Oops! Commit died on me :-(

/* 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(X509_TRUST **a, X509_TRUST **b);

static void trtable_free(X509_TRUST *p);

static int trust_1bit(X509_TRUST *trust, X509 *x, int flags);

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

static X509_TRUST trstandard[] = {

{X509_TRUST_ANY, 0, trust_any, "Any", 0, NULL},

{X509_TRUST_SSL_CLIENT, 0, trust_1bit, "SSL Client", X509_TRUST_BIT_SSL_CLIENT, NULL},

{X509_TRUST_SSL_SERVER, 0, trust_1bit, "SSL Client", X509_TRUST_BIT_SSL_SERVER, NULL},

{X509_TRUST_EMAIL, 0, trust_1bit, "S/MIME email", X509_TRUST_BIT_EMAIL, NULL},

{X509_TRUST_OBJECT_SIGN, 0, trust_1bit, "Object Signing", X509_TRUST_BIT_OBJECT_SIGN, NULL},

{0, 0, NULL, NULL, 0, NULL}

};

IMPLEMENT_STACK_OF(X509_TRUST)

static STACK_OF(X509_TRUST) *trtable = NULL;

static int tr_cmp(X509_TRUST **a, X509_TRUST **b)

{

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

}

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

{

	int idx;

	X509_TRUST *pt;

	if(id == -1) return 1;

	idx = X509_TRUST_get_by_id(id);

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

	pt = sk_X509_TRUST_value(trtable, idx);

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

}

int X509_TRUST_get_count(void)

{

	return sk_X509_TRUST_num(trtable);

}

X509_TRUST * X509_TRUST_iget(int idx)

{

	return sk_X509_TRUST_value(trtable, idx);

}

int X509_TRUST_get_by_id(int id)

{

	X509_TRUST tmp;

	tmp.trust_id = id;

	if(!trtable) return -1;

	return sk_X509_TRUST_find(trtable, &tmp);

}

int X509_TRUST_add(X509_TRUST *xp)

{

	int idx;

	if(!trtable)

		{

		trtable = sk_X509_TRUST_new(tr_cmp);

		if (!trtable) 

			{

			X509err(X509_F_X509_TRUST_ADD,ERR_R_MALLOC_FAILURE);

			return 0;

			}

		}

	idx = X509_TRUST_get_by_id(xp->trust_id);

	if(idx != -1) {

		trtable_free(sk_X509_TRUST_value(trtable, idx));

		sk_X509_TRUST_set(trtable, idx, xp);

	} else {

		if (!sk_X509_TRUST_push(trtable, xp)) {

			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->trust_flags & X509_TRUST_DYNAMIC) 

		{

		if (p->trust_flags & X509_TRUST_DYNAMIC_NAME)

			Free(p->trust_name);

		Free(p);

		}

	}

void X509_TRUST_cleanup(void)

{

	sk_X509_TRUST_pop_free(trtable, trtable_free);

	trtable = NULL;

}

void X509_TRUST_add_standard(void)

{

	X509_TRUST *xp;

	for(xp = trstandard; xp->trust_name; xp++)

		X509_TRUST_add(xp);

}

int X509_TRUST_get_id(X509_TRUST *xp)

{

	return xp->trust_id;

}

char *X509_TRUST_iget_name(X509_TRUST *xp)

{

	return xp->trust_name;

}

int X509_TRUST_get_trust(X509_TRUST *xp)

{

	return xp->trust_id;

}

static int trust_1bit(X509_TRUST *trust, X509 *x, int flags)

{

	X509_CERT_AUX *ax;

	ax = x->aux;

	if(ax) {

		if(ax->reject

			&& ( ASN1_BIT_STRING_get_bit(ax->reject, X509_TRUST_BIT_ALL)

			|| ASN1_BIT_STRING_get_bit(ax->reject, trust->arg1)))

							return X509_TRUST_REJECTED;

		if(ax->trust && (ASN1_BIT_STRING_get_bit(ax->trust, X509_TRUST_BIT_ALL)

			|| ASN1_BIT_STRING_get_bit(ax->trust, trust->arg1)))

							return X509_TRUST_TRUSTED;

		return X509_TRUST_UNTRUSTED;

	}

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

	 * we return trusted if it is self signed

	 */

	X509_check_purpose(x, -1, 0);

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

	else return X509_TRUST_UNTRUSTED;

}

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

{

	return X509_TRUST_TRUSTED;

}