2 * Copyright 1995-2020 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
11 #include "internal/cryptlib.h"
15 #include <sys/types.h>
17 #ifndef OPENSSL_NO_POSIX_IO
18 # include <sys/stat.h>
21 #include <openssl/x509.h>
22 #include "crypto/x509.h"
23 #include "x509_local.h"
25 DEFINE_STACK_OF(X509_OBJECT)
27 struct lookup_dir_hashes_st {
32 struct lookup_dir_entry_st {
35 STACK_OF(BY_DIR_HASH) *hashes;
38 typedef struct lookup_dir_st {
40 STACK_OF(BY_DIR_ENTRY) *dirs;
44 static int dir_ctrl(X509_LOOKUP *ctx, int cmd, const char *argp, long argl,
46 static int new_dir(X509_LOOKUP *lu);
47 static void free_dir(X509_LOOKUP *lu);
48 static int add_cert_dir(BY_DIR *ctx, const char *dir, int type);
49 static int get_cert_by_subject(X509_LOOKUP *xl, X509_LOOKUP_TYPE type,
50 const X509_NAME *name, X509_OBJECT *ret);
51 static X509_LOOKUP_METHOD x509_dir_lookup = {
52 "Load certs from files in a directory",
53 new_dir, /* new_item */
58 get_cert_by_subject, /* get_by_subject */
59 NULL, /* get_by_issuer_serial */
60 NULL, /* get_by_fingerprint */
61 NULL, /* get_by_alias */
64 X509_LOOKUP_METHOD *X509_LOOKUP_hash_dir(void)
66 return &x509_dir_lookup;
69 static int dir_ctrl(X509_LOOKUP *ctx, int cmd, const char *argp, long argl,
73 BY_DIR *ld = (BY_DIR *)ctx->method_data;
77 if (argl == X509_FILETYPE_DEFAULT) {
78 const char *dir = ossl_safe_getenv(X509_get_default_cert_dir_env());
81 ret = add_cert_dir(ld, dir, X509_FILETYPE_PEM);
83 ret = add_cert_dir(ld, X509_get_default_cert_dir(),
86 X509err(X509_F_DIR_CTRL, X509_R_LOADING_CERT_DIR);
89 ret = add_cert_dir(ld, argp, (int)argl);
95 static int new_dir(X509_LOOKUP *lu)
97 BY_DIR *a = OPENSSL_malloc(sizeof(*a));
100 X509err(X509_F_NEW_DIR, ERR_R_MALLOC_FAILURE);
104 if ((a->buffer = BUF_MEM_new()) == NULL) {
105 X509err(X509_F_NEW_DIR, ERR_R_MALLOC_FAILURE);
109 a->lock = CRYPTO_THREAD_lock_new();
110 if (a->lock == NULL) {
111 BUF_MEM_free(a->buffer);
112 X509err(X509_F_NEW_DIR, ERR_R_MALLOC_FAILURE);
123 static void by_dir_hash_free(BY_DIR_HASH *hash)
128 static int by_dir_hash_cmp(const BY_DIR_HASH *const *a,
129 const BY_DIR_HASH *const *b)
131 if ((*a)->hash > (*b)->hash)
133 if ((*a)->hash < (*b)->hash)
138 static void by_dir_entry_free(BY_DIR_ENTRY *ent)
140 OPENSSL_free(ent->dir);
141 sk_BY_DIR_HASH_pop_free(ent->hashes, by_dir_hash_free);
145 static void free_dir(X509_LOOKUP *lu)
147 BY_DIR *a = (BY_DIR *)lu->method_data;
149 sk_BY_DIR_ENTRY_pop_free(a->dirs, by_dir_entry_free);
150 BUF_MEM_free(a->buffer);
151 CRYPTO_THREAD_lock_free(a->lock);
155 static int add_cert_dir(BY_DIR *ctx, const char *dir, int type)
159 const char *s, *ss, *p;
161 if (dir == NULL || *dir == '\0') {
162 X509err(X509_F_ADD_CERT_DIR, X509_R_INVALID_DIRECTORY);
169 if ((*p == LIST_SEPARATOR_CHAR) || (*p == '\0')) {
177 for (j = 0; j < sk_BY_DIR_ENTRY_num(ctx->dirs); j++) {
178 ent = sk_BY_DIR_ENTRY_value(ctx->dirs, j);
179 if (strlen(ent->dir) == len && strncmp(ent->dir, ss, len) == 0)
182 if (j < sk_BY_DIR_ENTRY_num(ctx->dirs))
184 if (ctx->dirs == NULL) {
185 ctx->dirs = sk_BY_DIR_ENTRY_new_null();
187 X509err(X509_F_ADD_CERT_DIR, ERR_R_MALLOC_FAILURE);
191 ent = OPENSSL_malloc(sizeof(*ent));
193 X509err(X509_F_ADD_CERT_DIR, ERR_R_MALLOC_FAILURE);
196 ent->dir_type = type;
197 ent->hashes = sk_BY_DIR_HASH_new(by_dir_hash_cmp);
198 ent->dir = OPENSSL_strndup(ss, len);
199 if (ent->dir == NULL || ent->hashes == NULL) {
200 by_dir_entry_free(ent);
203 if (!sk_BY_DIR_ENTRY_push(ctx->dirs, ent)) {
204 by_dir_entry_free(ent);
205 X509err(X509_F_ADD_CERT_DIR, ERR_R_MALLOC_FAILURE);
209 } while (*p++ != '\0');
213 static int get_cert_by_subject(X509_LOOKUP *xl, X509_LOOKUP_TYPE type,
214 const X509_NAME *name, X509_OBJECT *ret)
225 X509_OBJECT stmp, *tmp;
226 const char *postfix = "";
232 if (type == X509_LU_X509) {
233 data.st_x509.cert_info.subject = (X509_NAME *)name; /* won't modify it */
234 stmp.data.x509 = &data.st_x509;
236 } else if (type == X509_LU_CRL) {
237 data.crl.crl.issuer = (X509_NAME *)name; /* won't modify it */
238 stmp.data.crl = &data.crl;
241 X509err(X509_F_GET_CERT_BY_SUBJECT, X509_R_WRONG_LOOKUP_TYPE);
245 if ((b = BUF_MEM_new()) == NULL) {
246 X509err(X509_F_GET_CERT_BY_SUBJECT, ERR_R_BUF_LIB);
250 ctx = (BY_DIR *)xl->method_data;
252 h = X509_NAME_hash(name);
253 for (i = 0; i < sk_BY_DIR_ENTRY_num(ctx->dirs); i++) {
256 BY_DIR_HASH htmp, *hent;
258 ent = sk_BY_DIR_ENTRY_value(ctx->dirs, i);
259 j = strlen(ent->dir) + 1 + 8 + 6 + 1 + 1;
260 if (!BUF_MEM_grow(b, j)) {
261 X509err(X509_F_GET_CERT_BY_SUBJECT, ERR_R_MALLOC_FAILURE);
264 if (type == X509_LU_CRL && ent->hashes) {
266 CRYPTO_THREAD_read_lock(ctx->lock);
267 idx = sk_BY_DIR_HASH_find(ent->hashes, &htmp);
269 hent = sk_BY_DIR_HASH_value(ent->hashes, idx);
275 CRYPTO_THREAD_unlock(ctx->lock);
282 #ifdef OPENSSL_SYS_VMS
283 c = ent->dir[strlen(ent->dir) - 1];
284 if (c != ':' && c != '>' && c != ']') {
286 * If no separator is present, we assume the directory
287 * specifier is a logical name, and add a colon. We really
288 * should use better VMS routines for merging things like
289 * this, but this will do for now... -- Richard Levitte
298 * This is special. When c == '\0', no directory separator
301 BIO_snprintf(b->data, b->max,
302 "%s%08lx.%s%d", ent->dir, h, postfix, k);
304 BIO_snprintf(b->data, b->max,
305 "%s%c%08lx.%s%d", ent->dir, c, h, postfix, k);
307 #ifndef OPENSSL_NO_POSIX_IO
313 if (stat(b->data, &st) < 0)
318 if (type == X509_LU_X509) {
319 if ((X509_load_cert_file(xl, b->data, ent->dir_type)) == 0)
321 } else if (type == X509_LU_CRL) {
322 if ((X509_load_crl_file(xl, b->data, ent->dir_type)) == 0)
325 /* else case will caught higher up */
330 * we have added it to the cache so now pull it out again
332 X509_STORE_lock(xl->store_ctx);
333 j = sk_X509_OBJECT_find(xl->store_ctx->objs, &stmp);
334 tmp = sk_X509_OBJECT_value(xl->store_ctx->objs, j);
335 X509_STORE_unlock(xl->store_ctx);
337 /* If a CRL, update the last file suffix added for this */
339 if (type == X509_LU_CRL) {
340 CRYPTO_THREAD_write_lock(ctx->lock);
342 * Look for entry again in case another thread added an entry
347 idx = sk_BY_DIR_HASH_find(ent->hashes, &htmp);
348 hent = sk_BY_DIR_HASH_value(ent->hashes, idx);
351 hent = OPENSSL_malloc(sizeof(*hent));
353 CRYPTO_THREAD_unlock(ctx->lock);
354 X509err(X509_F_GET_CERT_BY_SUBJECT, ERR_R_MALLOC_FAILURE);
360 if (!sk_BY_DIR_HASH_push(ent->hashes, hent)) {
361 CRYPTO_THREAD_unlock(ctx->lock);
363 X509err(X509_F_GET_CERT_BY_SUBJECT, ERR_R_MALLOC_FAILURE);
367 } else if (hent->suffix < k) {
371 CRYPTO_THREAD_unlock(ctx->lock);
377 ret->type = tmp->type;
378 memcpy(&ret->data, &tmp->data, sizeof(ret->data));
381 * Clear any errors that might have been raised processing empty
382 * or malformed files.