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/**
* Copyright (C) 2021 Saturneric
*
* This file is part of GpgFrontend.
*
* GpgFrontend is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* GpgFrontend is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with GpgFrontend. If not, see <https://www.gnu.org/licenses/>.
*
* The initial version of the source code is inherited from
* the gpg4usb project, which is under GPL-3.0-or-later.
*
* All the source code of GpgFrontend was modified and released by
* Saturneric<[email protected]> starting on May 12, 2021.
*
* SPDX-License-Identifier: GPL-3.0-or-later
*
*/
#include "GpgKeyGetter.h"
#include <gpg-error.h>
#include <mutex>
#include <shared_mutex>
#include <utility>
#include "GpgConstants.h"
#include "easylogging++.h"
#include "model/GpgKey.h"
GpgFrontend::GpgKeyGetter::GpgKeyGetter(int channel)
: SingletonFunctionObject<GpgKeyGetter>(channel) {
LOG(INFO) << "called"
<< "channel:" << channel;
}
GpgFrontend::GpgKey GpgFrontend::GpgKeyGetter::GetKey(const std::string& fpr) {
LOG(INFO) << "called";
// find in cache first
{
std::lock_guard<std::mutex> lock(keys_cache_mutex_);
if (keys_cache_.find(fpr) != keys_cache_.end()) {
std::lock_guard<std::mutex> lock(ctx_mutex_);
return keys_cache_[fpr].Copy();
}
}
gpgme_key_t _p_key = nullptr;
gpgme_get_key(ctx_, fpr.c_str(), &_p_key, 1);
if (_p_key == nullptr) {
DLOG(WARNING) << "GpgKeyGetter GetKey Private _p_key Null fpr" << fpr;
return GetPubkey(fpr);
} else {
return GpgKey(std::move(_p_key));
}
}
GpgFrontend::GpgKey GpgFrontend::GpgKeyGetter::GetPubkey(
const std::string& fpr) {
// find in cache first
{
std::lock_guard<std::mutex> lock(keys_cache_mutex_);
if (keys_cache_.find(fpr) != keys_cache_.end()) {
std::lock_guard<std::mutex> lock(ctx_mutex_);
return keys_cache_[fpr].Copy();
}
}
gpgme_key_t _p_key = nullptr;
gpgme_get_key(ctx_, fpr.c_str(), &_p_key, 0);
if (_p_key == nullptr)
DLOG(WARNING) << "GpgKeyGetter GetKey _p_key Null" << fpr;
return GpgKey(std::move(_p_key));
}
GpgFrontend::KeyLinkListPtr GpgFrontend::GpgKeyGetter::FetchKey() {
// get the lock
std::lock_guard<std::mutex> lock(keys_cache_mutex_);
LOG(INFO) << "GpgKeyGetter FetchKey"
<< "channel id:" << GetChannel();
auto keys_list = std::make_unique<GpgKeyLinkList>();
LOG(INFO) << "cache address:" << &keys_cache_ << "object address" << this;
for (const auto& [key, value] : keys_cache_) {
LOG(INFO) << "FetchKey Id:" << value.GetId();
keys_list->push_back(value.Copy());
}
LOG(INFO) << "ended";
return keys_list;
}
void GpgFrontend::GpgKeyGetter::FlushKeyCache() {
LOG(INFO) << "called"
<< "channel id: " << GetChannel();
// clear the keys cache
keys_cache_.clear();
// init
GpgError err = gpgme_op_keylist_start(ctx_, nullptr, 0);
// for debug
assert(check_gpg_error_2_err_code(err) == GPG_ERR_NO_ERROR);
// return when error
if (check_gpg_error_2_err_code(err) != GPG_ERR_NO_ERROR) return;
{
// get the lock
std::lock_guard<std::mutex> lock(keys_cache_mutex_);
gpgme_key_t key;
while ((err = gpgme_op_keylist_next(ctx_, &key)) == GPG_ERR_NO_ERROR) {
LOG(INFO) << "LoadKey Fpr:" << key->fpr << "Id:" << key->subkeys->keyid;
keys_cache_.insert({key->subkeys->keyid, GpgKey(std::move(key))});
}
}
LOG(INFO) << "cache address:" << &keys_cache_ << "object address" << this;
// for debug
assert(check_gpg_error_2_err_code(err, GPG_ERR_EOF) == GPG_ERR_EOF);
err = gpgme_op_keylist_end(ctx_);
assert(check_gpg_error_2_err_code(err, GPG_ERR_EOF) == GPG_ERR_NO_ERROR);
LOG(INFO) << "ended";
}
GpgFrontend::KeyListPtr GpgFrontend::GpgKeyGetter::GetKeys(
const KeyIdArgsListPtr& ids) {
auto keys = std::make_unique<KeyArgsList>();
for (const auto& id : *ids) keys->push_back(GetKey(id));
return keys;
}
GpgFrontend::KeyLinkListPtr GpgFrontend::GpgKeyGetter::GetKeysCopy(
const GpgFrontend::KeyLinkListPtr& keys) {
// get the lock
std::lock_guard<std::mutex> lock(ctx_mutex_);
auto keys_copy = std::make_unique<GpgKeyLinkList>();
for (const auto& key : *keys) keys_copy->push_back(key.Copy());
return keys_copy;
}
GpgFrontend::KeyListPtr GpgFrontend::GpgKeyGetter::GetKeysCopy(
const GpgFrontend::KeyListPtr& keys) {
// get the lock
std::lock_guard<std::mutex> lock(ctx_mutex_);
auto keys_copy = std::make_unique<KeyArgsList>();
for (const auto& key : *keys) keys_copy->push_back(key.Copy());
return keys_copy;
}
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