src/common/wpa_ctrl.h

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