Doug Zongker | 1af33d0 | 2010-01-05 11:28:55 -0800 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (C) 2010 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 android.os; |
| 18 | |
Tao Bao | e8a403d | 2015-12-31 07:44:55 -0800 | [diff] [blame] | 19 | import android.annotation.SystemApi; |
Jason parks | 4ca74dc | 2011-03-14 15:23:31 -0500 | [diff] [blame] | 20 | import android.content.BroadcastReceiver; |
| 21 | import android.content.Context; |
| 22 | import android.content.Intent; |
Julia Reynolds | fe05380 | 2014-06-30 11:41:32 -0400 | [diff] [blame] | 23 | import android.os.UserManager; |
Jeff Sharkey | 004a4b2 | 2014-09-24 11:45:24 -0700 | [diff] [blame] | 24 | import android.text.TextUtils; |
Jason parks | 4ca74dc | 2011-03-14 15:23:31 -0500 | [diff] [blame] | 25 | import android.util.Log; |
| 26 | |
Doug Zongker | 1af33d0 | 2010-01-05 11:28:55 -0800 | [diff] [blame] | 27 | import java.io.ByteArrayInputStream; |
| 28 | import java.io.File; |
| 29 | import java.io.FileNotFoundException; |
| 30 | import java.io.FileWriter; |
| 31 | import java.io.IOException; |
Doug Zongker | e2d58e9 | 2011-11-04 13:39:47 -0700 | [diff] [blame] | 32 | import java.io.InputStream; |
Doug Zongker | 1af33d0 | 2010-01-05 11:28:55 -0800 | [diff] [blame] | 33 | import java.io.RandomAccessFile; |
| 34 | import java.security.GeneralSecurityException; |
| 35 | import java.security.PublicKey; |
| 36 | import java.security.Signature; |
| 37 | import java.security.SignatureException; |
Doug Zongker | 1af33d0 | 2010-01-05 11:28:55 -0800 | [diff] [blame] | 38 | import java.security.cert.CertificateFactory; |
| 39 | import java.security.cert.X509Certificate; |
Doug Zongker | 1af33d0 | 2010-01-05 11:28:55 -0800 | [diff] [blame] | 40 | import java.util.Enumeration; |
| 41 | import java.util.HashSet; |
| 42 | import java.util.Iterator; |
| 43 | import java.util.List; |
Doug Zongker | e33b400 | 2012-08-23 09:52:14 -0700 | [diff] [blame] | 44 | import java.util.Locale; |
Doug Zongker | 1af33d0 | 2010-01-05 11:28:55 -0800 | [diff] [blame] | 45 | import java.util.zip.ZipEntry; |
| 46 | import java.util.zip.ZipFile; |
| 47 | |
Przemyslaw Szczepaniak | 9ad08ec | 2015-07-09 13:28:30 +0100 | [diff] [blame] | 48 | import sun.security.pkcs.PKCS7; |
| 49 | import sun.security.pkcs.SignerInfo; |
Doug Zongker | 1af33d0 | 2010-01-05 11:28:55 -0800 | [diff] [blame] | 50 | |
| 51 | /** |
| 52 | * RecoverySystem contains methods for interacting with the Android |
| 53 | * recovery system (the separate partition that can be used to install |
| 54 | * system updates, wipe user data, etc.) |
Doug Zongker | 1af33d0 | 2010-01-05 11:28:55 -0800 | [diff] [blame] | 55 | */ |
| 56 | public class RecoverySystem { |
| 57 | private static final String TAG = "RecoverySystem"; |
| 58 | |
| 59 | /** |
| 60 | * Default location of zip file containing public keys (X509 |
| 61 | * certs) authorized to sign OTA updates. |
| 62 | */ |
| 63 | private static final File DEFAULT_KEYSTORE = |
| 64 | new File("/system/etc/security/otacerts.zip"); |
| 65 | |
| 66 | /** Send progress to listeners no more often than this (in ms). */ |
| 67 | private static final long PUBLISH_PROGRESS_INTERVAL_MS = 500; |
| 68 | |
Tao Bao | 5065e12 | 2015-08-18 12:37:02 -0700 | [diff] [blame] | 69 | /** Used to communicate with recovery. See bootable/recovery/recovery.cpp. */ |
Tao Bao | e8a403d | 2015-12-31 07:44:55 -0800 | [diff] [blame] | 70 | private static final File RECOVERY_DIR = new File("/cache/recovery"); |
| 71 | private static final File LOG_FILE = new File(RECOVERY_DIR, "log"); |
| 72 | private static final String LAST_PREFIX = "last_"; |
| 73 | |
| 74 | /** |
| 75 | * The recovery image uses this file to identify the location (i.e. blocks) |
| 76 | * of an OTA package on the /data partition. The block map file is |
| 77 | * generated by uncrypt. |
| 78 | * |
| 79 | * @hide |
| 80 | */ |
| 81 | public static final File BLOCK_MAP_FILE = new File(RECOVERY_DIR, "block.map"); |
| 82 | |
| 83 | /** |
| 84 | * UNCRYPT_PACKAGE_FILE stores the filename to be uncrypt'd, which will be |
| 85 | * read by uncrypt. |
| 86 | * |
| 87 | * @hide |
| 88 | */ |
| 89 | public static final File UNCRYPT_PACKAGE_FILE = new File(RECOVERY_DIR, "uncrypt_file"); |
Doug Zongker | 1af33d0 | 2010-01-05 11:28:55 -0800 | [diff] [blame] | 90 | |
| 91 | // Length limits for reading files. |
Tao Bao | e8a403d | 2015-12-31 07:44:55 -0800 | [diff] [blame] | 92 | private static final int LOG_FILE_MAX_LENGTH = 64 * 1024; |
| 93 | |
| 94 | // Prevent concurrent execution of requests. |
| 95 | private static final Object sRequestLock = new Object(); |
| 96 | |
| 97 | private final IRecoverySystem mService; |
Doug Zongker | 1af33d0 | 2010-01-05 11:28:55 -0800 | [diff] [blame] | 98 | |
| 99 | /** |
| 100 | * Interface definition for a callback to be invoked regularly as |
| 101 | * verification proceeds. |
| 102 | */ |
| 103 | public interface ProgressListener { |
| 104 | /** |
| 105 | * Called periodically as the verification progresses. |
| 106 | * |
| 107 | * @param progress the approximate percentage of the |
| 108 | * verification that has been completed, ranging from 0 |
| 109 | * to 100 (inclusive). |
| 110 | */ |
| 111 | public void onProgress(int progress); |
| 112 | } |
| 113 | |
| 114 | /** @return the set of certs that can be used to sign an OTA package. */ |
Kenny Root | 27e5494 | 2013-10-14 11:17:25 -0700 | [diff] [blame] | 115 | private static HashSet<X509Certificate> getTrustedCerts(File keystore) |
Doug Zongker | 1af33d0 | 2010-01-05 11:28:55 -0800 | [diff] [blame] | 116 | throws IOException, GeneralSecurityException { |
Kenny Root | 27e5494 | 2013-10-14 11:17:25 -0700 | [diff] [blame] | 117 | HashSet<X509Certificate> trusted = new HashSet<X509Certificate>(); |
Doug Zongker | 1af33d0 | 2010-01-05 11:28:55 -0800 | [diff] [blame] | 118 | if (keystore == null) { |
| 119 | keystore = DEFAULT_KEYSTORE; |
| 120 | } |
| 121 | ZipFile zip = new ZipFile(keystore); |
| 122 | try { |
| 123 | CertificateFactory cf = CertificateFactory.getInstance("X.509"); |
| 124 | Enumeration<? extends ZipEntry> entries = zip.entries(); |
| 125 | while (entries.hasMoreElements()) { |
| 126 | ZipEntry entry = entries.nextElement(); |
Doug Zongker | e2d58e9 | 2011-11-04 13:39:47 -0700 | [diff] [blame] | 127 | InputStream is = zip.getInputStream(entry); |
| 128 | try { |
Kenny Root | 27e5494 | 2013-10-14 11:17:25 -0700 | [diff] [blame] | 129 | trusted.add((X509Certificate) cf.generateCertificate(is)); |
Doug Zongker | e2d58e9 | 2011-11-04 13:39:47 -0700 | [diff] [blame] | 130 | } finally { |
| 131 | is.close(); |
| 132 | } |
Doug Zongker | 1af33d0 | 2010-01-05 11:28:55 -0800 | [diff] [blame] | 133 | } |
| 134 | } finally { |
| 135 | zip.close(); |
| 136 | } |
| 137 | return trusted; |
| 138 | } |
| 139 | |
| 140 | /** |
| 141 | * Verify the cryptographic signature of a system update package |
| 142 | * before installing it. Note that the package is also verified |
| 143 | * separately by the installer once the device is rebooted into |
| 144 | * the recovery system. This function will return only if the |
| 145 | * package was successfully verified; otherwise it will throw an |
| 146 | * exception. |
| 147 | * |
| 148 | * Verification of a package can take significant time, so this |
Doug Zongker | cb95657 | 2010-03-11 10:27:21 -0800 | [diff] [blame] | 149 | * function should not be called from a UI thread. Interrupting |
| 150 | * the thread while this function is in progress will result in a |
| 151 | * SecurityException being thrown (and the thread's interrupt flag |
| 152 | * will be cleared). |
Doug Zongker | 1af33d0 | 2010-01-05 11:28:55 -0800 | [diff] [blame] | 153 | * |
| 154 | * @param packageFile the package to be verified |
| 155 | * @param listener an object to receive periodic progress |
| 156 | * updates as verification proceeds. May be null. |
| 157 | * @param deviceCertsZipFile the zip file of certificates whose |
| 158 | * public keys we will accept. Verification succeeds if the |
| 159 | * package is signed by the private key corresponding to any |
| 160 | * public key in this file. May be null to use the system default |
| 161 | * file (currently "/system/etc/security/otacerts.zip"). |
| 162 | * |
| 163 | * @throws IOException if there were any errors reading the |
| 164 | * package or certs files. |
| 165 | * @throws GeneralSecurityException if verification failed |
| 166 | */ |
| 167 | public static void verifyPackage(File packageFile, |
| 168 | ProgressListener listener, |
| 169 | File deviceCertsZipFile) |
| 170 | throws IOException, GeneralSecurityException { |
Przemyslaw Szczepaniak | 9ad08ec | 2015-07-09 13:28:30 +0100 | [diff] [blame] | 171 | final long fileLen = packageFile.length(); |
Doug Zongker | 1af33d0 | 2010-01-05 11:28:55 -0800 | [diff] [blame] | 172 | |
Przemyslaw Szczepaniak | 9ad08ec | 2015-07-09 13:28:30 +0100 | [diff] [blame] | 173 | final RandomAccessFile raf = new RandomAccessFile(packageFile, "r"); |
Doug Zongker | 1af33d0 | 2010-01-05 11:28:55 -0800 | [diff] [blame] | 174 | try { |
Przemyslaw Szczepaniak | 9ad08ec | 2015-07-09 13:28:30 +0100 | [diff] [blame] | 175 | final long startTimeMillis = System.currentTimeMillis(); |
Doug Zongker | 1af33d0 | 2010-01-05 11:28:55 -0800 | [diff] [blame] | 176 | if (listener != null) { |
Przemyslaw Szczepaniak | 9ad08ec | 2015-07-09 13:28:30 +0100 | [diff] [blame] | 177 | listener.onProgress(0); |
Doug Zongker | 1af33d0 | 2010-01-05 11:28:55 -0800 | [diff] [blame] | 178 | } |
| 179 | |
| 180 | raf.seek(fileLen - 6); |
| 181 | byte[] footer = new byte[6]; |
| 182 | raf.readFully(footer); |
| 183 | |
| 184 | if (footer[2] != (byte)0xff || footer[3] != (byte)0xff) { |
| 185 | throw new SignatureException("no signature in file (no footer)"); |
| 186 | } |
| 187 | |
Przemyslaw Szczepaniak | 9ad08ec | 2015-07-09 13:28:30 +0100 | [diff] [blame] | 188 | final int commentSize = (footer[4] & 0xff) | ((footer[5] & 0xff) << 8); |
| 189 | final int signatureStart = (footer[0] & 0xff) | ((footer[1] & 0xff) << 8); |
Doug Zongker | 1af33d0 | 2010-01-05 11:28:55 -0800 | [diff] [blame] | 190 | |
| 191 | byte[] eocd = new byte[commentSize + 22]; |
| 192 | raf.seek(fileLen - (commentSize + 22)); |
| 193 | raf.readFully(eocd); |
| 194 | |
| 195 | // Check that we have found the start of the |
| 196 | // end-of-central-directory record. |
| 197 | if (eocd[0] != (byte)0x50 || eocd[1] != (byte)0x4b || |
| 198 | eocd[2] != (byte)0x05 || eocd[3] != (byte)0x06) { |
| 199 | throw new SignatureException("no signature in file (bad footer)"); |
| 200 | } |
| 201 | |
| 202 | for (int i = 4; i < eocd.length-3; ++i) { |
| 203 | if (eocd[i ] == (byte)0x50 && eocd[i+1] == (byte)0x4b && |
| 204 | eocd[i+2] == (byte)0x05 && eocd[i+3] == (byte)0x06) { |
| 205 | throw new SignatureException("EOCD marker found after start of EOCD"); |
| 206 | } |
| 207 | } |
| 208 | |
Przemyslaw Szczepaniak | 9ad08ec | 2015-07-09 13:28:30 +0100 | [diff] [blame] | 209 | // Parse the signature |
| 210 | PKCS7 block = |
| 211 | new PKCS7(new ByteArrayInputStream(eocd, commentSize+22-signatureStart, signatureStart)); |
Doug Zongker | 1af33d0 | 2010-01-05 11:28:55 -0800 | [diff] [blame] | 212 | |
Doug Zongker | 1af33d0 | 2010-01-05 11:28:55 -0800 | [diff] [blame] | 213 | // Take the first certificate from the signature (packages |
| 214 | // should contain only one). |
Przemyslaw Szczepaniak | 9ad08ec | 2015-07-09 13:28:30 +0100 | [diff] [blame] | 215 | X509Certificate[] certificates = block.getCertificates(); |
| 216 | if (certificates == null || certificates.length == 0) { |
Doug Zongker | 1af33d0 | 2010-01-05 11:28:55 -0800 | [diff] [blame] | 217 | throw new SignatureException("signature contains no certificates"); |
| 218 | } |
Przemyslaw Szczepaniak | 9ad08ec | 2015-07-09 13:28:30 +0100 | [diff] [blame] | 219 | X509Certificate cert = certificates[0]; |
| 220 | PublicKey signatureKey = cert.getPublicKey(); |
Doug Zongker | 1af33d0 | 2010-01-05 11:28:55 -0800 | [diff] [blame] | 221 | |
Przemyslaw Szczepaniak | 9ad08ec | 2015-07-09 13:28:30 +0100 | [diff] [blame] | 222 | SignerInfo[] signerInfos = block.getSignerInfos(); |
| 223 | if (signerInfos == null || signerInfos.length == 0) { |
| 224 | throw new SignatureException("signature contains no signedData"); |
Doug Zongker | 1af33d0 | 2010-01-05 11:28:55 -0800 | [diff] [blame] | 225 | } |
Przemyslaw Szczepaniak | 9ad08ec | 2015-07-09 13:28:30 +0100 | [diff] [blame] | 226 | SignerInfo signerInfo = signerInfos[0]; |
Doug Zongker | 1af33d0 | 2010-01-05 11:28:55 -0800 | [diff] [blame] | 227 | |
| 228 | // Check that the public key of the certificate contained |
| 229 | // in the package equals one of our trusted public keys. |
Przemyslaw Szczepaniak | 9ad08ec | 2015-07-09 13:28:30 +0100 | [diff] [blame] | 230 | boolean verified = false; |
Kenny Root | 27e5494 | 2013-10-14 11:17:25 -0700 | [diff] [blame] | 231 | HashSet<X509Certificate> trusted = getTrustedCerts( |
Doug Zongker | 1af33d0 | 2010-01-05 11:28:55 -0800 | [diff] [blame] | 232 | deviceCertsZipFile == null ? DEFAULT_KEYSTORE : deviceCertsZipFile); |
Kenny Root | 27e5494 | 2013-10-14 11:17:25 -0700 | [diff] [blame] | 233 | for (X509Certificate c : trusted) { |
Doug Zongker | 1af33d0 | 2010-01-05 11:28:55 -0800 | [diff] [blame] | 234 | if (c.getPublicKey().equals(signatureKey)) { |
| 235 | verified = true; |
| 236 | break; |
| 237 | } |
| 238 | } |
| 239 | if (!verified) { |
| 240 | throw new SignatureException("signature doesn't match any trusted key"); |
| 241 | } |
| 242 | |
| 243 | // The signature cert matches a trusted key. Now verify that |
| 244 | // the digest in the cert matches the actual file data. |
Doug Zongker | 1af33d0 | 2010-01-05 11:28:55 -0800 | [diff] [blame] | 245 | raf.seek(0); |
Przemyslaw Szczepaniak | 9ad08ec | 2015-07-09 13:28:30 +0100 | [diff] [blame] | 246 | final ProgressListener listenerForInner = listener; |
| 247 | SignerInfo verifyResult = block.verify(signerInfo, new InputStream() { |
| 248 | // The signature covers all of the OTA package except the |
| 249 | // archive comment and its 2-byte length. |
| 250 | long toRead = fileLen - commentSize - 2; |
| 251 | long soFar = 0; |
Doug Zongker | 1af33d0 | 2010-01-05 11:28:55 -0800 | [diff] [blame] | 252 | |
Przemyslaw Szczepaniak | 9ad08ec | 2015-07-09 13:28:30 +0100 | [diff] [blame] | 253 | int lastPercent = 0; |
| 254 | long lastPublishTime = startTimeMillis; |
| 255 | |
| 256 | @Override |
| 257 | public int read() throws IOException { |
| 258 | throw new UnsupportedOperationException(); |
Doug Zongker | 1af33d0 | 2010-01-05 11:28:55 -0800 | [diff] [blame] | 259 | } |
Przemyslaw Szczepaniak | 9ad08ec | 2015-07-09 13:28:30 +0100 | [diff] [blame] | 260 | |
| 261 | @Override |
| 262 | public int read(byte[] b, int off, int len) throws IOException { |
| 263 | if (soFar >= toRead) { |
| 264 | return -1; |
| 265 | } |
| 266 | if (Thread.currentThread().isInterrupted()) { |
| 267 | return -1; |
| 268 | } |
| 269 | |
| 270 | int size = len; |
| 271 | if (soFar + size > toRead) { |
| 272 | size = (int)(toRead - soFar); |
| 273 | } |
| 274 | int read = raf.read(b, off, size); |
| 275 | soFar += read; |
| 276 | |
| 277 | if (listenerForInner != null) { |
| 278 | long now = System.currentTimeMillis(); |
| 279 | int p = (int)(soFar * 100 / toRead); |
| 280 | if (p > lastPercent && |
| 281 | now - lastPublishTime > PUBLISH_PROGRESS_INTERVAL_MS) { |
| 282 | lastPercent = p; |
| 283 | lastPublishTime = now; |
| 284 | listenerForInner.onProgress(lastPercent); |
| 285 | } |
| 286 | } |
| 287 | |
| 288 | return read; |
| 289 | } |
| 290 | }); |
| 291 | |
| 292 | final boolean interrupted = Thread.interrupted(); |
Doug Zongker | 1af33d0 | 2010-01-05 11:28:55 -0800 | [diff] [blame] | 293 | if (listener != null) { |
| 294 | listener.onProgress(100); |
| 295 | } |
| 296 | |
Doug Zongker | cb95657 | 2010-03-11 10:27:21 -0800 | [diff] [blame] | 297 | if (interrupted) { |
| 298 | throw new SignatureException("verification was interrupted"); |
| 299 | } |
| 300 | |
Przemyslaw Szczepaniak | 9ad08ec | 2015-07-09 13:28:30 +0100 | [diff] [blame] | 301 | if (verifyResult == null) { |
Doug Zongker | 1af33d0 | 2010-01-05 11:28:55 -0800 | [diff] [blame] | 302 | throw new SignatureException("signature digest verification failed"); |
| 303 | } |
| 304 | } finally { |
| 305 | raf.close(); |
| 306 | } |
| 307 | } |
| 308 | |
| 309 | /** |
Tao Bao | e8a403d | 2015-12-31 07:44:55 -0800 | [diff] [blame] | 310 | * Process a given package with uncrypt. No-op if the package is not on the |
| 311 | * /data partition. |
| 312 | * |
| 313 | * @param Context the Context to use |
| 314 | * @param packageFile the package to be processed |
| 315 | * @param listener an object to receive periodic progress updates as |
| 316 | * processing proceeds. May be null. |
| 317 | * @param handler the Handler upon which the callbacks will be |
| 318 | * executed. |
| 319 | * |
| 320 | * @throws IOException if there were any errors processing the package file. |
| 321 | * |
| 322 | * @hide |
| 323 | */ |
| 324 | @SystemApi |
| 325 | public static void processPackage(Context context, |
| 326 | File packageFile, |
| 327 | final ProgressListener listener, |
| 328 | final Handler handler) |
| 329 | throws IOException { |
| 330 | String filename = packageFile.getCanonicalPath(); |
| 331 | if (!filename.startsWith("/data/")) { |
| 332 | return; |
| 333 | } |
| 334 | |
| 335 | RecoverySystem rs = (RecoverySystem) context.getSystemService(Context.RECOVERY_SERVICE); |
| 336 | IRecoverySystemProgressListener progressListener = null; |
| 337 | if (listener != null) { |
| 338 | final Handler progressHandler; |
| 339 | if (handler != null) { |
| 340 | progressHandler = handler; |
| 341 | } else { |
| 342 | progressHandler = new Handler(context.getMainLooper()); |
| 343 | } |
| 344 | progressListener = new IRecoverySystemProgressListener.Stub() { |
| 345 | int lastProgress = 0; |
| 346 | long lastPublishTime = System.currentTimeMillis(); |
| 347 | |
| 348 | @Override |
| 349 | public void onProgress(final int progress) { |
| 350 | final long now = System.currentTimeMillis(); |
| 351 | progressHandler.post(new Runnable() { |
| 352 | @Override |
| 353 | public void run() { |
| 354 | if (progress > lastProgress && |
| 355 | now - lastPublishTime > PUBLISH_PROGRESS_INTERVAL_MS) { |
| 356 | lastProgress = progress; |
| 357 | lastPublishTime = now; |
| 358 | listener.onProgress(progress); |
| 359 | } |
| 360 | } |
| 361 | }); |
| 362 | } |
| 363 | }; |
| 364 | } |
| 365 | |
| 366 | if (!rs.uncrypt(filename, progressListener)) { |
| 367 | throw new IOException("process package failed"); |
| 368 | } |
| 369 | } |
| 370 | |
| 371 | /** |
| 372 | * Process a given package with uncrypt. No-op if the package is not on the |
| 373 | * /data partition. |
| 374 | * |
| 375 | * @param Context the Context to use |
| 376 | * @param packageFile the package to be processed |
| 377 | * @param listener an object to receive periodic progress updates as |
| 378 | * processing proceeds. May be null. |
| 379 | * |
| 380 | * @throws IOException if there were any errors processing the package file. |
| 381 | * |
| 382 | * @hide |
| 383 | */ |
| 384 | @SystemApi |
| 385 | public static void processPackage(Context context, |
| 386 | File packageFile, |
| 387 | final ProgressListener listener) |
| 388 | throws IOException { |
| 389 | processPackage(context, packageFile, listener, null); |
| 390 | } |
| 391 | |
| 392 | /** |
Doug Zongker | 1af33d0 | 2010-01-05 11:28:55 -0800 | [diff] [blame] | 393 | * Reboots the device in order to install the given update |
| 394 | * package. |
Jeff Brown | 64010e8 | 2010-04-08 16:52:18 -0700 | [diff] [blame] | 395 | * Requires the {@link android.Manifest.permission#REBOOT} permission. |
Doug Zongker | 1af33d0 | 2010-01-05 11:28:55 -0800 | [diff] [blame] | 396 | * |
| 397 | * @param context the Context to use |
Doug Zongker | 4baf641 | 2010-09-20 13:09:57 -0700 | [diff] [blame] | 398 | * @param packageFile the update package to install. Must be on |
| 399 | * a partition mountable by recovery. (The set of partitions |
| 400 | * known to recovery may vary from device to device. Generally, |
| 401 | * /cache and /data are safe.) |
Doug Zongker | 1af33d0 | 2010-01-05 11:28:55 -0800 | [diff] [blame] | 402 | * |
| 403 | * @throws IOException if writing the recovery command file |
| 404 | * fails, or if the reboot itself fails. |
| 405 | */ |
| 406 | public static void installPackage(Context context, File packageFile) |
Tao Bao | e8a403d | 2015-12-31 07:44:55 -0800 | [diff] [blame] | 407 | throws IOException { |
| 408 | installPackage(context, packageFile, false); |
| 409 | } |
| 410 | |
| 411 | /** |
| 412 | * If the package hasn't been processed (i.e. uncrypt'd), set up |
| 413 | * UNCRYPT_PACKAGE_FILE and delete BLOCK_MAP_FILE to trigger uncrypt during the |
| 414 | * reboot. |
| 415 | * |
| 416 | * @param context the Context to use |
| 417 | * @param packageFile the update package to install. Must be on a |
| 418 | * partition mountable by recovery. |
| 419 | * @param processed if the package has been processed (uncrypt'd). |
| 420 | * |
| 421 | * @throws IOException if writing the recovery command file fails, or if |
| 422 | * the reboot itself fails. |
| 423 | * |
| 424 | * @hide |
| 425 | */ |
| 426 | @SystemApi |
| 427 | public static void installPackage(Context context, File packageFile, boolean processed) |
| 428 | throws IOException { |
| 429 | synchronized (sRequestLock) { |
| 430 | LOG_FILE.delete(); |
| 431 | // Must delete the file in case it was created by system server. |
| 432 | UNCRYPT_PACKAGE_FILE.delete(); |
| 433 | |
| 434 | String filename = packageFile.getCanonicalPath(); |
| 435 | Log.w(TAG, "!!! REBOOTING TO INSTALL " + filename + " !!!"); |
| 436 | |
| 437 | if (!processed && filename.startsWith("/data/")) { |
| 438 | FileWriter uncryptFile = new FileWriter(UNCRYPT_PACKAGE_FILE); |
| 439 | try { |
| 440 | uncryptFile.write(filename + "\n"); |
| 441 | } finally { |
| 442 | uncryptFile.close(); |
| 443 | } |
| 444 | // UNCRYPT_PACKAGE_FILE needs to be readable and writable by system server. |
| 445 | if (!UNCRYPT_PACKAGE_FILE.setReadable(true, false) |
| 446 | || !UNCRYPT_PACKAGE_FILE.setWritable(true, false)) { |
| 447 | Log.e(TAG, "Error setting permission for " + UNCRYPT_PACKAGE_FILE); |
| 448 | } |
| 449 | |
| 450 | BLOCK_MAP_FILE.delete(); |
| 451 | } |
| 452 | |
| 453 | // If the package is on the /data partition, use the block map file as |
| 454 | // the package name instead. |
| 455 | if (filename.startsWith("/data/")) { |
| 456 | filename = "@/cache/recovery/block.map"; |
| 457 | } |
| 458 | |
| 459 | final String filenameArg = "--update_package=" + filename + "\n"; |
| 460 | final String localeArg = "--locale=" + Locale.getDefault().toString() + "\n"; |
| 461 | final String command = filenameArg + localeArg; |
| 462 | |
| 463 | RecoverySystem rs = (RecoverySystem) context.getSystemService( |
| 464 | Context.RECOVERY_SERVICE); |
| 465 | if (!rs.setupBcb(command)) { |
| 466 | throw new IOException("Setup BCB failed"); |
| 467 | } |
| 468 | |
| 469 | // Having set up the BCB (bootloader control block), go ahead and reboot |
| 470 | PowerManager pm = (PowerManager) context.getSystemService(Context.POWER_SERVICE); |
| 471 | pm.reboot(PowerManager.REBOOT_RECOVERY_UPDATE); |
| 472 | |
| 473 | throw new IOException("Reboot failed (no permissions?)"); |
| 474 | } |
| 475 | } |
| 476 | |
| 477 | /** |
| 478 | * Schedule to install the given package on next boot. The caller needs to |
| 479 | * ensure that the package must have been processed (uncrypt'd) if needed. |
| 480 | * It sets up the command in BCB (bootloader control block), which will |
| 481 | * be read by the bootloader and the recovery image. |
| 482 | * |
| 483 | * @param Context the Context to use. |
| 484 | * @param packageFile the package to be installed. |
| 485 | * |
| 486 | * @throws IOException if there were any errors setting up the BCB. |
| 487 | * |
| 488 | * @hide |
| 489 | */ |
| 490 | @SystemApi |
| 491 | public static void scheduleUpdateOnBoot(Context context, File packageFile) |
| 492 | throws IOException { |
Doug Zongker | 1af33d0 | 2010-01-05 11:28:55 -0800 | [diff] [blame] | 493 | String filename = packageFile.getCanonicalPath(); |
Tao Bao | 90237f7 | 2015-05-21 16:25:19 -0700 | [diff] [blame] | 494 | |
Tao Bao | e8a403d | 2015-12-31 07:44:55 -0800 | [diff] [blame] | 495 | // If the package is on the /data partition, use the block map file as |
| 496 | // the package name instead. |
Tao Bao | 90237f7 | 2015-05-21 16:25:19 -0700 | [diff] [blame] | 497 | if (filename.startsWith("/data/")) { |
| 498 | filename = "@/cache/recovery/block.map"; |
| 499 | } |
| 500 | |
Tao Bao | e8a403d | 2015-12-31 07:44:55 -0800 | [diff] [blame] | 501 | final String filenameArg = "--update_package=" + filename + "\n"; |
| 502 | final String localeArg = "--locale=" + Locale.getDefault().toString() + "\n"; |
| 503 | final String command = filenameArg + localeArg; |
| 504 | |
| 505 | RecoverySystem rs = (RecoverySystem) context.getSystemService(Context.RECOVERY_SERVICE); |
| 506 | if (!rs.setupBcb(command)) { |
| 507 | throw new IOException("schedule update on boot failed"); |
| 508 | } |
| 509 | } |
| 510 | |
| 511 | /** |
| 512 | * Cancel any scheduled update by clearing up the BCB (bootloader control |
| 513 | * block). |
| 514 | * |
| 515 | * @param Context the Context to use. |
| 516 | * |
| 517 | * @throws IOException if there were any errors clearing up the BCB. |
| 518 | * |
| 519 | * @hide |
| 520 | */ |
| 521 | @SystemApi |
| 522 | public static void cancelScheduledUpdate(Context context) |
| 523 | throws IOException { |
| 524 | RecoverySystem rs = (RecoverySystem) context.getSystemService(Context.RECOVERY_SERVICE); |
| 525 | if (!rs.clearBcb()) { |
| 526 | throw new IOException("cancel scheduled update failed"); |
| 527 | } |
Doug Zongker | 1af33d0 | 2010-01-05 11:28:55 -0800 | [diff] [blame] | 528 | } |
| 529 | |
| 530 | /** |
Doug Zongker | cdf0088 | 2014-03-18 12:52:04 -0700 | [diff] [blame] | 531 | * Reboots the device and wipes the user data and cache |
| 532 | * partitions. This is sometimes called a "factory reset", which |
| 533 | * is something of a misnomer because the system partition is not |
| 534 | * restored to its factory state. Requires the |
| 535 | * {@link android.Manifest.permission#REBOOT} permission. |
Doug Zongker | 1af33d0 | 2010-01-05 11:28:55 -0800 | [diff] [blame] | 536 | * |
| 537 | * @param context the Context to use |
| 538 | * |
| 539 | * @throws IOException if writing the recovery command file |
| 540 | * fails, or if the reboot itself fails. |
Julia Reynolds | fe05380 | 2014-06-30 11:41:32 -0400 | [diff] [blame] | 541 | * @throws SecurityException if the current user is not allowed to wipe data. |
Doug Zongker | 1af33d0 | 2010-01-05 11:28:55 -0800 | [diff] [blame] | 542 | */ |
Jason parks | 4ca74dc | 2011-03-14 15:23:31 -0500 | [diff] [blame] | 543 | public static void rebootWipeUserData(Context context) throws IOException { |
Jeff Sharkey | 004a4b2 | 2014-09-24 11:45:24 -0700 | [diff] [blame] | 544 | rebootWipeUserData(context, false, context.getPackageName()); |
| 545 | } |
| 546 | |
| 547 | /** {@hide} */ |
| 548 | public static void rebootWipeUserData(Context context, String reason) throws IOException { |
| 549 | rebootWipeUserData(context, false, reason); |
| 550 | } |
| 551 | |
| 552 | /** {@hide} */ |
| 553 | public static void rebootWipeUserData(Context context, boolean shutdown) |
| 554 | throws IOException { |
| 555 | rebootWipeUserData(context, shutdown, context.getPackageName()); |
Doug Zongker | cdf0088 | 2014-03-18 12:52:04 -0700 | [diff] [blame] | 556 | } |
| 557 | |
| 558 | /** |
| 559 | * Reboots the device and wipes the user data and cache |
| 560 | * partitions. This is sometimes called a "factory reset", which |
| 561 | * is something of a misnomer because the system partition is not |
| 562 | * restored to its factory state. Requires the |
| 563 | * {@link android.Manifest.permission#REBOOT} permission. |
| 564 | * |
| 565 | * @param context the Context to use |
| 566 | * @param shutdown if true, the device will be powered down after |
| 567 | * the wipe completes, rather than being rebooted |
| 568 | * back to the regular system. |
| 569 | * |
| 570 | * @throws IOException if writing the recovery command file |
| 571 | * fails, or if the reboot itself fails. |
Julia Reynolds | fe05380 | 2014-06-30 11:41:32 -0400 | [diff] [blame] | 572 | * @throws SecurityException if the current user is not allowed to wipe data. |
Doug Zongker | cdf0088 | 2014-03-18 12:52:04 -0700 | [diff] [blame] | 573 | * |
| 574 | * @hide |
| 575 | */ |
Jeff Sharkey | 004a4b2 | 2014-09-24 11:45:24 -0700 | [diff] [blame] | 576 | public static void rebootWipeUserData(Context context, boolean shutdown, String reason) |
| 577 | throws IOException { |
Julia Reynolds | fe05380 | 2014-06-30 11:41:32 -0400 | [diff] [blame] | 578 | UserManager um = (UserManager) context.getSystemService(Context.USER_SERVICE); |
| 579 | if (um.hasUserRestriction(UserManager.DISALLOW_FACTORY_RESET)) { |
| 580 | throw new SecurityException("Wiping data is not allowed for this user."); |
| 581 | } |
Jason parks | 4ca74dc | 2011-03-14 15:23:31 -0500 | [diff] [blame] | 582 | final ConditionVariable condition = new ConditionVariable(); |
| 583 | |
| 584 | Intent intent = new Intent("android.intent.action.MASTER_CLEAR_NOTIFICATION"); |
Christopher Tate | e27ae55 | 2014-04-24 15:13:13 -0700 | [diff] [blame] | 585 | intent.addFlags(Intent.FLAG_RECEIVER_FOREGROUND); |
Xiaohui Chen | e4de5a0 | 2015-09-22 15:33:31 -0700 | [diff] [blame] | 586 | context.sendOrderedBroadcastAsUser(intent, UserHandle.SYSTEM, |
Dianne Hackborn | 5ac72a2 | 2012-08-29 18:32:08 -0700 | [diff] [blame] | 587 | android.Manifest.permission.MASTER_CLEAR, |
Jason parks | 4ca74dc | 2011-03-14 15:23:31 -0500 | [diff] [blame] | 588 | new BroadcastReceiver() { |
| 589 | @Override |
| 590 | public void onReceive(Context context, Intent intent) { |
| 591 | condition.open(); |
| 592 | } |
| 593 | }, null, 0, null, null); |
| 594 | |
| 595 | // Block until the ordered broadcast has completed. |
| 596 | condition.block(); |
| 597 | |
Jeff Sharkey | 004a4b2 | 2014-09-24 11:45:24 -0700 | [diff] [blame] | 598 | String shutdownArg = null; |
Doug Zongker | cdf0088 | 2014-03-18 12:52:04 -0700 | [diff] [blame] | 599 | if (shutdown) { |
Jeff Sharkey | 004a4b2 | 2014-09-24 11:45:24 -0700 | [diff] [blame] | 600 | shutdownArg = "--shutdown_after"; |
Doug Zongker | cdf0088 | 2014-03-18 12:52:04 -0700 | [diff] [blame] | 601 | } |
| 602 | |
Jeff Sharkey | 004a4b2 | 2014-09-24 11:45:24 -0700 | [diff] [blame] | 603 | String reasonArg = null; |
| 604 | if (!TextUtils.isEmpty(reason)) { |
| 605 | reasonArg = "--reason=" + sanitizeArg(reason); |
| 606 | } |
| 607 | |
| 608 | final String localeArg = "--locale=" + Locale.getDefault().toString(); |
| 609 | bootCommand(context, shutdownArg, "--wipe_data", reasonArg, localeArg); |
Doug Zongker | 1af33d0 | 2010-01-05 11:28:55 -0800 | [diff] [blame] | 610 | } |
| 611 | |
| 612 | /** |
Doug Zongker | 3365120 | 2011-07-19 12:45:09 -0700 | [diff] [blame] | 613 | * Reboot into the recovery system to wipe the /cache partition. |
Doug Zongker | 1af33d0 | 2010-01-05 11:28:55 -0800 | [diff] [blame] | 614 | * @throws IOException if something goes wrong. |
Doug Zongker | 1af33d0 | 2010-01-05 11:28:55 -0800 | [diff] [blame] | 615 | */ |
Doug Zongker | 3365120 | 2011-07-19 12:45:09 -0700 | [diff] [blame] | 616 | public static void rebootWipeCache(Context context) throws IOException { |
Jeff Sharkey | 004a4b2 | 2014-09-24 11:45:24 -0700 | [diff] [blame] | 617 | rebootWipeCache(context, context.getPackageName()); |
| 618 | } |
| 619 | |
| 620 | /** {@hide} */ |
| 621 | public static void rebootWipeCache(Context context, String reason) throws IOException { |
| 622 | String reasonArg = null; |
| 623 | if (!TextUtils.isEmpty(reason)) { |
| 624 | reasonArg = "--reason=" + sanitizeArg(reason); |
| 625 | } |
| 626 | |
| 627 | final String localeArg = "--locale=" + Locale.getDefault().toString(); |
| 628 | bootCommand(context, "--wipe_cache", reasonArg, localeArg); |
Doug Zongker | 1af33d0 | 2010-01-05 11:28:55 -0800 | [diff] [blame] | 629 | } |
| 630 | |
| 631 | /** |
| 632 | * Reboot into the recovery system with the supplied argument. |
Jeff Sharkey | 004a4b2 | 2014-09-24 11:45:24 -0700 | [diff] [blame] | 633 | * @param args to pass to the recovery utility. |
Doug Zongker | 1af33d0 | 2010-01-05 11:28:55 -0800 | [diff] [blame] | 634 | * @throws IOException if something goes wrong. |
| 635 | */ |
Jeff Sharkey | 004a4b2 | 2014-09-24 11:45:24 -0700 | [diff] [blame] | 636 | private static void bootCommand(Context context, String... args) throws IOException { |
Tao Bao | e8a403d | 2015-12-31 07:44:55 -0800 | [diff] [blame] | 637 | synchronized (sRequestLock) { |
| 638 | LOG_FILE.delete(); |
Doug Zongker | 1af33d0 | 2010-01-05 11:28:55 -0800 | [diff] [blame] | 639 | |
Tao Bao | e8a403d | 2015-12-31 07:44:55 -0800 | [diff] [blame] | 640 | StringBuilder command = new StringBuilder(); |
Jeff Sharkey | 004a4b2 | 2014-09-24 11:45:24 -0700 | [diff] [blame] | 641 | for (String arg : args) { |
| 642 | if (!TextUtils.isEmpty(arg)) { |
Tao Bao | e8a403d | 2015-12-31 07:44:55 -0800 | [diff] [blame] | 643 | command.append(arg); |
| 644 | command.append("\n"); |
Jeff Sharkey | 004a4b2 | 2014-09-24 11:45:24 -0700 | [diff] [blame] | 645 | } |
| 646 | } |
Tao Bao | e8a403d | 2015-12-31 07:44:55 -0800 | [diff] [blame] | 647 | |
| 648 | // Write the command into BCB (bootloader control block). |
| 649 | RecoverySystem rs = (RecoverySystem) context.getSystemService( |
| 650 | Context.RECOVERY_SERVICE); |
| 651 | rs.setupBcb(command.toString()); |
| 652 | |
| 653 | // Having set up the BCB, go ahead and reboot. |
| 654 | PowerManager pm = (PowerManager) context.getSystemService(Context.POWER_SERVICE); |
| 655 | pm.reboot(PowerManager.REBOOT_RECOVERY); |
| 656 | |
| 657 | throw new IOException("Reboot failed (no permissions?)"); |
Doug Zongker | 1af33d0 | 2010-01-05 11:28:55 -0800 | [diff] [blame] | 658 | } |
Doug Zongker | 1af33d0 | 2010-01-05 11:28:55 -0800 | [diff] [blame] | 659 | } |
| 660 | |
| 661 | /** |
| 662 | * Called after booting to process and remove recovery-related files. |
| 663 | * @return the log file from recovery, or null if none was found. |
| 664 | * |
| 665 | * @hide |
| 666 | */ |
| 667 | public static String handleAftermath() { |
| 668 | // Record the tail of the LOG_FILE |
| 669 | String log = null; |
| 670 | try { |
| 671 | log = FileUtils.readTextFile(LOG_FILE, -LOG_FILE_MAX_LENGTH, "...\n"); |
| 672 | } catch (FileNotFoundException e) { |
| 673 | Log.i(TAG, "No recovery log file"); |
| 674 | } catch (IOException e) { |
| 675 | Log.e(TAG, "Error reading recovery log", e); |
| 676 | } |
| 677 | |
Tao Bao | e8217ff | 2016-02-01 16:08:18 -0800 | [diff] [blame] | 678 | // Only remove the OTA package if it's partially processed (uncrypt'd). |
| 679 | boolean reservePackage = BLOCK_MAP_FILE.exists(); |
Tao Bao | e8a403d | 2015-12-31 07:44:55 -0800 | [diff] [blame] | 680 | if (!reservePackage && UNCRYPT_PACKAGE_FILE.exists()) { |
Tao Bao | 87212ad | 2015-10-19 14:48:36 -0700 | [diff] [blame] | 681 | String filename = null; |
| 682 | try { |
Tao Bao | e8a403d | 2015-12-31 07:44:55 -0800 | [diff] [blame] | 683 | filename = FileUtils.readTextFile(UNCRYPT_PACKAGE_FILE, 0, null); |
Tao Bao | 87212ad | 2015-10-19 14:48:36 -0700 | [diff] [blame] | 684 | } catch (IOException e) { |
| 685 | Log.e(TAG, "Error reading uncrypt file", e); |
| 686 | } |
| 687 | |
| 688 | // Remove the OTA package on /data that has been (possibly |
| 689 | // partially) processed. (Bug: 24973532) |
| 690 | if (filename != null && filename.startsWith("/data")) { |
Tao Bao | e8a403d | 2015-12-31 07:44:55 -0800 | [diff] [blame] | 691 | if (UNCRYPT_PACKAGE_FILE.delete()) { |
Tao Bao | 87212ad | 2015-10-19 14:48:36 -0700 | [diff] [blame] | 692 | Log.i(TAG, "Deleted: " + filename); |
| 693 | } else { |
| 694 | Log.e(TAG, "Can't delete: " + filename); |
| 695 | } |
| 696 | } |
| 697 | } |
| 698 | |
Tao Bao | e8217ff | 2016-02-01 16:08:18 -0800 | [diff] [blame] | 699 | // We keep the update logs (beginning with LAST_PREFIX), and optionally |
| 700 | // the block map file (BLOCK_MAP_FILE) for a package. BLOCK_MAP_FILE |
| 701 | // will be created at the end of a successful uncrypt. If seeing this |
| 702 | // file, we keep the block map file and the file that contains the |
Tao Bao | e8a403d | 2015-12-31 07:44:55 -0800 | [diff] [blame] | 703 | // package name (UNCRYPT_PACKAGE_FILE). This is to reduce the work for |
| 704 | // GmsCore to avoid re-downloading everything again. |
Doug Zongker | 1af33d0 | 2010-01-05 11:28:55 -0800 | [diff] [blame] | 705 | String[] names = RECOVERY_DIR.list(); |
| 706 | for (int i = 0; names != null && i < names.length; i++) { |
Doug Zongker | 3d5040f8 | 2011-04-12 09:23:51 -0700 | [diff] [blame] | 707 | if (names[i].startsWith(LAST_PREFIX)) continue; |
Tao Bao | e8217ff | 2016-02-01 16:08:18 -0800 | [diff] [blame] | 708 | if (reservePackage && names[i].equals(BLOCK_MAP_FILE.getName())) continue; |
Tao Bao | e8a403d | 2015-12-31 07:44:55 -0800 | [diff] [blame] | 709 | if (reservePackage && names[i].equals(UNCRYPT_PACKAGE_FILE.getName())) continue; |
Tao Bao | e8217ff | 2016-02-01 16:08:18 -0800 | [diff] [blame] | 710 | |
Tao Bao | 5065e12 | 2015-08-18 12:37:02 -0700 | [diff] [blame] | 711 | recursiveDelete(new File(RECOVERY_DIR, names[i])); |
Doug Zongker | 1af33d0 | 2010-01-05 11:28:55 -0800 | [diff] [blame] | 712 | } |
| 713 | |
| 714 | return log; |
| 715 | } |
| 716 | |
Jeff Sharkey | 004a4b2 | 2014-09-24 11:45:24 -0700 | [diff] [blame] | 717 | /** |
Tao Bao | 5065e12 | 2015-08-18 12:37:02 -0700 | [diff] [blame] | 718 | * Internally, delete a given file or directory recursively. |
| 719 | */ |
| 720 | private static void recursiveDelete(File name) { |
| 721 | if (name.isDirectory()) { |
| 722 | String[] files = name.list(); |
| 723 | for (int i = 0; files != null && i < files.length; i++) { |
| 724 | File f = new File(name, files[i]); |
| 725 | recursiveDelete(f); |
| 726 | } |
| 727 | } |
| 728 | |
| 729 | if (!name.delete()) { |
| 730 | Log.e(TAG, "Can't delete: " + name); |
| 731 | } else { |
| 732 | Log.i(TAG, "Deleted: " + name); |
| 733 | } |
| 734 | } |
| 735 | |
| 736 | /** |
Tao Bao | e8a403d | 2015-12-31 07:44:55 -0800 | [diff] [blame] | 737 | * Talks to RecoverySystemService via Binder to trigger uncrypt. |
| 738 | */ |
| 739 | private boolean uncrypt(String packageFile, IRecoverySystemProgressListener listener) { |
| 740 | try { |
| 741 | return mService.uncrypt(packageFile, listener); |
| 742 | } catch (RemoteException unused) { |
| 743 | } |
| 744 | return false; |
| 745 | } |
| 746 | |
| 747 | /** |
| 748 | * Talks to RecoverySystemService via Binder to set up the BCB. |
| 749 | */ |
| 750 | private boolean setupBcb(String command) { |
| 751 | try { |
| 752 | return mService.setupBcb(command); |
| 753 | } catch (RemoteException unused) { |
| 754 | } |
| 755 | return false; |
| 756 | } |
| 757 | |
| 758 | /** |
| 759 | * Talks to RecoverySystemService via Binder to clear up the BCB. |
| 760 | */ |
| 761 | private boolean clearBcb() { |
| 762 | try { |
| 763 | return mService.clearBcb(); |
| 764 | } catch (RemoteException unused) { |
| 765 | } |
| 766 | return false; |
| 767 | } |
| 768 | |
| 769 | /** |
Jeff Sharkey | 004a4b2 | 2014-09-24 11:45:24 -0700 | [diff] [blame] | 770 | * Internally, recovery treats each line of the command file as a separate |
| 771 | * argv, so we only need to protect against newlines and nulls. |
| 772 | */ |
| 773 | private static String sanitizeArg(String arg) { |
| 774 | arg = arg.replace('\0', '?'); |
| 775 | arg = arg.replace('\n', '?'); |
| 776 | return arg; |
| 777 | } |
| 778 | |
Andreas Gampe | 70e21e6 | 2015-03-18 16:13:33 -0700 | [diff] [blame] | 779 | |
| 780 | /** |
| 781 | * @removed Was previously made visible by accident. |
| 782 | */ |
Tao Bao | e8a403d | 2015-12-31 07:44:55 -0800 | [diff] [blame] | 783 | public RecoverySystem() { |
| 784 | mService = null; |
| 785 | } |
| 786 | |
| 787 | /** |
| 788 | * @hide |
| 789 | */ |
| 790 | public RecoverySystem(IRecoverySystem service) { |
| 791 | mService = service; |
| 792 | } |
Doug Zongker | 1af33d0 | 2010-01-05 11:28:55 -0800 | [diff] [blame] | 793 | } |