freebsd-nq/lib/hx509/ks_p12.c
2011-09-29 05:23:57 +00:00

705 lines
16 KiB
C

/*
* Copyright (c) 2004 - 2007 Kungliga Tekniska Högskolan
* (Royal Institute of Technology, Stockholm, Sweden).
* 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. Neither the name of the Institute nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS 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 INSTITUTE OR 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.
*/
#include "hx_locl.h"
RCSID("$Id: ks_p12.c 21146 2007-06-18 21:37:25Z lha $");
struct ks_pkcs12 {
hx509_certs certs;
char *fn;
};
typedef int (*collector_func)(hx509_context,
struct hx509_collector *,
const void *, size_t,
const PKCS12_Attributes *);
struct type {
const heim_oid * (*oid)(void);
collector_func func;
};
static void
parse_pkcs12_type(hx509_context, struct hx509_collector *, const heim_oid *,
const void *, size_t, const PKCS12_Attributes *);
static const PKCS12_Attribute *
find_attribute(const PKCS12_Attributes *attrs, const heim_oid *oid)
{
int i;
if (attrs == NULL)
return NULL;
for (i = 0; i < attrs->len; i++)
if (der_heim_oid_cmp(oid, &attrs->val[i].attrId) == 0)
return &attrs->val[i];
return NULL;
}
static int
keyBag_parser(hx509_context context,
struct hx509_collector *c,
const void *data, size_t length,
const PKCS12_Attributes *attrs)
{
const PKCS12_Attribute *attr;
PKCS8PrivateKeyInfo ki;
const heim_octet_string *os = NULL;
int ret;
attr = find_attribute(attrs, oid_id_pkcs_9_at_localKeyId());
if (attr)
os = &attr->attrValues;
ret = decode_PKCS8PrivateKeyInfo(data, length, &ki, NULL);
if (ret)
return ret;
_hx509_collector_private_key_add(context,
c,
&ki.privateKeyAlgorithm,
NULL,
&ki.privateKey,
os);
free_PKCS8PrivateKeyInfo(&ki);
return 0;
}
static int
ShroudedKeyBag_parser(hx509_context context,
struct hx509_collector *c,
const void *data, size_t length,
const PKCS12_Attributes *attrs)
{
PKCS8EncryptedPrivateKeyInfo pk;
heim_octet_string content;
int ret;
memset(&pk, 0, sizeof(pk));
ret = decode_PKCS8EncryptedPrivateKeyInfo(data, length, &pk, NULL);
if (ret)
return ret;
ret = _hx509_pbe_decrypt(context,
_hx509_collector_get_lock(c),
&pk.encryptionAlgorithm,
&pk.encryptedData,
&content);
free_PKCS8EncryptedPrivateKeyInfo(&pk);
if (ret)
return ret;
ret = keyBag_parser(context, c, content.data, content.length, attrs);
der_free_octet_string(&content);
return ret;
}
static int
certBag_parser(hx509_context context,
struct hx509_collector *c,
const void *data, size_t length,
const PKCS12_Attributes *attrs)
{
heim_octet_string os;
hx509_cert cert;
PKCS12_CertBag cb;
int ret;
ret = decode_PKCS12_CertBag(data, length, &cb, NULL);
if (ret)
return ret;
if (der_heim_oid_cmp(oid_id_pkcs_9_at_certTypes_x509(), &cb.certType)) {
free_PKCS12_CertBag(&cb);
return 0;
}
ret = decode_PKCS12_OctetString(cb.certValue.data,
cb.certValue.length,
&os,
NULL);
free_PKCS12_CertBag(&cb);
if (ret)
return ret;
ret = hx509_cert_init_data(context, os.data, os.length, &cert);
der_free_octet_string(&os);
if (ret)
return ret;
ret = _hx509_collector_certs_add(context, c, cert);
if (ret) {
hx509_cert_free(cert);
return ret;
}
{
const PKCS12_Attribute *attr;
const heim_oid * (*oids[])(void) = {
oid_id_pkcs_9_at_localKeyId, oid_id_pkcs_9_at_friendlyName
};
int i;
for (i = 0; i < sizeof(oids)/sizeof(oids[0]); i++) {
const heim_oid *oid = (*(oids[i]))();
attr = find_attribute(attrs, oid);
if (attr)
_hx509_set_cert_attribute(context, cert, oid,
&attr->attrValues);
}
}
hx509_cert_free(cert);
return 0;
}
static int
parse_safe_content(hx509_context context,
struct hx509_collector *c,
const unsigned char *p, size_t len)
{
PKCS12_SafeContents sc;
int ret, i;
memset(&sc, 0, sizeof(sc));
ret = decode_PKCS12_SafeContents(p, len, &sc, NULL);
if (ret)
return ret;
for (i = 0; i < sc.len ; i++)
parse_pkcs12_type(context,
c,
&sc.val[i].bagId,
sc.val[i].bagValue.data,
sc.val[i].bagValue.length,
sc.val[i].bagAttributes);
free_PKCS12_SafeContents(&sc);
return 0;
}
static int
safeContent_parser(hx509_context context,
struct hx509_collector *c,
const void *data, size_t length,
const PKCS12_Attributes *attrs)
{
heim_octet_string os;
int ret;
ret = decode_PKCS12_OctetString(data, length, &os, NULL);
if (ret)
return ret;
ret = parse_safe_content(context, c, os.data, os.length);
der_free_octet_string(&os);
return ret;
}
static int
encryptedData_parser(hx509_context context,
struct hx509_collector *c,
const void *data, size_t length,
const PKCS12_Attributes *attrs)
{
heim_octet_string content;
heim_oid contentType;
int ret;
memset(&contentType, 0, sizeof(contentType));
ret = hx509_cms_decrypt_encrypted(context,
_hx509_collector_get_lock(c),
data, length,
&contentType,
&content);
if (ret)
return ret;
if (der_heim_oid_cmp(&contentType, oid_id_pkcs7_data()) == 0)
ret = parse_safe_content(context, c, content.data, content.length);
der_free_octet_string(&content);
der_free_oid(&contentType);
return ret;
}
static int
envelopedData_parser(hx509_context context,
struct hx509_collector *c,
const void *data, size_t length,
const PKCS12_Attributes *attrs)
{
heim_octet_string content;
heim_oid contentType;
hx509_lock lock;
int ret;
memset(&contentType, 0, sizeof(contentType));
lock = _hx509_collector_get_lock(c);
ret = hx509_cms_unenvelope(context,
_hx509_lock_unlock_certs(lock),
0,
data, length,
NULL,
&contentType,
&content);
if (ret) {
hx509_set_error_string(context, HX509_ERROR_APPEND, ret,
"PKCS12 failed to unenvelope");
return ret;
}
if (der_heim_oid_cmp(&contentType, oid_id_pkcs7_data()) == 0)
ret = parse_safe_content(context, c, content.data, content.length);
der_free_octet_string(&content);
der_free_oid(&contentType);
return ret;
}
struct type bagtypes[] = {
{ oid_id_pkcs12_keyBag, keyBag_parser },
{ oid_id_pkcs12_pkcs8ShroudedKeyBag, ShroudedKeyBag_parser },
{ oid_id_pkcs12_certBag, certBag_parser },
{ oid_id_pkcs7_data, safeContent_parser },
{ oid_id_pkcs7_encryptedData, encryptedData_parser },
{ oid_id_pkcs7_envelopedData, envelopedData_parser }
};
static void
parse_pkcs12_type(hx509_context context,
struct hx509_collector *c,
const heim_oid *oid,
const void *data, size_t length,
const PKCS12_Attributes *attrs)
{
int i;
for (i = 0; i < sizeof(bagtypes)/sizeof(bagtypes[0]); i++)
if (der_heim_oid_cmp((*bagtypes[i].oid)(), oid) == 0)
(*bagtypes[i].func)(context, c, data, length, attrs);
}
static int
p12_init(hx509_context context,
hx509_certs certs, void **data, int flags,
const char *residue, hx509_lock lock)
{
struct ks_pkcs12 *p12;
size_t len;
void *buf;
PKCS12_PFX pfx;
PKCS12_AuthenticatedSafe as;
int ret, i;
struct hx509_collector *c;
*data = NULL;
if (lock == NULL)
lock = _hx509_empty_lock;
ret = _hx509_collector_alloc(context, lock, &c);
if (ret)
return ret;
p12 = calloc(1, sizeof(*p12));
if (p12 == NULL) {
ret = ENOMEM;
hx509_set_error_string(context, 0, ret, "out of memory");
goto out;
}
p12->fn = strdup(residue);
if (p12->fn == NULL) {
ret = ENOMEM;
hx509_set_error_string(context, 0, ret, "out of memory");
goto out;
}
if (flags & HX509_CERTS_CREATE) {
ret = hx509_certs_init(context, "MEMORY:ks-file-create",
0, lock, &p12->certs);
if (ret == 0)
*data = p12;
goto out;
}
ret = _hx509_map_file(residue, &buf, &len, NULL);
if (ret) {
hx509_clear_error_string(context);
goto out;
}
ret = decode_PKCS12_PFX(buf, len, &pfx, NULL);
_hx509_unmap_file(buf, len);
if (ret) {
hx509_set_error_string(context, 0, ret,
"Failed to decode the PFX in %s", residue);
goto out;
}
if (der_heim_oid_cmp(&pfx.authSafe.contentType, oid_id_pkcs7_data()) != 0) {
free_PKCS12_PFX(&pfx);
ret = EINVAL;
hx509_set_error_string(context, 0, ret,
"PKCS PFX isn't a pkcs7-data container");
goto out;
}
if (pfx.authSafe.content == NULL) {
free_PKCS12_PFX(&pfx);
ret = EINVAL;
hx509_set_error_string(context, 0, ret,
"PKCS PFX missing data");
goto out;
}
{
heim_octet_string asdata;
ret = decode_PKCS12_OctetString(pfx.authSafe.content->data,
pfx.authSafe.content->length,
&asdata,
NULL);
free_PKCS12_PFX(&pfx);
if (ret) {
hx509_clear_error_string(context);
goto out;
}
ret = decode_PKCS12_AuthenticatedSafe(asdata.data,
asdata.length,
&as,
NULL);
der_free_octet_string(&asdata);
if (ret) {
hx509_clear_error_string(context);
goto out;
}
}
for (i = 0; i < as.len; i++)
parse_pkcs12_type(context,
c,
&as.val[i].contentType,
as.val[i].content->data,
as.val[i].content->length,
NULL);
free_PKCS12_AuthenticatedSafe(&as);
ret = _hx509_collector_collect_certs(context, c, &p12->certs);
if (ret == 0)
*data = p12;
out:
_hx509_collector_free(c);
if (ret && p12) {
if (p12->fn)
free(p12->fn);
if (p12->certs)
hx509_certs_free(&p12->certs);
free(p12);
}
return ret;
}
static int
addBag(hx509_context context,
PKCS12_AuthenticatedSafe *as,
const heim_oid *oid,
void *data,
size_t length)
{
void *ptr;
int ret;
ptr = realloc(as->val, sizeof(as->val[0]) * (as->len + 1));
if (ptr == NULL) {
hx509_set_error_string(context, 0, ENOMEM, "out of memory");
return ENOMEM;
}
as->val = ptr;
ret = der_copy_oid(oid, &as->val[as->len].contentType);
if (ret) {
hx509_set_error_string(context, 0, ret, "out of memory");
return ret;
}
as->val[as->len].content = calloc(1, sizeof(*as->val[0].content));
if (as->val[as->len].content == NULL) {
der_free_oid(&as->val[as->len].contentType);
hx509_set_error_string(context, 0, ENOMEM, "malloc out of memory");
return ENOMEM;
}
as->val[as->len].content->data = data;
as->val[as->len].content->length = length;
as->len++;
return 0;
}
static int
store_func(hx509_context context, void *ctx, hx509_cert c)
{
PKCS12_AuthenticatedSafe *as = ctx;
PKCS12_OctetString os;
PKCS12_CertBag cb;
size_t size;
int ret;
memset(&os, 0, sizeof(os));
memset(&cb, 0, sizeof(cb));
os.data = NULL;
os.length = 0;
ret = hx509_cert_binary(context, c, &os);
if (ret)
return ret;
ASN1_MALLOC_ENCODE(PKCS12_OctetString,
cb.certValue.data,cb.certValue.length,
&os, &size, ret);
free(os.data);
if (ret)
goto out;
ret = der_copy_oid(oid_id_pkcs_9_at_certTypes_x509(), &cb.certType);
if (ret) {
free_PKCS12_CertBag(&cb);
goto out;
}
ASN1_MALLOC_ENCODE(PKCS12_CertBag, os.data, os.length,
&cb, &size, ret);
free_PKCS12_CertBag(&cb);
if (ret)
goto out;
ret = addBag(context, as, oid_id_pkcs12_certBag(), os.data, os.length);
if (_hx509_cert_private_key_exportable(c)) {
hx509_private_key key = _hx509_cert_private_key(c);
PKCS8PrivateKeyInfo pki;
memset(&pki, 0, sizeof(pki));
ret = der_parse_hex_heim_integer("00", &pki.version);
if (ret)
return ret;
ret = _hx509_private_key_oid(context, key,
&pki.privateKeyAlgorithm.algorithm);
if (ret) {
free_PKCS8PrivateKeyInfo(&pki);
return ret;
}
ret = _hx509_private_key_export(context,
_hx509_cert_private_key(c),
&pki.privateKey);
if (ret) {
free_PKCS8PrivateKeyInfo(&pki);
return ret;
}
/* set attribute, oid_id_pkcs_9_at_localKeyId() */
ASN1_MALLOC_ENCODE(PKCS8PrivateKeyInfo, os.data, os.length,
&pki, &size, ret);
free_PKCS8PrivateKeyInfo(&pki);
if (ret)
return ret;
ret = addBag(context, as, oid_id_pkcs12_keyBag(), os.data, os.length);
if (ret)
return ret;
}
out:
return ret;
}
static int
p12_store(hx509_context context,
hx509_certs certs, void *data, int flags, hx509_lock lock)
{
struct ks_pkcs12 *p12 = data;
PKCS12_PFX pfx;
PKCS12_AuthenticatedSafe as;
PKCS12_OctetString asdata;
size_t size;
int ret;
memset(&as, 0, sizeof(as));
memset(&pfx, 0, sizeof(pfx));
ret = hx509_certs_iter(context, p12->certs, store_func, &as);
if (ret)
goto out;
ASN1_MALLOC_ENCODE(PKCS12_AuthenticatedSafe, asdata.data, asdata.length,
&as, &size, ret);
free_PKCS12_AuthenticatedSafe(&as);
if (ret)
return ret;
ret = der_parse_hex_heim_integer("03", &pfx.version);
if (ret) {
free(asdata.data);
goto out;
}
pfx.authSafe.content = calloc(1, sizeof(*pfx.authSafe.content));
ASN1_MALLOC_ENCODE(PKCS12_OctetString,
pfx.authSafe.content->data,
pfx.authSafe.content->length,
&asdata, &size, ret);
free(asdata.data);
if (ret)
goto out;
ret = der_copy_oid(oid_id_pkcs7_data(), &pfx.authSafe.contentType);
if (ret)
goto out;
ASN1_MALLOC_ENCODE(PKCS12_PFX, asdata.data, asdata.length,
&pfx, &size, ret);
if (ret)
goto out;
#if 0
const struct _hx509_password *pw;
pw = _hx509_lock_get_passwords(lock);
if (pw != NULL) {
pfx.macData = calloc(1, sizeof(*pfx.macData));
if (pfx.macData == NULL) {
ret = ENOMEM;
hx509_set_error_string(context, 0, ret, "malloc out of memory");
return ret;
}
if (pfx.macData == NULL) {
free(asdata.data);
goto out;
}
}
ret = calculate_hash(&aspath, pw, pfx.macData);
#endif
rk_dumpdata(p12->fn, asdata.data, asdata.length);
free(asdata.data);
out:
free_PKCS12_AuthenticatedSafe(&as);
free_PKCS12_PFX(&pfx);
return ret;
}
static int
p12_free(hx509_certs certs, void *data)
{
struct ks_pkcs12 *p12 = data;
hx509_certs_free(&p12->certs);
free(p12->fn);
free(p12);
return 0;
}
static int
p12_add(hx509_context context, hx509_certs certs, void *data, hx509_cert c)
{
struct ks_pkcs12 *p12 = data;
return hx509_certs_add(context, p12->certs, c);
}
static int
p12_iter_start(hx509_context context,
hx509_certs certs,
void *data,
void **cursor)
{
struct ks_pkcs12 *p12 = data;
return hx509_certs_start_seq(context, p12->certs, cursor);
}
static int
p12_iter(hx509_context context,
hx509_certs certs,
void *data,
void *cursor,
hx509_cert *cert)
{
struct ks_pkcs12 *p12 = data;
return hx509_certs_next_cert(context, p12->certs, cursor, cert);
}
static int
p12_iter_end(hx509_context context,
hx509_certs certs,
void *data,
void *cursor)
{
struct ks_pkcs12 *p12 = data;
return hx509_certs_end_seq(context, p12->certs, cursor);
}
static struct hx509_keyset_ops keyset_pkcs12 = {
"PKCS12",
0,
p12_init,
p12_store,
p12_free,
p12_add,
NULL,
p12_iter_start,
p12_iter,
p12_iter_end
};
void
_hx509_ks_pkcs12_register(hx509_context context)
{
_hx509_ks_register(context, &keyset_pkcs12);
}