1 /* 2 * Copyright (C) 2014 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; 18 19 import android.content.ContentResolver; 20 import android.content.Context; 21 import android.database.Cursor; 22 import android.telephony.Rlog; 23 24 import com.android.internal.telephony.HbpcdLookup.ArbitraryMccSidMatch; 25 import com.android.internal.telephony.HbpcdLookup.MccIdd; 26 import com.android.internal.telephony.HbpcdLookup.MccLookup; 27 import com.android.internal.telephony.HbpcdLookup.MccSidConflicts; 28 import com.android.internal.telephony.HbpcdLookup.MccSidRange; 29 30 public final class HbpcdUtils { 31 private static final String LOG_TAG = "HbpcdUtils"; 32 private static final boolean DBG = false; 33 private ContentResolver resolver = null; 34 HbpcdUtils(Context context)35 public HbpcdUtils(Context context) { 36 resolver = context.getContentResolver(); 37 } 38 39 /** 40 * Resolves the unknown MCC with SID and Timezone information. 41 */ getMcc(int sid, int tz, int DSTflag, boolean isNitzTimeZone)42 public int getMcc(int sid, int tz, int DSTflag, boolean isNitzTimeZone) { 43 int tmpMcc = 0; 44 45 // check if SID exists in arbitrary_mcc_sid_match table. 46 // these SIDs are assigned to more than 1 operators, but they are known to 47 // be used by a specific operator, other operators having the same SID are 48 // not using it currently, if that SID is in this table, we don't need to 49 // check other tables. 50 String projection2[] = {ArbitraryMccSidMatch.MCC}; 51 Cursor c2 = resolver.query(ArbitraryMccSidMatch.CONTENT_URI, projection2, 52 ArbitraryMccSidMatch.SID + "=" + sid, null, null); 53 54 if (c2 != null) { 55 int c2Counter = c2.getCount(); 56 if (DBG) { 57 Rlog.d(LOG_TAG, "Query unresolved arbitrary table, entries are " + c2Counter); 58 } 59 if (c2Counter == 1) { 60 if (DBG) { 61 Rlog.d(LOG_TAG, "Query Unresolved arbitrary returned the cursor " + c2); 62 } 63 c2.moveToFirst(); 64 tmpMcc = c2.getInt(0); 65 if (DBG) { 66 Rlog.d(LOG_TAG, "MCC found in arbitrary_mcc_sid_match: " + tmpMcc); 67 } 68 c2.close(); 69 return tmpMcc; 70 } 71 c2.close(); 72 } 73 74 // Then check if SID exists in mcc_sid_conflict table. 75 // and use the timezone in mcc_lookup table to check which MCC matches. 76 String projection3[] = {MccSidConflicts.MCC}; 77 Cursor c3 = resolver.query(MccSidConflicts.CONTENT_URI, projection3, 78 MccSidConflicts.SID_CONFLICT + "=" + sid + " and (((" + 79 MccLookup.GMT_OFFSET_LOW + "<=" + tz + ") and (" + tz + "<=" + 80 MccLookup.GMT_OFFSET_HIGH + ") and (" + "0=" + DSTflag + ")) or ((" + 81 MccLookup.GMT_DST_LOW + "<=" + tz + ") and (" + tz + "<=" + 82 MccLookup.GMT_DST_HIGH + ") and (" + "1=" + DSTflag + ")))", 83 null, null); 84 if (c3 != null) { 85 int c3Counter = c3.getCount(); 86 if (c3Counter > 0) { 87 if (c3Counter > 1) { 88 Rlog.w(LOG_TAG, "something wrong, get more results for 1 conflict SID: " + c3); 89 } 90 if (DBG) Rlog.d(LOG_TAG, "Query conflict sid returned the cursor " + c3); 91 c3.moveToFirst(); 92 tmpMcc = c3.getInt(0); 93 if (DBG) { 94 Rlog.d(LOG_TAG, "MCC found in mcc_lookup_table. Return tmpMcc = " + tmpMcc); 95 } 96 if (!isNitzTimeZone) { 97 // time zone is not accurate, it may get wrong mcc, ignore it. 98 if (DBG) { 99 Rlog.d(LOG_TAG, "time zone is not accurate, mcc may be " + tmpMcc); 100 } 101 tmpMcc = 0; 102 } 103 c3.close(); 104 return tmpMcc; 105 } else { 106 c3.close(); 107 } 108 } 109 110 // if there is no conflict, then check if SID is in mcc_sid_range. 111 String projection5[] = {MccSidRange.MCC}; 112 Cursor c5 = resolver.query(MccSidRange.CONTENT_URI, projection5, 113 MccSidRange.RANGE_LOW + "<=" + sid + " and " + 114 MccSidRange.RANGE_HIGH + ">=" + sid, 115 null, null); 116 if (c5 != null) { 117 if (c5.getCount() > 0) { 118 if (DBG) Rlog.d(LOG_TAG, "Query Range returned the cursor " + c5); 119 c5.moveToFirst(); 120 tmpMcc = c5.getInt(0); 121 if (DBG) Rlog.d(LOG_TAG, "SID found in mcc_sid_range. Return tmpMcc = " + tmpMcc); 122 c5.close(); 123 return tmpMcc; 124 } 125 c5.close(); 126 } 127 if (DBG) Rlog.d(LOG_TAG, "SID NOT found in mcc_sid_range."); 128 129 if (DBG) Rlog.d(LOG_TAG, "Exit getMccByOtherFactors. Return tmpMcc = " + tmpMcc); 130 // If unknown MCC still could not be resolved, 131 return tmpMcc; 132 } 133 134 /** 135 * Gets country information with given MCC. 136 */ getIddByMcc(int mcc)137 public String getIddByMcc(int mcc) { 138 if (DBG) Rlog.d(LOG_TAG, "Enter getHbpcdInfoByMCC."); 139 String idd = ""; 140 141 Cursor c = null; 142 143 String projection[] = {MccIdd.IDD}; 144 Cursor cur = resolver.query(MccIdd.CONTENT_URI, projection, 145 MccIdd.MCC + "=" + mcc, null, null); 146 if (cur != null) { 147 if (cur.getCount() > 0) { 148 if (DBG) Rlog.d(LOG_TAG, "Query Idd returned the cursor " + cur); 149 // TODO: for those country having more than 1 IDDs, need more information 150 // to decide which IDD would be used. currently just use the first 1. 151 cur.moveToFirst(); 152 idd = cur.getString(0); 153 if (DBG) Rlog.d(LOG_TAG, "IDD = " + idd); 154 155 } 156 cur.close(); 157 } 158 if (c != null) c.close(); 159 160 if (DBG) Rlog.d(LOG_TAG, "Exit getHbpcdInfoByMCC."); 161 return idd; 162 } 163 } 164