1 files changed, 154 insertions, 0 deletions
diff --git a/src/m_email/EMAilHelper.cpp b/src/m_email/EMAilHelper.cpp
new file mode 100644
index 0000000..ff544ab
--- /dev/null
+++ b/src/m_email/EMAilHelper.cpp
@@ -0,0 +1,154 @@
+/**
+ * Copyright (C) 2021-2024 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 "EMailHelper.h"
+
+#include <QRegularExpression>
+
+#include "GFModuleCommonUtils.hpp"
+
+auto IsValidMicalgFormat(const QString& prm_micalg_value) -> bool {
+  QRegularExpression regex("^pgp-(\\w+)$");
+  QRegularExpressionMatch match = regex.match(prm_micalg_value);
+  return match.hasMatch();
+}
+
+auto FormatMailBox(const std::shared_ptr<vmime::mailbox>& m) -> QString {
+  if (!m) return {"Unknown"};
+
+  QString name = Q_SC(m->getName().getConvertedText(vmime::charsets::UTF_8));
+  QString address =
+      Q_SC(m->getEmail().toText().getConvertedText(vmime::charsets::UTF_8));
+
+  if (!name.isEmpty()) {
+    return QString("%1 <%2>").arg(name, address);
+  }
+  return address;
+}
+
+auto ExtractFieldValue(const vmime::shared_ptr<vmime::header>& header,
+                       const QString& field_name) -> QString {
+  auto field = header->getField(field_name.toStdString());
+  if (!field) {
+    FLOG_WARN("cannot get '%1' Field from header", field_name);
+    return {};
+  }
+
+  auto field_value = field->getValue();
+  if (!field_value) {
+    FLOG_WARN("cannot get '%s' Field Value from header", field_name);
+    return {};
+  }
+
+  return Q_SC(field_value->generate());
+}
+
+auto ExtractFieldValueMailBox(const vmime::shared_ptr<vmime::header>& header,
+                              const QString& field_name) -> QString {
+  auto field = header->getField(field_name.toStdString());
+  if (!field) {
+    FLOG_WARN("cannot get '%1' Field from header", field_name);
+    return {};
+  }
+
+  auto field_value = field->getValue<vmime::mailbox>();
+  if (!field_value) {
+    FLOG_WARN("cannot get '%s' Field Value from header", field_name);
+    return {};
+  }
+
+  return FormatMailBox(field_value);
+}
+
+auto ExtractFieldValueAddressList(
+    const vmime::shared_ptr<vmime::header>& header,
+    const QString& field_name) -> QString {
+  auto field = header->getField(field_name.toStdString());
+  if (!field) {
+    FLOG_WARN("cannot get '%1' Field from header", field_name);
+    return {};
+  }
+
+  auto field_value = field->getValue<vmime::addressList>();
+  if (!field_value) {
+    FLOG_WARN("cannot get '%s' Field Value from header", field_name);
+    return {};
+  }
+
+  QStringList mailbox_list_strings;
+  for (const auto& mailbox : field_value->toMailboxList()->getMailboxList()) {
+    QString formatted_mailbox = FormatMailBox(mailbox);
+    mailbox_list_strings.append(formatted_mailbox);
+  }
+
+  return mailbox_list_strings.join(", ");
+}
+
+auto ExtractFieldValueText(const vmime::shared_ptr<vmime::header>& header,
+                           const QString& field_name) -> QString {
+  auto field = header->getField(field_name.toStdString());
+  if (!field) {
+    FLOG_WARN("cannot get '%1' Field from header", field_name);
+    return {};
+  }
+
+  auto field_value = field->getValue<vmime::text>();
+  if (!field_value) {
+    FLOG_WARN("cannot get '%s' Field Value from header", field_name);
+    return {};
+  }
+
+  return Q_SC(field_value->getConvertedText(vmime::charsets::UTF_8));
+}
+
+auto ExtractFieldValueDateTime(const vmime::shared_ptr<vmime::header>& header,
+                               const QString& field_name) -> QDateTime {
+  auto field = header->getField(field_name.toStdString());
+  if (!field) {
+    FLOG_WARN("cannot get '%1' Field from header", field_name);
+    return {};
+  }
+
+  auto field_value = field->getValue<vmime::datetime>();
+  if (!field_value) {
+    FLOG_WARN("cannot get '%s' Field Value from header", field_name);
+    return {};
+  }
+
+  QDate date(field_value->getYear(), field_value->getMonth(),
+             field_value->getDay());
+  QTime time(field_value->getHour(), field_value->getMinute(),
+             field_value->getSecond());
+  field_value->getZone();
+
+  auto zone = field_value->getZone();
+  QDateTime datetime(date, time);
+  datetime.setOffsetFromUtc(zone * 60);
+
+  return datetime;
+}