1/*
2 * Copyright (C) 2016 The Android Open Source Project
3 *
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
7 *
8 *      http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 */
16package com.android.server.wifi.hotspot2;
17
18/**
19 * Match score for EAP credentials:
20 * None means that there is a distinct mismatch, i.e. realm, method or parameter is defined
21 * and mismatches that of the credential.
22 * Indeterminate means that there is no ANQP information to match against.
23 * Note: The numeric values given to the constants are used for preference comparison and
24 * must be maintained accordingly.
25 */
26public abstract class AuthMatch {
27    public static final int NONE = -1;
28    public static final int INDETERMINATE = 0;
29    public static final int REALM = 0x04;
30    public static final int METHOD = 0x02;
31    public static final int PARAM = 0x01;
32    public static final int METHOD_PARAM = METHOD | PARAM;
33    public static final int EXACT = REALM | METHOD | PARAM;
34
35    public static String toString(int match) {
36        if (match < 0) {
37            return "None";
38        }
39        else if (match == 0) {
40            return "Indeterminate";
41        }
42
43        StringBuilder sb = new StringBuilder();
44        if ((match & REALM) != 0) {
45            sb.append("Realm");
46        }
47        if ((match & METHOD) != 0) {
48            sb.append("Method");
49        }
50        if ((match & PARAM) != 0) {
51            sb.append("Param");
52        }
53        return sb.toString();
54    }
55}
56