KIMAP2

fetchjob.cpp
1/*
2 Copyright (c) 2009 Kevin Ottens <ervin@kde.org>
3 Copyright (c) 2017 Christian Mollekopf <mollekopf@kolabsys.com>
4
5 This library is free software; you can redistribute it and/or modify it
6 under the terms of the GNU Library General Public License as published by
7 the Free Software Foundation; either version 2 of the License, or (at your
8 option) any later version.
9
10 This library is distributed in the hope that it will be useful, but WITHOUT
11 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
12 FITNESS FOR A PARTICULAR PURPOSE. See the GNU Library General Public
13 License for more details.
14
15 You should have received a copy of the GNU Library General Public License
16 along with this library; see the file COPYING.LIB. If not, write to the
17 Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
18 02110-1301, USA.
19*/
20
21#include "fetchjob.h"
22
23#include "kimap_debug.h"
24
25#include "job_p.h"
26#include "message_p.h"
27#include "session_p.h"
28
29namespace KIMAP2
30{
31class FetchJobPrivate : public JobPrivate
32{
33public:
34 FetchJobPrivate(FetchJob *job, Session *session, const QString &name)
35 : JobPrivate(session, name)
36 , q(job)
37 , uidBased(false)
38 , avoidParsing(false)
39 { }
40
41 ~FetchJobPrivate()
42 { }
43
44 void parseBodyStructure(const QByteArray &structure, int &pos, KMime::Content *content);
45 void parsePart(const QByteArray &structure, int &pos, KMime::Content *content);
46 QByteArray parseString(const QByteArray &structure, int &pos);
47 QByteArray parseSentence(const QByteArray &structure, int &pos);
48 void skipLeadingSpaces(const QByteArray &structure, int &pos);
49
50 FetchJob *const q;
51
52 ImapSet set;
53 bool uidBased;
54 FetchJob::FetchScope scope;
55 QString selectedMailBox;
56 bool avoidParsing;
57};
58}
59
60using namespace KIMAP2;
61
62FetchJob::FetchScope::FetchScope():
63 mode(FetchScope::Content),
64 changedSince(0),
65 gmailExtensionsEnabled(false)
66{
67
68}
69
70FetchJob::FetchJob(Session *session)
71 : Job(*new FetchJobPrivate(this, session, "Fetch"))
72{
73}
74
75FetchJob::~FetchJob()
76{
77}
78
79void FetchJob::setAvoidParsing(bool avoid)
80{
81 Q_D(FetchJob);
82 d->avoidParsing = avoid;
83}
84
85void FetchJob::setSequenceSet(const ImapSet &set)
86{
87 Q_D(FetchJob);
88 Q_ASSERT(!set.isEmpty());
89 d->set = set;
90}
91
92ImapSet FetchJob::sequenceSet() const
93{
94 Q_D(const FetchJob);
95 return d->set;
96}
97
98void FetchJob::setUidBased(bool uidBased)
99{
100 Q_D(FetchJob);
101 d->uidBased = uidBased;
102}
103
104bool FetchJob::isUidBased() const
105{
106 Q_D(const FetchJob);
107 return d->uidBased;
108}
109
110void FetchJob::setScope(const FetchScope &scope)
111{
112 Q_D(FetchJob);
113 d->scope = scope;
114}
115
116FetchJob::FetchScope FetchJob::scope() const
117{
118 Q_D(const FetchJob);
119 return d->scope;
120}
121
122void FetchJob::doStart()
123{
124 Q_D(FetchJob);
125
126 d->set.optimize();
127 QByteArray parameters = d->set.toImapSequenceSet() + ' ';
128 Q_ASSERT(!parameters.trimmed().isEmpty());
129
130 switch (d->scope.mode) {
131 case FetchScope::Headers:
132 if (d->scope.parts.isEmpty()) {
133 parameters += "(RFC822.SIZE INTERNALDATE BODY.PEEK[HEADER.FIELDS (TO FROM MESSAGE-ID REFERENCES IN-REPLY-TO SUBJECT DATE)] FLAGS UID";
134 } else {
135 parameters += '(';
136 foreach (const QByteArray &part, d->scope.parts) {
137 parameters += "BODY.PEEK[" + part + ".MIME] ";
138 }
139 parameters += "UID";
140 }
141 break;
142 case FetchScope::Flags:
143 parameters += "(FLAGS UID";
144 break;
145 case FetchScope::Structure:
146 parameters += "(BODYSTRUCTURE UID";
147 break;
148 case FetchScope::Content:
149 if (d->scope.parts.isEmpty()) {
150 parameters += "(BODY.PEEK[] UID";
151 } else {
152 parameters += '(';
153 foreach (const QByteArray &part, d->scope.parts) {
154 parameters += "BODY.PEEK[" + part + "] ";
155 }
156 parameters += "UID";
157 }
158 break;
159 case FetchScope::Full:
160 parameters += "(RFC822.SIZE INTERNALDATE BODY.PEEK[] FLAGS UID";
161 break;
162 case FetchScope::HeaderAndContent:
163 if (d->scope.parts.isEmpty()) {
164 parameters += "(BODY.PEEK[] FLAGS UID";
165 } else {
166 parameters += "(BODY.PEEK[HEADER.FIELDS (TO FROM MESSAGE-ID REFERENCES IN-REPLY-TO SUBJECT DATE)]";
167 foreach (const QByteArray &part, d->scope.parts) {
168 parameters += " BODY.PEEK[" + part + ".MIME] BODY.PEEK[" + part + "]"; //krazy:exclude=doublequote_chars
169 }
170 parameters += " FLAGS UID";
171 }
172 break;
173 case FetchScope::FullHeaders:
174 parameters += "(RFC822.SIZE INTERNALDATE BODY.PEEK[HEADER] FLAGS UID";
175 break;
176 }
177
178 if (d->scope.gmailExtensionsEnabled) {
179 parameters += " X-GM-LABELS X-GM-MSGID X-GM-THRID";
180 }
181 parameters += ")";
182
183 if (d->scope.changedSince > 0) {
184 parameters += " (CHANGEDSINCE " + QByteArray::number(d->scope.changedSince) + ")";
185 }
186
187 QByteArray command = "FETCH";
188 if (d->uidBased) {
189 command = "UID " + command;
190 }
191
192 d->selectedMailBox = d->m_session->selectedMailBox();
193 d->sendCommand(command, parameters);
194}
195
196void FetchJob::handleResponse(const Message &response)
197{
198 Q_D(FetchJob);
199
200 if (handleErrorReplies(response) == NotHandled) {
201 if (response.content.size() == 4 &&
202 response.content[2].toString() == "FETCH" &&
203 response.content[3].type() == Message::Part::List) {
204
205 const QList<QByteArray> content = response.content[3].toList();
206
207 Result result;
208 result.sequenceNumber = response.content[1].toString().toLongLong();
209 bool shouldParseMessage = false;
210 for (QList<QByteArray>::ConstIterator it = content.constBegin();
211 it != content.constEnd(); ++it) {
212 QByteArray str = *it;
213 ++it;
214 if (it == content.constEnd()) { // Uh oh, message was truncated?
215 qCWarning(KIMAP2_LOG) << "FETCH reply got truncated, skipping.";
216 qCWarning(KIMAP2_LOG) << response.toString();
217 qCWarning(KIMAP2_LOG) << result.sequenceNumber;
218 qCWarning(KIMAP2_LOG) << content;
219 qCWarning(KIMAP2_LOG) << str;
220 break;
221 }
222
223 if (str == "UID") {
224 result.uid = it->toLongLong();
225 } else if (str == "RFC822.SIZE") {
226 result.size = it->toLongLong();
227 } else if (str == "INTERNALDATE") {
228 if (!result.message) {
229 result.message = MessagePtr(new KMime::Message);
230 }
231 result.message->date()->setDateTime(QDateTime::fromString(QLatin1String(*it), Qt::RFC2822Date));
232 } else if (str == "FLAGS") {
233 if ((*it).startsWith('(') && (*it).endsWith(')')) {
234 QByteArray str = *it;
235 str.chop(1);
236 str.remove(0, 1);
237 result.flags = str.split(' ');
238 } else {
239 result.flags << *it;
240 }
241 } else if (str == "X-GM-LABELS") {
242 result.attributes << qMakePair<QByteArray, QVariant>("X-GM-LABELS", *it);
243 } else if (str == "X-GM-THRID") {
244 result.attributes << qMakePair<QByteArray, QVariant>("X-GM-THRID", *it);
245 } else if (str == "X-GM-MSGID") {
246 result.attributes << qMakePair<QByteArray, QVariant>("X-GM-MSGID", *it);
247 } else if (str == "BODYSTRUCTURE") {
248 if (!result.message) {
249 result.message = MessagePtr(new KMime::Message);
250 }
251 int pos = 0;
252 d->parseBodyStructure(*it, pos, result.message.data());
253 result.message->assemble();
254 } else if (str.startsWith("BODY[")) { //krazy:exclude=strings
255 if (!str.endsWith(']')) { // BODY[ ... ] might have been split, skip until we find the ]
256 while (it != content.constEnd() && !(*it).endsWith(']')) {
257 ++it;
258 }
259 }
260
261 int index;
262 if ((index = str.indexOf("HEADER")) > 0 || (index = str.indexOf("MIME")) > 0) { // headers
263 if (str[index - 1] == '.') {
264 QByteArray partId = str.mid(5, index - 6);
265 if (!result.parts.contains(partId)) {
266 result.parts[partId] = ContentPtr(new KMime::Content);
267 }
268 result.parts[partId]->setHead(*it);
269 result.parts[partId]->parse();
270 } else {
271 if (!result.message) {
272 result.message = MessagePtr(new KMime::Message);
273 }
274 shouldParseMessage = true;
275 result.message->setHead(*it);
276 }
277 } else { // full payload
278 if (str == "BODY[]") {
279 if (!result.message) {
280 result.message = MessagePtr(new KMime::Message);
281 }
282 shouldParseMessage = true;
283 result.message->setContent(KMime::CRLFtoLF(*it));
284 } else {
285 QByteArray partId = str.mid(5, str.size() - 6);
286 if (!result.parts.contains(partId)) {
287 result.parts[partId] = ContentPtr(new KMime::Content);
288 }
289 result.parts[partId]->setBody(*it);
290 result.parts[partId]->parse();
291 }
292 }
293 }
294 }
295
296 if (result.message && shouldParseMessage && !d->avoidParsing) {
297 result.message->parse();
298 }
299 emit resultReceived(result);
300 }
301 }
302}
303
304void FetchJobPrivate::parseBodyStructure(const QByteArray &structure, int &pos, KMime::Content *content)
305{
306 skipLeadingSpaces(structure, pos);
307
308 if (structure[pos] != '(') {
309 return;
310 }
311
312 pos++;
313
314 if (structure[pos] != '(') { // simple part
315 pos--;
316 parsePart(structure, pos, content);
317 } else { // multi part
318 content->contentType()->setMimeType("MULTIPART/MIXED");
319 while (pos < structure.size() && structure[pos] == '(') {
320 KMime::Content *child = new KMime::Content;
321 content->addContent(child);
322 parseBodyStructure(structure, pos, child);
323 child->assemble();
324 }
325
326 QByteArray subType = parseString(structure, pos);
327 content->contentType()->setMimeType("MULTIPART/" + subType);
328
329 QByteArray parameters = parseSentence(structure, pos); // FIXME: Read the charset
330 if (parameters.contains("BOUNDARY")) {
331 content->contentType()->setBoundary(parameters.remove(0, parameters.indexOf("BOUNDARY") + 11).split('\"')[0]);
332 }
333
334 QByteArray disposition = parseSentence(structure, pos);
335 if (disposition.contains("INLINE")) {
336 content->contentDisposition()->setDisposition(KMime::Headers::CDinline);
337 } else if (disposition.contains("ATTACHMENT")) {
338 content->contentDisposition()->setDisposition(KMime::Headers::CDattachment);
339 }
340
341 parseSentence(structure, pos); // Ditch the body language
342 }
343
344 // Consume what's left
345 while (pos < structure.size() && structure[pos] != ')') {
346 skipLeadingSpaces(structure, pos);
347 parseSentence(structure, pos);
348 skipLeadingSpaces(structure, pos);
349 }
350
351 pos++;
352}
353
354void FetchJobPrivate::parsePart(const QByteArray &structure, int &pos, KMime::Content *content)
355{
356 if (structure[pos] != '(') {
357 return;
358 }
359
360 pos++;
361
362 QByteArray mainType = parseString(structure, pos);
363 QByteArray subType = parseString(structure, pos);
364
365 content->contentType()->setMimeType(mainType + '/' + subType);
366
367 parseSentence(structure, pos); // Ditch the parameters... FIXME: Read it to get charset and name
368 parseString(structure, pos); // ... and the id
369
370 content->contentDescription()->from7BitString(parseString(structure, pos));
371
372 parseString(structure, pos); // Ditch the encoding too
373 parseString(structure, pos); // ... and the size
374 parseString(structure, pos); // ... and the line count
375
376 QByteArray disposition = parseSentence(structure, pos);
377 if (disposition.contains("INLINE")) {
378 content->contentDisposition()->setDisposition(KMime::Headers::CDinline);
379 } else if (disposition.contains("ATTACHMENT")) {
380 content->contentDisposition()->setDisposition(KMime::Headers::CDattachment);
381 }
382 if ((content->contentDisposition()->disposition() == KMime::Headers::CDattachment ||
383 content->contentDisposition()->disposition() == KMime::Headers::CDinline) &&
384 disposition.contains("FILENAME")) {
385 QByteArray filename = disposition.remove(0, disposition.indexOf("FILENAME") + 11).split('\"')[0];
386 content->contentDisposition()->setFilename(QLatin1String(filename));
387 }
388
389 // Consume what's left
390 while (pos < structure.size() && structure[pos] != ')') {
391 skipLeadingSpaces(structure, pos);
392 parseSentence(structure, pos);
393 skipLeadingSpaces(structure, pos);
394 }
395}
396
397QByteArray FetchJobPrivate::parseSentence(const QByteArray &structure, int &pos)
398{
399 QByteArray result;
400 int stack = 0;
401
402 skipLeadingSpaces(structure, pos);
403
404 if (structure[pos] != '(') {
405 return parseString(structure, pos);
406 }
407
408 int start = pos;
409
410 do {
411 switch (structure[pos]) {
412 case '(':
413 pos++;
414 stack++;
415 break;
416 case ')':
417 pos++;
418 stack--;
419 break;
420 case '[':
421 pos++;
422 stack++;
423 break;
424 case ']':
425 pos++;
426 stack--;
427 break;
428 default:
429 skipLeadingSpaces(structure, pos);
430 parseString(structure, pos);
431 skipLeadingSpaces(structure, pos);
432 break;
433 }
434 } while (pos < structure.size() && stack != 0);
435
436 result = structure.mid(start, pos - start);
437
438 return result;
439}
440
441QByteArray FetchJobPrivate::parseString(const QByteArray &structure, int &pos)
442{
443 QByteArray result;
444
445 skipLeadingSpaces(structure, pos);
446
447 int start = pos;
448 bool foundSlash = false;
449
450 // quoted string
451 if (structure[pos] == '"') {
452 pos++;
453 Q_FOREVER {
454 if (structure[pos] == '\\')
455 {
456 pos += 2;
457 foundSlash = true;
458 continue;
459 }
460 if (structure[pos] == '"')
461 {
462 result = structure.mid(start + 1, pos - start - 1);
463 pos++;
464 break;
465 }
466 pos++;
467 }
468 } else { // unquoted string
469 Q_FOREVER {
470 if (structure[pos] == ' ' ||
471 structure[pos] == '(' ||
472 structure[pos] == ')' ||
473 structure[pos] == '[' ||
474 structure[pos] == ']' ||
475 structure[pos] == '\n' ||
476 structure[pos] == '\r' ||
477 structure[pos] == '"')
478 {
479 break;
480 }
481 if (structure[pos] == '\\')
482 {
483 foundSlash = true;
484 }
485 pos++;
486 }
487
488 result = structure.mid(start, pos - start);
489
490 // transform unquoted NIL
491 if (result == "NIL") {
492 result.clear();
493 }
494 }
495
496 // simplify slashes
497 if (foundSlash) {
498 while (result.contains("\\\"")) {
499 result.replace("\\\"", "\"");
500 }
501 while (result.contains("\\\\")) {
502 result.replace("\\\\", "\\");
503 }
504 }
505
506 return result;
507}
508
509void FetchJobPrivate::skipLeadingSpaces(const QByteArray &structure, int &pos)
510{
511 while (pos < structure.size() && structure[pos] == ' ') {
512 pos++;
513 }
514}
515
516#include "moc_fetchjob.cpp"
KIMAP2::FetchJob::FetchScope
Used to indicate what message data should be fetched.
Definition fetchjob.h:75
KIMAP2::FetchJob::FetchScope::Full
@ Full
Fetch the complete message.
Definition fetchjob.h:115
KIMAP2::FetchJob::FetchScope::Headers
@ Headers
Fetch RFC-2822 or MIME message headers.
Definition fetchjob.h:96
KIMAP2::FetchJob::FetchScope::Flags
@ Flags
Fetch the message flags (the UID is also fetched)
Definition fetchjob.h:100
KIMAP2::FetchJob::FetchScope::Content
@ Content
Fetch the message content (the UID is also fetched)
Definition fetchjob.h:111
KIMAP2::FetchJob::FetchScope::FullHeaders
@ FullHeaders
Fetch message size (in octets), internal date of the message, flags, UID and all RFC822 headers.
Definition fetchjob.h:139
KIMAP2::FetchJob::FetchScope::HeaderAndContent
@ HeaderAndContent
Fetch the message MIME headers and the content of parts specified in the parts field.
Definition fetchjob.h:131
KIMAP2::FetchJob::FetchScope::Structure
@ Structure
Fetch the MIME message body structure (the UID is also fetched)
Definition fetchjob.h:104
KIMAP2::FetchJob
Fetch message data from the server.
Definition fetchjob.h:60
KIMAP2::FetchJob::setUidBased
void setUidBased(bool uidBased)
Set how the sequence set should be interpreted.
Definition fetchjob.cpp:98
KIMAP2::FetchJob::sequenceSet
ImapSet sequenceSet() const
The messages that will be fetched.
Definition fetchjob.cpp:92
KIMAP2::FetchJob::scope
FetchScope scope() const
Specifies what data will be fetched.
Definition fetchjob.cpp:116
KIMAP2::FetchJob::setAvoidParsing
void setAvoidParsing(bool)
Avoid calling parse() on returned KMime::Messages.
Definition fetchjob.cpp:79
KIMAP2::FetchJob::setSequenceSet
void setSequenceSet(const ImapSet &set)
Set which messages to fetch data for.
Definition fetchjob.cpp:85
KIMAP2::FetchJob::setScope
void setScope(const FetchScope &scope)
Sets what data should be fetched.
Definition fetchjob.cpp:110
KIMAP2::FetchJob::isUidBased
bool isUidBased() const
How to interpret the sequence set.
Definition fetchjob.cpp:104
KIMAP2::ImapSet
Represents a set of natural numbers (1->∞) in a as compact as possible form.
Definition imapset.h:142
KIMAP2::ImapSet::isEmpty
bool isEmpty() const
Returns true if this set doesn't contains any values.
Definition imapset.cpp:314
KJob::result
void result(KJob *job)
KMime::Content::contentType
const Headers::ContentType * contentType() const
KMime::Content::contentDisposition
const Headers::ContentDisposition * contentDisposition() const
KMime::Content::contentDescription
const Headers::ContentDescription * contentDescription() const
KMime::Headers::ContentDisposition::setDisposition
void setDisposition(contentDisposition disp)
KMime::Headers::ContentDisposition::disposition
contentDisposition disposition() const
KMime::Headers::ContentDisposition::setFilename
void setFilename(const QString &filename)
KMime::Headers::ContentType::setMimeType
void setMimeType(const QByteArray &mimeType)
KMime::Headers::ContentType::setBoundary
void setBoundary(const QByteArray &s)
KMime::Headers::Generics::Unstructured::from7BitString
void from7BitString(QByteArrayView s) override
start
Q_SCRIPTABLE Q_NOREPLY void start()
KGameStandardAction::name
QString name(GameStandardAction id)
QByteArray::chop
void chop(qsizetype n)
QByteArray::clear
void clear()
QByteArray::contains
bool contains(QByteArrayView bv) const const
QByteArray::endsWith
bool endsWith(QByteArrayView bv) const const
QByteArray::indexOf
qsizetype indexOf(QByteArrayView bv, qsizetype from) const const
QByteArray::isEmpty
bool isEmpty() const const
QByteArray::mid
QByteArray mid(qsizetype pos, qsizetype len) const const
QByteArray::number
QByteArray number(double n, char format, int precision)
QByteArray::remove
QByteArray & remove(qsizetype pos, qsizetype len)
QByteArray::replace
QByteArray & replace(QByteArrayView before, QByteArrayView after)
QByteArray::size
qsizetype size() const const
QByteArray::split
QList< QByteArray > split(char sep) const const
QByteArray::startsWith
bool startsWith(QByteArrayView bv) const const
QByteArray::trimmed
QByteArray trimmed() const const
QDateTime::fromString
QDateTime fromString(QStringView string, QStringView format, QCalendar cal)
QList::toList
QList< T > toList() const const
QList::constBegin
const_iterator constBegin() const const
QList::constEnd
const_iterator constEnd() const const
Qt::RFC2822Date
RFC2822Date
Q_D
Q_D(Todo)
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