Dmitry Shmidt | 8d520ff | 2011-05-09 14:06:53 -0700 | [diff] [blame] | 1 | /* |
| 2 | * Wi-Fi Direct - P2P provision discovery |
| 3 | * Copyright (c) 2009-2010, Atheros Communications |
| 4 | * |
Dmitry Shmidt | c5ec7f5 | 2012-03-06 16:33:24 -0800 | [diff] [blame] | 5 | * This software may be distributed under the terms of the BSD license. |
| 6 | * See README for more details. |
Dmitry Shmidt | 8d520ff | 2011-05-09 14:06:53 -0700 | [diff] [blame] | 7 | */ |
| 8 | |
| 9 | #include "includes.h" |
| 10 | |
| 11 | #include "common.h" |
| 12 | #include "common/ieee802_11_defs.h" |
Dmitry Shmidt | 2e67f06 | 2014-07-16 09:55:28 -0700 | [diff] [blame] | 13 | #include "common/wpa_ctrl.h" |
Dmitry Shmidt | 8d520ff | 2011-05-09 14:06:53 -0700 | [diff] [blame] | 14 | #include "wps/wps_defs.h" |
| 15 | #include "p2p_i.h" |
| 16 | #include "p2p.h" |
| 17 | |
| 18 | |
Jouni Malinen | 75ecf52 | 2011-06-27 15:19:46 -0700 | [diff] [blame] | 19 | /* |
Dmitry Shmidt | 61d9df3 | 2012-08-29 16:22:06 -0700 | [diff] [blame] | 20 | * Number of retries to attempt for provision discovery requests |
| 21 | * in case the peer is not listening. |
Jouni Malinen | 75ecf52 | 2011-06-27 15:19:46 -0700 | [diff] [blame] | 22 | */ |
Dmitry Shmidt | d5e4923 | 2012-12-03 15:08:10 -0800 | [diff] [blame] | 23 | #define MAX_PROV_DISC_REQ_RETRIES 120 |
Jouni Malinen | 75ecf52 | 2011-06-27 15:19:46 -0700 | [diff] [blame] | 24 | |
| 25 | |
Dmitry Shmidt | 8d520ff | 2011-05-09 14:06:53 -0700 | [diff] [blame] | 26 | static void p2p_build_wps_ie_config_methods(struct wpabuf *buf, |
| 27 | u16 config_methods) |
| 28 | { |
| 29 | u8 *len; |
| 30 | wpabuf_put_u8(buf, WLAN_EID_VENDOR_SPECIFIC); |
| 31 | len = wpabuf_put(buf, 1); |
| 32 | wpabuf_put_be32(buf, WPS_DEV_OUI_WFA); |
| 33 | |
| 34 | /* Config Methods */ |
| 35 | wpabuf_put_be16(buf, ATTR_CONFIG_METHODS); |
| 36 | wpabuf_put_be16(buf, 2); |
| 37 | wpabuf_put_be16(buf, config_methods); |
| 38 | |
| 39 | p2p_buf_update_ie_hdr(buf, len); |
| 40 | } |
| 41 | |
| 42 | |
Dmitry Shmidt | d80a401 | 2015-11-05 16:35:40 -0800 | [diff] [blame] | 43 | static void p2ps_add_new_group_info(struct p2p_data *p2p, |
| 44 | struct p2p_device *dev, |
| 45 | struct wpabuf *buf) |
Dmitry Shmidt | 216983b | 2015-02-06 10:50:36 -0800 | [diff] [blame] | 46 | { |
| 47 | int found; |
| 48 | u8 intended_addr[ETH_ALEN]; |
Dmitry Shmidt | 9d9e602 | 2015-04-23 10:34:55 -0700 | [diff] [blame] | 49 | u8 ssid[SSID_MAX_LEN]; |
Dmitry Shmidt | 216983b | 2015-02-06 10:50:36 -0800 | [diff] [blame] | 50 | size_t ssid_len; |
| 51 | int group_iface; |
Dmitry Shmidt | d80a401 | 2015-11-05 16:35:40 -0800 | [diff] [blame] | 52 | unsigned int force_freq; |
Dmitry Shmidt | 216983b | 2015-02-06 10:50:36 -0800 | [diff] [blame] | 53 | |
| 54 | if (!p2p->cfg->get_go_info) |
| 55 | return; |
| 56 | |
| 57 | found = p2p->cfg->get_go_info( |
| 58 | p2p->cfg->cb_ctx, intended_addr, ssid, |
Dmitry Shmidt | d80a401 | 2015-11-05 16:35:40 -0800 | [diff] [blame] | 59 | &ssid_len, &group_iface, &force_freq); |
Dmitry Shmidt | 216983b | 2015-02-06 10:50:36 -0800 | [diff] [blame] | 60 | if (found) { |
Dmitry Shmidt | d80a401 | 2015-11-05 16:35:40 -0800 | [diff] [blame] | 61 | if (force_freq > 0) { |
| 62 | p2p->p2ps_prov->force_freq = force_freq; |
| 63 | p2p->p2ps_prov->pref_freq = 0; |
| 64 | |
| 65 | if (dev) |
| 66 | p2p_prepare_channel(p2p, dev, force_freq, 0, 0); |
| 67 | } |
Dmitry Shmidt | 216983b | 2015-02-06 10:50:36 -0800 | [diff] [blame] | 68 | p2p_buf_add_group_id(buf, p2p->cfg->dev_addr, |
| 69 | ssid, ssid_len); |
Dmitry Shmidt | d80a401 | 2015-11-05 16:35:40 -0800 | [diff] [blame] | 70 | |
| 71 | if (group_iface) |
| 72 | p2p_buf_add_intended_addr(buf, p2p->intended_addr); |
| 73 | else |
| 74 | p2p_buf_add_intended_addr(buf, intended_addr); |
Dmitry Shmidt | 216983b | 2015-02-06 10:50:36 -0800 | [diff] [blame] | 75 | } else { |
| 76 | if (!p2p->ssid_set) { |
| 77 | p2p_build_ssid(p2p, p2p->ssid, &p2p->ssid_len); |
| 78 | p2p->ssid_set = 1; |
| 79 | } |
| 80 | |
| 81 | /* Add pre-composed P2P Group ID */ |
| 82 | p2p_buf_add_group_id(buf, p2p->cfg->dev_addr, |
| 83 | p2p->ssid, p2p->ssid_len); |
| 84 | |
| 85 | if (group_iface) |
| 86 | p2p_buf_add_intended_addr( |
| 87 | buf, p2p->intended_addr); |
| 88 | else |
| 89 | p2p_buf_add_intended_addr( |
| 90 | buf, p2p->cfg->dev_addr); |
| 91 | } |
| 92 | } |
| 93 | |
| 94 | |
| 95 | static void p2ps_add_pd_req_attrs(struct p2p_data *p2p, struct p2p_device *dev, |
| 96 | struct wpabuf *buf, u16 config_methods) |
| 97 | { |
| 98 | struct p2ps_provision *prov = p2p->p2ps_prov; |
Dmitry Shmidt | d80a401 | 2015-11-05 16:35:40 -0800 | [diff] [blame] | 99 | struct p2ps_feature_capab fcap = { prov->cpt_mask, 0 }; |
Dmitry Shmidt | 216983b | 2015-02-06 10:50:36 -0800 | [diff] [blame] | 100 | int shared_group = 0; |
Dmitry Shmidt | 9d9e602 | 2015-04-23 10:34:55 -0700 | [diff] [blame] | 101 | u8 ssid[SSID_MAX_LEN]; |
Dmitry Shmidt | 216983b | 2015-02-06 10:50:36 -0800 | [diff] [blame] | 102 | size_t ssid_len; |
| 103 | u8 go_dev_addr[ETH_ALEN]; |
Dmitry Shmidt | d80a401 | 2015-11-05 16:35:40 -0800 | [diff] [blame] | 104 | u8 intended_addr[ETH_ALEN]; |
| 105 | int follow_on_req_fail = prov->status >= 0 && |
| 106 | prov->status != P2P_SC_SUCCESS_DEFERRED; |
Dmitry Shmidt | 216983b | 2015-02-06 10:50:36 -0800 | [diff] [blame] | 107 | |
| 108 | /* If we might be explicite group owner, add GO details */ |
Dmitry Shmidt | d80a401 | 2015-11-05 16:35:40 -0800 | [diff] [blame] | 109 | if (!follow_on_req_fail && |
| 110 | (prov->conncap & (P2PS_SETUP_GROUP_OWNER | P2PS_SETUP_NEW))) |
| 111 | p2ps_add_new_group_info(p2p, dev, buf); |
Dmitry Shmidt | 216983b | 2015-02-06 10:50:36 -0800 | [diff] [blame] | 112 | |
| 113 | if (prov->status >= 0) |
| 114 | p2p_buf_add_status(buf, (u8) prov->status); |
| 115 | else |
| 116 | prov->method = config_methods; |
| 117 | |
Dmitry Shmidt | d80a401 | 2015-11-05 16:35:40 -0800 | [diff] [blame] | 118 | if (!follow_on_req_fail) { |
| 119 | if (p2p->cfg->get_persistent_group) { |
| 120 | shared_group = p2p->cfg->get_persistent_group( |
| 121 | p2p->cfg->cb_ctx, dev->info.p2p_device_addr, |
| 122 | NULL, 0, go_dev_addr, ssid, &ssid_len, |
| 123 | intended_addr); |
| 124 | } |
Dmitry Shmidt | 216983b | 2015-02-06 10:50:36 -0800 | [diff] [blame] | 125 | |
Dmitry Shmidt | d80a401 | 2015-11-05 16:35:40 -0800 | [diff] [blame] | 126 | if (shared_group || |
| 127 | (prov->conncap & (P2PS_SETUP_CLIENT | P2PS_SETUP_NEW))) |
| 128 | p2p_buf_add_channel_list(buf, p2p->cfg->country, |
| 129 | &p2p->channels); |
Dmitry Shmidt | 216983b | 2015-02-06 10:50:36 -0800 | [diff] [blame] | 130 | |
Dmitry Shmidt | d80a401 | 2015-11-05 16:35:40 -0800 | [diff] [blame] | 131 | if ((shared_group && !is_zero_ether_addr(intended_addr)) || |
| 132 | (prov->conncap & (P2PS_SETUP_GROUP_OWNER | P2PS_SETUP_NEW))) |
Dmitry Shmidt | 216983b | 2015-02-06 10:50:36 -0800 | [diff] [blame] | 133 | p2p_buf_add_operating_channel(buf, p2p->cfg->country, |
| 134 | p2p->op_reg_class, |
| 135 | p2p->op_channel); |
Dmitry Shmidt | 216983b | 2015-02-06 10:50:36 -0800 | [diff] [blame] | 136 | } |
| 137 | |
Dmitry Shmidt | d80a401 | 2015-11-05 16:35:40 -0800 | [diff] [blame] | 138 | if (prov->status < 0 && prov->info[0]) |
Dmitry Shmidt | 216983b | 2015-02-06 10:50:36 -0800 | [diff] [blame] | 139 | p2p_buf_add_session_info(buf, prov->info); |
| 140 | |
Dmitry Shmidt | d80a401 | 2015-11-05 16:35:40 -0800 | [diff] [blame] | 141 | if (!follow_on_req_fail) |
| 142 | p2p_buf_add_connection_capability(buf, prov->conncap); |
Dmitry Shmidt | 216983b | 2015-02-06 10:50:36 -0800 | [diff] [blame] | 143 | |
| 144 | p2p_buf_add_advertisement_id(buf, prov->adv_id, prov->adv_mac); |
| 145 | |
Dmitry Shmidt | d80a401 | 2015-11-05 16:35:40 -0800 | [diff] [blame] | 146 | if (!follow_on_req_fail) { |
| 147 | if (shared_group || prov->conncap == P2PS_SETUP_NEW || |
| 148 | prov->conncap == |
| 149 | (P2PS_SETUP_GROUP_OWNER | P2PS_SETUP_NEW) || |
| 150 | prov->conncap == |
| 151 | (P2PS_SETUP_GROUP_OWNER | P2PS_SETUP_CLIENT)) { |
| 152 | /* Add Config Timeout */ |
| 153 | p2p_buf_add_config_timeout(buf, p2p->go_timeout, |
| 154 | p2p->client_timeout); |
| 155 | } |
Dmitry Shmidt | 216983b | 2015-02-06 10:50:36 -0800 | [diff] [blame] | 156 | |
Dmitry Shmidt | d80a401 | 2015-11-05 16:35:40 -0800 | [diff] [blame] | 157 | p2p_buf_add_listen_channel(buf, p2p->cfg->country, |
| 158 | p2p->cfg->reg_class, |
| 159 | p2p->cfg->channel); |
| 160 | } |
Dmitry Shmidt | 216983b | 2015-02-06 10:50:36 -0800 | [diff] [blame] | 161 | |
| 162 | p2p_buf_add_session_id(buf, prov->session_id, prov->session_mac); |
| 163 | |
Dmitry Shmidt | d80a401 | 2015-11-05 16:35:40 -0800 | [diff] [blame] | 164 | p2p_buf_add_feature_capability(buf, sizeof(fcap), (const u8 *) &fcap); |
Dmitry Shmidt | 216983b | 2015-02-06 10:50:36 -0800 | [diff] [blame] | 165 | |
Dmitry Shmidt | d80a401 | 2015-11-05 16:35:40 -0800 | [diff] [blame] | 166 | if (shared_group) { |
Dmitry Shmidt | 216983b | 2015-02-06 10:50:36 -0800 | [diff] [blame] | 167 | p2p_buf_add_persistent_group_info(buf, go_dev_addr, |
| 168 | ssid, ssid_len); |
Dmitry Shmidt | d80a401 | 2015-11-05 16:35:40 -0800 | [diff] [blame] | 169 | /* Add intended interface address if it is not added yet */ |
| 170 | if ((prov->conncap == P2PS_SETUP_NONE || |
| 171 | prov->conncap == P2PS_SETUP_CLIENT) && |
| 172 | !is_zero_ether_addr(intended_addr)) |
| 173 | p2p_buf_add_intended_addr(buf, intended_addr); |
| 174 | } |
Dmitry Shmidt | 216983b | 2015-02-06 10:50:36 -0800 | [diff] [blame] | 175 | } |
| 176 | |
| 177 | |
Dmitry Shmidt | 8d520ff | 2011-05-09 14:06:53 -0700 | [diff] [blame] | 178 | static struct wpabuf * p2p_build_prov_disc_req(struct p2p_data *p2p, |
Dmitry Shmidt | 216983b | 2015-02-06 10:50:36 -0800 | [diff] [blame] | 179 | struct p2p_device *dev, |
| 180 | int join) |
Dmitry Shmidt | 8d520ff | 2011-05-09 14:06:53 -0700 | [diff] [blame] | 181 | { |
| 182 | struct wpabuf *buf; |
| 183 | u8 *len; |
Dmitry Shmidt | 61d9df3 | 2012-08-29 16:22:06 -0700 | [diff] [blame] | 184 | size_t extra = 0; |
Dmitry Shmidt | 216983b | 2015-02-06 10:50:36 -0800 | [diff] [blame] | 185 | u8 dialog_token = dev->dialog_token; |
| 186 | u16 config_methods = dev->req_config_methods; |
| 187 | struct p2p_device *go = join ? dev : NULL; |
| 188 | u8 group_capab; |
Dmitry Shmidt | 8d520ff | 2011-05-09 14:06:53 -0700 | [diff] [blame] | 189 | |
Dmitry Shmidt | 61d9df3 | 2012-08-29 16:22:06 -0700 | [diff] [blame] | 190 | #ifdef CONFIG_WIFI_DISPLAY |
| 191 | if (p2p->wfd_ie_prov_disc_req) |
| 192 | extra = wpabuf_len(p2p->wfd_ie_prov_disc_req); |
| 193 | #endif /* CONFIG_WIFI_DISPLAY */ |
| 194 | |
Dmitry Shmidt | 2e67f06 | 2014-07-16 09:55:28 -0700 | [diff] [blame] | 195 | if (p2p->vendor_elem && p2p->vendor_elem[VENDOR_ELEM_P2P_PD_REQ]) |
| 196 | extra += wpabuf_len(p2p->vendor_elem[VENDOR_ELEM_P2P_PD_REQ]); |
| 197 | |
Dmitry Shmidt | 216983b | 2015-02-06 10:50:36 -0800 | [diff] [blame] | 198 | if (p2p->p2ps_prov) |
| 199 | extra += os_strlen(p2p->p2ps_prov->info) + 1 + |
| 200 | sizeof(struct p2ps_provision); |
| 201 | |
Dmitry Shmidt | 61d9df3 | 2012-08-29 16:22:06 -0700 | [diff] [blame] | 202 | buf = wpabuf_alloc(1000 + extra); |
Dmitry Shmidt | 8d520ff | 2011-05-09 14:06:53 -0700 | [diff] [blame] | 203 | if (buf == NULL) |
| 204 | return NULL; |
| 205 | |
| 206 | p2p_buf_add_public_action_hdr(buf, P2P_PROV_DISC_REQ, dialog_token); |
| 207 | |
| 208 | len = p2p_buf_add_ie_hdr(buf); |
Dmitry Shmidt | 216983b | 2015-02-06 10:50:36 -0800 | [diff] [blame] | 209 | |
| 210 | group_capab = 0; |
| 211 | if (p2p->p2ps_prov) { |
| 212 | group_capab |= P2P_GROUP_CAPAB_PERSISTENT_GROUP; |
| 213 | group_capab |= P2P_GROUP_CAPAB_PERSISTENT_RECONN; |
| 214 | if (p2p->cross_connect) |
| 215 | group_capab |= P2P_GROUP_CAPAB_CROSS_CONN; |
| 216 | if (p2p->cfg->p2p_intra_bss) |
| 217 | group_capab |= P2P_GROUP_CAPAB_INTRA_BSS_DIST; |
| 218 | } |
Dmitry Shmidt | 0494959 | 2012-07-19 12:16:46 -0700 | [diff] [blame] | 219 | p2p_buf_add_capability(buf, p2p->dev_capab & |
Dmitry Shmidt | 216983b | 2015-02-06 10:50:36 -0800 | [diff] [blame] | 220 | ~P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY, |
| 221 | group_capab); |
Dmitry Shmidt | 8d520ff | 2011-05-09 14:06:53 -0700 | [diff] [blame] | 222 | p2p_buf_add_device_info(buf, p2p, NULL); |
Dmitry Shmidt | 216983b | 2015-02-06 10:50:36 -0800 | [diff] [blame] | 223 | if (p2p->p2ps_prov) { |
| 224 | p2ps_add_pd_req_attrs(p2p, dev, buf, config_methods); |
| 225 | } else if (go) { |
Dmitry Shmidt | 8d520ff | 2011-05-09 14:06:53 -0700 | [diff] [blame] | 226 | p2p_buf_add_group_id(buf, go->info.p2p_device_addr, |
| 227 | go->oper_ssid, go->oper_ssid_len); |
| 228 | } |
| 229 | p2p_buf_update_ie_hdr(buf, len); |
| 230 | |
| 231 | /* WPS IE with Config Methods attribute */ |
| 232 | p2p_build_wps_ie_config_methods(buf, config_methods); |
| 233 | |
Dmitry Shmidt | 61d9df3 | 2012-08-29 16:22:06 -0700 | [diff] [blame] | 234 | #ifdef CONFIG_WIFI_DISPLAY |
| 235 | if (p2p->wfd_ie_prov_disc_req) |
| 236 | wpabuf_put_buf(buf, p2p->wfd_ie_prov_disc_req); |
| 237 | #endif /* CONFIG_WIFI_DISPLAY */ |
| 238 | |
Dmitry Shmidt | 2e67f06 | 2014-07-16 09:55:28 -0700 | [diff] [blame] | 239 | if (p2p->vendor_elem && p2p->vendor_elem[VENDOR_ELEM_P2P_PD_REQ]) |
| 240 | wpabuf_put_buf(buf, p2p->vendor_elem[VENDOR_ELEM_P2P_PD_REQ]); |
| 241 | |
Dmitry Shmidt | 8d520ff | 2011-05-09 14:06:53 -0700 | [diff] [blame] | 242 | return buf; |
| 243 | } |
| 244 | |
| 245 | |
| 246 | static struct wpabuf * p2p_build_prov_disc_resp(struct p2p_data *p2p, |
Dmitry Shmidt | 216983b | 2015-02-06 10:50:36 -0800 | [diff] [blame] | 247 | struct p2p_device *dev, |
Dmitry Shmidt | 8d520ff | 2011-05-09 14:06:53 -0700 | [diff] [blame] | 248 | u8 dialog_token, |
Dmitry Shmidt | 216983b | 2015-02-06 10:50:36 -0800 | [diff] [blame] | 249 | enum p2p_status_code status, |
Dmitry Shmidt | 61d9df3 | 2012-08-29 16:22:06 -0700 | [diff] [blame] | 250 | u16 config_methods, |
Dmitry Shmidt | 216983b | 2015-02-06 10:50:36 -0800 | [diff] [blame] | 251 | u32 adv_id, |
Dmitry Shmidt | 61d9df3 | 2012-08-29 16:22:06 -0700 | [diff] [blame] | 252 | const u8 *group_id, |
Dmitry Shmidt | 216983b | 2015-02-06 10:50:36 -0800 | [diff] [blame] | 253 | size_t group_id_len, |
| 254 | const u8 *persist_ssid, |
Dmitry Shmidt | d80a401 | 2015-11-05 16:35:40 -0800 | [diff] [blame] | 255 | size_t persist_ssid_len, |
| 256 | const u8 *fcap, |
| 257 | u16 fcap_len) |
Dmitry Shmidt | 8d520ff | 2011-05-09 14:06:53 -0700 | [diff] [blame] | 258 | { |
| 259 | struct wpabuf *buf; |
Dmitry Shmidt | 61d9df3 | 2012-08-29 16:22:06 -0700 | [diff] [blame] | 260 | size_t extra = 0; |
Dmitry Shmidt | 216983b | 2015-02-06 10:50:36 -0800 | [diff] [blame] | 261 | int persist = 0; |
Dmitry Shmidt | 8d520ff | 2011-05-09 14:06:53 -0700 | [diff] [blame] | 262 | |
Dmitry Shmidt | 61d9df3 | 2012-08-29 16:22:06 -0700 | [diff] [blame] | 263 | #ifdef CONFIG_WIFI_DISPLAY |
| 264 | struct wpabuf *wfd_ie = p2p->wfd_ie_prov_disc_resp; |
| 265 | if (wfd_ie && group_id) { |
| 266 | size_t i; |
| 267 | for (i = 0; i < p2p->num_groups; i++) { |
| 268 | struct p2p_group *g = p2p->groups[i]; |
| 269 | struct wpabuf *ie; |
| 270 | if (!p2p_group_is_group_id_match(g, group_id, |
| 271 | group_id_len)) |
| 272 | continue; |
| 273 | ie = p2p_group_get_wfd_ie(g); |
| 274 | if (ie) { |
| 275 | wfd_ie = ie; |
| 276 | break; |
| 277 | } |
| 278 | } |
| 279 | } |
| 280 | if (wfd_ie) |
| 281 | extra = wpabuf_len(wfd_ie); |
| 282 | #endif /* CONFIG_WIFI_DISPLAY */ |
| 283 | |
Dmitry Shmidt | 2e67f06 | 2014-07-16 09:55:28 -0700 | [diff] [blame] | 284 | if (p2p->vendor_elem && p2p->vendor_elem[VENDOR_ELEM_P2P_PD_RESP]) |
| 285 | extra += wpabuf_len(p2p->vendor_elem[VENDOR_ELEM_P2P_PD_RESP]); |
| 286 | |
Dmitry Shmidt | 216983b | 2015-02-06 10:50:36 -0800 | [diff] [blame] | 287 | buf = wpabuf_alloc(1000 + extra); |
Dmitry Shmidt | 8d520ff | 2011-05-09 14:06:53 -0700 | [diff] [blame] | 288 | if (buf == NULL) |
| 289 | return NULL; |
| 290 | |
| 291 | p2p_buf_add_public_action_hdr(buf, P2P_PROV_DISC_RESP, dialog_token); |
| 292 | |
Dmitry Shmidt | 216983b | 2015-02-06 10:50:36 -0800 | [diff] [blame] | 293 | /* Add P2P IE for P2PS */ |
| 294 | if (p2p->p2ps_prov && p2p->p2ps_prov->adv_id == adv_id) { |
Dmitry Shmidt | 216983b | 2015-02-06 10:50:36 -0800 | [diff] [blame] | 295 | u8 *len = p2p_buf_add_ie_hdr(buf); |
| 296 | struct p2ps_provision *prov = p2p->p2ps_prov; |
| 297 | u8 group_capab; |
Dmitry Shmidt | d80a401 | 2015-11-05 16:35:40 -0800 | [diff] [blame] | 298 | u8 conncap = 0; |
| 299 | |
| 300 | if (status == P2P_SC_SUCCESS || |
| 301 | status == P2P_SC_SUCCESS_DEFERRED) |
| 302 | conncap = prov->conncap; |
Dmitry Shmidt | 216983b | 2015-02-06 10:50:36 -0800 | [diff] [blame] | 303 | |
| 304 | if (!status && prov->status != -1) |
| 305 | status = prov->status; |
| 306 | |
| 307 | p2p_buf_add_status(buf, status); |
| 308 | group_capab = P2P_GROUP_CAPAB_PERSISTENT_GROUP | |
| 309 | P2P_GROUP_CAPAB_PERSISTENT_RECONN; |
| 310 | if (p2p->cross_connect) |
| 311 | group_capab |= P2P_GROUP_CAPAB_CROSS_CONN; |
| 312 | if (p2p->cfg->p2p_intra_bss) |
| 313 | group_capab |= P2P_GROUP_CAPAB_INTRA_BSS_DIST; |
| 314 | p2p_buf_add_capability(buf, p2p->dev_capab & |
| 315 | ~P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY, |
| 316 | group_capab); |
| 317 | p2p_buf_add_device_info(buf, p2p, NULL); |
| 318 | |
Dmitry Shmidt | d80a401 | 2015-11-05 16:35:40 -0800 | [diff] [blame] | 319 | if (persist_ssid && p2p->cfg->get_persistent_group && dev && |
Dmitry Shmidt | 216983b | 2015-02-06 10:50:36 -0800 | [diff] [blame] | 320 | (status == P2P_SC_SUCCESS || |
| 321 | status == P2P_SC_SUCCESS_DEFERRED)) { |
Dmitry Shmidt | 9d9e602 | 2015-04-23 10:34:55 -0700 | [diff] [blame] | 322 | u8 ssid[SSID_MAX_LEN]; |
Dmitry Shmidt | 216983b | 2015-02-06 10:50:36 -0800 | [diff] [blame] | 323 | size_t ssid_len; |
| 324 | u8 go_dev_addr[ETH_ALEN]; |
Dmitry Shmidt | d80a401 | 2015-11-05 16:35:40 -0800 | [diff] [blame] | 325 | u8 intended_addr[ETH_ALEN]; |
Dmitry Shmidt | 216983b | 2015-02-06 10:50:36 -0800 | [diff] [blame] | 326 | |
| 327 | persist = p2p->cfg->get_persistent_group( |
| 328 | p2p->cfg->cb_ctx, |
| 329 | dev->info.p2p_device_addr, |
| 330 | persist_ssid, persist_ssid_len, go_dev_addr, |
Dmitry Shmidt | d80a401 | 2015-11-05 16:35:40 -0800 | [diff] [blame] | 331 | ssid, &ssid_len, intended_addr); |
| 332 | if (persist) { |
Dmitry Shmidt | 216983b | 2015-02-06 10:50:36 -0800 | [diff] [blame] | 333 | p2p_buf_add_persistent_group_info( |
| 334 | buf, go_dev_addr, ssid, ssid_len); |
Dmitry Shmidt | d80a401 | 2015-11-05 16:35:40 -0800 | [diff] [blame] | 335 | if (!is_zero_ether_addr(intended_addr)) |
| 336 | p2p_buf_add_intended_addr( |
| 337 | buf, intended_addr); |
| 338 | } |
Dmitry Shmidt | 216983b | 2015-02-06 10:50:36 -0800 | [diff] [blame] | 339 | } |
| 340 | |
Dmitry Shmidt | d80a401 | 2015-11-05 16:35:40 -0800 | [diff] [blame] | 341 | if (!persist && (conncap & P2PS_SETUP_GROUP_OWNER)) |
| 342 | p2ps_add_new_group_info(p2p, dev, buf); |
Dmitry Shmidt | 216983b | 2015-02-06 10:50:36 -0800 | [diff] [blame] | 343 | |
| 344 | /* Add Operating Channel if conncap indicates GO */ |
Dmitry Shmidt | d80a401 | 2015-11-05 16:35:40 -0800 | [diff] [blame] | 345 | if (persist || (conncap & P2PS_SETUP_GROUP_OWNER)) { |
Dmitry Shmidt | 216983b | 2015-02-06 10:50:36 -0800 | [diff] [blame] | 346 | if (p2p->op_reg_class && p2p->op_channel) |
| 347 | p2p_buf_add_operating_channel( |
| 348 | buf, p2p->cfg->country, |
| 349 | p2p->op_reg_class, |
| 350 | p2p->op_channel); |
| 351 | else |
| 352 | p2p_buf_add_operating_channel( |
| 353 | buf, p2p->cfg->country, |
| 354 | p2p->cfg->op_reg_class, |
| 355 | p2p->cfg->op_channel); |
| 356 | } |
| 357 | |
Dmitry Shmidt | d80a401 | 2015-11-05 16:35:40 -0800 | [diff] [blame] | 358 | if (persist || |
| 359 | (conncap & (P2PS_SETUP_CLIENT | P2PS_SETUP_GROUP_OWNER))) |
| 360 | p2p_buf_add_channel_list(buf, p2p->cfg->country, |
| 361 | &p2p->channels); |
Dmitry Shmidt | 216983b | 2015-02-06 10:50:36 -0800 | [diff] [blame] | 362 | |
Dmitry Shmidt | d80a401 | 2015-11-05 16:35:40 -0800 | [diff] [blame] | 363 | if (!persist && conncap) |
| 364 | p2p_buf_add_connection_capability(buf, conncap); |
Dmitry Shmidt | 216983b | 2015-02-06 10:50:36 -0800 | [diff] [blame] | 365 | |
| 366 | p2p_buf_add_advertisement_id(buf, adv_id, prov->adv_mac); |
| 367 | |
Dmitry Shmidt | d80a401 | 2015-11-05 16:35:40 -0800 | [diff] [blame] | 368 | if (persist || |
| 369 | (conncap & (P2PS_SETUP_CLIENT | P2PS_SETUP_GROUP_OWNER))) |
| 370 | p2p_buf_add_config_timeout(buf, p2p->go_timeout, |
| 371 | p2p->client_timeout); |
Dmitry Shmidt | 216983b | 2015-02-06 10:50:36 -0800 | [diff] [blame] | 372 | |
| 373 | p2p_buf_add_session_id(buf, prov->session_id, |
| 374 | prov->session_mac); |
| 375 | |
Dmitry Shmidt | d80a401 | 2015-11-05 16:35:40 -0800 | [diff] [blame] | 376 | p2p_buf_add_feature_capability(buf, fcap_len, fcap); |
Dmitry Shmidt | 216983b | 2015-02-06 10:50:36 -0800 | [diff] [blame] | 377 | p2p_buf_update_ie_hdr(buf, len); |
| 378 | } else if (status != P2P_SC_SUCCESS || adv_id) { |
| 379 | u8 *len = p2p_buf_add_ie_hdr(buf); |
| 380 | |
| 381 | p2p_buf_add_status(buf, status); |
| 382 | |
| 383 | if (p2p->p2ps_prov) |
| 384 | p2p_buf_add_advertisement_id(buf, adv_id, |
| 385 | p2p->p2ps_prov->adv_mac); |
| 386 | |
| 387 | p2p_buf_update_ie_hdr(buf, len); |
| 388 | } |
| 389 | |
Dmitry Shmidt | 8d520ff | 2011-05-09 14:06:53 -0700 | [diff] [blame] | 390 | /* WPS IE with Config Methods attribute */ |
| 391 | p2p_build_wps_ie_config_methods(buf, config_methods); |
| 392 | |
Dmitry Shmidt | 61d9df3 | 2012-08-29 16:22:06 -0700 | [diff] [blame] | 393 | #ifdef CONFIG_WIFI_DISPLAY |
| 394 | if (wfd_ie) |
| 395 | wpabuf_put_buf(buf, wfd_ie); |
| 396 | #endif /* CONFIG_WIFI_DISPLAY */ |
| 397 | |
Dmitry Shmidt | 2e67f06 | 2014-07-16 09:55:28 -0700 | [diff] [blame] | 398 | if (p2p->vendor_elem && p2p->vendor_elem[VENDOR_ELEM_P2P_PD_RESP]) |
| 399 | wpabuf_put_buf(buf, p2p->vendor_elem[VENDOR_ELEM_P2P_PD_RESP]); |
| 400 | |
Dmitry Shmidt | 8d520ff | 2011-05-09 14:06:53 -0700 | [diff] [blame] | 401 | return buf; |
| 402 | } |
| 403 | |
| 404 | |
Dmitry Shmidt | 216983b | 2015-02-06 10:50:36 -0800 | [diff] [blame] | 405 | static int p2ps_setup_p2ps_prov(struct p2p_data *p2p, u32 adv_id, |
| 406 | u32 session_id, u16 method, |
| 407 | const u8 *session_mac, const u8 *adv_mac) |
| 408 | { |
| 409 | struct p2ps_provision *tmp; |
| 410 | |
| 411 | if (!p2p->p2ps_prov) { |
| 412 | p2p->p2ps_prov = os_zalloc(sizeof(struct p2ps_provision) + 1); |
| 413 | if (!p2p->p2ps_prov) |
| 414 | return -1; |
| 415 | } else { |
| 416 | os_memset(p2p->p2ps_prov, 0, sizeof(struct p2ps_provision) + 1); |
| 417 | } |
| 418 | |
| 419 | tmp = p2p->p2ps_prov; |
| 420 | tmp->adv_id = adv_id; |
| 421 | tmp->session_id = session_id; |
| 422 | tmp->method = method; |
| 423 | os_memcpy(tmp->session_mac, session_mac, ETH_ALEN); |
| 424 | os_memcpy(tmp->adv_mac, adv_mac, ETH_ALEN); |
| 425 | tmp->info[0] = '\0'; |
| 426 | |
| 427 | return 0; |
| 428 | } |
| 429 | |
| 430 | |
Dmitry Shmidt | d80a401 | 2015-11-05 16:35:40 -0800 | [diff] [blame] | 431 | static u8 p2ps_own_preferred_cpt(const u8 *cpt_priority, u8 req_cpt_mask) |
| 432 | { |
| 433 | int i; |
| 434 | |
| 435 | for (i = 0; cpt_priority[i]; i++) |
| 436 | if (req_cpt_mask & cpt_priority[i]) |
| 437 | return cpt_priority[i]; |
| 438 | |
| 439 | return 0; |
| 440 | } |
| 441 | |
| 442 | |
| 443 | /* Check if the message contains a valid P2PS PD Request */ |
| 444 | static int p2ps_validate_pd_req(struct p2p_data *p2p, struct p2p_message *msg, |
| 445 | const u8 *addr) |
| 446 | { |
| 447 | u8 group_id = 0; |
| 448 | u8 intended_addr = 0; |
| 449 | u8 operating_channel = 0; |
| 450 | u8 channel_list = 0; |
| 451 | u8 config_timeout = 0; |
| 452 | u8 listen_channel = 0; |
| 453 | |
| 454 | #define P2PS_PD_REQ_CHECK(_val, _attr) \ |
| 455 | do { \ |
| 456 | if ((_val) && !msg->_attr) { \ |
| 457 | p2p_dbg(p2p, "Not P2PS PD Request. Missing %s", #_attr); \ |
| 458 | return -1; \ |
| 459 | } \ |
| 460 | } while (0) |
| 461 | |
| 462 | P2PS_PD_REQ_CHECK(1, adv_id); |
| 463 | P2PS_PD_REQ_CHECK(1, session_id); |
| 464 | P2PS_PD_REQ_CHECK(1, session_mac); |
| 465 | P2PS_PD_REQ_CHECK(1, adv_mac); |
| 466 | P2PS_PD_REQ_CHECK(1, capability); |
| 467 | P2PS_PD_REQ_CHECK(1, p2p_device_info); |
| 468 | P2PS_PD_REQ_CHECK(1, feature_cap); |
| 469 | |
| 470 | /* |
| 471 | * We don't need to check Connection Capability, Persistent Group, |
| 472 | * and related attributes for follow-on PD Request with a status |
| 473 | * other than SUCCESS_DEFERRED. |
| 474 | */ |
| 475 | if (msg->status && *msg->status != P2P_SC_SUCCESS_DEFERRED) |
| 476 | return 0; |
| 477 | |
| 478 | P2PS_PD_REQ_CHECK(1, conn_cap); |
| 479 | |
| 480 | /* |
| 481 | * Note 1: A feature capability attribute structure can be changed |
| 482 | * in the future. The assumption is that such modifications are |
| 483 | * backward compatible, therefore we allow processing of msg.feature_cap |
| 484 | * exceeding the size of the p2ps_feature_capab structure. |
| 485 | * Note 2: Verification of msg.feature_cap_len below has to be changed |
| 486 | * to allow 2 byte feature capability processing if |
| 487 | * struct p2ps_feature_capab is extended to include additional fields |
| 488 | * and it affects the structure size. |
| 489 | */ |
| 490 | if (msg->feature_cap_len < sizeof(struct p2ps_feature_capab)) { |
| 491 | p2p_dbg(p2p, "P2PS: Invalid feature capability len"); |
| 492 | return -1; |
| 493 | } |
| 494 | |
| 495 | switch (*msg->conn_cap) { |
| 496 | case P2PS_SETUP_NEW: |
| 497 | group_id = 1; |
| 498 | intended_addr = 1; |
| 499 | operating_channel = 1; |
| 500 | channel_list = 1; |
| 501 | config_timeout = 1; |
| 502 | listen_channel = 1; |
| 503 | break; |
| 504 | case P2PS_SETUP_CLIENT: |
| 505 | channel_list = 1; |
| 506 | listen_channel = 1; |
| 507 | break; |
| 508 | case P2PS_SETUP_GROUP_OWNER: |
| 509 | group_id = 1; |
| 510 | intended_addr = 1; |
| 511 | operating_channel = 1; |
| 512 | break; |
| 513 | case P2PS_SETUP_NEW | P2PS_SETUP_GROUP_OWNER: |
| 514 | group_id = 1; |
| 515 | operating_channel = 1; |
| 516 | intended_addr = 1; |
| 517 | channel_list = 1; |
| 518 | config_timeout = 1; |
| 519 | break; |
| 520 | case P2PS_SETUP_CLIENT | P2PS_SETUP_GROUP_OWNER: |
| 521 | group_id = 1; |
| 522 | intended_addr = 1; |
| 523 | operating_channel = 1; |
| 524 | channel_list = 1; |
| 525 | config_timeout = 1; |
| 526 | break; |
| 527 | default: |
| 528 | p2p_dbg(p2p, "Invalid P2PS PD connection capability"); |
| 529 | return -1; |
| 530 | } |
| 531 | |
| 532 | if (msg->persistent_dev) { |
| 533 | channel_list = 1; |
| 534 | config_timeout = 1; |
| 535 | if (os_memcmp(msg->persistent_dev, addr, ETH_ALEN) == 0) { |
| 536 | intended_addr = 1; |
| 537 | operating_channel = 1; |
| 538 | } |
| 539 | } |
| 540 | |
| 541 | P2PS_PD_REQ_CHECK(group_id, group_id); |
| 542 | P2PS_PD_REQ_CHECK(intended_addr, intended_addr); |
| 543 | P2PS_PD_REQ_CHECK(operating_channel, operating_channel); |
| 544 | P2PS_PD_REQ_CHECK(channel_list, channel_list); |
| 545 | P2PS_PD_REQ_CHECK(config_timeout, config_timeout); |
| 546 | P2PS_PD_REQ_CHECK(listen_channel, listen_channel); |
| 547 | |
| 548 | #undef P2PS_PD_REQ_CHECK |
| 549 | |
| 550 | return 0; |
| 551 | } |
| 552 | |
| 553 | |
Dmitry Shmidt | 8d520ff | 2011-05-09 14:06:53 -0700 | [diff] [blame] | 554 | void p2p_process_prov_disc_req(struct p2p_data *p2p, const u8 *sa, |
| 555 | const u8 *data, size_t len, int rx_freq) |
| 556 | { |
| 557 | struct p2p_message msg; |
| 558 | struct p2p_device *dev; |
| 559 | int freq; |
Dmitry Shmidt | 216983b | 2015-02-06 10:50:36 -0800 | [diff] [blame] | 560 | enum p2p_status_code reject = P2P_SC_FAIL_INCOMPATIBLE_PARAMS; |
Dmitry Shmidt | 8d520ff | 2011-05-09 14:06:53 -0700 | [diff] [blame] | 561 | struct wpabuf *resp; |
Dmitry Shmidt | 216983b | 2015-02-06 10:50:36 -0800 | [diff] [blame] | 562 | u32 adv_id = 0; |
| 563 | struct p2ps_advertisement *p2ps_adv = NULL; |
| 564 | u8 conncap = P2PS_SETUP_NEW; |
| 565 | u8 auto_accept = 0; |
| 566 | u32 session_id = 0; |
Dmitry Shmidt | d80a401 | 2015-11-05 16:35:40 -0800 | [diff] [blame] | 567 | u8 session_mac[ETH_ALEN] = { 0, 0, 0, 0, 0, 0 }; |
| 568 | u8 adv_mac[ETH_ALEN] = { 0, 0, 0, 0, 0, 0 }; |
| 569 | const u8 *group_mac; |
Dmitry Shmidt | 216983b | 2015-02-06 10:50:36 -0800 | [diff] [blame] | 570 | int passwd_id = DEV_PW_DEFAULT; |
| 571 | u16 config_methods; |
Dmitry Shmidt | d80a401 | 2015-11-05 16:35:40 -0800 | [diff] [blame] | 572 | u16 allowed_config_methods = WPS_CONFIG_DISPLAY | WPS_CONFIG_KEYPAD; |
| 573 | struct p2ps_feature_capab resp_fcap = { 0, 0 }; |
| 574 | struct p2ps_feature_capab *req_fcap = NULL; |
| 575 | u8 remote_conncap; |
| 576 | u16 method; |
Dmitry Shmidt | 8d520ff | 2011-05-09 14:06:53 -0700 | [diff] [blame] | 577 | |
| 578 | if (p2p_parse(data, len, &msg)) |
| 579 | return; |
| 580 | |
Dmitry Shmidt | b6e9aaf | 2013-05-20 14:49:44 -0700 | [diff] [blame] | 581 | p2p_dbg(p2p, "Received Provision Discovery Request from " MACSTR |
Dmitry Shmidt | 8d520ff | 2011-05-09 14:06:53 -0700 | [diff] [blame] | 582 | " with config methods 0x%x (freq=%d)", |
| 583 | MAC2STR(sa), msg.wps_config_methods, rx_freq); |
Dmitry Shmidt | d80a401 | 2015-11-05 16:35:40 -0800 | [diff] [blame] | 584 | group_mac = msg.intended_addr; |
Dmitry Shmidt | 8d520ff | 2011-05-09 14:06:53 -0700 | [diff] [blame] | 585 | |
| 586 | dev = p2p_get_device(p2p, sa); |
Dmitry Shmidt | 1f69aa5 | 2012-01-24 16:10:04 -0800 | [diff] [blame] | 587 | if (dev == NULL || (dev->flags & P2P_DEV_PROBE_REQ_ONLY)) { |
Dmitry Shmidt | b6e9aaf | 2013-05-20 14:49:44 -0700 | [diff] [blame] | 588 | p2p_dbg(p2p, "Provision Discovery Request from unknown peer " |
| 589 | MACSTR, MAC2STR(sa)); |
Dmitry Shmidt | a54fa5f | 2013-01-15 13:53:35 -0800 | [diff] [blame] | 590 | |
Dmitry Shmidt | f862328 | 2013-02-20 14:34:59 -0800 | [diff] [blame] | 591 | if (p2p_add_device(p2p, sa, rx_freq, NULL, 0, data + 1, len - 1, |
Dmitry Shmidt | a54fa5f | 2013-01-15 13:53:35 -0800 | [diff] [blame] | 592 | 0)) { |
Dmitry Shmidt | b6e9aaf | 2013-05-20 14:49:44 -0700 | [diff] [blame] | 593 | p2p_dbg(p2p, "Provision Discovery Request add device failed " |
| 594 | MACSTR, MAC2STR(sa)); |
Dmitry Shmidt | d80a401 | 2015-11-05 16:35:40 -0800 | [diff] [blame] | 595 | goto out; |
| 596 | } |
| 597 | |
Hai Shalom | c09ec81 | 2021-03-01 08:11:54 -0800 | [diff] [blame^] | 598 | dev = p2p_get_device(p2p, sa); |
Dmitry Shmidt | d80a401 | 2015-11-05 16:35:40 -0800 | [diff] [blame] | 599 | if (!dev) { |
Hai Shalom | c09ec81 | 2021-03-01 08:11:54 -0800 | [diff] [blame^] | 600 | p2p_dbg(p2p, |
| 601 | "Provision Discovery device not found " |
| 602 | MACSTR, MAC2STR(sa)); |
| 603 | goto out; |
Dmitry Shmidt | 8d520ff | 2011-05-09 14:06:53 -0700 | [diff] [blame] | 604 | } |
Dmitry Shmidt | 61d9df3 | 2012-08-29 16:22:06 -0700 | [diff] [blame] | 605 | } else if (msg.wfd_subelems) { |
| 606 | wpabuf_free(dev->info.wfd_subelems); |
| 607 | dev->info.wfd_subelems = wpabuf_dup(msg.wfd_subelems); |
Dmitry Shmidt | 8d520ff | 2011-05-09 14:06:53 -0700 | [diff] [blame] | 608 | } |
| 609 | |
Dmitry Shmidt | d80a401 | 2015-11-05 16:35:40 -0800 | [diff] [blame] | 610 | if (!msg.adv_id) { |
| 611 | allowed_config_methods |= WPS_CONFIG_PUSHBUTTON; |
| 612 | if (!(msg.wps_config_methods & allowed_config_methods)) { |
| 613 | p2p_dbg(p2p, |
| 614 | "Unsupported Config Methods in Provision Discovery Request"); |
Dmitry Shmidt | 0494959 | 2012-07-19 12:16:46 -0700 | [diff] [blame] | 615 | goto out; |
| 616 | } |
Dmitry Shmidt | 0494959 | 2012-07-19 12:16:46 -0700 | [diff] [blame] | 617 | |
Dmitry Shmidt | d80a401 | 2015-11-05 16:35:40 -0800 | [diff] [blame] | 618 | /* Legacy (non-P2PS) - Unknown groups allowed for P2PS */ |
| 619 | if (msg.group_id) { |
| 620 | size_t i; |
Dmitry Shmidt | 216983b | 2015-02-06 10:50:36 -0800 | [diff] [blame] | 621 | |
Dmitry Shmidt | d80a401 | 2015-11-05 16:35:40 -0800 | [diff] [blame] | 622 | for (i = 0; i < p2p->num_groups; i++) { |
| 623 | if (p2p_group_is_group_id_match( |
| 624 | p2p->groups[i], |
| 625 | msg.group_id, msg.group_id_len)) |
| 626 | break; |
| 627 | } |
| 628 | if (i == p2p->num_groups) { |
| 629 | p2p_dbg(p2p, |
| 630 | "PD request for unknown P2P Group ID - reject"); |
| 631 | goto out; |
| 632 | } |
Dmitry Shmidt | 216983b | 2015-02-06 10:50:36 -0800 | [diff] [blame] | 633 | } |
Dmitry Shmidt | d80a401 | 2015-11-05 16:35:40 -0800 | [diff] [blame] | 634 | } else { |
| 635 | allowed_config_methods |= WPS_CONFIG_P2PS; |
Dmitry Shmidt | 8d520ff | 2011-05-09 14:06:53 -0700 | [diff] [blame] | 636 | |
Dmitry Shmidt | d80a401 | 2015-11-05 16:35:40 -0800 | [diff] [blame] | 637 | /* |
| 638 | * Set adv_id here, so in case of an error, a P2PS PD Response |
| 639 | * will be sent. |
| 640 | */ |
| 641 | adv_id = WPA_GET_LE32(msg.adv_id); |
| 642 | if (p2ps_validate_pd_req(p2p, &msg, sa) < 0) { |
| 643 | reject = P2P_SC_FAIL_INVALID_PARAMS; |
| 644 | goto out; |
| 645 | } |
Dmitry Shmidt | 216983b | 2015-02-06 10:50:36 -0800 | [diff] [blame] | 646 | |
Dmitry Shmidt | d80a401 | 2015-11-05 16:35:40 -0800 | [diff] [blame] | 647 | req_fcap = (struct p2ps_feature_capab *) msg.feature_cap; |
Dmitry Shmidt | 216983b | 2015-02-06 10:50:36 -0800 | [diff] [blame] | 648 | |
| 649 | os_memcpy(session_mac, msg.session_mac, ETH_ALEN); |
| 650 | os_memcpy(adv_mac, msg.adv_mac, ETH_ALEN); |
| 651 | |
| 652 | session_id = WPA_GET_LE32(msg.session_id); |
Dmitry Shmidt | 216983b | 2015-02-06 10:50:36 -0800 | [diff] [blame] | 653 | |
| 654 | if (msg.conn_cap) |
| 655 | conncap = *msg.conn_cap; |
Dmitry Shmidt | 216983b | 2015-02-06 10:50:36 -0800 | [diff] [blame] | 656 | |
Dmitry Shmidt | d80a401 | 2015-11-05 16:35:40 -0800 | [diff] [blame] | 657 | /* |
| 658 | * We need to verify a P2PS config methog in an initial PD |
| 659 | * request or in a follow-on PD request with the status |
| 660 | * SUCCESS_DEFERRED. |
| 661 | */ |
| 662 | if ((!msg.status || *msg.status == P2P_SC_SUCCESS_DEFERRED) && |
| 663 | !(msg.wps_config_methods & allowed_config_methods)) { |
| 664 | p2p_dbg(p2p, |
| 665 | "Unsupported Config Methods in Provision Discovery Request"); |
| 666 | goto out; |
| 667 | } |
Dmitry Shmidt | 216983b | 2015-02-06 10:50:36 -0800 | [diff] [blame] | 668 | |
Dmitry Shmidt | d80a401 | 2015-11-05 16:35:40 -0800 | [diff] [blame] | 669 | /* |
| 670 | * TODO: since we don't support multiple PD, reject PD request |
| 671 | * if we are in the middle of P2PS PD with some other peer |
| 672 | */ |
| 673 | } |
Dmitry Shmidt | 216983b | 2015-02-06 10:50:36 -0800 | [diff] [blame] | 674 | |
Dmitry Shmidt | d80a401 | 2015-11-05 16:35:40 -0800 | [diff] [blame] | 675 | dev->flags &= ~(P2P_DEV_PD_PEER_DISPLAY | |
| 676 | P2P_DEV_PD_PEER_KEYPAD | |
| 677 | P2P_DEV_PD_PEER_P2PS); |
Dmitry Shmidt | 216983b | 2015-02-06 10:50:36 -0800 | [diff] [blame] | 678 | |
Dmitry Shmidt | d80a401 | 2015-11-05 16:35:40 -0800 | [diff] [blame] | 679 | if (msg.wps_config_methods & WPS_CONFIG_DISPLAY) { |
| 680 | p2p_dbg(p2p, "Peer " MACSTR |
| 681 | " requested us to show a PIN on display", MAC2STR(sa)); |
| 682 | dev->flags |= P2P_DEV_PD_PEER_KEYPAD; |
| 683 | passwd_id = DEV_PW_USER_SPECIFIED; |
| 684 | } else if (msg.wps_config_methods & WPS_CONFIG_KEYPAD) { |
| 685 | p2p_dbg(p2p, "Peer " MACSTR |
| 686 | " requested us to write its PIN using keypad", |
| 687 | MAC2STR(sa)); |
| 688 | dev->flags |= P2P_DEV_PD_PEER_DISPLAY; |
| 689 | passwd_id = DEV_PW_REGISTRAR_SPECIFIED; |
| 690 | } else if (msg.wps_config_methods & WPS_CONFIG_P2PS) { |
| 691 | p2p_dbg(p2p, "Peer " MACSTR " requesting P2PS PIN", |
| 692 | MAC2STR(sa)); |
| 693 | dev->flags |= P2P_DEV_PD_PEER_P2PS; |
| 694 | passwd_id = DEV_PW_P2PS_DEFAULT; |
| 695 | } |
Dmitry Shmidt | 216983b | 2015-02-06 10:50:36 -0800 | [diff] [blame] | 696 | |
Dmitry Shmidt | d80a401 | 2015-11-05 16:35:40 -0800 | [diff] [blame] | 697 | /* Remove stale persistent groups */ |
| 698 | if (p2p->cfg->remove_stale_groups) { |
| 699 | p2p->cfg->remove_stale_groups( |
| 700 | p2p->cfg->cb_ctx, dev->info.p2p_device_addr, |
| 701 | msg.persistent_dev, |
| 702 | msg.persistent_ssid, msg.persistent_ssid_len); |
| 703 | } |
Dmitry Shmidt | 216983b | 2015-02-06 10:50:36 -0800 | [diff] [blame] | 704 | |
Dmitry Shmidt | d80a401 | 2015-11-05 16:35:40 -0800 | [diff] [blame] | 705 | reject = P2P_SC_SUCCESS; |
Dmitry Shmidt | 216983b | 2015-02-06 10:50:36 -0800 | [diff] [blame] | 706 | |
Dmitry Shmidt | d80a401 | 2015-11-05 16:35:40 -0800 | [diff] [blame] | 707 | /* |
| 708 | * End of a legacy P2P PD Request processing, from this point continue |
| 709 | * with P2PS one. |
| 710 | */ |
| 711 | if (!msg.adv_id) |
| 712 | goto out; |
Dmitry Shmidt | 216983b | 2015-02-06 10:50:36 -0800 | [diff] [blame] | 713 | |
Dmitry Shmidt | d80a401 | 2015-11-05 16:35:40 -0800 | [diff] [blame] | 714 | remote_conncap = conncap; |
Dmitry Shmidt | 216983b | 2015-02-06 10:50:36 -0800 | [diff] [blame] | 715 | |
Dmitry Shmidt | d80a401 | 2015-11-05 16:35:40 -0800 | [diff] [blame] | 716 | if (!msg.status) { |
| 717 | unsigned int forced_freq, pref_freq; |
| 718 | |
| 719 | if (os_memcmp(p2p->cfg->dev_addr, msg.adv_mac, ETH_ALEN)) { |
| 720 | p2p_dbg(p2p, |
| 721 | "P2PS PD adv mac does not match the local one"); |
Dmitry Shmidt | 216983b | 2015-02-06 10:50:36 -0800 | [diff] [blame] | 722 | reject = P2P_SC_FAIL_INCOMPATIBLE_PARAMS; |
| 723 | goto out; |
| 724 | } |
| 725 | |
Dmitry Shmidt | d80a401 | 2015-11-05 16:35:40 -0800 | [diff] [blame] | 726 | p2ps_adv = p2p_service_p2ps_id(p2p, adv_id); |
| 727 | if (!p2ps_adv) { |
| 728 | p2p_dbg(p2p, "P2PS PD invalid adv_id=0x%X", adv_id); |
| 729 | reject = P2P_SC_FAIL_INCOMPATIBLE_PARAMS; |
| 730 | goto out; |
| 731 | } |
| 732 | p2p_dbg(p2p, "adv_id: 0x%X, p2ps_adv: %p", adv_id, p2ps_adv); |
Dmitry Shmidt | 216983b | 2015-02-06 10:50:36 -0800 | [diff] [blame] | 733 | |
Dmitry Shmidt | d80a401 | 2015-11-05 16:35:40 -0800 | [diff] [blame] | 734 | auto_accept = p2ps_adv->auto_accept; |
| 735 | conncap = p2p->cfg->p2ps_group_capability(p2p->cfg->cb_ctx, |
| 736 | conncap, auto_accept, |
| 737 | &forced_freq, |
| 738 | &pref_freq); |
| 739 | |
| 740 | p2p_dbg(p2p, "Conncap: local:%d remote:%d result:%d", |
| 741 | auto_accept, remote_conncap, conncap); |
| 742 | |
| 743 | p2p_prepare_channel(p2p, dev, forced_freq, pref_freq, 0); |
| 744 | |
| 745 | resp_fcap.cpt = p2ps_own_preferred_cpt(p2ps_adv->cpt_priority, |
| 746 | req_fcap->cpt); |
| 747 | |
| 748 | p2p_dbg(p2p, "cpt: service:0x%x remote:0x%x result:0x%x", |
| 749 | p2ps_adv->cpt_mask, req_fcap->cpt, resp_fcap.cpt); |
| 750 | |
| 751 | if (!resp_fcap.cpt) { |
| 752 | p2p_dbg(p2p, |
| 753 | "Incompatible P2PS feature capability CPT bitmask"); |
| 754 | reject = P2P_SC_FAIL_INCOMPATIBLE_PARAMS; |
| 755 | } else if (p2ps_adv->config_methods && |
| 756 | !(msg.wps_config_methods & |
| 757 | p2ps_adv->config_methods)) { |
| 758 | p2p_dbg(p2p, |
| 759 | "Unsupported config methods in Provision Discovery Request (own=0x%x peer=0x%x)", |
| 760 | p2ps_adv->config_methods, |
| 761 | msg.wps_config_methods); |
| 762 | reject = P2P_SC_FAIL_INCOMPATIBLE_PARAMS; |
| 763 | } else if (!p2ps_adv->state) { |
| 764 | p2p_dbg(p2p, "P2PS state unavailable"); |
| 765 | reject = P2P_SC_FAIL_UNABLE_TO_ACCOMMODATE; |
| 766 | } else if (!conncap) { |
| 767 | p2p_dbg(p2p, "Conncap resolution failed"); |
| 768 | reject = P2P_SC_FAIL_INCOMPATIBLE_PARAMS; |
| 769 | } |
| 770 | |
| 771 | if (msg.wps_config_methods & WPS_CONFIG_KEYPAD) { |
| 772 | p2p_dbg(p2p, "Keypad - always defer"); |
| 773 | auto_accept = 0; |
| 774 | } |
| 775 | |
| 776 | if ((remote_conncap & (P2PS_SETUP_NEW | P2PS_SETUP_CLIENT) || |
| 777 | msg.persistent_dev) && conncap != P2PS_SETUP_NEW && |
| 778 | msg.channel_list && msg.channel_list_len && |
| 779 | p2p_peer_channels_check(p2p, &p2p->channels, dev, |
| 780 | msg.channel_list, |
| 781 | msg.channel_list_len) < 0) { |
| 782 | p2p_dbg(p2p, |
| 783 | "No common channels - force deferred flow"); |
| 784 | auto_accept = 0; |
| 785 | } |
| 786 | |
| 787 | if (((remote_conncap & P2PS_SETUP_GROUP_OWNER) || |
| 788 | msg.persistent_dev) && msg.operating_channel) { |
| 789 | struct p2p_channels intersect; |
| 790 | |
| 791 | /* |
| 792 | * There are cases where only the operating channel is |
| 793 | * provided. This requires saving the channel as the |
| 794 | * supported channel list, and verifying that it is |
| 795 | * supported. |
| 796 | */ |
| 797 | if (dev->channels.reg_classes == 0 || |
| 798 | !p2p_channels_includes(&dev->channels, |
| 799 | msg.operating_channel[3], |
| 800 | msg.operating_channel[4])) { |
| 801 | struct p2p_channels *ch = &dev->channels; |
| 802 | |
| 803 | os_memset(ch, 0, sizeof(*ch)); |
| 804 | ch->reg_class[0].reg_class = |
| 805 | msg.operating_channel[3]; |
| 806 | ch->reg_class[0].channel[0] = |
| 807 | msg.operating_channel[4]; |
| 808 | ch->reg_class[0].channels = 1; |
| 809 | ch->reg_classes = 1; |
Dmitry Shmidt | 216983b | 2015-02-06 10:50:36 -0800 | [diff] [blame] | 810 | } |
| 811 | |
Dmitry Shmidt | d80a401 | 2015-11-05 16:35:40 -0800 | [diff] [blame] | 812 | p2p_channels_intersect(&p2p->channels, &dev->channels, |
| 813 | &intersect); |
| 814 | |
| 815 | if (intersect.reg_classes == 0) { |
| 816 | p2p_dbg(p2p, |
| 817 | "No common channels - force deferred flow"); |
| 818 | auto_accept = 0; |
| 819 | } |
| 820 | } |
| 821 | |
| 822 | if (auto_accept || reject != P2P_SC_SUCCESS) { |
| 823 | struct p2ps_provision *tmp; |
| 824 | |
Dmitry Shmidt | 216983b | 2015-02-06 10:50:36 -0800 | [diff] [blame] | 825 | if (p2ps_setup_p2ps_prov(p2p, adv_id, session_id, |
| 826 | msg.wps_config_methods, |
| 827 | session_mac, adv_mac) < 0) { |
| 828 | reject = P2P_SC_FAIL_UNABLE_TO_ACCOMMODATE; |
| 829 | goto out; |
| 830 | } |
Dmitry Shmidt | d80a401 | 2015-11-05 16:35:40 -0800 | [diff] [blame] | 831 | |
Dmitry Shmidt | 216983b | 2015-02-06 10:50:36 -0800 | [diff] [blame] | 832 | tmp = p2p->p2ps_prov; |
Dmitry Shmidt | d80a401 | 2015-11-05 16:35:40 -0800 | [diff] [blame] | 833 | tmp->force_freq = forced_freq; |
| 834 | tmp->pref_freq = pref_freq; |
| 835 | if (conncap) { |
| 836 | tmp->conncap = conncap; |
| 837 | tmp->status = P2P_SC_SUCCESS; |
| 838 | } else { |
| 839 | tmp->conncap = auto_accept; |
| 840 | tmp->status = P2P_SC_FAIL_INCOMPATIBLE_PARAMS; |
Dmitry Shmidt | 216983b | 2015-02-06 10:50:36 -0800 | [diff] [blame] | 841 | } |
Dmitry Shmidt | d80a401 | 2015-11-05 16:35:40 -0800 | [diff] [blame] | 842 | |
| 843 | if (reject != P2P_SC_SUCCESS) |
| 844 | goto out; |
Dmitry Shmidt | 216983b | 2015-02-06 10:50:36 -0800 | [diff] [blame] | 845 | } |
| 846 | } |
Dmitry Shmidt | 8d520ff | 2011-05-09 14:06:53 -0700 | [diff] [blame] | 847 | |
Dmitry Shmidt | d80a401 | 2015-11-05 16:35:40 -0800 | [diff] [blame] | 848 | if (!msg.status && !auto_accept && |
| 849 | (!p2p->p2ps_prov || p2p->p2ps_prov->adv_id != adv_id)) { |
| 850 | struct p2ps_provision *tmp; |
| 851 | |
| 852 | if (!conncap) { |
| 853 | reject = P2P_SC_FAIL_INCOMPATIBLE_PARAMS; |
| 854 | goto out; |
| 855 | } |
| 856 | |
| 857 | if (p2ps_setup_p2ps_prov(p2p, adv_id, session_id, |
| 858 | msg.wps_config_methods, |
| 859 | session_mac, adv_mac) < 0) { |
| 860 | reject = P2P_SC_FAIL_UNABLE_TO_ACCOMMODATE; |
| 861 | goto out; |
| 862 | } |
| 863 | tmp = p2p->p2ps_prov; |
| 864 | reject = P2P_SC_FAIL_INFO_CURRENTLY_UNAVAILABLE; |
| 865 | tmp->status = reject; |
| 866 | } |
| 867 | |
| 868 | /* Not a P2PS Follow-on PD */ |
| 869 | if (!msg.status) |
| 870 | goto out; |
| 871 | |
| 872 | if (*msg.status && *msg.status != P2P_SC_SUCCESS_DEFERRED) { |
| 873 | reject = *msg.status; |
| 874 | goto out; |
| 875 | } |
| 876 | |
| 877 | if (*msg.status != P2P_SC_SUCCESS_DEFERRED || !p2p->p2ps_prov) |
| 878 | goto out; |
| 879 | |
| 880 | if (p2p->p2ps_prov->adv_id != adv_id || |
| 881 | os_memcmp(p2p->p2ps_prov->adv_mac, msg.adv_mac, ETH_ALEN)) { |
| 882 | p2p_dbg(p2p, |
| 883 | "P2PS Follow-on PD with mismatch Advertisement ID/MAC"); |
| 884 | goto out; |
| 885 | } |
| 886 | |
| 887 | if (p2p->p2ps_prov->session_id != session_id || |
| 888 | os_memcmp(p2p->p2ps_prov->session_mac, msg.session_mac, ETH_ALEN)) { |
| 889 | p2p_dbg(p2p, "P2PS Follow-on PD with mismatch Session ID/MAC"); |
| 890 | goto out; |
| 891 | } |
| 892 | |
| 893 | method = p2p->p2ps_prov->method; |
| 894 | |
| 895 | conncap = p2p->cfg->p2ps_group_capability(p2p->cfg->cb_ctx, |
| 896 | remote_conncap, |
| 897 | p2p->p2ps_prov->conncap, |
| 898 | &p2p->p2ps_prov->force_freq, |
| 899 | &p2p->p2ps_prov->pref_freq); |
| 900 | |
| 901 | resp_fcap.cpt = p2ps_own_preferred_cpt(p2p->p2ps_prov->cpt_priority, |
| 902 | req_fcap->cpt); |
| 903 | |
| 904 | p2p_dbg(p2p, "cpt: local:0x%x remote:0x%x result:0x%x", |
| 905 | p2p->p2ps_prov->cpt_mask, req_fcap->cpt, resp_fcap.cpt); |
| 906 | |
| 907 | p2p_prepare_channel(p2p, dev, p2p->p2ps_prov->force_freq, |
| 908 | p2p->p2ps_prov->pref_freq, 0); |
| 909 | |
| 910 | /* |
| 911 | * Ensure that if we asked for PIN originally, our method is consistent |
| 912 | * with original request. |
| 913 | */ |
| 914 | if (method & WPS_CONFIG_DISPLAY) |
| 915 | method = WPS_CONFIG_KEYPAD; |
| 916 | else if (method & WPS_CONFIG_KEYPAD) |
| 917 | method = WPS_CONFIG_DISPLAY; |
| 918 | |
| 919 | if (!conncap || !(msg.wps_config_methods & method)) { |
| 920 | /* |
| 921 | * Reject this "Deferred Accept* |
| 922 | * if incompatible conncap or method |
| 923 | */ |
| 924 | reject = P2P_SC_FAIL_INCOMPATIBLE_PARAMS; |
| 925 | } else if (!resp_fcap.cpt) { |
| 926 | p2p_dbg(p2p, |
| 927 | "Incompatible P2PS feature capability CPT bitmask"); |
| 928 | reject = P2P_SC_FAIL_INCOMPATIBLE_PARAMS; |
| 929 | } else if ((remote_conncap & (P2PS_SETUP_NEW | P2PS_SETUP_CLIENT) || |
| 930 | msg.persistent_dev) && conncap != P2PS_SETUP_NEW && |
| 931 | msg.channel_list && msg.channel_list_len && |
| 932 | p2p_peer_channels_check(p2p, &p2p->channels, dev, |
| 933 | msg.channel_list, |
| 934 | msg.channel_list_len) < 0) { |
| 935 | p2p_dbg(p2p, |
| 936 | "No common channels in Follow-On Provision Discovery Request"); |
| 937 | reject = P2P_SC_FAIL_NO_COMMON_CHANNELS; |
| 938 | } else { |
| 939 | reject = P2P_SC_SUCCESS; |
| 940 | } |
| 941 | |
| 942 | dev->oper_freq = 0; |
| 943 | if (reject == P2P_SC_SUCCESS || reject == P2P_SC_SUCCESS_DEFERRED) { |
| 944 | u8 tmp; |
| 945 | |
| 946 | if (msg.operating_channel) |
| 947 | dev->oper_freq = |
| 948 | p2p_channel_to_freq(msg.operating_channel[3], |
| 949 | msg.operating_channel[4]); |
| 950 | |
| 951 | if ((conncap & P2PS_SETUP_GROUP_OWNER) && |
| 952 | p2p_go_select_channel(p2p, dev, &tmp) < 0) |
| 953 | reject = P2P_SC_FAIL_NO_COMMON_CHANNELS; |
| 954 | } |
| 955 | |
| 956 | p2p->p2ps_prov->status = reject; |
| 957 | p2p->p2ps_prov->conncap = conncap; |
| 958 | |
Dmitry Shmidt | 8d520ff | 2011-05-09 14:06:53 -0700 | [diff] [blame] | 959 | out: |
Dmitry Shmidt | 216983b | 2015-02-06 10:50:36 -0800 | [diff] [blame] | 960 | if (reject == P2P_SC_SUCCESS || |
| 961 | reject == P2P_SC_FAIL_INFO_CURRENTLY_UNAVAILABLE) |
| 962 | config_methods = msg.wps_config_methods; |
| 963 | else |
| 964 | config_methods = 0; |
Dmitry Shmidt | 8d520ff | 2011-05-09 14:06:53 -0700 | [diff] [blame] | 965 | |
Dmitry Shmidt | d80a401 | 2015-11-05 16:35:40 -0800 | [diff] [blame] | 966 | /* |
| 967 | * Send PD Response for an initial PD Request or for follow-on |
| 968 | * PD Request with P2P_SC_SUCCESS_DEFERRED status. |
| 969 | */ |
| 970 | if (!msg.status || *msg.status == P2P_SC_SUCCESS_DEFERRED) { |
| 971 | resp = p2p_build_prov_disc_resp(p2p, dev, msg.dialog_token, |
| 972 | reject, config_methods, adv_id, |
| 973 | msg.group_id, msg.group_id_len, |
| 974 | msg.persistent_ssid, |
| 975 | msg.persistent_ssid_len, |
| 976 | (const u8 *) &resp_fcap, |
| 977 | sizeof(resp_fcap)); |
| 978 | if (!resp) { |
| 979 | p2p_parse_free(&msg); |
| 980 | return; |
| 981 | } |
| 982 | p2p_dbg(p2p, "Sending Provision Discovery Response"); |
| 983 | if (rx_freq > 0) |
| 984 | freq = rx_freq; |
| 985 | else |
| 986 | freq = p2p_channel_to_freq(p2p->cfg->reg_class, |
| 987 | p2p->cfg->channel); |
| 988 | if (freq < 0) { |
| 989 | p2p_dbg(p2p, "Unknown regulatory class/channel"); |
| 990 | wpabuf_free(resp); |
| 991 | p2p_parse_free(&msg); |
| 992 | return; |
| 993 | } |
| 994 | p2p->pending_action_state = P2P_PENDING_PD_RESPONSE; |
| 995 | if (p2p_send_action(p2p, freq, sa, p2p->cfg->dev_addr, |
| 996 | p2p->cfg->dev_addr, |
| 997 | wpabuf_head(resp), wpabuf_len(resp), |
Dmitry Shmidt | b97e428 | 2016-02-08 10:16:07 -0800 | [diff] [blame] | 998 | 50) < 0) |
Dmitry Shmidt | d80a401 | 2015-11-05 16:35:40 -0800 | [diff] [blame] | 999 | p2p_dbg(p2p, "Failed to send Action frame"); |
| 1000 | else |
| 1001 | p2p->send_action_in_progress = 1; |
| 1002 | |
| 1003 | wpabuf_free(resp); |
| 1004 | } |
| 1005 | |
| 1006 | if (!dev) { |
| 1007 | p2p_parse_free(&msg); |
| 1008 | return; |
| 1009 | } |
| 1010 | |
| 1011 | freq = 0; |
| 1012 | if (reject == P2P_SC_SUCCESS && conncap == P2PS_SETUP_GROUP_OWNER) { |
| 1013 | freq = p2p_channel_to_freq(p2p->op_reg_class, |
| 1014 | p2p->op_channel); |
| 1015 | if (freq < 0) |
| 1016 | freq = 0; |
| 1017 | } |
Dmitry Shmidt | 8d520ff | 2011-05-09 14:06:53 -0700 | [diff] [blame] | 1018 | |
Dmitry Shmidt | 216983b | 2015-02-06 10:50:36 -0800 | [diff] [blame] | 1019 | if (!p2p->cfg->p2ps_prov_complete) { |
| 1020 | /* Don't emit anything */ |
| 1021 | } else if (msg.status && *msg.status != P2P_SC_SUCCESS && |
| 1022 | *msg.status != P2P_SC_SUCCESS_DEFERRED) { |
| 1023 | reject = *msg.status; |
| 1024 | p2p->cfg->p2ps_prov_complete(p2p->cfg->cb_ctx, reject, |
| 1025 | sa, adv_mac, session_mac, |
| 1026 | NULL, adv_id, session_id, |
| 1027 | 0, 0, msg.persistent_ssid, |
| 1028 | msg.persistent_ssid_len, |
Dmitry Shmidt | de47be7 | 2016-01-07 12:52:55 -0800 | [diff] [blame] | 1029 | 0, 0, NULL, NULL, 0, freq, |
| 1030 | NULL, 0); |
Dmitry Shmidt | 216983b | 2015-02-06 10:50:36 -0800 | [diff] [blame] | 1031 | } else if (msg.status && *msg.status == P2P_SC_SUCCESS_DEFERRED && |
| 1032 | p2p->p2ps_prov) { |
| 1033 | p2p->p2ps_prov->status = reject; |
| 1034 | p2p->p2ps_prov->conncap = conncap; |
| 1035 | |
| 1036 | if (reject != P2P_SC_SUCCESS) |
| 1037 | p2p->cfg->p2ps_prov_complete(p2p->cfg->cb_ctx, reject, |
| 1038 | sa, adv_mac, session_mac, |
| 1039 | NULL, adv_id, |
| 1040 | session_id, conncap, 0, |
| 1041 | msg.persistent_ssid, |
| 1042 | msg.persistent_ssid_len, 0, |
Dmitry Shmidt | de47be7 | 2016-01-07 12:52:55 -0800 | [diff] [blame] | 1043 | 0, NULL, NULL, 0, freq, |
| 1044 | NULL, 0); |
Dmitry Shmidt | 216983b | 2015-02-06 10:50:36 -0800 | [diff] [blame] | 1045 | else |
| 1046 | p2p->cfg->p2ps_prov_complete(p2p->cfg->cb_ctx, |
| 1047 | *msg.status, |
| 1048 | sa, adv_mac, session_mac, |
| 1049 | group_mac, adv_id, |
| 1050 | session_id, conncap, |
| 1051 | passwd_id, |
| 1052 | msg.persistent_ssid, |
| 1053 | msg.persistent_ssid_len, 0, |
Dmitry Shmidt | d80a401 | 2015-11-05 16:35:40 -0800 | [diff] [blame] | 1054 | 0, NULL, |
| 1055 | (const u8 *) &resp_fcap, |
Dmitry Shmidt | de47be7 | 2016-01-07 12:52:55 -0800 | [diff] [blame] | 1056 | sizeof(resp_fcap), freq, |
| 1057 | NULL, 0); |
Dmitry Shmidt | 216983b | 2015-02-06 10:50:36 -0800 | [diff] [blame] | 1058 | } else if (msg.status && p2p->p2ps_prov) { |
| 1059 | p2p->p2ps_prov->status = P2P_SC_SUCCESS; |
| 1060 | p2p->cfg->p2ps_prov_complete(p2p->cfg->cb_ctx, *msg.status, sa, |
| 1061 | adv_mac, session_mac, group_mac, |
| 1062 | adv_id, session_id, conncap, |
| 1063 | passwd_id, |
| 1064 | msg.persistent_ssid, |
| 1065 | msg.persistent_ssid_len, |
Dmitry Shmidt | d80a401 | 2015-11-05 16:35:40 -0800 | [diff] [blame] | 1066 | 0, 0, NULL, |
| 1067 | (const u8 *) &resp_fcap, |
Dmitry Shmidt | de47be7 | 2016-01-07 12:52:55 -0800 | [diff] [blame] | 1068 | sizeof(resp_fcap), freq, NULL, 0); |
Dmitry Shmidt | 216983b | 2015-02-06 10:50:36 -0800 | [diff] [blame] | 1069 | } else if (msg.status) { |
| 1070 | } else if (auto_accept && reject == P2P_SC_SUCCESS) { |
| 1071 | p2p->cfg->p2ps_prov_complete(p2p->cfg->cb_ctx, P2P_SC_SUCCESS, |
| 1072 | sa, adv_mac, session_mac, |
| 1073 | group_mac, adv_id, session_id, |
| 1074 | conncap, passwd_id, |
| 1075 | msg.persistent_ssid, |
| 1076 | msg.persistent_ssid_len, |
Dmitry Shmidt | d80a401 | 2015-11-05 16:35:40 -0800 | [diff] [blame] | 1077 | 0, 0, NULL, |
| 1078 | (const u8 *) &resp_fcap, |
Dmitry Shmidt | de47be7 | 2016-01-07 12:52:55 -0800 | [diff] [blame] | 1079 | sizeof(resp_fcap), freq, |
| 1080 | msg.group_id ? |
| 1081 | msg.group_id + ETH_ALEN : NULL, |
| 1082 | msg.group_id ? |
| 1083 | msg.group_id_len - ETH_ALEN : 0); |
Dmitry Shmidt | 216983b | 2015-02-06 10:50:36 -0800 | [diff] [blame] | 1084 | } else if (reject == P2P_SC_FAIL_INFO_CURRENTLY_UNAVAILABLE && |
| 1085 | (!msg.session_info || !msg.session_info_len)) { |
| 1086 | p2p->p2ps_prov->method = msg.wps_config_methods; |
| 1087 | |
| 1088 | p2p->cfg->p2ps_prov_complete(p2p->cfg->cb_ctx, P2P_SC_SUCCESS, |
| 1089 | sa, adv_mac, session_mac, |
| 1090 | group_mac, adv_id, session_id, |
| 1091 | conncap, passwd_id, |
| 1092 | msg.persistent_ssid, |
| 1093 | msg.persistent_ssid_len, |
Dmitry Shmidt | d80a401 | 2015-11-05 16:35:40 -0800 | [diff] [blame] | 1094 | 0, 1, NULL, |
| 1095 | (const u8 *) &resp_fcap, |
Dmitry Shmidt | de47be7 | 2016-01-07 12:52:55 -0800 | [diff] [blame] | 1096 | sizeof(resp_fcap), freq, NULL, 0); |
Dmitry Shmidt | 216983b | 2015-02-06 10:50:36 -0800 | [diff] [blame] | 1097 | } else if (reject == P2P_SC_FAIL_INFO_CURRENTLY_UNAVAILABLE) { |
| 1098 | size_t buf_len = msg.session_info_len; |
| 1099 | char *buf = os_malloc(2 * buf_len + 1); |
| 1100 | |
| 1101 | if (buf) { |
| 1102 | p2p->p2ps_prov->method = msg.wps_config_methods; |
| 1103 | |
| 1104 | utf8_escape((char *) msg.session_info, buf_len, |
| 1105 | buf, 2 * buf_len + 1); |
| 1106 | |
| 1107 | p2p->cfg->p2ps_prov_complete( |
| 1108 | p2p->cfg->cb_ctx, P2P_SC_SUCCESS, sa, |
| 1109 | adv_mac, session_mac, group_mac, adv_id, |
| 1110 | session_id, conncap, passwd_id, |
| 1111 | msg.persistent_ssid, msg.persistent_ssid_len, |
Dmitry Shmidt | d80a401 | 2015-11-05 16:35:40 -0800 | [diff] [blame] | 1112 | 0, 1, buf, |
| 1113 | (const u8 *) &resp_fcap, sizeof(resp_fcap), |
Dmitry Shmidt | de47be7 | 2016-01-07 12:52:55 -0800 | [diff] [blame] | 1114 | freq, NULL, 0); |
Dmitry Shmidt | 216983b | 2015-02-06 10:50:36 -0800 | [diff] [blame] | 1115 | |
| 1116 | os_free(buf); |
| 1117 | } |
| 1118 | } |
| 1119 | |
Dmitry Shmidt | d80a401 | 2015-11-05 16:35:40 -0800 | [diff] [blame] | 1120 | /* |
| 1121 | * prov_disc_req callback is used to generate P2P-PROV-DISC-ENTER-PIN, |
| 1122 | * P2P-PROV-DISC-SHOW-PIN, and P2P-PROV-DISC-PBC-REQ events. |
| 1123 | * Call it either on legacy P2P PD or on P2PS PD only if we need to |
| 1124 | * enter/show PIN. |
| 1125 | * |
| 1126 | * The callback is called in the following cases: |
| 1127 | * 1. Legacy P2P PD request, response status SUCCESS |
| 1128 | * 2. P2PS advertiser, method: DISPLAY, autoaccept: TRUE, |
| 1129 | * response status: SUCCESS |
| 1130 | * 3. P2PS advertiser, method DISPLAY, autoaccept: FALSE, |
| 1131 | * response status: INFO_CURRENTLY_UNAVAILABLE |
| 1132 | * 4. P2PS advertiser, method: KEYPAD, autoaccept==any, |
| 1133 | * response status: INFO_CURRENTLY_UNAVAILABLE |
| 1134 | * 5. P2PS follow-on with SUCCESS_DEFERRED, |
| 1135 | * advertiser role: DISPLAY, autoaccept: FALSE, |
| 1136 | * seeker: KEYPAD, response status: SUCCESS |
| 1137 | */ |
| 1138 | if (p2p->cfg->prov_disc_req && |
| 1139 | ((reject == P2P_SC_SUCCESS && !msg.adv_id) || |
| 1140 | (!msg.status && |
| 1141 | (reject == P2P_SC_SUCCESS || |
| 1142 | reject == P2P_SC_FAIL_INFO_CURRENTLY_UNAVAILABLE) && |
| 1143 | passwd_id == DEV_PW_USER_SPECIFIED) || |
| 1144 | (!msg.status && |
| 1145 | reject == P2P_SC_FAIL_INFO_CURRENTLY_UNAVAILABLE && |
| 1146 | passwd_id == DEV_PW_REGISTRAR_SPECIFIED) || |
| 1147 | (reject == P2P_SC_SUCCESS && |
| 1148 | msg.status && *msg.status == P2P_SC_SUCCESS_DEFERRED && |
| 1149 | passwd_id == DEV_PW_REGISTRAR_SPECIFIED))) { |
Dmitry Shmidt | 8d520ff | 2011-05-09 14:06:53 -0700 | [diff] [blame] | 1150 | const u8 *dev_addr = sa; |
Dmitry Shmidt | d80a401 | 2015-11-05 16:35:40 -0800 | [diff] [blame] | 1151 | |
Dmitry Shmidt | 8d520ff | 2011-05-09 14:06:53 -0700 | [diff] [blame] | 1152 | if (msg.p2p_device_addr) |
| 1153 | dev_addr = msg.p2p_device_addr; |
| 1154 | p2p->cfg->prov_disc_req(p2p->cfg->cb_ctx, sa, |
| 1155 | msg.wps_config_methods, |
| 1156 | dev_addr, msg.pri_dev_type, |
| 1157 | msg.device_name, msg.config_methods, |
| 1158 | msg.capability ? msg.capability[0] : 0, |
| 1159 | msg.capability ? msg.capability[1] : |
Dmitry Shmidt | 1f69aa5 | 2012-01-24 16:10:04 -0800 | [diff] [blame] | 1160 | 0, |
| 1161 | msg.group_id, msg.group_id_len); |
Dmitry Shmidt | 8d520ff | 2011-05-09 14:06:53 -0700 | [diff] [blame] | 1162 | } |
Dmitry Shmidt | d80a401 | 2015-11-05 16:35:40 -0800 | [diff] [blame] | 1163 | |
Dmitry Shmidt | 9839ecd | 2016-11-07 11:05:47 -0800 | [diff] [blame] | 1164 | if (reject != P2P_SC_FAIL_INFO_CURRENTLY_UNAVAILABLE) |
| 1165 | p2ps_prov_free(p2p); |
| 1166 | |
Dmitry Shmidt | d80a401 | 2015-11-05 16:35:40 -0800 | [diff] [blame] | 1167 | if (reject == P2P_SC_SUCCESS) { |
| 1168 | switch (config_methods) { |
| 1169 | case WPS_CONFIG_DISPLAY: |
| 1170 | dev->wps_prov_info = WPS_CONFIG_KEYPAD; |
| 1171 | break; |
| 1172 | case WPS_CONFIG_KEYPAD: |
| 1173 | dev->wps_prov_info = WPS_CONFIG_DISPLAY; |
| 1174 | break; |
| 1175 | case WPS_CONFIG_PUSHBUTTON: |
| 1176 | dev->wps_prov_info = WPS_CONFIG_PUSHBUTTON; |
| 1177 | break; |
| 1178 | case WPS_CONFIG_P2PS: |
| 1179 | dev->wps_prov_info = WPS_CONFIG_P2PS; |
| 1180 | break; |
| 1181 | default: |
| 1182 | dev->wps_prov_info = 0; |
| 1183 | break; |
| 1184 | } |
| 1185 | |
| 1186 | if (msg.intended_addr) |
| 1187 | os_memcpy(dev->interface_addr, msg.intended_addr, |
| 1188 | ETH_ALEN); |
| 1189 | } |
Dmitry Shmidt | 8d520ff | 2011-05-09 14:06:53 -0700 | [diff] [blame] | 1190 | p2p_parse_free(&msg); |
| 1191 | } |
| 1192 | |
| 1193 | |
Dmitry Shmidt | d80a401 | 2015-11-05 16:35:40 -0800 | [diff] [blame] | 1194 | static int p2p_validate_p2ps_pd_resp(struct p2p_data *p2p, |
| 1195 | struct p2p_message *msg) |
| 1196 | { |
| 1197 | u8 conn_cap_go = 0; |
| 1198 | u8 conn_cap_cli = 0; |
| 1199 | u32 session_id; |
| 1200 | u32 adv_id; |
| 1201 | |
| 1202 | #define P2PS_PD_RESP_CHECK(_val, _attr) \ |
| 1203 | do { \ |
| 1204 | if ((_val) && !msg->_attr) { \ |
| 1205 | p2p_dbg(p2p, "P2PS PD Response missing " #_attr); \ |
| 1206 | return -1; \ |
| 1207 | } \ |
| 1208 | } while (0) |
| 1209 | |
| 1210 | P2PS_PD_RESP_CHECK(1, status); |
| 1211 | P2PS_PD_RESP_CHECK(1, adv_id); |
| 1212 | P2PS_PD_RESP_CHECK(1, adv_mac); |
| 1213 | P2PS_PD_RESP_CHECK(1, capability); |
| 1214 | P2PS_PD_RESP_CHECK(1, p2p_device_info); |
| 1215 | P2PS_PD_RESP_CHECK(1, session_id); |
| 1216 | P2PS_PD_RESP_CHECK(1, session_mac); |
| 1217 | P2PS_PD_RESP_CHECK(1, feature_cap); |
| 1218 | |
| 1219 | session_id = WPA_GET_LE32(msg->session_id); |
| 1220 | adv_id = WPA_GET_LE32(msg->adv_id); |
| 1221 | |
| 1222 | if (p2p->p2ps_prov->session_id != session_id) { |
| 1223 | p2p_dbg(p2p, |
| 1224 | "Ignore PD Response with unexpected Session ID"); |
| 1225 | return -1; |
| 1226 | } |
| 1227 | |
| 1228 | if (os_memcmp(p2p->p2ps_prov->session_mac, msg->session_mac, |
| 1229 | ETH_ALEN)) { |
| 1230 | p2p_dbg(p2p, |
| 1231 | "Ignore PD Response with unexpected Session MAC"); |
| 1232 | return -1; |
| 1233 | } |
| 1234 | |
| 1235 | if (p2p->p2ps_prov->adv_id != adv_id) { |
| 1236 | p2p_dbg(p2p, |
| 1237 | "Ignore PD Response with unexpected Advertisement ID"); |
| 1238 | return -1; |
| 1239 | } |
| 1240 | |
| 1241 | if (os_memcmp(p2p->p2ps_prov->adv_mac, msg->adv_mac, ETH_ALEN) != 0) { |
| 1242 | p2p_dbg(p2p, |
| 1243 | "Ignore PD Response with unexpected Advertisement MAC"); |
| 1244 | return -1; |
| 1245 | } |
| 1246 | |
| 1247 | if (msg->listen_channel) { |
| 1248 | p2p_dbg(p2p, |
| 1249 | "Ignore malformed PD Response - unexpected Listen Channel"); |
| 1250 | return -1; |
| 1251 | } |
| 1252 | |
| 1253 | if (*msg->status == P2P_SC_SUCCESS && |
| 1254 | !(!!msg->conn_cap ^ !!msg->persistent_dev)) { |
| 1255 | p2p_dbg(p2p, |
| 1256 | "Ignore malformed PD Response - either conn_cap or persistent group should be present"); |
| 1257 | return -1; |
| 1258 | } |
| 1259 | |
| 1260 | if (msg->persistent_dev && *msg->status != P2P_SC_SUCCESS) { |
| 1261 | p2p_dbg(p2p, |
| 1262 | "Ignore malformed PD Response - persistent group is present, but the status isn't success"); |
| 1263 | return -1; |
| 1264 | } |
| 1265 | |
| 1266 | if (msg->conn_cap) { |
| 1267 | conn_cap_go = *msg->conn_cap == P2PS_SETUP_GROUP_OWNER; |
| 1268 | conn_cap_cli = *msg->conn_cap == P2PS_SETUP_CLIENT; |
| 1269 | } |
| 1270 | |
| 1271 | P2PS_PD_RESP_CHECK(msg->persistent_dev || conn_cap_go || conn_cap_cli, |
| 1272 | channel_list); |
| 1273 | P2PS_PD_RESP_CHECK(msg->persistent_dev || conn_cap_go || conn_cap_cli, |
| 1274 | config_timeout); |
| 1275 | |
| 1276 | P2PS_PD_RESP_CHECK(conn_cap_go, group_id); |
| 1277 | P2PS_PD_RESP_CHECK(conn_cap_go, intended_addr); |
| 1278 | P2PS_PD_RESP_CHECK(conn_cap_go, operating_channel); |
| 1279 | /* |
| 1280 | * TODO: Also validate that operating channel is present if the device |
| 1281 | * is a GO in a persistent group. We can't do it here since we don't |
| 1282 | * know what is the role of the peer. It should be probably done in |
| 1283 | * p2ps_prov_complete callback, but currently operating channel isn't |
| 1284 | * passed to it. |
| 1285 | */ |
| 1286 | |
| 1287 | #undef P2PS_PD_RESP_CHECK |
| 1288 | |
| 1289 | return 0; |
| 1290 | } |
| 1291 | |
| 1292 | |
Dmitry Shmidt | 8d520ff | 2011-05-09 14:06:53 -0700 | [diff] [blame] | 1293 | void p2p_process_prov_disc_resp(struct p2p_data *p2p, const u8 *sa, |
| 1294 | const u8 *data, size_t len) |
| 1295 | { |
| 1296 | struct p2p_message msg; |
| 1297 | struct p2p_device *dev; |
Dmitry Shmidt | 444d567 | 2013-04-01 13:08:44 -0700 | [diff] [blame] | 1298 | u16 report_config_methods = 0, req_config_methods; |
Dmitry Shmidt | 216983b | 2015-02-06 10:50:36 -0800 | [diff] [blame] | 1299 | u8 status = P2P_SC_SUCCESS; |
Dmitry Shmidt | 216983b | 2015-02-06 10:50:36 -0800 | [diff] [blame] | 1300 | u32 adv_id = 0; |
| 1301 | u8 conncap = P2PS_SETUP_NEW; |
| 1302 | u8 adv_mac[ETH_ALEN]; |
Dmitry Shmidt | d80a401 | 2015-11-05 16:35:40 -0800 | [diff] [blame] | 1303 | const u8 *group_mac; |
Dmitry Shmidt | 216983b | 2015-02-06 10:50:36 -0800 | [diff] [blame] | 1304 | int passwd_id = DEV_PW_DEFAULT; |
Dmitry Shmidt | d80a401 | 2015-11-05 16:35:40 -0800 | [diff] [blame] | 1305 | int p2ps_seeker; |
Dmitry Shmidt | 8d520ff | 2011-05-09 14:06:53 -0700 | [diff] [blame] | 1306 | |
| 1307 | if (p2p_parse(data, len, &msg)) |
| 1308 | return; |
| 1309 | |
Dmitry Shmidt | d80a401 | 2015-11-05 16:35:40 -0800 | [diff] [blame] | 1310 | if (p2p->p2ps_prov && p2p_validate_p2ps_pd_resp(p2p, &msg)) { |
| 1311 | p2p_parse_free(&msg); |
| 1312 | return; |
| 1313 | } |
| 1314 | |
Dmitry Shmidt | 216983b | 2015-02-06 10:50:36 -0800 | [diff] [blame] | 1315 | /* Parse the P2PS members present */ |
| 1316 | if (msg.status) |
| 1317 | status = *msg.status; |
| 1318 | |
Dmitry Shmidt | d80a401 | 2015-11-05 16:35:40 -0800 | [diff] [blame] | 1319 | group_mac = msg.intended_addr; |
Dmitry Shmidt | 216983b | 2015-02-06 10:50:36 -0800 | [diff] [blame] | 1320 | |
| 1321 | if (msg.adv_mac) |
| 1322 | os_memcpy(adv_mac, msg.adv_mac, ETH_ALEN); |
| 1323 | else |
| 1324 | os_memset(adv_mac, 0, ETH_ALEN); |
| 1325 | |
| 1326 | if (msg.adv_id) |
| 1327 | adv_id = WPA_GET_LE32(msg.adv_id); |
| 1328 | |
| 1329 | if (msg.conn_cap) { |
| 1330 | conncap = *msg.conn_cap; |
| 1331 | |
| 1332 | /* Switch bits to local relative */ |
| 1333 | switch (conncap) { |
| 1334 | case P2PS_SETUP_GROUP_OWNER: |
| 1335 | conncap = P2PS_SETUP_CLIENT; |
| 1336 | break; |
| 1337 | case P2PS_SETUP_CLIENT: |
| 1338 | conncap = P2PS_SETUP_GROUP_OWNER; |
| 1339 | break; |
| 1340 | } |
| 1341 | } |
| 1342 | |
Dmitry Shmidt | b6e9aaf | 2013-05-20 14:49:44 -0700 | [diff] [blame] | 1343 | p2p_dbg(p2p, "Received Provision Discovery Response from " MACSTR |
Dmitry Shmidt | 8d520ff | 2011-05-09 14:06:53 -0700 | [diff] [blame] | 1344 | " with config methods 0x%x", |
| 1345 | MAC2STR(sa), msg.wps_config_methods); |
| 1346 | |
| 1347 | dev = p2p_get_device(p2p, sa); |
| 1348 | if (dev == NULL || !dev->req_config_methods) { |
Dmitry Shmidt | b6e9aaf | 2013-05-20 14:49:44 -0700 | [diff] [blame] | 1349 | p2p_dbg(p2p, "Ignore Provision Discovery Response from " MACSTR |
| 1350 | " with no pending request", MAC2STR(sa)); |
Dmitry Shmidt | 8d520ff | 2011-05-09 14:06:53 -0700 | [diff] [blame] | 1351 | p2p_parse_free(&msg); |
| 1352 | return; |
Dmitry Shmidt | 31a29cc | 2016-03-09 15:58:17 -0800 | [diff] [blame] | 1353 | } else if (msg.wfd_subelems) { |
| 1354 | wpabuf_free(dev->info.wfd_subelems); |
| 1355 | dev->info.wfd_subelems = wpabuf_dup(msg.wfd_subelems); |
Dmitry Shmidt | 8d520ff | 2011-05-09 14:06:53 -0700 | [diff] [blame] | 1356 | } |
| 1357 | |
| 1358 | if (dev->dialog_token != msg.dialog_token) { |
Dmitry Shmidt | b6e9aaf | 2013-05-20 14:49:44 -0700 | [diff] [blame] | 1359 | p2p_dbg(p2p, "Ignore Provision Discovery Response with unexpected Dialog Token %u (expected %u)", |
Dmitry Shmidt | 8d520ff | 2011-05-09 14:06:53 -0700 | [diff] [blame] | 1360 | msg.dialog_token, dev->dialog_token); |
| 1361 | p2p_parse_free(&msg); |
| 1362 | return; |
| 1363 | } |
| 1364 | |
Dmitry Shmidt | 91c40cd | 2012-09-25 14:23:53 -0700 | [diff] [blame] | 1365 | if (p2p->pending_action_state == P2P_PENDING_PD) { |
| 1366 | os_memset(p2p->pending_pd_devaddr, 0, ETH_ALEN); |
| 1367 | p2p->pending_action_state = P2P_NO_PENDING_ACTION; |
| 1368 | } |
| 1369 | |
Dmitry Shmidt | d80a401 | 2015-11-05 16:35:40 -0800 | [diff] [blame] | 1370 | p2ps_seeker = p2p->p2ps_prov && p2p->p2ps_prov->pd_seeker; |
| 1371 | |
Jouni Malinen | 75ecf52 | 2011-06-27 15:19:46 -0700 | [diff] [blame] | 1372 | /* |
Dmitry Shmidt | 444d567 | 2013-04-01 13:08:44 -0700 | [diff] [blame] | 1373 | * Use a local copy of the requested config methods since |
| 1374 | * p2p_reset_pending_pd() can clear this in the peer entry. |
| 1375 | */ |
| 1376 | req_config_methods = dev->req_config_methods; |
| 1377 | |
| 1378 | /* |
Jouni Malinen | 75ecf52 | 2011-06-27 15:19:46 -0700 | [diff] [blame] | 1379 | * If the response is from the peer to whom a user initiated request |
| 1380 | * was sent earlier, we reset that state info here. |
| 1381 | */ |
| 1382 | if (p2p->user_initiated_pd && |
| 1383 | os_memcmp(p2p->pending_pd_devaddr, sa, ETH_ALEN) == 0) |
| 1384 | p2p_reset_pending_pd(p2p); |
| 1385 | |
Dmitry Shmidt | 444d567 | 2013-04-01 13:08:44 -0700 | [diff] [blame] | 1386 | if (msg.wps_config_methods != req_config_methods) { |
Dmitry Shmidt | b6e9aaf | 2013-05-20 14:49:44 -0700 | [diff] [blame] | 1387 | p2p_dbg(p2p, "Peer rejected our Provision Discovery Request (received config_methods 0x%x expected 0x%x", |
Dmitry Shmidt | 444d567 | 2013-04-01 13:08:44 -0700 | [diff] [blame] | 1388 | msg.wps_config_methods, req_config_methods); |
Jouni Malinen | 75ecf52 | 2011-06-27 15:19:46 -0700 | [diff] [blame] | 1389 | if (p2p->cfg->prov_disc_fail) |
| 1390 | p2p->cfg->prov_disc_fail(p2p->cfg->cb_ctx, sa, |
Dmitry Shmidt | 216983b | 2015-02-06 10:50:36 -0800 | [diff] [blame] | 1391 | P2P_PROV_DISC_REJECTED, |
| 1392 | adv_id, adv_mac, NULL); |
Dmitry Shmidt | 8d520ff | 2011-05-09 14:06:53 -0700 | [diff] [blame] | 1393 | p2p_parse_free(&msg); |
Dmitry Shmidt | a3dc309 | 2015-06-23 11:21:28 -0700 | [diff] [blame] | 1394 | p2ps_prov_free(p2p); |
Dmitry Shmidt | 8d520ff | 2011-05-09 14:06:53 -0700 | [diff] [blame] | 1395 | goto out; |
| 1396 | } |
| 1397 | |
Dmitry Shmidt | 444d567 | 2013-04-01 13:08:44 -0700 | [diff] [blame] | 1398 | report_config_methods = req_config_methods; |
Dmitry Shmidt | 8d520ff | 2011-05-09 14:06:53 -0700 | [diff] [blame] | 1399 | dev->flags &= ~(P2P_DEV_PD_PEER_DISPLAY | |
Dmitry Shmidt | 216983b | 2015-02-06 10:50:36 -0800 | [diff] [blame] | 1400 | P2P_DEV_PD_PEER_KEYPAD | |
| 1401 | P2P_DEV_PD_PEER_P2PS); |
Dmitry Shmidt | 444d567 | 2013-04-01 13:08:44 -0700 | [diff] [blame] | 1402 | if (req_config_methods & WPS_CONFIG_DISPLAY) { |
Dmitry Shmidt | b6e9aaf | 2013-05-20 14:49:44 -0700 | [diff] [blame] | 1403 | p2p_dbg(p2p, "Peer " MACSTR |
Dmitry Shmidt | 8d520ff | 2011-05-09 14:06:53 -0700 | [diff] [blame] | 1404 | " accepted to show a PIN on display", MAC2STR(sa)); |
| 1405 | dev->flags |= P2P_DEV_PD_PEER_DISPLAY; |
Dmitry Shmidt | 216983b | 2015-02-06 10:50:36 -0800 | [diff] [blame] | 1406 | passwd_id = DEV_PW_REGISTRAR_SPECIFIED; |
Dmitry Shmidt | 8d520ff | 2011-05-09 14:06:53 -0700 | [diff] [blame] | 1407 | } else if (msg.wps_config_methods & WPS_CONFIG_KEYPAD) { |
Dmitry Shmidt | b6e9aaf | 2013-05-20 14:49:44 -0700 | [diff] [blame] | 1408 | p2p_dbg(p2p, "Peer " MACSTR |
Dmitry Shmidt | 8d520ff | 2011-05-09 14:06:53 -0700 | [diff] [blame] | 1409 | " accepted to write our PIN using keypad", |
| 1410 | MAC2STR(sa)); |
| 1411 | dev->flags |= P2P_DEV_PD_PEER_KEYPAD; |
Dmitry Shmidt | 216983b | 2015-02-06 10:50:36 -0800 | [diff] [blame] | 1412 | passwd_id = DEV_PW_USER_SPECIFIED; |
| 1413 | } else if (msg.wps_config_methods & WPS_CONFIG_P2PS) { |
| 1414 | p2p_dbg(p2p, "Peer " MACSTR " accepted P2PS PIN", |
| 1415 | MAC2STR(sa)); |
| 1416 | dev->flags |= P2P_DEV_PD_PEER_P2PS; |
| 1417 | passwd_id = DEV_PW_P2PS_DEFAULT; |
| 1418 | } |
| 1419 | |
Dmitry Shmidt | d80a401 | 2015-11-05 16:35:40 -0800 | [diff] [blame] | 1420 | if ((status == P2P_SC_SUCCESS || status == P2P_SC_SUCCESS_DEFERRED) && |
Dmitry Shmidt | 216983b | 2015-02-06 10:50:36 -0800 | [diff] [blame] | 1421 | p2p->p2ps_prov) { |
Dmitry Shmidt | d80a401 | 2015-11-05 16:35:40 -0800 | [diff] [blame] | 1422 | dev->oper_freq = 0; |
| 1423 | |
| 1424 | /* |
| 1425 | * Save the reported channel list and operating frequency. |
| 1426 | * Note that the specification mandates that the responder |
| 1427 | * should include in the channel list only channels reported by |
| 1428 | * the initiator, so this is only a sanity check, and if this |
| 1429 | * fails the flow would continue, although it would probably |
| 1430 | * fail. Same is true for the operating channel. |
| 1431 | */ |
| 1432 | if (msg.channel_list && msg.channel_list_len && |
| 1433 | p2p_peer_channels_check(p2p, &p2p->channels, dev, |
| 1434 | msg.channel_list, |
| 1435 | msg.channel_list_len) < 0) |
| 1436 | p2p_dbg(p2p, "P2PS PD Response - no common channels"); |
| 1437 | |
| 1438 | if (msg.operating_channel) { |
| 1439 | if (p2p_channels_includes(&p2p->channels, |
| 1440 | msg.operating_channel[3], |
| 1441 | msg.operating_channel[4]) && |
| 1442 | p2p_channels_includes(&dev->channels, |
| 1443 | msg.operating_channel[3], |
| 1444 | msg.operating_channel[4])) { |
| 1445 | dev->oper_freq = |
| 1446 | p2p_channel_to_freq( |
| 1447 | msg.operating_channel[3], |
| 1448 | msg.operating_channel[4]); |
| 1449 | } else { |
| 1450 | p2p_dbg(p2p, |
| 1451 | "P2PS PD Response - invalid operating channel"); |
| 1452 | } |
| 1453 | } |
| 1454 | |
Dmitry Shmidt | 216983b | 2015-02-06 10:50:36 -0800 | [diff] [blame] | 1455 | if (p2p->cfg->p2ps_prov_complete) { |
Dmitry Shmidt | d80a401 | 2015-11-05 16:35:40 -0800 | [diff] [blame] | 1456 | int freq = 0; |
| 1457 | |
| 1458 | if (conncap == P2PS_SETUP_GROUP_OWNER) { |
| 1459 | u8 tmp; |
| 1460 | |
| 1461 | /* |
| 1462 | * Re-select the operating channel as it is |
| 1463 | * possible that original channel is no longer |
| 1464 | * valid. This should not really fail. |
| 1465 | */ |
| 1466 | if (p2p_go_select_channel(p2p, dev, &tmp) < 0) |
| 1467 | p2p_dbg(p2p, |
| 1468 | "P2PS PD channel selection failed"); |
| 1469 | |
| 1470 | freq = p2p_channel_to_freq(p2p->op_reg_class, |
| 1471 | p2p->op_channel); |
| 1472 | if (freq < 0) |
| 1473 | freq = 0; |
| 1474 | } |
| 1475 | |
Dmitry Shmidt | 216983b | 2015-02-06 10:50:36 -0800 | [diff] [blame] | 1476 | p2p->cfg->p2ps_prov_complete( |
| 1477 | p2p->cfg->cb_ctx, status, sa, adv_mac, |
| 1478 | p2p->p2ps_prov->session_mac, |
| 1479 | group_mac, adv_id, p2p->p2ps_prov->session_id, |
| 1480 | conncap, passwd_id, msg.persistent_ssid, |
Dmitry Shmidt | d80a401 | 2015-11-05 16:35:40 -0800 | [diff] [blame] | 1481 | msg.persistent_ssid_len, 1, 0, NULL, |
Dmitry Shmidt | de47be7 | 2016-01-07 12:52:55 -0800 | [diff] [blame] | 1482 | msg.feature_cap, msg.feature_cap_len, freq, |
| 1483 | msg.group_id ? msg.group_id + ETH_ALEN : NULL, |
| 1484 | msg.group_id ? msg.group_id_len - ETH_ALEN : 0); |
Dmitry Shmidt | 216983b | 2015-02-06 10:50:36 -0800 | [diff] [blame] | 1485 | } |
Dmitry Shmidt | a3dc309 | 2015-06-23 11:21:28 -0700 | [diff] [blame] | 1486 | p2ps_prov_free(p2p); |
Dmitry Shmidt | d80a401 | 2015-11-05 16:35:40 -0800 | [diff] [blame] | 1487 | } else if (status != P2P_SC_SUCCESS && |
| 1488 | status != P2P_SC_FAIL_INFO_CURRENTLY_UNAVAILABLE && |
| 1489 | status != P2P_SC_SUCCESS_DEFERRED && p2p->p2ps_prov) { |
Dmitry Shmidt | 216983b | 2015-02-06 10:50:36 -0800 | [diff] [blame] | 1490 | if (p2p->cfg->p2ps_prov_complete) |
| 1491 | p2p->cfg->p2ps_prov_complete( |
| 1492 | p2p->cfg->cb_ctx, status, sa, adv_mac, |
| 1493 | p2p->p2ps_prov->session_mac, |
| 1494 | group_mac, adv_id, p2p->p2ps_prov->session_id, |
Dmitry Shmidt | de47be7 | 2016-01-07 12:52:55 -0800 | [diff] [blame] | 1495 | 0, 0, NULL, 0, 1, 0, NULL, NULL, 0, 0, NULL, 0); |
Dmitry Shmidt | a3dc309 | 2015-06-23 11:21:28 -0700 | [diff] [blame] | 1496 | p2ps_prov_free(p2p); |
Dmitry Shmidt | 216983b | 2015-02-06 10:50:36 -0800 | [diff] [blame] | 1497 | } |
| 1498 | |
| 1499 | if (status == P2P_SC_FAIL_INFO_CURRENTLY_UNAVAILABLE) { |
| 1500 | if (p2p->cfg->remove_stale_groups) { |
| 1501 | p2p->cfg->remove_stale_groups(p2p->cfg->cb_ctx, |
| 1502 | dev->info.p2p_device_addr, |
| 1503 | NULL, NULL, 0); |
| 1504 | } |
| 1505 | |
| 1506 | if (msg.session_info && msg.session_info_len) { |
| 1507 | size_t info_len = msg.session_info_len; |
| 1508 | char *deferred_sess_resp = os_malloc(2 * info_len + 1); |
| 1509 | |
| 1510 | if (!deferred_sess_resp) { |
| 1511 | p2p_parse_free(&msg); |
Dmitry Shmidt | a3dc309 | 2015-06-23 11:21:28 -0700 | [diff] [blame] | 1512 | p2ps_prov_free(p2p); |
Dmitry Shmidt | 216983b | 2015-02-06 10:50:36 -0800 | [diff] [blame] | 1513 | goto out; |
| 1514 | } |
| 1515 | utf8_escape((char *) msg.session_info, info_len, |
| 1516 | deferred_sess_resp, 2 * info_len + 1); |
| 1517 | |
| 1518 | if (p2p->cfg->prov_disc_fail) |
| 1519 | p2p->cfg->prov_disc_fail( |
| 1520 | p2p->cfg->cb_ctx, sa, |
| 1521 | P2P_PROV_DISC_INFO_UNAVAILABLE, |
| 1522 | adv_id, adv_mac, |
| 1523 | deferred_sess_resp); |
| 1524 | os_free(deferred_sess_resp); |
| 1525 | } else |
| 1526 | if (p2p->cfg->prov_disc_fail) |
| 1527 | p2p->cfg->prov_disc_fail( |
| 1528 | p2p->cfg->cb_ctx, sa, |
| 1529 | P2P_PROV_DISC_INFO_UNAVAILABLE, |
| 1530 | adv_id, adv_mac, NULL); |
Dmitry Shmidt | d80a401 | 2015-11-05 16:35:40 -0800 | [diff] [blame] | 1531 | } else if (status != P2P_SC_SUCCESS) { |
Dmitry Shmidt | 216983b | 2015-02-06 10:50:36 -0800 | [diff] [blame] | 1532 | p2p_dbg(p2p, "Peer rejected our Provision Discovery Request"); |
| 1533 | if (p2p->cfg->prov_disc_fail) |
| 1534 | p2p->cfg->prov_disc_fail(p2p->cfg->cb_ctx, sa, |
Dmitry Shmidt | d80a401 | 2015-11-05 16:35:40 -0800 | [diff] [blame] | 1535 | P2P_PROV_DISC_REJECTED, |
| 1536 | adv_id, adv_mac, NULL); |
Dmitry Shmidt | 216983b | 2015-02-06 10:50:36 -0800 | [diff] [blame] | 1537 | p2p_parse_free(&msg); |
Dmitry Shmidt | a3dc309 | 2015-06-23 11:21:28 -0700 | [diff] [blame] | 1538 | p2ps_prov_free(p2p); |
Dmitry Shmidt | 216983b | 2015-02-06 10:50:36 -0800 | [diff] [blame] | 1539 | goto out; |
Dmitry Shmidt | 8d520ff | 2011-05-09 14:06:53 -0700 | [diff] [blame] | 1540 | } |
Dmitry Shmidt | 1f69aa5 | 2012-01-24 16:10:04 -0800 | [diff] [blame] | 1541 | |
| 1542 | /* Store the provisioning info */ |
| 1543 | dev->wps_prov_info = msg.wps_config_methods; |
Dmitry Shmidt | d80a401 | 2015-11-05 16:35:40 -0800 | [diff] [blame] | 1544 | if (msg.intended_addr) |
| 1545 | os_memcpy(dev->interface_addr, msg.intended_addr, ETH_ALEN); |
Dmitry Shmidt | 1f69aa5 | 2012-01-24 16:10:04 -0800 | [diff] [blame] | 1546 | |
Dmitry Shmidt | 8d520ff | 2011-05-09 14:06:53 -0700 | [diff] [blame] | 1547 | p2p_parse_free(&msg); |
| 1548 | |
| 1549 | out: |
| 1550 | dev->req_config_methods = 0; |
| 1551 | p2p->cfg->send_action_done(p2p->cfg->cb_ctx); |
Dmitry Shmidt | 0494959 | 2012-07-19 12:16:46 -0700 | [diff] [blame] | 1552 | if (dev->flags & P2P_DEV_PD_BEFORE_GO_NEG) { |
Dmitry Shmidt | b6e9aaf | 2013-05-20 14:49:44 -0700 | [diff] [blame] | 1553 | p2p_dbg(p2p, "Start GO Neg after the PD-before-GO-Neg workaround with " |
| 1554 | MACSTR, MAC2STR(dev->info.p2p_device_addr)); |
Dmitry Shmidt | 0494959 | 2012-07-19 12:16:46 -0700 | [diff] [blame] | 1555 | dev->flags &= ~P2P_DEV_PD_BEFORE_GO_NEG; |
| 1556 | p2p_connect_send(p2p, dev); |
| 1557 | return; |
| 1558 | } |
Dmitry Shmidt | d80a401 | 2015-11-05 16:35:40 -0800 | [diff] [blame] | 1559 | |
| 1560 | /* |
| 1561 | * prov_disc_resp callback is used to generate P2P-PROV-DISC-ENTER-PIN, |
| 1562 | * P2P-PROV-DISC-SHOW-PIN, and P2P-PROV-DISC-PBC-REQ events. |
| 1563 | * Call it only for a legacy P2P PD or for P2PS PD scenarios where |
| 1564 | * show/enter PIN events are needed. |
| 1565 | * |
| 1566 | * The callback is called in the following cases: |
| 1567 | * 1. Legacy P2P PD response with a status SUCCESS |
| 1568 | * 2. P2PS, advertiser method: DISPLAY, autoaccept: true, |
| 1569 | * response status: SUCCESS, local method KEYPAD |
| 1570 | * 3. P2PS, advertiser method: KEYPAD,Seeker side, |
| 1571 | * response status: INFO_CURRENTLY_UNAVAILABLE, |
| 1572 | * local method: DISPLAY |
| 1573 | */ |
| 1574 | if (p2p->cfg->prov_disc_resp && |
| 1575 | ((status == P2P_SC_SUCCESS && !adv_id) || |
| 1576 | (p2ps_seeker && status == P2P_SC_SUCCESS && |
| 1577 | passwd_id == DEV_PW_REGISTRAR_SPECIFIED) || |
| 1578 | (p2ps_seeker && |
| 1579 | status == P2P_SC_FAIL_INFO_CURRENTLY_UNAVAILABLE && |
| 1580 | passwd_id == DEV_PW_USER_SPECIFIED))) |
Dmitry Shmidt | 8d520ff | 2011-05-09 14:06:53 -0700 | [diff] [blame] | 1581 | p2p->cfg->prov_disc_resp(p2p->cfg->cb_ctx, sa, |
| 1582 | report_config_methods); |
Dmitry Shmidt | 37d4d6a | 2013-03-18 13:09:42 -0700 | [diff] [blame] | 1583 | |
| 1584 | if (p2p->state == P2P_PD_DURING_FIND) { |
Dmitry Shmidt | 9839ecd | 2016-11-07 11:05:47 -0800 | [diff] [blame] | 1585 | p2p_stop_listen_for_freq(p2p, 0); |
Dmitry Shmidt | 37d4d6a | 2013-03-18 13:09:42 -0700 | [diff] [blame] | 1586 | p2p_continue_find(p2p); |
| 1587 | } |
Dmitry Shmidt | 8d520ff | 2011-05-09 14:06:53 -0700 | [diff] [blame] | 1588 | } |
| 1589 | |
| 1590 | |
| 1591 | int p2p_send_prov_disc_req(struct p2p_data *p2p, struct p2p_device *dev, |
Dmitry Shmidt | 1f69aa5 | 2012-01-24 16:10:04 -0800 | [diff] [blame] | 1592 | int join, int force_freq) |
Dmitry Shmidt | 8d520ff | 2011-05-09 14:06:53 -0700 | [diff] [blame] | 1593 | { |
| 1594 | struct wpabuf *req; |
| 1595 | int freq; |
Dmitry Shmidt | 497c1d5 | 2011-07-21 15:19:46 -0700 | [diff] [blame] | 1596 | |
Dmitry Shmidt | 1f69aa5 | 2012-01-24 16:10:04 -0800 | [diff] [blame] | 1597 | if (force_freq > 0) |
| 1598 | freq = force_freq; |
| 1599 | else |
| 1600 | freq = dev->listen_freq > 0 ? dev->listen_freq : |
| 1601 | dev->oper_freq; |
Dmitry Shmidt | 8d520ff | 2011-05-09 14:06:53 -0700 | [diff] [blame] | 1602 | if (freq <= 0) { |
Dmitry Shmidt | b6e9aaf | 2013-05-20 14:49:44 -0700 | [diff] [blame] | 1603 | p2p_dbg(p2p, "No Listen/Operating frequency known for the peer " |
| 1604 | MACSTR " to send Provision Discovery Request", |
Dmitry Shmidt | 8d520ff | 2011-05-09 14:06:53 -0700 | [diff] [blame] | 1605 | MAC2STR(dev->info.p2p_device_addr)); |
| 1606 | return -1; |
| 1607 | } |
| 1608 | |
| 1609 | if (dev->flags & P2P_DEV_GROUP_CLIENT_ONLY) { |
| 1610 | if (!(dev->info.dev_capab & |
| 1611 | P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY)) { |
Dmitry Shmidt | b6e9aaf | 2013-05-20 14:49:44 -0700 | [diff] [blame] | 1612 | p2p_dbg(p2p, "Cannot use PD with P2P Device " MACSTR |
Dmitry Shmidt | 8d520ff | 2011-05-09 14:06:53 -0700 | [diff] [blame] | 1613 | " that is in a group and is not discoverable", |
| 1614 | MAC2STR(dev->info.p2p_device_addr)); |
| 1615 | return -1; |
| 1616 | } |
| 1617 | /* TODO: use device discoverability request through GO */ |
| 1618 | } |
| 1619 | |
Dmitry Shmidt | 216983b | 2015-02-06 10:50:36 -0800 | [diff] [blame] | 1620 | if (p2p->p2ps_prov) { |
| 1621 | if (p2p->p2ps_prov->status == P2P_SC_SUCCESS_DEFERRED) { |
| 1622 | if (p2p->p2ps_prov->method == WPS_CONFIG_DISPLAY) |
| 1623 | dev->req_config_methods = WPS_CONFIG_KEYPAD; |
| 1624 | else if (p2p->p2ps_prov->method == WPS_CONFIG_KEYPAD) |
| 1625 | dev->req_config_methods = WPS_CONFIG_DISPLAY; |
| 1626 | else |
| 1627 | dev->req_config_methods = WPS_CONFIG_P2PS; |
| 1628 | } else { |
| 1629 | /* Order of preference, based on peer's capabilities */ |
| 1630 | if (p2p->p2ps_prov->method) |
| 1631 | dev->req_config_methods = |
| 1632 | p2p->p2ps_prov->method; |
| 1633 | else if (dev->info.config_methods & WPS_CONFIG_P2PS) |
| 1634 | dev->req_config_methods = WPS_CONFIG_P2PS; |
| 1635 | else if (dev->info.config_methods & WPS_CONFIG_DISPLAY) |
| 1636 | dev->req_config_methods = WPS_CONFIG_DISPLAY; |
| 1637 | else |
| 1638 | dev->req_config_methods = WPS_CONFIG_KEYPAD; |
| 1639 | } |
| 1640 | p2p_dbg(p2p, |
| 1641 | "Building PD Request based on P2PS config method 0x%x status %d --> req_config_methods 0x%x", |
| 1642 | p2p->p2ps_prov->method, p2p->p2ps_prov->status, |
| 1643 | dev->req_config_methods); |
Dmitry Shmidt | d80a401 | 2015-11-05 16:35:40 -0800 | [diff] [blame] | 1644 | |
| 1645 | if (p2p_prepare_channel(p2p, dev, p2p->p2ps_prov->force_freq, |
| 1646 | p2p->p2ps_prov->pref_freq, 1) < 0) |
| 1647 | return -1; |
Dmitry Shmidt | 216983b | 2015-02-06 10:50:36 -0800 | [diff] [blame] | 1648 | } |
| 1649 | |
| 1650 | req = p2p_build_prov_disc_req(p2p, dev, join); |
Dmitry Shmidt | 8d520ff | 2011-05-09 14:06:53 -0700 | [diff] [blame] | 1651 | if (req == NULL) |
| 1652 | return -1; |
| 1653 | |
Dmitry Shmidt | 0494959 | 2012-07-19 12:16:46 -0700 | [diff] [blame] | 1654 | if (p2p->state != P2P_IDLE) |
| 1655 | p2p_stop_listen_for_freq(p2p, freq); |
Dmitry Shmidt | 8d520ff | 2011-05-09 14:06:53 -0700 | [diff] [blame] | 1656 | p2p->pending_action_state = P2P_PENDING_PD; |
| 1657 | if (p2p_send_action(p2p, freq, dev->info.p2p_device_addr, |
| 1658 | p2p->cfg->dev_addr, dev->info.p2p_device_addr, |
| 1659 | wpabuf_head(req), wpabuf_len(req), 200) < 0) { |
Dmitry Shmidt | b6e9aaf | 2013-05-20 14:49:44 -0700 | [diff] [blame] | 1660 | p2p_dbg(p2p, "Failed to send Action frame"); |
Dmitry Shmidt | 8d520ff | 2011-05-09 14:06:53 -0700 | [diff] [blame] | 1661 | wpabuf_free(req); |
| 1662 | return -1; |
| 1663 | } |
| 1664 | |
Jouni Malinen | 75ecf52 | 2011-06-27 15:19:46 -0700 | [diff] [blame] | 1665 | os_memcpy(p2p->pending_pd_devaddr, dev->info.p2p_device_addr, ETH_ALEN); |
| 1666 | |
Dmitry Shmidt | 8d520ff | 2011-05-09 14:06:53 -0700 | [diff] [blame] | 1667 | wpabuf_free(req); |
| 1668 | return 0; |
| 1669 | } |
| 1670 | |
| 1671 | |
| 1672 | int p2p_prov_disc_req(struct p2p_data *p2p, const u8 *peer_addr, |
Dmitry Shmidt | 216983b | 2015-02-06 10:50:36 -0800 | [diff] [blame] | 1673 | struct p2ps_provision *p2ps_prov, |
Dmitry Shmidt | d5e4923 | 2012-12-03 15:08:10 -0800 | [diff] [blame] | 1674 | u16 config_methods, int join, int force_freq, |
| 1675 | int user_initiated_pd) |
Dmitry Shmidt | 8d520ff | 2011-05-09 14:06:53 -0700 | [diff] [blame] | 1676 | { |
| 1677 | struct p2p_device *dev; |
| 1678 | |
| 1679 | dev = p2p_get_device(p2p, peer_addr); |
| 1680 | if (dev == NULL) |
| 1681 | dev = p2p_get_device_interface(p2p, peer_addr); |
| 1682 | if (dev == NULL || (dev->flags & P2P_DEV_PROBE_REQ_ONLY)) { |
Dmitry Shmidt | b6e9aaf | 2013-05-20 14:49:44 -0700 | [diff] [blame] | 1683 | p2p_dbg(p2p, "Provision Discovery Request destination " MACSTR |
Dmitry Shmidt | 8d520ff | 2011-05-09 14:06:53 -0700 | [diff] [blame] | 1684 | " not yet known", MAC2STR(peer_addr)); |
Dmitry Shmidt | 216983b | 2015-02-06 10:50:36 -0800 | [diff] [blame] | 1685 | os_free(p2ps_prov); |
Dmitry Shmidt | 8d520ff | 2011-05-09 14:06:53 -0700 | [diff] [blame] | 1686 | return -1; |
| 1687 | } |
| 1688 | |
Dmitry Shmidt | b6e9aaf | 2013-05-20 14:49:44 -0700 | [diff] [blame] | 1689 | p2p_dbg(p2p, "Provision Discovery Request with " MACSTR |
| 1690 | " (config methods 0x%x)", |
Dmitry Shmidt | 8d520ff | 2011-05-09 14:06:53 -0700 | [diff] [blame] | 1691 | MAC2STR(peer_addr), config_methods); |
Dmitry Shmidt | 216983b | 2015-02-06 10:50:36 -0800 | [diff] [blame] | 1692 | if (config_methods == 0 && !p2ps_prov) { |
| 1693 | os_free(p2ps_prov); |
Dmitry Shmidt | 8d520ff | 2011-05-09 14:06:53 -0700 | [diff] [blame] | 1694 | return -1; |
Dmitry Shmidt | 216983b | 2015-02-06 10:50:36 -0800 | [diff] [blame] | 1695 | } |
| 1696 | |
| 1697 | if (p2ps_prov && p2ps_prov->status == P2P_SC_SUCCESS_DEFERRED && |
| 1698 | p2p->p2ps_prov) { |
| 1699 | /* Use cached method from deferred provisioning */ |
| 1700 | p2ps_prov->method = p2p->p2ps_prov->method; |
| 1701 | } |
Dmitry Shmidt | 8d520ff | 2011-05-09 14:06:53 -0700 | [diff] [blame] | 1702 | |
Dmitry Shmidt | 1f69aa5 | 2012-01-24 16:10:04 -0800 | [diff] [blame] | 1703 | /* Reset provisioning info */ |
| 1704 | dev->wps_prov_info = 0; |
Dmitry Shmidt | a3dc309 | 2015-06-23 11:21:28 -0700 | [diff] [blame] | 1705 | p2ps_prov_free(p2p); |
Dmitry Shmidt | 216983b | 2015-02-06 10:50:36 -0800 | [diff] [blame] | 1706 | p2p->p2ps_prov = p2ps_prov; |
Dmitry Shmidt | 1f69aa5 | 2012-01-24 16:10:04 -0800 | [diff] [blame] | 1707 | |
Dmitry Shmidt | 8d520ff | 2011-05-09 14:06:53 -0700 | [diff] [blame] | 1708 | dev->req_config_methods = config_methods; |
| 1709 | if (join) |
| 1710 | dev->flags |= P2P_DEV_PD_FOR_JOIN; |
| 1711 | else |
| 1712 | dev->flags &= ~P2P_DEV_PD_FOR_JOIN; |
| 1713 | |
Dmitry Shmidt | c5ec7f5 | 2012-03-06 16:33:24 -0800 | [diff] [blame] | 1714 | if (p2p->state != P2P_IDLE && p2p->state != P2P_SEARCH && |
| 1715 | p2p->state != P2P_LISTEN_ONLY) { |
Dmitry Shmidt | b6e9aaf | 2013-05-20 14:49:44 -0700 | [diff] [blame] | 1716 | p2p_dbg(p2p, "Busy with other operations; postpone Provision Discovery Request with " |
| 1717 | MACSTR " (config methods 0x%x)", |
Dmitry Shmidt | 8d520ff | 2011-05-09 14:06:53 -0700 | [diff] [blame] | 1718 | MAC2STR(peer_addr), config_methods); |
| 1719 | return 0; |
| 1720 | } |
| 1721 | |
Dmitry Shmidt | d5e4923 | 2012-12-03 15:08:10 -0800 | [diff] [blame] | 1722 | p2p->user_initiated_pd = user_initiated_pd; |
Dmitry Shmidt | 051af73 | 2013-10-22 13:52:46 -0700 | [diff] [blame] | 1723 | p2p->pd_force_freq = force_freq; |
Jouni Malinen | 75ecf52 | 2011-06-27 15:19:46 -0700 | [diff] [blame] | 1724 | |
Dmitry Shmidt | 61d9df3 | 2012-08-29 16:22:06 -0700 | [diff] [blame] | 1725 | if (p2p->user_initiated_pd) |
Jouni Malinen | 75ecf52 | 2011-06-27 15:19:46 -0700 | [diff] [blame] | 1726 | p2p->pd_retries = MAX_PROV_DISC_REQ_RETRIES; |
| 1727 | |
Dmitry Shmidt | a54fa5f | 2013-01-15 13:53:35 -0800 | [diff] [blame] | 1728 | /* |
| 1729 | * Assign dialog token here to use the same value in each retry within |
| 1730 | * the same PD exchange. |
| 1731 | */ |
| 1732 | dev->dialog_token++; |
| 1733 | if (dev->dialog_token == 0) |
| 1734 | dev->dialog_token = 1; |
| 1735 | |
Dmitry Shmidt | 1f69aa5 | 2012-01-24 16:10:04 -0800 | [diff] [blame] | 1736 | return p2p_send_prov_disc_req(p2p, dev, join, force_freq); |
Dmitry Shmidt | 8d520ff | 2011-05-09 14:06:53 -0700 | [diff] [blame] | 1737 | } |
Jouni Malinen | 75ecf52 | 2011-06-27 15:19:46 -0700 | [diff] [blame] | 1738 | |
| 1739 | |
| 1740 | void p2p_reset_pending_pd(struct p2p_data *p2p) |
| 1741 | { |
Dmitry Shmidt | 1f69aa5 | 2012-01-24 16:10:04 -0800 | [diff] [blame] | 1742 | struct p2p_device *dev; |
| 1743 | |
| 1744 | dl_list_for_each(dev, &p2p->devices, struct p2p_device, list) { |
| 1745 | if (os_memcmp(p2p->pending_pd_devaddr, |
| 1746 | dev->info.p2p_device_addr, ETH_ALEN)) |
| 1747 | continue; |
| 1748 | if (!dev->req_config_methods) |
| 1749 | continue; |
| 1750 | if (dev->flags & P2P_DEV_PD_FOR_JOIN) |
| 1751 | continue; |
| 1752 | /* Reset the config methods of the device */ |
| 1753 | dev->req_config_methods = 0; |
| 1754 | } |
| 1755 | |
Jouni Malinen | 75ecf52 | 2011-06-27 15:19:46 -0700 | [diff] [blame] | 1756 | p2p->user_initiated_pd = 0; |
| 1757 | os_memset(p2p->pending_pd_devaddr, 0, ETH_ALEN); |
| 1758 | p2p->pd_retries = 0; |
Dmitry Shmidt | 051af73 | 2013-10-22 13:52:46 -0700 | [diff] [blame] | 1759 | p2p->pd_force_freq = 0; |
Jouni Malinen | 75ecf52 | 2011-06-27 15:19:46 -0700 | [diff] [blame] | 1760 | } |
Dmitry Shmidt | a3dc309 | 2015-06-23 11:21:28 -0700 | [diff] [blame] | 1761 | |
| 1762 | |
| 1763 | void p2ps_prov_free(struct p2p_data *p2p) |
| 1764 | { |
| 1765 | os_free(p2p->p2ps_prov); |
| 1766 | p2p->p2ps_prov = NULL; |
| 1767 | } |