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1 /*
2  * Copyright (C) 2007 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.internal.telephony.cat;
18 
19 import android.content.Context;
20 import android.content.Intent;
21 import android.content.pm.PackageManager;
22 import android.content.pm.ResolveInfo;
23 import android.content.res.Resources.NotFoundException;
24 import android.os.AsyncResult;
25 import android.os.Handler;
26 import android.os.HandlerThread;
27 import android.os.Message;
28 import android.os.SystemProperties;
29 import android.telephony.SubscriptionManager;
30 import android.telephony.TelephonyManager;
31 
32 import com.android.internal.telephony.CommandsInterface;
33 import com.android.internal.telephony.PhoneConstants;
34 import com.android.internal.telephony.SubscriptionController;
35 import com.android.internal.telephony.uicc.IccFileHandler;
36 import com.android.internal.telephony.uicc.IccRecords;
37 import com.android.internal.telephony.uicc.IccUtils;
38 import com.android.internal.telephony.uicc.UiccCard;
39 import com.android.internal.telephony.uicc.UiccCardApplication;
40 import com.android.internal.telephony.uicc.IccCardStatus.CardState;
41 import com.android.internal.telephony.uicc.IccRefreshResponse;
42 import com.android.internal.telephony.uicc.UiccController;
43 
44 import java.io.ByteArrayOutputStream;
45 import java.util.List;
46 import java.util.Locale;
47 
48 import static com.android.internal.telephony.cat.CatCmdMessage.
49                    SetupEventListConstants.IDLE_SCREEN_AVAILABLE_EVENT;
50 import static com.android.internal.telephony.cat.CatCmdMessage.
51                    SetupEventListConstants.LANGUAGE_SELECTION_EVENT;
52 
53 class RilMessage {
54     int mId;
55     Object mData;
56     ResultCode mResCode;
57 
RilMessage(int msgId, String rawData)58     RilMessage(int msgId, String rawData) {
59         mId = msgId;
60         mData = rawData;
61     }
62 
RilMessage(RilMessage other)63     RilMessage(RilMessage other) {
64         mId = other.mId;
65         mData = other.mData;
66         mResCode = other.mResCode;
67     }
68 }
69 
70 /**
71  * Class that implements SIM Toolkit Telephony Service. Interacts with the RIL
72  * and application.
73  *
74  * {@hide}
75  */
76 public class CatService extends Handler implements AppInterface {
77     private static final boolean DBG = false;
78 
79     // Class members
80     private static IccRecords mIccRecords;
81     private static UiccCardApplication mUiccApplication;
82 
83     // Service members.
84     // Protects singleton instance lazy initialization.
85     private static final Object sInstanceLock = new Object();
86     private static CatService[] sInstance = null;
87     private CommandsInterface mCmdIf;
88     private Context mContext;
89     private CatCmdMessage mCurrntCmd = null;
90     private CatCmdMessage mMenuCmd = null;
91 
92     private RilMessageDecoder mMsgDecoder = null;
93     private boolean mStkAppInstalled = false;
94 
95     private UiccController mUiccController;
96     private CardState mCardState = CardState.CARDSTATE_ABSENT;
97 
98     // Service constants.
99     protected static final int MSG_ID_SESSION_END              = 1;
100     protected static final int MSG_ID_PROACTIVE_COMMAND        = 2;
101     protected static final int MSG_ID_EVENT_NOTIFY             = 3;
102     protected static final int MSG_ID_CALL_SETUP               = 4;
103     static final int MSG_ID_REFRESH                  = 5;
104     static final int MSG_ID_RESPONSE                 = 6;
105     static final int MSG_ID_SIM_READY                = 7;
106 
107     protected static final int MSG_ID_ICC_CHANGED    = 8;
108     protected static final int MSG_ID_ALPHA_NOTIFY   = 9;
109 
110     static final int MSG_ID_RIL_MSG_DECODED          = 10;
111 
112     // Events to signal SIM presence or absent in the device.
113     private static final int MSG_ID_ICC_RECORDS_LOADED       = 20;
114 
115     //Events to signal SIM REFRESH notificatations
116     private static final int MSG_ID_ICC_REFRESH  = 30;
117 
118     private static final int DEV_ID_KEYPAD      = 0x01;
119     private static final int DEV_ID_DISPLAY     = 0x02;
120     private static final int DEV_ID_UICC        = 0x81;
121     private static final int DEV_ID_TERMINAL    = 0x82;
122     private static final int DEV_ID_NETWORK     = 0x83;
123 
124     static final String STK_DEFAULT = "Default Message";
125 
126     private HandlerThread mHandlerThread;
127     private int mSlotId;
128 
129     /* For multisim catservice should not be singleton */
CatService(CommandsInterface ci, UiccCardApplication ca, IccRecords ir, Context context, IccFileHandler fh, UiccCard ic, int slotId)130     private CatService(CommandsInterface ci, UiccCardApplication ca, IccRecords ir,
131             Context context, IccFileHandler fh, UiccCard ic, int slotId) {
132         if (ci == null || ca == null || ir == null || context == null || fh == null
133                 || ic == null) {
134             throw new NullPointerException(
135                     "Service: Input parameters must not be null");
136         }
137         mCmdIf = ci;
138         mContext = context;
139         mSlotId = slotId;
140         mHandlerThread = new HandlerThread("Cat Telephony service" + slotId);
141         mHandlerThread.start();
142 
143         // Get the RilMessagesDecoder for decoding the messages.
144         mMsgDecoder = RilMessageDecoder.getInstance(this, fh, slotId);
145         if (null == mMsgDecoder) {
146             CatLog.d(this, "Null RilMessageDecoder instance");
147             return;
148         }
149         mMsgDecoder.start();
150 
151         // Register ril events handling.
152         mCmdIf.setOnCatSessionEnd(this, MSG_ID_SESSION_END, null);
153         mCmdIf.setOnCatProactiveCmd(this, MSG_ID_PROACTIVE_COMMAND, null);
154         mCmdIf.setOnCatEvent(this, MSG_ID_EVENT_NOTIFY, null);
155         mCmdIf.setOnCatCallSetUp(this, MSG_ID_CALL_SETUP, null);
156         //mCmdIf.setOnSimRefresh(this, MSG_ID_REFRESH, null);
157 
158         mCmdIf.registerForIccRefresh(this, MSG_ID_ICC_REFRESH, null);
159         mCmdIf.setOnCatCcAlphaNotify(this, MSG_ID_ALPHA_NOTIFY, null);
160 
161         mIccRecords = ir;
162         mUiccApplication = ca;
163 
164         // Register for SIM ready event.
165         mIccRecords.registerForRecordsLoaded(this, MSG_ID_ICC_RECORDS_LOADED, null);
166         CatLog.d(this, "registerForRecordsLoaded slotid=" + mSlotId + " instance:" + this);
167 
168 
169         mUiccController = UiccController.getInstance();
170         mUiccController.registerForIccChanged(this, MSG_ID_ICC_CHANGED, null);
171 
172         // Check if STK application is available
173         mStkAppInstalled = isStkAppInstalled();
174 
175         CatLog.d(this, "Running CAT service on Slotid: " + mSlotId +
176                 ". STK app installed:" + mStkAppInstalled);
177     }
178 
179     /**
180      * Used for instantiating the Service from the Card.
181      *
182      * @param ci CommandsInterface object
183      * @param context phone app context
184      * @param ic Icc card
185      * @param slotId to know the index of card
186      * @return The only Service object in the system
187      */
getInstance(CommandsInterface ci, Context context, UiccCard ic, int slotId)188     public static CatService getInstance(CommandsInterface ci,
189             Context context, UiccCard ic, int slotId) {
190         UiccCardApplication ca = null;
191         IccFileHandler fh = null;
192         IccRecords ir = null;
193         if (ic != null) {
194             /* Since Cat is not tied to any application, but rather is Uicc application
195              * in itself - just get first FileHandler and IccRecords object
196              */
197             ca = ic.getApplicationIndex(0);
198             if (ca != null) {
199                 fh = ca.getIccFileHandler();
200                 ir = ca.getIccRecords();
201             }
202         }
203 
204         synchronized (sInstanceLock) {
205             if (sInstance == null) {
206                 int simCount = TelephonyManager.getDefault().getSimCount();
207                 sInstance = new CatService[simCount];
208                 for (int i = 0; i < simCount; i++) {
209                     sInstance[i] = null;
210                 }
211             }
212             if (sInstance[slotId] == null) {
213                 if (ci == null || ca == null || ir == null || context == null || fh == null
214                         || ic == null) {
215                     return null;
216                 }
217 
218                 sInstance[slotId] = new CatService(ci, ca, ir, context, fh, ic, slotId);
219             } else if ((ir != null) && (mIccRecords != ir)) {
220                 if (mIccRecords != null) {
221                     mIccRecords.unregisterForRecordsLoaded(sInstance[slotId]);
222                 }
223 
224                 mIccRecords = ir;
225                 mUiccApplication = ca;
226 
227                 mIccRecords.registerForRecordsLoaded(sInstance[slotId],
228                         MSG_ID_ICC_RECORDS_LOADED, null);
229                 CatLog.d(sInstance[slotId], "registerForRecordsLoaded slotid=" + slotId
230                         + " instance:" + sInstance[slotId]);
231             }
232             return sInstance[slotId];
233         }
234     }
235 
dispose()236     public void dispose() {
237         synchronized (sInstanceLock) {
238             CatLog.d(this, "Disposing CatService object");
239             mIccRecords.unregisterForRecordsLoaded(this);
240 
241             // Clean up stk icon if dispose is called
242             broadcastCardStateAndIccRefreshResp(CardState.CARDSTATE_ABSENT, null);
243 
244             mCmdIf.unSetOnCatSessionEnd(this);
245             mCmdIf.unSetOnCatProactiveCmd(this);
246             mCmdIf.unSetOnCatEvent(this);
247             mCmdIf.unSetOnCatCallSetUp(this);
248             mCmdIf.unSetOnCatCcAlphaNotify(this);
249 
250             mCmdIf.unregisterForIccRefresh(this);
251             if (mUiccController != null) {
252                 mUiccController.unregisterForIccChanged(this);
253                 mUiccController = null;
254             }
255             mMsgDecoder.dispose();
256             mMsgDecoder = null;
257             mHandlerThread.quit();
258             mHandlerThread = null;
259             removeCallbacksAndMessages(null);
260             if (sInstance != null) {
261                 if (SubscriptionManager.isValidSlotId(mSlotId)) {
262                     sInstance[mSlotId] = null;
263                 } else {
264                     CatLog.d(this, "error: invaild slot id: " + mSlotId);
265                 }
266             }
267         }
268     }
269 
270     @Override
finalize()271     protected void finalize() {
272         CatLog.d(this, "Service finalized");
273     }
274 
handleRilMsg(RilMessage rilMsg)275     private void handleRilMsg(RilMessage rilMsg) {
276         if (rilMsg == null) {
277             return;
278         }
279 
280         // dispatch messages
281         CommandParams cmdParams = null;
282         switch (rilMsg.mId) {
283         case MSG_ID_EVENT_NOTIFY:
284             if (rilMsg.mResCode == ResultCode.OK) {
285                 cmdParams = (CommandParams) rilMsg.mData;
286                 if (cmdParams != null) {
287                     handleCommand(cmdParams, false);
288                 }
289             }
290             break;
291         case MSG_ID_PROACTIVE_COMMAND:
292             try {
293                 cmdParams = (CommandParams) rilMsg.mData;
294             } catch (ClassCastException e) {
295                 // for error handling : cast exception
296                 CatLog.d(this, "Fail to parse proactive command");
297                 // Don't send Terminal Resp if command detail is not available
298                 if (mCurrntCmd != null) {
299                     sendTerminalResponse(mCurrntCmd.mCmdDet, ResultCode.CMD_DATA_NOT_UNDERSTOOD,
300                                      false, 0x00, null);
301                 }
302                 break;
303             }
304             if (cmdParams != null) {
305                 if (rilMsg.mResCode == ResultCode.OK) {
306                     handleCommand(cmdParams, true);
307                 } else {
308                     // for proactive commands that couldn't be decoded
309                     // successfully respond with the code generated by the
310                     // message decoder.
311                     sendTerminalResponse(cmdParams.mCmdDet, rilMsg.mResCode,
312                             false, 0, null);
313                 }
314             }
315             break;
316         case MSG_ID_REFRESH:
317             cmdParams = (CommandParams) rilMsg.mData;
318             if (cmdParams != null) {
319                 handleCommand(cmdParams, false);
320             }
321             break;
322         case MSG_ID_SESSION_END:
323             handleSessionEnd();
324             break;
325         case MSG_ID_CALL_SETUP:
326             // prior event notify command supplied all the information
327             // needed for set up call processing.
328             break;
329         }
330     }
331 
332     /**
333      * This function validates the events in SETUP_EVENT_LIST which are currently
334      * supported by the Android framework. In case of SETUP_EVENT_LIST has NULL events
335      * or no events, all the events need to be reset.
336      */
isSupportedSetupEventCommand(CatCmdMessage cmdMsg)337     private boolean isSupportedSetupEventCommand(CatCmdMessage cmdMsg) {
338         boolean flag = true;
339 
340         for (int eventVal: cmdMsg.getSetEventList().eventList) {
341             CatLog.d(this,"Event: " + eventVal);
342             switch (eventVal) {
343                 /* Currently android is supporting only the below events in SetupEventList
344                  * Language Selection.  */
345                 case IDLE_SCREEN_AVAILABLE_EVENT:
346                 case LANGUAGE_SELECTION_EVENT:
347                     break;
348                 default:
349                     flag = false;
350             }
351         }
352         return flag;
353     }
354 
355     /**
356      * Handles RIL_UNSOL_STK_EVENT_NOTIFY or RIL_UNSOL_STK_PROACTIVE_COMMAND command
357      * from RIL.
358      * Sends valid proactive command data to the application using intents.
359      * RIL_REQUEST_STK_SEND_TERMINAL_RESPONSE will be send back if the command is
360      * from RIL_UNSOL_STK_PROACTIVE_COMMAND.
361      */
handleCommand(CommandParams cmdParams, boolean isProactiveCmd)362     private void handleCommand(CommandParams cmdParams, boolean isProactiveCmd) {
363         CatLog.d(this, cmdParams.getCommandType().name());
364 
365         // Log all proactive commands.
366         if (isProactiveCmd) {
367             if (mUiccController != null) {
368                 mUiccController.addCardLog("ProactiveCommand mSlotId=" + mSlotId +
369                         " cmdParams=" + cmdParams);
370             }
371         }
372 
373         CharSequence message;
374         ResultCode resultCode;
375         CatCmdMessage cmdMsg = new CatCmdMessage(cmdParams);
376         switch (cmdParams.getCommandType()) {
377             case SET_UP_MENU:
378                 if (removeMenu(cmdMsg.getMenu())) {
379                     mMenuCmd = null;
380                 } else {
381                     mMenuCmd = cmdMsg;
382                 }
383                 resultCode = cmdParams.mLoadIconFailed ? ResultCode.PRFRMD_ICON_NOT_DISPLAYED
384                                                                             : ResultCode.OK;
385                 sendTerminalResponse(cmdParams.mCmdDet, resultCode, false, 0, null);
386                 break;
387             case DISPLAY_TEXT:
388                 break;
389             case REFRESH:
390                 // ME side only handles refresh commands which meant to remove IDLE
391                 // MODE TEXT.
392                 cmdParams.mCmdDet.typeOfCommand = CommandType.SET_UP_IDLE_MODE_TEXT.value();
393                 break;
394             case SET_UP_IDLE_MODE_TEXT:
395                 resultCode = cmdParams.mLoadIconFailed ? ResultCode.PRFRMD_ICON_NOT_DISPLAYED
396                                                                             : ResultCode.OK;
397                 sendTerminalResponse(cmdParams.mCmdDet,resultCode, false, 0, null);
398                 break;
399             case SET_UP_EVENT_LIST:
400                 if (isSupportedSetupEventCommand(cmdMsg)) {
401                     sendTerminalResponse(cmdParams.mCmdDet, ResultCode.OK, false, 0, null);
402                 } else {
403                     sendTerminalResponse(cmdParams.mCmdDet, ResultCode.BEYOND_TERMINAL_CAPABILITY,
404                             false, 0, null);
405                 }
406                 break;
407             case PROVIDE_LOCAL_INFORMATION:
408                 ResponseData resp;
409                 switch (cmdParams.mCmdDet.commandQualifier) {
410                     case CommandParamsFactory.DTTZ_SETTING:
411                         resp = new DTTZResponseData(null);
412                         sendTerminalResponse(cmdParams.mCmdDet, ResultCode.OK, false, 0, resp);
413                         break;
414                     case CommandParamsFactory.LANGUAGE_SETTING:
415                         resp = new LanguageResponseData(Locale.getDefault().getLanguage());
416                         sendTerminalResponse(cmdParams.mCmdDet, ResultCode.OK, false, 0, resp);
417                         break;
418                     default:
419                         sendTerminalResponse(cmdParams.mCmdDet, ResultCode.OK, false, 0, null);
420                 }
421                 // No need to start STK app here.
422                 return;
423             case LAUNCH_BROWSER:
424                 if ((((LaunchBrowserParams) cmdParams).mConfirmMsg.text != null)
425                         && (((LaunchBrowserParams) cmdParams).mConfirmMsg.text.equals(STK_DEFAULT))) {
426                     message = mContext.getText(com.android.internal.R.string.launchBrowserDefault);
427                     ((LaunchBrowserParams) cmdParams).mConfirmMsg.text = message.toString();
428                 }
429                 break;
430             case SELECT_ITEM:
431             case GET_INPUT:
432             case GET_INKEY:
433                 break;
434             case SEND_DTMF:
435             case SEND_SMS:
436             case SEND_SS:
437             case SEND_USSD:
438                 if ((((DisplayTextParams)cmdParams).mTextMsg.text != null)
439                         && (((DisplayTextParams)cmdParams).mTextMsg.text.equals(STK_DEFAULT))) {
440                     message = mContext.getText(com.android.internal.R.string.sending);
441                     ((DisplayTextParams)cmdParams).mTextMsg.text = message.toString();
442                 }
443                 break;
444             case PLAY_TONE:
445                 break;
446             case SET_UP_CALL:
447                 if ((((CallSetupParams) cmdParams).mConfirmMsg.text != null)
448                         && (((CallSetupParams) cmdParams).mConfirmMsg.text.equals(STK_DEFAULT))) {
449                     message = mContext.getText(com.android.internal.R.string.SetupCallDefault);
450                     ((CallSetupParams) cmdParams).mConfirmMsg.text = message.toString();
451                 }
452                 break;
453             case OPEN_CHANNEL:
454             case CLOSE_CHANNEL:
455             case RECEIVE_DATA:
456             case SEND_DATA:
457                 BIPClientParams cmd = (BIPClientParams) cmdParams;
458                 /* Per 3GPP specification 102.223,
459                  * if the alpha identifier is not provided by the UICC,
460                  * the terminal MAY give information to the user
461                  * noAlphaUsrCnf defines if you need to show user confirmation or not
462                  */
463                 boolean noAlphaUsrCnf = false;
464                 try {
465                     noAlphaUsrCnf = mContext.getResources().getBoolean(
466                             com.android.internal.R.bool.config_stkNoAlphaUsrCnf);
467                 } catch (NotFoundException e) {
468                     noAlphaUsrCnf = false;
469                 }
470                 if ((cmd.mTextMsg.text == null) && (cmd.mHasAlphaId || noAlphaUsrCnf)) {
471                     CatLog.d(this, "cmd " + cmdParams.getCommandType() + " with null alpha id");
472                     // If alpha length is zero, we just respond with OK.
473                     if (isProactiveCmd) {
474                         sendTerminalResponse(cmdParams.mCmdDet, ResultCode.OK, false, 0, null);
475                     } else if (cmdParams.getCommandType() == CommandType.OPEN_CHANNEL) {
476                         mCmdIf.handleCallSetupRequestFromSim(true, null);
477                     }
478                     return;
479                 }
480                 // Respond with permanent failure to avoid retry if STK app is not present.
481                 if (!mStkAppInstalled) {
482                     CatLog.d(this, "No STK application found.");
483                     if (isProactiveCmd) {
484                         sendTerminalResponse(cmdParams.mCmdDet,
485                                              ResultCode.BEYOND_TERMINAL_CAPABILITY,
486                                              false, 0, null);
487                         return;
488                     }
489                 }
490                 /*
491                  * CLOSE_CHANNEL, RECEIVE_DATA and SEND_DATA can be delivered by
492                  * either PROACTIVE_COMMAND or EVENT_NOTIFY.
493                  * If PROACTIVE_COMMAND is used for those commands, send terminal
494                  * response here.
495                  */
496                 if (isProactiveCmd &&
497                     ((cmdParams.getCommandType() == CommandType.CLOSE_CHANNEL) ||
498                      (cmdParams.getCommandType() == CommandType.RECEIVE_DATA) ||
499                      (cmdParams.getCommandType() == CommandType.SEND_DATA))) {
500                     sendTerminalResponse(cmdParams.mCmdDet, ResultCode.OK, false, 0, null);
501                 }
502                 break;
503             default:
504                 CatLog.d(this, "Unsupported command");
505                 return;
506         }
507         mCurrntCmd = cmdMsg;
508         broadcastCatCmdIntent(cmdMsg);
509     }
510 
511 
broadcastCatCmdIntent(CatCmdMessage cmdMsg)512     private void broadcastCatCmdIntent(CatCmdMessage cmdMsg) {
513         Intent intent = new Intent(AppInterface.CAT_CMD_ACTION);
514         intent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY_BEFORE_BOOT);
515         intent.putExtra("STK CMD", cmdMsg);
516         intent.putExtra("SLOT_ID", mSlotId);
517         CatLog.d(this, "Sending CmdMsg: " + cmdMsg+ " on slotid:" + mSlotId);
518         mContext.sendBroadcast(intent, AppInterface.STK_PERMISSION);
519     }
520 
521     /**
522      * Handles RIL_UNSOL_STK_SESSION_END unsolicited command from RIL.
523      *
524      */
handleSessionEnd()525     private void handleSessionEnd() {
526         CatLog.d(this, "SESSION END on "+ mSlotId);
527 
528         mCurrntCmd = mMenuCmd;
529         Intent intent = new Intent(AppInterface.CAT_SESSION_END_ACTION);
530         intent.putExtra("SLOT_ID", mSlotId);
531         mContext.sendBroadcast(intent, AppInterface.STK_PERMISSION);
532     }
533 
534 
sendTerminalResponse(CommandDetails cmdDet, ResultCode resultCode, boolean includeAdditionalInfo, int additionalInfo, ResponseData resp)535     private void sendTerminalResponse(CommandDetails cmdDet,
536             ResultCode resultCode, boolean includeAdditionalInfo,
537             int additionalInfo, ResponseData resp) {
538 
539         if (cmdDet == null) {
540             return;
541         }
542         ByteArrayOutputStream buf = new ByteArrayOutputStream();
543 
544         Input cmdInput = null;
545         if (mCurrntCmd != null) {
546             cmdInput = mCurrntCmd.geInput();
547         }
548 
549         // command details
550         int tag = ComprehensionTlvTag.COMMAND_DETAILS.value();
551         if (cmdDet.compRequired) {
552             tag |= 0x80;
553         }
554         buf.write(tag);
555         buf.write(0x03); // length
556         buf.write(cmdDet.commandNumber);
557         buf.write(cmdDet.typeOfCommand);
558         buf.write(cmdDet.commandQualifier);
559 
560         // device identities
561         // According to TS102.223/TS31.111 section 6.8 Structure of
562         // TERMINAL RESPONSE, "For all SIMPLE-TLV objects with Min=N,
563         // the ME should set the CR(comprehension required) flag to
564         // comprehension not required.(CR=0)"
565         // Since DEVICE_IDENTITIES and DURATION TLVs have Min=N,
566         // the CR flag is not set.
567         tag = ComprehensionTlvTag.DEVICE_IDENTITIES.value();
568         buf.write(tag);
569         buf.write(0x02); // length
570         buf.write(DEV_ID_TERMINAL); // source device id
571         buf.write(DEV_ID_UICC); // destination device id
572 
573         // result
574         tag = ComprehensionTlvTag.RESULT.value();
575         if (cmdDet.compRequired) {
576             tag |= 0x80;
577         }
578         buf.write(tag);
579         int length = includeAdditionalInfo ? 2 : 1;
580         buf.write(length);
581         buf.write(resultCode.value());
582 
583         // additional info
584         if (includeAdditionalInfo) {
585             buf.write(additionalInfo);
586         }
587 
588         // Fill optional data for each corresponding command
589         if (resp != null) {
590             resp.format(buf);
591         } else {
592             encodeOptionalTags(cmdDet, resultCode, cmdInput, buf);
593         }
594 
595         byte[] rawData = buf.toByteArray();
596         String hexString = IccUtils.bytesToHexString(rawData);
597         if (DBG) {
598             CatLog.d(this, "TERMINAL RESPONSE: " + hexString);
599         }
600 
601         mCmdIf.sendTerminalResponse(hexString, null);
602     }
603 
encodeOptionalTags(CommandDetails cmdDet, ResultCode resultCode, Input cmdInput, ByteArrayOutputStream buf)604     private void encodeOptionalTags(CommandDetails cmdDet,
605             ResultCode resultCode, Input cmdInput, ByteArrayOutputStream buf) {
606         CommandType cmdType = AppInterface.CommandType.fromInt(cmdDet.typeOfCommand);
607         if (cmdType != null) {
608             switch (cmdType) {
609                 case GET_INKEY:
610                     // ETSI TS 102 384,27.22.4.2.8.4.2.
611                     // If it is a response for GET_INKEY command and the response timeout
612                     // occured, then add DURATION TLV for variable timeout case.
613                     if ((resultCode.value() == ResultCode.NO_RESPONSE_FROM_USER.value()) &&
614                         (cmdInput != null) && (cmdInput.duration != null)) {
615                         getInKeyResponse(buf, cmdInput);
616                     }
617                     break;
618                 case PROVIDE_LOCAL_INFORMATION:
619                     if ((cmdDet.commandQualifier == CommandParamsFactory.LANGUAGE_SETTING) &&
620                         (resultCode.value() == ResultCode.OK.value())) {
621                         getPliResponse(buf);
622                     }
623                     break;
624                 default:
625                     CatLog.d(this, "encodeOptionalTags() Unsupported Cmd details=" + cmdDet);
626                     break;
627             }
628         } else {
629             CatLog.d(this, "encodeOptionalTags() bad Cmd details=" + cmdDet);
630         }
631     }
632 
getInKeyResponse(ByteArrayOutputStream buf, Input cmdInput)633     private void getInKeyResponse(ByteArrayOutputStream buf, Input cmdInput) {
634         int tag = ComprehensionTlvTag.DURATION.value();
635 
636         buf.write(tag);
637         buf.write(0x02); // length
638         buf.write(cmdInput.duration.timeUnit.SECOND.value()); // Time (Unit,Seconds)
639         buf.write(cmdInput.duration.timeInterval); // Time Duration
640     }
641 
getPliResponse(ByteArrayOutputStream buf)642     private void getPliResponse(ByteArrayOutputStream buf) {
643         // Locale Language Setting
644         final String lang = Locale.getDefault().getLanguage();
645 
646         if (lang != null) {
647             // tag
648             int tag = ComprehensionTlvTag.LANGUAGE.value();
649             buf.write(tag);
650             ResponseData.writeLength(buf, lang.length());
651             buf.write(lang.getBytes(), 0, lang.length());
652         }
653     }
654 
sendMenuSelection(int menuId, boolean helpRequired)655     private void sendMenuSelection(int menuId, boolean helpRequired) {
656 
657         ByteArrayOutputStream buf = new ByteArrayOutputStream();
658 
659         // tag
660         int tag = BerTlv.BER_MENU_SELECTION_TAG;
661         buf.write(tag);
662 
663         // length
664         buf.write(0x00); // place holder
665 
666         // device identities
667         tag = 0x80 | ComprehensionTlvTag.DEVICE_IDENTITIES.value();
668         buf.write(tag);
669         buf.write(0x02); // length
670         buf.write(DEV_ID_KEYPAD); // source device id
671         buf.write(DEV_ID_UICC); // destination device id
672 
673         // item identifier
674         tag = 0x80 | ComprehensionTlvTag.ITEM_ID.value();
675         buf.write(tag);
676         buf.write(0x01); // length
677         buf.write(menuId); // menu identifier chosen
678 
679         // help request
680         if (helpRequired) {
681             tag = ComprehensionTlvTag.HELP_REQUEST.value();
682             buf.write(tag);
683             buf.write(0x00); // length
684         }
685 
686         byte[] rawData = buf.toByteArray();
687 
688         // write real length
689         int len = rawData.length - 2; // minus (tag + length)
690         rawData[1] = (byte) len;
691 
692         String hexString = IccUtils.bytesToHexString(rawData);
693 
694         mCmdIf.sendEnvelope(hexString, null);
695     }
696 
eventDownload(int event, int sourceId, int destinationId, byte[] additionalInfo, boolean oneShot)697     private void eventDownload(int event, int sourceId, int destinationId,
698             byte[] additionalInfo, boolean oneShot) {
699 
700         ByteArrayOutputStream buf = new ByteArrayOutputStream();
701 
702         // tag
703         int tag = BerTlv.BER_EVENT_DOWNLOAD_TAG;
704         buf.write(tag);
705 
706         // length
707         buf.write(0x00); // place holder, assume length < 128.
708 
709         // event list
710         tag = 0x80 | ComprehensionTlvTag.EVENT_LIST.value();
711         buf.write(tag);
712         buf.write(0x01); // length
713         buf.write(event); // event value
714 
715         // device identities
716         tag = 0x80 | ComprehensionTlvTag.DEVICE_IDENTITIES.value();
717         buf.write(tag);
718         buf.write(0x02); // length
719         buf.write(sourceId); // source device id
720         buf.write(destinationId); // destination device id
721 
722         /*
723          * Check for type of event download to be sent to UICC - Browser
724          * termination,Idle screen available, User activity, Language selection
725          * etc as mentioned under ETSI TS 102 223 section 7.5
726          */
727 
728         /*
729          * Currently the below events are supported:
730          * Language Selection Event.
731          * Other event download commands should be encoded similar way
732          */
733         /* TODO: eventDownload should be extended for other Envelope Commands */
734         switch (event) {
735             case IDLE_SCREEN_AVAILABLE_EVENT:
736                 CatLog.d(sInstance, " Sending Idle Screen Available event download to ICC");
737                 break;
738             case LANGUAGE_SELECTION_EVENT:
739                 CatLog.d(sInstance, " Sending Language Selection event download to ICC");
740                 tag = 0x80 | ComprehensionTlvTag.LANGUAGE.value();
741                 buf.write(tag);
742                 // Language length should be 2 byte
743                 buf.write(0x02);
744                 break;
745             default:
746                 break;
747         }
748 
749         // additional information
750         if (additionalInfo != null) {
751             for (byte b : additionalInfo) {
752                 buf.write(b);
753             }
754         }
755 
756         byte[] rawData = buf.toByteArray();
757 
758         // write real length
759         int len = rawData.length - 2; // minus (tag + length)
760         rawData[1] = (byte) len;
761 
762         String hexString = IccUtils.bytesToHexString(rawData);
763 
764         CatLog.d(this, "ENVELOPE COMMAND: " + hexString);
765 
766         mCmdIf.sendEnvelope(hexString, null);
767     }
768 
769     /**
770      * Used by application to get an AppInterface object.
771      *
772      * @return The only Service object in the system
773      */
774     //TODO Need to take care for MSIM
getInstance()775     public static AppInterface getInstance() {
776         int slotId = PhoneConstants.DEFAULT_CARD_INDEX;
777         SubscriptionController sControl = SubscriptionController.getInstance();
778         if (sControl != null) {
779             slotId = sControl.getSlotId(sControl.getDefaultSubId());
780         }
781         return getInstance(null, null, null, slotId);
782     }
783 
784     /**
785      * Used by application to get an AppInterface object.
786      *
787      * @return The only Service object in the system
788      */
getInstance(int slotId)789     public static AppInterface getInstance(int slotId) {
790         return getInstance(null, null, null, slotId);
791     }
792 
793     @Override
handleMessage(Message msg)794     public void handleMessage(Message msg) {
795         CatLog.d(this, "handleMessage[" + msg.what + "]");
796 
797         switch (msg.what) {
798         case MSG_ID_SESSION_END:
799         case MSG_ID_PROACTIVE_COMMAND:
800         case MSG_ID_EVENT_NOTIFY:
801         case MSG_ID_REFRESH:
802             CatLog.d(this, "ril message arrived,slotid:" + mSlotId);
803             String data = null;
804             if (msg.obj != null) {
805                 AsyncResult ar = (AsyncResult) msg.obj;
806                 if (ar != null && ar.result != null) {
807                     try {
808                         data = (String) ar.result;
809                     } catch (ClassCastException e) {
810                         break;
811                     }
812                 }
813             }
814             mMsgDecoder.sendStartDecodingMessageParams(new RilMessage(msg.what, data));
815             break;
816         case MSG_ID_CALL_SETUP:
817             mMsgDecoder.sendStartDecodingMessageParams(new RilMessage(msg.what, null));
818             break;
819         case MSG_ID_ICC_RECORDS_LOADED:
820             break;
821         case MSG_ID_RIL_MSG_DECODED:
822             handleRilMsg((RilMessage) msg.obj);
823             break;
824         case MSG_ID_RESPONSE:
825             handleCmdResponse((CatResponseMessage) msg.obj);
826             break;
827         case MSG_ID_ICC_CHANGED:
828             CatLog.d(this, "MSG_ID_ICC_CHANGED");
829             updateIccAvailability();
830             break;
831         case MSG_ID_ICC_REFRESH:
832             if (msg.obj != null) {
833                 AsyncResult ar = (AsyncResult) msg.obj;
834                 if (ar != null && ar.result != null) {
835                     broadcastCardStateAndIccRefreshResp(CardState.CARDSTATE_PRESENT,
836                                   (IccRefreshResponse) ar.result);
837                 } else {
838                     CatLog.d(this,"Icc REFRESH with exception: " + ar.exception);
839                 }
840             } else {
841                 CatLog.d(this, "IccRefresh Message is null");
842             }
843             break;
844         case MSG_ID_ALPHA_NOTIFY:
845             CatLog.d(this, "Received CAT CC Alpha message from card");
846             if (msg.obj != null) {
847                 AsyncResult ar = (AsyncResult) msg.obj;
848                 if (ar != null && ar.result != null) {
849                     broadcastAlphaMessage((String)ar.result);
850                 } else {
851                     CatLog.d(this, "CAT Alpha message: ar.result is null");
852                 }
853             } else {
854                 CatLog.d(this, "CAT Alpha message: msg.obj is null");
855             }
856             break;
857         default:
858             throw new AssertionError("Unrecognized CAT command: " + msg.what);
859         }
860     }
861 
862     /**
863      ** This function sends a CARD status (ABSENT, PRESENT, REFRESH) to STK_APP.
864      ** This is triggered during ICC_REFRESH or CARD STATE changes. In case
865      ** REFRESH, additional information is sent in 'refresh_result'
866      **
867      **/
broadcastCardStateAndIccRefreshResp(CardState cardState, IccRefreshResponse iccRefreshState)868     private void  broadcastCardStateAndIccRefreshResp(CardState cardState,
869             IccRefreshResponse iccRefreshState) {
870         Intent intent = new Intent(AppInterface.CAT_ICC_STATUS_CHANGE);
871         boolean cardPresent = (cardState == CardState.CARDSTATE_PRESENT);
872 
873         if (iccRefreshState != null) {
874             //This case is when MSG_ID_ICC_REFRESH is received.
875             intent.putExtra(AppInterface.REFRESH_RESULT, iccRefreshState.refreshResult);
876             CatLog.d(this, "Sending IccResult with Result: "
877                     + iccRefreshState.refreshResult);
878         }
879 
880         // This sends an intent with CARD_ABSENT (0 - false) /CARD_PRESENT (1 - true).
881         intent.putExtra(AppInterface.CARD_STATUS, cardPresent);
882         CatLog.d(this, "Sending Card Status: "
883                 + cardState + " " + "cardPresent: " + cardPresent);
884         mContext.sendBroadcast(intent, AppInterface.STK_PERMISSION);
885     }
886 
broadcastAlphaMessage(String alphaString)887     private void broadcastAlphaMessage(String alphaString) {
888         CatLog.d(this, "Broadcasting CAT Alpha message from card: " + alphaString);
889         Intent intent = new Intent(AppInterface.CAT_ALPHA_NOTIFY_ACTION);
890         intent.addFlags(Intent.FLAG_RECEIVER_FOREGROUND);
891         intent.putExtra(AppInterface.ALPHA_STRING, alphaString);
892         intent.putExtra("SLOT_ID", mSlotId);
893         mContext.sendBroadcast(intent, AppInterface.STK_PERMISSION);
894     }
895 
896     @Override
onCmdResponse(CatResponseMessage resMsg)897     public synchronized void onCmdResponse(CatResponseMessage resMsg) {
898         if (resMsg == null) {
899             return;
900         }
901         // queue a response message.
902         Message msg = obtainMessage(MSG_ID_RESPONSE, resMsg);
903         msg.sendToTarget();
904     }
905 
validateResponse(CatResponseMessage resMsg)906     private boolean validateResponse(CatResponseMessage resMsg) {
907         boolean validResponse = false;
908         if ((resMsg.mCmdDet.typeOfCommand == CommandType.SET_UP_EVENT_LIST.value())
909                 || (resMsg.mCmdDet.typeOfCommand == CommandType.SET_UP_MENU.value())) {
910             CatLog.d(this, "CmdType: " + resMsg.mCmdDet.typeOfCommand);
911             validResponse = true;
912         } else if (mCurrntCmd != null) {
913             validResponse = resMsg.mCmdDet.compareTo(mCurrntCmd.mCmdDet);
914             CatLog.d(this, "isResponse for last valid cmd: " + validResponse);
915         }
916         return validResponse;
917     }
918 
removeMenu(Menu menu)919     private boolean removeMenu(Menu menu) {
920         try {
921             if (menu.items.size() == 1 && menu.items.get(0) == null) {
922                 return true;
923             }
924         } catch (NullPointerException e) {
925             CatLog.d(this, "Unable to get Menu's items size");
926             return true;
927         }
928         return false;
929     }
930 
handleCmdResponse(CatResponseMessage resMsg)931     private void handleCmdResponse(CatResponseMessage resMsg) {
932         // Make sure the response details match the last valid command. An invalid
933         // response is a one that doesn't have a corresponding proactive command
934         // and sending it can "confuse" the baseband/ril.
935         // One reason for out of order responses can be UI glitches. For example,
936         // if the application launch an activity, and that activity is stored
937         // by the framework inside the history stack. That activity will be
938         // available for relaunch using the latest application dialog
939         // (long press on the home button). Relaunching that activity can send
940         // the same command's result again to the CatService and can cause it to
941         // get out of sync with the SIM. This can happen in case of
942         // non-interactive type Setup Event List and SETUP_MENU proactive commands.
943         // Stk framework would have already sent Terminal Response to Setup Event
944         // List and SETUP_MENU proactive commands. After sometime Stk app will send
945         // Envelope Command/Event Download. In which case, the response details doesn't
946         // match with last valid command (which are not related).
947         // However, we should allow Stk framework to send the message to ICC.
948         if (!validateResponse(resMsg)) {
949             return;
950         }
951         ResponseData resp = null;
952         boolean helpRequired = false;
953         CommandDetails cmdDet = resMsg.getCmdDetails();
954         AppInterface.CommandType type = AppInterface.CommandType.fromInt(cmdDet.typeOfCommand);
955 
956         switch (resMsg.mResCode) {
957         case HELP_INFO_REQUIRED:
958             helpRequired = true;
959             // fall through
960         case OK:
961         case PRFRMD_WITH_PARTIAL_COMPREHENSION:
962         case PRFRMD_WITH_MISSING_INFO:
963         case PRFRMD_WITH_ADDITIONAL_EFS_READ:
964         case PRFRMD_ICON_NOT_DISPLAYED:
965         case PRFRMD_MODIFIED_BY_NAA:
966         case PRFRMD_LIMITED_SERVICE:
967         case PRFRMD_WITH_MODIFICATION:
968         case PRFRMD_NAA_NOT_ACTIVE:
969         case PRFRMD_TONE_NOT_PLAYED:
970         case LAUNCH_BROWSER_ERROR:
971         case TERMINAL_CRNTLY_UNABLE_TO_PROCESS:
972             switch (type) {
973             case SET_UP_MENU:
974                 helpRequired = resMsg.mResCode == ResultCode.HELP_INFO_REQUIRED;
975                 sendMenuSelection(resMsg.mUsersMenuSelection, helpRequired);
976                 return;
977             case SELECT_ITEM:
978                 resp = new SelectItemResponseData(resMsg.mUsersMenuSelection);
979                 break;
980             case GET_INPUT:
981             case GET_INKEY:
982                 Input input = mCurrntCmd.geInput();
983                 if (!input.yesNo) {
984                     // when help is requested there is no need to send the text
985                     // string object.
986                     if (!helpRequired) {
987                         resp = new GetInkeyInputResponseData(resMsg.mUsersInput,
988                                 input.ucs2, input.packed);
989                     }
990                 } else {
991                     resp = new GetInkeyInputResponseData(
992                             resMsg.mUsersYesNoSelection);
993                 }
994                 break;
995             case DISPLAY_TEXT:
996                 if (resMsg.mResCode == ResultCode.TERMINAL_CRNTLY_UNABLE_TO_PROCESS) {
997                     // For screenbusy case there will be addtional information in the terminal
998                     // response. And the value of the additional information byte is 0x01.
999                     resMsg.setAdditionalInfo(0x01);
1000                 } else {
1001                     resMsg.mIncludeAdditionalInfo = false;
1002                     resMsg.mAdditionalInfo = 0;
1003                 }
1004                 break;
1005             case LAUNCH_BROWSER:
1006                 break;
1007             // 3GPP TS.102.223: Open Channel alpha confirmation should not send TR
1008             case OPEN_CHANNEL:
1009             case SET_UP_CALL:
1010                 mCmdIf.handleCallSetupRequestFromSim(resMsg.mUsersConfirm, null);
1011                 // No need to send terminal response for SET UP CALL. The user's
1012                 // confirmation result is send back using a dedicated ril message
1013                 // invoked by the CommandInterface call above.
1014                 mCurrntCmd = null;
1015                 return;
1016             case SET_UP_EVENT_LIST:
1017                 if (IDLE_SCREEN_AVAILABLE_EVENT == resMsg.mEventValue) {
1018                     eventDownload(resMsg.mEventValue, DEV_ID_DISPLAY, DEV_ID_UICC,
1019                             resMsg.mAddedInfo, false);
1020                  } else {
1021                      eventDownload(resMsg.mEventValue, DEV_ID_TERMINAL, DEV_ID_UICC,
1022                             resMsg.mAddedInfo, false);
1023                  }
1024                 // No need to send the terminal response after event download.
1025                 return;
1026             default:
1027                 break;
1028             }
1029             break;
1030         case BACKWARD_MOVE_BY_USER:
1031         case USER_NOT_ACCEPT:
1032             // if the user dismissed the alert dialog for a
1033             // setup call/open channel, consider that as the user
1034             // rejecting the call. Use dedicated API for this, rather than
1035             // sending a terminal response.
1036             if (type == CommandType.SET_UP_CALL || type == CommandType.OPEN_CHANNEL) {
1037                 mCmdIf.handleCallSetupRequestFromSim(false, null);
1038                 mCurrntCmd = null;
1039                 return;
1040             } else {
1041                 resp = null;
1042             }
1043             break;
1044         case NO_RESPONSE_FROM_USER:
1045         case UICC_SESSION_TERM_BY_USER:
1046             resp = null;
1047             break;
1048         default:
1049             return;
1050         }
1051         sendTerminalResponse(cmdDet, resMsg.mResCode, resMsg.mIncludeAdditionalInfo,
1052                 resMsg.mAdditionalInfo, resp);
1053         mCurrntCmd = null;
1054     }
1055 
isStkAppInstalled()1056     private boolean isStkAppInstalled() {
1057         Intent intent = new Intent(AppInterface.CAT_CMD_ACTION);
1058         PackageManager pm = mContext.getPackageManager();
1059         List<ResolveInfo> broadcastReceivers =
1060                             pm.queryBroadcastReceivers(intent, PackageManager.GET_META_DATA);
1061         int numReceiver = broadcastReceivers == null ? 0 : broadcastReceivers.size();
1062 
1063         return (numReceiver > 0);
1064     }
1065 
update(CommandsInterface ci, Context context, UiccCard ic)1066     public void update(CommandsInterface ci,
1067             Context context, UiccCard ic) {
1068         UiccCardApplication ca = null;
1069         IccRecords ir = null;
1070 
1071         if (ic != null) {
1072             /* Since Cat is not tied to any application, but rather is Uicc application
1073              * in itself - just get first FileHandler and IccRecords object
1074              */
1075             ca = ic.getApplicationIndex(0);
1076             if (ca != null) {
1077                 ir = ca.getIccRecords();
1078             }
1079         }
1080 
1081         synchronized (sInstanceLock) {
1082             if ((ir != null) && (mIccRecords != ir)) {
1083                 if (mIccRecords != null) {
1084                     mIccRecords.unregisterForRecordsLoaded(this);
1085                 }
1086 
1087                 CatLog.d(this,
1088                         "Reinitialize the Service with SIMRecords and UiccCardApplication");
1089                 mIccRecords = ir;
1090                 mUiccApplication = ca;
1091 
1092                 // re-Register for SIM ready event.
1093                 mIccRecords.registerForRecordsLoaded(this, MSG_ID_ICC_RECORDS_LOADED, null);
1094                 CatLog.d(this, "registerForRecordsLoaded slotid=" + mSlotId + " instance:" + this);
1095             }
1096         }
1097     }
1098 
updateIccAvailability()1099     void updateIccAvailability() {
1100         if (null == mUiccController) {
1101             return;
1102         }
1103 
1104         CardState newState = CardState.CARDSTATE_ABSENT;
1105         UiccCard newCard = mUiccController.getUiccCard(mSlotId);
1106         if (newCard != null) {
1107             newState = newCard.getCardState();
1108         }
1109         CardState oldState = mCardState;
1110         mCardState = newState;
1111         CatLog.d(this,"New Card State = " + newState + " " + "Old Card State = " + oldState);
1112         if (oldState == CardState.CARDSTATE_PRESENT &&
1113                 newState != CardState.CARDSTATE_PRESENT) {
1114             broadcastCardStateAndIccRefreshResp(newState, null);
1115         } else if (oldState != CardState.CARDSTATE_PRESENT &&
1116                 newState == CardState.CARDSTATE_PRESENT) {
1117             // Card moved to PRESENT STATE.
1118             mCmdIf.reportStkServiceIsRunning(null);
1119         }
1120     }
1121 }
1122