cpp,qt: Remove C++ and Qt bindings

* README: Update.
* configure.ac: Remove checks, variables and file generations related to
the C++/Qt bindings. Remove cpp and qt* from available_languages and
default_languages.
* lang/Makefile.am (DIST_SUBDIRS): Remove cpp and qt.
* lang/cpp, lang/qt: Remove.
* m4/ax_check_compile_flag.m4, m4/ax_cxx_compile_stdcxx.m4,
m4/ax_gcc_func_attribute.m4, m4/pkg.m4, m4/qt5.m4, m4/qt6.m4: Remove.
--

The C++ and Qt bindings have been moved to separate Git repositories:
gpgmepp and gpgmeqt.

GnuPG-bug-id: 7262

1 files changed, 0 insertions, 185 deletions

diff --git a/lang/qt/src/qgpgmewkdlookupjob.cpp b/lang/qt/src/qgpgmewkdlookupjob.cpp
deleted file mode 100644
index 76f5b728..00000000
--- a/lang/qt/src/qgpgmewkdlookupjob.cpp
+++ /dev/null
@@ -1,185 +0,0 @@
-/*
-    qgpgmewkdlookupjob.cpp
-
-    This file is part of qgpgme, the Qt API binding for gpgme
-    Copyright (c) 2021 g10 Code GmbH
-    Software engineering by Ingo Klöcker <[email protected]>
-
-    QGpgME is free software; you can redistribute it and/or
-    modify it under the terms of the GNU General Public License as
-    published by the Free Software Foundation; either version 2 of the
-    License, or (at your option) any later version.
-
-    QGpgME is distributed in the hope that it will be useful,
-    but WITHOUT ANY WARRANTY; without even the implied warranty of
-    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
-    General Public License for more details.
-
-    You should have received a copy of the GNU General Public License
-    along with this program; if not, write to the Free Software
-    Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
-
-    In addition, as a special exception, the copyright holders give
-    permission to link the code of this program with any edition of
-    the Qt library by Trolltech AS, Norway (or with modified versions
-    of Qt that use the same license as Qt), and distribute linked
-    combinations including the two.  You must obey the GNU General
-    Public License in all respects for all of the code used other than
-    Qt.  If you modify this file, you may extend this exception to
-    your version of the file, but you are not obligated to do so.  If
-    you do not wish to do so, delete this exception statement from
-    your version.
-*/
-
-#ifdef HAVE_CONFIG_H
- #include "config.h"
-#endif
-
-#include "qgpgmewkdlookupjob.h"
-
-#include "debug.h"
-#include "qgpgme_debug.h"
-
-#include <gpgme++/context.h>
-#include <gpgme++/data.h>
-#include <gpgme++/defaultassuantransaction.h>
-
-#include <gpg-error.h>
-
-using namespace QGpgME;
-using namespace GpgME;
-
-QGpgMEWKDLookupJob::QGpgMEWKDLookupJob(Context *context)
-    : mixin_type{context}
-{
-    lateInitialization();
-}
-
-QGpgMEWKDLookupJob::~QGpgMEWKDLookupJob() = default;
-
-static GpgME::Error startDirmngr(Context *assuanCtx)
-{
-    Error err;
-
-    auto spawnCtx = std::unique_ptr<Context>{Context::createForEngine(SpawnEngine, &err)};
-    if (err) {
-        qCDebug(QGPGME_LOG) << "Error: Failed to get context for spawn engine (" << err << ")";
-    }
-    const auto gpgconfProgram = GpgME::dirInfo("gpgconf-name");
-    // replace backslashes with forward slashes in homedir to work around bug T6833
-    std::string homedir{GpgME::dirInfo("homedir")};
-    std::replace(homedir.begin(), homedir.end(), '\\', '/');
-    const char *argv[] = {
-        gpgconfProgram,
-        "--homedir",
-        homedir.c_str(),
-        "--launch",
-        "dirmngr",
-        NULL
-    };
-    auto ignoreIO = Data{Data::null};
-    if (!err) {
-        qCDebug(QGPGME_LOG) << "Starting dirmngr ...";
-        err = spawnCtx->spawn(gpgconfProgram, argv,
-                              ignoreIO, ignoreIO, ignoreIO,
-                              Context::SpawnDetached);
-    }
-
-    if (!err) {
-        // wait for socket to become available
-        int cnt = 0;
-        do {
-            ++cnt;
-            qCDebug(QGPGME_LOG) << "Waiting for dirmngr to start ...";
-            QThread::msleep(250 * cnt);
-            err = assuanCtx->assuanTransact("GETINFO version");
-        } while (err.code() == GPG_ERR_ASS_CONNECT_FAILED && cnt < 5);
-    }
-
-    return err;
-}
-
-static GpgME::Error setUpDirmngrAssuanConnection(Context *ctx)
-{
-    Error err;
-
-    const std::string dirmngrSocket = GpgME::dirInfo("dirmngr-socket");
-    err = ctx->setEngineFileName(dirmngrSocket.c_str());
-
-    if (!err) {
-        err = ctx->setEngineHomeDirectory("");
-    }
-
-    if (!err) {
-        // try do connect to dirmngr
-        err = ctx->assuanTransact("GETINFO version");
-        if (err.code() == GPG_ERR_ASS_CONNECT_FAILED) {
-            err = startDirmngr(ctx);
-        }
-    }
-
-    return err;
-}
-
-static GpgME::Error run_wkd_get(Context *ctx, const std::string &email)
-{
-    Error err;
-
-    const auto cmd = std::string{"WKD_GET "} + email;
-    err = ctx->assuanTransact(cmd.c_str());
-    if (err.code() == GPG_ERR_NO_NAME || err.code() == GPG_ERR_NO_DATA) {
-        // ignore those benign errors; GPG_ERR_NO_NAME indicates that the domain
-        // doesn't exist (on first request); GPG_ERR_NO_DATA indicates that
-        // no key for email is available via WKD or that the domain doesn't
-        // support WKD or that the domain doesn't exist (on subsequent requests
-        // using dirmngr's internal cache)
-        qCDebug(QGPGME_LOG) << "WKD_GET returned" << err << "; ignoring...";
-        err = {};
-    }
-    if (err) {
-        qCDebug(QGPGME_LOG) << "WKD_GET failed with" << err;
-    }
-
-    return err;
-}
-
-static QGpgMEWKDLookupJob::result_type lookup_keys(Context *ctx, const QString &email)
-{
-    WKDLookupResult result;
-
-    Error err = setUpDirmngrAssuanConnection(ctx);
-
-    const auto pattern = email.toUtf8().toStdString();
-    if (!err) {
-        err = run_wkd_get(ctx, pattern);
-    }
-
-    if (!err) {
-        const auto transaction = std::unique_ptr<DefaultAssuanTransaction>(dynamic_cast<DefaultAssuanTransaction*>(ctx->takeLastAssuanTransaction().release()));
-        const auto source = transaction->firstStatusLine("SOURCE");
-        const auto rawData = transaction->data();
-        if (rawData.size() == 0) {
-            qCDebug(QGPGME_LOG) << "No key found for" << email;
-            result = WKDLookupResult{pattern, GpgME::Data::null, {}, {}};
-        } else {
-            qCDebug(QGPGME_LOG) << "Found key for" << email << "at" << source.c_str();
-            result = WKDLookupResult{pattern, GpgME::Data{rawData.c_str(), rawData.size()}, source, {}};
-        }
-    }
-
-    return std::make_tuple(err ? WKDLookupResult{pattern, err} : result, QString{}, Error{});
-}
-
-Error QGpgMEWKDLookupJob::start(const QString &email)
-{
-    run(std::bind(&lookup_keys, std::placeholders::_1, email));
-    return Error();
-}
-
-WKDLookupResult QGpgMEWKDLookupJob::exec(const QString &email)
-{
-    const result_type r = lookup_keys(context(), email);
-    return std::get<0>(r);
-}
-
-#include "qgpgmewkdlookupjob.moc"