1 files changed, 206 insertions, 0 deletions
diff --git a/src/gpg/function/BasicOperator.cpp b/src/gpg/function/BasicOperator.cpp
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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 = GpgEncrResult(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 = GpgDecrResult(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());
+
+  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_in));
+
+  auto temp_result = GpgVerifyResult(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 = GpgSignResult(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 = GpgDecrResult(gpgme_op_decrypt_result(ctx));
+  std::swap(decrypt_result, temp_decr_result);
+
+  auto temp_verify_result = GpgVerifyResult(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 = GpgEncrResult(gpgme_op_encrypt_result(ctx));
+  swap(encr_result, temp_encr_result);
+  auto temp_sign_result = GpgSignResult(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) {
+    if (key.CanSignActual()) {
+      auto gpgmeError = gpgme_signers_add(ctx, gpgme_key_t(key));
+      check_gpg_error(gpgmeError);
+    }
+  }
+  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;
+}