wps.h

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#ifndef WPS_H
#define WPS_H

#include "common/ieee802_11_defs.h"
#include "wps_defs.h"

enum wsc_op_code {
        WSC_UPnP = 0 /* No OP Code in UPnP transport */,
        WSC_Start = 0x01,
        WSC_ACK = 0x02,
        WSC_NACK = 0x03,
        WSC_MSG = 0x04,
        WSC_Done = 0x05,
        WSC_FRAG_ACK = 0x06
};

struct wps_registrar;
struct upnp_wps_device_sm;
struct wps_er;
struct wps_parse_attr;

struct wps_credential {
        u8 ssid[SSID_MAX_LEN];
        size_t ssid_len;
        u16 auth_type;
        u16 encr_type;
        u8 key_idx;
        u8 key[64];
        size_t key_len;
        u8 mac_addr[ETH_ALEN];
        const u8 *cred_attr;
        size_t cred_attr_len;
};

#define WPS_DEV_TYPE_LEN 8
#define WPS_DEV_TYPE_BUFSIZE 21
#define WPS_SEC_DEV_TYPE_MAX_LEN 128
/* maximum number of advertised WPS vendor extension attributes */
#define MAX_WPS_VENDOR_EXTENSIONS 10
/* maximum size of WPS Vendor extension attribute */
#define WPS_MAX_VENDOR_EXT_LEN 1024
/* maximum number of parsed WPS vendor extension attributes */
#define MAX_WPS_PARSE_VENDOR_EXT 10

struct wps_device_data {
        u8 mac_addr[ETH_ALEN];
        char *device_name;
        char *manufacturer;
        char *model_name;
        char *model_number;
        char *serial_number;
        u8 pri_dev_type[WPS_DEV_TYPE_LEN];
#define WPS_SEC_DEVICE_TYPES 5
        u8 sec_dev_type[WPS_SEC_DEVICE_TYPES][WPS_DEV_TYPE_LEN];
        u8 num_sec_dev_types;
        u32 os_version;
        u8 rf_bands;
        u16 config_methods;
        struct wpabuf *vendor_ext_m1;
        struct wpabuf *vendor_ext[MAX_WPS_VENDOR_EXTENSIONS];

        int p2p;
};

struct wps_config {
        struct wps_context *wps;

        int registrar;

        const u8 *pin;

        size_t pin_len;

        int pbc;

        const struct wpabuf *assoc_wps_ie;

        const struct wps_credential *new_ap_settings;

        const u8 *peer_addr;

        int use_psk_key;

        u16 dev_pw_id;

        const u8 *p2p_dev_addr;

        int pbc_in_m1;

        const u8 *peer_pubkey_hash;
};

struct wps_data * wps_init(const struct wps_config *cfg);

void wps_deinit(struct wps_data *data);

enum wps_process_res {
        WPS_DONE,

        WPS_CONTINUE,

        WPS_FAILURE,

        WPS_PENDING
};
enum wps_process_res wps_process_msg(struct wps_data *wps,
                                     enum wsc_op_code op_code,
                                     const struct wpabuf *msg);

struct wpabuf * wps_get_msg(struct wps_data *wps, enum wsc_op_code *op_code);

int wps_is_selected_pbc_registrar(const struct wpabuf *msg);
int wps_is_selected_pin_registrar(const struct wpabuf *msg);
int wps_ap_priority_compar(const struct wpabuf *wps_a,
                           const struct wpabuf *wps_b);
int wps_is_addr_authorized(const struct wpabuf *msg, const u8 *addr,
                           int ver1_compat);
const u8 * wps_get_uuid_e(const struct wpabuf *msg);
int wps_is_20(const struct wpabuf *msg);

struct wpabuf * wps_build_assoc_req_ie(enum wps_request_type req_type);
struct wpabuf * wps_build_assoc_resp_ie(void);
struct wpabuf * wps_build_probe_req_ie(u16 pw_id, struct wps_device_data *dev,
                                       const u8 *uuid,
                                       enum wps_request_type req_type,
                                       unsigned int num_req_dev_types,
                                       const u8 *req_dev_types);


struct wps_registrar_config {
        int (*new_psk_cb)(void *ctx, const u8 *mac_addr, const u8 *p2p_dev_addr,
                          const u8 *psk, size_t psk_len);

        int (*set_ie_cb)(void *ctx, struct wpabuf *beacon_ie,
                         struct wpabuf *probe_resp_ie);

        void (*pin_needed_cb)(void *ctx, const u8 *uuid_e,
                              const struct wps_device_data *dev);

        void (*reg_success_cb)(void *ctx, const u8 *mac_addr,
                               const u8 *uuid_e, const u8 *dev_pw,
                               size_t dev_pw_len);

        void (*set_sel_reg_cb)(void *ctx, int sel_reg, u16 dev_passwd_id,
                               u16 sel_reg_config_methods);

        void (*enrollee_seen_cb)(void *ctx, const u8 *addr, const u8 *uuid_e,
                                 const u8 *pri_dev_type, u16 config_methods,
                                 u16 dev_password_id, u8 request_type,
                                 const char *dev_name);

        void *cb_ctx;

        int skip_cred_build;

        const u8 *extra_cred;

        size_t extra_cred_len;

        int disable_auto_conf;

        int static_wep_only;

        int dualband;

        int force_per_enrollee_psk;
};


enum wps_event {
        WPS_EV_M2D,

        WPS_EV_FAIL,

        WPS_EV_SUCCESS,

        WPS_EV_PWD_AUTH_FAIL,

        WPS_EV_PBC_OVERLAP,

        WPS_EV_PBC_TIMEOUT,

        WPS_EV_PBC_ACTIVE,

        WPS_EV_PBC_DISABLE,

        WPS_EV_ER_AP_ADD,

        WPS_EV_ER_AP_REMOVE,

        WPS_EV_ER_ENROLLEE_ADD,

        WPS_EV_ER_ENROLLEE_REMOVE,

        WPS_EV_ER_AP_SETTINGS,

        WPS_EV_ER_SET_SELECTED_REGISTRAR,

        WPS_EV_AP_PIN_SUCCESS
};

union wps_event_data {
        struct wps_event_m2d {
                u16 config_methods;
                const u8 *manufacturer;
                size_t manufacturer_len;
                const u8 *model_name;
                size_t model_name_len;
                const u8 *model_number;
                size_t model_number_len;
                const u8 *serial_number;
                size_t serial_number_len;
                const u8 *dev_name;
                size_t dev_name_len;
                const u8 *primary_dev_type; /* 8 octets */
                u16 config_error;
                u16 dev_password_id;
        } m2d;

        struct wps_event_fail {
                int msg;
                u16 config_error;
                u16 error_indication;
                u8 peer_macaddr[ETH_ALEN];
        } fail;

        struct wps_event_success {
                u8 peer_macaddr[ETH_ALEN];
        } success;

        struct wps_event_pwd_auth_fail {
                int enrollee;
                int part;
                u8 peer_macaddr[ETH_ALEN];
        } pwd_auth_fail;

        struct wps_event_er_ap {
                const u8 *uuid;
                const u8 *mac_addr;
                const char *friendly_name;
                const char *manufacturer;
                const char *manufacturer_url;
                const char *model_description;
                const char *model_name;
                const char *model_number;
                const char *model_url;
                const char *serial_number;
                const char *upc;
                const u8 *pri_dev_type;
                u8 wps_state;
        } ap;

        struct wps_event_er_enrollee {
                const u8 *uuid;
                const u8 *mac_addr;
                int m1_received;
                u16 config_methods;
                u16 dev_passwd_id;
                const u8 *pri_dev_type;
                const char *dev_name;
                const char *manufacturer;
                const char *model_name;
                const char *model_number;
                const char *serial_number;
        } enrollee;

        struct wps_event_er_ap_settings {
                const u8 *uuid;
                const struct wps_credential *cred;
        } ap_settings;

        struct wps_event_er_set_selected_registrar {
                const u8 *uuid;
                int sel_reg;
                u16 dev_passwd_id;
                u16 sel_reg_config_methods;
                enum {
                        WPS_ER_SET_SEL_REG_START,
                        WPS_ER_SET_SEL_REG_DONE,
                        WPS_ER_SET_SEL_REG_FAILED
                } state;
        } set_sel_reg;
};

struct upnp_pending_message {
        struct upnp_pending_message *next;
        u8 addr[ETH_ALEN];
        struct wpabuf *msg;
        enum wps_msg_type type;
};

struct wps_context {
        int ap;

        struct wps_registrar *registrar;

        enum wps_state wps_state;

        int ap_setup_locked;

        u8 uuid[16];

        u8 ssid[SSID_MAX_LEN];

        size_t ssid_len;

        struct wps_device_data dev;

        void *dh_ctx;

        struct wpabuf *dh_privkey;

        struct wpabuf *dh_pubkey;

        u16 config_methods;

        u16 encr_types;

        u16 auth_types;

        u16 ap_encr_type;

        u16 ap_auth_type;

        u8 *network_key;

        size_t network_key_len;

        u8 psk[32];

        int psk_set;

        u8 *ap_settings;

        size_t ap_settings_len;

        char *friendly_name;

        char *manufacturer_url;

        char *model_description;

        char *model_url;

        char *upc;

        int (*cred_cb)(void *ctx, const struct wps_credential *cred);

        void (*event_cb)(void *ctx, enum wps_event event,
                         union wps_event_data *data);

        int (*rf_band_cb)(void *ctx);

        void *cb_ctx;

        struct upnp_wps_device_sm *wps_upnp;

        /* Pending messages from UPnP PutWLANResponse */
        struct upnp_pending_message *upnp_msgs;

        u16 ap_nfc_dev_pw_id;
        struct wpabuf *ap_nfc_dh_pubkey;
        struct wpabuf *ap_nfc_dh_privkey;
        struct wpabuf *ap_nfc_dev_pw;
};

struct wps_registrar *
wps_registrar_init(struct wps_context *wps,
                   const struct wps_registrar_config *cfg);
void wps_registrar_deinit(struct wps_registrar *reg);
int wps_registrar_add_pin(struct wps_registrar *reg, const u8 *addr,
                          const u8 *uuid, const u8 *pin, size_t pin_len,
                          int timeout);
int wps_registrar_invalidate_pin(struct wps_registrar *reg, const u8 *uuid);
int wps_registrar_wps_cancel(struct wps_registrar *reg);
int wps_registrar_unlock_pin(struct wps_registrar *reg, const u8 *uuid);
int wps_registrar_button_pushed(struct wps_registrar *reg,
                                const u8 *p2p_dev_addr);
void wps_registrar_complete(struct wps_registrar *registrar, const u8 *uuid_e,
                            const u8 *dev_pw, size_t dev_pw_len);
void wps_registrar_probe_req_rx(struct wps_registrar *reg, const u8 *addr,
                                const struct wpabuf *wps_data,
                                int p2p_wildcard);
int wps_registrar_update_ie(struct wps_registrar *reg);
int wps_registrar_get_info(struct wps_registrar *reg, const u8 *addr,
                           char *buf, size_t buflen);
int wps_registrar_config_ap(struct wps_registrar *reg,
                            struct wps_credential *cred);
int wps_registrar_add_nfc_pw_token(struct wps_registrar *reg,
                                   const u8 *pubkey_hash, u16 pw_id,
                                   const u8 *dev_pw, size_t dev_pw_len,
                                   int pk_hash_provided_oob);
int wps_registrar_add_nfc_password_token(struct wps_registrar *reg,
                                         const u8 *oob_dev_pw,
                                         size_t oob_dev_pw_len);
void wps_registrar_flush(struct wps_registrar *reg);

int wps_build_credential_wrap(struct wpabuf *msg,
                              const struct wps_credential *cred);

unsigned int wps_pin_checksum(unsigned int pin);
unsigned int wps_pin_valid(unsigned int pin);
unsigned int wps_generate_pin(void);
int wps_pin_str_valid(const char *pin);
void wps_free_pending_msgs(struct upnp_pending_message *msgs);

struct wpabuf * wps_get_oob_cred(struct wps_context *wps, int rf_band,
                                 int channel);
int wps_oob_use_cred(struct wps_context *wps, struct wps_parse_attr *attr);
int wps_attr_text(struct wpabuf *data, char *buf, char *end);
const char * wps_ei_str(enum wps_error_indication ei);

struct wps_er * wps_er_init(struct wps_context *wps, const char *ifname,
                            const char *filter);
void wps_er_refresh(struct wps_er *er);
void wps_er_deinit(struct wps_er *er, void (*cb)(void *ctx), void *ctx);
void wps_er_set_sel_reg(struct wps_er *er, int sel_reg, u16 dev_passwd_id,
                        u16 sel_reg_config_methods);
int wps_er_pbc(struct wps_er *er, const u8 *uuid, const u8 *addr);
const u8 * wps_er_get_sta_uuid(struct wps_er *er, const u8 *addr);
int wps_er_learn(struct wps_er *er, const u8 *uuid, const u8 *addr,
                 const u8 *pin, size_t pin_len);
int wps_er_set_config(struct wps_er *er, const u8 *uuid, const u8 *addr,
                      const struct wps_credential *cred);
int wps_er_config(struct wps_er *er, const u8 *uuid, const u8 *addr,
                  const u8 *pin, size_t pin_len,
                  const struct wps_credential *cred);
struct wpabuf * wps_er_config_token_from_cred(struct wps_context *wps,
                                              struct wps_credential *cred);
struct wpabuf * wps_er_nfc_config_token(struct wps_er *er, const u8 *uuid,
                                        const u8 *addr);
struct wpabuf * wps_er_nfc_handover_sel(struct wps_er *er,
                                        struct wps_context *wps, const u8 *uuid,
                                        const u8 *addr, struct wpabuf *pubkey);

int wps_dev_type_str2bin(const char *str, u8 dev_type[WPS_DEV_TYPE_LEN]);
char * wps_dev_type_bin2str(const u8 dev_type[WPS_DEV_TYPE_LEN], char *buf,
                            size_t buf_len);
void uuid_gen_mac_addr(const u8 *mac_addr, u8 *uuid);
u16 wps_config_methods_str2bin(const char *str);
struct wpabuf * wps_build_nfc_pw_token(u16 dev_pw_id,
                                       const struct wpabuf *pubkey,
                                       const struct wpabuf *dev_pw);
struct wpabuf * wps_nfc_token_build(int ndef, int id, struct wpabuf *pubkey,
                                    struct wpabuf *dev_pw);
int wps_nfc_gen_dh(struct wpabuf **pubkey, struct wpabuf **privkey);
struct wpabuf * wps_nfc_token_gen(int ndef, int *id, struct wpabuf **pubkey,
                                  struct wpabuf **privkey,
                                  struct wpabuf **dev_pw);
struct wpabuf * wps_build_nfc_handover_req(struct wps_context *ctx,
                                           struct wpabuf *nfc_dh_pubkey);
struct wpabuf * wps_build_nfc_handover_sel(struct wps_context *ctx,
                                           struct wpabuf *nfc_dh_pubkey,
                                           const u8 *bssid, int freq);
struct wpabuf * wps_build_nfc_handover_req_p2p(struct wps_context *ctx,
                                               struct wpabuf *nfc_dh_pubkey);
struct wpabuf * wps_build_nfc_handover_sel_p2p(struct wps_context *ctx,
                                               int nfc_dev_pw_id,
                                               struct wpabuf *nfc_dh_pubkey,
                                               struct wpabuf *nfc_dev_pw);

/* ndef.c */
struct wpabuf * ndef_parse_wifi(const struct wpabuf *buf);
struct wpabuf * ndef_build_wifi(const struct wpabuf *buf);
struct wpabuf * ndef_parse_p2p(const struct wpabuf *buf);
struct wpabuf * ndef_build_p2p(const struct wpabuf *buf);

#ifdef CONFIG_WPS_STRICT
int wps_validate_beacon(const struct wpabuf *wps_ie);
int wps_validate_beacon_probe_resp(const struct wpabuf *wps_ie, int probe,
                                   const u8 *addr);
int wps_validate_probe_req(const struct wpabuf *wps_ie, const u8 *addr);
int wps_validate_assoc_req(const struct wpabuf *wps_ie);
int wps_validate_assoc_resp(const struct wpabuf *wps_ie);
int wps_validate_m1(const struct wpabuf *tlvs);
int wps_validate_m2(const struct wpabuf *tlvs);
int wps_validate_m2d(const struct wpabuf *tlvs);
int wps_validate_m3(const struct wpabuf *tlvs);
int wps_validate_m4(const struct wpabuf *tlvs);
int wps_validate_m4_encr(const struct wpabuf *tlvs, int wps2);
int wps_validate_m5(const struct wpabuf *tlvs);
int wps_validate_m5_encr(const struct wpabuf *tlvs, int wps2);
int wps_validate_m6(const struct wpabuf *tlvs);
int wps_validate_m6_encr(const struct wpabuf *tlvs, int wps2);
int wps_validate_m7(const struct wpabuf *tlvs);
int wps_validate_m7_encr(const struct wpabuf *tlvs, int ap, int wps2);
int wps_validate_m8(const struct wpabuf *tlvs);
int wps_validate_m8_encr(const struct wpabuf *tlvs, int ap, int wps2);
int wps_validate_wsc_ack(const struct wpabuf *tlvs);
int wps_validate_wsc_nack(const struct wpabuf *tlvs);
int wps_validate_wsc_done(const struct wpabuf *tlvs);
int wps_validate_upnp_set_selected_registrar(const struct wpabuf *tlvs);
#else /* CONFIG_WPS_STRICT */
static inline int wps_validate_beacon(const struct wpabuf *wps_ie){
        return 0;
}

static inline int wps_validate_beacon_probe_resp(const struct wpabuf *wps_ie,
                                                 int probe, const u8 *addr)
{
        return 0;
}

static inline int wps_validate_probe_req(const struct wpabuf *wps_ie,
                                         const u8 *addr)
{
        return 0;
}

static inline int wps_validate_assoc_req(const struct wpabuf *wps_ie)
{
        return 0;
}

static inline int wps_validate_assoc_resp(const struct wpabuf *wps_ie)
{
        return 0;
}

static inline int wps_validate_m1(const struct wpabuf *tlvs)
{
        return 0;
}

static inline int wps_validate_m2(const struct wpabuf *tlvs)
{
        return 0;
}

static inline int wps_validate_m2d(const struct wpabuf *tlvs)
{
        return 0;
}

static inline int wps_validate_m3(const struct wpabuf *tlvs)
{
        return 0;
}

static inline int wps_validate_m4(const struct wpabuf *tlvs)
{
        return 0;
}

static inline int wps_validate_m4_encr(const struct wpabuf *tlvs, int wps2)
{
        return 0;
}

static inline int wps_validate_m5(const struct wpabuf *tlvs)
{
        return 0;
}

static inline int wps_validate_m5_encr(const struct wpabuf *tlvs, int wps2)
{
        return 0;
}

static inline int wps_validate_m6(const struct wpabuf *tlvs)
{
        return 0;
}

static inline int wps_validate_m6_encr(const struct wpabuf *tlvs, int wps2)
{
        return 0;
}

static inline int wps_validate_m7(const struct wpabuf *tlvs)
{
        return 0;
}

static inline int wps_validate_m7_encr(const struct wpabuf *tlvs, int ap,
                                       int wps2)
{
        return 0;
}

static inline int wps_validate_m8(const struct wpabuf *tlvs)
{
        return 0;
}

static inline int wps_validate_m8_encr(const struct wpabuf *tlvs, int ap,
                                       int wps2)
{
        return 0;
}

static inline int wps_validate_wsc_ack(const struct wpabuf *tlvs)
{
        return 0;
}

static inline int wps_validate_wsc_nack(const struct wpabuf *tlvs)
{
        return 0;
}

static inline int wps_validate_wsc_done(const struct wpabuf *tlvs)
{
        return 0;
}

static inline int wps_validate_upnp_set_selected_registrar(
        const struct wpabuf *tlvs)
{
        return 0;
}
#endif /* CONFIG_WPS_STRICT */

#endif /* WPS_H */