1 /* 2 * Wi-Fi Protected Setup - internal definitions 3 * Copyright (c) 2008, Jouni Malinen <j (at) w1.fi> 4 * 5 * This program is free software; you can redistribute it and/or modify 6 * it under the terms of the GNU General Public License version 2 as 7 * published by the Free Software Foundation. 8 * 9 * Alternatively, this software may be distributed under the terms of BSD 10 * license. 11 * 12 * See README and COPYING for more details. 13 */ 14 15 #ifndef WPS_I_H 16 #define WPS_I_H 17 18 #include "wps.h" 19 20 /** 21 * struct wps_data - WPS registration protocol data 22 * 23 * This data is stored at the EAP-WSC server/peer method and it is kept for a 24 * single registration protocol run. 25 */ 26 struct wps_data { 27 /** 28 * wps - Pointer to long term WPS context 29 */ 30 struct wps_context *wps; 31 32 /** 33 * registrar - Whether this end is a Registrar 34 */ 35 int registrar; 36 37 enum { 38 /* Enrollee states */ 39 SEND_M1, RECV_M2, SEND_M3, RECV_M4, SEND_M5, RECV_M6, SEND_M7, 40 RECV_M8, RECEIVED_M2D, WPS_MSG_DONE, RECV_ACK, WPS_FINISHED, 41 SEND_WSC_NACK, 42 43 /* Registrar states */ 44 RECV_M1, SEND_M2, RECV_M3, SEND_M4, RECV_M5, SEND_M6, 45 RECV_M7, SEND_M8, RECV_DONE, SEND_M2D, RECV_M2D_ACK 46 } state; 47 48 u8 uuid_e[WPS_UUID_LEN]; 49 u8 uuid_r[WPS_UUID_LEN]; 50 u8 mac_addr_e[ETH_ALEN]; 51 u8 nonce_e[WPS_NONCE_LEN]; 52 u8 nonce_r[WPS_NONCE_LEN]; 53 u8 psk1[WPS_PSK_LEN]; 54 u8 psk2[WPS_PSK_LEN]; 55 u8 snonce[2 * WPS_SECRET_NONCE_LEN]; 56 u8 peer_hash1[WPS_HASH_LEN]; 57 u8 peer_hash2[WPS_HASH_LEN]; 58 59 struct wpabuf *dh_privkey; 60 struct wpabuf *dh_pubkey_e; 61 struct wpabuf *dh_pubkey_r; 62 u8 authkey[WPS_AUTHKEY_LEN]; 63 u8 keywrapkey[WPS_KEYWRAPKEY_LEN]; 64 u8 emsk[WPS_EMSK_LEN]; 65 66 struct wpabuf *last_msg; 67 68 u8 *dev_password; 69 size_t dev_password_len; 70 u16 dev_pw_id; 71 int pbc; 72 73 /** 74 * request_type - Request Type attribute from (Re)AssocReq 75 */ 76 u8 request_type; 77 78 /** 79 * encr_type - Available encryption types 80 */ 81 u16 encr_type; 82 83 /** 84 * auth_type - Available authentication types 85 */ 86 u16 auth_type; 87 88 u8 *new_psk; 89 size_t new_psk_len; 90 91 int wps_pin_revealed; 92 struct wps_credential cred; 93 94 struct wps_device_data peer_dev; 95 96 /** 97 * config_error - Configuration Error value to be used in NACK 98 */ 99 u16 config_error; 100 101 int ext_reg; 102 }; 103 104 105 struct wps_parse_attr { 106 /* fixed length fields */ 107 const u8 *version; /* 1 octet */ 108 const u8 *msg_type; /* 1 octet */ 109 const u8 *enrollee_nonce; /* WPS_NONCE_LEN (16) octets */ 110 const u8 *registrar_nonce; /* WPS_NONCE_LEN (16) octets */ 111 const u8 *uuid_r; /* WPS_UUID_LEN (16) octets */ 112 const u8 *uuid_e; /* WPS_UUID_LEN (16) octets */ 113 const u8 *auth_type_flags; /* 2 octets */ 114 const u8 *encr_type_flags; /* 2 octets */ 115 const u8 *conn_type_flags; /* 1 octet */ 116 const u8 *config_methods; /* 2 octets */ 117 const u8 *sel_reg_config_methods; /* 2 octets */ 118 const u8 *primary_dev_type; /* 8 octets */ 119 const u8 *rf_bands; /* 1 octet */ 120 const u8 *assoc_state; /* 2 octets */ 121 const u8 *config_error; /* 2 octets */ 122 const u8 *dev_password_id; /* 2 octets */ 123 const u8 *os_version; /* 4 octets */ 124 const u8 *wps_state; /* 1 octet */ 125 const u8 *authenticator; /* WPS_AUTHENTICATOR_LEN (8) octets */ 126 const u8 *r_hash1; /* WPS_HASH_LEN (32) octets */ 127 const u8 *r_hash2; /* WPS_HASH_LEN (32) octets */ 128 const u8 *e_hash1; /* WPS_HASH_LEN (32) octets */ 129 const u8 *e_hash2; /* WPS_HASH_LEN (32) octets */ 130 const u8 *r_snonce1; /* WPS_SECRET_NONCE_LEN (16) octets */ 131 const u8 *r_snonce2; /* WPS_SECRET_NONCE_LEN (16) octets */ 132 const u8 *e_snonce1; /* WPS_SECRET_NONCE_LEN (16) octets */ 133 const u8 *e_snonce2; /* WPS_SECRET_NONCE_LEN (16) octets */ 134 const u8 *key_wrap_auth; /* WPS_KWA_LEN (8) octets */ 135 const u8 *auth_type; /* 2 octets */ 136 const u8 *encr_type; /* 2 octets */ 137 const u8 *network_idx; /* 1 octet */ 138 const u8 *network_key_idx; /* 1 octet */ 139 const u8 *mac_addr; /* ETH_ALEN (6) octets */ 140 const u8 *key_prov_auto; /* 1 octet (Bool) */ 141 const u8 *dot1x_enabled; /* 1 octet (Bool) */ 142 const u8 *selected_registrar; /* 1 octet (Bool) */ 143 const u8 *request_type; /* 1 octet */ 144 const u8 *response_type; /* 1 octet */ 145 const u8 *ap_setup_locked; /* 1 octet */ 146 147 /* variable length fields */ 148 const u8 *manufacturer; 149 size_t manufacturer_len; 150 const u8 *model_name; 151 size_t model_name_len; 152 const u8 *model_number; 153 size_t model_number_len; 154 const u8 *serial_number; 155 size_t serial_number_len; 156 const u8 *dev_name; 157 size_t dev_name_len; 158 const u8 *public_key; 159 size_t public_key_len; 160 const u8 *encr_settings; 161 size_t encr_settings_len; 162 const u8 *ssid; /* <= 32 octets */ 163 size_t ssid_len; 164 const u8 *network_key; /* <= 64 octets */ 165 size_t network_key_len; 166 const u8 *eap_type; /* <= 8 octets */ 167 size_t eap_type_len; 168 const u8 *eap_identity; /* <= 64 octets */ 169 size_t eap_identity_len; 170 171 /* attributes that can occur multiple times */ 172 #define MAX_CRED_COUNT 10 173 const u8 *cred[MAX_CRED_COUNT]; 174 size_t cred_len[MAX_CRED_COUNT]; 175 size_t num_cred; 176 }; 177 178 /* wps_common.c */ 179 void wps_kdf(const u8 *key, const u8 *label_prefix, size_t label_prefix_len, 180 const char *label, u8 *res, size_t res_len); 181 int wps_derive_keys(struct wps_data *wps); 182 void wps_derive_psk(struct wps_data *wps, const u8 *dev_passwd, 183 size_t dev_passwd_len); 184 struct wpabuf * wps_decrypt_encr_settings(struct wps_data *wps, const u8 *encr, 185 size_t encr_len); 186 void wps_fail_event(struct wps_context *wps, enum wps_msg_type msg); 187 void wps_success_event(struct wps_context *wps); 188 void wps_pwd_auth_fail_event(struct wps_context *wps, int enrollee, int part); 189 void wps_pbc_overlap_event(struct wps_context *wps); 190 void wps_pbc_timeout_event(struct wps_context *wps); 191 192 /* wps_attr_parse.c */ 193 int wps_parse_msg(const struct wpabuf *msg, struct wps_parse_attr *attr); 194 195 /* wps_attr_build.c */ 196 int wps_build_public_key(struct wps_data *wps, struct wpabuf *msg); 197 int wps_build_req_type(struct wpabuf *msg, enum wps_request_type type); 198 int wps_build_config_methods(struct wpabuf *msg, u16 methods); 199 int wps_build_uuid_e(struct wpabuf *msg, const u8 *uuid); 200 int wps_build_dev_password_id(struct wpabuf *msg, u16 id); 201 int wps_build_config_error(struct wpabuf *msg, u16 err); 202 int wps_build_authenticator(struct wps_data *wps, struct wpabuf *msg); 203 int wps_build_key_wrap_auth(struct wps_data *wps, struct wpabuf *msg); 204 int wps_build_encr_settings(struct wps_data *wps, struct wpabuf *msg, 205 struct wpabuf *plain); 206 int wps_build_version(struct wpabuf *msg); 207 int wps_build_msg_type(struct wpabuf *msg, enum wps_msg_type msg_type); 208 int wps_build_enrollee_nonce(struct wps_data *wps, struct wpabuf *msg); 209 int wps_build_registrar_nonce(struct wps_data *wps, struct wpabuf *msg); 210 int wps_build_auth_type_flags(struct wps_data *wps, struct wpabuf *msg); 211 int wps_build_encr_type_flags(struct wps_data *wps, struct wpabuf *msg); 212 int wps_build_conn_type_flags(struct wps_data *wps, struct wpabuf *msg); 213 int wps_build_assoc_state(struct wps_data *wps, struct wpabuf *msg); 214 215 /* wps_attr_process.c */ 216 int wps_process_authenticator(struct wps_data *wps, const u8 *authenticator, 217 const struct wpabuf *msg); 218 int wps_process_key_wrap_auth(struct wps_data *wps, struct wpabuf *msg, 219 const u8 *key_wrap_auth); 220 int wps_process_cred(struct wps_parse_attr *attr, 221 struct wps_credential *cred); 222 int wps_process_ap_settings(struct wps_parse_attr *attr, 223 struct wps_credential *cred); 224 225 /* wps_enrollee.c */ 226 struct wpabuf * wps_enrollee_get_msg(struct wps_data *wps, 227 enum wsc_op_code *op_code); 228 enum wps_process_res wps_enrollee_process_msg(struct wps_data *wps, 229 enum wsc_op_code op_code, 230 const struct wpabuf *msg); 231 232 /* wps_registrar.c */ 233 struct wpabuf * wps_registrar_get_msg(struct wps_data *wps, 234 enum wsc_op_code *op_code); 235 enum wps_process_res wps_registrar_process_msg(struct wps_data *wps, 236 enum wsc_op_code op_code, 237 const struct wpabuf *msg); 238 239 240 static inline int wps_version_supported(const u8 *version) 241 { 242 /* Require major version match, but allow minor version differences */ 243 return version && (*version & 0xf0) == (WPS_VERSION & 0xf0); 244 } 245 246 #endif /* WPS_I_H */ 247
