crypto/store/loader_file.c

   1 /*
   2  * Copyright 2016-2017 The OpenSSL Project Authors. All Rights Reserved.
   3  *
   4  * Licensed under the OpenSSL license (the "License").  You may not use
   5  * this file except in compliance with the License.  You can obtain a copy
   6  * in the file LICENSE in the source distribution or at
   7  * https://www.openssl.org/source/license.html
   8  */
   9
  10 #include <string.h>
  11 #include <sys/stat.h>
  12 #include <assert.h>
  13
  14 #include <openssl/bio.h>
  15 #include <openssl/dsa.h>         /* For d2i_DSAPrivateKey */
  16 #include <openssl/err.h>
  17 #include <openssl/evp.h>
  18 #include <openssl/pem.h>
  19 #include <openssl/pkcs12.h>      /* For the PKCS8 stuff o.O */
  20 #include <openssl/rsa.h>         /* For d2i_RSAPrivateKey */
  21 #include <openssl/safestack.h>
  22 #include <openssl/store.h>
  23 #include <openssl/ui.h>
  24 #include <openssl/x509.h>        /* For the PKCS8 stuff o.O */
  25 #include "internal/asn1_int.h"
  26 #include "internal/o_dir.h"
  27 #include "internal/cryptlib.h"
  28 #include "internal/store_int.h"
  29 #include "store_locl.h"
  30
  31 #include "e_os.h"
  32
  33 #ifdef _WIN32
  34 # define stat    _stat
  35 #endif
  36
  37 /*-
  38  *  Password prompting
  39  *  ------------------
  40  */
  41
  42 static char *file_get_pass(const UI_METHOD *ui_method, char *pass,
  43                            size_t maxsize, const char *prompt_info, void *data)
  44 {
  45     UI *ui = UI_new();
  46     char *prompt = NULL;
  47
  48     if (ui == NULL) {
  49         OSSL_STOREerr(OSSL_STORE_F_FILE_GET_PASS, ERR_R_MALLOC_FAILURE);
  50         return NULL;
  51     }
  52
  53     if (ui_method != NULL)
  54         UI_set_method(ui, ui_method);
  55     UI_add_user_data(ui, data);
  56
  57     if ((prompt = UI_construct_prompt(ui, "pass phrase",
  58                                       prompt_info)) == NULL) {
  59         OSSL_STOREerr(OSSL_STORE_F_FILE_GET_PASS, ERR_R_MALLOC_FAILURE);
  60         pass = NULL;
  61     } else if (!UI_add_input_string(ui, prompt, UI_INPUT_FLAG_DEFAULT_PWD,
  62                                     pass, 0, maxsize - 1)) {
  63         OSSL_STOREerr(OSSL_STORE_F_FILE_GET_PASS, ERR_R_UI_LIB);
  64         pass = NULL;
  65     } else {
  66         switch (UI_process(ui)) {
  67         case -2:
  68             OSSL_STOREerr(OSSL_STORE_F_FILE_GET_PASS,
  69                           OSSL_STORE_R_UI_PROCESS_INTERRUPTED_OR_CANCELLED);
  70             pass = NULL;
  71             break;
  72         case -1:
  73             OSSL_STOREerr(OSSL_STORE_F_FILE_GET_PASS, ERR_R_UI_LIB);
  74             pass = NULL;
  75             break;
  76         default:
  77             break;
  78         }
  79     }
  80
  81     OPENSSL_free(prompt);
  82     UI_free(ui);
  83     return pass;
  84 }
  85
  86 struct pem_pass_data {
  87     const UI_METHOD *ui_method;
  88     void *data;
  89     const char *prompt_info;
  90 };
  91
  92 static int file_fill_pem_pass_data(struct pem_pass_data *pass_data,
  93                                    const char *prompt_info,
  94                                    const UI_METHOD *ui_method, void *ui_data)
  95 {
  96     if (pass_data == NULL)
  97         return 0;
  98     pass_data->ui_method = ui_method;
  99     pass_data->data = ui_data;
 100     pass_data->prompt_info = prompt_info;
 101     return 1;
 102 }
 103
 104 /* This is used anywhere a pem_password_cb is needed */
 105 static int file_get_pem_pass(char *buf, int num, int w, void *data)
 106 {
 107     struct pem_pass_data *pass_data = data;
 108     char *pass = file_get_pass(pass_data->ui_method, buf, num,
 109                                pass_data->prompt_info, pass_data->data);
 110
 111     return pass == NULL ? 0 : strlen(pass);
 112 }
 113
 114 /*-
 115  *  The file scheme decoders
 116  *  ------------------------
 117  *
 118  *  Each possible data type has its own decoder, which either operates
 119  *  through a given PEM name, or attempts to decode to see if the blob
 120  *  it's given is decodable for its data type.  The assumption is that
 121  *  only the correct data type will match the content.
 122  */
 123
 124 /*-
 125  * The try_decode function is called to check if the blob of data can
 126  * be used by this handler, and if it can, decodes it into a supported
 127  * OpenSSL type and returns a OSSL_STORE_INFO with the decoded data.
 128  * Input:
 129  *    pem_name:     If this blob comes from a PEM file, this holds
 130  *                  the PEM name.  If it comes from another type of
 131  *                  file, this is NULL.
 132  *    pem_header:   If this blob comes from a PEM file, this holds
 133  *                  the PEM headers.  If it comes from another type of
 134  *                  file, this is NULL.
 135  *    blob:         The blob of data to match with what this handler
 136  *                  can use.
 137  *    len:          The length of the blob.
 138  *    handler_ctx:  For a handler marked repeatable, this pointer can
 139  *                  be used to create a context for the handler.  IT IS
 140  *                  THE HANDLER'S RESPONSIBILITY TO CREATE AND DESTROY
 141  *                  THIS CONTEXT APPROPRIATELY, i.e. create on first call
 142  *                  and destroy when about to return NULL.
 143  *    matchcount:   A pointer to an int to count matches for this data.
 144  *                  Usually becomes 0 (no match) or 1 (match!), but may
 145  *                  be higher in the (unlikely) event that the data matches
 146  *                  more than one possibility.  The int will always be
 147  *                  zero when the function is called.
 148  *    ui_method:    Application UI method for getting a password, pin
 149  *                  or any other interactive data.
 150  *    ui_data:      Application data to be passed to ui_method when
 151  *                  it's called.
 152  * Output:
 153  *    a OSSL_STORE_INFO
 154  */
 155 typedef OSSL_STORE_INFO *(*file_try_decode_fn)(const char *pem_name,
 156                                                const char *pem_header,
 157                                                const unsigned char *blob,
 158                                                size_t len, void **handler_ctx,
 159                                                int *matchcount,
 160                                                const UI_METHOD *ui_method,
 161                                                void *ui_data);
 162 /*
 163  * The eof function should return 1 if there's no more data to be found
 164  * with the handler_ctx, otherwise 0.  This is only used when the handler is
 165  * marked repeatable.
 166  */
 167 typedef int (*file_eof_fn)(void *handler_ctx);
 168 /*
 169  * The destroy_ctx function is used to destroy the handler_ctx that was
 170  * intiated by a repeatable try_decode fuction.  This is only used when
 171  * the handler is marked repeatable.
 172  */
 173 typedef void (*file_destroy_ctx_fn)(void **handler_ctx);
 174
 175 typedef struct file_handler_st {
 176     const char *name;
 177     file_try_decode_fn try_decode;
 178     file_eof_fn eof;
 179     file_destroy_ctx_fn destroy_ctx;
 180
 181     /* flags */
 182     int repeatable;
 183 } FILE_HANDLER;
 184
 185 /*
 186  * PKCS#12 decoder.  It operates by decoding all of the blob content,
 187  * extracting all the interesting data from it and storing them internally,
 188  * then serving them one piece at a time.
 189  */
 190 static OSSL_STORE_INFO *try_decode_PKCS12(const char *pem_name,
 191                                           const char *pem_header,
 192                                           const unsigned char *blob,
 193                                           size_t len, void **pctx,
 194                                           int *matchcount,
 195                                           const UI_METHOD *ui_method,
 196                                           void *ui_data)
 197 {
 198     OSSL_STORE_INFO *store_info = NULL;
 199     STACK_OF(OSSL_STORE_INFO) *ctx = *pctx;
 200
 201     if (ctx == NULL) {
 202         /* Initial parsing */
 203         PKCS12 *p12;
 204         int ok = 0;
 205
 206         if (pem_name != NULL)
 207             /* No match, there is no PEM PKCS12 tag */
 208             return NULL;
 209
 210         if ((p12 = d2i_PKCS12(NULL, &blob, len)) != NULL) {
 211             char *pass = NULL;
 212             char tpass[PEM_BUFSIZE];
 213             EVP_PKEY *pkey = NULL;
 214             X509 *cert = NULL;
 215             STACK_OF(X509) *chain = NULL;
 216
 217             *matchcount = 1;
 218
 219             if (PKCS12_verify_mac(p12, "", 0)
 220                 || PKCS12_verify_mac(p12, NULL, 0)) {
 221                 pass = "";
 222             } else {
 223                 if ((pass = file_get_pass(ui_method, tpass, PEM_BUFSIZE,
 224                                           "PKCS12 import password",
 225                                           ui_data)) == NULL) {
 226                     OSSL_STOREerr(OSSL_STORE_F_TRY_DECODE_PKCS12,
 227                                   OSSL_STORE_R_PASSPHRASE_CALLBACK_ERROR);
 228                     goto p12_end;
 229                 }
 230                 if (!PKCS12_verify_mac(p12, pass, strlen(pass))) {
 231                     OSSL_STOREerr(OSSL_STORE_F_TRY_DECODE_PKCS12,
 232                                   OSSL_STORE_R_ERROR_VERIFYING_PKCS12_MAC);
 233                     goto p12_end;
 234                 }
 235             }
 236
 237             if (PKCS12_parse(p12, pass, &pkey, &cert, &chain)) {
 238                 OSSL_STORE_INFO *si_pkey = NULL;
 239                 OSSL_STORE_INFO *si_cert = NULL;
 240                 OSSL_STORE_INFO *si_ca = NULL;
 241
 242                 if ((ctx = sk_OSSL_STORE_INFO_new_null()) != NULL
 243                     && (si_pkey = OSSL_STORE_INFO_new_PKEY(pkey)) != NULL
 244                     && sk_OSSL_STORE_INFO_push(ctx, si_pkey) != 0
 245                     && (si_cert = OSSL_STORE_INFO_new_CERT(cert)) != NULL
 246                     && sk_OSSL_STORE_INFO_push(ctx, si_cert) != 0) {
 247                     ok = 1;
 248                     si_pkey = NULL;
 249                     si_cert = NULL;
 250
 251                     while(sk_X509_num(chain) > 0) {
 252                         X509 *ca = sk_X509_value(chain, 0);
 253
 254                         if ((si_ca = OSSL_STORE_INFO_new_CERT(ca)) == NULL
 255                             || sk_OSSL_STORE_INFO_push(ctx, si_ca) == 0) {
 256                             ok = 0;
 257                             break;
 258                         }
 259                         si_ca = NULL;
 260                         (void)sk_X509_shift(chain);
 261                     }
 262                 }
 263                 if (!ok) {
 264                     OSSL_STORE_INFO_free(si_ca);
 265                     OSSL_STORE_INFO_free(si_cert);
 266                     OSSL_STORE_INFO_free(si_pkey);
 267                     sk_OSSL_STORE_INFO_pop_free(ctx, OSSL_STORE_INFO_free);
 268                     EVP_PKEY_free(pkey);
 269                     X509_free(cert);
 270                     sk_X509_pop_free(chain, X509_free);
 271                     ctx = NULL;
 272                 }
 273                 *pctx = ctx;
 274             }
 275         }
 276      p12_end:
 277         PKCS12_free(p12);
 278         if (!ok)
 279             return NULL;
 280     }
 281
 282     if (ctx != NULL) {
 283         *matchcount = 1;
 284         store_info = sk_OSSL_STORE_INFO_shift(ctx);
 285     }
 286
 287     return store_info;
 288 }
 289
 290 static int eof_PKCS12(void *ctx_)
 291 {
 292     STACK_OF(OSSL_STORE_INFO) *ctx = ctx_;
 293
 294     return ctx == NULL || sk_OSSL_STORE_INFO_num(ctx) == 0;
 295 }
 296
 297 static void destroy_ctx_PKCS12(void **pctx)
 298 {
 299     STACK_OF(OSSL_STORE_INFO) *ctx = *pctx;
 300
 301     sk_OSSL_STORE_INFO_pop_free(ctx, OSSL_STORE_INFO_free);
 302     *pctx = NULL;
 303 }
 304
 305 static FILE_HANDLER PKCS12_handler = {
 306     "PKCS12",
 307     try_decode_PKCS12,
 308     eof_PKCS12,
 309     destroy_ctx_PKCS12,
 310     1                            /* repeatable */
 311 };
 312
 313 /*
 314  * Encrypted PKCS#8 decoder.  It operates by just decrypting the given blob
 315  * into a new blob, which is returned as an EMBEDDED STORE_INFO.  The whole
 316  * decoding process will then start over with the new blob.
 317  */
 318 static OSSL_STORE_INFO *try_decode_PKCS8Encrypted(const char *pem_name,
 319                                                   const char *pem_header,
 320                                                   const unsigned char *blob,
 321                                                   size_t len, void **pctx,
 322                                                   int *matchcount,
 323                                                   const UI_METHOD *ui_method,
 324                                                   void *ui_data)
 325 {
 326     X509_SIG *p8 = NULL;
 327     char kbuf[PEM_BUFSIZE];
 328     char *pass = NULL;
 329     const X509_ALGOR *dalg = NULL;
 330     const ASN1_OCTET_STRING *doct = NULL;
 331     OSSL_STORE_INFO *store_info = NULL;
 332     BUF_MEM *mem = NULL;
 333     unsigned char *new_data = NULL;
 334     int new_data_len;
 335
 336     if (pem_name != NULL) {
 337         if (strcmp(pem_name, PEM_STRING_PKCS8) != 0)
 338             return NULL;
 339         *matchcount = 1;
 340     }
 341
 342     if ((p8 = d2i_X509_SIG(NULL, &blob, len)) == NULL)
 343         return NULL;
 344
 345     *matchcount = 1;
 346
 347     if ((mem = BUF_MEM_new()) == NULL) {
 348         OSSL_STOREerr(OSSL_STORE_F_TRY_DECODE_PKCS8ENCRYPTED,
 349                       ERR_R_MALLOC_FAILURE);
 350         goto nop8;
 351     }
 352
 353     if ((pass = file_get_pass(ui_method, kbuf, PEM_BUFSIZE,
 354                               "PKCS8 decrypt password", ui_data)) == NULL) {
 355         OSSL_STOREerr(OSSL_STORE_F_TRY_DECODE_PKCS8ENCRYPTED,
 356                       OSSL_STORE_R_BAD_PASSWORD_READ);
 357         goto nop8;
 358     }
 359
 360     X509_SIG_get0(p8, &dalg, &doct);
 361     if (!PKCS12_pbe_crypt(dalg, pass, strlen(pass), doct->data, doct->length,
 362                           &new_data, &new_data_len, 0))
 363         goto nop8;
 364
 365     mem->data = (char *)new_data;
 366     mem->max = mem->length = (size_t)new_data_len;
 367     X509_SIG_free(p8);
 368
 369     store_info = ossl_store_info_new_EMBEDDED(PEM_STRING_PKCS8INF, mem);
 370     if (store_info == NULL) {
 371         OSSL_STOREerr(OSSL_STORE_F_TRY_DECODE_PKCS8ENCRYPTED,
 372                       ERR_R_MALLOC_FAILURE);
 373         goto nop8;
 374     }
 375
 376     return store_info;
 377  nop8:
 378     X509_SIG_free(p8);
 379     BUF_MEM_free(mem);
 380     return NULL;
 381 }
 382
 383 static FILE_HANDLER PKCS8Encrypted_handler = {
 384     "PKCS8Encrypted",
 385     try_decode_PKCS8Encrypted
 386 };
 387
 388 /*
 389  * Private key decoder.  Decodes all sorts of private keys, both PKCS#8
 390  * encoded ones and old style PEM ones (with the key type is encoded into
 391  * the PEM name).
 392  */
 393 int pem_check_suffix(const char *pem_str, const char *suffix);
 394 static OSSL_STORE_INFO *try_decode_PrivateKey(const char *pem_name,
 395                                               const char *pem_header,
 396                                               const unsigned char *blob,
 397                                               size_t len, void **pctx,
 398                                               int *matchcount,
 399                                               const UI_METHOD *ui_method,
 400                                               void *ui_data)
 401 {
 402     OSSL_STORE_INFO *store_info = NULL;
 403     EVP_PKEY *pkey = NULL;
 404     const EVP_PKEY_ASN1_METHOD *ameth = NULL;
 405
 406     if (pem_name != NULL) {
 407         if (strcmp(pem_name, PEM_STRING_PKCS8INF) == 0) {
 408             PKCS8_PRIV_KEY_INFO *p8inf =
 409                 d2i_PKCS8_PRIV_KEY_INFO(NULL, &blob, len);
 410
 411             *matchcount = 1;
 412             if (p8inf != NULL)
 413                 pkey = EVP_PKCS82PKEY(p8inf);
 414             PKCS8_PRIV_KEY_INFO_free(p8inf);
 415         } else {
 416             int slen;
 417
 418             if ((slen = pem_check_suffix(pem_name, "PRIVATE KEY")) > 0
 419                 && (ameth = EVP_PKEY_asn1_find_str(NULL, pem_name,
 420                                                    slen)) != NULL) {
 421                 *matchcount = 1;
 422                 pkey = d2i_PrivateKey(ameth->pkey_id, NULL, &blob, len);
 423             }
 424         }
 425     } else {
 426         int i;
 427
 428         for (i = 0; i < EVP_PKEY_asn1_get_count(); i++) {
 429             EVP_PKEY *tmp_pkey = NULL;
 430             const unsigned char *tmp_blob = blob;
 431
 432             ameth = EVP_PKEY_asn1_get0(i);
 433             if (ameth->pkey_flags & ASN1_PKEY_ALIAS)
 434                 continue;
 435
 436             tmp_pkey = d2i_PrivateKey(ameth->pkey_id, NULL, &tmp_blob, len);
 437             if (tmp_pkey != NULL) {
 438                 if (pkey != NULL)
 439                     EVP_PKEY_free(tmp_pkey);
 440                 else
 441                     pkey = tmp_pkey;
 442                 (*matchcount)++;
 443             }
 444         }
 445
 446         if (*matchcount > 1) {
 447             EVP_PKEY_free(pkey);
 448             pkey = NULL;
 449         }
 450     }
 451     if (pkey == NULL)
 452         /* No match */
 453         return NULL;
 454
 455     store_info = OSSL_STORE_INFO_new_PKEY(pkey);
 456     if (store_info == NULL)
 457         EVP_PKEY_free(pkey);
 458
 459     return store_info;
 460 }
 461
 462 static FILE_HANDLER PrivateKey_handler = {
 463     "PrivateKey",
 464     try_decode_PrivateKey
 465 };
 466
 467 /*
 468  * Public key decoder.  Only supports SubjectPublicKeyInfo formated keys.
 469  */
 470 static OSSL_STORE_INFO *try_decode_PUBKEY(const char *pem_name,
 471                                           const char *pem_header,
 472                                           const unsigned char *blob,
 473                                           size_t len, void **pctx,
 474                                           int *matchcount,
 475                                           const UI_METHOD *ui_method,
 476                                           void *ui_data)
 477 {
 478     OSSL_STORE_INFO *store_info = NULL;
 479     EVP_PKEY *pkey = NULL;
 480
 481     if (pem_name != NULL) {
 482         if (strcmp(pem_name, PEM_STRING_PUBLIC) != 0)
 483             /* No match */
 484             return NULL;
 485         *matchcount = 1;
 486     }
 487
 488     if ((pkey = d2i_PUBKEY(NULL, &blob, len)) != NULL) {
 489         *matchcount = 1;
 490         store_info = OSSL_STORE_INFO_new_PKEY(pkey);
 491     }
 492
 493     return store_info;
 494 }
 495
 496 static FILE_HANDLER PUBKEY_handler = {
 497     "PUBKEY",
 498     try_decode_PUBKEY
 499 };
 500
 501 /*
 502  * Key parameter decoder.
 503  */
 504 static OSSL_STORE_INFO *try_decode_params(const char *pem_name,
 505                                           const char *pem_header,
 506                                           const unsigned char *blob,
 507                                           size_t len, void **pctx,
 508                                           int *matchcount,
 509                                           const UI_METHOD *ui_method,
 510                                           void *ui_data)
 511 {
 512     OSSL_STORE_INFO *store_info = NULL;
 513     int slen = 0;
 514     EVP_PKEY *pkey = NULL;
 515     const EVP_PKEY_ASN1_METHOD *ameth = NULL;
 516     int ok = 0;
 517
 518     if (pem_name != NULL) {
 519         if ((slen = pem_check_suffix(pem_name, "PARAMETERS")) == 0)
 520             return NULL;
 521         *matchcount = 1;
 522     }
 523
 524     if (slen > 0) {
 525         if ((pkey = EVP_PKEY_new()) == NULL) {
 526             OSSL_STOREerr(OSSL_STORE_F_TRY_DECODE_PARAMS, ERR_R_EVP_LIB);
 527             return NULL;
 528         }
 529
 530
 531         if (EVP_PKEY_set_type_str(pkey, pem_name, slen)
 532             && (ameth = EVP_PKEY_get0_asn1(pkey)) != NULL
 533             && ameth->param_decode != NULL
 534             && ameth->param_decode(pkey, &blob, len))
 535             ok = 1;
 536     } else {
 537         int i;
 538         EVP_PKEY *tmp_pkey = NULL;
 539
 540         for (i = 0; i < EVP_PKEY_asn1_get_count(); i++) {
 541             const unsigned char *tmp_blob = blob;
 542
 543             if (tmp_pkey == NULL && (tmp_pkey = EVP_PKEY_new()) == NULL) {
 544                 OSSL_STOREerr(OSSL_STORE_F_TRY_DECODE_PARAMS, ERR_R_EVP_LIB);
 545                 break;
 546             }
 547
 548             ameth = EVP_PKEY_asn1_get0(i);
 549             if (ameth->pkey_flags & ASN1_PKEY_ALIAS)
 550                 continue;
 551
 552             if (EVP_PKEY_set_type(tmp_pkey, ameth->pkey_id)
 553                 && (ameth = EVP_PKEY_get0_asn1(tmp_pkey)) != NULL
 554                 && ameth->param_decode != NULL
 555                 && ameth->param_decode(tmp_pkey, &tmp_blob, len)) {
 556                 if (pkey != NULL)
 557                     EVP_PKEY_free(tmp_pkey);
 558                 else
 559                     pkey = tmp_pkey;
 560                 tmp_pkey = NULL;
 561                 (*matchcount)++;
 562             }
 563         }
 564
 565         EVP_PKEY_free(tmp_pkey);
 566         if (*matchcount == 1) {
 567             ok = 1;
 568         }
 569     }
 570
 571     if (ok)
 572         store_info = OSSL_STORE_INFO_new_PARAMS(pkey);
 573     if (store_info == NULL)
 574         EVP_PKEY_free(pkey);
 575
 576     return store_info;
 577 }
 578
 579 static FILE_HANDLER params_handler = {
 580     "params",
 581     try_decode_params
 582 };
 583
 584 /*
 585  * X.509 certificate decoder.
 586  */
 587 static OSSL_STORE_INFO *try_decode_X509Certificate(const char *pem_name,
 588                                                    const char *pem_header,
 589                                                    const unsigned char *blob,
 590                                                    size_t len, void **pctx,
 591                                                    int *matchcount,
 592                                                    const UI_METHOD *ui_method,
 593                                                    void *ui_data)
 594 {
 595     OSSL_STORE_INFO *store_info = NULL;
 596     X509 *cert = NULL;
 597
 598     /*
 599      * In most cases, we can try to interpret the serialized data as a trusted
 600      * cert (X509 + X509_AUX) and fall back to reading it as a normal cert
 601      * (just X509), but if the PEM name specifically declares it as a trusted
 602      * cert, then no fallback should be engaged.  |ignore_trusted| tells if
 603      * the fallback can be used (1) or not (0).
 604      */
 605     int ignore_trusted = 1;
 606
 607     if (pem_name != NULL) {
 608         if (strcmp(pem_name, PEM_STRING_X509_TRUSTED) == 0)
 609             ignore_trusted = 0;
 610         else if (strcmp(pem_name, PEM_STRING_X509_OLD) != 0
 611                  && strcmp(pem_name, PEM_STRING_X509) != 0)
 612             /* No match */
 613             return NULL;
 614         *matchcount = 1;
 615     }
 616
 617     if ((cert = d2i_X509_AUX(NULL, &blob, len)) != NULL
 618         || (ignore_trusted && (cert = d2i_X509(NULL, &blob, len)) != NULL)) {
 619         *matchcount = 1;
 620         store_info = OSSL_STORE_INFO_new_CERT(cert);
 621     }
 622
 623     if (store_info == NULL)
 624         X509_free(cert);
 625
 626     return store_info;
 627 }
 628
 629 static FILE_HANDLER X509Certificate_handler = {
 630     "X509Certificate",
 631     try_decode_X509Certificate
 632 };
 633
 634 /*
 635  * X.509 CRL decoder.
 636  */
 637 static OSSL_STORE_INFO *try_decode_X509CRL(const char *pem_name,
 638                                            const char *pem_header,
 639                                            const unsigned char *blob,
 640                                            size_t len, void **pctx,
 641                                            int *matchcount,
 642                                            const UI_METHOD *ui_method,
 643                                            void *ui_data)
 644 {
 645     OSSL_STORE_INFO *store_info = NULL;
 646     X509_CRL *crl = NULL;
 647
 648     if (pem_name != NULL) {
 649         if (strcmp(pem_name, PEM_STRING_X509_CRL) != 0)
 650             /* No match */
 651             return NULL;
 652         *matchcount = 1;
 653     }
 654
 655     if ((crl = d2i_X509_CRL(NULL, &blob, len)) != NULL) {
 656         *matchcount = 1;
 657         store_info = OSSL_STORE_INFO_new_CRL(crl);
 658     }
 659
 660     if (store_info == NULL)
 661         X509_CRL_free(crl);
 662
 663     return store_info;
 664 }
 665
 666 static FILE_HANDLER X509CRL_handler = {
 667     "X509CRL",
 668     try_decode_X509CRL
 669 };
 670
 671 /*
 672  * To finish it all off, we collect all the handlers.
 673  */
 674 static const FILE_HANDLER *file_handlers[] = {
 675     &PKCS12_handler,
 676     &PKCS8Encrypted_handler,
 677     &X509Certificate_handler,
 678     &X509CRL_handler,
 679     &params_handler,
 680     &PUBKEY_handler,
 681     &PrivateKey_handler,
 682 };
 683
 684
 685 /*-
 686  *  The loader itself
 687  *  -----------------
 688  */
 689
 690 struct ossl_store_loader_ctx_st {
 691     enum {
 692         is_raw = 0,
 693         is_pem,
 694         is_dir
 695     } type;
 696     int errcnt;
 697 #define FILE_FLAG_SECMEM         (1<<0)
 698     unsigned int flags;
 699     union {
 700         struct {                 /* Used with is_raw and is_pem */
 701             BIO *file;
 702
 703             /*
 704              * The following are used when the handler is marked as
 705              * repeatable
 706              */
 707             const FILE_HANDLER *last_handler;
 708             void *last_handler_ctx;
 709         } file;
 710         struct {                 /* Used with is_dir */
 711             OPENSSL_DIR_CTX *ctx;
 712             int end_reached;
 713             char *uri;
 714
 715             /*
 716              * The directory reading utility we have combines opening with
 717              * reading the first name.  To make sure we can detect the end
 718              * at the right time, we read early and cache the name.
 719              */
 720             const char *last_entry;
 721             int last_errno;
 722         } dir;
 723     } _;
 724 };
 725
 726 static void OSSL_STORE_LOADER_CTX_free(OSSL_STORE_LOADER_CTX *ctx)
 727 {
 728     if (ctx->type == is_dir) {
 729         OPENSSL_free(ctx->_.dir.uri);
 730     } else {
 731         if (ctx->_.file.last_handler != NULL) {
 732             ctx->_.file.last_handler->destroy_ctx(&ctx->_.file.last_handler_ctx);
 733             ctx->_.file.last_handler_ctx = NULL;
 734             ctx->_.file.last_handler = NULL;
 735         }
 736     }
 737     OPENSSL_free(ctx);
 738 }
 739
 740 static OSSL_STORE_LOADER_CTX *file_open(const OSSL_STORE_LOADER *loader,
 741                                         const char *uri,
 742                                         const UI_METHOD *ui_method,
 743                                         void *ui_data)
 744 {
 745     OSSL_STORE_LOADER_CTX *ctx = NULL;
 746     struct stat st;
 747     const char *paths[2], *path;
 748     size_t paths_n = 0, i;
 749
 750     /*
 751      * First step, just take the URI as is.
 752      */
 753     paths[paths_n++] = uri;
 754
 755     /*
 756      * Second step, if the URI appears to start with the 'file' scheme,
 757      * extract the path and make that the second path to check.
 758      * There's a special case if the URI also contains an authority, then
 759      * the full URI shouldn't be used as a path anywhere.
 760      */
 761     if (strncasecmp(uri, "file:", 5) == 0) {
 762         const char *p = &uri[5];
 763
 764         if (strncmp(&uri[5], "//", 2) == 0) {
 765             paths_n--;           /* Invalidate using the full URI */
 766             if (strncasecmp(&uri[7], "localhost/", 10) == 0) {
 767                 p = &uri[16];
 768             } else if (uri[7] == '/') {
 769                 p = &uri[7];
 770             } else {
 771                 OSSL_STOREerr(OSSL_STORE_F_FILE_OPEN,
 772                               OSSL_STORE_R_URI_AUTHORITY_UNSUPPORTED);
 773                 return NULL;
 774             }
 775         }
 776
 777         /*
 778          * If the scheme "file" was an explicit part of the URI, the path must
 779          * be absolute.  So says RFC 8089
 780          */
 781         if (p[0] != '/') {
 782             OSSL_STOREerr(OSSL_STORE_F_FILE_OPEN,
 783                           OSSL_STORE_R_PATH_MUST_BE_ABSOLUTE);
 784             return NULL;
 785         }
 786
 787 #ifdef _WIN32
 788         /* Windows file: URIs with a drive letter start with a / */
 789         if (p[0] == '/' && p[2] == ':' && p[3] == '/')
 790             p++;
 791 #endif
 792         paths[paths_n++] = p;
 793     }
 794
 795
 796     for (i = 0, path = NULL; path == NULL && i < paths_n; i++) {
 797         if (stat(paths[i], &st) < 0) {
 798             SYSerr(SYS_F_STAT, errno);
 799             ERR_add_error_data(1, paths[i]);
 800         } else {
 801             path = paths[i];
 802         }
 803     }
 804     if (path == NULL) {
 805         return NULL;
 806     }
 807
 808     /* Successfully found a working path, clear possible collected errors */
 809     ERR_clear_error();
 810
 811     ctx = OPENSSL_zalloc(sizeof(*ctx));
 812     if (ctx == NULL) {
 813         OSSL_STOREerr(OSSL_STORE_F_FILE_OPEN, ERR_R_MALLOC_FAILURE);
 814         return NULL;
 815     }
 816
 817     if ((st.st_mode & S_IFDIR) == S_IFDIR) {
 818         /*
 819          * Try to copy everything, even if we know that some of them must be
 820          * NULL for the moment.  This prevents errors in the future, when more
 821          * components may be used.
 822          */
 823         ctx->_.dir.uri = OPENSSL_strdup(uri);
 824         ctx->type = is_dir;
 825
 826         if (ctx->_.dir.uri == NULL)
 827             goto err;
 828
 829         ctx->_.dir.last_entry = OPENSSL_DIR_read(&ctx->_.dir.ctx, path);
 830         ctx->_.dir.last_errno = errno;
 831         if (ctx->_.dir.last_entry == NULL) {
 832             if (ctx->_.dir.last_errno != 0) {
 833                 char errbuf[256];
 834                 errno = ctx->_.dir.last_errno;
 835                 openssl_strerror_r(errno, errbuf, sizeof(errbuf));
 836                 OSSL_STOREerr(OSSL_STORE_F_FILE_OPEN, ERR_R_SYS_LIB);
 837                 ERR_add_error_data(1, errbuf);
 838                 goto err;
 839             }
 840             ctx->_.dir.end_reached = 1;
 841         }
 842     } else {
 843         BIO *buff = NULL;
 844         char peekbuf[4096];
 845
 846         if ((buff = BIO_new(BIO_f_buffer())) == NULL
 847             || (ctx->_.file.file = BIO_new_file(path, "rb")) == NULL) {
 848             BIO_free_all(buff);
 849             goto err;
 850         }
 851
 852         ctx->_.file.file = BIO_push(buff, ctx->_.file.file);
 853         if (BIO_buffer_peek(ctx->_.file.file, peekbuf, sizeof(peekbuf)-1) > 0) {
 854             peekbuf[sizeof(peekbuf)-1] = '\0';
 855             if (strstr(peekbuf, "-----BEGIN ") != NULL)
 856                 ctx->type = is_pem;
 857         }
 858     }
 859
 860     return ctx;
 861  err:
 862     OSSL_STORE_LOADER_CTX_free(ctx);
 863     return NULL;
 864 }
 865
 866 static int file_ctrl(OSSL_STORE_LOADER_CTX *ctx, int cmd, va_list args)
 867 {
 868     int ret = 1;
 869
 870     switch (cmd) {
 871     case OSSL_STORE_C_USE_SECMEM:
 872         {
 873             int on = *(va_arg(args, int *));
 874
 875             switch (on) {
 876             case 0:
 877                 ctx->flags &= ~FILE_FLAG_SECMEM;
 878                 break;
 879             case 1:
 880                 ctx->flags |= FILE_FLAG_SECMEM;
 881                 break;
 882             default:
 883                 OSSL_STOREerr(OSSL_STORE_F_FILE_CTRL,
 884                               ERR_R_PASSED_INVALID_ARGUMENT);
 885                 ret = 0;
 886                 break;
 887             }
 888         }
 889         break;
 890     default:
 891         break;
 892     }
 893
 894     return ret;
 895 }
 896
 897 /* Internal function to decode an already opened PEM file */
 898 OSSL_STORE_LOADER_CTX *ossl_store_file_attach_pem_bio_int(BIO *bp)
 899 {
 900     OSSL_STORE_LOADER_CTX *ctx = OPENSSL_zalloc(sizeof(*ctx));
 901
 902     if (ctx == NULL) {
 903         OSSL_STOREerr(OSSL_STORE_F_OSSL_STORE_FILE_ATTACH_PEM_BIO_INT,
 904                       ERR_R_MALLOC_FAILURE);
 905         return NULL;
 906     }
 907
 908     ctx->_.file.file = bp;
 909     ctx->type = is_pem;
 910
 911     return ctx;
 912 }
 913
 914 static OSSL_STORE_INFO *file_load_try_decode(OSSL_STORE_LOADER_CTX *ctx,
 915                                              const char *pem_name,
 916                                              const char *pem_header,
 917                                              unsigned char *data, size_t len,
 918                                              const UI_METHOD *ui_method,
 919                                              void *ui_data, int *matchcount)
 920 {
 921     OSSL_STORE_INFO *result = NULL;
 922     BUF_MEM *new_mem = NULL;
 923     char *new_pem_name = NULL;
 924     int t = 0;
 925
 926  again:
 927     {
 928         size_t i = 0;
 929         void *handler_ctx = NULL;
 930         const FILE_HANDLER **matching_handlers =
 931             OPENSSL_zalloc(sizeof(*matching_handlers)
 932                            * OSSL_NELEM(file_handlers));
 933
 934         if (matching_handlers == NULL) {
 935             OSSL_STOREerr(OSSL_STORE_F_FILE_LOAD_TRY_DECODE,
 936                           ERR_R_MALLOC_FAILURE);
 937             goto err;
 938         }
 939
 940         *matchcount = 0;
 941         for (i = 0; i < OSSL_NELEM(file_handlers); i++) {
 942             const FILE_HANDLER *handler = file_handlers[i];
 943             int try_matchcount = 0;
 944             void *tmp_handler_ctx = NULL;
 945             OSSL_STORE_INFO *tmp_result =
 946                 handler->try_decode(pem_name, pem_header, data, len,
 947                                     &tmp_handler_ctx, &try_matchcount,
 948                                     ui_method, ui_data);
 949
 950             if (try_matchcount > 0) {
 951                 if (matching_handlers)
 952                     matching_handlers[*matchcount] = handler;
 953
 954                 if (handler_ctx)
 955                     handler->destroy_ctx(&handler_ctx);
 956                 handler_ctx = tmp_handler_ctx;
 957
 958                 if ((*matchcount += try_matchcount) > 1) {
 959                     /* more than one match => ambiguous, kill any result */
 960                     OSSL_STORE_INFO_free(result);
 961                     OSSL_STORE_INFO_free(tmp_result);
 962                     if (handler->destroy_ctx != NULL)
 963                         handler->destroy_ctx(&handler_ctx);
 964                     handler_ctx = NULL;
 965                     tmp_result = NULL;
 966                     result = NULL;
 967                 }
 968                 if (result == NULL)
 969                     result = tmp_result;
 970             }
 971         }
 972
 973         if (*matchcount == 1 && matching_handlers[0]->repeatable) {
 974             ctx->_.file.last_handler = matching_handlers[0];
 975             ctx->_.file.last_handler_ctx = handler_ctx;
 976         }
 977
 978         OPENSSL_free(matching_handlers);
 979     }
 980
 981  err:
 982     OPENSSL_free(new_pem_name);
 983     BUF_MEM_free(new_mem);
 984
 985     if (result != NULL
 986         && (t = OSSL_STORE_INFO_get_type(result)) == OSSL_STORE_INFO_EMBEDDED) {
 987         pem_name = new_pem_name =
 988             ossl_store_info_get0_EMBEDDED_pem_name(result);
 989         new_mem = ossl_store_info_get0_EMBEDDED_buffer(result);
 990         data = (unsigned char *)new_mem->data;
 991         len = new_mem->length;
 992         OPENSSL_free(result);
 993         result = NULL;
 994         goto again;
 995     }
 996
 997     if (result != NULL)
 998         ERR_clear_error();
 999
1000     return result;
1001 }
1002
1003 static OSSL_STORE_INFO *file_load_try_repeat(OSSL_STORE_LOADER_CTX *ctx,
1004                                              const UI_METHOD *ui_method,
1005                                              void *ui_data)
1006 {
1007     OSSL_STORE_INFO *result = NULL;
1008     int try_matchcount = 0;
1009
1010     if (ctx->_.file.last_handler != NULL) {
1011         result =
1012             ctx->_.file.last_handler->try_decode(NULL, NULL, NULL, 0,
1013                                                  &ctx->_.file.last_handler_ctx,
1014                                                  &try_matchcount,
1015                                                  ui_method, ui_data);
1016
1017         if (result == NULL) {
1018             ctx->_.file.last_handler->destroy_ctx(&ctx->_.file.last_handler_ctx);
1019             ctx->_.file.last_handler_ctx = NULL;
1020             ctx->_.file.last_handler = NULL;
1021         }
1022     }
1023     return result;
1024 }
1025
1026 static void pem_free_flag(void *pem_data, int secure)
1027 {
1028     if (secure)
1029         OPENSSL_secure_free(pem_data);
1030     else
1031         OPENSSL_free(pem_data);
1032 }
1033 static int file_read_pem(BIO *bp, char **pem_name, char **pem_header,
1034                          unsigned char **data, long *len,
1035                          const UI_METHOD *ui_method,
1036                          void *ui_data, int secure)
1037 {
1038     int i = secure
1039         ? PEM_read_bio_ex(bp, pem_name, pem_header, data, len,
1040                           PEM_FLAG_SECURE | PEM_FLAG_EAY_COMPATIBLE)
1041         : PEM_read_bio(bp, pem_name, pem_header, data, len);
1042
1043     if (i <= 0)
1044         return 0;
1045
1046     /*
1047      * 10 is the number of characters in "Proc-Type:", which
1048      * PEM_get_EVP_CIPHER_INFO() requires to be present.
1049      * If the PEM header has less characters than that, it's
1050      * not worth spending cycles on it.
1051      */
1052     if (strlen(*pem_header) > 10) {
1053         EVP_CIPHER_INFO cipher;
1054         struct pem_pass_data pass_data;
1055
1056         if (!PEM_get_EVP_CIPHER_INFO(*pem_header, &cipher)
1057             || !file_fill_pem_pass_data(&pass_data, "PEM", ui_method, ui_data)
1058             || !PEM_do_header(&cipher, *data, len, file_get_pem_pass,
1059                               &pass_data)) {
1060             return 0;
1061         }
1062     }
1063     return 1;
1064 }
1065
1066 static int file_read_asn1(BIO *bp, unsigned char **data, long *len)
1067 {
1068     BUF_MEM *mem = NULL;
1069
1070     if (asn1_d2i_read_bio(bp, &mem) < 0)
1071         return 0;
1072
1073     *data = (unsigned char *)mem->data;
1074     *len = (long)mem->length;
1075     OPENSSL_free(mem);
1076
1077     return 1;
1078 }
1079
1080 static int ends_with_dirsep(const char *uri)
1081 {
1082     if (*uri != '\0')
1083         uri += strlen(uri) - 1;
1084 #if defined __VMS
1085     if (*uri == ']' || *uri == '>' || *uri == ':')
1086         return 1;
1087 #elif defined _WIN32
1088     if (*uri == '\\')
1089         return 1;
1090 #endif
1091     return *uri == '/';
1092 }
1093
1094 static int file_name_to_uri(OSSL_STORE_LOADER_CTX *ctx, const char *name,
1095                             char **data)
1096 {
1097     assert(name != NULL);
1098     assert(data != NULL);
1099     {
1100         const char *pathsep = ends_with_dirsep(ctx->_.dir.uri) ? "" : "/";
1101         long calculated_length = strlen(ctx->_.dir.uri) + strlen(pathsep)
1102             + strlen(name) + 1 /* \0 */;
1103
1104         *data = OPENSSL_zalloc(calculated_length);
1105         if (*data == NULL) {
1106             OSSL_STOREerr(OSSL_STORE_F_FILE_NAME_TO_URI, ERR_R_MALLOC_FAILURE);
1107             return 0;
1108         }
1109
1110         OPENSSL_strlcat(*data, ctx->_.dir.uri, calculated_length);
1111         OPENSSL_strlcat(*data, pathsep, calculated_length);
1112         OPENSSL_strlcat(*data, name, calculated_length);
1113     }
1114     return 1;
1115 }
1116
1117 static int file_eof(OSSL_STORE_LOADER_CTX *ctx);
1118 static int file_error(OSSL_STORE_LOADER_CTX *ctx);
1119 static OSSL_STORE_INFO *file_load(OSSL_STORE_LOADER_CTX *ctx,
1120                                   const UI_METHOD *ui_method, void *ui_data)
1121 {
1122     OSSL_STORE_INFO *result = NULL;
1123
1124     ctx->errcnt = 0;
1125     ERR_clear_error();
1126
1127     if (ctx->type == is_dir) {
1128         do {
1129             char *newname = NULL;
1130
1131             if (ctx->_.dir.last_entry == NULL) {
1132                 if (!ctx->_.dir.end_reached) {
1133                     char errbuf[256];
1134                     assert(ctx->_.dir.last_errno != 0);
1135                     errno = ctx->_.dir.last_errno;
1136                     ctx->errcnt++;
1137                     openssl_strerror_r(errno, errbuf, sizeof(errbuf));
1138                     OSSL_STOREerr(OSSL_STORE_F_FILE_LOAD, ERR_R_SYS_LIB);
1139                     ERR_add_error_data(1, errbuf);
1140                 }
1141                 return NULL;
1142             }
1143
1144             if (ctx->_.dir.last_entry[0] != '.'
1145                 && !file_name_to_uri(ctx, ctx->_.dir.last_entry, &newname))
1146                 return NULL;
1147
1148             /*
1149              * On the first call (with a NULL context), OPENSSL_DIR_read()
1150              * cares about the second argument.  On the following calls, it
1151              * only cares that it isn't NULL.  Therefore, we can safely give
1152              * it our URI here.
1153              */
1154             ctx->_.dir.last_entry = OPENSSL_DIR_read(&ctx->_.dir.ctx,
1155                                                      ctx->_.dir.uri);
1156             ctx->_.dir.last_errno = errno;
1157             if (ctx->_.dir.last_entry == NULL && ctx->_.dir.last_errno == 0)
1158                 ctx->_.dir.end_reached = 1;
1159
1160             if (newname != NULL
1161                 && (result = OSSL_STORE_INFO_new_NAME(newname)) == NULL) {
1162                 OPENSSL_free(newname);
1163                 OSSL_STOREerr(OSSL_STORE_F_FILE_LOAD, ERR_R_OSSL_STORE_LIB);
1164                 return NULL;
1165             }
1166         } while (result == NULL && !file_eof(ctx));
1167     } else {
1168         int matchcount = -1;
1169
1170         result = file_load_try_repeat(ctx, ui_method, ui_data);
1171         if (result != NULL)
1172             return result;
1173
1174         if (file_eof(ctx))
1175             return NULL;
1176
1177         do {
1178             char *pem_name = NULL;      /* PEM record name */
1179             char *pem_header = NULL;    /* PEM record header */
1180             unsigned char *data = NULL; /* DER encoded data */
1181             long len = 0;               /* DER encoded data length */
1182
1183             matchcount = -1;
1184             if (ctx->type == is_pem) {
1185                 if (!file_read_pem(ctx->_.file.file, &pem_name, &pem_header,
1186                                    &data, &len, ui_method, ui_data,
1187                                    (ctx->flags & FILE_FLAG_SECMEM) != 0)) {
1188                     ctx->errcnt++;
1189                     goto endloop;
1190                 }
1191             } else {
1192                 if (!file_read_asn1(ctx->_.file.file, &data, &len)) {
1193                     ctx->errcnt++;
1194                     goto endloop;
1195                 }
1196             }
1197
1198             result = file_load_try_decode(ctx, pem_name, pem_header, data, len,
1199                                           ui_method, ui_data, &matchcount);
1200
1201             if (result != NULL)
1202                 goto endloop;
1203
1204             /*
1205              * If a PEM name matches more than one handler, the handlers are
1206              * badly coded.
1207              */
1208             if (!ossl_assert(pem_name == NULL || matchcount <= 1)) {
1209                 ctx->errcnt++;
1210                 goto endloop;
1211             }
1212
1213             if (matchcount > 1) {
1214                 OSSL_STOREerr(OSSL_STORE_F_FILE_LOAD,
1215                               OSSL_STORE_R_AMBIGUOUS_CONTENT_TYPE);
1216             } else if (matchcount == 1) {
1217                 /*
1218                  * If there are other errors on the stack, they already show
1219                  * what the problem is.
1220                  */
1221                 if (ERR_peek_error() == 0) {
1222                     OSSL_STOREerr(OSSL_STORE_F_FILE_LOAD,
1223                                   OSSL_STORE_R_UNSUPPORTED_CONTENT_TYPE);
1224                     if (pem_name != NULL)
1225                         ERR_add_error_data(3, "PEM type is '", pem_name, "'");
1226                 }
1227             }
1228             if (matchcount > 0)
1229                 ctx->errcnt++;
1230
1231          endloop:
1232             pem_free_flag(pem_name, (ctx->flags & FILE_FLAG_SECMEM) != 0);
1233             pem_free_flag(pem_header, (ctx->flags & FILE_FLAG_SECMEM) != 0);
1234             pem_free_flag(data, (ctx->flags & FILE_FLAG_SECMEM) != 0);
1235         } while (matchcount == 0 && !file_eof(ctx) && !file_error(ctx));
1236
1237         /* We bail out on ambiguity */
1238         if (matchcount > 1)
1239             return NULL;
1240     }
1241
1242     return result;
1243 }
1244
1245 static int file_error(OSSL_STORE_LOADER_CTX *ctx)
1246 {
1247     return ctx->errcnt > 0;
1248 }
1249
1250 static int file_eof(OSSL_STORE_LOADER_CTX *ctx)
1251 {
1252     if (ctx->type == is_dir)
1253         return ctx->_.dir.end_reached;
1254
1255     if (ctx->_.file.last_handler != NULL
1256         && !ctx->_.file.last_handler->eof(ctx->_.file.last_handler_ctx))
1257         return 0;
1258     return BIO_eof(ctx->_.file.file);
1259 }
1260
1261 static int file_close(OSSL_STORE_LOADER_CTX *ctx)
1262 {
1263     if (ctx->type == is_dir) {
1264         OPENSSL_DIR_end(&ctx->_.dir.ctx);
1265     } else {
1266         BIO_free_all(ctx->_.file.file);
1267     }
1268     OSSL_STORE_LOADER_CTX_free(ctx);
1269     return 1;
1270 }
1271
1272 int ossl_store_file_detach_pem_bio_int(OSSL_STORE_LOADER_CTX *ctx)
1273 {
1274     OSSL_STORE_LOADER_CTX_free(ctx);
1275     return 1;
1276 }
1277
1278 static OSSL_STORE_LOADER file_loader =
1279     {
1280         "file",
1281         NULL,
1282         file_open,
1283         file_ctrl,
1284         file_load,
1285         file_eof,
1286         file_error,
1287         file_close
1288     };
1289
1290 static void store_file_loader_deinit(void)
1291 {
1292     ossl_store_unregister_loader_int(file_loader.scheme);
1293 }
1294
1295 int ossl_store_file_loader_init(void)
1296 {
1297     int ret = ossl_store_register_loader_int(&file_loader);
1298
1299     OPENSSL_atexit(store_file_loader_deinit);
1300     return ret;
1301 }