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d02b48c6 | 1 | /* crypto/x509/by_dir.c */ |
58964a49 | 2 | /* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com) |
d02b48c6 RE |
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. | |
0f113f3e | 8 | * |
d02b48c6 RE |
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). | |
0f113f3e | 15 | * |
d02b48c6 RE |
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. | |
0f113f3e | 22 | * |
d02b48c6 RE |
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 :-). | |
0f113f3e | 37 | * 4. If you include any Windows specific code (or a derivative thereof) from |
d02b48c6 RE |
38 | * the apps directory (application code) you must include an acknowledgement: |
39 | * "This product includes software written by Tim Hudson (tjh@cryptsoft.com)" | |
0f113f3e | 40 | * |
d02b48c6 RE |
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. | |
0f113f3e | 52 | * |
d02b48c6 RE |
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 <stdio.h> | |
60 | #include <time.h> | |
61 | #include <errno.h> | |
d02b48c6 RE |
62 | |
63 | #include "cryptlib.h" | |
17f389bb AP |
64 | |
65 | #ifndef NO_SYS_TYPES_H | |
66 | # include <sys/types.h> | |
67 | #endif | |
49e3c9d8 | 68 | #ifndef OPENSSL_NO_POSIX_IO |
17f389bb AP |
69 | # include <sys/stat.h> |
70 | #endif | |
71 | ||
ec577822 BM |
72 | #include <openssl/lhash.h> |
73 | #include <openssl/x509.h> | |
d02b48c6 | 74 | |
0f113f3e MC |
75 | typedef struct lookup_dir_hashes_st { |
76 | unsigned long hash; | |
77 | int suffix; | |
78 | } BY_DIR_HASH; | |
5d20c4fb | 79 | |
0f113f3e MC |
80 | typedef struct lookup_dir_entry_st { |
81 | char *dir; | |
82 | int dir_type; | |
83 | STACK_OF(BY_DIR_HASH) *hashes; | |
84 | } BY_DIR_ENTRY; | |
5d20c4fb | 85 | |
0f113f3e MC |
86 | typedef struct lookup_dir_st { |
87 | BUF_MEM *buffer; | |
88 | STACK_OF(BY_DIR_ENTRY) *dirs; | |
89 | } BY_DIR; | |
d02b48c6 | 90 | |
3c07d3a3 DSH |
91 | DECLARE_STACK_OF(BY_DIR_HASH) |
92 | DECLARE_STACK_OF(BY_DIR_ENTRY) | |
5d20c4fb | 93 | |
303c0028 | 94 | static int dir_ctrl(X509_LOOKUP *ctx, int cmd, const char *argp, long argl, |
0f113f3e | 95 | char **ret); |
d02b48c6 RE |
96 | static int new_dir(X509_LOOKUP *lu); |
97 | static void free_dir(X509_LOOKUP *lu); | |
0f113f3e MC |
98 | static int add_cert_dir(BY_DIR *ctx, const char *dir, int type); |
99 | static int get_cert_by_subject(X509_LOOKUP *xl, int type, X509_NAME *name, | |
100 | X509_OBJECT *ret); | |
101 | X509_LOOKUP_METHOD x509_dir_lookup = { | |
102 | "Load certs from files in a directory", | |
103 | new_dir, /* new */ | |
104 | free_dir, /* free */ | |
105 | NULL, /* init */ | |
106 | NULL, /* shutdown */ | |
107 | dir_ctrl, /* ctrl */ | |
108 | get_cert_by_subject, /* get_by_subject */ | |
109 | NULL, /* get_by_issuer_serial */ | |
110 | NULL, /* get_by_fingerprint */ | |
111 | NULL, /* get_by_alias */ | |
112 | }; | |
d02b48c6 | 113 | |
6b691a5c | 114 | X509_LOOKUP_METHOD *X509_LOOKUP_hash_dir(void) |
0f113f3e MC |
115 | { |
116 | return (&x509_dir_lookup); | |
117 | } | |
d02b48c6 | 118 | |
303c0028 | 119 | static int dir_ctrl(X509_LOOKUP *ctx, int cmd, const char *argp, long argl, |
0f113f3e MC |
120 | char **retp) |
121 | { | |
122 | int ret = 0; | |
123 | BY_DIR *ld; | |
124 | char *dir = NULL; | |
125 | ||
126 | ld = (BY_DIR *)ctx->method_data; | |
127 | ||
128 | switch (cmd) { | |
129 | case X509_L_ADD_DIR: | |
130 | if (argl == X509_FILETYPE_DEFAULT) { | |
131 | dir = (char *)getenv(X509_get_default_cert_dir_env()); | |
132 | if (dir) | |
133 | ret = add_cert_dir(ld, dir, X509_FILETYPE_PEM); | |
134 | else | |
135 | ret = add_cert_dir(ld, X509_get_default_cert_dir(), | |
136 | X509_FILETYPE_PEM); | |
137 | if (!ret) { | |
138 | X509err(X509_F_DIR_CTRL, X509_R_LOADING_CERT_DIR); | |
139 | } | |
140 | } else | |
141 | ret = add_cert_dir(ld, argp, (int)argl); | |
142 | break; | |
143 | } | |
144 | return (ret); | |
145 | } | |
d02b48c6 | 146 | |
6b691a5c | 147 | static int new_dir(X509_LOOKUP *lu) |
0f113f3e MC |
148 | { |
149 | BY_DIR *a; | |
150 | ||
b196e7d9 | 151 | if ((a = OPENSSL_malloc(sizeof(BY_DIR))) == NULL) |
0f113f3e MC |
152 | return (0); |
153 | if ((a->buffer = BUF_MEM_new()) == NULL) { | |
154 | OPENSSL_free(a); | |
155 | return (0); | |
156 | } | |
157 | a->dirs = NULL; | |
158 | lu->method_data = (char *)a; | |
159 | return (1); | |
160 | } | |
d02b48c6 | 161 | |
5d20c4fb | 162 | static void by_dir_hash_free(BY_DIR_HASH *hash) |
0f113f3e MC |
163 | { |
164 | OPENSSL_free(hash); | |
165 | } | |
166 | ||
167 | static int by_dir_hash_cmp(const BY_DIR_HASH *const *a, | |
168 | const BY_DIR_HASH *const *b) | |
169 | { | |
170 | if ((*a)->hash > (*b)->hash) | |
171 | return 1; | |
172 | if ((*a)->hash < (*b)->hash) | |
173 | return -1; | |
174 | return 0; | |
175 | } | |
5d20c4fb DSH |
176 | |
177 | static void by_dir_entry_free(BY_DIR_ENTRY *ent) | |
0f113f3e MC |
178 | { |
179 | if (ent->dir) | |
180 | OPENSSL_free(ent->dir); | |
181 | if (ent->hashes) | |
182 | sk_BY_DIR_HASH_pop_free(ent->hashes, by_dir_hash_free); | |
183 | OPENSSL_free(ent); | |
184 | } | |
5d20c4fb | 185 | |
6b691a5c | 186 | static void free_dir(X509_LOOKUP *lu) |
0f113f3e MC |
187 | { |
188 | BY_DIR *a; | |
d02b48c6 | 189 | |
0f113f3e MC |
190 | a = (BY_DIR *)lu->method_data; |
191 | if (a->dirs != NULL) | |
192 | sk_BY_DIR_ENTRY_pop_free(a->dirs, by_dir_entry_free); | |
193 | if (a->buffer != NULL) | |
194 | BUF_MEM_free(a->buffer); | |
195 | OPENSSL_free(a); | |
196 | } | |
d02b48c6 | 197 | |
6b691a5c | 198 | static int add_cert_dir(BY_DIR *ctx, const char *dir, int type) |
0f113f3e MC |
199 | { |
200 | int j, len; | |
201 | const char *s, *ss, *p; | |
202 | ||
203 | if (dir == NULL || !*dir) { | |
204 | X509err(X509_F_ADD_CERT_DIR, X509_R_INVALID_DIRECTORY); | |
205 | return 0; | |
206 | } | |
207 | ||
208 | s = dir; | |
209 | p = s; | |
210 | do { | |
211 | if ((*p == LIST_SEPARATOR_CHAR) || (*p == '\0')) { | |
212 | BY_DIR_ENTRY *ent; | |
213 | ss = s; | |
214 | s = p + 1; | |
215 | len = (int)(p - ss); | |
216 | if (len == 0) | |
217 | continue; | |
218 | for (j = 0; j < sk_BY_DIR_ENTRY_num(ctx->dirs); j++) { | |
219 | ent = sk_BY_DIR_ENTRY_value(ctx->dirs, j); | |
220 | if (strlen(ent->dir) == (size_t)len && | |
221 | strncmp(ent->dir, ss, (unsigned int)len) == 0) | |
222 | break; | |
223 | } | |
224 | if (j < sk_BY_DIR_ENTRY_num(ctx->dirs)) | |
225 | continue; | |
226 | if (ctx->dirs == NULL) { | |
227 | ctx->dirs = sk_BY_DIR_ENTRY_new_null(); | |
228 | if (!ctx->dirs) { | |
229 | X509err(X509_F_ADD_CERT_DIR, ERR_R_MALLOC_FAILURE); | |
230 | return 0; | |
231 | } | |
232 | } | |
233 | ent = OPENSSL_malloc(sizeof(BY_DIR_ENTRY)); | |
234 | if (!ent) | |
235 | return 0; | |
236 | ent->dir_type = type; | |
237 | ent->hashes = sk_BY_DIR_HASH_new(by_dir_hash_cmp); | |
238 | ent->dir = OPENSSL_malloc((unsigned int)len + 1); | |
239 | if (!ent->dir || !ent->hashes) { | |
240 | by_dir_entry_free(ent); | |
241 | return 0; | |
242 | } | |
243 | strncpy(ent->dir, ss, (unsigned int)len); | |
244 | ent->dir[len] = '\0'; | |
245 | if (!sk_BY_DIR_ENTRY_push(ctx->dirs, ent)) { | |
246 | by_dir_entry_free(ent); | |
247 | return 0; | |
248 | } | |
249 | } | |
250 | } while (*p++ != '\0'); | |
251 | return 1; | |
252 | } | |
d02b48c6 | 253 | |
6b691a5c | 254 | static int get_cert_by_subject(X509_LOOKUP *xl, int type, X509_NAME *name, |
0f113f3e MC |
255 | X509_OBJECT *ret) |
256 | { | |
257 | BY_DIR *ctx; | |
258 | union { | |
259 | struct { | |
260 | X509 st_x509; | |
261 | X509_CINF st_x509_cinf; | |
262 | } x509; | |
263 | struct { | |
264 | X509_CRL st_crl; | |
265 | X509_CRL_INFO st_crl_info; | |
266 | } crl; | |
267 | } data; | |
268 | int ok = 0; | |
269 | int i, j, k; | |
270 | unsigned long h; | |
271 | BUF_MEM *b = NULL; | |
272 | X509_OBJECT stmp, *tmp; | |
273 | const char *postfix = ""; | |
274 | ||
275 | if (name == NULL) | |
276 | return (0); | |
277 | ||
278 | stmp.type = type; | |
279 | if (type == X509_LU_X509) { | |
280 | data.x509.st_x509.cert_info = &data.x509.st_x509_cinf; | |
281 | data.x509.st_x509_cinf.subject = name; | |
282 | stmp.data.x509 = &data.x509.st_x509; | |
283 | postfix = ""; | |
284 | } else if (type == X509_LU_CRL) { | |
285 | data.crl.st_crl.crl = &data.crl.st_crl_info; | |
286 | data.crl.st_crl_info.issuer = name; | |
287 | stmp.data.crl = &data.crl.st_crl; | |
288 | postfix = "r"; | |
289 | } else { | |
290 | X509err(X509_F_GET_CERT_BY_SUBJECT, X509_R_WRONG_LOOKUP_TYPE); | |
291 | goto finish; | |
292 | } | |
293 | ||
294 | if ((b = BUF_MEM_new()) == NULL) { | |
295 | X509err(X509_F_GET_CERT_BY_SUBJECT, ERR_R_BUF_LIB); | |
296 | goto finish; | |
297 | } | |
298 | ||
299 | ctx = (BY_DIR *)xl->method_data; | |
300 | ||
301 | h = X509_NAME_hash(name); | |
302 | for (i = 0; i < sk_BY_DIR_ENTRY_num(ctx->dirs); i++) { | |
303 | BY_DIR_ENTRY *ent; | |
304 | int idx; | |
305 | BY_DIR_HASH htmp, *hent; | |
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 | X509err(X509_F_GET_CERT_BY_SUBJECT, ERR_R_MALLOC_FAILURE); | |
310 | goto finish; | |
311 | } | |
312 | if (type == X509_LU_CRL && ent->hashes) { | |
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 | char c = '/'; | |
af6dab9b | 330 | #ifdef OPENSSL_SYS_VMS |
0f113f3e MC |
331 | c = ent->dir[strlen(ent->dir) - 1]; |
332 | if (c != ':' && c != '>' && c != ']') { | |
333 | /* | |
334 | * If no separator is present, we assume the directory | |
335 | * specifier is a logical name, and add a colon. We really | |
336 | * should use better VMS routines for merging things like | |
337 | * this, but this will do for now... -- Richard Levitte | |
338 | */ | |
339 | c = ':'; | |
340 | } else { | |
341 | c = '\0'; | |
342 | } | |
af6dab9b | 343 | #endif |
0f113f3e MC |
344 | if (c == '\0') { |
345 | /* | |
346 | * This is special. When c == '\0', no directory separator | |
347 | * should be added. | |
348 | */ | |
349 | BIO_snprintf(b->data, b->max, | |
350 | "%s%08lx.%s%d", ent->dir, h, postfix, k); | |
351 | } else { | |
352 | BIO_snprintf(b->data, b->max, | |
353 | "%s%c%08lx.%s%d", ent->dir, c, h, postfix, k); | |
354 | } | |
49e3c9d8 | 355 | #ifndef OPENSSL_NO_POSIX_IO |
0f113f3e MC |
356 | # ifdef _WIN32 |
357 | # define stat _stat | |
358 | # endif | |
359 | { | |
360 | struct stat st; | |
361 | if (stat(b->data, &st) < 0) | |
362 | break; | |
363 | } | |
49e3c9d8 | 364 | #endif |
0f113f3e MC |
365 | /* found one. */ |
366 | if (type == X509_LU_X509) { | |
367 | if ((X509_load_cert_file(xl, b->data, ent->dir_type)) == 0) | |
368 | break; | |
369 | } else if (type == X509_LU_CRL) { | |
370 | if ((X509_load_crl_file(xl, b->data, ent->dir_type)) == 0) | |
371 | break; | |
372 | } | |
373 | /* else case will caught higher up */ | |
374 | k++; | |
375 | } | |
376 | ||
377 | /* | |
378 | * we have added it to the cache so now pull it out again | |
379 | */ | |
380 | CRYPTO_w_lock(CRYPTO_LOCK_X509_STORE); | |
381 | j = sk_X509_OBJECT_find(xl->store_ctx->objs, &stmp); | |
382 | if (j != -1) | |
383 | tmp = sk_X509_OBJECT_value(xl->store_ctx->objs, j); | |
384 | else | |
385 | tmp = NULL; | |
386 | CRYPTO_w_unlock(CRYPTO_LOCK_X509_STORE); | |
387 | ||
388 | /* If a CRL, update the last file suffix added for this */ | |
389 | ||
390 | if (type == X509_LU_CRL) { | |
391 | CRYPTO_w_lock(CRYPTO_LOCK_X509_STORE); | |
392 | /* | |
393 | * Look for entry again in case another thread added an entry | |
394 | * first. | |
395 | */ | |
396 | if (!hent) { | |
397 | htmp.hash = h; | |
398 | idx = sk_BY_DIR_HASH_find(ent->hashes, &htmp); | |
399 | if (idx >= 0) | |
400 | hent = sk_BY_DIR_HASH_value(ent->hashes, idx); | |
401 | } | |
402 | if (!hent) { | |
403 | hent = OPENSSL_malloc(sizeof(BY_DIR_HASH)); | |
404 | if (hent == NULL) { | |
405 | CRYPTO_w_unlock(CRYPTO_LOCK_X509_STORE); | |
406 | X509err(X509_F_GET_CERT_BY_SUBJECT, ERR_R_MALLOC_FAILURE); | |
407 | ok = 0; | |
408 | goto finish; | |
409 | } | |
410 | hent->hash = h; | |
411 | hent->suffix = k; | |
412 | if (!sk_BY_DIR_HASH_push(ent->hashes, hent)) { | |
413 | CRYPTO_w_unlock(CRYPTO_LOCK_X509_STORE); | |
414 | OPENSSL_free(hent); | |
415 | ok = 0; | |
416 | goto finish; | |
417 | } | |
418 | } else if (hent->suffix < k) | |
419 | hent->suffix = k; | |
420 | ||
421 | CRYPTO_w_unlock(CRYPTO_LOCK_X509_STORE); | |
422 | ||
423 | } | |
424 | ||
425 | if (tmp != NULL) { | |
426 | ok = 1; | |
427 | ret->type = tmp->type; | |
428 | memcpy(&ret->data, &tmp->data, sizeof(ret->data)); | |
429 | /* | |
430 | * If we were going to up the reference count, we would need to | |
431 | * do it on a perl 'type' basis | |
432 | */ | |
35a1cc90 MC |
433 | /*- CRYPTO_add(&tmp->data.x509->references,1, |
434 | CRYPTO_LOCK_X509);*/ | |
0f113f3e MC |
435 | goto finish; |
436 | } | |
437 | } | |
438 | finish: | |
439 | if (b != NULL) | |
440 | BUF_MEM_free(b); | |
441 | return (ok); | |
442 | } |