2 * Copyright 2012-2021 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 || strncasecmp(tbl->name, name, namelen))
153 ssl_set_option(cctx, tbl->name_flags, tbl->option_value, onoff);
157 static int ssl_set_option_list(const char *elem, int len, void *usr)
159 SSL_CONF_CTX *cctx = usr;
161 const ssl_flag_tbl *tbl;
164 * len == -1 indicates not being called in list context, just for single
165 * command line switches, so don't allow +, -.
174 } else if (*elem == '-') {
180 for (i = 0, tbl = cctx->tbl; i < cctx->ntbl; i++, tbl++) {
181 if (ssl_match_option(cctx, tbl, elem, len, onoff))
187 /* Set supported signature algorithms */
188 static int cmd_SignatureAlgorithms(SSL_CONF_CTX *cctx, const char *value)
192 rv = SSL_set1_sigalgs_list(cctx->ssl, value);
193 /* NB: ctx == NULL performs syntax checking only */
195 rv = SSL_CTX_set1_sigalgs_list(cctx->ctx, value);
199 /* Set supported client signature algorithms */
200 static int cmd_ClientSignatureAlgorithms(SSL_CONF_CTX *cctx, const char *value)
204 rv = SSL_set1_client_sigalgs_list(cctx->ssl, value);
205 /* NB: ctx == NULL performs syntax checking only */
207 rv = SSL_CTX_set1_client_sigalgs_list(cctx->ctx, value);
211 static int cmd_Groups(SSL_CONF_CTX *cctx, const char *value)
215 rv = SSL_set1_groups_list(cctx->ssl, value);
216 /* NB: ctx == NULL performs syntax checking only */
218 rv = SSL_CTX_set1_groups_list(cctx->ctx, value);
222 /* This is the old name for cmd_Groups - retained for backwards compatibility */
223 static int cmd_Curves(SSL_CONF_CTX *cctx, const char *value)
225 return cmd_Groups(cctx, value);
228 /* ECDH temporary parameters */
229 static int cmd_ECDHParameters(SSL_CONF_CTX *cctx, const char *value)
233 /* Ignore values supported by 1.0.2 for the automatic selection */
234 if ((cctx->flags & SSL_CONF_FLAG_FILE)
235 && (strcasecmp(value, "+automatic") == 0
236 || strcasecmp(value, "automatic") == 0))
238 if ((cctx->flags & SSL_CONF_FLAG_CMDLINE) &&
239 strcmp(value, "auto") == 0)
242 /* ECDHParameters accepts a single group name */
243 if (strstr(value, ":") != NULL)
247 rv = SSL_CTX_set1_groups_list(cctx->ctx, value);
249 rv = SSL_set1_groups_list(cctx->ssl, value);
254 static int cmd_CipherString(SSL_CONF_CTX *cctx, const char *value)
259 rv = SSL_CTX_set_cipher_list(cctx->ctx, value);
261 rv = SSL_set_cipher_list(cctx->ssl, value);
265 static int cmd_Ciphersuites(SSL_CONF_CTX *cctx, const char *value)
270 rv = SSL_CTX_set_ciphersuites(cctx->ctx, value);
272 rv = SSL_set_ciphersuites(cctx->ssl, value);
276 static int cmd_Protocol(SSL_CONF_CTX *cctx, const char *value)
278 static const ssl_flag_tbl ssl_protocol_list[] = {
279 SSL_FLAG_TBL_INV("ALL", SSL_OP_NO_SSL_MASK),
280 SSL_FLAG_TBL_INV("SSLv2", SSL_OP_NO_SSLv2),
281 SSL_FLAG_TBL_INV("SSLv3", SSL_OP_NO_SSLv3),
282 SSL_FLAG_TBL_INV("TLSv1", SSL_OP_NO_TLSv1),
283 SSL_FLAG_TBL_INV("TLSv1.1", SSL_OP_NO_TLSv1_1),
284 SSL_FLAG_TBL_INV("TLSv1.2", SSL_OP_NO_TLSv1_2),
285 SSL_FLAG_TBL_INV("TLSv1.3", SSL_OP_NO_TLSv1_3),
286 SSL_FLAG_TBL_INV("DTLSv1", SSL_OP_NO_DTLSv1),
287 SSL_FLAG_TBL_INV("DTLSv1.2", SSL_OP_NO_DTLSv1_2)
289 cctx->tbl = ssl_protocol_list;
290 cctx->ntbl = OSSL_NELEM(ssl_protocol_list);
291 return CONF_parse_list(value, ',', 1, ssl_set_option_list, cctx);
295 * protocol_from_string - converts a protocol version string to a number
297 * Returns -1 on failure or the version on success
299 static int protocol_from_string(const char *value)
301 struct protocol_versions {
306 * Note: To avoid breaking previously valid configurations, we must retain
307 * legacy entries in this table even if the underlying protocol is no
308 * longer supported. This also means that the constants SSL3_VERSION, ...
309 * need to be retained indefinitely. This table can only grow, never
312 static const struct protocol_versions versions[] = {
314 {"SSLv3", SSL3_VERSION},
315 {"TLSv1", TLS1_VERSION},
316 {"TLSv1.1", TLS1_1_VERSION},
317 {"TLSv1.2", TLS1_2_VERSION},
318 {"TLSv1.3", TLS1_3_VERSION},
319 {"DTLSv1", DTLS1_VERSION},
320 {"DTLSv1.2", DTLS1_2_VERSION}
323 size_t n = OSSL_NELEM(versions);
325 for (i = 0; i < n; i++)
326 if (strcmp(versions[i].name, value) == 0)
327 return versions[i].version;
331 static int min_max_proto(SSL_CONF_CTX *cctx, const char *value, int *bound)
336 if (cctx->ctx != NULL)
337 method_version = cctx->ctx->method->version;
338 else if (cctx->ssl != NULL)
339 method_version = cctx->ssl->ctx->method->version;
342 if ((new_version = protocol_from_string(value)) < 0)
344 return ssl_set_version_bound(method_version, new_version, bound);
348 * cmd_MinProtocol - Set min protocol version
349 * @cctx: config structure to save settings in
350 * @value: The min protocol version in string form
352 * Returns 1 on success and 0 on failure.
354 static int cmd_MinProtocol(SSL_CONF_CTX *cctx, const char *value)
356 return min_max_proto(cctx, value, cctx->min_version);
360 * cmd_MaxProtocol - Set max protocol version
361 * @cctx: config structure to save settings in
362 * @value: The max protocol version in string form
364 * Returns 1 on success and 0 on failure.
366 static int cmd_MaxProtocol(SSL_CONF_CTX *cctx, const char *value)
368 return min_max_proto(cctx, value, cctx->max_version);
371 static int cmd_Options(SSL_CONF_CTX *cctx, const char *value)
373 static const ssl_flag_tbl ssl_option_list[] = {
374 SSL_FLAG_TBL_INV("SessionTicket", SSL_OP_NO_TICKET),
375 SSL_FLAG_TBL_INV("EmptyFragments",
376 SSL_OP_DONT_INSERT_EMPTY_FRAGMENTS),
377 SSL_FLAG_TBL("Bugs", SSL_OP_ALL),
378 SSL_FLAG_TBL_INV("Compression", SSL_OP_NO_COMPRESSION),
379 SSL_FLAG_TBL_SRV("ServerPreference", SSL_OP_CIPHER_SERVER_PREFERENCE),
380 SSL_FLAG_TBL_SRV("NoResumptionOnRenegotiation",
381 SSL_OP_NO_SESSION_RESUMPTION_ON_RENEGOTIATION),
382 SSL_FLAG_TBL_SRV("DHSingle", SSL_OP_SINGLE_DH_USE),
383 SSL_FLAG_TBL_SRV("ECDHSingle", SSL_OP_SINGLE_ECDH_USE),
384 SSL_FLAG_TBL("UnsafeLegacyRenegotiation",
385 SSL_OP_ALLOW_UNSAFE_LEGACY_RENEGOTIATION),
386 SSL_FLAG_TBL("ClientRenegotiation",
387 SSL_OP_ALLOW_CLIENT_RENEGOTIATION),
388 SSL_FLAG_TBL_INV("EncryptThenMac", SSL_OP_NO_ENCRYPT_THEN_MAC),
389 SSL_FLAG_TBL("NoRenegotiation", SSL_OP_NO_RENEGOTIATION),
390 SSL_FLAG_TBL("AllowNoDHEKEX", SSL_OP_ALLOW_NO_DHE_KEX),
391 SSL_FLAG_TBL("PrioritizeChaCha", SSL_OP_PRIORITIZE_CHACHA),
392 SSL_FLAG_TBL("MiddleboxCompat", SSL_OP_ENABLE_MIDDLEBOX_COMPAT),
393 SSL_FLAG_TBL_INV("AntiReplay", SSL_OP_NO_ANTI_REPLAY),
394 SSL_FLAG_TBL_INV("ExtendedMasterSecret", SSL_OP_NO_EXTENDED_MASTER_SECRET),
395 SSL_FLAG_TBL_INV("CANames", SSL_OP_DISABLE_TLSEXT_CA_NAMES),
396 SSL_FLAG_TBL("KTLS", SSL_OP_ENABLE_KTLS)
400 cctx->tbl = ssl_option_list;
401 cctx->ntbl = OSSL_NELEM(ssl_option_list);
402 return CONF_parse_list(value, ',', 1, ssl_set_option_list, cctx);
405 static int cmd_VerifyMode(SSL_CONF_CTX *cctx, const char *value)
407 static const ssl_flag_tbl ssl_vfy_list[] = {
408 SSL_FLAG_VFY_CLI("Peer", SSL_VERIFY_PEER),
409 SSL_FLAG_VFY_SRV("Request", SSL_VERIFY_PEER),
410 SSL_FLAG_VFY_SRV("Require",
411 SSL_VERIFY_PEER | SSL_VERIFY_FAIL_IF_NO_PEER_CERT),
412 SSL_FLAG_VFY_SRV("Once", SSL_VERIFY_PEER | SSL_VERIFY_CLIENT_ONCE),
413 SSL_FLAG_VFY_SRV("RequestPostHandshake",
414 SSL_VERIFY_PEER | SSL_VERIFY_POST_HANDSHAKE),
415 SSL_FLAG_VFY_SRV("RequirePostHandshake",
416 SSL_VERIFY_PEER | SSL_VERIFY_POST_HANDSHAKE |
417 SSL_VERIFY_FAIL_IF_NO_PEER_CERT),
421 cctx->tbl = ssl_vfy_list;
422 cctx->ntbl = OSSL_NELEM(ssl_vfy_list);
423 return CONF_parse_list(value, ',', 1, ssl_set_option_list, cctx);
426 static int cmd_Certificate(SSL_CONF_CTX *cctx, const char *value)
431 rv = SSL_CTX_use_certificate_chain_file(cctx->ctx, value);
435 rv = SSL_use_certificate_chain_file(cctx->ssl, value);
438 if (rv > 0 && c && cctx->flags & SSL_CONF_FLAG_REQUIRE_PRIVATE) {
439 char **pfilename = &cctx->cert_filename[c->key - c->pkeys];
440 OPENSSL_free(*pfilename);
441 *pfilename = OPENSSL_strdup(value);
442 if (*pfilename == NULL)
449 static int cmd_PrivateKey(SSL_CONF_CTX *cctx, const char *value)
452 if (!(cctx->flags & SSL_CONF_FLAG_CERTIFICATE))
455 rv = SSL_CTX_use_PrivateKey_file(cctx->ctx, value, SSL_FILETYPE_PEM);
457 rv = SSL_use_PrivateKey_file(cctx->ssl, value, SSL_FILETYPE_PEM);
461 static int cmd_ServerInfoFile(SSL_CONF_CTX *cctx, const char *value)
465 rv = SSL_CTX_use_serverinfo_file(cctx->ctx, value);
469 static int do_store(SSL_CONF_CTX *cctx,
470 const char *CAfile, const char *CApath, const char *CAstore,
476 OSSL_LIB_CTX *libctx = NULL;
477 const char *propq = NULL;
479 if (cctx->ctx != NULL) {
480 cert = cctx->ctx->cert;
482 } else if (cctx->ssl != NULL) {
483 cert = cctx->ssl->cert;
484 ctx = cctx->ssl->ctx;
489 libctx = ctx->libctx;
492 st = verify_store ? &cert->verify_store : &cert->chain_store;
494 *st = X509_STORE_new();
499 if (CAfile != NULL && !X509_STORE_load_file_ex(*st, CAfile, libctx, propq))
501 if (CApath != NULL && !X509_STORE_load_path(*st, CApath))
503 if (CAstore != NULL && !X509_STORE_load_store_ex(*st, CAstore, libctx,
509 static int cmd_ChainCAPath(SSL_CONF_CTX *cctx, const char *value)
511 return do_store(cctx, NULL, value, NULL, 0);
514 static int cmd_ChainCAFile(SSL_CONF_CTX *cctx, const char *value)
516 return do_store(cctx, value, NULL, NULL, 0);
519 static int cmd_ChainCAStore(SSL_CONF_CTX *cctx, const char *value)
521 return do_store(cctx, NULL, NULL, value, 0);
524 static int cmd_VerifyCAPath(SSL_CONF_CTX *cctx, const char *value)
526 return do_store(cctx, NULL, value, NULL, 1);
529 static int cmd_VerifyCAFile(SSL_CONF_CTX *cctx, const char *value)
531 return do_store(cctx, value, NULL, NULL, 1);
534 static int cmd_VerifyCAStore(SSL_CONF_CTX *cctx, const char *value)
536 return do_store(cctx, NULL, NULL, value, 1);
539 static int cmd_RequestCAFile(SSL_CONF_CTX *cctx, const char *value)
541 if (cctx->canames == NULL)
542 cctx->canames = sk_X509_NAME_new_null();
543 if (cctx->canames == NULL)
545 return SSL_add_file_cert_subjects_to_stack(cctx->canames, value);
548 static int cmd_ClientCAFile(SSL_CONF_CTX *cctx, const char *value)
550 return cmd_RequestCAFile(cctx, value);
553 static int cmd_RequestCAPath(SSL_CONF_CTX *cctx, const char *value)
555 if (cctx->canames == NULL)
556 cctx->canames = sk_X509_NAME_new_null();
557 if (cctx->canames == NULL)
559 return SSL_add_dir_cert_subjects_to_stack(cctx->canames, value);
562 static int cmd_ClientCAPath(SSL_CONF_CTX *cctx, const char *value)
564 return cmd_RequestCAPath(cctx, value);
567 static int cmd_RequestCAStore(SSL_CONF_CTX *cctx, const char *value)
569 if (cctx->canames == NULL)
570 cctx->canames = sk_X509_NAME_new_null();
571 if (cctx->canames == NULL)
573 return SSL_add_store_cert_subjects_to_stack(cctx->canames, value);
576 static int cmd_ClientCAStore(SSL_CONF_CTX *cctx, const char *value)
578 return cmd_RequestCAStore(cctx, value);
581 static int cmd_DHParameters(SSL_CONF_CTX *cctx, const char *value)
584 EVP_PKEY *dhpkey = NULL;
586 SSL_CTX *sslctx = (cctx->ssl != NULL) ? cctx->ssl->ctx : cctx->ctx;
587 OSSL_DECODER_CTX *decoderctx = NULL;
589 if (cctx->ctx != NULL || cctx->ssl != NULL) {
590 in = BIO_new(BIO_s_file());
593 if (BIO_read_filename(in, value) <= 0)
597 = OSSL_DECODER_CTX_new_for_pkey(&dhpkey, "PEM", NULL, "DH",
598 OSSL_KEYMGMT_SELECT_DOMAIN_PARAMETERS,
599 sslctx->libctx, sslctx->propq);
600 if (decoderctx == NULL
601 || !OSSL_DECODER_from_bio(decoderctx, in)) {
602 OSSL_DECODER_CTX_free(decoderctx);
605 OSSL_DECODER_CTX_free(decoderctx);
613 if (cctx->ctx != NULL) {
614 if ((rv = SSL_CTX_set0_tmp_dh_pkey(cctx->ctx, dhpkey)) > 0)
617 if (cctx->ssl != NULL) {
618 if ((rv = SSL_set0_tmp_dh_pkey(cctx->ssl, dhpkey)) > 0)
622 EVP_PKEY_free(dhpkey);
627 static int cmd_RecordPadding(SSL_CONF_CTX *cctx, const char *value)
630 int block_size = atoi(value);
633 * All we care about is a non-negative value,
634 * the setters check the range
636 if (block_size >= 0) {
638 rv = SSL_CTX_set_block_padding(cctx->ctx, block_size);
640 rv = SSL_set_block_padding(cctx->ssl, block_size);
646 static int cmd_NumTickets(SSL_CONF_CTX *cctx, const char *value)
649 int num_tickets = atoi(value);
651 if (num_tickets >= 0) {
653 rv = SSL_CTX_set_num_tickets(cctx->ctx, num_tickets);
655 rv = SSL_set_num_tickets(cctx->ssl, num_tickets);
661 int (*cmd) (SSL_CONF_CTX *cctx, const char *value);
662 const char *str_file;
663 const char *str_cmdline;
664 unsigned short flags;
665 unsigned short value_type;
668 /* Table of supported parameters */
670 #define SSL_CONF_CMD(name, cmdopt, flags, type) \
671 {cmd_##name, #name, cmdopt, flags, type}
673 #define SSL_CONF_CMD_STRING(name, cmdopt, flags) \
674 SSL_CONF_CMD(name, cmdopt, flags, SSL_CONF_TYPE_STRING)
676 #define SSL_CONF_CMD_SWITCH(name, flags) \
677 {0, NULL, name, flags, SSL_CONF_TYPE_NONE}
679 /* See apps/include/opt.h if you change this table. */
680 /* The SSL_CONF_CMD_SWITCH should be the same order as ssl_cmd_switches */
681 static const ssl_conf_cmd_tbl ssl_conf_cmds[] = {
682 SSL_CONF_CMD_SWITCH("no_ssl3", 0),
683 SSL_CONF_CMD_SWITCH("no_tls1", 0),
684 SSL_CONF_CMD_SWITCH("no_tls1_1", 0),
685 SSL_CONF_CMD_SWITCH("no_tls1_2", 0),
686 SSL_CONF_CMD_SWITCH("no_tls1_3", 0),
687 SSL_CONF_CMD_SWITCH("bugs", 0),
688 SSL_CONF_CMD_SWITCH("no_comp", 0),
689 SSL_CONF_CMD_SWITCH("comp", 0),
690 SSL_CONF_CMD_SWITCH("ecdh_single", SSL_CONF_FLAG_SERVER),
691 SSL_CONF_CMD_SWITCH("no_ticket", 0),
692 SSL_CONF_CMD_SWITCH("serverpref", SSL_CONF_FLAG_SERVER),
693 SSL_CONF_CMD_SWITCH("legacy_renegotiation", 0),
694 SSL_CONF_CMD_SWITCH("client_renegotiation", SSL_CONF_FLAG_SERVER),
695 SSL_CONF_CMD_SWITCH("legacy_server_connect", SSL_CONF_FLAG_CLIENT),
696 SSL_CONF_CMD_SWITCH("no_renegotiation", 0),
697 SSL_CONF_CMD_SWITCH("no_resumption_on_reneg", SSL_CONF_FLAG_SERVER),
698 SSL_CONF_CMD_SWITCH("no_legacy_server_connect", SSL_CONF_FLAG_SERVER),
699 SSL_CONF_CMD_SWITCH("allow_no_dhe_kex", 0),
700 SSL_CONF_CMD_SWITCH("prioritize_chacha", SSL_CONF_FLAG_SERVER),
701 SSL_CONF_CMD_SWITCH("strict", 0),
702 SSL_CONF_CMD_SWITCH("no_middlebox", 0),
703 SSL_CONF_CMD_SWITCH("anti_replay", SSL_CONF_FLAG_SERVER),
704 SSL_CONF_CMD_SWITCH("no_anti_replay", SSL_CONF_FLAG_SERVER),
705 SSL_CONF_CMD_SWITCH("no_etm", 0),
706 SSL_CONF_CMD_STRING(SignatureAlgorithms, "sigalgs", 0),
707 SSL_CONF_CMD_STRING(ClientSignatureAlgorithms, "client_sigalgs", 0),
708 SSL_CONF_CMD_STRING(Curves, "curves", 0),
709 SSL_CONF_CMD_STRING(Groups, "groups", 0),
710 SSL_CONF_CMD_STRING(ECDHParameters, "named_curve", SSL_CONF_FLAG_SERVER),
711 SSL_CONF_CMD_STRING(CipherString, "cipher", 0),
712 SSL_CONF_CMD_STRING(Ciphersuites, "ciphersuites", 0),
713 SSL_CONF_CMD_STRING(Protocol, NULL, 0),
714 SSL_CONF_CMD_STRING(MinProtocol, "min_protocol", 0),
715 SSL_CONF_CMD_STRING(MaxProtocol, "max_protocol", 0),
716 SSL_CONF_CMD_STRING(Options, NULL, 0),
717 SSL_CONF_CMD_STRING(VerifyMode, NULL, 0),
718 SSL_CONF_CMD(Certificate, "cert", SSL_CONF_FLAG_CERTIFICATE,
720 SSL_CONF_CMD(PrivateKey, "key", SSL_CONF_FLAG_CERTIFICATE,
722 SSL_CONF_CMD(ServerInfoFile, NULL,
723 SSL_CONF_FLAG_SERVER | SSL_CONF_FLAG_CERTIFICATE,
725 SSL_CONF_CMD(ChainCAPath, "chainCApath", SSL_CONF_FLAG_CERTIFICATE,
727 SSL_CONF_CMD(ChainCAFile, "chainCAfile", SSL_CONF_FLAG_CERTIFICATE,
729 SSL_CONF_CMD(ChainCAStore, "chainCAstore", SSL_CONF_FLAG_CERTIFICATE,
730 SSL_CONF_TYPE_STORE),
731 SSL_CONF_CMD(VerifyCAPath, "verifyCApath", SSL_CONF_FLAG_CERTIFICATE,
733 SSL_CONF_CMD(VerifyCAFile, "verifyCAfile", SSL_CONF_FLAG_CERTIFICATE,
735 SSL_CONF_CMD(VerifyCAStore, "verifyCAstore", SSL_CONF_FLAG_CERTIFICATE,
736 SSL_CONF_TYPE_STORE),
737 SSL_CONF_CMD(RequestCAFile, "requestCAFile", SSL_CONF_FLAG_CERTIFICATE,
739 SSL_CONF_CMD(ClientCAFile, NULL,
740 SSL_CONF_FLAG_SERVER | SSL_CONF_FLAG_CERTIFICATE,
742 SSL_CONF_CMD(RequestCAPath, NULL, SSL_CONF_FLAG_CERTIFICATE,
744 SSL_CONF_CMD(ClientCAPath, NULL,
745 SSL_CONF_FLAG_SERVER | SSL_CONF_FLAG_CERTIFICATE,
747 SSL_CONF_CMD(RequestCAStore, "requestCAStore", SSL_CONF_FLAG_CERTIFICATE,
748 SSL_CONF_TYPE_STORE),
749 SSL_CONF_CMD(ClientCAStore, NULL,
750 SSL_CONF_FLAG_SERVER | SSL_CONF_FLAG_CERTIFICATE,
751 SSL_CONF_TYPE_STORE),
752 SSL_CONF_CMD(DHParameters, "dhparam",
753 SSL_CONF_FLAG_SERVER | SSL_CONF_FLAG_CERTIFICATE,
755 SSL_CONF_CMD_STRING(RecordPadding, "record_padding", 0),
756 SSL_CONF_CMD_STRING(NumTickets, "num_tickets", SSL_CONF_FLAG_SERVER),
759 /* Supported switches: must match order of switches in ssl_conf_cmds */
760 static const ssl_switch_tbl ssl_cmd_switches[] = {
761 {SSL_OP_NO_SSLv3, 0}, /* no_ssl3 */
762 {SSL_OP_NO_TLSv1, 0}, /* no_tls1 */
763 {SSL_OP_NO_TLSv1_1, 0}, /* no_tls1_1 */
764 {SSL_OP_NO_TLSv1_2, 0}, /* no_tls1_2 */
765 {SSL_OP_NO_TLSv1_3, 0}, /* no_tls1_3 */
766 {SSL_OP_ALL, 0}, /* bugs */
767 {SSL_OP_NO_COMPRESSION, 0}, /* no_comp */
768 {SSL_OP_NO_COMPRESSION, SSL_TFLAG_INV}, /* comp */
769 {SSL_OP_SINGLE_ECDH_USE, 0}, /* ecdh_single */
770 {SSL_OP_NO_TICKET, 0}, /* no_ticket */
771 {SSL_OP_CIPHER_SERVER_PREFERENCE, 0}, /* serverpref */
772 /* legacy_renegotiation */
773 {SSL_OP_ALLOW_UNSAFE_LEGACY_RENEGOTIATION, 0},
774 /* Allow client renegotiation */
775 {SSL_OP_ALLOW_CLIENT_RENEGOTIATION, 0},
776 /* legacy_server_connect */
777 {SSL_OP_LEGACY_SERVER_CONNECT, 0},
778 /* no_renegotiation */
779 {SSL_OP_NO_RENEGOTIATION, 0},
780 /* no_resumption_on_reneg */
781 {SSL_OP_NO_SESSION_RESUMPTION_ON_RENEGOTIATION, 0},
782 /* no_legacy_server_connect */
783 {SSL_OP_LEGACY_SERVER_CONNECT, SSL_TFLAG_INV},
784 /* allow_no_dhe_kex */
785 {SSL_OP_ALLOW_NO_DHE_KEX, 0},
786 /* chacha reprioritization */
787 {SSL_OP_PRIORITIZE_CHACHA, 0},
788 {SSL_CERT_FLAG_TLS_STRICT, SSL_TFLAG_CERT}, /* strict */
790 {SSL_OP_ENABLE_MIDDLEBOX_COMPAT, SSL_TFLAG_INV},
792 {SSL_OP_NO_ANTI_REPLAY, SSL_TFLAG_INV},
794 {SSL_OP_NO_ANTI_REPLAY, 0},
795 /* no Encrypt-then-Mac */
796 {SSL_OP_NO_ENCRYPT_THEN_MAC, 0},
799 static int ssl_conf_cmd_skip_prefix(SSL_CONF_CTX *cctx, const char **pcmd)
801 if (pcmd == NULL || *pcmd == NULL)
803 /* If a prefix is set, check and skip */
805 if (strlen(*pcmd) <= cctx->prefixlen)
807 if (cctx->flags & SSL_CONF_FLAG_CMDLINE &&
808 strncmp(*pcmd, cctx->prefix, cctx->prefixlen))
810 if (cctx->flags & SSL_CONF_FLAG_FILE &&
811 strncasecmp(*pcmd, cctx->prefix, cctx->prefixlen))
813 *pcmd += cctx->prefixlen;
814 } else if (cctx->flags & SSL_CONF_FLAG_CMDLINE) {
815 if (**pcmd != '-' || !(*pcmd)[1])
822 /* Determine if a command is allowed according to cctx flags */
823 static int ssl_conf_cmd_allowed(SSL_CONF_CTX *cctx, const ssl_conf_cmd_tbl * t)
825 unsigned int tfl = t->flags;
826 unsigned int cfl = cctx->flags;
827 if ((tfl & SSL_CONF_FLAG_SERVER) && !(cfl & SSL_CONF_FLAG_SERVER))
829 if ((tfl & SSL_CONF_FLAG_CLIENT) && !(cfl & SSL_CONF_FLAG_CLIENT))
831 if ((tfl & SSL_CONF_FLAG_CERTIFICATE)
832 && !(cfl & SSL_CONF_FLAG_CERTIFICATE))
837 static const ssl_conf_cmd_tbl *ssl_conf_cmd_lookup(SSL_CONF_CTX *cctx,
840 const ssl_conf_cmd_tbl *t;
845 /* Look for matching parameter name in table */
846 for (i = 0, t = ssl_conf_cmds; i < OSSL_NELEM(ssl_conf_cmds); i++, t++) {
847 if (ssl_conf_cmd_allowed(cctx, t)) {
848 if (cctx->flags & SSL_CONF_FLAG_CMDLINE) {
849 if (t->str_cmdline && strcmp(t->str_cmdline, cmd) == 0)
852 if (cctx->flags & SSL_CONF_FLAG_FILE) {
853 if (t->str_file && strcasecmp(t->str_file, cmd) == 0)
861 static int ctrl_switch_option(SSL_CONF_CTX *cctx, const ssl_conf_cmd_tbl * cmd)
863 /* Find index of command in table */
864 size_t idx = cmd - ssl_conf_cmds;
865 const ssl_switch_tbl *scmd;
866 /* Sanity check index */
867 if (idx >= OSSL_NELEM(ssl_cmd_switches))
869 /* Obtain switches entry with same index */
870 scmd = ssl_cmd_switches + idx;
871 ssl_set_option(cctx, scmd->name_flags, scmd->option_value, 1);
875 int SSL_CONF_cmd(SSL_CONF_CTX *cctx, const char *cmd, const char *value)
877 const ssl_conf_cmd_tbl *runcmd;
879 ERR_raise(ERR_LIB_SSL, SSL_R_INVALID_NULL_CMD_NAME);
883 if (!ssl_conf_cmd_skip_prefix(cctx, &cmd))
886 runcmd = ssl_conf_cmd_lookup(cctx, cmd);
890 if (runcmd->value_type == SSL_CONF_TYPE_NONE) {
891 return ctrl_switch_option(cctx, runcmd);
895 rv = runcmd->cmd(cctx, value);
900 if (cctx->flags & SSL_CONF_FLAG_SHOW_ERRORS)
901 ERR_raise_data(ERR_LIB_SSL, SSL_R_BAD_VALUE,
902 "cmd=%s, value=%s", cmd, value);
906 if (cctx->flags & SSL_CONF_FLAG_SHOW_ERRORS)
907 ERR_raise_data(ERR_LIB_SSL, SSL_R_UNKNOWN_CMD_NAME, "cmd=%s", cmd);
912 int SSL_CONF_cmd_argv(SSL_CONF_CTX *cctx, int *pargc, char ***pargv)
915 const char *arg = NULL, *argn;
917 if (pargc != NULL && *pargc == 0)
919 if (pargc == NULL || *pargc > 0)
923 if (pargc == NULL || *pargc > 1)
927 cctx->flags &= ~SSL_CONF_FLAG_FILE;
928 cctx->flags |= SSL_CONF_FLAG_CMDLINE;
929 rv = SSL_CONF_cmd(cctx, arg, argn);
931 /* Success: update pargc, pargv */
937 /* Unknown switch: indicate no arguments processed */
940 /* Some error occurred processing command, return fatal error */
946 int SSL_CONF_cmd_value_type(SSL_CONF_CTX *cctx, const char *cmd)
948 if (ssl_conf_cmd_skip_prefix(cctx, &cmd)) {
949 const ssl_conf_cmd_tbl *runcmd;
950 runcmd = ssl_conf_cmd_lookup(cctx, cmd);
952 return runcmd->value_type;
954 return SSL_CONF_TYPE_UNKNOWN;
957 SSL_CONF_CTX *SSL_CONF_CTX_new(void)
959 SSL_CONF_CTX *ret = OPENSSL_zalloc(sizeof(*ret));
964 int SSL_CONF_CTX_finish(SSL_CONF_CTX *cctx)
966 /* See if any certificates are missing private keys */
973 if (c && cctx->flags & SSL_CONF_FLAG_REQUIRE_PRIVATE) {
974 for (i = 0; i < SSL_PKEY_NUM; i++) {
975 const char *p = cctx->cert_filename[i];
977 * If missing private key try to load one from certificate file
979 if (p && !c->pkeys[i].privatekey) {
980 if (!cmd_PrivateKey(cctx, p))
987 SSL_set0_CA_list(cctx->ssl, cctx->canames);
989 SSL_CTX_set0_CA_list(cctx->ctx, cctx->canames);
991 sk_X509_NAME_pop_free(cctx->canames, X509_NAME_free);
992 cctx->canames = NULL;
997 void SSL_CONF_CTX_free(SSL_CONF_CTX *cctx)
1001 for (i = 0; i < SSL_PKEY_NUM; i++)
1002 OPENSSL_free(cctx->cert_filename[i]);
1003 OPENSSL_free(cctx->prefix);
1004 sk_X509_NAME_pop_free(cctx->canames, X509_NAME_free);
1009 unsigned int SSL_CONF_CTX_set_flags(SSL_CONF_CTX *cctx, unsigned int flags)
1011 cctx->flags |= flags;
1015 unsigned int SSL_CONF_CTX_clear_flags(SSL_CONF_CTX *cctx, unsigned int flags)
1017 cctx->flags &= ~flags;
1021 int SSL_CONF_CTX_set1_prefix(SSL_CONF_CTX *cctx, const char *pre)
1025 tmp = OPENSSL_strdup(pre);
1029 OPENSSL_free(cctx->prefix);
1032 cctx->prefixlen = strlen(tmp);
1034 cctx->prefixlen = 0;
1038 void SSL_CONF_CTX_set_ssl(SSL_CONF_CTX *cctx, SSL *ssl)
1043 cctx->poptions = &ssl->options;
1044 cctx->min_version = &ssl->min_proto_version;
1045 cctx->max_version = &ssl->max_proto_version;
1046 cctx->pcert_flags = &ssl->cert->cert_flags;
1047 cctx->pvfy_flags = &ssl->verify_mode;
1049 cctx->poptions = NULL;
1050 cctx->min_version = NULL;
1051 cctx->max_version = NULL;
1052 cctx->pcert_flags = NULL;
1053 cctx->pvfy_flags = NULL;
1057 void SSL_CONF_CTX_set_ssl_ctx(SSL_CONF_CTX *cctx, SSL_CTX *ctx)
1062 cctx->poptions = &ctx->options;
1063 cctx->min_version = &ctx->min_proto_version;
1064 cctx->max_version = &ctx->max_proto_version;
1065 cctx->pcert_flags = &ctx->cert->cert_flags;
1066 cctx->pvfy_flags = &ctx->verify_mode;
1068 cctx->poptions = NULL;
1069 cctx->min_version = NULL;
1070 cctx->max_version = NULL;
1071 cctx->pcert_flags = NULL;
1072 cctx->pvfy_flags = NULL;