2 /* Written by Dr Stephen N Henson (steve@openssl.org) for the OpenSSL
5 /* ====================================================================
6 * Copyright (c) 1999-2003 The OpenSSL Project. All rights reserved.
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions
12 * 1. Redistributions of source code must retain the above copyright
13 * notice, this list of conditions and the following disclaimer.
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
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/)"
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.
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.
34 * 6. Redistributions of any form whatsoever must retain the following
36 * "This product includes software developed by the OpenSSL Project
37 * for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)"
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 * ====================================================================
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).
58 /* X509 v3 extension utilities */
64 #include <openssl/conf.h>
65 #include <openssl/x509v3.h>
66 #include <openssl/bn.h>
68 static char *strip_spaces(char *name);
69 static int sk_strcmp(const char * const *a, const char * const *b);
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);
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);
79 /* Add a CONF_VALUE name value pair to stack */
81 int X509V3_add_value(const char *name, const char *value,
82 STACK_OF(CONF_VALUE) **extlist)
84 CONF_VALUE *vtmp = NULL;
85 char *tname = NULL, *tvalue = NULL;
86 if(name && !(tname = BUF_strdup(name))) goto err;
87 if(value && !(tvalue = BUF_strdup(value))) goto err;
88 if(!(vtmp = (CONF_VALUE *)OPENSSL_malloc(sizeof(CONF_VALUE)))) goto err;
89 if(!*extlist && !(*extlist = sk_CONF_VALUE_new_null())) goto err;
93 if(!sk_CONF_VALUE_push(*extlist, vtmp)) goto err;
96 X509V3err(X509V3_F_X509V3_ADD_VALUE,ERR_R_MALLOC_FAILURE);
97 if(vtmp) OPENSSL_free(vtmp);
98 if(tname) OPENSSL_free(tname);
99 if(tvalue) OPENSSL_free(tvalue);
103 int X509V3_add_value_uchar(const char *name, const unsigned char *value,
104 STACK_OF(CONF_VALUE) **extlist)
106 return X509V3_add_value(name,(const char *)value,extlist);
109 /* Free function for STACK_OF(CONF_VALUE) */
111 void X509V3_conf_free(CONF_VALUE *conf)
114 if(conf->name) OPENSSL_free(conf->name);
115 if(conf->value) OPENSSL_free(conf->value);
116 if(conf->section) OPENSSL_free(conf->section);
120 int X509V3_add_value_bool(const char *name, int asn1_bool,
121 STACK_OF(CONF_VALUE) **extlist)
123 if(asn1_bool) return X509V3_add_value(name, "TRUE", extlist);
124 return X509V3_add_value(name, "FALSE", extlist);
127 int X509V3_add_value_bool_nf(char *name, int asn1_bool,
128 STACK_OF(CONF_VALUE) **extlist)
130 if(asn1_bool) return X509V3_add_value(name, "TRUE", extlist);
135 char *i2s_ASN1_ENUMERATED(X509V3_EXT_METHOD *method, ASN1_ENUMERATED *a)
137 BIGNUM *bntmp = 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);
147 char *i2s_ASN1_INTEGER(X509V3_EXT_METHOD *method, ASN1_INTEGER *a)
149 BIGNUM *bntmp = 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);
159 ASN1_INTEGER *s2i_ASN1_INTEGER(X509V3_EXT_METHOD *method, char *value)
166 X509V3err(X509V3_F_S2I_ASN1_INTEGER,X509V3_R_INVALID_NULL_VALUE);
170 if (value[0] == '-') {
175 if (value[0] == '0' && ((value[1] == 'x') || (value[1] == 'X'))) {
180 if (ishex) ret = BN_hex2bn(&bn, value);
181 else ret = BN_dec2bn(&bn, value);
183 if (!ret || value[ret]) {
185 X509V3err(X509V3_F_S2I_ASN1_INTEGER,X509V3_R_BN_DEC2BN_ERROR);
189 if (isneg && BN_is_zero(bn)) isneg = 0;
191 aint = BN_to_ASN1_INTEGER(bn, NULL);
194 X509V3err(X509V3_F_S2I_ASN1_INTEGER,X509V3_R_BN_TO_ASN1_INTEGER_ERROR);
197 if (isneg) aint->type |= V_ASN1_NEG;
201 int X509V3_add_value_int(const char *name, ASN1_INTEGER *aint,
202 STACK_OF(CONF_VALUE) **extlist)
207 if(!(strtmp = i2s_ASN1_INTEGER(NULL, aint))) return 0;
208 ret = X509V3_add_value(name, strtmp, extlist);
209 OPENSSL_free(strtmp);
213 int X509V3_get_value_bool(CONF_VALUE *value, int *asn1_bool)
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")) {
222 } else if(!strcmp(btmp, "FALSE") || !strcmp(btmp, "false")
223 || !strcmp(btmp, "N") || !strcmp(btmp, "n")
224 || !strcmp(btmp, "NO") || !strcmp(btmp, "no")) {
229 X509V3err(X509V3_F_X509V3_GET_VALUE_BOOL,X509V3_R_INVALID_BOOLEAN_STRING);
230 X509V3_conf_err(value);
234 int X509V3_get_value_int(CONF_VALUE *value, ASN1_INTEGER **aint)
237 if(!(itmp = s2i_ASN1_INTEGER(NULL, value->value))) {
238 X509V3_conf_err(value);
250 STACK_OF(CONF_VALUE) *X509V3_parse_list(const char *line)
254 STACK_OF(CONF_VALUE) *values = NULL;
257 /* We are going to modify the line so copy it first */
258 linebuf = BUF_strdup(line);
261 /* Go through all characters */
262 for(p = linebuf, q = linebuf; (c = *p) && (c!='\r') && (c!='\n'); p++) {
269 ntmp = strip_spaces(q);
271 X509V3err(X509V3_F_X509V3_PARSE_LIST, X509V3_R_INVALID_NULL_NAME);
275 } else if(c == ',') {
277 ntmp = strip_spaces(q);
280 printf("%s\n", ntmp);
283 X509V3err(X509V3_F_X509V3_PARSE_LIST, X509V3_R_INVALID_NULL_NAME);
286 X509V3_add_value(ntmp, NULL, &values);
294 vtmp = strip_spaces(q);
296 printf("%s\n", ntmp);
299 X509V3err(X509V3_F_X509V3_PARSE_LIST, X509V3_R_INVALID_NULL_VALUE);
302 X509V3_add_value(ntmp, vtmp, &values);
310 if(state == HDR_VALUE) {
311 vtmp = strip_spaces(q);
313 printf("%s=%s\n", ntmp, vtmp);
316 X509V3err(X509V3_F_X509V3_PARSE_LIST, X509V3_R_INVALID_NULL_VALUE);
319 X509V3_add_value(ntmp, vtmp, &values);
321 ntmp = strip_spaces(q);
323 printf("%s\n", ntmp);
326 X509V3err(X509V3_F_X509V3_PARSE_LIST, X509V3_R_INVALID_NULL_NAME);
329 X509V3_add_value(ntmp, NULL, &values);
331 OPENSSL_free(linebuf);
335 OPENSSL_free(linebuf);
336 sk_CONF_VALUE_pop_free(values, X509V3_conf_free);
341 /* Delete leading and trailing spaces from a string */
342 static char *strip_spaces(char *name)
345 /* Skip over leading spaces */
347 while(*p && isspace((unsigned char)*p)) p++;
349 q = p + strlen(p) - 1;
350 while((q != p) && isspace((unsigned char)*q)) q--;
356 /* hex string utilities */
358 /* Given a buffer of length 'len' return a OPENSSL_malloc'ed string with its
360 * @@@ (Contents of buffer are always kept in ASCII, also on EBCDIC machines)
363 char *hex_to_string(const unsigned char *buffer, long len)
366 const unsigned char *p;
368 const static char hexdig[] = "0123456789ABCDEF";
369 if(!buffer || !len) return NULL;
370 if(!(tmp = OPENSSL_malloc(len * 3 + 1))) {
371 X509V3err(X509V3_F_HEX_TO_STRING,ERR_R_MALLOC_FAILURE);
375 for(i = 0, p = buffer; i < len; i++,p++) {
376 *q++ = hexdig[(*p >> 4) & 0xf];
377 *q++ = hexdig[*p & 0xf];
381 #ifdef CHARSET_EBCDIC
382 ebcdic2ascii(tmp, tmp, q - tmp - 1);
388 /* Give a string of hex digits convert to
392 unsigned char *string_to_hex(const char *str, long *len)
394 unsigned char *hexbuf, *q;
395 unsigned char ch, cl, *p;
397 X509V3err(X509V3_F_STRING_TO_HEX,X509V3_R_INVALID_NULL_ARGUMENT);
400 if(!(hexbuf = OPENSSL_malloc(strlen(str) >> 1))) goto err;
401 for(p = (unsigned char *)str, q = hexbuf; *p;) {
403 #ifdef CHARSET_EBCDIC
404 ch = os_toebcdic[ch];
406 if(ch == ':') continue;
408 #ifdef CHARSET_EBCDIC
409 cl = os_toebcdic[cl];
412 X509V3err(X509V3_F_STRING_TO_HEX,X509V3_R_ODD_NUMBER_OF_DIGITS);
413 OPENSSL_free(hexbuf);
416 if(isupper(ch)) ch = tolower(ch);
417 if(isupper(cl)) cl = tolower(cl);
419 if((ch >= '0') && (ch <= '9')) ch -= '0';
420 else if ((ch >= 'a') && (ch <= 'f')) ch -= 'a' - 10;
423 if((cl >= '0') && (cl <= '9')) cl -= '0';
424 else if ((cl >= 'a') && (cl <= 'f')) cl -= 'a' - 10;
427 *q++ = (ch << 4) | cl;
430 if(len) *len = q - hexbuf;
435 if(hexbuf) OPENSSL_free(hexbuf);
436 X509V3err(X509V3_F_STRING_TO_HEX,ERR_R_MALLOC_FAILURE);
440 OPENSSL_free(hexbuf);
441 X509V3err(X509V3_F_STRING_TO_HEX,X509V3_R_ILLEGAL_HEX_DIGIT);
446 /* V2I name comparison function: returns zero if 'name' matches
450 int name_cmp(const char *name, const char *cmp)
455 if((ret = strncmp(name, cmp, len))) return ret;
457 if(!c || (c=='.')) return 0;
461 static int sk_strcmp(const char * const *a, const char * const *b)
463 return strcmp(*a, *b);
466 STACK_OF(OPENSSL_STRING) *X509_get1_email(X509 *x)
469 STACK_OF(OPENSSL_STRING) *ret;
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);
477 STACK_OF(OPENSSL_STRING) *X509_get1_ocsp(X509 *x)
479 AUTHORITY_INFO_ACCESS *info;
480 STACK_OF(OPENSSL_STRING) *ret = NULL;
483 info = X509_get_ext_d2i(x, NID_info_access, NULL, NULL);
486 for (i = 0; i < sk_ACCESS_DESCRIPTION_num(info); i++)
488 ACCESS_DESCRIPTION *ad = sk_ACCESS_DESCRIPTION_value(info, i);
489 if (OBJ_obj2nid(ad->method) == NID_ad_OCSP)
491 if (ad->location->type == GEN_URI)
493 if (!append_ia5(&ret, ad->location->d.uniformResourceIdentifier))
498 AUTHORITY_INFO_ACCESS_free(info);
502 STACK_OF(OPENSSL_STRING) *X509_REQ_get1_email(X509_REQ *x)
505 STACK_OF(X509_EXTENSION) *exts;
506 STACK_OF(OPENSSL_STRING) *ret;
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);
517 static STACK_OF(OPENSSL_STRING) *get_email(X509_NAME *name, GENERAL_NAMES *gens)
519 STACK_OF(OPENSSL_STRING) *ret = NULL;
521 ASN1_IA5STRING *email;
524 /* Now add any email address(es) to STACK */
526 /* First supplied X509_NAME */
527 while((i = X509_NAME_get_index_by_NID(name,
528 NID_pkcs9_emailAddress, i)) >= 0) {
529 ne = X509_NAME_get_entry(name, i);
530 email = X509_NAME_ENTRY_get_data(ne);
531 if(!append_ia5(&ret, email)) return NULL;
533 for(i = 0; i < sk_GENERAL_NAME_num(gens); i++)
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;
542 static void str_free(OPENSSL_STRING str)
547 static int append_ia5(STACK_OF(OPENSSL_STRING) **sk, ASN1_IA5STRING *email)
550 /* First some sanity checks */
551 if(email->type != V_ASN1_IA5STRING) return 1;
552 if(!email->data || !email->length) return 1;
553 if(!*sk) *sk = sk_OPENSSL_STRING_new(sk_strcmp);
555 /* Don't add duplicates */
556 if(sk_OPENSSL_STRING_find(*sk, (char *)email->data) != -1) return 1;
557 emtmp = BUF_strdup((char *)email->data);
558 if(!emtmp || !sk_OPENSSL_STRING_push(*sk, emtmp)) {
559 X509_email_free(*sk);
566 void X509_email_free(STACK_OF(OPENSSL_STRING) *sk)
568 sk_OPENSSL_STRING_pop_free(sk, str_free);
571 typedef int (*equal_fn)(const unsigned char *pattern, size_t pattern_len,
572 const unsigned char *subject, size_t subject_len);
574 /* Compare while ASCII ignoring case. */
575 static int equal_nocase(const unsigned char *pattern, size_t pattern_len,
576 const unsigned char *subject, size_t subject_len)
578 if (pattern_len != subject_len)
582 unsigned char l = *pattern;
583 unsigned char r = *subject;
584 /* The pattern must not contain NUL characters. */
589 if ('A' <= l && l <= 'Z')
591 if ('A' <= r && r <= 'Z')
603 /* Compare using memcmp. */
604 static int equal_case(const unsigned char *pattern, size_t pattern_len,
605 const unsigned char *subject, size_t subject_len)
607 /* The pattern must not contain NUL characters. */
608 if (memchr(pattern, '\0', pattern_len) != NULL)
610 if (pattern_len != subject_len)
612 return !memcmp(pattern, subject, pattern_len);
615 /* RFC 5280, section 7.5, requires that only the domain is compared in
616 a case-insensitive manner. */
617 static int equal_email(const unsigned char *a, size_t a_len,
618 const unsigned char *b, size_t b_len)
623 /* We search backwards for the '@' character, so that we do
624 not have to deal with quoted local-parts. The domain part
625 is compared in a case-insensitive manner. */
629 if (a[i] == '@' || b[i] == '@')
631 if (!equal_nocase(a + i, a_len - i,
639 return equal_case(a, i, b, i);
642 /* Compare the prefix and suffix with the subject, and check that the
643 characters in-between are valid. */
644 static int wildcard_match(const unsigned char *prefix, size_t prefix_len,
645 const unsigned char *suffix, size_t suffix_len,
646 const unsigned char *subject, size_t subject_len)
648 const unsigned char *wildcard_start;
649 const unsigned char *wildcard_end;
650 const unsigned char *p;
651 if (subject_len < prefix_len + suffix_len)
653 if (!equal_nocase(prefix, prefix_len, subject, prefix_len))
655 wildcard_start = subject + prefix_len;
656 wildcard_end = subject + (subject_len - suffix_len);
657 if (!equal_nocase(wildcard_end, suffix_len, suffix, suffix_len))
659 /* The wildcard must match at least one character. */
660 if (wildcard_start == wildcard_end)
662 /* Check that the part matched by the wildcard contains only
663 permitted characters and only matches a single label. */
664 for (p = wildcard_start; p != wildcard_end; ++p)
665 if (!(('0' <= *p && *p <= '9') ||
666 ('A' <= *p && *p <= 'Z') ||
667 ('a' <= *p && *p <= 'z') ||
673 /* Checks if the memory region consistens of [0-9A-Za-z.-]. */
674 static int valid_domain_characters(const unsigned char *p, size_t len)
678 if (!(('0' <= *p && *p <= '9') ||
679 ('A' <= *p && *p <= 'Z') ||
680 ('a' <= *p && *p <= 'z') ||
681 *p == '-' || *p == '.'))
689 /* Find the '*' in a wildcard pattern. If no such character is found
690 or the pattern is otherwise invalid, returns NULL. */
691 static const unsigned char *wildcard_find_star(const unsigned char *pattern,
694 const unsigned char *star = memchr(pattern, '*', pattern_len);
695 size_t dot_count = 0;
696 const unsigned char *suffix_start;
697 size_t suffix_length;
700 suffix_start = star + 1;
701 suffix_length = (pattern + pattern_len) - (star + 1);
702 if (!(valid_domain_characters(pattern, star - pattern) &&
703 valid_domain_characters(suffix_start, suffix_length)))
705 /* Check that the suffix matches at least two labels. */
706 while (suffix_length)
708 if (*suffix_start == '.')
718 /* Compare using wildcards. */
719 static int equal_wildcard(const unsigned char *pattern, size_t pattern_len,
720 const unsigned char *subject, size_t subject_len)
722 const unsigned char *star = wildcard_find_star(pattern, pattern_len);
724 return equal_nocase(pattern, pattern_len,
725 subject, subject_len);
726 return wildcard_match(pattern, star - pattern,
727 star + 1, (pattern + pattern_len) - star - 1,
728 subject, subject_len);
731 /* Compare an ASN1_STRING to a supplied string. If they match
732 * return 1. If cmp_type > 0 only compare if string matches the
733 * type, otherwise convert it to UTF8.
736 static int do_check_string(ASN1_STRING *a, int cmp_type, equal_fn equal,
737 const unsigned char *b, size_t blen)
739 if (!a->data || !a->length)
743 if (cmp_type != a->type)
745 if (cmp_type == V_ASN1_IA5STRING)
746 return equal(a->data, a->length, b, blen);
747 if (a->length == (int)blen && !memcmp(a->data, b, blen))
756 astrlen = ASN1_STRING_to_UTF8(&astr, a);
759 rv = equal(astr, astrlen, b, blen);
765 static int do_x509_check(X509 *x, const unsigned char *chk, size_t chklen,
766 unsigned int flags, int check_type)
768 GENERAL_NAMES *gens = NULL;
769 X509_NAME *name = NULL;
774 if (check_type == GEN_EMAIL)
776 cnid = NID_pkcs9_emailAddress;
777 alt_type = V_ASN1_IA5STRING;
780 else if (check_type == GEN_DNS)
782 cnid = NID_commonName;
783 alt_type = V_ASN1_IA5STRING;
784 if (flags & X509_CHECK_FLAG_NO_WILDCARDS)
785 equal = equal_nocase;
787 equal = equal_wildcard;
792 alt_type = V_ASN1_OCTET_STRING;
797 chklen = strlen((const char *)chk);
799 gens = X509_get_ext_d2i(x, NID_subject_alt_name, NULL, NULL);
803 for (i = 0; i < sk_GENERAL_NAME_num(gens); i++)
807 gen = sk_GENERAL_NAME_value(gens, i);
808 if(gen->type != check_type)
810 if (check_type == GEN_EMAIL)
811 cstr = gen->d.rfc822Name;
812 else if (check_type == GEN_DNS)
813 cstr = gen->d.dNSName;
815 cstr = gen->d.iPAddress;
816 if (do_check_string(cstr, alt_type, equal, chk, chklen))
822 GENERAL_NAMES_free(gens);
825 if (!(flags & X509_CHECK_FLAG_ALWAYS_CHECK_SUBJECT) || !cnid)
829 name = X509_get_subject_name(x);
830 while((i = X509_NAME_get_index_by_NID(name, cnid, i)) >= 0)
834 ne = X509_NAME_get_entry(name, i);
835 str = X509_NAME_ENTRY_get_data(ne);
836 if (do_check_string(str, -1, equal, chk, chklen))
842 int X509_check_host(X509 *x, const unsigned char *chk, size_t chklen,
845 return do_x509_check(x, chk, chklen, flags, GEN_DNS);
848 int X509_check_email(X509 *x, const unsigned char *chk, size_t chklen,
851 return do_x509_check(x, chk, chklen, flags, GEN_EMAIL);
854 int X509_check_ip(X509 *x, const unsigned char *chk, size_t chklen,
857 return do_x509_check(x, chk, chklen, flags, GEN_IPADD);
860 int X509_check_ip_asc(X509 *x, const char *ipasc, unsigned int flags)
862 unsigned char ipout[16];
864 iplen = a2i_ipadd(ipout, ipasc);
867 return do_x509_check(x, ipout, (size_t)iplen, flags, GEN_IPADD);
870 /* Convert IP addresses both IPv4 and IPv6 into an
871 * OCTET STRING compatible with RFC3280.
874 ASN1_OCTET_STRING *a2i_IPADDRESS(const char *ipasc)
876 unsigned char ipout[16];
877 ASN1_OCTET_STRING *ret;
880 /* If string contains a ':' assume IPv6 */
882 iplen = a2i_ipadd(ipout, ipasc);
887 ret = ASN1_OCTET_STRING_new();
890 if (!ASN1_OCTET_STRING_set(ret, ipout, iplen))
892 ASN1_OCTET_STRING_free(ret);
898 ASN1_OCTET_STRING *a2i_IPADDRESS_NC(const char *ipasc)
900 ASN1_OCTET_STRING *ret = NULL;
901 unsigned char ipout[32];
902 char *iptmp = NULL, *p;
904 p = strchr(ipasc,'/');
907 iptmp = BUF_strdup(ipasc);
910 p = iptmp + (p - ipasc);
913 iplen1 = a2i_ipadd(ipout, iptmp);
918 iplen2 = a2i_ipadd(ipout + iplen1, p);
923 if (!iplen2 || (iplen1 != iplen2))
926 ret = ASN1_OCTET_STRING_new();
929 if (!ASN1_OCTET_STRING_set(ret, ipout, iplen1 + iplen2))
938 ASN1_OCTET_STRING_free(ret);
943 int a2i_ipadd(unsigned char *ipout, const char *ipasc)
945 /* If string contains a ':' assume IPv6 */
947 if (strchr(ipasc, ':'))
949 if (!ipv6_from_asc(ipout, ipasc))
955 if (!ipv4_from_asc(ipout, ipasc))
961 static int ipv4_from_asc(unsigned char *v4, const char *in)
964 if (sscanf(in, "%d.%d.%d.%d", &a0, &a1, &a2, &a3) != 4)
966 if ((a0 < 0) || (a0 > 255) || (a1 < 0) || (a1 > 255)
967 || (a2 < 0) || (a2 > 255) || (a3 < 0) || (a3 > 255))
977 /* Temporary store for IPV6 output */
978 unsigned char tmp[16];
979 /* Total number of bytes in tmp */
981 /* The position of a zero (corresponding to '::') */
983 /* Number of zeroes */
988 static int ipv6_from_asc(unsigned char *v6, const char *in)
992 v6stat.zero_pos = -1;
994 /* Treat the IPv6 representation as a list of values
995 * separated by ':'. The presence of a '::' will parse
996 * as one, two or three zero length elements.
998 if (!CONF_parse_list(in, ':', 0, ipv6_cb, &v6stat))
1001 /* Now for some sanity checks */
1003 if (v6stat.zero_pos == -1)
1005 /* If no '::' must have exactly 16 bytes */
1006 if (v6stat.total != 16)
1011 /* If '::' must have less than 16 bytes */
1012 if (v6stat.total == 16)
1014 /* More than three zeroes is an error */
1015 if (v6stat.zero_cnt > 3)
1017 /* Can only have three zeroes if nothing else present */
1018 else if (v6stat.zero_cnt == 3)
1020 if (v6stat.total > 0)
1023 /* Can only have two zeroes if at start or end */
1024 else if (v6stat.zero_cnt == 2)
1026 if ((v6stat.zero_pos != 0)
1027 && (v6stat.zero_pos != v6stat.total))
1031 /* Can only have one zero if *not* start or end */
1033 if ((v6stat.zero_pos == 0)
1034 || (v6stat.zero_pos == v6stat.total))
1041 if (v6stat.zero_pos >= 0)
1043 /* Copy initial part */
1044 memcpy(v6, v6stat.tmp, v6stat.zero_pos);
1046 memset(v6 + v6stat.zero_pos, 0, 16 - v6stat.total);
1047 /* Copy final part */
1048 if (v6stat.total != v6stat.zero_pos)
1049 memcpy(v6 + v6stat.zero_pos + 16 - v6stat.total,
1050 v6stat.tmp + v6stat.zero_pos,
1051 v6stat.total - v6stat.zero_pos);
1054 memcpy(v6, v6stat.tmp, 16);
1059 static int ipv6_cb(const char *elem, int len, void *usr)
1062 /* Error if 16 bytes written */
1067 /* Zero length element, corresponds to '::' */
1068 if (s->zero_pos == -1)
1069 s->zero_pos = s->total;
1070 /* If we've already got a :: its an error */
1071 else if (s->zero_pos != s->total)
1077 /* If more than 4 characters could be final a.b.c.d form */
1080 /* Need at least 4 bytes left */
1083 /* Must be end of string */
1086 if (!ipv4_from_asc(s->tmp + s->total, elem))
1092 if (!ipv6_hex(s->tmp + s->total, elem, len))
1100 /* Convert a string of up to 4 hex digits into the corresponding
1104 static int ipv6_hex(unsigned char *out, const char *in, int inlen)
1107 unsigned int num = 0;
1114 if ((c >= '0') && (c <= '9'))
1116 else if ((c >= 'A') && (c <= 'F'))
1117 num |= c - 'A' + 10;
1118 else if ((c >= 'a') && (c <= 'f'))
1119 num |= c - 'a' + 10;
1124 out[1] = num & 0xff;
1129 int X509V3_NAME_from_section(X509_NAME *nm, STACK_OF(CONF_VALUE)*dn_sk,
1130 unsigned long chtype)
1138 for (i = 0; i < sk_CONF_VALUE_num(dn_sk); i++)
1140 v=sk_CONF_VALUE_value(dn_sk,i);
1142 /* Skip past any leading X. X: X, etc to allow for
1143 * multiple instances
1145 for(p = type; *p ; p++)
1146 #ifndef CHARSET_EBCDIC
1147 if ((*p == ':') || (*p == ',') || (*p == '.'))
1149 if ((*p == os_toascii[':']) || (*p == os_toascii[',']) || (*p == os_toascii['.']))
1156 #ifndef CHARSET_EBCDIC
1159 if (*type == os_toascii['+'])
1167 if (!X509_NAME_add_entry_by_txt(nm,type, chtype,
1168 (unsigned char *) v->value,-1,-1,mval))