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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/function/GpgFileOpera.h"
#include "GpgConstants.h"
#include "gpg/function/BasicOperator.h"
#include <boost/process/detail/config.hpp>
#include <filesystem>
#include <iterator>
#include <memory>
#include <string>
std::string read_all_data_in_file(const std::string &path) {
using namespace std::filesystem;
class path file_info(path.c_str());
if (!exists(file_info) || !is_regular_file(path))
throw std::runtime_error("no permission");
std::ifstream in_file;
in_file.open(path, std::ios::in);
if (!in_file.good())
throw std::runtime_error("cannot open file");
std::istreambuf_iterator<char> begin(in_file);
std::istreambuf_iterator<char> end;
std::string in_buffer(begin, end);
in_file.close();
return in_buffer;
}
void write_buufer_to_file(const std::string &path,
const std::string &out_buffer) {
std::ofstream out_file(path);
out_file.open(path.c_str(), std::ios::out);
if (!out_file.good())
throw std::runtime_error("cannot open file");
out_file.write(out_buffer.c_str(), out_buffer.size());
out_file.close();
}
GpgFrontend::GpgError GpgFrontend::GpgFileOpera::EncryptFile(
KeyArgsList &keys, const std::string &path, GpgEncrResult &result) {
std::string in_buffer = read_all_data_in_file(path);
std::unique_ptr<std::string> out_buffer;
auto err =
BasicOperator::GetInstance().Encrypt(keys, in_buffer, out_buffer, result);
assert(check_gpg_error_2_err_code(err) == GPG_ERR_NO_ERROR);
write_buufer_to_file(path + ".asc", *out_buffer);
return err;
}
std::string get_file_extension(const std::string &path) {
// Create a Path object from given string
std::filesystem::path path_obj(path);
// Check if file name in the path object has extension
if (path_obj.has_extension()) {
// Fetch the extension from path object and return
return path_obj.extension().string();
}
// In case of no extension return empty string
return std::string();
}
std::string get_file_name_with_path(const std::string &path) {
// Create a Path object from given string
std::filesystem::path path_obj(path);
// Check if file name in the path object has extension
if (path_obj.has_filename()) {
// Fetch the extension from path object and return
return path_obj.parent_path() / path_obj.filename();
}
// In case of no extension return empty string
throw std::runtime_error("invalid file path");
}
GpgFrontend::GpgError
GpgFrontend::GpgFileOpera::DecryptFile(const std::string &path,
GpgDecrResult &result) {
std::string in_buffer = read_all_data_in_file(path);
std::unique_ptr<std::string> out_buffer;
auto err =
BasicOperator::GetInstance().Decrypt(in_buffer, out_buffer, result);
assert(check_gpg_error_2_err_code(err) == GPG_ERR_NO_ERROR);
std::string out_file_name = get_file_name_with_path(path),
file_extension = get_file_extension(path);
if (!(file_extension == ".asc" || file_extension == ".gpg"))
out_file_name += ".out";
write_buufer_to_file(out_file_name, *out_buffer);
return err;
}
gpgme_error_t GpgFrontend::GpgFileOpera::SignFile(KeyArgsList &keys,
const std::string &path,
GpgSignResult &result) {
auto in_buffer = read_all_data_in_file(path);
std::unique_ptr<std::string> out_buffer;
auto err = BasicOperator::GetInstance().Sign(keys, in_buffer, out_buffer,
GPGME_SIG_MODE_DETACH, result);
assert(check_gpg_error_2_err_code(err) == GPG_ERR_NO_ERROR);
write_buufer_to_file(path + ".sig", *out_buffer);
return err;
}
gpgme_error_t GpgFrontend::GpgFileOpera::VerifyFile(const std::string &path,
GpgVerifyResult &result) {
auto in_buffer = read_all_data_in_file(path);
std::unique_ptr<std::string> sign_buffer = nullptr;
if (get_file_extension(path) == ".gpg") {
auto err =
BasicOperator::GetInstance().Verify(in_buffer, sign_buffer, result);
assert(check_gpg_error_2_err_code(err) == GPG_ERR_NO_ERROR);
return err;
} else {
auto sign_buffer =
std::make_unique<std::string>(read_all_data_in_file(path + ".sig"));
auto err =
BasicOperator::GetInstance().Verify(in_buffer, sign_buffer, result);
return err;
}
}
// TODO
gpg_error_t GpgFrontend::GpgFileOpera::EncryptSignFile(
KeyArgsList &keys, const std::string &path, GpgEncrResult &encr_res,
GpgSignResult &sign_res) {
auto in_buffer = read_all_data_in_file(path);
std::unique_ptr<std::string> out_buffer = nullptr;
// TODO Fill the vector
std::vector<GpgKey> signerKeys;
// TODO dealing with signer keys
auto err = BasicOperator::GetInstance().EncryptSign(
keys, signerKeys, in_buffer, out_buffer, encr_res, sign_res);
assert(check_gpg_error_2_err_code(err) == GPG_ERR_NO_ERROR);
write_buufer_to_file(path + ".gpg", *out_buffer);
return err;
}
gpg_error_t
GpgFrontend::GpgFileOpera::DecryptVerifyFile(const std::string &path,
GpgDecrResult &decr_res,
GpgVerifyResult &verify_res) {
auto in_buffer = read_all_data_in_file(path);
std::unique_ptr<std::string> out_buffer = nullptr;
auto err = BasicOperator::GetInstance().DecryptVerify(in_buffer, out_buffer,
decr_res, verify_res);
assert(check_gpg_error_2_err_code(err) == GPG_ERR_NO_ERROR);
std::string out_file_name = get_file_name_with_path(path),
file_extension = get_file_extension(path);
if (!(file_extension == ".asc" || file_extension == ".gpg"))
out_file_name = path + ".out";
write_buufer_to_file(out_file_name, *out_buffer);
return err;
}
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