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Detect when the Current User stream is too short, and give a more helpful exception in that case

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git-svn-id: https://svn.apache.org/repos/asf/jakarta/poi/trunk@477162 13f79535-47bb-0310-9956-ffa450edef68
This commit is contained in:
Nick Burch 2006-11-20 12:26:51 +00:00
parent 23303f691f
commit fd3bbdbd1c
1 changed files with 7 additions and 0 deletions
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7
src/scratchpad/src/org/apache/poi/hslf/record/CurrentUserAtom.java
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@ -23,6 +23,7 @@ import java.io.*;
import org.apache.poi.poifs.filesystem.*;
import org.apache.poi.util.LittleEndian;
import org.apache.poi.util.StringUtil;
import org.apache.poi.hslf.exceptions.CorruptPowerPointFileException;
/**
@ -96,6 +97,12 @@ public class CurrentUserAtom
(DocumentEntry)fs.getRoot().getEntry("Current User");
_contents = new byte[docProps.getSize()];
// Check it's big enough - if it's not at least 28 bytes long, then
// the record is corrupt
if(_contents.length < 28) {
throw new CorruptPowerPointFileException("The Current User stream must be at least 28 bytes long, but was only " + _contents.length);
}
// Grab the contents
InputStream in = fs.createDocumentInputStream("Current User");
in.read(_contents);