src/wps/wps.h

   1 /*
   2  * Wi-Fi Protected Setup
   3  * Copyright (c) 2007-2009, Jouni Malinen <j@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_H
  16 #define WPS_H
  17
  18 #include "wps_defs.h"
  19
  20 /**
  21  * enum wsc_op_code - EAP-WSC OP-Code values
  22  */
  23 enum wsc_op_code {
  24         WSC_UPnP = 0 /* No OP Code in UPnP transport */,
  25         WSC_Start = 0x01,
  26         WSC_ACK = 0x02,
  27         WSC_NACK = 0x03,
  28         WSC_MSG = 0x04,
  29         WSC_Done = 0x05,
  30         WSC_FRAG_ACK = 0x06
  31 };
  32
  33 struct wps_registrar;
  34 struct upnp_wps_device_sm;
  35 struct wps_er;
  36
  37 /**
  38  * struct wps_credential - WPS Credential
  39  * @ssid: SSID
  40  * @ssid_len: Length of SSID
  41  * @auth_type: Authentication Type (WPS_AUTH_OPEN, .. flags)
  42  * @encr_type: Encryption Type (WPS_ENCR_NONE, .. flags)
  43  * @key_idx: Key index
  44  * @key: Key
  45  * @key_len: Key length in octets
  46  * @mac_addr: MAC address of the Credential receiver
  47  * @cred_attr: Unparsed Credential attribute data (used only in cred_cb());
  48  *      this may be %NULL, if not used
  49  * @cred_attr_len: Length of cred_attr in octets
  50  */
  51 struct wps_credential {
  52         u8 ssid[32];
  53         size_t ssid_len;
  54         u16 auth_type;
  55         u16 encr_type;
  56         u8 key_idx;
  57         u8 key[64];
  58         size_t key_len;
  59         u8 mac_addr[ETH_ALEN];
  60         const u8 *cred_attr;
  61         size_t cred_attr_len;
  62 };
  63
  64 #define WPS_DEV_TYPE_LEN 8
  65 #define WPS_DEV_TYPE_BUFSIZE 21
  66
  67 /**
  68  * struct wps_device_data - WPS Device Data
  69  * @mac_addr: Device MAC address
  70  * @device_name: Device Name (0..32 octets encoded in UTF-8)
  71  * @manufacturer: Manufacturer (0..64 octets encoded in UTF-8)
  72  * @model_name: Model Name (0..32 octets encoded in UTF-8)
  73  * @model_number: Model Number (0..32 octets encoded in UTF-8)
  74  * @serial_number: Serial Number (0..32 octets encoded in UTF-8)
  75  * @pri_dev_type: Primary Device Type
  76  * @os_version: OS Version
  77  * @rf_bands: RF bands (WPS_RF_24GHZ, WPS_RF_50GHZ flags)
  78  */
  79 struct wps_device_data {
  80         u8 mac_addr[ETH_ALEN];
  81         char *device_name;
  82         char *manufacturer;
  83         char *model_name;
  84         char *model_number;
  85         char *serial_number;
  86         u8 pri_dev_type[WPS_DEV_TYPE_LEN];
  87         u32 os_version;
  88         u8 rf_bands;
  89 };
  90
  91 struct oob_conf_data {
  92         enum {
  93                 OOB_METHOD_UNKNOWN = 0,
  94                 OOB_METHOD_DEV_PWD_E,
  95                 OOB_METHOD_DEV_PWD_R,
  96                 OOB_METHOD_CRED,
  97         } oob_method;
  98         struct wpabuf *dev_password;
  99         struct wpabuf *pubkey_hash;
 100 };
 101
 102 /**
 103  * struct wps_config - WPS configuration for a single registration protocol run
 104  */
 105 struct wps_config {
 106         /**
 107          * wps - Pointer to long term WPS context
 108          */
 109         struct wps_context *wps;
 110
 111         /**
 112          * registrar - Whether this end is a Registrar
 113          */
 114         int registrar;
 115
 116         /**
 117          * pin - Enrollee Device Password (%NULL for Registrar or PBC)
 118          */
 119         const u8 *pin;
 120
 121         /**
 122          * pin_len - Length on pin in octets
 123          */
 124         size_t pin_len;
 125
 126         /**
 127          * pbc - Whether this is protocol run uses PBC
 128          */
 129         int pbc;
 130
 131         /**
 132          * assoc_wps_ie: (Re)AssocReq WPS IE (in AP; %NULL if not AP)
 133          */
 134         const struct wpabuf *assoc_wps_ie;
 135
 136         /**
 137          * new_ap_settings - New AP settings (%NULL if not used)
 138          *
 139          * This parameter provides new AP settings when using a wireless
 140          * stations as a Registrar to configure the AP. %NULL means that AP
 141          * will not be reconfigured, i.e., the station will only learn the
 142          * current AP settings by using AP PIN.
 143          */
 144         const struct wps_credential *new_ap_settings;
 145
 146         /**
 147          * peer_addr: MAC address of the peer in AP; %NULL if not AP
 148          */
 149         const u8 *peer_addr;
 150
 151         /**
 152          * use_psk_key - Use PSK format key in Credential
 153          *
 154          * Force PSK format to be used instead of ASCII passphrase when
 155          * building Credential for an Enrollee. The PSK value is set in
 156          * struct wpa_context::psk.
 157          */
 158         int use_psk_key;
 159 };
 160
 161 struct wps_data * wps_init(const struct wps_config *cfg);
 162
 163 void wps_deinit(struct wps_data *data);
 164
 165 /**
 166  * enum wps_process_res - WPS message processing result
 167  */
 168 enum wps_process_res {
 169         /**
 170          * WPS_DONE - Processing done
 171          */
 172         WPS_DONE,
 173
 174         /**
 175          * WPS_CONTINUE - Processing continues
 176          */
 177         WPS_CONTINUE,
 178
 179         /**
 180          * WPS_FAILURE - Processing failed
 181          */
 182         WPS_FAILURE,
 183
 184         /**
 185          * WPS_PENDING - Processing continues, but waiting for an external
 186          *      event (e.g., UPnP message from an external Registrar)
 187          */
 188         WPS_PENDING
 189 };
 190 enum wps_process_res wps_process_msg(struct wps_data *wps,
 191                                      enum wsc_op_code op_code,
 192                                      const struct wpabuf *msg);
 193
 194 struct wpabuf * wps_get_msg(struct wps_data *wps, enum wsc_op_code *op_code);
 195
 196 int wps_is_selected_pbc_registrar(const struct wpabuf *msg);
 197 int wps_is_selected_pin_registrar(const struct wpabuf *msg);
 198 const u8 * wps_get_uuid_e(const struct wpabuf *msg);
 199
 200 struct wpabuf * wps_build_assoc_req_ie(enum wps_request_type req_type);
 201 struct wpabuf * wps_build_probe_req_ie(int pbc, struct wps_device_data *dev,
 202                                        const u8 *uuid,
 203                                        enum wps_request_type req_type);
 204
 205
 206 /**
 207  * struct wps_registrar_config - WPS Registrar configuration
 208  */
 209 struct wps_registrar_config {
 210         /**
 211          * new_psk_cb - Callback for new PSK
 212          * @ctx: Higher layer context data (cb_ctx)
 213          * @mac_addr: MAC address of the Enrollee
 214          * @psk: The new PSK
 215          * @psk_len: The length of psk in octets
 216          * Returns: 0 on success, -1 on failure
 217          *
 218          * This callback is called when a new per-device PSK is provisioned.
 219          */
 220         int (*new_psk_cb)(void *ctx, const u8 *mac_addr, const u8 *psk,
 221                           size_t psk_len);
 222
 223         /**
 224          * set_ie_cb - Callback for WPS IE changes
 225          * @ctx: Higher layer context data (cb_ctx)
 226          * @beacon_ie: WPS IE for Beacon
 227          * @probe_resp_ie: WPS IE for Probe Response
 228          * Returns: 0 on success, -1 on failure
 229          *
 230          * This callback is called whenever the WPS IE in Beacon or Probe
 231          * Response frames needs to be changed (AP only). Callee is responsible
 232          * for freeing the buffers.
 233          */
 234         int (*set_ie_cb)(void *ctx, struct wpabuf *beacon_ie,
 235                          struct wpabuf *probe_resp_ie);
 236
 237         /**
 238          * pin_needed_cb - Callback for requesting a PIN
 239          * @ctx: Higher layer context data (cb_ctx)
 240          * @uuid_e: UUID-E of the unknown Enrollee
 241          * @dev: Device Data from the unknown Enrollee
 242          *
 243          * This callback is called whenever an unknown Enrollee requests to use
 244          * PIN method and a matching PIN (Device Password) is not found in
 245          * Registrar data.
 246          */
 247         void (*pin_needed_cb)(void *ctx, const u8 *uuid_e,
 248                               const struct wps_device_data *dev);
 249
 250         /**
 251          * reg_success_cb - Callback for reporting successful registration
 252          * @ctx: Higher layer context data (cb_ctx)
 253          * @mac_addr: MAC address of the Enrollee
 254          * @uuid_e: UUID-E of the Enrollee
 255          *
 256          * This callback is called whenever an Enrollee completes registration
 257          * successfully.
 258          */
 259         void (*reg_success_cb)(void *ctx, const u8 *mac_addr,
 260                                const u8 *uuid_e);
 261
 262         /**
 263          * set_sel_reg_cb - Callback for reporting selected registrar changes
 264          * @ctx: Higher layer context data (cb_ctx)
 265          * @sel_reg: Whether the Registrar is selected
 266          * @dev_passwd_id: Device Password ID to indicate with method or
 267          *      specific password the Registrar intends to use
 268          * @sel_reg_config_methods: Bit field of active config methods
 269          *
 270          * This callback is called whenever the Selected Registrar state
 271          * changes (e.g., a new PIN becomes available or PBC is invoked). This
 272          * callback is only used by External Registrar implementation;
 273          * set_ie_cb() is used by AP implementation in similar caes, but it
 274          * provides the full WPS IE data instead of just the minimal Registrar
 275          * state information.
 276          */
 277         void (*set_sel_reg_cb)(void *ctx, int sel_reg, u16 dev_passwd_id,
 278                                u16 sel_reg_config_methods);
 279
 280         /**
 281          * enrollee_seen_cb - Callback for reporting Enrollee based on ProbeReq
 282          * @ctx: Higher layer context data (cb_ctx)
 283          * @addr: MAC address of the Enrollee
 284          * @uuid_e: UUID of the Enrollee
 285          * @pri_dev_type: Primary device type
 286          * @config_methods: Config Methods
 287          * @dev_password_id: Device Password ID
 288          * @request_type: Request Type
 289          * @dev_name: Device Name (if available)
 290          */
 291         void (*enrollee_seen_cb)(void *ctx, const u8 *addr, const u8 *uuid_e,
 292                                  const u8 *pri_dev_type, u16 config_methods,
 293                                  u16 dev_password_id, u8 request_type,
 294                                  const char *dev_name);
 295
 296         /**
 297          * cb_ctx: Higher layer context data for Registrar callbacks
 298          */
 299         void *cb_ctx;
 300
 301         /**
 302          * skip_cred_build: Do not build credential
 303          *
 304          * This option can be used to disable internal code that builds
 305          * Credential attribute into M8 based on the current network
 306          * configuration and Enrollee capabilities. The extra_cred data will
 307          * then be used as the Credential(s).
 308          */
 309         int skip_cred_build;
 310
 311         /**
 312          * extra_cred: Additional Credential attribute(s)
 313          *
 314          * This optional data (set to %NULL to disable) can be used to add
 315          * Credential attribute(s) for other networks into M8. If
 316          * skip_cred_build is set, this will also override the automatically
 317          * generated Credential attribute.
 318          */
 319         const u8 *extra_cred;
 320
 321         /**
 322          * extra_cred_len: Length of extra_cred in octets
 323          */
 324         size_t extra_cred_len;
 325
 326         /**
 327          * disable_auto_conf - Disable auto-configuration on first registration
 328          *
 329          * By default, the AP that is started in not configured state will
 330          * generate a random PSK and move to configured state when the first
 331          * registration protocol run is completed successfully. This option can
 332          * be used to disable this functionality and leave it up to an external
 333          * program to take care of configuration. This requires the extra_cred
 334          * to be set with a suitable Credential and skip_cred_build being used.
 335          */
 336         int disable_auto_conf;
 337
 338         /**
 339          * static_wep_only - Whether the BSS supports only static WEP
 340          */
 341         int static_wep_only;
 342 };
 343
 344
 345 /**
 346  * enum wps_event - WPS event types
 347  */
 348 enum wps_event {
 349         /**
 350          * WPS_EV_M2D - M2D received (Registrar did not know us)
 351          */
 352         WPS_EV_M2D,
 353
 354         /**
 355          * WPS_EV_FAIL - Registration failed
 356          */
 357         WPS_EV_FAIL,
 358
 359         /**
 360          * WPS_EV_SUCCESS - Registration succeeded
 361          */
 362         WPS_EV_SUCCESS,
 363
 364         /**
 365          * WPS_EV_PWD_AUTH_FAIL - Password authentication failed
 366          */
 367         WPS_EV_PWD_AUTH_FAIL,
 368
 369         /**
 370          * WPS_EV_PBC_OVERLAP - PBC session overlap detected
 371          */
 372         WPS_EV_PBC_OVERLAP,
 373
 374         /**
 375          * WPS_EV_PBC_TIMEOUT - PBC walktime expired before protocol run start
 376          */
 377         WPS_EV_PBC_TIMEOUT,
 378
 379         /**
 380          * WPS_EV_ER_AP_ADD - ER: AP added
 381          */
 382         WPS_EV_ER_AP_ADD,
 383
 384         /**
 385          * WPS_EV_ER_AP_REMOVE - ER: AP removed
 386          */
 387         WPS_EV_ER_AP_REMOVE,
 388
 389         /**
 390          * WPS_EV_ER_ENROLLEE_ADD - ER: Enrollee added
 391          */
 392         WPS_EV_ER_ENROLLEE_ADD,
 393
 394         /**
 395          * WPS_EV_ER_ENROLLEE_REMOVE - ER: Enrollee removed
 396          */
 397         WPS_EV_ER_ENROLLEE_REMOVE
 398 };
 399
 400 /**
 401  * union wps_event_data - WPS event data
 402  */
 403 union wps_event_data {
 404         /**
 405          * struct wps_event_m2d - M2D event data
 406          */
 407         struct wps_event_m2d {
 408                 u16 config_methods;
 409                 const u8 *manufacturer;
 410                 size_t manufacturer_len;
 411                 const u8 *model_name;
 412                 size_t model_name_len;
 413                 const u8 *model_number;
 414                 size_t model_number_len;
 415                 const u8 *serial_number;
 416                 size_t serial_number_len;
 417                 const u8 *dev_name;
 418                 size_t dev_name_len;
 419                 const u8 *primary_dev_type; /* 8 octets */
 420                 u16 config_error;
 421                 u16 dev_password_id;
 422         } m2d;
 423
 424         /**
 425          * struct wps_event_fail - Registration failure information
 426          * @msg: enum wps_msg_type
 427          */
 428         struct wps_event_fail {
 429                 int msg;
 430         } fail;
 431
 432         struct wps_event_pwd_auth_fail {
 433                 int enrollee;
 434                 int part;
 435         } pwd_auth_fail;
 436
 437         struct wps_event_er_ap {
 438                 const u8 *uuid;
 439                 const u8 *mac_addr;
 440                 const char *friendly_name;
 441                 const char *manufacturer;
 442                 const char *manufacturer_url;
 443                 const char *model_description;
 444                 const char *model_name;
 445                 const char *model_number;
 446                 const char *model_url;
 447                 const char *serial_number;
 448                 const char *upc;
 449                 const u8 *pri_dev_type;
 450                 u8 wps_state;
 451         } ap;
 452
 453         struct wps_event_er_enrollee {
 454                 const u8 *uuid;
 455                 const u8 *mac_addr;
 456                 int m1_received;
 457                 u16 config_methods;
 458                 u16 dev_passwd_id;
 459                 const u8 *pri_dev_type;
 460                 const char *dev_name;
 461                 const char *manufacturer;
 462                 const char *model_name;
 463                 const char *model_number;
 464                 const char *serial_number;
 465         } enrollee;
 466 };
 467
 468 /**
 469  * struct upnp_pending_message - Pending PutWLANResponse messages
 470  * @next: Pointer to next pending message or %NULL
 471  * @addr: NewWLANEventMAC
 472  * @msg: NewMessage
 473  * @type: Message Type
 474  */
 475 struct upnp_pending_message {
 476         struct upnp_pending_message *next;
 477         u8 addr[ETH_ALEN];
 478         struct wpabuf *msg;
 479         enum wps_msg_type type;
 480 };
 481
 482 /**
 483  * struct wps_context - Long term WPS context data
 484  *
 485  * This data is stored at the higher layer Authenticator or Supplicant data
 486  * structures and it is maintained over multiple registration protocol runs.
 487  */
 488 struct wps_context {
 489         /**
 490          * ap - Whether the local end is an access point
 491          */
 492         int ap;
 493
 494         /**
 495          * registrar - Pointer to WPS registrar data from wps_registrar_init()
 496          */
 497         struct wps_registrar *registrar;
 498
 499         /**
 500          * wps_state - Current WPS state
 501          */
 502         enum wps_state wps_state;
 503
 504         /**
 505          * ap_setup_locked - Whether AP setup is locked (only used at AP)
 506          */
 507         int ap_setup_locked;
 508
 509         /**
 510          * uuid - Own UUID
 511          */
 512         u8 uuid[16];
 513
 514         /**
 515          * ssid - SSID
 516          *
 517          * This SSID is used by the Registrar to fill in information for
 518          * Credentials. In addition, AP uses it when acting as an Enrollee to
 519          * notify Registrar of the current configuration.
 520          */
 521         u8 ssid[32];
 522
 523         /**
 524          * ssid_len - Length of ssid in octets
 525          */
 526         size_t ssid_len;
 527
 528         /**
 529          * dev - Own WPS device data
 530          */
 531         struct wps_device_data dev;
 532
 533         /**
 534          * oob_conf - OOB Config data
 535          */
 536         struct oob_conf_data oob_conf;
 537
 538         /**
 539          * oob_dev_pw_id - OOB Device password id
 540          */
 541         u16 oob_dev_pw_id;
 542
 543         /**
 544          * dh_ctx - Context data for Diffie-Hellman operation
 545          */
 546         void *dh_ctx;
 547
 548         /**
 549          * dh_privkey - Diffie-Hellman private key
 550          */
 551         struct wpabuf *dh_privkey;
 552
 553         /**
 554          * dh_pubkey_oob - Diffie-Hellman public key
 555          */
 556         struct wpabuf *dh_pubkey;
 557
 558         /**
 559          * config_methods - Enabled configuration methods
 560          *
 561          * Bit field of WPS_CONFIG_*
 562          */
 563         u16 config_methods;
 564
 565         /**
 566          * encr_types - Enabled encryption types (bit field of WPS_ENCR_*)
 567          */
 568         u16 encr_types;
 569
 570         /**
 571          * auth_types - Authentication types (bit field of WPS_AUTH_*)
 572          */
 573         u16 auth_types;
 574
 575         /**
 576          * network_key - The current Network Key (PSK) or %NULL to generate new
 577          *
 578          * If %NULL, Registrar will generate per-device PSK. In addition, AP
 579          * uses this when acting as an Enrollee to notify Registrar of the
 580          * current configuration.
 581          *
 582          * When using WPA/WPA2-Person, this key can be either the ASCII
 583          * passphrase (8..63 characters) or the 32-octet PSK (64 hex
 584          * characters). When this is set to the ASCII passphrase, the PSK can
 585          * be provided in the psk buffer and used per-Enrollee to control which
 586          * key type is included in the Credential (e.g., to reduce calculation
 587          * need on low-powered devices by provisioning PSK while still allowing
 588          * other devices to get the passphrase).
 589          */
 590         u8 *network_key;
 591
 592         /**
 593          * network_key_len - Length of network_key in octets
 594          */
 595         size_t network_key_len;
 596
 597         /**
 598          * psk - The current network PSK
 599          *
 600          * This optional value can be used to provide the current PSK if
 601          * network_key is set to the ASCII passphrase.
 602          */
 603         u8 psk[32];
 604
 605         /**
 606          * psk_set - Whether psk value is set
 607          */
 608         int psk_set;
 609
 610         /**
 611          * ap_settings - AP Settings override for M7 (only used at AP)
 612          *
 613          * If %NULL, AP Settings attributes will be generated based on the
 614          * current network configuration.
 615          */
 616         u8 *ap_settings;
 617
 618         /**
 619          * ap_settings_len - Length of ap_settings in octets
 620          */
 621         size_t ap_settings_len;
 622
 623         /**
 624          * friendly_name - Friendly Name (required for UPnP)
 625          */
 626         char *friendly_name;
 627
 628         /**
 629          * manufacturer_url - Manufacturer URL (optional for UPnP)
 630          */
 631         char *manufacturer_url;
 632
 633         /**
 634          * model_description - Model Description (recommended for UPnP)
 635          */
 636         char *model_description;
 637
 638         /**
 639          * model_url - Model URL (optional for UPnP)
 640          */
 641         char *model_url;
 642
 643         /**
 644          * upc - Universal Product Code (optional for UPnP)
 645          */
 646         char *upc;
 647
 648         /**
 649          * cred_cb - Callback to notify that new Credentials were received
 650          * @ctx: Higher layer context data (cb_ctx)
 651          * @cred: The received Credential
 652          * Return: 0 on success, -1 on failure
 653          */
 654         int (*cred_cb)(void *ctx, const struct wps_credential *cred);
 655
 656         /**
 657          * event_cb - Event callback (state information about progress)
 658          * @ctx: Higher layer context data (cb_ctx)
 659          * @event: Event type
 660          * @data: Event data
 661          */
 662         void (*event_cb)(void *ctx, enum wps_event event,
 663                          union wps_event_data *data);
 664
 665         /**
 666          * cb_ctx: Higher layer context data for callbacks
 667          */
 668         void *cb_ctx;
 669
 670         struct upnp_wps_device_sm *wps_upnp;
 671
 672         /* Pending messages from UPnP PutWLANResponse */
 673         struct upnp_pending_message *upnp_msgs;
 674 };
 675
 676 struct oob_device_data {
 677         char *device_name;
 678         char *device_path;
 679         void * (*init_func)(struct wps_context *, struct oob_device_data *,
 680                             int);
 681         struct wpabuf * (*read_func)(void *);
 682         int (*write_func)(void *, struct wpabuf *);
 683         void (*deinit_func)(void *);
 684 };
 685
 686 struct oob_nfc_device_data {
 687         int (*init_func)(char *);
 688         void * (*read_func)(size_t *);
 689         int (*write_func)(void *, size_t);
 690         void (*deinit_func)(void);
 691 };
 692
 693 struct wps_registrar *
 694 wps_registrar_init(struct wps_context *wps,
 695                    const struct wps_registrar_config *cfg);
 696 void wps_registrar_deinit(struct wps_registrar *reg);
 697 int wps_registrar_add_pin(struct wps_registrar *reg, const u8 *uuid,
 698                           const u8 *pin, size_t pin_len, int timeout);
 699 int wps_registrar_invalidate_pin(struct wps_registrar *reg, const u8 *uuid);
 700 int wps_registrar_unlock_pin(struct wps_registrar *reg, const u8 *uuid);
 701 int wps_registrar_button_pushed(struct wps_registrar *reg);
 702 void wps_registrar_probe_req_rx(struct wps_registrar *reg, const u8 *addr,
 703                                 const struct wpabuf *wps_data);
 704 int wps_registrar_update_ie(struct wps_registrar *reg);
 705 int wps_registrar_get_info(struct wps_registrar *reg, const u8 *addr,
 706                            char *buf, size_t buflen);
 707
 708 unsigned int wps_pin_checksum(unsigned int pin);
 709 unsigned int wps_pin_valid(unsigned int pin);
 710 unsigned int wps_generate_pin(void);
 711 void wps_free_pending_msgs(struct upnp_pending_message *msgs);
 712
 713 struct oob_device_data * wps_get_oob_device(char *device_type);
 714 struct oob_nfc_device_data * wps_get_oob_nfc_device(char *device_name);
 715 int wps_get_oob_method(char *method);
 716 int wps_process_oob(struct wps_context *wps, struct oob_device_data *oob_dev,
 717                     int registrar);
 718 int wps_attr_text(struct wpabuf *data, char *buf, char *end);
 719
 720 struct wps_er * wps_er_init(struct wps_context *wps, const char *ifname);
 721 void wps_er_refresh(struct wps_er *er);
 722 void wps_er_deinit(struct wps_er *er, void (*cb)(void *ctx), void *ctx);
 723 void wps_er_set_sel_reg(struct wps_er *er, int sel_reg, u16 dev_passwd_id,
 724                         u16 sel_reg_config_methods);
 725 int wps_er_pbc(struct wps_er *er, const u8 *uuid);
 726 int wps_er_learn(struct wps_er *er, const u8 *uuid, const u8 *pin,
 727                  size_t pin_len);
 728
 729 int wps_dev_type_str2bin(const char *str, u8 dev_type[WPS_DEV_TYPE_LEN]);
 730 char * wps_dev_type_bin2str(const u8 dev_type[WPS_DEV_TYPE_LEN], char *buf,
 731                             size_t buf_len);
 732 void uuid_gen_mac_addr(const u8 *mac_addr, u8 *uuid);
 733 u16 wps_config_methods_str2bin(const char *str);
 734
 735 #endif /* WPS_H */