diff options
Diffstat (limited to 'thirdparty/openssl/crypto/x509v3/v3_ncons.c')
| -rw-r--r-- | thirdparty/openssl/crypto/x509v3/v3_ncons.c | 520 |
1 files changed, 0 insertions, 520 deletions
diff --git a/thirdparty/openssl/crypto/x509v3/v3_ncons.c b/thirdparty/openssl/crypto/x509v3/v3_ncons.c deleted file mode 100644 index 1184091ccf..0000000000 --- a/thirdparty/openssl/crypto/x509v3/v3_ncons.c +++ /dev/null @@ -1,520 +0,0 @@ -/* v3_ncons.c */ -/* - * Written by Dr Stephen N Henson (steve@openssl.org) for the OpenSSL - * project. - */ -/* ==================================================================== - * Copyright (c) 2003 The OpenSSL Project. All rights reserved. - * - * Redistribution and use in source and binary forms, with or without - * modification, are permitted provided that the following conditions - * are met: - * - * 1. Redistributions of source code must retain the above copyright - * notice, this list of conditions and the following disclaimer. - * - * 2. Redistributions in binary form must reproduce the above copyright - * notice, this list of conditions and the following disclaimer in - * the documentation and/or other materials provided with the - * distribution. - * - * 3. All advertising materials mentioning features or use of this - * software must display the following acknowledgment: - * "This product includes software developed by the OpenSSL Project - * for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)" - * - * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to - * endorse or promote products derived from this software without - * prior written permission. For written permission, please contact - * licensing@OpenSSL.org. - * - * 5. Products derived from this software may not be called "OpenSSL" - * nor may "OpenSSL" appear in their names without prior written - * permission of the OpenSSL Project. - * - * 6. Redistributions of any form whatsoever must retain the following - * acknowledgment: - * "This product includes software developed by the OpenSSL Project - * for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)" - * - * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY - * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE - * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR - * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OpenSSL PROJECT OR - * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, - * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT - * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; - * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) - * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, - * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) - * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED - * OF THE POSSIBILITY OF SUCH DAMAGE. - * ==================================================================== - * - * This product includes cryptographic software written by Eric Young - * (eay@cryptsoft.com). This product includes software written by Tim - * Hudson (tjh@cryptsoft.com). - * - */ - -#include <stdio.h> -#include "cryptlib.h" -#include <openssl/asn1t.h> -#include <openssl/conf.h> -#include <openssl/x509v3.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, 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); - -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) - -/* - * We cannot use strncasecmp here because that applies locale specific rules. - * 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; - } else if (*s1 == 0) { - /* If we get here we know that *s2 == 0 too */ - return 0; - } - } - - return 0; -} - -static int ia5casecmp(const char *s1, const char *s2) -{ - /* No portable definition of SIZE_MAX, so we use (size_t)(-1) instead */ - return ia5ncasecmp(s1, s2, (size_t)(-1)); -} - -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) - 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) && val->name[9]) { - ptree = &ncons->permittedSubtrees; - tval.name = val->name + 10; - } else if (!strncmp(val->name, "excluded", 8) && 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) - *ptree = sk_GENERAL_SUBTREE_new_null(); - if (!*ptree || !sk_GENERAL_SUBTREE_push(*ptree, sub)) - goto memerr; - sub = NULL; - } - - return ncons; - - memerr: - X509V3err(X509V3_F_V2I_NAME_CONSTRAINTS, ERR_R_MALLOC_FAILURE); - err: - if (ncons) - NAME_CONSTRAINTS_free(ncons); - if (sub) - 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, 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; -} - -/*- - * 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; - X509_NAME *nm; - - nm = X509_get_subject_name(x); - - 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;;) { - 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 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); - - 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 (!*baseptr) - return X509_V_OK; - /* - * 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 (ia5casecmp(baseptr, dnsptr)) - 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 = strchr(baseptr, '@'); - const char *emlat = strchr(emlptr, '@'); - if (!emlat) - return X509_V_ERR_UNSUPPORTED_NAME_SYNTAX; - /* Special case: inital '.' is RHS match */ - if (!baseat && (*baseptr == '.')) { - if (eml->length > base->length) { - emlptr += eml->length - base->length; - if (ia5casecmp(baseptr, emlptr) == 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; - /* 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; - /* Just have hostname left to match: case insensitive */ - if (ia5casecmp(baseptr, emlptr)) - 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 = strchr(hostptr, ':'); - int hostlen; - /* Check for foo:// and skip past it */ - if (!p || (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 = strchr(hostptr, ':'); - /* Otherwise look for trailing slash */ - if (!p) - p = strchr(hostptr, '/'); - - if (!p) - hostlen = strlen(hostptr); - else - hostlen = p - hostptr; - - if (hostlen == 0) - return X509_V_ERR_UNSUPPORTED_NAME_SYNTAX; - - /* Special case: inital '.' is RHS match */ - if (*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; - -} |