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source: vbox/trunk/src/libs/openssl-3.0.7/ssl/ssl_conf.c@ 97371

Last change on this file since 97371 was 95219, checked in by vboxsync, 3 years ago

libs/openssl: Switched to v3.0.3, bugref:10128
File size: 33.4 KB
Line 
1/*
2 * Copyright 2012-2022 The OpenSSL Project Authors. All Rights Reserved.
3 *
4 * Licensed under the Apache License 2.0 (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#include <stdio.h>
11#include "ssl_local.h"
12#include <openssl/conf.h>
13#include <openssl/objects.h>
14#include <openssl/decoder.h>
15#include <openssl/core_dispatch.h>
16#include "internal/nelem.h"
17
18/*
19 * structure holding name tables. This is used for permitted elements in lists
20 * such as TLSv1.
21 */
22
23typedef struct {
24 const char *name;
25 int namelen;
26 unsigned int name_flags;
27 uint64_t option_value;
28} ssl_flag_tbl;
29
30/* Switch table: use for single command line switches like no_tls2 */
31typedef struct {
32 uint64_t option_value;
33 unsigned int name_flags;
34} ssl_switch_tbl;
35
36/* Sense of name is inverted e.g. "TLSv1" will clear SSL_OP_NO_TLSv1 */
37#define SSL_TFLAG_INV 0x1
38/* Mask for type of flag referred to */
39#define SSL_TFLAG_TYPE_MASK 0xf00
40/* Flag is for options */
41#define SSL_TFLAG_OPTION 0x000
42/* Flag is for cert_flags */
43#define SSL_TFLAG_CERT 0x100
44/* Flag is for verify mode */
45#define SSL_TFLAG_VFY 0x200
46/* Option can only be used for clients */
47#define SSL_TFLAG_CLIENT SSL_CONF_FLAG_CLIENT
48/* Option can only be used for servers */
49#define SSL_TFLAG_SERVER SSL_CONF_FLAG_SERVER
50#define SSL_TFLAG_BOTH (SSL_TFLAG_CLIENT|SSL_TFLAG_SERVER)
51
52#define SSL_FLAG_TBL(str, flag) \
53 {str, (int)(sizeof(str) - 1), SSL_TFLAG_BOTH, flag}
54#define SSL_FLAG_TBL_SRV(str, flag) \
55 {str, (int)(sizeof(str) - 1), SSL_TFLAG_SERVER, flag}
56#define SSL_FLAG_TBL_CLI(str, flag) \
57 {str, (int)(sizeof(str) - 1), SSL_TFLAG_CLIENT, flag}
58#define SSL_FLAG_TBL_INV(str, flag) \
59 {str, (int)(sizeof(str) - 1), SSL_TFLAG_INV|SSL_TFLAG_BOTH, flag}
60#define SSL_FLAG_TBL_SRV_INV(str, flag) \
61 {str, (int)(sizeof(str) - 1), SSL_TFLAG_INV|SSL_TFLAG_SERVER, flag}
62#define SSL_FLAG_TBL_CERT(str, flag) \
63 {str, (int)(sizeof(str) - 1), SSL_TFLAG_CERT|SSL_TFLAG_BOTH, flag}
64
65#define SSL_FLAG_VFY_CLI(str, flag) \
66 {str, (int)(sizeof(str) - 1), SSL_TFLAG_VFY | SSL_TFLAG_CLIENT, flag}
67#define SSL_FLAG_VFY_SRV(str, flag) \
68 {str, (int)(sizeof(str) - 1), SSL_TFLAG_VFY | SSL_TFLAG_SERVER, flag}
69
70/*
71 * Opaque structure containing SSL configuration context.
72 */
73
74struct ssl_conf_ctx_st {
75 /*
76 * Various flags indicating (among other things) which options we will
77 * recognise.
78 */
79 unsigned int flags;
80 /* Prefix and length of commands */
81 char *prefix;
82 size_t prefixlen;
83 /* SSL_CTX or SSL structure to perform operations on */
84 SSL_CTX *ctx;
85 SSL *ssl;
86 /* Pointer to SSL or SSL_CTX options field or NULL if none */
87 uint64_t *poptions;
88 /* Certificate filenames for each type */
89 char *cert_filename[SSL_PKEY_NUM];
90 /* Pointer to SSL or SSL_CTX cert_flags or NULL if none */
91 uint32_t *pcert_flags;
92 /* Pointer to SSL or SSL_CTX verify_mode or NULL if none */
93 uint32_t *pvfy_flags;
94 /* Pointer to SSL or SSL_CTX min_version field or NULL if none */
95 int *min_version;
96 /* Pointer to SSL or SSL_CTX max_version field or NULL if none */
97 int *max_version;
98 /* Current flag table being worked on */
99 const ssl_flag_tbl *tbl;
100 /* Size of table */
101 size_t ntbl;
102 /* Client CA names */
103 STACK_OF(X509_NAME) *canames;
104};
105
106static void ssl_set_option(SSL_CONF_CTX *cctx, unsigned int name_flags,
107 uint64_t option_value, int onoff)
108{
109 uint32_t *pflags;
110
111 if (cctx->poptions == NULL)
112 return;
113 if (name_flags & SSL_TFLAG_INV)
114 onoff ^= 1;
115 switch (name_flags & SSL_TFLAG_TYPE_MASK) {
116
117 case SSL_TFLAG_CERT:
118 pflags = cctx->pcert_flags;
119 break;
120
121 case SSL_TFLAG_VFY:
122 pflags = cctx->pvfy_flags;
123 break;
124
125 case SSL_TFLAG_OPTION:
126 if (onoff)
127 *cctx->poptions |= option_value;
128 else
129 *cctx->poptions &= ~option_value;
130 return;
131
132 default:
133 return;
134
135 }
136 if (onoff)
137 *pflags |= option_value;
138 else
139 *pflags &= ~option_value;
140}
141
142static int ssl_match_option(SSL_CONF_CTX *cctx, const ssl_flag_tbl *tbl,
143 const char *name, int namelen, int onoff)
144{
145 /* If name not relevant for context skip */
146 if (!(cctx->flags & tbl->name_flags & SSL_TFLAG_BOTH))
147 return 0;
148 if (namelen == -1) {
149 if (strcmp(tbl->name, name))
150 return 0;
151 } else if (tbl->namelen != namelen
152 || OPENSSL_strncasecmp(tbl->name, name, namelen))
153 return 0;
154 ssl_set_option(cctx, tbl->name_flags, tbl->option_value, onoff);
155 return 1;
156}
157
158static int ssl_set_option_list(const char *elem, int len, void *usr)
159{
160 SSL_CONF_CTX *cctx = usr;
161 size_t i;
162 const ssl_flag_tbl *tbl;
163 int onoff = 1;
164 /*
165 * len == -1 indicates not being called in list context, just for single
166 * command line switches, so don't allow +, -.
167 */
168 if (elem == NULL)
169 return 0;
170 if (len != -1) {
171 if (*elem == '+') {
172 elem++;
173 len--;
174 onoff = 1;
175 } else if (*elem == '-') {
176 elem++;
177 len--;
178 onoff = 0;
179 }
180 }
181 for (i = 0, tbl = cctx->tbl; i < cctx->ntbl; i++, tbl++) {
182 if (ssl_match_option(cctx, tbl, elem, len, onoff))
183 return 1;
184 }
185 return 0;
186}
187
188/* Set supported signature algorithms */
189static int cmd_SignatureAlgorithms(SSL_CONF_CTX *cctx, const char *value)
190{
191 int rv;
192 if (cctx->ssl)
193 rv = SSL_set1_sigalgs_list(cctx->ssl, value);
194 /* NB: ctx == NULL performs syntax checking only */
195 else
196 rv = SSL_CTX_set1_sigalgs_list(cctx->ctx, value);
197 return rv > 0;
198}
199
200/* Set supported client signature algorithms */
201static int cmd_ClientSignatureAlgorithms(SSL_CONF_CTX *cctx, const char *value)
202{
203 int rv;
204 if (cctx->ssl)
205 rv = SSL_set1_client_sigalgs_list(cctx->ssl, value);
206 /* NB: ctx == NULL performs syntax checking only */
207 else
208 rv = SSL_CTX_set1_client_sigalgs_list(cctx->ctx, value);
209 return rv > 0;
210}
211
212static int cmd_Groups(SSL_CONF_CTX *cctx, const char *value)
213{
214 int rv;
215 if (cctx->ssl)
216 rv = SSL_set1_groups_list(cctx->ssl, value);
217 /* NB: ctx == NULL performs syntax checking only */
218 else
219 rv = SSL_CTX_set1_groups_list(cctx->ctx, value);
220 return rv > 0;
221}
222
223/* This is the old name for cmd_Groups - retained for backwards compatibility */
224static int cmd_Curves(SSL_CONF_CTX *cctx, const char *value)
225{
226 return cmd_Groups(cctx, value);
227}
228
229/* ECDH temporary parameters */
230static int cmd_ECDHParameters(SSL_CONF_CTX *cctx, const char *value)
231{
232 int rv = 1;
233
234 /* Ignore values supported by 1.0.2 for the automatic selection */
235 if ((cctx->flags & SSL_CONF_FLAG_FILE)
236 && (OPENSSL_strcasecmp(value, "+automatic") == 0
237 || OPENSSL_strcasecmp(value, "automatic") == 0))
238 return 1;
239 if ((cctx->flags & SSL_CONF_FLAG_CMDLINE) &&
240 strcmp(value, "auto") == 0)
241 return 1;
242
243 /* ECDHParameters accepts a single group name */
244 if (strstr(value, ":") != NULL)
245 return 0;
246
247 if (cctx->ctx)
248 rv = SSL_CTX_set1_groups_list(cctx->ctx, value);
249 else if (cctx->ssl)
250 rv = SSL_set1_groups_list(cctx->ssl, value);
251
252 return rv > 0;
253}
254
255static int cmd_CipherString(SSL_CONF_CTX *cctx, const char *value)
256{
257 int rv = 1;
258
259 if (cctx->ctx)
260 rv = SSL_CTX_set_cipher_list(cctx->ctx, value);
261 if (cctx->ssl)
262 rv = SSL_set_cipher_list(cctx->ssl, value);
263 return rv > 0;
264}
265
266static int cmd_Ciphersuites(SSL_CONF_CTX *cctx, const char *value)
267{
268 int rv = 1;
269
270 if (cctx->ctx)
271 rv = SSL_CTX_set_ciphersuites(cctx->ctx, value);
272 if (cctx->ssl)
273 rv = SSL_set_ciphersuites(cctx->ssl, value);
274 return rv > 0;
275}
276
277static int cmd_Protocol(SSL_CONF_CTX *cctx, const char *value)
278{
279 static const ssl_flag_tbl ssl_protocol_list[] = {
280 SSL_FLAG_TBL_INV("ALL", SSL_OP_NO_SSL_MASK),
281 SSL_FLAG_TBL_INV("SSLv2", SSL_OP_NO_SSLv2),
282 SSL_FLAG_TBL_INV("SSLv3", SSL_OP_NO_SSLv3),
283 SSL_FLAG_TBL_INV("TLSv1", SSL_OP_NO_TLSv1),
284 SSL_FLAG_TBL_INV("TLSv1.1", SSL_OP_NO_TLSv1_1),
285 SSL_FLAG_TBL_INV("TLSv1.2", SSL_OP_NO_TLSv1_2),
286 SSL_FLAG_TBL_INV("TLSv1.3", SSL_OP_NO_TLSv1_3),
287 SSL_FLAG_TBL_INV("DTLSv1", SSL_OP_NO_DTLSv1),
288 SSL_FLAG_TBL_INV("DTLSv1.2", SSL_OP_NO_DTLSv1_2)
289 };
290 cctx->tbl = ssl_protocol_list;
291 cctx->ntbl = OSSL_NELEM(ssl_protocol_list);
292 return CONF_parse_list(value, ',', 1, ssl_set_option_list, cctx);
293}
294
295/*
296 * protocol_from_string - converts a protocol version string to a number
297 *
298 * Returns -1 on failure or the version on success
299 */
300static int protocol_from_string(const char *value)
301{
302 struct protocol_versions {
303 const char *name;
304 int version;
305 };
306 /*
307 * Note: To avoid breaking previously valid configurations, we must retain
308 * legacy entries in this table even if the underlying protocol is no
309 * longer supported. This also means that the constants SSL3_VERSION, ...
310 * need to be retained indefinitely. This table can only grow, never
311 * shrink.
312 */
313 static const struct protocol_versions versions[] = {
314 {"None", 0},
315 {"SSLv3", SSL3_VERSION},
316 {"TLSv1", TLS1_VERSION},
317 {"TLSv1.1", TLS1_1_VERSION},
318 {"TLSv1.2", TLS1_2_VERSION},
319 {"TLSv1.3", TLS1_3_VERSION},
320 {"DTLSv1", DTLS1_VERSION},
321 {"DTLSv1.2", DTLS1_2_VERSION}
322 };
323 size_t i;
324 size_t n = OSSL_NELEM(versions);
325
326 for (i = 0; i < n; i++)
327 if (strcmp(versions[i].name, value) == 0)
328 return versions[i].version;
329 return -1;
330}
331
332static int min_max_proto(SSL_CONF_CTX *cctx, const char *value, int *bound)
333{
334 int method_version;
335 int new_version;
336
337 if (cctx->ctx != NULL)
338 method_version = cctx->ctx->method->version;
339 else if (cctx->ssl != NULL)
340 method_version = cctx->ssl->ctx->method->version;
341 else
342 return 0;
343 if ((new_version = protocol_from_string(value)) < 0)
344 return 0;
345 return ssl_set_version_bound(method_version, new_version, bound);
346}
347
348/*
349 * cmd_MinProtocol - Set min protocol version
350 * @cctx: config structure to save settings in
351 * @value: The min protocol version in string form
352 *
353 * Returns 1 on success and 0 on failure.
354 */
355static int cmd_MinProtocol(SSL_CONF_CTX *cctx, const char *value)
356{
357 return min_max_proto(cctx, value, cctx->min_version);
358}
359
360/*
361 * cmd_MaxProtocol - Set max protocol version
362 * @cctx: config structure to save settings in
363 * @value: The max protocol version in string form
364 *
365 * Returns 1 on success and 0 on failure.
366 */
367static int cmd_MaxProtocol(SSL_CONF_CTX *cctx, const char *value)
368{
369 return min_max_proto(cctx, value, cctx->max_version);
370}
371
372static int cmd_Options(SSL_CONF_CTX *cctx, const char *value)
373{
374 static const ssl_flag_tbl ssl_option_list[] = {
375 SSL_FLAG_TBL_INV("SessionTicket", SSL_OP_NO_TICKET),
376 SSL_FLAG_TBL_INV("EmptyFragments",
377 SSL_OP_DONT_INSERT_EMPTY_FRAGMENTS),
378 SSL_FLAG_TBL("Bugs", SSL_OP_ALL),
379 SSL_FLAG_TBL_INV("Compression", SSL_OP_NO_COMPRESSION),
380 SSL_FLAG_TBL_SRV("ServerPreference", SSL_OP_CIPHER_SERVER_PREFERENCE),
381 SSL_FLAG_TBL_SRV("NoResumptionOnRenegotiation",
382 SSL_OP_NO_SESSION_RESUMPTION_ON_RENEGOTIATION),
383 SSL_FLAG_TBL_SRV("DHSingle", SSL_OP_SINGLE_DH_USE),
384 SSL_FLAG_TBL_SRV("ECDHSingle", SSL_OP_SINGLE_ECDH_USE),
385 SSL_FLAG_TBL("UnsafeLegacyRenegotiation",
386 SSL_OP_ALLOW_UNSAFE_LEGACY_RENEGOTIATION),
387 SSL_FLAG_TBL("ClientRenegotiation",
388 SSL_OP_ALLOW_CLIENT_RENEGOTIATION),
389 SSL_FLAG_TBL_INV("EncryptThenMac", SSL_OP_NO_ENCRYPT_THEN_MAC),
390 SSL_FLAG_TBL("NoRenegotiation", SSL_OP_NO_RENEGOTIATION),
391 SSL_FLAG_TBL("AllowNoDHEKEX", SSL_OP_ALLOW_NO_DHE_KEX),
392 SSL_FLAG_TBL("PrioritizeChaCha", SSL_OP_PRIORITIZE_CHACHA),
393 SSL_FLAG_TBL("MiddleboxCompat", SSL_OP_ENABLE_MIDDLEBOX_COMPAT),
394 SSL_FLAG_TBL_INV("AntiReplay", SSL_OP_NO_ANTI_REPLAY),
395 SSL_FLAG_TBL_INV("ExtendedMasterSecret", SSL_OP_NO_EXTENDED_MASTER_SECRET),
396 SSL_FLAG_TBL_INV("CANames", SSL_OP_DISABLE_TLSEXT_CA_NAMES),
397 SSL_FLAG_TBL("KTLS", SSL_OP_ENABLE_KTLS)
398 };
399 if (value == NULL)
400 return -3;
401 cctx->tbl = ssl_option_list;
402 cctx->ntbl = OSSL_NELEM(ssl_option_list);
403 return CONF_parse_list(value, ',', 1, ssl_set_option_list, cctx);
404}
405
406static int cmd_VerifyMode(SSL_CONF_CTX *cctx, const char *value)
407{
408 static const ssl_flag_tbl ssl_vfy_list[] = {
409 SSL_FLAG_VFY_CLI("Peer", SSL_VERIFY_PEER),
410 SSL_FLAG_VFY_SRV("Request", SSL_VERIFY_PEER),
411 SSL_FLAG_VFY_SRV("Require",
412 SSL_VERIFY_PEER | SSL_VERIFY_FAIL_IF_NO_PEER_CERT),
413 SSL_FLAG_VFY_SRV("Once", SSL_VERIFY_PEER | SSL_VERIFY_CLIENT_ONCE),
414 SSL_FLAG_VFY_SRV("RequestPostHandshake",
415 SSL_VERIFY_PEER | SSL_VERIFY_POST_HANDSHAKE),
416 SSL_FLAG_VFY_SRV("RequirePostHandshake",
417 SSL_VERIFY_PEER | SSL_VERIFY_POST_HANDSHAKE |
418 SSL_VERIFY_FAIL_IF_NO_PEER_CERT),
419 };
420 if (value == NULL)
421 return -3;
422 cctx->tbl = ssl_vfy_list;
423 cctx->ntbl = OSSL_NELEM(ssl_vfy_list);
424 return CONF_parse_list(value, ',', 1, ssl_set_option_list, cctx);
425}
426
427static int cmd_Certificate(SSL_CONF_CTX *cctx, const char *value)
428{
429 int rv = 1;
430 CERT *c = NULL;
431 if (cctx->ctx) {
432 rv = SSL_CTX_use_certificate_chain_file(cctx->ctx, value);
433 c = cctx->ctx->cert;
434 }
435 if (cctx->ssl) {
436 rv = SSL_use_certificate_chain_file(cctx->ssl, value);
437 c = cctx->ssl->cert;
438 }
439 if (rv > 0 && c && cctx->flags & SSL_CONF_FLAG_REQUIRE_PRIVATE) {
440 char **pfilename = &cctx->cert_filename[c->key - c->pkeys];
441 OPENSSL_free(*pfilename);
442 *pfilename = OPENSSL_strdup(value);
443 if (*pfilename == NULL)
444 rv = 0;
445 }
446
447 return rv > 0;
448}
449
450static int cmd_PrivateKey(SSL_CONF_CTX *cctx, const char *value)
451{
452 int rv = 1;
453 if (!(cctx->flags & SSL_CONF_FLAG_CERTIFICATE))
454 return -2;
455 if (cctx->ctx)
456 rv = SSL_CTX_use_PrivateKey_file(cctx->ctx, value, SSL_FILETYPE_PEM);
457 if (cctx->ssl)
458 rv = SSL_use_PrivateKey_file(cctx->ssl, value, SSL_FILETYPE_PEM);
459 return rv > 0;
460}
461
462static int cmd_ServerInfoFile(SSL_CONF_CTX *cctx, const char *value)
463{
464 int rv = 1;
465 if (cctx->ctx)
466 rv = SSL_CTX_use_serverinfo_file(cctx->ctx, value);
467 return rv > 0;
468}
469
470static int do_store(SSL_CONF_CTX *cctx,
471 const char *CAfile, const char *CApath, const char *CAstore,
472 int verify_store)
473{
474 CERT *cert;
475 X509_STORE **st;
476 SSL_CTX *ctx;
477 OSSL_LIB_CTX *libctx = NULL;
478 const char *propq = NULL;
479
480 if (cctx->ctx != NULL) {
481 cert = cctx->ctx->cert;
482 ctx = cctx->ctx;
483 } else if (cctx->ssl != NULL) {
484 cert = cctx->ssl->cert;
485 ctx = cctx->ssl->ctx;
486 } else {
487 return 1;
488 }
489 if (ctx != NULL) {
490 libctx = ctx->libctx;
491 propq = ctx->propq;
492 }
493 st = verify_store ? &cert->verify_store : &cert->chain_store;
494 if (*st == NULL) {
495 *st = X509_STORE_new();
496 if (*st == NULL)
497 return 0;
498 }
499
500 if (CAfile != NULL && !X509_STORE_load_file_ex(*st, CAfile, libctx, propq))
501 return 0;
502 if (CApath != NULL && !X509_STORE_load_path(*st, CApath))
503 return 0;
504 if (CAstore != NULL && !X509_STORE_load_store_ex(*st, CAstore, libctx,
505 propq))
506 return 0;
507 return 1;
508}
509
510static int cmd_ChainCAPath(SSL_CONF_CTX *cctx, const char *value)
511{
512 return do_store(cctx, NULL, value, NULL, 0);
513}
514
515static int cmd_ChainCAFile(SSL_CONF_CTX *cctx, const char *value)
516{
517 return do_store(cctx, value, NULL, NULL, 0);
518}
519
520static int cmd_ChainCAStore(SSL_CONF_CTX *cctx, const char *value)
521{
522 return do_store(cctx, NULL, NULL, value, 0);
523}
524
525static int cmd_VerifyCAPath(SSL_CONF_CTX *cctx, const char *value)
526{
527 return do_store(cctx, NULL, value, NULL, 1);
528}
529
530static int cmd_VerifyCAFile(SSL_CONF_CTX *cctx, const char *value)
531{
532 return do_store(cctx, value, NULL, NULL, 1);
533}
534
535static int cmd_VerifyCAStore(SSL_CONF_CTX *cctx, const char *value)
536{
537 return do_store(cctx, NULL, NULL, value, 1);
538}
539
540static int cmd_RequestCAFile(SSL_CONF_CTX *cctx, const char *value)
541{
542 if (cctx->canames == NULL)
543 cctx->canames = sk_X509_NAME_new_null();
544 if (cctx->canames == NULL)
545 return 0;
546 return SSL_add_file_cert_subjects_to_stack(cctx->canames, value);
547}
548
549static int cmd_ClientCAFile(SSL_CONF_CTX *cctx, const char *value)
550{
551 return cmd_RequestCAFile(cctx, value);
552}
553
554static int cmd_RequestCAPath(SSL_CONF_CTX *cctx, const char *value)
555{
556 if (cctx->canames == NULL)
557 cctx->canames = sk_X509_NAME_new_null();
558 if (cctx->canames == NULL)
559 return 0;
560 return SSL_add_dir_cert_subjects_to_stack(cctx->canames, value);
561}
562
563static int cmd_ClientCAPath(SSL_CONF_CTX *cctx, const char *value)
564{
565 return cmd_RequestCAPath(cctx, value);
566}
567
568static int cmd_RequestCAStore(SSL_CONF_CTX *cctx, const char *value)
569{
570 if (cctx->canames == NULL)
571 cctx->canames = sk_X509_NAME_new_null();
572 if (cctx->canames == NULL)
573 return 0;
574 return SSL_add_store_cert_subjects_to_stack(cctx->canames, value);
575}
576
577static int cmd_ClientCAStore(SSL_CONF_CTX *cctx, const char *value)
578{
579 return cmd_RequestCAStore(cctx, value);
580}
581
582static int cmd_DHParameters(SSL_CONF_CTX *cctx, const char *value)
583{
584 int rv = 0;
585 EVP_PKEY *dhpkey = NULL;
586 BIO *in = NULL;
587 SSL_CTX *sslctx = (cctx->ssl != NULL) ? cctx->ssl->ctx : cctx->ctx;
588 OSSL_DECODER_CTX *decoderctx = NULL;
589
590 if (cctx->ctx != NULL || cctx->ssl != NULL) {
591 in = BIO_new(BIO_s_file());
592 if (in == NULL)
593 goto end;
594 if (BIO_read_filename(in, value) <= 0)
595 goto end;
596
597 decoderctx
598 = OSSL_DECODER_CTX_new_for_pkey(&dhpkey, "PEM", NULL, "DH",
599 OSSL_KEYMGMT_SELECT_DOMAIN_PARAMETERS,
600 sslctx->libctx, sslctx->propq);
601 if (decoderctx == NULL)
602 goto end;
603 ERR_set_mark();
604 while (!OSSL_DECODER_from_bio(decoderctx, in)
605 && dhpkey == NULL
606 && !BIO_eof(in));
607 OSSL_DECODER_CTX_free(decoderctx);
608
609 if (dhpkey == NULL) {
610 ERR_clear_last_mark();
611 goto end;
612 }
613 ERR_pop_to_mark();
614 } else {
615 return 1;
616 }
617
618 if (cctx->ctx != NULL) {
619 if ((rv = SSL_CTX_set0_tmp_dh_pkey(cctx->ctx, dhpkey)) > 0)
620 dhpkey = NULL;
621 }
622 if (cctx->ssl != NULL) {
623 if ((rv = SSL_set0_tmp_dh_pkey(cctx->ssl, dhpkey)) > 0)
624 dhpkey = NULL;
625 }
626 end:
627 EVP_PKEY_free(dhpkey);
628 BIO_free(in);
629 return rv > 0;
630}
631
632static int cmd_RecordPadding(SSL_CONF_CTX *cctx, const char *value)
633{
634 int rv = 0;
635 int block_size = atoi(value);
636
637 /*
638 * All we care about is a non-negative value,
639 * the setters check the range
640 */
641 if (block_size >= 0) {
642 if (cctx->ctx)
643 rv = SSL_CTX_set_block_padding(cctx->ctx, block_size);
644 if (cctx->ssl)
645 rv = SSL_set_block_padding(cctx->ssl, block_size);
646 }
647 return rv;
648}
649
650
651static int cmd_NumTickets(SSL_CONF_CTX *cctx, const char *value)
652{
653 int rv = 0;
654 int num_tickets = atoi(value);
655
656 if (num_tickets >= 0) {
657 if (cctx->ctx)
658 rv = SSL_CTX_set_num_tickets(cctx->ctx, num_tickets);
659 if (cctx->ssl)
660 rv = SSL_set_num_tickets(cctx->ssl, num_tickets);
661 }
662 return rv;
663}
664
665typedef struct {
666 int (*cmd) (SSL_CONF_CTX *cctx, const char *value);
667 const char *str_file;
668 const char *str_cmdline;
669 unsigned short flags;
670 unsigned short value_type;
671} ssl_conf_cmd_tbl;
672
673/* Table of supported parameters */
674
675#define SSL_CONF_CMD(name, cmdopt, flags, type) \
676 {cmd_##name, #name, cmdopt, flags, type}
677
678#define SSL_CONF_CMD_STRING(name, cmdopt, flags) \
679 SSL_CONF_CMD(name, cmdopt, flags, SSL_CONF_TYPE_STRING)
680
681#define SSL_CONF_CMD_SWITCH(name, flags) \
682 {0, NULL, name, flags, SSL_CONF_TYPE_NONE}
683
684/* See apps/include/opt.h if you change this table. */
685/* The SSL_CONF_CMD_SWITCH should be the same order as ssl_cmd_switches */
686static const ssl_conf_cmd_tbl ssl_conf_cmds[] = {
687 SSL_CONF_CMD_SWITCH("no_ssl3", 0),
688 SSL_CONF_CMD_SWITCH("no_tls1", 0),
689 SSL_CONF_CMD_SWITCH("no_tls1_1", 0),
690 SSL_CONF_CMD_SWITCH("no_tls1_2", 0),
691 SSL_CONF_CMD_SWITCH("no_tls1_3", 0),
692 SSL_CONF_CMD_SWITCH("bugs", 0),
693 SSL_CONF_CMD_SWITCH("no_comp", 0),
694 SSL_CONF_CMD_SWITCH("comp", 0),
695 SSL_CONF_CMD_SWITCH("ecdh_single", SSL_CONF_FLAG_SERVER),
696 SSL_CONF_CMD_SWITCH("no_ticket", 0),
697 SSL_CONF_CMD_SWITCH("serverpref", SSL_CONF_FLAG_SERVER),
698 SSL_CONF_CMD_SWITCH("legacy_renegotiation", 0),
699 SSL_CONF_CMD_SWITCH("client_renegotiation", SSL_CONF_FLAG_SERVER),
700 SSL_CONF_CMD_SWITCH("legacy_server_connect", SSL_CONF_FLAG_CLIENT),
701 SSL_CONF_CMD_SWITCH("no_renegotiation", 0),
702 SSL_CONF_CMD_SWITCH("no_resumption_on_reneg", SSL_CONF_FLAG_SERVER),
703 SSL_CONF_CMD_SWITCH("no_legacy_server_connect", SSL_CONF_FLAG_SERVER),
704 SSL_CONF_CMD_SWITCH("allow_no_dhe_kex", 0),
705 SSL_CONF_CMD_SWITCH("prioritize_chacha", SSL_CONF_FLAG_SERVER),
706 SSL_CONF_CMD_SWITCH("strict", 0),
707 SSL_CONF_CMD_SWITCH("no_middlebox", 0),
708 SSL_CONF_CMD_SWITCH("anti_replay", SSL_CONF_FLAG_SERVER),
709 SSL_CONF_CMD_SWITCH("no_anti_replay", SSL_CONF_FLAG_SERVER),
710 SSL_CONF_CMD_SWITCH("no_etm", 0),
711 SSL_CONF_CMD_STRING(SignatureAlgorithms, "sigalgs", 0),
712 SSL_CONF_CMD_STRING(ClientSignatureAlgorithms, "client_sigalgs", 0),
713 SSL_CONF_CMD_STRING(Curves, "curves", 0),
714 SSL_CONF_CMD_STRING(Groups, "groups", 0),
715 SSL_CONF_CMD_STRING(ECDHParameters, "named_curve", SSL_CONF_FLAG_SERVER),
716 SSL_CONF_CMD_STRING(CipherString, "cipher", 0),
717 SSL_CONF_CMD_STRING(Ciphersuites, "ciphersuites", 0),
718 SSL_CONF_CMD_STRING(Protocol, NULL, 0),
719 SSL_CONF_CMD_STRING(MinProtocol, "min_protocol", 0),
720 SSL_CONF_CMD_STRING(MaxProtocol, "max_protocol", 0),
721 SSL_CONF_CMD_STRING(Options, NULL, 0),
722 SSL_CONF_CMD_STRING(VerifyMode, NULL, 0),
723 SSL_CONF_CMD(Certificate, "cert", SSL_CONF_FLAG_CERTIFICATE,
724 SSL_CONF_TYPE_FILE),
725 SSL_CONF_CMD(PrivateKey, "key", SSL_CONF_FLAG_CERTIFICATE,
726 SSL_CONF_TYPE_FILE),
727 SSL_CONF_CMD(ServerInfoFile, NULL,
728 SSL_CONF_FLAG_SERVER | SSL_CONF_FLAG_CERTIFICATE,
729 SSL_CONF_TYPE_FILE),
730 SSL_CONF_CMD(ChainCAPath, "chainCApath", SSL_CONF_FLAG_CERTIFICATE,
731 SSL_CONF_TYPE_DIR),
732 SSL_CONF_CMD(ChainCAFile, "chainCAfile", SSL_CONF_FLAG_CERTIFICATE,
733 SSL_CONF_TYPE_FILE),
734 SSL_CONF_CMD(ChainCAStore, "chainCAstore", SSL_CONF_FLAG_CERTIFICATE,
735 SSL_CONF_TYPE_STORE),
736 SSL_CONF_CMD(VerifyCAPath, "verifyCApath", SSL_CONF_FLAG_CERTIFICATE,
737 SSL_CONF_TYPE_DIR),
738 SSL_CONF_CMD(VerifyCAFile, "verifyCAfile", SSL_CONF_FLAG_CERTIFICATE,
739 SSL_CONF_TYPE_FILE),
740 SSL_CONF_CMD(VerifyCAStore, "verifyCAstore", SSL_CONF_FLAG_CERTIFICATE,
741 SSL_CONF_TYPE_STORE),
742 SSL_CONF_CMD(RequestCAFile, "requestCAFile", SSL_CONF_FLAG_CERTIFICATE,
743 SSL_CONF_TYPE_FILE),
744 SSL_CONF_CMD(ClientCAFile, NULL,
745 SSL_CONF_FLAG_SERVER | SSL_CONF_FLAG_CERTIFICATE,
746 SSL_CONF_TYPE_FILE),
747 SSL_CONF_CMD(RequestCAPath, NULL, SSL_CONF_FLAG_CERTIFICATE,
748 SSL_CONF_TYPE_DIR),
749 SSL_CONF_CMD(ClientCAPath, NULL,
750 SSL_CONF_FLAG_SERVER | SSL_CONF_FLAG_CERTIFICATE,
751 SSL_CONF_TYPE_DIR),
752 SSL_CONF_CMD(RequestCAStore, "requestCAStore", SSL_CONF_FLAG_CERTIFICATE,
753 SSL_CONF_TYPE_STORE),
754 SSL_CONF_CMD(ClientCAStore, NULL,
755 SSL_CONF_FLAG_SERVER | SSL_CONF_FLAG_CERTIFICATE,
756 SSL_CONF_TYPE_STORE),
757 SSL_CONF_CMD(DHParameters, "dhparam",
758 SSL_CONF_FLAG_SERVER | SSL_CONF_FLAG_CERTIFICATE,
759 SSL_CONF_TYPE_FILE),
760 SSL_CONF_CMD_STRING(RecordPadding, "record_padding", 0),
761 SSL_CONF_CMD_STRING(NumTickets, "num_tickets", SSL_CONF_FLAG_SERVER),
762};
763
764/* Supported switches: must match order of switches in ssl_conf_cmds */
765static const ssl_switch_tbl ssl_cmd_switches[] = {
766 {SSL_OP_NO_SSLv3, 0}, /* no_ssl3 */
767 {SSL_OP_NO_TLSv1, 0}, /* no_tls1 */
768 {SSL_OP_NO_TLSv1_1, 0}, /* no_tls1_1 */
769 {SSL_OP_NO_TLSv1_2, 0}, /* no_tls1_2 */
770 {SSL_OP_NO_TLSv1_3, 0}, /* no_tls1_3 */
771 {SSL_OP_ALL, 0}, /* bugs */
772 {SSL_OP_NO_COMPRESSION, 0}, /* no_comp */
773 {SSL_OP_NO_COMPRESSION, SSL_TFLAG_INV}, /* comp */
774 {SSL_OP_SINGLE_ECDH_USE, 0}, /* ecdh_single */
775 {SSL_OP_NO_TICKET, 0}, /* no_ticket */
776 {SSL_OP_CIPHER_SERVER_PREFERENCE, 0}, /* serverpref */
777 /* legacy_renegotiation */
778 {SSL_OP_ALLOW_UNSAFE_LEGACY_RENEGOTIATION, 0},
779 /* Allow client renegotiation */
780 {SSL_OP_ALLOW_CLIENT_RENEGOTIATION, 0},
781 /* legacy_server_connect */
782 {SSL_OP_LEGACY_SERVER_CONNECT, 0},
783 /* no_renegotiation */
784 {SSL_OP_NO_RENEGOTIATION, 0},
785 /* no_resumption_on_reneg */
786 {SSL_OP_NO_SESSION_RESUMPTION_ON_RENEGOTIATION, 0},
787 /* no_legacy_server_connect */
788 {SSL_OP_LEGACY_SERVER_CONNECT, SSL_TFLAG_INV},
789 /* allow_no_dhe_kex */
790 {SSL_OP_ALLOW_NO_DHE_KEX, 0},
791 /* chacha reprioritization */
792 {SSL_OP_PRIORITIZE_CHACHA, 0},
793 {SSL_CERT_FLAG_TLS_STRICT, SSL_TFLAG_CERT}, /* strict */
794 /* no_middlebox */
795 {SSL_OP_ENABLE_MIDDLEBOX_COMPAT, SSL_TFLAG_INV},
796 /* anti_replay */
797 {SSL_OP_NO_ANTI_REPLAY, SSL_TFLAG_INV},
798 /* no_anti_replay */
799 {SSL_OP_NO_ANTI_REPLAY, 0},
800 /* no Encrypt-then-Mac */
801 {SSL_OP_NO_ENCRYPT_THEN_MAC, 0},
802};
803
804static int ssl_conf_cmd_skip_prefix(SSL_CONF_CTX *cctx, const char **pcmd)
805{
806 if (pcmd == NULL || *pcmd == NULL)
807 return 0;
808 /* If a prefix is set, check and skip */
809 if (cctx->prefix) {
810 if (strlen(*pcmd) <= cctx->prefixlen)
811 return 0;
812 if (cctx->flags & SSL_CONF_FLAG_CMDLINE &&
813 strncmp(*pcmd, cctx->prefix, cctx->prefixlen))
814 return 0;
815 if (cctx->flags & SSL_CONF_FLAG_FILE &&
816 OPENSSL_strncasecmp(*pcmd, cctx->prefix, cctx->prefixlen))
817 return 0;
818 *pcmd += cctx->prefixlen;
819 } else if (cctx->flags & SSL_CONF_FLAG_CMDLINE) {
820 if (**pcmd != '-' || !(*pcmd)[1])
821 return 0;
822 *pcmd += 1;
823 }
824 return 1;
825}
826
827/* Determine if a command is allowed according to cctx flags */
828static int ssl_conf_cmd_allowed(SSL_CONF_CTX *cctx, const ssl_conf_cmd_tbl * t)
829{
830 unsigned int tfl = t->flags;
831 unsigned int cfl = cctx->flags;
832 if ((tfl & SSL_CONF_FLAG_SERVER) && !(cfl & SSL_CONF_FLAG_SERVER))
833 return 0;
834 if ((tfl & SSL_CONF_FLAG_CLIENT) && !(cfl & SSL_CONF_FLAG_CLIENT))
835 return 0;
836 if ((tfl & SSL_CONF_FLAG_CERTIFICATE)
837 && !(cfl & SSL_CONF_FLAG_CERTIFICATE))
838 return 0;
839 return 1;
840}
841
842static const ssl_conf_cmd_tbl *ssl_conf_cmd_lookup(SSL_CONF_CTX *cctx,
843 const char *cmd)
844{
845 const ssl_conf_cmd_tbl *t;
846 size_t i;
847 if (cmd == NULL)
848 return NULL;
849
850 /* Look for matching parameter name in table */
851 for (i = 0, t = ssl_conf_cmds; i < OSSL_NELEM(ssl_conf_cmds); i++, t++) {
852 if (ssl_conf_cmd_allowed(cctx, t)) {
853 if (cctx->flags & SSL_CONF_FLAG_CMDLINE) {
854 if (t->str_cmdline && strcmp(t->str_cmdline, cmd) == 0)
855 return t;
856 }
857 if (cctx->flags & SSL_CONF_FLAG_FILE) {
858 if (t->str_file && OPENSSL_strcasecmp(t->str_file, cmd) == 0)
859 return t;
860 }
861 }
862 }
863 return NULL;
864}
865
866static int ctrl_switch_option(SSL_CONF_CTX *cctx, const ssl_conf_cmd_tbl * cmd)
867{
868 /* Find index of command in table */
869 size_t idx = cmd - ssl_conf_cmds;
870 const ssl_switch_tbl *scmd;
871 /* Sanity check index */
872 if (idx >= OSSL_NELEM(ssl_cmd_switches))
873 return 0;
874 /* Obtain switches entry with same index */
875 scmd = ssl_cmd_switches + idx;
876 ssl_set_option(cctx, scmd->name_flags, scmd->option_value, 1);
877 return 1;
878}
879
880int SSL_CONF_cmd(SSL_CONF_CTX *cctx, const char *cmd, const char *value)
881{
882 const ssl_conf_cmd_tbl *runcmd;
883 if (cmd == NULL) {
884 ERR_raise(ERR_LIB_SSL, SSL_R_INVALID_NULL_CMD_NAME);
885 return 0;
886 }
887
888 if (!ssl_conf_cmd_skip_prefix(cctx, &cmd))
889 return -2;
890
891 runcmd = ssl_conf_cmd_lookup(cctx, cmd);
892
893 if (runcmd) {
894 int rv;
895 if (runcmd->value_type == SSL_CONF_TYPE_NONE) {
896 return ctrl_switch_option(cctx, runcmd);
897 }
898 if (value == NULL)
899 return -3;
900 rv = runcmd->cmd(cctx, value);
901 if (rv > 0)
902 return 2;
903 if (rv == -2)
904 return -2;
905 if (cctx->flags & SSL_CONF_FLAG_SHOW_ERRORS)
906 ERR_raise_data(ERR_LIB_SSL, SSL_R_BAD_VALUE,
907 "cmd=%s, value=%s", cmd, value);
908 return 0;
909 }
910
911 if (cctx->flags & SSL_CONF_FLAG_SHOW_ERRORS)
912 ERR_raise_data(ERR_LIB_SSL, SSL_R_UNKNOWN_CMD_NAME, "cmd=%s", cmd);
913
914 return -2;
915}
916
917int SSL_CONF_cmd_argv(SSL_CONF_CTX *cctx, int *pargc, char ***pargv)
918{
919 int rv;
920 const char *arg = NULL, *argn;
921
922 if (pargc != NULL && *pargc == 0)
923 return 0;
924 if (pargc == NULL || *pargc > 0)
925 arg = **pargv;
926 if (arg == NULL)
927 return 0;
928 if (pargc == NULL || *pargc > 1)
929 argn = (*pargv)[1];
930 else
931 argn = NULL;
932 cctx->flags &= ~SSL_CONF_FLAG_FILE;
933 cctx->flags |= SSL_CONF_FLAG_CMDLINE;
934 rv = SSL_CONF_cmd(cctx, arg, argn);
935 if (rv > 0) {
936 /* Success: update pargc, pargv */
937 (*pargv) += rv;
938 if (pargc)
939 (*pargc) -= rv;
940 return rv;
941 }
942 /* Unknown switch: indicate no arguments processed */
943 if (rv == -2)
944 return 0;
945 /* Some error occurred processing command, return fatal error */
946 if (rv == 0)
947 return -1;
948 return rv;
949}
950
951int SSL_CONF_cmd_value_type(SSL_CONF_CTX *cctx, const char *cmd)
952{
953 if (ssl_conf_cmd_skip_prefix(cctx, &cmd)) {
954 const ssl_conf_cmd_tbl *runcmd;
955 runcmd = ssl_conf_cmd_lookup(cctx, cmd);
956 if (runcmd)
957 return runcmd->value_type;
958 }
959 return SSL_CONF_TYPE_UNKNOWN;
960}
961
962SSL_CONF_CTX *SSL_CONF_CTX_new(void)
963{
964 SSL_CONF_CTX *ret = OPENSSL_zalloc(sizeof(*ret));
965
966 return ret;
967}
968
969int SSL_CONF_CTX_finish(SSL_CONF_CTX *cctx)
970{
971 /* See if any certificates are missing private keys */
972 size_t i;
973 CERT *c = NULL;
974 if (cctx->ctx)
975 c = cctx->ctx->cert;
976 else if (cctx->ssl)
977 c = cctx->ssl->cert;
978 if (c && cctx->flags & SSL_CONF_FLAG_REQUIRE_PRIVATE) {
979 for (i = 0; i < SSL_PKEY_NUM; i++) {
980 const char *p = cctx->cert_filename[i];
981 /*
982 * If missing private key try to load one from certificate file
983 */
984 if (p && !c->pkeys[i].privatekey) {
985 if (!cmd_PrivateKey(cctx, p))
986 return 0;
987 }
988 }
989 }
990 if (cctx->canames) {
991 if (cctx->ssl)
992 SSL_set0_CA_list(cctx->ssl, cctx->canames);
993 else if (cctx->ctx)
994 SSL_CTX_set0_CA_list(cctx->ctx, cctx->canames);
995 else
996 sk_X509_NAME_pop_free(cctx->canames, X509_NAME_free);
997 cctx->canames = NULL;
998 }
999 return 1;
1000}
1001
1002void SSL_CONF_CTX_free(SSL_CONF_CTX *cctx)
1003{
1004 if (cctx) {
1005 size_t i;
1006 for (i = 0; i < SSL_PKEY_NUM; i++)
1007 OPENSSL_free(cctx->cert_filename[i]);
1008 OPENSSL_free(cctx->prefix);
1009 sk_X509_NAME_pop_free(cctx->canames, X509_NAME_free);
1010 OPENSSL_free(cctx);
1011 }
1012}
1013
1014unsigned int SSL_CONF_CTX_set_flags(SSL_CONF_CTX *cctx, unsigned int flags)
1015{
1016 cctx->flags |= flags;
1017 return cctx->flags;
1018}
1019
1020unsigned int SSL_CONF_CTX_clear_flags(SSL_CONF_CTX *cctx, unsigned int flags)
1021{
1022 cctx->flags &= ~flags;
1023 return cctx->flags;
1024}
1025
1026int SSL_CONF_CTX_set1_prefix(SSL_CONF_CTX *cctx, const char *pre)
1027{
1028 char *tmp = NULL;
1029 if (pre) {
1030 tmp = OPENSSL_strdup(pre);
1031 if (tmp == NULL)
1032 return 0;
1033 }
1034 OPENSSL_free(cctx->prefix);
1035 cctx->prefix = tmp;
1036 if (tmp)
1037 cctx->prefixlen = strlen(tmp);
1038 else
1039 cctx->prefixlen = 0;
1040 return 1;
1041}
1042
1043void SSL_CONF_CTX_set_ssl(SSL_CONF_CTX *cctx, SSL *ssl)
1044{
1045 cctx->ssl = ssl;
1046 cctx->ctx = NULL;
1047 if (ssl) {
1048 cctx->poptions = &ssl->options;
1049 cctx->min_version = &ssl->min_proto_version;
1050 cctx->max_version = &ssl->max_proto_version;
1051 cctx->pcert_flags = &ssl->cert->cert_flags;
1052 cctx->pvfy_flags = &ssl->verify_mode;
1053 } else {
1054 cctx->poptions = NULL;
1055 cctx->min_version = NULL;
1056 cctx->max_version = NULL;
1057 cctx->pcert_flags = NULL;
1058 cctx->pvfy_flags = NULL;
1059 }
1060}
1061
1062void SSL_CONF_CTX_set_ssl_ctx(SSL_CONF_CTX *cctx, SSL_CTX *ctx)
1063{
1064 cctx->ctx = ctx;
1065 cctx->ssl = NULL;
1066 if (ctx) {
1067 cctx->poptions = &ctx->options;
1068 cctx->min_version = &ctx->min_proto_version;
1069 cctx->max_version = &ctx->max_proto_version;
1070 cctx->pcert_flags = &ctx->cert->cert_flags;
1071 cctx->pvfy_flags = &ctx->verify_mode;
1072 } else {
1073 cctx->poptions = NULL;
1074 cctx->min_version = NULL;
1075 cctx->max_version = NULL;
1076 cctx->pcert_flags = NULL;
1077 cctx->pvfy_flags = NULL;
1078 }
1079}
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