Separate client and server permitted signature algorithm support: by default
[openssl.git] / apps / s_client.c
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) 1998-2006 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 <assert.h>
139 #include <ctype.h>
140 #include <stdio.h>
141 #include <stdlib.h>
142 #include <string.h>
143 #include <openssl/e_os2.h>
144 #ifdef OPENSSL_NO_STDIO
145 #define APPS_WIN16
146 #endif
147
148 /* With IPv6, it looks like Digital has mixed up the proper order of
149    recursive header file inclusion, resulting in the compiler complaining
150    that u_int isn't defined, but only if _POSIX_C_SOURCE is defined, which
151    is needed to have fileno() declared correctly...  So let's define u_int */
152 #if defined(OPENSSL_SYS_VMS_DECC) && !defined(__U_INT)
153 #define __U_INT
154 typedef unsigned int u_int;
155 #endif
156
157 #define USE_SOCKETS
158 #include "apps.h"
159 #include <openssl/x509.h>
160 #include <openssl/ssl.h>
161 #include <openssl/err.h>
162 #include <openssl/pem.h>
163 #include <openssl/rand.h>
164 #include <openssl/ocsp.h>
165 #include <openssl/bn.h>
166 #ifndef OPENSSL_NO_SRP
167 #include <openssl/srp.h>
168 #endif
169 #include "s_apps.h"
170 #include "timeouts.h"
171
172 #if (defined(OPENSSL_SYS_VMS) && __VMS_VER < 70000000)
173 /* FIONBIO used as a switch to enable ioctl, and that isn't in VMS < 7.0 */
174 #undef FIONBIO
175 #endif
176
177 #if defined(OPENSSL_SYS_BEOS_R5)
178 #include <fcntl.h>
179 #endif
180
181 #undef PROG
182 #define PROG    s_client_main
183
184 /*#define SSL_HOST_NAME "www.netscape.com" */
185 /*#define SSL_HOST_NAME "193.118.187.102" */
186 #define SSL_HOST_NAME   "localhost"
187
188 /*#define TEST_CERT "client.pem" */ /* no default cert. */
189
190 #undef BUFSIZZ
191 #define BUFSIZZ 1024*8
192
193 extern int verify_depth;
194 extern int verify_error;
195 extern int verify_return_error;
196
197 #ifdef FIONBIO
198 static int c_nbio=0;
199 #endif
200 static int c_Pause=0;
201 static int c_debug=0;
202 #ifndef OPENSSL_NO_TLSEXT
203 static int c_tlsextdebug=0;
204 static int c_status_req=0;
205 static int c_proof_debug=0;
206 #endif
207 static int c_msg=0;
208 static int c_showcerts=0;
209
210 static char *keymatexportlabel=NULL;
211 static int keymatexportlen=20;
212
213 static void sc_usage(void);
214 static void print_stuff(BIO *berr,SSL *con,int full);
215 #ifndef OPENSSL_NO_TLSEXT
216 static int ocsp_resp_cb(SSL *s, void *arg);
217 static int audit_proof_cb(SSL *s, void *arg);
218 #endif
219 static BIO *bio_c_out=NULL;
220 static BIO *bio_c_msg=NULL;
221 static int c_quiet=0;
222 static int c_ign_eof=0;
223
224 #ifndef OPENSSL_NO_PSK
225 /* Default PSK identity and key */
226 static char *psk_identity="Client_identity";
227 /*char *psk_key=NULL;  by default PSK is not used */
228
229 static unsigned int psk_client_cb(SSL *ssl, const char *hint, char *identity,
230         unsigned int max_identity_len, unsigned char *psk,
231         unsigned int max_psk_len)
232         {
233         unsigned int psk_len = 0;
234         int ret;
235         BIGNUM *bn=NULL;
236
237         if (c_debug)
238                 BIO_printf(bio_c_out, "psk_client_cb\n");
239         if (!hint)
240                 {
241                 /* no ServerKeyExchange message*/
242                 if (c_debug)
243                         BIO_printf(bio_c_out,"NULL received PSK identity hint, continuing anyway\n");
244                 }
245         else if (c_debug)
246                 BIO_printf(bio_c_out, "Received PSK identity hint '%s'\n", hint);
247
248         /* lookup PSK identity and PSK key based on the given identity hint here */
249         ret = BIO_snprintf(identity, max_identity_len, "%s", psk_identity);
250         if (ret < 0 || (unsigned int)ret > max_identity_len)
251                 goto out_err;
252         if (c_debug)
253                 BIO_printf(bio_c_out, "created identity '%s' len=%d\n", identity, ret);
254         ret=BN_hex2bn(&bn, psk_key);
255         if (!ret)
256                 {
257                 BIO_printf(bio_err,"Could not convert PSK key '%s' to BIGNUM\n", psk_key);
258                 if (bn)
259                         BN_free(bn);
260                 return 0;
261                 }
262
263         if ((unsigned int)BN_num_bytes(bn) > max_psk_len)
264                 {
265                 BIO_printf(bio_err,"psk buffer of callback is too small (%d) for key (%d)\n",
266                         max_psk_len, BN_num_bytes(bn));
267                 BN_free(bn);
268                 return 0;
269                 }
270
271         psk_len=BN_bn2bin(bn, psk);
272         BN_free(bn);
273         if (psk_len == 0)
274                 goto out_err;
275
276         if (c_debug)
277                 BIO_printf(bio_c_out, "created PSK len=%d\n", psk_len);
278
279         return psk_len;
280  out_err:
281         if (c_debug)
282                 BIO_printf(bio_err, "Error in PSK client callback\n");
283         return 0;
284         }
285 #endif
286
287 static void sc_usage(void)
288         {
289         BIO_printf(bio_err,"usage: s_client args\n");
290         BIO_printf(bio_err,"\n");
291         BIO_printf(bio_err," -host host     - use -connect instead\n");
292         BIO_printf(bio_err," -port port     - use -connect instead\n");
293         BIO_printf(bio_err," -connect host:port - who to connect to (default is %s:%s)\n",SSL_HOST_NAME,PORT_STR);
294
295         BIO_printf(bio_err," -verify arg   - turn on peer certificate verification\n");
296         BIO_printf(bio_err," -cert arg     - certificate file to use, PEM format assumed\n");
297         BIO_printf(bio_err," -certform arg - certificate format (PEM or DER) PEM default\n");
298         BIO_printf(bio_err," -key arg      - Private key file to use, in cert file if\n");
299         BIO_printf(bio_err,"                 not specified but cert file is.\n");
300         BIO_printf(bio_err," -keyform arg  - key format (PEM or DER) PEM default\n");
301         BIO_printf(bio_err," -pass arg     - private key file pass phrase source\n");
302         BIO_printf(bio_err," -CApath arg   - PEM format directory of CA's\n");
303         BIO_printf(bio_err," -CAfile arg   - PEM format file of CA's\n");
304         BIO_printf(bio_err," -reconnect    - Drop and re-make the connection with the same Session-ID\n");
305         BIO_printf(bio_err," -pause        - sleep(1) after each read(2) and write(2) system call\n");
306         BIO_printf(bio_err," -showcerts    - show all certificates in the chain\n");
307         BIO_printf(bio_err," -debug        - extra output\n");
308 #ifdef WATT32
309         BIO_printf(bio_err," -wdebug       - WATT-32 tcp debugging\n");
310 #endif
311         BIO_printf(bio_err," -msg          - Show protocol messages\n");
312         BIO_printf(bio_err," -nbio_test    - more ssl protocol testing\n");
313         BIO_printf(bio_err," -state        - print the 'ssl' states\n");
314 #ifdef FIONBIO
315         BIO_printf(bio_err," -nbio         - Run with non-blocking IO\n");
316 #endif
317         BIO_printf(bio_err," -crlf         - convert LF from terminal into CRLF\n");
318         BIO_printf(bio_err," -quiet        - no s_client output\n");
319         BIO_printf(bio_err," -ign_eof      - ignore input eof (default when -quiet)\n");
320         BIO_printf(bio_err," -no_ign_eof   - don't ignore input eof\n");
321 #ifndef OPENSSL_NO_PSK
322         BIO_printf(bio_err," -psk_identity arg - PSK identity\n");
323         BIO_printf(bio_err," -psk arg      - PSK in hex (without 0x)\n");
324 # ifndef OPENSSL_NO_JPAKE
325         BIO_printf(bio_err," -jpake arg    - JPAKE secret to use\n");
326 # endif
327 #endif
328 #ifndef OPENSSL_NO_SRP
329         BIO_printf(bio_err," -srpuser user     - SRP authentification for 'user'\n");
330         BIO_printf(bio_err," -srppass arg      - password for 'user'\n");
331         BIO_printf(bio_err," -srp_lateuser     - SRP username into second ClientHello message\n");
332         BIO_printf(bio_err," -srp_moregroups   - Tolerate other than the known g N values.\n");
333         BIO_printf(bio_err," -srp_strength int - minimal mength in bits for N (default %d).\n",SRP_MINIMAL_N);
334 #endif
335         BIO_printf(bio_err," -ssl2         - just use SSLv2\n");
336         BIO_printf(bio_err," -ssl3         - just use SSLv3\n");
337         BIO_printf(bio_err," -tls1_2       - just use TLSv1.2\n");
338         BIO_printf(bio_err," -tls1_1       - just use TLSv1.1\n");
339         BIO_printf(bio_err," -tls1         - just use TLSv1\n");
340         BIO_printf(bio_err," -dtls1        - just use DTLSv1\n");    
341         BIO_printf(bio_err," -mtu          - set the link layer MTU\n");
342         BIO_printf(bio_err," -no_tls1_2/-no_tls1_1/-no_tls1/-no_ssl3/-no_ssl2 - turn off that protocol\n");
343         BIO_printf(bio_err," -bugs         - Switch on all SSL implementation bug workarounds\n");
344         BIO_printf(bio_err," -serverpref   - Use server's cipher preferences (only SSLv2)\n");
345         BIO_printf(bio_err," -cipher       - preferred cipher to use, use the 'openssl ciphers'\n");
346         BIO_printf(bio_err,"                 command to see what is available\n");
347         BIO_printf(bio_err," -starttls prot - use the STARTTLS command before starting TLS\n");
348         BIO_printf(bio_err,"                 for those protocols that support it, where\n");
349         BIO_printf(bio_err,"                 'prot' defines which one to assume.  Currently,\n");
350         BIO_printf(bio_err,"                 only \"smtp\", \"pop3\", \"imap\", \"ftp\" and \"xmpp\"\n");
351         BIO_printf(bio_err,"                 are supported.\n");
352 #ifndef OPENSSL_NO_ENGINE
353         BIO_printf(bio_err," -engine id    - Initialise and use the specified engine\n");
354 #endif
355         BIO_printf(bio_err," -rand file%cfile%c...\n", LIST_SEPARATOR_CHAR, LIST_SEPARATOR_CHAR);
356         BIO_printf(bio_err," -sess_out arg - file to write SSL session to\n");
357         BIO_printf(bio_err," -sess_in arg  - file to read SSL session from\n");
358 #ifndef OPENSSL_NO_TLSEXT
359         BIO_printf(bio_err," -servername host  - Set TLS extension servername in ClientHello\n");
360         BIO_printf(bio_err," -tlsextdebug      - hex dump of all TLS extensions received\n");
361         BIO_printf(bio_err," -status           - request certificate status from server\n");
362         BIO_printf(bio_err," -no_ticket        - disable use of RFC4507bis session tickets\n");
363         BIO_printf(bio_err," -proof_debug      - request an audit proof and print its hex dump\n");
364 # ifndef OPENSSL_NO_NEXTPROTONEG
365         BIO_printf(bio_err," -nextprotoneg arg - enable NPN extension, considering named protocols supported (comma-separated list)\n");
366 # endif
367 #endif
368         BIO_printf(bio_err," -legacy_renegotiation - enable use of legacy renegotiation (dangerous)\n");
369         BIO_printf(bio_err," -use_srtp profiles - Offer SRTP key management with a colon-separated profile list\n");
370         BIO_printf(bio_err," -keymatexport label   - Export keying material using label\n");
371         BIO_printf(bio_err," -keymatexportlen len  - Export len bytes of keying material (default 20)\n");
372         }
373
374 #ifndef OPENSSL_NO_TLSEXT
375
376 /* This is a context that we pass to callbacks */
377 typedef struct tlsextctx_st {
378    BIO * biodebug;
379    int ack;
380 } tlsextctx;
381
382
383 static int MS_CALLBACK ssl_servername_cb(SSL *s, int *ad, void *arg)
384         {
385         tlsextctx * p = (tlsextctx *) arg;
386         const char * hn= SSL_get_servername(s, TLSEXT_NAMETYPE_host_name);
387         if (SSL_get_servername_type(s) != -1) 
388                 p->ack = !SSL_session_reused(s) && hn != NULL;
389         else 
390                 BIO_printf(bio_err,"Can't use SSL_get_servername\n");
391         
392         return SSL_TLSEXT_ERR_OK;
393         }
394
395 #ifndef OPENSSL_NO_SRP
396
397 /* This is a context that we pass to all callbacks */
398 typedef struct srp_arg_st
399         {
400         char *srppassin;
401         char *srplogin;
402         int msg;   /* copy from c_msg */
403         int debug; /* copy from c_debug */
404         int amp;   /* allow more groups */
405         int strength /* minimal size for N */ ;
406         } SRP_ARG;
407
408 #define SRP_NUMBER_ITERATIONS_FOR_PRIME 64
409
410 static int srp_Verify_N_and_g(const BIGNUM *N, const BIGNUM *g)
411         {
412         BN_CTX *bn_ctx = BN_CTX_new();
413         BIGNUM *p = BN_new();
414         BIGNUM *r = BN_new();
415         int ret =
416                 g != NULL && N != NULL && bn_ctx != NULL && BN_is_odd(N) &&
417                 BN_is_prime_ex(N, SRP_NUMBER_ITERATIONS_FOR_PRIME, bn_ctx, NULL) &&
418                 p != NULL && BN_rshift1(p, N) &&
419
420                 /* p = (N-1)/2 */
421                 BN_is_prime_ex(p, SRP_NUMBER_ITERATIONS_FOR_PRIME, bn_ctx, NULL) &&
422                 r != NULL &&
423
424                 /* verify g^((N-1)/2) == -1 (mod N) */
425                 BN_mod_exp(r, g, p, N, bn_ctx) &&
426                 BN_add_word(r, 1) &&
427                 BN_cmp(r, N) == 0;
428
429         if(r)
430                 BN_free(r);
431         if(p)
432                 BN_free(p);
433         if(bn_ctx)
434                 BN_CTX_free(bn_ctx);
435         return ret;
436         }
437
438 /* This callback is used here for two purposes:
439    - extended debugging
440    - making some primality tests for unknown groups
441    The callback is only called for a non default group.
442
443    An application does not need the call back at all if
444    only the stanard groups are used.  In real life situations, 
445    client and server already share well known groups, 
446    thus there is no need to verify them. 
447    Furthermore, in case that a server actually proposes a group that
448    is not one of those defined in RFC 5054, it is more appropriate 
449    to add the group to a static list and then compare since 
450    primality tests are rather cpu consuming.
451 */
452
453 static int MS_CALLBACK ssl_srp_verify_param_cb(SSL *s, void *arg)
454         {
455         SRP_ARG *srp_arg = (SRP_ARG *)arg;
456         BIGNUM *N = NULL, *g = NULL;
457         if (!(N = SSL_get_srp_N(s)) || !(g = SSL_get_srp_g(s)))
458                 return 0;
459         if (srp_arg->debug || srp_arg->msg || srp_arg->amp == 1)
460                 {
461                 BIO_printf(bio_err, "SRP parameters:\n"); 
462                 BIO_printf(bio_err,"\tN="); BN_print(bio_err,N);
463                 BIO_printf(bio_err,"\n\tg="); BN_print(bio_err,g);
464                 BIO_printf(bio_err,"\n");
465                 }
466
467         if (SRP_check_known_gN_param(g,N))
468                 return 1;
469
470         if (srp_arg->amp == 1)
471                 {
472                 if (srp_arg->debug)
473                         BIO_printf(bio_err, "SRP param N and g are not known params, going to check deeper.\n");
474
475 /* The srp_moregroups is a real debugging feature.
476    Implementors should rather add the value to the known ones.
477    The minimal size has already been tested.
478 */
479                 if (BN_num_bits(g) <= BN_BITS && srp_Verify_N_and_g(N,g))
480                         return 1;
481                 }       
482         BIO_printf(bio_err, "SRP param N and g rejected.\n");
483         return 0;
484         }
485
486 #define PWD_STRLEN 1024
487
488 static char * MS_CALLBACK ssl_give_srp_client_pwd_cb(SSL *s, void *arg)
489         {
490         SRP_ARG *srp_arg = (SRP_ARG *)arg;
491         char *pass = (char *)OPENSSL_malloc(PWD_STRLEN+1);
492         PW_CB_DATA cb_tmp;
493         int l;
494
495         cb_tmp.password = (char *)srp_arg->srppassin;
496         cb_tmp.prompt_info = "SRP user";
497         if ((l = password_callback(pass, PWD_STRLEN, 0, &cb_tmp))<0)
498                 {
499                 BIO_printf (bio_err, "Can't read Password\n");
500                 OPENSSL_free(pass);
501                 return NULL;
502                 }
503         *(pass+l)= '\0';
504
505         return pass;
506         }
507
508 #endif
509         char *srtp_profiles = NULL;
510
511 # ifndef OPENSSL_NO_NEXTPROTONEG
512 /* This the context that we pass to next_proto_cb */
513 typedef struct tlsextnextprotoctx_st {
514         unsigned char *data;
515         unsigned short len;
516         int status;
517 } tlsextnextprotoctx;
518
519 static tlsextnextprotoctx next_proto;
520
521 static int next_proto_cb(SSL *s, unsigned char **out, unsigned char *outlen, const unsigned char *in, unsigned int inlen, void *arg)
522         {
523         tlsextnextprotoctx *ctx = arg;
524
525         if (!c_quiet)
526                 {
527                 /* We can assume that |in| is syntactically valid. */
528                 unsigned i;
529                 BIO_printf(bio_c_out, "Protocols advertised by server: ");
530                 for (i = 0; i < inlen; )
531                         {
532                         if (i)
533                                 BIO_write(bio_c_out, ", ", 2);
534                         BIO_write(bio_c_out, &in[i + 1], in[i]);
535                         i += in[i] + 1;
536                         }
537                 BIO_write(bio_c_out, "\n", 1);
538                 }
539
540         ctx->status = SSL_select_next_proto(out, outlen, in, inlen, ctx->data, ctx->len);
541         return SSL_TLSEXT_ERR_OK;
542         }
543 # endif  /* ndef OPENSSL_NO_NEXTPROTONEG */
544 #endif
545
546 enum
547 {
548         PROTO_OFF       = 0,
549         PROTO_SMTP,
550         PROTO_POP3,
551         PROTO_IMAP,
552         PROTO_FTP,
553         PROTO_XMPP
554 };
555
556 int MAIN(int, char **);
557
558 int MAIN(int argc, char **argv)
559         {
560         unsigned int off=0, clr=0;
561         SSL *con=NULL;
562 #ifndef OPENSSL_NO_KRB5
563         KSSL_CTX *kctx;
564 #endif
565         int s,k,width,state=0;
566         char *cbuf=NULL,*sbuf=NULL,*mbuf=NULL;
567         int cbuf_len,cbuf_off;
568         int sbuf_len,sbuf_off;
569         fd_set readfds,writefds;
570         short port=PORT;
571         int full_log=1;
572         char *host=SSL_HOST_NAME;
573         char *cert_file=NULL,*key_file=NULL;
574         int cert_format = FORMAT_PEM, key_format = FORMAT_PEM;
575         char *passarg = NULL, *pass = NULL;
576         X509 *cert = NULL;
577         EVP_PKEY *key = NULL;
578         char *CApath=NULL,*CAfile=NULL,*cipher=NULL;
579         int reconnect=0,badop=0,verify=SSL_VERIFY_NONE,bugs=0;
580         int crlf=0;
581         int write_tty,read_tty,write_ssl,read_ssl,tty_on,ssl_pending;
582         SSL_CTX *ctx=NULL;
583         int ret=1,in_init=1,i,nbio_test=0;
584         int starttls_proto = PROTO_OFF;
585         int prexit = 0;
586         X509_VERIFY_PARAM *vpm = NULL;
587         int badarg = 0;
588         const SSL_METHOD *meth=NULL;
589         int socket_type=SOCK_STREAM;
590         BIO *sbio;
591         char *inrand=NULL;
592         int mbuf_len=0;
593         struct timeval timeout, *timeoutp;
594 #ifndef OPENSSL_NO_ENGINE
595         char *engine_id=NULL;
596         char *ssl_client_engine_id=NULL;
597         ENGINE *ssl_client_engine=NULL;
598 #endif
599         ENGINE *e=NULL;
600 #if defined(OPENSSL_SYS_WINDOWS) || defined(OPENSSL_SYS_MSDOS) || defined(OPENSSL_SYS_NETWARE) || defined(OPENSSL_SYS_BEOS_R5)
601         struct timeval tv;
602 #if defined(OPENSSL_SYS_BEOS_R5)
603         int stdin_set = 0;
604 #endif
605 #endif
606 #ifndef OPENSSL_NO_TLSEXT
607         char *servername = NULL; 
608         char *curves=NULL;
609         char *sigalgs=NULL;
610         char *client_sigalgs=NULL;
611         tlsextctx tlsextcbp = 
612         {NULL,0};
613 # ifndef OPENSSL_NO_NEXTPROTONEG
614         const char *next_proto_neg_in = NULL;
615 # endif
616 #endif
617         char *sess_in = NULL;
618         char *sess_out = NULL;
619         struct sockaddr peer;
620         int peerlen = sizeof(peer);
621         int enable_timeouts = 0 ;
622         long socket_mtu = 0;
623 #ifndef OPENSSL_NO_JPAKE
624         char *jpake_secret = NULL;
625 #endif
626 #ifndef OPENSSL_NO_SRP
627         char * srppass = NULL;
628         int srp_lateuser = 0;
629         SRP_ARG srp_arg = {NULL,NULL,0,0,0,1024};
630 #endif
631
632         meth=SSLv23_client_method();
633
634         apps_startup();
635         c_Pause=0;
636         c_quiet=0;
637         c_ign_eof=0;
638         c_debug=0;
639         c_msg=0;
640         c_showcerts=0;
641
642         if (bio_err == NULL)
643                 bio_err=BIO_new_fp(stderr,BIO_NOCLOSE);
644
645         if (!load_config(bio_err, NULL))
646                 goto end;
647
648         if (    ((cbuf=OPENSSL_malloc(BUFSIZZ)) == NULL) ||
649                 ((sbuf=OPENSSL_malloc(BUFSIZZ)) == NULL) ||
650                 ((mbuf=OPENSSL_malloc(BUFSIZZ)) == NULL))
651                 {
652                 BIO_printf(bio_err,"out of memory\n");
653                 goto end;
654                 }
655
656         verify_depth=0;
657         verify_error=X509_V_OK;
658 #ifdef FIONBIO
659         c_nbio=0;
660 #endif
661
662         argc--;
663         argv++;
664         while (argc >= 1)
665                 {
666                 if      (strcmp(*argv,"-host") == 0)
667                         {
668                         if (--argc < 1) goto bad;
669                         host= *(++argv);
670                         }
671                 else if (strcmp(*argv,"-port") == 0)
672                         {
673                         if (--argc < 1) goto bad;
674                         port=atoi(*(++argv));
675                         if (port == 0) goto bad;
676                         }
677                 else if (strcmp(*argv,"-connect") == 0)
678                         {
679                         if (--argc < 1) goto bad;
680                         if (!extract_host_port(*(++argv),&host,NULL,&port))
681                                 goto bad;
682                         }
683                 else if (strcmp(*argv,"-verify") == 0)
684                         {
685                         verify=SSL_VERIFY_PEER;
686                         if (--argc < 1) goto bad;
687                         verify_depth=atoi(*(++argv));
688                         BIO_printf(bio_err,"verify depth is %d\n",verify_depth);
689                         }
690                 else if (strcmp(*argv,"-cert") == 0)
691                         {
692                         if (--argc < 1) goto bad;
693                         cert_file= *(++argv);
694                         }
695                 else if (strcmp(*argv,"-sess_out") == 0)
696                         {
697                         if (--argc < 1) goto bad;
698                         sess_out = *(++argv);
699                         }
700                 else if (strcmp(*argv,"-sess_in") == 0)
701                         {
702                         if (--argc < 1) goto bad;
703                         sess_in = *(++argv);
704                         }
705                 else if (strcmp(*argv,"-certform") == 0)
706                         {
707                         if (--argc < 1) goto bad;
708                         cert_format = str2fmt(*(++argv));
709                         }
710                 else if (args_verify(&argv, &argc, &badarg, bio_err, &vpm))
711                         {
712                         if (badarg)
713                                 goto bad;
714                         continue;
715                         }
716                 else if (strcmp(*argv,"-verify_return_error") == 0)
717                         verify_return_error = 1;
718                 else if (strcmp(*argv,"-prexit") == 0)
719                         prexit=1;
720                 else if (strcmp(*argv,"-crlf") == 0)
721                         crlf=1;
722                 else if (strcmp(*argv,"-quiet") == 0)
723                         {
724                         c_quiet=1;
725                         c_ign_eof=1;
726                         }
727                 else if (strcmp(*argv,"-ign_eof") == 0)
728                         c_ign_eof=1;
729                 else if (strcmp(*argv,"-no_ign_eof") == 0)
730                         c_ign_eof=0;
731                 else if (strcmp(*argv,"-pause") == 0)
732                         c_Pause=1;
733                 else if (strcmp(*argv,"-debug") == 0)
734                         c_debug=1;
735 #ifndef OPENSSL_NO_TLSEXT
736                 else if (strcmp(*argv,"-tlsextdebug") == 0)
737                         c_tlsextdebug=1;
738                 else if (strcmp(*argv,"-status") == 0)
739                         c_status_req=1;
740                 else if (strcmp(*argv,"-proof_debug") == 0)
741                         c_proof_debug=1;
742 #endif
743 #ifdef WATT32
744                 else if (strcmp(*argv,"-wdebug") == 0)
745                         dbug_init();
746 #endif
747                 else if (strcmp(*argv,"-msg") == 0)
748                         c_msg=1;
749                 else if (strcmp(*argv,"-msgfile") == 0)
750                         {
751                         if (--argc < 1) goto bad;
752                         bio_c_msg = BIO_new_file(*(++argv), "w");
753                         }
754 #ifndef OPENSSL_NO_SSL_TRACE
755                 else if (strcmp(*argv,"-trace") == 0)
756                         c_msg=2;
757 #endif
758                 else if (strcmp(*argv,"-showcerts") == 0)
759                         c_showcerts=1;
760                 else if (strcmp(*argv,"-nbio_test") == 0)
761                         nbio_test=1;
762                 else if (strcmp(*argv,"-state") == 0)
763                         state=1;
764 #ifndef OPENSSL_NO_PSK
765                 else if (strcmp(*argv,"-psk_identity") == 0)
766                         {
767                         if (--argc < 1) goto bad;
768                         psk_identity=*(++argv);
769                         }
770                 else if (strcmp(*argv,"-psk") == 0)
771                         {
772                         size_t j;
773
774                         if (--argc < 1) goto bad;
775                         psk_key=*(++argv);
776                         for (j = 0; j < strlen(psk_key); j++)
777                                 {
778                                 if (isxdigit((unsigned char)psk_key[j]))
779                                         continue;
780                                 BIO_printf(bio_err,"Not a hex number '%s'\n",*argv);
781                                 goto bad;
782                                 }
783                         }
784 #endif
785 #ifndef OPENSSL_NO_SRP
786                 else if (strcmp(*argv,"-srpuser") == 0)
787                         {
788                         if (--argc < 1) goto bad;
789                         srp_arg.srplogin= *(++argv);
790                         meth=TLSv1_client_method();
791                         }
792                 else if (strcmp(*argv,"-srppass") == 0)
793                         {
794                         if (--argc < 1) goto bad;
795                         srppass= *(++argv);
796                         meth=TLSv1_client_method();
797                         }
798                 else if (strcmp(*argv,"-srp_strength") == 0)
799                         {
800                         if (--argc < 1) goto bad;
801                         srp_arg.strength=atoi(*(++argv));
802                         BIO_printf(bio_err,"SRP minimal length for N is %d\n",srp_arg.strength);
803                         meth=TLSv1_client_method();
804                         }
805                 else if (strcmp(*argv,"-srp_lateuser") == 0)
806                         {
807                         srp_lateuser= 1;
808                         meth=TLSv1_client_method();
809                         }
810                 else if (strcmp(*argv,"-srp_moregroups") == 0)
811                         {
812                         srp_arg.amp=1;
813                         meth=TLSv1_client_method();
814                         }
815 #endif
816 #ifndef OPENSSL_NO_SSL2
817                 else if (strcmp(*argv,"-ssl2") == 0)
818                         meth=SSLv2_client_method();
819 #endif
820 #ifndef OPENSSL_NO_SSL3
821                 else if (strcmp(*argv,"-ssl3") == 0)
822                         meth=SSLv3_client_method();
823 #endif
824 #ifndef OPENSSL_NO_TLS1
825                 else if (strcmp(*argv,"-tls1_2") == 0)
826                         meth=TLSv1_2_client_method();
827                 else if (strcmp(*argv,"-tls1_1") == 0)
828                         meth=TLSv1_1_client_method();
829                 else if (strcmp(*argv,"-tls1") == 0)
830                         meth=TLSv1_client_method();
831 #endif
832 #ifndef OPENSSL_NO_DTLS1
833                 else if (strcmp(*argv,"-dtls1") == 0)
834                         {
835                         meth=DTLSv1_client_method();
836                         socket_type=SOCK_DGRAM;
837                         }
838                 else if (strcmp(*argv,"-timeout") == 0)
839                         enable_timeouts=1;
840                 else if (strcmp(*argv,"-mtu") == 0)
841                         {
842                         if (--argc < 1) goto bad;
843                         socket_mtu = atol(*(++argv));
844                         }
845 #endif
846                 else if (strcmp(*argv,"-bugs") == 0)
847                         bugs=1;
848                 else if (strcmp(*argv,"-keyform") == 0)
849                         {
850                         if (--argc < 1) goto bad;
851                         key_format = str2fmt(*(++argv));
852                         }
853                 else if (strcmp(*argv,"-pass") == 0)
854                         {
855                         if (--argc < 1) goto bad;
856                         passarg = *(++argv);
857                         }
858                 else if (strcmp(*argv,"-key") == 0)
859                         {
860                         if (--argc < 1) goto bad;
861                         key_file= *(++argv);
862                         }
863                 else if (strcmp(*argv,"-reconnect") == 0)
864                         {
865                         reconnect=5;
866                         }
867                 else if (strcmp(*argv,"-CApath") == 0)
868                         {
869                         if (--argc < 1) goto bad;
870                         CApath= *(++argv);
871                         }
872                 else if (strcmp(*argv,"-CAfile") == 0)
873                         {
874                         if (--argc < 1) goto bad;
875                         CAfile= *(++argv);
876                         }
877                 else if (strcmp(*argv,"-no_tls1_2") == 0)
878                         off|=SSL_OP_NO_TLSv1_2;
879                 else if (strcmp(*argv,"-no_tls1_1") == 0)
880                         off|=SSL_OP_NO_TLSv1_1;
881                 else if (strcmp(*argv,"-no_tls1") == 0)
882                         off|=SSL_OP_NO_TLSv1;
883                 else if (strcmp(*argv,"-no_ssl3") == 0)
884                         off|=SSL_OP_NO_SSLv3;
885                 else if (strcmp(*argv,"-no_ssl2") == 0)
886                         off|=SSL_OP_NO_SSLv2;
887                 else if (strcmp(*argv,"-no_comp") == 0)
888                         { off|=SSL_OP_NO_COMPRESSION; }
889 #ifndef OPENSSL_NO_TLSEXT
890                 else if (strcmp(*argv,"-no_ticket") == 0)
891                         { off|=SSL_OP_NO_TICKET; }
892 # ifndef OPENSSL_NO_NEXTPROTONEG
893                 else if (strcmp(*argv,"-nextprotoneg") == 0)
894                         {
895                         if (--argc < 1) goto bad;
896                         next_proto_neg_in = *(++argv);
897                         }
898 # endif
899 #endif
900                 else if (strcmp(*argv,"-serverpref") == 0)
901                         off|=SSL_OP_CIPHER_SERVER_PREFERENCE;
902                 else if (strcmp(*argv,"-legacy_renegotiation") == 0)
903                         off|=SSL_OP_ALLOW_UNSAFE_LEGACY_RENEGOTIATION;
904                 else if (strcmp(*argv,"-legacy_server_connect") == 0)
905                         { off|=SSL_OP_LEGACY_SERVER_CONNECT; }
906                 else if (strcmp(*argv,"-no_legacy_server_connect") == 0)
907                         { clr|=SSL_OP_LEGACY_SERVER_CONNECT; }
908                 else if (strcmp(*argv,"-cipher") == 0)
909                         {
910                         if (--argc < 1) goto bad;
911                         cipher= *(++argv);
912                         }
913 #ifdef FIONBIO
914                 else if (strcmp(*argv,"-nbio") == 0)
915                         { c_nbio=1; }
916 #endif
917                 else if (strcmp(*argv,"-starttls") == 0)
918                         {
919                         if (--argc < 1) goto bad;
920                         ++argv;
921                         if (strcmp(*argv,"smtp") == 0)
922                                 starttls_proto = PROTO_SMTP;
923                         else if (strcmp(*argv,"pop3") == 0)
924                                 starttls_proto = PROTO_POP3;
925                         else if (strcmp(*argv,"imap") == 0)
926                                 starttls_proto = PROTO_IMAP;
927                         else if (strcmp(*argv,"ftp") == 0)
928                                 starttls_proto = PROTO_FTP;
929                         else if (strcmp(*argv, "xmpp") == 0)
930                                 starttls_proto = PROTO_XMPP;
931                         else
932                                 goto bad;
933                         }
934 #ifndef OPENSSL_NO_ENGINE
935                 else if (strcmp(*argv,"-engine") == 0)
936                         {
937                         if (--argc < 1) goto bad;
938                         engine_id = *(++argv);
939                         }
940                 else if (strcmp(*argv,"-ssl_client_engine") == 0)
941                         {
942                         if (--argc < 1) goto bad;
943                         ssl_client_engine_id = *(++argv);
944                         }
945 #endif
946                 else if (strcmp(*argv,"-rand") == 0)
947                         {
948                         if (--argc < 1) goto bad;
949                         inrand= *(++argv);
950                         }
951 #ifndef OPENSSL_NO_TLSEXT
952                 else if (strcmp(*argv,"-servername") == 0)
953                         {
954                         if (--argc < 1) goto bad;
955                         servername= *(++argv);
956                         /* meth=TLSv1_client_method(); */
957                         }
958                 else if (strcmp(*argv,"-curves") == 0)
959                         {
960                         if (--argc < 1) goto bad;
961                         curves= *(++argv);
962                         }
963                 else if (strcmp(*argv,"-sigalgs") == 0)
964                         {
965                         if (--argc < 1) goto bad;
966                         sigalgs= *(++argv);
967                         }
968                 else if (strcmp(*argv,"-client_sigalgs") == 0)
969                         {
970                         if (--argc < 1) goto bad;
971                         client_sigalgs= *(++argv);
972                         }
973 #endif
974 #ifndef OPENSSL_NO_JPAKE
975                 else if (strcmp(*argv,"-jpake") == 0)
976                         {
977                         if (--argc < 1) goto bad;
978                         jpake_secret = *++argv;
979                         }
980 #endif
981                 else if (strcmp(*argv,"-use_srtp") == 0)
982                         {
983                         if (--argc < 1) goto bad;
984                         srtp_profiles = *(++argv);
985                         }
986                 else if (strcmp(*argv,"-keymatexport") == 0)
987                         {
988                         if (--argc < 1) goto bad;
989                         keymatexportlabel= *(++argv);
990                         }
991                 else if (strcmp(*argv,"-keymatexportlen") == 0)
992                         {
993                         if (--argc < 1) goto bad;
994                         keymatexportlen=atoi(*(++argv));
995                         if (keymatexportlen == 0) goto bad;
996                         }
997                 else
998                         {
999                         BIO_printf(bio_err,"unknown option %s\n",*argv);
1000                         badop=1;
1001                         break;
1002                         }
1003                 argc--;
1004                 argv++;
1005                 }
1006         if (badop)
1007                 {
1008 bad:
1009                 sc_usage();
1010                 goto end;
1011                 }
1012
1013 #if !defined(OPENSSL_NO_JPAKE) && !defined(OPENSSL_NO_PSK)
1014         if (jpake_secret)
1015                 {
1016                 if (psk_key)
1017                         {
1018                         BIO_printf(bio_err,
1019                                    "Can't use JPAKE and PSK together\n");
1020                         goto end;
1021                         }
1022                 psk_identity = "JPAKE";
1023                 }
1024
1025         if (cipher)
1026                 {
1027                 BIO_printf(bio_err, "JPAKE sets cipher to PSK\n");
1028                 goto end;
1029                 }
1030         cipher = "PSK";
1031 #endif
1032
1033         OpenSSL_add_ssl_algorithms();
1034         SSL_load_error_strings();
1035
1036 #if !defined(OPENSSL_NO_TLSEXT) && !defined(OPENSSL_NO_NEXTPROTONEG)
1037         next_proto.status = -1;
1038         if (next_proto_neg_in)
1039                 {
1040                 next_proto.data = next_protos_parse(&next_proto.len, next_proto_neg_in);
1041                 if (next_proto.data == NULL)
1042                         {
1043                         BIO_printf(bio_err, "Error parsing -nextprotoneg argument\n");
1044                         goto end;
1045                         }
1046                 }
1047         else
1048                 next_proto.data = NULL;
1049 #endif
1050
1051 #ifndef OPENSSL_NO_ENGINE
1052         e = setup_engine(bio_err, engine_id, 1);
1053         if (ssl_client_engine_id)
1054                 {
1055                 ssl_client_engine = ENGINE_by_id(ssl_client_engine_id);
1056                 if (!ssl_client_engine)
1057                         {
1058                         BIO_printf(bio_err,
1059                                         "Error getting client auth engine\n");
1060                         goto end;
1061                         }
1062                 }
1063
1064 #endif
1065         if (!app_passwd(bio_err, passarg, NULL, &pass, NULL))
1066                 {
1067                 BIO_printf(bio_err, "Error getting password\n");
1068                 goto end;
1069                 }
1070
1071         if (key_file == NULL)
1072                 key_file = cert_file;
1073
1074
1075         if (key_file)
1076
1077                 {
1078
1079                 key = load_key(bio_err, key_file, key_format, 0, pass, e,
1080                                "client certificate private key file");
1081                 if (!key)
1082                         {
1083                         ERR_print_errors(bio_err);
1084                         goto end;
1085                         }
1086
1087                 }
1088
1089         if (cert_file)
1090
1091                 {
1092                 cert = load_cert(bio_err,cert_file,cert_format,
1093                                 NULL, e, "client certificate file");
1094
1095                 if (!cert)
1096                         {
1097                         ERR_print_errors(bio_err);
1098                         goto end;
1099                         }
1100                 }
1101
1102         if (!app_RAND_load_file(NULL, bio_err, 1) && inrand == NULL
1103                 && !RAND_status())
1104                 {
1105                 BIO_printf(bio_err,"warning, not much extra random data, consider using the -rand option\n");
1106                 }
1107         if (inrand != NULL)
1108                 BIO_printf(bio_err,"%ld semi-random bytes loaded\n",
1109                         app_RAND_load_files(inrand));
1110
1111         if (bio_c_out == NULL)
1112                 {
1113                 if (c_quiet && !c_debug && !c_msg)
1114                         {
1115                         bio_c_out=BIO_new(BIO_s_null());
1116                         }
1117                 else
1118                         {
1119                         if (bio_c_out == NULL)
1120                                 bio_c_out=BIO_new_fp(stdout,BIO_NOCLOSE);
1121                         }
1122                 }
1123
1124 #ifndef OPENSSL_NO_SRP
1125         if(!app_passwd(bio_err, srppass, NULL, &srp_arg.srppassin, NULL))
1126                 {
1127                 BIO_printf(bio_err, "Error getting password\n");
1128                 goto end;
1129                 }
1130 #endif
1131
1132         ctx=SSL_CTX_new(meth);
1133         if (ctx == NULL)
1134                 {
1135                 ERR_print_errors(bio_err);
1136                 goto end;
1137                 }
1138
1139         if (vpm)
1140                 SSL_CTX_set1_param(ctx, vpm);
1141
1142 #ifndef OPENSSL_NO_ENGINE
1143         if (ssl_client_engine)
1144                 {
1145                 if (!SSL_CTX_set_client_cert_engine(ctx, ssl_client_engine))
1146                         {
1147                         BIO_puts(bio_err, "Error setting client auth engine\n");
1148                         ERR_print_errors(bio_err);
1149                         ENGINE_free(ssl_client_engine);
1150                         goto end;
1151                         }
1152                 ENGINE_free(ssl_client_engine);
1153                 }
1154 #endif
1155
1156 #ifndef OPENSSL_NO_PSK
1157 #ifdef OPENSSL_NO_JPAKE
1158         if (psk_key != NULL)
1159 #else
1160         if (psk_key != NULL || jpake_secret)
1161 #endif
1162                 {
1163                 if (c_debug)
1164                         BIO_printf(bio_c_out, "PSK key given or JPAKE in use, setting client callback\n");
1165                 SSL_CTX_set_psk_client_callback(ctx, psk_client_cb);
1166                 }
1167         if (srtp_profiles != NULL)
1168                 SSL_CTX_set_tlsext_use_srtp(ctx, srtp_profiles);
1169 #endif
1170         if (bugs)
1171                 SSL_CTX_set_options(ctx,SSL_OP_ALL|off);
1172         else
1173                 SSL_CTX_set_options(ctx,off);
1174
1175         if (clr)
1176                 SSL_CTX_clear_options(ctx, clr);
1177         /* DTLS: partial reads end up discarding unread UDP bytes :-( 
1178          * Setting read ahead solves this problem.
1179          */
1180         if (socket_type == SOCK_DGRAM) SSL_CTX_set_read_ahead(ctx, 1);
1181
1182 #if !defined(OPENSSL_NO_TLSEXT) && !defined(OPENSSL_NO_NEXTPROTONEG)
1183         if (next_proto.data)
1184                 SSL_CTX_set_next_proto_select_cb(ctx, next_proto_cb, &next_proto);
1185 #endif
1186
1187         if (state) SSL_CTX_set_info_callback(ctx,apps_ssl_info_callback);
1188         if (cipher != NULL)
1189                 if(!SSL_CTX_set_cipher_list(ctx,cipher)) {
1190                 BIO_printf(bio_err,"error setting cipher list\n");
1191                 ERR_print_errors(bio_err);
1192                 goto end;
1193         }
1194 #if 0
1195         else
1196                 SSL_CTX_set_cipher_list(ctx,getenv("SSL_CIPHER"));
1197 #endif
1198
1199         SSL_CTX_set_verify(ctx,verify,verify_callback);
1200         if (!set_cert_key_stuff(ctx,cert,key, NULL))
1201                 goto end;
1202
1203         if ((!SSL_CTX_load_verify_locations(ctx,CAfile,CApath)) ||
1204                 (!SSL_CTX_set_default_verify_paths(ctx)))
1205                 {
1206                 /* BIO_printf(bio_err,"error setting default verify locations\n"); */
1207                 ERR_print_errors(bio_err);
1208                 /* goto end; */
1209                 }
1210
1211 #ifndef OPENSSL_NO_TLSEXT
1212         if (curves != NULL)
1213                 if(!SSL_CTX_set1_curves_list(ctx,curves)) {
1214                 BIO_printf(bio_err,"error setting curve list\n");
1215                 ERR_print_errors(bio_err);
1216                 goto end;
1217         }
1218         if (sigalgs != NULL)
1219                 if(!SSL_CTX_set1_sigalgs_list(ctx,sigalgs)) {
1220                 BIO_printf(bio_err,"error setting signature algorithms list\n");
1221                 ERR_print_errors(bio_err);
1222                 goto end;
1223         }
1224         if (client_sigalgs != NULL)
1225                 if(!SSL_CTX_set1_client_sigalgs_list(ctx,client_sigalgs)) {
1226                 BIO_printf(bio_err,"error setting client signature algorithms list\n");
1227                 ERR_print_errors(bio_err);
1228                 goto end;
1229         }
1230         if (servername != NULL)
1231                 {
1232                 tlsextcbp.biodebug = bio_err;
1233                 SSL_CTX_set_tlsext_servername_callback(ctx, ssl_servername_cb);
1234                 SSL_CTX_set_tlsext_servername_arg(ctx, &tlsextcbp);
1235                 }
1236 #ifndef OPENSSL_NO_SRP
1237         if (srp_arg.srplogin)
1238                 {
1239                 if (!srp_lateuser && !SSL_CTX_set_srp_username(ctx, srp_arg.srplogin))
1240                         {
1241                         BIO_printf(bio_err,"Unable to set SRP username\n");
1242                         goto end;
1243                         }
1244                 srp_arg.msg = c_msg;
1245                 srp_arg.debug = c_debug ;
1246                 SSL_CTX_set_srp_cb_arg(ctx,&srp_arg);
1247                 SSL_CTX_set_srp_client_pwd_callback(ctx, ssl_give_srp_client_pwd_cb);
1248                 SSL_CTX_set_srp_strength(ctx, srp_arg.strength);
1249                 if (c_msg || c_debug || srp_arg.amp == 0)
1250                         SSL_CTX_set_srp_verify_param_callback(ctx, ssl_srp_verify_param_cb);
1251                 }
1252
1253 #endif
1254         if (c_proof_debug)
1255                 SSL_CTX_set_tlsext_authz_server_audit_proof_cb(ctx,
1256                                                                audit_proof_cb);
1257 #endif
1258
1259         con=SSL_new(ctx);
1260         if (sess_in)
1261                 {
1262                 SSL_SESSION *sess;
1263                 BIO *stmp = BIO_new_file(sess_in, "r");
1264                 if (!stmp)
1265                         {
1266                         BIO_printf(bio_err, "Can't open session file %s\n",
1267                                                 sess_in);
1268                         ERR_print_errors(bio_err);
1269                         goto end;
1270                         }
1271                 sess = PEM_read_bio_SSL_SESSION(stmp, NULL, 0, NULL);
1272                 BIO_free(stmp);
1273                 if (!sess)
1274                         {
1275                         BIO_printf(bio_err, "Can't open session file %s\n",
1276                                                 sess_in);
1277                         ERR_print_errors(bio_err);
1278                         goto end;
1279                         }
1280                 SSL_set_session(con, sess);
1281                 SSL_SESSION_free(sess);
1282                 }
1283 #ifndef OPENSSL_NO_TLSEXT
1284         if (servername != NULL)
1285                 {
1286                 if (!SSL_set_tlsext_host_name(con,servername))
1287                         {
1288                         BIO_printf(bio_err,"Unable to set TLS servername extension.\n");
1289                         ERR_print_errors(bio_err);
1290                         goto end;
1291                         }
1292                 }
1293 #endif
1294 #ifndef OPENSSL_NO_KRB5
1295         if (con  &&  (kctx = kssl_ctx_new()) != NULL)
1296                 {
1297                 SSL_set0_kssl_ctx(con, kctx);
1298                 kssl_ctx_setstring(kctx, KSSL_SERVER, host);
1299                 }
1300 #endif  /* OPENSSL_NO_KRB5  */
1301 /*      SSL_set_cipher_list(con,"RC4-MD5"); */
1302 #if 0
1303 #ifdef TLSEXT_TYPE_opaque_prf_input
1304         SSL_set_tlsext_opaque_prf_input(con, "Test client", 11);
1305 #endif
1306 #endif
1307
1308 re_start:
1309
1310         if (init_client(&s,host,port,socket_type) == 0)
1311                 {
1312                 BIO_printf(bio_err,"connect:errno=%d\n",get_last_socket_error());
1313                 SHUTDOWN(s);
1314                 goto end;
1315                 }
1316         BIO_printf(bio_c_out,"CONNECTED(%08X)\n",s);
1317
1318 #ifdef FIONBIO
1319         if (c_nbio)
1320                 {
1321                 unsigned long l=1;
1322                 BIO_printf(bio_c_out,"turning on non blocking io\n");
1323                 if (BIO_socket_ioctl(s,FIONBIO,&l) < 0)
1324                         {
1325                         ERR_print_errors(bio_err);
1326                         goto end;
1327                         }
1328                 }
1329 #endif                                              
1330         if (c_Pause & 0x01) SSL_set_debug(con, 1);
1331
1332         if ( SSL_version(con) == DTLS1_VERSION)
1333                 {
1334
1335                 sbio=BIO_new_dgram(s,BIO_NOCLOSE);
1336                 if (getsockname(s, &peer, (void *)&peerlen) < 0)
1337                         {
1338                         BIO_printf(bio_err, "getsockname:errno=%d\n",
1339                                 get_last_socket_error());
1340                         SHUTDOWN(s);
1341                         goto end;
1342                         }
1343
1344                 (void)BIO_ctrl_set_connected(sbio, 1, &peer);
1345
1346                 if (enable_timeouts)
1347                         {
1348                         timeout.tv_sec = 0;
1349                         timeout.tv_usec = DGRAM_RCV_TIMEOUT;
1350                         BIO_ctrl(sbio, BIO_CTRL_DGRAM_SET_RECV_TIMEOUT, 0, &timeout);
1351                         
1352                         timeout.tv_sec = 0;
1353                         timeout.tv_usec = DGRAM_SND_TIMEOUT;
1354                         BIO_ctrl(sbio, BIO_CTRL_DGRAM_SET_SEND_TIMEOUT, 0, &timeout);
1355                         }
1356
1357                 if (socket_mtu > 28)
1358                         {
1359                         SSL_set_options(con, SSL_OP_NO_QUERY_MTU);
1360                         SSL_set_mtu(con, socket_mtu - 28);
1361                         }
1362                 else
1363                         /* want to do MTU discovery */
1364                         BIO_ctrl(sbio, BIO_CTRL_DGRAM_MTU_DISCOVER, 0, NULL);
1365                 }
1366         else
1367                 sbio=BIO_new_socket(s,BIO_NOCLOSE);
1368
1369         if (nbio_test)
1370                 {
1371                 BIO *test;
1372
1373                 test=BIO_new(BIO_f_nbio_test());
1374                 sbio=BIO_push(test,sbio);
1375                 }
1376
1377         if (c_debug)
1378                 {
1379                 SSL_set_debug(con, 1);
1380                 BIO_set_callback(sbio,bio_dump_callback);
1381                 BIO_set_callback_arg(sbio,(char *)bio_c_out);
1382                 }
1383         if (c_msg)
1384                 {
1385 #ifndef OPENSSL_NO_SSL_TRACE
1386                 if (c_msg == 2)
1387                         SSL_set_msg_callback(con, SSL_trace);
1388                 else
1389 #endif
1390                         SSL_set_msg_callback(con, msg_cb);
1391                 SSL_set_msg_callback_arg(con, bio_c_msg ? bio_c_msg : bio_c_out);
1392                 }
1393 #ifndef OPENSSL_NO_TLSEXT
1394         if (c_tlsextdebug)
1395                 {
1396                 SSL_set_tlsext_debug_callback(con, tlsext_cb);
1397                 SSL_set_tlsext_debug_arg(con, bio_c_out);
1398                 }
1399         if (c_status_req)
1400                 {
1401                 SSL_set_tlsext_status_type(con, TLSEXT_STATUSTYPE_ocsp);
1402                 SSL_CTX_set_tlsext_status_cb(ctx, ocsp_resp_cb);
1403                 SSL_CTX_set_tlsext_status_arg(ctx, bio_c_out);
1404 #if 0
1405 {
1406 STACK_OF(OCSP_RESPID) *ids = sk_OCSP_RESPID_new_null();
1407 OCSP_RESPID *id = OCSP_RESPID_new();
1408 id->value.byKey = ASN1_OCTET_STRING_new();
1409 id->type = V_OCSP_RESPID_KEY;
1410 ASN1_STRING_set(id->value.byKey, "Hello World", -1);
1411 sk_OCSP_RESPID_push(ids, id);
1412 SSL_set_tlsext_status_ids(con, ids);
1413 }
1414 #endif
1415                 }
1416 #endif
1417 #ifndef OPENSSL_NO_JPAKE
1418         if (jpake_secret)
1419                 jpake_client_auth(bio_c_out, sbio, jpake_secret);
1420 #endif
1421
1422         SSL_set_bio(con,sbio,sbio);
1423         SSL_set_connect_state(con);
1424
1425         /* ok, lets connect */
1426         width=SSL_get_fd(con)+1;
1427
1428         read_tty=1;
1429         write_tty=0;
1430         tty_on=0;
1431         read_ssl=1;
1432         write_ssl=1;
1433         
1434         cbuf_len=0;
1435         cbuf_off=0;
1436         sbuf_len=0;
1437         sbuf_off=0;
1438
1439         /* This is an ugly hack that does a lot of assumptions */
1440         /* We do have to handle multi-line responses which may come
1441            in a single packet or not. We therefore have to use
1442            BIO_gets() which does need a buffering BIO. So during
1443            the initial chitchat we do push a buffering BIO into the
1444            chain that is removed again later on to not disturb the
1445            rest of the s_client operation. */
1446         if (starttls_proto == PROTO_SMTP)
1447                 {
1448                 int foundit=0;
1449                 BIO *fbio = BIO_new(BIO_f_buffer());
1450                 BIO_push(fbio, sbio);
1451                 /* wait for multi-line response to end from SMTP */
1452                 do
1453                         {
1454                         mbuf_len = BIO_gets(fbio,mbuf,BUFSIZZ);
1455                         }
1456                 while (mbuf_len>3 && mbuf[3]=='-');
1457                 /* STARTTLS command requires EHLO... */
1458                 BIO_printf(fbio,"EHLO openssl.client.net\r\n");
1459                 (void)BIO_flush(fbio);
1460                 /* wait for multi-line response to end EHLO SMTP response */
1461                 do
1462                         {
1463                         mbuf_len = BIO_gets(fbio,mbuf,BUFSIZZ);
1464                         if (strstr(mbuf,"STARTTLS"))
1465                                 foundit=1;
1466                         }
1467                 while (mbuf_len>3 && mbuf[3]=='-');
1468                 (void)BIO_flush(fbio);
1469                 BIO_pop(fbio);
1470                 BIO_free(fbio);
1471                 if (!foundit)
1472                         BIO_printf(bio_err,
1473                                    "didn't found starttls in server response,"
1474                                    " try anyway...\n");
1475                 BIO_printf(sbio,"STARTTLS\r\n");
1476                 BIO_read(sbio,sbuf,BUFSIZZ);
1477                 }
1478         else if (starttls_proto == PROTO_POP3)
1479                 {
1480                 BIO_read(sbio,mbuf,BUFSIZZ);
1481                 BIO_printf(sbio,"STLS\r\n");
1482                 BIO_read(sbio,sbuf,BUFSIZZ);
1483                 }
1484         else if (starttls_proto == PROTO_IMAP)
1485                 {
1486                 int foundit=0;
1487                 BIO *fbio = BIO_new(BIO_f_buffer());
1488                 BIO_push(fbio, sbio);
1489                 BIO_gets(fbio,mbuf,BUFSIZZ);
1490                 /* STARTTLS command requires CAPABILITY... */
1491                 BIO_printf(fbio,". CAPABILITY\r\n");
1492                 (void)BIO_flush(fbio);
1493                 /* wait for multi-line CAPABILITY response */
1494                 do
1495                         {
1496                         mbuf_len = BIO_gets(fbio,mbuf,BUFSIZZ);
1497                         if (strstr(mbuf,"STARTTLS"))
1498                                 foundit=1;
1499                         }
1500                 while (mbuf_len>3 && mbuf[0]!='.');
1501                 (void)BIO_flush(fbio);
1502                 BIO_pop(fbio);
1503                 BIO_free(fbio);
1504                 if (!foundit)
1505                         BIO_printf(bio_err,
1506                                    "didn't found STARTTLS in server response,"
1507                                    " try anyway...\n");
1508                 BIO_printf(sbio,". STARTTLS\r\n");
1509                 BIO_read(sbio,sbuf,BUFSIZZ);
1510                 }
1511         else if (starttls_proto == PROTO_FTP)
1512                 {
1513                 BIO *fbio = BIO_new(BIO_f_buffer());
1514                 BIO_push(fbio, sbio);
1515                 /* wait for multi-line response to end from FTP */
1516                 do
1517                         {
1518                         mbuf_len = BIO_gets(fbio,mbuf,BUFSIZZ);
1519                         }
1520                 while (mbuf_len>3 && mbuf[3]=='-');
1521                 (void)BIO_flush(fbio);
1522                 BIO_pop(fbio);
1523                 BIO_free(fbio);
1524                 BIO_printf(sbio,"AUTH TLS\r\n");
1525                 BIO_read(sbio,sbuf,BUFSIZZ);
1526                 }
1527         if (starttls_proto == PROTO_XMPP)
1528                 {
1529                 int seen = 0;
1530                 BIO_printf(sbio,"<stream:stream "
1531                     "xmlns:stream='http://etherx.jabber.org/streams' "
1532                     "xmlns='jabber:client' to='%s' version='1.0'>", host);
1533                 seen = BIO_read(sbio,mbuf,BUFSIZZ);
1534                 mbuf[seen] = 0;
1535                 while (!strstr(mbuf, "<starttls xmlns='urn:ietf:params:xml:ns:xmpp-tls'"))
1536                         {
1537                         if (strstr(mbuf, "/stream:features>"))
1538                                 goto shut;
1539                         seen = BIO_read(sbio,mbuf,BUFSIZZ);
1540                         mbuf[seen] = 0;
1541                         }
1542                 BIO_printf(sbio, "<starttls xmlns='urn:ietf:params:xml:ns:xmpp-tls'/>");
1543                 seen = BIO_read(sbio,sbuf,BUFSIZZ);
1544                 sbuf[seen] = 0;
1545                 if (!strstr(sbuf, "<proceed"))
1546                         goto shut;
1547                 mbuf[0] = 0;
1548                 }
1549
1550         for (;;)
1551                 {
1552                 FD_ZERO(&readfds);
1553                 FD_ZERO(&writefds);
1554
1555                 if ((SSL_version(con) == DTLS1_VERSION) &&
1556                         DTLSv1_get_timeout(con, &timeout))
1557                         timeoutp = &timeout;
1558                 else
1559                         timeoutp = NULL;
1560
1561                 if (SSL_in_init(con) && !SSL_total_renegotiations(con))
1562                         {
1563                         in_init=1;
1564                         tty_on=0;
1565                         }
1566                 else
1567                         {
1568                         tty_on=1;
1569                         if (in_init)
1570                                 {
1571                                 in_init=0;
1572 #if 0 /* This test doesn't really work as intended (needs to be fixed) */
1573 #ifndef OPENSSL_NO_TLSEXT
1574                                 if (servername != NULL && !SSL_session_reused(con))
1575                                         {
1576                                         BIO_printf(bio_c_out,"Server did %sacknowledge servername extension.\n",tlsextcbp.ack?"":"not ");
1577                                         }
1578 #endif
1579 #endif
1580                                 if (sess_out)
1581                                         {
1582                                         BIO *stmp = BIO_new_file(sess_out, "w");
1583                                         if (stmp)
1584                                                 {
1585                                                 PEM_write_bio_SSL_SESSION(stmp, SSL_get_session(con));
1586                                                 BIO_free(stmp);
1587                                                 }
1588                                         else 
1589                                                 BIO_printf(bio_err, "Error writing session file %s\n", sess_out);
1590                                         }
1591                                 print_stuff(bio_c_out,con,full_log);
1592                                 if (full_log > 0) full_log--;
1593
1594                                 if (starttls_proto)
1595                                         {
1596                                         BIO_printf(bio_err,"%s",mbuf);
1597                                         /* We don't need to know any more */
1598                                         starttls_proto = PROTO_OFF;
1599                                         }
1600
1601                                 if (reconnect)
1602                                         {
1603                                         reconnect--;
1604                                         BIO_printf(bio_c_out,"drop connection and then reconnect\n");
1605                                         SSL_shutdown(con);
1606                                         SSL_set_connect_state(con);
1607                                         SHUTDOWN(SSL_get_fd(con));
1608                                         goto re_start;
1609                                         }
1610                                 }
1611                         }
1612
1613                 ssl_pending = read_ssl && SSL_pending(con);
1614
1615                 if (!ssl_pending)
1616                         {
1617 #if !defined(OPENSSL_SYS_WINDOWS) && !defined(OPENSSL_SYS_MSDOS) && !defined(OPENSSL_SYS_NETWARE) && !defined (OPENSSL_SYS_BEOS_R5)
1618                         if (tty_on)
1619                                 {
1620                                 if (read_tty)  openssl_fdset(fileno(stdin),&readfds);
1621                                 if (write_tty) openssl_fdset(fileno(stdout),&writefds);
1622                                 }
1623                         if (read_ssl)
1624                                 openssl_fdset(SSL_get_fd(con),&readfds);
1625                         if (write_ssl)
1626                                 openssl_fdset(SSL_get_fd(con),&writefds);
1627 #else
1628                         if(!tty_on || !write_tty) {
1629                                 if (read_ssl)
1630                                         openssl_fdset(SSL_get_fd(con),&readfds);
1631                                 if (write_ssl)
1632                                         openssl_fdset(SSL_get_fd(con),&writefds);
1633                         }
1634 #endif
1635 /*                      printf("mode tty(%d %d%d) ssl(%d%d)\n",
1636                                 tty_on,read_tty,write_tty,read_ssl,write_ssl);*/
1637
1638                         /* Note: under VMS with SOCKETSHR the second parameter
1639                          * is currently of type (int *) whereas under other
1640                          * systems it is (void *) if you don't have a cast it
1641                          * will choke the compiler: if you do have a cast then
1642                          * you can either go for (int *) or (void *).
1643                          */
1644 #if defined(OPENSSL_SYS_WINDOWS) || defined(OPENSSL_SYS_MSDOS)
1645                         /* Under Windows/DOS we make the assumption that we can
1646                          * always write to the tty: therefore if we need to
1647                          * write to the tty we just fall through. Otherwise
1648                          * we timeout the select every second and see if there
1649                          * are any keypresses. Note: this is a hack, in a proper
1650                          * Windows application we wouldn't do this.
1651                          */
1652                         i=0;
1653                         if(!write_tty) {
1654                                 if(read_tty) {
1655                                         tv.tv_sec = 1;
1656                                         tv.tv_usec = 0;
1657                                         i=select(width,(void *)&readfds,(void *)&writefds,
1658                                                  NULL,&tv);
1659 #if defined(OPENSSL_SYS_WINCE) || defined(OPENSSL_SYS_MSDOS)
1660                                         if(!i && (!_kbhit() || !read_tty) ) continue;
1661 #else
1662                                         if(!i && (!((_kbhit()) || (WAIT_OBJECT_0 == WaitForSingleObject(GetStdHandle(STD_INPUT_HANDLE), 0))) || !read_tty) ) continue;
1663 #endif
1664                                 } else  i=select(width,(void *)&readfds,(void *)&writefds,
1665                                          NULL,timeoutp);
1666                         }
1667 #elif defined(OPENSSL_SYS_NETWARE)
1668                         if(!write_tty) {
1669                                 if(read_tty) {
1670                                         tv.tv_sec = 1;
1671                                         tv.tv_usec = 0;
1672                                         i=select(width,(void *)&readfds,(void *)&writefds,
1673                                                 NULL,&tv);
1674                                 } else  i=select(width,(void *)&readfds,(void *)&writefds,
1675                                         NULL,timeoutp);
1676                         }
1677 #elif defined(OPENSSL_SYS_BEOS_R5)
1678                         /* Under BeOS-R5 the situation is similar to DOS */
1679                         i=0;
1680                         stdin_set = 0;
1681                         (void)fcntl(fileno(stdin), F_SETFL, O_NONBLOCK);
1682                         if(!write_tty) {
1683                                 if(read_tty) {
1684                                         tv.tv_sec = 1;
1685                                         tv.tv_usec = 0;
1686                                         i=select(width,(void *)&readfds,(void *)&writefds,
1687                                                  NULL,&tv);
1688                                         if (read(fileno(stdin), sbuf, 0) >= 0)
1689                                                 stdin_set = 1;
1690                                         if (!i && (stdin_set != 1 || !read_tty))
1691                                                 continue;
1692                                 } else  i=select(width,(void *)&readfds,(void *)&writefds,
1693                                          NULL,timeoutp);
1694                         }
1695                         (void)fcntl(fileno(stdin), F_SETFL, 0);
1696 #else
1697                         i=select(width,(void *)&readfds,(void *)&writefds,
1698                                  NULL,timeoutp);
1699 #endif
1700                         if ( i < 0)
1701                                 {
1702                                 BIO_printf(bio_err,"bad select %d\n",
1703                                 get_last_socket_error());
1704                                 goto shut;
1705                                 /* goto end; */
1706                                 }
1707                         }
1708
1709                 if ((SSL_version(con) == DTLS1_VERSION) && DTLSv1_handle_timeout(con) > 0)
1710                         {
1711                         BIO_printf(bio_err,"TIMEOUT occured\n");
1712                         }
1713
1714                 if (!ssl_pending && FD_ISSET(SSL_get_fd(con),&writefds))
1715                         {
1716                         k=SSL_write(con,&(cbuf[cbuf_off]),
1717                                 (unsigned int)cbuf_len);
1718                         switch (SSL_get_error(con,k))
1719                                 {
1720                         case SSL_ERROR_NONE:
1721                                 cbuf_off+=k;
1722                                 cbuf_len-=k;
1723                                 if (k <= 0) goto end;
1724                                 /* we have done a  write(con,NULL,0); */
1725                                 if (cbuf_len <= 0)
1726                                         {
1727                                         read_tty=1;
1728                                         write_ssl=0;
1729                                         }
1730                                 else /* if (cbuf_len > 0) */
1731                                         {
1732                                         read_tty=0;
1733                                         write_ssl=1;
1734                                         }
1735                                 break;
1736                         case SSL_ERROR_WANT_WRITE:
1737                                 BIO_printf(bio_c_out,"write W BLOCK\n");
1738                                 write_ssl=1;
1739                                 read_tty=0;
1740                                 break;
1741                         case SSL_ERROR_WANT_READ:
1742                                 BIO_printf(bio_c_out,"write R BLOCK\n");
1743                                 write_tty=0;
1744                                 read_ssl=1;
1745                                 write_ssl=0;
1746                                 break;
1747                         case SSL_ERROR_WANT_X509_LOOKUP:
1748                                 BIO_printf(bio_c_out,"write X BLOCK\n");
1749                                 break;
1750                         case SSL_ERROR_ZERO_RETURN:
1751                                 if (cbuf_len != 0)
1752                                         {
1753                                         BIO_printf(bio_c_out,"shutdown\n");
1754                                         ret = 0;
1755                                         goto shut;
1756                                         }
1757                                 else
1758                                         {
1759                                         read_tty=1;
1760                                         write_ssl=0;
1761                                         break;
1762                                         }
1763                                 
1764                         case SSL_ERROR_SYSCALL:
1765                                 if ((k != 0) || (cbuf_len != 0))
1766                                         {
1767                                         BIO_printf(bio_err,"write:errno=%d\n",
1768                                                 get_last_socket_error());
1769                                         goto shut;
1770                                         }
1771                                 else
1772                                         {
1773                                         read_tty=1;
1774                                         write_ssl=0;
1775                                         }
1776                                 break;
1777                         case SSL_ERROR_SSL:
1778                                 ERR_print_errors(bio_err);
1779                                 goto shut;
1780                                 }
1781                         }
1782 #if defined(OPENSSL_SYS_WINDOWS) || defined(OPENSSL_SYS_MSDOS) || defined(OPENSSL_SYS_NETWARE) || defined(OPENSSL_SYS_BEOS_R5)
1783                 /* Assume Windows/DOS/BeOS can always write */
1784                 else if (!ssl_pending && write_tty)
1785 #else
1786                 else if (!ssl_pending && FD_ISSET(fileno(stdout),&writefds))
1787 #endif
1788                         {
1789 #ifdef CHARSET_EBCDIC
1790                         ascii2ebcdic(&(sbuf[sbuf_off]),&(sbuf[sbuf_off]),sbuf_len);
1791 #endif
1792                         i=raw_write_stdout(&(sbuf[sbuf_off]),sbuf_len);
1793
1794                         if (i <= 0)
1795                                 {
1796                                 BIO_printf(bio_c_out,"DONE\n");
1797                                 ret = 0;
1798                                 goto shut;
1799                                 /* goto end; */
1800                                 }
1801
1802                         sbuf_len-=i;;
1803                         sbuf_off+=i;
1804                         if (sbuf_len <= 0)
1805                                 {
1806                                 read_ssl=1;
1807                                 write_tty=0;
1808                                 }
1809                         }
1810                 else if (ssl_pending || FD_ISSET(SSL_get_fd(con),&readfds))
1811                         {
1812 #ifdef RENEG
1813 { static int iiii; if (++iiii == 52) { SSL_renegotiate(con); iiii=0; } }
1814 #endif
1815 #if 1
1816                         k=SSL_read(con,sbuf,1024 /* BUFSIZZ */ );
1817 #else
1818 /* Demo for pending and peek :-) */
1819                         k=SSL_read(con,sbuf,16);
1820 { char zbuf[10240]; 
1821 printf("read=%d pending=%d peek=%d\n",k,SSL_pending(con),SSL_peek(con,zbuf,10240));
1822 }
1823 #endif
1824
1825                         switch (SSL_get_error(con,k))
1826                                 {
1827                         case SSL_ERROR_NONE:
1828                                 if (k <= 0)
1829                                         goto end;
1830                                 sbuf_off=0;
1831                                 sbuf_len=k;
1832
1833                                 read_ssl=0;
1834                                 write_tty=1;
1835                                 break;
1836                         case SSL_ERROR_WANT_WRITE:
1837                                 BIO_printf(bio_c_out,"read W BLOCK\n");
1838                                 write_ssl=1;
1839                                 read_tty=0;
1840                                 break;
1841                         case SSL_ERROR_WANT_READ:
1842                                 BIO_printf(bio_c_out,"read R BLOCK\n");
1843                                 write_tty=0;
1844                                 read_ssl=1;
1845                                 if ((read_tty == 0) && (write_ssl == 0))
1846                                         write_ssl=1;
1847                                 break;
1848                         case SSL_ERROR_WANT_X509_LOOKUP:
1849                                 BIO_printf(bio_c_out,"read X BLOCK\n");
1850                                 break;
1851                         case SSL_ERROR_SYSCALL:
1852                                 ret=get_last_socket_error();
1853                                 BIO_printf(bio_err,"read:errno=%d\n",ret);
1854                                 goto shut;
1855                         case SSL_ERROR_ZERO_RETURN:
1856                                 BIO_printf(bio_c_out,"closed\n");
1857                                 ret=0;
1858                                 goto shut;
1859                         case SSL_ERROR_SSL:
1860                                 ERR_print_errors(bio_err);
1861                                 goto shut;
1862                                 /* break; */
1863                                 }
1864                         }
1865
1866 #if defined(OPENSSL_SYS_WINDOWS) || defined(OPENSSL_SYS_MSDOS)
1867 #if defined(OPENSSL_SYS_WINCE) || defined(OPENSSL_SYS_MSDOS)
1868                 else if (_kbhit())
1869 #else
1870                 else if ((_kbhit()) || (WAIT_OBJECT_0 == WaitForSingleObject(GetStdHandle(STD_INPUT_HANDLE), 0)))
1871 #endif
1872 #elif defined (OPENSSL_SYS_NETWARE)
1873                 else if (_kbhit())
1874 #elif defined(OPENSSL_SYS_BEOS_R5)
1875                 else if (stdin_set)
1876 #else
1877                 else if (FD_ISSET(fileno(stdin),&readfds))
1878 #endif
1879                         {
1880                         if (crlf)
1881                                 {
1882                                 int j, lf_num;
1883
1884                                 i=raw_read_stdin(cbuf,BUFSIZZ/2);
1885                                 lf_num = 0;
1886                                 /* both loops are skipped when i <= 0 */
1887                                 for (j = 0; j < i; j++)
1888                                         if (cbuf[j] == '\n')
1889                                                 lf_num++;
1890                                 for (j = i-1; j >= 0; j--)
1891                                         {
1892                                         cbuf[j+lf_num] = cbuf[j];
1893                                         if (cbuf[j] == '\n')
1894                                                 {
1895                                                 lf_num--;
1896                                                 i++;
1897                                                 cbuf[j+lf_num] = '\r';
1898                                                 }
1899                                         }
1900                                 assert(lf_num == 0);
1901                                 }
1902                         else
1903                                 i=raw_read_stdin(cbuf,BUFSIZZ);
1904
1905                         if ((!c_ign_eof) && ((i <= 0) || (cbuf[0] == 'Q')))
1906                                 {
1907                                 BIO_printf(bio_err,"DONE\n");
1908                                 ret=0;
1909                                 goto shut;
1910                                 }
1911
1912                         if ((!c_ign_eof) && (cbuf[0] == 'R'))
1913                                 {
1914                                 BIO_printf(bio_err,"RENEGOTIATING\n");
1915                                 SSL_renegotiate(con);
1916                                 cbuf_len=0;
1917                                 }
1918 #ifndef OPENSSL_NO_HEARTBEATS
1919                         else if ((!c_ign_eof) && (cbuf[0] == 'B'))
1920                                 {
1921                                 BIO_printf(bio_err,"HEARTBEATING\n");
1922                                 SSL_heartbeat(con);
1923                                 cbuf_len=0;
1924                                 }
1925 #endif
1926                         else
1927                                 {
1928                                 cbuf_len=i;
1929                                 cbuf_off=0;
1930 #ifdef CHARSET_EBCDIC
1931                                 ebcdic2ascii(cbuf, cbuf, i);
1932 #endif
1933                                 }
1934
1935                         write_ssl=1;
1936                         read_tty=0;
1937                         }
1938                 }
1939
1940         ret=0;
1941 shut:
1942         if (in_init)
1943                 print_stuff(bio_c_out,con,full_log);
1944         SSL_shutdown(con);
1945         SHUTDOWN(SSL_get_fd(con));
1946 end:
1947         if (con != NULL)
1948                 {
1949                 if (prexit != 0)
1950                         print_stuff(bio_c_out,con,1);
1951                 SSL_free(con);
1952                 }
1953         if (ctx != NULL) SSL_CTX_free(ctx);
1954         if (cert)
1955                 X509_free(cert);
1956         if (key)
1957                 EVP_PKEY_free(key);
1958         if (pass)
1959                 OPENSSL_free(pass);
1960         if (cbuf != NULL) { OPENSSL_cleanse(cbuf,BUFSIZZ); OPENSSL_free(cbuf); }
1961         if (sbuf != NULL) { OPENSSL_cleanse(sbuf,BUFSIZZ); OPENSSL_free(sbuf); }
1962         if (mbuf != NULL) { OPENSSL_cleanse(mbuf,BUFSIZZ); OPENSSL_free(mbuf); }
1963         if (bio_c_out != NULL)
1964                 {
1965                 BIO_free(bio_c_out);
1966                 bio_c_out=NULL;
1967                 }
1968         if (bio_c_msg != NULL)
1969                 {
1970                 BIO_free(bio_c_msg);
1971                 bio_c_msg=NULL;
1972                 }
1973         apps_shutdown();
1974         OPENSSL_EXIT(ret);
1975         }
1976
1977
1978 static void print_stuff(BIO *bio, SSL *s, int full)
1979         {
1980         X509 *peer=NULL;
1981         char *p;
1982         static const char *space="                ";
1983         char buf[BUFSIZ];
1984         STACK_OF(X509) *sk;
1985         STACK_OF(X509_NAME) *sk2;
1986         const SSL_CIPHER *c;
1987         X509_NAME *xn;
1988         int j,i;
1989 #ifndef OPENSSL_NO_COMP
1990         const COMP_METHOD *comp, *expansion;
1991 #endif
1992         unsigned char *exportedkeymat;
1993
1994         if (full)
1995                 {
1996                 int got_a_chain = 0;
1997
1998                 sk=SSL_get_peer_cert_chain(s);
1999                 if (sk != NULL)
2000                         {
2001                         got_a_chain = 1; /* we don't have it for SSL2 (yet) */
2002
2003                         BIO_printf(bio,"---\nCertificate chain\n");
2004                         for (i=0; i<sk_X509_num(sk); i++)
2005                                 {
2006                                 X509_NAME_oneline(X509_get_subject_name(
2007                                         sk_X509_value(sk,i)),buf,sizeof buf);
2008                                 BIO_printf(bio,"%2d s:%s\n",i,buf);
2009                                 X509_NAME_oneline(X509_get_issuer_name(
2010                                         sk_X509_value(sk,i)),buf,sizeof buf);
2011                                 BIO_printf(bio,"   i:%s\n",buf);
2012                                 if (c_showcerts)
2013                                         PEM_write_bio_X509(bio,sk_X509_value(sk,i));
2014                                 }
2015                         }
2016
2017                 BIO_printf(bio,"---\n");
2018                 peer=SSL_get_peer_certificate(s);
2019                 if (peer != NULL)
2020                         {
2021                         BIO_printf(bio,"Server certificate\n");
2022                         if (!(c_showcerts && got_a_chain)) /* Redundant if we showed the whole chain */
2023                                 PEM_write_bio_X509(bio,peer);
2024                         X509_NAME_oneline(X509_get_subject_name(peer),
2025                                 buf,sizeof buf);
2026                         BIO_printf(bio,"subject=%s\n",buf);
2027                         X509_NAME_oneline(X509_get_issuer_name(peer),
2028                                 buf,sizeof buf);
2029                         BIO_printf(bio,"issuer=%s\n",buf);
2030                         }
2031                 else
2032                         BIO_printf(bio,"no peer certificate available\n");
2033
2034                 sk2=SSL_get_client_CA_list(s);
2035                 if ((sk2 != NULL) && (sk_X509_NAME_num(sk2) > 0))
2036                         {
2037                         BIO_printf(bio,"---\nAcceptable client certificate CA names\n");
2038                         for (i=0; i<sk_X509_NAME_num(sk2); i++)
2039                                 {
2040                                 xn=sk_X509_NAME_value(sk2,i);
2041                                 X509_NAME_oneline(xn,buf,sizeof(buf));
2042                                 BIO_write(bio,buf,strlen(buf));
2043                                 BIO_write(bio,"\n",1);
2044                                 }
2045                         }
2046                 else
2047                         {
2048                         BIO_printf(bio,"---\nNo client certificate CA names sent\n");
2049                         }
2050                 p=SSL_get_shared_ciphers(s,buf,sizeof buf);
2051                 if (p != NULL)
2052                         {
2053                         /* This works only for SSL 2.  In later protocol
2054                          * versions, the client does not know what other
2055                          * ciphers (in addition to the one to be used
2056                          * in the current connection) the server supports. */
2057
2058                         BIO_printf(bio,"---\nCiphers common between both SSL endpoints:\n");
2059                         j=i=0;
2060                         while (*p)
2061                                 {
2062                                 if (*p == ':')
2063                                         {
2064                                         BIO_write(bio,space,15-j%25);
2065                                         i++;
2066                                         j=0;
2067                                         BIO_write(bio,((i%3)?" ":"\n"),1);
2068                                         }
2069                                 else
2070                                         {
2071                                         BIO_write(bio,p,1);
2072                                         j++;
2073                                         }
2074                                 p++;
2075                                 }
2076                         BIO_write(bio,"\n",1);
2077                         }
2078
2079                 ssl_print_sigalgs(bio, s, 1);
2080
2081                 BIO_printf(bio,"---\nSSL handshake has read %ld bytes and written %ld bytes\n",
2082                         BIO_number_read(SSL_get_rbio(s)),
2083                         BIO_number_written(SSL_get_wbio(s)));
2084                 }
2085         BIO_printf(bio,(SSL_cache_hit(s)?"---\nReused, ":"---\nNew, "));
2086         c=SSL_get_current_cipher(s);
2087         BIO_printf(bio,"%s, Cipher is %s\n",
2088                 SSL_CIPHER_get_version(c),
2089                 SSL_CIPHER_get_name(c));
2090         if (peer != NULL) {
2091                 EVP_PKEY *pktmp;
2092                 pktmp = X509_get_pubkey(peer);
2093                 BIO_printf(bio,"Server public key is %d bit\n",
2094                                                          EVP_PKEY_bits(pktmp));
2095                 EVP_PKEY_free(pktmp);
2096         }
2097         BIO_printf(bio, "Secure Renegotiation IS%s supported\n",
2098                         SSL_get_secure_renegotiation_support(s) ? "" : " NOT");
2099 #ifndef OPENSSL_NO_COMP
2100         comp=SSL_get_current_compression(s);
2101         expansion=SSL_get_current_expansion(s);
2102         BIO_printf(bio,"Compression: %s\n",
2103                 comp ? SSL_COMP_get_name(comp) : "NONE");
2104         BIO_printf(bio,"Expansion: %s\n",
2105                 expansion ? SSL_COMP_get_name(expansion) : "NONE");
2106 #endif
2107  
2108 #ifdef SSL_DEBUG
2109         {
2110         /* Print out local port of connection: useful for debugging */
2111         int sock;
2112         struct sockaddr_in ladd;
2113         socklen_t ladd_size = sizeof(ladd);
2114         sock = SSL_get_fd(s);
2115         getsockname(sock, (struct sockaddr *)&ladd, &ladd_size);
2116         BIO_printf(bio_c_out, "LOCAL PORT is %u\n", ntohs(ladd.sin_port));
2117         }
2118 #endif
2119
2120 #if !defined(OPENSSL_NO_TLSEXT) && !defined(OPENSSL_NO_NEXTPROTONEG)
2121         if (next_proto.status != -1) {
2122                 const unsigned char *proto;
2123                 unsigned int proto_len;
2124                 SSL_get0_next_proto_negotiated(s, &proto, &proto_len);
2125                 BIO_printf(bio, "Next protocol: (%d) ", next_proto.status);
2126                 BIO_write(bio, proto, proto_len);
2127                 BIO_write(bio, "\n", 1);
2128         }
2129 #endif
2130
2131         {
2132         SRTP_PROTECTION_PROFILE *srtp_profile=SSL_get_selected_srtp_profile(s);
2133  
2134         if(srtp_profile)
2135                 BIO_printf(bio,"SRTP Extension negotiated, profile=%s\n",
2136                            srtp_profile->name);
2137         }
2138  
2139         SSL_SESSION_print(bio,SSL_get_session(s));
2140         if (keymatexportlabel != NULL)
2141                 {
2142                 BIO_printf(bio, "Keying material exporter:\n");
2143                 BIO_printf(bio, "    Label: '%s'\n", keymatexportlabel);
2144                 BIO_printf(bio, "    Length: %i bytes\n", keymatexportlen);
2145                 exportedkeymat = OPENSSL_malloc(keymatexportlen);
2146                 if (exportedkeymat != NULL)
2147                         {
2148                         if (!SSL_export_keying_material(s, exportedkeymat,
2149                                                         keymatexportlen,
2150                                                         keymatexportlabel,
2151                                                         strlen(keymatexportlabel),
2152                                                         NULL, 0, 0))
2153                                 {
2154                                 BIO_printf(bio, "    Error\n");
2155                                 }
2156                         else
2157                                 {
2158                                 BIO_printf(bio, "    Keying material: ");
2159                                 for (i=0; i<keymatexportlen; i++)
2160                                         BIO_printf(bio, "%02X",
2161                                                    exportedkeymat[i]);
2162                                 BIO_printf(bio, "\n");
2163                                 }
2164                         OPENSSL_free(exportedkeymat);
2165                         }
2166                 }
2167         BIO_printf(bio,"---\n");
2168         if (peer != NULL)
2169                 X509_free(peer);
2170         /* flush, or debugging output gets mixed with http response */
2171         (void)BIO_flush(bio);
2172         }
2173
2174 #ifndef OPENSSL_NO_TLSEXT
2175
2176 static int ocsp_resp_cb(SSL *s, void *arg)
2177         {
2178         const unsigned char *p;
2179         int len;
2180         OCSP_RESPONSE *rsp;
2181         len = SSL_get_tlsext_status_ocsp_resp(s, &p);
2182         BIO_puts(arg, "OCSP response: ");
2183         if (!p)
2184                 {
2185                 BIO_puts(arg, "no response sent\n");
2186                 return 1;
2187                 }
2188         rsp = d2i_OCSP_RESPONSE(NULL, &p, len);
2189         if (!rsp)
2190                 {
2191                 BIO_puts(arg, "response parse error\n");
2192                 BIO_dump_indent(arg, (char *)p, len, 4);
2193                 return 0;
2194                 }
2195         BIO_puts(arg, "\n======================================\n");
2196         OCSP_RESPONSE_print(arg, rsp, 0);
2197         BIO_puts(arg, "======================================\n");
2198         OCSP_RESPONSE_free(rsp);
2199         return 1;
2200         }
2201
2202 static int audit_proof_cb(SSL *s, void *arg)
2203         {
2204         const unsigned char *proof;
2205         size_t proof_len;
2206         size_t i;
2207         SSL_SESSION *sess = SSL_get_session(s);
2208
2209         proof = SSL_SESSION_get_tlsext_authz_server_audit_proof(sess,
2210                                                                 &proof_len);
2211         if (proof != NULL)
2212                 {
2213                 BIO_printf(bio_c_out, "Audit proof: ");
2214                 for (i = 0; i < proof_len; ++i)
2215                         BIO_printf(bio_c_out, "%02X", proof[i]);
2216                 BIO_printf(bio_c_out, "\n");
2217                 }
2218         else
2219                 {
2220                 BIO_printf(bio_c_out, "No audit proof found.\n");
2221                 }
2222         return 1;
2223         }
2224 #endif