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a4199814a0
Co-authored-by: Jason Dellaluce <jasondellaluce@gmail.com Signed-off-by: Leonardo Grasso <me@leonardograsso.com>
286 lines
9.0 KiB
C++
286 lines
9.0 KiB
C++
/*
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Copyright (C) 2020 The Falco Authors.
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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*/
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#include "ruleset.h"
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#include <catch.hpp>
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static bool exact_match = true;
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static bool substring_match = false;
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static bool enabled = true;
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static bool disabled = false;
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static uint16_t default_ruleset = 0;
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static uint16_t non_default_ruleset = 3;
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static uint16_t other_non_default_ruleset = 2;
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static std::set<std::string> tags = {"some_tag", "some_other_tag"};
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static std::shared_ptr<gen_event_filter> create_filter()
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{
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// The actual contents of the filters don't matter here.
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sinsp_filter_compiler compiler(NULL, "evt.type=open");
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sinsp_filter *f = compiler.compile();
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std::shared_ptr<gen_event_filter> ret(f);
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return ret;
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}
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TEST_CASE("Should enable/disable for exact match w/ default ruleset", "[rulesets]")
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{
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falco_ruleset r;
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std::shared_ptr<gen_event_filter> filter = create_filter();
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string rule_name = "one_rule";
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string source = "syscall";
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r.add(source, rule_name, tags, filter);
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r.enable("one_rule", exact_match, enabled);
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REQUIRE(r.num_rules_for_ruleset(default_ruleset) == 1);
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r.enable("one_rule", exact_match, disabled);
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REQUIRE(r.num_rules_for_ruleset(default_ruleset) == 0);
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}
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TEST_CASE("Should enable/disable for exact match w/ specific ruleset", "[rulesets]")
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{
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falco_ruleset r;
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std::shared_ptr<gen_event_filter> filter = create_filter();
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string rule_name = "one_rule";
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string source = "syscall";
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r.add(source, rule_name, tags, filter);
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r.enable("one_rule", exact_match, enabled, non_default_ruleset);
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REQUIRE(r.num_rules_for_ruleset(non_default_ruleset) == 1);
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REQUIRE(r.num_rules_for_ruleset(default_ruleset) == 0);
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REQUIRE(r.num_rules_for_ruleset(other_non_default_ruleset) == 0);
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r.enable("one_rule", exact_match, disabled, non_default_ruleset);
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REQUIRE(r.num_rules_for_ruleset(non_default_ruleset) == 0);
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REQUIRE(r.num_rules_for_ruleset(default_ruleset) == 0);
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REQUIRE(r.num_rules_for_ruleset(other_non_default_ruleset) == 0);
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}
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TEST_CASE("Should not enable for exact match different rule name", "[rulesets]")
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{
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falco_ruleset r;
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std::shared_ptr<gen_event_filter> filter = create_filter();
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string rule_name = "one_rule";
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string source = "syscall";
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r.add(source, rule_name, tags, filter);
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r.enable("some_other_rule", exact_match, enabled);
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REQUIRE(r.num_rules_for_ruleset(default_ruleset) == 0);
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}
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TEST_CASE("Should enable/disable for exact match w/ substring and default ruleset", "[rulesets]")
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{
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falco_ruleset r;
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std::shared_ptr<gen_event_filter> filter = create_filter();
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string rule_name = "one_rule";
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string source = "syscall";
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r.add(source, rule_name, tags, filter);
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r.enable("one_rule", substring_match, enabled);
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REQUIRE(r.num_rules_for_ruleset(default_ruleset) == 1);
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r.enable("one_rule", substring_match, disabled);
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REQUIRE(r.num_rules_for_ruleset(default_ruleset) == 0);
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}
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TEST_CASE("Should not enable for substring w/ exact_match", "[rulesets]")
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{
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falco_ruleset r;
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std::shared_ptr<gen_event_filter> filter = create_filter();
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string rule_name = "one_rule";
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string source = "syscall";
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r.add(source, rule_name, tags, filter);
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r.enable("one_", exact_match, enabled);
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REQUIRE(r.num_rules_for_ruleset(default_ruleset) == 0);
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}
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TEST_CASE("Should enable/disable for prefix match w/ default ruleset", "[rulesets]")
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{
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falco_ruleset r;
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std::shared_ptr<gen_event_filter> filter = create_filter();
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string rule_name = "one_rule";
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string source = "syscall";
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r.add(source, rule_name, tags, filter);
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r.enable("one_", substring_match, enabled);
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REQUIRE(r.num_rules_for_ruleset(default_ruleset) == 1);
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r.enable("one_", substring_match, disabled);
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REQUIRE(r.num_rules_for_ruleset(default_ruleset) == 0);
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}
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TEST_CASE("Should enable/disable for suffix match w/ default ruleset", "[rulesets]")
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{
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falco_ruleset r;
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std::shared_ptr<gen_event_filter> filter = create_filter();
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string rule_name = "one_rule";
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string source = "syscall";
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r.add(source, rule_name, tags, filter);
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r.enable("_rule", substring_match, enabled);
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REQUIRE(r.num_rules_for_ruleset(default_ruleset) == 1);
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r.enable("_rule", substring_match, disabled);
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REQUIRE(r.num_rules_for_ruleset(default_ruleset) == 0);
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}
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TEST_CASE("Should enable/disable for substring match w/ default ruleset", "[rulesets]")
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{
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falco_ruleset r;
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std::shared_ptr<gen_event_filter> filter = create_filter();
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string rule_name = "one_rule";
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string source = "syscall";
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r.add(source, rule_name, tags, filter);
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r.enable("ne_ru", substring_match, enabled);
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REQUIRE(r.num_rules_for_ruleset(default_ruleset) == 1);
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r.enable("ne_ru", substring_match, disabled);
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REQUIRE(r.num_rules_for_ruleset(default_ruleset) == 0);
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}
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TEST_CASE("Should enable/disable for substring match w/ specific ruleset", "[rulesets]")
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{
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falco_ruleset r;
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std::shared_ptr<gen_event_filter> filter = create_filter();
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string rule_name = "one_rule";
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string source = "syscall";
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r.add(source, rule_name, tags, filter);
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r.enable("ne_ru", substring_match, enabled, non_default_ruleset);
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REQUIRE(r.num_rules_for_ruleset(non_default_ruleset) == 1);
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REQUIRE(r.num_rules_for_ruleset(default_ruleset) == 0);
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REQUIRE(r.num_rules_for_ruleset(other_non_default_ruleset) == 0);
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r.enable("ne_ru", substring_match, disabled, non_default_ruleset);
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REQUIRE(r.num_rules_for_ruleset(non_default_ruleset) == 0);
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REQUIRE(r.num_rules_for_ruleset(default_ruleset) == 0);
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REQUIRE(r.num_rules_for_ruleset(other_non_default_ruleset) == 0);
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}
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TEST_CASE("Should enable/disable for tags w/ default ruleset", "[rulesets]")
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{
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falco_ruleset r;
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std::shared_ptr<gen_event_filter> filter = create_filter();
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string rule_name = "one_rule";
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string source = "syscall";
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std::set<std::string> want_tags = {"some_tag"};
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r.add(source, rule_name, tags, filter);
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r.enable_tags(want_tags, enabled);
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REQUIRE(r.num_rules_for_ruleset(default_ruleset) == 1);
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r.enable_tags(want_tags, disabled);
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REQUIRE(r.num_rules_for_ruleset(default_ruleset) == 0);
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}
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TEST_CASE("Should enable/disable for tags w/ specific ruleset", "[rulesets]")
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{
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falco_ruleset r;
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std::shared_ptr<gen_event_filter> filter = create_filter();
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string rule_name = "one_rule";
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string source = "syscall";
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std::set<std::string> want_tags = {"some_tag"};
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r.add(source, rule_name, tags, filter);
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r.enable_tags(want_tags, enabled, non_default_ruleset);
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REQUIRE(r.num_rules_for_ruleset(non_default_ruleset) == 1);
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REQUIRE(r.num_rules_for_ruleset(default_ruleset) == 0);
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REQUIRE(r.num_rules_for_ruleset(other_non_default_ruleset) == 0);
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r.enable_tags(want_tags, disabled, non_default_ruleset);
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REQUIRE(r.num_rules_for_ruleset(non_default_ruleset) == 0);
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REQUIRE(r.num_rules_for_ruleset(default_ruleset) == 0);
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REQUIRE(r.num_rules_for_ruleset(other_non_default_ruleset) == 0);
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}
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TEST_CASE("Should not enable for different tags", "[rulesets]")
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{
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falco_ruleset r;
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std::shared_ptr<gen_event_filter> filter = create_filter();
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string rule_name = "one_rule";
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string source = "syscall";
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std::set<std::string> want_tags = {"some_different_tag"};
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r.add(source, rule_name, tags, filter);
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r.enable_tags(want_tags, enabled);
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REQUIRE(r.num_rules_for_ruleset(non_default_ruleset) == 0);
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}
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TEST_CASE("Should enable/disable for overlapping tags", "[rulesets]")
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{
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falco_ruleset r;
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std::shared_ptr<gen_event_filter> filter = create_filter();
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string rule_name = "one_rule";
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string source = "syscall";
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std::set<std::string> want_tags = {"some_tag", "some_different_tag"};
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r.add(source, rule_name, tags, filter);
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r.enable_tags(want_tags, enabled);
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REQUIRE(r.num_rules_for_ruleset(default_ruleset) == 1);
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r.enable_tags(want_tags, disabled);
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REQUIRE(r.num_rules_for_ruleset(default_ruleset) == 0);
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}
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TEST_CASE("Should enable/disable for incremental adding tags", "[rulesets]")
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{
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string source = "syscall";
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falco_ruleset r;
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std::shared_ptr<gen_event_filter> rule1_filter = create_filter();
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string rule1_name = "one_rule";
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std::set<std::string> rule1_tags = {"rule1_tag"};
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r.add(source, rule1_name, rule1_tags, rule1_filter);
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std::shared_ptr<gen_event_filter> rule2_filter = create_filter();
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string rule2_name = "two_rule";
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std::set<std::string> rule2_tags = {"rule2_tag"};
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r.add(source, rule2_name, rule2_tags, rule2_filter);
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std::set<std::string> want_tags;
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want_tags = rule1_tags;
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r.enable_tags(want_tags, enabled);
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REQUIRE(r.num_rules_for_ruleset(default_ruleset) == 1);
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want_tags = rule2_tags;
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r.enable_tags(want_tags, enabled);
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REQUIRE(r.num_rules_for_ruleset(default_ruleset) == 2);
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r.enable_tags(want_tags, disabled);
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REQUIRE(r.num_rules_for_ruleset(default_ruleset) == 1);
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want_tags = rule1_tags;
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r.enable_tags(want_tags, disabled);
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REQUIRE(r.num_rules_for_ruleset(default_ruleset) == 0);
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}
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