[thirdparty/openssl.git] / crypto / x509 / x509_trs.c

/* 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).
 *
 */

#include <stdio.h>
#include "cryptlib.h"
#include <openssl/x509v3.h>


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;

/* 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 Client", NID_server_auth, NULL},
{X509_TRUST_EMAIL, 0, trust_1oidany, "S/MIME email", NID_email_protect, NULL},
{X509_TRUST_OCSP_SIGN, 0, trust_1oid, "OCSP responder", NID_OCSP_sign, NULL}
};

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

IMPLEMENT_STACK_OF(X509_TRUST)

static STACK_OF(X509_TRUST) *trtable = NULL;

static int tr_cmp(const X509_TRUST * const *a,
		const X509_TRUST * const *b)
{
	return (*a)->trust - (*b)->trust;
}

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;
}


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);
}

int X509_TRUST_get_count(void)
{
	if(!trtable) return X509_TRUST_COUNT;
	return sk_X509_TRUST_num(trtable) + X509_TRUST_COUNT;
}

X509_TRUST * X509_TRUST_get0(int idx)
{
	if(idx < 0) return NULL;
	if(idx < X509_TRUST_COUNT) return trstandard + idx;
	return sk_X509_TRUST_value(trtable, idx - X509_TRUST_COUNT);
}

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;
}

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);
		}
	}

void X509_TRUST_cleanup(void)
{
	int i;
	for(i = 0; i < X509_TRUST_COUNT; i++) trtable_free(trstandard + i);
	sk_X509_TRUST_pop_free(trtable, trtable_free);
	trtable = NULL;
}

int X509_TRUST_get_flags(X509_TRUST *xp)
{
	return xp->flags;
}

char *X509_TRUST_get0_name(X509_TRUST *xp)
{
	return xp->name;
}

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) 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;
}
Commit	Line	Data
21f77552 DSH	1	/* x509_trs.c */
	2	/* Written by Dr Stephen N Henson (shenson@bigfoot.com) for the OpenSSL
	3	* project 1999.
	4	*/
	5	/* ====================================================================
	6	* Copyright (c) 1999 The OpenSSL Project. All rights reserved.
	7	*
	8	* Redistribution and use in source and binary forms, with or without
	9	* modification, are permitted provided that the following conditions
	10	* are met:
	11	*
	12	* 1. Redistributions of source code must retain the above copyright
	13	* notice, this list of conditions and the following disclaimer.
	14	*
	15	* 2. Redistributions in binary form must reproduce the above copyright
	16	* notice, this list of conditions and the following disclaimer in
	17	* the documentation and/or other materials provided with the
	18	* distribution.
	19	*
	20	* 3. All advertising materials mentioning features or use of this
	21	* software must display the following acknowledgment:
	22	* "This product includes software developed by the OpenSSL Project
	23	* for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)"
	24	*
	25	* 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
	26	* endorse or promote products derived from this software without
	27	* prior written permission. For written permission, please contact
	28	* licensing@OpenSSL.org.
	29	*
	30	* 5. Products derived from this software may not be called "OpenSSL"
	31	* nor may "OpenSSL" appear in their names without prior written
	32	* permission of the OpenSSL Project.
	33	*
	34	* 6. Redistributions of any form whatsoever must retain the following
	35	* acknowledgment:
	36	* "This product includes software developed by the OpenSSL Project
	37	* for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)"
	38	*
	39	* THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
	40	* EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
	41	* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
	42	* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OpenSSL PROJECT OR
	43	* ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
	44	* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
	45	* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
	46	* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
	47	* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
	48	* STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
	49	* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
	50	* OF THE POSSIBILITY OF SUCH DAMAGE.
	51	* ====================================================================
	52	*
	53	* This product includes cryptographic software written by Eric Young
	54	* (eay@cryptsoft.com). This product includes software written by Tim
	55	* Hudson (tjh@cryptsoft.com).
	56	*
	57	*/
	58
	59	#include <stdio.h>
	60	#include "cryptlib.h"
	61	#include <openssl/x509v3.h>
	62
	63
ccd86b68 GT	64	static int tr_cmp(const X509_TRUST * const *a,
ccd86b68 GT	65	const X509_TRUST * const *b);
21f77552 DSH	66	static void trtable_free(X509_TRUST *p);
21f77552 DSH	67
6447cce3	68	static int trust_1oidany(X509_TRUST trust, X509 x, int flags);
81f169e9	69	static int trust_1oid(X509_TRUST trust, X509 x, int flags);
068fdce8	70	static int trust_compat(X509_TRUST trust, X509 x, int flags);
21f77552	71
6447cce3 DSH	72	static int obj_trust(int id, X509 *x, int flags);
	73	static int (default_trust)(int id, X509 x, int flags) = obj_trust;
	74
dd413410 DSH	75	/* WARNING: the following table should be kept in order of trust
	76	* and without any gaps so we can just subtract the minimum trust
	77	* value to get an index into the table
	78	*/
	79
21f77552	80	static X509_TRUST trstandard[] = {
068fdce8	81	{X509_TRUST_COMPAT, 0, trust_compat, "compatible", 0, NULL},
6447cce3 DSH	82	{X509_TRUST_SSL_CLIENT, 0, trust_1oidany, "SSL Client", NID_client_auth, NULL},
	83	{X509_TRUST_SSL_SERVER, 0, trust_1oidany, "SSL Client", NID_server_auth, NULL},
	84	{X509_TRUST_EMAIL, 0, trust_1oidany, "S/MIME email", NID_email_protect, NULL},
81f169e9	85	{X509_TRUST_OCSP_SIGN, 0, trust_1oid, "OCSP responder", NID_OCSP_sign, NULL}
21f77552 DSH	86	};
21f77552 DSH	87
dd413410 DSH	88	#define X509_TRUST_COUNT (sizeof(trstandard)/sizeof(X509_TRUST))
dd413410 DSH	89
21f77552 DSH	90	IMPLEMENT_STACK_OF(X509_TRUST)
	91
	92	static STACK_OF(X509_TRUST) *trtable = NULL;
	93
ccd86b68 GT	94	static int tr_cmp(const X509_TRUST * const *a,
ccd86b68 GT	95	const X509_TRUST * const *b)
21f77552	96	{
dd413410	97	return (a)->trust - (b)->trust;
21f77552 DSH	98	}
21f77552 DSH	99
6447cce3 DSH	100	int (X509_TRUST_set_default(int (trust)(int , X509 , int)))(int, X509 , int)
6447cce3 DSH	101	{
78f3a2aa BM	102	int (oldtrust)(int , X509 , int);
	103	oldtrust = default_trust;
	104	default_trust = trust;
	105	return oldtrust;
6447cce3 DSH	106	}
	107
	108
21f77552 DSH	109	int X509_check_trust(X509 *x, int id, int flags)
21f77552 DSH	110	{
21f77552	111	X509_TRUST *pt;
dd413410	112	int idx;
21f77552	113	if(id == -1) return 1;
068fdce8 DSH	114	idx = X509_TRUST_get_by_id(id);
068fdce8 DSH	115	if(idx == -1) return default_trust(id, x, flags);
6d0d5431	116	pt = X509_TRUST_get0(idx);
21f77552 DSH	117	return pt->check_trust(pt, x, flags);
	118	}
	119
	120	int X509_TRUST_get_count(void)
	121	{
dd413410 DSH	122	if(!trtable) return X509_TRUST_COUNT;
dd413410 DSH	123	return sk_X509_TRUST_num(trtable) + X509_TRUST_COUNT;
21f77552 DSH	124	}
21f77552 DSH	125
6d0d5431	126	X509_TRUST * X509_TRUST_get0(int idx)
21f77552	127	{
dd413410 DSH	128	if(idx < 0) return NULL;
	129	if(idx < X509_TRUST_COUNT) return trstandard + idx;
	130	return sk_X509_TRUST_value(trtable, idx - X509_TRUST_COUNT);
21f77552 DSH	131	}
	132
	133	int X509_TRUST_get_by_id(int id)
	134	{
	135	X509_TRUST tmp;
dd413410 DSH	136	int idx;
	137	if((id >= X509_TRUST_MIN) && (id <= X509_TRUST_MAX))
	138	return id - X509_TRUST_MIN;
	139	tmp.trust = id;
21f77552	140	if(!trtable) return -1;
dd413410 DSH	141	idx = sk_X509_TRUST_find(trtable, &tmp);
	142	if(idx == -1) return -1;
	143	return idx + X509_TRUST_COUNT;
21f77552 DSH	144	}
21f77552 DSH	145
dd413410 DSH	146	int X509_TRUST_add(int id, int flags, int (ck)(X509_TRUST , X509 *, int),
dd413410 DSH	147	char name, int arg1, void arg2)
21f77552 DSH	148	{
21f77552 DSH	149	int idx;
dd413410 DSH	150	X509_TRUST *trtmp;
	151	/* This is set according to what we change: application can't set it */
	152	flags &= ~X509_TRUST_DYNAMIC;
	153	/* This will always be set for application modified trust entries */
	154	flags \|= X509_TRUST_DYNAMIC_NAME;
	155	/* Get existing entry if any */
	156	idx = X509_TRUST_get_by_id(id);
	157	/* Need a new entry */
	158	if(idx == -1) {
26a3a48d	159	if(!(trtmp = OPENSSL_malloc(sizeof(X509_TRUST)))) {
21f77552 DSH	160	X509err(X509_F_X509_TRUST_ADD,ERR_R_MALLOC_FAILURE);
21f77552 DSH	161	return 0;
21f77552	162	}
dd413410	163	trtmp->flags = X509_TRUST_DYNAMIC;
6d0d5431	164	} else trtmp = X509_TRUST_get0(idx);
dd413410	165
26a3a48d RL	166	/* OPENSSL_free existing name if dynamic */
26a3a48d RL	167	if(trtmp->flags & X509_TRUST_DYNAMIC_NAME) OPENSSL_free(trtmp->name);
dd413410 DSH	168	/* dup supplied name */
	169	if(!(trtmp->name = BUF_strdup(name))) {
	170	X509err(X509_F_X509_TRUST_ADD,ERR_R_MALLOC_FAILURE);
	171	return 0;
	172	}
	173	/* Keep the dynamic flag of existing entry */
	174	trtmp->flags &= X509_TRUST_DYNAMIC;
	175	/* Set all other flags */
	176	trtmp->flags \|= flags;
	177
	178	trtmp->trust = id;
	179	trtmp->check_trust = ck;
	180	trtmp->arg1 = arg1;
	181	trtmp->arg2 = arg2;
	182
	183	/* If its a new entry manage the dynamic table */
	184	if(idx == -1) {
	185	if(!trtable && !(trtable = sk_X509_TRUST_new(tr_cmp))) {
	186	X509err(X509_F_X509_TRUST_ADD,ERR_R_MALLOC_FAILURE);
	187	return 0;
	188	}
	189	if (!sk_X509_TRUST_push(trtable, trtmp)) {
21f77552 DSH	190	X509err(X509_F_X509_TRUST_ADD,ERR_R_MALLOC_FAILURE);
	191	return 0;
	192	}
	193	}
	194	return 1;
	195	}
	196
	197	static void trtable_free(X509_TRUST *p)
	198	{
	199	if(!p) return;
dd413410	200	if (p->flags & X509_TRUST_DYNAMIC)
21f77552	201	{
dd413410	202	if (p->flags & X509_TRUST_DYNAMIC_NAME)
26a3a48d RL	203	OPENSSL_free(p->name);
26a3a48d RL	204	OPENSSL_free(p);
21f77552 DSH	205	}
	206	}
	207
	208	void X509_TRUST_cleanup(void)
	209	{
dd413410 DSH	210	int i;
dd413410 DSH	211	for(i = 0; i < X509_TRUST_COUNT; i++) trtable_free(trstandard + i);
21f77552 DSH	212	sk_X509_TRUST_pop_free(trtable, trtable_free);
	213	trtable = NULL;
	214	}
	215
dd413410	216	int X509_TRUST_get_flags(X509_TRUST *xp)
21f77552	217	{
dd413410	218	return xp->flags;
21f77552 DSH	219	}
21f77552 DSH	220
c7cb16a8	221	char X509_TRUST_get0_name(X509_TRUST xp)
21f77552	222	{
dd413410	223	return xp->name;
21f77552 DSH	224	}
	225
	226	int X509_TRUST_get_trust(X509_TRUST *xp)
	227	{
dd413410	228	return xp->trust;
21f77552 DSH	229	}
21f77552 DSH	230
6447cce3	231	static int trust_1oidany(X509_TRUST trust, X509 x, int flags)
21f77552	232	{
6447cce3	233	if(x->aux) return obj_trust(trust->arg1, x, flags);
657e60fa	234	/* we don't have any trust settings: for compatibility
21f77552 DSH	235	* we return trusted if it is self signed
21f77552 DSH	236	*/
068fdce8 DSH	237	return trust_compat(trust, x, flags);
	238	}
	239
81f169e9 DSH	240	static int trust_1oid(X509_TRUST trust, X509 x, int flags)
	241	{
	242	if(x->aux) return obj_trust(trust->arg1, x, flags);
	243	return X509_TRUST_UNTRUSTED;
	244	}
	245
068fdce8 DSH	246	static int trust_compat(X509_TRUST trust, X509 x, int flags)
068fdce8 DSH	247	{
21f77552 DSH	248	X509_check_purpose(x, -1, 0);
	249	if(x->ex_flags & EXFLAG_SS) return X509_TRUST_TRUSTED;
	250	else return X509_TRUST_UNTRUSTED;
	251	}
	252
6447cce3 DSH	253	static int obj_trust(int id, X509 *x, int flags)
	254	{
	255	ASN1_OBJECT *obj;
	256	int i;
	257	X509_CERT_AUX *ax;
	258	ax = x->aux;
	259	if(!ax) return X509_TRUST_UNTRUSTED;
	260	if(ax->reject) {
	261	for(i = 0; i < sk_ASN1_OBJECT_num(ax->reject); i++) {
	262	obj = sk_ASN1_OBJECT_value(ax->reject, i);
	263	if(OBJ_obj2nid(obj) == id) return X509_TRUST_REJECTED;
	264	}
	265	}
	266	if(ax->trust) {
	267	for(i = 0; i < sk_ASN1_OBJECT_num(ax->trust); i++) {
	268	obj = sk_ASN1_OBJECT_value(ax->trust, i);
	269	if(OBJ_obj2nid(obj) == id) return X509_TRUST_TRUSTED;
	270	}
	271	}
	272	return X509_TRUST_UNTRUSTED;
	273	}
	274