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135 lines
6.2 KiB
Diff
135 lines
6.2 KiB
Diff
From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
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From: Mattias Nilsson <mattias.nilsson@sony.com>
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Date: Fri, 13 Nov 2020 22:30:08 +0100
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Subject: [PATCH] Mcc and mnc from xml in RRO may be integers
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Mcc and mnc in an xml from overlays built in current android build
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system are integers to the contrary of the apns-full-conf.xml
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where they are strings. The telephony provider uses the same parsing
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mechanism in both cases which makes the full apn list get
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correct values whereas the provider misjudge what it should
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insert in the database when there is an apns.xml in an overlay.
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For the newly built android RROs mnc="01" becomes mnc="1" and no
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match is found when the sim card is inserted.
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To not risk the large APN list we only change the behavior for the
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overlay handling.
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Solution is to format the mcc value to have 3 digits and use the
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carrier id table to get correct mnc. Sim cards missing
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in the carrier id table need to be added there.
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Test: Manual
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Test: adb shell content query --uri content://telephony/carriers
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Bug: 175620622
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Change-Id: I244ad0f76f360a0635343187e455b54c90ec45b4
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---
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.../telephony/TelephonyProvider.java | 35 ++++++++++++-------
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1 file changed, 23 insertions(+), 12 deletions(-)
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diff --git a/src/com/android/providers/telephony/TelephonyProvider.java b/src/com/android/providers/telephony/TelephonyProvider.java
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index 3cb4abeb..b1b3146d 100644
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--- a/src/com/android/providers/telephony/TelephonyProvider.java
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+++ b/src/com/android/providers/telephony/TelephonyProvider.java
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@@ -128,6 +128,7 @@ import java.io.FileNotFoundException;
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import java.io.FileReader;
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import java.io.IOException;
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import java.io.InputStream;
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+import java.lang.Integer;
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import java.util.ArrayList;
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import java.util.Arrays;
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import java.util.concurrent.atomic.AtomicBoolean;
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@@ -752,7 +753,7 @@ public class TelephonyProvider extends ContentProvider
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try {
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XmlUtils.beginDocument(parser, "apns");
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publicversion = Integer.parseInt(parser.getAttributeValue(null, "version"));
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- loadApns(db, parser);
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+ loadApns(db, parser, true);
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} catch (Exception e) {
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loge("Got exception while loading APN database." + e);
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} finally {
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@@ -782,7 +783,7 @@ public class TelephonyProvider extends ContentProvider
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+ confFile.getAbsolutePath());
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}
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- loadApns(db, confparser);
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+ loadApns(db, confparser, false);
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} catch (FileNotFoundException e) {
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// It's ok if the file isn't found. It means there isn't a confidential file
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// Log.e(TAG, "File not found: '" + confFile.getAbsolutePath() + "'");
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@@ -1665,7 +1666,7 @@ public class TelephonyProvider extends ContentProvider
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try {
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XmlUtils.nextElement(parser);
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while (parser.getEventType() != XmlPullParser.END_DOCUMENT) {
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- ContentValues row = getRow(parser);
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+ ContentValues row = getRow(parser, false);
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if (row == null) {
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throw new XmlPullParserException("Expected 'apn' tag", parser, null);
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}
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@@ -2072,9 +2073,10 @@ public class TelephonyProvider extends ContentProvider
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* Gets the next row of apn values.
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*
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* @param parser the parser
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+ * @param isOverlay If the xml file comes from an overlay MCC/MNC are treated as integers
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* @return the row or null if it's not an apn
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*/
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- private ContentValues getRow(XmlPullParser parser) {
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+ private ContentValues getRow(XmlPullParser parser, boolean isOverlay) {
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if (!"apn".equals(parser.getName())) {
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return null;
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}
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@@ -2083,11 +2085,21 @@ public class TelephonyProvider extends ContentProvider
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String mcc = parser.getAttributeValue(null, "mcc");
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String mnc = parser.getAttributeValue(null, "mnc");
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- String numeric = mcc + mnc;
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-
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+ String mccString = mcc;
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+ String mncString = mnc;
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+ // Since an mnc can have both two and three digits and it is hard to verify
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+ // all OEM's Global APN lists we only do this for overlays.
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+ if (isOverlay) {
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+ mccString = String.format("%03d", Integer.parseInt(mcc));
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+ // Looks up a two digit mnc in the carrier id DB
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+ // if not found a three digit mnc value is chosen
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+ mncString = getBestStringMnc(mContext, mccString, Integer.parseInt(mnc));
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+ }
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+
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+ String numeric = mccString + mncString;
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map.put(NUMERIC, numeric);
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- map.put(MCC, mcc);
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- map.put(MNC, mnc);
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+ map.put(MCC, mccString);
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+ map.put(MNC, mncString);
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map.put(NAME, parser.getAttributeValue(null, "carrier"));
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// do not add NULL to the map so that default values can be inserted in db
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@@ -2156,7 +2168,6 @@ public class TelephonyProvider extends ContentProvider
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map.put(MVNO_MATCH_DATA, mvno_match_data);
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}
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}
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-
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return map;
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}
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@@ -2189,15 +2200,15 @@ public class TelephonyProvider extends ContentProvider
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*
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* @param db the sqlite database to write to
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* @param parser the xml parser
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- *
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+ * @param isOverlay, if we are parsing an xml in an overlay
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*/
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- private void loadApns(SQLiteDatabase db, XmlPullParser parser) {
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+ private void loadApns(SQLiteDatabase db, XmlPullParser parser, boolean isOverlay) {
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if (parser != null) {
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try {
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db.beginTransaction();
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XmlUtils.nextElement(parser);
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while (parser.getEventType() != XmlPullParser.END_DOCUMENT) {
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- ContentValues row = getRow(parser);
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+ ContentValues row = getRow(parser, isOverlay);
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if (row == null) {
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throw new XmlPullParserException("Expected 'apn' tag", parser, null);
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}
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