/* x509_vpm.c */

/* Written by Dr Stephen N Henson (shenson@bigfoot.com) for the OpenSSL

 * project 2004.

 */

/* ====================================================================

 * Copyright (c) 2004 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).

 *

 */

 /*

 © Portions copyright (c) 2006 Nokia Corporation.  All rights reserved.

 */

#include <stdio.h>

#include "cryptlib.h"

#include <openssl/crypto.h>

#include <openssl/lhash.h>

#include <openssl/buffer.h>

#include <openssl/x509.h>

#include <openssl/x509v3.h>

#if (defined(SYMBIAN) && (defined(__WINSCW__) || defined(__WINS__)))

#include "libcrypto_wsd_macros.h"

#include "libcrypto_wsd.h"

#endif

/* X509_VERIFY_PARAM functions */

static void x509_verify_param_zero(X509_VERIFY_PARAM *param)

	{

	if (!param)

		return;

	param->name = NULL;

	param->purpose = 0;

	param->trust = 0;

	param->inh_flags = X509_VP_FLAG_DEFAULT;

	param->flags = 0;

	param->depth = -1;

	if (param->policies)

		{

		sk_ASN1_OBJECT_pop_free(param->policies, ASN1_OBJECT_free);

		param->policies = NULL;

		}

	}

EXPORT_C X509_VERIFY_PARAM *X509_VERIFY_PARAM_new(void)

	{

	X509_VERIFY_PARAM *param;

	param = OPENSSL_malloc(sizeof(X509_VERIFY_PARAM));

#ifdef SYMBIAN

  if(param==NULL)

  return param;

#endif

	memset(param, 0, sizeof(X509_VERIFY_PARAM));

	x509_verify_param_zero(param);

	return param;

	}

EXPORT_C void X509_VERIFY_PARAM_free(X509_VERIFY_PARAM *param)

	{

	x509_verify_param_zero(param);

	OPENSSL_free(param);

	}

/* This function determines how parameters are "inherited" from one structure

 * to another. There are several different ways this can happen.

 *

 * 1. If a child structure needs to have its values initialized from a parent

 *    they are simply copied across. For example SSL_CTX copied to SSL.

 * 2. If the structure should take on values only if they are currently unset.

 *    For example the values in an SSL structure will take appropriate value

 *    for SSL servers or clients but only if the application has not set new

 *    ones.

 *

 * The "inh_flags" field determines how this function behaves. 

 *

 * Normally any values which are set in the default are not copied from the

 * destination and verify flags are ORed together.

 *

 * If X509_VP_FLAG_DEFAULT is set then anything set in the source is copied

 * to the destination. Effectively the values in "to" become default values

 * which will be used only if nothing new is set in "from".

 *

 * If X509_VP_FLAG_OVERWRITE is set then all value are copied across whether

 * they are set or not. Flags is still Ored though.

 *

 * If X509_VP_FLAG_RESET_FLAGS is set then the flags value is copied instead

 * of ORed.

 *

 * If X509_VP_FLAG_LOCKED is set then no values are copied.

 *

 * If X509_VP_FLAG_ONCE is set then the current inh_flags setting is zeroed

 * after the next call.

 */

/* Macro to test if a field should be copied from src to dest */

#define test_x509_verify_param_copy(field, def) \

	(to_overwrite || \

		((src->field != def) && (to_default || (dest->field == def))))

/* Macro to test and copy a field if necessary */

#define x509_verify_param_copy(field, def) \

	if (test_x509_verify_param_copy(field, def)) \

		dest->field = src->field

EXPORT_C int X509_VERIFY_PARAM_inherit(X509_VERIFY_PARAM *dest,

						const X509_VERIFY_PARAM *src)

	{

	unsigned long inh_flags;

	int to_default, to_overwrite;

	if (!src)

		return 1;

	inh_flags = dest->inh_flags | src->inh_flags;

	if (inh_flags & X509_VP_FLAG_ONCE)

		dest->inh_flags = 0;

	if (inh_flags & X509_VP_FLAG_LOCKED)

		return 1;

	if (inh_flags & X509_VP_FLAG_DEFAULT)

		to_default = 1;

	else

		to_default = 0;

	if (inh_flags & X509_VP_FLAG_OVERWRITE)

		to_overwrite = 1;

	else

		to_overwrite = 0;

	x509_verify_param_copy(purpose, 0);

	x509_verify_param_copy(trust, 0);

	x509_verify_param_copy(depth, -1);

	/* If overwrite or check time not set, copy across */

	if (to_overwrite || !(dest->flags & X509_V_FLAG_USE_CHECK_TIME))

		{

		dest->check_time = src->check_time;

		dest->flags &= ~X509_V_FLAG_USE_CHECK_TIME;

		/* Don't need to copy flag: that is done below */

		}

	if (inh_flags & X509_VP_FLAG_RESET_FLAGS)

		dest->flags = 0;

	dest->flags |= src->flags;

	if (test_x509_verify_param_copy(policies, NULL))

		{

		if (!X509_VERIFY_PARAM_set1_policies(dest, src->policies))

			return 0;

		}

	return 1;

	}

EXPORT_C int X509_VERIFY_PARAM_set1(X509_VERIFY_PARAM *to,

						const X509_VERIFY_PARAM *from)

	{

	to->inh_flags |= X509_VP_FLAG_DEFAULT;

	return X509_VERIFY_PARAM_inherit(to, from);

	}

EXPORT_C int X509_VERIFY_PARAM_set1_name(X509_VERIFY_PARAM *param, const char *name)

	{

	if (param->name)

		OPENSSL_free(param->name);

	param->name = BUF_strdup(name);

	if (param->name)

		return 1;

	return 0;

	}

EXPORT_C int X509_VERIFY_PARAM_set_flags(X509_VERIFY_PARAM *param, unsigned long flags)

	{

	param->flags |= flags;

	if (flags & X509_V_FLAG_POLICY_MASK)

		param->flags |= X509_V_FLAG_POLICY_CHECK;

	return 1;

	}

EXPORT_C int X509_VERIFY_PARAM_clear_flags(X509_VERIFY_PARAM *param, unsigned long flags)

	{

	param->flags &= ~flags;

	return 1;

	}

EXPORT_C unsigned long X509_VERIFY_PARAM_get_flags(X509_VERIFY_PARAM *param)

	{

	return param->flags;

	}

EXPORT_C int X509_VERIFY_PARAM_set_purpose(X509_VERIFY_PARAM *param, int purpose)

	{

	return X509_PURPOSE_set(&param->purpose, purpose);

	}

EXPORT_C int X509_VERIFY_PARAM_set_trust(X509_VERIFY_PARAM *param, int trust)

	{

	return X509_TRUST_set(&param->trust, trust);

	}

EXPORT_C void X509_VERIFY_PARAM_set_depth(X509_VERIFY_PARAM *param, int depth)

	{

	param->depth = depth;

	}

EXPORT_C void X509_VERIFY_PARAM_set_time(X509_VERIFY_PARAM *param, time_t t)

	{

	param->check_time = t;

	param->flags |= X509_V_FLAG_USE_CHECK_TIME;

	}

EXPORT_C int X509_VERIFY_PARAM_add0_policy(X509_VERIFY_PARAM *param, ASN1_OBJECT *policy)

	{

	if (!param->policies)

		{

		param->policies = sk_ASN1_OBJECT_new_null();

		if (!param->policies)

			return 0;

		}

	if (!sk_ASN1_OBJECT_push(param->policies, policy))

		return 0;

	return 1;

	}

EXPORT_C int X509_VERIFY_PARAM_set1_policies(X509_VERIFY_PARAM *param, 

					STACK_OF(ASN1_OBJECT) *policies)

	{

	int i;

	ASN1_OBJECT *oid, *doid;

	if (!param)

		return 0;

	if (param->policies)

		sk_ASN1_OBJECT_pop_free(param->policies, ASN1_OBJECT_free);

	if (!policies)

		{

		param->policies = NULL;

		return 1;

		}

	param->policies = sk_ASN1_OBJECT_new_null();

	if (!param->policies)

		return 0;

	for (i = 0; i < sk_ASN1_OBJECT_num(policies); i++)

		{

		oid = sk_ASN1_OBJECT_value(policies, i);

		doid = OBJ_dup(oid);

		if (!doid)

			return 0;

		if (!sk_ASN1_OBJECT_push(param->policies, doid))

			{

			ASN1_OBJECT_free(doid);

			return 0;

			}

		}

	param->flags |= X509_V_FLAG_POLICY_CHECK;

	return 1;

	}

EXPORT_C int X509_VERIFY_PARAM_get_depth(const X509_VERIFY_PARAM *param)

	{

	return param->depth;

	}

/* Default verify parameters: these are used for various

 * applications and can be overridden by the user specified table.

 * NB: the 'name' field *must* be in alphabetical order because it

 * will be searched using OBJ_search.

 */

static const X509_VERIFY_PARAM default_table[] = {

	{

	"default",	/* X509 default parameters */

	0,		/* Check time */

	0,		/* internal flags */

	0,		/* flags */

	0,		/* purpose */

	0,		/* trust */

	9,		/* depth */

	NULL		/* policies */

	},

	{

	"pkcs7",			/* SSL/TLS client parameters */

	0,				/* Check time */

	0,				/* internal flags */

	0,				/* flags */

	X509_PURPOSE_SMIME_SIGN,	/* purpose */

	X509_TRUST_EMAIL,		/* trust */

	-1,				/* depth */

	NULL				/* policies */

	},

	{

	"ssl_client",			/* SSL/TLS client parameters */

	0,				/* Check time */

	0,				/* internal flags */

	0,				/* flags */

	X509_PURPOSE_SSL_CLIENT,	/* purpose */

	X509_TRUST_SSL_CLIENT,		/* trust */

	-1,				/* depth */

	NULL				/* policies */

	},

	{

	"ssl_server",			/* SSL/TLS server parameters */

	0,				/* Check time */

	0,				/* internal flags */

	0,				/* flags */

	X509_PURPOSE_SSL_SERVER,	/* purpose */

	X509_TRUST_SSL_SERVER,		/* trust */

	-1,				/* depth */

	NULL				/* policies */

	}};

#ifndef EMULATOR

static STACK_OF(X509_VERIFY_PARAM) *param_table = NULL;

#else

GET_STATIC_VAR_FROM_TLS(param_table,x509_vpm,STACK_OF(X509_VERIFY_PARAM) *)

#define param_table (*GET_WSD_VAR_NAME(param_table,x509_vpm, s)())

#endif

static int table_cmp(const void *pa, const void *pb)

	{

	const X509_VERIFY_PARAM *a = pa, *b = pb;

	return strcmp(a->name, b->name);

	}

static int param_cmp(const X509_VERIFY_PARAM * const *a,

			const X509_VERIFY_PARAM * const *b)

	{

	return strcmp((*a)->name, (*b)->name);

	}

EXPORT_C int X509_VERIFY_PARAM_add0_table(X509_VERIFY_PARAM *param)

	{

	int idx;

	X509_VERIFY_PARAM *ptmp;

	if (!param_table)

		{

		param_table = sk_X509_VERIFY_PARAM_new(param_cmp);

		if (!param_table)

			return 0;

		}

	else

		{

		idx = sk_X509_VERIFY_PARAM_find(param_table, param);

		if (idx != -1)

			{

			ptmp = sk_X509_VERIFY_PARAM_value(param_table, idx);

			X509_VERIFY_PARAM_free(ptmp);

			(void)sk_X509_VERIFY_PARAM_delete(param_table, idx);

			}

		}

	if (!sk_X509_VERIFY_PARAM_push(param_table, param))

		return 0;

	return 1;

	}

EXPORT_C const X509_VERIFY_PARAM *X509_VERIFY_PARAM_lookup(const char *name)

	{

	int idx;

	X509_VERIFY_PARAM pm;

	pm.name = (char *)name;

	if (param_table)

		{

		idx = sk_X509_VERIFY_PARAM_find(param_table, &pm);

		if (idx != -1)

			return sk_X509_VERIFY_PARAM_value(param_table, idx);

		}

	return (const X509_VERIFY_PARAM *) OBJ_bsearch((char *)&pm,

				(char *)&default_table,

				sizeof(default_table)/sizeof(X509_VERIFY_PARAM),

				sizeof(X509_VERIFY_PARAM),

				table_cmp);

	}

EXPORT_C void X509_VERIFY_PARAM_table_cleanup(void)

	{

	if (param_table)

		sk_X509_VERIFY_PARAM_pop_free(param_table,

						X509_VERIFY_PARAM_free);

	param_table = NULL;

	}