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"
17 DEFINE_STACK_OF(X509_NAME)
20 * structure holding name tables. This is used for permitted elements in lists
27 unsigned int name_flags;
28 unsigned long option_value;
31 /* Switch table: use for single command line switches like no_tls2 */
33 unsigned long option_value;
34 unsigned int name_flags;
37 /* Sense of name is inverted e.g. "TLSv1" will clear SSL_OP_NO_TLSv1 */
38 #define SSL_TFLAG_INV 0x1
39 /* Mask for type of flag referred to */
40 #define SSL_TFLAG_TYPE_MASK 0xf00
41 /* Flag is for options */
42 #define SSL_TFLAG_OPTION 0x000
43 /* Flag is for cert_flags */
44 #define SSL_TFLAG_CERT 0x100
45 /* Flag is for verify mode */
46 #define SSL_TFLAG_VFY 0x200
47 /* Option can only be used for clients */
48 #define SSL_TFLAG_CLIENT SSL_CONF_FLAG_CLIENT
49 /* Option can only be used for servers */
50 #define SSL_TFLAG_SERVER SSL_CONF_FLAG_SERVER
51 #define SSL_TFLAG_BOTH (SSL_TFLAG_CLIENT|SSL_TFLAG_SERVER)
53 #define SSL_FLAG_TBL(str, flag) \
54 {str, (int)(sizeof(str) - 1), SSL_TFLAG_BOTH, flag}
55 #define SSL_FLAG_TBL_SRV(str, flag) \
56 {str, (int)(sizeof(str) - 1), SSL_TFLAG_SERVER, flag}
57 #define SSL_FLAG_TBL_CLI(str, flag) \
58 {str, (int)(sizeof(str) - 1), SSL_TFLAG_CLIENT, flag}
59 #define SSL_FLAG_TBL_INV(str, flag) \
60 {str, (int)(sizeof(str) - 1), SSL_TFLAG_INV|SSL_TFLAG_BOTH, flag}
61 #define SSL_FLAG_TBL_SRV_INV(str, flag) \
62 {str, (int)(sizeof(str) - 1), SSL_TFLAG_INV|SSL_TFLAG_SERVER, flag}
63 #define SSL_FLAG_TBL_CERT(str, flag) \
64 {str, (int)(sizeof(str) - 1), SSL_TFLAG_CERT|SSL_TFLAG_BOTH, flag}
66 #define SSL_FLAG_VFY_CLI(str, flag) \
67 {str, (int)(sizeof(str) - 1), SSL_TFLAG_VFY | SSL_TFLAG_CLIENT, flag}
68 #define SSL_FLAG_VFY_SRV(str, flag) \
69 {str, (int)(sizeof(str) - 1), SSL_TFLAG_VFY | SSL_TFLAG_SERVER, flag}
72 * Opaque structure containing SSL configuration context.
75 struct ssl_conf_ctx_st {
77 * Various flags indicating (among other things) which options we will
81 /* Prefix and length of commands */
84 /* SSL_CTX or SSL structure to perform operations on */
87 /* Pointer to SSL or SSL_CTX options field or NULL if none */
89 /* Certificate filenames for each type */
90 char *cert_filename[SSL_PKEY_NUM];
91 /* Pointer to SSL or SSL_CTX cert_flags or NULL if none */
92 uint32_t *pcert_flags;
93 /* Pointer to SSL or SSL_CTX verify_mode or NULL if none */
95 /* Pointer to SSL or SSL_CTX min_version field or NULL if none */
97 /* Pointer to SSL or SSL_CTX max_version field or NULL if none */
99 /* Current flag table being worked on */
100 const ssl_flag_tbl *tbl;
103 /* Client CA names */
104 STACK_OF(X509_NAME) *canames;
107 static void ssl_set_option(SSL_CONF_CTX *cctx, unsigned int name_flags,
108 unsigned long 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:
126 pflags = cctx->poptions;
134 *pflags |= option_value;
136 *pflags &= ~option_value;
139 static int ssl_match_option(SSL_CONF_CTX *cctx, const ssl_flag_tbl *tbl,
140 const char *name, int namelen, int onoff)
142 /* If name not relevant for context skip */
143 if (!(cctx->flags & tbl->name_flags & SSL_TFLAG_BOTH))
146 if (strcmp(tbl->name, name))
148 } else if (tbl->namelen != namelen || strncasecmp(tbl->name, name, namelen))
150 ssl_set_option(cctx, tbl->name_flags, tbl->option_value, onoff);
154 static int ssl_set_option_list(const char *elem, int len, void *usr)
156 SSL_CONF_CTX *cctx = usr;
158 const ssl_flag_tbl *tbl;
161 * len == -1 indicates not being called in list context, just for single
162 * command line switches, so don't allow +, -.
171 } else if (*elem == '-') {
177 for (i = 0, tbl = cctx->tbl; i < cctx->ntbl; i++, tbl++) {
178 if (ssl_match_option(cctx, tbl, elem, len, onoff))
184 /* Set supported signature algorithms */
185 static int cmd_SignatureAlgorithms(SSL_CONF_CTX *cctx, const char *value)
189 rv = SSL_set1_sigalgs_list(cctx->ssl, value);
190 /* NB: ctx == NULL performs syntax checking only */
192 rv = SSL_CTX_set1_sigalgs_list(cctx->ctx, value);
196 /* Set supported client signature algorithms */
197 static int cmd_ClientSignatureAlgorithms(SSL_CONF_CTX *cctx, const char *value)
201 rv = SSL_set1_client_sigalgs_list(cctx->ssl, value);
202 /* NB: ctx == NULL performs syntax checking only */
204 rv = SSL_CTX_set1_client_sigalgs_list(cctx->ctx, value);
208 static int cmd_Groups(SSL_CONF_CTX *cctx, const char *value)
212 rv = SSL_set1_groups_list(cctx->ssl, value);
213 /* NB: ctx == NULL performs syntax checking only */
215 rv = SSL_CTX_set1_groups_list(cctx->ctx, value);
219 /* This is the old name for cmd_Groups - retained for backwards compatibility */
220 static int cmd_Curves(SSL_CONF_CTX *cctx, const char *value)
222 return cmd_Groups(cctx, value);
225 #ifndef OPENSSL_NO_EC
226 /* ECDH temporary parameters */
227 static int cmd_ECDHParameters(SSL_CONF_CTX *cctx, const char *value)
232 /* Ignore values supported by 1.0.2 for the automatic selection */
233 if ((cctx->flags & SSL_CONF_FLAG_FILE)
234 && (strcasecmp(value, "+automatic") == 0
235 || strcasecmp(value, "automatic") == 0))
237 if ((cctx->flags & SSL_CONF_FLAG_CMDLINE) &&
238 strcmp(value, "auto") == 0)
241 nid = EC_curve_nist2nid(value);
242 if (nid == NID_undef)
243 nid = OBJ_sn2nid(value);
248 rv = SSL_CTX_set1_groups(cctx->ctx, &nid, 1);
250 rv = SSL_set1_groups(cctx->ssl, &nid, 1);
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_INV("EncryptThenMac", SSL_OP_NO_ENCRYPT_THEN_MAC),
388 SSL_FLAG_TBL("NoRenegotiation", SSL_OP_NO_RENEGOTIATION),
389 SSL_FLAG_TBL("AllowNoDHEKEX", SSL_OP_ALLOW_NO_DHE_KEX),
390 SSL_FLAG_TBL("PrioritizeChaCha", SSL_OP_PRIORITIZE_CHACHA),
391 SSL_FLAG_TBL("MiddleboxCompat", SSL_OP_ENABLE_MIDDLEBOX_COMPAT),
392 SSL_FLAG_TBL_INV("AntiReplay", SSL_OP_NO_ANTI_REPLAY),
393 SSL_FLAG_TBL_INV("ExtendedMasterSecret", SSL_OP_NO_EXTENDED_MASTER_SECRET),
394 SSL_FLAG_TBL_INV("CANames", SSL_OP_DISABLE_TLSEXT_CA_NAMES)
398 cctx->tbl = ssl_option_list;
399 cctx->ntbl = OSSL_NELEM(ssl_option_list);
400 return CONF_parse_list(value, ',', 1, ssl_set_option_list, cctx);
403 static int cmd_VerifyMode(SSL_CONF_CTX *cctx, const char *value)
405 static const ssl_flag_tbl ssl_vfy_list[] = {
406 SSL_FLAG_VFY_CLI("Peer", SSL_VERIFY_PEER),
407 SSL_FLAG_VFY_SRV("Request", SSL_VERIFY_PEER),
408 SSL_FLAG_VFY_SRV("Require",
409 SSL_VERIFY_PEER | SSL_VERIFY_FAIL_IF_NO_PEER_CERT),
410 SSL_FLAG_VFY_SRV("Once", SSL_VERIFY_PEER | SSL_VERIFY_CLIENT_ONCE),
411 SSL_FLAG_VFY_SRV("RequestPostHandshake",
412 SSL_VERIFY_PEER | SSL_VERIFY_POST_HANDSHAKE),
413 SSL_FLAG_VFY_SRV("RequirePostHandshake",
414 SSL_VERIFY_PEER | SSL_VERIFY_POST_HANDSHAKE |
415 SSL_VERIFY_FAIL_IF_NO_PEER_CERT),
419 cctx->tbl = ssl_vfy_list;
420 cctx->ntbl = OSSL_NELEM(ssl_vfy_list);
421 return CONF_parse_list(value, ',', 1, ssl_set_option_list, cctx);
424 static int cmd_Certificate(SSL_CONF_CTX *cctx, const char *value)
429 rv = SSL_CTX_use_certificate_chain_file(cctx->ctx, value);
433 rv = SSL_use_certificate_chain_file(cctx->ssl, value);
436 if (rv > 0 && c && cctx->flags & SSL_CONF_FLAG_REQUIRE_PRIVATE) {
437 char **pfilename = &cctx->cert_filename[c->key - c->pkeys];
438 OPENSSL_free(*pfilename);
439 *pfilename = OPENSSL_strdup(value);
440 if (*pfilename == NULL)
447 static int cmd_PrivateKey(SSL_CONF_CTX *cctx, const char *value)
450 if (!(cctx->flags & SSL_CONF_FLAG_CERTIFICATE))
453 rv = SSL_CTX_use_PrivateKey_file(cctx->ctx, value, SSL_FILETYPE_PEM);
455 rv = SSL_use_PrivateKey_file(cctx->ssl, value, SSL_FILETYPE_PEM);
459 static int cmd_ServerInfoFile(SSL_CONF_CTX *cctx, const char *value)
463 rv = SSL_CTX_use_serverinfo_file(cctx->ctx, value);
467 static int do_store(SSL_CONF_CTX *cctx,
468 const char *CAfile, const char *CApath, const char *CAstore,
475 cert = cctx->ctx->cert;
477 cert = cctx->ssl->cert;
480 st = verify_store ? &cert->verify_store : &cert->chain_store;
482 *st = X509_STORE_new();
487 if (CAfile != NULL && !X509_STORE_load_file(*st, CAfile))
489 if (CApath != NULL && !X509_STORE_load_path(*st, CApath))
491 if (CAstore != NULL && !X509_STORE_load_store(*st, CAstore))
496 static int cmd_ChainCAPath(SSL_CONF_CTX *cctx, const char *value)
498 return do_store(cctx, NULL, value, NULL, 0);
501 static int cmd_ChainCAFile(SSL_CONF_CTX *cctx, const char *value)
503 return do_store(cctx, value, NULL, NULL, 0);
506 static int cmd_ChainCAStore(SSL_CONF_CTX *cctx, const char *value)
508 return do_store(cctx, NULL, NULL, value, 0);
511 static int cmd_VerifyCAPath(SSL_CONF_CTX *cctx, const char *value)
513 return do_store(cctx, NULL, value, NULL, 1);
516 static int cmd_VerifyCAFile(SSL_CONF_CTX *cctx, const char *value)
518 return do_store(cctx, value, NULL, NULL, 1);
521 static int cmd_VerifyCAStore(SSL_CONF_CTX *cctx, const char *value)
523 return do_store(cctx, NULL, NULL, value, 1);
526 static int cmd_RequestCAFile(SSL_CONF_CTX *cctx, const char *value)
528 if (cctx->canames == NULL)
529 cctx->canames = sk_X509_NAME_new_null();
530 if (cctx->canames == NULL)
532 return SSL_add_file_cert_subjects_to_stack(cctx->canames, value);
535 static int cmd_ClientCAFile(SSL_CONF_CTX *cctx, const char *value)
537 return cmd_RequestCAFile(cctx, value);
540 static int cmd_RequestCAPath(SSL_CONF_CTX *cctx, const char *value)
542 if (cctx->canames == NULL)
543 cctx->canames = sk_X509_NAME_new_null();
544 if (cctx->canames == NULL)
546 return SSL_add_dir_cert_subjects_to_stack(cctx->canames, value);
549 static int cmd_ClientCAPath(SSL_CONF_CTX *cctx, const char *value)
551 return cmd_RequestCAPath(cctx, value);
554 static int cmd_RequestCAStore(SSL_CONF_CTX *cctx, const char *value)
556 if (cctx->canames == NULL)
557 cctx->canames = sk_X509_NAME_new_null();
558 if (cctx->canames == NULL)
560 return SSL_add_store_cert_subjects_to_stack(cctx->canames, value);
563 static int cmd_ClientCAStore(SSL_CONF_CTX *cctx, const char *value)
565 return cmd_RequestCAStore(cctx, value);
568 #ifndef OPENSSL_NO_DH
569 static int cmd_DHParameters(SSL_CONF_CTX *cctx, const char *value)
574 if (cctx->ctx || cctx->ssl) {
575 in = BIO_new(BIO_s_file());
578 if (BIO_read_filename(in, value) <= 0)
580 dh = PEM_read_bio_DHparams(in, NULL, NULL, NULL);
586 rv = SSL_CTX_set_tmp_dh(cctx->ctx, dh);
588 rv = SSL_set_tmp_dh(cctx->ssl, dh);
596 static int cmd_RecordPadding(SSL_CONF_CTX *cctx, const char *value)
599 int block_size = atoi(value);
602 * All we care about is a non-negative value,
603 * the setters check the range
605 if (block_size >= 0) {
607 rv = SSL_CTX_set_block_padding(cctx->ctx, block_size);
609 rv = SSL_set_block_padding(cctx->ssl, block_size);
615 static int cmd_NumTickets(SSL_CONF_CTX *cctx, const char *value)
618 int num_tickets = atoi(value);
620 if (num_tickets >= 0) {
622 rv = SSL_CTX_set_num_tickets(cctx->ctx, num_tickets);
624 rv = SSL_set_num_tickets(cctx->ssl, num_tickets);
630 int (*cmd) (SSL_CONF_CTX *cctx, const char *value);
631 const char *str_file;
632 const char *str_cmdline;
633 unsigned short flags;
634 unsigned short value_type;
637 /* Table of supported parameters */
639 #define SSL_CONF_CMD(name, cmdopt, flags, type) \
640 {cmd_##name, #name, cmdopt, flags, type}
642 #define SSL_CONF_CMD_STRING(name, cmdopt, flags) \
643 SSL_CONF_CMD(name, cmdopt, flags, SSL_CONF_TYPE_STRING)
645 #define SSL_CONF_CMD_SWITCH(name, flags) \
646 {0, NULL, name, flags, SSL_CONF_TYPE_NONE}
648 /* See apps/apps.h if you change this table. */
649 static const ssl_conf_cmd_tbl ssl_conf_cmds[] = {
650 SSL_CONF_CMD_SWITCH("no_ssl3", 0),
651 SSL_CONF_CMD_SWITCH("no_tls1", 0),
652 SSL_CONF_CMD_SWITCH("no_tls1_1", 0),
653 SSL_CONF_CMD_SWITCH("no_tls1_2", 0),
654 SSL_CONF_CMD_SWITCH("no_tls1_3", 0),
655 SSL_CONF_CMD_SWITCH("bugs", 0),
656 SSL_CONF_CMD_SWITCH("no_comp", 0),
657 SSL_CONF_CMD_SWITCH("comp", 0),
658 SSL_CONF_CMD_SWITCH("ecdh_single", SSL_CONF_FLAG_SERVER),
659 SSL_CONF_CMD_SWITCH("no_ticket", 0),
660 SSL_CONF_CMD_SWITCH("serverpref", SSL_CONF_FLAG_SERVER),
661 SSL_CONF_CMD_SWITCH("legacy_renegotiation", 0),
662 SSL_CONF_CMD_SWITCH("legacy_server_connect", SSL_CONF_FLAG_SERVER),
663 SSL_CONF_CMD_SWITCH("no_renegotiation", 0),
664 SSL_CONF_CMD_SWITCH("no_resumption_on_reneg", SSL_CONF_FLAG_SERVER),
665 SSL_CONF_CMD_SWITCH("no_legacy_server_connect", SSL_CONF_FLAG_SERVER),
666 SSL_CONF_CMD_SWITCH("allow_no_dhe_kex", 0),
667 SSL_CONF_CMD_SWITCH("prioritize_chacha", SSL_CONF_FLAG_SERVER),
668 SSL_CONF_CMD_SWITCH("strict", 0),
669 SSL_CONF_CMD_SWITCH("no_middlebox", 0),
670 SSL_CONF_CMD_SWITCH("anti_replay", SSL_CONF_FLAG_SERVER),
671 SSL_CONF_CMD_SWITCH("no_anti_replay", SSL_CONF_FLAG_SERVER),
672 SSL_CONF_CMD_STRING(SignatureAlgorithms, "sigalgs", 0),
673 SSL_CONF_CMD_STRING(ClientSignatureAlgorithms, "client_sigalgs", 0),
674 SSL_CONF_CMD_STRING(Curves, "curves", 0),
675 SSL_CONF_CMD_STRING(Groups, "groups", 0),
676 #ifndef OPENSSL_NO_EC
677 SSL_CONF_CMD_STRING(ECDHParameters, "named_curve", SSL_CONF_FLAG_SERVER),
679 SSL_CONF_CMD_STRING(CipherString, "cipher", 0),
680 SSL_CONF_CMD_STRING(Ciphersuites, "ciphersuites", 0),
681 SSL_CONF_CMD_STRING(Protocol, NULL, 0),
682 SSL_CONF_CMD_STRING(MinProtocol, "min_protocol", 0),
683 SSL_CONF_CMD_STRING(MaxProtocol, "max_protocol", 0),
684 SSL_CONF_CMD_STRING(Options, NULL, 0),
685 SSL_CONF_CMD_STRING(VerifyMode, NULL, 0),
686 SSL_CONF_CMD(Certificate, "cert", SSL_CONF_FLAG_CERTIFICATE,
688 SSL_CONF_CMD(PrivateKey, "key", SSL_CONF_FLAG_CERTIFICATE,
690 SSL_CONF_CMD(ServerInfoFile, NULL,
691 SSL_CONF_FLAG_SERVER | SSL_CONF_FLAG_CERTIFICATE,
693 SSL_CONF_CMD(ChainCAPath, "chainCApath", SSL_CONF_FLAG_CERTIFICATE,
695 SSL_CONF_CMD(ChainCAFile, "chainCAfile", SSL_CONF_FLAG_CERTIFICATE,
697 SSL_CONF_CMD(ChainCAStore, "chainCAstore", SSL_CONF_FLAG_CERTIFICATE,
698 SSL_CONF_TYPE_STORE),
699 SSL_CONF_CMD(VerifyCAPath, "verifyCApath", SSL_CONF_FLAG_CERTIFICATE,
701 SSL_CONF_CMD(VerifyCAFile, "verifyCAfile", SSL_CONF_FLAG_CERTIFICATE,
703 SSL_CONF_CMD(VerifyCAStore, "verifyCAstore", SSL_CONF_FLAG_CERTIFICATE,
704 SSL_CONF_TYPE_STORE),
705 SSL_CONF_CMD(RequestCAFile, "requestCAFile", SSL_CONF_FLAG_CERTIFICATE,
707 SSL_CONF_CMD(ClientCAFile, NULL,
708 SSL_CONF_FLAG_SERVER | SSL_CONF_FLAG_CERTIFICATE,
710 SSL_CONF_CMD(RequestCAPath, NULL, SSL_CONF_FLAG_CERTIFICATE,
712 SSL_CONF_CMD(ClientCAPath, NULL,
713 SSL_CONF_FLAG_SERVER | SSL_CONF_FLAG_CERTIFICATE,
715 SSL_CONF_CMD(RequestCAStore, "requestCAStore", SSL_CONF_FLAG_CERTIFICATE,
716 SSL_CONF_TYPE_STORE),
717 SSL_CONF_CMD(ClientCAStore, NULL,
718 SSL_CONF_FLAG_SERVER | SSL_CONF_FLAG_CERTIFICATE,
719 SSL_CONF_TYPE_STORE),
720 #ifndef OPENSSL_NO_DH
721 SSL_CONF_CMD(DHParameters, "dhparam",
722 SSL_CONF_FLAG_SERVER | SSL_CONF_FLAG_CERTIFICATE,
725 SSL_CONF_CMD_STRING(RecordPadding, "record_padding", 0),
726 SSL_CONF_CMD_STRING(NumTickets, "num_tickets", SSL_CONF_FLAG_SERVER),
729 /* Supported switches: must match order of switches in ssl_conf_cmds */
730 static const ssl_switch_tbl ssl_cmd_switches[] = {
731 {SSL_OP_NO_SSLv3, 0}, /* no_ssl3 */
732 {SSL_OP_NO_TLSv1, 0}, /* no_tls1 */
733 {SSL_OP_NO_TLSv1_1, 0}, /* no_tls1_1 */
734 {SSL_OP_NO_TLSv1_2, 0}, /* no_tls1_2 */
735 {SSL_OP_NO_TLSv1_3, 0}, /* no_tls1_3 */
736 {SSL_OP_ALL, 0}, /* bugs */
737 {SSL_OP_NO_COMPRESSION, 0}, /* no_comp */
738 {SSL_OP_NO_COMPRESSION, SSL_TFLAG_INV}, /* comp */
739 {SSL_OP_SINGLE_ECDH_USE, 0}, /* ecdh_single */
740 {SSL_OP_NO_TICKET, 0}, /* no_ticket */
741 {SSL_OP_CIPHER_SERVER_PREFERENCE, 0}, /* serverpref */
742 /* legacy_renegotiation */
743 {SSL_OP_ALLOW_UNSAFE_LEGACY_RENEGOTIATION, 0},
744 /* legacy_server_connect */
745 {SSL_OP_LEGACY_SERVER_CONNECT, 0},
746 /* no_renegotiation */
747 {SSL_OP_NO_RENEGOTIATION, 0},
748 /* no_resumption_on_reneg */
749 {SSL_OP_NO_SESSION_RESUMPTION_ON_RENEGOTIATION, 0},
750 /* no_legacy_server_connect */
751 {SSL_OP_LEGACY_SERVER_CONNECT, SSL_TFLAG_INV},
752 /* allow_no_dhe_kex */
753 {SSL_OP_ALLOW_NO_DHE_KEX, 0},
754 /* chacha reprioritization */
755 {SSL_OP_PRIORITIZE_CHACHA, 0},
756 {SSL_CERT_FLAG_TLS_STRICT, SSL_TFLAG_CERT}, /* strict */
758 {SSL_OP_ENABLE_MIDDLEBOX_COMPAT, SSL_TFLAG_INV},
760 {SSL_OP_NO_ANTI_REPLAY, SSL_TFLAG_INV},
762 {SSL_OP_NO_ANTI_REPLAY, 0},
765 static int ssl_conf_cmd_skip_prefix(SSL_CONF_CTX *cctx, const char **pcmd)
767 if (pcmd == NULL || *pcmd == NULL)
769 /* If a prefix is set, check and skip */
771 if (strlen(*pcmd) <= cctx->prefixlen)
773 if (cctx->flags & SSL_CONF_FLAG_CMDLINE &&
774 strncmp(*pcmd, cctx->prefix, cctx->prefixlen))
776 if (cctx->flags & SSL_CONF_FLAG_FILE &&
777 strncasecmp(*pcmd, cctx->prefix, cctx->prefixlen))
779 *pcmd += cctx->prefixlen;
780 } else if (cctx->flags & SSL_CONF_FLAG_CMDLINE) {
781 if (**pcmd != '-' || !(*pcmd)[1])
788 /* Determine if a command is allowed according to cctx flags */
789 static int ssl_conf_cmd_allowed(SSL_CONF_CTX *cctx, const ssl_conf_cmd_tbl * t)
791 unsigned int tfl = t->flags;
792 unsigned int cfl = cctx->flags;
793 if ((tfl & SSL_CONF_FLAG_SERVER) && !(cfl & SSL_CONF_FLAG_SERVER))
795 if ((tfl & SSL_CONF_FLAG_CLIENT) && !(cfl & SSL_CONF_FLAG_CLIENT))
797 if ((tfl & SSL_CONF_FLAG_CERTIFICATE)
798 && !(cfl & SSL_CONF_FLAG_CERTIFICATE))
803 static const ssl_conf_cmd_tbl *ssl_conf_cmd_lookup(SSL_CONF_CTX *cctx,
806 const ssl_conf_cmd_tbl *t;
811 /* Look for matching parameter name in table */
812 for (i = 0, t = ssl_conf_cmds; i < OSSL_NELEM(ssl_conf_cmds); i++, t++) {
813 if (ssl_conf_cmd_allowed(cctx, t)) {
814 if (cctx->flags & SSL_CONF_FLAG_CMDLINE) {
815 if (t->str_cmdline && strcmp(t->str_cmdline, cmd) == 0)
818 if (cctx->flags & SSL_CONF_FLAG_FILE) {
819 if (t->str_file && strcasecmp(t->str_file, cmd) == 0)
827 static int ctrl_switch_option(SSL_CONF_CTX *cctx, const ssl_conf_cmd_tbl * cmd)
829 /* Find index of command in table */
830 size_t idx = cmd - ssl_conf_cmds;
831 const ssl_switch_tbl *scmd;
832 /* Sanity check index */
833 if (idx >= OSSL_NELEM(ssl_cmd_switches))
835 /* Obtain switches entry with same index */
836 scmd = ssl_cmd_switches + idx;
837 ssl_set_option(cctx, scmd->name_flags, scmd->option_value, 1);
841 int SSL_CONF_cmd(SSL_CONF_CTX *cctx, const char *cmd, const char *value)
843 const ssl_conf_cmd_tbl *runcmd;
845 SSLerr(SSL_F_SSL_CONF_CMD, SSL_R_INVALID_NULL_CMD_NAME);
849 if (!ssl_conf_cmd_skip_prefix(cctx, &cmd))
852 runcmd = ssl_conf_cmd_lookup(cctx, cmd);
856 if (runcmd->value_type == SSL_CONF_TYPE_NONE) {
857 return ctrl_switch_option(cctx, runcmd);
861 rv = runcmd->cmd(cctx, value);
866 if (cctx->flags & SSL_CONF_FLAG_SHOW_ERRORS) {
867 SSLerr(SSL_F_SSL_CONF_CMD, SSL_R_BAD_VALUE);
868 ERR_add_error_data(4, "cmd=", cmd, ", value=", value);
873 if (cctx->flags & SSL_CONF_FLAG_SHOW_ERRORS) {
874 SSLerr(SSL_F_SSL_CONF_CMD, SSL_R_UNKNOWN_CMD_NAME);
875 ERR_add_error_data(2, "cmd=", cmd);
881 int SSL_CONF_cmd_argv(SSL_CONF_CTX *cctx, int *pargc, char ***pargv)
884 const char *arg = NULL, *argn;
886 if (pargc != NULL && *pargc == 0)
888 if (pargc == NULL || *pargc > 0)
892 if (pargc == NULL || *pargc > 1)
896 cctx->flags &= ~SSL_CONF_FLAG_FILE;
897 cctx->flags |= SSL_CONF_FLAG_CMDLINE;
898 rv = SSL_CONF_cmd(cctx, arg, argn);
900 /* Success: update pargc, pargv */
906 /* Unknown switch: indicate no arguments processed */
909 /* Some error occurred processing command, return fatal error */
915 int SSL_CONF_cmd_value_type(SSL_CONF_CTX *cctx, const char *cmd)
917 if (ssl_conf_cmd_skip_prefix(cctx, &cmd)) {
918 const ssl_conf_cmd_tbl *runcmd;
919 runcmd = ssl_conf_cmd_lookup(cctx, cmd);
921 return runcmd->value_type;
923 return SSL_CONF_TYPE_UNKNOWN;
926 SSL_CONF_CTX *SSL_CONF_CTX_new(void)
928 SSL_CONF_CTX *ret = OPENSSL_zalloc(sizeof(*ret));
933 int SSL_CONF_CTX_finish(SSL_CONF_CTX *cctx)
935 /* See if any certificates are missing private keys */
942 if (c && cctx->flags & SSL_CONF_FLAG_REQUIRE_PRIVATE) {
943 for (i = 0; i < SSL_PKEY_NUM; i++) {
944 const char *p = cctx->cert_filename[i];
946 * If missing private key try to load one from certificate file
948 if (p && !c->pkeys[i].privatekey) {
949 if (!cmd_PrivateKey(cctx, p))
956 SSL_set0_CA_list(cctx->ssl, cctx->canames);
958 SSL_CTX_set0_CA_list(cctx->ctx, cctx->canames);
960 sk_X509_NAME_pop_free(cctx->canames, X509_NAME_free);
961 cctx->canames = NULL;
966 void SSL_CONF_CTX_free(SSL_CONF_CTX *cctx)
970 for (i = 0; i < SSL_PKEY_NUM; i++)
971 OPENSSL_free(cctx->cert_filename[i]);
972 OPENSSL_free(cctx->prefix);
973 sk_X509_NAME_pop_free(cctx->canames, X509_NAME_free);
978 unsigned int SSL_CONF_CTX_set_flags(SSL_CONF_CTX *cctx, unsigned int flags)
980 cctx->flags |= flags;
984 unsigned int SSL_CONF_CTX_clear_flags(SSL_CONF_CTX *cctx, unsigned int flags)
986 cctx->flags &= ~flags;
990 int SSL_CONF_CTX_set1_prefix(SSL_CONF_CTX *cctx, const char *pre)
994 tmp = OPENSSL_strdup(pre);
998 OPENSSL_free(cctx->prefix);
1001 cctx->prefixlen = strlen(tmp);
1003 cctx->prefixlen = 0;
1007 void SSL_CONF_CTX_set_ssl(SSL_CONF_CTX *cctx, SSL *ssl)
1012 cctx->poptions = &ssl->options;
1013 cctx->min_version = &ssl->min_proto_version;
1014 cctx->max_version = &ssl->max_proto_version;
1015 cctx->pcert_flags = &ssl->cert->cert_flags;
1016 cctx->pvfy_flags = &ssl->verify_mode;
1018 cctx->poptions = NULL;
1019 cctx->min_version = NULL;
1020 cctx->max_version = NULL;
1021 cctx->pcert_flags = NULL;
1022 cctx->pvfy_flags = NULL;
1026 void SSL_CONF_CTX_set_ssl_ctx(SSL_CONF_CTX *cctx, SSL_CTX *ctx)
1031 cctx->poptions = &ctx->options;
1032 cctx->min_version = &ctx->min_proto_version;
1033 cctx->max_version = &ctx->max_proto_version;
1034 cctx->pcert_flags = &ctx->cert->cert_flags;
1035 cctx->pvfy_flags = &ctx->verify_mode;
1037 cctx->poptions = NULL;
1038 cctx->min_version = NULL;
1039 cctx->max_version = NULL;
1040 cctx->pcert_flags = NULL;
1041 cctx->pvfy_flags = NULL;