[thirdparty/openssl.git] / crypto / x509v3 / v3_conf.c

/* v3_conf.c */
/* Written by Dr Stephen N Henson (shenson@bigfoot.com) for the OpenSSL
 * project 1999.
 */
/* ====================================================================
 * Copyright (c) 1999-2002 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).
 *
 */
/* extension creation utilities */


#include <stdio.h>
#include <ctype.h>
#include "cryptlib.h"
#include <openssl/conf.h>
#include <openssl/x509.h>
#include <openssl/x509v3.h>

static int v3_check_critical(char **value);
static int v3_check_generic(char **value);
static X509_EXTENSION *do_ext_nconf(CONF *conf, X509V3_CTX *ctx, int ext_nid, int crit, char *value);
static X509_EXTENSION *v3_generic_extension(const char *ext, char *value, int crit, int type, X509V3_CTX *ctx);
static char *conf_lhash_get_string(void *db, char *section, char *value);
static STACK_OF(CONF_VALUE) *conf_lhash_get_section(void *db, char *section);
static X509_EXTENSION *do_ext_i2d(const X509V3_EXT_METHOD *method, int ext_nid,
				  int crit, void *ext_struc);
static unsigned char *generic_asn1(char *value, X509V3_CTX *ctx, long *ext_len);
/* CONF *conf:  Config file    */
/* char *name:  Name    */
/* char *value:  Value    */
X509_EXTENSION *X509V3_EXT_nconf(CONF *conf, X509V3_CTX *ctx, char *name,
				 char *value)
	{
	int crit;
	int ext_type;
	X509_EXTENSION *ret;
	crit = v3_check_critical(&value);
	if ((ext_type = v3_check_generic(&value))) 
		return v3_generic_extension(name, value, crit, ext_type, ctx);
	ret = do_ext_nconf(conf, ctx, OBJ_sn2nid(name), crit, value);
	if (!ret)
		{
		X509V3err(X509V3_F_X509V3_EXT_NCONF,X509V3_R_ERROR_IN_EXTENSION);
		ERR_add_error_data(4,"name=", name, ", value=", value);
		}
	return ret;
	}

/* CONF *conf:  Config file    */
/* char *value:  Value    */
X509_EXTENSION *X509V3_EXT_nconf_nid(CONF *conf, X509V3_CTX *ctx, int ext_nid,
				     char *value)
	{
	int crit;
	int ext_type;
	crit = v3_check_critical(&value);
	if ((ext_type = v3_check_generic(&value))) 
		return v3_generic_extension(OBJ_nid2sn(ext_nid),
						 value, crit, ext_type, ctx);
	return do_ext_nconf(conf, ctx, ext_nid, crit, value);
	}

/* CONF *conf:  Config file    */
/* char *value:  Value    */
static X509_EXTENSION *do_ext_nconf(CONF *conf, X509V3_CTX *ctx, int ext_nid,
				    int crit, char *value)
	{
	const X509V3_EXT_METHOD *method;
	X509_EXTENSION *ext;
	STACK_OF(CONF_VALUE) *nval;
	void *ext_struc;
	if (ext_nid == NID_undef)
		{
		X509V3err(X509V3_F_DO_EXT_NCONF,X509V3_R_UNKNOWN_EXTENSION_NAME);
		return NULL;
		}
	if (!(method = X509V3_EXT_get_nid(ext_nid)))
		{
		X509V3err(X509V3_F_DO_EXT_NCONF,X509V3_R_UNKNOWN_EXTENSION);
		return NULL;
		}
	/* Now get internal extension representation based on type */
	if (method->v2i)
		{
		if(*value == '@') nval = NCONF_get_section(conf, value + 1);
		else nval = X509V3_parse_list(value);
		if(sk_CONF_VALUE_num(nval) <= 0)
			{
			X509V3err(X509V3_F_DO_EXT_NCONF,X509V3_R_INVALID_EXTENSION_STRING);
			ERR_add_error_data(4, "name=", OBJ_nid2sn(ext_nid), ",section=", value);
			return NULL;
			}
		ext_struc = method->v2i(method, ctx, nval);
		if(*value != '@') sk_CONF_VALUE_pop_free(nval,
							 X509V3_conf_free);
		if(!ext_struc) return NULL;
		}
	else if(method->s2i)
		{
		if(!(ext_struc = method->s2i(method, ctx, value))) return NULL;
		}
	else if(method->r2i)
		{
		if(!ctx->db || !ctx->db_meth)
			{
			X509V3err(X509V3_F_DO_EXT_NCONF,X509V3_R_NO_CONFIG_DATABASE);
			return NULL;
			}
		if(!(ext_struc = method->r2i(method, ctx, value))) return NULL;
		}
	else
		{
		X509V3err(X509V3_F_DO_EXT_NCONF,X509V3_R_EXTENSION_SETTING_NOT_SUPPORTED);
		ERR_add_error_data(2, "name=", OBJ_nid2sn(ext_nid));
		return NULL;
		}

	ext  = do_ext_i2d(method, ext_nid, crit, ext_struc);
	if(method->it) ASN1_item_free(ext_struc, ASN1_ITEM_ptr(method->it));
	else method->ext_free(ext_struc);
	return ext;

	}

static X509_EXTENSION *do_ext_i2d(const X509V3_EXT_METHOD *method, int ext_nid,
				  int crit, void *ext_struc)
	{
	unsigned char *ext_der;
	int ext_len;
	ASN1_OCTET_STRING *ext_oct;
	X509_EXTENSION *ext;
	/* Convert internal representation to DER */
	if (method->it)
		{
		ext_der = NULL;
		ext_len = ASN1_item_i2d(ext_struc, &ext_der, ASN1_ITEM_ptr(method->it));
		if (ext_len < 0) goto merr;
		}
	 else
		{
		unsigned char *p;
		ext_len = method->i2d(ext_struc, NULL);
		if(!(ext_der = OPENSSL_malloc(ext_len))) goto merr;
		p = ext_der;
		method->i2d(ext_struc, &p);
		}
	if (!(ext_oct = M_ASN1_OCTET_STRING_new())) goto merr;
	ext_oct->data = ext_der;
	ext_oct->length = ext_len;

	ext = X509_EXTENSION_create_by_NID(NULL, ext_nid, crit, ext_oct);
	if (!ext) goto merr;
	M_ASN1_OCTET_STRING_free(ext_oct);

	return ext;

	merr:
	X509V3err(X509V3_F_DO_EXT_I2D,ERR_R_MALLOC_FAILURE);
	return NULL;

	}

/* Given an internal structure, nid and critical flag create an extension */

X509_EXTENSION *X509V3_EXT_i2d(int ext_nid, int crit, void *ext_struc)
	{
	const X509V3_EXT_METHOD *method;
	if (!(method = X509V3_EXT_get_nid(ext_nid))) {
		X509V3err(X509V3_F_X509V3_EXT_I2D,X509V3_R_UNKNOWN_EXTENSION);
		return NULL;
	}
	return do_ext_i2d(method, ext_nid, crit, ext_struc);
}

/* Check the extension string for critical flag */
static int v3_check_critical(char **value)
{
	char *p = *value;
	if ((strlen(p) < 9) || strncmp(p, "critical,", 9)) return 0;
	p+=9;
	while(isspace((unsigned char)*p)) p++;
	*value = p;
	return 1;
}

/* Check extension string for generic extension and return the type */
static int v3_check_generic(char **value)
{
	int gen_type = 0;
	char *p = *value;
	if ((strlen(p) >= 4) && !strncmp(p, "DER:", 4))
		{
		p+=4;
		gen_type = 1;
		}
	else if ((strlen(p) >= 5) && !strncmp(p, "ASN1:", 5))
		{
		p+=5;
		gen_type = 2;
		}
	else
		return 0;

	while (isspace((unsigned char)*p)) p++;
	*value = p;
	return gen_type;
}

/* Create a generic extension: for now just handle DER type */
static X509_EXTENSION *v3_generic_extension(const char *ext, char *value,
					    int crit, int gen_type,
					    X509V3_CTX *ctx)
	{
	unsigned char *ext_der=NULL;
	long ext_len;
	ASN1_OBJECT *obj=NULL;
	ASN1_OCTET_STRING *oct=NULL;
	X509_EXTENSION *extension=NULL;
	if (!(obj = OBJ_txt2obj(ext, 0)))
		{
		X509V3err(X509V3_F_V3_GENERIC_EXTENSION,X509V3_R_EXTENSION_NAME_ERROR);
		ERR_add_error_data(2, "name=", ext);
		goto err;
		}

	if (gen_type == 1)
		ext_der = string_to_hex(value, &ext_len);
	else if (gen_type == 2)
		ext_der = generic_asn1(value, ctx, &ext_len);

	if (ext_der == NULL)
		{
		X509V3err(X509V3_F_V3_GENERIC_EXTENSION,X509V3_R_EXTENSION_VALUE_ERROR);
		ERR_add_error_data(2, "value=", value);
		goto err;
		}

	if (!(oct = M_ASN1_OCTET_STRING_new()))
		{
		X509V3err(X509V3_F_V3_GENERIC_EXTENSION,ERR_R_MALLOC_FAILURE);
		goto err;
		}

	oct->data = ext_der;
	oct->length = ext_len;
	ext_der = NULL;

	extension = X509_EXTENSION_create_by_OBJ(NULL, obj, crit, oct);

	err:
	ASN1_OBJECT_free(obj);
	M_ASN1_OCTET_STRING_free(oct);
	if(ext_der) OPENSSL_free(ext_der);
	return extension;

	}

static unsigned char *generic_asn1(char *value, X509V3_CTX *ctx, long *ext_len)
	{
	ASN1_TYPE *typ;
	unsigned char *ext_der = NULL;
	typ = ASN1_generate_v3(value, ctx);
	if (typ == NULL)
		return NULL;
	*ext_len = i2d_ASN1_TYPE(typ, &ext_der);
	ASN1_TYPE_free(typ);
	return ext_der;
	}

/* This is the main function: add a bunch of extensions based on a config file
 * section to an extension STACK.
 */


int X509V3_EXT_add_nconf_sk(CONF *conf, X509V3_CTX *ctx, char *section,
			    STACK_OF(X509_EXTENSION) **sk)
	{
	X509_EXTENSION *ext;
	STACK_OF(CONF_VALUE) *nval;
	CONF_VALUE *val;	
	int i;
	if (!(nval = NCONF_get_section(conf, section))) return 0;
	for (i = 0; i < sk_CONF_VALUE_num(nval); i++)
		{
		val = sk_CONF_VALUE_value(nval, i);
		if (!(ext = X509V3_EXT_nconf(conf, ctx, val->name, val->value)))
								return 0;
		if (sk) X509v3_add_ext(sk, ext, -1);
		X509_EXTENSION_free(ext);
		}
	return 1;
	}

/* Convenience functions to add extensions to a certificate, CRL and request */

int X509V3_EXT_add_nconf(CONF *conf, X509V3_CTX *ctx, char *section,
			 X509 *cert)
	{
	STACK_OF(X509_EXTENSION) **sk = NULL;
	if (cert)
		sk = &cert->cert_info->extensions;
	return X509V3_EXT_add_nconf_sk(conf, ctx, section, sk);
	}

/* Same as above but for a CRL */

int X509V3_EXT_CRL_add_nconf(CONF *conf, X509V3_CTX *ctx, char *section,
			     X509_CRL *crl)
	{
	STACK_OF(X509_EXTENSION) **sk = NULL;
	if (crl)
		sk = &crl->crl->extensions;
	return X509V3_EXT_add_nconf_sk(conf, ctx, section, sk);
	}

/* Add extensions to certificate request */

int X509V3_EXT_REQ_add_nconf(CONF *conf, X509V3_CTX *ctx, char *section,
	     X509_REQ *req)
	{
	STACK_OF(X509_EXTENSION) *extlist = NULL, **sk = NULL;
	int i;
	if (req)
		sk = &extlist;
	i = X509V3_EXT_add_nconf_sk(conf, ctx, section, sk);
	if (!i || !sk)
		return i;
	i = X509_REQ_add_extensions(req, extlist);
	sk_X509_EXTENSION_pop_free(extlist, X509_EXTENSION_free);
	return i;
	}

/* Config database functions */

char * X509V3_get_string(X509V3_CTX *ctx, char *name, char *section)
	{
	if(!ctx->db || !ctx->db_meth || !ctx->db_meth->get_string)
		{
		X509V3err(X509V3_F_X509V3_GET_STRING,X509V3_R_OPERATION_NOT_DEFINED);
		return NULL;
		}
	if (ctx->db_meth->get_string)
			return ctx->db_meth->get_string(ctx->db, name, section);
	return NULL;
	}

STACK_OF(CONF_VALUE) * X509V3_get_section(X509V3_CTX *ctx, char *section)
	{
	if(!ctx->db || !ctx->db_meth || !ctx->db_meth->get_section)
		{
		X509V3err(X509V3_F_X509V3_GET_SECTION,X509V3_R_OPERATION_NOT_DEFINED);
		return NULL;
		}
	if (ctx->db_meth->get_section)
			return ctx->db_meth->get_section(ctx->db, section);
	return NULL;
	}

void X509V3_string_free(X509V3_CTX *ctx, char *str)
	{
	if (!str) return;
	if (ctx->db_meth->free_string)
			ctx->db_meth->free_string(ctx->db, str);
	}

void X509V3_section_free(X509V3_CTX *ctx, STACK_OF(CONF_VALUE) *section)
	{
	if (!section) return;
	if (ctx->db_meth->free_section)
			ctx->db_meth->free_section(ctx->db, section);
	}

static char *nconf_get_string(void *db, char *section, char *value)
	{
	return NCONF_get_string(db, section, value);
	}

static STACK_OF(CONF_VALUE) *nconf_get_section(void *db, char *section)
	{
	return NCONF_get_section(db, section);
	}

static X509V3_CONF_METHOD nconf_method = {
nconf_get_string,
nconf_get_section,
NULL,
NULL
};

void X509V3_set_nconf(X509V3_CTX *ctx, CONF *conf)
	{
	ctx->db_meth = &nconf_method;
	ctx->db = conf;
	}

void X509V3_set_ctx(X509V3_CTX *ctx, X509 *issuer, X509 *subj, X509_REQ *req,
		    X509_CRL *crl, int flags)
	{
	ctx->issuer_cert = issuer;
	ctx->subject_cert = subj;
	ctx->crl = crl;
	ctx->subject_req = req;
	ctx->flags = flags;
	}

/* Old conf compatibility functions */

X509_EXTENSION *X509V3_EXT_conf(LHASH_OF(CONF_VALUE) *conf, X509V3_CTX *ctx,
				char *name, char *value)
	{
	CONF ctmp;
	CONF_set_nconf(&ctmp, conf);
	return X509V3_EXT_nconf(&ctmp, ctx, name, value);
	}

/* LHASH *conf:  Config file    */
/* char *value:  Value    */
X509_EXTENSION *X509V3_EXT_conf_nid(LHASH_OF(CONF_VALUE) *conf, X509V3_CTX *ctx,
				    int ext_nid, char *value)
	{
	CONF ctmp;
	CONF_set_nconf(&ctmp, conf);
	return X509V3_EXT_nconf_nid(&ctmp, ctx, ext_nid, value);
	}

static char *conf_lhash_get_string(void *db, char *section, char *value)
	{
	return CONF_get_string(db, section, value);
	}

static STACK_OF(CONF_VALUE) *conf_lhash_get_section(void *db, char *section)
	{
	return CONF_get_section(db, section);
	}

static X509V3_CONF_METHOD conf_lhash_method = {
conf_lhash_get_string,
conf_lhash_get_section,
NULL,
NULL
};

void X509V3_set_conf_lhash(X509V3_CTX *ctx, LHASH_OF(CONF_VALUE) *lhash)
	{
	ctx->db_meth = &conf_lhash_method;
	ctx->db = lhash;
	}

int X509V3_EXT_add_conf(LHASH_OF(CONF_VALUE) *conf, X509V3_CTX *ctx,
			char *section, X509 *cert)
	{
	CONF ctmp;
	CONF_set_nconf(&ctmp, conf);
	return X509V3_EXT_add_nconf(&ctmp, ctx, section, cert);
	}

/* Same as above but for a CRL */

int X509V3_EXT_CRL_add_conf(LHASH_OF(CONF_VALUE) *conf, X509V3_CTX *ctx,
			    char *section, X509_CRL *crl)
	{
	CONF ctmp;
	CONF_set_nconf(&ctmp, conf);
	return X509V3_EXT_CRL_add_nconf(&ctmp, ctx, section, crl);
	}

/* Add extensions to certificate request */

int X509V3_EXT_REQ_add_conf(LHASH_OF(CONF_VALUE) *conf, X509V3_CTX *ctx,
			    char *section, X509_REQ *req)
	{
	CONF ctmp;
	CONF_set_nconf(&ctmp, conf);
	return X509V3_EXT_REQ_add_nconf(&ctmp, ctx, section, req);
	}
Commit	Line	Data
9aeaf1b4 DSH	1	/* v3_conf.c */
	2	/* Written by Dr Stephen N Henson (shenson@bigfoot.com) for the OpenSSL
	3	* project 1999.
	4	*/
	5	/* ====================================================================
9ea1b878	6	* Copyright (c) 1999-2002 The OpenSSL Project. All rights reserved.
9aeaf1b4 DSH	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	*/
388ff0b0	58	/* extension creation utilities */
9aeaf1b4	59
e527ba09 DSH	60
	61
	62	#include <stdio.h>
9aeaf1b4	63	#include <ctype.h>
e527ba09	64	#include "cryptlib.h"
ec577822 BM	65	#include <openssl/conf.h>
	66	#include <openssl/x509.h>
	67	#include <openssl/x509v3.h>
9aeaf1b4	68
388ff0b0 DSH	69	static int v3_check_critical(char **value);
388ff0b0 DSH	70	static int v3_check_generic(char **value);
b7a26e6d	71	static X509_EXTENSION do_ext_nconf(CONF conf, X509V3_CTX ctx, int ext_nid, int crit, char value);
9ea1b878	72	static X509_EXTENSION v3_generic_extension(const char ext, char value, int crit, int type, X509V3_CTX ctx);
f5fedc04	73	static char conf_lhash_get_string(void db, char section, char value);
ba404b5e	74	static STACK_OF(CONF_VALUE) conf_lhash_get_section(void db, char *section);
babb3798 BL	75	static X509_EXTENSION do_ext_i2d(const X509V3_EXT_METHOD method, int ext_nid,
babb3798 BL	76	int crit, void *ext_struc);
9ea1b878	77	static unsigned char generic_asn1(char value, X509V3_CTX ctx, long ext_len);
b7a26e6d	78	/* CONF conf: Config file /
6b691a5c UM	79	/* char name: Name /
6b691a5c UM	80	/* char value: Value /
b7a26e6d	81	X509_EXTENSION X509V3_EXT_nconf(CONF conf, X509V3_CTX ctx, char name,
3c1d6bbc	82	char *value)
b7a26e6d	83	{
388ff0b0 DSH	84	int crit;
388ff0b0 DSH	85	int ext_type;
aa066b9e	86	X509_EXTENSION *ret;
388ff0b0	87	crit = v3_check_critical(&value);
b7a26e6d	88	if ((ext_type = v3_check_generic(&value)))
9ea1b878	89	return v3_generic_extension(name, value, crit, ext_type, ctx);
b7a26e6d DSH	90	ret = do_ext_nconf(conf, ctx, OBJ_sn2nid(name), crit, value);
	91	if (!ret)
	92	{
8afca8d9	93	X509V3err(X509V3_F_X509V3_EXT_NCONF,X509V3_R_ERROR_IN_EXTENSION);
aa066b9e	94	ERR_add_error_data(4,"name=", name, ", value=", value);
b7a26e6d	95	}
aa066b9e	96	return ret;
b7a26e6d	97	}
9aeaf1b4	98
b7a26e6d	99	/* CONF conf: Config file /
6b691a5c	100	/* char value: Value /
b7a26e6d	101	X509_EXTENSION X509V3_EXT_nconf_nid(CONF conf, X509V3_CTX *ctx, int ext_nid,
3c1d6bbc	102	char *value)
b7a26e6d	103	{
388ff0b0 DSH	104	int crit;
	105	int ext_type;
	106	crit = v3_check_critical(&value);
b7a26e6d	107	if ((ext_type = v3_check_generic(&value)))
388ff0b0	108	return v3_generic_extension(OBJ_nid2sn(ext_nid),
9ea1b878	109	value, crit, ext_type, ctx);
b7a26e6d DSH	110	return do_ext_nconf(conf, ctx, ext_nid, crit, value);
b7a26e6d DSH	111	}
388ff0b0	112
b7a26e6d	113	/* CONF conf: Config file /
6b691a5c	114	/* char value: Value /
b7a26e6d	115	static X509_EXTENSION do_ext_nconf(CONF conf, X509V3_CTX *ctx, int ext_nid,
3c1d6bbc	116	int crit, char *value)
b7a26e6d	117	{
babb3798	118	const X509V3_EXT_METHOD *method;
c8b41850	119	X509_EXTENSION *ext;
ba404b5e	120	STACK_OF(CONF_VALUE) *nval;
c8b41850	121	void *ext_struc;
b7a26e6d DSH	122	if (ext_nid == NID_undef)
b7a26e6d DSH	123	{
8afca8d9	124	X509V3err(X509V3_F_DO_EXT_NCONF,X509V3_R_UNKNOWN_EXTENSION_NAME);
aa066b9e	125	return NULL;
b7a26e6d DSH	126	}
	127	if (!(method = X509V3_EXT_get_nid(ext_nid)))
	128	{
8afca8d9	129	X509V3err(X509V3_F_DO_EXT_NCONF,X509V3_R_UNKNOWN_EXTENSION);
9aeaf1b4	130	return NULL;
b7a26e6d	131	}
9aeaf1b4	132	/* Now get internal extension representation based on type */
b7a26e6d DSH	133	if (method->v2i)
	134	{
	135	if(*value == '@') nval = NCONF_get_section(conf, value + 1);
9aeaf1b4	136	else nval = X509V3_parse_list(value);
f80153e2	137	if(sk_CONF_VALUE_num(nval) <= 0)
b7a26e6d	138	{
8afca8d9	139	X509V3err(X509V3_F_DO_EXT_NCONF,X509V3_R_INVALID_EXTENSION_STRING);
9aeaf1b4 DSH	140	ERR_add_error_data(4, "name=", OBJ_nid2sn(ext_nid), ",section=", value);
9aeaf1b4 DSH	141	return NULL;
b7a26e6d	142	}
9aeaf1b4	143	ext_struc = method->v2i(method, ctx, nval);
ba404b5e DSH	144	if(*value != '@') sk_CONF_VALUE_pop_free(nval,
ba404b5e DSH	145	X509V3_conf_free);
9aeaf1b4	146	if(!ext_struc) return NULL;
b7a26e6d DSH	147	}
	148	else if(method->s2i)
	149	{
9aeaf1b4	150	if(!(ext_struc = method->s2i(method, ctx, value))) return NULL;
b7a26e6d DSH	151	}
	152	else if(method->r2i)
	153	{
f0dc08e6	154	if(!ctx->db \|\| !ctx->db_meth)
b7a26e6d	155	{
8afca8d9	156	X509V3err(X509V3_F_DO_EXT_NCONF,X509V3_R_NO_CONFIG_DATABASE);
41b731f2	157	return NULL;
b7a26e6d	158	}
41b731f2	159	if(!(ext_struc = method->r2i(method, ctx, value))) return NULL;
b7a26e6d DSH	160	}
	161	else
	162	{
8afca8d9	163	X509V3err(X509V3_F_DO_EXT_NCONF,X509V3_R_EXTENSION_SETTING_NOT_SUPPORTED);
9aeaf1b4 DSH	164	ERR_add_error_data(2, "name=", OBJ_nid2sn(ext_nid));
9aeaf1b4 DSH	165	return NULL;
b7a26e6d	166	}
9aeaf1b4	167
c8b41850	168	ext = do_ext_i2d(method, ext_nid, crit, ext_struc);
bb5ea36b	169	if(method->it) ASN1_item_free(ext_struc, ASN1_ITEM_ptr(method->it));
2aff7727	170	else method->ext_free(ext_struc);
c8b41850 DSH	171	return ext;
c8b41850 DSH	172
b7a26e6d	173	}
c8b41850	174
babb3798	175	static X509_EXTENSION do_ext_i2d(const X509V3_EXT_METHOD method, int ext_nid,
3c1d6bbc	176	int crit, void *ext_struc)
b7a26e6d	177	{
2aff7727	178	unsigned char *ext_der;
c8b41850 DSH	179	int ext_len;
	180	ASN1_OCTET_STRING *ext_oct;
	181	X509_EXTENSION *ext;
	182	/* Convert internal representation to DER */
b7a26e6d DSH	183	if (method->it)
b7a26e6d DSH	184	{
36ac656a	185	ext_der = NULL;
bb5ea36b	186	ext_len = ASN1_item_i2d(ext_struc, &ext_der, ASN1_ITEM_ptr(method->it));
b7a26e6d DSH	187	if (ext_len < 0) goto merr;
	188	}
	189	else
	190	{
2aff7727 DSH	191	unsigned char *p;
	192	ext_len = method->i2d(ext_struc, NULL);
	193	if(!(ext_der = OPENSSL_malloc(ext_len))) goto merr;
	194	p = ext_der;
	195	method->i2d(ext_struc, &p);
b7a26e6d DSH	196	}
b7a26e6d DSH	197	if (!(ext_oct = M_ASN1_OCTET_STRING_new())) goto merr;
9aeaf1b4 DSH	198	ext_oct->data = ext_der;
9aeaf1b4 DSH	199	ext_oct->length = ext_len;
2aff7727	200
9aeaf1b4	201	ext = X509_EXTENSION_create_by_NID(NULL, ext_nid, crit, ext_oct);
b7a26e6d	202	if (!ext) goto merr;
08e9c1af	203	M_ASN1_OCTET_STRING_free(ext_oct);
9aeaf1b4 DSH	204
	205	return ext;
	206
c8b41850 DSH	207	merr:
	208	X509V3err(X509V3_F_DO_EXT_I2D,ERR_R_MALLOC_FAILURE);
	209	return NULL;
	210
b7a26e6d	211	}
c8b41850 DSH	212
	213	/* Given an internal structure, nid and critical flag create an extension */
	214
	215	X509_EXTENSION X509V3_EXT_i2d(int ext_nid, int crit, void ext_struc)
b7a26e6d	216	{
babb3798	217	const X509V3_EXT_METHOD *method;
b7a26e6d	218	if (!(method = X509V3_EXT_get_nid(ext_nid))) {
c8b41850 DSH	219	X509V3err(X509V3_F_X509V3_EXT_I2D,X509V3_R_UNKNOWN_EXTENSION);
	220	return NULL;
	221	}
	222	return do_ext_i2d(method, ext_nid, crit, ext_struc);
9aeaf1b4 DSH	223	}
9aeaf1b4 DSH	224
388ff0b0	225	/* Check the extension string for critical flag */
6b691a5c	226	static int v3_check_critical(char **value)
388ff0b0 DSH	227	{
388ff0b0 DSH	228	char p = value;
b7a26e6d	229	if ((strlen(p) < 9) \|\| strncmp(p, "critical,", 9)) return 0;
388ff0b0	230	p+=9;
84a370a4	231	while(isspace((unsigned char)*p)) p++;
388ff0b0 DSH	232	*value = p;
	233	return 1;
	234	}
	235
	236	/* Check extension string for generic extension and return the type */
6b691a5c	237	static int v3_check_generic(char **value)
388ff0b0	238	{
9ea1b878	239	int gen_type = 0;
388ff0b0	240	char p = value;
b9d2d200	241	if ((strlen(p) >= 4) && !strncmp(p, "DER:", 4))
9ea1b878 DSH	242	{
	243	p+=4;
	244	gen_type = 1;
	245	}
b9d2d200	246	else if ((strlen(p) >= 5) && !strncmp(p, "ASN1:", 5))
9ea1b878 DSH	247	{
	248	p+=5;
	249	gen_type = 2;
	250	}
	251	else
	252	return 0;
	253
b7a26e6d	254	while (isspace((unsigned char)*p)) p++;
388ff0b0	255	*value = p;
9ea1b878	256	return gen_type;
388ff0b0 DSH	257	}
388ff0b0 DSH	258
c79b16e1	259	/* Create a generic extension: for now just handle DER type */
6b691a5c	260	static X509_EXTENSION v3_generic_extension(const char ext, char *value,
3c1d6bbc BL	261	int crit, int gen_type,
3c1d6bbc BL	262	X509V3_CTX *ctx)
b7a26e6d DSH	263	{
	264	unsigned char *ext_der=NULL;
	265	long ext_len;
	266	ASN1_OBJECT *obj=NULL;
	267	ASN1_OCTET_STRING *oct=NULL;
	268	X509_EXTENSION *extension=NULL;
	269	if (!(obj = OBJ_txt2obj(ext, 0)))
	270	{
	271	X509V3err(X509V3_F_V3_GENERIC_EXTENSION,X509V3_R_EXTENSION_NAME_ERROR);
	272	ERR_add_error_data(2, "name=", ext);
	273	goto err;
	274	}
388ff0b0	275
9ea1b878 DSH	276	if (gen_type == 1)
	277	ext_der = string_to_hex(value, &ext_len);
	278	else if (gen_type == 2)
	279	ext_der = generic_asn1(value, ctx, &ext_len);
	280
	281	if (ext_der == NULL)
b7a26e6d DSH	282	{
	283	X509V3err(X509V3_F_V3_GENERIC_EXTENSION,X509V3_R_EXTENSION_VALUE_ERROR);
	284	ERR_add_error_data(2, "value=", value);
	285	goto err;
	286	}
388ff0b0	287
b7a26e6d DSH	288	if (!(oct = M_ASN1_OCTET_STRING_new()))
	289	{
	290	X509V3err(X509V3_F_V3_GENERIC_EXTENSION,ERR_R_MALLOC_FAILURE);
	291	goto err;
	292	}
388ff0b0	293
b7a26e6d DSH	294	oct->data = ext_der;
	295	oct->length = ext_len;
	296	ext_der = NULL;
388ff0b0	297
b7a26e6d	298	extension = X509_EXTENSION_create_by_OBJ(NULL, obj, crit, oct);
388ff0b0	299
b7a26e6d DSH	300	err:
	301	ASN1_OBJECT_free(obj);
	302	M_ASN1_OCTET_STRING_free(oct);
	303	if(ext_der) OPENSSL_free(ext_der);
	304	return extension;
	305
	306	}
388ff0b0	307
9ea1b878 DSH	308	static unsigned char generic_asn1(char value, X509V3_CTX ctx, long ext_len)
	309	{
	310	ASN1_TYPE *typ;
	311	unsigned char *ext_der = NULL;
	312	typ = ASN1_generate_v3(value, ctx);
	313	if (typ == NULL)
	314	return NULL;
	315	*ext_len = i2d_ASN1_TYPE(typ, &ext_der);
	316	ASN1_TYPE_free(typ);
	317	return ext_der;
	318	}
388ff0b0	319
9aeaf1b4	320	/* This is the main function: add a bunch of extensions based on a config file
b7a26e6d	321	* section to an extension STACK.
9aeaf1b4 DSH	322	*/
9aeaf1b4 DSH	323
b7a26e6d DSH	324
b7a26e6d DSH	325	int X509V3_EXT_add_nconf_sk(CONF conf, X509V3_CTX ctx, char *section,
3c1d6bbc	326	STACK_OF(X509_EXTENSION) **sk)
b7a26e6d	327	{
9aeaf1b4	328	X509_EXTENSION *ext;
ba404b5e	329	STACK_OF(CONF_VALUE) *nval;
9aeaf1b4 DSH	330	CONF_VALUE *val;
9aeaf1b4 DSH	331	int i;
b7a26e6d DSH	332	if (!(nval = NCONF_get_section(conf, section))) return 0;
	333	for (i = 0; i < sk_CONF_VALUE_num(nval); i++)
	334	{
ba404b5e	335	val = sk_CONF_VALUE_value(nval, i);
b7a26e6d	336	if (!(ext = X509V3_EXT_nconf(conf, ctx, val->name, val->value)))
9aeaf1b4	337	return 0;
b7a26e6d	338	if (sk) X509v3_add_ext(sk, ext, -1);
9aeaf1b4	339	X509_EXTENSION_free(ext);
b7a26e6d	340	}
9aeaf1b4	341	return 1;
b7a26e6d DSH	342	}
	343
	344	/* Convenience functions to add extensions to a certificate, CRL and request */
	345
	346	int X509V3_EXT_add_nconf(CONF conf, X509V3_CTX ctx, char *section,
3c1d6bbc	347	X509 *cert)
b7a26e6d DSH	348	{
	349	STACK_OF(X509_EXTENSION) **sk = NULL;
	350	if (cert)
	351	sk = &cert->cert_info->extensions;
	352	return X509V3_EXT_add_nconf_sk(conf, ctx, section, sk);
	353	}
9aeaf1b4	354
1756d405 DSH	355	/* Same as above but for a CRL */
1756d405 DSH	356
b7a26e6d	357	int X509V3_EXT_CRL_add_nconf(CONF conf, X509V3_CTX ctx, char *section,
3c1d6bbc	358	X509_CRL *crl)
b7a26e6d DSH	359	{
	360	STACK_OF(X509_EXTENSION) **sk = NULL;
	361	if (crl)
	362	sk = &crl->crl->extensions;
	363	return X509V3_EXT_add_nconf_sk(conf, ctx, section, sk);
1756d405	364	}
1756d405	365
c79b16e1 DSH	366	/* Add extensions to certificate request */
c79b16e1 DSH	367
b7a26e6d	368	int X509V3_EXT_REQ_add_nconf(CONF conf, X509V3_CTX ctx, char *section,
c79b16e1	369	X509_REQ *req)
b7a26e6d DSH	370	{
b7a26e6d DSH	371	STACK_OF(X509_EXTENSION) extlist = NULL, *sk = NULL;
c79b16e1	372	int i;
b7a26e6d DSH	373	if (req)
	374	sk = &extlist;
	375	i = X509V3_EXT_add_nconf_sk(conf, ctx, section, sk);
	376	if (!i \|\| !sk)
	377	return i;
	378	i = X509_REQ_add_extensions(req, extlist);
c79b16e1 DSH	379	sk_X509_EXTENSION_pop_free(extlist, X509_EXTENSION_free);
c79b16e1 DSH	380	return i;
b7a26e6d	381	}
c79b16e1	382
1d48dd00 DSH	383	/* Config database functions */
1d48dd00 DSH	384
6b691a5c	385	char * X509V3_get_string(X509V3_CTX ctx, char name, char *section)
b7a26e6d	386	{
f0dc08e6 DSH	387	if(!ctx->db \|\| !ctx->db_meth \|\| !ctx->db_meth->get_string)
	388	{
	389	X509V3err(X509V3_F_X509V3_GET_STRING,X509V3_R_OPERATION_NOT_DEFINED);
	390	return NULL;
	391	}
b7a26e6d	392	if (ctx->db_meth->get_string)
1d48dd00 DSH	393	return ctx->db_meth->get_string(ctx->db, name, section);
1d48dd00 DSH	394	return NULL;
b7a26e6d	395	}
1d48dd00	396
ba404b5e	397	STACK_OF(CONF_VALUE) * X509V3_get_section(X509V3_CTX ctx, char section)
b7a26e6d	398	{
f0dc08e6 DSH	399	if(!ctx->db \|\| !ctx->db_meth \|\| !ctx->db_meth->get_section)
	400	{
	401	X509V3err(X509V3_F_X509V3_GET_SECTION,X509V3_R_OPERATION_NOT_DEFINED);
	402	return NULL;
	403	}
b7a26e6d	404	if (ctx->db_meth->get_section)
1d48dd00 DSH	405	return ctx->db_meth->get_section(ctx->db, section);
1d48dd00 DSH	406	return NULL;
b7a26e6d	407	}
1d48dd00	408
6b691a5c	409	void X509V3_string_free(X509V3_CTX ctx, char str)
b7a26e6d DSH	410	{
	411	if (!str) return;
	412	if (ctx->db_meth->free_string)
f5fedc04	413	ctx->db_meth->free_string(ctx->db, str);
b7a26e6d	414	}
1d48dd00	415
ba404b5e	416	void X509V3_section_free(X509V3_CTX ctx, STACK_OF(CONF_VALUE) section)
b7a26e6d DSH	417	{
	418	if (!section) return;
	419	if (ctx->db_meth->free_section)
f5fedc04	420	ctx->db_meth->free_section(ctx->db, section);
b7a26e6d DSH	421	}
	422
	423	static char nconf_get_string(void db, char section, char value)
	424	{
	425	return NCONF_get_string(db, section, value);
	426	}
	427
	428	static STACK_OF(CONF_VALUE) nconf_get_section(void db, char *section)
	429	{
	430	return NCONF_get_section(db, section);
	431	}
	432
	433	static X509V3_CONF_METHOD nconf_method = {
	434	nconf_get_string,
	435	nconf_get_section,
	436	NULL,
	437	NULL
	438	};
	439
	440	void X509V3_set_nconf(X509V3_CTX ctx, CONF conf)
	441	{
	442	ctx->db_meth = &nconf_method;
	443	ctx->db = conf;
	444	}
	445
	446	void X509V3_set_ctx(X509V3_CTX ctx, X509 issuer, X509 subj, X509_REQ req,
3c1d6bbc	447	X509_CRL *crl, int flags)
b7a26e6d DSH	448	{
	449	ctx->issuer_cert = issuer;
	450	ctx->subject_cert = subj;
	451	ctx->crl = crl;
	452	ctx->subject_req = req;
	453	ctx->flags = flags;
	454	}
	455
	456	/* Old conf compatibility functions */
	457
3c1d6bbc BL	458	X509_EXTENSION X509V3_EXT_conf(LHASH_OF(CONF_VALUE) conf, X509V3_CTX *ctx,
3c1d6bbc BL	459	char name, char value)
b7a26e6d DSH	460	{
	461	CONF ctmp;
	462	CONF_set_nconf(&ctmp, conf);
	463	return X509V3_EXT_nconf(&ctmp, ctx, name, value);
	464	}
	465
	466	/* LHASH conf: Config file /
	467	/* char value: Value /
3c1d6bbc BL	468	X509_EXTENSION X509V3_EXT_conf_nid(LHASH_OF(CONF_VALUE) conf, X509V3_CTX *ctx,
3c1d6bbc BL	469	int ext_nid, char *value)
b7a26e6d DSH	470	{
	471	CONF ctmp;
	472	CONF_set_nconf(&ctmp, conf);
	473	return X509V3_EXT_nconf_nid(&ctmp, ctx, ext_nid, value);
	474	}
1d48dd00	475
6b691a5c	476	static char conf_lhash_get_string(void db, char section, char value)
b7a26e6d	477	{
1d48dd00	478	return CONF_get_string(db, section, value);
b7a26e6d	479	}
1d48dd00	480
ba404b5e	481	static STACK_OF(CONF_VALUE) conf_lhash_get_section(void db, char *section)
b7a26e6d	482	{
1d48dd00	483	return CONF_get_section(db, section);
b7a26e6d	484	}
1d48dd00 DSH	485
	486	static X509V3_CONF_METHOD conf_lhash_method = {
	487	conf_lhash_get_string,
	488	conf_lhash_get_section,
	489	NULL,
	490	NULL
	491	};
	492
3c1d6bbc	493	void X509V3_set_conf_lhash(X509V3_CTX ctx, LHASH_OF(CONF_VALUE) lhash)
b7a26e6d	494	{
1d48dd00 DSH	495	ctx->db_meth = &conf_lhash_method;
1d48dd00 DSH	496	ctx->db = lhash;
b7a26e6d	497	}
1d48dd00	498
3c1d6bbc BL	499	int X509V3_EXT_add_conf(LHASH_OF(CONF_VALUE) conf, X509V3_CTX ctx,
3c1d6bbc BL	500	char section, X509 cert)
b7a26e6d DSH	501	{
	502	CONF ctmp;
	503	CONF_set_nconf(&ctmp, conf);
	504	return X509V3_EXT_add_nconf(&ctmp, ctx, section, cert);
	505	}
	506
	507	/* Same as above but for a CRL */
	508
3c1d6bbc BL	509	int X509V3_EXT_CRL_add_conf(LHASH_OF(CONF_VALUE) conf, X509V3_CTX ctx,
3c1d6bbc BL	510	char section, X509_CRL crl)
b7a26e6d DSH	511	{
	512	CONF ctmp;
	513	CONF_set_nconf(&ctmp, conf);
	514	return X509V3_EXT_CRL_add_nconf(&ctmp, ctx, section, crl);
	515	}
	516
	517	/* Add extensions to certificate request */
	518
3c1d6bbc BL	519	int X509V3_EXT_REQ_add_conf(LHASH_OF(CONF_VALUE) conf, X509V3_CTX ctx,
3c1d6bbc BL	520	char section, X509_REQ req)
b7a26e6d DSH	521	{
	522	CONF ctmp;
	523	CONF_set_nconf(&ctmp, conf);
	524	return X509V3_EXT_REQ_add_nconf(&ctmp, ctx, section, req);
	525	}