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GCC Code Coverage Report

Directory:	./		Exec	Total	Coverage
File:	lib/libcrypto/pkcs12/p12_kiss.c	Lines:	0	105	0.0 %
Date:	2017-11-07	Branches:	0	105	0.0 %


/* $OpenBSD: p12_kiss.c,v 1.19 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 The OpenSSL Project.  All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 *
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 *
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in
 *    the documentation and/or other materials provided with the
 *    distribution.
 *
 * 3. All advertising materials mentioning features or use of this
 *    software must display the following acknowledgment:
 *    "This product includes software developed by the OpenSSL Project
 *    for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)"
 *
 * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
 *    endorse or promote products derived from this software without
 *    prior written permission. For written permission, please contact
 *    licensing@OpenSSL.org.
 *
 * 5. Products derived from this software may not be called "OpenSSL"
 *    nor may "OpenSSL" appear in their names without prior written
 *    permission of the OpenSSL Project.
 *
 * 6. Redistributions of any form whatsoever must retain the following
 *    acknowledgment:
 *    "This product includes software developed by the OpenSSL Project
 *    for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)"
 *
 * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
 * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
 * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE OpenSSL PROJECT OR
 * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
 * OF THE POSSIBILITY OF SUCH DAMAGE.
 * ====================================================================
 *
 * This product includes cryptographic software written by Eric Young
 * (eay@cryptsoft.com).  This product includes software written by Tim
 * Hudson (tjh@cryptsoft.com).
 *
 */

#include <stdio.h>

#include <openssl/err.h>
#include <openssl/pkcs12.h>

/* Simplified PKCS#12 routines */

static int parse_pk12( PKCS12 *p12, const char *pass, int passlen,
    EVP_PKEY **pkey, STACK_OF(X509) *ocerts);

static int parse_bags( STACK_OF(PKCS12_SAFEBAG) *bags, const char *pass,
    int passlen, EVP_PKEY **pkey, STACK_OF(X509) *ocerts);

static int parse_bag( PKCS12_SAFEBAG *bag, const char *pass, int passlen,
    EVP_PKEY **pkey, STACK_OF(X509) *ocerts);

/* Parse and decrypt a PKCS#12 structure returning user key, user cert
 * and other (CA) certs. Note either ca should be NULL, *ca should be NULL,
 * or it should point to a valid STACK structure. pkey and cert can be
 * passed unitialised.
 */

int
PKCS12_parse(PKCS12 *p12, const char *pass, EVP_PKEY **pkey, X509 **cert,
    STACK_OF(X509) **ca)
{
	STACK_OF(X509) *ocerts = NULL;
	X509 *x = NULL;
	/* Check for NULL PKCS12 structure */

	if (!p12) {
		PKCS12error(PKCS12_R_INVALID_NULL_PKCS12_POINTER);
		return 0;
	}

	if (pkey)
		*pkey = NULL;
	if (cert)
		*cert = NULL;

	/* Check the mac */

	/* If password is zero length or NULL then try verifying both cases
	 * to determine which password is correct. The reason for this is that
	 * under PKCS#12 password based encryption no password and a zero length
	 * password are two different things...
	 */

	if (!pass || !*pass) {
		if (PKCS12_verify_mac(p12, NULL, 0))
			pass = NULL;
		else if (PKCS12_verify_mac(p12, "", 0))
			pass = "";
		else {
			PKCS12error(PKCS12_R_MAC_VERIFY_FAILURE);
			goto err;
		}
	} else if (!PKCS12_verify_mac(p12, pass, -1)) {
		PKCS12error(PKCS12_R_MAC_VERIFY_FAILURE);
		goto err;
	}

	/* Allocate stack for other certificates */
	ocerts = sk_X509_new_null();
	if (!ocerts) {
		PKCS12error(ERR_R_MALLOC_FAILURE);
		return 0;
	}

	if (!parse_pk12 (p12, pass, -1, pkey, ocerts)) {
		PKCS12error(PKCS12_R_PARSE_ERROR);
		goto err;
	}

	while ((x = sk_X509_pop(ocerts))) {
		if (pkey && *pkey && cert && !*cert) {
			if (X509_check_private_key(x, *pkey)) {
				*cert = x;
				x = NULL;
			}
		}

		if (ca && x) {
			if (!*ca)
				*ca = sk_X509_new_null();
			if (!*ca)
				goto err;
			if (!sk_X509_push(*ca, x))
				goto err;
			x = NULL;
		}
		X509_free(x);
	}

	if (ocerts)
		sk_X509_pop_free(ocerts, X509_free);

	return 1;

err:
	if (pkey && *pkey)
		EVP_PKEY_free(*pkey);
	if (cert)
		X509_free(*cert);
	X509_free(x);
	if (ocerts)
		sk_X509_pop_free(ocerts, X509_free);
	return 0;
}

/* Parse the outer PKCS#12 structure */

static int
parse_pk12(PKCS12 *p12, const char *pass, int passlen, EVP_PKEY **pkey,
    STACK_OF(X509) *ocerts)
{
	STACK_OF(PKCS7) *asafes;
	STACK_OF(PKCS12_SAFEBAG) *bags;
	int i, bagnid;
	PKCS7 *p7;

	if (!(asafes = PKCS12_unpack_authsafes (p12)))
		return 0;
	for (i = 0; i < sk_PKCS7_num (asafes); i++) {
		p7 = sk_PKCS7_value (asafes, i);
		bagnid = OBJ_obj2nid (p7->type);
		if (bagnid == NID_pkcs7_data) {
			bags = PKCS12_unpack_p7data(p7);
		} else if (bagnid == NID_pkcs7_encrypted) {
			bags = PKCS12_unpack_p7encdata(p7, pass, passlen);
		} else
			continue;
		if (!bags) {
			sk_PKCS7_pop_free(asafes, PKCS7_free);
			return 0;
		}
		if (!parse_bags(bags, pass, passlen, pkey, ocerts)) {
			sk_PKCS12_SAFEBAG_pop_free(bags, PKCS12_SAFEBAG_free);
			sk_PKCS7_pop_free(asafes, PKCS7_free);
			return 0;
		}
		sk_PKCS12_SAFEBAG_pop_free(bags, PKCS12_SAFEBAG_free);
	}
	sk_PKCS7_pop_free(asafes, PKCS7_free);
	return 1;
}

static int
parse_bags(STACK_OF(PKCS12_SAFEBAG) *bags, const char *pass, int passlen,
    EVP_PKEY **pkey, STACK_OF(X509) *ocerts)
{
	int i;

	for (i = 0; i < sk_PKCS12_SAFEBAG_num(bags); i++) {
		if (!parse_bag(sk_PKCS12_SAFEBAG_value(bags, i), pass, passlen,
		    pkey, ocerts))
			return 0;
	}
	return 1;
}

static int
parse_bag(PKCS12_SAFEBAG *bag, const char *pass, int passlen, EVP_PKEY **pkey,
    STACK_OF(X509) *ocerts)
{
	PKCS8_PRIV_KEY_INFO *p8;
	X509 *x509;
	ASN1_TYPE *attrib;
	ASN1_BMPSTRING *fname = NULL;
	ASN1_OCTET_STRING *lkid = NULL;

	if ((attrib = PKCS12_get_attr (bag, NID_friendlyName)))
		fname = attrib->value.bmpstring;

	if ((attrib = PKCS12_get_attr (bag, NID_localKeyID)))
		lkid = attrib->value.octet_string;

	switch (OBJ_obj2nid(bag->type)) {
	case NID_keyBag:
		if (!pkey || *pkey)
			return 1;
		if (!(*pkey = EVP_PKCS82PKEY(bag->value.keybag)))
			return 0;
		break;

	case NID_pkcs8ShroudedKeyBag:
		if (!pkey || *pkey)
			return 1;
		if (!(p8 = PKCS12_decrypt_skey(bag, pass, passlen)))
			return 0;
		*pkey = EVP_PKCS82PKEY(p8);
		PKCS8_PRIV_KEY_INFO_free(p8);
		if (!(*pkey))
			return 0;
		break;

	case NID_certBag:
		if (OBJ_obj2nid(bag->value.bag->type) != NID_x509Certificate )
			return 1;
		if (!(x509 = PKCS12_certbag2x509(bag)))
			return 0;
		if (lkid && !X509_keyid_set1(x509, lkid->data, lkid->length)) {
			X509_free(x509);
			return 0;
		}
		if (fname) {
			int len, r;
			unsigned char *data;
			len = ASN1_STRING_to_UTF8(&data, fname);
			if (len >= 0) {
				r = X509_alias_set1(x509, data, len);
				free(data);
				if (!r) {
					X509_free(x509);
					return 0;
				}
			}
		}

		if (!sk_X509_push(ocerts, x509)) {
			X509_free(x509);
			return 0;
		}

		break;

	case NID_safeContentsBag:
		return parse_bags(bag->value.safes, pass, passlen,
		    pkey, ocerts);
		break;

	default:
		return 1;
		break;
	}
	return 1;
}


Generated by: GCOVR (Version 3.3)

Line	Branch	Exec	Source
1			/* $OpenBSD: p12_kiss.c,v 1.19 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 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
59			#include <stdio.h>
60
61			#include <openssl/err.h>
62			#include <openssl/pkcs12.h>
63
64			/* Simplified PKCS#12 routines */
65
66			static int parse_pk12( PKCS12 p12, const char pass, int passlen,
67			EVP_PKEY *pkey, STACK_OF(X509) ocerts);
68
69			static int parse_bags( STACK_OF(PKCS12_SAFEBAG) bags, const char pass,
70			int passlen, EVP_PKEY *pkey, STACK_OF(X509) ocerts);
71
72			static int parse_bag( PKCS12_SAFEBAG bag, const char pass, int passlen,
73			EVP_PKEY *pkey, STACK_OF(X509) ocerts);
74
75			/* Parse and decrypt a PKCS#12 structure returning user key, user cert
76			* and other (CA) certs. Note either ca should be NULL, *ca should be NULL,
77			* or it should point to a valid STACK structure. pkey and cert can be
78			* passed unitialised.
79			*/
80
81			int
82			PKCS12_parse(PKCS12 p12, const char pass, EVP_PKEY pkey, X509 cert,
83			STACK_OF(X509) **ca)
84			{
85			STACK_OF(X509) *ocerts = NULL;
86			X509 *x = NULL;
87			/* Check for NULL PKCS12 structure */
88
89			if (!p12) {
90			PKCS12error(PKCS12_R_INVALID_NULL_PKCS12_POINTER);
91			return 0;
92			}
93
94			if (pkey)
95			*pkey = NULL;
96			if (cert)
97			*cert = NULL;
98
99			/* Check the mac */
100
101			/* If password is zero length or NULL then try verifying both cases
102			* to determine which password is correct. The reason for this is that
103			* under PKCS#12 password based encryption no password and a zero length
104			* password are two different things...
105			*/
106
107			if (!pass \|\| !*pass) {
108			if (PKCS12_verify_mac(p12, NULL, 0))
109			pass = NULL;
110			else if (PKCS12_verify_mac(p12, "", 0))
111			pass = "";
112			else {
113			PKCS12error(PKCS12_R_MAC_VERIFY_FAILURE);
114			goto err;
115			}
116			} else if (!PKCS12_verify_mac(p12, pass, -1)) {
117			PKCS12error(PKCS12_R_MAC_VERIFY_FAILURE);
118			goto err;
119			}
120
121			/* Allocate stack for other certificates */
122			ocerts = sk_X509_new_null();
123			if (!ocerts) {
124			PKCS12error(ERR_R_MALLOC_FAILURE);
125			return 0;
126			}
127
128			if (!parse_pk12 (p12, pass, -1, pkey, ocerts)) {
129			PKCS12error(PKCS12_R_PARSE_ERROR);
130			goto err;
131			}
132
133			while ((x = sk_X509_pop(ocerts))) {
134			if (pkey && pkey && cert && !cert) {
135			if (X509_check_private_key(x, *pkey)) {
136			*cert = x;
137			x = NULL;
138			}
139			}
140
141			if (ca && x) {
142			if (!*ca)
143			*ca = sk_X509_new_null();
144			if (!*ca)
145			goto err;
146			if (!sk_X509_push(*ca, x))
147			goto err;
148			x = NULL;
149			}
150			X509_free(x);
151			}
152
153			if (ocerts)
154			sk_X509_pop_free(ocerts, X509_free);
155
156			return 1;
157
158			err:
159			if (pkey && *pkey)
160			EVP_PKEY_free(*pkey);
161			if (cert)
162			X509_free(*cert);
163			X509_free(x);
164			if (ocerts)
165			sk_X509_pop_free(ocerts, X509_free);
166			return 0;
167			}
168
169			/* Parse the outer PKCS#12 structure */
170
171			static int
172			parse_pk12(PKCS12 p12, const char pass, int passlen, EVP_PKEY **pkey,
173			STACK_OF(X509) *ocerts)
174			{
175			STACK_OF(PKCS7) *asafes;
176			STACK_OF(PKCS12_SAFEBAG) *bags;
177			int i, bagnid;
178			PKCS7 *p7;
179
180			if (!(asafes = PKCS12_unpack_authsafes (p12)))
181			return 0;
182			for (i = 0; i < sk_PKCS7_num (asafes); i++) {
183			p7 = sk_PKCS7_value (asafes, i);
184			bagnid = OBJ_obj2nid (p7->type);
185			if (bagnid == NID_pkcs7_data) {
186			bags = PKCS12_unpack_p7data(p7);
187			} else if (bagnid == NID_pkcs7_encrypted) {
188			bags = PKCS12_unpack_p7encdata(p7, pass, passlen);
189			} else
190			continue;
191			if (!bags) {
192			sk_PKCS7_pop_free(asafes, PKCS7_free);
193			return 0;
194			}
195			if (!parse_bags(bags, pass, passlen, pkey, ocerts)) {
196			sk_PKCS12_SAFEBAG_pop_free(bags, PKCS12_SAFEBAG_free);
197			sk_PKCS7_pop_free(asafes, PKCS7_free);
198			return 0;
199			}
200			sk_PKCS12_SAFEBAG_pop_free(bags, PKCS12_SAFEBAG_free);
201			}
202			sk_PKCS7_pop_free(asafes, PKCS7_free);
203			return 1;
204			}
205
206			static int
207			parse_bags(STACK_OF(PKCS12_SAFEBAG) bags, const char pass, int passlen,
208			EVP_PKEY *pkey, STACK_OF(X509) ocerts)
209			{
210			int i;
211
212			for (i = 0; i < sk_PKCS12_SAFEBAG_num(bags); i++) {
213			if (!parse_bag(sk_PKCS12_SAFEBAG_value(bags, i), pass, passlen,
214			pkey, ocerts))
215			return 0;
216			}
217			return 1;
218			}
219
220			static int
221			parse_bag(PKCS12_SAFEBAG bag, const char pass, int passlen, EVP_PKEY **pkey,
222			STACK_OF(X509) *ocerts)
223			{
224			PKCS8_PRIV_KEY_INFO *p8;
225			X509 *x509;
226			ASN1_TYPE *attrib;
227			ASN1_BMPSTRING *fname = NULL;
228			ASN1_OCTET_STRING *lkid = NULL;
229
230			if ((attrib = PKCS12_get_attr (bag, NID_friendlyName)))
231			fname = attrib->value.bmpstring;
232
233			if ((attrib = PKCS12_get_attr (bag, NID_localKeyID)))
234			lkid = attrib->value.octet_string;
235
236			switch (OBJ_obj2nid(bag->type)) {
237			case NID_keyBag:
238			if (!pkey \|\| *pkey)
239			return 1;
240			if (!(*pkey = EVP_PKCS82PKEY(bag->value.keybag)))
241			return 0;
242			break;
243
244			case NID_pkcs8ShroudedKeyBag:
245			if (!pkey \|\| *pkey)
246			return 1;
247			if (!(p8 = PKCS12_decrypt_skey(bag, pass, passlen)))
248			return 0;
249			*pkey = EVP_PKCS82PKEY(p8);
250			PKCS8_PRIV_KEY_INFO_free(p8);
251			if (!(*pkey))
252			return 0;
253			break;
254
255			case NID_certBag:
256			if (OBJ_obj2nid(bag->value.bag->type) != NID_x509Certificate )
257			return 1;
258			if (!(x509 = PKCS12_certbag2x509(bag)))
259			return 0;
260			if (lkid && !X509_keyid_set1(x509, lkid->data, lkid->length)) {
261			X509_free(x509);
262			return 0;
263			}
264			if (fname) {
265			int len, r;
266			unsigned char *data;
267			len = ASN1_STRING_to_UTF8(&data, fname);
268			if (len >= 0) {
269			r = X509_alias_set1(x509, data, len);
270			free(data);
271			if (!r) {
272			X509_free(x509);
273			return 0;
274			}
275			}
276			}
277
278			if (!sk_X509_push(ocerts, x509)) {
279			X509_free(x509);
280			return 0;
281			}
282
283			break;
284
285			case NID_safeContentsBag:
286			return parse_bags(bag->value.safes, pass, passlen,
287			pkey, ocerts);
288			break;
289
290			default:
291			return 1;
292			break;
293			}
294			return 1;
295			}