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/*
* Copyright (C) 2021 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.
*/
package com.android.updatablesystemfont;
import static com.google.common.truth.Truth.assertThat;
import static com.google.common.truth.Truth.assertWithMessage;
import android.platform.test.annotations.RootPermissionTest;
import com.android.fsverity.AddFsVerityCertRule;
import com.android.tradefed.device.DeviceNotAvailableException;
import com.android.tradefed.log.LogUtil.CLog;
import com.android.tradefed.testtype.DeviceJUnit4ClassRunner;
import com.android.tradefed.testtype.junit4.BaseHostJUnit4Test;
import com.android.tradefed.util.CommandResult;
import com.android.tradefed.util.CommandStatus;
import org.junit.After;
import org.junit.Before;
import org.junit.Rule;
import org.junit.Test;
import org.junit.runner.RunWith;
import java.util.concurrent.TimeUnit;
import java.util.function.Supplier;
import java.util.regex.Matcher;
import java.util.regex.Pattern;
/**
* Tests if fonts can be updated by 'cmd font'.
*/
@RootPermissionTest
@RunWith(DeviceJUnit4ClassRunner.class)
public class UpdatableSystemFontTest extends BaseHostJUnit4Test {
private static final String CERT_PATH = "/data/local/tmp/UpdatableSystemFontTestCert.der";
private static final Pattern PATTERN_FONT = Pattern.compile("path = ([^, \n]*)");
private static final String NOTO_COLOR_EMOJI_TTF = "NotoColorEmoji.ttf";
private static final String TEST_NOTO_COLOR_EMOJI_V1_TTF =
"/data/local/tmp/UpdatableSystemFontTestNotoColorEmojiV1.ttf";
private static final String TEST_NOTO_COLOR_EMOJI_V1_TTF_FSV_SIG =
"/data/local/tmp/UpdatableSystemFontTestNotoColorEmojiV1.ttf.fsv_sig";
private static final String TEST_NOTO_COLOR_EMOJI_V2_TTF =
"/data/local/tmp/UpdatableSystemFontTestNotoColorEmojiV2.ttf";
private static final String TEST_NOTO_COLOR_EMOJI_V2_TTF_FSV_SIG =
"/data/local/tmp/UpdatableSystemFontTestNotoColorEmojiV2.ttf.fsv_sig";
private static final String ORIGINAL_NOTO_COLOR_EMOJI_TTF =
"/data/local/tmp/NotoColorEmoji.ttf";
private static final String ORIGINAL_NOTO_COLOR_EMOJI_TTF_FSV_SIG =
"/data/local/tmp/UpdatableSystemFontTestNotoColorEmoji.ttf.fsv_sig";
@Rule
public final AddFsVerityCertRule mAddFsverityCertRule =
new AddFsVerityCertRule(this, CERT_PATH);
@Before
public void setUp() throws Exception {
expectRemoteCommandToSucceed("cmd font clear");
}
@After
public void tearDown() throws Exception {
expectRemoteCommandToSucceed("cmd font clear");
}
@Test
public void updateFont() throws Exception {
expectRemoteCommandToSucceed(String.format("cmd font update %s %s",
TEST_NOTO_COLOR_EMOJI_V1_TTF, TEST_NOTO_COLOR_EMOJI_V1_TTF_FSV_SIG));
String fontPath = getFontPath(NOTO_COLOR_EMOJI_TTF);
assertThat(fontPath).startsWith("/data/fonts/files/");
}
@Test
public void updateFont_twice() throws Exception {
expectRemoteCommandToSucceed(String.format("cmd font update %s %s",
TEST_NOTO_COLOR_EMOJI_V1_TTF, TEST_NOTO_COLOR_EMOJI_V1_TTF_FSV_SIG));
String fontPath = getFontPath(NOTO_COLOR_EMOJI_TTF);
expectRemoteCommandToSucceed(String.format("cmd font update %s %s",
TEST_NOTO_COLOR_EMOJI_V2_TTF, TEST_NOTO_COLOR_EMOJI_V2_TTF_FSV_SIG));
String fontPath2 = getFontPath(NOTO_COLOR_EMOJI_TTF);
assertThat(fontPath2).startsWith("/data/fonts/files/");
assertThat(fontPath2).isNotEqualTo(fontPath);
}
@Test
public void updatedFont_dataFileIsImmutableAndReadable() throws Exception {
expectRemoteCommandToSucceed(String.format("cmd font update %s %s",
TEST_NOTO_COLOR_EMOJI_V1_TTF, TEST_NOTO_COLOR_EMOJI_V1_TTF_FSV_SIG));
String fontPath = getFontPath(NOTO_COLOR_EMOJI_TTF);
assertThat(fontPath).startsWith("/data");
expectRemoteCommandToFail("echo -n '' >> " + fontPath);
expectRemoteCommandToSucceed("cat " + fontPath + " > /dev/null");
}
@Test
public void updateFont_invalidCert() throws Exception {
expectRemoteCommandToFail(String.format("cmd font update %s %s",
TEST_NOTO_COLOR_EMOJI_V1_TTF, TEST_NOTO_COLOR_EMOJI_V2_TTF_FSV_SIG));
}
@Test
public void updateFont_downgradeFromSystem() throws Exception {
expectRemoteCommandToFail(String.format("cmd font update %s %s",
ORIGINAL_NOTO_COLOR_EMOJI_TTF, ORIGINAL_NOTO_COLOR_EMOJI_TTF_FSV_SIG));
}
@Test
public void updateFont_downgradeFromData() throws Exception {
expectRemoteCommandToSucceed(String.format("cmd font update %s %s",
TEST_NOTO_COLOR_EMOJI_V2_TTF, TEST_NOTO_COLOR_EMOJI_V2_TTF_FSV_SIG));
expectRemoteCommandToFail(String.format("cmd font update %s %s",
TEST_NOTO_COLOR_EMOJI_V1_TTF, TEST_NOTO_COLOR_EMOJI_V1_TTF_FSV_SIG));
}
@Test
public void reboot() throws Exception {
expectRemoteCommandToSucceed(String.format("cmd font update %s %s",
TEST_NOTO_COLOR_EMOJI_V1_TTF, TEST_NOTO_COLOR_EMOJI_V1_TTF_FSV_SIG));
String fontPath = getFontPath(NOTO_COLOR_EMOJI_TTF);
assertThat(fontPath).startsWith("/data/fonts/files/");
expectRemoteCommandToSucceed("stop");
expectRemoteCommandToSucceed("start");
waitUntilFontCommandIsReady();
String fontPathAfterReboot = getFontPath(NOTO_COLOR_EMOJI_TTF);
assertThat(fontPathAfterReboot).isEqualTo(fontPath);
}
private String getFontPath(String fontFileName) throws Exception {
// TODO: add a dedicated command for testing.
String lines = expectRemoteCommandToSucceed("cmd font dump");
for (String line : lines.split("\n")) {
Matcher m = PATTERN_FONT.matcher(line);
if (m.find() && m.group(1).endsWith(fontFileName)) {
return m.group(1);
}
}
CLog.e("Font not found: " + fontFileName);
return null;
}
private String expectRemoteCommandToSucceed(String cmd) throws Exception {
CommandResult result = getDevice().executeShellV2Command(cmd);
assertWithMessage("`" + cmd + "` failed: " + result.getStderr())
.that(result.getStatus())
.isEqualTo(CommandStatus.SUCCESS);
return result.getStdout();
}
private void expectRemoteCommandToFail(String cmd) throws Exception {
CommandResult result = getDevice().executeShellV2Command(cmd);
assertWithMessage("Unexpected success from `" + cmd + "`: " + result.getStderr())
.that(result.getStatus())
.isNotEqualTo(CommandStatus.SUCCESS);
}
private void waitUntilFontCommandIsReady() {
waitUntil(TimeUnit.SECONDS.toMillis(30), () -> {
try {
return getDevice().executeShellV2Command("cmd font status").getStatus()
== CommandStatus.SUCCESS;
} catch (DeviceNotAvailableException e) {
return false;
}
});
}
private void waitUntilSystemServerIsGone() {
waitUntil(TimeUnit.SECONDS.toMillis(30), () -> {
try {
return getDevice().executeShellV2Command("pid system_server").getStatus()
== CommandStatus.FAILED;
} catch (DeviceNotAvailableException e) {
return false;
}
});
}
private void waitUntil(long timeoutMillis, Supplier<Boolean> func) {
long untilMillis = System.currentTimeMillis() + timeoutMillis;
do {
if (func.get()) return;
try {
Thread.sleep(100);
} catch (InterruptedException e) {
throw new AssertionError("Interrupted", e);
}
} while (System.currentTimeMillis() < untilMillis);
throw new AssertionError("Timed out");
}
}
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