wpa.c File Reference

#include "includes.h"
#include "common.h"
#include "crypto/aes_wrap.h"
#include "crypto/crypto.h"
#include "common/ieee802_11_defs.h"
#include "eapol_supp/eapol_supp_sm.h"
#include "wpa.h"
#include "eloop.h"
#include "preauth.h"
#include "pmksa_cache.h"
#include "wpa_i.h"
#include "wpa_ie.h"
Include dependency graph for wpa.c:
This graph shows which files directly or indirectly include this file:

Go to the source code of this file.

Classes

struct  wpa_gtk_data

Functions

static int ieee80211w_set_keys (struct wpa_sm *sm, struct wpa_eapol_ie_parse *ie)
static int wpa_derive_ptk (struct wpa_sm *sm, const unsigned char *src_addr, const struct wpa_eapol_key *key, struct wpa_ptk *ptk)
static void wpa_eapol_key_dump (const struct wpa_eapol_key *key)
void wpa_eapol_key_send (struct wpa_sm *sm, const u8 *kck, int ver, const u8 *dest, u16 proto, u8 *msg, size_t msg_len, u8 *key_mic)
static void wpa_report_ie_mismatch (struct wpa_sm *sm, const char *reason, const u8 *src_addr, const u8 *wpa_ie, size_t wpa_ie_len, const u8 *rsn_ie, size_t rsn_ie_len)
void wpa_sm_aborted_cached (struct wpa_sm *sm)
void wpa_sm_deinit (struct wpa_sm *sm)
void wpa_sm_drop_sa (struct wpa_sm *sm)
unsigned int wpa_sm_get_param (struct wpa_sm *sm, enum wpa_sm_conf_params param)
int wpa_sm_get_status (struct wpa_sm *sm, char *buf, size_t buflen, int verbose)
int wpa_sm_has_ptk (struct wpa_sm *sm)
struct wpa_sm * wpa_sm_init (struct wpa_sm_ctx *ctx)
void wpa_sm_key_request (struct wpa_sm *sm, int error, int pairwise)
void wpa_sm_notify_assoc (struct wpa_sm *sm, const u8 *bssid)
void wpa_sm_notify_disassoc (struct wpa_sm *sm)
int wpa_sm_parse_own_wpa_ie (struct wpa_sm *sm, struct wpa_ie_data *data)
int wpa_sm_pmksa_cache_list (struct wpa_sm *sm, char *buf, size_t len)
static void wpa_sm_pmksa_free_cb (struct rsn_pmksa_cache_entry *entry, void *ctx, int replace)
static void wpa_sm_rekey_ptk (void *eloop_ctx, void *timeout_ctx)
int wpa_sm_rx_eapol (struct wpa_sm *sm, const u8 *src_addr, const u8 *buf, size_t len)
int wpa_sm_set_ap_rsn_ie (struct wpa_sm *sm, const u8 *ie, size_t len)
int wpa_sm_set_ap_wpa_ie (struct wpa_sm *sm, const u8 *ie, size_t len)
int wpa_sm_set_assoc_wpa_ie (struct wpa_sm *sm, const u8 *ie, size_t len)
int wpa_sm_set_assoc_wpa_ie_default (struct wpa_sm *sm, u8 *wpa_ie, size_t *wpa_ie_len)
void wpa_sm_set_config (struct wpa_sm *sm, struct rsn_supp_config *config)
void wpa_sm_set_eapol (struct wpa_sm *sm, struct eapol_sm *eapol)
void wpa_sm_set_fast_reauth (struct wpa_sm *sm, int fast_reauth)
void wpa_sm_set_ifname (struct wpa_sm *sm, const char *ifname, const char *bridge_ifname)
void wpa_sm_set_own_addr (struct wpa_sm *sm, const u8 *addr)
int wpa_sm_set_param (struct wpa_sm *sm, enum wpa_sm_conf_params param, unsigned int value)
void wpa_sm_set_pmk (struct wpa_sm *sm, const u8 *pmk, size_t pmk_len)
void wpa_sm_set_pmk_from_pmksa (struct wpa_sm *sm)
void wpa_sm_set_scard_ctx (struct wpa_sm *sm, void *scard_ctx)
static void wpa_sm_start_preauth (void *eloop_ctx, void *timeout_ctx)
static int wpa_supplicant_check_group_cipher (int group_cipher, int keylen, int maxkeylen, int *key_rsc_len, enum wpa_alg *alg)
static int wpa_supplicant_decrypt_key_data (struct wpa_sm *sm, struct wpa_eapol_key *key, u16 ver)
static int wpa_supplicant_get_pmk (struct wpa_sm *sm, const unsigned char *src_addr, const u8 *pmkid)
static int wpa_supplicant_gtk_tx_bit_workaround (const struct wpa_sm *sm, int tx)
static int wpa_supplicant_install_gtk (struct wpa_sm *sm, const struct wpa_gtk_data *gd, const u8 *key_rsc)
static int wpa_supplicant_install_ptk (struct wpa_sm *sm, const struct wpa_eapol_key *key)
static void wpa_supplicant_key_neg_complete (struct wpa_sm *sm, const u8 *addr, int secure)
static int wpa_supplicant_pairwise_gtk (struct wpa_sm *sm, const struct wpa_eapol_key *key, const u8 *gtk, size_t gtk_len, int key_info)
static void wpa_supplicant_process_1_of_2 (struct wpa_sm *sm, const unsigned char *src_addr, const struct wpa_eapol_key *key, int extra_len, u16 ver)
static int wpa_supplicant_process_1_of_2_rsn (struct wpa_sm *sm, const u8 *keydata, size_t keydatalen, u16 key_info, struct wpa_gtk_data *gd)
static int wpa_supplicant_process_1_of_2_wpa (struct wpa_sm *sm, const struct wpa_eapol_key *key, size_t keydatalen, int key_info, size_t extra_len, u16 ver, struct wpa_gtk_data *gd)
static void wpa_supplicant_process_1_of_4 (struct wpa_sm *sm, const unsigned char *src_addr, const struct wpa_eapol_key *key, u16 ver)
static void wpa_supplicant_process_3_of_4 (struct wpa_sm *sm, const struct wpa_eapol_key *key, u16 ver)
static int wpa_supplicant_send_2_of_2 (struct wpa_sm *sm, const struct wpa_eapol_key *key, int ver, u16 key_info)
int wpa_supplicant_send_2_of_4 (struct wpa_sm *sm, const unsigned char *dst, const struct wpa_eapol_key *key, int ver, const u8 *nonce, const u8 *wpa_ie, size_t wpa_ie_len, struct wpa_ptk *ptk)
int wpa_supplicant_send_4_of_4 (struct wpa_sm *sm, const unsigned char *dst, const struct wpa_eapol_key *key, u16 ver, u16 key_info, const u8 *kde, size_t kde_len, struct wpa_ptk *ptk)
static int wpa_supplicant_validate_ie (struct wpa_sm *sm, const unsigned char *src_addr, struct wpa_eapol_ie_parse *ie)
static int wpa_supplicant_verify_eapol_key_mic (struct wpa_sm *sm, struct wpa_eapol_key *key, u16 ver, const u8 *buf, size_t len)

Function Documentation

static int ieee80211w_set_keys ( struct wpa_sm *  sm,
struct wpa_eapol_ie_parse *  ie 
) [static]

Definition at line 714 of file wpa.c.

static int wpa_derive_ptk ( struct wpa_sm *  sm,
const unsigned char *  src_addr,
const struct wpa_eapol_key *  key,
struct wpa_ptk *  ptk 
) [static]

Definition at line 338 of file wpa.c.

static void wpa_eapol_key_dump ( const struct wpa_eapol_key *  key  )  [static]

Definition at line 1481 of file wpa.c.

void wpa_eapol_key_send ( struct wpa_sm *  sm,
const u8 *  kck,
int  ver,
const u8 *  dest,
u16  proto,
u8 *  msg,
size_t  msg_len,
u8 *  key_mic 
)

wpa_eapol_key_send - Send WPA/RSN EAPOL-Key message : Pointer to WPA state machine data from wpa_sm_init() : Key Confirmation Key (KCK, part of PTK) : Version field from Key Info : Destination address for the frame : Ethertype (usually ETH_P_EAPOL) : EAPOL-Key message : Length of message : Pointer to the buffer to which the EAPOL-Key MIC is written

Definition at line 42 of file wpa.c.

static void wpa_report_ie_mismatch ( struct wpa_sm *  sm,
const char *  reason,
const u8 *  src_addr,
const u8 *  wpa_ie,
size_t  wpa_ie_len,
const u8 *  rsn_ie,
size_t  rsn_ie_len 
) [static]

Definition at line 755 of file wpa.c.

void wpa_sm_aborted_cached ( struct wpa_sm *  sm  ) 

wpa_sm_aborted_cached - Notify WPA that PMKSA caching was aborted : Pointer to WPA state machine data from wpa_sm_init()

Definition at line 1472 of file wpa.c.

void wpa_sm_deinit ( struct wpa_sm *  sm  ) 

wpa_sm_deinit - Deinitialize WPA state machine : Pointer to WPA state machine data from wpa_sm_init()

Definition at line 1991 of file wpa.c.

void wpa_sm_drop_sa ( struct wpa_sm *  sm  ) 

Definition at line 2542 of file wpa.c.

unsigned int wpa_sm_get_param ( struct wpa_sm *  sm,
enum wpa_sm_conf_params  param 
)

wpa_sm_get_param - Get WPA state machine parameters : Pointer to WPA state machine data from wpa_sm_init()

Parameters:
 Parameter field Returns: Parameter value

Definition at line 2302 of file wpa.c.

int wpa_sm_get_status ( struct wpa_sm *  sm,
char *  buf,
size_t  buflen,
int  verbose 
)

wpa_sm_get_status - Get WPA state machine : Pointer to WPA state machine data from wpa_sm_init() : Buffer for status information : Maximum buffer length : Whether to include verbose status information Returns: Number of bytes written to buf.

Query WPA state machine for status information. This function fills in a text area with current status information. If the buffer (buf) is not large enough, status information will be truncated to fit the buffer.

Definition at line 2346 of file wpa.c.

int wpa_sm_has_ptk ( struct wpa_sm *  sm  ) 

Definition at line 2553 of file wpa.c.

struct wpa_sm* wpa_sm_init ( struct wpa_sm_ctx *  ctx  )  [read]

wpa_sm_init - Initialize WPA state machine : Context pointer for callbacks; this needs to be an allocated buffer Returns: Pointer to the allocated WPA state machine data

This function is used to allocate a new WPA state machine and the returned value is passed to all WPA state machine calls.

Definition at line 1960 of file wpa.c.

void wpa_sm_key_request ( struct wpa_sm *  sm,
int  error,
int  pairwise 
)

wpa_sm_key_request - Send EAPOL-Key Request : Pointer to WPA state machine data from wpa_sm_init() : Indicate whether this is an Michael MIC error report : 1 = error report for pairwise packet, 0 = for group packet

Send an EAPOL-Key Request to the current authenticator. This function is used to request rekeying and it is usually called when a local Michael MIC failure is detected.

Definition at line 85 of file wpa.c.

void wpa_sm_notify_assoc ( struct wpa_sm *  sm,
const u8 *  bssid 
)

wpa_sm_notify_assoc - Notify WPA state machine about association : Pointer to WPA state machine data from wpa_sm_init() : The BSSID of the new association

This function is called to let WPA state machine know that the connection was established.

Definition at line 2018 of file wpa.c.

void wpa_sm_notify_disassoc ( struct wpa_sm *  sm  ) 

wpa_sm_notify_disassoc - Notify WPA state machine about disassociation : Pointer to WPA state machine data from wpa_sm_init()

This function is called to let WPA state machine know that the connection was lost. This will abort any existing pre-authentication session.

Definition at line 2068 of file wpa.c.

int wpa_sm_parse_own_wpa_ie ( struct wpa_sm *  sm,
struct wpa_ie_data *  data 
)

wpa_sm_parse_own_wpa_ie - Parse own WPA/RSN IE : Pointer to WPA state machine data from wpa_sm_init() : Pointer to data area for parsing results Returns: 0 on success, -1 if IE is not known, or -2 on parsing failure

Parse the contents of the own WPA or RSN IE from (Re)AssocReq and write the parsed data into data.

Definition at line 2519 of file wpa.c.

int wpa_sm_pmksa_cache_list ( struct wpa_sm *  sm,
char *  buf,
size_t  len 
)

Definition at line 2532 of file wpa.c.

static void wpa_sm_pmksa_free_cb ( struct rsn_pmksa_cache_entry *  entry,
void *  ctx,
int  replace 
) [static]

Definition at line 1927 of file wpa.c.

static void wpa_sm_rekey_ptk ( void *  eloop_ctx,
void *  timeout_ctx 
) [static]

Definition at line 478 of file wpa.c.

int wpa_sm_rx_eapol ( struct wpa_sm *  sm,
const u8 *  src_addr,
const u8 *  buf,
size_t  len 
)

wpa_sm_rx_eapol - Process received WPA EAPOL frames : Pointer to WPA state machine data from wpa_sm_init() : Source MAC address of the EAPOL packet : Pointer to the beginning of the EAPOL data (EAPOL header) : Length of the EAPOL frame Returns: 1 = WPA EAPOL-Key processed, 0 = not a WPA EAPOL-Key, -1 failure

This function is called for each received EAPOL frame. Other than EAPOL-Key frames can be skipped if filtering is done elsewhere. wpa_sm_rx_eapol() is only processing WPA and WPA2 EAPOL-Key frames.

The received EAPOL-Key packets are validated and valid packets are replied to. In addition, key material (PTK, GTK) is configured at the end of a successful key handshake.

Definition at line 1531 of file wpa.c.

int wpa_sm_set_ap_rsn_ie ( struct wpa_sm *  sm,
const u8 *  ie,
size_t  len 
)

wpa_sm_set_ap_rsn_ie - Set AP RSN IE from Beacon/ProbeResp : Pointer to WPA state machine data from wpa_sm_init() : Pointer to IE data (starting from id) : IE length Returns: 0 on success, -1 on failure

Inform WPA state machine about the RSN IE used in Beacon / Probe Response frame.

Definition at line 2486 of file wpa.c.

int wpa_sm_set_ap_wpa_ie ( struct wpa_sm *  sm,
const u8 *  ie,
size_t  len 
)

wpa_sm_set_ap_wpa_ie - Set AP WPA IE from Beacon/ProbeResp : Pointer to WPA state machine data from wpa_sm_init() : Pointer to IE data (starting from id) : IE length Returns: 0 on success, -1 on failure

Inform WPA state machine about the WPA IE used in Beacon / Probe Response frame.

Definition at line 2452 of file wpa.c.

int wpa_sm_set_assoc_wpa_ie ( struct wpa_sm *  sm,
const u8 *  ie,
size_t  len 
)

wpa_sm_set_assoc_wpa_ie - Set own WPA/RSN IE from (Re)AssocReq : Pointer to WPA state machine data from wpa_sm_init() : Pointer to IE data (starting from id) : IE length Returns: 0 on success, -1 on failure

Inform WPA state machine about the WPA/RSN IE used in (Re)Association Request frame. The IE will be used to override the default value generated with wpa_sm_set_assoc_wpa_ie_default().

Definition at line 2418 of file wpa.c.

int wpa_sm_set_assoc_wpa_ie_default ( struct wpa_sm *  sm,
u8 *  wpa_ie,
size_t *  wpa_ie_len 
)

wpa_sm_set_assoc_wpa_ie_default - Generate own WPA/RSN IE from configuration : Pointer to WPA state machine data from wpa_sm_init() : Pointer to buffer for WPA/RSN IE : Pointer to the length of the wpa_ie buffer Returns: 0 on success, -1 on failure

Definition at line 2373 of file wpa.c.

void wpa_sm_set_config ( struct wpa_sm *  sm,
struct rsn_supp_config *  config 
)

wpa_sm_set_config - Notification of current configration change : Pointer to WPA state machine data from wpa_sm_init() : Pointer to current network configuration

Notify WPA state machine that configuration has changed. config will be stored as a backpointer to network configuration. This can be NULL to clear the stored pointed.

Definition at line 2158 of file wpa.c.

void wpa_sm_set_eapol ( struct wpa_sm *  sm,
struct eapol_sm *  eapol 
)

wpa_sm_set_eapol - Set EAPOL state machine pointer : Pointer to WPA state machine data from wpa_sm_init() : Pointer to EAPOL state machine allocated with eapol_sm_init()

Definition at line 2224 of file wpa.c.

void wpa_sm_set_fast_reauth ( struct wpa_sm *  sm,
int  fast_reauth 
)

wpa_sm_set_fast_reauth - Set fast reauthentication (EAP) enabled/disabled : Pointer to WPA state machine data from wpa_sm_init() : Whether fast reauthentication (EAP) is allowed

Definition at line 2127 of file wpa.c.

void wpa_sm_set_ifname ( struct wpa_sm *  sm,
const char *  ifname,
const char *  bridge_ifname 
)

wpa_sm_set_ifname - Set network interface name : Pointer to WPA state machine data from wpa_sm_init() : Interface name : Optional bridge interface name (for pre-auth)

Definition at line 2209 of file wpa.c.

void wpa_sm_set_own_addr ( struct wpa_sm *  sm,
const u8 *  addr 
)

wpa_sm_set_own_addr - Set own MAC address : Pointer to WPA state machine data from wpa_sm_init() : Own MAC address

Definition at line 2196 of file wpa.c.

int wpa_sm_set_param ( struct wpa_sm *  sm,
enum wpa_sm_conf_params  param,
unsigned int  value 
)

wpa_sm_set_param - Set WPA state machine parameters : Pointer to WPA state machine data from wpa_sm_init()

Parameters:
 Parameter field : Parameter value Returns: 0 on success, -1 on failure

Definition at line 2238 of file wpa.c.

void wpa_sm_set_pmk ( struct wpa_sm *  sm,
const u8 *  pmk,
size_t  pmk_len 
)

wpa_sm_set_pmk - Set PMK : Pointer to WPA state machine data from wpa_sm_init() : The new PMK : The length of the new PMK in bytes

Configure the PMK for WPA state machine.

Definition at line 2084 of file wpa.c.

void wpa_sm_set_pmk_from_pmksa ( struct wpa_sm *  sm  ) 

wpa_sm_set_pmk_from_pmksa - Set PMK based on the current PMKSA : Pointer to WPA state machine data from wpa_sm_init()

Take the PMK from the current PMKSA into use. If no PMKSA is active, the PMK will be cleared.

Definition at line 2107 of file wpa.c.

void wpa_sm_set_scard_ctx ( struct wpa_sm *  sm,
void *  scard_ctx 
)

wpa_sm_set_scard_ctx - Set context pointer for smartcard callbacks : Pointer to WPA state machine data from wpa_sm_init() : Context pointer for smartcard related callback functions

Definition at line 2139 of file wpa.c.

static void wpa_sm_start_preauth ( void *  eloop_ctx,
void *  timeout_ctx 
) [static]

Definition at line 428 of file wpa.c.

static int wpa_supplicant_check_group_cipher ( int  group_cipher,
int  keylen,
int  maxkeylen,
int *  key_rsc_len,
enum wpa_alg *  alg 
) [static]

Definition at line 542 of file wpa.c.

static int wpa_supplicant_decrypt_key_data ( struct wpa_sm *  sm,
struct wpa_eapol_key *  key,
u16  ver 
) [static]

Definition at line 1409 of file wpa.c.

static int wpa_supplicant_get_pmk ( struct wpa_sm *  sm,
const unsigned char *  src_addr,
const u8 *  pmkid 
) [static]

Definition at line 136 of file wpa.c.

static int wpa_supplicant_gtk_tx_bit_workaround ( const struct wpa_sm *  sm,
int  tx 
) [static]

Definition at line 648 of file wpa.c.

static int wpa_supplicant_install_gtk ( struct wpa_sm *  sm,
const struct wpa_gtk_data *  gd,
const u8 *  key_rsc 
) [static]

Definition at line 606 of file wpa.c.

static int wpa_supplicant_install_ptk ( struct wpa_sm *  sm,
const struct wpa_eapol_key *  key 
) [static]

Definition at line 486 of file wpa.c.

static void wpa_supplicant_key_neg_complete ( struct wpa_sm *  sm,
const u8 *  addr,
int  secure 
) [static]

Definition at line 435 of file wpa.c.

static int wpa_supplicant_pairwise_gtk ( struct wpa_sm *  sm,
const struct wpa_eapol_key *  key,
const u8 *  gtk,
size_t  gtk_len,
int  key_info 
) [static]

Definition at line 665 of file wpa.c.

static void wpa_supplicant_process_1_of_2 ( struct wpa_sm *  sm,
const unsigned char *  src_addr,
const struct wpa_eapol_key *  key,
int  extra_len,
u16  ver 
) [static]

Definition at line 1303 of file wpa.c.

static int wpa_supplicant_process_1_of_2_rsn ( struct wpa_sm *  sm,
const u8 *  keydata,
size_t  keydatalen,
u16  key_info,
struct wpa_gtk_data *  gd 
) [static]

Definition at line 1145 of file wpa.c.

static int wpa_supplicant_process_1_of_2_wpa ( struct wpa_sm *  sm,
const struct wpa_eapol_key *  key,
size_t  keydatalen,
int  key_info,
size_t  extra_len,
u16  ver,
struct wpa_gtk_data *  gd 
) [static]

Definition at line 1190 of file wpa.c.

static void wpa_supplicant_process_1_of_4 ( struct wpa_sm *  sm,
const unsigned char *  src_addr,
const struct wpa_eapol_key *  key,
u16  ver 
) [static]

Definition at line 356 of file wpa.c.

static void wpa_supplicant_process_3_of_4 ( struct wpa_sm *  sm,
const struct wpa_eapol_key *  key,
u16  ver 
) [static]

Definition at line 1037 of file wpa.c.

static int wpa_supplicant_send_2_of_2 ( struct wpa_sm *  sm,
const struct wpa_eapol_key *  key,
int  ver,
u16  key_info 
) [static]

Definition at line 1268 of file wpa.c.

int wpa_supplicant_send_2_of_4 ( struct wpa_sm *  sm,
const unsigned char *  dst,
const struct wpa_eapol_key *  key,
int  ver,
const u8 *  nonce,
const u8 *  wpa_ie,
size_t  wpa_ie_len,
struct wpa_ptk *  ptk 
)

wpa_supplicant_send_2_of_4 - Send message 2 of WPA/RSN 4-Way Handshake : Pointer to WPA state machine data from wpa_sm_init() : Destination address for the frame : Pointer to the EAPOL-Key frame header : Version bits from EAPOL-Key Key Info : Nonce value for the EAPOL-Key frame : WPA/RSN IE : Length of the WPA/RSN IE : PTK to use for keyed hash and encryption Returns: 0 on success, -1 on failure

Definition at line 255 of file wpa.c.

int wpa_supplicant_send_4_of_4 ( struct wpa_sm *  sm,
const unsigned char *  dst,
const struct wpa_eapol_key *  key,
u16  ver,
u16  key_info,
const u8 *  kde,
size_t  kde_len,
struct wpa_ptk *  ptk 
)

wpa_supplicant_send_4_of_4 - Send message 4 of WPA/RSN 4-Way Handshake : Pointer to WPA state machine data from wpa_sm_init() : Destination address for the frame : Pointer to the EAPOL-Key frame header : Version bits from EAPOL-Key Key Info : Key Info : KDEs to include the EAPOL-Key frame : Length of KDEs : PTK to use for keyed hash and encryption Returns: 0 on success, -1 on failure

Definition at line 994 of file wpa.c.

static int wpa_supplicant_validate_ie ( struct wpa_sm *  sm,
const unsigned char *  src_addr,
struct wpa_eapol_ie_parse *  ie 
) [static]

Definition at line 922 of file wpa.c.

static int wpa_supplicant_verify_eapol_key_mic ( struct wpa_sm *  sm,
struct wpa_eapol_key *  key,
u16  ver,
const u8 *  buf,
size_t  len 
) [static]

Definition at line 1359 of file wpa.c.

 All Classes Namespaces Files Functions Variables Typedefs Enumerations Enumerator Defines

wpa_supplicant
Author(s): Package maintained by Blaise Gassend
autogenerated on Fri Jan 11 10:05:05 2013