1 /* 2 * Copyright (C) 2006 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.app.Dialog; 21 import android.app.admin.DevicePolicyManager; 22 import android.app.settings.SettingsEnums; 23 import android.content.Context; 24 import android.content.Intent; 25 import android.net.ConnectivityManager; 26 import android.net.ProxyInfo; 27 import android.os.Bundle; 28 import android.text.Selection; 29 import android.text.Spannable; 30 import android.text.TextUtils; 31 import android.util.Log; 32 import android.view.LayoutInflater; 33 import android.view.View; 34 import android.view.View.OnClickListener; 35 import android.view.View.OnFocusChangeListener; 36 import android.view.ViewGroup; 37 import android.widget.Button; 38 import android.widget.EditText; 39 import android.widget.TextView; 40 41 import androidx.appcompat.app.AlertDialog; 42 43 import com.android.net.module.util.ProxyUtils; 44 import com.android.settings.SettingsPreferenceFragment.SettingsDialogFragment; 45 import com.android.settings.core.InstrumentedFragment; 46 47 import java.util.Arrays; 48 49 public class ProxySelector extends InstrumentedFragment implements DialogCreatable { 50 private static final String TAG = "ProxySelector"; 51 52 EditText mHostnameField; 53 EditText mPortField; 54 EditText mExclusionListField; 55 Button mOKButton; 56 Button mClearButton; 57 Button mDefaultButton; 58 59 private static final int ERROR_DIALOG_ID = 0; 60 61 private SettingsDialogFragment mDialogFragment; 62 private View mView; 63 64 @Override onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState)65 public View onCreateView(LayoutInflater inflater, ViewGroup container, 66 Bundle savedInstanceState) { 67 mView = inflater.inflate(R.layout.proxy, container, false); 68 initView(mView); 69 // TODO: Populate based on connection status 70 populateFields(); 71 return mView; 72 } 73 74 @Override onActivityCreated(Bundle savedInstanceState)75 public void onActivityCreated(Bundle savedInstanceState) { 76 super.onActivityCreated(savedInstanceState); 77 final DevicePolicyManager dpm = 78 (DevicePolicyManager)getActivity().getSystemService(Context.DEVICE_POLICY_SERVICE); 79 80 final boolean userSetGlobalProxy = (dpm.getGlobalProxyAdmin() == null); 81 // Disable UI if the Global Proxy is being controlled by a Device Admin 82 mHostnameField.setEnabled(userSetGlobalProxy); 83 mPortField.setEnabled(userSetGlobalProxy); 84 mExclusionListField.setEnabled(userSetGlobalProxy); 85 mOKButton.setEnabled(userSetGlobalProxy); 86 mClearButton.setEnabled(userSetGlobalProxy); 87 mDefaultButton.setEnabled(userSetGlobalProxy); 88 } 89 90 // Dialog management 91 92 @Override onCreateDialog(int id)93 public Dialog onCreateDialog(int id) { 94 if (id == ERROR_DIALOG_ID) { 95 String hostname = mHostnameField.getText().toString().trim(); 96 String portStr = mPortField.getText().toString().trim(); 97 String exclList = mExclusionListField.getText().toString().trim(); 98 String msg = getActivity().getString(validate(hostname, portStr, exclList)); 99 100 return new AlertDialog.Builder(getActivity()) 101 .setTitle(R.string.proxy_error) 102 .setPositiveButton(R.string.proxy_error_dismiss, null) 103 .setMessage(msg) 104 .create(); 105 } 106 return null; 107 } 108 109 @Override getDialogMetricsCategory(int dialogId)110 public int getDialogMetricsCategory(int dialogId) { 111 return SettingsEnums.DIALOG_PROXY_SELECTOR_ERROR; 112 } 113 showDialog(int dialogId)114 private void showDialog(int dialogId) { 115 if (mDialogFragment != null) { 116 Log.e(TAG, "Old dialog fragment not null!"); 117 } 118 mDialogFragment = SettingsDialogFragment.newInstance(this, dialogId); 119 mDialogFragment.show(getActivity().getSupportFragmentManager(), Integer.toString(dialogId)); 120 } 121 initView(View view)122 private void initView(View view) { 123 mHostnameField = (EditText)view.findViewById(R.id.hostname); 124 mHostnameField.setOnFocusChangeListener(mOnFocusChangeHandler); 125 126 mPortField = (EditText)view.findViewById(R.id.port); 127 mPortField.setOnClickListener(mOKHandler); 128 mPortField.setOnFocusChangeListener(mOnFocusChangeHandler); 129 130 mExclusionListField = (EditText)view.findViewById(R.id.exclusionlist); 131 mExclusionListField.setOnFocusChangeListener(mOnFocusChangeHandler); 132 133 mOKButton = (Button)view.findViewById(R.id.action); 134 mOKButton.setOnClickListener(mOKHandler); 135 136 mClearButton = (Button)view.findViewById(R.id.clear); 137 mClearButton.setOnClickListener(mClearHandler); 138 139 mDefaultButton = (Button)view.findViewById(R.id.defaultView); 140 mDefaultButton.setOnClickListener(mDefaultHandler); 141 } 142 populateFields()143 void populateFields() { 144 final Activity activity = getActivity(); 145 String hostname = ""; 146 int port = -1; 147 String exclList = ""; 148 // Use the last setting given by the user 149 ConnectivityManager cm = 150 (ConnectivityManager)getActivity().getSystemService(Context.CONNECTIVITY_SERVICE); 151 152 ProxyInfo proxy = cm.getGlobalProxy(); 153 if (proxy != null) { 154 hostname = proxy.getHost(); 155 port = proxy.getPort(); 156 exclList = ProxyUtils.exclusionListAsString(proxy.getExclusionList()); 157 } 158 159 if (hostname == null) { 160 hostname = ""; 161 } 162 163 mHostnameField.setText(hostname); 164 165 String portStr = port == -1 ? "" : Integer.toString(port); 166 mPortField.setText(portStr); 167 168 mExclusionListField.setText(exclList); 169 170 final Intent intent = activity.getIntent(); 171 172 String buttonLabel = intent.getStringExtra("button-label"); 173 if (!TextUtils.isEmpty(buttonLabel)) { 174 mOKButton.setText(buttonLabel); 175 } 176 177 String title = intent.getStringExtra("title"); 178 if (!TextUtils.isEmpty(title)) { 179 activity.setTitle(title); 180 } else { 181 activity.setTitle(R.string.proxy_settings_title); 182 } 183 } 184 185 /** 186 * validate syntax of hostname and port entries 187 * @return 0 on success, string resource ID on failure 188 */ validate(String hostname, String port, String exclList)189 public static int validate(String hostname, String port, String exclList) { 190 switch (ProxyUtils.validate(hostname, port, exclList)) { 191 case ProxyUtils.PROXY_VALID: 192 return 0; 193 case ProxyUtils.PROXY_HOSTNAME_EMPTY: 194 return R.string.proxy_error_empty_host_set_port; 195 case ProxyUtils.PROXY_HOSTNAME_INVALID: 196 return R.string.proxy_error_invalid_host; 197 case ProxyUtils.PROXY_PORT_EMPTY: 198 return R.string.proxy_error_empty_port; 199 case ProxyUtils.PROXY_PORT_INVALID: 200 return R.string.proxy_error_invalid_port; 201 case ProxyUtils.PROXY_EXCLLIST_INVALID: 202 return R.string.proxy_error_invalid_exclusion_list; 203 default: 204 // should neven happen 205 Log.e(TAG, "Unknown proxy settings error"); 206 return -1; 207 } 208 } 209 210 /** 211 * returns true on success, false if the user must correct something 212 */ saveToDb()213 boolean saveToDb() { 214 215 String hostname = mHostnameField.getText().toString().trim(); 216 String portStr = mPortField.getText().toString().trim(); 217 String exclList = mExclusionListField.getText().toString().trim(); 218 int port = 0; 219 220 int result = validate(hostname, portStr, exclList); 221 if (result != 0) { 222 showDialog(ERROR_DIALOG_ID); 223 return false; 224 } 225 226 if (portStr.length() > 0) { 227 try { 228 port = Integer.parseInt(portStr); 229 } catch (NumberFormatException ex) { 230 // should never happen - caught by validate above 231 return false; 232 } 233 } 234 235 ProxyInfo p = ProxyInfo.buildDirectProxy( 236 hostname, port, Arrays.asList(exclList.split(","))); 237 // FIXME: The best solution would be to make a better UI that would 238 // disable editing of the text boxes if the user chooses to use the 239 // default settings. i.e. checking a box to always use the default 240 // carrier. http:/b/issue?id=756480 241 // FIXME: If the user types in a proxy that matches the default, should 242 // we keep that setting? Can be fixed with a new UI. 243 ConnectivityManager cm = 244 (ConnectivityManager)getActivity().getSystemService(Context.CONNECTIVITY_SERVICE); 245 246 cm.setGlobalProxy(p); 247 return true; 248 } 249 250 OnClickListener mOKHandler = new OnClickListener() { 251 public void onClick(View v) { 252 if (saveToDb()) { 253 getActivity().onBackPressed(); 254 } 255 } 256 }; 257 258 OnClickListener mClearHandler = new OnClickListener() { 259 public void onClick(View v) { 260 mHostnameField.setText(""); 261 mPortField.setText(""); 262 mExclusionListField.setText(""); 263 } 264 }; 265 266 OnClickListener mDefaultHandler = new OnClickListener() { 267 public void onClick(View v) { 268 // TODO: populate based on connection status 269 populateFields(); 270 } 271 }; 272 273 OnFocusChangeListener mOnFocusChangeHandler = new OnFocusChangeListener() { 274 public void onFocusChange(View v, boolean hasFocus) { 275 if (hasFocus) { 276 TextView textView = (TextView) v; 277 Selection.selectAll((Spannable) textView.getText()); 278 } 279 } 280 }; 281 282 @Override getMetricsCategory()283 public int getMetricsCategory() { 284 return SettingsEnums.PROXY_SELECTOR; 285 } 286 } 287