2 * ! \file ssl/ssl_conf.c \brief SSL configuration functions
4 /* ====================================================================
5 * Copyright (c) 2012 The OpenSSL Project. All rights reserved.
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
11 * 1. Redistributions of source code must retain the above copyright
12 * notice, this list of conditions and the following disclaimer.
14 * 2. Redistributions in binary form must reproduce the above copyright
15 * notice, this list of conditions and the following disclaimer in
16 * the documentation and/or other materials provided with the
19 * 3. All advertising materials mentioning features or use of this
20 * software must display the following acknowledgment:
21 * "This product includes software developed by the OpenSSL Project
22 * for use in the OpenSSL Toolkit. (http://www.openssl.org/)"
24 * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
25 * endorse or promote products derived from this software without
26 * prior written permission. For written permission, please contact
27 * openssl-core@openssl.org.
29 * 5. Products derived from this software may not be called "OpenSSL"
30 * nor may "OpenSSL" appear in their names without prior written
31 * permission of the OpenSSL Project.
33 * 6. Redistributions of any form whatsoever must retain the following
35 * "This product includes software developed by the OpenSSL Project
36 * for use in the OpenSSL Toolkit (http://www.openssl.org/)"
38 * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
39 * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
40 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
41 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OpenSSL PROJECT OR
42 * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
43 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
44 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
45 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
46 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
47 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
48 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
49 * OF THE POSSIBILITY OF SUCH DAMAGE.
50 * ====================================================================
52 * This product includes cryptographic software written by Eric Young
53 * (eay@cryptsoft.com). This product includes software written by Tim
54 * Hudson (tjh@cryptsoft.com).
60 #include <openssl/conf.h>
61 #include <openssl/objects.h>
62 #include <openssl/dh.h>
65 * structure holding name tables. This is used for pemitted elements in lists
72 unsigned int name_flags;
73 unsigned long option_value;
76 /* Switch table: use for single command line switches like no_tls2 */
78 unsigned long option_value;
79 unsigned int name_flags;
82 /* Sense of name is inverted e.g. "TLSv1" will clear SSL_OP_NO_TLSv1 */
83 #define SSL_TFLAG_INV 0x1
84 /* Mask for type of flag referred to */
85 #define SSL_TFLAG_TYPE_MASK 0xf00
86 /* Flag is for options */
87 #define SSL_TFLAG_OPTION 0x000
88 /* Flag is for cert_flags */
89 #define SSL_TFLAG_CERT 0x100
90 /* Flag is for verify mode */
91 #define SSL_TFLAG_VFY 0x200
92 /* Option can only be used for clients */
93 #define SSL_TFLAG_CLIENT SSL_CONF_FLAG_CLIENT
94 /* Option can only be used for servers */
95 #define SSL_TFLAG_SERVER SSL_CONF_FLAG_SERVER
96 #define SSL_TFLAG_BOTH (SSL_TFLAG_CLIENT|SSL_TFLAG_SERVER)
98 #define SSL_FLAG_TBL(str, flag) \
99 {str, (int)(sizeof(str) - 1), SSL_TFLAG_BOTH, flag}
100 #define SSL_FLAG_TBL_SRV(str, flag) \
101 {str, (int)(sizeof(str) - 1), SSL_TFLAG_SERVER, flag}
102 #define SSL_FLAG_TBL_CLI(str, flag) \
103 {str, (int)(sizeof(str) - 1), SSL_TFLAG_CLIENT, flag}
104 #define SSL_FLAG_TBL_INV(str, flag) \
105 {str, (int)(sizeof(str) - 1), SSL_TFLAG_INV|SSL_TFLAG_BOTH, flag}
106 #define SSL_FLAG_TBL_SRV_INV(str, flag) \
107 {str, (int)(sizeof(str) - 1), SSL_TFLAG_INV|SSL_TFLAG_SERVER, flag}
108 #define SSL_FLAG_TBL_CERT(str, flag) \
109 {str, (int)(sizeof(str) - 1), SSL_TFLAG_CERT|SSL_TFLAG_BOTH, flag}
111 #define SSL_FLAG_VFY_CLI(str, flag) \
112 {str, (int)(sizeof(str) - 1), SSL_TFLAG_VFY | SSL_TFLAG_CLIENT, flag}
113 #define SSL_FLAG_VFY_SRV(str, flag) \
114 {str, (int)(sizeof(str) - 1), SSL_TFLAG_VFY | SSL_TFLAG_SERVER, flag}
117 * Opaque structure containing SSL configuration context.
120 struct ssl_conf_ctx_st {
122 * Various flags indicating (among other things) which options we will
126 /* Prefix and length of commands */
129 /* SSL_CTX or SSL structure to perform operations on */
132 /* Pointer to SSL or SSL_CTX options field or NULL if none */
134 /* Certificate filenames for each type */
135 char *cert_filename[SSL_PKEY_NUM];
136 /* Pointer to SSL or SSL_CTX cert_flags or NULL if none */
137 uint32_t *pcert_flags;
138 /* Pointer to SSL or SSL_CTX verify_mode or NULL if none */
139 uint32_t *pvfy_flags;
140 /* Pointer to SSL or SSL_CTX min_version field or NULL if none */
142 /* Pointer to SSL or SSL_CTX max_version field or NULL if none */
144 /* Current flag table being worked on */
145 const ssl_flag_tbl *tbl;
148 /* Client CA names */
149 STACK_OF(X509_NAME) *canames;
152 static void ssl_set_option(SSL_CONF_CTX *cctx, unsigned int name_flags,
153 unsigned long option_value, int onoff)
156 if (cctx->poptions == NULL)
158 if (name_flags & SSL_TFLAG_INV)
160 switch (name_flags & SSL_TFLAG_TYPE_MASK) {
163 pflags = cctx->pcert_flags;
167 pflags = cctx->pvfy_flags;
170 case SSL_TFLAG_OPTION:
171 pflags = cctx->poptions;
179 *pflags |= option_value;
181 *pflags &= ~option_value;
184 static int ssl_match_option(SSL_CONF_CTX *cctx, const ssl_flag_tbl *tbl,
185 const char *name, int namelen, int onoff)
187 /* If name not relevant for context skip */
188 if (!(cctx->flags & tbl->name_flags & SSL_TFLAG_BOTH))
191 if (strcmp(tbl->name, name))
193 } else if (tbl->namelen != namelen
194 || strncasecmp(tbl->name, name, namelen))
196 ssl_set_option(cctx, tbl->name_flags, tbl->option_value, onoff);
200 static int ssl_set_option_list(const char *elem, int len, void *usr)
202 SSL_CONF_CTX *cctx = usr;
204 const ssl_flag_tbl *tbl;
207 * len == -1 indicates not being called in list context, just for single
208 * command line switches, so don't allow +, -.
217 } else if (*elem == '-') {
223 for (i = 0, tbl = cctx->tbl; i < cctx->ntbl; i++, tbl++) {
224 if (ssl_match_option(cctx, tbl, elem, len, onoff))
230 /* Set supported signature algorithms */
231 static int cmd_SignatureAlgorithms(SSL_CONF_CTX *cctx, const char *value)
235 rv = SSL_set1_sigalgs_list(cctx->ssl, value);
236 /* NB: ctx == NULL performs syntax checking only */
238 rv = SSL_CTX_set1_sigalgs_list(cctx->ctx, value);
242 /* Set supported client signature algorithms */
243 static int cmd_ClientSignatureAlgorithms(SSL_CONF_CTX *cctx,
248 rv = SSL_set1_client_sigalgs_list(cctx->ssl, value);
249 /* NB: ctx == NULL performs syntax checking only */
251 rv = SSL_CTX_set1_client_sigalgs_list(cctx->ctx, value);
255 static int cmd_Curves(SSL_CONF_CTX *cctx, const char *value)
259 rv = SSL_set1_curves_list(cctx->ssl, value);
260 /* NB: ctx == NULL performs syntax checking only */
262 rv = SSL_CTX_set1_curves_list(cctx->ctx, value);
266 #ifndef OPENSSL_NO_EC
267 /* ECDH temporary parameters */
268 static int cmd_ECDHParameters(SSL_CONF_CTX *cctx, const char *value)
274 nid = EC_curve_nist2nid(value);
275 if (nid == NID_undef)
276 nid = OBJ_sn2nid(value);
279 ecdh = EC_KEY_new_by_curve_name(nid);
283 rv = SSL_CTX_set_tmp_ecdh(cctx->ctx, ecdh);
285 rv = SSL_set_tmp_ecdh(cctx->ssl, ecdh);
291 static int cmd_CipherString(SSL_CONF_CTX *cctx, const char *value)
295 rv = SSL_CTX_set_cipher_list(cctx->ctx, value);
297 rv = SSL_set_cipher_list(cctx->ssl, value);
301 static int cmd_Protocol(SSL_CONF_CTX *cctx, const char *value)
303 static const ssl_flag_tbl ssl_protocol_list[] = {
304 SSL_FLAG_TBL_INV("ALL", SSL_OP_NO_SSL_MASK),
305 SSL_FLAG_TBL_INV("SSLv2", SSL_OP_NO_SSLv2),
306 SSL_FLAG_TBL_INV("SSLv3", SSL_OP_NO_SSLv3),
307 SSL_FLAG_TBL_INV("TLSv1", SSL_OP_NO_TLSv1),
308 SSL_FLAG_TBL_INV("TLSv1.1", SSL_OP_NO_TLSv1_1),
309 SSL_FLAG_TBL_INV("TLSv1.2", SSL_OP_NO_TLSv1_2),
310 SSL_FLAG_TBL_INV("DTLSv1", SSL_OP_NO_DTLSv1),
311 SSL_FLAG_TBL_INV("DTLSv1.2", SSL_OP_NO_DTLSv1_2)
313 cctx->tbl = ssl_protocol_list;
314 cctx->ntbl = OSSL_NELEM(ssl_protocol_list);
315 return CONF_parse_list(value, ',', 1, ssl_set_option_list, cctx);
319 * protocol_from_string - converts a protocol version string to a number
321 * Returns -1 on failure or the version on success
323 static int protocol_from_string(const char *value)
325 struct protocol_versions {
329 static const struct protocol_versions versions[] = {
331 {"SSLv3", SSL3_VERSION},
332 {"TLSv1", TLS1_VERSION},
333 {"TLSv1.1", TLS1_1_VERSION},
334 {"TLSv1.2", TLS1_2_VERSION},
335 {"DTLSv1", DTLS1_VERSION},
336 {"DTLSv1.2", DTLS1_2_VERSION}};
338 size_t n = OSSL_NELEM(versions);
340 for (i = 0; i < n; i++)
341 if (strcmp(versions[i].name, value) == 0)
342 return versions[i].version;
346 static int min_max_proto(SSL_CONF_CTX *cctx, const char *value, int *bound)
351 if (cctx->ctx != NULL)
352 method_version = cctx->ctx->method->version;
353 else if (cctx->ssl != NULL)
354 method_version = cctx->ssl->ctx->method->version;
357 if ((new_version = protocol_from_string(value)) < 0)
359 return ssl_set_version_bound(method_version, new_version, bound);
363 * cmd_MinProtocol - Set min protocol version
364 * @cctx: config structure to save settings in
365 * @value: The min protocol version in string form
367 * Returns 1 on success and 0 on failure.
369 static int cmd_MinProtocol(SSL_CONF_CTX *cctx, const char *value)
371 return min_max_proto(cctx, value, cctx->min_version);
375 * cmd_MaxProtocol - Set max protocol version
376 * @cctx: config structure to save settings in
377 * @value: The max protocol version in string form
379 * Returns 1 on success and 0 on failure.
381 static int cmd_MaxProtocol(SSL_CONF_CTX *cctx, const char *value)
383 return min_max_proto(cctx, value, cctx->max_version);
386 static int cmd_Options(SSL_CONF_CTX *cctx, const char *value)
388 static const ssl_flag_tbl ssl_option_list[] = {
389 SSL_FLAG_TBL_INV("SessionTicket", SSL_OP_NO_TICKET),
390 SSL_FLAG_TBL_INV("EmptyFragments",
391 SSL_OP_DONT_INSERT_EMPTY_FRAGMENTS),
392 SSL_FLAG_TBL("Bugs", SSL_OP_ALL),
393 SSL_FLAG_TBL_INV("Compression", SSL_OP_NO_COMPRESSION),
394 SSL_FLAG_TBL_SRV("ServerPreference", SSL_OP_CIPHER_SERVER_PREFERENCE),
395 SSL_FLAG_TBL_SRV("NoResumptionOnRenegotiation",
396 SSL_OP_NO_SESSION_RESUMPTION_ON_RENEGOTIATION),
397 SSL_FLAG_TBL_SRV("DHSingle", SSL_OP_SINGLE_DH_USE),
398 SSL_FLAG_TBL_SRV("ECDHSingle", SSL_OP_SINGLE_ECDH_USE),
399 SSL_FLAG_TBL("UnsafeLegacyRenegotiation",
400 SSL_OP_ALLOW_UNSAFE_LEGACY_RENEGOTIATION),
404 cctx->tbl = ssl_option_list;
405 cctx->ntbl = OSSL_NELEM(ssl_option_list);
406 return CONF_parse_list(value, ',', 1, ssl_set_option_list, cctx);
409 static int cmd_VerifyMode(SSL_CONF_CTX *cctx, const char *value)
411 static const ssl_flag_tbl ssl_vfy_list[] = {
412 SSL_FLAG_VFY_CLI("Peer", SSL_VERIFY_PEER),
413 SSL_FLAG_VFY_SRV("Request", SSL_VERIFY_PEER),
414 SSL_FLAG_VFY_SRV("Require",
415 SSL_VERIFY_PEER | SSL_VERIFY_FAIL_IF_NO_PEER_CERT),
416 SSL_FLAG_VFY_SRV("Once", SSL_VERIFY_PEER | SSL_VERIFY_CLIENT_ONCE)
420 cctx->tbl = ssl_vfy_list;
421 cctx->ntbl = OSSL_NELEM(ssl_vfy_list);
422 return CONF_parse_list(value, ',', 1, ssl_set_option_list, cctx);
425 static int cmd_Certificate(SSL_CONF_CTX *cctx, const char *value)
430 rv = SSL_CTX_use_certificate_chain_file(cctx->ctx, value);
434 rv = SSL_use_certificate_chain_file(cctx->ssl, value);
437 if (rv > 0 && c && cctx->flags & SSL_CONF_FLAG_REQUIRE_PRIVATE) {
438 char **pfilename = &cctx->cert_filename[c->key - c->pkeys];
439 OPENSSL_free(*pfilename);
440 *pfilename = OPENSSL_strdup(value);
448 static int cmd_PrivateKey(SSL_CONF_CTX *cctx, const char *value)
451 if (!(cctx->flags & SSL_CONF_FLAG_CERTIFICATE))
454 rv = SSL_CTX_use_PrivateKey_file(cctx->ctx, value, SSL_FILETYPE_PEM);
456 rv = SSL_use_PrivateKey_file(cctx->ssl, value, SSL_FILETYPE_PEM);
460 static int cmd_ServerInfoFile(SSL_CONF_CTX *cctx, const char *value)
464 rv = SSL_CTX_use_serverinfo_file(cctx->ctx, value);
468 static int do_store(SSL_CONF_CTX *cctx,
469 const char *CAfile, const char *CApath, int verify_store)
474 cert = cctx->ctx->cert;
476 cert = cctx->ssl->cert;
479 st = verify_store ? &cert->verify_store : &cert->chain_store;
481 *st = X509_STORE_new();
485 return X509_STORE_load_locations(*st, CAfile, CApath) > 0;
488 static int cmd_ChainCAPath(SSL_CONF_CTX *cctx, const char *value)
490 return do_store(cctx, NULL, value, 0);
493 static int cmd_ChainCAFile(SSL_CONF_CTX *cctx, const char *value)
495 return do_store(cctx, value, NULL, 0);
498 static int cmd_VerifyCAPath(SSL_CONF_CTX *cctx, const char *value)
500 return do_store(cctx, NULL, value, 1);
503 static int cmd_VerifyCAFile(SSL_CONF_CTX *cctx, const char *value)
505 return do_store(cctx, value, NULL, 1);
508 static int cmd_ClientCAFile(SSL_CONF_CTX *cctx, const char *value)
510 if (cctx->canames == NULL)
511 cctx->canames = sk_X509_NAME_new_null();
512 if (cctx->canames == NULL)
514 return SSL_add_file_cert_subjects_to_stack(cctx->canames, value);
517 static int cmd_ClientCAPath(SSL_CONF_CTX *cctx, const char *value)
519 if (cctx->canames == NULL)
520 cctx->canames = sk_X509_NAME_new_null();
521 if (cctx->canames == NULL)
523 return SSL_add_dir_cert_subjects_to_stack(cctx->canames, value);
526 #ifndef OPENSSL_NO_DH
527 static int cmd_DHParameters(SSL_CONF_CTX *cctx, const char *value)
532 if (cctx->ctx || cctx->ssl) {
533 in = BIO_new(BIO_s_file());
536 if (BIO_read_filename(in, value) <= 0)
538 dh = PEM_read_bio_DHparams(in, NULL, NULL, NULL);
544 rv = SSL_CTX_set_tmp_dh(cctx->ctx, dh);
546 rv = SSL_set_tmp_dh(cctx->ssl, dh);
554 int (*cmd) (SSL_CONF_CTX *cctx, const char *value);
555 const char *str_file;
556 const char *str_cmdline;
557 unsigned short flags;
558 unsigned short value_type;
561 /* Table of supported parameters */
563 #define SSL_CONF_CMD(name, cmdopt, flags, type) \
564 {cmd_##name, #name, cmdopt, flags, type}
566 #define SSL_CONF_CMD_STRING(name, cmdopt, flags) \
567 SSL_CONF_CMD(name, cmdopt, flags, SSL_CONF_TYPE_STRING)
569 #define SSL_CONF_CMD_SWITCH(name, flags) \
570 {0, NULL, name, flags, SSL_CONF_TYPE_NONE}
572 /* See apps/apps.h if you change this table. */
573 static const ssl_conf_cmd_tbl ssl_conf_cmds[] = {
574 SSL_CONF_CMD_SWITCH("no_ssl3", 0),
575 SSL_CONF_CMD_SWITCH("no_tls1", 0),
576 SSL_CONF_CMD_SWITCH("no_tls1_1", 0),
577 SSL_CONF_CMD_SWITCH("no_tls1_2", 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_resumption_on_reneg", SSL_CONF_FLAG_SERVER),
587 SSL_CONF_CMD_SWITCH("no_legacy_server_connect", SSL_CONF_FLAG_SERVER),
588 SSL_CONF_CMD_SWITCH("strict", 0),
589 SSL_CONF_CMD_STRING(SignatureAlgorithms, "sigalgs", 0),
590 SSL_CONF_CMD_STRING(ClientSignatureAlgorithms, "client_sigalgs", 0),
591 SSL_CONF_CMD_STRING(Curves, "curves", 0),
592 #ifndef OPENSSL_NO_EC
593 SSL_CONF_CMD_STRING(ECDHParameters, "named_curve", SSL_CONF_FLAG_SERVER),
595 SSL_CONF_CMD_STRING(CipherString, "cipher", 0),
596 SSL_CONF_CMD_STRING(Protocol, NULL, 0),
597 SSL_CONF_CMD_STRING(MinProtocol, "min_protocol", 0),
598 SSL_CONF_CMD_STRING(MaxProtocol, "max_protocol", 0),
599 SSL_CONF_CMD_STRING(Options, NULL, 0),
600 SSL_CONF_CMD_STRING(VerifyMode, NULL, 0),
601 SSL_CONF_CMD(Certificate, "cert", SSL_CONF_FLAG_CERTIFICATE,
603 SSL_CONF_CMD(PrivateKey, "key", SSL_CONF_FLAG_CERTIFICATE,
605 SSL_CONF_CMD(ServerInfoFile, NULL,
606 SSL_CONF_FLAG_SERVER | SSL_CONF_FLAG_CERTIFICATE,
608 SSL_CONF_CMD(ChainCAPath, "chainCApath", SSL_CONF_FLAG_CERTIFICATE,
610 SSL_CONF_CMD(ChainCAFile, "chainCAfile", SSL_CONF_FLAG_CERTIFICATE,
612 SSL_CONF_CMD(VerifyCAPath, "verifyCApath", SSL_CONF_FLAG_CERTIFICATE,
614 SSL_CONF_CMD(VerifyCAFile, "verifyCAfile", SSL_CONF_FLAG_CERTIFICATE,
616 SSL_CONF_CMD(ClientCAFile, NULL,
617 SSL_CONF_FLAG_SERVER | SSL_CONF_FLAG_CERTIFICATE,
619 SSL_CONF_CMD(ClientCAPath, NULL,
620 SSL_CONF_FLAG_SERVER | SSL_CONF_FLAG_CERTIFICATE,
622 #ifndef OPENSSL_NO_DH
623 SSL_CONF_CMD(DHParameters, "dhparam",
624 SSL_CONF_FLAG_SERVER | SSL_CONF_FLAG_CERTIFICATE,
629 /* Supported switches: must match order of switches in ssl_conf_cmds */
630 static const ssl_switch_tbl ssl_cmd_switches[] = {
631 {SSL_OP_NO_SSLv3, 0}, /* no_ssl3 */
632 {SSL_OP_NO_TLSv1, 0}, /* no_tls1 */
633 {SSL_OP_NO_TLSv1_1, 0}, /* no_tls1_1 */
634 {SSL_OP_NO_TLSv1_2, 0}, /* no_tls1_2 */
635 {SSL_OP_ALL, 0}, /* bugs */
636 {SSL_OP_NO_COMPRESSION, 0}, /* no_comp */
637 {SSL_OP_NO_COMPRESSION, SSL_TFLAG_INV}, /* comp */
638 {SSL_OP_SINGLE_ECDH_USE, 0}, /* ecdh_single */
639 {SSL_OP_NO_TICKET, 0}, /* no_ticket */
640 {SSL_OP_CIPHER_SERVER_PREFERENCE, 0}, /* serverpref */
641 /* legacy_renegotiation */
642 {SSL_OP_ALLOW_UNSAFE_LEGACY_RENEGOTIATION, 0},
643 /* legacy_server_connect */
644 {SSL_OP_LEGACY_SERVER_CONNECT, 0},
645 /* no_resumption_on_reneg */
646 {SSL_OP_NO_SESSION_RESUMPTION_ON_RENEGOTIATION, 0},
647 /* no_legacy_server_connect */
648 {SSL_OP_LEGACY_SERVER_CONNECT, SSL_TFLAG_INV},
649 {SSL_CERT_FLAG_TLS_STRICT, SSL_TFLAG_CERT}, /* strict */
652 static int ssl_conf_cmd_skip_prefix(SSL_CONF_CTX *cctx, const char **pcmd)
656 /* If a prefix is set, check and skip */
658 if (strlen(*pcmd) <= cctx->prefixlen)
660 if (cctx->flags & SSL_CONF_FLAG_CMDLINE &&
661 strncmp(*pcmd, cctx->prefix, cctx->prefixlen))
663 if (cctx->flags & SSL_CONF_FLAG_FILE &&
664 strncasecmp(*pcmd, cctx->prefix, cctx->prefixlen))
666 *pcmd += cctx->prefixlen;
667 } else if (cctx->flags & SSL_CONF_FLAG_CMDLINE) {
668 if (**pcmd != '-' || !(*pcmd)[1])
675 /* Determine if a command is allowed according to cctx flags */
676 static int ssl_conf_cmd_allowed(SSL_CONF_CTX *cctx,
677 const ssl_conf_cmd_tbl * t)
679 unsigned int tfl = t->flags;
680 unsigned int cfl = cctx->flags;
681 if ((tfl & SSL_CONF_FLAG_SERVER) && !(cfl & SSL_CONF_FLAG_SERVER))
683 if ((tfl & SSL_CONF_FLAG_CLIENT) && !(cfl & SSL_CONF_FLAG_CLIENT))
685 if ((tfl & SSL_CONF_FLAG_CERTIFICATE)
686 && !(cfl & SSL_CONF_FLAG_CERTIFICATE))
691 static const ssl_conf_cmd_tbl *ssl_conf_cmd_lookup(SSL_CONF_CTX *cctx,
694 const ssl_conf_cmd_tbl *t;
699 /* Look for matching parameter name in table */
700 for (i = 0, t = ssl_conf_cmds; i < OSSL_NELEM(ssl_conf_cmds); i++, t++) {
701 if (ssl_conf_cmd_allowed(cctx, t)) {
702 if (cctx->flags & SSL_CONF_FLAG_CMDLINE) {
703 if (t->str_cmdline && strcmp(t->str_cmdline, cmd) == 0)
706 if (cctx->flags & SSL_CONF_FLAG_FILE) {
707 if (t->str_file && strcasecmp(t->str_file, cmd) == 0)
715 static int ctrl_switch_option(SSL_CONF_CTX *cctx,
716 const ssl_conf_cmd_tbl * cmd)
718 /* Find index of command in table */
719 size_t idx = cmd - ssl_conf_cmds;
720 const ssl_switch_tbl *scmd;
721 /* Sanity check index */
722 if (idx >= OSSL_NELEM(ssl_cmd_switches))
724 /* Obtain switches entry with same index */
725 scmd = ssl_cmd_switches + idx;
726 ssl_set_option(cctx, scmd->name_flags, scmd->option_value, 1);
730 int SSL_CONF_cmd(SSL_CONF_CTX *cctx, const char *cmd, const char *value)
732 const ssl_conf_cmd_tbl *runcmd;
734 SSLerr(SSL_F_SSL_CONF_CMD, SSL_R_INVALID_NULL_CMD_NAME);
738 if (!ssl_conf_cmd_skip_prefix(cctx, &cmd))
741 runcmd = ssl_conf_cmd_lookup(cctx, cmd);
745 if (runcmd->value_type == SSL_CONF_TYPE_NONE) {
746 return ctrl_switch_option(cctx, runcmd);
750 rv = runcmd->cmd(cctx, value);
755 if (cctx->flags & SSL_CONF_FLAG_SHOW_ERRORS) {
756 SSLerr(SSL_F_SSL_CONF_CMD, SSL_R_BAD_VALUE);
757 ERR_add_error_data(4, "cmd=", cmd, ", value=", value);
762 if (cctx->flags & SSL_CONF_FLAG_SHOW_ERRORS) {
763 SSLerr(SSL_F_SSL_CONF_CMD, SSL_R_UNKNOWN_CMD_NAME);
764 ERR_add_error_data(2, "cmd=", cmd);
770 int SSL_CONF_cmd_argv(SSL_CONF_CTX *cctx, int *pargc, char ***pargv)
773 const char *arg = NULL, *argn;
774 if (pargc && *pargc == 0)
776 if (!pargc || *pargc > 0)
780 if (!pargc || *pargc > 1)
784 cctx->flags &= ~SSL_CONF_FLAG_FILE;
785 cctx->flags |= SSL_CONF_FLAG_CMDLINE;
786 rv = SSL_CONF_cmd(cctx, arg, argn);
788 /* Success: update pargc, pargv */
794 /* Unknown switch: indicate no arguments processed */
797 /* Some error occurred processing command, return fatal error */
803 int SSL_CONF_cmd_value_type(SSL_CONF_CTX *cctx, const char *cmd)
805 if (ssl_conf_cmd_skip_prefix(cctx, &cmd)) {
806 const ssl_conf_cmd_tbl *runcmd;
807 runcmd = ssl_conf_cmd_lookup(cctx, cmd);
809 return runcmd->value_type;
811 return SSL_CONF_TYPE_UNKNOWN;
814 SSL_CONF_CTX *SSL_CONF_CTX_new(void)
816 SSL_CONF_CTX *ret = OPENSSL_zalloc(sizeof(*ret));
821 int SSL_CONF_CTX_finish(SSL_CONF_CTX *cctx)
823 /* See if any certificates are missing private keys */
830 if (c && cctx->flags & SSL_CONF_FLAG_REQUIRE_PRIVATE) {
831 for (i = 0; i < SSL_PKEY_NUM; i++) {
832 const char *p = cctx->cert_filename[i];
834 * If missing private key try to load one from certificate file
836 if (p && !c->pkeys[i].privatekey) {
837 if (!cmd_PrivateKey(cctx, p))
844 SSL_set_client_CA_list(cctx->ssl, cctx->canames);
846 SSL_CTX_set_client_CA_list(cctx->ctx, cctx->canames);
848 sk_X509_NAME_pop_free(cctx->canames, X509_NAME_free);
849 cctx->canames = NULL;
854 void SSL_CONF_CTX_free(SSL_CONF_CTX *cctx)
858 for (i = 0; i < SSL_PKEY_NUM; i++)
859 OPENSSL_free(cctx->cert_filename[i]);
860 OPENSSL_free(cctx->prefix);
861 sk_X509_NAME_pop_free(cctx->canames, X509_NAME_free);
866 unsigned int SSL_CONF_CTX_set_flags(SSL_CONF_CTX *cctx, unsigned int flags)
868 cctx->flags |= flags;
872 unsigned int SSL_CONF_CTX_clear_flags(SSL_CONF_CTX *cctx, unsigned int flags)
874 cctx->flags &= ~flags;
878 int SSL_CONF_CTX_set1_prefix(SSL_CONF_CTX *cctx, const char *pre)
882 tmp = OPENSSL_strdup(pre);
886 OPENSSL_free(cctx->prefix);
889 cctx->prefixlen = strlen(tmp);
895 void SSL_CONF_CTX_set_ssl(SSL_CONF_CTX *cctx, SSL *ssl)
900 cctx->poptions = &ssl->options;
901 cctx->min_version = &ssl->min_proto_version;
902 cctx->max_version = &ssl->max_proto_version;
903 cctx->pcert_flags = &ssl->cert->cert_flags;
904 cctx->pvfy_flags = &ssl->verify_mode;
906 cctx->poptions = NULL;
907 cctx->min_version = NULL;
908 cctx->max_version = NULL;
909 cctx->pcert_flags = NULL;
910 cctx->pvfy_flags = NULL;
914 void SSL_CONF_CTX_set_ssl_ctx(SSL_CONF_CTX *cctx, SSL_CTX *ctx)
919 cctx->poptions = &ctx->options;
920 cctx->min_version = &ctx->min_proto_version;
921 cctx->max_version = &ctx->max_proto_version;
922 cctx->pcert_flags = &ctx->cert->cert_flags;
923 cctx->pvfy_flags = &ctx->verify_mode;
925 cctx->poptions = NULL;
926 cctx->min_version = NULL;
927 cctx->max_version = NULL;
928 cctx->pcert_flags = NULL;
929 cctx->pvfy_flags = NULL;