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Limit number of bytes for filename encoding detection

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This commit is contained in:
Ethan Roseman 2019-09-11 14:04:14 -04:00
parent 2b768d7c9f
commit 8e01b23e3c
1 changed files with 12 additions and 5 deletions
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17
Core/src/org/sleuthkit/autopsy/modules/embeddedfileextractor/SevenZipExtractor.java
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@ -808,16 +808,23 @@ class SevenZipExtractor {
return unpackSuccessful;
}
private Charset detectFilenamesCharset(Collection<byte[]> byteDatas) {
private Charset detectFilenamesCharset(ArrayList<byte[]> byteDatas) {
Charset detectedCharset = null;
CharsetDetector charsetDetector = new CharsetDetector();
int sum = 0;
int byteSum = 0;
int fileNum = 0;
for (byte[] byteData : byteDatas) {
sum += byteData.length;
fileNum++;
byteSum += byteData.length;
// Only read ~1000 bytes of filenames in this directory
if (byteSum >= 1000) {
break;
}
}
byte[] allBytes = new byte[sum];
byte[] allBytes = new byte[byteSum];
int start = 0;
for (byte[] byteData : byteDatas) {
for (int i = 0; i < fileNum; i++) {
byte[] byteData = byteDatas.get(i);
System.arraycopy(byteData, 0, allBytes, start, byteData.length);
start += byteData.length;
}