user設備在開發者選項裏面打開USB調試後,在pc執行adb命令,報錯:
error: device unauthorized.
This adb server's $ADB_VENDOR_KEYS is not set
Try 'adb kill-server' if that seems wrong.
Otherwise check for a confirmation dialog on your device.
goole搜索一通,說是應該有授權Dialog,但是我在設備上根本沒有彈出,
so, read the fucking source code !
framework/base/services/usb/java/com/android/server/usb/UsbDeviceManager.java
boolean secureAdbEnabled = SystemProperties.getBoolean("ro.adb.secure", false);
boolean dataEncrypted = "1".equals(SystemProperties.get("vold.decrypt"));
if (secureAdbEnabled && !dataEncrypted) {
mDebuggingManager = new UsbDebuggingManager(context);
}
public class UsbDebuggingManager {
private static final String TAG = "UsbDebuggingManager";
private static final boolean DEBUG = false;
private final String ADBD_SOCKET = "adbd";
private final String ADB_DIRECTORY = "misc/adb";
private final String ADB_KEYS_FILE = "adb_keys";
private final int BUFFER_SIZE = 4096;
private final Context mContext;
private final Handler mHandler;
private UsbDebuggingThread mThread;
private boolean mAdbEnabled = false;
private String mFingerprints;
public UsbDebuggingManager(Context context) {
mHandler = new UsbDebuggingHandler(FgThread.get().getLooper());
mContext = context;
}
class UsbDebuggingThread extends Thread {
private boolean mStopped;
private LocalSocket mSocket;
private OutputStream mOutputStream;
private InputStream mInputStream;
UsbDebuggingThread() {
super(TAG);
}
@Override
public void run() {
if (DEBUG) Slog.d(TAG, "Entering thread");
while (true) {
synchronized (this) {
if (mStopped) {
if (DEBUG) Slog.d(TAG, "Exiting thread");
return;
}
try {
openSocketLocked();
} catch (Exception e) {
/* Don't loop too fast if adbd dies, before init restarts it */
SystemClock.sleep(1000);
}
}
try {
listenToSocket();
} catch (Exception e) {
/* Don't loop too fast if adbd dies, before init restarts it */
SystemClock.sleep(1000);
}
}
}
private void openSocketLocked() throws IOException {
try {
LocalSocketAddress address = new LocalSocketAddress(ADBD_SOCKET,
LocalSocketAddress.Namespace.RESERVED);
mInputStream = null;
if (DEBUG) Slog.d(TAG, "Creating socket");
mSocket = new LocalSocket();
mSocket.connect(address);
mOutputStream = mSocket.getOutputStream();
mInputStream = mSocket.getInputStream();
} catch (IOException ioe) {
closeSocketLocked();
throw ioe;
}
}
private void listenToSocket() throws IOException {
try {
byte[] buffer = new byte[BUFFER_SIZE];
while (true) {
int count = mInputStream.read(buffer);
if (count < 0) {
break;
}
if (buffer[0] == 'P' && buffer[1] == 'K') {
String key = new String(Arrays.copyOfRange(buffer, 2, count));
Slog.d(TAG, "Received public key: " + key);
Message msg = mHandler.obtainMessage(UsbDebuggingHandler.MESSAGE_ADB_CONFIRM);
msg.obj = key;
mHandler.sendMessage(msg);
} else {
Slog.e(TAG, "Wrong message: "
+ (new String(Arrays.copyOfRange(buffer, 0, 2))));
break;
}
}
} finally {
synchronized (this) {
closeSocketLocked();
}
}
}
private void closeSocketLocked() {
if (DEBUG) Slog.d(TAG, "Closing socket");
try {
if (mOutputStream != null) {
mOutputStream.close();
mOutputStream = null;
}
} catch (IOException e) {
Slog.e(TAG, "Failed closing output stream: " + e);
}
try {
if (mSocket != null) {
mSocket.close();
mSocket = null;
}
} catch (IOException ex) {
Slog.e(TAG, "Failed closing socket: " + ex);
}
}
/** Call to stop listening on the socket and exit the thread. */
void stopListening() {
synchronized (this) {
mStopped = true;
closeSocketLocked();
}
}
void sendResponse(String msg) {
synchronized (this) {
if (!mStopped && mOutputStream != null) {
try {
mOutputStream.write(msg.getBytes());
}
catch (IOException ex) {
Slog.e(TAG, "Failed to write response:", ex);
}
}
}
}
}
class UsbDebuggingHandler extends Handler {
private static final int MESSAGE_ADB_ENABLED = 1;
private static final int MESSAGE_ADB_DISABLED = 2;
private static final int MESSAGE_ADB_ALLOW = 3;
private static final int MESSAGE_ADB_DENY = 4;
private static final int MESSAGE_ADB_CONFIRM = 5;
private static final int MESSAGE_ADB_CLEAR = 6;
public UsbDebuggingHandler(Looper looper) {
super(looper);
}
public void handleMessage(Message msg) {
switch (msg.what) {
case MESSAGE_ADB_ENABLED:
if (mAdbEnabled)
break;
mAdbEnabled = true;
mThread = new UsbDebuggingThread();
mThread.start();
break;
case MESSAGE_ADB_DISABLED:
if (!mAdbEnabled)
break;
mAdbEnabled = false;
if (mThread != null) {
mThread.stopListening();
mThread = null;
}
break;
case MESSAGE_ADB_ALLOW: {
String key = (String)msg.obj;
String fingerprints = getFingerprints(key);
if (!fingerprints.equals(mFingerprints)) {
Slog.e(TAG, "Fingerprints do not match. Got "
+ fingerprints + ", expected " + mFingerprints);
break;
}
if (msg.arg1 == 1) {
writeKey(key);
}
if (mThread != null) {
mThread.sendResponse("OK");
}
break;
}
case MESSAGE_ADB_DENY:
if (mThread != null) {
mThread.sendResponse("NO");
}
break;
case MESSAGE_ADB_CONFIRM: {
if ("trigger_restart_min_framework".equals(
SystemProperties.get("vold.decrypt"))) {
Slog.d(TAG, "Deferring adb confirmation until after vold decrypt");
if (mThread != null) {
mThread.sendResponse("NO");
}
break;
}
String key = (String)msg.obj;
String fingerprints = getFingerprints(key);
if ("".equals(fingerprints)) {
if (mThread != null) {
mThread.sendResponse("NO");
}
break;
}
mFingerprints = fingerprints;
startConfirmation(key, mFingerprints);
break;
}
case MESSAGE_ADB_CLEAR:
deleteKeyFile();
break;
}
}
}
private String getFingerprints(String key) {
String hex = "0123456789ABCDEF";
StringBuilder sb = new StringBuilder();
MessageDigest digester;
if (key == null) {
return "";
}
try {
digester = MessageDigest.getInstance("MD5");
} catch (Exception ex) {
Slog.e(TAG, "Error getting digester", ex);
return "";
}
byte[] base64_data = key.split("\\s+")[0].getBytes();
byte[] digest;
try {
digest = digester.digest(Base64.decode(base64_data, Base64.DEFAULT));
} catch (IllegalArgumentException e) {
Slog.e(TAG, "error doing base64 decoding", e);
return "";
}
for (int i = 0; i < digest.length; i++) {
sb.append(hex.charAt((digest[i] >> 4) & 0xf));
sb.append(hex.charAt(digest[i] & 0xf));
if (i < digest.length - 1)
sb.append(":");
}
return sb.toString();
}
private void startConfirmation(String key, String fingerprints) {
int currentUserId = ActivityManager.getCurrentUser();
UserHandle userHandle =
UserManager.get(mContext).getUserInfo(currentUserId).getUserHandle();
String componentString;
if (currentUserId == UserHandle.USER_OWNER) {
componentString = Resources.getSystem().getString(
com.android.internal.R.string.config_customAdbPublicKeyConfirmationComponent);
} else {
// If the current foreground user is not the primary user we send a different
// notification specific to secondary users.
componentString = Resources.getSystem().getString(
R.string.config_customAdbPublicKeyConfirmationSecondaryUserComponent);
}
ComponentName componentName = ComponentName.unflattenFromString(componentString);
if (startConfirmationActivity(componentName, userHandle, key, fingerprints)
|| startConfirmationService(componentName, userHandle, key, fingerprints)) {
return;
}
Slog.e(TAG, "unable to start customAdbPublicKeyConfirmation[SecondaryUser]Component "
+ componentString + " as an Activity or a Service");
}
/**
* @returns true if the componentName led to an Activity that was started.
*/
private boolean startConfirmationActivity(ComponentName componentName, UserHandle userHandle,
String key, String fingerprints) {
PackageManager packageManager = mContext.getPackageManager();
Intent intent = createConfirmationIntent(componentName, key, fingerprints);
intent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
if (packageManager.resolveActivity(intent, PackageManager.MATCH_DEFAULT_ONLY) != null) {
try {
mContext.startActivityAsUser(intent, userHandle);
return true;
} catch (ActivityNotFoundException e) {
Slog.e(TAG, "unable to start adb whitelist activity: " + componentName, e);
}
}
return false;
}
/**
* @returns true if the componentName led to a Service that was started.
*/
private boolean startConfirmationService(ComponentName componentName, UserHandle userHandle,
String key, String fingerprints) {
Intent intent = createConfirmationIntent(componentName, key, fingerprints);
try {
if (mContext.startServiceAsUser(intent, userHandle) != null) {
return true;
}
} catch (SecurityException e) {
Slog.e(TAG, "unable to start adb whitelist service: " + componentName, e);
}
return false;
}
private Intent createConfirmationIntent(ComponentName componentName, String key,
String fingerprints) {
Intent intent = new Intent();
intent.setClassName(componentName.getPackageName(), componentName.getClassName());
intent.putExtra("key", key);
intent.putExtra("fingerprints", fingerprints);
return intent;
}
private File getUserKeyFile() {
File dataDir = Environment.getDataDirectory();
File adbDir = new File(dataDir, ADB_DIRECTORY);
if (!adbDir.exists()) {
Slog.e(TAG, "ADB data directory does not exist");
return null;
}
return new File(adbDir, ADB_KEYS_FILE);
}
private void writeKey(String key) {
try {
File keyFile = getUserKeyFile();
if (keyFile == null) {
return;
}
if (!keyFile.exists()) {
keyFile.createNewFile();
FileUtils.setPermissions(keyFile.toString(),
FileUtils.S_IRUSR | FileUtils.S_IWUSR |
FileUtils.S_IRGRP, -1, -1);
}
FileOutputStream fo = new FileOutputStream(keyFile, true);
fo.write(key.getBytes());
fo.write('\n');
fo.close();
}
catch (IOException ex) {
Slog.e(TAG, "Error writing key:" + ex);
}
}
private void deleteKeyFile() {
File keyFile = getUserKeyFile();
if (keyFile != null) {
keyFile.delete();
}
}
public void setAdbEnabled(boolean enabled) {
mHandler.sendEmptyMessage(enabled ? UsbDebuggingHandler.MESSAGE_ADB_ENABLED
: UsbDebuggingHandler.MESSAGE_ADB_DISABLED);
}
public void allowUsbDebugging(boolean alwaysAllow, String publicKey) {
Message msg = mHandler.obtainMessage(UsbDebuggingHandler.MESSAGE_ADB_ALLOW);
msg.arg1 = alwaysAllow ? 1 : 0;
msg.obj = publicKey;
mHandler.sendMessage(msg);
}
public void denyUsbDebugging() {
mHandler.sendEmptyMessage(UsbDebuggingHandler.MESSAGE_ADB_DENY);
}
public void clearUsbDebuggingKeys() {
mHandler.sendEmptyMessage(UsbDebuggingHandler.MESSAGE_ADB_CLEAR);
}
public void dump(IndentingPrintWriter pw) {
pw.println("USB Debugging State:");
pw.println(" Connected to adbd: " + (mThread != null));
pw.println(" Last key received: " + mFingerprints);
pw.println(" User keys:");
try {
pw.println(FileUtils.readTextFile(new File("/data/misc/adb/adb_keys"), 0, null));
} catch (IOException e) {
pw.println("IOException: " + e);
}
pw.println(" System keys:");
try {
pw.println(FileUtils.readTextFile(new File("/adb_keys"), 0, null));
} catch (IOException e) {
pw.println("IOException: " + e);
}
}
UsbDebuggingManager對象就是彈出adb debug授權窗口的一整套流程的入口,果斷連接串口,執行getprop命令,發現ro.adb.secure=0,ok,找到配置的地方,改成1應該就ok了。在device下面搜到是在system.prop裏面配置的,改成1,編譯測試下,直接把boot.img和system.img刷了,測試ok。