2 * WPA Supplicant / Configuration file structures
3 * Copyright (c) 2003-2012, Jouni Malinen <j@w1.fi>
5 * This software may be distributed under the terms of the BSD license.
6 * See README for more details.
12 #define DEFAULT_EAPOL_VERSION 1
13 #ifdef CONFIG_NO_SCAN_PROCESSING
14 #define DEFAULT_AP_SCAN 2
15 #else /* CONFIG_NO_SCAN_PROCESSING */
16 #define DEFAULT_AP_SCAN 1
17 #endif /* CONFIG_NO_SCAN_PROCESSING */
18 #define DEFAULT_FAST_REAUTH 1
19 #define DEFAULT_P2P_GO_INTENT 7
20 #define DEFAULT_P2P_INTRA_BSS 1
21 #define DEFAULT_BSS_MAX_COUNT 200
22 #define DEFAULT_BSS_EXPIRATION_AGE 180
23 #define DEFAULT_BSS_EXPIRATION_SCAN_COUNT 2
24 #define DEFAULT_MAX_NUM_STA 128
25 #define DEFAULT_ACCESS_NETWORK_TYPE 15
27 #include "config_ssid.h"
33 * next - Next credential in the list
35 * This pointer can be used to iterate over all credentials. The head
36 * of this list is stored in the cred field of struct wpa_config.
38 struct wpa_cred *next;
41 * id - Unique id for the credential
43 * This identifier is used as a unique identifier for each credential
44 * block when using the control interface. Each credential is allocated
45 * an id when it is being created, either when reading the
46 * configuration file or when a new credential is added through the
52 * priority - Priority group
54 * By default, all networks and credentials get the same priority group
55 * (0). This field can be used to give higher priority for credentials
56 * (and similarly in struct wpa_ssid for network blocks) to change the
57 * Interworking automatic networking selection behavior. The matching
58 * network (based on either an enabled network block or a credential)
59 * with the highest priority value will be selected.
64 * realm - Home Realm for Interworking
69 * username - Username for Interworking network selection
74 * password - Password for Interworking network selection
79 * ca_cert - CA certificate for Interworking network selection
84 * imsi - IMSI in <MCC> | <MNC> | '-' | <MSIN> format
89 * milenage - Milenage parameters for SIM/USIM simulator in
90 * <Ki>:<OPc>:<SQN> format
95 * domain - Home service provider FQDN
97 * This is used to compare against the Domain Name List to figure out
98 * whether the AP is operated by the Home SP.
104 #define CFG_CHANGED_DEVICE_NAME BIT(0)
105 #define CFG_CHANGED_CONFIG_METHODS BIT(1)
106 #define CFG_CHANGED_DEVICE_TYPE BIT(2)
107 #define CFG_CHANGED_OS_VERSION BIT(3)
108 #define CFG_CHANGED_UUID BIT(4)
109 #define CFG_CHANGED_COUNTRY BIT(5)
110 #define CFG_CHANGED_SEC_DEVICE_TYPE BIT(6)
111 #define CFG_CHANGED_P2P_SSID_POSTFIX BIT(7)
112 #define CFG_CHANGED_WPS_STRING BIT(8)
113 #define CFG_CHANGED_P2P_INTRA_BSS BIT(9)
114 #define CFG_CHANGED_VENDOR_EXTENSION BIT(10)
115 #define CFG_CHANGED_P2P_LISTEN_CHANNEL BIT(11)
116 #define CFG_CHANGED_P2P_OPER_CHANNEL BIT(12)
119 * struct wpa_config - wpa_supplicant configuration data
121 * This data structure is presents the per-interface (radio) configuration
122 * data. In many cases, there is only one struct wpa_config instance, but if
123 * more than one network interface is being controlled, one instance is used
128 * ssid - Head of the global network list
130 * This is the head for the list of all the configured networks.
132 struct wpa_ssid *ssid;
135 * pssid - Per-priority network lists (in priority order)
137 struct wpa_ssid **pssid;
140 * num_prio - Number of different priorities used in the pssid lists
142 * This indicates how many per-priority network lists are included in
148 * cred - Head of the credential list
150 * This is the head for the list of all the configured credentials.
152 struct wpa_cred *cred;
155 * eapol_version - IEEE 802.1X/EAPOL version number
157 * wpa_supplicant is implemented based on IEEE Std 802.1X-2004 which
158 * defines EAPOL version 2. However, there are many APs that do not
159 * handle the new version number correctly (they seem to drop the
160 * frames completely). In order to make wpa_supplicant interoperate
161 * with these APs, the version number is set to 1 by default. This
162 * configuration value can be used to set it to the new version (2).
167 * ap_scan - AP scanning/selection
169 * By default, wpa_supplicant requests driver to perform AP
170 * scanning and then uses the scan results to select a
171 * suitable AP. Another alternative is to allow the driver to
172 * take care of AP scanning and selection and use
173 * wpa_supplicant just to process EAPOL frames based on IEEE
174 * 802.11 association information from the driver.
176 * 1: wpa_supplicant initiates scanning and AP selection (default).
178 * 0: Driver takes care of scanning, AP selection, and IEEE 802.11
179 * association parameters (e.g., WPA IE generation); this mode can
180 * also be used with non-WPA drivers when using IEEE 802.1X mode;
181 * do not try to associate with APs (i.e., external program needs
182 * to control association). This mode must also be used when using
183 * wired Ethernet drivers.
185 * 2: like 0, but associate with APs using security policy and SSID
186 * (but not BSSID); this can be used, e.g., with ndiswrapper and NDIS
187 * drivers to enable operation with hidden SSIDs and optimized roaming;
188 * in this mode, the network blocks in the configuration are tried
189 * one by one until the driver reports successful association; each
190 * network block should have explicit security policy (i.e., only one
191 * option in the lists) for key_mgmt, pairwise, group, proto variables.
196 * ctrl_interface - Parameters for the control interface
198 * If this is specified, %wpa_supplicant will open a control interface
199 * that is available for external programs to manage %wpa_supplicant.
200 * The meaning of this string depends on which control interface
201 * mechanism is used. For all cases, the existence of this parameter
202 * in configuration is used to determine whether the control interface
205 * For UNIX domain sockets (default on Linux and BSD): This is a
206 * directory that will be created for UNIX domain sockets for listening
207 * to requests from external programs (CLI/GUI, etc.) for status
208 * information and configuration. The socket file will be named based
209 * on the interface name, so multiple %wpa_supplicant processes can be
210 * run at the same time if more than one interface is used.
211 * /var/run/wpa_supplicant is the recommended directory for sockets and
212 * by default, wpa_cli will use it when trying to connect with
215 * Access control for the control interface can be configured
216 * by setting the directory to allow only members of a group
217 * to use sockets. This way, it is possible to run
218 * %wpa_supplicant as root (since it needs to change network
219 * configuration and open raw sockets) and still allow GUI/CLI
220 * components to be run as non-root users. However, since the
221 * control interface can be used to change the network
222 * configuration, this access needs to be protected in many
223 * cases. By default, %wpa_supplicant is configured to use gid
224 * 0 (root). If you want to allow non-root users to use the
225 * control interface, add a new group and change this value to
226 * match with that group. Add users that should have control
227 * interface access to this group.
229 * When configuring both the directory and group, use following format:
230 * DIR=/var/run/wpa_supplicant GROUP=wheel
231 * DIR=/var/run/wpa_supplicant GROUP=0
232 * (group can be either group name or gid)
234 * For UDP connections (default on Windows): The value will be ignored.
235 * This variable is just used to select that the control interface is
236 * to be created. The value can be set to, e.g., udp
237 * (ctrl_interface=udp).
239 * For Windows Named Pipe: This value can be used to set the security
240 * descriptor for controlling access to the control interface. Security
241 * descriptor can be set using Security Descriptor String Format (see
242 * http://msdn.microsoft.com/library/default.asp?url=/library/en-us/secauthz/security/security_descriptor_string_format.asp).
243 * The descriptor string needs to be prefixed with SDDL=. For example,
244 * ctrl_interface=SDDL=D: would set an empty DACL (which will reject
247 char *ctrl_interface;
250 * ctrl_interface_group - Control interface group (DEPRECATED)
252 * This variable is only used for backwards compatibility. Group for
253 * UNIX domain sockets should now be specified using GROUP=group in
254 * ctrl_interface variable.
256 char *ctrl_interface_group;
259 * fast_reauth - EAP fast re-authentication (session resumption)
261 * By default, fast re-authentication is enabled for all EAP methods
262 * that support it. This variable can be used to disable fast
263 * re-authentication (by setting fast_reauth=0). Normally, there is no
264 * need to disable fast re-authentication.
269 * opensc_engine_path - Path to the OpenSSL engine for opensc
271 * This is an OpenSSL specific configuration option for loading OpenSC
272 * engine (engine_opensc.so); if %NULL, this engine is not loaded.
274 char *opensc_engine_path;
277 * pkcs11_engine_path - Path to the OpenSSL engine for PKCS#11
279 * This is an OpenSSL specific configuration option for loading PKCS#11
280 * engine (engine_pkcs11.so); if %NULL, this engine is not loaded.
282 char *pkcs11_engine_path;
285 * pkcs11_module_path - Path to the OpenSSL OpenSC/PKCS#11 module
287 * This is an OpenSSL specific configuration option for configuring
288 * path to OpenSC/PKCS#11 engine (opensc-pkcs11.so); if %NULL, this
289 * module is not loaded.
291 char *pkcs11_module_path;
294 * pcsc_reader - PC/SC reader name prefix
296 * If not %NULL, PC/SC reader with a name that matches this prefix is
297 * initialized for SIM/USIM access. Empty string can be used to match
298 * the first available reader.
303 * pcsc_pin - PIN for USIM, GSM SIM, and smartcards
305 * This field is used to configure PIN for SIM/USIM for EAP-SIM and
306 * EAP-AKA. If left out, this will be asked through control interface.
311 * driver_param - Driver interface parameters
313 * This text string is passed to the selected driver interface with the
314 * optional struct wpa_driver_ops::set_param() handler. This can be
315 * used to configure driver specific options without having to add new
316 * driver interface functionality.
321 * dot11RSNAConfigPMKLifetime - Maximum lifetime of a PMK
323 * dot11 MIB variable for the maximum lifetime of a PMK in the PMK
324 * cache (unit: seconds).
326 unsigned int dot11RSNAConfigPMKLifetime;
329 * dot11RSNAConfigPMKReauthThreshold - PMK re-authentication threshold
331 * dot11 MIB variable for the percentage of the PMK lifetime
332 * that should expire before an IEEE 802.1X reauthentication occurs.
334 unsigned int dot11RSNAConfigPMKReauthThreshold;
337 * dot11RSNAConfigSATimeout - Security association timeout
339 * dot11 MIB variable for the maximum time a security association
340 * shall take to set up (unit: seconds).
342 unsigned int dot11RSNAConfigSATimeout;
345 * update_config - Is wpa_supplicant allowed to update configuration
347 * This variable control whether wpa_supplicant is allow to re-write
348 * its configuration with wpa_config_write(). If this is zero,
349 * configuration data is only changed in memory and the external data
350 * is not overriden. If this is non-zero, wpa_supplicant will update
351 * the configuration data (e.g., a file) whenever configuration is
352 * changed. This update may replace the old configuration which can
353 * remove comments from it in case of a text file configuration.
358 * blobs - Configuration blobs
360 struct wpa_config_blob *blobs;
363 * uuid - Universally Unique IDentifier (UUID; see RFC 4122) for WPS
368 * device_name - Device Name (WPS)
369 * User-friendly description of device; up to 32 octets encoded in
375 * manufacturer - Manufacturer (WPS)
376 * The manufacturer of the device (up to 64 ASCII characters)
381 * model_name - Model Name (WPS)
382 * Model of the device (up to 32 ASCII characters)
387 * model_number - Model Number (WPS)
388 * Additional device description (up to 32 ASCII characters)
393 * serial_number - Serial Number (WPS)
394 * Serial number of the device (up to 32 characters)
399 * device_type - Primary Device Type (WPS)
401 u8 device_type[WPS_DEV_TYPE_LEN];
404 * config_methods - Config Methods
406 * This is a space-separated list of supported WPS configuration
407 * methods. For example, "label virtual_display virtual_push_button
409 * Available methods: usba ethernet label display ext_nfc_token
410 * int_nfc_token nfc_interface push_button keypad
411 * virtual_display physical_display
412 * virtual_push_button physical_push_button.
414 char *config_methods;
417 * os_version - OS Version (WPS)
418 * 4-octet operating system version number
423 * country - Country code
425 * This is the ISO/IEC alpha2 country code for which we are operating
431 * wps_cred_processing - Credential processing
433 * 0 = process received credentials internally
434 * 1 = do not process received credentials; just pass them over
435 * ctrl_iface to external program(s)
436 * 2 = process received credentials internally and pass them over
437 * ctrl_iface to external program(s)
439 int wps_cred_processing;
441 #define MAX_SEC_DEVICE_TYPES 5
443 * sec_device_types - Secondary Device Types (P2P)
445 u8 sec_device_type[MAX_SEC_DEVICE_TYPES][WPS_DEV_TYPE_LEN];
446 int num_sec_device_types;
448 int p2p_listen_reg_class;
449 int p2p_listen_channel;
450 int p2p_oper_reg_class;
451 int p2p_oper_channel;
453 char *p2p_ssid_postfix;
454 int persistent_reconnect;
457 #define MAX_WPS_VENDOR_EXT 10
459 * wps_vendor_ext - Vendor extension attributes in WPS
461 struct wpabuf *wps_vendor_ext[MAX_WPS_VENDOR_EXT];
464 * p2p_group_idle - Maximum idle time in seconds for P2P group
466 * This value controls how long a P2P group is maintained after there
467 * is no other members in the group. As a GO, this means no associated
468 * stations in the group. As a P2P client, this means no GO seen in
469 * scan results. The maximum idle time is specified in seconds with 0
470 * indicating no time limit, i.e., the P2P group remains in active
471 * state indefinitely until explicitly removed. As a P2P client, the
472 * maximum idle time of P2P_MAX_CLIENT_IDLE seconds is enforced, i.e.,
473 * this parameter is mainly meant for GO use and for P2P client, it can
474 * only be used to reduce the default timeout to smaller value.
476 unsigned int p2p_group_idle;
479 * bss_max_count - Maximum number of BSS entries to keep in memory
481 unsigned int bss_max_count;
484 * bss_expiration_age - BSS entry age after which it can be expired
486 * This value controls the time in seconds after which a BSS entry
487 * gets removed if it has not been updated or is not in use.
489 unsigned int bss_expiration_age;
492 * bss_expiration_scan_count - Expire BSS after number of scans
494 * If the BSS entry has not been seen in this many scans, it will be
495 * removed. A value of 1 means that entry is removed after the first
496 * scan in which the BSSID is not seen. Larger values can be used
497 * to avoid BSS entries disappearing if they are not visible in
498 * every scan (e.g., low signal quality or interference).
500 unsigned int bss_expiration_scan_count;
503 * filter_ssids - SSID-based scan result filtering
505 * 0 = do not filter scan results
506 * 1 = only include configured SSIDs in scan results/BSS table
511 * max_num_sta - Maximum number of STAs in an AP/P2P GO
513 unsigned int max_num_sta;
516 * changed_parameters - Bitmap of changed parameters since last update
518 unsigned int changed_parameters;
521 * disassoc_low_ack - Disassocicate stations with massive packet loss
523 int disassoc_low_ack;
526 * interworking - Whether Interworking (IEEE 802.11u) is enabled
531 * access_network_type - Access Network Type
533 * When Interworking is enabled, scans will be limited to APs that
534 * advertise the specified Access Network Type (0..15; with 15
535 * indicating wildcard match).
537 int access_network_type;
540 * hessid - Homogenous ESS identifier
542 * If this is set (any octet is non-zero), scans will be used to
543 * request response only from BSSes belonging to the specified
544 * Homogeneous ESS. This is used only if interworking is enabled.
550 /* Prototypes for common functions from config.c */
552 void wpa_config_free(struct wpa_config *ssid);
553 void wpa_config_free_ssid(struct wpa_ssid *ssid);
554 void wpa_config_foreach_network(struct wpa_config *config,
555 void (*func)(void *, struct wpa_ssid *),
557 struct wpa_ssid * wpa_config_get_network(struct wpa_config *config, int id);
558 struct wpa_ssid * wpa_config_add_network(struct wpa_config *config);
559 int wpa_config_remove_network(struct wpa_config *config, int id);
560 void wpa_config_set_network_defaults(struct wpa_ssid *ssid);
561 int wpa_config_set(struct wpa_ssid *ssid, const char *var, const char *value,
563 int wpa_config_set_quoted(struct wpa_ssid *ssid, const char *var,
565 char ** wpa_config_get_all(struct wpa_ssid *ssid, int get_keys);
566 char * wpa_config_get(struct wpa_ssid *ssid, const char *var);
567 char * wpa_config_get_no_key(struct wpa_ssid *ssid, const char *var);
568 void wpa_config_update_psk(struct wpa_ssid *ssid);
569 int wpa_config_add_prio_network(struct wpa_config *config,
570 struct wpa_ssid *ssid);
571 int wpa_config_update_prio_list(struct wpa_config *config);
572 const struct wpa_config_blob * wpa_config_get_blob(struct wpa_config *config,
574 void wpa_config_set_blob(struct wpa_config *config,
575 struct wpa_config_blob *blob);
576 void wpa_config_free_blob(struct wpa_config_blob *blob);
577 int wpa_config_remove_blob(struct wpa_config *config, const char *name);
579 struct wpa_cred * wpa_config_get_cred(struct wpa_config *config, int id);
580 struct wpa_cred * wpa_config_add_cred(struct wpa_config *config);
581 int wpa_config_remove_cred(struct wpa_config *config, int id);
582 void wpa_config_free_cred(struct wpa_cred *cred);
583 int wpa_config_set_cred(struct wpa_cred *cred, const char *var,
584 const char *value, int line);
586 struct wpa_config * wpa_config_alloc_empty(const char *ctrl_interface,
587 const char *driver_param);
588 #ifndef CONFIG_NO_STDOUT_DEBUG
589 void wpa_config_debug_dump_networks(struct wpa_config *config);
590 #else /* CONFIG_NO_STDOUT_DEBUG */
591 #define wpa_config_debug_dump_networks(c) do { } while (0)
592 #endif /* CONFIG_NO_STDOUT_DEBUG */
595 /* Prototypes for common functions from config.c */
596 int wpa_config_process_global(struct wpa_config *config, char *pos, int line);
599 /* Prototypes for backend specific functions from the selected config_*.c */
602 * wpa_config_read - Read and parse configuration database
603 * @name: Name of the configuration (e.g., path and file name for the
604 * configuration file)
605 * Returns: Pointer to allocated configuration data or %NULL on failure
607 * This function reads configuration data, parses its contents, and allocates
608 * data structures needed for storing configuration information. The allocated
609 * data can be freed with wpa_config_free().
611 * Each configuration backend needs to implement this function.
613 struct wpa_config * wpa_config_read(const char *name);
616 * wpa_config_write - Write or update configuration data
617 * @name: Name of the configuration (e.g., path and file name for the
618 * configuration file)
619 * @config: Configuration data from wpa_config_read()
620 * Returns: 0 on success, -1 on failure
622 * This function write all configuration data into an external database (e.g.,
623 * a text file) in a format that can be read with wpa_config_read(). This can
624 * be used to allow wpa_supplicant to update its configuration, e.g., when a
625 * new network is added or a password is changed.
627 * Each configuration backend needs to implement this function.
629 int wpa_config_write(const char *name, struct wpa_config *config);
631 #endif /* CONFIG_H */