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/****************************************************************************
**
** Copyright (C) 2015 The Qt Company Ltd.
** Contact: http://www.qt.io/licensing/
**
** This file is part of the Qt Messaging Framework.
**
** $QT_BEGIN_LICENSE:LGPL21$
** Commercial License Usage
** Licensees holding valid commercial Qt licenses may use this file in
** accordance with the commercial license agreement provided with the
** Software or, alternatively, in accordance with the terms contained in
** a written agreement between you and The Qt Company. For licensing terms
** and conditions see http://www.qt.io/terms-conditions. For further
** information use the contact form at http://www.qt.io/contact-us.
**
** GNU Lesser General Public License Usage
** Alternatively, this file may be used under the terms of the GNU Lesser
** General Public License version 2.1 or version 3 as published by the Free
** Software Foundation and appearing in the file LICENSE.LGPLv21 and
** LICENSE.LGPLv3 included in the packaging of this file. Please review the
** following information to ensure the GNU Lesser General Public License
** requirements will be met: https://www.gnu.org/licenses/lgpl.html and
** http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
**
** As a special exception, The Qt Company gives you certain additional
** rights. These rights are described in The Qt Company LGPL Exception
** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
**
** $QT_END_LICENSE$
**
****************************************************************************/
#include "qmailmessageclassifier.h"
#include <qmailmessage.h>
#include <QSettings>
/*!
\class QMailMessageClassifier
\ingroup libmessageserver
\preliminary
\brief The QMailMessageClassifier class provides a simple mechanism for determining the
type of content contained by a message.
QMailMessageClassifier inspects a message to determine what type of content it contains,
according to the classification of \l{QMailMessageMetaDataFwd::ContentType}{QMailMessage::ContentType}.
Messages of type \l{QMailMessageMetaDataFwd::Email}{QMailMessage::Email} may be classified as having
\l{QMailMessageMetaDataFwd::VoicemailContent}{QMailMessage::VoicemailContent} or
\l{QMailMessageMetaDataFwd::VideomailContent}{QMailMessage::VideomailContent} content if their
\l{QMailMessage::from()} address matches any of those configured in the
\c{QtProject/messageserver.conf} file.
*/
/*!
Constructs a classifier object.
*/
QMailMessageClassifier::QMailMessageClassifier()
{
QSettings settings(QLatin1String("QtProject"), QLatin1String("messageserver"));
settings.beginGroup(QLatin1String("global"));
int count = settings.beginReadArray(QLatin1String("voicemail"));
for (int i = 0; i < count; ++i) {
settings.setArrayIndex(i);
voiceMailAddresses.append(settings.value(QLatin1String("address")).toString());
}
settings.endArray();
count = settings.beginReadArray(QLatin1String("videomail"));
for (int i = 0; i < count; ++i) {
settings.setArrayIndex(i);
videoMailAddresses.append(settings.value(QLatin1String("address")).toString());
}
settings.endArray();
settings.endGroup();
}
/*! \internal */
QMailMessageClassifier::~QMailMessageClassifier()
{
}
static QMailMessage::ContentType fromContentType(const QMailMessageContentType& contentType)
{
QByteArray type(contentType.type().toLower());
QByteArray subtype(contentType.subType().toLower());
QMailMessage::ContentType content = QMailMessage::UnknownContent;
if (type == "text") {
if (subtype == "html") {
content = QMailMessage::HtmlContent;
} else if (subtype == "plain") {
content = QMailMessage::PlainTextContent;
} else if (subtype == "x-vcard") {
content = QMailMessage::VCardContent;
} else if (subtype == "x-vcalendar") {
content = QMailMessage::VCalendarContent;
}
} else if (contentType.type().toLower() == "image") {
content = QMailMessage::ImageContent;
} else if (contentType.type().toLower() == "audio") {
content = QMailMessage::AudioContent;
} else if (contentType.type().toLower() == "video") {
content = QMailMessage::VideoContent;
}
return content;
}
/*!
Attempts to determine the type of content held within the message described by \a metaData,
if it is currently set to \l{QMailMessageMetaDataFwd::UnknownContent}{QMailMessageMetaData::UnknownContent}.
If the content type is determined, the message metadata record is updated and true is returned.
\sa QMailMessageMetaData::setContent()
*/
bool QMailMessageClassifier::classifyMessage(QMailMessageMetaData& metaData)
{
if (metaData.content() == QMailMessage::UnknownContent) {
QMailMessage::ContentType content = QMailMessage::UnknownContent;
switch (metaData.messageType()) {
case QMailMessage::Email:
// Handle voicemail emails, from pre-configured addresses
if (voiceMailAddresses.contains(metaData.from().address())) {
content = QMailMessage::VoicemailContent;
} else if(videoMailAddresses.contains(metaData.from().address())) {
content = QMailMessage::VideomailContent;
}
break;
default:
break;
}
if ((content != metaData.content()) && (content != QMailMessage::UnknownContent)) {
metaData.setContent(content);
return true;
}
}
return false;
}
/*!
Attempts to determine the type of content held within the message \a message, if it
is currently set to \l{QMailMessageMetaDataFwd::UnknownContent}{QMailMessageMetaData::UnknownContent}.
If the content type is determined, the message record is updated and true is returned.
\sa QMailMessageMetaData::setContent()
*/
bool QMailMessageClassifier::classifyMessage(QMailMessage& message)
{
if (message.content() == QMailMessage::UnknownContent) {
QMailMessagePartContainer::MultipartType multipartType(message.multipartType());
QMailMessageContentType contentType(message.contentType());
// The content type is used to categorise the message more narrowly than
// its transport categorisation
QMailMessage::ContentType content = QMailMessage::UnknownContent;
switch (message.messageType()) {
case QMailMessage::Sms:
content = fromContentType(contentType);
if (content == QMailMessage::UnknownContent) {
if (message.hasBody()) {
// Assume plain text
content = QMailMessage::PlainTextContent;
} else {
// No content in this message beside the meta data
content = QMailMessage::NoContent;
}
}
break;
case QMailMessage::Mms:
if (multipartType == QMailMessagePartContainer::MultipartNone) {
content = fromContentType(contentType);
if (content == QMailMessage::UnknownContent) {
if (contentType.type().toLower() == "text") {
// Assume some type of richer-than-plain text
content = QMailMessage::RichTextContent;
}
}
} else {
if (multipartType == QMailMessagePartContainer::MultipartRelated) {
// Assume SMIL for now - we should test for 'application/smil' somewhere...
content = QMailMessage::SmilContent;
} else {
content = QMailMessage::MultipartContent;
}
}
break;
case QMailMessage::Email:
if (multipartType == QMailMessagePartContainer::MultipartNone) {
content = fromContentType(contentType);
if (content == QMailMessage::UnknownContent) {
if (contentType.type().toLower() == "text") {
// Assume some type of richer-than-plain text
content = QMailMessage::RichTextContent;
}
}
} else {
// TODO: Much more goes here...
content = QMailMessage::MultipartContent;
}
break;
case QMailMessage::System:
content = QMailMessage::RichTextContent;
break;
default:
break;
}
if (content != QMailMessage::UnknownContent) {
message.setContent(content);
return true;
}
}
return false;
}
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