1/*
2 * Copyright (C) 2006, 2012 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
17package com.android.internal.telephony;
18
19import static android.Manifest.permission.READ_PHONE_STATE;
20import android.app.ActivityManagerNative;
21import android.app.AlertDialog;
22import android.content.Context;
23import android.content.DialogInterface;
24import android.content.Intent;
25import android.content.res.Resources;
26import android.os.AsyncResult;
27import android.os.Handler;
28import android.os.Message;
29import android.os.PowerManager;
30import android.os.Registrant;
31import android.os.RegistrantList;
32import android.util.Log;
33import android.view.WindowManager;
34
35import com.android.internal.telephony.PhoneBase;
36import com.android.internal.telephony.CommandsInterface.RadioState;
37import com.android.internal.telephony.IccCardConstants.State;
38import com.android.internal.telephony.IccCardApplicationStatus;
39import com.android.internal.telephony.IccCardApplicationStatus.AppType;
40import com.android.internal.telephony.IccCardStatus.CardState;
41import com.android.internal.telephony.IccCardStatus.PinState;
42import com.android.internal.telephony.gsm.GSMPhone;
43import com.android.internal.telephony.gsm.SIMFileHandler;
44import com.android.internal.telephony.gsm.SIMRecords;
45import com.android.internal.telephony.uicc.UiccController;
46import com.android.internal.telephony.cat.CatService;
47import com.android.internal.telephony.cdma.CDMALTEPhone;
48import com.android.internal.telephony.cdma.CDMAPhone;
49import com.android.internal.telephony.cdma.CdmaSubscriptionSourceManager;
50import com.android.internal.telephony.cdma.RuimFileHandler;
51import com.android.internal.telephony.cdma.RuimRecords;
52
53import android.os.SystemProperties;
54
55import com.android.internal.R;
56
57/**
58 * {@hide}
59 */
60public class UiccCard {
61    protected static final String LOG_TAG = "RIL_UiccCard";
62    protected static final boolean DBG = true;
63
64    private final Object mLock = new Object();
65    private CardState mCardState;
66    private PinState mUniversalPinState;
67    private int mGsmUmtsSubscriptionAppIndex;
68    private int mCdmaSubscriptionAppIndex;
69    private int mImsSubscriptionAppIndex;
70    private UiccCardApplication[] mUiccApplications =
71            new UiccCardApplication[IccCardStatus.CARD_MAX_APPS];
72    private Context mContext;
73    private CommandsInterface mCi;
74    private CatService mCatService;
75    private boolean mDestroyed = false; //set to true once this card is commanded to be disposed of.
76    private RadioState mLastRadioState =  RadioState.RADIO_UNAVAILABLE;
77
78    private RegistrantList mAbsentRegistrants = new RegistrantList();
79
80    private static final int EVENT_CARD_REMOVED = 13;
81    private static final int EVENT_CARD_ADDED = 14;
82
83    public UiccCard(Context c, CommandsInterface ci, IccCardStatus ics) {
84        if (DBG) log("Creating");
85        mCardState = ics.mCardState;
86        update(c, ci, ics);
87    }
88
89    public void dispose() {
90        synchronized (mLock) {
91            if (DBG) log("Disposing card");
92            if (mCatService != null) mCatService.dispose();
93            for (UiccCardApplication app : mUiccApplications) {
94                if (app != null) {
95                    app.dispose();
96                }
97            }
98            mCatService = null;
99            mUiccApplications = null;
100        }
101    }
102
103    public void update(Context c, CommandsInterface ci, IccCardStatus ics) {
104        synchronized (mLock) {
105            if (mDestroyed) {
106                loge("Updated after destroyed! Fix me!");
107                return;
108            }
109            CardState oldState = mCardState;
110            mCardState = ics.mCardState;
111            mUniversalPinState = ics.mUniversalPinState;
112            mGsmUmtsSubscriptionAppIndex = ics.mGsmUmtsSubscriptionAppIndex;
113            mCdmaSubscriptionAppIndex = ics.mCdmaSubscriptionAppIndex;
114            mImsSubscriptionAppIndex = ics.mImsSubscriptionAppIndex;
115            mContext = c;
116            mCi = ci;
117            //update applications
118            if (DBG) log(ics.mApplications.length + " applications");
119            for ( int i = 0; i < mUiccApplications.length; i++) {
120                if (mUiccApplications[i] == null) {
121                    //Create newly added Applications
122                    if (i < ics.mApplications.length) {
123                        mUiccApplications[i] = new UiccCardApplication(this,
124                                ics.mApplications[i], mContext, mCi);
125                    }
126                } else if (i >= ics.mApplications.length) {
127                    //Delete removed applications
128                    mUiccApplications[i].dispose();
129                    mUiccApplications[i] = null;
130                } else {
131                    //Update the rest
132                    mUiccApplications[i].update(ics.mApplications[i], mContext, mCi);
133                }
134            }
135
136            if (mUiccApplications.length > 0 && mUiccApplications[0] != null) {
137                // Initialize or Reinitialize CatService
138                mCatService = CatService.getInstance(mCi,
139                                                     mContext,
140                                                     this);
141            } else {
142                if (mCatService != null) {
143                    mCatService.dispose();
144                }
145                mCatService = null;
146            }
147
148            sanitizeApplicationIndexes();
149
150            RadioState radioState = mCi.getRadioState();
151            if (DBG) log("update: radioState=" + radioState + " mLastRadioState="
152                    + mLastRadioState);
153            // No notifications while radio is off or we just powering up
154            if (radioState == RadioState.RADIO_ON && mLastRadioState == RadioState.RADIO_ON) {
155                if (oldState != CardState.CARDSTATE_ABSENT &&
156                        mCardState == CardState.CARDSTATE_ABSENT) {
157                    if (DBG) log("update: notify card removed");
158                    mAbsentRegistrants.notifyRegistrants();
159                    mHandler.sendMessage(mHandler.obtainMessage(EVENT_CARD_REMOVED, null));
160                } else if (oldState == CardState.CARDSTATE_ABSENT &&
161                        mCardState != CardState.CARDSTATE_ABSENT) {
162                    if (DBG) log("update: notify card added");
163                    mHandler.sendMessage(mHandler.obtainMessage(EVENT_CARD_ADDED, null));
164                }
165            }
166            mLastRadioState = radioState;
167        }
168    }
169
170    protected void finalize() {
171        if (DBG) log("UiccCard finalized");
172    }
173
174    /**
175     * This function makes sure that application indexes are valid
176     * and resets invalid indexes. (This should never happen, but in case
177     * RIL misbehaves we need to manage situation gracefully)
178     */
179    private void sanitizeApplicationIndexes() {
180        mGsmUmtsSubscriptionAppIndex =
181                checkIndex(mGsmUmtsSubscriptionAppIndex, AppType.APPTYPE_SIM, AppType.APPTYPE_USIM);
182        mCdmaSubscriptionAppIndex =
183                checkIndex(mCdmaSubscriptionAppIndex, AppType.APPTYPE_RUIM, AppType.APPTYPE_CSIM);
184        mImsSubscriptionAppIndex =
185                checkIndex(mImsSubscriptionAppIndex, AppType.APPTYPE_ISIM, null);
186    }
187
188    private int checkIndex(int index, AppType expectedAppType, AppType altExpectedAppType) {
189        if (mUiccApplications == null || index >= mUiccApplications.length) {
190            loge("App index " + index + " is invalid since there are no applications");
191            return -1;
192        }
193
194        if (index < 0) {
195            // This is normal. (i.e. no application of this type)
196            return -1;
197        }
198
199        if (mUiccApplications[index].getType() != expectedAppType &&
200            mUiccApplications[index].getType() != altExpectedAppType) {
201            loge("App index " + index + " is invalid since it's not " +
202                    expectedAppType + " and not " + altExpectedAppType);
203            return -1;
204        }
205
206        // Seems to be valid
207        return index;
208    }
209
210    /**
211     * Notifies handler of any transition into State.ABSENT
212     */
213    public void registerForAbsent(Handler h, int what, Object obj) {
214        synchronized (mLock) {
215            Registrant r = new Registrant (h, what, obj);
216
217            mAbsentRegistrants.add(r);
218
219            if (mCardState == CardState.CARDSTATE_ABSENT) {
220                r.notifyRegistrant();
221            }
222        }
223    }
224
225    public void unregisterForAbsent(Handler h) {
226        synchronized (mLock) {
227            mAbsentRegistrants.remove(h);
228        }
229    }
230
231    private void onIccSwap(boolean isAdded) {
232        synchronized (mLock) {
233            // TODO: Here we assume the device can't handle SIM hot-swap
234            //      and has to reboot. We may want to add a property,
235            //      e.g. REBOOT_ON_SIM_SWAP, to indicate if modem support
236            //      hot-swap.
237            DialogInterface.OnClickListener listener = null;
238
239
240            // TODO: SimRecords is not reset while SIM ABSENT (only reset while
241            //       Radio_off_or_not_available). Have to reset in both both
242            //       added or removed situation.
243            listener = new DialogInterface.OnClickListener() {
244                @Override
245                public void onClick(DialogInterface dialog, int which) {
246                    synchronized (mLock) {
247                        if (which == DialogInterface.BUTTON_POSITIVE) {
248                            if (DBG) log("Reboot due to SIM swap");
249                            PowerManager pm = (PowerManager) mContext
250                                    .getSystemService(Context.POWER_SERVICE);
251                            pm.reboot("SIM is added.");
252                        }
253                    }
254                }
255
256            };
257
258            Resources r = Resources.getSystem();
259
260            String title = (isAdded) ? r.getString(R.string.sim_added_title) :
261                r.getString(R.string.sim_removed_title);
262            String message = (isAdded) ? r.getString(R.string.sim_added_message) :
263                r.getString(R.string.sim_removed_message);
264            String buttonTxt = r.getString(R.string.sim_restart_button);
265
266            AlertDialog dialog = new AlertDialog.Builder(mContext)
267            .setTitle(title)
268            .setMessage(message)
269            .setPositiveButton(buttonTxt, listener)
270            .create();
271            dialog.getWindow().setType(WindowManager.LayoutParams.TYPE_SYSTEM_ALERT);
272            dialog.show();
273        }
274    }
275
276    protected Handler mHandler = new Handler() {
277        @Override
278        public void handleMessage(Message msg){
279            if (mDestroyed) {
280                loge("Received message " + msg + "[" + msg.what
281                        + "] while being destroyed. Ignoring.");
282                return;
283            }
284
285            switch (msg.what) {
286                case EVENT_CARD_REMOVED:
287                    onIccSwap(false);
288                    break;
289                case EVENT_CARD_ADDED:
290                    onIccSwap(true);
291                    break;
292                default:
293                    loge("Unknown Event " + msg.what);
294            }
295        }
296    };
297
298    public boolean isApplicationOnIcc(IccCardApplicationStatus.AppType type) {
299        synchronized (mLock) {
300            for (int i = 0 ; i < mUiccApplications.length; i++) {
301                if (mUiccApplications[i] != null && mUiccApplications[i].getType() == type) {
302                    return true;
303                }
304            }
305            return false;
306        }
307    }
308
309    public CardState getCardState() {
310        synchronized (mLock) {
311            return mCardState;
312        }
313    }
314
315    public PinState getUniversalPinState() {
316        synchronized (mLock) {
317            return mUniversalPinState;
318        }
319    }
320
321    public UiccCardApplication getApplication(int family) {
322        synchronized (mLock) {
323            int index = IccCardStatus.CARD_MAX_APPS;
324            switch (family) {
325                case UiccController.APP_FAM_3GPP:
326                    index = mGsmUmtsSubscriptionAppIndex;
327                    break;
328                case UiccController.APP_FAM_3GPP2:
329                    index = mCdmaSubscriptionAppIndex;
330                    break;
331                case UiccController.APP_FAM_IMS:
332                    index = mImsSubscriptionAppIndex;
333                    break;
334            }
335            if (index >= 0 && index < mUiccApplications.length) {
336                return mUiccApplications[index];
337            }
338            return null;
339        }
340    }
341
342    public UiccCardApplication getApplicationIndex(int index) {
343        synchronized (mLock) {
344            if (index >= 0 && index < mUiccApplications.length) {
345                return mUiccApplications[index];
346            }
347            return null;
348        }
349    }
350
351    private void log(String msg) {
352        Log.d(LOG_TAG, msg);
353    }
354
355    private void loge(String msg) {
356        Log.e(LOG_TAG, msg);
357    }
358}
359