Head

GCC Code Coverage Report

Directory:	./		Exec	Total	Coverage
File:	lib/libcrypto/x509v3/v3_conf.c	Lines:	79	206	38.3 %
Date:	2017-11-13	Branches:	37	117	31.6 %


/* $OpenBSD: v3_conf.c,v 1.21 2017/01/29 17:49:23 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) {
		X509V3error(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) {
		X509V3error(X509V3_R_UNKNOWN_EXTENSION_NAME);
		return NULL;
	}
	if (!(method = X509V3_EXT_get_nid(ext_nid))) {
		X509V3error(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) {
			X509V3error(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) {
			X509V3error(X509V3_R_NO_CONFIG_DATABASE);
			return NULL;
		}
		ext_struc = method->r2i(method, ctx, value);
	} else {
		X509V3error(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, 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,
		    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);
	X509V3error(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))) {
		X509V3error(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))) {
		X509V3error(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) {
		X509V3error(X509V3_R_EXTENSION_VALUE_ERROR);
		ERR_asprintf_error_data("value=%s", value);
		goto err;
	}

	if (!(oct = ASN1_OCTET_STRING_new())) {
		X509V3error(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) {
		X509V3error(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) {
		X509V3error(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 1.21 2017/01/29 17:49:23 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		20	crit = v3_check_critical(&value);
92	✗✓	20	if ((ext_type = v3_check_generic(&value)))
93			return v3_generic_extension(name, value, crit, ext_type, ctx);
94		20	ret = do_ext_nconf(conf, ctx, OBJ_sn2nid(name), crit, value);
95	✗✓	20	if (!ret) {
96			X509V3error(X509V3_R_ERROR_IN_EXTENSION);
97			ERR_asprintf_error_data("name=%s, value=%s", name, value);
98			}
99		20	return ret;
100		20	}
101
102			/* CONF conf: Config file /
103			/* char value: Value /
104			X509_EXTENSION *
105			X509V3_EXT_nconf_nid(CONF conf, X509V3_CTX ctx, int ext_nid, char *value)
106			{
107			int crit;
108			int ext_type;
109
110			crit = v3_check_critical(&value);
111			if ((ext_type = v3_check_generic(&value)))
112			return v3_generic_extension(OBJ_nid2sn(ext_nid),
113			value, crit, ext_type, ctx);
114			return do_ext_nconf(conf, ctx, ext_nid, crit, value);
115			}
116
117			/* CONF conf: Config file /
118			/* char value: Value /
119			static X509_EXTENSION *
120			do_ext_nconf(CONF conf, X509V3_CTX ctx, int ext_nid, int crit, char *value)
121			{
122			const X509V3_EXT_METHOD *method;
123			X509_EXTENSION *ext;
124			void *ext_struc;
125
126	✗✓	40	if (ext_nid == NID_undef) {
127			X509V3error(X509V3_R_UNKNOWN_EXTENSION_NAME);
128			return NULL;
129			}
130	✗✓	20	if (!(method = X509V3_EXT_get_nid(ext_nid))) {
131			X509V3error(X509V3_R_UNKNOWN_EXTENSION);
132			return NULL;
133			}
134			/* Now get internal extension representation based on type */
135	✓✗	20	if (method->v2i) {
136			STACK_OF(CONF_VALUE) *nval;
137
138	✗✓	20	if (*value == '@')
139			nval = NCONF_get_section(conf, value + 1);
140			else
141		20	nval = X509V3_parse_list(value);
142	✗✓	20	if (sk_CONF_VALUE_num(nval) <= 0) {
143			X509V3error(X509V3_R_INVALID_EXTENSION_STRING);
144			ERR_asprintf_error_data("name=%s,section=%s",
145			OBJ_nid2sn(ext_nid), value);
146			if (*value != '@')
147			sk_CONF_VALUE_pop_free(nval, X509V3_conf_free);
148			return NULL;
149			}
150		20	ext_struc = method->v2i(method, ctx, nval);
151	✓✗	20	if (*value != '@')
152		20	sk_CONF_VALUE_pop_free(nval, X509V3_conf_free);
153	✓✗✗✗	20	} else if (method->s2i) {
154			ext_struc = method->s2i(method, ctx, value);
155			} else if (method->r2i) {
156			if (!ctx->db \|\| !ctx->db_meth) {
157			X509V3error(X509V3_R_NO_CONFIG_DATABASE);
158			return NULL;
159			}
160			ext_struc = method->r2i(method, ctx, value);
161			} else {
162			X509V3error(X509V3_R_EXTENSION_SETTING_NOT_SUPPORTED);
163			ERR_asprintf_error_data("name=%s", OBJ_nid2sn(ext_nid));
164			return NULL;
165			}
166	✗✓	20	if (ext_struc == NULL)
167			return NULL;
168
169		20	ext = do_ext_i2d(method, ext_nid, crit, ext_struc);
170	✓✗	20	if (method->it)
171		20	ASN1_item_free(ext_struc, method->it);
172			else
173			method->ext_free(ext_struc);
174		20	return ext;
175		20	}
176
177			static X509_EXTENSION *
178			do_ext_i2d(const X509V3_EXT_METHOD *method, int ext_nid, int crit,
179			void *ext_struc)
180			{
181		130	unsigned char *ext_der;
182			int ext_len;
183			ASN1_OCTET_STRING *ext_oct = NULL;
184			X509_EXTENSION *ext;
185
186			/* Convert internal representation to DER */
187	✓✓	65	if (method->it) {
188		61	ext_der = NULL;
189		122	ext_len = ASN1_item_i2d(ext_struc, &ext_der,
190		61	method->it);
191	✓✗	61	if (ext_len < 0)
192			goto merr;
193			} else {
194		4	unsigned char *p;
195		4	ext_len = method->i2d(ext_struc, NULL);
196	✗✓	4	if (!(ext_der = malloc(ext_len)))
197			goto merr;
198		4	p = ext_der;
199		4	method->i2d(ext_struc, &p);
200	✓✗✓	12	}
201	✓✗	65	if (!(ext_oct = ASN1_OCTET_STRING_new()))
202			goto merr;
203		65	ext_oct->data = ext_der;
204		65	ext_oct->length = ext_len;
205
206		65	ext = X509_EXTENSION_create_by_NID(NULL, ext_nid, crit, ext_oct);
207	✓✗	65	if (!ext)
208			goto merr;
209		65	ASN1_OCTET_STRING_free(ext_oct);
210
211		65	return ext;
212
213			merr:
214			ASN1_OCTET_STRING_free(ext_oct);
215			X509V3error(ERR_R_MALLOC_FAILURE);
216			return NULL;
217
218		65	}
219
220			/* Given an internal structure, nid and critical flag create an extension */
221
222			X509_EXTENSION *
223			X509V3_EXT_i2d(int ext_nid, int crit, void *ext_struc)
224			{
225			const X509V3_EXT_METHOD *method;
226
227	✗✓	90	if (!(method = X509V3_EXT_get_nid(ext_nid))) {
228			X509V3error(X509V3_R_UNKNOWN_EXTENSION);
229			return NULL;
230			}
231		45	return do_ext_i2d(method, ext_nid, crit, ext_struc);
232		45	}
233
234			/* Check the extension string for critical flag */
235			static int
236			v3_check_critical(char **value)
237			{
238		40	char p = value;
239
240	✓✓✓✓	36	if ((strlen(p) < 9) \|\| strncmp(p, "critical,", 9))
241		12	return 0;
242		8	p += 9;
243	✗✓	16	while (isspace((unsigned char)*p)) p++;
244		8	*value = p;
245		8	return 1;
246		20	}
247
248			/* Check extension string for generic extension and return the type */
249			static int
250			v3_check_generic(char **value)
251			{
252			int gen_type = 0;
253		40	char p = value;
254
255	✓✗✗✓	40	if ((strlen(p) >= 4) && !strncmp(p, "DER:", 4)) {
256			p += 4;
257			gen_type = 1;
258	✓✗✗✓	40	} else if ((strlen(p) >= 5) && !strncmp(p, "ASN1:", 5)) {
259			p += 5;
260			gen_type = 2;
261			} else
262		20	return 0;
263
264			while (isspace((unsigned char)*p))
265			p++;
266			*value = p;
267			return gen_type;
268		20	}
269
270			/* Create a generic extension: for now just handle DER type */
271			static X509_EXTENSION *
272			v3_generic_extension(const char ext, char value, int crit, int gen_type,
273			X509V3_CTX *ctx)
274			{
275			unsigned char *ext_der = NULL;
276			long ext_len = 0;
277			ASN1_OBJECT *obj = NULL;
278			ASN1_OCTET_STRING *oct = NULL;
279			X509_EXTENSION *extension = NULL;
280
281			if (!(obj = OBJ_txt2obj(ext, 0))) {
282			X509V3error(X509V3_R_EXTENSION_NAME_ERROR);
283			ERR_asprintf_error_data("name=%s", ext);
284			goto err;
285			}
286
287			if (gen_type == 1)
288			ext_der = string_to_hex(value, &ext_len);
289			else if (gen_type == 2)
290			ext_der = generic_asn1(value, ctx, &ext_len);
291			else {
292			ERR_asprintf_error_data("Unexpected generic extension type %d", gen_type);
293			goto err;
294			}
295
296			if (ext_der == NULL) {
297			X509V3error(X509V3_R_EXTENSION_VALUE_ERROR);
298			ERR_asprintf_error_data("value=%s", value);
299			goto err;
300			}
301
302			if (!(oct = ASN1_OCTET_STRING_new())) {
303			X509V3error(ERR_R_MALLOC_FAILURE);
304			goto err;
305			}
306
307			oct->data = ext_der;
308			oct->length = ext_len;
309			ext_der = NULL;
310
311			extension = X509_EXTENSION_create_by_OBJ(NULL, obj, crit, oct);
312
313			err:
314			ASN1_OBJECT_free(obj);
315			ASN1_OCTET_STRING_free(oct);
316			free(ext_der);
317			return extension;
318			}
319
320			static unsigned char *
321			generic_asn1(char value, X509V3_CTX ctx, long *ext_len)
322			{
323			ASN1_TYPE *typ;
324			unsigned char *ext_der = NULL;
325
326			typ = ASN1_generate_v3(value, ctx);
327			if (typ == NULL)
328			return NULL;
329			*ext_len = i2d_ASN1_TYPE(typ, &ext_der);
330			ASN1_TYPE_free(typ);
331			return ext_der;
332			}
333
334			/* This is the main function: add a bunch of extensions based on a config file
335			* section to an extension STACK.
336			*/
337
338			int
339			X509V3_EXT_add_nconf_sk(CONF conf, X509V3_CTX ctx, char *section,
340			STACK_OF(X509_EXTENSION) **sk)
341			{
342			X509_EXTENSION *ext;
343			STACK_OF(CONF_VALUE) *nval;
344			CONF_VALUE *val;
345			int i;
346
347	✗✓	16	if (!(nval = NCONF_get_section(conf, section)))
348			return 0;
349	✓✓	56	for (i = 0; i < sk_CONF_VALUE_num(nval); i++) {
350		20	val = sk_CONF_VALUE_value(nval, i);
351	✗✓	20	if (!(ext = X509V3_EXT_nconf(conf, ctx, val->name, val->value)))
352			return 0;
353	✓✓	20	if (sk)
354		10	X509v3_add_ext(sk, ext, -1);
355		20	X509_EXTENSION_free(ext);
356			}
357		8	return 1;
358		8	}
359
360			/* Convenience functions to add extensions to a certificate, CRL and request */
361
362			int
363			X509V3_EXT_add_nconf(CONF conf, X509V3_CTX ctx, char section, X509 cert)
364			{
365			STACK_OF(X509_EXTENSION) **sk = NULL;
366
367	✓✓	16	if (cert)
368		4	sk = &cert->cert_info->extensions;
369		8	return X509V3_EXT_add_nconf_sk(conf, ctx, section, sk);
370			}
371
372			/* Same as above but for a CRL */
373
374			int
375			X509V3_EXT_CRL_add_nconf(CONF conf, X509V3_CTX ctx, char *section,
376			X509_CRL *crl)
377			{
378			STACK_OF(X509_EXTENSION) **sk = NULL;
379
380			if (crl)
381			sk = &crl->crl->extensions;
382			return X509V3_EXT_add_nconf_sk(conf, ctx, section, sk);
383			}
384
385			/* Add extensions to certificate request */
386
387			int
388			X509V3_EXT_REQ_add_nconf(CONF conf, X509V3_CTX ctx, char *section,
389			X509_REQ *req)
390			{
391			STACK_OF(X509_EXTENSION) extlist = NULL, *sk = NULL;
392			int i;
393
394			if (req)
395			sk = &extlist;
396			i = X509V3_EXT_add_nconf_sk(conf, ctx, section, sk);
397			if (!i \|\| !sk)
398			return i;
399			i = X509_REQ_add_extensions(req, extlist);
400			sk_X509_EXTENSION_pop_free(extlist, X509_EXTENSION_free);
401			return i;
402			}
403
404			/* Config database functions */
405
406			char *
407			X509V3_get_string(X509V3_CTX ctx, char name, char *section)
408			{
409			if (!ctx->db \|\| !ctx->db_meth \|\| !ctx->db_meth->get_string) {
410			X509V3error(X509V3_R_OPERATION_NOT_DEFINED);
411			return NULL;
412			}
413			if (ctx->db_meth->get_string)
414			return ctx->db_meth->get_string(ctx->db, name, section);
415			return NULL;
416			}
417
418			STACK_OF(CONF_VALUE) *
419			X509V3_get_section(X509V3_CTX ctx, char section)
420			{
421			if (!ctx->db \|\| !ctx->db_meth \|\| !ctx->db_meth->get_section) {
422			X509V3error(X509V3_R_OPERATION_NOT_DEFINED);
423			return NULL;
424			}
425			if (ctx->db_meth->get_section)
426			return ctx->db_meth->get_section(ctx->db, section);
427			return NULL;
428			}
429
430			void
431			X509V3_string_free(X509V3_CTX ctx, char str)
432			{
433			if (!str)
434			return;
435			if (ctx->db_meth->free_string)
436			ctx->db_meth->free_string(ctx->db, str);
437			}
438
439			void
440			X509V3_section_free(X509V3_CTX ctx, STACK_OF(CONF_VALUE) section)
441			{
442			if (!section)
443			return;
444			if (ctx->db_meth->free_section)
445			ctx->db_meth->free_section(ctx->db, section);
446			}
447
448			static char *
449			nconf_get_string(void db, char section, char *value)
450			{
451			return NCONF_get_string(db, section, value);
452			}
453
454			static
455			STACK_OF(CONF_VALUE) nconf_get_section(void db, char *section)
456			{
457			return NCONF_get_section(db, section);
458			}
459
460			static X509V3_CONF_METHOD nconf_method = {
461			nconf_get_string,
462			nconf_get_section,
463			NULL,
464			NULL
465			};
466
467			void
468			X509V3_set_nconf(X509V3_CTX ctx, CONF conf)
469			{
470		52	ctx->db_meth = &nconf_method;
471		26	ctx->db = conf;
472		26	}
473
474			void
475			X509V3_set_ctx(X509V3_CTX ctx, X509 issuer, X509 subj, X509_REQ req,
476			X509_CRL *crl, int flags)
477			{
478		52	ctx->issuer_cert = issuer;
479		26	ctx->subject_cert = subj;
480		26	ctx->crl = crl;
481		26	ctx->subject_req = req;
482		26	ctx->flags = flags;
483		26	}
484
485			/* Old conf compatibility functions */
486
487			X509_EXTENSION *
488			X509V3_EXT_conf(LHASH_OF(CONF_VALUE) conf, X509V3_CTX ctx, char *name,
489			char *value)
490			{
491			CONF ctmp;
492
493			CONF_set_nconf(&ctmp, conf);
494			return X509V3_EXT_nconf(&ctmp, ctx, name, value);
495			}
496
497			/* LHASH conf: Config file /
498			/* char value: Value /
499			X509_EXTENSION *
500			X509V3_EXT_conf_nid(LHASH_OF(CONF_VALUE) conf, X509V3_CTX ctx, int ext_nid,
501			char *value)
502			{
503			CONF ctmp;
504
505			CONF_set_nconf(&ctmp, conf);
506			return X509V3_EXT_nconf_nid(&ctmp, ctx, ext_nid, value);
507			}
508
509			static char *
510			conf_lhash_get_string(void db, char section, char *value)
511			{
512			return CONF_get_string(db, section, value);
513			}
514
515			static STACK_OF(CONF_VALUE) *
516			conf_lhash_get_section(void db, char section)
517			{
518			return CONF_get_section(db, section);
519			}
520
521			static X509V3_CONF_METHOD conf_lhash_method = {
522			conf_lhash_get_string,
523			conf_lhash_get_section,
524			NULL,
525			NULL
526			};
527
528			void
529			X509V3_set_conf_lhash(X509V3_CTX ctx, LHASH_OF(CONF_VALUE) lhash)
530			{
531			ctx->db_meth = &conf_lhash_method;
532			ctx->db = lhash;
533			}
534
535			int
536			X509V3_EXT_add_conf(LHASH_OF(CONF_VALUE) conf, X509V3_CTX ctx, char *section,
537			X509 *cert)
538			{
539			CONF ctmp;
540
541			CONF_set_nconf(&ctmp, conf);
542			return X509V3_EXT_add_nconf(&ctmp, ctx, section, cert);
543			}
544
545			/* Same as above but for a CRL */
546
547			int
548			X509V3_EXT_CRL_add_conf(LHASH_OF(CONF_VALUE) conf, X509V3_CTX ctx,
549			char section, X509_CRL crl)
550			{
551			CONF ctmp;
552
553			CONF_set_nconf(&ctmp, conf);
554			return X509V3_EXT_CRL_add_nconf(&ctmp, ctx, section, crl);
555			}
556
557			/* Add extensions to certificate request */
558
559			int
560			X509V3_EXT_REQ_add_conf(LHASH_OF(CONF_VALUE) conf, X509V3_CTX ctx,
561			char section, X509_REQ req)
562			{
563			CONF ctmp;
564
565			CONF_set_nconf(&ctmp, conf);
566			return X509V3_EXT_REQ_add_nconf(&ctmp, ctx, section, req);
567			}