<refactor>(ui): Enhanced sending email function.

1 files changed, 116 insertions, 2 deletions

diff --git a/src/ui/function/SMTPSendMailThread.cpp b/src/ui/function/SMTPSendMailThread.cpp
index 94e97749..3e5ce9bc 100644
--- a/src/ui/function/SMTPSendMailThread.cpp
+++ b/src/ui/function/SMTPSendMailThread.cpp
@@ -24,6 +24,14 @@
 
 #include "SMTPSendMailThread.h"
 
+#include <boost/format.hpp>
+
+#include "gpg/function/BasicOperator.h"
+#include "gpg/function/GpgKeyGetter.h"
+#include "gpg/function/GpgKeyImportExporter.h"
+
+namespace GpgFrontend::UI {
+
 void SMTPSendMailThread::run() {
   SmtpClient smtp(host_.c_str(), port_, connection_type_);
 
@@ -32,6 +40,95 @@ void SMTPSendMailThread::run() {
     smtp.setPassword(password_.c_str());
   }
 
+  if (encrypt_content_ && public_key_ids_ != nullptr &&
+      !public_key_ids_->empty()) {
+    message.getContent().setContentType(
+        "multipart/encrypted; micalg=pgp-md5; "
+        "protocol=\"application/pgp-encrypted\"");
+  }
+
+  if (attach_signature_file_ && !private_key_id_.empty()) {
+    message.getContent().setContentType(
+        "multipart/signed; micalg=pgp-md5; "
+        "protocol=\"application/pgp-signature\"");
+  }
+
+  int index = 0;
+  for (auto& text : texts_) {
+    const auto plain_text = text->getText().toStdString();
+    // encrypt
+    if (encrypt_content_ && public_key_ids_ != nullptr &&
+        !public_key_ids_->empty()) {
+      ByteArrayPtr out_buffer = nullptr;
+      GpgEncrResult result;
+      auto in_buffer = std::make_unique<ByteArray>(plain_text);
+      auto keys = GpgKeyGetter::GetInstance().GetKeys(public_key_ids_);
+      auto err = BasicOperator::GetInstance().Encrypt(
+          std::move(keys), *in_buffer, out_buffer, result);
+
+      if (check_gpg_error_2_err_code(err) != GPG_ERR_NO_ERROR) {
+        emit signalSMTPResult("Fail to encrypt with gpg keys");
+        return;
+      }
+      text->setText(out_buffer->c_str());
+    }
+
+    send_texts_.push_back(std::move(text));
+
+    // sign
+    if (attach_signature_file_ && !private_key_id_.empty()) {
+      ByteArrayPtr out_buffer = nullptr;
+      GpgSignResult result;
+
+      auto& plain_mime_text = send_texts_.back();
+      auto in_buffer =
+          std::make_unique<ByteArray>(plain_mime_text->getText().toStdString());
+      auto key = GpgKeyGetter::GetInstance().GetKey(private_key_id_);
+      auto keys = std::make_unique<KeyArgsList>();
+      keys->push_back(std::move(key));
+
+      auto err = BasicOperator::GetInstance().Sign(
+          std::move(keys), *in_buffer, out_buffer, GPGME_SIG_MODE_DETACH,
+          result);
+
+      if (check_gpg_error_2_err_code(err) != GPG_ERR_NO_ERROR) {
+        emit signalSMTPResult("Fail to sign with gpg keys");
+        return;
+      }
+
+      auto sign_content_name =
+          boost::format("%1%_sign_%2%.asc") % private_key_id_ % index++;
+
+      // Add MIME
+      send_texts_.push_back(std::make_unique<MimeText>(out_buffer->c_str()));
+      auto& sig_text = send_texts_.back();
+      sig_text->setContentType("application/pgp-signature");
+      sig_text->setEncoding(MimePart::_7Bit);
+      sig_text->setContentName(sign_content_name.str().c_str());
+    }
+  }
+
+  if (attach_public_key_file_ && !attached_public_key_ids_.empty()) {
+    auto key = GpgKeyGetter::GetInstance().GetKey(attached_public_key_ids_);
+    ByteArrayPtr out_buffer = nullptr;
+    GpgKeyImportExporter::GetInstance().ExportKey(key, out_buffer);
+
+    auto public_key_file_name =
+        boost::format("%1%_pubkey.asc") % attached_public_key_ids_;
+    addFileContent(public_key_file_name.str().c_str(), out_buffer->c_str());
+    auto& key_file = files_.back();
+    key_file->setEncoding(MimePart::_7Bit);
+    key_file->setContentType("application/pgp-keys");
+  }
+
+  for (const auto& text : send_texts_) {
+    message.addPart(text.get());
+  }
+
+  for (const auto& file : files_) {
+    message.addPart(file.get());
+  }
+
   // Now we can send the mail
   if (!smtp.connectToHost()) {
     emit signalSMTPResult("Fail to connect SMTP server");
@@ -77,12 +174,29 @@ void SMTPSendMailThread::setSender(const QString& sender) {
 void SMTPSendMailThread::addTextContent(const QString& content) {
   auto text = std::make_unique<MimeText>(content);
   texts_.push_back(std::move(text));
-  message.addPart(texts_.back().get());
 }
 
 void SMTPSendMailThread::addFileContent(const QString& file_name,
                                         const QByteArray& content) {
   auto file = std::make_unique<MimeFile>(content, file_name);
   files_.push_back(std::move(file));
-  message.addPart(files_.back().get());
 }
+
+void SMTPSendMailThread::setEncryptContent(
+    bool encrypt_content, GpgFrontend::KeyIdArgsListPtr public_key_ids) {
+  this->encrypt_content_ = encrypt_content;
+  this->public_key_ids_ = std::move(public_key_ids);
+}
+
+void SMTPSendMailThread::setAttachSignatureFile(
+    bool attach_signature_file, GpgFrontend::KeyId private_key_id) {
+  this->attach_signature_file_ = attach_signature_file;
+  this->private_key_id_ = std::move(private_key_id);
+}
+
+void SMTPSendMailThread::setAttachPublicKey(
+    bool attach_public_key_file, GpgFrontend::KeyId attached_public_key_ids) {
+  this->attach_public_key_file_ = attach_public_key_file;
+  this->attached_public_key_ids_ = std::move(attached_public_key_ids);
+}
+}  // namespace GpgFrontend::UI