2 * Copyright 2012-2020 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/dh.h>
15 #include "internal/nelem.h"
18 * structure holding name tables. This is used for permitted elements in lists
25 unsigned int name_flags;
26 unsigned long option_value;
29 /* Switch table: use for single command line switches like no_tls2 */
31 unsigned long option_value;
32 unsigned int name_flags;
35 /* Sense of name is inverted e.g. "TLSv1" will clear SSL_OP_NO_TLSv1 */
36 #define SSL_TFLAG_INV 0x1
37 /* Mask for type of flag referred to */
38 #define SSL_TFLAG_TYPE_MASK 0xf00
39 /* Flag is for options */
40 #define SSL_TFLAG_OPTION 0x000
41 /* Flag is for cert_flags */
42 #define SSL_TFLAG_CERT 0x100
43 /* Flag is for verify mode */
44 #define SSL_TFLAG_VFY 0x200
45 /* Option can only be used for clients */
46 #define SSL_TFLAG_CLIENT SSL_CONF_FLAG_CLIENT
47 /* Option can only be used for servers */
48 #define SSL_TFLAG_SERVER SSL_CONF_FLAG_SERVER
49 #define SSL_TFLAG_BOTH (SSL_TFLAG_CLIENT|SSL_TFLAG_SERVER)
51 #define SSL_FLAG_TBL(str, flag) \
52 {str, (int)(sizeof(str) - 1), SSL_TFLAG_BOTH, flag}
53 #define SSL_FLAG_TBL_SRV(str, flag) \
54 {str, (int)(sizeof(str) - 1), SSL_TFLAG_SERVER, flag}
55 #define SSL_FLAG_TBL_CLI(str, flag) \
56 {str, (int)(sizeof(str) - 1), SSL_TFLAG_CLIENT, flag}
57 #define SSL_FLAG_TBL_INV(str, flag) \
58 {str, (int)(sizeof(str) - 1), SSL_TFLAG_INV|SSL_TFLAG_BOTH, flag}
59 #define SSL_FLAG_TBL_SRV_INV(str, flag) \
60 {str, (int)(sizeof(str) - 1), SSL_TFLAG_INV|SSL_TFLAG_SERVER, flag}
61 #define SSL_FLAG_TBL_CERT(str, flag) \
62 {str, (int)(sizeof(str) - 1), SSL_TFLAG_CERT|SSL_TFLAG_BOTH, flag}
64 #define SSL_FLAG_VFY_CLI(str, flag) \
65 {str, (int)(sizeof(str) - 1), SSL_TFLAG_VFY | SSL_TFLAG_CLIENT, flag}
66 #define SSL_FLAG_VFY_SRV(str, flag) \
67 {str, (int)(sizeof(str) - 1), SSL_TFLAG_VFY | SSL_TFLAG_SERVER, flag}
70 * Opaque structure containing SSL configuration context.
73 struct ssl_conf_ctx_st {
75 * Various flags indicating (among other things) which options we will
79 /* Prefix and length of commands */
82 /* SSL_CTX or SSL structure to perform operations on */
85 /* Pointer to SSL or SSL_CTX options field or NULL if none */
87 /* Certificate filenames for each type */
88 char *cert_filename[SSL_PKEY_NUM];
89 /* Pointer to SSL or SSL_CTX cert_flags or NULL if none */
90 uint32_t *pcert_flags;
91 /* Pointer to SSL or SSL_CTX verify_mode or NULL if none */
93 /* Pointer to SSL or SSL_CTX min_version field or NULL if none */
95 /* Pointer to SSL or SSL_CTX max_version field or NULL if none */
97 /* Current flag table being worked on */
98 const ssl_flag_tbl *tbl;
101 /* Client CA names */
102 STACK_OF(X509_NAME) *canames;
105 static void ssl_set_option(SSL_CONF_CTX *cctx, unsigned int name_flags,
106 unsigned long option_value, int onoff)
109 if (cctx->poptions == NULL)
111 if (name_flags & SSL_TFLAG_INV)
113 switch (name_flags & SSL_TFLAG_TYPE_MASK) {
116 pflags = cctx->pcert_flags;
120 pflags = cctx->pvfy_flags;
123 case SSL_TFLAG_OPTION:
124 pflags = cctx->poptions;
132 *pflags |= option_value;
134 *pflags &= ~option_value;
137 static int ssl_match_option(SSL_CONF_CTX *cctx, const ssl_flag_tbl *tbl,
138 const char *name, int namelen, int onoff)
140 /* If name not relevant for context skip */
141 if (!(cctx->flags & tbl->name_flags & SSL_TFLAG_BOTH))
144 if (strcmp(tbl->name, name))
146 } else if (tbl->namelen != namelen || strncasecmp(tbl->name, name, namelen))
148 ssl_set_option(cctx, tbl->name_flags, tbl->option_value, onoff);
152 static int ssl_set_option_list(const char *elem, int len, void *usr)
154 SSL_CONF_CTX *cctx = usr;
156 const ssl_flag_tbl *tbl;
159 * len == -1 indicates not being called in list context, just for single
160 * command line switches, so don't allow +, -.
169 } else if (*elem == '-') {
175 for (i = 0, tbl = cctx->tbl; i < cctx->ntbl; i++, tbl++) {
176 if (ssl_match_option(cctx, tbl, elem, len, onoff))
182 /* Set supported signature algorithms */
183 static int cmd_SignatureAlgorithms(SSL_CONF_CTX *cctx, const char *value)
187 rv = SSL_set1_sigalgs_list(cctx->ssl, value);
188 /* NB: ctx == NULL performs syntax checking only */
190 rv = SSL_CTX_set1_sigalgs_list(cctx->ctx, value);
194 /* Set supported client signature algorithms */
195 static int cmd_ClientSignatureAlgorithms(SSL_CONF_CTX *cctx, const char *value)
199 rv = SSL_set1_client_sigalgs_list(cctx->ssl, value);
200 /* NB: ctx == NULL performs syntax checking only */
202 rv = SSL_CTX_set1_client_sigalgs_list(cctx->ctx, value);
206 static int cmd_Groups(SSL_CONF_CTX *cctx, const char *value)
210 rv = SSL_set1_groups_list(cctx->ssl, value);
211 /* NB: ctx == NULL performs syntax checking only */
213 rv = SSL_CTX_set1_groups_list(cctx->ctx, value);
217 /* This is the old name for cmd_Groups - retained for backwards compatibility */
218 static int cmd_Curves(SSL_CONF_CTX *cctx, const char *value)
220 return cmd_Groups(cctx, value);
223 #ifndef OPENSSL_NO_EC
224 /* ECDH temporary parameters */
225 static int cmd_ECDHParameters(SSL_CONF_CTX *cctx, const char *value)
230 /* Ignore values supported by 1.0.2 for the automatic selection */
231 if ((cctx->flags & SSL_CONF_FLAG_FILE)
232 && (strcasecmp(value, "+automatic") == 0
233 || strcasecmp(value, "automatic") == 0))
235 if ((cctx->flags & SSL_CONF_FLAG_CMDLINE) &&
236 strcmp(value, "auto") == 0)
239 nid = EC_curve_nist2nid(value);
240 if (nid == NID_undef)
241 nid = OBJ_sn2nid(value);
246 rv = SSL_CTX_set1_groups(cctx->ctx, &nid, 1);
248 rv = SSL_set1_groups(cctx->ssl, &nid, 1);
253 static int cmd_CipherString(SSL_CONF_CTX *cctx, const char *value)
258 rv = SSL_CTX_set_cipher_list(cctx->ctx, value);
260 rv = SSL_set_cipher_list(cctx->ssl, value);
264 static int cmd_Ciphersuites(SSL_CONF_CTX *cctx, const char *value)
269 rv = SSL_CTX_set_ciphersuites(cctx->ctx, value);
271 rv = SSL_set_ciphersuites(cctx->ssl, value);
275 static int cmd_Protocol(SSL_CONF_CTX *cctx, const char *value)
277 static const ssl_flag_tbl ssl_protocol_list[] = {
278 SSL_FLAG_TBL_INV("ALL", SSL_OP_NO_SSL_MASK),
279 SSL_FLAG_TBL_INV("SSLv2", SSL_OP_NO_SSLv2),
280 SSL_FLAG_TBL_INV("SSLv3", SSL_OP_NO_SSLv3),
281 SSL_FLAG_TBL_INV("TLSv1", SSL_OP_NO_TLSv1),
282 SSL_FLAG_TBL_INV("TLSv1.1", SSL_OP_NO_TLSv1_1),
283 SSL_FLAG_TBL_INV("TLSv1.2", SSL_OP_NO_TLSv1_2),
284 SSL_FLAG_TBL_INV("TLSv1.3", SSL_OP_NO_TLSv1_3),
285 SSL_FLAG_TBL_INV("DTLSv1", SSL_OP_NO_DTLSv1),
286 SSL_FLAG_TBL_INV("DTLSv1.2", SSL_OP_NO_DTLSv1_2)
288 cctx->tbl = ssl_protocol_list;
289 cctx->ntbl = OSSL_NELEM(ssl_protocol_list);
290 return CONF_parse_list(value, ',', 1, ssl_set_option_list, cctx);
294 * protocol_from_string - converts a protocol version string to a number
296 * Returns -1 on failure or the version on success
298 static int protocol_from_string(const char *value)
300 struct protocol_versions {
305 * Note: To avoid breaking previously valid configurations, we must retain
306 * legacy entries in this table even if the underlying protocol is no
307 * longer supported. This also means that the constants SSL3_VERSION, ...
308 * need to be retained indefinitely. This table can only grow, never
311 static const struct protocol_versions versions[] = {
313 {"SSLv3", SSL3_VERSION},
314 {"TLSv1", TLS1_VERSION},
315 {"TLSv1.1", TLS1_1_VERSION},
316 {"TLSv1.2", TLS1_2_VERSION},
317 {"TLSv1.3", TLS1_3_VERSION},
318 {"DTLSv1", DTLS1_VERSION},
319 {"DTLSv1.2", DTLS1_2_VERSION}
322 size_t n = OSSL_NELEM(versions);
324 for (i = 0; i < n; i++)
325 if (strcmp(versions[i].name, value) == 0)
326 return versions[i].version;
330 static int min_max_proto(SSL_CONF_CTX *cctx, const char *value, int *bound)
335 if (cctx->ctx != NULL)
336 method_version = cctx->ctx->method->version;
337 else if (cctx->ssl != NULL)
338 method_version = cctx->ssl->ctx->method->version;
341 if ((new_version = protocol_from_string(value)) < 0)
343 return ssl_set_version_bound(method_version, new_version, bound);
347 * cmd_MinProtocol - Set min protocol version
348 * @cctx: config structure to save settings in
349 * @value: The min protocol version in string form
351 * Returns 1 on success and 0 on failure.
353 static int cmd_MinProtocol(SSL_CONF_CTX *cctx, const char *value)
355 return min_max_proto(cctx, value, cctx->min_version);
359 * cmd_MaxProtocol - Set max protocol version
360 * @cctx: config structure to save settings in
361 * @value: The max protocol version in string form
363 * Returns 1 on success and 0 on failure.
365 static int cmd_MaxProtocol(SSL_CONF_CTX *cctx, const char *value)
367 return min_max_proto(cctx, value, cctx->max_version);
370 static int cmd_Options(SSL_CONF_CTX *cctx, const char *value)
372 static const ssl_flag_tbl ssl_option_list[] = {
373 SSL_FLAG_TBL_INV("SessionTicket", SSL_OP_NO_TICKET),
374 SSL_FLAG_TBL_INV("EmptyFragments",
375 SSL_OP_DONT_INSERT_EMPTY_FRAGMENTS),
376 SSL_FLAG_TBL("Bugs", SSL_OP_ALL),
377 SSL_FLAG_TBL_INV("Compression", SSL_OP_NO_COMPRESSION),
378 SSL_FLAG_TBL_SRV("ServerPreference", SSL_OP_CIPHER_SERVER_PREFERENCE),
379 SSL_FLAG_TBL_SRV("NoResumptionOnRenegotiation",
380 SSL_OP_NO_SESSION_RESUMPTION_ON_RENEGOTIATION),
381 SSL_FLAG_TBL_SRV("DHSingle", SSL_OP_SINGLE_DH_USE),
382 SSL_FLAG_TBL_SRV("ECDHSingle", SSL_OP_SINGLE_ECDH_USE),
383 SSL_FLAG_TBL("UnsafeLegacyRenegotiation",
384 SSL_OP_ALLOW_UNSAFE_LEGACY_RENEGOTIATION),
385 SSL_FLAG_TBL_INV("EncryptThenMac", SSL_OP_NO_ENCRYPT_THEN_MAC),
386 SSL_FLAG_TBL("NoRenegotiation", SSL_OP_NO_RENEGOTIATION),
387 SSL_FLAG_TBL("AllowNoDHEKEX", SSL_OP_ALLOW_NO_DHE_KEX),
388 SSL_FLAG_TBL("PrioritizeChaCha", SSL_OP_PRIORITIZE_CHACHA),
389 SSL_FLAG_TBL("MiddleboxCompat", SSL_OP_ENABLE_MIDDLEBOX_COMPAT),
390 SSL_FLAG_TBL_INV("AntiReplay", SSL_OP_NO_ANTI_REPLAY),
391 SSL_FLAG_TBL_INV("ExtendedMasterSecret", SSL_OP_NO_EXTENDED_MASTER_SECRET),
392 SSL_FLAG_TBL_INV("CANames", SSL_OP_DISABLE_TLSEXT_CA_NAMES)
396 cctx->tbl = ssl_option_list;
397 cctx->ntbl = OSSL_NELEM(ssl_option_list);
398 return CONF_parse_list(value, ',', 1, ssl_set_option_list, cctx);
401 static int cmd_VerifyMode(SSL_CONF_CTX *cctx, const char *value)
403 static const ssl_flag_tbl ssl_vfy_list[] = {
404 SSL_FLAG_VFY_CLI("Peer", SSL_VERIFY_PEER),
405 SSL_FLAG_VFY_SRV("Request", SSL_VERIFY_PEER),
406 SSL_FLAG_VFY_SRV("Require",
407 SSL_VERIFY_PEER | SSL_VERIFY_FAIL_IF_NO_PEER_CERT),
408 SSL_FLAG_VFY_SRV("Once", SSL_VERIFY_PEER | SSL_VERIFY_CLIENT_ONCE),
409 SSL_FLAG_VFY_SRV("RequestPostHandshake",
410 SSL_VERIFY_PEER | SSL_VERIFY_POST_HANDSHAKE),
411 SSL_FLAG_VFY_SRV("RequirePostHandshake",
412 SSL_VERIFY_PEER | SSL_VERIFY_POST_HANDSHAKE |
413 SSL_VERIFY_FAIL_IF_NO_PEER_CERT),
417 cctx->tbl = ssl_vfy_list;
418 cctx->ntbl = OSSL_NELEM(ssl_vfy_list);
419 return CONF_parse_list(value, ',', 1, ssl_set_option_list, cctx);
422 static int cmd_Certificate(SSL_CONF_CTX *cctx, const char *value)
427 rv = SSL_CTX_use_certificate_chain_file(cctx->ctx, value);
431 rv = SSL_use_certificate_chain_file(cctx->ssl, value);
434 if (rv > 0 && c && cctx->flags & SSL_CONF_FLAG_REQUIRE_PRIVATE) {
435 char **pfilename = &cctx->cert_filename[c->key - c->pkeys];
436 OPENSSL_free(*pfilename);
437 *pfilename = OPENSSL_strdup(value);
438 if (*pfilename == NULL)
445 static int cmd_PrivateKey(SSL_CONF_CTX *cctx, const char *value)
448 if (!(cctx->flags & SSL_CONF_FLAG_CERTIFICATE))
451 rv = SSL_CTX_use_PrivateKey_file(cctx->ctx, value, SSL_FILETYPE_PEM);
453 rv = SSL_use_PrivateKey_file(cctx->ssl, value, SSL_FILETYPE_PEM);
457 static int cmd_ServerInfoFile(SSL_CONF_CTX *cctx, const char *value)
461 rv = SSL_CTX_use_serverinfo_file(cctx->ctx, value);
465 static int do_store(SSL_CONF_CTX *cctx,
466 const char *CAfile, const char *CApath, const char *CAstore,
472 OSSL_LIB_CTX *libctx = NULL;
473 const char *propq = NULL;
475 if (cctx->ctx != NULL) {
476 cert = cctx->ctx->cert;
478 } else if (cctx->ssl != NULL) {
479 cert = cctx->ssl->cert;
480 ctx = cctx->ssl->ctx;
485 libctx = ctx->libctx;
488 st = verify_store ? &cert->verify_store : &cert->chain_store;
490 *st = X509_STORE_new();
495 if (CAfile != NULL && !X509_STORE_load_file_ex(*st, CAfile, libctx, propq))
497 if (CApath != NULL && !X509_STORE_load_path(*st, CApath))
499 if (CAstore != NULL && !X509_STORE_load_store_ex(*st, CAstore, libctx,
505 static int cmd_ChainCAPath(SSL_CONF_CTX *cctx, const char *value)
507 return do_store(cctx, NULL, value, NULL, 0);
510 static int cmd_ChainCAFile(SSL_CONF_CTX *cctx, const char *value)
512 return do_store(cctx, value, NULL, NULL, 0);
515 static int cmd_ChainCAStore(SSL_CONF_CTX *cctx, const char *value)
517 return do_store(cctx, NULL, NULL, value, 0);
520 static int cmd_VerifyCAPath(SSL_CONF_CTX *cctx, const char *value)
522 return do_store(cctx, NULL, value, NULL, 1);
525 static int cmd_VerifyCAFile(SSL_CONF_CTX *cctx, const char *value)
527 return do_store(cctx, value, NULL, NULL, 1);
530 static int cmd_VerifyCAStore(SSL_CONF_CTX *cctx, const char *value)
532 return do_store(cctx, NULL, NULL, value, 1);
535 static int cmd_RequestCAFile(SSL_CONF_CTX *cctx, const char *value)
537 if (cctx->canames == NULL)
538 cctx->canames = sk_X509_NAME_new_null();
539 if (cctx->canames == NULL)
541 return SSL_add_file_cert_subjects_to_stack(cctx->canames, value);
544 static int cmd_ClientCAFile(SSL_CONF_CTX *cctx, const char *value)
546 return cmd_RequestCAFile(cctx, value);
549 static int cmd_RequestCAPath(SSL_CONF_CTX *cctx, const char *value)
551 if (cctx->canames == NULL)
552 cctx->canames = sk_X509_NAME_new_null();
553 if (cctx->canames == NULL)
555 return SSL_add_dir_cert_subjects_to_stack(cctx->canames, value);
558 static int cmd_ClientCAPath(SSL_CONF_CTX *cctx, const char *value)
560 return cmd_RequestCAPath(cctx, value);
563 static int cmd_RequestCAStore(SSL_CONF_CTX *cctx, const char *value)
565 if (cctx->canames == NULL)
566 cctx->canames = sk_X509_NAME_new_null();
567 if (cctx->canames == NULL)
569 return SSL_add_store_cert_subjects_to_stack(cctx->canames, value);
572 static int cmd_ClientCAStore(SSL_CONF_CTX *cctx, const char *value)
574 return cmd_RequestCAStore(cctx, value);
577 #ifndef OPENSSL_NO_DH
578 static int cmd_DHParameters(SSL_CONF_CTX *cctx, const char *value)
583 if (cctx->ctx || cctx->ssl) {
584 in = BIO_new(BIO_s_file());
587 if (BIO_read_filename(in, value) <= 0)
589 dh = PEM_read_bio_DHparams(in, NULL, NULL, NULL);
595 rv = SSL_CTX_set_tmp_dh(cctx->ctx, dh);
597 rv = SSL_set_tmp_dh(cctx->ssl, dh);
605 static int cmd_RecordPadding(SSL_CONF_CTX *cctx, const char *value)
608 int block_size = atoi(value);
611 * All we care about is a non-negative value,
612 * the setters check the range
614 if (block_size >= 0) {
616 rv = SSL_CTX_set_block_padding(cctx->ctx, block_size);
618 rv = SSL_set_block_padding(cctx->ssl, block_size);
624 static int cmd_NumTickets(SSL_CONF_CTX *cctx, const char *value)
627 int num_tickets = atoi(value);
629 if (num_tickets >= 0) {
631 rv = SSL_CTX_set_num_tickets(cctx->ctx, num_tickets);
633 rv = SSL_set_num_tickets(cctx->ssl, num_tickets);
639 int (*cmd) (SSL_CONF_CTX *cctx, const char *value);
640 const char *str_file;
641 const char *str_cmdline;
642 unsigned short flags;
643 unsigned short value_type;
646 /* Table of supported parameters */
648 #define SSL_CONF_CMD(name, cmdopt, flags, type) \
649 {cmd_##name, #name, cmdopt, flags, type}
651 #define SSL_CONF_CMD_STRING(name, cmdopt, flags) \
652 SSL_CONF_CMD(name, cmdopt, flags, SSL_CONF_TYPE_STRING)
654 #define SSL_CONF_CMD_SWITCH(name, flags) \
655 {0, NULL, name, flags, SSL_CONF_TYPE_NONE}
657 /* See apps/apps.h if you change this table. */
658 static const ssl_conf_cmd_tbl ssl_conf_cmds[] = {
659 SSL_CONF_CMD_SWITCH("no_ssl3", 0),
660 SSL_CONF_CMD_SWITCH("no_tls1", 0),
661 SSL_CONF_CMD_SWITCH("no_tls1_1", 0),
662 SSL_CONF_CMD_SWITCH("no_tls1_2", 0),
663 SSL_CONF_CMD_SWITCH("no_tls1_3", 0),
664 SSL_CONF_CMD_SWITCH("bugs", 0),
665 SSL_CONF_CMD_SWITCH("no_comp", 0),
666 SSL_CONF_CMD_SWITCH("comp", 0),
667 SSL_CONF_CMD_SWITCH("ecdh_single", SSL_CONF_FLAG_SERVER),
668 SSL_CONF_CMD_SWITCH("no_ticket", 0),
669 SSL_CONF_CMD_SWITCH("serverpref", SSL_CONF_FLAG_SERVER),
670 SSL_CONF_CMD_SWITCH("legacy_renegotiation", 0),
671 SSL_CONF_CMD_SWITCH("legacy_server_connect", SSL_CONF_FLAG_SERVER),
672 SSL_CONF_CMD_SWITCH("no_renegotiation", 0),
673 SSL_CONF_CMD_SWITCH("no_resumption_on_reneg", SSL_CONF_FLAG_SERVER),
674 SSL_CONF_CMD_SWITCH("no_legacy_server_connect", SSL_CONF_FLAG_SERVER),
675 SSL_CONF_CMD_SWITCH("allow_no_dhe_kex", 0),
676 SSL_CONF_CMD_SWITCH("prioritize_chacha", SSL_CONF_FLAG_SERVER),
677 SSL_CONF_CMD_SWITCH("strict", 0),
678 SSL_CONF_CMD_SWITCH("no_middlebox", 0),
679 SSL_CONF_CMD_SWITCH("anti_replay", SSL_CONF_FLAG_SERVER),
680 SSL_CONF_CMD_SWITCH("no_anti_replay", SSL_CONF_FLAG_SERVER),
681 SSL_CONF_CMD_STRING(SignatureAlgorithms, "sigalgs", 0),
682 SSL_CONF_CMD_STRING(ClientSignatureAlgorithms, "client_sigalgs", 0),
683 SSL_CONF_CMD_STRING(Curves, "curves", 0),
684 SSL_CONF_CMD_STRING(Groups, "groups", 0),
685 #ifndef OPENSSL_NO_EC
686 SSL_CONF_CMD_STRING(ECDHParameters, "named_curve", SSL_CONF_FLAG_SERVER),
688 SSL_CONF_CMD_STRING(CipherString, "cipher", 0),
689 SSL_CONF_CMD_STRING(Ciphersuites, "ciphersuites", 0),
690 SSL_CONF_CMD_STRING(Protocol, NULL, 0),
691 SSL_CONF_CMD_STRING(MinProtocol, "min_protocol", 0),
692 SSL_CONF_CMD_STRING(MaxProtocol, "max_protocol", 0),
693 SSL_CONF_CMD_STRING(Options, NULL, 0),
694 SSL_CONF_CMD_STRING(VerifyMode, NULL, 0),
695 SSL_CONF_CMD(Certificate, "cert", SSL_CONF_FLAG_CERTIFICATE,
697 SSL_CONF_CMD(PrivateKey, "key", SSL_CONF_FLAG_CERTIFICATE,
699 SSL_CONF_CMD(ServerInfoFile, NULL,
700 SSL_CONF_FLAG_SERVER | SSL_CONF_FLAG_CERTIFICATE,
702 SSL_CONF_CMD(ChainCAPath, "chainCApath", SSL_CONF_FLAG_CERTIFICATE,
704 SSL_CONF_CMD(ChainCAFile, "chainCAfile", SSL_CONF_FLAG_CERTIFICATE,
706 SSL_CONF_CMD(ChainCAStore, "chainCAstore", SSL_CONF_FLAG_CERTIFICATE,
707 SSL_CONF_TYPE_STORE),
708 SSL_CONF_CMD(VerifyCAPath, "verifyCApath", SSL_CONF_FLAG_CERTIFICATE,
710 SSL_CONF_CMD(VerifyCAFile, "verifyCAfile", SSL_CONF_FLAG_CERTIFICATE,
712 SSL_CONF_CMD(VerifyCAStore, "verifyCAstore", SSL_CONF_FLAG_CERTIFICATE,
713 SSL_CONF_TYPE_STORE),
714 SSL_CONF_CMD(RequestCAFile, "requestCAFile", SSL_CONF_FLAG_CERTIFICATE,
716 SSL_CONF_CMD(ClientCAFile, NULL,
717 SSL_CONF_FLAG_SERVER | SSL_CONF_FLAG_CERTIFICATE,
719 SSL_CONF_CMD(RequestCAPath, NULL, SSL_CONF_FLAG_CERTIFICATE,
721 SSL_CONF_CMD(ClientCAPath, NULL,
722 SSL_CONF_FLAG_SERVER | SSL_CONF_FLAG_CERTIFICATE,
724 SSL_CONF_CMD(RequestCAStore, "requestCAStore", SSL_CONF_FLAG_CERTIFICATE,
725 SSL_CONF_TYPE_STORE),
726 SSL_CONF_CMD(ClientCAStore, NULL,
727 SSL_CONF_FLAG_SERVER | SSL_CONF_FLAG_CERTIFICATE,
728 SSL_CONF_TYPE_STORE),
729 #ifndef OPENSSL_NO_DH
730 SSL_CONF_CMD(DHParameters, "dhparam",
731 SSL_CONF_FLAG_SERVER | SSL_CONF_FLAG_CERTIFICATE,
734 SSL_CONF_CMD_STRING(RecordPadding, "record_padding", 0),
735 SSL_CONF_CMD_STRING(NumTickets, "num_tickets", SSL_CONF_FLAG_SERVER),
738 /* Supported switches: must match order of switches in ssl_conf_cmds */
739 static const ssl_switch_tbl ssl_cmd_switches[] = {
740 {SSL_OP_NO_SSLv3, 0}, /* no_ssl3 */
741 {SSL_OP_NO_TLSv1, 0}, /* no_tls1 */
742 {SSL_OP_NO_TLSv1_1, 0}, /* no_tls1_1 */
743 {SSL_OP_NO_TLSv1_2, 0}, /* no_tls1_2 */
744 {SSL_OP_NO_TLSv1_3, 0}, /* no_tls1_3 */
745 {SSL_OP_ALL, 0}, /* bugs */
746 {SSL_OP_NO_COMPRESSION, 0}, /* no_comp */
747 {SSL_OP_NO_COMPRESSION, SSL_TFLAG_INV}, /* comp */
748 {SSL_OP_SINGLE_ECDH_USE, 0}, /* ecdh_single */
749 {SSL_OP_NO_TICKET, 0}, /* no_ticket */
750 {SSL_OP_CIPHER_SERVER_PREFERENCE, 0}, /* serverpref */
751 /* legacy_renegotiation */
752 {SSL_OP_ALLOW_UNSAFE_LEGACY_RENEGOTIATION, 0},
753 /* legacy_server_connect */
754 {SSL_OP_LEGACY_SERVER_CONNECT, 0},
755 /* no_renegotiation */
756 {SSL_OP_NO_RENEGOTIATION, 0},
757 /* no_resumption_on_reneg */
758 {SSL_OP_NO_SESSION_RESUMPTION_ON_RENEGOTIATION, 0},
759 /* no_legacy_server_connect */
760 {SSL_OP_LEGACY_SERVER_CONNECT, SSL_TFLAG_INV},
761 /* allow_no_dhe_kex */
762 {SSL_OP_ALLOW_NO_DHE_KEX, 0},
763 /* chacha reprioritization */
764 {SSL_OP_PRIORITIZE_CHACHA, 0},
765 {SSL_CERT_FLAG_TLS_STRICT, SSL_TFLAG_CERT}, /* strict */
767 {SSL_OP_ENABLE_MIDDLEBOX_COMPAT, SSL_TFLAG_INV},
769 {SSL_OP_NO_ANTI_REPLAY, SSL_TFLAG_INV},
771 {SSL_OP_NO_ANTI_REPLAY, 0},
774 static int ssl_conf_cmd_skip_prefix(SSL_CONF_CTX *cctx, const char **pcmd)
776 if (pcmd == NULL || *pcmd == NULL)
778 /* If a prefix is set, check and skip */
780 if (strlen(*pcmd) <= cctx->prefixlen)
782 if (cctx->flags & SSL_CONF_FLAG_CMDLINE &&
783 strncmp(*pcmd, cctx->prefix, cctx->prefixlen))
785 if (cctx->flags & SSL_CONF_FLAG_FILE &&
786 strncasecmp(*pcmd, cctx->prefix, cctx->prefixlen))
788 *pcmd += cctx->prefixlen;
789 } else if (cctx->flags & SSL_CONF_FLAG_CMDLINE) {
790 if (**pcmd != '-' || !(*pcmd)[1])
797 /* Determine if a command is allowed according to cctx flags */
798 static int ssl_conf_cmd_allowed(SSL_CONF_CTX *cctx, const ssl_conf_cmd_tbl * t)
800 unsigned int tfl = t->flags;
801 unsigned int cfl = cctx->flags;
802 if ((tfl & SSL_CONF_FLAG_SERVER) && !(cfl & SSL_CONF_FLAG_SERVER))
804 if ((tfl & SSL_CONF_FLAG_CLIENT) && !(cfl & SSL_CONF_FLAG_CLIENT))
806 if ((tfl & SSL_CONF_FLAG_CERTIFICATE)
807 && !(cfl & SSL_CONF_FLAG_CERTIFICATE))
812 static const ssl_conf_cmd_tbl *ssl_conf_cmd_lookup(SSL_CONF_CTX *cctx,
815 const ssl_conf_cmd_tbl *t;
820 /* Look for matching parameter name in table */
821 for (i = 0, t = ssl_conf_cmds; i < OSSL_NELEM(ssl_conf_cmds); i++, t++) {
822 if (ssl_conf_cmd_allowed(cctx, t)) {
823 if (cctx->flags & SSL_CONF_FLAG_CMDLINE) {
824 if (t->str_cmdline && strcmp(t->str_cmdline, cmd) == 0)
827 if (cctx->flags & SSL_CONF_FLAG_FILE) {
828 if (t->str_file && strcasecmp(t->str_file, cmd) == 0)
836 static int ctrl_switch_option(SSL_CONF_CTX *cctx, const ssl_conf_cmd_tbl * cmd)
838 /* Find index of command in table */
839 size_t idx = cmd - ssl_conf_cmds;
840 const ssl_switch_tbl *scmd;
841 /* Sanity check index */
842 if (idx >= OSSL_NELEM(ssl_cmd_switches))
844 /* Obtain switches entry with same index */
845 scmd = ssl_cmd_switches + idx;
846 ssl_set_option(cctx, scmd->name_flags, scmd->option_value, 1);
850 int SSL_CONF_cmd(SSL_CONF_CTX *cctx, const char *cmd, const char *value)
852 const ssl_conf_cmd_tbl *runcmd;
854 ERR_raise(ERR_LIB_SSL, SSL_R_INVALID_NULL_CMD_NAME);
858 if (!ssl_conf_cmd_skip_prefix(cctx, &cmd))
861 runcmd = ssl_conf_cmd_lookup(cctx, cmd);
865 if (runcmd->value_type == SSL_CONF_TYPE_NONE) {
866 return ctrl_switch_option(cctx, runcmd);
870 rv = runcmd->cmd(cctx, value);
875 if (cctx->flags & SSL_CONF_FLAG_SHOW_ERRORS) {
876 ERR_raise(ERR_LIB_SSL, SSL_R_BAD_VALUE);
877 ERR_add_error_data(4, "cmd=", cmd, ", value=", value);
882 if (cctx->flags & SSL_CONF_FLAG_SHOW_ERRORS) {
883 ERR_raise(ERR_LIB_SSL, SSL_R_UNKNOWN_CMD_NAME);
884 ERR_add_error_data(2, "cmd=", cmd);
890 int SSL_CONF_cmd_argv(SSL_CONF_CTX *cctx, int *pargc, char ***pargv)
893 const char *arg = NULL, *argn;
895 if (pargc != NULL && *pargc == 0)
897 if (pargc == NULL || *pargc > 0)
901 if (pargc == NULL || *pargc > 1)
905 cctx->flags &= ~SSL_CONF_FLAG_FILE;
906 cctx->flags |= SSL_CONF_FLAG_CMDLINE;
907 rv = SSL_CONF_cmd(cctx, arg, argn);
909 /* Success: update pargc, pargv */
915 /* Unknown switch: indicate no arguments processed */
918 /* Some error occurred processing command, return fatal error */
924 int SSL_CONF_cmd_value_type(SSL_CONF_CTX *cctx, const char *cmd)
926 if (ssl_conf_cmd_skip_prefix(cctx, &cmd)) {
927 const ssl_conf_cmd_tbl *runcmd;
928 runcmd = ssl_conf_cmd_lookup(cctx, cmd);
930 return runcmd->value_type;
932 return SSL_CONF_TYPE_UNKNOWN;
935 SSL_CONF_CTX *SSL_CONF_CTX_new(void)
937 SSL_CONF_CTX *ret = OPENSSL_zalloc(sizeof(*ret));
942 int SSL_CONF_CTX_finish(SSL_CONF_CTX *cctx)
944 /* See if any certificates are missing private keys */
951 if (c && cctx->flags & SSL_CONF_FLAG_REQUIRE_PRIVATE) {
952 for (i = 0; i < SSL_PKEY_NUM; i++) {
953 const char *p = cctx->cert_filename[i];
955 * If missing private key try to load one from certificate file
957 if (p && !c->pkeys[i].privatekey) {
958 if (!cmd_PrivateKey(cctx, p))
965 SSL_set0_CA_list(cctx->ssl, cctx->canames);
967 SSL_CTX_set0_CA_list(cctx->ctx, cctx->canames);
969 sk_X509_NAME_pop_free(cctx->canames, X509_NAME_free);
970 cctx->canames = NULL;
975 void SSL_CONF_CTX_free(SSL_CONF_CTX *cctx)
979 for (i = 0; i < SSL_PKEY_NUM; i++)
980 OPENSSL_free(cctx->cert_filename[i]);
981 OPENSSL_free(cctx->prefix);
982 sk_X509_NAME_pop_free(cctx->canames, X509_NAME_free);
987 unsigned int SSL_CONF_CTX_set_flags(SSL_CONF_CTX *cctx, unsigned int flags)
989 cctx->flags |= flags;
993 unsigned int SSL_CONF_CTX_clear_flags(SSL_CONF_CTX *cctx, unsigned int flags)
995 cctx->flags &= ~flags;
999 int SSL_CONF_CTX_set1_prefix(SSL_CONF_CTX *cctx, const char *pre)
1003 tmp = OPENSSL_strdup(pre);
1007 OPENSSL_free(cctx->prefix);
1010 cctx->prefixlen = strlen(tmp);
1012 cctx->prefixlen = 0;
1016 void SSL_CONF_CTX_set_ssl(SSL_CONF_CTX *cctx, SSL *ssl)
1021 cctx->poptions = &ssl->options;
1022 cctx->min_version = &ssl->min_proto_version;
1023 cctx->max_version = &ssl->max_proto_version;
1024 cctx->pcert_flags = &ssl->cert->cert_flags;
1025 cctx->pvfy_flags = &ssl->verify_mode;
1027 cctx->poptions = NULL;
1028 cctx->min_version = NULL;
1029 cctx->max_version = NULL;
1030 cctx->pcert_flags = NULL;
1031 cctx->pvfy_flags = NULL;
1035 void SSL_CONF_CTX_set_ssl_ctx(SSL_CONF_CTX *cctx, SSL_CTX *ctx)
1040 cctx->poptions = &ctx->options;
1041 cctx->min_version = &ctx->min_proto_version;
1042 cctx->max_version = &ctx->max_proto_version;
1043 cctx->pcert_flags = &ctx->cert->cert_flags;
1044 cctx->pvfy_flags = &ctx->verify_mode;
1046 cctx->poptions = NULL;
1047 cctx->min_version = NULL;
1048 cctx->max_version = NULL;
1049 cctx->pcert_flags = NULL;
1050 cctx->pvfy_flags = NULL;