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/*
* Copyright (c) 2017, [Ribose Inc](https://www.ribose.com).
* 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.
*
* 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 OWNER 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 <assert.h>
#include <string.h>
#include "key-provider.h"
#include "pgp-key.h"
#include "fingerprint.h"
#include "types.h"
#include "utils.h"
#include <rekey/rnp_key_store.h>
bool
rnp_key_matches_search(const pgp_key_t *key, const pgp_key_search_t *search)
{
if (!key) {
return false;
}
switch (search->type) {
case PGP_KEY_SEARCH_KEYID:
return (key->keyid() == search->by.keyid) || (search->by.keyid == pgp_key_id_t({}));
case PGP_KEY_SEARCH_FINGERPRINT:
return key->fp() == search->by.fingerprint;
case PGP_KEY_SEARCH_GRIP:
return key->grip() == search->by.grip;
case PGP_KEY_SEARCH_USERID:
if (key->has_uid(search->by.userid)) {
return true;
}
break;
default:
assert(false);
break;
}
return false;
}
pgp_key_t *
pgp_request_key(const pgp_key_provider_t *provider, const pgp_key_request_ctx_t *ctx)
{
pgp_key_t *key = NULL;
if (!provider || !provider->callback || !ctx) {
return NULL;
}
if (!(key = provider->callback(ctx, provider->userdata))) {
return NULL;
}
// confirm that the key actually matches the search criteria
if (!rnp_key_matches_search(key, &ctx->search) && key->is_secret() == ctx->secret) {
return NULL;
}
return key;
}
pgp_key_t *
rnp_key_provider_key_ptr_list(const pgp_key_request_ctx_t *ctx, void *userdata)
{
std::vector<pgp_key_t *> *key_list = (std::vector<pgp_key_t *> *) userdata;
for (auto key : *key_list) {
if (rnp_key_matches_search(key, &ctx->search) && (key->is_secret() == ctx->secret)) {
return key;
}
}
return NULL;
}
pgp_key_t *
rnp_key_provider_chained(const pgp_key_request_ctx_t *ctx, void *userdata)
{
for (pgp_key_provider_t **pprovider = (pgp_key_provider_t **) userdata;
pprovider && *pprovider;
pprovider++) {
pgp_key_provider_t *provider = *pprovider;
pgp_key_t * key = NULL;
if ((key = provider->callback(ctx, provider->userdata))) {
return key;
}
}
return NULL;
}
pgp_key_t *
rnp_key_provider_store(const pgp_key_request_ctx_t *ctx, void *userdata)
{
rnp_key_store_t *ks = (rnp_key_store_t *) userdata;
for (pgp_key_t *key = rnp_key_store_search(ks, &ctx->search, NULL); key;
key = rnp_key_store_search(ks, &ctx->search, key)) {
if (key->is_secret() == ctx->secret) {
return key;
}
}
return NULL;
}
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