2 * Copyright 2012-2016 The OpenSSL Project Authors. All Rights Reserved.
4 * Licensed under the OpenSSL license (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
12 #include <openssl/conf.h>
13 #include <openssl/objects.h>
14 #include <openssl/dh.h>
17 * structure holding name tables. This is used for permitted elements in lists
24 unsigned int name_flags;
25 unsigned long option_value;
28 /* Switch table: use for single command line switches like no_tls2 */
30 unsigned long option_value;
31 unsigned int name_flags;
34 /* Sense of name is inverted e.g. "TLSv1" will clear SSL_OP_NO_TLSv1 */
35 #define SSL_TFLAG_INV 0x1
36 /* Mask for type of flag referred to */
37 #define SSL_TFLAG_TYPE_MASK 0xf00
38 /* Flag is for options */
39 #define SSL_TFLAG_OPTION 0x000
40 /* Flag is for cert_flags */
41 #define SSL_TFLAG_CERT 0x100
42 /* Flag is for verify mode */
43 #define SSL_TFLAG_VFY 0x200
44 /* Option can only be used for clients */
45 #define SSL_TFLAG_CLIENT SSL_CONF_FLAG_CLIENT
46 /* Option can only be used for servers */
47 #define SSL_TFLAG_SERVER SSL_CONF_FLAG_SERVER
48 #define SSL_TFLAG_BOTH (SSL_TFLAG_CLIENT|SSL_TFLAG_SERVER)
50 #define SSL_FLAG_TBL(str, flag) \
51 {str, (int)(sizeof(str) - 1), SSL_TFLAG_BOTH, flag}
52 #define SSL_FLAG_TBL_SRV(str, flag) \
53 {str, (int)(sizeof(str) - 1), SSL_TFLAG_SERVER, flag}
54 #define SSL_FLAG_TBL_CLI(str, flag) \
55 {str, (int)(sizeof(str) - 1), SSL_TFLAG_CLIENT, flag}
56 #define SSL_FLAG_TBL_INV(str, flag) \
57 {str, (int)(sizeof(str) - 1), SSL_TFLAG_INV|SSL_TFLAG_BOTH, flag}
58 #define SSL_FLAG_TBL_SRV_INV(str, flag) \
59 {str, (int)(sizeof(str) - 1), SSL_TFLAG_INV|SSL_TFLAG_SERVER, flag}
60 #define SSL_FLAG_TBL_CERT(str, flag) \
61 {str, (int)(sizeof(str) - 1), SSL_TFLAG_CERT|SSL_TFLAG_BOTH, flag}
63 #define SSL_FLAG_VFY_CLI(str, flag) \
64 {str, (int)(sizeof(str) - 1), SSL_TFLAG_VFY | SSL_TFLAG_CLIENT, flag}
65 #define SSL_FLAG_VFY_SRV(str, flag) \
66 {str, (int)(sizeof(str) - 1), SSL_TFLAG_VFY | SSL_TFLAG_SERVER, flag}
69 * Opaque structure containing SSL configuration context.
72 struct ssl_conf_ctx_st {
74 * Various flags indicating (among other things) which options we will
78 /* Prefix and length of commands */
81 /* SSL_CTX or SSL structure to perform operations on */
84 /* Pointer to SSL or SSL_CTX options field or NULL if none */
86 /* Certificate filenames for each type */
87 char *cert_filename[SSL_PKEY_NUM];
88 /* Pointer to SSL or SSL_CTX cert_flags or NULL if none */
89 uint32_t *pcert_flags;
90 /* Pointer to SSL or SSL_CTX verify_mode or NULL if none */
92 /* Pointer to SSL or SSL_CTX min_version field or NULL if none */
94 /* Pointer to SSL or SSL_CTX max_version field or NULL if none */
96 /* Current flag table being worked on */
97 const ssl_flag_tbl *tbl;
100 /* Client CA names */
101 STACK_OF(X509_NAME) *canames;
104 static void ssl_set_option(SSL_CONF_CTX *cctx, unsigned int name_flags,
105 unsigned long option_value, int onoff)
108 if (cctx->poptions == NULL)
110 if (name_flags & SSL_TFLAG_INV)
112 switch (name_flags & SSL_TFLAG_TYPE_MASK) {
115 pflags = cctx->pcert_flags;
119 pflags = cctx->pvfy_flags;
122 case SSL_TFLAG_OPTION:
123 pflags = cctx->poptions;
131 *pflags |= option_value;
133 *pflags &= ~option_value;
136 static int ssl_match_option(SSL_CONF_CTX *cctx, const ssl_flag_tbl *tbl,
137 const char *name, int namelen, int onoff)
139 /* If name not relevant for context skip */
140 if (!(cctx->flags & tbl->name_flags & SSL_TFLAG_BOTH))
143 if (strcmp(tbl->name, name))
145 } else if (tbl->namelen != namelen || strncasecmp(tbl->name, name, namelen))
147 ssl_set_option(cctx, tbl->name_flags, tbl->option_value, onoff);
151 static int ssl_set_option_list(const char *elem, int len, void *usr)
153 SSL_CONF_CTX *cctx = usr;
155 const ssl_flag_tbl *tbl;
158 * len == -1 indicates not being called in list context, just for single
159 * command line switches, so don't allow +, -.
168 } else if (*elem == '-') {
174 for (i = 0, tbl = cctx->tbl; i < cctx->ntbl; i++, tbl++) {
175 if (ssl_match_option(cctx, tbl, elem, len, onoff))
181 /* Set supported signature algorithms */
182 static int cmd_SignatureAlgorithms(SSL_CONF_CTX *cctx, const char *value)
186 rv = SSL_set1_sigalgs_list(cctx->ssl, value);
187 /* NB: ctx == NULL performs syntax checking only */
189 rv = SSL_CTX_set1_sigalgs_list(cctx->ctx, value);
193 /* Set supported client signature algorithms */
194 static int cmd_ClientSignatureAlgorithms(SSL_CONF_CTX *cctx, const char *value)
198 rv = SSL_set1_client_sigalgs_list(cctx->ssl, value);
199 /* NB: ctx == NULL performs syntax checking only */
201 rv = SSL_CTX_set1_client_sigalgs_list(cctx->ctx, value);
205 static int cmd_Groups(SSL_CONF_CTX *cctx, const char *value)
209 rv = SSL_set1_groups_list(cctx->ssl, value);
210 /* NB: ctx == NULL performs syntax checking only */
212 rv = SSL_CTX_set1_groups_list(cctx->ctx, value);
216 /* This is the old name for cmd_Groups - retained for backwards compatibility */
217 static int cmd_Curves(SSL_CONF_CTX *cctx, const char *value)
219 return cmd_Groups(cctx, value);
222 #ifndef OPENSSL_NO_EC
223 /* ECDH temporary parameters */
224 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)
234 if ((cctx->flags & SSL_CONF_FLAG_CMDLINE) &&
235 strcmp(value, "auto") == 0)
238 nid = EC_curve_nist2nid(value);
239 if (nid == NID_undef)
240 nid = OBJ_sn2nid(value);
243 ecdh = EC_KEY_new_by_curve_name(nid);
247 rv = SSL_CTX_set_tmp_ecdh(cctx->ctx, ecdh);
249 rv = SSL_set_tmp_ecdh(cctx->ssl, ecdh);
255 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_Protocol(SSL_CONF_CTX *cctx, const char *value)
267 static const ssl_flag_tbl ssl_protocol_list[] = {
268 SSL_FLAG_TBL_INV("ALL", SSL_OP_NO_SSL_MASK),
269 SSL_FLAG_TBL_INV("SSLv2", SSL_OP_NO_SSLv2),
270 SSL_FLAG_TBL_INV("SSLv3", SSL_OP_NO_SSLv3),
271 SSL_FLAG_TBL_INV("TLSv1", SSL_OP_NO_TLSv1),
272 SSL_FLAG_TBL_INV("TLSv1.1", SSL_OP_NO_TLSv1_1),
273 SSL_FLAG_TBL_INV("TLSv1.2", SSL_OP_NO_TLSv1_2),
274 SSL_FLAG_TBL_INV("TLSv1.3", SSL_OP_NO_TLSv1_3),
275 SSL_FLAG_TBL_INV("DTLSv1", SSL_OP_NO_DTLSv1),
276 SSL_FLAG_TBL_INV("DTLSv1.2", SSL_OP_NO_DTLSv1_2)
278 cctx->tbl = ssl_protocol_list;
279 cctx->ntbl = OSSL_NELEM(ssl_protocol_list);
280 return CONF_parse_list(value, ',', 1, ssl_set_option_list, cctx);
284 * protocol_from_string - converts a protocol version string to a number
286 * Returns -1 on failure or the version on success
288 static int protocol_from_string(const char *value)
290 struct protocol_versions {
294 static const struct protocol_versions versions[] = {
296 {"SSLv3", SSL3_VERSION},
297 {"TLSv1", TLS1_VERSION},
298 {"TLSv1.1", TLS1_1_VERSION},
299 {"TLSv1.2", TLS1_2_VERSION},
300 {"TLSv1.3", TLS1_3_VERSION},
301 {"DTLSv1", DTLS1_VERSION},
302 {"DTLSv1.2", DTLS1_2_VERSION}
305 size_t n = OSSL_NELEM(versions);
307 for (i = 0; i < n; i++)
308 if (strcmp(versions[i].name, value) == 0)
309 return versions[i].version;
313 static int min_max_proto(SSL_CONF_CTX *cctx, const char *value, int *bound)
318 if (cctx->ctx != NULL)
319 method_version = cctx->ctx->method->version;
320 else if (cctx->ssl != NULL)
321 method_version = cctx->ssl->ctx->method->version;
324 if ((new_version = protocol_from_string(value)) < 0)
326 return ssl_set_version_bound(method_version, new_version, bound);
330 * cmd_MinProtocol - Set min protocol version
331 * @cctx: config structure to save settings in
332 * @value: The min protocol version in string form
334 * Returns 1 on success and 0 on failure.
336 static int cmd_MinProtocol(SSL_CONF_CTX *cctx, const char *value)
338 return min_max_proto(cctx, value, cctx->min_version);
342 * cmd_MaxProtocol - Set max protocol version
343 * @cctx: config structure to save settings in
344 * @value: The max protocol version in string form
346 * Returns 1 on success and 0 on failure.
348 static int cmd_MaxProtocol(SSL_CONF_CTX *cctx, const char *value)
350 return min_max_proto(cctx, value, cctx->max_version);
353 static int cmd_Options(SSL_CONF_CTX *cctx, const char *value)
355 static const ssl_flag_tbl ssl_option_list[] = {
356 SSL_FLAG_TBL_INV("SessionTicket", SSL_OP_NO_TICKET),
357 SSL_FLAG_TBL_INV("EmptyFragments",
358 SSL_OP_DONT_INSERT_EMPTY_FRAGMENTS),
359 SSL_FLAG_TBL("Bugs", SSL_OP_ALL),
360 SSL_FLAG_TBL_INV("Compression", SSL_OP_NO_COMPRESSION),
361 SSL_FLAG_TBL_SRV("ServerPreference", SSL_OP_CIPHER_SERVER_PREFERENCE),
362 SSL_FLAG_TBL_SRV("NoResumptionOnRenegotiation",
363 SSL_OP_NO_SESSION_RESUMPTION_ON_RENEGOTIATION),
364 SSL_FLAG_TBL_SRV("DHSingle", SSL_OP_SINGLE_DH_USE),
365 SSL_FLAG_TBL_SRV("ECDHSingle", SSL_OP_SINGLE_ECDH_USE),
366 SSL_FLAG_TBL("UnsafeLegacyRenegotiation",
367 SSL_OP_ALLOW_UNSAFE_LEGACY_RENEGOTIATION),
368 SSL_FLAG_TBL_INV("EncryptThenMac", SSL_OP_NO_ENCRYPT_THEN_MAC),
369 SSL_FLAG_TBL("NoRenegotiation", SSL_OP_NO_RENEGOTIATION),
370 SSL_FLAG_TBL("AllowNoDHEKEX", SSL_OP_ALLOW_NO_DHE_KEX)
374 cctx->tbl = ssl_option_list;
375 cctx->ntbl = OSSL_NELEM(ssl_option_list);
376 return CONF_parse_list(value, ',', 1, ssl_set_option_list, cctx);
379 static int cmd_VerifyMode(SSL_CONF_CTX *cctx, const char *value)
381 static const ssl_flag_tbl ssl_vfy_list[] = {
382 SSL_FLAG_VFY_CLI("Peer", SSL_VERIFY_PEER),
383 SSL_FLAG_VFY_SRV("Request", SSL_VERIFY_PEER),
384 SSL_FLAG_VFY_SRV("Require",
385 SSL_VERIFY_PEER | SSL_VERIFY_FAIL_IF_NO_PEER_CERT),
386 SSL_FLAG_VFY_SRV("Once", SSL_VERIFY_PEER | SSL_VERIFY_CLIENT_ONCE)
390 cctx->tbl = ssl_vfy_list;
391 cctx->ntbl = OSSL_NELEM(ssl_vfy_list);
392 return CONF_parse_list(value, ',', 1, ssl_set_option_list, cctx);
395 static int cmd_Certificate(SSL_CONF_CTX *cctx, const char *value)
400 rv = SSL_CTX_use_certificate_chain_file(cctx->ctx, value);
404 rv = SSL_use_certificate_chain_file(cctx->ssl, value);
407 if (rv > 0 && c && cctx->flags & SSL_CONF_FLAG_REQUIRE_PRIVATE) {
408 char **pfilename = &cctx->cert_filename[c->key - c->pkeys];
409 OPENSSL_free(*pfilename);
410 *pfilename = OPENSSL_strdup(value);
418 static int cmd_PrivateKey(SSL_CONF_CTX *cctx, const char *value)
421 if (!(cctx->flags & SSL_CONF_FLAG_CERTIFICATE))
424 rv = SSL_CTX_use_PrivateKey_file(cctx->ctx, value, SSL_FILETYPE_PEM);
426 rv = SSL_use_PrivateKey_file(cctx->ssl, value, SSL_FILETYPE_PEM);
430 static int cmd_ServerInfoFile(SSL_CONF_CTX *cctx, const char *value)
434 rv = SSL_CTX_use_serverinfo_file(cctx->ctx, value);
438 static int do_store(SSL_CONF_CTX *cctx,
439 const char *CAfile, const char *CApath, int verify_store)
444 cert = cctx->ctx->cert;
446 cert = cctx->ssl->cert;
449 st = verify_store ? &cert->verify_store : &cert->chain_store;
451 *st = X509_STORE_new();
455 return X509_STORE_load_locations(*st, CAfile, CApath) > 0;
458 static int cmd_ChainCAPath(SSL_CONF_CTX *cctx, const char *value)
460 return do_store(cctx, NULL, value, 0);
463 static int cmd_ChainCAFile(SSL_CONF_CTX *cctx, const char *value)
465 return do_store(cctx, value, NULL, 0);
468 static int cmd_VerifyCAPath(SSL_CONF_CTX *cctx, const char *value)
470 return do_store(cctx, NULL, value, 1);
473 static int cmd_VerifyCAFile(SSL_CONF_CTX *cctx, const char *value)
475 return do_store(cctx, value, NULL, 1);
478 static int cmd_RequestCAFile(SSL_CONF_CTX *cctx, const char *value)
480 if (cctx->canames == NULL)
481 cctx->canames = sk_X509_NAME_new_null();
482 if (cctx->canames == NULL)
484 return SSL_add_file_cert_subjects_to_stack(cctx->canames, value);
487 static int cmd_ClientCAFile(SSL_CONF_CTX *cctx, const char *value)
489 return cmd_RequestCAFile(cctx, value);
492 static int cmd_RequestCAPath(SSL_CONF_CTX *cctx, const char *value)
494 if (cctx->canames == NULL)
495 cctx->canames = sk_X509_NAME_new_null();
496 if (cctx->canames == NULL)
498 return SSL_add_dir_cert_subjects_to_stack(cctx->canames, value);
501 static int cmd_ClientCAPath(SSL_CONF_CTX *cctx, const char *value)
503 return cmd_RequestCAPath(cctx, value);
506 #ifndef OPENSSL_NO_DH
507 static int cmd_DHParameters(SSL_CONF_CTX *cctx, const char *value)
512 if (cctx->ctx || cctx->ssl) {
513 in = BIO_new(BIO_s_file());
516 if (BIO_read_filename(in, value) <= 0)
518 dh = PEM_read_bio_DHparams(in, NULL, NULL, NULL);
524 rv = SSL_CTX_set_tmp_dh(cctx->ctx, dh);
526 rv = SSL_set_tmp_dh(cctx->ssl, dh);
534 static int cmd_RecordPadding(SSL_CONF_CTX *cctx, const char *value)
537 int block_size = atoi(value);
540 * All we care about is a non-negative value,
541 * the setters check the range
543 if (block_size >= 0) {
545 rv = SSL_CTX_set_block_padding(cctx->ctx, block_size);
547 rv = SSL_set_block_padding(cctx->ssl, block_size);
553 int (*cmd) (SSL_CONF_CTX *cctx, const char *value);
554 const char *str_file;
555 const char *str_cmdline;
556 unsigned short flags;
557 unsigned short value_type;
560 /* Table of supported parameters */
562 #define SSL_CONF_CMD(name, cmdopt, flags, type) \
563 {cmd_##name, #name, cmdopt, flags, type}
565 #define SSL_CONF_CMD_STRING(name, cmdopt, flags) \
566 SSL_CONF_CMD(name, cmdopt, flags, SSL_CONF_TYPE_STRING)
568 #define SSL_CONF_CMD_SWITCH(name, flags) \
569 {0, NULL, name, flags, SSL_CONF_TYPE_NONE}
571 /* See apps/apps.h if you change this table. */
572 static const ssl_conf_cmd_tbl ssl_conf_cmds[] = {
573 SSL_CONF_CMD_SWITCH("no_ssl3", 0),
574 SSL_CONF_CMD_SWITCH("no_tls1", 0),
575 SSL_CONF_CMD_SWITCH("no_tls1_1", 0),
576 SSL_CONF_CMD_SWITCH("no_tls1_2", 0),
577 SSL_CONF_CMD_SWITCH("no_tls1_3", 0),
578 SSL_CONF_CMD_SWITCH("bugs", 0),
579 SSL_CONF_CMD_SWITCH("no_comp", 0),
580 SSL_CONF_CMD_SWITCH("comp", 0),
581 SSL_CONF_CMD_SWITCH("ecdh_single", SSL_CONF_FLAG_SERVER),
582 SSL_CONF_CMD_SWITCH("no_ticket", 0),
583 SSL_CONF_CMD_SWITCH("serverpref", SSL_CONF_FLAG_SERVER),
584 SSL_CONF_CMD_SWITCH("legacy_renegotiation", 0),
585 SSL_CONF_CMD_SWITCH("legacy_server_connect", SSL_CONF_FLAG_SERVER),
586 SSL_CONF_CMD_SWITCH("no_renegotiation", 0),
587 SSL_CONF_CMD_SWITCH("no_resumption_on_reneg", SSL_CONF_FLAG_SERVER),
588 SSL_CONF_CMD_SWITCH("no_legacy_server_connect", SSL_CONF_FLAG_SERVER),
589 SSL_CONF_CMD_SWITCH("allow_no_dhe_kex", 0),
590 SSL_CONF_CMD_SWITCH("strict", 0),
591 SSL_CONF_CMD_STRING(SignatureAlgorithms, "sigalgs", 0),
592 SSL_CONF_CMD_STRING(ClientSignatureAlgorithms, "client_sigalgs", 0),
593 SSL_CONF_CMD_STRING(Curves, "curves", 0),
594 SSL_CONF_CMD_STRING(Groups, "groups", 0),
595 #ifndef OPENSSL_NO_EC
596 SSL_CONF_CMD_STRING(ECDHParameters, "named_curve", SSL_CONF_FLAG_SERVER),
598 SSL_CONF_CMD_STRING(CipherString, "cipher", 0),
599 SSL_CONF_CMD_STRING(Protocol, NULL, 0),
600 SSL_CONF_CMD_STRING(MinProtocol, "min_protocol", 0),
601 SSL_CONF_CMD_STRING(MaxProtocol, "max_protocol", 0),
602 SSL_CONF_CMD_STRING(Options, NULL, 0),
603 SSL_CONF_CMD_STRING(VerifyMode, NULL, 0),
604 SSL_CONF_CMD(Certificate, "cert", SSL_CONF_FLAG_CERTIFICATE,
606 SSL_CONF_CMD(PrivateKey, "key", SSL_CONF_FLAG_CERTIFICATE,
608 SSL_CONF_CMD(ServerInfoFile, NULL,
609 SSL_CONF_FLAG_SERVER | SSL_CONF_FLAG_CERTIFICATE,
611 SSL_CONF_CMD(ChainCAPath, "chainCApath", SSL_CONF_FLAG_CERTIFICATE,
613 SSL_CONF_CMD(ChainCAFile, "chainCAfile", SSL_CONF_FLAG_CERTIFICATE,
615 SSL_CONF_CMD(VerifyCAPath, "verifyCApath", SSL_CONF_FLAG_CERTIFICATE,
617 SSL_CONF_CMD(VerifyCAFile, "verifyCAfile", SSL_CONF_FLAG_CERTIFICATE,
619 SSL_CONF_CMD(RequestCAFile, "requestCAFile", SSL_CONF_FLAG_CERTIFICATE,
621 SSL_CONF_CMD(ClientCAFile, NULL,
622 SSL_CONF_FLAG_SERVER | SSL_CONF_FLAG_CERTIFICATE,
624 SSL_CONF_CMD(RequestCAPath, NULL, SSL_CONF_FLAG_CERTIFICATE,
626 SSL_CONF_CMD(ClientCAPath, NULL,
627 SSL_CONF_FLAG_SERVER | SSL_CONF_FLAG_CERTIFICATE,
629 #ifndef OPENSSL_NO_DH
630 SSL_CONF_CMD(DHParameters, "dhparam",
631 SSL_CONF_FLAG_SERVER | SSL_CONF_FLAG_CERTIFICATE,
634 SSL_CONF_CMD_STRING(RecordPadding, "record_padding", 0)
637 /* Supported switches: must match order of switches in ssl_conf_cmds */
638 static const ssl_switch_tbl ssl_cmd_switches[] = {
639 {SSL_OP_NO_SSLv3, 0}, /* no_ssl3 */
640 {SSL_OP_NO_TLSv1, 0}, /* no_tls1 */
641 {SSL_OP_NO_TLSv1_1, 0}, /* no_tls1_1 */
642 {SSL_OP_NO_TLSv1_2, 0}, /* no_tls1_2 */
643 {SSL_OP_NO_TLSv1_3, 0}, /* no_tls1_3 */
644 {SSL_OP_ALL, 0}, /* bugs */
645 {SSL_OP_NO_COMPRESSION, 0}, /* no_comp */
646 {SSL_OP_NO_COMPRESSION, SSL_TFLAG_INV}, /* comp */
647 {SSL_OP_SINGLE_ECDH_USE, 0}, /* ecdh_single */
648 {SSL_OP_NO_TICKET, 0}, /* no_ticket */
649 {SSL_OP_CIPHER_SERVER_PREFERENCE, 0}, /* serverpref */
650 /* legacy_renegotiation */
651 {SSL_OP_ALLOW_UNSAFE_LEGACY_RENEGOTIATION, 0},
652 /* legacy_server_connect */
653 {SSL_OP_LEGACY_SERVER_CONNECT, 0},
654 /* no_renegotiation */
655 {SSL_OP_NO_RENEGOTIATION, 0},
656 /* no_resumption_on_reneg */
657 {SSL_OP_NO_SESSION_RESUMPTION_ON_RENEGOTIATION, 0},
658 /* no_legacy_server_connect */
659 {SSL_OP_LEGACY_SERVER_CONNECT, SSL_TFLAG_INV},
660 /* allow_no_dhe_kex */
661 {SSL_OP_ALLOW_NO_DHE_KEX, 0},
662 {SSL_CERT_FLAG_TLS_STRICT, SSL_TFLAG_CERT}, /* strict */
665 static int ssl_conf_cmd_skip_prefix(SSL_CONF_CTX *cctx, const char **pcmd)
669 /* If a prefix is set, check and skip */
671 if (strlen(*pcmd) <= cctx->prefixlen)
673 if (cctx->flags & SSL_CONF_FLAG_CMDLINE &&
674 strncmp(*pcmd, cctx->prefix, cctx->prefixlen))
676 if (cctx->flags & SSL_CONF_FLAG_FILE &&
677 strncasecmp(*pcmd, cctx->prefix, cctx->prefixlen))
679 *pcmd += cctx->prefixlen;
680 } else if (cctx->flags & SSL_CONF_FLAG_CMDLINE) {
681 if (**pcmd != '-' || !(*pcmd)[1])
688 /* Determine if a command is allowed according to cctx flags */
689 static int ssl_conf_cmd_allowed(SSL_CONF_CTX *cctx, const ssl_conf_cmd_tbl * t)
691 unsigned int tfl = t->flags;
692 unsigned int cfl = cctx->flags;
693 if ((tfl & SSL_CONF_FLAG_SERVER) && !(cfl & SSL_CONF_FLAG_SERVER))
695 if ((tfl & SSL_CONF_FLAG_CLIENT) && !(cfl & SSL_CONF_FLAG_CLIENT))
697 if ((tfl & SSL_CONF_FLAG_CERTIFICATE)
698 && !(cfl & SSL_CONF_FLAG_CERTIFICATE))
703 static const ssl_conf_cmd_tbl *ssl_conf_cmd_lookup(SSL_CONF_CTX *cctx,
706 const ssl_conf_cmd_tbl *t;
711 /* Look for matching parameter name in table */
712 for (i = 0, t = ssl_conf_cmds; i < OSSL_NELEM(ssl_conf_cmds); i++, t++) {
713 if (ssl_conf_cmd_allowed(cctx, t)) {
714 if (cctx->flags & SSL_CONF_FLAG_CMDLINE) {
715 if (t->str_cmdline && strcmp(t->str_cmdline, cmd) == 0)
718 if (cctx->flags & SSL_CONF_FLAG_FILE) {
719 if (t->str_file && strcasecmp(t->str_file, cmd) == 0)
727 static int ctrl_switch_option(SSL_CONF_CTX *cctx, const ssl_conf_cmd_tbl * cmd)
729 /* Find index of command in table */
730 size_t idx = cmd - ssl_conf_cmds;
731 const ssl_switch_tbl *scmd;
732 /* Sanity check index */
733 if (idx >= OSSL_NELEM(ssl_cmd_switches))
735 /* Obtain switches entry with same index */
736 scmd = ssl_cmd_switches + idx;
737 ssl_set_option(cctx, scmd->name_flags, scmd->option_value, 1);
741 int SSL_CONF_cmd(SSL_CONF_CTX *cctx, const char *cmd, const char *value)
743 const ssl_conf_cmd_tbl *runcmd;
745 SSLerr(SSL_F_SSL_CONF_CMD, SSL_R_INVALID_NULL_CMD_NAME);
749 if (!ssl_conf_cmd_skip_prefix(cctx, &cmd))
752 runcmd = ssl_conf_cmd_lookup(cctx, cmd);
756 if (runcmd->value_type == SSL_CONF_TYPE_NONE) {
757 return ctrl_switch_option(cctx, runcmd);
761 rv = runcmd->cmd(cctx, value);
766 if (cctx->flags & SSL_CONF_FLAG_SHOW_ERRORS) {
767 SSLerr(SSL_F_SSL_CONF_CMD, SSL_R_BAD_VALUE);
768 ERR_add_error_data(4, "cmd=", cmd, ", value=", value);
773 if (cctx->flags & SSL_CONF_FLAG_SHOW_ERRORS) {
774 SSLerr(SSL_F_SSL_CONF_CMD, SSL_R_UNKNOWN_CMD_NAME);
775 ERR_add_error_data(2, "cmd=", cmd);
781 int SSL_CONF_cmd_argv(SSL_CONF_CTX *cctx, int *pargc, char ***pargv)
784 const char *arg = NULL, *argn;
785 if (pargc && *pargc == 0)
787 if (!pargc || *pargc > 0)
791 if (!pargc || *pargc > 1)
795 cctx->flags &= ~SSL_CONF_FLAG_FILE;
796 cctx->flags |= SSL_CONF_FLAG_CMDLINE;
797 rv = SSL_CONF_cmd(cctx, arg, argn);
799 /* Success: update pargc, pargv */
805 /* Unknown switch: indicate no arguments processed */
808 /* Some error occurred processing command, return fatal error */
814 int SSL_CONF_cmd_value_type(SSL_CONF_CTX *cctx, const char *cmd)
816 if (ssl_conf_cmd_skip_prefix(cctx, &cmd)) {
817 const ssl_conf_cmd_tbl *runcmd;
818 runcmd = ssl_conf_cmd_lookup(cctx, cmd);
820 return runcmd->value_type;
822 return SSL_CONF_TYPE_UNKNOWN;
825 SSL_CONF_CTX *SSL_CONF_CTX_new(void)
827 SSL_CONF_CTX *ret = OPENSSL_zalloc(sizeof(*ret));
832 int SSL_CONF_CTX_finish(SSL_CONF_CTX *cctx)
834 /* See if any certificates are missing private keys */
841 if (c && cctx->flags & SSL_CONF_FLAG_REQUIRE_PRIVATE) {
842 for (i = 0; i < SSL_PKEY_NUM; i++) {
843 const char *p = cctx->cert_filename[i];
845 * If missing private key try to load one from certificate file
847 if (p && !c->pkeys[i].privatekey) {
848 if (!cmd_PrivateKey(cctx, p))
855 SSL_set0_CA_list(cctx->ssl, cctx->canames);
857 SSL_CTX_set0_CA_list(cctx->ctx, cctx->canames);
859 sk_X509_NAME_pop_free(cctx->canames, X509_NAME_free);
860 cctx->canames = NULL;
865 void SSL_CONF_CTX_free(SSL_CONF_CTX *cctx)
869 for (i = 0; i < SSL_PKEY_NUM; i++)
870 OPENSSL_free(cctx->cert_filename[i]);
871 OPENSSL_free(cctx->prefix);
872 sk_X509_NAME_pop_free(cctx->canames, X509_NAME_free);
877 unsigned int SSL_CONF_CTX_set_flags(SSL_CONF_CTX *cctx, unsigned int flags)
879 cctx->flags |= flags;
883 unsigned int SSL_CONF_CTX_clear_flags(SSL_CONF_CTX *cctx, unsigned int flags)
885 cctx->flags &= ~flags;
889 int SSL_CONF_CTX_set1_prefix(SSL_CONF_CTX *cctx, const char *pre)
893 tmp = OPENSSL_strdup(pre);
897 OPENSSL_free(cctx->prefix);
900 cctx->prefixlen = strlen(tmp);
906 void SSL_CONF_CTX_set_ssl(SSL_CONF_CTX *cctx, SSL *ssl)
911 cctx->poptions = &ssl->options;
912 cctx->min_version = &ssl->min_proto_version;
913 cctx->max_version = &ssl->max_proto_version;
914 cctx->pcert_flags = &ssl->cert->cert_flags;
915 cctx->pvfy_flags = &ssl->verify_mode;
917 cctx->poptions = NULL;
918 cctx->min_version = NULL;
919 cctx->max_version = NULL;
920 cctx->pcert_flags = NULL;
921 cctx->pvfy_flags = NULL;
925 void SSL_CONF_CTX_set_ssl_ctx(SSL_CONF_CTX *cctx, SSL_CTX *ctx)
930 cctx->poptions = &ctx->options;
931 cctx->min_version = &ctx->min_proto_version;
932 cctx->max_version = &ctx->max_proto_version;
933 cctx->pcert_flags = &ctx->cert->cert_flags;
934 cctx->pvfy_flags = &ctx->verify_mode;
936 cctx->poptions = NULL;
937 cctx->min_version = NULL;
938 cctx->max_version = NULL;
939 cctx->pcert_flags = NULL;
940 cctx->pvfy_flags = NULL;