}
-static void p2ps_add_new_group_info(struct p2p_data *p2p, struct wpabuf *buf)
+static void p2ps_add_new_group_info(struct p2p_data *p2p,
+ struct p2p_device *dev,
+ struct wpabuf *buf)
{
int found;
u8 intended_addr[ETH_ALEN];
u8 ssid[SSID_MAX_LEN];
size_t ssid_len;
int group_iface;
+ unsigned int force_freq;
if (!p2p->cfg->get_go_info)
return;
found = p2p->cfg->get_go_info(
p2p->cfg->cb_ctx, intended_addr, ssid,
- &ssid_len, &group_iface);
+ &ssid_len, &group_iface, &force_freq);
if (found) {
+ if (force_freq > 0) {
+ p2p->p2ps_prov->force_freq = force_freq;
+ p2p->p2ps_prov->pref_freq = 0;
+
+ if (dev)
+ p2p_prepare_channel(p2p, dev, force_freq, 0, 0);
+ }
p2p_buf_add_group_id(buf, p2p->cfg->dev_addr,
ssid, ssid_len);
size_t ssid_len;
u8 go_dev_addr[ETH_ALEN];
u8 intended_addr[ETH_ALEN];
+ int follow_on_req_fail = prov->status >= 0 &&
+ prov->status != P2P_SC_SUCCESS_DEFERRED;
/* 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 (!follow_on_req_fail &&
+ (prov->conncap & (P2PS_SETUP_GROUP_OWNER | P2PS_SETUP_NEW)))
+ p2ps_add_new_group_info(p2p, dev, 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;
+ if (!follow_on_req_fail) {
+ 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);
+ }
- p2p_go_select_channel(p2p, dev, &tmp);
+ if (shared_group ||
+ (prov->conncap & (P2PS_SETUP_CLIENT | P2PS_SETUP_NEW)))
+ p2p_buf_add_channel_list(buf, p2p->cfg->country,
+ &p2p->channels);
- if (p2p->op_reg_class && p2p->op_channel)
+ if ((shared_group && !is_zero_ether_addr(intended_addr)) ||
+ (prov->conncap & (P2PS_SETUP_GROUP_OWNER | P2PS_SETUP_NEW)))
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])
+ if (prov->status < 0 && prov->info[0])
p2p_buf_add_session_info(buf, prov->info);
- p2p_buf_add_connection_capability(buf, prov->conncap);
+ if (!follow_on_req_fail)
+ 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);
- }
+ if (!follow_on_req_fail) {
+ 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_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);
u8 *len = p2p_buf_add_ie_hdr(buf);
struct p2ps_provision *prov = p2p->p2ps_prov;
u8 group_capab;
+ u8 conncap = 0;
+
+ if (status == P2P_SC_SUCCESS ||
+ status == P2P_SC_SUCCESS_DEFERRED)
+ conncap = prov->conncap;
if (!status && prov->status != -1)
status = prov->status;
group_capab);
p2p_buf_add_device_info(buf, p2p, NULL);
- if (persist_ssid && p2p->cfg->get_persistent_group &&
+ if (persist_ssid && p2p->cfg->get_persistent_group && dev &&
(status == P2P_SC_SUCCESS ||
status == P2P_SC_SUCCESS_DEFERRED)) {
u8 ssid[SSID_MAX_LEN];
}
}
- if (!persist && (prov->conncap & P2PS_SETUP_GROUP_OWNER))
- p2ps_add_new_group_info(p2p, buf);
+ if (!persist && (conncap & P2PS_SETUP_GROUP_OWNER))
+ p2ps_add_new_group_info(p2p, dev, 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 (persist || (conncap & P2PS_SETUP_GROUP_OWNER)) {
if (p2p->op_reg_class && p2p->op_channel)
p2p_buf_add_operating_channel(
buf, p2p->cfg->country,
p2p->cfg->op_channel);
}
- p2p_buf_add_channel_list(buf, p2p->cfg->country,
- &p2p->cfg->channels);
+ if (persist ||
+ (conncap & (P2PS_SETUP_CLIENT | P2PS_SETUP_GROUP_OWNER)))
+ p2p_buf_add_channel_list(buf, p2p->cfg->country,
+ &p2p->channels);
- if (!persist && (status == P2P_SC_SUCCESS ||
- status == P2P_SC_SUCCESS_DEFERRED))
- p2p_buf_add_connection_capability(buf, prov->conncap);
+ if (!persist && conncap)
+ p2p_buf_add_connection_capability(buf, conncap);
p2p_buf_add_advertisement_id(buf, adv_id, prov->adv_mac);
- p2p_buf_add_config_timeout(buf, p2p->go_timeout,
- p2p->client_timeout);
+ if (persist ||
+ (conncap & (P2PS_SETUP_CLIENT | P2PS_SETUP_GROUP_OWNER)))
+ p2p_buf_add_config_timeout(buf, p2p->go_timeout,
+ p2p->client_timeout);
p2p_buf_add_session_id(buf, prov->session_id,
prov->session_mac);
}
+/* Check if the message contains a valid P2PS PD Request */
+static int p2ps_validate_pd_req(struct p2p_data *p2p, struct p2p_message *msg,
+ const u8 *addr)
+{
+ u8 group_id = 0;
+ u8 intended_addr = 0;
+ u8 operating_channel = 0;
+ u8 channel_list = 0;
+ u8 config_timeout = 0;
+ u8 listen_channel = 0;
+
+#define P2PS_PD_REQ_CHECK(_val, _attr) \
+do { \
+ if ((_val) && !msg->_attr) { \
+ p2p_dbg(p2p, "Not P2PS PD Request. Missing %s", #_attr); \
+ return -1; \
+ } \
+} while (0)
+
+ P2PS_PD_REQ_CHECK(1, adv_id);
+ P2PS_PD_REQ_CHECK(1, session_id);
+ P2PS_PD_REQ_CHECK(1, session_mac);
+ P2PS_PD_REQ_CHECK(1, adv_mac);
+ P2PS_PD_REQ_CHECK(1, capability);
+ P2PS_PD_REQ_CHECK(1, p2p_device_info);
+ P2PS_PD_REQ_CHECK(1, feature_cap);
+
+ /*
+ * We don't need to check Connection Capability, Persistent Group,
+ * and related attributes for follow-on PD Request with a status
+ * other than SUCCESS_DEFERRED.
+ */
+ if (msg->status && *msg->status != P2P_SC_SUCCESS_DEFERRED)
+ return 0;
+
+ P2PS_PD_REQ_CHECK(1, conn_cap);
+
+ /*
+ * Note 1: A feature capability attribute structure can be changed
+ * in the future. The assumption is that such modifications are
+ * backward compatible, therefore we allow processing of msg.feature_cap
+ * exceeding the size of the p2ps_feature_capab structure.
+ * Note 2: Verification 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->feature_cap_len < sizeof(struct p2ps_feature_capab)) {
+ p2p_dbg(p2p, "P2PS: Invalid feature capability len");
+ return -1;
+ }
+
+ switch (*msg->conn_cap) {
+ case P2PS_SETUP_NEW:
+ group_id = 1;
+ intended_addr = 1;
+ operating_channel = 1;
+ channel_list = 1;
+ config_timeout = 1;
+ listen_channel = 1;
+ break;
+ case P2PS_SETUP_CLIENT:
+ channel_list = 1;
+ listen_channel = 1;
+ break;
+ case P2PS_SETUP_GROUP_OWNER:
+ group_id = 1;
+ intended_addr = 1;
+ operating_channel = 1;
+ break;
+ case P2PS_SETUP_NEW | P2PS_SETUP_GROUP_OWNER:
+ group_id = 1;
+ operating_channel = 1;
+ intended_addr = 1;
+ channel_list = 1;
+ config_timeout = 1;
+ break;
+ case P2PS_SETUP_CLIENT | P2PS_SETUP_GROUP_OWNER:
+ group_id = 1;
+ intended_addr = 1;
+ operating_channel = 1;
+ channel_list = 1;
+ config_timeout = 1;
+ break;
+ default:
+ p2p_dbg(p2p, "Invalid P2PS PD connection capability");
+ return -1;
+ }
+
+ if (msg->persistent_dev) {
+ channel_list = 1;
+ config_timeout = 1;
+ if (os_memcmp(msg->persistent_dev, addr, ETH_ALEN) == 0) {
+ intended_addr = 1;
+ operating_channel = 1;
+ }
+ }
+
+ P2PS_PD_REQ_CHECK(group_id, group_id);
+ P2PS_PD_REQ_CHECK(intended_addr, intended_addr);
+ P2PS_PD_REQ_CHECK(operating_channel, operating_channel);
+ P2PS_PD_REQ_CHECK(channel_list, channel_list);
+ P2PS_PD_REQ_CHECK(config_timeout, config_timeout);
+ P2PS_PD_REQ_CHECK(listen_channel, listen_channel);
+
+#undef P2PS_PD_REQ_CHECK
+
+ return 0;
+}
+
+
void p2p_process_prov_disc_req(struct p2p_data *p2p, const u8 *sa,
const u8 *data, size_t len, int rx_freq)
{
u8 conncap = P2PS_SETUP_NEW;
u8 auto_accept = 0;
u32 session_id = 0;
- u8 session_mac[ETH_ALEN];
- u8 adv_mac[ETH_ALEN];
+ u8 session_mac[ETH_ALEN] = { 0, 0, 0, 0, 0, 0 };
+ u8 adv_mac[ETH_ALEN] = { 0, 0, 0, 0, 0, 0 };
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;
+ struct p2ps_feature_capab *req_fcap = NULL;
+ u8 remote_conncap;
+ u16 method;
if (p2p_parse(data, len, &msg))
return;
0)) {
p2p_dbg(p2p, "Provision Discovery Request add device failed "
MACSTR, MAC2STR(sa));
+ goto out;
+ }
+
+ if (!dev) {
+ dev = p2p_get_device(p2p, sa);
+ if (!dev) {
+ p2p_dbg(p2p,
+ "Provision Discovery device not found "
+ MACSTR, MAC2STR(sa));
+ goto out;
+ }
}
} else if (msg.wfd_subelems) {
wpabuf_free(dev->info.wfd_subelems);
dev->info.wfd_subelems = wpabuf_dup(msg.wfd_subelems);
}
- if (msg.adv_id)
- allowed_config_methods |= WPS_CONFIG_P2PS;
- else
+ if (!msg.adv_id) {
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 (!(msg.wps_config_methods & allowed_config_methods)) {
- p2p_dbg(p2p, "Unsupported Config Methods in Provision Discovery Request");
- goto out;
- }
+ /* Legacy (non-P2PS) - Unknown groups allowed for P2PS */
+ if (msg.group_id) {
+ size_t i;
- /* 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;
+ 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 (i == p2p->num_groups) {
- p2p_dbg(p2p, "PD request for unknown P2P Group ID - reject");
+ } else {
+ allowed_config_methods |= WPS_CONFIG_P2PS;
+
+ /*
+ * Set adv_id here, so in case of an error, a P2PS PD Response
+ * will be sent.
+ */
+ adv_id = WPA_GET_LE32(msg.adv_id);
+ if (p2ps_validate_pd_req(p2p, &msg, sa) < 0) {
+ reject = P2P_SC_FAIL_INVALID_PARAMS;
goto out;
}
- }
- if (dev) {
- dev->flags &= ~(P2P_DEV_PD_PEER_DISPLAY |
- P2P_DEV_PD_PEER_KEYPAD |
- P2P_DEV_PD_PEER_P2PS);
+ req_fcap = (struct p2ps_feature_capab *) msg.feature_cap;
- /* 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);
+ 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);
+
+ if (msg.conn_cap)
+ conncap = *msg.conn_cap;
+
+ /*
+ * We need to verify a P2PS config methog in an initial PD
+ * request or in a follow-on PD request with the status
+ * SUCCESS_DEFERRED.
+ */
+ if ((!msg.status || *msg.status == P2P_SC_SUCCESS_DEFERRED) &&
+ !(msg.wps_config_methods & allowed_config_methods)) {
+ p2p_dbg(p2p,
+ "Unsupported Config Methods in Provision Discovery Request");
+ goto out;
}
+
+ /*
+ * TODO: since we don't support multiple PD, reject PD request
+ * if we are in the middle of P2PS PD with some other peer
+ */
}
+
+ dev->flags &= ~(P2P_DEV_PD_PEER_DISPLAY |
+ P2P_DEV_PD_PEER_KEYPAD |
+ P2P_DEV_PD_PEER_P2PS);
+
if (msg.wps_config_methods & WPS_CONFIG_DISPLAY) {
p2p_dbg(p2p, "Peer " MACSTR
" requested us to show a PIN on display", MAC2STR(sa));
- if (dev)
- dev->flags |= P2P_DEV_PD_PEER_KEYPAD;
+ dev->flags |= P2P_DEV_PD_PEER_KEYPAD;
passwd_id = DEV_PW_USER_SPECIFIED;
} else if (msg.wps_config_methods & WPS_CONFIG_KEYPAD) {
p2p_dbg(p2p, "Peer " MACSTR
" requested us to write its PIN using keypad",
MAC2STR(sa));
- if (dev)
- dev->flags |= P2P_DEV_PD_PEER_DISPLAY;
+ 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;
+ dev->flags |= P2P_DEV_PD_PEER_P2PS;
passwd_id = DEV_PW_P2PS_DEFAULT;
}
- reject = P2P_SC_SUCCESS;
+ /* 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);
+ }
- os_memset(session_mac, 0, ETH_ALEN);
- os_memset(adv_mac, 0, ETH_ALEN);
+ reject = P2P_SC_SUCCESS;
- /* 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.
+ /*
+ * End of a legacy P2P PD Request processing, from this point continue
+ * with P2PS one.
*/
- 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;
+ if (!msg.adv_id)
+ goto out;
- req_fcap = (struct p2ps_feature_capab *) msg.feature_cap;
+ remote_conncap = conncap;
- os_memcpy(session_mac, msg.session_mac, ETH_ALEN);
- os_memcpy(adv_mac, msg.adv_mac, ETH_ALEN);
+ if (!msg.status) {
+ unsigned int forced_freq, pref_freq;
- 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);
+ if (os_memcmp(p2p->cfg->dev_addr, msg.adv_mac, ETH_ALEN)) {
+ p2p_dbg(p2p,
+ "P2PS PD adv mac does not match the local one");
+ reject = P2P_SC_FAIL_INCOMPATIBLE_PARAMS;
+ goto out;
+ }
- p2p_dbg(p2p, "adv_id: %x - p2ps_adv - %p", adv_id, p2ps_adv);
+ p2ps_adv = p2p_service_p2ps_id(p2p, adv_id);
+ if (!p2ps_adv) {
+ p2p_dbg(p2p, "P2PS PD invalid adv_id=0x%X", adv_id);
+ reject = P2P_SC_FAIL_INCOMPATIBLE_PARAMS;
+ goto out;
+ }
+ p2p_dbg(p2p, "adv_id: 0x%X, p2ps_adv: %p", adv_id, p2ps_adv);
- if (msg.conn_cap)
- conncap = *msg.conn_cap;
- remote_conncap = conncap;
+ auto_accept = p2ps_adv->auto_accept;
+ conncap = p2p->cfg->p2ps_group_capability(p2p->cfg->cb_ctx,
+ conncap, auto_accept,
+ &forced_freq,
+ &pref_freq);
- 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);
- p2p_dbg(p2p, "Conncap: local:%d remote:%d result:%d",
- auto_accept, remote_conncap, conncap);
+ p2p_prepare_channel(p2p, dev, forced_freq, pref_freq, 0);
- resp_fcap.cpt =
- p2ps_own_preferred_cpt(p2ps_adv->cpt_priority,
+ 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,
- "cpt: service:0x%x remote:0x%x result:0x%x",
- p2ps_adv->cpt_mask, req_fcap->cpt,
- resp_fcap.cpt);
+ "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 (!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 (msg.wps_config_methods & WPS_CONFIG_KEYPAD) {
- p2p_dbg(p2p, "Keypad - always defer");
- auto_accept = 0;
+ if ((remote_conncap & (P2PS_SETUP_NEW | P2PS_SETUP_CLIENT) ||
+ msg.persistent_dev) && conncap != P2PS_SETUP_NEW &&
+ msg.channel_list && msg.channel_list_len &&
+ p2p_peer_channels_check(p2p, &p2p->channels, dev,
+ msg.channel_list,
+ msg.channel_list_len) < 0) {
+ p2p_dbg(p2p,
+ "No common channels - force deferred flow");
+ auto_accept = 0;
+ }
+
+ if (((remote_conncap & P2PS_SETUP_GROUP_OWNER) ||
+ msg.persistent_dev) && msg.operating_channel) {
+ struct p2p_channels intersect;
+
+ /*
+ * There are cases where only the operating channel is
+ * provided. This requires saving the channel as the
+ * supported channel list, and verifying that it is
+ * supported.
+ */
+ if (dev->channels.reg_classes == 0 ||
+ !p2p_channels_includes(&dev->channels,
+ msg.operating_channel[3],
+ msg.operating_channel[4])) {
+ struct p2p_channels *ch = &dev->channels;
+
+ os_memset(ch, 0, sizeof(*ch));
+ ch->reg_class[0].reg_class =
+ msg.operating_channel[3];
+ ch->reg_class[0].channel[0] =
+ msg.operating_channel[4];
+ ch->reg_class[0].channels = 1;
+ ch->reg_classes = 1;
}
- 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;
+ p2p_channels_intersect(&p2p->channels, &dev->channels,
+ &intersect);
+
+ if (intersect.reg_classes == 0) {
+ p2p_dbg(p2p,
+ "No common channels - force deferred flow");
+ auto_accept = 0;
}
- } 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)) {
+ if (auto_accept || reject != P2P_SC_SUCCESS) {
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;
+ tmp->force_freq = forced_freq;
+ tmp->pref_freq = pref_freq;
+ 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;
}
+ }
- 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;
+ if (!msg.status && !auto_accept &&
+ (!p2p->p2ps_prov || p2p->p2ps_prov->adv_id != adv_id)) {
+ struct p2ps_provision *tmp;
- conncap = p2p->cfg->p2ps_group_capability(
- p2p->cfg->cb_ctx, remote_conncap,
- p2p->p2ps_prov->conncap);
+ if (!conncap) {
+ reject = P2P_SC_FAIL_INCOMPATIBLE_PARAMS;
+ goto out;
+ }
- p2p_dbg(p2p,
- "Conncap: local:%d remote:%d result:%d",
- p2p->p2ps_prov->conncap,
- remote_conncap, conncap);
+ 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;
+ }
- resp_fcap.cpt = p2ps_own_preferred_cpt(
- p2p->p2ps_prov->cpt_priority,
- req_fcap->cpt);
+ /* Not a P2PS Follow-on PD */
+ if (!msg.status)
+ goto out;
- p2p_dbg(p2p,
- "cpt: local:0x%x remote:0x%x result:0x%x",
- p2p->p2ps_prov->cpt_mask,
- req_fcap->cpt, resp_fcap.cpt);
+ if (*msg.status && *msg.status != P2P_SC_SUCCESS_DEFERRED) {
+ reject = *msg.status;
+ goto out;
+ }
- /*
- * 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;
- }
- }
+ if (*msg.status != P2P_SC_SUCCESS_DEFERRED || !p2p->p2ps_prov)
+ goto out;
+
+ if (p2p->p2ps_prov->adv_id != adv_id ||
+ os_memcmp(p2p->p2ps_prov->adv_mac, msg.adv_mac, ETH_ALEN)) {
+ p2p_dbg(p2p,
+ "P2PS Follow-on PD with mismatch Advertisement ID/MAC");
+ goto out;
}
+ if (p2p->p2ps_prov->session_id != session_id ||
+ os_memcmp(p2p->p2ps_prov->session_mac, msg.session_mac, ETH_ALEN)) {
+ p2p_dbg(p2p, "P2PS Follow-on PD with mismatch Session ID/MAC");
+ goto out;
+ }
+
+ method = p2p->p2ps_prov->method;
+
+ conncap = p2p->cfg->p2ps_group_capability(p2p->cfg->cb_ctx,
+ remote_conncap,
+ p2p->p2ps_prov->conncap,
+ &p2p->p2ps_prov->force_freq,
+ &p2p->p2ps_prov->pref_freq);
+
+ 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);
+
+ p2p_prepare_channel(p2p, dev, p2p->p2ps_prov->force_freq,
+ p2p->p2ps_prov->pref_freq, 0);
+
+ /*
+ * 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 if ((remote_conncap & (P2PS_SETUP_NEW | P2PS_SETUP_CLIENT) ||
+ msg.persistent_dev) && conncap != P2PS_SETUP_NEW &&
+ msg.channel_list && msg.channel_list_len &&
+ p2p_peer_channels_check(p2p, &p2p->channels, dev,
+ msg.channel_list,
+ msg.channel_list_len) < 0) {
+ p2p_dbg(p2p,
+ "No common channels in Follow-On Provision Discovery Request");
+ reject = P2P_SC_FAIL_NO_COMMON_CHANNELS;
+ } else {
+ reject = P2P_SC_SUCCESS;
+ }
+
+ dev->oper_freq = 0;
+ if (reject == P2P_SC_SUCCESS || reject == P2P_SC_SUCCESS_DEFERRED) {
+ u8 tmp;
+
+ if (msg.operating_channel)
+ dev->oper_freq =
+ p2p_channel_to_freq(msg.operating_channel[3],
+ msg.operating_channel[4]);
+
+ if ((conncap & P2PS_SETUP_GROUP_OWNER) &&
+ p2p_go_select_channel(p2p, dev, &tmp) < 0)
+ reject = P2P_SC_FAIL_NO_COMMON_CHANNELS;
+ }
+
+ p2p->p2ps_prov->status = reject;
+ p2p->p2ps_prov->conncap = conncap;
+
out:
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;
- }
- p2p_dbg(p2p, "Sending Provision Discovery Response");
- if (rx_freq > 0)
- freq = rx_freq;
- else
- freq = p2p_channel_to_freq(p2p->cfg->reg_class,
- p2p->cfg->channel);
- if (freq < 0) {
- p2p_dbg(p2p, "Unknown regulatory class/channel");
+
+ /*
+ * Send PD Response for an initial PD Request or for follow-on
+ * PD Request with P2P_SC_SUCCESS_DEFERRED status.
+ */
+ if (!msg.status || *msg.status == P2P_SC_SUCCESS_DEFERRED) {
+ 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) {
+ p2p_parse_free(&msg);
+ return;
+ }
+ p2p_dbg(p2p, "Sending Provision Discovery Response");
+ if (rx_freq > 0)
+ freq = rx_freq;
+ else
+ freq = p2p_channel_to_freq(p2p->cfg->reg_class,
+ p2p->cfg->channel);
+ if (freq < 0) {
+ p2p_dbg(p2p, "Unknown regulatory class/channel");
+ wpabuf_free(resp);
+ p2p_parse_free(&msg);
+ return;
+ }
+ 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),
+ 50) < 0)
+ p2p_dbg(p2p, "Failed to send Action frame");
+ else
+ p2p->send_action_in_progress = 1;
+
wpabuf_free(resp);
+ }
+
+ if (!dev) {
p2p_parse_free(&msg);
return;
}
- 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);
+ freq = 0;
+ if (reject == P2P_SC_SUCCESS && conncap == P2PS_SETUP_GROUP_OWNER) {
+ freq = p2p_channel_to_freq(p2p->op_reg_class,
+ p2p->op_channel);
+ if (freq < 0)
+ freq = 0;
+ }
if (!p2p->cfg->p2ps_prov_complete) {
/* Don't emit anything */
NULL, adv_id, session_id,
0, 0, msg.persistent_ssid,
msg.persistent_ssid_len,
- 0, 0, NULL, NULL, 0);
+ 0, 0, NULL, NULL, 0, freq,
+ NULL, 0);
} else if (msg.status && *msg.status == P2P_SC_SUCCESS_DEFERRED &&
p2p->p2ps_prov) {
p2p->p2ps_prov->status = reject;
session_id, conncap, 0,
msg.persistent_ssid,
msg.persistent_ssid_len, 0,
- 0, NULL, NULL, 0);
+ 0, NULL, NULL, 0, freq,
+ NULL, 0);
else
p2p->cfg->p2ps_prov_complete(p2p->cfg->cb_ctx,
*msg.status,
msg.persistent_ssid_len, 0,
0, NULL,
(const u8 *) &resp_fcap,
- sizeof(resp_fcap));
+ sizeof(resp_fcap), freq,
+ NULL, 0);
} 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,
msg.persistent_ssid_len,
0, 0, NULL,
(const u8 *) &resp_fcap,
- sizeof(resp_fcap));
+ sizeof(resp_fcap), freq, NULL, 0);
} else if (msg.status) {
} else if (auto_accept && reject == P2P_SC_SUCCESS) {
p2p->cfg->p2ps_prov_complete(p2p->cfg->cb_ctx, P2P_SC_SUCCESS,
msg.persistent_ssid_len,
0, 0, NULL,
(const u8 *) &resp_fcap,
- sizeof(resp_fcap));
+ sizeof(resp_fcap), freq,
+ msg.group_id ?
+ msg.group_id + ETH_ALEN : NULL,
+ msg.group_id ?
+ msg.group_id_len - ETH_ALEN : 0);
} else if (reject == P2P_SC_FAIL_INFO_CURRENTLY_UNAVAILABLE &&
(!msg.session_info || !msg.session_info_len)) {
p2p->p2ps_prov->method = msg.wps_config_methods;
msg.persistent_ssid_len,
0, 1, NULL,
(const u8 *) &resp_fcap,
- sizeof(resp_fcap));
+ sizeof(resp_fcap), freq, NULL, 0);
} 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);
session_id, conncap, passwd_id,
msg.persistent_ssid, msg.persistent_ssid_len,
0, 1, buf,
- (const u8 *) &resp_fcap, sizeof(resp_fcap));
+ (const u8 *) &resp_fcap, sizeof(resp_fcap),
+ freq, NULL, 0);
os_free(buf);
}
msg.group_id, msg.group_id_len);
}
- if (dev && reject == P2P_SC_SUCCESS) {
+ if (reject == P2P_SC_SUCCESS) {
switch (config_methods) {
case WPS_CONFIG_DISPLAY:
dev->wps_prov_info = WPS_CONFIG_KEYPAD;
" with no pending request", MAC2STR(sa));
p2p_parse_free(&msg);
return;
+ } else if (msg.wfd_subelems) {
+ wpabuf_free(dev->info.wfd_subelems);
+ dev->info.wfd_subelems = wpabuf_dup(msg.wfd_subelems);
}
if (dev->dialog_token != msg.dialog_token) {
passwd_id = DEV_PW_P2PS_DEFAULT;
}
- if ((msg.conn_cap || msg.persistent_dev) &&
- (status == P2P_SC_SUCCESS || status == P2P_SC_SUCCESS_DEFERRED) &&
+ if ((status == P2P_SC_SUCCESS || status == P2P_SC_SUCCESS_DEFERRED) &&
p2p->p2ps_prov) {
+ dev->oper_freq = 0;
+
+ /*
+ * Save the reported channel list and operating frequency.
+ * Note that the specification mandates that the responder
+ * should include in the channel list only channels reported by
+ * the initiator, so this is only a sanity check, and if this
+ * fails the flow would continue, although it would probably
+ * fail. Same is true for the operating channel.
+ */
+ if (msg.channel_list && msg.channel_list_len &&
+ p2p_peer_channels_check(p2p, &p2p->channels, dev,
+ msg.channel_list,
+ msg.channel_list_len) < 0)
+ p2p_dbg(p2p, "P2PS PD Response - no common channels");
+
+ if (msg.operating_channel) {
+ if (p2p_channels_includes(&p2p->channels,
+ msg.operating_channel[3],
+ msg.operating_channel[4]) &&
+ p2p_channels_includes(&dev->channels,
+ msg.operating_channel[3],
+ msg.operating_channel[4])) {
+ dev->oper_freq =
+ p2p_channel_to_freq(
+ msg.operating_channel[3],
+ msg.operating_channel[4]);
+ } else {
+ p2p_dbg(p2p,
+ "P2PS PD Response - invalid operating channel");
+ }
+ }
+
if (p2p->cfg->p2ps_prov_complete) {
+ int freq = 0;
+
+ if (conncap == P2PS_SETUP_GROUP_OWNER) {
+ u8 tmp;
+
+ /*
+ * Re-select the operating channel as it is
+ * possible that original channel is no longer
+ * valid. This should not really fail.
+ */
+ if (p2p_go_select_channel(p2p, dev, &tmp) < 0)
+ p2p_dbg(p2p,
+ "P2PS PD channel selection failed");
+
+ freq = p2p_channel_to_freq(p2p->op_reg_class,
+ p2p->op_channel);
+ if (freq < 0)
+ freq = 0;
+ }
+
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);
+ msg.feature_cap, msg.feature_cap_len, freq,
+ msg.group_id ? msg.group_id + ETH_ALEN : NULL,
+ msg.group_id ? msg.group_id_len - ETH_ALEN : 0);
}
p2ps_prov_free(p2p);
} else if (status != P2P_SC_SUCCESS &&
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);
+ 0, 0, NULL, 0, 1, 0, NULL, NULL, 0, 0, NULL, 0);
p2ps_prov_free(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);
+
+ if (p2p_prepare_channel(p2p, dev, p2p->p2ps_prov->force_freq,
+ p2p->p2ps_prov->pref_freq, 1) < 0)
+ return -1;
}
req = p2p_build_prov_disc_req(p2p, dev, join);
projects / mech_eap.git / blobdiff