decryptverifytask.cpp
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decryptverifytask.cpp
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	/* -- mode: c++; c-basic-offset:4 --
	decryptverifytask.cpp

	This file is part of Kleopatra, the KDE keymanager
	SPDX-FileCopyrightText: 2008 Klarälvdalens Datakonsult AB

	SPDX-License-Identifier: GPL-2.0-or-later
	*/

	#include <config-kleopatra.h>

	#include "decryptverifytask.h"

	#include <QGpgME/Protocol>
	#include <QGpgME/VerifyOpaqueJob>
	#include <QGpgME/VerifyDetachedJob>
	#include <QGpgME/DecryptJob>
	#include <QGpgME/DecryptVerifyJob>
	#if QGPGME_SUPPORTS_ARCHIVE_JOBS
	#include <QGpgME/DecryptVerifyArchiveJob>
	#endif

	#include <Libkleo/AuditLogEntry>
	#include <Libkleo/Compliance>
	#include <Libkleo/Dn>
	#include <Libkleo/KleoException>
	#include <Libkleo/Stl_Util>
	#include <Libkleo/KeyCache>
	#include <Libkleo/Predicates>
	#include <Libkleo/Formatting>
	#include <Libkleo/Classify>

	#include <utils/detail_p.h>
	#include <utils/input.h>
	#include <utils/output.h>
	#include <utils/kleo_assert.h>
	#include <Libkleo/GnuPG>

	#include <KMime/HeaderParsing>

	#include <gpgme++/error.h>
	#include <gpgme++/key.h>
	#include <gpgme++/verificationresult.h>
	#include <gpgme++/decryptionresult.h>
	#include <gpgme++/context.h>

	#include <gpg-error.h>

	#include "kleopatra_debug.h"
	#include <KLocalizedString>
	#include <QLocale>

	#include <QByteArray>
	#include <QDateTime>
	#include <QIODevice>
	#include <QStringList>
	#include <QTextDocument> // Qt::escape

	#include <algorithm>
	#include <sstream>

	using namespace Kleo::Crypto;
	using namespace Kleo;
	using namespace GpgME;
	using namespace KMime::Types;

	namespace
	{

	static AuditLogEntry auditLogFromSender(QObject *sender)
	{
	return AuditLogEntry::fromJob(qobject_cast<const QGpgME::Job *>(sender));
	}

	static bool addrspec_equal(const AddrSpec &lhs, const AddrSpec &rhs, Qt::CaseSensitivity cs)
	{
	return lhs.localPart.compare(rhs.localPart, cs) == 0 && lhs.domain.compare(rhs.domain, Qt::CaseInsensitive) == 0;
	}

	static bool mailbox_equal(const Mailbox &lhs, const Mailbox &rhs, Qt::CaseSensitivity cs)
	{
	return addrspec_equal(lhs.addrSpec(), rhs.addrSpec(), cs);
	}

	static std::string stripAngleBrackets(const std::string &str)
	{
	if (str.empty()) {
	return str;
	}
	if (str[0] == '<' && str[str.size() - 1] == '>') {
	return str.substr(1, str.size() - 2);
	}
	return str;
	}

	static std::string email(const UserID &uid)
	{

	if (uid.parent().protocol() == OpenPGP) {
	if (const char *const email = uid.email()) {
	return stripAngleBrackets(email);
	} else {
	return std::string();
	}
	}

	Q_ASSERT(uid.parent().protocol() == CMS);

	if (const char *const id = uid.id())
	if (*id == '<') {
	return stripAngleBrackets(id);
	} else {
	return DN(id)[QStringLiteral("EMAIL")].trimmed().toUtf8().constData();
	}
	else {
	return std::string();
	}
	}

	static Mailbox mailbox(const UserID &uid)
	{
	const std::string e = email(uid);
	Mailbox mbox;
	if (!e.empty()) {
	mbox.setAddress(e.c_str());
	}
	return mbox;
	}

	static std::vector<Mailbox> extractMailboxes(const Key &key)
	{
	std::vector<Mailbox> res;
	const auto userIDs{key.userIDs()};
	for (const UserID &id : userIDs) {
	const Mailbox mbox = mailbox(id);
	if (!mbox.addrSpec().isEmpty()) {
	res.push_back(mbox);
	}
	}
	return res;
	}

	static std::vector<Mailbox> extractMailboxes(const std::vector<Key> &signers)
	{
	std::vector<Mailbox> res;
	for (const Key &i : signers) {
	const std::vector<Mailbox> bxs = extractMailboxes(i);
	res.insert(res.end(), bxs.begin(), bxs.end());
	}
	return res;
	}

	static bool keyContainsMailbox(const Key &key, const Mailbox &mbox)
	{
	const std::vector<Mailbox> mbxs = extractMailboxes(key);
	return std::find_if(mbxs.cbegin(), mbxs.cend(),
	[mbox](const Mailbox &m) {
	return mailbox_equal(mbox, m, Qt::CaseInsensitive);
	}) != mbxs.cend();
	}

	static bool keysContainMailbox(const std::vector<Key> &keys, const Mailbox &mbox)
	{
	return std::find_if(keys.cbegin(), keys.cend(),
	[mbox](const Key &key) {
	return keyContainsMailbox(key, mbox);
	}) != keys.cend();
	}

	static bool relevantInDecryptVerifyContext(const VerificationResult &r)
	{
	// for D/V operations, we ignore verification results which are not errors and contain
	// no signatures (which means that the data was just not signed)

	return (r.error() && r.error().code() != GPG_ERR_DECRYPT_FAILED) \|\| r.numSignatures() > 0;
	}

	static QString signatureSummaryToString(int summary)
	{
	if (summary & Signature::None) {
	return i18n("Error: Signature not verified");
	} else if (summary & Signature::Valid \|\| summary & Signature::Green) {
	return i18n("Good signature");
	} else if (summary & Signature::KeyRevoked) {
	return i18n("Signing certificate was revoked");
	} else if (summary & Signature::KeyExpired) {
	return i18n("Signing certificate is expired");
	} else if (summary & Signature::KeyMissing) {
	return i18n("Certificate is not available");
	} else if (summary & Signature::SigExpired) {
	return i18n("Signature expired");
	} else if (summary & Signature::CrlMissing) {
	return i18n("CRL missing");
	} else if (summary & Signature::CrlTooOld) {
	return i18n("CRL too old");
	} else if (summary & Signature::BadPolicy) {
	return i18n("Bad policy");
	} else if (summary & Signature::SysError) {
	return i18n("System error"); //### retrieve system error details?
	} else if (summary & Signature::Red) {
	return i18n("Bad signature");
	}return QString();
	}

	static QString formatValidSignatureWithTrustLevel(const UserID &id)
	{
	if (id.isNull()) {
	return QString();
	}
	switch (id.validity()) {
	case UserID::Marginal:
	return i18n("The signature is valid but the trust in the certificate's validity is only marginal.");
	case UserID::Full:
	return i18n("The signature is valid and the certificate's validity is fully trusted.");
	case UserID::Ultimate:
	return i18n("The signature is valid and the certificate's validity is ultimately trusted.");
	case UserID::Never:
	return i18n("The signature is valid but the certificate's validity is <em>not trusted</em>.");
	case UserID::Unknown:
	return i18n("The signature is valid but the certificate's validity is unknown.");
	case UserID::Undefined:
	default:
	return i18n("The signature is valid but the certificate's validity is undefined.");
	}
	}

	static QString renderKeyLink(const QString &fpr, const QString &text)
	{
	return QStringLiteral("<a href=\"key:%1\">%2</a>").arg(fpr, text);
	}

	static QString renderKey(const Key &key)
	{
	if (key.isNull()) {
	return i18n("Unknown certificate");
	}

	if (key.primaryFingerprint() && strlen(key.primaryFingerprint()) > 16 && key.numUserIDs()) {
	const QString text = QStringLiteral("%1 (%2)").arg(Formatting::prettyNameAndEMail(key).toHtmlEscaped()).arg(
	Formatting::prettyID(QString::fromLocal8Bit(key.primaryFingerprint()).right(16).toLatin1().constData()));
	return renderKeyLink(QLatin1String(key.primaryFingerprint()), text);
	}

	return renderKeyLink(QLatin1String(key.primaryFingerprint()), Formatting::prettyID(key.primaryFingerprint()));
	}

	static QString renderKeyEMailOnlyNameAsFallback(const Key &key)
	{
	if (key.isNull()) {
	return i18n("Unknown certificate");
	}
	const QString email = Formatting::prettyEMail(key);
	const QString user = !email.isEmpty() ? email : Formatting::prettyName(key);
	return renderKeyLink(QLatin1String(key.primaryFingerprint()), user);
	}

	static QString formatDate(const QDateTime &dt)
	{
	return QLocale().toString(dt);
	}
	static QString formatSigningInformation(const Signature &sig)
	{
	if (sig.isNull()) {
	return QString();
	}
	const QDateTime dt = sig.creationTime() != 0 ? QDateTime::fromSecsSinceEpoch(quint32(sig.creationTime())) : QDateTime();
	QString text;
	Key key = sig.key();
	if (dt.isValid()) {
	text = i18nc("1 is a date", "Signature created on %1", formatDate(dt)) + QStringLiteral("<br>");
	}
	if (key.isNull()) {
	return text += i18n("With unavailable certificate:") + QStringLiteral("<br>ID: 0x%1").arg(QString::fromLatin1(sig.fingerprint()).toUpper());
	}
	text += i18n("With certificate:") + QStringLiteral("<br>") + renderKey(key);

	if (DeVSCompliance::isCompliant()) {
	text +=
	(QStringLiteral("<br/>")
	+ (sig.isDeVs()
	? i18nc("%1 is a placeholder for the name of a compliance mode. E.g. NATO RESTRICTED compliant or VS-NfD compliant",
	"The signature is %1", DeVSCompliance::name(true))
	: i18nc("%1 is a placeholder for the name of a compliance mode. E.g. NATO RESTRICTED compliant or VS-NfD compliant",
	"The signature <b>is not</b> %1.", DeVSCompliance::name(true))));
	}

	return text;
	}

	static QString strikeOut(const QString &str, bool strike)
	{
	return QString(strike ? QStringLiteral("<s>%1</s>") : QStringLiteral("%1")).arg(str.toHtmlEscaped());
	}

	static QString formatInputOutputLabel(const QString &input, const QString &output, bool inputDeleted, bool outputDeleted)
	{
	if (output.isEmpty()) {
	return strikeOut(input, inputDeleted);
	}
	return i18nc("Input file --> Output file (rarr is arrow", "%1 → %2",
	strikeOut(input, inputDeleted),
	strikeOut(output, outputDeleted));
	}

	static bool IsErrorOrCanceled(const GpgME::Error &err)
	{
	return err \|\| err.isCanceled();
	}

	static bool IsErrorOrCanceled(const Result &res)
	{
	return IsErrorOrCanceled(res.error());
	}

	static bool IsBad(const Signature &sig)
	{
	return sig.summary() & Signature::Red;
	}

	static bool IsGoodOrValid(const Signature &sig)
	{
	return (sig.summary() & Signature::Valid) \|\| (sig.summary() & Signature::Green);
	}

	static UserID findUserIDByMailbox(const Key &key, const Mailbox &mbox)
	{
	const auto userIDs{key.userIDs()};
	for (const UserID &id : userIDs)
	if (mailbox_equal(mailbox(id), mbox, Qt::CaseInsensitive)) {
	return id;
	}
	return UserID();
	}

	static void updateKeys(const VerificationResult &result) {
	// This little hack works around the problem that GnuPG / GpgME does not
	// provide Key information in a verification result. The Key object is
	// a dummy just holding the KeyID. This hack ensures that all available
	// keys are fetched from the backend and are populated
	for (const auto &sig: result.signatures()) {
	// Update key information
	sig.key(true, true);
	}
	}

	}

	class DecryptVerifyResult::SenderInfo
	{
	public:
	explicit SenderInfo(const Mailbox &infSender, const std::vector<Key> &signers_) : informativeSender(infSender), signers(signers_) {}
	const Mailbox informativeSender;
	const std::vector<Key> signers;
	bool hasInformativeSender() const
	{
	return !informativeSender.addrSpec().isEmpty();
	}
	bool conflicts() const
	{
	return hasInformativeSender() && hasKeys() && !keysContainMailbox(signers, informativeSender);
	}
	bool hasKeys() const
	{
	return std::any_of(signers.cbegin(), signers.cend(), [](const Key &key) { return !key.isNull(); });
	}
	std::vector<Mailbox> signerMailboxes() const
	{
	return extractMailboxes(signers);
	}
	};

	namespace
	{

	static Task::Result::VisualCode codeForVerificationResult(const VerificationResult &res)
	{
	if (res.isNull()) {
	return Task::Result::NeutralSuccess;
	}

	const std::vector<Signature> sigs = res.signatures();
	if (sigs.empty()) {
	return Task::Result::Warning;
	}

	if (std::find_if(sigs.begin(), sigs.end(), IsBad) != sigs.end()) {
	return Task::Result::Danger;
	}

	if ((size_t)std::count_if(sigs.begin(), sigs.end(), IsGoodOrValid) == sigs.size()) {
	return Task::Result::AllGood;
	}

	return Task::Result::Warning;
	}

	static QString formatVerificationResultOverview(const VerificationResult &res, const DecryptVerifyResult::SenderInfo &info)
	{
	if (res.isNull()) {
	return QString();
	}

	const Error err = res.error();

	if (err.isCanceled()) {
	return i18n("<b>Verification canceled.</b>");
	} else if (err) {
	return i18n("<b>Verification failed: %1.</b>", QString::fromLocal8Bit(err.asString()).toHtmlEscaped());
	}

	const std::vector<Signature> sigs = res.signatures();

	if (sigs.empty()) {
	return i18n("<b>No signatures found.</b>");
	}

	const uint bad = std::count_if(sigs.cbegin(), sigs.cend(), IsBad);
	if (bad > 0) {
	return i18np("<b>Invalid signature.</b>", "<b>%1 invalid signatures.</b>", bad);
	}
	const uint warn = std::count_if(sigs.cbegin(), sigs.cend(), [](const Signature &sig) { return !IsGoodOrValid(sig); });
	if (warn == sigs.size()) {
	return i18np("<b>The data could not be verified.</b>", "<b>%1 signatures could not be verified.</b>", warn);
	}

	//Good signature:
	QString text;
	if (sigs.size() == 1) {
	text = i18n("<b>Valid signature by %1</b>", renderKeyEMailOnlyNameAsFallback(sigs[0].key()));
	if (info.conflicts())
	text += i18n("<br/><b>Warning:</b> The sender's mail address is not stored in the %1 used for signing.",
	renderKeyLink(QLatin1String(sigs[0].key().primaryFingerprint()), i18n("certificate")));
	} else {
	text = i18np("<b>Valid signature.</b>", "<b>%1 valid signatures.</b>", sigs.size());
	if (info.conflicts()) {
	text += i18n("<br/><b>Warning:</b> The sender's mail address is not stored in the certificates used for signing.");
	}
	}

	return text;
	}

	static QString formatDecryptionResultOverview(const DecryptionResult &result, const QString &errorString = QString())
	{
	const Error err = result.error();

	if (err.isCanceled()) {
	return i18n("<b>Decryption canceled.</b>");
	}
	else if (result.isLegacyCipherNoMDC()) {
	return i18n("<b>Decryption failed: %1.</b>", i18n("No integrity protection (MDC)."));
	}
	else if (!errorString.isEmpty()) {
	return i18n("<b>Decryption failed: %1.</b>", errorString.toHtmlEscaped());
	} else if (err) {
	return i18n("<b>Decryption failed: %1.</b>", QString::fromLocal8Bit(err.asString()).toHtmlEscaped());
	}
	return i18n("<b>Decryption succeeded.</b>");
	}

	static QString formatSignature(const Signature &sig, const DecryptVerifyResult::SenderInfo &info)
	{
	if (sig.isNull()) {
	return QString();
	}

	const QString text = formatSigningInformation(sig) + QLatin1String("<br/>");
	const Key key = sig.key();

	// Green
	if (sig.summary() & Signature::Valid) {
	const UserID id = findUserIDByMailbox(key, info.informativeSender);
	return text + formatValidSignatureWithTrustLevel(!id.isNull() ? id : key.userID(0));
	}

	// Red
	if ((sig.summary() & Signature::Red)) {
	const QString ret = text + i18n("The signature is invalid: %1", signatureSummaryToString(sig.summary()));
	if (sig.summary() & Signature::SysError) {
	return ret + QStringLiteral(" (%1)").arg(QString::fromLocal8Bit(sig.status().asString()));
	}
	return ret;
	}

	// Key missing
	if ((sig.summary() & Signature::KeyMissing)) {
	return text + i18n("You can search the certificate on a keyserver or import it from a file.");
	}

	// Yellow
	if ((sig.validity() & Signature::Validity::Undefined) \|\|
	(sig.validity() & Signature::Validity::Unknown) \|\|
	(sig.summary() == Signature::Summary::None)) {
	return text + (key.protocol() == OpenPGP ? i18n("The used key is not certified by you or any trusted person.") :
	i18n("The used certificate is not certified by a trustworthy Certificate Authority or the Certificate Authority is unknown."));
	}

	// Catch all fall through
	const QString ret = text + i18n("The signature is invalid: %1", signatureSummaryToString(sig.summary()));
	if (sig.summary() & Signature::SysError) {
	return ret + QStringLiteral(" (%1)").arg(QString::fromLocal8Bit(sig.status().asString()));
	}
	return ret;
	}

	static QStringList format(const std::vector<Mailbox> &mbxs)
	{
	QStringList res;
	std::transform(mbxs.cbegin(), mbxs.cend(), std::back_inserter(res),
	[](const Mailbox &mbox) {
	return mbox.prettyAddress();
	});
	return res;
	}

	static QString formatVerificationResultDetails(const VerificationResult &res, const DecryptVerifyResult::SenderInfo &info, const QString &errorString)
	{
	if ((res.error().code() == GPG_ERR_EIO \|\| res.error().code() == GPG_ERR_NO_DATA) && !errorString.isEmpty()) {
	return i18n("Input error: %1", errorString);
	}

	const std::vector<Signature> sigs = res.signatures();
	QString details;
	for (const Signature &sig : sigs) {
	details += formatSignature(sig, info) + QLatin1Char('\n');
	}
	details = details.trimmed();
	details.replace(QLatin1Char('\n'), QStringLiteral("<br/><br/>"));
	if (info.conflicts()) {
	details += i18n("<p>The sender's address %1 is not stored in the certificate. Stored: %2</p>", info.informativeSender.prettyAddress(), format(info.signerMailboxes()).join(i18nc("separator for a list of e-mail addresses", ", ")));
	}
	return details;
	}

	static QString formatRecipientsDetails(const std::vector<Key> &knownRecipients, unsigned int numRecipients)
	{
	if (numRecipients == 0) {
	return {};
	}

	if (knownRecipients.empty()) {
	return QLatin1String("<i>") +
	i18np("One unknown recipient.", "%1 unknown recipients.", numRecipients) +
	QLatin1String("</i>");
	}

	QString details = i18np("Recipient:", "Recipients:", numRecipients);

	if (numRecipients == 1) {
	details += QLatin1Char(' ') + renderKey(knownRecipients.front());
	} else {
	details += QLatin1String("<ul>");
	for (const Key &key : knownRecipients) {
	details += QLatin1String("<li>") + renderKey(key) + QLatin1String("</li>");
	}
	if (knownRecipients.size() < numRecipients) {
	details += QLatin1String("<li><i>") +
	i18np("One unknown recipient", "%1 unknown recipients",
	numRecipients - knownRecipients.size()) +
	QLatin1String("</i></li>");
	}
	details += QLatin1String("</ul>");
	}

	return details;
	}

	static QString formatDecryptionResultDetails(const DecryptionResult &res, const std::vector<Key> &recipients,
	const QString &errorString, bool isSigned, const QPointer<Task> &task)
	{
	if ((res.error().code() == GPG_ERR_EIO \|\| res.error().code() == GPG_ERR_NO_DATA) && !errorString.isEmpty()) {
	return i18n("Input error: %1", errorString);
	}

	if (res.isNull() \|\| res.error() \|\| res.error().isCanceled()) {
	return formatRecipientsDetails(recipients, res.numRecipients());
	}

	QString details;

	if (DeVSCompliance::isCompliant()) {
	details += ((res.isDeVs()
	? i18nc("%1 is a placeholder for the name of a compliance mode. E.g. NATO RESTRICTED compliant or VS-NfD compliant",
	"The decryption is %1.", DeVSCompliance::name(true))
	: i18nc("%1 is a placeholder for the name of a compliance mode. E.g. NATO RESTRICTED compliant or VS-NfD compliant",
	"The decryption <b>is not</b> %1.", DeVSCompliance::name(true)))
	+ QStringLiteral("<br/>"));
	}

	if (res.fileName()) {
	const auto decVerifyTask = qobject_cast<AbstractDecryptVerifyTask*> (task.data());
	if (decVerifyTask) {
	const auto embedFileName = QString::fromUtf8(res.fileName()).toHtmlEscaped();

	if (embedFileName != decVerifyTask->outputLabel()) {
	details += i18n("Embedded file name: '%1'", embedFileName);
	details += QStringLiteral("<br/>");
	}
	}
	}

	if (!isSigned) {
	details += i18n("<b>Note:</b> You cannot be sure who encrypted this message as it is not signed.")
	+ QLatin1String("<br/>");
	}

	if (res.isLegacyCipherNoMDC()) {
	details += i18nc("Integrity protection was missing because an old cipher was used.",
	"<b>Hint:</b> If this file was encrypted before the year 2003 it is "
	"likely that the file is legitimate. This is because back "
	"then integrity protection was not widely used.") + QStringLiteral("<br/><br/>") +
	i18nc("The user is offered to force decrypt a non integrity protected message. With the strong advice to re-encrypt it.",
	"If you are confident that the file was not manipulated you should re-encrypt it after you have forced the decryption.") +
	QStringLiteral("<br/><br/>");
	}

	details += formatRecipientsDetails(recipients, res.numRecipients());

	return details;
	}

	static QString formatDecryptVerifyResultOverview(const DecryptionResult &dr, const VerificationResult &vr, const DecryptVerifyResult::SenderInfo &info)
	{
	if (IsErrorOrCanceled(dr) \|\| !relevantInDecryptVerifyContext(vr)) {
	return formatDecryptionResultOverview(dr);
	}
	return formatVerificationResultOverview(vr, info);
	}

	static QString formatDecryptVerifyResultDetails(const DecryptionResult &dr,
	const VerificationResult &vr,
	const std::vector<Key> &recipients,
	const DecryptVerifyResult::SenderInfo &info,
	const QString &errorString,
	const QPointer<Task> &task)
	{
	const QString drDetails = formatDecryptionResultDetails(dr, recipients, errorString, relevantInDecryptVerifyContext(vr), task);
	if (IsErrorOrCanceled(dr) \|\| !relevantInDecryptVerifyContext(vr)) {
	return drDetails;
	}
	return drDetails + (drDetails.isEmpty() ? QString() : QStringLiteral("<br/>")) + formatVerificationResultDetails(vr, info, errorString);
	}

	} // anon namespace

	class DecryptVerifyResult::Private
	{
	DecryptVerifyResult *const q;
	public:
	Private(DecryptVerifyOperation type,
	const VerificationResult &vr,
	const DecryptionResult &dr,
	const QByteArray &stuff,
	const QString &fileName,
	const GpgME::Error &error,
	const QString &errString,
	const QString &input,
	const QString &output,
	const AuditLogEntry &auditLog,
	Task *parentTask,
	const Mailbox &informativeSender,
	DecryptVerifyResult *qq) :
	q(qq),
	m_type(type),
	m_verificationResult(vr),
	m_decryptionResult(dr),
	m_stuff(stuff),
	m_fileName(fileName),
	m_error(error),
	m_errorString(errString),
	m_inputLabel(input),
	m_outputLabel(output),
	m_auditLog(auditLog),
	m_parentTask(QPointer<Task>(parentTask)),
	m_informativeSender(informativeSender)
	{
	}

	QString label() const
	{
	return formatInputOutputLabel(m_inputLabel, m_outputLabel, false, q->hasError());
	}

	DecryptVerifyResult::SenderInfo makeSenderInfo() const;

	bool isDecryptOnly() const
	{
	return m_type == Decrypt;
	}
	bool isVerifyOnly() const
	{
	return m_type == Verify;
	}
	bool isDecryptVerify() const
	{
	return m_type == DecryptVerify;
	}
	DecryptVerifyOperation m_type;
	VerificationResult m_verificationResult;
	DecryptionResult m_decryptionResult;
	QByteArray m_stuff;
	QString m_fileName;
	GpgME::Error m_error;
	QString m_errorString;
	QString m_inputLabel;
	QString m_outputLabel;
	const AuditLogEntry m_auditLog;
	QPointer <Task> m_parentTask;
	const Mailbox m_informativeSender;
	};

	DecryptVerifyResult::SenderInfo DecryptVerifyResult::Private::makeSenderInfo() const
	{
	return SenderInfo(m_informativeSender, KeyCache::instance()->findSigners(m_verificationResult));
	}

	std::shared_ptr<DecryptVerifyResult> AbstractDecryptVerifyTask::fromDecryptResult(const DecryptionResult &dr, const QByteArray &plaintext, const AuditLogEntry &auditLog)
	{
	return std::shared_ptr<DecryptVerifyResult>(new DecryptVerifyResult(
	Decrypt,
	VerificationResult(),
	dr,
	plaintext,
	{},
	{},
	QString(),
	inputLabel(),
	outputLabel(),
	auditLog,
	this,
	informativeSender()));
	}

	std::shared_ptr<DecryptVerifyResult> AbstractDecryptVerifyTask::fromDecryptResult(const GpgME::Error &err, const QString &what, const AuditLogEntry &auditLog)
	{
	return std::shared_ptr<DecryptVerifyResult>(new DecryptVerifyResult(
	Decrypt,
	VerificationResult(),
	DecryptionResult(err),
	QByteArray(),
	{},
	err,
	what,
	inputLabel(),
	outputLabel(),
	auditLog,
	this,
	informativeSender()));
	}

	std::shared_ptr<DecryptVerifyResult> AbstractDecryptVerifyTask::fromDecryptVerifyResult(const DecryptionResult &dr, const VerificationResult &vr, const QByteArray &plaintext, const QString &fileName, const AuditLogEntry &auditLog)
	{
	const auto err = dr.error().code() ? dr.error() : vr.error();
	return std::shared_ptr<DecryptVerifyResult>(new DecryptVerifyResult(
	DecryptVerify,
	vr,
	dr,
	plaintext,
	fileName,
	err,
	QString(),
	inputLabel(),
	outputLabel(),
	auditLog,
	this,
	informativeSender()));
	}

	std::shared_ptr<DecryptVerifyResult> AbstractDecryptVerifyTask::fromDecryptVerifyResult(const GpgME::Error &err, const QString &details, const AuditLogEntry &auditLog)
	{
	return std::shared_ptr<DecryptVerifyResult>(new DecryptVerifyResult(
	DecryptVerify,
	VerificationResult(),
	DecryptionResult(err),
	QByteArray(),
	{},
	err,
	details,
	inputLabel(),
	outputLabel(),
	auditLog,
	this,
	informativeSender()));
	}

	std::shared_ptr<DecryptVerifyResult> AbstractDecryptVerifyTask::fromVerifyOpaqueResult(const VerificationResult &vr, const QByteArray &plaintext, const AuditLogEntry &auditLog)
	{
	return std::shared_ptr<DecryptVerifyResult>(new DecryptVerifyResult(
	Verify,
	vr,
	DecryptionResult(),
	plaintext,
	{},
	{},
	QString(),
	inputLabel(),
	outputLabel(),
	auditLog,
	this,
	informativeSender()));
	}
	std::shared_ptr<DecryptVerifyResult> AbstractDecryptVerifyTask::fromVerifyOpaqueResult(const GpgME::Error &err, const QString &details, const AuditLogEntry &auditLog)
	{
	return std::shared_ptr<DecryptVerifyResult>(new DecryptVerifyResult(
	Verify,
	VerificationResult(err),
	DecryptionResult(),
	QByteArray(),
	{},
	err,
	details,
	inputLabel(),
	outputLabel(),
	auditLog,
	this,
	informativeSender()));
	}

	std::shared_ptr<DecryptVerifyResult> AbstractDecryptVerifyTask::fromVerifyDetachedResult(const VerificationResult &vr, const AuditLogEntry &auditLog)
	{
	return std::shared_ptr<DecryptVerifyResult>(new DecryptVerifyResult(
	Verify,
	vr,
	DecryptionResult(),
	QByteArray(),
	{},
	{},
	QString(),
	inputLabel(),
	outputLabel(),
	auditLog,
	this,
	informativeSender()));
	}
	std::shared_ptr<DecryptVerifyResult> AbstractDecryptVerifyTask::fromVerifyDetachedResult(const GpgME::Error &err, const QString &details, const AuditLogEntry &auditLog)
	{
	return std::shared_ptr<DecryptVerifyResult>(new DecryptVerifyResult(
	Verify,
	VerificationResult(err),
	DecryptionResult(),
	QByteArray(),
	{},
	err,
	details,
	inputLabel(),
	outputLabel(),
	auditLog,
	this,
	informativeSender()));
	}

	DecryptVerifyResult::DecryptVerifyResult(DecryptVerifyOperation type,
	const VerificationResult &vr,
	const DecryptionResult &dr,
	const QByteArray &stuff,
	const QString &fileName,
	const GpgME::Error &error,
	const QString &errString,
	const QString &inputLabel,
	const QString &outputLabel,
	const AuditLogEntry &auditLog,
	Task *parentTask,
	const Mailbox &informativeSender)
	: Task::Result(), d(new Private(type, vr, dr, stuff, fileName, error, errString, inputLabel, outputLabel, auditLog, parentTask, informativeSender, this))
	{
	}

	QString DecryptVerifyResult::overview() const
	{
	QString ov;
	if (d->isDecryptOnly()) {
	ov += formatDecryptionResultOverview(d->m_decryptionResult);
	} else if (d->isVerifyOnly()) {
	ov += formatVerificationResultOverview(d->m_verificationResult, d->makeSenderInfo());
	} else {
	ov += formatDecryptVerifyResultOverview(d->m_decryptionResult, d->m_verificationResult, d->makeSenderInfo());
	}
	if (ov.size() + d->label().size() > 120) {
	// Avoid ugly breaks
	ov = QStringLiteral("<br>") + ov;
	}
	return i18nc("label: result example: foo.sig: Verification failed. ", "%1: %2", d->label(), ov);
	}

	QString DecryptVerifyResult::details() const
	{
	if (d->isDecryptOnly()) {
	return formatDecryptionResultDetails(d->m_decryptionResult,
	KeyCache::instance()->findRecipients(d->m_decryptionResult),
	errorString(), false, d->m_parentTask);
	}
	if (d->isVerifyOnly()) {
	return formatVerificationResultDetails(d->m_verificationResult, d->makeSenderInfo(), errorString());
	}
	return formatDecryptVerifyResultDetails(d->m_decryptionResult,
	d->m_verificationResult, KeyCache::instance()->findRecipients(
	d->m_decryptionResult), d->makeSenderInfo(), errorString(),
	d->m_parentTask);
	}

	GpgME::Error DecryptVerifyResult::error() const
	{
	return d->m_error;
	}

	QString DecryptVerifyResult::errorString() const
	{
	return d->m_errorString;
	}

	AuditLogEntry DecryptVerifyResult::auditLog() const
	{
	return d->m_auditLog;
	}

	QPointer<Task> DecryptVerifyResult::parentTask() const
	{
	return d->m_parentTask;
	}

	Task::Result::VisualCode DecryptVerifyResult::code() const
	{
	if ((d->m_type == DecryptVerify \|\| d->m_type == Verify) && relevantInDecryptVerifyContext(verificationResult())) {
	return codeForVerificationResult(verificationResult());
	}
	return hasError() ? NeutralError : NeutralSuccess;
	}

	GpgME::VerificationResult DecryptVerifyResult::verificationResult() const
	{
	return d->m_verificationResult;
	}

	GpgME::DecryptionResult DecryptVerifyResult::decryptionResult() const
	{
	return d->m_decryptionResult;
	}

	QString DecryptVerifyResult::fileName() const
	{
	return d->m_fileName;
	}

	class AbstractDecryptVerifyTask::Private
	{
	public:
	Mailbox informativeSender;
	};

	AbstractDecryptVerifyTask::AbstractDecryptVerifyTask(QObject *parent) : Task(parent), d(new Private) {}

	AbstractDecryptVerifyTask::~AbstractDecryptVerifyTask() {}

	Mailbox AbstractDecryptVerifyTask::informativeSender() const
	{
	return d->informativeSender;
	}

	void AbstractDecryptVerifyTask::setInformativeSender(const Mailbox &sender)
	{
	d->informativeSender = sender;
	}

	class DecryptVerifyTask::Private
	{
	DecryptVerifyTask *const q;
	public:
	explicit Private(DecryptVerifyTask *qq)
	: q{qq}
	{
	}

	void startDecryptVerifyJob();
	#if QGPGME_SUPPORTS_ARCHIVE_JOBS
	void startDecryptVerifyArchiveJob();
	#endif

	void slotResult(const DecryptionResult &, const VerificationResult &, const QByteArray & = {});

	std::shared_ptr<Input> m_input;
	std::shared_ptr<Output> m_output;
	const QGpgME::Protocol *m_backend = nullptr;
	Protocol m_protocol = UnknownProtocol;
	bool m_ignoreMDCError = false;
	bool m_extractArchive = false;
	QString m_outputDirectory;
	};

	void DecryptVerifyTask::Private::slotResult(const DecryptionResult &dr, const VerificationResult &vr, const QByteArray &plainText)
	{
	updateKeys(vr);
	{
	std::stringstream ss;
	ss << dr << '\n' << vr;
	qCDebug(KLEOPATRA_LOG) << ss.str().c_str();
	}
	const AuditLogEntry auditLog = auditLogFromSender(q->sender());
	if (m_output) {
	if (dr.error().code() \|\| vr.error().code()) {
	m_output->cancel();
	} else {
	try {
	kleo_assert(!dr.isNull() \|\| !vr.isNull());
	m_output->finalize();
	} catch (const GpgME::Exception &e) {
	q->emitResult(q->fromDecryptResult(e.error(), QString::fromLocal8Bit(e.what()), auditLog));
	return;
	} catch (const std::exception &e) {
	q->emitResult(q->fromDecryptResult(Error::fromCode(GPG_ERR_INTERNAL), i18n("Caught exception: %1", QString::fromLocal8Bit(e.what())), auditLog));
	return;
	} catch (...) {
	q->emitResult(q->fromDecryptResult(Error::fromCode(GPG_ERR_INTERNAL), i18n("Caught unknown exception"), auditLog));
	return;
	}
	}
	}
	const int drErr = dr.error().code();
	const QString errorString = m_output ? m_output->errorString() : QString{};
	if (((drErr == GPG_ERR_EIO \|\| drErr == GPG_ERR_NO_DATA) && !errorString.isEmpty()) \|\|
	(m_output && m_output->failed())) {
	q->emitResult(q->fromDecryptResult(drErr ? dr.error() : Error::fromCode(GPG_ERR_EIO),
	errorString, auditLog));
	return;
	}

	q->emitResult(q->fromDecryptVerifyResult(dr, vr, plainText, m_output ? m_output->fileName() : QString{}, auditLog));
	}

	DecryptVerifyTask::DecryptVerifyTask(QObject *parent) : AbstractDecryptVerifyTask(parent), d(new Private(this))
	{
	}

	DecryptVerifyTask::~DecryptVerifyTask()
	{
	}

	void DecryptVerifyTask::setInput(const std::shared_ptr<Input> &input)
	{
	d->m_input = input;
	kleo_assert(d->m_input && d->m_input->ioDevice());
	}

	void DecryptVerifyTask::setOutput(const std::shared_ptr<Output> &output)
	{
	d->m_output = output;
	kleo_assert(d->m_output && d->m_output->ioDevice());
	}

	void DecryptVerifyTask::setProtocol(Protocol prot)
	{
	kleo_assert(prot != UnknownProtocol);
	d->m_protocol = prot;
	d->m_backend = prot == GpgME::OpenPGP ? QGpgME::openpgp() : QGpgME::smime();
	kleo_assert(d->m_backend);
	}

	void DecryptVerifyTask::autodetectProtocolFromInput()
	{
	if (!d->m_input) {
	return;
	}
	const Protocol p = findProtocol(d->m_input->classification());
	if (p == UnknownProtocol) {
	throw Exception(gpg_error(GPG_ERR_NOTHING_FOUND), i18n("Could not determine whether this is an S/MIME or an OpenPGP signature/ciphertext - maybe it is neither ciphertext nor a signature?"), Exception::MessageOnly);
	}
	setProtocol(p);
	}

	QString DecryptVerifyTask::label() const
	{
	return i18n("Decrypting: %1...", d->m_input->label());
	}

	unsigned long long DecryptVerifyTask::inputSize() const
	{
	return d->m_input ? d->m_input->size() : 0;
	}

	QString DecryptVerifyTask::inputLabel() const
	{
	return d->m_input ? d->m_input->label() : QString();
	}

	QString DecryptVerifyTask::outputLabel() const
	{
	return d->m_output ? d->m_output->label() : d->m_outputDirectory;
	}

	Protocol DecryptVerifyTask::protocol() const
	{
	return d->m_protocol;
	}

	void DecryptVerifyTask::cancel()
	{

	}

	static void ensureIOOpen(QIODevice input, QIODevice output)
	{
	if (input && !input->isOpen()) {
	input->open(QIODevice::ReadOnly);
	}
	if (output && !output->isOpen()) {
	output->open(QIODevice::WriteOnly);
	}
	}

	void DecryptVerifyTask::setIgnoreMDCError(bool value)
	{
	d->m_ignoreMDCError = value;
	}

	void DecryptVerifyTask::setExtractArchive(bool extract)
	{
	d->m_extractArchive = extract;
	}

	void DecryptVerifyTask::setOutputDirectory(const QString &directory)
	{
	d->m_outputDirectory = directory;
	}

	#if QGPGME_SUPPORTS_ARCHIVE_JOBS
	static bool archiveJobsCanBeUsed(GpgME::Protocol protocol)
	{
	return (protocol == GpgME::OpenPGP) && QGpgME::DecryptVerifyArchiveJob::isSupported();
	}
	#endif

	void DecryptVerifyTask::doStart()
	{
	kleo_assert(d->m_backend);
	#if QGPGME_SUPPORTS_ARCHIVE_JOBS
	if (d->m_extractArchive && archiveJobsCanBeUsed(d->m_protocol)) {
	d->startDecryptVerifyArchiveJob();
	} else
	#endif
	{
	d->startDecryptVerifyJob();
	}
	}

	static void setIgnoreMDCErrorFlag(QGpgME::Job *job, bool ignoreMDCError)
	{
	if (ignoreMDCError) {
	qCDebug(KLEOPATRA_LOG) << "Modifying job to ignore MDC errors.";
	auto ctx = QGpgME::Job::context(job);
	if (!ctx) {
	qCWarning(KLEOPATRA_LOG) << "Failed to get context for job";
	} else {
	const auto err = ctx->setFlag("ignore-mdc-error", "1");
	if (err) {
	qCWarning(KLEOPATRA_LOG) << "Failed to set ignore mdc errors" << err.asString();
	}
	}
	}
	}

	void DecryptVerifyTask::Private::startDecryptVerifyJob()
	{
	try {
	QGpgME::DecryptVerifyJob *const job = m_backend->decryptVerifyJob();
	kleo_assert(job);
	setIgnoreMDCErrorFlag(job, m_ignoreMDCError);
	QObject::connect(job, &QGpgME::DecryptVerifyJob::result, q, [this](const GpgME::DecryptionResult &decryptResult, const GpgME::VerificationResult &verifyResult, const QByteArray &plainText) {
	slotResult(decryptResult, verifyResult, plainText);
	});
	#if QGPGME_JOB_HAS_NEW_PROGRESS_SIGNALS
	connect(job, &QGpgME::Job::jobProgress, q, &DecryptVerifyTask::setProgress);
	#else
	QObject::connect(job, &QGpgME::Job::progress, q, [this](const QString &, int processed, int total) {
	q->setProgress(processed, total);
	});
	#endif
	ensureIOOpen(m_input->ioDevice().get(), m_output->ioDevice().get());
	job->start(m_input->ioDevice(), m_output->ioDevice());
	} catch (const GpgME::Exception &e) {
	q->emitResult(q->fromDecryptVerifyResult(e.error(), QString::fromLocal8Bit(e.what()), AuditLogEntry()));
	} catch (const std::exception &e) {
	q->emitResult(q->fromDecryptVerifyResult(Error::fromCode(GPG_ERR_INTERNAL), i18n("Caught exception: %1", QString::fromLocal8Bit(e.what())), AuditLogEntry()));
	} catch (...) {
	q->emitResult(q->fromDecryptVerifyResult(Error::fromCode(GPG_ERR_INTERNAL), i18n("Caught unknown exception"), AuditLogEntry()));
	}
	}

	#if QGPGME_SUPPORTS_ARCHIVE_JOBS
	void DecryptVerifyTask::Private::startDecryptVerifyArchiveJob()
	{
	auto *const job = m_backend->decryptVerifyArchiveJob();
	kleo_assert(job);
	setIgnoreMDCErrorFlag(job, m_ignoreMDCError);
	job->setOutputDirectory(m_outputDirectory);
	connect(job, &QGpgME::DecryptVerifyArchiveJob::result, q, [this](const GpgME::DecryptionResult &decryptResult, const GpgME::VerificationResult &verifyResult) {
	slotResult(decryptResult, verifyResult);
	});
	#if QGPGME_JOB_HAS_NEW_PROGRESS_SIGNALS
	connect(job, &QGpgME::Job::jobProgress, q, &DecryptVerifyTask::setProgress);
	#else
	connect(job, &QGpgME::Job::progress, q, [this](const QString &, int processed, int total) {
	q->setProgress(processed, total);
	});
	#endif
	ensureIOOpen(m_input->ioDevice().get(), nullptr);
	const auto err = job->start(m_input->ioDevice());
	if (err) {
	q->emitResult(q->fromDecryptVerifyResult(err, {}, {}));
	}
	}
	#endif

	class DecryptTask::Private
	{
	DecryptTask *const q;
	public:
	explicit Private(DecryptTask *qq)
	: q{qq}
	{
	}

	void slotResult(const DecryptionResult &, const QByteArray &);

	void registerJob(QGpgME::DecryptJob *job)
	{
	q->connect(job, SIGNAL(result(GpgME::DecryptionResult,QByteArray)),
	q, SLOT(slotResult(GpgME::DecryptionResult,QByteArray)));
	#if QGPGME_JOB_HAS_NEW_PROGRESS_SIGNALS
	q->connect(job, &QGpgME::Job::jobProgress, q, &DecryptTask::setProgress);
	#else
	q->connect(job, &QGpgME::Job::progress, q, [this](const QString &, int processed, int total) {
	q->setProgress(processed, total);
	});
	#endif
	}

	std::shared_ptr<Input> m_input;
	std::shared_ptr<Output> m_output;
	const QGpgME::Protocol *m_backend = nullptr;
	Protocol m_protocol = UnknownProtocol;
	};

	void DecryptTask::Private::slotResult(const DecryptionResult &result, const QByteArray &plainText)
	{
	{
	std::stringstream ss;
	ss << result;
	qCDebug(KLEOPATRA_LOG) << ss.str().c_str();
	}
	const AuditLogEntry auditLog = auditLogFromSender(q->sender());
	if (result.error().code()) {
	m_output->cancel();
	} else {
	try {
	kleo_assert(!result.isNull());
	m_output->finalize();
	} catch (const GpgME::Exception &e) {
	q->emitResult(q->fromDecryptResult(e.error(), QString::fromLocal8Bit(e.what()), auditLog));
	return;
	} catch (const std::exception &e) {
	q->emitResult(q->fromDecryptResult(Error::fromCode(GPG_ERR_INTERNAL), i18n("Caught exception: %1", QString::fromLocal8Bit(e.what())), auditLog));
	return;
	} catch (...) {
	q->emitResult(q->fromDecryptResult(Error::fromCode(GPG_ERR_INTERNAL), i18n("Caught unknown exception"), auditLog));
	return;
	}
	}

	const int drErr = result.error().code();
	const QString errorString = m_output->errorString();
	if (((drErr == GPG_ERR_EIO \|\| drErr == GPG_ERR_NO_DATA) && !errorString.isEmpty()) \|\|
	m_output->failed()) {
	q->emitResult(q->fromDecryptResult(result.error() ? result.error() : Error::fromCode(GPG_ERR_EIO),
	errorString, auditLog));
	return;
	}

	q->emitResult(q->fromDecryptResult(result, plainText, auditLog));
	}

	DecryptTask::DecryptTask(QObject *parent) : AbstractDecryptVerifyTask(parent), d(new Private(this))
	{
	}

	DecryptTask::~DecryptTask()
	{
	}

	void DecryptTask::setInput(const std::shared_ptr<Input> &input)
	{
	d->m_input = input;
	kleo_assert(d->m_input && d->m_input->ioDevice());
	}

	void DecryptTask::setOutput(const std::shared_ptr<Output> &output)
	{
	d->m_output = output;
	kleo_assert(d->m_output && d->m_output->ioDevice());
	}

	void DecryptTask::setProtocol(Protocol prot)
	{
	kleo_assert(prot != UnknownProtocol);
	d->m_protocol = prot;
	d->m_backend = (prot == GpgME::OpenPGP) ? QGpgME::openpgp() : QGpgME::smime();
	kleo_assert(d->m_backend);
	}

	void DecryptTask::autodetectProtocolFromInput()
	{
	if (!d->m_input) {
	return;
	}
	const Protocol p = findProtocol(d->m_input->classification());
	if (p == UnknownProtocol) {
	throw Exception(gpg_error(GPG_ERR_NOTHING_FOUND), i18n("Could not determine whether this was S/MIME- or OpenPGP-encrypted - maybe it is not ciphertext at all?"), Exception::MessageOnly);
	}
	setProtocol(p);
	}

	QString DecryptTask::label() const
	{
	return i18n("Decrypting: %1...", d->m_input->label());
	}

	unsigned long long DecryptTask::inputSize() const
	{
	return d->m_input ? d->m_input->size() : 0;
	}

	QString DecryptTask::inputLabel() const
	{
	return d->m_input ? d->m_input->label() : QString();
	}

	QString DecryptTask::outputLabel() const
	{
	return d->m_output ? d->m_output->label() : QString();
	}

	Protocol DecryptTask::protocol() const
	{
	return d->m_protocol;
	}

	void DecryptTask::cancel()
	{

	}

	void DecryptTask::doStart()
	{
	kleo_assert(d->m_backend);

	try {
	QGpgME::DecryptJob *const job = d->m_backend->decryptJob();
	kleo_assert(job);
	d->registerJob(job);
	ensureIOOpen(d->m_input->ioDevice().get(), d->m_output->ioDevice().get());
	job->start(d->m_input->ioDevice(), d->m_output->ioDevice());
	} catch (const GpgME::Exception &e) {
	emitResult(fromDecryptResult(e.error(), QString::fromLocal8Bit(e.what()), AuditLogEntry()));
	} catch (const std::exception &e) {
	emitResult(fromDecryptResult(Error::fromCode(GPG_ERR_INTERNAL), i18n("Caught exception: %1", QString::fromLocal8Bit(e.what())), AuditLogEntry()));
	} catch (...) {
	emitResult(fromDecryptResult(Error::fromCode(GPG_ERR_INTERNAL), i18n("Caught unknown exception"), AuditLogEntry()));
	}
	}

	class VerifyOpaqueTask::Private
	{
	VerifyOpaqueTask *const q;
	public:
	explicit Private(VerifyOpaqueTask *qq)
	: q{qq}
	{
	}

	void startVerifyOpaqueJob();
	#if QGPGME_SUPPORTS_ARCHIVE_JOBS
	void startDecryptVerifyArchiveJob();
	#endif

	void slotResult(const VerificationResult &, const QByteArray & = {});

	std::shared_ptr<Input> m_input;
	std::shared_ptr<Output> m_output;
	const QGpgME::Protocol *m_backend = nullptr;
	Protocol m_protocol = UnknownProtocol;
	bool m_extractArchive = false;
	QString m_outputDirectory;
	};

	void VerifyOpaqueTask::Private::slotResult(const VerificationResult &result, const QByteArray &plainText)
	{
	updateKeys(result);
	{
	std::stringstream ss;
	ss << result;
	qCDebug(KLEOPATRA_LOG) << ss.str().c_str();
	}
	const AuditLogEntry auditLog = auditLogFromSender(q->sender());
	if (m_output) {
	if (result.error().code()) {
	m_output->cancel();
	} else {
	try {
	kleo_assert(!result.isNull());
	m_output->finalize();
	} catch (const GpgME::Exception &e) {
	q->emitResult(q->fromVerifyOpaqueResult(e.error(), QString::fromLocal8Bit(e.what()), auditLog));
	return;
	} catch (const std::exception &e) {
	q->emitResult(q->fromVerifyOpaqueResult(Error::fromCode(GPG_ERR_INTERNAL), i18n("Caught exception: %1", QString::fromLocal8Bit(e.what())), auditLog));
	return;
	} catch (...) {
	q->emitResult(q->fromVerifyOpaqueResult(Error::fromCode(GPG_ERR_INTERNAL), i18n("Caught unknown exception"), auditLog));
	return;
	}
	}
	}

	const int drErr = result.error().code();
	const QString errorString = m_output ? m_output->errorString() : QString{};
	if (((drErr == GPG_ERR_EIO \|\| drErr == GPG_ERR_NO_DATA) && !errorString.isEmpty()) \|\|
	(m_output && m_output->failed())) {
	q->emitResult(q->fromVerifyOpaqueResult(result.error() ? result.error() : Error::fromCode(GPG_ERR_EIO),
	errorString, auditLog));
	return;
	}

	q->emitResult(q->fromVerifyOpaqueResult(result, plainText, auditLog));
	}

	VerifyOpaqueTask::VerifyOpaqueTask(QObject *parent) : AbstractDecryptVerifyTask(parent), d(new Private(this))
	{
	}

	VerifyOpaqueTask::~VerifyOpaqueTask()
	{
	}

	void VerifyOpaqueTask::setInput(const std::shared_ptr<Input> &input)
	{
	d->m_input = input;
	kleo_assert(d->m_input && d->m_input->ioDevice());
	}

	void VerifyOpaqueTask::setOutput(const std::shared_ptr<Output> &output)
	{
	d->m_output = output;
	kleo_assert(d->m_output && d->m_output->ioDevice());
	}

	void VerifyOpaqueTask::setProtocol(Protocol prot)
	{
	kleo_assert(prot != UnknownProtocol);
	d->m_protocol = prot;
	d->m_backend = (prot == GpgME::OpenPGP) ? QGpgME::openpgp() : QGpgME::smime();
	kleo_assert(d->m_backend);
	}

	void VerifyOpaqueTask::autodetectProtocolFromInput()
	{
	if (!d->m_input) {
	return;
	}
	const Protocol p = findProtocol(d->m_input->classification());
	if (p == UnknownProtocol) {
	throw Exception(gpg_error(GPG_ERR_NOTHING_FOUND), i18n("Could not determine whether this is an S/MIME or an OpenPGP signature - maybe it is not a signature at all?"), Exception::MessageOnly);
	}
	setProtocol(p);
	}

	QString VerifyOpaqueTask::label() const
	{
	return i18n("Verifying: %1...", d->m_input->label());
	}

	unsigned long long VerifyOpaqueTask::inputSize() const
	{
	return d->m_input ? d->m_input->size() : 0;
	}

	QString VerifyOpaqueTask::inputLabel() const
	{
	return d->m_input ? d->m_input->label() : QString();
	}

	QString VerifyOpaqueTask::outputLabel() const
	{
	return d->m_output ? d->m_output->label() : d->m_outputDirectory;
	}

	Protocol VerifyOpaqueTask::protocol() const
	{
	return d->m_protocol;
	}

	void VerifyOpaqueTask::setExtractArchive(bool extract)
	{
	d->m_extractArchive = extract;
	}

	void VerifyOpaqueTask::setOutputDirectory(const QString &directory)
	{
	d->m_outputDirectory = directory;
	}

	void VerifyOpaqueTask::cancel()
	{

	}

	void VerifyOpaqueTask::doStart()
	{
	kleo_assert(d->m_backend);
	#if QGPGME_SUPPORTS_ARCHIVE_JOBS
	if (d->m_extractArchive && archiveJobsCanBeUsed(d->m_protocol)) {
	d->startDecryptVerifyArchiveJob();
	} else
	#endif
	{
	d->startVerifyOpaqueJob();
	}
	}

	void VerifyOpaqueTask::Private::startVerifyOpaqueJob()
	{
	try {
	QGpgME::VerifyOpaqueJob *const job = m_backend->verifyOpaqueJob();
	kleo_assert(job);
	connect(job, &QGpgME::VerifyOpaqueJob::result, q, [this](const GpgME::VerificationResult &result, const QByteArray &plainText) {
	slotResult(result, plainText);
	});
	#if QGPGME_JOB_HAS_NEW_PROGRESS_SIGNALS
	connect(job, &QGpgME::Job::jobProgress, q, &VerifyOpaqueTask::setProgress);
	#else
	connect(job, &QGpgME::Job::progress, q, [this](const QString &, int processed, int total) {
	q->setProgress(processed, total);
	});
	#endif
	ensureIOOpen(m_input->ioDevice().get(), m_output ? m_output->ioDevice().get() : nullptr);
	job->start(m_input->ioDevice(), m_output ? m_output->ioDevice() : std::shared_ptr<QIODevice>());
	} catch (const GpgME::Exception &e) {
	q->emitResult(q->fromVerifyOpaqueResult(e.error(), QString::fromLocal8Bit(e.what()), AuditLogEntry()));
	} catch (const std::exception &e) {
	q->emitResult(q->fromVerifyOpaqueResult(Error::fromCode(GPG_ERR_INTERNAL), i18n("Caught exception: %1", QString::fromLocal8Bit(e.what())), AuditLogEntry()));
	} catch (...) {
	q->emitResult(q->fromVerifyOpaqueResult(Error::fromCode(GPG_ERR_INTERNAL), i18n("Caught unknown exception"), AuditLogEntry()));
	}
	}

	#if QGPGME_SUPPORTS_ARCHIVE_JOBS
	void VerifyOpaqueTask::Private::startDecryptVerifyArchiveJob()
	{
	auto *const job = m_backend->decryptVerifyArchiveJob();
	kleo_assert(job);
	job->setOutputDirectory(m_outputDirectory);
	connect(job, &QGpgME::DecryptVerifyArchiveJob::result, q, [this](const DecryptionResult &, const VerificationResult &verifyResult) {
	slotResult(verifyResult);
	});
	connect(job, &QGpgME::DecryptVerifyArchiveJob::dataProgress, q, &VerifyOpaqueTask::setProgress);
	ensureIOOpen(m_input->ioDevice().get(), nullptr);
	const auto err = job->start(m_input->ioDevice());
	if (err) {
	q->emitResult(q->fromVerifyOpaqueResult(err, {}, {}));
	}
	}
	#endif

	class VerifyDetachedTask::Private
	{
	VerifyDetachedTask *const q;
	public:
	explicit Private(VerifyDetachedTask *qq)
	: q{qq}
	{
	}

	void slotResult(const VerificationResult &);

	void registerJob(QGpgME::VerifyDetachedJob *job)
	{
	q->connect(job, SIGNAL(result(GpgME::VerificationResult)),
	q, SLOT(slotResult(GpgME::VerificationResult)));
	#if QGPGME_JOB_HAS_NEW_PROGRESS_SIGNALS
	q->connect(job, &QGpgME::Job::jobProgress, q, &VerifyDetachedTask::setProgress);
	#else
	q->connect(job, &QGpgME::Job::progress, q, [this](const QString &, int processed, int total) {
	q->setProgress(processed, total);
	});
	#endif
	}

	std::shared_ptr<Input> m_input, m_signedData;
	const QGpgME::Protocol *m_backend = nullptr;
	Protocol m_protocol = UnknownProtocol;
	};

	void VerifyDetachedTask::Private::slotResult(const VerificationResult &result)
	{
	updateKeys(result);
	{
	std::stringstream ss;
	ss << result;
	qCDebug(KLEOPATRA_LOG) << ss.str().c_str();
	}
	const AuditLogEntry auditLog = auditLogFromSender(q->sender());
	try {
	kleo_assert(!result.isNull());
	q->emitResult(q->fromVerifyDetachedResult(result, auditLog));
	} catch (const GpgME::Exception &e) {
	q->emitResult(q->fromVerifyDetachedResult(e.error(), QString::fromLocal8Bit(e.what()), auditLog));
	} catch (const std::exception &e) {
	q->emitResult(q->fromVerifyDetachedResult(Error::fromCode(GPG_ERR_INTERNAL), i18n("Caught exception: %1", QString::fromLocal8Bit(e.what())), auditLog));
	} catch (...) {
	q->emitResult(q->fromVerifyDetachedResult(Error::fromCode(GPG_ERR_INTERNAL), i18n("Caught unknown exception"), auditLog));
	}
	}

	VerifyDetachedTask::VerifyDetachedTask(QObject *parent) : AbstractDecryptVerifyTask(parent), d(new Private(this))
	{
	}

	VerifyDetachedTask::~VerifyDetachedTask()
	{
	}

	void VerifyDetachedTask::setInput(const std::shared_ptr<Input> &input)
	{
	d->m_input = input;
	kleo_assert(d->m_input && d->m_input->ioDevice());
	}

	void VerifyDetachedTask::setSignedData(const std::shared_ptr<Input> &signedData)
	{
	d->m_signedData = signedData;
	kleo_assert(d->m_signedData && d->m_signedData->ioDevice());
	}

	void VerifyDetachedTask::setProtocol(Protocol prot)
	{
	kleo_assert(prot != UnknownProtocol);
	d->m_protocol = prot;
	d->m_backend = (prot == GpgME::OpenPGP) ? QGpgME::openpgp() : QGpgME::smime();
	kleo_assert(d->m_backend);
	}

	void VerifyDetachedTask::autodetectProtocolFromInput()
	{
	if (!d->m_input) {
	return;
	}
	const Protocol p = findProtocol(d->m_input->classification());
	if (p == UnknownProtocol) {
	throw Exception(gpg_error(GPG_ERR_NOTHING_FOUND), i18n("Could not determine whether this is an S/MIME or an OpenPGP signature - maybe it is not a signature at all?"), Exception::MessageOnly);
	}
	setProtocol(p);
	}

	unsigned long long VerifyDetachedTask::inputSize() const
	{
	return d->m_signedData ? d->m_signedData->size() : 0;
	}

	QString VerifyDetachedTask::label() const
	{
	if (d->m_signedData) {
	return xi18nc("Verification of a detached signature in progress. The first file contains the data."
	"The second file is the signature file.",
	"Verifying: <filename>%1</filename> with <filename>%2</filename>...",
	d->m_signedData->label(),
	d->m_input->label());

	}
	return i18n("Verifying signature: %1...", d->m_input->label());
	}

	QString VerifyDetachedTask::inputLabel() const
	{
	if (d->m_signedData && d->m_input) {
	return xi18nc("Verification of a detached signature summary. The first file contains the data."
	"The second file is signature.",
	"Verified <filename>%1</filename> with <filename>%2</filename>",
	d->m_signedData->label(),
	d->m_input->label());

	}
	return d->m_input ? d->m_input->label() : QString();
	}

	QString VerifyDetachedTask::outputLabel() const
	{
	return QString();
	}

	Protocol VerifyDetachedTask::protocol() const
	{
	return d->m_protocol;
	}

	void VerifyDetachedTask::cancel()
	{

	}

	void VerifyDetachedTask::doStart()
	{
	kleo_assert(d->m_backend);
	try {
	QGpgME::VerifyDetachedJob *const job = d->m_backend->verifyDetachedJob();
	kleo_assert(job);
	d->registerJob(job);
	ensureIOOpen(d->m_input->ioDevice().get(), nullptr);
	ensureIOOpen(d->m_signedData->ioDevice().get(), nullptr);
	job->start(d->m_input->ioDevice(), d->m_signedData->ioDevice());
	} catch (const GpgME::Exception &e) {
	emitResult(fromVerifyDetachedResult(e.error(), QString::fromLocal8Bit(e.what()), AuditLogEntry()));
	} catch (const std::exception &e) {
	emitResult(fromVerifyDetachedResult(Error::fromCode(GPG_ERR_INTERNAL), i18n("Caught exception: %1", QString::fromLocal8Bit(e.what())), AuditLogEntry()));
	} catch (...) {
	emitResult(fromVerifyDetachedResult(Error::fromCode(GPG_ERR_INTERNAL), i18n("Caught unknown exception"), AuditLogEntry()));
	}
	}

	#include "moc_decryptverifytask.cpp"

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