1 /* 2 * TLS v1.0/v1.1/v1.2 server (RFC 2246, RFC 4346, RFC 5246) 3 * Copyright (c) 2006-2019, 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 #include "includes.h" 10 11 #include "common.h" 12 #include "crypto/sha1.h" 13 #include "crypto/tls.h" 14 #include "tlsv1_common.h" 15 #include "tlsv1_record.h" 16 #include "tlsv1_server.h" 17 #include "tlsv1_server_i.h" 18 19 /* TODO: 20 * Support for a message fragmented across several records (RFC 2246, 6.2.1) 21 */ 22 23 tlsv1_server_log(struct tlsv1_server * conn,const char * fmt,...)24 void tlsv1_server_log(struct tlsv1_server *conn, const char *fmt, ...) 25 { 26 va_list ap; 27 char *buf; 28 int buflen; 29 30 va_start(ap, fmt); 31 buflen = vsnprintf(NULL, 0, fmt, ap) + 1; 32 va_end(ap); 33 34 buf = os_malloc(buflen); 35 if (buf == NULL) 36 return; 37 va_start(ap, fmt); 38 vsnprintf(buf, buflen, fmt, ap); 39 va_end(ap); 40 41 wpa_printf(MSG_DEBUG, "TLSv1: %s", buf); 42 if (conn->log_cb) 43 conn->log_cb(conn->log_cb_ctx, buf); 44 45 os_free(buf); 46 } 47 48 tlsv1_server_alert(struct tlsv1_server * conn,u8 level,u8 description)49 void tlsv1_server_alert(struct tlsv1_server *conn, u8 level, u8 description) 50 { 51 conn->alert_level = level; 52 conn->alert_description = description; 53 } 54 55 tlsv1_server_derive_keys(struct tlsv1_server * conn,const u8 * pre_master_secret,size_t pre_master_secret_len)56 int tlsv1_server_derive_keys(struct tlsv1_server *conn, 57 const u8 *pre_master_secret, 58 size_t pre_master_secret_len) 59 { 60 u8 seed[2 * TLS_RANDOM_LEN]; 61 u8 key_block[TLS_MAX_KEY_BLOCK_LEN]; 62 u8 *pos; 63 size_t key_block_len; 64 65 if (pre_master_secret) { 66 wpa_hexdump_key(MSG_MSGDUMP, "TLSv1: pre_master_secret", 67 pre_master_secret, pre_master_secret_len); 68 os_memcpy(seed, conn->client_random, TLS_RANDOM_LEN); 69 os_memcpy(seed + TLS_RANDOM_LEN, conn->server_random, 70 TLS_RANDOM_LEN); 71 if (tls_prf(conn->rl.tls_version, 72 pre_master_secret, pre_master_secret_len, 73 "master secret", seed, 2 * TLS_RANDOM_LEN, 74 conn->master_secret, TLS_MASTER_SECRET_LEN)) { 75 wpa_printf(MSG_DEBUG, "TLSv1: Failed to derive " 76 "master_secret"); 77 return -1; 78 } 79 wpa_hexdump_key(MSG_MSGDUMP, "TLSv1: master_secret", 80 conn->master_secret, TLS_MASTER_SECRET_LEN); 81 } 82 83 os_memcpy(seed, conn->server_random, TLS_RANDOM_LEN); 84 os_memcpy(seed + TLS_RANDOM_LEN, conn->client_random, TLS_RANDOM_LEN); 85 key_block_len = 2 * (conn->rl.hash_size + conn->rl.key_material_len + 86 conn->rl.iv_size); 87 if (tls_prf(conn->rl.tls_version, 88 conn->master_secret, TLS_MASTER_SECRET_LEN, 89 "key expansion", seed, 2 * TLS_RANDOM_LEN, 90 key_block, key_block_len)) { 91 wpa_printf(MSG_DEBUG, "TLSv1: Failed to derive key_block"); 92 return -1; 93 } 94 wpa_hexdump_key(MSG_MSGDUMP, "TLSv1: key_block", 95 key_block, key_block_len); 96 97 pos = key_block; 98 99 /* client_write_MAC_secret */ 100 os_memcpy(conn->rl.read_mac_secret, pos, conn->rl.hash_size); 101 pos += conn->rl.hash_size; 102 /* server_write_MAC_secret */ 103 os_memcpy(conn->rl.write_mac_secret, pos, conn->rl.hash_size); 104 pos += conn->rl.hash_size; 105 106 /* client_write_key */ 107 os_memcpy(conn->rl.read_key, pos, conn->rl.key_material_len); 108 pos += conn->rl.key_material_len; 109 /* server_write_key */ 110 os_memcpy(conn->rl.write_key, pos, conn->rl.key_material_len); 111 pos += conn->rl.key_material_len; 112 113 /* client_write_IV */ 114 os_memcpy(conn->rl.read_iv, pos, conn->rl.iv_size); 115 pos += conn->rl.iv_size; 116 /* server_write_IV */ 117 os_memcpy(conn->rl.write_iv, pos, conn->rl.iv_size); 118 pos += conn->rl.iv_size; 119 120 return 0; 121 } 122 123 124 /** 125 * tlsv1_server_handshake - Process TLS handshake 126 * @conn: TLSv1 server connection data from tlsv1_server_init() 127 * @in_data: Input data from TLS peer 128 * @in_len: Input data length 129 * @out_len: Length of the output buffer. 130 * Returns: Pointer to output data, %NULL on failure 131 */ tlsv1_server_handshake(struct tlsv1_server * conn,const u8 * in_data,size_t in_len,size_t * out_len)132 u8 * tlsv1_server_handshake(struct tlsv1_server *conn, 133 const u8 *in_data, size_t in_len, 134 size_t *out_len) 135 { 136 const u8 *pos, *end; 137 u8 *msg = NULL, *in_msg, *in_pos, *in_end, alert, ct; 138 size_t in_msg_len; 139 int used; 140 141 if (in_data == NULL || in_len == 0) { 142 wpa_printf(MSG_DEBUG, "TLSv1: No input data to server"); 143 return NULL; 144 } 145 146 pos = in_data; 147 end = in_data + in_len; 148 in_msg = os_malloc(in_len); 149 if (in_msg == NULL) 150 return NULL; 151 152 /* Each received packet may include multiple records */ 153 while (pos < end) { 154 in_msg_len = in_len; 155 used = tlsv1_record_receive(&conn->rl, pos, end - pos, 156 in_msg, &in_msg_len, &alert); 157 if (used < 0) { 158 wpa_printf(MSG_DEBUG, "TLSv1: Processing received " 159 "record failed"); 160 tlsv1_server_alert(conn, TLS_ALERT_LEVEL_FATAL, alert); 161 goto failed; 162 } 163 if (used == 0) { 164 /* need more data */ 165 wpa_printf(MSG_DEBUG, "TLSv1: Partial processing not " 166 "yet supported"); 167 tlsv1_server_alert(conn, TLS_ALERT_LEVEL_FATAL, 168 TLS_ALERT_INTERNAL_ERROR); 169 goto failed; 170 } 171 ct = pos[0]; 172 173 in_pos = in_msg; 174 in_end = in_msg + in_msg_len; 175 176 /* Each received record may include multiple messages of the 177 * same ContentType. */ 178 while (in_pos < in_end) { 179 in_msg_len = in_end - in_pos; 180 if (tlsv1_server_process_handshake(conn, ct, in_pos, 181 &in_msg_len) < 0) 182 goto failed; 183 in_pos += in_msg_len; 184 } 185 186 pos += used; 187 } 188 189 os_free(in_msg); 190 in_msg = NULL; 191 192 msg = tlsv1_server_handshake_write(conn, out_len); 193 194 failed: 195 os_free(in_msg); 196 if (conn->alert_level) { 197 if (conn->state == FAILED) { 198 /* Avoid alert loops */ 199 wpa_printf(MSG_DEBUG, "TLSv1: Drop alert loop"); 200 os_free(msg); 201 return NULL; 202 } 203 conn->state = FAILED; 204 os_free(msg); 205 msg = tlsv1_server_send_alert(conn, conn->alert_level, 206 conn->alert_description, 207 out_len); 208 conn->write_alerts++; 209 } 210 211 return msg; 212 } 213 214 215 /** 216 * tlsv1_server_encrypt - Encrypt data into TLS tunnel 217 * @conn: TLSv1 server connection data from tlsv1_server_init() 218 * @in_data: Pointer to plaintext data to be encrypted 219 * @in_len: Input buffer length 220 * @out_data: Pointer to output buffer (encrypted TLS data) 221 * @out_len: Maximum out_data length 222 * Returns: Number of bytes written to out_data, -1 on failure 223 * 224 * This function is used after TLS handshake has been completed successfully to 225 * send data in the encrypted tunnel. 226 */ tlsv1_server_encrypt(struct tlsv1_server * conn,const u8 * in_data,size_t in_len,u8 * out_data,size_t out_len)227 int tlsv1_server_encrypt(struct tlsv1_server *conn, 228 const u8 *in_data, size_t in_len, 229 u8 *out_data, size_t out_len) 230 { 231 size_t rlen; 232 233 wpa_hexdump_key(MSG_MSGDUMP, "TLSv1: Plaintext AppData", 234 in_data, in_len); 235 236 if (tlsv1_record_send(&conn->rl, TLS_CONTENT_TYPE_APPLICATION_DATA, 237 out_data, out_len, in_data, in_len, &rlen) < 0) { 238 wpa_printf(MSG_DEBUG, "TLSv1: Failed to create a record"); 239 tlsv1_server_alert(conn, TLS_ALERT_LEVEL_FATAL, 240 TLS_ALERT_INTERNAL_ERROR); 241 return -1; 242 } 243 244 return rlen; 245 } 246 247 248 /** 249 * tlsv1_server_decrypt - Decrypt data from TLS tunnel 250 * @conn: TLSv1 server connection data from tlsv1_server_init() 251 * @in_data: Pointer to input buffer (encrypted TLS data) 252 * @in_len: Input buffer length 253 * @out_data: Pointer to output buffer (decrypted data from TLS tunnel) 254 * @out_len: Maximum out_data length 255 * Returns: Number of bytes written to out_data, -1 on failure 256 * 257 * This function is used after TLS handshake has been completed successfully to 258 * receive data from the encrypted tunnel. 259 */ tlsv1_server_decrypt(struct tlsv1_server * conn,const u8 * in_data,size_t in_len,u8 * out_data,size_t out_len)260 int tlsv1_server_decrypt(struct tlsv1_server *conn, 261 const u8 *in_data, size_t in_len, 262 u8 *out_data, size_t out_len) 263 { 264 const u8 *in_end, *pos; 265 int used; 266 u8 alert, *out_end, *out_pos, ct; 267 size_t olen; 268 269 pos = in_data; 270 in_end = in_data + in_len; 271 out_pos = out_data; 272 out_end = out_data + out_len; 273 274 while (pos < in_end) { 275 ct = pos[0]; 276 olen = out_end - out_pos; 277 used = tlsv1_record_receive(&conn->rl, pos, in_end - pos, 278 out_pos, &olen, &alert); 279 if (used < 0) { 280 tlsv1_server_log(conn, "Record layer processing failed"); 281 tlsv1_server_alert(conn, TLS_ALERT_LEVEL_FATAL, alert); 282 return -1; 283 } 284 if (used == 0) { 285 /* need more data */ 286 wpa_printf(MSG_DEBUG, "TLSv1: Partial processing not " 287 "yet supported"); 288 tlsv1_server_alert(conn, TLS_ALERT_LEVEL_FATAL, alert); 289 return -1; 290 } 291 292 if (ct == TLS_CONTENT_TYPE_ALERT) { 293 if (olen < 2) { 294 tlsv1_server_log(conn, "Alert underflow"); 295 tlsv1_server_alert(conn, TLS_ALERT_LEVEL_FATAL, 296 TLS_ALERT_DECODE_ERROR); 297 return -1; 298 } 299 tlsv1_server_log(conn, "Received alert %d:%d", 300 out_pos[0], out_pos[1]); 301 conn->read_alerts++; 302 if (out_pos[0] == TLS_ALERT_LEVEL_WARNING) { 303 /* Continue processing */ 304 pos += used; 305 continue; 306 } 307 308 tlsv1_server_alert(conn, TLS_ALERT_LEVEL_FATAL, 309 out_pos[1]); 310 return -1; 311 } 312 313 if (ct != TLS_CONTENT_TYPE_APPLICATION_DATA) { 314 tlsv1_server_log(conn, "Unexpected content type 0x%x", 315 pos[0]); 316 tlsv1_server_alert(conn, TLS_ALERT_LEVEL_FATAL, 317 TLS_ALERT_UNEXPECTED_MESSAGE); 318 return -1; 319 } 320 321 #ifdef CONFIG_TESTING_OPTIONS 322 if ((conn->test_flags & 323 (TLS_BREAK_VERIFY_DATA | TLS_BREAK_SRV_KEY_X_HASH | 324 TLS_BREAK_SRV_KEY_X_SIGNATURE)) && 325 !conn->test_failure_reported) { 326 tlsv1_server_log(conn, "TEST-FAILURE: Client ApplData received after invalid handshake"); 327 conn->test_failure_reported = 1; 328 } 329 #endif /* CONFIG_TESTING_OPTIONS */ 330 331 out_pos += olen; 332 if (out_pos > out_end) { 333 wpa_printf(MSG_DEBUG, "TLSv1: Buffer not large enough " 334 "for processing the received record"); 335 tlsv1_server_alert(conn, TLS_ALERT_LEVEL_FATAL, 336 TLS_ALERT_INTERNAL_ERROR); 337 return -1; 338 } 339 340 pos += used; 341 } 342 343 return out_pos - out_data; 344 } 345 346 347 /** 348 * tlsv1_server_global_init - Initialize TLSv1 server 349 * Returns: 0 on success, -1 on failure 350 * 351 * This function must be called before using any other TLSv1 server functions. 352 */ tlsv1_server_global_init(void)353 int tlsv1_server_global_init(void) 354 { 355 return crypto_global_init(); 356 } 357 358 359 /** 360 * tlsv1_server_global_deinit - Deinitialize TLSv1 server 361 * 362 * This function can be used to deinitialize the TLSv1 server that was 363 * initialized by calling tlsv1_server_global_init(). No TLSv1 server functions 364 * can be called after this before calling tlsv1_server_global_init() again. 365 */ tlsv1_server_global_deinit(void)366 void tlsv1_server_global_deinit(void) 367 { 368 crypto_global_deinit(); 369 } 370 371 372 /** 373 * tlsv1_server_init - Initialize TLSv1 server connection 374 * @cred: Pointer to server credentials from tlsv1_server_cred_alloc() 375 * Returns: Pointer to TLSv1 server connection data or %NULL on failure 376 */ tlsv1_server_init(struct tlsv1_credentials * cred)377 struct tlsv1_server * tlsv1_server_init(struct tlsv1_credentials *cred) 378 { 379 struct tlsv1_server *conn; 380 size_t count; 381 u16 *suites; 382 383 conn = os_zalloc(sizeof(*conn)); 384 if (conn == NULL) 385 return NULL; 386 387 conn->cred = cred; 388 389 conn->state = CLIENT_HELLO; 390 391 if (tls_verify_hash_init(&conn->verify) < 0) { 392 wpa_printf(MSG_DEBUG, "TLSv1: Failed to initialize verify " 393 "hash"); 394 os_free(conn); 395 return NULL; 396 } 397 398 count = 0; 399 suites = conn->cipher_suites; 400 suites[count++] = TLS_DHE_RSA_WITH_AES_256_CBC_SHA256; 401 suites[count++] = TLS_RSA_WITH_AES_256_CBC_SHA256; 402 suites[count++] = TLS_DHE_RSA_WITH_AES_256_CBC_SHA; 403 suites[count++] = TLS_RSA_WITH_AES_256_CBC_SHA; 404 suites[count++] = TLS_DHE_RSA_WITH_AES_128_CBC_SHA256; 405 suites[count++] = TLS_RSA_WITH_AES_128_CBC_SHA256; 406 suites[count++] = TLS_DHE_RSA_WITH_AES_128_CBC_SHA; 407 suites[count++] = TLS_RSA_WITH_AES_128_CBC_SHA; 408 suites[count++] = TLS_DHE_RSA_WITH_3DES_EDE_CBC_SHA; 409 suites[count++] = TLS_RSA_WITH_3DES_EDE_CBC_SHA; 410 suites[count++] = TLS_RSA_WITH_RC4_128_SHA; 411 suites[count++] = TLS_RSA_WITH_RC4_128_MD5; 412 conn->num_cipher_suites = count; 413 414 return conn; 415 } 416 417 tlsv1_server_clear_data(struct tlsv1_server * conn)418 static void tlsv1_server_clear_data(struct tlsv1_server *conn) 419 { 420 tlsv1_record_set_cipher_suite(&conn->rl, TLS_NULL_WITH_NULL_NULL); 421 tlsv1_record_change_write_cipher(&conn->rl); 422 tlsv1_record_change_read_cipher(&conn->rl); 423 tls_verify_hash_free(&conn->verify); 424 425 crypto_public_key_free(conn->client_rsa_key); 426 conn->client_rsa_key = NULL; 427 428 os_free(conn->session_ticket); 429 conn->session_ticket = NULL; 430 conn->session_ticket_len = 0; 431 conn->use_session_ticket = 0; 432 433 os_free(conn->dh_secret); 434 conn->dh_secret = NULL; 435 conn->dh_secret_len = 0; 436 } 437 438 439 /** 440 * tlsv1_server_deinit - Deinitialize TLSv1 server connection 441 * @conn: TLSv1 server connection data from tlsv1_server_init() 442 */ tlsv1_server_deinit(struct tlsv1_server * conn)443 void tlsv1_server_deinit(struct tlsv1_server *conn) 444 { 445 tlsv1_server_clear_data(conn); 446 os_free(conn); 447 } 448 449 450 /** 451 * tlsv1_server_established - Check whether connection has been established 452 * @conn: TLSv1 server connection data from tlsv1_server_init() 453 * Returns: 1 if connection is established, 0 if not 454 */ tlsv1_server_established(struct tlsv1_server * conn)455 int tlsv1_server_established(struct tlsv1_server *conn) 456 { 457 return conn->state == ESTABLISHED; 458 } 459 460 461 /** 462 * tlsv1_server_prf - Use TLS-PRF to derive keying material 463 * @conn: TLSv1 server connection data from tlsv1_server_init() 464 * @label: Label (e.g., description of the key) for PRF 465 * @context: Optional extra upper-layer context (max len 2^16) 466 * @context_len: The length of the context value 467 * @server_random_first: seed is 0 = client_random|server_random, 468 * 1 = server_random|client_random 469 * @out: Buffer for output data from TLS-PRF 470 * @out_len: Length of the output buffer 471 * Returns: 0 on success, -1 on failure 472 */ tlsv1_server_prf(struct tlsv1_server * conn,const char * label,const u8 * context,size_t context_len,int server_random_first,u8 * out,size_t out_len)473 int tlsv1_server_prf(struct tlsv1_server *conn, const char *label, 474 const u8 *context, size_t context_len, 475 int server_random_first, u8 *out, size_t out_len) 476 { 477 u8 *seed, *pos; 478 size_t seed_len = 2 * TLS_RANDOM_LEN; 479 int res; 480 481 if (conn->state != ESTABLISHED) 482 return -1; 483 484 if (context_len > 65535) 485 return -1; 486 487 if (context) 488 seed_len += 2 + context_len; 489 490 seed = os_malloc(seed_len); 491 if (!seed) 492 return -1; 493 494 if (server_random_first) { 495 os_memcpy(seed, conn->server_random, TLS_RANDOM_LEN); 496 os_memcpy(seed + TLS_RANDOM_LEN, conn->client_random, 497 TLS_RANDOM_LEN); 498 } else { 499 os_memcpy(seed, conn->client_random, TLS_RANDOM_LEN); 500 os_memcpy(seed + TLS_RANDOM_LEN, conn->server_random, 501 TLS_RANDOM_LEN); 502 } 503 504 if (context) { 505 pos = seed + 2 * TLS_RANDOM_LEN; 506 WPA_PUT_BE16(pos, context_len); 507 pos += 2; 508 os_memcpy(pos, context, context_len); 509 } 510 511 res = tls_prf(conn->rl.tls_version, 512 conn->master_secret, TLS_MASTER_SECRET_LEN, 513 label, seed, seed_len, out, out_len); 514 os_free(seed); 515 return res; 516 } 517 518 519 /** 520 * tlsv1_server_get_cipher - Get current cipher name 521 * @conn: TLSv1 server connection data from tlsv1_server_init() 522 * @buf: Buffer for the cipher name 523 * @buflen: buf size 524 * Returns: 0 on success, -1 on failure 525 * 526 * Get the name of the currently used cipher. 527 */ tlsv1_server_get_cipher(struct tlsv1_server * conn,char * buf,size_t buflen)528 int tlsv1_server_get_cipher(struct tlsv1_server *conn, char *buf, 529 size_t buflen) 530 { 531 char *cipher; 532 533 switch (conn->rl.cipher_suite) { 534 case TLS_RSA_WITH_RC4_128_MD5: 535 cipher = "RC4-MD5"; 536 break; 537 case TLS_RSA_WITH_RC4_128_SHA: 538 cipher = "RC4-SHA"; 539 break; 540 case TLS_RSA_WITH_DES_CBC_SHA: 541 cipher = "DES-CBC-SHA"; 542 break; 543 case TLS_RSA_WITH_3DES_EDE_CBC_SHA: 544 cipher = "DES-CBC3-SHA"; 545 break; 546 case TLS_DHE_RSA_WITH_DES_CBC_SHA: 547 cipher = "DHE-RSA-DES-CBC-SHA"; 548 break; 549 case TLS_DHE_RSA_WITH_3DES_EDE_CBC_SHA: 550 cipher = "DHE-RSA-DES-CBC3-SHA"; 551 break; 552 case TLS_DH_anon_WITH_RC4_128_MD5: 553 cipher = "ADH-RC4-MD5"; 554 break; 555 case TLS_DH_anon_WITH_DES_CBC_SHA: 556 cipher = "ADH-DES-SHA"; 557 break; 558 case TLS_DH_anon_WITH_3DES_EDE_CBC_SHA: 559 cipher = "ADH-DES-CBC3-SHA"; 560 break; 561 case TLS_RSA_WITH_AES_128_CBC_SHA: 562 cipher = "AES-128-SHA"; 563 break; 564 case TLS_DHE_RSA_WITH_AES_128_CBC_SHA: 565 cipher = "DHE-RSA-AES-128-SHA"; 566 break; 567 case TLS_DH_anon_WITH_AES_128_CBC_SHA: 568 cipher = "ADH-AES-128-SHA"; 569 break; 570 case TLS_RSA_WITH_AES_256_CBC_SHA: 571 cipher = "AES-256-SHA"; 572 break; 573 case TLS_DHE_RSA_WITH_AES_256_CBC_SHA: 574 cipher = "DHE-RSA-AES-256-SHA"; 575 break; 576 case TLS_DH_anon_WITH_AES_256_CBC_SHA: 577 cipher = "ADH-AES-256-SHA"; 578 break; 579 case TLS_RSA_WITH_AES_128_CBC_SHA256: 580 cipher = "AES-128-SHA256"; 581 break; 582 case TLS_RSA_WITH_AES_256_CBC_SHA256: 583 cipher = "AES-256-SHA256"; 584 break; 585 case TLS_DHE_RSA_WITH_AES_128_CBC_SHA256: 586 cipher = "DHE-RSA-AES-128-SHA256"; 587 break; 588 case TLS_DHE_RSA_WITH_AES_256_CBC_SHA256: 589 cipher = "DHE-RSA-AES-256-SHA256"; 590 break; 591 case TLS_DH_anon_WITH_AES_128_CBC_SHA256: 592 cipher = "ADH-AES-128-SHA256"; 593 break; 594 case TLS_DH_anon_WITH_AES_256_CBC_SHA256: 595 cipher = "ADH-AES-256-SHA256"; 596 break; 597 default: 598 return -1; 599 } 600 601 if (os_strlcpy(buf, cipher, buflen) >= buflen) 602 return -1; 603 return 0; 604 } 605 606 607 /** 608 * tlsv1_server_shutdown - Shutdown TLS connection 609 * @conn: TLSv1 server connection data from tlsv1_server_init() 610 * Returns: 0 on success, -1 on failure 611 */ tlsv1_server_shutdown(struct tlsv1_server * conn)612 int tlsv1_server_shutdown(struct tlsv1_server *conn) 613 { 614 conn->state = CLIENT_HELLO; 615 616 if (tls_verify_hash_init(&conn->verify) < 0) { 617 wpa_printf(MSG_DEBUG, "TLSv1: Failed to re-initialize verify " 618 "hash"); 619 return -1; 620 } 621 622 tlsv1_server_clear_data(conn); 623 624 return 0; 625 } 626 627 628 /** 629 * tlsv1_server_resumed - Was session resumption used 630 * @conn: TLSv1 server connection data from tlsv1_server_init() 631 * Returns: 1 if current session used session resumption, 0 if not 632 */ tlsv1_server_resumed(struct tlsv1_server * conn)633 int tlsv1_server_resumed(struct tlsv1_server *conn) 634 { 635 return 0; 636 } 637 638 639 /** 640 * tlsv1_server_get_random - Get random data from TLS connection 641 * @conn: TLSv1 server connection data from tlsv1_server_init() 642 * @keys: Structure of random data (filled on success) 643 * Returns: 0 on success, -1 on failure 644 */ tlsv1_server_get_random(struct tlsv1_server * conn,struct tls_random * keys)645 int tlsv1_server_get_random(struct tlsv1_server *conn, struct tls_random *keys) 646 { 647 os_memset(keys, 0, sizeof(*keys)); 648 if (conn->state == CLIENT_HELLO) 649 return -1; 650 651 keys->client_random = conn->client_random; 652 keys->client_random_len = TLS_RANDOM_LEN; 653 654 if (conn->state != SERVER_HELLO) { 655 keys->server_random = conn->server_random; 656 keys->server_random_len = TLS_RANDOM_LEN; 657 } 658 659 return 0; 660 } 661 662 663 /** 664 * tlsv1_server_get_keyblock_size - Get TLS key_block size 665 * @conn: TLSv1 server connection data from tlsv1_server_init() 666 * Returns: Size of the key_block for the negotiated cipher suite or -1 on 667 * failure 668 */ tlsv1_server_get_keyblock_size(struct tlsv1_server * conn)669 int tlsv1_server_get_keyblock_size(struct tlsv1_server *conn) 670 { 671 if (conn->state == CLIENT_HELLO || conn->state == SERVER_HELLO) 672 return -1; 673 674 return 2 * (conn->rl.hash_size + conn->rl.key_material_len + 675 conn->rl.iv_size); 676 } 677 678 679 /** 680 * tlsv1_server_set_cipher_list - Configure acceptable cipher suites 681 * @conn: TLSv1 server connection data from tlsv1_server_init() 682 * @ciphers: Zero (TLS_CIPHER_NONE) terminated list of allowed ciphers 683 * (TLS_CIPHER_*). 684 * Returns: 0 on success, -1 on failure 685 */ tlsv1_server_set_cipher_list(struct tlsv1_server * conn,u8 * ciphers)686 int tlsv1_server_set_cipher_list(struct tlsv1_server *conn, u8 *ciphers) 687 { 688 size_t count; 689 u16 *suites; 690 691 /* TODO: implement proper configuration of cipher suites */ 692 if (ciphers[0] == TLS_CIPHER_ANON_DH_AES128_SHA) { 693 count = 0; 694 suites = conn->cipher_suites; 695 suites[count++] = TLS_RSA_WITH_AES_256_CBC_SHA; 696 suites[count++] = TLS_RSA_WITH_AES_128_CBC_SHA; 697 suites[count++] = TLS_RSA_WITH_3DES_EDE_CBC_SHA; 698 suites[count++] = TLS_RSA_WITH_RC4_128_SHA; 699 suites[count++] = TLS_RSA_WITH_RC4_128_MD5; 700 suites[count++] = TLS_DH_anon_WITH_AES_256_CBC_SHA; 701 suites[count++] = TLS_DH_anon_WITH_AES_128_CBC_SHA; 702 suites[count++] = TLS_DH_anon_WITH_3DES_EDE_CBC_SHA; 703 suites[count++] = TLS_DH_anon_WITH_RC4_128_MD5; 704 suites[count++] = TLS_DH_anon_WITH_DES_CBC_SHA; 705 conn->num_cipher_suites = count; 706 } 707 708 return 0; 709 } 710 711 tlsv1_server_set_verify(struct tlsv1_server * conn,int verify_peer)712 int tlsv1_server_set_verify(struct tlsv1_server *conn, int verify_peer) 713 { 714 conn->verify_peer = verify_peer; 715 return 0; 716 } 717 718 tlsv1_server_set_session_ticket_cb(struct tlsv1_server * conn,tlsv1_server_session_ticket_cb cb,void * ctx)719 void tlsv1_server_set_session_ticket_cb(struct tlsv1_server *conn, 720 tlsv1_server_session_ticket_cb cb, 721 void *ctx) 722 { 723 wpa_printf(MSG_DEBUG, "TLSv1: SessionTicket callback set %p (ctx %p)", 724 cb, ctx); 725 conn->session_ticket_cb = cb; 726 conn->session_ticket_cb_ctx = ctx; 727 } 728 729 tlsv1_server_set_log_cb(struct tlsv1_server * conn,void (* cb)(void * ctx,const char * msg),void * ctx)730 void tlsv1_server_set_log_cb(struct tlsv1_server *conn, 731 void (*cb)(void *ctx, const char *msg), void *ctx) 732 { 733 conn->log_cb = cb; 734 conn->log_cb_ctx = ctx; 735 } 736 737 tlsv1_server_get_failed(struct tlsv1_server * conn)738 int tlsv1_server_get_failed(struct tlsv1_server *conn) 739 { 740 return conn->state == FAILED; 741 } 742 743 tlsv1_server_get_read_alerts(struct tlsv1_server * conn)744 int tlsv1_server_get_read_alerts(struct tlsv1_server *conn) 745 { 746 return conn->read_alerts; 747 } 748 749 tlsv1_server_get_write_alerts(struct tlsv1_server * conn)750 int tlsv1_server_get_write_alerts(struct tlsv1_server *conn) 751 { 752 return conn->write_alerts; 753 } 754 755 756 #ifdef CONFIG_TESTING_OPTIONS tlsv1_server_set_test_flags(struct tlsv1_server * conn,u32 flags)757 void tlsv1_server_set_test_flags(struct tlsv1_server *conn, u32 flags) 758 { 759 conn->test_flags = flags; 760 } 761 762 763 static const u8 test_tls_prime15[1] = { 764 15 765 }; 766 767 static const u8 test_tls_prime511b[64] = { 768 0x50, 0xfb, 0xf1, 0xae, 0x01, 0xf1, 0xfe, 0xe6, 769 0xe1, 0xae, 0xdc, 0x1e, 0xbe, 0xfb, 0x9e, 0x58, 770 0x9a, 0xd7, 0x54, 0x9d, 0x6b, 0xb3, 0x78, 0xe2, 771 0x39, 0x7f, 0x30, 0x01, 0x25, 0xa1, 0xf9, 0x7c, 772 0x55, 0x0e, 0xa1, 0x15, 0xcc, 0x36, 0x34, 0xbb, 773 0x6c, 0x8b, 0x64, 0x45, 0x15, 0x7f, 0xd3, 0xe7, 774 0x31, 0xc8, 0x8e, 0x56, 0x8e, 0x95, 0xdc, 0xea, 775 0x9e, 0xdf, 0xf7, 0x56, 0xdd, 0xb0, 0x34, 0xdb 776 }; 777 778 static const u8 test_tls_prime767b[96] = { 779 0x4c, 0xdc, 0xb8, 0x21, 0x20, 0x9d, 0xe8, 0xa3, 780 0x53, 0xd9, 0x1c, 0x18, 0xc1, 0x3a, 0x58, 0x67, 781 0xa7, 0x85, 0xf9, 0x28, 0x9b, 0xce, 0xc0, 0xd1, 782 0x05, 0x84, 0x61, 0x97, 0xb2, 0x86, 0x1c, 0xd0, 783 0xd1, 0x96, 0x23, 0x29, 0x8c, 0xc5, 0x30, 0x68, 784 0x3e, 0xf9, 0x05, 0xba, 0x60, 0xeb, 0xdb, 0xee, 785 0x2d, 0xdf, 0x84, 0x65, 0x49, 0x87, 0x90, 0x2a, 786 0xc9, 0x8e, 0x34, 0x63, 0x6d, 0x9a, 0x2d, 0x32, 787 0x1c, 0x46, 0xd5, 0x4e, 0x20, 0x20, 0x90, 0xac, 788 0xd5, 0x48, 0x79, 0x99, 0x0c, 0xe6, 0xed, 0xbf, 789 0x79, 0xc2, 0x47, 0x50, 0x95, 0x38, 0x38, 0xbc, 790 0xde, 0xb0, 0xd2, 0xe8, 0x97, 0xcb, 0x22, 0xbb 791 }; 792 793 static const u8 test_tls_prime58[128] = { 794 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 795 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 796 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 797 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 798 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 799 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 800 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 801 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 802 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 803 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 804 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 805 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 806 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 807 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 808 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 809 0x03, 0xc1, 0xba, 0xc8, 0x25, 0xbe, 0x2d, 0xf3 810 }; 811 812 static const u8 test_tls_non_prime[] = { 813 /* 814 * This is not a prime and the value has the following factors: 815 * 13736783488716579923 * 16254860191773456563 * 18229434976173670763 * 816 * 11112313018289079419 * 10260802278580253339 * 12394009491575311499 * 817 * 12419059668711064739 * 14317973192687985827 * 10498605410533203179 * 818 * 16338688760390249003 * 11128963991123878883 * 12990532258280301419 * 819 * 3 820 */ 821 0x0C, 0x8C, 0x36, 0x9C, 0x6F, 0x71, 0x2E, 0xA7, 822 0xAB, 0x32, 0xD3, 0x0F, 0x68, 0x3D, 0xB2, 0x6D, 823 0x81, 0xDD, 0xC4, 0x84, 0x0D, 0x9C, 0x6E, 0x36, 824 0x29, 0x70, 0xF3, 0x1E, 0x9A, 0x42, 0x0B, 0x67, 825 0x82, 0x6B, 0xB1, 0xF2, 0xAF, 0x55, 0x28, 0xE7, 826 0xDB, 0x67, 0x6C, 0xF7, 0x6B, 0xAC, 0xAC, 0xE5, 827 0xF7, 0x9F, 0xD4, 0x63, 0x55, 0x70, 0x32, 0x7C, 828 0x70, 0xFB, 0xAF, 0xB8, 0xEB, 0x37, 0xCF, 0x3F, 829 0xFE, 0x94, 0x73, 0xF9, 0x7A, 0xC7, 0x12, 0x2E, 830 0x9B, 0xB4, 0x7D, 0x08, 0x60, 0x83, 0x43, 0x52, 831 0x83, 0x1E, 0xA5, 0xFC, 0xFA, 0x87, 0x12, 0xF4, 832 0x64, 0xE2, 0xCE, 0x71, 0x17, 0x72, 0xB6, 0xAB 833 }; 834 835 #endif /* CONFIG_TESTING_OPTIONS */ 836 837 tlsv1_server_get_dh_p(struct tlsv1_server * conn,const u8 ** dh_p,size_t * dh_p_len)838 void tlsv1_server_get_dh_p(struct tlsv1_server *conn, const u8 **dh_p, 839 size_t *dh_p_len) 840 { 841 *dh_p = conn->cred->dh_p; 842 *dh_p_len = conn->cred->dh_p_len; 843 844 #ifdef CONFIG_TESTING_OPTIONS 845 if (conn->test_flags & TLS_DHE_PRIME_511B) { 846 tlsv1_server_log(conn, "TESTING: Use short 511-bit prime with DHE"); 847 *dh_p = test_tls_prime511b; 848 *dh_p_len = sizeof(test_tls_prime511b); 849 } else if (conn->test_flags & TLS_DHE_PRIME_767B) { 850 tlsv1_server_log(conn, "TESTING: Use short 767-bit prime with DHE"); 851 *dh_p = test_tls_prime767b; 852 *dh_p_len = sizeof(test_tls_prime767b); 853 } else if (conn->test_flags & TLS_DHE_PRIME_15) { 854 tlsv1_server_log(conn, "TESTING: Use bogus 15 \"prime\" with DHE"); 855 *dh_p = test_tls_prime15; 856 *dh_p_len = sizeof(test_tls_prime15); 857 } else if (conn->test_flags & TLS_DHE_PRIME_58B) { 858 tlsv1_server_log(conn, "TESTING: Use short 58-bit prime in long container with DHE"); 859 *dh_p = test_tls_prime58; 860 *dh_p_len = sizeof(test_tls_prime58); 861 } else if (conn->test_flags & TLS_DHE_NON_PRIME) { 862 tlsv1_server_log(conn, "TESTING: Use claim non-prime as the DHE prime"); 863 *dh_p = test_tls_non_prime; 864 *dh_p_len = sizeof(test_tls_non_prime); 865 } 866 #endif /* CONFIG_TESTING_OPTIONS */ 867 } 868