1 /*
2 SPDX-FileCopyrightText: 2009 Klaralvdalens Datakonsult AB, a KDAB Group company, info@kdab.net
3 SPDX-FileCopyrightText: 2009 Leo Franchi <lfranchi@kde.org>
4
5 SPDX-License-Identifier: LGPL-2.0-or-later
6 */
7
8 #include "job/signencryptjob.h"
9
10 #include "contentjobbase_p.h"
11 #include "job/protectedheadersjob.h"
12 #include "utils/util_p.h"
13
14 #include <QGpgME/Protocol>
15 #include <QGpgME/SignEncryptJob>
16
17 #include "messagecomposer_debug.h"
18 #include <KMime/Content>
19 #include <KMime/Headers>
20 #include <KMime/KMimeMessage>
21
22 #include <gpgme++/encryptionresult.h>
23 #include <gpgme++/global.h>
24 #include <gpgme++/signingresult.h>
25 #include <sstream>
26
27 using namespace MessageComposer;
28
29 class MessageComposer::SignEncryptJobPrivate : public ContentJobBasePrivate
30 {
31 public:
SignEncryptJobPrivate(SignEncryptJob * qq)32 SignEncryptJobPrivate(SignEncryptJob *qq)
33 : ContentJobBasePrivate(qq)
34 {
35 }
36
37 std::vector<GpgME::Key> signers;
38
39 std::vector<GpgME::Key> encKeys;
40 QStringList recipients;
41 Kleo::CryptoMessageFormat format;
42 KMime::Content *content = nullptr;
43 KMime::Message *skeletonMessage = nullptr;
44
45 bool protectedHeaders = true;
46 bool protectedHeadersObvoscate = false;
47
48 // copied from messagecomposer.cpp
binaryHint(Kleo::CryptoMessageFormat f)49 bool binaryHint(Kleo::CryptoMessageFormat f)
50 {
51 switch (f) {
52 case Kleo::SMIMEFormat:
53 case Kleo::SMIMEOpaqueFormat:
54 return true;
55 default:
56 case Kleo::OpenPGPMIMEFormat:
57 case Kleo::InlineOpenPGPFormat:
58 return false;
59 }
60 }
61
62 Q_DECLARE_PUBLIC(SignEncryptJob)
63 };
64
SignEncryptJob(QObject * parent)65 SignEncryptJob::SignEncryptJob(QObject *parent)
66 : ContentJobBase(*new SignEncryptJobPrivate(this), parent)
67 {
68 }
69
~SignEncryptJob()70 SignEncryptJob::~SignEncryptJob()
71 {
72 }
73
setContent(KMime::Content * content)74 void SignEncryptJob::setContent(KMime::Content *content)
75 {
76 Q_D(SignEncryptJob);
77
78 Q_ASSERT(content);
79
80 d->content = content;
81 }
82
setCryptoMessageFormat(Kleo::CryptoMessageFormat format)83 void SignEncryptJob::setCryptoMessageFormat(Kleo::CryptoMessageFormat format)
84 {
85 Q_D(SignEncryptJob);
86
87 // There *must* be a concrete format set at this point.
88 Q_ASSERT(format == Kleo::OpenPGPMIMEFormat || format == Kleo::InlineOpenPGPFormat || format == Kleo::SMIMEFormat || format == Kleo::SMIMEOpaqueFormat);
89 d->format = format;
90 }
91
setSigningKeys(const std::vector<GpgME::Key> & signers)92 void SignEncryptJob::setSigningKeys(const std::vector<GpgME::Key> &signers)
93 {
94 Q_D(SignEncryptJob);
95
96 d->signers = signers;
97 }
98
origContent()99 KMime::Content *SignEncryptJob::origContent()
100 {
101 Q_D(SignEncryptJob);
102
103 return d->content;
104 }
105
setEncryptionKeys(const std::vector<GpgME::Key> & keys)106 void SignEncryptJob::setEncryptionKeys(const std::vector<GpgME::Key> &keys)
107 {
108 Q_D(SignEncryptJob);
109
110 d->encKeys = keys;
111 }
112
setRecipients(const QStringList & recipients)113 void SignEncryptJob::setRecipients(const QStringList &recipients)
114 {
115 Q_D(SignEncryptJob);
116
117 d->recipients = recipients;
118 }
119
setSkeletonMessage(KMime::Message * skeletonMessage)120 void SignEncryptJob::setSkeletonMessage(KMime::Message *skeletonMessage)
121 {
122 Q_D(SignEncryptJob);
123
124 d->skeletonMessage = skeletonMessage;
125 }
126
setProtectedHeaders(bool protectedHeaders)127 void SignEncryptJob::setProtectedHeaders(bool protectedHeaders)
128 {
129 Q_D(SignEncryptJob);
130
131 d->protectedHeaders = protectedHeaders;
132 }
133
setProtectedHeadersObvoscate(bool protectedHeadersObvoscate)134 void SignEncryptJob::setProtectedHeadersObvoscate(bool protectedHeadersObvoscate)
135 {
136 Q_D(SignEncryptJob);
137
138 d->protectedHeadersObvoscate = protectedHeadersObvoscate;
139 }
140
recipients() const141 QStringList SignEncryptJob::recipients() const
142 {
143 Q_D(const SignEncryptJob);
144
145 return d->recipients;
146 }
147
encryptionKeys() const148 std::vector<GpgME::Key> SignEncryptJob::encryptionKeys() const
149 {
150 Q_D(const SignEncryptJob);
151
152 return d->encKeys;
153 }
154
doStart()155 void SignEncryptJob::doStart()
156 {
157 Q_D(SignEncryptJob);
158 Q_ASSERT(d->resultContent == nullptr); // Not processed before.
159
160 if (d->protectedHeaders && d->skeletonMessage && d->format & Kleo::OpenPGPMIMEFormat) {
161 auto pJob = new ProtectedHeadersJob;
162 pJob->setContent(d->content);
163 pJob->setSkeletonMessage(d->skeletonMessage);
164 pJob->setObvoscate(d->protectedHeadersObvoscate);
165 QObject::connect(pJob, &ProtectedHeadersJob::finished, this, [d, pJob](KJob *job) {
166 if (job->error()) {
167 return;
168 }
169 d->content = pJob->content();
170 });
171 appendSubjob(pJob);
172 }
173
174 ContentJobBase::doStart();
175 }
176
slotResult(KJob * job)177 void SignEncryptJob::slotResult(KJob *job)
178 {
179 // Q_D(SignEncryptJob);
180 if (error() || job->error()) {
181 ContentJobBase::slotResult(job);
182 return;
183 }
184 if (subjobs().size() == 2) {
185 auto pjob = static_cast<ProtectedHeadersJob *>(subjobs().last());
186 if (pjob) {
187 auto cjob = qobject_cast<ContentJobBase *>(job);
188 Q_ASSERT(cjob);
189 pjob->setContent(cjob->content());
190 }
191 }
192
193 ContentJobBase::slotResult(job);
194 }
195
process()196 void SignEncryptJob::process()
197 {
198 Q_D(SignEncryptJob);
199 Q_ASSERT(d->resultContent == nullptr); // Not processed before.
200
201 // if setContent hasn't been called, we assume that a subjob was added
202 // and we want to use that
203 if (!d->content || !d->content->hasContent()) {
204 Q_ASSERT(d->subjobContents.size() == 1);
205 d->content = d->subjobContents.constFirst();
206 }
207
208 const QGpgME::Protocol *proto = nullptr;
209 if (d->format & Kleo::AnyOpenPGP) {
210 proto = QGpgME::openpgp();
211 } else if (d->format & Kleo::AnySMIME) {
212 proto = QGpgME::smime();
213 } else {
214 return;
215 }
216 Q_ASSERT(proto);
217 // d->resultContent = new KMime::Content;
218
219 qCDebug(MESSAGECOMPOSER_LOG) << "creating signencrypt from:" << proto->name() << proto->displayName();
220
221 QByteArray encBody;
222 d->content->assemble();
223
224 // replace simple LFs by CRLFs for all MIME supporting CryptPlugs
225 // according to RfC 2633, 3.1.1 Canonicalization
226 QByteArray content;
227 if (d->format & Kleo::InlineOpenPGPFormat) {
228 content = d->content->body();
229 } else if (!(d->format & Kleo::SMIMEOpaqueFormat)) {
230 content = KMime::LFtoCRLF(d->content->encodedContent());
231 } else { // SMimeOpaque doesn't need LFtoCRLF, else it gets munged
232 content = d->content->encodedContent();
233 }
234
235 QGpgME::SignEncryptJob *job(proto->signEncryptJob(!d->binaryHint(d->format), d->format == Kleo::InlineOpenPGPFormat));
236 QObject::connect(job,
237 &QGpgME::SignEncryptJob::result,
238 this,
239 [this, d](const GpgME::SigningResult &signingResult,
240 const GpgME::EncryptionResult &encryptionResult,
241 const QByteArray &cipherText,
242 const QString &auditLogAsHtml,
243 const GpgME::Error &auditLogError) {
244 Q_UNUSED(auditLogAsHtml)
245 Q_UNUSED(auditLogError)
246 if (signingResult.error()) {
247 qCDebug(MESSAGECOMPOSER_LOG) << "signing failed:" << signingResult.error().asString();
248 setError(signingResult.error().code());
249 setErrorText(QString::fromLocal8Bit(signingResult.error().asString()));
250 emitResult();
251 return;
252 }
253 if (encryptionResult.error()) {
254 qCDebug(MESSAGECOMPOSER_LOG) << "encrypting failed:" << encryptionResult.error().asString();
255 setError(encryptionResult.error().code());
256 setErrorText(QString::fromLocal8Bit(encryptionResult.error().asString()));
257 emitResult();
258 return;
259 }
260
261 QByteArray signatureHashAlgo = signingResult.createdSignature(0).hashAlgorithmAsString();
262 d->resultContent = MessageComposer::Util::composeHeadersAndBody(d->content, cipherText, d->format, false, signatureHashAlgo);
263
264 emitResult();
265 });
266
267 const auto error = job->start(d->signers, d->encKeys, content, false);
268 if (error.code()) {
269 job->deleteLater();
270 setError(error.code());
271 setErrorText(QString::fromLocal8Bit(error.asString()));
272 emitResult();
273 }
274 }
275