mirror of
https://github.com/openssl/openssl.git
synced 2024-12-21 06:09:35 +08:00
fecb3aae22
Reviewed-by: Tomas Mraz <tomas@openssl.org> Release: yes
261 lines
7.7 KiB
C
261 lines
7.7 KiB
C
/*
|
|
* Copyright 1999-2022 The OpenSSL Project Authors. All Rights Reserved.
|
|
*
|
|
* Licensed under the Apache License 2.0 (the "License"). You may not use
|
|
* this file except in compliance with the License. You can obtain a copy
|
|
* in the file LICENSE in the source distribution or at
|
|
* https://www.openssl.org/source/license.html
|
|
*/
|
|
|
|
#include <stdio.h>
|
|
#include "internal/cryptlib.h"
|
|
#include <openssl/pkcs12.h>
|
|
#include "crypto/x509.h" /* for ossl_x509_add_cert_new() */
|
|
|
|
/* 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(const 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/or cert may be NULL;
|
|
* if non-NULL the variables they point to can be passed uninitialised.
|
|
*/
|
|
|
|
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;
|
|
|
|
if (pkey != NULL)
|
|
*pkey = NULL;
|
|
if (cert != NULL)
|
|
*cert = NULL;
|
|
|
|
/* Check for NULL PKCS12 structure */
|
|
|
|
if (p12 == NULL) {
|
|
ERR_raise(ERR_LIB_PKCS12, PKCS12_R_INVALID_NULL_PKCS12_POINTER);
|
|
return 0;
|
|
}
|
|
|
|
/* Check the mac */
|
|
if (PKCS12_mac_present(p12)) {
|
|
/*
|
|
* 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 == NULL || *pass == '\0') {
|
|
if (PKCS12_verify_mac(p12, NULL, 0))
|
|
pass = NULL;
|
|
else if (PKCS12_verify_mac(p12, "", 0))
|
|
pass = "";
|
|
else {
|
|
ERR_raise(ERR_LIB_PKCS12, PKCS12_R_MAC_VERIFY_FAILURE);
|
|
goto err;
|
|
}
|
|
} else if (!PKCS12_verify_mac(p12, pass, -1)) {
|
|
ERR_raise(ERR_LIB_PKCS12, PKCS12_R_MAC_VERIFY_FAILURE);
|
|
goto err;
|
|
}
|
|
} else if (pass == NULL || *pass == '\0') {
|
|
pass = NULL;
|
|
}
|
|
|
|
/* If needed, allocate stack for other certificates */
|
|
if ((cert != NULL || ca != NULL)
|
|
&& (ocerts = sk_X509_new_null()) == NULL) {
|
|
ERR_raise(ERR_LIB_PKCS12, ERR_R_MALLOC_FAILURE);
|
|
goto err;
|
|
}
|
|
|
|
if (!parse_pk12(p12, pass, -1, pkey, ocerts)) {
|
|
int err = ERR_peek_last_error();
|
|
|
|
if (ERR_GET_LIB(err) != ERR_LIB_EVP
|
|
&& ERR_GET_REASON(err) != EVP_R_UNSUPPORTED_ALGORITHM)
|
|
ERR_raise(ERR_LIB_PKCS12, PKCS12_R_PARSE_ERROR);
|
|
goto err;
|
|
}
|
|
|
|
/* Split the certs in ocerts over *cert and *ca as far as requested */
|
|
while ((x = sk_X509_shift(ocerts)) != NULL) {
|
|
if (pkey != NULL && *pkey != NULL
|
|
&& cert != NULL && *cert == NULL) {
|
|
int match;
|
|
|
|
ERR_set_mark();
|
|
match = X509_check_private_key(x, *pkey);
|
|
ERR_pop_to_mark();
|
|
if (match) {
|
|
*cert = x;
|
|
continue;
|
|
}
|
|
}
|
|
|
|
if (ca != NULL) {
|
|
if (!ossl_x509_add_cert_new(ca, x, X509_ADD_FLAG_DEFAULT))
|
|
goto err;
|
|
continue;
|
|
}
|
|
X509_free(x);
|
|
}
|
|
sk_X509_free(ocerts);
|
|
|
|
return 1;
|
|
|
|
err:
|
|
|
|
if (pkey != NULL) {
|
|
EVP_PKEY_free(*pkey);
|
|
*pkey = NULL;
|
|
}
|
|
if (cert != NULL) {
|
|
X509_free(*cert);
|
|
*cert = NULL;
|
|
}
|
|
X509_free(x);
|
|
OSSL_STACK_OF_X509_free(ocerts);
|
|
return 0;
|
|
|
|
}
|
|
|
|
/* Parse the outer PKCS#12 structure */
|
|
|
|
/* pkey and/or ocerts may be NULL */
|
|
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)) == NULL)
|
|
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;
|
|
}
|
|
|
|
/* pkey and/or ocerts may be NULL */
|
|
static int parse_bags(const 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;
|
|
}
|
|
|
|
/* pkey and/or ocerts may be NULL */
|
|
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;
|
|
const ASN1_TYPE *attrib;
|
|
ASN1_BMPSTRING *fname = NULL;
|
|
ASN1_OCTET_STRING *lkid = NULL;
|
|
|
|
if ((attrib = PKCS12_SAFEBAG_get0_attr(bag, NID_friendlyName)))
|
|
fname = attrib->value.bmpstring;
|
|
|
|
if ((attrib = PKCS12_SAFEBAG_get0_attr(bag, NID_localKeyID)))
|
|
lkid = attrib->value.octet_string;
|
|
|
|
switch (PKCS12_SAFEBAG_get_nid(bag)) {
|
|
case NID_keyBag:
|
|
if (pkey == NULL || *pkey != NULL)
|
|
return 1;
|
|
*pkey = EVP_PKCS82PKEY(PKCS12_SAFEBAG_get0_p8inf(bag));
|
|
if (*pkey == NULL)
|
|
return 0;
|
|
break;
|
|
|
|
case NID_pkcs8ShroudedKeyBag:
|
|
if (pkey == NULL || *pkey != NULL)
|
|
return 1;
|
|
if ((p8 = PKCS12_decrypt_skey(bag, pass, passlen)) == NULL)
|
|
return 0;
|
|
*pkey = EVP_PKCS82PKEY(p8);
|
|
PKCS8_PRIV_KEY_INFO_free(p8);
|
|
if (!(*pkey))
|
|
return 0;
|
|
break;
|
|
|
|
case NID_certBag:
|
|
if (ocerts == NULL
|
|
|| PKCS12_SAFEBAG_get_bag_nid(bag) != NID_x509Certificate)
|
|
return 1;
|
|
if ((x509 = PKCS12_SAFEBAG_get1_cert(bag)) == NULL)
|
|
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);
|
|
OPENSSL_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(PKCS12_SAFEBAG_get0_safes(bag), pass, passlen, pkey,
|
|
ocerts);
|
|
|
|
default:
|
|
return 1;
|
|
}
|
|
return 1;
|
|
}
|