1 /* Copyright (C) 1995-1998 Eric Young (eay (at) cryptsoft.com) 2 * All rights reserved. 3 * 4 * This package is an SSL implementation written 5 * by Eric Young (eay (at) cryptsoft.com). 6 * The implementation was written so as to conform with Netscapes SSL. 7 * 8 * This library is free for commercial and non-commercial use as long as 9 * the following conditions are aheared to. The following conditions 10 * apply to all code found in this distribution, be it the RC4, RSA, 11 * lhash, DES, etc., code; not just the SSL code. The SSL documentation 12 * included with this distribution is covered by the same copyright terms 13 * except that the holder is Tim Hudson (tjh (at) cryptsoft.com). 14 * 15 * Copyright remains Eric Young's, and as such any Copyright notices in 16 * the code are not to be removed. 17 * If this package is used in a product, Eric Young should be given attribution 18 * as the author of the parts of the library used. 19 * This can be in the form of a textual message at program startup or 20 * in documentation (online or textual) provided with the package. 21 * 22 * Redistribution and use in source and binary forms, with or without 23 * modification, are permitted provided that the following conditions 24 * are met: 25 * 1. Redistributions of source code must retain the copyright 26 * notice, this list of conditions and the following disclaimer. 27 * 2. Redistributions in binary form must reproduce the above copyright 28 * notice, this list of conditions and the following disclaimer in the 29 * documentation and/or other materials provided with the distribution. 30 * 3. All advertising materials mentioning features or use of this software 31 * must display the following acknowledgement: 32 * "This product includes cryptographic software written by 33 * Eric Young (eay (at) cryptsoft.com)" 34 * The word 'cryptographic' can be left out if the rouines from the library 35 * being used are not cryptographic related :-). 36 * 4. If you include any Windows specific code (or a derivative thereof) from 37 * the apps directory (application code) you must include an acknowledgement: 38 * "This product includes software written by Tim Hudson (tjh (at) cryptsoft.com)" 39 * 40 * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND 41 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 42 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 43 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 44 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 45 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 46 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 47 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 48 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 49 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 50 * SUCH DAMAGE. 51 * 52 * The licence and distribution terms for any publically available version or 53 * derivative of this code cannot be changed. i.e. this code cannot simply be 54 * copied and put under another distribution licence 55 * [including the GNU Public Licence.] 56 */ 57 /* ==================================================================== 58 * Copyright (c) 1998-2002 The OpenSSL Project. All rights reserved. 59 * 60 * Redistribution and use in source and binary forms, with or without 61 * modification, are permitted provided that the following conditions 62 * are met: 63 * 64 * 1. Redistributions of source code must retain the above copyright 65 * notice, this list of conditions and the following disclaimer. 66 * 67 * 2. Redistributions in binary form must reproduce the above copyright 68 * notice, this list of conditions and the following disclaimer in 69 * the documentation and/or other materials provided with the 70 * distribution. 71 * 72 * 3. All advertising materials mentioning features or use of this 73 * software must display the following acknowledgment: 74 * "This product includes software developed by the OpenSSL Project 75 * for use in the OpenSSL Toolkit. (http://www.openssl.org/)" 76 * 77 * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to 78 * endorse or promote products derived from this software without 79 * prior written permission. For written permission, please contact 80 * openssl-core (at) openssl.org. 81 * 82 * 5. Products derived from this software may not be called "OpenSSL" 83 * nor may "OpenSSL" appear in their names without prior written 84 * permission of the OpenSSL Project. 85 * 86 * 6. Redistributions of any form whatsoever must retain the following 87 * acknowledgment: 88 * "This product includes software developed by the OpenSSL Project 89 * for use in the OpenSSL Toolkit (http://www.openssl.org/)" 90 * 91 * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY 92 * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 93 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 94 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OpenSSL PROJECT OR 95 * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 96 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 97 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; 98 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 99 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, 100 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 101 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED 102 * OF THE POSSIBILITY OF SUCH DAMAGE. 103 * ==================================================================== 104 * 105 * This product includes cryptographic software written by Eric Young 106 * (eay (at) cryptsoft.com). This product includes software written by Tim 107 * Hudson (tjh (at) cryptsoft.com). */ 108 109 #include <openssl/ssl.h> 110 111 #include <assert.h> 112 #include <limits.h> 113 #include <string.h> 114 115 #include <openssl/buf.h> 116 #include <openssl/err.h> 117 #include <openssl/evp.h> 118 #include <openssl/mem.h> 119 #include <openssl/rand.h> 120 121 #include "../crypto/internal.h" 122 #include "internal.h" 123 124 125 static int do_ssl3_write(SSL *ssl, int type, const uint8_t *buf, unsigned len); 126 127 /* ssl3_get_record reads a new input record. On success, it places it in 128 * |ssl->s3->rrec| and returns one. Otherwise it returns <= 0 on error or if 129 * more data is needed. */ 130 static int ssl3_get_record(SSL *ssl) { 131 again: 132 switch (ssl->s3->recv_shutdown) { 133 case ssl_shutdown_none: 134 break; 135 case ssl_shutdown_fatal_alert: 136 OPENSSL_PUT_ERROR(SSL, SSL_R_PROTOCOL_IS_SHUTDOWN); 137 return -1; 138 case ssl_shutdown_close_notify: 139 return 0; 140 } 141 142 CBS body; 143 uint8_t type, alert = SSL_AD_DECODE_ERROR; 144 size_t consumed; 145 enum ssl_open_record_t open_ret = 146 tls_open_record(ssl, &type, &body, &consumed, &alert, 147 ssl_read_buffer(ssl), ssl_read_buffer_len(ssl)); 148 if (open_ret != ssl_open_record_partial) { 149 ssl_read_buffer_consume(ssl, consumed); 150 } 151 switch (open_ret) { 152 case ssl_open_record_partial: { 153 int read_ret = ssl_read_buffer_extend_to(ssl, consumed); 154 if (read_ret <= 0) { 155 return read_ret; 156 } 157 goto again; 158 } 159 160 case ssl_open_record_success: { 161 if (CBS_len(&body) > 0xffff) { 162 OPENSSL_PUT_ERROR(SSL, ERR_R_OVERFLOW); 163 return -1; 164 } 165 166 SSL3_RECORD *rr = &ssl->s3->rrec; 167 rr->type = type; 168 rr->length = (uint16_t)CBS_len(&body); 169 rr->data = (uint8_t *)CBS_data(&body); 170 return 1; 171 } 172 173 case ssl_open_record_discard: 174 goto again; 175 176 case ssl_open_record_close_notify: 177 return 0; 178 179 case ssl_open_record_fatal_alert: 180 return -1; 181 182 case ssl_open_record_error: 183 ssl3_send_alert(ssl, SSL3_AL_FATAL, alert); 184 return -1; 185 } 186 187 assert(0); 188 OPENSSL_PUT_ERROR(SSL, ERR_R_INTERNAL_ERROR); 189 return -1; 190 } 191 192 int ssl3_write_app_data(SSL *ssl, int *out_needs_handshake, const uint8_t *buf, 193 int len) { 194 assert(ssl_can_write(ssl)); 195 assert(ssl->s3->aead_write_ctx != NULL); 196 197 *out_needs_handshake = 0; 198 199 unsigned tot, n, nw; 200 201 assert(ssl->s3->wnum <= INT_MAX); 202 tot = ssl->s3->wnum; 203 ssl->s3->wnum = 0; 204 205 /* Ensure that if we end up with a smaller value of data to write out than 206 * the the original len from a write which didn't complete for non-blocking 207 * I/O and also somehow ended up avoiding the check for this in 208 * ssl3_write_pending/SSL_R_BAD_WRITE_RETRY as it must never be possible to 209 * end up with (len-tot) as a large number that will then promptly send 210 * beyond the end of the users buffer ... so we trap and report the error in 211 * a way the user will notice. */ 212 if (len < 0 || (size_t)len < tot) { 213 OPENSSL_PUT_ERROR(SSL, SSL_R_BAD_LENGTH); 214 return -1; 215 } 216 217 const int is_early_data_write = 218 !ssl->server && SSL_in_early_data(ssl) && ssl->s3->hs->can_early_write; 219 220 n = len - tot; 221 for (;;) { 222 /* max contains the maximum number of bytes that we can put into a 223 * record. */ 224 unsigned max = ssl->max_send_fragment; 225 if (is_early_data_write && max > ssl->session->ticket_max_early_data - 226 ssl->s3->hs->early_data_written) { 227 max = ssl->session->ticket_max_early_data - ssl->s3->hs->early_data_written; 228 if (max == 0) { 229 ssl->s3->wnum = tot; 230 ssl->s3->hs->can_early_write = 0; 231 *out_needs_handshake = 1; 232 return -1; 233 } 234 } 235 236 if (n > max) { 237 nw = max; 238 } else { 239 nw = n; 240 } 241 242 int ret = do_ssl3_write(ssl, SSL3_RT_APPLICATION_DATA, &buf[tot], nw); 243 if (ret <= 0) { 244 ssl->s3->wnum = tot; 245 return ret; 246 } 247 248 if (is_early_data_write) { 249 ssl->s3->hs->early_data_written += ret; 250 } 251 252 if (ret == (int)n || (ssl->mode & SSL_MODE_ENABLE_PARTIAL_WRITE)) { 253 return tot + ret; 254 } 255 256 n -= ret; 257 tot += ret; 258 } 259 } 260 261 static int ssl3_write_pending(SSL *ssl, int type, const uint8_t *buf, 262 unsigned int len) { 263 if (ssl->s3->wpend_tot > (int)len || 264 (!(ssl->mode & SSL_MODE_ACCEPT_MOVING_WRITE_BUFFER) && 265 ssl->s3->wpend_buf != buf) || 266 ssl->s3->wpend_type != type) { 267 OPENSSL_PUT_ERROR(SSL, SSL_R_BAD_WRITE_RETRY); 268 return -1; 269 } 270 271 int ret = ssl_write_buffer_flush(ssl); 272 if (ret <= 0) { 273 return ret; 274 } 275 ssl->s3->wpend_pending = 0; 276 return ssl->s3->wpend_ret; 277 } 278 279 /* do_ssl3_write writes an SSL record of the given type. */ 280 static int do_ssl3_write(SSL *ssl, int type, const uint8_t *buf, unsigned len) { 281 /* If there is still data from the previous record, flush it. */ 282 if (ssl->s3->wpend_pending) { 283 return ssl3_write_pending(ssl, type, buf, len); 284 } 285 286 if (len > SSL3_RT_MAX_PLAIN_LENGTH) { 287 OPENSSL_PUT_ERROR(SSL, ERR_R_INTERNAL_ERROR); 288 return -1; 289 } 290 291 if (len == 0) { 292 return 0; 293 } 294 295 size_t flight_len = 0; 296 if (ssl->s3->pending_flight != NULL) { 297 flight_len = 298 ssl->s3->pending_flight->length - ssl->s3->pending_flight_offset; 299 } 300 301 size_t max_out = len + SSL_max_seal_overhead(ssl); 302 if (max_out < len || max_out + flight_len < max_out) { 303 OPENSSL_PUT_ERROR(SSL, ERR_R_OVERFLOW); 304 return -1; 305 } 306 max_out += flight_len; 307 308 uint8_t *out; 309 size_t ciphertext_len; 310 if (!ssl_write_buffer_init(ssl, &out, max_out)) { 311 return -1; 312 } 313 314 /* Add any unflushed handshake data as a prefix. This may be a KeyUpdate 315 * acknowledgment or 0-RTT key change messages. |pending_flight| must be clear 316 * when data is added to |write_buffer| or it will be written in the wrong 317 * order. */ 318 if (ssl->s3->pending_flight != NULL) { 319 OPENSSL_memcpy( 320 out, ssl->s3->pending_flight->data + ssl->s3->pending_flight_offset, 321 flight_len); 322 BUF_MEM_free(ssl->s3->pending_flight); 323 ssl->s3->pending_flight = NULL; 324 ssl->s3->pending_flight_offset = 0; 325 } 326 327 if (!tls_seal_record(ssl, out + flight_len, &ciphertext_len, 328 max_out - flight_len, type, buf, len)) { 329 return -1; 330 } 331 ssl_write_buffer_set_len(ssl, flight_len + ciphertext_len); 332 333 /* Now that we've made progress on the connection, uncork KeyUpdate 334 * acknowledgments. */ 335 ssl->s3->key_update_pending = 0; 336 337 /* memorize arguments so that ssl3_write_pending can detect bad write retries 338 * later */ 339 ssl->s3->wpend_tot = len; 340 ssl->s3->wpend_buf = buf; 341 ssl->s3->wpend_type = type; 342 ssl->s3->wpend_ret = len; 343 ssl->s3->wpend_pending = 1; 344 345 /* we now just need to write the buffer */ 346 return ssl3_write_pending(ssl, type, buf, len); 347 } 348 349 static int consume_record(SSL *ssl, uint8_t *out, int len, int peek) { 350 SSL3_RECORD *rr = &ssl->s3->rrec; 351 352 if (len <= 0) { 353 return len; 354 } 355 356 if (len > (int)rr->length) { 357 len = (int)rr->length; 358 } 359 360 OPENSSL_memcpy(out, rr->data, len); 361 if (!peek) { 362 rr->length -= len; 363 rr->data += len; 364 if (rr->length == 0) { 365 /* The record has been consumed, so we may now clear the buffer. */ 366 ssl_read_buffer_discard(ssl); 367 } 368 } 369 return len; 370 } 371 372 int ssl3_read_app_data(SSL *ssl, int *out_got_handshake, uint8_t *buf, int len, 373 int peek) { 374 assert(ssl_can_read(ssl)); 375 assert(ssl->s3->aead_read_ctx != NULL); 376 *out_got_handshake = 0; 377 378 ssl->method->release_current_message(ssl, 0 /* don't free buffer */); 379 380 SSL3_RECORD *rr = &ssl->s3->rrec; 381 382 for (;;) { 383 /* A previous iteration may have read a partial handshake message. Do not 384 * allow more app data in that case. */ 385 int has_hs_data = ssl->init_buf != NULL && ssl->init_buf->length > 0; 386 387 /* Get new packet if necessary. */ 388 if (rr->length == 0 && !has_hs_data) { 389 int ret = ssl3_get_record(ssl); 390 if (ret <= 0) { 391 return ret; 392 } 393 } 394 395 if (has_hs_data || rr->type == SSL3_RT_HANDSHAKE) { 396 /* If reading 0-RTT data, reject handshake data. 0-RTT data is terminated 397 * by an alert. */ 398 if (SSL_in_init(ssl)) { 399 OPENSSL_PUT_ERROR(SSL, SSL_R_UNEXPECTED_RECORD); 400 ssl3_send_alert(ssl, SSL3_AL_FATAL, SSL_AD_UNEXPECTED_MESSAGE); 401 return -1; 402 } 403 404 /* Post-handshake data prior to TLS 1.3 is always renegotiation, which we 405 * never accept as a server. Otherwise |ssl3_get_message| will send 406 * |SSL_R_EXCESSIVE_MESSAGE_SIZE|. */ 407 if (ssl->server && ssl3_protocol_version(ssl) < TLS1_3_VERSION) { 408 ssl3_send_alert(ssl, SSL3_AL_FATAL, SSL_AD_NO_RENEGOTIATION); 409 OPENSSL_PUT_ERROR(SSL, SSL_R_NO_RENEGOTIATION); 410 return -1; 411 } 412 413 /* Parse post-handshake handshake messages. */ 414 int ret = ssl3_get_message(ssl); 415 if (ret <= 0) { 416 return ret; 417 } 418 *out_got_handshake = 1; 419 return -1; 420 } 421 422 const int is_early_data_read = ssl->server && 423 ssl->s3->hs != NULL && 424 ssl->s3->hs->can_early_read && 425 ssl3_protocol_version(ssl) >= TLS1_3_VERSION; 426 427 /* Handle the end_of_early_data alert. */ 428 if (rr->type == SSL3_RT_ALERT && 429 rr->length == 2 && 430 rr->data[0] == SSL3_AL_WARNING && 431 rr->data[1] == TLS1_AD_END_OF_EARLY_DATA && 432 is_early_data_read) { 433 /* Consume the record. */ 434 rr->length = 0; 435 ssl_read_buffer_discard(ssl); 436 /* Stop accepting early data. */ 437 ssl->s3->hs->can_early_read = 0; 438 *out_got_handshake = 1; 439 return -1; 440 } 441 442 if (rr->type != SSL3_RT_APPLICATION_DATA) { 443 OPENSSL_PUT_ERROR(SSL, SSL_R_UNEXPECTED_RECORD); 444 ssl3_send_alert(ssl, SSL3_AL_FATAL, SSL_AD_UNEXPECTED_MESSAGE); 445 return -1; 446 } 447 448 if (is_early_data_read) { 449 if (rr->length > kMaxEarlyDataAccepted - ssl->s3->hs->early_data_read) { 450 OPENSSL_PUT_ERROR(SSL, SSL_R_TOO_MUCH_READ_EARLY_DATA); 451 ssl3_send_alert(ssl, SSL3_AL_FATAL, SSL3_AD_UNEXPECTED_MESSAGE); 452 return -1; 453 } 454 455 ssl->s3->hs->early_data_read += rr->length; 456 } 457 458 if (rr->length != 0) { 459 return consume_record(ssl, buf, len, peek); 460 } 461 462 /* Discard empty records and loop again. */ 463 } 464 } 465 466 int ssl3_read_change_cipher_spec(SSL *ssl) { 467 SSL3_RECORD *rr = &ssl->s3->rrec; 468 469 if (rr->length == 0) { 470 int ret = ssl3_get_record(ssl); 471 if (ret <= 0) { 472 return ret; 473 } 474 } 475 476 if (rr->type != SSL3_RT_CHANGE_CIPHER_SPEC) { 477 ssl3_send_alert(ssl, SSL3_AL_FATAL, SSL_AD_UNEXPECTED_MESSAGE); 478 OPENSSL_PUT_ERROR(SSL, SSL_R_UNEXPECTED_RECORD); 479 return -1; 480 } 481 482 if (rr->length != 1 || rr->data[0] != SSL3_MT_CCS) { 483 OPENSSL_PUT_ERROR(SSL, SSL_R_BAD_CHANGE_CIPHER_SPEC); 484 ssl3_send_alert(ssl, SSL3_AL_FATAL, SSL_AD_ILLEGAL_PARAMETER); 485 return -1; 486 } 487 488 ssl_do_msg_callback(ssl, 0 /* read */, SSL3_RT_CHANGE_CIPHER_SPEC, rr->data, 489 rr->length); 490 491 rr->length = 0; 492 ssl_read_buffer_discard(ssl); 493 return 1; 494 } 495 496 void ssl3_read_close_notify(SSL *ssl) { 497 /* Read records until an error or close_notify. */ 498 while (ssl3_get_record(ssl) > 0) { 499 ; 500 } 501 } 502 503 int ssl3_read_handshake_bytes(SSL *ssl, uint8_t *buf, int len) { 504 SSL3_RECORD *rr = &ssl->s3->rrec; 505 506 for (;;) { 507 /* Get new packet if necessary. */ 508 if (rr->length == 0) { 509 int ret = ssl3_get_record(ssl); 510 if (ret <= 0) { 511 return ret; 512 } 513 } 514 515 /* WatchGuard's TLS 1.3 interference bug is very distinctive: they drop the 516 * ServerHello and send the remaining encrypted application data records 517 * as-is. This manifests as an application data record when we expect 518 * handshake. Report a dedicated error code for this case. */ 519 if (!ssl->server && rr->type == SSL3_RT_APPLICATION_DATA && 520 ssl->s3->aead_read_ctx == NULL) { 521 OPENSSL_PUT_ERROR(SSL, SSL_R_APPLICATION_DATA_INSTEAD_OF_HANDSHAKE); 522 ssl3_send_alert(ssl, SSL3_AL_FATAL, SSL_AD_UNEXPECTED_MESSAGE); 523 return -1; 524 } 525 526 /* Accept server_plaintext_handshake records when the content type TLS 1.3 527 * variant is enabled. */ 528 if (rr->type != SSL3_RT_HANDSHAKE && 529 !(!ssl->server && 530 ssl->tls13_variant == tls13_record_type_experiment && 531 ssl->s3->aead_read_ctx == NULL && 532 rr->type == SSL3_RT_PLAINTEXT_HANDSHAKE)) { 533 OPENSSL_PUT_ERROR(SSL, SSL_R_UNEXPECTED_RECORD); 534 ssl3_send_alert(ssl, SSL3_AL_FATAL, SSL_AD_UNEXPECTED_MESSAGE); 535 return -1; 536 } 537 538 if (rr->length != 0) { 539 return consume_record(ssl, buf, len, 0 /* consume data */); 540 } 541 542 /* Discard empty records and loop again. */ 543 } 544 } 545 546 int ssl3_send_alert(SSL *ssl, int level, int desc) { 547 /* It is illegal to send an alert when we've already sent a closing one. */ 548 if (ssl->s3->send_shutdown != ssl_shutdown_none) { 549 OPENSSL_PUT_ERROR(SSL, SSL_R_PROTOCOL_IS_SHUTDOWN); 550 return -1; 551 } 552 553 if (level == SSL3_AL_WARNING && desc == SSL_AD_CLOSE_NOTIFY) { 554 ssl->s3->send_shutdown = ssl_shutdown_close_notify; 555 } else { 556 assert(level == SSL3_AL_FATAL); 557 ssl->s3->send_shutdown = ssl_shutdown_fatal_alert; 558 } 559 560 ssl->s3->alert_dispatch = 1; 561 ssl->s3->send_alert[0] = level; 562 ssl->s3->send_alert[1] = desc; 563 if (!ssl_write_buffer_is_pending(ssl)) { 564 /* Nothing is being written out, so the alert may be dispatched 565 * immediately. */ 566 return ssl->method->dispatch_alert(ssl); 567 } 568 569 /* The alert will be dispatched later. */ 570 return -1; 571 } 572 573 int ssl3_dispatch_alert(SSL *ssl) { 574 int ret = do_ssl3_write(ssl, SSL3_RT_ALERT, &ssl->s3->send_alert[0], 2); 575 if (ret <= 0) { 576 return ret; 577 } 578 ssl->s3->alert_dispatch = 0; 579 580 /* If the alert is fatal, flush the BIO now. */ 581 if (ssl->s3->send_alert[0] == SSL3_AL_FATAL) { 582 BIO_flush(ssl->wbio); 583 } 584 585 ssl_do_msg_callback(ssl, 1 /* write */, SSL3_RT_ALERT, ssl->s3->send_alert, 586 2); 587 588 int alert = (ssl->s3->send_alert[0] << 8) | ssl->s3->send_alert[1]; 589 ssl_do_info_callback(ssl, SSL_CB_WRITE_ALERT, alert); 590 591 return 1; 592 } 593
