/* * WPA Supplicant / Configuration file structures * Copyright (c) 2003-2012, Jouni Malinen * * 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_P2P_GO_MAX_INACTIVITY (5 * 60) #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" #include "common/ieee802_11_common.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; /** * pcsc - Use PC/SC and SIM/USIM card */ int pcsc; /** * realm - Home Realm for Interworking */ char *realm; /** * username - Username for Interworking network selection */ char *username; /** * password - Password for Interworking network selection */ char *password; /** * ext_password - Whether password is a name for external storage */ int ext_password; /** * ca_cert - CA certificate for Interworking network selection */ char *ca_cert; /** * client_cert - File path to client certificate file (PEM/DER) * * This field is used with Interworking networking selection for a case * where client certificate/private key is used for authentication * (EAP-TLS). Full path to the file should be used since working * directory may change when wpa_supplicant is run in the background. * * Alternatively, a named configuration blob can be used by setting * this to blob://blob_name. */ char *client_cert; /** * private_key - File path to client private key file (PEM/DER/PFX) * * When PKCS#12/PFX file (.p12/.pfx) is used, client_cert should be * commented out. Both the private key and certificate will be read * from the PKCS#12 file in this case. Full path to the file should be * used since working directory may change when wpa_supplicant is run * in the background. * * Windows certificate store can be used by leaving client_cert out and * configuring private_key in one of the following formats: * * cert://substring_to_match * * hash://certificate_thumbprint_in_hex * * For example: private_key="hash://63093aa9c47f56ae88334c7b65a4" * * Note that when running wpa_supplicant as an application, the user * certificate store (My user account) is used, whereas computer store * (Computer account) is used when running wpasvc as a service. * * Alternatively, a named configuration blob can be used by setting * this to blob://blob_name. */ char *private_key; /** * private_key_passwd - Password for private key file */ char *private_key_passwd; /** * imsi - IMSI in | | '-' | format */ char *imsi; /** * milenage - Milenage parameters for SIM/USIM simulator in * :: 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; /** * roaming_consortium - Roaming Consortium OI * * If roaming_consortium_len is non-zero, this field contains the * Roaming Consortium OI that can be used to determine which access * points support authentication with this credential. This is an * alternative to the use of the realm parameter. When using Roaming * Consortium to match the network, the EAP parameters need to be * pre-configured with the credential since the NAI Realm information * may not be available or fetched. */ u8 roaming_consortium[15]; /** * roaming_consortium_len - Length of roaming_consortium */ size_t roaming_consortium_len; /** * eap_method - EAP method to use * * Pre-configured EAP method to use with this credential or %NULL to * indicate no EAP method is selected, i.e., the method will be * selected automatically based on ANQP information. */ struct eap_method_type *eap_method; /** * phase1 - Phase 1 (outer authentication) parameters * * Pre-configured EAP parameters or %NULL. */ char *phase1; /** * phase2 - Phase 2 (inner authentication) parameters * * Pre-configured EAP parameters or %NULL. */ char *phase2; }; #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) #define CFG_CHANGED_P2P_PREF_CHAN BIT(13) #define CFG_CHANGED_EXT_PW_BACKEND BIT(14) /** * 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; /** * disable_scan_offload - Disable automatic offloading of scan requests * * By default, %wpa_supplicant tries to offload scanning if the driver * indicates support for this (sched_scan). This configuration * parameter can be used to disable this offloading mechanism. */ int disable_scan_offload; /** * 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; /** * pcsc_reader - PC/SC reader name prefix * * If not %NULL, PC/SC reader with a name that matches this prefix is * initialized for SIM/USIM access. Empty string can be used to match * the first available reader. */ char *pcsc_reader; /** * pcsc_pin - PIN for USIM, GSM SIM, and smartcards * * This field is used to configure PIN for SIM/USIM for EAP-SIM and * EAP-AKA. If left out, this will be asked through control interface. */ char *pcsc_pin; /** * 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; unsigned int num_p2p_pref_chan; struct p2p_channel *p2p_pref_chan; struct wpabuf *wps_vendor_ext_m1; #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. A * special value -1 can be used to configure immediate removal of the * group for P2P client role on any disconnection after the data * connection has been established. */ 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; /** * filter_rssi - RSSI-based scan result filtering * * 0 = do not filter scan results * -n = filter scan results below -n dBm */ int filter_rssi; /** * 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]; /** * hs20 - Hotspot 2.0 */ int hs20; /** * pbc_in_m1 - AP mode WPS probing workaround for PBC with Windows 7 * * Windows 7 uses incorrect way of figuring out AP's WPS capabilities * by acting as a Registrar and using M1 from the AP. The config * methods attribute in that message is supposed to indicate only the * configuration method supported by the AP in Enrollee role, i.e., to * add an external Registrar. For that case, PBC shall not be used and * as such, the PushButton config method is removed from M1 by default. * If pbc_in_m1=1 is included in the configuration file, the PushButton * config method is left in M1 (if included in config_methods * parameter) to allow Windows 7 to use PBC instead of PIN (e.g., from * a label in the AP). */ int pbc_in_m1; /** * autoscan - Automatic scan parameters or %NULL if none * * This is an optional set of parameters for automatic scanning * within an interface in following format: * : */ char *autoscan; /** * wps_nfc_dev_pw_id - NFC Device Password ID for password token */ int wps_nfc_dev_pw_id; /** * wps_nfc_dh_pubkey - NFC DH Public Key for password token */ struct wpabuf *wps_nfc_dh_pubkey; /** * wps_nfc_dh_pubkey - NFC DH Private Key for password token */ struct wpabuf *wps_nfc_dh_privkey; /** * wps_nfc_dh_pubkey - NFC Device Password for password token */ struct wpabuf *wps_nfc_dev_pw; /** * ext_password_backend - External password backend or %NULL if none * * format: [:] */ char *ext_password_backend; /* * p2p_go_max_inactivity - Timeout in seconds to detect STA inactivity * * This timeout value is used in P2P GO mode to clean up * inactive stations. * By default: 300 seconds. */ int p2p_go_max_inactivity; struct hostapd_wmm_ac_params wmm_ac_params[4]; /** * auto_interworking - Whether to use network selection automatically * * 0 = do not automatically go through Interworking network selection * (i.e., require explicit interworking_select command for this) * 1 = perform Interworking network selection if one or more * credentials have been configured and scan did not find a * matching network block */ int auto_interworking; }; /* 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 */