1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
|
/*
* 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 <QTextDocument>
#include <KMime/KMime/KMimeMessage>
#include "pipeline.h"
#include "fulltextindex.h"
#include "definitions.h"
#include "applicationdomaintype.h"
using namespace Sink;
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 QList<QPair<QString, QString>> processPart(KMime::Content* content)
{
if (KMime::Headers::ContentType* type = content->contentType(false)) {
if (type->isMultipart() && !type->isSubtype("encrypted")) {
QList<QPair<QString, QString>> list;
for (const auto c : content->contents()) {
list << processPart(c);
}
return list;
} else if (type->isHTMLText()) {
// Only get HTML content, if no plain text content
QTextDocument doc;
doc.setHtml(content->decodedText());
return {{{}, {doc.toPlainText()}}};
} else if (type->isEmpty()) {
return {{{}, {content->decodedText()}}};
}
}
return {};
}
void MailPropertyExtractor::updatedIndexedProperties(Sink::ApplicationDomain::Mail &mail, const QByteArray &data)
{
if (data.isEmpty()) {
return;
}
auto msg = KMime::Message::Ptr(new KMime::Message);
msg->setContent(KMime::CRLFtoLF(data));
msg->parse();
if (!msg) {
return;
}
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());
//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();
}
}
//The rest should never change, unless we didn't have the headers available initially.
auto messageId = msg->messageID(true)->identifier();
if (messageId.isEmpty()) {
//reuse an existing messageis (on modification)
auto existing = mail.getMessageId();
if (existing.isEmpty()) {
auto tmp = KMime::Message::Ptr::create();
auto header = tmp->messageID(true);
header->generate("kube.kde.org");
messageId = header->as7BitString();
SinkWarning() << "Message id is empty, generating one: " << messageId;
} else {
messageId = existing;
}
}
mail.setExtractedMessageId(messageId);
if (!parentMessageId.isEmpty()) {
mail.setExtractedParentMessageId(parentMessageId);
}
QList<QPair<QString, QString>> contentToIndex;
contentToIndex.append({{}, msg->subject()->asUnicodeString()});
if (KMime::Content* mainBody = msg->mainBodyPart("text/plain")) {
contentToIndex.append({{}, mainBody->decodedText()});
} else {
contentToIndex << processPart(msg.data());
}
contentToIndex.append({{}, msg->from(true)->asUnicodeString()});
contentToIndex.append({{}, msg->to(true)->asUnicodeString()});
contentToIndex.append({{}, msg->cc(true)->asUnicodeString()});
contentToIndex.append({{}, msg->bcc(true)->asUnicodeString()});
//Prepare content for indexing;
mail.setProperty("index", QVariant::fromValue(contentToIndex));
}
void MailPropertyExtractor::newEntity(Sink::ApplicationDomain::Mail &mail)
{
updatedIndexedProperties(mail, mail.getMimeMessage());
}
void MailPropertyExtractor::modifiedEntity(const Sink::ApplicationDomain::Mail &oldMail, Sink::ApplicationDomain::Mail &newMail)
{
updatedIndexedProperties(newMail, newMail.getMimeMessage());
}
|
