164 lines
6.4 KiB
Java
164 lines
6.4 KiB
Java
/*
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* Copyright (C) 2014 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package com.android.internal.telephony;
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import android.content.ContentResolver;
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import android.content.Context;
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import android.database.Cursor;
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import android.util.Log;
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import com.android.internal.telephony.HbpcdLookup.ArbitraryMccSidMatch;
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import com.android.internal.telephony.HbpcdLookup.MccIdd;
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import com.android.internal.telephony.HbpcdLookup.MccLookup;
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import com.android.internal.telephony.HbpcdLookup.MccSidConflicts;
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import com.android.internal.telephony.HbpcdLookup.MccSidRange;
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public final class HbpcdUtils {
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private static final String LOG_TAG = "HbpcdUtils";
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private static final boolean DBG = false;
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private ContentResolver resolver = null;
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public HbpcdUtils(Context context) {
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resolver = context.getContentResolver();
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}
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/**
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* Resolves the unknown MCC with SID and Timezone information.
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*/
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public int getMcc(int sid, int tz, int DSTflag, boolean isNitzTimeZone) {
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int tmpMcc = 0;
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// check if SID exists in arbitrary_mcc_sid_match table.
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// these SIDs are assigned to more than 1 operators, but they are known to
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// be used by a specific operator, other operators having the same SID are
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// not using it currently, if that SID is in this table, we don't need to
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// check other tables.
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String projection2[] = {ArbitraryMccSidMatch.MCC};
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Cursor c2 = resolver.query(ArbitraryMccSidMatch.CONTENT_URI, projection2,
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ArbitraryMccSidMatch.SID + "=" + sid, null, null);
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if (c2 != null) {
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int c2Counter = c2.getCount();
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if (DBG) {
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Log.d(LOG_TAG, "Query unresolved arbitrary table, entries are " + c2Counter);
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}
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if (c2Counter == 1) {
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if (DBG) {
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Log.d(LOG_TAG, "Query Unresolved arbitrary returned the cursor " + c2);
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}
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c2.moveToFirst();
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tmpMcc = c2.getInt(0);
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if (DBG) {
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Log.d(LOG_TAG, "MCC found in arbitrary_mcc_sid_match: " + tmpMcc);
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}
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c2.close();
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return tmpMcc;
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}
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c2.close();
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}
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// Then check if SID exists in mcc_sid_conflict table.
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// and use the timezone in mcc_lookup table to check which MCC matches.
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String projection3[] = {MccSidConflicts.MCC};
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Cursor c3 = resolver.query(MccSidConflicts.CONTENT_URI, projection3,
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MccSidConflicts.SID_CONFLICT + "=" + sid + " and (((" +
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MccLookup.GMT_OFFSET_LOW + "<=" + tz + ") and (" + tz + "<=" +
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MccLookup.GMT_OFFSET_HIGH + ") and (" + "0=" + DSTflag + ")) or ((" +
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MccLookup.GMT_DST_LOW + "<=" + tz + ") and (" + tz + "<=" +
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MccLookup.GMT_DST_HIGH + ") and (" + "1=" + DSTflag + ")))",
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null, null);
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if (c3 != null) {
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int c3Counter = c3.getCount();
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if (c3Counter > 0) {
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if (c3Counter > 1) {
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Log.w(LOG_TAG, "something wrong, get more results for 1 conflict SID: " + c3);
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}
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if (DBG) Log.d(LOG_TAG, "Query conflict sid returned the cursor " + c3);
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c3.moveToFirst();
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tmpMcc = c3.getInt(0);
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if (DBG) {
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Log.d(LOG_TAG, "MCC found in mcc_lookup_table. Return tmpMcc = " + tmpMcc);
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}
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if (!isNitzTimeZone) {
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// time zone is not accurate, it may get wrong mcc, ignore it.
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if (DBG) {
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Log.d(LOG_TAG, "time zone is not accurate, mcc may be " + tmpMcc);
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}
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tmpMcc = 0;
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}
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c3.close();
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return tmpMcc;
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} else {
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c3.close();
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}
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}
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// if there is no conflict, then check if SID is in mcc_sid_range.
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String projection5[] = {MccSidRange.MCC};
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Cursor c5 = resolver.query(MccSidRange.CONTENT_URI, projection5,
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MccSidRange.RANGE_LOW + "<=" + sid + " and " +
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MccSidRange.RANGE_HIGH + ">=" + sid,
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null, null);
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if (c5 != null) {
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if (c5.getCount() > 0) {
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if (DBG) Log.d(LOG_TAG, "Query Range returned the cursor " + c5);
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c5.moveToFirst();
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tmpMcc = c5.getInt(0);
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if (DBG) Log.d(LOG_TAG, "SID found in mcc_sid_range. Return tmpMcc = " + tmpMcc);
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c5.close();
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return tmpMcc;
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}
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c5.close();
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}
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if (DBG) Log.d(LOG_TAG, "SID NOT found in mcc_sid_range.");
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if (DBG) Log.d(LOG_TAG, "Exit getMccByOtherFactors. Return tmpMcc = " + tmpMcc);
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// If unknown MCC still could not be resolved,
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return tmpMcc;
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}
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/**
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* Gets country information with given MCC.
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*/
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public String getIddByMcc(int mcc) {
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if (DBG) Log.d(LOG_TAG, "Enter getHbpcdInfoByMCC.");
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String idd = "";
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Cursor c = null;
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String projection[] = {MccIdd.IDD};
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Cursor cur = resolver.query(MccIdd.CONTENT_URI, projection,
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MccIdd.MCC + "=" + mcc, null, null);
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if (cur != null) {
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if (cur.getCount() > 0) {
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if (DBG) Log.d(LOG_TAG, "Query Idd returned the cursor " + cur);
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// TODO: for those country having more than 1 IDDs, need more information
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// to decide which IDD would be used. currently just use the first 1.
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cur.moveToFirst();
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idd = cur.getString(0);
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if (DBG) Log.d(LOG_TAG, "IDD = " + idd);
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}
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cur.close();
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}
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if (c != null) c.close();
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if (DBG) Log.d(LOG_TAG, "Exit getHbpcdInfoByMCC.");
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return idd;
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}
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}
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