Victor Chang | d7d0e1b | 2016-04-05 20:01:24 +0100 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (C) 2016 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 | package com.android.settings; |
| 17 | |
| 18 | import android.annotation.NonNull; |
| 19 | import android.app.Activity; |
| 20 | import android.app.AlertDialog; |
| 21 | import android.app.admin.DevicePolicyManager; |
| 22 | import android.content.DialogInterface; |
Victor Chang | f2e02db | 2016-04-21 15:45:59 +0100 | [diff] [blame] | 23 | import android.content.pm.UserInfo; |
Victor Chang | d7d0e1b | 2016-04-05 20:01:24 +0100 | [diff] [blame] | 24 | import android.net.http.SslCertificate; |
| 25 | import android.os.UserHandle; |
| 26 | import android.os.UserManager; |
| 27 | import android.view.View; |
| 28 | import android.view.animation.AnimationUtils; |
| 29 | import android.widget.AdapterView; |
| 30 | import android.widget.ArrayAdapter; |
| 31 | import android.widget.Button; |
| 32 | import android.widget.LinearLayout; |
| 33 | import android.widget.Spinner; |
| 34 | |
Victor Chang | f2e02db | 2016-04-21 15:45:59 +0100 | [diff] [blame] | 35 | import com.android.internal.widget.LockPatternUtils; |
Victor Chang | d7d0e1b | 2016-04-05 20:01:24 +0100 | [diff] [blame] | 36 | import com.android.settings.TrustedCredentialsSettings.CertHolder; |
Victor Chang | 71d1fed | 2016-05-31 22:07:20 +0100 | [diff] [blame] | 37 | import com.android.settingslib.RestrictedLockUtils; |
Victor Chang | d7d0e1b | 2016-04-05 20:01:24 +0100 | [diff] [blame] | 38 | |
| 39 | import java.security.cert.X509Certificate; |
| 40 | import java.util.ArrayList; |
| 41 | import java.util.List; |
Victor Chang | 45ca906 | 2016-05-23 19:47:38 +0100 | [diff] [blame] | 42 | import java.util.function.IntConsumer; |
Victor Chang | d7d0e1b | 2016-04-05 20:01:24 +0100 | [diff] [blame] | 43 | |
| 44 | class TrustedCredentialsDialogBuilder extends AlertDialog.Builder { |
| 45 | public interface DelegateInterface { |
| 46 | List<X509Certificate> getX509CertsFromCertHolder(CertHolder certHolder); |
| 47 | void removeOrInstallCert(CertHolder certHolder); |
Victor Chang | 45ca906 | 2016-05-23 19:47:38 +0100 | [diff] [blame] | 48 | boolean startConfirmCredentialIfNotConfirmed(int userId, |
| 49 | IntConsumer onCredentialConfirmedListener); |
Victor Chang | d7d0e1b | 2016-04-05 20:01:24 +0100 | [diff] [blame] | 50 | } |
| 51 | |
| 52 | private final DialogEventHandler mDialogEventHandler; |
| 53 | |
| 54 | public TrustedCredentialsDialogBuilder(Activity activity, DelegateInterface delegate) { |
| 55 | super(activity); |
| 56 | mDialogEventHandler = new DialogEventHandler(activity, delegate); |
| 57 | |
| 58 | initDefaultBuilderParams(); |
| 59 | } |
| 60 | |
| 61 | public TrustedCredentialsDialogBuilder setCertHolder(CertHolder certHolder) { |
| 62 | return setCertHolders(certHolder == null ? new CertHolder[0] |
| 63 | : new CertHolder[]{certHolder}); |
| 64 | } |
| 65 | |
| 66 | public TrustedCredentialsDialogBuilder setCertHolders(@NonNull CertHolder[] certHolders) { |
| 67 | mDialogEventHandler.setCertHolders(certHolders); |
| 68 | return this; |
| 69 | } |
| 70 | |
| 71 | @Override |
| 72 | public AlertDialog create() { |
| 73 | AlertDialog dialog = super.create(); |
| 74 | dialog.setOnShowListener(mDialogEventHandler); |
| 75 | mDialogEventHandler.setDialog(dialog); |
| 76 | return dialog; |
| 77 | } |
| 78 | |
| 79 | private void initDefaultBuilderParams() { |
| 80 | setTitle(com.android.internal.R.string.ssl_certificate); |
| 81 | setView(mDialogEventHandler.mRootContainer); |
| 82 | |
| 83 | // Enable buttons here. The actual labels and listeners are configured in nextOrDismiss |
| 84 | setPositiveButton(R.string.trusted_credentials_trust_label, null); |
| 85 | setNegativeButton(android.R.string.ok, null); |
| 86 | } |
| 87 | |
| 88 | private static class DialogEventHandler implements DialogInterface.OnShowListener, |
| 89 | View.OnClickListener { |
| 90 | private static final long OUT_DURATION_MS = 300; |
| 91 | private static final long IN_DURATION_MS = 200; |
| 92 | |
| 93 | private final Activity mActivity; |
| 94 | private final DevicePolicyManager mDpm; |
| 95 | private final UserManager mUserManager; |
| 96 | private final DelegateInterface mDelegate; |
| 97 | private final LinearLayout mRootContainer; |
| 98 | |
| 99 | private int mCurrentCertIndex = -1; |
| 100 | private AlertDialog mDialog; |
| 101 | private Button mPositiveButton; |
| 102 | private Button mNegativeButton; |
| 103 | private boolean mNeedsApproval; |
| 104 | private CertHolder[] mCertHolders = new CertHolder[0]; |
| 105 | private View mCurrentCertLayout = null; |
| 106 | |
| 107 | public DialogEventHandler(Activity activity, DelegateInterface delegate) { |
| 108 | mActivity = activity; |
| 109 | mDpm = activity.getSystemService(DevicePolicyManager.class); |
| 110 | mUserManager = activity.getSystemService(UserManager.class); |
| 111 | mDelegate = delegate; |
| 112 | |
| 113 | mRootContainer = new LinearLayout(mActivity); |
| 114 | mRootContainer.setOrientation(LinearLayout.VERTICAL); |
| 115 | } |
| 116 | |
| 117 | public void setDialog(AlertDialog dialog) { |
| 118 | mDialog = dialog; |
| 119 | } |
| 120 | |
| 121 | public void setCertHolders(CertHolder[] certHolder) { |
| 122 | mCertHolders = certHolder; |
| 123 | } |
| 124 | |
| 125 | @Override |
| 126 | public void onShow(DialogInterface dialogInterface) { |
| 127 | // Config the display content only when the dialog is shown because the |
| 128 | // positive/negative buttons don't exist until the dialog is shown |
| 129 | nextOrDismiss(); |
| 130 | } |
| 131 | |
| 132 | @Override |
| 133 | public void onClick(View view) { |
| 134 | if (view == mPositiveButton) { |
| 135 | if (mNeedsApproval) { |
| 136 | onClickTrust(); |
| 137 | } else { |
| 138 | onClickOk(); |
| 139 | } |
| 140 | } else if (view == mNegativeButton) { |
Robin Lee | bed8559 | 2016-09-01 18:35:00 +0100 | [diff] [blame] | 141 | onClickEnableOrDisable(); |
Victor Chang | d7d0e1b | 2016-04-05 20:01:24 +0100 | [diff] [blame] | 142 | } |
| 143 | } |
| 144 | |
| 145 | private void onClickOk() { |
| 146 | nextOrDismiss(); |
| 147 | } |
| 148 | |
| 149 | private void onClickTrust() { |
| 150 | CertHolder certHolder = getCurrentCertInfo(); |
Victor Chang | 45ca906 | 2016-05-23 19:47:38 +0100 | [diff] [blame] | 151 | if (!mDelegate.startConfirmCredentialIfNotConfirmed(certHolder.getUserId(), |
| 152 | this::onCredentialConfirmed)) { |
Victor Chang | 01f4dbc | 2016-05-09 16:13:10 +0100 | [diff] [blame] | 153 | mDpm.approveCaCert(certHolder.getAlias(), certHolder.getUserId(), true); |
| 154 | nextOrDismiss(); |
| 155 | } |
Victor Chang | d7d0e1b | 2016-04-05 20:01:24 +0100 | [diff] [blame] | 156 | } |
| 157 | |
Robin Lee | bed8559 | 2016-09-01 18:35:00 +0100 | [diff] [blame] | 158 | private void onClickEnableOrDisable() { |
Victor Chang | d7d0e1b | 2016-04-05 20:01:24 +0100 | [diff] [blame] | 159 | final CertHolder certHolder = getCurrentCertInfo(); |
Robin Lee | bed8559 | 2016-09-01 18:35:00 +0100 | [diff] [blame] | 160 | DialogInterface.OnClickListener onConfirm = new DialogInterface.OnClickListener() { |
| 161 | @Override |
| 162 | public void onClick(DialogInterface dialog, int id) { |
| 163 | mDelegate.removeOrInstallCert(certHolder); |
| 164 | nextOrDismiss(); |
| 165 | } |
| 166 | }; |
| 167 | if (certHolder.isSystemCert()) { |
| 168 | // Removing system certs is reversible, so skip confirmation. |
| 169 | onConfirm.onClick(null, -1); |
| 170 | } else { |
| 171 | new AlertDialog.Builder(mActivity) |
| 172 | .setMessage(R.string.trusted_credentials_remove_confirmation) |
| 173 | .setPositiveButton(android.R.string.yes, onConfirm) |
| 174 | .setNegativeButton(android.R.string.no, null) |
| 175 | .show(); |
| 176 | |
| 177 | } |
Victor Chang | d7d0e1b | 2016-04-05 20:01:24 +0100 | [diff] [blame] | 178 | } |
| 179 | |
Victor Chang | 45ca906 | 2016-05-23 19:47:38 +0100 | [diff] [blame] | 180 | private void onCredentialConfirmed(int userId) { |
| 181 | if (mDialog.isShowing() && mNeedsApproval && getCurrentCertInfo() != null |
| 182 | && getCurrentCertInfo().getUserId() == userId) { |
| 183 | // Treat it as user just clicks "trust" for this cert |
| 184 | onClickTrust(); |
| 185 | } |
| 186 | } |
| 187 | |
Victor Chang | d7d0e1b | 2016-04-05 20:01:24 +0100 | [diff] [blame] | 188 | private CertHolder getCurrentCertInfo() { |
| 189 | return mCurrentCertIndex < mCertHolders.length ? mCertHolders[mCurrentCertIndex] : null; |
| 190 | } |
| 191 | |
| 192 | private void nextOrDismiss() { |
| 193 | mCurrentCertIndex++; |
| 194 | // find next non-null cert or dismiss |
| 195 | while (mCurrentCertIndex < mCertHolders.length && getCurrentCertInfo() == null) { |
| 196 | mCurrentCertIndex++; |
| 197 | } |
| 198 | |
| 199 | if (mCurrentCertIndex >= mCertHolders.length) { |
| 200 | mDialog.dismiss(); |
| 201 | return; |
| 202 | } |
| 203 | |
| 204 | updateViewContainer(); |
| 205 | updatePositiveButton(); |
| 206 | updateNegativeButton(); |
| 207 | } |
| 208 | |
Victor Chang | f2e02db | 2016-04-21 15:45:59 +0100 | [diff] [blame] | 209 | /** |
| 210 | * @return true if current user or parent user is guarded by screenlock |
| 211 | */ |
| 212 | private boolean isUserSecure(int userId) { |
| 213 | final LockPatternUtils lockPatternUtils = new LockPatternUtils(mActivity); |
| 214 | if (lockPatternUtils.isSecure(userId)) { |
| 215 | return true; |
| 216 | } |
| 217 | UserInfo parentUser = mUserManager.getProfileParent(userId); |
| 218 | if (parentUser == null) { |
| 219 | return false; |
| 220 | } |
| 221 | return lockPatternUtils.isSecure(parentUser.id); |
| 222 | } |
| 223 | |
Victor Chang | d7d0e1b | 2016-04-05 20:01:24 +0100 | [diff] [blame] | 224 | private void updatePositiveButton() { |
| 225 | final CertHolder certHolder = getCurrentCertInfo(); |
Victor Chang | f2e02db | 2016-04-21 15:45:59 +0100 | [diff] [blame] | 226 | mNeedsApproval = !certHolder.isSystemCert() |
| 227 | && isUserSecure(certHolder.getUserId()) |
| 228 | && !mDpm.isCaCertApproved(certHolder.getAlias(), certHolder.getUserId()); |
Victor Chang | d7d0e1b | 2016-04-05 20:01:24 +0100 | [diff] [blame] | 229 | |
Victor Chang | 71d1fed | 2016-05-31 22:07:20 +0100 | [diff] [blame] | 230 | final boolean isProfileOrDeviceOwner = RestrictedLockUtils.getProfileOrDeviceOwner( |
| 231 | mActivity, certHolder.getUserId()) != null; |
| 232 | |
| 233 | // Show trust button only when it requires consumer user (non-PO/DO) to approve |
| 234 | CharSequence displayText = mActivity.getText(!isProfileOrDeviceOwner && mNeedsApproval |
Victor Chang | d7d0e1b | 2016-04-05 20:01:24 +0100 | [diff] [blame] | 235 | ? R.string.trusted_credentials_trust_label |
| 236 | : android.R.string.ok); |
| 237 | mPositiveButton = updateButton(DialogInterface.BUTTON_POSITIVE, displayText); |
| 238 | } |
| 239 | |
| 240 | private void updateNegativeButton() { |
| 241 | final CertHolder certHolder = getCurrentCertInfo(); |
| 242 | final boolean showRemoveButton = !mUserManager.hasUserRestriction( |
| 243 | UserManager.DISALLOW_CONFIG_CREDENTIALS, |
| 244 | new UserHandle(certHolder.getUserId())); |
| 245 | CharSequence displayText = mActivity.getText(getButtonLabel(certHolder)); |
| 246 | mNegativeButton = updateButton(DialogInterface.BUTTON_NEGATIVE, displayText); |
| 247 | mNegativeButton.setVisibility(showRemoveButton ? View.VISIBLE : View.GONE); |
| 248 | } |
| 249 | |
| 250 | /** |
| 251 | * mDialog.setButton doesn't trigger text refresh since mDialog has been shown. |
| 252 | * It's invoked only in case mDialog is refreshed. |
| 253 | * setOnClickListener is invoked to avoid dismiss dialog onClick |
| 254 | */ |
| 255 | private Button updateButton(int buttonType, CharSequence displayText) { |
| 256 | mDialog.setButton(buttonType, displayText, (DialogInterface.OnClickListener) null); |
| 257 | Button button = mDialog.getButton(buttonType); |
| 258 | button.setText(displayText); |
| 259 | button.setOnClickListener(this); |
| 260 | return button; |
| 261 | } |
| 262 | |
| 263 | |
| 264 | private void updateViewContainer() { |
| 265 | CertHolder certHolder = getCurrentCertInfo(); |
| 266 | LinearLayout nextCertLayout = getCertLayout(certHolder); |
| 267 | |
| 268 | // Displaying first cert doesn't require animation |
| 269 | if (mCurrentCertLayout == null) { |
| 270 | mCurrentCertLayout = nextCertLayout; |
| 271 | mRootContainer.addView(mCurrentCertLayout); |
| 272 | } else { |
| 273 | animateViewTransition(nextCertLayout); |
| 274 | } |
| 275 | } |
| 276 | |
| 277 | private LinearLayout getCertLayout(final CertHolder certHolder) { |
| 278 | final ArrayList<View> views = new ArrayList<View>(); |
| 279 | final ArrayList<String> titles = new ArrayList<String>(); |
| 280 | List<X509Certificate> certificates = mDelegate.getX509CertsFromCertHolder(certHolder); |
| 281 | if (certificates != null) { |
| 282 | for (X509Certificate certificate : certificates) { |
| 283 | SslCertificate sslCert = new SslCertificate(certificate); |
| 284 | views.add(sslCert.inflateCertificateView(mActivity)); |
| 285 | titles.add(sslCert.getIssuedTo().getCName()); |
| 286 | } |
| 287 | } |
| 288 | |
| 289 | ArrayAdapter<String> arrayAdapter = new ArrayAdapter<String>(mActivity, |
| 290 | android.R.layout.simple_spinner_item, |
| 291 | titles); |
| 292 | arrayAdapter.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item); |
| 293 | Spinner spinner = new Spinner(mActivity); |
| 294 | spinner.setAdapter(arrayAdapter); |
| 295 | spinner.setOnItemSelectedListener(new AdapterView.OnItemSelectedListener() { |
| 296 | @Override |
| 297 | public void onItemSelected(AdapterView<?> parent, View view, int position, |
| 298 | long id) { |
| 299 | for (int i = 0; i < views.size(); i++) { |
| 300 | views.get(i).setVisibility(i == position ? View.VISIBLE : View.GONE); |
| 301 | } |
| 302 | } |
| 303 | |
| 304 | @Override |
| 305 | public void onNothingSelected(AdapterView<?> parent) { |
| 306 | } |
| 307 | }); |
| 308 | |
| 309 | LinearLayout certLayout = new LinearLayout(mActivity); |
| 310 | certLayout.setOrientation(LinearLayout.VERTICAL); |
| 311 | certLayout.addView(spinner); |
| 312 | for (int i = 0; i < views.size(); ++i) { |
| 313 | View certificateView = views.get(i); |
| 314 | // Show first cert by default |
| 315 | certificateView.setVisibility(i == 0 ? View.VISIBLE : View.GONE); |
| 316 | certLayout.addView(certificateView); |
| 317 | } |
| 318 | |
| 319 | return certLayout; |
| 320 | } |
| 321 | |
Victor Chang | d7d0e1b | 2016-04-05 20:01:24 +0100 | [diff] [blame] | 322 | private static int getButtonLabel(CertHolder certHolder) { |
| 323 | return certHolder.isSystemCert() ? ( certHolder.isDeleted() |
| 324 | ? R.string.trusted_credentials_enable_label |
| 325 | : R.string.trusted_credentials_disable_label ) |
| 326 | : R.string.trusted_credentials_remove_label; |
| 327 | } |
| 328 | |
| 329 | /* Animation code */ |
| 330 | private void animateViewTransition(final View nextCertView) { |
| 331 | animateOldContent(new Runnable() { |
| 332 | @Override |
| 333 | public void run() { |
| 334 | addAndAnimateNewContent(nextCertView); |
| 335 | } |
| 336 | }); |
| 337 | } |
| 338 | |
| 339 | private void animateOldContent(Runnable callback) { |
| 340 | // Fade out |
| 341 | mCurrentCertLayout.animate() |
| 342 | .alpha(0) |
| 343 | .setDuration(OUT_DURATION_MS) |
| 344 | .setInterpolator(AnimationUtils.loadInterpolator(mActivity, |
| 345 | android.R.interpolator.fast_out_linear_in)) |
| 346 | .withEndAction(callback) |
| 347 | .start(); |
| 348 | } |
| 349 | |
| 350 | private void addAndAnimateNewContent(View nextCertLayout) { |
| 351 | mCurrentCertLayout = nextCertLayout; |
| 352 | mRootContainer.removeAllViews(); |
| 353 | mRootContainer.addView(nextCertLayout); |
| 354 | |
| 355 | mRootContainer.addOnLayoutChangeListener( new View.OnLayoutChangeListener() { |
| 356 | @Override |
| 357 | public void onLayoutChange(View v, int left, int top, int right, int bottom, |
| 358 | int oldLeft, int oldTop, int oldRight, int oldBottom) { |
| 359 | mRootContainer.removeOnLayoutChangeListener(this); |
| 360 | |
| 361 | // Animate slide in from the right |
| 362 | final int containerWidth = mRootContainer.getWidth(); |
| 363 | mCurrentCertLayout.setTranslationX(containerWidth); |
| 364 | mCurrentCertLayout.animate() |
| 365 | .translationX(0) |
| 366 | .setInterpolator(AnimationUtils.loadInterpolator(mActivity, |
| 367 | android.R.interpolator.linear_out_slow_in)) |
| 368 | .setDuration(IN_DURATION_MS) |
| 369 | .start(); |
| 370 | } |
| 371 | }); |
| 372 | } |
| 373 | } |
| 374 | } |