qt: Support writing signed/encrypted archives directly to a file

* lang/qt/src/encryptarchivejob.cpp, lang/qt/src/encryptarchivejob.h
(EncryptArchiveJob): Add member functions setRecipients, recipients,
setInputPaths, inputPaths, setOutputFile, outputFile,
setEncryptionFlags, encryptionFlags.
* lang/qt/src/encryptarchivejob_p.h (EncryptArchiveJobPrivate): Add
members m_recipients, m_inputPaths, m_outputFilePath, m_encryptionFlags.
* lang/qt/src/qgpgmeencryptarchivejob.cpp (encrypt): Move creation of
outdata to encrypt_to_io_device.
(encrypt_to_io_device, encrypt_to_filename): New.
(QGpgMEEncryptArchiveJob::start): Use encrypt_to_io_device instead of
encrypt.
(QGpgMEEncryptArchiveJobPrivate::startIt): Start the job with the
values from member variables.
* lang/qt/src/qgpgmesignarchivejob.cpp (sign): Move creation of
outdata to sign_to_io_device.
(sign_to_io_device, sign_to_filename): New.
(QGpgMESignArchiveJob::start): Use sign_to_io_device instead of sign.
(QGpgMESignArchiveJobPrivate::startIt): Start the job with the
values from member variables.
* lang/qt/src/qgpgmesignencryptarchivejob.cpp (sign_encrypt): Move
creation of outdata to sign_encrypt_to_io_device.
(sign_encrypt_to_io_device, sign_encrypt_to_filename): New.
(QGpgMESignEncryptArchiveJob::start): Use sign_encrypt_to_io_device
instead of sign_encrypt.
(QGpgMESignEncryptArchiveJobPrivate::startIt): Start the job with the
values from member variables.
* lang/qt/src/signarchivejob.cpp, lang/qt/src/signarchivejob.h
(SignArchiveJob): Add member functions setSigner, signers,
setInputPaths, inputPaths, setOutputFile, outputFile.
* lang/qt/src/signarchivejob_p.h (SignArchiveJobPrivate): Add
members m_signers, m_inputPaths, m_outputFilePath.
* lang/qt/src/signencryptarchivejob.cpp,
lang/qt/src/signencryptarchivejob.h (SignEncryptArchiveJob): Add
member functions setSigner, signers, setRecipients, recipients,
setInputPaths, inputPaths, setOutputFile, outputFile,
setEncryptionFlags, encryptionFlags.
* lang/qt/src/signencryptarchivejob_p.h (SignEncryptArchiveJobPrivate):
Add members m_signers, m_recipients, m_inputPaths, m_outputFilePath,
m_encryptionFlags.

* lang/qt/tests/run-encryptarchivejob.cpp (createOutput): Remove.
(checkOutputFilePath): New.
(main): Create file output writing to stdout if no archive name (or "-")
is given. Exit if file with given archive name already exists. Make
the jobs write the created archive directly to the given archive name.
* lang/qt/tests/run-signarchivejob.cpp (createOutput): Remove.
(checkOutputFilePath): New.
(main): Create file output writing to stdout if no archive name (or "-")
is given. Exit if file with given archive name already exists. Make
the jobs write the created archive directly to the given archive name.
--

This makes it possible to tell gpgtar to write the created archive
directly to a specified file bypassing GpgME's Data IO.

GnuPG-bug-id: 6530

15 files changed, 535 insertions, 94 deletions

diff --git a/NEWS b/NEWS
index f61b354b..ce72d610 100644
--- a/NEWS
+++ b/NEWS
@@ -1,18 +1,49 @@
 Noteworthy changes in version 1.21.0 (unreleased)
 -------------------------------------------------
 
- * Qt Jobs working with QIODeviceDataProvider now properly
- handle input-size hints and progress for files larger.
- 2^32 bytes in 32 bit builds.  [T6534]
+ * Extended gpgme_op_encrypt*, gpgme_op_encrypt_sign*, and
+   gpgme_op_sign* to allow writing the output directly to a
+   file.  [T6530]
+
+ * qt: Allow writing the created archives directly to a
+   file.  [T6530]
 
- * Error::isCanceled now also returns true for error code
+ * qt: Qt Jobs working with QIODeviceDataProvider now properly
+   handle input-size hints and progress for files larger.
+   2^32 bytes in 32 bit builds.  [T6534]
+
+ * cpp: Error::isCanceled now also returns true for error code
    GPG_ERR_FULLY_CANCELED.  [T6510]
 
-* Interface changes relative to the 1.20.0 release:
-~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+ * Interface changes relative to the 1.20.0 release:
+ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
  cpp: Data::setFlag                         NEW.
  cpp: Data::setSizeHint                     NEW.
  qt: Job::startIt                           NEW.
+ qt: EncryptArchiveJob::setRecipients       NEW.
+ qt: EncryptArchiveJob::recipients          NEW.
+ qt: EncryptArchiveJob::setInputPaths       NEW.
+ qt: EncryptArchiveJob::inputPaths          NEW.
+ qt: EncryptArchiveJob::setOutputFile       NEW.
+ qt: EncryptArchiveJob::outputFile          NEW.
+ qt: EncryptArchiveJob::setEncryptionFlags  NEW.
+ qt: EncryptArchiveJob::encryptionFlags     NEW.
+ qt: SignArchiveJob::setSigners             NEW.
+ qt: SignArchiveJob::signers                NEW.
+ qt: SignArchiveJob::setInputPaths          NEW.
+ qt: SignArchiveJob::inputPaths             NEW.
+ qt: SignArchiveJob::setOutputFile          NEW.
+ qt: SignArchiveJob::outputFile             NEW.
+ qt: SignEncryptArchiveJob::setSigners      NEW.
+ qt: SignEncryptArchiveJob::signers         NEW.
+ qt: SignEncryptArchiveJob::setRecipients   NEW.
+ qt: SignEncryptArchiveJob::recipients      NEW.
+ qt: SignEncryptArchiveJob::setInputPaths   NEW.
+ qt: SignEncryptArchiveJob::inputPaths      NEW.
+ qt: SignEncryptArchiveJob::setOutputFile   NEW.
+ qt: SignEncryptArchiveJob::outputFile      NEW.
+ qt: SignEncryptArchiveJob::setEncryptionFlags NEW.
+ qt: SignEncryptArchiveJob::encryptionFlags NEW.
 
 Noteworthy changes in version 1.20.0 (2023-04-20)
 -------------------------------------------------
diff --git a/lang/qt/src/encryptarchivejob.cpp b/lang/qt/src/encryptarchivejob.cpp
index a99de13f..aa51bcf3 100644
--- a/lang/qt/src/encryptarchivejob.cpp
+++ b/lang/qt/src/encryptarchivejob.cpp
@@ -56,6 +56,54 @@ bool EncryptArchiveJob::isSupported()
     return (gpgVersion >= "2.4.1") || (gpgVersion >= "2.2.42" && gpgVersion < "2.3.0");
 }
 
+void EncryptArchiveJob::setRecipients(const std::vector<GpgME::Key> &recipients)
+{
+    auto d = jobPrivate<EncryptArchiveJobPrivate>(this);
+    d->m_recipients = recipients;
+}
+
+std::vector<GpgME::Key> EncryptArchiveJob::recipients() const
+{
+    auto d = jobPrivate<EncryptArchiveJobPrivate>(this);
+    return d->m_recipients;
+}
+
+void EncryptArchiveJob::setInputPaths(const std::vector<QString> &paths)
+{
+    auto d = jobPrivate<EncryptArchiveJobPrivate>(this);
+    d->m_inputPaths = paths;
+}
+
+std::vector<QString> EncryptArchiveJob::inputPaths() const
+{
+    auto d = jobPrivate<EncryptArchiveJobPrivate>(this);
+    return d->m_inputPaths;
+}
+
+void EncryptArchiveJob::setOutputFile(const QString &path)
+{
+    auto d = jobPrivate<EncryptArchiveJobPrivate>(this);
+    d->m_outputFilePath = path;
+}
+
+QString EncryptArchiveJob::outputFile() const
+{
+    auto d = jobPrivate<EncryptArchiveJobPrivate>(this);
+    return d->m_outputFilePath;
+}
+
+void EncryptArchiveJob::setEncryptionFlags(GpgME::Context::EncryptionFlags flags)
+{
+    auto d = jobPrivate<EncryptArchiveJobPrivate>(this);
+    d->m_encryptionFlags = static_cast<GpgME::Context::EncryptionFlags>(flags | GpgME::Context::EncryptArchive);
+}
+
+GpgME::Context::EncryptionFlags EncryptArchiveJob::encryptionFlags() const
+{
+    auto d = jobPrivate<EncryptArchiveJobPrivate>(this);
+    return d->m_encryptionFlags;
+}
+
 void EncryptArchiveJob::setBaseDirectory(const QString &baseDirectory)
 {
     auto d = jobPrivate<EncryptArchiveJobPrivate>(this);
diff --git a/lang/qt/src/encryptarchivejob.h b/lang/qt/src/encryptarchivejob.h
index b3c16c3a..66d45619 100644
--- a/lang/qt/src/encryptarchivejob.h
+++ b/lang/qt/src/encryptarchivejob.h
@@ -63,6 +63,53 @@ public:
 
     static bool isSupported();
 
+    /**
+     * Sets the keys to use for encrypting the archive.
+     *
+     * Used if the job is started with startIt().
+     */
+    void setRecipients(const std::vector<GpgME::Key> &recipients);
+    std::vector<GpgME::Key> recipients() const;
+
+    /**
+     * Sets the paths of the files and folders to put into the archive.
+     *
+     * If base directory is set, then the paths must be relative to the
+     * base directory.
+     *
+     * Used if the job is started with startIt().
+     */
+    void setInputPaths(const std::vector<QString> &paths);
+    std::vector<QString> inputPaths() const;
+
+    /**
+     * Sets the path of the file to write the created archive to.
+     *
+     * If \a path is a relative path and base directory is set, then the
+     * path is interpreted relative to the base directory.
+     *
+     * Used if the job is started with startIt().
+     *
+     * \note If a file with this path exists, then the job will fail, i.e. you
+     * need to delete an existing file that shall be overwritten before you
+     * start the job.
+     */
+    void setOutputFile(const QString &path);
+    QString outputFile() const;
+
+    /**
+     * Sets the flags to use for encryption. Defaults to \c EncryptArchive.
+     * The \c EncryptArchive flag is always assumed set for this job.
+     *
+     * Used if the job is started with startIt().
+     */
+    void setEncryptionFlags(GpgME::Context::EncryptionFlags flags);
+    GpgME::Context::EncryptionFlags encryptionFlags() const;
+
+    /**
+     * Sets the base directory for the relative paths of the input files and
+     * the output file.
+     */
     void setBaseDirectory(const QString &baseDirectory);
     QString baseDirectory() const;
 
diff --git a/lang/qt/src/encryptarchivejob_p.h b/lang/qt/src/encryptarchivejob_p.h
index 798096db..f2d5eea9 100644
--- a/lang/qt/src/encryptarchivejob_p.h
+++ b/lang/qt/src/encryptarchivejob_p.h
@@ -41,7 +41,11 @@ namespace QGpgME
 
 struct EncryptArchiveJobPrivate : public JobPrivate
 {
+    std::vector<GpgME::Key> m_recipients;
+    std::vector<QString> m_inputPaths;
+    QString m_outputFilePath;
     QString m_baseDirectory;
+    GpgME::Context::EncryptionFlags m_encryptionFlags = GpgME::Context::EncryptArchive;
 };
 
 }
diff --git a/lang/qt/src/qgpgmeencryptarchivejob.cpp b/lang/qt/src/qgpgmeencryptarchivejob.cpp
index 6ae310e7..c7f84182 100644
--- a/lang/qt/src/qgpgmeencryptarchivejob.cpp
+++ b/lang/qt/src/qgpgmeencryptarchivejob.cpp
@@ -44,6 +44,8 @@
 #include "encryptarchivejob_p.h"
 #include "filelistdataprovider.h"
 
+#include <QFile>
+
 #include <data.h>
 
 using namespace QGpgME;
@@ -65,11 +67,7 @@ public:
     ~QGpgMEEncryptArchiveJobPrivate() override = default;
 
 private:
-    GpgME::Error startIt() override
-    {
-        Q_ASSERT(!"Not supported by this Job class.");
-        return Error::fromCode(GPG_ERR_NOT_SUPPORTED);
-    }
+    GpgME::Error startIt() override;
 
     void startNow() override
     {
@@ -90,25 +88,18 @@ QGpgMEEncryptArchiveJob::QGpgMEEncryptArchiveJob(Context *context)
 }
 
 static QGpgMEEncryptArchiveJob::result_type encrypt(Context *ctx,
-                                                    QThread *thread,
                                                     const std::vector<Key> &recipients,
                                                     const std::vector<QString> &paths,
-                                                    const std::weak_ptr<QIODevice> &cipherText_,
+                                                    GpgME::Data &outdata,
                                                     Context::EncryptionFlags flags,
                                                     const QString &baseDirectory)
 {
-    const std::shared_ptr<QIODevice> cipherText = cipherText_.lock();
-    const _detail::ToThreadMover ctMover(cipherText, thread);
-
     QGpgME::FileListDataProvider in{paths};
     Data indata(&in);
     if (!baseDirectory.isEmpty()) {
         indata.setFileName(baseDirectory.toStdString());
     }
 
-    QGpgME::QIODeviceDataProvider out{cipherText};
-    Data outdata(&out);
-
     flags = static_cast<Context::EncryptionFlags>(flags | Context::EncryptArchive);
     const EncryptionResult res = ctx->encrypt(recipients, indata, outdata, flags);
     Error ae;
@@ -116,6 +107,35 @@ static QGpgMEEncryptArchiveJob::result_type encrypt(Context *ctx,
     return std::make_tuple(res, log, ae);
 }
 
+static QGpgMEEncryptArchiveJob::result_type encrypt_to_io_device(Context *ctx,
+                                                                 QThread *thread,
+                                                                 const std::vector<Key> &recipients,
+                                                                 const std::vector<QString> &paths,
+                                                                 const std::weak_ptr<QIODevice> &cipherText_,
+                                                                 Context::EncryptionFlags flags,
+                                                                 const QString &baseDirectory)
+{
+    const std::shared_ptr<QIODevice> cipherText = cipherText_.lock();
+    const _detail::ToThreadMover ctMover(cipherText, thread);
+    QGpgME::QIODeviceDataProvider out{cipherText};
+    Data outdata(&out);
+
+    return encrypt(ctx, recipients, paths, outdata, flags, baseDirectory);
+}
+
+static QGpgMEEncryptArchiveJob::result_type encrypt_to_filename(Context *ctx,
+                                                                const std::vector<Key> &recipients,
+                                                                const std::vector<QString> &paths,
+                                                                const QString &outputFile,
+                                                                Context::EncryptionFlags flags,
+                                                                const QString &baseDirectory)
+{
+    Data outdata;
+    outdata.setFileName(QFile::encodeName(outputFile).constData());
+
+    return encrypt(ctx, recipients, paths, outdata, flags, baseDirectory);
+}
+
 GpgME::Error QGpgMEEncryptArchiveJob::start(const std::vector<GpgME::Key> &recipients,
                                             const std::vector<QString> &paths,
                                             const std::shared_ptr<QIODevice> &cipherText,
@@ -125,7 +145,7 @@ GpgME::Error QGpgMEEncryptArchiveJob::start(const std::vector<GpgME::Key> &recip
         return Error::fromCode(GPG_ERR_INV_VALUE);
     }
 
-    run(std::bind(&encrypt,
+    run(std::bind(&encrypt_to_io_device,
                   std::placeholders::_1,
                   std::placeholders::_2,
                   recipients,
@@ -137,4 +157,17 @@ GpgME::Error QGpgMEEncryptArchiveJob::start(const std::vector<GpgME::Key> &recip
     return {};
 }
 
+GpgME::Error QGpgMEEncryptArchiveJobPrivate::startIt()
+{
+    if (m_outputFilePath.isEmpty()) {
+        return Error::fromCode(GPG_ERR_INV_VALUE);
+    }
+
+    q->run([=](Context *ctx) {
+        return encrypt_to_filename(ctx, m_recipients, m_inputPaths, m_outputFilePath, m_encryptionFlags, m_baseDirectory);
+    });
+
+    return {};
+}
+
 #include "qgpgmeencryptarchivejob.moc"
diff --git a/lang/qt/src/qgpgmesignarchivejob.cpp b/lang/qt/src/qgpgmesignarchivejob.cpp
index c25ea89f..005b3e44 100644
--- a/lang/qt/src/qgpgmesignarchivejob.cpp
+++ b/lang/qt/src/qgpgmesignarchivejob.cpp
@@ -44,6 +44,8 @@
 #include "signarchivejob_p.h"
 #include "filelistdataprovider.h"
 
+#include <QFile>
+
 #include <data.h>
 
 using namespace QGpgME;
@@ -65,11 +67,7 @@ public:
     ~QGpgMESignArchiveJobPrivate() override = default;
 
 private:
-    GpgME::Error startIt() override
-    {
-        Q_ASSERT(!"Not supported by this Job class.");
-        return Error::fromCode(GPG_ERR_NOT_SUPPORTED);
-    }
+    GpgME::Error startIt() override;
 
     void startNow() override
     {
@@ -90,24 +88,17 @@ QGpgMESignArchiveJob::QGpgMESignArchiveJob(Context *context)
 }
 
 static QGpgMESignArchiveJob::result_type sign(Context *ctx,
-                                              QThread *thread,
                                               const std::vector<Key> &signers,
                                               const std::vector<QString> &paths,
-                                              const std::weak_ptr<QIODevice> &output_,
+                                              GpgME::Data &outdata,
                                               const QString &baseDirectory)
 {
-    const std::shared_ptr<QIODevice> output = output_.lock();
-    const _detail::ToThreadMover ctMover(output, thread);
-
     QGpgME::FileListDataProvider in{paths};
     Data indata(&in);
     if (!baseDirectory.isEmpty()) {
         indata.setFileName(baseDirectory.toStdString());
     }
 
-    QGpgME::QIODeviceDataProvider out{output};
-    Data outdata(&out);
-
     ctx->clearSigningKeys();
     for (const Key &signer : signers) {
         if (!signer.isNull()) {
@@ -123,6 +114,33 @@ static QGpgMESignArchiveJob::result_type sign(Context *ctx,
     return std::make_tuple(res, log, ae);
 }
 
+static QGpgMESignArchiveJob::result_type sign_to_io_device(Context *ctx,
+                                                           QThread *thread,
+                                                           const std::vector<Key> &signers,
+                                                           const std::vector<QString> &paths,
+                                                           const std::weak_ptr<QIODevice> &output_,
+                                                           const QString &baseDirectory)
+{
+    const std::shared_ptr<QIODevice> output = output_.lock();
+    const _detail::ToThreadMover ctMover(output, thread);
+    QGpgME::QIODeviceDataProvider out{output};
+    Data outdata(&out);
+
+    return sign(ctx, signers, paths, outdata, baseDirectory);
+}
+
+static QGpgMESignArchiveJob::result_type sign_to_filename(Context *ctx,
+                                                          const std::vector<Key> &signers,
+                                                          const std::vector<QString> &paths,
+                                                          const QString &outputFile,
+                                                          const QString &baseDirectory)
+{
+    Data outdata;
+    outdata.setFileName(QFile::encodeName(outputFile).constData());
+
+    return sign(ctx, signers, paths, outdata, baseDirectory);
+}
+
 GpgME::Error QGpgMESignArchiveJob::start(const std::vector<GpgME::Key> &signers,
                                             const std::vector<QString> &paths,
                                             const std::shared_ptr<QIODevice> &output)
@@ -131,7 +149,7 @@ GpgME::Error QGpgMESignArchiveJob::start(const std::vector<GpgME::Key> &signers,
         return Error::fromCode(GPG_ERR_INV_VALUE);
     }
 
-    run(std::bind(&sign,
+    run(std::bind(&sign_to_io_device,
                   std::placeholders::_1,
                   std::placeholders::_2,
                   signers,
@@ -142,4 +160,18 @@ GpgME::Error QGpgMESignArchiveJob::start(const std::vector<GpgME::Key> &signers,
     return {};
 }
 
+
+GpgME::Error QGpgMESignArchiveJobPrivate::startIt()
+{
+    if (m_outputFilePath.isEmpty()) {
+        return Error::fromCode(GPG_ERR_INV_VALUE);
+    }
+
+    q->run([=](Context *ctx) {
+        return sign_to_filename(ctx, m_signers, m_inputPaths, m_outputFilePath, m_baseDirectory);
+    });
+
+    return {};
+}
+
 #include "qgpgmesignarchivejob.moc"
diff --git a/lang/qt/src/qgpgmesignencryptarchivejob.cpp b/lang/qt/src/qgpgmesignencryptarchivejob.cpp
index 2c029a25..e47bfa0c 100644
--- a/lang/qt/src/qgpgmesignencryptarchivejob.cpp
+++ b/lang/qt/src/qgpgmesignencryptarchivejob.cpp
@@ -44,14 +44,9 @@
 #include "signencryptarchivejob_p.h"
 #include "filelistdataprovider.h"
 
-// #include <context.h>
+#include <QFile>
+
 #include <data.h>
-// #include <encryptionresult.h>
-//
-// #include <QBuffer>
-// #include <QFileInfo>
-//
-// #include <cassert>
 
 using namespace QGpgME;
 using namespace GpgME;
@@ -72,11 +67,7 @@ public:
     ~QGpgMESignEncryptArchiveJobPrivate() override = default;
 
 private:
-    GpgME::Error startIt() override
-    {
-        Q_ASSERT(!"Not supported by this Job class.");
-        return Error::fromCode(GPG_ERR_NOT_SUPPORTED);
-    }
+    GpgME::Error startIt() override;
 
     void startNow() override
     {
@@ -97,26 +88,19 @@ QGpgMESignEncryptArchiveJob::QGpgMESignEncryptArchiveJob(Context *context)
 }
 
 static QGpgMESignEncryptArchiveJob::result_type sign_encrypt(Context *ctx,
-                                                             QThread *thread,
                                                              const std::vector<GpgME::Key> &signers,
                                                              const std::vector<Key> &recipients,
                                                              const std::vector<QString> &paths,
-                                                             const std::weak_ptr<QIODevice> &cipherText_,
+                                                             GpgME::Data &outdata,
                                                              Context::EncryptionFlags encryptionFlags,
                                                              const QString &baseDirectory)
 {
-    const std::shared_ptr<QIODevice> cipherText = cipherText_.lock();
-    const _detail::ToThreadMover ctMover(cipherText, thread);
-
     QGpgME::FileListDataProvider in{paths};
     Data indata(&in);
     if (!baseDirectory.isEmpty()) {
         indata.setFileName(baseDirectory.toStdString());
     }
 
-    QGpgME::QIODeviceDataProvider out{cipherText};
-    Data outdata(&out);
-
     ctx->clearSigningKeys();
     for (const Key &signer : signers) {
         if (!signer.isNull()) {
@@ -133,6 +117,37 @@ static QGpgMESignEncryptArchiveJob::result_type sign_encrypt(Context *ctx,
     return std::make_tuple(res.first, res.second, log, ae);
 }
 
+static QGpgMESignEncryptArchiveJob::result_type sign_encrypt_to_io_device(Context *ctx,
+                                                                          QThread *thread,
+                                                                          const std::vector<GpgME::Key> &signers,
+                                                                          const std::vector<Key> &recipients,
+                                                                          const std::vector<QString> &paths,
+                                                                          const std::weak_ptr<QIODevice> &cipherText_,
+                                                                          Context::EncryptionFlags encryptionFlags,
+                                                                          const QString &baseDirectory)
+{
+    const std::shared_ptr<QIODevice> cipherText = cipherText_.lock();
+    const _detail::ToThreadMover ctMover(cipherText, thread);
+    QGpgME::QIODeviceDataProvider out{cipherText};
+    Data outdata(&out);
+
+    return sign_encrypt(ctx, signers, recipients, paths, outdata, encryptionFlags, baseDirectory);
+}
+
+static QGpgMESignEncryptArchiveJob::result_type sign_encrypt_to_filename(Context *ctx,
+                                                                         const std::vector<GpgME::Key> &signers,
+                                                                         const std::vector<Key> &recipients,
+                                                                         const std::vector<QString> &paths,
+                                                                         const QString &outputFile,
+                                                                         Context::EncryptionFlags encryptionFlags,
+                                                                         const QString &baseDirectory)
+{
+    Data outdata;
+    outdata.setFileName(QFile::encodeName(outputFile).constData());
+
+    return sign_encrypt(ctx, signers, recipients, paths, outdata, encryptionFlags, baseDirectory);
+}
+
 GpgME::Error QGpgMESignEncryptArchiveJob::start(const std::vector<GpgME::Key> &signers,
                                                 const std::vector<GpgME::Key> &recipients,
                                                 const std::vector<QString> &paths,
@@ -143,7 +158,7 @@ GpgME::Error QGpgMESignEncryptArchiveJob::start(const std::vector<GpgME::Key> &s
         return Error::fromCode(GPG_ERR_INV_VALUE);
     }
 
-    run(std::bind(&sign_encrypt,
+    run(std::bind(&sign_encrypt_to_io_device,
                   std::placeholders::_1,
                   std::placeholders::_2,
                   signers,
@@ -156,4 +171,17 @@ GpgME::Error QGpgMESignEncryptArchiveJob::start(const std::vector<GpgME::Key> &s
     return {};
 }
 
+GpgME::Error QGpgMESignEncryptArchiveJobPrivate::startIt()
+{
+    if (m_outputFilePath.isEmpty()) {
+        return Error::fromCode(GPG_ERR_INV_VALUE);
+    }
+
+    q->run([=](Context *ctx) {
+        return sign_encrypt_to_filename(ctx, m_signers, m_recipients, m_inputPaths, m_outputFilePath, m_encryptionFlags, m_baseDirectory);
+    });
+
+    return {};
+}
+
 #include "qgpgmesignencryptarchivejob.moc"
diff --git a/lang/qt/src/signarchivejob.cpp b/lang/qt/src/signarchivejob.cpp
index d185ae9f..411dbc57 100644
--- a/lang/qt/src/signarchivejob.cpp
+++ b/lang/qt/src/signarchivejob.cpp
@@ -56,6 +56,42 @@ bool SignArchiveJob::isSupported()
     return (gpgVersion >= "2.4.1") || (gpgVersion >= "2.2.42" && gpgVersion < "2.3.0");
 }
 
+void SignArchiveJob::setSigners(const std::vector<GpgME::Key> &signers)
+{
+    auto d = jobPrivate<SignArchiveJobPrivate>(this);
+    d->m_signers = signers;
+}
+
+std::vector<GpgME::Key> SignArchiveJob::signers() const
+{
+    auto d = jobPrivate<SignArchiveJobPrivate>(this);
+    return d->m_signers;
+}
+
+void SignArchiveJob::setInputPaths(const std::vector<QString> &paths)
+{
+    auto d = jobPrivate<SignArchiveJobPrivate>(this);
+    d->m_inputPaths = paths;
+}
+
+std::vector<QString> SignArchiveJob::inputPaths() const
+{
+    auto d = jobPrivate<SignArchiveJobPrivate>(this);
+    return d->m_inputPaths;
+}
+
+void SignArchiveJob::setOutputFile(const QString &path)
+{
+    auto d = jobPrivate<SignArchiveJobPrivate>(this);
+    d->m_outputFilePath = path;
+}
+
+QString SignArchiveJob::outputFile() const
+{
+    auto d = jobPrivate<SignArchiveJobPrivate>(this);
+    return d->m_outputFilePath;
+}
+
 void SignArchiveJob::setBaseDirectory(const QString &baseDirectory)
 {
     auto d = jobPrivate<SignArchiveJobPrivate>(this);
diff --git a/lang/qt/src/signarchivejob.h b/lang/qt/src/signarchivejob.h
index ef2b6754..7d1f6513 100644
--- a/lang/qt/src/signarchivejob.h
+++ b/lang/qt/src/signarchivejob.h
@@ -63,6 +63,44 @@ public:
 
     static bool isSupported();
 
+    /**
+     * Sets the keys to use for signing the archive.
+     *
+     * Used if the job is started with startIt().
+     */
+    void setSigners(const std::vector<GpgME::Key> &signers);
+    std::vector<GpgME::Key> signers() const;
+
+    /**
+     * Sets the paths of the files and folders to put into the archive.
+     *
+     * If base directory is set, then the paths must be relative to the
+     * base directory.
+     *
+     * Used if the job is started with startIt().
+     */
+    void setInputPaths(const std::vector<QString> &paths);
+    std::vector<QString> inputPaths() const;
+
+    /**
+     * Sets the path of the file to write the created archive to.
+     *
+     * If \a path is a relative path and base directory is set, then the
+     * path is interpreted relative to the base directory.
+     *
+     * Used if the job is started with startIt().
+     *
+     * \note If a file with this path exists, then the job will fail, i.e. you
+     * need to delete an existing file that shall be overwritten before you
+     * start the job.
+     */
+    void setOutputFile(const QString &path);
+    QString outputFile() const;
+
+    /**
+     * Sets the base directory for the relative paths of the input files and
+     * the output file.
+     */
     void setBaseDirectory(const QString &baseDirectory);
     QString baseDirectory() const;
 
diff --git a/lang/qt/src/signarchivejob_p.h b/lang/qt/src/signarchivejob_p.h
index 9176e7b4..9ec921bb 100644
--- a/lang/qt/src/signarchivejob_p.h
+++ b/lang/qt/src/signarchivejob_p.h
@@ -41,6 +41,9 @@ namespace QGpgME
 
 struct SignArchiveJobPrivate : public JobPrivate
 {
+    std::vector<GpgME::Key> m_signers;
+    std::vector<QString> m_inputPaths;
+    QString m_outputFilePath;
     QString m_baseDirectory;
 };
 
diff --git a/lang/qt/src/signencryptarchivejob.cpp b/lang/qt/src/signencryptarchivejob.cpp
index b1d5e170..429b6bf1 100644
--- a/lang/qt/src/signencryptarchivejob.cpp
+++ b/lang/qt/src/signencryptarchivejob.cpp
@@ -56,6 +56,66 @@ bool SignEncryptArchiveJob::isSupported()
     return (gpgVersion >= "2.4.1") || (gpgVersion >= "2.2.42" && gpgVersion < "2.3.0");
 }
 
+void SignEncryptArchiveJob::setSigners(const std::vector<GpgME::Key> &signers)
+{
+    auto d = jobPrivate<SignEncryptArchiveJobPrivate>(this);
+    d->m_signers = signers;
+}
+
+std::vector<GpgME::Key> SignEncryptArchiveJob::signers() const
+{
+    auto d = jobPrivate<SignEncryptArchiveJobPrivate>(this);
+    return d->m_signers;
+}
+
+void SignEncryptArchiveJob::setRecipients(const std::vector<GpgME::Key> &recipients)
+{
+    auto d = jobPrivate<SignEncryptArchiveJobPrivate>(this);
+    d->m_recipients = recipients;
+}
+
+std::vector<GpgME::Key> SignEncryptArchiveJob::recipients() const
+{
+    auto d = jobPrivate<SignEncryptArchiveJobPrivate>(this);
+    return d->m_recipients;
+}
+
+void SignEncryptArchiveJob::setInputPaths(const std::vector<QString> &paths)
+{
+    auto d = jobPrivate<SignEncryptArchiveJobPrivate>(this);
+    d->m_inputPaths = paths;
+}
+
+std::vector<QString> SignEncryptArchiveJob::inputPaths() const
+{
+    auto d = jobPrivate<SignEncryptArchiveJobPrivate>(this);
+    return d->m_inputPaths;
+}
+
+void SignEncryptArchiveJob::setOutputFile(const QString &path)
+{
+    auto d = jobPrivate<SignEncryptArchiveJobPrivate>(this);
+    d->m_outputFilePath = path;
+}
+
+QString SignEncryptArchiveJob::outputFile() const
+{
+    auto d = jobPrivate<SignEncryptArchiveJobPrivate>(this);
+    return d->m_outputFilePath;
+}
+
+void SignEncryptArchiveJob::setEncryptionFlags(GpgME::Context::EncryptionFlags flags)
+{
+    auto d = jobPrivate<SignEncryptArchiveJobPrivate>(this);
+    d->m_encryptionFlags = static_cast<GpgME::Context::EncryptionFlags>(flags | GpgME::Context::EncryptArchive);
+}
+
+GpgME::Context::EncryptionFlags SignEncryptArchiveJob::encryptionFlags() const
+{
+    auto d = jobPrivate<SignEncryptArchiveJobPrivate>(this);
+    return d->m_encryptionFlags;
+}
+
 void SignEncryptArchiveJob::setBaseDirectory(const QString &baseDirectory)
 {
     auto d = jobPrivate<SignEncryptArchiveJobPrivate>(this);
diff --git a/lang/qt/src/signencryptarchivejob.h b/lang/qt/src/signencryptarchivejob.h
index a14b6d64..fddf3012 100644
--- a/lang/qt/src/signencryptarchivejob.h
+++ b/lang/qt/src/signencryptarchivejob.h
@@ -63,6 +63,61 @@ public:
 
     static bool isSupported();
 
+    /**
+     * Sets the keys to use for signing the archive.
+     *
+     * Used if the job is started with startIt().
+     */
+    void setSigners(const std::vector<GpgME::Key> &signers);
+    std::vector<GpgME::Key> signers() const;
+
+    /**
+     * Sets the keys to use for encrypting the archive.
+     *
+     * Used if the job is started with startIt().
+     */
+    void setRecipients(const std::vector<GpgME::Key> &recipients);
+    std::vector<GpgME::Key> recipients() const;
+
+    /**
+     * Sets the paths of the files and folders to put into the archive.
+     *
+     * If base directory is set, then the paths must be relative to the
+     * base directory.
+     *
+     * Used if the job is started with startIt().
+     */
+    void setInputPaths(const std::vector<QString> &paths);
+    std::vector<QString> inputPaths() const;
+
+    /**
+     * Sets the path of the file to write the created archive to.
+     *
+     * If \a path is a relative path and base directory is set, then the
+     * path is interpreted relative to the base directory.
+     *
+     * Used if the job is started with startIt().
+     *
+     * \note If a file with this path exists, then the job will fail, i.e. you
+     * need to delete an existing file that shall be overwritten before you
+     * start the job.
+     */
+    void setOutputFile(const QString &path);
+    QString outputFile() const;
+
+    /**
+     * Sets the flags to use for encryption. Defaults to \c EncryptArchive.
+     * The \c EncryptArchive flag is always assumed set for this job.
+     *
+     * Used if the job is started with startIt().
+     */
+    void setEncryptionFlags(GpgME::Context::EncryptionFlags flags);
+    GpgME::Context::EncryptionFlags encryptionFlags() const;
+
+    /**
+     * Sets the base directory for the relative paths of the input files and
+     * the output file.
+     */
     void setBaseDirectory(const QString &baseDirectory);
     QString baseDirectory() const;
 
diff --git a/lang/qt/src/signencryptarchivejob_p.h b/lang/qt/src/signencryptarchivejob_p.h
index 2732fd0a..3ae7a4c1 100644
--- a/lang/qt/src/signencryptarchivejob_p.h
+++ b/lang/qt/src/signencryptarchivejob_p.h
@@ -41,7 +41,12 @@ namespace QGpgME
 
 struct SignEncryptArchiveJobPrivate : public JobPrivate
 {
+    std::vector<GpgME::Key> m_signers;
+    std::vector<GpgME::Key> m_recipients;
+    std::vector<QString> m_inputPaths;
+    QString m_outputFilePath;
     QString m_baseDirectory;
+    GpgME::Context::EncryptionFlags m_encryptionFlags = GpgME::Context::EncryptArchive;
 };
 
 }
diff --git a/lang/qt/tests/run-encryptarchivejob.cpp b/lang/qt/tests/run-encryptarchivejob.cpp
index 9ce79b6c..afbb13c0 100644
--- a/lang/qt/tests/run-encryptarchivejob.cpp
+++ b/lang/qt/tests/run-encryptarchivejob.cpp
@@ -41,7 +41,9 @@
 #include <QCommandLineParser>
 #include <QCoreApplication>
 #include <QDebug>
+#include <QDir>
 #include <QFile>
+#include <QFileInfo>
 
 #include <context.h>
 #include <encryptionresult.h>
@@ -95,23 +97,14 @@ CommandLineOptions parseCommandLine(const QStringList &arguments)
     return options;
 }
 
-std::shared_ptr<QIODevice> createOutput(const QString &fileName)
+QString checkOutputFilePath(const QString &fileName, const QString &baseDirectory)
 {
-    std::shared_ptr<QFile> output;
-
-    if (fileName.isEmpty()) {
-        output.reset(new QFile);
-        output->open(stdout, QIODevice::WriteOnly);
-    } else {
-        if (QFile::exists(fileName)) {
-            qCritical() << "File" << fileName << "exists. Bailing out.";
-        } else {
-            output.reset(new QFile{fileName});
-            output->open(QIODevice::WriteOnly);
-        }
+    const QFileInfo fi{QDir{baseDirectory}, fileName};
+    if (fi.exists()) {
+        qCritical() << "File" << fi.filePath() << "exists. Bailing out.";
+        return {};
     }
-
-    return output;
+    return fileName;
 }
 
 int main(int argc, char **argv)
@@ -129,9 +122,16 @@ int main(int argc, char **argv)
         return 1;
     }
 
-    auto output = createOutput(options.archiveName);
-    if (!output) {
-        return 1;
+    std::shared_ptr<QFile> output;
+    QString outputFilePath;
+    if (options.archiveName.isEmpty() || options.archiveName == QLatin1String{"-"}) {
+        output.reset(new QFile);
+        output->open(stdout, QIODevice::WriteOnly);
+    } else {
+        outputFilePath = checkOutputFilePath(options.archiveName, options.baseDirectory);
+        if (outputFilePath.isEmpty()) {
+            return 1;
+        }
     }
 
     if (options.sign) {
@@ -148,7 +148,14 @@ int main(int argc, char **argv)
             qApp->quit();
         });
 
-        const auto err = job->start({}, {}, options.filesAndDirectories, output, GpgME::Context::None);
+        GpgME::Error err;
+        if (output) {
+            err = job->start({}, {}, options.filesAndDirectories, output, GpgME::Context::None);
+        } else {
+            job->setInputPaths(options.filesAndDirectories);
+            job->setOutputFile(outputFilePath);
+            err = job->startIt();
+        }
         if (err) {
             std::cerr << "Error: Starting the job failed: " << err.asString() << std::endl;
             return 1;
@@ -166,7 +173,14 @@ int main(int argc, char **argv)
             qApp->quit();
         });
 
-        const auto err = job->start({}, options.filesAndDirectories, output, GpgME::Context::None);
+        GpgME::Error err;
+        if (output) {
+            err = job->start({}, options.filesAndDirectories, output, GpgME::Context::None);
+        } else {
+            job->setInputPaths(options.filesAndDirectories);
+            job->setOutputFile(outputFilePath);
+            err = job->startIt();
+        }
         if (err) {
             std::cerr << "Error: Starting the job failed: " << err.asString() << std::endl;
             return 1;
diff --git a/lang/qt/tests/run-signarchivejob.cpp b/lang/qt/tests/run-signarchivejob.cpp
index affd8e4d..4bf769b2 100644
--- a/lang/qt/tests/run-signarchivejob.cpp
+++ b/lang/qt/tests/run-signarchivejob.cpp
@@ -40,7 +40,9 @@
 #include <QCommandLineParser>
 #include <QCoreApplication>
 #include <QDebug>
+#include <QDir>
 #include <QFile>
+#include <QFileInfo>
 
 #include <context.h>
 #include <signingresult.h>
@@ -90,23 +92,14 @@ CommandLineOptions parseCommandLine(const QStringList &arguments)
     return options;
 }
 
-std::shared_ptr<QIODevice> createOutput(const QString &fileName)
+QString checkOutputFilePath(const QString &fileName, const QString &baseDirectory)
 {
-    std::shared_ptr<QFile> output;
-
-    if (fileName.isEmpty()) {
-        output.reset(new QFile);
-        output->open(stdout, QIODevice::WriteOnly);
-    } else {
-        if (QFile::exists(fileName)) {
-            qCritical() << "File" << fileName << "exists. Bailing out.";
-        } else {
-            output.reset(new QFile{fileName});
-            output->open(QIODevice::WriteOnly);
-        }
+    const QFileInfo fi{QDir{baseDirectory}, fileName};
+    if (fi.exists()) {
+        qCritical() << "File" << fi.filePath() << "exists. Bailing out.";
+        return {};
     }
-
-    return output;
+    return fileName;
 }
 
 int main(int argc, char **argv)
@@ -123,9 +116,16 @@ int main(int argc, char **argv)
         return 1;
     }
 
-    auto output = createOutput(options.archiveName);
-    if (!output) {
-        return 1;
+    std::shared_ptr<QFile> output;
+    QString outputFilePath;
+    if (options.archiveName.isEmpty() || options.archiveName == QLatin1String{"-"}) {
+        output.reset(new QFile);
+        output->open(stdout, QIODevice::WriteOnly);
+    } else {
+        outputFilePath = checkOutputFilePath(options.archiveName, options.baseDirectory);
+        if (outputFilePath.isEmpty()) {
+            return 1;
+        }
     }
 
     auto job = QGpgME::openpgp()->signArchiveJob(options.armor);
@@ -140,7 +140,14 @@ int main(int argc, char **argv)
         qApp->quit();
     });
 
-    const auto err = job->start({}, options.filesAndDirectories, output);
+    GpgME::Error err;
+    if (output) {
+        err = job->start({}, options.filesAndDirectories, output);
+    } else {
+        job->setInputPaths(options.filesAndDirectories);
+        job->setOutputFile(outputFilePath);
+        err = job->startIt();
+    }
     if (err) {
         std::cerr << "Error: Starting the job failed: " << err.asString() << std::endl;
         return 1;