src/main/java/com/android/apkzlib/zip/ZipFieldInvariantMaxValue.java


1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47

/*
 * Copyright (C) 2015 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 com.android.apkzlib.zip;

/**
 * Invariant checking a zip field does not exceed a threshold.
 */
class ZipFieldInvariantMaxValue implements ZipFieldInvariant {

    /**
     * The maximum value allowed.
     */
    private long max;

    /**
     * Creates a new invariant.
     *
     * @param max the maximum value allowed for the field
     */
    ZipFieldInvariantMaxValue(int max) {
        this.max = max;
    }

    @Override
    public boolean isValid(long value) {
        return value <= max;
    }

    @Override
    public String getName() {
        return "Maximum value " + max;
    }
}