1 /*
2 * Copyright 1995-2021 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 BIO_puts(bio_err, "issuer= ");
78 X509_NAME_print_ex(bio_err, X509_get_issuer_name(err_cert),
79 0, get_nameopt());
80 BIO_puts(bio_err, "\n");
81 break;
82 case X509_V_ERR_CERT_NOT_YET_VALID:
83 case X509_V_ERR_ERROR_IN_CERT_NOT_BEFORE_FIELD:
84 BIO_printf(bio_err, "notBefore=");
85 ASN1_TIME_print(bio_err, X509_get0_notBefore(err_cert));
86 BIO_printf(bio_err, "\n");
87 break;
88 case X509_V_ERR_CERT_HAS_EXPIRED:
89 case X509_V_ERR_ERROR_IN_CERT_NOT_AFTER_FIELD:
90 BIO_printf(bio_err, "notAfter=");
91 ASN1_TIME_print(bio_err, X509_get0_notAfter(err_cert));
92 BIO_printf(bio_err, "\n");
93 break;
94 case X509_V_ERR_NO_EXPLICIT_POLICY:
95 if (!verify_args.quiet)
96 policies_print(ctx);
97 break;
98 }
99 if (err == X509_V_OK && ok == 2 && !verify_args.quiet)
100 policies_print(ctx);
101 if (ok && !verify_args.quiet)
102 BIO_printf(bio_err, "verify return:%d\n", ok);
103 return ok;
104 }
105
set_cert_stuff(SSL_CTX * ctx,char * cert_file,char * key_file)106 int set_cert_stuff(SSL_CTX *ctx, char *cert_file, char *key_file)
107 {
108 if (cert_file != NULL) {
109 if (SSL_CTX_use_certificate_file(ctx, cert_file,
110 SSL_FILETYPE_PEM) <= 0) {
111 BIO_printf(bio_err, "unable to get certificate from '%s'\n",
112 cert_file);
113 ERR_print_errors(bio_err);
114 return 0;
115 }
116 if (key_file == NULL)
117 key_file = cert_file;
118 if (SSL_CTX_use_PrivateKey_file(ctx, key_file, SSL_FILETYPE_PEM) <= 0) {
119 BIO_printf(bio_err, "unable to get private key from '%s'\n",
120 key_file);
121 ERR_print_errors(bio_err);
122 return 0;
123 }
124
125 /*
126 * If we are using DSA, we can copy the parameters from the private
127 * key
128 */
129
130 /*
131 * Now we know that a key and cert have been set against the SSL
132 * context
133 */
134 if (!SSL_CTX_check_private_key(ctx)) {
135 BIO_printf(bio_err,
136 "Private key does not match the certificate public key\n");
137 return 0;
138 }
139 }
140 return 1;
141 }
142
set_cert_key_stuff(SSL_CTX * ctx,X509 * cert,EVP_PKEY * key,STACK_OF (X509)* chain,int build_chain)143 int set_cert_key_stuff(SSL_CTX *ctx, X509 *cert, EVP_PKEY *key,
144 STACK_OF(X509) *chain, int build_chain)
145 {
146 int chflags = chain ? SSL_BUILD_CHAIN_FLAG_CHECK : 0;
147 if (cert == NULL)
148 return 1;
149 if (SSL_CTX_use_certificate(ctx, cert) <= 0) {
150 BIO_printf(bio_err, "error setting certificate\n");
151 ERR_print_errors(bio_err);
152 return 0;
153 }
154
155 if (SSL_CTX_use_PrivateKey(ctx, key) <= 0) {
156 BIO_printf(bio_err, "error setting private key\n");
157 ERR_print_errors(bio_err);
158 return 0;
159 }
160
161 /*
162 * Now we know that a key and cert have been set against the SSL context
163 */
164 if (!SSL_CTX_check_private_key(ctx)) {
165 BIO_printf(bio_err,
166 "Private key does not match the certificate public key\n");
167 return 0;
168 }
169 if (chain && !SSL_CTX_set1_chain(ctx, chain)) {
170 BIO_printf(bio_err, "error setting certificate chain\n");
171 ERR_print_errors(bio_err);
172 return 0;
173 }
174 if (build_chain && !SSL_CTX_build_cert_chain(ctx, chflags)) {
175 BIO_printf(bio_err, "error building certificate chain\n");
176 ERR_print_errors(bio_err);
177 return 0;
178 }
179 return 1;
180 }
181
182 static STRINT_PAIR cert_type_list[] = {
183 {"RSA sign", TLS_CT_RSA_SIGN},
184 {"DSA sign", TLS_CT_DSS_SIGN},
185 {"RSA fixed DH", TLS_CT_RSA_FIXED_DH},
186 {"DSS fixed DH", TLS_CT_DSS_FIXED_DH},
187 {"ECDSA sign", TLS_CT_ECDSA_SIGN},
188 {"RSA fixed ECDH", TLS_CT_RSA_FIXED_ECDH},
189 {"ECDSA fixed ECDH", TLS_CT_ECDSA_FIXED_ECDH},
190 {"GOST01 Sign", TLS_CT_GOST01_SIGN},
191 {"GOST12 Sign", TLS_CT_GOST12_SIGN},
192 {NULL}
193 };
194
ssl_print_client_cert_types(BIO * bio,SSL * s)195 static void ssl_print_client_cert_types(BIO *bio, SSL *s)
196 {
197 const unsigned char *p;
198 int i;
199 int cert_type_num = SSL_get0_certificate_types(s, &p);
200 if (!cert_type_num)
201 return;
202 BIO_puts(bio, "Client Certificate Types: ");
203 for (i = 0; i < cert_type_num; i++) {
204 unsigned char cert_type = p[i];
205 const char *cname = lookup((int)cert_type, cert_type_list, NULL);
206
207 if (i)
208 BIO_puts(bio, ", ");
209 if (cname != NULL)
210 BIO_puts(bio, cname);
211 else
212 BIO_printf(bio, "UNKNOWN (%d),", cert_type);
213 }
214 BIO_puts(bio, "\n");
215 }
216
get_sigtype(int nid)217 static const char *get_sigtype(int nid)
218 {
219 switch (nid) {
220 case EVP_PKEY_RSA:
221 return "RSA";
222
223 case EVP_PKEY_RSA_PSS:
224 return "RSA-PSS";
225
226 case EVP_PKEY_DSA:
227 return "DSA";
228
229 case EVP_PKEY_EC:
230 return "ECDSA";
231
232 case NID_ED25519:
233 return "Ed25519";
234
235 case NID_ED448:
236 return "Ed448";
237
238 case NID_id_GostR3410_2001:
239 return "gost2001";
240
241 case NID_id_GostR3410_2012_256:
242 return "gost2012_256";
243
244 case NID_id_GostR3410_2012_512:
245 return "gost2012_512";
246
247 default:
248 return NULL;
249 }
250 }
251
do_print_sigalgs(BIO * out,SSL * s,int shared)252 static int do_print_sigalgs(BIO *out, SSL *s, int shared)
253 {
254 int i, nsig, client;
255 client = SSL_is_server(s) ? 0 : 1;
256 if (shared)
257 nsig = SSL_get_shared_sigalgs(s, 0, NULL, NULL, NULL, NULL, NULL);
258 else
259 nsig = SSL_get_sigalgs(s, -1, NULL, NULL, NULL, NULL, NULL);
260 if (nsig == 0)
261 return 1;
262
263 if (shared)
264 BIO_puts(out, "Shared ");
265
266 if (client)
267 BIO_puts(out, "Requested ");
268 BIO_puts(out, "Signature Algorithms: ");
269 for (i = 0; i < nsig; i++) {
270 int hash_nid, sign_nid;
271 unsigned char rhash, rsign;
272 const char *sstr = NULL;
273 if (shared)
274 SSL_get_shared_sigalgs(s, i, &sign_nid, &hash_nid, NULL,
275 &rsign, &rhash);
276 else
277 SSL_get_sigalgs(s, i, &sign_nid, &hash_nid, NULL, &rsign, &rhash);
278 if (i)
279 BIO_puts(out, ":");
280 sstr = get_sigtype(sign_nid);
281 if (sstr)
282 BIO_printf(out, "%s", sstr);
283 else
284 BIO_printf(out, "0x%02X", (int)rsign);
285 if (hash_nid != NID_undef)
286 BIO_printf(out, "+%s", OBJ_nid2sn(hash_nid));
287 else if (sstr == NULL)
288 BIO_printf(out, "+0x%02X", (int)rhash);
289 }
290 BIO_puts(out, "\n");
291 return 1;
292 }
293
ssl_print_sigalgs(BIO * out,SSL * s)294 int ssl_print_sigalgs(BIO *out, SSL *s)
295 {
296 int nid;
297 if (!SSL_is_server(s))
298 ssl_print_client_cert_types(out, s);
299 do_print_sigalgs(out, s, 0);
300 do_print_sigalgs(out, s, 1);
301 if (SSL_get_peer_signature_nid(s, &nid) && nid != NID_undef)
302 BIO_printf(out, "Peer signing digest: %s\n", OBJ_nid2sn(nid));
303 if (SSL_get_peer_signature_type_nid(s, &nid))
304 BIO_printf(out, "Peer signature type: %s\n", get_sigtype(nid));
305 return 1;
306 }
307
308 #ifndef OPENSSL_NO_EC
ssl_print_point_formats(BIO * out,SSL * s)309 int ssl_print_point_formats(BIO *out, SSL *s)
310 {
311 int i, nformats;
312 const char *pformats;
313 nformats = SSL_get0_ec_point_formats(s, &pformats);
314 if (nformats <= 0)
315 return 1;
316 BIO_puts(out, "Supported Elliptic Curve Point Formats: ");
317 for (i = 0; i < nformats; i++, pformats++) {
318 if (i)
319 BIO_puts(out, ":");
320 switch (*pformats) {
321 case TLSEXT_ECPOINTFORMAT_uncompressed:
322 BIO_puts(out, "uncompressed");
323 break;
324
325 case TLSEXT_ECPOINTFORMAT_ansiX962_compressed_prime:
326 BIO_puts(out, "ansiX962_compressed_prime");
327 break;
328
329 case TLSEXT_ECPOINTFORMAT_ansiX962_compressed_char2:
330 BIO_puts(out, "ansiX962_compressed_char2");
331 break;
332
333 default:
334 BIO_printf(out, "unknown(%d)", (int)*pformats);
335 break;
336
337 }
338 }
339 BIO_puts(out, "\n");
340 return 1;
341 }
342
ssl_print_groups(BIO * out,SSL * s,int noshared)343 int ssl_print_groups(BIO *out, SSL *s, int noshared)
344 {
345 int i, ngroups, *groups, nid;
346 const char *gname;
347
348 ngroups = SSL_get1_groups(s, NULL);
349 if (ngroups <= 0)
350 return 1;
351 groups = app_malloc(ngroups * sizeof(int), "groups to print");
352 SSL_get1_groups(s, groups);
353
354 BIO_puts(out, "Supported Elliptic Groups: ");
355 for (i = 0; i < ngroups; i++) {
356 if (i)
357 BIO_puts(out, ":");
358 nid = groups[i];
359 /* If unrecognised print out hex version */
360 if (nid & TLSEXT_nid_unknown) {
361 BIO_printf(out, "0x%04X", nid & 0xFFFF);
362 } else {
363 /* TODO(TLS1.3): Get group name here */
364 /* Use NIST name for curve if it exists */
365 gname = EC_curve_nid2nist(nid);
366 if (gname == NULL)
367 gname = OBJ_nid2sn(nid);
368 BIO_printf(out, "%s", gname);
369 }
370 }
371 OPENSSL_free(groups);
372 if (noshared) {
373 BIO_puts(out, "\n");
374 return 1;
375 }
376 BIO_puts(out, "\nShared Elliptic groups: ");
377 ngroups = SSL_get_shared_group(s, -1);
378 for (i = 0; i < ngroups; i++) {
379 if (i)
380 BIO_puts(out, ":");
381 nid = SSL_get_shared_group(s, i);
382 /* TODO(TLS1.3): Convert for DH groups */
383 gname = EC_curve_nid2nist(nid);
384 if (gname == NULL)
385 gname = OBJ_nid2sn(nid);
386 BIO_printf(out, "%s", gname);
387 }
388 if (ngroups == 0)
389 BIO_puts(out, "NONE");
390 BIO_puts(out, "\n");
391 return 1;
392 }
393 #endif
394
ssl_print_tmp_key(BIO * out,SSL * s)395 int ssl_print_tmp_key(BIO *out, SSL *s)
396 {
397 EVP_PKEY *key;
398
399 if (!SSL_get_peer_tmp_key(s, &key))
400 return 1;
401 BIO_puts(out, "Server Temp Key: ");
402 switch (EVP_PKEY_id(key)) {
403 case EVP_PKEY_RSA:
404 BIO_printf(out, "RSA, %d bits\n", EVP_PKEY_bits(key));
405 break;
406
407 case EVP_PKEY_DH:
408 BIO_printf(out, "DH, %d bits\n", EVP_PKEY_bits(key));
409 break;
410 #ifndef OPENSSL_NO_EC
411 case EVP_PKEY_EC:
412 {
413 EC_KEY *ec = EVP_PKEY_get1_EC_KEY(key);
414 int nid;
415 const char *cname;
416 nid = EC_GROUP_get_curve_name(EC_KEY_get0_group(ec));
417 EC_KEY_free(ec);
418 cname = EC_curve_nid2nist(nid);
419 if (cname == NULL)
420 cname = OBJ_nid2sn(nid);
421 BIO_printf(out, "ECDH, %s, %d bits\n", cname, EVP_PKEY_bits(key));
422 }
423 break;
424 #endif
425 default:
426 BIO_printf(out, "%s, %d bits\n", OBJ_nid2sn(EVP_PKEY_id(key)),
427 EVP_PKEY_bits(key));
428 }
429 EVP_PKEY_free(key);
430 return 1;
431 }
432
bio_dump_callback(BIO * bio,int cmd,const char * argp,int argi,long argl,long ret)433 long bio_dump_callback(BIO *bio, int cmd, const char *argp,
434 int argi, long argl, long ret)
435 {
436 BIO *out;
437
438 out = (BIO *)BIO_get_callback_arg(bio);
439 if (out == NULL)
440 return ret;
441
442 if (cmd == (BIO_CB_READ | BIO_CB_RETURN)) {
443 BIO_printf(out, "read from %p [%p] (%lu bytes => %ld (0x%lX))\n",
444 (void *)bio, (void *)argp, (unsigned long)argi, ret, ret);
445 BIO_dump(out, argp, (int)ret);
446 return ret;
447 } else if (cmd == (BIO_CB_WRITE | BIO_CB_RETURN)) {
448 BIO_printf(out, "write to %p [%p] (%lu bytes => %ld (0x%lX))\n",
449 (void *)bio, (void *)argp, (unsigned long)argi, ret, ret);
450 BIO_dump(out, argp, (int)ret);
451 }
452 return ret;
453 }
454
apps_ssl_info_callback(const SSL * s,int where,int ret)455 void apps_ssl_info_callback(const SSL *s, int where, int ret)
456 {
457 const char *str;
458 int w;
459
460 w = where & ~SSL_ST_MASK;
461
462 if (w & SSL_ST_CONNECT)
463 str = "SSL_connect";
464 else if (w & SSL_ST_ACCEPT)
465 str = "SSL_accept";
466 else
467 str = "undefined";
468
469 if (where & SSL_CB_LOOP) {
470 BIO_printf(bio_err, "%s:%s\n", str, SSL_state_string_long(s));
471 } else if (where & SSL_CB_ALERT) {
472 str = (where & SSL_CB_READ) ? "read" : "write";
473 BIO_printf(bio_err, "SSL3 alert %s:%s:%s\n",
474 str,
475 SSL_alert_type_string_long(ret),
476 SSL_alert_desc_string_long(ret));
477 } else if (where & SSL_CB_EXIT) {
478 if (ret == 0)
479 BIO_printf(bio_err, "%s:failed in %s\n",
480 str, SSL_state_string_long(s));
481 else if (ret < 0)
482 BIO_printf(bio_err, "%s:error in %s\n",
483 str, SSL_state_string_long(s));
484 }
485 }
486
487 static STRINT_PAIR ssl_versions[] = {
488 {"SSL 3.0", SSL3_VERSION},
489 {"TLS 1.0", TLS1_VERSION},
490 {"TLS 1.1", TLS1_1_VERSION},
491 {"TLS 1.2", TLS1_2_VERSION},
492 {"TLS 1.3", TLS1_3_VERSION},
493 {"DTLS 1.0", DTLS1_VERSION},
494 {"DTLS 1.0 (bad)", DTLS1_BAD_VER},
495 {NULL}
496 };
497
498 static STRINT_PAIR alert_types[] = {
499 {" close_notify", 0},
500 {" end_of_early_data", 1},
501 {" unexpected_message", 10},
502 {" bad_record_mac", 20},
503 {" decryption_failed", 21},
504 {" record_overflow", 22},
505 {" decompression_failure", 30},
506 {" handshake_failure", 40},
507 {" bad_certificate", 42},
508 {" unsupported_certificate", 43},
509 {" certificate_revoked", 44},
510 {" certificate_expired", 45},
511 {" certificate_unknown", 46},
512 {" illegal_parameter", 47},
513 {" unknown_ca", 48},
514 {" access_denied", 49},
515 {" decode_error", 50},
516 {" decrypt_error", 51},
517 {" export_restriction", 60},
518 {" protocol_version", 70},
519 {" insufficient_security", 71},
520 {" internal_error", 80},
521 {" inappropriate_fallback", 86},
522 {" user_canceled", 90},
523 {" no_renegotiation", 100},
524 {" missing_extension", 109},
525 {" unsupported_extension", 110},
526 {" certificate_unobtainable", 111},
527 {" unrecognized_name", 112},
528 {" bad_certificate_status_response", 113},
529 {" bad_certificate_hash_value", 114},
530 {" unknown_psk_identity", 115},
531 {" certificate_required", 116},
532 {NULL}
533 };
534
535 static STRINT_PAIR handshakes[] = {
536 {", HelloRequest", SSL3_MT_HELLO_REQUEST},
537 {", ClientHello", SSL3_MT_CLIENT_HELLO},
538 {", ServerHello", SSL3_MT_SERVER_HELLO},
539 {", HelloVerifyRequest", DTLS1_MT_HELLO_VERIFY_REQUEST},
540 {", NewSessionTicket", SSL3_MT_NEWSESSION_TICKET},
541 {", EndOfEarlyData", SSL3_MT_END_OF_EARLY_DATA},
542 {", EncryptedExtensions", SSL3_MT_ENCRYPTED_EXTENSIONS},
543 {", Certificate", SSL3_MT_CERTIFICATE},
544 {", ServerKeyExchange", SSL3_MT_SERVER_KEY_EXCHANGE},
545 {", CertificateRequest", SSL3_MT_CERTIFICATE_REQUEST},
546 {", ServerHelloDone", SSL3_MT_SERVER_DONE},
547 {", CertificateVerify", SSL3_MT_CERTIFICATE_VERIFY},
548 {", ClientKeyExchange", SSL3_MT_CLIENT_KEY_EXCHANGE},
549 {", Finished", SSL3_MT_FINISHED},
550 {", CertificateUrl", SSL3_MT_CERTIFICATE_URL},
551 {", CertificateStatus", SSL3_MT_CERTIFICATE_STATUS},
552 {", SupplementalData", SSL3_MT_SUPPLEMENTAL_DATA},
553 {", KeyUpdate", SSL3_MT_KEY_UPDATE},
554 #ifndef OPENSSL_NO_NEXTPROTONEG
555 {", NextProto", SSL3_MT_NEXT_PROTO},
556 #endif
557 {", MessageHash", SSL3_MT_MESSAGE_HASH},
558 {NULL}
559 };
560
msg_cb(int write_p,int version,int content_type,const void * buf,size_t len,SSL * ssl,void * arg)561 void msg_cb(int write_p, int version, int content_type, const void *buf,
562 size_t len, SSL *ssl, void *arg)
563 {
564 BIO *bio = arg;
565 const char *str_write_p = write_p ? ">>>" : "<<<";
566 const char *str_version = lookup(version, ssl_versions, "???");
567 const char *str_content_type = "", *str_details1 = "", *str_details2 = "";
568 const unsigned char* bp = buf;
569
570 if (version == SSL3_VERSION ||
571 version == TLS1_VERSION ||
572 version == TLS1_1_VERSION ||
573 version == TLS1_2_VERSION ||
574 version == TLS1_3_VERSION ||
575 version == DTLS1_VERSION || version == DTLS1_BAD_VER) {
576 switch (content_type) {
577 case 20:
578 str_content_type = ", ChangeCipherSpec";
579 break;
580 case 21:
581 str_content_type = ", Alert";
582 str_details1 = ", ???";
583 if (len == 2) {
584 switch (bp[0]) {
585 case 1:
586 str_details1 = ", warning";
587 break;
588 case 2:
589 str_details1 = ", fatal";
590 break;
591 }
592 str_details2 = lookup((int)bp[1], alert_types, " ???");
593 }
594 break;
595 case 22:
596 str_content_type = ", Handshake";
597 str_details1 = "???";
598 if (len > 0)
599 str_details1 = lookup((int)bp[0], handshakes, "???");
600 break;
601 case 23:
602 str_content_type = ", ApplicationData";
603 break;
604 #ifndef OPENSSL_NO_HEARTBEATS
605 case 24:
606 str_details1 = ", Heartbeat";
607
608 if (len > 0) {
609 switch (bp[0]) {
610 case 1:
611 str_details1 = ", HeartbeatRequest";
612 break;
613 case 2:
614 str_details1 = ", HeartbeatResponse";
615 break;
616 }
617 }
618 break;
619 #endif
620 }
621 }
622
623 BIO_printf(bio, "%s %s%s [length %04lx]%s%s\n", str_write_p, str_version,
624 str_content_type, (unsigned long)len, str_details1,
625 str_details2);
626
627 if (len > 0) {
628 size_t num, i;
629
630 BIO_printf(bio, " ");
631 num = len;
632 for (i = 0; i < num; i++) {
633 if (i % 16 == 0 && i > 0)
634 BIO_printf(bio, "\n ");
635 BIO_printf(bio, " %02x", ((const unsigned char *)buf)[i]);
636 }
637 if (i < len)
638 BIO_printf(bio, " ...");
639 BIO_printf(bio, "\n");
640 }
641 (void)BIO_flush(bio);
642 }
643
644 static STRINT_PAIR tlsext_types[] = {
645 {"server name", TLSEXT_TYPE_server_name},
646 {"max fragment length", TLSEXT_TYPE_max_fragment_length},
647 {"client certificate URL", TLSEXT_TYPE_client_certificate_url},
648 {"trusted CA keys", TLSEXT_TYPE_trusted_ca_keys},
649 {"truncated HMAC", TLSEXT_TYPE_truncated_hmac},
650 {"status request", TLSEXT_TYPE_status_request},
651 {"user mapping", TLSEXT_TYPE_user_mapping},
652 {"client authz", TLSEXT_TYPE_client_authz},
653 {"server authz", TLSEXT_TYPE_server_authz},
654 {"cert type", TLSEXT_TYPE_cert_type},
655 {"supported_groups", TLSEXT_TYPE_supported_groups},
656 {"EC point formats", TLSEXT_TYPE_ec_point_formats},
657 {"SRP", TLSEXT_TYPE_srp},
658 {"signature algorithms", TLSEXT_TYPE_signature_algorithms},
659 {"use SRTP", TLSEXT_TYPE_use_srtp},
660 {"heartbeat", TLSEXT_TYPE_heartbeat},
661 {"session ticket", TLSEXT_TYPE_session_ticket},
662 {"renegotiation info", TLSEXT_TYPE_renegotiate},
663 {"signed certificate timestamps", TLSEXT_TYPE_signed_certificate_timestamp},
664 {"TLS padding", TLSEXT_TYPE_padding},
665 #ifdef TLSEXT_TYPE_next_proto_neg
666 {"next protocol", TLSEXT_TYPE_next_proto_neg},
667 #endif
668 #ifdef TLSEXT_TYPE_encrypt_then_mac
669 {"encrypt-then-mac", TLSEXT_TYPE_encrypt_then_mac},
670 #endif
671 #ifdef TLSEXT_TYPE_application_layer_protocol_negotiation
672 {"application layer protocol negotiation",
673 TLSEXT_TYPE_application_layer_protocol_negotiation},
674 #endif
675 #ifdef TLSEXT_TYPE_extended_master_secret
676 {"extended master secret", TLSEXT_TYPE_extended_master_secret},
677 #endif
678 {"key share", TLSEXT_TYPE_key_share},
679 {"supported versions", TLSEXT_TYPE_supported_versions},
680 {"psk", TLSEXT_TYPE_psk},
681 {"psk kex modes", TLSEXT_TYPE_psk_kex_modes},
682 {"certificate authorities", TLSEXT_TYPE_certificate_authorities},
683 {"post handshake auth", TLSEXT_TYPE_post_handshake_auth},
684 {NULL}
685 };
686
687 /* from rfc8446 4.2.3. + gost (https://tools.ietf.org/id/draft-smyshlyaev-tls12-gost-suites-04.html) */
688 static STRINT_PAIR signature_tls13_scheme_list[] = {
689 {"rsa_pkcs1_sha1", 0x0201 /* TLSEXT_SIGALG_rsa_pkcs1_sha1 */},
690 {"ecdsa_sha1", 0x0203 /* TLSEXT_SIGALG_ecdsa_sha1 */},
691 /* {"rsa_pkcs1_sha224", 0x0301 TLSEXT_SIGALG_rsa_pkcs1_sha224}, not in rfc8446 */
692 /* {"ecdsa_sha224", 0x0303 TLSEXT_SIGALG_ecdsa_sha224} not in rfc8446 */
693 {"rsa_pkcs1_sha256", 0x0401 /* TLSEXT_SIGALG_rsa_pkcs1_sha256 */},
694 {"ecdsa_secp256r1_sha256", 0x0403 /* TLSEXT_SIGALG_ecdsa_secp256r1_sha256 */},
695 {"rsa_pkcs1_sha384", 0x0501 /* TLSEXT_SIGALG_rsa_pkcs1_sha384 */},
696 {"ecdsa_secp384r1_sha384", 0x0503 /* TLSEXT_SIGALG_ecdsa_secp384r1_sha384 */},
697 {"rsa_pkcs1_sha512", 0x0601 /* TLSEXT_SIGALG_rsa_pkcs1_sha512 */},
698 {"ecdsa_secp521r1_sha512", 0x0603 /* TLSEXT_SIGALG_ecdsa_secp521r1_sha512 */},
699 {"rsa_pss_rsae_sha256", 0x0804 /* TLSEXT_SIGALG_rsa_pss_rsae_sha256 */},
700 {"rsa_pss_rsae_sha384", 0x0805 /* TLSEXT_SIGALG_rsa_pss_rsae_sha384 */},
701 {"rsa_pss_rsae_sha512", 0x0806 /* TLSEXT_SIGALG_rsa_pss_rsae_sha512 */},
702 {"ed25519", 0x0807 /* TLSEXT_SIGALG_ed25519 */},
703 {"ed448", 0x0808 /* TLSEXT_SIGALG_ed448 */},
704 {"rsa_pss_pss_sha256", 0x0809 /* TLSEXT_SIGALG_rsa_pss_pss_sha256 */},
705 {"rsa_pss_pss_sha384", 0x080a /* TLSEXT_SIGALG_rsa_pss_pss_sha384 */},
706 {"rsa_pss_pss_sha512", 0x080b /* TLSEXT_SIGALG_rsa_pss_pss_sha512 */},
707 {"gostr34102001", 0xeded /* TLSEXT_SIGALG_gostr34102001_gostr3411 */},
708 {"gostr34102012_256", 0xeeee /* TLSEXT_SIGALG_gostr34102012_256_gostr34112012_256 */},
709 {"gostr34102012_512", 0xefef /* TLSEXT_SIGALG_gostr34102012_512_gostr34112012_512 */},
710 {NULL}
711 };
712
713 /* from rfc5246 7.4.1.4.1. */
714 static STRINT_PAIR signature_tls12_alg_list[] = {
715 {"anonymous", TLSEXT_signature_anonymous /* 0 */},
716 {"RSA", TLSEXT_signature_rsa /* 1 */},
717 {"DSA", TLSEXT_signature_dsa /* 2 */},
718 {"ECDSA", TLSEXT_signature_ecdsa /* 3 */},
719 {NULL}
720 };
721
722 /* from rfc5246 7.4.1.4.1. */
723 static STRINT_PAIR signature_tls12_hash_list[] = {
724 {"none", TLSEXT_hash_none /* 0 */},
725 {"MD5", TLSEXT_hash_md5 /* 1 */},
726 {"SHA1", TLSEXT_hash_sha1 /* 2 */},
727 {"SHA224", TLSEXT_hash_sha224 /* 3 */},
728 {"SHA256", TLSEXT_hash_sha256 /* 4 */},
729 {"SHA384", TLSEXT_hash_sha384 /* 5 */},
730 {"SHA512", TLSEXT_hash_sha512 /* 6 */},
731 {NULL}
732 };
733
tlsext_cb(SSL * s,int client_server,int type,const unsigned char * data,int len,void * arg)734 void tlsext_cb(SSL *s, int client_server, int type,
735 const unsigned char *data, int len, void *arg)
736 {
737 BIO *bio = arg;
738 const char *extname = lookup(type, tlsext_types, "unknown");
739
740 BIO_printf(bio, "TLS %s extension \"%s\" (id=%d), len=%d\n",
741 client_server ? "server" : "client", extname, type, len);
742 BIO_dump(bio, (const char *)data, len);
743 (void)BIO_flush(bio);
744 }
745
746 #ifndef OPENSSL_NO_SOCK
generate_cookie_callback(SSL * ssl,unsigned char * cookie,unsigned int * cookie_len)747 int generate_cookie_callback(SSL *ssl, unsigned char *cookie,
748 unsigned int *cookie_len)
749 {
750 unsigned char *buffer;
751 size_t length = 0;
752 unsigned short port;
753 BIO_ADDR *lpeer = NULL, *peer = NULL;
754
755 /* Initialize a random secret */
756 if (!cookie_initialized) {
757 if (RAND_bytes(cookie_secret, COOKIE_SECRET_LENGTH) <= 0) {
758 BIO_printf(bio_err, "error setting random cookie secret\n");
759 return 0;
760 }
761 cookie_initialized = 1;
762 }
763
764 if (SSL_is_dtls(ssl)) {
765 lpeer = peer = BIO_ADDR_new();
766 if (peer == NULL) {
767 BIO_printf(bio_err, "memory full\n");
768 return 0;
769 }
770
771 /* Read peer information */
772 (void)BIO_dgram_get_peer(SSL_get_rbio(ssl), peer);
773 } else {
774 peer = ourpeer;
775 }
776
777 /* Create buffer with peer's address and port */
778 if (!BIO_ADDR_rawaddress(peer, NULL, &length)) {
779 BIO_printf(bio_err, "Failed getting peer address\n");
780 return 0;
781 }
782 OPENSSL_assert(length != 0);
783 port = BIO_ADDR_rawport(peer);
784 length += sizeof(port);
785 buffer = app_malloc(length, "cookie generate buffer");
786
787 memcpy(buffer, &port, sizeof(port));
788 BIO_ADDR_rawaddress(peer, buffer + sizeof(port), NULL);
789
790 /* Calculate HMAC of buffer using the secret */
791 HMAC(EVP_sha1(), cookie_secret, COOKIE_SECRET_LENGTH,
792 buffer, length, cookie, cookie_len);
793
794 OPENSSL_free(buffer);
795 BIO_ADDR_free(lpeer);
796
797 return 1;
798 }
799
verify_cookie_callback(SSL * ssl,const unsigned char * cookie,unsigned int cookie_len)800 int verify_cookie_callback(SSL *ssl, const unsigned char *cookie,
801 unsigned int cookie_len)
802 {
803 unsigned char result[EVP_MAX_MD_SIZE];
804 unsigned int resultlength;
805
806 /* Note: we check cookie_initialized because if it's not,
807 * it cannot be valid */
808 if (cookie_initialized
809 && generate_cookie_callback(ssl, result, &resultlength)
810 && cookie_len == resultlength
811 && memcmp(result, cookie, resultlength) == 0)
812 return 1;
813
814 return 0;
815 }
816
generate_stateless_cookie_callback(SSL * ssl,unsigned char * cookie,size_t * cookie_len)817 int generate_stateless_cookie_callback(SSL *ssl, unsigned char *cookie,
818 size_t *cookie_len)
819 {
820 unsigned int temp;
821 int res = generate_cookie_callback(ssl, cookie, &temp);
822
823 if (res != 0)
824 *cookie_len = temp;
825 return res;
826 }
827
verify_stateless_cookie_callback(SSL * ssl,const unsigned char * cookie,size_t cookie_len)828 int verify_stateless_cookie_callback(SSL *ssl, const unsigned char *cookie,
829 size_t cookie_len)
830 {
831 return verify_cookie_callback(ssl, cookie, cookie_len);
832 }
833
834 #endif
835
836 /*
837 * Example of extended certificate handling. Where the standard support of
838 * one certificate per algorithm is not sufficient an application can decide
839 * which certificate(s) to use at runtime based on whatever criteria it deems
840 * appropriate.
841 */
842
843 /* Linked list of certificates, keys and chains */
844 struct ssl_excert_st {
845 int certform;
846 const char *certfile;
847 int keyform;
848 const char *keyfile;
849 const char *chainfile;
850 X509 *cert;
851 EVP_PKEY *key;
852 STACK_OF(X509) *chain;
853 int build_chain;
854 struct ssl_excert_st *next, *prev;
855 };
856
857 static STRINT_PAIR chain_flags[] = {
858 {"Overall Validity", CERT_PKEY_VALID},
859 {"Sign with EE key", CERT_PKEY_SIGN},
860 {"EE signature", CERT_PKEY_EE_SIGNATURE},
861 {"CA signature", CERT_PKEY_CA_SIGNATURE},
862 {"EE key parameters", CERT_PKEY_EE_PARAM},
863 {"CA key parameters", CERT_PKEY_CA_PARAM},
864 {"Explicitly sign with EE key", CERT_PKEY_EXPLICIT_SIGN},
865 {"Issuer Name", CERT_PKEY_ISSUER_NAME},
866 {"Certificate Type", CERT_PKEY_CERT_TYPE},
867 {NULL}
868 };
869
print_chain_flags(SSL * s,int flags)870 static void print_chain_flags(SSL *s, int flags)
871 {
872 STRINT_PAIR *pp;
873
874 for (pp = chain_flags; pp->name; ++pp)
875 BIO_printf(bio_err, "\t%s: %s\n",
876 pp->name,
877 (flags & pp->retval) ? "OK" : "NOT OK");
878 BIO_printf(bio_err, "\tSuite B: ");
879 if (SSL_set_cert_flags(s, 0) & SSL_CERT_FLAG_SUITEB_128_LOS)
880 BIO_puts(bio_err, flags & CERT_PKEY_SUITEB ? "OK\n" : "NOT OK\n");
881 else
882 BIO_printf(bio_err, "not tested\n");
883 }
884
885 /*
886 * Very basic selection callback: just use any certificate chain reported as
887 * valid. More sophisticated could prioritise according to local policy.
888 */
set_cert_cb(SSL * ssl,void * arg)889 static int set_cert_cb(SSL *ssl, void *arg)
890 {
891 int i, rv;
892 SSL_EXCERT *exc = arg;
893 #ifdef CERT_CB_TEST_RETRY
894 static int retry_cnt;
895 if (retry_cnt < 5) {
896 retry_cnt++;
897 BIO_printf(bio_err,
898 "Certificate callback retry test: count %d\n",
899 retry_cnt);
900 return -1;
901 }
902 #endif
903 SSL_certs_clear(ssl);
904
905 if (exc == NULL)
906 return 1;
907
908 /*
909 * Go to end of list and traverse backwards since we prepend newer
910 * entries this retains the original order.
911 */
912 while (exc->next != NULL)
913 exc = exc->next;
914
915 i = 0;
916
917 while (exc != NULL) {
918 i++;
919 rv = SSL_check_chain(ssl, exc->cert, exc->key, exc->chain);
920 BIO_printf(bio_err, "Checking cert chain %d:\nSubject: ", i);
921 X509_NAME_print_ex(bio_err, X509_get_subject_name(exc->cert), 0,
922 get_nameopt());
923 BIO_puts(bio_err, "\n");
924 print_chain_flags(ssl, rv);
925 if (rv & CERT_PKEY_VALID) {
926 if (!SSL_use_certificate(ssl, exc->cert)
927 || !SSL_use_PrivateKey(ssl, exc->key)) {
928 return 0;
929 }
930 /*
931 * NB: we wouldn't normally do this as it is not efficient
932 * building chains on each connection better to cache the chain
933 * in advance.
934 */
935 if (exc->build_chain) {
936 if (!SSL_build_cert_chain(ssl, 0))
937 return 0;
938 } else if (exc->chain != NULL) {
939 if (!SSL_set1_chain(ssl, exc->chain))
940 return 0;
941 }
942 }
943 exc = exc->prev;
944 }
945 return 1;
946 }
947
ssl_ctx_set_excert(SSL_CTX * ctx,SSL_EXCERT * exc)948 void ssl_ctx_set_excert(SSL_CTX *ctx, SSL_EXCERT *exc)
949 {
950 SSL_CTX_set_cert_cb(ctx, set_cert_cb, exc);
951 }
952
ssl_excert_prepend(SSL_EXCERT ** pexc)953 static int ssl_excert_prepend(SSL_EXCERT **pexc)
954 {
955 SSL_EXCERT *exc = app_malloc(sizeof(*exc), "prepend cert");
956
957 memset(exc, 0, sizeof(*exc));
958
959 exc->next = *pexc;
960 *pexc = exc;
961
962 if (exc->next) {
963 exc->certform = exc->next->certform;
964 exc->keyform = exc->next->keyform;
965 exc->next->prev = exc;
966 } else {
967 exc->certform = FORMAT_PEM;
968 exc->keyform = FORMAT_PEM;
969 }
970 return 1;
971
972 }
973
ssl_excert_free(SSL_EXCERT * exc)974 void ssl_excert_free(SSL_EXCERT *exc)
975 {
976 SSL_EXCERT *curr;
977
978 if (exc == NULL)
979 return;
980 while (exc) {
981 X509_free(exc->cert);
982 EVP_PKEY_free(exc->key);
983 sk_X509_pop_free(exc->chain, X509_free);
984 curr = exc;
985 exc = exc->next;
986 OPENSSL_free(curr);
987 }
988 }
989
load_excert(SSL_EXCERT ** pexc)990 int load_excert(SSL_EXCERT **pexc)
991 {
992 SSL_EXCERT *exc = *pexc;
993 if (exc == NULL)
994 return 1;
995 /* If nothing in list, free and set to NULL */
996 if (exc->certfile == NULL && exc->next == NULL) {
997 ssl_excert_free(exc);
998 *pexc = NULL;
999 return 1;
1000 }
1001 for (; exc; exc = exc->next) {
1002 if (exc->certfile == NULL) {
1003 BIO_printf(bio_err, "Missing filename\n");
1004 return 0;
1005 }
1006 exc->cert = load_cert(exc->certfile, exc->certform,
1007 "Server Certificate");
1008 if (exc->cert == NULL)
1009 return 0;
1010 if (exc->keyfile != NULL) {
1011 exc->key = load_key(exc->keyfile, exc->keyform,
1012 0, NULL, NULL, "Server Key");
1013 } else {
1014 exc->key = load_key(exc->certfile, exc->certform,
1015 0, NULL, NULL, "Server Key");
1016 }
1017 if (exc->key == NULL)
1018 return 0;
1019 if (exc->chainfile != NULL) {
1020 if (!load_certs(exc->chainfile, &exc->chain, FORMAT_PEM, NULL,
1021 "Server Chain"))
1022 return 0;
1023 }
1024 }
1025 return 1;
1026 }
1027
1028 enum range { OPT_X_ENUM };
1029
args_excert(int opt,SSL_EXCERT ** pexc)1030 int args_excert(int opt, SSL_EXCERT **pexc)
1031 {
1032 SSL_EXCERT *exc = *pexc;
1033
1034 assert(opt > OPT_X__FIRST);
1035 assert(opt < OPT_X__LAST);
1036
1037 if (exc == NULL) {
1038 if (!ssl_excert_prepend(&exc)) {
1039 BIO_printf(bio_err, " %s: Error initialising xcert\n",
1040 opt_getprog());
1041 goto err;
1042 }
1043 *pexc = exc;
1044 }
1045
1046 switch ((enum range)opt) {
1047 case OPT_X__FIRST:
1048 case OPT_X__LAST:
1049 return 0;
1050 case OPT_X_CERT:
1051 if (exc->certfile != NULL && !ssl_excert_prepend(&exc)) {
1052 BIO_printf(bio_err, "%s: Error adding xcert\n", opt_getprog());
1053 goto err;
1054 }
1055 *pexc = exc;
1056 exc->certfile = opt_arg();
1057 break;
1058 case OPT_X_KEY:
1059 if (exc->keyfile != NULL) {
1060 BIO_printf(bio_err, "%s: Key already specified\n", opt_getprog());
1061 goto err;
1062 }
1063 exc->keyfile = opt_arg();
1064 break;
1065 case OPT_X_CHAIN:
1066 if (exc->chainfile != NULL) {
1067 BIO_printf(bio_err, "%s: Chain already specified\n",
1068 opt_getprog());
1069 goto err;
1070 }
1071 exc->chainfile = opt_arg();
1072 break;
1073 case OPT_X_CHAIN_BUILD:
1074 exc->build_chain = 1;
1075 break;
1076 case OPT_X_CERTFORM:
1077 if (!opt_format(opt_arg(), OPT_FMT_PEMDER, &exc->certform))
1078 return 0;
1079 break;
1080 case OPT_X_KEYFORM:
1081 if (!opt_format(opt_arg(), OPT_FMT_PEMDER, &exc->keyform))
1082 return 0;
1083 break;
1084 }
1085 return 1;
1086
1087 err:
1088 ERR_print_errors(bio_err);
1089 ssl_excert_free(exc);
1090 *pexc = NULL;
1091 return 0;
1092 }
1093
print_raw_cipherlist(SSL * s)1094 static void print_raw_cipherlist(SSL *s)
1095 {
1096 const unsigned char *rlist;
1097 static const unsigned char scsv_id[] = { 0, 0xFF };
1098 size_t i, rlistlen, num;
1099 if (!SSL_is_server(s))
1100 return;
1101 num = SSL_get0_raw_cipherlist(s, NULL);
1102 OPENSSL_assert(num == 2);
1103 rlistlen = SSL_get0_raw_cipherlist(s, &rlist);
1104 BIO_puts(bio_err, "Client cipher list: ");
1105 for (i = 0; i < rlistlen; i += num, rlist += num) {
1106 const SSL_CIPHER *c = SSL_CIPHER_find(s, rlist);
1107 if (i)
1108 BIO_puts(bio_err, ":");
1109 if (c != NULL) {
1110 BIO_puts(bio_err, SSL_CIPHER_get_name(c));
1111 } else if (memcmp(rlist, scsv_id, num) == 0) {
1112 BIO_puts(bio_err, "SCSV");
1113 } else {
1114 size_t j;
1115 BIO_puts(bio_err, "0x");
1116 for (j = 0; j < num; j++)
1117 BIO_printf(bio_err, "%02X", rlist[j]);
1118 }
1119 }
1120 BIO_puts(bio_err, "\n");
1121 }
1122
1123 /*
1124 * Hex encoder for TLSA RRdata, not ':' delimited.
1125 */
hexencode(const unsigned char * data,size_t len)1126 static char *hexencode(const unsigned char *data, size_t len)
1127 {
1128 static const char *hex = "0123456789abcdef";
1129 char *out;
1130 char *cp;
1131 size_t outlen = 2 * len + 1;
1132 int ilen = (int) outlen;
1133
1134 if (outlen < len || ilen < 0 || outlen != (size_t)ilen) {
1135 BIO_printf(bio_err, "%s: %zu-byte buffer too large to hexencode\n",
1136 opt_getprog(), len);
1137 exit(1);
1138 }
1139 cp = out = app_malloc(ilen, "TLSA hex data buffer");
1140
1141 while (len-- > 0) {
1142 *cp++ = hex[(*data >> 4) & 0x0f];
1143 *cp++ = hex[*data++ & 0x0f];
1144 }
1145 *cp = '\0';
1146 return out;
1147 }
1148
print_verify_detail(SSL * s,BIO * bio)1149 void print_verify_detail(SSL *s, BIO *bio)
1150 {
1151 int mdpth;
1152 EVP_PKEY *mspki;
1153 long verify_err = SSL_get_verify_result(s);
1154
1155 if (verify_err == X509_V_OK) {
1156 const char *peername = SSL_get0_peername(s);
1157
1158 BIO_printf(bio, "Verification: OK\n");
1159 if (peername != NULL)
1160 BIO_printf(bio, "Verified peername: %s\n", peername);
1161 } else {
1162 const char *reason = X509_verify_cert_error_string(verify_err);
1163
1164 BIO_printf(bio, "Verification error: %s\n", reason);
1165 }
1166
1167 if ((mdpth = SSL_get0_dane_authority(s, NULL, &mspki)) >= 0) {
1168 uint8_t usage, selector, mtype;
1169 const unsigned char *data = NULL;
1170 size_t dlen = 0;
1171 char *hexdata;
1172
1173 mdpth = SSL_get0_dane_tlsa(s, &usage, &selector, &mtype, &data, &dlen);
1174
1175 /*
1176 * The TLSA data field can be quite long when it is a certificate,
1177 * public key or even a SHA2-512 digest. Because the initial octets of
1178 * ASN.1 certificates and public keys contain mostly boilerplate OIDs
1179 * and lengths, we show the last 12 bytes of the data instead, as these
1180 * are more likely to distinguish distinct TLSA records.
1181 */
1182 #define TLSA_TAIL_SIZE 12
1183 if (dlen > TLSA_TAIL_SIZE)
1184 hexdata = hexencode(data + dlen - TLSA_TAIL_SIZE, TLSA_TAIL_SIZE);
1185 else
1186 hexdata = hexencode(data, dlen);
1187 BIO_printf(bio, "DANE TLSA %d %d %d %s%s %s at depth %d\n",
1188 usage, selector, mtype,
1189 (dlen > TLSA_TAIL_SIZE) ? "..." : "", hexdata,
1190 (mspki != NULL) ? "signed the certificate" :
1191 mdpth ? "matched TA certificate" : "matched EE certificate",
1192 mdpth);
1193 OPENSSL_free(hexdata);
1194 }
1195 }
1196
print_ssl_summary(SSL * s)1197 void print_ssl_summary(SSL *s)
1198 {
1199 const SSL_CIPHER *c;
1200 X509 *peer;
1201
1202 BIO_printf(bio_err, "Protocol version: %s\n", SSL_get_version(s));
1203 print_raw_cipherlist(s);
1204 c = SSL_get_current_cipher(s);
1205 BIO_printf(bio_err, "Ciphersuite: %s\n", SSL_CIPHER_get_name(c));
1206 do_print_sigalgs(bio_err, s, 0);
1207 peer = SSL_get_peer_certificate(s);
1208 if (peer != NULL) {
1209 int nid;
1210
1211 BIO_puts(bio_err, "Peer certificate: ");
1212 X509_NAME_print_ex(bio_err, X509_get_subject_name(peer),
1213 0, get_nameopt());
1214 BIO_puts(bio_err, "\n");
1215 if (SSL_get_peer_signature_nid(s, &nid))
1216 BIO_printf(bio_err, "Hash used: %s\n", OBJ_nid2sn(nid));
1217 if (SSL_get_peer_signature_type_nid(s, &nid))
1218 BIO_printf(bio_err, "Signature type: %s\n", get_sigtype(nid));
1219 print_verify_detail(s, bio_err);
1220 } else {
1221 BIO_puts(bio_err, "No peer certificate\n");
1222 }
1223 X509_free(peer);
1224 #ifndef OPENSSL_NO_EC
1225 ssl_print_point_formats(bio_err, s);
1226 if (SSL_is_server(s))
1227 ssl_print_groups(bio_err, s, 1);
1228 else
1229 ssl_print_tmp_key(bio_err, s);
1230 #else
1231 if (!SSL_is_server(s))
1232 ssl_print_tmp_key(bio_err, s);
1233 #endif
1234 }
1235
config_ctx(SSL_CONF_CTX * cctx,STACK_OF (OPENSSL_STRING)* str,SSL_CTX * ctx)1236 int config_ctx(SSL_CONF_CTX *cctx, STACK_OF(OPENSSL_STRING) *str,
1237 SSL_CTX *ctx)
1238 {
1239 int i;
1240
1241 SSL_CONF_CTX_set_ssl_ctx(cctx, ctx);
1242 for (i = 0; i < sk_OPENSSL_STRING_num(str); i += 2) {
1243 const char *flag = sk_OPENSSL_STRING_value(str, i);
1244 const char *arg = sk_OPENSSL_STRING_value(str, i + 1);
1245 if (SSL_CONF_cmd(cctx, flag, arg) <= 0) {
1246 if (arg != NULL)
1247 BIO_printf(bio_err, "Error with command: \"%s %s\"\n",
1248 flag, arg);
1249 else
1250 BIO_printf(bio_err, "Error with command: \"%s\"\n", flag);
1251 ERR_print_errors(bio_err);
1252 return 0;
1253 }
1254 }
1255 if (!SSL_CONF_CTX_finish(cctx)) {
1256 BIO_puts(bio_err, "Error finishing context\n");
1257 ERR_print_errors(bio_err);
1258 return 0;
1259 }
1260 return 1;
1261 }
1262
add_crls_store(X509_STORE * st,STACK_OF (X509_CRL)* crls)1263 static int add_crls_store(X509_STORE *st, STACK_OF(X509_CRL) *crls)
1264 {
1265 X509_CRL *crl;
1266 int i;
1267 for (i = 0; i < sk_X509_CRL_num(crls); i++) {
1268 crl = sk_X509_CRL_value(crls, i);
1269 X509_STORE_add_crl(st, crl);
1270 }
1271 return 1;
1272 }
1273
ssl_ctx_add_crls(SSL_CTX * ctx,STACK_OF (X509_CRL)* crls,int crl_download)1274 int ssl_ctx_add_crls(SSL_CTX *ctx, STACK_OF(X509_CRL) *crls, int crl_download)
1275 {
1276 X509_STORE *st;
1277 st = SSL_CTX_get_cert_store(ctx);
1278 add_crls_store(st, crls);
1279 if (crl_download)
1280 store_setup_crl_download(st);
1281 return 1;
1282 }
1283
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)1284 int ssl_load_stores(SSL_CTX *ctx,
1285 const char *vfyCApath, const char *vfyCAfile,
1286 const char *chCApath, const char *chCAfile,
1287 STACK_OF(X509_CRL) *crls, int crl_download)
1288 {
1289 X509_STORE *vfy = NULL, *ch = NULL;
1290 int rv = 0;
1291 if (vfyCApath != NULL || vfyCAfile != NULL) {
1292 vfy = X509_STORE_new();
1293 if (vfy == NULL)
1294 goto err;
1295 if (!X509_STORE_load_locations(vfy, vfyCAfile, vfyCApath))
1296 goto err;
1297 add_crls_store(vfy, crls);
1298 SSL_CTX_set1_verify_cert_store(ctx, vfy);
1299 if (crl_download)
1300 store_setup_crl_download(vfy);
1301 }
1302 if (chCApath != NULL || chCAfile != NULL) {
1303 ch = X509_STORE_new();
1304 if (ch == NULL)
1305 goto err;
1306 if (!X509_STORE_load_locations(ch, chCAfile, chCApath))
1307 goto err;
1308 SSL_CTX_set1_chain_cert_store(ctx, ch);
1309 }
1310 rv = 1;
1311 err:
1312 X509_STORE_free(vfy);
1313 X509_STORE_free(ch);
1314 return rv;
1315 }
1316
1317 /* Verbose print out of security callback */
1318
1319 typedef struct {
1320 BIO *out;
1321 int verbose;
1322 int (*old_cb) (const SSL *s, const SSL_CTX *ctx, int op, int bits, int nid,
1323 void *other, void *ex);
1324 } security_debug_ex;
1325
1326 static STRINT_PAIR callback_types[] = {
1327 {"Supported Ciphersuite", SSL_SECOP_CIPHER_SUPPORTED},
1328 {"Shared Ciphersuite", SSL_SECOP_CIPHER_SHARED},
1329 {"Check Ciphersuite", SSL_SECOP_CIPHER_CHECK},
1330 #ifndef OPENSSL_NO_DH
1331 {"Temp DH key bits", SSL_SECOP_TMP_DH},
1332 #endif
1333 {"Supported Curve", SSL_SECOP_CURVE_SUPPORTED},
1334 {"Shared Curve", SSL_SECOP_CURVE_SHARED},
1335 {"Check Curve", SSL_SECOP_CURVE_CHECK},
1336 {"Supported Signature Algorithm", SSL_SECOP_SIGALG_SUPPORTED},
1337 {"Shared Signature Algorithm", SSL_SECOP_SIGALG_SHARED},
1338 {"Check Signature Algorithm", SSL_SECOP_SIGALG_CHECK},
1339 {"Signature Algorithm mask", SSL_SECOP_SIGALG_MASK},
1340 {"Certificate chain EE key", SSL_SECOP_EE_KEY},
1341 {"Certificate chain CA key", SSL_SECOP_CA_KEY},
1342 {"Peer Chain EE key", SSL_SECOP_PEER_EE_KEY},
1343 {"Peer Chain CA key", SSL_SECOP_PEER_CA_KEY},
1344 {"Certificate chain CA digest", SSL_SECOP_CA_MD},
1345 {"Peer chain CA digest", SSL_SECOP_PEER_CA_MD},
1346 {"SSL compression", SSL_SECOP_COMPRESSION},
1347 {"Session ticket", SSL_SECOP_TICKET},
1348 {NULL}
1349 };
1350
security_callback_debug(const SSL * s,const SSL_CTX * ctx,int op,int bits,int nid,void * other,void * ex)1351 static int security_callback_debug(const SSL *s, const SSL_CTX *ctx,
1352 int op, int bits, int nid,
1353 void *other, void *ex)
1354 {
1355 security_debug_ex *sdb = ex;
1356 int rv, show_bits = 1, cert_md = 0;
1357 const char *nm;
1358 int show_nm;
1359 rv = sdb->old_cb(s, ctx, op, bits, nid, other, ex);
1360 if (rv == 1 && sdb->verbose < 2)
1361 return 1;
1362 BIO_puts(sdb->out, "Security callback: ");
1363
1364 nm = lookup(op, callback_types, NULL);
1365 show_nm = nm != NULL;
1366 switch (op) {
1367 case SSL_SECOP_TICKET:
1368 case SSL_SECOP_COMPRESSION:
1369 show_bits = 0;
1370 show_nm = 0;
1371 break;
1372 case SSL_SECOP_VERSION:
1373 BIO_printf(sdb->out, "Version=%s", lookup(nid, ssl_versions, "???"));
1374 show_bits = 0;
1375 show_nm = 0;
1376 break;
1377 case SSL_SECOP_CA_MD:
1378 case SSL_SECOP_PEER_CA_MD:
1379 cert_md = 1;
1380 break;
1381 case SSL_SECOP_SIGALG_SUPPORTED:
1382 case SSL_SECOP_SIGALG_SHARED:
1383 case SSL_SECOP_SIGALG_CHECK:
1384 case SSL_SECOP_SIGALG_MASK:
1385 show_nm = 0;
1386 break;
1387 }
1388 if (show_nm)
1389 BIO_printf(sdb->out, "%s=", nm);
1390
1391 switch (op & SSL_SECOP_OTHER_TYPE) {
1392
1393 case SSL_SECOP_OTHER_CIPHER:
1394 BIO_puts(sdb->out, SSL_CIPHER_get_name(other));
1395 break;
1396
1397 #ifndef OPENSSL_NO_EC
1398 case SSL_SECOP_OTHER_CURVE:
1399 {
1400 const char *cname;
1401 cname = EC_curve_nid2nist(nid);
1402 if (cname == NULL)
1403 cname = OBJ_nid2sn(nid);
1404 BIO_puts(sdb->out, cname);
1405 }
1406 break;
1407 #endif
1408 #ifndef OPENSSL_NO_DH
1409 case SSL_SECOP_OTHER_DH:
1410 {
1411 DH *dh = other;
1412 BIO_printf(sdb->out, "%d", DH_bits(dh));
1413 break;
1414 }
1415 #endif
1416 case SSL_SECOP_OTHER_CERT:
1417 {
1418 if (cert_md) {
1419 int sig_nid = X509_get_signature_nid(other);
1420 BIO_puts(sdb->out, OBJ_nid2sn(sig_nid));
1421 } else {
1422 EVP_PKEY *pkey = X509_get0_pubkey(other);
1423 const char *algname = "";
1424 EVP_PKEY_asn1_get0_info(NULL, NULL, NULL, NULL,
1425 &algname, EVP_PKEY_get0_asn1(pkey));
1426 BIO_printf(sdb->out, "%s, bits=%d",
1427 algname, EVP_PKEY_bits(pkey));
1428 }
1429 break;
1430 }
1431 case SSL_SECOP_OTHER_SIGALG:
1432 {
1433 const unsigned char *salg = other;
1434 const char *sname = NULL;
1435 int raw_sig_code = (salg[0] << 8) + salg[1]; /* always big endian (msb, lsb) */
1436 /* raw_sig_code: signature_scheme from tls1.3, or signature_and_hash from tls1.2 */
1437
1438 if (nm != NULL)
1439 BIO_printf(sdb->out, "%s", nm);
1440 else
1441 BIO_printf(sdb->out, "s_cb.c:security_callback_debug op=0x%x", op);
1442
1443 sname = lookup(raw_sig_code, signature_tls13_scheme_list, NULL);
1444 if (sname != NULL) {
1445 BIO_printf(sdb->out, " scheme=%s", sname);
1446 } else {
1447 int alg_code = salg[1];
1448 int hash_code = salg[0];
1449 const char *alg_str = lookup(alg_code, signature_tls12_alg_list, NULL);
1450 const char *hash_str = lookup(hash_code, signature_tls12_hash_list, NULL);
1451
1452 if (alg_str != NULL && hash_str != NULL)
1453 BIO_printf(sdb->out, " digest=%s, algorithm=%s", hash_str, alg_str);
1454 else
1455 BIO_printf(sdb->out, " scheme=unknown(0x%04x)", raw_sig_code);
1456 }
1457 }
1458
1459 }
1460
1461 if (show_bits)
1462 BIO_printf(sdb->out, ", security bits=%d", bits);
1463 BIO_printf(sdb->out, ": %s\n", rv ? "yes" : "no");
1464 return rv;
1465 }
1466
ssl_ctx_security_debug(SSL_CTX * ctx,int verbose)1467 void ssl_ctx_security_debug(SSL_CTX *ctx, int verbose)
1468 {
1469 static security_debug_ex sdb;
1470
1471 sdb.out = bio_err;
1472 sdb.verbose = verbose;
1473 sdb.old_cb = SSL_CTX_get_security_callback(ctx);
1474 SSL_CTX_set_security_callback(ctx, security_callback_debug);
1475 SSL_CTX_set0_security_ex_data(ctx, &sdb);
1476 }
1477
keylog_callback(const SSL * ssl,const char * line)1478 static void keylog_callback(const SSL *ssl, const char *line)
1479 {
1480 if (bio_keylog == NULL) {
1481 BIO_printf(bio_err, "Keylog callback is invoked without valid file!\n");
1482 return;
1483 }
1484
1485 /*
1486 * There might be concurrent writers to the keylog file, so we must ensure
1487 * that the given line is written at once.
1488 */
1489 BIO_printf(bio_keylog, "%s\n", line);
1490 (void)BIO_flush(bio_keylog);
1491 }
1492
set_keylog_file(SSL_CTX * ctx,const char * keylog_file)1493 int set_keylog_file(SSL_CTX *ctx, const char *keylog_file)
1494 {
1495 /* Close any open files */
1496 BIO_free_all(bio_keylog);
1497 bio_keylog = NULL;
1498
1499 if (ctx == NULL || keylog_file == NULL) {
1500 /* Keylogging is disabled, OK. */
1501 return 0;
1502 }
1503
1504 /*
1505 * Append rather than write in order to allow concurrent modification.
1506 * Furthermore, this preserves existing keylog files which is useful when
1507 * the tool is run multiple times.
1508 */
1509 bio_keylog = BIO_new_file(keylog_file, "a");
1510 if (bio_keylog == NULL) {
1511 BIO_printf(bio_err, "Error writing keylog file %s\n", keylog_file);
1512 return 1;
1513 }
1514
1515 /* Write a header for seekable, empty files (this excludes pipes). */
1516 if (BIO_tell(bio_keylog) == 0) {
1517 BIO_puts(bio_keylog,
1518 "# SSL/TLS secrets log file, generated by OpenSSL\n");
1519 (void)BIO_flush(bio_keylog);
1520 }
1521 SSL_CTX_set_keylog_callback(ctx, keylog_callback);
1522 return 0;
1523 }
1524
print_ca_names(BIO * bio,SSL * s)1525 void print_ca_names(BIO *bio, SSL *s)
1526 {
1527 const char *cs = SSL_is_server(s) ? "server" : "client";
1528 const STACK_OF(X509_NAME) *sk = SSL_get0_peer_CA_list(s);
1529 int i;
1530
1531 if (sk == NULL || sk_X509_NAME_num(sk) == 0) {
1532 if (!SSL_is_server(s))
1533 BIO_printf(bio, "---\nNo %s certificate CA names sent\n", cs);
1534 return;
1535 }
1536
1537 BIO_printf(bio, "---\nAcceptable %s certificate CA names\n",cs);
1538 for (i = 0; i < sk_X509_NAME_num(sk); i++) {
1539 X509_NAME_print_ex(bio, sk_X509_NAME_value(sk, i), 0, get_nameopt());
1540 BIO_write(bio, "\n", 1);
1541 }
1542 }
1543