Head

GCC Code Coverage Report

Directory:	./		Exec	Total	Coverage
File:	lib/libcrypto/crypto/../../libssl/src/crypto/x509v3/v3_conf.c	Lines:	0	204	0.0 %
Date:	2016-12-06	Branches:	0	112	0.0 %


/* $OpenBSD: v3_conf.c,v 1.19 2015/12/14 03:39:14 beck Exp $ */
/* Written by Dr Stephen N Henson (steve@openssl.org) 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 <ctype.h>
#include <stdio.h>
#include <string.h>

#include <openssl/conf.h>
#include <openssl/err.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_asprintf_error_data("name=%s, value=%s", name, 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;
	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) {
		STACK_OF(CONF_VALUE) *nval;

		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_asprintf_error_data("name=%s,section=%s",
			    OBJ_nid2sn(ext_nid), value);
			if (*value != '@')
				sk_CONF_VALUE_pop_free(nval, X509V3_conf_free);
			return NULL;
		}
		ext_struc = method->v2i(method, ctx, nval);
		if (*value != '@')
			sk_CONF_VALUE_pop_free(nval, X509V3_conf_free);
	} else if (method->s2i) {
		ext_struc = method->s2i(method, ctx, value);
	} else if (method->r2i) {
		if (!ctx->db || !ctx->db_meth) {
			X509V3err(X509V3_F_DO_EXT_NCONF,
			    X509V3_R_NO_CONFIG_DATABASE);
			return NULL;
		}
		ext_struc = method->r2i(method, ctx, value);
	} else {
		X509V3err(X509V3_F_DO_EXT_NCONF,
		    X509V3_R_EXTENSION_SETTING_NOT_SUPPORTED);
		ERR_asprintf_error_data("name=%s", OBJ_nid2sn(ext_nid));
		return NULL;
	}
	if (ext_struc == NULL)
		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 = NULL;
	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 = malloc(ext_len)))
			goto merr;
		p = ext_der;
		method->i2d(ext_struc, &p);
	}
	if (!(ext_oct = 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;
	ASN1_OCTET_STRING_free(ext_oct);

	return ext;

merr:
	ASN1_OCTET_STRING_free(ext_oct);
	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 = 0;
	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_asprintf_error_data("name=%s", 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);
	else {
		ERR_asprintf_error_data("Unexpected generic extension type %d", gen_type);
		goto err;
	}

	if (ext_der == NULL) {
		X509V3err(X509V3_F_V3_GENERIC_EXTENSION,
		    X509V3_R_EXTENSION_VALUE_ERROR);
		ERR_asprintf_error_data("value=%s", value);
		goto err;
	}

	if (!(oct = 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);
	ASN1_OCTET_STRING_free(oct);
	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);
}


Generated by: GCOVR (Version 3.3)

Line	Branch	Exec	Source
1			/* $OpenBSD: v3_conf.c,v 1.19 2015/12/14 03:39:14 beck Exp $ */
2			/* Written by Dr Stephen N Henson (steve@openssl.org) for the OpenSSL
3			* project 1999.
4			*/
5			/* ====================================================================
6			* Copyright (c) 1999-2002 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			/* extension creation utilities */
59
60			#include <ctype.h>
61			#include <stdio.h>
62			#include <string.h>
63
64			#include <openssl/conf.h>
65			#include <openssl/err.h>
66			#include <openssl/x509.h>
67			#include <openssl/x509v3.h>
68
69			static int v3_check_critical(char **value);
70			static int v3_check_generic(char **value);
71			static X509_EXTENSION do_ext_nconf(CONF conf, X509V3_CTX *ctx, int ext_nid,
72			int crit, char *value);
73			static X509_EXTENSION v3_generic_extension(const char ext, char *value,
74			int crit, int type, X509V3_CTX *ctx);
75			static char conf_lhash_get_string(void db, char section, char value);
76			static STACK_OF(CONF_VALUE) conf_lhash_get_section(void db, char *section);
77			static X509_EXTENSION do_ext_i2d(const X509V3_EXT_METHOD method, int ext_nid,
78			int crit, void *ext_struc);
79			static unsigned char generic_asn1(char value, X509V3_CTX ctx, long ext_len);
80
81			/* CONF conf: Config file /
82			/* char name: Name /
83			/* char value: Value /
84			X509_EXTENSION *
85			X509V3_EXT_nconf(CONF conf, X509V3_CTX ctx, char name, char value)
86			{
87			int crit;
88			int ext_type;
89			X509_EXTENSION *ret;
90
91			crit = v3_check_critical(&value);
92			if ((ext_type = v3_check_generic(&value)))
93			return v3_generic_extension(name, value, crit, ext_type, ctx);
94			ret = do_ext_nconf(conf, ctx, OBJ_sn2nid(name), crit, value);
95			if (!ret) {
96			X509V3err(X509V3_F_X509V3_EXT_NCONF,
97			X509V3_R_ERROR_IN_EXTENSION);
98			ERR_asprintf_error_data("name=%s, value=%s", name, value);
99			}
100			return ret;
101			}
102
103			/* CONF conf: Config file /
104			/* char value: Value /
105			X509_EXTENSION *
106			X509V3_EXT_nconf_nid(CONF conf, X509V3_CTX ctx, int ext_nid, char *value)
107			{
108			int crit;
109			int ext_type;
110
111			crit = v3_check_critical(&value);
112			if ((ext_type = v3_check_generic(&value)))
113			return v3_generic_extension(OBJ_nid2sn(ext_nid),
114			value, crit, ext_type, ctx);
115			return do_ext_nconf(conf, ctx, ext_nid, crit, value);
116			}
117
118			/* CONF conf: Config file /
119			/* char value: Value /
120			static X509_EXTENSION *
121			do_ext_nconf(CONF conf, X509V3_CTX ctx, int ext_nid, int crit, char *value)
122			{
123			const X509V3_EXT_METHOD *method;
124			X509_EXTENSION *ext;
125			void *ext_struc;
126
127			if (ext_nid == NID_undef) {
128			X509V3err(X509V3_F_DO_EXT_NCONF,
129			X509V3_R_UNKNOWN_EXTENSION_NAME);
130			return NULL;
131			}
132			if (!(method = X509V3_EXT_get_nid(ext_nid))) {
133			X509V3err(X509V3_F_DO_EXT_NCONF, X509V3_R_UNKNOWN_EXTENSION);
134			return NULL;
135			}
136			/* Now get internal extension representation based on type */
137			if (method->v2i) {
138			STACK_OF(CONF_VALUE) *nval;
139
140			if (*value == '@')
141			nval = NCONF_get_section(conf, value + 1);
142			else
143			nval = X509V3_parse_list(value);
144			if (sk_CONF_VALUE_num(nval) <= 0) {
145			X509V3err(X509V3_F_DO_EXT_NCONF,
146			X509V3_R_INVALID_EXTENSION_STRING);
147			ERR_asprintf_error_data("name=%s,section=%s",
148			OBJ_nid2sn(ext_nid), value);
149			if (*value != '@')
150			sk_CONF_VALUE_pop_free(nval, X509V3_conf_free);
151			return NULL;
152			}
153			ext_struc = method->v2i(method, ctx, nval);
154			if (*value != '@')
155			sk_CONF_VALUE_pop_free(nval, X509V3_conf_free);
156			} else if (method->s2i) {
157			ext_struc = method->s2i(method, ctx, value);
158			} else if (method->r2i) {
159			if (!ctx->db \|\| !ctx->db_meth) {
160			X509V3err(X509V3_F_DO_EXT_NCONF,
161			X509V3_R_NO_CONFIG_DATABASE);
162			return NULL;
163			}
164			ext_struc = method->r2i(method, ctx, value);
165			} else {
166			X509V3err(X509V3_F_DO_EXT_NCONF,
167			X509V3_R_EXTENSION_SETTING_NOT_SUPPORTED);
168			ERR_asprintf_error_data("name=%s", OBJ_nid2sn(ext_nid));
169			return NULL;
170			}
171			if (ext_struc == NULL)
172			return NULL;
173
174			ext = do_ext_i2d(method, ext_nid, crit, ext_struc);
175			if (method->it)
176			ASN1_item_free(ext_struc, ASN1_ITEM_ptr(method->it));
177			else
178			method->ext_free(ext_struc);
179			return ext;
180			}
181
182			static X509_EXTENSION *
183			do_ext_i2d(const X509V3_EXT_METHOD *method, int ext_nid, int crit,
184			void *ext_struc)
185			{
186			unsigned char *ext_der;
187			int ext_len;
188			ASN1_OCTET_STRING *ext_oct = NULL;
189			X509_EXTENSION *ext;
190
191			/* Convert internal representation to DER */
192			if (method->it) {
193			ext_der = NULL;
194			ext_len = ASN1_item_i2d(ext_struc, &ext_der,
195			ASN1_ITEM_ptr(method->it));
196			if (ext_len < 0)
197			goto merr;
198			} else {
199			unsigned char *p;
200			ext_len = method->i2d(ext_struc, NULL);
201			if (!(ext_der = malloc(ext_len)))
202			goto merr;
203			p = ext_der;
204			method->i2d(ext_struc, &p);
205			}
206			if (!(ext_oct = ASN1_OCTET_STRING_new()))
207			goto merr;
208			ext_oct->data = ext_der;
209			ext_oct->length = ext_len;
210
211			ext = X509_EXTENSION_create_by_NID(NULL, ext_nid, crit, ext_oct);
212			if (!ext)
213			goto merr;
214			ASN1_OCTET_STRING_free(ext_oct);
215
216			return ext;
217
218			merr:
219			ASN1_OCTET_STRING_free(ext_oct);
220			X509V3err(X509V3_F_DO_EXT_I2D, ERR_R_MALLOC_FAILURE);
221			return NULL;
222
223			}
224
225			/* Given an internal structure, nid and critical flag create an extension */
226
227			X509_EXTENSION *
228			X509V3_EXT_i2d(int ext_nid, int crit, void *ext_struc)
229			{
230			const X509V3_EXT_METHOD *method;
231
232			if (!(method = X509V3_EXT_get_nid(ext_nid))) {
233			X509V3err(X509V3_F_X509V3_EXT_I2D, X509V3_R_UNKNOWN_EXTENSION);
234			return NULL;
235			}
236			return do_ext_i2d(method, ext_nid, crit, ext_struc);
237			}
238
239			/* Check the extension string for critical flag */
240			static int
241			v3_check_critical(char **value)
242			{
243			char p = value;
244
245			if ((strlen(p) < 9) \|\| strncmp(p, "critical,", 9))
246			return 0;
247			p += 9;
248			while (isspace((unsigned char)*p)) p++;
249			*value = p;
250			return 1;
251			}
252
253			/* Check extension string for generic extension and return the type */
254			static int
255			v3_check_generic(char **value)
256			{
257			int gen_type = 0;
258			char p = value;
259
260			if ((strlen(p) >= 4) && !strncmp(p, "DER:", 4)) {
261			p += 4;
262			gen_type = 1;
263			} else if ((strlen(p) >= 5) && !strncmp(p, "ASN1:", 5)) {
264			p += 5;
265			gen_type = 2;
266			} else
267			return 0;
268
269			while (isspace((unsigned char)*p))
270			p++;
271			*value = p;
272			return gen_type;
273			}
274
275			/* Create a generic extension: for now just handle DER type */
276			static X509_EXTENSION *
277			v3_generic_extension(const char ext, char value, int crit, int gen_type,
278			X509V3_CTX *ctx)
279			{
280			unsigned char *ext_der = NULL;
281			long ext_len = 0;
282			ASN1_OBJECT *obj = NULL;
283			ASN1_OCTET_STRING *oct = NULL;
284			X509_EXTENSION *extension = NULL;
285
286			if (!(obj = OBJ_txt2obj(ext, 0))) {
287			X509V3err(X509V3_F_V3_GENERIC_EXTENSION,
288			X509V3_R_EXTENSION_NAME_ERROR);
289			ERR_asprintf_error_data("name=%s", ext);
290			goto err;
291			}
292
293			if (gen_type == 1)
294			ext_der = string_to_hex(value, &ext_len);
295			else if (gen_type == 2)
296			ext_der = generic_asn1(value, ctx, &ext_len);
297			else {
298			ERR_asprintf_error_data("Unexpected generic extension type %d", gen_type);
299			goto err;
300			}
301
302			if (ext_der == NULL) {
303			X509V3err(X509V3_F_V3_GENERIC_EXTENSION,
304			X509V3_R_EXTENSION_VALUE_ERROR);
305			ERR_asprintf_error_data("value=%s", value);
306			goto err;
307			}
308
309			if (!(oct = ASN1_OCTET_STRING_new())) {
310			X509V3err(X509V3_F_V3_GENERIC_EXTENSION, ERR_R_MALLOC_FAILURE);
311			goto err;
312			}
313
314			oct->data = ext_der;
315			oct->length = ext_len;
316			ext_der = NULL;
317
318			extension = X509_EXTENSION_create_by_OBJ(NULL, obj, crit, oct);
319
320			err:
321			ASN1_OBJECT_free(obj);
322			ASN1_OCTET_STRING_free(oct);
323			free(ext_der);
324			return extension;
325			}
326
327			static unsigned char *
328			generic_asn1(char value, X509V3_CTX ctx, long *ext_len)
329			{
330			ASN1_TYPE *typ;
331			unsigned char *ext_der = NULL;
332
333			typ = ASN1_generate_v3(value, ctx);
334			if (typ == NULL)
335			return NULL;
336			*ext_len = i2d_ASN1_TYPE(typ, &ext_der);
337			ASN1_TYPE_free(typ);
338			return ext_der;
339			}
340
341			/* This is the main function: add a bunch of extensions based on a config file
342			* section to an extension STACK.
343			*/
344
345			int
346			X509V3_EXT_add_nconf_sk(CONF conf, X509V3_CTX ctx, char *section,
347			STACK_OF(X509_EXTENSION) **sk)
348			{
349			X509_EXTENSION *ext;
350			STACK_OF(CONF_VALUE) *nval;
351			CONF_VALUE *val;
352			int i;
353
354			if (!(nval = NCONF_get_section(conf, section)))
355			return 0;
356			for (i = 0; i < sk_CONF_VALUE_num(nval); i++) {
357			val = sk_CONF_VALUE_value(nval, i);
358			if (!(ext = X509V3_EXT_nconf(conf, ctx, val->name, val->value)))
359			return 0;
360			if (sk)
361			X509v3_add_ext(sk, ext, -1);
362			X509_EXTENSION_free(ext);
363			}
364			return 1;
365			}
366
367			/* Convenience functions to add extensions to a certificate, CRL and request */
368
369			int
370			X509V3_EXT_add_nconf(CONF conf, X509V3_CTX ctx, char section, X509 cert)
371			{
372			STACK_OF(X509_EXTENSION) **sk = NULL;
373
374			if (cert)
375			sk = &cert->cert_info->extensions;
376			return X509V3_EXT_add_nconf_sk(conf, ctx, section, sk);
377			}
378
379			/* Same as above but for a CRL */
380
381			int
382			X509V3_EXT_CRL_add_nconf(CONF conf, X509V3_CTX ctx, char *section,
383			X509_CRL *crl)
384			{
385			STACK_OF(X509_EXTENSION) **sk = NULL;
386
387			if (crl)
388			sk = &crl->crl->extensions;
389			return X509V3_EXT_add_nconf_sk(conf, ctx, section, sk);
390			}
391
392			/* Add extensions to certificate request */
393
394			int
395			X509V3_EXT_REQ_add_nconf(CONF conf, X509V3_CTX ctx, char *section,
396			X509_REQ *req)
397			{
398			STACK_OF(X509_EXTENSION) extlist = NULL, *sk = NULL;
399			int i;
400
401			if (req)
402			sk = &extlist;
403			i = X509V3_EXT_add_nconf_sk(conf, ctx, section, sk);
404			if (!i \|\| !sk)
405			return i;
406			i = X509_REQ_add_extensions(req, extlist);
407			sk_X509_EXTENSION_pop_free(extlist, X509_EXTENSION_free);
408			return i;
409			}
410
411			/* Config database functions */
412
413			char *
414			X509V3_get_string(X509V3_CTX ctx, char name, char *section)
415			{
416			if (!ctx->db \|\| !ctx->db_meth \|\| !ctx->db_meth->get_string) {
417			X509V3err(X509V3_F_X509V3_GET_STRING,
418			X509V3_R_OPERATION_NOT_DEFINED);
419			return NULL;
420			}
421			if (ctx->db_meth->get_string)
422			return ctx->db_meth->get_string(ctx->db, name, section);
423			return NULL;
424			}
425
426			STACK_OF(CONF_VALUE) *
427			X509V3_get_section(X509V3_CTX ctx, char section)
428			{
429			if (!ctx->db \|\| !ctx->db_meth \|\| !ctx->db_meth->get_section) {
430			X509V3err(X509V3_F_X509V3_GET_SECTION,
431			X509V3_R_OPERATION_NOT_DEFINED);
432			return NULL;
433			}
434			if (ctx->db_meth->get_section)
435			return ctx->db_meth->get_section(ctx->db, section);
436			return NULL;
437			}
438
439			void
440			X509V3_string_free(X509V3_CTX ctx, char str)
441			{
442			if (!str)
443			return;
444			if (ctx->db_meth->free_string)
445			ctx->db_meth->free_string(ctx->db, str);
446			}
447
448			void
449			X509V3_section_free(X509V3_CTX ctx, STACK_OF(CONF_VALUE) section)
450			{
451			if (!section)
452			return;
453			if (ctx->db_meth->free_section)
454			ctx->db_meth->free_section(ctx->db, section);
455			}
456
457			static char *
458			nconf_get_string(void db, char section, char *value)
459			{
460			return NCONF_get_string(db, section, value);
461			}
462
463			static
464			STACK_OF(CONF_VALUE) nconf_get_section(void db, char *section)
465			{
466			return NCONF_get_section(db, section);
467			}
468
469			static X509V3_CONF_METHOD nconf_method = {
470			nconf_get_string,
471			nconf_get_section,
472			NULL,
473			NULL
474			};
475
476			void
477			X509V3_set_nconf(X509V3_CTX ctx, CONF conf)
478			{
479			ctx->db_meth = &nconf_method;
480			ctx->db = conf;
481			}
482
483			void
484			X509V3_set_ctx(X509V3_CTX ctx, X509 issuer, X509 subj, X509_REQ req,
485			X509_CRL *crl, int flags)
486			{
487			ctx->issuer_cert = issuer;
488			ctx->subject_cert = subj;
489			ctx->crl = crl;
490			ctx->subject_req = req;
491			ctx->flags = flags;
492			}
493
494			/* Old conf compatibility functions */
495
496			X509_EXTENSION *
497			X509V3_EXT_conf(LHASH_OF(CONF_VALUE) conf, X509V3_CTX ctx, char *name,
498			char *value)
499			{
500			CONF ctmp;
501
502			CONF_set_nconf(&ctmp, conf);
503			return X509V3_EXT_nconf(&ctmp, ctx, name, value);
504			}
505
506			/* LHASH conf: Config file /
507			/* char value: Value /
508			X509_EXTENSION *
509			X509V3_EXT_conf_nid(LHASH_OF(CONF_VALUE) conf, X509V3_CTX ctx, int ext_nid,
510			char *value)
511			{
512			CONF ctmp;
513
514			CONF_set_nconf(&ctmp, conf);
515			return X509V3_EXT_nconf_nid(&ctmp, ctx, ext_nid, value);
516			}
517
518			static char *
519			conf_lhash_get_string(void db, char section, char *value)
520			{
521			return CONF_get_string(db, section, value);
522			}
523
524			static STACK_OF(CONF_VALUE) *
525			conf_lhash_get_section(void db, char section)
526			{
527			return CONF_get_section(db, section);
528			}
529
530			static X509V3_CONF_METHOD conf_lhash_method = {
531			conf_lhash_get_string,
532			conf_lhash_get_section,
533			NULL,
534			NULL
535			};
536
537			void
538			X509V3_set_conf_lhash(X509V3_CTX ctx, LHASH_OF(CONF_VALUE) lhash)
539			{
540			ctx->db_meth = &conf_lhash_method;
541			ctx->db = lhash;
542			}
543
544			int
545			X509V3_EXT_add_conf(LHASH_OF(CONF_VALUE) conf, X509V3_CTX ctx, char *section,
546			X509 *cert)
547			{
548			CONF ctmp;
549
550			CONF_set_nconf(&ctmp, conf);
551			return X509V3_EXT_add_nconf(&ctmp, ctx, section, cert);
552			}
553
554			/* Same as above but for a CRL */
555
556			int
557			X509V3_EXT_CRL_add_conf(LHASH_OF(CONF_VALUE) conf, X509V3_CTX ctx,
558			char section, X509_CRL crl)
559			{
560			CONF ctmp;
561
562			CONF_set_nconf(&ctmp, conf);
563			return X509V3_EXT_CRL_add_nconf(&ctmp, ctx, section, crl);
564			}
565
566			/* Add extensions to certificate request */
567
568			int
569			X509V3_EXT_REQ_add_conf(LHASH_OF(CONF_VALUE) conf, X509V3_CTX ctx,
570			char section, X509_REQ req)
571			{
572			CONF ctmp;
573
574			CONF_set_nconf(&ctmp, conf);
575			return X509V3_EXT_REQ_add_nconf(&ctmp, ctx, section, req);
576			}