3 * Copyright (c) 2009-2010, Atheros Communications
5 * This software may be distributed under the terms of the BSD license.
6 * See README for more details.
12 #include "common/ieee802_11_defs.h"
13 #include "wps/wps_i.h"
17 void p2p_buf_add_action_hdr(struct wpabuf *buf, u8 subtype, u8 dialog_token)
19 wpabuf_put_u8(buf, WLAN_ACTION_VENDOR_SPECIFIC);
20 wpabuf_put_be24(buf, OUI_WFA);
21 wpabuf_put_u8(buf, P2P_OUI_TYPE);
23 wpabuf_put_u8(buf, subtype); /* OUI Subtype */
24 wpabuf_put_u8(buf, dialog_token);
25 wpa_printf(MSG_DEBUG, "P2P: * Dialog Token: %d", dialog_token);
29 void p2p_buf_add_public_action_hdr(struct wpabuf *buf, u8 subtype,
32 wpabuf_put_u8(buf, WLAN_ACTION_PUBLIC);
33 wpabuf_put_u8(buf, WLAN_PA_VENDOR_SPECIFIC);
34 wpabuf_put_be24(buf, OUI_WFA);
35 wpabuf_put_u8(buf, P2P_OUI_TYPE);
37 wpabuf_put_u8(buf, subtype); /* OUI Subtype */
38 wpabuf_put_u8(buf, dialog_token);
39 wpa_printf(MSG_DEBUG, "P2P: * Dialog Token: %d", dialog_token);
43 u8 * p2p_buf_add_ie_hdr(struct wpabuf *buf)
48 wpabuf_put_u8(buf, WLAN_EID_VENDOR_SPECIFIC);
49 len = wpabuf_put(buf, 1); /* IE length to be filled */
50 wpabuf_put_be24(buf, OUI_WFA);
51 wpabuf_put_u8(buf, P2P_OUI_TYPE);
52 wpa_printf(MSG_DEBUG, "P2P: * P2P IE header");
57 void p2p_buf_update_ie_hdr(struct wpabuf *buf, u8 *len)
59 /* Update P2P IE Length */
60 *len = (u8 *) wpabuf_put(buf, 0) - len - 1;
64 void p2p_buf_add_capability(struct wpabuf *buf, u8 dev_capab, u8 group_capab)
67 wpabuf_put_u8(buf, P2P_ATTR_CAPABILITY);
68 wpabuf_put_le16(buf, 2);
69 wpabuf_put_u8(buf, dev_capab); /* Device Capabilities */
70 wpabuf_put_u8(buf, group_capab); /* Group Capabilities */
71 wpa_printf(MSG_DEBUG, "P2P: * Capability dev=%02x group=%02x",
72 dev_capab, group_capab);
76 void p2p_buf_add_go_intent(struct wpabuf *buf, u8 go_intent)
78 /* Group Owner Intent */
79 wpabuf_put_u8(buf, P2P_ATTR_GROUP_OWNER_INTENT);
80 wpabuf_put_le16(buf, 1);
81 wpabuf_put_u8(buf, go_intent);
82 wpa_printf(MSG_DEBUG, "P2P: * GO Intent: Intent %u Tie breaker %u",
83 go_intent >> 1, go_intent & 0x01);
87 void p2p_buf_add_listen_channel(struct wpabuf *buf, const char *country,
88 u8 reg_class, u8 channel)
91 wpabuf_put_u8(buf, P2P_ATTR_LISTEN_CHANNEL);
92 wpabuf_put_le16(buf, 5);
93 wpabuf_put_data(buf, country, 3);
94 wpabuf_put_u8(buf, reg_class); /* Regulatory Class */
95 wpabuf_put_u8(buf, channel); /* Channel Number */
96 wpa_printf(MSG_DEBUG, "P2P: * Listen Channel: Regulatory Class %u "
97 "Channel %u", reg_class, channel);
101 void p2p_buf_add_operating_channel(struct wpabuf *buf, const char *country,
102 u8 reg_class, u8 channel)
104 /* Operating Channel */
105 wpabuf_put_u8(buf, P2P_ATTR_OPERATING_CHANNEL);
106 wpabuf_put_le16(buf, 5);
107 wpabuf_put_data(buf, country, 3);
108 wpabuf_put_u8(buf, reg_class); /* Regulatory Class */
109 wpabuf_put_u8(buf, channel); /* Channel Number */
110 wpa_printf(MSG_DEBUG, "P2P: * Operating Channel: Regulatory Class %u "
111 "Channel %u", reg_class, channel);
115 void p2p_buf_add_channel_list(struct wpabuf *buf, const char *country,
116 struct p2p_channels *chan)
122 wpabuf_put_u8(buf, P2P_ATTR_CHANNEL_LIST);
123 len = wpabuf_put(buf, 2); /* IE length to be filled */
124 wpabuf_put_data(buf, country, 3); /* Country String */
126 for (i = 0; i < chan->reg_classes; i++) {
127 struct p2p_reg_class *c = &chan->reg_class[i];
128 wpabuf_put_u8(buf, c->reg_class);
129 wpabuf_put_u8(buf, c->channels);
130 wpabuf_put_data(buf, c->channel, c->channels);
133 /* Update attribute length */
134 WPA_PUT_LE16(len, (u8 *) wpabuf_put(buf, 0) - len - 2);
135 wpa_hexdump(MSG_DEBUG, "P2P: * Channel List",
136 len + 2, (u8 *) wpabuf_put(buf, 0) - len - 2);
140 void p2p_buf_add_status(struct wpabuf *buf, u8 status)
143 wpabuf_put_u8(buf, P2P_ATTR_STATUS);
144 wpabuf_put_le16(buf, 1);
145 wpabuf_put_u8(buf, status);
146 wpa_printf(MSG_DEBUG, "P2P: * Status: %d", status);
150 void p2p_buf_add_device_info(struct wpabuf *buf, struct p2p_data *p2p,
151 struct p2p_device *peer)
157 /* P2P Device Info */
158 wpabuf_put_u8(buf, P2P_ATTR_DEVICE_INFO);
159 len = wpabuf_put(buf, 2); /* IE length to be filled */
161 /* P2P Device address */
162 wpabuf_put_data(buf, p2p->cfg->dev_addr, ETH_ALEN);
166 if (peer && peer->wps_method != WPS_NOT_READY) {
167 if (peer->wps_method == WPS_PBC)
168 methods |= WPS_CONFIG_PUSHBUTTON;
169 else if (peer->wps_method == WPS_PIN_DISPLAY ||
170 peer->wps_method == WPS_PIN_KEYPAD)
171 methods |= WPS_CONFIG_DISPLAY | WPS_CONFIG_KEYPAD;
172 } else if (p2p->cfg->config_methods) {
173 methods |= p2p->cfg->config_methods &
174 (WPS_CONFIG_PUSHBUTTON | WPS_CONFIG_DISPLAY |
177 methods |= WPS_CONFIG_PUSHBUTTON;
178 methods |= WPS_CONFIG_DISPLAY | WPS_CONFIG_KEYPAD;
180 wpabuf_put_be16(buf, methods);
182 /* Primary Device Type */
183 wpabuf_put_data(buf, p2p->cfg->pri_dev_type,
184 sizeof(p2p->cfg->pri_dev_type));
186 /* Number of Secondary Device Types */
187 wpabuf_put_u8(buf, p2p->cfg->num_sec_dev_types);
189 /* Secondary Device Type List */
190 for (i = 0; i < p2p->cfg->num_sec_dev_types; i++)
191 wpabuf_put_data(buf, p2p->cfg->sec_dev_type[i],
195 nlen = p2p->cfg->dev_name ? os_strlen(p2p->cfg->dev_name) : 0;
196 wpabuf_put_be16(buf, ATTR_DEV_NAME);
197 wpabuf_put_be16(buf, nlen);
198 wpabuf_put_data(buf, p2p->cfg->dev_name, nlen);
200 /* Update attribute length */
201 WPA_PUT_LE16(len, (u8 *) wpabuf_put(buf, 0) - len - 2);
202 wpa_printf(MSG_DEBUG, "P2P: * Device Info");
206 void p2p_buf_add_device_id(struct wpabuf *buf, const u8 *dev_addr)
209 wpabuf_put_u8(buf, P2P_ATTR_DEVICE_ID);
210 wpabuf_put_le16(buf, ETH_ALEN);
211 wpabuf_put_data(buf, dev_addr, ETH_ALEN);
212 wpa_printf(MSG_DEBUG, "P2P: * Device ID: " MACSTR, MAC2STR(dev_addr));
216 void p2p_buf_add_config_timeout(struct wpabuf *buf, u8 go_timeout,
219 /* Configuration Timeout */
220 wpabuf_put_u8(buf, P2P_ATTR_CONFIGURATION_TIMEOUT);
221 wpabuf_put_le16(buf, 2);
222 wpabuf_put_u8(buf, go_timeout);
223 wpabuf_put_u8(buf, client_timeout);
224 wpa_printf(MSG_DEBUG, "P2P: * Configuration Timeout: GO %d (*10ms) "
225 "client %d (*10ms)", go_timeout, client_timeout);
229 void p2p_buf_add_intended_addr(struct wpabuf *buf, const u8 *interface_addr)
231 /* Intended P2P Interface Address */
232 wpabuf_put_u8(buf, P2P_ATTR_INTENDED_INTERFACE_ADDR);
233 wpabuf_put_le16(buf, ETH_ALEN);
234 wpabuf_put_data(buf, interface_addr, ETH_ALEN);
235 wpa_printf(MSG_DEBUG, "P2P: * Intended P2P Interface Address " MACSTR,
236 MAC2STR(interface_addr));
240 void p2p_buf_add_group_bssid(struct wpabuf *buf, const u8 *bssid)
242 /* P2P Group BSSID */
243 wpabuf_put_u8(buf, P2P_ATTR_GROUP_BSSID);
244 wpabuf_put_le16(buf, ETH_ALEN);
245 wpabuf_put_data(buf, bssid, ETH_ALEN);
246 wpa_printf(MSG_DEBUG, "P2P: * P2P Group BSSID " MACSTR,
251 void p2p_buf_add_group_id(struct wpabuf *buf, const u8 *dev_addr,
252 const u8 *ssid, size_t ssid_len)
255 wpabuf_put_u8(buf, P2P_ATTR_GROUP_ID);
256 wpabuf_put_le16(buf, ETH_ALEN + ssid_len);
257 wpabuf_put_data(buf, dev_addr, ETH_ALEN);
258 wpabuf_put_data(buf, ssid, ssid_len);
259 wpa_printf(MSG_DEBUG, "P2P: * P2P Group ID " MACSTR,
264 void p2p_buf_add_invitation_flags(struct wpabuf *buf, u8 flags)
266 /* Invitation Flags */
267 wpabuf_put_u8(buf, P2P_ATTR_INVITATION_FLAGS);
268 wpabuf_put_le16(buf, 1);
269 wpabuf_put_u8(buf, flags);
270 wpa_printf(MSG_DEBUG, "P2P: * Invitation Flags: bitmap 0x%x", flags);
274 static void p2p_buf_add_noa_desc(struct wpabuf *buf, struct p2p_noa_desc *desc)
279 wpabuf_put_u8(buf, desc->count_type);
280 wpabuf_put_le32(buf, desc->duration);
281 wpabuf_put_le32(buf, desc->interval);
282 wpabuf_put_le32(buf, desc->start_time);
286 void p2p_buf_add_noa(struct wpabuf *buf, u8 noa_index, u8 opp_ps, u8 ctwindow,
287 struct p2p_noa_desc *desc1, struct p2p_noa_desc *desc2)
289 /* Notice of Absence */
290 wpabuf_put_u8(buf, P2P_ATTR_NOTICE_OF_ABSENCE);
291 wpabuf_put_le16(buf, 2 + (desc1 ? 13 : 0) + (desc2 ? 13 : 0));
292 wpabuf_put_u8(buf, noa_index);
293 wpabuf_put_u8(buf, (opp_ps ? 0x80 : 0) | (ctwindow & 0x7f));
294 p2p_buf_add_noa_desc(buf, desc1);
295 p2p_buf_add_noa_desc(buf, desc2);
296 wpa_printf(MSG_DEBUG, "P2P: * Notice of Absence");
300 void p2p_buf_add_ext_listen_timing(struct wpabuf *buf, u16 period,
303 /* Extended Listen Timing */
304 wpabuf_put_u8(buf, P2P_ATTR_EXT_LISTEN_TIMING);
305 wpabuf_put_le16(buf, 4);
306 wpabuf_put_le16(buf, period);
307 wpabuf_put_le16(buf, interval);
308 wpa_printf(MSG_DEBUG, "P2P: * Extended Listen Timing (period %u msec "
309 "interval %u msec)", period, interval);
313 void p2p_buf_add_p2p_interface(struct wpabuf *buf, struct p2p_data *p2p)
316 wpabuf_put_u8(buf, P2P_ATTR_INTERFACE);
317 wpabuf_put_le16(buf, ETH_ALEN + 1 + ETH_ALEN);
318 /* P2P Device address */
319 wpabuf_put_data(buf, p2p->cfg->dev_addr, ETH_ALEN);
321 * FIX: Fetch interface address list from driver. Do not include
322 * the P2P Device address if it is never used as interface address.
324 /* P2P Interface Address Count */
325 wpabuf_put_u8(buf, 1);
326 wpabuf_put_data(buf, p2p->cfg->dev_addr, ETH_ALEN);
330 static void p2p_add_wps_string(struct wpabuf *buf, enum wps_attribute attr,
335 wpabuf_put_be16(buf, attr);
336 len = val ? os_strlen(val) : 0;
337 #ifndef CONFIG_WPS_STRICT
340 * Some deployed WPS implementations fail to parse zeor-length
341 * attributes. As a workaround, send a space character if the
342 * device attribute string is empty.
344 wpabuf_put_be16(buf, 1);
345 wpabuf_put_u8(buf, ' ');
348 #endif /* CONFIG_WPS_STRICT */
349 wpabuf_put_be16(buf, len);
351 wpabuf_put_data(buf, val, len);
355 void p2p_build_wps_ie(struct p2p_data *p2p, struct wpabuf *buf, int pw_id,
361 wpabuf_put_u8(buf, WLAN_EID_VENDOR_SPECIFIC);
362 len = wpabuf_put(buf, 1);
363 wpabuf_put_be32(buf, WPS_DEV_OUI_WFA);
365 wps_build_version(buf);
368 wpabuf_put_be16(buf, ATTR_WPS_STATE);
369 wpabuf_put_be16(buf, 1);
370 wpabuf_put_u8(buf, WPS_STATE_NOT_CONFIGURED);
374 /* Device Password ID */
375 wpabuf_put_be16(buf, ATTR_DEV_PASSWORD_ID);
376 wpabuf_put_be16(buf, 2);
377 wpa_printf(MSG_DEBUG, "P2P: WPS IE Device Password ID: %d",
379 wpabuf_put_be16(buf, pw_id);
383 wpabuf_put_be16(buf, ATTR_RESPONSE_TYPE);
384 wpabuf_put_be16(buf, 1);
385 wpabuf_put_u8(buf, WPS_RESP_ENROLLEE_INFO);
387 wps_build_uuid_e(buf, p2p->cfg->uuid);
388 p2p_add_wps_string(buf, ATTR_MANUFACTURER,
389 p2p->cfg->manufacturer);
390 p2p_add_wps_string(buf, ATTR_MODEL_NAME, p2p->cfg->model_name);
391 p2p_add_wps_string(buf, ATTR_MODEL_NUMBER,
392 p2p->cfg->model_number);
393 p2p_add_wps_string(buf, ATTR_SERIAL_NUMBER,
394 p2p->cfg->serial_number);
396 wpabuf_put_be16(buf, ATTR_PRIMARY_DEV_TYPE);
397 wpabuf_put_be16(buf, WPS_DEV_TYPE_LEN);
398 wpabuf_put_data(buf, p2p->cfg->pri_dev_type, WPS_DEV_TYPE_LEN);
400 p2p_add_wps_string(buf, ATTR_DEV_NAME, p2p->cfg->dev_name);
402 wpabuf_put_be16(buf, ATTR_CONFIG_METHODS);
403 wpabuf_put_be16(buf, 2);
404 wpabuf_put_be16(buf, p2p->cfg->config_methods);
407 wps_build_wfa_ext(buf, 0, NULL, 0);
409 if (all_attr && p2p->cfg->num_sec_dev_types) {
410 wpabuf_put_be16(buf, ATTR_SECONDARY_DEV_TYPE_LIST);
411 wpabuf_put_be16(buf, WPS_DEV_TYPE_LEN *
412 p2p->cfg->num_sec_dev_types);
413 wpabuf_put_data(buf, p2p->cfg->sec_dev_type,
415 p2p->cfg->num_sec_dev_types);
418 /* Add the WPS vendor extensions */
419 for (i = 0; i < P2P_MAX_WPS_VENDOR_EXT; i++) {
420 if (p2p->wps_vendor_ext[i] == NULL)
422 if (wpabuf_tailroom(buf) <
423 4 + wpabuf_len(p2p->wps_vendor_ext[i]))
425 wpabuf_put_be16(buf, ATTR_VENDOR_EXT);
426 wpabuf_put_be16(buf, wpabuf_len(p2p->wps_vendor_ext[i]));
427 wpabuf_put_buf(buf, p2p->wps_vendor_ext[i]);
430 p2p_buf_update_ie_hdr(buf, len);