hostap/wpa_supplicant/config.h
Jouni Malinen 1a712d2fc1 Interworking: Add support for credential priorities
This allows credentials to be set with a specific priority to allow
the automatic network selection behavior to be controlled with user
preferences. The priority values are configured to the network block
and BSS selection will select the network based on priorities from
both pre-configured network blocks and credentials.

Signed-hostap: Jouni Malinen <jouni@qca.qualcomm.com>
2012-02-16 16:37:21 +02:00

614 lines
20 KiB
C

/*
* WPA Supplicant / Configuration file structures
* Copyright (c) 2003-2005, Jouni Malinen <j@w1.fi>
*
* This software may be distributed under the terms of the BSD license.
* See README for more details.
*/
#ifndef CONFIG_H
#define CONFIG_H
#define DEFAULT_EAPOL_VERSION 1
#ifdef CONFIG_NO_SCAN_PROCESSING
#define DEFAULT_AP_SCAN 2
#else /* CONFIG_NO_SCAN_PROCESSING */
#define DEFAULT_AP_SCAN 1
#endif /* CONFIG_NO_SCAN_PROCESSING */
#define DEFAULT_FAST_REAUTH 1
#define DEFAULT_P2P_GO_INTENT 7
#define DEFAULT_P2P_INTRA_BSS 1
#define DEFAULT_BSS_MAX_COUNT 200
#define DEFAULT_BSS_EXPIRATION_AGE 180
#define DEFAULT_BSS_EXPIRATION_SCAN_COUNT 2
#define DEFAULT_MAX_NUM_STA 128
#define DEFAULT_ACCESS_NETWORK_TYPE 15
#include "config_ssid.h"
#include "wps/wps.h"
struct wpa_cred {
/**
* next - Next credential in the list
*
* This pointer can be used to iterate over all credentials. The head
* of this list is stored in the cred field of struct wpa_config.
*/
struct wpa_cred *next;
/**
* id - Unique id for the credential
*
* This identifier is used as a unique identifier for each credential
* block when using the control interface. Each credential is allocated
* an id when it is being created, either when reading the
* configuration file or when a new credential is added through the
* control interface.
*/
int id;
/**
* priority - Priority group
*
* By default, all networks and credentials get the same priority group
* (0). This field can be used to give higher priority for credentials
* (and similarly in struct wpa_ssid for network blocks) to change the
* Interworking automatic networking selection behavior. The matching
* network (based on either an enabled network block or a credential)
* with the highest priority value will be selected.
*/
int priority;
/**
* realm - Home Realm for Interworking
*/
char *realm;
/**
* username - Username for Interworking network selection
*/
char *username;
/**
* password - Password for Interworking network selection
*/
char *password;
/**
* ca_cert - CA certificate for Interworking network selection
*/
char *ca_cert;
/**
* imsi - IMSI in <MCC> | <MNC> | '-' | <MSIN> format
*/
char *imsi;
/**
* milenage - Milenage parameters for SIM/USIM simulator in
* <Ki>:<OPc>:<SQN> format
*/
char *milenage;
/**
* domain - Home service provider FQDN
*
* This is used to compare against the Domain Name List to figure out
* whether the AP is operated by the Home SP.
*/
char *domain;
};
#define CFG_CHANGED_DEVICE_NAME BIT(0)
#define CFG_CHANGED_CONFIG_METHODS BIT(1)
#define CFG_CHANGED_DEVICE_TYPE BIT(2)
#define CFG_CHANGED_OS_VERSION BIT(3)
#define CFG_CHANGED_UUID BIT(4)
#define CFG_CHANGED_COUNTRY BIT(5)
#define CFG_CHANGED_SEC_DEVICE_TYPE BIT(6)
#define CFG_CHANGED_P2P_SSID_POSTFIX BIT(7)
#define CFG_CHANGED_WPS_STRING BIT(8)
#define CFG_CHANGED_P2P_INTRA_BSS BIT(9)
#define CFG_CHANGED_VENDOR_EXTENSION BIT(10)
#define CFG_CHANGED_P2P_LISTEN_CHANNEL BIT(11)
#define CFG_CHANGED_P2P_OPER_CHANNEL BIT(12)
/**
* struct wpa_config - wpa_supplicant configuration data
*
* This data structure is presents the per-interface (radio) configuration
* data. In many cases, there is only one struct wpa_config instance, but if
* more than one network interface is being controlled, one instance is used
* for each.
*/
struct wpa_config {
/**
* ssid - Head of the global network list
*
* This is the head for the list of all the configured networks.
*/
struct wpa_ssid *ssid;
/**
* pssid - Per-priority network lists (in priority order)
*/
struct wpa_ssid **pssid;
/**
* num_prio - Number of different priorities used in the pssid lists
*
* This indicates how many per-priority network lists are included in
* pssid.
*/
int num_prio;
/**
* cred - Head of the credential list
*
* This is the head for the list of all the configured credentials.
*/
struct wpa_cred *cred;
/**
* eapol_version - IEEE 802.1X/EAPOL version number
*
* wpa_supplicant is implemented based on IEEE Std 802.1X-2004 which
* defines EAPOL version 2. However, there are many APs that do not
* handle the new version number correctly (they seem to drop the
* frames completely). In order to make wpa_supplicant interoperate
* with these APs, the version number is set to 1 by default. This
* configuration value can be used to set it to the new version (2).
*/
int eapol_version;
/**
* ap_scan - AP scanning/selection
*
* By default, wpa_supplicant requests driver to perform AP
* scanning and then uses the scan results to select a
* suitable AP. Another alternative is to allow the driver to
* take care of AP scanning and selection and use
* wpa_supplicant just to process EAPOL frames based on IEEE
* 802.11 association information from the driver.
*
* 1: wpa_supplicant initiates scanning and AP selection (default).
*
* 0: Driver takes care of scanning, AP selection, and IEEE 802.11
* association parameters (e.g., WPA IE generation); this mode can
* also be used with non-WPA drivers when using IEEE 802.1X mode;
* do not try to associate with APs (i.e., external program needs
* to control association). This mode must also be used when using
* wired Ethernet drivers.
*
* 2: like 0, but associate with APs using security policy and SSID
* (but not BSSID); this can be used, e.g., with ndiswrapper and NDIS
* drivers to enable operation with hidden SSIDs and optimized roaming;
* in this mode, the network blocks in the configuration are tried
* one by one until the driver reports successful association; each
* network block should have explicit security policy (i.e., only one
* option in the lists) for key_mgmt, pairwise, group, proto variables.
*/
int ap_scan;
/**
* ctrl_interface - Parameters for the control interface
*
* If this is specified, %wpa_supplicant will open a control interface
* that is available for external programs to manage %wpa_supplicant.
* The meaning of this string depends on which control interface
* mechanism is used. For all cases, the existence of this parameter
* in configuration is used to determine whether the control interface
* is enabled.
*
* For UNIX domain sockets (default on Linux and BSD): This is a
* directory that will be created for UNIX domain sockets for listening
* to requests from external programs (CLI/GUI, etc.) for status
* information and configuration. The socket file will be named based
* on the interface name, so multiple %wpa_supplicant processes can be
* run at the same time if more than one interface is used.
* /var/run/wpa_supplicant is the recommended directory for sockets and
* by default, wpa_cli will use it when trying to connect with
* %wpa_supplicant.
*
* Access control for the control interface can be configured
* by setting the directory to allow only members of a group
* to use sockets. This way, it is possible to run
* %wpa_supplicant as root (since it needs to change network
* configuration and open raw sockets) and still allow GUI/CLI
* components to be run as non-root users. However, since the
* control interface can be used to change the network
* configuration, this access needs to be protected in many
* cases. By default, %wpa_supplicant is configured to use gid
* 0 (root). If you want to allow non-root users to use the
* control interface, add a new group and change this value to
* match with that group. Add users that should have control
* interface access to this group.
*
* When configuring both the directory and group, use following format:
* DIR=/var/run/wpa_supplicant GROUP=wheel
* DIR=/var/run/wpa_supplicant GROUP=0
* (group can be either group name or gid)
*
* For UDP connections (default on Windows): The value will be ignored.
* This variable is just used to select that the control interface is
* to be created. The value can be set to, e.g., udp
* (ctrl_interface=udp).
*
* For Windows Named Pipe: This value can be used to set the security
* descriptor for controlling access to the control interface. Security
* descriptor can be set using Security Descriptor String Format (see
* http://msdn.microsoft.com/library/default.asp?url=/library/en-us/secauthz/security/security_descriptor_string_format.asp).
* The descriptor string needs to be prefixed with SDDL=. For example,
* ctrl_interface=SDDL=D: would set an empty DACL (which will reject
* all connections).
*/
char *ctrl_interface;
/**
* ctrl_interface_group - Control interface group (DEPRECATED)
*
* This variable is only used for backwards compatibility. Group for
* UNIX domain sockets should now be specified using GROUP=group in
* ctrl_interface variable.
*/
char *ctrl_interface_group;
/**
* fast_reauth - EAP fast re-authentication (session resumption)
*
* By default, fast re-authentication is enabled for all EAP methods
* that support it. This variable can be used to disable fast
* re-authentication (by setting fast_reauth=0). Normally, there is no
* need to disable fast re-authentication.
*/
int fast_reauth;
/**
* opensc_engine_path - Path to the OpenSSL engine for opensc
*
* This is an OpenSSL specific configuration option for loading OpenSC
* engine (engine_opensc.so); if %NULL, this engine is not loaded.
*/
char *opensc_engine_path;
/**
* pkcs11_engine_path - Path to the OpenSSL engine for PKCS#11
*
* This is an OpenSSL specific configuration option for loading PKCS#11
* engine (engine_pkcs11.so); if %NULL, this engine is not loaded.
*/
char *pkcs11_engine_path;
/**
* pkcs11_module_path - Path to the OpenSSL OpenSC/PKCS#11 module
*
* This is an OpenSSL specific configuration option for configuring
* path to OpenSC/PKCS#11 engine (opensc-pkcs11.so); if %NULL, this
* module is not loaded.
*/
char *pkcs11_module_path;
/**
* driver_param - Driver interface parameters
*
* This text string is passed to the selected driver interface with the
* optional struct wpa_driver_ops::set_param() handler. This can be
* used to configure driver specific options without having to add new
* driver interface functionality.
*/
char *driver_param;
/**
* dot11RSNAConfigPMKLifetime - Maximum lifetime of a PMK
*
* dot11 MIB variable for the maximum lifetime of a PMK in the PMK
* cache (unit: seconds).
*/
unsigned int dot11RSNAConfigPMKLifetime;
/**
* dot11RSNAConfigPMKReauthThreshold - PMK re-authentication threshold
*
* dot11 MIB variable for the percentage of the PMK lifetime
* that should expire before an IEEE 802.1X reauthentication occurs.
*/
unsigned int dot11RSNAConfigPMKReauthThreshold;
/**
* dot11RSNAConfigSATimeout - Security association timeout
*
* dot11 MIB variable for the maximum time a security association
* shall take to set up (unit: seconds).
*/
unsigned int dot11RSNAConfigSATimeout;
/**
* update_config - Is wpa_supplicant allowed to update configuration
*
* This variable control whether wpa_supplicant is allow to re-write
* its configuration with wpa_config_write(). If this is zero,
* configuration data is only changed in memory and the external data
* is not overriden. If this is non-zero, wpa_supplicant will update
* the configuration data (e.g., a file) whenever configuration is
* changed. This update may replace the old configuration which can
* remove comments from it in case of a text file configuration.
*/
int update_config;
/**
* blobs - Configuration blobs
*/
struct wpa_config_blob *blobs;
/**
* uuid - Universally Unique IDentifier (UUID; see RFC 4122) for WPS
*/
u8 uuid[16];
/**
* device_name - Device Name (WPS)
* User-friendly description of device; up to 32 octets encoded in
* UTF-8
*/
char *device_name;
/**
* manufacturer - Manufacturer (WPS)
* The manufacturer of the device (up to 64 ASCII characters)
*/
char *manufacturer;
/**
* model_name - Model Name (WPS)
* Model of the device (up to 32 ASCII characters)
*/
char *model_name;
/**
* model_number - Model Number (WPS)
* Additional device description (up to 32 ASCII characters)
*/
char *model_number;
/**
* serial_number - Serial Number (WPS)
* Serial number of the device (up to 32 characters)
*/
char *serial_number;
/**
* device_type - Primary Device Type (WPS)
*/
u8 device_type[WPS_DEV_TYPE_LEN];
/**
* config_methods - Config Methods
*
* This is a space-separated list of supported WPS configuration
* methods. For example, "label virtual_display virtual_push_button
* keypad".
* Available methods: usba ethernet label display ext_nfc_token
* int_nfc_token nfc_interface push_button keypad
* virtual_display physical_display
* virtual_push_button physical_push_button.
*/
char *config_methods;
/**
* os_version - OS Version (WPS)
* 4-octet operating system version number
*/
u8 os_version[4];
/**
* country - Country code
*
* This is the ISO/IEC alpha2 country code for which we are operating
* in
*/
char country[2];
/**
* wps_cred_processing - Credential processing
*
* 0 = process received credentials internally
* 1 = do not process received credentials; just pass them over
* ctrl_iface to external program(s)
* 2 = process received credentials internally and pass them over
* ctrl_iface to external program(s)
*/
int wps_cred_processing;
#define MAX_SEC_DEVICE_TYPES 5
/**
* sec_device_types - Secondary Device Types (P2P)
*/
u8 sec_device_type[MAX_SEC_DEVICE_TYPES][WPS_DEV_TYPE_LEN];
int num_sec_device_types;
int p2p_listen_reg_class;
int p2p_listen_channel;
int p2p_oper_reg_class;
int p2p_oper_channel;
int p2p_go_intent;
char *p2p_ssid_postfix;
int persistent_reconnect;
int p2p_intra_bss;
#define MAX_WPS_VENDOR_EXT 10
/**
* wps_vendor_ext - Vendor extension attributes in WPS
*/
struct wpabuf *wps_vendor_ext[MAX_WPS_VENDOR_EXT];
/**
* p2p_group_idle - Maximum idle time in seconds for P2P group
*
* This value controls how long a P2P group is maintained after there
* is no other members in the group. As a GO, this means no associated
* stations in the group. As a P2P client, this means no GO seen in
* scan results. The maximum idle time is specified in seconds with 0
* indicating no time limit, i.e., the P2P group remains in active
* state indefinitely until explicitly removed. As a P2P client, the
* maximum idle time of P2P_MAX_CLIENT_IDLE seconds is enforced, i.e.,
* this parameter is mainly meant for GO use and for P2P client, it can
* only be used to reduce the default timeout to smaller value.
*/
unsigned int p2p_group_idle;
/**
* bss_max_count - Maximum number of BSS entries to keep in memory
*/
unsigned int bss_max_count;
/**
* bss_expiration_age - BSS entry age after which it can be expired
*
* This value controls the time in seconds after which a BSS entry
* gets removed if it has not been updated or is not in use.
*/
unsigned int bss_expiration_age;
/**
* bss_expiration_scan_count - Expire BSS after number of scans
*
* If the BSS entry has not been seen in this many scans, it will be
* removed. A value of 1 means that entry is removed after the first
* scan in which the BSSID is not seen. Larger values can be used
* to avoid BSS entries disappearing if they are not visible in
* every scan (e.g., low signal quality or interference).
*/
unsigned int bss_expiration_scan_count;
/**
* filter_ssids - SSID-based scan result filtering
*
* 0 = do not filter scan results
* 1 = only include configured SSIDs in scan results/BSS table
*/
int filter_ssids;
/**
* max_num_sta - Maximum number of STAs in an AP/P2P GO
*/
unsigned int max_num_sta;
/**
* changed_parameters - Bitmap of changed parameters since last update
*/
unsigned int changed_parameters;
/**
* disassoc_low_ack - Disassocicate stations with massive packet loss
*/
int disassoc_low_ack;
/**
* interworking - Whether Interworking (IEEE 802.11u) is enabled
*/
int interworking;
/**
* access_network_type - Access Network Type
*
* When Interworking is enabled, scans will be limited to APs that
* advertise the specified Access Network Type (0..15; with 15
* indicating wildcard match).
*/
int access_network_type;
/**
* hessid - Homogenous ESS identifier
*
* If this is set (any octet is non-zero), scans will be used to
* request response only from BSSes belonging to the specified
* Homogeneous ESS. This is used only if interworking is enabled.
*/
u8 hessid[ETH_ALEN];
};
/* Prototypes for common functions from config.c */
void wpa_config_free(struct wpa_config *ssid);
void wpa_config_free_ssid(struct wpa_ssid *ssid);
void wpa_config_foreach_network(struct wpa_config *config,
void (*func)(void *, struct wpa_ssid *),
void *arg);
struct wpa_ssid * wpa_config_get_network(struct wpa_config *config, int id);
struct wpa_ssid * wpa_config_add_network(struct wpa_config *config);
int wpa_config_remove_network(struct wpa_config *config, int id);
void wpa_config_set_network_defaults(struct wpa_ssid *ssid);
int wpa_config_set(struct wpa_ssid *ssid, const char *var, const char *value,
int line);
int wpa_config_set_quoted(struct wpa_ssid *ssid, const char *var,
const char *value);
char ** wpa_config_get_all(struct wpa_ssid *ssid, int get_keys);
char * wpa_config_get(struct wpa_ssid *ssid, const char *var);
char * wpa_config_get_no_key(struct wpa_ssid *ssid, const char *var);
void wpa_config_update_psk(struct wpa_ssid *ssid);
int wpa_config_add_prio_network(struct wpa_config *config,
struct wpa_ssid *ssid);
int wpa_config_update_prio_list(struct wpa_config *config);
const struct wpa_config_blob * wpa_config_get_blob(struct wpa_config *config,
const char *name);
void wpa_config_set_blob(struct wpa_config *config,
struct wpa_config_blob *blob);
void wpa_config_free_blob(struct wpa_config_blob *blob);
int wpa_config_remove_blob(struct wpa_config *config, const char *name);
struct wpa_cred * wpa_config_get_cred(struct wpa_config *config, int id);
struct wpa_cred * wpa_config_add_cred(struct wpa_config *config);
int wpa_config_remove_cred(struct wpa_config *config, int id);
void wpa_config_free_cred(struct wpa_cred *cred);
int wpa_config_set_cred(struct wpa_cred *cred, const char *var,
const char *value, int line);
struct wpa_config * wpa_config_alloc_empty(const char *ctrl_interface,
const char *driver_param);
#ifndef CONFIG_NO_STDOUT_DEBUG
void wpa_config_debug_dump_networks(struct wpa_config *config);
#else /* CONFIG_NO_STDOUT_DEBUG */
#define wpa_config_debug_dump_networks(c) do { } while (0)
#endif /* CONFIG_NO_STDOUT_DEBUG */
/* Prototypes for common functions from config.c */
int wpa_config_process_global(struct wpa_config *config, char *pos, int line);
/* Prototypes for backend specific functions from the selected config_*.c */
/**
* wpa_config_read - Read and parse configuration database
* @name: Name of the configuration (e.g., path and file name for the
* configuration file)
* Returns: Pointer to allocated configuration data or %NULL on failure
*
* This function reads configuration data, parses its contents, and allocates
* data structures needed for storing configuration information. The allocated
* data can be freed with wpa_config_free().
*
* Each configuration backend needs to implement this function.
*/
struct wpa_config * wpa_config_read(const char *name);
/**
* wpa_config_write - Write or update configuration data
* @name: Name of the configuration (e.g., path and file name for the
* configuration file)
* @config: Configuration data from wpa_config_read()
* Returns: 0 on success, -1 on failure
*
* This function write all configuration data into an external database (e.g.,
* a text file) in a format that can be read with wpa_config_read(). This can
* be used to allow wpa_supplicant to update its configuration, e.g., when a
* new network is added or a password is changed.
*
* Each configuration backend needs to implement this function.
*/
int wpa_config_write(const char *name, struct wpa_config *config);
#endif /* CONFIG_H */