[thirdparty/openssl.git] / crypto / asn1 / x_crl.c

/* crypto/asn1/x_crl.c */
/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
 * All rights reserved.
 *
 * This package is an SSL implementation written
 * by Eric Young (eay@cryptsoft.com).
 * The implementation was written so as to conform with Netscapes SSL.
 * 
 * This library is free for commercial and non-commercial use as long as
 * the following conditions are aheared to.  The following conditions
 * apply to all code found in this distribution, be it the RC4, RSA,
 * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
 * included with this distribution is covered by the same copyright terms
 * except that the holder is Tim Hudson (tjh@cryptsoft.com).
 * 
 * Copyright remains Eric Young's, and as such any Copyright notices in
 * the code are not to be removed.
 * If this package is used in a product, Eric Young should be given attribution
 * as the author of the parts of the library used.
 * This can be in the form of a textual message at program startup or
 * in documentation (online or textual) provided with the package.
 * 
 * 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 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 acknowledgement:
 *    "This product includes cryptographic software written by
 *     Eric Young (eay@cryptsoft.com)"
 *    The word 'cryptographic' can be left out if the rouines from the library
 *    being used are not cryptographic related :-).
 * 4. If you include any Windows specific code (or a derivative thereof) from 
 *    the apps directory (application code) you must include an acknowledgement:
 *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
 * 
 * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
 * ANY EXPRESS 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 AUTHOR OR 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.
 * 
 * The licence and distribution terms for any publically available version or
 * derivative of this code cannot be changed.  i.e. this code cannot simply be
 * copied and put under another distribution licence
 * [including the GNU Public Licence.]
 */

#include <stdio.h>
#include "cryptlib.h"
#include <openssl/asn1t.h>
#include "asn1_locl.h"
#include <openssl/x509.h>
#include <openssl/x509v3.h>

static int X509_REVOKED_cmp(const X509_REVOKED * const *a,
				const X509_REVOKED * const *b);
static void setup_idp(X509_CRL *crl, ISSUING_DIST_POINT *idp);

ASN1_SEQUENCE(X509_REVOKED) = {
	ASN1_SIMPLE(X509_REVOKED,serialNumber, ASN1_INTEGER),
	ASN1_SIMPLE(X509_REVOKED,revocationDate, ASN1_TIME),
	ASN1_SEQUENCE_OF_OPT(X509_REVOKED,extensions, X509_EXTENSION)
} ASN1_SEQUENCE_END(X509_REVOKED)

static int def_crl_verify(X509_CRL *crl, EVP_PKEY *r);
static int def_crl_lookup(X509_CRL *crl,
		X509_REVOKED **ret, ASN1_INTEGER *serial, X509_NAME *issuer);

static X509_CRL_METHOD int_crl_meth =
	{
	0,
	0,0,
	def_crl_lookup,
	def_crl_verify
	};

static const X509_CRL_METHOD *default_crl_method = &int_crl_meth;

/* The X509_CRL_INFO structure needs a bit of customisation.
 * Since we cache the original encoding the signature wont be affected by
 * reordering of the revoked field.
 */
static int crl_inf_cb(int operation, ASN1_VALUE **pval, const ASN1_ITEM *it,
								void *exarg)
{
	X509_CRL_INFO *a = (X509_CRL_INFO *)*pval;

	if(!a || !a->revoked) return 1;
	switch(operation) {
		/* Just set cmp function here. We don't sort because that
		 * would affect the output of X509_CRL_print().
		 */
		case ASN1_OP_D2I_POST:
		(void)sk_X509_REVOKED_set_cmp_func(a->revoked,X509_REVOKED_cmp);
		break;
	}
	return 1;
}


ASN1_SEQUENCE_enc(X509_CRL_INFO, enc, crl_inf_cb) = {
	ASN1_OPT(X509_CRL_INFO, version, ASN1_INTEGER),
	ASN1_SIMPLE(X509_CRL_INFO, sig_alg, X509_ALGOR),
	ASN1_SIMPLE(X509_CRL_INFO, issuer, X509_NAME),
	ASN1_SIMPLE(X509_CRL_INFO, lastUpdate, ASN1_TIME),
	ASN1_OPT(X509_CRL_INFO, nextUpdate, ASN1_TIME),
	ASN1_SEQUENCE_OF_OPT(X509_CRL_INFO, revoked, X509_REVOKED),
	ASN1_EXP_SEQUENCE_OF_OPT(X509_CRL_INFO, extensions, X509_EXTENSION, 0)
} ASN1_SEQUENCE_END_enc(X509_CRL_INFO, X509_CRL_INFO)

/* Set CRL entry issuer according to CRL certificate issuer extension.
 * Check for unhandled critical CRL entry extensions.
 */

static int crl_set_issuers(X509_CRL *crl)
	{

	int i, j;
	GENERAL_NAMES *gens, *gtmp;
	STACK_OF(X509_REVOKED) *revoked;

	revoked = X509_CRL_get_REVOKED(crl);

	gens = NULL;
	for (i = 0; i < sk_X509_REVOKED_num(revoked); i++)
		{
		X509_REVOKED *rev = sk_X509_REVOKED_value(revoked, i);
		STACK_OF(X509_EXTENSION) *exts;
		ASN1_ENUMERATED *reason;
		X509_EXTENSION *ext;
		gtmp = X509_REVOKED_get_ext_d2i(rev, 
						NID_certificate_issuer,
						&j, NULL);
		if (!gtmp && (j != -1))
			{
			crl->flags |= EXFLAG_INVALID;
			return 1;
			}

		if (gtmp)
			{
			gens = gtmp;
			if (!crl->issuers)
				{
				crl->issuers = sk_GENERAL_NAMES_new_null();
				if (!crl->issuers)
					return 0;
				}
			if (!sk_GENERAL_NAMES_push(crl->issuers, gtmp))
				return 0;
			}
		rev->issuer = gens;

		reason = X509_REVOKED_get_ext_d2i(rev, NID_crl_reason,
								&j, NULL);
		if (!reason && (j != -1))
			{
			crl->flags |= EXFLAG_INVALID;
			return 1;
			}

		if (reason)
			{
			rev->reason = ASN1_ENUMERATED_get(reason);
			ASN1_ENUMERATED_free(reason);
			}
		else
			rev->reason = CRL_REASON_NONE;	

		/* Check for critical CRL entry extensions */

		exts = rev->extensions;

		for (j = 0; j < sk_X509_EXTENSION_num(exts); j++)
			{
			ext = sk_X509_EXTENSION_value(exts, j);
			if (ext->critical > 0)
				{
				if (OBJ_obj2nid(ext->object) ==
					NID_certificate_issuer)
					continue;
				crl->flags |= EXFLAG_CRITICAL;
				break;
				}
			}


		}

	return 1;

	}

/* The X509_CRL structure needs a bit of customisation. Cache some extensions
 * and hash of the whole CRL.
 */
static int crl_cb(int operation, ASN1_VALUE **pval, const ASN1_ITEM *it,
								void *exarg)
	{
	X509_CRL *crl = (X509_CRL *)*pval;
	STACK_OF(X509_EXTENSION) *exts;
	X509_EXTENSION *ext;
	int idx;

	switch(operation)
		{
		case ASN1_OP_NEW_POST:
		crl->idp = NULL;
		crl->akid = NULL;
		crl->flags = 0;
		crl->idp_flags = 0;
		crl->idp_reasons = CRLDP_ALL_REASONS;
		crl->meth = default_crl_method;
		crl->meth_data = NULL;
		crl->issuers = NULL;
		crl->crl_number = NULL;
		crl->base_crl_number = NULL;
		break;

		case ASN1_OP_D2I_POST:
#ifndef OPENSSL_NO_SHA
		X509_CRL_digest(crl, EVP_sha1(), crl->sha1_hash, NULL);
#endif
		crl->idp = X509_CRL_get_ext_d2i(crl,
				NID_issuing_distribution_point, NULL, NULL);
		if (crl->idp)
			setup_idp(crl, crl->idp);

		crl->akid = X509_CRL_get_ext_d2i(crl,
				NID_authority_key_identifier, NULL, NULL);	

		crl->crl_number = X509_CRL_get_ext_d2i(crl,
				NID_crl_number, NULL, NULL);	

		crl->base_crl_number = X509_CRL_get_ext_d2i(crl,
				NID_delta_crl, NULL, NULL);	
		/* Delta CRLs must have CRL number */
		if (crl->base_crl_number && !crl->crl_number)
			crl->flags |= EXFLAG_INVALID;

		/* See if we have any unhandled critical CRL extensions and 
		 * indicate this in a flag. We only currently handle IDP so
		 * anything else critical sets the flag.
		 *
		 * This code accesses the X509_CRL structure directly:
		 * applications shouldn't do this.
		 */

		exts = crl->crl->extensions;

		for (idx = 0; idx < sk_X509_EXTENSION_num(exts); idx++)
			{
			int nid;
			ext = sk_X509_EXTENSION_value(exts, idx);
			nid = OBJ_obj2nid(ext->object);
			if (nid == NID_freshest_crl)
				crl->flags |= EXFLAG_FRESHEST;
			if (ext->critical > 0)
				{
				/* We handle IDP and deltas */
				if ((nid == NID_issuing_distribution_point)
					|| (nid == NID_authority_key_identifier)
					|| (nid == NID_delta_crl))
					break;;
				crl->flags |= EXFLAG_CRITICAL;
				break;
				}
			}


		if (!crl_set_issuers(crl))
			return 0;

		if (crl->meth->crl_init)
			{
			if (crl->meth->crl_init(crl) == 0)
				return 0;
			}
		break;

		case ASN1_OP_FREE_POST:
		if (crl->meth->crl_free)
			{
			if (!crl->meth->crl_free(crl))
				return 0;
			}
		if (crl->akid)
			AUTHORITY_KEYID_free(crl->akid);
		if (crl->idp)
			ISSUING_DIST_POINT_free(crl->idp);
		ASN1_INTEGER_free(crl->crl_number);
		ASN1_INTEGER_free(crl->base_crl_number);
		sk_GENERAL_NAMES_pop_free(crl->issuers, GENERAL_NAMES_free);
		break;
		}
	return 1;
	}

/* Convert IDP into a more convenient form */

static void setup_idp(X509_CRL *crl, ISSUING_DIST_POINT *idp)
	{
	int idp_only = 0;
	/* Set various flags according to IDP */
	crl->idp_flags |= IDP_PRESENT;
	if (idp->onlyuser > 0)
		{
		idp_only++;
		crl->idp_flags |= IDP_ONLYUSER;
		}
	if (idp->onlyCA > 0)
		{
		idp_only++;
		crl->idp_flags |= IDP_ONLYCA;
		}
	if (idp->onlyattr > 0)
		{
		idp_only++;
		crl->idp_flags |= IDP_ONLYATTR;
		}

	if (idp_only > 1)
		crl->idp_flags |= IDP_INVALID;

	if (idp->indirectCRL > 0)
		crl->idp_flags |= IDP_INDIRECT;

	if (idp->onlysomereasons)
		{
		crl->idp_flags |= IDP_REASONS;
		if (idp->onlysomereasons->length > 0)
			crl->idp_reasons = idp->onlysomereasons->data[0];
		if (idp->onlysomereasons->length > 1)
			crl->idp_reasons |=
				(idp->onlysomereasons->data[1] << 8);
		crl->idp_reasons &= CRLDP_ALL_REASONS;
		}

	DIST_POINT_set_dpname(idp->distpoint, X509_CRL_get_issuer(crl));
	}

ASN1_SEQUENCE_ref(X509_CRL, crl_cb, CRYPTO_LOCK_X509_CRL) = {
	ASN1_SIMPLE(X509_CRL, crl, X509_CRL_INFO),
	ASN1_SIMPLE(X509_CRL, sig_alg, X509_ALGOR),
	ASN1_SIMPLE(X509_CRL, signature, ASN1_BIT_STRING)
} ASN1_SEQUENCE_END_ref(X509_CRL, X509_CRL)

IMPLEMENT_ASN1_FUNCTIONS(X509_REVOKED)
IMPLEMENT_ASN1_DUP_FUNCTION(X509_REVOKED)
IMPLEMENT_ASN1_FUNCTIONS(X509_CRL_INFO)
IMPLEMENT_ASN1_FUNCTIONS(X509_CRL)
IMPLEMENT_ASN1_DUP_FUNCTION(X509_CRL)

static int X509_REVOKED_cmp(const X509_REVOKED * const *a,
			const X509_REVOKED * const *b)
	{
	return(ASN1_STRING_cmp(
		(ASN1_STRING *)(*a)->serialNumber,
		(ASN1_STRING *)(*b)->serialNumber));
	}

int X509_CRL_add0_revoked(X509_CRL *crl, X509_REVOKED *rev)
{
	X509_CRL_INFO *inf;
	inf = crl->crl;
	if(!inf->revoked)
		inf->revoked = sk_X509_REVOKED_new(X509_REVOKED_cmp);
	if(!inf->revoked || !sk_X509_REVOKED_push(inf->revoked, rev)) {
		ASN1err(ASN1_F_X509_CRL_ADD0_REVOKED, ERR_R_MALLOC_FAILURE);
		return 0;
	}
	inf->enc.modified = 1;
	return 1;
}

int X509_CRL_verify(X509_CRL *crl, EVP_PKEY *r)
	{
	if (crl->meth->crl_verify)
		return crl->meth->crl_verify(crl, r);
	return 0;
	}

int X509_CRL_get0_by_serial(X509_CRL *crl,
		X509_REVOKED **ret, ASN1_INTEGER *serial)
	{
	if (crl->meth->crl_lookup)
		return crl->meth->crl_lookup(crl, ret, serial, NULL);
	return 0;
	}

int X509_CRL_get0_by_cert(X509_CRL *crl, X509_REVOKED **ret, X509 *x)
	{
	if (crl->meth->crl_lookup)
		return crl->meth->crl_lookup(crl, ret,
						X509_get_serialNumber(x),
						X509_get_issuer_name(x));
	return 0;
	}

static int def_crl_verify(X509_CRL *crl, EVP_PKEY *r)
	{
	return(ASN1_item_verify(ASN1_ITEM_rptr(X509_CRL_INFO),
		crl->sig_alg, crl->signature,crl->crl,r));
	}

static int crl_revoked_issuer_match(X509_CRL *crl, X509_NAME *nm,
						X509_REVOKED *rev)
	{
	int i;

	if (!rev->issuer)
		{
		if (!nm)
			return 1;
		if (!X509_NAME_cmp(nm, X509_CRL_get_issuer(crl)))
			return 1;
		return 0;
		}

	if (!nm)
		nm = X509_CRL_get_issuer(crl);

	for (i = 0; i < sk_GENERAL_NAME_num(rev->issuer); i++)
		{
		GENERAL_NAME *gen = sk_GENERAL_NAME_value(rev->issuer, i);
		if (gen->type != GEN_DIRNAME)
			continue;
		if (!X509_NAME_cmp(nm, gen->d.directoryName))
			return 1;
		}
	return 0;

	}

static int def_crl_lookup(X509_CRL *crl,
		X509_REVOKED **ret, ASN1_INTEGER *serial, X509_NAME *issuer)
	{
	X509_REVOKED rtmp, *rev;
	int idx;
	rtmp.serialNumber = serial;
	/* Sort revoked into serial number order if not already sorted.
	 * Do this under a lock to avoid race condition.
 	 */
	if (!sk_X509_REVOKED_is_sorted(crl->crl->revoked))
		{
		CRYPTO_w_lock(CRYPTO_LOCK_X509_CRL);
		sk_X509_REVOKED_sort(crl->crl->revoked);
		CRYPTO_w_unlock(CRYPTO_LOCK_X509_CRL);
		}
	idx = sk_X509_REVOKED_find(crl->crl->revoked, &rtmp);
	if(idx < 0)
		return 0;
	/* Need to look for matching name */
	for(;idx < sk_X509_REVOKED_num(crl->crl->revoked); idx++)
		{
		rev = sk_X509_REVOKED_value(crl->crl->revoked, idx);
		if (ASN1_INTEGER_cmp(rev->serialNumber, serial))
			return 0;
		if (crl_revoked_issuer_match(crl, issuer, rev))
			{
			if (ret)
				*ret = rev;
			if (rev->reason == CRL_REASON_REMOVE_FROM_CRL)
				return 2;
			return 1;
			}
		}
	return 0;
	}

void X509_CRL_set_default_method(const X509_CRL_METHOD *meth)
	{
	if (meth == NULL)
		default_crl_method = &int_crl_meth;
	else 
		default_crl_method = meth;
	}

X509_CRL_METHOD *X509_CRL_METHOD_new(
	int (*crl_init)(X509_CRL *crl),
	int (*crl_free)(X509_CRL *crl),
	int (*crl_lookup)(X509_CRL *crl, X509_REVOKED **ret,
				ASN1_INTEGER *ser, X509_NAME *issuer),
	int (*crl_verify)(X509_CRL *crl, EVP_PKEY *pk))
	{
	X509_CRL_METHOD *m;
	m = OPENSSL_malloc(sizeof(X509_CRL_METHOD));
	if (!m)
		return NULL;
	m->crl_init = crl_init;
	m->crl_free = crl_free;
	m->crl_lookup = crl_lookup;
	m->crl_verify = crl_verify;
	m->flags = X509_CRL_METHOD_DYNAMIC;
	return m;
	}

void X509_CRL_METHOD_free(X509_CRL_METHOD *m)
	{
	if (!(m->flags & X509_CRL_METHOD_DYNAMIC))
		return;
	OPENSSL_free(m);
	}

void X509_CRL_set_meth_data(X509_CRL *crl, void *dat)
	{
	crl->meth_data = dat;
	}

void *X509_CRL_get_meth_data(X509_CRL *crl)
	{
	return crl->meth_data;
	}

IMPLEMENT_STACK_OF(X509_REVOKED)
IMPLEMENT_ASN1_SET_OF(X509_REVOKED)
IMPLEMENT_STACK_OF(X509_CRL)
IMPLEMENT_ASN1_SET_OF(X509_CRL)
Commit	Line	Data
d02b48c6	1	/* crypto/asn1/x_crl.c */
58964a49	2	/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
d02b48c6 RE	3	* All rights reserved.
	4	*
	5	* This package is an SSL implementation written
	6	* by Eric Young (eay@cryptsoft.com).
	7	* The implementation was written so as to conform with Netscapes SSL.
	8	*
	9	* This library is free for commercial and non-commercial use as long as
	10	* the following conditions are aheared to. The following conditions
	11	* apply to all code found in this distribution, be it the RC4, RSA,
	12	* lhash, DES, etc., code; not just the SSL code. The SSL documentation
	13	* included with this distribution is covered by the same copyright terms
	14	* except that the holder is Tim Hudson (tjh@cryptsoft.com).
	15	*
	16	* Copyright remains Eric Young's, and as such any Copyright notices in
	17	* the code are not to be removed.
	18	* If this package is used in a product, Eric Young should be given attribution
	19	* as the author of the parts of the library used.
	20	* This can be in the form of a textual message at program startup or
	21	* in documentation (online or textual) provided with the package.
	22	*
	23	* Redistribution and use in source and binary forms, with or without
	24	* modification, are permitted provided that the following conditions
	25	* are met:
	26	* 1. Redistributions of source code must retain the copyright
	27	* notice, this list of conditions and the following disclaimer.
	28	* 2. Redistributions in binary form must reproduce the above copyright
	29	* notice, this list of conditions and the following disclaimer in the
	30	* documentation and/or other materials provided with the distribution.
	31	* 3. All advertising materials mentioning features or use of this software
	32	* must display the following acknowledgement:
	33	* "This product includes cryptographic software written by
	34	* Eric Young (eay@cryptsoft.com)"
	35	* The word 'cryptographic' can be left out if the rouines from the library
	36	* being used are not cryptographic related :-).
	37	* 4. If you include any Windows specific code (or a derivative thereof) from
	38	* the apps directory (application code) you must include an acknowledgement:
	39	* "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
	40	*
	41	* THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
	42	* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
	43	* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
	44	* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
	45	* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
	46	* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
	47	* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
	48	* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
	49	* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
	50	* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
	51	* SUCH DAMAGE.
	52	*
	53	* The licence and distribution terms for any publically available version or
	54	* derivative of this code cannot be changed. i.e. this code cannot simply be
	55	* copied and put under another distribution licence
	56	* [including the GNU Public Licence.]
	57	*/
	58
	59	#include <stdio.h>
	60	#include "cryptlib.h"
9d6b1ce6	61	#include <openssl/asn1t.h>
d7d5a55d	62	#include "asn1_locl.h"
ec577822	63	#include <openssl/x509.h>
edc54021	64	#include <openssl/x509v3.h>
d02b48c6	65
ccd86b68 GT	66	static int X509_REVOKED_cmp(const X509_REVOKED * const *a,
ccd86b68 GT	67	const X509_REVOKED * const *b);
4d50a2b4	68	static void setup_idp(X509_CRL crl, ISSUING_DIST_POINT idp);
d02b48c6	69
9d6b1ce6 DSH	70	ASN1_SEQUENCE(X509_REVOKED) = {
	71	ASN1_SIMPLE(X509_REVOKED,serialNumber, ASN1_INTEGER),
	72	ASN1_SIMPLE(X509_REVOKED,revocationDate, ASN1_TIME),
	73	ASN1_SEQUENCE_OF_OPT(X509_REVOKED,extensions, X509_EXTENSION)
d339187b	74	} ASN1_SEQUENCE_END(X509_REVOKED)
9d6b1ce6	75
f4c630ab DSH	76	static int def_crl_verify(X509_CRL crl, EVP_PKEY r);
f4c630ab DSH	77	static int def_crl_lookup(X509_CRL *crl,
d0fff69d	78	X509_REVOKED *ret, ASN1_INTEGER serial, X509_NAME *issuer);
f4c630ab DSH	79
	80	static X509_CRL_METHOD int_crl_meth =
	81	{
	82	0,
	83	0,0,
	84	def_crl_lookup,
	85	def_crl_verify
	86	};
	87
	88	static const X509_CRL_METHOD *default_crl_method = &int_crl_meth;
	89
2f605e8d DSH	90	/* The X509_CRL_INFO structure needs a bit of customisation.
	91	* Since we cache the original encoding the signature wont be affected by
	92	* reordering of the revoked field.
9d6b1ce6	93	*/
24484759 DSH	94	static int crl_inf_cb(int operation, ASN1_VALUE *pval, const ASN1_ITEM it,
24484759 DSH	95	void *exarg)
9d6b1ce6 DSH	96	{
9d6b1ce6 DSH	97	X509_CRL_INFO a = (X509_CRL_INFO )*pval;
d02b48c6	98
9d6b1ce6 DSH	99	if(!a \|\| !a->revoked) return 1;
9d6b1ce6 DSH	100	switch(operation) {
2f605e8d DSH	101	/* Just set cmp function here. We don't sort because that
	102	* would affect the output of X509_CRL_print().
	103	*/
9d6b1ce6	104	case ASN1_OP_D2I_POST:
a6fbcb42	105	(void)sk_X509_REVOKED_set_cmp_func(a->revoked,X509_REVOKED_cmp);
9d6b1ce6	106	break;
d02b48c6	107	}
9d6b1ce6 DSH	108	return 1;
	109	}
	110
	111
2f605e8d	112	ASN1_SEQUENCE_enc(X509_CRL_INFO, enc, crl_inf_cb) = {
9d6b1ce6 DSH	113	ASN1_OPT(X509_CRL_INFO, version, ASN1_INTEGER),
	114	ASN1_SIMPLE(X509_CRL_INFO, sig_alg, X509_ALGOR),
	115	ASN1_SIMPLE(X509_CRL_INFO, issuer, X509_NAME),
	116	ASN1_SIMPLE(X509_CRL_INFO, lastUpdate, ASN1_TIME),
	117	ASN1_OPT(X509_CRL_INFO, nextUpdate, ASN1_TIME),
	118	ASN1_SEQUENCE_OF_OPT(X509_CRL_INFO, revoked, X509_REVOKED),
	119	ASN1_EXP_SEQUENCE_OF_OPT(X509_CRL_INFO, extensions, X509_EXTENSION, 0)
2f605e8d	120	} ASN1_SEQUENCE_END_enc(X509_CRL_INFO, X509_CRL_INFO)
9d6b1ce6	121
d0fff69d DSH	122	/* Set CRL entry issuer according to CRL certificate issuer extension.
	123	* Check for unhandled critical CRL entry extensions.
	124	*/
	125
	126	static int crl_set_issuers(X509_CRL *crl)
	127	{
	128
	129	int i, j;
	130	GENERAL_NAMES gens, gtmp;
	131	STACK_OF(X509_REVOKED) *revoked;
	132
	133	revoked = X509_CRL_get_REVOKED(crl);
	134
	135	gens = NULL;
	136	for (i = 0; i < sk_X509_REVOKED_num(revoked); i++)
	137	{
	138	X509_REVOKED *rev = sk_X509_REVOKED_value(revoked, i);
	139	STACK_OF(X509_EXTENSION) *exts;
d43c4497	140	ASN1_ENUMERATED *reason;
d0fff69d DSH	141	X509_EXTENSION *ext;
	142	gtmp = X509_REVOKED_get_ext_d2i(rev,
	143	NID_certificate_issuer,
	144	&j, NULL);
	145	if (!gtmp && (j != -1))
	146	{
	147	crl->flags \|= EXFLAG_INVALID;
	148	return 1;
	149	}
	150
	151	if (gtmp)
	152	{
	153	gens = gtmp;
	154	if (!crl->issuers)
	155	{
	156	crl->issuers = sk_GENERAL_NAMES_new_null();
	157	if (!crl->issuers)
	158	return 0;
	159	}
	160	if (!sk_GENERAL_NAMES_push(crl->issuers, gtmp))
	161	return 0;
	162	}
	163	rev->issuer = gens;
	164
d43c4497 DSH	165	reason = X509_REVOKED_get_ext_d2i(rev, NID_crl_reason,
	166	&j, NULL);
	167	if (!reason && (j != -1))
	168	{
	169	crl->flags \|= EXFLAG_INVALID;
	170	return 1;
	171	}
	172
	173	if (reason)
	174	{
	175	rev->reason = ASN1_ENUMERATED_get(reason);
	176	ASN1_ENUMERATED_free(reason);
	177	}
	178	else
	179	rev->reason = CRL_REASON_NONE;
	180
d0fff69d DSH	181	/* Check for critical CRL entry extensions */
	182
	183	exts = rev->extensions;
	184
	185	for (j = 0; j < sk_X509_EXTENSION_num(exts); j++)
	186	{
	187	ext = sk_X509_EXTENSION_value(exts, j);
	188	if (ext->critical > 0)
	189	{
	190	if (OBJ_obj2nid(ext->object) ==
	191	NID_certificate_issuer)
	192	continue;
	193	crl->flags \|= EXFLAG_CRITICAL;
	194	break;
	195	}
	196	}
	197
	198
	199	}
	200
	201	return 1;
	202
	203	}
	204
edc54021 DSH	205	/* The X509_CRL structure needs a bit of customisation. Cache some extensions
	206	* and hash of the whole CRL.
	207	*/
	208	static int crl_cb(int operation, ASN1_VALUE *pval, const ASN1_ITEM it,
	209	void *exarg)
	210	{
	211	X509_CRL crl = (X509_CRL )*pval;
010fa0b3 DSH	212	STACK_OF(X509_EXTENSION) *exts;
	213	X509_EXTENSION *ext;
	214	int idx;
edc54021 DSH	215
	216	switch(operation)
	217	{
	218	case ASN1_OP_NEW_POST:
	219	crl->idp = NULL;
	220	crl->akid = NULL;
4d50a2b4 DSH	221	crl->flags = 0;
4d50a2b4 DSH	222	crl->idp_flags = 0;
4b96839f	223	crl->idp_reasons = CRLDP_ALL_REASONS;
f4c630ab DSH	224	crl->meth = default_crl_method;
f4c630ab DSH	225	crl->meth_data = NULL;
d0fff69d	226	crl->issuers = NULL;
d43c4497 DSH	227	crl->crl_number = NULL;
d43c4497 DSH	228	crl->base_crl_number = NULL;
edc54021 DSH	229	break;
	230
	231	case ASN1_OP_D2I_POST:
	232	#ifndef OPENSSL_NO_SHA
	233	X509_CRL_digest(crl, EVP_sha1(), crl->sha1_hash, NULL);
	234	#endif
	235	crl->idp = X509_CRL_get_ext_d2i(crl,
	236	NID_issuing_distribution_point, NULL, NULL);
4d50a2b4 DSH	237	if (crl->idp)
	238	setup_idp(crl, crl->idp);
	239
edc54021 DSH	240	crl->akid = X509_CRL_get_ext_d2i(crl,
edc54021 DSH	241	NID_authority_key_identifier, NULL, NULL);
010fa0b3	242
d43c4497 DSH	243	crl->crl_number = X509_CRL_get_ext_d2i(crl,
	244	NID_crl_number, NULL, NULL);
	245
	246	crl->base_crl_number = X509_CRL_get_ext_d2i(crl,
	247	NID_delta_crl, NULL, NULL);
	248	/* Delta CRLs must have CRL number */
	249	if (crl->base_crl_number && !crl->crl_number)
	250	crl->flags \|= EXFLAG_INVALID;
	251
010fa0b3 DSH	252	/* See if we have any unhandled critical CRL extensions and
	253	* indicate this in a flag. We only currently handle IDP so
	254	* anything else critical sets the flag.
	255	*
	256	* This code accesses the X509_CRL structure directly:
	257	* applications shouldn't do this.
	258	*/
	259
	260	exts = crl->crl->extensions;
	261
	262	for (idx = 0; idx < sk_X509_EXTENSION_num(exts); idx++)
	263	{
d43c4497	264	int nid;
010fa0b3	265	ext = sk_X509_EXTENSION_value(exts, idx);
d43c4497 DSH	266	nid = OBJ_obj2nid(ext->object);
	267	if (nid == NID_freshest_crl)
	268	crl->flags \|= EXFLAG_FRESHEST;
010fa0b3 DSH	269	if (ext->critical > 0)
010fa0b3 DSH	270	{
d43c4497 DSH	271	/* We handle IDP and deltas */
d43c4497 DSH	272	if ((nid == NID_issuing_distribution_point)
11da66f8	273	\|\| (nid == NID_authority_key_identifier)
d43c4497 DSH	274	\|\| (nid == NID_delta_crl))
d43c4497 DSH	275	break;;
010fa0b3 DSH	276	crl->flags \|= EXFLAG_CRITICAL;
	277	break;
	278	}
	279	}
d0fff69d DSH	280
	281
	282	if (!crl_set_issuers(crl))
	283	return 0;
	284
f4c630ab DSH	285	if (crl->meth->crl_init)
	286	{
	287	if (crl->meth->crl_init(crl) == 0)
	288	return 0;
	289	}
edc54021 DSH	290	break;
	291
	292	case ASN1_OP_FREE_POST:
f4c630ab DSH	293	if (crl->meth->crl_free)
	294	{
	295	if (!crl->meth->crl_free(crl))
	296	return 0;
	297	}
edc54021 DSH	298	if (crl->akid)
	299	AUTHORITY_KEYID_free(crl->akid);
	300	if (crl->idp)
	301	ISSUING_DIST_POINT_free(crl->idp);
d43c4497 DSH	302	ASN1_INTEGER_free(crl->crl_number);
d43c4497 DSH	303	ASN1_INTEGER_free(crl->base_crl_number);
d0fff69d	304	sk_GENERAL_NAMES_pop_free(crl->issuers, GENERAL_NAMES_free);
edc54021 DSH	305	break;
	306	}
	307	return 1;
	308	}
	309
4d50a2b4 DSH	310	/* Convert IDP into a more convenient form */
	311
	312	static void setup_idp(X509_CRL crl, ISSUING_DIST_POINT idp)
	313	{
	314	int idp_only = 0;
	315	/* Set various flags according to IDP */
	316	crl->idp_flags \|= IDP_PRESENT;
	317	if (idp->onlyuser > 0)
	318	{
	319	idp_only++;
	320	crl->idp_flags \|= IDP_ONLYUSER;
	321	}
	322	if (idp->onlyCA > 0)
	323	{
	324	idp_only++;
	325	crl->idp_flags \|= IDP_ONLYCA;
	326	}
	327	if (idp->onlyattr > 0)
	328	{
	329	idp_only++;
	330	crl->idp_flags \|= IDP_ONLYATTR;
	331	}
	332
	333	if (idp_only > 1)
	334	crl->idp_flags \|= IDP_INVALID;
	335
	336	if (idp->indirectCRL > 0)
	337	crl->idp_flags \|= IDP_INDIRECT;
	338
	339	if (idp->onlysomereasons)
	340	{
	341	crl->idp_flags \|= IDP_REASONS;
	342	if (idp->onlysomereasons->length > 0)
	343	crl->idp_reasons = idp->onlysomereasons->data[0];
	344	if (idp->onlysomereasons->length > 1)
	345	crl->idp_reasons \|=
	346	(idp->onlysomereasons->data[1] << 8);
4b96839f	347	crl->idp_reasons &= CRLDP_ALL_REASONS;
4d50a2b4	348	}
3e727a3b DSH	349
3e727a3b DSH	350	DIST_POINT_set_dpname(idp->distpoint, X509_CRL_get_issuer(crl));
4d50a2b4 DSH	351	}
4d50a2b4 DSH	352
edc54021	353	ASN1_SEQUENCE_ref(X509_CRL, crl_cb, CRYPTO_LOCK_X509_CRL) = {
9d6b1ce6 DSH	354	ASN1_SIMPLE(X509_CRL, crl, X509_CRL_INFO),
	355	ASN1_SIMPLE(X509_CRL, sig_alg, X509_ALGOR),
	356	ASN1_SIMPLE(X509_CRL, signature, ASN1_BIT_STRING)
d339187b	357	} ASN1_SEQUENCE_END_ref(X509_CRL, X509_CRL)
9d6b1ce6 DSH	358
9d6b1ce6 DSH	359	IMPLEMENT_ASN1_FUNCTIONS(X509_REVOKED)
2e8cb108	360	IMPLEMENT_ASN1_DUP_FUNCTION(X509_REVOKED)
9d6b1ce6 DSH	361	IMPLEMENT_ASN1_FUNCTIONS(X509_CRL_INFO)
9d6b1ce6 DSH	362	IMPLEMENT_ASN1_FUNCTIONS(X509_CRL)
1241126a	363	IMPLEMENT_ASN1_DUP_FUNCTION(X509_CRL)
d02b48c6	364
ccd86b68 GT	365	static int X509_REVOKED_cmp(const X509_REVOKED * const *a,
ccd86b68 GT	366	const X509_REVOKED * const *b)
d02b48c6 RE	367	{
	368	return(ASN1_STRING_cmp(
	369	(ASN1_STRING )(a)->serialNumber,
	370	(ASN1_STRING )(b)->serialNumber));
	371	}
	372
9d6b1ce6 DSH	373	int X509_CRL_add0_revoked(X509_CRL crl, X509_REVOKED rev)
	374	{
	375	X509_CRL_INFO *inf;
	376	inf = crl->crl;
	377	if(!inf->revoked)
	378	inf->revoked = sk_X509_REVOKED_new(X509_REVOKED_cmp);
	379	if(!inf->revoked \|\| !sk_X509_REVOKED_push(inf->revoked, rev)) {
	380	ASN1err(ASN1_F_X509_CRL_ADD0_REVOKED, ERR_R_MALLOC_FAILURE);
	381	return 0;
	382	}
c162b132	383	inf->enc.modified = 1;
9d6b1ce6 DSH	384	return 1;
	385	}
	386
010fa0b3 DSH	387	int X509_CRL_verify(X509_CRL crl, EVP_PKEY r)
010fa0b3 DSH	388	{
f4c630ab	389	if (crl->meth->crl_verify)
010fa0b3	390	return crl->meth->crl_verify(crl, r);
f4c630ab DSH	391	return 0;
	392	}
	393
	394	int X509_CRL_get0_by_serial(X509_CRL *crl,
	395	X509_REVOKED *ret, ASN1_INTEGER serial)
	396	{
	397	if (crl->meth->crl_lookup)
d0fff69d DSH	398	return crl->meth->crl_lookup(crl, ret, serial, NULL);
	399	return 0;
	400	}
	401
	402	int X509_CRL_get0_by_cert(X509_CRL crl, X509_REVOKED ret, X509 x)
	403	{
	404	if (crl->meth->crl_lookup)
	405	return crl->meth->crl_lookup(crl, ret,
	406	X509_get_serialNumber(x),
	407	X509_get_issuer_name(x));
f4c630ab DSH	408	return 0;
	409	}
	410
	411	static int def_crl_verify(X509_CRL crl, EVP_PKEY r)
	412	{
010fa0b3 DSH	413	return(ASN1_item_verify(ASN1_ITEM_rptr(X509_CRL_INFO),
	414	crl->sig_alg, crl->signature,crl->crl,r));
	415	}
	416
d0fff69d DSH	417	static int crl_revoked_issuer_match(X509_CRL crl, X509_NAME nm,
	418	X509_REVOKED *rev)
	419	{
	420	int i;
	421
	422	if (!rev->issuer)
	423	{
	424	if (!nm)
	425	return 1;
	426	if (!X509_NAME_cmp(nm, X509_CRL_get_issuer(crl)))
	427	return 1;
	428	return 0;
	429	}
	430
	431	if (!nm)
	432	nm = X509_CRL_get_issuer(crl);
	433
	434	for (i = 0; i < sk_GENERAL_NAME_num(rev->issuer); i++)
	435	{
	436	GENERAL_NAME *gen = sk_GENERAL_NAME_value(rev->issuer, i);
	437	if (gen->type != GEN_DIRNAME)
	438	continue;
	439	if (!X509_NAME_cmp(nm, gen->d.directoryName))
	440	return 1;
	441	}
	442	return 0;
	443
	444	}
	445
f4c630ab	446	static int def_crl_lookup(X509_CRL *crl,
d0fff69d	447	X509_REVOKED *ret, ASN1_INTEGER serial, X509_NAME *issuer)
010fa0b3	448	{
d0fff69d	449	X509_REVOKED rtmp, *rev;
010fa0b3	450	int idx;
010fa0b3 DSH	451	rtmp.serialNumber = serial;
	452	/* Sort revoked into serial number order if not already sorted.
	453	* Do this under a lock to avoid race condition.
	454	*/
	455	if (!sk_X509_REVOKED_is_sorted(crl->crl->revoked))
	456	{
	457	CRYPTO_w_lock(CRYPTO_LOCK_X509_CRL);
	458	sk_X509_REVOKED_sort(crl->crl->revoked);
	459	CRYPTO_w_unlock(CRYPTO_LOCK_X509_CRL);
	460	}
	461	idx = sk_X509_REVOKED_find(crl->crl->revoked, &rtmp);
d0fff69d DSH	462	if(idx < 0)
	463	return 0;
	464	/* Need to look for matching name */
	465	for(;idx < sk_X509_REVOKED_num(crl->crl->revoked); idx++)
010fa0b3	466	{
d0fff69d DSH	467	rev = sk_X509_REVOKED_value(crl->crl->revoked, idx);
	468	if (ASN1_INTEGER_cmp(rev->serialNumber, serial))
	469	return 0;
	470	if (crl_revoked_issuer_match(crl, issuer, rev))
	471	{
	472	if (ret)
	473	*ret = rev;
d43c4497 DSH	474	if (rev->reason == CRL_REASON_REMOVE_FROM_CRL)
d43c4497 DSH	475	return 2;
d0fff69d DSH	476	return 1;
d0fff69d DSH	477	}
010fa0b3 DSH	478	}
	479	return 0;
	480	}
	481
f4c630ab DSH	482	void X509_CRL_set_default_method(const X509_CRL_METHOD *meth)
	483	{
	484	if (meth == NULL)
	485	default_crl_method = &int_crl_meth;
	486	else
	487	default_crl_method = meth;
	488	}
	489
	490	X509_CRL_METHOD *X509_CRL_METHOD_new(
	491	int (crl_init)(X509_CRL crl),
	492	int (crl_free)(X509_CRL crl),
d0fff69d DSH	493	int (crl_lookup)(X509_CRL crl, X509_REVOKED **ret,
d0fff69d DSH	494	ASN1_INTEGER ser, X509_NAME issuer),
f4c630ab DSH	495	int (crl_verify)(X509_CRL crl, EVP_PKEY *pk))
	496	{
	497	X509_CRL_METHOD *m;
	498	m = OPENSSL_malloc(sizeof(X509_CRL_METHOD));
	499	if (!m)
	500	return NULL;
	501	m->crl_init = crl_init;
	502	m->crl_free = crl_free;
	503	m->crl_lookup = crl_lookup;
	504	m->crl_verify = crl_verify;
	505	m->flags = X509_CRL_METHOD_DYNAMIC;
	506	return m;
	507	}
	508
	509	void X509_CRL_METHOD_free(X509_CRL_METHOD *m)
	510	{
	511	if (!(m->flags & X509_CRL_METHOD_DYNAMIC))
	512	return;
	513	OPENSSL_free(m);
	514	}
	515
	516	void X509_CRL_set_meth_data(X509_CRL crl, void dat)
	517	{
	518	crl->meth_data = dat;
	519	}
	520
	521	void X509_CRL_get_meth_data(X509_CRL crl)
	522	{
	523	return crl->meth_data;
	524	}
	525
ee8ba0b2 BL	526	IMPLEMENT_STACK_OF(X509_REVOKED)
ee8ba0b2 BL	527	IMPLEMENT_ASN1_SET_OF(X509_REVOKED)
a1195a19 BL	528	IMPLEMENT_STACK_OF(X509_CRL)
a1195a19 BL	529	IMPLEMENT_ASN1_SET_OF(X509_CRL)