2 * Copyright 1995-2018 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
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 "internal/x509_int.h"
25 struct lookup_dir_hashes_st {
30 struct lookup_dir_entry_st {
33 STACK_OF(BY_DIR_HASH) *hashes;
36 typedef struct lookup_dir_st {
38 STACK_OF(BY_DIR_ENTRY) *dirs;
42 static int dir_ctrl(X509_LOOKUP *ctx, int cmd, const char *argp, long argl,
44 static int new_dir(X509_LOOKUP *lu);
45 static void free_dir(X509_LOOKUP *lu);
46 static int add_cert_dir(BY_DIR *ctx, const char *dir, int type);
47 static int get_cert_by_subject(X509_LOOKUP *xl, X509_LOOKUP_TYPE type,
48 X509_NAME *name, X509_OBJECT *ret);
49 static X509_LOOKUP_METHOD x509_dir_lookup = {
50 "Load certs from files in a directory",
51 new_dir, /* new_item */
56 get_cert_by_subject, /* get_by_subject */
57 NULL, /* get_by_issuer_serial */
58 NULL, /* get_by_fingerprint */
59 NULL, /* get_by_alias */
62 X509_LOOKUP_METHOD *X509_LOOKUP_hash_dir(void)
64 return &x509_dir_lookup;
67 static int dir_ctrl(X509_LOOKUP *ctx, int cmd, const char *argp, long argl,
71 BY_DIR *ld = (BY_DIR *)ctx->method_data;
75 if (argl == X509_FILETYPE_DEFAULT) {
76 const char *dir = getenv(X509_get_default_cert_dir_env());
79 ret = add_cert_dir(ld, dir, X509_FILETYPE_PEM);
81 ret = add_cert_dir(ld, X509_get_default_cert_dir(),
84 X509err(X509_F_DIR_CTRL, X509_R_LOADING_CERT_DIR);
87 ret = add_cert_dir(ld, argp, (int)argl);
93 static int new_dir(X509_LOOKUP *lu)
95 BY_DIR *a = OPENSSL_malloc(sizeof(*a));
98 X509err(X509_F_NEW_DIR, ERR_R_MALLOC_FAILURE);
102 if ((a->buffer = BUF_MEM_new()) == NULL) {
103 X509err(X509_F_NEW_DIR, ERR_R_MALLOC_FAILURE);
107 a->lock = CRYPTO_THREAD_lock_new();
108 if (a->lock == NULL) {
109 BUF_MEM_free(a->buffer);
110 X509err(X509_F_NEW_DIR, ERR_R_MALLOC_FAILURE);
121 static void by_dir_hash_free(BY_DIR_HASH *hash)
126 static int by_dir_hash_cmp(const BY_DIR_HASH *const *a,
127 const BY_DIR_HASH *const *b)
129 if ((*a)->hash > (*b)->hash)
131 if ((*a)->hash < (*b)->hash)
136 static void by_dir_entry_free(BY_DIR_ENTRY *ent)
138 OPENSSL_free(ent->dir);
139 sk_BY_DIR_HASH_pop_free(ent->hashes, by_dir_hash_free);
143 static void free_dir(X509_LOOKUP *lu)
145 BY_DIR *a = (BY_DIR *)lu->method_data;
147 sk_BY_DIR_ENTRY_pop_free(a->dirs, by_dir_entry_free);
148 BUF_MEM_free(a->buffer);
149 CRYPTO_THREAD_lock_free(a->lock);
153 static int add_cert_dir(BY_DIR *ctx, const char *dir, int type)
157 const char *s, *ss, *p;
159 if (dir == NULL || !*dir) {
160 X509err(X509_F_ADD_CERT_DIR, X509_R_INVALID_DIRECTORY);
167 if ((*p == LIST_SEPARATOR_CHAR) || (*p == '\0')) {
175 for (j = 0; j < sk_BY_DIR_ENTRY_num(ctx->dirs); j++) {
176 ent = sk_BY_DIR_ENTRY_value(ctx->dirs, j);
177 if (strlen(ent->dir) == len && strncmp(ent->dir, ss, len) == 0)
180 if (j < sk_BY_DIR_ENTRY_num(ctx->dirs))
182 if (ctx->dirs == NULL) {
183 ctx->dirs = sk_BY_DIR_ENTRY_new_null();
185 X509err(X509_F_ADD_CERT_DIR, ERR_R_MALLOC_FAILURE);
189 ent = OPENSSL_malloc(sizeof(*ent));
191 X509err(X509_F_ADD_CERT_DIR, ERR_R_MALLOC_FAILURE);
194 ent->dir_type = type;
195 ent->hashes = sk_BY_DIR_HASH_new(by_dir_hash_cmp);
196 ent->dir = OPENSSL_strndup(ss, len);
197 if (ent->dir == NULL || ent->hashes == NULL) {
198 by_dir_entry_free(ent);
201 if (!sk_BY_DIR_ENTRY_push(ctx->dirs, ent)) {
202 by_dir_entry_free(ent);
203 X509err(X509_F_ADD_CERT_DIR, ERR_R_MALLOC_FAILURE);
207 } while (*p++ != '\0');
211 static int get_cert_by_subject(X509_LOOKUP *xl, X509_LOOKUP_TYPE type,
212 X509_NAME *name, X509_OBJECT *ret)
223 X509_OBJECT stmp, *tmp;
224 const char *postfix = "";
230 if (type == X509_LU_X509) {
231 data.st_x509.cert_info.subject = name;
232 stmp.data.x509 = &data.st_x509;
234 } else if (type == X509_LU_CRL) {
235 data.crl.crl.issuer = name;
236 stmp.data.crl = &data.crl;
239 X509err(X509_F_GET_CERT_BY_SUBJECT, X509_R_WRONG_LOOKUP_TYPE);
243 if ((b = BUF_MEM_new()) == NULL) {
244 X509err(X509_F_GET_CERT_BY_SUBJECT, ERR_R_BUF_LIB);
248 ctx = (BY_DIR *)xl->method_data;
250 h = X509_NAME_hash(name);
251 for (i = 0; i < sk_BY_DIR_ENTRY_num(ctx->dirs); i++) {
254 BY_DIR_HASH htmp, *hent;
256 ent = sk_BY_DIR_ENTRY_value(ctx->dirs, i);
257 j = strlen(ent->dir) + 1 + 8 + 6 + 1 + 1;
258 if (!BUF_MEM_grow(b, j)) {
259 X509err(X509_F_GET_CERT_BY_SUBJECT, ERR_R_MALLOC_FAILURE);
262 if (type == X509_LU_CRL && ent->hashes) {
264 CRYPTO_THREAD_read_lock(ctx->lock);
265 idx = sk_BY_DIR_HASH_find(ent->hashes, &htmp);
267 hent = sk_BY_DIR_HASH_value(ent->hashes, idx);
273 CRYPTO_THREAD_unlock(ctx->lock);
280 #ifdef OPENSSL_SYS_VMS
281 c = ent->dir[strlen(ent->dir) - 1];
282 if (c != ':' && c != '>' && c != ']') {
284 * If no separator is present, we assume the directory
285 * specifier is a logical name, and add a colon. We really
286 * should use better VMS routines for merging things like
287 * this, but this will do for now... -- Richard Levitte
296 * This is special. When c == '\0', no directory separator
299 BIO_snprintf(b->data, b->max,
300 "%s%08lx.%s%d", ent->dir, h, postfix, k);
302 BIO_snprintf(b->data, b->max,
303 "%s%c%08lx.%s%d", ent->dir, c, h, postfix, k);
305 #ifndef OPENSSL_NO_POSIX_IO
311 if (stat(b->data, &st) < 0)
316 if (type == X509_LU_X509) {
317 if ((X509_load_cert_file(xl, b->data, ent->dir_type)) == 0)
319 } else if (type == X509_LU_CRL) {
320 if ((X509_load_crl_file(xl, b->data, ent->dir_type)) == 0)
323 /* else case will caught higher up */
328 * we have added it to the cache so now pull it out again
330 CRYPTO_THREAD_write_lock(ctx->lock);
331 j = sk_X509_OBJECT_find(xl->store_ctx->objs, &stmp);
333 tmp = sk_X509_OBJECT_value(xl->store_ctx->objs, j);
336 CRYPTO_THREAD_unlock(ctx->lock);
338 /* If a CRL, update the last file suffix added for this */
340 if (type == X509_LU_CRL) {
341 CRYPTO_THREAD_write_lock(ctx->lock);
343 * Look for entry again in case another thread added an entry
348 idx = sk_BY_DIR_HASH_find(ent->hashes, &htmp);
350 hent = sk_BY_DIR_HASH_value(ent->hashes, idx);
353 hent = OPENSSL_malloc(sizeof(*hent));
355 CRYPTO_THREAD_unlock(ctx->lock);
356 X509err(X509_F_GET_CERT_BY_SUBJECT, ERR_R_MALLOC_FAILURE);
362 if (!sk_BY_DIR_HASH_push(ent->hashes, hent)) {
363 CRYPTO_THREAD_unlock(ctx->lock);
365 X509err(X509_F_GET_CERT_BY_SUBJECT, ERR_R_MALLOC_FAILURE);
369 } else if (hent->suffix < k) {
373 CRYPTO_THREAD_unlock(ctx->lock);
379 ret->type = tmp->type;
380 memcpy(&ret->data, &tmp->data, sizeof(ret->data));
383 * Clear any errors that might have been raised processing empty
384 * or malformed files.