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kgpg: implement decryption

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Signed-off-by: Ivailo Monev <xakepa10@gmail.com>
This commit is contained in:
Ivailo Monev 2022-03-14 17:19:33 +02:00
parent 61b63feb67
commit 1dbd8112bb
3 changed files with 164 additions and 37 deletions
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156
kgpg/kgpg.cpp
View file

@ -32,6 +32,8 @@ KGPG::KGPG(QWidget *parent)
m_release(false)
{
m_ui.setupUi(this);
m_ui.startbutton->setEnabled(false);
m_ui.progressbar->setVisible(false);
// required by context
kDebug() << gpgme_check_version(NULL);
@ -42,6 +44,8 @@ KGPG::KGPG(QWidget *parent)
return;
}
m_release = true;
connect(m_ui.startbutton, SIGNAL(clicked()), this, SLOT(slotStart()));
}
KGPG::~KGPG()
@ -58,18 +62,26 @@ void KGPG::setMode(const KGPGMode mode)
switch (mode) {
case KGPG::EncryptMode: {
updateKeys(GPGME_KEYLIST_MODE_LOCAL, true);
m_ui.startbutton->setEnabled(!m_keys.isEmpty());
m_ui.destinationrequester->setVisible(true);
break;
}
case KGPG::DecryptMode: {
updateKeys(GPGME_KEYLIST_MODE_LOCAL, false);
m_ui.startbutton->setEnabled(!m_keys.isEmpty());
m_ui.destinationrequester->setVisible(true);
break;
}
case KGPG::SignMode: {
updateKeys(GPGME_KEYLIST_MODE_LOCAL | GPGME_KEYLIST_MODE_SIGS, true);
m_ui.startbutton->setEnabled(!m_keys.isEmpty());
m_ui.destinationrequester->setVisible(true);
break;
}
case KGPG::VerifyMode: {
updateKeys(GPGME_KEYLIST_MODE_LOCAL, false);
m_ui.startbutton->setEnabled(true);
m_ui.destinationrequester->setVisible(false);
break;
}
default: {
@ -82,8 +94,45 @@ void KGPG::setMode(const KGPGMode mode)
void KGPG::setSource(const QString &source)
{
const KUrl sourceurl(source);
m_ui.sourcerequester->setUrl(sourceurl);
m_ui.destinationrequester->setUrl(sourceurl.directory());
// TODO: invalid source or destination URL should disable start button
switch (m_mode) {
case KGPG::EncryptMode: {
QString destinationstring = sourceurl.prettyUrl();
destinationstring.append(QLatin1String(".gpg"));
m_ui.sourcerequester->setUrl(sourceurl);
m_ui.destinationrequester->setUrl(KUrl(destinationstring));
break;
}
case KGPG::DecryptMode: {
QString destinationstring = sourceurl.prettyUrl();
if (destinationstring.endsWith(QLatin1String(".gpg"))) {
destinationstring.chop(4);
}
m_ui.sourcerequester->setFilter(QString::fromLatin1("application/pgp-encrypted"));
m_ui.destinationrequester->setFilter(QString());
m_ui.sourcerequester->setUrl(sourceurl);
m_ui.destinationrequester->setUrl(KUrl(destinationstring));
break;
}
case KGPG::SignMode: {
QString destinationstring = sourceurl.prettyUrl();
destinationstring.append(QLatin1String(".asc"));
m_ui.sourcerequester->setFilter(QString());
m_ui.destinationrequester->setFilter(QString::fromLatin1("application/pgp-signature"));
m_ui.sourcerequester->setUrl(sourceurl);
m_ui.destinationrequester->setUrl(KUrl(destinationstring));
break;
}
case KGPG::VerifyMode: {
m_ui.sourcerequester->setFilter(QString::fromLatin1("application/pgp-signature"));
m_ui.sourcerequester->setUrl(sourceurl);
break;
}
default: {
Q_ASSERT(false);
break;
}
}
}
void KGPG::setError(const char* const error)
@ -96,19 +145,25 @@ void KGPG::setError(const QString &error)
const QString errormessage = i18n("Error: %1", error);
m_ui.statusbar->showMessage(errormessage);
m_ui.progressbar->setMinimum(0);
m_ui.progressbar->setMaximum(100);
m_ui.progressbar->setVisible(false);
m_ui.startbutton->setVisible(true);
}
void KGPG::start()
{
m_ui.progressbar->setMinimum(0);
m_ui.progressbar->setMaximum(0);
m_ui.progressbar->setVisible(true);
m_ui.startbutton->setVisible(false);
switch (m_mode) {
case KGPG::EncryptMode: {
if (m_keys.isEmpty()) {
setError("No key available");
return;
break;
}
const QByteArray kgpgkeyfpr = m_keys.at(m_ui.keysbox->currentIndex()).fpr;
@ -118,7 +173,7 @@ void KGPG::start()
gpgme_error_t gpgresult = gpgme_data_new_from_file(&gpgindata, gpginputfile.constData(), 1);
if (gpgresult != 0) {
setError(gpgme_strerror(gpgresult));
return;
break;
}
gpgme_key_t gpgencryptkey;
@ -126,7 +181,7 @@ void KGPG::start()
if (gpgresult != 0) {
setError(gpgme_strerror(gpgresult));
gpgme_data_release(gpgindata);
return;
break;
}
gpgme_data_t gpgoutdata;
@ -134,7 +189,7 @@ void KGPG::start()
if (gpgresult != 0) {
setError(gpgme_strerror(gpgresult));
gpgme_data_release(gpgindata);
return;
break;
}
gpgme_key_t gpgkeys[2] = { gpgencryptkey, NULL };
@ -143,25 +198,26 @@ void KGPG::start()
setError(gpgme_strerror(gpgresult));
gpgme_data_release(gpgindata);
gpgme_data_release(gpgoutdata);
return;
break;
}
size_t gpgbuffersize = 0;
char* gpgbuffer = gpgme_data_release_and_get_mem(gpgoutdata, &gpgbuffersize);
const QString outputfile = m_ui.destinationrequester->url().toLocalFile()
+ QDir::separator() + m_ui.sourcerequester->url().fileName() + QLatin1String(".gpg");
const QString outputfile = m_ui.destinationrequester->url().toLocalFile();
QFile encryptedfile(outputfile);
if (!encryptedfile.open(QFile::WriteOnly)) {
setError(encryptedfile.errorString());
gpgme_free(gpgbuffer);
gpgme_data_release(gpgindata);
break;
}
if (encryptedfile.write(gpgbuffer, gpgbuffersize) != gpgbuffersize) {
setError(encryptedfile.errorString());
gpgme_free(gpgbuffer);
gpgme_data_release(gpgindata);
break;
}
// qDebug() << Q_FUNC_INFO << "encrypted" << gpgbuffer;
@ -170,42 +226,65 @@ void KGPG::start()
break;
}
case KGPG::DecryptMode: {
#ifdef kgpg_decrypt
gpgme_data_t gpgdecryptoutdata;
gpgme_data_new(&gpgdecryptoutdata);
if (gpgresult != 0) {
setError(gpgme_strerror(gpgresult));
gpgme_data_release(gpgindata);
gpgme_data_release(gpgoutdata);
return;
if (m_keys.isEmpty()) {
setError("No key available");
break;
}
gpgme_data_seek(gpgoutdata, 0, SEEK_SET);
gpgresult = gpgme_op_decrypt(m_gpgctx, gpgoutdata, gpgdecryptoutdata);
const QByteArray gpginputfile = m_ui.sourcerequester->url().toLocalFile().toLocal8Bit();
gpgme_data_t gpgindata;
gpgme_error_t gpgresult = gpgme_data_new_from_file(&gpgindata, gpginputfile.constData(), 1);
if (gpgresult != 0) {
setError(gpgme_strerror(gpgresult));
break;
}
gpgme_data_t gpgoutdata;
gpgresult = gpgme_data_new(&gpgoutdata);
if (gpgresult != 0) {
setError(gpgme_strerror(gpgresult));
gpgme_data_release(gpgindata);
gpgme_data_release(gpgoutdata);
gpgme_data_release(gpgdecryptoutdata);
return;
break;
}
gpgresult = gpgme_op_decrypt(m_gpgctx, gpgindata, gpgoutdata);
if (gpgresult != 0) {
setError(gpgme_strerror(gpgresult));
gpgme_data_release(gpgindata);
gpgme_data_release(gpgoutdata);
break;
}
size_t gpgbuffersize = 0;
char* gpgbuffer = gpgme_data_release_and_get_mem(gpgdecryptoutdata, &gpgbuffersize);
kWarning() << "decryption" << gpgbuffer;
char* gpgbuffer = gpgme_data_release_and_get_mem(gpgoutdata, &gpgbuffersize);
const QString outputfile = m_ui.destinationrequester->url().toLocalFile();
QFile encryptedfile(outputfile);
if (!encryptedfile.open(QFile::WriteOnly)) {
setError(encryptedfile.errorString());
gpgme_free(gpgbuffer);
gpgme_data_release(gpgindata);
break;
}
if (encryptedfile.write(gpgbuffer, gpgbuffersize) != gpgbuffersize) {
setError(encryptedfile.errorString());
gpgme_free(gpgbuffer);
gpgme_data_release(gpgindata);
break;
}
// qDebug() << Q_FUNC_INFO << "decryption" << gpgbuffer;
gpgme_free(gpgbuffer);
gpgme_data_release(gpgindata);
gpgme_data_release(gpgoutdata);
#endif // kgpg_decrypt
setError("Not implemented");
break;
}
case KGPG::SignMode: {
if (m_keys.isEmpty()) {
setError("No key available");
return;
break;
}
setError("Not implemented");
@ -220,6 +299,17 @@ void KGPG::start()
break;
}
}
m_ui.progressbar->setMinimum(1);
m_ui.progressbar->setMaximum(100);
m_ui.progressbar->setVisible(false);
m_ui.startbutton->setVisible(true);
m_ui.statusbar->showMessage("Done");
}
void KGPG::slotStart()
{
start();
}
void KGPG::updateKeys(const gpgme_keylist_mode_t gpgmode, const bool secret)
@ -290,21 +380,17 @@ int main(int argc, char **argv)
KGPG* kgpg = new KGPG();
KCmdLineArgs *args = KCmdLineArgs::parsedArgs();
if (args->isSet("encrypt")) {
kgpg->setSource(args->getOption("encrypt"));
kgpg->setMode(KGPG::EncryptMode);
// kgpg->start();
kgpg->setSource(args->getOption("encrypt"));
} else if (args->isSet("decrypt")) {
kgpg->setSource(args->getOption("decrypt"));
kgpg->setMode(KGPG::DecryptMode);
kgpg->start();
kgpg->setSource(args->getOption("decrypt"));
} else if (args->isSet("sign")) {
kgpg->setSource(args->getOption("sign"));
kgpg->setMode(KGPG::SignMode);
// kgpg->start();
} else if (args->isSet("verify")) {
kgpg->setSource(args->getOption("verify"));
kgpg->setMode(KGPG::VerifyMode);
kgpg->start();
kgpg->setSource(args->getOption("verify"));
} else {
kgpg->setMode(KGPG::EncryptMode);
}

3
kgpg/kgpg.h
View file

@ -61,6 +61,9 @@ public:
void start();
private Q_SLOTS:
void slotStart();
private:
void updateKeys(const gpgme_keylist_mode_t gpgmode, const bool secret);

42
kgpg/kgpgwidget.ui
View file

@ -7,7 +7,7 @@
<x>0</x>
<y>0</y>
<width>410</width>
<height>350</height>
<height>379</height>
</rect>
</property>
<property name="windowTitle">
@ -226,10 +226,48 @@
<item row="1" column="1" colspan="2">
<widget class="KUrlRequester" name="destinationrequester">
<property name="mode">
<set>KFile::Directory|KFile::ExistingOnly|KFile::LocalOnly</set>
<set>KFile::ExistingOnly|KFile::File|KFile::LocalOnly</set>
</property>
</widget>
</item>
<item row="5" column="1">
<widget class="KPushButton" name="startbutton">
<property name="text">
<string>Start</string>
</property>
<property name="icon">
<iconset theme="application-x-executable">
<normaloff/>
</iconset>
</property>
</widget>
</item>
<item row="5" column="0">
<spacer name="horizontalSpacer">
<property name="orientation">
<enum>Qt::Horizontal</enum>
</property>
<property name="sizeHint" stdset="0">
<size>
<width>40</width>
<height>20</height>
</size>
</property>
</spacer>
</item>
<item row="5" column="2">
<spacer name="horizontalSpacer_2">
<property name="orientation">
<enum>Qt::Horizontal</enum>
</property>
<property name="sizeHint" stdset="0">
<size>
<width>40</width>
<height>20</height>
</size>
</property>
</spacer>
</item>
</layout>
</widget>
<widget class="QMenuBar" name="menubar">