2 * Copyright 2016-2017 The OpenSSL Project Authors. All Rights Reserved.
4 * Licensed under the OpenSSL license (the "License"). You may not use
5 * this file except in compliance with the License. You can obtain a copy
6 * in the file LICENSE in the source distribution or at
7 * https://www.openssl.org/source/license.html
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 "store_locl.h"
36 static char *file_get_pass(const UI_METHOD *ui_method, char *pass,
37 size_t maxsize, const char *prompt_info, void *data)
43 OSSL_STOREerr(OSSL_STORE_F_FILE_GET_PASS, ERR_R_MALLOC_FAILURE);
47 if (ui_method != NULL)
48 UI_set_method(ui, ui_method);
49 UI_add_user_data(ui, data);
51 if ((prompt = UI_construct_prompt(ui, "pass phrase",
52 prompt_info)) == NULL) {
53 OSSL_STOREerr(OSSL_STORE_F_FILE_GET_PASS, ERR_R_MALLOC_FAILURE);
55 } else if (!UI_add_input_string(ui, prompt, UI_INPUT_FLAG_DEFAULT_PWD,
56 pass, 0, maxsize - 1)) {
57 OSSL_STOREerr(OSSL_STORE_F_FILE_GET_PASS, ERR_R_UI_LIB);
60 switch (UI_process(ui)) {
62 OSSL_STOREerr(OSSL_STORE_F_FILE_GET_PASS,
63 OSSL_STORE_R_UI_PROCESS_INTERRUPTED_OR_CANCELLED);
67 OSSL_STOREerr(OSSL_STORE_F_FILE_GET_PASS, ERR_R_UI_LIB);
80 struct pem_pass_data {
81 const UI_METHOD *ui_method;
83 const char *prompt_info;
85 static int file_fill_pem_pass_data(struct pem_pass_data *pass_data,
86 const char *prompt_info,
87 const UI_METHOD *ui_method, void *ui_data)
89 if (pass_data == NULL)
91 pass_data->ui_method = ui_method;
92 pass_data->data = ui_data;
93 pass_data->prompt_info = prompt_info;
96 static int file_get_pem_pass(char *buf, int num, int w, void *data)
98 struct pem_pass_data *pass_data = data;
99 char *pass = file_get_pass(pass_data->ui_method, buf, num,
100 pass_data->prompt_info, pass_data->data);
102 return pass == NULL ? 0 : strlen(pass);
106 * The file scheme handlers
110 * The try_decode function is called to check if the blob of data can
111 * be used by this handler, and if it can, decodes it into a supported
112 * OpenSSL type and returns a OSSL_STORE_INFO with the decoded data.
114 * pem_name: If this blob comes from a PEM file, this holds
115 * the PEM name. If it comes from another type of
116 * file, this is NULL.
117 * pem_header: If this blob comes from a PEM file, this holds
118 * the PEM headers. If it comes from another type of
119 * file, this is NULL.
120 * blob: The blob of data to match with what this handler
122 * len: The length of the blob.
123 * handler_ctx: For a handler marked repeatable, this pointer can
124 * be used to create a context for the handler. IT IS
125 * THE HANDLER'S RESPONSIBILITY TO CREATE AND DESTROY
126 * THIS CONTEXT APPROPRIATELY, i.e. create on first call
127 * and destroy when about to return NULL.
128 * matchcount: A pointer to an int to count matches for this data.
129 * Usually becomes 0 (no match) or 1 (match!), but may
130 * be higher in the (unlikely) event that the data matches
131 * more than one possibility. The int will always be
132 * zero when the function is called.
133 * ui_method: Application UI method for getting a password, pin
134 * or any other interactive data.
135 * ui_data: Application data to be passed to ui_method when
140 typedef OSSL_STORE_INFO *(*file_try_decode_fn)(const char *pem_name,
141 const char *pem_header,
142 const unsigned char *blob,
143 size_t len, void **handler_ctx,
145 const UI_METHOD *ui_method,
148 * The eof function should return 1 if there's no more data to be found
149 * with the handler_ctx, otherwise 0. This is only used when the handler is
152 typedef int (*file_eof_fn)(void *handler_ctx);
154 * The destroy_ctx function is used to destroy the handler_ctx that was
155 * intiated by a repeatable try_decode fuction. This is only used when
156 * the handler is marked repeatable.
158 typedef void (*file_destroy_ctx_fn)(void **handler_ctx);
160 typedef struct file_handler_st {
162 file_try_decode_fn try_decode;
164 file_destroy_ctx_fn destroy_ctx;
170 static OSSL_STORE_INFO *try_decode_PKCS12(const char *pem_name,
171 const char *pem_header,
172 const unsigned char *blob,
173 size_t len, void **pctx,
175 const UI_METHOD *ui_method,
178 OSSL_STORE_INFO *store_info = NULL;
179 STACK_OF(OSSL_STORE_INFO) *ctx = *pctx;
182 /* Initial parsing */
186 if (pem_name != NULL)
187 /* No match, there is no PEM PKCS12 tag */
190 if ((p12 = d2i_PKCS12(NULL, &blob, len)) != NULL) {
192 char tpass[PEM_BUFSIZE];
193 EVP_PKEY *pkey = NULL;
195 STACK_OF(X509) *chain = NULL;
199 if (PKCS12_verify_mac(p12, "", 0)
200 || PKCS12_verify_mac(p12, NULL, 0)) {
203 if ((pass = file_get_pass(ui_method, tpass, PEM_BUFSIZE,
204 "PKCS12 import password",
206 OSSL_STOREerr(OSSL_STORE_F_TRY_DECODE_PKCS12,
207 OSSL_STORE_R_PASSPHRASE_CALLBACK_ERROR);
210 if (!PKCS12_verify_mac(p12, pass, strlen(pass))) {
211 OSSL_STOREerr(OSSL_STORE_F_TRY_DECODE_PKCS12,
212 OSSL_STORE_R_ERROR_VERIFYING_PKCS12_MAC);
217 if (PKCS12_parse(p12, pass, &pkey, &cert, &chain)) {
218 OSSL_STORE_INFO *si_pkey = NULL;
219 OSSL_STORE_INFO *si_cert = NULL;
220 OSSL_STORE_INFO *si_ca = NULL;
222 if ((ctx = sk_OSSL_STORE_INFO_new_null()) != NULL
223 && (si_pkey = OSSL_STORE_INFO_new_PKEY(pkey)) != NULL
224 && sk_OSSL_STORE_INFO_push(ctx, si_pkey) != 0
225 && (si_cert = OSSL_STORE_INFO_new_CERT(cert)) != NULL
226 && sk_OSSL_STORE_INFO_push(ctx, si_cert) != 0) {
231 while(sk_X509_num(chain) > 0) {
232 X509 *ca = sk_X509_value(chain, 0);
234 if ((si_ca = OSSL_STORE_INFO_new_CERT(ca)) == NULL
235 || sk_OSSL_STORE_INFO_push(ctx, si_ca) == 0) {
240 (void)sk_X509_shift(chain);
244 OSSL_STORE_INFO_free(si_ca);
245 OSSL_STORE_INFO_free(si_cert);
246 OSSL_STORE_INFO_free(si_pkey);
247 sk_OSSL_STORE_INFO_pop_free(ctx, OSSL_STORE_INFO_free);
250 sk_X509_pop_free(chain, X509_free);
264 store_info = sk_OSSL_STORE_INFO_shift(ctx);
269 static int eof_PKCS12(void *ctx_)
271 STACK_OF(OSSL_STORE_INFO) *ctx = ctx_;
273 return ctx == NULL || sk_OSSL_STORE_INFO_num(ctx) == 0;
275 static void destroy_ctx_PKCS12(void **pctx)
277 STACK_OF(OSSL_STORE_INFO) *ctx = *pctx;
279 sk_OSSL_STORE_INFO_pop_free(ctx, OSSL_STORE_INFO_free);
282 static FILE_HANDLER PKCS12_handler = {
290 static OSSL_STORE_INFO *try_decode_PKCS8Encrypted(const char *pem_name,
291 const char *pem_header,
292 const unsigned char *blob,
293 size_t len, void **pctx,
295 const UI_METHOD *ui_method,
299 char kbuf[PEM_BUFSIZE];
301 const X509_ALGOR *dalg = NULL;
302 const ASN1_OCTET_STRING *doct = NULL;
303 OSSL_STORE_INFO *store_info = NULL;
305 unsigned char *new_data = NULL;
308 if (pem_name != NULL) {
309 if (strcmp(pem_name, PEM_STRING_PKCS8) != 0)
314 if ((p8 = d2i_X509_SIG(NULL, &blob, len)) == NULL)
319 if ((mem = BUF_MEM_new()) == NULL) {
320 OSSL_STOREerr(OSSL_STORE_F_TRY_DECODE_PKCS8ENCRYPTED,
321 ERR_R_MALLOC_FAILURE);
325 if ((pass = file_get_pass(ui_method, kbuf, PEM_BUFSIZE,
326 "PKCS8 decrypt password", ui_data)) == NULL) {
327 OSSL_STOREerr(OSSL_STORE_F_TRY_DECODE_PKCS8ENCRYPTED,
328 OSSL_STORE_R_BAD_PASSWORD_READ);
332 X509_SIG_get0(p8, &dalg, &doct);
333 if (!PKCS12_pbe_crypt(dalg, pass, strlen(pass), doct->data, doct->length,
334 &new_data, &new_data_len, 0))
337 mem->data = (char *)new_data;
338 mem->max = mem->length = (size_t)new_data_len;
341 store_info = ossl_store_info_new_EMBEDDED(PEM_STRING_PKCS8INF, mem);
342 if (store_info == NULL) {
343 OSSL_STOREerr(OSSL_STORE_F_TRY_DECODE_PKCS8ENCRYPTED,
344 ERR_R_MALLOC_FAILURE);
354 static FILE_HANDLER PKCS8Encrypted_handler = {
356 try_decode_PKCS8Encrypted
359 int pem_check_suffix(const char *pem_str, const char *suffix);
360 static OSSL_STORE_INFO *try_decode_PrivateKey(const char *pem_name,
361 const char *pem_header,
362 const unsigned char *blob,
363 size_t len, void **pctx,
365 const UI_METHOD *ui_method,
368 OSSL_STORE_INFO *store_info = NULL;
369 EVP_PKEY *pkey = NULL;
370 const EVP_PKEY_ASN1_METHOD *ameth = NULL;
372 if (pem_name != NULL) {
373 if (strcmp(pem_name, PEM_STRING_PKCS8INF) == 0) {
374 PKCS8_PRIV_KEY_INFO *p8inf =
375 d2i_PKCS8_PRIV_KEY_INFO(NULL, &blob, len);
379 pkey = EVP_PKCS82PKEY(p8inf);
380 PKCS8_PRIV_KEY_INFO_free(p8inf);
384 if ((slen = pem_check_suffix(pem_name, "PRIVATE KEY")) > 0
385 && (ameth = EVP_PKEY_asn1_find_str(NULL, pem_name,
388 pkey = d2i_PrivateKey(ameth->pkey_id, NULL, &blob, len);
394 for (i = 0; i < EVP_PKEY_asn1_get_count(); i++) {
395 EVP_PKEY *tmp_pkey = NULL;
396 const unsigned char *tmp_blob = blob;
398 ameth = EVP_PKEY_asn1_get0(i);
399 if (ameth->pkey_flags & ASN1_PKEY_ALIAS)
402 tmp_pkey = d2i_PrivateKey(ameth->pkey_id, NULL, &tmp_blob, len);
403 if (tmp_pkey != NULL) {
405 EVP_PKEY_free(tmp_pkey);
412 if (*matchcount > 1) {
421 store_info = OSSL_STORE_INFO_new_PKEY(pkey);
422 if (store_info == NULL)
427 static FILE_HANDLER PrivateKey_handler = {
429 try_decode_PrivateKey
432 static OSSL_STORE_INFO *try_decode_PUBKEY(const char *pem_name,
433 const char *pem_header,
434 const unsigned char *blob,
435 size_t len, void **pctx,
437 const UI_METHOD *ui_method,
440 OSSL_STORE_INFO *store_info = NULL;
441 EVP_PKEY *pkey = NULL;
443 if (pem_name != NULL) {
444 if (strcmp(pem_name, PEM_STRING_PUBLIC) != 0)
450 if ((pkey = d2i_PUBKEY(NULL, &blob, len)) != NULL) {
452 store_info = OSSL_STORE_INFO_new_PKEY(pkey);
457 static FILE_HANDLER PUBKEY_handler = {
462 static OSSL_STORE_INFO *try_decode_params(const char *pem_name,
463 const char *pem_header,
464 const unsigned char *blob,
465 size_t len, void **pctx,
467 const UI_METHOD *ui_method,
470 OSSL_STORE_INFO *store_info = NULL;
472 EVP_PKEY *pkey = NULL;
473 const EVP_PKEY_ASN1_METHOD *ameth = NULL;
476 if (pem_name != NULL) {
477 if ((slen = pem_check_suffix(pem_name, "PARAMETERS")) == 0)
482 if ((pkey = EVP_PKEY_new()) == NULL) {
483 OSSL_STOREerr(OSSL_STORE_F_TRY_DECODE_PARAMS, ERR_R_EVP_LIB);
488 if (EVP_PKEY_set_type_str(pkey, pem_name, slen)
489 && (ameth = EVP_PKEY_get0_asn1(pkey)) != NULL
490 && ameth->param_decode != NULL
491 && ameth->param_decode(pkey, &blob, len))
496 for (i = 0; i < EVP_PKEY_asn1_get_count(); i++) {
497 const unsigned char *tmp_blob = blob;
499 ameth = EVP_PKEY_asn1_get0(i);
500 if (ameth->pkey_flags & ASN1_PKEY_ALIAS)
502 if (EVP_PKEY_set_type(pkey, ameth->pkey_id)
503 && (ameth = EVP_PKEY_get0_asn1(pkey)) != NULL
504 && ameth->param_decode != NULL
505 && ameth->param_decode(pkey, &tmp_blob, len)) {
514 store_info = OSSL_STORE_INFO_new_PARAMS(pkey);
515 if (store_info == NULL)
520 static FILE_HANDLER params_handler = {
525 static OSSL_STORE_INFO *try_decode_X509Certificate(const char *pem_name,
526 const char *pem_header,
527 const unsigned char *blob,
528 size_t len, void **pctx,
530 const UI_METHOD *ui_method,
533 OSSL_STORE_INFO *store_info = NULL;
537 * In most cases, we can try to interpret the serialized data as a trusted
538 * cert (X509 + X509_AUX) and fall back to reading it as a normal cert
539 * (just X509), but if the PEM name specifically declares it as a trusted
540 * cert, then no fallback should be engaged. |ignore_trusted| tells if
541 * the fallback can be used (1) or not (0).
543 int ignore_trusted = 1;
545 if (pem_name != NULL) {
546 if (strcmp(pem_name, PEM_STRING_X509_TRUSTED) == 0)
548 else if (strcmp(pem_name, PEM_STRING_X509_OLD) != 0
549 && strcmp(pem_name, PEM_STRING_X509) != 0)
555 if ((cert = d2i_X509_AUX(NULL, &blob, len)) != NULL
556 || (ignore_trusted && (cert = d2i_X509(NULL, &blob, len)) != NULL)) {
558 store_info = OSSL_STORE_INFO_new_CERT(cert);
561 if (store_info == NULL)
566 static FILE_HANDLER X509Certificate_handler = {
568 try_decode_X509Certificate
571 static OSSL_STORE_INFO *try_decode_X509CRL(const char *pem_name,
572 const char *pem_header,
573 const unsigned char *blob,
574 size_t len, void **pctx,
576 const UI_METHOD *ui_method,
579 OSSL_STORE_INFO *store_info = NULL;
580 X509_CRL *crl = NULL;
582 if (pem_name != NULL) {
583 if (strcmp(pem_name, PEM_STRING_X509_CRL) != 0)
589 if ((crl = d2i_X509_CRL(NULL, &blob, len)) != NULL) {
591 store_info = OSSL_STORE_INFO_new_CRL(crl);
594 if (store_info == NULL)
599 static FILE_HANDLER X509CRL_handler = {
604 static const FILE_HANDLER *file_handlers[] = {
606 &PKCS8Encrypted_handler,
607 &X509Certificate_handler,
619 struct ossl_store_loader_ctx_st {
627 struct { /* Used with is_raw and is_pem */
631 * The following are used when the handler is marked as
634 const FILE_HANDLER *last_handler;
635 void *last_handler_ctx;
637 struct { /* Used with is_dir */
638 OPENSSL_DIR_CTX *ctx;
643 * The directory reading utility we have combines opening with
644 * reading the first name. To make sure we can detect the end
645 * at the right time, we read early and cache the name.
647 const char *last_entry;
653 static void OSSL_STORE_LOADER_CTX_free(OSSL_STORE_LOADER_CTX *ctx)
655 if (ctx->type == is_dir) {
656 OPENSSL_free(ctx->_.dir.uri);
658 if (ctx->_.file.last_handler != NULL) {
659 ctx->_.file.last_handler->destroy_ctx(&ctx->_.file.last_handler_ctx);
660 ctx->_.file.last_handler_ctx = NULL;
661 ctx->_.file.last_handler = NULL;
667 static OSSL_STORE_LOADER_CTX *file_open(const OSSL_STORE_LOADER *loader,
669 const UI_METHOD *ui_method,
672 OSSL_STORE_LOADER_CTX *ctx = NULL;
674 const char *path = NULL;
676 if (strncasecmp(uri, "file:", 5) == 0) {
677 if (strncmp(&uri[5], "//localhost/", 12) == 0) {
679 } else if (strncmp(&uri[5], "///", 3) == 0) {
681 } else if (strncmp(&uri[5], "//", 2) != 0) {
684 OSSL_STOREerr(OSSL_STORE_F_FILE_OPEN,
685 OSSL_STORE_R_URI_AUTHORITY_UNSUPPORED);
690 * If the scheme "file" was an explicit part of the URI, the path must
691 * be absolute. So says RFC 8089
693 if (path[0] != '/') {
694 OSSL_STOREerr(OSSL_STORE_F_FILE_OPEN,
695 OSSL_STORE_R_PATH_MUST_BE_ABSOLUTE);
700 /* Windows file: URIs with a drive letter start with a / */
701 if (path[0] == '/' && path[2] == ':' && path[3] == '/')
709 if (stat(path, &st) < 0) {
710 SYSerr(SYS_F_STAT, errno);
711 ERR_add_error_data(1, path);
715 ctx = OPENSSL_zalloc(sizeof(*ctx));
717 OSSL_STOREerr(OSSL_STORE_F_FILE_OPEN, ERR_R_MALLOC_FAILURE);
721 if ((st.st_mode & S_IFDIR) == S_IFDIR) {
723 * Try to copy everything, even if we know that some of them must be
724 * NULL for the moment. This prevents errors in the future, when more
725 * components may be used.
727 ctx->_.dir.uri = OPENSSL_strdup(uri);
730 if (ctx->_.dir.uri == NULL)
733 ctx->_.dir.last_entry = OPENSSL_DIR_read(&ctx->_.dir.ctx, path);
734 ctx->_.dir.last_errno = errno;
735 if (ctx->_.dir.last_entry == NULL) {
736 if (ctx->_.dir.last_errno != 0) {
738 errno = ctx->_.dir.last_errno;
739 openssl_strerror_r(errno, errbuf, sizeof(errbuf));
740 OSSL_STOREerr(OSSL_STORE_F_FILE_OPEN, ERR_R_SYS_LIB);
741 ERR_add_error_data(1, errbuf);
744 ctx->_.dir.end_reached = 1;
750 if ((buff = BIO_new(BIO_f_buffer())) == NULL
751 || (ctx->_.file.file = BIO_new_file(path, "rb")) == NULL) {
756 ctx->_.file.file = BIO_push(buff, ctx->_.file.file);
757 if (BIO_buffer_peek(ctx->_.file.file, peekbuf, sizeof(peekbuf)-1) > 0) {
758 peekbuf[sizeof(peekbuf)-1] = '\0';
759 if (strstr(peekbuf, "-----BEGIN ") != NULL)
766 OSSL_STORE_LOADER_CTX_free(ctx);
770 static OSSL_STORE_INFO *file_load_try_decode(OSSL_STORE_LOADER_CTX *ctx,
771 const char *pem_name,
772 const char *pem_header,
773 unsigned char *data, size_t len,
774 const UI_METHOD *ui_method,
775 void *ui_data, int *matchcount)
777 OSSL_STORE_INFO *result = NULL;
778 BUF_MEM *new_mem = NULL;
779 char *new_pem_name = NULL;
785 void *handler_ctx = NULL;
786 const FILE_HANDLER **matching_handlers =
787 OPENSSL_zalloc(sizeof(*matching_handlers)
788 * OSSL_NELEM(file_handlers));
790 if (matching_handlers == NULL) {
791 OSSL_STOREerr(OSSL_STORE_F_FILE_LOAD_TRY_DECODE,
792 ERR_R_MALLOC_FAILURE);
797 for (i = 0; i < OSSL_NELEM(file_handlers); i++) {
798 const FILE_HANDLER *handler = file_handlers[i];
799 int try_matchcount = 0;
800 void *tmp_handler_ctx = NULL;
801 OSSL_STORE_INFO *tmp_result =
802 handler->try_decode(pem_name, pem_header, data, len,
803 &tmp_handler_ctx, &try_matchcount,
806 if (try_matchcount > 0) {
807 if (matching_handlers)
808 matching_handlers[*matchcount] = handler;
811 handler->destroy_ctx(&handler_ctx);
812 handler_ctx = tmp_handler_ctx;
814 if ((*matchcount += try_matchcount) > 1) {
815 /* more than one match => ambiguous, kill any result */
816 OSSL_STORE_INFO_free(result);
817 OSSL_STORE_INFO_free(tmp_result);
818 if (handler->destroy_ctx != NULL)
819 handler->destroy_ctx(&handler_ctx);
829 if (*matchcount == 1 && matching_handlers[0]->repeatable) {
830 ctx->_.file.last_handler = matching_handlers[0];
831 ctx->_.file.last_handler_ctx = handler_ctx;
834 OPENSSL_free(matching_handlers);
838 OPENSSL_free(new_pem_name);
839 BUF_MEM_free(new_mem);
842 && (t = OSSL_STORE_INFO_get_type(result)) == OSSL_STORE_INFO_EMBEDDED) {
843 pem_name = new_pem_name =
844 ossl_store_info_get0_EMBEDDED_pem_name(result);
845 new_mem = ossl_store_info_get0_EMBEDDED_buffer(result);
846 data = (unsigned char *)new_mem->data;
847 len = new_mem->length;
848 OPENSSL_free(result);
859 static OSSL_STORE_INFO *file_load_try_repeat(OSSL_STORE_LOADER_CTX *ctx,
860 const UI_METHOD *ui_method,
863 OSSL_STORE_INFO *result = NULL;
864 int try_matchcount = 0;
866 if (ctx->_.file.last_handler != NULL) {
868 ctx->_.file.last_handler->try_decode(NULL, NULL, NULL, 0,
869 &ctx->_.file.last_handler_ctx,
873 if (result == NULL) {
874 ctx->_.file.last_handler->destroy_ctx(&ctx->_.file.last_handler_ctx);
875 ctx->_.file.last_handler_ctx = NULL;
876 ctx->_.file.last_handler = NULL;
882 static int file_read_pem(BIO *bp, char **pem_name, char **pem_header,
883 unsigned char **data, long *len,
884 const UI_METHOD *ui_method,
887 int i = PEM_read_bio(bp, pem_name, pem_header, data, len);
893 * 10 is the number of characters in "Proc-Type:", which
894 * PEM_get_EVP_CIPHER_INFO() requires to be present.
895 * If the PEM header has less characters than that, it's
896 * not worth spending cycles on it.
898 if (strlen(*pem_header) > 10) {
899 EVP_CIPHER_INFO cipher;
900 struct pem_pass_data pass_data;
902 if (!PEM_get_EVP_CIPHER_INFO(*pem_header, &cipher)
903 || !file_fill_pem_pass_data(&pass_data, "PEM", ui_method, ui_data)
904 || !PEM_do_header(&cipher, *data, len, file_get_pem_pass,
912 static int file_read_asn1(BIO *bp, unsigned char **data, long *len)
916 if (asn1_d2i_read_bio(bp, &mem) < 0)
919 *data = (unsigned char *)mem->data;
920 *len = (long)mem->length;
926 static int ends_with_dirsep(const char *uri)
929 uri += strlen(uri) - 1;
931 if (*uri == ']' || *uri == '>' || *uri == ':')
940 static int file_name_to_uri(OSSL_STORE_LOADER_CTX *ctx, const char *name,
943 assert(name != NULL);
944 assert(data != NULL);
946 const char *pathsep = ends_with_dirsep(ctx->_.dir.uri) ? "" : "/";
947 long calculated_length = strlen(ctx->_.dir.uri) + strlen(pathsep)
948 + strlen(name) + 1 /* \0 */;
950 *data = OPENSSL_zalloc(calculated_length);
952 OSSL_STOREerr(OSSL_STORE_F_FILE_NAME_TO_URI, ERR_R_MALLOC_FAILURE);
956 OPENSSL_strlcat(*data, ctx->_.dir.uri, calculated_length);
957 OPENSSL_strlcat(*data, pathsep, calculated_length);
958 OPENSSL_strlcat(*data, name, calculated_length);
963 static int file_eof(OSSL_STORE_LOADER_CTX *ctx);
964 static int file_error(OSSL_STORE_LOADER_CTX *ctx);
965 static OSSL_STORE_INFO *file_load(OSSL_STORE_LOADER_CTX *ctx,
966 const UI_METHOD *ui_method, void *ui_data)
968 OSSL_STORE_INFO *result = NULL;
973 if (ctx->type == is_dir) {
975 char *newname = NULL;
977 if (ctx->_.dir.last_entry == NULL) {
978 if (!ctx->_.dir.end_reached) {
980 assert(ctx->_.dir.last_errno != 0);
981 errno = ctx->_.dir.last_errno;
983 openssl_strerror_r(errno, errbuf, sizeof(errbuf));
984 OSSL_STOREerr(OSSL_STORE_F_FILE_LOAD, ERR_R_SYS_LIB);
985 ERR_add_error_data(1, errbuf);
990 if (ctx->_.dir.last_entry[0] != '.'
991 && !file_name_to_uri(ctx, ctx->_.dir.last_entry, &newname))
995 * On the first call (with a NULL context), OPENSSL_DIR_read()
996 * cares about the second argument. On the following calls, it
997 * only cares that it isn't NULL. Therefore, we can safely give
1000 ctx->_.dir.last_entry = OPENSSL_DIR_read(&ctx->_.dir.ctx,
1002 ctx->_.dir.last_errno = errno;
1003 if (ctx->_.dir.last_entry == NULL && ctx->_.dir.last_errno == 0)
1004 ctx->_.dir.end_reached = 1;
1007 && (result = OSSL_STORE_INFO_new_NAME(newname)) == NULL) {
1008 OPENSSL_free(newname);
1009 OSSL_STOREerr(OSSL_STORE_F_FILE_LOAD, ERR_R_OSSL_STORE_LIB);
1012 } while (result == NULL && !file_eof(ctx));
1014 int matchcount = -1;
1016 result = file_load_try_repeat(ctx, ui_method, ui_data);
1024 char *pem_name = NULL; /* PEM record name */
1025 char *pem_header = NULL; /* PEM record header */
1026 unsigned char *data = NULL; /* DER encoded data */
1027 long len = 0; /* DER encoded data length */
1030 if (ctx->type == is_pem) {
1031 if (!file_read_pem(ctx->_.file.file, &pem_name, &pem_header,
1032 &data, &len, ui_method, ui_data)) {
1037 if (!file_read_asn1(ctx->_.file.file, &data, &len)) {
1043 result = file_load_try_decode(ctx, pem_name, pem_header, data, len,
1044 ui_method, ui_data, &matchcount);
1050 * If a PEM name matches more than one handler, the handlers are
1053 if (!ossl_assert(pem_name == NULL || matchcount <= 1)) {
1058 if (matchcount > 1) {
1059 OSSL_STOREerr(OSSL_STORE_F_FILE_LOAD,
1060 OSSL_STORE_R_AMBIGUOUS_CONTENT_TYPE);
1061 } else if (matchcount == 1) {
1063 * If there are other errors on the stack, they already show
1064 * what the problem is.
1066 if (ERR_peek_error() == 0) {
1067 OSSL_STOREerr(OSSL_STORE_F_FILE_LOAD,
1068 OSSL_STORE_R_UNSUPPORTED_CONTENT_TYPE);
1069 if (pem_name != NULL)
1070 ERR_add_error_data(3, "PEM type is '", pem_name, "'");
1077 OPENSSL_free(pem_name);
1078 OPENSSL_free(pem_header);
1080 } while (matchcount == 0 && !file_eof(ctx) && !file_error(ctx));
1082 /* We bail out on ambiguity */
1090 static int file_error(OSSL_STORE_LOADER_CTX *ctx)
1092 return ctx->errcnt > 0;
1095 static int file_eof(OSSL_STORE_LOADER_CTX *ctx)
1097 if (ctx->type == is_dir)
1098 return ctx->_.dir.end_reached;
1100 if (ctx->_.file.last_handler != NULL
1101 && !ctx->_.file.last_handler->eof(ctx->_.file.last_handler_ctx))
1103 return BIO_eof(ctx->_.file.file);
1106 static int file_close(OSSL_STORE_LOADER_CTX *ctx)
1108 if (ctx->type == is_dir) {
1109 OPENSSL_DIR_end(&ctx->_.dir.ctx);
1111 BIO_free_all(ctx->_.file.file);
1113 OSSL_STORE_LOADER_CTX_free(ctx);
1117 static OSSL_STORE_LOADER file_loader =
1129 static void store_file_loader_deinit(void)
1131 ossl_store_unregister_loader_int(file_loader.scheme);
1134 int ossl_store_file_loader_init(void)
1136 int ret = ossl_store_register_loader_int(&file_loader);
1138 OPENSSL_atexit(store_file_loader_deinit);