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// Copyright Contributors to the DNF5 project.
// Copyright Contributors to the libdnf project.
// SPDX-License-Identifier: GPL-2.0-or-later
//
// This file is part of libdnf: https://github.com/rpm-software-management/libdnf/
//
// Libdnf 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.
//
// Libdnf 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 libdnf. If not, see <https://www.gnu.org/licenses/>.
#include "offline.hpp"
#include "dbus.hpp"
#include "utils/string.hpp"
#include <libdnf5/transaction/offline.hpp>
#include <sdbus-c++/sdbus-c++.h>
#include <exception>
#include <filesystem>
const char * const ERR_ANOTHER_TOOL = "Offline transaction was initiated by another tool.";
std::filesystem::path Offline::get_datadir() {
auto base = session.get_base();
const auto & installroot = base->get_config().get_installroot_option().get_value();
return installroot / libdnf5::offline::DEFAULT_DATADIR.relative_path();
}
std::filesystem::path Offline::get_destdir() {
auto base = session.get_base();
const auto & installroot = base->get_config().get_installroot_option().get_value();
return installroot / libdnf5::offline::DEFAULT_DESTDIR.relative_path();
}
Offline::Scheduled Offline::offline_transaction_scheduled() {
std::error_code ec;
// magic symlink exists
if (std::filesystem::exists(libdnf5::offline::MAGIC_SYMLINK, ec)) {
// and points to dnf5 location
if (std::filesystem::equivalent(libdnf5::offline::MAGIC_SYMLINK, get_datadir())) {
return Scheduled::SCHEDULED;
} else {
return Scheduled::ANOTHER_TOOL;
}
}
return Scheduled::NOT_SCHEDULED;
}
void Offline::dbus_register() {
auto dbus_object = session.get_dbus_object();
#ifdef SDBUS_CPP_VERSION_2
dbus_object
->addVTable(
sdbus::MethodVTableItem{
sdbus::MethodName{"cancel_with_options"},
sdbus::Signature{"a{sv}"},
{"options"},
sdbus::Signature{"bs"},
{"success", "error_msg"},
[this](sdbus::MethodCall call) -> void {
session.get_threads_manager().handle_method(
*this, &Offline::cancel_with_options, call, session.session_locale);
},
{}},
sdbus::MethodVTableItem{
sdbus::MethodName{"cancel"},
{},
{},
sdbus::Signature{"bs"},
{"success", "error_msg"},
[this](sdbus::MethodCall call) -> void {
session.get_threads_manager().handle_method(*this, &Offline::cancel, call, session.session_locale);
},
{}},
sdbus::MethodVTableItem{
sdbus::MethodName{"get_status"},
{},
{},
sdbus::Signature{"ba{sv}"},
{"is_pending", "transaction_status"},
[this](sdbus::MethodCall call) -> void {
session.get_threads_manager().handle_method(
*this, &Offline::get_status, call, session.session_locale);
},
{}},
sdbus::MethodVTableItem{
sdbus::MethodName{"clean_with_options"},
sdbus::Signature{"a{sv}"},
{"options"},
sdbus::Signature{"bs"},
{"success", "error_msg"},
[this](sdbus::MethodCall call) -> void {
session.get_threads_manager().handle_method(
*this, &Offline::clean_with_options, call, session.session_locale);
},
{}},
sdbus::MethodVTableItem{
sdbus::MethodName{"clean"},
{},
{},
sdbus::Signature{"bs"},
{"success", "error_msg"},
[this](sdbus::MethodCall call) -> void {
session.get_threads_manager().handle_method(*this, &Offline::clean, call, session.session_locale);
},
{}},
sdbus::MethodVTableItem{
sdbus::MethodName{"set_finish_action_with_options"},
sdbus::Signature{"sa{sv}"},
{"action", "options"},
sdbus::Signature{"bs"},
{"success", "error_msg"},
[this](sdbus::MethodCall call) -> void {
session.get_threads_manager().handle_method(
*this, &Offline::set_finish_action_with_options, call, session.session_locale);
},
{}},
sdbus::MethodVTableItem{
sdbus::MethodName{"set_finish_action"},
sdbus::Signature{"s"},
{"action"},
sdbus::Signature{"bs"},
{"success", "error_msg"},
[this](sdbus::MethodCall call) -> void {
session.get_threads_manager().handle_method(
*this, &Offline::set_finish_action, call, session.session_locale);
},
{}})
.forInterface(dnfdaemon::INTERFACE_OFFLINE);
#else
dbus_object->registerMethod(
dnfdaemon::INTERFACE_OFFLINE,
"cancel_with_options",
{"a{sv}"},
{"options"},
"bs",
{"success", "error_msg"},
[this](sdbus::MethodCall call) -> void {
session.get_threads_manager().handle_method(
*this, &Offline::cancel_with_options, call, session.session_locale);
});
dbus_object->registerMethod(
dnfdaemon::INTERFACE_OFFLINE,
"cancel",
{},
{},
"bs",
{"success", "error_msg"},
[this](sdbus::MethodCall call) -> void {
session.get_threads_manager().handle_method(*this, &Offline::cancel, call, session.session_locale);
});
dbus_object->registerMethod(
dnfdaemon::INTERFACE_OFFLINE,
"get_status",
{},
{},
"ba{sv}",
{"is_pending", "transaction_status"},
[this](sdbus::MethodCall call) -> void {
session.get_threads_manager().handle_method(*this, &Offline::get_status, call, session.session_locale);
});
dbus_object->registerMethod(
dnfdaemon::INTERFACE_OFFLINE,
"clean_with_options",
{"a{sv}"},
{"options"},
"bs",
{"success", "error_msg"},
[this](sdbus::MethodCall call) -> void {
session.get_threads_manager().handle_method(
*this, &Offline::clean_with_options, call, session.session_locale);
});
dbus_object->registerMethod(
dnfdaemon::INTERFACE_OFFLINE,
"clean",
{},
{},
"bs",
{"success", "error_msg"},
[this](sdbus::MethodCall call) -> void {
session.get_threads_manager().handle_method(*this, &Offline::clean, call, session.session_locale);
});
dbus_object->registerMethod(
dnfdaemon::INTERFACE_OFFLINE,
"set_finish_action_with_options",
"sa{sv}",
{"action", "options"},
"bs",
{"success", "error_msg"},
[this](sdbus::MethodCall call) -> void {
session.get_threads_manager().handle_method(
*this, &Offline::set_finish_action_with_options, call, session.session_locale);
});
dbus_object->registerMethod(
dnfdaemon::INTERFACE_OFFLINE,
"set_finish_action",
"s",
{"action"},
"bs",
{"success", "error_msg"},
[this](sdbus::MethodCall call) -> void {
session.get_threads_manager().handle_method(
*this, &Offline::set_finish_action, call, session.session_locale);
});
#endif
}
sdbus::MethodReply Offline::get_status(sdbus::MethodCall & call) {
dnfdaemon::KeyValueMap transaction_state;
const std::filesystem::path state_path{get_datadir() / libdnf5::offline::TRANSACTION_STATE_FILENAME};
// try load the offline transaction state
libdnf5::offline::OfflineTransactionState state{state_path};
if (!state.get_read_exception()) {
const auto & state_data = state.get_data();
transaction_state["status"] = sdbus::Variant(state_data.get_status());
transaction_state["cachedir"] = sdbus::Variant(state_data.get_cachedir());
transaction_state["target_releasever"] = sdbus::Variant(state_data.get_target_releasever());
transaction_state["system_releasever"] = sdbus::Variant(state_data.get_system_releasever());
transaction_state["verb"] = sdbus::Variant(state_data.get_verb());
transaction_state["cmd_line"] = sdbus::Variant(state_data.get_cmd_line());
transaction_state["poweroff_after"] = sdbus::Variant(state_data.get_poweroff_after());
transaction_state["module_platform_id"] = sdbus::Variant(state_data.get_module_platform_id());
}
auto reply = call.createReply();
reply << (offline_transaction_scheduled() == Scheduled::SCHEDULED);
reply << transaction_state;
return reply;
}
sdbus::MethodReply Offline::impl_cancel(sdbus::MethodCall & call, const dnfdaemon::KeyValueMap & options) {
bool interactive = dnfdaemon::key_value_map_get<bool>(options, "interactive", true);
if (!session.check_authorization(
dnfdaemon::POLKIT_EXECUTE_RPM_TRUSTED_TRANSACTION, call.getSender(), interactive)) {
throw std::runtime_error("Not authorized");
}
bool success = true;
std::string error_msg;
switch (offline_transaction_scheduled()) {
case Scheduled::SCHEDULED: {
std::error_code ec;
if (!std::filesystem::remove(libdnf5::offline::MAGIC_SYMLINK, ec) && ec) {
success = false;
error_msg = ec.message();
}
} break;
case Scheduled::ANOTHER_TOOL:
success = false;
error_msg = ERR_ANOTHER_TOOL;
break;
case Scheduled::NOT_SCHEDULED:
break;
}
auto reply = call.createReply();
reply << success;
reply << error_msg;
return reply;
}
sdbus::MethodReply Offline::cancel_with_options(sdbus::MethodCall & call) {
dnfdaemon::KeyValueMap options;
call >> options;
return impl_cancel(call, options);
}
sdbus::MethodReply Offline::cancel(sdbus::MethodCall & call) {
dnfdaemon::KeyValueMap options{};
return impl_cancel(call, options);
}
sdbus::MethodReply Offline::impl_clean(sdbus::MethodCall & call, const dnfdaemon::KeyValueMap & options) {
bool interactive = dnfdaemon::key_value_map_get<bool>(options, "interactive", true);
if (!session.check_authorization(
dnfdaemon::POLKIT_EXECUTE_RPM_TRUSTED_TRANSACTION, call.getSender(), interactive)) {
throw std::runtime_error("Not authorized");
}
std::vector<std::string> error_msgs;
bool success = true;
if (offline_transaction_scheduled() == Scheduled::SCHEDULED) {
// remove the magic symlink if it was created by dnf5
std::error_code ec;
if (!std::filesystem::remove(libdnf5::offline::MAGIC_SYMLINK, ec) && ec) {
success = false;
error_msgs.push_back(ec.message());
}
}
// clean dnf5 offline transaction files
for (const auto & entry : std::filesystem::directory_iterator(get_datadir())) {
std::error_code ec;
std::filesystem::remove_all(entry.path(), ec);
if (ec) {
success = false;
error_msgs.push_back(ec.message());
}
}
// clean dnf5 offline packages destdir
for (const auto & entry : std::filesystem::directory_iterator(get_destdir())) {
std::error_code ec;
std::filesystem::remove_all(entry.path(), ec);
if (ec) {
success = false;
error_msgs.push_back(ec.message());
}
}
auto reply = call.createReply();
reply << success;
reply << libdnf5::utils::string::join(error_msgs, ", ");
return reply;
}
sdbus::MethodReply Offline::clean_with_options(sdbus::MethodCall & call) {
dnfdaemon::KeyValueMap options;
call >> options;
return impl_clean(call, options);
}
sdbus::MethodReply Offline::clean(sdbus::MethodCall & call) {
dnfdaemon::KeyValueMap options{};
return impl_clean(call, options);
}
sdbus::MethodReply Offline::impl_set_finish_action(
sdbus::MethodCall & call, const std::string & action, const dnfdaemon::KeyValueMap & options) {
bool interactive = dnfdaemon::key_value_map_get<bool>(options, "interactive", true);
if (!session.check_authorization(
dnfdaemon::POLKIT_EXECUTE_RPM_TRUSTED_TRANSACTION, call.getSender(), interactive)) {
throw std::runtime_error("Not authorized");
}
bool success{false};
std::string error_msg{};
// check finish_action validity
if (action != "poweroff" && action != "reboot") {
error_msg =
fmt::format("Unsupported finish action \"{}\". Valid options are \"reboot\", or \"poweroff\".", action);
} else {
const std::filesystem::path state_path{get_datadir() / libdnf5::offline::TRANSACTION_STATE_FILENAME};
std::error_code ec;
// check presence of transaction state file
if (!std::filesystem::exists(state_path, ec)) {
error_msg = "No offline transaction is configured. Cannot set the finish action.";
} else {
// try load the offline transaction state
libdnf5::offline::OfflineTransactionState state{state_path};
const auto & read_exception = state.get_read_exception();
if (read_exception == nullptr) {
// set the poweroff_after item accordingly
state.get_data().set_poweroff_after(action == "poweroff");
// write the new state
state.write();
success = true;
} else {
try {
std::rethrow_exception(read_exception);
} catch (const std::exception & ex) {
error_msg = ex.what();
}
}
}
}
auto reply = call.createReply();
reply << success;
reply << error_msg;
return reply;
}
sdbus::MethodReply Offline::set_finish_action_with_options(sdbus::MethodCall & call) {
std::string action;
dnfdaemon::KeyValueMap options;
call >> action >> options;
return impl_set_finish_action(call, action, options);
}
sdbus::MethodReply Offline::set_finish_action(sdbus::MethodCall & call) {
std::string action;
dnfdaemon::KeyValueMap options{};
call >> action;
return impl_set_finish_action(call, action, options);
}
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