wps_i.h revision d5e4923d04122f81300fa68fb07d64ede28fd44d 
1/*
2 * Wi-Fi Protected Setup - internal definitions
3 * Copyright (c) 2008-2012, Jouni Malinen <j@w1.fi>
4 *
5 * This software may be distributed under the terms of the BSD license.
6 * See README for more details.
7 */
8
9#ifndef WPS_I_H
10#define WPS_I_H
11
12#include "wps.h"
13#include "wps_attr_parse.h"
14
15struct wps_nfc_pw_token;
16
17/**
18 * struct wps_data - WPS registration protocol data
19 *
20 * This data is stored at the EAP-WSC server/peer method and it is kept for a
21 * single registration protocol run.
22 */
23struct wps_data {
24	/**
25	 * wps - Pointer to long term WPS context
26	 */
27	struct wps_context *wps;
28
29	/**
30	 * registrar - Whether this end is a Registrar
31	 */
32	int registrar;
33
34	/**
35	 * er - Whether the local end is an external registrar
36	 */
37	int er;
38
39	enum {
40		/* Enrollee states */
41		SEND_M1, RECV_M2, SEND_M3, RECV_M4, SEND_M5, RECV_M6, SEND_M7,
42		RECV_M8, RECEIVED_M2D, WPS_MSG_DONE, RECV_ACK, WPS_FINISHED,
43		SEND_WSC_NACK,
44
45		/* Registrar states */
46		RECV_M1, SEND_M2, RECV_M3, SEND_M4, RECV_M5, SEND_M6,
47		RECV_M7, SEND_M8, RECV_DONE, SEND_M2D, RECV_M2D_ACK
48	} state;
49
50	u8 uuid_e[WPS_UUID_LEN];
51	u8 uuid_r[WPS_UUID_LEN];
52	u8 mac_addr_e[ETH_ALEN];
53	u8 nonce_e[WPS_NONCE_LEN];
54	u8 nonce_r[WPS_NONCE_LEN];
55	u8 psk1[WPS_PSK_LEN];
56	u8 psk2[WPS_PSK_LEN];
57	u8 snonce[2 * WPS_SECRET_NONCE_LEN];
58	u8 peer_hash1[WPS_HASH_LEN];
59	u8 peer_hash2[WPS_HASH_LEN];
60
61	struct wpabuf *dh_privkey;
62	struct wpabuf *dh_pubkey_e;
63	struct wpabuf *dh_pubkey_r;
64	u8 authkey[WPS_AUTHKEY_LEN];
65	u8 keywrapkey[WPS_KEYWRAPKEY_LEN];
66	u8 emsk[WPS_EMSK_LEN];
67
68	struct wpabuf *last_msg;
69
70	u8 *dev_password;
71	size_t dev_password_len;
72	u16 dev_pw_id;
73	int pbc;
74
75	/**
76	 * request_type - Request Type attribute from (Re)AssocReq
77	 */
78	u8 request_type;
79
80	/**
81	 * encr_type - Available encryption types
82	 */
83	u16 encr_type;
84
85	/**
86	 * auth_type - Available authentication types
87	 */
88	u16 auth_type;
89
90	u8 *new_psk;
91	size_t new_psk_len;
92
93	int wps_pin_revealed;
94	struct wps_credential cred;
95
96	struct wps_device_data peer_dev;
97
98	/**
99	 * config_error - Configuration Error value to be used in NACK
100	 */
101	u16 config_error;
102	u16 error_indication;
103
104	int ext_reg;
105	int int_reg;
106
107	struct wps_credential *new_ap_settings;
108
109	void *dh_ctx;
110
111	void (*ap_settings_cb)(void *ctx, const struct wps_credential *cred);
112	void *ap_settings_cb_ctx;
113
114	struct wps_credential *use_cred;
115
116	int use_psk_key;
117	u8 p2p_dev_addr[ETH_ALEN]; /* P2P Device Address of the client or
118				    * 00:00:00:00:00:00 if not a P2p client */
119	int pbc_in_m1;
120
121	struct wps_nfc_pw_token *nfc_pw_token;
122};
123
124
125/* wps_common.c */
126void wps_kdf(const u8 *key, const u8 *label_prefix, size_t label_prefix_len,
127	     const char *label, u8 *res, size_t res_len);
128int wps_derive_keys(struct wps_data *wps);
129void wps_derive_psk(struct wps_data *wps, const u8 *dev_passwd,
130		    size_t dev_passwd_len);
131struct wpabuf * wps_decrypt_encr_settings(struct wps_data *wps, const u8 *encr,
132					  size_t encr_len);
133void wps_fail_event(struct wps_context *wps, enum wps_msg_type msg,
134		    u16 config_error, u16 error_indication);
135void wps_success_event(struct wps_context *wps);
136void wps_pwd_auth_fail_event(struct wps_context *wps, int enrollee, int part);
137void wps_pbc_overlap_event(struct wps_context *wps);
138void wps_pbc_timeout_event(struct wps_context *wps);
139
140struct wpabuf * wps_build_wsc_ack(struct wps_data *wps);
141struct wpabuf * wps_build_wsc_nack(struct wps_data *wps);
142
143/* wps_attr_build.c */
144int wps_build_public_key(struct wps_data *wps, struct wpabuf *msg);
145int wps_build_req_type(struct wpabuf *msg, enum wps_request_type type);
146int wps_build_resp_type(struct wpabuf *msg, enum wps_response_type type);
147int wps_build_config_methods(struct wpabuf *msg, u16 methods);
148int wps_build_uuid_e(struct wpabuf *msg, const u8 *uuid);
149int wps_build_dev_password_id(struct wpabuf *msg, u16 id);
150int wps_build_config_error(struct wpabuf *msg, u16 err);
151int wps_build_authenticator(struct wps_data *wps, struct wpabuf *msg);
152int wps_build_key_wrap_auth(struct wps_data *wps, struct wpabuf *msg);
153int wps_build_encr_settings(struct wps_data *wps, struct wpabuf *msg,
154			    struct wpabuf *plain);
155int wps_build_version(struct wpabuf *msg);
156int wps_build_wfa_ext(struct wpabuf *msg, int req_to_enroll,
157		      const u8 *auth_macs, size_t auth_macs_count);
158int wps_build_msg_type(struct wpabuf *msg, enum wps_msg_type msg_type);
159int wps_build_enrollee_nonce(struct wps_data *wps, struct wpabuf *msg);
160int wps_build_registrar_nonce(struct wps_data *wps, struct wpabuf *msg);
161int wps_build_auth_type_flags(struct wps_data *wps, struct wpabuf *msg);
162int wps_build_encr_type_flags(struct wps_data *wps, struct wpabuf *msg);
163int wps_build_conn_type_flags(struct wps_data *wps, struct wpabuf *msg);
164int wps_build_assoc_state(struct wps_data *wps, struct wpabuf *msg);
165int wps_build_oob_dev_pw(struct wpabuf *msg, u16 dev_pw_id,
166			 const struct wpabuf *pubkey, const u8 *dev_pw,
167			 size_t dev_pw_len);
168struct wpabuf * wps_ie_encapsulate(struct wpabuf *data);
169
170/* wps_attr_process.c */
171int wps_process_authenticator(struct wps_data *wps, const u8 *authenticator,
172			      const struct wpabuf *msg);
173int wps_process_key_wrap_auth(struct wps_data *wps, struct wpabuf *msg,
174			      const u8 *key_wrap_auth);
175int wps_process_cred(struct wps_parse_attr *attr,
176		     struct wps_credential *cred);
177int wps_process_ap_settings(struct wps_parse_attr *attr,
178			    struct wps_credential *cred);
179
180/* wps_enrollee.c */
181struct wpabuf * wps_enrollee_get_msg(struct wps_data *wps,
182				     enum wsc_op_code *op_code);
183enum wps_process_res wps_enrollee_process_msg(struct wps_data *wps,
184					      enum wsc_op_code op_code,
185					      const struct wpabuf *msg);
186
187/* wps_registrar.c */
188struct wpabuf * wps_registrar_get_msg(struct wps_data *wps,
189				      enum wsc_op_code *op_code);
190enum wps_process_res wps_registrar_process_msg(struct wps_data *wps,
191					       enum wsc_op_code op_code,
192					       const struct wpabuf *msg);
193int wps_build_cred(struct wps_data *wps, struct wpabuf *msg);
194int wps_device_store(struct wps_registrar *reg,
195		     struct wps_device_data *dev, const u8 *uuid);
196void wps_registrar_selected_registrar_changed(struct wps_registrar *reg);
197const u8 * wps_authorized_macs(struct wps_registrar *reg, size_t *count);
198int wps_registrar_pbc_overlap(struct wps_registrar *reg,
199			      const u8 *addr, const u8 *uuid_e);
200void wps_registrar_remove_nfc_pw_token(struct wps_registrar *reg,
201				       struct wps_nfc_pw_token *token);
202
203#endif /* WPS_I_H */
204