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// Copyright Contributors to the DNF5 project.
// Copyright Contributors to the libdnf project.
// SPDX-License-Identifier: LGPL-2.1-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 Lesser General Public License as published by
// the Free Software Foundation, either version 2.1 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 Lesser General Public License for more details.
//
// You should have received a copy of the GNU Lesser General Public License
// along with libdnf. If not, see <https://www.gnu.org/licenses/>.
#include "library.hpp"
#include "libdnf5/utils/bgettext/bgettext-mark-domain.h"
#include <dlfcn.h>
namespace libdnf5::utils {
Library::Library(const std::string & path) : path(path) {
// the NODELETE is needed to not garbage plugin's libraries global data,
// like when the plugin uses glib, then it could break its type system
handle = dlopen(path.c_str(), RTLD_LAZY | RTLD_NODELETE);
if (!handle) {
const char * err_msg = dlerror(); // returns localized message, problem with later translation
throw LibraryLoadingError(M_("Cannot load shared library \"{}\": {}"), path, std::string(err_msg));
}
}
Library::~Library() {
dlclose(handle);
}
void * Library::get_address(const char * symbol) const {
dlerror(); // Clear any existing error
void * address = dlsym(handle, symbol);
if (!address) {
const char * err_msg = dlerror(); // returns localized message, problem with later translation
throw LibrarySymbolNotFoundError(
M_("Cannot obtain address of symbol \"{}\": {}"),
std::string(symbol),
err_msg ? std::string(err_msg) : "unknown error");
}
return address;
}
} // namespace libdnf5::utils
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