpa_s->conf->p2p_listen_channel) {
reg_class = wpa_s->conf->p2p_listen_reg_class;
channel = wpa_s->conf->p2p_listen_channel;
} else {
reg_class = 81;
/*
* Pick one of the social channels randomly as the
* listen channel.
*/
os_get_random((u8 *) &r, sizeof(r));
channel = 1 + (r % 3) * 5;
}
ret = p2p_set_listen_channel(p2p, reg_class, channel);
if (ret)
wpa_printf(MSG_ERROR, "P2P: Own listen channel update "
"failed: %d", ret);
}
if (wpa_s->conf->changed_parameters & CFG_CHANGED_P2P_OPER_CHANNEL) {
u8 op_reg_class, op_channel, cfg_op_channel;
int ret = 0;
unsigned int r;
if (wpa_s->conf->p2p_oper_reg_class &&
wpa_s->conf->p2p_oper_channel) {
op_reg_class = wpa_s->conf->p2p_oper_reg_class;
op_channel = wpa_s->conf->p2p_oper_channel;
cfg_op_channel = 1;
} else {
op_reg_class = 81;
/*
* Use random operation channel from (1, 6, 11)
*if no other preference is indicated.
*/
os_get_random((u8 *) &r, sizeof(r));
op_channel = 1 + (r % 3) * 5;
cfg_op_channel = 0;
}
ret = p2p_set_oper_channel(p2p, op_reg_class, op_channel,
cfg_op_channel);
if (ret)
wpa_printf(MSG_ERROR, "P2P: Own oper channel update "
"failed: %d", ret);
}
}
int wpas_p2p_set_noa(struct wpa_supplicant *wpa_s, u8 count, int start,
int duration)
{
if (!wpa_s->ap_iface)
return -1;
return hostapd_p2p_set_noa(wpa_s->ap_iface->bss[0], count, start,
duration);
}
int wpas_p2p_set_cross_connect(struct wpa_supplicant *wpa_s, int enabled)
{
if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
return -1;
if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_MGMT)
return -1;
wpa_s->global->cross_connection = enabled;
p2p_set_cross_connect(wpa_s->global->p2p, enabled);
if (!enabled) {
struct wpa_supplicant *iface;
for (iface = wpa_s->global->ifaces; iface; iface = iface->next)
{
if (iface->cross_connect_enabled == 0)
continue;
iface->cross_connect_enabled = 0;
iface->cross_connect_in_use = 0;
wpa_msg(iface->parent, MSG_INFO,
P2P_EVENT_CROSS_CONNECT_DISABLE "%s %s",
iface->ifname, iface->cross_connect_uplink);
}
}
return 0;
}
static void wpas_p2p_enable_cross_connect(struct wpa_supplicant *uplink)
{
struct wpa_supplicant *iface;
if (!uplink->global->cross_connection)
return;
for (iface = uplink->global->ifaces; iface; iface = iface->next) {
if (!iface->cross_connect_enabled)
continue;
if (os_strcmp(uplink->ifname, iface->cross_connect_uplink) !=
0)
continue;
if (iface->ap_iface == NULL)
continue;
if (iface->cross_connect_in_use)
continue;
iface->cross_connect_in_use = 1;
wpa_msg(iface->parent, MSG_INFO,
P2P_EVENT_CROSS_CONNECT_ENABLE "%s %s",
iface->ifname, iface->cross_connect_uplink);
}
}
static void wpas_p2p_disable_cross_connect(struct wpa_supplicant *uplink)
{
struct wpa_supplicant *iface;
for (iface = uplink->global->ifaces; iface; iface = iface->next) {
if (!iface->cross_connect_enabled)
continue;
if (os_strcmp(uplink->ifname, iface->cross_connect_uplink) !=
0)
continue;
if (!iface->cross_connect_in_use)
continue;
wpa_msg(iface->parent, MSG_INFO,
P2P_EVENT_CROSS_CONNECT_DISABLE "%s %s",
iface->ifname, iface->cross_connect_uplink);
iface->cross_connect_in_use = 0;
}
}
void wpas_p2p_notif_connected(struct wpa_supplicant *wpa_s)
{
if (wpa_s->ap_iface || wpa_s->current_ssid == NULL ||
wpa_s->current_ssid->mode != WPAS_MODE_INFRA ||
wpa_s->cross_connect_disallowed)
wpas_p2p_disable_cross_connect(wpa_s);
else
wpas_p2p_enable_cross_connect(wpa_s);
if (!wpa_s->ap_iface)
eloop_cancel_timeout(wpas_p2p_group_idle_timeout, wpa_s, NULL);
}
void wpas_p2p_notif_disconnected(struct wpa_supplicant *wpa_s)
{
wpas_p2p_disable_cross_connect(wpa_s);
if (!wpa_s->ap_iface)
wpas_p2p_set_group_idle_timeout(wpa_s);
}
static void wpas_p2p_cross_connect_setup(struct wpa_supplicant *wpa_s)
{
struct wpa_supplicant *iface;
if (!wpa_s->global->cross_connection)
return;
for (iface = wpa_s->global->ifaces; iface; iface = iface->next) {
if (iface == wpa_s)
continue;
if (iface->drv_flags &
WPA_DRIVER_FLAGS_P2P_DEDICATED_INTERFACE)
continue;
if (iface->drv_flags & WPA_DRIVER_FLAGS_P2P_CAPABLE)
continue;
wpa_s->cross_connect_enabled = 1;
os_strlcpy(wpa_s->cross_connect_uplink, iface->ifname,
sizeof(wpa_s->cross_connect_uplink));
wpa_printf(MSG_DEBUG, "P2P: Enable cross connection from "
"%s to %s whenever uplink is available",
wpa_s->ifname, wpa_s->cross_connect_uplink);
if (iface->ap_iface || iface->current_ssid == NULL ||
iface->current_ssid->mode != WPAS_MODE_INFRA ||
iface->cross_connect_disallowed ||
iface->wpa_state != WPA_COMPLETED)
break;
wpa_s->cross_connect_in_use = 1;
wpa_msg(wpa_s->parent, MSG_INFO,
P2P_EVENT_CROSS_CONNECT_ENABLE "%s %s",
wpa_s->ifname, wpa_s->cross_connect_uplink);
break;
}
}
int wpas_p2p_notif_pbc_overlap(struct wpa_supplicant *wpa_s)
{
if (wpa_s->p2p_group_interface != P2P_GROUP_INTERFACE_CLIENT &&
!wpa_s->p2p_in_provisioning)
return 0; /* not P2P client operation */
wpa_printf(MSG_DEBUG, "P2P: Terminate connection due to WPS PBC "
"session overlap");
if (wpa_s != wpa_s->parent)
wpa_msg_ctrl(wpa_s->parent, MSG_INFO, WPS_EVENT_OVERLAP);
if (wpa_s->global->p2p)
p2p_group_formation_failed(wpa_s->global->p2p);
eloop_cancel_timeout(wpas_p2p_group_formation_timeout,
wpa_s->parent, NULL);
wpas_group_formation_completed(wpa_s, 0);
return 1;
}
void wpas_p2p_update_channel_list(struct wpa_supplicant *wpa_s)
{
struct p2p_channels chan;
if (wpa_s->global == NULL || wpa_s->global->p2p == NULL)
return;
os_memset(&chan, 0, sizeof(chan));
if (wpas_p2p_setup_channels(wpa_s, &chan)) {
wpa_printf(MSG_ERROR, "P2P: Failed to update supported "
"channel list");
return;
}
p2p_update_channel_list(wpa_s->global->p2p, &chan);
}
int wpas_p2p_cancel(struct wpa_supplicant *wpa_s)
{
struct wpa_global *global = wpa_s->global;
int found = 0;
const u8 *peer;
if (global->p2p == NULL)
return -1;
wpa_printf(MSG_DEBUG, "P2P: Request to cancel group formation");
if (wpa_s->pending_interface_name[0] &&
!is_zero_ether_addr(wpa_s->pending_interface_addr))
found = 1;
peer = p2p_get_go_neg_peer(global->p2p);
if (peer) {
wpa_printf(MSG_DEBUG, "P2P: Unauthorize pending GO Neg peer "
MACSTR, MAC2STR(peer));
p2p_unauthorize(global->p2p, peer);
}
wpas_p2p_stop_find(wpa_s);
for (wpa_s = global->ifaces; wpa_s; wpa_s = wpa_s->next) {
if (wpa_s == global->p2p_group_formation &&
(wpa_s->p2p_in_provisioning ||
wpa_s->parent->pending_interface_type ==
WPA_IF_P2P_CLIENT)) {
wpa_printf(MSG_DEBUG, "P2P: Interface %s in group "
"formation found - cancelling",
wpa_s->ifname);
found = 1;
eloop_cancel_timeout(wpas_p2p_group_formation_timeout,
wpa_s->parent, NULL);
wpas_p2p_group_delete(wpa_s);
break;
}
}
if (!found) {
wpa_printf(MSG_DEBUG, "P2P: No ongoing group formation found");
return -1;
}
return 0;
}
void wpas_p2p_interface_unavailable(struct wpa_supplicant *wpa_s)
{
if (wpa_s->current_ssid == NULL || !wpa_s->current_ssid->p2p_group)
return;
wpa_printf(MSG_DEBUG, "P2P: Remove group due to driver resource not "
"being available anymore");
wpa_s->removal_reason = P2P_GROUP_REMOVAL_UNAVAILABLE;
wpas_p2p_group_delete(wpa_s);
}
void wpas_p2p_update_best_channels(struct wpa_supplicant *wpa_s,
int freq_24, int freq_5, int freq_overall)
{
struct p2p_data *p2p = wpa_s->global->p2p;
if (p2p == NULL || (wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_MGMT))
return;
p2p_set_best_channels(p2p, freq_24, freq_5, freq_overall);
}
int wpas_p2p_unauthorize(struct wpa_supplicant *wpa_s, const char *addr)
{
u8 peer[ETH_ALEN];
struct p2p_data *p2p = wpa_s->global->p2p;
if (p2p == NULL || (wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_MGMT))
return -1;
if (hwaddr_aton(addr, peer))
return -1;
return p2p_unauthorize(p2p, peer);
}
/**
* wpas_p2p_disconnect - Disconnect from a P2P Group
* @wpa_s: Pointer to wpa_supplicant data
* Returns: 0 on success, -1 on failure
*
* This can be used to disconnect from a group in which the local end is a P2P
* Client or to end a P2P Group in case the local end is the Group Owner. If a
* virtual network interface was created for this group, that interface will be
* removed. Otherwise, only the configured P2P group network will be removed
* from the interface.
*/
int wpas_p2p_disconnect(struct wpa_supplicant *wpa_s)
{
if (wpa_s == NULL)
return -1;
wpa_s->removal_reason = P2P_GROUP_REMOVAL_REQUESTED;
wpas_p2p_group_delete(wpa_s);
return 0;
}
int wpas_p2p_in_progress(struct wpa_supplicant *wpa_s)
{
if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
return 0;
return p2p_in_progress(wpa_s->global->p2p);
}
Reference in a new issue View git blame Copy permalink