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 75 /** 76 * request_type - Request Type attribute from (Re)AssocReq 77 */ 78 u8 request_type; 79 80 /** 81 * encr_type - Available encryption types 82 */ 83 u16 encr_type; 84 85 /** 86 * auth_type - Available authentication types 87 */ 88 u16 auth_type; 89 90 u8 *new_psk; 91 size_t new_psk_len; 92 93 int wps_pin_revealed; 94 struct wps_credential cred; 95 96 struct wps_device_data peer_dev; 97 98 /** 99 * config_error - Configuration Error value to be used in NACK 100 */ 101 u16 config_error; 102 u16 error_indication; 103 104 int ext_reg; 105 int int_reg; 106 107 struct wps_credential *new_ap_settings; 108 109 void *dh_ctx; 110 111 void (*ap_settings_cb)(void *ctx, const struct wps_credential *cred); 112 void *ap_settings_cb_ctx; 113 114 struct wps_credential *use_cred; 115 116 int use_psk_key; 117 u8 p2p_dev_addr[ETH_ALEN]; /* P2P Device Address of the client or 118 * 00:00:00:00:00:00 if not a P2p client */ 119 int pbc_in_m1; 120 121 struct wps_nfc_pw_token *nfc_pw_token; 122 }; 123 124 125 /* wps_common.c */ 126 void wps_kdf(const u8 *key, const u8 *label_prefix, size_t label_prefix_len, 127 const char *label, u8 *res, size_t res_len); 128 int wps_derive_keys(struct wps_data *wps); 129 void wps_derive_psk(struct wps_data *wps, const u8 *dev_passwd, 130 size_t dev_passwd_len); 131 struct wpabuf * wps_decrypt_encr_settings(struct wps_data *wps, const u8 *encr, 132 size_t encr_len); 133 void wps_fail_event(struct wps_context *wps, enum wps_msg_type msg, 134 u16 config_error, u16 error_indication); 135 void wps_success_event(struct wps_context *wps); 136 void wps_pwd_auth_fail_event(struct wps_context *wps, int enrollee, int part); 137 void wps_pbc_overlap_event(struct wps_context *wps); 138 void wps_pbc_timeout_event(struct wps_context *wps); 139 140 struct wpabuf * wps_build_wsc_ack(struct wps_data *wps); 141 struct wpabuf * wps_build_wsc_nack(struct wps_data *wps); 142 143 /* wps_attr_build.c */ 144 int wps_build_public_key(struct wps_data *wps, struct wpabuf *msg); 145 int wps_build_req_type(struct wpabuf *msg, enum wps_request_type type); 146 int wps_build_resp_type(struct wpabuf *msg, enum wps_response_type type); 147 int wps_build_config_methods(struct wpabuf *msg, u16 methods); 148 int wps_build_uuid_e(struct wpabuf *msg, const u8 *uuid); 149 int wps_build_dev_password_id(struct wpabuf *msg, u16 id); 150 int wps_build_config_error(struct wpabuf *msg, u16 err); 151 int wps_build_authenticator(struct wps_data *wps, struct wpabuf *msg); 152 int wps_build_key_wrap_auth(struct wps_data *wps, struct wpabuf *msg); 153 int wps_build_encr_settings(struct wps_data *wps, struct wpabuf *msg, 154 struct wpabuf *plain); 155 int wps_build_version(struct wpabuf *msg); 156 int wps_build_wfa_ext(struct wpabuf *msg, int req_to_enroll, 157 const u8 *auth_macs, size_t auth_macs_count); 158 int wps_build_msg_type(struct wpabuf *msg, enum wps_msg_type msg_type); 159 int wps_build_enrollee_nonce(struct wps_data *wps, struct wpabuf *msg); 160 int wps_build_registrar_nonce(struct wps_data *wps, struct wpabuf *msg); 161 int wps_build_auth_type_flags(struct wps_data *wps, struct wpabuf *msg); 162 int wps_build_encr_type_flags(struct wps_data *wps, struct wpabuf *msg); 163 int wps_build_conn_type_flags(struct wps_data *wps, struct wpabuf *msg); 164 int wps_build_assoc_state(struct wps_data *wps, struct wpabuf *msg); 165 int wps_build_oob_dev_pw(struct wpabuf *msg, u16 dev_pw_id, 166 const struct wpabuf *pubkey, const u8 *dev_pw, 167 size_t dev_pw_len); 168 struct wpabuf * wps_ie_encapsulate(struct wpabuf *data); 169 170 /* wps_attr_process.c */ 171 int wps_process_authenticator(struct wps_data *wps, const u8 *authenticator, 172 const struct wpabuf *msg); 173 int wps_process_key_wrap_auth(struct wps_data *wps, struct wpabuf *msg, 174 const u8 *key_wrap_auth); 175 int wps_process_cred(struct wps_parse_attr *attr, 176 struct wps_credential *cred); 177 int wps_process_ap_settings(struct wps_parse_attr *attr, 178 struct wps_credential *cred); 179 180 /* wps_enrollee.c */ 181 struct wpabuf * wps_enrollee_get_msg(struct wps_data *wps, 182 enum wsc_op_code *op_code); 183 enum wps_process_res wps_enrollee_process_msg(struct wps_data *wps, 184 enum wsc_op_code op_code, 185 const struct wpabuf *msg); 186 187 /* wps_registrar.c */ 188 struct wpabuf * wps_registrar_get_msg(struct wps_data *wps, 189 enum wsc_op_code *op_code); 190 enum wps_process_res wps_registrar_process_msg(struct wps_data *wps, 191 enum wsc_op_code op_code, 192 const struct wpabuf *msg); 193 int wps_build_cred(struct wps_data *wps, struct wpabuf *msg); 194 int wps_device_store(struct wps_registrar *reg, 195 struct wps_device_data *dev, const u8 *uuid); 196 void wps_registrar_selected_registrar_changed(struct wps_registrar *reg); 197 const u8 * wps_authorized_macs(struct wps_registrar *reg, size_t *count); 198 int wps_registrar_pbc_overlap(struct wps_registrar *reg, 199 const u8 *addr, const u8 *uuid_e); 200 void wps_registrar_remove_nfc_pw_token(struct wps_registrar *reg, 201 struct wps_nfc_pw_token *token); 202 203 #endif /* WPS_I_H */ 204