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
;