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BIO_write and BIO_read could, in theory, return -2.
[thirdparty/openssl.git] / ssl / ssltest.c
1 /* ssl/ssltest.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 #include <stdio.h>
60 #include <stdlib.h>
61 #include <string.h>
62 #include <errno.h>
63 #include <limits.h>
64
65 #include "openssl/e_os.h"
66
67 #include <openssl/bio.h>
68 #include <openssl/crypto.h>
69 #include <openssl/x509.h>
70 #include <openssl/ssl.h>
71 #include <openssl/err.h>
72 #ifdef WINDOWS
73 #include "../crypto/bio/bss_file.c"
74 #endif
75
76 #if defined(NO_RSA) && !defined(NO_SSL2)
77 #define NO_SSL2
78 #endif
79
80 #ifdef VMS
81 # define TEST_SERVER_CERT "SYS$DISK:[-.APPS]SERVER.PEM"
82 # define TEST_CLIENT_CERT "SYS$DISK:[-.APPS]CLIENT.PEM"
83 #else
84 # define TEST_SERVER_CERT "../apps/server.pem"
85 # define TEST_CLIENT_CERT "../apps/client.pem"
86 #endif
87
88 int MS_CALLBACK verify_callback(int ok, X509_STORE_CTX *ctx);
89 #ifndef NO_RSA
90 static RSA MS_CALLBACK *tmp_rsa_cb(SSL *s, int is_export,int keylength);
91 #endif
92 #ifndef NO_DH
93 static DH *get_dh512(void);
94 #endif
95 BIO *bio_err=NULL;
96 BIO *bio_stdout=NULL;
97
98 static char *cipher=NULL;
99 int verbose=0;
100 int debug=0;
101 #if 0
102 /* Not used yet. */
103 #ifdef FIONBIO
104 static int s_nbio=0;
105 #endif
106 #endif
107
108
109 int doit_biopair(SSL *s_ssl,SSL *c_ssl,long bytes);
110 int doit(SSL *s_ssl,SSL *c_ssl,long bytes);
111 static void sv_usage(void)
112 {
113 fprintf(stderr,"usage: ssltest [args ...]\n");
114 fprintf(stderr,"\n");
115 fprintf(stderr," -server_auth - check server certificate\n");
116 fprintf(stderr," -client_auth - do client authentication\n");
117 fprintf(stderr," -v - more output\n");
118 fprintf(stderr," -d - debug output\n");
119 fprintf(stderr," -reuse - use session-id reuse\n");
120 fprintf(stderr," -num <val> - number of connections to perform\n");
121 fprintf(stderr," -bytes <val> - number of bytes to swap between client/server\n");
122 #if !defined NO_DH && !defined NO_DSA
123 fprintf(stderr," -dhe1024 - generate 1024 bit key for DHE\n");
124 #endif
125 #ifndef NO_SSL2
126 fprintf(stderr," -ssl2 - use SSLv2\n");
127 #endif
128 #ifndef NO_SSL3
129 fprintf(stderr," -ssl3 - use SSLv3\n");
130 #endif
131 #ifndef NO_TLS1
132 fprintf(stderr," -tls1 - use TLSv1\n");
133 #endif
134 fprintf(stderr," -CApath arg - PEM format directory of CA's\n");
135 fprintf(stderr," -CAfile arg - PEM format file of CA's\n");
136 fprintf(stderr," -cert arg - Certificate file\n");
137 fprintf(stderr," -s_cert arg - Just the server certificate file\n");
138 fprintf(stderr," -c_cert arg - Just the client certificate file\n");
139 fprintf(stderr," -cipher arg - The cipher list\n");
140 fprintf(stderr," -bio_pair - Use BIO pairs\n");
141 fprintf(stderr," -f - Test even cases that can't work\n");
142 }
143
144 int main(int argc, char *argv[])
145 {
146 char *CApath=NULL,*CAfile=NULL;
147 int badop=0;
148 int bio_pair=0;
149 int force=0;
150 int tls1=0,ssl2=0,ssl3=0,ret=1;
151 int client_auth=0;
152 int server_auth=0,i;
153 char *server_cert=TEST_SERVER_CERT;
154 char *client_cert=TEST_CLIENT_CERT;
155 SSL_CTX *s_ctx=NULL;
156 SSL_CTX *c_ctx=NULL;
157 SSL_METHOD *meth=NULL;
158 SSL *c_ssl,*s_ssl;
159 int number=1,reuse=0;
160 long bytes=1L;
161 SSL_CIPHER *ciph;
162 int dhe1024 = 0;
163 #ifndef NO_DH
164 DH *dh;
165 #endif
166
167 bio_err=BIO_new_fp(stderr,BIO_NOCLOSE);
168 bio_stdout=BIO_new_fp(stdout,BIO_NOCLOSE);
169
170 CRYPTO_mem_ctrl(CRYPTO_MEM_CHECK_ON);
171
172 argc--;
173 argv++;
174
175 while (argc >= 1)
176 {
177 if (strcmp(*argv,"-server_auth") == 0)
178 server_auth=1;
179 else if (strcmp(*argv,"-client_auth") == 0)
180 client_auth=1;
181 else if (strcmp(*argv,"-v") == 0)
182 verbose=1;
183 else if (strcmp(*argv,"-d") == 0)
184 debug=1;
185 else if (strcmp(*argv,"-reuse") == 0)
186 reuse=1;
187 else if (strcmp(*argv,"-dhe1024") == 0)
188 dhe1024=1;
189 else if (strcmp(*argv,"-ssl2") == 0)
190 ssl2=1;
191 else if (strcmp(*argv,"-tls1") == 0)
192 tls1=1;
193 else if (strcmp(*argv,"-ssl3") == 0)
194 ssl3=1;
195 else if (strncmp(*argv,"-num",4) == 0)
196 {
197 if (--argc < 1) goto bad;
198 number= atoi(*(++argv));
199 if (number == 0) number=1;
200 }
201 else if (strcmp(*argv,"-bytes") == 0)
202 {
203 if (--argc < 1) goto bad;
204 bytes= atol(*(++argv));
205 if (bytes == 0L) bytes=1L;
206 i=strlen(argv[0]);
207 if (argv[0][i-1] == 'k') bytes*=1024L;
208 if (argv[0][i-1] == 'm') bytes*=1024L*1024L;
209 }
210 else if (strcmp(*argv,"-cert") == 0)
211 {
212 if (--argc < 1) goto bad;
213 server_cert= *(++argv);
214 }
215 else if (strcmp(*argv,"-s_cert") == 0)
216 {
217 if (--argc < 1) goto bad;
218 server_cert= *(++argv);
219 }
220 else if (strcmp(*argv,"-c_cert") == 0)
221 {
222 if (--argc < 1) goto bad;
223 client_cert= *(++argv);
224 }
225 else if (strcmp(*argv,"-cipher") == 0)
226 {
227 if (--argc < 1) goto bad;
228 cipher= *(++argv);
229 }
230 else if (strcmp(*argv,"-CApath") == 0)
231 {
232 if (--argc < 1) goto bad;
233 CApath= *(++argv);
234 }
235 else if (strcmp(*argv,"-CAfile") == 0)
236 {
237 if (--argc < 1) goto bad;
238 CAfile= *(++argv);
239 }
240 else if (strcmp(*argv,"-bio_pair") == 0)
241 {
242 bio_pair = 1;
243 }
244 else if (strcmp(*argv,"-f") == 0)
245 {
246 force = 1;
247 }
248 else
249 {
250 fprintf(stderr,"unknown option %s\n",*argv);
251 badop=1;
252 break;
253 }
254 argc--;
255 argv++;
256 }
257 if (badop)
258 {
259 bad:
260 sv_usage();
261 goto end;
262 }
263
264 if (!ssl2 && !ssl3 && !tls1 && number > 1 && !reuse && !force)
265 {
266 fprintf(stderr, "This case cannot work. Use -f switch to perform "
267 "the test anyway\n"
268 "(and -d to see what happens, "
269 "and -bio_pair to really make it happen :-)\n"
270 "or add one of -ssl2, -ssl3, -tls1, -reuse to "
271 "avoid protocol mismatch.\n");
272 exit(1);
273 }
274
275 /* if (cipher == NULL) cipher=getenv("SSL_CIPHER"); */
276
277 SSL_library_init();
278 SSL_load_error_strings();
279
280 #if !defined(NO_SSL2) && !defined(NO_SSL3)
281 if (ssl2)
282 meth=SSLv2_method();
283 else
284 if (tls1)
285 meth=TLSv1_method();
286 else
287 if (ssl3)
288 meth=SSLv3_method();
289 else
290 meth=SSLv23_method();
291 #else
292 #ifdef NO_SSL2
293 meth=SSLv3_method();
294 #else
295 meth=SSLv2_method();
296 #endif
297 #endif
298
299 c_ctx=SSL_CTX_new(meth);
300 s_ctx=SSL_CTX_new(meth);
301 if ((c_ctx == NULL) || (s_ctx == NULL))
302 {
303 ERR_print_errors(bio_err);
304 goto end;
305 }
306
307 if (cipher != NULL)
308 {
309 SSL_CTX_set_cipher_list(c_ctx,cipher);
310 SSL_CTX_set_cipher_list(s_ctx,cipher);
311 }
312
313 #ifndef NO_DH
314 # ifndef NO_DSA
315 if (dhe1024)
316 {
317 DSA *dsa;
318 unsigned char seed[20];
319
320 if (verbose)
321 {
322 fprintf(stdout, "Creating 1024 bit DHE parameters ...");
323 fflush(stdout);
324 }
325
326 memcpy(seed, "Random String no. 12", 20);
327 dsa = DSA_generate_parameters(1024, seed, 20, NULL, NULL, 0, NULL);
328 dh = DSA_dup_DH(dsa);
329 DSA_free(dsa);
330 /* important: SSL_OP_SINGLE_DH_USE to avoid small subgroup attacks */
331 SSL_CTX_set_options(s_ctx, SSL_OP_SINGLE_DH_USE);
332
333 if (verbose)
334 fprintf(stdout, " done\n");
335 }
336 else
337 # endif
338 dh=get_dh512();
339 SSL_CTX_set_tmp_dh(s_ctx,dh);
340 DH_free(dh);
341 #endif
342
343 #ifndef NO_RSA
344 SSL_CTX_set_tmp_rsa_callback(s_ctx,tmp_rsa_cb);
345 #endif
346
347 if (!SSL_CTX_use_certificate_file(s_ctx,server_cert,SSL_FILETYPE_PEM))
348 {
349 ERR_print_errors(bio_err);
350 }
351 else if (!SSL_CTX_use_PrivateKey_file(s_ctx,server_cert,
352 SSL_FILETYPE_PEM))
353 {
354 ERR_print_errors(bio_err);
355 goto end;
356 }
357
358 if (client_auth)
359 {
360 SSL_CTX_use_certificate_file(c_ctx,client_cert,
361 SSL_FILETYPE_PEM);
362 SSL_CTX_use_PrivateKey_file(c_ctx,client_cert,
363 SSL_FILETYPE_PEM);
364 }
365
366 if ( (!SSL_CTX_load_verify_locations(s_ctx,CAfile,CApath)) ||
367 (!SSL_CTX_set_default_verify_paths(s_ctx)) ||
368 (!SSL_CTX_load_verify_locations(c_ctx,CAfile,CApath)) ||
369 (!SSL_CTX_set_default_verify_paths(c_ctx)))
370 {
371 /* fprintf(stderr,"SSL_load_verify_locations\n"); */
372 ERR_print_errors(bio_err);
373 /* goto end; */
374 }
375
376 if (client_auth)
377 {
378 fprintf(stderr,"client authentication\n");
379 SSL_CTX_set_verify(s_ctx,
380 SSL_VERIFY_PEER|SSL_VERIFY_FAIL_IF_NO_PEER_CERT,
381 verify_callback);
382 }
383 if (server_auth)
384 {
385 fprintf(stderr,"server authentication\n");
386 SSL_CTX_set_verify(c_ctx,SSL_VERIFY_PEER,
387 verify_callback);
388 }
389
390 c_ssl=SSL_new(c_ctx);
391 s_ssl=SSL_new(s_ctx);
392
393 for (i=0; i<number; i++)
394 {
395 if (!reuse) SSL_set_session(c_ssl,NULL);
396 if (bio_pair)
397 ret=doit_biopair(s_ssl,c_ssl,bytes);
398 else
399 ret=doit(s_ssl,c_ssl,bytes);
400 }
401
402 if (!verbose)
403 {
404 ciph=SSL_get_current_cipher(c_ssl);
405 fprintf(stdout,"Protocol %s, cipher %s, %s\n",
406 SSL_get_version(c_ssl),
407 SSL_CIPHER_get_version(ciph),
408 SSL_CIPHER_get_name(ciph));
409 }
410 if ((number > 1) || (bytes > 1L))
411 printf("%d handshakes of %ld bytes done\n",number,bytes);
412
413 SSL_free(s_ssl);
414 SSL_free(c_ssl);
415
416 end:
417 if (s_ctx != NULL) SSL_CTX_free(s_ctx);
418 if (c_ctx != NULL) SSL_CTX_free(c_ctx);
419
420 if (bio_stdout != NULL) BIO_free(bio_stdout);
421
422 ERR_free_strings();
423 ERR_remove_state(0);
424 EVP_cleanup();
425 CRYPTO_mem_leaks(bio_err);
426 EXIT(ret);
427 }
428
429 int doit_biopair(SSL *s_ssl, SSL *c_ssl, long count)
430 {
431 long cw_num = count, cr_num = count, sw_num = count, sr_num = count;
432 BIO *s_ssl_bio = NULL, *c_ssl_bio = NULL;
433 BIO *server = NULL, *server_io = NULL, *client = NULL, *client_io = NULL;
434 SSL_CIPHER *ciph;
435 int ret = 1;
436
437 size_t bufsiz = 256; /* small buffer for testing */
438
439 if (!BIO_new_bio_pair(&server, bufsiz, &server_io, bufsiz))
440 goto err;
441 if (!BIO_new_bio_pair(&client, bufsiz, &client_io, bufsiz))
442 goto err;
443
444 s_ssl_bio = BIO_new(BIO_f_ssl());
445 if (!s_ssl_bio)
446 goto err;
447
448 c_ssl_bio = BIO_new(BIO_f_ssl());
449 if (!c_ssl_bio)
450 goto err;
451
452 SSL_set_connect_state(c_ssl);
453 SSL_set_bio(c_ssl, client, client);
454 (void)BIO_set_ssl(c_ssl_bio, c_ssl, BIO_NOCLOSE);
455
456 SSL_set_accept_state(s_ssl);
457 SSL_set_bio(s_ssl, server, server);
458 (void)BIO_set_ssl(s_ssl_bio, s_ssl, BIO_NOCLOSE);
459
460 do
461 {
462 /* c_ssl_bio: SSL filter BIO
463 *
464 * client: pseudo-I/O for SSL library
465 *
466 * client_io: client's SSL communication; usually to be
467 * relayed over some I/O facility, but in this
468 * test program, we're the server, too:
469 *
470 * server_io: server's SSL communication
471 *
472 * server: pseudo-I/O for SSL library
473 *
474 * s_ssl_bio: SSL filter BIO
475 *
476 * The client and the server each employ a "BIO pair":
477 * client + client_io, server + server_io.
478 * BIO pairs are symmetric. A BIO pair behaves similar
479 * to a non-blocking socketpair (but both endpoints must
480 * be handled by the same thread).
481 * [Here we could connect client and server to the ends
482 * of a single BIO pair, but then this code would be less
483 * suitable as an example for BIO pairs in general.]
484 *
485 * Useful functions for querying the state of BIO pair endpoints:
486 *
487 * BIO_ctrl_pending(bio) number of bytes we can read now
488 * BIO_ctrl_get_read_request(bio) number of bytes needed to fulfil
489 * other side's read attempt
490 * BIO_ctrl_get_write_gurantee(bio) number of bytes we can write now
491 *
492 * ..._read_request is never more than ..._write_guarantee;
493 * it depends on the application which one you should use.
494 */
495
496 /* We have non-blocking behaviour throughout this test program, but
497 * can be sure that there is *some* progress in each iteration; so
498 * we don't have to worry about ..._SHOULD_READ or ..._SHOULD_WRITE
499 * -- we just try everything in each iteration
500 */
501
502 {
503 /* CLIENT */
504
505 MS_STATIC char cbuf[1024*8];
506 int i, r;
507
508 if (debug)
509 if (SSL_in_init(c_ssl))
510 printf("client waiting in SSL_connect - %s\n",
511 SSL_state_string_long(c_ssl));
512
513 if (cw_num > 0)
514 {
515 /* Write to server. */
516
517 if (cw_num > (long)sizeof cbuf)
518 i = sizeof cbuf;
519 else
520 i = (int)cw_num;
521 r = BIO_write(c_ssl_bio, cbuf, i);
522 if (r < 0)
523 {
524 if (!BIO_should_retry(c_ssl_bio))
525 {
526 fprintf(stderr,"ERROR in CLIENT\n");
527 goto err;
528 }
529 /* BIO_should_retry(...) can just be ignored here.
530 * The library expects us to call BIO_write with
531 * the same arguments again, and that's what we will
532 * do in the next iteration. */
533 }
534 else if (r == 0)
535 {
536 fprintf(stderr,"SSL CLIENT STARTUP FAILED\n");
537 goto err;
538 }
539 else
540 {
541 if (debug)
542 printf("client wrote %d\n", r);
543 cw_num -= r;
544 }
545 }
546
547 if (cr_num > 0)
548 {
549 /* Read from server. */
550
551 r = BIO_read(c_ssl_bio, cbuf, sizeof(cbuf));
552 if (r < 0)
553 {
554 if (!BIO_should_retry(c_ssl_bio))
555 {
556 fprintf(stderr,"ERROR in CLIENT\n");
557 goto err;
558 }
559 /* Again, "BIO_should_retry" can be ignored. */
560 }
561 else if (r == 0)
562 {
563 fprintf(stderr,"SSL CLIENT STARTUP FAILED\n");
564 goto err;
565 }
566 else
567 {
568 if (debug)
569 printf("client read %d\n", r);
570 cr_num -= r;
571 }
572 }
573 }
574
575 {
576 /* SERVER */
577
578 MS_STATIC char sbuf[1024*8];
579 int i, r;
580
581 if (debug)
582 if (SSL_in_init(s_ssl))
583 printf("server waiting in SSL_accept - %s\n",
584 SSL_state_string_long(s_ssl));
585
586 if (sw_num > 0)
587 {
588 /* Write to client. */
589
590 if (sw_num > (long)sizeof sbuf)
591 i = sizeof sbuf;
592 else
593 i = (int)sw_num;
594 r = BIO_write(s_ssl_bio, sbuf, i);
595 if (r < 0)
596 {
597 if (!BIO_should_retry(s_ssl_bio))
598 {
599 fprintf(stderr,"ERROR in SERVER\n");
600 goto err;
601 }
602 /* Ignore "BIO_should_retry". */
603 }
604 else if (r == 0)
605 {
606 fprintf(stderr,"SSL SERVER STARTUP FAILED\n");
607 goto err;
608 }
609 else
610 {
611 if (debug)
612 printf("server wrote %d\n", r);
613 sw_num -= r;
614 }
615 }
616
617 if (sr_num > 0)
618 {
619 /* Read from client. */
620
621 r = BIO_read(s_ssl_bio, sbuf, sizeof(sbuf));
622 if (r < 0)
623 {
624 if (!BIO_should_retry(s_ssl_bio))
625 {
626 fprintf(stderr,"ERROR in SERVER\n");
627 goto err;
628 }
629 /* blah, blah */
630 }
631 else if (r == 0)
632 {
633 fprintf(stderr,"SSL SERVER STARTUP FAILED\n");
634 goto err;
635 }
636 else
637 {
638 if (debug)
639 printf("server read %d\n", r);
640 sr_num -= r;
641 }
642 }
643 }
644
645 {
646 /* "I/O" BETWEEN CLIENT AND SERVER. */
647
648 #define RELAYBUFSIZ 200
649 static char buf[RELAYBUFSIZ];
650
651 /* RELAYBUF is arbitrary. When writing data over some real
652 * network, use a buffer of the same size as in the BIO_pipe
653 * and make that size large (for reading from the network
654 * small buffers usually won't hurt).
655 * Here sizes differ for testing. */
656
657 size_t r1, r2;
658 size_t num;
659 int r;
660 static int prev_progress = 1;
661 int progress = 0;
662
663 /* client to server */
664 do
665 {
666 r1 = BIO_ctrl_pending(client_io);
667 r2 = BIO_ctrl_get_write_guarantee(server_io);
668
669 num = r1;
670 if (r2 < num)
671 num = r2;
672 if (num)
673 {
674 if (sizeof buf < num)
675 num = sizeof buf;
676 if (INT_MAX < num) /* yeah, right */
677 num = INT_MAX;
678
679 r = BIO_read(client_io, buf, (int)num);
680 if (r != (int)num) /* can't happen */
681 {
682 fprintf(stderr, "ERROR: BIO_read could not read "
683 "BIO_ctrl_pending() bytes");
684 goto err;
685 }
686 r = BIO_write(server_io, buf, (int)num);
687 if (r != (int)num) /* can't happen */
688 {
689 fprintf(stderr, "ERROR: BIO_write could not write "
690 "BIO_ctrl_get_write_guarantee() bytes");
691 goto err;
692 }
693 progress = 1;
694
695 if (debug)
696 printf("C->S relaying: %d bytes\n", (int)num);
697 }
698 }
699 while (r1 && r2);
700
701 /* server to client */
702 do
703 {
704 r1 = BIO_ctrl_pending(server_io);
705 r2 = BIO_ctrl_get_write_guarantee(client_io);
706
707 num = r1;
708 if (r2 < num)
709 num = r2;
710 if (num)
711 {
712 if (sizeof buf < num)
713 num = sizeof buf;
714 if (INT_MAX < num)
715 num = INT_MAX;
716
717 r = BIO_read(server_io, buf, (int)num);
718 if (r != (int)num) /* can't happen */
719 {
720 fprintf(stderr, "ERROR: BIO_read could not read "
721 "BIO_ctrl_pending() bytes");
722 goto err;
723 }
724 r = BIO_write(client_io, buf, (int)num);
725 if (r != (int)num) /* can't happen */
726 {
727 fprintf(stderr, "ERROR: BIO_write could not write "
728 "BIO_ctrl_get_write_guarantee() bytes");
729 goto err;
730 }
731 progress = 1;
732
733 if (debug)
734 printf("S->C relaying: %d bytes\n", (int)num);
735 }
736 }
737 while (r1 && r2);
738
739 if (!progress && !prev_progress)
740 if (cw_num > 0 || cr_num > 0 || sw_num > 0 || sr_num > 0)
741 {
742 fprintf(stderr, "ERROR: got stuck\n");
743 if (strcmp("SSLv2", SSL_get_version(c_ssl)) == 0)
744 {
745 fprintf(stderr, "This can happen for SSL2 because "
746 "CLIENT-FINISHED and SERVER-VERIFY are written \n"
747 "concurrently ...");
748 if (strncmp("2SCF", SSL_state_string(c_ssl), 4) == 0
749 && strncmp("2SSV", SSL_state_string(s_ssl), 4) == 0)
750 {
751 fprintf(stderr, " ok.\n");
752 goto end;
753 }
754 }
755 fprintf(stderr, " ERROR.\n");
756 goto err;
757 }
758 prev_progress = progress;
759 }
760 }
761 while (cw_num > 0 || cr_num > 0 || sw_num > 0 || sr_num > 0);
762
763 ciph = SSL_get_current_cipher(c_ssl);
764 if (verbose)
765 fprintf(stdout,"DONE via BIO pair, protocol %s, cipher %s, %s\n",
766 SSL_get_version(c_ssl),
767 SSL_CIPHER_get_version(ciph),
768 SSL_CIPHER_get_name(ciph));
769 end:
770 ret = 0;
771
772 err:
773 ERR_print_errors(bio_err);
774
775 if (server)
776 BIO_free(server);
777 if (server_io)
778 BIO_free(server_io);
779 if (client)
780 BIO_free(client);
781 if (client_io)
782 BIO_free(client_io);
783 if (s_ssl_bio)
784 BIO_free(s_ssl_bio);
785 if (c_ssl_bio)
786 BIO_free(c_ssl_bio);
787
788 return ret;
789 }
790
791
792 #define W_READ 1
793 #define W_WRITE 2
794 #define C_DONE 1
795 #define S_DONE 2
796
797 int doit(SSL *s_ssl, SSL *c_ssl, long count)
798 {
799 MS_STATIC char cbuf[1024*8],sbuf[1024*8];
800 long cw_num=count,cr_num=count;
801 long sw_num=count,sr_num=count;
802 int ret=1;
803 BIO *c_to_s=NULL;
804 BIO *s_to_c=NULL;
805 BIO *c_bio=NULL;
806 BIO *s_bio=NULL;
807 int c_r,c_w,s_r,s_w;
808 int c_want,s_want;
809 int i,j;
810 int done=0;
811 int c_write,s_write;
812 int do_server=0,do_client=0;
813 SSL_CIPHER *ciph;
814
815 c_to_s=BIO_new(BIO_s_mem());
816 s_to_c=BIO_new(BIO_s_mem());
817 if ((s_to_c == NULL) || (c_to_s == NULL))
818 {
819 ERR_print_errors(bio_err);
820 goto err;
821 }
822
823 c_bio=BIO_new(BIO_f_ssl());
824 s_bio=BIO_new(BIO_f_ssl());
825 if ((c_bio == NULL) || (s_bio == NULL))
826 {
827 ERR_print_errors(bio_err);
828 goto err;
829 }
830
831 SSL_set_connect_state(c_ssl);
832 SSL_set_bio(c_ssl,s_to_c,c_to_s);
833 BIO_set_ssl(c_bio,c_ssl,BIO_NOCLOSE);
834
835 SSL_set_accept_state(s_ssl);
836 SSL_set_bio(s_ssl,c_to_s,s_to_c);
837 BIO_set_ssl(s_bio,s_ssl,BIO_NOCLOSE);
838
839 c_r=0; s_r=1;
840 c_w=1; s_w=0;
841 c_want=W_WRITE;
842 s_want=0;
843 c_write=1,s_write=0;
844
845 /* We can always do writes */
846 for (;;)
847 {
848 do_server=0;
849 do_client=0;
850
851 i=(int)BIO_pending(s_bio);
852 if ((i && s_r) || s_w) do_server=1;
853
854 i=(int)BIO_pending(c_bio);
855 if ((i && c_r) || c_w) do_client=1;
856
857 if (do_server && debug)
858 {
859 if (SSL_in_init(s_ssl))
860 printf("server waiting in SSL_accept - %s\n",
861 SSL_state_string_long(s_ssl));
862 /* else if (s_write)
863 printf("server:SSL_write()\n");
864 else
865 printf("server:SSL_read()\n"); */
866 }
867
868 if (do_client && debug)
869 {
870 if (SSL_in_init(c_ssl))
871 printf("client waiting in SSL_connect - %s\n",
872 SSL_state_string_long(c_ssl));
873 /* else if (c_write)
874 printf("client:SSL_write()\n");
875 else
876 printf("client:SSL_read()\n"); */
877 }
878
879 if (!do_client && !do_server)
880 {
881 fprintf(stdout,"ERROR IN STARTUP\n");
882 ERR_print_errors(bio_err);
883 break;
884 }
885 if (do_client && !(done & C_DONE))
886 {
887 if (c_write)
888 {
889 j=(cw_num > (long)sizeof(cbuf))
890 ?sizeof(cbuf):(int)cw_num;
891 i=BIO_write(c_bio,cbuf,j);
892 if (i < 0)
893 {
894 c_r=0;
895 c_w=0;
896 if (BIO_should_retry(c_bio))
897 {
898 if (BIO_should_read(c_bio))
899 c_r=1;
900 if (BIO_should_write(c_bio))
901 c_w=1;
902 }
903 else
904 {
905 fprintf(stderr,"ERROR in CLIENT\n");
906 ERR_print_errors(bio_err);
907 goto err;
908 }
909 }
910 else if (i == 0)
911 {
912 fprintf(stderr,"SSL CLIENT STARTUP FAILED\n");
913 goto err;
914 }
915 else
916 {
917 if (debug)
918 printf("client wrote %d\n",i);
919 /* ok */
920 s_r=1;
921 c_write=0;
922 cw_num-=i;
923 }
924 }
925 else
926 {
927 i=BIO_read(c_bio,cbuf,sizeof(cbuf));
928 if (i < 0)
929 {
930 c_r=0;
931 c_w=0;
932 if (BIO_should_retry(c_bio))
933 {
934 if (BIO_should_read(c_bio))
935 c_r=1;
936 if (BIO_should_write(c_bio))
937 c_w=1;
938 }
939 else
940 {
941 fprintf(stderr,"ERROR in CLIENT\n");
942 ERR_print_errors(bio_err);
943 goto err;
944 }
945 }
946 else if (i == 0)
947 {
948 fprintf(stderr,"SSL CLIENT STARTUP FAILED\n");
949 goto err;
950 }
951 else
952 {
953 if (debug)
954 printf("client read %d\n",i);
955 cr_num-=i;
956 if (sw_num > 0)
957 {
958 s_write=1;
959 s_w=1;
960 }
961 if (cr_num <= 0)
962 {
963 s_write=1;
964 s_w=1;
965 done=S_DONE|C_DONE;
966 }
967 }
968 }
969 }
970
971 if (do_server && !(done & S_DONE))
972 {
973 if (!s_write)
974 {
975 i=BIO_read(s_bio,sbuf,sizeof(cbuf));
976 if (i < 0)
977 {
978 s_r=0;
979 s_w=0;
980 if (BIO_should_retry(s_bio))
981 {
982 if (BIO_should_read(s_bio))
983 s_r=1;
984 if (BIO_should_write(s_bio))
985 s_w=1;
986 }
987 else
988 {
989 fprintf(stderr,"ERROR in SERVER\n");
990 ERR_print_errors(bio_err);
991 goto err;
992 }
993 }
994 else if (i == 0)
995 {
996 ERR_print_errors(bio_err);
997 fprintf(stderr,"SSL SERVER STARTUP FAILED in SSL_read\n");
998 goto err;
999 }
1000 else
1001 {
1002 if (debug)
1003 printf("server read %d\n",i);
1004 sr_num-=i;
1005 if (cw_num > 0)
1006 {
1007 c_write=1;
1008 c_w=1;
1009 }
1010 if (sr_num <= 0)
1011 {
1012 s_write=1;
1013 s_w=1;
1014 c_write=0;
1015 }
1016 }
1017 }
1018 else
1019 {
1020 j=(sw_num > (long)sizeof(sbuf))?
1021 sizeof(sbuf):(int)sw_num;
1022 i=BIO_write(s_bio,sbuf,j);
1023 if (i < 0)
1024 {
1025 s_r=0;
1026 s_w=0;
1027 if (BIO_should_retry(s_bio))
1028 {
1029 if (BIO_should_read(s_bio))
1030 s_r=1;
1031 if (BIO_should_write(s_bio))
1032 s_w=1;
1033 }
1034 else
1035 {
1036 fprintf(stderr,"ERROR in SERVER\n");
1037 ERR_print_errors(bio_err);
1038 goto err;
1039 }
1040 }
1041 else if (i == 0)
1042 {
1043 ERR_print_errors(bio_err);
1044 fprintf(stderr,"SSL SERVER STARTUP FAILED in SSL_write\n");
1045 goto err;
1046 }
1047 else
1048 {
1049 if (debug)
1050 printf("server wrote %d\n",i);
1051 sw_num-=i;
1052 s_write=0;
1053 c_r=1;
1054 if (sw_num <= 0)
1055 done|=S_DONE;
1056 }
1057 }
1058 }
1059
1060 if ((done & S_DONE) && (done & C_DONE)) break;
1061 }
1062
1063 ciph=SSL_get_current_cipher(c_ssl);
1064 if (verbose)
1065 fprintf(stdout,"DONE, protocol %s, cipher %s, %s\n",
1066 SSL_get_version(c_ssl),
1067 SSL_CIPHER_get_version(ciph),
1068 SSL_CIPHER_get_name(ciph));
1069 ret=0;
1070 err:
1071 /* We have to set the BIO's to NULL otherwise they will be
1072 * Free()ed twice. Once when th s_ssl is SSL_free()ed and
1073 * again when c_ssl is SSL_free()ed.
1074 * This is a hack required because s_ssl and c_ssl are sharing the same
1075 * BIO structure and SSL_set_bio() and SSL_free() automatically
1076 * BIO_free non NULL entries.
1077 * You should not normally do this or be required to do this */
1078 if (s_ssl != NULL)
1079 {
1080 s_ssl->rbio=NULL;
1081 s_ssl->wbio=NULL;
1082 }
1083 if (c_ssl != NULL)
1084 {
1085 c_ssl->rbio=NULL;
1086 c_ssl->wbio=NULL;
1087 }
1088
1089 if (c_to_s != NULL) BIO_free(c_to_s);
1090 if (s_to_c != NULL) BIO_free(s_to_c);
1091 if (c_bio != NULL) BIO_free_all(c_bio);
1092 if (s_bio != NULL) BIO_free_all(s_bio);
1093 return(ret);
1094 }
1095
1096 int MS_CALLBACK verify_callback(int ok, X509_STORE_CTX *ctx)
1097 {
1098 char *s,buf[256];
1099
1100 s=X509_NAME_oneline(X509_get_subject_name(ctx->current_cert),buf,256);
1101 if (s != NULL)
1102 {
1103 if (ok)
1104 fprintf(stderr,"depth=%d %s\n",ctx->error_depth,buf);
1105 else
1106 fprintf(stderr,"depth=%d error=%d %s\n",
1107 ctx->error_depth,ctx->error,buf);
1108 }
1109
1110 if (ok == 0)
1111 {
1112 switch (ctx->error)
1113 {
1114 case X509_V_ERR_CERT_NOT_YET_VALID:
1115 case X509_V_ERR_CERT_HAS_EXPIRED:
1116 case X509_V_ERR_DEPTH_ZERO_SELF_SIGNED_CERT:
1117 ok=1;
1118 }
1119 }
1120
1121 return(ok);
1122 }
1123
1124 #ifndef NO_DH
1125 static unsigned char dh512_p[]={
1126 0xDA,0x58,0x3C,0x16,0xD9,0x85,0x22,0x89,0xD0,0xE4,0xAF,0x75,
1127 0x6F,0x4C,0xCA,0x92,0xDD,0x4B,0xE5,0x33,0xB8,0x04,0xFB,0x0F,
1128 0xED,0x94,0xEF,0x9C,0x8A,0x44,0x03,0xED,0x57,0x46,0x50,0xD3,
1129 0x69,0x99,0xDB,0x29,0xD7,0x76,0x27,0x6B,0xA2,0xD3,0xD4,0x12,
1130 0xE2,0x18,0xF4,0xDD,0x1E,0x08,0x4C,0xF6,0xD8,0x00,0x3E,0x7C,
1131 0x47,0x74,0xE8,0x33,
1132 };
1133 static unsigned char dh512_g[]={
1134 0x02,
1135 };
1136
1137 static DH *get_dh512(void)
1138 {
1139 DH *dh=NULL;
1140
1141 if ((dh=DH_new()) == NULL) return(NULL);
1142 dh->p=BN_bin2bn(dh512_p,sizeof(dh512_p),NULL);
1143 dh->g=BN_bin2bn(dh512_g,sizeof(dh512_g),NULL);
1144 if ((dh->p == NULL) || (dh->g == NULL))
1145 return(NULL);
1146 return(dh);
1147 }
1148 #endif
1149
1150 #ifndef NO_RSA
1151 static RSA MS_CALLBACK *tmp_rsa_cb(SSL *s, int is_export, int keylength)
1152 {
1153 static RSA *rsa_tmp=NULL;
1154
1155 if (rsa_tmp == NULL)
1156 {
1157 BIO_printf(bio_err,"Generating temp (%d bit) RSA key...",keylength);
1158 (void)BIO_flush(bio_err);
1159 rsa_tmp=RSA_generate_key(keylength,RSA_F4,NULL,NULL);
1160 BIO_printf(bio_err,"\n");
1161 (void)BIO_flush(bio_err);
1162 }
1163 return(rsa_tmp);
1164 }
1165 #endif
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