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/**
* Copyright (C) 2021 Saturneric <[email protected]>
*
* 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 "GpgUtils.h"
#include <boost/algorithm/string.hpp>
namespace GpgFrontend {
static inline void Ltrim(std::string& s) {
s.erase(s.begin(), std::find_if(s.begin(), s.end(), [](unsigned char ch) {
return !std::isspace(ch);
}));
}
static inline void Rtrim(std::string& s) {
s.erase(std::find_if(s.rbegin(), s.rend(),
[](unsigned char ch) { return !std::isspace(ch); })
.base(),
s.end());
}
static inline auto Trim(std::string& s) -> std::string {
Ltrim(s);
Rtrim(s);
return s;
}
auto GetGpgmeErrorString(size_t buffer_size, gpgme_error_t err) -> std::string {
std::vector<char> buffer(buffer_size);
gpgme_error_t ret = gpgme_strerror_r(err, buffer.data(), buffer.size());
if (ret == ERANGE && buffer_size < 1024) {
return GetGpgmeErrorString(buffer_size * 2, err);
}
return std::string(buffer.data());
}
auto GetGpgmeErrorString(gpgme_error_t err) -> std::string {
return GetGpgmeErrorString(64, err);
}
auto CheckGpgError(GpgError err) -> GpgError {
auto err_code = gpg_err_code(err);
if (err_code != GPG_ERR_NO_ERROR) {
SPDLOG_ERROR(
"gpg operation failed [error code: {}], source: {} description: {}",
err_code, gpgme_strsource(err), GetGpgmeErrorString(err));
}
return err_code;
}
auto CheckGpgError2ErrCode(GpgError err, GpgError predict) -> GpgErrorCode {
auto err_code = gpg_err_code(err);
if (err_code != gpg_err_code(predict)) {
if (err_code == GPG_ERR_NO_ERROR) {
SPDLOG_WARN("[Warning {}] Source: {} description: {} predict: {}",
gpg_err_code(err), gpgme_strsource(err),
GetGpgmeErrorString(err), GetGpgmeErrorString(predict));
} else {
SPDLOG_ERROR("[Error {}] Source: {} description: {} predict: {}",
gpg_err_code(err), gpgme_strsource(err),
GetGpgmeErrorString(err), GetGpgmeErrorString(predict));
}
}
return err_code;
}
auto DescribeGpgErrCode(GpgError err) -> GpgErrorDesc {
return {gpgme_strsource(err), GetGpgmeErrorString(err)};
}
auto CheckGpgError(GpgError err, const std::string& /*comment*/) -> GpgError {
if (gpg_err_code(err) != GPG_ERR_NO_ERROR) {
SPDLOG_WARN("[Error {}] Source: {} description: {}", gpg_err_code(err),
gpgme_strsource(err), GetGpgmeErrorString(err));
}
return err;
}
auto TextIsSigned(BypeArrayRef text) -> int {
using boost::algorithm::ends_with;
using boost::algorithm::starts_with;
auto trim_text = Trim(text);
if (starts_with(trim_text, PGP_SIGNED_BEGIN) &&
ends_with(trim_text, PGP_SIGNED_END)) {
return 2;
}
if (text.find(PGP_SIGNED_BEGIN) != std::string::npos &&
text.find(PGP_SIGNED_END) != std::string::npos) {
return 1;
}
return 0;
}
auto SetExtensionOfOutputFile(std::filesystem::path path, GpgOperation opera,
bool ascii) -> std::filesystem::path {
std::string extension;
if (ascii) {
switch (opera) {
case kENCRYPT:
case kSIGN:
case kENCRYPT_SIGN:
extension = path.extension().string() + ".asc";
break;
default:
break;
}
} else {
switch (opera) {
case kENCRYPT:
case kENCRYPT_SIGN:
extension = path.extension().string() + ".gpg";
break;
case kSIGN:
extension = path.extension().string() + ".sig";
break;
default:
break;
}
}
return path.replace_extension(extension);
}
auto SetExtensionOfOutputFileForArchive(std::filesystem::path path,
GpgOperation opera, bool ascii)
-> std::filesystem::path {
std::string extension;
if (ascii) {
switch (opera) {
case kENCRYPT:
case kENCRYPT_SIGN:
extension += ".tar.asc";
return path.replace_extension(extension);
case kDECRYPT:
case kDECRYPT_VERIFY:
return path.parent_path();
default:
break;
}
} else {
switch (opera) {
case kENCRYPT:
case kENCRYPT_SIGN:
extension += ".tar.gpg";
return path.replace_extension(extension);
case kDECRYPT:
case kDECRYPT_VERIFY:
return path.parent_path();
default:
break;
}
}
}
} // namespace GpgFrontend
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