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/*
Copyright (c) 2016 Sandro Knauß <knauss@kolabsys.com>
Copyright (c) 2017 Christian Mollekopf <mollekopf@kolabsys.com>
This library is free software; you can redistribute it and/or modify it
under the terms of the GNU Library General Public License as published by
the Free Software Foundation; either version 2 of the License, or (at your
option) any later version.
This library 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 Library General Public
License for more details.
You should have received a copy of the GNU Library General Public License
along with this library; see the file COPYING.LIB. If not, write to the
Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
02110-1301, USA.
*/
#include "attachmentmodel.h"
#include <mimetreeparser/objecttreeparser.h>
#include <QDebug>
#include <KMime/Content>
#include <QFile>
#include <QStandardPaths>
#include <QDesktopServices>
#include <QDir>
#include <QUrl>
#include <QMimeDatabase>
QString sizeHuman(float size)
{
QStringList list;
list << "KB" << "MB" << "GB" << "TB";
QStringListIterator i(list);
QString unit("Bytes");
while(size >= 1024.0 && i.hasNext())
{
unit = i.next();
size /= 1024.0;
}
if (unit == "Bytes") {
return QString().setNum(size) + " " + unit;
} else {
return QString().setNum(size,'f',2)+" "+unit;
}
}
class AttachmentModelPrivate
{
public:
AttachmentModelPrivate(AttachmentModel *q_ptr, const std::shared_ptr<MimeTreeParser::ObjectTreeParser> &parser);
AttachmentModel *q;
std::shared_ptr<MimeTreeParser::ObjectTreeParser> mParser;
QVector<MimeTreeParser::MessagePartPtr> mAttachments;
};
AttachmentModelPrivate::AttachmentModelPrivate(AttachmentModel* q_ptr, const std::shared_ptr<MimeTreeParser::ObjectTreeParser>& parser)
: q(q_ptr)
, mParser(parser)
{
mAttachments = mParser->collectAttachmentParts();
}
AttachmentModel::AttachmentModel(std::shared_ptr<MimeTreeParser::ObjectTreeParser> parser)
: d(std::unique_ptr<AttachmentModelPrivate>(new AttachmentModelPrivate(this, parser)))
{
}
AttachmentModel::~AttachmentModel()
{
}
QHash<int, QByteArray> AttachmentModel::roleNames() const
{
QHash<int, QByteArray> roles;
roles[TypeRole] = "type";
roles[NameRole] = "name";
roles[SizeRole] = "size";
roles[IconRole] = "iconName";
roles[IsEncryptedRole] = "encrypted";
roles[IsSignedRole] = "signed";
return roles;
}
QModelIndex AttachmentModel::index(int row, int column, const QModelIndex &parent) const
{
if (row < 0 || column != 0) {
return QModelIndex();
}
if (row < d->mAttachments.size()) {
return createIndex(row, column, d->mAttachments.at(row).data());
}
return QModelIndex();
}
QVariant AttachmentModel::data(const QModelIndex &index, int role) const
{
if (!index.isValid()) {
switch (role) {
case Qt::DisplayRole:
return QString("root");
}
return QVariant();
}
if (index.internalPointer()) {
const auto part = static_cast<MimeTreeParser::MessagePart*>(index.internalPointer());
Q_ASSERT(part);
auto node = part->node();
if (!node) {
qWarning() << "no content for attachment";
return {};
}
QMimeDatabase mimeDb;
const auto mimetype = mimeDb.mimeTypeForName(QString::fromLatin1(part->mimeType()));
const auto content = node->encodedContent();
switch(role) {
case TypeRole:
return mimetype.name();
case NameRole:
return part->filename();
case IconRole:
return mimetype.iconName();
case SizeRole:
return sizeHuman(content.size());
case IsEncryptedRole:
return part->encryptions().size() > 0;
case IsSignedRole:
return part->signatures().size() > 0;
}
}
return QVariant();
}
static QString saveAttachmentToDisk(const QModelIndex &index, const QString &path, bool readonly = false)
{
if (index.internalPointer()) {
const auto part = static_cast<MimeTreeParser::MessagePart*>(index.internalPointer());
Q_ASSERT(part);
auto node = part->node();
auto data = node->decodedContent();
if (part->isText()) {
// convert CRLF to LF before writing text attachments to disk
data = KMime::CRLFtoLF(data);
}
auto fname = path + part->filename();
QFile f(fname);
if (!f.open(QIODevice::ReadWrite)) {
qWarning() << "Failed to write attachment to file:" << fname << " Error: " << f.errorString();
return {};
}
f.write(data);
if (readonly) {
// make file read-only so that nobody gets the impression that he migh edit attached files
f.setPermissions(QFileDevice::ReadUser);
}
f.close();
qInfo() << "Wrote attachment to file: " << fname;
return fname;
}
return {};
}
bool AttachmentModel::saveAttachmentToDisk(const QModelIndex &index)
{
auto downloadDir = QStandardPaths::writableLocation(QStandardPaths::DownloadLocation);
if (downloadDir.isEmpty()) {
downloadDir = "~";
}
downloadDir += "/kube/";
QDir{}.mkpath(downloadDir);
return !::saveAttachmentToDisk(index, downloadDir).isEmpty();
}
bool AttachmentModel::openAttachment(const QModelIndex &index)
{
auto downloadDir = QStandardPaths::writableLocation(QStandardPaths::TempLocation)+ "/kube/";
QDir{}.mkpath(downloadDir);
const auto filePath = ::saveAttachmentToDisk(index, downloadDir, true);
if (!filePath.isEmpty()) {
QDesktopServices::openUrl(QUrl("file://" + filePath));
return true;
}
return false;
}
QModelIndex AttachmentModel::parent(const QModelIndex &index) const
{
return QModelIndex();
}
int AttachmentModel::rowCount(const QModelIndex &parent) const
{
if (!parent.isValid()) {
return d->mAttachments.size();
}
return 0;
}
int AttachmentModel::columnCount(const QModelIndex &parent) const
{
return 1;
}
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