Java程序
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/*
* Copyright (C) 2014 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.server.pm;
import static android.content.pm.PackageManager.INSTALL_FAILED_ABORTED;
import static android.content.pm.PackageManager.INSTALL_FAILED_CONTAINER_ERROR;
import static android.content.pm.PackageManager.INSTALL_FAILED_INSUFFICIENT_STORAGE;
import static android.content.pm.PackageManager.INSTALL_FAILED_INTERNAL_ERROR;
import static android.content.pm.PackageManager.INSTALL_FAILED_INVALID_APK;
import static android.content.pm.PackageParser.APK_FILE_EXTENSION;
import static android.system.OsConstants.O_CREAT;
import static android.system.OsConstants.O_RDONLY;
import static android.system.OsConstants.O_WRONLY;
import static com.android.internal.util.XmlUtils.readBitmapAttribute;
import static com.android.internal.util.XmlUtils.readBooleanAttribute;
import static com.android.internal.util.XmlUtils.readIntAttribute;
import static com.android.internal.util.XmlUtils.readLongAttribute;
import static com.android.internal.util.XmlUtils.readStringAttribute;
import static com.android.internal.util.XmlUtils.readUriAttribute;
import static com.android.internal.util.XmlUtils.writeBooleanAttribute;
import static com.android.internal.util.XmlUtils.writeIntAttribute;
import static com.android.internal.util.XmlUtils.writeLongAttribute;
import static com.android.internal.util.XmlUtils.writeStringAttribute;
import static com.android.internal.util.XmlUtils.writeUriAttribute;
import static com.android.server.pm.PackageInstallerService.prepareStageDir;
import android.Manifest;
import android.annotation.NonNull;
import android.annotation.Nullable;
import android.app.admin.DeviceAdminInfo;
import android.app.admin.DevicePolicyManagerInternal;
import android.content.Context;
import android.content.Intent;
import android.content.IntentSender;
import android.content.pm.ApplicationInfo;
import android.content.pm.IPackageInstallObserver2;
import android.content.pm.IPackageInstallerSession;
import android.content.pm.PackageInfo;
import android.content.pm.PackageInstaller;
import android.content.pm.PackageInstaller.SessionInfo;
import android.content.pm.PackageInstaller.SessionParams;
import android.content.pm.PackageManager;
import android.content.pm.PackageParser;
import android.content.pm.PackageParser.ApkLite;
import android.content.pm.PackageParser.PackageLite;
import android.content.pm.PackageParser.PackageParserException;
import android.graphics.Bitmap;
import android.graphics.BitmapFactory;
import android.os.Binder;
import android.os.Bundle;
import android.os.FileBridge;
import android.os.FileUtils;
import android.os.Handler;
import android.os.Looper;
import android.os.Message;
import android.os.ParcelFileDescriptor;
import android.os.ParcelableException;
import android.os.Process;
import android.os.RemoteException;
import android.os.RevocableFileDescriptor;
import android.os.SystemProperties;
import android.os.UserHandle;
import android.os.storage.StorageManager;
import android.system.ErrnoException;
import android.system.Int64Ref;
import android.system.Os;
import android.system.OsConstants;
import android.system.StructStat;
import android.text.TextUtils;
import android.util.ArraySet;
import android.util.ExceptionUtils;
import android.util.MathUtils;
import android.util.Slog;
import android.util.apk.ApkSignatureVerifier;
import com.android.internal.annotations.GuardedBy;
import com.android.internal.content.NativeLibraryHelper;
import com.android.internal.content.PackageHelper;
import com.android.internal.os.SomeArgs;
import com.android.internal.util.ArrayUtils;
import com.android.internal.util.IndentingPrintWriter;
import com.android.internal.util.Preconditions;
import com.android.server.LocalServices;
import com.android.server.pm.Installer.InstallerException;
import com.android.server.pm.PackageInstallerService.PackageInstallObserverAdapter;
import android.content.pm.dex.DexMetadataHelper;
import libcore.io.IoUtils;
import org.xmlpull.v1.XmlPullParser;
import org.xmlpull.v1.XmlPullParserException;
import org.xmlpull.v1.XmlSerializer;
import java.io.File;
import java.io.FileDescriptor;
import java.io.FileFilter;
import java.io.FileOutputStream;
import java.io.IOException;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.LinkedList;
import java.util.List;
import java.util.concurrent.atomic.AtomicInteger;
public class PackageInstallerSession extends IPackageInstallerSession.Stub {
private static final String TAG = "PackageInstaller";
private static final boolean LOGD = true;
private static final String REMOVE_SPLIT_MARKER_EXTENSION = ".removed";
private static final int MSG_EARLY_BIND = 0;
private static final int MSG_COMMIT = 1;
private static final int MSG_ON_PACKAGE_INSTALLED = 2;
/** XML constants used for persisting a session */
static final String TAG_SESSION = "session";
private static final String TAG_GRANTED_RUNTIME_PERMISSION = "granted-runtime-permission";
private static final String ATTR_SESSION_ID = "sessionId";
private static final String ATTR_USER_ID = "userId";
private static final String ATTR_INSTALLER_PACKAGE_NAME = "installerPackageName";
private static final String ATTR_INSTALLER_UID = "installerUid";
private static final String ATTR_CREATED_MILLIS = "createdMillis";
private static final String ATTR_SESSION_STAGE_DIR = "sessionStageDir";
private static final String ATTR_SESSION_STAGE_CID = "sessionStageCid";
private static final String ATTR_PREPARED = "prepared";
private static final String ATTR_SEALED = "sealed";
private static final String ATTR_MODE = "mode";
private static final String ATTR_INSTALL_FLAGS = "installFlags";
private static final String ATTR_INSTALL_LOCATION = "installLocation";
private static final String ATTR_SIZE_BYTES = "sizeBytes";
private static final String ATTR_APP_PACKAGE_NAME = "appPackageName";
@Deprecated
private static final String ATTR_APP_ICON = "appIcon";
private static final String ATTR_APP_LABEL = "appLabel";
private static final String ATTR_ORIGINATING_URI = "originatingUri";
private static final String ATTR_ORIGINATING_UID = "originatingUid";
private static final String ATTR_REFERRER_URI = "referrerUri";
private static final String ATTR_ABI_OVERRIDE = "abiOverride";
private static final String ATTR_VOLUME_UUID = "volumeUuid";
private static final String ATTR_NAME = "name";
private static final String ATTR_INSTALL_REASON = "installRason";
private static final String PROPERTY_NAME_INHERIT_NATIVE = "pi.inherit_native_on_dont_kill";
// TODO: enforce INSTALL_ALLOW_TEST
// TODO: enforce INSTALL_ALLOW_DOWNGRADE
private final PackageInstallerService.InternalCallback mCallback;
private final Context mContext;
private final PackageManagerService mPm;
private final Handler mHandler;
final int sessionId;
final int userId;
final SessionParams params;
final long createdMillis;
final int defaultContainerGid;
/** Staging location where client data is written. */
final File stageDir;
final String stageCid;
private final AtomicInteger mActiveCount = new AtomicInteger();
private final Object mLock = new Object();
/** Uid of the creator of this session. */
private final int mOriginalInstallerUid;
/** Package of the owner of the installer session */
@GuardedBy("mLock")
private String mInstallerPackageName;
/** Uid of the owner of the installer session */
@GuardedBy("mLock")
private int mInstallerUid;
@GuardedBy("mLock")
private float mClientProgress = 0;
@GuardedBy("mLock")
private float mInternalProgress = 0;
@GuardedBy("mLock")
private float mProgress = 0;
@GuardedBy("mLock")
private float mReportedProgress = -1;
/** State of the session. */
@GuardedBy("mLock")
private boolean mPrepared = false;
@GuardedBy("mLock")
private boolean mSealed = false;
@GuardedBy("mLock")
private boolean mCommitted = false;
@GuardedBy("mLock")
private boolean mRelinquished = false;
@GuardedBy("mLock")
private boolean mDestroyed = false;
/** Permissions have been accepted by the user (see {@link #setPermissionsResult}) */
@GuardedBy("mLock")
private boolean mPermissionsManuallyAccepted = false;
@GuardedBy("mLock")
private int mFinalStatus;
@GuardedBy("mLock")
private String mFinalMessage;
@GuardedBy("mLock")
private final ArrayList<RevocableFileDescriptor> mFds = new ArrayList<>();
@GuardedBy("mLock")
private final ArrayList<FileBridge> mBridges = new ArrayList<>();
@GuardedBy("mLock")
private IPackageInstallObserver2 mRemoteObserver;
/** Fields derived from commit parsing */
@GuardedBy("mLock")
private String mPackageName;
@GuardedBy("mLock")
private long mVersionCode;
@GuardedBy("mLock")
private PackageParser.SigningDetails mSigningDetails;
/**
* Path to the validated base APK for this session, which may point at an
* APK inside the session (when the session defines the base), or it may
* point at the existing base APK (when adding splits to an existing app).
* <p>
* This is used when confirming permissions, since we can't fully stage the
* session inside an ASEC before confirming with user.
*/
@GuardedBy("mLock")
private File mResolvedBaseFile;
@GuardedBy("mLock")
private File mResolvedStageDir;
@GuardedBy("mLock")
private final List<File> mResolvedStagedFiles = new ArrayList<>();
@GuardedBy("mLock")
private final List<File> mResolvedInheritedFiles = new ArrayList<>();
@GuardedBy("mLock")
private final List<String> mResolvedInstructionSets = new ArrayList<>();
@GuardedBy("mLock")
private final List<String> mResolvedNativeLibPaths = new ArrayList<>();
@GuardedBy("mLock")
private File mInheritedFilesBase;
private static final FileFilter sAddedFilter = new FileFilter() {
@Override
public boolean accept(File file) {
// Installers can't stage directories, so it's fine to ignore
// entries like "lost+found".
if (file.isDirectory()) return false;
if (file.getName().endsWith(REMOVE_SPLIT_MARKER_EXTENSION)) return false;
if (DexMetadataHelper.isDexMetadataFile(file)) return false;
return true;
}
};
private static final FileFilter sRemovedFilter = new FileFilter() {
@Override
public boolean accept(File file) {
if (file.isDirectory()) return false;
if (!file.getName().endsWith(REMOVE_SPLIT_MARKER_EXTENSION)) return false;
return true;
}
};
private final Handler.Callback mHandlerCallback = new Handler.Callback() {
@Override
public boolean handleMessage(Message msg) {
switch (msg.what) {
case MSG_EARLY_BIND:
earlyBindToDefContainer();
break;
case MSG_COMMIT:
synchronized (mLock) {
try {
commitLocked();
} catch (PackageManagerException e) {
final String completeMsg = ExceptionUtils.getCompleteMessage(e);
Slog.e(TAG,
"Commit of session " + sessionId + " failed: " + completeMsg);
destroyInternal();
dispatchSessionFinished(e.error, completeMsg, null);
}
}
break;
case MSG_ON_PACKAGE_INSTALLED:
final SomeArgs args = (SomeArgs) msg.obj;
final String packageName = (String) args.arg1;
final String message = (String) args.arg2;
final Bundle extras = (Bundle) args.arg3;
final IPackageInstallObserver2 observer = (IPackageInstallObserver2) args.arg4;
final int returnCode = args.argi1;
args.recycle();
try {
observer.onPackageInstalled(packageName, returnCode, message, extras);
} catch (RemoteException ignored) {
}
break;
}
return true;
}
};
private void earlyBindToDefContainer() {
mPm.earlyBindToDefContainer();
}
/**
* @return {@code true} iff the installing is app an device owner or affiliated profile owner.
*/
@GuardedBy("mLock")
private boolean isInstallerDeviceOwnerOrAffiliatedProfileOwnerLocked() {
DevicePolicyManagerInternal dpmi =
LocalServices.getService(DevicePolicyManagerInternal.class);
return dpmi != null && dpmi.isActiveAdminWithPolicy(mInstallerUid,
DeviceAdminInfo.USES_POLICY_PROFILE_OWNER) && dpmi.isUserAffiliatedWithDevice(
userId);
}
/**
* Checks if the permissions still need to be confirmed.
*
* <p>This is dependant on the identity of the installer, hence this cannot be cached if the
* installer might still {@link #transfer(String) change}.
*
* @return {@code true} iff we need to ask to confirm the permissions?
*/
@GuardedBy("mLock")
private boolean needToAskForPermissionsLocked() {
if (mPermissionsManuallyAccepted) {
return false;
}
final boolean isInstallPermissionGranted =
(mPm.checkUidPermission(android.Manifest.permission.INSTALL_PACKAGES,
mInstallerUid) == PackageManager.PERMISSION_GRANTED);
final boolean isSelfUpdatePermissionGranted =
(mPm.checkUidPermission(android.Manifest.permission.INSTALL_SELF_UPDATES,
mInstallerUid) == PackageManager.PERMISSION_GRANTED);
final boolean isUpdatePermissionGranted =
(mPm.checkUidPermission(android.Manifest.permission.INSTALL_PACKAGE_UPDATES,
mInstallerUid) == PackageManager.PERMISSION_GRANTED);
final int targetPackageUid = mPm.getPackageUid(mPackageName, 0, userId);
final boolean isPermissionGranted = isInstallPermissionGranted
|| (isUpdatePermissionGranted && targetPackageUid != -1)
|| (isSelfUpdatePermissionGranted && targetPackageUid == mInstallerUid);
final boolean isInstallerRoot = (mInstallerUid == Process.ROOT_UID);
final boolean isInstallerSystem = (mInstallerUid == Process.SYSTEM_UID);
final boolean forcePermissionPrompt =
(params.installFlags & PackageManager.INSTALL_FORCE_PERMISSION_PROMPT) != 0;
// Device owners and affiliated profile owners are allowed to silently install packages, so
// the permission check is waived if the installer is the device owner.
return forcePermissionPrompt || !(isPermissionGranted || isInstallerRoot
|| isInstallerSystem || isInstallerDeviceOwnerOrAffiliatedProfileOwnerLocked());
}
public PackageInstallerSession(PackageInstallerService.InternalCallback callback,
Context context, PackageManagerService pm, Looper looper, int sessionId, int userId,
String installerPackageName, int installerUid, SessionParams params, long createdMillis,
File stageDir, String stageCid, boolean prepared, boolean sealed) {
mCallback = callback;
mContext = context;
mPm = pm;
mHandler = new Handler(looper, mHandlerCallback);
this.sessionId = sessionId;
this.userId = userId;
mOriginalInstallerUid = installerUid;
mInstallerPackageName = installerPackageName;
mInstallerUid = installerUid;
this.params = params;
this.createdMillis = createdMillis;
this.stageDir = stageDir;
this.stageCid = stageCid;
if ((stageDir == null) == (stageCid == null)) {
throw new IllegalArgumentException(
"Exactly one of stageDir or stageCid stage must be set");
}
mPrepared = prepared;
if (sealed) {
synchronized (mLock) {
try {
sealAndValidateLocked();
} catch (PackageManagerException | IOException e) {
destroyInternal();
throw new IllegalArgumentException(e);
}
}
}
final long identity = Binder.clearCallingIdentity();
try {
final int uid = mPm.getPackageUid(PackageManagerService.DEFAULT_CONTAINER_PACKAGE,
PackageManager.MATCH_SYSTEM_ONLY, UserHandle.USER_SYSTEM);
defaultContainerGid = UserHandle.getSharedAppGid(uid);
} finally {
Binder.restoreCallingIdentity(identity);
}
// attempt to bind to the DefContainer as early as possible
if ((params.installFlags & PackageManager.INSTALL_INSTANT_APP) != 0) {
mHandler.sendMessage(mHandler.obtainMessage(MSG_EARLY_BIND));
}
}
public SessionInfo generateInfo() {
return generateInfo(true);
}
public SessionInfo generateInfo(boolean includeIcon) {
final SessionInfo info = new SessionInfo();
synchronized (mLock) {
info.sessionId = sessionId;
info.installerPackageName = mInstallerPackageName;
info.resolvedBaseCodePath = (mResolvedBaseFile != null) ?
mResolvedBaseFile.getAbsolutePath() : null;
info.progress = mProgress;
info.sealed = mSealed;
info.active = mActiveCount.get() > 0;
info.mode = params.mode;
info.installReason = params.installReason;
info.sizeBytes = params.sizeBytes;
info.appPackageName = params.appPackageName;
if (includeIcon) {
info.appIcon = params.appIcon;
}
info.appLabel = params.appLabel;
info.installLocation = params.installLocation;
info.originatingUri = params.originatingUri;
info.originatingUid = params.originatingUid;
info.referrerUri = params.referrerUri;
info.grantedRuntimePermissions = params.grantedRuntimePermissions;
info.installFlags = params.installFlags;
}
return info;
}
public boolean isPrepared() {
synchronized (mLock) {
return mPrepared;
}
}
public boolean isSealed() {
synchronized (mLock) {
return mSealed;
}
}
@GuardedBy("mLock")
private void assertPreparedAndNotSealedLocked(String cookie) {
assertPreparedAndNotCommittedOrDestroyedLocked(cookie);
if (mSealed) {
throw new SecurityException(cookie + " not allowed after sealing");
}
}
@GuardedBy("mLock")
private void assertPreparedAndNotCommittedOrDestroyedLocked(String cookie) {
assertPreparedAndNotDestroyedLocked(cookie);
if (mCommitted) {
throw new SecurityException(cookie + " not allowed after commit");
}
}
@GuardedBy("mLock")
private void assertPreparedAndNotDestroyedLocked(String cookie) {
if (!mPrepared) {
throw new IllegalStateException(cookie + " before prepared");
}
if (mDestroyed) {
throw new SecurityException(cookie + " not allowed after destruction");
}
}
/**
* Resolve the actual location where staged data should be written. This
* might point at an ASEC mount point, which is why we delay path resolution
* until someone actively works with the session.
*/
@GuardedBy("mLock")
private File resolveStageDirLocked() throws IOException {
if (mResolvedStageDir == null) {
if (stageDir != null) {
mResolvedStageDir = stageDir;
} else {
throw new IOException("Missing stageDir");
}
}
return mResolvedStageDir;
}
@Override
public void setClientProgress(float progress) {
synchronized (mLock) {
assertCallerIsOwnerOrRootLocked();
// Always publish first staging movement
final boolean forcePublish = (mClientProgress == 0);
mClientProgress = progress;
computeProgressLocked(forcePublish);
}
}
@Override
public void addClientProgress(float progress) {
synchronized (mLock) {
assertCallerIsOwnerOrRootLocked();
setClientProgress(mClientProgress + progress);
}
}
@GuardedBy("mLock")
private void computeProgressLocked(boolean forcePublish) {
mProgress = MathUtils.constrain(mClientProgress * 0.8f, 0f, 0.8f)
+ MathUtils.constrain(mInternalProgress * 0.2f, 0f, 0.2f);
// Only publish when meaningful change
if (forcePublish || Math.abs(mProgress - mReportedProgress) >= 0.01) {
mReportedProgress = mProgress;
mCallback.onSessionProgressChanged(this, mProgress);
}
}
@Override
public String[] getNames() {
synchronized (mLock) {
assertCallerIsOwnerOrRootLocked();
assertPreparedAndNotCommittedOrDestroyedLocked("getNames");
try {
return resolveStageDirLocked().list();
} catch (IOException e) {
throw ExceptionUtils.wrap(e);
}
}
}
@Override
public void removeSplit(String splitName) {
if (TextUtils.isEmpty(params.appPackageName)) {
throw new IllegalStateException("Must specify package name to remove a split");
}
synchronized (mLock) {
assertCallerIsOwnerOrRootLocked();
assertPreparedAndNotCommittedOrDestroyedLocked("removeSplit");
try {
createRemoveSplitMarkerLocked(splitName);
} catch (IOException e) {
throw ExceptionUtils.wrap(e);
}
}
}
private void createRemoveSplitMarkerLocked(String splitName) throws IOException {
try {
final String markerName = splitName + REMOVE_SPLIT_MARKER_EXTENSION;
if (!FileUtils.isValidExtFilename(markerName)) {
throw new IllegalArgumentException("Invalid marker: " + markerName);
}
final File target = new File(resolveStageDirLocked(), markerName);
target.createNewFile();
Os.chmod(target.getAbsolutePath(), 0 /*mode*/);
} catch (ErrnoException e) {
throw e.rethrowAsIOException();
}
}
@Override
public ParcelFileDescriptor openWrite(String name, long offsetBytes, long lengthBytes) {
try {
return doWriteInternal(name, offsetBytes, lengthBytes, null);
} catch (IOException e) {
throw ExceptionUtils.wrap(e);
}
}
@Override
public void write(String name, long offsetBytes, long lengthBytes,
ParcelFileDescriptor fd) {
try {
doWriteInternal(name, offsetBytes, lengthBytes, fd);
} catch (IOException e) {
throw ExceptionUtils.wrap(e);
}
}
private ParcelFileDescriptor doWriteInternal(String name, long offsetBytes, long lengthBytes,
ParcelFileDescriptor incomingFd) throws IOException {
// Quick sanity check of state, and allocate a pipe for ourselves. We
// then do heavy disk allocation outside the lock, but this open pipe
// will block any attempted install transitions.
final RevocableFileDescriptor fd;
final FileBridge bridge;
final File stageDir;
synchronized (mLock) {
assertCallerIsOwnerOrRootLocked();
assertPreparedAndNotSealedLocked("openWrite");
if (PackageInstaller.ENABLE_REVOCABLE_FD) {
fd = new RevocableFileDescriptor();
bridge = null;
mFds.add(fd);
} else {
fd = null;
bridge = new FileBridge();
mBridges.add(bridge);
}
stageDir = resolveStageDirLocked();
}
try {
// Use installer provided name for now; we always rename later
if (!FileUtils.isValidExtFilename(name)) {
throw new IllegalArgumentException("Invalid name: " + name);
}
final File target;
final long identity = Binder.clearCallingIdentity();
try {
target = new File(stageDir, name);
} finally {
Binder.restoreCallingIdentity(identity);
}
// TODO: this should delegate to DCS so the system process avoids
// holding open FDs into containers.
final FileDescriptor targetFd = Os.open(target.getAbsolutePath(),
O_CREAT | O_WRONLY, 0644);
Os.chmod(target.getAbsolutePath(), 0644);
// If caller specified a total length, allocate it for them. Free up
// cache space to grow, if needed.
if (stageDir != null && lengthBytes > 0) {
mContext.getSystemService(StorageManager.class).allocateBytes(targetFd, lengthBytes,
PackageHelper.translateAllocateFlags(params.installFlags));
}
if (offsetBytes > 0) {
Os.lseek(targetFd, offsetBytes, OsConstants.SEEK_SET);
}
if (incomingFd != null) {
switch (Binder.getCallingUid()) {
case android.os.Process.SHELL_UID:
case android.os.Process.ROOT_UID:
break;
default:
throw new SecurityException("Reverse mode only supported from shell");
}
// In "reverse" mode, we're streaming data ourselves from the
// incoming FD, which means we never have to hand out our
// sensitive internal FD. We still rely on a "bridge" being
// inserted above to hold the session active.
try {
final Int64Ref last = new Int64Ref(0);
FileUtils.copy(incomingFd.getFileDescriptor(), targetFd, (long progress) -> {
if (params.sizeBytes > 0) {
final long delta = progress - last.value;
last.value = progress;
addClientProgress((float) delta / (float) params.sizeBytes);
}
}, null, lengthBytes);
} finally {
IoUtils.closeQuietly(targetFd);
IoUtils.closeQuietly(incomingFd);
// We're done here, so remove the "bridge" that was holding
// the session active.
synchronized (mLock) {
if (PackageInstaller.ENABLE_REVOCABLE_FD) {
mFds.remove(fd);
} else {
mBridges.remove(bridge);
}
}
}
return null;
} else if (PackageInstaller.ENABLE_REVOCABLE_FD) {
fd.init(mContext, targetFd);
return fd.getRevocableFileDescriptor();
} else {
bridge.setTargetFile(targetFd);
bridge.start();
return new ParcelFileDescriptor(bridge.getClientSocket());
}
} catch (ErrnoException e) {
throw e.rethrowAsIOException();
}
}
@Override
public ParcelFileDescriptor openRead(String name) {
synchronized (mLock) {
assertCallerIsOwnerOrRootLocked();
assertPreparedAndNotCommittedOrDestroyedLocked("openRead");
try {
return openReadInternalLocked(name);
} catch (IOException e) {
throw ExceptionUtils.wrap(e);
}
}
}
private ParcelFileDescriptor openReadInternalLocked(String name) throws IOException {
try {
if (!FileUtils.isValidExtFilename(name)) {
throw new IllegalArgumentException("Invalid name: " + name);
}
final File target = new File(resolveStageDirLocked(), name);
final FileDescriptor targetFd = Os.open(target.getAbsolutePath(), O_RDONLY, 0);
return new ParcelFileDescriptor(targetFd);
} catch (ErrnoException e) {
throw e.rethrowAsIOException();
}
}
/**
* Check if the caller is the owner of this session. Otherwise throw a
* {@link SecurityException}.
*/
@GuardedBy("mLock")
private void assertCallerIsOwnerOrRootLocked() {
final int callingUid = Binder.getCallingUid();
if (callingUid != Process.ROOT_UID && callingUid != mInstallerUid) {
throw new SecurityException("Session does not belong to uid " + callingUid);
}
}
/**
* If anybody is reading or writing data of the session, throw an {@link SecurityException}.
*/
@GuardedBy("mLock")
private void assertNoWriteFileTransfersOpenLocked() {
// Verify that all writers are hands-off
for (RevocableFileDescriptor fd : mFds) {
if (!fd.isRevoked()) {
throw new SecurityException("Files still open");
}
}
for (FileBridge bridge : mBridges) {
if (!bridge.isClosed()) {
throw new SecurityException("Files still open");
}
}
}
@Override
public void commit(@NonNull IntentSender statusReceiver, boolean forTransfer) {
Preconditions.checkNotNull(statusReceiver);
final boolean wasSealed;
synchronized (mLock) {
assertCallerIsOwnerOrRootLocked();
assertPreparedAndNotDestroyedLocked("commit");
final PackageInstallObserverAdapter adapter = new PackageInstallObserverAdapter(
mContext, statusReceiver, sessionId,
isInstallerDeviceOwnerOrAffiliatedProfileOwnerLocked(), userId);
mRemoteObserver = adapter.getBinder();
if (forTransfer) {
mContext.enforceCallingOrSelfPermission(Manifest.permission.INSTALL_PACKAGES, null);
if (mInstallerUid == mOriginalInstallerUid) {
throw new IllegalArgumentException("Session has not been transferred");
}
} else {
if (mInstallerUid != mOriginalInstallerUid) {
throw new IllegalArgumentException("Session has been transferred");
}
}
wasSealed = mSealed;
if (!mSealed) {
try {
sealAndValidateLocked();
} catch (IOException e) {
throw new IllegalArgumentException(e);
} catch (PackageManagerException e) {
// Do now throw an exception here to stay compatible with O and older
destroyInternal();
dispatchSessionFinished(e.error, ExceptionUtils.getCompleteMessage(e), null);
return;
}
}
// Client staging is fully done at this point
mClientProgress = 1f;
computeProgressLocked(true);
// This ongoing commit should keep session active, even though client
// will probably close their end.
mActiveCount.incrementAndGet();
mCommitted = true;
mHandler.obtainMessage(MSG_COMMIT).sendToTarget();
}
if (!wasSealed) {
// Persist the fact that we've sealed ourselves to prevent
// mutations of any hard links we create. We do this without holding
// the session lock, since otherwise it's a lock inversion.
mCallback.onSessionSealedBlocking(this);
}
}
/**
* Seal the session to prevent further modification and validate the contents of it.
*
* <p>The session will be sealed after calling this method even if it failed.
*
* @throws PackageManagerException if the session was sealed but something went wrong. If the
* session was sealed this is the only possible exception.
*/
@GuardedBy("mLock")
private void sealAndValidateLocked() throws PackageManagerException, IOException {
assertNoWriteFileTransfersOpenLocked();
assertPreparedAndNotDestroyedLocked("sealing of session");
final PackageInfo pkgInfo = mPm.getPackageInfo(
params.appPackageName, PackageManager.GET_SIGNATURES
| PackageManager.MATCH_STATIC_SHARED_LIBRARIES /*flags*/, userId);
resolveStageDirLocked();
mSealed = true;
// Verify that stage looks sane with respect to existing application.
// This currently only ensures packageName, versionCode, and certificate
// consistency.
try {
validateInstallLocked(pkgInfo);
} catch (PackageManagerException e) {
throw e;
} catch (Throwable e) {
// Convert all exceptions into package manager exceptions as only those are handled
// in the code above
throw new PackageManagerException(e);
}
// Read transfers from the original owner stay open, but as the session's data
// cannot be modified anymore, there is no leak of information.
}
@Override
public void transfer(String packageName) {
Preconditions.checkNotNull(packageName);
ApplicationInfo newOwnerAppInfo = mPm.getApplicationInfo(packageName, 0, userId);
if (newOwnerAppInfo == null) {
throw new ParcelableException(new PackageManager.NameNotFoundException(packageName));
}
if (PackageManager.PERMISSION_GRANTED != mPm.checkUidPermission(
Manifest.permission.INSTALL_PACKAGES, newOwnerAppInfo.uid)) {
throw new SecurityException("Destination package " + packageName + " does not have "
+ "the " + Manifest.permission.INSTALL_PACKAGES + " permission");
}
// Only install flags that can be verified by the app the session is transferred to are
// allowed. The parameters can be read via PackageInstaller.SessionInfo.
if (!params.areHiddenOptionsSet()) {
throw new SecurityException("Can only transfer sessions that use public options");
}
synchronized (mLock) {
assertCallerIsOwnerOrRootLocked();
assertPreparedAndNotSealedLocked("transfer");
try {
sealAndValidateLocked();
} catch (IOException e) {
throw new IllegalStateException(e);
} catch (PackageManagerException e) {
// Session is sealed but could not be verified, we need to destroy it
destroyInternal();
dispatchSessionFinished(e.error, ExceptionUtils.getCompleteMessage(e), null);
throw new IllegalArgumentException("Package is not valid", e);
}
if (!mPackageName.equals(mInstallerPackageName)) {
throw new SecurityException("Can only transfer sessions that update the original "
+ "installer");
}
mInstallerPackageName = packageName;
mInstallerUid = newOwnerAppInfo.uid;
}
// Persist the fact that we've sealed ourselves to prevent
// mutations of any hard links we create. We do this without holding
// the session lock, since otherwise it's a lock inversion.
mCallback.onSessionSealedBlocking(this);
}
@GuardedBy("mLock")
private void commitLocked()
throws PackageManagerException {
if (mDestroyed) {
throw new PackageManagerException(INSTALL_FAILED_INTERNAL_ERROR, "Session destroyed");
}
if (!mSealed) {
throw new PackageManagerException(INSTALL_FAILED_INTERNAL_ERROR, "Session not sealed");
}
Preconditions.checkNotNull(mPackageName);
Preconditions.checkNotNull(mSigningDetails);
Preconditions.checkNotNull(mResolvedBaseFile);
if (needToAskForPermissionsLocked()) {
// User needs to accept permissions; give installer an intent they
// can use to involve user.
final Intent intent = new Intent(PackageInstaller.ACTION_CONFIRM_PERMISSIONS);
intent.setPackage(mContext.getPackageManager().getPermissionControllerPackageName());
intent.putExtra(PackageInstaller.EXTRA_SESSION_ID, sessionId);
try {
mRemoteObserver.onUserActionRequired(intent);
} catch (RemoteException ignored) {
}
// Commit was keeping session marked as active until now; release
// that extra refcount so session appears idle.
closeInternal(false);
return;
}
// Inherit any packages and native libraries from existing install that
// haven't been overridden.
if (params.mode == SessionParams.MODE_INHERIT_EXISTING) {
try {
final List<File> fromFiles = mResolvedInheritedFiles;
final File toDir = resolveStageDirLocked();
if (LOGD) Slog.d(TAG, "Inherited files: " + mResolvedInheritedFiles);
if (!mResolvedInheritedFiles.isEmpty() && mInheritedFilesBase == null) {
throw new IllegalStateException("mInheritedFilesBase == null");
}
if (isLinkPossible(fromFiles, toDir)) {
if (!mResolvedInstructionSets.isEmpty()) {
final File oatDir = new File(toDir, "oat");
createOatDirs(mResolvedInstructionSets, oatDir);
}
// pre-create lib dirs for linking if necessary
if (!mResolvedNativeLibPaths.isEmpty()) {
for (String libPath : mResolvedNativeLibPaths) {
// "/lib/arm64" -> ["lib", "arm64"]
final int splitIndex = libPath.lastIndexOf('/');
if (splitIndex < 0 || splitIndex >= libPath.length() - 1) {
Slog.e(TAG, "Skipping native library creation for linking due to "
+ "invalid path: " + libPath);
continue;
}
final String libDirPath = libPath.substring(1, splitIndex);
final File libDir = new File(toDir, libDirPath);
if (!libDir.exists()) {
NativeLibraryHelper.createNativeLibrarySubdir(libDir);
}
final String archDirPath = libPath.substring(splitIndex + 1);
NativeLibraryHelper.createNativeLibrarySubdir(
new File(libDir, archDirPath));
}
}
linkFiles(fromFiles, toDir, mInheritedFilesBase);
} else {
// TODO: this should delegate to DCS so the system process
// avoids holding open FDs into containers.
copyFiles(fromFiles, toDir);
}
} catch (IOException e) {
throw new PackageManagerException(INSTALL_FAILED_INSUFFICIENT_STORAGE,
"Failed to inherit existing install", e);
}
}
// TODO: surface more granular state from dexopt
mInternalProgress = 0.5f;
computeProgressLocked(true);
// Unpack native libraries
extractNativeLibraries(mResolvedStageDir, params.abiOverride, mayInheritNativeLibs());
// We've reached point of no return; call into PMS to install the stage.
// Regardless of success or failure we always destroy session.
final IPackageInstallObserver2 localObserver = new IPackageInstallObserver2.Stub() {
@Override
public void onUserActionRequired(Intent intent) {
throw new IllegalStateException();
}
@Override
public void onPackageInstalled(String basePackageName, int returnCode, String msg,
Bundle extras) {
destroyInternal();
dispatchSessionFinished(returnCode, msg, extras);
}
};
final UserHandle user;
if ((params.installFlags & PackageManager.INSTALL_ALL_USERS) != 0) {
user = UserHandle.ALL;
} else {
user = new UserHandle(userId);
}
mRelinquished = true;
mPm.installStage(mPackageName, stageDir, localObserver, params,
mInstallerPackageName, mInstallerUid, user, mSigningDetails);
}
private static void maybeRenameFile(File from, File to) throws PackageManagerException {
if (!from.equals(to)) {
if (!from.renameTo(to)) {
throw new PackageManagerException(INSTALL_FAILED_INTERNAL_ERROR,
"Could not rename file " + from + " to " + to);
}
}
}
/**
* Returns true if the session should attempt to inherit any existing native libraries already
* extracted at the current install location. This is necessary to prevent double loading of
* native libraries already loaded by the running app.
*/
private boolean mayInheritNativeLibs() {
return SystemProperties.getBoolean(PROPERTY_NAME_INHERIT_NATIVE, true) &&
params.mode == SessionParams.MODE_INHERIT_EXISTING &&
(params.installFlags & PackageManager.DONT_KILL_APP) != 0;
}
/**
* Validate install by confirming that all application packages are have
* consistent package name, version code, and signing certificates.
* <p>
* Clears and populates {@link #mResolvedBaseFile},
* {@link #mResolvedStagedFiles}, and {@link #mResolvedInheritedFiles}.
* <p>
* Renames package files in stage to match split names defined inside.
* <p>
* Note that upgrade compatibility is still performed by
* {@link PackageManagerService}.
*/
@GuardedBy("mLock")
private void validateInstallLocked(@Nullable PackageInfo pkgInfo)
throws PackageManagerException {
mPackageName = null;
mVersionCode = -1;
mSigningDetails = PackageParser.SigningDetails.UNKNOWN;
mResolvedBaseFile = null;
mResolvedStagedFiles.clear();
mResolvedInheritedFiles.clear();
try {
resolveStageDirLocked();
} catch (IOException e) {
throw new PackageManagerException(INSTALL_FAILED_CONTAINER_ERROR,
"Failed to resolve stage location", e);
}
final File[] removedFiles = mResolvedStageDir.listFiles(sRemovedFilter);
final List<String> removeSplitList = new ArrayList<>();
if (!ArrayUtils.isEmpty(removedFiles)) {
for (File removedFile : removedFiles) {
final String fileName = removedFile.getName();
final String splitName = fileName.substring(
0, fileName.length() - REMOVE_SPLIT_MARKER_EXTENSION.length());
removeSplitList.add(splitName);
}
}
final File[] addedFiles = mResolvedStageDir.listFiles(sAddedFilter);
if (ArrayUtils.isEmpty(addedFiles) && removeSplitList.size() == 0) {
throw new PackageManagerException(INSTALL_FAILED_INVALID_APK, "No packages staged");
}
// Verify that all staged packages are internally consistent
final ArraySet<String> stagedSplits = new ArraySet<>();
for (File addedFile : addedFiles) {
final ApkLite apk;
try {
apk = PackageParser.parseApkLite(
addedFile, PackageParser.PARSE_COLLECT_CERTIFICATES);
} catch (PackageParserException e) {
throw PackageManagerException.from(e);
}
if (!stagedSplits.add(apk.splitName)) {
throw new PackageManagerException(INSTALL_FAILED_INVALID_APK,
"Split " + apk.splitName + " was defined multiple times");
}
// Use first package to define unknown values
if (mPackageName == null) {
mPackageName = apk.packageName;
mVersionCode = apk.getLongVersionCode();
}
if (mSigningDetails == PackageParser.SigningDetails.UNKNOWN) {
mSigningDetails = apk.signingDetails;
}
assertApkConsistentLocked(String.valueOf(addedFile), apk);
// Take this opportunity to enforce uniform naming
final String targetName;
if (apk.splitName == null) {
targetName = "base" + APK_FILE_EXTENSION;
} else {
targetName = "split_" + apk.splitName + APK_FILE_EXTENSION;
}
if (!FileUtils.isValidExtFilename(targetName)) {
throw new PackageManagerException(INSTALL_FAILED_INVALID_APK,
"Invalid filename: " + targetName);
}
final File targetFile = new File(mResolvedStageDir, targetName);
maybeRenameFile(addedFile, targetFile);
// Base is coming from session
if (apk.splitName == null) {
mResolvedBaseFile = targetFile;
}
mResolvedStagedFiles.add(targetFile);
final File dexMetadataFile = DexMetadataHelper.findDexMetadataForFile(addedFile);
if (dexMetadataFile != null) {
if (!FileUtils.isValidExtFilename(dexMetadataFile.getName())) {
throw new PackageManagerException(INSTALL_FAILED_INVALID_APK,
"Invalid filename: " + dexMetadataFile);
}
final File targetDexMetadataFile = new File(mResolvedStageDir,
DexMetadataHelper.buildDexMetadataPathForApk(targetName));
mResolvedStagedFiles.add(targetDexMetadataFile);
maybeRenameFile(dexMetadataFile, targetDexMetadataFile);
}
}
if (removeSplitList.size() > 0) {
if (pkgInfo == null) {
throw new PackageManagerException(INSTALL_FAILED_INVALID_APK,
"Missing existing base package for " + mPackageName);
}
// validate split names marked for removal
for (String splitName : removeSplitList) {
if (!ArrayUtils.contains(pkgInfo.splitNames, splitName)) {
throw new PackageManagerException(INSTALL_FAILED_INVALID_APK,
"Split not found: " + splitName);
}
}
// ensure we've got appropriate package name, version code and signatures
if (mPackageName == null) {
mPackageName = pkgInfo.packageName;
mVersionCode = pkgInfo.getLongVersionCode();
}
if (mSigningDetails == PackageParser.SigningDetails.UNKNOWN) {
try {
mSigningDetails = ApkSignatureVerifier.plsCertsNoVerifyOnlyCerts(
pkgInfo.applicationInfo.sourceDir,
PackageParser.SigningDetails.SignatureSchemeVersion.JAR);
} catch (PackageParserException e) {
throw new PackageManagerException(INSTALL_FAILED_INVALID_APK,
"Couldn't obtain signatures from base APK");
}
}
}
if (params.mode == SessionParams.MODE_FULL_INSTALL) {
// Full installs must include a base package
if (!stagedSplits.contains(null)) {
throw new PackageManagerException(INSTALL_FAILED_INVALID_APK,
"Full install must include a base package");
}
} else {
// Partial installs must be consistent with existing install
if (pkgInfo == null || pkgInfo.applicationInfo == null) {
throw new PackageManagerException(INSTALL_FAILED_INVALID_APK,
"Missing existing base package for " + mPackageName);
}
final PackageLite existing;
final ApkLite existingBase;
ApplicationInfo appInfo = pkgInfo.applicationInfo;
try {
existing = PackageParser.parsePackageLite(new File(appInfo.getCodePath()), 0);
existingBase = PackageParser.parseApkLite(new File(appInfo.getBaseCodePath()),
PackageParser.PARSE_COLLECT_CERTIFICATES);
} catch (PackageParserException e) {
throw PackageManagerException.from(e);
}
assertApkConsistentLocked("Existing base", existingBase);
// Inherit base if not overridden
if (mResolvedBaseFile == null) {
mResolvedBaseFile = new File(appInfo.getBaseCodePath());
mResolvedInheritedFiles.add(mResolvedBaseFile);
// Inherit the dex metadata if present.
final File baseDexMetadataFile =
DexMetadataHelper.findDexMetadataForFile(mResolvedBaseFile);
if (baseDexMetadataFile != null) {
mResolvedInheritedFiles.add(baseDexMetadataFile);
}
}
// Inherit splits if not overridden
if (!ArrayUtils.isEmpty(existing.splitNames)) {
for (int i = 0; i < existing.splitNames.length; i++) {
final String splitName = existing.splitNames[i];
final File splitFile = new File(existing.splitCodePaths[i]);
final boolean splitRemoved = removeSplitList.contains(splitName);
if (!stagedSplits.contains(splitName) && !splitRemoved) {
mResolvedInheritedFiles.add(splitFile);
// Inherit the dex metadata if present.
final File splitDexMetadataFile =
DexMetadataHelper.findDexMetadataForFile(splitFile);
if (splitDexMetadataFile != null) {
mResolvedInheritedFiles.add(splitDexMetadataFile);
}
}
}
}
// Inherit compiled oat directory.
final File packageInstallDir = (new File(appInfo.getBaseCodePath())).getParentFile();
mInheritedFilesBase = packageInstallDir;
final File oatDir = new File(packageInstallDir, "oat");
if (oatDir.exists()) {
final File[] archSubdirs = oatDir.listFiles();
// Keep track of all instruction sets we've seen compiled output for.
// If we're linking (and not copying) inherited files, we can recreate the
// instruction set hierarchy and link compiled output.
if (archSubdirs != null && archSubdirs.length > 0) {
final String[] instructionSets = InstructionSets.getAllDexCodeInstructionSets();
for (File archSubDir : archSubdirs) {
// Skip any directory that isn't an ISA subdir.
if (!ArrayUtils.contains(instructionSets, archSubDir.getName())) {
continue;
}
mResolvedInstructionSets.add(archSubDir.getName());
List<File> oatFiles = Arrays.asList(archSubDir.listFiles());
if (!oatFiles.isEmpty()) {
mResolvedInheritedFiles.addAll(oatFiles);
}
}
}
}
// Inherit native libraries for DONT_KILL sessions.
if (mayInheritNativeLibs() && removeSplitList.isEmpty()) {
File[] libDirs = new File[]{
new File(packageInstallDir, NativeLibraryHelper.LIB_DIR_NAME),
new File(packageInstallDir, NativeLibraryHelper.LIB64_DIR_NAME)};
for (File libDir : libDirs) {
if (!libDir.exists() || !libDir.isDirectory()) {
continue;
}
final List<File> libDirsToInherit = new LinkedList<>();
for (File archSubDir : libDir.listFiles()) {
if (!archSubDir.isDirectory()) {
continue;
}
String relLibPath;
try {
relLibPath = getRelativePath(archSubDir, packageInstallDir);
} catch (IOException e) {
Slog.e(TAG, "Skipping linking of native library directory!", e);
// shouldn't be possible, but let's avoid inheriting these to be safe
libDirsToInherit.clear();
break;
}
if (!mResolvedNativeLibPaths.contains(relLibPath)) {
mResolvedNativeLibPaths.add(relLibPath);
}
libDirsToInherit.addAll(Arrays.asList(archSubDir.listFiles()));
}
mResolvedInheritedFiles.addAll(libDirsToInherit);
}
}
}
}
@GuardedBy("mLock")
private void assertApkConsistentLocked(String tag, ApkLite apk)
throws PackageManagerException {
if (!mPackageName.equals(apk.packageName)) {
throw new PackageManagerException(INSTALL_FAILED_INVALID_APK, tag + " package "
+ apk.packageName + " inconsistent with " + mPackageName);
}
if (params.appPackageName != null && !params.appPackageName.equals(apk.packageName)) {
throw new PackageManagerException(INSTALL_FAILED_INVALID_APK, tag
+ " specified package " + params.appPackageName
+ " inconsistent with " + apk.packageName);
}
if (mVersionCode != apk.getLongVersionCode()) {
throw new PackageManagerException(INSTALL_FAILED_INVALID_APK, tag
+ " version code " + apk.versionCode + " inconsistent with "
+ mVersionCode);
}
if (!mSigningDetails.signaturesMatchExactly(apk.signingDetails)) {
throw new PackageManagerException(INSTALL_FAILED_INVALID_APK,
tag + " signatures are inconsistent");
}
}
/**
* Determine if creating hard links between source and destination is
* possible. That is, do they all live on the same underlying device.
*/
private boolean isLinkPossible(List<File> fromFiles, File toDir) {
try {
final StructStat toStat = Os.stat(toDir.getAbsolutePath());
for (File fromFile : fromFiles) {
final StructStat fromStat = Os.stat(fromFile.getAbsolutePath());
if (fromStat.st_dev != toStat.st_dev) {
return false;
}
}
} catch (ErrnoException e) {
Slog.w(TAG, "Failed to detect if linking possible: " + e);
return false;
}
return true;
}
/**
* @return the uid of the owner this session
*/
public int getInstallerUid() {
synchronized (mLock) {
return mInstallerUid;
}
}
private static String getRelativePath(File file, File base) throws IOException {
final String pathStr = file.getAbsolutePath();
final String baseStr = base.getAbsolutePath();
// Don't allow relative paths.
if (pathStr.contains("/.") ) {
throw new IOException("Invalid path (was relative) : " + pathStr);
}
if (pathStr.startsWith(baseStr)) {
return pathStr.substring(baseStr.length());
}
throw new IOException("File: " + pathStr + " outside base: " + baseStr);
}
private void createOatDirs(List<String> instructionSets, File fromDir)
throws PackageManagerException {
for (String instructionSet : instructionSets) {
try {
mPm.mInstaller.createOatDir(fromDir.getAbsolutePath(), instructionSet);
} catch (InstallerException e) {
throw PackageManagerException.from(e);
}
}
}
private void linkFiles(List<File> fromFiles, File toDir, File fromDir)
throws IOException {
for (File fromFile : fromFiles) {
final String relativePath = getRelativePath(fromFile, fromDir);
try {
mPm.mInstaller.linkFile(relativePath, fromDir.getAbsolutePath(),
toDir.getAbsolutePath());
} catch (InstallerException e) {
throw new IOException("failed linkOrCreateDir(" + relativePath + ", "
+ fromDir + ", " + toDir + ")", e);
}
}
Slog.d(TAG, "Linked " + fromFiles.size() + " files into " + toDir);
}
private static void copyFiles(List<File> fromFiles, File toDir) throws IOException {
// Remove any partial files from previous attempt
for (File file : toDir.listFiles()) {
if (file.getName().endsWith(".tmp")) {
file.delete();
}
}
for (File fromFile : fromFiles) {
final File tmpFile = File.createTempFile("inherit", ".tmp", toDir);
if (LOGD) Slog.d(TAG, "Copying " + fromFile + " to " + tmpFile);
if (!FileUtils.copyFile(fromFile, tmpFile)) {
throw new IOException("Failed to copy " + fromFile + " to " + tmpFile);
}
try {
Os.chmod(tmpFile.getAbsolutePath(), 0644);
} catch (ErrnoException e) {
throw new IOException("Failed to chmod " + tmpFile);
}
final File toFile = new File(toDir, fromFile.getName());
if (LOGD) Slog.d(TAG, "Renaming " + tmpFile + " to " + toFile);
if (!tmpFile.renameTo(toFile)) {
throw new IOException("Failed to rename " + tmpFile + " to " + toFile);
}
}
Slog.d(TAG, "Copied " + fromFiles.size() + " files into " + toDir);
}
private static void extractNativeLibraries(File packageDir, String abiOverride, boolean inherit)
throws PackageManagerException {
final File libDir = new File(packageDir, NativeLibraryHelper.LIB_DIR_NAME);
if (!inherit) {
// Start from a clean slate
NativeLibraryHelper.removeNativeBinariesFromDirLI(libDir, true);
}
NativeLibraryHelper.Handle handle = null;
try {
handle = NativeLibraryHelper.Handle.create(packageDir);
final int res = NativeLibraryHelper.copyNativeBinariesWithOverride(handle, libDir,
abiOverride);
if (res != PackageManager.INSTALL_SUCCEEDED) {
throw new PackageManagerException(res,
"Failed to extract native libraries, res=" + res);
}
} catch (IOException e) {
throw new PackageManagerException(INSTALL_FAILED_INTERNAL_ERROR,
"Failed to extract native libraries", e);
} finally {
IoUtils.closeQuietly(handle);
}
}
void setPermissionsResult(boolean accepted) {
if (!mSealed) {
throw new SecurityException("Must be sealed to accept permissions");
}
if (accepted) {
// Mark and kick off another install pass
synchronized (mLock) {
mPermissionsManuallyAccepted = true;
mHandler.obtainMessage(MSG_COMMIT).sendToTarget();
}
} else {
destroyInternal();
dispatchSessionFinished(INSTALL_FAILED_ABORTED, "User rejected permissions", null);
}
}
public void open() throws IOException {
if (mActiveCount.getAndIncrement() == 0) {
mCallback.onSessionActiveChanged(this, true);
}
boolean wasPrepared;
synchronized (mLock) {
wasPrepared = mPrepared;
if (!mPrepared) {
if (stageDir != null) {
prepareStageDir(stageDir);
} else {
throw new IllegalArgumentException("stageDir must be set");
}
mPrepared = true;
}
}
if (!wasPrepared) {
mCallback.onSessionPrepared(this);
}
}
@Override
public void close() {
closeInternal(true);
}
private void closeInternal(boolean checkCaller) {
int activeCount;
synchronized (mLock) {
if (checkCaller) {
assertCallerIsOwnerOrRootLocked();
}
activeCount = mActiveCount.decrementAndGet();
}
if (activeCount == 0) {
mCallback.onSessionActiveChanged(this, false);
}
}
@Override
public void abandon() {
synchronized (mLock) {
assertCallerIsOwnerOrRootLocked();
if (mRelinquished) {
Slog.d(TAG, "Ignoring abandon after commit relinquished control");
return;
}
destroyInternal();
}
dispatchSessionFinished(INSTALL_FAILED_ABORTED, "Session was abandoned", null);
}
private void dispatchSessionFinished(int returnCode, String msg, Bundle extras) {
final IPackageInstallObserver2 observer;
final String packageName;
synchronized (mLock) {
mFinalStatus = returnCode;
mFinalMessage = msg;
observer = mRemoteObserver;
packageName = mPackageName;
}
if (observer != null) {
// Execute observer.onPackageInstalled on different tread as we don't want callers
// inside the system server have to worry about catching the callbacks while they are
// calling into the session
final SomeArgs args = SomeArgs.obtain();
args.arg1 = packageName;
args.arg2 = msg;
args.arg3 = extras;
args.arg4 = observer;
args.argi1 = returnCode;
mHandler.obtainMessage(MSG_ON_PACKAGE_INSTALLED, args).sendToTarget();
}
final boolean success = (returnCode == PackageManager.INSTALL_SUCCEEDED);
// Send broadcast to default launcher only if it's a new install
final boolean isNewInstall = extras == null || !extras.getBoolean(Intent.EXTRA_REPLACING);
if (success && isNewInstall) {
mPm.sendSessionCommitBroadcast(generateInfo(), userId);
}
mCallback.onSessionFinished(this, success);
}
private void destroyInternal() {
synchronized (mLock) {
mSealed = true;
mDestroyed = true;
// Force shut down all bridges
for (RevocableFileDescriptor fd : mFds) {
fd.revoke();
}
for (FileBridge bridge : mBridges) {
bridge.forceClose();
}
}
if (stageDir != null) {
try {
mPm.mInstaller.rmPackageDir(stageDir.getAbsolutePath());
} catch (InstallerException ignored) {
}
}
}
void dump(IndentingPrintWriter pw) {
synchronized (mLock) {
dumpLocked(pw);
}
}
@GuardedBy("mLock")
private void dumpLocked(IndentingPrintWriter pw) {
pw.println("Session " + sessionId + ":");
pw.increaseIndent();
pw.printPair("userId", userId);
pw.printPair("mOriginalInstallerUid", mOriginalInstallerUid);
pw.printPair("mInstallerPackageName", mInstallerPackageName);
pw.printPair("mInstallerUid", mInstallerUid);
pw.printPair("createdMillis", createdMillis);
pw.printPair("stageDir", stageDir);
pw.printPair("stageCid", stageCid);
pw.println();
params.dump(pw);
pw.printPair("mClientProgress", mClientProgress);
pw.printPair("mProgress", mProgress);
pw.printPair("mSealed", mSealed);
pw.printPair("mPermissionsManuallyAccepted", mPermissionsManuallyAccepted);
pw.printPair("mRelinquished", mRelinquished);
pw.printPair("mDestroyed", mDestroyed);
pw.printPair("mFds", mFds.size());
pw.printPair("mBridges", mBridges.size());
pw.printPair("mFinalStatus", mFinalStatus);
pw.printPair("mFinalMessage", mFinalMessage);
pw.println();
pw.decreaseIndent();
}
private static void writeGrantedRuntimePermissionsLocked(XmlSerializer out,
String[] grantedRuntimePermissions) throws IOException {
if (grantedRuntimePermissions != null) {
for (String permission : grantedRuntimePermissions) {
out.startTag(null, TAG_GRANTED_RUNTIME_PERMISSION);
writeStringAttribute(out, ATTR_NAME, permission);
out.endTag(null, TAG_GRANTED_RUNTIME_PERMISSION);
}
}
}
private static File buildAppIconFile(int sessionId, @NonNull File sessionsDir) {
return new File(sessionsDir, "app_icon." + sessionId + ".png");
}
/**
* Write this session to a {@link XmlSerializer}.
*
* @param out Where to write the session to
* @param sessionsDir The directory containing the sessions
*/
void write(@NonNull XmlSerializer out, @NonNull File sessionsDir) throws IOException {
synchronized (mLock) {
if (mDestroyed) {
return;
}
out.startTag(null, TAG_SESSION);
writeIntAttribute(out, ATTR_SESSION_ID, sessionId);
writeIntAttribute(out, ATTR_USER_ID, userId);
writeStringAttribute(out, ATTR_INSTALLER_PACKAGE_NAME,
mInstallerPackageName);
writeIntAttribute(out, ATTR_INSTALLER_UID, mInstallerUid);
writeLongAttribute(out, ATTR_CREATED_MILLIS, createdMillis);
if (stageDir != null) {
writeStringAttribute(out, ATTR_SESSION_STAGE_DIR,
stageDir.getAbsolutePath());
}
if (stageCid != null) {
writeStringAttribute(out, ATTR_SESSION_STAGE_CID, stageCid);
}
writeBooleanAttribute(out, ATTR_PREPARED, isPrepared());
writeBooleanAttribute(out, ATTR_SEALED, isSealed());
writeIntAttribute(out, ATTR_MODE, params.mode);
writeIntAttribute(out, ATTR_INSTALL_FLAGS, params.installFlags);
writeIntAttribute(out, ATTR_INSTALL_LOCATION, params.installLocation);
writeLongAttribute(out, ATTR_SIZE_BYTES, params.sizeBytes);
writeStringAttribute(out, ATTR_APP_PACKAGE_NAME, params.appPackageName);
writeStringAttribute(out, ATTR_APP_LABEL, params.appLabel);
writeUriAttribute(out, ATTR_ORIGINATING_URI, params.originatingUri);
writeIntAttribute(out, ATTR_ORIGINATING_UID, params.originatingUid);
writeUriAttribute(out, ATTR_REFERRER_URI, params.referrerUri);
writeStringAttribute(out, ATTR_ABI_OVERRIDE, params.abiOverride);
writeStringAttribute(out, ATTR_VOLUME_UUID, params.volumeUuid);
writeIntAttribute(out, ATTR_INSTALL_REASON, params.installReason);
writeGrantedRuntimePermissionsLocked(out, params.grantedRuntimePermissions);
// Persist app icon if changed since last written
File appIconFile = buildAppIconFile(sessionId, sessionsDir);
if (params.appIcon == null && appIconFile.exists()) {
appIconFile.delete();
} else if (params.appIcon != null
&& appIconFile.lastModified() != params.appIconLastModified) {
if (LOGD) Slog.w(TAG, "Writing changed icon " + appIconFile);
FileOutputStream os = null;
try {
os = new FileOutputStream(appIconFile);
params.appIcon.compress(Bitmap.CompressFormat.PNG, 90, os);
} catch (IOException e) {
Slog.w(TAG, "Failed to write icon " + appIconFile + ": " + e.getMessage());
} finally {
IoUtils.closeQuietly(os);
}
params.appIconLastModified = appIconFile.lastModified();
}
}
out.endTag(null, TAG_SESSION);
}
private static String[] readGrantedRuntimePermissions(XmlPullParser in)
throws IOException, XmlPullParserException {
List<String> permissions = null;
final int outerDepth = in.getDepth();
int type;
while ((type = in.next()) != XmlPullParser.END_DOCUMENT
&& (type != XmlPullParser.END_TAG || in.getDepth() > outerDepth)) {
if (type == XmlPullParser.END_TAG || type == XmlPullParser.TEXT) {
continue;
}
if (TAG_GRANTED_RUNTIME_PERMISSION.equals(in.getName())) {
String permission = readStringAttribute(in, ATTR_NAME);
if (permissions == null) {
permissions = new ArrayList<>();
}
permissions.add(permission);
}
}
if (permissions == null) {
return null;
}
String[] permissionsArray = new String[permissions.size()];
permissions.toArray(permissionsArray);
return permissionsArray;
}
/**
* Read new session from a {@link XmlPullParser xml description} and create it.
*
* @param in The source of the description
* @param callback Callback the session uses to notify about changes of it's state
* @param context Context to be used by the session
* @param pm PackageManager to use by the session
* @param installerThread Thread to be used for callbacks of this session
* @param sessionsDir The directory the sessions are stored in
*
* @return The newly created session
*/
public static PackageInstallerSession readFromXml(@NonNull XmlPullParser in,
@NonNull PackageInstallerService.InternalCallback callback, @NonNull Context context,
@NonNull PackageManagerService pm, Looper installerThread, @NonNull File sessionsDir)
throws IOException, XmlPullParserException {
final int sessionId = readIntAttribute(in, ATTR_SESSION_ID);
final int userId = readIntAttribute(in, ATTR_USER_ID);
final String installerPackageName = readStringAttribute(in, ATTR_INSTALLER_PACKAGE_NAME);
final int installerUid = readIntAttribute(in, ATTR_INSTALLER_UID, pm.getPackageUid(
installerPackageName, PackageManager.MATCH_UNINSTALLED_PACKAGES, userId));
final long createdMillis = readLongAttribute(in, ATTR_CREATED_MILLIS);
final String stageDirRaw = readStringAttribute(in, ATTR_SESSION_STAGE_DIR);
final File stageDir = (stageDirRaw != null) ? new File(stageDirRaw) : null;
final String stageCid = readStringAttribute(in, ATTR_SESSION_STAGE_CID);
final boolean prepared = readBooleanAttribute(in, ATTR_PREPARED, true);
final boolean sealed = readBooleanAttribute(in, ATTR_SEALED);
final SessionParams params = new SessionParams(
SessionParams.MODE_INVALID);
params.mode = readIntAttribute(in, ATTR_MODE);
params.installFlags = readIntAttribute(in, ATTR_INSTALL_FLAGS);
params.installLocation = readIntAttribute(in, ATTR_INSTALL_LOCATION);
params.sizeBytes = readLongAttribute(in, ATTR_SIZE_BYTES);
params.appPackageName = readStringAttribute(in, ATTR_APP_PACKAGE_NAME);
params.appIcon = readBitmapAttribute(in, ATTR_APP_ICON);
params.appLabel = readStringAttribute(in, ATTR_APP_LABEL);
params.originatingUri = readUriAttribute(in, ATTR_ORIGINATING_URI);
params.originatingUid =
readIntAttribute(in, ATTR_ORIGINATING_UID, SessionParams.UID_UNKNOWN);
params.referrerUri = readUriAttribute(in, ATTR_REFERRER_URI);
params.abiOverride = readStringAttribute(in, ATTR_ABI_OVERRIDE);
params.volumeUuid = readStringAttribute(in, ATTR_VOLUME_UUID);
params.installReason = readIntAttribute(in, ATTR_INSTALL_REASON);
params.grantedRuntimePermissions = readGrantedRuntimePermissions(in);
final File appIconFile = buildAppIconFile(sessionId, sessionsDir);
if (appIconFile.exists()) {
params.appIcon = BitmapFactory.decodeFile(appIconFile.getAbsolutePath());
params.appIconLastModified = appIconFile.lastModified();
}
return new PackageInstallerSession(callback, context, pm,
installerThread, sessionId, userId, installerPackageName, installerUid,
params, createdMillis, stageDir, stageCid, prepared, sealed);
}
}