![Jouni Malinen](/assets/img/avatar_default.png)
Commit 4fdc8def88
changed the wpa_ctrl
socket to be be non-blocking, so the comment about wpa_ctrl_recv()
blocking is not valid anymore.
Signed-off-by: Jouni Malinen <j@w1.fi>
412 lines
16 KiB
C
412 lines
16 KiB
C
/*
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* wpa_supplicant/hostapd control interface library
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* Copyright (c) 2004-2006, Jouni Malinen <j@w1.fi>
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*
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* This software may be distributed under the terms of the BSD license.
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* See README for more details.
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*/
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#ifndef WPA_CTRL_H
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#define WPA_CTRL_H
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#ifdef __cplusplus
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extern "C" {
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#endif
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/* wpa_supplicant control interface - fixed message prefixes */
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/** Interactive request for identity/password/pin */
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#define WPA_CTRL_REQ "CTRL-REQ-"
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/** Response to identity/password/pin request */
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#define WPA_CTRL_RSP "CTRL-RSP-"
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/* Event messages with fixed prefix */
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/** Authentication completed successfully and data connection enabled */
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#define WPA_EVENT_CONNECTED "CTRL-EVENT-CONNECTED "
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/** Disconnected, data connection is not available */
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#define WPA_EVENT_DISCONNECTED "CTRL-EVENT-DISCONNECTED "
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/** Association rejected during connection attempt */
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#define WPA_EVENT_ASSOC_REJECT "CTRL-EVENT-ASSOC-REJECT "
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/** wpa_supplicant is exiting */
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#define WPA_EVENT_TERMINATING "CTRL-EVENT-TERMINATING "
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/** Password change was completed successfully */
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#define WPA_EVENT_PASSWORD_CHANGED "CTRL-EVENT-PASSWORD-CHANGED "
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/** EAP-Request/Notification received */
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#define WPA_EVENT_EAP_NOTIFICATION "CTRL-EVENT-EAP-NOTIFICATION "
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/** EAP authentication started (EAP-Request/Identity received) */
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#define WPA_EVENT_EAP_STARTED "CTRL-EVENT-EAP-STARTED "
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/** EAP method proposed by the server */
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#define WPA_EVENT_EAP_PROPOSED_METHOD "CTRL-EVENT-EAP-PROPOSED-METHOD "
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/** EAP method selected */
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#define WPA_EVENT_EAP_METHOD "CTRL-EVENT-EAP-METHOD "
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/** EAP peer certificate from TLS */
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#define WPA_EVENT_EAP_PEER_CERT "CTRL-EVENT-EAP-PEER-CERT "
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/** EAP TLS certificate chain validation error */
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#define WPA_EVENT_EAP_TLS_CERT_ERROR "CTRL-EVENT-EAP-TLS-CERT-ERROR "
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/** EAP status */
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#define WPA_EVENT_EAP_STATUS "CTRL-EVENT-EAP-STATUS "
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/** EAP authentication completed successfully */
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#define WPA_EVENT_EAP_SUCCESS "CTRL-EVENT-EAP-SUCCESS "
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/** EAP authentication failed (EAP-Failure received) */
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#define WPA_EVENT_EAP_FAILURE "CTRL-EVENT-EAP-FAILURE "
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/** Network block temporarily disabled (e.g., due to authentication failure) */
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#define WPA_EVENT_TEMP_DISABLED "CTRL-EVENT-SSID-TEMP-DISABLED "
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/** Temporarily disabled network block re-enabled */
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#define WPA_EVENT_REENABLED "CTRL-EVENT-SSID-REENABLED "
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/** New scan started */
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#define WPA_EVENT_SCAN_STARTED "CTRL-EVENT-SCAN-STARTED "
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/** New scan results available */
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#define WPA_EVENT_SCAN_RESULTS "CTRL-EVENT-SCAN-RESULTS "
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/** wpa_supplicant state change */
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#define WPA_EVENT_STATE_CHANGE "CTRL-EVENT-STATE-CHANGE "
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/** A new BSS entry was added (followed by BSS entry id and BSSID) */
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#define WPA_EVENT_BSS_ADDED "CTRL-EVENT-BSS-ADDED "
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/** A BSS entry was removed (followed by BSS entry id and BSSID) */
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#define WPA_EVENT_BSS_REMOVED "CTRL-EVENT-BSS-REMOVED "
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/** Change in the signal level was reported by the driver */
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#define WPA_EVENT_SIGNAL_CHANGE "CTRL-EVENT-SIGNAL-CHANGE "
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/** Regulatory domain channel */
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#define WPA_EVENT_REGDOM_CHANGE "CTRL-EVENT-REGDOM-CHANGE "
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/** RSN IBSS 4-way handshakes completed with specified peer */
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#define IBSS_RSN_COMPLETED "IBSS-RSN-COMPLETED "
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/** Notification of frequency conflict due to a concurrent operation.
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*
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* The indicated network is disabled and needs to be re-enabled before it can
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* be used again.
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*/
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#define WPA_EVENT_FREQ_CONFLICT "CTRL-EVENT-FREQ-CONFLICT "
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/** Frequency ranges that the driver recommends to avoid */
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#define WPA_EVENT_AVOID_FREQ "CTRL-EVENT-AVOID-FREQ "
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/** WPS overlap detected in PBC mode */
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#define WPS_EVENT_OVERLAP "WPS-OVERLAP-DETECTED "
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/** Available WPS AP with active PBC found in scan results */
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#define WPS_EVENT_AP_AVAILABLE_PBC "WPS-AP-AVAILABLE-PBC "
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/** Available WPS AP with our address as authorized in scan results */
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#define WPS_EVENT_AP_AVAILABLE_AUTH "WPS-AP-AVAILABLE-AUTH "
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/** Available WPS AP with recently selected PIN registrar found in scan results
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*/
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#define WPS_EVENT_AP_AVAILABLE_PIN "WPS-AP-AVAILABLE-PIN "
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/** Available WPS AP found in scan results */
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#define WPS_EVENT_AP_AVAILABLE "WPS-AP-AVAILABLE "
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/** A new credential received */
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#define WPS_EVENT_CRED_RECEIVED "WPS-CRED-RECEIVED "
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/** M2D received */
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#define WPS_EVENT_M2D "WPS-M2D "
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/** WPS registration failed after M2/M2D */
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#define WPS_EVENT_FAIL "WPS-FAIL "
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/** WPS registration completed successfully */
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#define WPS_EVENT_SUCCESS "WPS-SUCCESS "
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/** WPS enrollment attempt timed out and was terminated */
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#define WPS_EVENT_TIMEOUT "WPS-TIMEOUT "
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/* PBC mode was activated */
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#define WPS_EVENT_ACTIVE "WPS-PBC-ACTIVE "
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/* PBC mode was disabled */
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#define WPS_EVENT_DISABLE "WPS-PBC-DISABLE "
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#define WPS_EVENT_ENROLLEE_SEEN "WPS-ENROLLEE-SEEN "
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#define WPS_EVENT_OPEN_NETWORK "WPS-OPEN-NETWORK "
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/* WPS ER events */
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#define WPS_EVENT_ER_AP_ADD "WPS-ER-AP-ADD "
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#define WPS_EVENT_ER_AP_REMOVE "WPS-ER-AP-REMOVE "
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#define WPS_EVENT_ER_ENROLLEE_ADD "WPS-ER-ENROLLEE-ADD "
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#define WPS_EVENT_ER_ENROLLEE_REMOVE "WPS-ER-ENROLLEE-REMOVE "
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#define WPS_EVENT_ER_AP_SETTINGS "WPS-ER-AP-SETTINGS "
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#define WPS_EVENT_ER_SET_SEL_REG "WPS-ER-AP-SET-SEL-REG "
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/** P2P device found */
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#define P2P_EVENT_DEVICE_FOUND "P2P-DEVICE-FOUND "
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/** P2P device lost */
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#define P2P_EVENT_DEVICE_LOST "P2P-DEVICE-LOST "
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/** A P2P device requested GO negotiation, but we were not ready to start the
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* negotiation */
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#define P2P_EVENT_GO_NEG_REQUEST "P2P-GO-NEG-REQUEST "
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#define P2P_EVENT_GO_NEG_SUCCESS "P2P-GO-NEG-SUCCESS "
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#define P2P_EVENT_GO_NEG_FAILURE "P2P-GO-NEG-FAILURE "
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#define P2P_EVENT_GROUP_FORMATION_SUCCESS "P2P-GROUP-FORMATION-SUCCESS "
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#define P2P_EVENT_GROUP_FORMATION_FAILURE "P2P-GROUP-FORMATION-FAILURE "
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#define P2P_EVENT_GROUP_STARTED "P2P-GROUP-STARTED "
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#define P2P_EVENT_GROUP_REMOVED "P2P-GROUP-REMOVED "
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#define P2P_EVENT_CROSS_CONNECT_ENABLE "P2P-CROSS-CONNECT-ENABLE "
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#define P2P_EVENT_CROSS_CONNECT_DISABLE "P2P-CROSS-CONNECT-DISABLE "
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/* parameters: <peer address> <PIN> */
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#define P2P_EVENT_PROV_DISC_SHOW_PIN "P2P-PROV-DISC-SHOW-PIN "
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/* parameters: <peer address> */
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#define P2P_EVENT_PROV_DISC_ENTER_PIN "P2P-PROV-DISC-ENTER-PIN "
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/* parameters: <peer address> */
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#define P2P_EVENT_PROV_DISC_PBC_REQ "P2P-PROV-DISC-PBC-REQ "
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/* parameters: <peer address> */
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#define P2P_EVENT_PROV_DISC_PBC_RESP "P2P-PROV-DISC-PBC-RESP "
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/* parameters: <peer address> <status> */
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#define P2P_EVENT_PROV_DISC_FAILURE "P2P-PROV-DISC-FAILURE"
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/* parameters: <freq> <src addr> <dialog token> <update indicator> <TLVs> */
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#define P2P_EVENT_SERV_DISC_REQ "P2P-SERV-DISC-REQ "
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/* parameters: <src addr> <update indicator> <TLVs> */
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#define P2P_EVENT_SERV_DISC_RESP "P2P-SERV-DISC-RESP "
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#define P2P_EVENT_INVITATION_RECEIVED "P2P-INVITATION-RECEIVED "
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#define P2P_EVENT_INVITATION_RESULT "P2P-INVITATION-RESULT "
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#define P2P_EVENT_FIND_STOPPED "P2P-FIND-STOPPED "
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#define P2P_EVENT_PERSISTENT_PSK_FAIL "P2P-PERSISTENT-PSK-FAIL id="
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#define P2P_EVENT_PRESENCE_RESPONSE "P2P-PRESENCE-RESPONSE "
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#define P2P_EVENT_NFC_BOTH_GO "P2P-NFC-BOTH-GO "
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#define P2P_EVENT_NFC_PEER_CLIENT "P2P-NFC-PEER-CLIENT "
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#define P2P_EVENT_NFC_WHILE_CLIENT "P2P-NFC-WHILE-CLIENT "
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/* parameters: <PMF enabled> <timeout in ms> <Session Information URL> */
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#define ESS_DISASSOC_IMMINENT "ESS-DISASSOC-IMMINENT "
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#define P2P_EVENT_REMOVE_AND_REFORM_GROUP "P2P-REMOVE-AND-REFORM-GROUP "
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#define INTERWORKING_AP "INTERWORKING-AP "
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#define INTERWORKING_BLACKLISTED "INTERWORKING-BLACKLISTED "
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#define INTERWORKING_NO_MATCH "INTERWORKING-NO-MATCH "
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#define INTERWORKING_ALREADY_CONNECTED "INTERWORKING-ALREADY-CONNECTED "
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#define INTERWORKING_SELECTED "INTERWORKING-SELECTED "
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/* Credential block added; parameters: <id> */
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#define CRED_ADDED "CRED-ADDED "
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/* Credential block modified; parameters: <id> <field> */
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#define CRED_MODIFIED "CRED-MODIFIED "
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/* Credential block removed; parameters: <id> */
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#define CRED_REMOVED "CRED-REMOVED "
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#define GAS_RESPONSE_INFO "GAS-RESPONSE-INFO "
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/* parameters: <addr> <dialog_token> <freq> */
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#define GAS_QUERY_START "GAS-QUERY-START "
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/* parameters: <addr> <dialog_token> <freq> <status_code> <result> */
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#define GAS_QUERY_DONE "GAS-QUERY-DONE "
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#define HS20_SUBSCRIPTION_REMEDIATION "HS20-SUBSCRIPTION-REMEDIATION "
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#define HS20_DEAUTH_IMMINENT_NOTICE "HS20-DEAUTH-IMMINENT-NOTICE "
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#define EXT_RADIO_WORK_START "EXT-RADIO-WORK-START "
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#define EXT_RADIO_WORK_TIMEOUT "EXT-RADIO-WORK-TIMEOUT "
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/* hostapd control interface - fixed message prefixes */
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#define WPS_EVENT_PIN_NEEDED "WPS-PIN-NEEDED "
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#define WPS_EVENT_NEW_AP_SETTINGS "WPS-NEW-AP-SETTINGS "
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#define WPS_EVENT_REG_SUCCESS "WPS-REG-SUCCESS "
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#define WPS_EVENT_AP_SETUP_LOCKED "WPS-AP-SETUP-LOCKED "
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#define WPS_EVENT_AP_SETUP_UNLOCKED "WPS-AP-SETUP-UNLOCKED "
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#define WPS_EVENT_AP_PIN_ENABLED "WPS-AP-PIN-ENABLED "
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#define WPS_EVENT_AP_PIN_DISABLED "WPS-AP-PIN-DISABLED "
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#define AP_STA_CONNECTED "AP-STA-CONNECTED "
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#define AP_STA_DISCONNECTED "AP-STA-DISCONNECTED "
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#define AP_REJECTED_MAX_STA "AP-REJECTED-MAX-STA "
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#define AP_REJECTED_BLOCKED_STA "AP-REJECTED-BLOCKED-STA "
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#define AP_EVENT_ENABLED "AP-ENABLED "
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#define AP_EVENT_DISABLED "AP-DISABLED "
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#define ACS_EVENT_STARTED "ACS-STARTED "
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#define ACS_EVENT_COMPLETED "ACS-COMPLETED "
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#define ACS_EVENT_FAILED "ACS-FAILED "
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#define DFS_EVENT_RADAR_DETECTED "DFS-RADAR-DETECTED "
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#define DFS_EVENT_NEW_CHANNEL "DFS-NEW-CHANNEL "
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#define DFS_EVENT_CAC_START "DFS-CAC-START "
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#define DFS_EVENT_CAC_COMPLETED "DFS-CAC-COMPLETED "
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#define DFS_EVENT_NOP_FINISHED "DFS-NOP-FINISHED "
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#define AP_CSA_FINISHED "AP-CSA-FINISHED "
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/* BSS command information masks */
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#define WPA_BSS_MASK_ALL 0xFFFDFFFF
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#define WPA_BSS_MASK_ID BIT(0)
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#define WPA_BSS_MASK_BSSID BIT(1)
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#define WPA_BSS_MASK_FREQ BIT(2)
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#define WPA_BSS_MASK_BEACON_INT BIT(3)
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#define WPA_BSS_MASK_CAPABILITIES BIT(4)
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#define WPA_BSS_MASK_QUAL BIT(5)
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#define WPA_BSS_MASK_NOISE BIT(6)
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#define WPA_BSS_MASK_LEVEL BIT(7)
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#define WPA_BSS_MASK_TSF BIT(8)
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#define WPA_BSS_MASK_AGE BIT(9)
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#define WPA_BSS_MASK_IE BIT(10)
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#define WPA_BSS_MASK_FLAGS BIT(11)
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#define WPA_BSS_MASK_SSID BIT(12)
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#define WPA_BSS_MASK_WPS_SCAN BIT(13)
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#define WPA_BSS_MASK_P2P_SCAN BIT(14)
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#define WPA_BSS_MASK_INTERNETW BIT(15)
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#define WPA_BSS_MASK_WIFI_DISPLAY BIT(16)
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#define WPA_BSS_MASK_DELIM BIT(17)
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/* VENDOR_ELEM_* frame id values */
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enum wpa_vendor_elem_frame {
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VENDOR_ELEM_PROBE_REQ_P2P = 0,
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VENDOR_ELEM_PROBE_RESP_P2P = 1,
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VENDOR_ELEM_PROBE_RESP_P2P_GO = 2,
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VENDOR_ELEM_BEACON_P2P_GO = 3,
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VENDOR_ELEM_P2P_PD_REQ = 4,
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VENDOR_ELEM_P2P_PD_RESP = 5,
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VENDOR_ELEM_P2P_GO_NEG_REQ = 6,
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VENDOR_ELEM_P2P_GO_NEG_RESP = 7,
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VENDOR_ELEM_P2P_GO_NEG_CONF = 8,
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VENDOR_ELEM_P2P_INV_REQ = 9,
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VENDOR_ELEM_P2P_INV_RESP = 10,
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VENDOR_ELEM_P2P_ASSOC_REQ = 11,
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VENDOR_ELEM_P2P_ASSOC_RESP = 12,
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NUM_VENDOR_ELEM_FRAMES
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};
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/* wpa_supplicant/hostapd control interface access */
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/**
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* wpa_ctrl_open - Open a control interface to wpa_supplicant/hostapd
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* @ctrl_path: Path for UNIX domain sockets; ignored if UDP sockets are used.
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* Returns: Pointer to abstract control interface data or %NULL on failure
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*
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* This function is used to open a control interface to wpa_supplicant/hostapd.
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* ctrl_path is usually /var/run/wpa_supplicant or /var/run/hostapd. This path
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* is configured in wpa_supplicant/hostapd and other programs using the control
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* interface need to use matching path configuration.
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*/
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struct wpa_ctrl * wpa_ctrl_open(const char *ctrl_path);
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/**
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* wpa_ctrl_close - Close a control interface to wpa_supplicant/hostapd
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* @ctrl: Control interface data from wpa_ctrl_open()
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*
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* This function is used to close a control interface.
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*/
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void wpa_ctrl_close(struct wpa_ctrl *ctrl);
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/**
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* wpa_ctrl_request - Send a command to wpa_supplicant/hostapd
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* @ctrl: Control interface data from wpa_ctrl_open()
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* @cmd: Command; usually, ASCII text, e.g., "PING"
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* @cmd_len: Length of the cmd in bytes
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* @reply: Buffer for the response
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* @reply_len: Reply buffer length
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* @msg_cb: Callback function for unsolicited messages or %NULL if not used
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* Returns: 0 on success, -1 on error (send or receive failed), -2 on timeout
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*
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* This function is used to send commands to wpa_supplicant/hostapd. Received
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* response will be written to reply and reply_len is set to the actual length
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* of the reply. This function will block for up to two seconds while waiting
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* for the reply. If unsolicited messages are received, the blocking time may
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* be longer.
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*
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* msg_cb can be used to register a callback function that will be called for
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* unsolicited messages received while waiting for the command response. These
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* messages may be received if wpa_ctrl_request() is called at the same time as
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* wpa_supplicant/hostapd is sending such a message. This can happen only if
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* the program has used wpa_ctrl_attach() to register itself as a monitor for
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* event messages. Alternatively to msg_cb, programs can register two control
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* interface connections and use one of them for commands and the other one for
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* receiving event messages, in other words, call wpa_ctrl_attach() only for
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* the control interface connection that will be used for event messages.
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*/
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int wpa_ctrl_request(struct wpa_ctrl *ctrl, const char *cmd, size_t cmd_len,
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char *reply, size_t *reply_len,
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void (*msg_cb)(char *msg, size_t len));
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/**
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* wpa_ctrl_attach - Register as an event monitor for the control interface
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* @ctrl: Control interface data from wpa_ctrl_open()
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* Returns: 0 on success, -1 on failure, -2 on timeout
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*
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* This function registers the control interface connection as a monitor for
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* wpa_supplicant/hostapd events. After a success wpa_ctrl_attach() call, the
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* control interface connection starts receiving event messages that can be
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* read with wpa_ctrl_recv().
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*/
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int wpa_ctrl_attach(struct wpa_ctrl *ctrl);
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/**
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* wpa_ctrl_detach - Unregister event monitor from the control interface
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* @ctrl: Control interface data from wpa_ctrl_open()
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* Returns: 0 on success, -1 on failure, -2 on timeout
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*
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* This function unregisters the control interface connection as a monitor for
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* wpa_supplicant/hostapd events, i.e., cancels the registration done with
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* wpa_ctrl_attach().
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*/
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int wpa_ctrl_detach(struct wpa_ctrl *ctrl);
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/**
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* wpa_ctrl_recv - Receive a pending control interface message
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* @ctrl: Control interface data from wpa_ctrl_open()
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* @reply: Buffer for the message data
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* @reply_len: Length of the reply buffer
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* Returns: 0 on success, -1 on failure
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*
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* This function will receive a pending control interface message. The received
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* response will be written to reply and reply_len is set to the actual length
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* of the reply.
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* wpa_ctrl_recv() is only used for event messages, i.e., wpa_ctrl_attach()
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* must have been used to register the control interface as an event monitor.
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*/
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int wpa_ctrl_recv(struct wpa_ctrl *ctrl, char *reply, size_t *reply_len);
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/**
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* wpa_ctrl_pending - Check whether there are pending event messages
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* @ctrl: Control interface data from wpa_ctrl_open()
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* Returns: 1 if there are pending messages, 0 if no, or -1 on error
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*
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* This function will check whether there are any pending control interface
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* message available to be received with wpa_ctrl_recv(). wpa_ctrl_pending() is
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* only used for event messages, i.e., wpa_ctrl_attach() must have been used to
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* register the control interface as an event monitor.
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*/
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int wpa_ctrl_pending(struct wpa_ctrl *ctrl);
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/**
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* wpa_ctrl_get_fd - Get file descriptor used by the control interface
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* @ctrl: Control interface data from wpa_ctrl_open()
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* Returns: File descriptor used for the connection
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*
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* This function can be used to get the file descriptor that is used for the
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* control interface connection. The returned value can be used, e.g., with
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* select() while waiting for multiple events.
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*
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* The returned file descriptor must not be used directly for sending or
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* receiving packets; instead, the library functions wpa_ctrl_request() and
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* wpa_ctrl_recv() must be used for this.
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*/
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int wpa_ctrl_get_fd(struct wpa_ctrl *ctrl);
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char * wpa_ctrl_get_remote_ifname(struct wpa_ctrl *ctrl);
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#ifdef ANDROID
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/**
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* wpa_ctrl_cleanup() - Delete any local UNIX domain socket files that
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* may be left over from clients that were previously connected to
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* wpa_supplicant. This keeps these files from being orphaned in the
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* event of crashes that prevented them from being removed as part
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* of the normal orderly shutdown.
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*/
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void wpa_ctrl_cleanup(void);
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#endif /* ANDROID */
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#ifdef CONFIG_CTRL_IFACE_UDP
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/* Port range for multiple wpa_supplicant instances and multiple VIFs */
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#define WPA_CTRL_IFACE_PORT 9877
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#define WPA_CTRL_IFACE_PORT_LIMIT 50 /* decremented from start */
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#define WPA_GLOBAL_CTRL_IFACE_PORT 9878
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#define WPA_GLOBAL_CTRL_IFACE_PORT_LIMIT 20 /* incremented from start */
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#endif /* CONFIG_CTRL_IFACE_UDP */
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#ifdef __cplusplus
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}
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#endif
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#endif /* WPA_CTRL_H */
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