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/*
* Copyright (C) 2015 Christian Mollekopf <chrigi_1@fastmail.fm>
*
* This program 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 2 of the License, or
* (at your option) any later version.
*
* This program 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 this program; if not, write to the
* Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/
#include "mailpreprocessor.h"
#include <QFile>
#include <QDir>
#include <KMime/KMime/KMimeMessage>
#include "pipeline.h"
#include "definitions.h"
#include "applicationdomaintype.h"
using namespace Sink;
SINK_DEBUG_AREA("mailpreprocessor")
QString MailPropertyExtractor::getFilePathFromMimeMessagePath(const QString &s) const
{
return s;
}
struct MimeMessageReader {
MimeMessageReader(const QString &mimeMessagePath)
: f(mimeMessagePath),
mapped(0),
mappedSize(0)
{
if (mimeMessagePath.isNull()) {
SinkTrace() << "No mime message";
return;
}
SinkTrace() << "Updating indexed properties " << mimeMessagePath;
if (!f.open(QIODevice::ReadOnly)) {
SinkWarning() << "Failed to open the file: " << mimeMessagePath;
return;
}
if (!f.size()) {
SinkWarning() << "The file is empty.";
return;
}
mappedSize = qMin((qint64)8000, f.size());
mapped = f.map(0, mappedSize);
if (!mapped) {
SinkWarning() << "Failed to map the file: " << f.errorString();
return;
}
}
KMime::Message::Ptr mimeMessage()
{
if (!mapped) {
return KMime::Message::Ptr();
}
Q_ASSERT(mapped);
Q_ASSERT(mappedSize);
auto msg = KMime::Message::Ptr(new KMime::Message);
msg->setHead(KMime::CRLFtoLF(QByteArray::fromRawData(reinterpret_cast<const char*>(mapped), mappedSize)));
msg->parse();
return msg;
}
QFile f;
uchar *mapped;
qint64 mappedSize;
};
static Sink::ApplicationDomain::Mail::Contact getContact(const KMime::Headers::Generics::MailboxList *header)
{
const auto name = header->displayNames().isEmpty() ? QString() : header->displayNames().first();
const auto address = header->addresses().isEmpty() ? QString() : header->addresses().first();
return Sink::ApplicationDomain::Mail::Contact{name, address};
}
static QList<Sink::ApplicationDomain::Mail::Contact> getContactList(const KMime::Headers::Generics::AddressList *header)
{
QList<Sink::ApplicationDomain::Mail::Contact> list;
for (const auto mb : header->mailboxes()) {
list << Sink::ApplicationDomain::Mail::Contact{mb.name(), mb.address()};
}
return list;
}
static void updatedIndexedProperties(Sink::ApplicationDomain::Mail &mail, KMime::Message::Ptr msg)
{
mail.setExtractedSubject(msg->subject(true)->asUnicodeString());
mail.setExtractedSender(getContact(msg->from(true)));
mail.setExtractedTo(getContactList(msg->to(true)));
mail.setExtractedCc(getContactList(msg->cc(true)));
mail.setExtractedBcc(getContactList(msg->bcc(true)));
mail.setExtractedDate(msg->date(true)->dateTime());
//The rest should never change, unless we didn't have the headers available initially.
auto messageId = msg->messageID(true)->identifier();
//Ensure the mssageId is unique.
//If there already is one with the same id we'd have to assign a new message id, which probably doesn't make any sense.
//The last is the parent
auto references = msg->references(true)->identifiers();
//The first is the parent
auto inReplyTo = msg->inReplyTo(true)->identifiers();
QByteArray parentMessageId;
if (!references.isEmpty()) {
parentMessageId = references.last();
//TODO we could use the rest of the references header to complete the ancestry in case we have missing parents.
} else {
if (!inReplyTo.isEmpty()) {
//According to RFC5256 we should ignore all but the first
parentMessageId = inReplyTo.first();
}
}
mail.setExtractedMessageId(messageId);
if (!parentMessageId.isEmpty()) {
mail.setExtractedParentMessageId(parentMessageId);
}
}
void MailPropertyExtractor::newEntity(Sink::ApplicationDomain::Mail &mail)
{
MimeMessageReader mimeMessageReader(getFilePathFromMimeMessagePath(mail.getMimeMessagePath()));
auto msg = mimeMessageReader.mimeMessage();
if (msg) {
updatedIndexedProperties(mail, msg);
}
}
void MailPropertyExtractor::modifiedEntity(const Sink::ApplicationDomain::Mail &oldMail, Sink::ApplicationDomain::Mail &newMail)
{
MimeMessageReader mimeMessageReader(getFilePathFromMimeMessagePath(newMail.getMimeMessagePath()));
auto msg = mimeMessageReader.mimeMessage();
if (msg) {
updatedIndexedProperties(newMail, msg);
}
}
MimeMessageMover::MimeMessageMover() : Sink::EntityPreprocessor<ApplicationDomain::Mail>()
{
}
QString MimeMessageMover::moveMessage(const QString &oldPath, const Sink::ApplicationDomain::Mail &mail)
{
const auto directory = Sink::resourceStorageLocation(resourceInstanceIdentifier());
const auto filePath = directory + "/" + mail.identifier();
if (oldPath != filePath) {
if (!QDir().mkpath(directory)) {
SinkWarning() << "Failed to create the directory: " << directory;
}
QFile::remove(filePath);
QFile origFile(oldPath);
if (!origFile.open(QIODevice::ReadWrite)) {
SinkWarning() << "Failed to open the original file with write rights: " << origFile.errorString();
}
if (!origFile.rename(filePath)) {
SinkWarning() << "Failed to move the file from: " << oldPath << " to " << filePath << ". " << origFile.errorString();
}
origFile.close();
return filePath;
}
return oldPath;
}
void MimeMessageMover::newEntity(Sink::ApplicationDomain::Mail &mail)
{
if (!mail.getMimeMessagePath().isEmpty()) {
mail.setMimeMessagePath(moveMessage(mail.getMimeMessagePath(), mail));
}
}
void MimeMessageMover::modifiedEntity(const Sink::ApplicationDomain::Mail &oldMail, Sink::ApplicationDomain::Mail &newMail)
{
if (!newMail.getMimeMessagePath().isEmpty()) {
newMail.setMimeMessagePath(moveMessage(newMail.getMimeMessagePath(), newMail));
}
}
void MimeMessageMover::deletedEntity(const Sink::ApplicationDomain::Mail &mail)
{
QFile::remove(mail.getMimeMessagePath());
}
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