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diff --git a/src/lib/libcrypto/x509v3/v3_utl.c b/src/lib/libcrypto/x509v3/v3_utl.c
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1/* v3_utl.c */
2/* Written by Dr Stephen N Henson (shenson@bigfoot.com) for the OpenSSL
3 * project 1999.
4 */
5/* ====================================================================
6 * Copyright (c) 1999 The OpenSSL Project. All rights reserved.
7 *
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions
10 * are met:
11 *
12 * 1. Redistributions of source code must retain the above copyright
13 * notice, this list of conditions and the following disclaimer.
14 *
15 * 2. Redistributions in binary form must reproduce the above copyright
16 * notice, this list of conditions and the following disclaimer in
17 * the documentation and/or other materials provided with the
18 * distribution.
19 *
20 * 3. All advertising materials mentioning features or use of this
21 * software must display the following acknowledgment:
22 * "This product includes software developed by the OpenSSL Project
23 * for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)"
24 *
25 * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
26 * endorse or promote products derived from this software without
27 * prior written permission. For written permission, please contact
28 * licensing@OpenSSL.org.
29 *
30 * 5. Products derived from this software may not be called "OpenSSL"
31 * nor may "OpenSSL" appear in their names without prior written
32 * permission of the OpenSSL Project.
33 *
34 * 6. Redistributions of any form whatsoever must retain the following
35 * acknowledgment:
36 * "This product includes software developed by the OpenSSL Project
37 * for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)"
38 *
39 * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
40 * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
41 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
42 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OpenSSL PROJECT OR
43 * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
44 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
45 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
46 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
47 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
48 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
49 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
50 * OF THE POSSIBILITY OF SUCH DAMAGE.
51 * ====================================================================
52 *
53 * This product includes cryptographic software written by Eric Young
54 * (eay@cryptsoft.com). This product includes software written by Tim
55 * Hudson (tjh@cryptsoft.com).
56 *
57 */
58/* X509 v3 extension utilities */
59
60
61#include <stdio.h>
62#include <ctype.h>
63#include "cryptlib.h"
64#include <openssl/conf.h>
65#include <openssl/x509v3.h>
66
67static char *strip_spaces(char *name);
68static int sk_strcmp(const char * const *a, const char * const *b);
69static STACK *get_email(X509_NAME *name, STACK_OF(GENERAL_NAME) *gens);
70static void str_free(void *str);
71static int append_ia5(STACK **sk, ASN1_IA5STRING *email);
72
73/* Add a CONF_VALUE name value pair to stack */
74
75int X509V3_add_value(const char *name, const char *value,
76 STACK_OF(CONF_VALUE) **extlist)
77{
78 CONF_VALUE *vtmp = NULL;
79 char *tname = NULL, *tvalue = NULL;
80 if(name && !(tname = BUF_strdup(name))) goto err;
81 if(value && !(tvalue = BUF_strdup(value))) goto err;;
82 if(!(vtmp = (CONF_VALUE *)OPENSSL_malloc(sizeof(CONF_VALUE)))) goto err;
83 if(!*extlist && !(*extlist = sk_CONF_VALUE_new_null())) goto err;
84 vtmp->section = NULL;
85 vtmp->name = tname;
86 vtmp->value = tvalue;
87 if(!sk_CONF_VALUE_push(*extlist, vtmp)) goto err;
88 return 1;
89 err:
90 X509V3err(X509V3_F_X509V3_ADD_VALUE,ERR_R_MALLOC_FAILURE);
91 if(vtmp) OPENSSL_free(vtmp);
92 if(tname) OPENSSL_free(tname);
93 if(tvalue) OPENSSL_free(tvalue);
94 return 0;
95}
96
97int X509V3_add_value_uchar(const char *name, const unsigned char *value,
98 STACK_OF(CONF_VALUE) **extlist)
99 {
100 return X509V3_add_value(name,(const char *)value,extlist);
101 }
102
103/* Free function for STACK_OF(CONF_VALUE) */
104
105void X509V3_conf_free(CONF_VALUE *conf)
106{
107 if(!conf) return;
108 if(conf->name) OPENSSL_free(conf->name);
109 if(conf->value) OPENSSL_free(conf->value);
110 if(conf->section) OPENSSL_free(conf->section);
111 OPENSSL_free(conf);
112}
113
114int X509V3_add_value_bool(const char *name, int asn1_bool,
115 STACK_OF(CONF_VALUE) **extlist)
116{
117 if(asn1_bool) return X509V3_add_value(name, "TRUE", extlist);
118 return X509V3_add_value(name, "FALSE", extlist);
119}
120
121int X509V3_add_value_bool_nf(char *name, int asn1_bool,
122 STACK_OF(CONF_VALUE) **extlist)
123{
124 if(asn1_bool) return X509V3_add_value(name, "TRUE", extlist);
125 return 1;
126}
127
128
129char *i2s_ASN1_ENUMERATED(X509V3_EXT_METHOD *method, ASN1_ENUMERATED *a)
130{
131 BIGNUM *bntmp = NULL;
132 char *strtmp = NULL;
133 if(!a) return NULL;
134 if(!(bntmp = ASN1_ENUMERATED_to_BN(a, NULL)) ||
135 !(strtmp = BN_bn2dec(bntmp)) )
136 X509V3err(X509V3_F_I2S_ASN1_ENUMERATED,ERR_R_MALLOC_FAILURE);
137 BN_free(bntmp);
138 return strtmp;
139}
140
141char *i2s_ASN1_INTEGER(X509V3_EXT_METHOD *method, ASN1_INTEGER *a)
142{
143 BIGNUM *bntmp = NULL;
144 char *strtmp = NULL;
145 if(!a) return NULL;
146 if(!(bntmp = ASN1_INTEGER_to_BN(a, NULL)) ||
147 !(strtmp = BN_bn2dec(bntmp)) )
148 X509V3err(X509V3_F_I2S_ASN1_INTEGER,ERR_R_MALLOC_FAILURE);
149 BN_free(bntmp);
150 return strtmp;
151}
152
153ASN1_INTEGER *s2i_ASN1_INTEGER(X509V3_EXT_METHOD *method, char *value)
154{
155 BIGNUM *bn = NULL;
156 ASN1_INTEGER *aint;
157 bn = BN_new();
158 if(!value) {
159 X509V3err(X509V3_F_S2I_ASN1_INTEGER,X509V3_R_INVALID_NULL_VALUE);
160 return 0;
161 }
162 if(!BN_dec2bn(&bn, value)) {
163 X509V3err(X509V3_F_S2I_ASN1_INTEGER,X509V3_R_BN_DEC2BN_ERROR);
164 return 0;
165 }
166
167 if(!(aint = BN_to_ASN1_INTEGER(bn, NULL))) {
168 X509V3err(X509V3_F_S2I_ASN1_INTEGER,X509V3_R_BN_TO_ASN1_INTEGER_ERROR);
169 return 0;
170 }
171 BN_free(bn);
172 return aint;
173}
174
175int X509V3_add_value_int(const char *name, ASN1_INTEGER *aint,
176 STACK_OF(CONF_VALUE) **extlist)
177{
178 char *strtmp;
179 int ret;
180 if(!aint) return 1;
181 if(!(strtmp = i2s_ASN1_INTEGER(NULL, aint))) return 0;
182 ret = X509V3_add_value(name, strtmp, extlist);
183 OPENSSL_free(strtmp);
184 return ret;
185}
186
187int X509V3_get_value_bool(CONF_VALUE *value, int *asn1_bool)
188{
189 char *btmp;
190 if(!(btmp = value->value)) goto err;
191 if(!strcmp(btmp, "TRUE") || !strcmp(btmp, "true")
192 || !strcmp(btmp, "Y") || !strcmp(btmp, "y")
193 || !strcmp(btmp, "YES") || !strcmp(btmp, "yes")) {
194 *asn1_bool = 0xff;
195 return 1;
196 } else if(!strcmp(btmp, "FALSE") || !strcmp(btmp, "false")
197 || !strcmp(btmp, "N") || !strcmp(btmp, "n")
198 || !strcmp(btmp, "NO") || !strcmp(btmp, "no")) {
199 *asn1_bool = 0;
200 return 1;
201 }
202 err:
203 X509V3err(X509V3_F_X509V3_GET_VALUE_BOOL,X509V3_R_INVALID_BOOLEAN_STRING);
204 X509V3_conf_err(value);
205 return 0;
206}
207
208int X509V3_get_value_int(CONF_VALUE *value, ASN1_INTEGER **aint)
209{
210 ASN1_INTEGER *itmp;
211 if(!(itmp = s2i_ASN1_INTEGER(NULL, value->value))) {
212 X509V3_conf_err(value);
213 return 0;
214 }
215 *aint = itmp;
216 return 1;
217}
218
219#define HDR_NAME 1
220#define HDR_VALUE 2
221
222/*#define DEBUG*/
223
224STACK_OF(CONF_VALUE) *X509V3_parse_list(char *line)
225{
226 char *p, *q, c;
227 char *ntmp, *vtmp;
228 STACK_OF(CONF_VALUE) *values = NULL;
229 char *linebuf;
230 int state;
231 /* We are going to modify the line so copy it first */
232 linebuf = BUF_strdup(line);
233 state = HDR_NAME;
234 ntmp = NULL;
235 /* Go through all characters */
236 for(p = linebuf, q = linebuf; (c = *p) && (c!='\r') && (c!='\n'); p++) {
237
238 switch(state) {
239 case HDR_NAME:
240 if(c == ':') {
241 state = HDR_VALUE;
242 *p = 0;
243 ntmp = strip_spaces(q);
244 if(!ntmp) {
245 X509V3err(X509V3_F_X509V3_PARSE_LIST, X509V3_R_INVALID_NULL_NAME);
246 goto err;
247 }
248 q = p + 1;
249 } else if(c == ',') {
250 *p = 0;
251 ntmp = strip_spaces(q);
252 q = p + 1;
253#ifdef DEBUG
254 printf("%s\n", ntmp);
255#endif
256 if(!ntmp) {
257 X509V3err(X509V3_F_X509V3_PARSE_LIST, X509V3_R_INVALID_NULL_NAME);
258 goto err;
259 }
260 X509V3_add_value(ntmp, NULL, &values);
261 }
262 break ;
263
264 case HDR_VALUE:
265 if(c == ',') {
266 state = HDR_NAME;
267 *p = 0;
268 vtmp = strip_spaces(q);
269#ifdef DEBUG
270 printf("%s\n", ntmp);
271#endif
272 if(!vtmp) {
273 X509V3err(X509V3_F_X509V3_PARSE_LIST, X509V3_R_INVALID_NULL_VALUE);
274 goto err;
275 }
276 X509V3_add_value(ntmp, vtmp, &values);
277 ntmp = NULL;
278 q = p + 1;
279 }
280
281 }
282 }
283
284 if(state == HDR_VALUE) {
285 vtmp = strip_spaces(q);
286#ifdef DEBUG
287 printf("%s=%s\n", ntmp, vtmp);
288#endif
289 if(!vtmp) {
290 X509V3err(X509V3_F_X509V3_PARSE_LIST, X509V3_R_INVALID_NULL_VALUE);
291 goto err;
292 }
293 X509V3_add_value(ntmp, vtmp, &values);
294 } else {
295 ntmp = strip_spaces(q);
296#ifdef DEBUG
297 printf("%s\n", ntmp);
298#endif
299 if(!ntmp) {
300 X509V3err(X509V3_F_X509V3_PARSE_LIST, X509V3_R_INVALID_NULL_NAME);
301 goto err;
302 }
303 X509V3_add_value(ntmp, NULL, &values);
304 }
305OPENSSL_free(linebuf);
306return values;
307
308err:
309OPENSSL_free(linebuf);
310sk_CONF_VALUE_pop_free(values, X509V3_conf_free);
311return NULL;
312
313}
314
315/* Delete leading and trailing spaces from a string */
316static char *strip_spaces(char *name)
317{
318 char *p, *q;
319 /* Skip over leading spaces */
320 p = name;
321 while(*p && isspace((unsigned char)*p)) p++;
322 if(!*p) return NULL;
323 q = p + strlen(p) - 1;
324 while((q != p) && isspace((unsigned char)*q)) q--;
325 if(p != q) q[1] = 0;
326 if(!*p) return NULL;
327 return p;
328}
329
330/* hex string utilities */
331
332/* Given a buffer of length 'len' return a OPENSSL_malloc'ed string with its
333 * hex representation
334 * @@@ (Contents of buffer are always kept in ASCII, also on EBCDIC machines)
335 */
336
337char *hex_to_string(unsigned char *buffer, long len)
338{
339 char *tmp, *q;
340 unsigned char *p;
341 int i;
342 static char hexdig[] = "0123456789ABCDEF";
343 if(!buffer || !len) return NULL;
344 if(!(tmp = OPENSSL_malloc(len * 3 + 1))) {
345 X509V3err(X509V3_F_HEX_TO_STRING,ERR_R_MALLOC_FAILURE);
346 return NULL;
347 }
348 q = tmp;
349 for(i = 0, p = buffer; i < len; i++,p++) {
350 *q++ = hexdig[(*p >> 4) & 0xf];
351 *q++ = hexdig[*p & 0xf];
352 *q++ = ':';
353 }
354 q[-1] = 0;
355#ifdef CHARSET_EBCDIC
356 ebcdic2ascii(tmp, tmp, q - tmp - 1);
357#endif
358
359 return tmp;
360}
361
362/* Give a string of hex digits convert to
363 * a buffer
364 */
365
366unsigned char *string_to_hex(char *str, long *len)
367{
368 unsigned char *hexbuf, *q;
369 unsigned char ch, cl, *p;
370 if(!str) {
371 X509V3err(X509V3_F_STRING_TO_HEX,X509V3_R_INVALID_NULL_ARGUMENT);
372 return NULL;
373 }
374 if(!(hexbuf = OPENSSL_malloc(strlen(str) >> 1))) goto err;
375 for(p = (unsigned char *)str, q = hexbuf; *p;) {
376 ch = *p++;
377#ifdef CHARSET_EBCDIC
378 ch = os_toebcdic[ch];
379#endif
380 if(ch == ':') continue;
381 cl = *p++;
382#ifdef CHARSET_EBCDIC
383 cl = os_toebcdic[cl];
384#endif
385 if(!cl) {
386 X509V3err(X509V3_F_STRING_TO_HEX,X509V3_R_ODD_NUMBER_OF_DIGITS);
387 OPENSSL_free(hexbuf);
388 return NULL;
389 }
390 if(isupper(ch)) ch = tolower(ch);
391 if(isupper(cl)) cl = tolower(cl);
392
393 if((ch >= '0') && (ch <= '9')) ch -= '0';
394 else if ((ch >= 'a') && (ch <= 'f')) ch -= 'a' - 10;
395 else goto badhex;
396
397 if((cl >= '0') && (cl <= '9')) cl -= '0';
398 else if ((cl >= 'a') && (cl <= 'f')) cl -= 'a' - 10;
399 else goto badhex;
400
401 *q++ = (ch << 4) | cl;
402 }
403
404 if(len) *len = q - hexbuf;
405
406 return hexbuf;
407
408 err:
409 if(hexbuf) OPENSSL_free(hexbuf);
410 X509V3err(X509V3_F_STRING_TO_HEX,ERR_R_MALLOC_FAILURE);
411 return NULL;
412
413 badhex:
414 OPENSSL_free(hexbuf);
415 X509V3err(X509V3_F_STRING_TO_HEX,X509V3_R_ILLEGAL_HEX_DIGIT);
416 return NULL;
417
418}
419
420/* V2I name comparison function: returns zero if 'name' matches
421 * cmp or cmp.*
422 */
423
424int name_cmp(const char *name, const char *cmp)
425{
426 int len, ret;
427 char c;
428 len = strlen(cmp);
429 if((ret = strncmp(name, cmp, len))) return ret;
430 c = name[len];
431 if(!c || (c=='.')) return 0;
432 return 1;
433}
434
435static int sk_strcmp(const char * const *a, const char * const *b)
436{
437 return strcmp(*a, *b);
438}
439
440STACK *X509_get1_email(X509 *x)
441{
442 STACK_OF(GENERAL_NAME) *gens;
443 STACK *ret;
444 gens = X509_get_ext_d2i(x, NID_subject_alt_name, NULL, NULL);
445 ret = get_email(X509_get_subject_name(x), gens);
446 sk_GENERAL_NAME_pop_free(gens, GENERAL_NAME_free);
447 return ret;
448}
449
450STACK *X509_REQ_get1_email(X509_REQ *x)
451{
452 STACK_OF(GENERAL_NAME) *gens;
453 STACK_OF(X509_EXTENSION) *exts;
454 STACK *ret;
455 exts = X509_REQ_get_extensions(x);
456 gens = X509V3_get_d2i(exts, NID_subject_alt_name, NULL, NULL);
457 ret = get_email(X509_REQ_get_subject_name(x), gens);
458 sk_GENERAL_NAME_pop_free(gens, GENERAL_NAME_free);
459 sk_X509_EXTENSION_pop_free(exts, X509_EXTENSION_free);
460 return ret;
461}
462
463
464static STACK *get_email(X509_NAME *name, STACK_OF(GENERAL_NAME) *gens)
465{
466 STACK *ret = NULL;
467 X509_NAME_ENTRY *ne;
468 ASN1_IA5STRING *email;
469 GENERAL_NAME *gen;
470 int i;
471 /* Now add any email address(es) to STACK */
472 i = -1;
473 /* First supplied X509_NAME */
474 while((i = X509_NAME_get_index_by_NID(name,
475 NID_pkcs9_emailAddress, i)) > 0) {
476 ne = X509_NAME_get_entry(name, i);
477 email = X509_NAME_ENTRY_get_data(ne);
478 if(!append_ia5(&ret, email)) return NULL;
479 }
480 for(i = 0; i < sk_GENERAL_NAME_num(gens); i++)
481 {
482 gen = sk_GENERAL_NAME_value(gens, i);
483 if(gen->type != GEN_EMAIL) continue;
484 if(!append_ia5(&ret, gen->d.ia5)) return NULL;
485 }
486 return ret;
487}
488
489static void str_free(void *str)
490{
491 OPENSSL_free(str);
492}
493
494static int append_ia5(STACK **sk, ASN1_IA5STRING *email)
495{
496 char *emtmp;
497 /* First some sanity checks */
498 if(email->type != V_ASN1_IA5STRING) return 1;
499 if(!email->data || !email->length) return 1;
500 if(!*sk) *sk = sk_new(sk_strcmp);
501 if(!*sk) return 0;
502 /* Don't add duplicates */
503 if(sk_find(*sk, (char *)email->data) != -1) return 1;
504 emtmp = BUF_strdup((char *)email->data);
505 if(!emtmp || !sk_push(*sk, emtmp)) {
506 X509_email_free(*sk);
507 *sk = NULL;
508 return 0;
509 }
510 return 1;
511}
512
513void X509_email_free(STACK *sk)
514{
515 sk_pop_free(sk, str_free);
516}
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