2 * Copyright 1995-2017 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
11 #include "internal/cryptlib.h"
15 #include <sys/types.h>
17 #ifndef OPENSSL_NO_POSIX_IO
18 # include <sys/stat.h>
22 #include <openssl/lhash.h>
23 #include <openssl/x509.h>
24 #include "internal/x509_int.h"
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 X509_NAME *name, X509_OBJECT *ret);
51 static X509_LOOKUP_METHOD x509_dir_lookup = {
52 "Load certs from files in a directory",
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,
76 ld = (BY_DIR *)ctx->method_data;
80 if (argl == X509_FILETYPE_DEFAULT) {
81 dir = (char *)getenv(X509_get_default_cert_dir_env());
83 ret = add_cert_dir(ld, dir, X509_FILETYPE_PEM);
85 ret = add_cert_dir(ld, X509_get_default_cert_dir(),
88 X509err(X509_F_DIR_CTRL, X509_R_LOADING_CERT_DIR);
91 ret = add_cert_dir(ld, argp, (int)argl);
97 static int new_dir(X509_LOOKUP *lu)
101 if ((a = OPENSSL_malloc(sizeof(*a))) == NULL)
103 if ((a->buffer = BUF_MEM_new()) == NULL) {
108 a->lock = CRYPTO_THREAD_lock_new();
109 if (a->lock == NULL) {
110 BUF_MEM_free(a->buffer);
114 lu->method_data = (char *)a;
118 static void by_dir_hash_free(BY_DIR_HASH *hash)
123 static int by_dir_hash_cmp(const BY_DIR_HASH *const *a,
124 const BY_DIR_HASH *const *b)
126 if ((*a)->hash > (*b)->hash)
128 if ((*a)->hash < (*b)->hash)
133 static void by_dir_entry_free(BY_DIR_ENTRY *ent)
135 OPENSSL_free(ent->dir);
136 sk_BY_DIR_HASH_pop_free(ent->hashes, by_dir_hash_free);
140 static void free_dir(X509_LOOKUP *lu)
144 a = (BY_DIR *)lu->method_data;
145 sk_BY_DIR_ENTRY_pop_free(a->dirs, by_dir_entry_free);
146 BUF_MEM_free(a->buffer);
147 CRYPTO_THREAD_lock_free(a->lock);
151 static int add_cert_dir(BY_DIR *ctx, const char *dir, int type)
154 const char *s, *ss, *p;
156 if (dir == NULL || !*dir) {
157 X509err(X509_F_ADD_CERT_DIR, X509_R_INVALID_DIRECTORY);
164 if ((*p == LIST_SEPARATOR_CHAR) || (*p == '\0')) {
171 for (j = 0; j < sk_BY_DIR_ENTRY_num(ctx->dirs); j++) {
172 ent = sk_BY_DIR_ENTRY_value(ctx->dirs, j);
173 if (strlen(ent->dir) == len && strncmp(ent->dir, ss, len) == 0)
176 if (j < sk_BY_DIR_ENTRY_num(ctx->dirs))
178 if (ctx->dirs == NULL) {
179 ctx->dirs = sk_BY_DIR_ENTRY_new_null();
181 X509err(X509_F_ADD_CERT_DIR, ERR_R_MALLOC_FAILURE);
185 ent = OPENSSL_malloc(sizeof(*ent));
188 ent->dir_type = type;
189 ent->hashes = sk_BY_DIR_HASH_new(by_dir_hash_cmp);
190 ent->dir = OPENSSL_strndup(ss, len);
191 if (ent->dir == NULL || ent->hashes == NULL) {
192 by_dir_entry_free(ent);
195 if (!sk_BY_DIR_ENTRY_push(ctx->dirs, ent)) {
196 by_dir_entry_free(ent);
200 } while (*p++ != '\0');
204 static int get_cert_by_subject(X509_LOOKUP *xl, X509_LOOKUP_TYPE type,
205 X509_NAME *name, X509_OBJECT *ret)
216 X509_OBJECT stmp, *tmp;
217 const char *postfix = "";
223 if (type == X509_LU_X509) {
224 data.st_x509.cert_info.subject = name;
225 stmp.data.x509 = &data.st_x509;
227 } else if (type == X509_LU_CRL) {
228 data.crl.crl.issuer = name;
229 stmp.data.crl = &data.crl;
232 X509err(X509_F_GET_CERT_BY_SUBJECT, X509_R_WRONG_LOOKUP_TYPE);
236 if ((b = BUF_MEM_new()) == NULL) {
237 X509err(X509_F_GET_CERT_BY_SUBJECT, ERR_R_BUF_LIB);
241 ctx = (BY_DIR *)xl->method_data;
243 h = X509_NAME_hash(name);
244 for (i = 0; i < sk_BY_DIR_ENTRY_num(ctx->dirs); i++) {
247 BY_DIR_HASH htmp, *hent;
248 ent = sk_BY_DIR_ENTRY_value(ctx->dirs, i);
249 j = strlen(ent->dir) + 1 + 8 + 6 + 1 + 1;
250 if (!BUF_MEM_grow(b, j)) {
251 X509err(X509_F_GET_CERT_BY_SUBJECT, ERR_R_MALLOC_FAILURE);
254 if (type == X509_LU_CRL && ent->hashes) {
256 CRYPTO_THREAD_read_lock(ctx->lock);
257 idx = sk_BY_DIR_HASH_find(ent->hashes, &htmp);
259 hent = sk_BY_DIR_HASH_value(ent->hashes, idx);
265 CRYPTO_THREAD_unlock(ctx->lock);
272 #ifdef OPENSSL_SYS_VMS
273 c = ent->dir[strlen(ent->dir) - 1];
274 if (c != ':' && c != '>' && c != ']') {
276 * If no separator is present, we assume the directory
277 * specifier is a logical name, and add a colon. We really
278 * should use better VMS routines for merging things like
279 * this, but this will do for now... -- Richard Levitte
288 * This is special. When c == '\0', no directory separator
291 BIO_snprintf(b->data, b->max,
292 "%s%08lx.%s%d", ent->dir, h, postfix, k);
294 BIO_snprintf(b->data, b->max,
295 "%s%c%08lx.%s%d", ent->dir, c, h, postfix, k);
297 #ifndef OPENSSL_NO_POSIX_IO
303 if (stat(b->data, &st) < 0)
308 if (type == X509_LU_X509) {
309 if ((X509_load_cert_file(xl, b->data, ent->dir_type)) == 0)
311 } else if (type == X509_LU_CRL) {
312 if ((X509_load_crl_file(xl, b->data, ent->dir_type)) == 0)
315 /* else case will caught higher up */
320 * we have added it to the cache so now pull it out again
322 CRYPTO_THREAD_write_lock(ctx->lock);
323 j = sk_X509_OBJECT_find(xl->store_ctx->objs, &stmp);
325 tmp = sk_X509_OBJECT_value(xl->store_ctx->objs, j);
328 CRYPTO_THREAD_unlock(ctx->lock);
330 /* If a CRL, update the last file suffix added for this */
332 if (type == X509_LU_CRL) {
333 CRYPTO_THREAD_write_lock(ctx->lock);
335 * Look for entry again in case another thread added an entry
340 idx = sk_BY_DIR_HASH_find(ent->hashes, &htmp);
342 hent = sk_BY_DIR_HASH_value(ent->hashes, idx);
345 hent = OPENSSL_malloc(sizeof(*hent));
347 CRYPTO_THREAD_unlock(ctx->lock);
348 X509err(X509_F_GET_CERT_BY_SUBJECT, ERR_R_MALLOC_FAILURE);
354 if (!sk_BY_DIR_HASH_push(ent->hashes, hent)) {
355 CRYPTO_THREAD_unlock(ctx->lock);
360 } else if (hent->suffix < k) {
364 CRYPTO_THREAD_unlock(ctx->lock);
370 ret->type = tmp->type;
371 memcpy(&ret->data, &tmp->data, sizeof(ret->data));
374 * Clear any errors that might have been raised processing empty
375 * or malformed files.
380 * If we were going to up the reference count, we would need to
381 * do it on a perl 'type' basis
383 /*- CRYPTO_add(&tmp->data.x509->references,1,