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Commit | Line | Data |
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9aeaf1b4 | 1 | /* v3_utl.c */ |
2e597528 | 2 | /* Written by Dr Stephen N Henson (steve@openssl.org) for the OpenSSL |
4e5d3a7f | 3 | * project. |
9aeaf1b4 DSH |
4 | */ |
5 | /* ==================================================================== | |
4e5d3a7f | 6 | * Copyright (c) 1999-2003 The OpenSSL Project. All rights reserved. |
9aeaf1b4 DSH |
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 | ||
e527ba09 DSH |
60 | |
61 | #include <stdio.h> | |
9aeaf1b4 | 62 | #include <ctype.h> |
e527ba09 | 63 | #include "cryptlib.h" |
ec577822 BM |
64 | #include <openssl/conf.h> |
65 | #include <openssl/x509v3.h> | |
0f814687 | 66 | #include <openssl/bn.h> |
9aeaf1b4 | 67 | |
9aeaf1b4 | 68 | static char *strip_spaces(char *name); |
a91dedca | 69 | static int sk_strcmp(const char * const *a, const char * const *b); |
c869da88 DSH |
70 | static STACK_OF(OPENSSL_STRING) *get_email(X509_NAME *name, GENERAL_NAMES *gens); |
71 | static void str_free(OPENSSL_STRING str); | |
72 | static int append_ia5(STACK_OF(OPENSSL_STRING) **sk, ASN1_IA5STRING *email); | |
9aeaf1b4 | 73 | |
4e5d3a7f DSH |
74 | static int ipv4_from_asc(unsigned char *v4, const char *in); |
75 | static int ipv6_from_asc(unsigned char *v6, const char *in); | |
76 | static int ipv6_cb(const char *elem, int len, void *usr); | |
77 | static int ipv6_hex(unsigned char *out, const char *in, int inlen); | |
78 | ||
9aeaf1b4 DSH |
79 | /* Add a CONF_VALUE name value pair to stack */ |
80 | ||
ba404b5e DSH |
81 | int X509V3_add_value(const char *name, const char *value, |
82 | STACK_OF(CONF_VALUE) **extlist) | |
9aeaf1b4 DSH |
83 | { |
84 | CONF_VALUE *vtmp = NULL; | |
85 | char *tname = NULL, *tvalue = NULL; | |
9985bed3 | 86 | if(name && !(tname = BUF_strdup(name))) goto err; |
477fd459 | 87 | if(value && !(tvalue = BUF_strdup(value))) goto err; |
26a3a48d | 88 | if(!(vtmp = (CONF_VALUE *)OPENSSL_malloc(sizeof(CONF_VALUE)))) goto err; |
62324627 | 89 | if(!*extlist && !(*extlist = sk_CONF_VALUE_new_null())) goto err; |
9aeaf1b4 DSH |
90 | vtmp->section = NULL; |
91 | vtmp->name = tname; | |
92 | vtmp->value = tvalue; | |
ba404b5e | 93 | if(!sk_CONF_VALUE_push(*extlist, vtmp)) goto err; |
9aeaf1b4 DSH |
94 | return 1; |
95 | err: | |
96 | X509V3err(X509V3_F_X509V3_ADD_VALUE,ERR_R_MALLOC_FAILURE); | |
26a3a48d RL |
97 | if(vtmp) OPENSSL_free(vtmp); |
98 | if(tname) OPENSSL_free(tname); | |
99 | if(tvalue) OPENSSL_free(tvalue); | |
9aeaf1b4 DSH |
100 | return 0; |
101 | } | |
102 | ||
61f5b6f3 | 103 | int X509V3_add_value_uchar(const char *name, const unsigned char *value, |
ba404b5e | 104 | STACK_OF(CONF_VALUE) **extlist) |
61f5b6f3 BL |
105 | { |
106 | return X509V3_add_value(name,(const char *)value,extlist); | |
107 | } | |
108 | ||
66ab08b1 | 109 | /* Free function for STACK_OF(CONF_VALUE) */ |
9aeaf1b4 | 110 | |
6b691a5c | 111 | void X509V3_conf_free(CONF_VALUE *conf) |
9aeaf1b4 DSH |
112 | { |
113 | if(!conf) return; | |
26a3a48d RL |
114 | if(conf->name) OPENSSL_free(conf->name); |
115 | if(conf->value) OPENSSL_free(conf->value); | |
116 | if(conf->section) OPENSSL_free(conf->section); | |
117 | OPENSSL_free(conf); | |
9aeaf1b4 DSH |
118 | } |
119 | ||
ba404b5e DSH |
120 | int X509V3_add_value_bool(const char *name, int asn1_bool, |
121 | STACK_OF(CONF_VALUE) **extlist) | |
9aeaf1b4 DSH |
122 | { |
123 | if(asn1_bool) return X509V3_add_value(name, "TRUE", extlist); | |
124 | return X509V3_add_value(name, "FALSE", extlist); | |
125 | } | |
126 | ||
ba404b5e DSH |
127 | int X509V3_add_value_bool_nf(char *name, int asn1_bool, |
128 | STACK_OF(CONF_VALUE) **extlist) | |
9aeaf1b4 DSH |
129 | { |
130 | if(asn1_bool) return X509V3_add_value(name, "TRUE", extlist); | |
131 | return 1; | |
132 | } | |
133 | ||
c74f1eb9 | 134 | |
6b691a5c | 135 | char *i2s_ASN1_ENUMERATED(X509V3_EXT_METHOD *method, ASN1_ENUMERATED *a) |
c74f1eb9 DSH |
136 | { |
137 | BIGNUM *bntmp = NULL; | |
138 | char *strtmp = NULL; | |
139 | if(!a) return NULL; | |
140 | if(!(bntmp = ASN1_ENUMERATED_to_BN(a, NULL)) || | |
141 | !(strtmp = BN_bn2dec(bntmp)) ) | |
142 | X509V3err(X509V3_F_I2S_ASN1_ENUMERATED,ERR_R_MALLOC_FAILURE); | |
143 | BN_free(bntmp); | |
144 | return strtmp; | |
145 | } | |
146 | ||
6b691a5c | 147 | char *i2s_ASN1_INTEGER(X509V3_EXT_METHOD *method, ASN1_INTEGER *a) |
0ca5f8b1 DSH |
148 | { |
149 | BIGNUM *bntmp = NULL; | |
150 | char *strtmp = NULL; | |
151 | if(!a) return NULL; | |
152 | if(!(bntmp = ASN1_INTEGER_to_BN(a, NULL)) || | |
153 | !(strtmp = BN_bn2dec(bntmp)) ) | |
154 | X509V3err(X509V3_F_I2S_ASN1_INTEGER,ERR_R_MALLOC_FAILURE); | |
155 | BN_free(bntmp); | |
156 | return strtmp; | |
157 | } | |
158 | ||
6b691a5c | 159 | ASN1_INTEGER *s2i_ASN1_INTEGER(X509V3_EXT_METHOD *method, char *value) |
28a98809 DSH |
160 | { |
161 | BIGNUM *bn = NULL; | |
162 | ASN1_INTEGER *aint; | |
8e8972bb DSH |
163 | int isneg, ishex; |
164 | int ret; | |
8e8972bb | 165 | if (!value) { |
28a98809 DSH |
166 | X509V3err(X509V3_F_S2I_ASN1_INTEGER,X509V3_R_INVALID_NULL_VALUE); |
167 | return 0; | |
168 | } | |
2232e262 | 169 | bn = BN_new(); |
8e8972bb DSH |
170 | if (value[0] == '-') { |
171 | value++; | |
172 | isneg = 1; | |
173 | } else isneg = 0; | |
174 | ||
175 | if (value[0] == '0' && ((value[1] == 'x') || (value[1] == 'X'))) { | |
176 | value += 2; | |
177 | ishex = 1; | |
178 | } else ishex = 0; | |
179 | ||
180 | if (ishex) ret = BN_hex2bn(&bn, value); | |
181 | else ret = BN_dec2bn(&bn, value); | |
182 | ||
2232e262 DSH |
183 | if (!ret || value[ret]) { |
184 | BN_free(bn); | |
28a98809 DSH |
185 | X509V3err(X509V3_F_S2I_ASN1_INTEGER,X509V3_R_BN_DEC2BN_ERROR); |
186 | return 0; | |
187 | } | |
188 | ||
8e8972bb DSH |
189 | if (isneg && BN_is_zero(bn)) isneg = 0; |
190 | ||
191 | aint = BN_to_ASN1_INTEGER(bn, NULL); | |
192 | BN_free(bn); | |
193 | if (!aint) { | |
28a98809 DSH |
194 | X509V3err(X509V3_F_S2I_ASN1_INTEGER,X509V3_R_BN_TO_ASN1_INTEGER_ERROR); |
195 | return 0; | |
196 | } | |
8e8972bb | 197 | if (isneg) aint->type |= V_ASN1_NEG; |
28a98809 DSH |
198 | return aint; |
199 | } | |
200 | ||
6b691a5c | 201 | int X509V3_add_value_int(const char *name, ASN1_INTEGER *aint, |
ba404b5e | 202 | STACK_OF(CONF_VALUE) **extlist) |
9aeaf1b4 | 203 | { |
9aeaf1b4 DSH |
204 | char *strtmp; |
205 | int ret; | |
206 | if(!aint) return 1; | |
0ca5f8b1 | 207 | if(!(strtmp = i2s_ASN1_INTEGER(NULL, aint))) return 0; |
9aeaf1b4 | 208 | ret = X509V3_add_value(name, strtmp, extlist); |
26a3a48d | 209 | OPENSSL_free(strtmp); |
9aeaf1b4 DSH |
210 | return ret; |
211 | } | |
212 | ||
6b691a5c | 213 | int X509V3_get_value_bool(CONF_VALUE *value, int *asn1_bool) |
9aeaf1b4 DSH |
214 | { |
215 | char *btmp; | |
216 | if(!(btmp = value->value)) goto err; | |
217 | if(!strcmp(btmp, "TRUE") || !strcmp(btmp, "true") | |
218 | || !strcmp(btmp, "Y") || !strcmp(btmp, "y") | |
219 | || !strcmp(btmp, "YES") || !strcmp(btmp, "yes")) { | |
220 | *asn1_bool = 0xff; | |
221 | return 1; | |
222 | } else if(!strcmp(btmp, "FALSE") || !strcmp(btmp, "false") | |
223 | || !strcmp(btmp, "N") || !strcmp(btmp, "n") | |
224 | || !strcmp(btmp, "NO") || !strcmp(btmp, "no")) { | |
225 | *asn1_bool = 0; | |
226 | return 1; | |
227 | } | |
228 | err: | |
28a98809 | 229 | X509V3err(X509V3_F_X509V3_GET_VALUE_BOOL,X509V3_R_INVALID_BOOLEAN_STRING); |
9aeaf1b4 DSH |
230 | X509V3_conf_err(value); |
231 | return 0; | |
232 | } | |
233 | ||
6b691a5c | 234 | int X509V3_get_value_int(CONF_VALUE *value, ASN1_INTEGER **aint) |
9aeaf1b4 | 235 | { |
28a98809 DSH |
236 | ASN1_INTEGER *itmp; |
237 | if(!(itmp = s2i_ASN1_INTEGER(NULL, value->value))) { | |
9aeaf1b4 DSH |
238 | X509V3_conf_err(value); |
239 | return 0; | |
240 | } | |
28a98809 | 241 | *aint = itmp; |
9aeaf1b4 DSH |
242 | return 1; |
243 | } | |
244 | ||
245 | #define HDR_NAME 1 | |
246 | #define HDR_VALUE 2 | |
247 | ||
248 | /*#define DEBUG*/ | |
249 | ||
535d79da | 250 | STACK_OF(CONF_VALUE) *X509V3_parse_list(const char *line) |
9aeaf1b4 DSH |
251 | { |
252 | char *p, *q, c; | |
253 | char *ntmp, *vtmp; | |
ba404b5e | 254 | STACK_OF(CONF_VALUE) *values = NULL; |
9aeaf1b4 DSH |
255 | char *linebuf; |
256 | int state; | |
257 | /* We are going to modify the line so copy it first */ | |
9985bed3 | 258 | linebuf = BUF_strdup(line); |
9aeaf1b4 DSH |
259 | state = HDR_NAME; |
260 | ntmp = NULL; | |
261 | /* Go through all characters */ | |
262 | for(p = linebuf, q = linebuf; (c = *p) && (c!='\r') && (c!='\n'); p++) { | |
263 | ||
264 | switch(state) { | |
265 | case HDR_NAME: | |
266 | if(c == ':') { | |
267 | state = HDR_VALUE; | |
268 | *p = 0; | |
269 | ntmp = strip_spaces(q); | |
270 | if(!ntmp) { | |
271 | X509V3err(X509V3_F_X509V3_PARSE_LIST, X509V3_R_INVALID_NULL_NAME); | |
272 | goto err; | |
273 | } | |
274 | q = p + 1; | |
275 | } else if(c == ',') { | |
276 | *p = 0; | |
277 | ntmp = strip_spaces(q); | |
278 | q = p + 1; | |
59dbdb51 | 279 | #if 0 |
9aeaf1b4 DSH |
280 | printf("%s\n", ntmp); |
281 | #endif | |
282 | if(!ntmp) { | |
283 | X509V3err(X509V3_F_X509V3_PARSE_LIST, X509V3_R_INVALID_NULL_NAME); | |
284 | goto err; | |
285 | } | |
286 | X509V3_add_value(ntmp, NULL, &values); | |
287 | } | |
288 | break ; | |
289 | ||
290 | case HDR_VALUE: | |
291 | if(c == ',') { | |
292 | state = HDR_NAME; | |
293 | *p = 0; | |
294 | vtmp = strip_spaces(q); | |
59dbdb51 | 295 | #if 0 |
9aeaf1b4 DSH |
296 | printf("%s\n", ntmp); |
297 | #endif | |
298 | if(!vtmp) { | |
299 | X509V3err(X509V3_F_X509V3_PARSE_LIST, X509V3_R_INVALID_NULL_VALUE); | |
300 | goto err; | |
301 | } | |
302 | X509V3_add_value(ntmp, vtmp, &values); | |
303 | ntmp = NULL; | |
304 | q = p + 1; | |
305 | } | |
306 | ||
307 | } | |
308 | } | |
309 | ||
310 | if(state == HDR_VALUE) { | |
311 | vtmp = strip_spaces(q); | |
59dbdb51 | 312 | #if 0 |
9aeaf1b4 DSH |
313 | printf("%s=%s\n", ntmp, vtmp); |
314 | #endif | |
315 | if(!vtmp) { | |
316 | X509V3err(X509V3_F_X509V3_PARSE_LIST, X509V3_R_INVALID_NULL_VALUE); | |
317 | goto err; | |
318 | } | |
319 | X509V3_add_value(ntmp, vtmp, &values); | |
320 | } else { | |
321 | ntmp = strip_spaces(q); | |
59dbdb51 | 322 | #if 0 |
9aeaf1b4 DSH |
323 | printf("%s\n", ntmp); |
324 | #endif | |
325 | if(!ntmp) { | |
326 | X509V3err(X509V3_F_X509V3_PARSE_LIST, X509V3_R_INVALID_NULL_NAME); | |
327 | goto err; | |
328 | } | |
329 | X509V3_add_value(ntmp, NULL, &values); | |
330 | } | |
26a3a48d | 331 | OPENSSL_free(linebuf); |
9aeaf1b4 DSH |
332 | return values; |
333 | ||
334 | err: | |
26a3a48d | 335 | OPENSSL_free(linebuf); |
ba404b5e | 336 | sk_CONF_VALUE_pop_free(values, X509V3_conf_free); |
9aeaf1b4 DSH |
337 | return NULL; |
338 | ||
339 | } | |
340 | ||
341 | /* Delete leading and trailing spaces from a string */ | |
6b691a5c | 342 | static char *strip_spaces(char *name) |
9aeaf1b4 DSH |
343 | { |
344 | char *p, *q; | |
345 | /* Skip over leading spaces */ | |
346 | p = name; | |
84a370a4 | 347 | while(*p && isspace((unsigned char)*p)) p++; |
9aeaf1b4 DSH |
348 | if(!*p) return NULL; |
349 | q = p + strlen(p) - 1; | |
84a370a4 | 350 | while((q != p) && isspace((unsigned char)*q)) q--; |
9aeaf1b4 DSH |
351 | if(p != q) q[1] = 0; |
352 | if(!*p) return NULL; | |
353 | return p; | |
354 | } | |
175b0942 DSH |
355 | |
356 | /* hex string utilities */ | |
357 | ||
26a3a48d | 358 | /* Given a buffer of length 'len' return a OPENSSL_malloc'ed string with its |
175b0942 | 359 | * hex representation |
97d8e82c | 360 | * @@@ (Contents of buffer are always kept in ASCII, also on EBCDIC machines) |
175b0942 DSH |
361 | */ |
362 | ||
376bf1d4 | 363 | char *hex_to_string(const unsigned char *buffer, long len) |
175b0942 DSH |
364 | { |
365 | char *tmp, *q; | |
376bf1d4 | 366 | const unsigned char *p; |
175b0942 | 367 | int i; |
af32f9fd | 368 | const static char hexdig[] = "0123456789ABCDEF"; |
175b0942 | 369 | if(!buffer || !len) return NULL; |
26a3a48d | 370 | if(!(tmp = OPENSSL_malloc(len * 3 + 1))) { |
175b0942 DSH |
371 | X509V3err(X509V3_F_HEX_TO_STRING,ERR_R_MALLOC_FAILURE); |
372 | return NULL; | |
373 | } | |
374 | q = tmp; | |
375 | for(i = 0, p = buffer; i < len; i++,p++) { | |
376 | *q++ = hexdig[(*p >> 4) & 0xf]; | |
377 | *q++ = hexdig[*p & 0xf]; | |
378 | *q++ = ':'; | |
379 | } | |
380 | q[-1] = 0; | |
97d8e82c RL |
381 | #ifdef CHARSET_EBCDIC |
382 | ebcdic2ascii(tmp, tmp, q - tmp - 1); | |
383 | #endif | |
384 | ||
175b0942 DSH |
385 | return tmp; |
386 | } | |
387 | ||
388 | /* Give a string of hex digits convert to | |
389 | * a buffer | |
390 | */ | |
391 | ||
376bf1d4 | 392 | unsigned char *string_to_hex(const char *str, long *len) |
175b0942 DSH |
393 | { |
394 | unsigned char *hexbuf, *q; | |
395 | unsigned char ch, cl, *p; | |
396 | if(!str) { | |
397 | X509V3err(X509V3_F_STRING_TO_HEX,X509V3_R_INVALID_NULL_ARGUMENT); | |
398 | return NULL; | |
399 | } | |
26a3a48d | 400 | if(!(hexbuf = OPENSSL_malloc(strlen(str) >> 1))) goto err; |
175b0942 DSH |
401 | for(p = (unsigned char *)str, q = hexbuf; *p;) { |
402 | ch = *p++; | |
97d8e82c RL |
403 | #ifdef CHARSET_EBCDIC |
404 | ch = os_toebcdic[ch]; | |
405 | #endif | |
175b0942 DSH |
406 | if(ch == ':') continue; |
407 | cl = *p++; | |
97d8e82c RL |
408 | #ifdef CHARSET_EBCDIC |
409 | cl = os_toebcdic[cl]; | |
410 | #endif | |
175b0942 DSH |
411 | if(!cl) { |
412 | X509V3err(X509V3_F_STRING_TO_HEX,X509V3_R_ODD_NUMBER_OF_DIGITS); | |
26a3a48d | 413 | OPENSSL_free(hexbuf); |
175b0942 DSH |
414 | return NULL; |
415 | } | |
416 | if(isupper(ch)) ch = tolower(ch); | |
417 | if(isupper(cl)) cl = tolower(cl); | |
418 | ||
419 | if((ch >= '0') && (ch <= '9')) ch -= '0'; | |
420 | else if ((ch >= 'a') && (ch <= 'f')) ch -= 'a' - 10; | |
421 | else goto badhex; | |
422 | ||
423 | if((cl >= '0') && (cl <= '9')) cl -= '0'; | |
424 | else if ((cl >= 'a') && (cl <= 'f')) cl -= 'a' - 10; | |
425 | else goto badhex; | |
426 | ||
427 | *q++ = (ch << 4) | cl; | |
428 | } | |
429 | ||
430 | if(len) *len = q - hexbuf; | |
431 | ||
432 | return hexbuf; | |
433 | ||
434 | err: | |
26a3a48d | 435 | if(hexbuf) OPENSSL_free(hexbuf); |
175b0942 DSH |
436 | X509V3err(X509V3_F_STRING_TO_HEX,ERR_R_MALLOC_FAILURE); |
437 | return NULL; | |
438 | ||
439 | badhex: | |
26a3a48d | 440 | OPENSSL_free(hexbuf); |
175b0942 DSH |
441 | X509V3err(X509V3_F_STRING_TO_HEX,X509V3_R_ILLEGAL_HEX_DIGIT); |
442 | return NULL; | |
443 | ||
444 | } | |
d08d8da4 DSH |
445 | |
446 | /* V2I name comparison function: returns zero if 'name' matches | |
447 | * cmp or cmp.* | |
448 | */ | |
449 | ||
6b691a5c | 450 | int name_cmp(const char *name, const char *cmp) |
d08d8da4 DSH |
451 | { |
452 | int len, ret; | |
453 | char c; | |
454 | len = strlen(cmp); | |
455 | if((ret = strncmp(name, cmp, len))) return ret; | |
456 | c = name[len]; | |
457 | if(!c || (c=='.')) return 0; | |
458 | return 1; | |
459 | } | |
a91dedca DSH |
460 | |
461 | static int sk_strcmp(const char * const *a, const char * const *b) | |
462 | { | |
463 | return strcmp(*a, *b); | |
464 | } | |
465 | ||
c869da88 | 466 | STACK_OF(OPENSSL_STRING) *X509_get1_email(X509 *x) |
a91dedca | 467 | { |
9d6b1ce6 | 468 | GENERAL_NAMES *gens; |
c869da88 | 469 | STACK_OF(OPENSSL_STRING) *ret; |
5ce278a7 | 470 | |
a91dedca DSH |
471 | gens = X509_get_ext_d2i(x, NID_subject_alt_name, NULL, NULL); |
472 | ret = get_email(X509_get_subject_name(x), gens); | |
473 | sk_GENERAL_NAME_pop_free(gens, GENERAL_NAME_free); | |
474 | return ret; | |
475 | } | |
476 | ||
c869da88 | 477 | STACK_OF(OPENSSL_STRING) *X509_get1_ocsp(X509 *x) |
67c8e7f4 DSH |
478 | { |
479 | AUTHORITY_INFO_ACCESS *info; | |
c869da88 | 480 | STACK_OF(OPENSSL_STRING) *ret = NULL; |
67c8e7f4 | 481 | int i; |
5ce278a7 | 482 | |
67c8e7f4 DSH |
483 | info = X509_get_ext_d2i(x, NID_info_access, NULL, NULL); |
484 | if (!info) | |
485 | return NULL; | |
486 | for (i = 0; i < sk_ACCESS_DESCRIPTION_num(info); i++) | |
487 | { | |
488 | ACCESS_DESCRIPTION *ad = sk_ACCESS_DESCRIPTION_value(info, i); | |
489 | if (OBJ_obj2nid(ad->method) == NID_ad_OCSP) | |
490 | { | |
491 | if (ad->location->type == GEN_URI) | |
492 | { | |
493 | if (!append_ia5(&ret, ad->location->d.uniformResourceIdentifier)) | |
494 | break; | |
495 | } | |
496 | } | |
497 | } | |
498 | AUTHORITY_INFO_ACCESS_free(info); | |
499 | return ret; | |
500 | } | |
501 | ||
c869da88 | 502 | STACK_OF(OPENSSL_STRING) *X509_REQ_get1_email(X509_REQ *x) |
a91dedca | 503 | { |
9d6b1ce6 | 504 | GENERAL_NAMES *gens; |
a91dedca | 505 | STACK_OF(X509_EXTENSION) *exts; |
c869da88 | 506 | STACK_OF(OPENSSL_STRING) *ret; |
5ce278a7 | 507 | |
a91dedca DSH |
508 | exts = X509_REQ_get_extensions(x); |
509 | gens = X509V3_get_d2i(exts, NID_subject_alt_name, NULL, NULL); | |
510 | ret = get_email(X509_REQ_get_subject_name(x), gens); | |
511 | sk_GENERAL_NAME_pop_free(gens, GENERAL_NAME_free); | |
512 | sk_X509_EXTENSION_pop_free(exts, X509_EXTENSION_free); | |
513 | return ret; | |
514 | } | |
515 | ||
516 | ||
c869da88 | 517 | static STACK_OF(OPENSSL_STRING) *get_email(X509_NAME *name, GENERAL_NAMES *gens) |
a91dedca | 518 | { |
c869da88 | 519 | STACK_OF(OPENSSL_STRING) *ret = NULL; |
a91dedca DSH |
520 | X509_NAME_ENTRY *ne; |
521 | ASN1_IA5STRING *email; | |
522 | GENERAL_NAME *gen; | |
523 | int i; | |
524 | /* Now add any email address(es) to STACK */ | |
525 | i = -1; | |
526 | /* First supplied X509_NAME */ | |
527 | while((i = X509_NAME_get_index_by_NID(name, | |
65caee44 | 528 | NID_pkcs9_emailAddress, i)) >= 0) { |
a91dedca DSH |
529 | ne = X509_NAME_get_entry(name, i); |
530 | email = X509_NAME_ENTRY_get_data(ne); | |
531 | if(!append_ia5(&ret, email)) return NULL; | |
532 | } | |
533 | for(i = 0; i < sk_GENERAL_NAME_num(gens); i++) | |
534 | { | |
535 | gen = sk_GENERAL_NAME_value(gens, i); | |
536 | if(gen->type != GEN_EMAIL) continue; | |
537 | if(!append_ia5(&ret, gen->d.ia5)) return NULL; | |
538 | } | |
539 | return ret; | |
540 | } | |
541 | ||
c869da88 | 542 | static void str_free(OPENSSL_STRING str) |
a91dedca DSH |
543 | { |
544 | OPENSSL_free(str); | |
545 | } | |
546 | ||
c869da88 | 547 | static int append_ia5(STACK_OF(OPENSSL_STRING) **sk, ASN1_IA5STRING *email) |
a91dedca DSH |
548 | { |
549 | char *emtmp; | |
550 | /* First some sanity checks */ | |
551 | if(email->type != V_ASN1_IA5STRING) return 1; | |
552 | if(!email->data || !email->length) return 1; | |
c869da88 | 553 | if(!*sk) *sk = sk_OPENSSL_STRING_new(sk_strcmp); |
a91dedca DSH |
554 | if(!*sk) return 0; |
555 | /* Don't add duplicates */ | |
c869da88 | 556 | if(sk_OPENSSL_STRING_find(*sk, (char *)email->data) != -1) return 1; |
d4cdbab9 | 557 | emtmp = BUF_strdup((char *)email->data); |
c869da88 | 558 | if(!emtmp || !sk_OPENSSL_STRING_push(*sk, emtmp)) { |
a91dedca DSH |
559 | X509_email_free(*sk); |
560 | *sk = NULL; | |
561 | return 0; | |
562 | } | |
563 | return 1; | |
564 | } | |
565 | ||
c869da88 | 566 | void X509_email_free(STACK_OF(OPENSSL_STRING) *sk) |
a91dedca | 567 | { |
c869da88 | 568 | sk_OPENSSL_STRING_pop_free(sk, str_free); |
a91dedca | 569 | } |
4e5d3a7f | 570 | |
d88926f1 | 571 | typedef int (*equal_fn)(const unsigned char *pattern, size_t pattern_len, |
397a8e74 VD |
572 | const unsigned char *subject, size_t subject_len, |
573 | unsigned int flags); | |
d88926f1 | 574 | |
a09e4d24 VD |
575 | /* Skip pattern prefix to match "wildcard" subject */ |
576 | static void skip_prefix(const unsigned char **p, size_t *plen, | |
577 | const unsigned char *subject, size_t subject_len, | |
578 | unsigned int flags) | |
579 | { | |
580 | const unsigned char *pattern = *p; | |
581 | size_t pattern_len = *plen; | |
582 | ||
583 | /* | |
584 | * If subject starts with a leading '.' followed by more octets, and | |
585 | * pattern is longer, compare just an equal-length suffix with the | |
586 | * full subject (starting at the '.'), provided the prefix contains | |
7241a4c7 | 587 | * no NULs. |
a09e4d24 | 588 | */ |
7241a4c7 | 589 | if ((flags & _X509_CHECK_FLAG_DOT_SUBDOMAINS) == 0) |
a09e4d24 VD |
590 | return; |
591 | ||
592 | while (pattern_len > subject_len && *pattern) | |
593 | { | |
594 | if ((flags & X509_CHECK_FLAG_SINGLE_LABEL_SUBDOMAINS) && | |
595 | *pattern == '.') | |
596 | break; | |
597 | ++pattern; | |
598 | --pattern_len; | |
599 | } | |
600 | ||
601 | /* Skip if entire prefix acceptable */ | |
602 | if (pattern_len == subject_len) | |
603 | { | |
604 | *p = pattern; | |
605 | *plen = pattern_len; | |
606 | } | |
607 | } | |
608 | ||
d88926f1 DSH |
609 | /* Compare while ASCII ignoring case. */ |
610 | static int equal_nocase(const unsigned char *pattern, size_t pattern_len, | |
397a8e74 | 611 | const unsigned char *subject, size_t subject_len, |
a09e4d24 | 612 | unsigned int flags) |
d88926f1 | 613 | { |
a09e4d24 | 614 | skip_prefix(&pattern, &pattern_len, subject, subject_len, flags); |
d88926f1 DSH |
615 | if (pattern_len != subject_len) |
616 | return 0; | |
617 | while (pattern_len) | |
618 | { | |
619 | unsigned char l = *pattern; | |
620 | unsigned char r = *subject; | |
621 | /* The pattern must not contain NUL characters. */ | |
622 | if (l == 0) | |
623 | return 0; | |
624 | if (l != r) | |
625 | { | |
626 | if ('A' <= l && l <= 'Z') | |
627 | l = (l - 'A') + 'a'; | |
628 | if ('A' <= r && r <= 'Z') | |
629 | r = (r - 'A') + 'a'; | |
630 | if (l != r) | |
631 | return 0; | |
632 | } | |
633 | ++pattern; | |
634 | ++subject; | |
635 | --pattern_len; | |
636 | } | |
637 | return 1; | |
638 | } | |
639 | ||
640 | /* Compare using memcmp. */ | |
641 | static int equal_case(const unsigned char *pattern, size_t pattern_len, | |
397a8e74 | 642 | const unsigned char *subject, size_t subject_len, |
a09e4d24 | 643 | unsigned int flags) |
d88926f1 | 644 | { |
a09e4d24 | 645 | skip_prefix(&pattern, &pattern_len, subject, subject_len, flags); |
d88926f1 DSH |
646 | if (pattern_len != subject_len) |
647 | return 0; | |
648 | return !memcmp(pattern, subject, pattern_len); | |
649 | } | |
650 | ||
651 | /* RFC 5280, section 7.5, requires that only the domain is compared in | |
652 | a case-insensitive manner. */ | |
653 | static int equal_email(const unsigned char *a, size_t a_len, | |
397a8e74 VD |
654 | const unsigned char *b, size_t b_len, |
655 | unsigned int unused_flags) | |
d88926f1 DSH |
656 | { |
657 | size_t i = a_len; | |
658 | if (a_len != b_len) | |
659 | return 0; | |
660 | /* We search backwards for the '@' character, so that we do | |
661 | not have to deal with quoted local-parts. The domain part | |
662 | is compared in a case-insensitive manner. */ | |
663 | while (i > 0) | |
664 | { | |
665 | --i; | |
666 | if (a[i] == '@' || b[i] == '@') | |
667 | { | |
668 | if (!equal_nocase(a + i, a_len - i, | |
397a8e74 | 669 | b + i, a_len - i, 0)) |
d88926f1 DSH |
670 | return 0; |
671 | break; | |
672 | } | |
673 | } | |
674 | if (i == 0) | |
675 | i = a_len; | |
397a8e74 | 676 | return equal_case(a, i, b, i, 0); |
d88926f1 DSH |
677 | } |
678 | ||
679 | /* Compare the prefix and suffix with the subject, and check that the | |
680 | characters in-between are valid. */ | |
681 | static int wildcard_match(const unsigned char *prefix, size_t prefix_len, | |
682 | const unsigned char *suffix, size_t suffix_len, | |
397a8e74 VD |
683 | const unsigned char *subject, size_t subject_len, |
684 | unsigned int flags) | |
d88926f1 DSH |
685 | { |
686 | const unsigned char *wildcard_start; | |
687 | const unsigned char *wildcard_end; | |
688 | const unsigned char *p; | |
397a8e74 VD |
689 | int allow_multi = 0; |
690 | int allow_idna = 0; | |
691 | ||
d88926f1 DSH |
692 | if (subject_len < prefix_len + suffix_len) |
693 | return 0; | |
397a8e74 | 694 | if (!equal_nocase(prefix, prefix_len, subject, prefix_len, flags)) |
d88926f1 DSH |
695 | return 0; |
696 | wildcard_start = subject + prefix_len; | |
697 | wildcard_end = subject + (subject_len - suffix_len); | |
397a8e74 | 698 | if (!equal_nocase(wildcard_end, suffix_len, suffix, suffix_len, flags)) |
d88926f1 | 699 | return 0; |
397a8e74 VD |
700 | /* |
701 | * If the wildcard makes up the entire first label, it must match at | |
702 | * least one character. | |
703 | */ | |
704 | if (prefix_len == 0 && *suffix == '.') | |
705 | { | |
706 | if (wildcard_start == wildcard_end) | |
707 | return 0; | |
708 | allow_idna = 1; | |
709 | if (flags & X509_CHECK_FLAG_MULTI_LABEL_WILDCARDS) | |
710 | allow_multi = 1; | |
711 | } | |
712 | /* IDNA labels cannot match partial wildcards */ | |
713 | if (!allow_idna && | |
714 | subject_len >= 4 && strncasecmp((char *)subject, "xn--", 4) == 0) | |
d88926f1 | 715 | return 0; |
397a8e74 VD |
716 | /* The wildcard may match a literal '*' */ |
717 | if (wildcard_end == wildcard_start + 1 && *wildcard_start == '*') | |
718 | return 1; | |
719 | /* | |
720 | * Check that the part matched by the wildcard contains only | |
721 | * permitted characters and only matches a single label unless | |
722 | * allow_multi is set. | |
723 | */ | |
d88926f1 DSH |
724 | for (p = wildcard_start; p != wildcard_end; ++p) |
725 | if (!(('0' <= *p && *p <= '9') || | |
726 | ('A' <= *p && *p <= 'Z') || | |
727 | ('a' <= *p && *p <= 'z') || | |
397a8e74 | 728 | *p == '-' || (allow_multi && *p == '.'))) |
d88926f1 DSH |
729 | return 0; |
730 | return 1; | |
731 | } | |
732 | ||
397a8e74 VD |
733 | #define LABEL_START (1 << 0) |
734 | #define LABEL_END (1 << 1) | |
735 | #define LABEL_HYPHEN (1 << 2) | |
736 | #define LABEL_IDNA (1 << 3) | |
d88926f1 | 737 | |
397a8e74 VD |
738 | static const unsigned char *valid_star(const unsigned char *p, size_t len, |
739 | unsigned int flags) | |
d88926f1 | 740 | { |
397a8e74 VD |
741 | const unsigned char *star = 0; |
742 | size_t i; | |
743 | int state = LABEL_START; | |
744 | int dots = 0; | |
745 | for (i = 0; i < len; ++i) | |
d88926f1 | 746 | { |
397a8e74 VD |
747 | /* |
748 | * Locate first and only legal wildcard, either at the start | |
749 | * or end of a non-IDNA first and not final label. | |
750 | */ | |
751 | if (p[i] == '*') | |
752 | { | |
753 | int atstart = (state & LABEL_START); | |
754 | int atend = (i == len - 1 || p[i+i] == '.'); | |
31d1d374 | 755 | /*- |
397a8e74 VD |
756 | * At most one wildcard per pattern. |
757 | * No wildcards in IDNA labels. | |
758 | * No wildcards after the first label. | |
759 | */ | |
760 | if (star != NULL || (state & LABEL_IDNA) != 0 || dots) | |
761 | return NULL; | |
762 | /* Only full-label '*.example.com' wildcards? */ | |
763 | if ((flags & X509_CHECK_FLAG_NO_PARTIAL_WILDCARDS) | |
764 | && (!atstart || !atend)) | |
765 | return NULL; | |
766 | /* No 'foo*bar' wildcards */ | |
767 | if (!atstart && !atend) | |
768 | return NULL; | |
769 | star = &p[i]; | |
770 | state &= ~LABEL_START; | |
771 | } | |
397a8e74 VD |
772 | else if (('a' <= p[i] && p[i] <= 'z') |
773 | || ('A' <= p[i] && p[i] <= 'Z') | |
774 | || ('0' <= p[i] && p[i] <= '9')) | |
775 | { | |
31d1d374 RS |
776 | if ((state & LABEL_START) != 0 |
777 | && len - i >= 4 | |
778 | && strncasecmp((char *)&p[i], "xn--", 4) == 0) | |
779 | state |= LABEL_IDNA; | |
780 | state &= ~(LABEL_HYPHEN|LABEL_START); | |
397a8e74 VD |
781 | } |
782 | else if (p[i] == '.') | |
783 | { | |
31d1d374 | 784 | if ((state & (LABEL_HYPHEN | LABEL_START)) != 0) |
397a8e74 VD |
785 | return NULL; |
786 | state = LABEL_START; | |
787 | ++dots; | |
788 | } | |
789 | else if (p[i] == '-') | |
790 | { | |
31d1d374 | 791 | if ((state & LABEL_HYPHEN) != 0) |
397a8e74 VD |
792 | return NULL; |
793 | state |= LABEL_HYPHEN; | |
794 | } | |
795 | else | |
796 | return NULL; | |
d88926f1 | 797 | } |
397a8e74 VD |
798 | |
799 | /* | |
800 | * The final label must not end in a hyphen or ".", and | |
801 | * there must be at least two dots after the star. | |
802 | */ | |
803 | if ((state & (LABEL_START | LABEL_HYPHEN)) != 0 | |
804 | || dots < 2) | |
d88926f1 DSH |
805 | return NULL; |
806 | return star; | |
807 | } | |
808 | ||
809 | /* Compare using wildcards. */ | |
810 | static int equal_wildcard(const unsigned char *pattern, size_t pattern_len, | |
397a8e74 VD |
811 | const unsigned char *subject, size_t subject_len, |
812 | unsigned int flags) | |
d88926f1 | 813 | { |
a09e4d24 VD |
814 | const unsigned char *star = NULL; |
815 | ||
816 | /* | |
817 | * Subject names starting with '.' can only match a wildcard pattern | |
818 | * via a subject sub-domain pattern suffix match. | |
819 | */ | |
820 | if (!(subject_len > 1 && subject[0] == '.')) | |
821 | star = valid_star(pattern, pattern_len, flags); | |
d88926f1 DSH |
822 | if (star == NULL) |
823 | return equal_nocase(pattern, pattern_len, | |
397a8e74 | 824 | subject, subject_len, flags); |
d88926f1 DSH |
825 | return wildcard_match(pattern, star - pattern, |
826 | star + 1, (pattern + pattern_len) - star - 1, | |
397a8e74 | 827 | subject, subject_len, flags); |
d88926f1 DSH |
828 | } |
829 | ||
a70da5b3 DSH |
830 | /* Compare an ASN1_STRING to a supplied string. If they match |
831 | * return 1. If cmp_type > 0 only compare if string matches the | |
832 | * type, otherwise convert it to UTF8. | |
833 | */ | |
834 | ||
d88926f1 | 835 | static int do_check_string(ASN1_STRING *a, int cmp_type, equal_fn equal, |
297c67fc | 836 | unsigned int flags, const char *b, size_t blen, |
ced3d915 | 837 | char **peername) |
a70da5b3 | 838 | { |
ced3d915 VD |
839 | int rv = 0; |
840 | ||
a70da5b3 DSH |
841 | if (!a->data || !a->length) |
842 | return 0; | |
843 | if (cmp_type > 0) | |
844 | { | |
845 | if (cmp_type != a->type) | |
846 | return 0; | |
d88926f1 | 847 | if (cmp_type == V_ASN1_IA5STRING) |
297c67fc VD |
848 | rv = equal(a->data, a->length, |
849 | (unsigned char *)b, blen, flags); | |
ced3d915 VD |
850 | else if (a->length == (int)blen && !memcmp(a->data, b, blen)) |
851 | rv = 1; | |
852 | if (rv > 0 && peername) | |
853 | *peername = BUF_strndup((char *)a->data, a->length); | |
a70da5b3 DSH |
854 | } |
855 | else | |
856 | { | |
ced3d915 | 857 | int astrlen; |
a70da5b3 DSH |
858 | unsigned char *astr; |
859 | astrlen = ASN1_STRING_to_UTF8(&astr, a); | |
860 | if (astrlen < 0) | |
d88926f1 | 861 | return -1; |
297c67fc | 862 | rv = equal(astr, astrlen, (unsigned char *)b, blen, flags); |
ced3d915 VD |
863 | if (rv > 0 && peername) |
864 | *peername = BUF_strndup((char *)astr, astrlen); | |
86588655 | 865 | OPENSSL_free(astr); |
a70da5b3 | 866 | } |
ced3d915 | 867 | return rv; |
a70da5b3 DSH |
868 | } |
869 | ||
297c67fc | 870 | static int do_x509_check(X509 *x, const char *chk, size_t chklen, |
ced3d915 VD |
871 | unsigned int flags, int check_type, |
872 | char **peername) | |
a70da5b3 DSH |
873 | { |
874 | GENERAL_NAMES *gens = NULL; | |
875 | X509_NAME *name = NULL; | |
876 | int i; | |
877 | int cnid; | |
d88926f1 | 878 | int alt_type; |
397a8e74 | 879 | int san_present = 0; |
ced3d915 | 880 | int rv = 0; |
d88926f1 | 881 | equal_fn equal; |
7241a4c7 VD |
882 | |
883 | /* See below, this flag is internal-only */ | |
884 | flags &= ~_X509_CHECK_FLAG_DOT_SUBDOMAINS; | |
a70da5b3 | 885 | if (check_type == GEN_EMAIL) |
d88926f1 | 886 | { |
a70da5b3 | 887 | cnid = NID_pkcs9_emailAddress; |
d88926f1 DSH |
888 | alt_type = V_ASN1_IA5STRING; |
889 | equal = equal_email; | |
890 | } | |
a70da5b3 | 891 | else if (check_type == GEN_DNS) |
d88926f1 | 892 | { |
a70da5b3 | 893 | cnid = NID_commonName; |
a09e4d24 VD |
894 | /* Implicit client-side DNS sub-domain pattern */ |
895 | if (chklen > 1 && chk[0] == '.') | |
896 | flags |= _X509_CHECK_FLAG_DOT_SUBDOMAINS; | |
d88926f1 DSH |
897 | alt_type = V_ASN1_IA5STRING; |
898 | if (flags & X509_CHECK_FLAG_NO_WILDCARDS) | |
899 | equal = equal_nocase; | |
900 | else | |
901 | equal = equal_wildcard; | |
902 | } | |
a70da5b3 | 903 | else |
d88926f1 | 904 | { |
a70da5b3 | 905 | cnid = 0; |
d88926f1 DSH |
906 | alt_type = V_ASN1_OCTET_STRING; |
907 | equal = equal_case; | |
908 | } | |
a70da5b3 DSH |
909 | |
910 | if (chklen == 0) | |
297c67fc | 911 | chklen = strlen(chk); |
a70da5b3 DSH |
912 | |
913 | gens = X509_get_ext_d2i(x, NID_subject_alt_name, NULL, NULL); | |
914 | if (gens) | |
915 | { | |
a70da5b3 DSH |
916 | for (i = 0; i < sk_GENERAL_NAME_num(gens); i++) |
917 | { | |
918 | GENERAL_NAME *gen; | |
919 | ASN1_STRING *cstr; | |
920 | gen = sk_GENERAL_NAME_value(gens, i); | |
397a8e74 | 921 | if (gen->type != check_type) |
a70da5b3 | 922 | continue; |
397a8e74 | 923 | san_present = 1; |
a70da5b3 DSH |
924 | if (check_type == GEN_EMAIL) |
925 | cstr = gen->d.rfc822Name; | |
926 | else if (check_type == GEN_DNS) | |
927 | cstr = gen->d.dNSName; | |
928 | else | |
929 | cstr = gen->d.iPAddress; | |
ced3d915 VD |
930 | /* Positive on success, negative on error! */ |
931 | if ((rv = do_check_string(cstr, alt_type, equal, flags, | |
932 | chk, chklen, peername)) != 0) | |
a70da5b3 | 933 | break; |
a70da5b3 DSH |
934 | } |
935 | GENERAL_NAMES_free(gens); | |
ced3d915 VD |
936 | if (rv != 0) |
937 | return rv; | |
397a8e74 VD |
938 | if (!cnid |
939 | || (san_present | |
940 | && !(flags & X509_CHECK_FLAG_ALWAYS_CHECK_SUBJECT))) | |
a70da5b3 DSH |
941 | return 0; |
942 | } | |
943 | i = -1; | |
944 | name = X509_get_subject_name(x); | |
945 | while((i = X509_NAME_get_index_by_NID(name, cnid, i)) >= 0) | |
946 | { | |
947 | X509_NAME_ENTRY *ne; | |
948 | ASN1_STRING *str; | |
949 | ne = X509_NAME_get_entry(name, i); | |
950 | str = X509_NAME_ENTRY_get_data(ne); | |
ced3d915 VD |
951 | /* Positive on success, negative on error! */ |
952 | if ((rv = do_check_string(str, -1, equal, flags, | |
953 | chk, chklen, peername)) != 0) | |
954 | return rv; | |
a70da5b3 DSH |
955 | } |
956 | return 0; | |
957 | } | |
958 | ||
297c67fc VD |
959 | int X509_check_host(X509 *x, const char *chk, size_t chklen, |
960 | unsigned int flags, char **peername) | |
a70da5b3 | 961 | { |
29edebe9 VD |
962 | if (chk == NULL) |
963 | return -2; | |
964 | /* | |
965 | * Embedded NULs are disallowed, except as the last character of a | |
966 | * string of length 2 or more (tolerate caller including terminating | |
967 | * NUL in string length). | |
968 | */ | |
b3012c69 | 969 | if (chklen == 0) |
297c67fc | 970 | chklen = strlen(chk); |
29edebe9 VD |
971 | else if (memchr(chk, '\0', chklen > 1 ? chklen-1 : chklen)) |
972 | return -2; | |
973 | if (chklen > 1 && chk[chklen-1] == '\0') | |
974 | --chklen; | |
ced3d915 | 975 | return do_x509_check(x, chk, chklen, flags, GEN_DNS, peername); |
a70da5b3 DSH |
976 | } |
977 | ||
297c67fc VD |
978 | int X509_check_email(X509 *x, const char *chk, size_t chklen, |
979 | unsigned int flags) | |
a70da5b3 | 980 | { |
29edebe9 VD |
981 | if (chk == NULL) |
982 | return -2; | |
983 | /* | |
984 | * Embedded NULs are disallowed, except as the last character of a | |
985 | * string of length 2 or more (tolerate caller including terminating | |
986 | * NUL in string length). | |
987 | */ | |
988 | if (chklen == 0) | |
989 | chklen = strlen((char *)chk); | |
990 | else if (memchr(chk, '\0', chklen > 1 ? chklen-1 : chklen)) | |
991 | return -2; | |
992 | if (chklen > 1 && chk[chklen-1] == '\0') | |
993 | --chklen; | |
ced3d915 | 994 | return do_x509_check(x, chk, chklen, flags, GEN_EMAIL, NULL); |
a70da5b3 DSH |
995 | } |
996 | ||
997 | int X509_check_ip(X509 *x, const unsigned char *chk, size_t chklen, | |
998 | unsigned int flags) | |
999 | { | |
29edebe9 VD |
1000 | if (chk == NULL) |
1001 | return -2; | |
297c67fc | 1002 | return do_x509_check(x, (char *)chk, chklen, flags, GEN_IPADD, NULL); |
a70da5b3 DSH |
1003 | } |
1004 | ||
1005 | int X509_check_ip_asc(X509 *x, const char *ipasc, unsigned int flags) | |
1006 | { | |
1007 | unsigned char ipout[16]; | |
297c67fc VD |
1008 | size_t iplen; |
1009 | ||
29edebe9 VD |
1010 | if (ipasc == NULL) |
1011 | return -2; | |
297c67fc | 1012 | iplen = (size_t) a2i_ipadd(ipout, ipasc); |
a70da5b3 | 1013 | if (iplen == 0) |
d88926f1 | 1014 | return -2; |
297c67fc | 1015 | return do_x509_check(x, (char *)ipout, iplen, flags, GEN_IPADD, NULL); |
a70da5b3 DSH |
1016 | } |
1017 | ||
4e5d3a7f DSH |
1018 | /* Convert IP addresses both IPv4 and IPv6 into an |
1019 | * OCTET STRING compatible with RFC3280. | |
1020 | */ | |
1021 | ||
1022 | ASN1_OCTET_STRING *a2i_IPADDRESS(const char *ipasc) | |
1023 | { | |
1024 | unsigned char ipout[16]; | |
1025 | ASN1_OCTET_STRING *ret; | |
1026 | int iplen; | |
1027 | ||
1028 | /* If string contains a ':' assume IPv6 */ | |
1029 | ||
520b76ff DSH |
1030 | iplen = a2i_ipadd(ipout, ipasc); |
1031 | ||
1032 | if (!iplen) | |
1033 | return NULL; | |
4e5d3a7f DSH |
1034 | |
1035 | ret = ASN1_OCTET_STRING_new(); | |
1036 | if (!ret) | |
1037 | return NULL; | |
1038 | if (!ASN1_OCTET_STRING_set(ret, ipout, iplen)) | |
1039 | { | |
1040 | ASN1_OCTET_STRING_free(ret); | |
1041 | return NULL; | |
1042 | } | |
1043 | return ret; | |
1044 | } | |
1045 | ||
520b76ff DSH |
1046 | ASN1_OCTET_STRING *a2i_IPADDRESS_NC(const char *ipasc) |
1047 | { | |
1048 | ASN1_OCTET_STRING *ret = NULL; | |
1049 | unsigned char ipout[32]; | |
1050 | char *iptmp = NULL, *p; | |
1051 | int iplen1, iplen2; | |
1052 | p = strchr(ipasc,'/'); | |
1053 | if (!p) | |
1054 | return NULL; | |
1055 | iptmp = BUF_strdup(ipasc); | |
1056 | if (!iptmp) | |
1057 | return NULL; | |
1058 | p = iptmp + (p - ipasc); | |
1059 | *p++ = 0; | |
1060 | ||
1061 | iplen1 = a2i_ipadd(ipout, iptmp); | |
1062 | ||
1063 | if (!iplen1) | |
1064 | goto err; | |
1065 | ||
1066 | iplen2 = a2i_ipadd(ipout + iplen1, p); | |
1067 | ||
1068 | OPENSSL_free(iptmp); | |
1069 | iptmp = NULL; | |
1070 | ||
1071 | if (!iplen2 || (iplen1 != iplen2)) | |
1072 | goto err; | |
1073 | ||
1074 | ret = ASN1_OCTET_STRING_new(); | |
1075 | if (!ret) | |
1076 | goto err; | |
1077 | if (!ASN1_OCTET_STRING_set(ret, ipout, iplen1 + iplen2)) | |
1078 | goto err; | |
1079 | ||
1080 | return ret; | |
1081 | ||
1082 | err: | |
1083 | if (iptmp) | |
1084 | OPENSSL_free(iptmp); | |
1085 | if (ret) | |
1086 | ASN1_OCTET_STRING_free(ret); | |
1087 | return NULL; | |
1088 | } | |
1089 | ||
1090 | ||
96ea4ae9 | 1091 | int a2i_ipadd(unsigned char *ipout, const char *ipasc) |
520b76ff DSH |
1092 | { |
1093 | /* If string contains a ':' assume IPv6 */ | |
1094 | ||
1095 | if (strchr(ipasc, ':')) | |
1096 | { | |
1097 | if (!ipv6_from_asc(ipout, ipasc)) | |
1098 | return 0; | |
1099 | return 16; | |
1100 | } | |
1101 | else | |
1102 | { | |
1103 | if (!ipv4_from_asc(ipout, ipasc)) | |
1104 | return 0; | |
1105 | return 4; | |
1106 | } | |
1107 | } | |
1108 | ||
4e5d3a7f DSH |
1109 | static int ipv4_from_asc(unsigned char *v4, const char *in) |
1110 | { | |
1111 | int a0, a1, a2, a3; | |
1112 | if (sscanf(in, "%d.%d.%d.%d", &a0, &a1, &a2, &a3) != 4) | |
1113 | return 0; | |
1114 | if ((a0 < 0) || (a0 > 255) || (a1 < 0) || (a1 > 255) | |
1115 | || (a2 < 0) || (a2 > 255) || (a3 < 0) || (a3 > 255)) | |
1116 | return 0; | |
1117 | v4[0] = a0; | |
1118 | v4[1] = a1; | |
1119 | v4[2] = a2; | |
1120 | v4[3] = a3; | |
1121 | return 1; | |
1122 | } | |
1123 | ||
1124 | typedef struct { | |
1125 | /* Temporary store for IPV6 output */ | |
1126 | unsigned char tmp[16]; | |
1127 | /* Total number of bytes in tmp */ | |
1128 | int total; | |
1129 | /* The position of a zero (corresponding to '::') */ | |
1130 | int zero_pos; | |
1131 | /* Number of zeroes */ | |
1132 | int zero_cnt; | |
1133 | } IPV6_STAT; | |
1134 | ||
1135 | ||
1136 | static int ipv6_from_asc(unsigned char *v6, const char *in) | |
1137 | { | |
1138 | IPV6_STAT v6stat; | |
1139 | v6stat.total = 0; | |
1140 | v6stat.zero_pos = -1; | |
1141 | v6stat.zero_cnt = 0; | |
1142 | /* Treat the IPv6 representation as a list of values | |
1143 | * separated by ':'. The presence of a '::' will parse | |
1144 | * as one, two or three zero length elements. | |
1145 | */ | |
1146 | if (!CONF_parse_list(in, ':', 0, ipv6_cb, &v6stat)) | |
1147 | return 0; | |
1148 | ||
1149 | /* Now for some sanity checks */ | |
1150 | ||
1151 | if (v6stat.zero_pos == -1) | |
1152 | { | |
1153 | /* If no '::' must have exactly 16 bytes */ | |
1154 | if (v6stat.total != 16) | |
1155 | return 0; | |
1156 | } | |
1157 | else | |
1158 | { | |
1159 | /* If '::' must have less than 16 bytes */ | |
1160 | if (v6stat.total == 16) | |
1161 | return 0; | |
1162 | /* More than three zeroes is an error */ | |
1163 | if (v6stat.zero_cnt > 3) | |
1164 | return 0; | |
1165 | /* Can only have three zeroes if nothing else present */ | |
1166 | else if (v6stat.zero_cnt == 3) | |
1167 | { | |
1168 | if (v6stat.total > 0) | |
1169 | return 0; | |
1170 | } | |
1171 | /* Can only have two zeroes if at start or end */ | |
1172 | else if (v6stat.zero_cnt == 2) | |
1173 | { | |
1174 | if ((v6stat.zero_pos != 0) | |
1175 | && (v6stat.zero_pos != v6stat.total)) | |
1176 | return 0; | |
1177 | } | |
1178 | else | |
1179 | /* Can only have one zero if *not* start or end */ | |
1180 | { | |
1181 | if ((v6stat.zero_pos == 0) | |
1182 | || (v6stat.zero_pos == v6stat.total)) | |
1183 | return 0; | |
1184 | } | |
1185 | } | |
1186 | ||
1187 | /* Format result */ | |
1188 | ||
9d44cd16 | 1189 | if (v6stat.zero_pos >= 0) |
1d4e8791 DSH |
1190 | { |
1191 | /* Copy initial part */ | |
4e5d3a7f | 1192 | memcpy(v6, v6stat.tmp, v6stat.zero_pos); |
1d4e8791 | 1193 | /* Zero middle */ |
4e5d3a7f | 1194 | memset(v6 + v6stat.zero_pos, 0, 16 - v6stat.total); |
1d4e8791 DSH |
1195 | /* Copy final part */ |
1196 | if (v6stat.total != v6stat.zero_pos) | |
1197 | memcpy(v6 + v6stat.zero_pos + 16 - v6stat.total, | |
1198 | v6stat.tmp + v6stat.zero_pos, | |
1199 | v6stat.total - v6stat.zero_pos); | |
1200 | } | |
1201 | else | |
1202 | memcpy(v6, v6stat.tmp, 16); | |
4e5d3a7f DSH |
1203 | |
1204 | return 1; | |
1205 | } | |
1206 | ||
1207 | static int ipv6_cb(const char *elem, int len, void *usr) | |
1208 | { | |
1209 | IPV6_STAT *s = usr; | |
1210 | /* Error if 16 bytes written */ | |
1211 | if (s->total == 16) | |
1212 | return 0; | |
1213 | if (len == 0) | |
1214 | { | |
1215 | /* Zero length element, corresponds to '::' */ | |
1216 | if (s->zero_pos == -1) | |
1217 | s->zero_pos = s->total; | |
1218 | /* If we've already got a :: its an error */ | |
1219 | else if (s->zero_pos != s->total) | |
1220 | return 0; | |
1221 | s->zero_cnt++; | |
1222 | } | |
1223 | else | |
1224 | { | |
1225 | /* If more than 4 characters could be final a.b.c.d form */ | |
1226 | if (len > 4) | |
1227 | { | |
1228 | /* Need at least 4 bytes left */ | |
1229 | if (s->total > 12) | |
1230 | return 0; | |
1231 | /* Must be end of string */ | |
1232 | if (elem[len]) | |
1233 | return 0; | |
1234 | if (!ipv4_from_asc(s->tmp + s->total, elem)) | |
1235 | return 0; | |
1236 | s->total += 4; | |
1237 | } | |
1238 | else | |
1239 | { | |
1240 | if (!ipv6_hex(s->tmp + s->total, elem, len)) | |
1241 | return 0; | |
1242 | s->total += 2; | |
1243 | } | |
1244 | } | |
1245 | return 1; | |
1246 | } | |
1247 | ||
1248 | /* Convert a string of up to 4 hex digits into the corresponding | |
1249 | * IPv6 form. | |
1250 | */ | |
1251 | ||
1252 | static int ipv6_hex(unsigned char *out, const char *in, int inlen) | |
1253 | { | |
1254 | unsigned char c; | |
1255 | unsigned int num = 0; | |
1256 | if (inlen > 4) | |
1257 | return 0; | |
1258 | while(inlen--) | |
1259 | { | |
1260 | c = *in++; | |
1261 | num <<= 4; | |
1262 | if ((c >= '0') && (c <= '9')) | |
1263 | num |= c - '0'; | |
1264 | else if ((c >= 'A') && (c <= 'F')) | |
1265 | num |= c - 'A' + 10; | |
1266 | else if ((c >= 'a') && (c <= 'f')) | |
1267 | num |= c - 'a' + 10; | |
1268 | else | |
1269 | return 0; | |
1270 | } | |
1271 | out[0] = num >> 8; | |
1272 | out[1] = num & 0xff; | |
1273 | return 1; | |
1274 | } | |
1275 | ||
f0dc08e6 DSH |
1276 | |
1277 | int X509V3_NAME_from_section(X509_NAME *nm, STACK_OF(CONF_VALUE)*dn_sk, | |
1278 | unsigned long chtype) | |
1279 | { | |
1280 | CONF_VALUE *v; | |
1a15c899 | 1281 | int i, mval; |
f0dc08e6 DSH |
1282 | char *p, *type; |
1283 | if (!nm) | |
1284 | return 0; | |
1285 | ||
1286 | for (i = 0; i < sk_CONF_VALUE_num(dn_sk); i++) | |
1287 | { | |
1288 | v=sk_CONF_VALUE_value(dn_sk,i); | |
1289 | type=v->name; | |
1290 | /* Skip past any leading X. X: X, etc to allow for | |
1291 | * multiple instances | |
1292 | */ | |
1293 | for(p = type; *p ; p++) | |
1294 | #ifndef CHARSET_EBCDIC | |
1295 | if ((*p == ':') || (*p == ',') || (*p == '.')) | |
1296 | #else | |
1297 | if ((*p == os_toascii[':']) || (*p == os_toascii[',']) || (*p == os_toascii['.'])) | |
1298 | #endif | |
1299 | { | |
1300 | p++; | |
1301 | if(*p) type = p; | |
1302 | break; | |
1303 | } | |
1a15c899 | 1304 | #ifndef CHARSET_EBCDIC |
5e64f8c4 | 1305 | if (*type == '+') |
1a15c899 | 1306 | #else |
5e64f8c4 | 1307 | if (*type == os_toascii['+']) |
1a15c899 DSH |
1308 | #endif |
1309 | { | |
1310 | mval = -1; | |
5e64f8c4 | 1311 | type++; |
1a15c899 DSH |
1312 | } |
1313 | else | |
1314 | mval = 0; | |
f0dc08e6 | 1315 | if (!X509_NAME_add_entry_by_txt(nm,type, chtype, |
1a15c899 | 1316 | (unsigned char *) v->value,-1,-1,mval)) |
f0dc08e6 DSH |
1317 | return 0; |
1318 | ||
1319 | } | |
1320 | return 1; | |
1321 | } |