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145 | // Copyright (C) 2022-2025 Internet Systems Consortium, Inc. ("ISC")
//
// This Source Code Form is subject to the terms of the Mozilla Public
// License, v. 2.0. If a copy of the MPL was not distributed with this
// file, You can obtain one at http://mozilla.org/MPL/2.0/.
/// @file This file contains tests which exercise the load and unload
/// functions in the ddns tuning hook library. In order to test the load
/// function, one must be able to pass it hook library parameters. The
/// the only way to populate these parameters is by actually loading the
/// library via HooksManager::loadLibraries().
#include <config.h>
#include <dhcpsrv/testutils/lib_load_test_fixture.h>
#include <testutils/gtest_utils.h>
#include <gtest/gtest.h>
#include <errno.h>
using namespace std;
using namespace isc;
using namespace isc::hooks;
using namespace isc::data;
using namespace isc::dhcp;
using namespace isc::process;
namespace {
/// @brief Test fixture for testing loading and unloading the lease cmds library
class LeaseCmdsCbLibLoadTest : public isc::test::LibLoadTest {
public:
/// @brief Constructor
LeaseCmdsCbLibLoadTest()
: LibLoadTest(LIBDHCP_LEASE_CMDS_SO),
hook_index_lease4_offer_(0),
hook_index_leasesX_committed_(0) {
}
/// @brief Destructor
virtual ~LeaseCmdsCbLibLoadTest() {
unloadLibraries();
}
/// @brief Registers hooks in the hook manager.
///
/// Normally this is done by the server core code.
void registerHooks() {
if (isc::dhcp::CfgMgr::instance().getFamily() == AF_INET) {
hook_index_lease4_offer_ = HooksManager::registerHook("lease4_offer");
hook_index_leasesX_committed_ = HooksManager::registerHook("leases4_committed");
} else {
hook_index_leasesX_committed_ = HooksManager::registerHook("leases6_committed");
}
}
/// @brief Checks that expected callouts are present.
void calloutsPresent() {
bool result;
ASSERT_NO_THROW_LOG(result = HooksManager::calloutsPresent(hook_index_lease4_offer_));
EXPECT_EQ(result, (isc::dhcp::CfgMgr::instance().getFamily() == AF_INET));
ASSERT_NO_THROW_LOG(result = HooksManager::calloutsPresent(hook_index_leasesX_committed_));
EXPECT_EQ(result, true);
}
/// @brief Creates a set of configuration parameters valid for the library.
/// Note the expressions are protocol agnostic for simplicity.
virtual isc::data::ElementPtr validConfigParams() {
std::string valid_config =
R"({"binding-variables":[
{
"name": "one",
"expression": "'just a string'",
"source": "query"
},
{
"name": "two",
"expression": "'another string'",
"source": "response"
} ]})";
// Convert JSON texts to Element map.
return (Element::fromJSON(valid_config));
}
/// @brief Hook index values.
int hook_index_lease4_offer_;
int hook_index_leasesX_committed_;
};
// Simple V4 test that checks the library can be loaded and unloaded several times.
TEST_F(LeaseCmdsCbLibLoadTest, validLoad4) {
validDaemonTest("kea-dhcp4", AF_INET, valid_params_);
}
// Simple V6 test that checks the library can be loaded and unloaded several times.
TEST_F(LeaseCmdsCbLibLoadTest, validLoad6) {
validDaemonTest("kea-dhcp6", AF_INET6, valid_params_);
}
// Simple test that checks the library cannot by loaded by invalid daemons.
TEST_F(LeaseCmdsCbLibLoadTest, invalidDaemonLoad) {
invalidDaemonTest("kea-ctrl-agent");
invalidDaemonTest("kea-dhcp-ddns");
invalidDaemonTest("bogus");
}
// Verifies that callout functions exist after loading the library.
TEST_F(LeaseCmdsCbLibLoadTest, verifyCallouts4) {
// Set family and daemon's proc name and register hook points.
isc::dhcp::CfgMgr::instance().setFamily(AF_INET);
isc::process::Daemon::setProcName("kea-dhcp4");
registerHooks();
// Add library to config and load it.
ASSERT_NO_THROW_LOG(addLibrary(lib_so_name_, valid_params_));
ASSERT_NO_THROW_LOG(loadLibraries());
// Verify that expected callouts are present.
calloutsPresent();
// Unload the library.
ASSERT_NO_THROW_LOG(unloadLibraries());
}
// Verifies that callout functions exist after loading the library.
TEST_F(LeaseCmdsCbLibLoadTest, verifyCallouts6) {
// Set family and daemon's proc name and register hook points.
isc::dhcp::CfgMgr::instance().setFamily(AF_INET6);
isc::process::Daemon::setProcName("kea-dhcp6");
registerHooks();
// Add library to config and load it.
ASSERT_NO_THROW_LOG(addLibrary(lib_so_name_, valid_params_));
ASSERT_NO_THROW_LOG(loadLibraries());
// Verify that expected callouts are present.
calloutsPresent();
// Unload the library.
ASSERT_NO_THROW_LOG(unloadLibraries());
}
} // end of anonymous namespace
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