wpa_supplicant/wpa_supplicant_i.h

   1 /*
   2  * wpa_supplicant - Internal definitions
   3  * Copyright (c) 2003-2010, 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 struct wpa_scan_results;
  37 struct hostapd_hw_modes;
  38
  39 /*
  40  * Forward declarations of private structures used within the ctrl_iface
  41  * backends. Other parts of wpa_supplicant do not have access to data stored in
  42  * these structures.
  43  */
  44 struct ctrl_iface_priv;
  45 struct ctrl_iface_global_priv;
  46 struct wpas_dbus_priv;
  47
  48 /**
  49  * struct wpa_interface - Parameters for wpa_supplicant_add_iface()
  50  */
  51 struct wpa_interface {
  52         /**
  53          * confname - Configuration name (file or profile) name
  54          *
  55          * This can also be %NULL when a configuration file is not used. In
  56          * that case, ctrl_interface must be set to allow the interface to be
  57          * configured.
  58          */
  59         const char *confname;
  60
  61         /**
  62          * ctrl_interface - Control interface parameter
  63          *
  64          * If a configuration file is not used, this variable can be used to
  65          * set the ctrl_interface parameter that would have otherwise been read
  66          * from the configuration file. If both confname and ctrl_interface are
  67          * set, ctrl_interface is used to override the value from configuration
  68          * file.
  69          */
  70         const char *ctrl_interface;
  71
  72         /**
  73          * driver - Driver interface name, or %NULL to use the default driver
  74          */
  75         const char *driver;
  76
  77         /**
  78          * driver_param - Driver interface parameters
  79          *
  80          * If a configuration file is not used, this variable can be used to
  81          * set the driver_param parameters that would have otherwise been read
  82          * from the configuration file. If both confname and driver_param are
  83          * set, driver_param is used to override the value from configuration
  84          * file.
  85          */
  86         const char *driver_param;
  87
  88         /**
  89          * ifname - Interface name
  90          */
  91         const char *ifname;
  92
  93         /**
  94          * bridge_ifname - Optional bridge interface name
  95          *
  96          * If the driver interface (ifname) is included in a Linux bridge
  97          * device, the bridge interface may need to be used for receiving EAPOL
  98          * frames. This can be enabled by setting this variable to enable
  99          * receiving of EAPOL frames from an additional interface.
 100          */
 101         const char *bridge_ifname;
 102 };
 103
 104 /**
 105  * struct wpa_params - Parameters for wpa_supplicant_init()
 106  */
 107 struct wpa_params {
 108         /**
 109          * daemonize - Run %wpa_supplicant in the background
 110          */
 111         int daemonize;
 112
 113         /**
 114          * wait_for_monitor - Wait for a monitor program before starting
 115          */
 116         int wait_for_monitor;
 117
 118         /**
 119          * pid_file - Path to a PID (process ID) file
 120          *
 121          * If this and daemonize are set, process ID of the background process
 122          * will be written to the specified file.
 123          */
 124         char *pid_file;
 125
 126         /**
 127          * wpa_debug_level - Debugging verbosity level (e.g., MSG_INFO)
 128          */
 129         int wpa_debug_level;
 130
 131         /**
 132          * wpa_debug_show_keys - Whether keying material is included in debug
 133          *
 134          * This parameter can be used to allow keying material to be included
 135          * in debug messages. This is a security risk and this option should
 136          * not be enabled in normal configuration. If needed during
 137          * development or while troubleshooting, this option can provide more
 138          * details for figuring out what is happening.
 139          */
 140         int wpa_debug_show_keys;
 141
 142         /**
 143          * wpa_debug_timestamp - Whether to include timestamp in debug messages
 144          */
 145         int wpa_debug_timestamp;
 146
 147         /**
 148          * ctrl_interface - Global ctrl_iface path/parameter
 149          */
 150         char *ctrl_interface;
 151
 152         /**
 153          * dbus_ctrl_interface - Enable the DBus control interface
 154          */
 155         int dbus_ctrl_interface;
 156
 157         /**
 158          * wpa_debug_file_path - Path of debug file or %NULL to use stdout
 159          */
 160         const char *wpa_debug_file_path;
 161
 162         /**
 163          * wpa_debug_syslog - Enable log output through syslog
 164          */
 165         int wpa_debug_syslog;
 166
 167         /**
 168          * override_driver - Optional driver parameter override
 169          *
 170          * This parameter can be used to override the driver parameter in
 171          * dynamic interface addition to force a specific driver wrapper to be
 172          * used instead.
 173          */
 174         char *override_driver;
 175
 176         /**
 177          * override_ctrl_interface - Optional ctrl_interface override
 178          *
 179          * This parameter can be used to override the ctrl_interface parameter
 180          * in dynamic interface addition to force a control interface to be
 181          * created.
 182          */
 183         char *override_ctrl_interface;
 184 };
 185
 186 struct p2p_srv_bonjour {
 187         struct dl_list list;
 188         struct wpabuf *query;
 189         struct wpabuf *resp;
 190 };
 191
 192 struct p2p_srv_upnp {
 193         struct dl_list list;
 194         u8 version;
 195         char *service;
 196 };
 197
 198 /**
 199  * struct wpa_global - Internal, global data for all %wpa_supplicant interfaces
 200  *
 201  * This structure is initialized by calling wpa_supplicant_init() when starting
 202  * %wpa_supplicant.
 203  */
 204 struct wpa_global {
 205         struct wpa_supplicant *ifaces;
 206         struct wpa_params params;
 207         struct ctrl_iface_global_priv *ctrl_iface;
 208         struct wpas_dbus_priv *dbus;
 209         void **drv_priv;
 210         size_t drv_count;
 211         struct os_time suspend_time;
 212         struct p2p_data *p2p;
 213         struct wpa_supplicant *p2p_group_formation;
 214         u8 p2p_dev_addr[ETH_ALEN];
 215         struct dl_list p2p_srv_bonjour; /* struct p2p_srv_bonjour */
 216         struct dl_list p2p_srv_upnp; /* struct p2p_srv_upnp */
 217         int p2p_disabled;
 218         int cross_connection;
 219 };
 220
 221
 222 struct wpa_client_mlme {
 223 #ifdef CONFIG_CLIENT_MLME
 224         enum {
 225                 IEEE80211_DISABLED, IEEE80211_AUTHENTICATE,
 226                 IEEE80211_ASSOCIATE, IEEE80211_ASSOCIATED,
 227                 IEEE80211_IBSS_SEARCH, IEEE80211_IBSS_JOINED
 228         } state;
 229         u8 prev_bssid[ETH_ALEN];
 230         u8 ssid[32];
 231         size_t ssid_len;
 232         u16 aid;
 233         u16 ap_capab, capab;
 234         u8 *extra_ie; /* to be added to the end of AssocReq */
 235         size_t extra_ie_len;
 236         u8 *extra_probe_ie; /* to be added to the end of ProbeReq */
 237         size_t extra_probe_ie_len;
 238         enum wpa_key_mgmt key_mgmt;
 239
 240         /* The last AssocReq/Resp IEs */
 241         u8 *assocreq_ies, *assocresp_ies;
 242         size_t assocreq_ies_len, assocresp_ies_len;
 243
 244         int auth_tries, assoc_tries;
 245
 246         unsigned int ssid_set:1;
 247         unsigned int bssid_set:1;
 248         unsigned int prev_bssid_set:1;
 249         unsigned int authenticated:1;
 250         unsigned int associated:1;
 251         unsigned int probereq_poll:1;
 252         unsigned int use_protection:1;
 253         unsigned int create_ibss:1;
 254         unsigned int mixed_cell:1;
 255         unsigned int wmm_enabled:1;
 256
 257         struct os_time last_probe;
 258
 259         unsigned int auth_algs; /* bitfield of allowed auth algs
 260                                  * (WPA_AUTH_ALG_*) */
 261         int auth_alg; /* currently used IEEE 802.11 authentication algorithm */
 262         int auth_transaction;
 263
 264         struct os_time ibss_join_req;
 265         u8 *probe_resp; /* ProbeResp template for IBSS */
 266         size_t probe_resp_len;
 267         u32 supp_rates_bits;
 268
 269         int wmm_last_param_set;
 270
 271         int sta_scanning;
 272         int scan_hw_mode_idx;
 273         int scan_channel_idx;
 274         enum { SCAN_SET_CHANNEL, SCAN_SEND_PROBE } scan_state;
 275         struct os_time last_scan_completed;
 276         int scan_oper_channel;
 277         int scan_oper_freq;
 278         int scan_oper_phymode;
 279         u8 scan_ssid[32];
 280         size_t scan_ssid_len;
 281         int scan_skip_11b;
 282         int *scan_freqs;
 283
 284         struct ieee80211_sta_bss *sta_bss_list;
 285 #define STA_HASH_SIZE 256
 286 #define STA_HASH(sta) (sta[5])
 287         struct ieee80211_sta_bss *sta_bss_hash[STA_HASH_SIZE];
 288
 289         int cts_protect_erp_frames;
 290
 291         enum hostapd_hw_mode phymode; /* current mode */
 292         struct hostapd_hw_modes *modes;
 293         size_t num_modes;
 294         unsigned int hw_modes; /* bitfield of allowed hardware modes;
 295                                 * (1 << HOSTAPD_MODE_*) */
 296         int num_curr_rates;
 297         int *curr_rates;
 298         int freq; /* The current frequency in MHz */
 299         int channel; /* The current IEEE 802.11 channel number */
 300
 301 #ifdef CONFIG_IEEE80211R
 302         u8 current_md[6];
 303         u8 *ft_ies;
 304         size_t ft_ies_len;
 305 #endif /* CONFIG_IEEE80211R */
 306
 307         void (*public_action_cb)(void *ctx, const u8 *buf, size_t len,
 308                                  int freq);
 309         void *public_action_cb_ctx;
 310
 311 #else /* CONFIG_CLIENT_MLME */
 312         int dummy; /* to keep MSVC happy */
 313 #endif /* CONFIG_CLIENT_MLME */
 314 };
 315
 316 /**
 317  * struct wpa_supplicant - Internal data for wpa_supplicant interface
 318  *
 319  * This structure contains the internal data for core wpa_supplicant code. This
 320  * should be only used directly from the core code. However, a pointer to this
 321  * data is used from other files as an arbitrary context pointer in calls to
 322  * core functions.
 323  */
 324 struct wpa_supplicant {
 325         struct wpa_global *global;
 326         struct wpa_supplicant *parent;
 327         struct wpa_supplicant *next;
 328         struct l2_packet_data *l2;
 329         struct l2_packet_data *l2_br;
 330         unsigned char own_addr[ETH_ALEN];
 331         char ifname[100];
 332 #ifdef CONFIG_CTRL_IFACE_DBUS
 333         char *dbus_path;
 334 #endif /* CONFIG_CTRL_IFACE_DBUS */
 335 #ifdef CONFIG_CTRL_IFACE_DBUS_NEW
 336         char *dbus_new_path;
 337 #endif /* CONFIG_CTRL_IFACE_DBUS_NEW */
 338         char bridge_ifname[16];
 339
 340         char *confname;
 341         struct wpa_config *conf;
 342         int countermeasures;
 343         os_time_t last_michael_mic_error;
 344         u8 bssid[ETH_ALEN];
 345         u8 pending_bssid[ETH_ALEN]; /* If wpa_state == WPA_ASSOCIATING, this
 346                                      * field contains the targer BSSID. */
 347         int reassociate; /* reassociation requested */
 348         int disconnected; /* all connections disabled; i.e., do no reassociate
 349                            * before this has been cleared */
 350         struct wpa_ssid *current_ssid;
 351         struct wpa_bss *current_bss;
 352         int ap_ies_from_associnfo;
 353         unsigned int assoc_freq;
 354
 355         /* Selected configuration (based on Beacon/ProbeResp WPA IE) */
 356         int pairwise_cipher;
 357         int group_cipher;
 358         int key_mgmt;
 359         int mgmt_group_cipher;
 360
 361         void *drv_priv; /* private data used by driver_ops */
 362         void *global_drv_priv;
 363
 364         struct wpa_ssid *prev_scan_ssid; /* previously scanned SSID;
 365                                           * NULL = not yet initialized (start
 366                                           * with wildcard SSID)
 367                                           * WILDCARD_SSID_SCAN = wildcard
 368                                           * SSID was used in the previous scan
 369                                           */
 370 #define WILDCARD_SSID_SCAN ((struct wpa_ssid *) 1)
 371
 372         void (*scan_res_handler)(struct wpa_supplicant *wpa_s,
 373                                  struct wpa_scan_results *scan_res);
 374         struct dl_list bss; /* struct wpa_bss::list */
 375         struct dl_list bss_id; /* struct wpa_bss::list_id */
 376         size_t num_bss;
 377         unsigned int bss_update_idx;
 378         unsigned int bss_next_id;
 379
 380         struct wpa_driver_ops *driver;
 381         int interface_removed; /* whether the network interface has been
 382                                 * removed */
 383         struct wpa_sm *wpa;
 384         struct eapol_sm *eapol;
 385
 386         struct ctrl_iface_priv *ctrl_iface;
 387
 388         enum wpa_states wpa_state;
 389         int scanning;
 390         int new_connection;
 391         int reassociated_connection;
 392
 393         int eapol_received; /* number of EAPOL packets received after the
 394                              * previous association event */
 395
 396         struct scard_data *scard;
 397
 398         unsigned char last_eapol_src[ETH_ALEN];
 399
 400         int keys_cleared;
 401
 402         struct wpa_blacklist *blacklist;
 403
 404         int scan_req; /* manual scan request; this forces a scan even if there
 405                        * are no enabled networks in the configuration */
 406         int scan_runs; /* number of scan runs since WPS was started */
 407         int *next_scan_freqs;
 408
 409         struct wpa_client_mlme mlme;
 410         unsigned int drv_flags;
 411         int max_scan_ssids;
 412         unsigned int max_remain_on_chan;
 413         unsigned int max_stations;
 414
 415         int pending_mic_error_report;
 416         int pending_mic_error_pairwise;
 417         int mic_errors_seen; /* Michael MIC errors with the current PTK */
 418
 419         struct wps_context *wps;
 420         int wps_success; /* WPS success event received */
 421         struct wps_er *wps_er;
 422         int blacklist_cleared;
 423
 424         struct wpabuf *pending_eapol_rx;
 425         struct os_time pending_eapol_rx_time;
 426         u8 pending_eapol_rx_src[ETH_ALEN];
 427
 428         struct ibss_rsn *ibss_rsn;
 429
 430         int set_sta_uapsd;
 431         int sta_uapsd;
 432         int set_ap_uapsd;
 433         int ap_uapsd;
 434
 435 #ifdef CONFIG_SME
 436         struct {
 437                 u8 ssid[32];
 438                 size_t ssid_len;
 439                 int freq;
 440                 u8 assoc_req_ie[200];
 441                 size_t assoc_req_ie_len;
 442                 int mfp;
 443                 int ft_used;
 444                 u8 mobility_domain[2];
 445                 u8 *ft_ies;
 446                 size_t ft_ies_len;
 447                 u8 prev_bssid[ETH_ALEN];
 448                 int prev_bssid_set;
 449                 int auth_alg;
 450         } sme;
 451 #endif /* CONFIG_SME */
 452
 453 #ifdef CONFIG_AP
 454         struct hostapd_iface *ap_iface;
 455         void (*ap_configured_cb)(void *ctx, void *data);
 456         void *ap_configured_cb_ctx;
 457         void *ap_configured_cb_data;
 458 #endif /* CONFIG_AP */
 459
 460 #ifdef CONFIG_P2P
 461         struct p2p_go_neg_results *go_params;
 462         int create_p2p_iface;
 463         u8 pending_interface_addr[ETH_ALEN];
 464         char pending_interface_name[IFNAMSIZ];
 465         int pending_interface_type;
 466         int p2p_group_idx;
 467         unsigned int off_channel_freq;
 468         struct wpabuf *pending_action_tx;
 469         u8 pending_action_src[ETH_ALEN];
 470         u8 pending_action_dst[ETH_ALEN];
 471         u8 pending_action_bssid[ETH_ALEN];
 472         unsigned int pending_action_freq;
 473         int pending_action_without_roc;
 474         unsigned int pending_listen_freq;
 475         unsigned int pending_listen_duration;
 476         enum {
 477                 NOT_P2P_GROUP_INTERFACE,
 478                 P2P_GROUP_INTERFACE_PENDING,
 479                 P2P_GROUP_INTERFACE_GO,
 480                 P2P_GROUP_INTERFACE_CLIENT
 481         } p2p_group_interface;
 482         struct p2p_group *p2p_group;
 483         int p2p_long_listen;
 484         char p2p_pin[10];
 485         int p2p_wps_method;
 486         u8 p2p_auth_invite[ETH_ALEN];
 487         int p2p_sd_over_ctrl_iface;
 488         int p2p_in_provisioning;
 489         int pending_invite_ssid_id;
 490         int show_group_started;
 491         u8 go_dev_addr[ETH_ALEN];
 492         int pending_pd_before_join;
 493         u8 pending_join_iface_addr[ETH_ALEN];
 494         u8 pending_join_dev_addr[ETH_ALEN];
 495         int pending_join_wps_method;
 496         int p2p_join_scan_count;
 497         unsigned int roc_waiting_drv_freq;
 498         int force_long_sd;
 499
 500         /*
 501          * Whether cross connection is disallowed by the AP to which this
 502          * interface is associated (only valid if there is an association).
 503          */
 504         int cross_connect_disallowed;
 505
 506         /*
 507          * Whether this P2P group is configured to use cross connection (only
 508          * valid if this is P2P GO interface). The actual cross connect packet
 509          * forwarding may not be configured depending on the uplink status.
 510          */
 511         int cross_connect_enabled;
 512
 513         /* Whether cross connection forwarding is in use at the moment. */
 514         int cross_connect_in_use;
 515
 516         /*
 517          * Uplink interface name for cross connection
 518          */
 519         char cross_connect_uplink[100];
 520
 521         enum {
 522                 P2P_GROUP_REMOVAL_UNKNOWN,
 523                 P2P_GROUP_REMOVAL_REQUESTED,
 524                 P2P_GROUP_REMOVAL_IDLE_TIMEOUT,
 525                 P2P_GROUP_REMOVAL_UNAVAILABLE
 526         } removal_reason;
 527 #endif /* CONFIG_P2P */
 528
 529         struct wpa_ssid *bgscan_ssid;
 530         const struct bgscan_ops *bgscan;
 531         void *bgscan_priv;
 532
 533         int connect_without_scan;
 534
 535         int after_wps;
 536         unsigned int wps_freq;
 537         int wps_fragment_size;
 538         int auto_reconnect_disabled;
 539
 540          /* Channel preferences for AP/P2P GO use */
 541         int best_24_freq;
 542         int best_5_freq;
 543         int best_overall_freq;
 544 };
 545
 546
 547 /* wpa_supplicant.c */
 548 int wpa_set_wep_keys(struct wpa_supplicant *wpa_s, struct wpa_ssid *ssid);
 549
 550 int wpa_supplicant_reload_configuration(struct wpa_supplicant *wpa_s);
 551
 552 const char * wpa_supplicant_state_txt(enum wpa_states state);
 553 int wpa_supplicant_driver_init(struct wpa_supplicant *wpa_s);
 554 int wpa_supplicant_set_suites(struct wpa_supplicant *wpa_s,
 555                               struct wpa_bss *bss, struct wpa_ssid *ssid,
 556                               u8 *wpa_ie, size_t *wpa_ie_len);
 557 void wpa_supplicant_associate(struct wpa_supplicant *wpa_s,
 558                               struct wpa_bss *bss,
 559                               struct wpa_ssid *ssid);
 560 void wpa_supplicant_set_non_wpa_policy(struct wpa_supplicant *wpa_s,
 561                                        struct wpa_ssid *ssid);
 562 void wpa_supplicant_initiate_eapol(struct wpa_supplicant *wpa_s);
 563 void wpa_clear_keys(struct wpa_supplicant *wpa_s, const u8 *addr);
 564 void wpa_supplicant_req_auth_timeout(struct wpa_supplicant *wpa_s,
 565                                      int sec, int usec);
 566 void wpa_supplicant_set_state(struct wpa_supplicant *wpa_s,
 567                               enum wpa_states state);
 568 struct wpa_ssid * wpa_supplicant_get_ssid(struct wpa_supplicant *wpa_s);
 569 void wpa_supplicant_cancel_auth_timeout(struct wpa_supplicant *wpa_s);
 570 void wpa_supplicant_deauthenticate(struct wpa_supplicant *wpa_s,
 571                                    int reason_code);
 572 void wpa_supplicant_disassociate(struct wpa_supplicant *wpa_s,
 573                                  int reason_code);
 574
 575 void wpa_supplicant_enable_network(struct wpa_supplicant *wpa_s,
 576                                    struct wpa_ssid *ssid);
 577 void wpa_supplicant_disable_network(struct wpa_supplicant *wpa_s,
 578                                     struct wpa_ssid *ssid);
 579 void wpa_supplicant_select_network(struct wpa_supplicant *wpa_s,
 580                                    struct wpa_ssid *ssid);
 581 int wpa_supplicant_set_ap_scan(struct wpa_supplicant *wpa_s,
 582                                int ap_scan);
 583 int wpa_supplicant_set_debug_params(struct wpa_global *global,
 584                                     int debug_level, int debug_timestamp,
 585                                     int debug_show_keys);
 586
 587 void wpa_show_license(void);
 588
 589 struct wpa_supplicant * wpa_supplicant_add_iface(struct wpa_global *global,
 590                                                  struct wpa_interface *iface);
 591 int wpa_supplicant_remove_iface(struct wpa_global *global,
 592                                 struct wpa_supplicant *wpa_s);
 593 struct wpa_supplicant * wpa_supplicant_get_iface(struct wpa_global *global,
 594                                                  const char *ifname);
 595 struct wpa_global * wpa_supplicant_init(struct wpa_params *params);
 596 int wpa_supplicant_run(struct wpa_global *global);
 597 void wpa_supplicant_deinit(struct wpa_global *global);
 598
 599 int wpa_supplicant_scard_init(struct wpa_supplicant *wpa_s,
 600                               struct wpa_ssid *ssid);
 601 void wpa_supplicant_terminate_proc(struct wpa_global *global);
 602 void wpa_supplicant_rx_eapol(void *ctx, const u8 *src_addr,
 603                              const u8 *buf, size_t len);
 604 enum wpa_key_mgmt key_mgmt2driver(int key_mgmt);
 605 enum wpa_cipher cipher_suite2driver(int cipher);
 606 void wpa_supplicant_update_config(struct wpa_supplicant *wpa_s);
 607 void wpa_supplicant_clear_status(struct wpa_supplicant *wpa_s);
 608 void ieee80211_sta_free_hw_features(struct hostapd_hw_modes *hw_features,
 609                                     size_t num_hw_features);
 610
 611 /* events.c */
 612 void wpa_supplicant_mark_disassoc(struct wpa_supplicant *wpa_s);
 613 void wpa_supplicant_connect(struct wpa_supplicant *wpa_s,
 614                             struct wpa_bss *selected,
 615                             struct wpa_ssid *ssid);
 616
 617 /* eap_register.c */
 618 int eap_register_methods(void);
 619
 620 #endif /* WPA_SUPPLICANT_I_H */