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6fc6879b | 1 | /* |
81c85c06 | 2 | * SSL/TLS interface definition |
080585c0 | 3 | * Copyright (c) 2004-2013, Jouni Malinen <j@w1.fi> |
6fc6879b | 4 | * |
0f3d578e JM |
5 | * This software may be distributed under the terms of the BSD license. |
6 | * See README for more details. | |
6fc6879b JM |
7 | */ |
8 | ||
9 | #ifndef TLS_H | |
10 | #define TLS_H | |
11 | ||
12 | struct tls_connection; | |
13 | ||
1046db8b | 14 | struct tls_random { |
6fc6879b JM |
15 | const u8 *client_random; |
16 | size_t client_random_len; | |
17 | const u8 *server_random; | |
18 | size_t server_random_len; | |
6fc6879b JM |
19 | }; |
20 | ||
00468b46 | 21 | enum tls_event { |
dd7fec1f | 22 | TLS_CERT_CHAIN_SUCCESS, |
00468b46 | 23 | TLS_CERT_CHAIN_FAILURE, |
dd7fec1f PS |
24 | TLS_PEER_CERTIFICATE, |
25 | TLS_ALERT | |
00468b46 JM |
26 | }; |
27 | ||
28 | /* | |
29 | * Note: These are used as identifier with external programs and as such, the | |
30 | * values must not be changed. | |
31 | */ | |
32 | enum tls_fail_reason { | |
33 | TLS_FAIL_UNSPECIFIED = 0, | |
34 | TLS_FAIL_UNTRUSTED = 1, | |
35 | TLS_FAIL_REVOKED = 2, | |
36 | TLS_FAIL_NOT_YET_VALID = 3, | |
37 | TLS_FAIL_EXPIRED = 4, | |
38 | TLS_FAIL_SUBJECT_MISMATCH = 5, | |
39 | TLS_FAIL_ALTSUBJECT_MISMATCH = 6, | |
40 | TLS_FAIL_BAD_CERTIFICATE = 7, | |
01f809c7 | 41 | TLS_FAIL_SERVER_CHAIN_PROBE = 8, |
cebee30f JM |
42 | TLS_FAIL_DOMAIN_SUFFIX_MISMATCH = 9, |
43 | TLS_FAIL_DOMAIN_MISMATCH = 10, | |
4eb8cfe0 | 44 | TLS_FAIL_INSUFFICIENT_KEY_LEN = 11, |
841205a1 | 45 | TLS_FAIL_DN_MISMATCH = 12, |
00468b46 JM |
46 | }; |
47 | ||
d07d3fbd JM |
48 | |
49 | #define TLS_MAX_ALT_SUBJECT 10 | |
50 | ||
bc0634da JM |
51 | struct tls_cert_data { |
52 | int depth; | |
53 | const char *subject; | |
54 | const struct wpabuf *cert; | |
55 | const u8 *hash; | |
56 | size_t hash_len; | |
57 | const char *altsubject[TLS_MAX_ALT_SUBJECT]; | |
58 | int num_altsubject; | |
59 | const char *serial_num; | |
21f1a1e6 | 60 | int tod; |
bc0634da JM |
61 | }; |
62 | ||
00468b46 JM |
63 | union tls_event_data { |
64 | struct { | |
65 | int depth; | |
66 | const char *subject; | |
67 | enum tls_fail_reason reason; | |
68 | const char *reason_txt; | |
69 | const struct wpabuf *cert; | |
70 | } cert_fail; | |
71 | ||
bc0634da | 72 | struct tls_cert_data peer_cert; |
dd7fec1f PS |
73 | |
74 | struct { | |
75 | int is_local; | |
76 | const char *type; | |
77 | const char *description; | |
78 | } alert; | |
00468b46 JM |
79 | }; |
80 | ||
6fc6879b JM |
81 | struct tls_config { |
82 | const char *opensc_engine_path; | |
83 | const char *pkcs11_engine_path; | |
84 | const char *pkcs11_module_path; | |
76f04b38 | 85 | int fips_mode; |
1b414f59 | 86 | int cert_in_cb; |
b7328434 | 87 | const char *openssl_ciphers; |
681e199d | 88 | unsigned int tls_session_lifetime; |
159a7fbd | 89 | unsigned int crl_reload_interval; |
6418400d | 90 | unsigned int tls_flags; |
00468b46 JM |
91 | |
92 | void (*event_cb)(void *ctx, enum tls_event ev, | |
93 | union tls_event_data *data); | |
94 | void *cb_ctx; | |
6fc6879b JM |
95 | }; |
96 | ||
29446569 JM |
97 | #define TLS_CONN_ALLOW_SIGN_RSA_MD5 BIT(0) |
98 | #define TLS_CONN_DISABLE_TIME_CHECKS BIT(1) | |
e866f39f | 99 | #define TLS_CONN_DISABLE_SESSION_TICKET BIT(2) |
080585c0 JM |
100 | #define TLS_CONN_REQUEST_OCSP BIT(3) |
101 | #define TLS_CONN_REQUIRE_OCSP BIT(4) | |
e9a6f183 DS |
102 | #define TLS_CONN_DISABLE_TLSv1_1 BIT(5) |
103 | #define TLS_CONN_DISABLE_TLSv1_2 BIT(6) | |
d4913c58 | 104 | #define TLS_CONN_EAP_FAST BIT(7) |
5650d379 | 105 | #define TLS_CONN_DISABLE_TLSv1_0 BIT(8) |
3c108b75 | 106 | #define TLS_CONN_EXT_CERT_CHECK BIT(9) |
d6b536f7 | 107 | #define TLS_CONN_REQUIRE_OCSP_ALL BIT(10) |
60ed2f24 | 108 | #define TLS_CONN_SUITEB BIT(11) |
2ed70c75 | 109 | #define TLS_CONN_SUITEB_NO_ECDH BIT(12) |
bbbc7e80 | 110 | #define TLS_CONN_DISABLE_TLSv1_3 BIT(13) |
cc9c4fec JM |
111 | #define TLS_CONN_ENABLE_TLSv1_0 BIT(14) |
112 | #define TLS_CONN_ENABLE_TLSv1_1 BIT(15) | |
113 | #define TLS_CONN_ENABLE_TLSv1_2 BIT(16) | |
3ec65a8e | 114 | #define TLS_CONN_TEAP_ANON_DH BIT(17) |
29446569 | 115 | |
6fc6879b JM |
116 | /** |
117 | * struct tls_connection_params - Parameters for TLS connection | |
118 | * @ca_cert: File or reference name for CA X.509 certificate in PEM or DER | |
119 | * format | |
120 | * @ca_cert_blob: ca_cert as inlined data or %NULL if not used | |
121 | * @ca_cert_blob_len: ca_cert_blob length | |
122 | * @ca_path: Path to CA certificates (OpenSSL specific) | |
123 | * @subject_match: String to match in the subject of the peer certificate or | |
124 | * %NULL to allow all subjects | |
125 | * @altsubject_match: String to match in the alternative subject of the peer | |
126 | * certificate or %NULL to allow all alternative subjects | |
242e8572 JM |
127 | * @suffix_match: Semicolon deliminated string of values to suffix match against |
128 | * the dNSName or CN of the peer certificate or %NULL to allow all domain names. | |
129 | * This may allow subdomains and wildcard certificates. Each domain name label | |
130 | * must have a full case-insensitive match. | |
cebee30f JM |
131 | * @domain_match: String to match in the dNSName or CN of the peer |
132 | * certificate or %NULL to allow all domain names. This requires a full, | |
133 | * case-insensitive match. | |
242e8572 JM |
134 | * |
135 | * More than one match string can be provided by using semicolons to | |
136 | * separate the strings (e.g., example.org;example.com). When multiple | |
137 | * strings are specified, a match with any one of the values is | |
138 | * considered a sufficient match for the certificate, i.e., the | |
139 | * conditions are ORed together. | |
6fc6879b JM |
140 | * @client_cert: File or reference name for client X.509 certificate in PEM or |
141 | * DER format | |
142 | * @client_cert_blob: client_cert as inlined data or %NULL if not used | |
143 | * @client_cert_blob_len: client_cert_blob length | |
144 | * @private_key: File or reference name for client private key in PEM or DER | |
145 | * format (traditional format (RSA PRIVATE KEY) or PKCS#8 (PRIVATE KEY) | |
146 | * @private_key_blob: private_key as inlined data or %NULL if not used | |
147 | * @private_key_blob_len: private_key_blob length | |
148 | * @private_key_passwd: Passphrase for decrypted private key, %NULL if no | |
149 | * passphrase is used. | |
150 | * @dh_file: File name for DH/DSA data in PEM format, or %NULL if not used | |
151 | * @dh_blob: dh_file as inlined data or %NULL if not used | |
152 | * @dh_blob_len: dh_blob length | |
153 | * @engine: 1 = use engine (e.g., a smartcard) for private key operations | |
154 | * (this is OpenSSL specific for now) | |
155 | * @engine_id: engine id string (this is OpenSSL specific for now) | |
156 | * @ppin: pointer to the pin variable in the configuration | |
157 | * (this is OpenSSL specific for now) | |
e59c91af DS |
158 | * @key_id: the private key's id when using engine (this is OpenSSL |
159 | * specific for now) | |
160 | * @cert_id: the certificate's id when using engine | |
161 | * @ca_cert_id: the CA certificate's id when using engine | |
b7328434 | 162 | * @openssl_ciphers: OpenSSL cipher configuration |
0521c6eb HV |
163 | * @openssl_ecdh_curves: OpenSSL ECDH curve configuration. %NULL for auto if |
164 | * supported, empty string to disable, or a colon-separated curve list. | |
29446569 | 165 | * @flags: Parameter options (TLS_CONN_*) |
080585c0 JM |
166 | * @ocsp_stapling_response: DER encoded file with cached OCSP stapling response |
167 | * or %NULL if OCSP is not enabled | |
5addb0df JM |
168 | * @ocsp_stapling_response_multi: DER encoded file with cached OCSP stapling |
169 | * response list (OCSPResponseList for ocsp_multi in RFC 6961) or %NULL if | |
170 | * ocsp_multi is not enabled | |
841205a1 | 171 | * @check_cert_subject: Client certificate subject name matching string |
6fc6879b JM |
172 | * |
173 | * TLS connection parameters to be configured with tls_connection_set_params() | |
174 | * and tls_global_set_params(). | |
175 | * | |
176 | * Certificates and private key can be configured either as a reference name | |
177 | * (file path or reference to certificate store) or by providing the same data | |
178 | * as a pointer to the data in memory. Only one option will be used for each | |
179 | * field. | |
180 | */ | |
181 | struct tls_connection_params { | |
182 | const char *ca_cert; | |
183 | const u8 *ca_cert_blob; | |
184 | size_t ca_cert_blob_len; | |
185 | const char *ca_path; | |
186 | const char *subject_match; | |
187 | const char *altsubject_match; | |
01f809c7 | 188 | const char *suffix_match; |
cebee30f | 189 | const char *domain_match; |
6fc6879b | 190 | const char *client_cert; |
e2722bf8 | 191 | const char *client_cert2; |
6fc6879b JM |
192 | const u8 *client_cert_blob; |
193 | size_t client_cert_blob_len; | |
194 | const char *private_key; | |
e2722bf8 | 195 | const char *private_key2; |
6fc6879b JM |
196 | const u8 *private_key_blob; |
197 | size_t private_key_blob_len; | |
198 | const char *private_key_passwd; | |
e2722bf8 | 199 | const char *private_key_passwd2; |
6fc6879b JM |
200 | const char *dh_file; |
201 | const u8 *dh_blob; | |
202 | size_t dh_blob_len; | |
6fc6879b JM |
203 | |
204 | /* OpenSSL specific variables */ | |
205 | int engine; | |
206 | const char *engine_id; | |
207 | const char *pin; | |
208 | const char *key_id; | |
e59c91af DS |
209 | const char *cert_id; |
210 | const char *ca_cert_id; | |
b7328434 | 211 | const char *openssl_ciphers; |
0521c6eb | 212 | const char *openssl_ecdh_curves; |
29446569 JM |
213 | |
214 | unsigned int flags; | |
080585c0 | 215 | const char *ocsp_stapling_response; |
5addb0df | 216 | const char *ocsp_stapling_response_multi; |
841205a1 | 217 | const char *check_cert_subject; |
6fc6879b JM |
218 | }; |
219 | ||
220 | ||
221 | /** | |
222 | * tls_init - Initialize TLS library | |
223 | * @conf: Configuration data for TLS library | |
224 | * Returns: Context data to be used as tls_ctx in calls to other functions, | |
225 | * or %NULL on failure. | |
226 | * | |
227 | * Called once during program startup and once for each RSN pre-authentication | |
228 | * session. In other words, there can be two concurrent TLS contexts. If global | |
229 | * library initialization is needed (i.e., one that is shared between both | |
230 | * authentication types), the TLS library wrapper should maintain a reference | |
231 | * counter and do global initialization only when moving from 0 to 1 reference. | |
232 | */ | |
233 | void * tls_init(const struct tls_config *conf); | |
234 | ||
235 | /** | |
236 | * tls_deinit - Deinitialize TLS library | |
237 | * @tls_ctx: TLS context data from tls_init() | |
238 | * | |
239 | * Called once during program shutdown and once for each RSN pre-authentication | |
240 | * session. If global library deinitialization is needed (i.e., one that is | |
241 | * shared between both authentication types), the TLS library wrapper should | |
242 | * maintain a reference counter and do global deinitialization only when moving | |
243 | * from 1 to 0 references. | |
244 | */ | |
245 | void tls_deinit(void *tls_ctx); | |
246 | ||
247 | /** | |
248 | * tls_get_errors - Process pending errors | |
249 | * @tls_ctx: TLS context data from tls_init() | |
250 | * Returns: Number of found error, 0 if no errors detected. | |
251 | * | |
252 | * Process all pending TLS errors. | |
253 | */ | |
254 | int tls_get_errors(void *tls_ctx); | |
255 | ||
256 | /** | |
257 | * tls_connection_init - Initialize a new TLS connection | |
258 | * @tls_ctx: TLS context data from tls_init() | |
259 | * Returns: Connection context data, conn for other function calls | |
260 | */ | |
261 | struct tls_connection * tls_connection_init(void *tls_ctx); | |
262 | ||
263 | /** | |
264 | * tls_connection_deinit - Free TLS connection data | |
265 | * @tls_ctx: TLS context data from tls_init() | |
266 | * @conn: Connection context data from tls_connection_init() | |
267 | * | |
268 | * Release all resources allocated for TLS connection. | |
269 | */ | |
270 | void tls_connection_deinit(void *tls_ctx, struct tls_connection *conn); | |
271 | ||
272 | /** | |
273 | * tls_connection_established - Has the TLS connection been completed? | |
274 | * @tls_ctx: TLS context data from tls_init() | |
275 | * @conn: Connection context data from tls_connection_init() | |
276 | * Returns: 1 if TLS connection has been completed, 0 if not. | |
277 | */ | |
278 | int tls_connection_established(void *tls_ctx, struct tls_connection *conn); | |
279 | ||
0ec3e77a JM |
280 | /** |
281 | * tls_connection_peer_serial_num - Fetch peer certificate serial number | |
282 | * @tls_ctx: TLS context data from tls_init() | |
283 | * @conn: Connection context data from tls_connection_init() | |
284 | * Returns: Allocated string buffer containing the peer certificate serial | |
285 | * number or %NULL on error. | |
286 | * | |
287 | * The caller is responsible for freeing the returned buffer with os_free(). | |
288 | */ | |
289 | char * tls_connection_peer_serial_num(void *tls_ctx, | |
290 | struct tls_connection *conn); | |
291 | ||
6fc6879b JM |
292 | /** |
293 | * tls_connection_shutdown - Shutdown TLS connection | |
294 | * @tls_ctx: TLS context data from tls_init() | |
295 | * @conn: Connection context data from tls_connection_init() | |
296 | * Returns: 0 on success, -1 on failure | |
297 | * | |
298 | * Shutdown current TLS connection without releasing all resources. New | |
299 | * connection can be started by using the same conn without having to call | |
300 | * tls_connection_init() or setting certificates etc. again. The new | |
301 | * connection should try to use session resumption. | |
302 | */ | |
303 | int tls_connection_shutdown(void *tls_ctx, struct tls_connection *conn); | |
304 | ||
305 | enum { | |
fd4fb281 | 306 | TLS_SET_PARAMS_ENGINE_PRV_BAD_PIN = -4, |
6fc6879b JM |
307 | TLS_SET_PARAMS_ENGINE_PRV_VERIFY_FAILED = -3, |
308 | TLS_SET_PARAMS_ENGINE_PRV_INIT_FAILED = -2 | |
309 | }; | |
310 | ||
311 | /** | |
312 | * tls_connection_set_params - Set TLS connection parameters | |
313 | * @tls_ctx: TLS context data from tls_init() | |
314 | * @conn: Connection context data from tls_connection_init() | |
315 | * @params: Connection parameters | |
316 | * Returns: 0 on success, -1 on failure, | |
fd4fb281 MG |
317 | * TLS_SET_PARAMS_ENGINE_PRV_INIT_FAILED (-2) on error causing PKCS#11 engine |
318 | * failure, or | |
6fc6879b | 319 | * TLS_SET_PARAMS_ENGINE_PRV_VERIFY_FAILED (-3) on failure to verify the |
fd4fb281 MG |
320 | * PKCS#11 engine private key, or |
321 | * TLS_SET_PARAMS_ENGINE_PRV_BAD_PIN (-4) on PIN error causing PKCS#11 engine | |
322 | * failure. | |
6fc6879b JM |
323 | */ |
324 | int __must_check | |
325 | tls_connection_set_params(void *tls_ctx, struct tls_connection *conn, | |
326 | const struct tls_connection_params *params); | |
327 | ||
328 | /** | |
329 | * tls_global_set_params - Set TLS parameters for all TLS connection | |
330 | * @tls_ctx: TLS context data from tls_init() | |
331 | * @params: Global TLS parameters | |
332 | * Returns: 0 on success, -1 on failure, | |
fd4fb281 MG |
333 | * TLS_SET_PARAMS_ENGINE_PRV_INIT_FAILED (-2) on error causing PKCS#11 engine |
334 | * failure, or | |
6fc6879b | 335 | * TLS_SET_PARAMS_ENGINE_PRV_VERIFY_FAILED (-3) on failure to verify the |
fd4fb281 MG |
336 | * PKCS#11 engine private key, or |
337 | * TLS_SET_PARAMS_ENGINE_PRV_BAD_PIN (-4) on PIN error causing PKCS#11 engine | |
338 | * failure. | |
6fc6879b JM |
339 | */ |
340 | int __must_check tls_global_set_params( | |
341 | void *tls_ctx, const struct tls_connection_params *params); | |
342 | ||
343 | /** | |
344 | * tls_global_set_verify - Set global certificate verification options | |
345 | * @tls_ctx: TLS context data from tls_init() | |
346 | * @check_crl: 0 = do not verify CRLs, 1 = verify CRL for the user certificate, | |
347 | * 2 = verify CRL for all certificates | |
dd5d325b | 348 | * @strict: 0 = allow CRL time errors, 1 = do not allow CRL time errors |
6fc6879b JM |
349 | * Returns: 0 on success, -1 on failure |
350 | */ | |
dd5d325b SV |
351 | int __must_check tls_global_set_verify(void *tls_ctx, int check_crl, |
352 | int strict); | |
6fc6879b JM |
353 | |
354 | /** | |
355 | * tls_connection_set_verify - Set certificate verification options | |
356 | * @tls_ctx: TLS context data from tls_init() | |
357 | * @conn: Connection context data from tls_connection_init() | |
358 | * @verify_peer: 1 = verify peer certificate | |
bfbebd26 JM |
359 | * @flags: Connection flags (TLS_CONN_*) |
360 | * @session_ctx: Session caching context or %NULL to use default | |
361 | * @session_ctx_len: Length of @session_ctx in bytes. | |
6fc6879b JM |
362 | * Returns: 0 on success, -1 on failure |
363 | */ | |
364 | int __must_check tls_connection_set_verify(void *tls_ctx, | |
365 | struct tls_connection *conn, | |
bfbebd26 JM |
366 | int verify_peer, |
367 | unsigned int flags, | |
368 | const u8 *session_ctx, | |
369 | size_t session_ctx_len); | |
6fc6879b | 370 | |
6fc6879b | 371 | /** |
1046db8b | 372 | * tls_connection_get_random - Get random data from TLS connection |
6fc6879b JM |
373 | * @tls_ctx: TLS context data from tls_init() |
374 | * @conn: Connection context data from tls_connection_init() | |
1046db8b | 375 | * @data: Structure of client/server random data (filled on success) |
6fc6879b JM |
376 | * Returns: 0 on success, -1 on failure |
377 | */ | |
1046db8b | 378 | int __must_check tls_connection_get_random(void *tls_ctx, |
6fc6879b | 379 | struct tls_connection *conn, |
1046db8b | 380 | struct tls_random *data); |
6fc6879b JM |
381 | |
382 | /** | |
73581707 | 383 | * tls_connection_export_key - Derive keying material from a TLS connection |
6fc6879b JM |
384 | * @tls_ctx: TLS context data from tls_init() |
385 | * @conn: Connection context data from tls_connection_init() | |
386 | * @label: Label (e.g., description of the key) for PRF | |
a916ff5c EO |
387 | * @context: Optional extra upper-layer context (max len 2^16) |
388 | * @context_len: The length of the context value | |
6fc6879b JM |
389 | * @out: Buffer for output data from TLS-PRF |
390 | * @out_len: Length of the output buffer | |
391 | * Returns: 0 on success, -1 on failure | |
392 | * | |
a916ff5c EO |
393 | * Exports keying material using the mechanism described in RFC 5705. If |
394 | * context is %NULL, context is not provided; otherwise, context is provided | |
395 | * (including the case of empty context with context_len == 0). | |
6fc6879b | 396 | */ |
73581707 DB |
397 | int __must_check tls_connection_export_key(void *tls_ctx, |
398 | struct tls_connection *conn, | |
399 | const char *label, | |
a916ff5c EO |
400 | const u8 *context, |
401 | size_t context_len, | |
73581707 DB |
402 | u8 *out, size_t out_len); |
403 | ||
404 | /** | |
405 | * tls_connection_get_eap_fast_key - Derive key material for EAP-FAST | |
406 | * @tls_ctx: TLS context data from tls_init() | |
407 | * @conn: Connection context data from tls_connection_init() | |
408 | * @out: Buffer for output data from TLS-PRF | |
409 | * @out_len: Length of the output buffer | |
410 | * Returns: 0 on success, -1 on failure | |
411 | * | |
412 | * Exports key material after the normal TLS key block for use with | |
413 | * EAP-FAST. Most callers will want tls_connection_export_key(), but EAP-FAST | |
414 | * uses a different legacy mechanism. | |
415 | */ | |
416 | int __must_check tls_connection_get_eap_fast_key(void *tls_ctx, | |
417 | struct tls_connection *conn, | |
418 | u8 *out, size_t out_len); | |
6fc6879b JM |
419 | |
420 | /** | |
421 | * tls_connection_handshake - Process TLS handshake (client side) | |
422 | * @tls_ctx: TLS context data from tls_init() | |
423 | * @conn: Connection context data from tls_connection_init() | |
81c85c06 | 424 | * @in_data: Input data from TLS server |
6fc6879b | 425 | * @appl_data: Pointer to application data pointer, or %NULL if dropped |
81c85c06 | 426 | * Returns: Output data, %NULL on failure |
6fc6879b | 427 | * |
81c85c06 | 428 | * The caller is responsible for freeing the returned output data. If the final |
6fc6879b | 429 | * handshake message includes application data, this is decrypted and |
81c85c06 JM |
430 | * appl_data (if not %NULL) is set to point this data. The caller is |
431 | * responsible for freeing appl_data. | |
6fc6879b JM |
432 | * |
433 | * This function is used during TLS handshake. The first call is done with | |
434 | * in_data == %NULL and the library is expected to return ClientHello packet. | |
435 | * This packet is then send to the server and a response from server is given | |
436 | * to TLS library by calling this function again with in_data pointing to the | |
437 | * TLS message from the server. | |
438 | * | |
439 | * If the TLS handshake fails, this function may return %NULL. However, if the | |
440 | * TLS library has a TLS alert to send out, that should be returned as the | |
441 | * output data. In this case, tls_connection_get_failed() must return failure | |
442 | * (> 0). | |
443 | * | |
444 | * tls_connection_established() should return 1 once the TLS handshake has been | |
445 | * completed successfully. | |
446 | */ | |
81c85c06 JM |
447 | struct wpabuf * tls_connection_handshake(void *tls_ctx, |
448 | struct tls_connection *conn, | |
449 | const struct wpabuf *in_data, | |
450 | struct wpabuf **appl_data); | |
6fc6879b | 451 | |
dbdcfa39 JM |
452 | struct wpabuf * tls_connection_handshake2(void *tls_ctx, |
453 | struct tls_connection *conn, | |
454 | const struct wpabuf *in_data, | |
455 | struct wpabuf **appl_data, | |
456 | int *more_data_needed); | |
457 | ||
6fc6879b JM |
458 | /** |
459 | * tls_connection_server_handshake - Process TLS handshake (server side) | |
460 | * @tls_ctx: TLS context data from tls_init() | |
461 | * @conn: Connection context data from tls_connection_init() | |
462 | * @in_data: Input data from TLS peer | |
81c85c06 JM |
463 | * @appl_data: Pointer to application data pointer, or %NULL if dropped |
464 | * Returns: Output data, %NULL on failure | |
6fc6879b | 465 | * |
81c85c06 | 466 | * The caller is responsible for freeing the returned output data. |
6fc6879b | 467 | */ |
81c85c06 JM |
468 | struct wpabuf * tls_connection_server_handshake(void *tls_ctx, |
469 | struct tls_connection *conn, | |
470 | const struct wpabuf *in_data, | |
471 | struct wpabuf **appl_data); | |
6fc6879b JM |
472 | |
473 | /** | |
474 | * tls_connection_encrypt - Encrypt data into TLS tunnel | |
475 | * @tls_ctx: TLS context data from tls_init() | |
476 | * @conn: Connection context data from tls_connection_init() | |
81c85c06 JM |
477 | * @in_data: Plaintext data to be encrypted |
478 | * Returns: Encrypted TLS data or %NULL on failure | |
6fc6879b JM |
479 | * |
480 | * This function is used after TLS handshake has been completed successfully to | |
81c85c06 JM |
481 | * send data in the encrypted tunnel. The caller is responsible for freeing the |
482 | * returned output data. | |
6fc6879b | 483 | */ |
81c85c06 JM |
484 | struct wpabuf * tls_connection_encrypt(void *tls_ctx, |
485 | struct tls_connection *conn, | |
486 | const struct wpabuf *in_data); | |
6fc6879b JM |
487 | |
488 | /** | |
489 | * tls_connection_decrypt - Decrypt data from TLS tunnel | |
490 | * @tls_ctx: TLS context data from tls_init() | |
491 | * @conn: Connection context data from tls_connection_init() | |
81c85c06 JM |
492 | * @in_data: Encrypted TLS data |
493 | * Returns: Decrypted TLS data or %NULL on failure | |
6fc6879b JM |
494 | * |
495 | * This function is used after TLS handshake has been completed successfully to | |
81c85c06 JM |
496 | * receive data from the encrypted tunnel. The caller is responsible for |
497 | * freeing the returned output data. | |
6fc6879b | 498 | */ |
81c85c06 JM |
499 | struct wpabuf * tls_connection_decrypt(void *tls_ctx, |
500 | struct tls_connection *conn, | |
501 | const struct wpabuf *in_data); | |
6fc6879b | 502 | |
dbdcfa39 JM |
503 | struct wpabuf * tls_connection_decrypt2(void *tls_ctx, |
504 | struct tls_connection *conn, | |
505 | const struct wpabuf *in_data, | |
506 | int *more_data_needed); | |
507 | ||
6fc6879b JM |
508 | /** |
509 | * tls_connection_resumed - Was session resumption used | |
510 | * @tls_ctx: TLS context data from tls_init() | |
511 | * @conn: Connection context data from tls_connection_init() | |
512 | * Returns: 1 if current session used session resumption, 0 if not | |
513 | */ | |
514 | int tls_connection_resumed(void *tls_ctx, struct tls_connection *conn); | |
515 | ||
516 | enum { | |
517 | TLS_CIPHER_NONE, | |
518 | TLS_CIPHER_RC4_SHA /* 0x0005 */, | |
519 | TLS_CIPHER_AES128_SHA /* 0x002f */, | |
520 | TLS_CIPHER_RSA_DHE_AES128_SHA /* 0x0031 */, | |
750f5d99 JM |
521 | TLS_CIPHER_ANON_DH_AES128_SHA /* 0x0034 */, |
522 | TLS_CIPHER_RSA_DHE_AES256_SHA /* 0x0039 */, | |
523 | TLS_CIPHER_AES256_SHA /* 0x0035 */, | |
6fc6879b JM |
524 | }; |
525 | ||
526 | /** | |
527 | * tls_connection_set_cipher_list - Configure acceptable cipher suites | |
528 | * @tls_ctx: TLS context data from tls_init() | |
529 | * @conn: Connection context data from tls_connection_init() | |
530 | * @ciphers: Zero (TLS_CIPHER_NONE) terminated list of allowed ciphers | |
531 | * (TLS_CIPHER_*). | |
532 | * Returns: 0 on success, -1 on failure | |
533 | */ | |
534 | int __must_check tls_connection_set_cipher_list(void *tls_ctx, | |
535 | struct tls_connection *conn, | |
536 | u8 *ciphers); | |
537 | ||
fe1bf329 JM |
538 | /** |
539 | * tls_get_version - Get the current TLS version number | |
540 | * @tls_ctx: TLS context data from tls_init() | |
541 | * @conn: Connection context data from tls_connection_init() | |
542 | * @buf: Buffer for returning the TLS version number | |
543 | * @buflen: buf size | |
544 | * Returns: 0 on success, -1 on failure | |
545 | * | |
546 | * Get the currently used TLS version number. | |
547 | */ | |
548 | int __must_check tls_get_version(void *tls_ctx, struct tls_connection *conn, | |
549 | char *buf, size_t buflen); | |
550 | ||
6fc6879b JM |
551 | /** |
552 | * tls_get_cipher - Get current cipher name | |
553 | * @tls_ctx: TLS context data from tls_init() | |
554 | * @conn: Connection context data from tls_connection_init() | |
555 | * @buf: Buffer for the cipher name | |
556 | * @buflen: buf size | |
557 | * Returns: 0 on success, -1 on failure | |
558 | * | |
559 | * Get the name of the currently used cipher. | |
560 | */ | |
561 | int __must_check tls_get_cipher(void *tls_ctx, struct tls_connection *conn, | |
562 | char *buf, size_t buflen); | |
563 | ||
564 | /** | |
565 | * tls_connection_enable_workaround - Enable TLS workaround options | |
566 | * @tls_ctx: TLS context data from tls_init() | |
567 | * @conn: Connection context data from tls_connection_init() | |
568 | * Returns: 0 on success, -1 on failure | |
569 | * | |
570 | * This function is used to enable connection-specific workaround options for | |
571 | * buffer SSL/TLS implementations. | |
572 | */ | |
573 | int __must_check tls_connection_enable_workaround(void *tls_ctx, | |
574 | struct tls_connection *conn); | |
575 | ||
576 | /** | |
577 | * tls_connection_client_hello_ext - Set TLS extension for ClientHello | |
578 | * @tls_ctx: TLS context data from tls_init() | |
579 | * @conn: Connection context data from tls_connection_init() | |
580 | * @ext_type: Extension type | |
581 | * @data: Extension payload (%NULL to remove extension) | |
582 | * @data_len: Extension payload length | |
583 | * Returns: 0 on success, -1 on failure | |
584 | */ | |
585 | int __must_check tls_connection_client_hello_ext(void *tls_ctx, | |
586 | struct tls_connection *conn, | |
587 | int ext_type, const u8 *data, | |
588 | size_t data_len); | |
589 | ||
590 | /** | |
591 | * tls_connection_get_failed - Get connection failure status | |
592 | * @tls_ctx: TLS context data from tls_init() | |
593 | * @conn: Connection context data from tls_connection_init() | |
594 | * | |
595 | * Returns >0 if connection has failed, 0 if not. | |
596 | */ | |
597 | int tls_connection_get_failed(void *tls_ctx, struct tls_connection *conn); | |
598 | ||
599 | /** | |
600 | * tls_connection_get_read_alerts - Get connection read alert status | |
601 | * @tls_ctx: TLS context data from tls_init() | |
602 | * @conn: Connection context data from tls_connection_init() | |
603 | * Returns: Number of times a fatal read (remote end reported error) has | |
604 | * happened during this connection. | |
605 | */ | |
606 | int tls_connection_get_read_alerts(void *tls_ctx, struct tls_connection *conn); | |
607 | ||
608 | /** | |
609 | * tls_connection_get_write_alerts - Get connection write alert status | |
610 | * @tls_ctx: TLS context data from tls_init() | |
611 | * @conn: Connection context data from tls_connection_init() | |
612 | * Returns: Number of times a fatal write (locally detected error) has happened | |
613 | * during this connection. | |
614 | */ | |
615 | int tls_connection_get_write_alerts(void *tls_ctx, | |
616 | struct tls_connection *conn); | |
617 | ||
6fc6879b JM |
618 | typedef int (*tls_session_ticket_cb) |
619 | (void *ctx, const u8 *ticket, size_t len, const u8 *client_random, | |
620 | const u8 *server_random, u8 *master_secret); | |
621 | ||
622 | int __must_check tls_connection_set_session_ticket_cb( | |
623 | void *tls_ctx, struct tls_connection *conn, | |
624 | tls_session_ticket_cb cb, void *ctx); | |
625 | ||
994afe33 JM |
626 | void tls_connection_set_log_cb(struct tls_connection *conn, |
627 | void (*log_cb)(void *ctx, const char *msg), | |
628 | void *ctx); | |
629 | ||
390b9291 JM |
630 | #define TLS_BREAK_VERIFY_DATA BIT(0) |
631 | #define TLS_BREAK_SRV_KEY_X_HASH BIT(1) | |
632 | #define TLS_BREAK_SRV_KEY_X_SIGNATURE BIT(2) | |
47bd94a0 JM |
633 | #define TLS_DHE_PRIME_511B BIT(3) |
634 | #define TLS_DHE_PRIME_767B BIT(4) | |
635 | #define TLS_DHE_PRIME_15 BIT(5) | |
636 | #define TLS_DHE_PRIME_58B BIT(6) | |
637 | #define TLS_DHE_NON_PRIME BIT(7) | |
390b9291 JM |
638 | |
639 | void tls_connection_set_test_flags(struct tls_connection *conn, u32 flags); | |
640 | ||
a1651451 JM |
641 | int tls_get_library_version(char *buf, size_t buf_len); |
642 | ||
b3b8085a JM |
643 | void tls_connection_set_success_data(struct tls_connection *conn, |
644 | struct wpabuf *data); | |
645 | ||
646 | void tls_connection_set_success_data_resumed(struct tls_connection *conn); | |
647 | ||
648 | const struct wpabuf * | |
649 | tls_connection_get_success_data(struct tls_connection *conn); | |
650 | ||
651 | void tls_connection_remove_session(struct tls_connection *conn); | |
652 | ||
3af37ece JM |
653 | /** |
654 | * tls_get_tls_unique - Fetch "tls-unique" for channel binding | |
655 | * @conn: Connection context data from tls_connection_init() | |
656 | * @buf: Buffer for returning the value | |
657 | * @max_len: Maximum length of the buffer in bytes | |
658 | * Returns: Number of bytes written to buf or -1 on error | |
659 | * | |
660 | * This function can be used to fetch "tls-unique" (RFC 5929, Section 3) which | |
661 | * is the first TLS Finished message sent in the most recent TLS handshake of | |
662 | * the TLS connection. | |
663 | */ | |
664 | int tls_get_tls_unique(struct tls_connection *conn, u8 *buf, size_t max_len); | |
665 | ||
94714ec3 JM |
666 | /** |
667 | * tls_connection_get_cipher_suite - Get current TLS cipher suite | |
668 | * @conn: Connection context data from tls_connection_init() | |
669 | * Returns: TLS cipher suite of the current connection or 0 on error | |
670 | */ | |
671 | u16 tls_connection_get_cipher_suite(struct tls_connection *conn); | |
672 | ||
6fc6879b | 673 | #endif /* TLS_H */ |