/*
* Copyright (C) 2008 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package android.net.wifi;
import android.os.Parcelable;
import android.os.Parcel;
import java.util.BitSet;
/**
* A class representing a configured Wi-Fi network, including the
* security configuration. Android will not necessarily support
* all of these security schemes initially.
*/
public class WifiConfiguration implements Parcelable {
/** {@hide} */
public static final String ssidVarName = "ssid";
/** {@hide} */
public static final String bssidVarName = "bssid";
/** {@hide} */
public static final String pskVarName = "psk";
/** {@hide} */
public static final String[] wepKeyVarNames = { "wep_key0", "wep_key1", "wep_key2", "wep_key3" };
/** {@hide} */
public static final String wepTxKeyIdxVarName = "wep_tx_keyidx";
/** {@hide} */
public static final String priorityVarName = "priority";
/** {@hide} */
public static final String hiddenSSIDVarName = "scan_ssid";
/**
* Recognized key management schemes.
*/
public static class KeyMgmt {
private KeyMgmt() { }
/** WPA is not used; plaintext or static WEP could be used. */
public static final int NONE = 0;
/** WPA pre-shared key (requires {@code preSharedKey} to be specified). */
public static final int WPA_PSK = 1;
/** WPA using EAP authentication. Generally used with an external authentication server. */
public static final int WPA_EAP = 2;
/** IEEE 802.1X using EAP authentication and (optionally) dynamically
* generated WEP keys. */
public static final int IEEE8021X = 3;
public static final String varName = "key_mgmt";
public static final String[] strings = { "NONE", "WPA_PSK", "WPA_EAP", "IEEE8021X" };
}
/**
* Recognized security protocols.
*/
public static class Protocol {
private Protocol() { }
/** WPA/IEEE 802.11i/D3.0 */
public static final int WPA = 0;
/** WPA2/IEEE 802.11i */
public static final int RSN = 1;
public static final String varName = "proto";
public static final String[] strings = { "WPA", "RSN" };
}
/**
* Recognized IEEE 802.11 authentication algorithms.
*/
public static class AuthAlgorithm {
private AuthAlgorithm() { }
/** Open System authentication (required for WPA/WPA2) */
public static final int OPEN = 0;
/** Shared Key authentication (requires static WEP keys) */
public static final int SHARED = 1;
/** LEAP/Network EAP (only used with LEAP) */
public static final int LEAP = 2;
public static final String varName = "auth_alg";
public static final String[] strings = { "OPEN", "SHARED", "LEAP" };
}
/**
* Recognized pairwise ciphers for WPA.
*/
public static class PairwiseCipher {
private PairwiseCipher() { }
/** Use only Group keys (deprecated) */
public static final int NONE = 0;
/** Temporal Key Integrity Protocol [IEEE 802.11i/D7.0] */
public static final int TKIP = 1;
/** AES in Counter mode with CBC-MAC [RFC 3610, IEEE 802.11i/D7.0] */
public static final int CCMP = 2;
public static final String varName = "pairwise";
public static final String[] strings = { "NONE", "TKIP", "CCMP" };
}
/**
* Recognized group ciphers.
* <pre>
* CCMP = AES in Counter mode with CBC-MAC [RFC 3610, IEEE 802.11i/D7.0]
* TKIP = Temporal Key Integrity Protocol [IEEE 802.11i/D7.0]
* WEP104 = WEP (Wired Equivalent Privacy) with 104-bit key
* WEP40 = WEP (Wired Equivalent Privacy) with 40-bit key (original 802.11)
* </pre>
*/
public static class GroupCipher {
private GroupCipher() { }
/** WEP40 = WEP (Wired Equivalent Privacy) with 40-bit key (original 802.11) */
public static final int WEP40 = 0;
/** WEP104 = WEP (Wired Equivalent Privacy) with 104-bit key */
public static final int WEP104 = 1;
/** Temporal Key Integrity Protocol [IEEE 802.11i/D7.0] */
public static final int TKIP = 2;
/** AES in Counter mode with CBC-MAC [RFC 3610, IEEE 802.11i/D7.0] */
public static final int CCMP = 3;
public static final String varName = "group";
public static final String[] strings = { "WEP40", "WEP104", "TKIP", "CCMP" };
}
/** Possible status of a network configuration. */
public static class Status {
private Status() { }
/** this is the network we are currently connected to */
public static final int CURRENT = 0;
/** supplicant will not attempt to use this network */
public static final int DISABLED = 1;
/** supplicant will consider this network available for association */
public static final int ENABLED = 2;
public static final String[] strings = { "current", "disabled", "enabled" };
}
/**
* The ID number that the supplicant uses to identify this
* network configuration entry. This must be passed as an argument
* to most calls into the supplicant.
*/
public int networkId;
/**
* The current status of this network configuration entry.
* @see Status
*/
public int status;
/**
* The network's SSID. Can either be an ASCII string,
* which must be enclosed in double quotation marks
* (e.g., {@code "MyNetwork"}, or a string of
* hex digits,which are not enclosed in quotes
* (e.g., {@code 01a243f405}).
*/
public String SSID;
/**
* When set, this network configuration entry should only be used when
* associating with the AP having the specified BSSID. The value is
* a string in the format of an Ethernet MAC address, e.g.,
* <code>XX:XX:XX:XX:XX:XX</code> where each <code>X</code> is a hex digit.
*/
public String BSSID;
/**
* Pre-shared key for use with WPA-PSK.
* <p/>
* When the value of this key is read, the actual key is
* not returned, just a "*" if the key has a value, or the null
* string otherwise.
*/
public String preSharedKey;
/**
* Up to four WEP keys. Either an ASCII string enclosed in double
* quotation marks (e.g., {@code "abcdef"} or a string
* of hex digits (e.g., {@code 0102030405}).
* <p/>
* When the value of one of these keys is read, the actual key is
* not returned, just a "*" if the key has a value, or the null
* string otherwise.
*/
public String[] wepKeys;
/** Default WEP key index, ranging from 0 to 3. */
public int wepTxKeyIndex;
/**
* Priority determines the preference given to a network by {@code wpa_supplicant}
* when choosing an access point with which to associate.
*/
public int priority;
/**
* This is a network that does not broadcast its SSID, so an
* SSID-specific probe request must be used for scans.
*/
public boolean hiddenSSID;
/**
* The set of key management protocols supported by this configuration.
* See {@link KeyMgmt} for descriptions of the values.
* Defaults to WPA-PSK WPA-EAP.
*/
public BitSet allowedKeyManagement;
/**
* The set of security protocols supported by this configuration.
* See {@link Protocol} for descriptions of the values.
* Defaults to WPA RSN.
*/
public BitSet allowedProtocols;
/**
* The set of authentication protocols supported by this configuration.
* See {@link AuthAlgorithm} for descriptions of the values.
* Defaults to automatic selection.
*/
public BitSet allowedAuthAlgorithms;
/**
* The set of pairwise ciphers for WPA supported by this configuration.
* See {@link PairwiseCipher} for descriptions of the values.
* Defaults to CCMP TKIP.
*/
public BitSet allowedPairwiseCiphers;
/**
* The set of group ciphers supported by this configuration.
* See {@link GroupCipher} for descriptions of the values.
* Defaults to CCMP TKIP WEP104 WEP40.
*/
public BitSet allowedGroupCiphers;
public WifiConfiguration() {
networkId = -1;
SSID = null;
BSSID = null;
priority = 0;
hiddenSSID = false;
allowedKeyManagement = new BitSet();
allowedProtocols = new BitSet();
allowedAuthAlgorithms = new BitSet();
allowedPairwiseCiphers = new BitSet();
allowedGroupCiphers = new BitSet();
wepKeys = new String[4];
for (int i = 0; i < wepKeys.length; i++)
wepKeys[i] = null;
}
public String toString() {
StringBuffer sbuf = new StringBuffer();
if (this.status == WifiConfiguration.Status.CURRENT) {
sbuf.append("* ");
} else if (this.status == WifiConfiguration.Status.DISABLED) {
sbuf.append("- ");
}
sbuf.append("ID: ").append(this.networkId).append(" SSID: ").append(this.SSID).
append(" BSSID: ").append(this.BSSID).append(" PRIO: ").append(this.priority).
append('\n');
sbuf.append(" KeyMgmt:");
for (int k = 0; k < this.allowedKeyManagement.size(); k++) {
if (this.allowedKeyManagement.get(k)) {
sbuf.append(" ");
if (k < KeyMgmt.strings.length) {
sbuf.append(KeyMgmt.strings[k]);
} else {
sbuf.append("??");
}
}
}
sbuf.append(" Protocols:");
for (int p = 0; p < this.allowedProtocols.size(); p++) {
if (this.allowedProtocols.get(p)) {
sbuf.append(" ");
if (p < Protocol.strings.length) {
sbuf.append(Protocol.strings[p]);
} else {
sbuf.append("??");
}
}
}
sbuf.append('\n');
sbuf.append(" AuthAlgorithms:");
for (int a = 0; a < this.allowedAuthAlgorithms.size(); a++) {
if (this.allowedAuthAlgorithms.get(a)) {
sbuf.append(" ");
if (a < AuthAlgorithm.strings.length) {
sbuf.append(AuthAlgorithm.strings[a]);
} else {
sbuf.append("??");
}
}
}
sbuf.append('\n');
sbuf.append(" PairwiseCiphers:");
for (int pc = 0; pc < this.allowedPairwiseCiphers.size(); pc++) {
if (this.allowedPairwiseCiphers.get(pc)) {
sbuf.append(" ");
if (pc < PairwiseCipher.strings.length) {
sbuf.append(PairwiseCipher.strings[pc]);
} else {
sbuf.append("??");
}
}
}
sbuf.append('\n');
sbuf.append(" GroupCiphers:");
for (int gc = 0; gc < this.allowedGroupCiphers.size(); gc++) {
if (this.allowedGroupCiphers.get(gc)) {
sbuf.append(" ");
if (gc < GroupCipher.strings.length) {
sbuf.append(GroupCipher.strings[gc]);
} else {
sbuf.append("??");
}
}
}
sbuf.append('\n');
if (this.preSharedKey != null) {
sbuf.append(" PSK: ").append('*');
}
return sbuf.toString();
}
/**
* Construct a WifiConfiguration from a scanned network
* @param scannedAP the scan result used to construct the config entry
* TODO: figure out whether this is a useful way to construct a new entry.
*
public WifiConfiguration(ScanResult scannedAP) {
networkId = -1;
SSID = scannedAP.SSID;
BSSID = scannedAP.BSSID;
}
*/
private static BitSet readBitSet(Parcel src) {
int cardinality = src.readInt();
BitSet set = new BitSet();
for (int i = 0; i < cardinality; i++)
set.set(src.readInt());
return set;
}
private static void writeBitSet(Parcel dest, BitSet set) {
int nextSetBit = -1;
dest.writeInt(set.cardinality());
while ((nextSetBit = set.nextSetBit(nextSetBit + 1)) != -1)
dest.writeInt(nextSetBit);
}
/** Implement the Parcelable interface {@hide} */
public int describeContents() {
return 0;
}
/** Implement the Parcelable interface {@hide} */
public void writeToParcel(Parcel dest, int flags) {
dest.writeInt(networkId);
dest.writeInt(status);
dest.writeString(SSID);
dest.writeString(BSSID);
dest.writeString(preSharedKey);
for (String wepKey : wepKeys)
dest.writeString(wepKey);
dest.writeInt(wepTxKeyIndex);
dest.writeInt(priority);
dest.writeInt(hiddenSSID ? 1 : 0);
writeBitSet(dest, allowedKeyManagement);
writeBitSet(dest, allowedProtocols);
writeBitSet(dest, allowedAuthAlgorithms);
writeBitSet(dest, allowedPairwiseCiphers);
writeBitSet(dest, allowedGroupCiphers);
}
/** Implement the Parcelable interface {@hide} */
public static final Creator<WifiConfiguration> CREATOR =
new Creator<WifiConfiguration>() {
public WifiConfiguration createFromParcel(Parcel in) {
WifiConfiguration config = new WifiConfiguration();
config.networkId = in.readInt();
config.status = in.readInt();
config.SSID = in.readString();
config.BSSID = in.readString();
config.preSharedKey = in.readString();
for (int i = 0; i < config.wepKeys.length; i++)
config.wepKeys[i] = in.readString();
config.wepTxKeyIndex = in.readInt();
config.priority = in.readInt();
config.hiddenSSID = in.readInt() != 0;
config.allowedKeyManagement = readBitSet(in);
config.allowedProtocols = readBitSet(in);
config.allowedAuthAlgorithms = readBitSet(in);
config.allowedPairwiseCiphers = readBitSet(in);
config.allowedGroupCiphers = readBitSet(in);
return config;
}
public WifiConfiguration[] newArray(int size) {
return new WifiConfiguration[size];
}
};
}