Neda Topoljanac | 19f2916 | 2018-10-22 18:12:16 +0100 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (C) 2018 The Android Open Source Project |
| 3 | * |
| 4 | * Licensed under the Apache License, Version 2.0 (the "License"); |
| 5 | * you may not use this file except in compliance with the License. |
| 6 | * You may obtain a copy of the License at |
| 7 | * |
| 8 | * http://www.apache.org/licenses/LICENSE-2.0 |
| 9 | * |
| 10 | * Unless required by applicable law or agreed to in writing, software |
| 11 | * distributed under the License is distributed on an "AS IS" BASIS, |
| 12 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| 13 | * See the License for the specific language governing permissions and |
| 14 | * limitations under the License. |
| 15 | */ |
| 16 | |
| 17 | package com.android.server.devicepolicy; |
| 18 | |
Alex Kershaw | 97d0e8f | 2019-02-11 14:58:46 +0000 | [diff] [blame] | 19 | import android.app.admin.DevicePolicyManager.InstallSystemUpdateCallback; |
Neda Topoljanac | 19f2916 | 2018-10-22 18:12:16 +0100 | [diff] [blame] | 20 | import android.app.admin.StartInstallingUpdateCallback; |
| 21 | import android.content.Context; |
| 22 | import android.os.ParcelFileDescriptor; |
| 23 | import android.os.UpdateEngine; |
| 24 | import android.os.UpdateEngineCallback; |
| 25 | import android.util.Log; |
| 26 | |
| 27 | import java.io.BufferedReader; |
| 28 | import java.io.IOException; |
| 29 | import java.io.InputStreamReader; |
| 30 | import java.nio.file.Paths; |
| 31 | import java.util.ArrayList; |
| 32 | import java.util.Enumeration; |
| 33 | import java.util.HashMap; |
| 34 | import java.util.List; |
| 35 | import java.util.Map; |
| 36 | import java.util.zip.ZipEntry; |
| 37 | import java.util.zip.ZipException; |
| 38 | import java.util.zip.ZipFile; |
| 39 | |
| 40 | /** |
| 41 | * Used for installing an update on <a href="https://source.android.com/devices/tech/ota/ab">AB |
| 42 | * devices.</a> |
| 43 | * <p>This logic is specific to GOTA and should be modified by OEMs using a different AB update |
| 44 | * system.</p> |
| 45 | */ |
| 46 | class AbUpdateInstaller extends UpdateInstaller { |
| 47 | private static final String PAYLOAD_BIN = "payload.bin"; |
| 48 | private static final String PAYLOAD_PROPERTIES_TXT = "payload_properties.txt"; |
| 49 | //https://en.wikipedia.org/wiki/Zip_(file_format)#Local_file_header |
| 50 | private static final int OFFSET_TO_FILE_NAME = 30; |
| 51 | // kDownloadStateInitializationError constant from system/update_engine/common/error_code.h. |
| 52 | private static final int DOWNLOAD_STATE_INITIALIZATION_ERROR = 20; |
| 53 | private long mSizeForUpdate; |
| 54 | private long mOffsetForUpdate; |
| 55 | private List<String> mProperties; |
| 56 | private Enumeration<? extends ZipEntry> mEntries; |
| 57 | private ZipFile mPackedUpdateFile; |
| 58 | private static final Map<Integer, Integer> errorCodesMap = buildErrorCodesMap(); |
| 59 | private static final Map<Integer, String> errorStringsMap = buildErrorStringsMap(); |
| 60 | public static final String UNKNOWN_ERROR = "Unknown error with error code = "; |
| 61 | private boolean mUpdateInstalled; |
| 62 | |
| 63 | private static Map<Integer, Integer> buildErrorCodesMap() { |
| 64 | Map<Integer, Integer> map = new HashMap<>(); |
Alex Kershaw | 97d0e8f | 2019-02-11 14:58:46 +0000 | [diff] [blame] | 65 | map.put( |
| 66 | UpdateEngine.ErrorCodeConstants.ERROR, |
| 67 | InstallSystemUpdateCallback.UPDATE_ERROR_UNKNOWN); |
Neda Topoljanac | 19f2916 | 2018-10-22 18:12:16 +0100 | [diff] [blame] | 68 | map.put( |
| 69 | DOWNLOAD_STATE_INITIALIZATION_ERROR, |
Alex Kershaw | 97d0e8f | 2019-02-11 14:58:46 +0000 | [diff] [blame] | 70 | InstallSystemUpdateCallback.UPDATE_ERROR_INCORRECT_OS_VERSION); |
Alex Kershaw | 7bcb2fa | 2019-01-04 15:17:39 +0000 | [diff] [blame] | 71 | map.put( |
| 72 | UpdateEngine.ErrorCodeConstants.PAYLOAD_TIMESTAMP_ERROR, |
Alex Kershaw | 97d0e8f | 2019-02-11 14:58:46 +0000 | [diff] [blame] | 73 | InstallSystemUpdateCallback.UPDATE_ERROR_INCORRECT_OS_VERSION); |
Neda Topoljanac | 19f2916 | 2018-10-22 18:12:16 +0100 | [diff] [blame] | 74 | |
| 75 | // Error constants corresponding to errors related to bad update file. |
| 76 | map.put( |
| 77 | UpdateEngine.ErrorCodeConstants.DOWNLOAD_PAYLOAD_VERIFICATION_ERROR, |
Alex Kershaw | 97d0e8f | 2019-02-11 14:58:46 +0000 | [diff] [blame] | 78 | InstallSystemUpdateCallback.UPDATE_ERROR_UPDATE_FILE_INVALID); |
Neda Topoljanac | 19f2916 | 2018-10-22 18:12:16 +0100 | [diff] [blame] | 79 | map.put( |
| 80 | UpdateEngine.ErrorCodeConstants.PAYLOAD_SIZE_MISMATCH_ERROR, |
Alex Kershaw | 97d0e8f | 2019-02-11 14:58:46 +0000 | [diff] [blame] | 81 | InstallSystemUpdateCallback.UPDATE_ERROR_UPDATE_FILE_INVALID); |
Neda Topoljanac | 19f2916 | 2018-10-22 18:12:16 +0100 | [diff] [blame] | 82 | map.put( |
| 83 | UpdateEngine.ErrorCodeConstants.PAYLOAD_MISMATCHED_TYPE_ERROR, |
Alex Kershaw | 97d0e8f | 2019-02-11 14:58:46 +0000 | [diff] [blame] | 84 | InstallSystemUpdateCallback.UPDATE_ERROR_UPDATE_FILE_INVALID); |
Neda Topoljanac | 19f2916 | 2018-10-22 18:12:16 +0100 | [diff] [blame] | 85 | map.put( |
| 86 | UpdateEngine.ErrorCodeConstants.PAYLOAD_HASH_MISMATCH_ERROR, |
Alex Kershaw | 97d0e8f | 2019-02-11 14:58:46 +0000 | [diff] [blame] | 87 | InstallSystemUpdateCallback.UPDATE_ERROR_UPDATE_FILE_INVALID); |
Neda Topoljanac | 19f2916 | 2018-10-22 18:12:16 +0100 | [diff] [blame] | 88 | |
| 89 | // Error constants corresponding to errors related to devices bad state. |
| 90 | map.put( |
| 91 | UpdateEngine.ErrorCodeConstants.POST_INSTALL_RUNNER_ERROR, |
Alex Kershaw | 97d0e8f | 2019-02-11 14:58:46 +0000 | [diff] [blame] | 92 | InstallSystemUpdateCallback.UPDATE_ERROR_UNKNOWN); |
Neda Topoljanac | 19f2916 | 2018-10-22 18:12:16 +0100 | [diff] [blame] | 93 | map.put( |
| 94 | UpdateEngine.ErrorCodeConstants.INSTALL_DEVICE_OPEN_ERROR, |
Alex Kershaw | 97d0e8f | 2019-02-11 14:58:46 +0000 | [diff] [blame] | 95 | InstallSystemUpdateCallback.UPDATE_ERROR_UNKNOWN); |
Neda Topoljanac | 19f2916 | 2018-10-22 18:12:16 +0100 | [diff] [blame] | 96 | map.put( |
| 97 | UpdateEngine.ErrorCodeConstants.DOWNLOAD_TRANSFER_ERROR, |
Alex Kershaw | 97d0e8f | 2019-02-11 14:58:46 +0000 | [diff] [blame] | 98 | InstallSystemUpdateCallback.UPDATE_ERROR_UNKNOWN); |
Neda Topoljanac | 19f2916 | 2018-10-22 18:12:16 +0100 | [diff] [blame] | 99 | map.put( |
| 100 | UpdateEngine.ErrorCodeConstants.UPDATED_BUT_NOT_ACTIVE, |
Alex Kershaw | 97d0e8f | 2019-02-11 14:58:46 +0000 | [diff] [blame] | 101 | InstallSystemUpdateCallback.UPDATE_ERROR_UNKNOWN); |
Neda Topoljanac | 19f2916 | 2018-10-22 18:12:16 +0100 | [diff] [blame] | 102 | |
| 103 | return map; |
| 104 | } |
| 105 | |
| 106 | private static Map<Integer, String> buildErrorStringsMap() { |
| 107 | Map<Integer, String> map = new HashMap<>(); |
| 108 | map.put(UpdateEngine.ErrorCodeConstants.ERROR, UNKNOWN_ERROR); |
| 109 | map.put( |
| 110 | DOWNLOAD_STATE_INITIALIZATION_ERROR, |
| 111 | "The delta update payload was targeted for another version or the source partition" |
| 112 | + "was modified after it was installed"); |
| 113 | map.put( |
| 114 | UpdateEngine.ErrorCodeConstants.POST_INSTALL_RUNNER_ERROR, |
| 115 | "Failed to finish the configured postinstall works."); |
| 116 | map.put( |
| 117 | UpdateEngine.ErrorCodeConstants.INSTALL_DEVICE_OPEN_ERROR, |
| 118 | "Failed to open one of the partitions it tried to write to or read data from."); |
| 119 | map.put( |
| 120 | UpdateEngine.ErrorCodeConstants.PAYLOAD_MISMATCHED_TYPE_ERROR, |
| 121 | "Payload mismatch error."); |
| 122 | map.put( |
| 123 | UpdateEngine.ErrorCodeConstants.DOWNLOAD_TRANSFER_ERROR, |
| 124 | "Failed to read the payload data from the given URL."); |
| 125 | map.put( |
| 126 | UpdateEngine.ErrorCodeConstants.PAYLOAD_HASH_MISMATCH_ERROR, "Payload hash error."); |
| 127 | map.put( |
| 128 | UpdateEngine.ErrorCodeConstants.PAYLOAD_SIZE_MISMATCH_ERROR, |
| 129 | "Payload size mismatch error."); |
| 130 | map.put( |
| 131 | UpdateEngine.ErrorCodeConstants.DOWNLOAD_PAYLOAD_VERIFICATION_ERROR, |
| 132 | "Failed to verify the signature of the payload."); |
| 133 | map.put( |
| 134 | UpdateEngine.ErrorCodeConstants.UPDATED_BUT_NOT_ACTIVE, |
| 135 | "The payload has been successfully installed," |
| 136 | + "but the active slot was not flipped."); |
| 137 | return map; |
| 138 | } |
| 139 | |
| 140 | AbUpdateInstaller(Context context, ParcelFileDescriptor updateFileDescriptor, |
| 141 | StartInstallingUpdateCallback callback, DevicePolicyManagerService.Injector injector, |
| 142 | DevicePolicyConstants constants) { |
| 143 | super(context, updateFileDescriptor, callback, injector, constants); |
| 144 | mUpdateInstalled = false; |
| 145 | } |
| 146 | |
| 147 | @Override |
| 148 | public void installUpdateInThread() { |
| 149 | if (mUpdateInstalled) { |
| 150 | throw new IllegalStateException("installUpdateInThread can be called only once."); |
| 151 | } |
| 152 | try { |
| 153 | setState(); |
| 154 | applyPayload(Paths.get(mCopiedUpdateFile.getAbsolutePath()).toUri().toString()); |
| 155 | } catch (ZipException e) { |
| 156 | Log.w(UpdateInstaller.TAG, e); |
| 157 | notifyCallbackOnError( |
Alex Kershaw | 97d0e8f | 2019-02-11 14:58:46 +0000 | [diff] [blame] | 158 | InstallSystemUpdateCallback.UPDATE_ERROR_UPDATE_FILE_INVALID, |
Neda Topoljanac | 19f2916 | 2018-10-22 18:12:16 +0100 | [diff] [blame] | 159 | Log.getStackTraceString(e)); |
| 160 | } catch (IOException e) { |
| 161 | Log.w(UpdateInstaller.TAG, e); |
| 162 | notifyCallbackOnError( |
Alex Kershaw | 97d0e8f | 2019-02-11 14:58:46 +0000 | [diff] [blame] | 163 | InstallSystemUpdateCallback.UPDATE_ERROR_UNKNOWN, |
| 164 | Log.getStackTraceString(e)); |
Neda Topoljanac | 19f2916 | 2018-10-22 18:12:16 +0100 | [diff] [blame] | 165 | } |
| 166 | } |
| 167 | |
| 168 | private void setState() throws IOException { |
| 169 | mUpdateInstalled = true; |
| 170 | mPackedUpdateFile = new ZipFile(mCopiedUpdateFile); |
| 171 | mProperties = new ArrayList<>(); |
| 172 | mSizeForUpdate = -1; |
| 173 | mOffsetForUpdate = 0; |
| 174 | mEntries = mPackedUpdateFile.entries(); |
| 175 | } |
| 176 | |
| 177 | private UpdateEngine buildBoundUpdateEngine() { |
| 178 | UpdateEngine updateEngine = new UpdateEngine(); |
| 179 | updateEngine.bind(new DelegatingUpdateEngineCallback(this, updateEngine)); |
| 180 | return updateEngine; |
| 181 | } |
| 182 | |
| 183 | private void applyPayload(String updatePath) throws IOException { |
| 184 | if (!updateStateForPayload()) { |
| 185 | return; |
| 186 | } |
| 187 | String[] headerKeyValuePairs = mProperties.stream().toArray(String[]::new); |
| 188 | if (mSizeForUpdate == -1) { |
| 189 | Log.w(UpdateInstaller.TAG, "Failed to find payload entry in the given package."); |
| 190 | notifyCallbackOnError( |
Alex Kershaw | 97d0e8f | 2019-02-11 14:58:46 +0000 | [diff] [blame] | 191 | InstallSystemUpdateCallback.UPDATE_ERROR_UPDATE_FILE_INVALID, |
Neda Topoljanac | 19f2916 | 2018-10-22 18:12:16 +0100 | [diff] [blame] | 192 | "Failed to find payload entry in the given package."); |
| 193 | return; |
| 194 | } |
| 195 | |
| 196 | UpdateEngine updateEngine = buildBoundUpdateEngine(); |
| 197 | updateEngine.applyPayload( |
| 198 | updatePath, mOffsetForUpdate, mSizeForUpdate, headerKeyValuePairs); |
| 199 | } |
| 200 | |
| 201 | private boolean updateStateForPayload() throws IOException { |
| 202 | long offset = 0; |
| 203 | while (mEntries.hasMoreElements()) { |
| 204 | ZipEntry entry = mEntries.nextElement(); |
| 205 | |
| 206 | String name = entry.getName(); |
| 207 | offset += buildOffsetForEntry(entry, name); |
| 208 | if (entry.isDirectory()) { |
| 209 | offset -= entry.getCompressedSize(); |
| 210 | continue; |
| 211 | } |
| 212 | if (PAYLOAD_BIN.equals(name)) { |
| 213 | if (entry.getMethod() != ZipEntry.STORED) { |
| 214 | Log.w(UpdateInstaller.TAG, "Invalid compression method."); |
| 215 | notifyCallbackOnError( |
Alex Kershaw | 97d0e8f | 2019-02-11 14:58:46 +0000 | [diff] [blame] | 216 | InstallSystemUpdateCallback.UPDATE_ERROR_UPDATE_FILE_INVALID, |
Neda Topoljanac | 19f2916 | 2018-10-22 18:12:16 +0100 | [diff] [blame] | 217 | "Invalid compression method."); |
| 218 | return false; |
| 219 | } |
| 220 | mSizeForUpdate = entry.getCompressedSize(); |
| 221 | mOffsetForUpdate = offset - entry.getCompressedSize(); |
| 222 | } else if (PAYLOAD_PROPERTIES_TXT.equals(name)) { |
| 223 | updatePropertiesForEntry(entry); |
| 224 | } |
| 225 | } |
| 226 | return true; |
| 227 | } |
| 228 | |
| 229 | private long buildOffsetForEntry(ZipEntry entry, String name) { |
| 230 | return OFFSET_TO_FILE_NAME + name.length() + entry.getCompressedSize() |
| 231 | + (entry.getExtra() == null ? 0 : entry.getExtra().length); |
| 232 | } |
| 233 | |
| 234 | private void updatePropertiesForEntry(ZipEntry entry) throws IOException { |
| 235 | try (BufferedReader bufferedReader = new BufferedReader( |
| 236 | new InputStreamReader(mPackedUpdateFile.getInputStream(entry)))) { |
| 237 | String line; |
| 238 | /* Neither @line nor @mProperties are size constraint since there is a few properties |
| 239 | with limited size. */ |
| 240 | while ((line = bufferedReader.readLine()) != null) { |
| 241 | mProperties.add(line); |
| 242 | } |
| 243 | } |
| 244 | } |
| 245 | |
| 246 | private static class DelegatingUpdateEngineCallback extends UpdateEngineCallback { |
| 247 | private UpdateInstaller mUpdateInstaller; |
| 248 | private UpdateEngine mUpdateEngine; |
| 249 | |
| 250 | DelegatingUpdateEngineCallback( |
| 251 | UpdateInstaller updateInstaller, UpdateEngine updateEngine) { |
| 252 | mUpdateInstaller = updateInstaller; |
| 253 | mUpdateEngine = updateEngine; |
| 254 | } |
| 255 | |
| 256 | @Override |
| 257 | public void onStatusUpdate(int statusCode, float percentage) { |
| 258 | return; |
| 259 | } |
| 260 | |
| 261 | @Override |
| 262 | public void onPayloadApplicationComplete(int errorCode) { |
| 263 | mUpdateEngine.unbind(); |
| 264 | if (errorCode == UpdateEngine.ErrorCodeConstants.SUCCESS) { |
| 265 | mUpdateInstaller.notifyCallbackOnSuccess(); |
| 266 | } else { |
| 267 | mUpdateInstaller.notifyCallbackOnError( |
| 268 | errorCodesMap.getOrDefault( |
Alex Kershaw | 97d0e8f | 2019-02-11 14:58:46 +0000 | [diff] [blame] | 269 | errorCode, InstallSystemUpdateCallback.UPDATE_ERROR_UNKNOWN), |
Neda Topoljanac | 19f2916 | 2018-10-22 18:12:16 +0100 | [diff] [blame] | 270 | errorStringsMap.getOrDefault(errorCode, UNKNOWN_ERROR + errorCode)); |
| 271 | } |
| 272 | } |
| 273 | } |
| 274 | } |