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/**
* 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.
*
* Foobar 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 Foobar. If not, see <https://www.gnu.org/licenses/>.
*
* The initial version of the source code is inherited from gpg4usb-team.
* Their source code version also complies with GNU General Public License.
*
* The source code version of this software was modified and released
* by Saturneric<[email protected]> starting on May 12, 2021.
*
*/
#include "gpg/GpgContext.h"
#include <gpg-error.h>
#include <gpgme.h>
#include <functional>
#include <string>
#include <utility>
#include "GpgConstants.h"
#ifdef _WIN32
#include <windows.h>
#endif
namespace GpgFrontend {
/**
* Constructor
* Set up gpgme-context, set paths to app-run path
*/
GpgContext::GpgContext(const GpgContextInitArgs& args) {
static bool _first = true;
if (_first) {
/* Initialize the locale environment. */
LOG(INFO) << "locale" << setlocale(LC_CTYPE, nullptr);
gpgme_check_version(nullptr);
gpgme_set_locale(nullptr, LC_CTYPE, setlocale(LC_CTYPE, nullptr));
#ifdef LC_MESSAGES
gpgme_set_locale(nullptr, LC_MESSAGES, setlocale(LC_MESSAGES, nullptr));
#endif
_first = false;
}
gpgme_ctx_t _p_ctx;
check_gpg_error(gpgme_new(&_p_ctx));
_ctx_ref = CtxRefHandler(_p_ctx);
if (args.gpg_alone) {
info.AppPath = args.gpg_path;
auto err = gpgme_ctx_set_engine_info(_ctx_ref.get(), GPGME_PROTOCOL_OpenPGP,
info.AppPath.c_str(),
info.DatabasePath.c_str());
assert(check_gpg_error_2_err_code(err) == GPG_ERR_NO_ERROR);
}
auto engine_info = gpgme_ctx_get_engine_info(*this);
// Check ENV before running
bool check_pass = false, find_openpgp = false, find_gpgconf = false,
find_assuan = false, find_cms = false;
while (engine_info != nullptr) {
if (engine_info->protocol == GPGME_PROTOCOL_GPGCONF &&
strcmp(engine_info->version, "1.0.0") != 0)
find_gpgconf = true;
if (engine_info->protocol == GPGME_PROTOCOL_OpenPGP &&
strcmp(engine_info->version, "1.0.0") != 0) {
find_openpgp = true;
info.AppPath = engine_info->file_name;
info.DatabasePath = "default", info.GnupgVersion = engine_info->version;
DLOG(INFO) << "OpenPGP"
<< std::string(engine_info->file_name == nullptr
? "null"
: engine_info->file_name)
<< std::string(engine_info->home_dir == nullptr
? "null"
: engine_info->home_dir);
}
if (engine_info->protocol == GPGME_PROTOCOL_CMS &&
strcmp(engine_info->version, "1.0.0") != 0)
find_cms = true;
if (engine_info->protocol == GPGME_PROTOCOL_ASSUAN) find_assuan = true;
engine_info = engine_info->next;
}
if (find_gpgconf && find_openpgp && find_cms && find_assuan)
check_pass = true;
if (!check_pass) {
this->good_ = false;
return;
} else {
LOG(INFO) << "GnuPG version" << info.GnupgVersion;
// Set Independent Database
if (args.independent_database) {
info.DatabasePath = args.db_path;
LOG(INFO) << "gpg custom database path" << info.DatabasePath;
auto err = gpgme_ctx_set_engine_info(
_ctx_ref.get(), GPGME_PROTOCOL_OpenPGP, info.AppPath.c_str(),
info.DatabasePath.c_str());
assert(check_gpg_error_2_err_code(err) == GPG_ERR_NO_ERROR);
}
/** Setting the output type must be done at the beginning */
/** think this means ascii-armor --> ? */
gpgme_set_armor(*this, 1);
// Speed up loading process
gpgme_set_offline(*this, 1);
if (info.GnupgVersion >= "2.0.0") {
LOG(INFO) << "Using GnuPG 2.x";
check_gpg_error(gpgme_set_keylist_mode(
*this, GPGME_KEYLIST_MODE_LOCAL | GPGME_KEYLIST_MODE_WITH_SECRET |
GPGME_KEYLIST_MODE_SIGS |
GPGME_KEYLIST_MODE_SIG_NOTATIONS |
GPGME_KEYLIST_MODE_WITH_TOFU));
} else {
LOG(INFO) << "Using GnuPG 1.x";
check_gpg_error(gpgme_set_keylist_mode(
*this, GPGME_KEYLIST_MODE_LOCAL | GPGME_KEYLIST_MODE_SIGS |
GPGME_KEYLIST_MODE_SIG_NOTATIONS |
GPGME_KEYLIST_MODE_WITH_TOFU));
}
good_ = true;
}
}
bool GpgContext::good() const { return good_; }
void GpgContext::SetPassphraseCb(decltype(test_passphrase_cb) cb) const {
gpgme_set_passphrase_cb(*this, cb, nullptr);
}
std::string GpgContext::getGpgmeVersion() {
return {gpgme_check_version(nullptr)};
}
} // namespace GpgFrontend
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