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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/BasicOperator.h"
#include <vector>
#include "gpg/function/GpgKeyGetter.h"
GpgFrontend::GpgError GpgFrontend::BasicOperator::Encrypt(
KeyListPtr keys, GpgFrontend::BypeArrayRef in_buffer,
GpgFrontend::ByteArrayPtr& out_buffer, GpgFrontend::GpgEncrResult& result) {
// gpgme_encrypt_result_t e_result;
gpgme_key_t recipients[keys->size() + 1];
int index = 0;
for (const auto& key : *keys) recipients[index++] = gpgme_key_t(key);
// Last entry data_in array has to be nullptr
recipients[keys->size()] = nullptr;
GpgData data_in(in_buffer.data(), in_buffer.size()), data_out;
gpgme_error_t err = check_gpg_error(gpgme_op_encrypt(
ctx, recipients, GPGME_ENCRYPT_ALWAYS_TRUST, data_in, data_out));
auto temp_data_out = data_out.Read2Buffer();
std::swap(temp_data_out, out_buffer);
auto temp_result = _new_result(gpgme_op_encrypt_result(ctx));
std::swap(result, temp_result);
return err;
}
GpgFrontend::GpgError GpgFrontend::BasicOperator::Decrypt(
BypeArrayRef in_buffer, GpgFrontend::ByteArrayPtr& out_buffer,
GpgFrontend::GpgDecrResult& result) {
gpgme_error_t err;
GpgData data_in(in_buffer.data(), in_buffer.size()), data_out;
err = check_gpg_error(gpgme_op_decrypt(ctx, data_in, data_out));
auto temp_data_out = data_out.Read2Buffer();
std::swap(temp_data_out, out_buffer);
auto temp_result = _new_result(gpgme_op_decrypt_result(ctx));
std::swap(result, temp_result);
return err;
}
GpgFrontend::GpgError GpgFrontend::BasicOperator::Verify(
BypeArrayRef& in_buffer, ByteArrayPtr& sig_buffer,
GpgVerifyResult& result) const {
gpgme_error_t err;
GpgData data_in(in_buffer.data(), in_buffer.size());
GpgData data_out;
if (sig_buffer != nullptr) {
GpgData sig_data(sig_buffer->data(), sig_buffer->size());
err = check_gpg_error(gpgme_op_verify(ctx, sig_data, data_in, nullptr));
} else
err = check_gpg_error(gpgme_op_verify(ctx, data_in, nullptr, data_out));
auto temp_result = _new_result(gpgme_op_verify_result(ctx));
std::swap(result, temp_result);
return err;
}
GpgFrontend::GpgError GpgFrontend::BasicOperator::Sign(KeyListPtr keys,
BypeArrayRef in_buffer,
ByteArrayPtr& out_buffer,
gpgme_sig_mode_t mode,
GpgSignResult& result) {
gpgme_error_t err;
// Set Singers of this opera
SetSigners(*keys);
GpgData data_in(in_buffer.data(), in_buffer.size()), data_out;
/**
`GPGME_SIG_MODE_NORMAL'
A normal signature is made, the output includes the plaintext
and the signature.
`GPGME_SIG_MODE_DETACH'
A detached signature is made.
`GPGME_SIG_MODE_CLEAR'
A clear text signature is made. The ASCII armor and text
mode settings of the context are ignored.
*/
err = check_gpg_error(gpgme_op_sign(ctx, data_in, data_out, mode));
auto temp_data_out = data_out.Read2Buffer();
std::swap(temp_data_out, out_buffer);
auto temp_result = _new_result(gpgme_op_sign_result(ctx));
std::swap(result, temp_result);
return err;
}
gpgme_error_t GpgFrontend::BasicOperator::DecryptVerify(
BypeArrayRef in_buffer, ByteArrayPtr& out_buffer,
GpgDecrResult& decrypt_result, GpgVerifyResult& verify_result) {
gpgme_error_t err;
GpgData data_in(in_buffer.data(), in_buffer.size()), data_out;
err = check_gpg_error(gpgme_op_decrypt_verify(ctx, data_in, data_out));
auto temp_data_out = data_out.Read2Buffer();
std::swap(temp_data_out, out_buffer);
auto temp_decr_result = _new_result(gpgme_op_decrypt_result(ctx));
std::swap(decrypt_result, temp_decr_result);
auto temp_verify_result = _new_result(gpgme_op_verify_result(ctx));
std::swap(verify_result, temp_verify_result);
return err;
}
gpgme_error_t GpgFrontend::BasicOperator::EncryptSign(
KeyListPtr keys, KeyListPtr signers, BypeArrayRef in_buffer,
ByteArrayPtr& out_buffer, GpgEncrResult& encr_result,
GpgSignResult& sign_result) {
gpgme_error_t err;
SetSigners(*signers);
// gpgme_encrypt_result_t e_result;
gpgme_key_t recipients[keys->size() + 1];
// set key for user
int index = 0;
for (const auto& key : *keys) recipients[index++] = gpgme_key_t(key);
// Last entry dataIn array has to be nullptr
recipients[keys->size()] = nullptr;
GpgData data_in(in_buffer.data(), in_buffer.size()), data_out;
// If the last parameter isnt 0, a private copy of data is made
err = check_gpg_error(gpgme_op_encrypt_sign(
ctx, recipients, GPGME_ENCRYPT_ALWAYS_TRUST, data_in, data_out));
auto temp_data_out = data_out.Read2Buffer();
std::swap(temp_data_out, out_buffer);
auto temp_encr_result = _new_result(gpgme_op_encrypt_result(ctx));
swap(encr_result, temp_encr_result);
auto temp_sign_result = _new_result(gpgme_op_sign_result(ctx));
swap(sign_result, temp_sign_result);
return err;
}
void GpgFrontend::BasicOperator::SetSigners(KeyArgsList& keys) {
gpgme_signers_clear(ctx);
for (const GpgKey& key : keys) {
DLOG(INFO) << "key" << key.fpr();
if (key.CanSignActual()) {
DLOG(INFO) << "signer";
auto error = gpgme_signers_add(ctx, gpgme_key_t(key));
check_gpg_error(error);
}
}
if (keys.size() != gpgme_signers_count(ctx))
DLOG(INFO) << "No All Signers Added";
}
std::unique_ptr<GpgFrontend::KeyArgsList>
GpgFrontend::BasicOperator::GetSigners() {
auto count = gpgme_signers_count(ctx);
auto signers = std::make_unique<std::vector<GpgKey>>();
for (auto i = 0u; i < count; i++) {
auto key = GpgKey(gpgme_signers_enum(ctx, i));
signers->push_back(GpgKey(std::move(key)));
}
return signers;
}
gpg_error_t GpgFrontend::BasicOperator::EncryptSymmetric(
GpgFrontend::ByteArray& in_buffer, GpgFrontend::ByteArrayPtr& out_buffer,
GpgFrontend::GpgEncrResult& result) {
GpgData data_in(in_buffer.data(), in_buffer.size()), data_out;
gpgme_error_t err = check_gpg_error(gpgme_op_encrypt(
ctx, nullptr, GPGME_ENCRYPT_SYMMETRIC, data_in, data_out));
auto temp_data_out = data_out.Read2Buffer();
std::swap(temp_data_out, out_buffer);
// TODO(Saturneric): maybe a bug of gpgme
if (gpgme_err_code(err) == GPG_ERR_NO_ERROR) {
auto temp_result = _new_result(gpgme_op_encrypt_result(ctx));
std::swap(result, temp_result);
}
return err;
}
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