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 authentication completed successfully */ 48 #define WPA_EVENT_EAP_SUCCESS "CTRL-EVENT-EAP-SUCCESS " 49 /** EAP authentication failed (EAP-Failure received) */ 50 #define WPA_EVENT_EAP_FAILURE "CTRL-EVENT-EAP-FAILURE " 51 /** Network block temporarily disabled (e.g., due to authentication failure) */ 52 #define WPA_EVENT_TEMP_DISABLED "CTRL-EVENT-SSID-TEMP-DISABLED " 53 /** Temporarily disabled network block re-enabled */ 54 #define WPA_EVENT_REENABLED "CTRL-EVENT-SSID-REENABLED " 55 /** New scan results available */ 56 #define WPA_EVENT_SCAN_RESULTS "CTRL-EVENT-SCAN-RESULTS " 57 /** wpa_supplicant state change */ 58 #define WPA_EVENT_STATE_CHANGE "CTRL-EVENT-STATE-CHANGE " 59 /** A new BSS entry was added (followed by BSS entry id and BSSID) */ 60 #define WPA_EVENT_BSS_ADDED "CTRL-EVENT-BSS-ADDED " 61 /** A BSS entry was removed (followed by BSS entry id and BSSID) */ 62 #define WPA_EVENT_BSS_REMOVED "CTRL-EVENT-BSS-REMOVED " 63 #ifdef ANDROID_P2P 64 /** Notify the Userspace about the freq conflict */ 65 #define WPA_EVENT_FREQ_CONFLICT "CTRL-EVENT-FREQ-CONFLICT " 66 #endif 67 68 /** WPS overlap detected in PBC mode */ 69 #define WPS_EVENT_OVERLAP "WPS-OVERLAP-DETECTED " 70 /** Available WPS AP with active PBC found in scan results */ 71 #define WPS_EVENT_AP_AVAILABLE_PBC "WPS-AP-AVAILABLE-PBC " 72 /** Available WPS AP with our address as authorized in scan results */ 73 #define WPS_EVENT_AP_AVAILABLE_AUTH "WPS-AP-AVAILABLE-AUTH " 74 /** Available WPS AP with recently selected PIN registrar found in scan results 75 */ 76 #define WPS_EVENT_AP_AVAILABLE_PIN "WPS-AP-AVAILABLE-PIN " 77 /** Available WPS AP found in scan results */ 78 #define WPS_EVENT_AP_AVAILABLE "WPS-AP-AVAILABLE " 79 /** A new credential received */ 80 #define WPS_EVENT_CRED_RECEIVED "WPS-CRED-RECEIVED " 81 /** M2D received */ 82 #define WPS_EVENT_M2D "WPS-M2D " 83 /** WPS registration failed after M2/M2D */ 84 #define WPS_EVENT_FAIL "WPS-FAIL " 85 /** WPS registration completed successfully */ 86 #define WPS_EVENT_SUCCESS "WPS-SUCCESS " 87 /** WPS enrollment attempt timed out and was terminated */ 88 #define WPS_EVENT_TIMEOUT "WPS-TIMEOUT " 89 90 #define WPS_EVENT_ENROLLEE_SEEN "WPS-ENROLLEE-SEEN " 91 92 #define WPS_EVENT_OPEN_NETWORK "WPS-OPEN-NETWORK " 93 94 /* WPS ER events */ 95 #define WPS_EVENT_ER_AP_ADD "WPS-ER-AP-ADD " 96 #define WPS_EVENT_ER_AP_REMOVE "WPS-ER-AP-REMOVE " 97 #define WPS_EVENT_ER_ENROLLEE_ADD "WPS-ER-ENROLLEE-ADD " 98 #define WPS_EVENT_ER_ENROLLEE_REMOVE "WPS-ER-ENROLLEE-REMOVE " 99 #define WPS_EVENT_ER_AP_SETTINGS "WPS-ER-AP-SETTINGS " 100 #define WPS_EVENT_ER_SET_SEL_REG "WPS-ER-AP-SET-SEL-REG " 101 102 /** P2P device found */ 103 #define P2P_EVENT_DEVICE_FOUND "P2P-DEVICE-FOUND " 104 105 /** P2P device lost */ 106 #define P2P_EVENT_DEVICE_LOST "P2P-DEVICE-LOST " 107 108 /** A P2P device requested GO negotiation, but we were not ready to start the 109 * negotiation */ 110 #define P2P_EVENT_GO_NEG_REQUEST "P2P-GO-NEG-REQUEST " 111 #define P2P_EVENT_GO_NEG_SUCCESS "P2P-GO-NEG-SUCCESS " 112 #define P2P_EVENT_GO_NEG_FAILURE "P2P-GO-NEG-FAILURE " 113 #define P2P_EVENT_GROUP_FORMATION_SUCCESS "P2P-GROUP-FORMATION-SUCCESS " 114 #define P2P_EVENT_GROUP_FORMATION_FAILURE "P2P-GROUP-FORMATION-FAILURE " 115 #define P2P_EVENT_GROUP_STARTED "P2P-GROUP-STARTED " 116 #define P2P_EVENT_GROUP_REMOVED "P2P-GROUP-REMOVED " 117 #define P2P_EVENT_CROSS_CONNECT_ENABLE "P2P-CROSS-CONNECT-ENABLE " 118 #define P2P_EVENT_CROSS_CONNECT_DISABLE "P2P-CROSS-CONNECT-DISABLE " 119 /* parameters: <peer address> <PIN> */ 120 #define P2P_EVENT_PROV_DISC_SHOW_PIN "P2P-PROV-DISC-SHOW-PIN " 121 /* parameters: <peer address> */ 122 #define P2P_EVENT_PROV_DISC_ENTER_PIN "P2P-PROV-DISC-ENTER-PIN " 123 /* parameters: <peer address> */ 124 #define P2P_EVENT_PROV_DISC_PBC_REQ "P2P-PROV-DISC-PBC-REQ " 125 /* parameters: <peer address> */ 126 #define P2P_EVENT_PROV_DISC_PBC_RESP "P2P-PROV-DISC-PBC-RESP " 127 /* parameters: <peer address> <status> */ 128 #define P2P_EVENT_PROV_DISC_FAILURE "P2P-PROV-DISC-FAILURE" 129 /* parameters: <freq> <src addr> <dialog token> <update indicator> <TLVs> */ 130 #define P2P_EVENT_SERV_DISC_REQ "P2P-SERV-DISC-REQ " 131 /* parameters: <src addr> <update indicator> <TLVs> */ 132 #define P2P_EVENT_SERV_DISC_RESP "P2P-SERV-DISC-RESP " 133 #define P2P_EVENT_INVITATION_RECEIVED "P2P-INVITATION-RECEIVED " 134 #define P2P_EVENT_INVITATION_RESULT "P2P-INVITATION-RESULT " 135 #define P2P_EVENT_FIND_STOPPED "P2P-FIND-STOPPED " 136 137 #define INTERWORKING_AP "INTERWORKING-AP " 138 #define INTERWORKING_NO_MATCH "INTERWORKING-NO-MATCH " 139 140 #define GAS_RESPONSE_INFO "GAS-RESPONSE-INFO " 141 142 /* hostapd control interface - fixed message prefixes */ 143 #define WPS_EVENT_PIN_NEEDED "WPS-PIN-NEEDED " 144 #define WPS_EVENT_NEW_AP_SETTINGS "WPS-NEW-AP-SETTINGS " 145 #define WPS_EVENT_REG_SUCCESS "WPS-REG-SUCCESS " 146 #define WPS_EVENT_AP_SETUP_LOCKED "WPS-AP-SETUP-LOCKED " 147 #define WPS_EVENT_AP_SETUP_UNLOCKED "WPS-AP-SETUP-UNLOCKED " 148 #define WPS_EVENT_AP_PIN_ENABLED "WPS-AP-PIN-ENABLED " 149 #define WPS_EVENT_AP_PIN_DISABLED "WPS-AP-PIN-DISABLED " 150 #define AP_STA_CONNECTED "AP-STA-CONNECTED " 151 #define AP_STA_DISCONNECTED "AP-STA-DISCONNECTED " 152 153 #define AP_REJECTED_MAX_STA "AP-REJECTED-MAX-STA " 154 #define AP_REJECTED_BLOCKED_STA "AP-REJECTED-BLOCKED-STA " 155 156 /* BSS command information masks */ 157 158 #define WPA_BSS_MASK_ALL 0xFFFDFFFF 159 #define WPA_BSS_MASK_ID BIT(0) 160 #define WPA_BSS_MASK_BSSID BIT(1) 161 #define WPA_BSS_MASK_FREQ BIT(2) 162 #define WPA_BSS_MASK_BEACON_INT BIT(3) 163 #define WPA_BSS_MASK_CAPABILITIES BIT(4) 164 #define WPA_BSS_MASK_QUAL BIT(5) 165 #define WPA_BSS_MASK_NOISE BIT(6) 166 #define WPA_BSS_MASK_LEVEL BIT(7) 167 #define WPA_BSS_MASK_TSF BIT(8) 168 #define WPA_BSS_MASK_AGE BIT(9) 169 #define WPA_BSS_MASK_IE BIT(10) 170 #define WPA_BSS_MASK_FLAGS BIT(11) 171 #define WPA_BSS_MASK_SSID BIT(12) 172 #define WPA_BSS_MASK_WPS_SCAN BIT(13) 173 #define WPA_BSS_MASK_P2P_SCAN BIT(14) 174 #define WPA_BSS_MASK_INTERNETW BIT(15) 175 #define WPA_BSS_MASK_WIFI_DISPLAY BIT(16) 176 #define WPA_BSS_MASK_DELIM BIT(17) 177 178 179 /* wpa_supplicant/hostapd control interface access */ 180 181 /** 182 * wpa_ctrl_open - Open a control interface to wpa_supplicant/hostapd 183 * @ctrl_path: Path for UNIX domain sockets; ignored if UDP sockets are used. 184 * Returns: Pointer to abstract control interface data or %NULL on failure 185 * 186 * This function is used to open a control interface to wpa_supplicant/hostapd. 187 * ctrl_path is usually /var/run/wpa_supplicant or /var/run/hostapd. This path 188 * is configured in wpa_supplicant/hostapd and other programs using the control 189 * interface need to use matching path configuration. 190 */ 191 struct wpa_ctrl * wpa_ctrl_open(const char *ctrl_path); 192 193 194 /** 195 * wpa_ctrl_close - Close a control interface to wpa_supplicant/hostapd 196 * @ctrl: Control interface data from wpa_ctrl_open() 197 * 198 * This function is used to close a control interface. 199 */ 200 void wpa_ctrl_close(struct wpa_ctrl *ctrl); 201 202 203 /** 204 * wpa_ctrl_request - Send a command to wpa_supplicant/hostapd 205 * @ctrl: Control interface data from wpa_ctrl_open() 206 * @cmd: Command; usually, ASCII text, e.g., "PING" 207 * @cmd_len: Length of the cmd in bytes 208 * @reply: Buffer for the response 209 * @reply_len: Reply buffer length 210 * @msg_cb: Callback function for unsolicited messages or %NULL if not used 211 * Returns: 0 on success, -1 on error (send or receive failed), -2 on timeout 212 * 213 * This function is used to send commands to wpa_supplicant/hostapd. Received 214 * response will be written to reply and reply_len is set to the actual length 215 * of the reply. This function will block for up to two seconds while waiting 216 * for the reply. If unsolicited messages are received, the blocking time may 217 * be longer. 218 * 219 * msg_cb can be used to register a callback function that will be called for 220 * unsolicited messages received while waiting for the command response. These 221 * messages may be received if wpa_ctrl_request() is called at the same time as 222 * wpa_supplicant/hostapd is sending such a message. This can happen only if 223 * the program has used wpa_ctrl_attach() to register itself as a monitor for 224 * event messages. Alternatively to msg_cb, programs can register two control 225 * interface connections and use one of them for commands and the other one for 226 * receiving event messages, in other words, call wpa_ctrl_attach() only for 227 * the control interface connection that will be used for event messages. 228 */ 229 int wpa_ctrl_request(struct wpa_ctrl *ctrl, const char *cmd, size_t cmd_len, 230 char *reply, size_t *reply_len, 231 void (*msg_cb)(char *msg, size_t len)); 232 233 234 /** 235 * wpa_ctrl_attach - Register as an event monitor for the control interface 236 * @ctrl: Control interface data from wpa_ctrl_open() 237 * Returns: 0 on success, -1 on failure, -2 on timeout 238 * 239 * This function registers the control interface connection as a monitor for 240 * wpa_supplicant/hostapd events. After a success wpa_ctrl_attach() call, the 241 * control interface connection starts receiving event messages that can be 242 * read with wpa_ctrl_recv(). 243 */ 244 int wpa_ctrl_attach(struct wpa_ctrl *ctrl); 245 246 247 /** 248 * wpa_ctrl_detach - Unregister event monitor from the control interface 249 * @ctrl: Control interface data from wpa_ctrl_open() 250 * Returns: 0 on success, -1 on failure, -2 on timeout 251 * 252 * This function unregisters the control interface connection as a monitor for 253 * wpa_supplicant/hostapd events, i.e., cancels the registration done with 254 * wpa_ctrl_attach(). 255 */ 256 int wpa_ctrl_detach(struct wpa_ctrl *ctrl); 257 258 259 /** 260 * wpa_ctrl_recv - Receive a pending control interface message 261 * @ctrl: Control interface data from wpa_ctrl_open() 262 * @reply: Buffer for the message data 263 * @reply_len: Length of the reply buffer 264 * Returns: 0 on success, -1 on failure 265 * 266 * This function will receive a pending control interface message. This 267 * function will block if no messages are available. The received response will 268 * be written to reply and reply_len is set to the actual length of the reply. 269 * wpa_ctrl_recv() is only used for event messages, i.e., wpa_ctrl_attach() 270 * must have been used to register the control interface as an event monitor. 271 */ 272 int wpa_ctrl_recv(struct wpa_ctrl *ctrl, char *reply, size_t *reply_len); 273 274 275 /** 276 * wpa_ctrl_pending - Check whether there are pending event messages 277 * @ctrl: Control interface data from wpa_ctrl_open() 278 * Returns: 1 if there are pending messages, 0 if no, or -1 on error 279 * 280 * This function will check whether there are any pending control interface 281 * message available to be received with wpa_ctrl_recv(). wpa_ctrl_pending() is 282 * only used for event messages, i.e., wpa_ctrl_attach() must have been used to 283 * register the control interface as an event monitor. 284 */ 285 int wpa_ctrl_pending(struct wpa_ctrl *ctrl); 286 287 288 /** 289 * wpa_ctrl_get_fd - Get file descriptor used by the control interface 290 * @ctrl: Control interface data from wpa_ctrl_open() 291 * Returns: File descriptor used for the connection 292 * 293 * This function can be used to get the file descriptor that is used for the 294 * control interface connection. The returned value can be used, e.g., with 295 * select() while waiting for multiple events. 296 * 297 * The returned file descriptor must not be used directly for sending or 298 * receiving packets; instead, the library functions wpa_ctrl_request() and 299 * wpa_ctrl_recv() must be used for this. 300 */ 301 int wpa_ctrl_get_fd(struct wpa_ctrl *ctrl); 302 303 char * wpa_ctrl_get_remote_ifname(struct wpa_ctrl *ctrl); 304 305 #ifdef ANDROID 306 /** 307 * wpa_ctrl_cleanup() - Delete any local UNIX domain socket files that 308 * may be left over from clients that were previously connected to 309 * wpa_supplicant. This keeps these files from being orphaned in the 310 * event of crashes that prevented them from being removed as part 311 * of the normal orderly shutdown. 312 */ 313 void wpa_ctrl_cleanup(void); 314 #endif /* ANDROID */ 315 316 #ifdef CONFIG_CTRL_IFACE_UDP 317 /* Port range for multiple wpa_supplicant instances and multiple VIFs */ 318 #define WPA_CTRL_IFACE_PORT 9877 319 #define WPA_CTRL_IFACE_PORT_LIMIT 50 /* decremented from start */ 320 #define WPA_GLOBAL_CTRL_IFACE_PORT 9878 321 #define WPA_GLOBAL_CTRL_IFACE_PORT_LIMIT 20 /* incremented from start */ 322 #endif /* CONFIG_CTRL_IFACE_UDP */ 323 324 325 #ifdef __cplusplus 326 } 327 #endif 328 329 #endif /* WPA_CTRL_H */ 330