| /* |
| * Copyright (C) 2017 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.server.wifi.hotspot2.anqp; |
| |
| import android.text.TextUtils; |
| |
| import com.android.internal.annotations.VisibleForTesting; |
| import com.android.server.wifi.ByteBufferReader; |
| |
| import java.nio.BufferUnderflowException; |
| import java.nio.ByteBuffer; |
| import java.nio.ByteOrder; |
| import java.nio.charset.StandardCharsets; |
| import java.util.Objects; |
| |
| /** |
| * The Icons available OSU Providers sub field, as specified in |
| * Wi-Fi Alliance Hotspot 2.0 (Release 2) Technical Specification - Version 5.00, |
| * section 4.8.1.4 |
| * |
| * Format: |
| * |
| * | Width | Height | Language | Type Length | Type | Filename Length | Filename | |
| * 2 2 3 1 variable 1 variable |
| */ |
| public class IconInfo { |
| private static final int LANGUAGE_CODE_LENGTH = 3; |
| |
| private final int mWidth; |
| private final int mHeight; |
| private final String mLanguage; |
| private final String mIconType; |
| private final String mFileName; |
| |
| @VisibleForTesting |
| public IconInfo(int width, int height, String language, String iconType, String fileName) { |
| mWidth = width; |
| mHeight = height; |
| mLanguage = language; |
| mIconType = iconType; |
| mFileName = fileName; |
| } |
| |
| /** |
| * Parse a IconInfo from the given buffer. |
| * |
| * @param payload The buffer to read from |
| * @return {@link IconInfo} |
| * @throws BufferUnderflowException |
| */ |
| public static IconInfo parse(ByteBuffer payload) { |
| int width = (int) ByteBufferReader.readInteger(payload, ByteOrder.LITTLE_ENDIAN, 2) |
| & 0xFFFF; |
| int height = (int) ByteBufferReader.readInteger(payload, ByteOrder.LITTLE_ENDIAN, 2) |
| & 0xFFFF; |
| |
| // Read the language string. |
| String language = ByteBufferReader.readString( |
| payload, LANGUAGE_CODE_LENGTH, StandardCharsets.US_ASCII).trim(); |
| |
| String iconType = |
| ByteBufferReader.readStringWithByteLength(payload, StandardCharsets.US_ASCII); |
| String fileName = |
| ByteBufferReader.readStringWithByteLength(payload, StandardCharsets.UTF_8); |
| |
| return new IconInfo(width, height, language, iconType, fileName); |
| } |
| |
| public int getWidth() { |
| return mWidth; |
| } |
| |
| public int getHeight() { |
| return mHeight; |
| } |
| |
| public String getLanguage() { |
| return mLanguage; |
| } |
| |
| public String getIconType() { |
| return mIconType; |
| } |
| |
| public String getFileName() { |
| return mFileName; |
| } |
| |
| @Override |
| public boolean equals(Object thatObject) { |
| if (this == thatObject) { |
| return true; |
| } |
| if (!(thatObject instanceof IconInfo)) { |
| return false; |
| } |
| |
| IconInfo that = (IconInfo) thatObject; |
| return mWidth == that.mWidth |
| && mHeight == that.mHeight |
| && TextUtils.equals(mLanguage, that.mLanguage) |
| && TextUtils.equals(mIconType, that.mIconType) |
| && TextUtils.equals(mFileName, that.mFileName); |
| } |
| |
| @Override |
| public int hashCode() { |
| return Objects.hash(mWidth, mHeight, mLanguage, mIconType, mFileName); |
| } |
| |
| @Override |
| public String toString() { |
| return "IconInfo{" |
| + "Width=" + mWidth |
| + ", Height=" + mHeight |
| + ", Language=" + mLanguage |
| + ", IconType='" + mIconType + "\'" |
| + ", FileName='" + mFileName + "\'" |
| + "}"; |
| } |
| } |