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-rw-r--r--src/lib/libcrypto/x509/by_dir.c407
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diff --git a/src/lib/libcrypto/x509/by_dir.c b/src/lib/libcrypto/x509/by_dir.c
deleted file mode 100644
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--- a/src/lib/libcrypto/x509/by_dir.c
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1/* $OpenBSD: by_dir.c,v 1.48 2024/08/31 10:19:17 tb Exp $ */
2/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
3 * All rights reserved.
4 *
5 * This package is an SSL implementation written
6 * by Eric Young (eay@cryptsoft.com).
7 * The implementation was written so as to conform with Netscapes SSL.
8 *
9 * This library is free for commercial and non-commercial use as long as
10 * the following conditions are aheared to. The following conditions
11 * apply to all code found in this distribution, be it the RC4, RSA,
12 * lhash, DES, etc., code; not just the SSL code. The SSL documentation
13 * included with this distribution is covered by the same copyright terms
14 * except that the holder is Tim Hudson (tjh@cryptsoft.com).
15 *
16 * Copyright remains Eric Young's, and as such any Copyright notices in
17 * the code are not to be removed.
18 * If this package is used in a product, Eric Young should be given attribution
19 * as the author of the parts of the library used.
20 * This can be in the form of a textual message at program startup or
21 * in documentation (online or textual) provided with the package.
22 *
23 * Redistribution and use in source and binary forms, with or without
24 * modification, are permitted provided that the following conditions
25 * are met:
26 * 1. Redistributions of source code must retain the copyright
27 * notice, this list of conditions and the following disclaimer.
28 * 2. Redistributions in binary form must reproduce the above copyright
29 * notice, this list of conditions and the following disclaimer in the
30 * documentation and/or other materials provided with the distribution.
31 * 3. All advertising materials mentioning features or use of this software
32 * must display the following acknowledgement:
33 * "This product includes cryptographic software written by
34 * Eric Young (eay@cryptsoft.com)"
35 * The word 'cryptographic' can be left out if the rouines from the library
36 * being used are not cryptographic related :-).
37 * 4. If you include any Windows specific code (or a derivative thereof) from
38 * the apps directory (application code) you must include an acknowledgement:
39 * "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
40 *
41 * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
42 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
43 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
44 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
45 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
46 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
47 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
48 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
49 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
50 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
51 * SUCH DAMAGE.
52 *
53 * The licence and distribution terms for any publically available version or
54 * derivative of this code cannot be changed. i.e. this code cannot simply be
55 * copied and put under another distribution licence
56 * [including the GNU Public Licence.]
57 */
58
59#include <errno.h>
60#include <stdio.h>
61#include <string.h>
62#include <time.h>
63#include <unistd.h>
64
65#include <openssl/opensslconf.h>
66
67#include <openssl/err.h>
68#include <openssl/x509.h>
69
70#include "x509_local.h"
71
72typedef struct lookup_dir_hashes_st {
73 unsigned long hash;
74 int suffix;
75} BY_DIR_HASH;
76
77typedef struct lookup_dir_entry_st {
78 char *dir;
79 int dir_type;
80 STACK_OF(BY_DIR_HASH) *hashes;
81} BY_DIR_ENTRY;
82
83typedef struct lookup_dir_st {
84 BUF_MEM *buffer;
85 STACK_OF(BY_DIR_ENTRY) *dirs;
86} BY_DIR;
87
88DECLARE_STACK_OF(BY_DIR_HASH)
89DECLARE_STACK_OF(BY_DIR_ENTRY)
90
91static int dir_ctrl(X509_LOOKUP *ctx, int cmd, const char *argp, long argl,
92 char **ret);
93static int new_dir(X509_LOOKUP *lu);
94static void free_dir(X509_LOOKUP *lu);
95static int add_cert_dir(BY_DIR *ctx, const char *dir, int type);
96static int get_cert_by_subject(X509_LOOKUP *xl, int type, X509_NAME *name,
97 X509_OBJECT *ret);
98
99static const X509_LOOKUP_METHOD x509_dir_lookup = {
100 .name = "Load certs from files in a directory",
101 .new_item = new_dir,
102 .free = free_dir,
103 .ctrl = dir_ctrl,
104 .get_by_subject = get_cert_by_subject,
105};
106
107const X509_LOOKUP_METHOD *
108X509_LOOKUP_hash_dir(void)
109{
110 return &x509_dir_lookup;
111}
112LCRYPTO_ALIAS(X509_LOOKUP_hash_dir);
113
114static int
115dir_ctrl(X509_LOOKUP *ctx, int cmd, const char *argp, long argl,
116 char **retp)
117{
118 BY_DIR *ld = ctx->method_data;
119 int ret = 0;
120
121 switch (cmd) {
122 case X509_L_ADD_DIR:
123 if (argl == X509_FILETYPE_DEFAULT) {
124 ret = add_cert_dir(ld, X509_get_default_cert_dir(),
125 X509_FILETYPE_PEM);
126 if (!ret) {
127 X509error(X509_R_LOADING_CERT_DIR);
128 }
129 } else
130 ret = add_cert_dir(ld, argp, (int)argl);
131 break;
132 }
133 return ret;
134}
135
136static int
137new_dir(X509_LOOKUP *lu)
138{
139 BY_DIR *a;
140
141 if ((a = malloc(sizeof(*a))) == NULL) {
142 X509error(ERR_R_MALLOC_FAILURE);
143 return 0;
144 }
145 if ((a->buffer = BUF_MEM_new()) == NULL) {
146 X509error(ERR_R_MALLOC_FAILURE);
147 free(a);
148 return 0;
149 }
150 a->dirs = NULL;
151 lu->method_data = a;
152 return 1;
153}
154
155static void
156by_dir_hash_free(BY_DIR_HASH *hash)
157{
158 free(hash);
159}
160
161static int
162by_dir_hash_cmp(const BY_DIR_HASH * const *a,
163 const BY_DIR_HASH * const *b)
164{
165 if ((*a)->hash > (*b)->hash)
166 return 1;
167 if ((*a)->hash < (*b)->hash)
168 return -1;
169 return 0;
170}
171
172static void
173by_dir_entry_free(BY_DIR_ENTRY *ent)
174{
175 free(ent->dir);
176 sk_BY_DIR_HASH_pop_free(ent->hashes, by_dir_hash_free);
177 free(ent);
178}
179
180static void
181free_dir(X509_LOOKUP *lu)
182{
183 BY_DIR *a;
184
185 a = lu->method_data;
186 sk_BY_DIR_ENTRY_pop_free(a->dirs, by_dir_entry_free);
187 BUF_MEM_free(a->buffer);
188 free(a);
189}
190
191static int
192add_cert_dir(BY_DIR *ctx, const char *dir, int type)
193{
194 int j;
195 const char *s, *ss, *p;
196 ptrdiff_t len;
197
198 if (dir == NULL || !*dir) {
199 X509error(X509_R_INVALID_DIRECTORY);
200 return 0;
201 }
202
203 s = dir;
204 p = s;
205 do {
206 if ((*p == ':') || (*p == '\0')) {
207 BY_DIR_ENTRY *ent;
208
209 ss = s;
210 s = p + 1;
211 len = p - ss;
212 if (len == 0)
213 continue;
214 for (j = 0; j < sk_BY_DIR_ENTRY_num(ctx->dirs); j++) {
215 ent = sk_BY_DIR_ENTRY_value(ctx->dirs, j);
216 if (strlen(ent->dir) == (size_t)len &&
217 strncmp(ent->dir, ss, (size_t)len) == 0)
218 break;
219 }
220 if (j < sk_BY_DIR_ENTRY_num(ctx->dirs))
221 continue;
222 if (ctx->dirs == NULL) {
223 ctx->dirs = sk_BY_DIR_ENTRY_new_null();
224 if (ctx->dirs == NULL) {
225 X509error(ERR_R_MALLOC_FAILURE);
226 return 0;
227 }
228 }
229 ent = malloc(sizeof(*ent));
230 if (ent == NULL) {
231 X509error(ERR_R_MALLOC_FAILURE);
232 return 0;
233 }
234 ent->dir_type = type;
235 ent->hashes = sk_BY_DIR_HASH_new(by_dir_hash_cmp);
236 ent->dir = strndup(ss, (size_t)len);
237 if (ent->dir == NULL || ent->hashes == NULL) {
238 X509error(ERR_R_MALLOC_FAILURE);
239 by_dir_entry_free(ent);
240 return 0;
241 }
242 if (!sk_BY_DIR_ENTRY_push(ctx->dirs, ent)) {
243 X509error(ERR_R_MALLOC_FAILURE);
244 by_dir_entry_free(ent);
245 return 0;
246 }
247 }
248 } while (*p++ != '\0');
249 return 1;
250}
251
252static int
253get_cert_by_subject(X509_LOOKUP *xl, int type, X509_NAME *name,
254 X509_OBJECT *ret)
255{
256 BY_DIR *ctx;
257 union {
258 struct {
259 X509 st_x509;
260 X509_CINF st_x509_cinf;
261 } x509;
262 struct {
263 X509_CRL st_crl;
264 X509_CRL_INFO st_crl_info;
265 } crl;
266 } data;
267 int ok = 0;
268 int i, j, k;
269 unsigned long h;
270 BUF_MEM *b = NULL;
271 X509_OBJECT stmp, *tmp;
272 const char *postfix="";
273
274 if (name == NULL)
275 return 0;
276
277 stmp.type = type;
278 if (type == X509_LU_X509) {
279 data.x509.st_x509.cert_info = &data.x509.st_x509_cinf;
280 data.x509.st_x509_cinf.subject = name;
281 stmp.data.x509 = &data.x509.st_x509;
282 postfix="";
283 } else if (type == X509_LU_CRL) {
284 data.crl.st_crl.crl = &data.crl.st_crl_info;
285 data.crl.st_crl_info.issuer = name;
286 stmp.data.crl = &data.crl.st_crl;
287 postfix="r";
288 } else {
289 X509error(X509_R_WRONG_LOOKUP_TYPE);
290 goto finish;
291 }
292
293 if ((b = BUF_MEM_new()) == NULL) {
294 X509error(ERR_R_BUF_LIB);
295 goto finish;
296 }
297
298 ctx = xl->method_data;
299
300 h = X509_NAME_hash(name);
301 for (i = 0; i < sk_BY_DIR_ENTRY_num(ctx->dirs); i++) {
302 BY_DIR_ENTRY *ent;
303 int idx;
304 BY_DIR_HASH htmp, *hent;
305
306 ent = sk_BY_DIR_ENTRY_value(ctx->dirs, i);
307 j = strlen(ent->dir) + 1 + 8 + 6 + 1 + 1;
308 if (!BUF_MEM_grow(b, j)) {
309 X509error(ERR_R_MALLOC_FAILURE);
310 goto finish;
311 }
312 if (type == X509_LU_CRL) {
313 htmp.hash = h;
314 CRYPTO_r_lock(CRYPTO_LOCK_X509_STORE);
315 idx = sk_BY_DIR_HASH_find(ent->hashes, &htmp);
316 if (idx >= 0) {
317 hent = sk_BY_DIR_HASH_value(ent->hashes, idx);
318 k = hent->suffix;
319 } else {
320 hent = NULL;
321 k = 0;
322 }
323 CRYPTO_r_unlock(CRYPTO_LOCK_X509_STORE);
324 } else {
325 k = 0;
326 hent = NULL;
327 }
328 for (;;) {
329 (void) snprintf(b->data, b->max, "%s/%08lx.%s%d",
330 ent->dir, h, postfix, k);
331 /*
332 * Found one. Attempt to load it. This could fail for
333 * any number of reasons from the file can't be opened,
334 * the file contains garbage, etc. Clear the error stack
335 * to avoid exposing the lower level error. These all
336 * boil down to "we could not find CA/CRL".
337 */
338 if (type == X509_LU_X509) {
339 if ((X509_load_cert_file(xl, b->data,
340 ent->dir_type)) == 0) {
341 ERR_clear_error();
342 break;
343 }
344 } else if (type == X509_LU_CRL) {
345 if ((X509_load_crl_file(xl, b->data,
346 ent->dir_type)) == 0) {
347 ERR_clear_error();
348 break;
349 }
350 }
351 /* The lack of a CA or CRL will be caught higher up. */
352 k++;
353 }
354
355 /* we have added it to the cache so now pull it out again */
356 CRYPTO_w_lock(CRYPTO_LOCK_X509_STORE);
357 j = sk_X509_OBJECT_find(xl->store_ctx->objs, &stmp);
358 tmp = sk_X509_OBJECT_value(xl->store_ctx->objs, j);
359 CRYPTO_w_unlock(CRYPTO_LOCK_X509_STORE);
360
361 /* If a CRL, update the last file suffix added for this */
362 if (type == X509_LU_CRL) {
363 CRYPTO_w_lock(CRYPTO_LOCK_X509_STORE);
364 /*
365 * Look for entry again in case another thread added
366 * an entry first.
367 */
368 if (hent == NULL) {
369 htmp.hash = h;
370 idx = sk_BY_DIR_HASH_find(ent->hashes, &htmp);
371 hent = sk_BY_DIR_HASH_value(ent->hashes, idx);
372 }
373 if (hent == NULL) {
374 hent = malloc(sizeof(*hent));
375 if (hent == NULL) {
376 X509error(ERR_R_MALLOC_FAILURE);
377 CRYPTO_w_unlock(CRYPTO_LOCK_X509_STORE);
378 ok = 0;
379 goto finish;
380 }
381 hent->hash = h;
382 hent->suffix = k;
383 if (!sk_BY_DIR_HASH_push(ent->hashes, hent)) {
384 X509error(ERR_R_MALLOC_FAILURE);
385 CRYPTO_w_unlock(CRYPTO_LOCK_X509_STORE);
386 free(hent);
387 ok = 0;
388 goto finish;
389 }
390 } else if (hent->suffix < k)
391 hent->suffix = k;
392
393 CRYPTO_w_unlock(CRYPTO_LOCK_X509_STORE);
394
395 }
396
397 if (tmp != NULL) {
398 ok = 1;
399 ret->type = tmp->type;
400 memcpy(&ret->data, &tmp->data, sizeof(ret->data));
401 goto finish;
402 }
403 }
404finish:
405 BUF_MEM_free(b);
406 return ok;
407}
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