379 lines
11 KiB
C
379 lines
11 KiB
C
/*
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* WPA Supplicant / Network configuration structures
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* Copyright (c) 2003-2008, Jouni Malinen <j@w1.fi>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 2 as
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* published by the Free Software Foundation.
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*
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* Alternatively, this software may be distributed under the terms of BSD
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* license.
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*
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* See README and COPYING for more details.
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*/
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#ifndef CONFIG_SSID_H
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#define CONFIG_SSID_H
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#include "common/defs.h"
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#include "eap_peer/eap_config.h"
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#define MAX_SSID_LEN 32
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#define DEFAULT_EAP_WORKAROUND ((unsigned int) -1)
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#define DEFAULT_EAPOL_FLAGS (EAPOL_FLAG_REQUIRE_KEY_UNICAST | \
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EAPOL_FLAG_REQUIRE_KEY_BROADCAST)
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#define DEFAULT_PROTO (WPA_PROTO_WPA | WPA_PROTO_RSN)
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#define DEFAULT_KEY_MGMT (WPA_KEY_MGMT_PSK | WPA_KEY_MGMT_IEEE8021X)
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#define DEFAULT_PAIRWISE (WPA_CIPHER_CCMP | WPA_CIPHER_TKIP)
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#define DEFAULT_GROUP (WPA_CIPHER_CCMP | WPA_CIPHER_TKIP | \
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WPA_CIPHER_WEP104 | WPA_CIPHER_WEP40)
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#define DEFAULT_FRAGMENT_SIZE 1398
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/**
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* struct wpa_ssid - Network configuration data
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*
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* This structure includes all the configuration variables for a network. This
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* data is included in the per-interface configuration data as an element of
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* the network list, struct wpa_config::ssid. Each network block in the
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* configuration is mapped to a struct wpa_ssid instance.
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*/
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struct wpa_ssid {
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/**
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* next - Next network in global list
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*
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* This pointer can be used to iterate over all networks. The head of
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* this list is stored in the ssid field of struct wpa_config.
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*/
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struct wpa_ssid *next;
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/**
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* pnext - Next network in per-priority list
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*
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* This pointer can be used to iterate over all networks in the same
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* priority class. The heads of these list are stored in the pssid
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* fields of struct wpa_config.
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*/
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struct wpa_ssid *pnext;
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/**
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* id - Unique id for the network
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*
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* This identifier is used as a unique identifier for each network
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* block when using the control interface. Each network is allocated an
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* id when it is being created, either when reading the configuration
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* file or when a new network is added through the control interface.
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*/
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int id;
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/**
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* priority - Priority group
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*
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* By default, all networks will get same priority group (0). If some
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* of the networks are more desirable, this field can be used to change
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* the order in which wpa_supplicant goes through the networks when
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* selecting a BSS. The priority groups will be iterated in decreasing
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* priority (i.e., the larger the priority value, the sooner the
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* network is matched against the scan results). Within each priority
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* group, networks will be selected based on security policy, signal
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* strength, etc.
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*
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* Please note that AP scanning with scan_ssid=1 and ap_scan=2 mode are
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* not using this priority to select the order for scanning. Instead,
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* they try the networks in the order that used in the configuration
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* file.
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*/
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int priority;
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/**
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* ssid - Service set identifier (network name)
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*
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* This is the SSID for the network. For wireless interfaces, this is
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* used to select which network will be used. If set to %NULL (or
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* ssid_len=0), any SSID can be used. For wired interfaces, this must
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* be set to %NULL. Note: SSID may contain any characters, even nul
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* (ASCII 0) and as such, this should not be assumed to be a nul
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* terminated string. ssid_len defines how many characters are valid
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* and the ssid field is not guaranteed to be nul terminated.
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*/
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u8 *ssid;
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/**
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* ssid_len - Length of the SSID
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*/
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size_t ssid_len;
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/**
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* bssid - BSSID
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*
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* If set, this network block is used only when associating with the AP
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* using the configured BSSID
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*/
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u8 bssid[ETH_ALEN];
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/**
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* bssid_set - Whether BSSID is configured for this network
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*/
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int bssid_set;
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/**
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* psk - WPA pre-shared key (256 bits)
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*/
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u8 psk[32];
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/**
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* psk_set - Whether PSK field is configured
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*/
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int psk_set;
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/**
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* passphrase - WPA ASCII passphrase
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*
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* If this is set, psk will be generated using the SSID and passphrase
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* configured for the network. ASCII passphrase must be between 8 and
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* 63 characters (inclusive).
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*/
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char *passphrase;
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/**
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* pairwise_cipher - Bitfield of allowed pairwise ciphers, WPA_CIPHER_*
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*/
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int pairwise_cipher;
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/**
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* group_cipher - Bitfield of allowed group ciphers, WPA_CIPHER_*
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*/
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int group_cipher;
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/**
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* key_mgmt - Bitfield of allowed key management protocols
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*
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* WPA_KEY_MGMT_*
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*/
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int key_mgmt;
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/**
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* proto - Bitfield of allowed protocols, WPA_PROTO_*
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*/
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int proto;
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/**
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* auth_alg - Bitfield of allowed authentication algorithms
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*
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* WPA_AUTH_ALG_*
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*/
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int auth_alg;
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/**
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* scan_ssid - Scan this SSID with Probe Requests
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*
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* scan_ssid can be used to scan for APs using hidden SSIDs.
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* Note: Many drivers do not support this. ap_mode=2 can be used with
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* such drivers to use hidden SSIDs.
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*/
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int scan_ssid;
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#ifdef IEEE8021X_EAPOL
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#define EAPOL_FLAG_REQUIRE_KEY_UNICAST BIT(0)
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#define EAPOL_FLAG_REQUIRE_KEY_BROADCAST BIT(1)
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/**
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* eapol_flags - Bit field of IEEE 802.1X/EAPOL options (EAPOL_FLAG_*)
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*/
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int eapol_flags;
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/**
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* eap - EAP peer configuration for this network
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*/
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struct eap_peer_config eap;
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#endif /* IEEE8021X_EAPOL */
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#define NUM_WEP_KEYS 4
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#define MAX_WEP_KEY_LEN 16
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/**
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* wep_key - WEP keys
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*/
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u8 wep_key[NUM_WEP_KEYS][MAX_WEP_KEY_LEN];
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/**
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* wep_key_len - WEP key lengths
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*/
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size_t wep_key_len[NUM_WEP_KEYS];
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/**
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* wep_tx_keyidx - Default key index for TX frames using WEP
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*/
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int wep_tx_keyidx;
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/**
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* proactive_key_caching - Enable proactive key caching
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*
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* This field can be used to enable proactive key caching which is also
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* known as opportunistic PMKSA caching for WPA2. This is disabled (0)
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* by default. Enable by setting this to 1.
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*
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* Proactive key caching is used to make supplicant assume that the APs
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* are using the same PMK and generate PMKSA cache entries without
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* doing RSN pre-authentication. This requires support from the AP side
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* and is normally used with wireless switches that co-locate the
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* authenticator.
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*/
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int proactive_key_caching;
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/**
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* mixed_cell - Whether mixed cells are allowed
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*
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* This option can be used to configure whether so called mixed cells,
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* i.e., networks that use both plaintext and encryption in the same
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* SSID, are allowed. This is disabled (0) by default. Enable by
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* setting this to 1.
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*/
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int mixed_cell;
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#ifdef IEEE8021X_EAPOL
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/**
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* leap - Number of EAP methods using LEAP
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*
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* This field should be set to 1 if LEAP is enabled. This is used to
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* select IEEE 802.11 authentication algorithm.
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*/
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int leap;
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/**
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* non_leap - Number of EAP methods not using LEAP
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*
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* This field should be set to >0 if any EAP method other than LEAP is
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* enabled. This is used to select IEEE 802.11 authentication
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* algorithm.
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*/
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int non_leap;
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/**
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* eap_workaround - EAP workarounds enabled
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*
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* wpa_supplicant supports number of "EAP workarounds" to work around
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* interoperability issues with incorrectly behaving authentication
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* servers. This is recommended to be enabled by default because some
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* of the issues are present in large number of authentication servers.
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*
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* Strict EAP conformance mode can be configured by disabling
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* workarounds with eap_workaround = 0.
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*/
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unsigned int eap_workaround;
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#endif /* IEEE8021X_EAPOL */
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/**
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* mode - IEEE 802.11 operation mode (Infrastucture/IBSS)
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*
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* 0 = infrastructure (Managed) mode, i.e., associate with an AP.
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*
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* 1 = IBSS (ad-hoc, peer-to-peer)
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*
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* 2 = AP (access point)
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*
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* Note: IBSS can only be used with key_mgmt NONE (plaintext and
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* static WEP) and key_mgmt=WPA-NONE (fixed group key TKIP/CCMP). In
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* addition, ap_scan has to be set to 2 for IBSS. WPA-None requires
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* following network block options: proto=WPA, key_mgmt=WPA-NONE,
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* pairwise=NONE, group=TKIP (or CCMP, but not both), and psk must also
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* be set (either directly or using ASCII passphrase).
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*/
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enum wpas_mode {
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WPAS_MODE_INFRA = 0,
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WPAS_MODE_IBSS = 1,
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WPAS_MODE_AP = 2,
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} mode;
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/**
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* disabled - Whether this network is currently disabled
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*
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* 0 = this network can be used (default).
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* 1 = this network block is disabled (can be enabled through
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* ctrl_iface, e.g., with wpa_cli or wpa_gui).
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*/
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int disabled;
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/**
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* peerkey - Whether PeerKey handshake for direct links is allowed
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*
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* This is only used when both RSN/WPA2 and IEEE 802.11e (QoS) are
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* enabled.
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*
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* 0 = disabled (default)
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* 1 = enabled
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*/
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int peerkey;
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/**
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* id_str - Network identifier string for external scripts
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*
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* This value is passed to external ctrl_iface monitors in
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* WPA_EVENT_CONNECTED event and wpa_cli sets this as WPA_ID_STR
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* environment variable for action scripts.
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*/
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char *id_str;
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#ifdef CONFIG_IEEE80211W
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/**
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* ieee80211w - Whether management frame protection is enabled
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*
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* This value is used to configure policy for management frame
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* protection (IEEE 802.11w). 0 = disabled, 1 = optional, 2 = required.
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*/
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enum mfp_options ieee80211w;
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#endif /* CONFIG_IEEE80211W */
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/**
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* frequency - Channel frequency in megahertz (MHz) for IBSS
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*
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* This value is used to configure the initial channel for IBSS (adhoc)
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* networks, e.g., 2412 = IEEE 802.11b/g channel 1. It is ignored in
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* the infrastructure mode. In addition, this value is only used by the
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* station that creates the IBSS. If an IBSS network with the
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* configured SSID is already present, the frequency of the network
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* will be used instead of this configured value.
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*/
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int frequency;
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/**
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* wpa_ptk_rekey - Maximum lifetime for PTK in seconds
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*
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* This value can be used to enforce rekeying of PTK to mitigate some
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* attacks against TKIP deficiencies.
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*/
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int wpa_ptk_rekey;
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/**
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* scan_freq - Array of frequencies to scan or %NULL for all
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*
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* This is an optional zero-terminated array of frequencies in
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* megahertz (MHz) to include in scan requests when searching for this
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* network. This can be used to speed up scanning when the network is
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* known to not use all possible channels.
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*/
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int *scan_freq;
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/**
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* bgscan - Background scan and roaming parameters or %NULL if none
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*
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* This is an optional set of parameters for background scanning and
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* roaming within a network (ESS) in following format:
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* <bgscan module name>:<module parameters>
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*/
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char *bgscan;
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/**
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* freq_list - Array of allowed frequencies or %NULL for all
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*
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* This is an optional zero-terminated array of frequencies in
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* megahertz (MHz) to allow for selecting the BSS. If set, scan results
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* that do not match any of the specified frequencies are not
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* considered when selecting a BSS.
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*/
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int *freq_list;
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};
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#endif /* CONFIG_SSID_H */
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