| /* |
| * 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. |
| * |
| * BandwidthControllerTest.cpp - unit tests for BandwidthController.cpp |
| */ |
| |
| #include <string> |
| #include <vector> |
| |
| #include <fcntl.h> |
| #include <unistd.h> |
| #include <sys/types.h> |
| #include <sys/socket.h> |
| |
| #include <gtest/gtest.h> |
| |
| #include <android-base/strings.h> |
| |
| #include "BandwidthController.h" |
| #include "IptablesBaseTest.h" |
| |
| class BandwidthControllerTest : public IptablesBaseTest { |
| public: |
| BandwidthControllerTest() { |
| BandwidthController::execFunction = fake_android_fork_exec; |
| BandwidthController::popenFunction = fake_popen; |
| BandwidthController::iptablesRestoreFunction = fakeExecIptablesRestore; |
| } |
| BandwidthController mBw; |
| |
| void addPopenContents(std::string contents) { |
| sPopenContents.push_back(contents); |
| } |
| |
| void addPopenContents(std::string contents1, std::string contents2) { |
| sPopenContents.push_back(contents1); |
| sPopenContents.push_back(contents2); |
| } |
| |
| void clearPopenContents() { |
| sPopenContents.clear(); |
| } |
| }; |
| |
| TEST_F(BandwidthControllerTest, TestSetupIptablesHooks) { |
| mBw.setupIptablesHooks(); |
| std::vector<std::string> expected = { |
| "*filter\n" |
| ":bw_INPUT -\n" |
| ":bw_OUTPUT -\n" |
| ":bw_FORWARD -\n" |
| ":bw_happy_box -\n" |
| ":bw_penalty_box -\n" |
| ":bw_data_saver -\n" |
| ":bw_costly_shared -\n" |
| "COMMIT\n" |
| "*raw\n" |
| ":bw_raw_PREROUTING -\n" |
| "COMMIT\n" |
| "*mangle\n" |
| ":bw_mangle_POSTROUTING -\n" |
| "COMMIT\n\x04" |
| }; |
| expectIptablesRestoreCommands(expected); |
| } |
| |
| TEST_F(BandwidthControllerTest, TestEnableBandwidthControl) { |
| mBw.enableBandwidthControl(false); |
| std::string expectedFlush = |
| "*filter\n" |
| ":bw_INPUT -\n" |
| ":bw_OUTPUT -\n" |
| ":bw_FORWARD -\n" |
| ":bw_happy_box -\n" |
| ":bw_penalty_box -\n" |
| ":bw_data_saver -\n" |
| ":bw_costly_shared -\n" |
| "COMMIT\n" |
| "*raw\n" |
| ":bw_raw_PREROUTING -\n" |
| "COMMIT\n" |
| "*mangle\n" |
| ":bw_mangle_POSTROUTING -\n" |
| "COMMIT\n\x04"; |
| std::string expectedAccounting = |
| "*filter\n" |
| "-A bw_INPUT -m owner --socket-exists\n" |
| "-A bw_OUTPUT -m owner --socket-exists\n" |
| "-A bw_costly_shared --jump bw_penalty_box\n" |
| "-A bw_penalty_box --jump bw_happy_box\n" |
| "-A bw_happy_box --jump bw_data_saver\n" |
| "-A bw_data_saver -j RETURN\n" |
| "-I bw_happy_box -m owner --uid-owner 0-9999 --jump RETURN\n" |
| "COMMIT\n" |
| "*raw\n" |
| "-A bw_raw_PREROUTING -m owner --socket-exists\n" |
| "COMMIT\n" |
| "*mangle\n" |
| "-A bw_mangle_POSTROUTING -m owner --socket-exists\n" |
| "COMMIT\n\x04"; |
| |
| expectIptablesRestoreCommands({ expectedFlush, expectedAccounting }); |
| } |
| |
| TEST_F(BandwidthControllerTest, TestDisableBandwidthControl) { |
| mBw.disableBandwidthControl(); |
| const std::string expected = |
| "*filter\n" |
| ":bw_INPUT -\n" |
| ":bw_OUTPUT -\n" |
| ":bw_FORWARD -\n" |
| ":bw_happy_box -\n" |
| ":bw_penalty_box -\n" |
| ":bw_data_saver -\n" |
| ":bw_costly_shared -\n" |
| "COMMIT\n" |
| "*raw\n" |
| ":bw_raw_PREROUTING -\n" |
| "COMMIT\n" |
| "*mangle\n" |
| ":bw_mangle_POSTROUTING -\n" |
| "COMMIT\n\x04"; |
| expectIptablesRestoreCommands({ expected }); |
| } |
| |
| TEST_F(BandwidthControllerTest, TestEnableDataSaver) { |
| mBw.enableDataSaver(true); |
| std::vector<std::string> expected = { |
| "-R bw_data_saver 1 --jump REJECT", |
| }; |
| expectIptablesCommands(expected); |
| |
| mBw.enableDataSaver(false); |
| expected = { |
| "-R bw_data_saver 1 --jump RETURN", |
| }; |
| expectIptablesCommands(expected); |
| } |
| |
| std::string kIPv4TetherCounters = android::base::Join(std::vector<std::string> { |
| "Chain natctrl_tether_counters (4 references)", |
| " pkts bytes target prot opt in out source destination", |
| " 26 2373 RETURN all -- wlan0 rmnet0 0.0.0.0/0 0.0.0.0/0", |
| " 27 2002 RETURN all -- rmnet0 wlan0 0.0.0.0/0 0.0.0.0/0", |
| " 1040 107471 RETURN all -- bt-pan rmnet0 0.0.0.0/0 0.0.0.0/0", |
| " 1450 1708806 RETURN all -- rmnet0 bt-pan 0.0.0.0/0 0.0.0.0/0", |
| }, '\n'); |
| |
| std::string kIPv6TetherCounters = android::base::Join(std::vector<std::string> { |
| "Chain natctrl_tether_counters (2 references)", |
| " pkts bytes target prot opt in out source destination", |
| " 10000 10000000 RETURN all wlan0 rmnet0 ::/0 ::/0", |
| " 20000 20000000 RETURN all rmnet0 wlan0 ::/0 ::/0", |
| }, '\n'); |
| |
| std::string readSocketClientResponse(int fd) { |
| char buf[32768]; |
| ssize_t bytesRead = read(fd, buf, sizeof(buf)); |
| if (bytesRead < 0) { |
| return ""; |
| } |
| for (int i = 0; i < bytesRead; i++) { |
| if (buf[i] == '\0') buf[i] = '\n'; |
| } |
| return std::string(buf, bytesRead); |
| } |
| |
| void expectNoSocketClientResponse(int fd) { |
| char buf[64]; |
| EXPECT_EQ(-1, read(fd, buf, sizeof(buf))); |
| } |
| |
| TEST_F(BandwidthControllerTest, TestGetTetherStats) { |
| int socketPair[2]; |
| ASSERT_EQ(0, socketpair(AF_UNIX, SOCK_STREAM, 0, socketPair)); |
| ASSERT_EQ(0, fcntl(socketPair[0], F_SETFL, O_NONBLOCK | fcntl(socketPair[0], F_GETFL))); |
| ASSERT_EQ(0, fcntl(socketPair[1], F_SETFL, O_NONBLOCK | fcntl(socketPair[1], F_GETFL))); |
| SocketClient cli(socketPair[0], false); |
| |
| std::string err; |
| BandwidthController::TetherStats filter; |
| |
| // If no filter is specified, both IPv4 and IPv6 counters must have at least one interface pair. |
| addPopenContents(kIPv4TetherCounters, ""); |
| ASSERT_EQ(-1, mBw.getTetherStats(&cli, filter, err)); |
| expectNoSocketClientResponse(socketPair[1]); |
| clearPopenContents(); |
| |
| addPopenContents("", kIPv6TetherCounters); |
| ASSERT_EQ(-1, mBw.getTetherStats(&cli, filter, err)); |
| clearPopenContents(); |
| |
| // IPv4 and IPv6 counters are properly added together. |
| addPopenContents(kIPv4TetherCounters, kIPv6TetherCounters); |
| filter = BandwidthController::TetherStats(); |
| std::string expected = |
| "114 wlan0 rmnet0 10002373 10026 20002002 20027\n" |
| "114 bt-pan rmnet0 107471 1040 1708806 1450\n" |
| "200 Tethering stats list completed\n"; |
| ASSERT_EQ(0, mBw.getTetherStats(&cli, filter, err)); |
| ASSERT_EQ(expected, readSocketClientResponse(socketPair[1])); |
| expectNoSocketClientResponse(socketPair[1]); |
| clearPopenContents(); |
| |
| // Test filtering. |
| addPopenContents(kIPv4TetherCounters, kIPv6TetherCounters); |
| filter = BandwidthController::TetherStats("bt-pan", "rmnet0", -1, -1, -1, -1); |
| expected = "221 bt-pan rmnet0 107471 1040 1708806 1450\n"; |
| ASSERT_EQ(0, mBw.getTetherStats(&cli, filter, err)); |
| ASSERT_EQ(expected, readSocketClientResponse(socketPair[1])); |
| expectNoSocketClientResponse(socketPair[1]); |
| clearPopenContents(); |
| |
| addPopenContents(kIPv4TetherCounters, kIPv6TetherCounters); |
| filter = BandwidthController::TetherStats("wlan0", "rmnet0", -1, -1, -1, -1); |
| expected = "221 wlan0 rmnet0 10002373 10026 20002002 20027\n"; |
| ASSERT_EQ(0, mBw.getTetherStats(&cli, filter, err)); |
| ASSERT_EQ(expected, readSocketClientResponse(socketPair[1])); |
| clearPopenContents(); |
| |
| // Select nonexistent interfaces. |
| addPopenContents(kIPv4TetherCounters, kIPv6TetherCounters); |
| filter = BandwidthController::TetherStats("rmnet0", "foo0", -1, -1, -1, -1); |
| expected = "200 Tethering stats list completed\n"; |
| ASSERT_EQ(0, mBw.getTetherStats(&cli, filter, err)); |
| ASSERT_EQ(expected, readSocketClientResponse(socketPair[1])); |
| clearPopenContents(); |
| |
| // No stats with a filter: no error. |
| addPopenContents("", ""); |
| ASSERT_EQ(0, mBw.getTetherStats(&cli, filter, err)); |
| ASSERT_EQ("200 Tethering stats list completed\n", readSocketClientResponse(socketPair[1])); |
| clearPopenContents(); |
| |
| addPopenContents("foo", "foo"); |
| ASSERT_EQ(0, mBw.getTetherStats(&cli, filter, err)); |
| ASSERT_EQ("200 Tethering stats list completed\n", readSocketClientResponse(socketPair[1])); |
| clearPopenContents(); |
| |
| // No stats and empty filter: error. |
| filter = BandwidthController::TetherStats(); |
| addPopenContents("", kIPv6TetherCounters); |
| ASSERT_EQ(-1, mBw.getTetherStats(&cli, filter, err)); |
| expectNoSocketClientResponse(socketPair[1]); |
| clearPopenContents(); |
| |
| addPopenContents(kIPv4TetherCounters, ""); |
| ASSERT_EQ(-1, mBw.getTetherStats(&cli, filter, err)); |
| expectNoSocketClientResponse(socketPair[1]); |
| clearPopenContents(); |
| |
| // Include only one pair of interfaces and things are fine. |
| std::vector<std::string> counterLines = android::base::Split(kIPv4TetherCounters, "\n"); |
| std::vector<std::string> brokenCounterLines = counterLines; |
| counterLines.resize(4); |
| std::string counters = android::base::Join(counterLines, "\n") + "\n"; |
| addPopenContents(counters, counters); |
| expected = |
| "114 wlan0 rmnet0 4746 52 4004 54\n" |
| "200 Tethering stats list completed\n"; |
| ASSERT_EQ(0, mBw.getTetherStats(&cli, filter, err)); |
| ASSERT_EQ(expected, readSocketClientResponse(socketPair[1])); |
| clearPopenContents(); |
| |
| // But if interfaces aren't paired, it's always an error. |
| counterLines.resize(3); |
| counters = android::base::Join(counterLines, "\n") + "\n"; |
| addPopenContents(counters, counters); |
| ASSERT_EQ(-1, mBw.getTetherStats(&cli, filter, err)); |
| expectNoSocketClientResponse(socketPair[1]); |
| clearPopenContents(); |
| |
| // popen() failing is always an error. |
| addPopenContents(kIPv4TetherCounters); |
| ASSERT_EQ(-1, mBw.getTetherStats(&cli, filter, err)); |
| expectNoSocketClientResponse(socketPair[1]); |
| clearPopenContents(); |
| addPopenContents(kIPv6TetherCounters); |
| ASSERT_EQ(-1, mBw.getTetherStats(&cli, filter, err)); |
| expectNoSocketClientResponse(socketPair[1]); |
| clearPopenContents(); |
| } |
