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Android example source code file (SupplicantState.java)

This example Android source code file (SupplicantState.java) is included in the DevDaily.com "Java Source Code Warehouse" project. The intent of this project is to help you "Learn Android by Example" TM.

Java - Android tags/keywords

android, associated, associating, completed, creator, disconnected, dormant, four_way_handshake, group_handshake, inactive, invalid, os, parcelable, scanning, supplicantstate, uninitialized

The SupplicantState.java Android example source code

/*
 * 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.Parcel;
import android.os.Parcelable;

/**
 * From <code>defs.h in wpa_supplicant.
 * <p/>
 * These enumeration values are used to indicate the current wpa_supplicant
 * state. This is more fine-grained than most users will be interested in.
 * In general, it is better to use
 * {@link android.net.NetworkInfo.State NetworkInfo.State}.
 * <p/>
 * Note, the order of these enum constants must match the numerical values of the
 * state constants in <code>defs.h in wpa_supplicant.
 */
public enum SupplicantState implements Parcelable {
    /**
     * This state indicates that client is not associated, but is likely to
     * start looking for an access point. This state is entered when a
     * connection is lost.
     */
    DISCONNECTED,

    /**
     * Inactive state (wpa_supplicant disabled).
     * <p/>
     * This state is entered if there are no enabled networks in the
     * configuration. wpa_supplicant is not trying to associate with a new
     * network and external interaction (e.g., ctrl_iface call to add or
     * enable a network) is needed to start association.
     */
    INACTIVE,

    /**
     * Scanning for a network.
     * <p/>
     * This state is entered when wpa_supplicant starts scanning for a
     * network.
     */
    SCANNING,

    /**
     * Trying to associate with a BSS/SSID.
     * <p/>
     * This state is entered when wpa_supplicant has found a suitable BSS
     * to associate with and the driver is configured to try to associate
     * with this BSS in ap_scan=1 mode. When using ap_scan=2 mode, this
     * state is entered when the driver is configured to try to associate
     * with a network using the configured SSID and security policy.
     */
    ASSOCIATING,

    /**
     * Association completed.
     * <p/>
     * This state is entered when the driver reports that association has
     * been successfully completed with an AP. If IEEE 802.1X is used
     * (with or without WPA/WPA2), wpa_supplicant remains in this state
     * until the IEEE 802.1X/EAPOL authentication has been completed.
     */
    ASSOCIATED,

    /**
     * WPA 4-Way Key Handshake in progress.
     * <p/>
     * This state is entered when WPA/WPA2 4-Way Handshake is started. In
     * case of WPA-PSK, this happens when receiving the first EAPOL-Key
     * frame after association. In case of WPA-EAP, this state is entered
     * when the IEEE 802.1X/EAPOL authentication has been completed.
     */
    FOUR_WAY_HANDSHAKE,

    /**
     * WPA Group Key Handshake in progress.
     * <p/>
     * This state is entered when 4-Way Key Handshake has been completed
     * (i.e., when the supplicant sends out message 4/4) and when Group
     * Key rekeying is started by the AP (i.e., when supplicant receives
     * message 1/2).
     */
    GROUP_HANDSHAKE,

    /**
     * All authentication completed.
     * <p/>
     * This state is entered when the full authentication process is
     * completed. In case of WPA2, this happens when the 4-Way Handshake is
     * successfully completed. With WPA, this state is entered after the
     * Group Key Handshake; with IEEE 802.1X (non-WPA) connection is
     * completed after dynamic keys are received (or if not used, after
     * the EAP authentication has been completed). With static WEP keys and
     * plaintext connections, this state is entered when an association
     * has been completed.
     * <p/>
     * This state indicates that the supplicant has completed its
     * processing for the association phase and that data connection is
     * fully configured. Note, however, that there may not be any IP
     * address associated with the connection yet. Typically, a DHCP
     * request needs to be sent at this point to obtain an address.
     */
    COMPLETED,

    /**
     * An Android-added state that is reported when a client issues an
     * explicit DISCONNECT command. In such a case, the supplicant is
     * not only dissociated from the current access point (as for the
     * DISCONNECTED state above), but it also does not attempt to connect
     * to any access point until a RECONNECT or REASSOCIATE command
     * is issued by the client.
     */
    DORMANT,

    /**
     * No connection to wpa_supplicant.
     * <p/>
     * This is an additional pseudo-state to handle the case where
     * wpa_supplicant is not running and/or we have not been able
     * to establish a connection to it.
     */
    UNINITIALIZED,

    /**
     * A pseudo-state that should normally never be seen.
     */
    INVALID;

    /**
     * Returns {@code true} if the supplicant state is valid and {@code false}
     * otherwise.
     * @param state The supplicant state
     * @return {@code true} if the supplicant state is valid and {@code false}
     * otherwise.
     */
    public static boolean isValidState(SupplicantState state) {
        return state != UNINITIALIZED && state != INVALID;
    }

    /** Implement the Parcelable interface {@hide} */
    public int describeContents() {
        return 0;
    }

    /** Implement the Parcelable interface {@hide} */
    public void writeToParcel(Parcel dest, int flags) {
        dest.writeString(name());
    }

    /** Implement the Parcelable interface {@hide} */
    public static final Creator<SupplicantState> CREATOR =
        new Creator<SupplicantState>() {
            public SupplicantState createFromParcel(Parcel in) {
                return SupplicantState.valueOf(in.readString());
            }

            public SupplicantState[] newArray(int size) {
                return new SupplicantState[size];
            }
        };

}

Other Android examples (source code examples)

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