wpa_ctrl.h revision 58d12adcdf693a076f719cef9b9f2ccf81892045
1/* 2 * wpa_supplicant/hostapd control interface library 3 * Copyright (c) 2004-2006, 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 WPA_CTRL_H 10#define WPA_CTRL_H 11 12#ifdef __cplusplus 13extern "C" { 14#endif 15 16/* wpa_supplicant control interface - fixed message prefixes */ 17 18/** Interactive request for identity/password/pin */ 19#define WPA_CTRL_REQ "CTRL-REQ-" 20 21/** Response to identity/password/pin request */ 22#define WPA_CTRL_RSP "CTRL-RSP-" 23 24/* Event messages with fixed prefix */ 25/** Authentication completed successfully and data connection enabled */ 26#define WPA_EVENT_CONNECTED "CTRL-EVENT-CONNECTED " 27/** Disconnected, data connection is not available */ 28#define WPA_EVENT_DISCONNECTED "CTRL-EVENT-DISCONNECTED " 29/** Association rejected during connection attempt */ 30#define WPA_EVENT_ASSOC_REJECT "CTRL-EVENT-ASSOC-REJECT " 31/** Authentication rejected during connection attempt */ 32#define WPA_EVENT_AUTH_REJECT "CTRL-EVENT-AUTH-REJECT " 33/** wpa_supplicant is exiting */ 34#define WPA_EVENT_TERMINATING "CTRL-EVENT-TERMINATING " 35/** Password change was completed successfully */ 36#define WPA_EVENT_PASSWORD_CHANGED "CTRL-EVENT-PASSWORD-CHANGED " 37/** EAP-Request/Notification received */ 38#define WPA_EVENT_EAP_NOTIFICATION "CTRL-EVENT-EAP-NOTIFICATION " 39/** EAP authentication started (EAP-Request/Identity received) */ 40#define WPA_EVENT_EAP_STARTED "CTRL-EVENT-EAP-STARTED " 41/** EAP method proposed by the server */ 42#define WPA_EVENT_EAP_PROPOSED_METHOD "CTRL-EVENT-EAP-PROPOSED-METHOD " 43/** EAP method selected */ 44#define WPA_EVENT_EAP_METHOD "CTRL-EVENT-EAP-METHOD " 45/** EAP peer certificate from TLS */ 46#define WPA_EVENT_EAP_PEER_CERT "CTRL-EVENT-EAP-PEER-CERT " 47/** EAP peer certificate alternative subject name component from TLS */ 48#define WPA_EVENT_EAP_PEER_ALT "CTRL-EVENT-EAP-PEER-ALT " 49/** EAP TLS certificate chain validation error */ 50#define WPA_EVENT_EAP_TLS_CERT_ERROR "CTRL-EVENT-EAP-TLS-CERT-ERROR " 51/** EAP status */ 52#define WPA_EVENT_EAP_STATUS "CTRL-EVENT-EAP-STATUS " 53/** EAP authentication completed successfully */ 54#define WPA_EVENT_EAP_SUCCESS "CTRL-EVENT-EAP-SUCCESS " 55/** EAP authentication failed (EAP-Failure received) */ 56#define WPA_EVENT_EAP_FAILURE "CTRL-EVENT-EAP-FAILURE " 57/** Network block temporarily disabled (e.g., due to authentication failure) */ 58#define WPA_EVENT_TEMP_DISABLED "CTRL-EVENT-SSID-TEMP-DISABLED " 59/** Temporarily disabled network block re-enabled */ 60#define WPA_EVENT_REENABLED "CTRL-EVENT-SSID-REENABLED " 61/** New scan started */ 62#define WPA_EVENT_SCAN_STARTED "CTRL-EVENT-SCAN-STARTED " 63/** New scan results available */ 64#define WPA_EVENT_SCAN_RESULTS "CTRL-EVENT-SCAN-RESULTS " 65/** Scan command failed */ 66#define WPA_EVENT_SCAN_FAILED "CTRL-EVENT-SCAN-FAILED " 67/** wpa_supplicant state change */ 68#define WPA_EVENT_STATE_CHANGE "CTRL-EVENT-STATE-CHANGE " 69/** A new BSS entry was added (followed by BSS entry id and BSSID) */ 70#define WPA_EVENT_BSS_ADDED "CTRL-EVENT-BSS-ADDED " 71/** A BSS entry was removed (followed by BSS entry id and BSSID) */ 72#define WPA_EVENT_BSS_REMOVED "CTRL-EVENT-BSS-REMOVED " 73/** No suitable network was found */ 74#define WPA_EVENT_NETWORK_NOT_FOUND "CTRL-EVENT-NETWORK-NOT-FOUND " 75/** Change in the signal level was reported by the driver */ 76#define WPA_EVENT_SIGNAL_CHANGE "CTRL-EVENT-SIGNAL-CHANGE " 77/** Regulatory domain channel */ 78#define WPA_EVENT_REGDOM_CHANGE "CTRL-EVENT-REGDOM-CHANGE " 79/** Channel switch (followed by freq=<MHz> and other channel parameters) */ 80#define WPA_EVENT_CHANNEL_SWITCH "CTRL-EVENT-CHANNEL-SWITCH " 81 82/** IP subnet status change notification 83 * 84 * When using an offloaded roaming mechanism where driver/firmware takes care 85 * of roaming and IP subnet validation checks post-roaming, this event can 86 * indicate whether IP subnet has changed. 87 * 88 * The event has a status=<0/1/2> parameter where 89 * 0 = unknown 90 * 1 = IP subnet unchanged (can continue to use the old IP address) 91 * 2 = IP subnet changed (need to get a new IP address) 92 */ 93#define WPA_EVENT_SUBNET_STATUS_UPDATE "CTRL-EVENT-SUBNET-STATUS-UPDATE " 94 95/** RSN IBSS 4-way handshakes completed with specified peer */ 96#define IBSS_RSN_COMPLETED "IBSS-RSN-COMPLETED " 97 98/** Notification of frequency conflict due to a concurrent operation. 99 * 100 * The indicated network is disabled and needs to be re-enabled before it can 101 * be used again. 102 */ 103#define WPA_EVENT_FREQ_CONFLICT "CTRL-EVENT-FREQ-CONFLICT " 104/** Frequency ranges that the driver recommends to avoid */ 105#define WPA_EVENT_AVOID_FREQ "CTRL-EVENT-AVOID-FREQ " 106/** WPS overlap detected in PBC mode */ 107#define WPS_EVENT_OVERLAP "WPS-OVERLAP-DETECTED " 108/** Available WPS AP with active PBC found in scan results */ 109#define WPS_EVENT_AP_AVAILABLE_PBC "WPS-AP-AVAILABLE-PBC " 110/** Available WPS AP with our address as authorized in scan results */ 111#define WPS_EVENT_AP_AVAILABLE_AUTH "WPS-AP-AVAILABLE-AUTH " 112/** Available WPS AP with recently selected PIN registrar found in scan results 113 */ 114#define WPS_EVENT_AP_AVAILABLE_PIN "WPS-AP-AVAILABLE-PIN " 115/** Available WPS AP found in scan results */ 116#define WPS_EVENT_AP_AVAILABLE "WPS-AP-AVAILABLE " 117/** A new credential received */ 118#define WPS_EVENT_CRED_RECEIVED "WPS-CRED-RECEIVED " 119/** M2D received */ 120#define WPS_EVENT_M2D "WPS-M2D " 121/** WPS registration failed after M2/M2D */ 122#define WPS_EVENT_FAIL "WPS-FAIL " 123/** WPS registration completed successfully */ 124#define WPS_EVENT_SUCCESS "WPS-SUCCESS " 125/** WPS enrollment attempt timed out and was terminated */ 126#define WPS_EVENT_TIMEOUT "WPS-TIMEOUT " 127/* PBC mode was activated */ 128#define WPS_EVENT_ACTIVE "WPS-PBC-ACTIVE " 129/* PBC mode was disabled */ 130#define WPS_EVENT_DISABLE "WPS-PBC-DISABLE " 131 132#define WPS_EVENT_ENROLLEE_SEEN "WPS-ENROLLEE-SEEN " 133 134#define WPS_EVENT_OPEN_NETWORK "WPS-OPEN-NETWORK " 135 136/* WPS ER events */ 137#define WPS_EVENT_ER_AP_ADD "WPS-ER-AP-ADD " 138#define WPS_EVENT_ER_AP_REMOVE "WPS-ER-AP-REMOVE " 139#define WPS_EVENT_ER_ENROLLEE_ADD "WPS-ER-ENROLLEE-ADD " 140#define WPS_EVENT_ER_ENROLLEE_REMOVE "WPS-ER-ENROLLEE-REMOVE " 141#define WPS_EVENT_ER_AP_SETTINGS "WPS-ER-AP-SETTINGS " 142#define WPS_EVENT_ER_SET_SEL_REG "WPS-ER-AP-SET-SEL-REG " 143 144/* MESH events */ 145#define MESH_GROUP_STARTED "MESH-GROUP-STARTED " 146#define MESH_GROUP_REMOVED "MESH-GROUP-REMOVED " 147#define MESH_PEER_CONNECTED "MESH-PEER-CONNECTED " 148#define MESH_PEER_DISCONNECTED "MESH-PEER-DISCONNECTED " 149/** Mesh SAE authentication failure. Wrong password suspected. */ 150#define MESH_SAE_AUTH_FAILURE "MESH-SAE-AUTH-FAILURE " 151#define MESH_SAE_AUTH_BLOCKED "MESH-SAE-AUTH-BLOCKED " 152 153/* WMM AC events */ 154#define WMM_AC_EVENT_TSPEC_ADDED "TSPEC-ADDED " 155#define WMM_AC_EVENT_TSPEC_REMOVED "TSPEC-REMOVED " 156#define WMM_AC_EVENT_TSPEC_REQ_FAILED "TSPEC-REQ-FAILED " 157 158/** P2P device found */ 159#define P2P_EVENT_DEVICE_FOUND "P2P-DEVICE-FOUND " 160 161/** P2P device lost */ 162#define P2P_EVENT_DEVICE_LOST "P2P-DEVICE-LOST " 163 164/** A P2P device requested GO negotiation, but we were not ready to start the 165 * negotiation */ 166#define P2P_EVENT_GO_NEG_REQUEST "P2P-GO-NEG-REQUEST " 167#define P2P_EVENT_GO_NEG_SUCCESS "P2P-GO-NEG-SUCCESS " 168#define P2P_EVENT_GO_NEG_FAILURE "P2P-GO-NEG-FAILURE " 169#define P2P_EVENT_GROUP_FORMATION_SUCCESS "P2P-GROUP-FORMATION-SUCCESS " 170#define P2P_EVENT_GROUP_FORMATION_FAILURE "P2P-GROUP-FORMATION-FAILURE " 171#define P2P_EVENT_GROUP_STARTED "P2P-GROUP-STARTED " 172#define P2P_EVENT_GROUP_REMOVED "P2P-GROUP-REMOVED " 173#define P2P_EVENT_CROSS_CONNECT_ENABLE "P2P-CROSS-CONNECT-ENABLE " 174#define P2P_EVENT_CROSS_CONNECT_DISABLE "P2P-CROSS-CONNECT-DISABLE " 175/* parameters: <peer address> <PIN> */ 176#define P2P_EVENT_PROV_DISC_SHOW_PIN "P2P-PROV-DISC-SHOW-PIN " 177/* parameters: <peer address> */ 178#define P2P_EVENT_PROV_DISC_ENTER_PIN "P2P-PROV-DISC-ENTER-PIN " 179/* parameters: <peer address> */ 180#define P2P_EVENT_PROV_DISC_PBC_REQ "P2P-PROV-DISC-PBC-REQ " 181/* parameters: <peer address> */ 182#define P2P_EVENT_PROV_DISC_PBC_RESP "P2P-PROV-DISC-PBC-RESP " 183/* parameters: <peer address> <status> */ 184#define P2P_EVENT_PROV_DISC_FAILURE "P2P-PROV-DISC-FAILURE" 185/* parameters: <freq> <src addr> <dialog token> <update indicator> <TLVs> */ 186#define P2P_EVENT_SERV_DISC_REQ "P2P-SERV-DISC-REQ " 187/* parameters: <src addr> <update indicator> <TLVs> */ 188#define P2P_EVENT_SERV_DISC_RESP "P2P-SERV-DISC-RESP " 189#define P2P_EVENT_SERV_ASP_RESP "P2P-SERV-ASP-RESP " 190#define P2P_EVENT_INVITATION_RECEIVED "P2P-INVITATION-RECEIVED " 191#define P2P_EVENT_INVITATION_RESULT "P2P-INVITATION-RESULT " 192#define P2P_EVENT_INVITATION_ACCEPTED "P2P-INVITATION-ACCEPTED " 193#define P2P_EVENT_FIND_STOPPED "P2P-FIND-STOPPED " 194#define P2P_EVENT_PERSISTENT_PSK_FAIL "P2P-PERSISTENT-PSK-FAIL id=" 195#define P2P_EVENT_PRESENCE_RESPONSE "P2P-PRESENCE-RESPONSE " 196#define P2P_EVENT_NFC_BOTH_GO "P2P-NFC-BOTH-GO " 197#define P2P_EVENT_NFC_PEER_CLIENT "P2P-NFC-PEER-CLIENT " 198#define P2P_EVENT_NFC_WHILE_CLIENT "P2P-NFC-WHILE-CLIENT " 199#define P2P_EVENT_FALLBACK_TO_GO_NEG "P2P-FALLBACK-TO-GO-NEG " 200#define P2P_EVENT_FALLBACK_TO_GO_NEG_ENABLED "P2P-FALLBACK-TO-GO-NEG-ENABLED " 201 202/* parameters: <PMF enabled> <timeout in ms> <Session Information URL> */ 203#define ESS_DISASSOC_IMMINENT "ESS-DISASSOC-IMMINENT " 204#define P2P_EVENT_REMOVE_AND_REFORM_GROUP "P2P-REMOVE-AND-REFORM-GROUP " 205 206#define P2P_EVENT_P2PS_PROVISION_START "P2PS-PROV-START " 207#define P2P_EVENT_P2PS_PROVISION_DONE "P2PS-PROV-DONE " 208 209#define INTERWORKING_AP "INTERWORKING-AP " 210#define INTERWORKING_BLACKLISTED "INTERWORKING-BLACKLISTED " 211#define INTERWORKING_NO_MATCH "INTERWORKING-NO-MATCH " 212#define INTERWORKING_ALREADY_CONNECTED "INTERWORKING-ALREADY-CONNECTED " 213#define INTERWORKING_SELECTED "INTERWORKING-SELECTED " 214 215/* Credential block added; parameters: <id> */ 216#define CRED_ADDED "CRED-ADDED " 217/* Credential block modified; parameters: <id> <field> */ 218#define CRED_MODIFIED "CRED-MODIFIED " 219/* Credential block removed; parameters: <id> */ 220#define CRED_REMOVED "CRED-REMOVED " 221 222#define GAS_RESPONSE_INFO "GAS-RESPONSE-INFO " 223/* parameters: <addr> <dialog_token> <freq> */ 224#define GAS_QUERY_START "GAS-QUERY-START " 225/* parameters: <addr> <dialog_token> <freq> <status_code> <result> */ 226#define GAS_QUERY_DONE "GAS-QUERY-DONE " 227 228/* parameters: <addr> <result> */ 229#define ANQP_QUERY_DONE "ANQP-QUERY-DONE " 230 231#define RX_ANQP "RX-ANQP " 232#define RX_HS20_ANQP "RX-HS20-ANQP " 233#define RX_HS20_ANQP_ICON "RX-HS20-ANQP-ICON " 234#define RX_HS20_ICON "RX-HS20-ICON " 235 236#define HS20_SUBSCRIPTION_REMEDIATION "HS20-SUBSCRIPTION-REMEDIATION " 237#define HS20_DEAUTH_IMMINENT_NOTICE "HS20-DEAUTH-IMMINENT-NOTICE " 238 239#define EXT_RADIO_WORK_START "EXT-RADIO-WORK-START " 240#define EXT_RADIO_WORK_TIMEOUT "EXT-RADIO-WORK-TIMEOUT " 241 242#define RRM_EVENT_NEIGHBOR_REP_RXED "RRM-NEIGHBOR-REP-RECEIVED " 243#define RRM_EVENT_NEIGHBOR_REP_FAILED "RRM-NEIGHBOR-REP-REQUEST-FAILED " 244 245/* hostapd control interface - fixed message prefixes */ 246#define WPS_EVENT_PIN_NEEDED "WPS-PIN-NEEDED " 247#define WPS_EVENT_NEW_AP_SETTINGS "WPS-NEW-AP-SETTINGS " 248#define WPS_EVENT_REG_SUCCESS "WPS-REG-SUCCESS " 249#define WPS_EVENT_AP_SETUP_LOCKED "WPS-AP-SETUP-LOCKED " 250#define WPS_EVENT_AP_SETUP_UNLOCKED "WPS-AP-SETUP-UNLOCKED " 251#define WPS_EVENT_AP_PIN_ENABLED "WPS-AP-PIN-ENABLED " 252#define WPS_EVENT_AP_PIN_DISABLED "WPS-AP-PIN-DISABLED " 253#define AP_STA_CONNECTED "AP-STA-CONNECTED " 254#define AP_STA_DISCONNECTED "AP-STA-DISCONNECTED " 255#define AP_STA_POSSIBLE_PSK_MISMATCH "AP-STA-POSSIBLE-PSK-MISMATCH " 256#define AP_STA_POLL_OK "AP-STA-POLL-OK " 257 258#define AP_REJECTED_MAX_STA "AP-REJECTED-MAX-STA " 259#define AP_REJECTED_BLOCKED_STA "AP-REJECTED-BLOCKED-STA " 260 261#define AP_EVENT_ENABLED "AP-ENABLED " 262#define AP_EVENT_DISABLED "AP-DISABLED " 263 264#define INTERFACE_ENABLED "INTERFACE-ENABLED " 265#define INTERFACE_DISABLED "INTERFACE-DISABLED " 266 267#define ACS_EVENT_STARTED "ACS-STARTED " 268#define ACS_EVENT_COMPLETED "ACS-COMPLETED " 269#define ACS_EVENT_FAILED "ACS-FAILED " 270 271#define DFS_EVENT_RADAR_DETECTED "DFS-RADAR-DETECTED " 272#define DFS_EVENT_NEW_CHANNEL "DFS-NEW-CHANNEL " 273#define DFS_EVENT_CAC_START "DFS-CAC-START " 274#define DFS_EVENT_CAC_COMPLETED "DFS-CAC-COMPLETED " 275#define DFS_EVENT_NOP_FINISHED "DFS-NOP-FINISHED " 276 277#define AP_CSA_FINISHED "AP-CSA-FINISHED " 278 279#define P2P_EVENT_LISTEN_OFFLOAD_STOP "P2P-LISTEN-OFFLOAD-STOPPED " 280#define P2P_LISTEN_OFFLOAD_STOP_REASON "P2P-LISTEN-OFFLOAD-STOP-REASON " 281 282/* BSS Transition Management Response frame received */ 283#define BSS_TM_RESP "BSS-TM-RESP " 284 285/* MBO IE with cellular data connection preference received */ 286#define MBO_CELL_PREFERENCE "MBO-CELL-PREFERENCE " 287 288/* BSS Transition Management Request received with MBO transition reason */ 289#define MBO_TRANSITION_REASON "MBO-TRANSITION-REASON " 290 291/* BSS command information masks */ 292 293#define WPA_BSS_MASK_ALL 0xFFFDFFFF 294#define WPA_BSS_MASK_ID BIT(0) 295#define WPA_BSS_MASK_BSSID BIT(1) 296#define WPA_BSS_MASK_FREQ BIT(2) 297#define WPA_BSS_MASK_BEACON_INT BIT(3) 298#define WPA_BSS_MASK_CAPABILITIES BIT(4) 299#define WPA_BSS_MASK_QUAL BIT(5) 300#define WPA_BSS_MASK_NOISE BIT(6) 301#define WPA_BSS_MASK_LEVEL BIT(7) 302#define WPA_BSS_MASK_TSF BIT(8) 303#define WPA_BSS_MASK_AGE BIT(9) 304#define WPA_BSS_MASK_IE BIT(10) 305#define WPA_BSS_MASK_FLAGS BIT(11) 306#define WPA_BSS_MASK_SSID BIT(12) 307#define WPA_BSS_MASK_WPS_SCAN BIT(13) 308#define WPA_BSS_MASK_P2P_SCAN BIT(14) 309#define WPA_BSS_MASK_INTERNETW BIT(15) 310#define WPA_BSS_MASK_WIFI_DISPLAY BIT(16) 311#define WPA_BSS_MASK_DELIM BIT(17) 312#define WPA_BSS_MASK_MESH_SCAN BIT(18) 313#define WPA_BSS_MASK_SNR BIT(19) 314#define WPA_BSS_MASK_EST_THROUGHPUT BIT(20) 315#define WPA_BSS_MASK_FST BIT(21) 316 317 318/* VENDOR_ELEM_* frame id values */ 319enum wpa_vendor_elem_frame { 320 VENDOR_ELEM_PROBE_REQ_P2P = 0, 321 VENDOR_ELEM_PROBE_RESP_P2P = 1, 322 VENDOR_ELEM_PROBE_RESP_P2P_GO = 2, 323 VENDOR_ELEM_BEACON_P2P_GO = 3, 324 VENDOR_ELEM_P2P_PD_REQ = 4, 325 VENDOR_ELEM_P2P_PD_RESP = 5, 326 VENDOR_ELEM_P2P_GO_NEG_REQ = 6, 327 VENDOR_ELEM_P2P_GO_NEG_RESP = 7, 328 VENDOR_ELEM_P2P_GO_NEG_CONF = 8, 329 VENDOR_ELEM_P2P_INV_REQ = 9, 330 VENDOR_ELEM_P2P_INV_RESP = 10, 331 VENDOR_ELEM_P2P_ASSOC_REQ = 11, 332 VENDOR_ELEM_P2P_ASSOC_RESP = 12, 333 VENDOR_ELEM_ASSOC_REQ = 13, 334 VENDOR_ELEM_PROBE_REQ = 14, 335 NUM_VENDOR_ELEM_FRAMES 336}; 337 338 339/* wpa_supplicant/hostapd control interface access */ 340 341/** 342 * wpa_ctrl_open - Open a control interface to wpa_supplicant/hostapd 343 * @ctrl_path: Path for UNIX domain sockets; ignored if UDP sockets are used. 344 * Returns: Pointer to abstract control interface data or %NULL on failure 345 * 346 * This function is used to open a control interface to wpa_supplicant/hostapd. 347 * ctrl_path is usually /var/run/wpa_supplicant or /var/run/hostapd. This path 348 * is configured in wpa_supplicant/hostapd and other programs using the control 349 * interface need to use matching path configuration. 350 */ 351struct wpa_ctrl * wpa_ctrl_open(const char *ctrl_path); 352 353/** 354 * wpa_ctrl_open2 - Open a control interface to wpa_supplicant/hostapd 355 * @ctrl_path: Path for UNIX domain sockets; ignored if UDP sockets are used. 356 * @cli_path: Path for client UNIX domain sockets; ignored if UDP socket 357 * is used. 358 * Returns: Pointer to abstract control interface data or %NULL on failure 359 * 360 * This function is used to open a control interface to wpa_supplicant/hostapd 361 * when the socket path for client need to be specified explicitly. Default 362 * ctrl_path is usually /var/run/wpa_supplicant or /var/run/hostapd and client 363 * socket path is /tmp. 364 */ 365struct wpa_ctrl * wpa_ctrl_open2(const char *ctrl_path, const char *cli_path); 366 367 368/** 369 * wpa_ctrl_close - Close a control interface to wpa_supplicant/hostapd 370 * @ctrl: Control interface data from wpa_ctrl_open() 371 * 372 * This function is used to close a control interface. 373 */ 374void wpa_ctrl_close(struct wpa_ctrl *ctrl); 375 376 377/** 378 * wpa_ctrl_request - Send a command to wpa_supplicant/hostapd 379 * @ctrl: Control interface data from wpa_ctrl_open() 380 * @cmd: Command; usually, ASCII text, e.g., "PING" 381 * @cmd_len: Length of the cmd in bytes 382 * @reply: Buffer for the response 383 * @reply_len: Reply buffer length 384 * @msg_cb: Callback function for unsolicited messages or %NULL if not used 385 * Returns: 0 on success, -1 on error (send or receive failed), -2 on timeout 386 * 387 * This function is used to send commands to wpa_supplicant/hostapd. Received 388 * response will be written to reply and reply_len is set to the actual length 389 * of the reply. This function will block for up to two seconds while waiting 390 * for the reply. If unsolicited messages are received, the blocking time may 391 * be longer. 392 * 393 * msg_cb can be used to register a callback function that will be called for 394 * unsolicited messages received while waiting for the command response. These 395 * messages may be received if wpa_ctrl_request() is called at the same time as 396 * wpa_supplicant/hostapd is sending such a message. This can happen only if 397 * the program has used wpa_ctrl_attach() to register itself as a monitor for 398 * event messages. Alternatively to msg_cb, programs can register two control 399 * interface connections and use one of them for commands and the other one for 400 * receiving event messages, in other words, call wpa_ctrl_attach() only for 401 * the control interface connection that will be used for event messages. 402 */ 403int wpa_ctrl_request(struct wpa_ctrl *ctrl, const char *cmd, size_t cmd_len, 404 char *reply, size_t *reply_len, 405 void (*msg_cb)(char *msg, size_t len)); 406 407 408/** 409 * wpa_ctrl_attach - Register as an event monitor for the control interface 410 * @ctrl: Control interface data from wpa_ctrl_open() 411 * Returns: 0 on success, -1 on failure, -2 on timeout 412 * 413 * This function registers the control interface connection as a monitor for 414 * wpa_supplicant/hostapd events. After a success wpa_ctrl_attach() call, the 415 * control interface connection starts receiving event messages that can be 416 * read with wpa_ctrl_recv(). 417 */ 418int wpa_ctrl_attach(struct wpa_ctrl *ctrl); 419 420 421/** 422 * wpa_ctrl_detach - Unregister event monitor from the control interface 423 * @ctrl: Control interface data from wpa_ctrl_open() 424 * Returns: 0 on success, -1 on failure, -2 on timeout 425 * 426 * This function unregisters the control interface connection as a monitor for 427 * wpa_supplicant/hostapd events, i.e., cancels the registration done with 428 * wpa_ctrl_attach(). 429 */ 430int wpa_ctrl_detach(struct wpa_ctrl *ctrl); 431 432 433/** 434 * wpa_ctrl_recv - Receive a pending control interface message 435 * @ctrl: Control interface data from wpa_ctrl_open() 436 * @reply: Buffer for the message data 437 * @reply_len: Length of the reply buffer 438 * Returns: 0 on success, -1 on failure 439 * 440 * This function will receive a pending control interface message. The received 441 * response will be written to reply and reply_len is set to the actual length 442 * of the reply. 443 444 * wpa_ctrl_recv() is only used for event messages, i.e., wpa_ctrl_attach() 445 * must have been used to register the control interface as an event monitor. 446 */ 447int wpa_ctrl_recv(struct wpa_ctrl *ctrl, char *reply, size_t *reply_len); 448 449 450/** 451 * wpa_ctrl_pending - Check whether there are pending event messages 452 * @ctrl: Control interface data from wpa_ctrl_open() 453 * Returns: 1 if there are pending messages, 0 if no, or -1 on error 454 * 455 * This function will check whether there are any pending control interface 456 * message available to be received with wpa_ctrl_recv(). wpa_ctrl_pending() is 457 * only used for event messages, i.e., wpa_ctrl_attach() must have been used to 458 * register the control interface as an event monitor. 459 */ 460int wpa_ctrl_pending(struct wpa_ctrl *ctrl); 461 462 463/** 464 * wpa_ctrl_get_fd - Get file descriptor used by the control interface 465 * @ctrl: Control interface data from wpa_ctrl_open() 466 * Returns: File descriptor used for the connection 467 * 468 * This function can be used to get the file descriptor that is used for the 469 * control interface connection. The returned value can be used, e.g., with 470 * select() while waiting for multiple events. 471 * 472 * The returned file descriptor must not be used directly for sending or 473 * receiving packets; instead, the library functions wpa_ctrl_request() and 474 * wpa_ctrl_recv() must be used for this. 475 */ 476int wpa_ctrl_get_fd(struct wpa_ctrl *ctrl); 477 478#ifdef ANDROID 479/** 480 * wpa_ctrl_cleanup() - Delete any local UNIX domain socket files that 481 * may be left over from clients that were previously connected to 482 * wpa_supplicant. This keeps these files from being orphaned in the 483 * event of crashes that prevented them from being removed as part 484 * of the normal orderly shutdown. 485 */ 486void wpa_ctrl_cleanup(void); 487#endif /* ANDROID */ 488 489#ifdef CONFIG_CTRL_IFACE_UDP 490/* Port range for multiple wpa_supplicant instances and multiple VIFs */ 491#define WPA_CTRL_IFACE_PORT 9877 492#define WPA_CTRL_IFACE_PORT_LIMIT 50 /* decremented from start */ 493#define WPA_GLOBAL_CTRL_IFACE_PORT 9878 494#define WPA_GLOBAL_CTRL_IFACE_PORT_LIMIT 20 /* incremented from start */ 495 496char * wpa_ctrl_get_remote_ifname(struct wpa_ctrl *ctrl); 497#endif /* CONFIG_CTRL_IFACE_UDP */ 498 499 500#ifdef __cplusplus 501} 502#endif 503 504#endif /* WPA_CTRL_H */ 505