package com.android.server.wifi.anqp;
import java.net.ProtocolException;
import java.nio.ByteBuffer;
import java.nio.charset.StandardCharsets;
import java.util.Collections;
import java.util.HashMap;
import java.util.Locale;
import java.util.Map;
/**
* The Civic Location ANQP Element, IEEE802.11-2012 section 8.4.4.13
*/
public class CivicLocationElement extends ANQPElement {
public enum LocationType {DHCPServer, NwkElement, Client}
private static final int GEOCONF_CIVIC4 = 99;
private static final int RFC4776 = 0; // Table 8-77, 1=vendor specific
private final LocationType mLocationType;
private final Locale mLocale;
private final Map<CAType, String> mValues;
public CivicLocationElement(Constants.ANQPElementType infoID, ByteBuffer payload)
throws ProtocolException {
super(infoID);
if (payload.remaining() < 6) {
throw new ProtocolException("Runt civic location:" + payload.remaining());
}
int locType = payload.get() & Constants.BYTE_MASK;
if (locType != RFC4776) {
throw new ProtocolException("Bad Civic location type: " + locType);
}
int locSubType = payload.get() & Constants.BYTE_MASK;
if (locSubType != GEOCONF_CIVIC4) {
throw new ProtocolException("Unexpected Civic location sub-type: " + locSubType +
" (cannot handle sub elements)");
}
int length = payload.get() & Constants.BYTE_MASK;
if (length > payload.remaining()) {
throw new ProtocolException("Invalid CA type length: " + length);
}
int what = payload.get() & Constants.BYTE_MASK;
mLocationType = what < LocationType.values().length ? LocationType.values()[what] : null;
mLocale = Locale.forLanguageTag(Constants.getString(payload, 2, StandardCharsets.US_ASCII));
mValues = new HashMap<CAType, String>();
while (payload.hasRemaining()) {
int caTypeNumber = payload.get() & Constants.BYTE_MASK;
CAType caType = s_caTypes.get(caTypeNumber);
int caValLen = payload.get() & Constants.BYTE_MASK;
if (caValLen > payload.remaining()) {
throw new ProtocolException("Bad CA value length: " + caValLen);
}
byte[] caValOctets = new byte[caValLen];
payload.get(caValOctets);
if (caType != null) {
mValues.put(caType, new String(caValOctets, StandardCharsets.UTF_8));
}
}
}
public LocationType getLocationType() {
return mLocationType;
}
public Locale getLocale() {
return mLocale;
}
public Map<CAType, String> getValues() {
return Collections.unmodifiableMap(mValues);
}
@Override
public String toString() {
return "CivicLocation{" +
"mLocationType=" + mLocationType +
", mLocale=" + mLocale +
", mValues=" + mValues +
'}';
}
private static final Map<Integer, CAType> s_caTypes = new HashMap<Integer, CAType>();
public static final int LANGUAGE = 0;
public static final int STATE_PROVINCE = 1;
public static final int COUNTY_DISTRICT = 2;
public static final int CITY = 3;
public static final int DIVISION_BOROUGH = 4;
public static final int BLOCK = 5;
public static final int STREET_GROUP = 6;
public static final int STREET_DIRECTION = 16;
public static final int LEADING_STREET_SUFFIX = 17;
public static final int STREET_SUFFIX = 18;
public static final int HOUSE_NUMBER = 19;
public static final int HOUSE_NUMBER_SUFFIX = 20;
public static final int LANDMARK = 21;
public static final int ADDITIONAL_LOCATION = 22;
public static final int NAME = 23;
public static final int POSTAL_ZIP = 24;
public static final int BUILDING = 25;
public static final int UNIT = 26;
public static final int FLOOR = 27;
public static final int ROOM = 28;
public static final int TYPE = 29;
public static final int POSTAL_COMMUNITY = 30;
public static final int PO_BOX = 31;
public static final int ADDITIONAL_CODE = 32;
public static final int SEAT_DESK = 33;
public static final int PRIMARY_ROAD = 34;
public static final int ROAD_SECTION = 35;
public static final int BRANCH_ROAD = 36;
public static final int SUB_BRANCH_ROAD = 37;
public static final int STREET_NAME_PRE_MOD = 38;
public static final int STREET_NAME_POST_MOD = 39;
public static final int SCRIPT = 128;
public static final int RESERVED = 255;
public enum CAType {
Language,
StateProvince,
CountyDistrict,
City,
DivisionBorough,
Block,
StreetGroup,
StreetDirection,
LeadingStreetSuffix,
StreetSuffix,
HouseNumber,
HouseNumberSuffix,
Landmark,
AdditionalLocation,
Name,
PostalZIP,
Building,
Unit,
Floor,
Room,
Type,
PostalCommunity,
POBox,
AdditionalCode,
SeatDesk,
PrimaryRoad,
RoadSection,
BranchRoad,
SubBranchRoad,
StreetNamePreMod,
StreetNamePostMod,
Script,
Reserved
}
static {
s_caTypes.put(LANGUAGE, CAType.Language);
s_caTypes.put(STATE_PROVINCE, CAType.StateProvince);
s_caTypes.put(COUNTY_DISTRICT, CAType.CountyDistrict);
s_caTypes.put(CITY, CAType.City);
s_caTypes.put(DIVISION_BOROUGH, CAType.DivisionBorough);
s_caTypes.put(BLOCK, CAType.Block);
s_caTypes.put(STREET_GROUP, CAType.StreetGroup);
s_caTypes.put(STREET_DIRECTION, CAType.StreetDirection);
s_caTypes.put(LEADING_STREET_SUFFIX, CAType.LeadingStreetSuffix);
s_caTypes.put(STREET_SUFFIX, CAType.StreetSuffix);
s_caTypes.put(HOUSE_NUMBER, CAType.HouseNumber);
s_caTypes.put(HOUSE_NUMBER_SUFFIX, CAType.HouseNumberSuffix);
s_caTypes.put(LANDMARK, CAType.Landmark);
s_caTypes.put(ADDITIONAL_LOCATION, CAType.AdditionalLocation);
s_caTypes.put(NAME, CAType.Name);
s_caTypes.put(POSTAL_ZIP, CAType.PostalZIP);
s_caTypes.put(BUILDING, CAType.Building);
s_caTypes.put(UNIT, CAType.Unit);
s_caTypes.put(FLOOR, CAType.Floor);
s_caTypes.put(ROOM, CAType.Room);
s_caTypes.put(TYPE, CAType.Type);
s_caTypes.put(POSTAL_COMMUNITY, CAType.PostalCommunity);
s_caTypes.put(PO_BOX, CAType.POBox);
s_caTypes.put(ADDITIONAL_CODE, CAType.AdditionalCode);
s_caTypes.put(SEAT_DESK, CAType.SeatDesk);
s_caTypes.put(PRIMARY_ROAD, CAType.PrimaryRoad);
s_caTypes.put(ROAD_SECTION, CAType.RoadSection);
s_caTypes.put(BRANCH_ROAD, CAType.BranchRoad);
s_caTypes.put(SUB_BRANCH_ROAD, CAType.SubBranchRoad);
s_caTypes.put(STREET_NAME_PRE_MOD, CAType.StreetNamePreMod);
s_caTypes.put(STREET_NAME_POST_MOD, CAType.StreetNamePostMod);
s_caTypes.put(SCRIPT, CAType.Script);
s_caTypes.put(RESERVED, CAType.Reserved);
}
}