xref: /freebsd/contrib/wpa/wpa_supplicant/config.h (revision 09a53ad8f1318c5daae6cfb19d97f4f6459f0013)
1 /*
2  * WPA Supplicant / Configuration file structures
3  * Copyright (c) 2003-2012, 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 CONFIG_H
10 #define CONFIG_H
11 
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_USER_MPM 1
19 #define DEFAULT_MAX_PEER_LINKS 99
20 #define DEFAULT_MESH_MAX_INACTIVITY 300
21 /*
22  * The default dot11RSNASAERetransPeriod is defined as 40 ms in the standard,
23  * but use 1000 ms in practice to avoid issues on low power CPUs.
24  */
25 #define DEFAULT_DOT11_RSNA_SAE_RETRANS_PERIOD 1000
26 #define DEFAULT_FAST_REAUTH 1
27 #define DEFAULT_P2P_GO_INTENT 7
28 #define DEFAULT_P2P_INTRA_BSS 1
29 #define DEFAULT_P2P_GO_MAX_INACTIVITY (5 * 60)
30 #define DEFAULT_P2P_OPTIMIZE_LISTEN_CHAN 0
31 #define DEFAULT_BSS_MAX_COUNT 200
32 #define DEFAULT_BSS_EXPIRATION_AGE 180
33 #define DEFAULT_BSS_EXPIRATION_SCAN_COUNT 2
34 #define DEFAULT_MAX_NUM_STA 128
35 #define DEFAULT_ACCESS_NETWORK_TYPE 15
36 #define DEFAULT_SCAN_CUR_FREQ 0
37 #define DEFAULT_P2P_SEARCH_DELAY 500
38 #define DEFAULT_RAND_ADDR_LIFETIME 60
39 #define DEFAULT_KEY_MGMT_OFFLOAD 1
40 #define DEFAULT_CERT_IN_CB 1
41 #define DEFAULT_P2P_GO_CTWINDOW 0
42 
43 #include "config_ssid.h"
44 #include "wps/wps.h"
45 #include "common/ieee802_11_defs.h"
46 #include "common/ieee802_11_common.h"
47 
48 
49 struct wpa_cred {
50 	/**
51 	 * next - Next credential in the list
52 	 *
53 	 * This pointer can be used to iterate over all credentials. The head
54 	 * of this list is stored in the cred field of struct wpa_config.
55 	 */
56 	struct wpa_cred *next;
57 
58 	/**
59 	 * id - Unique id for the credential
60 	 *
61 	 * This identifier is used as a unique identifier for each credential
62 	 * block when using the control interface. Each credential is allocated
63 	 * an id when it is being created, either when reading the
64 	 * configuration file or when a new credential is added through the
65 	 * control interface.
66 	 */
67 	int id;
68 
69 	/**
70 	 * temporary - Whether this credential is temporary and not to be saved
71 	 */
72 	int temporary;
73 
74 	/**
75 	 * priority - Priority group
76 	 *
77 	 * By default, all networks and credentials get the same priority group
78 	 * (0). This field can be used to give higher priority for credentials
79 	 * (and similarly in struct wpa_ssid for network blocks) to change the
80 	 * Interworking automatic networking selection behavior. The matching
81 	 * network (based on either an enabled network block or a credential)
82 	 * with the highest priority value will be selected.
83 	 */
84 	int priority;
85 
86 	/**
87 	 * pcsc - Use PC/SC and SIM/USIM card
88 	 */
89 	int pcsc;
90 
91 	/**
92 	 * realm - Home Realm for Interworking
93 	 */
94 	char *realm;
95 
96 	/**
97 	 * username - Username for Interworking network selection
98 	 */
99 	char *username;
100 
101 	/**
102 	 * password - Password for Interworking network selection
103 	 */
104 	char *password;
105 
106 	/**
107 	 * ext_password - Whether password is a name for external storage
108 	 */
109 	int ext_password;
110 
111 	/**
112 	 * ca_cert - CA certificate for Interworking network selection
113 	 */
114 	char *ca_cert;
115 
116 	/**
117 	 * client_cert - File path to client certificate file (PEM/DER)
118 	 *
119 	 * This field is used with Interworking networking selection for a case
120 	 * where client certificate/private key is used for authentication
121 	 * (EAP-TLS). Full path to the file should be used since working
122 	 * directory may change when wpa_supplicant is run in the background.
123 	 *
124 	 * Alternatively, a named configuration blob can be used by setting
125 	 * this to blob://blob_name.
126 	 */
127 	char *client_cert;
128 
129 	/**
130 	 * private_key - File path to client private key file (PEM/DER/PFX)
131 	 *
132 	 * When PKCS#12/PFX file (.p12/.pfx) is used, client_cert should be
133 	 * commented out. Both the private key and certificate will be read
134 	 * from the PKCS#12 file in this case. Full path to the file should be
135 	 * used since working directory may change when wpa_supplicant is run
136 	 * in the background.
137 	 *
138 	 * Windows certificate store can be used by leaving client_cert out and
139 	 * configuring private_key in one of the following formats:
140 	 *
141 	 * cert://substring_to_match
142 	 *
143 	 * hash://certificate_thumbprint_in_hex
144 	 *
145 	 * For example: private_key="hash://63093aa9c47f56ae88334c7b65a4"
146 	 *
147 	 * Note that when running wpa_supplicant as an application, the user
148 	 * certificate store (My user account) is used, whereas computer store
149 	 * (Computer account) is used when running wpasvc as a service.
150 	 *
151 	 * Alternatively, a named configuration blob can be used by setting
152 	 * this to blob://blob_name.
153 	 */
154 	char *private_key;
155 
156 	/**
157 	 * private_key_passwd - Password for private key file
158 	 */
159 	char *private_key_passwd;
160 
161 	/**
162 	 * imsi - IMSI in <MCC> | <MNC> | '-' | <MSIN> format
163 	 */
164 	char *imsi;
165 
166 	/**
167 	 * milenage - Milenage parameters for SIM/USIM simulator in
168 	 *	<Ki>:<OPc>:<SQN> format
169 	 */
170 	char *milenage;
171 
172 	/**
173 	 * domain_suffix_match - Constraint for server domain name
174 	 *
175 	 * If set, this FQDN is used as a suffix match requirement for the AAA
176 	 * server certificate in SubjectAltName dNSName element(s). If a
177 	 * matching dNSName is found, this constraint is met. If no dNSName
178 	 * values are present, this constraint is matched against SubjectName CN
179 	 * using same suffix match comparison. Suffix match here means that the
180 	 * host/domain name is compared one label at a time starting from the
181 	 * top-level domain and all the labels in @domain_suffix_match shall be
182 	 * included in the certificate. The certificate may include additional
183 	 * sub-level labels in addition to the required labels.
184 	 *
185 	 * For example, domain_suffix_match=example.com would match
186 	 * test.example.com but would not match test-example.com.
187 	 */
188 	char *domain_suffix_match;
189 
190 	/**
191 	 * domain - Home service provider FQDN(s)
192 	 *
193 	 * This is used to compare against the Domain Name List to figure out
194 	 * whether the AP is operated by the Home SP. Multiple domain entries
195 	 * can be used to configure alternative FQDNs that will be considered
196 	 * home networks.
197 	 */
198 	char **domain;
199 
200 	/**
201 	 * num_domain - Number of FQDNs in the domain array
202 	 */
203 	size_t num_domain;
204 
205 	/**
206 	 * roaming_consortium - Roaming Consortium OI
207 	 *
208 	 * If roaming_consortium_len is non-zero, this field contains the
209 	 * Roaming Consortium OI that can be used to determine which access
210 	 * points support authentication with this credential. This is an
211 	 * alternative to the use of the realm parameter. When using Roaming
212 	 * Consortium to match the network, the EAP parameters need to be
213 	 * pre-configured with the credential since the NAI Realm information
214 	 * may not be available or fetched.
215 	 */
216 	u8 roaming_consortium[15];
217 
218 	/**
219 	 * roaming_consortium_len - Length of roaming_consortium
220 	 */
221 	size_t roaming_consortium_len;
222 
223 	u8 required_roaming_consortium[15];
224 	size_t required_roaming_consortium_len;
225 
226 	/**
227 	 * eap_method - EAP method to use
228 	 *
229 	 * Pre-configured EAP method to use with this credential or %NULL to
230 	 * indicate no EAP method is selected, i.e., the method will be
231 	 * selected automatically based on ANQP information.
232 	 */
233 	struct eap_method_type *eap_method;
234 
235 	/**
236 	 * phase1 - Phase 1 (outer authentication) parameters
237 	 *
238 	 * Pre-configured EAP parameters or %NULL.
239 	 */
240 	char *phase1;
241 
242 	/**
243 	 * phase2 - Phase 2 (inner authentication) parameters
244 	 *
245 	 * Pre-configured EAP parameters or %NULL.
246 	 */
247 	char *phase2;
248 
249 	struct excluded_ssid {
250 		u8 ssid[SSID_MAX_LEN];
251 		size_t ssid_len;
252 	} *excluded_ssid;
253 	size_t num_excluded_ssid;
254 
255 	struct roaming_partner {
256 		char fqdn[128];
257 		int exact_match;
258 		u8 priority;
259 		char country[3];
260 	} *roaming_partner;
261 	size_t num_roaming_partner;
262 
263 	int update_identifier;
264 
265 	/**
266 	 * provisioning_sp - FQDN of the SP that provisioned the credential
267 	 */
268 	char *provisioning_sp;
269 
270 	/**
271 	 * sp_priority - Credential priority within a provisioning SP
272 	 *
273 	 * This is the priority of the credential among all credentials
274 	 * provisionined by the same SP (i.e., for entries that have identical
275 	 * provisioning_sp value). The range of this priority is 0-255 with 0
276 	 * being the highest and 255 the lower priority.
277 	 */
278 	int sp_priority;
279 
280 	unsigned int min_dl_bandwidth_home;
281 	unsigned int min_ul_bandwidth_home;
282 	unsigned int min_dl_bandwidth_roaming;
283 	unsigned int min_ul_bandwidth_roaming;
284 
285 	/**
286 	 * max_bss_load - Maximum BSS Load Channel Utilization (1..255)
287 	 * This value is used as the maximum channel utilization for network
288 	 * selection purposes for home networks. If the AP does not advertise
289 	 * BSS Load or if the limit would prevent any connection, this
290 	 * constraint will be ignored.
291 	 */
292 	unsigned int max_bss_load;
293 
294 	unsigned int num_req_conn_capab;
295 	u8 *req_conn_capab_proto;
296 	int **req_conn_capab_port;
297 
298 	/**
299 	 * ocsp - Whether to use/require OCSP to check server certificate
300 	 *
301 	 * 0 = do not use OCSP stapling (TLS certificate status extension)
302 	 * 1 = try to use OCSP stapling, but not require response
303 	 * 2 = require valid OCSP stapling response
304 	 */
305 	int ocsp;
306 
307 	/**
308 	 * sim_num - User selected SIM identifier
309 	 *
310 	 * This variable is used for identifying which SIM is used if the system
311 	 * has more than one.
312 	 */
313 	int sim_num;
314 };
315 
316 
317 #define CFG_CHANGED_DEVICE_NAME BIT(0)
318 #define CFG_CHANGED_CONFIG_METHODS BIT(1)
319 #define CFG_CHANGED_DEVICE_TYPE BIT(2)
320 #define CFG_CHANGED_OS_VERSION BIT(3)
321 #define CFG_CHANGED_UUID BIT(4)
322 #define CFG_CHANGED_COUNTRY BIT(5)
323 #define CFG_CHANGED_SEC_DEVICE_TYPE BIT(6)
324 #define CFG_CHANGED_P2P_SSID_POSTFIX BIT(7)
325 #define CFG_CHANGED_WPS_STRING BIT(8)
326 #define CFG_CHANGED_P2P_INTRA_BSS BIT(9)
327 #define CFG_CHANGED_VENDOR_EXTENSION BIT(10)
328 #define CFG_CHANGED_P2P_LISTEN_CHANNEL BIT(11)
329 #define CFG_CHANGED_P2P_OPER_CHANNEL BIT(12)
330 #define CFG_CHANGED_P2P_PREF_CHAN BIT(13)
331 #define CFG_CHANGED_EXT_PW_BACKEND BIT(14)
332 #define CFG_CHANGED_NFC_PASSWORD_TOKEN BIT(15)
333 #define CFG_CHANGED_P2P_PASSPHRASE_LEN BIT(16)
334 
335 /**
336  * struct wpa_config - wpa_supplicant configuration data
337  *
338  * This data structure is presents the per-interface (radio) configuration
339  * data. In many cases, there is only one struct wpa_config instance, but if
340  * more than one network interface is being controlled, one instance is used
341  * for each.
342  */
343 struct wpa_config {
344 	/**
345 	 * ssid - Head of the global network list
346 	 *
347 	 * This is the head for the list of all the configured networks.
348 	 */
349 	struct wpa_ssid *ssid;
350 
351 	/**
352 	 * pssid - Per-priority network lists (in priority order)
353 	 */
354 	struct wpa_ssid **pssid;
355 
356 	/**
357 	 * num_prio - Number of different priorities used in the pssid lists
358 	 *
359 	 * This indicates how many per-priority network lists are included in
360 	 * pssid.
361 	 */
362 	int num_prio;
363 
364 	/**
365 	 * cred - Head of the credential list
366 	 *
367 	 * This is the head for the list of all the configured credentials.
368 	 */
369 	struct wpa_cred *cred;
370 
371 	/**
372 	 * eapol_version - IEEE 802.1X/EAPOL version number
373 	 *
374 	 * wpa_supplicant is implemented based on IEEE Std 802.1X-2004 which
375 	 * defines EAPOL version 2. However, there are many APs that do not
376 	 * handle the new version number correctly (they seem to drop the
377 	 * frames completely). In order to make wpa_supplicant interoperate
378 	 * with these APs, the version number is set to 1 by default. This
379 	 * configuration value can be used to set it to the new version (2).
380 	 */
381 	int eapol_version;
382 
383 	/**
384 	 * ap_scan - AP scanning/selection
385 	 *
386 	 * By default, wpa_supplicant requests driver to perform AP
387 	 * scanning and then uses the scan results to select a
388 	 * suitable AP. Another alternative is to allow the driver to
389 	 * take care of AP scanning and selection and use
390 	 * wpa_supplicant just to process EAPOL frames based on IEEE
391 	 * 802.11 association information from the driver.
392 	 *
393 	 * 1: wpa_supplicant initiates scanning and AP selection (default).
394 	 *
395 	 * 0: Driver takes care of scanning, AP selection, and IEEE 802.11
396 	 * association parameters (e.g., WPA IE generation); this mode can
397 	 * also be used with non-WPA drivers when using IEEE 802.1X mode;
398 	 * do not try to associate with APs (i.e., external program needs
399 	 * to control association). This mode must also be used when using
400 	 * wired Ethernet drivers.
401 	 *
402 	 * 2: like 0, but associate with APs using security policy and SSID
403 	 * (but not BSSID); this can be used, e.g., with ndiswrapper and NDIS
404 	 * drivers to enable operation with hidden SSIDs and optimized roaming;
405 	 * in this mode, the network blocks in the configuration are tried
406 	 * one by one until the driver reports successful association; each
407 	 * network block should have explicit security policy (i.e., only one
408 	 * option in the lists) for key_mgmt, pairwise, group, proto variables.
409 	 *
410 	 * Note: ap_scan=2 should not be used with the nl80211 driver interface
411 	 * (the current Linux interface). ap_scan=1 is optimized work working
412 	 * with nl80211. For finding networks using hidden SSID, scan_ssid=1 in
413 	 * the network block can be used with nl80211.
414 	 */
415 	int ap_scan;
416 
417 	/**
418 	 * bgscan - Background scan and roaming parameters or %NULL if none
419 	 *
420 	 * This is an optional set of parameters for background scanning and
421 	 * roaming within a network (ESS). For more detailed information see
422 	 * ssid block documentation.
423 	 *
424 	 * The variable defines default bgscan behavior for all BSS station
425 	 * networks except for those which have their own bgscan configuration.
426 	 */
427 	 char *bgscan;
428 
429 	/**
430 	 * disable_scan_offload - Disable automatic offloading of scan requests
431 	 *
432 	 * By default, %wpa_supplicant tries to offload scanning if the driver
433 	 * indicates support for this (sched_scan). This configuration
434 	 * parameter can be used to disable this offloading mechanism.
435 	 */
436 	int disable_scan_offload;
437 
438 	/**
439 	 * ctrl_interface - Parameters for the control interface
440 	 *
441 	 * If this is specified, %wpa_supplicant will open a control interface
442 	 * that is available for external programs to manage %wpa_supplicant.
443 	 * The meaning of this string depends on which control interface
444 	 * mechanism is used. For all cases, the existence of this parameter
445 	 * in configuration is used to determine whether the control interface
446 	 * is enabled.
447 	 *
448 	 * For UNIX domain sockets (default on Linux and BSD): This is a
449 	 * directory that will be created for UNIX domain sockets for listening
450 	 * to requests from external programs (CLI/GUI, etc.) for status
451 	 * information and configuration. The socket file will be named based
452 	 * on the interface name, so multiple %wpa_supplicant processes can be
453 	 * run at the same time if more than one interface is used.
454 	 * /var/run/wpa_supplicant is the recommended directory for sockets and
455 	 * by default, wpa_cli will use it when trying to connect with
456 	 * %wpa_supplicant.
457 	 *
458 	 * Access control for the control interface can be configured
459 	 * by setting the directory to allow only members of a group
460 	 * to use sockets. This way, it is possible to run
461 	 * %wpa_supplicant as root (since it needs to change network
462 	 * configuration and open raw sockets) and still allow GUI/CLI
463 	 * components to be run as non-root users. However, since the
464 	 * control interface can be used to change the network
465 	 * configuration, this access needs to be protected in many
466 	 * cases. By default, %wpa_supplicant is configured to use gid
467 	 * 0 (root). If you want to allow non-root users to use the
468 	 * control interface, add a new group and change this value to
469 	 * match with that group. Add users that should have control
470 	 * interface access to this group.
471 	 *
472 	 * When configuring both the directory and group, use following format:
473 	 * DIR=/var/run/wpa_supplicant GROUP=wheel
474 	 * DIR=/var/run/wpa_supplicant GROUP=0
475 	 * (group can be either group name or gid)
476 	 *
477 	 * For UDP connections (default on Windows): The value will be ignored.
478 	 * This variable is just used to select that the control interface is
479 	 * to be created. The value can be set to, e.g., udp
480 	 * (ctrl_interface=udp).
481 	 *
482 	 * For Windows Named Pipe: This value can be used to set the security
483 	 * descriptor for controlling access to the control interface. Security
484 	 * descriptor can be set using Security Descriptor String Format (see
485 	 * http://msdn.microsoft.com/library/default.asp?url=/library/en-us/secauthz/security/security_descriptor_string_format.asp).
486 	 * The descriptor string needs to be prefixed with SDDL=. For example,
487 	 * ctrl_interface=SDDL=D: would set an empty DACL (which will reject
488 	 * all connections).
489 	 */
490 	char *ctrl_interface;
491 
492 	/**
493 	 * ctrl_interface_group - Control interface group (DEPRECATED)
494 	 *
495 	 * This variable is only used for backwards compatibility. Group for
496 	 * UNIX domain sockets should now be specified using GROUP=group in
497 	 * ctrl_interface variable.
498 	 */
499 	char *ctrl_interface_group;
500 
501 	/**
502 	 * fast_reauth - EAP fast re-authentication (session resumption)
503 	 *
504 	 * By default, fast re-authentication is enabled for all EAP methods
505 	 * that support it. This variable can be used to disable fast
506 	 * re-authentication (by setting fast_reauth=0). Normally, there is no
507 	 * need to disable fast re-authentication.
508 	 */
509 	int fast_reauth;
510 
511 	/**
512 	 * opensc_engine_path - Path to the OpenSSL engine for opensc
513 	 *
514 	 * This is an OpenSSL specific configuration option for loading OpenSC
515 	 * engine (engine_opensc.so); if %NULL, this engine is not loaded.
516 	 */
517 	char *opensc_engine_path;
518 
519 	/**
520 	 * pkcs11_engine_path - Path to the OpenSSL engine for PKCS#11
521 	 *
522 	 * This is an OpenSSL specific configuration option for loading PKCS#11
523 	 * engine (engine_pkcs11.so); if %NULL, this engine is not loaded.
524 	 */
525 	char *pkcs11_engine_path;
526 
527 	/**
528 	 * pkcs11_module_path - Path to the OpenSSL OpenSC/PKCS#11 module
529 	 *
530 	 * This is an OpenSSL specific configuration option for configuring
531 	 * path to OpenSC/PKCS#11 engine (opensc-pkcs11.so); if %NULL, this
532 	 * module is not loaded.
533 	 */
534 	char *pkcs11_module_path;
535 
536 	/**
537 	 * openssl_ciphers - OpenSSL cipher string
538 	 *
539 	 * This is an OpenSSL specific configuration option for configuring the
540 	 * default ciphers. If not set, "DEFAULT:!EXP:!LOW" is used as the
541 	 * default.
542 	 */
543 	char *openssl_ciphers;
544 
545 	/**
546 	 * pcsc_reader - PC/SC reader name prefix
547 	 *
548 	 * If not %NULL, PC/SC reader with a name that matches this prefix is
549 	 * initialized for SIM/USIM access. Empty string can be used to match
550 	 * the first available reader.
551 	 */
552 	char *pcsc_reader;
553 
554 	/**
555 	 * pcsc_pin - PIN for USIM, GSM SIM, and smartcards
556 	 *
557 	 * This field is used to configure PIN for SIM/USIM for EAP-SIM and
558 	 * EAP-AKA. If left out, this will be asked through control interface.
559 	 */
560 	char *pcsc_pin;
561 
562 	/**
563 	 * external_sim - Use external processing for SIM/USIM operations
564 	 */
565 	int external_sim;
566 
567 	/**
568 	 * driver_param - Driver interface parameters
569 	 *
570 	 * This text string is passed to the selected driver interface with the
571 	 * optional struct wpa_driver_ops::set_param() handler. This can be
572 	 * used to configure driver specific options without having to add new
573 	 * driver interface functionality.
574 	 */
575 	char *driver_param;
576 
577 	/**
578 	 * dot11RSNAConfigPMKLifetime - Maximum lifetime of a PMK
579 	 *
580 	 * dot11 MIB variable for the maximum lifetime of a PMK in the PMK
581 	 * cache (unit: seconds).
582 	 */
583 	unsigned int dot11RSNAConfigPMKLifetime;
584 
585 	/**
586 	 * dot11RSNAConfigPMKReauthThreshold - PMK re-authentication threshold
587 	 *
588 	 * dot11 MIB variable for the percentage of the PMK lifetime
589 	 * that should expire before an IEEE 802.1X reauthentication occurs.
590 	 */
591 	unsigned int dot11RSNAConfigPMKReauthThreshold;
592 
593 	/**
594 	 * dot11RSNAConfigSATimeout - Security association timeout
595 	 *
596 	 * dot11 MIB variable for the maximum time a security association
597 	 * shall take to set up (unit: seconds).
598 	 */
599 	unsigned int dot11RSNAConfigSATimeout;
600 
601 	/**
602 	 * update_config - Is wpa_supplicant allowed to update configuration
603 	 *
604 	 * This variable control whether wpa_supplicant is allow to re-write
605 	 * its configuration with wpa_config_write(). If this is zero,
606 	 * configuration data is only changed in memory and the external data
607 	 * is not overriden. If this is non-zero, wpa_supplicant will update
608 	 * the configuration data (e.g., a file) whenever configuration is
609 	 * changed. This update may replace the old configuration which can
610 	 * remove comments from it in case of a text file configuration.
611 	 */
612 	int update_config;
613 
614 	/**
615 	 * blobs - Configuration blobs
616 	 */
617 	struct wpa_config_blob *blobs;
618 
619 	/**
620 	 * uuid - Universally Unique IDentifier (UUID; see RFC 4122) for WPS
621 	 */
622 	u8 uuid[16];
623 
624 	/**
625 	 * device_name - Device Name (WPS)
626 	 * User-friendly description of device; up to 32 octets encoded in
627 	 * UTF-8
628 	 */
629 	char *device_name;
630 
631 	/**
632 	 * manufacturer - Manufacturer (WPS)
633 	 * The manufacturer of the device (up to 64 ASCII characters)
634 	 */
635 	char *manufacturer;
636 
637 	/**
638 	 * model_name - Model Name (WPS)
639 	 * Model of the device (up to 32 ASCII characters)
640 	 */
641 	char *model_name;
642 
643 	/**
644 	 * model_number - Model Number (WPS)
645 	 * Additional device description (up to 32 ASCII characters)
646 	 */
647 	char *model_number;
648 
649 	/**
650 	 * serial_number - Serial Number (WPS)
651 	 * Serial number of the device (up to 32 characters)
652 	 */
653 	char *serial_number;
654 
655 	/**
656 	 * device_type - Primary Device Type (WPS)
657 	 */
658 	u8 device_type[WPS_DEV_TYPE_LEN];
659 
660 	/**
661 	 * config_methods - Config Methods
662 	 *
663 	 * This is a space-separated list of supported WPS configuration
664 	 * methods. For example, "label virtual_display virtual_push_button
665 	 * keypad".
666 	 * Available methods: usba ethernet label display ext_nfc_token
667 	 * int_nfc_token nfc_interface push_button keypad
668 	 * virtual_display physical_display
669 	 * virtual_push_button physical_push_button.
670 	 */
671 	char *config_methods;
672 
673 	/**
674 	 * os_version - OS Version (WPS)
675 	 * 4-octet operating system version number
676 	 */
677 	u8 os_version[4];
678 
679 	/**
680 	 * country - Country code
681 	 *
682 	 * This is the ISO/IEC alpha2 country code for which we are operating
683 	 * in
684 	 */
685 	char country[2];
686 
687 	/**
688 	 * wps_cred_processing - Credential processing
689 	 *
690 	 *   0 = process received credentials internally
691 	 *   1 = do not process received credentials; just pass them over
692 	 *	ctrl_iface to external program(s)
693 	 *   2 = process received credentials internally and pass them over
694 	 *	ctrl_iface to external program(s)
695 	 */
696 	int wps_cred_processing;
697 
698 #define MAX_SEC_DEVICE_TYPES 5
699 	/**
700 	 * sec_device_types - Secondary Device Types (P2P)
701 	 */
702 	u8 sec_device_type[MAX_SEC_DEVICE_TYPES][WPS_DEV_TYPE_LEN];
703 	int num_sec_device_types;
704 
705 	int p2p_listen_reg_class;
706 	int p2p_listen_channel;
707 	int p2p_oper_reg_class;
708 	int p2p_oper_channel;
709 	int p2p_go_intent;
710 	char *p2p_ssid_postfix;
711 	int persistent_reconnect;
712 	int p2p_intra_bss;
713 	unsigned int num_p2p_pref_chan;
714 	struct p2p_channel *p2p_pref_chan;
715 	struct wpa_freq_range_list p2p_no_go_freq;
716 	int p2p_add_cli_chan;
717 	int p2p_ignore_shared_freq;
718 	int p2p_optimize_listen_chan;
719 
720 	struct wpabuf *wps_vendor_ext_m1;
721 
722 #define MAX_WPS_VENDOR_EXT 10
723 	/**
724 	 * wps_vendor_ext - Vendor extension attributes in WPS
725 	 */
726 	struct wpabuf *wps_vendor_ext[MAX_WPS_VENDOR_EXT];
727 
728 	/**
729 	 * p2p_group_idle - Maximum idle time in seconds for P2P group
730 	 *
731 	 * This value controls how long a P2P group is maintained after there
732 	 * is no other members in the group. As a GO, this means no associated
733 	 * stations in the group. As a P2P client, this means no GO seen in
734 	 * scan results. The maximum idle time is specified in seconds with 0
735 	 * indicating no time limit, i.e., the P2P group remains in active
736 	 * state indefinitely until explicitly removed. As a P2P client, the
737 	 * maximum idle time of P2P_MAX_CLIENT_IDLE seconds is enforced, i.e.,
738 	 * this parameter is mainly meant for GO use and for P2P client, it can
739 	 * only be used to reduce the default timeout to smaller value. A
740 	 * special value -1 can be used to configure immediate removal of the
741 	 * group for P2P client role on any disconnection after the data
742 	 * connection has been established.
743 	 */
744 	int p2p_group_idle;
745 
746 	/**
747 	 * p2p_go_freq_change_policy - The GO frequency change policy
748 	 *
749 	 * This controls the behavior of the GO when there is a change in the
750 	 * map of the currently used frequencies in case more than one channel
751 	 * is supported.
752 	 *
753 	 * @P2P_GO_FREQ_MOVE_SCM: Prefer working in a single channel mode if
754 	 * possible. In case the GO is the only interface using its frequency
755 	 * and there are other station interfaces on other frequencies, the GO
756 	 * will migrate to one of these frequencies.
757 	 *
758 	 * @P2P_GO_FREQ_MOVE_SCM_PEER_SUPPORTS: Same as P2P_GO_FREQ_MOVE_SCM,
759 	 * but a transition is possible only in case one of the other used
760 	 * frequencies is one of the frequencies in the intersection of the
761 	 * frequency list of the local device and the peer device.
762 	 *
763 	 * @P2P_GO_FREQ_MOVE_STAY: Prefer to stay on the current frequency.
764 	 */
765 	enum {
766 		P2P_GO_FREQ_MOVE_SCM = 0,
767 		P2P_GO_FREQ_MOVE_SCM_PEER_SUPPORTS = 1,
768 		P2P_GO_FREQ_MOVE_STAY = 2,
769 		P2P_GO_FREQ_MOVE_MAX = P2P_GO_FREQ_MOVE_STAY,
770 	} p2p_go_freq_change_policy;
771 
772 #define DEFAULT_P2P_GO_FREQ_MOVE P2P_GO_FREQ_MOVE_STAY
773 
774 	/**
775 	 * p2p_passphrase_len - Passphrase length (8..63) for P2P GO
776 	 *
777 	 * This parameter controls the length of the random passphrase that is
778 	 * generated at the GO.
779 	 */
780 	unsigned int p2p_passphrase_len;
781 
782 	/**
783 	 * bss_max_count - Maximum number of BSS entries to keep in memory
784 	 */
785 	unsigned int bss_max_count;
786 
787 	/**
788 	 * bss_expiration_age - BSS entry age after which it can be expired
789 	 *
790 	 * This value controls the time in seconds after which a BSS entry
791 	 * gets removed if it has not been updated or is not in use.
792 	 */
793 	unsigned int bss_expiration_age;
794 
795 	/**
796 	 * bss_expiration_scan_count - Expire BSS after number of scans
797 	 *
798 	 * If the BSS entry has not been seen in this many scans, it will be
799 	 * removed. A value of 1 means that entry is removed after the first
800 	 * scan in which the BSSID is not seen. Larger values can be used
801 	 * to avoid BSS entries disappearing if they are not visible in
802 	 * every scan (e.g., low signal quality or interference).
803 	 */
804 	unsigned int bss_expiration_scan_count;
805 
806 	/**
807 	 * filter_ssids - SSID-based scan result filtering
808 	 *
809 	 *   0 = do not filter scan results
810 	 *   1 = only include configured SSIDs in scan results/BSS table
811 	 */
812 	int filter_ssids;
813 
814 	/**
815 	 * filter_rssi - RSSI-based scan result filtering
816 	 *
817 	 * 0 = do not filter scan results
818 	 * -n = filter scan results below -n dBm
819 	 */
820 	int filter_rssi;
821 
822 	/**
823 	 * max_num_sta - Maximum number of STAs in an AP/P2P GO
824 	 */
825 	unsigned int max_num_sta;
826 
827 	/**
828 	 * freq_list - Array of allowed scan frequencies or %NULL for all
829 	 *
830 	 * This is an optional zero-terminated array of frequencies in
831 	 * megahertz (MHz) to allow for narrowing scanning range.
832 	 */
833 	int *freq_list;
834 
835 	/**
836 	 * scan_cur_freq - Whether to scan only the current channel
837 	 *
838 	 * If true, attempt to scan only the current channel if any other
839 	 * VIFs on this radio are already associated on a particular channel.
840 	 */
841 	int scan_cur_freq;
842 
843 	/**
844 	 * changed_parameters - Bitmap of changed parameters since last update
845 	 */
846 	unsigned int changed_parameters;
847 
848 	/**
849 	 * disassoc_low_ack - Disassocicate stations with massive packet loss
850 	 */
851 	int disassoc_low_ack;
852 
853 	/**
854 	 * interworking - Whether Interworking (IEEE 802.11u) is enabled
855 	 */
856 	int interworking;
857 
858 	/**
859 	 * access_network_type - Access Network Type
860 	 *
861 	 * When Interworking is enabled, scans will be limited to APs that
862 	 * advertise the specified Access Network Type (0..15; with 15
863 	 * indicating wildcard match).
864 	 */
865 	int access_network_type;
866 
867 	/**
868 	 * hessid - Homogenous ESS identifier
869 	 *
870 	 * If this is set (any octet is non-zero), scans will be used to
871 	 * request response only from BSSes belonging to the specified
872 	 * Homogeneous ESS. This is used only if interworking is enabled.
873 	 */
874 	u8 hessid[ETH_ALEN];
875 
876 	/**
877 	 * hs20 - Hotspot 2.0
878 	 */
879 	int hs20;
880 
881 	/**
882 	 * pbc_in_m1 - AP mode WPS probing workaround for PBC with Windows 7
883 	 *
884 	 * Windows 7 uses incorrect way of figuring out AP's WPS capabilities
885 	 * by acting as a Registrar and using M1 from the AP. The config
886 	 * methods attribute in that message is supposed to indicate only the
887 	 * configuration method supported by the AP in Enrollee role, i.e., to
888 	 * add an external Registrar. For that case, PBC shall not be used and
889 	 * as such, the PushButton config method is removed from M1 by default.
890 	 * If pbc_in_m1=1 is included in the configuration file, the PushButton
891 	 * config method is left in M1 (if included in config_methods
892 	 * parameter) to allow Windows 7 to use PBC instead of PIN (e.g., from
893 	 * a label in the AP).
894 	 */
895 	int pbc_in_m1;
896 
897 	/**
898 	 * autoscan - Automatic scan parameters or %NULL if none
899 	 *
900 	 * This is an optional set of parameters for automatic scanning
901 	 * within an interface in following format:
902 	 * <autoscan module name>:<module parameters>
903 	 */
904 	char *autoscan;
905 
906 	/**
907 	 * wps_nfc_pw_from_config - NFC Device Password was read from config
908 	 *
909 	 * This parameter can be determined whether the NFC Device Password was
910 	 * included in the configuration (1) or generated dynamically (0). Only
911 	 * the former case is re-written back to the configuration file.
912 	 */
913 	int wps_nfc_pw_from_config;
914 
915 	/**
916 	 * wps_nfc_dev_pw_id - NFC Device Password ID for password token
917 	 */
918 	int wps_nfc_dev_pw_id;
919 
920 	/**
921 	 * wps_nfc_dh_pubkey - NFC DH Public Key for password token
922 	 */
923 	struct wpabuf *wps_nfc_dh_pubkey;
924 
925 	/**
926 	 * wps_nfc_dh_privkey - NFC DH Private Key for password token
927 	 */
928 	struct wpabuf *wps_nfc_dh_privkey;
929 
930 	/**
931 	 * wps_nfc_dev_pw - NFC Device Password for password token
932 	 */
933 	struct wpabuf *wps_nfc_dev_pw;
934 
935 	/**
936 	 * ext_password_backend - External password backend or %NULL if none
937 	 *
938 	 * format: <backend name>[:<optional backend parameters>]
939 	 */
940 	char *ext_password_backend;
941 
942 	/*
943 	 * p2p_go_max_inactivity - Timeout in seconds to detect STA inactivity
944 	 *
945 	 * This timeout value is used in P2P GO mode to clean up
946 	 * inactive stations.
947 	 * By default: 300 seconds.
948 	 */
949 	int p2p_go_max_inactivity;
950 
951 	struct hostapd_wmm_ac_params wmm_ac_params[4];
952 
953 	/**
954 	 * auto_interworking - Whether to use network selection automatically
955 	 *
956 	 * 0 = do not automatically go through Interworking network selection
957 	 *     (i.e., require explicit interworking_select command for this)
958 	 * 1 = perform Interworking network selection if one or more
959 	 *     credentials have been configured and scan did not find a
960 	 *     matching network block
961 	 */
962 	int auto_interworking;
963 
964 	/**
965 	 * p2p_go_ht40 - Default mode for HT40 enable when operating as GO.
966 	 *
967 	 * This will take effect for p2p_group_add, p2p_connect, and p2p_invite.
968 	 * Note that regulatory constraints and driver capabilities are
969 	 * consulted anyway, so setting it to 1 can't do real harm.
970 	 * By default: 0 (disabled)
971 	 */
972 	int p2p_go_ht40;
973 
974 	/**
975 	 * p2p_go_vht - Default mode for VHT enable when operating as GO
976 	 *
977 	 * This will take effect for p2p_group_add, p2p_connect, and p2p_invite.
978 	 * Note that regulatory constraints and driver capabilities are
979 	 * consulted anyway, so setting it to 1 can't do real harm.
980 	 * By default: 0 (disabled)
981 	 */
982 	int p2p_go_vht;
983 
984 	/**
985 	 * p2p_go_ctwindow - CTWindow to use when operating as GO
986 	 *
987 	 * By default: 0 (no CTWindow). Values 0-127 can be used to indicate
988 	 * the length of the CTWindow in TUs.
989 	 */
990 	int p2p_go_ctwindow;
991 
992 	/**
993 	 * p2p_disabled - Whether P2P operations are disabled for this interface
994 	 */
995 	int p2p_disabled;
996 
997 	/**
998 	 * p2p_no_group_iface - Whether group interfaces can be used
999 	 *
1000 	 * By default, wpa_supplicant will create a separate interface for P2P
1001 	 * group operations if the driver supports this. This functionality can
1002 	 * be disabled by setting this parameter to 1. In that case, the same
1003 	 * interface that was used for the P2P management operations is used
1004 	 * also for the group operation.
1005 	 */
1006 	int p2p_no_group_iface;
1007 
1008 	/**
1009 	 * p2p_cli_probe - Enable/disable P2P CLI probe request handling
1010 	 *
1011 	 * If this parameter is set to 1, a connected P2P Client will receive
1012 	 * and handle Probe Request frames. Setting this parameter to 0
1013 	 * disables this option. Default value: 0.
1014 	 *
1015 	 * Note: Setting this property at run time takes effect on the following
1016 	 * interface state transition to/from the WPA_COMPLETED state.
1017 	 */
1018 	int p2p_cli_probe;
1019 
1020 	/**
1021 	 * okc - Whether to enable opportunistic key caching by default
1022 	 *
1023 	 * By default, OKC is disabled unless enabled by the per-network
1024 	 * proactive_key_caching=1 parameter. okc=1 can be used to change this
1025 	 * default behavior.
1026 	 */
1027 	int okc;
1028 
1029 	/**
1030 	 * pmf - Whether to enable/require PMF by default
1031 	 *
1032 	 * By default, PMF is disabled unless enabled by the per-network
1033 	 * ieee80211w=1 or ieee80211w=2 parameter. pmf=1/2 can be used to change
1034 	 * this default behavior.
1035 	 */
1036 	enum mfp_options pmf;
1037 
1038 	/**
1039 	 * sae_groups - Preference list of enabled groups for SAE
1040 	 *
1041 	 * By default (if this parameter is not set), the mandatory group 19
1042 	 * (ECC group defined over a 256-bit prime order field) is preferred,
1043 	 * but other groups are also enabled. If this parameter is set, the
1044 	 * groups will be tried in the indicated order.
1045 	 */
1046 	int *sae_groups;
1047 
1048 	/**
1049 	 * dtim_period - Default DTIM period in Beacon intervals
1050 	 *
1051 	 * This parameter can be used to set the default value for network
1052 	 * blocks that do not specify dtim_period.
1053 	 */
1054 	int dtim_period;
1055 
1056 	/**
1057 	 * beacon_int - Default Beacon interval in TU
1058 	 *
1059 	 * This parameter can be used to set the default value for network
1060 	 * blocks that do not specify beacon_int.
1061 	 */
1062 	int beacon_int;
1063 
1064 	/**
1065 	 * ap_vendor_elements: Vendor specific elements for Beacon/ProbeResp
1066 	 *
1067 	 * This parameter can be used to define additional vendor specific
1068 	 * elements for Beacon and Probe Response frames in AP/P2P GO mode. The
1069 	 * format for these element(s) is a hexdump of the raw information
1070 	 * elements (id+len+payload for one or more elements).
1071 	 */
1072 	struct wpabuf *ap_vendor_elements;
1073 
1074 	/**
1075 	 * ignore_old_scan_res - Ignore scan results older than request
1076 	 *
1077 	 * The driver may have a cache of scan results that makes it return
1078 	 * information that is older than our scan trigger. This parameter can
1079 	 * be used to configure such old information to be ignored instead of
1080 	 * allowing it to update the internal BSS table.
1081 	 */
1082 	int ignore_old_scan_res;
1083 
1084 	/**
1085 	 * sched_scan_interval -  schedule scan interval
1086 	 */
1087 	unsigned int sched_scan_interval;
1088 
1089 	/**
1090 	 * tdls_external_control - External control for TDLS setup requests
1091 	 *
1092 	 * Enable TDLS mode where external programs are given the control
1093 	 * to specify the TDLS link to get established to the driver. The
1094 	 * driver requests the TDLS setup to the supplicant only for the
1095 	 * specified TDLS peers.
1096 	 */
1097 	int tdls_external_control;
1098 
1099 	u8 ip_addr_go[4];
1100 	u8 ip_addr_mask[4];
1101 	u8 ip_addr_start[4];
1102 	u8 ip_addr_end[4];
1103 
1104 	/**
1105 	 * osu_dir - OSU provider information directory
1106 	 *
1107 	 * If set, allow FETCH_OSU control interface command to be used to fetch
1108 	 * OSU provider information into all APs and store the results in this
1109 	 * directory.
1110 	 */
1111 	char *osu_dir;
1112 
1113 	/**
1114 	 * wowlan_triggers - Wake-on-WLAN triggers
1115 	 *
1116 	 * If set, these wowlan triggers will be configured.
1117 	 */
1118 	char *wowlan_triggers;
1119 
1120 	/**
1121 	 * p2p_search_delay - Extra delay between concurrent search iterations
1122 	 *
1123 	 * Add extra delay (in milliseconds) between search iterations when
1124 	 * there is a concurrent operation to make p2p_find friendlier to
1125 	 * concurrent operations by avoiding it from taking 100% of radio
1126 	 * resources.
1127 	 */
1128 	unsigned int p2p_search_delay;
1129 
1130 	/**
1131 	 * mac_addr - MAC address policy default
1132 	 *
1133 	 * 0 = use permanent MAC address
1134 	 * 1 = use random MAC address for each ESS connection
1135 	 * 2 = like 1, but maintain OUI (with local admin bit set)
1136 	 *
1137 	 * By default, permanent MAC address is used unless policy is changed by
1138 	 * the per-network mac_addr parameter. Global mac_addr=1 can be used to
1139 	 * change this default behavior.
1140 	 */
1141 	int mac_addr;
1142 
1143 	/**
1144 	 * rand_addr_lifetime - Lifetime of random MAC address in seconds
1145 	 */
1146 	unsigned int rand_addr_lifetime;
1147 
1148 	/**
1149 	 * preassoc_mac_addr - Pre-association MAC address policy
1150 	 *
1151 	 * 0 = use permanent MAC address
1152 	 * 1 = use random MAC address
1153 	 * 2 = like 1, but maintain OUI (with local admin bit set)
1154 	 */
1155 	int preassoc_mac_addr;
1156 
1157 	/**
1158 	 * key_mgmt_offload - Use key management offload
1159 	 *
1160 	 * Key management offload should be used if the device supports it.
1161 	 * Key management offload is the capability of a device operating as
1162 	 * a station to do the exchange necessary to establish temporal keys
1163 	 * during initial RSN connection, after roaming, or during a PTK
1164 	 * rekeying operation.
1165 	 */
1166 	int key_mgmt_offload;
1167 
1168 	/**
1169 	 * user_mpm - MPM residency
1170 	 *
1171 	 * 0: MPM lives in driver.
1172 	 * 1: wpa_supplicant handles peering and station allocation.
1173 	 *
1174 	 * If AMPE or SAE is enabled, the MPM is always in userspace.
1175 	 */
1176 	int user_mpm;
1177 
1178 	/**
1179 	 * max_peer_links - Maximum number of peer links
1180 	 *
1181 	 * Maximum number of mesh peering currently maintained by the STA.
1182 	 */
1183 	int max_peer_links;
1184 
1185 	/**
1186 	 * cert_in_cb - Whether to include a peer certificate dump in events
1187 	 *
1188 	 * This controls whether peer certificates for authentication server and
1189 	 * its certificate chain are included in EAP peer certificate events.
1190 	 */
1191 	int cert_in_cb;
1192 
1193 	/**
1194 	 * mesh_max_inactivity - Timeout in seconds to detect STA inactivity
1195 	 *
1196 	 * This timeout value is used in mesh STA to clean up inactive stations.
1197 	 * By default: 300 seconds.
1198 	 */
1199 	int mesh_max_inactivity;
1200 
1201 	/**
1202 	 * dot11RSNASAERetransPeriod - Timeout to retransmit SAE Auth frame
1203 	 *
1204 	 * This timeout value is used in mesh STA to retransmit
1205 	 * SAE Authentication frame.
1206 	 * By default: 1000 milliseconds.
1207 	 */
1208 	int dot11RSNASAERetransPeriod;
1209 
1210 	/**
1211 	 * passive_scan - Whether to force passive scan for network connection
1212 	 *
1213 	 * This parameter can be used to force only passive scanning to be used
1214 	 * for network connection cases. It should be noted that this will slow
1215 	 * down scan operations and reduce likelihood of finding the AP. In
1216 	 * addition, some use cases will override this due to functional
1217 	 * requirements, e.g., for finding an AP that uses hidden SSID
1218 	 * (scan_ssid=1) or P2P device discovery.
1219 	 */
1220 	int passive_scan;
1221 
1222 	/**
1223 	 * reassoc_same_bss_optim - Whether to optimize reassoc-to-same-BSS
1224 	 */
1225 	int reassoc_same_bss_optim;
1226 
1227 	/**
1228 	 * wps_priority - Priority for the networks added through WPS
1229 	 *
1230 	 * This priority value will be set to each network profile that is added
1231 	 * by executing the WPS protocol.
1232 	 */
1233 	int wps_priority;
1234 
1235 	/**
1236 	 * fst_group_id - FST group ID
1237 	 */
1238 	char *fst_group_id;
1239 
1240 	/**
1241 	 * fst_priority - priority of the interface within the FST group
1242 	 */
1243 	int fst_priority;
1244 
1245 	/**
1246 	 * fst_llt - default FST LLT (Link-Lost Timeout) to be used for the
1247 	 * interface.
1248 	 */
1249 	int fst_llt;
1250 };
1251 
1252 
1253 /* Prototypes for common functions from config.c */
1254 
1255 void wpa_config_free(struct wpa_config *ssid);
1256 void wpa_config_free_ssid(struct wpa_ssid *ssid);
1257 void wpa_config_foreach_network(struct wpa_config *config,
1258 				void (*func)(void *, struct wpa_ssid *),
1259 				void *arg);
1260 struct wpa_ssid * wpa_config_get_network(struct wpa_config *config, int id);
1261 struct wpa_ssid * wpa_config_add_network(struct wpa_config *config);
1262 int wpa_config_remove_network(struct wpa_config *config, int id);
1263 void wpa_config_set_network_defaults(struct wpa_ssid *ssid);
1264 int wpa_config_set(struct wpa_ssid *ssid, const char *var, const char *value,
1265 		   int line);
1266 int wpa_config_set_quoted(struct wpa_ssid *ssid, const char *var,
1267 			  const char *value);
1268 int wpa_config_dump_values(struct wpa_config *config, char *buf,
1269 			   size_t buflen);
1270 int wpa_config_get_value(const char *name, struct wpa_config *config,
1271 			 char *buf, size_t buflen);
1272 
1273 char ** wpa_config_get_all(struct wpa_ssid *ssid, int get_keys);
1274 char * wpa_config_get(struct wpa_ssid *ssid, const char *var);
1275 char * wpa_config_get_no_key(struct wpa_ssid *ssid, const char *var);
1276 void wpa_config_update_psk(struct wpa_ssid *ssid);
1277 int wpa_config_add_prio_network(struct wpa_config *config,
1278 				struct wpa_ssid *ssid);
1279 int wpa_config_update_prio_list(struct wpa_config *config);
1280 const struct wpa_config_blob * wpa_config_get_blob(struct wpa_config *config,
1281 						   const char *name);
1282 void wpa_config_set_blob(struct wpa_config *config,
1283 			 struct wpa_config_blob *blob);
1284 void wpa_config_free_blob(struct wpa_config_blob *blob);
1285 int wpa_config_remove_blob(struct wpa_config *config, const char *name);
1286 void wpa_config_flush_blobs(struct wpa_config *config);
1287 
1288 struct wpa_cred * wpa_config_get_cred(struct wpa_config *config, int id);
1289 struct wpa_cred * wpa_config_add_cred(struct wpa_config *config);
1290 int wpa_config_remove_cred(struct wpa_config *config, int id);
1291 void wpa_config_free_cred(struct wpa_cred *cred);
1292 int wpa_config_set_cred(struct wpa_cred *cred, const char *var,
1293 			const char *value, int line);
1294 char * wpa_config_get_cred_no_key(struct wpa_cred *cred, const char *var);
1295 
1296 struct wpa_config * wpa_config_alloc_empty(const char *ctrl_interface,
1297 					   const char *driver_param);
1298 #ifndef CONFIG_NO_STDOUT_DEBUG
1299 void wpa_config_debug_dump_networks(struct wpa_config *config);
1300 #else /* CONFIG_NO_STDOUT_DEBUG */
1301 #define wpa_config_debug_dump_networks(c) do { } while (0)
1302 #endif /* CONFIG_NO_STDOUT_DEBUG */
1303 
1304 
1305 /* Prototypes for common functions from config.c */
1306 int wpa_config_process_global(struct wpa_config *config, char *pos, int line);
1307 
1308 
1309 /* Prototypes for backend specific functions from the selected config_*.c */
1310 
1311 /**
1312  * wpa_config_read - Read and parse configuration database
1313  * @name: Name of the configuration (e.g., path and file name for the
1314  * configuration file)
1315  * @cfgp: Pointer to previously allocated configuration data or %NULL if none
1316  * Returns: Pointer to allocated configuration data or %NULL on failure
1317  *
1318  * This function reads configuration data, parses its contents, and allocates
1319  * data structures needed for storing configuration information. The allocated
1320  * data can be freed with wpa_config_free().
1321  *
1322  * Each configuration backend needs to implement this function.
1323  */
1324 struct wpa_config * wpa_config_read(const char *name, struct wpa_config *cfgp);
1325 
1326 /**
1327  * wpa_config_write - Write or update configuration data
1328  * @name: Name of the configuration (e.g., path and file name for the
1329  * configuration file)
1330  * @config: Configuration data from wpa_config_read()
1331  * Returns: 0 on success, -1 on failure
1332  *
1333  * This function write all configuration data into an external database (e.g.,
1334  * a text file) in a format that can be read with wpa_config_read(). This can
1335  * be used to allow wpa_supplicant to update its configuration, e.g., when a
1336  * new network is added or a password is changed.
1337  *
1338  * Each configuration backend needs to implement this function.
1339  */
1340 int wpa_config_write(const char *name, struct wpa_config *config);
1341 
1342 #endif /* CONFIG_H */
1343