| package com.android.server.wifi.anqp; |
| |
| import java.net.ProtocolException; |
| import java.nio.ByteBuffer; |
| import java.nio.ByteOrder; |
| import java.nio.charset.Charset; |
| import java.util.HashMap; |
| import java.util.Map; |
| |
| /** |
| * ANQP related constants (802.11-2012) |
| */ |
| public class Constants { |
| |
| public static final int NIBBLE_MASK = 0x0f; |
| public static final int BYTE_MASK = 0xff; |
| public static final int SHORT_MASK = 0xffff; |
| public static final long INT_MASK = 0xffffffffL; |
| public static final int BYTES_IN_SHORT = 2; |
| public static final int BYTES_IN_INT = 4; |
| public static final int BYTES_IN_EUI48 = 6; |
| |
| public static final int HS20_PREFIX = 0x119a6f50; // Note that this is represented as a LE int |
| public static final int HS20_FRAME_PREFIX = 0x109a6f50; |
| public static final int UTF8_INDICATOR = 1; |
| |
| public static final int ANQP_QUERY_LIST = 256; |
| public static final int ANQP_CAPABILITY_LIST = 257; |
| public static final int ANQP_VENUE_NAME = 258; |
| public static final int ANQP_EMERGENCY_NUMBER = 259; |
| public static final int ANQP_NWK_AUTH_TYPE = 260; |
| public static final int ANQP_ROAMING_CONSORTIUM = 261; |
| public static final int ANQP_IP_ADDR_AVAILABILITY = 262; |
| public static final int ANQP_NAI_REALM = 263; |
| public static final int ANQP_3GPP_NETWORK = 264; |
| public static final int ANQP_GEO_LOC = 265; |
| public static final int ANQP_CIVIC_LOC = 266; |
| public static final int ANQP_LOC_URI = 267; |
| public static final int ANQP_DOM_NAME = 268; |
| public static final int ANQP_EMERGENCY_ALERT = 269; |
| public static final int ANQP_TDLS_CAP = 270; |
| public static final int ANQP_EMERGENCY_NAI = 271; |
| public static final int ANQP_NEIGHBOR_REPORT = 272; |
| public static final int ANQP_VENDOR_SPEC = 56797; |
| |
| public static final int HS_QUERY_LIST = 1; |
| public static final int HS_CAPABILITY_LIST = 2; |
| public static final int HS_FRIENDLY_NAME = 3; |
| public static final int HS_WAN_METRICS = 4; |
| public static final int HS_CONN_CAPABILITY = 5; |
| public static final int HS_NAI_HOME_REALM_QUERY = 6; |
| public static final int HS_OPERATING_CLASS = 7; |
| public static final int HS_OSU_PROVIDERS = 8; |
| public static final int HS_ICON_REQUEST = 10; |
| public static final int HS_ICON_FILE = 11; |
| |
| public enum ANQPElementType { |
| ANQPQueryList, |
| ANQPCapabilityList, |
| ANQPVenueName, |
| ANQPEmergencyNumber, |
| ANQPNwkAuthType, |
| ANQPRoamingConsortium, |
| ANQPIPAddrAvailability, |
| ANQPNAIRealm, |
| ANQP3GPPNetwork, |
| ANQPGeoLoc, |
| ANQPCivicLoc, |
| ANQPLocURI, |
| ANQPDomName, |
| ANQPEmergencyAlert, |
| ANQPTDLSCap, |
| ANQPEmergencyNAI, |
| ANQPNeighborReport, |
| ANQPVendorSpec, |
| HSQueryList, |
| HSCapabilityList, |
| HSFriendlyName, |
| HSWANMetrics, |
| HSConnCapability, |
| HSNAIHomeRealmQuery, |
| HSOperatingclass, |
| HSOSUProviders, |
| HSIconRequest, |
| HSIconFile |
| } |
| |
| private static final Map<Integer, ANQPElementType> sAnqpMap = new HashMap<Integer, ANQPElementType>(); |
| private static final Map<Integer, ANQPElementType> sHs20Map = new HashMap<Integer, ANQPElementType>(); |
| private static final Map<ANQPElementType, Integer> sRevAnqpmap = new HashMap<ANQPElementType, Integer>(); |
| private static final Map<ANQPElementType, Integer> sRevHs20map = new HashMap<ANQPElementType, Integer>(); |
| |
| static { |
| sAnqpMap.put(ANQP_QUERY_LIST, ANQPElementType.ANQPQueryList); |
| sAnqpMap.put(ANQP_CAPABILITY_LIST, ANQPElementType.ANQPCapabilityList); |
| sAnqpMap.put(ANQP_VENUE_NAME, ANQPElementType.ANQPVenueName); |
| sAnqpMap.put(ANQP_EMERGENCY_NUMBER, ANQPElementType.ANQPEmergencyNumber); |
| sAnqpMap.put(ANQP_NWK_AUTH_TYPE, ANQPElementType.ANQPNwkAuthType); |
| sAnqpMap.put(ANQP_ROAMING_CONSORTIUM, ANQPElementType.ANQPRoamingConsortium); |
| sAnqpMap.put(ANQP_IP_ADDR_AVAILABILITY, ANQPElementType.ANQPIPAddrAvailability); |
| sAnqpMap.put(ANQP_NAI_REALM, ANQPElementType.ANQPNAIRealm); |
| sAnqpMap.put(ANQP_3GPP_NETWORK, ANQPElementType.ANQP3GPPNetwork); |
| sAnqpMap.put(ANQP_GEO_LOC, ANQPElementType.ANQPGeoLoc); |
| sAnqpMap.put(ANQP_CIVIC_LOC, ANQPElementType.ANQPCivicLoc); |
| sAnqpMap.put(ANQP_LOC_URI, ANQPElementType.ANQPLocURI); |
| sAnqpMap.put(ANQP_DOM_NAME, ANQPElementType.ANQPDomName); |
| sAnqpMap.put(ANQP_EMERGENCY_ALERT, ANQPElementType.ANQPEmergencyAlert); |
| sAnqpMap.put(ANQP_TDLS_CAP, ANQPElementType.ANQPTDLSCap); |
| sAnqpMap.put(ANQP_EMERGENCY_NAI, ANQPElementType.ANQPEmergencyNAI); |
| sAnqpMap.put(ANQP_NEIGHBOR_REPORT, ANQPElementType.ANQPNeighborReport); |
| sAnqpMap.put(ANQP_VENDOR_SPEC, ANQPElementType.ANQPVendorSpec); |
| |
| sHs20Map.put(HS_QUERY_LIST, ANQPElementType.HSQueryList); |
| sHs20Map.put(HS_CAPABILITY_LIST, ANQPElementType.HSCapabilityList); |
| sHs20Map.put(HS_FRIENDLY_NAME, ANQPElementType.HSFriendlyName); |
| sHs20Map.put(HS_WAN_METRICS, ANQPElementType.HSWANMetrics); |
| sHs20Map.put(HS_CONN_CAPABILITY, ANQPElementType.HSConnCapability); |
| sHs20Map.put(HS_NAI_HOME_REALM_QUERY, ANQPElementType.HSNAIHomeRealmQuery); |
| sHs20Map.put(HS_OPERATING_CLASS, ANQPElementType.HSOperatingclass); |
| sHs20Map.put(HS_OSU_PROVIDERS, ANQPElementType.HSOSUProviders); |
| sHs20Map.put(HS_ICON_REQUEST, ANQPElementType.HSIconRequest); |
| sHs20Map.put(HS_ICON_FILE, ANQPElementType.HSIconFile); |
| |
| for (Map.Entry<Integer, ANQPElementType> entry : sAnqpMap.entrySet()) { |
| sRevAnqpmap.put(entry.getValue(), entry.getKey()); |
| } |
| for (Map.Entry<Integer, ANQPElementType> entry : sHs20Map.entrySet()) { |
| sRevHs20map.put(entry.getValue(), entry.getKey()); |
| } |
| } |
| |
| public static ANQPElementType mapANQPElement(int id) { |
| return sAnqpMap.get(id); |
| } |
| |
| public static ANQPElementType mapHS20Element(int id) { |
| return sHs20Map.get(id); |
| } |
| |
| public static Integer getANQPElementID(ANQPElementType elementType) { |
| return sRevAnqpmap.get(elementType); |
| } |
| |
| public static Integer getHS20ElementID(ANQPElementType elementType) { |
| return sRevHs20map.get(elementType); |
| } |
| |
| public static long getInteger(ByteBuffer payload, ByteOrder bo, int size) { |
| byte[] octets = new byte[size]; |
| payload.get(octets); |
| long value = 0; |
| if (bo == ByteOrder.LITTLE_ENDIAN) { |
| for (int n = octets.length - 1; n >= 0; n--) { |
| value = (value << Byte.SIZE) | (octets[n] & BYTE_MASK); |
| } |
| } |
| else { |
| for (byte octet : octets) { |
| value = (value << Byte.SIZE) | (octet & BYTE_MASK); |
| } |
| } |
| return value; |
| } |
| |
| public static String getPrefixedString(ByteBuffer payload, int lengthLength, Charset charset) |
| throws ProtocolException { |
| return getPrefixedString(payload, lengthLength, charset, false); |
| } |
| |
| public static String getPrefixedString(ByteBuffer payload, int lengthLength, Charset charset, |
| boolean useNull) throws ProtocolException { |
| if (payload.remaining() < lengthLength) { |
| throw new ProtocolException("Runt string: " + payload.remaining()); |
| } |
| return getString(payload, (int) getInteger(payload, ByteOrder.LITTLE_ENDIAN, |
| lengthLength), charset, useNull); |
| } |
| |
| public static String getString(ByteBuffer payload, int length, Charset charset) |
| throws ProtocolException { |
| return getString(payload, length, charset, false); |
| } |
| |
| public static String getString(ByteBuffer payload, int length, Charset charset, boolean useNull) |
| throws ProtocolException { |
| if (length > payload.remaining()) { |
| throw new ProtocolException("Bad string length: " + length); |
| } |
| if (useNull && length == 0) { |
| return null; |
| } |
| byte[] octets = new byte[length]; |
| payload.get(octets); |
| return new String(octets, charset); |
| } |
| } |
