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Fix 2535700: Add support for enforcing password quality

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Change-Id: I908b4229d46061f3d450adec72b04276fe10afc1
This commit is contained in:
Jim Miller
2010-03-25 18:45:22 -07:00
parent a6a74e222a
commit af366a3ed6
5 changed files with 74 additions and 52 deletions
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75
src/com/android/settings/ChooseLockPassword.java
View File

@@ -16,20 +16,13 @@
package com.android.settings;
import java.util.regex.Matcher;
import java.util.regex.Pattern;
import com.android.internal.widget.LockPatternUtils;
import com.android.internal.widget.PasswordEntryKeyboardHelper;
import com.android.internal.widget.PasswordEntryKeyboardView;
import com.android.settings.ChooseLockPattern.LeftButtonMode;
import com.android.settings.ChooseLockPattern.RightButtonMode;
import com.android.settings.ChooseLockPattern.Stage;
import android.app.Activity;
import android.app.admin.DevicePolicyManager;
import android.content.Intent;
import android.content.pm.ActivityInfo;
import android.graphics.PixelFormat;
import android.inputmethodservice.KeyboardView;
import android.os.Bundle;
import android.os.Handler;
@@ -56,7 +49,7 @@ public class ChooseLockPassword extends Activity implements OnClickListener, OnE
private int mPasswordMinLength = 4;
private int mPasswordMaxLength = 16;
private LockPatternUtils mLockPatternUtils;
private int mRequestedMode = LockPatternUtils.MODE_PIN;
private int mRequestedQuality = DevicePolicyManager.PASSWORD_QUALITY_NUMERIC;
private ChooseLockSettingsHelper mChooseLockSettingsHelper;
private com.android.settings.ChooseLockPassword.Stage mUiStage = Stage.Introduction;
private TextView mHeaderText;
@@ -108,12 +101,12 @@ public class ChooseLockPassword extends Activity implements OnClickListener, OnE
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
mLockPatternUtils = new LockPatternUtils(this);
mRequestedMode = getIntent().getIntExtra(LockPatternUtils.PASSWORD_TYPE_KEY, mRequestedMode);
mRequestedQuality = getIntent().getIntExtra(LockPatternUtils.PASSWORD_TYPE_KEY, mRequestedQuality);
mPasswordMinLength = getIntent().getIntExtra(PASSWORD_MIN_KEY, mPasswordMinLength);
mPasswordMaxLength = getIntent().getIntExtra(PASSWORD_MAX_KEY, mPasswordMaxLength);
int minMode = mLockPatternUtils.getRequestedPasswordMode();
if (mRequestedMode < minMode) {
mRequestedMode = minMode;
int minMode = mLockPatternUtils.getRequestedPasswordQuality();
if (mRequestedQuality < minMode) {
mRequestedQuality = minMode;
}
int minLength = mLockPatternUtils.getRequestedMinimumPasswordLength();
if (mPasswordMinLength < minLength) {
@@ -143,7 +136,8 @@ public class ChooseLockPassword extends Activity implements OnClickListener, OnE
mPasswordEntry.setOnEditorActionListener(this);
mPasswordEntry.addTextChangedListener(this);
mIsAlphaMode = LockPatternUtils.MODE_PASSWORD == mRequestedMode;
mIsAlphaMode = DevicePolicyManager.PASSWORD_QUALITY_ALPHABETIC == mRequestedQuality
|| DevicePolicyManager.PASSWORD_QUALITY_ALPHANUMERIC == mRequestedQuality;
mKeyboardHelper = new PasswordEntryKeyboardHelper(this, mKeyboardView, mPasswordEntry);
mKeyboardHelper.setKeyboardMode(mIsAlphaMode ?
PasswordEntryKeyboardHelper.KEYBOARD_MODE_ALPHA
@@ -199,16 +193,16 @@ public class ChooseLockPassword extends Activity implements OnClickListener, OnE
/**
* Validates PIN and returns a message to display if PIN fails test.
* @param pin
* @return message id to display to user
* @param password the raw password the user typed in
* @return error message to show to user or null if password is OK
*/
private String validatePassword(String pin) {
if (pin.length() < mPasswordMinLength) {
private String validatePassword(String password) {
if (password.length() < mPasswordMinLength) {
return getString(mIsAlphaMode ?
R.string.lockpassword_password_too_short
: R.string.lockpassword_pin_too_short, mPasswordMinLength);
}
if (pin.length() > mPasswordMaxLength) {
if (password.length() > mPasswordMaxLength) {
return getString(mIsAlphaMode ?
R.string.lockpassword_password_too_long
: R.string.lockpassword_pin_too_long, mPasswordMaxLength);
@@ -216,8 +210,8 @@ public class ChooseLockPassword extends Activity implements OnClickListener, OnE
boolean hasAlpha = false;
boolean hasDigit = false;
boolean hasSymbol = false;
for (int i = 0; i < pin.length(); i++) {
char c = pin.charAt(i);
for (int i = 0; i < password.length(); i++) {
char c = password.charAt(i);
// allow non white space Latin-1 characters only
if (c <= 32 || c > 127) {
return getString(R.string.lockpassword_illegal_character);
@@ -230,11 +224,25 @@ public class ChooseLockPassword extends Activity implements OnClickListener, OnE
hasSymbol = true;
}
}
if (LockPatternUtils.MODE_PIN == mRequestedMode && (hasAlpha | hasSymbol)) {
return getString(R.string.lockpassword_pin_contains_non_digits);
} else if (LockPatternUtils.MODE_PASSWORD == mRequestedMode && !hasAlpha) {
// require at least 1 alpha character
return getString(R.string.lockpassword_password_requires_alpha);
if (DevicePolicyManager.PASSWORD_QUALITY_NUMERIC == mRequestedQuality
&& (hasAlpha | hasSymbol)) {
// This shouldn't be possible unless user finds some way to bring up soft keyboard
return getString(R.string.lockpassword_pin_contains_non_digits);
} else {
final boolean alphabetic = DevicePolicyManager.PASSWORD_QUALITY_ALPHABETIC
== mRequestedQuality;
final boolean alphanumeric = DevicePolicyManager.PASSWORD_QUALITY_ALPHANUMERIC
== mRequestedQuality;
final boolean symbolic = false; // not yet
if ((alphabetic || alphanumeric) && !hasAlpha) {
return getString(R.string.lockpassword_password_requires_alpha);
}
if (alphanumeric && !hasDigit) {
return getString(R.string.lockpassword_password_requires_digit);
}
if (symbolic && !hasSymbol) {
return getString(R.string.lockpassword_password_requires_symbol);
}
}
return null;
}
@@ -255,7 +263,7 @@ public class ChooseLockPassword extends Activity implements OnClickListener, OnE
} else if (mUiStage == Stage.NeedToConfirm) {
if (mFirstPin.equals(pin)) {
mLockPatternUtils.clearLock();
mLockPatternUtils.saveLockPassword(pin, mRequestedMode);
mLockPatternUtils.saveLockPassword(pin, mRequestedQuality);
finish();
} else {
updateStage(Stage.ConfirmWrong);
@@ -304,7 +312,8 @@ public class ChooseLockPassword extends Activity implements OnClickListener, OnE
* Update the hint based on current Stage and length of password entry
*/
private void updateUi() {
final int length = mPasswordEntry.getText().toString().length();
String password = mPasswordEntry.getText().toString();
final int length = password.length();
if (mUiStage == Stage.Introduction && length > 0) {
if (length < mPasswordMinLength) {
String msg = getString(mIsAlphaMode ? R.string.lockpassword_password_too_short
@@ -312,8 +321,14 @@ public class ChooseLockPassword extends Activity implements OnClickListener, OnE
mHeaderText.setText(msg);
mNextButton.setEnabled(false);
} else {
mHeaderText.setText(R.string.lockpassword_press_continue);
mNextButton.setEnabled(true);
String error = validatePassword(password);
if (error != null) {
mHeaderText.setText(error);
mNextButton.setEnabled(false);
} else {
mHeaderText.setText(R.string.lockpassword_press_continue);
mNextButton.setEnabled(true);
}
}
} else {
mHeaderText.setText(mIsAlphaMode ? mUiStage.alphaHint : mUiStage.numericHint);