<refactor>(src): rename the gpg directory to core

1 files changed, 225 insertions, 0 deletions

diff --git a/src/core/GpgGenKeyInfo.cpp b/src/core/GpgGenKeyInfo.cpp
new file mode 100644
index 00000000..6ca83c96
--- /dev/null
+++ b/src/core/GpgGenKeyInfo.cpp
@@ -0,0 +1,225 @@
+/**
+ * Copyright (C) 2021 Saturneric
+ *
+ * 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 "core/GpgGenKeyInfo.h"
+
+#include <boost/date_time/gregorian/greg_date.hpp>
+#include <boost/date_time/gregorian/greg_duration.hpp>
+#include <boost/date_time/gregorian/gregorian_types.hpp>
+#include <string>
+#include <vector>
+
+void GpgFrontend::GenKeyInfo::SetAlgo(const std::string &m_algo) {
+  LOG(INFO) << "set algo" << m_algo;
+  // Check algo if supported
+  std::string algo_args = std::string(m_algo);
+  boost::algorithm::to_upper(algo_args);
+  if (standalone_) {
+    if (!subkey_) {
+      auto support_algo = GetSupportedKeyAlgoStandalone();
+      auto it = std::find(support_algo.begin(), support_algo.end(), algo_args);
+      // Algo Not Supported
+      if (it == support_algo.end()) return;
+    } else {
+      auto support_algo = GetSupportedSubkeyAlgoStandalone();
+      auto it = std::find(support_algo.begin(), support_algo.end(), algo_args);
+      // Algo Not Supported
+      if (it == support_algo.end()) return;
+    }
+  } else {
+    if (!subkey_) {
+      auto support_algo = GetSupportedKeyAlgo();
+      auto it = std::find(support_algo.begin(), support_algo.end(), algo_args);
+      // Algo Not Supported
+      if (it == support_algo.end()) return;
+    } else {
+      auto support_algo = GetSupportedSubkeyAlgo();
+      auto it = std::find(support_algo.begin(), support_algo.end(), algo_args);
+      // Algo Not Supported
+      if (it == support_algo.end()) return;
+    }
+  }
+
+  // reset all options
+  reset_options();
+
+  if (!this->subkey_) {
+    this->SetAllowCertification(true);
+  } else {
+    this->SetAllowCertification(false);
+  }
+
+  this->allow_change_certification_ = false;
+
+  if (!standalone_) boost::algorithm::to_lower(algo_args);
+
+  if (algo_args == "rsa") {
+    /**
+     * RSA is the world’s premier asymmetric cryptographic algorithm,
+     * and is built on the difficulty of factoring extremely large composites.
+     * GnuPG supports RSA with key sizes of between 1024 and 4096 bits.
+     */
+    suggest_min_key_size_ = 1024;
+    suggest_max_key_size_ = 4096;
+    suggest_size_addition_step_ = 1024;
+    SetKeyLength(2048);
+
+  } else if (algo_args == "dsa") {
+    /**
+     * Algorithm (DSA) as a government standard for digital signatures.
+     * Originally, it supported key lengths between 512 and 1024 bits.
+     * Recently, NIST has declared 512-bit keys obsolete:
+     * now, DSA is available in 1024, 2048 and 3072-bit lengths.
+     */
+    SetAllowEncryption(false);
+    allow_change_encryption_ = false;
+
+    suggest_min_key_size_ = 1024;
+    suggest_max_key_size_ = 3072;
+    suggest_size_addition_step_ = 1024;
+    SetKeyLength(2048);
+
+  } else if (algo_args == "ed25519") {
+    /**
+     * GnuPG supports the Elgamal asymmetric encryption algorithm in key lengths
+     * ranging from 1024 to 4096 bits.
+     */
+    SetAllowEncryption(false);
+    allow_change_encryption_ = false;
+
+    suggest_min_key_size_ = -1;
+    suggest_max_key_size_ = -1;
+    suggest_size_addition_step_ = -1;
+    SetKeyLength(-1);
+  } else if (algo_args == "elg") {
+    /**
+     * GnuPG supports the Elgamal asymmetric encryption algorithm in key lengths
+     * ranging from 1024 to 4096 bits.
+     */
+    SetAllowAuthentication(false);
+    allow_change_authentication_ = false;
+
+    SetAllowSigning(false);
+    allow_change_signing_ = false;
+
+    suggest_min_key_size_ = 1024;
+    suggest_max_key_size_ = 4096;
+    suggest_size_addition_step_ = 1024;
+    SetKeyLength(2048);
+  }
+  this->algo_ = algo_args;
+}
+
+void GpgFrontend::GenKeyInfo::reset_options() {
+  allow_change_encryption_ = true;
+  SetAllowEncryption(true);
+
+  allow_change_certification_ = true;
+  SetAllowCertification(true);
+
+  allow_change_signing_ = true;
+  SetAllowSigning(true);
+
+  allow_change_authentication_ = true;
+  SetAllowAuthentication(true);
+
+  passphrase_.clear();
+}
+
+std::string GpgFrontend::GenKeyInfo::GetKeySizeStr() const {
+  if (key_size_ > 0) {
+    return std::to_string(key_size_);
+  } else {
+    return {};
+  }
+}
+
+void GpgFrontend::GenKeyInfo::SetKeyLength(int m_key_size) {
+  if (m_key_size < suggest_min_key_size_ ||
+      m_key_size > suggest_max_key_size_) {
+    return;
+  }
+  GenKeyInfo::key_size_ = m_key_size;
+}
+
+void GpgFrontend::GenKeyInfo::SetExpireTime(
+    const boost::posix_time::ptime &m_expired) {
+  using namespace boost::gregorian;
+  if (!IsNonExpired()) {
+    GenKeyInfo::expired_ = m_expired;
+  }
+}
+
+void GpgFrontend::GenKeyInfo::SetNonExpired(bool m_non_expired) {
+  using namespace boost::posix_time;
+  if (!m_non_expired) this->expired_ = from_time_t(0);
+  GenKeyInfo::non_expired_ = m_non_expired;
+}
+
+void GpgFrontend::GenKeyInfo::SetAllowEncryption(bool m_allow_encryption) {
+  if (allow_change_encryption_)
+    GenKeyInfo::allow_encryption_ = m_allow_encryption;
+}
+
+void GpgFrontend::GenKeyInfo::SetAllowCertification(
+    bool m_allow_certification) {
+  if (allow_change_certification_)
+    GenKeyInfo::allow_certification_ = m_allow_certification;
+}
+
+GpgFrontend::GenKeyInfo::GenKeyInfo(bool m_is_sub_key, bool m_standalone)
+    : standalone_(m_standalone), subkey_(m_is_sub_key) {
+  SetAlgo("rsa");
+}
+
+const std::vector<std::string> &GpgFrontend::GenKeyInfo::GetSupportedKeyAlgo() {
+  static const std::vector<std::string> support_key_algo = {"RSA", "DSA",
+                                                            "ED25519"};
+  return support_key_algo;
+}
+
+const std::vector<std::string>
+    &GpgFrontend::GenKeyInfo::GetSupportedSubkeyAlgo() {
+  static const std::vector<std::string> support_subkey_algo = {"RSA", "DSA",
+                                                               "ED25519"};
+  return support_subkey_algo;
+}
+
+const std::vector<std::string>
+    &GpgFrontend::GenKeyInfo::GetSupportedKeyAlgoStandalone() {
+  static const std::vector<std::string> support_subkey_algo_standalone = {
+      "RSA", "DSA"};
+  return support_subkey_algo_standalone;
+}
+
+const std::vector<std::string>
+    &GpgFrontend::GenKeyInfo::GetSupportedSubkeyAlgoStandalone() {
+  static const std::vector<std::string> support_subkey_algo_standalone = {
+      "RSA", "DSA", "ELG-E"};
+  return support_subkey_algo_standalone;
+}