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-rw-r--r--src/lib/libcrypto/x509/by_dir.c422
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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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1/* $OpenBSD: by_dir.c,v 1.37 2015/04/11 16:03:21 deraadt 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 <sys/types.h>
60
61#include <errno.h>
62#include <stdio.h>
63#include <string.h>
64#include <time.h>
65#include <unistd.h>
66
67#include <openssl/opensslconf.h>
68
69#include <openssl/err.h>
70#include <openssl/lhash.h>
71#include <openssl/x509.h>
72
73# include <sys/stat.h>
74
75typedef struct lookup_dir_hashes_st {
76 unsigned long hash;
77 int suffix;
78} BY_DIR_HASH;
79
80typedef struct lookup_dir_entry_st {
81 char *dir;
82 int dir_type;
83 STACK_OF(BY_DIR_HASH) *hashes;
84} BY_DIR_ENTRY;
85
86typedef struct lookup_dir_st {
87 BUF_MEM *buffer;
88 STACK_OF(BY_DIR_ENTRY) *dirs;
89} BY_DIR;
90
91DECLARE_STACK_OF(BY_DIR_HASH)
92DECLARE_STACK_OF(BY_DIR_ENTRY)
93
94static int dir_ctrl(X509_LOOKUP *ctx, int cmd, const char *argp, long argl,
95 char **ret);
96static int new_dir(X509_LOOKUP *lu);
97static void free_dir(X509_LOOKUP *lu);
98static int add_cert_dir(BY_DIR *ctx, const char *dir, int type);
99static int get_cert_by_subject(X509_LOOKUP *xl, int type, X509_NAME *name,
100 X509_OBJECT *ret);
101
102static X509_LOOKUP_METHOD x509_dir_lookup = {
103 .name = "Load certs from files in a directory",
104 .new_item = new_dir,
105 .free = free_dir,
106 .init = NULL,
107 .shutdown = NULL,
108 .ctrl = dir_ctrl,
109 .get_by_subject = get_cert_by_subject,
110 .get_by_issuer_serial = NULL,
111 .get_by_fingerprint = NULL,
112 .get_by_alias = NULL,
113};
114
115X509_LOOKUP_METHOD *
116X509_LOOKUP_hash_dir(void)
117{
118 return (&x509_dir_lookup);
119}
120
121static int
122dir_ctrl(X509_LOOKUP *ctx, int cmd, const char *argp, long argl,
123 char **retp)
124{
125 int ret = 0;
126 BY_DIR *ld;
127
128 ld = (BY_DIR *)ctx->method_data;
129
130 switch (cmd) {
131 case X509_L_ADD_DIR:
132 if (argl == X509_FILETYPE_DEFAULT) {
133 ret = add_cert_dir(ld, X509_get_default_cert_dir(),
134 X509_FILETYPE_PEM);
135 if (!ret) {
136 X509err(X509_F_DIR_CTRL, X509_R_LOADING_CERT_DIR);
137 }
138 } else
139 ret = add_cert_dir(ld, argp, (int)argl);
140 break;
141 }
142 return (ret);
143}
144
145static int
146new_dir(X509_LOOKUP *lu)
147{
148 BY_DIR *a;
149
150 if ((a = malloc(sizeof(BY_DIR))) == NULL)
151 return (0);
152 if ((a->buffer = BUF_MEM_new()) == NULL) {
153 free(a);
154 return (0);
155 }
156 a->dirs = NULL;
157 lu->method_data = (char *)a;
158 return (1);
159}
160
161static void
162by_dir_hash_free(BY_DIR_HASH *hash)
163{
164 free(hash);
165}
166
167static int
168by_dir_hash_cmp(const BY_DIR_HASH * const *a,
169 const BY_DIR_HASH * const *b)
170{
171 if ((*a)->hash > (*b)->hash)
172 return 1;
173 if ((*a)->hash < (*b)->hash)
174 return -1;
175 return 0;
176}
177
178static void
179by_dir_entry_free(BY_DIR_ENTRY *ent)
180{
181 free(ent->dir);
182 if (ent->hashes)
183 sk_BY_DIR_HASH_pop_free(ent->hashes, by_dir_hash_free);
184 free(ent);
185}
186
187static void
188free_dir(X509_LOOKUP *lu)
189{
190 BY_DIR *a;
191
192 a = (BY_DIR *)lu->method_data;
193 if (a->dirs != NULL)
194 sk_BY_DIR_ENTRY_pop_free(a->dirs, by_dir_entry_free);
195 if (a->buffer != NULL)
196 BUF_MEM_free(a->buffer);
197 free(a);
198}
199
200static int
201add_cert_dir(BY_DIR *ctx, const char *dir, int type)
202{
203 int j;
204 const char *s, *ss, *p;
205 ptrdiff_t len;
206
207 if (dir == NULL || !*dir) {
208 X509err(X509_F_ADD_CERT_DIR, X509_R_INVALID_DIRECTORY);
209 return 0;
210 }
211
212 s = dir;
213 p = s;
214 do {
215 if ((*p == ':') || (*p == '\0')) {
216 BY_DIR_ENTRY *ent;
217 ss = s;
218 s = p + 1;
219 len = p - ss;
220 if (len == 0)
221 continue;
222 for (j = 0; j < sk_BY_DIR_ENTRY_num(ctx->dirs); j++) {
223 ent = sk_BY_DIR_ENTRY_value(ctx->dirs, j);
224 if (strlen(ent->dir) == (size_t)len &&
225 strncmp(ent->dir, ss, (size_t)len) == 0)
226 break;
227 }
228 if (j < sk_BY_DIR_ENTRY_num(ctx->dirs))
229 continue;
230 if (ctx->dirs == NULL) {
231 ctx->dirs = sk_BY_DIR_ENTRY_new_null();
232 if (!ctx->dirs) {
233 X509err(X509_F_ADD_CERT_DIR, ERR_R_MALLOC_FAILURE);
234 return 0;
235 }
236 }
237 ent = malloc(sizeof(BY_DIR_ENTRY));
238 if (!ent) {
239 X509err(X509_F_ADD_CERT_DIR, ERR_R_MALLOC_FAILURE);
240 return 0;
241 }
242 ent->dir_type = type;
243 ent->hashes = sk_BY_DIR_HASH_new(by_dir_hash_cmp);
244 ent->dir = strndup(ss, (size_t)len);
245 if (!ent->dir || !ent->hashes) {
246 X509err(X509_F_ADD_CERT_DIR, ERR_R_MALLOC_FAILURE);
247 by_dir_entry_free(ent);
248 return 0;
249 }
250 if (!sk_BY_DIR_ENTRY_push(ctx->dirs, ent)) {
251 X509err(X509_F_ADD_CERT_DIR, ERR_R_MALLOC_FAILURE);
252 by_dir_entry_free(ent);
253 return 0;
254 }
255 }
256 } while (*p++ != '\0');
257 return 1;
258}
259
260static int
261get_cert_by_subject(X509_LOOKUP *xl, int type, X509_NAME *name,
262 X509_OBJECT *ret)
263{
264 BY_DIR *ctx;
265 union {
266 struct {
267 X509 st_x509;
268 X509_CINF st_x509_cinf;
269 } x509;
270 struct {
271 X509_CRL st_crl;
272 X509_CRL_INFO st_crl_info;
273 } crl;
274 } data;
275 int ok = 0;
276 int i, j, k;
277 unsigned long h;
278 BUF_MEM *b = NULL;
279 X509_OBJECT stmp, *tmp;
280 const char *postfix="";
281
282 if (name == NULL)
283 return (0);
284
285 stmp.type = type;
286 if (type == X509_LU_X509) {
287 data.x509.st_x509.cert_info = &data.x509.st_x509_cinf;
288 data.x509.st_x509_cinf.subject = name;
289 stmp.data.x509 = &data.x509.st_x509;
290 postfix="";
291 } else if (type == X509_LU_CRL) {
292 data.crl.st_crl.crl = &data.crl.st_crl_info;
293 data.crl.st_crl_info.issuer = name;
294 stmp.data.crl = &data.crl.st_crl;
295 postfix="r";
296 } else {
297 X509err(X509_F_GET_CERT_BY_SUBJECT, X509_R_WRONG_LOOKUP_TYPE);
298 goto finish;
299 }
300
301 if ((b = BUF_MEM_new()) == NULL) {
302 X509err(X509_F_GET_CERT_BY_SUBJECT, ERR_R_BUF_LIB);
303 goto finish;
304 }
305
306 ctx = (BY_DIR *)xl->method_data;
307
308 h = X509_NAME_hash(name);
309 for (i = 0; i < sk_BY_DIR_ENTRY_num(ctx->dirs); i++) {
310 BY_DIR_ENTRY *ent;
311 int idx;
312 BY_DIR_HASH htmp, *hent;
313 ent = sk_BY_DIR_ENTRY_value(ctx->dirs, i);
314 j = strlen(ent->dir) + 1 + 8 + 6 + 1 + 1;
315 if (!BUF_MEM_grow(b, j)) {
316 X509err(X509_F_GET_CERT_BY_SUBJECT, ERR_R_MALLOC_FAILURE);
317 goto finish;
318 }
319 if (type == X509_LU_CRL && ent->hashes) {
320 htmp.hash = h;
321 CRYPTO_r_lock(CRYPTO_LOCK_X509_STORE);
322 idx = sk_BY_DIR_HASH_find(ent->hashes, &htmp);
323 if (idx >= 0) {
324 hent = sk_BY_DIR_HASH_value(ent->hashes, idx);
325 k = hent->suffix;
326 } else {
327 hent = NULL;
328 k = 0;
329 }
330 CRYPTO_r_unlock(CRYPTO_LOCK_X509_STORE);
331 } else {
332 k = 0;
333 hent = NULL;
334 }
335 for (;;) {
336 (void) snprintf(b->data, b->max, "%s/%08lx.%s%d",
337 ent->dir, h, postfix, k);
338
339 {
340 struct stat st;
341 if (stat(b->data, &st) < 0)
342 break;
343 }
344 /* found one. */
345 if (type == X509_LU_X509) {
346 if ((X509_load_cert_file(xl, b->data,
347 ent->dir_type)) == 0)
348 break;
349 } else if (type == X509_LU_CRL) {
350 if ((X509_load_crl_file(xl, b->data,
351 ent->dir_type)) == 0)
352 break;
353 }
354 /* else case will caught higher up */
355 k++;
356 }
357
358 /* we have added it to the cache so now pull it out again */
359 CRYPTO_w_lock(CRYPTO_LOCK_X509_STORE);
360 j = sk_X509_OBJECT_find(xl->store_ctx->objs, &stmp);
361 if (j != -1)
362 tmp = sk_X509_OBJECT_value(xl->store_ctx->objs, j);
363 else
364 tmp = NULL;
365 CRYPTO_w_unlock(CRYPTO_LOCK_X509_STORE);
366
367 /* If a CRL, update the last file suffix added for this */
368 if (type == X509_LU_CRL) {
369 CRYPTO_w_lock(CRYPTO_LOCK_X509_STORE);
370 /*
371 * Look for entry again in case another thread added
372 * an entry first.
373 */
374 if (!hent) {
375 htmp.hash = h;
376 idx = sk_BY_DIR_HASH_find(ent->hashes, &htmp);
377 if (idx >= 0)
378 hent = sk_BY_DIR_HASH_value(
379 ent->hashes, idx);
380 }
381 if (!hent) {
382 hent = malloc(sizeof(BY_DIR_HASH));
383 if (!hent) {
384 X509err(X509_F_GET_CERT_BY_SUBJECT, ERR_R_MALLOC_FAILURE);
385 CRYPTO_w_unlock(CRYPTO_LOCK_X509_STORE);
386 ok = 0;
387 goto finish;
388 }
389 hent->hash = h;
390 hent->suffix = k;
391 if (!sk_BY_DIR_HASH_push(ent->hashes, hent)) {
392 X509err(X509_F_GET_CERT_BY_SUBJECT, ERR_R_MALLOC_FAILURE);
393 CRYPTO_w_unlock(CRYPTO_LOCK_X509_STORE);
394 free(hent);
395 ok = 0;
396 goto finish;
397 }
398 } else if (hent->suffix < k)
399 hent->suffix = k;
400
401 CRYPTO_w_unlock(CRYPTO_LOCK_X509_STORE);
402
403 }
404
405 if (tmp != NULL) {
406 ok = 1;
407 ret->type = tmp->type;
408 memcpy(&ret->data, &tmp->data, sizeof(ret->data));
409 /*
410 * If we were going to up the reference count,
411 * we would need to do it on a perl 'type' basis
412 */
413 /* CRYPTO_add(&tmp->data.x509->references,1,
414 CRYPTO_LOCK_X509);*/
415 goto finish;
416 }
417 }
418finish:
419 if (b != NULL)
420 BUF_MEM_free(b);
421 return (ok);
422}
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