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/*
* Copyright (c) 2017-2020 [Ribose Inc](https://www.ribose.com).
* Copyright (c) 2009 The NetBSD Foundation, Inc.
* All rights reserved.
*
* This code is originally derived from software contributed to
* The NetBSD Foundation by Alistair Crooks (agc@netbsd.org), and
* carried further by Ribose Inc (https://www.ribose.com).
*
* 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.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS 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 COPYRIGHT HOLDERS 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.
*/
/*
* Copyright (c) 2005-2008 Nominet UK (www.nic.uk)
* All rights reserved.
* Contributors: Ben Laurie, Rachel Willmer. The Contributors have asserted
* their moral rights under the UK Copyright Design and Patents Act 1988 to
* be recorded as the authors of this copyright work.
*
* Licensed under the Apache License, Version 2.0 (the "License"); you may not
* use this file except in compliance with the License.
*
* You may obtain a copy of the License at
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
*
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#if defined(__NetBSD__)
__COPYRIGHT("@(#) Copyright (c) 2009 The NetBSD Foundation, Inc. All rights reserved.");
__RCSID("$NetBSD: keyring.c,v 1.50 2011/06/25 00:37:44 agc Exp $");
#endif
#include <stdlib.h>
#include <string.h>
#include <librepgp/stream-common.h>
#include <librepgp/stream-sig.h>
#include <librepgp/stream-packet.h>
#include <librepgp/stream-key.h>
#include "crypto/mem.h"
#include "types.h"
#include "key_store_pgp.h"
#include "pgp-key.h"
bool
rnp_key_store_add_transferable_subkey(rnp_key_store_t * keyring,
pgp_transferable_subkey_t *tskey,
pgp_key_t * pkey)
{
try {
/* create subkey */
pgp_key_t skey(*tskey, pkey);
/* add it to the storage */
return rnp_key_store_add_key(keyring, &skey);
} catch (const std::exception &e) {
RNP_LOG("%s", e.what());
RNP_LOG_KEY_PKT("failed to create subkey %s", tskey->subkey);
RNP_LOG_KEY("primary key is %s", pkey);
return false;
}
}
bool
rnp_key_store_add_transferable_key(rnp_key_store_t *keyring, pgp_transferable_key_t *tkey)
{
pgp_key_t *addkey = NULL;
/* create key from transferable key */
try {
pgp_key_t key(*tkey);
/* temporary disable key validation */
keyring->disable_validation = true;
/* add key to the storage before subkeys */
addkey = rnp_key_store_add_key(keyring, &key);
} catch (const std::exception &e) {
keyring->disable_validation = false;
RNP_LOG_KEY_PKT("failed to add key %s", tkey->key);
return false;
}
if (!addkey) {
keyring->disable_validation = false;
RNP_LOG("Failed to add key to key store.");
return false;
}
/* add subkeys */
for (auto &subkey : tkey->subkeys) {
if (!rnp_key_store_add_transferable_subkey(keyring, &subkey, addkey)) {
RNP_LOG("Failed to add subkey to key store.");
keyring->disable_validation = false;
goto error;
}
}
/* now validate/refresh the whole key with subkeys */
keyring->disable_validation = false;
addkey->revalidate(*keyring);
return true;
error:
/* during key addition all fields are copied so will be cleaned below */
rnp_key_store_remove_key(keyring, addkey, false);
return false;
}
rnp_result_t
rnp_key_store_pgp_read_key_from_src(rnp_key_store_t &keyring,
pgp_source_t & src,
bool skiperrors)
{
pgp_transferable_key_t key;
rnp_result_t ret = process_pgp_key_auto(src, key, true, skiperrors);
if (ret && (!skiperrors || (ret != RNP_ERROR_BAD_FORMAT))) {
return ret;
}
/* check whether we have primary key */
if (key.key.tag != PGP_PKT_RESERVED) {
return rnp_key_store_add_transferable_key(&keyring, &key) ? RNP_SUCCESS :
RNP_ERROR_BAD_STATE;
}
/* we just skipped some unexpected packets and read nothing */
if (key.subkeys.empty()) {
return RNP_SUCCESS;
}
return rnp_key_store_add_transferable_subkey(&keyring, &key.subkeys.front(), NULL) ?
RNP_SUCCESS :
RNP_ERROR_BAD_STATE;
}
rnp_result_t
rnp_key_store_pgp_read_from_src(rnp_key_store_t *keyring, pgp_source_t *src, bool skiperrors)
{
/* check whether we have transferable subkey in source */
if (is_subkey_pkt(stream_pkt_type(*src))) {
pgp_transferable_subkey_t tskey;
rnp_result_t ret = process_pgp_subkey(*src, tskey, skiperrors);
if (ret) {
return ret;
}
return rnp_key_store_add_transferable_subkey(keyring, &tskey, NULL) ?
RNP_SUCCESS :
RNP_ERROR_BAD_STATE;
}
/* process armored or raw transferable key packets sequence(s) */
try {
pgp_key_sequence_t keys;
rnp_result_t ret = process_pgp_keys(*src, keys, skiperrors);
if (ret) {
return ret;
}
for (auto &key : keys.keys) {
if (!rnp_key_store_add_transferable_key(keyring, &key)) {
return RNP_ERROR_BAD_STATE;
}
}
return RNP_SUCCESS;
} catch (const std::exception &e) {
RNP_LOG("%s", e.what());
return RNP_ERROR_BAD_PARAMETERS;
}
}
std::vector<uint8_t>
rnp_key_to_vec(const pgp_key_t &key)
{
rnp::MemoryDest dst;
key.write(dst.dst());
return dst.to_vector();
}
static bool
do_write(rnp_key_store_t *key_store, pgp_dest_t *dst, bool secret)
{
for (auto &key : key_store->keys) {
if (key.is_secret() != secret) {
continue;
}
// skip subkeys, they are written below (orphans are ignored)
if (!key.is_primary()) {
continue;
}
if (key.format != PGP_KEY_STORE_GPG) {
RNP_LOG("incorrect format (conversions not supported): %d", key.format);
return false;
}
key.write(*dst);
if (dst->werr) {
return false;
}
for (auto &sfp : key.subkey_fps()) {
pgp_key_t *subkey = rnp_key_store_get_key_by_fpr(key_store, sfp);
if (!subkey) {
RNP_LOG("Missing subkey");
continue;
}
subkey->write(*dst);
if (dst->werr) {
return false;
}
}
}
return true;
}
bool
rnp_key_store_pgp_write_to_dst(rnp_key_store_t *key_store, pgp_dest_t *dst)
{
// two separate passes (public keys, then secret keys)
return do_write(key_store, dst, false) && do_write(key_store, dst, true);
}
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