1 /* apps/s_client.c */ 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) 1998-2001 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 #include <assert.h> 113 #include <stdio.h> 114 #include <stdlib.h> 115 #include <string.h> 116 #include <openssl/e_os2.h> 117 #ifdef OPENSSL_NO_STDIO 118 #define APPS_WIN16 119 #endif 120 121 /* With IPv6, it looks like Digital has mixed up the proper order of 122 recursive header file inclusion, resulting in the compiler complaining 123 that u_int isn't defined, but only if _POSIX_C_SOURCE is defined, which 124 is needed to have fileno() declared correctly... So let's define u_int */ 125 #if defined(OPENSSL_SYS_VMS_DECC) && !defined(__U_INT) 126 #define __U_INT 127 typedef unsigned int u_int; 128 #endif 129 130 #define USE_SOCKETS 131 #include "apps.h" 132 #include <openssl/x509.h> 133 #include <openssl/ssl.h> 134 #include <openssl/err.h> 135 #include <openssl/pem.h> 136 #include <openssl/rand.h> 137 #include "s_apps.h" 138 139 #ifdef OPENSSL_SYS_WINDOWS 140 #include <conio.h> 141 #endif 142 143 #ifdef OPENSSL_SYS_WINCE 144 /* Windows CE incorrectly defines fileno as returning void*, so to avoid problems below... */ 145 #ifdef fileno 146 #undef fileno 147 #endif 148 #define fileno(a) (int)_fileno(a) 149 #endif 150 151 152 #if (defined(OPENSSL_SYS_VMS) && __VMS_VER < 70000000) 153 /* FIONBIO used as a switch to enable ioctl, and that isn't in VMS < 7.0 */ 154 #undef FIONBIO 155 #endif 156 157 #undef PROG 158 #define PROG s_client_main 159 160 /*#define SSL_HOST_NAME "www.netscape.com" */ 161 /*#define SSL_HOST_NAME "193.118.187.102" */ 162 #define SSL_HOST_NAME "localhost" 163 164 /*#define TEST_CERT "client.pem" */ /* no default cert. */ 165 166 #undef BUFSIZZ 167 #define BUFSIZZ 1024*8 168 169 extern int verify_depth; 170 extern int verify_error; 171 172 #ifdef FIONBIO 173 static int c_nbio=0; 174 #endif 175 static int c_Pause=0; 176 static int c_debug=0; 177 static int c_msg=0; 178 static int c_showcerts=0; 179 180 static void sc_usage(void); 181 static void print_stuff(BIO *berr,SSL *con,int full); 182 static BIO *bio_c_out=NULL; 183 static int c_quiet=0; 184 static int c_ign_eof=0; 185 186 static void sc_usage(void) 187 { 188 BIO_printf(bio_err,"usage: s_client args\n"); 189 BIO_printf(bio_err,"\n"); 190 BIO_printf(bio_err," -host host - use -connect instead\n"); 191 BIO_printf(bio_err," -port port - use -connect instead\n"); 192 BIO_printf(bio_err," -connect host:port - who to connect to (default is %s:%s)\n",SSL_HOST_NAME,PORT_STR); 193 194 BIO_printf(bio_err," -verify arg - turn on peer certificate verification\n"); 195 BIO_printf(bio_err," -cert arg - certificate file to use, PEM format assumed\n"); 196 BIO_printf(bio_err," -key arg - Private key file to use, PEM format assumed, in cert file if\n"); 197 BIO_printf(bio_err," not specified but cert file is.\n"); 198 BIO_printf(bio_err," -CApath arg - PEM format directory of CA's\n"); 199 BIO_printf(bio_err," -CAfile arg - PEM format file of CA's\n"); 200 BIO_printf(bio_err," -reconnect - Drop and re-make the connection with the same Session-ID\n"); 201 BIO_printf(bio_err," -pause - sleep(1) after each read(2) and write(2) system call\n"); 202 BIO_printf(bio_err," -showcerts - show all certificates in the chain\n"); 203 BIO_printf(bio_err," -debug - extra output\n"); 204 BIO_printf(bio_err," -msg - Show protocol messages\n"); 205 BIO_printf(bio_err," -nbio_test - more ssl protocol testing\n"); 206 BIO_printf(bio_err," -state - print the 'ssl' states\n"); 207 #ifdef FIONBIO 208 BIO_printf(bio_err," -nbio - Run with non-blocking IO\n"); 209 #endif 210 BIO_printf(bio_err," -crlf - convert LF from terminal into CRLF\n"); 211 BIO_printf(bio_err," -quiet - no s_client output\n"); 212 BIO_printf(bio_err," -ign_eof - ignore input eof (default when -quiet)\n"); 213 BIO_printf(bio_err," -ssl2 - just use SSLv2\n"); 214 BIO_printf(bio_err," -ssl3 - just use SSLv3\n"); 215 BIO_printf(bio_err," -tls1 - just use TLSv1\n"); 216 BIO_printf(bio_err," -no_tls1/-no_ssl3/-no_ssl2 - turn off that protocol\n"); 217 BIO_printf(bio_err," -bugs - Switch on all SSL implementation bug workarounds\n"); 218 BIO_printf(bio_err," -serverpref - Use server's cipher preferences (only SSLv2)\n"); 219 BIO_printf(bio_err," -cipher - preferred cipher to use, use the 'openssl ciphers'\n"); 220 BIO_printf(bio_err," command to see what is available\n"); 221 BIO_printf(bio_err," -starttls prot - use the STARTTLS command before starting TLS\n"); 222 BIO_printf(bio_err," for those protocols that support it, where\n"); 223 BIO_printf(bio_err," 'prot' defines which one to assume. Currently,\n"); 224 BIO_printf(bio_err," only \"smtp\" is supported.\n"); 225 BIO_printf(bio_err," -engine id - Initialise and use the specified engine\n"); 226 BIO_printf(bio_err," -rand file%cfile%c...\n", LIST_SEPARATOR_CHAR, LIST_SEPARATOR_CHAR); 227 228 } 229 230 int MAIN(int, char **); 231 232 int MAIN(int argc, char **argv) 233 { 234 int off=0; 235 SSL *con=NULL,*con2=NULL; 236 X509_STORE *store = NULL; 237 int s,k,width,state=0; 238 char *cbuf=NULL,*sbuf=NULL,*mbuf=NULL; 239 int cbuf_len,cbuf_off; 240 int sbuf_len,sbuf_off; 241 fd_set readfds,writefds; 242 short port=PORT; 243 int full_log=1; 244 char *host=SSL_HOST_NAME; 245 char *cert_file=NULL,*key_file=NULL; 246 char *CApath=NULL,*CAfile=NULL,*cipher=NULL; 247 int reconnect=0,badop=0,verify=SSL_VERIFY_NONE,bugs=0; 248 int crlf=0; 249 int write_tty,read_tty,write_ssl,read_ssl,tty_on,ssl_pending; 250 SSL_CTX *ctx=NULL; 251 int ret=1,in_init=1,i,nbio_test=0; 252 int smtp_starttls = 0; 253 int prexit = 0, vflags = 0; 254 SSL_METHOD *meth=NULL; 255 BIO *sbio; 256 char *inrand=NULL; 257 char *engine_id=NULL; 258 ENGINE *e=NULL; 259 #ifdef OPENSSL_SYS_WINDOWS 260 struct timeval tv; 261 #endif 262 263 #if !defined(OPENSSL_NO_SSL2) && !defined(OPENSSL_NO_SSL3) 264 meth=SSLv23_client_method(); 265 #elif !defined(OPENSSL_NO_SSL3) 266 meth=SSLv3_client_method(); 267 #elif !defined(OPENSSL_NO_SSL2) 268 meth=SSLv2_client_method(); 269 #endif 270 271 apps_startup(); 272 c_Pause=0; 273 c_quiet=0; 274 c_ign_eof=0; 275 c_debug=0; 276 c_msg=0; 277 c_showcerts=0; 278 279 if (bio_err == NULL) 280 bio_err=BIO_new_fp(stderr,BIO_NOCLOSE); 281 282 if (!load_config(bio_err, NULL)) 283 goto end; 284 285 if ( ((cbuf=OPENSSL_malloc(BUFSIZZ)) == NULL) || 286 ((sbuf=OPENSSL_malloc(BUFSIZZ)) == NULL) || 287 ((mbuf=OPENSSL_malloc(BUFSIZZ)) == NULL)) 288 { 289 BIO_printf(bio_err,"out of memory\n"); 290 goto end; 291 } 292 293 verify_depth=0; 294 verify_error=X509_V_OK; 295 #ifdef FIONBIO 296 c_nbio=0; 297 #endif 298 299 argc--; 300 argv++; 301 while (argc >= 1) 302 { 303 if (strcmp(*argv,"-host") == 0) 304 { 305 if (--argc < 1) goto bad; 306 host= *(++argv); 307 } 308 else if (strcmp(*argv,"-port") == 0) 309 { 310 if (--argc < 1) goto bad; 311 port=atoi(*(++argv)); 312 if (port == 0) goto bad; 313 } 314 else if (strcmp(*argv,"-connect") == 0) 315 { 316 if (--argc < 1) goto bad; 317 if (!extract_host_port(*(++argv),&host,NULL,&port)) 318 goto bad; 319 } 320 else if (strcmp(*argv,"-verify") == 0) 321 { 322 verify=SSL_VERIFY_PEER; 323 if (--argc < 1) goto bad; 324 verify_depth=atoi(*(++argv)); 325 BIO_printf(bio_err,"verify depth is %d\n",verify_depth); 326 } 327 else if (strcmp(*argv,"-cert") == 0) 328 { 329 if (--argc < 1) goto bad; 330 cert_file= *(++argv); 331 } 332 else if (strcmp(*argv,"-crl_check") == 0) 333 vflags |= X509_V_FLAG_CRL_CHECK; 334 else if (strcmp(*argv,"-crl_check_all") == 0) 335 vflags |= X509_V_FLAG_CRL_CHECK|X509_V_FLAG_CRL_CHECK_ALL; 336 else if (strcmp(*argv,"-prexit") == 0) 337 prexit=1; 338 else if (strcmp(*argv,"-crlf") == 0) 339 crlf=1; 340 else if (strcmp(*argv,"-quiet") == 0) 341 { 342 c_quiet=1; 343 c_ign_eof=1; 344 } 345 else if (strcmp(*argv,"-ign_eof") == 0) 346 c_ign_eof=1; 347 else if (strcmp(*argv,"-pause") == 0) 348 c_Pause=1; 349 else if (strcmp(*argv,"-debug") == 0) 350 c_debug=1; 351 else if (strcmp(*argv,"-msg") == 0) 352 c_msg=1; 353 else if (strcmp(*argv,"-showcerts") == 0) 354 c_showcerts=1; 355 else if (strcmp(*argv,"-nbio_test") == 0) 356 nbio_test=1; 357 else if (strcmp(*argv,"-state") == 0) 358 state=1; 359 #ifndef OPENSSL_NO_SSL2 360 else if (strcmp(*argv,"-ssl2") == 0) 361 meth=SSLv2_client_method(); 362 #endif 363 #ifndef OPENSSL_NO_SSL3 364 else if (strcmp(*argv,"-ssl3") == 0) 365 meth=SSLv3_client_method(); 366 #endif 367 #ifndef OPENSSL_NO_TLS1 368 else if (strcmp(*argv,"-tls1") == 0) 369 meth=TLSv1_client_method(); 370 #endif 371 else if (strcmp(*argv,"-bugs") == 0) 372 bugs=1; 373 else if (strcmp(*argv,"-key") == 0) 374 { 375 if (--argc < 1) goto bad; 376 key_file= *(++argv); 377 } 378 else if (strcmp(*argv,"-reconnect") == 0) 379 { 380 reconnect=5; 381 } 382 else if (strcmp(*argv,"-CApath") == 0) 383 { 384 if (--argc < 1) goto bad; 385 CApath= *(++argv); 386 } 387 else if (strcmp(*argv,"-CAfile") == 0) 388 { 389 if (--argc < 1) goto bad; 390 CAfile= *(++argv); 391 } 392 else if (strcmp(*argv,"-no_tls1") == 0) 393 off|=SSL_OP_NO_TLSv1; 394 else if (strcmp(*argv,"-no_ssl3") == 0) 395 off|=SSL_OP_NO_SSLv3; 396 else if (strcmp(*argv,"-no_ssl2") == 0) 397 off|=SSL_OP_NO_SSLv2; 398 else if (strcmp(*argv,"-serverpref") == 0) 399 off|=SSL_OP_CIPHER_SERVER_PREFERENCE; 400 else if (strcmp(*argv,"-cipher") == 0) 401 { 402 if (--argc < 1) goto bad; 403 cipher= *(++argv); 404 } 405 #ifdef FIONBIO 406 else if (strcmp(*argv,"-nbio") == 0) 407 { c_nbio=1; } 408 #endif 409 else if (strcmp(*argv,"-starttls") == 0) 410 { 411 if (--argc < 1) goto bad; 412 ++argv; 413 if (strcmp(*argv,"smtp") == 0) 414 smtp_starttls = 1; 415 else 416 goto bad; 417 } 418 else if (strcmp(*argv,"-engine") == 0) 419 { 420 if (--argc < 1) goto bad; 421 engine_id = *(++argv); 422 } 423 else if (strcmp(*argv,"-rand") == 0) 424 { 425 if (--argc < 1) goto bad; 426 inrand= *(++argv); 427 } 428 else 429 { 430 BIO_printf(bio_err,"unknown option %s\n",*argv); 431 badop=1; 432 break; 433 } 434 argc--; 435 argv++; 436 } 437 if (badop) 438 { 439 bad: 440 sc_usage(); 441 goto end; 442 } 443 444 OpenSSL_add_ssl_algorithms(); 445 SSL_load_error_strings(); 446 447 e = setup_engine(bio_err, engine_id, 1); 448 449 if (!app_RAND_load_file(NULL, bio_err, 1) && inrand == NULL 450 && !RAND_status()) 451 { 452 BIO_printf(bio_err,"warning, not much extra random data, consider using the -rand option\n"); 453 } 454 if (inrand != NULL) 455 BIO_printf(bio_err,"%ld semi-random bytes loaded\n", 456 app_RAND_load_files(inrand)); 457 458 if (bio_c_out == NULL) 459 { 460 if (c_quiet && !c_debug && !c_msg) 461 { 462 bio_c_out=BIO_new(BIO_s_null()); 463 } 464 else 465 { 466 if (bio_c_out == NULL) 467 bio_c_out=BIO_new_fp(stdout,BIO_NOCLOSE); 468 } 469 } 470 471 ctx=SSL_CTX_new(meth); 472 if (ctx == NULL) 473 { 474 ERR_print_errors(bio_err); 475 goto end; 476 } 477 478 if (bugs) 479 SSL_CTX_set_options(ctx,SSL_OP_ALL|off); 480 else 481 SSL_CTX_set_options(ctx,off); 482 483 if (state) SSL_CTX_set_info_callback(ctx,apps_ssl_info_callback); 484 if (cipher != NULL) 485 if(!SSL_CTX_set_cipher_list(ctx,cipher)) { 486 BIO_printf(bio_err,"error setting cipher list\n"); 487 ERR_print_errors(bio_err); 488 goto end; 489 } 490 #if 0 491 else 492 SSL_CTX_set_cipher_list(ctx,getenv("SSL_CIPHER")); 493 #endif 494 495 SSL_CTX_set_verify(ctx,verify,verify_callback); 496 if (!set_cert_stuff(ctx,cert_file,key_file)) 497 goto end; 498 499 if ((!SSL_CTX_load_verify_locations(ctx,CAfile,CApath)) || 500 (!SSL_CTX_set_default_verify_paths(ctx))) 501 { 502 /* BIO_printf(bio_err,"error setting default verify locations\n"); */ 503 ERR_print_errors(bio_err); 504 /* goto end; */ 505 } 506 507 store = SSL_CTX_get_cert_store(ctx); 508 X509_STORE_set_flags(store, vflags); 509 510 con=SSL_new(ctx); 511 #ifndef OPENSSL_NO_KRB5 512 if (con && (con->kssl_ctx = kssl_ctx_new()) != NULL) 513 { 514 kssl_ctx_setstring(con->kssl_ctx, KSSL_SERVER, host); 515 } 516 #endif /* OPENSSL_NO_KRB5 */ 517 /* SSL_set_cipher_list(con,"RC4-MD5"); */ 518 519 re_start: 520 521 if (init_client(&s,host,port) == 0) 522 { 523 BIO_printf(bio_err,"connect:errno=%d\n",get_last_socket_error()); 524 SHUTDOWN(s); 525 goto end; 526 } 527 BIO_printf(bio_c_out,"CONNECTED(%08X)\n",s); 528 529 #ifdef FIONBIO 530 if (c_nbio) 531 { 532 unsigned long l=1; 533 BIO_printf(bio_c_out,"turning on non blocking io\n"); 534 if (BIO_socket_ioctl(s,FIONBIO,&l) < 0) 535 { 536 ERR_print_errors(bio_err); 537 goto end; 538 } 539 } 540 #endif 541 if (c_Pause & 0x01) con->debug=1; 542 sbio=BIO_new_socket(s,BIO_NOCLOSE); 543 544 if (nbio_test) 545 { 546 BIO *test; 547 548 test=BIO_new(BIO_f_nbio_test()); 549 sbio=BIO_push(test,sbio); 550 } 551 552 if (c_debug) 553 { 554 con->debug=1; 555 BIO_set_callback(sbio,bio_dump_cb); 556 BIO_set_callback_arg(sbio,bio_c_out); 557 } 558 if (c_msg) 559 { 560 SSL_set_msg_callback(con, msg_cb); 561 SSL_set_msg_callback_arg(con, bio_c_out); 562 } 563 564 SSL_set_bio(con,sbio,sbio); 565 SSL_set_connect_state(con); 566 567 /* ok, lets connect */ 568 width=SSL_get_fd(con)+1; 569 570 read_tty=1; 571 write_tty=0; 572 tty_on=0; 573 read_ssl=1; 574 write_ssl=1; 575 576 cbuf_len=0; 577 cbuf_off=0; 578 sbuf_len=0; 579 sbuf_off=0; 580 581 /* This is an ugly hack that does a lot of assumptions */ 582 if (smtp_starttls) 583 { 584 BIO_read(sbio,mbuf,BUFSIZZ); 585 BIO_printf(sbio,"STARTTLS\r\n"); 586 BIO_read(sbio,sbuf,BUFSIZZ); 587 } 588 589 for (;;) 590 { 591 FD_ZERO(&readfds); 592 FD_ZERO(&writefds); 593 594 if (SSL_in_init(con) && !SSL_total_renegotiations(con)) 595 { 596 in_init=1; 597 tty_on=0; 598 } 599 else 600 { 601 tty_on=1; 602 if (in_init) 603 { 604 in_init=0; 605 print_stuff(bio_c_out,con,full_log); 606 if (full_log > 0) full_log--; 607 608 if (smtp_starttls) 609 { 610 BIO_printf(bio_err,"%s",mbuf); 611 /* We don't need to know any more */ 612 smtp_starttls = 0; 613 } 614 615 if (reconnect) 616 { 617 reconnect--; 618 BIO_printf(bio_c_out,"drop connection and then reconnect\n"); 619 SSL_shutdown(con); 620 SSL_set_connect_state(con); 621 SHUTDOWN(SSL_get_fd(con)); 622 goto re_start; 623 } 624 } 625 } 626 627 ssl_pending = read_ssl && SSL_pending(con); 628 629 if (!ssl_pending) 630 { 631 #ifndef OPENSSL_SYS_WINDOWS 632 if (tty_on) 633 { 634 if (read_tty) FD_SET(fileno(stdin),&readfds); 635 if (write_tty) FD_SET(fileno(stdout),&writefds); 636 } 637 if (read_ssl) 638 FD_SET(SSL_get_fd(con),&readfds); 639 if (write_ssl) 640 FD_SET(SSL_get_fd(con),&writefds); 641 #else 642 if(!tty_on || !write_tty) { 643 if (read_ssl) 644 FD_SET(SSL_get_fd(con),&readfds); 645 if (write_ssl) 646 FD_SET(SSL_get_fd(con),&writefds); 647 } 648 #endif 649 /* printf("mode tty(%d %d%d) ssl(%d%d)\n", 650 tty_on,read_tty,write_tty,read_ssl,write_ssl);*/ 651 652 /* Note: under VMS with SOCKETSHR the second parameter 653 * is currently of type (int *) whereas under other 654 * systems it is (void *) if you don't have a cast it 655 * will choke the compiler: if you do have a cast then 656 * you can either go for (int *) or (void *). 657 */ 658 #ifdef OPENSSL_SYS_WINDOWS 659 /* Under Windows we make the assumption that we can 660 * always write to the tty: therefore if we need to 661 * write to the tty we just fall through. Otherwise 662 * we timeout the select every second and see if there 663 * are any keypresses. Note: this is a hack, in a proper 664 * Windows application we wouldn't do this. 665 */ 666 i=0; 667 if(!write_tty) { 668 if(read_tty) { 669 tv.tv_sec = 1; 670 tv.tv_usec = 0; 671 i=select(width,(void *)&readfds,(void *)&writefds, 672 NULL,&tv); 673 #ifdef OPENSSL_SYS_WINCE 674 if(!i && (!_kbhit() || !read_tty) ) continue; 675 #else 676 if(!i && (!((_kbhit()) || (WAIT_OBJECT_0 == WaitForSingleObject(GetStdHandle(STD_INPUT_HANDLE), 0))) || !read_tty) ) continue; 677 #endif 678 } else i=select(width,(void *)&readfds,(void *)&writefds, 679 NULL,NULL); 680 } 681 #else 682 i=select(width,(void *)&readfds,(void *)&writefds, 683 NULL,NULL); 684 #endif 685 if ( i < 0) 686 { 687 BIO_printf(bio_err,"bad select %d\n", 688 get_last_socket_error()); 689 goto shut; 690 /* goto end; */ 691 } 692 } 693 694 if (!ssl_pending && FD_ISSET(SSL_get_fd(con),&writefds)) 695 { 696 k=SSL_write(con,&(cbuf[cbuf_off]), 697 (unsigned int)cbuf_len); 698 switch (SSL_get_error(con,k)) 699 { 700 case SSL_ERROR_NONE: 701 cbuf_off+=k; 702 cbuf_len-=k; 703 if (k <= 0) goto end; 704 /* we have done a write(con,NULL,0); */ 705 if (cbuf_len <= 0) 706 { 707 read_tty=1; 708 write_ssl=0; 709 } 710 else /* if (cbuf_len > 0) */ 711 { 712 read_tty=0; 713 write_ssl=1; 714 } 715 break; 716 case SSL_ERROR_WANT_WRITE: 717 BIO_printf(bio_c_out,"write W BLOCK\n"); 718 write_ssl=1; 719 read_tty=0; 720 break; 721 case SSL_ERROR_WANT_READ: 722 BIO_printf(bio_c_out,"write R BLOCK\n"); 723 write_tty=0; 724 read_ssl=1; 725 write_ssl=0; 726 break; 727 case SSL_ERROR_WANT_X509_LOOKUP: 728 BIO_printf(bio_c_out,"write X BLOCK\n"); 729 break; 730 case SSL_ERROR_ZERO_RETURN: 731 if (cbuf_len != 0) 732 { 733 BIO_printf(bio_c_out,"shutdown\n"); 734 goto shut; 735 } 736 else 737 { 738 read_tty=1; 739 write_ssl=0; 740 break; 741 } 742 743 case SSL_ERROR_SYSCALL: 744 if ((k != 0) || (cbuf_len != 0)) 745 { 746 BIO_printf(bio_err,"write:errno=%d\n", 747 get_last_socket_error()); 748 goto shut; 749 } 750 else 751 { 752 read_tty=1; 753 write_ssl=0; 754 } 755 break; 756 case SSL_ERROR_SSL: 757 ERR_print_errors(bio_err); 758 goto shut; 759 } 760 } 761 #if defined(OPENSSL_SYS_WINDOWS) || defined(OPENSSL_SYS_MSDOS) 762 /* Assume Windows/DOS can always write */ 763 else if (!ssl_pending && write_tty) 764 #else 765 else if (!ssl_pending && FD_ISSET(fileno(stdout),&writefds)) 766 #endif 767 { 768 #ifdef CHARSET_EBCDIC 769 ascii2ebcdic(&(sbuf[sbuf_off]),&(sbuf[sbuf_off]),sbuf_len); 770 #endif 771 i=write(fileno(stdout),&(sbuf[sbuf_off]),sbuf_len); 772 773 if (i <= 0) 774 { 775 BIO_printf(bio_c_out,"DONE\n"); 776 goto shut; 777 /* goto end; */ 778 } 779 780 sbuf_len-=i;; 781 sbuf_off+=i; 782 if (sbuf_len <= 0) 783 { 784 read_ssl=1; 785 write_tty=0; 786 } 787 } 788 else if (ssl_pending || FD_ISSET(SSL_get_fd(con),&readfds)) 789 { 790 #ifdef RENEG 791 { static int iiii; if (++iiii == 52) { SSL_renegotiate(con); iiii=0; } } 792 #endif 793 #if 1 794 k=SSL_read(con,sbuf,1024 /* BUFSIZZ */ ); 795 #else 796 /* Demo for pending and peek :-) */ 797 k=SSL_read(con,sbuf,16); 798 { char zbuf[10240]; 799 printf("read=%d pending=%d peek=%d\n",k,SSL_pending(con),SSL_peek(con,zbuf,10240)); 800 } 801 #endif 802 803 switch (SSL_get_error(con,k)) 804 { 805 case SSL_ERROR_NONE: 806 if (k <= 0) 807 goto end; 808 sbuf_off=0; 809 sbuf_len=k; 810 811 read_ssl=0; 812 write_tty=1; 813 break; 814 case SSL_ERROR_WANT_WRITE: 815 BIO_printf(bio_c_out,"read W BLOCK\n"); 816 write_ssl=1; 817 read_tty=0; 818 break; 819 case SSL_ERROR_WANT_READ: 820 BIO_printf(bio_c_out,"read R BLOCK\n"); 821 write_tty=0; 822 read_ssl=1; 823 if ((read_tty == 0) && (write_ssl == 0)) 824 write_ssl=1; 825 break; 826 case SSL_ERROR_WANT_X509_LOOKUP: 827 BIO_printf(bio_c_out,"read X BLOCK\n"); 828 break; 829 case SSL_ERROR_SYSCALL: 830 BIO_printf(bio_err,"read:errno=%d\n",get_last_socket_error()); 831 goto shut; 832 case SSL_ERROR_ZERO_RETURN: 833 BIO_printf(bio_c_out,"closed\n"); 834 goto shut; 835 case SSL_ERROR_SSL: 836 ERR_print_errors(bio_err); 837 goto shut; 838 /* break; */ 839 } 840 } 841 842 #ifdef OPENSSL_SYS_WINDOWS 843 #ifdef OPENSSL_SYS_WINCE 844 else if (_kbhit()) 845 #else 846 else if ((_kbhit()) || (WAIT_OBJECT_0 == WaitForSingleObject(GetStdHandle(STD_INPUT_HANDLE), 0))) 847 #endif 848 #else 849 else if (FD_ISSET(fileno(stdin),&readfds)) 850 #endif 851 { 852 if (crlf) 853 { 854 int j, lf_num; 855 856 i=read(fileno(stdin),cbuf,BUFSIZZ/2); 857 lf_num = 0; 858 /* both loops are skipped when i <= 0 */ 859 for (j = 0; j < i; j++) 860 if (cbuf[j] == '\n') 861 lf_num++; 862 for (j = i-1; j >= 0; j--) 863 { 864 cbuf[j+lf_num] = cbuf[j]; 865 if (cbuf[j] == '\n') 866 { 867 lf_num--; 868 i++; 869 cbuf[j+lf_num] = '\r'; 870 } 871 } 872 assert(lf_num == 0); 873 } 874 else 875 i=read(fileno(stdin),cbuf,BUFSIZZ); 876 877 if ((!c_ign_eof) && ((i <= 0) || (cbuf[0] == 'Q'))) 878 { 879 BIO_printf(bio_err,"DONE\n"); 880 goto shut; 881 } 882 883 if ((!c_ign_eof) && (cbuf[0] == 'R')) 884 { 885 BIO_printf(bio_err,"RENEGOTIATING\n"); 886 SSL_renegotiate(con); 887 cbuf_len=0; 888 } 889 else 890 { 891 cbuf_len=i; 892 cbuf_off=0; 893 #ifdef CHARSET_EBCDIC 894 ebcdic2ascii(cbuf, cbuf, i); 895 #endif 896 } 897 898 write_ssl=1; 899 read_tty=0; 900 } 901 } 902 shut: 903 SSL_shutdown(con); 904 SHUTDOWN(SSL_get_fd(con)); 905 ret=0; 906 end: 907 if(prexit) print_stuff(bio_c_out,con,1); 908 if (con != NULL) SSL_free(con); 909 if (con2 != NULL) SSL_free(con2); 910 if (ctx != NULL) SSL_CTX_free(ctx); 911 if (cbuf != NULL) { OPENSSL_cleanse(cbuf,BUFSIZZ); OPENSSL_free(cbuf); } 912 if (sbuf != NULL) { OPENSSL_cleanse(sbuf,BUFSIZZ); OPENSSL_free(sbuf); } 913 if (mbuf != NULL) { OPENSSL_cleanse(mbuf,BUFSIZZ); OPENSSL_free(mbuf); } 914 if (bio_c_out != NULL) 915 { 916 BIO_free(bio_c_out); 917 bio_c_out=NULL; 918 } 919 apps_shutdown(); 920 OPENSSL_EXIT(ret); 921 } 922 923 924 static void print_stuff(BIO *bio, SSL *s, int full) 925 { 926 X509 *peer=NULL; 927 char *p; 928 static char *space=" "; 929 char buf[BUFSIZ]; 930 STACK_OF(X509) *sk; 931 STACK_OF(X509_NAME) *sk2; 932 SSL_CIPHER *c; 933 X509_NAME *xn; 934 int j,i; 935 936 if (full) 937 { 938 int got_a_chain = 0; 939 940 sk=SSL_get_peer_cert_chain(s); 941 if (sk != NULL) 942 { 943 got_a_chain = 1; /* we don't have it for SSL2 (yet) */ 944 945 BIO_printf(bio,"---\nCertificate chain\n"); 946 for (i=0; i<sk_X509_num(sk); i++) 947 { 948 X509_NAME_oneline(X509_get_subject_name( 949 sk_X509_value(sk,i)),buf,sizeof buf); 950 BIO_printf(bio,"%2d s:%s\n",i,buf); 951 X509_NAME_oneline(X509_get_issuer_name( 952 sk_X509_value(sk,i)),buf,sizeof buf); 953 BIO_printf(bio," i:%s\n",buf); 954 if (c_showcerts) 955 PEM_write_bio_X509(bio,sk_X509_value(sk,i)); 956 } 957 } 958 959 BIO_printf(bio,"---\n"); 960 peer=SSL_get_peer_certificate(s); 961 if (peer != NULL) 962 { 963 BIO_printf(bio,"Server certificate\n"); 964 if (!(c_showcerts && got_a_chain)) /* Redundant if we showed the whole chain */ 965 PEM_write_bio_X509(bio,peer); 966 X509_NAME_oneline(X509_get_subject_name(peer), 967 buf,sizeof buf); 968 BIO_printf(bio,"subject=%s\n",buf); 969 X509_NAME_oneline(X509_get_issuer_name(peer), 970 buf,sizeof buf); 971 BIO_printf(bio,"issuer=%s\n",buf); 972 } 973 else 974 BIO_printf(bio,"no peer certificate available\n"); 975 976 sk2=SSL_get_client_CA_list(s); 977 if ((sk2 != NULL) && (sk_X509_NAME_num(sk2) > 0)) 978 { 979 BIO_printf(bio,"---\nAcceptable client certificate CA names\n"); 980 for (i=0; i<sk_X509_NAME_num(sk2); i++) 981 { 982 xn=sk_X509_NAME_value(sk2,i); 983 X509_NAME_oneline(xn,buf,sizeof(buf)); 984 BIO_write(bio,buf,strlen(buf)); 985 BIO_write(bio,"\n",1); 986 } 987 } 988 else 989 { 990 BIO_printf(bio,"---\nNo client certificate CA names sent\n"); 991 } 992 p=SSL_get_shared_ciphers(s,buf,sizeof buf); 993 if (p != NULL) 994 { 995 /* This works only for SSL 2. In later protocol 996 * versions, the client does not know what other 997 * ciphers (in addition to the one to be used 998 * in the current connection) the server supports. */ 999 1000 BIO_printf(bio,"---\nCiphers common between both SSL endpoints:\n"); 1001 j=i=0; 1002 while (*p) 1003 { 1004 if (*p == ':') 1005 { 1006 BIO_write(bio,space,15-j%25); 1007 i++; 1008 j=0; 1009 BIO_write(bio,((i%3)?" ":"\n"),1); 1010 } 1011 else 1012 { 1013 BIO_write(bio,p,1); 1014 j++; 1015 } 1016 p++; 1017 } 1018 BIO_write(bio,"\n",1); 1019 } 1020 1021 BIO_printf(bio,"---\nSSL handshake has read %ld bytes and written %ld bytes\n", 1022 BIO_number_read(SSL_get_rbio(s)), 1023 BIO_number_written(SSL_get_wbio(s))); 1024 } 1025 BIO_printf(bio,((s->hit)?"---\nReused, ":"---\nNew, ")); 1026 c=SSL_get_current_cipher(s); 1027 BIO_printf(bio,"%s, Cipher is %s\n", 1028 SSL_CIPHER_get_version(c), 1029 SSL_CIPHER_get_name(c)); 1030 if (peer != NULL) { 1031 EVP_PKEY *pktmp; 1032 pktmp = X509_get_pubkey(peer); 1033 BIO_printf(bio,"Server public key is %d bit\n", 1034 EVP_PKEY_bits(pktmp)); 1035 EVP_PKEY_free(pktmp); 1036 } 1037 SSL_SESSION_print(bio,SSL_get_session(s)); 1038 BIO_printf(bio,"---\n"); 1039 if (peer != NULL) 1040 X509_free(peer); 1041 /* flush, or debugging output gets mixed with http response */ 1042 BIO_flush(bio); 1043 } 1044 1045