1 /*
2 * Copyright 1995-2022 The OpenSSL Project Authors. All Rights Reserved.
3 *
4 * Licensed under the OpenSSL license (the "License"). You may not use
5 * this file except in compliance with the License. You can obtain a copy
6 * in the file LICENSE in the source distribution or at
7 * https://www.openssl.org/source/license.html
8 */
9
10 /* callback functions used by s_client, s_server, and s_time */
11 #include <stdio.h>
12 #include <stdlib.h>
13 #include <string.h> /* for memcpy() and strcmp() */
14 #include "apps.h"
15 #include <openssl/err.h>
16 #include <openssl/rand.h>
17 #include <openssl/x509.h>
18 #include <openssl/ssl.h>
19 #include <openssl/bn.h>
20 #ifndef OPENSSL_NO_DH
21 # include <openssl/dh.h>
22 #endif
23 #include "s_apps.h"
24
25 #define COOKIE_SECRET_LENGTH 16
26
27 VERIFY_CB_ARGS verify_args = { -1, 0, X509_V_OK, 0 };
28
29 #ifndef OPENSSL_NO_SOCK
30 static unsigned char cookie_secret[COOKIE_SECRET_LENGTH];
31 static int cookie_initialized = 0;
32 #endif
33 static BIO *bio_keylog = NULL;
34
lookup(int val,const STRINT_PAIR * list,const char * def)35 static const char *lookup(int val, const STRINT_PAIR* list, const char* def)
36 {
37 for ( ; list->name; ++list)
38 if (list->retval == val)
39 return list->name;
40 return def;
41 }
42
verify_callback(int ok,X509_STORE_CTX * ctx)43 int verify_callback(int ok, X509_STORE_CTX *ctx)
44 {
45 X509 *err_cert;
46 int err, depth;
47
48 err_cert = X509_STORE_CTX_get_current_cert(ctx);
49 err = X509_STORE_CTX_get_error(ctx);
50 depth = X509_STORE_CTX_get_error_depth(ctx);
51
52 if (!verify_args.quiet || !ok) {
53 BIO_printf(bio_err, "depth=%d ", depth);
54 if (err_cert != NULL) {
55 X509_NAME_print_ex(bio_err,
56 X509_get_subject_name(err_cert),
57 0, get_nameopt());
58 BIO_puts(bio_err, "\n");
59 } else {
60 BIO_puts(bio_err, "<no cert>\n");
61 }
62 }
63 if (!ok) {
64 BIO_printf(bio_err, "verify error:num=%d:%s\n", err,
65 X509_verify_cert_error_string(err));
66 if (verify_args.depth < 0 || verify_args.depth >= depth) {
67 if (!verify_args.return_error)
68 ok = 1;
69 verify_args.error = err;
70 } else {
71 ok = 0;
72 verify_args.error = X509_V_ERR_CERT_CHAIN_TOO_LONG;
73 }
74 }
75 switch (err) {
76 case X509_V_ERR_UNABLE_TO_GET_ISSUER_CERT:
77 if (err_cert != NULL) {
78 BIO_puts(bio_err, "issuer= ");
79 X509_NAME_print_ex(bio_err, X509_get_issuer_name(err_cert),
80 0, get_nameopt());
81 BIO_puts(bio_err, "\n");
82 }
83 break;
84 case X509_V_ERR_CERT_NOT_YET_VALID:
85 case X509_V_ERR_ERROR_IN_CERT_NOT_BEFORE_FIELD:
86 if (err_cert != NULL) {
87 BIO_printf(bio_err, "notBefore=");
88 ASN1_TIME_print(bio_err, X509_get0_notBefore(err_cert));
89 BIO_printf(bio_err, "\n");
90 }
91 break;
92 case X509_V_ERR_CERT_HAS_EXPIRED:
93 case X509_V_ERR_ERROR_IN_CERT_NOT_AFTER_FIELD:
94 if (err_cert != NULL) {
95 BIO_printf(bio_err, "notAfter=");
96 ASN1_TIME_print(bio_err, X509_get0_notAfter(err_cert));
97 BIO_printf(bio_err, "\n");
98 }
99 break;
100 case X509_V_ERR_NO_EXPLICIT_POLICY:
101 if (!verify_args.quiet)
102 policies_print(ctx);
103 break;
104 }
105 if (err == X509_V_OK && ok == 2 && !verify_args.quiet)
106 policies_print(ctx);
107 if (ok && !verify_args.quiet)
108 BIO_printf(bio_err, "verify return:%d\n", ok);
109 return ok;
110 }
111
set_cert_stuff(SSL_CTX * ctx,char * cert_file,char * key_file)112 int set_cert_stuff(SSL_CTX *ctx, char *cert_file, char *key_file)
113 {
114 if (cert_file != NULL) {
115 if (SSL_CTX_use_certificate_file(ctx, cert_file,
116 SSL_FILETYPE_PEM) <= 0) {
117 BIO_printf(bio_err, "unable to get certificate from '%s'\n",
118 cert_file);
119 ERR_print_errors(bio_err);
120 return 0;
121 }
122 if (key_file == NULL)
123 key_file = cert_file;
124 if (SSL_CTX_use_PrivateKey_file(ctx, key_file, SSL_FILETYPE_PEM) <= 0) {
125 BIO_printf(bio_err, "unable to get private key from '%s'\n",
126 key_file);
127 ERR_print_errors(bio_err);
128 return 0;
129 }
130
131 /*
132 * If we are using DSA, we can copy the parameters from the private
133 * key
134 */
135
136 /*
137 * Now we know that a key and cert have been set against the SSL
138 * context
139 */
140 if (!SSL_CTX_check_private_key(ctx)) {
141 BIO_printf(bio_err,
142 "Private key does not match the certificate public key\n");
143 return 0;
144 }
145 }
146 return 1;
147 }
148
set_cert_key_stuff(SSL_CTX * ctx,X509 * cert,EVP_PKEY * key,STACK_OF (X509)* chain,int build_chain)149 int set_cert_key_stuff(SSL_CTX *ctx, X509 *cert, EVP_PKEY *key,
150 STACK_OF(X509) *chain, int build_chain)
151 {
152 int chflags = chain ? SSL_BUILD_CHAIN_FLAG_CHECK : 0;
153 if (cert == NULL)
154 return 1;
155 if (SSL_CTX_use_certificate(ctx, cert) <= 0) {
156 BIO_printf(bio_err, "error setting certificate\n");
157 ERR_print_errors(bio_err);
158 return 0;
159 }
160
161 if (SSL_CTX_use_PrivateKey(ctx, key) <= 0) {
162 BIO_printf(bio_err, "error setting private key\n");
163 ERR_print_errors(bio_err);
164 return 0;
165 }
166
167 /*
168 * Now we know that a key and cert have been set against the SSL context
169 */
170 if (!SSL_CTX_check_private_key(ctx)) {
171 BIO_printf(bio_err,
172 "Private key does not match the certificate public key\n");
173 return 0;
174 }
175 if (chain && !SSL_CTX_set1_chain(ctx, chain)) {
176 BIO_printf(bio_err, "error setting certificate chain\n");
177 ERR_print_errors(bio_err);
178 return 0;
179 }
180 if (build_chain && !SSL_CTX_build_cert_chain(ctx, chflags)) {
181 BIO_printf(bio_err, "error building certificate chain\n");
182 ERR_print_errors(bio_err);
183 return 0;
184 }
185 return 1;
186 }
187
188 static STRINT_PAIR cert_type_list[] = {
189 {"RSA sign", TLS_CT_RSA_SIGN},
190 {"DSA sign", TLS_CT_DSS_SIGN},
191 {"RSA fixed DH", TLS_CT_RSA_FIXED_DH},
192 {"DSS fixed DH", TLS_CT_DSS_FIXED_DH},
193 {"ECDSA sign", TLS_CT_ECDSA_SIGN},
194 {"RSA fixed ECDH", TLS_CT_RSA_FIXED_ECDH},
195 {"ECDSA fixed ECDH", TLS_CT_ECDSA_FIXED_ECDH},
196 {"GOST01 Sign", TLS_CT_GOST01_SIGN},
197 {"GOST12 Sign", TLS_CT_GOST12_SIGN},
198 {NULL}
199 };
200
ssl_print_client_cert_types(BIO * bio,SSL * s)201 static void ssl_print_client_cert_types(BIO *bio, SSL *s)
202 {
203 const unsigned char *p;
204 int i;
205 int cert_type_num = SSL_get0_certificate_types(s, &p);
206 if (!cert_type_num)
207 return;
208 BIO_puts(bio, "Client Certificate Types: ");
209 for (i = 0; i < cert_type_num; i++) {
210 unsigned char cert_type = p[i];
211 const char *cname = lookup((int)cert_type, cert_type_list, NULL);
212
213 if (i)
214 BIO_puts(bio, ", ");
215 if (cname != NULL)
216 BIO_puts(bio, cname);
217 else
218 BIO_printf(bio, "UNKNOWN (%d),", cert_type);
219 }
220 BIO_puts(bio, "\n");
221 }
222
get_sigtype(int nid)223 static const char *get_sigtype(int nid)
224 {
225 switch (nid) {
226 case EVP_PKEY_RSA:
227 return "RSA";
228
229 case EVP_PKEY_RSA_PSS:
230 return "RSA-PSS";
231
232 case EVP_PKEY_DSA:
233 return "DSA";
234
235 case EVP_PKEY_EC:
236 return "ECDSA";
237
238 case NID_ED25519:
239 return "Ed25519";
240
241 case NID_ED448:
242 return "Ed448";
243
244 case NID_id_GostR3410_2001:
245 return "gost2001";
246
247 case NID_id_GostR3410_2012_256:
248 return "gost2012_256";
249
250 case NID_id_GostR3410_2012_512:
251 return "gost2012_512";
252
253 default:
254 return NULL;
255 }
256 }
257
do_print_sigalgs(BIO * out,SSL * s,int shared)258 static int do_print_sigalgs(BIO *out, SSL *s, int shared)
259 {
260 int i, nsig, client;
261 client = SSL_is_server(s) ? 0 : 1;
262 if (shared)
263 nsig = SSL_get_shared_sigalgs(s, 0, NULL, NULL, NULL, NULL, NULL);
264 else
265 nsig = SSL_get_sigalgs(s, -1, NULL, NULL, NULL, NULL, NULL);
266 if (nsig == 0)
267 return 1;
268
269 if (shared)
270 BIO_puts(out, "Shared ");
271
272 if (client)
273 BIO_puts(out, "Requested ");
274 BIO_puts(out, "Signature Algorithms: ");
275 for (i = 0; i < nsig; i++) {
276 int hash_nid, sign_nid;
277 unsigned char rhash, rsign;
278 const char *sstr = NULL;
279 if (shared)
280 SSL_get_shared_sigalgs(s, i, &sign_nid, &hash_nid, NULL,
281 &rsign, &rhash);
282 else
283 SSL_get_sigalgs(s, i, &sign_nid, &hash_nid, NULL, &rsign, &rhash);
284 if (i)
285 BIO_puts(out, ":");
286 sstr = get_sigtype(sign_nid);
287 if (sstr)
288 BIO_printf(out, "%s", sstr);
289 else
290 BIO_printf(out, "0x%02X", (int)rsign);
291 if (hash_nid != NID_undef)
292 BIO_printf(out, "+%s", OBJ_nid2sn(hash_nid));
293 else if (sstr == NULL)
294 BIO_printf(out, "+0x%02X", (int)rhash);
295 }
296 BIO_puts(out, "\n");
297 return 1;
298 }
299
ssl_print_sigalgs(BIO * out,SSL * s)300 int ssl_print_sigalgs(BIO *out, SSL *s)
301 {
302 int nid;
303 if (!SSL_is_server(s))
304 ssl_print_client_cert_types(out, s);
305 do_print_sigalgs(out, s, 0);
306 do_print_sigalgs(out, s, 1);
307 if (SSL_get_peer_signature_nid(s, &nid) && nid != NID_undef)
308 BIO_printf(out, "Peer signing digest: %s\n", OBJ_nid2sn(nid));
309 if (SSL_get_peer_signature_type_nid(s, &nid))
310 BIO_printf(out, "Peer signature type: %s\n", get_sigtype(nid));
311 return 1;
312 }
313
314 #ifndef OPENSSL_NO_EC
ssl_print_point_formats(BIO * out,SSL * s)315 int ssl_print_point_formats(BIO *out, SSL *s)
316 {
317 int i, nformats;
318 const char *pformats;
319 nformats = SSL_get0_ec_point_formats(s, &pformats);
320 if (nformats <= 0)
321 return 1;
322 BIO_puts(out, "Supported Elliptic Curve Point Formats: ");
323 for (i = 0; i < nformats; i++, pformats++) {
324 if (i)
325 BIO_puts(out, ":");
326 switch (*pformats) {
327 case TLSEXT_ECPOINTFORMAT_uncompressed:
328 BIO_puts(out, "uncompressed");
329 break;
330
331 case TLSEXT_ECPOINTFORMAT_ansiX962_compressed_prime:
332 BIO_puts(out, "ansiX962_compressed_prime");
333 break;
334
335 case TLSEXT_ECPOINTFORMAT_ansiX962_compressed_char2:
336 BIO_puts(out, "ansiX962_compressed_char2");
337 break;
338
339 default:
340 BIO_printf(out, "unknown(%d)", (int)*pformats);
341 break;
342
343 }
344 }
345 BIO_puts(out, "\n");
346 return 1;
347 }
348
ssl_print_groups(BIO * out,SSL * s,int noshared)349 int ssl_print_groups(BIO *out, SSL *s, int noshared)
350 {
351 int i, ngroups, *groups, nid;
352 const char *gname;
353
354 ngroups = SSL_get1_groups(s, NULL);
355 if (ngroups <= 0)
356 return 1;
357 groups = app_malloc(ngroups * sizeof(int), "groups to print");
358 SSL_get1_groups(s, groups);
359
360 BIO_puts(out, "Supported Elliptic Groups: ");
361 for (i = 0; i < ngroups; i++) {
362 if (i)
363 BIO_puts(out, ":");
364 nid = groups[i];
365 /* If unrecognised print out hex version */
366 if (nid & TLSEXT_nid_unknown) {
367 BIO_printf(out, "0x%04X", nid & 0xFFFF);
368 } else {
369 /* TODO(TLS1.3): Get group name here */
370 /* Use NIST name for curve if it exists */
371 gname = EC_curve_nid2nist(nid);
372 if (gname == NULL)
373 gname = OBJ_nid2sn(nid);
374 BIO_printf(out, "%s", gname);
375 }
376 }
377 OPENSSL_free(groups);
378 if (noshared) {
379 BIO_puts(out, "\n");
380 return 1;
381 }
382 BIO_puts(out, "\nShared Elliptic groups: ");
383 ngroups = SSL_get_shared_group(s, -1);
384 for (i = 0; i < ngroups; i++) {
385 if (i)
386 BIO_puts(out, ":");
387 nid = SSL_get_shared_group(s, i);
388 /* TODO(TLS1.3): Convert for DH groups */
389 gname = EC_curve_nid2nist(nid);
390 if (gname == NULL)
391 gname = OBJ_nid2sn(nid);
392 BIO_printf(out, "%s", gname);
393 }
394 if (ngroups == 0)
395 BIO_puts(out, "NONE");
396 BIO_puts(out, "\n");
397 return 1;
398 }
399 #endif
400
ssl_print_tmp_key(BIO * out,SSL * s)401 int ssl_print_tmp_key(BIO *out, SSL *s)
402 {
403 EVP_PKEY *key;
404
405 if (!SSL_get_peer_tmp_key(s, &key))
406 return 1;
407 BIO_puts(out, "Server Temp Key: ");
408 switch (EVP_PKEY_id(key)) {
409 case EVP_PKEY_RSA:
410 BIO_printf(out, "RSA, %d bits\n", EVP_PKEY_bits(key));
411 break;
412
413 case EVP_PKEY_DH:
414 BIO_printf(out, "DH, %d bits\n", EVP_PKEY_bits(key));
415 break;
416 #ifndef OPENSSL_NO_EC
417 case EVP_PKEY_EC:
418 {
419 EC_KEY *ec = EVP_PKEY_get1_EC_KEY(key);
420 int nid;
421 const char *cname;
422 nid = EC_GROUP_get_curve_name(EC_KEY_get0_group(ec));
423 EC_KEY_free(ec);
424 cname = EC_curve_nid2nist(nid);
425 if (cname == NULL)
426 cname = OBJ_nid2sn(nid);
427 BIO_printf(out, "ECDH, %s, %d bits\n", cname, EVP_PKEY_bits(key));
428 }
429 break;
430 #endif
431 default:
432 BIO_printf(out, "%s, %d bits\n", OBJ_nid2sn(EVP_PKEY_id(key)),
433 EVP_PKEY_bits(key));
434 }
435 EVP_PKEY_free(key);
436 return 1;
437 }
438
bio_dump_callback(BIO * bio,int cmd,const char * argp,int argi,long argl,long ret)439 long bio_dump_callback(BIO *bio, int cmd, const char *argp,
440 int argi, long argl, long ret)
441 {
442 BIO *out;
443
444 out = (BIO *)BIO_get_callback_arg(bio);
445 if (out == NULL)
446 return ret;
447
448 if (cmd == (BIO_CB_READ | BIO_CB_RETURN)) {
449 BIO_printf(out, "read from %p [%p] (%lu bytes => %ld (0x%lX))\n",
450 (void *)bio, (void *)argp, (unsigned long)argi, ret, ret);
451 BIO_dump(out, argp, (int)ret);
452 return ret;
453 } else if (cmd == (BIO_CB_WRITE | BIO_CB_RETURN)) {
454 BIO_printf(out, "write to %p [%p] (%lu bytes => %ld (0x%lX))\n",
455 (void *)bio, (void *)argp, (unsigned long)argi, ret, ret);
456 BIO_dump(out, argp, (int)ret);
457 }
458 return ret;
459 }
460
apps_ssl_info_callback(const SSL * s,int where,int ret)461 void apps_ssl_info_callback(const SSL *s, int where, int ret)
462 {
463 const char *str;
464 int w;
465
466 w = where & ~SSL_ST_MASK;
467
468 if (w & SSL_ST_CONNECT)
469 str = "SSL_connect";
470 else if (w & SSL_ST_ACCEPT)
471 str = "SSL_accept";
472 else
473 str = "undefined";
474
475 if (where & SSL_CB_LOOP) {
476 BIO_printf(bio_err, "%s:%s\n", str, SSL_state_string_long(s));
477 } else if (where & SSL_CB_ALERT) {
478 str = (where & SSL_CB_READ) ? "read" : "write";
479 BIO_printf(bio_err, "SSL3 alert %s:%s:%s\n",
480 str,
481 SSL_alert_type_string_long(ret),
482 SSL_alert_desc_string_long(ret));
483 } else if (where & SSL_CB_EXIT) {
484 if (ret == 0)
485 BIO_printf(bio_err, "%s:failed in %s\n",
486 str, SSL_state_string_long(s));
487 else if (ret < 0)
488 BIO_printf(bio_err, "%s:error in %s\n",
489 str, SSL_state_string_long(s));
490 }
491 }
492
493 static STRINT_PAIR ssl_versions[] = {
494 {"SSL 3.0", SSL3_VERSION},
495 {"TLS 1.0", TLS1_VERSION},
496 {"TLS 1.1", TLS1_1_VERSION},
497 {"TLS 1.2", TLS1_2_VERSION},
498 {"TLS 1.3", TLS1_3_VERSION},
499 {"DTLS 1.0", DTLS1_VERSION},
500 {"DTLS 1.0 (bad)", DTLS1_BAD_VER},
501 {NULL}
502 };
503
504 static STRINT_PAIR alert_types[] = {
505 {" close_notify", 0},
506 {" end_of_early_data", 1},
507 {" unexpected_message", 10},
508 {" bad_record_mac", 20},
509 {" decryption_failed", 21},
510 {" record_overflow", 22},
511 {" decompression_failure", 30},
512 {" handshake_failure", 40},
513 {" bad_certificate", 42},
514 {" unsupported_certificate", 43},
515 {" certificate_revoked", 44},
516 {" certificate_expired", 45},
517 {" certificate_unknown", 46},
518 {" illegal_parameter", 47},
519 {" unknown_ca", 48},
520 {" access_denied", 49},
521 {" decode_error", 50},
522 {" decrypt_error", 51},
523 {" export_restriction", 60},
524 {" protocol_version", 70},
525 {" insufficient_security", 71},
526 {" internal_error", 80},
527 {" inappropriate_fallback", 86},
528 {" user_canceled", 90},
529 {" no_renegotiation", 100},
530 {" missing_extension", 109},
531 {" unsupported_extension", 110},
532 {" certificate_unobtainable", 111},
533 {" unrecognized_name", 112},
534 {" bad_certificate_status_response", 113},
535 {" bad_certificate_hash_value", 114},
536 {" unknown_psk_identity", 115},
537 {" certificate_required", 116},
538 {NULL}
539 };
540
541 static STRINT_PAIR handshakes[] = {
542 {", HelloRequest", SSL3_MT_HELLO_REQUEST},
543 {", ClientHello", SSL3_MT_CLIENT_HELLO},
544 {", ServerHello", SSL3_MT_SERVER_HELLO},
545 {", HelloVerifyRequest", DTLS1_MT_HELLO_VERIFY_REQUEST},
546 {", NewSessionTicket", SSL3_MT_NEWSESSION_TICKET},
547 {", EndOfEarlyData", SSL3_MT_END_OF_EARLY_DATA},
548 {", EncryptedExtensions", SSL3_MT_ENCRYPTED_EXTENSIONS},
549 {", Certificate", SSL3_MT_CERTIFICATE},
550 {", ServerKeyExchange", SSL3_MT_SERVER_KEY_EXCHANGE},
551 {", CertificateRequest", SSL3_MT_CERTIFICATE_REQUEST},
552 {", ServerHelloDone", SSL3_MT_SERVER_DONE},
553 {", CertificateVerify", SSL3_MT_CERTIFICATE_VERIFY},
554 {", ClientKeyExchange", SSL3_MT_CLIENT_KEY_EXCHANGE},
555 {", Finished", SSL3_MT_FINISHED},
556 {", CertificateUrl", SSL3_MT_CERTIFICATE_URL},
557 {", CertificateStatus", SSL3_MT_CERTIFICATE_STATUS},
558 {", SupplementalData", SSL3_MT_SUPPLEMENTAL_DATA},
559 {", KeyUpdate", SSL3_MT_KEY_UPDATE},
560 #ifndef OPENSSL_NO_NEXTPROTONEG
561 {", NextProto", SSL3_MT_NEXT_PROTO},
562 #endif
563 {", MessageHash", SSL3_MT_MESSAGE_HASH},
564 {NULL}
565 };
566
msg_cb(int write_p,int version,int content_type,const void * buf,size_t len,SSL * ssl,void * arg)567 void msg_cb(int write_p, int version, int content_type, const void *buf,
568 size_t len, SSL *ssl, void *arg)
569 {
570 BIO *bio = arg;
571 const char *str_write_p = write_p ? ">>>" : "<<<";
572 const char *str_version = lookup(version, ssl_versions, "???");
573 const char *str_content_type = "", *str_details1 = "", *str_details2 = "";
574 const unsigned char* bp = buf;
575
576 if (version == SSL3_VERSION ||
577 version == TLS1_VERSION ||
578 version == TLS1_1_VERSION ||
579 version == TLS1_2_VERSION ||
580 version == TLS1_3_VERSION ||
581 version == DTLS1_VERSION || version == DTLS1_BAD_VER) {
582 switch (content_type) {
583 case 20:
584 str_content_type = ", ChangeCipherSpec";
585 break;
586 case 21:
587 str_content_type = ", Alert";
588 str_details1 = ", ???";
589 if (len == 2) {
590 switch (bp[0]) {
591 case 1:
592 str_details1 = ", warning";
593 break;
594 case 2:
595 str_details1 = ", fatal";
596 break;
597 }
598 str_details2 = lookup((int)bp[1], alert_types, " ???");
599 }
600 break;
601 case 22:
602 str_content_type = ", Handshake";
603 str_details1 = "???";
604 if (len > 0)
605 str_details1 = lookup((int)bp[0], handshakes, "???");
606 break;
607 case 23:
608 str_content_type = ", ApplicationData";
609 break;
610 #ifndef OPENSSL_NO_HEARTBEATS
611 case 24:
612 str_details1 = ", Heartbeat";
613
614 if (len > 0) {
615 switch (bp[0]) {
616 case 1:
617 str_details1 = ", HeartbeatRequest";
618 break;
619 case 2:
620 str_details1 = ", HeartbeatResponse";
621 break;
622 }
623 }
624 break;
625 #endif
626 }
627 }
628
629 BIO_printf(bio, "%s %s%s [length %04lx]%s%s\n", str_write_p, str_version,
630 str_content_type, (unsigned long)len, str_details1,
631 str_details2);
632
633 if (len > 0) {
634 size_t num, i;
635
636 BIO_printf(bio, " ");
637 num = len;
638 for (i = 0; i < num; i++) {
639 if (i % 16 == 0 && i > 0)
640 BIO_printf(bio, "\n ");
641 BIO_printf(bio, " %02x", ((const unsigned char *)buf)[i]);
642 }
643 if (i < len)
644 BIO_printf(bio, " ...");
645 BIO_printf(bio, "\n");
646 }
647 (void)BIO_flush(bio);
648 }
649
650 static STRINT_PAIR tlsext_types[] = {
651 {"server name", TLSEXT_TYPE_server_name},
652 {"max fragment length", TLSEXT_TYPE_max_fragment_length},
653 {"client certificate URL", TLSEXT_TYPE_client_certificate_url},
654 {"trusted CA keys", TLSEXT_TYPE_trusted_ca_keys},
655 {"truncated HMAC", TLSEXT_TYPE_truncated_hmac},
656 {"status request", TLSEXT_TYPE_status_request},
657 {"user mapping", TLSEXT_TYPE_user_mapping},
658 {"client authz", TLSEXT_TYPE_client_authz},
659 {"server authz", TLSEXT_TYPE_server_authz},
660 {"cert type", TLSEXT_TYPE_cert_type},
661 {"supported_groups", TLSEXT_TYPE_supported_groups},
662 {"EC point formats", TLSEXT_TYPE_ec_point_formats},
663 {"SRP", TLSEXT_TYPE_srp},
664 {"signature algorithms", TLSEXT_TYPE_signature_algorithms},
665 {"use SRTP", TLSEXT_TYPE_use_srtp},
666 {"heartbeat", TLSEXT_TYPE_heartbeat},
667 {"session ticket", TLSEXT_TYPE_session_ticket},
668 {"renegotiation info", TLSEXT_TYPE_renegotiate},
669 {"signed certificate timestamps", TLSEXT_TYPE_signed_certificate_timestamp},
670 {"TLS padding", TLSEXT_TYPE_padding},
671 #ifdef TLSEXT_TYPE_next_proto_neg
672 {"next protocol", TLSEXT_TYPE_next_proto_neg},
673 #endif
674 #ifdef TLSEXT_TYPE_encrypt_then_mac
675 {"encrypt-then-mac", TLSEXT_TYPE_encrypt_then_mac},
676 #endif
677 #ifdef TLSEXT_TYPE_application_layer_protocol_negotiation
678 {"application layer protocol negotiation",
679 TLSEXT_TYPE_application_layer_protocol_negotiation},
680 #endif
681 #ifdef TLSEXT_TYPE_extended_master_secret
682 {"extended master secret", TLSEXT_TYPE_extended_master_secret},
683 #endif
684 {"key share", TLSEXT_TYPE_key_share},
685 {"supported versions", TLSEXT_TYPE_supported_versions},
686 {"psk", TLSEXT_TYPE_psk},
687 {"psk kex modes", TLSEXT_TYPE_psk_kex_modes},
688 {"certificate authorities", TLSEXT_TYPE_certificate_authorities},
689 {"post handshake auth", TLSEXT_TYPE_post_handshake_auth},
690 {NULL}
691 };
692
693 /* from rfc8446 4.2.3. + gost (https://tools.ietf.org/id/draft-smyshlyaev-tls12-gost-suites-04.html) */
694 static STRINT_PAIR signature_tls13_scheme_list[] = {
695 {"rsa_pkcs1_sha1", 0x0201 /* TLSEXT_SIGALG_rsa_pkcs1_sha1 */},
696 {"ecdsa_sha1", 0x0203 /* TLSEXT_SIGALG_ecdsa_sha1 */},
697 /* {"rsa_pkcs1_sha224", 0x0301 TLSEXT_SIGALG_rsa_pkcs1_sha224}, not in rfc8446 */
698 /* {"ecdsa_sha224", 0x0303 TLSEXT_SIGALG_ecdsa_sha224} not in rfc8446 */
699 {"rsa_pkcs1_sha256", 0x0401 /* TLSEXT_SIGALG_rsa_pkcs1_sha256 */},
700 {"ecdsa_secp256r1_sha256", 0x0403 /* TLSEXT_SIGALG_ecdsa_secp256r1_sha256 */},
701 {"rsa_pkcs1_sha384", 0x0501 /* TLSEXT_SIGALG_rsa_pkcs1_sha384 */},
702 {"ecdsa_secp384r1_sha384", 0x0503 /* TLSEXT_SIGALG_ecdsa_secp384r1_sha384 */},
703 {"rsa_pkcs1_sha512", 0x0601 /* TLSEXT_SIGALG_rsa_pkcs1_sha512 */},
704 {"ecdsa_secp521r1_sha512", 0x0603 /* TLSEXT_SIGALG_ecdsa_secp521r1_sha512 */},
705 {"rsa_pss_rsae_sha256", 0x0804 /* TLSEXT_SIGALG_rsa_pss_rsae_sha256 */},
706 {"rsa_pss_rsae_sha384", 0x0805 /* TLSEXT_SIGALG_rsa_pss_rsae_sha384 */},
707 {"rsa_pss_rsae_sha512", 0x0806 /* TLSEXT_SIGALG_rsa_pss_rsae_sha512 */},
708 {"ed25519", 0x0807 /* TLSEXT_SIGALG_ed25519 */},
709 {"ed448", 0x0808 /* TLSEXT_SIGALG_ed448 */},
710 {"rsa_pss_pss_sha256", 0x0809 /* TLSEXT_SIGALG_rsa_pss_pss_sha256 */},
711 {"rsa_pss_pss_sha384", 0x080a /* TLSEXT_SIGALG_rsa_pss_pss_sha384 */},
712 {"rsa_pss_pss_sha512", 0x080b /* TLSEXT_SIGALG_rsa_pss_pss_sha512 */},
713 {"gostr34102001", 0xeded /* TLSEXT_SIGALG_gostr34102001_gostr3411 */},
714 {"gostr34102012_256", 0xeeee /* TLSEXT_SIGALG_gostr34102012_256_gostr34112012_256 */},
715 {"gostr34102012_512", 0xefef /* TLSEXT_SIGALG_gostr34102012_512_gostr34112012_512 */},
716 {NULL}
717 };
718
719 /* from rfc5246 7.4.1.4.1. */
720 static STRINT_PAIR signature_tls12_alg_list[] = {
721 {"anonymous", TLSEXT_signature_anonymous /* 0 */},
722 {"RSA", TLSEXT_signature_rsa /* 1 */},
723 {"DSA", TLSEXT_signature_dsa /* 2 */},
724 {"ECDSA", TLSEXT_signature_ecdsa /* 3 */},
725 {NULL}
726 };
727
728 /* from rfc5246 7.4.1.4.1. */
729 static STRINT_PAIR signature_tls12_hash_list[] = {
730 {"none", TLSEXT_hash_none /* 0 */},
731 {"MD5", TLSEXT_hash_md5 /* 1 */},
732 {"SHA1", TLSEXT_hash_sha1 /* 2 */},
733 {"SHA224", TLSEXT_hash_sha224 /* 3 */},
734 {"SHA256", TLSEXT_hash_sha256 /* 4 */},
735 {"SHA384", TLSEXT_hash_sha384 /* 5 */},
736 {"SHA512", TLSEXT_hash_sha512 /* 6 */},
737 {NULL}
738 };
739
tlsext_cb(SSL * s,int client_server,int type,const unsigned char * data,int len,void * arg)740 void tlsext_cb(SSL *s, int client_server, int type,
741 const unsigned char *data, int len, void *arg)
742 {
743 BIO *bio = arg;
744 const char *extname = lookup(type, tlsext_types, "unknown");
745
746 BIO_printf(bio, "TLS %s extension \"%s\" (id=%d), len=%d\n",
747 client_server ? "server" : "client", extname, type, len);
748 BIO_dump(bio, (const char *)data, len);
749 (void)BIO_flush(bio);
750 }
751
752 #ifndef OPENSSL_NO_SOCK
generate_cookie_callback(SSL * ssl,unsigned char * cookie,unsigned int * cookie_len)753 int generate_cookie_callback(SSL *ssl, unsigned char *cookie,
754 unsigned int *cookie_len)
755 {
756 unsigned char *buffer;
757 size_t length = 0;
758 unsigned short port;
759 BIO_ADDR *lpeer = NULL, *peer = NULL;
760
761 /* Initialize a random secret */
762 if (!cookie_initialized) {
763 if (RAND_bytes(cookie_secret, COOKIE_SECRET_LENGTH) <= 0) {
764 BIO_printf(bio_err, "error setting random cookie secret\n");
765 return 0;
766 }
767 cookie_initialized = 1;
768 }
769
770 if (SSL_is_dtls(ssl)) {
771 lpeer = peer = BIO_ADDR_new();
772 if (peer == NULL) {
773 BIO_printf(bio_err, "memory full\n");
774 return 0;
775 }
776
777 /* Read peer information */
778 (void)BIO_dgram_get_peer(SSL_get_rbio(ssl), peer);
779 } else {
780 peer = ourpeer;
781 }
782
783 /* Create buffer with peer's address and port */
784 if (!BIO_ADDR_rawaddress(peer, NULL, &length)) {
785 BIO_printf(bio_err, "Failed getting peer address\n");
786 return 0;
787 }
788 OPENSSL_assert(length != 0);
789 port = BIO_ADDR_rawport(peer);
790 length += sizeof(port);
791 buffer = app_malloc(length, "cookie generate buffer");
792
793 memcpy(buffer, &port, sizeof(port));
794 BIO_ADDR_rawaddress(peer, buffer + sizeof(port), NULL);
795
796 /* Calculate HMAC of buffer using the secret */
797 HMAC(EVP_sha1(), cookie_secret, COOKIE_SECRET_LENGTH,
798 buffer, length, cookie, cookie_len);
799
800 OPENSSL_free(buffer);
801 BIO_ADDR_free(lpeer);
802
803 return 1;
804 }
805
verify_cookie_callback(SSL * ssl,const unsigned char * cookie,unsigned int cookie_len)806 int verify_cookie_callback(SSL *ssl, const unsigned char *cookie,
807 unsigned int cookie_len)
808 {
809 unsigned char result[EVP_MAX_MD_SIZE];
810 unsigned int resultlength;
811
812 /* Note: we check cookie_initialized because if it's not,
813 * it cannot be valid */
814 if (cookie_initialized
815 && generate_cookie_callback(ssl, result, &resultlength)
816 && cookie_len == resultlength
817 && memcmp(result, cookie, resultlength) == 0)
818 return 1;
819
820 return 0;
821 }
822
generate_stateless_cookie_callback(SSL * ssl,unsigned char * cookie,size_t * cookie_len)823 int generate_stateless_cookie_callback(SSL *ssl, unsigned char *cookie,
824 size_t *cookie_len)
825 {
826 unsigned int temp;
827 int res = generate_cookie_callback(ssl, cookie, &temp);
828
829 if (res != 0)
830 *cookie_len = temp;
831 return res;
832 }
833
verify_stateless_cookie_callback(SSL * ssl,const unsigned char * cookie,size_t cookie_len)834 int verify_stateless_cookie_callback(SSL *ssl, const unsigned char *cookie,
835 size_t cookie_len)
836 {
837 return verify_cookie_callback(ssl, cookie, cookie_len);
838 }
839
840 #endif
841
842 /*
843 * Example of extended certificate handling. Where the standard support of
844 * one certificate per algorithm is not sufficient an application can decide
845 * which certificate(s) to use at runtime based on whatever criteria it deems
846 * appropriate.
847 */
848
849 /* Linked list of certificates, keys and chains */
850 struct ssl_excert_st {
851 int certform;
852 const char *certfile;
853 int keyform;
854 const char *keyfile;
855 const char *chainfile;
856 X509 *cert;
857 EVP_PKEY *key;
858 STACK_OF(X509) *chain;
859 int build_chain;
860 struct ssl_excert_st *next, *prev;
861 };
862
863 static STRINT_PAIR chain_flags[] = {
864 {"Overall Validity", CERT_PKEY_VALID},
865 {"Sign with EE key", CERT_PKEY_SIGN},
866 {"EE signature", CERT_PKEY_EE_SIGNATURE},
867 {"CA signature", CERT_PKEY_CA_SIGNATURE},
868 {"EE key parameters", CERT_PKEY_EE_PARAM},
869 {"CA key parameters", CERT_PKEY_CA_PARAM},
870 {"Explicitly sign with EE key", CERT_PKEY_EXPLICIT_SIGN},
871 {"Issuer Name", CERT_PKEY_ISSUER_NAME},
872 {"Certificate Type", CERT_PKEY_CERT_TYPE},
873 {NULL}
874 };
875
print_chain_flags(SSL * s,int flags)876 static void print_chain_flags(SSL *s, int flags)
877 {
878 STRINT_PAIR *pp;
879
880 for (pp = chain_flags; pp->name; ++pp)
881 BIO_printf(bio_err, "\t%s: %s\n",
882 pp->name,
883 (flags & pp->retval) ? "OK" : "NOT OK");
884 BIO_printf(bio_err, "\tSuite B: ");
885 if (SSL_set_cert_flags(s, 0) & SSL_CERT_FLAG_SUITEB_128_LOS)
886 BIO_puts(bio_err, flags & CERT_PKEY_SUITEB ? "OK\n" : "NOT OK\n");
887 else
888 BIO_printf(bio_err, "not tested\n");
889 }
890
891 /*
892 * Very basic selection callback: just use any certificate chain reported as
893 * valid. More sophisticated could prioritise according to local policy.
894 */
set_cert_cb(SSL * ssl,void * arg)895 static int set_cert_cb(SSL *ssl, void *arg)
896 {
897 int i, rv;
898 SSL_EXCERT *exc = arg;
899 #ifdef CERT_CB_TEST_RETRY
900 static int retry_cnt;
901 if (retry_cnt < 5) {
902 retry_cnt++;
903 BIO_printf(bio_err,
904 "Certificate callback retry test: count %d\n",
905 retry_cnt);
906 return -1;
907 }
908 #endif
909 SSL_certs_clear(ssl);
910
911 if (exc == NULL)
912 return 1;
913
914 /*
915 * Go to end of list and traverse backwards since we prepend newer
916 * entries this retains the original order.
917 */
918 while (exc->next != NULL)
919 exc = exc->next;
920
921 i = 0;
922
923 while (exc != NULL) {
924 i++;
925 rv = SSL_check_chain(ssl, exc->cert, exc->key, exc->chain);
926 BIO_printf(bio_err, "Checking cert chain %d:\nSubject: ", i);
927 X509_NAME_print_ex(bio_err, X509_get_subject_name(exc->cert), 0,
928 get_nameopt());
929 BIO_puts(bio_err, "\n");
930 print_chain_flags(ssl, rv);
931 if (rv & CERT_PKEY_VALID) {
932 if (!SSL_use_certificate(ssl, exc->cert)
933 || !SSL_use_PrivateKey(ssl, exc->key)) {
934 return 0;
935 }
936 /*
937 * NB: we wouldn't normally do this as it is not efficient
938 * building chains on each connection better to cache the chain
939 * in advance.
940 */
941 if (exc->build_chain) {
942 if (!SSL_build_cert_chain(ssl, 0))
943 return 0;
944 } else if (exc->chain != NULL) {
945 if (!SSL_set1_chain(ssl, exc->chain))
946 return 0;
947 }
948 }
949 exc = exc->prev;
950 }
951 return 1;
952 }
953
ssl_ctx_set_excert(SSL_CTX * ctx,SSL_EXCERT * exc)954 void ssl_ctx_set_excert(SSL_CTX *ctx, SSL_EXCERT *exc)
955 {
956 SSL_CTX_set_cert_cb(ctx, set_cert_cb, exc);
957 }
958
ssl_excert_prepend(SSL_EXCERT ** pexc)959 static int ssl_excert_prepend(SSL_EXCERT **pexc)
960 {
961 SSL_EXCERT *exc = app_malloc(sizeof(*exc), "prepend cert");
962
963 memset(exc, 0, sizeof(*exc));
964
965 exc->next = *pexc;
966 *pexc = exc;
967
968 if (exc->next) {
969 exc->certform = exc->next->certform;
970 exc->keyform = exc->next->keyform;
971 exc->next->prev = exc;
972 } else {
973 exc->certform = FORMAT_PEM;
974 exc->keyform = FORMAT_PEM;
975 }
976 return 1;
977
978 }
979
ssl_excert_free(SSL_EXCERT * exc)980 void ssl_excert_free(SSL_EXCERT *exc)
981 {
982 SSL_EXCERT *curr;
983
984 if (exc == NULL)
985 return;
986 while (exc) {
987 X509_free(exc->cert);
988 EVP_PKEY_free(exc->key);
989 sk_X509_pop_free(exc->chain, X509_free);
990 curr = exc;
991 exc = exc->next;
992 OPENSSL_free(curr);
993 }
994 }
995
load_excert(SSL_EXCERT ** pexc)996 int load_excert(SSL_EXCERT **pexc)
997 {
998 SSL_EXCERT *exc = *pexc;
999 if (exc == NULL)
1000 return 1;
1001 /* If nothing in list, free and set to NULL */
1002 if (exc->certfile == NULL && exc->next == NULL) {
1003 ssl_excert_free(exc);
1004 *pexc = NULL;
1005 return 1;
1006 }
1007 for (; exc; exc = exc->next) {
1008 if (exc->certfile == NULL) {
1009 BIO_printf(bio_err, "Missing filename\n");
1010 return 0;
1011 }
1012 exc->cert = load_cert(exc->certfile, exc->certform,
1013 "Server Certificate");
1014 if (exc->cert == NULL)
1015 return 0;
1016 if (exc->keyfile != NULL) {
1017 exc->key = load_key(exc->keyfile, exc->keyform,
1018 0, NULL, NULL, "Server Key");
1019 } else {
1020 exc->key = load_key(exc->certfile, exc->certform,
1021 0, NULL, NULL, "Server Key");
1022 }
1023 if (exc->key == NULL)
1024 return 0;
1025 if (exc->chainfile != NULL) {
1026 if (!load_certs(exc->chainfile, &exc->chain, FORMAT_PEM, NULL,
1027 "Server Chain"))
1028 return 0;
1029 }
1030 }
1031 return 1;
1032 }
1033
1034 enum range { OPT_X_ENUM };
1035
args_excert(int opt,SSL_EXCERT ** pexc)1036 int args_excert(int opt, SSL_EXCERT **pexc)
1037 {
1038 SSL_EXCERT *exc = *pexc;
1039
1040 assert(opt > OPT_X__FIRST);
1041 assert(opt < OPT_X__LAST);
1042
1043 if (exc == NULL) {
1044 if (!ssl_excert_prepend(&exc)) {
1045 BIO_printf(bio_err, " %s: Error initialising xcert\n",
1046 opt_getprog());
1047 goto err;
1048 }
1049 *pexc = exc;
1050 }
1051
1052 switch ((enum range)opt) {
1053 case OPT_X__FIRST:
1054 case OPT_X__LAST:
1055 return 0;
1056 case OPT_X_CERT:
1057 if (exc->certfile != NULL && !ssl_excert_prepend(&exc)) {
1058 BIO_printf(bio_err, "%s: Error adding xcert\n", opt_getprog());
1059 goto err;
1060 }
1061 *pexc = exc;
1062 exc->certfile = opt_arg();
1063 break;
1064 case OPT_X_KEY:
1065 if (exc->keyfile != NULL) {
1066 BIO_printf(bio_err, "%s: Key already specified\n", opt_getprog());
1067 goto err;
1068 }
1069 exc->keyfile = opt_arg();
1070 break;
1071 case OPT_X_CHAIN:
1072 if (exc->chainfile != NULL) {
1073 BIO_printf(bio_err, "%s: Chain already specified\n",
1074 opt_getprog());
1075 goto err;
1076 }
1077 exc->chainfile = opt_arg();
1078 break;
1079 case OPT_X_CHAIN_BUILD:
1080 exc->build_chain = 1;
1081 break;
1082 case OPT_X_CERTFORM:
1083 if (!opt_format(opt_arg(), OPT_FMT_PEMDER, &exc->certform))
1084 return 0;
1085 break;
1086 case OPT_X_KEYFORM:
1087 if (!opt_format(opt_arg(), OPT_FMT_PEMDER, &exc->keyform))
1088 return 0;
1089 break;
1090 }
1091 return 1;
1092
1093 err:
1094 ERR_print_errors(bio_err);
1095 ssl_excert_free(exc);
1096 *pexc = NULL;
1097 return 0;
1098 }
1099
print_raw_cipherlist(SSL * s)1100 static void print_raw_cipherlist(SSL *s)
1101 {
1102 const unsigned char *rlist;
1103 static const unsigned char scsv_id[] = { 0, 0xFF };
1104 size_t i, rlistlen, num;
1105 if (!SSL_is_server(s))
1106 return;
1107 num = SSL_get0_raw_cipherlist(s, NULL);
1108 OPENSSL_assert(num == 2);
1109 rlistlen = SSL_get0_raw_cipherlist(s, &rlist);
1110 BIO_puts(bio_err, "Client cipher list: ");
1111 for (i = 0; i < rlistlen; i += num, rlist += num) {
1112 const SSL_CIPHER *c = SSL_CIPHER_find(s, rlist);
1113 if (i)
1114 BIO_puts(bio_err, ":");
1115 if (c != NULL) {
1116 BIO_puts(bio_err, SSL_CIPHER_get_name(c));
1117 } else if (memcmp(rlist, scsv_id, num) == 0) {
1118 BIO_puts(bio_err, "SCSV");
1119 } else {
1120 size_t j;
1121 BIO_puts(bio_err, "0x");
1122 for (j = 0; j < num; j++)
1123 BIO_printf(bio_err, "%02X", rlist[j]);
1124 }
1125 }
1126 BIO_puts(bio_err, "\n");
1127 }
1128
1129 /*
1130 * Hex encoder for TLSA RRdata, not ':' delimited.
1131 */
hexencode(const unsigned char * data,size_t len)1132 static char *hexencode(const unsigned char *data, size_t len)
1133 {
1134 static const char *hex = "0123456789abcdef";
1135 char *out;
1136 char *cp;
1137 size_t outlen = 2 * len + 1;
1138 int ilen = (int) outlen;
1139
1140 if (outlen < len || ilen < 0 || outlen != (size_t)ilen) {
1141 BIO_printf(bio_err, "%s: %zu-byte buffer too large to hexencode\n",
1142 opt_getprog(), len);
1143 exit(1);
1144 }
1145 cp = out = app_malloc(ilen, "TLSA hex data buffer");
1146
1147 while (len-- > 0) {
1148 *cp++ = hex[(*data >> 4) & 0x0f];
1149 *cp++ = hex[*data++ & 0x0f];
1150 }
1151 *cp = '\0';
1152 return out;
1153 }
1154
print_verify_detail(SSL * s,BIO * bio)1155 void print_verify_detail(SSL *s, BIO *bio)
1156 {
1157 int mdpth;
1158 EVP_PKEY *mspki;
1159 long verify_err = SSL_get_verify_result(s);
1160
1161 if (verify_err == X509_V_OK) {
1162 const char *peername = SSL_get0_peername(s);
1163
1164 BIO_printf(bio, "Verification: OK\n");
1165 if (peername != NULL)
1166 BIO_printf(bio, "Verified peername: %s\n", peername);
1167 } else {
1168 const char *reason = X509_verify_cert_error_string(verify_err);
1169
1170 BIO_printf(bio, "Verification error: %s\n", reason);
1171 }
1172
1173 if ((mdpth = SSL_get0_dane_authority(s, NULL, &mspki)) >= 0) {
1174 uint8_t usage, selector, mtype;
1175 const unsigned char *data = NULL;
1176 size_t dlen = 0;
1177 char *hexdata;
1178
1179 mdpth = SSL_get0_dane_tlsa(s, &usage, &selector, &mtype, &data, &dlen);
1180
1181 /*
1182 * The TLSA data field can be quite long when it is a certificate,
1183 * public key or even a SHA2-512 digest. Because the initial octets of
1184 * ASN.1 certificates and public keys contain mostly boilerplate OIDs
1185 * and lengths, we show the last 12 bytes of the data instead, as these
1186 * are more likely to distinguish distinct TLSA records.
1187 */
1188 #define TLSA_TAIL_SIZE 12
1189 if (dlen > TLSA_TAIL_SIZE)
1190 hexdata = hexencode(data + dlen - TLSA_TAIL_SIZE, TLSA_TAIL_SIZE);
1191 else
1192 hexdata = hexencode(data, dlen);
1193 BIO_printf(bio, "DANE TLSA %d %d %d %s%s %s at depth %d\n",
1194 usage, selector, mtype,
1195 (dlen > TLSA_TAIL_SIZE) ? "..." : "", hexdata,
1196 (mspki != NULL) ? "signed the certificate" :
1197 mdpth ? "matched TA certificate" : "matched EE certificate",
1198 mdpth);
1199 OPENSSL_free(hexdata);
1200 }
1201 }
1202
print_ssl_summary(SSL * s)1203 void print_ssl_summary(SSL *s)
1204 {
1205 const SSL_CIPHER *c;
1206 X509 *peer;
1207
1208 BIO_printf(bio_err, "Protocol version: %s\n", SSL_get_version(s));
1209 print_raw_cipherlist(s);
1210 c = SSL_get_current_cipher(s);
1211 BIO_printf(bio_err, "Ciphersuite: %s\n", SSL_CIPHER_get_name(c));
1212 do_print_sigalgs(bio_err, s, 0);
1213 peer = SSL_get_peer_certificate(s);
1214 if (peer != NULL) {
1215 int nid;
1216
1217 BIO_puts(bio_err, "Peer certificate: ");
1218 X509_NAME_print_ex(bio_err, X509_get_subject_name(peer),
1219 0, get_nameopt());
1220 BIO_puts(bio_err, "\n");
1221 if (SSL_get_peer_signature_nid(s, &nid))
1222 BIO_printf(bio_err, "Hash used: %s\n", OBJ_nid2sn(nid));
1223 if (SSL_get_peer_signature_type_nid(s, &nid))
1224 BIO_printf(bio_err, "Signature type: %s\n", get_sigtype(nid));
1225 print_verify_detail(s, bio_err);
1226 } else {
1227 BIO_puts(bio_err, "No peer certificate\n");
1228 }
1229 X509_free(peer);
1230 #ifndef OPENSSL_NO_EC
1231 ssl_print_point_formats(bio_err, s);
1232 if (SSL_is_server(s))
1233 ssl_print_groups(bio_err, s, 1);
1234 else
1235 ssl_print_tmp_key(bio_err, s);
1236 #else
1237 if (!SSL_is_server(s))
1238 ssl_print_tmp_key(bio_err, s);
1239 #endif
1240 }
1241
config_ctx(SSL_CONF_CTX * cctx,STACK_OF (OPENSSL_STRING)* str,SSL_CTX * ctx)1242 int config_ctx(SSL_CONF_CTX *cctx, STACK_OF(OPENSSL_STRING) *str,
1243 SSL_CTX *ctx)
1244 {
1245 int i;
1246
1247 SSL_CONF_CTX_set_ssl_ctx(cctx, ctx);
1248 for (i = 0; i < sk_OPENSSL_STRING_num(str); i += 2) {
1249 const char *flag = sk_OPENSSL_STRING_value(str, i);
1250 const char *arg = sk_OPENSSL_STRING_value(str, i + 1);
1251 if (SSL_CONF_cmd(cctx, flag, arg) <= 0) {
1252 if (arg != NULL)
1253 BIO_printf(bio_err, "Error with command: \"%s %s\"\n",
1254 flag, arg);
1255 else
1256 BIO_printf(bio_err, "Error with command: \"%s\"\n", flag);
1257 ERR_print_errors(bio_err);
1258 return 0;
1259 }
1260 }
1261 if (!SSL_CONF_CTX_finish(cctx)) {
1262 BIO_puts(bio_err, "Error finishing context\n");
1263 ERR_print_errors(bio_err);
1264 return 0;
1265 }
1266 return 1;
1267 }
1268
add_crls_store(X509_STORE * st,STACK_OF (X509_CRL)* crls)1269 static int add_crls_store(X509_STORE *st, STACK_OF(X509_CRL) *crls)
1270 {
1271 X509_CRL *crl;
1272 int i;
1273 for (i = 0; i < sk_X509_CRL_num(crls); i++) {
1274 crl = sk_X509_CRL_value(crls, i);
1275 X509_STORE_add_crl(st, crl);
1276 }
1277 return 1;
1278 }
1279
ssl_ctx_add_crls(SSL_CTX * ctx,STACK_OF (X509_CRL)* crls,int crl_download)1280 int ssl_ctx_add_crls(SSL_CTX *ctx, STACK_OF(X509_CRL) *crls, int crl_download)
1281 {
1282 X509_STORE *st;
1283 st = SSL_CTX_get_cert_store(ctx);
1284 add_crls_store(st, crls);
1285 if (crl_download)
1286 store_setup_crl_download(st);
1287 return 1;
1288 }
1289
ssl_load_stores(SSL_CTX * ctx,const char * vfyCApath,const char * vfyCAfile,const char * chCApath,const char * chCAfile,STACK_OF (X509_CRL)* crls,int crl_download)1290 int ssl_load_stores(SSL_CTX *ctx,
1291 const char *vfyCApath, const char *vfyCAfile,
1292 const char *chCApath, const char *chCAfile,
1293 STACK_OF(X509_CRL) *crls, int crl_download)
1294 {
1295 X509_STORE *vfy = NULL, *ch = NULL;
1296 int rv = 0;
1297 if (vfyCApath != NULL || vfyCAfile != NULL) {
1298 vfy = X509_STORE_new();
1299 if (vfy == NULL)
1300 goto err;
1301 if (!X509_STORE_load_locations(vfy, vfyCAfile, vfyCApath))
1302 goto err;
1303 add_crls_store(vfy, crls);
1304 SSL_CTX_set1_verify_cert_store(ctx, vfy);
1305 if (crl_download)
1306 store_setup_crl_download(vfy);
1307 }
1308 if (chCApath != NULL || chCAfile != NULL) {
1309 ch = X509_STORE_new();
1310 if (ch == NULL)
1311 goto err;
1312 if (!X509_STORE_load_locations(ch, chCAfile, chCApath))
1313 goto err;
1314 SSL_CTX_set1_chain_cert_store(ctx, ch);
1315 }
1316 rv = 1;
1317 err:
1318 X509_STORE_free(vfy);
1319 X509_STORE_free(ch);
1320 return rv;
1321 }
1322
1323 /* Verbose print out of security callback */
1324
1325 typedef struct {
1326 BIO *out;
1327 int verbose;
1328 int (*old_cb) (const SSL *s, const SSL_CTX *ctx, int op, int bits, int nid,
1329 void *other, void *ex);
1330 } security_debug_ex;
1331
1332 static STRINT_PAIR callback_types[] = {
1333 {"Supported Ciphersuite", SSL_SECOP_CIPHER_SUPPORTED},
1334 {"Shared Ciphersuite", SSL_SECOP_CIPHER_SHARED},
1335 {"Check Ciphersuite", SSL_SECOP_CIPHER_CHECK},
1336 #ifndef OPENSSL_NO_DH
1337 {"Temp DH key bits", SSL_SECOP_TMP_DH},
1338 #endif
1339 {"Supported Curve", SSL_SECOP_CURVE_SUPPORTED},
1340 {"Shared Curve", SSL_SECOP_CURVE_SHARED},
1341 {"Check Curve", SSL_SECOP_CURVE_CHECK},
1342 {"Supported Signature Algorithm", SSL_SECOP_SIGALG_SUPPORTED},
1343 {"Shared Signature Algorithm", SSL_SECOP_SIGALG_SHARED},
1344 {"Check Signature Algorithm", SSL_SECOP_SIGALG_CHECK},
1345 {"Signature Algorithm mask", SSL_SECOP_SIGALG_MASK},
1346 {"Certificate chain EE key", SSL_SECOP_EE_KEY},
1347 {"Certificate chain CA key", SSL_SECOP_CA_KEY},
1348 {"Peer Chain EE key", SSL_SECOP_PEER_EE_KEY},
1349 {"Peer Chain CA key", SSL_SECOP_PEER_CA_KEY},
1350 {"Certificate chain CA digest", SSL_SECOP_CA_MD},
1351 {"Peer chain CA digest", SSL_SECOP_PEER_CA_MD},
1352 {"SSL compression", SSL_SECOP_COMPRESSION},
1353 {"Session ticket", SSL_SECOP_TICKET},
1354 {NULL}
1355 };
1356
security_callback_debug(const SSL * s,const SSL_CTX * ctx,int op,int bits,int nid,void * other,void * ex)1357 static int security_callback_debug(const SSL *s, const SSL_CTX *ctx,
1358 int op, int bits, int nid,
1359 void *other, void *ex)
1360 {
1361 security_debug_ex *sdb = ex;
1362 int rv, show_bits = 1, cert_md = 0;
1363 const char *nm;
1364 int show_nm;
1365 rv = sdb->old_cb(s, ctx, op, bits, nid, other, ex);
1366 if (rv == 1 && sdb->verbose < 2)
1367 return 1;
1368 BIO_puts(sdb->out, "Security callback: ");
1369
1370 nm = lookup(op, callback_types, NULL);
1371 show_nm = nm != NULL;
1372 switch (op) {
1373 case SSL_SECOP_TICKET:
1374 case SSL_SECOP_COMPRESSION:
1375 show_bits = 0;
1376 show_nm = 0;
1377 break;
1378 case SSL_SECOP_VERSION:
1379 BIO_printf(sdb->out, "Version=%s", lookup(nid, ssl_versions, "???"));
1380 show_bits = 0;
1381 show_nm = 0;
1382 break;
1383 case SSL_SECOP_CA_MD:
1384 case SSL_SECOP_PEER_CA_MD:
1385 cert_md = 1;
1386 break;
1387 case SSL_SECOP_SIGALG_SUPPORTED:
1388 case SSL_SECOP_SIGALG_SHARED:
1389 case SSL_SECOP_SIGALG_CHECK:
1390 case SSL_SECOP_SIGALG_MASK:
1391 show_nm = 0;
1392 break;
1393 }
1394 if (show_nm)
1395 BIO_printf(sdb->out, "%s=", nm);
1396
1397 switch (op & SSL_SECOP_OTHER_TYPE) {
1398
1399 case SSL_SECOP_OTHER_CIPHER:
1400 BIO_puts(sdb->out, SSL_CIPHER_get_name(other));
1401 break;
1402
1403 #ifndef OPENSSL_NO_EC
1404 case SSL_SECOP_OTHER_CURVE:
1405 {
1406 const char *cname;
1407 cname = EC_curve_nid2nist(nid);
1408 if (cname == NULL)
1409 cname = OBJ_nid2sn(nid);
1410 BIO_puts(sdb->out, cname);
1411 }
1412 break;
1413 #endif
1414 #ifndef OPENSSL_NO_DH
1415 case SSL_SECOP_OTHER_DH:
1416 {
1417 DH *dh = other;
1418 BIO_printf(sdb->out, "%d", DH_bits(dh));
1419 break;
1420 }
1421 #endif
1422 case SSL_SECOP_OTHER_CERT:
1423 {
1424 if (cert_md) {
1425 int sig_nid = X509_get_signature_nid(other);
1426 BIO_puts(sdb->out, OBJ_nid2sn(sig_nid));
1427 } else {
1428 EVP_PKEY *pkey = X509_get0_pubkey(other);
1429 const char *algname = "";
1430 EVP_PKEY_asn1_get0_info(NULL, NULL, NULL, NULL,
1431 &algname, EVP_PKEY_get0_asn1(pkey));
1432 BIO_printf(sdb->out, "%s, bits=%d",
1433 algname, EVP_PKEY_bits(pkey));
1434 }
1435 break;
1436 }
1437 case SSL_SECOP_OTHER_SIGALG:
1438 {
1439 const unsigned char *salg = other;
1440 const char *sname = NULL;
1441 int raw_sig_code = (salg[0] << 8) + salg[1]; /* always big endian (msb, lsb) */
1442 /* raw_sig_code: signature_scheme from tls1.3, or signature_and_hash from tls1.2 */
1443
1444 if (nm != NULL)
1445 BIO_printf(sdb->out, "%s", nm);
1446 else
1447 BIO_printf(sdb->out, "s_cb.c:security_callback_debug op=0x%x", op);
1448
1449 sname = lookup(raw_sig_code, signature_tls13_scheme_list, NULL);
1450 if (sname != NULL) {
1451 BIO_printf(sdb->out, " scheme=%s", sname);
1452 } else {
1453 int alg_code = salg[1];
1454 int hash_code = salg[0];
1455 const char *alg_str = lookup(alg_code, signature_tls12_alg_list, NULL);
1456 const char *hash_str = lookup(hash_code, signature_tls12_hash_list, NULL);
1457
1458 if (alg_str != NULL && hash_str != NULL)
1459 BIO_printf(sdb->out, " digest=%s, algorithm=%s", hash_str, alg_str);
1460 else
1461 BIO_printf(sdb->out, " scheme=unknown(0x%04x)", raw_sig_code);
1462 }
1463 }
1464
1465 }
1466
1467 if (show_bits)
1468 BIO_printf(sdb->out, ", security bits=%d", bits);
1469 BIO_printf(sdb->out, ": %s\n", rv ? "yes" : "no");
1470 return rv;
1471 }
1472
ssl_ctx_security_debug(SSL_CTX * ctx,int verbose)1473 void ssl_ctx_security_debug(SSL_CTX *ctx, int verbose)
1474 {
1475 static security_debug_ex sdb;
1476
1477 sdb.out = bio_err;
1478 sdb.verbose = verbose;
1479 sdb.old_cb = SSL_CTX_get_security_callback(ctx);
1480 SSL_CTX_set_security_callback(ctx, security_callback_debug);
1481 SSL_CTX_set0_security_ex_data(ctx, &sdb);
1482 }
1483
keylog_callback(const SSL * ssl,const char * line)1484 static void keylog_callback(const SSL *ssl, const char *line)
1485 {
1486 if (bio_keylog == NULL) {
1487 BIO_printf(bio_err, "Keylog callback is invoked without valid file!\n");
1488 return;
1489 }
1490
1491 /*
1492 * There might be concurrent writers to the keylog file, so we must ensure
1493 * that the given line is written at once.
1494 */
1495 BIO_printf(bio_keylog, "%s\n", line);
1496 (void)BIO_flush(bio_keylog);
1497 }
1498
set_keylog_file(SSL_CTX * ctx,const char * keylog_file)1499 int set_keylog_file(SSL_CTX *ctx, const char *keylog_file)
1500 {
1501 /* Close any open files */
1502 BIO_free_all(bio_keylog);
1503 bio_keylog = NULL;
1504
1505 if (ctx == NULL || keylog_file == NULL) {
1506 /* Keylogging is disabled, OK. */
1507 return 0;
1508 }
1509
1510 /*
1511 * Append rather than write in order to allow concurrent modification.
1512 * Furthermore, this preserves existing keylog files which is useful when
1513 * the tool is run multiple times.
1514 */
1515 bio_keylog = BIO_new_file(keylog_file, "a");
1516 if (bio_keylog == NULL) {
1517 BIO_printf(bio_err, "Error writing keylog file %s\n", keylog_file);
1518 return 1;
1519 }
1520
1521 /* Write a header for seekable, empty files (this excludes pipes). */
1522 if (BIO_tell(bio_keylog) == 0) {
1523 BIO_puts(bio_keylog,
1524 "# SSL/TLS secrets log file, generated by OpenSSL\n");
1525 (void)BIO_flush(bio_keylog);
1526 }
1527 SSL_CTX_set_keylog_callback(ctx, keylog_callback);
1528 return 0;
1529 }
1530
print_ca_names(BIO * bio,SSL * s)1531 void print_ca_names(BIO *bio, SSL *s)
1532 {
1533 const char *cs = SSL_is_server(s) ? "server" : "client";
1534 const STACK_OF(X509_NAME) *sk = SSL_get0_peer_CA_list(s);
1535 int i;
1536
1537 if (sk == NULL || sk_X509_NAME_num(sk) == 0) {
1538 if (!SSL_is_server(s))
1539 BIO_printf(bio, "---\nNo %s certificate CA names sent\n", cs);
1540 return;
1541 }
1542
1543 BIO_printf(bio, "---\nAcceptable %s certificate CA names\n",cs);
1544 for (i = 0; i < sk_X509_NAME_num(sk); i++) {
1545 X509_NAME_print_ex(bio, sk_X509_NAME_value(sk, i), 0, get_nameopt());
1546 BIO_write(bio, "\n", 1);
1547 }
1548 }
1549