307 lines
9.2 KiB
C
307 lines
9.2 KiB
C
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/* $OpenBSD: a_strnid.c,v 1.21 2017/01/29 17:49:22 beck Exp $ */
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/* Written by Dr Stephen N Henson (steve@openssl.org) for the OpenSSL
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* project 1999.
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*/
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/* ====================================================================
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* Copyright (c) 1999 The OpenSSL Project. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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*
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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*
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in
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* the documentation and/or other materials provided with the
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* distribution.
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*
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* 3. All advertising materials mentioning features or use of this
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* software must display the following acknowledgment:
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* "This product includes software developed by the OpenSSL Project
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* for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)"
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*
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* 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
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* endorse or promote products derived from this software without
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* prior written permission. For written permission, please contact
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* licensing@OpenSSL.org.
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*
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* 5. Products derived from this software may not be called "OpenSSL"
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* nor may "OpenSSL" appear in their names without prior written
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* permission of the OpenSSL Project.
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*
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* 6. Redistributions of any form whatsoever must retain the following
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* acknowledgment:
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* "This product includes software developed by the OpenSSL Project
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* for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)"
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*
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* THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
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* EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OpenSSL PROJECT OR
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* ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
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* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
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* STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
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* OF THE POSSIBILITY OF SUCH DAMAGE.
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* ====================================================================
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*
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* This product includes cryptographic software written by Eric Young
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* (eay@cryptsoft.com). This product includes software written by Tim
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* Hudson (tjh@cryptsoft.com).
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*
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*/
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#include <ctype.h>
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#include <stdio.h>
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#include <string.h>
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#include <openssl/asn1.h>
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#include <openssl/err.h>
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#include <openssl/objects.h>
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static STACK_OF(ASN1_STRING_TABLE) *stable = NULL;
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static void st_free(ASN1_STRING_TABLE *tbl);
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static int sk_table_cmp(const ASN1_STRING_TABLE * const *a,
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const ASN1_STRING_TABLE * const *b);
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/* This is the global mask for the mbstring functions: this is use to
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* mask out certain types (such as BMPString and UTF8String) because
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* certain software (e.g. Netscape) has problems with them.
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*/
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static unsigned long global_mask = B_ASN1_UTF8STRING;
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void
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ASN1_STRING_set_default_mask(unsigned long mask)
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{
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global_mask = mask;
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}
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unsigned long
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ASN1_STRING_get_default_mask(void)
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{
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return global_mask;
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}
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/* This function sets the default to various "flavours" of configuration.
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* based on an ASCII string. Currently this is:
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* MASK:XXXX : a numerical mask value.
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* nobmp : Don't use BMPStrings (just Printable, T61).
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* pkix : PKIX recommendation in RFC2459.
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* utf8only : only use UTF8Strings (RFC2459 recommendation for 2004).
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* default: the default value, Printable, T61, BMP.
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*/
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int
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ASN1_STRING_set_default_mask_asc(const char *p)
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{
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unsigned long mask;
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char *end;
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if (!strncmp(p, "MASK:", 5)) {
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if (!p[5])
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return 0;
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mask = strtoul(p + 5, &end, 0);
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if (*end)
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return 0;
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} else if (!strcmp(p, "nombstr"))
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mask = ~((unsigned long)(B_ASN1_BMPSTRING|B_ASN1_UTF8STRING));
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else if (!strcmp(p, "pkix"))
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mask = ~((unsigned long)B_ASN1_T61STRING);
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else if (!strcmp(p, "utf8only"))
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mask = B_ASN1_UTF8STRING;
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else if (!strcmp(p, "default"))
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mask = 0xFFFFFFFFL;
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else
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return 0;
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ASN1_STRING_set_default_mask(mask);
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return 1;
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}
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/* The following function generates an ASN1_STRING based on limits in a table.
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* Frequently the types and length of an ASN1_STRING are restricted by a
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* corresponding OID. For example certificates and certificate requests.
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*/
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ASN1_STRING *
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ASN1_STRING_set_by_NID(ASN1_STRING **out, const unsigned char *in, int inlen,
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int inform, int nid)
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{
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ASN1_STRING_TABLE *tbl;
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ASN1_STRING *str = NULL;
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unsigned long mask;
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int ret;
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if (!out)
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out = &str;
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tbl = ASN1_STRING_TABLE_get(nid);
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if (tbl) {
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mask = tbl->mask;
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if (!(tbl->flags & STABLE_NO_MASK))
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mask &= global_mask;
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ret = ASN1_mbstring_ncopy(out, in, inlen, inform, mask,
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tbl->minsize, tbl->maxsize);
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} else
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ret = ASN1_mbstring_copy(out, in, inlen, inform,
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DIRSTRING_TYPE & global_mask);
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if (ret <= 0)
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return NULL;
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return *out;
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}
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/* Now the tables and helper functions for the string table:
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*/
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/* size limits: this stuff is taken straight from RFC3280 */
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#define ub_name 32768
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#define ub_common_name 64
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#define ub_locality_name 128
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#define ub_state_name 128
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#define ub_organization_name 64
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#define ub_organization_unit_name 64
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#define ub_title 64
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#define ub_email_address 128
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#define ub_serial_number 64
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/* This table must be kept in NID order */
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static const ASN1_STRING_TABLE tbl_standard[] = {
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{NID_commonName, 1, ub_common_name, DIRSTRING_TYPE, 0},
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{NID_countryName, 2, 2, B_ASN1_PRINTABLESTRING, STABLE_NO_MASK},
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{NID_localityName, 1, ub_locality_name, DIRSTRING_TYPE, 0},
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{NID_stateOrProvinceName, 1, ub_state_name, DIRSTRING_TYPE, 0},
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{NID_organizationName, 1, ub_organization_name, DIRSTRING_TYPE, 0},
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{NID_organizationalUnitName, 1, ub_organization_unit_name, DIRSTRING_TYPE, 0},
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{NID_pkcs9_emailAddress, 1, ub_email_address, B_ASN1_IA5STRING, STABLE_NO_MASK},
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{NID_pkcs9_unstructuredName, 1, -1, PKCS9STRING_TYPE, 0},
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{NID_pkcs9_challengePassword, 1, -1, PKCS9STRING_TYPE, 0},
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{NID_pkcs9_unstructuredAddress, 1, -1, DIRSTRING_TYPE, 0},
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{NID_givenName, 1, ub_name, DIRSTRING_TYPE, 0},
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{NID_surname, 1, ub_name, DIRSTRING_TYPE, 0},
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{NID_initials, 1, ub_name, DIRSTRING_TYPE, 0},
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{NID_serialNumber, 1, ub_serial_number, B_ASN1_PRINTABLESTRING, STABLE_NO_MASK},
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{NID_friendlyName, -1, -1, B_ASN1_BMPSTRING, STABLE_NO_MASK},
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{NID_name, 1, ub_name, DIRSTRING_TYPE, 0},
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{NID_dnQualifier, -1, -1, B_ASN1_PRINTABLESTRING, STABLE_NO_MASK},
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{NID_domainComponent, 1, -1, B_ASN1_IA5STRING, STABLE_NO_MASK},
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{NID_ms_csp_name, -1, -1, B_ASN1_BMPSTRING, STABLE_NO_MASK}
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};
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static int
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sk_table_cmp(const ASN1_STRING_TABLE * const *a,
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const ASN1_STRING_TABLE * const *b)
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{
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return (*a)->nid - (*b)->nid;
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}
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static int table_cmp_BSEARCH_CMP_FN(const void *, const void *);
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static int table_cmp(ASN1_STRING_TABLE const *, ASN1_STRING_TABLE const *);
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static ASN1_STRING_TABLE *OBJ_bsearch_table(ASN1_STRING_TABLE *key, ASN1_STRING_TABLE const *base, int num);
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static int
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table_cmp(const ASN1_STRING_TABLE *a, const ASN1_STRING_TABLE *b)
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{
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return a->nid - b->nid;
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}
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static int
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table_cmp_BSEARCH_CMP_FN(const void *a_, const void *b_)
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{
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ASN1_STRING_TABLE const *a = a_;
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ASN1_STRING_TABLE const *b = b_;
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return table_cmp(a, b);
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}
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static ASN1_STRING_TABLE *
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OBJ_bsearch_table(ASN1_STRING_TABLE *key, ASN1_STRING_TABLE const *base, int num)
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{
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return (ASN1_STRING_TABLE *)OBJ_bsearch_(key, base, num, sizeof(ASN1_STRING_TABLE),
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table_cmp_BSEARCH_CMP_FN);
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}
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ASN1_STRING_TABLE *
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ASN1_STRING_TABLE_get(int nid)
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{
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int idx;
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ASN1_STRING_TABLE *ttmp;
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ASN1_STRING_TABLE fnd;
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fnd.nid = nid;
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ttmp = OBJ_bsearch_table(&fnd, tbl_standard,
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sizeof(tbl_standard)/sizeof(ASN1_STRING_TABLE));
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if (ttmp)
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return ttmp;
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if (!stable)
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return NULL;
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idx = sk_ASN1_STRING_TABLE_find(stable, &fnd);
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if (idx < 0)
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return NULL;
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return sk_ASN1_STRING_TABLE_value(stable, idx);
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}
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int
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ASN1_STRING_TABLE_add(int nid, long minsize, long maxsize, unsigned long mask,
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unsigned long flags)
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{
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ASN1_STRING_TABLE *tmp;
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char new_nid = 0;
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flags &= ~STABLE_FLAGS_MALLOC;
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if (!stable)
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stable = sk_ASN1_STRING_TABLE_new(sk_table_cmp);
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if (!stable) {
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ASN1error(ERR_R_MALLOC_FAILURE);
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return 0;
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}
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if (!(tmp = ASN1_STRING_TABLE_get(nid))) {
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tmp = malloc(sizeof(ASN1_STRING_TABLE));
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if (!tmp) {
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ASN1error(ERR_R_MALLOC_FAILURE);
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return 0;
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}
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tmp->flags = flags | STABLE_FLAGS_MALLOC;
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tmp->nid = nid;
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new_nid = 1;
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} else tmp->flags = (tmp->flags & STABLE_FLAGS_MALLOC) | flags;
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if (minsize != -1)
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tmp->minsize = minsize;
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if (maxsize != -1)
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tmp->maxsize = maxsize;
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tmp->mask = mask;
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if (new_nid) {
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if (sk_ASN1_STRING_TABLE_push(stable, tmp) == 0) {
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free(tmp);
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ASN1error(ERR_R_MALLOC_FAILURE);
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return 0;
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}
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}
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return 1;
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}
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void
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ASN1_STRING_TABLE_cleanup(void)
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{
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STACK_OF(ASN1_STRING_TABLE) *tmp;
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tmp = stable;
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if (!tmp)
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return;
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stable = NULL;
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sk_ASN1_STRING_TABLE_pop_free(tmp, st_free);
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}
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static void
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st_free(ASN1_STRING_TABLE *tbl)
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{
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if (tbl->flags & STABLE_FLAGS_MALLOC)
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free(tbl);
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}
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