| /* |
| * Copyright 2016 The Android Open Source Project |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| * |
| * FirewallControllerTest.cpp - unit tests for FirewallController.cpp |
| */ |
| |
| #include <string> |
| #include <vector> |
| #include <stdio.h> |
| |
| #include <gtest/gtest.h> |
| |
| #include <android-base/strings.h> |
| #include <android-base/stringprintf.h> |
| |
| #include "FirewallController.h" |
| #include "IptablesBaseTest.h" |
| |
| using android::base::Join; |
| using android::base::StringPrintf; |
| |
| class FirewallControllerTest : public IptablesBaseTest { |
| protected: |
| FirewallControllerTest() { |
| FirewallController::execIptablesRestore = fakeExecIptablesRestore; |
| mFw.mUseBpfOwnerMatch = false; |
| } |
| FirewallController mFw; |
| |
| std::string makeUidRules(IptablesTarget a, const char* b, bool c, |
| const std::vector<int32_t>& d) { |
| return mFw.makeUidRules(a, b, c, d); |
| } |
| |
| int createChain(const char* a, FirewallType b) { |
| return mFw.createChain(a, b); |
| } |
| }; |
| |
| |
| TEST_F(FirewallControllerTest, TestCreateWhitelistChain) { |
| std::vector<std::string> expectedRestore4 = { |
| "*filter", |
| ":fw_whitelist -", |
| "-A fw_whitelist -m owner --uid-owner 0-9999 -j RETURN", |
| "-A fw_whitelist -m owner ! --uid-owner 0-4294967294 -j RETURN", |
| "-A fw_whitelist -p esp -j RETURN", |
| "-A fw_whitelist -i lo -j RETURN", |
| "-A fw_whitelist -o lo -j RETURN", |
| "-A fw_whitelist -p tcp --tcp-flags RST RST -j RETURN", |
| "-A fw_whitelist -j DROP", |
| "COMMIT\n" |
| }; |
| std::vector<std::string> expectedRestore6 = { |
| "*filter", |
| ":fw_whitelist -", |
| "-A fw_whitelist -m owner --uid-owner 0-9999 -j RETURN", |
| "-A fw_whitelist -m owner ! --uid-owner 0-4294967294 -j RETURN", |
| "-A fw_whitelist -p esp -j RETURN", |
| "-A fw_whitelist -i lo -j RETURN", |
| "-A fw_whitelist -o lo -j RETURN", |
| "-A fw_whitelist -p tcp --tcp-flags RST RST -j RETURN", |
| "-A fw_whitelist -p icmpv6 --icmpv6-type packet-too-big -j RETURN", |
| "-A fw_whitelist -p icmpv6 --icmpv6-type router-solicitation -j RETURN", |
| "-A fw_whitelist -p icmpv6 --icmpv6-type router-advertisement -j RETURN", |
| "-A fw_whitelist -p icmpv6 --icmpv6-type neighbour-solicitation -j RETURN", |
| "-A fw_whitelist -p icmpv6 --icmpv6-type neighbour-advertisement -j RETURN", |
| "-A fw_whitelist -p icmpv6 --icmpv6-type redirect -j RETURN", |
| "-A fw_whitelist -j DROP", |
| "COMMIT\n" |
| }; |
| std::vector<std::pair<IptablesTarget, std::string>> expectedRestoreCommands = { |
| { V4, android::base::Join(expectedRestore4, '\n') }, |
| { V6, android::base::Join(expectedRestore6, '\n') }, |
| }; |
| |
| createChain("fw_whitelist", WHITELIST); |
| expectIptablesRestoreCommands(expectedRestoreCommands); |
| } |
| |
| TEST_F(FirewallControllerTest, TestCreateBlacklistChain) { |
| std::vector<std::string> expectedRestore = { |
| "*filter", |
| ":fw_blacklist -", |
| "-A fw_blacklist -i lo -j RETURN", |
| "-A fw_blacklist -o lo -j RETURN", |
| "-A fw_blacklist -p tcp --tcp-flags RST RST -j RETURN", |
| "COMMIT\n" |
| }; |
| std::vector<std::pair<IptablesTarget, std::string>> expectedRestoreCommands = { |
| { V4, android::base::Join(expectedRestore, '\n') }, |
| { V6, android::base::Join(expectedRestore, '\n') }, |
| }; |
| |
| createChain("fw_blacklist", BLACKLIST); |
| expectIptablesRestoreCommands(expectedRestoreCommands); |
| } |
| |
| TEST_F(FirewallControllerTest, TestSetStandbyRule) { |
| ExpectedIptablesCommands expected = { |
| { V4V6, "*filter\n-D fw_standby -m owner --uid-owner 12345 -j DROP\nCOMMIT\n" } |
| }; |
| mFw.setUidRule(STANDBY, 12345, ALLOW); |
| expectIptablesRestoreCommands(expected); |
| |
| expected = { |
| { V4V6, "*filter\n-A fw_standby -m owner --uid-owner 12345 -j DROP\nCOMMIT\n" } |
| }; |
| mFw.setUidRule(STANDBY, 12345, DENY); |
| expectIptablesRestoreCommands(expected); |
| } |
| |
| TEST_F(FirewallControllerTest, TestSetDozeRule) { |
| ExpectedIptablesCommands expected = { |
| { V4V6, "*filter\n-I fw_dozable -m owner --uid-owner 54321 -j RETURN\nCOMMIT\n" } |
| }; |
| mFw.setUidRule(DOZABLE, 54321, ALLOW); |
| expectIptablesRestoreCommands(expected); |
| |
| expected = { |
| { V4V6, "*filter\n-D fw_dozable -m owner --uid-owner 54321 -j RETURN\nCOMMIT\n" } |
| }; |
| mFw.setUidRule(DOZABLE, 54321, DENY); |
| expectIptablesRestoreCommands(expected); |
| } |
| |
| TEST_F(FirewallControllerTest, TestSetFirewallRule) { |
| ExpectedIptablesCommands expected = { |
| { V4V6, "*filter\n" |
| "-A fw_INPUT -m owner --uid-owner 54321 -j DROP\n" |
| "-A fw_OUTPUT -m owner --uid-owner 54321 -j DROP\n" |
| "COMMIT\n" } |
| }; |
| mFw.setUidRule(NONE, 54321, DENY); |
| expectIptablesRestoreCommands(expected); |
| |
| expected = { |
| { V4V6, "*filter\n" |
| "-D fw_INPUT -m owner --uid-owner 54321 -j DROP\n" |
| "-D fw_OUTPUT -m owner --uid-owner 54321 -j DROP\n" |
| "COMMIT\n" } |
| }; |
| mFw.setUidRule(NONE, 54321, ALLOW); |
| expectIptablesRestoreCommands(expected); |
| } |
| |
| TEST_F(FirewallControllerTest, TestReplaceWhitelistUidRule) { |
| std::string expected = |
| "*filter\n" |
| ":FW_whitechain -\n" |
| "-A FW_whitechain -m owner --uid-owner 10023 -j RETURN\n" |
| "-A FW_whitechain -m owner --uid-owner 10059 -j RETURN\n" |
| "-A FW_whitechain -m owner --uid-owner 10124 -j RETURN\n" |
| "-A FW_whitechain -m owner --uid-owner 10111 -j RETURN\n" |
| "-A FW_whitechain -m owner --uid-owner 110122 -j RETURN\n" |
| "-A FW_whitechain -m owner --uid-owner 210153 -j RETURN\n" |
| "-A FW_whitechain -m owner --uid-owner 210024 -j RETURN\n" |
| "-A FW_whitechain -m owner --uid-owner 0-9999 -j RETURN\n" |
| "-A FW_whitechain -m owner ! --uid-owner 0-4294967294 -j RETURN\n" |
| "-A FW_whitechain -p esp -j RETURN\n" |
| "-A FW_whitechain -i lo -j RETURN\n" |
| "-A FW_whitechain -o lo -j RETURN\n" |
| "-A FW_whitechain -p tcp --tcp-flags RST RST -j RETURN\n" |
| "-A FW_whitechain -p icmpv6 --icmpv6-type packet-too-big -j RETURN\n" |
| "-A FW_whitechain -p icmpv6 --icmpv6-type router-solicitation -j RETURN\n" |
| "-A FW_whitechain -p icmpv6 --icmpv6-type router-advertisement -j RETURN\n" |
| "-A FW_whitechain -p icmpv6 --icmpv6-type neighbour-solicitation -j RETURN\n" |
| "-A FW_whitechain -p icmpv6 --icmpv6-type neighbour-advertisement -j RETURN\n" |
| "-A FW_whitechain -p icmpv6 --icmpv6-type redirect -j RETURN\n" |
| "-A FW_whitechain -j DROP\n" |
| "COMMIT\n"; |
| |
| std::vector<int32_t> uids = { 10023, 10059, 10124, 10111, 110122, 210153, 210024 }; |
| EXPECT_EQ(expected, makeUidRules(V6, "FW_whitechain", true, uids)); |
| } |
| |
| TEST_F(FirewallControllerTest, TestReplaceBlacklistUidRule) { |
| std::string expected = |
| "*filter\n" |
| ":FW_blackchain -\n" |
| "-A FW_blackchain -i lo -j RETURN\n" |
| "-A FW_blackchain -o lo -j RETURN\n" |
| "-A FW_blackchain -p tcp --tcp-flags RST RST -j RETURN\n" |
| "-A FW_blackchain -m owner --uid-owner 10023 -j DROP\n" |
| "-A FW_blackchain -m owner --uid-owner 10059 -j DROP\n" |
| "-A FW_blackchain -m owner --uid-owner 10124 -j DROP\n" |
| "COMMIT\n"; |
| |
| std::vector<int32_t> uids = { 10023, 10059, 10124 }; |
| EXPECT_EQ(expected, makeUidRules(V4 ,"FW_blackchain", false, uids)); |
| } |
| |
| TEST_F(FirewallControllerTest, TestEnableChildChains) { |
| std::vector<std::string> expected = { |
| "*filter\n" |
| "-A fw_INPUT -j fw_dozable\n" |
| "-A fw_OUTPUT -j fw_dozable\n" |
| "COMMIT\n" |
| }; |
| EXPECT_EQ(0, mFw.enableChildChains(DOZABLE, true)); |
| expectIptablesRestoreCommands(expected); |
| |
| expected = { |
| "*filter\n" |
| "-D fw_INPUT -j fw_powersave\n" |
| "-D fw_OUTPUT -j fw_powersave\n" |
| "COMMIT\n" |
| }; |
| EXPECT_EQ(0, mFw.enableChildChains(POWERSAVE, false)); |
| expectIptablesRestoreCommands(expected); |
| } |
| |
| TEST_F(FirewallControllerTest, TestFirewall) { |
| std::vector<std::string> enableCommands = { |
| "*filter\n" |
| "-A fw_INPUT -j DROP\n" |
| "-A fw_OUTPUT -j REJECT\n" |
| "-A fw_FORWARD -j REJECT\n" |
| "COMMIT\n" |
| }; |
| std::vector<std::string> disableCommands = { |
| "*filter\n" |
| ":fw_INPUT -\n" |
| ":fw_OUTPUT -\n" |
| ":fw_FORWARD -\n" |
| "COMMIT\n" |
| }; |
| std::vector<std::string> noCommands = {}; |
| |
| EXPECT_EQ(0, mFw.disableFirewall()); |
| expectIptablesRestoreCommands(disableCommands); |
| |
| EXPECT_EQ(0, mFw.disableFirewall()); |
| expectIptablesRestoreCommands(disableCommands); |
| |
| EXPECT_EQ(0, mFw.enableFirewall(BLACKLIST)); |
| expectIptablesRestoreCommands(disableCommands); |
| |
| EXPECT_EQ(0, mFw.enableFirewall(BLACKLIST)); |
| expectIptablesRestoreCommands(noCommands); |
| |
| std::vector<std::string> disableEnableCommands; |
| disableEnableCommands.insert( |
| disableEnableCommands.end(), disableCommands.begin(), disableCommands.end()); |
| disableEnableCommands.insert( |
| disableEnableCommands.end(), enableCommands.begin(), enableCommands.end()); |
| |
| EXPECT_EQ(0, mFw.enableFirewall(WHITELIST)); |
| expectIptablesRestoreCommands(disableEnableCommands); |
| |
| std::vector<std::string> ifaceCommands = { |
| "*filter\n" |
| "-I fw_INPUT -i rmnet_data0 -j RETURN\n" |
| "-I fw_OUTPUT -o rmnet_data0 -j RETURN\n" |
| "COMMIT\n" |
| }; |
| EXPECT_EQ(0, mFw.setInterfaceRule("rmnet_data0", ALLOW)); |
| expectIptablesRestoreCommands(ifaceCommands); |
| |
| EXPECT_EQ(0, mFw.setInterfaceRule("rmnet_data0", ALLOW)); |
| expectIptablesRestoreCommands(noCommands); |
| |
| ifaceCommands = { |
| "*filter\n" |
| "-D fw_INPUT -i rmnet_data0 -j RETURN\n" |
| "-D fw_OUTPUT -o rmnet_data0 -j RETURN\n" |
| "COMMIT\n" |
| }; |
| EXPECT_EQ(0, mFw.setInterfaceRule("rmnet_data0", DENY)); |
| expectIptablesRestoreCommands(ifaceCommands); |
| |
| EXPECT_EQ(0, mFw.setInterfaceRule("rmnet_data0", DENY)); |
| expectIptablesRestoreCommands(noCommands); |
| |
| EXPECT_EQ(0, mFw.enableFirewall(WHITELIST)); |
| expectIptablesRestoreCommands(noCommands); |
| |
| EXPECT_EQ(0, mFw.disableFirewall()); |
| expectIptablesRestoreCommands(disableCommands); |
| |
| // TODO: calling disableFirewall and then enableFirewall(WHITELIST) does |
| // nothing. This seems like a clear bug. |
| EXPECT_EQ(0, mFw.enableFirewall(WHITELIST)); |
| expectIptablesRestoreCommands(noCommands); |
| } |