1 /* 2 * Wi-Fi Protected Setup - internal definitions 3 * Copyright (c) 2008-2012, Jouni Malinen <j@w1.fi> 4 * 5 * This software may be distributed under the terms of the BSD license. 6 * See README for more details. 7 */ 8 9 #ifndef WPS_I_H 10 #define WPS_I_H 11 12 #include "wps.h" 13 #include "wps_attr_parse.h" 14 15 struct wps_nfc_pw_token; 16 17 /** 18 * struct wps_data - WPS registration protocol data 19 * 20 * This data is stored at the EAP-WSC server/peer method and it is kept for a 21 * single registration protocol run. 22 */ 23 struct wps_data { 24 /** 25 * wps - Pointer to long term WPS context 26 */ 27 struct wps_context *wps; 28 29 /** 30 * registrar - Whether this end is a Registrar 31 */ 32 int registrar; 33 34 /** 35 * er - Whether the local end is an external registrar 36 */ 37 int er; 38 39 enum { 40 /* Enrollee states */ 41 SEND_M1, RECV_M2, SEND_M3, RECV_M4, SEND_M5, RECV_M6, SEND_M7, 42 RECV_M8, RECEIVED_M2D, WPS_MSG_DONE, RECV_ACK, WPS_FINISHED, 43 SEND_WSC_NACK, 44 45 /* Registrar states */ 46 RECV_M1, SEND_M2, RECV_M3, SEND_M4, RECV_M5, SEND_M6, 47 RECV_M7, SEND_M8, RECV_DONE, SEND_M2D, RECV_M2D_ACK 48 } state; 49 50 u8 uuid_e[WPS_UUID_LEN]; 51 u8 uuid_r[WPS_UUID_LEN]; 52 u8 mac_addr_e[ETH_ALEN]; 53 u8 nonce_e[WPS_NONCE_LEN]; 54 u8 nonce_r[WPS_NONCE_LEN]; 55 u8 psk1[WPS_PSK_LEN]; 56 u8 psk2[WPS_PSK_LEN]; 57 u8 snonce[2 * WPS_SECRET_NONCE_LEN]; 58 u8 peer_hash1[WPS_HASH_LEN]; 59 u8 peer_hash2[WPS_HASH_LEN]; 60 61 struct wpabuf *dh_privkey; 62 struct wpabuf *dh_pubkey_e; 63 struct wpabuf *dh_pubkey_r; 64 u8 authkey[WPS_AUTHKEY_LEN]; 65 u8 keywrapkey[WPS_KEYWRAPKEY_LEN]; 66 u8 emsk[WPS_EMSK_LEN]; 67 68 struct wpabuf *last_msg; 69 70 u8 *dev_password; 71 size_t dev_password_len; 72 u16 dev_pw_id; 73 int pbc; 74 u8 *alt_dev_password; 75 size_t alt_dev_password_len; 76 u16 alt_dev_pw_id; 77 78 /** 79 * request_type - Request Type attribute from (Re)AssocReq 80 */ 81 u8 request_type; 82 83 /** 84 * encr_type - Available encryption types 85 */ 86 u16 encr_type; 87 88 /** 89 * auth_type - Available authentication types 90 */ 91 u16 auth_type; 92 93 u8 *new_psk; 94 size_t new_psk_len; 95 96 int wps_pin_revealed; 97 struct wps_credential cred; 98 99 struct wps_device_data peer_dev; 100 101 /** 102 * config_error - Configuration Error value to be used in NACK 103 */ 104 u16 config_error; 105 u16 error_indication; 106 107 int ext_reg; 108 int int_reg; 109 110 struct wps_credential *new_ap_settings; 111 112 void *dh_ctx; 113 114 void (*ap_settings_cb)(void *ctx, const struct wps_credential *cred); 115 void *ap_settings_cb_ctx; 116 117 struct wps_credential *use_cred; 118 119 int use_psk_key; 120 u8 p2p_dev_addr[ETH_ALEN]; /* P2P Device Address of the client or 121 * 00:00:00:00:00:00 if not a P2p client */ 122 int pbc_in_m1; 123 124 struct wps_nfc_pw_token *nfc_pw_token; 125 }; 126 127 128 /* wps_common.c */ 129 void wps_kdf(const u8 *key, const u8 *label_prefix, size_t label_prefix_len, 130 const char *label, u8 *res, size_t res_len); 131 int wps_derive_keys(struct wps_data *wps); 132 void wps_derive_psk(struct wps_data *wps, const u8 *dev_passwd, 133 size_t dev_passwd_len); 134 struct wpabuf * wps_decrypt_encr_settings(struct wps_data *wps, const u8 *encr, 135 size_t encr_len); 136 void wps_fail_event(struct wps_context *wps, enum wps_msg_type msg, 137 u16 config_error, u16 error_indication, const u8 *mac_addr); 138 void wps_success_event(struct wps_context *wps, const u8 *mac_addr); 139 void wps_pwd_auth_fail_event(struct wps_context *wps, int enrollee, int part, 140 const u8 *mac_addr); 141 void wps_pbc_overlap_event(struct wps_context *wps); 142 void wps_pbc_timeout_event(struct wps_context *wps); 143 void wps_pbc_active_event(struct wps_context *wps); 144 void wps_pbc_disable_event(struct wps_context *wps); 145 146 struct wpabuf * wps_build_wsc_ack(struct wps_data *wps); 147 struct wpabuf * wps_build_wsc_nack(struct wps_data *wps); 148 149 /* wps_attr_build.c */ 150 int wps_build_public_key(struct wps_data *wps, struct wpabuf *msg); 151 int wps_build_req_type(struct wpabuf *msg, enum wps_request_type type); 152 int wps_build_resp_type(struct wpabuf *msg, enum wps_response_type type); 153 int wps_build_config_methods(struct wpabuf *msg, u16 methods); 154 int wps_build_uuid_e(struct wpabuf *msg, const u8 *uuid); 155 int wps_build_dev_password_id(struct wpabuf *msg, u16 id); 156 int wps_build_config_error(struct wpabuf *msg, u16 err); 157 int wps_build_authenticator(struct wps_data *wps, struct wpabuf *msg); 158 int wps_build_key_wrap_auth(struct wps_data *wps, struct wpabuf *msg); 159 int wps_build_encr_settings(struct wps_data *wps, struct wpabuf *msg, 160 struct wpabuf *plain); 161 int wps_build_version(struct wpabuf *msg); 162 int wps_build_wfa_ext(struct wpabuf *msg, int req_to_enroll, 163 const u8 *auth_macs, size_t auth_macs_count); 164 int wps_build_msg_type(struct wpabuf *msg, enum wps_msg_type msg_type); 165 int wps_build_enrollee_nonce(struct wps_data *wps, struct wpabuf *msg); 166 int wps_build_registrar_nonce(struct wps_data *wps, struct wpabuf *msg); 167 int wps_build_auth_type_flags(struct wps_data *wps, struct wpabuf *msg); 168 int wps_build_encr_type_flags(struct wps_data *wps, struct wpabuf *msg); 169 int wps_build_conn_type_flags(struct wps_data *wps, struct wpabuf *msg); 170 int wps_build_assoc_state(struct wps_data *wps, struct wpabuf *msg); 171 int wps_build_oob_dev_pw(struct wpabuf *msg, u16 dev_pw_id, 172 const struct wpabuf *pubkey, const u8 *dev_pw, 173 size_t dev_pw_len); 174 struct wpabuf * wps_ie_encapsulate(struct wpabuf *data); 175 int wps_build_mac_addr(struct wpabuf *msg, const u8 *addr); 176 177 /* wps_attr_process.c */ 178 int wps_process_authenticator(struct wps_data *wps, const u8 *authenticator, 179 const struct wpabuf *msg); 180 int wps_process_key_wrap_auth(struct wps_data *wps, struct wpabuf *msg, 181 const u8 *key_wrap_auth); 182 int wps_process_cred(struct wps_parse_attr *attr, 183 struct wps_credential *cred); 184 int wps_process_ap_settings(struct wps_parse_attr *attr, 185 struct wps_credential *cred); 186 187 /* wps_enrollee.c */ 188 struct wpabuf * wps_enrollee_get_msg(struct wps_data *wps, 189 enum wsc_op_code *op_code); 190 enum wps_process_res wps_enrollee_process_msg(struct wps_data *wps, 191 enum wsc_op_code op_code, 192 const struct wpabuf *msg); 193 194 /* wps_registrar.c */ 195 struct wpabuf * wps_registrar_get_msg(struct wps_data *wps, 196 enum wsc_op_code *op_code); 197 enum wps_process_res wps_registrar_process_msg(struct wps_data *wps, 198 enum wsc_op_code op_code, 199 const struct wpabuf *msg); 200 int wps_build_cred(struct wps_data *wps, struct wpabuf *msg); 201 int wps_device_store(struct wps_registrar *reg, 202 struct wps_device_data *dev, const u8 *uuid); 203 void wps_registrar_selected_registrar_changed(struct wps_registrar *reg, 204 u16 dev_pw_id); 205 const u8 * wps_authorized_macs(struct wps_registrar *reg, size_t *count); 206 int wps_registrar_pbc_overlap(struct wps_registrar *reg, 207 const u8 *addr, const u8 *uuid_e); 208 void wps_registrar_remove_nfc_pw_token(struct wps_registrar *reg, 209 struct wps_nfc_pw_token *token); 210 211 #endif /* WPS_I_H */ 212