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 #include "config_ssid.h"
  21
  22 extern const char *wpa_supplicant_version;
  23 extern const char *wpa_supplicant_license;
  24 #ifndef CONFIG_NO_STDOUT_DEBUG
  25 extern const char *wpa_supplicant_full_license1;
  26 extern const char *wpa_supplicant_full_license2;
  27 extern const char *wpa_supplicant_full_license3;
  28 extern const char *wpa_supplicant_full_license4;
  29 extern const char *wpa_supplicant_full_license5;
  30 #endif /* CONFIG_NO_STDOUT_DEBUG */
  31
  32 struct wpa_sm;
  33 struct wpa_supplicant;
  34 struct ibss_rsn;
  35 struct scan_info;
  36 struct wpa_bss;
  37 struct wpa_scan_results;
  38 struct hostapd_hw_modes;
  39
  40 /*
  41  * Forward declarations of private structures used within the ctrl_iface
  42  * backends. Other parts of wpa_supplicant do not have access to data stored in
  43  * these structures.
  44  */
  45 struct ctrl_iface_priv;
  46 struct ctrl_iface_global_priv;
  47 struct wpas_dbus_priv;
  48
  49 /**
  50  * struct wpa_interface - Parameters for wpa_supplicant_add_iface()
  51  */
  52 struct wpa_interface {
  53         /**
  54          * confname - Configuration name (file or profile) name
  55          *
  56          * This can also be %NULL when a configuration file is not used. In
  57          * that case, ctrl_interface must be set to allow the interface to be
  58          * configured.
  59          */
  60         const char *confname;
  61
  62         /**
  63          * ctrl_interface - Control interface parameter
  64          *
  65          * If a configuration file is not used, this variable can be used to
  66          * set the ctrl_interface parameter that would have otherwise been read
  67          * from the configuration file. If both confname and ctrl_interface are
  68          * set, ctrl_interface is used to override the value from configuration
  69          * file.
  70          */
  71         const char *ctrl_interface;
  72
  73         /**
  74          * driver - Driver interface name, or %NULL to use the default driver
  75          */
  76         const char *driver;
  77
  78         /**
  79          * driver_param - Driver interface parameters
  80          *
  81          * If a configuration file is not used, this variable can be used to
  82          * set the driver_param parameters that would have otherwise been read
  83          * from the configuration file. If both confname and driver_param are
  84          * set, driver_param is used to override the value from configuration
  85          * file.
  86          */
  87         const char *driver_param;
  88
  89         /**
  90          * ifname - Interface name
  91          */
  92         const char *ifname;
  93
  94         /**
  95          * bridge_ifname - Optional bridge interface name
  96          *
  97          * If the driver interface (ifname) is included in a Linux bridge
  98          * device, the bridge interface may need to be used for receiving EAPOL
  99          * frames. This can be enabled by setting this variable to enable
 100          * receiving of EAPOL frames from an additional interface.
 101          */
 102         const char *bridge_ifname;
 103 };
 104
 105 /**
 106  * struct wpa_params - Parameters for wpa_supplicant_init()
 107  */
 108 struct wpa_params {
 109         /**
 110          * daemonize - Run %wpa_supplicant in the background
 111          */
 112         int daemonize;
 113
 114         /**
 115          * wait_for_monitor - Wait for a monitor program before starting
 116          */
 117         int wait_for_monitor;
 118
 119         /**
 120          * pid_file - Path to a PID (process ID) file
 121          *
 122          * If this and daemonize are set, process ID of the background process
 123          * will be written to the specified file.
 124          */
 125         char *pid_file;
 126
 127         /**
 128          * wpa_debug_level - Debugging verbosity level (e.g., MSG_INFO)
 129          */
 130         int wpa_debug_level;
 131
 132         /**
 133          * wpa_debug_show_keys - Whether keying material is included in debug
 134          *
 135          * This parameter can be used to allow keying material to be included
 136          * in debug messages. This is a security risk and this option should
 137          * not be enabled in normal configuration. If needed during
 138          * development or while troubleshooting, this option can provide more
 139          * details for figuring out what is happening.
 140          */
 141         int wpa_debug_show_keys;
 142
 143         /**
 144          * wpa_debug_timestamp - Whether to include timestamp in debug messages
 145          */
 146         int wpa_debug_timestamp;
 147
 148         /**
 149          * ctrl_interface - Global ctrl_iface path/parameter
 150          */
 151         char *ctrl_interface;
 152
 153         /**
 154          * dbus_ctrl_interface - Enable the DBus control interface
 155          */
 156         int dbus_ctrl_interface;
 157
 158         /**
 159          * wpa_debug_file_path - Path of debug file or %NULL to use stdout
 160          */
 161         const char *wpa_debug_file_path;
 162
 163         /**
 164          * wpa_debug_syslog - Enable log output through syslog
 165          */
 166         int wpa_debug_syslog;
 167
 168         /**
 169          * override_driver - Optional driver parameter override
 170          *
 171          * This parameter can be used to override the driver parameter in
 172          * dynamic interface addition to force a specific driver wrapper to be
 173          * used instead.
 174          */
 175         char *override_driver;
 176
 177         /**
 178          * override_ctrl_interface - Optional ctrl_interface override
 179          *
 180          * This parameter can be used to override the ctrl_interface parameter
 181          * in dynamic interface addition to force a control interface to be
 182          * created.
 183          */
 184         char *override_ctrl_interface;
 185
 186         /**
 187          * entropy_file - Optional entropy file
 188          *
 189          * This parameter can be used to configure wpa_supplicant to maintain
 190          * its internal entropy store over restarts.
 191          */
 192         char *entropy_file;
 193 };
 194
 195 struct p2p_srv_bonjour {
 196         struct dl_list list;
 197         struct wpabuf *query;
 198         struct wpabuf *resp;
 199 };
 200
 201 struct p2p_srv_upnp {
 202         struct dl_list list;
 203         u8 version;
 204         char *service;
 205 };
 206
 207 /**
 208  * struct wpa_global - Internal, global data for all %wpa_supplicant interfaces
 209  *
 210  * This structure is initialized by calling wpa_supplicant_init() when starting
 211  * %wpa_supplicant.
 212  */
 213 struct wpa_global {
 214         struct wpa_supplicant *ifaces;
 215         struct wpa_params params;
 216         struct ctrl_iface_global_priv *ctrl_iface;
 217         struct wpas_dbus_priv *dbus;
 218         void **drv_priv;
 219         size_t drv_count;
 220         struct os_time suspend_time;
 221         struct p2p_data *p2p;
 222         struct wpa_supplicant *p2p_group_formation;
 223         u8 p2p_dev_addr[ETH_ALEN];
 224         struct dl_list p2p_srv_bonjour; /* struct p2p_srv_bonjour */
 225         struct dl_list p2p_srv_upnp; /* struct p2p_srv_upnp */
 226         int p2p_disabled;
 227         int cross_connection;
 228 };
 229
 230
 231 enum offchannel_send_action_result {
 232         OFFCHANNEL_SEND_ACTION_SUCCESS /* Frame was send and acknowledged */,
 233         OFFCHANNEL_SEND_ACTION_NO_ACK /* Frame was sent, but not acknowledged
 234                                        */,
 235         OFFCHANNEL_SEND_ACTION_FAILED /* Frame was not sent due to a failure */
 236 };
 237
 238 /**
 239  * struct wpa_supplicant - Internal data for wpa_supplicant interface
 240  *
 241  * This structure contains the internal data for core wpa_supplicant code. This
 242  * should be only used directly from the core code. However, a pointer to this
 243  * data is used from other files as an arbitrary context pointer in calls to
 244  * core functions.
 245  */
 246 struct wpa_supplicant {
 247         struct wpa_global *global;
 248         struct wpa_supplicant *parent;
 249         struct wpa_supplicant *next;
 250         struct l2_packet_data *l2;
 251         struct l2_packet_data *l2_br;
 252         unsigned char own_addr[ETH_ALEN];
 253         char ifname[100];
 254 #ifdef CONFIG_CTRL_IFACE_DBUS
 255         char *dbus_path;
 256 #endif /* CONFIG_CTRL_IFACE_DBUS */
 257 #ifdef CONFIG_CTRL_IFACE_DBUS_NEW
 258         char *dbus_new_path;
 259         char *dbus_groupobj_path;
 260 #endif /* CONFIG_CTRL_IFACE_DBUS_NEW */
 261         char bridge_ifname[16];
 262
 263         char *confname;
 264         struct wpa_config *conf;
 265         int countermeasures;
 266         os_time_t last_michael_mic_error;
 267         u8 bssid[ETH_ALEN];
 268         u8 pending_bssid[ETH_ALEN]; /* If wpa_state == WPA_ASSOCIATING, this
 269                                      * field contains the targer BSSID. */
 270         int reassociate; /* reassociation requested */
 271         int disconnected; /* all connections disabled; i.e., do no reassociate
 272                            * before this has been cleared */
 273         struct wpa_ssid *current_ssid;
 274         struct wpa_bss *current_bss;
 275         int ap_ies_from_associnfo;
 276         unsigned int assoc_freq;
 277
 278         /* Selected configuration (based on Beacon/ProbeResp WPA IE) */
 279         int pairwise_cipher;
 280         int group_cipher;
 281         int key_mgmt;
 282         int wpa_proto;
 283         int mgmt_group_cipher;
 284
 285         void *drv_priv; /* private data used by driver_ops */
 286         void *global_drv_priv;
 287
 288         struct wpa_ssid *prev_scan_ssid; /* previously scanned SSID;
 289                                           * NULL = not yet initialized (start
 290                                           * with wildcard SSID)
 291                                           * WILDCARD_SSID_SCAN = wildcard
 292                                           * SSID was used in the previous scan
 293                                           */
 294 #define WILDCARD_SSID_SCAN ((struct wpa_ssid *) 1)
 295
 296         struct wpa_ssid *prev_sched_ssid; /* last SSID used in sched scan */
 297         int sched_scan_timeout;
 298         int sched_scan_interval;
 299         int first_sched_scan;
 300         int sched_scan_timed_out;
 301
 302         void (*scan_res_handler)(struct wpa_supplicant *wpa_s,
 303                                  struct wpa_scan_results *scan_res);
 304         struct dl_list bss; /* struct wpa_bss::list */
 305         struct dl_list bss_id; /* struct wpa_bss::list_id */
 306         size_t num_bss;
 307         unsigned int bss_update_idx;
 308         unsigned int bss_next_id;
 309
 310         struct wpa_driver_ops *driver;
 311         int interface_removed; /* whether the network interface has been
 312                                 * removed */
 313         struct wpa_sm *wpa;
 314         struct eapol_sm *eapol;
 315
 316         struct ctrl_iface_priv *ctrl_iface;
 317
 318         enum wpa_states wpa_state;
 319         int scanning;
 320         int sched_scanning;
 321         int new_connection;
 322         int reassociated_connection;
 323
 324         int eapol_received; /* number of EAPOL packets received after the
 325                              * previous association event */
 326
 327         struct scard_data *scard;
 328
 329         unsigned char last_eapol_src[ETH_ALEN];
 330
 331         int keys_cleared;
 332
 333         struct wpa_blacklist *blacklist;
 334
 335         int scan_req; /* manual scan request; this forces a scan even if there
 336                        * are no enabled networks in the configuration */
 337         int scan_runs; /* number of scan runs since WPS was started */
 338         int *next_scan_freqs;
 339         int scan_interval; /* time in sec between scans to find suitable AP */
 340
 341         unsigned int drv_flags;
 342         int max_scan_ssids;
 343         int max_sched_scan_ssids;
 344         int sched_scan_supported;
 345         unsigned int max_match_sets;
 346         unsigned int max_remain_on_chan;
 347         unsigned int max_stations;
 348
 349         int pending_mic_error_report;
 350         int pending_mic_error_pairwise;
 351         int mic_errors_seen; /* Michael MIC errors with the current PTK */
 352
 353         struct wps_context *wps;
 354         int wps_success; /* WPS success event received */
 355         struct wps_er *wps_er;
 356         int blacklist_cleared;
 357
 358         struct wpabuf *pending_eapol_rx;
 359         struct os_time pending_eapol_rx_time;
 360         u8 pending_eapol_rx_src[ETH_ALEN];
 361
 362         struct ibss_rsn *ibss_rsn;
 363
 364         int set_sta_uapsd;
 365         int sta_uapsd;
 366         int set_ap_uapsd;
 367         int ap_uapsd;
 368
 369 #ifdef CONFIG_SME
 370         struct {
 371                 u8 ssid[32];
 372                 size_t ssid_len;
 373                 int freq;
 374                 u8 assoc_req_ie[200];
 375                 size_t assoc_req_ie_len;
 376                 int mfp;
 377                 int ft_used;
 378                 u8 mobility_domain[2];
 379                 u8 *ft_ies;
 380                 size_t ft_ies_len;
 381                 u8 prev_bssid[ETH_ALEN];
 382                 int prev_bssid_set;
 383                 int auth_alg;
 384                 int proto;
 385
 386                 int sa_query_count; /* number of pending SA Query requests;
 387                                      * 0 = no SA Query in progress */
 388                 int sa_query_timed_out;
 389                 u8 *sa_query_trans_id; /* buffer of WLAN_SA_QUERY_TR_ID_LEN *
 390                                         * sa_query_count octets of pending
 391                                         * SA Query transaction identifiers */
 392                 struct os_time sa_query_start;
 393         } sme;
 394 #endif /* CONFIG_SME */
 395
 396 #ifdef CONFIG_AP
 397         struct hostapd_iface *ap_iface;
 398         void (*ap_configured_cb)(void *ctx, void *data);
 399         void *ap_configured_cb_ctx;
 400         void *ap_configured_cb_data;
 401 #endif /* CONFIG_AP */
 402
 403         unsigned int off_channel_freq;
 404         struct wpabuf *pending_action_tx;
 405         u8 pending_action_src[ETH_ALEN];
 406         u8 pending_action_dst[ETH_ALEN];
 407         u8 pending_action_bssid[ETH_ALEN];
 408         unsigned int pending_action_freq;
 409         int pending_action_no_cck;
 410         int pending_action_without_roc;
 411         void (*pending_action_tx_status_cb)(struct wpa_supplicant *wpa_s,
 412                                             unsigned int freq, const u8 *dst,
 413                                             const u8 *src, const u8 *bssid,
 414                                             const u8 *data, size_t data_len,
 415                                             enum offchannel_send_action_result
 416                                             result);
 417         unsigned int roc_waiting_drv_freq;
 418         int action_tx_wait_time;
 419
 420 #ifdef CONFIG_P2P
 421         struct p2p_go_neg_results *go_params;
 422         int create_p2p_iface;
 423         u8 pending_interface_addr[ETH_ALEN];
 424         char pending_interface_name[100];
 425         int pending_interface_type;
 426         int p2p_group_idx;
 427         unsigned int pending_listen_freq;
 428         unsigned int pending_listen_duration;
 429         enum {
 430                 NOT_P2P_GROUP_INTERFACE,
 431                 P2P_GROUP_INTERFACE_PENDING,
 432                 P2P_GROUP_INTERFACE_GO,
 433                 P2P_GROUP_INTERFACE_CLIENT
 434         } p2p_group_interface;
 435         struct p2p_group *p2p_group;
 436         int p2p_long_listen; /* remaining time in long Listen state in ms */
 437         char p2p_pin[10];
 438         int p2p_wps_method;
 439         u8 p2p_auth_invite[ETH_ALEN];
 440         int p2p_sd_over_ctrl_iface;
 441         int p2p_in_provisioning;
 442         int pending_invite_ssid_id;
 443         int show_group_started;
 444         u8 go_dev_addr[ETH_ALEN];
 445         int pending_pd_before_join;
 446         u8 pending_join_iface_addr[ETH_ALEN];
 447         u8 pending_join_dev_addr[ETH_ALEN];
 448         int pending_join_wps_method;
 449         int p2p_join_scan_count;
 450         int force_long_sd;
 451
 452         /*
 453          * Whether cross connection is disallowed by the AP to which this
 454          * interface is associated (only valid if there is an association).
 455          */
 456         int cross_connect_disallowed;
 457
 458         /*
 459          * Whether this P2P group is configured to use cross connection (only
 460          * valid if this is P2P GO interface). The actual cross connect packet
 461          * forwarding may not be configured depending on the uplink status.
 462          */
 463         int cross_connect_enabled;
 464
 465         /* Whether cross connection forwarding is in use at the moment. */
 466         int cross_connect_in_use;
 467
 468         /*
 469          * Uplink interface name for cross connection
 470          */
 471         char cross_connect_uplink[100];
 472
 473         enum {
 474                 P2P_GROUP_REMOVAL_UNKNOWN,
 475                 P2P_GROUP_REMOVAL_REQUESTED,
 476                 P2P_GROUP_REMOVAL_IDLE_TIMEOUT,
 477                 P2P_GROUP_REMOVAL_UNAVAILABLE
 478         } removal_reason;
 479 #endif /* CONFIG_P2P */
 480
 481         struct wpa_ssid *bgscan_ssid;
 482         const struct bgscan_ops *bgscan;
 483         void *bgscan_priv;
 484
 485         struct wpa_ssid *connect_without_scan;
 486
 487         int after_wps;
 488         unsigned int wps_freq;
 489         int wps_fragment_size;
 490         int auto_reconnect_disabled;
 491
 492          /* Channel preferences for AP/P2P GO use */
 493         int best_24_freq;
 494         int best_5_freq;
 495         int best_overall_freq;
 496
 497         struct gas_query *gas;
 498
 499 #ifdef CONFIG_INTERWORKING
 500         unsigned int fetch_anqp_in_progress:1;
 501         unsigned int network_select:1;
 502         unsigned int auto_select:1;
 503 #endif /* CONFIG_INTERWORKING */
 504         unsigned int drv_capa_known;
 505
 506         struct {
 507                 struct hostapd_hw_modes *modes;
 508                 u16 num_modes;
 509                 u16 flags;
 510         } hw;
 511 };
 512
 513
 514 /* wpa_supplicant.c */
 515 int wpa_set_wep_keys(struct wpa_supplicant *wpa_s, struct wpa_ssid *ssid);
 516
 517 int wpa_supplicant_reload_configuration(struct wpa_supplicant *wpa_s);
 518
 519 const char * wpa_supplicant_state_txt(enum wpa_states state);
 520 int wpa_supplicant_driver_init(struct wpa_supplicant *wpa_s);
 521 int wpa_supplicant_set_suites(struct wpa_supplicant *wpa_s,
 522                               struct wpa_bss *bss, struct wpa_ssid *ssid,
 523                               u8 *wpa_ie, size_t *wpa_ie_len);
 524 void wpa_supplicant_associate(struct wpa_supplicant *wpa_s,
 525                               struct wpa_bss *bss,
 526                               struct wpa_ssid *ssid);
 527 void wpa_supplicant_set_non_wpa_policy(struct wpa_supplicant *wpa_s,
 528                                        struct wpa_ssid *ssid);
 529 void wpa_supplicant_initiate_eapol(struct wpa_supplicant *wpa_s);
 530 void wpa_clear_keys(struct wpa_supplicant *wpa_s, const u8 *addr);
 531 void wpa_supplicant_req_auth_timeout(struct wpa_supplicant *wpa_s,
 532                                      int sec, int usec);
 533 void wpa_supplicant_set_state(struct wpa_supplicant *wpa_s,
 534                               enum wpa_states state);
 535 struct wpa_ssid * wpa_supplicant_get_ssid(struct wpa_supplicant *wpa_s);
 536 const char * wpa_supplicant_get_eap_mode(struct wpa_supplicant *wpa_s);
 537 void wpa_supplicant_cancel_auth_timeout(struct wpa_supplicant *wpa_s);
 538 void wpa_supplicant_deauthenticate(struct wpa_supplicant *wpa_s,
 539                                    int reason_code);
 540 void wpa_supplicant_disassociate(struct wpa_supplicant *wpa_s,
 541                                  int reason_code);
 542
 543 void wpa_supplicant_enable_network(struct wpa_supplicant *wpa_s,
 544                                    struct wpa_ssid *ssid);
 545 void wpa_supplicant_disable_network(struct wpa_supplicant *wpa_s,
 546                                     struct wpa_ssid *ssid);
 547 void wpa_supplicant_select_network(struct wpa_supplicant *wpa_s,
 548                                    struct wpa_ssid *ssid);
 549 int wpa_supplicant_set_ap_scan(struct wpa_supplicant *wpa_s,
 550                                int ap_scan);
 551 int wpa_supplicant_set_bss_expiration_age(struct wpa_supplicant *wpa_s,
 552                                           unsigned int expire_age);
 553 int wpa_supplicant_set_bss_expiration_count(struct wpa_supplicant *wpa_s,
 554                                             unsigned int expire_count);
 555 int wpa_supplicant_set_debug_params(struct wpa_global *global,
 556                                     int debug_level, int debug_timestamp,
 557                                     int debug_show_keys);
 558
 559 void wpa_show_license(void);
 560
 561 struct wpa_supplicant * wpa_supplicant_add_iface(struct wpa_global *global,
 562                                                  struct wpa_interface *iface);
 563 int wpa_supplicant_remove_iface(struct wpa_global *global,
 564                                 struct wpa_supplicant *wpa_s);
 565 struct wpa_supplicant * wpa_supplicant_get_iface(struct wpa_global *global,
 566                                                  const char *ifname);
 567 struct wpa_global * wpa_supplicant_init(struct wpa_params *params);
 568 int wpa_supplicant_run(struct wpa_global *global);
 569 void wpa_supplicant_deinit(struct wpa_global *global);
 570
 571 int wpa_supplicant_scard_init(struct wpa_supplicant *wpa_s,
 572                               struct wpa_ssid *ssid);
 573 void wpa_supplicant_terminate_proc(struct wpa_global *global);
 574 void wpa_supplicant_rx_eapol(void *ctx, const u8 *src_addr,
 575                              const u8 *buf, size_t len);
 576 enum wpa_key_mgmt key_mgmt2driver(int key_mgmt);
 577 enum wpa_cipher cipher_suite2driver(int cipher);
 578 void wpa_supplicant_update_config(struct wpa_supplicant *wpa_s);
 579 void wpa_supplicant_clear_status(struct wpa_supplicant *wpa_s);
 580 void wpas_connection_failed(struct wpa_supplicant *wpa_s, const u8 *bssid);
 581 int wpas_driver_bss_selection(struct wpa_supplicant *wpa_s);
 582
 583 /* events.c */
 584 void wpa_supplicant_mark_disassoc(struct wpa_supplicant *wpa_s);
 585 int wpa_supplicant_connect(struct wpa_supplicant *wpa_s,
 586                            struct wpa_bss *selected,
 587                            struct wpa_ssid *ssid);
 588 void wpa_supplicant_stop_countermeasures(void *eloop_ctx, void *sock_ctx);
 589 void wpa_supplicant_delayed_mic_error_report(void *eloop_ctx, void *sock_ctx);
 590
 591 /* eap_register.c */
 592 int eap_register_methods(void);
 593
 594 /**
 595  * Utility method to tell if a given network is a persistent group
 596  * @ssid: Network object
 597  * Returns: 1 if network is a persistent group, 0 otherwise
 598  */
 599 static inline int network_is_persistent_group(struct wpa_ssid *ssid)
 600 {
 601         return ((ssid->disabled == 2) || ssid->p2p_persistent_group);
 602 }
 603
 604 #endif /* WPA_SUPPLICANT_I_H */