composerviewbase.cpp 85.1 KB
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/*
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  SPDX-FileCopyrightText: 2010 Klaralvdalens Datakonsult AB, a KDAB Group company, info@kdab.com
  SPDX-FileCopyrightText: 2010 Leo Franchi <lfranchi@kde.org>
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  SPDX-License-Identifier: LGPL-2.0-or-later
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*/

#include "composerviewbase.h"

#include "attachment/attachmentcontrollerbase.h"
#include "attachment/attachmentmodel.h"
#include "composer-ng/richtextcomposerng.h"
#include "composer-ng/richtextcomposersignatures.h"
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#include "composer.h"
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#include "composer/keyresolver.h"
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#include "composer/signaturecontroller.h"
#include "imagescaling/imagescalingutils.h"
#include "job/emailaddressresolvejob.h"
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#include "part/globalpart.h"
#include "part/infopart.h"
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#include "utils/kleo_util.h"
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#include "utils/util.h"
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#include "utils/util_p.h"
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#include <KPIMTextEdit/RichTextComposerControler>
#include <KPIMTextEdit/RichTextComposerImages>
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#include "sendlater/sendlatercreatejob.h"
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#include "sendlater/sendlaterinfo.h"
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#include "helper/messagehelper.h"
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#include <PimCommonAkonadi/RecentAddresses>
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#include "settings/messagecomposersettings.h"
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#include <MessageComposer/RecipientsEditor>
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#include <KCursorSaver>
#include <KIdentityManagement/Identity>
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#include <MimeTreeParser/ObjectTreeParser>
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#include <MimeTreeParser/SimpleObjectTreeSource>
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#include <Sonnet/DictionaryComboBox>
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#include <MessageCore/AutocryptStorage>
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#include <MessageCore/NodeHelper>
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#include <MessageCore/StringUtil>
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#include <MailTransport/TransportComboBox>
#include <MailTransport/TransportManager>
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#include <MailTransportAkonadi/MessageQueueJob>
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#include <Akonadi/KMime/MessageFlags>
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#include <Akonadi/KMime/SpecialMailCollections>
#include <AkonadiCore/collectionfetchjob.h>
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#include <AkonadiCore/itemcreatejob.h>
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#include <AkonadiWidgets/collectioncombobox.h>

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#include <KEmailAddress>
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#include <KIdentityManagement/kidentitymanagement/identitycombo.h>
#include <KIdentityManagement/kidentitymanagement/identitymanager.h>

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#include "messagecomposer_debug.h"
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#include <QGpgME/ExportJob>
#include <QGpgME/ImportJob>
#include <QGpgME/Protocol>
#include <gpgme++/context.h>
#include <gpgme++/gpgmepp_version.h>
#include <gpgme++/importresult.h>

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#include <KLocalizedString>
#include <KMessageBox>
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#include <QSaveFile>
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#include <QDir>
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#include <QStandardPaths>
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#include <QTemporaryDir>
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#include <QTimer>
#include <QUuid>
#include <followupreminder/followupremindercreatejob.h>

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using namespace MessageComposer;

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static QStringList encodeIdn(const QStringList &emails)
{
    QStringList encoded;
    encoded.reserve(emails.count());
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    for (const QString &email : emails) {
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        encoded << KEmailAddress::normalizeAddressesAndEncodeIdn(email);
    }

    return encoded;
}

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ComposerViewBase::ComposerViewBase(QObject *parent, QWidget *parentGui)
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    : QObject(parent)
    , m_msg(KMime::Message::Ptr(new KMime::Message))
    , m_parentWidget(parentGui)
    , m_cryptoMessageFormat(Kleo::AutoFormat)
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    , m_autoSaveInterval(60000) // default of 1 min
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{
    m_charsets << "utf-8"; // default, so we have a backup in case client code forgot to set.

    initAutoSave();
}

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ComposerViewBase::~ComposerViewBase() = default;
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bool ComposerViewBase::isComposing() const
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{
    return !m_composers.isEmpty();
}

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void ComposerViewBase::setMessage(const KMime::Message::Ptr &msg, bool allowDecryption)
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{
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    if (m_attachmentModel) {
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        foreach (const MessageCore::AttachmentPart::Ptr &attachment, m_attachmentModel->attachments()) {
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            if (!m_attachmentModel->removeAttachment(attachment)) {
                qCWarning(MESSAGECOMPOSER_LOG) << "Attachment not found.";
            }
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        }
    }
    m_msg = msg;
    if (m_recipientsEditor) {
        m_recipientsEditor->clear();
        m_recipientsEditor->setRecipientString(m_msg->to()->mailboxes(), MessageComposer::Recipient::To);
        m_recipientsEditor->setRecipientString(m_msg->cc()->mailboxes(), MessageComposer::Recipient::Cc);
        m_recipientsEditor->setRecipientString(m_msg->bcc()->mailboxes(), MessageComposer::Recipient::Bcc);
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        m_recipientsEditor->setRecipientString(m_msg->replyTo()->mailboxes(), MessageComposer::Recipient::ReplyTo);
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        m_recipientsEditor->setFocusBottom();

        // If we are loading from a draft, load unexpanded aliases as well
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        if (auto hrd = m_msg->headerByType("X-KMail-UnExpanded-To")) {
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            const QStringList spl = hrd->asUnicodeString().split(QLatin1Char(','));
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            for (const QString &addr : spl) {
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                if (!m_recipientsEditor->addRecipient(addr, MessageComposer::Recipient::To)) {
                    qCWarning(MESSAGECOMPOSER_LOG) << "Impossible to add recipient.";
                }
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            }
        }
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        if (auto hrd = m_msg->headerByType("X-KMail-UnExpanded-CC")) {
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            const QStringList spl = hrd->asUnicodeString().split(QLatin1Char(','));
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            for (const QString &addr : spl) {
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                if (!m_recipientsEditor->addRecipient(addr, MessageComposer::Recipient::Cc)) {
                    qCWarning(MESSAGECOMPOSER_LOG) << "Impossible to add recipient.";
                }
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            }
        }
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        if (auto hrd = m_msg->headerByType("X-KMail-UnExpanded-BCC")) {
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            const QStringList spl = hrd->asUnicodeString().split(QLatin1Char(','));
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            for (const QString &addr : spl) {
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                if (!m_recipientsEditor->addRecipient(addr, MessageComposer::Recipient::Bcc)) {
                    qCWarning(MESSAGECOMPOSER_LOG) << "Impossible to add recipient.";
                }
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            }
        }
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        if (auto hrd = m_msg->headerByType("X-KMail-UnExpanded-Reply-To")) {
            const QStringList spl = hrd->asUnicodeString().split(QLatin1Char(','));
            for (const QString &addr : spl) {
                if (!m_recipientsEditor->addRecipient(addr, MessageComposer::Recipient::ReplyTo)) {
                    qCWarning(MESSAGECOMPOSER_LOG) << "Impossible to add recipient.";
                }
            }
        }
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    }

    // First, we copy the message and then parse it to the object tree parser.
    // The otp gets the message text out of it, in textualContent(), and also decrypts
    // the message if necessary.
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    auto msgContent = new KMime::Content;
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    msgContent->setContent(m_msg->encodedContent());
    msgContent->parse();
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    MimeTreeParser::SimpleObjectTreeSource emptySource;
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    MimeTreeParser::ObjectTreeParser otp(&emptySource); // All default are ok
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    emptySource.setDecryptMessage(allowDecryption);
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    otp.parseObjectTree(msgContent);

    // Load the attachments
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    foreach (const auto &att, otp.nodeHelper()->attachmentsOfExtraContents()) {
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        addAttachmentPart(att);
    }
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    foreach (const auto &att, msgContent->attachments()) {
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        addAttachmentPart(att);
    }

    int transportId = -1;
    if (auto hdr = m_msg->headerByType("X-KMail-Transport")) {
        transportId = hdr->asUnicodeString().toInt();
    }

    if (m_transport) {
        const MailTransport::Transport *transport = MailTransport::TransportManager::self()->transportById(transportId);
        if (transport) {
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            if (!m_transport->setCurrentTransport(transport->id())) {
                qCWarning(MESSAGECOMPOSER_LOG) << "Impossible to find transport id" << transport->id();
            }
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        }
    }

    // Set the HTML text and collect HTML images
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    QString htmlContent = otp.htmlContent();
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    if (htmlContent.isEmpty()) {
        m_editor->setPlainText(otp.plainTextContent());
    } else {
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        // Bug 372085 <div id="name"> is replaced in qtextedit by <a id="name">... => break url
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        htmlContent.replace(QRegularExpression(QStringLiteral("<div\\s*id=\".*\">")), QStringLiteral("<div>"));
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        m_editor->setHtml(htmlContent);
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        Q_EMIT enableHtml();
        collectImages(m_msg.data());
    }

    if (auto hdr = m_msg->headerByType("X-KMail-CursorPos")) {
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        m_editor->setCursorPositionFromStart(hdr->asUnicodeString().toUInt());
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    }
    delete msgContent;
}

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void ComposerViewBase::updateTemplate(const KMime::Message::Ptr &msg)
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{
    // First, we copy the message and then parse it to the object tree parser.
    // The otp gets the message text out of it, in textualContent(), and also decrypts
    // the message if necessary.
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    auto msgContent = new KMime::Content;
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    msgContent->setContent(msg->encodedContent());
    msgContent->parse();
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    MimeTreeParser::SimpleObjectTreeSource emptySource;
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    MimeTreeParser::ObjectTreeParser otp(&emptySource); // All default are ok
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    otp.parseObjectTree(msgContent);
    // Set the HTML text and collect HTML images
    if (!otp.htmlContent().isEmpty()) {
        m_editor->setHtml(otp.htmlContent());
        Q_EMIT enableHtml();
        collectImages(msg.data());
    } else {
        m_editor->setPlainText(otp.plainTextContent());
    }

    if (auto hdr = msg->headerByType("X-KMail-CursorPos")) {
        m_editor->setCursorPositionFromStart(hdr->asUnicodeString().toInt());
    }
    delete msgContent;
}

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void ComposerViewBase::saveMailSettings()
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{
    const KIdentityManagement::Identity identity = identityManager()->identityForUoid(m_identityCombo->currentIdentity());
    auto header = new KMime::Headers::Generic("X-KMail-Transport");
    header->fromUnicodeString(QString::number(m_transport->currentTransportId()), "utf-8");
    m_msg->setHeader(header);

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    header = new KMime::Headers::Generic("X-KMail-Transport-Name");
    header->fromUnicodeString(m_transport->currentText(), "utf-8");
    m_msg->setHeader(header);

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    header = new KMime::Headers::Generic("X-KMail-Fcc");
    header->fromUnicodeString(QString::number(m_fccCollection.id()), "utf-8");
    m_msg->setHeader(header);
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    header = new KMime::Headers::Generic("X-KMail-Identity");
    header->fromUnicodeString(QString::number(identity.uoid()), "utf-8");
    m_msg->setHeader(header);
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    header = new KMime::Headers::Generic("X-KMail-Identity-Name");
    header->fromUnicodeString(identity.identityName(), "utf-8");
    m_msg->setHeader(header);

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    header = new KMime::Headers::Generic("X-KMail-Dictionary");
    header->fromUnicodeString(m_dictionary->currentDictionary(), "utf-8");
    m_msg->setHeader(header);

    // Save the quote prefix which is used for this message. Each message can have
    // a different quote prefix, for example depending on the original sender.
    if (m_editor->quotePrefixName().isEmpty()) {
        m_msg->removeHeader("X-KMail-QuotePrefix");
    } else {
        header = new KMime::Headers::Generic("X-KMail-QuotePrefix");
        header->fromUnicodeString(m_editor->quotePrefixName(), "utf-8");
        m_msg->setHeader(header);
    }

    if (m_editor->composerControler()->isFormattingUsed()) {
        qCDebug(MESSAGECOMPOSER_LOG) << "HTML mode";
        header = new KMime::Headers::Generic("X-KMail-Markup");
        header->fromUnicodeString(QStringLiteral("true"), "utf-8");
        m_msg->setHeader(header);
    } else {
        m_msg->removeHeader("X-KMail-Markup");
        qCDebug(MESSAGECOMPOSER_LOG) << "Plain text";
    }
}

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void ComposerViewBase::clearFollowUp()
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{
    mFollowUpDate = QDate();
    mFollowUpCollection = Akonadi::Collection();
}

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void ComposerViewBase::send(MessageComposer::MessageSender::SendMethod method, MessageComposer::MessageSender::SaveIn saveIn, bool checkMailDispatcher)
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{
    mSendMethod = method;
    mSaveIn = saveIn;

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    KCursorSaver saver(Qt::WaitCursor);
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    const KIdentityManagement::Identity identity = identityManager()->identityForUoid(m_identityCombo->currentIdentity());

    if (identity.attachVcard() && m_attachmentController->attachOwnVcard()) {
        const QString vcardFileName = identity.vCardFile();
        if (!vcardFileName.isEmpty()) {
            m_attachmentController->addAttachmentUrlSync(QUrl::fromLocalFile(vcardFileName));
        }
    }
    saveMailSettings();

    if (m_editor->composerControler()->isFormattingUsed() && inlineSigningEncryptionSelected()) {
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        const QString keepBtnText =
            m_encrypt ? m_sign ? i18n("&Keep markup, do not sign/encrypt") : i18n("&Keep markup, do not encrypt") : i18n("&Keep markup, do not sign");
        const QString yesBtnText = m_encrypt ? m_sign ? i18n("Sign/Encrypt (delete markup)") : i18n("Encrypt (delete markup)") : i18n("Sign (delete markup)");
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        int ret = KMessageBox::warningYesNoCancel(m_parentWidget,
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                                                  i18n("<qt><p>Inline signing/encrypting of HTML messages is not possible;</p>"
                                                       "<p>do you want to delete your markup?</p></qt>"),
                                                  i18n("Sign/Encrypt Message?"),
                                                  KGuiItem(yesBtnText),
                                                  KGuiItem(keepBtnText));
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        if (KMessageBox::Cancel == ret) {
            return;
        }
        if (KMessageBox::No == ret) {
            m_encrypt = false;
            m_sign = false;
        } else {
            Q_EMIT disableHtml(NoConfirmationNeeded);
        }
    }

    if (m_neverEncrypt && saveIn != MessageComposer::MessageSender::SaveInNone) {
        // we can't use the state of the mail itself, to remember the
        // signing and encryption state, so let's add a header instead
        auto header = new KMime::Headers::Generic("X-KMail-SignatureActionEnabled");
        header->fromUnicodeString(m_sign ? QStringLiteral("true") : QStringLiteral("false"), "utf-8");
        m_msg->setHeader(header);
        header = new KMime::Headers::Generic("X-KMail-EncryptActionEnabled");
        header->fromUnicodeString(m_encrypt ? QStringLiteral("true") : QStringLiteral("false"), "utf-8");
        m_msg->setHeader(header);
        header = new KMime::Headers::Generic("X-KMail-CryptoMessageFormat");
        header->fromUnicodeString(QString::number(m_cryptoMessageFormat), "utf-8");
        m_msg->setHeader(header);
    } else {
        MessageComposer::Util::removeNotNecessaryHeaders(m_msg);
    }

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    if (mSendMethod == MessageComposer::MessageSender::SendImmediate && checkMailDispatcher) {
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        if (!MessageComposer::Util::sendMailDispatcherIsOnline(m_parentWidget)) {
            qCWarning(MESSAGECOMPOSER_LOG) << "Impossible to set sendmaildispatcher online. Please verify it";
            return;
        }
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    }

    readyForSending();
}

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void ComposerViewBase::setCustomHeader(const QMap<QByteArray, QString> &customHeader)
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{
    m_customHeader = customHeader;
}

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void ComposerViewBase::readyForSending()
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{
    qCDebug(MESSAGECOMPOSER_LOG) << "Entering readyForSending";
    if (!m_msg) {
        qCDebug(MESSAGECOMPOSER_LOG) << "m_msg == 0!";
        return;
    }

    if (!m_composers.isEmpty()) {
        // This may happen if e.g. the autosave timer calls applyChanges.
        qCDebug(MESSAGECOMPOSER_LOG) << "Called while composer active; ignoring.";
        return;
    }

    // first, expand all addresses
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    auto job = new MessageComposer::EmailAddressResolveJob(this);
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    const KIdentityManagement::Identity identity = identityManager()->identityForUoid(m_identityCombo->currentIdentity());
    if (!identity.isNull()) {
        job->setDefaultDomainName(identity.defaultDomainName());
    }
    job->setFrom(from());
    job->setTo(m_recipientsEditor->recipientStringList(MessageComposer::Recipient::To));
    job->setCc(m_recipientsEditor->recipientStringList(MessageComposer::Recipient::Cc));
    job->setBcc(m_recipientsEditor->recipientStringList(MessageComposer::Recipient::Bcc));
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    job->setReplyTo(m_recipientsEditor->recipientStringList(MessageComposer::Recipient::ReplyTo));
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    connect(job, &MessageComposer::EmailAddressResolveJob::result, this, &ComposerViewBase::slotEmailAddressResolved);
    job->start();
}

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void ComposerViewBase::slotEmailAddressResolved(KJob *job)
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{
    if (job->error()) {
        qCWarning(MESSAGECOMPOSER_LOG) << "An error occurred while resolving the email addresses:" << job->errorString();
        // This error could be caused by a broken search infrastructure, so we ignore it for now
        // to not block sending emails completely.
    }

    bool autoresizeImage = MessageComposer::MessageComposerSettings::self()->autoResizeImageEnabled();

    const MessageComposer::EmailAddressResolveJob *resolveJob = qobject_cast<MessageComposer::EmailAddressResolveJob *>(job);
    if (mSaveIn == MessageComposer::MessageSender::SaveInNone) {
        mExpandedFrom = resolveJob->expandedFrom();
        mExpandedTo = resolveJob->expandedTo();
        mExpandedCc = resolveJob->expandedCc();
        mExpandedBcc = resolveJob->expandedBcc();
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        mExpandedReplyTo = resolveJob->expandedReplyTo();
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        if (autoresizeImage) {
            QStringList listEmails;
            listEmails << mExpandedFrom;
            listEmails << mExpandedTo;
            listEmails << mExpandedCc;
            listEmails << mExpandedBcc;
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            listEmails << mExpandedReplyTo;
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            MessageComposer::Utils resizeUtils;
            autoresizeImage = resizeUtils.filterRecipients(listEmails);
        }
    } else { // saved to draft, so keep the old values, not very nice.
        mExpandedFrom = from();
        foreach (const MessageComposer::Recipient::Ptr &r, m_recipientsEditor->recipients()) {
            switch (r->type()) {
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            case MessageComposer::Recipient::To:
                mExpandedTo << r->email();
                break;
            case MessageComposer::Recipient::Cc:
                mExpandedCc << r->email();
                break;
            case MessageComposer::Recipient::Bcc:
                mExpandedBcc << r->email();
                break;
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            case MessageComposer::Recipient::ReplyTo:
                mExpandedReplyTo << r->email();
                break;
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            case MessageComposer::Recipient::Undefined:
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                Q_ASSERT(!"Unknown recipient type!");
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                break;
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            }
        }
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        QStringList unExpandedTo, unExpandedCc, unExpandedBcc, unExpandedReplyTo;
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        const auto expandedToLst{resolveJob->expandedTo()};
        for (const QString &exp : expandedToLst) {
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            if (!mExpandedTo.contains(exp)) { // this address was expanded, so save it explicitly
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                unExpandedTo << exp;
            }
        }
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        const auto expandedCcLst{resolveJob->expandedCc()};
        for (const QString &exp : expandedCcLst) {
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            if (!mExpandedCc.contains(exp)) {
                unExpandedCc << exp;
            }
        }
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        const auto expandedBCcLst{resolveJob->expandedBcc()};
        for (const QString &exp : expandedBCcLst) {
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            if (!mExpandedBcc.contains(exp)) { // this address was expanded, so save it explicitly
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                unExpandedBcc << exp;
            }
        }
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        const auto expandedReplyLst{resolveJob->expandedReplyTo()};
        for (const QString &exp : expandedReplyLst) {
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            if (!mExpandedReplyTo.contains(exp)) { // this address was expanded, so save it explicitly
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                unExpandedReplyTo << exp;
            }
        }
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        auto header = new KMime::Headers::Generic("X-KMail-UnExpanded-To");
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        header->from7BitString(unExpandedTo.join(QLatin1String(", ")).toLatin1());
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        m_msg->setHeader(header);
        header = new KMime::Headers::Generic("X-KMail-UnExpanded-CC");
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        header->from7BitString(unExpandedCc.join(QLatin1String(", ")).toLatin1());
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        m_msg->setHeader(header);
        header = new KMime::Headers::Generic("X-KMail-UnExpanded-BCC");
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        header->from7BitString(unExpandedBcc.join(QLatin1String(", ")).toLatin1());
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        m_msg->setHeader(header);
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        header = new KMime::Headers::Generic("X-KMail-UnExpanded-Reply-To");
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        header->from7BitString(unExpandedReplyTo.join(QLatin1String(", ")).toLatin1());
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        m_msg->setHeader(header);
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        autoresizeImage = false;
    }

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    Q_ASSERT(m_composers.isEmpty()); // composers should be empty. The caller of this function
    // checks for emptiness before calling it
    // so just ensure it actually is empty
    // and document it
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    // we first figure out if we need to create multiple messages with different crypto formats
    // if so, we create a composer per format
    // if we aren't signing or encrypting, this just returns a single empty message
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    if (m_neverEncrypt && mSaveIn != MessageComposer::MessageSender::SaveInNone && !mSendLaterInfo) {
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        auto composer = new MessageComposer::Composer;
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        composer->setNoCrypto(true);
        m_composers.append(composer);
    } else {
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        bool wasCanceled = false;
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        m_composers = generateCryptoMessages(wasCanceled);
        if (wasCanceled) {
            return;
        }
    }

    if (m_composers.isEmpty()) {
        Q_EMIT failed(i18n("It was not possible to create a message composer."));
        return;
    }

    if (autoresizeImage) {
        if (MessageComposer::MessageComposerSettings::self()->askBeforeResizing()) {
            if (m_attachmentModel) {
                MessageComposer::Utils resizeUtils;
                if (resizeUtils.containsImage(m_attachmentModel->attachments())) {
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                    const int rc = KMessageBox::warningYesNo(m_parentWidget,
                                                             i18n("Do you want to resize images?"),
                                                             i18n("Auto Resize Images"),
                                                             KStandardGuiItem::yes(),
                                                             KStandardGuiItem::no());
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                    if (rc == KMessageBox::Yes) {
                        autoresizeImage = true;
                    } else {
                        autoresizeImage = false;
                    }
                } else {
                    autoresizeImage = false;
                }
            }
        }
    }
    // Compose each message and prepare it for queueing, sending, or storing
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    foreach (MessageComposer::Composer *composer, m_composers) {
        fillGlobalPart(composer->globalPart());
        m_editor->fillComposerTextPart(composer->textPart());
        fillInfoPart(composer->infoPart(), UseExpandedRecipients);

        if (m_attachmentModel) {
            composer->addAttachmentParts(m_attachmentModel->attachments(), autoresizeImage);
        }

        connect(composer, &MessageComposer::Composer::result, this, &ComposerViewBase::slotSendComposeResult);
        composer->start();
        qCDebug(MESSAGECOMPOSER_LOG) << "Started a composer for sending!";
    }
}

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namespace
{
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// helper methods for reading encryption settings

inline int encryptKeyNearExpiryWarningThresholdInDays()
{
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    if (!MessageComposer::MessageComposerSettings::self()->cryptoWarnWhenNearExpire()) {
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        return -1;
    }
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    const int num = MessageComposer::MessageComposerSettings::self()->cryptoWarnEncrKeyNearExpiryThresholdDays();
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    return qMax(1, num);
}

inline int signingKeyNearExpiryWarningThresholdInDays()
{
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    if (!MessageComposer::MessageComposerSettings::self()->cryptoWarnWhenNearExpire()) {
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        return -1;
    }
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    const int num = MessageComposer::MessageComposerSettings::self()->cryptoWarnSignKeyNearExpiryThresholdDays();
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    return qMax(1, num);
}

inline int encryptRootCertNearExpiryWarningThresholdInDays()
{
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    if (!MessageComposer::MessageComposerSettings::self()->cryptoWarnWhenNearExpire()) {
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        return -1;
    }
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    const int num = MessageComposer::MessageComposerSettings::self()->cryptoWarnEncrRootNearExpiryThresholdDays();
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    return qMax(1, num);
}

inline int signingRootCertNearExpiryWarningThresholdInDays()
{
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    if (!MessageComposer::MessageComposerSettings::self()->cryptoWarnWhenNearExpire()) {
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        return -1;
    }
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    const int num = MessageComposer::MessageComposerSettings::self()->cryptoWarnSignRootNearExpiryThresholdDays();
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    return qMax(1, num);
}

inline int encryptChainCertNearExpiryWarningThresholdInDays()
{
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    if (!MessageComposer::MessageComposerSettings::self()->cryptoWarnWhenNearExpire()) {
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        return -1;
    }
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    const int num = MessageComposer::MessageComposerSettings::self()->cryptoWarnEncrChaincertNearExpiryThresholdDays();
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    return qMax(1, num);
}

inline int signingChainCertNearExpiryWarningThresholdInDays()
{
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    if (!MessageComposer::MessageComposerSettings::self()->cryptoWarnWhenNearExpire()) {
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        return -1;
    }
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    const int num = MessageComposer::MessageComposerSettings::self()->cryptoWarnSignChaincertNearExpiryThresholdDays();
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    return qMax(1, num);
}

inline bool encryptToSelf()
{
    return MessageComposer::MessageComposerSettings::self()->cryptoEncryptToSelf();
}

inline bool showKeyApprovalDialog()
{
    return MessageComposer::MessageComposerSettings::self()->cryptoShowKeysForApproval();
}
} // nameless namespace

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bool ComposerViewBase::addKeysToContext(const QString &gnupgHome,
                                        const QVector<QPair<QStringList, std::vector<GpgME::Key>>> &data,
                                        const std::map<QByteArray, QString> &autocryptMap)
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{
    bool needSpecialContext = false;

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    for (const auto &p : data) {
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        for (const auto &k : p.second) {
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            const auto it = autocryptMap.find(k.primaryFingerprint());
            if (it != autocryptMap.end()) {
                needSpecialContext = true;
                break;
            }
        }
        if (needSpecialContext) {
            break;
        }
    }

    qDebug() << "addKeysToContext: " << needSpecialContext;

    if (!needSpecialContext) {
        return false;
    }
    const QGpgME::Protocol *proto(QGpgME::openpgp());

    const auto storage = MessageCore::AutocryptStorage::self();
    QEventLoop loop;
    int runningJobs = 0;
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    for (const auto &p : data) {
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        for (const auto &k : p.second) {
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            const auto it = autocryptMap.find(k.primaryFingerprint());
            if (it == autocryptMap.end()) {
                qDebug() << "Adding " << k.primaryFingerprint() << "via Export/Import";
                auto exportJob = proto->publicKeyExportJob(false);
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                connect(exportJob,
                        &QGpgME::ExportJob::result,
                        [&gnupgHome, &proto, &runningJobs, &loop, &k](const GpgME::Error &result,
                                                                      const QByteArray &keyData,
                                                                      const QString &auditLogAsHtml,
                                                                      const GpgME::Error &auditLogError) {
                            Q_UNUSED(auditLogAsHtml);
                            Q_UNUSED(auditLogError);
                            if (result) {
                                qCWarning(MESSAGECOMPOSER_LOG) << "Failed to export " << k.primaryFingerprint() << result.asString();
                                --runningJobs;
                                if (runningJobs < 1) {
                                    loop.quit();
                                }
                            }

                            auto importJob = proto->importJob();
                            QGpgME::Job::context(importJob)->setEngineHomeDirectory(gnupgHome.toUtf8().constData());
                            importJob->exec(keyData);
                            importJob->deleteLater();
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                            --runningJobs;
                            if (runningJobs < 1) {
                                loop.quit();
                            }
                        });
                QStringList patterns;
                patterns << QString::fromUtf8(k.primaryFingerprint());
                runningJobs++;
                exportJob->start(patterns);
#if GPGMEPP_VERSION >= 0x10E00 // 1.14.0
                exportJob->setExportFlags(GpgME::Context::ExportMinimal);
#endif
            } else {
                qDebug() << "Adding " << k.primaryFingerprint() << "from Autocrypt storage";
                const auto recipient = storage->getRecipient(it->second.toUtf8());
                auto key = recipient->gpgKey();
                auto keydata = recipient->gpgKeydata();
                if (QByteArray(key.primaryFingerprint()) != QByteArray(k.primaryFingerprint())) {
                    qDebug() << "Using gossipkey";
                    keydata = recipient->gossipKeydata();
                }
                auto importJob = proto->importJob();
                QGpgME::Job::context(importJob)->setEngineHomeDirectory(gnupgHome.toUtf8().constData());
                const auto result = importJob->exec(keydata);
                importJob->deleteLater();
            }
        }
    }
    loop.exec();
    return true;
}

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QVector<MessageComposer::Composer *> ComposerViewBase::generateCryptoMessages(bool &wasCanceled)
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{
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    const KIdentityManagement::Identity &id = m_identMan->identityForUoidOrDefault(m_identityCombo->currentIdentity());
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    qCDebug(MESSAGECOMPOSER_LOG) << "filling crypto info";
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    QScopedPointer<Kleo::KeyResolver> keyResolver(new Kleo::KeyResolver(encryptToSelf(),
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                                                                        showKeyApprovalDialog(),
                                                                        id.pgpAutoEncrypt(),
                                                                        m_cryptoMessageFormat,
                                                                        encryptKeyNearExpiryWarningThresholdInDays(),
                                                                        signingKeyNearExpiryWarningThresholdInDays(),
                                                                        encryptRootCertNearExpiryWarningThresholdInDays(),
                                                                        signingRootCertNearExpiryWarningThresholdInDays(),
                                                                        encryptChainCertNearExpiryWarningThresholdInDays(),
                                                                        signingChainCertNearExpiryWarningThresholdInDays()));
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    keyResolver->setAutocryptEnabled(id.autocryptEnabled());

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    QStringList encryptToSelfKeys;
    QStringList signKeys;

    bool signSomething = m_sign;
    bool doSignCompletely = m_sign;
    bool encryptSomething = m_encrypt;
    bool doEncryptCompletely = m_encrypt;

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    // Add encryptionkeys from id to keyResolver
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    qCDebug(MESSAGECOMPOSER_LOG) << id.pgpEncryptionKey().isEmpty() << id.smimeEncryptionKey().isEmpty();
    if (!id.pgpEncryptionKey().isEmpty()) {
        encryptToSelfKeys.push_back(QLatin1String(id.pgpEncryptionKey()));
    }
    if (!id.smimeEncryptionKey().isEmpty()) {
        encryptToSelfKeys.push_back(QLatin1String(id.smimeEncryptionKey()));
    }
    if (keyResolver->setEncryptToSelfKeys(encryptToSelfKeys) != Kleo::Ok) {
        qCDebug(MESSAGECOMPOSER_LOG) << "Failed to set encryptoToSelf keys!";
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        return QVector<MessageComposer::Composer *>();
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    }

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    // Add signingkeys from id to keyResolver
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    if (!id.pgpSigningKey().isEmpty()) {
        signKeys.push_back(QLatin1String(id.pgpSigningKey()));
    }
    if (!id.smimeSigningKey().isEmpty()) {
        signKeys.push_back(QLatin1String(id.smimeSigningKey()));
    }
    if (keyResolver->setSigningKeys(signKeys) != Kleo::Ok) {
        qCDebug(MESSAGECOMPOSER_LOG) << "Failed to set signing keys!";
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        return QVector<MessageComposer::Composer *>();
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    }

    if (m_attachmentModel) {
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        const auto attachments = m_attachmentModel->attachments();
        for (const MessageCore::AttachmentPart::Ptr &attachment : attachments) {
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            if (attachment->isSigned()) {
                signSomething = true;
            } else {
                doEncryptCompletely = false;
            }
            if (attachment->isEncrypted()) {
                encryptSomething = true;
            } else {
                doSignCompletely = false;
            }
        }
    }

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    const QStringList recipients = mExpandedTo + mExpandedCc;
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    const QStringList bcc(mExpandedBcc);
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    keyResolver->setPrimaryRecipients(recipients);
    keyResolver->setSecondaryRecipients(bcc);

    bool result = true;
    bool canceled = false;
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    signSomething = determineWhetherToSign(doSignCompletely, keyResolver.data(), signSomething, result, canceled);
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    if (!result) {
        // TODO handle failure
        qCDebug(MESSAGECOMPOSER_LOG) << "determineWhetherToSign: failed to resolve keys! oh noes";
        if (!canceled) {
            Q_EMIT failed(i18n("Failed to resolve keys. Please report a bug."));
        } else {
            Q_EMIT failed(QString());
        }
        wasCanceled = canceled;
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        return QVector<MessageComposer::Composer *>();
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    }

    canceled = false;
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    encryptSomething = determineWhetherToEncrypt(doEncryptCompletely, keyResolver.data(), encryptSomething, signSomething, result, canceled);
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    if (!result) {
        // TODO handle failure
        qCDebug(MESSAGECOMPOSER_LOG) << "determineWhetherToEncrypt: failed to resolve keys! oh noes";
        if (!canceled) {
            Q_EMIT failed(i18n("Failed to resolve keys. Please report a bug."));
        } else {
            Q_EMIT failed(QString());
        }

        wasCanceled = canceled;
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        return QVector<MessageComposer::Composer *>();
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    }

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    // No encryption or signing is needed
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    if (!signSomething && !encryptSomething) {
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        return QVector<MessageComposer::Composer *>() << new MessageComposer::Composer();
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    }

    const Kleo::Result kpgpResult = keyResolver->resolveAllKeys(signSomething, encryptSomething);
    if (kpgpResult == Kleo::Canceled) {
        qCDebug(MESSAGECOMPOSER_LOG) << "resolveAllKeys: one key resolution canceled by user";
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        return QVector<MessageComposer::Composer *>();
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    } else if (kpgpResult != Kleo::Ok) {
        // TODO handle failure
        qCDebug(MESSAGECOMPOSER_LOG) << "resolveAllKeys: failed to resolve keys! oh noes";
        Q_EMIT failed(i18n("Failed to resolve keys. Please report a bug."));
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        return QVector<MessageComposer::Composer *>();
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    }
    qCDebug(MESSAGECOMPOSER_LOG) << "done resolving keys:";

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    QVector<MessageComposer::Composer *> composers;
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    if (encryptSomething || signSomething) {
        Kleo::CryptoMessageFormat concreteFormat = Kleo::AutoFormat;
        for (unsigned int i = 0; i < numConcreteCryptoMessageFormats; ++i) {
            concreteFormat = concreteCryptoMessageFormats[i];
            if (keyResolver->encryptionItems(concreteFormat).empty()) {
                continue;
            }

            if (!(concreteFormat & m_cryptoMessageFormat)) {
                continue;
            }

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            auto composer = new MessageComposer::Composer;
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            if (encryptSomething) {
                std::vector<Kleo::KeyResolver::SplitInfo> encData = keyResolver->encryptionItems(concreteFormat);
                std::vector<Kleo::KeyResolver::SplitInfo>::iterator it;
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                auto end(encData.end());
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                QVector<QPair<QStringList, std::vector<GpgME::Key>>> data;
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                data.reserve(encData.size());
                for (it = encData.begin(); it != end; ++it) {
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                    QPair<QStringList, std::vector<GpgME::Key>> p(it->recipients, it->keys);
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                    data.append(p);
                    qCDebug(MESSAGECOMPOSER_LOG) << "got resolved keys for:" << it->recipients;
                }
                composer->setEncryptionKeys(data);
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                if (concreteFormat & Kleo::OpenPGPMIMEFormat && id.autocryptEnabled()) {
                    composer->setAutocryptEnabled(id.autocryptEnabled());
                    composer->setSenderEncryptionKey(keyResolver->encryptToSelfKeysFor(concreteFormat)[0]);
                    QTemporaryDir dir;
                    bool specialGnupgHome = addKeysToContext(dir.path(), data, keyResolver->useAutocrypt());
                    if (specialGnupgHome) {
                        dir.setAutoRemove(false);
                        composer->setGnupgHome(dir.path());
                    }
                }
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            }

            if (signSomething) {
                // find signing keys for this format
                std::vector<GpgME::Key> signingKeys = keyResolver->signingKeys(concreteFormat);
                composer->setSigningKeys(signingKeys);
            }

            composer->setMessageCryptoFormat(concreteFormat);
            composer->setSignAndEncrypt(signSomething, encryptSomething);

            composers.append(composer);
        }
    } else {
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        auto composer = new MessageComposer::Composer;
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        composers.append(composer);
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        // If we canceled sign or encrypt be sure to change status in attachment.
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        markAllAttachmentsForSigning(false);
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        markAllAttachmentsForEncryption(false);
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    }

    if (composers.isEmpty() && (signSomething || encryptSomething)) {
        Q_ASSERT_X(false, "ComposerViewBase::fillCryptoInfo", "No concrete sign or encrypt method selected");
    }

    return composers;
}

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void ComposerViewBase::fillGlobalPart(MessageComposer::GlobalPart *globalPart)
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{
    globalPart->setParentWidgetForGui(m_parentWidget);
    globalPart->setCharsets(m_charsets);
    globalPart->setMDNRequested(m_mdnRequested);
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    globalPart->setRequestDeleveryConfirmation(m_requestDeleveryConfirmation);
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}

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void ComposerViewBase::fillInfoPart(MessageComposer::InfoPart *infoPart, ComposerViewBase::RecipientExpansion expansion)
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{
    // TODO splitAddressList and expandAliases ugliness should be handled by a
    // special AddressListEdit widget... (later: see RecipientsEditor)

    if (m_fccCombo) {
        infoPart->setFcc(QString::number(m_fccCombo->currentCollection().id()));
    } else {
        if (m_fccCollection.isValid()) {
            infoPart->setFcc(QString::number(m_fccCollection.id()));
        }
    }

    infoPart->setTransportId(m_transport->currentTransportId());
    if (expansion == UseExpandedRecipients) {
        infoPart->setFrom(mExpandedFrom);
        infoPart->setTo(mExpandedTo);
        infoPart->setCc(mExpandedCc);
        infoPart->setBcc(mExpandedBcc);
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        infoPart->setReplyTo(mExpandedReplyTo);
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    } else {
        infoPart->setFrom(from());
        infoPart->setTo(m_recipientsEditor->recipientStringList(MessageComposer::Recipient::To));
        infoPart->setCc(m_recipientsEditor->recipientStringList(MessageComposer::Recipient::Cc));
        infoPart->setBcc(m_recipientsEditor->recipientStringList(MessageComposer::Recipient::Bcc));
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        infoPart->setReplyTo(m_recipientsEditor->recipientStringList(MessageComposer::Recipient::ReplyTo));
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    }
    infoPart->setSubject(subject());
    infoPart->setUserAgent(QStringLiteral("KMail"));
    infoPart->setUrgent(m_urgent);

    if (m_msg->inReplyTo()) {
        infoPart->setInReplyTo(m_msg->inReplyTo()->asUnicodeString());
    }

    if (m_msg->references()) {
        infoPart->setReferences(m_msg->references()->asUnicodeString());
    }

    KMime::Headers::Base::List extras;
    if (auto hdr = m_msg->headerByType("X-KMail-SignatureActionEnabled")) {
        extras << hdr;
    }
    if (auto hdr = m_msg->headerByType("X-KMail-EncryptActionEnabled")) {
        extras << hdr;
    }
    if (auto hdr = m_msg->headerByType("X-KMail-CryptoMessageFormat")) {
        extras << hdr;
    }
    if (auto hdr = m_msg->headerByType("X-KMail-UnExpanded-To")) {
        extras << hdr;
    }
    if (auto hdr = m_msg->headerByType("X-KMail-UnExpanded-CC")) {
        extras << hdr;
    }
    if (auto hdr = m_msg->headerByType("X-KMail-UnExpanded-BCC")) {
        extras << hdr;
    }
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    if (auto hdr = m_msg->headerByType("X-KMail-UnExpanded-Reply-To")) {
        extras << hdr;
    }
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    if (auto hdr = m_msg->organization(false)) {
        extras << hdr;
    }
    if (auto hdr = m_msg->headerByType("X-KMail-Identity")) {
        extras << hdr;
    }
    if (auto hdr = m_msg->headerByType("X-KMail-Transport")) {
        extras << hdr;
    }
    if (auto hdr = m_msg->headerByType("X-KMail-Fcc")) {
        extras << hdr;
    }
    if (auto hdr = m_msg->headerByType("X-KMail-Drafts")) {
        extras << hdr;
    }
    if (auto hdr = m_msg->headerByType("X-KMail-Templates")) {
        extras << hdr;
    }
    if (auto hdr = m_msg->headerByType("X-KMail-Link-Message")) {
        extras << hdr;
    }
    if (auto hdr = m_msg->headerByType("X-KMail-Link-Type")) {
        extras << hdr;
    }
    if (auto hdr = m_msg->headerByType("X-Face")) {
        extras << hdr;
    }
    if (auto hdr = m_msg->headerByType("X-KMail-FccDisabled")) {
        extras << hdr;
    }
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    if (auto hdr = m_msg->headerByType("X-KMail-Identity-Name")) {
        extras << hdr;
    }
    if (auto hdr = m_msg->headerByType("X-KMail-Transport-Name")) {
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        extras << hdr;
    }

    infoPart->setExtraHeaders(extras);
}

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void ComposerViewBase::slotSendComposeResult(KJob *job)
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{
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Laurent Montel committed
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    Q_ASSERT(dynamic_cast<MessageComposer::Composer *>(job));
    auto composer = static_cast<MessageComposer::Composer *>(job);
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    if (composer->error() != MessageComposer::Composer::NoError) {
        qCDebug(MESSAGECOMPOSER_LOG) << "compose job might have error: " << job->error() << " errorString: " << job->errorString();
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