File indexing completed on 2024-06-23 05:18:33

 /*
   SPDX-FileCopyrightText: 2009 Klaralvdalens Datakonsult AB, a KDAB Group company, info@kdab.net
   SPDX-FileCopyrightText: 2009 Leo Franchi <lfranchi@kde.org>
 
   SPDX-License-Identifier: LGPL-2.0-or-later
 */
 
 #include "job/signencryptjob.h"
 
 #include "contentjobbase_p.h"
 #include "job/protectedheadersjob.h"
 #include "utils/util_p.h"
 
 #include <QGpgME/Protocol>
 #include <QGpgME/SignEncryptJob>
 
 #include "messagecomposer_debug.h"
 #include <KMime/Content>
 #include <KMime/Headers>
 #include <KMime/KMimeMessage>
 
 #include <gpgme++/encryptionresult.h>
 #include <gpgme++/global.h>
 #include <gpgme++/signingresult.h>
 #include <sstream>
 
 using namespace MessageComposer;
 
 class MessageComposer::SignEncryptJobPrivate : public ContentJobBasePrivate
 {
 public:
     SignEncryptJobPrivate(SignEncryptJob *qq)
         : ContentJobBasePrivate(qq)
     {
     }
 
     std::vector<GpgME::Key> signers;
 
     std::vector<GpgME::Key> encKeys;
     QStringList recipients;
     Kleo::CryptoMessageFormat format;
     KMime::Content *content = nullptr;
     KMime::Message *skeletonMessage = nullptr;
 
     bool protectedHeaders = true;
     bool protectedHeadersObvoscate = false;
 
     // copied from messagecomposer.cpp
     bool binaryHint(Kleo::CryptoMessageFormat f)
     {
         switch (f) {
         case Kleo::SMIMEFormat:
         case Kleo::SMIMEOpaqueFormat:
             return true;
         default:
         case Kleo::OpenPGPMIMEFormat:
         case Kleo::InlineOpenPGPFormat:
             return false;
         }
     }
 
     Q_DECLARE_PUBLIC(SignEncryptJob)
 };
 
 SignEncryptJob::SignEncryptJob(QObject *parent)
     : ContentJobBase(*new SignEncryptJobPrivate(this), parent)
 {
 }
 
 SignEncryptJob::~SignEncryptJob() = default;
 
 void SignEncryptJob::setContent(KMime::Content *content)
 {
     Q_D(SignEncryptJob);
 
     Q_ASSERT(content);
 
     d->content = content;
 }
 
 void SignEncryptJob::setCryptoMessageFormat(Kleo::CryptoMessageFormat format)
 {
     Q_D(SignEncryptJob);
 
     // There *must* be a concrete format set at this point.
     Q_ASSERT(format == Kleo::OpenPGPMIMEFormat || format == Kleo::InlineOpenPGPFormat || format == Kleo::SMIMEFormat || format == Kleo::SMIMEOpaqueFormat);
     d->format = format;
 }
 
 void SignEncryptJob::setSigningKeys(const std::vector<GpgME::Key> &signers)
 {
     Q_D(SignEncryptJob);
 
     d->signers = signers;
 }
 
 KMime::Content *SignEncryptJob::origContent()
 {
     Q_D(SignEncryptJob);
 
     return d->content;
 }
 
 void SignEncryptJob::setEncryptionKeys(const std::vector<GpgME::Key> &keys)
 {
     Q_D(SignEncryptJob);
 
     d->encKeys = keys;
 }
 
 void SignEncryptJob::setRecipients(const QStringList &recipients)
 {
     Q_D(SignEncryptJob);
 
     d->recipients = recipients;
 }
 
 void SignEncryptJob::setSkeletonMessage(KMime::Message *skeletonMessage)
 {
     Q_D(SignEncryptJob);
 
     d->skeletonMessage = skeletonMessage;
 }
 
 void SignEncryptJob::setProtectedHeaders(bool protectedHeaders)
 {
     Q_D(SignEncryptJob);
 
     d->protectedHeaders = protectedHeaders;
 }
 
 void SignEncryptJob::setProtectedHeadersObvoscate(bool protectedHeadersObvoscate)
 {
     Q_D(SignEncryptJob);
 
     d->protectedHeadersObvoscate = protectedHeadersObvoscate;
 }
 
 QStringList SignEncryptJob::recipients() const
 {
     Q_D(const SignEncryptJob);
 
     return d->recipients;
 }
 
 std::vector<GpgME::Key> SignEncryptJob::encryptionKeys() const
 {
     Q_D(const SignEncryptJob);
 
     return d->encKeys;
 }
 
 void SignEncryptJob::doStart()
 {
     Q_D(SignEncryptJob);
     Q_ASSERT(d->resultContent == nullptr); // Not processed before.
 
     if (d->protectedHeaders && d->skeletonMessage && d->format & Kleo::OpenPGPMIMEFormat) {
         auto pJob = new ProtectedHeadersJob;
         pJob->setContent(d->content);
         pJob->setSkeletonMessage(d->skeletonMessage);
         pJob->setObvoscate(d->protectedHeadersObvoscate);
         QObject::connect(pJob, &ProtectedHeadersJob::finished, this, [d, pJob](KJob *job) {
             if (job->error()) {
                 return;
             }
             d->content = pJob->content();
         });
         appendSubjob(pJob);
     }
 
     ContentJobBase::doStart();
 }
 
 void SignEncryptJob::slotResult(KJob *job)
 {
     // Q_D(SignEncryptJob);
     if (error() || job->error()) {
         ContentJobBase::slotResult(job);
         return;
     }
     if (subjobs().size() == 2) {
         auto pjob = static_cast<ProtectedHeadersJob *>(subjobs().last());
         if (pjob) {
             auto cjob = qobject_cast<ContentJobBase *>(job);
             Q_ASSERT(cjob);
             pjob->setContent(cjob->content());
         }
     }
 
     ContentJobBase::slotResult(job);
 }
 
 void SignEncryptJob::process()
 {
     Q_D(SignEncryptJob);
     Q_ASSERT(d->resultContent == nullptr); // Not processed before.
 
     // if setContent hasn't been called, we assume that a subjob was added
     // and we want to use that
     if (!d->content || !d->content->hasContent()) {
         Q_ASSERT(d->subjobContents.size() == 1);
         d->content = d->subjobContents.constFirst();
     }
 
     const QGpgME::Protocol *proto = nullptr;
     if (d->format & Kleo::AnyOpenPGP) {
         proto = QGpgME::openpgp();
     } else if (d->format & Kleo::AnySMIME) {
         proto = QGpgME::smime();
     } else {
         return;
     }
     Q_ASSERT(proto);
     // d->resultContent = new KMime::Content;
 
     qCDebug(MESSAGECOMPOSER_LOG) << "creating signencrypt from:" << proto->name() << proto->displayName();
 
     QByteArray encBody;
     d->content->assemble();
 
     // replace simple LFs by CRLFs for all MIME supporting CryptPlugs
     // according to RfC 2633, 3.1.1 Canonicalization
     QByteArray content;
     if (d->format & Kleo::InlineOpenPGPFormat) {
         content = d->content->body();
     } else if (!(d->format & Kleo::SMIMEOpaqueFormat)) {
         content = KMime::LFtoCRLF(d->content->encodedContent());
     } else { // SMimeOpaque doesn't need LFtoCRLF, else it gets munged
         content = d->content->encodedContent();
     }
 
     QGpgME::SignEncryptJob *job(proto->signEncryptJob(!d->binaryHint(d->format), d->format == Kleo::InlineOpenPGPFormat));
     QObject::connect(job,
                      &QGpgME::SignEncryptJob::result,
                      this,
                      [this, d](const GpgME::SigningResult &signingResult,
                                const GpgME::EncryptionResult &encryptionResult,
                                const QByteArray &cipherText,
                                const QString &auditLogAsHtml,
                                const GpgME::Error &auditLogError) {
                          Q_UNUSED(auditLogAsHtml)
                          Q_UNUSED(auditLogError)
                          if (signingResult.error()) {
                              qCDebug(MESSAGECOMPOSER_LOG) << "signing failed:" << signingResult.error().asString();
                              setError(signingResult.error().code());
                              setErrorText(QString::fromLocal8Bit(signingResult.error().asString()));
                              emitResult();
                              return;
                          }
                          if (encryptionResult.error()) {
                              qCDebug(MESSAGECOMPOSER_LOG) << "encrypting failed:" << encryptionResult.error().asString();
                              setError(encryptionResult.error().code());
                              setErrorText(QString::fromLocal8Bit(encryptionResult.error().asString()));
                              emitResult();
                              return;
                          }
 
                          QByteArray signatureHashAlgo = signingResult.createdSignature(0).hashAlgorithmAsString();
                          d->resultContent = MessageComposer::Util::composeHeadersAndBody(d->content, cipherText, d->format, false, signatureHashAlgo);
 
                          emitResult();
                      });
 
     const auto error = job->start(d->signers, d->encKeys, content, false);
     if (error.code()) {
         job->deleteLater();
         setError(error.code());
         setErrorText(QString::fromLocal8Bit(error.asString()));
         emitResult();
     }
 }
 
 #include "moc_signencryptjob.cpp"