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 "internal/store_int.h"
29 #include "store_locl.h"
38 static char *file_get_pass(const UI_METHOD *ui_method, char *pass,
39 size_t maxsize, const char *prompt_info, void *data)
45 OSSL_STOREerr(OSSL_STORE_F_FILE_GET_PASS, ERR_R_MALLOC_FAILURE);
49 if (ui_method != NULL)
50 UI_set_method(ui, ui_method);
51 UI_add_user_data(ui, data);
53 if ((prompt = UI_construct_prompt(ui, "pass phrase",
54 prompt_info)) == NULL) {
55 OSSL_STOREerr(OSSL_STORE_F_FILE_GET_PASS, ERR_R_MALLOC_FAILURE);
57 } else if (!UI_add_input_string(ui, prompt, UI_INPUT_FLAG_DEFAULT_PWD,
58 pass, 0, maxsize - 1)) {
59 OSSL_STOREerr(OSSL_STORE_F_FILE_GET_PASS, ERR_R_UI_LIB);
62 switch (UI_process(ui)) {
64 OSSL_STOREerr(OSSL_STORE_F_FILE_GET_PASS,
65 OSSL_STORE_R_UI_PROCESS_INTERRUPTED_OR_CANCELLED);
69 OSSL_STOREerr(OSSL_STORE_F_FILE_GET_PASS, ERR_R_UI_LIB);
82 struct pem_pass_data {
83 const UI_METHOD *ui_method;
85 const char *prompt_info;
88 static int file_fill_pem_pass_data(struct pem_pass_data *pass_data,
89 const char *prompt_info,
90 const UI_METHOD *ui_method, void *ui_data)
92 if (pass_data == NULL)
94 pass_data->ui_method = ui_method;
95 pass_data->data = ui_data;
96 pass_data->prompt_info = prompt_info;
100 /* This is used anywhere a pem_password_cb is needed */
101 static int file_get_pem_pass(char *buf, int num, int w, void *data)
103 struct pem_pass_data *pass_data = data;
104 char *pass = file_get_pass(pass_data->ui_method, buf, num,
105 pass_data->prompt_info, pass_data->data);
107 return pass == NULL ? 0 : strlen(pass);
111 * The file scheme decoders
112 * ------------------------
114 * Each possible data type has its own decoder, which either operates
115 * through a given PEM name, or attempts to decode to see if the blob
116 * it's given is decodable for its data type. The assumption is that
117 * only the correct data type will match the content.
121 * The try_decode function is called to check if the blob of data can
122 * be used by this handler, and if it can, decodes it into a supported
123 * OpenSSL type and returns a OSSL_STORE_INFO with the decoded data.
125 * pem_name: If this blob comes from a PEM file, this holds
126 * the PEM name. If it comes from another type of
127 * file, this is NULL.
128 * pem_header: If this blob comes from a PEM file, this holds
129 * the PEM headers. If it comes from another type of
130 * file, this is NULL.
131 * blob: The blob of data to match with what this handler
133 * len: The length of the blob.
134 * handler_ctx: For a handler marked repeatable, this pointer can
135 * be used to create a context for the handler. IT IS
136 * THE HANDLER'S RESPONSIBILITY TO CREATE AND DESTROY
137 * THIS CONTEXT APPROPRIATELY, i.e. create on first call
138 * and destroy when about to return NULL.
139 * matchcount: A pointer to an int to count matches for this data.
140 * Usually becomes 0 (no match) or 1 (match!), but may
141 * be higher in the (unlikely) event that the data matches
142 * more than one possibility. The int will always be
143 * zero when the function is called.
144 * ui_method: Application UI method for getting a password, pin
145 * or any other interactive data.
146 * ui_data: Application data to be passed to ui_method when
151 typedef OSSL_STORE_INFO *(*file_try_decode_fn)(const char *pem_name,
152 const char *pem_header,
153 const unsigned char *blob,
154 size_t len, void **handler_ctx,
156 const UI_METHOD *ui_method,
159 * The eof function should return 1 if there's no more data to be found
160 * with the handler_ctx, otherwise 0. This is only used when the handler is
163 typedef int (*file_eof_fn)(void *handler_ctx);
165 * The destroy_ctx function is used to destroy the handler_ctx that was
166 * intiated by a repeatable try_decode fuction. This is only used when
167 * the handler is marked repeatable.
169 typedef void (*file_destroy_ctx_fn)(void **handler_ctx);
171 typedef struct file_handler_st {
173 file_try_decode_fn try_decode;
175 file_destroy_ctx_fn destroy_ctx;
182 * PKCS#12 decoder. It operates by decoding all of the blob content,
183 * extracting all the interesting data from it and storing them internally,
184 * then serving them one piece at a time.
186 static OSSL_STORE_INFO *try_decode_PKCS12(const char *pem_name,
187 const char *pem_header,
188 const unsigned char *blob,
189 size_t len, void **pctx,
191 const UI_METHOD *ui_method,
194 OSSL_STORE_INFO *store_info = NULL;
195 STACK_OF(OSSL_STORE_INFO) *ctx = *pctx;
198 /* Initial parsing */
202 if (pem_name != NULL)
203 /* No match, there is no PEM PKCS12 tag */
206 if ((p12 = d2i_PKCS12(NULL, &blob, len)) != NULL) {
208 char tpass[PEM_BUFSIZE];
209 EVP_PKEY *pkey = NULL;
211 STACK_OF(X509) *chain = NULL;
215 if (PKCS12_verify_mac(p12, "", 0)
216 || PKCS12_verify_mac(p12, NULL, 0)) {
219 if ((pass = file_get_pass(ui_method, tpass, PEM_BUFSIZE,
220 "PKCS12 import password",
222 OSSL_STOREerr(OSSL_STORE_F_TRY_DECODE_PKCS12,
223 OSSL_STORE_R_PASSPHRASE_CALLBACK_ERROR);
226 if (!PKCS12_verify_mac(p12, pass, strlen(pass))) {
227 OSSL_STOREerr(OSSL_STORE_F_TRY_DECODE_PKCS12,
228 OSSL_STORE_R_ERROR_VERIFYING_PKCS12_MAC);
233 if (PKCS12_parse(p12, pass, &pkey, &cert, &chain)) {
234 OSSL_STORE_INFO *si_pkey = NULL;
235 OSSL_STORE_INFO *si_cert = NULL;
236 OSSL_STORE_INFO *si_ca = NULL;
238 if ((ctx = sk_OSSL_STORE_INFO_new_null()) != NULL
239 && (si_pkey = OSSL_STORE_INFO_new_PKEY(pkey)) != NULL
240 && sk_OSSL_STORE_INFO_push(ctx, si_pkey) != 0
241 && (si_cert = OSSL_STORE_INFO_new_CERT(cert)) != NULL
242 && sk_OSSL_STORE_INFO_push(ctx, si_cert) != 0) {
247 while(sk_X509_num(chain) > 0) {
248 X509 *ca = sk_X509_value(chain, 0);
250 if ((si_ca = OSSL_STORE_INFO_new_CERT(ca)) == NULL
251 || sk_OSSL_STORE_INFO_push(ctx, si_ca) == 0) {
256 (void)sk_X509_shift(chain);
260 OSSL_STORE_INFO_free(si_ca);
261 OSSL_STORE_INFO_free(si_cert);
262 OSSL_STORE_INFO_free(si_pkey);
263 sk_OSSL_STORE_INFO_pop_free(ctx, OSSL_STORE_INFO_free);
266 sk_X509_pop_free(chain, X509_free);
280 store_info = sk_OSSL_STORE_INFO_shift(ctx);
286 static int eof_PKCS12(void *ctx_)
288 STACK_OF(OSSL_STORE_INFO) *ctx = ctx_;
290 return ctx == NULL || sk_OSSL_STORE_INFO_num(ctx) == 0;
293 static void destroy_ctx_PKCS12(void **pctx)
295 STACK_OF(OSSL_STORE_INFO) *ctx = *pctx;
297 sk_OSSL_STORE_INFO_pop_free(ctx, OSSL_STORE_INFO_free);
301 static FILE_HANDLER PKCS12_handler = {
310 * Encrypted PKCS#8 decoder. It operates by just decrypting the given blob
311 * into a new blob, which is returned as an EMBEDDED STORE_INFO. The whole
312 * decoding process will then start over with the new blob.
314 static OSSL_STORE_INFO *try_decode_PKCS8Encrypted(const char *pem_name,
315 const char *pem_header,
316 const unsigned char *blob,
317 size_t len, void **pctx,
319 const UI_METHOD *ui_method,
323 char kbuf[PEM_BUFSIZE];
325 const X509_ALGOR *dalg = NULL;
326 const ASN1_OCTET_STRING *doct = NULL;
327 OSSL_STORE_INFO *store_info = NULL;
329 unsigned char *new_data = NULL;
332 if (pem_name != NULL) {
333 if (strcmp(pem_name, PEM_STRING_PKCS8) != 0)
338 if ((p8 = d2i_X509_SIG(NULL, &blob, len)) == NULL)
343 if ((mem = BUF_MEM_new()) == NULL) {
344 OSSL_STOREerr(OSSL_STORE_F_TRY_DECODE_PKCS8ENCRYPTED,
345 ERR_R_MALLOC_FAILURE);
349 if ((pass = file_get_pass(ui_method, kbuf, PEM_BUFSIZE,
350 "PKCS8 decrypt password", ui_data)) == NULL) {
351 OSSL_STOREerr(OSSL_STORE_F_TRY_DECODE_PKCS8ENCRYPTED,
352 OSSL_STORE_R_BAD_PASSWORD_READ);
356 X509_SIG_get0(p8, &dalg, &doct);
357 if (!PKCS12_pbe_crypt(dalg, pass, strlen(pass), doct->data, doct->length,
358 &new_data, &new_data_len, 0))
361 mem->data = (char *)new_data;
362 mem->max = mem->length = (size_t)new_data_len;
365 store_info = ossl_store_info_new_EMBEDDED(PEM_STRING_PKCS8INF, mem);
366 if (store_info == NULL) {
367 OSSL_STOREerr(OSSL_STORE_F_TRY_DECODE_PKCS8ENCRYPTED,
368 ERR_R_MALLOC_FAILURE);
379 static FILE_HANDLER PKCS8Encrypted_handler = {
381 try_decode_PKCS8Encrypted
385 * Private key decoder. Decodes all sorts of private keys, both PKCS#8
386 * encoded ones and old style PEM ones (with the key type is encoded into
389 int pem_check_suffix(const char *pem_str, const char *suffix);
390 static OSSL_STORE_INFO *try_decode_PrivateKey(const char *pem_name,
391 const char *pem_header,
392 const unsigned char *blob,
393 size_t len, void **pctx,
395 const UI_METHOD *ui_method,
398 OSSL_STORE_INFO *store_info = NULL;
399 EVP_PKEY *pkey = NULL;
400 const EVP_PKEY_ASN1_METHOD *ameth = NULL;
402 if (pem_name != NULL) {
403 if (strcmp(pem_name, PEM_STRING_PKCS8INF) == 0) {
404 PKCS8_PRIV_KEY_INFO *p8inf =
405 d2i_PKCS8_PRIV_KEY_INFO(NULL, &blob, len);
409 pkey = EVP_PKCS82PKEY(p8inf);
410 PKCS8_PRIV_KEY_INFO_free(p8inf);
414 if ((slen = pem_check_suffix(pem_name, "PRIVATE KEY")) > 0
415 && (ameth = EVP_PKEY_asn1_find_str(NULL, pem_name,
418 pkey = d2i_PrivateKey(ameth->pkey_id, NULL, &blob, len);
424 for (i = 0; i < EVP_PKEY_asn1_get_count(); i++) {
425 EVP_PKEY *tmp_pkey = NULL;
426 const unsigned char *tmp_blob = blob;
428 ameth = EVP_PKEY_asn1_get0(i);
429 if (ameth->pkey_flags & ASN1_PKEY_ALIAS)
432 tmp_pkey = d2i_PrivateKey(ameth->pkey_id, NULL, &tmp_blob, len);
433 if (tmp_pkey != NULL) {
435 EVP_PKEY_free(tmp_pkey);
442 if (*matchcount > 1) {
451 store_info = OSSL_STORE_INFO_new_PKEY(pkey);
452 if (store_info == NULL)
458 static FILE_HANDLER PrivateKey_handler = {
460 try_decode_PrivateKey
464 * Public key decoder. Only supports SubjectPublicKeyInfo formated keys.
466 static OSSL_STORE_INFO *try_decode_PUBKEY(const char *pem_name,
467 const char *pem_header,
468 const unsigned char *blob,
469 size_t len, void **pctx,
471 const UI_METHOD *ui_method,
474 OSSL_STORE_INFO *store_info = NULL;
475 EVP_PKEY *pkey = NULL;
477 if (pem_name != NULL) {
478 if (strcmp(pem_name, PEM_STRING_PUBLIC) != 0)
484 if ((pkey = d2i_PUBKEY(NULL, &blob, len)) != NULL) {
486 store_info = OSSL_STORE_INFO_new_PKEY(pkey);
492 static FILE_HANDLER PUBKEY_handler = {
498 * Key parameter decoder.
500 static OSSL_STORE_INFO *try_decode_params(const char *pem_name,
501 const char *pem_header,
502 const unsigned char *blob,
503 size_t len, void **pctx,
505 const UI_METHOD *ui_method,
508 OSSL_STORE_INFO *store_info = NULL;
510 EVP_PKEY *pkey = NULL;
511 const EVP_PKEY_ASN1_METHOD *ameth = NULL;
514 if (pem_name != NULL) {
515 if ((slen = pem_check_suffix(pem_name, "PARAMETERS")) == 0)
521 if ((pkey = EVP_PKEY_new()) == NULL) {
522 OSSL_STOREerr(OSSL_STORE_F_TRY_DECODE_PARAMS, ERR_R_EVP_LIB);
527 if (EVP_PKEY_set_type_str(pkey, pem_name, slen)
528 && (ameth = EVP_PKEY_get0_asn1(pkey)) != NULL
529 && ameth->param_decode != NULL
530 && ameth->param_decode(pkey, &blob, len))
534 EVP_PKEY *tmp_pkey = NULL;
536 for (i = 0; i < EVP_PKEY_asn1_get_count(); i++) {
537 const unsigned char *tmp_blob = blob;
539 if (tmp_pkey == NULL && (tmp_pkey = EVP_PKEY_new()) == NULL) {
540 OSSL_STOREerr(OSSL_STORE_F_TRY_DECODE_PARAMS, ERR_R_EVP_LIB);
544 ameth = EVP_PKEY_asn1_get0(i);
545 if (ameth->pkey_flags & ASN1_PKEY_ALIAS)
548 if (EVP_PKEY_set_type(tmp_pkey, ameth->pkey_id)
549 && (ameth = EVP_PKEY_get0_asn1(tmp_pkey)) != NULL
550 && ameth->param_decode != NULL
551 && ameth->param_decode(tmp_pkey, &tmp_blob, len)) {
553 EVP_PKEY_free(tmp_pkey);
561 EVP_PKEY_free(tmp_pkey);
562 if (*matchcount == 1) {
568 store_info = OSSL_STORE_INFO_new_PARAMS(pkey);
569 if (store_info == NULL)
575 static FILE_HANDLER params_handler = {
581 * X.509 certificate decoder.
583 static OSSL_STORE_INFO *try_decode_X509Certificate(const char *pem_name,
584 const char *pem_header,
585 const unsigned char *blob,
586 size_t len, void **pctx,
588 const UI_METHOD *ui_method,
591 OSSL_STORE_INFO *store_info = NULL;
595 * In most cases, we can try to interpret the serialized data as a trusted
596 * cert (X509 + X509_AUX) and fall back to reading it as a normal cert
597 * (just X509), but if the PEM name specifically declares it as a trusted
598 * cert, then no fallback should be engaged. |ignore_trusted| tells if
599 * the fallback can be used (1) or not (0).
601 int ignore_trusted = 1;
603 if (pem_name != NULL) {
604 if (strcmp(pem_name, PEM_STRING_X509_TRUSTED) == 0)
606 else if (strcmp(pem_name, PEM_STRING_X509_OLD) != 0
607 && strcmp(pem_name, PEM_STRING_X509) != 0)
613 if ((cert = d2i_X509_AUX(NULL, &blob, len)) != NULL
614 || (ignore_trusted && (cert = d2i_X509(NULL, &blob, len)) != NULL)) {
616 store_info = OSSL_STORE_INFO_new_CERT(cert);
619 if (store_info == NULL)
625 static FILE_HANDLER X509Certificate_handler = {
627 try_decode_X509Certificate
633 static OSSL_STORE_INFO *try_decode_X509CRL(const char *pem_name,
634 const char *pem_header,
635 const unsigned char *blob,
636 size_t len, void **pctx,
638 const UI_METHOD *ui_method,
641 OSSL_STORE_INFO *store_info = NULL;
642 X509_CRL *crl = NULL;
644 if (pem_name != NULL) {
645 if (strcmp(pem_name, PEM_STRING_X509_CRL) != 0)
651 if ((crl = d2i_X509_CRL(NULL, &blob, len)) != NULL) {
653 store_info = OSSL_STORE_INFO_new_CRL(crl);
656 if (store_info == NULL)
662 static FILE_HANDLER X509CRL_handler = {
668 * To finish it all off, we collect all the handlers.
670 static const FILE_HANDLER *file_handlers[] = {
672 &PKCS8Encrypted_handler,
673 &X509Certificate_handler,
686 struct ossl_store_loader_ctx_st {
693 #define FILE_FLAG_SECMEM (1<<0)
696 struct { /* Used with is_raw and is_pem */
700 * The following are used when the handler is marked as
703 const FILE_HANDLER *last_handler;
704 void *last_handler_ctx;
706 struct { /* Used with is_dir */
707 OPENSSL_DIR_CTX *ctx;
712 * The directory reading utility we have combines opening with
713 * reading the first name. To make sure we can detect the end
714 * at the right time, we read early and cache the name.
716 const char *last_entry;
722 static void OSSL_STORE_LOADER_CTX_free(OSSL_STORE_LOADER_CTX *ctx)
724 if (ctx->type == is_dir) {
725 OPENSSL_free(ctx->_.dir.uri);
727 if (ctx->_.file.last_handler != NULL) {
728 ctx->_.file.last_handler->destroy_ctx(&ctx->_.file.last_handler_ctx);
729 ctx->_.file.last_handler_ctx = NULL;
730 ctx->_.file.last_handler = NULL;
736 static OSSL_STORE_LOADER_CTX *file_open(const OSSL_STORE_LOADER *loader,
738 const UI_METHOD *ui_method,
741 OSSL_STORE_LOADER_CTX *ctx = NULL;
743 const char *path = NULL;
745 if (strncasecmp(uri, "file:", 5) == 0) {
746 if (strncasecmp(&uri[5], "//localhost/", 12) == 0) {
748 } else if (strncmp(&uri[5], "///", 3) == 0) {
750 } else if (strncmp(&uri[5], "//", 2) != 0) {
753 OSSL_STOREerr(OSSL_STORE_F_FILE_OPEN,
754 OSSL_STORE_R_URI_AUTHORITY_UNSUPPORED);
759 * If the scheme "file" was an explicit part of the URI, the path must
760 * be absolute. So says RFC 8089
762 if (path[0] != '/') {
763 OSSL_STOREerr(OSSL_STORE_F_FILE_OPEN,
764 OSSL_STORE_R_PATH_MUST_BE_ABSOLUTE);
769 /* Windows file: URIs with a drive letter start with a / */
770 if (path[0] == '/' && path[2] == ':' && path[3] == '/')
778 if (stat(path, &st) < 0) {
779 SYSerr(SYS_F_STAT, errno);
780 ERR_add_error_data(1, path);
784 ctx = OPENSSL_zalloc(sizeof(*ctx));
786 OSSL_STOREerr(OSSL_STORE_F_FILE_OPEN, ERR_R_MALLOC_FAILURE);
790 if ((st.st_mode & S_IFDIR) == S_IFDIR) {
792 * Try to copy everything, even if we know that some of them must be
793 * NULL for the moment. This prevents errors in the future, when more
794 * components may be used.
796 ctx->_.dir.uri = OPENSSL_strdup(uri);
799 if (ctx->_.dir.uri == NULL)
802 ctx->_.dir.last_entry = OPENSSL_DIR_read(&ctx->_.dir.ctx, path);
803 ctx->_.dir.last_errno = errno;
804 if (ctx->_.dir.last_entry == NULL) {
805 if (ctx->_.dir.last_errno != 0) {
807 errno = ctx->_.dir.last_errno;
808 openssl_strerror_r(errno, errbuf, sizeof(errbuf));
809 OSSL_STOREerr(OSSL_STORE_F_FILE_OPEN, ERR_R_SYS_LIB);
810 ERR_add_error_data(1, errbuf);
813 ctx->_.dir.end_reached = 1;
819 if ((buff = BIO_new(BIO_f_buffer())) == NULL
820 || (ctx->_.file.file = BIO_new_file(path, "rb")) == NULL) {
825 ctx->_.file.file = BIO_push(buff, ctx->_.file.file);
826 if (BIO_buffer_peek(ctx->_.file.file, peekbuf, sizeof(peekbuf)-1) > 0) {
827 peekbuf[sizeof(peekbuf)-1] = '\0';
828 if (strstr(peekbuf, "-----BEGIN ") != NULL)
835 OSSL_STORE_LOADER_CTX_free(ctx);
839 static int file_ctrl(OSSL_STORE_LOADER_CTX *ctx, int cmd, va_list args)
844 case OSSL_STORE_C_USE_SECMEM:
846 int on = *(va_arg(args, int *));
850 ctx->flags &= ~FILE_FLAG_SECMEM;
853 ctx->flags |= FILE_FLAG_SECMEM;
856 OSSL_STOREerr(OSSL_STORE_F_FILE_CTRL,
857 ERR_R_PASSED_INVALID_ARGUMENT);
870 /* Internal function to decode an already opened PEM file */
871 OSSL_STORE_LOADER_CTX *ossl_store_file_attach_pem_bio_int(BIO *bp)
873 OSSL_STORE_LOADER_CTX *ctx = OPENSSL_zalloc(sizeof(*ctx));
876 OSSL_STOREerr(OSSL_STORE_F_OSSL_STORE_FILE_ATTACH_PEM_BIO_INT,
877 ERR_R_MALLOC_FAILURE);
881 ctx->_.file.file = bp;
887 static OSSL_STORE_INFO *file_load_try_decode(OSSL_STORE_LOADER_CTX *ctx,
888 const char *pem_name,
889 const char *pem_header,
890 unsigned char *data, size_t len,
891 const UI_METHOD *ui_method,
892 void *ui_data, int *matchcount)
894 OSSL_STORE_INFO *result = NULL;
895 BUF_MEM *new_mem = NULL;
896 char *new_pem_name = NULL;
902 void *handler_ctx = NULL;
903 const FILE_HANDLER **matching_handlers =
904 OPENSSL_zalloc(sizeof(*matching_handlers)
905 * OSSL_NELEM(file_handlers));
907 if (matching_handlers == NULL) {
908 OSSL_STOREerr(OSSL_STORE_F_FILE_LOAD_TRY_DECODE,
909 ERR_R_MALLOC_FAILURE);
914 for (i = 0; i < OSSL_NELEM(file_handlers); i++) {
915 const FILE_HANDLER *handler = file_handlers[i];
916 int try_matchcount = 0;
917 void *tmp_handler_ctx = NULL;
918 OSSL_STORE_INFO *tmp_result =
919 handler->try_decode(pem_name, pem_header, data, len,
920 &tmp_handler_ctx, &try_matchcount,
923 if (try_matchcount > 0) {
924 if (matching_handlers)
925 matching_handlers[*matchcount] = handler;
928 handler->destroy_ctx(&handler_ctx);
929 handler_ctx = tmp_handler_ctx;
931 if ((*matchcount += try_matchcount) > 1) {
932 /* more than one match => ambiguous, kill any result */
933 OSSL_STORE_INFO_free(result);
934 OSSL_STORE_INFO_free(tmp_result);
935 if (handler->destroy_ctx != NULL)
936 handler->destroy_ctx(&handler_ctx);
946 if (*matchcount == 1 && matching_handlers[0]->repeatable) {
947 ctx->_.file.last_handler = matching_handlers[0];
948 ctx->_.file.last_handler_ctx = handler_ctx;
951 OPENSSL_free(matching_handlers);
955 OPENSSL_free(new_pem_name);
956 BUF_MEM_free(new_mem);
959 && (t = OSSL_STORE_INFO_get_type(result)) == OSSL_STORE_INFO_EMBEDDED) {
960 pem_name = new_pem_name =
961 ossl_store_info_get0_EMBEDDED_pem_name(result);
962 new_mem = ossl_store_info_get0_EMBEDDED_buffer(result);
963 data = (unsigned char *)new_mem->data;
964 len = new_mem->length;
965 OPENSSL_free(result);
976 static OSSL_STORE_INFO *file_load_try_repeat(OSSL_STORE_LOADER_CTX *ctx,
977 const UI_METHOD *ui_method,
980 OSSL_STORE_INFO *result = NULL;
981 int try_matchcount = 0;
983 if (ctx->_.file.last_handler != NULL) {
985 ctx->_.file.last_handler->try_decode(NULL, NULL, NULL, 0,
986 &ctx->_.file.last_handler_ctx,
990 if (result == NULL) {
991 ctx->_.file.last_handler->destroy_ctx(&ctx->_.file.last_handler_ctx);
992 ctx->_.file.last_handler_ctx = NULL;
993 ctx->_.file.last_handler = NULL;
999 static void pem_free_flag(void *pem_data, int secure)
1002 OPENSSL_secure_free(pem_data);
1004 OPENSSL_free(pem_data);
1006 static int file_read_pem(BIO *bp, char **pem_name, char **pem_header,
1007 unsigned char **data, long *len,
1008 const UI_METHOD *ui_method,
1009 void *ui_data, int secure)
1012 ? PEM_read_bio_ex(bp, pem_name, pem_header, data, len,
1013 PEM_FLAG_SECURE | PEM_FLAG_EAY_COMPATIBLE)
1014 : PEM_read_bio(bp, pem_name, pem_header, data, len);
1020 * 10 is the number of characters in "Proc-Type:", which
1021 * PEM_get_EVP_CIPHER_INFO() requires to be present.
1022 * If the PEM header has less characters than that, it's
1023 * not worth spending cycles on it.
1025 if (strlen(*pem_header) > 10) {
1026 EVP_CIPHER_INFO cipher;
1027 struct pem_pass_data pass_data;
1029 if (!PEM_get_EVP_CIPHER_INFO(*pem_header, &cipher)
1030 || !file_fill_pem_pass_data(&pass_data, "PEM", ui_method, ui_data)
1031 || !PEM_do_header(&cipher, *data, len, file_get_pem_pass,
1039 static int file_read_asn1(BIO *bp, unsigned char **data, long *len)
1041 BUF_MEM *mem = NULL;
1043 if (asn1_d2i_read_bio(bp, &mem) < 0)
1046 *data = (unsigned char *)mem->data;
1047 *len = (long)mem->length;
1053 static int ends_with_dirsep(const char *uri)
1056 uri += strlen(uri) - 1;
1058 if (*uri == ']' || *uri == '>' || *uri == ':')
1060 #elif defined _WIN32
1067 static int file_name_to_uri(OSSL_STORE_LOADER_CTX *ctx, const char *name,
1070 assert(name != NULL);
1071 assert(data != NULL);
1073 const char *pathsep = ends_with_dirsep(ctx->_.dir.uri) ? "" : "/";
1074 long calculated_length = strlen(ctx->_.dir.uri) + strlen(pathsep)
1075 + strlen(name) + 1 /* \0 */;
1077 *data = OPENSSL_zalloc(calculated_length);
1078 if (*data == NULL) {
1079 OSSL_STOREerr(OSSL_STORE_F_FILE_NAME_TO_URI, ERR_R_MALLOC_FAILURE);
1083 OPENSSL_strlcat(*data, ctx->_.dir.uri, calculated_length);
1084 OPENSSL_strlcat(*data, pathsep, calculated_length);
1085 OPENSSL_strlcat(*data, name, calculated_length);
1090 static int file_eof(OSSL_STORE_LOADER_CTX *ctx);
1091 static int file_error(OSSL_STORE_LOADER_CTX *ctx);
1092 static OSSL_STORE_INFO *file_load(OSSL_STORE_LOADER_CTX *ctx,
1093 const UI_METHOD *ui_method, void *ui_data)
1095 OSSL_STORE_INFO *result = NULL;
1100 if (ctx->type == is_dir) {
1102 char *newname = NULL;
1104 if (ctx->_.dir.last_entry == NULL) {
1105 if (!ctx->_.dir.end_reached) {
1107 assert(ctx->_.dir.last_errno != 0);
1108 errno = ctx->_.dir.last_errno;
1110 openssl_strerror_r(errno, errbuf, sizeof(errbuf));
1111 OSSL_STOREerr(OSSL_STORE_F_FILE_LOAD, ERR_R_SYS_LIB);
1112 ERR_add_error_data(1, errbuf);
1117 if (ctx->_.dir.last_entry[0] != '.'
1118 && !file_name_to_uri(ctx, ctx->_.dir.last_entry, &newname))
1122 * On the first call (with a NULL context), OPENSSL_DIR_read()
1123 * cares about the second argument. On the following calls, it
1124 * only cares that it isn't NULL. Therefore, we can safely give
1127 ctx->_.dir.last_entry = OPENSSL_DIR_read(&ctx->_.dir.ctx,
1129 ctx->_.dir.last_errno = errno;
1130 if (ctx->_.dir.last_entry == NULL && ctx->_.dir.last_errno == 0)
1131 ctx->_.dir.end_reached = 1;
1134 && (result = OSSL_STORE_INFO_new_NAME(newname)) == NULL) {
1135 OPENSSL_free(newname);
1136 OSSL_STOREerr(OSSL_STORE_F_FILE_LOAD, ERR_R_OSSL_STORE_LIB);
1139 } while (result == NULL && !file_eof(ctx));
1141 int matchcount = -1;
1143 result = file_load_try_repeat(ctx, ui_method, ui_data);
1151 char *pem_name = NULL; /* PEM record name */
1152 char *pem_header = NULL; /* PEM record header */
1153 unsigned char *data = NULL; /* DER encoded data */
1154 long len = 0; /* DER encoded data length */
1157 if (ctx->type == is_pem) {
1158 if (!file_read_pem(ctx->_.file.file, &pem_name, &pem_header,
1159 &data, &len, ui_method, ui_data,
1160 (ctx->flags & FILE_FLAG_SECMEM) != 0)) {
1165 if (!file_read_asn1(ctx->_.file.file, &data, &len)) {
1171 result = file_load_try_decode(ctx, pem_name, pem_header, data, len,
1172 ui_method, ui_data, &matchcount);
1178 * If a PEM name matches more than one handler, the handlers are
1181 if (!ossl_assert(pem_name == NULL || matchcount <= 1)) {
1186 if (matchcount > 1) {
1187 OSSL_STOREerr(OSSL_STORE_F_FILE_LOAD,
1188 OSSL_STORE_R_AMBIGUOUS_CONTENT_TYPE);
1189 } else if (matchcount == 1) {
1191 * If there are other errors on the stack, they already show
1192 * what the problem is.
1194 if (ERR_peek_error() == 0) {
1195 OSSL_STOREerr(OSSL_STORE_F_FILE_LOAD,
1196 OSSL_STORE_R_UNSUPPORTED_CONTENT_TYPE);
1197 if (pem_name != NULL)
1198 ERR_add_error_data(3, "PEM type is '", pem_name, "'");
1205 pem_free_flag(pem_name, (ctx->flags & FILE_FLAG_SECMEM) != 0);
1206 pem_free_flag(pem_header, (ctx->flags & FILE_FLAG_SECMEM) != 0);
1207 pem_free_flag(data, (ctx->flags & FILE_FLAG_SECMEM) != 0);
1208 } while (matchcount == 0 && !file_eof(ctx) && !file_error(ctx));
1210 /* We bail out on ambiguity */
1218 static int file_error(OSSL_STORE_LOADER_CTX *ctx)
1220 return ctx->errcnt > 0;
1223 static int file_eof(OSSL_STORE_LOADER_CTX *ctx)
1225 if (ctx->type == is_dir)
1226 return ctx->_.dir.end_reached;
1228 if (ctx->_.file.last_handler != NULL
1229 && !ctx->_.file.last_handler->eof(ctx->_.file.last_handler_ctx))
1231 return BIO_eof(ctx->_.file.file);
1234 static int file_close(OSSL_STORE_LOADER_CTX *ctx)
1236 if (ctx->type == is_dir) {
1237 OPENSSL_DIR_end(&ctx->_.dir.ctx);
1239 BIO_free_all(ctx->_.file.file);
1241 OSSL_STORE_LOADER_CTX_free(ctx);
1245 int ossl_store_file_detach_pem_bio_int(OSSL_STORE_LOADER_CTX *ctx)
1247 OSSL_STORE_LOADER_CTX_free(ctx);
1251 static OSSL_STORE_LOADER file_loader =
1263 static void store_file_loader_deinit(void)
1265 ossl_store_unregister_loader_int(file_loader.scheme);
1268 int ossl_store_file_loader_init(void)
1270 int ret = ossl_store_register_loader_int(&file_loader);
1272 OPENSSL_atexit(store_file_loader_deinit);