s_client.c revision 1.52
1/* $OpenBSD: s_client.c,v 1.52 2020/10/14 05:36:18 tb Exp $ */ 2/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com) 3 * All rights reserved. 4 * 5 * This package is an SSL implementation written 6 * by Eric Young (eay@cryptsoft.com). 7 * The implementation was written so as to conform with Netscapes SSL. 8 * 9 * This library is free for commercial and non-commercial use as long as 10 * the following conditions are aheared to. The following conditions 11 * apply to all code found in this distribution, be it the RC4, RSA, 12 * lhash, DES, etc., code; not just the SSL code. The SSL documentation 13 * included with this distribution is covered by the same copyright terms 14 * except that the holder is Tim Hudson (tjh@cryptsoft.com). 15 * 16 * Copyright remains Eric Young's, and as such any Copyright notices in 17 * the code are not to be removed. 18 * If this package is used in a product, Eric Young should be given attribution 19 * as the author of the parts of the library used. 20 * This can be in the form of a textual message at program startup or 21 * in documentation (online or textual) provided with the package. 22 * 23 * Redistribution and use in source and binary forms, with or without 24 * modification, are permitted provided that the following conditions 25 * are met: 26 * 1. Redistributions of source code must retain the copyright 27 * notice, this list of conditions and the following disclaimer. 28 * 2. Redistributions in binary form must reproduce the above copyright 29 * notice, this list of conditions and the following disclaimer in the 30 * documentation and/or other materials provided with the distribution. 31 * 3. All advertising materials mentioning features or use of this software 32 * must display the following acknowledgement: 33 * "This product includes cryptographic software written by 34 * Eric Young (eay@cryptsoft.com)" 35 * The word 'cryptographic' can be left out if the rouines from the library 36 * being used are not cryptographic related :-). 37 * 4. If you include any Windows specific code (or a derivative thereof) from 38 * the apps directory (application code) you must include an acknowledgement: 39 * "This product includes software written by Tim Hudson (tjh@cryptsoft.com)" 40 * 41 * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND 42 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 43 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 44 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 45 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 46 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 47 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 48 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 49 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 50 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 51 * SUCH DAMAGE. 52 * 53 * The licence and distribution terms for any publically available version or 54 * derivative of this code cannot be changed. i.e. this code cannot simply be 55 * copied and put under another distribution licence 56 * [including the GNU Public Licence.] 57 */ 58/* ==================================================================== 59 * Copyright (c) 1998-2006 The OpenSSL Project. All rights reserved. 60 * 61 * Redistribution and use in source and binary forms, with or without 62 * modification, are permitted provided that the following conditions 63 * are met: 64 * 65 * 1. Redistributions of source code must retain the above copyright 66 * notice, this list of conditions and the following disclaimer. 67 * 68 * 2. Redistributions in binary form must reproduce the above copyright 69 * notice, this list of conditions and the following disclaimer in 70 * the documentation and/or other materials provided with the 71 * distribution. 72 * 73 * 3. All advertising materials mentioning features or use of this 74 * software must display the following acknowledgment: 75 * "This product includes software developed by the OpenSSL Project 76 * for use in the OpenSSL Toolkit. (http://www.openssl.org/)" 77 * 78 * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to 79 * endorse or promote products derived from this software without 80 * prior written permission. For written permission, please contact 81 * openssl-core@openssl.org. 82 * 83 * 5. Products derived from this software may not be called "OpenSSL" 84 * nor may "OpenSSL" appear in their names without prior written 85 * permission of the OpenSSL Project. 86 * 87 * 6. Redistributions of any form whatsoever must retain the following 88 * acknowledgment: 89 * "This product includes software developed by the OpenSSL Project 90 * for use in the OpenSSL Toolkit (http://www.openssl.org/)" 91 * 92 * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY 93 * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 94 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 95 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OpenSSL PROJECT OR 96 * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 97 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 98 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; 99 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 100 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, 101 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 102 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED 103 * OF THE POSSIBILITY OF SUCH DAMAGE. 104 * ==================================================================== 105 * 106 * This product includes cryptographic software written by Eric Young 107 * (eay@cryptsoft.com). This product includes software written by Tim 108 * Hudson (tjh@cryptsoft.com). 109 * 110 */ 111/* ==================================================================== 112 * Copyright 2005 Nokia. All rights reserved. 113 * 114 * The portions of the attached software ("Contribution") is developed by 115 * Nokia Corporation and is licensed pursuant to the OpenSSL open source 116 * license. 117 * 118 * The Contribution, originally written by Mika Kousa and Pasi Eronen of 119 * Nokia Corporation, consists of the "PSK" (Pre-Shared Key) ciphersuites 120 * support (see RFC 4279) to OpenSSL. 121 * 122 * No patent licenses or other rights except those expressly stated in 123 * the OpenSSL open source license shall be deemed granted or received 124 * expressly, by implication, estoppel, or otherwise. 125 * 126 * No assurances are provided by Nokia that the Contribution does not 127 * infringe the patent or other intellectual property rights of any third 128 * party or that the license provides you with all the necessary rights 129 * to make use of the Contribution. 130 * 131 * THE SOFTWARE IS PROVIDED "AS IS" WITHOUT WARRANTY OF ANY KIND. IN 132 * ADDITION TO THE DISCLAIMERS INCLUDED IN THE LICENSE, NOKIA 133 * SPECIFICALLY DISCLAIMS ANY LIABILITY FOR CLAIMS BROUGHT BY YOU OR ANY 134 * OTHER ENTITY BASED ON INFRINGEMENT OF INTELLECTUAL PROPERTY RIGHTS OR 135 * OTHERWISE. 136 */ 137 138#include <sys/types.h> 139#include <sys/socket.h> 140 141#include <netinet/in.h> 142 143#include <assert.h> 144#include <ctype.h> 145#include <limits.h> 146#include <netdb.h> 147#include <stdio.h> 148#include <stdlib.h> 149#include <string.h> 150#include <unistd.h> 151#include <poll.h> 152 153#include "apps.h" 154 155#include <openssl/bn.h> 156#include <openssl/err.h> 157#include <openssl/ocsp.h> 158#include <openssl/pem.h> 159#include <openssl/ssl.h> 160#include <openssl/x509.h> 161 162#include "s_apps.h" 163#include "timeouts.h" 164 165/*#define SSL_HOST_NAME "www.netscape.com" */ 166/*#define SSL_HOST_NAME "193.118.187.102" */ 167#define SSL_HOST_NAME "localhost" 168 169 /*#define TEST_CERT "client.pem" *//* no default cert. */ 170 171#define BUFSIZZ 1024*8 172 173static void sc_usage(void); 174static void print_stuff(BIO *berr, SSL *con, int full); 175static int ocsp_resp_cb(SSL *s, void *arg); 176static int ssl_servername_cb(SSL *s, int *ad, void *arg); 177 178enum { 179 PROTO_OFF = 0, 180 PROTO_SMTP, 181 PROTO_LMTP, 182 PROTO_POP3, 183 PROTO_IMAP, 184 PROTO_FTP, 185 PROTO_XMPP, 186}; 187 188/* This is a context that we pass to callbacks */ 189typedef struct tlsextctx_st { 190 BIO *biodebug; 191 int ack; 192} tlsextctx; 193 194static struct { 195 int af; 196 char *alpn_in; 197 int bugs; 198 char *CAfile; 199 char *CApath; 200 char *cert_file; 201 int cert_format; 202 char *cipher; 203 unsigned int clr; 204 char *connect; 205 int crlf; 206 int debug; 207 int enable_timeouts; 208 const char *errstr; 209 char *groups_in; 210 char *host; 211 int ign_eof; 212 char *key_file; 213 int key_format; 214 char *keymatexportlabel; 215 int keymatexportlen; 216 uint16_t max_version; 217 uint16_t min_version; 218 const SSL_METHOD *meth; 219 int msg; 220 int nbio; 221 int nbio_test; 222 char *npn_in; 223 unsigned int off; 224 char *passarg; 225 int pause; 226 int peekaboo; 227 char *port; 228 int prexit; 229 char *proxy; 230 int quiet; 231 int reconnect; 232 char *servername; 233 char *sess_in; 234 char *sess_out; 235 int showcerts; 236 int socket_type; 237 long socket_mtu; 238#ifndef OPENSSL_NO_SRTP 239 char *srtp_profiles; 240#endif 241 int starttls_proto; 242 int state; 243 int status_req; 244 int tlsextdebug; 245 int verify; 246 X509_VERIFY_PARAM *vpm; 247 char *xmpphost; 248} s_client_config; 249 250static int 251s_client_opt_keymatexportlen(char *arg) 252{ 253 s_client_config.keymatexportlen = strtonum(arg, 1, INT_MAX, 254 &s_client_config.errstr); 255 if (s_client_config.errstr != NULL) { 256 BIO_printf(bio_err, "invalid argument %s: %s\n", 257 arg, s_client_config.errstr); 258 return (1); 259 } 260 return (0); 261} 262 263#ifndef OPENSSL_NO_DTLS1 264static int 265s_client_opt_mtu(char *arg) 266{ 267 s_client_config.socket_mtu = strtonum(arg, 0, LONG_MAX, 268 &s_client_config.errstr); 269 if (s_client_config.errstr != NULL) { 270 BIO_printf(bio_err, "invalid argument %s: %s\n", 271 arg, s_client_config.errstr); 272 return (1); 273 } 274 return (0); 275} 276#endif 277 278static int 279s_client_opt_port(char *arg) 280{ 281 if (*arg == '\0') 282 return (1); 283 284 s_client_config.port = arg; 285 return (0); 286} 287 288#ifndef OPENSSL_NO_DTLS1 289static int 290s_client_opt_protocol_version_dtls1(void) 291{ 292 s_client_config.meth = DTLS_client_method(); 293 s_client_config.socket_type = SOCK_DGRAM; 294 return (0); 295} 296#endif 297 298static int 299s_client_opt_protocol_version_tls1(void) 300{ 301 s_client_config.min_version = TLS1_VERSION; 302 s_client_config.max_version = TLS1_VERSION; 303 return (0); 304} 305 306static int 307s_client_opt_protocol_version_tls1_1(void) 308{ 309 s_client_config.min_version = TLS1_1_VERSION; 310 s_client_config.max_version = TLS1_1_VERSION; 311 return (0); 312} 313 314static int 315s_client_opt_protocol_version_tls1_2(void) 316{ 317 s_client_config.min_version = TLS1_2_VERSION; 318 s_client_config.max_version = TLS1_2_VERSION; 319 return (0); 320} 321 322static int 323s_client_opt_protocol_version_tls1_3(void) 324{ 325 s_client_config.min_version = TLS1_3_VERSION; 326 s_client_config.max_version = TLS1_3_VERSION; 327 return (0); 328} 329 330static int 331s_client_opt_quiet(void) 332{ 333 s_client_config.quiet = 1; 334 s_client_config.ign_eof = 1; 335 return (0); 336} 337 338static int 339s_client_opt_starttls(char *arg) 340{ 341 if (strcmp(arg, "smtp") == 0) 342 s_client_config.starttls_proto = PROTO_SMTP; 343 else if (strcmp(arg, "lmtp") == 0) 344 s_client_config.starttls_proto = PROTO_LMTP; 345 else if (strcmp(arg, "pop3") == 0) 346 s_client_config.starttls_proto = PROTO_POP3; 347 else if (strcmp(arg, "imap") == 0) 348 s_client_config.starttls_proto = PROTO_IMAP; 349 else if (strcmp(arg, "ftp") == 0) 350 s_client_config.starttls_proto = PROTO_FTP; 351 else if (strcmp(arg, "xmpp") == 0) 352 s_client_config.starttls_proto = PROTO_XMPP; 353 else 354 return (1); 355 return (0); 356} 357 358static int 359s_client_opt_verify(char *arg) 360{ 361 s_client_config.verify = SSL_VERIFY_PEER; 362 363 verify_depth = strtonum(arg, 0, INT_MAX, &s_client_config.errstr); 364 if (s_client_config.errstr != NULL) { 365 BIO_printf(bio_err, "invalid argument %s: %s\n", 366 arg, s_client_config.errstr); 367 return (1); 368 } 369 BIO_printf(bio_err, "verify depth is %d\n", verify_depth); 370 return (0); 371} 372 373static int 374s_client_opt_verify_param(int argc, char **argv, int *argsused) 375{ 376 char **pargs = argv; 377 int pargc = argc; 378 int badarg = 0; 379 380 if (!args_verify(&pargs, &pargc, &badarg, bio_err, 381 &s_client_config.vpm)) { 382 BIO_printf(bio_err, "unknown option %s\n", *argv); 383 return (1); 384 } 385 if (badarg) 386 return (1); 387 388 *argsused = argc - pargc; 389 return (0); 390} 391 392static const struct option s_client_options[] = { 393 { 394 .name = "4", 395 .desc = "Use IPv4 only", 396 .type = OPTION_VALUE, 397 .opt.value = &s_client_config.af, 398 .value = AF_INET, 399 }, 400 { 401 .name = "6", 402 .desc = "Use IPv6 only", 403 .type = OPTION_VALUE, 404 .opt.value = &s_client_config.af, 405 .value = AF_INET6, 406 }, 407 { 408 .name = "alpn", 409 .argname = "protocols", 410 .desc = "Set the advertised protocols for ALPN" 411 " (comma-separated list)", 412 .type = OPTION_ARG, 413 .opt.arg = &s_client_config.alpn_in, 414 }, 415 { 416 .name = "bugs", 417 .desc = "Enable various workarounds for buggy implementations", 418 .type = OPTION_FLAG, 419 .opt.flag = &s_client_config.bugs, 420 }, 421 { 422 .name = "CAfile", 423 .argname = "file", 424 .desc = "PEM format file of CA certificates", 425 .type = OPTION_ARG, 426 .opt.arg = &s_client_config.CAfile, 427 }, 428 { 429 .name = "CApath", 430 .argname = "directory", 431 .desc = "PEM format directory of CA certificates", 432 .type = OPTION_ARG, 433 .opt.arg = &s_client_config.CApath, 434 }, 435 { 436 .name = "cert", 437 .argname = "file", 438 .desc = "Certificate file to use, PEM format assumed", 439 .type = OPTION_ARG, 440 .opt.arg = &s_client_config.cert_file, 441 }, 442 { 443 .name = "certform", 444 .argname = "fmt", 445 .desc = "Certificate format (PEM or DER) PEM default", 446 .type = OPTION_ARG_FORMAT, 447 .opt.value = &s_client_config.cert_format, 448 }, 449 { 450 .name = "cipher", 451 .argname = "cipherlist", 452 .desc = "Preferred cipher to use (see 'openssl ciphers')", 453 .type = OPTION_ARG, 454 .opt.arg = &s_client_config.cipher, 455 }, 456 { 457 .name = "connect", 458 .argname = "host:port", 459 .desc = "Who to connect to (default is localhost:4433)", 460 .type = OPTION_ARG, 461 .opt.arg = &s_client_config.connect, 462 }, 463 { 464 .name = "crlf", 465 .desc = "Convert LF from terminal into CRLF", 466 .type = OPTION_FLAG, 467 .opt.flag = &s_client_config.crlf, 468 }, 469 { 470 .name = "debug", 471 .desc = "Print extensive debugging information", 472 .type = OPTION_FLAG, 473 .opt.flag = &s_client_config.debug, 474 }, 475#ifndef OPENSSL_NO_DTLS1 476 { 477 .name = "dtls1", 478 .desc = "Just use DTLSv1", 479 .type = OPTION_FUNC, 480 .opt.func = s_client_opt_protocol_version_dtls1, 481 }, 482#endif 483 { 484 .name = "groups", 485 .argname = "list", 486 .desc = "Specify EC groups (colon-separated list)", 487 .type = OPTION_ARG, 488 .opt.arg = &s_client_config.groups_in, 489 }, 490 { 491 .name = "host", 492 .argname = "host", 493 .desc = "Use -connect instead", 494 .type = OPTION_ARG, 495 .opt.arg = &s_client_config.host, 496 }, 497 { 498 .name = "ign_eof", 499 .desc = "Ignore input EOF (default when -quiet)", 500 .type = OPTION_VALUE, 501 .opt.value = &s_client_config.ign_eof, 502 .value = 1, 503 }, 504 { 505 .name = "key", 506 .argname = "file", 507 .desc = "Private key file to use, if not, -cert file is used", 508 .type = OPTION_ARG, 509 .opt.arg = &s_client_config.key_file, 510 }, 511 { 512 .name = "keyform", 513 .argname = "fmt", 514 .desc = "Key format (PEM or DER) PEM default", 515 .type = OPTION_ARG_FORMAT, 516 .opt.value = &s_client_config.key_format, 517 }, 518 { 519 .name = "keymatexport", 520 .argname = "label", 521 .desc = "Export keying material using label", 522 .type = OPTION_ARG, 523 .opt.arg = &s_client_config.keymatexportlabel, 524 }, 525 { 526 .name = "keymatexportlen", 527 .argname = "len", 528 .desc = "Export len bytes of keying material (default 20)", 529 .type = OPTION_ARG_FUNC, 530 .opt.argfunc = s_client_opt_keymatexportlen, 531 }, 532 { 533 .name = "legacy_renegotiation", 534 .type = OPTION_DISCARD, 535 }, 536 { 537 .name = "legacy_server_connect", 538 .desc = "Allow initial connection to servers that don't support RI", 539 .type = OPTION_VALUE_OR, 540 .opt.value = &s_client_config.off, 541 .value = SSL_OP_LEGACY_SERVER_CONNECT, 542 }, 543 { 544 .name = "msg", 545 .desc = "Show all protocol messages with hex dump", 546 .type = OPTION_FLAG, 547 .opt.flag = &s_client_config.msg, 548 }, 549#ifndef OPENSSL_NO_DTLS1 550 { 551 .name = "mtu", 552 .argname = "mtu", 553 .desc = "Set the link layer MTU on DTLS connections", 554 .type = OPTION_ARG_FUNC, 555 .opt.argfunc = s_client_opt_mtu, 556 }, 557#endif 558 { 559 .name = "nbio", 560 .desc = "Turn on non-blocking I/O", 561 .type = OPTION_FLAG, 562 .opt.flag = &s_client_config.nbio, 563 }, 564 { 565 .name = "nbio_test", 566 .desc = "Test non-blocking I/O", 567 .type = OPTION_FLAG, 568 .opt.flag = &s_client_config.nbio_test, 569 }, 570 { 571 .name = "nextprotoneg", 572 .argname = "protocols", 573 .type = OPTION_ARG, 574 .opt.arg = &s_client_config.npn_in, /* Ignored. */ 575 }, 576 { 577 .name = "no_comp", 578 .type = OPTION_VALUE_OR, 579 .opt.value = &s_client_config.off, 580 .value = SSL_OP_NO_COMPRESSION, 581 }, 582 { 583 .name = "no_ign_eof", 584 .desc = "Don't ignore input EOF", 585 .type = OPTION_VALUE, 586 .opt.value = &s_client_config.ign_eof, 587 .value = 0, 588 }, 589 { 590 .name = "no_legacy_server_connect", 591 .desc = "Disallow initial connection to servers that don't support RI", 592 .type = OPTION_VALUE_OR, 593 .opt.value = &s_client_config.clr, 594 .value = SSL_OP_LEGACY_SERVER_CONNECT, 595 }, 596 { 597 .name = "no_ssl2", 598 .type = OPTION_VALUE_OR, 599 .opt.value = &s_client_config.off, 600 .value = SSL_OP_NO_SSLv2, 601 }, 602 { 603 .name = "no_ssl3", 604 .type = OPTION_VALUE_OR, 605 .opt.value = &s_client_config.off, 606 .value = SSL_OP_NO_SSLv3, 607 }, 608 { 609 .name = "no_ticket", 610 .desc = "Disable use of RFC4507 session ticket support", 611 .type = OPTION_VALUE_OR, 612 .opt.value = &s_client_config.off, 613 .value = SSL_OP_NO_TICKET, 614 }, 615 { 616 .name = "no_tls1", 617 .desc = "Disable the use of TLSv1", 618 .type = OPTION_VALUE_OR, 619 .opt.value = &s_client_config.off, 620 .value = SSL_OP_NO_TLSv1, 621 }, 622 { 623 .name = "no_tls1_1", 624 .desc = "Disable the use of TLSv1.1", 625 .type = OPTION_VALUE_OR, 626 .opt.value = &s_client_config.off, 627 .value = SSL_OP_NO_TLSv1_1, 628 }, 629 { 630 .name = "no_tls1_2", 631 .desc = "Disable the use of TLSv1.2", 632 .type = OPTION_VALUE_OR, 633 .opt.value = &s_client_config.off, 634 .value = SSL_OP_NO_TLSv1_2, 635 }, 636 { 637 .name = "no_tls1_3", 638 .desc = "Disable the use of TLSv1.3", 639 .type = OPTION_VALUE_OR, 640 .opt.value = &s_client_config.off, 641 .value = SSL_OP_NO_TLSv1_3, 642 }, 643 { 644 .name = "pass", 645 .argname = "arg", 646 .desc = "Private key file pass phrase source", 647 .type = OPTION_ARG, 648 .opt.arg = &s_client_config.passarg, 649 }, 650 { 651 .name = "pause", 652 .desc = "Pause 1 second between each read and write call", 653 .type = OPTION_FLAG, 654 .opt.flag = &s_client_config.pause, 655 }, 656 { 657 .name = "peekaboo", 658 .type = OPTION_FLAG, 659 .opt.flag = &s_client_config.peekaboo, 660 }, 661 { 662 .name = "port", 663 .argname = "port", 664 .desc = "Use -connect instead", 665 .type = OPTION_ARG_FUNC, 666 .opt.argfunc = s_client_opt_port, 667 }, 668 { 669 .name = "prexit", 670 .desc = "Print session information when the program exits", 671 .type = OPTION_FLAG, 672 .opt.flag = &s_client_config.prexit, 673 }, 674 { 675 .name = "proxy", 676 .argname = "host:port", 677 .desc = "Connect to http proxy", 678 .type = OPTION_ARG, 679 .opt.arg = &s_client_config.proxy, 680 }, 681 { 682 .name = "quiet", 683 .desc = "Inhibit printing of session and certificate info", 684 .type = OPTION_FUNC, 685 .opt.func = s_client_opt_quiet, 686 }, 687 { 688 .name = "reconnect", 689 .desc = "Drop and re-make the connection with the same Session-ID", 690 .type = OPTION_VALUE, 691 .opt.value = &s_client_config.reconnect, 692 .value = 5, 693 }, 694 { 695 .name = "servername", 696 .argname = "name", 697 .desc = "Set TLS extension servername in ClientHello (SNI)", 698 .type = OPTION_ARG, 699 .opt.arg = &s_client_config.servername, 700 }, 701 { 702 .name = "serverpref", 703 .desc = "Use server's cipher preferences", 704 .type = OPTION_VALUE_OR, 705 .opt.value = &s_client_config.off, 706 .value = SSL_OP_CIPHER_SERVER_PREFERENCE, 707 }, 708 { 709 .name = "sess_in", 710 .argname = "file", 711 .desc = "File to read TLS session from", 712 .type = OPTION_ARG, 713 .opt.arg = &s_client_config.sess_in, 714 }, 715 { 716 .name = "sess_out", 717 .argname = "file", 718 .desc = "File to write TLS session to", 719 .type = OPTION_ARG, 720 .opt.arg = &s_client_config.sess_out, 721 }, 722 { 723 .name = "showcerts", 724 .desc = "Show all server certificates in the chain", 725 .type = OPTION_FLAG, 726 .opt.flag = &s_client_config.showcerts, 727 }, 728 { 729 .name = "starttls", 730 .argname = "protocol", 731 .desc = "Use the STARTTLS command before starting TLS,\n" 732 "smtp, lmtp, pop3, imap, ftp and xmpp are supported.", 733 .type = OPTION_ARG_FUNC, 734 .opt.argfunc = s_client_opt_starttls, 735 }, 736 { 737 .name = "state", 738 .desc = "Print the TLS session states", 739 .type = OPTION_FLAG, 740 .opt.flag = &s_client_config.state, 741 }, 742 { 743 .name = "status", 744 .desc = "Send a certificate status request to the server (OCSP)", 745 .type = OPTION_FLAG, 746 .opt.flag = &s_client_config.status_req, 747 }, 748#ifndef OPENSSL_NO_DTLS1 749 { 750 .name = "timeout", 751 .desc = "Enable send/receive timeout on DTLS connections", 752 .type = OPTION_FLAG, 753 .opt.flag = &s_client_config.enable_timeouts, 754 }, 755#endif 756 { 757 .name = "tls1", 758 .desc = "Just use TLSv1", 759 .type = OPTION_FUNC, 760 .opt.func = s_client_opt_protocol_version_tls1, 761 }, 762 { 763 .name = "tls1_1", 764 .desc = "Just use TLSv1.1", 765 .type = OPTION_FUNC, 766 .opt.func = s_client_opt_protocol_version_tls1_1, 767 }, 768 { 769 .name = "tls1_2", 770 .desc = "Just use TLSv1.2", 771 .type = OPTION_FUNC, 772 .opt.func = s_client_opt_protocol_version_tls1_2, 773 }, 774 { 775 .name = "tls1_3", 776 .desc = "Just use TLSv1.3", 777 .type = OPTION_FUNC, 778 .opt.func = s_client_opt_protocol_version_tls1_3, 779 }, 780 { 781 .name = "tlsextdebug", 782 .desc = "Hex dump of all TLS extensions received", 783 .type = OPTION_FLAG, 784 .opt.flag = &s_client_config.tlsextdebug, 785 }, 786#ifndef OPENSSL_NO_SRTP 787 { 788 .name = "use_srtp", 789 .argname = "profiles", 790 .desc = "Offer SRTP key management with a colon-separated profiles", 791 .type = OPTION_ARG, 792 .opt.arg = &s_client_config.srtp_profiles, 793 }, 794#endif 795 { 796 .name = "verify", 797 .argname = "depth", 798 .desc = "Turn on peer certificate verification, with a max of depth", 799 .type = OPTION_ARG_FUNC, 800 .opt.argfunc = s_client_opt_verify, 801 }, 802 { 803 .name = "verify_return_error", 804 .desc = "Return verification error", 805 .type = OPTION_FLAG, 806 .opt.flag = &verify_return_error, 807 }, 808 { 809 .name = "xmpphost", 810 .argname = "host", 811 .desc = "Connect to this virtual host on the xmpp server", 812 .type = OPTION_ARG, 813 .opt.arg = &s_client_config.xmpphost, 814 }, 815 { 816 .name = NULL, 817 .desc = "", 818 .type = OPTION_ARGV_FUNC, 819 .opt.argvfunc = s_client_opt_verify_param, 820 }, 821 { NULL }, 822}; 823 824static void 825sc_usage(void) 826{ 827 fprintf(stderr, "usage: s_client " 828 "[-4 | -6] [-alpn protocols] [-bugs] [-CAfile file]\n" 829 " [-CApath directory] [-cert file] [-certform der | pem] [-check_ss_sig]\n" 830 " [-cipher cipherlist] [-connect host[:port]] [-crl_check]\n" 831 " [-crl_check_all] [-crlf] [-debug] [-dtls1] [-extended_crl]\n" 832 " [-groups list] [-host host] [-ign_eof] [-ignore_critical]\n" 833 " [-issuer_checks] [-key keyfile] [-keyform der | pem]\n" 834 " [-keymatexport label] [-keymatexportlen len] [-legacy_server_connect]\n" 835 " [-msg] [-mtu mtu] [-nbio] [-nbio_test] [-no_comp] [-no_ign_eof]\n" 836 " [-no_legacy_server_connect] [-no_ticket] [-no_tls1] [-no_tls1_1]\n" 837 " [-no_tls1_2] [-no_tls1_3] [-pass arg] [-pause] [-policy_check]\n" 838 " [-port port] [-prexit] [-proxy host:port] [-quiet] [-reconnect]\n" 839 " [-servername name] [-serverpref] [-sess_in file] [-sess_out file]\n" 840 " [-showcerts] [-starttls protocol] [-state] [-status] [-timeout]\n" 841 " [-tls1] [-tls1_1] [-tls1_2] [-tls1_3] [-tlsextdebug]\n" 842 " [-use_srtp profiles] [-verify depth] [-verify_return_error]\n" 843 " [-x509_strict] [-xmpphost host]\n"); 844 fprintf(stderr, "\n"); 845 options_usage(s_client_options); 846 fprintf(stderr, "\n"); 847} 848 849int 850s_client_main(int argc, char **argv) 851{ 852 SSL *con = NULL; 853 int s, k, p = 0, pending = 0; 854 char *cbuf = NULL, *sbuf = NULL, *mbuf = NULL, *pbuf = NULL; 855 int cbuf_len, cbuf_off; 856 int sbuf_len, sbuf_off; 857 int pbuf_len, pbuf_off; 858 int full_log = 1; 859 char *pass = NULL; 860 X509 *cert = NULL; 861 EVP_PKEY *key = NULL; 862 int badop = 0; 863 int write_tty, read_tty, write_ssl, read_ssl, tty_on, ssl_pending; 864 SSL_CTX *ctx = NULL; 865 int ret = 1, in_init = 1, i; 866 BIO *bio_c_out = NULL; 867 BIO *sbio; 868 int mbuf_len = 0; 869 struct timeval timeout; 870 tlsextctx tlsextcbp = {NULL, 0}; 871 struct sockaddr_storage peer; 872 int peerlen = sizeof(peer); 873 874 if (single_execution) { 875 if (pledge("stdio cpath wpath rpath inet dns tty", NULL) == -1) { 876 perror("pledge"); 877 exit(1); 878 } 879 } 880 881 memset(&s_client_config, 0, sizeof(s_client_config)); 882 s_client_config.af = AF_UNSPEC; 883 s_client_config.cert_format = FORMAT_PEM; 884 s_client_config.host = SSL_HOST_NAME; 885 s_client_config.key_format = FORMAT_PEM; 886 s_client_config.keymatexportlen = 20; 887 s_client_config.meth = TLS_client_method(); 888 s_client_config.port = PORT_STR; 889 s_client_config.socket_type = SOCK_STREAM; 890 s_client_config.starttls_proto = PROTO_OFF; 891 s_client_config.verify = SSL_VERIFY_NONE; 892 893 if (((cbuf = malloc(BUFSIZZ)) == NULL) || 894 ((sbuf = malloc(BUFSIZZ)) == NULL) || 895 ((pbuf = malloc(BUFSIZZ)) == NULL) || 896 ((mbuf = malloc(BUFSIZZ + 1)) == NULL)) { /* NUL byte */ 897 BIO_printf(bio_err, "out of memory\n"); 898 goto end; 899 } 900 verify_depth = 0; 901 902 if (options_parse(argc, argv, s_client_options, NULL, NULL) != 0) { 903 badop = 1; 904 goto bad; 905 } 906 if (s_client_config.proxy != NULL) { 907 if (!extract_host_port(s_client_config.proxy, 908 &s_client_config.host, NULL, &s_client_config.port)) 909 goto bad; 910 if (s_client_config.connect == NULL) 911 s_client_config.connect = SSL_HOST_NAME; 912 } else if (s_client_config.connect != NULL) { 913 if (!extract_host_port(s_client_config.connect, 914 &s_client_config.host, NULL, &s_client_config.port)) 915 goto bad; 916 } 917 if (badop) { 918 bad: 919 if (s_client_config.errstr == NULL) 920 sc_usage(); 921 goto end; 922 } 923 924 if (!app_passwd(bio_err, s_client_config.passarg, NULL, &pass, NULL)) { 925 BIO_printf(bio_err, "Error getting password\n"); 926 goto end; 927 } 928 if (s_client_config.key_file == NULL) 929 s_client_config.key_file = s_client_config.cert_file; 930 931 932 if (s_client_config.key_file) { 933 934 key = load_key(bio_err, s_client_config.key_file, 935 s_client_config.key_format, 0, pass, 936 "client certificate private key file"); 937 if (!key) { 938 ERR_print_errors(bio_err); 939 goto end; 940 } 941 } 942 if (s_client_config.cert_file) { 943 cert = load_cert(bio_err, s_client_config.cert_file, 944 s_client_config.cert_format, 945 NULL, "client certificate file"); 946 947 if (!cert) { 948 ERR_print_errors(bio_err); 949 goto end; 950 } 951 } 952 if (s_client_config.quiet && !s_client_config.debug && 953 !s_client_config.msg) { 954 if ((bio_c_out = BIO_new(BIO_s_null())) == NULL) 955 goto end; 956 } else { 957 if ((bio_c_out = BIO_new_fp(stdout, BIO_NOCLOSE)) == NULL) 958 goto end; 959 } 960 961 ctx = SSL_CTX_new(s_client_config.meth); 962 if (ctx == NULL) { 963 ERR_print_errors(bio_err); 964 goto end; 965 } 966 967 SSL_CTX_clear_mode(ctx, SSL_MODE_AUTO_RETRY); 968 969 if (s_client_config.vpm) 970 SSL_CTX_set1_param(ctx, s_client_config.vpm); 971 972 if (!SSL_CTX_set_min_proto_version(ctx, s_client_config.min_version)) 973 goto end; 974 if (!SSL_CTX_set_max_proto_version(ctx, s_client_config.max_version)) 975 goto end; 976 977#ifndef OPENSSL_NO_SRTP 978 if (s_client_config.srtp_profiles != NULL) 979 SSL_CTX_set_tlsext_use_srtp(ctx, s_client_config.srtp_profiles); 980#endif 981 if (s_client_config.bugs) 982 SSL_CTX_set_options(ctx, SSL_OP_ALL | s_client_config.off); 983 else 984 SSL_CTX_set_options(ctx, s_client_config.off); 985 986 if (s_client_config.clr) 987 SSL_CTX_clear_options(ctx, s_client_config.clr); 988 /* 989 * DTLS: partial reads end up discarding unread UDP bytes :-( Setting 990 * read ahead solves this problem. 991 */ 992 if (s_client_config.socket_type == SOCK_DGRAM) 993 SSL_CTX_set_read_ahead(ctx, 1); 994 995 if (s_client_config.alpn_in) { 996 unsigned short alpn_len; 997 unsigned char *alpn; 998 999 alpn = next_protos_parse(&alpn_len, s_client_config.alpn_in); 1000 if (alpn == NULL) { 1001 BIO_printf(bio_err, "Error parsing -alpn argument\n"); 1002 goto end; 1003 } 1004 SSL_CTX_set_alpn_protos(ctx, alpn, alpn_len); 1005 free(alpn); 1006 } 1007 if (s_client_config.groups_in != NULL) { 1008 if (SSL_CTX_set1_groups_list(ctx, s_client_config.groups_in) != 1) { 1009 BIO_printf(bio_err, "Failed to set groups '%s'\n", 1010 s_client_config.groups_in); 1011 goto end; 1012 } 1013 } 1014 1015 if (s_client_config.state) 1016 SSL_CTX_set_info_callback(ctx, apps_ssl_info_callback); 1017 if (s_client_config.cipher != NULL) 1018 if (!SSL_CTX_set_cipher_list(ctx, s_client_config.cipher)) { 1019 BIO_printf(bio_err, "error setting cipher list\n"); 1020 ERR_print_errors(bio_err); 1021 goto end; 1022 } 1023 1024 SSL_CTX_set_verify(ctx, s_client_config.verify, verify_callback); 1025 if (!set_cert_key_stuff(ctx, cert, key)) 1026 goto end; 1027 1028 if ((s_client_config.CAfile || s_client_config.CApath) 1029 && !SSL_CTX_load_verify_locations(ctx, s_client_config.CAfile, 1030 s_client_config.CApath)) 1031 ERR_print_errors(bio_err); 1032 1033 if (!SSL_CTX_set_default_verify_paths(ctx)) 1034 ERR_print_errors(bio_err); 1035 1036 if (s_client_config.servername != NULL) { 1037 tlsextcbp.biodebug = bio_err; 1038 SSL_CTX_set_tlsext_servername_callback(ctx, ssl_servername_cb); 1039 SSL_CTX_set_tlsext_servername_arg(ctx, &tlsextcbp); 1040 } 1041 1042 con = SSL_new(ctx); 1043 if (s_client_config.sess_in) { 1044 SSL_SESSION *sess; 1045 BIO *stmp = BIO_new_file(s_client_config.sess_in, "r"); 1046 if (!stmp) { 1047 BIO_printf(bio_err, "Can't open session file %s\n", 1048 s_client_config.sess_in); 1049 ERR_print_errors(bio_err); 1050 goto end; 1051 } 1052 sess = PEM_read_bio_SSL_SESSION(stmp, NULL, 0, NULL); 1053 BIO_free(stmp); 1054 if (!sess) { 1055 BIO_printf(bio_err, "Can't open session file %s\n", 1056 s_client_config.sess_in); 1057 ERR_print_errors(bio_err); 1058 goto end; 1059 } 1060 SSL_set_session(con, sess); 1061 SSL_SESSION_free(sess); 1062 } 1063 if (s_client_config.servername != NULL) { 1064 if (!SSL_set_tlsext_host_name(con, s_client_config.servername)) { 1065 BIO_printf(bio_err, 1066 "Unable to set TLS servername extension.\n"); 1067 ERR_print_errors(bio_err); 1068 goto end; 1069 } 1070 } 1071/* SSL_set_cipher_list(con,"RC4-MD5"); */ 1072 1073 re_start: 1074 1075 if (init_client(&s, s_client_config.host, s_client_config.port, 1076 s_client_config.socket_type, s_client_config.af) == 0) { 1077 BIO_printf(bio_err, "connect:errno=%d\n", errno); 1078 goto end; 1079 } 1080 BIO_printf(bio_c_out, "CONNECTED(%08X)\n", s); 1081 1082 if (s_client_config.nbio) { 1083 if (!s_client_config.quiet) 1084 BIO_printf(bio_c_out, "turning on non blocking io\n"); 1085 if (!BIO_socket_nbio(s, 1)) { 1086 ERR_print_errors(bio_err); 1087 goto end; 1088 } 1089 } 1090 if (s_client_config.pause & 0x01) 1091 SSL_set_debug(con, 1); 1092 1093 if (SSL_version(con) == DTLS1_VERSION) { 1094 1095 sbio = BIO_new_dgram(s, BIO_NOCLOSE); 1096 if (getsockname(s, (struct sockaddr *)&peer, 1097 (void *)&peerlen) == -1) { 1098 BIO_printf(bio_err, "getsockname:errno=%d\n", 1099 errno); 1100 shutdown(s, SHUT_RD); 1101 close(s); 1102 goto end; 1103 } 1104 (void) BIO_ctrl_set_connected(sbio, 1, &peer); 1105 1106 if (s_client_config.enable_timeouts) { 1107 timeout.tv_sec = 0; 1108 timeout.tv_usec = DGRAM_RCV_TIMEOUT; 1109 BIO_ctrl(sbio, BIO_CTRL_DGRAM_SET_RECV_TIMEOUT, 0, 1110 &timeout); 1111 1112 timeout.tv_sec = 0; 1113 timeout.tv_usec = DGRAM_SND_TIMEOUT; 1114 BIO_ctrl(sbio, BIO_CTRL_DGRAM_SET_SEND_TIMEOUT, 0, 1115 &timeout); 1116 } 1117 if (s_client_config.socket_mtu > 28) { 1118 SSL_set_options(con, SSL_OP_NO_QUERY_MTU); 1119 SSL_set_mtu(con, s_client_config.socket_mtu - 28); 1120 } else 1121 /* want to do MTU discovery */ 1122 BIO_ctrl(sbio, BIO_CTRL_DGRAM_MTU_DISCOVER, 0, NULL); 1123 } else 1124 sbio = BIO_new_socket(s, BIO_NOCLOSE); 1125 1126 if (s_client_config.nbio_test) { 1127 BIO *test; 1128 1129 test = BIO_new(BIO_f_nbio_test()); 1130 sbio = BIO_push(test, sbio); 1131 } 1132 if (s_client_config.debug) { 1133 SSL_set_debug(con, 1); 1134 BIO_set_callback(sbio, bio_dump_callback); 1135 BIO_set_callback_arg(sbio, (char *) bio_c_out); 1136 } 1137 if (s_client_config.msg) { 1138 SSL_set_msg_callback(con, msg_cb); 1139 SSL_set_msg_callback_arg(con, bio_c_out); 1140 } 1141 if (s_client_config.tlsextdebug) { 1142 SSL_set_tlsext_debug_callback(con, tlsext_cb); 1143 SSL_set_tlsext_debug_arg(con, bio_c_out); 1144 } 1145 if (s_client_config.status_req) { 1146 SSL_set_tlsext_status_type(con, TLSEXT_STATUSTYPE_ocsp); 1147 SSL_CTX_set_tlsext_status_cb(ctx, ocsp_resp_cb); 1148 SSL_CTX_set_tlsext_status_arg(ctx, bio_c_out); 1149 } 1150 1151 SSL_set_bio(con, sbio, sbio); 1152 SSL_set_connect_state(con); 1153 1154 /* ok, lets connect */ 1155 read_tty = 1; 1156 write_tty = 0; 1157 tty_on = 0; 1158 read_ssl = 1; 1159 write_ssl = 1; 1160 1161 cbuf_len = 0; 1162 cbuf_off = 0; 1163 sbuf_len = 0; 1164 sbuf_off = 0; 1165 pbuf_len = 0; 1166 pbuf_off = 0; 1167 1168 /* This is an ugly hack that does a lot of assumptions */ 1169 /* 1170 * We do have to handle multi-line responses which may come in a 1171 * single packet or not. We therefore have to use BIO_gets() which 1172 * does need a buffering BIO. So during the initial chitchat we do 1173 * push a buffering BIO into the chain that is removed again later on 1174 * to not disturb the rest of the s_client operation. 1175 */ 1176 if (s_client_config.starttls_proto == PROTO_SMTP || 1177 s_client_config.starttls_proto == PROTO_LMTP) { 1178 int foundit = 0; 1179 BIO *fbio = BIO_new(BIO_f_buffer()); 1180 BIO_push(fbio, sbio); 1181 /* wait for multi-line response to end from SMTP */ 1182 do { 1183 mbuf_len = BIO_gets(fbio, mbuf, BUFSIZZ); 1184 } 1185 while (mbuf_len > 3 && mbuf[3] == '-'); 1186 /* STARTTLS command requires EHLO... */ 1187 BIO_printf(fbio, "%cHLO openssl.client.net\r\n", 1188 s_client_config.starttls_proto == PROTO_SMTP ? 'E' : 'L'); 1189 (void) BIO_flush(fbio); 1190 /* wait for multi-line response to end EHLO SMTP response */ 1191 do { 1192 mbuf_len = BIO_gets(fbio, mbuf, BUFSIZZ); 1193 if (strstr(mbuf, "STARTTLS")) 1194 foundit = 1; 1195 } 1196 while (mbuf_len > 3 && mbuf[3] == '-'); 1197 (void) BIO_flush(fbio); 1198 BIO_pop(fbio); 1199 BIO_free(fbio); 1200 if (!foundit) 1201 BIO_printf(bio_err, 1202 "didn't find starttls in server response," 1203 " try anyway...\n"); 1204 BIO_printf(sbio, "STARTTLS\r\n"); 1205 BIO_read(sbio, sbuf, BUFSIZZ); 1206 } else if (s_client_config.starttls_proto == PROTO_POP3) { 1207 mbuf_len = BIO_read(sbio, mbuf, BUFSIZZ); 1208 if (mbuf_len == -1) { 1209 BIO_printf(bio_err, "BIO_read failed\n"); 1210 goto end; 1211 } 1212 BIO_printf(sbio, "STLS\r\n"); 1213 BIO_read(sbio, sbuf, BUFSIZZ); 1214 } else if (s_client_config.starttls_proto == PROTO_IMAP) { 1215 int foundit = 0; 1216 BIO *fbio = BIO_new(BIO_f_buffer()); 1217 BIO_push(fbio, sbio); 1218 BIO_gets(fbio, mbuf, BUFSIZZ); 1219 /* STARTTLS command requires CAPABILITY... */ 1220 BIO_printf(fbio, ". CAPABILITY\r\n"); 1221 (void) BIO_flush(fbio); 1222 /* wait for multi-line CAPABILITY response */ 1223 do { 1224 mbuf_len = BIO_gets(fbio, mbuf, BUFSIZZ); 1225 if (strstr(mbuf, "STARTTLS")) 1226 foundit = 1; 1227 } 1228 while (mbuf_len > 3 && mbuf[0] != '.'); 1229 (void) BIO_flush(fbio); 1230 BIO_pop(fbio); 1231 BIO_free(fbio); 1232 if (!foundit) 1233 BIO_printf(bio_err, 1234 "didn't find STARTTLS in server response," 1235 " try anyway...\n"); 1236 BIO_printf(sbio, ". STARTTLS\r\n"); 1237 BIO_read(sbio, sbuf, BUFSIZZ); 1238 } else if (s_client_config.starttls_proto == PROTO_FTP) { 1239 BIO *fbio = BIO_new(BIO_f_buffer()); 1240 BIO_push(fbio, sbio); 1241 /* wait for multi-line response to end from FTP */ 1242 do { 1243 mbuf_len = BIO_gets(fbio, mbuf, BUFSIZZ); 1244 } 1245 while (mbuf_len > 3 && mbuf[3] == '-'); 1246 (void) BIO_flush(fbio); 1247 BIO_pop(fbio); 1248 BIO_free(fbio); 1249 BIO_printf(sbio, "AUTH TLS\r\n"); 1250 BIO_read(sbio, sbuf, BUFSIZZ); 1251 } else if (s_client_config.starttls_proto == PROTO_XMPP) { 1252 int seen = 0; 1253 BIO_printf(sbio, "<stream:stream " 1254 "xmlns:stream='http://etherx.jabber.org/streams' " 1255 "xmlns='jabber:client' to='%s' version='1.0'>", 1256 s_client_config.xmpphost ? 1257 s_client_config.xmpphost : s_client_config.host); 1258 seen = BIO_read(sbio, mbuf, BUFSIZZ); 1259 1260 if (seen <= 0) 1261 goto shut; 1262 1263 mbuf[seen] = 0; 1264 while (!strstr(mbuf, "<starttls xmlns='urn:ietf:params:xml:ns:xmpp-tls'") && 1265 !strstr(mbuf, "<starttls xmlns=\"urn:ietf:params:xml:ns:xmpp-tls\"")) { 1266 seen = BIO_read(sbio, mbuf, BUFSIZZ); 1267 1268 if (seen <= 0) 1269 goto shut; 1270 1271 mbuf[seen] = 0; 1272 } 1273 BIO_printf(sbio, 1274 "<starttls xmlns='urn:ietf:params:xml:ns:xmpp-tls'/>"); 1275 seen = BIO_read(sbio, sbuf, BUFSIZZ); 1276 sbuf[seen] = 0; 1277 if (!strstr(sbuf, "<proceed")) 1278 goto shut; 1279 mbuf[0] = 0; 1280 } else if (s_client_config.proxy != NULL) { 1281 BIO_printf(sbio, "CONNECT %s HTTP/1.0\r\n\r\n", 1282 s_client_config.connect); 1283 mbuf_len = BIO_read(sbio, mbuf, BUFSIZZ); 1284 if (mbuf_len == -1) { 1285 BIO_printf(bio_err, "BIO_read failed\n"); 1286 goto end; 1287 } 1288 } 1289 for (;;) { 1290 struct pollfd pfd[3]; /* stdin, stdout, socket */ 1291 int ptimeout = -1; 1292 1293 if ((SSL_version(con) == DTLS1_VERSION) && 1294 DTLSv1_get_timeout(con, &timeout)) 1295 ptimeout = timeout.tv_sec * 1000 + 1296 timeout.tv_usec / 1000; 1297 1298 if (SSL_in_init(con) && !SSL_total_renegotiations(con)) { 1299 in_init = 1; 1300 tty_on = 0; 1301 } else { 1302 tty_on = 1; 1303 if (in_init) { 1304 in_init = 0; 1305 if (s_client_config.sess_out) { 1306 BIO *stmp = BIO_new_file( 1307 s_client_config.sess_out, "w"); 1308 if (stmp) { 1309 PEM_write_bio_SSL_SESSION(stmp, 1310 SSL_get_session(con)); 1311 BIO_free(stmp); 1312 } else 1313 BIO_printf(bio_err, 1314 "Error writing session file %s\n", 1315 s_client_config.sess_out); 1316 } 1317 print_stuff(bio_c_out, con, full_log); 1318 if (full_log > 0) 1319 full_log--; 1320 1321 if (s_client_config.starttls_proto) { 1322 BIO_write(bio_err, mbuf, mbuf_len); 1323 /* We don't need to know any more */ 1324 s_client_config.starttls_proto = PROTO_OFF; 1325 } 1326 if (s_client_config.reconnect) { 1327 s_client_config.reconnect--; 1328 BIO_printf(bio_c_out, 1329 "drop connection and then reconnect\n"); 1330 SSL_shutdown(con); 1331 SSL_set_connect_state(con); 1332 shutdown(SSL_get_fd(con), SHUT_RD); 1333 close(SSL_get_fd(con)); 1334 goto re_start; 1335 } 1336 } 1337 } 1338 1339 ssl_pending = read_ssl && SSL_pending(con); 1340 1341 pfd[0].fd = -1; 1342 pfd[1].fd = -1; 1343 if (!ssl_pending) { 1344 if (tty_on) { 1345 if (read_tty) { 1346 pfd[0].fd = fileno(stdin); 1347 pfd[0].events = POLLIN; 1348 } 1349 if (write_tty) { 1350 pfd[1].fd = fileno(stdout); 1351 pfd[1].events = POLLOUT; 1352 } 1353 } 1354 1355 pfd[2].fd = SSL_get_fd(con); 1356 pfd[2].events = 0; 1357 if (read_ssl) 1358 pfd[2].events |= POLLIN; 1359 if (write_ssl) 1360 pfd[2].events |= POLLOUT; 1361 1362/* printf("mode tty(%d %d%d) ssl(%d%d)\n", 1363 tty_on,read_tty,write_tty,read_ssl,write_ssl);*/ 1364 1365 i = poll(pfd, 3, ptimeout); 1366 if (i == -1) { 1367 BIO_printf(bio_err, "bad select %d\n", 1368 errno); 1369 goto shut; 1370 /* goto end; */ 1371 } 1372 } 1373 if ((SSL_version(con) == DTLS1_VERSION) && 1374 DTLSv1_handle_timeout(con) > 0) { 1375 BIO_printf(bio_err, "TIMEOUT occured\n"); 1376 } 1377 if (!ssl_pending && 1378 (pfd[2].revents & (POLLOUT|POLLERR|POLLNVAL))) { 1379 if (pfd[2].revents & (POLLERR|POLLNVAL)) { 1380 BIO_printf(bio_err, "poll error"); 1381 goto shut; 1382 } 1383 k = SSL_write(con, &(cbuf[cbuf_off]), 1384 (unsigned int) cbuf_len); 1385 switch (SSL_get_error(con, k)) { 1386 case SSL_ERROR_NONE: 1387 cbuf_off += k; 1388 cbuf_len -= k; 1389 if (k <= 0) 1390 goto end; 1391 /* we have done a write(con,NULL,0); */ 1392 if (cbuf_len <= 0) { 1393 read_tty = 1; 1394 write_ssl = 0; 1395 } else { /* if (cbuf_len > 0) */ 1396 read_tty = 0; 1397 write_ssl = 1; 1398 } 1399 break; 1400 case SSL_ERROR_WANT_WRITE: 1401 BIO_printf(bio_c_out, "write W BLOCK\n"); 1402 write_ssl = 1; 1403 read_tty = 0; 1404 break; 1405 case SSL_ERROR_WANT_READ: 1406 BIO_printf(bio_c_out, "write R BLOCK\n"); 1407 write_tty = 0; 1408 read_ssl = 1; 1409 write_ssl = 0; 1410 break; 1411 case SSL_ERROR_WANT_X509_LOOKUP: 1412 BIO_printf(bio_c_out, "write X BLOCK\n"); 1413 break; 1414 case SSL_ERROR_ZERO_RETURN: 1415 if (cbuf_len != 0) { 1416 BIO_printf(bio_c_out, "shutdown\n"); 1417 ret = 0; 1418 goto shut; 1419 } else { 1420 read_tty = 1; 1421 write_ssl = 0; 1422 break; 1423 } 1424 1425 case SSL_ERROR_SYSCALL: 1426 if ((k != 0) || (cbuf_len != 0)) { 1427 BIO_printf(bio_err, "write:errno=%d\n", 1428 errno); 1429 goto shut; 1430 } else { 1431 read_tty = 1; 1432 write_ssl = 0; 1433 } 1434 break; 1435 case SSL_ERROR_SSL: 1436 ERR_print_errors(bio_err); 1437 goto shut; 1438 } 1439 } else if (!ssl_pending && 1440 (pfd[1].revents & (POLLOUT|POLLERR|POLLNVAL))) { 1441 if (pfd[1].revents & (POLLERR|POLLNVAL)) { 1442 BIO_printf(bio_err, "poll error"); 1443 goto shut; 1444 } 1445 i = write(fileno(stdout), &(sbuf[sbuf_off]), sbuf_len); 1446 1447 if (i <= 0) { 1448 BIO_printf(bio_c_out, "DONE\n"); 1449 ret = 0; 1450 goto shut; 1451 /* goto end; */ 1452 } 1453 sbuf_len -= i; 1454 sbuf_off += i; 1455 if (sbuf_len <= 0) { 1456 read_ssl = 1; 1457 write_tty = 0; 1458 } 1459 } else if (ssl_pending || (pfd[2].revents & (POLLIN|POLLHUP))) { 1460#ifdef RENEG 1461 { 1462 static int iiii; 1463 if (++iiii == 52) { 1464 SSL_renegotiate(con); 1465 iiii = 0; 1466 } 1467 } 1468#endif 1469 if (s_client_config.peekaboo) { 1470 k = p = SSL_peek(con, pbuf, 1024 /* BUFSIZZ */ ); 1471 pending = SSL_pending(con); 1472 if (SSL_get_error(con, p) == SSL_ERROR_NONE) { 1473 if (p <= 0) 1474 goto end; 1475 pbuf_off = 0; 1476 pbuf_len = p; 1477 1478 k = SSL_read(con, sbuf, p); 1479 } 1480 } else { 1481 k = SSL_read(con, sbuf, 1024 /* BUFSIZZ */ ); 1482 } 1483 1484 switch (SSL_get_error(con, k)) { 1485 case SSL_ERROR_NONE: 1486 if (k <= 0) 1487 goto end; 1488 sbuf_off = 0; 1489 sbuf_len = k; 1490 if (s_client_config.peekaboo) { 1491 if (p != pending) { 1492 ret = -1; 1493 BIO_printf(bio_err, 1494 "peeked %d but pending %d!\n", 1495 p, pending); 1496 goto shut; 1497 } 1498 if (k < p) { 1499 ret = -1; 1500 BIO_printf(bio_err, 1501 "read less than peek!\n"); 1502 goto shut; 1503 } 1504 if (p > 0 && 1505 (memcmp(sbuf, pbuf, p) != 0)) { 1506 ret = -1; 1507 BIO_printf(bio_err, 1508 "peek of %d different from read of %d!\n", 1509 p, k); 1510 goto shut; 1511 } 1512 } 1513 read_ssl = 0; 1514 write_tty = 1; 1515 break; 1516 case SSL_ERROR_WANT_WRITE: 1517 BIO_printf(bio_c_out, "read W BLOCK\n"); 1518 write_ssl = 1; 1519 read_tty = 0; 1520 break; 1521 case SSL_ERROR_WANT_READ: 1522 BIO_printf(bio_c_out, "read R BLOCK\n"); 1523 write_tty = 0; 1524 read_ssl = 1; 1525 if ((read_tty == 0) && (write_ssl == 0)) 1526 write_ssl = 1; 1527 break; 1528 case SSL_ERROR_WANT_X509_LOOKUP: 1529 BIO_printf(bio_c_out, "read X BLOCK\n"); 1530 break; 1531 case SSL_ERROR_SYSCALL: 1532 ret = errno; 1533 BIO_printf(bio_err, "read:errno=%d\n", ret); 1534 goto shut; 1535 case SSL_ERROR_ZERO_RETURN: 1536 BIO_printf(bio_c_out, "closed\n"); 1537 ret = 0; 1538 goto shut; 1539 case SSL_ERROR_SSL: 1540 ERR_print_errors(bio_err); 1541 goto shut; 1542 /* break; */ 1543 } 1544 } else if (pfd[0].revents) { 1545 if (pfd[0].revents & (POLLERR|POLLNVAL)) { 1546 BIO_printf(bio_err, "poll error"); 1547 goto shut; 1548 } 1549 if (s_client_config.crlf) { 1550 int j, lf_num; 1551 1552 i = read(fileno(stdin), cbuf, BUFSIZZ / 2); 1553 lf_num = 0; 1554 /* both loops are skipped when i <= 0 */ 1555 for (j = 0; j < i; j++) 1556 if (cbuf[j] == '\n') 1557 lf_num++; 1558 for (j = i - 1; j >= 0; j--) { 1559 cbuf[j + lf_num] = cbuf[j]; 1560 if (cbuf[j] == '\n') { 1561 lf_num--; 1562 i++; 1563 cbuf[j + lf_num] = '\r'; 1564 } 1565 } 1566 assert(lf_num == 0); 1567 } else 1568 i = read(fileno(stdin), cbuf, BUFSIZZ); 1569 1570 if ((!s_client_config.ign_eof) && 1571 ((i <= 0) || (cbuf[0] == 'Q'))) { 1572 BIO_printf(bio_err, "DONE\n"); 1573 ret = 0; 1574 goto shut; 1575 } 1576 if ((!s_client_config.ign_eof) && (cbuf[0] == 'R')) { 1577 BIO_printf(bio_err, "RENEGOTIATING\n"); 1578 SSL_renegotiate(con); 1579 cbuf_len = 0; 1580 } else { 1581 cbuf_len = i; 1582 cbuf_off = 0; 1583 } 1584 1585 write_ssl = 1; 1586 read_tty = 0; 1587 } 1588 } 1589 1590 ret = 0; 1591 shut: 1592 if (in_init) 1593 print_stuff(bio_c_out, con, full_log); 1594 SSL_shutdown(con); 1595 shutdown(SSL_get_fd(con), SHUT_RD); 1596 close(SSL_get_fd(con)); 1597 end: 1598 if (con != NULL) { 1599 if (s_client_config.prexit != 0) 1600 print_stuff(bio_c_out, con, 1); 1601 SSL_free(con); 1602 } 1603 SSL_CTX_free(ctx); 1604 X509_free(cert); 1605 EVP_PKEY_free(key); 1606 free(pass); 1607 X509_VERIFY_PARAM_free(s_client_config.vpm); 1608 freezero(cbuf, BUFSIZZ); 1609 freezero(sbuf, BUFSIZZ); 1610 freezero(pbuf, BUFSIZZ); 1611 freezero(mbuf, BUFSIZZ); 1612 BIO_free(bio_c_out); 1613 1614 return (ret); 1615} 1616 1617static void 1618print_stuff(BIO *bio, SSL *s, int full) 1619{ 1620 X509 *peer = NULL; 1621 char *p; 1622 static const char *space = " "; 1623 char buf[BUFSIZ]; 1624 STACK_OF(X509) *sk; 1625 STACK_OF(X509_NAME) *sk2; 1626 const SSL_CIPHER *c; 1627 X509_NAME *xn; 1628 int j, i; 1629 unsigned char *exportedkeymat; 1630 1631 if (full) { 1632 int got_a_chain = 0; 1633 1634 sk = SSL_get_peer_cert_chain(s); 1635 if (sk != NULL) { 1636 got_a_chain = 1; /* we don't have it for SSL2 1637 * (yet) */ 1638 1639 BIO_printf(bio, "---\nCertificate chain\n"); 1640 for (i = 0; i < sk_X509_num(sk); i++) { 1641 X509_NAME_oneline(X509_get_subject_name( 1642 sk_X509_value(sk, i)), buf, sizeof buf); 1643 BIO_printf(bio, "%2d s:%s\n", i, buf); 1644 X509_NAME_oneline(X509_get_issuer_name( 1645 sk_X509_value(sk, i)), buf, sizeof buf); 1646 BIO_printf(bio, " i:%s\n", buf); 1647 if (s_client_config.showcerts) 1648 PEM_write_bio_X509(bio, 1649 sk_X509_value(sk, i)); 1650 } 1651 } 1652 BIO_printf(bio, "---\n"); 1653 peer = SSL_get_peer_certificate(s); 1654 if (peer != NULL) { 1655 BIO_printf(bio, "Server certificate\n"); 1656 if (!(s_client_config.showcerts && got_a_chain)) { 1657 /* Redundant if we showed the whole chain */ 1658 PEM_write_bio_X509(bio, peer); 1659 } 1660 X509_NAME_oneline(X509_get_subject_name(peer), 1661 buf, sizeof buf); 1662 BIO_printf(bio, "subject=%s\n", buf); 1663 X509_NAME_oneline(X509_get_issuer_name(peer), 1664 buf, sizeof buf); 1665 BIO_printf(bio, "issuer=%s\n", buf); 1666 } else 1667 BIO_printf(bio, "no peer certificate available\n"); 1668 1669 sk2 = SSL_get_client_CA_list(s); 1670 if ((sk2 != NULL) && (sk_X509_NAME_num(sk2) > 0)) { 1671 BIO_printf(bio, 1672 "---\nAcceptable client certificate CA names\n"); 1673 for (i = 0; i < sk_X509_NAME_num(sk2); i++) { 1674 xn = sk_X509_NAME_value(sk2, i); 1675 X509_NAME_oneline(xn, buf, sizeof(buf)); 1676 BIO_write(bio, buf, strlen(buf)); 1677 BIO_write(bio, "\n", 1); 1678 } 1679 } else { 1680 BIO_printf(bio, 1681 "---\nNo client certificate CA names sent\n"); 1682 } 1683 p = SSL_get_shared_ciphers(s, buf, sizeof buf); 1684 if (p != NULL) { 1685 /* 1686 * This works only for SSL 2. In later protocol 1687 * versions, the client does not know what other 1688 * ciphers (in addition to the one to be used in the 1689 * current connection) the server supports. 1690 */ 1691 1692 BIO_printf(bio, 1693 "---\nCiphers common between both SSL endpoints:\n"); 1694 j = i = 0; 1695 while (*p) { 1696 if (*p == ':') { 1697 BIO_write(bio, space, 15 - j % 25); 1698 i++; 1699 j = 0; 1700 BIO_write(bio, 1701 ((i % 3) ? " " : "\n"), 1); 1702 } else { 1703 BIO_write(bio, p, 1); 1704 j++; 1705 } 1706 p++; 1707 } 1708 BIO_write(bio, "\n", 1); 1709 } 1710 1711 ssl_print_tmp_key(bio, s); 1712 1713 BIO_printf(bio, 1714 "---\nSSL handshake has read %ld bytes and written %ld bytes\n", 1715 BIO_number_read(SSL_get_rbio(s)), 1716 BIO_number_written(SSL_get_wbio(s))); 1717 } 1718 BIO_printf(bio, (SSL_cache_hit(s) ? "---\nReused, " : "---\nNew, ")); 1719 c = SSL_get_current_cipher(s); 1720 BIO_printf(bio, "%s, Cipher is %s\n", 1721 SSL_CIPHER_get_version(c), 1722 SSL_CIPHER_get_name(c)); 1723 if (peer != NULL) { 1724 EVP_PKEY *pktmp; 1725 pktmp = X509_get_pubkey(peer); 1726 BIO_printf(bio, "Server public key is %d bit\n", 1727 EVP_PKEY_bits(pktmp)); 1728 EVP_PKEY_free(pktmp); 1729 } 1730 BIO_printf(bio, "Secure Renegotiation IS%s supported\n", 1731 SSL_get_secure_renegotiation_support(s) ? "" : " NOT"); 1732 1733 /* Compression is not supported and will always be none. */ 1734 BIO_printf(bio, "Compression: NONE\n"); 1735 BIO_printf(bio, "Expansion: NONE\n"); 1736 1737#ifdef SSL_DEBUG 1738 { 1739 /* Print out local port of connection: useful for debugging */ 1740 int sock; 1741 struct sockaddr_in ladd; 1742 socklen_t ladd_size = sizeof(ladd); 1743 sock = SSL_get_fd(s); 1744 getsockname(sock, (struct sockaddr *) & ladd, &ladd_size); 1745 BIO_printf(bio, "LOCAL PORT is %u\n", 1746 ntohs(ladd.sin_port)); 1747 } 1748#endif 1749 1750 { 1751 const unsigned char *proto; 1752 unsigned int proto_len; 1753 SSL_get0_alpn_selected(s, &proto, &proto_len); 1754 if (proto_len > 0) { 1755 BIO_printf(bio, "ALPN protocol: "); 1756 BIO_write(bio, proto, proto_len); 1757 BIO_write(bio, "\n", 1); 1758 } else 1759 BIO_printf(bio, "No ALPN negotiated\n"); 1760 } 1761 1762#ifndef OPENSSL_NO_SRTP 1763 { 1764 SRTP_PROTECTION_PROFILE *srtp_profile; 1765 1766 srtp_profile = SSL_get_selected_srtp_profile(s); 1767 if (srtp_profile) 1768 BIO_printf(bio, 1769 "SRTP Extension negotiated, profile=%s\n", 1770 srtp_profile->name); 1771 } 1772#endif 1773 1774 SSL_SESSION_print(bio, SSL_get_session(s)); 1775 if (s_client_config.keymatexportlabel != NULL) { 1776 BIO_printf(bio, "Keying material exporter:\n"); 1777 BIO_printf(bio, " Label: '%s'\n", 1778 s_client_config.keymatexportlabel); 1779 BIO_printf(bio, " Length: %i bytes\n", 1780 s_client_config.keymatexportlen); 1781 exportedkeymat = malloc(s_client_config.keymatexportlen); 1782 if (exportedkeymat != NULL) { 1783 if (!SSL_export_keying_material(s, exportedkeymat, 1784 s_client_config.keymatexportlen, 1785 s_client_config.keymatexportlabel, 1786 strlen(s_client_config.keymatexportlabel), 1787 NULL, 0, 0)) { 1788 BIO_printf(bio, " Error\n"); 1789 } else { 1790 BIO_printf(bio, " Keying material: "); 1791 for (i = 0; i < s_client_config.keymatexportlen; i++) 1792 BIO_printf(bio, "%02X", 1793 exportedkeymat[i]); 1794 BIO_printf(bio, "\n"); 1795 } 1796 free(exportedkeymat); 1797 } 1798 } 1799 BIO_printf(bio, "---\n"); 1800 X509_free(peer); 1801 /* flush, or debugging output gets mixed with http response */ 1802 (void) BIO_flush(bio); 1803} 1804 1805static int 1806ocsp_resp_cb(SSL *s, void *arg) 1807{ 1808 const unsigned char *p; 1809 int len; 1810 OCSP_RESPONSE *rsp; 1811 len = SSL_get_tlsext_status_ocsp_resp(s, &p); 1812 BIO_puts(arg, "OCSP response: "); 1813 if (!p) { 1814 BIO_puts(arg, "no response sent\n"); 1815 return 1; 1816 } 1817 rsp = d2i_OCSP_RESPONSE(NULL, &p, len); 1818 if (!rsp) { 1819 BIO_puts(arg, "response parse error\n"); 1820 BIO_dump_indent(arg, (char *) p, len, 4); 1821 return 0; 1822 } 1823 BIO_puts(arg, "\n======================================\n"); 1824 OCSP_RESPONSE_print(arg, rsp, 0); 1825 BIO_puts(arg, "======================================\n"); 1826 OCSP_RESPONSE_free(rsp); 1827 return 1; 1828} 1829 1830static int 1831ssl_servername_cb(SSL *s, int *ad, void *arg) 1832{ 1833 tlsextctx *p = (tlsextctx *) arg; 1834 const char *hn = SSL_get_servername(s, TLSEXT_NAMETYPE_host_name); 1835 if (SSL_get_servername_type(s) != -1) 1836 p->ack = !SSL_session_reused(s) && hn != NULL; 1837 else 1838 BIO_printf(bio_err, "Can't use SSL_get_servername\n"); 1839 1840 return SSL_TLSEXT_ERR_OK; 1841} 1842 1843