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
13 #include <sys/types.h>
15 #include "internal/cryptlib.h"
18 #ifndef OPENSSL_NO_POSIX_IO
19 # include <sys/stat.h>
23 #include <openssl/lhash.h>
24 #include <openssl/x509.h>
25 #include "internal/x509_int.h"
28 struct lookup_dir_hashes_st {
33 struct lookup_dir_entry_st {
36 STACK_OF(BY_DIR_HASH) *hashes;
39 typedef struct lookup_dir_st {
41 STACK_OF(BY_DIR_ENTRY) *dirs;
45 static int dir_ctrl(X509_LOOKUP *ctx, int cmd, const char *argp, long argl,
47 static int new_dir(X509_LOOKUP *lu);
48 static void free_dir(X509_LOOKUP *lu);
49 static int add_cert_dir(BY_DIR *ctx, const char *dir, int type);
50 static int get_cert_by_subject(X509_LOOKUP *xl, X509_LOOKUP_TYPE type,
51 X509_NAME *name, X509_OBJECT *ret);
52 static X509_LOOKUP_METHOD x509_dir_lookup = {
53 "Load certs from files in a directory",
59 get_cert_by_subject, /* get_by_subject */
60 NULL, /* get_by_issuer_serial */
61 NULL, /* get_by_fingerprint */
62 NULL, /* get_by_alias */
65 X509_LOOKUP_METHOD *X509_LOOKUP_hash_dir(void)
67 return (&x509_dir_lookup);
70 static int dir_ctrl(X509_LOOKUP *ctx, int cmd, const char *argp, long argl,
77 ld = (BY_DIR *)ctx->method_data;
81 if (argl == X509_FILETYPE_DEFAULT) {
82 dir = (char *)getenv(X509_get_default_cert_dir_env());
84 ret = add_cert_dir(ld, dir, X509_FILETYPE_PEM);
86 ret = add_cert_dir(ld, X509_get_default_cert_dir(),
89 X509err(X509_F_DIR_CTRL, X509_R_LOADING_CERT_DIR);
92 ret = add_cert_dir(ld, argp, (int)argl);
98 static int new_dir(X509_LOOKUP *lu)
102 if ((a = OPENSSL_malloc(sizeof(*a))) == NULL)
104 if ((a->buffer = BUF_MEM_new()) == NULL) {
109 a->lock = CRYPTO_THREAD_lock_new();
110 if (a->lock == NULL) {
111 BUF_MEM_free(a->buffer);
115 lu->method_data = (char *)a;
119 static void by_dir_hash_free(BY_DIR_HASH *hash)
124 static int by_dir_hash_cmp(const BY_DIR_HASH *const *a,
125 const BY_DIR_HASH *const *b)
127 if ((*a)->hash > (*b)->hash)
129 if ((*a)->hash < (*b)->hash)
134 static void by_dir_entry_free(BY_DIR_ENTRY *ent)
136 OPENSSL_free(ent->dir);
137 sk_BY_DIR_HASH_pop_free(ent->hashes, by_dir_hash_free);
141 static void free_dir(X509_LOOKUP *lu)
145 a = (BY_DIR *)lu->method_data;
146 sk_BY_DIR_ENTRY_pop_free(a->dirs, by_dir_entry_free);
147 BUF_MEM_free(a->buffer);
148 CRYPTO_THREAD_lock_free(a->lock);
152 static int add_cert_dir(BY_DIR *ctx, const char *dir, int type)
156 if (dir == NULL || !*dir) {
157 X509err(X509_F_ADD_CERT_DIR, X509_R_INVALID_DIRECTORY);
164 if ((*p == LIST_SEPARATOR_CHAR) || (*p == '\0')) {
173 for (j = 0; j < sk_BY_DIR_ENTRY_num(ctx->dirs); j++) {
174 ent = sk_BY_DIR_ENTRY_value(ctx->dirs, j);
175 if (strlen(ent->dir) == len &&
176 strncmp(ent->dir, ss, len) == 0)
179 if (j < sk_BY_DIR_ENTRY_num(ctx->dirs))
181 if (ctx->dirs == NULL) {
182 ctx->dirs = sk_BY_DIR_ENTRY_new_null();
184 X509err(X509_F_ADD_CERT_DIR, ERR_R_MALLOC_FAILURE);
188 ent = OPENSSL_malloc(sizeof(*ent));
191 ent->dir_type = type;
192 ent->hashes = sk_BY_DIR_HASH_new(by_dir_hash_cmp);
193 ent->dir = OPENSSL_strndup(ss, len);
194 if (ent->dir == NULL || ent->hashes == NULL) {
195 by_dir_entry_free(ent);
198 if (!sk_BY_DIR_ENTRY_push(ctx->dirs, ent)) {
199 by_dir_entry_free(ent);
203 } while (*p++ != '\0');
207 static int get_cert_by_subject(X509_LOOKUP *xl, X509_LOOKUP_TYPE type,
208 X509_NAME *name, X509_OBJECT *ret)
219 X509_OBJECT stmp, *tmp;
220 const char *postfix = "";
226 if (type == X509_LU_X509) {
227 data.st_x509.cert_info.subject = name;
228 stmp.data.x509 = &data.st_x509;
230 } else if (type == X509_LU_CRL) {
231 data.crl.crl.issuer = name;
232 stmp.data.crl = &data.crl;
235 X509err(X509_F_GET_CERT_BY_SUBJECT, X509_R_WRONG_LOOKUP_TYPE);
239 if ((b = BUF_MEM_new()) == NULL) {
240 X509err(X509_F_GET_CERT_BY_SUBJECT, ERR_R_BUF_LIB);
244 ctx = (BY_DIR *)xl->method_data;
246 h = X509_NAME_hash(name);
247 for (i = 0; i < sk_BY_DIR_ENTRY_num(ctx->dirs); i++) {
250 BY_DIR_HASH htmp, *hent;
251 ent = sk_BY_DIR_ENTRY_value(ctx->dirs, i);
252 j = strlen(ent->dir) + 1 + 8 + 6 + 1 + 1;
253 if (!BUF_MEM_grow(b, j)) {
254 X509err(X509_F_GET_CERT_BY_SUBJECT, ERR_R_MALLOC_FAILURE);
257 if (type == X509_LU_CRL && ent->hashes) {
259 CRYPTO_THREAD_read_lock(ctx->lock);
260 idx = sk_BY_DIR_HASH_find(ent->hashes, &htmp);
262 hent = sk_BY_DIR_HASH_value(ent->hashes, idx);
268 CRYPTO_THREAD_unlock(ctx->lock);
275 #ifdef OPENSSL_SYS_VMS
276 c = ent->dir[strlen(ent->dir) - 1];
277 if (c != ':' && c != '>' && c != ']') {
279 * If no separator is present, we assume the directory
280 * specifier is a logical name, and add a colon. We really
281 * should use better VMS routines for merging things like
282 * this, but this will do for now... -- Richard Levitte
291 * This is special. When c == '\0', no directory separator
294 BIO_snprintf(b->data, b->max,
295 "%s%08lx.%s%d", ent->dir, h, postfix, k);
297 BIO_snprintf(b->data, b->max,
298 "%s%c%08lx.%s%d", ent->dir, c, h, postfix, k);
300 #ifndef OPENSSL_NO_POSIX_IO
306 if (stat(b->data, &st) < 0)
311 if (type == X509_LU_X509) {
312 if ((X509_load_cert_file(xl, b->data, ent->dir_type)) == 0)
314 } else if (type == X509_LU_CRL) {
315 if ((X509_load_crl_file(xl, b->data, ent->dir_type)) == 0)
318 /* else case will caught higher up */
323 * we have added it to the cache so now pull it out again
325 CRYPTO_THREAD_write_lock(ctx->lock);
326 j = sk_X509_OBJECT_find(xl->store_ctx->objs, &stmp);
328 tmp = sk_X509_OBJECT_value(xl->store_ctx->objs, j);
331 CRYPTO_THREAD_unlock(ctx->lock);
333 /* If a CRL, update the last file suffix added for this */
335 if (type == X509_LU_CRL) {
336 CRYPTO_THREAD_write_lock(ctx->lock);
338 * Look for entry again in case another thread added an entry
343 idx = sk_BY_DIR_HASH_find(ent->hashes, &htmp);
345 hent = sk_BY_DIR_HASH_value(ent->hashes, idx);
348 hent = OPENSSL_malloc(sizeof(*hent));
350 CRYPTO_THREAD_unlock(ctx->lock);
351 X509err(X509_F_GET_CERT_BY_SUBJECT, ERR_R_MALLOC_FAILURE);
357 if (!sk_BY_DIR_HASH_push(ent->hashes, hent)) {
358 CRYPTO_THREAD_unlock(ctx->lock);
363 } else if (hent->suffix < k) {
367 CRYPTO_THREAD_unlock(ctx->lock);
373 ret->type = tmp->type;
374 memcpy(&ret->data, &tmp->data, sizeof(ret->data));
377 * Clear any errors that might have been raised processing empty
378 * or malformed files.
383 * If we were going to up the reference count, we would need to
384 * do it on a perl 'type' basis
386 /*- CRYPTO_add(&tmp->data.x509->references,1,