workbench/network/WirelessManager/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_assoc_resp_ie(void);
 202 struct wpabuf * wps_build_probe_req_ie(int pbc, struct wps_device_data *dev,
 203                                        const u8 *uuid,
 204                                        enum wps_request_type req_type);
 205
 206
 207 /**
 208  * struct wps_registrar_config - WPS Registrar configuration
 209  */
 210 struct wps_registrar_config {
 211         /**
 212          * new_psk_cb - Callback for new PSK
 213          * @ctx: Higher layer context data (cb_ctx)
 214          * @mac_addr: MAC address of the Enrollee
 215          * @psk: The new PSK
 216          * @psk_len: The length of psk in octets
 217          * Returns: 0 on success, -1 on failure
 218          *
 219          * This callback is called when a new per-device PSK is provisioned.
 220          */
 221         int (*new_psk_cb)(void *ctx, const u8 *mac_addr, const u8 *psk,
 222                           size_t psk_len);
 223
 224         /**
 225          * set_ie_cb - Callback for WPS IE changes
 226          * @ctx: Higher layer context data (cb_ctx)
 227          * @beacon_ie: WPS IE for Beacon
 228          * @probe_resp_ie: WPS IE for Probe Response
 229          * Returns: 0 on success, -1 on failure
 230          *
 231          * This callback is called whenever the WPS IE in Beacon or Probe
 232          * Response frames needs to be changed (AP only). Callee is responsible
 233          * for freeing the buffers.
 234          */
 235         int (*set_ie_cb)(void *ctx, struct wpabuf *beacon_ie,
 236                          struct wpabuf *probe_resp_ie);
 237
 238         /**
 239          * pin_needed_cb - Callback for requesting a PIN
 240          * @ctx: Higher layer context data (cb_ctx)
 241          * @uuid_e: UUID-E of the unknown Enrollee
 242          * @dev: Device Data from the unknown Enrollee
 243          *
 244          * This callback is called whenever an unknown Enrollee requests to use
 245          * PIN method and a matching PIN (Device Password) is not found in
 246          * Registrar data.
 247          */
 248         void (*pin_needed_cb)(void *ctx, const u8 *uuid_e,
 249                               const struct wps_device_data *dev);
 250
 251         /**
 252          * reg_success_cb - Callback for reporting successful registration
 253          * @ctx: Higher layer context data (cb_ctx)
 254          * @mac_addr: MAC address of the Enrollee
 255          * @uuid_e: UUID-E of the Enrollee
 256          *
 257          * This callback is called whenever an Enrollee completes registration
 258          * successfully.
 259          */
 260         void (*reg_success_cb)(void *ctx, const u8 *mac_addr,
 261                                const u8 *uuid_e);
 262
 263         /**
 264          * set_sel_reg_cb - Callback for reporting selected registrar changes
 265          * @ctx: Higher layer context data (cb_ctx)
 266          * @sel_reg: Whether the Registrar is selected
 267          * @dev_passwd_id: Device Password ID to indicate with method or
 268          *      specific password the Registrar intends to use
 269          * @sel_reg_config_methods: Bit field of active config methods
 270          *
 271          * This callback is called whenever the Selected Registrar state
 272          * changes (e.g., a new PIN becomes available or PBC is invoked). This
 273          * callback is only used by External Registrar implementation;
 274          * set_ie_cb() is used by AP implementation in similar caes, but it
 275          * provides the full WPS IE data instead of just the minimal Registrar
 276          * state information.
 277          */
 278         void (*set_sel_reg_cb)(void *ctx, int sel_reg, u16 dev_passwd_id,
 279                                u16 sel_reg_config_methods);
 280
 281         /**
 282          * enrollee_seen_cb - Callback for reporting Enrollee based on ProbeReq
 283          * @ctx: Higher layer context data (cb_ctx)
 284          * @addr: MAC address of the Enrollee
 285          * @uuid_e: UUID of the Enrollee
 286          * @pri_dev_type: Primary device type
 287          * @config_methods: Config Methods
 288          * @dev_password_id: Device Password ID
 289          * @request_type: Request Type
 290          * @dev_name: Device Name (if available)
 291          */
 292         void (*enrollee_seen_cb)(void *ctx, const u8 *addr, const u8 *uuid_e,
 293                                  const u8 *pri_dev_type, u16 config_methods,
 294                                  u16 dev_password_id, u8 request_type,
 295                                  const char *dev_name);
 296
 297         /**
 298          * cb_ctx: Higher layer context data for Registrar callbacks
 299          */
 300         void *cb_ctx;
 301
 302         /**
 303          * skip_cred_build: Do not build credential
 304          *
 305          * This option can be used to disable internal code that builds
 306          * Credential attribute into M8 based on the current network
 307          * configuration and Enrollee capabilities. The extra_cred data will
 308          * then be used as the Credential(s).
 309          */
 310         int skip_cred_build;
 311
 312         /**
 313          * extra_cred: Additional Credential attribute(s)
 314          *
 315          * This optional data (set to %NULL to disable) can be used to add
 316          * Credential attribute(s) for other networks into M8. If
 317          * skip_cred_build is set, this will also override the automatically
 318          * generated Credential attribute.
 319          */
 320         const u8 *extra_cred;
 321
 322         /**
 323          * extra_cred_len: Length of extra_cred in octets
 324          */
 325         size_t extra_cred_len;
 326
 327         /**
 328          * disable_auto_conf - Disable auto-configuration on first registration
 329          *
 330          * By default, the AP that is started in not configured state will
 331          * generate a random PSK and move to configured state when the first
 332          * registration protocol run is completed successfully. This option can
 333          * be used to disable this functionality and leave it up to an external
 334          * program to take care of configuration. This requires the extra_cred
 335          * to be set with a suitable Credential and skip_cred_build being used.
 336          */
 337         int disable_auto_conf;
 338
 339         /**
 340          * static_wep_only - Whether the BSS supports only static WEP
 341          */
 342         int static_wep_only;
 343 };
 344
 345
 346 /**
 347  * enum wps_event - WPS event types
 348  */
 349 enum wps_event {
 350         /**
 351          * WPS_EV_M2D - M2D received (Registrar did not know us)
 352          */
 353         WPS_EV_M2D,
 354
 355         /**
 356          * WPS_EV_FAIL - Registration failed
 357          */
 358         WPS_EV_FAIL,
 359
 360         /**
 361          * WPS_EV_SUCCESS - Registration succeeded
 362          */
 363         WPS_EV_SUCCESS,
 364
 365         /**
 366          * WPS_EV_PWD_AUTH_FAIL - Password authentication failed
 367          */
 368         WPS_EV_PWD_AUTH_FAIL,
 369
 370         /**
 371          * WPS_EV_PBC_OVERLAP - PBC session overlap detected
 372          */
 373         WPS_EV_PBC_OVERLAP,
 374
 375         /**
 376          * WPS_EV_PBC_TIMEOUT - PBC walktime expired before protocol run start
 377          */
 378         WPS_EV_PBC_TIMEOUT,
 379
 380         /**
 381          * WPS_EV_ER_AP_ADD - ER: AP added
 382          */
 383         WPS_EV_ER_AP_ADD,
 384
 385         /**
 386          * WPS_EV_ER_AP_REMOVE - ER: AP removed
 387          */
 388         WPS_EV_ER_AP_REMOVE,
 389
 390         /**
 391          * WPS_EV_ER_ENROLLEE_ADD - ER: Enrollee added
 392          */
 393         WPS_EV_ER_ENROLLEE_ADD,
 394
 395         /**
 396          * WPS_EV_ER_ENROLLEE_REMOVE - ER: Enrollee removed
 397          */
 398         WPS_EV_ER_ENROLLEE_REMOVE
 399 };
 400
 401 /**
 402  * union wps_event_data - WPS event data
 403  */
 404 union wps_event_data {
 405         /**
 406          * struct wps_event_m2d - M2D event data
 407          */
 408         struct wps_event_m2d {
 409                 u16 config_methods;
 410                 const u8 *manufacturer;
 411                 size_t manufacturer_len;
 412                 const u8 *model_name;
 413                 size_t model_name_len;
 414                 const u8 *model_number;
 415                 size_t model_number_len;
 416                 const u8 *serial_number;
 417                 size_t serial_number_len;
 418                 const u8 *dev_name;
 419                 size_t dev_name_len;
 420                 const u8 *primary_dev_type; /* 8 octets */
 421                 u16 config_error;
 422                 u16 dev_password_id;
 423         } m2d;
 424
 425         /**
 426          * struct wps_event_fail - Registration failure information
 427          * @msg: enum wps_msg_type
 428          */
 429         struct wps_event_fail {
 430                 int msg;
 431         } fail;
 432
 433         struct wps_event_pwd_auth_fail {
 434                 int enrollee;
 435                 int part;
 436         } pwd_auth_fail;
 437
 438         struct wps_event_er_ap {
 439                 const u8 *uuid;
 440                 const u8 *mac_addr;
 441                 const char *friendly_name;
 442                 const char *manufacturer;
 443                 const char *manufacturer_url;
 444                 const char *model_description;
 445                 const char *model_name;
 446                 const char *model_number;
 447                 const char *model_url;
 448                 const char *serial_number;
 449                 const char *upc;
 450                 const u8 *pri_dev_type;
 451                 u8 wps_state;
 452         } ap;
 453
 454         struct wps_event_er_enrollee {
 455                 const u8 *uuid;
 456                 const u8 *mac_addr;
 457                 int m1_received;
 458                 u16 config_methods;
 459                 u16 dev_passwd_id;
 460                 const u8 *pri_dev_type;
 461                 const char *dev_name;
 462                 const char *manufacturer;
 463                 const char *model_name;
 464                 const char *model_number;
 465                 const char *serial_number;
 466         } enrollee;
 467 };
 468
 469 /**
 470  * struct upnp_pending_message - Pending PutWLANResponse messages
 471  * @next: Pointer to next pending message or %NULL
 472  * @addr: NewWLANEventMAC
 473  * @msg: NewMessage
 474  * @type: Message Type
 475  */
 476 struct upnp_pending_message {
 477         struct upnp_pending_message *next;
 478         u8 addr[ETH_ALEN];
 479         struct wpabuf *msg;
 480         enum wps_msg_type type;
 481 };
 482
 483 /**
 484  * struct wps_context - Long term WPS context data
 485  *
 486  * This data is stored at the higher layer Authenticator or Supplicant data
 487  * structures and it is maintained over multiple registration protocol runs.
 488  */
 489 struct wps_context {
 490         /**
 491          * ap - Whether the local end is an access point
 492          */
 493         int ap;
 494
 495         /**
 496          * registrar - Pointer to WPS registrar data from wps_registrar_init()
 497          */
 498         struct wps_registrar *registrar;
 499
 500         /**
 501          * wps_state - Current WPS state
 502          */
 503         enum wps_state wps_state;
 504
 505         /**
 506          * ap_setup_locked - Whether AP setup is locked (only used at AP)
 507          */
 508         int ap_setup_locked;
 509
 510         /**
 511          * uuid - Own UUID
 512          */
 513         u8 uuid[16];
 514
 515         /**
 516          * ssid - SSID
 517          *
 518          * This SSID is used by the Registrar to fill in information for
 519          * Credentials. In addition, AP uses it when acting as an Enrollee to
 520          * notify Registrar of the current configuration.
 521          */
 522         u8 ssid[32];
 523
 524         /**
 525          * ssid_len - Length of ssid in octets
 526          */
 527         size_t ssid_len;
 528
 529         /**
 530          * dev - Own WPS device data
 531          */
 532         struct wps_device_data dev;
 533
 534         /**
 535          * oob_conf - OOB Config data
 536          */
 537         struct oob_conf_data oob_conf;
 538
 539         /**
 540          * oob_dev_pw_id - OOB Device password id
 541          */
 542         u16 oob_dev_pw_id;
 543
 544         /**
 545          * dh_ctx - Context data for Diffie-Hellman operation
 546          */
 547         void *dh_ctx;
 548
 549         /**
 550          * dh_privkey - Diffie-Hellman private key
 551          */
 552         struct wpabuf *dh_privkey;
 553
 554         /**
 555          * dh_pubkey_oob - Diffie-Hellman public key
 556          */
 557         struct wpabuf *dh_pubkey;
 558
 559         /**
 560          * config_methods - Enabled configuration methods
 561          *
 562          * Bit field of WPS_CONFIG_*
 563          */
 564         u16 config_methods;
 565
 566         /**
 567          * encr_types - Enabled encryption types (bit field of WPS_ENCR_*)
 568          */
 569         u16 encr_types;
 570
 571         /**
 572          * auth_types - Authentication types (bit field of WPS_AUTH_*)
 573          */
 574         u16 auth_types;
 575
 576         /**
 577          * network_key - The current Network Key (PSK) or %NULL to generate new
 578          *
 579          * If %NULL, Registrar will generate per-device PSK. In addition, AP
 580          * uses this when acting as an Enrollee to notify Registrar of the
 581          * current configuration.
 582          *
 583          * When using WPA/WPA2-Person, this key can be either the ASCII
 584          * passphrase (8..63 characters) or the 32-octet PSK (64 hex
 585          * characters). When this is set to the ASCII passphrase, the PSK can
 586          * be provided in the psk buffer and used per-Enrollee to control which
 587          * key type is included in the Credential (e.g., to reduce calculation
 588          * need on low-powered devices by provisioning PSK while still allowing
 589          * other devices to get the passphrase).
 590          */
 591         u8 *network_key;
 592
 593         /**
 594          * network_key_len - Length of network_key in octets
 595          */
 596         size_t network_key_len;
 597
 598         /**
 599          * psk - The current network PSK
 600          *
 601          * This optional value can be used to provide the current PSK if
 602          * network_key is set to the ASCII passphrase.
 603          */
 604         u8 psk[32];
 605
 606         /**
 607          * psk_set - Whether psk value is set
 608          */
 609         int psk_set;
 610
 611         /**
 612          * ap_settings - AP Settings override for M7 (only used at AP)
 613          *
 614          * If %NULL, AP Settings attributes will be generated based on the
 615          * current network configuration.
 616          */
 617         u8 *ap_settings;
 618
 619         /**
 620          * ap_settings_len - Length of ap_settings in octets
 621          */
 622         size_t ap_settings_len;
 623
 624         /**
 625          * friendly_name - Friendly Name (required for UPnP)
 626          */
 627         char *friendly_name;
 628
 629         /**
 630          * manufacturer_url - Manufacturer URL (optional for UPnP)
 631          */
 632         char *manufacturer_url;
 633
 634         /**
 635          * model_description - Model Description (recommended for UPnP)
 636          */
 637         char *model_description;
 638
 639         /**
 640          * model_url - Model URL (optional for UPnP)
 641          */
 642         char *model_url;
 643
 644         /**
 645          * upc - Universal Product Code (optional for UPnP)
 646          */
 647         char *upc;
 648
 649         /**
 650          * cred_cb - Callback to notify that new Credentials were received
 651          * @ctx: Higher layer context data (cb_ctx)
 652          * @cred: The received Credential
 653          * Return: 0 on success, -1 on failure
 654          */
 655         int (*cred_cb)(void *ctx, const struct wps_credential *cred);
 656
 657         /**
 658          * event_cb - Event callback (state information about progress)
 659          * @ctx: Higher layer context data (cb_ctx)
 660          * @event: Event type
 661          * @data: Event data
 662          */
 663         void (*event_cb)(void *ctx, enum wps_event event,
 664                          union wps_event_data *data);
 665
 666         /**
 667          * cb_ctx: Higher layer context data for callbacks
 668          */
 669         void *cb_ctx;
 670
 671         struct upnp_wps_device_sm *wps_upnp;
 672
 673         /* Pending messages from UPnP PutWLANResponse */
 674         struct upnp_pending_message *upnp_msgs;
 675 };
 676
 677 struct oob_device_data {
 678         char *device_name;
 679         char *device_path;
 680         void * (*init_func)(struct wps_context *, struct oob_device_data *,
 681                             int);
 682         struct wpabuf * (*read_func)(void *);
 683         int (*write_func)(void *, struct wpabuf *);
 684         void (*deinit_func)(void *);
 685 };
 686
 687 struct oob_nfc_device_data {
 688         int (*init_func)(char *);
 689         void * (*read_func)(size_t *);
 690         int (*write_func)(void *, size_t);
 691         void (*deinit_func)(void);
 692 };
 693
 694 struct wps_registrar *
 695 wps_registrar_init(struct wps_context *wps,
 696                    const struct wps_registrar_config *cfg);
 697 void wps_registrar_deinit(struct wps_registrar *reg);
 698 int wps_registrar_add_pin(struct wps_registrar *reg, const u8 *uuid,
 699                           const u8 *pin, size_t pin_len, int timeout);
 700 int wps_registrar_invalidate_pin(struct wps_registrar *reg, const u8 *uuid);
 701 int wps_registrar_unlock_pin(struct wps_registrar *reg, const u8 *uuid);
 702 int wps_registrar_button_pushed(struct wps_registrar *reg);
 703 void wps_registrar_probe_req_rx(struct wps_registrar *reg, const u8 *addr,
 704                                 const struct wpabuf *wps_data);
 705 int wps_registrar_update_ie(struct wps_registrar *reg);
 706 int wps_registrar_get_info(struct wps_registrar *reg, const u8 *addr,
 707                            char *buf, size_t buflen);
 708
 709 unsigned int wps_pin_checksum(unsigned int pin);
 710 unsigned int wps_pin_valid(unsigned int pin);
 711 unsigned int wps_generate_pin(void);
 712 void wps_free_pending_msgs(struct upnp_pending_message *msgs);
 713
 714 struct oob_device_data * wps_get_oob_device(char *device_type);
 715 struct oob_nfc_device_data * wps_get_oob_nfc_device(char *device_name);
 716 int wps_get_oob_method(char *method);
 717 int wps_process_oob(struct wps_context *wps, struct oob_device_data *oob_dev,
 718                     int registrar);
 719 int wps_attr_text(struct wpabuf *data, char *buf, char *end);
 720
 721 struct wps_er * wps_er_init(struct wps_context *wps, const char *ifname);
 722 void wps_er_refresh(struct wps_er *er);
 723 void wps_er_deinit(struct wps_er *er, void (*cb)(void *ctx), void *ctx);
 724 void wps_er_set_sel_reg(struct wps_er *er, int sel_reg, u16 dev_passwd_id,
 725                         u16 sel_reg_config_methods);
 726 int wps_er_pbc(struct wps_er *er, const u8 *uuid);
 727 int wps_er_learn(struct wps_er *er, const u8 *uuid, const u8 *pin,
 728                  size_t pin_len);
 729
 730 int wps_dev_type_str2bin(const char *str, u8 dev_type[WPS_DEV_TYPE_LEN]);
 731 char * wps_dev_type_bin2str(const u8 dev_type[WPS_DEV_TYPE_LEN], char *buf,
 732                             size_t buf_len);
 733 void uuid_gen_mac_addr(const u8 *mac_addr, u8 *uuid);
 734 u16 wps_config_methods_str2bin(const char *str);
 735
 736 #endif /* WPS_H */