crypto/store/store_result.c

   1 /*
   2  * Copyright 2020 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 "e_os.h"
  11 #include <string.h>
  12
  13 #include <openssl/core.h>
  14 #include <openssl/core_names.h>
  15 #include <openssl/core_object.h>
  16 #include <openssl/err.h>
  17 #include <openssl/pkcs12.h>
  18 #include <openssl/provider.h>
  19 #include <openssl/decoder.h>
  20 #include <openssl/store.h>
  21 #include "internal/provider.h"
  22 #include "internal/passphrase.h"
  23 #include "crypto/evp.h"
  24 #include "crypto/x509.h"
  25 #include "store_local.h"
  26
  27 #ifndef OSSL_OBJECT_PKCS12
  28 /*
  29  * The object abstraction doesn't know PKCS#12, but we want to indicate
  30  * it anyway, so we create our own.  Since the public macros use positive
  31  * numbers, negative ones should be fine.  They must never slip out from
  32  * this translation unit anyway.
  33  */
  34 # define OSSL_OBJECT_PKCS12 -1
  35 #endif
  36
  37 /*
  38  * ossl_store_handle_load_result() is initially written to be a companion
  39  * to our 'file:' scheme provider implementation, but has been made generic
  40  * to serve others as well.
  41  *
  42  * This result handler takes any object abstraction (see provider-object(7))
  43  * and does the best it can with it.  If the object is passed by value (not
  44  * by reference), the contents are currently expected to be DER encoded.
  45  * If an object type is specified, that will be respected; otherwise, this
  46  * handler will guess the contents, by trying the following in order:
  47  *
  48  * 1.  Decode it into an EVP_PKEY, using OSSL_DECODER.
  49  * 2.  Decode it into an X.509 certificate, using d2i_X509 / d2i_X509_AUX.
  50  * 3.  Decode it into an X.509 CRL, using d2i_X509_CRL.
  51  * 4.  Decode it into a PKCS#12 structure, using d2i_PKCS12 (*).
  52  *
  53  * For the 'file:' scheme implementation, this is division of labor.  Since
  54  * the libcrypto <-> provider interface currently doesn't support certain
  55  * structures as first class objects, they must be unpacked from DER here
  56  * rather than in the provider.  The current exception is asymmetric keys,
  57  * which can reside within the provider boundary, most of all thanks to
  58  * OSSL_FUNC_keymgmt_load(), which allows loading the key material by
  59  * reference.
  60  */
  61
  62 struct extracted_param_data_st {
  63     int object_type;
  64     const char *data_type;
  65     const char *utf8_data;
  66     const void *octet_data;
  67     size_t octet_data_size;
  68     const void *ref;
  69     size_t ref_size;
  70     const char *desc;
  71 };
  72
  73 static int try_name(struct extracted_param_data_st *, OSSL_STORE_INFO **);
  74 static int try_key(struct extracted_param_data_st *, OSSL_STORE_INFO **,
  75                    OSSL_STORE_CTX *, const OSSL_PROVIDER *,
  76                    OSSL_LIB_CTX *, const char *);
  77 static int try_cert(struct extracted_param_data_st *, OSSL_STORE_INFO **,
  78                     OSSL_LIB_CTX *, const char *);
  79 static int try_crl(struct extracted_param_data_st *, OSSL_STORE_INFO **,
  80                    OSSL_LIB_CTX *, const char *);
  81 static int try_pkcs12(struct extracted_param_data_st *, OSSL_STORE_INFO **,
  82                       OSSL_STORE_CTX *, OSSL_LIB_CTX *, const char *);
  83
  84 #define SET_ERR_MARK() ERR_set_mark()
  85 #define CLEAR_ERR_MARK()                                                \
  86     do {                                                                \
  87         int err = ERR_peek_last_error();                                \
  88                                                                         \
  89         if (ERR_GET_LIB(err) == ERR_LIB_ASN1                            \
  90             && (ERR_GET_REASON(err) == ASN1_R_UNKNOWN_PUBLIC_KEY_TYPE   \
  91                 || ERR_GET_REASON(err) == ASN1_R_NO_MATCHING_CHOICE_TYPE \
  92                 || ERR_GET_REASON(err) == ERR_R_NESTED_ASN1_ERROR))     \
  93             ERR_pop_to_mark();                                          \
  94         else                                                            \
  95             ERR_clear_last_mark();                                      \
  96     } while(0)
  97 #define RESET_ERR_MARK()                                                \
  98     do {                                                                \
  99         CLEAR_ERR_MARK();                                               \
 100         SET_ERR_MARK();                                                 \
 101     } while(0)
 102
 103 int ossl_store_handle_load_result(const OSSL_PARAM params[], void *arg)
 104 {
 105     struct ossl_load_result_data_st *cbdata = arg;
 106     OSSL_STORE_INFO **v = &cbdata->v;
 107     OSSL_STORE_CTX *ctx = cbdata->ctx;
 108     const OSSL_PROVIDER *provider =
 109         OSSL_STORE_LOADER_provider(ctx->fetched_loader);
 110     OSSL_LIB_CTX *libctx = ossl_provider_libctx(provider);
 111     const char *propq = ctx->properties;
 112     const OSSL_PARAM *p;
 113     struct extracted_param_data_st helper_data;
 114
 115     memset(&helper_data, 0, sizeof(helper_data));
 116     helper_data.object_type = OSSL_OBJECT_UNKNOWN;
 117
 118     if ((p = OSSL_PARAM_locate_const(params, OSSL_OBJECT_PARAM_TYPE)) != NULL
 119         && !OSSL_PARAM_get_int(p, &helper_data.object_type))
 120         return 0;
 121     p = OSSL_PARAM_locate_const(params, OSSL_OBJECT_PARAM_DATA_TYPE);
 122     if (p != NULL
 123         && !OSSL_PARAM_get_utf8_string_ptr(p, &helper_data.data_type))
 124         return 0;
 125     p = OSSL_PARAM_locate_const(params, OSSL_OBJECT_PARAM_DATA);
 126     if (p != NULL
 127         && !OSSL_PARAM_get_octet_string_ptr(p, &helper_data.octet_data,
 128                                             &helper_data.octet_data_size)
 129         && !OSSL_PARAM_get_utf8_string_ptr(p, &helper_data.utf8_data))
 130         return 0;
 131     p = OSSL_PARAM_locate_const(params, OSSL_OBJECT_PARAM_REFERENCE);
 132     if (p != NULL && !OSSL_PARAM_get_octet_string_ptr(p, &helper_data.ref,
 133                                                       &helper_data.ref_size))
 134         return 0;
 135     p = OSSL_PARAM_locate_const(params, OSSL_OBJECT_PARAM_DESC);
 136     if (p != NULL && !OSSL_PARAM_get_utf8_string_ptr(p, &helper_data.desc))
 137         return 0;
 138
 139     /*
 140      * The helper functions return 0 on actual errors, otherwise 1, even if
 141      * they didn't fill out |*v|.
 142      */
 143     SET_ERR_MARK();
 144     if (!try_name(&helper_data, v))
 145         goto err;
 146     RESET_ERR_MARK();
 147     if (!try_key(&helper_data, v, ctx, provider, libctx, propq))
 148         goto err;
 149     RESET_ERR_MARK();
 150     if (!try_cert(&helper_data, v, libctx, propq))
 151         goto err;
 152     RESET_ERR_MARK();
 153     if (!try_crl(&helper_data, v, libctx, propq))
 154         goto err;
 155     RESET_ERR_MARK();
 156     if (!try_pkcs12(&helper_data, v, ctx, libctx, propq))
 157         goto err;
 158     CLEAR_ERR_MARK();
 159
 160     return (*v != NULL);
 161  err:
 162     return 0;
 163 }
 164
 165 static int try_name(struct extracted_param_data_st *data, OSSL_STORE_INFO **v)
 166 {
 167     if (data->object_type == OSSL_OBJECT_NAME) {
 168         char *newname = NULL, *newdesc = NULL;
 169
 170         if (data->utf8_data == NULL)
 171             return 0;
 172         if ((newname = OPENSSL_strdup(data->utf8_data)) == NULL
 173             || (data->desc != NULL
 174                 && (newdesc = OPENSSL_strdup(data->desc)) == NULL)
 175             || (*v = OSSL_STORE_INFO_new_NAME(newname)) == NULL) {
 176             OPENSSL_free(newname);
 177             OPENSSL_free(newdesc);
 178             return 0;
 179         }
 180         OSSL_STORE_INFO_set0_NAME_description(*v, newdesc);
 181     }
 182     return 1;
 183 }
 184
 185 /*
 186  * For the rest of the object types, the provider code may not know what
 187  * type of data it gave us, so we may need to figure that out on our own.
 188  * Therefore, we do check for OSSL_OBJECT_UNKNOWN everywhere below, and
 189  * only return 0 on error if the object type is known.
 190  */
 191
 192 static EVP_PKEY *try_key_ref(struct extracted_param_data_st *data,
 193                              OSSL_STORE_CTX *ctx,
 194                              const OSSL_PROVIDER *provider,
 195                              OSSL_LIB_CTX *libctx, const char *propq)
 196 {
 197     EVP_PKEY *pk = NULL;
 198     EVP_KEYMGMT *keymgmt = NULL;
 199     void *keydata = NULL;
 200
 201     /* If we have an object reference, we must have a data type */
 202     if (data->data_type == NULL)
 203         return 0;
 204
 205     keymgmt = EVP_KEYMGMT_fetch(libctx, data->data_type, propq);
 206     if (keymgmt != NULL) {
 207         /*
 208          * There are two possible cases
 209          *
 210          * 1.  The keymgmt is from the same provider as the loader,
 211          *     so we can use evp_keymgmt_load()
 212          * 2.  The keymgmt is from another provider, then we must
 213          *     do the export/import dance.
 214          */
 215         if (EVP_KEYMGMT_provider(keymgmt) == provider) {
 216             keydata = evp_keymgmt_load(keymgmt, data->ref, data->ref_size);
 217         } else {
 218             struct evp_keymgmt_util_try_import_data_st import_data;
 219             OSSL_FUNC_store_export_object_fn *export_object =
 220                 ctx->fetched_loader->p_export_object;
 221
 222             import_data.keymgmt = keymgmt;
 223             import_data.keydata = NULL;
 224             import_data.selection = OSSL_KEYMGMT_SELECT_ALL;
 225
 226             if (export_object != NULL) {
 227                 /*
 228                  * No need to check for errors here, the value of
 229                  * |import_data.keydata| is as much an indicator.
 230                  */
 231                 (void)export_object(ctx->loader_ctx,
 232                                     data->ref, data->ref_size,
 233                                     &evp_keymgmt_util_try_import,
 234                                     &import_data);
 235             }
 236
 237             keydata = import_data.keydata;
 238         }
 239     }
 240     if (keydata != NULL)
 241         pk = evp_keymgmt_util_make_pkey(keymgmt, keydata);
 242     EVP_KEYMGMT_free(keymgmt);
 243
 244     return pk;
 245 }
 246
 247 static EVP_PKEY *try_key_value(struct extracted_param_data_st *data,
 248                                OSSL_STORE_CTX *ctx,
 249                                OSSL_PASSPHRASE_CALLBACK *cb, void *cbarg,
 250                                OSSL_LIB_CTX *libctx, const char *propq)
 251 {
 252     EVP_PKEY *pk = NULL;
 253     OSSL_DECODER_CTX *decoderctx = NULL;
 254     const unsigned char *pdata = data->octet_data;
 255     size_t pdatalen = data->octet_data_size;
 256     int selection = 0;
 257
 258     switch (ctx->expected_type) {
 259     case 0:
 260         break;
 261     case OSSL_STORE_INFO_PARAMS:
 262         selection = OSSL_KEYMGMT_SELECT_ALL_PARAMETERS;
 263         break;
 264     case OSSL_STORE_INFO_PUBKEY:
 265         selection =
 266             OSSL_KEYMGMT_SELECT_PUBLIC_KEY
 267             | OSSL_KEYMGMT_SELECT_ALL_PARAMETERS;
 268         break;
 269     case OSSL_STORE_INFO_PKEY:
 270         selection = OSSL_KEYMGMT_SELECT_ALL;
 271         break;
 272     default:
 273         return NULL;
 274     }
 275
 276     decoderctx =
 277         OSSL_DECODER_CTX_new_by_EVP_PKEY(&pk, "DER", NULL, data->data_type,
 278                                          selection, libctx, propq);
 279     (void)OSSL_DECODER_CTX_set_passphrase_cb(decoderctx, cb, cbarg);
 280
 281     /* No error if this couldn't be decoded */
 282     (void)OSSL_DECODER_from_data(decoderctx, &pdata, &pdatalen);
 283
 284     OSSL_DECODER_CTX_free(decoderctx);
 285
 286     return pk;
 287 }
 288
 289 typedef OSSL_STORE_INFO *store_info_new_fn(EVP_PKEY *);
 290
 291 static EVP_PKEY *try_key_value_legacy(struct extracted_param_data_st *data,
 292                                       store_info_new_fn **store_info_new,
 293                                       OSSL_STORE_CTX *ctx,
 294                                       OSSL_PASSPHRASE_CALLBACK *cb, void *cbarg,
 295                                       OSSL_LIB_CTX *libctx, const char *propq)
 296 {
 297     EVP_PKEY *pk = NULL;
 298     const unsigned char *der = data->octet_data, *derp;
 299     long der_len = (long)data->octet_data_size;
 300
 301     SET_ERR_MARK();
 302     /* Try PUBKEY first, that's a real easy target */
 303     if (ctx->expected_type == 0
 304         || ctx->expected_type == OSSL_STORE_INFO_PUBKEY) {
 305         derp = der;
 306         pk = d2i_PUBKEY_ex(NULL, &derp, der_len, libctx, propq);
 307         if (pk != NULL)
 308             *store_info_new = OSSL_STORE_INFO_new_PUBKEY;
 309
 310         RESET_ERR_MARK();
 311     }
 312
 313     /* Try private keys next */
 314     if (pk == NULL
 315         && (ctx->expected_type == 0
 316             || ctx->expected_type == OSSL_STORE_INFO_PKEY)) {
 317         unsigned char *new_der = NULL;
 318         X509_SIG *p8 = NULL;
 319         PKCS8_PRIV_KEY_INFO *p8info = NULL;
 320
 321         /* See if it's an encrypted PKCS#8 and decrypt it */
 322         derp = der;
 323         if ((p8 = d2i_X509_SIG(NULL, &derp, der_len)) != NULL) {
 324             char pbuf[PEM_BUFSIZE];
 325             size_t plen = 0;
 326
 327             if (!cb(pbuf, sizeof(pbuf), &plen, NULL, cbarg)) {
 328                 ERR_raise(ERR_LIB_OSSL_STORE, OSSL_STORE_R_BAD_PASSWORD_READ);
 329             } else {
 330                 const X509_ALGOR *alg = NULL;
 331                 const ASN1_OCTET_STRING *oct = NULL;
 332                 int len = 0;
 333
 334                 X509_SIG_get0(p8, &alg, &oct);
 335
 336                 /*
 337                  * No need to check the returned value, |new_der|
 338                  * will be NULL on error anyway.
 339                  */
 340                 PKCS12_pbe_crypt(alg, pbuf, plen,
 341                                  oct->data, oct->length,
 342                                  &new_der, &len, 0);
 343                 der_len = len;
 344                 der = new_der;
 345             }
 346             X509_SIG_free(p8);
 347         }
 348         RESET_ERR_MARK();
 349
 350         /*
 351          * If the encrypted PKCS#8 couldn't be decrypted,
 352          * |der| is NULL
 353          */
 354         if (der != NULL) {
 355             /* Try to unpack an unencrypted PKCS#8, that's easy */
 356             derp = der;
 357             p8info = d2i_PKCS8_PRIV_KEY_INFO(NULL, &derp, der_len);
 358             RESET_ERR_MARK();
 359             if (p8info != NULL) {
 360                 pk = EVP_PKCS82PKEY_ex(p8info, libctx, propq);
 361                 PKCS8_PRIV_KEY_INFO_free(p8info);
 362             }
 363         }
 364
 365         if (pk != NULL)
 366             *store_info_new = OSSL_STORE_INFO_new_PKEY;
 367
 368         OPENSSL_free(new_der);
 369     }
 370     CLEAR_ERR_MARK();
 371
 372     return pk;
 373 }
 374
 375 static int try_key(struct extracted_param_data_st *data, OSSL_STORE_INFO **v,
 376                    OSSL_STORE_CTX *ctx, const OSSL_PROVIDER *provider,
 377                    OSSL_LIB_CTX *libctx, const char *propq)
 378 {
 379     store_info_new_fn *store_info_new = NULL;
 380
 381     if (data->object_type == OSSL_OBJECT_UNKNOWN
 382         || data->object_type == OSSL_OBJECT_PKEY) {
 383         EVP_PKEY *pk = NULL;
 384
 385         /* Prefer key by reference than key by value */
 386         if (data->object_type == OSSL_OBJECT_PKEY && data->ref != NULL) {
 387             pk = try_key_ref(data, ctx, provider, libctx, propq);
 388
 389             /*
 390              * If for some reason we couldn't get a key, it's an error.
 391              * It indicates that while decoders could make a key reference,
 392              * the keymgmt somehow couldn't handle it, or doesn't have a
 393              * OSSL_FUNC_keymgmt_load function.
 394              */
 395             if (pk == NULL)
 396                 return 0;
 397         } else if (data->octet_data != NULL) {
 398             OSSL_PASSPHRASE_CALLBACK *cb = ossl_pw_passphrase_callback_dec;
 399             void *cbarg = &ctx->pwdata;
 400
 401             pk = try_key_value(data, ctx, cb, cbarg, libctx, propq);
 402
 403             /*
 404              * Desperate last maneuver, in case the decoders don't support
 405              * the data we have, then we try on our own to at least get a
 406              * legacy key.
 407              * This is the same as der2key_decode() does, but in a limited
 408              * way and within the walls of libcrypto.
 409              *
 410              * TODO Remove this when #legacy keys are gone
 411              */
 412             if (pk == NULL)
 413                 pk = try_key_value_legacy(data, &store_info_new, ctx,
 414                                           cb, cbarg, libctx, propq);
 415         }
 416
 417         if (pk != NULL) {
 418             data->object_type = OSSL_OBJECT_PKEY;
 419
 420             if (store_info_new == NULL) {
 421                 /*
 422                  * We determined the object type for OSSL_STORE_INFO, which
 423                  * makes an explicit difference between an EVP_PKEY with just
 424                  * (domain) parameters and an EVP_PKEY with actual key
 425                  * material.
 426                  * The logic is that an EVP_PKEY with actual key material
 427                  * always has the public half.
 428                  */
 429                 if (evp_keymgmt_util_has(pk, OSSL_KEYMGMT_SELECT_PRIVATE_KEY))
 430                     store_info_new = OSSL_STORE_INFO_new_PKEY;
 431                 else if (evp_keymgmt_util_has(pk,
 432                                               OSSL_KEYMGMT_SELECT_PUBLIC_KEY))
 433                     store_info_new = OSSL_STORE_INFO_new_PUBKEY;
 434                 else
 435                     store_info_new = OSSL_STORE_INFO_new_PARAMS;
 436             }
 437             *v = store_info_new(pk);
 438         }
 439
 440         if (*v == NULL)
 441             EVP_PKEY_free(pk);
 442     }
 443
 444     return 1;
 445 }
 446
 447 static int try_cert(struct extracted_param_data_st *data, OSSL_STORE_INFO **v,
 448                     OSSL_LIB_CTX *libctx, const char *propq)
 449 {
 450     if (data->object_type == OSSL_OBJECT_UNKNOWN
 451         || data->object_type == OSSL_OBJECT_CERT) {
 452         X509 *cert;
 453
 454         /*
 455          * In most cases, we can try to interpret the serialized
 456          * data as a trusted cert (X509 + X509_AUX) and fall back
 457          * to reading it as a normal cert (just X509), but if
 458          * |data_type| (the PEM name) specifically declares it as a
 459          * trusted cert, then no fallback should be engaged.
 460          * |ignore_trusted| tells if the fallback can be used (1)
 461          * or not (0).
 462          */
 463         int ignore_trusted = 1;
 464
 465         /* If we have a data type, it should be a PEM name */
 466         if (data->data_type != NULL
 467             && (strcasecmp(data->data_type, PEM_STRING_X509_TRUSTED) == 0))
 468             ignore_trusted = 0;
 469
 470         cert = d2i_X509_AUX(NULL, (const unsigned char **)&data->octet_data,
 471                             data->octet_data_size);
 472         if (cert == NULL && ignore_trusted)
 473             cert = d2i_X509(NULL, (const unsigned char **)&data->octet_data,
 474                             data->octet_data_size);
 475
 476         if (cert != NULL)
 477             /* We determined the object type */
 478             data->object_type = OSSL_OBJECT_CERT;
 479
 480         if (cert != NULL && !x509_set0_libctx(cert, libctx, propq)) {
 481             X509_free(cert);
 482             cert = NULL;
 483         }
 484
 485         if (cert != NULL)
 486             *v = OSSL_STORE_INFO_new_CERT(cert);
 487         if (*v == NULL)
 488             X509_free(cert);
 489     }
 490
 491     return 1;
 492 }
 493
 494 static int try_crl(struct extracted_param_data_st *data, OSSL_STORE_INFO **v,
 495                    OSSL_LIB_CTX *libctx, const char *propq)
 496 {
 497     if (data->object_type == OSSL_OBJECT_UNKNOWN
 498         || data->object_type == OSSL_OBJECT_CRL) {
 499         X509_CRL *crl;
 500
 501         crl = d2i_X509_CRL(NULL, (const unsigned char **)&data->octet_data,
 502                            data->octet_data_size);
 503         if (crl != NULL)
 504             /* We determined the object type */
 505             data->object_type = OSSL_OBJECT_CRL;
 506
 507         if (crl != NULL && !x509_crl_set0_libctx(crl, libctx, propq)) {
 508             X509_CRL_free(crl);
 509             crl = NULL;
 510         }
 511
 512         if (crl != NULL)
 513             *v = OSSL_STORE_INFO_new_CRL(crl);
 514         if (*v == NULL)
 515             X509_CRL_free(crl);
 516     }
 517
 518     return 1;
 519 }
 520
 521 static int try_pkcs12(struct extracted_param_data_st *data, OSSL_STORE_INFO **v,
 522                       OSSL_STORE_CTX *ctx,
 523                       OSSL_LIB_CTX *libctx, const char *propq)
 524 {
 525     /* There is no specific object type for PKCS12 */
 526     if (data->object_type == OSSL_OBJECT_UNKNOWN) {
 527         /* Initial parsing */
 528         PKCS12 *p12;
 529
 530         if ((p12 = d2i_PKCS12(NULL, (const unsigned char **)&data->octet_data,
 531                               data->octet_data_size)) != NULL) {
 532             char *pass = NULL;
 533             char tpass[PEM_BUFSIZE];
 534             size_t tpass_len;
 535             EVP_PKEY *pkey = NULL;
 536             X509 *cert = NULL;
 537             STACK_OF(X509) *chain = NULL;
 538
 539             data->object_type = OSSL_OBJECT_PKCS12;
 540
 541             if (PKCS12_verify_mac(p12, "", 0)
 542                 || PKCS12_verify_mac(p12, NULL, 0)) {
 543                 pass = "";
 544             } else {
 545                 static char prompt_info[] = "PKCS12 import pass phrase";
 546                 OSSL_PARAM pw_params[] = {
 547                     OSSL_PARAM_utf8_string(OSSL_PASSPHRASE_PARAM_INFO,
 548                                            prompt_info,
 549                                            sizeof(prompt_info) - 1),
 550                     OSSL_PARAM_END
 551                 };
 552
 553                 if (!ossl_pw_get_passphrase(tpass, sizeof(tpass), &tpass_len,
 554                                             pw_params, 0, &ctx->pwdata)) {
 555                     ERR_raise(ERR_LIB_OSSL_STORE,
 556                               OSSL_STORE_R_PASSPHRASE_CALLBACK_ERROR);
 557                     goto p12_end;
 558                 }
 559                 pass = tpass;
 560                 if (!PKCS12_verify_mac(p12, pass, strlen(pass))) {
 561                     ERR_raise(ERR_LIB_OSSL_STORE,
 562                               OSSL_STORE_R_ERROR_VERIFYING_PKCS12_MAC);
 563                     goto p12_end;
 564                 }
 565             }
 566
 567             if (PKCS12_parse(p12, pass, &pkey, &cert, &chain)) {
 568                 STACK_OF(OSSL_STORE_INFO) *infos = NULL;
 569                 OSSL_STORE_INFO *osi_pkey = NULL;
 570                 OSSL_STORE_INFO *osi_cert = NULL;
 571                 OSSL_STORE_INFO *osi_ca = NULL;
 572                 int ok = 1;
 573
 574                 if ((infos = sk_OSSL_STORE_INFO_new_null()) != NULL) {
 575                     if (pkey != NULL) {
 576                         if ((osi_pkey = OSSL_STORE_INFO_new_PKEY(pkey)) != NULL
 577                             /* clearing pkey here avoids case distinctions */
 578                             && (pkey = NULL) == NULL
 579                             && sk_OSSL_STORE_INFO_push(infos, osi_pkey) != 0)
 580                             osi_pkey = NULL;
 581                         else
 582                             ok = 0;
 583                     }
 584                     if (ok && cert != NULL) {
 585                         if ((osi_cert = OSSL_STORE_INFO_new_CERT(cert)) != NULL
 586                             /* clearing cert here avoids case distinctions */
 587                             && (cert = NULL) == NULL
 588                             && sk_OSSL_STORE_INFO_push(infos, osi_cert) != 0)
 589                             osi_cert = NULL;
 590                         else
 591                             ok = 0;
 592                     }
 593                     while (ok && sk_X509_num(chain) > 0) {
 594                         X509 *ca = sk_X509_value(chain, 0);
 595
 596                         if ((osi_ca = OSSL_STORE_INFO_new_CERT(ca)) != NULL
 597                             && sk_X509_shift(chain) != NULL
 598                             && sk_OSSL_STORE_INFO_push(infos, osi_ca) != 0)
 599                             osi_ca = NULL;
 600                         else
 601                             ok = 0;
 602                     }
 603                 }
 604                 EVP_PKEY_free(pkey);
 605                 X509_free(cert);
 606                 sk_X509_pop_free(chain, X509_free);
 607                 OSSL_STORE_INFO_free(osi_pkey);
 608                 OSSL_STORE_INFO_free(osi_cert);
 609                 OSSL_STORE_INFO_free(osi_ca);
 610                 if (!ok) {
 611                     sk_OSSL_STORE_INFO_pop_free(infos, OSSL_STORE_INFO_free);
 612                     infos = NULL;
 613                 }
 614                 ctx->cached_info = infos;
 615             }
 616         }
 617      p12_end:
 618         PKCS12_free(p12);
 619         *v = sk_OSSL_STORE_INFO_shift(ctx->cached_info);
 620     }
 621
 622     return 1;
 623 }