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source: vbox/trunk/src/libs/openssl-3.1.3/ssl/ssl_conf.c@ 101665

Last change on this file since 101665 was 101211, checked in by vboxsync, 12 months ago

openssl-3.1.3: Applied and adjusted our OpenSSL changes to 3.1.2. bugref:10527
File size: 33.5 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("UnsafeLegacyServerConnect",
388 SSL_OP_LEGACY_SERVER_CONNECT),
389 SSL_FLAG_TBL("ClientRenegotiation",
390 SSL_OP_ALLOW_CLIENT_RENEGOTIATION),
391 SSL_FLAG_TBL_INV("EncryptThenMac", SSL_OP_NO_ENCRYPT_THEN_MAC),
392 SSL_FLAG_TBL("NoRenegotiation", SSL_OP_NO_RENEGOTIATION),
393 SSL_FLAG_TBL("AllowNoDHEKEX", SSL_OP_ALLOW_NO_DHE_KEX),
394 SSL_FLAG_TBL("PrioritizeChaCha", SSL_OP_PRIORITIZE_CHACHA),
395 SSL_FLAG_TBL("MiddleboxCompat", SSL_OP_ENABLE_MIDDLEBOX_COMPAT),
396 SSL_FLAG_TBL_INV("AntiReplay", SSL_OP_NO_ANTI_REPLAY),
397 SSL_FLAG_TBL_INV("ExtendedMasterSecret", SSL_OP_NO_EXTENDED_MASTER_SECRET),
398 SSL_FLAG_TBL_INV("CANames", SSL_OP_DISABLE_TLSEXT_CA_NAMES),
399 SSL_FLAG_TBL("KTLS", SSL_OP_ENABLE_KTLS)
400 };
401 if (value == NULL)
402 return -3;
403 cctx->tbl = ssl_option_list;
404 cctx->ntbl = OSSL_NELEM(ssl_option_list);
405 return CONF_parse_list(value, ',', 1, ssl_set_option_list, cctx);
406}
407
408static int cmd_VerifyMode(SSL_CONF_CTX *cctx, const char *value)
409{
410 static const ssl_flag_tbl ssl_vfy_list[] = {
411 SSL_FLAG_VFY_CLI("Peer", SSL_VERIFY_PEER),
412 SSL_FLAG_VFY_SRV("Request", SSL_VERIFY_PEER),
413 SSL_FLAG_VFY_SRV("Require",
414 SSL_VERIFY_PEER | SSL_VERIFY_FAIL_IF_NO_PEER_CERT),
415 SSL_FLAG_VFY_SRV("Once", SSL_VERIFY_PEER | SSL_VERIFY_CLIENT_ONCE),
416 SSL_FLAG_VFY_SRV("RequestPostHandshake",
417 SSL_VERIFY_PEER | SSL_VERIFY_POST_HANDSHAKE),
418 SSL_FLAG_VFY_SRV("RequirePostHandshake",
419 SSL_VERIFY_PEER | SSL_VERIFY_POST_HANDSHAKE |
420 SSL_VERIFY_FAIL_IF_NO_PEER_CERT),
421 };
422 if (value == NULL)
423 return -3;
424 cctx->tbl = ssl_vfy_list;
425 cctx->ntbl = OSSL_NELEM(ssl_vfy_list);
426 return CONF_parse_list(value, ',', 1, ssl_set_option_list, cctx);
427}
428
429static int cmd_Certificate(SSL_CONF_CTX *cctx, const char *value)
430{
431 int rv = 1;
432 CERT *c = NULL;
433 if (cctx->ctx) {
434 rv = SSL_CTX_use_certificate_chain_file(cctx->ctx, value);
435 c = cctx->ctx->cert;
436 }
437 if (cctx->ssl) {
438 rv = SSL_use_certificate_chain_file(cctx->ssl, value);
439 c = cctx->ssl->cert;
440 }
441 if (rv > 0 && c && cctx->flags & SSL_CONF_FLAG_REQUIRE_PRIVATE) {
442 char **pfilename = &cctx->cert_filename[c->key - c->pkeys];
443 OPENSSL_free(*pfilename);
444 *pfilename = OPENSSL_strdup(value);
445 if (*pfilename == NULL)
446 rv = 0;
447 }
448
449 return rv > 0;
450}
451
452static int cmd_PrivateKey(SSL_CONF_CTX *cctx, const char *value)
453{
454 int rv = 1;
455 if (!(cctx->flags & SSL_CONF_FLAG_CERTIFICATE))
456 return -2;
457 if (cctx->ctx)
458 rv = SSL_CTX_use_PrivateKey_file(cctx->ctx, value, SSL_FILETYPE_PEM);
459 if (cctx->ssl)
460 rv = SSL_use_PrivateKey_file(cctx->ssl, value, SSL_FILETYPE_PEM);
461 return rv > 0;
462}
463
464static int cmd_ServerInfoFile(SSL_CONF_CTX *cctx, const char *value)
465{
466 int rv = 1;
467 if (cctx->ctx)
468 rv = SSL_CTX_use_serverinfo_file(cctx->ctx, value);
469 return rv > 0;
470}
471
472static int do_store(SSL_CONF_CTX *cctx,
473 const char *CAfile, const char *CApath, const char *CAstore,
474 int verify_store)
475{
476 CERT *cert;
477 X509_STORE **st;
478 SSL_CTX *ctx;
479 OSSL_LIB_CTX *libctx = NULL;
480 const char *propq = NULL;
481
482 if (cctx->ctx != NULL) {
483 cert = cctx->ctx->cert;
484 ctx = cctx->ctx;
485 } else if (cctx->ssl != NULL) {
486 cert = cctx->ssl->cert;
487 ctx = cctx->ssl->ctx;
488 } else {
489 return 1;
490 }
491 if (ctx != NULL) {
492 libctx = ctx->libctx;
493 propq = ctx->propq;
494 }
495 st = verify_store ? &cert->verify_store : &cert->chain_store;
496 if (*st == NULL) {
497 *st = X509_STORE_new();
498 if (*st == NULL)
499 return 0;
500 }
501
502 if (CAfile != NULL && !X509_STORE_load_file_ex(*st, CAfile, libctx, propq))
503 return 0;
504 if (CApath != NULL && !X509_STORE_load_path(*st, CApath))
505 return 0;
506 if (CAstore != NULL && !X509_STORE_load_store_ex(*st, CAstore, libctx,
507 propq))
508 return 0;
509 return 1;
510}
511
512static int cmd_ChainCAPath(SSL_CONF_CTX *cctx, const char *value)
513{
514 return do_store(cctx, NULL, value, NULL, 0);
515}
516
517static int cmd_ChainCAFile(SSL_CONF_CTX *cctx, const char *value)
518{
519 return do_store(cctx, value, NULL, NULL, 0);
520}
521
522static int cmd_ChainCAStore(SSL_CONF_CTX *cctx, const char *value)
523{
524 return do_store(cctx, NULL, NULL, value, 0);
525}
526
527static int cmd_VerifyCAPath(SSL_CONF_CTX *cctx, const char *value)
528{
529 return do_store(cctx, NULL, value, NULL, 1);
530}
531
532static int cmd_VerifyCAFile(SSL_CONF_CTX *cctx, const char *value)
533{
534 return do_store(cctx, value, NULL, NULL, 1);
535}
536
537static int cmd_VerifyCAStore(SSL_CONF_CTX *cctx, const char *value)
538{
539 return do_store(cctx, NULL, NULL, value, 1);
540}
541
542static int cmd_RequestCAFile(SSL_CONF_CTX *cctx, const char *value)
543{
544 if (cctx->canames == NULL)
545 cctx->canames = sk_X509_NAME_new_null();
546 if (cctx->canames == NULL)
547 return 0;
548 return SSL_add_file_cert_subjects_to_stack(cctx->canames, value);
549}
550
551static int cmd_ClientCAFile(SSL_CONF_CTX *cctx, const char *value)
552{
553 return cmd_RequestCAFile(cctx, value);
554}
555
556static int cmd_RequestCAPath(SSL_CONF_CTX *cctx, const char *value)
557{
558 if (cctx->canames == NULL)
559 cctx->canames = sk_X509_NAME_new_null();
560 if (cctx->canames == NULL)
561 return 0;
562 return SSL_add_dir_cert_subjects_to_stack(cctx->canames, value);
563}
564
565static int cmd_ClientCAPath(SSL_CONF_CTX *cctx, const char *value)
566{
567 return cmd_RequestCAPath(cctx, value);
568}
569
570static int cmd_RequestCAStore(SSL_CONF_CTX *cctx, const char *value)
571{
572 if (cctx->canames == NULL)
573 cctx->canames = sk_X509_NAME_new_null();
574 if (cctx->canames == NULL)
575 return 0;
576 return SSL_add_store_cert_subjects_to_stack(cctx->canames, value);
577}
578
579static int cmd_ClientCAStore(SSL_CONF_CTX *cctx, const char *value)
580{
581 return cmd_RequestCAStore(cctx, value);
582}
583
584static int cmd_DHParameters(SSL_CONF_CTX *cctx, const char *value)
585{
586 int rv = 0;
587 EVP_PKEY *dhpkey = NULL;
588 BIO *in = NULL;
589 SSL_CTX *sslctx = (cctx->ssl != NULL) ? cctx->ssl->ctx : cctx->ctx;
590 OSSL_DECODER_CTX *decoderctx = NULL;
591
592 if (cctx->ctx != NULL || cctx->ssl != NULL) {
593 in = BIO_new(BIO_s_file());
594 if (in == NULL)
595 goto end;
596 if (BIO_read_filename(in, value) <= 0)
597 goto end;
598
599 decoderctx
600 = OSSL_DECODER_CTX_new_for_pkey(&dhpkey, "PEM", NULL, "DH",
601 OSSL_KEYMGMT_SELECT_DOMAIN_PARAMETERS,
602 sslctx->libctx, sslctx->propq);
603 if (decoderctx == NULL)
604 goto end;
605 ERR_set_mark();
606 while (!OSSL_DECODER_from_bio(decoderctx, in)
607 && dhpkey == NULL
608 && !BIO_eof(in));
609 OSSL_DECODER_CTX_free(decoderctx);
610
611 if (dhpkey == NULL) {
612 ERR_clear_last_mark();
613 goto end;
614 }
615 ERR_pop_to_mark();
616 } else {
617 return 1;
618 }
619
620 if (cctx->ctx != NULL) {
621 if ((rv = SSL_CTX_set0_tmp_dh_pkey(cctx->ctx, dhpkey)) > 0)
622 dhpkey = NULL;
623 }
624 if (cctx->ssl != NULL) {
625 if ((rv = SSL_set0_tmp_dh_pkey(cctx->ssl, dhpkey)) > 0)
626 dhpkey = NULL;
627 }
628 end:
629 EVP_PKEY_free(dhpkey);
630 BIO_free(in);
631 return rv > 0;
632}
633
634static int cmd_RecordPadding(SSL_CONF_CTX *cctx, const char *value)
635{
636 int rv = 0;
637 int block_size = atoi(value);
638
639 /*
640 * All we care about is a non-negative value,
641 * the setters check the range
642 */
643 if (block_size >= 0) {
644 if (cctx->ctx)
645 rv = SSL_CTX_set_block_padding(cctx->ctx, block_size);
646 if (cctx->ssl)
647 rv = SSL_set_block_padding(cctx->ssl, block_size);
648 }
649 return rv;
650}
651
652
653static int cmd_NumTickets(SSL_CONF_CTX *cctx, const char *value)
654{
655 int rv = 0;
656 int num_tickets = atoi(value);
657
658 if (num_tickets >= 0) {
659 if (cctx->ctx)
660 rv = SSL_CTX_set_num_tickets(cctx->ctx, num_tickets);
661 if (cctx->ssl)
662 rv = SSL_set_num_tickets(cctx->ssl, num_tickets);
663 }
664 return rv;
665}
666
667typedef struct {
668 int (*cmd) (SSL_CONF_CTX *cctx, const char *value);
669 const char *str_file;
670 const char *str_cmdline;
671 unsigned short flags;
672 unsigned short value_type;
673} ssl_conf_cmd_tbl;
674
675/* Table of supported parameters */
676
677#define SSL_CONF_CMD(name, cmdopt, flags, type) \
678 {cmd_##name, #name, cmdopt, flags, type}
679
680#define SSL_CONF_CMD_STRING(name, cmdopt, flags) \
681 SSL_CONF_CMD(name, cmdopt, flags, SSL_CONF_TYPE_STRING)
682
683#define SSL_CONF_CMD_SWITCH(name, flags) \
684 {0, NULL, name, flags, SSL_CONF_TYPE_NONE}
685
686/* See apps/include/opt.h if you change this table. */
687/* The SSL_CONF_CMD_SWITCH should be the same order as ssl_cmd_switches */
688static const ssl_conf_cmd_tbl ssl_conf_cmds[] = {
689 SSL_CONF_CMD_SWITCH("no_ssl3", 0),
690 SSL_CONF_CMD_SWITCH("no_tls1", 0),
691 SSL_CONF_CMD_SWITCH("no_tls1_1", 0),
692 SSL_CONF_CMD_SWITCH("no_tls1_2", 0),
693 SSL_CONF_CMD_SWITCH("no_tls1_3", 0),
694 SSL_CONF_CMD_SWITCH("bugs", 0),
695 SSL_CONF_CMD_SWITCH("no_comp", 0),
696 SSL_CONF_CMD_SWITCH("comp", 0),
697 SSL_CONF_CMD_SWITCH("ecdh_single", SSL_CONF_FLAG_SERVER),
698 SSL_CONF_CMD_SWITCH("no_ticket", 0),
699 SSL_CONF_CMD_SWITCH("serverpref", SSL_CONF_FLAG_SERVER),
700 SSL_CONF_CMD_SWITCH("legacy_renegotiation", 0),
701 SSL_CONF_CMD_SWITCH("client_renegotiation", SSL_CONF_FLAG_SERVER),
702 SSL_CONF_CMD_SWITCH("legacy_server_connect", SSL_CONF_FLAG_CLIENT),
703 SSL_CONF_CMD_SWITCH("no_renegotiation", 0),
704 SSL_CONF_CMD_SWITCH("no_resumption_on_reneg", SSL_CONF_FLAG_SERVER),
705 SSL_CONF_CMD_SWITCH("no_legacy_server_connect", SSL_CONF_FLAG_CLIENT),
706 SSL_CONF_CMD_SWITCH("allow_no_dhe_kex", 0),
707 SSL_CONF_CMD_SWITCH("prioritize_chacha", SSL_CONF_FLAG_SERVER),
708 SSL_CONF_CMD_SWITCH("strict", 0),
709 SSL_CONF_CMD_SWITCH("no_middlebox", 0),
710 SSL_CONF_CMD_SWITCH("anti_replay", SSL_CONF_FLAG_SERVER),
711 SSL_CONF_CMD_SWITCH("no_anti_replay", SSL_CONF_FLAG_SERVER),
712 SSL_CONF_CMD_SWITCH("no_etm", 0),
713 SSL_CONF_CMD_STRING(SignatureAlgorithms, "sigalgs", 0),
714 SSL_CONF_CMD_STRING(ClientSignatureAlgorithms, "client_sigalgs", 0),
715 SSL_CONF_CMD_STRING(Curves, "curves", 0),
716 SSL_CONF_CMD_STRING(Groups, "groups", 0),
717 SSL_CONF_CMD_STRING(ECDHParameters, "named_curve", SSL_CONF_FLAG_SERVER),
718 SSL_CONF_CMD_STRING(CipherString, "cipher", 0),
719 SSL_CONF_CMD_STRING(Ciphersuites, "ciphersuites", 0),
720 SSL_CONF_CMD_STRING(Protocol, NULL, 0),
721 SSL_CONF_CMD_STRING(MinProtocol, "min_protocol", 0),
722 SSL_CONF_CMD_STRING(MaxProtocol, "max_protocol", 0),
723 SSL_CONF_CMD_STRING(Options, NULL, 0),
724 SSL_CONF_CMD_STRING(VerifyMode, NULL, 0),
725 SSL_CONF_CMD(Certificate, "cert", SSL_CONF_FLAG_CERTIFICATE,
726 SSL_CONF_TYPE_FILE),
727 SSL_CONF_CMD(PrivateKey, "key", SSL_CONF_FLAG_CERTIFICATE,
728 SSL_CONF_TYPE_FILE),
729 SSL_CONF_CMD(ServerInfoFile, NULL,
730 SSL_CONF_FLAG_SERVER | SSL_CONF_FLAG_CERTIFICATE,
731 SSL_CONF_TYPE_FILE),
732 SSL_CONF_CMD(ChainCAPath, "chainCApath", SSL_CONF_FLAG_CERTIFICATE,
733 SSL_CONF_TYPE_DIR),
734 SSL_CONF_CMD(ChainCAFile, "chainCAfile", SSL_CONF_FLAG_CERTIFICATE,
735 SSL_CONF_TYPE_FILE),
736 SSL_CONF_CMD(ChainCAStore, "chainCAstore", SSL_CONF_FLAG_CERTIFICATE,
737 SSL_CONF_TYPE_STORE),
738 SSL_CONF_CMD(VerifyCAPath, "verifyCApath", SSL_CONF_FLAG_CERTIFICATE,
739 SSL_CONF_TYPE_DIR),
740 SSL_CONF_CMD(VerifyCAFile, "verifyCAfile", SSL_CONF_FLAG_CERTIFICATE,
741 SSL_CONF_TYPE_FILE),
742 SSL_CONF_CMD(VerifyCAStore, "verifyCAstore", SSL_CONF_FLAG_CERTIFICATE,
743 SSL_CONF_TYPE_STORE),
744 SSL_CONF_CMD(RequestCAFile, "requestCAFile", SSL_CONF_FLAG_CERTIFICATE,
745 SSL_CONF_TYPE_FILE),
746 SSL_CONF_CMD(ClientCAFile, NULL,
747 SSL_CONF_FLAG_SERVER | SSL_CONF_FLAG_CERTIFICATE,
748 SSL_CONF_TYPE_FILE),
749 SSL_CONF_CMD(RequestCAPath, NULL, SSL_CONF_FLAG_CERTIFICATE,
750 SSL_CONF_TYPE_DIR),
751 SSL_CONF_CMD(ClientCAPath, NULL,
752 SSL_CONF_FLAG_SERVER | SSL_CONF_FLAG_CERTIFICATE,
753 SSL_CONF_TYPE_DIR),
754 SSL_CONF_CMD(RequestCAStore, "requestCAStore", SSL_CONF_FLAG_CERTIFICATE,
755 SSL_CONF_TYPE_STORE),
756 SSL_CONF_CMD(ClientCAStore, NULL,
757 SSL_CONF_FLAG_SERVER | SSL_CONF_FLAG_CERTIFICATE,
758 SSL_CONF_TYPE_STORE),
759 SSL_CONF_CMD(DHParameters, "dhparam",
760 SSL_CONF_FLAG_SERVER | SSL_CONF_FLAG_CERTIFICATE,
761 SSL_CONF_TYPE_FILE),
762 SSL_CONF_CMD_STRING(RecordPadding, "record_padding", 0),
763 SSL_CONF_CMD_STRING(NumTickets, "num_tickets", SSL_CONF_FLAG_SERVER),
764};
765
766/* Supported switches: must match order of switches in ssl_conf_cmds */
767static const ssl_switch_tbl ssl_cmd_switches[] = {
768 {SSL_OP_NO_SSLv3, 0}, /* no_ssl3 */
769 {SSL_OP_NO_TLSv1, 0}, /* no_tls1 */
770 {SSL_OP_NO_TLSv1_1, 0}, /* no_tls1_1 */
771 {SSL_OP_NO_TLSv1_2, 0}, /* no_tls1_2 */
772 {SSL_OP_NO_TLSv1_3, 0}, /* no_tls1_3 */
773 {SSL_OP_ALL, 0}, /* bugs */
774 {SSL_OP_NO_COMPRESSION, 0}, /* no_comp */
775 {SSL_OP_NO_COMPRESSION, SSL_TFLAG_INV}, /* comp */
776 {SSL_OP_SINGLE_ECDH_USE, 0}, /* ecdh_single */
777 {SSL_OP_NO_TICKET, 0}, /* no_ticket */
778 {SSL_OP_CIPHER_SERVER_PREFERENCE, 0}, /* serverpref */
779 /* legacy_renegotiation */
780 {SSL_OP_ALLOW_UNSAFE_LEGACY_RENEGOTIATION, 0},
781 /* Allow client renegotiation */
782 {SSL_OP_ALLOW_CLIENT_RENEGOTIATION, 0},
783 /* legacy_server_connect */
784 {SSL_OP_LEGACY_SERVER_CONNECT, 0},
785 /* no_renegotiation */
786 {SSL_OP_NO_RENEGOTIATION, 0},
787 /* no_resumption_on_reneg */
788 {SSL_OP_NO_SESSION_RESUMPTION_ON_RENEGOTIATION, 0},
789 /* no_legacy_server_connect */
790 {SSL_OP_LEGACY_SERVER_CONNECT, SSL_TFLAG_INV},
791 /* allow_no_dhe_kex */
792 {SSL_OP_ALLOW_NO_DHE_KEX, 0},
793 /* chacha reprioritization */
794 {SSL_OP_PRIORITIZE_CHACHA, 0},
795 {SSL_CERT_FLAG_TLS_STRICT, SSL_TFLAG_CERT}, /* strict */
796 /* no_middlebox */
797 {SSL_OP_ENABLE_MIDDLEBOX_COMPAT, SSL_TFLAG_INV},
798 /* anti_replay */
799 {SSL_OP_NO_ANTI_REPLAY, SSL_TFLAG_INV},
800 /* no_anti_replay */
801 {SSL_OP_NO_ANTI_REPLAY, 0},
802 /* no Encrypt-then-Mac */
803 {SSL_OP_NO_ENCRYPT_THEN_MAC, 0},
804};
805
806static int ssl_conf_cmd_skip_prefix(SSL_CONF_CTX *cctx, const char **pcmd)
807{
808 if (pcmd == NULL || *pcmd == NULL)
809 return 0;
810 /* If a prefix is set, check and skip */
811 if (cctx->prefix) {
812 if (strlen(*pcmd) <= cctx->prefixlen)
813 return 0;
814 if (cctx->flags & SSL_CONF_FLAG_CMDLINE &&
815 strncmp(*pcmd, cctx->prefix, cctx->prefixlen))
816 return 0;
817 if (cctx->flags & SSL_CONF_FLAG_FILE &&
818 OPENSSL_strncasecmp(*pcmd, cctx->prefix, cctx->prefixlen))
819 return 0;
820 *pcmd += cctx->prefixlen;
821 } else if (cctx->flags & SSL_CONF_FLAG_CMDLINE) {
822 if (**pcmd != '-' || !(*pcmd)[1])
823 return 0;
824 *pcmd += 1;
825 }
826 return 1;
827}
828
829/* Determine if a command is allowed according to cctx flags */
830static int ssl_conf_cmd_allowed(SSL_CONF_CTX *cctx, const ssl_conf_cmd_tbl * t)
831{
832 unsigned int tfl = t->flags;
833 unsigned int cfl = cctx->flags;
834 if ((tfl & SSL_CONF_FLAG_SERVER) && !(cfl & SSL_CONF_FLAG_SERVER))
835 return 0;
836 if ((tfl & SSL_CONF_FLAG_CLIENT) && !(cfl & SSL_CONF_FLAG_CLIENT))
837 return 0;
838 if ((tfl & SSL_CONF_FLAG_CERTIFICATE)
839 && !(cfl & SSL_CONF_FLAG_CERTIFICATE))
840 return 0;
841 return 1;
842}
843
844static const ssl_conf_cmd_tbl *ssl_conf_cmd_lookup(SSL_CONF_CTX *cctx,
845 const char *cmd)
846{
847 const ssl_conf_cmd_tbl *t;
848 size_t i;
849 if (cmd == NULL)
850 return NULL;
851
852 /* Look for matching parameter name in table */
853 for (i = 0, t = ssl_conf_cmds; i < OSSL_NELEM(ssl_conf_cmds); i++, t++) {
854 if (ssl_conf_cmd_allowed(cctx, t)) {
855 if (cctx->flags & SSL_CONF_FLAG_CMDLINE) {
856 if (t->str_cmdline && strcmp(t->str_cmdline, cmd) == 0)
857 return t;
858 }
859 if (cctx->flags & SSL_CONF_FLAG_FILE) {
860 if (t->str_file && OPENSSL_strcasecmp(t->str_file, cmd) == 0)
861 return t;
862 }
863 }
864 }
865 return NULL;
866}
867
868static int ctrl_switch_option(SSL_CONF_CTX *cctx, const ssl_conf_cmd_tbl * cmd)
869{
870 /* Find index of command in table */
871 size_t idx = cmd - ssl_conf_cmds;
872 const ssl_switch_tbl *scmd;
873 /* Sanity check index */
874 if (idx >= OSSL_NELEM(ssl_cmd_switches))
875 return 0;
876 /* Obtain switches entry with same index */
877 scmd = ssl_cmd_switches + idx;
878 ssl_set_option(cctx, scmd->name_flags, scmd->option_value, 1);
879 return 1;
880}
881
882int SSL_CONF_cmd(SSL_CONF_CTX *cctx, const char *cmd, const char *value)
883{
884 const ssl_conf_cmd_tbl *runcmd;
885 if (cmd == NULL) {
886 ERR_raise(ERR_LIB_SSL, SSL_R_INVALID_NULL_CMD_NAME);
887 return 0;
888 }
889
890 if (!ssl_conf_cmd_skip_prefix(cctx, &cmd))
891 return -2;
892
893 runcmd = ssl_conf_cmd_lookup(cctx, cmd);
894
895 if (runcmd) {
896 int rv;
897 if (runcmd->value_type == SSL_CONF_TYPE_NONE) {
898 return ctrl_switch_option(cctx, runcmd);
899 }
900 if (value == NULL)
901 return -3;
902 rv = runcmd->cmd(cctx, value);
903 if (rv > 0)
904 return 2;
905 if (rv == -2)
906 return -2;
907 if (cctx->flags & SSL_CONF_FLAG_SHOW_ERRORS)
908 ERR_raise_data(ERR_LIB_SSL, SSL_R_BAD_VALUE,
909 "cmd=%s, value=%s", cmd, value);
910 return 0;
911 }
912
913 if (cctx->flags & SSL_CONF_FLAG_SHOW_ERRORS)
914 ERR_raise_data(ERR_LIB_SSL, SSL_R_UNKNOWN_CMD_NAME, "cmd=%s", cmd);
915
916 return -2;
917}
918
919int SSL_CONF_cmd_argv(SSL_CONF_CTX *cctx, int *pargc, char ***pargv)
920{
921 int rv;
922 const char *arg = NULL, *argn;
923
924 if (pargc != NULL && *pargc == 0)
925 return 0;
926 if (pargc == NULL || *pargc > 0)
927 arg = **pargv;
928 if (arg == NULL)
929 return 0;
930 if (pargc == NULL || *pargc > 1)
931 argn = (*pargv)[1];
932 else
933 argn = NULL;
934 cctx->flags &= ~SSL_CONF_FLAG_FILE;
935 cctx->flags |= SSL_CONF_FLAG_CMDLINE;
936 rv = SSL_CONF_cmd(cctx, arg, argn);
937 if (rv > 0) {
938 /* Success: update pargc, pargv */
939 (*pargv) += rv;
940 if (pargc)
941 (*pargc) -= rv;
942 return rv;
943 }
944 /* Unknown switch: indicate no arguments processed */
945 if (rv == -2)
946 return 0;
947 /* Some error occurred processing command, return fatal error */
948 if (rv == 0)
949 return -1;
950 return rv;
951}
952
953int SSL_CONF_cmd_value_type(SSL_CONF_CTX *cctx, const char *cmd)
954{
955 if (ssl_conf_cmd_skip_prefix(cctx, &cmd)) {
956 const ssl_conf_cmd_tbl *runcmd;
957 runcmd = ssl_conf_cmd_lookup(cctx, cmd);
958 if (runcmd)
959 return runcmd->value_type;
960 }
961 return SSL_CONF_TYPE_UNKNOWN;
962}
963
964SSL_CONF_CTX *SSL_CONF_CTX_new(void)
965{
966 SSL_CONF_CTX *ret = OPENSSL_zalloc(sizeof(*ret));
967
968 return ret;
969}
970
971int SSL_CONF_CTX_finish(SSL_CONF_CTX *cctx)
972{
973 /* See if any certificates are missing private keys */
974 size_t i;
975 CERT *c = NULL;
976 if (cctx->ctx)
977 c = cctx->ctx->cert;
978 else if (cctx->ssl)
979 c = cctx->ssl->cert;
980 if (c && cctx->flags & SSL_CONF_FLAG_REQUIRE_PRIVATE) {
981 for (i = 0; i < SSL_PKEY_NUM; i++) {
982 const char *p = cctx->cert_filename[i];
983 /*
984 * If missing private key try to load one from certificate file
985 */
986 if (p && !c->pkeys[i].privatekey) {
987 if (!cmd_PrivateKey(cctx, p))
988 return 0;
989 }
990 }
991 }
992 if (cctx->canames) {
993 if (cctx->ssl)
994 SSL_set0_CA_list(cctx->ssl, cctx->canames);
995 else if (cctx->ctx)
996 SSL_CTX_set0_CA_list(cctx->ctx, cctx->canames);
997 else
998 sk_X509_NAME_pop_free(cctx->canames, X509_NAME_free);
999 cctx->canames = NULL;
1000 }
1001 return 1;
1002}
1003
1004void SSL_CONF_CTX_free(SSL_CONF_CTX *cctx)
1005{
1006 if (cctx) {
1007 size_t i;
1008 for (i = 0; i < SSL_PKEY_NUM; i++)
1009 OPENSSL_free(cctx->cert_filename[i]);
1010 OPENSSL_free(cctx->prefix);
1011 sk_X509_NAME_pop_free(cctx->canames, X509_NAME_free);
1012 OPENSSL_free(cctx);
1013 }
1014}
1015
1016unsigned int SSL_CONF_CTX_set_flags(SSL_CONF_CTX *cctx, unsigned int flags)
1017{
1018 cctx->flags |= flags;
1019 return cctx->flags;
1020}
1021
1022unsigned int SSL_CONF_CTX_clear_flags(SSL_CONF_CTX *cctx, unsigned int flags)
1023{
1024 cctx->flags &= ~flags;
1025 return cctx->flags;
1026}
1027
1028int SSL_CONF_CTX_set1_prefix(SSL_CONF_CTX *cctx, const char *pre)
1029{
1030 char *tmp = NULL;
1031 if (pre) {
1032 tmp = OPENSSL_strdup(pre);
1033 if (tmp == NULL)
1034 return 0;
1035 }
1036 OPENSSL_free(cctx->prefix);
1037 cctx->prefix = tmp;
1038 if (tmp)
1039 cctx->prefixlen = strlen(tmp);
1040 else
1041 cctx->prefixlen = 0;
1042 return 1;
1043}
1044
1045void SSL_CONF_CTX_set_ssl(SSL_CONF_CTX *cctx, SSL *ssl)
1046{
1047 cctx->ssl = ssl;
1048 cctx->ctx = NULL;
1049 if (ssl) {
1050 cctx->poptions = &ssl->options;
1051 cctx->min_version = &ssl->min_proto_version;
1052 cctx->max_version = &ssl->max_proto_version;
1053 cctx->pcert_flags = &ssl->cert->cert_flags;
1054 cctx->pvfy_flags = &ssl->verify_mode;
1055 } else {
1056 cctx->poptions = NULL;
1057 cctx->min_version = NULL;
1058 cctx->max_version = NULL;
1059 cctx->pcert_flags = NULL;
1060 cctx->pvfy_flags = NULL;
1061 }
1062}
1063
1064void SSL_CONF_CTX_set_ssl_ctx(SSL_CONF_CTX *cctx, SSL_CTX *ctx)
1065{
1066 cctx->ctx = ctx;
1067 cctx->ssl = NULL;
1068 if (ctx) {
1069 cctx->poptions = &ctx->options;
1070 cctx->min_version = &ctx->min_proto_version;
1071 cctx->max_version = &ctx->max_proto_version;
1072 cctx->pcert_flags = &ctx->cert->cert_flags;
1073 cctx->pvfy_flags = &ctx->verify_mode;
1074 } else {
1075 cctx->poptions = NULL;
1076 cctx->min_version = NULL;
1077 cctx->max_version = NULL;
1078 cctx->pcert_flags = NULL;
1079 cctx->pvfy_flags = NULL;
1080 }
1081}
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