wpa_supplicant/wpa_supplicant_i.h

   1 /*
   2  * wpa_supplicant - Internal definitions
   3  * Copyright (c) 2003-2009, Jouni Malinen <j@w1.fi>
   4  *
   5  * This program is free software; you can redistribute it and/or modify
   6  * it under the terms of the GNU General Public License version 2 as
   7  * published by the Free Software Foundation.
   8  *
   9  * Alternatively, this software may be distributed under the terms of BSD
  10  * license.
  11  *
  12  * See README and COPYING for more details.
  13  */
  14
  15 #ifndef WPA_SUPPLICANT_I_H
  16 #define WPA_SUPPLICANT_I_H
  17
  18 #include "utils/list.h"
  19 #include "common/defs.h"
  20
  21 extern const char *wpa_supplicant_version;
  22 extern const char *wpa_supplicant_license;
  23 #ifndef CONFIG_NO_STDOUT_DEBUG
  24 extern const char *wpa_supplicant_full_license1;
  25 extern const char *wpa_supplicant_full_license2;
  26 extern const char *wpa_supplicant_full_license3;
  27 extern const char *wpa_supplicant_full_license4;
  28 extern const char *wpa_supplicant_full_license5;
  29 #endif /* CONFIG_NO_STDOUT_DEBUG */
  30
  31 struct wpa_sm;
  32 struct wpa_supplicant;
  33 struct ibss_rsn;
  34 struct scan_info;
  35 struct wpa_bss;
  36
  37 /*
  38  * Forward declarations of private structures used within the ctrl_iface
  39  * backends. Other parts of wpa_supplicant do not have access to data stored in
  40  * these structures.
  41  */
  42 struct ctrl_iface_priv;
  43 struct ctrl_iface_global_priv;
  44 struct wpas_dbus_priv;
  45
  46 /**
  47  * struct wpa_interface - Parameters for wpa_supplicant_add_iface()
  48  */
  49 struct wpa_interface {
  50         /**
  51          * confname - Configuration name (file or profile) name
  52          *
  53          * This can also be %NULL when a configuration file is not used. In
  54          * that case, ctrl_interface must be set to allow the interface to be
  55          * configured.
  56          */
  57         const char *confname;
  58
  59         /**
  60          * ctrl_interface - Control interface parameter
  61          *
  62          * If a configuration file is not used, this variable can be used to
  63          * set the ctrl_interface parameter that would have otherwise been read
  64          * from the configuration file. If both confname and ctrl_interface are
  65          * set, ctrl_interface is used to override the value from configuration
  66          * file.
  67          */
  68         const char *ctrl_interface;
  69
  70         /**
  71          * driver - Driver interface name, or %NULL to use the default driver
  72          */
  73         const char *driver;
  74
  75         /**
  76          * driver_param - Driver interface parameters
  77          *
  78          * If a configuration file is not used, this variable can be used to
  79          * set the driver_param parameters that would have otherwise been read
  80          * from the configuration file. If both confname and driver_param are
  81          * set, driver_param is used to override the value from configuration
  82          * file.
  83          */
  84         const char *driver_param;
  85
  86         /**
  87          * ifname - Interface name
  88          */
  89         const char *ifname;
  90
  91         /**
  92          * bridge_ifname - Optional bridge interface name
  93          *
  94          * If the driver interface (ifname) is included in a Linux bridge
  95          * device, the bridge interface may need to be used for receiving EAPOL
  96          * frames. This can be enabled by setting this variable to enable
  97          * receiving of EAPOL frames from an additional interface.
  98          */
  99         const char *bridge_ifname;
 100 };
 101
 102 /**
 103  * struct wpa_params - Parameters for wpa_supplicant_init()
 104  */
 105 struct wpa_params {
 106         /**
 107          * daemonize - Run %wpa_supplicant in the background
 108          */
 109         int daemonize;
 110
 111         /**
 112          * wait_for_monitor - Wait for a monitor program before starting
 113          */
 114         int wait_for_monitor;
 115
 116         /**
 117          * pid_file - Path to a PID (process ID) file
 118          *
 119          * If this and daemonize are set, process ID of the background process
 120          * will be written to the specified file.
 121          */
 122         char *pid_file;
 123
 124         /**
 125          * wpa_debug_level - Debugging verbosity level (e.g., MSG_INFO)
 126          */
 127         int wpa_debug_level;
 128
 129         /**
 130          * wpa_debug_show_keys - Whether keying material is included in debug
 131          *
 132          * This parameter can be used to allow keying material to be included
 133          * in debug messages. This is a security risk and this option should
 134          * not be enabled in normal configuration. If needed during
 135          * development or while troubleshooting, this option can provide more
 136          * details for figuring out what is happening.
 137          */
 138         int wpa_debug_show_keys;
 139
 140         /**
 141          * wpa_debug_timestamp - Whether to include timestamp in debug messages
 142          */
 143         int wpa_debug_timestamp;
 144
 145         /**
 146          * ctrl_interface - Global ctrl_iface path/parameter
 147          */
 148         char *ctrl_interface;
 149
 150         /**
 151          * dbus_ctrl_interface - Enable the DBus control interface
 152          */
 153         int dbus_ctrl_interface;
 154
 155         /**
 156          * wpa_debug_file_path - Path of debug file or %NULL to use stdout
 157          */
 158         const char *wpa_debug_file_path;
 159
 160         /**
 161          * wpa_debug_syslog - Enable log output through syslog
 162          */
 163         int wpa_debug_syslog;
 164
 165         /**
 166          * override_driver - Optional driver parameter override
 167          *
 168          * This parameter can be used to override the driver parameter in
 169          * dynamic interface addition to force a specific driver wrapper to be
 170          * used instead.
 171          */
 172         char *override_driver;
 173
 174         /**
 175          * override_ctrl_interface - Optional ctrl_interface override
 176          *
 177          * This parameter can be used to override the ctrl_interface parameter
 178          * in dynamic interface addition to force a control interface to be
 179          * created.
 180          */
 181         char *override_ctrl_interface;
 182 };
 183
 184 /**
 185  * struct wpa_global - Internal, global data for all %wpa_supplicant interfaces
 186  *
 187  * This structure is initialized by calling wpa_supplicant_init() when starting
 188  * %wpa_supplicant.
 189  */
 190 struct wpa_global {
 191         struct wpa_supplicant *ifaces;
 192         struct wpa_params params;
 193         struct ctrl_iface_global_priv *ctrl_iface;
 194         struct wpas_dbus_priv *dbus;
 195         void **drv_priv;
 196         size_t drv_count;
 197 };
 198
 199
 200 struct wpa_client_mlme {
 201 #ifdef CONFIG_CLIENT_MLME
 202         enum {
 203                 IEEE80211_DISABLED, IEEE80211_AUTHENTICATE,
 204                 IEEE80211_ASSOCIATE, IEEE80211_ASSOCIATED,
 205                 IEEE80211_IBSS_SEARCH, IEEE80211_IBSS_JOINED
 206         } state;
 207         u8 prev_bssid[ETH_ALEN];
 208         u8 ssid[32];
 209         size_t ssid_len;
 210         u16 aid;
 211         u16 ap_capab, capab;
 212         u8 *extra_ie; /* to be added to the end of AssocReq */
 213         size_t extra_ie_len;
 214         u8 *extra_probe_ie; /* to be added to the end of ProbeReq */
 215         size_t extra_probe_ie_len;
 216         enum wpa_key_mgmt key_mgmt;
 217
 218         /* The last AssocReq/Resp IEs */
 219         u8 *assocreq_ies, *assocresp_ies;
 220         size_t assocreq_ies_len, assocresp_ies_len;
 221
 222         int auth_tries, assoc_tries;
 223
 224         unsigned int ssid_set:1;
 225         unsigned int bssid_set:1;
 226         unsigned int prev_bssid_set:1;
 227         unsigned int authenticated:1;
 228         unsigned int associated:1;
 229         unsigned int probereq_poll:1;
 230         unsigned int use_protection:1;
 231         unsigned int create_ibss:1;
 232         unsigned int mixed_cell:1;
 233         unsigned int wmm_enabled:1;
 234
 235         struct os_time last_probe;
 236
 237         unsigned int auth_algs; /* bitfield of allowed auth algs
 238                                  * (WPA_AUTH_ALG_*) */
 239         int auth_alg; /* currently used IEEE 802.11 authentication algorithm */
 240         int auth_transaction;
 241
 242         struct os_time ibss_join_req;
 243         u8 *probe_resp; /* ProbeResp template for IBSS */
 244         size_t probe_resp_len;
 245         u32 supp_rates_bits;
 246
 247         int wmm_last_param_set;
 248
 249         int sta_scanning;
 250         int scan_hw_mode_idx;
 251         int scan_channel_idx;
 252         enum { SCAN_SET_CHANNEL, SCAN_SEND_PROBE } scan_state;
 253         struct os_time last_scan_completed;
 254         int scan_oper_channel;
 255         int scan_oper_freq;
 256         int scan_oper_phymode;
 257         u8 scan_ssid[32];
 258         size_t scan_ssid_len;
 259         int scan_skip_11b;
 260         int *scan_freqs;
 261
 262         struct ieee80211_sta_bss *sta_bss_list;
 263 #define STA_HASH_SIZE 256
 264 #define STA_HASH(sta) (sta[5])
 265         struct ieee80211_sta_bss *sta_bss_hash[STA_HASH_SIZE];
 266
 267         int cts_protect_erp_frames;
 268
 269         enum hostapd_hw_mode phymode; /* current mode */
 270         struct hostapd_hw_modes *modes;
 271         size_t num_modes;
 272         unsigned int hw_modes; /* bitfield of allowed hardware modes;
 273                                 * (1 << HOSTAPD_MODE_*) */
 274         int num_curr_rates;
 275         int *curr_rates;
 276         int freq; /* The current frequency in MHz */
 277         int channel; /* The current IEEE 802.11 channel number */
 278
 279 #ifdef CONFIG_IEEE80211R
 280         u8 current_md[6];
 281         u8 *ft_ies;
 282         size_t ft_ies_len;
 283 #endif /* CONFIG_IEEE80211R */
 284
 285 #else /* CONFIG_CLIENT_MLME */
 286         int dummy; /* to keep MSVC happy */
 287 #endif /* CONFIG_CLIENT_MLME */
 288 };
 289
 290 /**
 291  * struct wpa_supplicant - Internal data for wpa_supplicant interface
 292  *
 293  * This structure contains the internal data for core wpa_supplicant code. This
 294  * should be only used directly from the core code. However, a pointer to this
 295  * data is used from other files as an arbitrary context pointer in calls to
 296  * core functions.
 297  */
 298 struct wpa_supplicant {
 299         struct wpa_global *global;
 300         struct wpa_supplicant *next;
 301         struct l2_packet_data *l2;
 302         struct l2_packet_data *l2_br;
 303         unsigned char own_addr[ETH_ALEN];
 304         char ifname[100];
 305 #ifdef CONFIG_CTRL_IFACE_DBUS
 306         char *dbus_path;
 307 #endif /* CONFIG_CTRL_IFACE_DBUS */
 308 #ifdef CONFIG_CTRL_IFACE_DBUS_NEW
 309         char *dbus_new_path;
 310 #endif /* CONFIG_CTRL_IFACE_DBUS_NEW */
 311         char bridge_ifname[16];
 312
 313         char *confname;
 314         struct wpa_config *conf;
 315         int countermeasures;
 316         os_time_t last_michael_mic_error;
 317         u8 bssid[ETH_ALEN];
 318         u8 pending_bssid[ETH_ALEN]; /* If wpa_state == WPA_ASSOCIATING, this
 319                                      * field contains the targer BSSID. */
 320         int reassociate; /* reassociation requested */
 321         int disconnected; /* all connections disabled; i.e., do no reassociate
 322                            * before this has been cleared */
 323         struct wpa_ssid *current_ssid;
 324         struct wpa_bss *current_bss;
 325         int ap_ies_from_associnfo;
 326         unsigned int assoc_freq;
 327
 328         /* Selected configuration (based on Beacon/ProbeResp WPA IE) */
 329         int pairwise_cipher;
 330         int group_cipher;
 331         int key_mgmt;
 332         int mgmt_group_cipher;
 333
 334         void *drv_priv; /* private data used by driver_ops */
 335         void *global_drv_priv;
 336
 337         struct wpa_ssid *prev_scan_ssid; /* previously scanned SSID;
 338                                           * NULL = not yet initialized (start
 339                                           * with wildcard SSID)
 340                                           * WILDCARD_SSID_SCAN = wildcard
 341                                           * SSID was used in the previous scan
 342                                           */
 343 #define WILDCARD_SSID_SCAN ((struct wpa_ssid *) 1)
 344
 345         struct dl_list bss; /* struct wpa_bss::list */
 346         struct dl_list bss_id; /* struct wpa_bss::list_id */
 347         size_t num_bss;
 348         unsigned int bss_update_idx;
 349         unsigned int bss_next_id;
 350
 351         struct wpa_driver_ops *driver;
 352         int interface_removed; /* whether the network interface has been
 353                                 * removed */
 354         struct wpa_sm *wpa;
 355         struct eapol_sm *eapol;
 356
 357         struct ctrl_iface_priv *ctrl_iface;
 358
 359         enum wpa_states wpa_state;
 360         int scanning;
 361         int new_connection;
 362         int reassociated_connection;
 363
 364         int eapol_received; /* number of EAPOL packets received after the
 365                              * previous association event */
 366
 367         struct scard_data *scard;
 368
 369         unsigned char last_eapol_src[ETH_ALEN];
 370
 371         int keys_cleared;
 372
 373         struct wpa_blacklist *blacklist;
 374
 375         int scan_req; /* manual scan request; this forces a scan even if there
 376                        * are no enabled networks in the configuration */
 377         int scan_res_tried; /* whether ap_scan=1 mode has tried to fetch scan
 378                              * results without a new scan request; this is used
 379                              * to speed up the first association if the driver
 380                              * has already available scan results. */
 381         int scan_runs; /* number of scan runs since WPS was started */
 382
 383         struct wpa_client_mlme mlme;
 384         unsigned int drv_flags;
 385         int max_scan_ssids;
 386
 387         int pending_mic_error_report;
 388         int pending_mic_error_pairwise;
 389         int mic_errors_seen; /* Michael MIC errors with the current PTK */
 390
 391         struct wps_context *wps;
 392         int wps_success; /* WPS success event received */
 393         struct wps_er *wps_er;
 394         int blacklist_cleared;
 395
 396         struct wpabuf *pending_eapol_rx;
 397         struct os_time pending_eapol_rx_time;
 398         u8 pending_eapol_rx_src[ETH_ALEN];
 399
 400         struct ibss_rsn *ibss_rsn;
 401
 402 #ifdef CONFIG_SME
 403         struct {
 404                 u8 ssid[32];
 405                 size_t ssid_len;
 406                 int freq;
 407                 u8 assoc_req_ie[80];
 408                 size_t assoc_req_ie_len;
 409                 int mfp;
 410                 int ft_used;
 411                 u8 mobility_domain[2];
 412                 u8 *ft_ies;
 413                 size_t ft_ies_len;
 414                 u8 prev_bssid[ETH_ALEN];
 415                 int prev_bssid_set;
 416         } sme;
 417 #endif /* CONFIG_SME */
 418
 419 #ifdef CONFIG_AP
 420         struct hostapd_iface *ap_iface;
 421 #endif /* CONFIG_AP */
 422
 423         struct wpa_ssid *bgscan_ssid;
 424         const struct bgscan_ops *bgscan;
 425         void *bgscan_priv;
 426 };
 427
 428
 429 /* wpa_supplicant.c */
 430 int wpa_set_wep_keys(struct wpa_supplicant *wpa_s, struct wpa_ssid *ssid);
 431
 432 int wpa_supplicant_reload_configuration(struct wpa_supplicant *wpa_s);
 433
 434 const char * wpa_supplicant_state_txt(enum wpa_states state);
 435 int wpa_supplicant_driver_init(struct wpa_supplicant *wpa_s);
 436 int wpa_supplicant_set_suites(struct wpa_supplicant *wpa_s,
 437                               struct wpa_bss *bss, struct wpa_ssid *ssid,
 438                               u8 *wpa_ie, size_t *wpa_ie_len);
 439 void wpa_supplicant_associate(struct wpa_supplicant *wpa_s,
 440                               struct wpa_bss *bss,
 441                               struct wpa_ssid *ssid);
 442 void wpa_supplicant_set_non_wpa_policy(struct wpa_supplicant *wpa_s,
 443                                        struct wpa_ssid *ssid);
 444 void wpa_supplicant_initiate_eapol(struct wpa_supplicant *wpa_s);
 445 void wpa_clear_keys(struct wpa_supplicant *wpa_s, const u8 *addr);
 446 void wpa_supplicant_req_auth_timeout(struct wpa_supplicant *wpa_s,
 447                                      int sec, int usec);
 448 void wpa_supplicant_set_state(struct wpa_supplicant *wpa_s,
 449                               enum wpa_states state);
 450 struct wpa_ssid * wpa_supplicant_get_ssid(struct wpa_supplicant *wpa_s);
 451 void wpa_supplicant_cancel_auth_timeout(struct wpa_supplicant *wpa_s);
 452 void wpa_supplicant_deauthenticate(struct wpa_supplicant *wpa_s,
 453                                    int reason_code);
 454 void wpa_supplicant_disassociate(struct wpa_supplicant *wpa_s,
 455                                  int reason_code);
 456
 457 void wpa_supplicant_enable_network(struct wpa_supplicant *wpa_s,
 458                                    struct wpa_ssid *ssid);
 459 void wpa_supplicant_disable_network(struct wpa_supplicant *wpa_s,
 460                                     struct wpa_ssid *ssid);
 461 void wpa_supplicant_select_network(struct wpa_supplicant *wpa_s,
 462                                    struct wpa_ssid *ssid);
 463 int wpa_supplicant_set_ap_scan(struct wpa_supplicant *wpa_s,
 464                                int ap_scan);
 465 int wpa_supplicant_set_debug_params(struct wpa_global *global,
 466                                     int debug_level, int debug_timestamp,
 467                                     int debug_show_keys);
 468
 469 void wpa_show_license(void);
 470
 471 struct wpa_supplicant * wpa_supplicant_add_iface(struct wpa_global *global,
 472                                                  struct wpa_interface *iface);
 473 int wpa_supplicant_remove_iface(struct wpa_global *global,
 474                                 struct wpa_supplicant *wpa_s);
 475 struct wpa_supplicant * wpa_supplicant_get_iface(struct wpa_global *global,
 476                                                  const char *ifname);
 477 struct wpa_global * wpa_supplicant_init(struct wpa_params *params);
 478 int wpa_supplicant_run(struct wpa_global *global);
 479 void wpa_supplicant_deinit(struct wpa_global *global);
 480
 481 int wpa_supplicant_scard_init(struct wpa_supplicant *wpa_s,
 482                               struct wpa_ssid *ssid);
 483 void wpa_supplicant_terminate_proc(struct wpa_global *global);
 484 void wpa_supplicant_rx_eapol(void *ctx, const u8 *src_addr,
 485                              const u8 *buf, size_t len);
 486
 487 /* events.c */
 488 void wpa_supplicant_mark_disassoc(struct wpa_supplicant *wpa_s);
 489
 490 /* eap_register.c */
 491 int eap_register_methods(void);
 492
 493 #endif /* WPA_SUPPLICANT_I_H */