340 lines
12 KiB
C
340 lines
12 KiB
C
/*
|
|
* WPA Supplicant / Configuration file structures
|
|
* Copyright (c) 2003-2005, Jouni Malinen <j@w1.fi>
|
|
*
|
|
* This program is free software; you can redistribute it and/or modify
|
|
* it under the terms of the GNU General Public License version 2 as
|
|
* published by the Free Software Foundation.
|
|
*
|
|
* Alternatively, this software may be distributed under the terms of BSD
|
|
* license.
|
|
*
|
|
* See README and COPYING for more details.
|
|
*/
|
|
|
|
#ifndef CONFIG_H
|
|
#define CONFIG_H
|
|
|
|
#define DEFAULT_EAPOL_VERSION 1
|
|
#define DEFAULT_AP_SCAN 1
|
|
#define DEFAULT_FAST_REAUTH 1
|
|
|
|
#include "config_ssid.h"
|
|
|
|
/**
|
|
* struct wpa_config_blob - Named configuration blob
|
|
*
|
|
* This data structure is used to provide storage for binary objects to store
|
|
* abstract information like certificates and private keys inlined with the
|
|
* configuration data.
|
|
*/
|
|
struct wpa_config_blob {
|
|
/**
|
|
* name - Blob name
|
|
*/
|
|
char *name;
|
|
|
|
/**
|
|
* data - Pointer to binary data
|
|
*/
|
|
u8 *data;
|
|
|
|
/**
|
|
* len - Length of binary data
|
|
*/
|
|
size_t len;
|
|
|
|
/**
|
|
* next - Pointer to next blob in the configuration
|
|
*/
|
|
struct wpa_config_blob *next;
|
|
};
|
|
|
|
|
|
/**
|
|
* 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;
|
|
|
|
/**
|
|
* 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 existance 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;
|
|
};
|
|
|
|
|
|
/* Prototypes for common functions from config.c */
|
|
|
|
void wpa_config_free(struct wpa_config *ssid);
|
|
void wpa_config_free_ssid(struct wpa_ssid *ssid);
|
|
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);
|
|
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);
|
|
|
|
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_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 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 */
|