mirror of
https://github.com/revanced/Apktool.git
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7c2cb5b30a
* fix: add headerSize to stringBlock to detect larger headers * fix: handle app with style offset, but 0 styles * refactor: split counting stream into CountingDataInput * fix: read strings till end of string pool chunk * fix: support out of bound string reading * fix: don't read string/style offset out of bounds * refactor: cleanup comments for string parser * style: comment on 4 byte alignment * fix: only warn if utf16 string
73 lines
2.6 KiB
Java
73 lines
2.6 KiB
Java
/*
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* Copyright (C) 2010 Ryszard Wiśniewski <brut.alll@gmail.com>
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* Copyright (C) 2010 Connor Tumbleson <connor.tumbleson@gmail.com>
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* https://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package brut.util;
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import org.apache.commons.io.input.CountingInputStream;
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import com.google.common.io.LittleEndianDataInputStream;
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import java.io.DataInput;
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import java.io.IOException;
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import java.util.logging.Logger;
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public class ExtCountingDataInput extends ExtDataInput {
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private final CountingInputStream mCountIn;
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public ExtCountingDataInput(LittleEndianDataInputStream in) {
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this(new CountingInputStream(in));
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}
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public ExtCountingDataInput(CountingInputStream countIn) {
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// We need to explicitly cast to DataInput as otherwise the constructor is ambiguous.
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// We choose DataInput instead of InputStream as ExtDataInput wraps an InputStream in
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// a DataInputStream which is big-endian and ignores the little-endian behavior.
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super((DataInput) new LittleEndianDataInputStream(countIn));
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mCountIn = countIn;
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}
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public int position() {
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return mCountIn.getCount();
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}
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public int remaining() throws IOException {
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return mCountIn.available();
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}
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public long skip(int bytes) throws IOException {
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return mCountIn.skip(bytes);
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}
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public int[] readSafeIntArray(int length, long maxPosition) throws IOException {
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int[] array = new int[length];
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for (int i = 0; i < length; i++) {
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// #3236 - In some applications we have more strings than fit into the block. This function takes
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// an expected max position and if we are past it, we return early during processing.
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if (position() >= maxPosition) {
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LOGGER.warning(String.format("Bad string block: string entry is at %d, past end at %d",
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position(), maxPosition)
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);
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return array;
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}
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array[i] = readInt();
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}
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return array;
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}
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private static final Logger LOGGER = Logger.getLogger(ExtCountingDataInput.class.getName());
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}
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