/* x509_trs.c */

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

  * project 1999.

  */

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

  * Copyright (c) 1999 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/x509v3.h>

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

 #include "libcrypto_wsd_macros.h"

 #include "libcrypto_wsd.h"

 #endif

 static int tr_cmp(const X509_TRUST * const *a,

 		const X509_TRUST * const *b);

 static void trtable_free(X509_TRUST *p);

 static int trust_1oidany(X509_TRUST *trust, X509 *x, int flags);

 static int trust_1oid(X509_TRUST *trust, X509 *x, int flags);

 static int trust_compat(X509_TRUST *trust, X509 *x, int flags);

 static int obj_trust(int id, X509 *x, int flags);

 static int (*default_trust)(int id, X509 *x, int flags) = obj_trust;

 #ifndef EMULATOR

 /* WARNING: the following table should be kept in order of trust

  * and without any gaps so we can just subtract the minimum trust

  * value to get an index into the table

  */

 static X509_TRUST trstandard[] = {

 {X509_TRUST_COMPAT, 0, trust_compat, "compatible", 0, NULL},

 {X509_TRUST_SSL_CLIENT, 0, trust_1oidany, "SSL Client", NID_client_auth, NULL},

 {X509_TRUST_SSL_SERVER, 0, trust_1oidany, "SSL Server", NID_server_auth, NULL},

 {X509_TRUST_EMAIL, 0, trust_1oidany, "S/MIME email", NID_email_protect, NULL},

 {X509_TRUST_OBJECT_SIGN, 0, trust_1oidany, "Object Signer", NID_code_sign, NULL},

 {X509_TRUST_OCSP_SIGN, 0, trust_1oid, "OCSP responder", NID_OCSP_sign, NULL},

 {X509_TRUST_OCSP_REQUEST, 0, trust_1oid, "OCSP request", NID_ad_OCSP, NULL}

 };

 #else

 static const X509_TRUST trstandard[] = {

 {X509_TRUST_COMPAT, 0, trust_compat, "compatible", 0, NULL},

 {X509_TRUST_SSL_CLIENT, 0, trust_1oidany, "SSL Client", NID_client_auth, NULL},

 {X509_TRUST_SSL_SERVER, 0, trust_1oidany, "SSL Server", NID_server_auth, NULL},

 {X509_TRUST_EMAIL, 0, trust_1oidany, "S/MIME email", NID_email_protect, NULL},

 {X509_TRUST_OBJECT_SIGN, 0, trust_1oidany, "Object Signer", NID_code_sign, NULL},

 {X509_TRUST_OCSP_SIGN, 0, trust_1oid, "OCSP responder", NID_OCSP_sign, NULL},

 {X509_TRUST_OCSP_REQUEST, 0, trust_1oid, "OCSP request", NID_ad_OCSP, NULL}

 };

 #endif

 #define X509_TRUST_COUNT	(sizeof(trstandard)/sizeof(X509_TRUST))

 IMPLEMENT_STACK_OF(X509_TRUST)

 #ifndef EMULATOR

 static STACK_OF(X509_TRUST) *trtable = NULL;

 #else

 GET_STATIC_VAR_FROM_TLS(trtable,x509_trs,STACK_OF(X509_TRUST) *)

 #define trtable (*GET_WSD_VAR_NAME(trtable,x509_trs, s)())

 #endif

 static int tr_cmp(const X509_TRUST * const *a,

 		const X509_TRUST * const *b)

 {

 	return (*a)->trust - (*b)->trust;

 }

 EXPORT_C int (*X509_TRUST_set_default(int (*trust)(int , X509 *, int)))(int, X509 *, int)

 {

 	int (*oldtrust)(int , X509 *, int);

 	oldtrust = default_trust;

 	default_trust = trust;

 	return oldtrust;

 }

 EXPORT_C int X509_check_trust(X509 *x, int id, int flags)

 {

 	X509_TRUST *pt;

 	int idx;

 	if(id == -1) return 1;

 	idx = X509_TRUST_get_by_id(id);

 	if(idx == -1) return default_trust(id, x, flags);

 	pt = X509_TRUST_get0(idx);

 	return pt->check_trust(pt, x, flags);

 }

 EXPORT_C int X509_TRUST_get_count(void)

 {

 	if(!trtable) return X509_TRUST_COUNT;

 	return sk_X509_TRUST_num(trtable) + X509_TRUST_COUNT;

 }

 EXPORT_C X509_TRUST * X509_TRUST_get0(int idx)

 {

 	if(idx < 0) return NULL;

 	if(idx < (int)X509_TRUST_COUNT) return ((X509_TRUST *)trstandard + idx);

 	return sk_X509_TRUST_value(trtable, idx - X509_TRUST_COUNT);

 }

 EXPORT_C int X509_TRUST_get_by_id(int id)

 {

 	X509_TRUST tmp;

 	int idx;

 	if((id >= X509_TRUST_MIN) && (id <= X509_TRUST_MAX))

 				 return id - X509_TRUST_MIN;

 	tmp.trust = id;

 	if(!trtable) return -1;

 	idx = sk_X509_TRUST_find(trtable, &tmp);

 	if(idx == -1) return -1;

 	return idx + X509_TRUST_COUNT;

 }

 EXPORT_C int X509_TRUST_set(int *t, int trust)

 {

 	if(X509_TRUST_get_by_id(trust) == -1) {

 		X509err(X509_F_X509_TRUST_SET, X509_R_INVALID_TRUST);

 		return 0;

 	}

 	*t = trust;

 	return 1;

 }

 EXPORT_C int X509_TRUST_add(int id, int flags, int (*ck)(X509_TRUST *, X509 *, int),

 					char *name, int arg1, void *arg2)

 {

 	int idx;

 	X509_TRUST *trtmp;

 	/* This is set according to what we change: application can't set it */

 	flags &= ~X509_TRUST_DYNAMIC;

 	/* This will always be set for application modified trust entries */

 	flags |= X509_TRUST_DYNAMIC_NAME;

 	/* Get existing entry if any */

 	idx = X509_TRUST_get_by_id(id);

 	/* Need a new entry */

 	if(idx == -1) {

 		if(!(trtmp = OPENSSL_malloc(sizeof(X509_TRUST)))) {

 			X509err(X509_F_X509_TRUST_ADD,ERR_R_MALLOC_FAILURE);

 			return 0;

 		}

 		trtmp->flags = X509_TRUST_DYNAMIC;

 	} else trtmp = X509_TRUST_get0(idx);

 	/* OPENSSL_free existing name if dynamic */

 	if(trtmp->flags & X509_TRUST_DYNAMIC_NAME) OPENSSL_free(trtmp->name);

 	/* dup supplied name */

 	if(!(trtmp->name = BUF_strdup(name))) {

 		X509err(X509_F_X509_TRUST_ADD,ERR_R_MALLOC_FAILURE);

 		return 0;

 	}

 	/* Keep the dynamic flag of existing entry */

 	trtmp->flags &= X509_TRUST_DYNAMIC;

 	/* Set all other flags */

 	trtmp->flags |= flags;

 	trtmp->trust = id;

 	trtmp->check_trust = ck;

 	trtmp->arg1 = arg1;

 	trtmp->arg2 = arg2;

 	/* If its a new entry manage the dynamic table */

 	if(idx == -1) {

 		if(!trtable && !(trtable = sk_X509_TRUST_new(tr_cmp))) {

 			X509err(X509_F_X509_TRUST_ADD,ERR_R_MALLOC_FAILURE);

 			return 0;

 		}

 		if (!sk_X509_TRUST_push(trtable, trtmp)) {

 			X509err(X509_F_X509_TRUST_ADD,ERR_R_MALLOC_FAILURE);

 			return 0;

 		}

 	}

 	return 1;

 }

 static void trtable_free(X509_TRUST *p)

 	{

 	if(!p) return;

 	if (p->flags & X509_TRUST_DYNAMIC) 

 		{

 		if (p->flags & X509_TRUST_DYNAMIC_NAME)

 			OPENSSL_free(p->name);

 		OPENSSL_free(p);

 		}

 	}

 EXPORT_C void X509_TRUST_cleanup(void)

 {

 	unsigned int i;

 	for(i = 0; i < X509_TRUST_COUNT; i++) trtable_free((X509_TRUST *)trstandard + i);

 	sk_X509_TRUST_pop_free(trtable, trtable_free);

 	trtable = NULL;

 }

 EXPORT_C int X509_TRUST_get_flags(X509_TRUST *xp)

 {

 	return xp->flags;

 }

 EXPORT_C char *X509_TRUST_get0_name(X509_TRUST *xp)

 {

 	return xp->name;

 }

 EXPORT_C int X509_TRUST_get_trust(X509_TRUST *xp)

 {

 	return xp->trust;

 }

 static int trust_1oidany(X509_TRUST *trust, X509 *x, int flags)

 {

 	if(x->aux && (x->aux->trust || x->aux->reject))

 		return obj_trust(trust->arg1, x, flags);

 	/* we don't have any trust settings: for compatibility

 	 * we return trusted if it is self signed

 	 */

 	return trust_compat(trust, x, flags);

 }

 static int trust_1oid(X509_TRUST *trust, X509 *x, int flags)

 {

 	if(x->aux) return obj_trust(trust->arg1, x, flags);

 	return X509_TRUST_UNTRUSTED;

 }

 static int trust_compat(X509_TRUST *trust, X509 *x, int flags)

 {

 	X509_check_purpose(x, -1, 0);

 	if(x->ex_flags & EXFLAG_SS) return X509_TRUST_TRUSTED;

 	else return X509_TRUST_UNTRUSTED;

 }

 static int obj_trust(int id, X509 *x, int flags)

 {

 	ASN1_OBJECT *obj;

 	int i;

 	X509_CERT_AUX *ax;

 	ax = x->aux;

 	if(!ax) return X509_TRUST_UNTRUSTED;

 	if(ax->reject) {

 		for(i = 0; i < sk_ASN1_OBJECT_num(ax->reject); i++) {

 			obj = sk_ASN1_OBJECT_value(ax->reject, i);

 			if(OBJ_obj2nid(obj) == id) return X509_TRUST_REJECTED;

 		}

 	}	

 	if(ax->trust) {

 		for(i = 0; i < sk_ASN1_OBJECT_num(ax->trust); i++) {

 			obj = sk_ASN1_OBJECT_value(ax->trust, i);

 			if(OBJ_obj2nid(obj) == id) return X509_TRUST_TRUSTED;

 		}

 	}

 	return X509_TRUST_UNTRUSTED;

 }