2 * WPA Supplicant / Configuration file structures
3 * Copyright (c) 2003-2005, 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.
18 #define DEFAULT_EAPOL_VERSION 1
19 #ifdef CONFIG_NO_SCAN_PROCESSING
20 #define DEFAULT_AP_SCAN 2
21 #else /* CONFIG_NO_SCAN_PROCESSING */
22 #define DEFAULT_AP_SCAN 1
23 #endif /* CONFIG_NO_SCAN_PROCESSING */
24 #define DEFAULT_FAST_REAUTH 1
25 #define DEFAULT_P2P_GO_INTENT 7
26 #define DEFAULT_P2P_INTRA_BSS 1
27 #define DEFAULT_BSS_MAX_COUNT 200
28 #define DEFAULT_MAX_NUM_STA 128
30 #include "config_ssid.h"
33 #define CFG_CHANGED_DEVICE_NAME BIT(0)
34 #define CFG_CHANGED_CONFIG_METHODS BIT(1)
35 #define CFG_CHANGED_DEVICE_TYPE BIT(2)
36 #define CFG_CHANGED_OS_VERSION BIT(3)
37 #define CFG_CHANGED_UUID BIT(4)
38 #define CFG_CHANGED_COUNTRY BIT(5)
39 #define CFG_CHANGED_SEC_DEVICE_TYPE BIT(6)
40 #define CFG_CHANGED_P2P_SSID_POSTFIX BIT(7)
41 #define CFG_CHANGED_WPS_STRING BIT(8)
42 #define CFG_CHANGED_P2P_INTRA_BSS BIT(9)
45 * struct wpa_config - wpa_supplicant configuration data
47 * This data structure is presents the per-interface (radio) configuration
48 * data. In many cases, there is only one struct wpa_config instance, but if
49 * more than one network interface is being controlled, one instance is used
54 * ssid - Head of the global network list
56 * This is the head for the list of all the configured networks.
58 struct wpa_ssid *ssid;
61 * pssid - Per-priority network lists (in priority order)
63 struct wpa_ssid **pssid;
66 * num_prio - Number of different priorities used in the pssid lists
68 * This indicates how many per-priority network lists are included in
74 * eapol_version - IEEE 802.1X/EAPOL version number
76 * wpa_supplicant is implemented based on IEEE Std 802.1X-2004 which
77 * defines EAPOL version 2. However, there are many APs that do not
78 * handle the new version number correctly (they seem to drop the
79 * frames completely). In order to make wpa_supplicant interoperate
80 * with these APs, the version number is set to 1 by default. This
81 * configuration value can be used to set it to the new version (2).
86 * ap_scan - AP scanning/selection
88 * By default, wpa_supplicant requests driver to perform AP
89 * scanning and then uses the scan results to select a
90 * suitable AP. Another alternative is to allow the driver to
91 * take care of AP scanning and selection and use
92 * wpa_supplicant just to process EAPOL frames based on IEEE
93 * 802.11 association information from the driver.
95 * 1: wpa_supplicant initiates scanning and AP selection (default).
97 * 0: Driver takes care of scanning, AP selection, and IEEE 802.11
98 * association parameters (e.g., WPA IE generation); this mode can
99 * also be used with non-WPA drivers when using IEEE 802.1X mode;
100 * do not try to associate with APs (i.e., external program needs
101 * to control association). This mode must also be used when using
102 * wired Ethernet drivers.
104 * 2: like 0, but associate with APs using security policy and SSID
105 * (but not BSSID); this can be used, e.g., with ndiswrapper and NDIS
106 * drivers to enable operation with hidden SSIDs and optimized roaming;
107 * in this mode, the network blocks in the configuration are tried
108 * one by one until the driver reports successful association; each
109 * network block should have explicit security policy (i.e., only one
110 * option in the lists) for key_mgmt, pairwise, group, proto variables.
115 * ctrl_interface - Parameters for the control interface
117 * If this is specified, %wpa_supplicant will open a control interface
118 * that is available for external programs to manage %wpa_supplicant.
119 * The meaning of this string depends on which control interface
120 * mechanism is used. For all cases, the existance of this parameter
121 * in configuration is used to determine whether the control interface
124 * For UNIX domain sockets (default on Linux and BSD): This is a
125 * directory that will be created for UNIX domain sockets for listening
126 * to requests from external programs (CLI/GUI, etc.) for status
127 * information and configuration. The socket file will be named based
128 * on the interface name, so multiple %wpa_supplicant processes can be
129 * run at the same time if more than one interface is used.
130 * /var/run/wpa_supplicant is the recommended directory for sockets and
131 * by default, wpa_cli will use it when trying to connect with
134 * Access control for the control interface can be configured
135 * by setting the directory to allow only members of a group
136 * to use sockets. This way, it is possible to run
137 * %wpa_supplicant as root (since it needs to change network
138 * configuration and open raw sockets) and still allow GUI/CLI
139 * components to be run as non-root users. However, since the
140 * control interface can be used to change the network
141 * configuration, this access needs to be protected in many
142 * cases. By default, %wpa_supplicant is configured to use gid
143 * 0 (root). If you want to allow non-root users to use the
144 * control interface, add a new group and change this value to
145 * match with that group. Add users that should have control
146 * interface access to this group.
148 * When configuring both the directory and group, use following format:
149 * DIR=/var/run/wpa_supplicant GROUP=wheel
150 * DIR=/var/run/wpa_supplicant GROUP=0
151 * (group can be either group name or gid)
153 * For UDP connections (default on Windows): The value will be ignored.
154 * This variable is just used to select that the control interface is
155 * to be created. The value can be set to, e.g., udp
156 * (ctrl_interface=udp).
158 * For Windows Named Pipe: This value can be used to set the security
159 * descriptor for controlling access to the control interface. Security
160 * descriptor can be set using Security Descriptor String Format (see
161 * http://msdn.microsoft.com/library/default.asp?url=/library/en-us/secauthz/security/security_descriptor_string_format.asp).
162 * The descriptor string needs to be prefixed with SDDL=. For example,
163 * ctrl_interface=SDDL=D: would set an empty DACL (which will reject
166 char *ctrl_interface;
169 * ctrl_interface_group - Control interface group (DEPRECATED)
171 * This variable is only used for backwards compatibility. Group for
172 * UNIX domain sockets should now be specified using GROUP=group in
173 * ctrl_interface variable.
175 char *ctrl_interface_group;
178 * fast_reauth - EAP fast re-authentication (session resumption)
180 * By default, fast re-authentication is enabled for all EAP methods
181 * that support it. This variable can be used to disable fast
182 * re-authentication (by setting fast_reauth=0). Normally, there is no
183 * need to disable fast re-authentication.
188 * opensc_engine_path - Path to the OpenSSL engine for opensc
190 * This is an OpenSSL specific configuration option for loading OpenSC
191 * engine (engine_opensc.so); if %NULL, this engine is not loaded.
193 char *opensc_engine_path;
196 * pkcs11_engine_path - Path to the OpenSSL engine for PKCS#11
198 * This is an OpenSSL specific configuration option for loading PKCS#11
199 * engine (engine_pkcs11.so); if %NULL, this engine is not loaded.
201 char *pkcs11_engine_path;
204 * pkcs11_module_path - Path to the OpenSSL OpenSC/PKCS#11 module
206 * This is an OpenSSL specific configuration option for configuring
207 * path to OpenSC/PKCS#11 engine (opensc-pkcs11.so); if %NULL, this
208 * module is not loaded.
210 char *pkcs11_module_path;
213 * driver_param - Driver interface parameters
215 * This text string is passed to the selected driver interface with the
216 * optional struct wpa_driver_ops::set_param() handler. This can be
217 * used to configure driver specific options without having to add new
218 * driver interface functionality.
223 * dot11RSNAConfigPMKLifetime - Maximum lifetime of a PMK
225 * dot11 MIB variable for the maximum lifetime of a PMK in the PMK
226 * cache (unit: seconds).
228 unsigned int dot11RSNAConfigPMKLifetime;
231 * dot11RSNAConfigPMKReauthThreshold - PMK re-authentication threshold
233 * dot11 MIB variable for the percentage of the PMK lifetime
234 * that should expire before an IEEE 802.1X reauthentication occurs.
236 unsigned int dot11RSNAConfigPMKReauthThreshold;
239 * dot11RSNAConfigSATimeout - Security association timeout
241 * dot11 MIB variable for the maximum time a security association
242 * shall take to set up (unit: seconds).
244 unsigned int dot11RSNAConfigSATimeout;
247 * update_config - Is wpa_supplicant allowed to update configuration
249 * This variable control whether wpa_supplicant is allow to re-write
250 * its configuration with wpa_config_write(). If this is zero,
251 * configuration data is only changed in memory and the external data
252 * is not overriden. If this is non-zero, wpa_supplicant will update
253 * the configuration data (e.g., a file) whenever configuration is
254 * changed. This update may replace the old configuration which can
255 * remove comments from it in case of a text file configuration.
260 * blobs - Configuration blobs
262 struct wpa_config_blob *blobs;
265 * uuid - Universally Unique IDentifier (UUID; see RFC 4122) for WPS
270 * device_name - Device Name (WPS)
271 * User-friendly description of device; up to 32 octets encoded in
277 * manufacturer - Manufacturer (WPS)
278 * The manufacturer of the device (up to 64 ASCII characters)
283 * model_name - Model Name (WPS)
284 * Model of the device (up to 32 ASCII characters)
289 * model_number - Model Number (WPS)
290 * Additional device description (up to 32 ASCII characters)
295 * serial_number - Serial Number (WPS)
296 * Serial number of the device (up to 32 characters)
301 * device_type - Primary Device Type (WPS)
302 * Used format: categ-OUI-subcateg
303 * categ = Category as an integer value
304 * OUI = OUI and type octet as a 4-octet hex-encoded value;
305 * 0050F204 for default WPS OUI
306 * subcateg = OUI-specific Sub Category as an integer value
308 * 1-0050F204-1 (Computer / PC)
309 * 1-0050F204-2 (Computer / Server)
310 * 5-0050F204-1 (Storage / NAS)
311 * 6-0050F204-1 (Network Infrastructure / AP)
316 * config_methods - Config Methods
318 * This is a space-separated list of supported WPS configuration
319 * methods. For example, "label virtual_display virtual_push_button
321 * Available methods: usba ethernet label display ext_nfc_token
322 * int_nfc_token nfc_interface push_button keypad
323 * virtual_display physical_display
324 * virtual_push_button physical_push_button.
326 char *config_methods;
329 * os_version - OS Version (WPS)
330 * 4-octet operating system version number
335 * country - Country code
337 * This is the ISO/IEC alpha2 country code for which we are operating
343 * wps_cred_processing - Credential processing
345 * 0 = process received credentials internally
346 * 1 = do not process received credentials; just pass them over
347 * ctrl_iface to external program(s)
348 * 2 = process received credentials internally and pass them over
349 * ctrl_iface to external program(s)
351 int wps_cred_processing;
353 #define MAX_SEC_DEVICE_TYPES 5
355 * sec_device_type - Secondary Device Types (P2P)
356 * See device_type for the format used with these.
358 char *sec_device_type[MAX_SEC_DEVICE_TYPES];
360 int p2p_listen_reg_class;
361 int p2p_listen_channel;
362 int p2p_oper_reg_class;
363 int p2p_oper_channel;
365 char *p2p_ssid_postfix;
366 int persistent_reconnect;
370 * p2p_group_idle - Maximum idle time in seconds for P2P group
372 * This value controls how long a P2P group is maintained after there
373 * is no other members in the group. As a GO, this means no associated
374 * stations in the group. As a P2P client, this means no GO seen in
375 * scan results. The maximum idle time is specified in seconds with 0
376 * indicating no time limit, i.e., the P2P group remains in active
377 * state indefinitely until explicitly removed.
379 unsigned int p2p_group_idle;
382 * bss_max_count - Maximum number of BSS entries to keep in memory
384 unsigned int bss_max_count;
387 * filter_ssids - SSID-based scan result filtering
389 * 0 = do not filter scan results
390 * 1 = only include configured SSIDs in scan results/BSS table
395 * max_num_sta - Maximum number of STAs in an AP/P2P GO
397 unsigned int max_num_sta;
400 * changed_parameters - Bitmap of changed parameters since last update
402 unsigned int changed_parameters;
405 * disassoc_low_ack - disassocenticate stations with massive packet loss
407 int disassoc_low_ack;
411 /* Prototypes for common functions from config.c */
413 void wpa_config_free(struct wpa_config *ssid);
414 void wpa_config_free_ssid(struct wpa_ssid *ssid);
415 struct wpa_ssid * wpa_config_get_network(struct wpa_config *config, int id);
416 struct wpa_ssid * wpa_config_add_network(struct wpa_config *config);
417 int wpa_config_remove_network(struct wpa_config *config, int id);
418 void wpa_config_set_network_defaults(struct wpa_ssid *ssid);
419 int wpa_config_set(struct wpa_ssid *ssid, const char *var, const char *value,
421 char ** wpa_config_get_all(struct wpa_ssid *ssid, int get_keys);
422 char * wpa_config_get(struct wpa_ssid *ssid, const char *var);
423 char * wpa_config_get_no_key(struct wpa_ssid *ssid, const char *var);
424 void wpa_config_update_psk(struct wpa_ssid *ssid);
425 int wpa_config_add_prio_network(struct wpa_config *config,
426 struct wpa_ssid *ssid);
427 int wpa_config_update_prio_list(struct wpa_config *config);
428 const struct wpa_config_blob * wpa_config_get_blob(struct wpa_config *config,
430 void wpa_config_set_blob(struct wpa_config *config,
431 struct wpa_config_blob *blob);
432 void wpa_config_free_blob(struct wpa_config_blob *blob);
433 int wpa_config_remove_blob(struct wpa_config *config, const char *name);
435 struct wpa_config * wpa_config_alloc_empty(const char *ctrl_interface,
436 const char *driver_param);
437 #ifndef CONFIG_NO_STDOUT_DEBUG
438 void wpa_config_debug_dump_networks(struct wpa_config *config);
439 #else /* CONFIG_NO_STDOUT_DEBUG */
440 #define wpa_config_debug_dump_networks(c) do { } while (0)
441 #endif /* CONFIG_NO_STDOUT_DEBUG */
444 /* Prototypes for common functions from config.c */
445 int wpa_config_process_global(struct wpa_config *config, char *pos, int line);
448 /* Prototypes for backend specific functions from the selected config_*.c */
451 * wpa_config_read - Read and parse configuration database
452 * @name: Name of the configuration (e.g., path and file name for the
453 * configuration file)
454 * Returns: Pointer to allocated configuration data or %NULL on failure
456 * This function reads configuration data, parses its contents, and allocates
457 * data structures needed for storing configuration information. The allocated
458 * data can be freed with wpa_config_free().
460 * Each configuration backend needs to implement this function.
462 struct wpa_config * wpa_config_read(const char *name);
465 * wpa_config_write - Write or update configuration data
466 * @name: Name of the configuration (e.g., path and file name for the
467 * configuration file)
468 * @config: Configuration data from wpa_config_read()
469 * Returns: 0 on success, -1 on failure
471 * This function write all configuration data into an external database (e.g.,
472 * a text file) in a format that can be read with wpa_config_read(). This can
473 * be used to allow wpa_supplicant to update its configuration, e.g., when a
474 * new network is added or a password is changed.
476 * Each configuration backend needs to implement this function.
478 int wpa_config_write(const char *name, struct wpa_config *config);
480 #endif /* CONFIG_H */