* Wi-Fi Direct - P2P provision discovery
* 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.
+ * This software may be distributed under the terms of the BSD license.
+ * See README for more details.
*/
#include "includes.h"
#include "common.h"
#include "common/ieee802_11_defs.h"
+#include "common/wpa_ctrl.h"
#include "wps/wps_defs.h"
#include "p2p_i.h"
#include "p2p.h"
+/*
+ * Number of retries to attempt for provision discovery requests
+ * in case the peer is not listening.
+ */
+#define MAX_PROV_DISC_REQ_RETRIES 120
+
+
static void p2p_build_wps_ie_config_methods(struct wpabuf *buf,
u16 config_methods)
{
}
+static void p2ps_add_new_group_info(struct p2p_data *p2p, struct wpabuf *buf)
+{
+ int found;
+ u8 intended_addr[ETH_ALEN];
+ u8 ssid[SSID_MAX_LEN];
+ size_t ssid_len;
+ int group_iface;
+
+ if (!p2p->cfg->get_go_info)
+ return;
+
+ found = p2p->cfg->get_go_info(
+ p2p->cfg->cb_ctx, intended_addr, ssid,
+ &ssid_len, &group_iface);
+ if (found) {
+ p2p_buf_add_group_id(buf, p2p->cfg->dev_addr,
+ ssid, ssid_len);
+
+ if (group_iface)
+ p2p_buf_add_intended_addr(buf, p2p->intended_addr);
+ else
+ p2p_buf_add_intended_addr(buf, intended_addr);
+ } else {
+ if (!p2p->ssid_set) {
+ p2p_build_ssid(p2p, p2p->ssid, &p2p->ssid_len);
+ p2p->ssid_set = 1;
+ }
+
+ /* Add pre-composed P2P Group ID */
+ p2p_buf_add_group_id(buf, p2p->cfg->dev_addr,
+ p2p->ssid, p2p->ssid_len);
+
+ if (group_iface)
+ p2p_buf_add_intended_addr(
+ buf, p2p->intended_addr);
+ else
+ p2p_buf_add_intended_addr(
+ buf, p2p->cfg->dev_addr);
+ }
+}
+
+
+static void p2ps_add_pd_req_attrs(struct p2p_data *p2p, struct p2p_device *dev,
+ struct wpabuf *buf, u16 config_methods)
+{
+ struct p2ps_provision *prov = p2p->p2ps_prov;
+ struct p2ps_feature_capab fcap = { prov->cpt_mask, 0 };
+ int shared_group = 0;
+ u8 ssid[SSID_MAX_LEN];
+ size_t ssid_len;
+ u8 go_dev_addr[ETH_ALEN];
+ u8 intended_addr[ETH_ALEN];
+
+ /* If we might be explicite group owner, add GO details */
+ if (prov->conncap & (P2PS_SETUP_GROUP_OWNER |
+ P2PS_SETUP_NEW))
+ p2ps_add_new_group_info(p2p, buf);
+
+ if (prov->status >= 0)
+ p2p_buf_add_status(buf, (u8) prov->status);
+ else
+ prov->method = config_methods;
+
+ if (p2p->cfg->get_persistent_group) {
+ shared_group = p2p->cfg->get_persistent_group(
+ p2p->cfg->cb_ctx, dev->info.p2p_device_addr, NULL, 0,
+ go_dev_addr, ssid, &ssid_len, intended_addr);
+ }
+
+ /* Add Operating Channel if conncap includes GO */
+ if (shared_group ||
+ (prov->conncap & (P2PS_SETUP_GROUP_OWNER |
+ P2PS_SETUP_NEW))) {
+ u8 tmp;
+
+ p2p_go_select_channel(p2p, dev, &tmp);
+
+ if (p2p->op_reg_class && p2p->op_channel)
+ p2p_buf_add_operating_channel(buf, p2p->cfg->country,
+ p2p->op_reg_class,
+ p2p->op_channel);
+ else
+ p2p_buf_add_operating_channel(buf, p2p->cfg->country,
+ p2p->cfg->op_reg_class,
+ p2p->cfg->op_channel);
+ }
+
+ p2p_buf_add_channel_list(buf, p2p->cfg->country, &p2p->cfg->channels);
+
+ if (prov->info[0])
+ p2p_buf_add_session_info(buf, prov->info);
+
+ p2p_buf_add_connection_capability(buf, prov->conncap);
+
+ p2p_buf_add_advertisement_id(buf, prov->adv_id, prov->adv_mac);
+
+ if (shared_group || prov->conncap == P2PS_SETUP_NEW ||
+ prov->conncap ==
+ (P2PS_SETUP_GROUP_OWNER | P2PS_SETUP_NEW) ||
+ prov->conncap ==
+ (P2PS_SETUP_GROUP_OWNER | P2PS_SETUP_CLIENT)) {
+ /* Add Config Timeout */
+ p2p_buf_add_config_timeout(buf, p2p->go_timeout,
+ p2p->client_timeout);
+ }
+
+ p2p_buf_add_listen_channel(buf, p2p->cfg->country, p2p->cfg->reg_class,
+ p2p->cfg->channel);
+
+ p2p_buf_add_session_id(buf, prov->session_id, prov->session_mac);
+
+ p2p_buf_add_feature_capability(buf, sizeof(fcap), (const u8 *) &fcap);
+
+ if (shared_group) {
+ p2p_buf_add_persistent_group_info(buf, go_dev_addr,
+ ssid, ssid_len);
+ /* Add intended interface address if it is not added yet */
+ if ((prov->conncap == P2PS_SETUP_NONE ||
+ prov->conncap == P2PS_SETUP_CLIENT) &&
+ !is_zero_ether_addr(intended_addr))
+ p2p_buf_add_intended_addr(buf, intended_addr);
+ }
+}
+
+
static struct wpabuf * p2p_build_prov_disc_req(struct p2p_data *p2p,
- u8 dialog_token,
- u16 config_methods,
- struct p2p_device *go)
+ struct p2p_device *dev,
+ int join)
{
struct wpabuf *buf;
u8 *len;
+ size_t extra = 0;
+ u8 dialog_token = dev->dialog_token;
+ u16 config_methods = dev->req_config_methods;
+ struct p2p_device *go = join ? dev : NULL;
+ u8 group_capab;
+
+#ifdef CONFIG_WIFI_DISPLAY
+ if (p2p->wfd_ie_prov_disc_req)
+ extra = wpabuf_len(p2p->wfd_ie_prov_disc_req);
+#endif /* CONFIG_WIFI_DISPLAY */
+
+ if (p2p->vendor_elem && p2p->vendor_elem[VENDOR_ELEM_P2P_PD_REQ])
+ extra += wpabuf_len(p2p->vendor_elem[VENDOR_ELEM_P2P_PD_REQ]);
+
+ if (p2p->p2ps_prov)
+ extra += os_strlen(p2p->p2ps_prov->info) + 1 +
+ sizeof(struct p2ps_provision);
- buf = wpabuf_alloc(1000);
+ buf = wpabuf_alloc(1000 + extra);
if (buf == NULL)
return NULL;
p2p_buf_add_public_action_hdr(buf, P2P_PROV_DISC_REQ, dialog_token);
len = p2p_buf_add_ie_hdr(buf);
- p2p_buf_add_capability(buf, p2p->dev_capab, 0);
+
+ group_capab = 0;
+ if (p2p->p2ps_prov) {
+ group_capab |= P2P_GROUP_CAPAB_PERSISTENT_GROUP;
+ group_capab |= P2P_GROUP_CAPAB_PERSISTENT_RECONN;
+ if (p2p->cross_connect)
+ group_capab |= P2P_GROUP_CAPAB_CROSS_CONN;
+ if (p2p->cfg->p2p_intra_bss)
+ group_capab |= P2P_GROUP_CAPAB_INTRA_BSS_DIST;
+ }
+ p2p_buf_add_capability(buf, p2p->dev_capab &
+ ~P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY,
+ group_capab);
p2p_buf_add_device_info(buf, p2p, NULL);
- if (go) {
- p2p_buf_add_group_id(buf, go->p2p_device_addr, go->oper_ssid,
- go->oper_ssid_len);
+ if (p2p->p2ps_prov) {
+ p2ps_add_pd_req_attrs(p2p, dev, buf, config_methods);
+ } else if (go) {
+ p2p_buf_add_group_id(buf, go->info.p2p_device_addr,
+ go->oper_ssid, go->oper_ssid_len);
}
p2p_buf_update_ie_hdr(buf, len);
/* WPS IE with Config Methods attribute */
p2p_build_wps_ie_config_methods(buf, config_methods);
+#ifdef CONFIG_WIFI_DISPLAY
+ if (p2p->wfd_ie_prov_disc_req)
+ wpabuf_put_buf(buf, p2p->wfd_ie_prov_disc_req);
+#endif /* CONFIG_WIFI_DISPLAY */
+
+ if (p2p->vendor_elem && p2p->vendor_elem[VENDOR_ELEM_P2P_PD_REQ])
+ wpabuf_put_buf(buf, p2p->vendor_elem[VENDOR_ELEM_P2P_PD_REQ]);
+
return buf;
}
static struct wpabuf * p2p_build_prov_disc_resp(struct p2p_data *p2p,
+ struct p2p_device *dev,
u8 dialog_token,
- u16 config_methods)
+ enum p2p_status_code status,
+ u16 config_methods,
+ u32 adv_id,
+ const u8 *group_id,
+ size_t group_id_len,
+ const u8 *persist_ssid,
+ size_t persist_ssid_len,
+ const u8 *fcap,
+ u16 fcap_len)
{
struct wpabuf *buf;
+ size_t extra = 0;
+ int persist = 0;
- buf = wpabuf_alloc(100);
+#ifdef CONFIG_WIFI_DISPLAY
+ struct wpabuf *wfd_ie = p2p->wfd_ie_prov_disc_resp;
+ if (wfd_ie && group_id) {
+ size_t i;
+ for (i = 0; i < p2p->num_groups; i++) {
+ struct p2p_group *g = p2p->groups[i];
+ struct wpabuf *ie;
+ if (!p2p_group_is_group_id_match(g, group_id,
+ group_id_len))
+ continue;
+ ie = p2p_group_get_wfd_ie(g);
+ if (ie) {
+ wfd_ie = ie;
+ break;
+ }
+ }
+ }
+ if (wfd_ie)
+ extra = wpabuf_len(wfd_ie);
+#endif /* CONFIG_WIFI_DISPLAY */
+
+ if (p2p->vendor_elem && p2p->vendor_elem[VENDOR_ELEM_P2P_PD_RESP])
+ extra += wpabuf_len(p2p->vendor_elem[VENDOR_ELEM_P2P_PD_RESP]);
+
+ buf = wpabuf_alloc(1000 + extra);
if (buf == NULL)
return NULL;
p2p_buf_add_public_action_hdr(buf, P2P_PROV_DISC_RESP, dialog_token);
+ /* Add P2P IE for P2PS */
+ if (p2p->p2ps_prov && p2p->p2ps_prov->adv_id == adv_id) {
+ u8 *len = p2p_buf_add_ie_hdr(buf);
+ struct p2ps_provision *prov = p2p->p2ps_prov;
+ u8 group_capab;
+
+ if (!status && prov->status != -1)
+ status = prov->status;
+
+ p2p_buf_add_status(buf, status);
+ group_capab = P2P_GROUP_CAPAB_PERSISTENT_GROUP |
+ P2P_GROUP_CAPAB_PERSISTENT_RECONN;
+ if (p2p->cross_connect)
+ group_capab |= P2P_GROUP_CAPAB_CROSS_CONN;
+ if (p2p->cfg->p2p_intra_bss)
+ group_capab |= P2P_GROUP_CAPAB_INTRA_BSS_DIST;
+ p2p_buf_add_capability(buf, p2p->dev_capab &
+ ~P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY,
+ group_capab);
+ p2p_buf_add_device_info(buf, p2p, NULL);
+
+ if (persist_ssid && p2p->cfg->get_persistent_group &&
+ (status == P2P_SC_SUCCESS ||
+ status == P2P_SC_SUCCESS_DEFERRED)) {
+ u8 ssid[SSID_MAX_LEN];
+ size_t ssid_len;
+ u8 go_dev_addr[ETH_ALEN];
+ u8 intended_addr[ETH_ALEN];
+
+ persist = p2p->cfg->get_persistent_group(
+ p2p->cfg->cb_ctx,
+ dev->info.p2p_device_addr,
+ persist_ssid, persist_ssid_len, go_dev_addr,
+ ssid, &ssid_len, intended_addr);
+ if (persist) {
+ p2p_buf_add_persistent_group_info(
+ buf, go_dev_addr, ssid, ssid_len);
+ if (!is_zero_ether_addr(intended_addr))
+ p2p_buf_add_intended_addr(
+ buf, intended_addr);
+ }
+ }
+
+ if (!persist && (prov->conncap & P2PS_SETUP_GROUP_OWNER))
+ p2ps_add_new_group_info(p2p, buf);
+
+ /* Add Operating Channel if conncap indicates GO */
+ if (persist || (prov->conncap & P2PS_SETUP_GROUP_OWNER)) {
+ u8 tmp;
+
+ if (dev)
+ p2p_go_select_channel(p2p, dev, &tmp);
+
+ if (p2p->op_reg_class && p2p->op_channel)
+ p2p_buf_add_operating_channel(
+ buf, p2p->cfg->country,
+ p2p->op_reg_class,
+ p2p->op_channel);
+ else
+ p2p_buf_add_operating_channel(
+ buf, p2p->cfg->country,
+ p2p->cfg->op_reg_class,
+ p2p->cfg->op_channel);
+ }
+
+ p2p_buf_add_channel_list(buf, p2p->cfg->country,
+ &p2p->cfg->channels);
+
+ if (!persist && (status == P2P_SC_SUCCESS ||
+ status == P2P_SC_SUCCESS_DEFERRED))
+ p2p_buf_add_connection_capability(buf, prov->conncap);
+
+ p2p_buf_add_advertisement_id(buf, adv_id, prov->adv_mac);
+
+ p2p_buf_add_config_timeout(buf, p2p->go_timeout,
+ p2p->client_timeout);
+
+ p2p_buf_add_session_id(buf, prov->session_id,
+ prov->session_mac);
+
+ p2p_buf_add_feature_capability(buf, fcap_len, fcap);
+ p2p_buf_update_ie_hdr(buf, len);
+ } else if (status != P2P_SC_SUCCESS || adv_id) {
+ u8 *len = p2p_buf_add_ie_hdr(buf);
+
+ p2p_buf_add_status(buf, status);
+
+ if (p2p->p2ps_prov)
+ p2p_buf_add_advertisement_id(buf, adv_id,
+ p2p->p2ps_prov->adv_mac);
+
+ p2p_buf_update_ie_hdr(buf, len);
+ }
+
/* WPS IE with Config Methods attribute */
p2p_build_wps_ie_config_methods(buf, config_methods);
+#ifdef CONFIG_WIFI_DISPLAY
+ if (wfd_ie)
+ wpabuf_put_buf(buf, wfd_ie);
+#endif /* CONFIG_WIFI_DISPLAY */
+
+ if (p2p->vendor_elem && p2p->vendor_elem[VENDOR_ELEM_P2P_PD_RESP])
+ wpabuf_put_buf(buf, p2p->vendor_elem[VENDOR_ELEM_P2P_PD_RESP]);
+
return buf;
}
+static int p2ps_setup_p2ps_prov(struct p2p_data *p2p, u32 adv_id,
+ u32 session_id, u16 method,
+ const u8 *session_mac, const u8 *adv_mac)
+{
+ struct p2ps_provision *tmp;
+
+ if (!p2p->p2ps_prov) {
+ p2p->p2ps_prov = os_zalloc(sizeof(struct p2ps_provision) + 1);
+ if (!p2p->p2ps_prov)
+ return -1;
+ } else {
+ os_memset(p2p->p2ps_prov, 0, sizeof(struct p2ps_provision) + 1);
+ }
+
+ tmp = p2p->p2ps_prov;
+ tmp->adv_id = adv_id;
+ tmp->session_id = session_id;
+ tmp->method = method;
+ os_memcpy(tmp->session_mac, session_mac, ETH_ALEN);
+ os_memcpy(tmp->adv_mac, adv_mac, ETH_ALEN);
+ tmp->info[0] = '\0';
+
+ return 0;
+}
+
+
+static u8 p2ps_own_preferred_cpt(const u8 *cpt_priority, u8 req_cpt_mask)
+{
+ int i;
+
+ for (i = 0; cpt_priority[i]; i++)
+ if (req_cpt_mask & cpt_priority[i])
+ return cpt_priority[i];
+
+ return 0;
+}
+
+
void p2p_process_prov_disc_req(struct p2p_data *p2p, const u8 *sa,
const u8 *data, size_t len, int rx_freq)
{
struct p2p_message msg;
struct p2p_device *dev;
int freq;
- int reject = 1;
+ enum p2p_status_code reject = P2P_SC_FAIL_INCOMPATIBLE_PARAMS;
struct wpabuf *resp;
+ u32 adv_id = 0;
+ struct p2ps_advertisement *p2ps_adv = NULL;
+ u8 conncap = P2PS_SETUP_NEW;
+ u8 auto_accept = 0;
+ u32 session_id = 0;
+ u8 session_mac[ETH_ALEN];
+ u8 adv_mac[ETH_ALEN];
+ const u8 *group_mac;
+ int passwd_id = DEV_PW_DEFAULT;
+ u16 config_methods;
+ u16 allowed_config_methods = WPS_CONFIG_DISPLAY | WPS_CONFIG_KEYPAD;
+ struct p2ps_feature_capab resp_fcap = { 0, 0 };
+ struct p2ps_feature_capab *req_fcap;
if (p2p_parse(data, len, &msg))
return;
- wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
- "P2P: Received Provision Discovery Request from " MACSTR
+ p2p_dbg(p2p, "Received Provision Discovery Request from " MACSTR
" with config methods 0x%x (freq=%d)",
MAC2STR(sa), msg.wps_config_methods, rx_freq);
+ group_mac = msg.intended_addr;
dev = p2p_get_device(p2p, sa);
- if (dev == NULL || !(dev->flags & P2P_DEV_PROBE_REQ_ONLY)) {
- wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
- "P2P: Provision Discovery Request from "
- "unknown peer " MACSTR, MAC2STR(sa));
- if (p2p_add_device(p2p, sa, rx_freq, 0, data + 1, len - 1)) {
- wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
- "P2P: Provision Discovery Request add device "
- "failed " MACSTR, MAC2STR(sa));
+ if (dev == NULL || (dev->flags & P2P_DEV_PROBE_REQ_ONLY)) {
+ p2p_dbg(p2p, "Provision Discovery Request from unknown peer "
+ MACSTR, MAC2STR(sa));
+
+ if (p2p_add_device(p2p, sa, rx_freq, NULL, 0, data + 1, len - 1,
+ 0)) {
+ p2p_dbg(p2p, "Provision Discovery Request add device failed "
+ MACSTR, MAC2STR(sa));
}
+ } else if (msg.wfd_subelems) {
+ wpabuf_free(dev->info.wfd_subelems);
+ dev->info.wfd_subelems = wpabuf_dup(msg.wfd_subelems);
}
- if (!(msg.wps_config_methods &
- (WPS_CONFIG_DISPLAY | WPS_CONFIG_KEYPAD |
- WPS_CONFIG_PUSHBUTTON))) {
- wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Unsupported "
- "Config Methods in Provision Discovery Request");
+ if (msg.adv_id)
+ allowed_config_methods |= WPS_CONFIG_P2PS;
+ else
+ allowed_config_methods |= WPS_CONFIG_PUSHBUTTON;
+
+ if (!(msg.wps_config_methods & allowed_config_methods)) {
+ p2p_dbg(p2p, "Unsupported Config Methods in Provision Discovery Request");
goto out;
}
- if (dev)
+ /* Legacy (non-P2PS) - Unknown groups allowed for P2PS */
+ if (!msg.adv_id && msg.group_id) {
+ size_t i;
+ for (i = 0; i < p2p->num_groups; i++) {
+ if (p2p_group_is_group_id_match(p2p->groups[i],
+ msg.group_id,
+ msg.group_id_len))
+ break;
+ }
+ if (i == p2p->num_groups) {
+ p2p_dbg(p2p, "PD request for unknown P2P Group ID - reject");
+ goto out;
+ }
+ }
+
+ if (dev) {
dev->flags &= ~(P2P_DEV_PD_PEER_DISPLAY |
- P2P_DEV_PD_PEER_KEYPAD);
+ P2P_DEV_PD_PEER_KEYPAD |
+ P2P_DEV_PD_PEER_P2PS);
+
+ /* Remove stale persistent groups */
+ if (p2p->cfg->remove_stale_groups) {
+ p2p->cfg->remove_stale_groups(
+ p2p->cfg->cb_ctx, dev->info.p2p_device_addr,
+ msg.persistent_dev,
+ msg.persistent_ssid, msg.persistent_ssid_len);
+ }
+ }
if (msg.wps_config_methods & WPS_CONFIG_DISPLAY) {
- wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Peer " MACSTR
+ p2p_dbg(p2p, "Peer " MACSTR
" requested us to show a PIN on display", MAC2STR(sa));
if (dev)
dev->flags |= P2P_DEV_PD_PEER_KEYPAD;
+ passwd_id = DEV_PW_USER_SPECIFIED;
} else if (msg.wps_config_methods & WPS_CONFIG_KEYPAD) {
- wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Peer " MACSTR
+ p2p_dbg(p2p, "Peer " MACSTR
" requested us to write its PIN using keypad",
MAC2STR(sa));
if (dev)
dev->flags |= P2P_DEV_PD_PEER_DISPLAY;
+ passwd_id = DEV_PW_REGISTRAR_SPECIFIED;
+ } else if (msg.wps_config_methods & WPS_CONFIG_P2PS) {
+ p2p_dbg(p2p, "Peer " MACSTR " requesting P2PS PIN",
+ MAC2STR(sa));
+ if (dev)
+ dev->flags |= P2P_DEV_PD_PEER_P2PS;
+ passwd_id = DEV_PW_P2PS_DEFAULT;
}
- reject = 0;
+ reject = P2P_SC_SUCCESS;
+
+ os_memset(session_mac, 0, ETH_ALEN);
+ os_memset(adv_mac, 0, ETH_ALEN);
+
+ /* Note 1: A feature capability attribute structure can be changed
+ * in the future. The assumption is that such modifications are
+ * backwards compatible, therefore we allow processing of
+ * msg.feature_cap exceeding the size of the p2ps_feature_capab
+ * structure.
+ * Note 2: Vverification of msg.feature_cap_len below has to be changed
+ * to allow 2 byte feature capability processing if struct
+ * p2ps_feature_capab is extended to include additional fields and it
+ * affects the structure size.
+ */
+ if (msg.adv_id && msg.session_id && msg.session_mac && msg.adv_mac &&
+ msg.feature_cap && msg.feature_cap_len >= sizeof(*req_fcap) &&
+ (msg.status || msg.conn_cap)) {
+ u8 remote_conncap;
+
+ req_fcap = (struct p2ps_feature_capab *) msg.feature_cap;
+
+ os_memcpy(session_mac, msg.session_mac, ETH_ALEN);
+ os_memcpy(adv_mac, msg.adv_mac, ETH_ALEN);
+
+ session_id = WPA_GET_LE32(msg.session_id);
+ adv_id = WPA_GET_LE32(msg.adv_id);
+
+ if (!msg.status)
+ p2ps_adv = p2p_service_p2ps_id(p2p, adv_id);
+
+ p2p_dbg(p2p, "adv_id: %x - p2ps_adv - %p", adv_id, p2ps_adv);
+
+ if (msg.conn_cap)
+ conncap = *msg.conn_cap;
+ remote_conncap = conncap;
+
+ if (p2ps_adv) {
+ auto_accept = p2ps_adv->auto_accept;
+ conncap = p2p->cfg->p2ps_group_capability(
+ p2p->cfg->cb_ctx, conncap, auto_accept);
+
+ p2p_dbg(p2p, "Conncap: local:%d remote:%d result:%d",
+ auto_accept, remote_conncap, conncap);
+
+ resp_fcap.cpt =
+ p2ps_own_preferred_cpt(p2ps_adv->cpt_priority,
+ req_fcap->cpt);
+
+ p2p_dbg(p2p,
+ "cpt: service:0x%x remote:0x%x result:0x%x",
+ p2ps_adv->cpt_mask, req_fcap->cpt,
+ resp_fcap.cpt);
+
+ if (!resp_fcap.cpt) {
+ p2p_dbg(p2p,
+ "Incompatible P2PS feature capability CPT bitmask");
+ reject = P2P_SC_FAIL_INCOMPATIBLE_PARAMS;
+ } else if (p2ps_adv->config_methods &&
+ !(msg.wps_config_methods &
+ p2ps_adv->config_methods)) {
+ p2p_dbg(p2p,
+ "Unsupported config methods in Provision Discovery Request (own=0x%x peer=0x%x)",
+ p2ps_adv->config_methods,
+ msg.wps_config_methods);
+ reject = P2P_SC_FAIL_INCOMPATIBLE_PARAMS;
+ } else if (!p2ps_adv->state) {
+ p2p_dbg(p2p, "P2PS state unavailable");
+ reject = P2P_SC_FAIL_UNABLE_TO_ACCOMMODATE;
+ } else if (!conncap) {
+ p2p_dbg(p2p, "Conncap resolution failed");
+ reject = P2P_SC_FAIL_INCOMPATIBLE_PARAMS;
+ }
+
+ if (msg.wps_config_methods & WPS_CONFIG_KEYPAD) {
+ p2p_dbg(p2p, "Keypad - always defer");
+ auto_accept = 0;
+ }
+
+ if (auto_accept || reject != P2P_SC_SUCCESS) {
+ struct p2ps_provision *tmp;
+
+ if (reject == P2P_SC_SUCCESS && !conncap) {
+ reject =
+ P2P_SC_FAIL_INCOMPATIBLE_PARAMS;
+ }
+
+ if (p2ps_setup_p2ps_prov(
+ p2p, adv_id, session_id,
+ msg.wps_config_methods,
+ session_mac, adv_mac) < 0) {
+ reject = P2P_SC_FAIL_UNABLE_TO_ACCOMMODATE;
+ goto out;
+ }
+
+ tmp = p2p->p2ps_prov;
+ if (conncap) {
+ tmp->conncap = conncap;
+ tmp->status = P2P_SC_SUCCESS;
+ } else {
+ tmp->conncap = auto_accept;
+ tmp->status = P2P_SC_FAIL_INCOMPATIBLE_PARAMS;
+ }
+
+ if (reject != P2P_SC_SUCCESS)
+ goto out;
+ }
+ } else if (!msg.status) {
+ reject = P2P_SC_FAIL_INCOMPATIBLE_PARAMS;
+ goto out;
+ }
+
+ if (!msg.status && !auto_accept &&
+ (!p2p->p2ps_prov || p2p->p2ps_prov->adv_id != adv_id)) {
+ struct p2ps_provision *tmp;
+
+ if (!conncap) {
+ reject = P2P_SC_FAIL_INCOMPATIBLE_PARAMS;
+ goto out;
+ }
+
+ if (p2ps_setup_p2ps_prov(p2p, adv_id, session_id,
+ msg.wps_config_methods,
+ session_mac, adv_mac) < 0) {
+ reject = P2P_SC_FAIL_UNABLE_TO_ACCOMMODATE;
+ goto out;
+ }
+ tmp = p2p->p2ps_prov;
+ reject = P2P_SC_FAIL_INFO_CURRENTLY_UNAVAILABLE;
+ tmp->status = reject;
+ }
+
+ if (msg.status) {
+ if (*msg.status &&
+ *msg.status != P2P_SC_SUCCESS_DEFERRED) {
+ reject = *msg.status;
+ } else if (*msg.status == P2P_SC_SUCCESS_DEFERRED &&
+ p2p->p2ps_prov) {
+ u16 method = p2p->p2ps_prov->method;
+
+ conncap = p2p->cfg->p2ps_group_capability(
+ p2p->cfg->cb_ctx, remote_conncap,
+ p2p->p2ps_prov->conncap);
+
+ p2p_dbg(p2p,
+ "Conncap: local:%d remote:%d result:%d",
+ p2p->p2ps_prov->conncap,
+ remote_conncap, conncap);
+
+ resp_fcap.cpt = p2ps_own_preferred_cpt(
+ p2p->p2ps_prov->cpt_priority,
+ req_fcap->cpt);
+
+ p2p_dbg(p2p,
+ "cpt: local:0x%x remote:0x%x result:0x%x",
+ p2p->p2ps_prov->cpt_mask,
+ req_fcap->cpt, resp_fcap.cpt);
+
+ /*
+ * Ensure that if we asked for PIN originally,
+ * our method is consistent with original
+ * request.
+ */
+ if (method & WPS_CONFIG_DISPLAY)
+ method = WPS_CONFIG_KEYPAD;
+ else if (method & WPS_CONFIG_KEYPAD)
+ method = WPS_CONFIG_DISPLAY;
+
+ if (!conncap ||
+ !(msg.wps_config_methods & method)) {
+ /*
+ * Reject this "Deferred Accept*
+ * if incompatible conncap or method
+ */
+ reject =
+ P2P_SC_FAIL_INCOMPATIBLE_PARAMS;
+ } else if (!resp_fcap.cpt) {
+ p2p_dbg(p2p,
+ "Incompatible P2PS feature capability CPT bitmask");
+ reject =
+ P2P_SC_FAIL_INCOMPATIBLE_PARAMS;
+ } else {
+ reject = P2P_SC_SUCCESS;
+ }
+
+ p2p->p2ps_prov->status = reject;
+ p2p->p2ps_prov->conncap = conncap;
+ }
+ }
+ }
out:
- resp = p2p_build_prov_disc_resp(p2p, msg.dialog_token,
- reject ? 0 : msg.wps_config_methods);
+ if (reject == P2P_SC_SUCCESS ||
+ reject == P2P_SC_FAIL_INFO_CURRENTLY_UNAVAILABLE)
+ config_methods = msg.wps_config_methods;
+ else
+ config_methods = 0;
+ resp = p2p_build_prov_disc_resp(p2p, dev, msg.dialog_token, reject,
+ config_methods, adv_id,
+ msg.group_id, msg.group_id_len,
+ msg.persistent_ssid,
+ msg.persistent_ssid_len,
+ (const u8 *) &resp_fcap,
+ sizeof(resp_fcap));
if (resp == NULL) {
p2p_parse_free(&msg);
return;
}
- wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
- "P2P: Sending Provision Discovery Response");
+ p2p_dbg(p2p, "Sending Provision Discovery Response");
if (rx_freq > 0)
freq = rx_freq;
else
- freq = p2p_channel_to_freq(p2p->cfg->country,
- p2p->cfg->reg_class,
+ freq = p2p_channel_to_freq(p2p->cfg->reg_class,
p2p->cfg->channel);
if (freq < 0) {
- wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
- "P2P: Unknown regulatory class/channel");
+ p2p_dbg(p2p, "Unknown regulatory class/channel");
wpabuf_free(resp);
p2p_parse_free(&msg);
return;
}
- p2p->pending_action_state = P2P_NO_PENDING_ACTION;
- if (p2p->cfg->send_action(p2p->cfg->cb_ctx, freq, sa,
- p2p->cfg->dev_addr, p2p->cfg->dev_addr,
- wpabuf_head(resp), wpabuf_len(resp), 200) <
- 0) {
- wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
- "P2P: Failed to send Action frame");
- }
+ p2p->pending_action_state = P2P_PENDING_PD_RESPONSE;
+ if (p2p_send_action(p2p, freq, sa, p2p->cfg->dev_addr,
+ p2p->cfg->dev_addr,
+ wpabuf_head(resp), wpabuf_len(resp), 200) < 0) {
+ p2p_dbg(p2p, "Failed to send Action frame");
+ } else
+ p2p->send_action_in_progress = 1;
wpabuf_free(resp);
- if (!reject && p2p->cfg->prov_disc_req) {
+ if (!p2p->cfg->p2ps_prov_complete) {
+ /* Don't emit anything */
+ } else if (msg.status && *msg.status != P2P_SC_SUCCESS &&
+ *msg.status != P2P_SC_SUCCESS_DEFERRED) {
+ reject = *msg.status;
+ p2p->cfg->p2ps_prov_complete(p2p->cfg->cb_ctx, reject,
+ sa, adv_mac, session_mac,
+ NULL, adv_id, session_id,
+ 0, 0, msg.persistent_ssid,
+ msg.persistent_ssid_len,
+ 0, 0, NULL, NULL, 0);
+ } else if (msg.status && *msg.status == P2P_SC_SUCCESS_DEFERRED &&
+ p2p->p2ps_prov) {
+ p2p->p2ps_prov->status = reject;
+ p2p->p2ps_prov->conncap = conncap;
+
+ if (reject != P2P_SC_SUCCESS)
+ p2p->cfg->p2ps_prov_complete(p2p->cfg->cb_ctx, reject,
+ sa, adv_mac, session_mac,
+ NULL, adv_id,
+ session_id, conncap, 0,
+ msg.persistent_ssid,
+ msg.persistent_ssid_len, 0,
+ 0, NULL, NULL, 0);
+ else
+ p2p->cfg->p2ps_prov_complete(p2p->cfg->cb_ctx,
+ *msg.status,
+ sa, adv_mac, session_mac,
+ group_mac, adv_id,
+ session_id, conncap,
+ passwd_id,
+ msg.persistent_ssid,
+ msg.persistent_ssid_len, 0,
+ 0, NULL,
+ (const u8 *) &resp_fcap,
+ sizeof(resp_fcap));
+ } else if (msg.status && p2p->p2ps_prov) {
+ p2p->p2ps_prov->status = P2P_SC_SUCCESS;
+ p2p->cfg->p2ps_prov_complete(p2p->cfg->cb_ctx, *msg.status, sa,
+ adv_mac, session_mac, group_mac,
+ adv_id, session_id, conncap,
+ passwd_id,
+ msg.persistent_ssid,
+ msg.persistent_ssid_len,
+ 0, 0, NULL,
+ (const u8 *) &resp_fcap,
+ sizeof(resp_fcap));
+ } else if (msg.status) {
+ } else if (auto_accept && reject == P2P_SC_SUCCESS) {
+ p2p->cfg->p2ps_prov_complete(p2p->cfg->cb_ctx, P2P_SC_SUCCESS,
+ sa, adv_mac, session_mac,
+ group_mac, adv_id, session_id,
+ conncap, passwd_id,
+ msg.persistent_ssid,
+ msg.persistent_ssid_len,
+ 0, 0, NULL,
+ (const u8 *) &resp_fcap,
+ sizeof(resp_fcap));
+ } else if (reject == P2P_SC_FAIL_INFO_CURRENTLY_UNAVAILABLE &&
+ (!msg.session_info || !msg.session_info_len)) {
+ p2p->p2ps_prov->method = msg.wps_config_methods;
+
+ p2p->cfg->p2ps_prov_complete(p2p->cfg->cb_ctx, P2P_SC_SUCCESS,
+ sa, adv_mac, session_mac,
+ group_mac, adv_id, session_id,
+ conncap, passwd_id,
+ msg.persistent_ssid,
+ msg.persistent_ssid_len,
+ 0, 1, NULL,
+ (const u8 *) &resp_fcap,
+ sizeof(resp_fcap));
+ } else if (reject == P2P_SC_FAIL_INFO_CURRENTLY_UNAVAILABLE) {
+ size_t buf_len = msg.session_info_len;
+ char *buf = os_malloc(2 * buf_len + 1);
+
+ if (buf) {
+ p2p->p2ps_prov->method = msg.wps_config_methods;
+
+ utf8_escape((char *) msg.session_info, buf_len,
+ buf, 2 * buf_len + 1);
+
+ p2p->cfg->p2ps_prov_complete(
+ p2p->cfg->cb_ctx, P2P_SC_SUCCESS, sa,
+ adv_mac, session_mac, group_mac, adv_id,
+ session_id, conncap, passwd_id,
+ msg.persistent_ssid, msg.persistent_ssid_len,
+ 0, 1, buf,
+ (const u8 *) &resp_fcap, sizeof(resp_fcap));
+
+ os_free(buf);
+ }
+ }
+
+ /*
+ * prov_disc_req callback is used to generate P2P-PROV-DISC-ENTER-PIN,
+ * P2P-PROV-DISC-SHOW-PIN, and P2P-PROV-DISC-PBC-REQ events.
+ * Call it either on legacy P2P PD or on P2PS PD only if we need to
+ * enter/show PIN.
+ *
+ * The callback is called in the following cases:
+ * 1. Legacy P2P PD request, response status SUCCESS
+ * 2. P2PS advertiser, method: DISPLAY, autoaccept: TRUE,
+ * response status: SUCCESS
+ * 3. P2PS advertiser, method DISPLAY, autoaccept: FALSE,
+ * response status: INFO_CURRENTLY_UNAVAILABLE
+ * 4. P2PS advertiser, method: KEYPAD, autoaccept==any,
+ * response status: INFO_CURRENTLY_UNAVAILABLE
+ * 5. P2PS follow-on with SUCCESS_DEFERRED,
+ * advertiser role: DISPLAY, autoaccept: FALSE,
+ * seeker: KEYPAD, response status: SUCCESS
+ */
+ if (p2p->cfg->prov_disc_req &&
+ ((reject == P2P_SC_SUCCESS && !msg.adv_id) ||
+ (!msg.status &&
+ (reject == P2P_SC_SUCCESS ||
+ reject == P2P_SC_FAIL_INFO_CURRENTLY_UNAVAILABLE) &&
+ passwd_id == DEV_PW_USER_SPECIFIED) ||
+ (!msg.status &&
+ reject == P2P_SC_FAIL_INFO_CURRENTLY_UNAVAILABLE &&
+ passwd_id == DEV_PW_REGISTRAR_SPECIFIED) ||
+ (reject == P2P_SC_SUCCESS &&
+ msg.status && *msg.status == P2P_SC_SUCCESS_DEFERRED &&
+ passwd_id == DEV_PW_REGISTRAR_SPECIFIED))) {
const u8 *dev_addr = sa;
+
if (msg.p2p_device_addr)
dev_addr = msg.p2p_device_addr;
p2p->cfg->prov_disc_req(p2p->cfg->cb_ctx, sa,
msg.device_name, msg.config_methods,
msg.capability ? msg.capability[0] : 0,
msg.capability ? msg.capability[1] :
- 0);
+ 0,
+ msg.group_id, msg.group_id_len);
+ }
+
+ if (dev && reject == P2P_SC_SUCCESS) {
+ switch (config_methods) {
+ case WPS_CONFIG_DISPLAY:
+ dev->wps_prov_info = WPS_CONFIG_KEYPAD;
+ break;
+ case WPS_CONFIG_KEYPAD:
+ dev->wps_prov_info = WPS_CONFIG_DISPLAY;
+ break;
+ case WPS_CONFIG_PUSHBUTTON:
+ dev->wps_prov_info = WPS_CONFIG_PUSHBUTTON;
+ break;
+ case WPS_CONFIG_P2PS:
+ dev->wps_prov_info = WPS_CONFIG_P2PS;
+ break;
+ default:
+ dev->wps_prov_info = 0;
+ break;
+ }
+ if (msg.intended_addr)
+ os_memcpy(dev->interface_addr, msg.intended_addr,
+ ETH_ALEN);
}
p2p_parse_free(&msg);
}
+static int p2p_validate_p2ps_pd_resp(struct p2p_data *p2p,
+ struct p2p_message *msg)
+{
+ u8 conn_cap_go = 0;
+ u8 conn_cap_cli = 0;
+ u32 session_id;
+ u32 adv_id;
+
+#define P2PS_PD_RESP_CHECK(_val, _attr) \
+ do { \
+ if ((_val) && !msg->_attr) { \
+ p2p_dbg(p2p, "P2PS PD Response missing " #_attr); \
+ return -1; \
+ } \
+ } while (0)
+
+ P2PS_PD_RESP_CHECK(1, status);
+ P2PS_PD_RESP_CHECK(1, adv_id);
+ P2PS_PD_RESP_CHECK(1, adv_mac);
+ P2PS_PD_RESP_CHECK(1, capability);
+ P2PS_PD_RESP_CHECK(1, p2p_device_info);
+ P2PS_PD_RESP_CHECK(1, session_id);
+ P2PS_PD_RESP_CHECK(1, session_mac);
+ P2PS_PD_RESP_CHECK(1, feature_cap);
+
+ session_id = WPA_GET_LE32(msg->session_id);
+ adv_id = WPA_GET_LE32(msg->adv_id);
+
+ if (p2p->p2ps_prov->session_id != session_id) {
+ p2p_dbg(p2p,
+ "Ignore PD Response with unexpected Session ID");
+ return -1;
+ }
+
+ if (os_memcmp(p2p->p2ps_prov->session_mac, msg->session_mac,
+ ETH_ALEN)) {
+ p2p_dbg(p2p,
+ "Ignore PD Response with unexpected Session MAC");
+ return -1;
+ }
+
+ if (p2p->p2ps_prov->adv_id != adv_id) {
+ p2p_dbg(p2p,
+ "Ignore PD Response with unexpected Advertisement ID");
+ return -1;
+ }
+
+ if (os_memcmp(p2p->p2ps_prov->adv_mac, msg->adv_mac, ETH_ALEN) != 0) {
+ p2p_dbg(p2p,
+ "Ignore PD Response with unexpected Advertisement MAC");
+ return -1;
+ }
+
+ if (msg->listen_channel) {
+ p2p_dbg(p2p,
+ "Ignore malformed PD Response - unexpected Listen Channel");
+ return -1;
+ }
+
+ if (*msg->status == P2P_SC_SUCCESS &&
+ !(!!msg->conn_cap ^ !!msg->persistent_dev)) {
+ p2p_dbg(p2p,
+ "Ignore malformed PD Response - either conn_cap or persistent group should be present");
+ return -1;
+ }
+
+ if (msg->persistent_dev && *msg->status != P2P_SC_SUCCESS) {
+ p2p_dbg(p2p,
+ "Ignore malformed PD Response - persistent group is present, but the status isn't success");
+ return -1;
+ }
+
+ if (msg->conn_cap) {
+ conn_cap_go = *msg->conn_cap == P2PS_SETUP_GROUP_OWNER;
+ conn_cap_cli = *msg->conn_cap == P2PS_SETUP_CLIENT;
+ }
+
+ P2PS_PD_RESP_CHECK(msg->persistent_dev || conn_cap_go || conn_cap_cli,
+ channel_list);
+ P2PS_PD_RESP_CHECK(msg->persistent_dev || conn_cap_go || conn_cap_cli,
+ config_timeout);
+
+ P2PS_PD_RESP_CHECK(conn_cap_go, group_id);
+ P2PS_PD_RESP_CHECK(conn_cap_go, intended_addr);
+ P2PS_PD_RESP_CHECK(conn_cap_go, operating_channel);
+ /*
+ * TODO: Also validate that operating channel is present if the device
+ * is a GO in a persistent group. We can't do it here since we don't
+ * know what is the role of the peer. It should be probably done in
+ * p2ps_prov_complete callback, but currently operating channel isn't
+ * passed to it.
+ */
+
+#undef P2PS_PD_RESP_CHECK
+
+ return 0;
+}
+
+
void p2p_process_prov_disc_resp(struct p2p_data *p2p, const u8 *sa,
const u8 *data, size_t len)
{
struct p2p_message msg;
struct p2p_device *dev;
- u16 report_config_methods = 0;
+ u16 report_config_methods = 0, req_config_methods;
+ u8 status = P2P_SC_SUCCESS;
+ u32 adv_id = 0;
+ u8 conncap = P2PS_SETUP_NEW;
+ u8 adv_mac[ETH_ALEN];
+ const u8 *group_mac;
+ int passwd_id = DEV_PW_DEFAULT;
+ int p2ps_seeker;
if (p2p_parse(data, len, &msg))
return;
- wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
- "P2P: Received Provisioning Discovery Response from " MACSTR
+ if (p2p->p2ps_prov && p2p_validate_p2ps_pd_resp(p2p, &msg)) {
+ p2p_parse_free(&msg);
+ return;
+ }
+
+ /* Parse the P2PS members present */
+ if (msg.status)
+ status = *msg.status;
+
+ group_mac = msg.intended_addr;
+
+ if (msg.adv_mac)
+ os_memcpy(adv_mac, msg.adv_mac, ETH_ALEN);
+ else
+ os_memset(adv_mac, 0, ETH_ALEN);
+
+ if (msg.adv_id)
+ adv_id = WPA_GET_LE32(msg.adv_id);
+
+ if (msg.conn_cap) {
+ conncap = *msg.conn_cap;
+
+ /* Switch bits to local relative */
+ switch (conncap) {
+ case P2PS_SETUP_GROUP_OWNER:
+ conncap = P2PS_SETUP_CLIENT;
+ break;
+ case P2PS_SETUP_CLIENT:
+ conncap = P2PS_SETUP_GROUP_OWNER;
+ break;
+ }
+ }
+
+ p2p_dbg(p2p, "Received Provision Discovery Response from " MACSTR
" with config methods 0x%x",
MAC2STR(sa), msg.wps_config_methods);
dev = p2p_get_device(p2p, sa);
if (dev == NULL || !dev->req_config_methods) {
- wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
- "P2P: Ignore Provisioning Discovery Response from "
- MACSTR " with no pending request", MAC2STR(sa));
+ p2p_dbg(p2p, "Ignore Provision Discovery Response from " MACSTR
+ " with no pending request", MAC2STR(sa));
p2p_parse_free(&msg);
return;
}
if (dev->dialog_token != msg.dialog_token) {
- wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
- "P2P: Ignore Provisioning Discovery Response with "
- "unexpected Dialog Token %u (expected %u)",
+ p2p_dbg(p2p, "Ignore Provision Discovery Response with unexpected Dialog Token %u (expected %u)",
msg.dialog_token, dev->dialog_token);
p2p_parse_free(&msg);
return;
}
- if (msg.wps_config_methods != dev->req_config_methods) {
- wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Peer rejected "
- "our Provisioning Discovery Request");
+ if (p2p->pending_action_state == P2P_PENDING_PD) {
+ os_memset(p2p->pending_pd_devaddr, 0, ETH_ALEN);
+ p2p->pending_action_state = P2P_NO_PENDING_ACTION;
+ }
+
+ p2ps_seeker = p2p->p2ps_prov && p2p->p2ps_prov->pd_seeker;
+
+ /*
+ * Use a local copy of the requested config methods since
+ * p2p_reset_pending_pd() can clear this in the peer entry.
+ */
+ req_config_methods = dev->req_config_methods;
+
+ /*
+ * If the response is from the peer to whom a user initiated request
+ * was sent earlier, we reset that state info here.
+ */
+ if (p2p->user_initiated_pd &&
+ os_memcmp(p2p->pending_pd_devaddr, sa, ETH_ALEN) == 0)
+ p2p_reset_pending_pd(p2p);
+
+ if (msg.wps_config_methods != req_config_methods) {
+ p2p_dbg(p2p, "Peer rejected our Provision Discovery Request (received config_methods 0x%x expected 0x%x",
+ msg.wps_config_methods, req_config_methods);
+ if (p2p->cfg->prov_disc_fail)
+ p2p->cfg->prov_disc_fail(p2p->cfg->cb_ctx, sa,
+ P2P_PROV_DISC_REJECTED,
+ adv_id, adv_mac, NULL);
p2p_parse_free(&msg);
+ p2ps_prov_free(p2p);
goto out;
}
- report_config_methods = dev->req_config_methods;
+ report_config_methods = req_config_methods;
dev->flags &= ~(P2P_DEV_PD_PEER_DISPLAY |
- P2P_DEV_PD_PEER_KEYPAD);
- if (dev->req_config_methods & WPS_CONFIG_DISPLAY) {
- wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Peer " MACSTR
+ P2P_DEV_PD_PEER_KEYPAD |
+ P2P_DEV_PD_PEER_P2PS);
+ if (req_config_methods & WPS_CONFIG_DISPLAY) {
+ p2p_dbg(p2p, "Peer " MACSTR
" accepted to show a PIN on display", MAC2STR(sa));
dev->flags |= P2P_DEV_PD_PEER_DISPLAY;
+ passwd_id = DEV_PW_REGISTRAR_SPECIFIED;
} else if (msg.wps_config_methods & WPS_CONFIG_KEYPAD) {
- wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Peer " MACSTR
+ p2p_dbg(p2p, "Peer " MACSTR
" accepted to write our PIN using keypad",
MAC2STR(sa));
dev->flags |= P2P_DEV_PD_PEER_KEYPAD;
+ passwd_id = DEV_PW_USER_SPECIFIED;
+ } else if (msg.wps_config_methods & WPS_CONFIG_P2PS) {
+ p2p_dbg(p2p, "Peer " MACSTR " accepted P2PS PIN",
+ MAC2STR(sa));
+ dev->flags |= P2P_DEV_PD_PEER_P2PS;
+ passwd_id = DEV_PW_P2PS_DEFAULT;
+ }
+
+ if ((msg.conn_cap || msg.persistent_dev) &&
+ (status == P2P_SC_SUCCESS || status == P2P_SC_SUCCESS_DEFERRED) &&
+ p2p->p2ps_prov) {
+ if (p2p->cfg->p2ps_prov_complete) {
+ p2p->cfg->p2ps_prov_complete(
+ p2p->cfg->cb_ctx, status, sa, adv_mac,
+ p2p->p2ps_prov->session_mac,
+ group_mac, adv_id, p2p->p2ps_prov->session_id,
+ conncap, passwd_id, msg.persistent_ssid,
+ msg.persistent_ssid_len, 1, 0, NULL,
+ msg.feature_cap, msg.feature_cap_len);
+ }
+ p2ps_prov_free(p2p);
+ } else if (status != P2P_SC_SUCCESS &&
+ status != P2P_SC_FAIL_INFO_CURRENTLY_UNAVAILABLE &&
+ status != P2P_SC_SUCCESS_DEFERRED && p2p->p2ps_prov) {
+ if (p2p->cfg->p2ps_prov_complete)
+ p2p->cfg->p2ps_prov_complete(
+ p2p->cfg->cb_ctx, status, sa, adv_mac,
+ p2p->p2ps_prov->session_mac,
+ group_mac, adv_id, p2p->p2ps_prov->session_id,
+ 0, 0, NULL, 0, 1, 0, NULL, NULL, 0);
+ p2ps_prov_free(p2p);
+ }
+
+ if (status == P2P_SC_FAIL_INFO_CURRENTLY_UNAVAILABLE) {
+ if (p2p->cfg->remove_stale_groups) {
+ p2p->cfg->remove_stale_groups(p2p->cfg->cb_ctx,
+ dev->info.p2p_device_addr,
+ NULL, NULL, 0);
+ }
+
+ if (msg.session_info && msg.session_info_len) {
+ size_t info_len = msg.session_info_len;
+ char *deferred_sess_resp = os_malloc(2 * info_len + 1);
+
+ if (!deferred_sess_resp) {
+ p2p_parse_free(&msg);
+ p2ps_prov_free(p2p);
+ goto out;
+ }
+ utf8_escape((char *) msg.session_info, info_len,
+ deferred_sess_resp, 2 * info_len + 1);
+
+ if (p2p->cfg->prov_disc_fail)
+ p2p->cfg->prov_disc_fail(
+ p2p->cfg->cb_ctx, sa,
+ P2P_PROV_DISC_INFO_UNAVAILABLE,
+ adv_id, adv_mac,
+ deferred_sess_resp);
+ os_free(deferred_sess_resp);
+ } else
+ if (p2p->cfg->prov_disc_fail)
+ p2p->cfg->prov_disc_fail(
+ p2p->cfg->cb_ctx, sa,
+ P2P_PROV_DISC_INFO_UNAVAILABLE,
+ adv_id, adv_mac, NULL);
+ } else if (status != P2P_SC_SUCCESS) {
+ p2p_dbg(p2p, "Peer rejected our Provision Discovery Request");
+ if (p2p->cfg->prov_disc_fail)
+ p2p->cfg->prov_disc_fail(p2p->cfg->cb_ctx, sa,
+ P2P_PROV_DISC_REJECTED,
+ adv_id, adv_mac, NULL);
+ p2p_parse_free(&msg);
+ p2ps_prov_free(p2p);
+ goto out;
}
+
+ /* Store the provisioning info */
+ dev->wps_prov_info = msg.wps_config_methods;
+ if (msg.intended_addr)
+ os_memcpy(dev->interface_addr, msg.intended_addr, ETH_ALEN);
+
p2p_parse_free(&msg);
out:
dev->req_config_methods = 0;
p2p->cfg->send_action_done(p2p->cfg->cb_ctx);
- if (p2p->cfg->prov_disc_resp)
+ if (dev->flags & P2P_DEV_PD_BEFORE_GO_NEG) {
+ p2p_dbg(p2p, "Start GO Neg after the PD-before-GO-Neg workaround with "
+ MACSTR, MAC2STR(dev->info.p2p_device_addr));
+ dev->flags &= ~P2P_DEV_PD_BEFORE_GO_NEG;
+ p2p_connect_send(p2p, dev);
+ return;
+ }
+
+ /*
+ * prov_disc_resp callback is used to generate P2P-PROV-DISC-ENTER-PIN,
+ * P2P-PROV-DISC-SHOW-PIN, and P2P-PROV-DISC-PBC-REQ events.
+ * Call it only for a legacy P2P PD or for P2PS PD scenarios where
+ * show/enter PIN events are needed.
+ *
+ * The callback is called in the following cases:
+ * 1. Legacy P2P PD response with a status SUCCESS
+ * 2. P2PS, advertiser method: DISPLAY, autoaccept: true,
+ * response status: SUCCESS, local method KEYPAD
+ * 3. P2PS, advertiser method: KEYPAD,Seeker side,
+ * response status: INFO_CURRENTLY_UNAVAILABLE,
+ * local method: DISPLAY
+ */
+ if (p2p->cfg->prov_disc_resp &&
+ ((status == P2P_SC_SUCCESS && !adv_id) ||
+ (p2ps_seeker && status == P2P_SC_SUCCESS &&
+ passwd_id == DEV_PW_REGISTRAR_SPECIFIED) ||
+ (p2ps_seeker &&
+ status == P2P_SC_FAIL_INFO_CURRENTLY_UNAVAILABLE &&
+ passwd_id == DEV_PW_USER_SPECIFIED)))
p2p->cfg->prov_disc_resp(p2p->cfg->cb_ctx, sa,
report_config_methods);
+
+ if (p2p->state == P2P_PD_DURING_FIND) {
+ p2p_clear_timeout(p2p);
+ p2p_continue_find(p2p);
+ }
}
int p2p_send_prov_disc_req(struct p2p_data *p2p, struct p2p_device *dev,
- int join)
+ int join, int force_freq)
{
struct wpabuf *req;
int freq;
- freq = dev->listen_freq > 0 ? dev->listen_freq : dev->oper_freq;
+ if (force_freq > 0)
+ freq = force_freq;
+ else
+ freq = dev->listen_freq > 0 ? dev->listen_freq :
+ dev->oper_freq;
if (freq <= 0) {
- wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
- "P2P: No Listen/Operating frequency known for the "
- "peer " MACSTR " to send Provision Discovery Request",
- MAC2STR(dev->p2p_device_addr));
+ p2p_dbg(p2p, "No Listen/Operating frequency known for the peer "
+ MACSTR " to send Provision Discovery Request",
+ MAC2STR(dev->info.p2p_device_addr));
return -1;
}
if (dev->flags & P2P_DEV_GROUP_CLIENT_ONLY) {
- if (!(dev->dev_capab & P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY)) {
- wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
- "P2P: Cannot use PD with P2P Device " MACSTR
+ if (!(dev->info.dev_capab &
+ P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY)) {
+ p2p_dbg(p2p, "Cannot use PD with P2P Device " MACSTR
" that is in a group and is not discoverable",
- MAC2STR(dev->p2p_device_addr));
+ MAC2STR(dev->info.p2p_device_addr));
return -1;
}
/* TODO: use device discoverability request through GO */
}
- dev->dialog_token++;
- if (dev->dialog_token == 0)
- dev->dialog_token = 1;
- req = p2p_build_prov_disc_req(p2p, dev->dialog_token,
- dev->req_config_methods,
- join ? dev : NULL);
+ if (p2p->p2ps_prov) {
+ if (p2p->p2ps_prov->status == P2P_SC_SUCCESS_DEFERRED) {
+ if (p2p->p2ps_prov->method == WPS_CONFIG_DISPLAY)
+ dev->req_config_methods = WPS_CONFIG_KEYPAD;
+ else if (p2p->p2ps_prov->method == WPS_CONFIG_KEYPAD)
+ dev->req_config_methods = WPS_CONFIG_DISPLAY;
+ else
+ dev->req_config_methods = WPS_CONFIG_P2PS;
+ } else {
+ /* Order of preference, based on peer's capabilities */
+ if (p2p->p2ps_prov->method)
+ dev->req_config_methods =
+ p2p->p2ps_prov->method;
+ else if (dev->info.config_methods & WPS_CONFIG_P2PS)
+ dev->req_config_methods = WPS_CONFIG_P2PS;
+ else if (dev->info.config_methods & WPS_CONFIG_DISPLAY)
+ dev->req_config_methods = WPS_CONFIG_DISPLAY;
+ else
+ dev->req_config_methods = WPS_CONFIG_KEYPAD;
+ }
+ p2p_dbg(p2p,
+ "Building PD Request based on P2PS config method 0x%x status %d --> req_config_methods 0x%x",
+ p2p->p2ps_prov->method, p2p->p2ps_prov->status,
+ dev->req_config_methods);
+ }
+
+ req = p2p_build_prov_disc_req(p2p, dev, join);
if (req == NULL)
return -1;
+ if (p2p->state != P2P_IDLE)
+ p2p_stop_listen_for_freq(p2p, freq);
p2p->pending_action_state = P2P_PENDING_PD;
- if (p2p->cfg->send_action(p2p->cfg->cb_ctx, freq,
- dev->p2p_device_addr, p2p->cfg->dev_addr,
- dev->p2p_device_addr,
- wpabuf_head(req), wpabuf_len(req), 200) < 0)
- {
- wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
- "P2P: Failed to send Action frame");
+ if (p2p_send_action(p2p, freq, dev->info.p2p_device_addr,
+ p2p->cfg->dev_addr, dev->info.p2p_device_addr,
+ wpabuf_head(req), wpabuf_len(req), 200) < 0) {
+ p2p_dbg(p2p, "Failed to send Action frame");
wpabuf_free(req);
return -1;
}
+ os_memcpy(p2p->pending_pd_devaddr, dev->info.p2p_device_addr, ETH_ALEN);
+
wpabuf_free(req);
return 0;
}
int p2p_prov_disc_req(struct p2p_data *p2p, const u8 *peer_addr,
- u16 config_methods, int join)
+ struct p2ps_provision *p2ps_prov,
+ u16 config_methods, int join, int force_freq,
+ int user_initiated_pd)
{
struct p2p_device *dev;
if (dev == NULL)
dev = p2p_get_device_interface(p2p, peer_addr);
if (dev == NULL || (dev->flags & P2P_DEV_PROBE_REQ_ONLY)) {
- wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Provision "
- "Discovery Request destination " MACSTR
+ p2p_dbg(p2p, "Provision Discovery Request destination " MACSTR
" not yet known", MAC2STR(peer_addr));
+ os_free(p2ps_prov);
return -1;
}
- wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Provision Discovery "
- "Request with " MACSTR " (config methods 0x%x)",
+ p2p_dbg(p2p, "Provision Discovery Request with " MACSTR
+ " (config methods 0x%x)",
MAC2STR(peer_addr), config_methods);
- if (config_methods == 0)
+ if (config_methods == 0 && !p2ps_prov) {
+ os_free(p2ps_prov);
return -1;
+ }
+
+ if (p2ps_prov && p2ps_prov->status == P2P_SC_SUCCESS_DEFERRED &&
+ p2p->p2ps_prov) {
+ /* Use cached method from deferred provisioning */
+ p2ps_prov->method = p2p->p2ps_prov->method;
+ }
+
+ /* Reset provisioning info */
+ dev->wps_prov_info = 0;
+ p2ps_prov_free(p2p);
+ p2p->p2ps_prov = p2ps_prov;
dev->req_config_methods = config_methods;
+ if (join)
+ dev->flags |= P2P_DEV_PD_FOR_JOIN;
+ else
+ dev->flags &= ~P2P_DEV_PD_FOR_JOIN;
- if (p2p->go_neg_peer ||
- (p2p->state != P2P_IDLE && p2p->state != P2P_SEARCH &&
- p2p->state != P2P_LISTEN_ONLY)) {
- wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Busy with other "
- "operations; postpone Provision Discovery Request "
- "with " MACSTR " (config methods 0x%x)",
+ if (p2p->state != P2P_IDLE && p2p->state != P2P_SEARCH &&
+ p2p->state != P2P_LISTEN_ONLY) {
+ p2p_dbg(p2p, "Busy with other operations; postpone Provision Discovery Request with "
+ MACSTR " (config methods 0x%x)",
MAC2STR(peer_addr), config_methods);
return 0;
}
- return p2p_send_prov_disc_req(p2p, dev, join);
+ p2p->user_initiated_pd = user_initiated_pd;
+ p2p->pd_force_freq = force_freq;
+
+ if (p2p->user_initiated_pd)
+ p2p->pd_retries = MAX_PROV_DISC_REQ_RETRIES;
+
+ /*
+ * Assign dialog token here to use the same value in each retry within
+ * the same PD exchange.
+ */
+ dev->dialog_token++;
+ if (dev->dialog_token == 0)
+ dev->dialog_token = 1;
+
+ return p2p_send_prov_disc_req(p2p, dev, join, force_freq);
+}
+
+
+void p2p_reset_pending_pd(struct p2p_data *p2p)
+{
+ struct p2p_device *dev;
+
+ dl_list_for_each(dev, &p2p->devices, struct p2p_device, list) {
+ if (os_memcmp(p2p->pending_pd_devaddr,
+ dev->info.p2p_device_addr, ETH_ALEN))
+ continue;
+ if (!dev->req_config_methods)
+ continue;
+ if (dev->flags & P2P_DEV_PD_FOR_JOIN)
+ continue;
+ /* Reset the config methods of the device */
+ dev->req_config_methods = 0;
+ }
+
+ p2p->user_initiated_pd = 0;
+ os_memset(p2p->pending_pd_devaddr, 0, ETH_ALEN);
+ p2p->pd_retries = 0;
+ p2p->pd_force_freq = 0;
+}
+
+
+void p2ps_prov_free(struct p2p_data *p2p)
+{
+ os_free(p2p->p2ps_prov);
+ p2p->p2ps_prov = NULL;
}
projects / mech_eap.git / blobdiff