sl@0: /* x509_trs.c */
sl@0: /* Written by Dr Stephen N Henson (shenson@bigfoot.com) for the OpenSSL
sl@0:  * project 1999.
sl@0:  */
sl@0: /* ====================================================================
sl@0:  * Copyright (c) 1999 The OpenSSL Project.  All rights reserved.
sl@0:  *
sl@0:  * Redistribution and use in source and binary forms, with or without
sl@0:  * modification, are permitted provided that the following conditions
sl@0:  * are met:
sl@0:  *
sl@0:  * 1. Redistributions of source code must retain the above copyright
sl@0:  *    notice, this list of conditions and the following disclaimer. 
sl@0:  *
sl@0:  * 2. Redistributions in binary form must reproduce the above copyright
sl@0:  *    notice, this list of conditions and the following disclaimer in
sl@0:  *    the documentation and/or other materials provided with the
sl@0:  *    distribution.
sl@0:  *
sl@0:  * 3. All advertising materials mentioning features or use of this
sl@0:  *    software must display the following acknowledgment:
sl@0:  *    "This product includes software developed by the OpenSSL Project
sl@0:  *    for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)"
sl@0:  *
sl@0:  * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
sl@0:  *    endorse or promote products derived from this software without
sl@0:  *    prior written permission. For written permission, please contact
sl@0:  *    licensing@OpenSSL.org.
sl@0:  *
sl@0:  * 5. Products derived from this software may not be called "OpenSSL"
sl@0:  *    nor may "OpenSSL" appear in their names without prior written
sl@0:  *    permission of the OpenSSL Project.
sl@0:  *
sl@0:  * 6. Redistributions of any form whatsoever must retain the following
sl@0:  *    acknowledgment:
sl@0:  *    "This product includes software developed by the OpenSSL Project
sl@0:  *    for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)"
sl@0:  *
sl@0:  * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
sl@0:  * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
sl@0:  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
sl@0:  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE OpenSSL PROJECT OR
sl@0:  * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
sl@0:  * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
sl@0:  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
sl@0:  * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
sl@0:  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
sl@0:  * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
sl@0:  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
sl@0:  * OF THE POSSIBILITY OF SUCH DAMAGE.
sl@0:  * ====================================================================
sl@0:  *
sl@0:  * This product includes cryptographic software written by Eric Young
sl@0:  * (eay@cryptsoft.com).  This product includes software written by Tim
sl@0:  * Hudson (tjh@cryptsoft.com).
sl@0:  *
sl@0:  */
sl@0:  /*
sl@0:  © Portions copyright (c) 2006 Nokia Corporation.  All rights reserved.
sl@0:  */
sl@0: 
sl@0: #include <stdio.h>
sl@0: #include "cryptlib.h"
sl@0: #include <openssl/x509v3.h>
sl@0: #if (defined(SYMBIAN) && (defined(__WINSCW__) || defined(__WINS__)))
sl@0: #include "libcrypto_wsd_macros.h"
sl@0: #include "libcrypto_wsd.h"
sl@0: #endif
sl@0: 
sl@0: 
sl@0: static int tr_cmp(const X509_TRUST * const *a,
sl@0: 		const X509_TRUST * const *b);
sl@0: static void trtable_free(X509_TRUST *p);
sl@0: 
sl@0: static int trust_1oidany(X509_TRUST *trust, X509 *x, int flags);
sl@0: static int trust_1oid(X509_TRUST *trust, X509 *x, int flags);
sl@0: static int trust_compat(X509_TRUST *trust, X509 *x, int flags);
sl@0: 
sl@0: static int obj_trust(int id, X509 *x, int flags);
sl@0: static int (*default_trust)(int id, X509 *x, int flags) = obj_trust;
sl@0: 
sl@0: 
sl@0: #ifndef EMULATOR
sl@0: /* WARNING: the following table should be kept in order of trust
sl@0:  * and without any gaps so we can just subtract the minimum trust
sl@0:  * value to get an index into the table
sl@0:  */
sl@0: 
sl@0: static X509_TRUST trstandard[] = {
sl@0: {X509_TRUST_COMPAT, 0, trust_compat, "compatible", 0, NULL},
sl@0: {X509_TRUST_SSL_CLIENT, 0, trust_1oidany, "SSL Client", NID_client_auth, NULL},
sl@0: {X509_TRUST_SSL_SERVER, 0, trust_1oidany, "SSL Server", NID_server_auth, NULL},
sl@0: {X509_TRUST_EMAIL, 0, trust_1oidany, "S/MIME email", NID_email_protect, NULL},
sl@0: {X509_TRUST_OBJECT_SIGN, 0, trust_1oidany, "Object Signer", NID_code_sign, NULL},
sl@0: {X509_TRUST_OCSP_SIGN, 0, trust_1oid, "OCSP responder", NID_OCSP_sign, NULL},
sl@0: {X509_TRUST_OCSP_REQUEST, 0, trust_1oid, "OCSP request", NID_ad_OCSP, NULL}
sl@0: };
sl@0: #else
sl@0: static const X509_TRUST trstandard[] = {
sl@0: {X509_TRUST_COMPAT, 0, trust_compat, "compatible", 0, NULL},
sl@0: {X509_TRUST_SSL_CLIENT, 0, trust_1oidany, "SSL Client", NID_client_auth, NULL},
sl@0: {X509_TRUST_SSL_SERVER, 0, trust_1oidany, "SSL Server", NID_server_auth, NULL},
sl@0: {X509_TRUST_EMAIL, 0, trust_1oidany, "S/MIME email", NID_email_protect, NULL},
sl@0: {X509_TRUST_OBJECT_SIGN, 0, trust_1oidany, "Object Signer", NID_code_sign, NULL},
sl@0: {X509_TRUST_OCSP_SIGN, 0, trust_1oid, "OCSP responder", NID_OCSP_sign, NULL},
sl@0: {X509_TRUST_OCSP_REQUEST, 0, trust_1oid, "OCSP request", NID_ad_OCSP, NULL}
sl@0: };
sl@0: #endif
sl@0: #define X509_TRUST_COUNT	(sizeof(trstandard)/sizeof(X509_TRUST))
sl@0: 
sl@0: IMPLEMENT_STACK_OF(X509_TRUST)
sl@0: #ifndef EMULATOR
sl@0: static STACK_OF(X509_TRUST) *trtable = NULL;
sl@0: #else
sl@0: GET_STATIC_VAR_FROM_TLS(trtable,x509_trs,STACK_OF(X509_TRUST) *)
sl@0: #define trtable (*GET_WSD_VAR_NAME(trtable,x509_trs, s)())
sl@0: #endif
sl@0: 
sl@0: static int tr_cmp(const X509_TRUST * const *a,
sl@0: 		const X509_TRUST * const *b)
sl@0: {
sl@0: 	return (*a)->trust - (*b)->trust;
sl@0: }
sl@0: 
sl@0: EXPORT_C int (*X509_TRUST_set_default(int (*trust)(int , X509 *, int)))(int, X509 *, int)
sl@0: {
sl@0: 	int (*oldtrust)(int , X509 *, int);
sl@0: 	oldtrust = default_trust;
sl@0: 	default_trust = trust;
sl@0: 	return oldtrust;
sl@0: }
sl@0: 
sl@0: 
sl@0: EXPORT_C int X509_check_trust(X509 *x, int id, int flags)
sl@0: {
sl@0: 	X509_TRUST *pt;
sl@0: 	int idx;
sl@0: 	if(id == -1) return 1;
sl@0: 	idx = X509_TRUST_get_by_id(id);
sl@0: 	if(idx == -1) return default_trust(id, x, flags);
sl@0: 	pt = X509_TRUST_get0(idx);
sl@0: 	return pt->check_trust(pt, x, flags);
sl@0: }
sl@0: 
sl@0: EXPORT_C int X509_TRUST_get_count(void)
sl@0: {
sl@0: 	if(!trtable) return X509_TRUST_COUNT;
sl@0: 	return sk_X509_TRUST_num(trtable) + X509_TRUST_COUNT;
sl@0: }
sl@0: 
sl@0: EXPORT_C X509_TRUST * X509_TRUST_get0(int idx)
sl@0: {
sl@0: 	if(idx < 0) return NULL;
sl@0: 	if(idx < (int)X509_TRUST_COUNT) return ((X509_TRUST *)trstandard + idx);
sl@0: 	return sk_X509_TRUST_value(trtable, idx - X509_TRUST_COUNT);
sl@0: }
sl@0: 
sl@0: EXPORT_C int X509_TRUST_get_by_id(int id)
sl@0: {
sl@0: 	X509_TRUST tmp;
sl@0: 	int idx;
sl@0: 	if((id >= X509_TRUST_MIN) && (id <= X509_TRUST_MAX))
sl@0: 				 return id - X509_TRUST_MIN;
sl@0: 	tmp.trust = id;
sl@0: 	if(!trtable) return -1;
sl@0: 	idx = sk_X509_TRUST_find(trtable, &tmp);
sl@0: 	if(idx == -1) return -1;
sl@0: 	return idx + X509_TRUST_COUNT;
sl@0: }
sl@0: 
sl@0: EXPORT_C int X509_TRUST_set(int *t, int trust)
sl@0: {
sl@0: 	if(X509_TRUST_get_by_id(trust) == -1) {
sl@0: 		X509err(X509_F_X509_TRUST_SET, X509_R_INVALID_TRUST);
sl@0: 		return 0;
sl@0: 	}
sl@0: 	*t = trust;
sl@0: 	return 1;
sl@0: }
sl@0: 
sl@0: EXPORT_C int X509_TRUST_add(int id, int flags, int (*ck)(X509_TRUST *, X509 *, int),
sl@0: 					char *name, int arg1, void *arg2)
sl@0: {
sl@0: 	int idx;
sl@0: 	X509_TRUST *trtmp;
sl@0: 	/* This is set according to what we change: application can't set it */
sl@0: 	flags &= ~X509_TRUST_DYNAMIC;
sl@0: 	/* This will always be set for application modified trust entries */
sl@0: 	flags |= X509_TRUST_DYNAMIC_NAME;
sl@0: 	/* Get existing entry if any */
sl@0: 	idx = X509_TRUST_get_by_id(id);
sl@0: 	/* Need a new entry */
sl@0: 	if(idx == -1) {
sl@0: 		if(!(trtmp = OPENSSL_malloc(sizeof(X509_TRUST)))) {
sl@0: 			X509err(X509_F_X509_TRUST_ADD,ERR_R_MALLOC_FAILURE);
sl@0: 			return 0;
sl@0: 		}
sl@0: 		trtmp->flags = X509_TRUST_DYNAMIC;
sl@0: 	} else trtmp = X509_TRUST_get0(idx);
sl@0: 
sl@0: 	/* OPENSSL_free existing name if dynamic */
sl@0: 	if(trtmp->flags & X509_TRUST_DYNAMIC_NAME) OPENSSL_free(trtmp->name);
sl@0: 	/* dup supplied name */
sl@0: 	if(!(trtmp->name = BUF_strdup(name))) {
sl@0: 		X509err(X509_F_X509_TRUST_ADD,ERR_R_MALLOC_FAILURE);
sl@0: 		return 0;
sl@0: 	}
sl@0: 	/* Keep the dynamic flag of existing entry */
sl@0: 	trtmp->flags &= X509_TRUST_DYNAMIC;
sl@0: 	/* Set all other flags */
sl@0: 	trtmp->flags |= flags;
sl@0: 
sl@0: 	trtmp->trust = id;
sl@0: 	trtmp->check_trust = ck;
sl@0: 	trtmp->arg1 = arg1;
sl@0: 	trtmp->arg2 = arg2;
sl@0: 
sl@0: 	/* If its a new entry manage the dynamic table */
sl@0: 	if(idx == -1) {
sl@0: 		if(!trtable && !(trtable = sk_X509_TRUST_new(tr_cmp))) {
sl@0: 			X509err(X509_F_X509_TRUST_ADD,ERR_R_MALLOC_FAILURE);
sl@0: 			return 0;
sl@0: 		}
sl@0: 		if (!sk_X509_TRUST_push(trtable, trtmp)) {
sl@0: 			X509err(X509_F_X509_TRUST_ADD,ERR_R_MALLOC_FAILURE);
sl@0: 			return 0;
sl@0: 		}
sl@0: 	}
sl@0: 	return 1;
sl@0: }
sl@0: 
sl@0: static void trtable_free(X509_TRUST *p)
sl@0: 	{
sl@0: 	if(!p) return;
sl@0: 	if (p->flags & X509_TRUST_DYNAMIC) 
sl@0: 		{
sl@0: 		if (p->flags & X509_TRUST_DYNAMIC_NAME)
sl@0: 			OPENSSL_free(p->name);
sl@0: 		OPENSSL_free(p);
sl@0: 		}
sl@0: 	}
sl@0: 
sl@0: EXPORT_C void X509_TRUST_cleanup(void)
sl@0: {
sl@0: 	unsigned int i;
sl@0: 	for(i = 0; i < X509_TRUST_COUNT; i++) trtable_free((X509_TRUST *)trstandard + i);
sl@0: 	sk_X509_TRUST_pop_free(trtable, trtable_free);
sl@0: 	trtable = NULL;
sl@0: }
sl@0: 
sl@0: EXPORT_C int X509_TRUST_get_flags(X509_TRUST *xp)
sl@0: {
sl@0: 	return xp->flags;
sl@0: }
sl@0: 
sl@0: EXPORT_C char *X509_TRUST_get0_name(X509_TRUST *xp)
sl@0: {
sl@0: 	return xp->name;
sl@0: }
sl@0: 
sl@0: EXPORT_C int X509_TRUST_get_trust(X509_TRUST *xp)
sl@0: {
sl@0: 	return xp->trust;
sl@0: }
sl@0: 
sl@0: static int trust_1oidany(X509_TRUST *trust, X509 *x, int flags)
sl@0: {
sl@0: 	if(x->aux && (x->aux->trust || x->aux->reject))
sl@0: 		return obj_trust(trust->arg1, x, flags);
sl@0: 	/* we don't have any trust settings: for compatibility
sl@0: 	 * we return trusted if it is self signed
sl@0: 	 */
sl@0: 	return trust_compat(trust, x, flags);
sl@0: }
sl@0: 
sl@0: static int trust_1oid(X509_TRUST *trust, X509 *x, int flags)
sl@0: {
sl@0: 	if(x->aux) return obj_trust(trust->arg1, x, flags);
sl@0: 	return X509_TRUST_UNTRUSTED;
sl@0: }
sl@0: 
sl@0: static int trust_compat(X509_TRUST *trust, X509 *x, int flags)
sl@0: {
sl@0: 	X509_check_purpose(x, -1, 0);
sl@0: 	if(x->ex_flags & EXFLAG_SS) return X509_TRUST_TRUSTED;
sl@0: 	else return X509_TRUST_UNTRUSTED;
sl@0: }
sl@0: 
sl@0: static int obj_trust(int id, X509 *x, int flags)
sl@0: {
sl@0: 	ASN1_OBJECT *obj;
sl@0: 	int i;
sl@0: 	X509_CERT_AUX *ax;
sl@0: 	ax = x->aux;
sl@0: 	if(!ax) return X509_TRUST_UNTRUSTED;
sl@0: 	if(ax->reject) {
sl@0: 		for(i = 0; i < sk_ASN1_OBJECT_num(ax->reject); i++) {
sl@0: 			obj = sk_ASN1_OBJECT_value(ax->reject, i);
sl@0: 			if(OBJ_obj2nid(obj) == id) return X509_TRUST_REJECTED;
sl@0: 		}
sl@0: 	}	
sl@0: 	if(ax->trust) {
sl@0: 		for(i = 0; i < sk_ASN1_OBJECT_num(ax->trust); i++) {
sl@0: 			obj = sk_ASN1_OBJECT_value(ax->trust, i);
sl@0: 			if(OBJ_obj2nid(obj) == id) return X509_TRUST_TRUSTED;
sl@0: 		}
sl@0: 	}
sl@0: 	return X509_TRUST_UNTRUSTED;
sl@0: }
sl@0: