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_P2P_GO_MAX_INACTIVITY (5 * 60)
22 #define DEFAULT_BSS_MAX_COUNT 200
23 #define DEFAULT_BSS_EXPIRATION_AGE 180
24 #define DEFAULT_BSS_EXPIRATION_SCAN_COUNT 2
25 #define DEFAULT_MAX_NUM_STA 128
26 #define DEFAULT_ACCESS_NETWORK_TYPE 15
28 #include "config_ssid.h"
30 #include "common/ieee802_11_common.h"
35 * next - Next credential in the list
37 * This pointer can be used to iterate over all credentials. The head
38 * of this list is stored in the cred field of struct wpa_config.
40 struct wpa_cred *next;
43 * id - Unique id for the credential
45 * This identifier is used as a unique identifier for each credential
46 * block when using the control interface. Each credential is allocated
47 * an id when it is being created, either when reading the
48 * configuration file or when a new credential is added through the
54 * priority - Priority group
56 * By default, all networks and credentials get the same priority group
57 * (0). This field can be used to give higher priority for credentials
58 * (and similarly in struct wpa_ssid for network blocks) to change the
59 * Interworking automatic networking selection behavior. The matching
60 * network (based on either an enabled network block or a credential)
61 * with the highest priority value will be selected.
66 * pcsc - Use PC/SC and SIM/USIM card
71 * realm - Home Realm for Interworking
76 * username - Username for Interworking network selection
81 * password - Password for Interworking network selection
86 * ext_password - Whether password is a name for external storage
91 * ca_cert - CA certificate for Interworking network selection
96 * client_cert - File path to client certificate file (PEM/DER)
98 * This field is used with Interworking networking selection for a case
99 * where client certificate/private key is used for authentication
100 * (EAP-TLS). Full path to the file should be used since working
101 * directory may change when wpa_supplicant is run in the background.
103 * Alternatively, a named configuration blob can be used by setting
104 * this to blob://blob_name.
109 * private_key - File path to client private key file (PEM/DER/PFX)
111 * When PKCS#12/PFX file (.p12/.pfx) is used, client_cert should be
112 * commented out. Both the private key and certificate will be read
113 * from the PKCS#12 file in this case. Full path to the file should be
114 * used since working directory may change when wpa_supplicant is run
117 * Windows certificate store can be used by leaving client_cert out and
118 * configuring private_key in one of the following formats:
120 * cert://substring_to_match
122 * hash://certificate_thumbprint_in_hex
124 * For example: private_key="hash://63093aa9c47f56ae88334c7b65a4"
126 * Note that when running wpa_supplicant as an application, the user
127 * certificate store (My user account) is used, whereas computer store
128 * (Computer account) is used when running wpasvc as a service.
130 * Alternatively, a named configuration blob can be used by setting
131 * this to blob://blob_name.
136 * private_key_passwd - Password for private key file
138 char *private_key_passwd;
141 * imsi - IMSI in <MCC> | <MNC> | '-' | <MSIN> format
146 * milenage - Milenage parameters for SIM/USIM simulator in
147 * <Ki>:<OPc>:<SQN> format
152 * domain - Home service provider FQDN
154 * This is used to compare against the Domain Name List to figure out
155 * whether the AP is operated by the Home SP.
160 * roaming_consortium - Roaming Consortium OI
162 * If roaming_consortium_len is non-zero, this field contains the
163 * Roaming Consortium OI that can be used to determine which access
164 * points support authentication with this credential. This is an
165 * alternative to the use of the realm parameter. When using Roaming
166 * Consortium to match the network, the EAP parameters need to be
167 * pre-configured with the credential since the NAI Realm information
168 * may not be available or fetched.
170 u8 roaming_consortium[15];
173 * roaming_consortium_len - Length of roaming_consortium
175 size_t roaming_consortium_len;
178 * eap_method - EAP method to use
180 * Pre-configured EAP method to use with this credential or %NULL to
181 * indicate no EAP method is selected, i.e., the method will be
182 * selected automatically based on ANQP information.
184 struct eap_method_type *eap_method;
187 * phase1 - Phase 1 (outer authentication) parameters
189 * Pre-configured EAP parameters or %NULL.
194 * phase2 - Phase 2 (inner authentication) parameters
196 * Pre-configured EAP parameters or %NULL.
200 struct excluded_ssid {
201 u8 ssid[MAX_SSID_LEN];
204 size_t num_excluded_ssid;
208 #define CFG_CHANGED_DEVICE_NAME BIT(0)
209 #define CFG_CHANGED_CONFIG_METHODS BIT(1)
210 #define CFG_CHANGED_DEVICE_TYPE BIT(2)
211 #define CFG_CHANGED_OS_VERSION BIT(3)
212 #define CFG_CHANGED_UUID BIT(4)
213 #define CFG_CHANGED_COUNTRY BIT(5)
214 #define CFG_CHANGED_SEC_DEVICE_TYPE BIT(6)
215 #define CFG_CHANGED_P2P_SSID_POSTFIX BIT(7)
216 #define CFG_CHANGED_WPS_STRING BIT(8)
217 #define CFG_CHANGED_P2P_INTRA_BSS BIT(9)
218 #define CFG_CHANGED_VENDOR_EXTENSION BIT(10)
219 #define CFG_CHANGED_P2P_LISTEN_CHANNEL BIT(11)
220 #define CFG_CHANGED_P2P_OPER_CHANNEL BIT(12)
221 #define CFG_CHANGED_P2P_PREF_CHAN BIT(13)
222 #define CFG_CHANGED_EXT_PW_BACKEND BIT(14)
225 * struct wpa_config - wpa_supplicant configuration data
227 * This data structure is presents the per-interface (radio) configuration
228 * data. In many cases, there is only one struct wpa_config instance, but if
229 * more than one network interface is being controlled, one instance is used
234 * ssid - Head of the global network list
236 * This is the head for the list of all the configured networks.
238 struct wpa_ssid *ssid;
241 * pssid - Per-priority network lists (in priority order)
243 struct wpa_ssid **pssid;
246 * num_prio - Number of different priorities used in the pssid lists
248 * This indicates how many per-priority network lists are included in
254 * cred - Head of the credential list
256 * This is the head for the list of all the configured credentials.
258 struct wpa_cred *cred;
261 * eapol_version - IEEE 802.1X/EAPOL version number
263 * wpa_supplicant is implemented based on IEEE Std 802.1X-2004 which
264 * defines EAPOL version 2. However, there are many APs that do not
265 * handle the new version number correctly (they seem to drop the
266 * frames completely). In order to make wpa_supplicant interoperate
267 * with these APs, the version number is set to 1 by default. This
268 * configuration value can be used to set it to the new version (2).
273 * ap_scan - AP scanning/selection
275 * By default, wpa_supplicant requests driver to perform AP
276 * scanning and then uses the scan results to select a
277 * suitable AP. Another alternative is to allow the driver to
278 * take care of AP scanning and selection and use
279 * wpa_supplicant just to process EAPOL frames based on IEEE
280 * 802.11 association information from the driver.
282 * 1: wpa_supplicant initiates scanning and AP selection (default).
284 * 0: Driver takes care of scanning, AP selection, and IEEE 802.11
285 * association parameters (e.g., WPA IE generation); this mode can
286 * also be used with non-WPA drivers when using IEEE 802.1X mode;
287 * do not try to associate with APs (i.e., external program needs
288 * to control association). This mode must also be used when using
289 * wired Ethernet drivers.
291 * 2: like 0, but associate with APs using security policy and SSID
292 * (but not BSSID); this can be used, e.g., with ndiswrapper and NDIS
293 * drivers to enable operation with hidden SSIDs and optimized roaming;
294 * in this mode, the network blocks in the configuration are tried
295 * one by one until the driver reports successful association; each
296 * network block should have explicit security policy (i.e., only one
297 * option in the lists) for key_mgmt, pairwise, group, proto variables.
302 * disable_scan_offload - Disable automatic offloading of scan requests
304 * By default, %wpa_supplicant tries to offload scanning if the driver
305 * indicates support for this (sched_scan). This configuration
306 * parameter can be used to disable this offloading mechanism.
308 int disable_scan_offload;
311 * ctrl_interface - Parameters for the control interface
313 * If this is specified, %wpa_supplicant will open a control interface
314 * that is available for external programs to manage %wpa_supplicant.
315 * The meaning of this string depends on which control interface
316 * mechanism is used. For all cases, the existence of this parameter
317 * in configuration is used to determine whether the control interface
320 * For UNIX domain sockets (default on Linux and BSD): This is a
321 * directory that will be created for UNIX domain sockets for listening
322 * to requests from external programs (CLI/GUI, etc.) for status
323 * information and configuration. The socket file will be named based
324 * on the interface name, so multiple %wpa_supplicant processes can be
325 * run at the same time if more than one interface is used.
326 * /var/run/wpa_supplicant is the recommended directory for sockets and
327 * by default, wpa_cli will use it when trying to connect with
330 * Access control for the control interface can be configured
331 * by setting the directory to allow only members of a group
332 * to use sockets. This way, it is possible to run
333 * %wpa_supplicant as root (since it needs to change network
334 * configuration and open raw sockets) and still allow GUI/CLI
335 * components to be run as non-root users. However, since the
336 * control interface can be used to change the network
337 * configuration, this access needs to be protected in many
338 * cases. By default, %wpa_supplicant is configured to use gid
339 * 0 (root). If you want to allow non-root users to use the
340 * control interface, add a new group and change this value to
341 * match with that group. Add users that should have control
342 * interface access to this group.
344 * When configuring both the directory and group, use following format:
345 * DIR=/var/run/wpa_supplicant GROUP=wheel
346 * DIR=/var/run/wpa_supplicant GROUP=0
347 * (group can be either group name or gid)
349 * For UDP connections (default on Windows): The value will be ignored.
350 * This variable is just used to select that the control interface is
351 * to be created. The value can be set to, e.g., udp
352 * (ctrl_interface=udp).
354 * For Windows Named Pipe: This value can be used to set the security
355 * descriptor for controlling access to the control interface. Security
356 * descriptor can be set using Security Descriptor String Format (see
357 * http://msdn.microsoft.com/library/default.asp?url=/library/en-us/secauthz/security/security_descriptor_string_format.asp).
358 * The descriptor string needs to be prefixed with SDDL=. For example,
359 * ctrl_interface=SDDL=D: would set an empty DACL (which will reject
362 char *ctrl_interface;
365 * ctrl_interface_group - Control interface group (DEPRECATED)
367 * This variable is only used for backwards compatibility. Group for
368 * UNIX domain sockets should now be specified using GROUP=group in
369 * ctrl_interface variable.
371 char *ctrl_interface_group;
374 * fast_reauth - EAP fast re-authentication (session resumption)
376 * By default, fast re-authentication is enabled for all EAP methods
377 * that support it. This variable can be used to disable fast
378 * re-authentication (by setting fast_reauth=0). Normally, there is no
379 * need to disable fast re-authentication.
384 * opensc_engine_path - Path to the OpenSSL engine for opensc
386 * This is an OpenSSL specific configuration option for loading OpenSC
387 * engine (engine_opensc.so); if %NULL, this engine is not loaded.
389 char *opensc_engine_path;
392 * pkcs11_engine_path - Path to the OpenSSL engine for PKCS#11
394 * This is an OpenSSL specific configuration option for loading PKCS#11
395 * engine (engine_pkcs11.so); if %NULL, this engine is not loaded.
397 char *pkcs11_engine_path;
400 * pkcs11_module_path - Path to the OpenSSL OpenSC/PKCS#11 module
402 * This is an OpenSSL specific configuration option for configuring
403 * path to OpenSC/PKCS#11 engine (opensc-pkcs11.so); if %NULL, this
404 * module is not loaded.
406 char *pkcs11_module_path;
409 * pcsc_reader - PC/SC reader name prefix
411 * If not %NULL, PC/SC reader with a name that matches this prefix is
412 * initialized for SIM/USIM access. Empty string can be used to match
413 * the first available reader.
418 * pcsc_pin - PIN for USIM, GSM SIM, and smartcards
420 * This field is used to configure PIN for SIM/USIM for EAP-SIM and
421 * EAP-AKA. If left out, this will be asked through control interface.
426 * driver_param - Driver interface parameters
428 * This text string is passed to the selected driver interface with the
429 * optional struct wpa_driver_ops::set_param() handler. This can be
430 * used to configure driver specific options without having to add new
431 * driver interface functionality.
436 * dot11RSNAConfigPMKLifetime - Maximum lifetime of a PMK
438 * dot11 MIB variable for the maximum lifetime of a PMK in the PMK
439 * cache (unit: seconds).
441 unsigned int dot11RSNAConfigPMKLifetime;
444 * dot11RSNAConfigPMKReauthThreshold - PMK re-authentication threshold
446 * dot11 MIB variable for the percentage of the PMK lifetime
447 * that should expire before an IEEE 802.1X reauthentication occurs.
449 unsigned int dot11RSNAConfigPMKReauthThreshold;
452 * dot11RSNAConfigSATimeout - Security association timeout
454 * dot11 MIB variable for the maximum time a security association
455 * shall take to set up (unit: seconds).
457 unsigned int dot11RSNAConfigSATimeout;
460 * update_config - Is wpa_supplicant allowed to update configuration
462 * This variable control whether wpa_supplicant is allow to re-write
463 * its configuration with wpa_config_write(). If this is zero,
464 * configuration data is only changed in memory and the external data
465 * is not overriden. If this is non-zero, wpa_supplicant will update
466 * the configuration data (e.g., a file) whenever configuration is
467 * changed. This update may replace the old configuration which can
468 * remove comments from it in case of a text file configuration.
473 * blobs - Configuration blobs
475 struct wpa_config_blob *blobs;
478 * uuid - Universally Unique IDentifier (UUID; see RFC 4122) for WPS
483 * device_name - Device Name (WPS)
484 * User-friendly description of device; up to 32 octets encoded in
490 * manufacturer - Manufacturer (WPS)
491 * The manufacturer of the device (up to 64 ASCII characters)
496 * model_name - Model Name (WPS)
497 * Model of the device (up to 32 ASCII characters)
502 * model_number - Model Number (WPS)
503 * Additional device description (up to 32 ASCII characters)
508 * serial_number - Serial Number (WPS)
509 * Serial number of the device (up to 32 characters)
514 * device_type - Primary Device Type (WPS)
516 u8 device_type[WPS_DEV_TYPE_LEN];
519 * config_methods - Config Methods
521 * This is a space-separated list of supported WPS configuration
522 * methods. For example, "label virtual_display virtual_push_button
524 * Available methods: usba ethernet label display ext_nfc_token
525 * int_nfc_token nfc_interface push_button keypad
526 * virtual_display physical_display
527 * virtual_push_button physical_push_button.
529 char *config_methods;
532 * os_version - OS Version (WPS)
533 * 4-octet operating system version number
538 * country - Country code
540 * This is the ISO/IEC alpha2 country code for which we are operating
546 * wps_cred_processing - Credential processing
548 * 0 = process received credentials internally
549 * 1 = do not process received credentials; just pass them over
550 * ctrl_iface to external program(s)
551 * 2 = process received credentials internally and pass them over
552 * ctrl_iface to external program(s)
554 int wps_cred_processing;
556 #define MAX_SEC_DEVICE_TYPES 5
558 * sec_device_types - Secondary Device Types (P2P)
560 u8 sec_device_type[MAX_SEC_DEVICE_TYPES][WPS_DEV_TYPE_LEN];
561 int num_sec_device_types;
563 int p2p_listen_reg_class;
564 int p2p_listen_channel;
565 int p2p_oper_reg_class;
566 int p2p_oper_channel;
568 char *p2p_ssid_postfix;
569 int persistent_reconnect;
571 unsigned int num_p2p_pref_chan;
572 struct p2p_channel *p2p_pref_chan;
574 struct wpabuf *wps_vendor_ext_m1;
576 #define MAX_WPS_VENDOR_EXT 10
578 * wps_vendor_ext - Vendor extension attributes in WPS
580 struct wpabuf *wps_vendor_ext[MAX_WPS_VENDOR_EXT];
583 * p2p_group_idle - Maximum idle time in seconds for P2P group
585 * This value controls how long a P2P group is maintained after there
586 * is no other members in the group. As a GO, this means no associated
587 * stations in the group. As a P2P client, this means no GO seen in
588 * scan results. The maximum idle time is specified in seconds with 0
589 * indicating no time limit, i.e., the P2P group remains in active
590 * state indefinitely until explicitly removed. As a P2P client, the
591 * maximum idle time of P2P_MAX_CLIENT_IDLE seconds is enforced, i.e.,
592 * this parameter is mainly meant for GO use and for P2P client, it can
593 * only be used to reduce the default timeout to smaller value. A
594 * special value -1 can be used to configure immediate removal of the
595 * group for P2P client role on any disconnection after the data
596 * connection has been established.
601 * bss_max_count - Maximum number of BSS entries to keep in memory
603 unsigned int bss_max_count;
606 * bss_expiration_age - BSS entry age after which it can be expired
608 * This value controls the time in seconds after which a BSS entry
609 * gets removed if it has not been updated or is not in use.
611 unsigned int bss_expiration_age;
614 * bss_expiration_scan_count - Expire BSS after number of scans
616 * If the BSS entry has not been seen in this many scans, it will be
617 * removed. A value of 1 means that entry is removed after the first
618 * scan in which the BSSID is not seen. Larger values can be used
619 * to avoid BSS entries disappearing if they are not visible in
620 * every scan (e.g., low signal quality or interference).
622 unsigned int bss_expiration_scan_count;
625 * filter_ssids - SSID-based scan result filtering
627 * 0 = do not filter scan results
628 * 1 = only include configured SSIDs in scan results/BSS table
633 * filter_rssi - RSSI-based scan result filtering
635 * 0 = do not filter scan results
636 * -n = filter scan results below -n dBm
641 * max_num_sta - Maximum number of STAs in an AP/P2P GO
643 unsigned int max_num_sta;
646 * changed_parameters - Bitmap of changed parameters since last update
648 unsigned int changed_parameters;
651 * disassoc_low_ack - Disassocicate stations with massive packet loss
653 int disassoc_low_ack;
656 * interworking - Whether Interworking (IEEE 802.11u) is enabled
661 * access_network_type - Access Network Type
663 * When Interworking is enabled, scans will be limited to APs that
664 * advertise the specified Access Network Type (0..15; with 15
665 * indicating wildcard match).
667 int access_network_type;
670 * hessid - Homogenous ESS identifier
672 * If this is set (any octet is non-zero), scans will be used to
673 * request response only from BSSes belonging to the specified
674 * Homogeneous ESS. This is used only if interworking is enabled.
684 * pbc_in_m1 - AP mode WPS probing workaround for PBC with Windows 7
686 * Windows 7 uses incorrect way of figuring out AP's WPS capabilities
687 * by acting as a Registrar and using M1 from the AP. The config
688 * methods attribute in that message is supposed to indicate only the
689 * configuration method supported by the AP in Enrollee role, i.e., to
690 * add an external Registrar. For that case, PBC shall not be used and
691 * as such, the PushButton config method is removed from M1 by default.
692 * If pbc_in_m1=1 is included in the configuration file, the PushButton
693 * config method is left in M1 (if included in config_methods
694 * parameter) to allow Windows 7 to use PBC instead of PIN (e.g., from
695 * a label in the AP).
700 * autoscan - Automatic scan parameters or %NULL if none
702 * This is an optional set of parameters for automatic scanning
703 * within an interface in following format:
704 * <autoscan module name>:<module parameters>
709 * wps_nfc_dev_pw_id - NFC Device Password ID for password token
711 int wps_nfc_dev_pw_id;
714 * wps_nfc_dh_pubkey - NFC DH Public Key for password token
716 struct wpabuf *wps_nfc_dh_pubkey;
719 * wps_nfc_dh_privkey - NFC DH Private Key for password token
721 struct wpabuf *wps_nfc_dh_privkey;
724 * wps_nfc_dev_pw - NFC Device Password for password token
726 struct wpabuf *wps_nfc_dev_pw;
729 * ext_password_backend - External password backend or %NULL if none
731 * format: <backend name>[:<optional backend parameters>]
733 char *ext_password_backend;
736 * p2p_go_max_inactivity - Timeout in seconds to detect STA inactivity
738 * This timeout value is used in P2P GO mode to clean up
740 * By default: 300 seconds.
742 int p2p_go_max_inactivity;
744 struct hostapd_wmm_ac_params wmm_ac_params[4];
747 * auto_interworking - Whether to use network selection automatically
749 * 0 = do not automatically go through Interworking network selection
750 * (i.e., require explicit interworking_select command for this)
751 * 1 = perform Interworking network selection if one or more
752 * credentials have been configured and scan did not find a
753 * matching network block
755 int auto_interworking;
758 * p2p_go_ht40 - Default mode for HT40 enable when operating as GO.
760 * This will take effect for p2p_group_add, p2p_connect, and p2p_invite.
761 * Note that regulatory constraints and driver capabilities are
762 * consulted anyway, so setting it to 1 can't do real harm.
763 * By default: 0 (disabled)
768 * p2p_disabled - Whether P2P operations are disabled for this interface
773 * p2p_no_group_iface - Whether group interfaces can be used
775 * By default, wpa_supplicant will create a separate interface for P2P
776 * group operations if the driver supports this. This functionality can
777 * be disabled by setting this parameter to 1. In that case, the same
778 * interface that was used for the P2P management operations is used
779 * also for the group operation.
781 int p2p_no_group_iface;
784 * okc - Whether to enable opportunistic key caching by default
786 * By default, OKC is disabled unless enabled by the per-network
787 * proactive_key_caching=1 parameter. okc=1 can be used to change this
793 * pmf - Whether to enable/require PMF by default
795 * By default, PMF is disabled unless enabled by the per-network
796 * ieee80211w=1 or ieee80211w=2 parameter. pmf=1/2 can be used to change
797 * this default behavior.
799 enum mfp_options pmf;
802 * sae_groups - Preference list of enabled groups for SAE
804 * By default (if this parameter is not set), the mandatory group 19
805 * (ECC group defined over a 256-bit prime order field) is preferred,
806 * but other groups are also enabled. If this parameter is set, the
807 * groups will be tried in the indicated order.
813 /* Prototypes for common functions from config.c */
815 void wpa_config_free(struct wpa_config *ssid);
816 void wpa_config_free_ssid(struct wpa_ssid *ssid);
817 void wpa_config_foreach_network(struct wpa_config *config,
818 void (*func)(void *, struct wpa_ssid *),
820 struct wpa_ssid * wpa_config_get_network(struct wpa_config *config, int id);
821 struct wpa_ssid * wpa_config_add_network(struct wpa_config *config);
822 int wpa_config_remove_network(struct wpa_config *config, int id);
823 void wpa_config_set_network_defaults(struct wpa_ssid *ssid);
824 int wpa_config_set(struct wpa_ssid *ssid, const char *var, const char *value,
826 int wpa_config_set_quoted(struct wpa_ssid *ssid, const char *var,
828 char ** wpa_config_get_all(struct wpa_ssid *ssid, int get_keys);
829 char * wpa_config_get(struct wpa_ssid *ssid, const char *var);
830 char * wpa_config_get_no_key(struct wpa_ssid *ssid, const char *var);
831 void wpa_config_update_psk(struct wpa_ssid *ssid);
832 int wpa_config_add_prio_network(struct wpa_config *config,
833 struct wpa_ssid *ssid);
834 int wpa_config_update_prio_list(struct wpa_config *config);
835 const struct wpa_config_blob * wpa_config_get_blob(struct wpa_config *config,
837 void wpa_config_set_blob(struct wpa_config *config,
838 struct wpa_config_blob *blob);
839 void wpa_config_free_blob(struct wpa_config_blob *blob);
840 int wpa_config_remove_blob(struct wpa_config *config, const char *name);
842 struct wpa_cred * wpa_config_get_cred(struct wpa_config *config, int id);
843 struct wpa_cred * wpa_config_add_cred(struct wpa_config *config);
844 int wpa_config_remove_cred(struct wpa_config *config, int id);
845 void wpa_config_free_cred(struct wpa_cred *cred);
846 int wpa_config_set_cred(struct wpa_cred *cred, const char *var,
847 const char *value, int line);
849 struct wpa_config * wpa_config_alloc_empty(const char *ctrl_interface,
850 const char *driver_param);
851 #ifndef CONFIG_NO_STDOUT_DEBUG
852 void wpa_config_debug_dump_networks(struct wpa_config *config);
853 #else /* CONFIG_NO_STDOUT_DEBUG */
854 #define wpa_config_debug_dump_networks(c) do { } while (0)
855 #endif /* CONFIG_NO_STDOUT_DEBUG */
858 /* Prototypes for common functions from config.c */
859 int wpa_config_process_global(struct wpa_config *config, char *pos, int line);
862 /* Prototypes for backend specific functions from the selected config_*.c */
865 * wpa_config_read - Read and parse configuration database
866 * @name: Name of the configuration (e.g., path and file name for the
867 * configuration file)
868 * Returns: Pointer to allocated configuration data or %NULL on failure
870 * This function reads configuration data, parses its contents, and allocates
871 * data structures needed for storing configuration information. The allocated
872 * data can be freed with wpa_config_free().
874 * Each configuration backend needs to implement this function.
876 struct wpa_config * wpa_config_read(const char *name);
879 * wpa_config_write - Write or update configuration data
880 * @name: Name of the configuration (e.g., path and file name for the
881 * configuration file)
882 * @config: Configuration data from wpa_config_read()
883 * Returns: 0 on success, -1 on failure
885 * This function write all configuration data into an external database (e.g.,
886 * a text file) in a format that can be read with wpa_config_read(). This can
887 * be used to allow wpa_supplicant to update its configuration, e.g., when a
888 * new network is added or a password is changed.
890 * Each configuration backend needs to implement this function.
892 int wpa_config_write(const char *name, struct wpa_config *config);
894 #endif /* CONFIG_H */