2 * Copyright 2012-2022 The OpenSSL Project Authors. All Rights Reserved.
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
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"
19 * structure holding name tables. This is used for permitted elements in lists
26 unsigned int name_flags;
27 uint64_t option_value;
30 /* Switch table: use for single command line switches like no_tls2 */
32 uint64_t option_value;
33 unsigned int name_flags;
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)
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}
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}
71 * Opaque structure containing SSL configuration context.
74 struct ssl_conf_ctx_st {
76 * Various flags indicating (among other things) which options we will
80 /* Prefix and length of commands */
83 /* SSL_CTX or SSL structure to perform operations on */
86 /* Pointer to SSL or SSL_CTX options field or NULL if none */
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 */
94 /* Pointer to SSL or SSL_CTX min_version field or NULL if none */
96 /* Pointer to SSL or SSL_CTX max_version field or NULL if none */
98 /* Current flag table being worked on */
99 const ssl_flag_tbl *tbl;
102 /* Client CA names */
103 STACK_OF(X509_NAME) *canames;
106 static void ssl_set_option(SSL_CONF_CTX *cctx, unsigned int name_flags,
107 uint64_t option_value, int onoff)
111 if (cctx->poptions == NULL)
113 if (name_flags & SSL_TFLAG_INV)
115 switch (name_flags & SSL_TFLAG_TYPE_MASK) {
118 pflags = cctx->pcert_flags;
122 pflags = cctx->pvfy_flags;
125 case SSL_TFLAG_OPTION:
127 *cctx->poptions |= option_value;
129 *cctx->poptions &= ~option_value;
137 *pflags |= option_value;
139 *pflags &= ~option_value;
142 static int ssl_match_option(SSL_CONF_CTX *cctx, const ssl_flag_tbl *tbl,
143 const char *name, int namelen, int onoff)
145 /* If name not relevant for context skip */
146 if (!(cctx->flags & tbl->name_flags & SSL_TFLAG_BOTH))
149 if (strcmp(tbl->name, name))
151 } else if (tbl->namelen != namelen
152 || OPENSSL_strncasecmp(tbl->name, name, namelen))
154 ssl_set_option(cctx, tbl->name_flags, tbl->option_value, onoff);
158 static int ssl_set_option_list(const char *elem, int len, void *usr)
160 SSL_CONF_CTX *cctx = usr;
162 const ssl_flag_tbl *tbl;
165 * len == -1 indicates not being called in list context, just for single
166 * command line switches, so don't allow +, -.
175 } else if (*elem == '-') {
181 for (i = 0, tbl = cctx->tbl; i < cctx->ntbl; i++, tbl++) {
182 if (ssl_match_option(cctx, tbl, elem, len, onoff))
188 /* Set supported signature algorithms */
189 static int cmd_SignatureAlgorithms(SSL_CONF_CTX *cctx, const char *value)
193 rv = SSL_set1_sigalgs_list(cctx->ssl, value);
194 /* NB: ctx == NULL performs syntax checking only */
196 rv = SSL_CTX_set1_sigalgs_list(cctx->ctx, value);
200 /* Set supported client signature algorithms */
201 static int cmd_ClientSignatureAlgorithms(SSL_CONF_CTX *cctx, const char *value)
205 rv = SSL_set1_client_sigalgs_list(cctx->ssl, value);
206 /* NB: ctx == NULL performs syntax checking only */
208 rv = SSL_CTX_set1_client_sigalgs_list(cctx->ctx, value);
212 static int cmd_Groups(SSL_CONF_CTX *cctx, const char *value)
216 rv = SSL_set1_groups_list(cctx->ssl, value);
217 /* NB: ctx == NULL performs syntax checking only */
219 rv = SSL_CTX_set1_groups_list(cctx->ctx, value);
223 /* This is the old name for cmd_Groups - retained for backwards compatibility */
224 static int cmd_Curves(SSL_CONF_CTX *cctx, const char *value)
226 return cmd_Groups(cctx, value);
229 /* ECDH temporary parameters */
230 static int cmd_ECDHParameters(SSL_CONF_CTX *cctx, const char *value)
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))
239 if ((cctx->flags & SSL_CONF_FLAG_CMDLINE) &&
240 strcmp(value, "auto") == 0)
243 /* ECDHParameters accepts a single group name */
244 if (strstr(value, ":") != NULL)
248 rv = SSL_CTX_set1_groups_list(cctx->ctx, value);
250 rv = SSL_set1_groups_list(cctx->ssl, value);
255 static int cmd_CipherString(SSL_CONF_CTX *cctx, const char *value)
260 rv = SSL_CTX_set_cipher_list(cctx->ctx, value);
262 rv = SSL_set_cipher_list(cctx->ssl, value);
266 static int cmd_Ciphersuites(SSL_CONF_CTX *cctx, const char *value)
271 rv = SSL_CTX_set_ciphersuites(cctx->ctx, value);
273 rv = SSL_set_ciphersuites(cctx->ssl, value);
277 static int cmd_Protocol(SSL_CONF_CTX *cctx, const char *value)
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)
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);
296 * protocol_from_string - converts a protocol version string to a number
298 * Returns -1 on failure or the version on success
300 static int protocol_from_string(const char *value)
302 struct protocol_versions {
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
313 static const struct protocol_versions versions[] = {
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}
324 size_t n = OSSL_NELEM(versions);
326 for (i = 0; i < n; i++)
327 if (strcmp(versions[i].name, value) == 0)
328 return versions[i].version;
332 static int min_max_proto(SSL_CONF_CTX *cctx, const char *value, int *bound)
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;
343 if ((new_version = protocol_from_string(value)) < 0)
345 return ssl_set_version_bound(method_version, new_version, bound);
349 * cmd_MinProtocol - Set min protocol version
350 * @cctx: config structure to save settings in
351 * @value: The min protocol version in string form
353 * Returns 1 on success and 0 on failure.
355 static int cmd_MinProtocol(SSL_CONF_CTX *cctx, const char *value)
357 return min_max_proto(cctx, value, cctx->min_version);
361 * cmd_MaxProtocol - Set max protocol version
362 * @cctx: config structure to save settings in
363 * @value: The max protocol version in string form
365 * Returns 1 on success and 0 on failure.
367 static int cmd_MaxProtocol(SSL_CONF_CTX *cctx, const char *value)
369 return min_max_proto(cctx, value, cctx->max_version);
372 static int cmd_Options(SSL_CONF_CTX *cctx, const char *value)
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)
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);
408 static int cmd_VerifyMode(SSL_CONF_CTX *cctx, const char *value)
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),
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);
429 static int cmd_Certificate(SSL_CONF_CTX *cctx, const char *value)
434 rv = SSL_CTX_use_certificate_chain_file(cctx->ctx, value);
438 rv = SSL_use_certificate_chain_file(cctx->ssl, value);
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)
452 static int cmd_PrivateKey(SSL_CONF_CTX *cctx, const char *value)
455 if (!(cctx->flags & SSL_CONF_FLAG_CERTIFICATE))
458 rv = SSL_CTX_use_PrivateKey_file(cctx->ctx, value, SSL_FILETYPE_PEM);
460 rv = SSL_use_PrivateKey_file(cctx->ssl, value, SSL_FILETYPE_PEM);
464 static int cmd_ServerInfoFile(SSL_CONF_CTX *cctx, const char *value)
468 rv = SSL_CTX_use_serverinfo_file(cctx->ctx, value);
472 static int do_store(SSL_CONF_CTX *cctx,
473 const char *CAfile, const char *CApath, const char *CAstore,
479 OSSL_LIB_CTX *libctx = NULL;
480 const char *propq = NULL;
482 if (cctx->ctx != NULL) {
483 cert = cctx->ctx->cert;
485 } else if (cctx->ssl != NULL) {
486 cert = cctx->ssl->cert;
487 ctx = cctx->ssl->ctx;
492 libctx = ctx->libctx;
495 st = verify_store ? &cert->verify_store : &cert->chain_store;
497 *st = X509_STORE_new();
502 if (CAfile != NULL && !X509_STORE_load_file_ex(*st, CAfile, libctx, propq))
504 if (CApath != NULL && !X509_STORE_load_path(*st, CApath))
506 if (CAstore != NULL && !X509_STORE_load_store_ex(*st, CAstore, libctx,
512 static int cmd_ChainCAPath(SSL_CONF_CTX *cctx, const char *value)
514 return do_store(cctx, NULL, value, NULL, 0);
517 static int cmd_ChainCAFile(SSL_CONF_CTX *cctx, const char *value)
519 return do_store(cctx, value, NULL, NULL, 0);
522 static int cmd_ChainCAStore(SSL_CONF_CTX *cctx, const char *value)
524 return do_store(cctx, NULL, NULL, value, 0);
527 static int cmd_VerifyCAPath(SSL_CONF_CTX *cctx, const char *value)
529 return do_store(cctx, NULL, value, NULL, 1);
532 static int cmd_VerifyCAFile(SSL_CONF_CTX *cctx, const char *value)
534 return do_store(cctx, value, NULL, NULL, 1);
537 static int cmd_VerifyCAStore(SSL_CONF_CTX *cctx, const char *value)
539 return do_store(cctx, NULL, NULL, value, 1);
542 static int cmd_RequestCAFile(SSL_CONF_CTX *cctx, const char *value)
544 if (cctx->canames == NULL)
545 cctx->canames = sk_X509_NAME_new_null();
546 if (cctx->canames == NULL)
548 return SSL_add_file_cert_subjects_to_stack(cctx->canames, value);
551 static int cmd_ClientCAFile(SSL_CONF_CTX *cctx, const char *value)
553 return cmd_RequestCAFile(cctx, value);
556 static int cmd_RequestCAPath(SSL_CONF_CTX *cctx, const char *value)
558 if (cctx->canames == NULL)
559 cctx->canames = sk_X509_NAME_new_null();
560 if (cctx->canames == NULL)
562 return SSL_add_dir_cert_subjects_to_stack(cctx->canames, value);
565 static int cmd_ClientCAPath(SSL_CONF_CTX *cctx, const char *value)
567 return cmd_RequestCAPath(cctx, value);
570 static int cmd_RequestCAStore(SSL_CONF_CTX *cctx, const char *value)
572 if (cctx->canames == NULL)
573 cctx->canames = sk_X509_NAME_new_null();
574 if (cctx->canames == NULL)
576 return SSL_add_store_cert_subjects_to_stack(cctx->canames, value);
579 static int cmd_ClientCAStore(SSL_CONF_CTX *cctx, const char *value)
581 return cmd_RequestCAStore(cctx, value);
584 static int cmd_DHParameters(SSL_CONF_CTX *cctx, const char *value)
587 EVP_PKEY *dhpkey = NULL;
589 SSL_CTX *sslctx = (cctx->ssl != NULL) ? cctx->ssl->ctx : cctx->ctx;
590 OSSL_DECODER_CTX *decoderctx = NULL;
592 if (cctx->ctx != NULL || cctx->ssl != NULL) {
593 in = BIO_new(BIO_s_file());
596 if (BIO_read_filename(in, value) <= 0)
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)
606 while (!OSSL_DECODER_from_bio(decoderctx, in)
609 OSSL_DECODER_CTX_free(decoderctx);
611 if (dhpkey == NULL) {
612 ERR_clear_last_mark();
620 if (cctx->ctx != NULL) {
621 if ((rv = SSL_CTX_set0_tmp_dh_pkey(cctx->ctx, dhpkey)) > 0)
624 if (cctx->ssl != NULL) {
625 if ((rv = SSL_set0_tmp_dh_pkey(cctx->ssl, dhpkey)) > 0)
629 EVP_PKEY_free(dhpkey);
634 static int cmd_RecordPadding(SSL_CONF_CTX *cctx, const char *value)
637 int block_size = atoi(value);
640 * All we care about is a non-negative value,
641 * the setters check the range
643 if (block_size >= 0) {
645 rv = SSL_CTX_set_block_padding(cctx->ctx, block_size);
647 rv = SSL_set_block_padding(cctx->ssl, block_size);
653 static int cmd_NumTickets(SSL_CONF_CTX *cctx, const char *value)
656 int num_tickets = atoi(value);
658 if (num_tickets >= 0) {
660 rv = SSL_CTX_set_num_tickets(cctx->ctx, num_tickets);
662 rv = SSL_set_num_tickets(cctx->ssl, num_tickets);
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;
675 /* Table of supported parameters */
677 #define SSL_CONF_CMD(name, cmdopt, flags, type) \
678 {cmd_##name, #name, cmdopt, flags, type}
680 #define SSL_CONF_CMD_STRING(name, cmdopt, flags) \
681 SSL_CONF_CMD(name, cmdopt, flags, SSL_CONF_TYPE_STRING)
683 #define SSL_CONF_CMD_SWITCH(name, flags) \
684 {0, NULL, name, flags, SSL_CONF_TYPE_NONE}
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 */
688 static 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_SWITCH("no_ems", 0),
714 SSL_CONF_CMD_STRING(SignatureAlgorithms, "sigalgs", 0),
715 SSL_CONF_CMD_STRING(ClientSignatureAlgorithms, "client_sigalgs", 0),
716 SSL_CONF_CMD_STRING(Curves, "curves", 0),
717 SSL_CONF_CMD_STRING(Groups, "groups", 0),
718 SSL_CONF_CMD_STRING(ECDHParameters, "named_curve", SSL_CONF_FLAG_SERVER),
719 SSL_CONF_CMD_STRING(CipherString, "cipher", 0),
720 SSL_CONF_CMD_STRING(Ciphersuites, "ciphersuites", 0),
721 SSL_CONF_CMD_STRING(Protocol, NULL, 0),
722 SSL_CONF_CMD_STRING(MinProtocol, "min_protocol", 0),
723 SSL_CONF_CMD_STRING(MaxProtocol, "max_protocol", 0),
724 SSL_CONF_CMD_STRING(Options, NULL, 0),
725 SSL_CONF_CMD_STRING(VerifyMode, NULL, 0),
726 SSL_CONF_CMD(Certificate, "cert", SSL_CONF_FLAG_CERTIFICATE,
728 SSL_CONF_CMD(PrivateKey, "key", SSL_CONF_FLAG_CERTIFICATE,
730 SSL_CONF_CMD(ServerInfoFile, NULL,
731 SSL_CONF_FLAG_SERVER | SSL_CONF_FLAG_CERTIFICATE,
733 SSL_CONF_CMD(ChainCAPath, "chainCApath", SSL_CONF_FLAG_CERTIFICATE,
735 SSL_CONF_CMD(ChainCAFile, "chainCAfile", SSL_CONF_FLAG_CERTIFICATE,
737 SSL_CONF_CMD(ChainCAStore, "chainCAstore", SSL_CONF_FLAG_CERTIFICATE,
738 SSL_CONF_TYPE_STORE),
739 SSL_CONF_CMD(VerifyCAPath, "verifyCApath", SSL_CONF_FLAG_CERTIFICATE,
741 SSL_CONF_CMD(VerifyCAFile, "verifyCAfile", SSL_CONF_FLAG_CERTIFICATE,
743 SSL_CONF_CMD(VerifyCAStore, "verifyCAstore", SSL_CONF_FLAG_CERTIFICATE,
744 SSL_CONF_TYPE_STORE),
745 SSL_CONF_CMD(RequestCAFile, "requestCAFile", SSL_CONF_FLAG_CERTIFICATE,
747 SSL_CONF_CMD(ClientCAFile, NULL,
748 SSL_CONF_FLAG_SERVER | SSL_CONF_FLAG_CERTIFICATE,
750 SSL_CONF_CMD(RequestCAPath, NULL, SSL_CONF_FLAG_CERTIFICATE,
752 SSL_CONF_CMD(ClientCAPath, NULL,
753 SSL_CONF_FLAG_SERVER | SSL_CONF_FLAG_CERTIFICATE,
755 SSL_CONF_CMD(RequestCAStore, "requestCAStore", SSL_CONF_FLAG_CERTIFICATE,
756 SSL_CONF_TYPE_STORE),
757 SSL_CONF_CMD(ClientCAStore, NULL,
758 SSL_CONF_FLAG_SERVER | SSL_CONF_FLAG_CERTIFICATE,
759 SSL_CONF_TYPE_STORE),
760 SSL_CONF_CMD(DHParameters, "dhparam",
761 SSL_CONF_FLAG_SERVER | SSL_CONF_FLAG_CERTIFICATE,
763 SSL_CONF_CMD_STRING(RecordPadding, "record_padding", 0),
764 SSL_CONF_CMD_STRING(NumTickets, "num_tickets", SSL_CONF_FLAG_SERVER),
767 /* Supported switches: must match order of switches in ssl_conf_cmds */
768 static const ssl_switch_tbl ssl_cmd_switches[] = {
769 {SSL_OP_NO_SSLv3, 0}, /* no_ssl3 */
770 {SSL_OP_NO_TLSv1, 0}, /* no_tls1 */
771 {SSL_OP_NO_TLSv1_1, 0}, /* no_tls1_1 */
772 {SSL_OP_NO_TLSv1_2, 0}, /* no_tls1_2 */
773 {SSL_OP_NO_TLSv1_3, 0}, /* no_tls1_3 */
774 {SSL_OP_ALL, 0}, /* bugs */
775 {SSL_OP_NO_COMPRESSION, 0}, /* no_comp */
776 {SSL_OP_NO_COMPRESSION, SSL_TFLAG_INV}, /* comp */
777 {SSL_OP_SINGLE_ECDH_USE, 0}, /* ecdh_single */
778 {SSL_OP_NO_TICKET, 0}, /* no_ticket */
779 {SSL_OP_CIPHER_SERVER_PREFERENCE, 0}, /* serverpref */
780 /* legacy_renegotiation */
781 {SSL_OP_ALLOW_UNSAFE_LEGACY_RENEGOTIATION, 0},
782 /* Allow client renegotiation */
783 {SSL_OP_ALLOW_CLIENT_RENEGOTIATION, 0},
784 /* legacy_server_connect */
785 {SSL_OP_LEGACY_SERVER_CONNECT, 0},
786 /* no_renegotiation */
787 {SSL_OP_NO_RENEGOTIATION, 0},
788 /* no_resumption_on_reneg */
789 {SSL_OP_NO_SESSION_RESUMPTION_ON_RENEGOTIATION, 0},
790 /* no_legacy_server_connect */
791 {SSL_OP_LEGACY_SERVER_CONNECT, SSL_TFLAG_INV},
792 /* allow_no_dhe_kex */
793 {SSL_OP_ALLOW_NO_DHE_KEX, 0},
794 /* chacha reprioritization */
795 {SSL_OP_PRIORITIZE_CHACHA, 0},
796 {SSL_CERT_FLAG_TLS_STRICT, SSL_TFLAG_CERT}, /* strict */
798 {SSL_OP_ENABLE_MIDDLEBOX_COMPAT, SSL_TFLAG_INV},
800 {SSL_OP_NO_ANTI_REPLAY, SSL_TFLAG_INV},
802 {SSL_OP_NO_ANTI_REPLAY, 0},
803 /* no Encrypt-then-Mac */
804 {SSL_OP_NO_ENCRYPT_THEN_MAC, 0},
805 /* no Extended master secret */
806 {SSL_OP_NO_EXTENDED_MASTER_SECRET, 0},
809 static int ssl_conf_cmd_skip_prefix(SSL_CONF_CTX *cctx, const char **pcmd)
811 if (pcmd == NULL || *pcmd == NULL)
813 /* If a prefix is set, check and skip */
815 if (strlen(*pcmd) <= cctx->prefixlen)
817 if (cctx->flags & SSL_CONF_FLAG_CMDLINE &&
818 strncmp(*pcmd, cctx->prefix, cctx->prefixlen))
820 if (cctx->flags & SSL_CONF_FLAG_FILE &&
821 OPENSSL_strncasecmp(*pcmd, cctx->prefix, cctx->prefixlen))
823 *pcmd += cctx->prefixlen;
824 } else if (cctx->flags & SSL_CONF_FLAG_CMDLINE) {
825 if (**pcmd != '-' || !(*pcmd)[1])
832 /* Determine if a command is allowed according to cctx flags */
833 static int ssl_conf_cmd_allowed(SSL_CONF_CTX *cctx, const ssl_conf_cmd_tbl * t)
835 unsigned int tfl = t->flags;
836 unsigned int cfl = cctx->flags;
837 if ((tfl & SSL_CONF_FLAG_SERVER) && !(cfl & SSL_CONF_FLAG_SERVER))
839 if ((tfl & SSL_CONF_FLAG_CLIENT) && !(cfl & SSL_CONF_FLAG_CLIENT))
841 if ((tfl & SSL_CONF_FLAG_CERTIFICATE)
842 && !(cfl & SSL_CONF_FLAG_CERTIFICATE))
847 static const ssl_conf_cmd_tbl *ssl_conf_cmd_lookup(SSL_CONF_CTX *cctx,
850 const ssl_conf_cmd_tbl *t;
855 /* Look for matching parameter name in table */
856 for (i = 0, t = ssl_conf_cmds; i < OSSL_NELEM(ssl_conf_cmds); i++, t++) {
857 if (ssl_conf_cmd_allowed(cctx, t)) {
858 if (cctx->flags & SSL_CONF_FLAG_CMDLINE) {
859 if (t->str_cmdline && strcmp(t->str_cmdline, cmd) == 0)
862 if (cctx->flags & SSL_CONF_FLAG_FILE) {
863 if (t->str_file && OPENSSL_strcasecmp(t->str_file, cmd) == 0)
871 static int ctrl_switch_option(SSL_CONF_CTX *cctx, const ssl_conf_cmd_tbl * cmd)
873 /* Find index of command in table */
874 size_t idx = cmd - ssl_conf_cmds;
875 const ssl_switch_tbl *scmd;
876 /* Sanity check index */
877 if (idx >= OSSL_NELEM(ssl_cmd_switches))
879 /* Obtain switches entry with same index */
880 scmd = ssl_cmd_switches + idx;
881 ssl_set_option(cctx, scmd->name_flags, scmd->option_value, 1);
885 int SSL_CONF_cmd(SSL_CONF_CTX *cctx, const char *cmd, const char *value)
887 const ssl_conf_cmd_tbl *runcmd;
889 ERR_raise(ERR_LIB_SSL, SSL_R_INVALID_NULL_CMD_NAME);
893 if (!ssl_conf_cmd_skip_prefix(cctx, &cmd))
896 runcmd = ssl_conf_cmd_lookup(cctx, cmd);
900 if (runcmd->value_type == SSL_CONF_TYPE_NONE) {
901 return ctrl_switch_option(cctx, runcmd);
905 rv = runcmd->cmd(cctx, value);
910 if (cctx->flags & SSL_CONF_FLAG_SHOW_ERRORS)
911 ERR_raise_data(ERR_LIB_SSL, SSL_R_BAD_VALUE,
912 "cmd=%s, value=%s", cmd, value);
916 if (cctx->flags & SSL_CONF_FLAG_SHOW_ERRORS)
917 ERR_raise_data(ERR_LIB_SSL, SSL_R_UNKNOWN_CMD_NAME, "cmd=%s", cmd);
922 int SSL_CONF_cmd_argv(SSL_CONF_CTX *cctx, int *pargc, char ***pargv)
925 const char *arg = NULL, *argn;
927 if (pargc != NULL && *pargc == 0)
929 if (pargc == NULL || *pargc > 0)
933 if (pargc == NULL || *pargc > 1)
937 cctx->flags &= ~SSL_CONF_FLAG_FILE;
938 cctx->flags |= SSL_CONF_FLAG_CMDLINE;
939 rv = SSL_CONF_cmd(cctx, arg, argn);
941 /* Success: update pargc, pargv */
947 /* Unknown switch: indicate no arguments processed */
950 /* Some error occurred processing command, return fatal error */
956 int SSL_CONF_cmd_value_type(SSL_CONF_CTX *cctx, const char *cmd)
958 if (ssl_conf_cmd_skip_prefix(cctx, &cmd)) {
959 const ssl_conf_cmd_tbl *runcmd;
960 runcmd = ssl_conf_cmd_lookup(cctx, cmd);
962 return runcmd->value_type;
964 return SSL_CONF_TYPE_UNKNOWN;
967 SSL_CONF_CTX *SSL_CONF_CTX_new(void)
969 SSL_CONF_CTX *ret = OPENSSL_zalloc(sizeof(*ret));
974 int SSL_CONF_CTX_finish(SSL_CONF_CTX *cctx)
976 /* See if any certificates are missing private keys */
983 if (c && cctx->flags & SSL_CONF_FLAG_REQUIRE_PRIVATE) {
984 for (i = 0; i < SSL_PKEY_NUM; i++) {
985 const char *p = cctx->cert_filename[i];
987 * If missing private key try to load one from certificate file
989 if (p && !c->pkeys[i].privatekey) {
990 if (!cmd_PrivateKey(cctx, p))
997 SSL_set0_CA_list(cctx->ssl, cctx->canames);
999 SSL_CTX_set0_CA_list(cctx->ctx, cctx->canames);
1001 sk_X509_NAME_pop_free(cctx->canames, X509_NAME_free);
1002 cctx->canames = NULL;
1007 void SSL_CONF_CTX_free(SSL_CONF_CTX *cctx)
1011 for (i = 0; i < SSL_PKEY_NUM; i++)
1012 OPENSSL_free(cctx->cert_filename[i]);
1013 OPENSSL_free(cctx->prefix);
1014 sk_X509_NAME_pop_free(cctx->canames, X509_NAME_free);
1019 unsigned int SSL_CONF_CTX_set_flags(SSL_CONF_CTX *cctx, unsigned int flags)
1021 cctx->flags |= flags;
1025 unsigned int SSL_CONF_CTX_clear_flags(SSL_CONF_CTX *cctx, unsigned int flags)
1027 cctx->flags &= ~flags;
1031 int SSL_CONF_CTX_set1_prefix(SSL_CONF_CTX *cctx, const char *pre)
1035 tmp = OPENSSL_strdup(pre);
1039 OPENSSL_free(cctx->prefix);
1042 cctx->prefixlen = strlen(tmp);
1044 cctx->prefixlen = 0;
1048 void SSL_CONF_CTX_set_ssl(SSL_CONF_CTX *cctx, SSL *ssl)
1053 cctx->poptions = &ssl->options;
1054 cctx->min_version = &ssl->min_proto_version;
1055 cctx->max_version = &ssl->max_proto_version;
1056 cctx->pcert_flags = &ssl->cert->cert_flags;
1057 cctx->pvfy_flags = &ssl->verify_mode;
1059 cctx->poptions = NULL;
1060 cctx->min_version = NULL;
1061 cctx->max_version = NULL;
1062 cctx->pcert_flags = NULL;
1063 cctx->pvfy_flags = NULL;
1067 void SSL_CONF_CTX_set_ssl_ctx(SSL_CONF_CTX *cctx, SSL_CTX *ctx)
1072 cctx->poptions = &ctx->options;
1073 cctx->min_version = &ctx->min_proto_version;
1074 cctx->max_version = &ctx->max_proto_version;
1075 cctx->pcert_flags = &ctx->cert->cert_flags;
1076 cctx->pvfy_flags = &ctx->verify_mode;
1078 cctx->poptions = NULL;
1079 cctx->min_version = NULL;
1080 cctx->max_version = NULL;
1081 cctx->pcert_flags = NULL;
1082 cctx->pvfy_flags = NULL;