2 * Copyright 2012-2017 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>
15 #include "internal/nelem.h"
18 * structure holding name tables. This is used for permitted elements in lists
25 unsigned int name_flags;
26 unsigned long option_value;
29 /* Switch table: use for single command line switches like no_tls2 */
31 unsigned long option_value;
32 unsigned int name_flags;
35 /* Sense of name is inverted e.g. "TLSv1" will clear SSL_OP_NO_TLSv1 */
36 #define SSL_TFLAG_INV 0x1
37 /* Mask for type of flag referred to */
38 #define SSL_TFLAG_TYPE_MASK 0xf00
39 /* Flag is for options */
40 #define SSL_TFLAG_OPTION 0x000
41 /* Flag is for cert_flags */
42 #define SSL_TFLAG_CERT 0x100
43 /* Flag is for verify mode */
44 #define SSL_TFLAG_VFY 0x200
45 /* Option can only be used for clients */
46 #define SSL_TFLAG_CLIENT SSL_CONF_FLAG_CLIENT
47 /* Option can only be used for servers */
48 #define SSL_TFLAG_SERVER SSL_CONF_FLAG_SERVER
49 #define SSL_TFLAG_BOTH (SSL_TFLAG_CLIENT|SSL_TFLAG_SERVER)
51 #define SSL_FLAG_TBL(str, flag) \
52 {str, (int)(sizeof(str) - 1), SSL_TFLAG_BOTH, flag}
53 #define SSL_FLAG_TBL_SRV(str, flag) \
54 {str, (int)(sizeof(str) - 1), SSL_TFLAG_SERVER, flag}
55 #define SSL_FLAG_TBL_CLI(str, flag) \
56 {str, (int)(sizeof(str) - 1), SSL_TFLAG_CLIENT, flag}
57 #define SSL_FLAG_TBL_INV(str, flag) \
58 {str, (int)(sizeof(str) - 1), SSL_TFLAG_INV|SSL_TFLAG_BOTH, flag}
59 #define SSL_FLAG_TBL_SRV_INV(str, flag) \
60 {str, (int)(sizeof(str) - 1), SSL_TFLAG_INV|SSL_TFLAG_SERVER, flag}
61 #define SSL_FLAG_TBL_CERT(str, flag) \
62 {str, (int)(sizeof(str) - 1), SSL_TFLAG_CERT|SSL_TFLAG_BOTH, flag}
64 #define SSL_FLAG_VFY_CLI(str, flag) \
65 {str, (int)(sizeof(str) - 1), SSL_TFLAG_VFY | SSL_TFLAG_CLIENT, flag}
66 #define SSL_FLAG_VFY_SRV(str, flag) \
67 {str, (int)(sizeof(str) - 1), SSL_TFLAG_VFY | SSL_TFLAG_SERVER, flag}
70 * Opaque structure containing SSL configuration context.
73 struct ssl_conf_ctx_st {
75 * Various flags indicating (among other things) which options we will
79 /* Prefix and length of commands */
82 /* SSL_CTX or SSL structure to perform operations on */
85 /* Pointer to SSL or SSL_CTX options field or NULL if none */
87 /* Certificate filenames for each type */
88 char *cert_filename[SSL_PKEY_NUM];
89 /* Pointer to SSL or SSL_CTX cert_flags or NULL if none */
90 uint32_t *pcert_flags;
91 /* Pointer to SSL or SSL_CTX verify_mode or NULL if none */
93 /* Pointer to SSL or SSL_CTX min_version field or NULL if none */
95 /* Pointer to SSL or SSL_CTX max_version field or NULL if none */
97 /* Current flag table being worked on */
98 const ssl_flag_tbl *tbl;
101 /* Client CA names */
102 STACK_OF(X509_NAME) *canames;
105 static void ssl_set_option(SSL_CONF_CTX *cctx, unsigned int name_flags,
106 unsigned long option_value, int onoff)
109 if (cctx->poptions == NULL)
111 if (name_flags & SSL_TFLAG_INV)
113 switch (name_flags & SSL_TFLAG_TYPE_MASK) {
116 pflags = cctx->pcert_flags;
120 pflags = cctx->pvfy_flags;
123 case SSL_TFLAG_OPTION:
124 pflags = cctx->poptions;
132 *pflags |= option_value;
134 *pflags &= ~option_value;
137 static int ssl_match_option(SSL_CONF_CTX *cctx, const ssl_flag_tbl *tbl,
138 const char *name, int namelen, int onoff)
140 /* If name not relevant for context skip */
141 if (!(cctx->flags & tbl->name_flags & SSL_TFLAG_BOTH))
144 if (strcmp(tbl->name, name))
146 } else if (tbl->namelen != namelen || strncasecmp(tbl->name, name, namelen))
148 ssl_set_option(cctx, tbl->name_flags, tbl->option_value, onoff);
152 static int ssl_set_option_list(const char *elem, int len, void *usr)
154 SSL_CONF_CTX *cctx = usr;
156 const ssl_flag_tbl *tbl;
159 * len == -1 indicates not being called in list context, just for single
160 * command line switches, so don't allow +, -.
169 } else if (*elem == '-') {
175 for (i = 0, tbl = cctx->tbl; i < cctx->ntbl; i++, tbl++) {
176 if (ssl_match_option(cctx, tbl, elem, len, onoff))
182 /* Set supported signature algorithms */
183 static int cmd_SignatureAlgorithms(SSL_CONF_CTX *cctx, const char *value)
187 rv = SSL_set1_sigalgs_list(cctx->ssl, value);
188 /* NB: ctx == NULL performs syntax checking only */
190 rv = SSL_CTX_set1_sigalgs_list(cctx->ctx, value);
194 /* Set supported client signature algorithms */
195 static int cmd_ClientSignatureAlgorithms(SSL_CONF_CTX *cctx, const char *value)
199 rv = SSL_set1_client_sigalgs_list(cctx->ssl, value);
200 /* NB: ctx == NULL performs syntax checking only */
202 rv = SSL_CTX_set1_client_sigalgs_list(cctx->ctx, value);
206 static int cmd_Groups(SSL_CONF_CTX *cctx, const char *value)
210 rv = SSL_set1_groups_list(cctx->ssl, value);
211 /* NB: ctx == NULL performs syntax checking only */
213 rv = SSL_CTX_set1_groups_list(cctx->ctx, value);
217 /* This is the old name for cmd_Groups - retained for backwards compatibility */
218 static int cmd_Curves(SSL_CONF_CTX *cctx, const char *value)
220 return cmd_Groups(cctx, value);
223 #ifndef OPENSSL_NO_EC
224 /* ECDH temporary parameters */
225 static int cmd_ECDHParameters(SSL_CONF_CTX *cctx, const char *value)
231 /* Ignore values supported by 1.0.2 for the automatic selection */
232 if ((cctx->flags & SSL_CONF_FLAG_FILE) &&
233 strcasecmp(value, "+automatic") == 0)
235 if ((cctx->flags & SSL_CONF_FLAG_CMDLINE) &&
236 strcmp(value, "auto") == 0)
239 nid = EC_curve_nist2nid(value);
240 if (nid == NID_undef)
241 nid = OBJ_sn2nid(value);
244 ecdh = EC_KEY_new_by_curve_name(nid);
248 rv = SSL_CTX_set_tmp_ecdh(cctx->ctx, ecdh);
250 rv = SSL_set_tmp_ecdh(cctx->ssl, ecdh);
256 static int cmd_CipherString(SSL_CONF_CTX *cctx, const char *value)
260 rv = SSL_CTX_set_cipher_list(cctx->ctx, value);
262 rv = SSL_set_cipher_list(cctx->ssl, value);
266 static int cmd_Protocol(SSL_CONF_CTX *cctx, const char *value)
268 static const ssl_flag_tbl ssl_protocol_list[] = {
269 SSL_FLAG_TBL_INV("ALL", SSL_OP_NO_SSL_MASK),
270 SSL_FLAG_TBL_INV("SSLv2", SSL_OP_NO_SSLv2),
271 SSL_FLAG_TBL_INV("SSLv3", SSL_OP_NO_SSLv3),
272 SSL_FLAG_TBL_INV("TLSv1", SSL_OP_NO_TLSv1),
273 SSL_FLAG_TBL_INV("TLSv1.1", SSL_OP_NO_TLSv1_1),
274 SSL_FLAG_TBL_INV("TLSv1.2", SSL_OP_NO_TLSv1_2),
275 SSL_FLAG_TBL_INV("TLSv1.3", SSL_OP_NO_TLSv1_3),
276 SSL_FLAG_TBL_INV("DTLSv1", SSL_OP_NO_DTLSv1),
277 SSL_FLAG_TBL_INV("DTLSv1.2", SSL_OP_NO_DTLSv1_2)
279 cctx->tbl = ssl_protocol_list;
280 cctx->ntbl = OSSL_NELEM(ssl_protocol_list);
281 return CONF_parse_list(value, ',', 1, ssl_set_option_list, cctx);
285 * protocol_from_string - converts a protocol version string to a number
287 * Returns -1 on failure or the version on success
289 static int protocol_from_string(const char *value)
291 struct protocol_versions {
295 static const struct protocol_versions versions[] = {
297 {"SSLv3", SSL3_VERSION},
298 {"TLSv1", TLS1_VERSION},
299 {"TLSv1.1", TLS1_1_VERSION},
300 {"TLSv1.2", TLS1_2_VERSION},
301 {"TLSv1.3", TLS1_3_VERSION},
302 {"DTLSv1", DTLS1_VERSION},
303 {"DTLSv1.2", DTLS1_2_VERSION}
306 size_t n = OSSL_NELEM(versions);
308 for (i = 0; i < n; i++)
309 if (strcmp(versions[i].name, value) == 0)
310 return versions[i].version;
314 static int min_max_proto(SSL_CONF_CTX *cctx, const char *value, int *bound)
319 if (cctx->ctx != NULL)
320 method_version = cctx->ctx->method->version;
321 else if (cctx->ssl != NULL)
322 method_version = cctx->ssl->ctx->method->version;
325 if ((new_version = protocol_from_string(value)) < 0)
327 return ssl_set_version_bound(method_version, new_version, bound);
331 * cmd_MinProtocol - Set min protocol version
332 * @cctx: config structure to save settings in
333 * @value: The min protocol version in string form
335 * Returns 1 on success and 0 on failure.
337 static int cmd_MinProtocol(SSL_CONF_CTX *cctx, const char *value)
339 return min_max_proto(cctx, value, cctx->min_version);
343 * cmd_MaxProtocol - Set max protocol version
344 * @cctx: config structure to save settings in
345 * @value: The max protocol version in string form
347 * Returns 1 on success and 0 on failure.
349 static int cmd_MaxProtocol(SSL_CONF_CTX *cctx, const char *value)
351 return min_max_proto(cctx, value, cctx->max_version);
354 static int cmd_Options(SSL_CONF_CTX *cctx, const char *value)
356 static const ssl_flag_tbl ssl_option_list[] = {
357 SSL_FLAG_TBL_INV("SessionTicket", SSL_OP_NO_TICKET),
358 SSL_FLAG_TBL_INV("EmptyFragments",
359 SSL_OP_DONT_INSERT_EMPTY_FRAGMENTS),
360 SSL_FLAG_TBL("Bugs", SSL_OP_ALL),
361 SSL_FLAG_TBL_INV("Compression", SSL_OP_NO_COMPRESSION),
362 SSL_FLAG_TBL_SRV("ServerPreference", SSL_OP_CIPHER_SERVER_PREFERENCE),
363 SSL_FLAG_TBL_SRV("NoResumptionOnRenegotiation",
364 SSL_OP_NO_SESSION_RESUMPTION_ON_RENEGOTIATION),
365 SSL_FLAG_TBL_SRV("DHSingle", SSL_OP_SINGLE_DH_USE),
366 SSL_FLAG_TBL_SRV("ECDHSingle", SSL_OP_SINGLE_ECDH_USE),
367 SSL_FLAG_TBL("UnsafeLegacyRenegotiation",
368 SSL_OP_ALLOW_UNSAFE_LEGACY_RENEGOTIATION),
369 SSL_FLAG_TBL_INV("EncryptThenMac", SSL_OP_NO_ENCRYPT_THEN_MAC),
370 SSL_FLAG_TBL("NoRenegotiation", SSL_OP_NO_RENEGOTIATION),
371 SSL_FLAG_TBL("AllowNoDHEKEX", SSL_OP_ALLOW_NO_DHE_KEX)
375 cctx->tbl = ssl_option_list;
376 cctx->ntbl = OSSL_NELEM(ssl_option_list);
377 return CONF_parse_list(value, ',', 1, ssl_set_option_list, cctx);
380 static int cmd_VerifyMode(SSL_CONF_CTX *cctx, const char *value)
382 static const ssl_flag_tbl ssl_vfy_list[] = {
383 SSL_FLAG_VFY_CLI("Peer", SSL_VERIFY_PEER),
384 SSL_FLAG_VFY_SRV("Request", SSL_VERIFY_PEER),
385 SSL_FLAG_VFY_SRV("Require",
386 SSL_VERIFY_PEER | SSL_VERIFY_FAIL_IF_NO_PEER_CERT),
387 SSL_FLAG_VFY_SRV("Once", SSL_VERIFY_PEER | SSL_VERIFY_CLIENT_ONCE)
391 cctx->tbl = ssl_vfy_list;
392 cctx->ntbl = OSSL_NELEM(ssl_vfy_list);
393 return CONF_parse_list(value, ',', 1, ssl_set_option_list, cctx);
396 static int cmd_Certificate(SSL_CONF_CTX *cctx, const char *value)
401 rv = SSL_CTX_use_certificate_chain_file(cctx->ctx, value);
405 rv = SSL_use_certificate_chain_file(cctx->ssl, value);
408 if (rv > 0 && c && cctx->flags & SSL_CONF_FLAG_REQUIRE_PRIVATE) {
409 char **pfilename = &cctx->cert_filename[c->key - c->pkeys];
410 OPENSSL_free(*pfilename);
411 *pfilename = OPENSSL_strdup(value);
419 static int cmd_PrivateKey(SSL_CONF_CTX *cctx, const char *value)
422 if (!(cctx->flags & SSL_CONF_FLAG_CERTIFICATE))
425 rv = SSL_CTX_use_PrivateKey_file(cctx->ctx, value, SSL_FILETYPE_PEM);
427 rv = SSL_use_PrivateKey_file(cctx->ssl, value, SSL_FILETYPE_PEM);
431 static int cmd_ServerInfoFile(SSL_CONF_CTX *cctx, const char *value)
435 rv = SSL_CTX_use_serverinfo_file(cctx->ctx, value);
439 static int do_store(SSL_CONF_CTX *cctx,
440 const char *CAfile, const char *CApath, int verify_store)
445 cert = cctx->ctx->cert;
447 cert = cctx->ssl->cert;
450 st = verify_store ? &cert->verify_store : &cert->chain_store;
452 *st = X509_STORE_new();
456 return X509_STORE_load_locations(*st, CAfile, CApath) > 0;
459 static int cmd_ChainCAPath(SSL_CONF_CTX *cctx, const char *value)
461 return do_store(cctx, NULL, value, 0);
464 static int cmd_ChainCAFile(SSL_CONF_CTX *cctx, const char *value)
466 return do_store(cctx, value, NULL, 0);
469 static int cmd_VerifyCAPath(SSL_CONF_CTX *cctx, const char *value)
471 return do_store(cctx, NULL, value, 1);
474 static int cmd_VerifyCAFile(SSL_CONF_CTX *cctx, const char *value)
476 return do_store(cctx, value, NULL, 1);
479 static int cmd_RequestCAFile(SSL_CONF_CTX *cctx, const char *value)
481 if (cctx->canames == NULL)
482 cctx->canames = sk_X509_NAME_new_null();
483 if (cctx->canames == NULL)
485 return SSL_add_file_cert_subjects_to_stack(cctx->canames, value);
488 static int cmd_ClientCAFile(SSL_CONF_CTX *cctx, const char *value)
490 return cmd_RequestCAFile(cctx, value);
493 static int cmd_RequestCAPath(SSL_CONF_CTX *cctx, const char *value)
495 if (cctx->canames == NULL)
496 cctx->canames = sk_X509_NAME_new_null();
497 if (cctx->canames == NULL)
499 return SSL_add_dir_cert_subjects_to_stack(cctx->canames, value);
502 static int cmd_ClientCAPath(SSL_CONF_CTX *cctx, const char *value)
504 return cmd_RequestCAPath(cctx, value);
507 #ifndef OPENSSL_NO_DH
508 static int cmd_DHParameters(SSL_CONF_CTX *cctx, const char *value)
513 if (cctx->ctx || cctx->ssl) {
514 in = BIO_new(BIO_s_file());
517 if (BIO_read_filename(in, value) <= 0)
519 dh = PEM_read_bio_DHparams(in, NULL, NULL, NULL);
525 rv = SSL_CTX_set_tmp_dh(cctx->ctx, dh);
527 rv = SSL_set_tmp_dh(cctx->ssl, dh);
535 static int cmd_RecordPadding(SSL_CONF_CTX *cctx, const char *value)
538 int block_size = atoi(value);
541 * All we care about is a non-negative value,
542 * the setters check the range
544 if (block_size >= 0) {
546 rv = SSL_CTX_set_block_padding(cctx->ctx, block_size);
548 rv = SSL_set_block_padding(cctx->ssl, block_size);
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("no_tls1_3", 0),
579 SSL_CONF_CMD_SWITCH("bugs", 0),
580 SSL_CONF_CMD_SWITCH("no_comp", 0),
581 SSL_CONF_CMD_SWITCH("comp", 0),
582 SSL_CONF_CMD_SWITCH("ecdh_single", SSL_CONF_FLAG_SERVER),
583 SSL_CONF_CMD_SWITCH("no_ticket", 0),
584 SSL_CONF_CMD_SWITCH("serverpref", SSL_CONF_FLAG_SERVER),
585 SSL_CONF_CMD_SWITCH("legacy_renegotiation", 0),
586 SSL_CONF_CMD_SWITCH("legacy_server_connect", SSL_CONF_FLAG_SERVER),
587 SSL_CONF_CMD_SWITCH("no_renegotiation", 0),
588 SSL_CONF_CMD_SWITCH("no_resumption_on_reneg", SSL_CONF_FLAG_SERVER),
589 SSL_CONF_CMD_SWITCH("no_legacy_server_connect", SSL_CONF_FLAG_SERVER),
590 SSL_CONF_CMD_SWITCH("allow_no_dhe_kex", 0),
591 SSL_CONF_CMD_SWITCH("strict", 0),
592 SSL_CONF_CMD_STRING(SignatureAlgorithms, "sigalgs", 0),
593 SSL_CONF_CMD_STRING(ClientSignatureAlgorithms, "client_sigalgs", 0),
594 SSL_CONF_CMD_STRING(Curves, "curves", 0),
595 SSL_CONF_CMD_STRING(Groups, "groups", 0),
596 #ifndef OPENSSL_NO_EC
597 SSL_CONF_CMD_STRING(ECDHParameters, "named_curve", SSL_CONF_FLAG_SERVER),
599 SSL_CONF_CMD_STRING(CipherString, "cipher", 0),
600 SSL_CONF_CMD_STRING(Protocol, NULL, 0),
601 SSL_CONF_CMD_STRING(MinProtocol, "min_protocol", 0),
602 SSL_CONF_CMD_STRING(MaxProtocol, "max_protocol", 0),
603 SSL_CONF_CMD_STRING(Options, NULL, 0),
604 SSL_CONF_CMD_STRING(VerifyMode, NULL, 0),
605 SSL_CONF_CMD(Certificate, "cert", SSL_CONF_FLAG_CERTIFICATE,
607 SSL_CONF_CMD(PrivateKey, "key", SSL_CONF_FLAG_CERTIFICATE,
609 SSL_CONF_CMD(ServerInfoFile, NULL,
610 SSL_CONF_FLAG_SERVER | SSL_CONF_FLAG_CERTIFICATE,
612 SSL_CONF_CMD(ChainCAPath, "chainCApath", SSL_CONF_FLAG_CERTIFICATE,
614 SSL_CONF_CMD(ChainCAFile, "chainCAfile", SSL_CONF_FLAG_CERTIFICATE,
616 SSL_CONF_CMD(VerifyCAPath, "verifyCApath", SSL_CONF_FLAG_CERTIFICATE,
618 SSL_CONF_CMD(VerifyCAFile, "verifyCAfile", SSL_CONF_FLAG_CERTIFICATE,
620 SSL_CONF_CMD(RequestCAFile, "requestCAFile", SSL_CONF_FLAG_CERTIFICATE,
622 SSL_CONF_CMD(ClientCAFile, NULL,
623 SSL_CONF_FLAG_SERVER | SSL_CONF_FLAG_CERTIFICATE,
625 SSL_CONF_CMD(RequestCAPath, NULL, SSL_CONF_FLAG_CERTIFICATE,
627 SSL_CONF_CMD(ClientCAPath, NULL,
628 SSL_CONF_FLAG_SERVER | SSL_CONF_FLAG_CERTIFICATE,
630 #ifndef OPENSSL_NO_DH
631 SSL_CONF_CMD(DHParameters, "dhparam",
632 SSL_CONF_FLAG_SERVER | SSL_CONF_FLAG_CERTIFICATE,
635 SSL_CONF_CMD_STRING(RecordPadding, "record_padding", 0)
638 /* Supported switches: must match order of switches in ssl_conf_cmds */
639 static const ssl_switch_tbl ssl_cmd_switches[] = {
640 {SSL_OP_NO_SSLv3, 0}, /* no_ssl3 */
641 {SSL_OP_NO_TLSv1, 0}, /* no_tls1 */
642 {SSL_OP_NO_TLSv1_1, 0}, /* no_tls1_1 */
643 {SSL_OP_NO_TLSv1_2, 0}, /* no_tls1_2 */
644 {SSL_OP_NO_TLSv1_3, 0}, /* no_tls1_3 */
645 {SSL_OP_ALL, 0}, /* bugs */
646 {SSL_OP_NO_COMPRESSION, 0}, /* no_comp */
647 {SSL_OP_NO_COMPRESSION, SSL_TFLAG_INV}, /* comp */
648 {SSL_OP_SINGLE_ECDH_USE, 0}, /* ecdh_single */
649 {SSL_OP_NO_TICKET, 0}, /* no_ticket */
650 {SSL_OP_CIPHER_SERVER_PREFERENCE, 0}, /* serverpref */
651 /* legacy_renegotiation */
652 {SSL_OP_ALLOW_UNSAFE_LEGACY_RENEGOTIATION, 0},
653 /* legacy_server_connect */
654 {SSL_OP_LEGACY_SERVER_CONNECT, 0},
655 /* no_renegotiation */
656 {SSL_OP_NO_RENEGOTIATION, 0},
657 /* no_resumption_on_reneg */
658 {SSL_OP_NO_SESSION_RESUMPTION_ON_RENEGOTIATION, 0},
659 /* no_legacy_server_connect */
660 {SSL_OP_LEGACY_SERVER_CONNECT, SSL_TFLAG_INV},
661 /* allow_no_dhe_kex */
662 {SSL_OP_ALLOW_NO_DHE_KEX, 0},
663 {SSL_CERT_FLAG_TLS_STRICT, SSL_TFLAG_CERT}, /* strict */
666 static int ssl_conf_cmd_skip_prefix(SSL_CONF_CTX *cctx, const char **pcmd)
670 /* If a prefix is set, check and skip */
672 if (strlen(*pcmd) <= cctx->prefixlen)
674 if (cctx->flags & SSL_CONF_FLAG_CMDLINE &&
675 strncmp(*pcmd, cctx->prefix, cctx->prefixlen))
677 if (cctx->flags & SSL_CONF_FLAG_FILE &&
678 strncasecmp(*pcmd, cctx->prefix, cctx->prefixlen))
680 *pcmd += cctx->prefixlen;
681 } else if (cctx->flags & SSL_CONF_FLAG_CMDLINE) {
682 if (**pcmd != '-' || !(*pcmd)[1])
689 /* Determine if a command is allowed according to cctx flags */
690 static int ssl_conf_cmd_allowed(SSL_CONF_CTX *cctx, const ssl_conf_cmd_tbl * t)
692 unsigned int tfl = t->flags;
693 unsigned int cfl = cctx->flags;
694 if ((tfl & SSL_CONF_FLAG_SERVER) && !(cfl & SSL_CONF_FLAG_SERVER))
696 if ((tfl & SSL_CONF_FLAG_CLIENT) && !(cfl & SSL_CONF_FLAG_CLIENT))
698 if ((tfl & SSL_CONF_FLAG_CERTIFICATE)
699 && !(cfl & SSL_CONF_FLAG_CERTIFICATE))
704 static const ssl_conf_cmd_tbl *ssl_conf_cmd_lookup(SSL_CONF_CTX *cctx,
707 const ssl_conf_cmd_tbl *t;
712 /* Look for matching parameter name in table */
713 for (i = 0, t = ssl_conf_cmds; i < OSSL_NELEM(ssl_conf_cmds); i++, t++) {
714 if (ssl_conf_cmd_allowed(cctx, t)) {
715 if (cctx->flags & SSL_CONF_FLAG_CMDLINE) {
716 if (t->str_cmdline && strcmp(t->str_cmdline, cmd) == 0)
719 if (cctx->flags & SSL_CONF_FLAG_FILE) {
720 if (t->str_file && strcasecmp(t->str_file, cmd) == 0)
728 static int ctrl_switch_option(SSL_CONF_CTX *cctx, const ssl_conf_cmd_tbl * cmd)
730 /* Find index of command in table */
731 size_t idx = cmd - ssl_conf_cmds;
732 const ssl_switch_tbl *scmd;
733 /* Sanity check index */
734 if (idx >= OSSL_NELEM(ssl_cmd_switches))
736 /* Obtain switches entry with same index */
737 scmd = ssl_cmd_switches + idx;
738 ssl_set_option(cctx, scmd->name_flags, scmd->option_value, 1);
742 int SSL_CONF_cmd(SSL_CONF_CTX *cctx, const char *cmd, const char *value)
744 const ssl_conf_cmd_tbl *runcmd;
746 SSLerr(SSL_F_SSL_CONF_CMD, SSL_R_INVALID_NULL_CMD_NAME);
750 if (!ssl_conf_cmd_skip_prefix(cctx, &cmd))
753 runcmd = ssl_conf_cmd_lookup(cctx, cmd);
757 if (runcmd->value_type == SSL_CONF_TYPE_NONE) {
758 return ctrl_switch_option(cctx, runcmd);
762 rv = runcmd->cmd(cctx, value);
767 if (cctx->flags & SSL_CONF_FLAG_SHOW_ERRORS) {
768 SSLerr(SSL_F_SSL_CONF_CMD, SSL_R_BAD_VALUE);
769 ERR_add_error_data(4, "cmd=", cmd, ", value=", value);
774 if (cctx->flags & SSL_CONF_FLAG_SHOW_ERRORS) {
775 SSLerr(SSL_F_SSL_CONF_CMD, SSL_R_UNKNOWN_CMD_NAME);
776 ERR_add_error_data(2, "cmd=", cmd);
782 int SSL_CONF_cmd_argv(SSL_CONF_CTX *cctx, int *pargc, char ***pargv)
785 const char *arg = NULL, *argn;
786 if (pargc && *pargc == 0)
788 if (!pargc || *pargc > 0)
792 if (!pargc || *pargc > 1)
796 cctx->flags &= ~SSL_CONF_FLAG_FILE;
797 cctx->flags |= SSL_CONF_FLAG_CMDLINE;
798 rv = SSL_CONF_cmd(cctx, arg, argn);
800 /* Success: update pargc, pargv */
806 /* Unknown switch: indicate no arguments processed */
809 /* Some error occurred processing command, return fatal error */
815 int SSL_CONF_cmd_value_type(SSL_CONF_CTX *cctx, const char *cmd)
817 if (ssl_conf_cmd_skip_prefix(cctx, &cmd)) {
818 const ssl_conf_cmd_tbl *runcmd;
819 runcmd = ssl_conf_cmd_lookup(cctx, cmd);
821 return runcmd->value_type;
823 return SSL_CONF_TYPE_UNKNOWN;
826 SSL_CONF_CTX *SSL_CONF_CTX_new(void)
828 SSL_CONF_CTX *ret = OPENSSL_zalloc(sizeof(*ret));
833 int SSL_CONF_CTX_finish(SSL_CONF_CTX *cctx)
835 /* See if any certificates are missing private keys */
842 if (c && cctx->flags & SSL_CONF_FLAG_REQUIRE_PRIVATE) {
843 for (i = 0; i < SSL_PKEY_NUM; i++) {
844 const char *p = cctx->cert_filename[i];
846 * If missing private key try to load one from certificate file
848 if (p && !c->pkeys[i].privatekey) {
849 if (!cmd_PrivateKey(cctx, p))
856 SSL_set0_CA_list(cctx->ssl, cctx->canames);
858 SSL_CTX_set0_CA_list(cctx->ctx, cctx->canames);
860 sk_X509_NAME_pop_free(cctx->canames, X509_NAME_free);
861 cctx->canames = NULL;
866 void SSL_CONF_CTX_free(SSL_CONF_CTX *cctx)
870 for (i = 0; i < SSL_PKEY_NUM; i++)
871 OPENSSL_free(cctx->cert_filename[i]);
872 OPENSSL_free(cctx->prefix);
873 sk_X509_NAME_pop_free(cctx->canames, X509_NAME_free);
878 unsigned int SSL_CONF_CTX_set_flags(SSL_CONF_CTX *cctx, unsigned int flags)
880 cctx->flags |= flags;
884 unsigned int SSL_CONF_CTX_clear_flags(SSL_CONF_CTX *cctx, unsigned int flags)
886 cctx->flags &= ~flags;
890 int SSL_CONF_CTX_set1_prefix(SSL_CONF_CTX *cctx, const char *pre)
894 tmp = OPENSSL_strdup(pre);
898 OPENSSL_free(cctx->prefix);
901 cctx->prefixlen = strlen(tmp);
907 void SSL_CONF_CTX_set_ssl(SSL_CONF_CTX *cctx, SSL *ssl)
912 cctx->poptions = &ssl->options;
913 cctx->min_version = &ssl->min_proto_version;
914 cctx->max_version = &ssl->max_proto_version;
915 cctx->pcert_flags = &ssl->cert->cert_flags;
916 cctx->pvfy_flags = &ssl->verify_mode;
918 cctx->poptions = NULL;
919 cctx->min_version = NULL;
920 cctx->max_version = NULL;
921 cctx->pcert_flags = NULL;
922 cctx->pvfy_flags = NULL;
926 void SSL_CONF_CTX_set_ssl_ctx(SSL_CONF_CTX *cctx, SSL_CTX *ctx)
931 cctx->poptions = &ctx->options;
932 cctx->min_version = &ctx->min_proto_version;
933 cctx->max_version = &ctx->max_proto_version;
934 cctx->pcert_flags = &ctx->cert->cert_flags;
935 cctx->pvfy_flags = &ctx->verify_mode;
937 cctx->poptions = NULL;
938 cctx->min_version = NULL;
939 cctx->max_version = NULL;
940 cctx->pcert_flags = NULL;
941 cctx->pvfy_flags = NULL;