ssl/ssl_conf.c

   1 /*
   2  * Copyright 2012-2022 The OpenSSL Project Authors. All Rights Reserved.
   3  *
   4  * Licensed under the Apache License 2.0 (the "License").  You may not use
   5  * this file except in compliance with the License.  You can obtain a copy
   6  * in the file LICENSE in the source distribution or at
   7  * https://www.openssl.org/source/license.html
   8  */
   9
  10 #include <stdio.h>
  11 #include "ssl_local.h"
  12 #include <openssl/conf.h>
  13 #include <openssl/objects.h>
  14 #include <openssl/decoder.h>
  15 #include <openssl/core_dispatch.h>
  16 #include "internal/nelem.h"
  17
  18 /*
  19  * structure holding name tables. This is used for permitted elements in lists
  20  * such as TLSv1.
  21  */
  22
  23 typedef struct {
  24     const char *name;
  25     int namelen;
  26     unsigned int name_flags;
  27     uint64_t option_value;
  28 } ssl_flag_tbl;
  29
  30 /* Switch table: use for single command line switches like no_tls2 */
  31 typedef struct {
  32     uint64_t option_value;
  33     unsigned int name_flags;
  34 } ssl_switch_tbl;
  35
  36 /* Sense of name is inverted e.g. "TLSv1" will clear SSL_OP_NO_TLSv1 */
  37 #define SSL_TFLAG_INV   0x1
  38 /* Mask for type of flag referred to */
  39 #define SSL_TFLAG_TYPE_MASK 0xf00
  40 /* Flag is for options */
  41 #define SSL_TFLAG_OPTION    0x000
  42 /* Flag is for cert_flags */
  43 #define SSL_TFLAG_CERT      0x100
  44 /* Flag is for verify mode */
  45 #define SSL_TFLAG_VFY       0x200
  46 /* Option can only be used for clients */
  47 #define SSL_TFLAG_CLIENT SSL_CONF_FLAG_CLIENT
  48 /* Option can only be used for servers */
  49 #define SSL_TFLAG_SERVER SSL_CONF_FLAG_SERVER
  50 #define SSL_TFLAG_BOTH (SSL_TFLAG_CLIENT|SSL_TFLAG_SERVER)
  51
  52 #define SSL_FLAG_TBL(str, flag) \
  53         {str, (int)(sizeof(str) - 1), SSL_TFLAG_BOTH, flag}
  54 #define SSL_FLAG_TBL_SRV(str, flag) \
  55         {str, (int)(sizeof(str) - 1), SSL_TFLAG_SERVER, flag}
  56 #define SSL_FLAG_TBL_CLI(str, flag) \
  57         {str, (int)(sizeof(str) - 1), SSL_TFLAG_CLIENT, flag}
  58 #define SSL_FLAG_TBL_INV(str, flag) \
  59         {str, (int)(sizeof(str) - 1), SSL_TFLAG_INV|SSL_TFLAG_BOTH, flag}
  60 #define SSL_FLAG_TBL_SRV_INV(str, flag) \
  61         {str, (int)(sizeof(str) - 1), SSL_TFLAG_INV|SSL_TFLAG_SERVER, flag}
  62 #define SSL_FLAG_TBL_CERT(str, flag) \
  63         {str, (int)(sizeof(str) - 1), SSL_TFLAG_CERT|SSL_TFLAG_BOTH, flag}
  64
  65 #define SSL_FLAG_VFY_CLI(str, flag) \
  66         {str, (int)(sizeof(str) - 1), SSL_TFLAG_VFY | SSL_TFLAG_CLIENT, flag}
  67 #define SSL_FLAG_VFY_SRV(str, flag) \
  68         {str, (int)(sizeof(str) - 1), SSL_TFLAG_VFY | SSL_TFLAG_SERVER, flag}
  69
  70 /*
  71  * Opaque structure containing SSL configuration context.
  72  */
  73
  74 struct ssl_conf_ctx_st {
  75     /*
  76      * Various flags indicating (among other things) which options we will
  77      * recognise.
  78      */
  79     unsigned int flags;
  80     /* Prefix and length of commands */
  81     char *prefix;
  82     size_t prefixlen;
  83     /* SSL_CTX or SSL structure to perform operations on */
  84     SSL_CTX *ctx;
  85     SSL *ssl;
  86     /* Pointer to SSL or SSL_CTX options field or NULL if none */
  87     uint64_t *poptions;
  88     /* Certificate filenames for each type */
  89     char *cert_filename[SSL_PKEY_NUM];
  90     /* Pointer to SSL or SSL_CTX cert_flags or NULL if none */
  91     uint32_t *pcert_flags;
  92     /* Pointer to SSL or SSL_CTX verify_mode or NULL if none */
  93     uint32_t *pvfy_flags;
  94     /* Pointer to SSL or SSL_CTX min_version field or NULL if none */
  95     int *min_version;
  96     /* Pointer to SSL or SSL_CTX max_version field or NULL if none */
  97     int *max_version;
  98     /* Current flag table being worked on */
  99     const ssl_flag_tbl *tbl;
 100     /* Size of table */
 101     size_t ntbl;
 102     /* Client CA names */
 103     STACK_OF(X509_NAME) *canames;
 104 };
 105
 106 static void ssl_set_option(SSL_CONF_CTX *cctx, unsigned int name_flags,
 107                            uint64_t option_value, int onoff)
 108 {
 109     uint32_t *pflags;
 110
 111     if (cctx->poptions == NULL)
 112         return;
 113     if (name_flags & SSL_TFLAG_INV)
 114         onoff ^= 1;
 115     switch (name_flags & SSL_TFLAG_TYPE_MASK) {
 116
 117     case SSL_TFLAG_CERT:
 118         pflags = cctx->pcert_flags;
 119         break;
 120
 121     case SSL_TFLAG_VFY:
 122         pflags = cctx->pvfy_flags;
 123         break;
 124
 125     case SSL_TFLAG_OPTION:
 126         if (onoff)
 127             *cctx->poptions |= option_value;
 128         else
 129             *cctx->poptions &= ~option_value;
 130         return;
 131
 132     default:
 133         return;
 134
 135     }
 136     if (onoff)
 137         *pflags |= option_value;
 138     else
 139         *pflags &= ~option_value;
 140 }
 141
 142 static int ssl_match_option(SSL_CONF_CTX *cctx, const ssl_flag_tbl *tbl,
 143                             const char *name, int namelen, int onoff)
 144 {
 145     /* If name not relevant for context skip */
 146     if (!(cctx->flags & tbl->name_flags & SSL_TFLAG_BOTH))
 147         return 0;
 148     if (namelen == -1) {
 149         if (strcmp(tbl->name, name))
 150             return 0;
 151     } else if (tbl->namelen != namelen
 152                || OPENSSL_strncasecmp(tbl->name, name, namelen))
 153         return 0;
 154     ssl_set_option(cctx, tbl->name_flags, tbl->option_value, onoff);
 155     return 1;
 156 }
 157
 158 static int ssl_set_option_list(const char *elem, int len, void *usr)
 159 {
 160     SSL_CONF_CTX *cctx = usr;
 161     size_t i;
 162     const ssl_flag_tbl *tbl;
 163     int onoff = 1;
 164     /*
 165      * len == -1 indicates not being called in list context, just for single
 166      * command line switches, so don't allow +, -.
 167      */
 168     if (elem == NULL)
 169         return 0;
 170     if (len != -1) {
 171         if (*elem == '+') {
 172             elem++;
 173             len--;
 174             onoff = 1;
 175         } else if (*elem == '-') {
 176             elem++;
 177             len--;
 178             onoff = 0;
 179         }
 180     }
 181     for (i = 0, tbl = cctx->tbl; i < cctx->ntbl; i++, tbl++) {
 182         if (ssl_match_option(cctx, tbl, elem, len, onoff))
 183             return 1;
 184     }
 185     return 0;
 186 }
 187
 188 /* Set supported signature algorithms */
 189 static int cmd_SignatureAlgorithms(SSL_CONF_CTX *cctx, const char *value)
 190 {
 191     int rv;
 192     if (cctx->ssl)
 193         rv = SSL_set1_sigalgs_list(cctx->ssl, value);
 194     /* NB: ctx == NULL performs syntax checking only */
 195     else
 196         rv = SSL_CTX_set1_sigalgs_list(cctx->ctx, value);
 197     return rv > 0;
 198 }
 199
 200 /* Set supported client signature algorithms */
 201 static int cmd_ClientSignatureAlgorithms(SSL_CONF_CTX *cctx, const char *value)
 202 {
 203     int rv;
 204     if (cctx->ssl)
 205         rv = SSL_set1_client_sigalgs_list(cctx->ssl, value);
 206     /* NB: ctx == NULL performs syntax checking only */
 207     else
 208         rv = SSL_CTX_set1_client_sigalgs_list(cctx->ctx, value);
 209     return rv > 0;
 210 }
 211
 212 static int cmd_Groups(SSL_CONF_CTX *cctx, const char *value)
 213 {
 214     int rv;
 215     if (cctx->ssl)
 216         rv = SSL_set1_groups_list(cctx->ssl, value);
 217     /* NB: ctx == NULL performs syntax checking only */
 218     else
 219         rv = SSL_CTX_set1_groups_list(cctx->ctx, value);
 220     return rv > 0;
 221 }
 222
 223 /* This is the old name for cmd_Groups - retained for backwards compatibility */
 224 static int cmd_Curves(SSL_CONF_CTX *cctx, const char *value)
 225 {
 226     return cmd_Groups(cctx, value);
 227 }
 228
 229 /* ECDH temporary parameters */
 230 static int cmd_ECDHParameters(SSL_CONF_CTX *cctx, const char *value)
 231 {
 232     int rv = 1;
 233
 234     /* Ignore values supported by 1.0.2 for the automatic selection */
 235     if ((cctx->flags & SSL_CONF_FLAG_FILE)
 236             && (OPENSSL_strcasecmp(value, "+automatic") == 0
 237                 || OPENSSL_strcasecmp(value, "automatic") == 0))
 238         return 1;
 239     if ((cctx->flags & SSL_CONF_FLAG_CMDLINE) &&
 240         strcmp(value, "auto") == 0)
 241         return 1;
 242
 243     /* ECDHParameters accepts a single group name */
 244     if (strstr(value, ":") != NULL)
 245         return 0;
 246
 247     if (cctx->ctx)
 248         rv = SSL_CTX_set1_groups_list(cctx->ctx, value);
 249     else if (cctx->ssl)
 250         rv = SSL_set1_groups_list(cctx->ssl, value);
 251
 252     return rv > 0;
 253 }
 254
 255 static int cmd_CipherString(SSL_CONF_CTX *cctx, const char *value)
 256 {
 257     int rv = 1;
 258
 259     if (cctx->ctx)
 260         rv = SSL_CTX_set_cipher_list(cctx->ctx, value);
 261     if (cctx->ssl)
 262         rv = SSL_set_cipher_list(cctx->ssl, value);
 263     return rv > 0;
 264 }
 265
 266 static int cmd_Ciphersuites(SSL_CONF_CTX *cctx, const char *value)
 267 {
 268     int rv = 1;
 269
 270     if (cctx->ctx)
 271         rv = SSL_CTX_set_ciphersuites(cctx->ctx, value);
 272     if (cctx->ssl)
 273         rv = SSL_set_ciphersuites(cctx->ssl, value);
 274     return rv > 0;
 275 }
 276
 277 static int cmd_Protocol(SSL_CONF_CTX *cctx, const char *value)
 278 {
 279     static const ssl_flag_tbl ssl_protocol_list[] = {
 280         SSL_FLAG_TBL_INV("ALL", SSL_OP_NO_SSL_MASK),
 281         SSL_FLAG_TBL_INV("SSLv2", SSL_OP_NO_SSLv2),
 282         SSL_FLAG_TBL_INV("SSLv3", SSL_OP_NO_SSLv3),
 283         SSL_FLAG_TBL_INV("TLSv1", SSL_OP_NO_TLSv1),
 284         SSL_FLAG_TBL_INV("TLSv1.1", SSL_OP_NO_TLSv1_1),
 285         SSL_FLAG_TBL_INV("TLSv1.2", SSL_OP_NO_TLSv1_2),
 286         SSL_FLAG_TBL_INV("TLSv1.3", SSL_OP_NO_TLSv1_3),
 287         SSL_FLAG_TBL_INV("DTLSv1", SSL_OP_NO_DTLSv1),
 288         SSL_FLAG_TBL_INV("DTLSv1.2", SSL_OP_NO_DTLSv1_2)
 289     };
 290     cctx->tbl = ssl_protocol_list;
 291     cctx->ntbl = OSSL_NELEM(ssl_protocol_list);
 292     return CONF_parse_list(value, ',', 1, ssl_set_option_list, cctx);
 293 }
 294
 295 /*
 296  * protocol_from_string - converts a protocol version string to a number
 297  *
 298  * Returns -1 on failure or the version on success
 299  */
 300 static int protocol_from_string(const char *value)
 301 {
 302     struct protocol_versions {
 303         const char *name;
 304         int version;
 305     };
 306     /*
 307      * Note: To avoid breaking previously valid configurations, we must retain
 308      * legacy entries in this table even if the underlying protocol is no
 309      * longer supported.  This also means that the constants SSL3_VERSION, ...
 310      * need to be retained indefinitely.  This table can only grow, never
 311      * shrink.
 312      */
 313     static const struct protocol_versions versions[] = {
 314         {"None", 0},
 315         {"SSLv3", SSL3_VERSION},
 316         {"TLSv1", TLS1_VERSION},
 317         {"TLSv1.1", TLS1_1_VERSION},
 318         {"TLSv1.2", TLS1_2_VERSION},
 319         {"TLSv1.3", TLS1_3_VERSION},
 320         {"DTLSv1", DTLS1_VERSION},
 321         {"DTLSv1.2", DTLS1_2_VERSION}
 322     };
 323     size_t i;
 324     size_t n = OSSL_NELEM(versions);
 325
 326     for (i = 0; i < n; i++)
 327         if (strcmp(versions[i].name, value) == 0)
 328             return versions[i].version;
 329     return -1;
 330 }
 331
 332 static int min_max_proto(SSL_CONF_CTX *cctx, const char *value, int *bound)
 333 {
 334     int method_version;
 335     int new_version;
 336
 337     if (cctx->ctx != NULL)
 338         method_version = cctx->ctx->method->version;
 339     else if (cctx->ssl != NULL)
 340         method_version = cctx->ssl->defltmeth->version;
 341     else
 342         return 0;
 343     if ((new_version = protocol_from_string(value)) < 0)
 344         return 0;
 345     return ssl_set_version_bound(method_version, new_version, bound);
 346 }
 347
 348 /*
 349  * cmd_MinProtocol - Set min protocol version
 350  * @cctx: config structure to save settings in
 351  * @value: The min protocol version in string form
 352  *
 353  * Returns 1 on success and 0 on failure.
 354  */
 355 static int cmd_MinProtocol(SSL_CONF_CTX *cctx, const char *value)
 356 {
 357     return min_max_proto(cctx, value, cctx->min_version);
 358 }
 359
 360 /*
 361  * cmd_MaxProtocol - Set max protocol version
 362  * @cctx: config structure to save settings in
 363  * @value: The max protocol version in string form
 364  *
 365  * Returns 1 on success and 0 on failure.
 366  */
 367 static int cmd_MaxProtocol(SSL_CONF_CTX *cctx, const char *value)
 368 {
 369     return min_max_proto(cctx, value, cctx->max_version);
 370 }
 371
 372 static int cmd_Options(SSL_CONF_CTX *cctx, const char *value)
 373 {
 374     static const ssl_flag_tbl ssl_option_list[] = {
 375         SSL_FLAG_TBL_INV("SessionTicket", SSL_OP_NO_TICKET),
 376         SSL_FLAG_TBL_INV("EmptyFragments",
 377                          SSL_OP_DONT_INSERT_EMPTY_FRAGMENTS),
 378         SSL_FLAG_TBL("Bugs", SSL_OP_ALL),
 379         SSL_FLAG_TBL_INV("Compression", SSL_OP_NO_COMPRESSION),
 380         SSL_FLAG_TBL_SRV("ServerPreference", SSL_OP_CIPHER_SERVER_PREFERENCE),
 381         SSL_FLAG_TBL_SRV("NoResumptionOnRenegotiation",
 382                          SSL_OP_NO_SESSION_RESUMPTION_ON_RENEGOTIATION),
 383         SSL_FLAG_TBL_SRV("DHSingle", SSL_OP_SINGLE_DH_USE),
 384         SSL_FLAG_TBL_SRV("ECDHSingle", SSL_OP_SINGLE_ECDH_USE),
 385         SSL_FLAG_TBL("UnsafeLegacyRenegotiation",
 386                      SSL_OP_ALLOW_UNSAFE_LEGACY_RENEGOTIATION),
 387         SSL_FLAG_TBL("UnsafeLegacyServerConnect",
 388                      SSL_OP_LEGACY_SERVER_CONNECT),
 389         SSL_FLAG_TBL("ClientRenegotiation",
 390                      SSL_OP_ALLOW_CLIENT_RENEGOTIATION),
 391         SSL_FLAG_TBL_INV("EncryptThenMac", SSL_OP_NO_ENCRYPT_THEN_MAC),
 392         SSL_FLAG_TBL("NoRenegotiation", SSL_OP_NO_RENEGOTIATION),
 393         SSL_FLAG_TBL("AllowNoDHEKEX", SSL_OP_ALLOW_NO_DHE_KEX),
 394         SSL_FLAG_TBL("PrioritizeChaCha", SSL_OP_PRIORITIZE_CHACHA),
 395         SSL_FLAG_TBL("MiddleboxCompat", SSL_OP_ENABLE_MIDDLEBOX_COMPAT),
 396         SSL_FLAG_TBL_INV("AntiReplay", SSL_OP_NO_ANTI_REPLAY),
 397         SSL_FLAG_TBL_INV("ExtendedMasterSecret", SSL_OP_NO_EXTENDED_MASTER_SECRET),
 398         SSL_FLAG_TBL_INV("CANames", SSL_OP_DISABLE_TLSEXT_CA_NAMES),
 399         SSL_FLAG_TBL("KTLS", SSL_OP_ENABLE_KTLS),
 400         SSL_FLAG_TBL_CERT("StrictCertCheck", SSL_CERT_FLAG_TLS_STRICT),
 401         SSL_FLAG_TBL_INV("TxCertificateCompression", SSL_OP_NO_TX_CERTIFICATE_COMPRESSION),
 402         SSL_FLAG_TBL_INV("RxCertificateCompression", SSL_OP_NO_RX_CERTIFICATE_COMPRESSION),
 403         SSL_FLAG_TBL("KTLSTxZerocopySendfile", SSL_OP_ENABLE_KTLS_TX_ZEROCOPY_SENDFILE),
 404     };
 405     if (value == NULL)
 406         return -3;
 407     cctx->tbl = ssl_option_list;
 408     cctx->ntbl = OSSL_NELEM(ssl_option_list);
 409     return CONF_parse_list(value, ',', 1, ssl_set_option_list, cctx);
 410 }
 411
 412 static int cmd_VerifyMode(SSL_CONF_CTX *cctx, const char *value)
 413 {
 414     static const ssl_flag_tbl ssl_vfy_list[] = {
 415         SSL_FLAG_VFY_CLI("Peer", SSL_VERIFY_PEER),
 416         SSL_FLAG_VFY_SRV("Request", SSL_VERIFY_PEER),
 417         SSL_FLAG_VFY_SRV("Require",
 418                          SSL_VERIFY_PEER | SSL_VERIFY_FAIL_IF_NO_PEER_CERT),
 419         SSL_FLAG_VFY_SRV("Once", SSL_VERIFY_PEER | SSL_VERIFY_CLIENT_ONCE),
 420         SSL_FLAG_VFY_SRV("RequestPostHandshake",
 421                          SSL_VERIFY_PEER | SSL_VERIFY_POST_HANDSHAKE),
 422         SSL_FLAG_VFY_SRV("RequirePostHandshake",
 423                          SSL_VERIFY_PEER | SSL_VERIFY_POST_HANDSHAKE |
 424                          SSL_VERIFY_FAIL_IF_NO_PEER_CERT),
 425     };
 426     if (value == NULL)
 427         return -3;
 428     cctx->tbl = ssl_vfy_list;
 429     cctx->ntbl = OSSL_NELEM(ssl_vfy_list);
 430     return CONF_parse_list(value, ',', 1, ssl_set_option_list, cctx);
 431 }
 432
 433 static int cmd_Certificate(SSL_CONF_CTX *cctx, const char *value)
 434 {
 435     int rv = 1;
 436     CERT *c = NULL;
 437     if (cctx->ctx != NULL) {
 438         rv = SSL_CTX_use_certificate_chain_file(cctx->ctx, value);
 439         c = cctx->ctx->cert;
 440     }
 441     if (cctx->ssl != NULL) {
 442         SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(cctx->ssl);
 443
 444         if (sc != NULL) {
 445             rv = SSL_use_certificate_chain_file(cctx->ssl, value);
 446             c = sc->cert;
 447         } else {
 448             rv = 0;
 449         }
 450     }
 451     if (rv > 0 && c != NULL && cctx->flags & SSL_CONF_FLAG_REQUIRE_PRIVATE) {
 452         char **pfilename = &cctx->cert_filename[c->key - c->pkeys];
 453
 454         OPENSSL_free(*pfilename);
 455         *pfilename = OPENSSL_strdup(value);
 456         if (*pfilename == NULL)
 457             rv = 0;
 458     }
 459
 460     return rv > 0;
 461 }
 462
 463 static int cmd_PrivateKey(SSL_CONF_CTX *cctx, const char *value)
 464 {
 465     int rv = 1;
 466     if (!(cctx->flags & SSL_CONF_FLAG_CERTIFICATE))
 467         return -2;
 468     if (cctx->ctx)
 469         rv = SSL_CTX_use_PrivateKey_file(cctx->ctx, value, SSL_FILETYPE_PEM);
 470     if (cctx->ssl)
 471         rv = SSL_use_PrivateKey_file(cctx->ssl, value, SSL_FILETYPE_PEM);
 472     return rv > 0;
 473 }
 474
 475 static int cmd_ServerInfoFile(SSL_CONF_CTX *cctx, const char *value)
 476 {
 477     int rv = 1;
 478     if (cctx->ctx)
 479         rv = SSL_CTX_use_serverinfo_file(cctx->ctx, value);
 480     return rv > 0;
 481 }
 482
 483 static int do_store(SSL_CONF_CTX *cctx,
 484                     const char *CAfile, const char *CApath, const char *CAstore,
 485                     int verify_store)
 486 {
 487     CERT *cert;
 488     X509_STORE **st;
 489     SSL_CTX *ctx;
 490     OSSL_LIB_CTX *libctx = NULL;
 491     const char *propq = NULL;
 492
 493     if (cctx->ctx != NULL) {
 494         cert = cctx->ctx->cert;
 495         ctx = cctx->ctx;
 496     } else if (cctx->ssl != NULL) {
 497         SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(cctx->ssl);
 498
 499         if (sc == NULL)
 500             return 0;
 501
 502         cert = sc->cert;
 503         ctx = cctx->ssl->ctx;
 504     } else {
 505         return 1;
 506     }
 507     if (ctx != NULL) {
 508         libctx = ctx->libctx;
 509         propq = ctx->propq;
 510     }
 511     st = verify_store ? &cert->verify_store : &cert->chain_store;
 512     if (*st == NULL) {
 513         *st = X509_STORE_new();
 514         if (*st == NULL)
 515             return 0;
 516     }
 517
 518     if (CAfile != NULL && !X509_STORE_load_file_ex(*st, CAfile, libctx, propq))
 519         return 0;
 520     if (CApath != NULL && !X509_STORE_load_path(*st, CApath))
 521         return 0;
 522     if (CAstore != NULL && !X509_STORE_load_store_ex(*st, CAstore, libctx,
 523                                                      propq))
 524         return 0;
 525     return 1;
 526 }
 527
 528 static int cmd_ChainCAPath(SSL_CONF_CTX *cctx, const char *value)
 529 {
 530     return do_store(cctx, NULL, value, NULL, 0);
 531 }
 532
 533 static int cmd_ChainCAFile(SSL_CONF_CTX *cctx, const char *value)
 534 {
 535     return do_store(cctx, value, NULL, NULL, 0);
 536 }
 537
 538 static int cmd_ChainCAStore(SSL_CONF_CTX *cctx, const char *value)
 539 {
 540     return do_store(cctx, NULL, NULL, value, 0);
 541 }
 542
 543 static int cmd_VerifyCAPath(SSL_CONF_CTX *cctx, const char *value)
 544 {
 545     return do_store(cctx, NULL, value, NULL, 1);
 546 }
 547
 548 static int cmd_VerifyCAFile(SSL_CONF_CTX *cctx, const char *value)
 549 {
 550     return do_store(cctx, value, NULL, NULL, 1);
 551 }
 552
 553 static int cmd_VerifyCAStore(SSL_CONF_CTX *cctx, const char *value)
 554 {
 555     return do_store(cctx, NULL, NULL, value, 1);
 556 }
 557
 558 static int cmd_RequestCAFile(SSL_CONF_CTX *cctx, const char *value)
 559 {
 560     if (cctx->canames == NULL)
 561         cctx->canames = sk_X509_NAME_new_null();
 562     if (cctx->canames == NULL)
 563         return 0;
 564     return SSL_add_file_cert_subjects_to_stack(cctx->canames, value);
 565 }
 566
 567 static int cmd_ClientCAFile(SSL_CONF_CTX *cctx, const char *value)
 568 {
 569     return cmd_RequestCAFile(cctx, value);
 570 }
 571
 572 static int cmd_RequestCAPath(SSL_CONF_CTX *cctx, const char *value)
 573 {
 574     if (cctx->canames == NULL)
 575         cctx->canames = sk_X509_NAME_new_null();
 576     if (cctx->canames == NULL)
 577         return 0;
 578     return SSL_add_dir_cert_subjects_to_stack(cctx->canames, value);
 579 }
 580
 581 static int cmd_ClientCAPath(SSL_CONF_CTX *cctx, const char *value)
 582 {
 583     return cmd_RequestCAPath(cctx, value);
 584 }
 585
 586 static int cmd_RequestCAStore(SSL_CONF_CTX *cctx, const char *value)
 587 {
 588     if (cctx->canames == NULL)
 589         cctx->canames = sk_X509_NAME_new_null();
 590     if (cctx->canames == NULL)
 591         return 0;
 592     return SSL_add_store_cert_subjects_to_stack(cctx->canames, value);
 593 }
 594
 595 static int cmd_ClientCAStore(SSL_CONF_CTX *cctx, const char *value)
 596 {
 597     return cmd_RequestCAStore(cctx, value);
 598 }
 599
 600 static int cmd_DHParameters(SSL_CONF_CTX *cctx, const char *value)
 601 {
 602     int rv = 0;
 603     EVP_PKEY *dhpkey = NULL;
 604     BIO *in = NULL;
 605     SSL_CTX *sslctx = (cctx->ssl != NULL) ? cctx->ssl->ctx : cctx->ctx;
 606     OSSL_DECODER_CTX *decoderctx = NULL;
 607
 608     if (cctx->ctx != NULL || cctx->ssl != NULL) {
 609         in = BIO_new(BIO_s_file());
 610         if (in == NULL)
 611             goto end;
 612         if (BIO_read_filename(in, value) <= 0)
 613             goto end;
 614
 615         decoderctx
 616             = OSSL_DECODER_CTX_new_for_pkey(&dhpkey, "PEM", NULL, "DH",
 617                                             OSSL_KEYMGMT_SELECT_DOMAIN_PARAMETERS,
 618                                             sslctx->libctx, sslctx->propq);
 619         if (decoderctx == NULL)
 620             goto end;
 621         ERR_set_mark();
 622         while (!OSSL_DECODER_from_bio(decoderctx, in)
 623                && dhpkey == NULL
 624                && !BIO_eof(in));
 625         OSSL_DECODER_CTX_free(decoderctx);
 626
 627         if (dhpkey == NULL) {
 628             ERR_clear_last_mark();
 629             goto end;
 630         }
 631         ERR_pop_to_mark();
 632     } else {
 633         return 1;
 634     }
 635
 636     if (cctx->ctx != NULL) {
 637         if ((rv = SSL_CTX_set0_tmp_dh_pkey(cctx->ctx, dhpkey)) > 0)
 638             dhpkey = NULL;
 639     }
 640     if (cctx->ssl != NULL) {
 641         if ((rv = SSL_set0_tmp_dh_pkey(cctx->ssl, dhpkey)) > 0)
 642             dhpkey = NULL;
 643     }
 644  end:
 645     EVP_PKEY_free(dhpkey);
 646     BIO_free(in);
 647     return rv > 0;
 648 }
 649
 650 static int cmd_RecordPadding(SSL_CONF_CTX *cctx, const char *value)
 651 {
 652     int rv = 0;
 653     int block_size = atoi(value);
 654
 655     /*
 656      * All we care about is a non-negative value,
 657      * the setters check the range
 658      */
 659     if (block_size >= 0) {
 660         if (cctx->ctx)
 661             rv = SSL_CTX_set_block_padding(cctx->ctx, block_size);
 662         if (cctx->ssl)
 663             rv = SSL_set_block_padding(cctx->ssl, block_size);
 664     }
 665     return rv;
 666 }
 667
 668
 669 static int cmd_NumTickets(SSL_CONF_CTX *cctx, const char *value)
 670 {
 671     int rv = 0;
 672     int num_tickets = atoi(value);
 673
 674     if (num_tickets >= 0) {
 675         if (cctx->ctx)
 676             rv = SSL_CTX_set_num_tickets(cctx->ctx, num_tickets);
 677         if (cctx->ssl)
 678             rv = SSL_set_num_tickets(cctx->ssl, num_tickets);
 679     }
 680     return rv;
 681 }
 682
 683 typedef struct {
 684     int (*cmd) (SSL_CONF_CTX *cctx, const char *value);
 685     const char *str_file;
 686     const char *str_cmdline;
 687     unsigned short flags;
 688     unsigned short value_type;
 689 } ssl_conf_cmd_tbl;
 690
 691 /* Table of supported parameters */
 692
 693 #define SSL_CONF_CMD(name, cmdopt, flags, type) \
 694         {cmd_##name, #name, cmdopt, flags, type}
 695
 696 #define SSL_CONF_CMD_STRING(name, cmdopt, flags) \
 697         SSL_CONF_CMD(name, cmdopt, flags, SSL_CONF_TYPE_STRING)
 698
 699 #define SSL_CONF_CMD_SWITCH(name, flags) \
 700         {0, NULL, name, flags, SSL_CONF_TYPE_NONE}
 701
 702 /* See apps/include/opt.h if you change this table. */
 703 /* The SSL_CONF_CMD_SWITCH should be the same order as ssl_cmd_switches */
 704 static const ssl_conf_cmd_tbl ssl_conf_cmds[] = {
 705     SSL_CONF_CMD_SWITCH("no_ssl3", 0),
 706     SSL_CONF_CMD_SWITCH("no_tls1", 0),
 707     SSL_CONF_CMD_SWITCH("no_tls1_1", 0),
 708     SSL_CONF_CMD_SWITCH("no_tls1_2", 0),
 709     SSL_CONF_CMD_SWITCH("no_tls1_3", 0),
 710     SSL_CONF_CMD_SWITCH("bugs", 0),
 711     SSL_CONF_CMD_SWITCH("no_comp", 0),
 712     SSL_CONF_CMD_SWITCH("comp", 0),
 713     SSL_CONF_CMD_SWITCH("no_tx_cert_comp", 0),
 714     SSL_CONF_CMD_SWITCH("tx_cert_comp", 0),
 715     SSL_CONF_CMD_SWITCH("no_rx_cert_comp", 0),
 716     SSL_CONF_CMD_SWITCH("rx_cert_comp", 0),
 717     SSL_CONF_CMD_SWITCH("ecdh_single", SSL_CONF_FLAG_SERVER),
 718     SSL_CONF_CMD_SWITCH("no_ticket", 0),
 719     SSL_CONF_CMD_SWITCH("serverpref", SSL_CONF_FLAG_SERVER),
 720     SSL_CONF_CMD_SWITCH("legacy_renegotiation", 0),
 721     SSL_CONF_CMD_SWITCH("client_renegotiation", SSL_CONF_FLAG_SERVER),
 722     SSL_CONF_CMD_SWITCH("legacy_server_connect", SSL_CONF_FLAG_CLIENT),
 723     SSL_CONF_CMD_SWITCH("no_renegotiation", 0),
 724     SSL_CONF_CMD_SWITCH("no_resumption_on_reneg", SSL_CONF_FLAG_SERVER),
 725     SSL_CONF_CMD_SWITCH("no_legacy_server_connect", SSL_CONF_FLAG_CLIENT),
 726     SSL_CONF_CMD_SWITCH("allow_no_dhe_kex", 0),
 727     SSL_CONF_CMD_SWITCH("prioritize_chacha", SSL_CONF_FLAG_SERVER),
 728     SSL_CONF_CMD_SWITCH("strict", 0),
 729     SSL_CONF_CMD_SWITCH("no_middlebox", 0),
 730     SSL_CONF_CMD_SWITCH("anti_replay", SSL_CONF_FLAG_SERVER),
 731     SSL_CONF_CMD_SWITCH("no_anti_replay", SSL_CONF_FLAG_SERVER),
 732     SSL_CONF_CMD_SWITCH("no_etm", 0),
 733     SSL_CONF_CMD_SWITCH("no_ems", 0),
 734     SSL_CONF_CMD_STRING(SignatureAlgorithms, "sigalgs", 0),
 735     SSL_CONF_CMD_STRING(ClientSignatureAlgorithms, "client_sigalgs", 0),
 736     SSL_CONF_CMD_STRING(Curves, "curves", 0),
 737     SSL_CONF_CMD_STRING(Groups, "groups", 0),
 738     SSL_CONF_CMD_STRING(ECDHParameters, "named_curve", SSL_CONF_FLAG_SERVER),
 739     SSL_CONF_CMD_STRING(CipherString, "cipher", 0),
 740     SSL_CONF_CMD_STRING(Ciphersuites, "ciphersuites", 0),
 741     SSL_CONF_CMD_STRING(Protocol, NULL, 0),
 742     SSL_CONF_CMD_STRING(MinProtocol, "min_protocol", 0),
 743     SSL_CONF_CMD_STRING(MaxProtocol, "max_protocol", 0),
 744     SSL_CONF_CMD_STRING(Options, NULL, 0),
 745     SSL_CONF_CMD_STRING(VerifyMode, NULL, 0),
 746     SSL_CONF_CMD(Certificate, "cert", SSL_CONF_FLAG_CERTIFICATE,
 747                  SSL_CONF_TYPE_FILE),
 748     SSL_CONF_CMD(PrivateKey, "key", SSL_CONF_FLAG_CERTIFICATE,
 749                  SSL_CONF_TYPE_FILE),
 750     SSL_CONF_CMD(ServerInfoFile, NULL,
 751                  SSL_CONF_FLAG_SERVER | SSL_CONF_FLAG_CERTIFICATE,
 752                  SSL_CONF_TYPE_FILE),
 753     SSL_CONF_CMD(ChainCAPath, "chainCApath", SSL_CONF_FLAG_CERTIFICATE,
 754                  SSL_CONF_TYPE_DIR),
 755     SSL_CONF_CMD(ChainCAFile, "chainCAfile", SSL_CONF_FLAG_CERTIFICATE,
 756                  SSL_CONF_TYPE_FILE),
 757     SSL_CONF_CMD(ChainCAStore, "chainCAstore", SSL_CONF_FLAG_CERTIFICATE,
 758                  SSL_CONF_TYPE_STORE),
 759     SSL_CONF_CMD(VerifyCAPath, "verifyCApath", SSL_CONF_FLAG_CERTIFICATE,
 760                  SSL_CONF_TYPE_DIR),
 761     SSL_CONF_CMD(VerifyCAFile, "verifyCAfile", SSL_CONF_FLAG_CERTIFICATE,
 762                  SSL_CONF_TYPE_FILE),
 763     SSL_CONF_CMD(VerifyCAStore, "verifyCAstore", SSL_CONF_FLAG_CERTIFICATE,
 764                  SSL_CONF_TYPE_STORE),
 765     SSL_CONF_CMD(RequestCAFile, "requestCAFile", SSL_CONF_FLAG_CERTIFICATE,
 766                  SSL_CONF_TYPE_FILE),
 767     SSL_CONF_CMD(ClientCAFile, NULL,
 768                  SSL_CONF_FLAG_SERVER | SSL_CONF_FLAG_CERTIFICATE,
 769                  SSL_CONF_TYPE_FILE),
 770     SSL_CONF_CMD(RequestCAPath, NULL, SSL_CONF_FLAG_CERTIFICATE,
 771                  SSL_CONF_TYPE_DIR),
 772     SSL_CONF_CMD(ClientCAPath, NULL,
 773                  SSL_CONF_FLAG_SERVER | SSL_CONF_FLAG_CERTIFICATE,
 774                  SSL_CONF_TYPE_DIR),
 775     SSL_CONF_CMD(RequestCAStore, "requestCAStore", SSL_CONF_FLAG_CERTIFICATE,
 776                  SSL_CONF_TYPE_STORE),
 777     SSL_CONF_CMD(ClientCAStore, NULL,
 778                  SSL_CONF_FLAG_SERVER | SSL_CONF_FLAG_CERTIFICATE,
 779                  SSL_CONF_TYPE_STORE),
 780     SSL_CONF_CMD(DHParameters, "dhparam",
 781                  SSL_CONF_FLAG_SERVER | SSL_CONF_FLAG_CERTIFICATE,
 782                  SSL_CONF_TYPE_FILE),
 783     SSL_CONF_CMD_STRING(RecordPadding, "record_padding", 0),
 784     SSL_CONF_CMD_STRING(NumTickets, "num_tickets", SSL_CONF_FLAG_SERVER),
 785 };
 786
 787 /* Supported switches: must match order of switches in ssl_conf_cmds */
 788 static const ssl_switch_tbl ssl_cmd_switches[] = {
 789     {SSL_OP_NO_SSLv3, 0},       /* no_ssl3 */
 790     {SSL_OP_NO_TLSv1, 0},       /* no_tls1 */
 791     {SSL_OP_NO_TLSv1_1, 0},     /* no_tls1_1 */
 792     {SSL_OP_NO_TLSv1_2, 0},     /* no_tls1_2 */
 793     {SSL_OP_NO_TLSv1_3, 0},     /* no_tls1_3 */
 794     {SSL_OP_ALL, 0},            /* bugs */
 795     {SSL_OP_NO_COMPRESSION, 0}, /* no_comp */
 796     {SSL_OP_NO_COMPRESSION, SSL_TFLAG_INV}, /* comp */
 797     {SSL_OP_NO_TX_CERTIFICATE_COMPRESSION, 0}, /* no_tx_cert_comp */
 798     {SSL_OP_NO_TX_CERTIFICATE_COMPRESSION, SSL_TFLAG_INV}, /* tx_cert_comp */
 799     {SSL_OP_NO_RX_CERTIFICATE_COMPRESSION, 0}, /* no_rx_cert_comp */
 800     {SSL_OP_NO_RX_CERTIFICATE_COMPRESSION, SSL_TFLAG_INV}, /* rx_cert_comp */
 801     {SSL_OP_SINGLE_ECDH_USE, 0}, /* ecdh_single */
 802     {SSL_OP_NO_TICKET, 0},      /* no_ticket */
 803     {SSL_OP_CIPHER_SERVER_PREFERENCE, 0}, /* serverpref */
 804     /* legacy_renegotiation */
 805     {SSL_OP_ALLOW_UNSAFE_LEGACY_RENEGOTIATION, 0},
 806     /* Allow client renegotiation */
 807     {SSL_OP_ALLOW_CLIENT_RENEGOTIATION, 0},
 808     /* legacy_server_connect */
 809     {SSL_OP_LEGACY_SERVER_CONNECT, 0},
 810     /* no_renegotiation */
 811     {SSL_OP_NO_RENEGOTIATION, 0},
 812     /* no_resumption_on_reneg */
 813     {SSL_OP_NO_SESSION_RESUMPTION_ON_RENEGOTIATION, 0},
 814     /* no_legacy_server_connect */
 815     {SSL_OP_LEGACY_SERVER_CONNECT, SSL_TFLAG_INV},
 816     /* allow_no_dhe_kex */
 817     {SSL_OP_ALLOW_NO_DHE_KEX, 0},
 818     /* chacha reprioritization */
 819     {SSL_OP_PRIORITIZE_CHACHA, 0},
 820     {SSL_CERT_FLAG_TLS_STRICT, SSL_TFLAG_CERT}, /* strict */
 821     /* no_middlebox */
 822     {SSL_OP_ENABLE_MIDDLEBOX_COMPAT, SSL_TFLAG_INV},
 823     /* anti_replay */
 824     {SSL_OP_NO_ANTI_REPLAY, SSL_TFLAG_INV},
 825     /* no_anti_replay */
 826     {SSL_OP_NO_ANTI_REPLAY, 0},
 827     /* no Encrypt-then-Mac */
 828     {SSL_OP_NO_ENCRYPT_THEN_MAC, 0},
 829     /* no Extended master secret */
 830     {SSL_OP_NO_EXTENDED_MASTER_SECRET, 0},
 831 };
 832
 833 static int ssl_conf_cmd_skip_prefix(SSL_CONF_CTX *cctx, const char **pcmd)
 834 {
 835     if (pcmd == NULL || *pcmd == NULL)
 836         return 0;
 837     /* If a prefix is set, check and skip */
 838     if (cctx->prefix) {
 839         if (strlen(*pcmd) <= cctx->prefixlen)
 840             return 0;
 841         if (cctx->flags & SSL_CONF_FLAG_CMDLINE &&
 842             strncmp(*pcmd, cctx->prefix, cctx->prefixlen))
 843             return 0;
 844         if (cctx->flags & SSL_CONF_FLAG_FILE &&
 845             OPENSSL_strncasecmp(*pcmd, cctx->prefix, cctx->prefixlen))
 846             return 0;
 847         *pcmd += cctx->prefixlen;
 848     } else if (cctx->flags & SSL_CONF_FLAG_CMDLINE) {
 849         if (**pcmd != '-' || !(*pcmd)[1])
 850             return 0;
 851         *pcmd += 1;
 852     }
 853     return 1;
 854 }
 855
 856 /* Determine if a command is allowed according to cctx flags */
 857 static int ssl_conf_cmd_allowed(SSL_CONF_CTX *cctx, const ssl_conf_cmd_tbl * t)
 858 {
 859     unsigned int tfl = t->flags;
 860     unsigned int cfl = cctx->flags;
 861     if ((tfl & SSL_CONF_FLAG_SERVER) && !(cfl & SSL_CONF_FLAG_SERVER))
 862         return 0;
 863     if ((tfl & SSL_CONF_FLAG_CLIENT) && !(cfl & SSL_CONF_FLAG_CLIENT))
 864         return 0;
 865     if ((tfl & SSL_CONF_FLAG_CERTIFICATE)
 866         && !(cfl & SSL_CONF_FLAG_CERTIFICATE))
 867         return 0;
 868     return 1;
 869 }
 870
 871 static const ssl_conf_cmd_tbl *ssl_conf_cmd_lookup(SSL_CONF_CTX *cctx,
 872                                                    const char *cmd)
 873 {
 874     const ssl_conf_cmd_tbl *t;
 875     size_t i;
 876     if (cmd == NULL)
 877         return NULL;
 878
 879     /* Look for matching parameter name in table */
 880     for (i = 0, t = ssl_conf_cmds; i < OSSL_NELEM(ssl_conf_cmds); i++, t++) {
 881         if (ssl_conf_cmd_allowed(cctx, t)) {
 882             if (cctx->flags & SSL_CONF_FLAG_CMDLINE) {
 883                 if (t->str_cmdline && strcmp(t->str_cmdline, cmd) == 0)
 884                     return t;
 885             }
 886             if (cctx->flags & SSL_CONF_FLAG_FILE) {
 887                 if (t->str_file && OPENSSL_strcasecmp(t->str_file, cmd) == 0)
 888                     return t;
 889             }
 890         }
 891     }
 892     return NULL;
 893 }
 894
 895 static int ctrl_switch_option(SSL_CONF_CTX *cctx, const ssl_conf_cmd_tbl * cmd)
 896 {
 897     /* Find index of command in table */
 898     size_t idx = cmd - ssl_conf_cmds;
 899     const ssl_switch_tbl *scmd;
 900     /* Sanity check index */
 901     if (idx >= OSSL_NELEM(ssl_cmd_switches))
 902         return 0;
 903     /* Obtain switches entry with same index */
 904     scmd = ssl_cmd_switches + idx;
 905     ssl_set_option(cctx, scmd->name_flags, scmd->option_value, 1);
 906     return 1;
 907 }
 908
 909 int SSL_CONF_cmd(SSL_CONF_CTX *cctx, const char *cmd, const char *value)
 910 {
 911     const ssl_conf_cmd_tbl *runcmd;
 912     if (cmd == NULL) {
 913         ERR_raise(ERR_LIB_SSL, SSL_R_INVALID_NULL_CMD_NAME);
 914         return 0;
 915     }
 916
 917     if (!ssl_conf_cmd_skip_prefix(cctx, &cmd))
 918         return -2;
 919
 920     runcmd = ssl_conf_cmd_lookup(cctx, cmd);
 921
 922     if (runcmd) {
 923         int rv;
 924         if (runcmd->value_type == SSL_CONF_TYPE_NONE) {
 925             return ctrl_switch_option(cctx, runcmd);
 926         }
 927         if (value == NULL)
 928             return -3;
 929         rv = runcmd->cmd(cctx, value);
 930         if (rv > 0)
 931             return 2;
 932         if (rv == -2)
 933             return -2;
 934         if (cctx->flags & SSL_CONF_FLAG_SHOW_ERRORS)
 935             ERR_raise_data(ERR_LIB_SSL, SSL_R_BAD_VALUE,
 936                            "cmd=%s, value=%s", cmd, value);
 937         return 0;
 938     }
 939
 940     if (cctx->flags & SSL_CONF_FLAG_SHOW_ERRORS)
 941         ERR_raise_data(ERR_LIB_SSL, SSL_R_UNKNOWN_CMD_NAME, "cmd=%s", cmd);
 942
 943     return -2;
 944 }
 945
 946 int SSL_CONF_cmd_argv(SSL_CONF_CTX *cctx, int *pargc, char ***pargv)
 947 {
 948     int rv;
 949     const char *arg = NULL, *argn;
 950
 951     if (pargc != NULL && *pargc == 0)
 952         return 0;
 953     if (pargc == NULL || *pargc > 0)
 954         arg = **pargv;
 955     if (arg == NULL)
 956         return 0;
 957     if (pargc == NULL || *pargc > 1)
 958         argn = (*pargv)[1];
 959     else
 960         argn = NULL;
 961     cctx->flags &= ~SSL_CONF_FLAG_FILE;
 962     cctx->flags |= SSL_CONF_FLAG_CMDLINE;
 963     rv = SSL_CONF_cmd(cctx, arg, argn);
 964     if (rv > 0) {
 965         /* Success: update pargc, pargv */
 966         (*pargv) += rv;
 967         if (pargc)
 968             (*pargc) -= rv;
 969         return rv;
 970     }
 971     /* Unknown switch: indicate no arguments processed */
 972     if (rv == -2)
 973         return 0;
 974     /* Some error occurred processing command, return fatal error */
 975     if (rv == 0)
 976         return -1;
 977     return rv;
 978 }
 979
 980 int SSL_CONF_cmd_value_type(SSL_CONF_CTX *cctx, const char *cmd)
 981 {
 982     if (ssl_conf_cmd_skip_prefix(cctx, &cmd)) {
 983         const ssl_conf_cmd_tbl *runcmd;
 984         runcmd = ssl_conf_cmd_lookup(cctx, cmd);
 985         if (runcmd)
 986             return runcmd->value_type;
 987     }
 988     return SSL_CONF_TYPE_UNKNOWN;
 989 }
 990
 991 SSL_CONF_CTX *SSL_CONF_CTX_new(void)
 992 {
 993     SSL_CONF_CTX *ret = OPENSSL_zalloc(sizeof(*ret));
 994
 995     return ret;
 996 }
 997
 998 int SSL_CONF_CTX_finish(SSL_CONF_CTX *cctx)
 999 {
1000     /* See if any certificates are missing private keys */
1001     size_t i;
1002     CERT *c = NULL;
1003
1004     if (cctx->ctx != NULL) {
1005         c = cctx->ctx->cert;
1006     } else if (cctx->ssl != NULL) {
1007         SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(cctx->ssl);
1008
1009         if (sc != NULL)
1010             c = sc->cert;
1011     }
1012     if (c != NULL && cctx->flags & SSL_CONF_FLAG_REQUIRE_PRIVATE) {
1013         for (i = 0; i < SSL_PKEY_NUM; i++) {
1014             const char *p = cctx->cert_filename[i];
1015             /*
1016              * If missing private key try to load one from certificate file
1017              */
1018             if (p && !c->pkeys[i].privatekey) {
1019                 if (!cmd_PrivateKey(cctx, p))
1020                     return 0;
1021             }
1022         }
1023     }
1024     if (cctx->canames) {
1025         if (cctx->ssl)
1026             SSL_set0_CA_list(cctx->ssl, cctx->canames);
1027         else if (cctx->ctx)
1028             SSL_CTX_set0_CA_list(cctx->ctx, cctx->canames);
1029         else
1030             sk_X509_NAME_pop_free(cctx->canames, X509_NAME_free);
1031         cctx->canames = NULL;
1032     }
1033     return 1;
1034 }
1035
1036 void SSL_CONF_CTX_free(SSL_CONF_CTX *cctx)
1037 {
1038     if (cctx) {
1039         size_t i;
1040         for (i = 0; i < SSL_PKEY_NUM; i++)
1041             OPENSSL_free(cctx->cert_filename[i]);
1042         OPENSSL_free(cctx->prefix);
1043         sk_X509_NAME_pop_free(cctx->canames, X509_NAME_free);
1044         OPENSSL_free(cctx);
1045     }
1046 }
1047
1048 unsigned int SSL_CONF_CTX_set_flags(SSL_CONF_CTX *cctx, unsigned int flags)
1049 {
1050     cctx->flags |= flags;
1051     return cctx->flags;
1052 }
1053
1054 unsigned int SSL_CONF_CTX_clear_flags(SSL_CONF_CTX *cctx, unsigned int flags)
1055 {
1056     cctx->flags &= ~flags;
1057     return cctx->flags;
1058 }
1059
1060 int SSL_CONF_CTX_set1_prefix(SSL_CONF_CTX *cctx, const char *pre)
1061 {
1062     char *tmp = NULL;
1063     if (pre) {
1064         tmp = OPENSSL_strdup(pre);
1065         if (tmp == NULL)
1066             return 0;
1067     }
1068     OPENSSL_free(cctx->prefix);
1069     cctx->prefix = tmp;
1070     if (tmp)
1071         cctx->prefixlen = strlen(tmp);
1072     else
1073         cctx->prefixlen = 0;
1074     return 1;
1075 }
1076
1077 void SSL_CONF_CTX_set_ssl(SSL_CONF_CTX *cctx, SSL *ssl)
1078 {
1079     cctx->ssl = ssl;
1080     cctx->ctx = NULL;
1081     if (ssl != NULL) {
1082         SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(ssl);
1083
1084         if (sc == NULL)
1085             return;
1086         cctx->poptions = &sc->options;
1087         cctx->min_version = &sc->min_proto_version;
1088         cctx->max_version = &sc->max_proto_version;
1089         cctx->pcert_flags = &sc->cert->cert_flags;
1090         cctx->pvfy_flags = &sc->verify_mode;
1091     } else {
1092         cctx->poptions = NULL;
1093         cctx->min_version = NULL;
1094         cctx->max_version = NULL;
1095         cctx->pcert_flags = NULL;
1096         cctx->pvfy_flags = NULL;
1097     }
1098 }
1099
1100 void SSL_CONF_CTX_set_ssl_ctx(SSL_CONF_CTX *cctx, SSL_CTX *ctx)
1101 {
1102     cctx->ctx = ctx;
1103     cctx->ssl = NULL;
1104     if (ctx) {
1105         cctx->poptions = &ctx->options;
1106         cctx->min_version = &ctx->min_proto_version;
1107         cctx->max_version = &ctx->max_proto_version;
1108         cctx->pcert_flags = &ctx->cert->cert_flags;
1109         cctx->pvfy_flags = &ctx->verify_mode;
1110     } else {
1111         cctx->poptions = NULL;
1112         cctx->min_version = NULL;
1113         cctx->max_version = NULL;
1114         cctx->pcert_flags = NULL;
1115         cctx->pvfy_flags = NULL;
1116     }
1117 }