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303 | // Copyright (C) 2022-2023 Internet Systems Consortium, Inc. ("ISC")
//
// This Source Code Form is subject to the terms of the Kea Hooks Basic
// Commercial End User License Agreement v2.0. See COPYING file in the premium/
// directory.
/// @file This file contains tests which verify flexible option.
#include <config.h>
#include <ddns_tuning.h><--- Include file: not found. Please note: Cppcheck does not need standard library headers to get proper results.
#include <ddns_tuning_log.h><--- Include file: not found. Please note: Cppcheck does not need standard library headers to get proper results.
#include <asiolink/io_address.h>
#include <dhcp/libdhcp++.h>
#include <dhcp/option_string.h>
#include <dhcpsrv/cfgmgr.h>
#include <dhcpsrv/subnet.h>
#include <eval/eval_context.h>
#include <hooks/callout_manager.h>
#include <hooks/hooks.h>
#include <testutils/gtest_utils.h>
#include <testutils/multi_threading_utils.h>
#include <boost/date_time/posix_time/posix_time.hpp><--- Include file: not found. Please note: Cppcheck does not need standard library headers to get proper results.
#include <gtest/gtest.h><--- Include file: not found. Please note: Cppcheck does not need standard library headers to get proper results.
#include <sstream><--- Include file: not found. Please note: Cppcheck does not need standard library headers to get proper results.
using namespace std;
using namespace isc;
using namespace isc::asiolink;
using namespace isc::data;
using namespace isc::dhcp;
using namespace isc::eval;
using namespace isc::hooks;
using namespace isc::ddns_tuning;
using namespace isc::test;
using namespace boost::posix_time;
namespace {
/// @brief ExpressionCache derivation that allows flush time to be modified.
class TestExpressionCache : public ExpressionCache {
public:
/// @brief Constructor
TestExpressionCache () {
}
/// @brief Destructor
virtual ~TestExpressionCache() {
}
/// @brief Adjusts the last flush time by the given amount.
///
/// @param offset signed value in seconds to add to cache's last
/// flush time value
void tweakLastFlushTime(int offset) {
setModificationTime(getLastFlushTime() + seconds(offset));
}
};
/// @brief Test fixture for testing ExpressionCache.
class ExpressionCacheTest : public ::testing::Test {
public:
/// @brief Constructor
ExpressionCacheTest () {
}
/// @brief Destructor
virtual ~ExpressionCacheTest() {
}
/// @brief Verifies construction of an ExpressionCache.
void testConstruction() {
// We use a BaseStampedElement to get the current time to ensure we
// are using the same time perspective (currently local) as StampedElements do.
BaseStampedElement now;
ptime start_time = now.getModificationTime();
// Create a new cache.
TestExpressionCache expressions;
// Verify that last_flush_time_ has been set and that the
// cache has no entries.
ptime last_flush_time = expressions.getLastFlushTime();
EXPECT_GE(last_flush_time, start_time);
EXPECT_EQ(expressions.size(), 0);
// Verify that looking for an entry in an empty cache
// gracefully finds nothing.
ExpressionPtr fetched_exp;
EXPECT_FALSE(expressions.findExpression(999, fetched_exp));
EXPECT_FALSE(fetched_exp);
}
/// @brief Verifies that invalid DHCPv4 expressions are rejected gracefully
void testInvalidExpressions4() {
// Create a new cache.
TestExpressionCache expressions;
// An invalid keyword should fail.
std::string expression_str("bogus");
ASSERT_THROW_MSG(expressions.parseAndCacheExpression(1, expression_str, AF_INET), BadValue,
"error parsing expression: [bogus] : <string>:1.1: Invalid character: b");
// Valid V4 should not be valid v6.
expression_str = "addrtotext(relay6[0].linkaddr)";
ASSERT_THROW_MSG(expressions.parseAndCacheExpression(1, expression_str, AF_INET), BadValue,
"error parsing expression: [addrtotext(relay6[0].linkaddr)] :"
" <string>:1.19: Nest level invalid for DHCPv4 packets");
EXPECT_EQ(expressions.size(), 0);
}
/// @brief Verifies that valid DHCPv4 expressions are cached correctly.
void testValidExpressions4() {
// Create a new cache.
TestExpressionCache expressions;
// Define some expression strings, including a empty one.
std::vector<std::string> expression_strs {
"option[host-name].hex + '.sample.com'",
"addrtotext(pkt4.yiaddr)",
"",
"'literal'"
};
// Verify that we can cache valid expressions.
int id = 1;
for (auto const& expression_str : expression_strs) {
ExpressionPtr expression;
ASSERT_NO_THROW_LOG(expression = expressions.parseAndCacheExpression(id, expression_str, AF_INET));
ASSERT_TRUE(expression);
EXPECT_EQ(expression->empty(), expression_str.empty());
EXPECT_EQ(expressions.size(), id);
// Verify we can retrieve the cached expression.
ExpressionPtr fetched_expression;
ASSERT_TRUE(expressions.findExpression(id, fetched_expression));
EXPECT_EQ(fetched_expression, expression);
++id;
}
}
/// @brief Verifies that invalid DHCPv6 expressions are rejected gracefully
void testInvalidExpressions6() {
// Create a new cache.
TestExpressionCache expressions;
// An invalid keyword should fail.
std::string expression_str("bogus");
ASSERT_THROW_MSG(expressions.parseAndCacheExpression(1, expression_str, AF_INET6), BadValue,
"error parsing expression: [bogus] : <string>:1.1: Invalid character: b");
// Valid V4 should not be valid v6.
expression_str = "addrtotext(pkt4.yiaddr)";
ASSERT_THROW_MSG(expressions.parseAndCacheExpression(1, expression_str, AF_INET6), BadValue,
"error parsing expression: [addrtotext(pkt4.yiaddr)] :"
" <string>:1.12-15: pkt4 can only be used in DHCPv4.");
EXPECT_EQ(expressions.size(), 0);
}
/// @brief Verifies that valid DHCPv6 expressions are cached correctly.
void testValidExpressions6() {
// Create a new cache.
TestExpressionCache expressions;
// Define some expression strings, including a empty one.
std::vector<std::string> expression_strs {
"option[clientid].hex + '.sample.com'",
"addrtotext(relay6[0].linkaddr)",
"",
"'literal'"
};
// Verify that we can cache valid expressions.
int id = 1;
for (auto const& expression_str : expression_strs) {
ExpressionPtr expression;
ASSERT_NO_THROW_LOG(expression = expressions.parseAndCacheExpression(id, expression_str, AF_INET6));
ASSERT_TRUE(expression);
EXPECT_EQ(expression->empty(), expression_str.empty());
EXPECT_EQ(expressions.size(), id);
// Verify we can retrieve the cached expression.
ExpressionPtr fetched_expression;
ASSERT_TRUE(expressions.findExpression(id, fetched_expression));
EXPECT_EQ(fetched_expression, expression);
++id;
}
}
/// @brief Verifies that null expression pointers can be cached.
void testExpressionCacheNullExpressions() {
// Create a new cache.
TestExpressionCache expressions;
EXPECT_EQ(expressions.size(), 0);
// Verify that we can cache a null pointer expression.
ExpressionPtr no_exp;
ASSERT_NO_THROW_LOG(expressions.cacheExpression(1, no_exp));
EXPECT_EQ(expressions.size(), 1);
// Verify we can retrieve the cached null expression pointer.
ExpressionPtr fetched_exp;
ASSERT_TRUE(expressions.findExpression(1, fetched_exp));
ASSERT_FALSE(fetched_exp);
}
/// @brief Verifies that the cache can be cleared correctly.
void testFlushCache() {
// Create a new cache.
TestExpressionCache expressions;
EXPECT_EQ(expressions.size(), 0);
ptime last_flush_time = expressions.getLastFlushTime();
// Now let's wind the clock back on last_flush_time.
expressions.tweakLastFlushTime(-1000);
EXPECT_LT(expressions.getLastFlushTime(), last_flush_time);
last_flush_time = expressions.getLastFlushTime();
std::vector<std::string> expression_strs { "'one'", "'two'", "'three'" };
int id = 1;
for (auto const& expression_str : expression_strs) {
ExpressionPtr expression;
ASSERT_NO_THROW_LOG(expression = expressions.parseAndCacheExpression(id, expression_str, AF_INET));
ASSERT_TRUE(expression);
EXPECT_EQ(expression->empty(), expression_str.empty());
EXPECT_EQ(expressions.size(), id);
++id;
}
// Verify we can explicitly clear the cache. Should be no entries
// and last_flush_time should be updated.
expressions.clear();
EXPECT_GT(expressions.getLastFlushTime(), last_flush_time);
EXPECT_EQ(expressions.size(), 0);
}
};
TEST_F(ExpressionCacheTest, construction) {<--- syntax error
testConstruction();
}
TEST_F(ExpressionCacheTest, constructionMultiThreading) {
MultiThreadingTest mt;
testConstruction();
}
TEST_F(ExpressionCacheTest, invalidExpressions4) {
testInvalidExpressions4();
}
TEST_F(ExpressionCacheTest, invalidExpressions4MultiThreading) {
MultiThreadingTest mt;
testInvalidExpressions4();
}
TEST_F(ExpressionCacheTest, validExpressions4) {
testValidExpressions4();
}
TEST_F(ExpressionCacheTest, validExpressions4MultiThreading) {
MultiThreadingTest mt;
testValidExpressions4();
}
TEST_F(ExpressionCacheTest, invalidExpressions6) {
testInvalidExpressions6();
}
TEST_F(ExpressionCacheTest, invalidExpressions6MultiThreading) {
MultiThreadingTest mt;
testInvalidExpressions6();
}
TEST_F(ExpressionCacheTest, validExpressions6) {
testValidExpressions6();
}
TEST_F(ExpressionCacheTest, validExpressions6MultiThreading) {
MultiThreadingTest mt;
testValidExpressions6();
}
TEST_F(ExpressionCacheTest, expressionCacheNullExpressions) {
testExpressionCacheNullExpressions();
}
TEST_F(ExpressionCacheTest, expressionCacheNullExpressionsMultiThreading) {
MultiThreadingTest mt;
testExpressionCacheNullExpressions();
}
TEST_F(ExpressionCacheTest, flushCache) {
testFlushCache();
}
TEST_F(ExpressionCacheTest, flushCacheMultiThreading) {
MultiThreadingTest mt;
testFlushCache();
}
} // end of anonymous namespace
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