crypto/store/store_result.c

   1 /*
   2  * Copyright 2020-2023 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 "internal/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 *data_structure;
  66     const char *utf8_data;
  67     const void *octet_data;
  68     size_t octet_data_size;
  69     const void *ref;
  70     size_t ref_size;
  71     const char *desc;
  72 };
  73
  74 static int try_name(struct extracted_param_data_st *, OSSL_STORE_INFO **);
  75 static int try_key(struct extracted_param_data_st *, OSSL_STORE_INFO **,
  76                    OSSL_STORE_CTX *, const OSSL_PROVIDER *,
  77                    OSSL_LIB_CTX *, const char *);
  78 static int try_cert(struct extracted_param_data_st *, OSSL_STORE_INFO **,
  79                     OSSL_LIB_CTX *, const char *);
  80 static int try_crl(struct extracted_param_data_st *, OSSL_STORE_INFO **,
  81                    OSSL_LIB_CTX *, const char *);
  82 static int try_pkcs12(struct extracted_param_data_st *, OSSL_STORE_INFO **,
  83                       OSSL_STORE_CTX *, OSSL_LIB_CTX *, const char *);
  84
  85 int ossl_store_handle_load_result(const OSSL_PARAM params[], void *arg)
  86 {
  87     struct ossl_load_result_data_st *cbdata = arg;
  88     OSSL_STORE_INFO **v = &cbdata->v;
  89     OSSL_STORE_CTX *ctx = cbdata->ctx;
  90     const OSSL_PROVIDER *provider =
  91         OSSL_STORE_LOADER_get0_provider(ctx->fetched_loader);
  92     OSSL_LIB_CTX *libctx = ossl_provider_libctx(provider);
  93     const char *propq = ctx->properties;
  94     const OSSL_PARAM *p;
  95     struct extracted_param_data_st helper_data;
  96
  97     memset(&helper_data, 0, sizeof(helper_data));
  98     helper_data.object_type = OSSL_OBJECT_UNKNOWN;
  99
 100     if ((p = OSSL_PARAM_locate_const(params, OSSL_OBJECT_PARAM_TYPE)) != NULL
 101         && !OSSL_PARAM_get_int(p, &helper_data.object_type))
 102         return 0;
 103     p = OSSL_PARAM_locate_const(params, OSSL_OBJECT_PARAM_DATA_TYPE);
 104     if (p != NULL
 105         && !OSSL_PARAM_get_utf8_string_ptr(p, &helper_data.data_type))
 106         return 0;
 107     p = OSSL_PARAM_locate_const(params, OSSL_OBJECT_PARAM_DATA);
 108     if (p != NULL
 109         && !OSSL_PARAM_get_octet_string_ptr(p, &helper_data.octet_data,
 110                                             &helper_data.octet_data_size)
 111         && !OSSL_PARAM_get_utf8_string_ptr(p, &helper_data.utf8_data))
 112         return 0;
 113     p = OSSL_PARAM_locate_const(params, OSSL_OBJECT_PARAM_DATA_STRUCTURE);
 114     if (p != NULL
 115         && !OSSL_PARAM_get_utf8_string_ptr(p, &helper_data.data_structure))
 116         return 0;
 117     p = OSSL_PARAM_locate_const(params, OSSL_OBJECT_PARAM_REFERENCE);
 118     if (p != NULL && !OSSL_PARAM_get_octet_string_ptr(p, &helper_data.ref,
 119                                                       &helper_data.ref_size))
 120         return 0;
 121     p = OSSL_PARAM_locate_const(params, OSSL_OBJECT_PARAM_DESC);
 122     if (p != NULL && !OSSL_PARAM_get_utf8_string_ptr(p, &helper_data.desc))
 123         return 0;
 124
 125     /*
 126      * The helper functions return 0 on actual errors, otherwise 1, even if
 127      * they didn't fill out |*v|.
 128      */
 129     ERR_set_mark();
 130     if (*v == NULL && !try_name(&helper_data, v))
 131         goto err;
 132     ERR_pop_to_mark();
 133     ERR_set_mark();
 134     if (*v == NULL && !try_key(&helper_data, v, ctx, provider, libctx, propq))
 135         goto err;
 136     ERR_pop_to_mark();
 137     ERR_set_mark();
 138     if (*v == NULL && !try_cert(&helper_data, v, libctx, propq))
 139         goto err;
 140     ERR_pop_to_mark();
 141     ERR_set_mark();
 142     if (*v == NULL && !try_crl(&helper_data, v, libctx, propq))
 143         goto err;
 144     ERR_pop_to_mark();
 145     ERR_set_mark();
 146     if (*v == NULL && !try_pkcs12(&helper_data, v, ctx, libctx, propq))
 147         goto err;
 148     ERR_pop_to_mark();
 149
 150     if (*v == NULL)
 151         ERR_raise(ERR_LIB_OSSL_STORE, ERR_R_UNSUPPORTED);
 152
 153     return (*v != NULL);
 154  err:
 155     ERR_clear_last_mark();
 156     return 0;
 157 }
 158
 159 static int try_name(struct extracted_param_data_st *data, OSSL_STORE_INFO **v)
 160 {
 161     if (data->object_type == OSSL_OBJECT_NAME) {
 162         char *newname = NULL, *newdesc = NULL;
 163
 164         if (data->utf8_data == NULL)
 165             return 0;
 166         if ((newname = OPENSSL_strdup(data->utf8_data)) == NULL
 167             || (data->desc != NULL
 168                 && (newdesc = OPENSSL_strdup(data->desc)) == NULL)
 169             || (*v = OSSL_STORE_INFO_new_NAME(newname)) == NULL) {
 170             OPENSSL_free(newname);
 171             OPENSSL_free(newdesc);
 172             return 0;
 173         }
 174         OSSL_STORE_INFO_set0_NAME_description(*v, newdesc);
 175     }
 176     return 1;
 177 }
 178
 179 /*
 180  * For the rest of the object types, the provider code may not know what
 181  * type of data it gave us, so we may need to figure that out on our own.
 182  * Therefore, we do check for OSSL_OBJECT_UNKNOWN everywhere below, and
 183  * only return 0 on error if the object type is known.
 184  */
 185
 186 static EVP_PKEY *try_key_ref(struct extracted_param_data_st *data,
 187                              OSSL_STORE_CTX *ctx,
 188                              const OSSL_PROVIDER *provider,
 189                              OSSL_LIB_CTX *libctx, const char *propq)
 190 {
 191     EVP_PKEY *pk = NULL;
 192     EVP_KEYMGMT *keymgmt = NULL;
 193     void *keydata = NULL;
 194     int try_fallback = 2;
 195
 196     /* If we have an object reference, we must have a data type */
 197     if (data->data_type == NULL)
 198         return 0;
 199
 200     keymgmt = EVP_KEYMGMT_fetch(libctx, data->data_type, propq);
 201     ERR_set_mark();
 202     while (keymgmt != NULL && keydata == NULL && try_fallback-- > 0) {
 203         /*
 204          * There are two possible cases
 205          *
 206          * 1.  The keymgmt is from the same provider as the loader,
 207          *     so we can use evp_keymgmt_load()
 208          * 2.  The keymgmt is from another provider, then we must
 209          *     do the export/import dance.
 210          */
 211         if (EVP_KEYMGMT_get0_provider(keymgmt) == provider) {
 212             /* no point trying fallback here */
 213             try_fallback = 0;
 214             keydata = evp_keymgmt_load(keymgmt, data->ref, data->ref_size);
 215         } else {
 216             struct evp_keymgmt_util_try_import_data_st import_data;
 217             OSSL_FUNC_store_export_object_fn *export_object =
 218                 ctx->fetched_loader->p_export_object;
 219
 220             import_data.keymgmt = keymgmt;
 221             import_data.keydata = NULL;
 222             import_data.selection = OSSL_KEYMGMT_SELECT_ALL;
 223
 224             if (export_object != NULL) {
 225                 /*
 226                  * No need to check for errors here, the value of
 227                  * |import_data.keydata| is as much an indicator.
 228                  */
 229                 (void)export_object(ctx->loader_ctx,
 230                                     data->ref, data->ref_size,
 231                                     &evp_keymgmt_util_try_import,
 232                                     &import_data);
 233             }
 234
 235             keydata = import_data.keydata;
 236         }
 237
 238         if (keydata == NULL && try_fallback > 0) {
 239             EVP_KEYMGMT_free(keymgmt);
 240             keymgmt = evp_keymgmt_fetch_from_prov((OSSL_PROVIDER *)provider,
 241                                                   data->data_type, propq);
 242             if (keymgmt != NULL) {
 243                 ERR_pop_to_mark();
 244                 ERR_set_mark();
 245             }
 246         }
 247     }
 248     if (keydata != NULL) {
 249         ERR_pop_to_mark();
 250         pk = evp_keymgmt_util_make_pkey(keymgmt, keydata);
 251     } else {
 252         ERR_clear_last_mark();
 253     }
 254     EVP_KEYMGMT_free(keymgmt);
 255
 256     return pk;
 257 }
 258
 259 static EVP_PKEY *try_key_value(struct extracted_param_data_st *data,
 260                                OSSL_STORE_CTX *ctx,
 261                                OSSL_PASSPHRASE_CALLBACK *cb, void *cbarg,
 262                                OSSL_LIB_CTX *libctx, const char *propq)
 263 {
 264     EVP_PKEY *pk = NULL;
 265     OSSL_DECODER_CTX *decoderctx = NULL;
 266     const unsigned char *pdata = data->octet_data;
 267     size_t pdatalen = data->octet_data_size;
 268     int selection = 0;
 269
 270     switch (ctx->expected_type) {
 271     case 0:
 272         break;
 273     case OSSL_STORE_INFO_PARAMS:
 274         selection = OSSL_KEYMGMT_SELECT_ALL_PARAMETERS;
 275         break;
 276     case OSSL_STORE_INFO_PUBKEY:
 277         selection =
 278             OSSL_KEYMGMT_SELECT_PUBLIC_KEY
 279             | OSSL_KEYMGMT_SELECT_ALL_PARAMETERS;
 280         break;
 281     case OSSL_STORE_INFO_PKEY:
 282         selection = OSSL_KEYMGMT_SELECT_ALL;
 283         break;
 284     default:
 285         return NULL;
 286     }
 287
 288     decoderctx =
 289         OSSL_DECODER_CTX_new_for_pkey(&pk, NULL, data->data_structure,
 290                                       data->data_type, selection, libctx,
 291                                       propq);
 292     (void)OSSL_DECODER_CTX_set_passphrase_cb(decoderctx, cb, cbarg);
 293
 294     /* No error if this couldn't be decoded */
 295     (void)OSSL_DECODER_from_data(decoderctx, &pdata, &pdatalen);
 296
 297     OSSL_DECODER_CTX_free(decoderctx);
 298
 299     return pk;
 300 }
 301
 302 typedef OSSL_STORE_INFO *store_info_new_fn(EVP_PKEY *);
 303
 304 static EVP_PKEY *try_key_value_legacy(struct extracted_param_data_st *data,
 305                                       store_info_new_fn **store_info_new,
 306                                       OSSL_STORE_CTX *ctx,
 307                                       OSSL_PASSPHRASE_CALLBACK *cb, void *cbarg,
 308                                       OSSL_LIB_CTX *libctx, const char *propq)
 309 {
 310     EVP_PKEY *pk = NULL;
 311     const unsigned char *der = data->octet_data, *derp;
 312     long der_len = (long)data->octet_data_size;
 313
 314     /* Try PUBKEY first, that's a real easy target */
 315     if (ctx->expected_type == 0
 316         || ctx->expected_type == OSSL_STORE_INFO_PUBKEY) {
 317         derp = der;
 318         pk = d2i_PUBKEY_ex(NULL, &derp, der_len, libctx, propq);
 319
 320         if (pk != NULL)
 321             *store_info_new = OSSL_STORE_INFO_new_PUBKEY;
 322     }
 323
 324     /* Try private keys next */
 325     if (pk == NULL
 326         && (ctx->expected_type == 0
 327             || ctx->expected_type == OSSL_STORE_INFO_PKEY)) {
 328         unsigned char *new_der = NULL;
 329         X509_SIG *p8 = NULL;
 330         PKCS8_PRIV_KEY_INFO *p8info = NULL;
 331
 332         /* See if it's an encrypted PKCS#8 and decrypt it. */
 333         derp = der;
 334         p8 = d2i_X509_SIG(NULL, &derp, der_len);
 335
 336         if (p8 != NULL) {
 337             char pbuf[PEM_BUFSIZE];
 338             size_t plen = 0;
 339
 340             if (!cb(pbuf, sizeof(pbuf), &plen, NULL, cbarg)) {
 341                 ERR_raise(ERR_LIB_OSSL_STORE, OSSL_STORE_R_BAD_PASSWORD_READ);
 342             } else {
 343                 const X509_ALGOR *alg = NULL;
 344                 const ASN1_OCTET_STRING *oct = NULL;
 345                 int len = 0;
 346
 347                 X509_SIG_get0(p8, &alg, &oct);
 348
 349                 /*
 350                  * No need to check the returned value, |new_der|
 351                  * will be NULL on error anyway.
 352                  */
 353                 PKCS12_pbe_crypt(alg, pbuf, plen,
 354                                  oct->data, oct->length,
 355                                  &new_der, &len, 0);
 356                 der_len = len;
 357                 der = new_der;
 358             }
 359             X509_SIG_free(p8);
 360         }
 361
 362         /*
 363          * If the encrypted PKCS#8 couldn't be decrypted,
 364          * |der| is NULL
 365          */
 366         if (der != NULL) {
 367             /* Try to unpack an unencrypted PKCS#8, that's easy */
 368             derp = der;
 369             p8info = d2i_PKCS8_PRIV_KEY_INFO(NULL, &derp, der_len);
 370
 371             if (p8info != NULL) {
 372                 pk = EVP_PKCS82PKEY_ex(p8info, libctx, propq);
 373                 PKCS8_PRIV_KEY_INFO_free(p8info);
 374             }
 375         }
 376
 377         if (pk != NULL)
 378             *store_info_new = OSSL_STORE_INFO_new_PKEY;
 379
 380         OPENSSL_free(new_der);
 381     }
 382
 383     return pk;
 384 }
 385
 386 static int try_key(struct extracted_param_data_st *data, OSSL_STORE_INFO **v,
 387                    OSSL_STORE_CTX *ctx, const OSSL_PROVIDER *provider,
 388                    OSSL_LIB_CTX *libctx, const char *propq)
 389 {
 390     store_info_new_fn *store_info_new = NULL;
 391
 392     if (data->object_type == OSSL_OBJECT_UNKNOWN
 393         || data->object_type == OSSL_OBJECT_PKEY) {
 394         EVP_PKEY *pk = NULL;
 395
 396         /* Prefer key by reference than key by value */
 397         if (data->object_type == OSSL_OBJECT_PKEY && data->ref != NULL) {
 398             pk = try_key_ref(data, ctx, provider, libctx, propq);
 399
 400             /*
 401              * If for some reason we couldn't get a key, it's an error.
 402              * It indicates that while decoders could make a key reference,
 403              * the keymgmt somehow couldn't handle it, or doesn't have a
 404              * OSSL_FUNC_keymgmt_load function.
 405              */
 406             if (pk == NULL)
 407                 return 0;
 408         } else if (data->octet_data != NULL) {
 409             OSSL_PASSPHRASE_CALLBACK *cb = ossl_pw_passphrase_callback_dec;
 410             void *cbarg = &ctx->pwdata;
 411
 412             pk = try_key_value(data, ctx, cb, cbarg, libctx, propq);
 413
 414             /*
 415              * Desperate last maneuver, in case the decoders don't support
 416              * the data we have, then we try on our own to at least get an
 417              * engine provided legacy key.
 418              * This is the same as der2key_decode() does, but in a limited
 419              * way and within the walls of libcrypto.
 420              */
 421             if (pk == NULL)
 422                 pk = try_key_value_legacy(data, &store_info_new, ctx,
 423                                           cb, cbarg, libctx, propq);
 424         }
 425
 426         if (pk != NULL) {
 427             data->object_type = OSSL_OBJECT_PKEY;
 428
 429             if (store_info_new == NULL) {
 430                 /*
 431                  * We determined the object type for OSSL_STORE_INFO, which
 432                  * makes an explicit difference between an EVP_PKEY with just
 433                  * (domain) parameters and an EVP_PKEY with actual key
 434                  * material.
 435                  * The logic is that an EVP_PKEY with actual key material
 436                  * always has the public half.
 437                  */
 438                 if (evp_keymgmt_util_has(pk, OSSL_KEYMGMT_SELECT_PRIVATE_KEY))
 439                     store_info_new = OSSL_STORE_INFO_new_PKEY;
 440                 else if (evp_keymgmt_util_has(pk,
 441                                               OSSL_KEYMGMT_SELECT_PUBLIC_KEY))
 442                     store_info_new = OSSL_STORE_INFO_new_PUBKEY;
 443                 else
 444                     store_info_new = OSSL_STORE_INFO_new_PARAMS;
 445             }
 446             *v = store_info_new(pk);
 447         }
 448
 449         if (*v == NULL)
 450             EVP_PKEY_free(pk);
 451     }
 452
 453     return 1;
 454 }
 455
 456 static int try_cert(struct extracted_param_data_st *data, OSSL_STORE_INFO **v,
 457                     OSSL_LIB_CTX *libctx, const char *propq)
 458 {
 459     if (data->object_type == OSSL_OBJECT_UNKNOWN
 460         || data->object_type == OSSL_OBJECT_CERT) {
 461         /*
 462          * In most cases, we can try to interpret the serialized
 463          * data as a trusted cert (X509 + X509_AUX) and fall back
 464          * to reading it as a normal cert (just X509), but if
 465          * |data_type| (the PEM name) specifically declares it as a
 466          * trusted cert, then no fallback should be engaged.
 467          * |ignore_trusted| tells if the fallback can be used (1)
 468          * or not (0).
 469          */
 470         int ignore_trusted = 1;
 471         X509 *cert = X509_new_ex(libctx, propq);
 472
 473         if (cert == NULL)
 474             return 0;
 475
 476         /* If we have a data type, it should be a PEM name */
 477         if (data->data_type != NULL
 478             && (OPENSSL_strcasecmp(data->data_type, PEM_STRING_X509_TRUSTED) == 0))
 479             ignore_trusted = 0;
 480
 481         if (d2i_X509_AUX(&cert, (const unsigned char **)&data->octet_data,
 482                          data->octet_data_size) == NULL
 483             && (!ignore_trusted
 484                 || d2i_X509(&cert, (const unsigned char **)&data->octet_data,
 485                             data->octet_data_size) == NULL)) {
 486             X509_free(cert);
 487             cert = NULL;
 488         }
 489
 490         if (cert != NULL) {
 491             /* We determined the object type */
 492             data->object_type = OSSL_OBJECT_CERT;
 493             *v = OSSL_STORE_INFO_new_CERT(cert);
 494             if (*v == NULL)
 495                 X509_free(cert);
 496         }
 497     }
 498
 499     return 1;
 500 }
 501
 502 static int try_crl(struct extracted_param_data_st *data, OSSL_STORE_INFO **v,
 503                    OSSL_LIB_CTX *libctx, const char *propq)
 504 {
 505     if (data->object_type == OSSL_OBJECT_UNKNOWN
 506         || data->object_type == OSSL_OBJECT_CRL) {
 507         X509_CRL *crl;
 508
 509         crl = d2i_X509_CRL(NULL, (const unsigned char **)&data->octet_data,
 510                            data->octet_data_size);
 511
 512         if (crl != NULL)
 513             /* We determined the object type */
 514             data->object_type = OSSL_OBJECT_CRL;
 515
 516         if (crl != NULL && !ossl_x509_crl_set0_libctx(crl, libctx, propq)) {
 517             X509_CRL_free(crl);
 518             crl = NULL;
 519         }
 520
 521         if (crl != NULL)
 522             *v = OSSL_STORE_INFO_new_CRL(crl);
 523         if (*v == NULL)
 524             X509_CRL_free(crl);
 525     }
 526
 527     return 1;
 528 }
 529
 530 static int try_pkcs12(struct extracted_param_data_st *data, OSSL_STORE_INFO **v,
 531                       OSSL_STORE_CTX *ctx,
 532                       OSSL_LIB_CTX *libctx, const char *propq)
 533 {
 534     int ok = 1;
 535
 536     /* There is no specific object type for PKCS12 */
 537     if (data->object_type == OSSL_OBJECT_UNKNOWN) {
 538         /* Initial parsing */
 539         PKCS12 *p12;
 540
 541         p12 = d2i_PKCS12(NULL, (const unsigned char **)&data->octet_data,
 542                          data->octet_data_size);
 543
 544         if (p12 != NULL) {
 545             char *pass = NULL;
 546             char tpass[PEM_BUFSIZE + 1];
 547             size_t tpass_len;
 548             EVP_PKEY *pkey = NULL;
 549             X509 *cert = NULL;
 550             STACK_OF(X509) *chain = NULL;
 551
 552             data->object_type = OSSL_OBJECT_PKCS12;
 553
 554             ok = 0;              /* Assume decryption or parse error */
 555
 556             if (!PKCS12_mac_present(p12)
 557                 || PKCS12_verify_mac(p12, NULL, 0)) {
 558                 pass = NULL;
 559             } else if (PKCS12_verify_mac(p12, "", 0)) {
 560                 pass = "";
 561             } else {
 562                 static char prompt_info[] = "PKCS12 import pass phrase";
 563                 OSSL_PARAM pw_params[] = {
 564                     OSSL_PARAM_utf8_string(OSSL_PASSPHRASE_PARAM_INFO,
 565                                            prompt_info,
 566                                            sizeof(prompt_info) - 1),
 567                     OSSL_PARAM_END
 568                 };
 569
 570                 if (!ossl_pw_get_passphrase(tpass, sizeof(tpass) - 1,
 571                                             &tpass_len,
 572                                             pw_params, 0, &ctx->pwdata)) {
 573                     ERR_raise(ERR_LIB_OSSL_STORE,
 574                               OSSL_STORE_R_PASSPHRASE_CALLBACK_ERROR);
 575                     goto p12_end;
 576                 }
 577                 pass = tpass;
 578                 /*
 579                  * ossl_pw_get_passphrase() does not NUL terminate but
 580                  * we must do it for PKCS12_parse()
 581                  */
 582                 pass[tpass_len] = '\0';
 583                 if (!PKCS12_verify_mac(p12, pass, tpass_len)) {
 584                     ERR_raise_data(ERR_LIB_OSSL_STORE,
 585                                    OSSL_STORE_R_ERROR_VERIFYING_PKCS12_MAC,
 586                                    tpass_len == 0 ? "empty password" :
 587                                    "maybe wrong password");
 588                     goto p12_end;
 589                 }
 590             }
 591
 592             if (PKCS12_parse(p12, pass, &pkey, &cert, &chain)) {
 593                 STACK_OF(OSSL_STORE_INFO) *infos = NULL;
 594                 OSSL_STORE_INFO *osi_pkey = NULL;
 595                 OSSL_STORE_INFO *osi_cert = NULL;
 596                 OSSL_STORE_INFO *osi_ca = NULL;
 597
 598                 ok = 1;          /* Parsing went through correctly! */
 599
 600                 if ((infos = sk_OSSL_STORE_INFO_new_null()) != NULL) {
 601                     if (pkey != NULL) {
 602                         if ((osi_pkey = OSSL_STORE_INFO_new_PKEY(pkey)) != NULL
 603                             /* clearing pkey here avoids case distinctions */
 604                             && (pkey = NULL) == NULL
 605                             && sk_OSSL_STORE_INFO_push(infos, osi_pkey) != 0)
 606                             osi_pkey = NULL;
 607                         else
 608                             ok = 0;
 609                     }
 610                     if (ok && cert != NULL) {
 611                         if ((osi_cert = OSSL_STORE_INFO_new_CERT(cert)) != NULL
 612                             /* clearing cert here avoids case distinctions */
 613                             && (cert = NULL) == NULL
 614                             && sk_OSSL_STORE_INFO_push(infos, osi_cert) != 0)
 615                             osi_cert = NULL;
 616                         else
 617                             ok = 0;
 618                     }
 619                     while (ok && sk_X509_num(chain) > 0) {
 620                         X509 *ca = sk_X509_value(chain, 0);
 621
 622                         if ((osi_ca = OSSL_STORE_INFO_new_CERT(ca)) != NULL
 623                             && sk_X509_shift(chain) != NULL
 624                             && sk_OSSL_STORE_INFO_push(infos, osi_ca) != 0)
 625                             osi_ca = NULL;
 626                         else
 627                             ok = 0;
 628                     }
 629                 }
 630                 EVP_PKEY_free(pkey);
 631                 X509_free(cert);
 632                 OSSL_STACK_OF_X509_free(chain);
 633                 OSSL_STORE_INFO_free(osi_pkey);
 634                 OSSL_STORE_INFO_free(osi_cert);
 635                 OSSL_STORE_INFO_free(osi_ca);
 636                 if (!ok) {
 637                     sk_OSSL_STORE_INFO_pop_free(infos, OSSL_STORE_INFO_free);
 638                     infos = NULL;
 639                 }
 640                 ctx->cached_info = infos;
 641             }
 642          p12_end:
 643             OPENSSL_cleanse(tpass, sizeof(tpass));
 644             PKCS12_free(p12);
 645         }
 646         *v = sk_OSSL_STORE_INFO_shift(ctx->cached_info);
 647     }
 648
 649     return ok;
 650 }