static struct wpabuf * p2p_build_prov_disc_resp(struct p2p_data *p2p,
struct p2p_device *dev,
u8 dialog_token,
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;
#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;
u8 conncap = 0;
if (status == P2P_SC_SUCCESS ||
status == P2P_SC_SUCCESS_DEFERRED)
conncap = prov->conncap;
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 && dev &&
(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 && (conncap & P2PS_SETUP_GROUP_OWNER))
p2ps_add_new_group_info(p2p, dev, buf);
/* Add Operating Channel if conncap indicates GO */
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->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);
}
if (persist ||
(conncap & (P2PS_SETUP_CLIENT | P2PS_SETUP_GROUP_OWNER)))
p2p_buf_add_channel_list(buf, p2p->cfg->country,
&p2p->channels);
if (!persist && conncap)
p2p_buf_add_connection_capability(buf, conncap);
p2p_buf_add_advertisement_id(buf, adv_id, prov->adv_mac);
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);
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 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];
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 (!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 (!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);
}
if (shared_group ||
(prov->conncap & (P2PS_SETUP_CLIENT | P2PS_SETUP_NEW)))
p2p_buf_add_channel_list(buf, p2p->cfg->country,
&p2p->channels);
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);
}
if (prov->status < 0 && prov->info[0])
p2p_buf_add_session_info(buf, prov->info);
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 (!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_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 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;
u8 feat_cap_mask[] = { 1, 0 };
int shared_group = 0;
u8 ssid[SSID_MAX_LEN];
size_t ssid_len;
u8 go_dev_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);
}
/* 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(feat_cap_mask), feat_cap_mask);
if (shared_group) {
p2p_buf_add_persistent_group_info(buf, go_dev_addr, ssid, ssid_len);
}
}