diff options
Diffstat (limited to 'crypto/x509v3/v3_ncons.c')
| -rw-r--r-- | crypto/x509v3/v3_ncons.c | 705 |
1 files changed, 0 insertions, 705 deletions
diff --git a/crypto/x509v3/v3_ncons.c b/crypto/x509v3/v3_ncons.c deleted file mode 100644 index 60cb4ceaa8f8..000000000000 --- a/crypto/x509v3/v3_ncons.c +++ /dev/null @@ -1,705 +0,0 @@ -/* - * Copyright 2003-2021 The OpenSSL Project Authors. All Rights Reserved. - * - * Licensed under the OpenSSL license (the "License"). You may not use - * this file except in compliance with the License. You can obtain a copy - * in the file LICENSE in the source distribution or at - * https://www.openssl.org/source/license.html - */ - -#include "internal/cryptlib.h" -#include "internal/numbers.h" -#include <stdio.h> -#include "crypto/asn1.h" -#include <openssl/asn1t.h> -#include <openssl/conf.h> -#include <openssl/x509v3.h> - -#include "crypto/x509.h" -#include "ext_dat.h" - -static void *v2i_NAME_CONSTRAINTS(const X509V3_EXT_METHOD *method, - X509V3_CTX *ctx, - STACK_OF(CONF_VALUE) *nval); -static int i2r_NAME_CONSTRAINTS(const X509V3_EXT_METHOD *method, void *a, - BIO *bp, int ind); -static int do_i2r_name_constraints(const X509V3_EXT_METHOD *method, - STACK_OF(GENERAL_SUBTREE) *trees, BIO *bp, - int ind, const char *name); -static int print_nc_ipadd(BIO *bp, ASN1_OCTET_STRING *ip); - -static int nc_match(GENERAL_NAME *gen, NAME_CONSTRAINTS *nc); -static int nc_match_single(GENERAL_NAME *sub, GENERAL_NAME *gen); -static int nc_dn(X509_NAME *sub, X509_NAME *nm); -static int nc_dns(ASN1_IA5STRING *sub, ASN1_IA5STRING *dns); -static int nc_email(ASN1_IA5STRING *sub, ASN1_IA5STRING *eml); -static int nc_uri(ASN1_IA5STRING *uri, ASN1_IA5STRING *base); -static int nc_ip(ASN1_OCTET_STRING *ip, ASN1_OCTET_STRING *base); - -const X509V3_EXT_METHOD v3_name_constraints = { - NID_name_constraints, 0, - ASN1_ITEM_ref(NAME_CONSTRAINTS), - 0, 0, 0, 0, - 0, 0, - 0, v2i_NAME_CONSTRAINTS, - i2r_NAME_CONSTRAINTS, 0, - NULL -}; - -ASN1_SEQUENCE(GENERAL_SUBTREE) = { - ASN1_SIMPLE(GENERAL_SUBTREE, base, GENERAL_NAME), - ASN1_IMP_OPT(GENERAL_SUBTREE, minimum, ASN1_INTEGER, 0), - ASN1_IMP_OPT(GENERAL_SUBTREE, maximum, ASN1_INTEGER, 1) -} ASN1_SEQUENCE_END(GENERAL_SUBTREE) - -ASN1_SEQUENCE(NAME_CONSTRAINTS) = { - ASN1_IMP_SEQUENCE_OF_OPT(NAME_CONSTRAINTS, permittedSubtrees, - GENERAL_SUBTREE, 0), - ASN1_IMP_SEQUENCE_OF_OPT(NAME_CONSTRAINTS, excludedSubtrees, - GENERAL_SUBTREE, 1), -} ASN1_SEQUENCE_END(NAME_CONSTRAINTS) - - -IMPLEMENT_ASN1_ALLOC_FUNCTIONS(GENERAL_SUBTREE) -IMPLEMENT_ASN1_ALLOC_FUNCTIONS(NAME_CONSTRAINTS) - - -#define IA5_OFFSET_LEN(ia5base, offset) \ - ((ia5base)->length - ((unsigned char *)(offset) - (ia5base)->data)) - -/* Like memchr but for ASN1_IA5STRING. Additionally you can specify the - * starting point to search from - */ -# define ia5memchr(str, start, c) memchr(start, c, IA5_OFFSET_LEN(str, start)) - -/* Like memrrchr but for ASN1_IA5STRING */ -static char *ia5memrchr(ASN1_IA5STRING *str, int c) -{ - int i; - - for (i = str->length; i > 0 && str->data[i - 1] != c; i--); - - if (i == 0) - return NULL; - - return (char *)&str->data[i - 1]; -} - -/* - * We cannot use strncasecmp here because that applies locale specific rules. It - * also doesn't work with ASN1_STRINGs that may have embedded NUL characters. - * For example in Turkish 'I' is not the uppercase character for 'i'. We need to - * do a simple ASCII case comparison ignoring the locale (that is why we use - * numeric constants below). - */ -static int ia5ncasecmp(const char *s1, const char *s2, size_t n) -{ - for (; n > 0; n--, s1++, s2++) { - if (*s1 != *s2) { - unsigned char c1 = (unsigned char)*s1, c2 = (unsigned char)*s2; - - /* Convert to lower case */ - if (c1 >= 0x41 /* A */ && c1 <= 0x5A /* Z */) - c1 += 0x20; - if (c2 >= 0x41 /* A */ && c2 <= 0x5A /* Z */) - c2 += 0x20; - - if (c1 == c2) - continue; - - if (c1 < c2) - return -1; - - /* c1 > c2 */ - return 1; - } - } - - return 0; -} - -static void *v2i_NAME_CONSTRAINTS(const X509V3_EXT_METHOD *method, - X509V3_CTX *ctx, STACK_OF(CONF_VALUE) *nval) -{ - int i; - CONF_VALUE tval, *val; - STACK_OF(GENERAL_SUBTREE) **ptree = NULL; - NAME_CONSTRAINTS *ncons = NULL; - GENERAL_SUBTREE *sub = NULL; - - ncons = NAME_CONSTRAINTS_new(); - if (ncons == NULL) - goto memerr; - for (i = 0; i < sk_CONF_VALUE_num(nval); i++) { - val = sk_CONF_VALUE_value(nval, i); - if (strncmp(val->name, "permitted", 9) == 0 && val->name[9]) { - ptree = &ncons->permittedSubtrees; - tval.name = val->name + 10; - } else if (strncmp(val->name, "excluded", 8) == 0 && val->name[8]) { - ptree = &ncons->excludedSubtrees; - tval.name = val->name + 9; - } else { - X509V3err(X509V3_F_V2I_NAME_CONSTRAINTS, X509V3_R_INVALID_SYNTAX); - goto err; - } - tval.value = val->value; - sub = GENERAL_SUBTREE_new(); - if (sub == NULL) - goto memerr; - if (!v2i_GENERAL_NAME_ex(sub->base, method, ctx, &tval, 1)) - goto err; - if (*ptree == NULL) - *ptree = sk_GENERAL_SUBTREE_new_null(); - if (*ptree == NULL || !sk_GENERAL_SUBTREE_push(*ptree, sub)) - goto memerr; - sub = NULL; - } - - return ncons; - - memerr: - X509V3err(X509V3_F_V2I_NAME_CONSTRAINTS, ERR_R_MALLOC_FAILURE); - err: - NAME_CONSTRAINTS_free(ncons); - GENERAL_SUBTREE_free(sub); - - return NULL; -} - -static int i2r_NAME_CONSTRAINTS(const X509V3_EXT_METHOD *method, void *a, - BIO *bp, int ind) -{ - NAME_CONSTRAINTS *ncons = a; - do_i2r_name_constraints(method, ncons->permittedSubtrees, - bp, ind, "Permitted"); - do_i2r_name_constraints(method, ncons->excludedSubtrees, - bp, ind, "Excluded"); - return 1; -} - -static int do_i2r_name_constraints(const X509V3_EXT_METHOD *method, - STACK_OF(GENERAL_SUBTREE) *trees, - BIO *bp, int ind, const char *name) -{ - GENERAL_SUBTREE *tree; - int i; - if (sk_GENERAL_SUBTREE_num(trees) > 0) - BIO_printf(bp, "%*s%s:\n", ind, "", name); - for (i = 0; i < sk_GENERAL_SUBTREE_num(trees); i++) { - tree = sk_GENERAL_SUBTREE_value(trees, i); - BIO_printf(bp, "%*s", ind + 2, ""); - if (tree->base->type == GEN_IPADD) - print_nc_ipadd(bp, tree->base->d.ip); - else - GENERAL_NAME_print(bp, tree->base); - BIO_puts(bp, "\n"); - } - return 1; -} - -static int print_nc_ipadd(BIO *bp, ASN1_OCTET_STRING *ip) -{ - int i, len; - unsigned char *p; - p = ip->data; - len = ip->length; - BIO_puts(bp, "IP:"); - if (len == 8) { - BIO_printf(bp, "%d.%d.%d.%d/%d.%d.%d.%d", - p[0], p[1], p[2], p[3], p[4], p[5], p[6], p[7]); - } else if (len == 32) { - for (i = 0; i < 16; i++) { - BIO_printf(bp, "%X", p[0] << 8 | p[1]); - p += 2; - if (i == 7) - BIO_puts(bp, "/"); - else if (i != 15) - BIO_puts(bp, ":"); - } - } else - BIO_printf(bp, "IP Address:<invalid>"); - return 1; -} - -#define NAME_CHECK_MAX (1 << 20) - -static int add_lengths(int *out, int a, int b) -{ - /* sk_FOO_num(NULL) returns -1 but is effectively 0 when iterating. */ - if (a < 0) - a = 0; - if (b < 0) - b = 0; - - if (a > INT_MAX - b) - return 0; - *out = a + b; - return 1; -} - -/*- - * Check a certificate conforms to a specified set of constraints. - * Return values: - * X509_V_OK: All constraints obeyed. - * X509_V_ERR_PERMITTED_VIOLATION: Permitted subtree violation. - * X509_V_ERR_EXCLUDED_VIOLATION: Excluded subtree violation. - * X509_V_ERR_SUBTREE_MINMAX: Min or max values present and matching type. - * X509_V_ERR_UNSUPPORTED_CONSTRAINT_TYPE: Unsupported constraint type. - * X509_V_ERR_UNSUPPORTED_CONSTRAINT_SYNTAX: bad unsupported constraint syntax. - * X509_V_ERR_UNSUPPORTED_NAME_SYNTAX: bad or unsupported syntax of name - */ - -int NAME_CONSTRAINTS_check(X509 *x, NAME_CONSTRAINTS *nc) -{ - int r, i, name_count, constraint_count; - X509_NAME *nm; - - nm = X509_get_subject_name(x); - - /* - * Guard against certificates with an excessive number of names or - * constraints causing a computationally expensive name constraints check. - */ - if (!add_lengths(&name_count, X509_NAME_entry_count(nm), - sk_GENERAL_NAME_num(x->altname)) - || !add_lengths(&constraint_count, - sk_GENERAL_SUBTREE_num(nc->permittedSubtrees), - sk_GENERAL_SUBTREE_num(nc->excludedSubtrees)) - || (name_count > 0 && constraint_count > NAME_CHECK_MAX / name_count)) - return X509_V_ERR_UNSPECIFIED; - - if (X509_NAME_entry_count(nm) > 0) { - GENERAL_NAME gntmp; - gntmp.type = GEN_DIRNAME; - gntmp.d.directoryName = nm; - - r = nc_match(&gntmp, nc); - - if (r != X509_V_OK) - return r; - - gntmp.type = GEN_EMAIL; - - /* Process any email address attributes in subject name */ - - for (i = -1;;) { - const X509_NAME_ENTRY *ne; - - i = X509_NAME_get_index_by_NID(nm, NID_pkcs9_emailAddress, i); - if (i == -1) - break; - ne = X509_NAME_get_entry(nm, i); - gntmp.d.rfc822Name = X509_NAME_ENTRY_get_data(ne); - if (gntmp.d.rfc822Name->type != V_ASN1_IA5STRING) - return X509_V_ERR_UNSUPPORTED_NAME_SYNTAX; - - r = nc_match(&gntmp, nc); - - if (r != X509_V_OK) - return r; - } - - } - - for (i = 0; i < sk_GENERAL_NAME_num(x->altname); i++) { - GENERAL_NAME *gen = sk_GENERAL_NAME_value(x->altname, i); - r = nc_match(gen, nc); - if (r != X509_V_OK) - return r; - } - - return X509_V_OK; - -} - -static int cn2dnsid(ASN1_STRING *cn, unsigned char **dnsid, size_t *idlen) -{ - int utf8_length; - unsigned char *utf8_value; - int i; - int isdnsname = 0; - - /* Don't leave outputs uninitialized */ - *dnsid = NULL; - *idlen = 0; - - /*- - * Per RFC 6125, DNS-IDs representing internationalized domain names appear - * in certificates in A-label encoded form: - * - * https://tools.ietf.org/html/rfc6125#section-6.4.2 - * - * The same applies to CNs which are intended to represent DNS names. - * However, while in the SAN DNS-IDs are IA5Strings, as CNs they may be - * needlessly encoded in 16-bit Unicode. We perform a conversion to UTF-8 - * to ensure that we get an ASCII representation of any CNs that are - * representable as ASCII, but just not encoded as ASCII. The UTF-8 form - * may contain some non-ASCII octets, and that's fine, such CNs are not - * valid legacy DNS names. - * - * Note, 'int' is the return type of ASN1_STRING_to_UTF8() so that's what - * we must use for 'utf8_length'. - */ - if ((utf8_length = ASN1_STRING_to_UTF8(&utf8_value, cn)) < 0) - return X509_V_ERR_OUT_OF_MEM; - - /* - * Some certificates have had names that include a *trailing* NUL byte. - * Remove these harmless NUL characters. They would otherwise yield false - * alarms with the following embedded NUL check. - */ - while (utf8_length > 0 && utf8_value[utf8_length - 1] == '\0') - --utf8_length; - - /* Reject *embedded* NULs */ - if (memchr(utf8_value, 0, utf8_length) != NULL) { - OPENSSL_free(utf8_value); - return X509_V_ERR_UNSUPPORTED_NAME_SYNTAX; - } - - /* - * XXX: Deviation from strict DNS name syntax, also check names with '_' - * Check DNS name syntax, any '-' or '.' must be internal, - * and on either side of each '.' we can't have a '-' or '.'. - * - * If the name has just one label, we don't consider it a DNS name. This - * means that "CN=sometld" cannot be precluded by DNS name constraints, but - * that is not a problem. - */ - for (i = 0; i < utf8_length; ++i) { - unsigned char c = utf8_value[i]; - - if ((c >= 'a' && c <= 'z') - || (c >= 'A' && c <= 'Z') - || (c >= '0' && c <= '9') - || c == '_') - continue; - - /* Dot and hyphen cannot be first or last. */ - if (i > 0 && i < utf8_length - 1) { - if (c == '-') - continue; - /* - * Next to a dot the preceding and following characters must not be - * another dot or a hyphen. Otherwise, record that the name is - * plausible, since it has two or more labels. - */ - if (c == '.' - && utf8_value[i + 1] != '.' - && utf8_value[i - 1] != '-' - && utf8_value[i + 1] != '-') { - isdnsname = 1; - continue; - } - } - isdnsname = 0; - break; - } - - if (isdnsname) { - *dnsid = utf8_value; - *idlen = (size_t)utf8_length; - return X509_V_OK; - } - OPENSSL_free(utf8_value); - return X509_V_OK; -} - -/* - * Check CN against DNS-ID name constraints. - */ -int NAME_CONSTRAINTS_check_CN(X509 *x, NAME_CONSTRAINTS *nc) -{ - int r, i; - X509_NAME *nm = X509_get_subject_name(x); - ASN1_STRING stmp; - GENERAL_NAME gntmp; - - stmp.flags = 0; - stmp.type = V_ASN1_IA5STRING; - gntmp.type = GEN_DNS; - gntmp.d.dNSName = &stmp; - - /* Process any commonName attributes in subject name */ - - for (i = -1;;) { - X509_NAME_ENTRY *ne; - ASN1_STRING *cn; - unsigned char *idval; - size_t idlen; - - i = X509_NAME_get_index_by_NID(nm, NID_commonName, i); - if (i == -1) - break; - ne = X509_NAME_get_entry(nm, i); - cn = X509_NAME_ENTRY_get_data(ne); - - /* Only process attributes that look like host names */ - if ((r = cn2dnsid(cn, &idval, &idlen)) != X509_V_OK) - return r; - if (idlen == 0) - continue; - - stmp.length = idlen; - stmp.data = idval; - r = nc_match(&gntmp, nc); - OPENSSL_free(idval); - if (r != X509_V_OK) - return r; - } - return X509_V_OK; -} - -static int nc_match(GENERAL_NAME *gen, NAME_CONSTRAINTS *nc) -{ - GENERAL_SUBTREE *sub; - int i, r, match = 0; - - /* - * Permitted subtrees: if any subtrees exist of matching the type at - * least one subtree must match. - */ - - for (i = 0; i < sk_GENERAL_SUBTREE_num(nc->permittedSubtrees); i++) { - sub = sk_GENERAL_SUBTREE_value(nc->permittedSubtrees, i); - if (gen->type != sub->base->type) - continue; - if (sub->minimum || sub->maximum) - return X509_V_ERR_SUBTREE_MINMAX; - /* If we already have a match don't bother trying any more */ - if (match == 2) - continue; - if (match == 0) - match = 1; - r = nc_match_single(gen, sub->base); - if (r == X509_V_OK) - match = 2; - else if (r != X509_V_ERR_PERMITTED_VIOLATION) - return r; - } - - if (match == 1) - return X509_V_ERR_PERMITTED_VIOLATION; - - /* Excluded subtrees: must not match any of these */ - - for (i = 0; i < sk_GENERAL_SUBTREE_num(nc->excludedSubtrees); i++) { - sub = sk_GENERAL_SUBTREE_value(nc->excludedSubtrees, i); - if (gen->type != sub->base->type) - continue; - if (sub->minimum || sub->maximum) - return X509_V_ERR_SUBTREE_MINMAX; - - r = nc_match_single(gen, sub->base); - if (r == X509_V_OK) - return X509_V_ERR_EXCLUDED_VIOLATION; - else if (r != X509_V_ERR_PERMITTED_VIOLATION) - return r; - - } - - return X509_V_OK; - -} - -static int nc_match_single(GENERAL_NAME *gen, GENERAL_NAME *base) -{ - switch (base->type) { - case GEN_DIRNAME: - return nc_dn(gen->d.directoryName, base->d.directoryName); - - case GEN_DNS: - return nc_dns(gen->d.dNSName, base->d.dNSName); - - case GEN_EMAIL: - return nc_email(gen->d.rfc822Name, base->d.rfc822Name); - - case GEN_URI: - return nc_uri(gen->d.uniformResourceIdentifier, - base->d.uniformResourceIdentifier); - - case GEN_IPADD: - return nc_ip(gen->d.iPAddress, base->d.iPAddress); - - default: - return X509_V_ERR_UNSUPPORTED_CONSTRAINT_TYPE; - } - -} - -/* - * directoryName name constraint matching. The canonical encoding of - * X509_NAME makes this comparison easy. It is matched if the subtree is a - * subset of the name. - */ - -static int nc_dn(X509_NAME *nm, X509_NAME *base) -{ - /* Ensure canonical encodings are up to date. */ - if (nm->modified && i2d_X509_NAME(nm, NULL) < 0) - return X509_V_ERR_OUT_OF_MEM; - if (base->modified && i2d_X509_NAME(base, NULL) < 0) - return X509_V_ERR_OUT_OF_MEM; - if (base->canon_enclen > nm->canon_enclen) - return X509_V_ERR_PERMITTED_VIOLATION; - if (memcmp(base->canon_enc, nm->canon_enc, base->canon_enclen)) - return X509_V_ERR_PERMITTED_VIOLATION; - return X509_V_OK; -} - -static int nc_dns(ASN1_IA5STRING *dns, ASN1_IA5STRING *base) -{ - char *baseptr = (char *)base->data; - char *dnsptr = (char *)dns->data; - - /* Empty matches everything */ - if (base->length == 0) - return X509_V_OK; - - if (dns->length < base->length) - return X509_V_ERR_PERMITTED_VIOLATION; - - /* - * Otherwise can add zero or more components on the left so compare RHS - * and if dns is longer and expect '.' as preceding character. - */ - if (dns->length > base->length) { - dnsptr += dns->length - base->length; - if (*baseptr != '.' && dnsptr[-1] != '.') - return X509_V_ERR_PERMITTED_VIOLATION; - } - - if (ia5ncasecmp(baseptr, dnsptr, base->length)) - return X509_V_ERR_PERMITTED_VIOLATION; - - return X509_V_OK; - -} - -static int nc_email(ASN1_IA5STRING *eml, ASN1_IA5STRING *base) -{ - const char *baseptr = (char *)base->data; - const char *emlptr = (char *)eml->data; - const char *baseat = ia5memrchr(base, '@'); - const char *emlat = ia5memrchr(eml, '@'); - size_t basehostlen, emlhostlen; - - if (!emlat) - return X509_V_ERR_UNSUPPORTED_NAME_SYNTAX; - /* Special case: initial '.' is RHS match */ - if (!baseat && base->length > 0 && (*baseptr == '.')) { - if (eml->length > base->length) { - emlptr += eml->length - base->length; - if (ia5ncasecmp(baseptr, emlptr, base->length) == 0) - return X509_V_OK; - } - return X509_V_ERR_PERMITTED_VIOLATION; - } - - /* If we have anything before '@' match local part */ - - if (baseat) { - if (baseat != baseptr) { - if ((baseat - baseptr) != (emlat - emlptr)) - return X509_V_ERR_PERMITTED_VIOLATION; - if (memchr(baseptr, 0, baseat - baseptr) || - memchr(emlptr, 0, emlat - emlptr)) - return X509_V_ERR_UNSUPPORTED_NAME_SYNTAX; - /* Case sensitive match of local part */ - if (strncmp(baseptr, emlptr, emlat - emlptr)) - return X509_V_ERR_PERMITTED_VIOLATION; - } - /* Position base after '@' */ - baseptr = baseat + 1; - } - emlptr = emlat + 1; - basehostlen = IA5_OFFSET_LEN(base, baseptr); - emlhostlen = IA5_OFFSET_LEN(eml, emlptr); - /* Just have hostname left to match: case insensitive */ - if (basehostlen != emlhostlen || ia5ncasecmp(baseptr, emlptr, emlhostlen)) - return X509_V_ERR_PERMITTED_VIOLATION; - - return X509_V_OK; - -} - -static int nc_uri(ASN1_IA5STRING *uri, ASN1_IA5STRING *base) -{ - const char *baseptr = (char *)base->data; - const char *hostptr = (char *)uri->data; - const char *p = ia5memchr(uri, (char *)uri->data, ':'); - int hostlen; - - /* Check for foo:// and skip past it */ - if (p == NULL - || IA5_OFFSET_LEN(uri, p) < 3 - || p[1] != '/' - || p[2] != '/') - return X509_V_ERR_UNSUPPORTED_NAME_SYNTAX; - hostptr = p + 3; - - /* Determine length of hostname part of URI */ - - /* Look for a port indicator as end of hostname first */ - - p = ia5memchr(uri, hostptr, ':'); - /* Otherwise look for trailing slash */ - if (p == NULL) - p = ia5memchr(uri, hostptr, '/'); - - if (p == NULL) - hostlen = IA5_OFFSET_LEN(uri, hostptr); - else - hostlen = p - hostptr; - - if (hostlen == 0) - return X509_V_ERR_UNSUPPORTED_NAME_SYNTAX; - - /* Special case: initial '.' is RHS match */ - if (base->length > 0 && *baseptr == '.') { - if (hostlen > base->length) { - p = hostptr + hostlen - base->length; - if (ia5ncasecmp(p, baseptr, base->length) == 0) - return X509_V_OK; - } - return X509_V_ERR_PERMITTED_VIOLATION; - } - - if ((base->length != (int)hostlen) - || ia5ncasecmp(hostptr, baseptr, hostlen)) - return X509_V_ERR_PERMITTED_VIOLATION; - - return X509_V_OK; - -} - -static int nc_ip(ASN1_OCTET_STRING *ip, ASN1_OCTET_STRING *base) -{ - int hostlen, baselen, i; - unsigned char *hostptr, *baseptr, *maskptr; - hostptr = ip->data; - hostlen = ip->length; - baseptr = base->data; - baselen = base->length; - - /* Invalid if not IPv4 or IPv6 */ - if (!((hostlen == 4) || (hostlen == 16))) - return X509_V_ERR_UNSUPPORTED_NAME_SYNTAX; - if (!((baselen == 8) || (baselen == 32))) - return X509_V_ERR_UNSUPPORTED_NAME_SYNTAX; - - /* Do not match IPv4 with IPv6 */ - if (hostlen * 2 != baselen) - return X509_V_ERR_PERMITTED_VIOLATION; - - maskptr = base->data + hostlen; - - /* Considering possible not aligned base ipAddress */ - /* Not checking for wrong mask definition: i.e.: 255.0.255.0 */ - for (i = 0; i < hostlen; i++) - if ((hostptr[i] & maskptr[i]) != (baseptr[i] & maskptr[i])) - return X509_V_ERR_PERMITTED_VIOLATION; - - return X509_V_OK; - -} |