2 * Copyright 2016-2018 The OpenSSL Project Authors. All Rights Reserved.
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
16 #include <openssl/bio.h>
17 #include <openssl/dsa.h> /* For d2i_DSAPrivateKey */
18 #include <openssl/err.h>
19 #include <openssl/evp.h>
20 #include <openssl/pem.h>
21 #include <openssl/pkcs12.h> /* For the PKCS8 stuff o.O */
22 #include <openssl/rsa.h> /* For d2i_RSAPrivateKey */
23 #include <openssl/safestack.h>
24 #include <openssl/store.h>
25 #include <openssl/ui.h>
26 #include <openssl/x509.h> /* For the PKCS8 stuff o.O */
27 #include "internal/asn1_int.h"
28 #include "internal/ctype.h"
29 #include "internal/o_dir.h"
30 #include "internal/cryptlib.h"
31 #include "internal/store_int.h"
32 #include "store_locl.h"
39 # define S_ISDIR(a) (((a) & S_IFMT) == S_IFDIR)
47 static char *file_get_pass(const UI_METHOD *ui_method, char *pass,
48 size_t maxsize, const char *prompt_info, void *data)
54 OSSL_STOREerr(OSSL_STORE_F_FILE_GET_PASS, ERR_R_MALLOC_FAILURE);
58 if (ui_method != NULL)
59 UI_set_method(ui, ui_method);
60 UI_add_user_data(ui, data);
62 if ((prompt = UI_construct_prompt(ui, "pass phrase",
63 prompt_info)) == NULL) {
64 OSSL_STOREerr(OSSL_STORE_F_FILE_GET_PASS, ERR_R_MALLOC_FAILURE);
66 } else if (!UI_add_input_string(ui, prompt, UI_INPUT_FLAG_DEFAULT_PWD,
67 pass, 0, maxsize - 1)) {
68 OSSL_STOREerr(OSSL_STORE_F_FILE_GET_PASS, ERR_R_UI_LIB);
71 switch (UI_process(ui)) {
73 OSSL_STOREerr(OSSL_STORE_F_FILE_GET_PASS,
74 OSSL_STORE_R_UI_PROCESS_INTERRUPTED_OR_CANCELLED);
78 OSSL_STOREerr(OSSL_STORE_F_FILE_GET_PASS, ERR_R_UI_LIB);
91 struct pem_pass_data {
92 const UI_METHOD *ui_method;
94 const char *prompt_info;
97 static int file_fill_pem_pass_data(struct pem_pass_data *pass_data,
98 const char *prompt_info,
99 const UI_METHOD *ui_method, void *ui_data)
101 if (pass_data == NULL)
103 pass_data->ui_method = ui_method;
104 pass_data->data = ui_data;
105 pass_data->prompt_info = prompt_info;
109 /* This is used anywhere a pem_password_cb is needed */
110 static int file_get_pem_pass(char *buf, int num, int w, void *data)
112 struct pem_pass_data *pass_data = data;
113 char *pass = file_get_pass(pass_data->ui_method, buf, num,
114 pass_data->prompt_info, pass_data->data);
116 return pass == NULL ? 0 : strlen(pass);
120 * The file scheme decoders
121 * ------------------------
123 * Each possible data type has its own decoder, which either operates
124 * through a given PEM name, or attempts to decode to see if the blob
125 * it's given is decodable for its data type. The assumption is that
126 * only the correct data type will match the content.
130 * The try_decode function is called to check if the blob of data can
131 * be used by this handler, and if it can, decodes it into a supported
132 * OpenSSL type and returns a OSSL_STORE_INFO with the decoded data.
134 * pem_name: If this blob comes from a PEM file, this holds
135 * the PEM name. If it comes from another type of
136 * file, this is NULL.
137 * pem_header: If this blob comes from a PEM file, this holds
138 * the PEM headers. If it comes from another type of
139 * file, this is NULL.
140 * blob: The blob of data to match with what this handler
142 * len: The length of the blob.
143 * handler_ctx: For a handler marked repeatable, this pointer can
144 * be used to create a context for the handler. IT IS
145 * THE HANDLER'S RESPONSIBILITY TO CREATE AND DESTROY
146 * THIS CONTEXT APPROPRIATELY, i.e. create on first call
147 * and destroy when about to return NULL.
148 * matchcount: A pointer to an int to count matches for this data.
149 * Usually becomes 0 (no match) or 1 (match!), but may
150 * be higher in the (unlikely) event that the data matches
151 * more than one possibility. The int will always be
152 * zero when the function is called.
153 * ui_method: Application UI method for getting a password, pin
154 * or any other interactive data.
155 * ui_data: Application data to be passed to ui_method when
160 typedef OSSL_STORE_INFO *(*file_try_decode_fn)(const char *pem_name,
161 const char *pem_header,
162 const unsigned char *blob,
163 size_t len, void **handler_ctx,
165 const UI_METHOD *ui_method,
168 * The eof function should return 1 if there's no more data to be found
169 * with the handler_ctx, otherwise 0. This is only used when the handler is
172 typedef int (*file_eof_fn)(void *handler_ctx);
174 * The destroy_ctx function is used to destroy the handler_ctx that was
175 * initiated by a repeatable try_decode function. This is only used when
176 * the handler is marked repeatable.
178 typedef void (*file_destroy_ctx_fn)(void **handler_ctx);
180 typedef struct file_handler_st {
182 file_try_decode_fn try_decode;
184 file_destroy_ctx_fn destroy_ctx;
191 * PKCS#12 decoder. It operates by decoding all of the blob content,
192 * extracting all the interesting data from it and storing them internally,
193 * then serving them one piece at a time.
195 static OSSL_STORE_INFO *try_decode_PKCS12(const char *pem_name,
196 const char *pem_header,
197 const unsigned char *blob,
198 size_t len, void **pctx,
200 const UI_METHOD *ui_method,
203 OSSL_STORE_INFO *store_info = NULL;
204 STACK_OF(OSSL_STORE_INFO) *ctx = *pctx;
207 /* Initial parsing */
211 if (pem_name != NULL)
212 /* No match, there is no PEM PKCS12 tag */
215 if ((p12 = d2i_PKCS12(NULL, &blob, len)) != NULL) {
217 char tpass[PEM_BUFSIZE];
218 EVP_PKEY *pkey = NULL;
220 STACK_OF(X509) *chain = NULL;
224 if (PKCS12_verify_mac(p12, "", 0)
225 || PKCS12_verify_mac(p12, NULL, 0)) {
228 if ((pass = file_get_pass(ui_method, tpass, PEM_BUFSIZE,
229 "PKCS12 import password",
231 OSSL_STOREerr(OSSL_STORE_F_TRY_DECODE_PKCS12,
232 OSSL_STORE_R_PASSPHRASE_CALLBACK_ERROR);
235 if (!PKCS12_verify_mac(p12, pass, strlen(pass))) {
236 OSSL_STOREerr(OSSL_STORE_F_TRY_DECODE_PKCS12,
237 OSSL_STORE_R_ERROR_VERIFYING_PKCS12_MAC);
242 if (PKCS12_parse(p12, pass, &pkey, &cert, &chain)) {
243 OSSL_STORE_INFO *osi_pkey = NULL;
244 OSSL_STORE_INFO *osi_cert = NULL;
245 OSSL_STORE_INFO *osi_ca = NULL;
247 if ((ctx = sk_OSSL_STORE_INFO_new_null()) != NULL
248 && (osi_pkey = OSSL_STORE_INFO_new_PKEY(pkey)) != NULL
249 && sk_OSSL_STORE_INFO_push(ctx, osi_pkey) != 0
250 && (osi_cert = OSSL_STORE_INFO_new_CERT(cert)) != NULL
251 && sk_OSSL_STORE_INFO_push(ctx, osi_cert) != 0) {
256 while(sk_X509_num(chain) > 0) {
257 X509 *ca = sk_X509_value(chain, 0);
259 if ((osi_ca = OSSL_STORE_INFO_new_CERT(ca)) == NULL
260 || sk_OSSL_STORE_INFO_push(ctx, osi_ca) == 0) {
265 (void)sk_X509_shift(chain);
269 OSSL_STORE_INFO_free(osi_ca);
270 OSSL_STORE_INFO_free(osi_cert);
271 OSSL_STORE_INFO_free(osi_pkey);
272 sk_OSSL_STORE_INFO_pop_free(ctx, OSSL_STORE_INFO_free);
275 sk_X509_pop_free(chain, X509_free);
289 store_info = sk_OSSL_STORE_INFO_shift(ctx);
295 static int eof_PKCS12(void *ctx_)
297 STACK_OF(OSSL_STORE_INFO) *ctx = ctx_;
299 return ctx == NULL || sk_OSSL_STORE_INFO_num(ctx) == 0;
302 static void destroy_ctx_PKCS12(void **pctx)
304 STACK_OF(OSSL_STORE_INFO) *ctx = *pctx;
306 sk_OSSL_STORE_INFO_pop_free(ctx, OSSL_STORE_INFO_free);
310 static FILE_HANDLER PKCS12_handler = {
319 * Encrypted PKCS#8 decoder. It operates by just decrypting the given blob
320 * into a new blob, which is returned as an EMBEDDED STORE_INFO. The whole
321 * decoding process will then start over with the new blob.
323 static OSSL_STORE_INFO *try_decode_PKCS8Encrypted(const char *pem_name,
324 const char *pem_header,
325 const unsigned char *blob,
326 size_t len, void **pctx,
328 const UI_METHOD *ui_method,
332 char kbuf[PEM_BUFSIZE];
334 const X509_ALGOR *dalg = NULL;
335 const ASN1_OCTET_STRING *doct = NULL;
336 OSSL_STORE_INFO *store_info = NULL;
338 unsigned char *new_data = NULL;
341 if (pem_name != NULL) {
342 if (strcmp(pem_name, PEM_STRING_PKCS8) != 0)
347 if ((p8 = d2i_X509_SIG(NULL, &blob, len)) == NULL)
352 if ((mem = BUF_MEM_new()) == NULL) {
353 OSSL_STOREerr(OSSL_STORE_F_TRY_DECODE_PKCS8ENCRYPTED,
354 ERR_R_MALLOC_FAILURE);
358 if ((pass = file_get_pass(ui_method, kbuf, PEM_BUFSIZE,
359 "PKCS8 decrypt password", ui_data)) == NULL) {
360 OSSL_STOREerr(OSSL_STORE_F_TRY_DECODE_PKCS8ENCRYPTED,
361 OSSL_STORE_R_BAD_PASSWORD_READ);
365 X509_SIG_get0(p8, &dalg, &doct);
366 if (!PKCS12_pbe_crypt(dalg, pass, strlen(pass), doct->data, doct->length,
367 &new_data, &new_data_len, 0))
370 mem->data = (char *)new_data;
371 mem->max = mem->length = (size_t)new_data_len;
374 store_info = ossl_store_info_new_EMBEDDED(PEM_STRING_PKCS8INF, mem);
375 if (store_info == NULL) {
376 OSSL_STOREerr(OSSL_STORE_F_TRY_DECODE_PKCS8ENCRYPTED,
377 ERR_R_MALLOC_FAILURE);
388 static FILE_HANDLER PKCS8Encrypted_handler = {
390 try_decode_PKCS8Encrypted
394 * Private key decoder. Decodes all sorts of private keys, both PKCS#8
395 * encoded ones and old style PEM ones (with the key type is encoded into
398 int pem_check_suffix(const char *pem_str, const char *suffix);
399 static OSSL_STORE_INFO *try_decode_PrivateKey(const char *pem_name,
400 const char *pem_header,
401 const unsigned char *blob,
402 size_t len, void **pctx,
404 const UI_METHOD *ui_method,
407 OSSL_STORE_INFO *store_info = NULL;
408 EVP_PKEY *pkey = NULL;
409 const EVP_PKEY_ASN1_METHOD *ameth = NULL;
411 if (pem_name != NULL) {
412 if (strcmp(pem_name, PEM_STRING_PKCS8INF) == 0) {
413 PKCS8_PRIV_KEY_INFO *p8inf =
414 d2i_PKCS8_PRIV_KEY_INFO(NULL, &blob, len);
418 pkey = EVP_PKCS82PKEY(p8inf);
419 PKCS8_PRIV_KEY_INFO_free(p8inf);
423 if ((slen = pem_check_suffix(pem_name, "PRIVATE KEY")) > 0
424 && (ameth = EVP_PKEY_asn1_find_str(NULL, pem_name,
427 pkey = d2i_PrivateKey(ameth->pkey_id, NULL, &blob, len);
433 for (i = 0; i < EVP_PKEY_asn1_get_count(); i++) {
434 EVP_PKEY *tmp_pkey = NULL;
435 const unsigned char *tmp_blob = blob;
437 ameth = EVP_PKEY_asn1_get0(i);
438 if (ameth->pkey_flags & ASN1_PKEY_ALIAS)
441 tmp_pkey = d2i_PrivateKey(ameth->pkey_id, NULL, &tmp_blob, len);
442 if (tmp_pkey != NULL) {
444 EVP_PKEY_free(tmp_pkey);
451 if (*matchcount > 1) {
460 store_info = OSSL_STORE_INFO_new_PKEY(pkey);
461 if (store_info == NULL)
467 static FILE_HANDLER PrivateKey_handler = {
469 try_decode_PrivateKey
473 * Public key decoder. Only supports SubjectPublicKeyInfo formatted keys.
475 static OSSL_STORE_INFO *try_decode_PUBKEY(const char *pem_name,
476 const char *pem_header,
477 const unsigned char *blob,
478 size_t len, void **pctx,
480 const UI_METHOD *ui_method,
483 OSSL_STORE_INFO *store_info = NULL;
484 EVP_PKEY *pkey = NULL;
486 if (pem_name != NULL) {
487 if (strcmp(pem_name, PEM_STRING_PUBLIC) != 0)
493 if ((pkey = d2i_PUBKEY(NULL, &blob, len)) != NULL) {
495 store_info = OSSL_STORE_INFO_new_PKEY(pkey);
501 static FILE_HANDLER PUBKEY_handler = {
507 * Key parameter decoder.
509 static OSSL_STORE_INFO *try_decode_params(const char *pem_name,
510 const char *pem_header,
511 const unsigned char *blob,
512 size_t len, void **pctx,
514 const UI_METHOD *ui_method,
517 OSSL_STORE_INFO *store_info = NULL;
519 EVP_PKEY *pkey = NULL;
520 const EVP_PKEY_ASN1_METHOD *ameth = NULL;
523 if (pem_name != NULL) {
524 if ((slen = pem_check_suffix(pem_name, "PARAMETERS")) == 0)
530 if ((pkey = EVP_PKEY_new()) == NULL) {
531 OSSL_STOREerr(OSSL_STORE_F_TRY_DECODE_PARAMS, ERR_R_EVP_LIB);
536 if (EVP_PKEY_set_type_str(pkey, pem_name, slen)
537 && (ameth = EVP_PKEY_get0_asn1(pkey)) != NULL
538 && ameth->param_decode != NULL
539 && ameth->param_decode(pkey, &blob, len))
543 EVP_PKEY *tmp_pkey = NULL;
545 for (i = 0; i < EVP_PKEY_asn1_get_count(); i++) {
546 const unsigned char *tmp_blob = blob;
548 if (tmp_pkey == NULL && (tmp_pkey = EVP_PKEY_new()) == NULL) {
549 OSSL_STOREerr(OSSL_STORE_F_TRY_DECODE_PARAMS, ERR_R_EVP_LIB);
553 ameth = EVP_PKEY_asn1_get0(i);
554 if (ameth->pkey_flags & ASN1_PKEY_ALIAS)
557 if (EVP_PKEY_set_type(tmp_pkey, ameth->pkey_id)
558 && (ameth = EVP_PKEY_get0_asn1(tmp_pkey)) != NULL
559 && ameth->param_decode != NULL
560 && ameth->param_decode(tmp_pkey, &tmp_blob, len)) {
562 EVP_PKEY_free(tmp_pkey);
570 EVP_PKEY_free(tmp_pkey);
571 if (*matchcount == 1) {
577 store_info = OSSL_STORE_INFO_new_PARAMS(pkey);
578 if (store_info == NULL)
584 static FILE_HANDLER params_handler = {
590 * X.509 certificate decoder.
592 static OSSL_STORE_INFO *try_decode_X509Certificate(const char *pem_name,
593 const char *pem_header,
594 const unsigned char *blob,
595 size_t len, void **pctx,
597 const UI_METHOD *ui_method,
600 OSSL_STORE_INFO *store_info = NULL;
604 * In most cases, we can try to interpret the serialized data as a trusted
605 * cert (X509 + X509_AUX) and fall back to reading it as a normal cert
606 * (just X509), but if the PEM name specifically declares it as a trusted
607 * cert, then no fallback should be engaged. |ignore_trusted| tells if
608 * the fallback can be used (1) or not (0).
610 int ignore_trusted = 1;
612 if (pem_name != NULL) {
613 if (strcmp(pem_name, PEM_STRING_X509_TRUSTED) == 0)
615 else if (strcmp(pem_name, PEM_STRING_X509_OLD) != 0
616 && strcmp(pem_name, PEM_STRING_X509) != 0)
622 if ((cert = d2i_X509_AUX(NULL, &blob, len)) != NULL
623 || (ignore_trusted && (cert = d2i_X509(NULL, &blob, len)) != NULL)) {
625 store_info = OSSL_STORE_INFO_new_CERT(cert);
628 if (store_info == NULL)
634 static FILE_HANDLER X509Certificate_handler = {
636 try_decode_X509Certificate
642 static OSSL_STORE_INFO *try_decode_X509CRL(const char *pem_name,
643 const char *pem_header,
644 const unsigned char *blob,
645 size_t len, void **pctx,
647 const UI_METHOD *ui_method,
650 OSSL_STORE_INFO *store_info = NULL;
651 X509_CRL *crl = NULL;
653 if (pem_name != NULL) {
654 if (strcmp(pem_name, PEM_STRING_X509_CRL) != 0)
660 if ((crl = d2i_X509_CRL(NULL, &blob, len)) != NULL) {
662 store_info = OSSL_STORE_INFO_new_CRL(crl);
665 if (store_info == NULL)
671 static FILE_HANDLER X509CRL_handler = {
677 * To finish it all off, we collect all the handlers.
679 static const FILE_HANDLER *file_handlers[] = {
681 &PKCS8Encrypted_handler,
682 &X509Certificate_handler,
695 struct ossl_store_loader_ctx_st {
702 #define FILE_FLAG_SECMEM (1<<0)
705 struct { /* Used with is_raw and is_pem */
709 * The following are used when the handler is marked as
712 const FILE_HANDLER *last_handler;
713 void *last_handler_ctx;
715 struct { /* Used with is_dir */
716 OPENSSL_DIR_CTX *ctx;
721 * When a search expression is given, these are filled in.
722 * |search_name| contains the file basename to look for.
723 * The string is exactly 8 characters long.
728 * The directory reading utility we have combines opening with
729 * reading the first name. To make sure we can detect the end
730 * at the right time, we read early and cache the name.
732 const char *last_entry;
737 /* Expected object type. May be unspecified */
741 static void OSSL_STORE_LOADER_CTX_free(OSSL_STORE_LOADER_CTX *ctx)
743 if (ctx->type == is_dir) {
744 OPENSSL_free(ctx->_.dir.uri);
746 if (ctx->_.file.last_handler != NULL) {
747 ctx->_.file.last_handler->destroy_ctx(&ctx->_.file.last_handler_ctx);
748 ctx->_.file.last_handler_ctx = NULL;
749 ctx->_.file.last_handler = NULL;
755 static OSSL_STORE_LOADER_CTX *file_open(const OSSL_STORE_LOADER *loader,
757 const UI_METHOD *ui_method,
760 OSSL_STORE_LOADER_CTX *ctx = NULL;
764 unsigned int check_absolute:1;
766 size_t path_data_n = 0, i;
770 * First step, just take the URI as is.
772 path_data[path_data_n].check_absolute = 0;
773 path_data[path_data_n++].path = uri;
776 * Second step, if the URI appears to start with the 'file' scheme,
777 * extract the path and make that the second path to check.
778 * There's a special case if the URI also contains an authority, then
779 * the full URI shouldn't be used as a path anywhere.
781 if (strncasecmp(uri, "file:", 5) == 0) {
782 const char *p = &uri[5];
784 if (strncmp(&uri[5], "//", 2) == 0) {
785 path_data_n--; /* Invalidate using the full URI */
786 if (strncasecmp(&uri[7], "localhost/", 10) == 0) {
788 } else if (uri[7] == '/') {
791 OSSL_STOREerr(OSSL_STORE_F_FILE_OPEN,
792 OSSL_STORE_R_URI_AUTHORITY_UNSUPPORTED);
797 path_data[path_data_n].check_absolute = 1;
799 /* Windows file: URIs with a drive letter start with a / */
800 if (p[0] == '/' && p[2] == ':' && p[3] == '/') {
801 char c = ossl_tolower(p[1]);
803 if (c >= 'a' && c <= 'z') {
805 /* We know it's absolute, so no need to check */
806 path_data[path_data_n].check_absolute = 0;
810 path_data[path_data_n++].path = p;
814 for (i = 0, path = NULL; path == NULL && i < path_data_n; i++) {
816 * If the scheme "file" was an explicit part of the URI, the path must
817 * be absolute. So says RFC 8089
819 if (path_data[i].check_absolute && path_data[i].path[0] != '/') {
820 OSSL_STOREerr(OSSL_STORE_F_FILE_OPEN,
821 OSSL_STORE_R_PATH_MUST_BE_ABSOLUTE);
822 ERR_add_error_data(1, path_data[i].path);
826 if (stat(path_data[i].path, &st) < 0) {
827 FUNCerr("stat", errno);
828 ERR_add_error_data(1, path_data[i].path);
830 path = path_data[i].path;
837 /* Successfully found a working path, clear possible collected errors */
840 ctx = OPENSSL_zalloc(sizeof(*ctx));
842 OSSL_STOREerr(OSSL_STORE_F_FILE_OPEN, ERR_R_MALLOC_FAILURE);
846 if (S_ISDIR(st.st_mode)) {
848 * Try to copy everything, even if we know that some of them must be
849 * NULL for the moment. This prevents errors in the future, when more
850 * components may be used.
852 ctx->_.dir.uri = OPENSSL_strdup(uri);
855 if (ctx->_.dir.uri == NULL)
858 ctx->_.dir.last_entry = OPENSSL_DIR_read(&ctx->_.dir.ctx, path);
859 ctx->_.dir.last_errno = errno;
860 if (ctx->_.dir.last_entry == NULL) {
861 if (ctx->_.dir.last_errno != 0) {
863 OSSL_STOREerr(OSSL_STORE_F_FILE_OPEN, ERR_R_SYS_LIB);
864 errno = ctx->_.dir.last_errno;
865 if (openssl_strerror_r(errno, errbuf, sizeof(errbuf)))
866 ERR_add_error_data(1, errbuf);
869 ctx->_.dir.end_reached = 1;
873 char peekbuf[4096] = { 0, };
875 if ((buff = BIO_new(BIO_f_buffer())) == NULL
876 || (ctx->_.file.file = BIO_new_file(path, "rb")) == NULL) {
881 ctx->_.file.file = BIO_push(buff, ctx->_.file.file);
882 if (BIO_buffer_peek(ctx->_.file.file, peekbuf, sizeof(peekbuf) - 1) > 0) {
883 peekbuf[sizeof(peekbuf) - 1] = '\0';
884 if (strstr(peekbuf, "-----BEGIN ") != NULL)
891 OSSL_STORE_LOADER_CTX_free(ctx);
895 static int file_ctrl(OSSL_STORE_LOADER_CTX *ctx, int cmd, va_list args)
900 case OSSL_STORE_C_USE_SECMEM:
902 int on = *(va_arg(args, int *));
906 ctx->flags &= ~FILE_FLAG_SECMEM;
909 ctx->flags |= FILE_FLAG_SECMEM;
912 OSSL_STOREerr(OSSL_STORE_F_FILE_CTRL,
913 ERR_R_PASSED_INVALID_ARGUMENT);
926 static int file_expect(OSSL_STORE_LOADER_CTX *ctx, int expected)
928 ctx->expected_type = expected;
932 static int file_find(OSSL_STORE_LOADER_CTX *ctx, OSSL_STORE_SEARCH *search)
935 * If ctx == NULL, the library is looking to know if this loader supports
936 * the given search type.
939 if (OSSL_STORE_SEARCH_get_type(search) == OSSL_STORE_SEARCH_BY_NAME) {
940 unsigned long hash = 0;
945 if (ctx->type != is_dir) {
946 OSSL_STOREerr(OSSL_STORE_F_FILE_FIND,
947 OSSL_STORE_R_SEARCH_ONLY_SUPPORTED_FOR_DIRECTORIES);
951 hash = X509_NAME_hash(OSSL_STORE_SEARCH_get0_name(search));
952 BIO_snprintf(ctx->_.dir.search_name, sizeof(ctx->_.dir.search_name),
958 OSSL_STOREerr(OSSL_STORE_F_FILE_FIND,
959 OSSL_STORE_R_UNSUPPORTED_SEARCH_TYPE);
963 /* Internal function to decode an already opened PEM file */
964 OSSL_STORE_LOADER_CTX *ossl_store_file_attach_pem_bio_int(BIO *bp)
966 OSSL_STORE_LOADER_CTX *ctx = OPENSSL_zalloc(sizeof(*ctx));
969 OSSL_STOREerr(OSSL_STORE_F_OSSL_STORE_FILE_ATTACH_PEM_BIO_INT,
970 ERR_R_MALLOC_FAILURE);
974 ctx->_.file.file = bp;
980 static OSSL_STORE_INFO *file_load_try_decode(OSSL_STORE_LOADER_CTX *ctx,
981 const char *pem_name,
982 const char *pem_header,
983 unsigned char *data, size_t len,
984 const UI_METHOD *ui_method,
985 void *ui_data, int *matchcount)
987 OSSL_STORE_INFO *result = NULL;
988 BUF_MEM *new_mem = NULL;
989 char *new_pem_name = NULL;
995 void *handler_ctx = NULL;
996 const FILE_HANDLER **matching_handlers =
997 OPENSSL_zalloc(sizeof(*matching_handlers)
998 * OSSL_NELEM(file_handlers));
1000 if (matching_handlers == NULL) {
1001 OSSL_STOREerr(OSSL_STORE_F_FILE_LOAD_TRY_DECODE,
1002 ERR_R_MALLOC_FAILURE);
1007 for (i = 0; i < OSSL_NELEM(file_handlers); i++) {
1008 const FILE_HANDLER *handler = file_handlers[i];
1009 int try_matchcount = 0;
1010 void *tmp_handler_ctx = NULL;
1011 OSSL_STORE_INFO *tmp_result =
1012 handler->try_decode(pem_name, pem_header, data, len,
1013 &tmp_handler_ctx, &try_matchcount,
1014 ui_method, ui_data);
1016 if (try_matchcount > 0) {
1018 matching_handlers[*matchcount] = handler;
1021 handler->destroy_ctx(&handler_ctx);
1022 handler_ctx = tmp_handler_ctx;
1024 if ((*matchcount += try_matchcount) > 1) {
1025 /* more than one match => ambiguous, kill any result */
1026 OSSL_STORE_INFO_free(result);
1027 OSSL_STORE_INFO_free(tmp_result);
1028 if (handler->destroy_ctx != NULL)
1029 handler->destroy_ctx(&handler_ctx);
1035 result = tmp_result;
1039 if (*matchcount == 1 && matching_handlers[0]->repeatable) {
1040 ctx->_.file.last_handler = matching_handlers[0];
1041 ctx->_.file.last_handler_ctx = handler_ctx;
1044 OPENSSL_free(matching_handlers);
1048 OPENSSL_free(new_pem_name);
1049 BUF_MEM_free(new_mem);
1052 && (t = OSSL_STORE_INFO_get_type(result)) == OSSL_STORE_INFO_EMBEDDED) {
1053 pem_name = new_pem_name =
1054 ossl_store_info_get0_EMBEDDED_pem_name(result);
1055 new_mem = ossl_store_info_get0_EMBEDDED_buffer(result);
1056 data = (unsigned char *)new_mem->data;
1057 len = new_mem->length;
1058 OPENSSL_free(result);
1069 static OSSL_STORE_INFO *file_load_try_repeat(OSSL_STORE_LOADER_CTX *ctx,
1070 const UI_METHOD *ui_method,
1073 OSSL_STORE_INFO *result = NULL;
1074 int try_matchcount = 0;
1076 if (ctx->_.file.last_handler != NULL) {
1078 ctx->_.file.last_handler->try_decode(NULL, NULL, NULL, 0,
1079 &ctx->_.file.last_handler_ctx,
1081 ui_method, ui_data);
1083 if (result == NULL) {
1084 ctx->_.file.last_handler->destroy_ctx(&ctx->_.file.last_handler_ctx);
1085 ctx->_.file.last_handler_ctx = NULL;
1086 ctx->_.file.last_handler = NULL;
1092 static void pem_free_flag(void *pem_data, int secure, size_t num)
1095 OPENSSL_secure_clear_free(pem_data, num);
1097 OPENSSL_free(pem_data);
1099 static int file_read_pem(BIO *bp, char **pem_name, char **pem_header,
1100 unsigned char **data, long *len,
1101 const UI_METHOD *ui_method,
1102 void *ui_data, int secure)
1105 ? PEM_read_bio_ex(bp, pem_name, pem_header, data, len,
1106 PEM_FLAG_SECURE | PEM_FLAG_EAY_COMPATIBLE)
1107 : PEM_read_bio(bp, pem_name, pem_header, data, len);
1113 * 10 is the number of characters in "Proc-Type:", which
1114 * PEM_get_EVP_CIPHER_INFO() requires to be present.
1115 * If the PEM header has less characters than that, it's
1116 * not worth spending cycles on it.
1118 if (strlen(*pem_header) > 10) {
1119 EVP_CIPHER_INFO cipher;
1120 struct pem_pass_data pass_data;
1122 if (!PEM_get_EVP_CIPHER_INFO(*pem_header, &cipher)
1123 || !file_fill_pem_pass_data(&pass_data, "PEM", ui_method, ui_data)
1124 || !PEM_do_header(&cipher, *data, len, file_get_pem_pass,
1132 static int file_read_asn1(BIO *bp, unsigned char **data, long *len)
1134 BUF_MEM *mem = NULL;
1136 if (asn1_d2i_read_bio(bp, &mem) < 0)
1139 *data = (unsigned char *)mem->data;
1140 *len = (long)mem->length;
1146 static int ends_with_dirsep(const char *uri)
1149 uri += strlen(uri) - 1;
1151 if (*uri == ']' || *uri == '>' || *uri == ':')
1153 #elif defined _WIN32
1160 static int file_name_to_uri(OSSL_STORE_LOADER_CTX *ctx, const char *name,
1163 assert(name != NULL);
1164 assert(data != NULL);
1166 const char *pathsep = ends_with_dirsep(ctx->_.dir.uri) ? "" : "/";
1167 long calculated_length = strlen(ctx->_.dir.uri) + strlen(pathsep)
1168 + strlen(name) + 1 /* \0 */;
1170 *data = OPENSSL_zalloc(calculated_length);
1171 if (*data == NULL) {
1172 OSSL_STOREerr(OSSL_STORE_F_FILE_NAME_TO_URI, ERR_R_MALLOC_FAILURE);
1176 OPENSSL_strlcat(*data, ctx->_.dir.uri, calculated_length);
1177 OPENSSL_strlcat(*data, pathsep, calculated_length);
1178 OPENSSL_strlcat(*data, name, calculated_length);
1183 static int file_name_check(OSSL_STORE_LOADER_CTX *ctx, const char *name)
1185 const char *p = NULL;
1187 /* If there are no search criteria, all names are accepted */
1188 if (ctx->_.dir.search_name[0] == '\0')
1191 /* If the expected type isn't supported, no name is accepted */
1192 if (ctx->expected_type != 0
1193 && ctx->expected_type != OSSL_STORE_INFO_CERT
1194 && ctx->expected_type != OSSL_STORE_INFO_CRL)
1198 * First, check the basename
1200 if (strncasecmp(name, ctx->_.dir.search_name,
1201 sizeof(ctx->_.dir.search_name) - 1) != 0
1202 || name[sizeof(ctx->_.dir.search_name) - 1] != '.')
1204 p = &name[sizeof(ctx->_.dir.search_name)];
1207 * Then, if the expected type is a CRL, check that the extension starts
1212 if (ctx->expected_type != 0
1213 && ctx->expected_type != OSSL_STORE_INFO_CRL)
1215 } else if (ctx->expected_type == OSSL_STORE_INFO_CRL) {
1220 * Last, check that the rest of the extension is a decimal number, at
1221 * least one digit long.
1223 if (!ossl_isdigit(*p))
1225 while (ossl_isdigit(*p))
1230 * One extra step here, check for a possible generation number.
1233 for (p++; *p != '\0'; p++)
1234 if (!ossl_isdigit(*p))
1239 * If we've reached the end of the string at this point, we've successfully
1240 * found a fitting file name.
1245 static int file_eof(OSSL_STORE_LOADER_CTX *ctx);
1246 static int file_error(OSSL_STORE_LOADER_CTX *ctx);
1247 static OSSL_STORE_INFO *file_load(OSSL_STORE_LOADER_CTX *ctx,
1248 const UI_METHOD *ui_method, void *ui_data)
1250 OSSL_STORE_INFO *result = NULL;
1255 if (ctx->type == is_dir) {
1257 char *newname = NULL;
1259 if (ctx->_.dir.last_entry == NULL) {
1260 if (!ctx->_.dir.end_reached) {
1262 assert(ctx->_.dir.last_errno != 0);
1263 OSSL_STOREerr(OSSL_STORE_F_FILE_LOAD, ERR_R_SYS_LIB);
1264 errno = ctx->_.dir.last_errno;
1266 if (openssl_strerror_r(errno, errbuf, sizeof(errbuf)))
1267 ERR_add_error_data(1, errbuf);
1272 if (ctx->_.dir.last_entry[0] != '.'
1273 && file_name_check(ctx, ctx->_.dir.last_entry)
1274 && !file_name_to_uri(ctx, ctx->_.dir.last_entry, &newname))
1278 * On the first call (with a NULL context), OPENSSL_DIR_read()
1279 * cares about the second argument. On the following calls, it
1280 * only cares that it isn't NULL. Therefore, we can safely give
1283 ctx->_.dir.last_entry = OPENSSL_DIR_read(&ctx->_.dir.ctx,
1285 ctx->_.dir.last_errno = errno;
1286 if (ctx->_.dir.last_entry == NULL && ctx->_.dir.last_errno == 0)
1287 ctx->_.dir.end_reached = 1;
1290 && (result = OSSL_STORE_INFO_new_NAME(newname)) == NULL) {
1291 OPENSSL_free(newname);
1292 OSSL_STOREerr(OSSL_STORE_F_FILE_LOAD, ERR_R_OSSL_STORE_LIB);
1295 } while (result == NULL && !file_eof(ctx));
1297 int matchcount = -1;
1300 result = file_load_try_repeat(ctx, ui_method, ui_data);
1308 char *pem_name = NULL; /* PEM record name */
1309 char *pem_header = NULL; /* PEM record header */
1310 unsigned char *data = NULL; /* DER encoded data */
1311 long len = 0; /* DER encoded data length */
1314 if (ctx->type == is_pem) {
1315 if (!file_read_pem(ctx->_.file.file, &pem_name, &pem_header,
1316 &data, &len, ui_method, ui_data,
1317 (ctx->flags & FILE_FLAG_SECMEM) != 0)) {
1322 if (!file_read_asn1(ctx->_.file.file, &data, &len)) {
1328 result = file_load_try_decode(ctx, pem_name, pem_header, data, len,
1329 ui_method, ui_data, &matchcount);
1335 * If a PEM name matches more than one handler, the handlers are
1338 if (!ossl_assert(pem_name == NULL || matchcount <= 1)) {
1343 if (matchcount > 1) {
1344 OSSL_STOREerr(OSSL_STORE_F_FILE_LOAD,
1345 OSSL_STORE_R_AMBIGUOUS_CONTENT_TYPE);
1346 } else if (matchcount == 1) {
1348 * If there are other errors on the stack, they already show
1349 * what the problem is.
1351 if (ERR_peek_error() == 0) {
1352 OSSL_STOREerr(OSSL_STORE_F_FILE_LOAD,
1353 OSSL_STORE_R_UNSUPPORTED_CONTENT_TYPE);
1354 if (pem_name != NULL)
1355 ERR_add_error_data(3, "PEM type is '", pem_name, "'");
1362 pem_free_flag(pem_name, (ctx->flags & FILE_FLAG_SECMEM) != 0, 0);
1363 pem_free_flag(pem_header, (ctx->flags & FILE_FLAG_SECMEM) != 0, 0);
1364 pem_free_flag(data, (ctx->flags & FILE_FLAG_SECMEM) != 0, len);
1365 } while (matchcount == 0 && !file_eof(ctx) && !file_error(ctx));
1367 /* We bail out on ambiguity */
1372 && ctx->expected_type != 0
1373 && ctx->expected_type != OSSL_STORE_INFO_get_type(result)) {
1374 OSSL_STORE_INFO_free(result);
1382 static int file_error(OSSL_STORE_LOADER_CTX *ctx)
1384 return ctx->errcnt > 0;
1387 static int file_eof(OSSL_STORE_LOADER_CTX *ctx)
1389 if (ctx->type == is_dir)
1390 return ctx->_.dir.end_reached;
1392 if (ctx->_.file.last_handler != NULL
1393 && !ctx->_.file.last_handler->eof(ctx->_.file.last_handler_ctx))
1395 return BIO_eof(ctx->_.file.file);
1398 static int file_close(OSSL_STORE_LOADER_CTX *ctx)
1400 if (ctx->type == is_dir) {
1401 OPENSSL_DIR_end(&ctx->_.dir.ctx);
1403 BIO_free_all(ctx->_.file.file);
1405 OSSL_STORE_LOADER_CTX_free(ctx);
1409 int ossl_store_file_detach_pem_bio_int(OSSL_STORE_LOADER_CTX *ctx)
1411 OSSL_STORE_LOADER_CTX_free(ctx);
1415 static OSSL_STORE_LOADER file_loader =
1429 static void store_file_loader_deinit(void)
1431 ossl_store_unregister_loader_int(file_loader.scheme);
1434 int ossl_store_file_loader_init(void)
1436 int ret = ossl_store_register_loader_int(&file_loader);
1438 OPENSSL_atexit(store_file_loader_deinit);