1 /*
2 * Copyright 1995-2021 The OpenSSL Project Authors. All Rights Reserved.
3 * Copyright 2005 Nokia. All rights reserved.
4 *
5 * Licensed under the OpenSSL license (the "License"). You may not use
6 * this file except in compliance with the License. You can obtain a copy
7 * in the file LICENSE in the source distribution or at
8 * https://www.openssl.org/source/license.html
9 */
10
11 #include "e_os.h"
12 #include <ctype.h>
13 #include <stdio.h>
14 #include <stdlib.h>
15 #include <string.h>
16 #include <errno.h>
17 #include <openssl/e_os2.h>
18
19 #ifndef OPENSSL_NO_SOCK
20
21 /*
22 * With IPv6, it looks like Digital has mixed up the proper order of
23 * recursive header file inclusion, resulting in the compiler complaining
24 * that u_int isn't defined, but only if _POSIX_C_SOURCE is defined, which is
25 * needed to have fileno() declared correctly... So let's define u_int
26 */
27 #if defined(OPENSSL_SYS_VMS_DECC) && !defined(__U_INT)
28 # define __U_INT
29 typedef unsigned int u_int;
30 #endif
31
32 #include "apps.h"
33 #include "progs.h"
34 #include <openssl/x509.h>
35 #include <openssl/ssl.h>
36 #include <openssl/err.h>
37 #include <openssl/pem.h>
38 #include <openssl/rand.h>
39 #include <openssl/ocsp.h>
40 #include <openssl/bn.h>
41 #include <openssl/async.h>
42 #ifndef OPENSSL_NO_SRP
43 # include <openssl/srp.h>
44 #endif
45 #ifndef OPENSSL_NO_CT
46 # include <openssl/ct.h>
47 #endif
48 #include "s_apps.h"
49 #include "timeouts.h"
50 #include "internal/sockets.h"
51
52 #if defined(__has_feature)
53 # if __has_feature(memory_sanitizer)
54 # include <sanitizer/msan_interface.h>
55 # endif
56 #endif
57
58 #undef BUFSIZZ
59 #define BUFSIZZ 1024*8
60 #define S_CLIENT_IRC_READ_TIMEOUT 8
61
62 static char *prog;
63 static int c_debug = 0;
64 static int c_showcerts = 0;
65 static char *keymatexportlabel = NULL;
66 static int keymatexportlen = 20;
67 static BIO *bio_c_out = NULL;
68 static int c_quiet = 0;
69 static char *sess_out = NULL;
70 static SSL_SESSION *psksess = NULL;
71
72 static void print_stuff(BIO *berr, SSL *con, int full);
73 #ifndef OPENSSL_NO_OCSP
74 static int ocsp_resp_cb(SSL *s, void *arg);
75 #endif
76 static int ldap_ExtendedResponse_parse(const char *buf, long rem);
77 static int is_dNS_name(const char *host);
78
79 static int saved_errno;
80
save_errno(void)81 static void save_errno(void)
82 {
83 saved_errno = errno;
84 errno = 0;
85 }
86
restore_errno(void)87 static int restore_errno(void)
88 {
89 int ret = errno;
90 errno = saved_errno;
91 return ret;
92 }
93
do_ssl_shutdown(SSL * ssl)94 static void do_ssl_shutdown(SSL *ssl)
95 {
96 int ret;
97
98 do {
99 /* We only do unidirectional shutdown */
100 ret = SSL_shutdown(ssl);
101 if (ret < 0) {
102 switch (SSL_get_error(ssl, ret)) {
103 case SSL_ERROR_WANT_READ:
104 case SSL_ERROR_WANT_WRITE:
105 case SSL_ERROR_WANT_ASYNC:
106 case SSL_ERROR_WANT_ASYNC_JOB:
107 /* We just do busy waiting. Nothing clever */
108 continue;
109 }
110 ret = 0;
111 }
112 } while (ret < 0);
113 }
114
115 /* Default PSK identity and key */
116 static char *psk_identity = "Client_identity";
117
118 #ifndef OPENSSL_NO_PSK
psk_client_cb(SSL * ssl,const char * hint,char * identity,unsigned int max_identity_len,unsigned char * psk,unsigned int max_psk_len)119 static unsigned int psk_client_cb(SSL *ssl, const char *hint, char *identity,
120 unsigned int max_identity_len,
121 unsigned char *psk,
122 unsigned int max_psk_len)
123 {
124 int ret;
125 long key_len;
126 unsigned char *key;
127
128 if (c_debug)
129 BIO_printf(bio_c_out, "psk_client_cb\n");
130 if (!hint) {
131 /* no ServerKeyExchange message */
132 if (c_debug)
133 BIO_printf(bio_c_out,
134 "NULL received PSK identity hint, continuing anyway\n");
135 } else if (c_debug) {
136 BIO_printf(bio_c_out, "Received PSK identity hint '%s'\n", hint);
137 }
138
139 /*
140 * lookup PSK identity and PSK key based on the given identity hint here
141 */
142 ret = BIO_snprintf(identity, max_identity_len, "%s", psk_identity);
143 if (ret < 0 || (unsigned int)ret > max_identity_len)
144 goto out_err;
145 if (c_debug)
146 BIO_printf(bio_c_out, "created identity '%s' len=%d\n", identity,
147 ret);
148
149 /* convert the PSK key to binary */
150 key = OPENSSL_hexstr2buf(psk_key, &key_len);
151 if (key == NULL) {
152 BIO_printf(bio_err, "Could not convert PSK key '%s' to buffer\n",
153 psk_key);
154 return 0;
155 }
156 if (max_psk_len > INT_MAX || key_len > (long)max_psk_len) {
157 BIO_printf(bio_err,
158 "psk buffer of callback is too small (%d) for key (%ld)\n",
159 max_psk_len, key_len);
160 OPENSSL_free(key);
161 return 0;
162 }
163
164 memcpy(psk, key, key_len);
165 OPENSSL_free(key);
166
167 if (c_debug)
168 BIO_printf(bio_c_out, "created PSK len=%ld\n", key_len);
169
170 return key_len;
171 out_err:
172 if (c_debug)
173 BIO_printf(bio_err, "Error in PSK client callback\n");
174 return 0;
175 }
176 #endif
177
178 const unsigned char tls13_aes128gcmsha256_id[] = { 0x13, 0x01 };
179 const unsigned char tls13_aes256gcmsha384_id[] = { 0x13, 0x02 };
180
psk_use_session_cb(SSL * s,const EVP_MD * md,const unsigned char ** id,size_t * idlen,SSL_SESSION ** sess)181 static int psk_use_session_cb(SSL *s, const EVP_MD *md,
182 const unsigned char **id, size_t *idlen,
183 SSL_SESSION **sess)
184 {
185 SSL_SESSION *usesess = NULL;
186 const SSL_CIPHER *cipher = NULL;
187
188 if (psksess != NULL) {
189 SSL_SESSION_up_ref(psksess);
190 usesess = psksess;
191 } else {
192 long key_len;
193 unsigned char *key = OPENSSL_hexstr2buf(psk_key, &key_len);
194
195 if (key == NULL) {
196 BIO_printf(bio_err, "Could not convert PSK key '%s' to buffer\n",
197 psk_key);
198 return 0;
199 }
200
201 /* We default to SHA-256 */
202 cipher = SSL_CIPHER_find(s, tls13_aes128gcmsha256_id);
203 if (cipher == NULL) {
204 BIO_printf(bio_err, "Error finding suitable ciphersuite\n");
205 OPENSSL_free(key);
206 return 0;
207 }
208
209 usesess = SSL_SESSION_new();
210 if (usesess == NULL
211 || !SSL_SESSION_set1_master_key(usesess, key, key_len)
212 || !SSL_SESSION_set_cipher(usesess, cipher)
213 || !SSL_SESSION_set_protocol_version(usesess, TLS1_3_VERSION)) {
214 OPENSSL_free(key);
215 goto err;
216 }
217 OPENSSL_free(key);
218 }
219
220 cipher = SSL_SESSION_get0_cipher(usesess);
221 if (cipher == NULL)
222 goto err;
223
224 if (md != NULL && SSL_CIPHER_get_handshake_digest(cipher) != md) {
225 /* PSK not usable, ignore it */
226 *id = NULL;
227 *idlen = 0;
228 *sess = NULL;
229 SSL_SESSION_free(usesess);
230 } else {
231 *sess = usesess;
232 *id = (unsigned char *)psk_identity;
233 *idlen = strlen(psk_identity);
234 }
235
236 return 1;
237
238 err:
239 SSL_SESSION_free(usesess);
240 return 0;
241 }
242
243 /* This is a context that we pass to callbacks */
244 typedef struct tlsextctx_st {
245 BIO *biodebug;
246 int ack;
247 } tlsextctx;
248
ssl_servername_cb(SSL * s,int * ad,void * arg)249 static int ssl_servername_cb(SSL *s, int *ad, void *arg)
250 {
251 tlsextctx *p = (tlsextctx *) arg;
252 const char *hn = SSL_get_servername(s, TLSEXT_NAMETYPE_host_name);
253 if (SSL_get_servername_type(s) != -1)
254 p->ack = !SSL_session_reused(s) && hn != NULL;
255 else
256 BIO_printf(bio_err, "Can't use SSL_get_servername\n");
257
258 return SSL_TLSEXT_ERR_OK;
259 }
260
261 #ifndef OPENSSL_NO_SRP
262
263 /* This is a context that we pass to all callbacks */
264 typedef struct srp_arg_st {
265 char *srppassin;
266 char *srplogin;
267 int msg; /* copy from c_msg */
268 int debug; /* copy from c_debug */
269 int amp; /* allow more groups */
270 int strength; /* minimal size for N */
271 } SRP_ARG;
272
273 # define SRP_NUMBER_ITERATIONS_FOR_PRIME 64
274
srp_Verify_N_and_g(const BIGNUM * N,const BIGNUM * g)275 static int srp_Verify_N_and_g(const BIGNUM *N, const BIGNUM *g)
276 {
277 BN_CTX *bn_ctx = BN_CTX_new();
278 BIGNUM *p = BN_new();
279 BIGNUM *r = BN_new();
280 int ret =
281 g != NULL && N != NULL && bn_ctx != NULL && BN_is_odd(N) &&
282 BN_is_prime_ex(N, SRP_NUMBER_ITERATIONS_FOR_PRIME, bn_ctx, NULL) == 1 &&
283 p != NULL && BN_rshift1(p, N) &&
284 /* p = (N-1)/2 */
285 BN_is_prime_ex(p, SRP_NUMBER_ITERATIONS_FOR_PRIME, bn_ctx, NULL) == 1 &&
286 r != NULL &&
287 /* verify g^((N-1)/2) == -1 (mod N) */
288 BN_mod_exp(r, g, p, N, bn_ctx) &&
289 BN_add_word(r, 1) && BN_cmp(r, N) == 0;
290
291 BN_free(r);
292 BN_free(p);
293 BN_CTX_free(bn_ctx);
294 return ret;
295 }
296
297 /*-
298 * This callback is used here for two purposes:
299 * - extended debugging
300 * - making some primality tests for unknown groups
301 * The callback is only called for a non default group.
302 *
303 * An application does not need the call back at all if
304 * only the standard groups are used. In real life situations,
305 * client and server already share well known groups,
306 * thus there is no need to verify them.
307 * Furthermore, in case that a server actually proposes a group that
308 * is not one of those defined in RFC 5054, it is more appropriate
309 * to add the group to a static list and then compare since
310 * primality tests are rather cpu consuming.
311 */
312
ssl_srp_verify_param_cb(SSL * s,void * arg)313 static int ssl_srp_verify_param_cb(SSL *s, void *arg)
314 {
315 SRP_ARG *srp_arg = (SRP_ARG *)arg;
316 BIGNUM *N = NULL, *g = NULL;
317
318 if (((N = SSL_get_srp_N(s)) == NULL) || ((g = SSL_get_srp_g(s)) == NULL))
319 return 0;
320 if (srp_arg->debug || srp_arg->msg || srp_arg->amp == 1) {
321 BIO_printf(bio_err, "SRP parameters:\n");
322 BIO_printf(bio_err, "\tN=");
323 BN_print(bio_err, N);
324 BIO_printf(bio_err, "\n\tg=");
325 BN_print(bio_err, g);
326 BIO_printf(bio_err, "\n");
327 }
328
329 if (SRP_check_known_gN_param(g, N))
330 return 1;
331
332 if (srp_arg->amp == 1) {
333 if (srp_arg->debug)
334 BIO_printf(bio_err,
335 "SRP param N and g are not known params, going to check deeper.\n");
336
337 /*
338 * The srp_moregroups is a real debugging feature. Implementors
339 * should rather add the value to the known ones. The minimal size
340 * has already been tested.
341 */
342 if (BN_num_bits(g) <= BN_BITS && srp_Verify_N_and_g(N, g))
343 return 1;
344 }
345 BIO_printf(bio_err, "SRP param N and g rejected.\n");
346 return 0;
347 }
348
349 # define PWD_STRLEN 1024
350
ssl_give_srp_client_pwd_cb(SSL * s,void * arg)351 static char *ssl_give_srp_client_pwd_cb(SSL *s, void *arg)
352 {
353 SRP_ARG *srp_arg = (SRP_ARG *)arg;
354 char *pass = app_malloc(PWD_STRLEN + 1, "SRP password buffer");
355 PW_CB_DATA cb_tmp;
356 int l;
357
358 cb_tmp.password = (char *)srp_arg->srppassin;
359 cb_tmp.prompt_info = "SRP user";
360 if ((l = password_callback(pass, PWD_STRLEN, 0, &cb_tmp)) < 0) {
361 BIO_printf(bio_err, "Can't read Password\n");
362 OPENSSL_free(pass);
363 return NULL;
364 }
365 *(pass + l) = '\0';
366
367 return pass;
368 }
369
370 #endif
371
372 #ifndef OPENSSL_NO_NEXTPROTONEG
373 /* This the context that we pass to next_proto_cb */
374 typedef struct tlsextnextprotoctx_st {
375 unsigned char *data;
376 size_t len;
377 int status;
378 } tlsextnextprotoctx;
379
380 static tlsextnextprotoctx next_proto;
381
next_proto_cb(SSL * s,unsigned char ** out,unsigned char * outlen,const unsigned char * in,unsigned int inlen,void * arg)382 static int next_proto_cb(SSL *s, unsigned char **out, unsigned char *outlen,
383 const unsigned char *in, unsigned int inlen,
384 void *arg)
385 {
386 tlsextnextprotoctx *ctx = arg;
387
388 if (!c_quiet) {
389 /* We can assume that |in| is syntactically valid. */
390 unsigned i;
391 BIO_printf(bio_c_out, "Protocols advertised by server: ");
392 for (i = 0; i < inlen;) {
393 if (i)
394 BIO_write(bio_c_out, ", ", 2);
395 BIO_write(bio_c_out, &in[i + 1], in[i]);
396 i += in[i] + 1;
397 }
398 BIO_write(bio_c_out, "\n", 1);
399 }
400
401 ctx->status =
402 SSL_select_next_proto(out, outlen, in, inlen, ctx->data, ctx->len);
403 return SSL_TLSEXT_ERR_OK;
404 }
405 #endif /* ndef OPENSSL_NO_NEXTPROTONEG */
406
serverinfo_cli_parse_cb(SSL * s,unsigned int ext_type,const unsigned char * in,size_t inlen,int * al,void * arg)407 static int serverinfo_cli_parse_cb(SSL *s, unsigned int ext_type,
408 const unsigned char *in, size_t inlen,
409 int *al, void *arg)
410 {
411 char pem_name[100];
412 unsigned char ext_buf[4 + 65536];
413
414 /* Reconstruct the type/len fields prior to extension data */
415 inlen &= 0xffff; /* for formal memcmpy correctness */
416 ext_buf[0] = (unsigned char)(ext_type >> 8);
417 ext_buf[1] = (unsigned char)(ext_type);
418 ext_buf[2] = (unsigned char)(inlen >> 8);
419 ext_buf[3] = (unsigned char)(inlen);
420 memcpy(ext_buf + 4, in, inlen);
421
422 BIO_snprintf(pem_name, sizeof(pem_name), "SERVERINFO FOR EXTENSION %d",
423 ext_type);
424 PEM_write_bio(bio_c_out, pem_name, "", ext_buf, 4 + inlen);
425 return 1;
426 }
427
428 /*
429 * Hex decoder that tolerates optional whitespace. Returns number of bytes
430 * produced, advances inptr to end of input string.
431 */
hexdecode(const char ** inptr,void * result)432 static ossl_ssize_t hexdecode(const char **inptr, void *result)
433 {
434 unsigned char **out = (unsigned char **)result;
435 const char *in = *inptr;
436 unsigned char *ret = app_malloc(strlen(in) / 2, "hexdecode");
437 unsigned char *cp = ret;
438 uint8_t byte;
439 int nibble = 0;
440
441 if (ret == NULL)
442 return -1;
443
444 for (byte = 0; *in; ++in) {
445 int x;
446
447 if (isspace(_UC(*in)))
448 continue;
449 x = OPENSSL_hexchar2int(*in);
450 if (x < 0) {
451 OPENSSL_free(ret);
452 return 0;
453 }
454 byte |= (char)x;
455 if ((nibble ^= 1) == 0) {
456 *cp++ = byte;
457 byte = 0;
458 } else {
459 byte <<= 4;
460 }
461 }
462 if (nibble != 0) {
463 OPENSSL_free(ret);
464 return 0;
465 }
466 *inptr = in;
467
468 return cp - (*out = ret);
469 }
470
471 /*
472 * Decode unsigned 0..255, returns 1 on success, <= 0 on failure. Advances
473 * inptr to next field skipping leading whitespace.
474 */
checked_uint8(const char ** inptr,void * out)475 static ossl_ssize_t checked_uint8(const char **inptr, void *out)
476 {
477 uint8_t *result = (uint8_t *)out;
478 const char *in = *inptr;
479 char *endp;
480 long v;
481 int e;
482
483 save_errno();
484 v = strtol(in, &endp, 10);
485 e = restore_errno();
486
487 if (((v == LONG_MIN || v == LONG_MAX) && e == ERANGE) ||
488 endp == in || !isspace(_UC(*endp)) ||
489 v != (*result = (uint8_t) v)) {
490 return -1;
491 }
492 for (in = endp; isspace(_UC(*in)); ++in)
493 continue;
494
495 *inptr = in;
496 return 1;
497 }
498
499 struct tlsa_field {
500 void *var;
501 const char *name;
502 ossl_ssize_t (*parser)(const char **, void *);
503 };
504
tlsa_import_rr(SSL * con,const char * rrdata)505 static int tlsa_import_rr(SSL *con, const char *rrdata)
506 {
507 /* Not necessary to re-init these values; the "parsers" do that. */
508 static uint8_t usage;
509 static uint8_t selector;
510 static uint8_t mtype;
511 static unsigned char *data;
512 static struct tlsa_field tlsa_fields[] = {
513 { &usage, "usage", checked_uint8 },
514 { &selector, "selector", checked_uint8 },
515 { &mtype, "mtype", checked_uint8 },
516 { &data, "data", hexdecode },
517 { NULL, }
518 };
519 struct tlsa_field *f;
520 int ret;
521 const char *cp = rrdata;
522 ossl_ssize_t len = 0;
523
524 for (f = tlsa_fields; f->var; ++f) {
525 /* Returns number of bytes produced, advances cp to next field */
526 if ((len = f->parser(&cp, f->var)) <= 0) {
527 BIO_printf(bio_err, "%s: warning: bad TLSA %s field in: %s\n",
528 prog, f->name, rrdata);
529 return 0;
530 }
531 }
532 /* The data field is last, so len is its length */
533 ret = SSL_dane_tlsa_add(con, usage, selector, mtype, data, len);
534 OPENSSL_free(data);
535
536 if (ret == 0) {
537 ERR_print_errors(bio_err);
538 BIO_printf(bio_err, "%s: warning: unusable TLSA rrdata: %s\n",
539 prog, rrdata);
540 return 0;
541 }
542 if (ret < 0) {
543 ERR_print_errors(bio_err);
544 BIO_printf(bio_err, "%s: warning: error loading TLSA rrdata: %s\n",
545 prog, rrdata);
546 return 0;
547 }
548 return ret;
549 }
550
tlsa_import_rrset(SSL * con,STACK_OF (OPENSSL_STRING)* rrset)551 static int tlsa_import_rrset(SSL *con, STACK_OF(OPENSSL_STRING) *rrset)
552 {
553 int num = sk_OPENSSL_STRING_num(rrset);
554 int count = 0;
555 int i;
556
557 for (i = 0; i < num; ++i) {
558 char *rrdata = sk_OPENSSL_STRING_value(rrset, i);
559 if (tlsa_import_rr(con, rrdata) > 0)
560 ++count;
561 }
562 return count > 0;
563 }
564
565 typedef enum OPTION_choice {
566 OPT_ERR = -1, OPT_EOF = 0, OPT_HELP,
567 OPT_4, OPT_6, OPT_HOST, OPT_PORT, OPT_CONNECT, OPT_BIND, OPT_UNIX,
568 OPT_XMPPHOST, OPT_VERIFY, OPT_NAMEOPT,
569 OPT_CERT, OPT_CRL, OPT_CRL_DOWNLOAD, OPT_SESS_OUT, OPT_SESS_IN,
570 OPT_CERTFORM, OPT_CRLFORM, OPT_VERIFY_RET_ERROR, OPT_VERIFY_QUIET,
571 OPT_BRIEF, OPT_PREXIT, OPT_CRLF, OPT_QUIET, OPT_NBIO,
572 OPT_SSL_CLIENT_ENGINE, OPT_IGN_EOF, OPT_NO_IGN_EOF,
573 OPT_DEBUG, OPT_TLSEXTDEBUG, OPT_STATUS, OPT_WDEBUG,
574 OPT_MSG, OPT_MSGFILE, OPT_ENGINE, OPT_TRACE, OPT_SECURITY_DEBUG,
575 OPT_SECURITY_DEBUG_VERBOSE, OPT_SHOWCERTS, OPT_NBIO_TEST, OPT_STATE,
576 OPT_PSK_IDENTITY, OPT_PSK, OPT_PSK_SESS,
577 #ifndef OPENSSL_NO_SRP
578 OPT_SRPUSER, OPT_SRPPASS, OPT_SRP_STRENGTH, OPT_SRP_LATEUSER,
579 OPT_SRP_MOREGROUPS,
580 #endif
581 OPT_SSL3, OPT_SSL_CONFIG,
582 OPT_TLS1_3, OPT_TLS1_2, OPT_TLS1_1, OPT_TLS1, OPT_DTLS, OPT_DTLS1,
583 OPT_DTLS1_2, OPT_SCTP, OPT_TIMEOUT, OPT_MTU, OPT_KEYFORM, OPT_PASS,
584 OPT_CERT_CHAIN, OPT_CAPATH, OPT_NOCAPATH, OPT_CHAINCAPATH, OPT_VERIFYCAPATH,
585 OPT_KEY, OPT_RECONNECT, OPT_BUILD_CHAIN, OPT_CAFILE, OPT_NOCAFILE,
586 OPT_CHAINCAFILE, OPT_VERIFYCAFILE, OPT_NEXTPROTONEG, OPT_ALPN,
587 OPT_SERVERINFO, OPT_STARTTLS, OPT_SERVERNAME, OPT_NOSERVERNAME, OPT_ASYNC,
588 OPT_USE_SRTP, OPT_KEYMATEXPORT, OPT_KEYMATEXPORTLEN, OPT_PROTOHOST,
589 OPT_MAXFRAGLEN, OPT_MAX_SEND_FRAG, OPT_SPLIT_SEND_FRAG, OPT_MAX_PIPELINES,
590 OPT_READ_BUF, OPT_KEYLOG_FILE, OPT_EARLY_DATA, OPT_REQCAFILE,
591 OPT_V_ENUM,
592 OPT_X_ENUM,
593 OPT_S_ENUM,
594 OPT_FALLBACKSCSV, OPT_NOCMDS, OPT_PROXY, OPT_DANE_TLSA_DOMAIN,
595 #ifndef OPENSSL_NO_CT
596 OPT_CT, OPT_NOCT, OPT_CTLOG_FILE,
597 #endif
598 OPT_DANE_TLSA_RRDATA, OPT_DANE_EE_NO_NAME,
599 OPT_ENABLE_PHA,
600 OPT_SCTP_LABEL_BUG,
601 OPT_R_ENUM
602 } OPTION_CHOICE;
603
604 const OPTIONS s_client_options[] = {
605 {"help", OPT_HELP, '-', "Display this summary"},
606 {"host", OPT_HOST, 's', "Use -connect instead"},
607 {"port", OPT_PORT, 'p', "Use -connect instead"},
608 {"connect", OPT_CONNECT, 's',
609 "TCP/IP where to connect (default is :" PORT ")"},
610 {"bind", OPT_BIND, 's', "bind local address for connection"},
611 {"proxy", OPT_PROXY, 's',
612 "Connect to via specified proxy to the real server"},
613 #ifdef AF_UNIX
614 {"unix", OPT_UNIX, 's', "Connect over the specified Unix-domain socket"},
615 #endif
616 {"4", OPT_4, '-', "Use IPv4 only"},
617 #ifdef AF_INET6
618 {"6", OPT_6, '-', "Use IPv6 only"},
619 #endif
620 {"verify", OPT_VERIFY, 'p', "Turn on peer certificate verification"},
621 {"cert", OPT_CERT, '<', "Certificate file to use, PEM format assumed"},
622 {"certform", OPT_CERTFORM, 'F',
623 "Certificate format (PEM or DER) PEM default"},
624 {"nameopt", OPT_NAMEOPT, 's', "Various certificate name options"},
625 {"key", OPT_KEY, 's', "Private key file to use, if not in -cert file"},
626 {"keyform", OPT_KEYFORM, 'E', "Key format (PEM, DER or engine) PEM default"},
627 {"pass", OPT_PASS, 's', "Private key file pass phrase source"},
628 {"CApath", OPT_CAPATH, '/', "PEM format directory of CA's"},
629 {"CAfile", OPT_CAFILE, '<', "PEM format file of CA's"},
630 {"no-CAfile", OPT_NOCAFILE, '-',
631 "Do not load the default certificates file"},
632 {"no-CApath", OPT_NOCAPATH, '-',
633 "Do not load certificates from the default certificates directory"},
634 {"requestCAfile", OPT_REQCAFILE, '<',
635 "PEM format file of CA names to send to the server"},
636 {"dane_tlsa_domain", OPT_DANE_TLSA_DOMAIN, 's', "DANE TLSA base domain"},
637 {"dane_tlsa_rrdata", OPT_DANE_TLSA_RRDATA, 's',
638 "DANE TLSA rrdata presentation form"},
639 {"dane_ee_no_namechecks", OPT_DANE_EE_NO_NAME, '-',
640 "Disable name checks when matching DANE-EE(3) TLSA records"},
641 {"reconnect", OPT_RECONNECT, '-',
642 "Drop and re-make the connection with the same Session-ID"},
643 {"showcerts", OPT_SHOWCERTS, '-',
644 "Show all certificates sent by the server"},
645 {"debug", OPT_DEBUG, '-', "Extra output"},
646 {"msg", OPT_MSG, '-', "Show protocol messages"},
647 {"msgfile", OPT_MSGFILE, '>',
648 "File to send output of -msg or -trace, instead of stdout"},
649 {"nbio_test", OPT_NBIO_TEST, '-', "More ssl protocol testing"},
650 {"state", OPT_STATE, '-', "Print the ssl states"},
651 {"crlf", OPT_CRLF, '-', "Convert LF from terminal into CRLF"},
652 {"quiet", OPT_QUIET, '-', "No s_client output"},
653 {"ign_eof", OPT_IGN_EOF, '-', "Ignore input eof (default when -quiet)"},
654 {"no_ign_eof", OPT_NO_IGN_EOF, '-', "Don't ignore input eof"},
655 {"starttls", OPT_STARTTLS, 's',
656 "Use the appropriate STARTTLS command before starting TLS"},
657 {"xmpphost", OPT_XMPPHOST, 's',
658 "Alias of -name option for \"-starttls xmpp[-server]\""},
659 OPT_R_OPTIONS,
660 {"sess_out", OPT_SESS_OUT, '>', "File to write SSL session to"},
661 {"sess_in", OPT_SESS_IN, '<', "File to read SSL session from"},
662 #ifndef OPENSSL_NO_SRTP
663 {"use_srtp", OPT_USE_SRTP, 's',
664 "Offer SRTP key management with a colon-separated profile list"},
665 #endif
666 {"keymatexport", OPT_KEYMATEXPORT, 's',
667 "Export keying material using label"},
668 {"keymatexportlen", OPT_KEYMATEXPORTLEN, 'p',
669 "Export len bytes of keying material (default 20)"},
670 {"maxfraglen", OPT_MAXFRAGLEN, 'p',
671 "Enable Maximum Fragment Length Negotiation (len values: 512, 1024, 2048 and 4096)"},
672 {"fallback_scsv", OPT_FALLBACKSCSV, '-', "Send the fallback SCSV"},
673 {"name", OPT_PROTOHOST, 's',
674 "Hostname to use for \"-starttls lmtp\", \"-starttls smtp\" or \"-starttls xmpp[-server]\""},
675 {"CRL", OPT_CRL, '<', "CRL file to use"},
676 {"crl_download", OPT_CRL_DOWNLOAD, '-', "Download CRL from distribution points"},
677 {"CRLform", OPT_CRLFORM, 'F', "CRL format (PEM or DER) PEM is default"},
678 {"verify_return_error", OPT_VERIFY_RET_ERROR, '-',
679 "Close connection on verification error"},
680 {"verify_quiet", OPT_VERIFY_QUIET, '-', "Restrict verify output to errors"},
681 {"brief", OPT_BRIEF, '-',
682 "Restrict output to brief summary of connection parameters"},
683 {"prexit", OPT_PREXIT, '-',
684 "Print session information when the program exits"},
685 {"security_debug", OPT_SECURITY_DEBUG, '-',
686 "Enable security debug messages"},
687 {"security_debug_verbose", OPT_SECURITY_DEBUG_VERBOSE, '-',
688 "Output more security debug output"},
689 {"cert_chain", OPT_CERT_CHAIN, '<',
690 "Certificate chain file (in PEM format)"},
691 {"chainCApath", OPT_CHAINCAPATH, '/',
692 "Use dir as certificate store path to build CA certificate chain"},
693 {"verifyCApath", OPT_VERIFYCAPATH, '/',
694 "Use dir as certificate store path to verify CA certificate"},
695 {"build_chain", OPT_BUILD_CHAIN, '-', "Build certificate chain"},
696 {"chainCAfile", OPT_CHAINCAFILE, '<',
697 "CA file for certificate chain (PEM format)"},
698 {"verifyCAfile", OPT_VERIFYCAFILE, '<',
699 "CA file for certificate verification (PEM format)"},
700 {"nocommands", OPT_NOCMDS, '-', "Do not use interactive command letters"},
701 {"servername", OPT_SERVERNAME, 's',
702 "Set TLS extension servername (SNI) in ClientHello (default)"},
703 {"noservername", OPT_NOSERVERNAME, '-',
704 "Do not send the server name (SNI) extension in the ClientHello"},
705 {"tlsextdebug", OPT_TLSEXTDEBUG, '-',
706 "Hex dump of all TLS extensions received"},
707 #ifndef OPENSSL_NO_OCSP
708 {"status", OPT_STATUS, '-', "Request certificate status from server"},
709 #endif
710 {"serverinfo", OPT_SERVERINFO, 's',
711 "types Send empty ClientHello extensions (comma-separated numbers)"},
712 {"alpn", OPT_ALPN, 's',
713 "Enable ALPN extension, considering named protocols supported (comma-separated list)"},
714 {"async", OPT_ASYNC, '-', "Support asynchronous operation"},
715 {"ssl_config", OPT_SSL_CONFIG, 's', "Use specified configuration file"},
716 {"max_send_frag", OPT_MAX_SEND_FRAG, 'p', "Maximum Size of send frames "},
717 {"split_send_frag", OPT_SPLIT_SEND_FRAG, 'p',
718 "Size used to split data for encrypt pipelines"},
719 {"max_pipelines", OPT_MAX_PIPELINES, 'p',
720 "Maximum number of encrypt/decrypt pipelines to be used"},
721 {"read_buf", OPT_READ_BUF, 'p',
722 "Default read buffer size to be used for connections"},
723 OPT_S_OPTIONS,
724 OPT_V_OPTIONS,
725 OPT_X_OPTIONS,
726 #ifndef OPENSSL_NO_SSL3
727 {"ssl3", OPT_SSL3, '-', "Just use SSLv3"},
728 #endif
729 #ifndef OPENSSL_NO_TLS1
730 {"tls1", OPT_TLS1, '-', "Just use TLSv1"},
731 #endif
732 #ifndef OPENSSL_NO_TLS1_1
733 {"tls1_1", OPT_TLS1_1, '-', "Just use TLSv1.1"},
734 #endif
735 #ifndef OPENSSL_NO_TLS1_2
736 {"tls1_2", OPT_TLS1_2, '-', "Just use TLSv1.2"},
737 #endif
738 #ifndef OPENSSL_NO_TLS1_3
739 {"tls1_3", OPT_TLS1_3, '-', "Just use TLSv1.3"},
740 #endif
741 #ifndef OPENSSL_NO_DTLS
742 {"dtls", OPT_DTLS, '-', "Use any version of DTLS"},
743 {"timeout", OPT_TIMEOUT, '-',
744 "Enable send/receive timeout on DTLS connections"},
745 {"mtu", OPT_MTU, 'p', "Set the link layer MTU"},
746 #endif
747 #ifndef OPENSSL_NO_DTLS1
748 {"dtls1", OPT_DTLS1, '-', "Just use DTLSv1"},
749 #endif
750 #ifndef OPENSSL_NO_DTLS1_2
751 {"dtls1_2", OPT_DTLS1_2, '-', "Just use DTLSv1.2"},
752 #endif
753 #ifndef OPENSSL_NO_SCTP
754 {"sctp", OPT_SCTP, '-', "Use SCTP"},
755 {"sctp_label_bug", OPT_SCTP_LABEL_BUG, '-', "Enable SCTP label length bug"},
756 #endif
757 #ifndef OPENSSL_NO_SSL_TRACE
758 {"trace", OPT_TRACE, '-', "Show trace output of protocol messages"},
759 #endif
760 #ifdef WATT32
761 {"wdebug", OPT_WDEBUG, '-', "WATT-32 tcp debugging"},
762 #endif
763 {"nbio", OPT_NBIO, '-', "Use non-blocking IO"},
764 {"psk_identity", OPT_PSK_IDENTITY, 's', "PSK identity"},
765 {"psk", OPT_PSK, 's', "PSK in hex (without 0x)"},
766 {"psk_session", OPT_PSK_SESS, '<', "File to read PSK SSL session from"},
767 #ifndef OPENSSL_NO_SRP
768 {"srpuser", OPT_SRPUSER, 's', "SRP authentication for 'user'"},
769 {"srppass", OPT_SRPPASS, 's', "Password for 'user'"},
770 {"srp_lateuser", OPT_SRP_LATEUSER, '-',
771 "SRP username into second ClientHello message"},
772 {"srp_moregroups", OPT_SRP_MOREGROUPS, '-',
773 "Tolerate other than the known g N values."},
774 {"srp_strength", OPT_SRP_STRENGTH, 'p', "Minimal length in bits for N"},
775 #endif
776 #ifndef OPENSSL_NO_NEXTPROTONEG
777 {"nextprotoneg", OPT_NEXTPROTONEG, 's',
778 "Enable NPN extension, considering named protocols supported (comma-separated list)"},
779 #endif
780 #ifndef OPENSSL_NO_ENGINE
781 {"engine", OPT_ENGINE, 's', "Use engine, possibly a hardware device"},
782 {"ssl_client_engine", OPT_SSL_CLIENT_ENGINE, 's',
783 "Specify engine to be used for client certificate operations"},
784 #endif
785 #ifndef OPENSSL_NO_CT
786 {"ct", OPT_CT, '-', "Request and parse SCTs (also enables OCSP stapling)"},
787 {"noct", OPT_NOCT, '-', "Do not request or parse SCTs (default)"},
788 {"ctlogfile", OPT_CTLOG_FILE, '<', "CT log list CONF file"},
789 #endif
790 {"keylogfile", OPT_KEYLOG_FILE, '>', "Write TLS secrets to file"},
791 {"early_data", OPT_EARLY_DATA, '<', "File to send as early data"},
792 {"enable_pha", OPT_ENABLE_PHA, '-', "Enable post-handshake-authentication"},
793 {NULL, OPT_EOF, 0x00, NULL}
794 };
795
796 typedef enum PROTOCOL_choice {
797 PROTO_OFF,
798 PROTO_SMTP,
799 PROTO_POP3,
800 PROTO_IMAP,
801 PROTO_FTP,
802 PROTO_TELNET,
803 PROTO_XMPP,
804 PROTO_XMPP_SERVER,
805 PROTO_CONNECT,
806 PROTO_IRC,
807 PROTO_MYSQL,
808 PROTO_POSTGRES,
809 PROTO_LMTP,
810 PROTO_NNTP,
811 PROTO_SIEVE,
812 PROTO_LDAP
813 } PROTOCOL_CHOICE;
814
815 static const OPT_PAIR services[] = {
816 {"smtp", PROTO_SMTP},
817 {"pop3", PROTO_POP3},
818 {"imap", PROTO_IMAP},
819 {"ftp", PROTO_FTP},
820 {"xmpp", PROTO_XMPP},
821 {"xmpp-server", PROTO_XMPP_SERVER},
822 {"telnet", PROTO_TELNET},
823 {"irc", PROTO_IRC},
824 {"mysql", PROTO_MYSQL},
825 {"postgres", PROTO_POSTGRES},
826 {"lmtp", PROTO_LMTP},
827 {"nntp", PROTO_NNTP},
828 {"sieve", PROTO_SIEVE},
829 {"ldap", PROTO_LDAP},
830 {NULL, 0}
831 };
832
833 #define IS_INET_FLAG(o) \
834 (o == OPT_4 || o == OPT_6 || o == OPT_HOST || o == OPT_PORT || o == OPT_CONNECT)
835 #define IS_UNIX_FLAG(o) (o == OPT_UNIX)
836
837 #define IS_PROT_FLAG(o) \
838 (o == OPT_SSL3 || o == OPT_TLS1 || o == OPT_TLS1_1 || o == OPT_TLS1_2 \
839 || o == OPT_TLS1_3 || o == OPT_DTLS || o == OPT_DTLS1 || o == OPT_DTLS1_2)
840
841 /* Free |*dest| and optionally set it to a copy of |source|. */
freeandcopy(char ** dest,const char * source)842 static void freeandcopy(char **dest, const char *source)
843 {
844 OPENSSL_free(*dest);
845 *dest = NULL;
846 if (source != NULL)
847 *dest = OPENSSL_strdup(source);
848 }
849
new_session_cb(SSL * s,SSL_SESSION * sess)850 static int new_session_cb(SSL *s, SSL_SESSION *sess)
851 {
852
853 if (sess_out != NULL) {
854 BIO *stmp = BIO_new_file(sess_out, "w");
855
856 if (stmp == NULL) {
857 BIO_printf(bio_err, "Error writing session file %s\n", sess_out);
858 } else {
859 PEM_write_bio_SSL_SESSION(stmp, sess);
860 BIO_free(stmp);
861 }
862 }
863
864 /*
865 * Session data gets dumped on connection for TLSv1.2 and below, and on
866 * arrival of the NewSessionTicket for TLSv1.3.
867 */
868 if (SSL_version(s) == TLS1_3_VERSION) {
869 BIO_printf(bio_c_out,
870 "---\nPost-Handshake New Session Ticket arrived:\n");
871 SSL_SESSION_print(bio_c_out, sess);
872 BIO_printf(bio_c_out, "---\n");
873 }
874
875 /*
876 * We always return a "fail" response so that the session gets freed again
877 * because we haven't used the reference.
878 */
879 return 0;
880 }
881
s_client_main(int argc,char ** argv)882 int s_client_main(int argc, char **argv)
883 {
884 BIO *sbio;
885 EVP_PKEY *key = NULL;
886 SSL *con = NULL;
887 SSL_CTX *ctx = NULL;
888 STACK_OF(X509) *chain = NULL;
889 X509 *cert = NULL;
890 X509_VERIFY_PARAM *vpm = NULL;
891 SSL_EXCERT *exc = NULL;
892 SSL_CONF_CTX *cctx = NULL;
893 STACK_OF(OPENSSL_STRING) *ssl_args = NULL;
894 char *dane_tlsa_domain = NULL;
895 STACK_OF(OPENSSL_STRING) *dane_tlsa_rrset = NULL;
896 int dane_ee_no_name = 0;
897 STACK_OF(X509_CRL) *crls = NULL;
898 const SSL_METHOD *meth = TLS_client_method();
899 const char *CApath = NULL, *CAfile = NULL;
900 char *cbuf = NULL, *sbuf = NULL;
901 char *mbuf = NULL, *proxystr = NULL, *connectstr = NULL, *bindstr = NULL;
902 char *cert_file = NULL, *key_file = NULL, *chain_file = NULL;
903 char *chCApath = NULL, *chCAfile = NULL, *host = NULL;
904 char *port = OPENSSL_strdup(PORT);
905 char *bindhost = NULL, *bindport = NULL;
906 char *passarg = NULL, *pass = NULL, *vfyCApath = NULL, *vfyCAfile = NULL;
907 char *ReqCAfile = NULL;
908 char *sess_in = NULL, *crl_file = NULL, *p;
909 const char *protohost = NULL;
910 struct timeval timeout, *timeoutp;
911 fd_set readfds, writefds;
912 int noCApath = 0, noCAfile = 0;
913 int build_chain = 0, cbuf_len, cbuf_off, cert_format = FORMAT_PEM;
914 int key_format = FORMAT_PEM, crlf = 0, full_log = 1, mbuf_len = 0;
915 int prexit = 0;
916 int sdebug = 0;
917 int reconnect = 0, verify = SSL_VERIFY_NONE, vpmtouched = 0;
918 int ret = 1, in_init = 1, i, nbio_test = 0, s = -1, k, width, state = 0;
919 int sbuf_len, sbuf_off, cmdletters = 1;
920 int socket_family = AF_UNSPEC, socket_type = SOCK_STREAM, protocol = 0;
921 int starttls_proto = PROTO_OFF, crl_format = FORMAT_PEM, crl_download = 0;
922 int write_tty, read_tty, write_ssl, read_ssl, tty_on, ssl_pending;
923 #if !defined(OPENSSL_SYS_WINDOWS) && !defined(OPENSSL_SYS_MSDOS)
924 int at_eof = 0;
925 #endif
926 int read_buf_len = 0;
927 int fallback_scsv = 0;
928 OPTION_CHOICE o;
929 #ifndef OPENSSL_NO_DTLS
930 int enable_timeouts = 0;
931 long socket_mtu = 0;
932 #endif
933 #ifndef OPENSSL_NO_ENGINE
934 ENGINE *ssl_client_engine = NULL;
935 #endif
936 ENGINE *e = NULL;
937 #if defined(OPENSSL_SYS_WINDOWS) || defined(OPENSSL_SYS_MSDOS)
938 struct timeval tv;
939 #endif
940 const char *servername = NULL;
941 char *sname_alloc = NULL;
942 int noservername = 0;
943 const char *alpn_in = NULL;
944 tlsextctx tlsextcbp = { NULL, 0 };
945 const char *ssl_config = NULL;
946 #define MAX_SI_TYPES 100
947 unsigned short serverinfo_types[MAX_SI_TYPES];
948 int serverinfo_count = 0, start = 0, len;
949 #ifndef OPENSSL_NO_NEXTPROTONEG
950 const char *next_proto_neg_in = NULL;
951 #endif
952 #ifndef OPENSSL_NO_SRP
953 char *srppass = NULL;
954 int srp_lateuser = 0;
955 SRP_ARG srp_arg = { NULL, NULL, 0, 0, 0, 1024 };
956 #endif
957 #ifndef OPENSSL_NO_SRTP
958 char *srtp_profiles = NULL;
959 #endif
960 #ifndef OPENSSL_NO_CT
961 char *ctlog_file = NULL;
962 int ct_validation = 0;
963 #endif
964 int min_version = 0, max_version = 0, prot_opt = 0, no_prot_opt = 0;
965 int async = 0;
966 unsigned int max_send_fragment = 0;
967 unsigned int split_send_fragment = 0, max_pipelines = 0;
968 enum { use_inet, use_unix, use_unknown } connect_type = use_unknown;
969 int count4or6 = 0;
970 uint8_t maxfraglen = 0;
971 int c_nbio = 0, c_msg = 0, c_ign_eof = 0, c_brief = 0;
972 int c_tlsextdebug = 0;
973 #ifndef OPENSSL_NO_OCSP
974 int c_status_req = 0;
975 #endif
976 BIO *bio_c_msg = NULL;
977 const char *keylog_file = NULL, *early_data_file = NULL;
978 #ifndef OPENSSL_NO_DTLS
979 int isdtls = 0;
980 #endif
981 char *psksessf = NULL;
982 int enable_pha = 0;
983 #ifndef OPENSSL_NO_SCTP
984 int sctp_label_bug = 0;
985 #endif
986
987 FD_ZERO(&readfds);
988 FD_ZERO(&writefds);
989 /* Known false-positive of MemorySanitizer. */
990 #if defined(__has_feature)
991 # if __has_feature(memory_sanitizer)
992 __msan_unpoison(&readfds, sizeof(readfds));
993 __msan_unpoison(&writefds, sizeof(writefds));
994 # endif
995 #endif
996
997 prog = opt_progname(argv[0]);
998 c_quiet = 0;
999 c_debug = 0;
1000 c_showcerts = 0;
1001 c_nbio = 0;
1002 vpm = X509_VERIFY_PARAM_new();
1003 cctx = SSL_CONF_CTX_new();
1004
1005 if (vpm == NULL || cctx == NULL) {
1006 BIO_printf(bio_err, "%s: out of memory\n", prog);
1007 goto end;
1008 }
1009
1010 cbuf = app_malloc(BUFSIZZ, "cbuf");
1011 sbuf = app_malloc(BUFSIZZ, "sbuf");
1012 mbuf = app_malloc(BUFSIZZ, "mbuf");
1013
1014 SSL_CONF_CTX_set_flags(cctx, SSL_CONF_FLAG_CLIENT | SSL_CONF_FLAG_CMDLINE);
1015
1016 prog = opt_init(argc, argv, s_client_options);
1017 while ((o = opt_next()) != OPT_EOF) {
1018 /* Check for intermixing flags. */
1019 if (connect_type == use_unix && IS_INET_FLAG(o)) {
1020 BIO_printf(bio_err,
1021 "%s: Intermixed protocol flags (unix and internet domains)\n",
1022 prog);
1023 goto end;
1024 }
1025 if (connect_type == use_inet && IS_UNIX_FLAG(o)) {
1026 BIO_printf(bio_err,
1027 "%s: Intermixed protocol flags (internet and unix domains)\n",
1028 prog);
1029 goto end;
1030 }
1031
1032 if (IS_PROT_FLAG(o) && ++prot_opt > 1) {
1033 BIO_printf(bio_err, "Cannot supply multiple protocol flags\n");
1034 goto end;
1035 }
1036 if (IS_NO_PROT_FLAG(o))
1037 no_prot_opt++;
1038 if (prot_opt == 1 && no_prot_opt) {
1039 BIO_printf(bio_err,
1040 "Cannot supply both a protocol flag and '-no_<prot>'\n");
1041 goto end;
1042 }
1043
1044 switch (o) {
1045 case OPT_EOF:
1046 case OPT_ERR:
1047 opthelp:
1048 BIO_printf(bio_err, "%s: Use -help for summary.\n", prog);
1049 goto end;
1050 case OPT_HELP:
1051 opt_help(s_client_options);
1052 ret = 0;
1053 goto end;
1054 case OPT_4:
1055 connect_type = use_inet;
1056 socket_family = AF_INET;
1057 count4or6++;
1058 break;
1059 #ifdef AF_INET6
1060 case OPT_6:
1061 connect_type = use_inet;
1062 socket_family = AF_INET6;
1063 count4or6++;
1064 break;
1065 #endif
1066 case OPT_HOST:
1067 connect_type = use_inet;
1068 freeandcopy(&host, opt_arg());
1069 break;
1070 case OPT_PORT:
1071 connect_type = use_inet;
1072 freeandcopy(&port, opt_arg());
1073 break;
1074 case OPT_CONNECT:
1075 connect_type = use_inet;
1076 freeandcopy(&connectstr, opt_arg());
1077 break;
1078 case OPT_BIND:
1079 freeandcopy(&bindstr, opt_arg());
1080 break;
1081 case OPT_PROXY:
1082 proxystr = opt_arg();
1083 starttls_proto = PROTO_CONNECT;
1084 break;
1085 #ifdef AF_UNIX
1086 case OPT_UNIX:
1087 connect_type = use_unix;
1088 socket_family = AF_UNIX;
1089 freeandcopy(&host, opt_arg());
1090 break;
1091 #endif
1092 case OPT_XMPPHOST:
1093 /* fall through, since this is an alias */
1094 case OPT_PROTOHOST:
1095 protohost = opt_arg();
1096 break;
1097 case OPT_VERIFY:
1098 verify = SSL_VERIFY_PEER;
1099 verify_args.depth = atoi(opt_arg());
1100 if (!c_quiet)
1101 BIO_printf(bio_err, "verify depth is %d\n", verify_args.depth);
1102 break;
1103 case OPT_CERT:
1104 cert_file = opt_arg();
1105 break;
1106 case OPT_NAMEOPT:
1107 if (!set_nameopt(opt_arg()))
1108 goto end;
1109 break;
1110 case OPT_CRL:
1111 crl_file = opt_arg();
1112 break;
1113 case OPT_CRL_DOWNLOAD:
1114 crl_download = 1;
1115 break;
1116 case OPT_SESS_OUT:
1117 sess_out = opt_arg();
1118 break;
1119 case OPT_SESS_IN:
1120 sess_in = opt_arg();
1121 break;
1122 case OPT_CERTFORM:
1123 if (!opt_format(opt_arg(), OPT_FMT_PEMDER, &cert_format))
1124 goto opthelp;
1125 break;
1126 case OPT_CRLFORM:
1127 if (!opt_format(opt_arg(), OPT_FMT_PEMDER, &crl_format))
1128 goto opthelp;
1129 break;
1130 case OPT_VERIFY_RET_ERROR:
1131 verify = SSL_VERIFY_PEER;
1132 verify_args.return_error = 1;
1133 break;
1134 case OPT_VERIFY_QUIET:
1135 verify_args.quiet = 1;
1136 break;
1137 case OPT_BRIEF:
1138 c_brief = verify_args.quiet = c_quiet = 1;
1139 break;
1140 case OPT_S_CASES:
1141 if (ssl_args == NULL)
1142 ssl_args = sk_OPENSSL_STRING_new_null();
1143 if (ssl_args == NULL
1144 || !sk_OPENSSL_STRING_push(ssl_args, opt_flag())
1145 || !sk_OPENSSL_STRING_push(ssl_args, opt_arg())) {
1146 BIO_printf(bio_err, "%s: Memory allocation failure\n", prog);
1147 goto end;
1148 }
1149 break;
1150 case OPT_V_CASES:
1151 if (!opt_verify(o, vpm))
1152 goto end;
1153 vpmtouched++;
1154 break;
1155 case OPT_X_CASES:
1156 if (!args_excert(o, &exc))
1157 goto end;
1158 break;
1159 case OPT_PREXIT:
1160 prexit = 1;
1161 break;
1162 case OPT_CRLF:
1163 crlf = 1;
1164 break;
1165 case OPT_QUIET:
1166 c_quiet = c_ign_eof = 1;
1167 break;
1168 case OPT_NBIO:
1169 c_nbio = 1;
1170 break;
1171 case OPT_NOCMDS:
1172 cmdletters = 0;
1173 break;
1174 case OPT_ENGINE:
1175 e = setup_engine(opt_arg(), 1);
1176 break;
1177 case OPT_SSL_CLIENT_ENGINE:
1178 #ifndef OPENSSL_NO_ENGINE
1179 ssl_client_engine = ENGINE_by_id(opt_arg());
1180 if (ssl_client_engine == NULL) {
1181 BIO_printf(bio_err, "Error getting client auth engine\n");
1182 goto opthelp;
1183 }
1184 #endif
1185 break;
1186 case OPT_R_CASES:
1187 if (!opt_rand(o))
1188 goto end;
1189 break;
1190 case OPT_IGN_EOF:
1191 c_ign_eof = 1;
1192 break;
1193 case OPT_NO_IGN_EOF:
1194 c_ign_eof = 0;
1195 break;
1196 case OPT_DEBUG:
1197 c_debug = 1;
1198 break;
1199 case OPT_TLSEXTDEBUG:
1200 c_tlsextdebug = 1;
1201 break;
1202 case OPT_STATUS:
1203 #ifndef OPENSSL_NO_OCSP
1204 c_status_req = 1;
1205 #endif
1206 break;
1207 case OPT_WDEBUG:
1208 #ifdef WATT32
1209 dbug_init();
1210 #endif
1211 break;
1212 case OPT_MSG:
1213 c_msg = 1;
1214 break;
1215 case OPT_MSGFILE:
1216 bio_c_msg = BIO_new_file(opt_arg(), "w");
1217 break;
1218 case OPT_TRACE:
1219 #ifndef OPENSSL_NO_SSL_TRACE
1220 c_msg = 2;
1221 #endif
1222 break;
1223 case OPT_SECURITY_DEBUG:
1224 sdebug = 1;
1225 break;
1226 case OPT_SECURITY_DEBUG_VERBOSE:
1227 sdebug = 2;
1228 break;
1229 case OPT_SHOWCERTS:
1230 c_showcerts = 1;
1231 break;
1232 case OPT_NBIO_TEST:
1233 nbio_test = 1;
1234 break;
1235 case OPT_STATE:
1236 state = 1;
1237 break;
1238 case OPT_PSK_IDENTITY:
1239 psk_identity = opt_arg();
1240 break;
1241 case OPT_PSK:
1242 for (p = psk_key = opt_arg(); *p; p++) {
1243 if (isxdigit(_UC(*p)))
1244 continue;
1245 BIO_printf(bio_err, "Not a hex number '%s'\n", psk_key);
1246 goto end;
1247 }
1248 break;
1249 case OPT_PSK_SESS:
1250 psksessf = opt_arg();
1251 break;
1252 #ifndef OPENSSL_NO_SRP
1253 case OPT_SRPUSER:
1254 srp_arg.srplogin = opt_arg();
1255 if (min_version < TLS1_VERSION)
1256 min_version = TLS1_VERSION;
1257 break;
1258 case OPT_SRPPASS:
1259 srppass = opt_arg();
1260 if (min_version < TLS1_VERSION)
1261 min_version = TLS1_VERSION;
1262 break;
1263 case OPT_SRP_STRENGTH:
1264 srp_arg.strength = atoi(opt_arg());
1265 BIO_printf(bio_err, "SRP minimal length for N is %d\n",
1266 srp_arg.strength);
1267 if (min_version < TLS1_VERSION)
1268 min_version = TLS1_VERSION;
1269 break;
1270 case OPT_SRP_LATEUSER:
1271 srp_lateuser = 1;
1272 if (min_version < TLS1_VERSION)
1273 min_version = TLS1_VERSION;
1274 break;
1275 case OPT_SRP_MOREGROUPS:
1276 srp_arg.amp = 1;
1277 if (min_version < TLS1_VERSION)
1278 min_version = TLS1_VERSION;
1279 break;
1280 #endif
1281 case OPT_SSL_CONFIG:
1282 ssl_config = opt_arg();
1283 break;
1284 case OPT_SSL3:
1285 min_version = SSL3_VERSION;
1286 max_version = SSL3_VERSION;
1287 socket_type = SOCK_STREAM;
1288 #ifndef OPENSSL_NO_DTLS
1289 isdtls = 0;
1290 #endif
1291 break;
1292 case OPT_TLS1_3:
1293 min_version = TLS1_3_VERSION;
1294 max_version = TLS1_3_VERSION;
1295 socket_type = SOCK_STREAM;
1296 #ifndef OPENSSL_NO_DTLS
1297 isdtls = 0;
1298 #endif
1299 break;
1300 case OPT_TLS1_2:
1301 min_version = TLS1_2_VERSION;
1302 max_version = TLS1_2_VERSION;
1303 socket_type = SOCK_STREAM;
1304 #ifndef OPENSSL_NO_DTLS
1305 isdtls = 0;
1306 #endif
1307 break;
1308 case OPT_TLS1_1:
1309 min_version = TLS1_1_VERSION;
1310 max_version = TLS1_1_VERSION;
1311 socket_type = SOCK_STREAM;
1312 #ifndef OPENSSL_NO_DTLS
1313 isdtls = 0;
1314 #endif
1315 break;
1316 case OPT_TLS1:
1317 min_version = TLS1_VERSION;
1318 max_version = TLS1_VERSION;
1319 socket_type = SOCK_STREAM;
1320 #ifndef OPENSSL_NO_DTLS
1321 isdtls = 0;
1322 #endif
1323 break;
1324 case OPT_DTLS:
1325 #ifndef OPENSSL_NO_DTLS
1326 meth = DTLS_client_method();
1327 socket_type = SOCK_DGRAM;
1328 isdtls = 1;
1329 #endif
1330 break;
1331 case OPT_DTLS1:
1332 #ifndef OPENSSL_NO_DTLS1
1333 meth = DTLS_client_method();
1334 min_version = DTLS1_VERSION;
1335 max_version = DTLS1_VERSION;
1336 socket_type = SOCK_DGRAM;
1337 isdtls = 1;
1338 #endif
1339 break;
1340 case OPT_DTLS1_2:
1341 #ifndef OPENSSL_NO_DTLS1_2
1342 meth = DTLS_client_method();
1343 min_version = DTLS1_2_VERSION;
1344 max_version = DTLS1_2_VERSION;
1345 socket_type = SOCK_DGRAM;
1346 isdtls = 1;
1347 #endif
1348 break;
1349 case OPT_SCTP:
1350 #ifndef OPENSSL_NO_SCTP
1351 protocol = IPPROTO_SCTP;
1352 #endif
1353 break;
1354 case OPT_SCTP_LABEL_BUG:
1355 #ifndef OPENSSL_NO_SCTP
1356 sctp_label_bug = 1;
1357 #endif
1358 break;
1359 case OPT_TIMEOUT:
1360 #ifndef OPENSSL_NO_DTLS
1361 enable_timeouts = 1;
1362 #endif
1363 break;
1364 case OPT_MTU:
1365 #ifndef OPENSSL_NO_DTLS
1366 socket_mtu = atol(opt_arg());
1367 #endif
1368 break;
1369 case OPT_FALLBACKSCSV:
1370 fallback_scsv = 1;
1371 break;
1372 case OPT_KEYFORM:
1373 if (!opt_format(opt_arg(), OPT_FMT_PDE, &key_format))
1374 goto opthelp;
1375 break;
1376 case OPT_PASS:
1377 passarg = opt_arg();
1378 break;
1379 case OPT_CERT_CHAIN:
1380 chain_file = opt_arg();
1381 break;
1382 case OPT_KEY:
1383 key_file = opt_arg();
1384 break;
1385 case OPT_RECONNECT:
1386 reconnect = 5;
1387 break;
1388 case OPT_CAPATH:
1389 CApath = opt_arg();
1390 break;
1391 case OPT_NOCAPATH:
1392 noCApath = 1;
1393 break;
1394 case OPT_CHAINCAPATH:
1395 chCApath = opt_arg();
1396 break;
1397 case OPT_VERIFYCAPATH:
1398 vfyCApath = opt_arg();
1399 break;
1400 case OPT_BUILD_CHAIN:
1401 build_chain = 1;
1402 break;
1403 case OPT_REQCAFILE:
1404 ReqCAfile = opt_arg();
1405 break;
1406 case OPT_CAFILE:
1407 CAfile = opt_arg();
1408 break;
1409 case OPT_NOCAFILE:
1410 noCAfile = 1;
1411 break;
1412 #ifndef OPENSSL_NO_CT
1413 case OPT_NOCT:
1414 ct_validation = 0;
1415 break;
1416 case OPT_CT:
1417 ct_validation = 1;
1418 break;
1419 case OPT_CTLOG_FILE:
1420 ctlog_file = opt_arg();
1421 break;
1422 #endif
1423 case OPT_CHAINCAFILE:
1424 chCAfile = opt_arg();
1425 break;
1426 case OPT_VERIFYCAFILE:
1427 vfyCAfile = opt_arg();
1428 break;
1429 case OPT_DANE_TLSA_DOMAIN:
1430 dane_tlsa_domain = opt_arg();
1431 break;
1432 case OPT_DANE_TLSA_RRDATA:
1433 if (dane_tlsa_rrset == NULL)
1434 dane_tlsa_rrset = sk_OPENSSL_STRING_new_null();
1435 if (dane_tlsa_rrset == NULL ||
1436 !sk_OPENSSL_STRING_push(dane_tlsa_rrset, opt_arg())) {
1437 BIO_printf(bio_err, "%s: Memory allocation failure\n", prog);
1438 goto end;
1439 }
1440 break;
1441 case OPT_DANE_EE_NO_NAME:
1442 dane_ee_no_name = 1;
1443 break;
1444 case OPT_NEXTPROTONEG:
1445 #ifndef OPENSSL_NO_NEXTPROTONEG
1446 next_proto_neg_in = opt_arg();
1447 #endif
1448 break;
1449 case OPT_ALPN:
1450 alpn_in = opt_arg();
1451 break;
1452 case OPT_SERVERINFO:
1453 p = opt_arg();
1454 len = strlen(p);
1455 for (start = 0, i = 0; i <= len; ++i) {
1456 if (i == len || p[i] == ',') {
1457 serverinfo_types[serverinfo_count] = atoi(p + start);
1458 if (++serverinfo_count == MAX_SI_TYPES)
1459 break;
1460 start = i + 1;
1461 }
1462 }
1463 break;
1464 case OPT_STARTTLS:
1465 if (!opt_pair(opt_arg(), services, &starttls_proto))
1466 goto end;
1467 break;
1468 case OPT_SERVERNAME:
1469 servername = opt_arg();
1470 break;
1471 case OPT_NOSERVERNAME:
1472 noservername = 1;
1473 break;
1474 case OPT_USE_SRTP:
1475 #ifndef OPENSSL_NO_SRTP
1476 srtp_profiles = opt_arg();
1477 #endif
1478 break;
1479 case OPT_KEYMATEXPORT:
1480 keymatexportlabel = opt_arg();
1481 break;
1482 case OPT_KEYMATEXPORTLEN:
1483 keymatexportlen = atoi(opt_arg());
1484 break;
1485 case OPT_ASYNC:
1486 async = 1;
1487 break;
1488 case OPT_MAXFRAGLEN:
1489 len = atoi(opt_arg());
1490 switch (len) {
1491 case 512:
1492 maxfraglen = TLSEXT_max_fragment_length_512;
1493 break;
1494 case 1024:
1495 maxfraglen = TLSEXT_max_fragment_length_1024;
1496 break;
1497 case 2048:
1498 maxfraglen = TLSEXT_max_fragment_length_2048;
1499 break;
1500 case 4096:
1501 maxfraglen = TLSEXT_max_fragment_length_4096;
1502 break;
1503 default:
1504 BIO_printf(bio_err,
1505 "%s: Max Fragment Len %u is out of permitted values",
1506 prog, len);
1507 goto opthelp;
1508 }
1509 break;
1510 case OPT_MAX_SEND_FRAG:
1511 max_send_fragment = atoi(opt_arg());
1512 break;
1513 case OPT_SPLIT_SEND_FRAG:
1514 split_send_fragment = atoi(opt_arg());
1515 break;
1516 case OPT_MAX_PIPELINES:
1517 max_pipelines = atoi(opt_arg());
1518 break;
1519 case OPT_READ_BUF:
1520 read_buf_len = atoi(opt_arg());
1521 break;
1522 case OPT_KEYLOG_FILE:
1523 keylog_file = opt_arg();
1524 break;
1525 case OPT_EARLY_DATA:
1526 early_data_file = opt_arg();
1527 break;
1528 case OPT_ENABLE_PHA:
1529 enable_pha = 1;
1530 break;
1531 }
1532 }
1533 if (count4or6 >= 2) {
1534 BIO_printf(bio_err, "%s: Can't use both -4 and -6\n", prog);
1535 goto opthelp;
1536 }
1537 if (noservername) {
1538 if (servername != NULL) {
1539 BIO_printf(bio_err,
1540 "%s: Can't use -servername and -noservername together\n",
1541 prog);
1542 goto opthelp;
1543 }
1544 if (dane_tlsa_domain != NULL) {
1545 BIO_printf(bio_err,
1546 "%s: Can't use -dane_tlsa_domain and -noservername together\n",
1547 prog);
1548 goto opthelp;
1549 }
1550 }
1551 argc = opt_num_rest();
1552 if (argc == 1) {
1553 /* If there's a positional argument, it's the equivalent of
1554 * OPT_CONNECT.
1555 * Don't allow -connect and a separate argument.
1556 */
1557 if (connectstr != NULL) {
1558 BIO_printf(bio_err,
1559 "%s: must not provide both -connect option and target parameter\n",
1560 prog);
1561 goto opthelp;
1562 }
1563 connect_type = use_inet;
1564 freeandcopy(&connectstr, *opt_rest());
1565 } else if (argc != 0) {
1566 goto opthelp;
1567 }
1568
1569 #ifndef OPENSSL_NO_NEXTPROTONEG
1570 if (min_version == TLS1_3_VERSION && next_proto_neg_in != NULL) {
1571 BIO_printf(bio_err, "Cannot supply -nextprotoneg with TLSv1.3\n");
1572 goto opthelp;
1573 }
1574 #endif
1575 if (proxystr != NULL) {
1576 int res;
1577 char *tmp_host = host, *tmp_port = port;
1578 if (connectstr == NULL) {
1579 BIO_printf(bio_err, "%s: -proxy requires use of -connect or target parameter\n", prog);
1580 goto opthelp;
1581 }
1582 res = BIO_parse_hostserv(proxystr, &host, &port, BIO_PARSE_PRIO_HOST);
1583 if (tmp_host != host)
1584 OPENSSL_free(tmp_host);
1585 if (tmp_port != port)
1586 OPENSSL_free(tmp_port);
1587 if (!res) {
1588 BIO_printf(bio_err,
1589 "%s: -proxy argument malformed or ambiguous\n", prog);
1590 goto end;
1591 }
1592 if (servername == NULL && !noservername) {
1593 res = BIO_parse_hostserv(connectstr, &sname_alloc, NULL, BIO_PARSE_PRIO_HOST);
1594 if (!res) {
1595 BIO_printf(bio_err,
1596 "%s: -connect argument malformed or ambiguous\n", prog);
1597 goto end;
1598 }
1599 servername = sname_alloc;
1600 }
1601 } else {
1602 int res = 1;
1603 char *tmp_host = host, *tmp_port = port;
1604 if (connectstr != NULL)
1605 res = BIO_parse_hostserv(connectstr, &host, &port,
1606 BIO_PARSE_PRIO_HOST);
1607 if (tmp_host != host)
1608 OPENSSL_free(tmp_host);
1609 if (tmp_port != port)
1610 OPENSSL_free(tmp_port);
1611 if (!res) {
1612 BIO_printf(bio_err,
1613 "%s: -connect argument or target parameter malformed or ambiguous\n",
1614 prog);
1615 goto end;
1616 }
1617 }
1618
1619 if (bindstr != NULL) {
1620 int res;
1621 res = BIO_parse_hostserv(bindstr, &bindhost, &bindport,
1622 BIO_PARSE_PRIO_HOST);
1623 if (!res) {
1624 BIO_printf(bio_err,
1625 "%s: -bind argument parameter malformed or ambiguous\n",
1626 prog);
1627 goto end;
1628 }
1629 }
1630
1631 #ifdef AF_UNIX
1632 if (socket_family == AF_UNIX && socket_type != SOCK_STREAM) {
1633 BIO_printf(bio_err,
1634 "Can't use unix sockets and datagrams together\n");
1635 goto end;
1636 }
1637 #endif
1638
1639 #ifndef OPENSSL_NO_SCTP
1640 if (protocol == IPPROTO_SCTP) {
1641 if (socket_type != SOCK_DGRAM) {
1642 BIO_printf(bio_err, "Can't use -sctp without DTLS\n");
1643 goto end;
1644 }
1645 /* SCTP is unusual. It uses DTLS over a SOCK_STREAM protocol */
1646 socket_type = SOCK_STREAM;
1647 }
1648 #endif
1649
1650 #if !defined(OPENSSL_NO_NEXTPROTONEG)
1651 next_proto.status = -1;
1652 if (next_proto_neg_in) {
1653 next_proto.data =
1654 next_protos_parse(&next_proto.len, next_proto_neg_in);
1655 if (next_proto.data == NULL) {
1656 BIO_printf(bio_err, "Error parsing -nextprotoneg argument\n");
1657 goto end;
1658 }
1659 } else
1660 next_proto.data = NULL;
1661 #endif
1662
1663 if (!app_passwd(passarg, NULL, &pass, NULL)) {
1664 BIO_printf(bio_err, "Error getting password\n");
1665 goto end;
1666 }
1667
1668 if (key_file == NULL)
1669 key_file = cert_file;
1670
1671 if (key_file != NULL) {
1672 key = load_key(key_file, key_format, 0, pass, e,
1673 "client certificate private key file");
1674 if (key == NULL) {
1675 ERR_print_errors(bio_err);
1676 goto end;
1677 }
1678 }
1679
1680 if (cert_file != NULL) {
1681 cert = load_cert(cert_file, cert_format, "client certificate file");
1682 if (cert == NULL) {
1683 ERR_print_errors(bio_err);
1684 goto end;
1685 }
1686 }
1687
1688 if (chain_file != NULL) {
1689 if (!load_certs(chain_file, &chain, FORMAT_PEM, NULL,
1690 "client certificate chain"))
1691 goto end;
1692 }
1693
1694 if (crl_file != NULL) {
1695 X509_CRL *crl;
1696 crl = load_crl(crl_file, crl_format);
1697 if (crl == NULL) {
1698 BIO_puts(bio_err, "Error loading CRL\n");
1699 ERR_print_errors(bio_err);
1700 goto end;
1701 }
1702 crls = sk_X509_CRL_new_null();
1703 if (crls == NULL || !sk_X509_CRL_push(crls, crl)) {
1704 BIO_puts(bio_err, "Error adding CRL\n");
1705 ERR_print_errors(bio_err);
1706 X509_CRL_free(crl);
1707 goto end;
1708 }
1709 }
1710
1711 if (!load_excert(&exc))
1712 goto end;
1713
1714 if (bio_c_out == NULL) {
1715 if (c_quiet && !c_debug) {
1716 bio_c_out = BIO_new(BIO_s_null());
1717 if (c_msg && bio_c_msg == NULL)
1718 bio_c_msg = dup_bio_out(FORMAT_TEXT);
1719 } else if (bio_c_out == NULL)
1720 bio_c_out = dup_bio_out(FORMAT_TEXT);
1721 }
1722 #ifndef OPENSSL_NO_SRP
1723 if (!app_passwd(srppass, NULL, &srp_arg.srppassin, NULL)) {
1724 BIO_printf(bio_err, "Error getting password\n");
1725 goto end;
1726 }
1727 #endif
1728
1729 ctx = SSL_CTX_new(meth);
1730 if (ctx == NULL) {
1731 ERR_print_errors(bio_err);
1732 goto end;
1733 }
1734
1735 SSL_CTX_clear_mode(ctx, SSL_MODE_AUTO_RETRY);
1736
1737 if (sdebug)
1738 ssl_ctx_security_debug(ctx, sdebug);
1739
1740 if (!config_ctx(cctx, ssl_args, ctx))
1741 goto end;
1742
1743 if (ssl_config != NULL) {
1744 if (SSL_CTX_config(ctx, ssl_config) == 0) {
1745 BIO_printf(bio_err, "Error using configuration \"%s\"\n",
1746 ssl_config);
1747 ERR_print_errors(bio_err);
1748 goto end;
1749 }
1750 }
1751
1752 #ifndef OPENSSL_NO_SCTP
1753 if (protocol == IPPROTO_SCTP && sctp_label_bug == 1)
1754 SSL_CTX_set_mode(ctx, SSL_MODE_DTLS_SCTP_LABEL_LENGTH_BUG);
1755 #endif
1756
1757 if (min_version != 0
1758 && SSL_CTX_set_min_proto_version(ctx, min_version) == 0)
1759 goto end;
1760 if (max_version != 0
1761 && SSL_CTX_set_max_proto_version(ctx, max_version) == 0)
1762 goto end;
1763
1764 if (vpmtouched && !SSL_CTX_set1_param(ctx, vpm)) {
1765 BIO_printf(bio_err, "Error setting verify params\n");
1766 ERR_print_errors(bio_err);
1767 goto end;
1768 }
1769
1770 if (async) {
1771 SSL_CTX_set_mode(ctx, SSL_MODE_ASYNC);
1772 }
1773
1774 if (max_send_fragment > 0
1775 && !SSL_CTX_set_max_send_fragment(ctx, max_send_fragment)) {
1776 BIO_printf(bio_err, "%s: Max send fragment size %u is out of permitted range\n",
1777 prog, max_send_fragment);
1778 goto end;
1779 }
1780
1781 if (split_send_fragment > 0
1782 && !SSL_CTX_set_split_send_fragment(ctx, split_send_fragment)) {
1783 BIO_printf(bio_err, "%s: Split send fragment size %u is out of permitted range\n",
1784 prog, split_send_fragment);
1785 goto end;
1786 }
1787
1788 if (max_pipelines > 0
1789 && !SSL_CTX_set_max_pipelines(ctx, max_pipelines)) {
1790 BIO_printf(bio_err, "%s: Max pipelines %u is out of permitted range\n",
1791 prog, max_pipelines);
1792 goto end;
1793 }
1794
1795 if (read_buf_len > 0) {
1796 SSL_CTX_set_default_read_buffer_len(ctx, read_buf_len);
1797 }
1798
1799 if (maxfraglen > 0
1800 && !SSL_CTX_set_tlsext_max_fragment_length(ctx, maxfraglen)) {
1801 BIO_printf(bio_err,
1802 "%s: Max Fragment Length code %u is out of permitted values"
1803 "\n", prog, maxfraglen);
1804 goto end;
1805 }
1806
1807 if (!ssl_load_stores(ctx, vfyCApath, vfyCAfile, chCApath, chCAfile,
1808 crls, crl_download)) {
1809 BIO_printf(bio_err, "Error loading store locations\n");
1810 ERR_print_errors(bio_err);
1811 goto end;
1812 }
1813 if (ReqCAfile != NULL) {
1814 STACK_OF(X509_NAME) *nm = sk_X509_NAME_new_null();
1815
1816 if (nm == NULL || !SSL_add_file_cert_subjects_to_stack(nm, ReqCAfile)) {
1817 sk_X509_NAME_pop_free(nm, X509_NAME_free);
1818 BIO_printf(bio_err, "Error loading CA names\n");
1819 ERR_print_errors(bio_err);
1820 goto end;
1821 }
1822 SSL_CTX_set0_CA_list(ctx, nm);
1823 }
1824 #ifndef OPENSSL_NO_ENGINE
1825 if (ssl_client_engine) {
1826 if (!SSL_CTX_set_client_cert_engine(ctx, ssl_client_engine)) {
1827 BIO_puts(bio_err, "Error setting client auth engine\n");
1828 ERR_print_errors(bio_err);
1829 ENGINE_free(ssl_client_engine);
1830 goto end;
1831 }
1832 ENGINE_free(ssl_client_engine);
1833 }
1834 #endif
1835
1836 #ifndef OPENSSL_NO_PSK
1837 if (psk_key != NULL) {
1838 if (c_debug)
1839 BIO_printf(bio_c_out, "PSK key given, setting client callback\n");
1840 SSL_CTX_set_psk_client_callback(ctx, psk_client_cb);
1841 }
1842 #endif
1843 if (psksessf != NULL) {
1844 BIO *stmp = BIO_new_file(psksessf, "r");
1845
1846 if (stmp == NULL) {
1847 BIO_printf(bio_err, "Can't open PSK session file %s\n", psksessf);
1848 ERR_print_errors(bio_err);
1849 goto end;
1850 }
1851 psksess = PEM_read_bio_SSL_SESSION(stmp, NULL, 0, NULL);
1852 BIO_free(stmp);
1853 if (psksess == NULL) {
1854 BIO_printf(bio_err, "Can't read PSK session file %s\n", psksessf);
1855 ERR_print_errors(bio_err);
1856 goto end;
1857 }
1858 }
1859 if (psk_key != NULL || psksess != NULL)
1860 SSL_CTX_set_psk_use_session_callback(ctx, psk_use_session_cb);
1861
1862 #ifndef OPENSSL_NO_SRTP
1863 if (srtp_profiles != NULL) {
1864 /* Returns 0 on success! */
1865 if (SSL_CTX_set_tlsext_use_srtp(ctx, srtp_profiles) != 0) {
1866 BIO_printf(bio_err, "Error setting SRTP profile\n");
1867 ERR_print_errors(bio_err);
1868 goto end;
1869 }
1870 }
1871 #endif
1872
1873 if (exc != NULL)
1874 ssl_ctx_set_excert(ctx, exc);
1875
1876 #if !defined(OPENSSL_NO_NEXTPROTONEG)
1877 if (next_proto.data != NULL)
1878 SSL_CTX_set_next_proto_select_cb(ctx, next_proto_cb, &next_proto);
1879 #endif
1880 if (alpn_in) {
1881 size_t alpn_len;
1882 unsigned char *alpn = next_protos_parse(&alpn_len, alpn_in);
1883
1884 if (alpn == NULL) {
1885 BIO_printf(bio_err, "Error parsing -alpn argument\n");
1886 goto end;
1887 }
1888 /* Returns 0 on success! */
1889 if (SSL_CTX_set_alpn_protos(ctx, alpn, alpn_len) != 0) {
1890 BIO_printf(bio_err, "Error setting ALPN\n");
1891 goto end;
1892 }
1893 OPENSSL_free(alpn);
1894 }
1895
1896 for (i = 0; i < serverinfo_count; i++) {
1897 if (!SSL_CTX_add_client_custom_ext(ctx,
1898 serverinfo_types[i],
1899 NULL, NULL, NULL,
1900 serverinfo_cli_parse_cb, NULL)) {
1901 BIO_printf(bio_err,
1902 "Warning: Unable to add custom extension %u, skipping\n",
1903 serverinfo_types[i]);
1904 }
1905 }
1906
1907 if (state)
1908 SSL_CTX_set_info_callback(ctx, apps_ssl_info_callback);
1909
1910 #ifndef OPENSSL_NO_CT
1911 /* Enable SCT processing, without early connection termination */
1912 if (ct_validation &&
1913 !SSL_CTX_enable_ct(ctx, SSL_CT_VALIDATION_PERMISSIVE)) {
1914 ERR_print_errors(bio_err);
1915 goto end;
1916 }
1917
1918 if (!ctx_set_ctlog_list_file(ctx, ctlog_file)) {
1919 if (ct_validation) {
1920 ERR_print_errors(bio_err);
1921 goto end;
1922 }
1923
1924 /*
1925 * If CT validation is not enabled, the log list isn't needed so don't
1926 * show errors or abort. We try to load it regardless because then we
1927 * can show the names of the logs any SCTs came from (SCTs may be seen
1928 * even with validation disabled).
1929 */
1930 ERR_clear_error();
1931 }
1932 #endif
1933
1934 SSL_CTX_set_verify(ctx, verify, verify_callback);
1935
1936 if (!ctx_set_verify_locations(ctx, CAfile, CApath, noCAfile, noCApath)) {
1937 ERR_print_errors(bio_err);
1938 goto end;
1939 }
1940
1941 ssl_ctx_add_crls(ctx, crls, crl_download);
1942
1943 if (!set_cert_key_stuff(ctx, cert, key, chain, build_chain))
1944 goto end;
1945
1946 if (!noservername) {
1947 tlsextcbp.biodebug = bio_err;
1948 SSL_CTX_set_tlsext_servername_callback(ctx, ssl_servername_cb);
1949 SSL_CTX_set_tlsext_servername_arg(ctx, &tlsextcbp);
1950 }
1951 # ifndef OPENSSL_NO_SRP
1952 if (srp_arg.srplogin) {
1953 if (!srp_lateuser && !SSL_CTX_set_srp_username(ctx, srp_arg.srplogin)) {
1954 BIO_printf(bio_err, "Unable to set SRP username\n");
1955 goto end;
1956 }
1957 srp_arg.msg = c_msg;
1958 srp_arg.debug = c_debug;
1959 SSL_CTX_set_srp_cb_arg(ctx, &srp_arg);
1960 SSL_CTX_set_srp_client_pwd_callback(ctx, ssl_give_srp_client_pwd_cb);
1961 SSL_CTX_set_srp_strength(ctx, srp_arg.strength);
1962 if (c_msg || c_debug || srp_arg.amp == 0)
1963 SSL_CTX_set_srp_verify_param_callback(ctx,
1964 ssl_srp_verify_param_cb);
1965 }
1966 # endif
1967
1968 if (dane_tlsa_domain != NULL) {
1969 if (SSL_CTX_dane_enable(ctx) <= 0) {
1970 BIO_printf(bio_err,
1971 "%s: Error enabling DANE TLSA authentication.\n",
1972 prog);
1973 ERR_print_errors(bio_err);
1974 goto end;
1975 }
1976 }
1977
1978 /*
1979 * In TLSv1.3 NewSessionTicket messages arrive after the handshake and can
1980 * come at any time. Therefore we use a callback to write out the session
1981 * when we know about it. This approach works for < TLSv1.3 as well.
1982 */
1983 SSL_CTX_set_session_cache_mode(ctx, SSL_SESS_CACHE_CLIENT
1984 | SSL_SESS_CACHE_NO_INTERNAL_STORE);
1985 SSL_CTX_sess_set_new_cb(ctx, new_session_cb);
1986
1987 if (set_keylog_file(ctx, keylog_file))
1988 goto end;
1989
1990 con = SSL_new(ctx);
1991 if (con == NULL)
1992 goto end;
1993
1994 if (enable_pha)
1995 SSL_set_post_handshake_auth(con, 1);
1996
1997 if (sess_in != NULL) {
1998 SSL_SESSION *sess;
1999 BIO *stmp = BIO_new_file(sess_in, "r");
2000 if (stmp == NULL) {
2001 BIO_printf(bio_err, "Can't open session file %s\n", sess_in);
2002 ERR_print_errors(bio_err);
2003 goto end;
2004 }
2005 sess = PEM_read_bio_SSL_SESSION(stmp, NULL, 0, NULL);
2006 BIO_free(stmp);
2007 if (sess == NULL) {
2008 BIO_printf(bio_err, "Can't open session file %s\n", sess_in);
2009 ERR_print_errors(bio_err);
2010 goto end;
2011 }
2012 if (!SSL_set_session(con, sess)) {
2013 BIO_printf(bio_err, "Can't set session\n");
2014 ERR_print_errors(bio_err);
2015 goto end;
2016 }
2017
2018 SSL_SESSION_free(sess);
2019 }
2020
2021 if (fallback_scsv)
2022 SSL_set_mode(con, SSL_MODE_SEND_FALLBACK_SCSV);
2023
2024 if (!noservername && (servername != NULL || dane_tlsa_domain == NULL)) {
2025 if (servername == NULL) {
2026 if(host == NULL || is_dNS_name(host))
2027 servername = (host == NULL) ? "localhost" : host;
2028 }
2029 if (servername != NULL && !SSL_set_tlsext_host_name(con, servername)) {
2030 BIO_printf(bio_err, "Unable to set TLS servername extension.\n");
2031 ERR_print_errors(bio_err);
2032 goto end;
2033 }
2034 }
2035
2036 if (dane_tlsa_domain != NULL) {
2037 if (SSL_dane_enable(con, dane_tlsa_domain) <= 0) {
2038 BIO_printf(bio_err, "%s: Error enabling DANE TLSA "
2039 "authentication.\n", prog);
2040 ERR_print_errors(bio_err);
2041 goto end;
2042 }
2043 if (dane_tlsa_rrset == NULL) {
2044 BIO_printf(bio_err, "%s: DANE TLSA authentication requires at "
2045 "least one -dane_tlsa_rrdata option.\n", prog);
2046 goto end;
2047 }
2048 if (tlsa_import_rrset(con, dane_tlsa_rrset) <= 0) {
2049 BIO_printf(bio_err, "%s: Failed to import any TLSA "
2050 "records.\n", prog);
2051 goto end;
2052 }
2053 if (dane_ee_no_name)
2054 SSL_dane_set_flags(con, DANE_FLAG_NO_DANE_EE_NAMECHECKS);
2055 } else if (dane_tlsa_rrset != NULL) {
2056 BIO_printf(bio_err, "%s: DANE TLSA authentication requires the "
2057 "-dane_tlsa_domain option.\n", prog);
2058 goto end;
2059 }
2060
2061 re_start:
2062 if (init_client(&s, host, port, bindhost, bindport, socket_family,
2063 socket_type, protocol) == 0) {
2064 BIO_printf(bio_err, "connect:errno=%d\n", get_last_socket_error());
2065 BIO_closesocket(s);
2066 goto end;
2067 }
2068 BIO_printf(bio_c_out, "CONNECTED(%08X)\n", s);
2069
2070 if (c_nbio) {
2071 if (!BIO_socket_nbio(s, 1)) {
2072 ERR_print_errors(bio_err);
2073 goto end;
2074 }
2075 BIO_printf(bio_c_out, "Turned on non blocking io\n");
2076 }
2077 #ifndef OPENSSL_NO_DTLS
2078 if (isdtls) {
2079 union BIO_sock_info_u peer_info;
2080
2081 #ifndef OPENSSL_NO_SCTP
2082 if (protocol == IPPROTO_SCTP)
2083 sbio = BIO_new_dgram_sctp(s, BIO_NOCLOSE);
2084 else
2085 #endif
2086 sbio = BIO_new_dgram(s, BIO_NOCLOSE);
2087
2088 if ((peer_info.addr = BIO_ADDR_new()) == NULL) {
2089 BIO_printf(bio_err, "memory allocation failure\n");
2090 BIO_closesocket(s);
2091 goto end;
2092 }
2093 if (!BIO_sock_info(s, BIO_SOCK_INFO_ADDRESS, &peer_info)) {
2094 BIO_printf(bio_err, "getsockname:errno=%d\n",
2095 get_last_socket_error());
2096 BIO_ADDR_free(peer_info.addr);
2097 BIO_closesocket(s);
2098 goto end;
2099 }
2100
2101 (void)BIO_ctrl_set_connected(sbio, peer_info.addr);
2102 BIO_ADDR_free(peer_info.addr);
2103 peer_info.addr = NULL;
2104
2105 if (enable_timeouts) {
2106 timeout.tv_sec = 0;
2107 timeout.tv_usec = DGRAM_RCV_TIMEOUT;
2108 BIO_ctrl(sbio, BIO_CTRL_DGRAM_SET_RECV_TIMEOUT, 0, &timeout);
2109
2110 timeout.tv_sec = 0;
2111 timeout.tv_usec = DGRAM_SND_TIMEOUT;
2112 BIO_ctrl(sbio, BIO_CTRL_DGRAM_SET_SEND_TIMEOUT, 0, &timeout);
2113 }
2114
2115 if (socket_mtu) {
2116 if (socket_mtu < DTLS_get_link_min_mtu(con)) {
2117 BIO_printf(bio_err, "MTU too small. Must be at least %ld\n",
2118 DTLS_get_link_min_mtu(con));
2119 BIO_free(sbio);
2120 goto shut;
2121 }
2122 SSL_set_options(con, SSL_OP_NO_QUERY_MTU);
2123 if (!DTLS_set_link_mtu(con, socket_mtu)) {
2124 BIO_printf(bio_err, "Failed to set MTU\n");
2125 BIO_free(sbio);
2126 goto shut;
2127 }
2128 } else {
2129 /* want to do MTU discovery */
2130 BIO_ctrl(sbio, BIO_CTRL_DGRAM_MTU_DISCOVER, 0, NULL);
2131 }
2132 } else
2133 #endif /* OPENSSL_NO_DTLS */
2134 sbio = BIO_new_socket(s, BIO_NOCLOSE);
2135
2136 if (nbio_test) {
2137 BIO *test;
2138
2139 test = BIO_new(BIO_f_nbio_test());
2140 sbio = BIO_push(test, sbio);
2141 }
2142
2143 if (c_debug) {
2144 BIO_set_callback(sbio, bio_dump_callback);
2145 BIO_set_callback_arg(sbio, (char *)bio_c_out);
2146 }
2147 if (c_msg) {
2148 #ifndef OPENSSL_NO_SSL_TRACE
2149 if (c_msg == 2)
2150 SSL_set_msg_callback(con, SSL_trace);
2151 else
2152 #endif
2153 SSL_set_msg_callback(con, msg_cb);
2154 SSL_set_msg_callback_arg(con, bio_c_msg ? bio_c_msg : bio_c_out);
2155 }
2156
2157 if (c_tlsextdebug) {
2158 SSL_set_tlsext_debug_callback(con, tlsext_cb);
2159 SSL_set_tlsext_debug_arg(con, bio_c_out);
2160 }
2161 #ifndef OPENSSL_NO_OCSP
2162 if (c_status_req) {
2163 SSL_set_tlsext_status_type(con, TLSEXT_STATUSTYPE_ocsp);
2164 SSL_CTX_set_tlsext_status_cb(ctx, ocsp_resp_cb);
2165 SSL_CTX_set_tlsext_status_arg(ctx, bio_c_out);
2166 }
2167 #endif
2168
2169 SSL_set_bio(con, sbio, sbio);
2170 SSL_set_connect_state(con);
2171
2172 /* ok, lets connect */
2173 if (fileno_stdin() > SSL_get_fd(con))
2174 width = fileno_stdin() + 1;
2175 else
2176 width = SSL_get_fd(con) + 1;
2177
2178 read_tty = 1;
2179 write_tty = 0;
2180 tty_on = 0;
2181 read_ssl = 1;
2182 write_ssl = 1;
2183
2184 cbuf_len = 0;
2185 cbuf_off = 0;
2186 sbuf_len = 0;
2187 sbuf_off = 0;
2188
2189 switch ((PROTOCOL_CHOICE) starttls_proto) {
2190 case PROTO_OFF:
2191 break;
2192 case PROTO_LMTP:
2193 case PROTO_SMTP:
2194 {
2195 /*
2196 * This is an ugly hack that does a lot of assumptions. We do
2197 * have to handle multi-line responses which may come in a single
2198 * packet or not. We therefore have to use BIO_gets() which does
2199 * need a buffering BIO. So during the initial chitchat we do
2200 * push a buffering BIO into the chain that is removed again
2201 * later on to not disturb the rest of the s_client operation.
2202 */
2203 int foundit = 0;
2204 BIO *fbio = BIO_new(BIO_f_buffer());
2205
2206 BIO_push(fbio, sbio);
2207 /* Wait for multi-line response to end from LMTP or SMTP */
2208 do {
2209 mbuf_len = BIO_gets(fbio, mbuf, BUFSIZZ);
2210 } while (mbuf_len > 3 && mbuf[3] == '-');
2211 if (protohost == NULL)
2212 protohost = "mail.example.com";
2213 if (starttls_proto == (int)PROTO_LMTP)
2214 BIO_printf(fbio, "LHLO %s\r\n", protohost);
2215 else
2216 BIO_printf(fbio, "EHLO %s\r\n", protohost);
2217 (void)BIO_flush(fbio);
2218 /*
2219 * Wait for multi-line response to end LHLO LMTP or EHLO SMTP
2220 * response.
2221 */
2222 do {
2223 mbuf_len = BIO_gets(fbio, mbuf, BUFSIZZ);
2224 if (strstr(mbuf, "STARTTLS"))
2225 foundit = 1;
2226 } while (mbuf_len > 3 && mbuf[3] == '-');
2227 (void)BIO_flush(fbio);
2228 BIO_pop(fbio);
2229 BIO_free(fbio);
2230 if (!foundit)
2231 BIO_printf(bio_err,
2232 "Didn't find STARTTLS in server response,"
2233 " trying anyway...\n");
2234 BIO_printf(sbio, "STARTTLS\r\n");
2235 BIO_read(sbio, sbuf, BUFSIZZ);
2236 }
2237 break;
2238 case PROTO_POP3:
2239 {
2240 BIO_read(sbio, mbuf, BUFSIZZ);
2241 BIO_printf(sbio, "STLS\r\n");
2242 mbuf_len = BIO_read(sbio, sbuf, BUFSIZZ);
2243 if (mbuf_len < 0) {
2244 BIO_printf(bio_err, "BIO_read failed\n");
2245 goto end;
2246 }
2247 }
2248 break;
2249 case PROTO_IMAP:
2250 {
2251 int foundit = 0;
2252 BIO *fbio = BIO_new(BIO_f_buffer());
2253
2254 BIO_push(fbio, sbio);
2255 BIO_gets(fbio, mbuf, BUFSIZZ);
2256 /* STARTTLS command requires CAPABILITY... */
2257 BIO_printf(fbio, ". CAPABILITY\r\n");
2258 (void)BIO_flush(fbio);
2259 /* wait for multi-line CAPABILITY response */
2260 do {
2261 mbuf_len = BIO_gets(fbio, mbuf, BUFSIZZ);
2262 if (strstr(mbuf, "STARTTLS"))
2263 foundit = 1;
2264 }
2265 while (mbuf_len > 3 && mbuf[0] != '.');
2266 (void)BIO_flush(fbio);
2267 BIO_pop(fbio);
2268 BIO_free(fbio);
2269 if (!foundit)
2270 BIO_printf(bio_err,
2271 "Didn't find STARTTLS in server response,"
2272 " trying anyway...\n");
2273 BIO_printf(sbio, ". STARTTLS\r\n");
2274 BIO_read(sbio, sbuf, BUFSIZZ);
2275 }
2276 break;
2277 case PROTO_FTP:
2278 {
2279 BIO *fbio = BIO_new(BIO_f_buffer());
2280
2281 BIO_push(fbio, sbio);
2282 /* wait for multi-line response to end from FTP */
2283 do {
2284 mbuf_len = BIO_gets(fbio, mbuf, BUFSIZZ);
2285 }
2286 while (mbuf_len > 3 && (!isdigit(mbuf[0]) || !isdigit(mbuf[1]) || !isdigit(mbuf[2]) || mbuf[3] != ' '));
2287 (void)BIO_flush(fbio);
2288 BIO_pop(fbio);
2289 BIO_free(fbio);
2290 BIO_printf(sbio, "AUTH TLS\r\n");
2291 BIO_read(sbio, sbuf, BUFSIZZ);
2292 }
2293 break;
2294 case PROTO_XMPP:
2295 case PROTO_XMPP_SERVER:
2296 {
2297 int seen = 0;
2298 BIO_printf(sbio, "<stream:stream "
2299 "xmlns:stream='http://etherx.jabber.org/streams' "
2300 "xmlns='jabber:%s' to='%s' version='1.0'>",
2301 starttls_proto == PROTO_XMPP ? "client" : "server",
2302 protohost ? protohost : host);
2303 seen = BIO_read(sbio, mbuf, BUFSIZZ);
2304 if (seen < 0) {
2305 BIO_printf(bio_err, "BIO_read failed\n");
2306 goto end;
2307 }
2308 mbuf[seen] = '\0';
2309 while (!strstr
2310 (mbuf, "<starttls xmlns='urn:ietf:params:xml:ns:xmpp-tls'")
2311 && !strstr(mbuf,
2312 "<starttls xmlns=\"urn:ietf:params:xml:ns:xmpp-tls\""))
2313 {
2314 seen = BIO_read(sbio, mbuf, BUFSIZZ);
2315
2316 if (seen <= 0)
2317 goto shut;
2318
2319 mbuf[seen] = '\0';
2320 }
2321 BIO_printf(sbio,
2322 "<starttls xmlns='urn:ietf:params:xml:ns:xmpp-tls'/>");
2323 seen = BIO_read(sbio, sbuf, BUFSIZZ);
2324 if (seen < 0) {
2325 BIO_printf(bio_err, "BIO_read failed\n");
2326 goto shut;
2327 }
2328 sbuf[seen] = '\0';
2329 if (!strstr(sbuf, "<proceed"))
2330 goto shut;
2331 mbuf[0] = '\0';
2332 }
2333 break;
2334 case PROTO_TELNET:
2335 {
2336 static const unsigned char tls_do[] = {
2337 /* IAC DO START_TLS */
2338 255, 253, 46
2339 };
2340 static const unsigned char tls_will[] = {
2341 /* IAC WILL START_TLS */
2342 255, 251, 46
2343 };
2344 static const unsigned char tls_follows[] = {
2345 /* IAC SB START_TLS FOLLOWS IAC SE */
2346 255, 250, 46, 1, 255, 240
2347 };
2348 int bytes;
2349
2350 /* Telnet server should demand we issue START_TLS */
2351 bytes = BIO_read(sbio, mbuf, BUFSIZZ);
2352 if (bytes != 3 || memcmp(mbuf, tls_do, 3) != 0)
2353 goto shut;
2354 /* Agree to issue START_TLS and send the FOLLOWS sub-command */
2355 BIO_write(sbio, tls_will, 3);
2356 BIO_write(sbio, tls_follows, 6);
2357 (void)BIO_flush(sbio);
2358 /* Telnet server also sent the FOLLOWS sub-command */
2359 bytes = BIO_read(sbio, mbuf, BUFSIZZ);
2360 if (bytes != 6 || memcmp(mbuf, tls_follows, 6) != 0)
2361 goto shut;
2362 }
2363 break;
2364 case PROTO_CONNECT:
2365 {
2366 enum {
2367 error_proto, /* Wrong protocol, not even HTTP */
2368 error_connect, /* CONNECT failed */
2369 success
2370 } foundit = error_connect;
2371 BIO *fbio = BIO_new(BIO_f_buffer());
2372
2373 BIO_push(fbio, sbio);
2374 BIO_printf(fbio, "CONNECT %s HTTP/1.0\r\n\r\n", connectstr);
2375 (void)BIO_flush(fbio);
2376 /*
2377 * The first line is the HTTP response. According to RFC 7230,
2378 * it's formatted exactly like this:
2379 *
2380 * HTTP/d.d ddd Reason text\r\n
2381 */
2382 mbuf_len = BIO_gets(fbio, mbuf, BUFSIZZ);
2383 if (mbuf_len < (int)strlen("HTTP/1.0 200")) {
2384 BIO_printf(bio_err,
2385 "%s: HTTP CONNECT failed, insufficient response "
2386 "from proxy (got %d octets)\n", prog, mbuf_len);
2387 (void)BIO_flush(fbio);
2388 BIO_pop(fbio);
2389 BIO_free(fbio);
2390 goto shut;
2391 }
2392 if (mbuf[8] != ' ') {
2393 BIO_printf(bio_err,
2394 "%s: HTTP CONNECT failed, incorrect response "
2395 "from proxy\n", prog);
2396 foundit = error_proto;
2397 } else if (mbuf[9] != '2') {
2398 BIO_printf(bio_err, "%s: HTTP CONNECT failed: %s ", prog,
2399 &mbuf[9]);
2400 } else {
2401 foundit = success;
2402 }
2403 if (foundit != error_proto) {
2404 /* Read past all following headers */
2405 do {
2406 mbuf_len = BIO_gets(fbio, mbuf, BUFSIZZ);
2407 } while (mbuf_len > 2);
2408 }
2409 (void)BIO_flush(fbio);
2410 BIO_pop(fbio);
2411 BIO_free(fbio);
2412 if (foundit != success) {
2413 goto shut;
2414 }
2415 }
2416 break;
2417 case PROTO_IRC:
2418 {
2419 int numeric;
2420 BIO *fbio = BIO_new(BIO_f_buffer());
2421
2422 BIO_push(fbio, sbio);
2423 BIO_printf(fbio, "STARTTLS\r\n");
2424 (void)BIO_flush(fbio);
2425 width = SSL_get_fd(con) + 1;
2426
2427 do {
2428 numeric = 0;
2429
2430 FD_ZERO(&readfds);
2431 openssl_fdset(SSL_get_fd(con), &readfds);
2432 timeout.tv_sec = S_CLIENT_IRC_READ_TIMEOUT;
2433 timeout.tv_usec = 0;
2434 /*
2435 * If the IRCd doesn't respond within
2436 * S_CLIENT_IRC_READ_TIMEOUT seconds, assume
2437 * it doesn't support STARTTLS. Many IRCds
2438 * will not give _any_ sort of response to a
2439 * STARTTLS command when it's not supported.
2440 */
2441 if (!BIO_get_buffer_num_lines(fbio)
2442 && !BIO_pending(fbio)
2443 && !BIO_pending(sbio)
2444 && select(width, (void *)&readfds, NULL, NULL,
2445 &timeout) < 1) {
2446 BIO_printf(bio_err,
2447 "Timeout waiting for response (%d seconds).\n",
2448 S_CLIENT_IRC_READ_TIMEOUT);
2449 break;
2450 }
2451
2452 mbuf_len = BIO_gets(fbio, mbuf, BUFSIZZ);
2453 if (mbuf_len < 1 || sscanf(mbuf, "%*s %d", &numeric) != 1)
2454 break;
2455 /* :example.net 451 STARTTLS :You have not registered */
2456 /* :example.net 421 STARTTLS :Unknown command */
2457 if ((numeric == 451 || numeric == 421)
2458 && strstr(mbuf, "STARTTLS") != NULL) {
2459 BIO_printf(bio_err, "STARTTLS not supported: %s", mbuf);
2460 break;
2461 }
2462 if (numeric == 691) {
2463 BIO_printf(bio_err, "STARTTLS negotiation failed: ");
2464 ERR_print_errors(bio_err);
2465 break;
2466 }
2467 } while (numeric != 670);
2468
2469 (void)BIO_flush(fbio);
2470 BIO_pop(fbio);
2471 BIO_free(fbio);
2472 if (numeric != 670) {
2473 BIO_printf(bio_err, "Server does not support STARTTLS.\n");
2474 ret = 1;
2475 goto shut;
2476 }
2477 }
2478 break;
2479 case PROTO_MYSQL:
2480 {
2481 /* SSL request packet */
2482 static const unsigned char ssl_req[] = {
2483 /* payload_length, sequence_id */
2484 0x20, 0x00, 0x00, 0x01,
2485 /* payload */
2486 /* capability flags, CLIENT_SSL always set */
2487 0x85, 0xae, 0x7f, 0x00,
2488 /* max-packet size */
2489 0x00, 0x00, 0x00, 0x01,
2490 /* character set */
2491 0x21,
2492 /* string[23] reserved (all [0]) */
2493 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
2494 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
2495 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00
2496 };
2497 int bytes = 0;
2498 int ssl_flg = 0x800;
2499 int pos;
2500 const unsigned char *packet = (const unsigned char *)sbuf;
2501
2502 /* Receiving Initial Handshake packet. */
2503 bytes = BIO_read(sbio, (void *)packet, BUFSIZZ);
2504 if (bytes < 0) {
2505 BIO_printf(bio_err, "BIO_read failed\n");
2506 goto shut;
2507 /* Packet length[3], Packet number[1] + minimum payload[17] */
2508 } else if (bytes < 21) {
2509 BIO_printf(bio_err, "MySQL packet too short.\n");
2510 goto shut;
2511 } else if (bytes != (4 + packet[0] +
2512 (packet[1] << 8) +
2513 (packet[2] << 16))) {
2514 BIO_printf(bio_err, "MySQL packet length does not match.\n");
2515 goto shut;
2516 /* protocol version[1] */
2517 } else if (packet[4] != 0xA) {
2518 BIO_printf(bio_err,
2519 "Only MySQL protocol version 10 is supported.\n");
2520 goto shut;
2521 }
2522
2523 pos = 5;
2524 /* server version[string+NULL] */
2525 for (;;) {
2526 if (pos >= bytes) {
2527 BIO_printf(bio_err, "Cannot confirm server version. ");
2528 goto shut;
2529 } else if (packet[pos++] == '\0') {
2530 break;
2531 }
2532 }
2533
2534 /* make sure we have at least 15 bytes left in the packet */
2535 if (pos + 15 > bytes) {
2536 BIO_printf(bio_err,
2537 "MySQL server handshake packet is broken.\n");
2538 goto shut;
2539 }
2540
2541 pos += 12; /* skip over conn id[4] + SALT[8] */
2542 if (packet[pos++] != '\0') { /* verify filler */
2543 BIO_printf(bio_err,
2544 "MySQL packet is broken.\n");
2545 goto shut;
2546 }
2547
2548 /* capability flags[2] */
2549 if (!((packet[pos] + (packet[pos + 1] << 8)) & ssl_flg)) {
2550 BIO_printf(bio_err, "MySQL server does not support SSL.\n");
2551 goto shut;
2552 }
2553
2554 /* Sending SSL Handshake packet. */
2555 BIO_write(sbio, ssl_req, sizeof(ssl_req));
2556 (void)BIO_flush(sbio);
2557 }
2558 break;
2559 case PROTO_POSTGRES:
2560 {
2561 static const unsigned char ssl_request[] = {
2562 /* Length SSLRequest */
2563 0, 0, 0, 8, 4, 210, 22, 47
2564 };
2565 int bytes;
2566
2567 /* Send SSLRequest packet */
2568 BIO_write(sbio, ssl_request, 8);
2569 (void)BIO_flush(sbio);
2570
2571 /* Reply will be a single S if SSL is enabled */
2572 bytes = BIO_read(sbio, sbuf, BUFSIZZ);
2573 if (bytes != 1 || sbuf[0] != 'S')
2574 goto shut;
2575 }
2576 break;
2577 case PROTO_NNTP:
2578 {
2579 int foundit = 0;
2580 BIO *fbio = BIO_new(BIO_f_buffer());
2581
2582 BIO_push(fbio, sbio);
2583 BIO_gets(fbio, mbuf, BUFSIZZ);
2584 /* STARTTLS command requires CAPABILITIES... */
2585 BIO_printf(fbio, "CAPABILITIES\r\n");
2586 (void)BIO_flush(fbio);
2587 /* wait for multi-line CAPABILITIES response */
2588 do {
2589 mbuf_len = BIO_gets(fbio, mbuf, BUFSIZZ);
2590 if (strstr(mbuf, "STARTTLS"))
2591 foundit = 1;
2592 } while (mbuf_len > 1 && mbuf[0] != '.');
2593 (void)BIO_flush(fbio);
2594 BIO_pop(fbio);
2595 BIO_free(fbio);
2596 if (!foundit)
2597 BIO_printf(bio_err,
2598 "Didn't find STARTTLS in server response,"
2599 " trying anyway...\n");
2600 BIO_printf(sbio, "STARTTLS\r\n");
2601 mbuf_len = BIO_read(sbio, mbuf, BUFSIZZ);
2602 if (mbuf_len < 0) {
2603 BIO_printf(bio_err, "BIO_read failed\n");
2604 goto end;
2605 }
2606 mbuf[mbuf_len] = '\0';
2607 if (strstr(mbuf, "382") == NULL) {
2608 BIO_printf(bio_err, "STARTTLS failed: %s", mbuf);
2609 goto shut;
2610 }
2611 }
2612 break;
2613 case PROTO_SIEVE:
2614 {
2615 int foundit = 0;
2616 BIO *fbio = BIO_new(BIO_f_buffer());
2617
2618 BIO_push(fbio, sbio);
2619 /* wait for multi-line response to end from Sieve */
2620 do {
2621 mbuf_len = BIO_gets(fbio, mbuf, BUFSIZZ);
2622 /*
2623 * According to RFC 5804 § 1.7, capability
2624 * is case-insensitive, make it uppercase
2625 */
2626 if (mbuf_len > 1 && mbuf[0] == '"') {
2627 make_uppercase(mbuf);
2628 if (strncmp(mbuf, "\"STARTTLS\"", 10) == 0)
2629 foundit = 1;
2630 }
2631 } while (mbuf_len > 1 && mbuf[0] == '"');
2632 (void)BIO_flush(fbio);
2633 BIO_pop(fbio);
2634 BIO_free(fbio);
2635 if (!foundit)
2636 BIO_printf(bio_err,
2637 "Didn't find STARTTLS in server response,"
2638 " trying anyway...\n");
2639 BIO_printf(sbio, "STARTTLS\r\n");
2640 mbuf_len = BIO_read(sbio, mbuf, BUFSIZZ);
2641 if (mbuf_len < 0) {
2642 BIO_printf(bio_err, "BIO_read failed\n");
2643 goto end;
2644 }
2645 mbuf[mbuf_len] = '\0';
2646 if (mbuf_len < 2) {
2647 BIO_printf(bio_err, "STARTTLS failed: %s", mbuf);
2648 goto shut;
2649 }
2650 /*
2651 * According to RFC 5804 § 2.2, response codes are case-
2652 * insensitive, make it uppercase but preserve the response.
2653 */
2654 strncpy(sbuf, mbuf, 2);
2655 make_uppercase(sbuf);
2656 if (strncmp(sbuf, "OK", 2) != 0) {
2657 BIO_printf(bio_err, "STARTTLS not supported: %s", mbuf);
2658 goto shut;
2659 }
2660 }
2661 break;
2662 case PROTO_LDAP:
2663 {
2664 /* StartTLS Operation according to RFC 4511 */
2665 static char ldap_tls_genconf[] = "asn1=SEQUENCE:LDAPMessage\n"
2666 "[LDAPMessage]\n"
2667 "messageID=INTEGER:1\n"
2668 "extendedReq=EXPLICIT:23A,IMPLICIT:0C,"
2669 "FORMAT:ASCII,OCT:1.3.6.1.4.1.1466.20037\n";
2670 long errline = -1;
2671 char *genstr = NULL;
2672 int result = -1;
2673 ASN1_TYPE *atyp = NULL;
2674 BIO *ldapbio = BIO_new(BIO_s_mem());
2675 CONF *cnf = NCONF_new(NULL);
2676
2677 if (cnf == NULL) {
2678 BIO_free(ldapbio);
2679 goto end;
2680 }
2681 BIO_puts(ldapbio, ldap_tls_genconf);
2682 if (NCONF_load_bio(cnf, ldapbio, &errline) <= 0) {
2683 BIO_free(ldapbio);
2684 NCONF_free(cnf);
2685 if (errline <= 0) {
2686 BIO_printf(bio_err, "NCONF_load_bio failed\n");
2687 goto end;
2688 } else {
2689 BIO_printf(bio_err, "Error on line %ld\n", errline);
2690 goto end;
2691 }
2692 }
2693 BIO_free(ldapbio);
2694 genstr = NCONF_get_string(cnf, "default", "asn1");
2695 if (genstr == NULL) {
2696 NCONF_free(cnf);
2697 BIO_printf(bio_err, "NCONF_get_string failed\n");
2698 goto end;
2699 }
2700 atyp = ASN1_generate_nconf(genstr, cnf);
2701 if (atyp == NULL) {
2702 NCONF_free(cnf);
2703 BIO_printf(bio_err, "ASN1_generate_nconf failed\n");
2704 goto end;
2705 }
2706 NCONF_free(cnf);
2707
2708 /* Send SSLRequest packet */
2709 BIO_write(sbio, atyp->value.sequence->data,
2710 atyp->value.sequence->length);
2711 (void)BIO_flush(sbio);
2712 ASN1_TYPE_free(atyp);
2713
2714 mbuf_len = BIO_read(sbio, mbuf, BUFSIZZ);
2715 if (mbuf_len < 0) {
2716 BIO_printf(bio_err, "BIO_read failed\n");
2717 goto end;
2718 }
2719 result = ldap_ExtendedResponse_parse(mbuf, mbuf_len);
2720 if (result < 0) {
2721 BIO_printf(bio_err, "ldap_ExtendedResponse_parse failed\n");
2722 goto shut;
2723 } else if (result > 0) {
2724 BIO_printf(bio_err, "STARTTLS failed, LDAP Result Code: %i\n",
2725 result);
2726 goto shut;
2727 }
2728 mbuf_len = 0;
2729 }
2730 break;
2731 }
2732
2733 if (early_data_file != NULL
2734 && ((SSL_get0_session(con) != NULL
2735 && SSL_SESSION_get_max_early_data(SSL_get0_session(con)) > 0)
2736 || (psksess != NULL
2737 && SSL_SESSION_get_max_early_data(psksess) > 0))) {
2738 BIO *edfile = BIO_new_file(early_data_file, "r");
2739 size_t readbytes, writtenbytes;
2740 int finish = 0;
2741
2742 if (edfile == NULL) {
2743 BIO_printf(bio_err, "Cannot open early data file\n");
2744 goto shut;
2745 }
2746
2747 while (!finish) {
2748 if (!BIO_read_ex(edfile, cbuf, BUFSIZZ, &readbytes))
2749 finish = 1;
2750
2751 while (!SSL_write_early_data(con, cbuf, readbytes, &writtenbytes)) {
2752 switch (SSL_get_error(con, 0)) {
2753 case SSL_ERROR_WANT_WRITE:
2754 case SSL_ERROR_WANT_ASYNC:
2755 case SSL_ERROR_WANT_READ:
2756 /* Just keep trying - busy waiting */
2757 continue;
2758 default:
2759 BIO_printf(bio_err, "Error writing early data\n");
2760 BIO_free(edfile);
2761 ERR_print_errors(bio_err);
2762 goto shut;
2763 }
2764 }
2765 }
2766
2767 BIO_free(edfile);
2768 }
2769
2770 for (;;) {
2771 FD_ZERO(&readfds);
2772 FD_ZERO(&writefds);
2773
2774 if (SSL_is_dtls(con) && DTLSv1_get_timeout(con, &timeout))
2775 timeoutp = &timeout;
2776 else
2777 timeoutp = NULL;
2778
2779 if (!SSL_is_init_finished(con) && SSL_total_renegotiations(con) == 0
2780 && SSL_get_key_update_type(con) == SSL_KEY_UPDATE_NONE) {
2781 in_init = 1;
2782 tty_on = 0;
2783 } else {
2784 tty_on = 1;
2785 if (in_init) {
2786 in_init = 0;
2787
2788 if (c_brief) {
2789 BIO_puts(bio_err, "CONNECTION ESTABLISHED\n");
2790 print_ssl_summary(con);
2791 }
2792
2793 print_stuff(bio_c_out, con, full_log);
2794 if (full_log > 0)
2795 full_log--;
2796
2797 if (starttls_proto) {
2798 BIO_write(bio_err, mbuf, mbuf_len);
2799 /* We don't need to know any more */
2800 if (!reconnect)
2801 starttls_proto = PROTO_OFF;
2802 }
2803
2804 if (reconnect) {
2805 reconnect--;
2806 BIO_printf(bio_c_out,
2807 "drop connection and then reconnect\n");
2808 do_ssl_shutdown(con);
2809 SSL_set_connect_state(con);
2810 BIO_closesocket(SSL_get_fd(con));
2811 goto re_start;
2812 }
2813 }
2814 }
2815
2816 ssl_pending = read_ssl && SSL_has_pending(con);
2817
2818 if (!ssl_pending) {
2819 #if !defined(OPENSSL_SYS_WINDOWS) && !defined(OPENSSL_SYS_MSDOS)
2820 if (tty_on) {
2821 /*
2822 * Note that select() returns when read _would not block_,
2823 * and EOF satisfies that. To avoid a CPU-hogging loop,
2824 * set the flag so we exit.
2825 */
2826 if (read_tty && !at_eof)
2827 openssl_fdset(fileno_stdin(), &readfds);
2828 #if !defined(OPENSSL_SYS_VMS)
2829 if (write_tty)
2830 openssl_fdset(fileno_stdout(), &writefds);
2831 #endif
2832 }
2833 if (read_ssl)
2834 openssl_fdset(SSL_get_fd(con), &readfds);
2835 if (write_ssl)
2836 openssl_fdset(SSL_get_fd(con), &writefds);
2837 #else
2838 if (!tty_on || !write_tty) {
2839 if (read_ssl)
2840 openssl_fdset(SSL_get_fd(con), &readfds);
2841 if (write_ssl)
2842 openssl_fdset(SSL_get_fd(con), &writefds);
2843 }
2844 #endif
2845
2846 /*
2847 * Note: under VMS with SOCKETSHR the second parameter is
2848 * currently of type (int *) whereas under other systems it is
2849 * (void *) if you don't have a cast it will choke the compiler:
2850 * if you do have a cast then you can either go for (int *) or
2851 * (void *).
2852 */
2853 #if defined(OPENSSL_SYS_WINDOWS) || defined(OPENSSL_SYS_MSDOS)
2854 /*
2855 * Under Windows/DOS we make the assumption that we can always
2856 * write to the tty: therefore if we need to write to the tty we
2857 * just fall through. Otherwise we timeout the select every
2858 * second and see if there are any keypresses. Note: this is a
2859 * hack, in a proper Windows application we wouldn't do this.
2860 */
2861 i = 0;
2862 if (!write_tty) {
2863 if (read_tty) {
2864 tv.tv_sec = 1;
2865 tv.tv_usec = 0;
2866 i = select(width, (void *)&readfds, (void *)&writefds,
2867 NULL, &tv);
2868 if (!i && (!has_stdin_waiting() || !read_tty))
2869 continue;
2870 } else
2871 i = select(width, (void *)&readfds, (void *)&writefds,
2872 NULL, timeoutp);
2873 }
2874 #else
2875 i = select(width, (void *)&readfds, (void *)&writefds,
2876 NULL, timeoutp);
2877 #endif
2878 if (i < 0) {
2879 BIO_printf(bio_err, "bad select %d\n",
2880 get_last_socket_error());
2881 goto shut;
2882 }
2883 }
2884
2885 if (SSL_is_dtls(con) && DTLSv1_handle_timeout(con) > 0)
2886 BIO_printf(bio_err, "TIMEOUT occurred\n");
2887
2888 if (!ssl_pending && FD_ISSET(SSL_get_fd(con), &writefds)) {
2889 k = SSL_write(con, &(cbuf[cbuf_off]), (unsigned int)cbuf_len);
2890 switch (SSL_get_error(con, k)) {
2891 case SSL_ERROR_NONE:
2892 cbuf_off += k;
2893 cbuf_len -= k;
2894 if (k <= 0)
2895 goto end;
2896 /* we have done a write(con,NULL,0); */
2897 if (cbuf_len <= 0) {
2898 read_tty = 1;
2899 write_ssl = 0;
2900 } else { /* if (cbuf_len > 0) */
2901
2902 read_tty = 0;
2903 write_ssl = 1;
2904 }
2905 break;
2906 case SSL_ERROR_WANT_WRITE:
2907 BIO_printf(bio_c_out, "write W BLOCK\n");
2908 write_ssl = 1;
2909 read_tty = 0;
2910 break;
2911 case SSL_ERROR_WANT_ASYNC:
2912 BIO_printf(bio_c_out, "write A BLOCK\n");
2913 wait_for_async(con);
2914 write_ssl = 1;
2915 read_tty = 0;
2916 break;
2917 case SSL_ERROR_WANT_READ:
2918 BIO_printf(bio_c_out, "write R BLOCK\n");
2919 write_tty = 0;
2920 read_ssl = 1;
2921 write_ssl = 0;
2922 break;
2923 case SSL_ERROR_WANT_X509_LOOKUP:
2924 BIO_printf(bio_c_out, "write X BLOCK\n");
2925 break;
2926 case SSL_ERROR_ZERO_RETURN:
2927 if (cbuf_len != 0) {
2928 BIO_printf(bio_c_out, "shutdown\n");
2929 ret = 0;
2930 goto shut;
2931 } else {
2932 read_tty = 1;
2933 write_ssl = 0;
2934 break;
2935 }
2936
2937 case SSL_ERROR_SYSCALL:
2938 if ((k != 0) || (cbuf_len != 0)) {
2939 BIO_printf(bio_err, "write:errno=%d\n",
2940 get_last_socket_error());
2941 goto shut;
2942 } else {
2943 read_tty = 1;
2944 write_ssl = 0;
2945 }
2946 break;
2947 case SSL_ERROR_WANT_ASYNC_JOB:
2948 /* This shouldn't ever happen in s_client - treat as an error */
2949 case SSL_ERROR_SSL:
2950 ERR_print_errors(bio_err);
2951 goto shut;
2952 }
2953 }
2954 #if defined(OPENSSL_SYS_WINDOWS) || defined(OPENSSL_SYS_MSDOS) || defined(OPENSSL_SYS_VMS)
2955 /* Assume Windows/DOS/BeOS can always write */
2956 else if (!ssl_pending && write_tty)
2957 #else
2958 else if (!ssl_pending && FD_ISSET(fileno_stdout(), &writefds))
2959 #endif
2960 {
2961 #ifdef CHARSET_EBCDIC
2962 ascii2ebcdic(&(sbuf[sbuf_off]), &(sbuf[sbuf_off]), sbuf_len);
2963 #endif
2964 i = raw_write_stdout(&(sbuf[sbuf_off]), sbuf_len);
2965
2966 if (i <= 0) {
2967 BIO_printf(bio_c_out, "DONE\n");
2968 ret = 0;
2969 goto shut;
2970 }
2971
2972 sbuf_len -= i;
2973 sbuf_off += i;
2974 if (sbuf_len <= 0) {
2975 read_ssl = 1;
2976 write_tty = 0;
2977 }
2978 } else if (ssl_pending || FD_ISSET(SSL_get_fd(con), &readfds)) {
2979 #ifdef RENEG
2980 {
2981 static int iiii;
2982 if (++iiii == 52) {
2983 SSL_renegotiate(con);
2984 iiii = 0;
2985 }
2986 }
2987 #endif
2988 k = SSL_read(con, sbuf, 1024 /* BUFSIZZ */ );
2989
2990 switch (SSL_get_error(con, k)) {
2991 case SSL_ERROR_NONE:
2992 if (k <= 0)
2993 goto end;
2994 sbuf_off = 0;
2995 sbuf_len = k;
2996
2997 read_ssl = 0;
2998 write_tty = 1;
2999 break;
3000 case SSL_ERROR_WANT_ASYNC:
3001 BIO_printf(bio_c_out, "read A BLOCK\n");
3002 wait_for_async(con);
3003 write_tty = 0;
3004 read_ssl = 1;
3005 if ((read_tty == 0) && (write_ssl == 0))
3006 write_ssl = 1;
3007 break;
3008 case SSL_ERROR_WANT_WRITE:
3009 BIO_printf(bio_c_out, "read W BLOCK\n");
3010 write_ssl = 1;
3011 read_tty = 0;
3012 break;
3013 case SSL_ERROR_WANT_READ:
3014 BIO_printf(bio_c_out, "read R BLOCK\n");
3015 write_tty = 0;
3016 read_ssl = 1;
3017 if ((read_tty == 0) && (write_ssl == 0))
3018 write_ssl = 1;
3019 break;
3020 case SSL_ERROR_WANT_X509_LOOKUP:
3021 BIO_printf(bio_c_out, "read X BLOCK\n");
3022 break;
3023 case SSL_ERROR_SYSCALL:
3024 ret = get_last_socket_error();
3025 if (c_brief)
3026 BIO_puts(bio_err, "CONNECTION CLOSED BY SERVER\n");
3027 else
3028 BIO_printf(bio_err, "read:errno=%d\n", ret);
3029 goto shut;
3030 case SSL_ERROR_ZERO_RETURN:
3031 BIO_printf(bio_c_out, "closed\n");
3032 ret = 0;
3033 goto shut;
3034 case SSL_ERROR_WANT_ASYNC_JOB:
3035 /* This shouldn't ever happen in s_client. Treat as an error */
3036 case SSL_ERROR_SSL:
3037 ERR_print_errors(bio_err);
3038 goto shut;
3039 }
3040 }
3041 /* OPENSSL_SYS_MSDOS includes OPENSSL_SYS_WINDOWS */
3042 #if defined(OPENSSL_SYS_MSDOS)
3043 else if (has_stdin_waiting())
3044 #else
3045 else if (FD_ISSET(fileno_stdin(), &readfds))
3046 #endif
3047 {
3048 if (crlf) {
3049 int j, lf_num;
3050
3051 i = raw_read_stdin(cbuf, BUFSIZZ / 2);
3052 lf_num = 0;
3053 /* both loops are skipped when i <= 0 */
3054 for (j = 0; j < i; j++)
3055 if (cbuf[j] == '\n')
3056 lf_num++;
3057 for (j = i - 1; j >= 0; j--) {
3058 cbuf[j + lf_num] = cbuf[j];
3059 if (cbuf[j] == '\n') {
3060 lf_num--;
3061 i++;
3062 cbuf[j + lf_num] = '\r';
3063 }
3064 }
3065 assert(lf_num == 0);
3066 } else
3067 i = raw_read_stdin(cbuf, BUFSIZZ);
3068 #if !defined(OPENSSL_SYS_WINDOWS) && !defined(OPENSSL_SYS_MSDOS)
3069 if (i == 0)
3070 at_eof = 1;
3071 #endif
3072
3073 if ((!c_ign_eof) && ((i <= 0) || (cbuf[0] == 'Q' && cmdletters))) {
3074 BIO_printf(bio_err, "DONE\n");
3075 ret = 0;
3076 goto shut;
3077 }
3078
3079 if ((!c_ign_eof) && (cbuf[0] == 'R' && cmdletters)) {
3080 BIO_printf(bio_err, "RENEGOTIATING\n");
3081 SSL_renegotiate(con);
3082 cbuf_len = 0;
3083 } else if (!c_ign_eof && (cbuf[0] == 'K' || cbuf[0] == 'k' )
3084 && cmdletters) {
3085 BIO_printf(bio_err, "KEYUPDATE\n");
3086 SSL_key_update(con,
3087 cbuf[0] == 'K' ? SSL_KEY_UPDATE_REQUESTED
3088 : SSL_KEY_UPDATE_NOT_REQUESTED);
3089 cbuf_len = 0;
3090 }
3091 #ifndef OPENSSL_NO_HEARTBEATS
3092 else if ((!c_ign_eof) && (cbuf[0] == 'B' && cmdletters)) {
3093 BIO_printf(bio_err, "HEARTBEATING\n");
3094 SSL_heartbeat(con);
3095 cbuf_len = 0;
3096 }
3097 #endif
3098 else {
3099 cbuf_len = i;
3100 cbuf_off = 0;
3101 #ifdef CHARSET_EBCDIC
3102 ebcdic2ascii(cbuf, cbuf, i);
3103 #endif
3104 }
3105
3106 write_ssl = 1;
3107 read_tty = 0;
3108 }
3109 }
3110
3111 ret = 0;
3112 shut:
3113 if (in_init)
3114 print_stuff(bio_c_out, con, full_log);
3115 do_ssl_shutdown(con);
3116
3117 /*
3118 * If we ended with an alert being sent, but still with data in the
3119 * network buffer to be read, then calling BIO_closesocket() will
3120 * result in a TCP-RST being sent. On some platforms (notably
3121 * Windows) then this will result in the peer immediately abandoning
3122 * the connection including any buffered alert data before it has
3123 * had a chance to be read. Shutting down the sending side first,
3124 * and then closing the socket sends TCP-FIN first followed by
3125 * TCP-RST. This seems to allow the peer to read the alert data.
3126 */
3127 shutdown(SSL_get_fd(con), 1); /* SHUT_WR */
3128 /*
3129 * We just said we have nothing else to say, but it doesn't mean that
3130 * the other side has nothing. It's even recommended to consume incoming
3131 * data. [In testing context this ensures that alerts are passed on...]
3132 */
3133 timeout.tv_sec = 0;
3134 timeout.tv_usec = 500000; /* some extreme round-trip */
3135 do {
3136 FD_ZERO(&readfds);
3137 openssl_fdset(s, &readfds);
3138 } while (select(s + 1, &readfds, NULL, NULL, &timeout) > 0
3139 && BIO_read(sbio, sbuf, BUFSIZZ) > 0);
3140
3141 BIO_closesocket(SSL_get_fd(con));
3142 end:
3143 if (con != NULL) {
3144 if (prexit != 0)
3145 print_stuff(bio_c_out, con, 1);
3146 SSL_free(con);
3147 }
3148 SSL_SESSION_free(psksess);
3149 #if !defined(OPENSSL_NO_NEXTPROTONEG)
3150 OPENSSL_free(next_proto.data);
3151 #endif
3152 SSL_CTX_free(ctx);
3153 set_keylog_file(NULL, NULL);
3154 X509_free(cert);
3155 sk_X509_CRL_pop_free(crls, X509_CRL_free);
3156 EVP_PKEY_free(key);
3157 sk_X509_pop_free(chain, X509_free);
3158 OPENSSL_free(pass);
3159 #ifndef OPENSSL_NO_SRP
3160 OPENSSL_free(srp_arg.srppassin);
3161 #endif
3162 OPENSSL_free(sname_alloc);
3163 OPENSSL_free(connectstr);
3164 OPENSSL_free(bindstr);
3165 OPENSSL_free(bindhost);
3166 OPENSSL_free(bindport);
3167 OPENSSL_free(host);
3168 OPENSSL_free(port);
3169 X509_VERIFY_PARAM_free(vpm);
3170 ssl_excert_free(exc);
3171 sk_OPENSSL_STRING_free(ssl_args);
3172 sk_OPENSSL_STRING_free(dane_tlsa_rrset);
3173 SSL_CONF_CTX_free(cctx);
3174 OPENSSL_clear_free(cbuf, BUFSIZZ);
3175 OPENSSL_clear_free(sbuf, BUFSIZZ);
3176 OPENSSL_clear_free(mbuf, BUFSIZZ);
3177 release_engine(e);
3178 BIO_free(bio_c_out);
3179 bio_c_out = NULL;
3180 BIO_free(bio_c_msg);
3181 bio_c_msg = NULL;
3182 return ret;
3183 }
3184
print_stuff(BIO * bio,SSL * s,int full)3185 static void print_stuff(BIO *bio, SSL *s, int full)
3186 {
3187 X509 *peer = NULL;
3188 STACK_OF(X509) *sk;
3189 const SSL_CIPHER *c;
3190 int i, istls13 = (SSL_version(s) == TLS1_3_VERSION);
3191 long verify_result;
3192 #ifndef OPENSSL_NO_COMP
3193 const COMP_METHOD *comp, *expansion;
3194 #endif
3195 unsigned char *exportedkeymat;
3196 #ifndef OPENSSL_NO_CT
3197 const SSL_CTX *ctx = SSL_get_SSL_CTX(s);
3198 #endif
3199
3200 if (full) {
3201 int got_a_chain = 0;
3202
3203 sk = SSL_get_peer_cert_chain(s);
3204 if (sk != NULL) {
3205 got_a_chain = 1;
3206
3207 BIO_printf(bio, "---\nCertificate chain\n");
3208 for (i = 0; i < sk_X509_num(sk); i++) {
3209 BIO_printf(bio, "%2d s:", i);
3210 X509_NAME_print_ex(bio, X509_get_subject_name(sk_X509_value(sk, i)), 0, get_nameopt());
3211 BIO_puts(bio, "\n");
3212 BIO_printf(bio, " i:");
3213 X509_NAME_print_ex(bio, X509_get_issuer_name(sk_X509_value(sk, i)), 0, get_nameopt());
3214 BIO_puts(bio, "\n");
3215 if (c_showcerts)
3216 PEM_write_bio_X509(bio, sk_X509_value(sk, i));
3217 }
3218 }
3219
3220 BIO_printf(bio, "---\n");
3221 peer = SSL_get_peer_certificate(s);
3222 if (peer != NULL) {
3223 BIO_printf(bio, "Server certificate\n");
3224
3225 /* Redundant if we showed the whole chain */
3226 if (!(c_showcerts && got_a_chain))
3227 PEM_write_bio_X509(bio, peer);
3228 dump_cert_text(bio, peer);
3229 } else {
3230 BIO_printf(bio, "no peer certificate available\n");
3231 }
3232 print_ca_names(bio, s);
3233
3234 ssl_print_sigalgs(bio, s);
3235 ssl_print_tmp_key(bio, s);
3236
3237 #ifndef OPENSSL_NO_CT
3238 /*
3239 * When the SSL session is anonymous, or resumed via an abbreviated
3240 * handshake, no SCTs are provided as part of the handshake. While in
3241 * a resumed session SCTs may be present in the session's certificate,
3242 * no callbacks are invoked to revalidate these, and in any case that
3243 * set of SCTs may be incomplete. Thus it makes little sense to
3244 * attempt to display SCTs from a resumed session's certificate, and of
3245 * course none are associated with an anonymous peer.
3246 */
3247 if (peer != NULL && !SSL_session_reused(s) && SSL_ct_is_enabled(s)) {
3248 const STACK_OF(SCT) *scts = SSL_get0_peer_scts(s);
3249 int sct_count = scts != NULL ? sk_SCT_num(scts) : 0;
3250
3251 BIO_printf(bio, "---\nSCTs present (%i)\n", sct_count);
3252 if (sct_count > 0) {
3253 const CTLOG_STORE *log_store = SSL_CTX_get0_ctlog_store(ctx);
3254
3255 BIO_printf(bio, "---\n");
3256 for (i = 0; i < sct_count; ++i) {
3257 SCT *sct = sk_SCT_value(scts, i);
3258
3259 BIO_printf(bio, "SCT validation status: %s\n",
3260 SCT_validation_status_string(sct));
3261 SCT_print(sct, bio, 0, log_store);
3262 if (i < sct_count - 1)
3263 BIO_printf(bio, "\n---\n");
3264 }
3265 BIO_printf(bio, "\n");
3266 }
3267 }
3268 #endif
3269
3270 BIO_printf(bio,
3271 "---\nSSL handshake has read %ju bytes "
3272 "and written %ju bytes\n",
3273 BIO_number_read(SSL_get_rbio(s)),
3274 BIO_number_written(SSL_get_wbio(s)));
3275 }
3276 print_verify_detail(s, bio);
3277 BIO_printf(bio, (SSL_session_reused(s) ? "---\nReused, " : "---\nNew, "));
3278 c = SSL_get_current_cipher(s);
3279 BIO_printf(bio, "%s, Cipher is %s\n",
3280 SSL_CIPHER_get_version(c), SSL_CIPHER_get_name(c));
3281 if (peer != NULL) {
3282 EVP_PKEY *pktmp;
3283
3284 pktmp = X509_get0_pubkey(peer);
3285 BIO_printf(bio, "Server public key is %d bit\n",
3286 EVP_PKEY_bits(pktmp));
3287 }
3288 BIO_printf(bio, "Secure Renegotiation IS%s supported\n",
3289 SSL_get_secure_renegotiation_support(s) ? "" : " NOT");
3290 #ifndef OPENSSL_NO_COMP
3291 comp = SSL_get_current_compression(s);
3292 expansion = SSL_get_current_expansion(s);
3293 BIO_printf(bio, "Compression: %s\n",
3294 comp ? SSL_COMP_get_name(comp) : "NONE");
3295 BIO_printf(bio, "Expansion: %s\n",
3296 expansion ? SSL_COMP_get_name(expansion) : "NONE");
3297 #endif
3298 #ifndef OPENSSL_NO_KTLS
3299 if (BIO_get_ktls_send(SSL_get_wbio(s)))
3300 BIO_printf(bio_err, "Using Kernel TLS for sending\n");
3301 if (BIO_get_ktls_recv(SSL_get_rbio(s)))
3302 BIO_printf(bio_err, "Using Kernel TLS for receiving\n");
3303 #endif
3304
3305 #ifdef SSL_DEBUG
3306 {
3307 /* Print out local port of connection: useful for debugging */
3308 int sock;
3309 union BIO_sock_info_u info;
3310
3311 sock = SSL_get_fd(s);
3312 if ((info.addr = BIO_ADDR_new()) != NULL
3313 && BIO_sock_info(sock, BIO_SOCK_INFO_ADDRESS, &info)) {
3314 BIO_printf(bio_c_out, "LOCAL PORT is %u\n",
3315 ntohs(BIO_ADDR_rawport(info.addr)));
3316 }
3317 BIO_ADDR_free(info.addr);
3318 }
3319 #endif
3320
3321 #if !defined(OPENSSL_NO_NEXTPROTONEG)
3322 if (next_proto.status != -1) {
3323 const unsigned char *proto;
3324 unsigned int proto_len;
3325 SSL_get0_next_proto_negotiated(s, &proto, &proto_len);
3326 BIO_printf(bio, "Next protocol: (%d) ", next_proto.status);
3327 BIO_write(bio, proto, proto_len);
3328 BIO_write(bio, "\n", 1);
3329 }
3330 #endif
3331 {
3332 const unsigned char *proto;
3333 unsigned int proto_len;
3334 SSL_get0_alpn_selected(s, &proto, &proto_len);
3335 if (proto_len > 0) {
3336 BIO_printf(bio, "ALPN protocol: ");
3337 BIO_write(bio, proto, proto_len);
3338 BIO_write(bio, "\n", 1);
3339 } else
3340 BIO_printf(bio, "No ALPN negotiated\n");
3341 }
3342
3343 #ifndef OPENSSL_NO_SRTP
3344 {
3345 SRTP_PROTECTION_PROFILE *srtp_profile =
3346 SSL_get_selected_srtp_profile(s);
3347
3348 if (srtp_profile)
3349 BIO_printf(bio, "SRTP Extension negotiated, profile=%s\n",
3350 srtp_profile->name);
3351 }
3352 #endif
3353
3354 if (istls13) {
3355 switch (SSL_get_early_data_status(s)) {
3356 case SSL_EARLY_DATA_NOT_SENT:
3357 BIO_printf(bio, "Early data was not sent\n");
3358 break;
3359
3360 case SSL_EARLY_DATA_REJECTED:
3361 BIO_printf(bio, "Early data was rejected\n");
3362 break;
3363
3364 case SSL_EARLY_DATA_ACCEPTED:
3365 BIO_printf(bio, "Early data was accepted\n");
3366 break;
3367
3368 }
3369
3370 /*
3371 * We also print the verify results when we dump session information,
3372 * but in TLSv1.3 we may not get that right away (or at all) depending
3373 * on when we get a NewSessionTicket. Therefore we print it now as well.
3374 */
3375 verify_result = SSL_get_verify_result(s);
3376 BIO_printf(bio, "Verify return code: %ld (%s)\n", verify_result,
3377 X509_verify_cert_error_string(verify_result));
3378 } else {
3379 /* In TLSv1.3 we do this on arrival of a NewSessionTicket */
3380 SSL_SESSION_print(bio, SSL_get_session(s));
3381 }
3382
3383 if (SSL_get_session(s) != NULL && keymatexportlabel != NULL) {
3384 BIO_printf(bio, "Keying material exporter:\n");
3385 BIO_printf(bio, " Label: '%s'\n", keymatexportlabel);
3386 BIO_printf(bio, " Length: %i bytes\n", keymatexportlen);
3387 exportedkeymat = app_malloc(keymatexportlen, "export key");
3388 if (!SSL_export_keying_material(s, exportedkeymat,
3389 keymatexportlen,
3390 keymatexportlabel,
3391 strlen(keymatexportlabel),
3392 NULL, 0, 0)) {
3393 BIO_printf(bio, " Error\n");
3394 } else {
3395 BIO_printf(bio, " Keying material: ");
3396 for (i = 0; i < keymatexportlen; i++)
3397 BIO_printf(bio, "%02X", exportedkeymat[i]);
3398 BIO_printf(bio, "\n");
3399 }
3400 OPENSSL_free(exportedkeymat);
3401 }
3402 BIO_printf(bio, "---\n");
3403 X509_free(peer);
3404 /* flush, or debugging output gets mixed with http response */
3405 (void)BIO_flush(bio);
3406 }
3407
3408 # ifndef OPENSSL_NO_OCSP
ocsp_resp_cb(SSL * s,void * arg)3409 static int ocsp_resp_cb(SSL *s, void *arg)
3410 {
3411 const unsigned char *p;
3412 int len;
3413 OCSP_RESPONSE *rsp;
3414 len = SSL_get_tlsext_status_ocsp_resp(s, &p);
3415 BIO_puts(arg, "OCSP response: ");
3416 if (p == NULL) {
3417 BIO_puts(arg, "no response sent\n");
3418 return 1;
3419 }
3420 rsp = d2i_OCSP_RESPONSE(NULL, &p, len);
3421 if (rsp == NULL) {
3422 BIO_puts(arg, "response parse error\n");
3423 BIO_dump_indent(arg, (char *)p, len, 4);
3424 return 0;
3425 }
3426 BIO_puts(arg, "\n======================================\n");
3427 OCSP_RESPONSE_print(arg, rsp, 0);
3428 BIO_puts(arg, "======================================\n");
3429 OCSP_RESPONSE_free(rsp);
3430 return 1;
3431 }
3432 # endif
3433
ldap_ExtendedResponse_parse(const char * buf,long rem)3434 static int ldap_ExtendedResponse_parse(const char *buf, long rem)
3435 {
3436 const unsigned char *cur, *end;
3437 long len;
3438 int tag, xclass, inf, ret = -1;
3439
3440 cur = (const unsigned char *)buf;
3441 end = cur + rem;
3442
3443 /*
3444 * From RFC 4511:
3445 *
3446 * LDAPMessage ::= SEQUENCE {
3447 * messageID MessageID,
3448 * protocolOp CHOICE {
3449 * ...
3450 * extendedResp ExtendedResponse,
3451 * ... },
3452 * controls [0] Controls OPTIONAL }
3453 *
3454 * ExtendedResponse ::= [APPLICATION 24] SEQUENCE {
3455 * COMPONENTS OF LDAPResult,
3456 * responseName [10] LDAPOID OPTIONAL,
3457 * responseValue [11] OCTET STRING OPTIONAL }
3458 *
3459 * LDAPResult ::= SEQUENCE {
3460 * resultCode ENUMERATED {
3461 * success (0),
3462 * ...
3463 * other (80),
3464 * ... },
3465 * matchedDN LDAPDN,
3466 * diagnosticMessage LDAPString,
3467 * referral [3] Referral OPTIONAL }
3468 */
3469
3470 /* pull SEQUENCE */
3471 inf = ASN1_get_object(&cur, &len, &tag, &xclass, rem);
3472 if (inf != V_ASN1_CONSTRUCTED || tag != V_ASN1_SEQUENCE ||
3473 (rem = end - cur, len > rem)) {
3474 BIO_printf(bio_err, "Unexpected LDAP response\n");
3475 goto end;
3476 }
3477
3478 rem = len; /* ensure that we don't overstep the SEQUENCE */
3479
3480 /* pull MessageID */
3481 inf = ASN1_get_object(&cur, &len, &tag, &xclass, rem);
3482 if (inf != V_ASN1_UNIVERSAL || tag != V_ASN1_INTEGER ||
3483 (rem = end - cur, len > rem)) {
3484 BIO_printf(bio_err, "No MessageID\n");
3485 goto end;
3486 }
3487
3488 cur += len; /* shall we check for MessageId match or just skip? */
3489
3490 /* pull [APPLICATION 24] */
3491 rem = end - cur;
3492 inf = ASN1_get_object(&cur, &len, &tag, &xclass, rem);
3493 if (inf != V_ASN1_CONSTRUCTED || xclass != V_ASN1_APPLICATION ||
3494 tag != 24) {
3495 BIO_printf(bio_err, "Not ExtendedResponse\n");
3496 goto end;
3497 }
3498
3499 /* pull resultCode */
3500 rem = end - cur;
3501 inf = ASN1_get_object(&cur, &len, &tag, &xclass, rem);
3502 if (inf != V_ASN1_UNIVERSAL || tag != V_ASN1_ENUMERATED || len == 0 ||
3503 (rem = end - cur, len > rem)) {
3504 BIO_printf(bio_err, "Not LDAPResult\n");
3505 goto end;
3506 }
3507
3508 /* len should always be one, but just in case... */
3509 for (ret = 0, inf = 0; inf < len; inf++) {
3510 ret <<= 8;
3511 ret |= cur[inf];
3512 }
3513 /* There is more data, but we don't care... */
3514 end:
3515 return ret;
3516 }
3517
3518 /*
3519 * Host dNS Name verifier: used for checking that the hostname is in dNS format
3520 * before setting it as SNI
3521 */
is_dNS_name(const char * host)3522 static int is_dNS_name(const char *host)
3523 {
3524 const size_t MAX_LABEL_LENGTH = 63;
3525 size_t i;
3526 int isdnsname = 0;
3527 size_t length = strlen(host);
3528 size_t label_length = 0;
3529 int all_numeric = 1;
3530
3531 /*
3532 * Deviation from strict DNS name syntax, also check names with '_'
3533 * Check DNS name syntax, any '-' or '.' must be internal,
3534 * and on either side of each '.' we can't have a '-' or '.'.
3535 *
3536 * If the name has just one label, we don't consider it a DNS name.
3537 */
3538 for (i = 0; i < length && label_length < MAX_LABEL_LENGTH; ++i) {
3539 char c = host[i];
3540
3541 if ((c >= 'a' && c <= 'z')
3542 || (c >= 'A' && c <= 'Z')
3543 || c == '_') {
3544 label_length += 1;
3545 all_numeric = 0;
3546 continue;
3547 }
3548
3549 if (c >= '0' && c <= '9') {
3550 label_length += 1;
3551 continue;
3552 }
3553
3554 /* Dot and hyphen cannot be first or last. */
3555 if (i > 0 && i < length - 1) {
3556 if (c == '-') {
3557 label_length += 1;
3558 continue;
3559 }
3560 /*
3561 * Next to a dot the preceding and following characters must not be
3562 * another dot or a hyphen. Otherwise, record that the name is
3563 * plausible, since it has two or more labels.
3564 */
3565 if (c == '.'
3566 && host[i + 1] != '.'
3567 && host[i - 1] != '-'
3568 && host[i + 1] != '-') {
3569 label_length = 0;
3570 isdnsname = 1;
3571 continue;
3572 }
3573 }
3574 isdnsname = 0;
3575 break;
3576 }
3577
3578 /* dNS name must not be all numeric and labels must be shorter than 64 characters. */
3579 isdnsname &= !all_numeric && !(label_length == MAX_LABEL_LENGTH);
3580
3581 return isdnsname;
3582 }
3583 #endif /* OPENSSL_NO_SOCK */
3584