src/wps/wps_i.h

   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 int wps_build_rf_bands_attr(struct wpabuf *msg, u8 rf_bands);
 177 int wps_build_ap_channel(struct wpabuf *msg, u16 ap_channel);
 178
 179 /* wps_attr_process.c */
 180 int wps_process_authenticator(struct wps_data *wps, const u8 *authenticator,
 181                               const struct wpabuf *msg);
 182 int wps_process_key_wrap_auth(struct wps_data *wps, struct wpabuf *msg,
 183                               const u8 *key_wrap_auth);
 184 int wps_process_cred(struct wps_parse_attr *attr,
 185                      struct wps_credential *cred);
 186 int wps_process_ap_settings(struct wps_parse_attr *attr,
 187                             struct wps_credential *cred);
 188
 189 /* wps_enrollee.c */
 190 struct wpabuf * wps_enrollee_get_msg(struct wps_data *wps,
 191                                      enum wsc_op_code *op_code);
 192 enum wps_process_res wps_enrollee_process_msg(struct wps_data *wps,
 193                                               enum wsc_op_code op_code,
 194                                               const struct wpabuf *msg);
 195
 196 /* wps_registrar.c */
 197 struct wpabuf * wps_registrar_get_msg(struct wps_data *wps,
 198                                       enum wsc_op_code *op_code);
 199 enum wps_process_res wps_registrar_process_msg(struct wps_data *wps,
 200                                                enum wsc_op_code op_code,
 201                                                const struct wpabuf *msg);
 202 int wps_build_cred(struct wps_data *wps, struct wpabuf *msg);
 203 int wps_device_store(struct wps_registrar *reg,
 204                      struct wps_device_data *dev, const u8 *uuid);
 205 void wps_registrar_selected_registrar_changed(struct wps_registrar *reg,
 206                                               u16 dev_pw_id);
 207 const u8 * wps_authorized_macs(struct wps_registrar *reg, size_t *count);
 208 int wps_registrar_pbc_overlap(struct wps_registrar *reg,
 209                               const u8 *addr, const u8 *uuid_e);
 210 void wps_registrar_remove_nfc_pw_token(struct wps_registrar *reg,
 211                                        struct wps_nfc_pw_token *token);
 212
 213 #endif /* WPS_I_H */