1 /* 2 * Copyright (C) 2008 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17 package com.android.settings; 18 19 import android.app.Activity; 20 import android.content.Context; 21 import android.content.Intent; 22 import android.os.Build; 23 import android.os.Bundle; 24 import android.os.SELinux; 25 import android.os.SystemClock; 26 import android.os.SystemProperties; 27 import android.os.UserHandle; 28 import android.preference.Preference; 29 import android.preference.PreferenceGroup; 30 import android.preference.PreferenceScreen; 31 import android.util.Log; 32 import android.widget.Toast; 33 34 import java.io.BufferedReader; 35 import java.io.FileReader; 36 import java.io.IOException; 37 import java.util.regex.Matcher; 38 import java.util.regex.Pattern; 39 40 public class DeviceInfoSettings extends RestrictedSettingsFragment { 41 42 private static final String LOG_TAG = "DeviceInfoSettings"; 43 44 private static final String FILENAME_PROC_VERSION = "/proc/version"; 45 private static final String FILENAME_MSV = "/sys/board_properties/soc/msv"; 46 47 private static final String KEY_CONTAINER = "container"; 48 private static final String KEY_TEAM = "team"; 49 private static final String KEY_CONTRIBUTORS = "contributors"; 50 private static final String KEY_REGULATORY_INFO = "regulatory_info"; 51 private static final String KEY_TERMS = "terms"; 52 private static final String KEY_LICENSE = "license"; 53 private static final String KEY_COPYRIGHT = "copyright"; 54 private static final String KEY_SYSTEM_UPDATE_SETTINGS = "system_update_settings"; 55 private static final String PROPERTY_URL_SAFETYLEGAL = "ro.url.safetylegal"; 56 private static final String PROPERTY_SELINUX_STATUS = "ro.build.selinux"; 57 private static final String KEY_KERNEL_VERSION = "kernel_version"; 58 private static final String KEY_BUILD_NUMBER = "build_number"; 59 private static final String KEY_DEVICE_MODEL = "device_model"; 60 private static final String KEY_SELINUX_STATUS = "selinux_status"; 61 private static final String KEY_BASEBAND_VERSION = "baseband_version"; 62 private static final String KEY_FIRMWARE_VERSION = "firmware_version"; 63 private static final String KEY_UPDATE_SETTING = "additional_system_update_settings"; 64 private static final String KEY_EQUIPMENT_ID = "fcc_equipment_id"; 65 private static final String PROPERTY_EQUIPMENT_ID = "ro.ril.fccid"; 66 67 static final int TAPS_TO_BE_A_DEVELOPER = 7; 68 69 long[] mHits = new long[3]; 70 int mDevHitCountdown; 71 Toast mDevHitToast; 72 73 public DeviceInfoSettings() { 74 super(null /* Don't PIN protect the entire screen */); 75 } 76 77 @Override 78 public void onCreate(Bundle icicle) { 79 super.onCreate(icicle); 80 81 addPreferencesFromResource(R.xml.device_info_settings); 82 83 // We only call ensurePinRestrictedPreference() when mDevHitCountdown == 0. 84 // This will keep us from entering developer mode without a PIN. 85 protectByRestrictions(KEY_BUILD_NUMBER); 86 87 setStringSummary(KEY_FIRMWARE_VERSION, Build.VERSION.RELEASE); 88 findPreference(KEY_FIRMWARE_VERSION).setEnabled(true); 89 setValueSummary(KEY_BASEBAND_VERSION, "gsm.version.baseband"); 90 setStringSummary(KEY_DEVICE_MODEL, Build.MODEL + getMsvSuffix()); 91 setValueSummary(KEY_EQUIPMENT_ID, PROPERTY_EQUIPMENT_ID); 92 setStringSummary(KEY_DEVICE_MODEL, Build.MODEL); 93 setStringSummary(KEY_BUILD_NUMBER, Build.DISPLAY); 94 findPreference(KEY_BUILD_NUMBER).setEnabled(true); 95 findPreference(KEY_KERNEL_VERSION).setSummary(getFormattedKernelVersion()); 96 97 if (!SELinux.isSELinuxEnabled()) { 98 String status = getResources().getString(R.string.selinux_status_disabled); 99 setStringSummary(KEY_SELINUX_STATUS, status); 100 } else if (!SELinux.isSELinuxEnforced()) { 101 String status = getResources().getString(R.string.selinux_status_permissive); 102 setStringSummary(KEY_SELINUX_STATUS, status); 103 } 104 105 // Remove selinux information if property is not present 106 removePreferenceIfPropertyMissing(getPreferenceScreen(), KEY_SELINUX_STATUS, 107 PROPERTY_SELINUX_STATUS); 108 109 // Remove Safety information preference if PROPERTY_URL_SAFETYLEGAL is not set 110 removePreferenceIfPropertyMissing(getPreferenceScreen(), "safetylegal", 111 PROPERTY_URL_SAFETYLEGAL); 112 113 // Remove Equipment id preference if FCC ID is not set by RIL 114 removePreferenceIfPropertyMissing(getPreferenceScreen(), KEY_EQUIPMENT_ID, 115 PROPERTY_EQUIPMENT_ID); 116 117 // Remove Baseband version if wifi-only device 118 if (Utils.isWifiOnly(getActivity())) { 119 getPreferenceScreen().removePreference(findPreference(KEY_BASEBAND_VERSION)); 120 } 121 122 /* 123 * Settings is a generic app and should not contain any device-specific 124 * info. 125 */ 126 final Activity act = getActivity(); 127 // These are contained in the "container" preference group 128 PreferenceGroup parentPreference = (PreferenceGroup) findPreference(KEY_CONTAINER); 129 Utils.updatePreferenceToSpecificActivityOrRemove(act, parentPreference, KEY_TERMS, 130 Utils.UPDATE_PREFERENCE_FLAG_SET_TITLE_TO_MATCHING_ACTIVITY); 131 Utils.updatePreferenceToSpecificActivityOrRemove(act, parentPreference, KEY_LICENSE, 132 Utils.UPDATE_PREFERENCE_FLAG_SET_TITLE_TO_MATCHING_ACTIVITY); 133 Utils.updatePreferenceToSpecificActivityOrRemove(act, parentPreference, KEY_COPYRIGHT, 134 Utils.UPDATE_PREFERENCE_FLAG_SET_TITLE_TO_MATCHING_ACTIVITY); 135 Utils.updatePreferenceToSpecificActivityOrRemove(act, parentPreference, KEY_TEAM, 136 Utils.UPDATE_PREFERENCE_FLAG_SET_TITLE_TO_MATCHING_ACTIVITY); 137 138 // These are contained by the root preference screen 139 parentPreference = getPreferenceScreen(); 140 if (UserHandle.myUserId() == UserHandle.USER_OWNER) { 141 Utils.updatePreferenceToSpecificActivityOrRemove(act, parentPreference, 142 KEY_SYSTEM_UPDATE_SETTINGS, 143 Utils.UPDATE_PREFERENCE_FLAG_SET_TITLE_TO_MATCHING_ACTIVITY); 144 } else { 145 // Remove for secondary users 146 removePreference(KEY_SYSTEM_UPDATE_SETTINGS); 147 } 148 Utils.updatePreferenceToSpecificActivityOrRemove(act, parentPreference, KEY_CONTRIBUTORS, 149 Utils.UPDATE_PREFERENCE_FLAG_SET_TITLE_TO_MATCHING_ACTIVITY); 150 151 // Read platform settings for additional system update setting 152 removePreferenceIfBoolFalse(KEY_UPDATE_SETTING, 153 R.bool.config_additional_system_update_setting_enable); 154 155 // Remove regulatory information if not enabled. 156 removePreferenceIfBoolFalse(KEY_REGULATORY_INFO, 157 R.bool.config_show_regulatory_info); 158 } 159 160 @Override 161 public void onResume() { 162 super.onResume(); 163 mDevHitCountdown = getActivity().getSharedPreferences(DevelopmentSettings.PREF_FILE, 164 Context.MODE_PRIVATE).getBoolean(DevelopmentSettings.PREF_SHOW, 165 android.os.Build.TYPE.equals("eng")) ? -1 : TAPS_TO_BE_A_DEVELOPER; 166 mDevHitToast = null; 167 } 168 169 @Override 170 public boolean onPreferenceTreeClick(PreferenceScreen preferenceScreen, Preference preference) { 171 if (preference.getKey().equals(KEY_FIRMWARE_VERSION)) { 172 System.arraycopy(mHits, 1, mHits, 0, mHits.length-1); 173 mHits[mHits.length-1] = SystemClock.uptimeMillis(); 174 if (mHits[0] >= (SystemClock.uptimeMillis()-500)) { 175 Intent intent = new Intent(Intent.ACTION_MAIN); 176 intent.setClassName("android", 177 com.android.internal.app.PlatLogoActivity.class.getName()); 178 try { 179 startActivity(intent); 180 } catch (Exception e) { 181 Log.e(LOG_TAG, "Unable to start activity " + intent.toString()); 182 } 183 } 184 } else if (preference.getKey().equals(KEY_BUILD_NUMBER)) { 185 // Don't enable developer options for secondary users. 186 if (UserHandle.myUserId() != UserHandle.USER_OWNER) return true; 187 188 if (mDevHitCountdown > 0) { 189 if (mDevHitCountdown == 1) { 190 if (super.ensurePinRestrictedPreference(preference)) { 191 return true; 192 } 193 } 194 mDevHitCountdown--; 195 if (mDevHitCountdown == 0) { 196 getActivity().getSharedPreferences(DevelopmentSettings.PREF_FILE, 197 Context.MODE_PRIVATE).edit().putBoolean( 198 DevelopmentSettings.PREF_SHOW, true).apply(); 199 if (mDevHitToast != null) { 200 mDevHitToast.cancel(); 201 } 202 mDevHitToast = Toast.makeText(getActivity(), R.string.show_dev_on, 203 Toast.LENGTH_LONG); 204 mDevHitToast.show(); 205 } else if (mDevHitCountdown > 0 206 && mDevHitCountdown < (TAPS_TO_BE_A_DEVELOPER-2)) { 207 if (mDevHitToast != null) { 208 mDevHitToast.cancel(); 209 } 210 mDevHitToast = Toast.makeText(getActivity(), getResources().getQuantityString( 211 R.plurals.show_dev_countdown, mDevHitCountdown, mDevHitCountdown), 212 Toast.LENGTH_SHORT); 213 mDevHitToast.show(); 214 } 215 } else if (mDevHitCountdown < 0) { 216 if (mDevHitToast != null) { 217 mDevHitToast.cancel(); 218 } 219 mDevHitToast = Toast.makeText(getActivity(), R.string.show_dev_already, 220 Toast.LENGTH_LONG); 221 mDevHitToast.show(); 222 } 223 } 224 return super.onPreferenceTreeClick(preferenceScreen, preference); 225 } 226 227 private void removePreferenceIfPropertyMissing(PreferenceGroup preferenceGroup, 228 String preference, String property ) { 229 if (SystemProperties.get(property).equals("")) { 230 // Property is missing so remove preference from group 231 try { 232 preferenceGroup.removePreference(findPreference(preference)); 233 } catch (RuntimeException e) { 234 Log.d(LOG_TAG, "Property '" + property + "' missing and no '" 235 + preference + "' preference"); 236 } 237 } 238 } 239 240 private void removePreferenceIfBoolFalse(String preference, int resId) { 241 if (!getResources().getBoolean(resId)) { 242 Preference pref = findPreference(preference); 243 if (pref != null) { 244 getPreferenceScreen().removePreference(pref); 245 } 246 } 247 } 248 249 private void setStringSummary(String preference, String value) { 250 try { 251 findPreference(preference).setSummary(value); 252 } catch (RuntimeException e) { 253 findPreference(preference).setSummary( 254 getResources().getString(R.string.device_info_default)); 255 } 256 } 257 258 private void setValueSummary(String preference, String property) { 259 try { 260 findPreference(preference).setSummary( 261 SystemProperties.get(property, 262 getResources().getString(R.string.device_info_default))); 263 } catch (RuntimeException e) { 264 // No recovery 265 } 266 } 267 268 /** 269 * Reads a line from the specified file. 270 * @param filename the file to read from 271 * @return the first line, if any. 272 * @throws IOException if the file couldn't be read 273 */ 274 private static String readLine(String filename) throws IOException { 275 BufferedReader reader = new BufferedReader(new FileReader(filename), 256); 276 try { 277 return reader.readLine(); 278 } finally { 279 reader.close(); 280 } 281 } 282 283 public static String getFormattedKernelVersion() { 284 try { 285 return formatKernelVersion(readLine(FILENAME_PROC_VERSION)); 286 287 } catch (IOException e) { 288 Log.e(LOG_TAG, 289 "IO Exception when getting kernel version for Device Info screen", 290 e); 291 292 return "Unavailable"; 293 } 294 } 295 296 public static String formatKernelVersion(String rawKernelVersion) { 297 // Example (see tests for more): 298 // Linux version 3.0.31-g6fb96c9 (android-build (at) xxx.xxx.xxx.xxx.com) \ 299 // (gcc version 4.6.x-xxx 20120106 (prerelease) (GCC) ) #1 SMP PREEMPT \ 300 // Thu Jun 28 11:02:39 PDT 2012 301 302 final String PROC_VERSION_REGEX = 303 "Linux version (\\S+) " + /* group 1: "3.0.31-g6fb96c9" */ 304 "\\((\\S+?)\\) " + /* group 2: "x (at) y.com" (kernel builder) */ 305 "(?:\\(gcc.+? \\)) " + /* ignore: GCC version information */ 306 "(#\\d+) " + /* group 3: "#1" */ 307 "(?:.*?)?" + /* ignore: optional SMP, PREEMPT, and any CONFIG_FLAGS */ 308 "((Sun|Mon|Tue|Wed|Thu|Fri|Sat).+)"; /* group 4: "Thu Jun 28 11:02:39 PDT 2012" */ 309 310 Matcher m = Pattern.compile(PROC_VERSION_REGEX).matcher(rawKernelVersion); 311 if (!m.matches()) { 312 Log.e(LOG_TAG, "Regex did not match on /proc/version: " + rawKernelVersion); 313 return "Unavailable"; 314 } else if (m.groupCount() < 4) { 315 Log.e(LOG_TAG, "Regex match on /proc/version only returned " + m.groupCount() 316 + " groups"); 317 return "Unavailable"; 318 } 319 return m.group(1) + "\n" + // 3.0.31-g6fb96c9 320 m.group(2) + " " + m.group(3) + "\n" + // x (at) y.com #1 321 m.group(4); // Thu Jun 28 11:02:39 PDT 2012 322 } 323 324 /** 325 * Returns " (ENGINEERING)" if the msv file has a zero value, else returns "". 326 * @return a string to append to the model number description. 327 */ 328 private String getMsvSuffix() { 329 // Production devices should have a non-zero value. If we can't read it, assume it's a 330 // production device so that we don't accidentally show that it's an ENGINEERING device. 331 try { 332 String msv = readLine(FILENAME_MSV); 333 // Parse as a hex number. If it evaluates to a zero, then it's an engineering build. 334 if (Long.parseLong(msv, 16) == 0) { 335 return " (ENGINEERING)"; 336 } 337 } catch (IOException ioe) { 338 // Fail quietly, as the file may not exist on some devices. 339 } catch (NumberFormatException nfe) { 340 // Fail quietly, returning empty string should be sufficient 341 } 342 return ""; 343 } 344 } 345
