GCC Code Coverage Report
Directory: ./ Exec Total Coverage
File: lib/libcrypto/asn1/a_strnid.c Lines: 25 86 29.1 %
Date: 2017-11-13 Branches: 7 48 14.6 %

Line Branch Exec Source
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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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}