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// Copyright Contributors to the dnf5 project.
// SPDX-License-Identifier: LGPL-2.1-or-later
//
// This file is part of dnf5: https://github.com/rpm-software-management/dnf5/
//
// 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 <fcntl.h>
#include <libdnf5/base/base.hpp>
#include <libdnf5/common/exception.hpp>
#include <libdnf5/plugin/iplugin.hpp>
#include <libdnf5/utils/bgettext/bgettext-mark-domain.h>
#include <rhsm/rhsm.h>
#include <unistd.h>
using namespace libdnf5;
namespace {
constexpr const char * PLUGIN_NAME = "rhsm";
constexpr plugin::Version PLUGIN_VERSION{0, 1, 0};
constexpr PluginAPIVersion REQUIRED_PLUGIN_API_VERSION{.major = 2, .minor = 0};
constexpr const char * attrs[]{"author.name", "author.email", "description", nullptr};
constexpr const char * attrs_value[]{
"Jaroslav Rohel", "jrohel@redhat.com", "RHSM (Red Hat Subscription Manager) Plugin."};
class Rhsm : public plugin::IPlugin {
public:
Rhsm(libdnf5::plugin::IPluginData & data, libdnf5::ConfigParser &) : IPlugin(data) {}
virtual ~Rhsm() = default;
PluginAPIVersion get_api_version() const noexcept override { return REQUIRED_PLUGIN_API_VERSION; }
const char * get_name() const noexcept override { return PLUGIN_NAME; }
plugin::Version get_version() const noexcept override { return PLUGIN_VERSION; }
const char * const * get_attributes() const noexcept override { return attrs; }
const char * get_attribute(const char * attribute) const noexcept override {
for (size_t i = 0; attrs[i]; ++i) {
if (std::strcmp(attribute, attrs[i]) == 0) {
return attrs_value[i];
}
}
return nullptr;
}
void post_base_setup() override { setup_enrollments(); }
private:
void setup_enrollments();
};
class RhsmPluginError : public libdnf5::Error {
using Error::Error;
const char * get_domain_name() const noexcept override { return "libdnf5::plugin"; }
const char * get_name() const noexcept override { return "RhsmPluginError"; }
};
// Resyncs the enrollment with the vendor system. This can change the contents
// of the repositories configuration files according to the subscription levels.
void Rhsm::setup_enrollments() {
const auto & config = get_base().get_config();
// All of the subman stuff only works as root, if we're not
// root, assume we're running in the test suite, or we're part of
// e.g. rpm-ostree which is trying to run totally as non-root.
if (getuid() != 0) {
return;
}
// If /var/lib/rhsm exists, then we can assume that
// subscription-manager is installed, and thus don't need to
// manage redhat.repo via librhsm.
if (g_file_test("/var/lib/rhsm", G_FILE_TEST_EXISTS)) {
return;
}
const auto & repo_dirs = config.get_reposdir_option().get_value();
if (repo_dirs.empty()) {
throw RhsmPluginError(M_("Missing path to repository configuration directory"));
}
g_autofree gchar * repofname = g_build_filename(repo_dirs[0].c_str(), "redhat.repo", NULL);
g_autoptr(RHSMContext) rhsm_ctx = rhsm_context_new();
g_autoptr(GKeyFile) repofile = rhsm_utils_yum_repo_from_context(rhsm_ctx);
bool same_content = false;
do {
int fd;
if ((fd = open(repofname, O_RDONLY | O_CLOEXEC)) == -1) {
break;
}
gsize length;
g_autofree gchar * data = g_key_file_to_data(repofile, &length, NULL);
auto file_len = lseek(fd, 0, SEEK_END);
if (file_len != static_cast<off_t>(length)) {
close(fd);
break;
}
if (length > 0) {
g_autofree gchar * buf = g_new(gchar, length);
lseek(fd, 0, SEEK_SET);
auto readed = read(fd, buf, length);
close(fd);
if (readed != file_len || memcmp(buf, data, length) != 0) {
break;
}
} else {
close(fd);
}
same_content = true;
} while (false);
if (!same_content) {
g_autoptr(GError) err = NULL;
if (!g_key_file_save_to_file(repofile, repofname, &err)) {
throw RhsmPluginError(
M_("Cannot save repository configuration to file \"{}\": {}"),
std::string(repofname),
std::string(err->message));
}
}
}
std::exception_ptr last_exception;
} // namespace
PluginAPIVersion libdnf_plugin_get_api_version(void) {
return REQUIRED_PLUGIN_API_VERSION;
}
const char * libdnf_plugin_get_name(void) {
return PLUGIN_NAME;
}
plugin::Version libdnf_plugin_get_version(void) {
return PLUGIN_VERSION;
}
plugin::IPlugin * libdnf_plugin_new_instance(
[[maybe_unused]] LibraryVersion library_version,
libdnf5::plugin::IPluginData & data,
libdnf5::ConfigParser & parser) try {
return new Rhsm(data, parser);
} catch (...) {
last_exception = std::current_exception();
return nullptr;
}
void libdnf_plugin_delete_instance(plugin::IPlugin * plugin_object) {
delete plugin_object;
}
std::exception_ptr * libdnf_plugin_get_last_exception(void) {
return &last_exception;
}
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