2 * wpa_supplicant/hostapd control interface library
3 * Copyright (c) 2004-2006, Jouni Malinen <j@w1.fi>
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.
9 * Alternatively, this software may be distributed under the terms of BSD
12 * See README and COPYING for more details.
22 /* wpa_supplicant control interface - fixed message prefixes */
24 /** Interactive request for identity/password/pin */
25 #define WPA_CTRL_REQ "CTRL-REQ-"
27 /** Response to identity/password/pin request */
28 #define WPA_CTRL_RSP "CTRL-RSP-"
30 /* Event messages with fixed prefix */
31 /** Authentication completed successfully and data connection enabled */
32 #define WPA_EVENT_CONNECTED "CTRL-EVENT-CONNECTED "
33 /** Disconnected, data connection is not available */
34 #define WPA_EVENT_DISCONNECTED "CTRL-EVENT-DISCONNECTED "
35 /** Association rejected during connection attempt */
36 #define WPA_EVENT_ASSOC_REJECT "CTRL-EVENT-ASSOC-REJECT "
37 /** wpa_supplicant is exiting */
38 #define WPA_EVENT_TERMINATING "CTRL-EVENT-TERMINATING "
39 /** Password change was completed successfully */
40 #define WPA_EVENT_PASSWORD_CHANGED "CTRL-EVENT-PASSWORD-CHANGED "
41 /** EAP-Request/Notification received */
42 #define WPA_EVENT_EAP_NOTIFICATION "CTRL-EVENT-EAP-NOTIFICATION "
43 /** EAP authentication started (EAP-Request/Identity received) */
44 #define WPA_EVENT_EAP_STARTED "CTRL-EVENT-EAP-STARTED "
45 /** EAP method proposed by the server */
46 #define WPA_EVENT_EAP_PROPOSED_METHOD "CTRL-EVENT-EAP-PROPOSED-METHOD "
47 /** EAP method selected */
48 #define WPA_EVENT_EAP_METHOD "CTRL-EVENT-EAP-METHOD "
49 /** EAP peer certificate from TLS */
50 #define WPA_EVENT_EAP_PEER_CERT "CTRL-EVENT-EAP-PEER-CERT "
51 /** EAP TLS certificate chain validation error */
52 #define WPA_EVENT_EAP_TLS_CERT_ERROR "CTRL-EVENT-EAP-TLS-CERT-ERROR "
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 /** New scan results available */
58 #define WPA_EVENT_SCAN_RESULTS "CTRL-EVENT-SCAN-RESULTS "
59 /** wpa_supplicant state change */
60 #define WPA_EVENT_STATE_CHANGE "CTRL-EVENT-STATE-CHANGE "
61 /** A new BSS entry was added (followed by BSS entry id and BSSID) */
62 #define WPA_EVENT_BSS_ADDED "CTRL-EVENT-BSS-ADDED "
63 /** A BSS entry was removed (followed by BSS entry id and BSSID) */
64 #define WPA_EVENT_BSS_REMOVED "CTRL-EVENT-BSS-REMOVED "
66 /** WPS overlap detected in PBC mode */
67 #define WPS_EVENT_OVERLAP "WPS-OVERLAP-DETECTED "
68 /** Available WPS AP with active PBC found in scan results */
69 #define WPS_EVENT_AP_AVAILABLE_PBC "WPS-AP-AVAILABLE-PBC "
70 /** Available WPS AP with our address as authorized in scan results */
71 #define WPS_EVENT_AP_AVAILABLE_AUTH "WPS-AP-AVAILABLE-AUTH "
72 /** Available WPS AP with recently selected PIN registrar found in scan results
74 #define WPS_EVENT_AP_AVAILABLE_PIN "WPS-AP-AVAILABLE-PIN "
75 /** Available WPS AP found in scan results */
76 #define WPS_EVENT_AP_AVAILABLE "WPS-AP-AVAILABLE "
77 /** A new credential received */
78 #define WPS_EVENT_CRED_RECEIVED "WPS-CRED-RECEIVED "
80 #define WPS_EVENT_M2D "WPS-M2D "
81 /** WPS registration failed after M2/M2D */
82 #define WPS_EVENT_FAIL "WPS-FAIL "
83 /** WPS registration completed successfully */
84 #define WPS_EVENT_SUCCESS "WPS-SUCCESS "
85 /** WPS enrollment attempt timed out and was terminated */
86 #define WPS_EVENT_TIMEOUT "WPS-TIMEOUT "
88 #define WPS_EVENT_ENROLLEE_SEEN "WPS-ENROLLEE-SEEN "
90 #define WPS_EVENT_OPEN_NETWORK "WPS-OPEN-NETWORK "
93 #define WPS_EVENT_ER_AP_ADD "WPS-ER-AP-ADD "
94 #define WPS_EVENT_ER_AP_REMOVE "WPS-ER-AP-REMOVE "
95 #define WPS_EVENT_ER_ENROLLEE_ADD "WPS-ER-ENROLLEE-ADD "
96 #define WPS_EVENT_ER_ENROLLEE_REMOVE "WPS-ER-ENROLLEE-REMOVE "
97 #define WPS_EVENT_ER_AP_SETTINGS "WPS-ER-AP-SETTINGS "
98 #define WPS_EVENT_ER_SET_SEL_REG "WPS-ER-AP-SET-SEL-REG "
100 /** P2P device found */
101 #define P2P_EVENT_DEVICE_FOUND "P2P-DEVICE-FOUND "
102 /** A P2P device requested GO negotiation, but we were not ready to start the
104 #define P2P_EVENT_GO_NEG_REQUEST "P2P-GO-NEG-REQUEST "
105 #define P2P_EVENT_GO_NEG_SUCCESS "P2P-GO-NEG-SUCCESS "
106 #define P2P_EVENT_GO_NEG_FAILURE "P2P-GO-NEG-FAILURE "
107 #define P2P_EVENT_GROUP_FORMATION_SUCCESS "P2P-GROUP-FORMATION-SUCCESS "
108 #define P2P_EVENT_GROUP_FORMATION_FAILURE "P2P-GROUP-FORMATION-FAILURE "
109 #define P2P_EVENT_GROUP_STARTED "P2P-GROUP-STARTED "
110 #define P2P_EVENT_GROUP_REMOVED "P2P-GROUP-REMOVED "
111 #define P2P_EVENT_CROSS_CONNECT_ENABLE "P2P-CROSS-CONNECT-ENABLE "
112 #define P2P_EVENT_CROSS_CONNECT_DISABLE "P2P-CROSS-CONNECT-DISABLE "
113 /* parameters: <peer address> <PIN> */
114 #define P2P_EVENT_PROV_DISC_SHOW_PIN "P2P-PROV-DISC-SHOW-PIN "
115 /* parameters: <peer address> */
116 #define P2P_EVENT_PROV_DISC_ENTER_PIN "P2P-PROV-DISC-ENTER-PIN "
117 /* parameters: <peer address> */
118 #define P2P_EVENT_PROV_DISC_PBC_REQ "P2P-PROV-DISC-PBC-REQ "
119 /* parameters: <peer address> */
120 #define P2P_EVENT_PROV_DISC_PBC_RESP "P2P-PROV-DISC-PBC-RESP "
121 /* parameters: <freq> <src addr> <dialog token> <update indicator> <TLVs> */
122 #define P2P_EVENT_SERV_DISC_REQ "P2P-SERV-DISC-REQ "
123 /* parameters: <src addr> <update indicator> <TLVs> */
124 #define P2P_EVENT_SERV_DISC_RESP "P2P-SERV-DISC-RESP "
125 #define P2P_EVENT_INVITATION_RECEIVED "P2P-INVITATION-RECEIVED "
126 #define P2P_EVENT_INVITATION_RESULT "P2P-INVITATION-RESULT "
128 /* hostapd control interface - fixed message prefixes */
129 #define WPS_EVENT_PIN_NEEDED "WPS-PIN-NEEDED "
130 #define WPS_EVENT_NEW_AP_SETTINGS "WPS-NEW-AP-SETTINGS "
131 #define WPS_EVENT_REG_SUCCESS "WPS-REG-SUCCESS "
132 #define WPS_EVENT_AP_SETUP_LOCKED "WPS-AP-SETUP-LOCKED "
133 #define WPS_EVENT_AP_SETUP_UNLOCKED "WPS-AP-SETUP-UNLOCKED "
134 #define WPS_EVENT_AP_PIN_ENABLED "WPS-AP-PIN-ENABLED "
135 #define WPS_EVENT_AP_PIN_DISABLED "WPS-AP-PIN-DISABLED "
136 #define AP_STA_CONNECTED "AP-STA-CONNECTED "
137 #define AP_STA_DISCONNECTED "AP-STA-DISCONNECTED "
140 /* wpa_supplicant/hostapd control interface access */
143 * wpa_ctrl_open - Open a control interface to wpa_supplicant/hostapd
144 * @ctrl_path: Path for UNIX domain sockets; ignored if UDP sockets are used.
145 * Returns: Pointer to abstract control interface data or %NULL on failure
147 * This function is used to open a control interface to wpa_supplicant/hostapd.
148 * ctrl_path is usually /var/run/wpa_supplicant or /var/run/hostapd. This path
149 * is configured in wpa_supplicant/hostapd and other programs using the control
150 * interface need to use matching path configuration.
152 struct wpa_ctrl * wpa_ctrl_open(const char *ctrl_path);
156 * wpa_ctrl_close - Close a control interface to wpa_supplicant/hostapd
157 * @ctrl: Control interface data from wpa_ctrl_open()
159 * This function is used to close a control interface.
161 void wpa_ctrl_close(struct wpa_ctrl *ctrl);
165 * wpa_ctrl_request - Send a command to wpa_supplicant/hostapd
166 * @ctrl: Control interface data from wpa_ctrl_open()
167 * @cmd: Command; usually, ASCII text, e.g., "PING"
168 * @cmd_len: Length of the cmd in bytes
169 * @reply: Buffer for the response
170 * @reply_len: Reply buffer length
171 * @msg_cb: Callback function for unsolicited messages or %NULL if not used
172 * Returns: 0 on success, -1 on error (send or receive failed), -2 on timeout
174 * This function is used to send commands to wpa_supplicant/hostapd. Received
175 * response will be written to reply and reply_len is set to the actual length
176 * of the reply. This function will block for up to two seconds while waiting
177 * for the reply. If unsolicited messages are received, the blocking time may
180 * msg_cb can be used to register a callback function that will be called for
181 * unsolicited messages received while waiting for the command response. These
182 * messages may be received if wpa_ctrl_request() is called at the same time as
183 * wpa_supplicant/hostapd is sending such a message. This can happen only if
184 * the program has used wpa_ctrl_attach() to register itself as a monitor for
185 * event messages. Alternatively to msg_cb, programs can register two control
186 * interface connections and use one of them for commands and the other one for
187 * receiving event messages, in other words, call wpa_ctrl_attach() only for
188 * the control interface connection that will be used for event messages.
190 int wpa_ctrl_request(struct wpa_ctrl *ctrl, const char *cmd, size_t cmd_len,
191 char *reply, size_t *reply_len,
192 void (*msg_cb)(char *msg, size_t len));
196 * wpa_ctrl_attach - Register as an event monitor for the control interface
197 * @ctrl: Control interface data from wpa_ctrl_open()
198 * Returns: 0 on success, -1 on failure, -2 on timeout
200 * This function registers the control interface connection as a monitor for
201 * wpa_supplicant/hostapd events. After a success wpa_ctrl_attach() call, the
202 * control interface connection starts receiving event messages that can be
203 * read with wpa_ctrl_recv().
205 int wpa_ctrl_attach(struct wpa_ctrl *ctrl);
209 * wpa_ctrl_detach - Unregister event monitor from the control interface
210 * @ctrl: Control interface data from wpa_ctrl_open()
211 * Returns: 0 on success, -1 on failure, -2 on timeout
213 * This function unregisters the control interface connection as a monitor for
214 * wpa_supplicant/hostapd events, i.e., cancels the registration done with
217 int wpa_ctrl_detach(struct wpa_ctrl *ctrl);
221 * wpa_ctrl_recv - Receive a pending control interface message
222 * @ctrl: Control interface data from wpa_ctrl_open()
223 * @reply: Buffer for the message data
224 * @reply_len: Length of the reply buffer
225 * Returns: 0 on success, -1 on failure
227 * This function will receive a pending control interface message. This
228 * function will block if no messages are available. The received response will
229 * be written to reply and reply_len is set to the actual length of the reply.
230 * wpa_ctrl_recv() is only used for event messages, i.e., wpa_ctrl_attach()
231 * must have been used to register the control interface as an event monitor.
233 int wpa_ctrl_recv(struct wpa_ctrl *ctrl, char *reply, size_t *reply_len);
237 * wpa_ctrl_pending - Check whether there are pending event messages
238 * @ctrl: Control interface data from wpa_ctrl_open()
239 * Returns: 1 if there are pending messages, 0 if no, or -1 on error
241 * This function will check whether there are any pending control interface
242 * message available to be received with wpa_ctrl_recv(). wpa_ctrl_pending() is
243 * only used for event messages, i.e., wpa_ctrl_attach() must have been used to
244 * register the control interface as an event monitor.
246 int wpa_ctrl_pending(struct wpa_ctrl *ctrl);
250 * wpa_ctrl_get_fd - Get file descriptor used by the control interface
251 * @ctrl: Control interface data from wpa_ctrl_open()
252 * Returns: File descriptor used for the connection
254 * This function can be used to get the file descriptor that is used for the
255 * control interface connection. The returned value can be used, e.g., with
256 * select() while waiting for multiple events.
258 * The returned file descriptor must not be used directly for sending or
259 * receiving packets; instead, the library functions wpa_ctrl_request() and
260 * wpa_ctrl_recv() must be used for this.
262 int wpa_ctrl_get_fd(struct wpa_ctrl *ctrl);
264 #ifdef CONFIG_CTRL_IFACE_UDP
265 #define WPA_CTRL_IFACE_PORT 9877
266 #define WPA_GLOBAL_CTRL_IFACE_PORT 9878
267 #endif /* CONFIG_CTRL_IFACE_UDP */
274 #endif /* WPA_CTRL_H */