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60305 -- gracefully handle truncated images while reading pictstream

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git-svn-id: https://svn.apache.org/repos/asf/poi/trunk@1767023 13f79535-47bb-0310-9956-ffa450edef68
This commit is contained in:
Tim Allison 2016-10-28 13:39:40 +00:00
parent 591785e2d2
commit ca8d888f83
1 changed files with 8 additions and 0 deletions
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8
src/scratchpad/src/org/apache/poi/hslf/usermodel/HSLFSlideShowImpl.java
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@ -400,6 +400,14 @@ public final class HSLFSlideShowImpl extends POIDocument implements Closeable {
logger.log(POILogger.ERROR, "Problem reading picture: Invalid image type 0, on picture with length " + imgsize + ".\nYou document will probably become corrupted if you save it!"); logger.log(POILogger.ERROR, "Problem reading picture: Invalid image type 0, on picture with length " + imgsize + ".\nYou document will probably become corrupted if you save it!");
logger.log(POILogger.ERROR, "" + pos); logger.log(POILogger.ERROR, "" + pos);
} else { } else {
//The pictstream can be truncated halfway through a picture.
//This is not a problem if the pictstream contains extra pictures
//that are not used in any slide -- BUG-60305
if (pos+imgsize > pictstream.length) {
logger.log(POILogger.WARN, "\"Pictures\" stream may have ended early. In some circumstances, this is not a problem; " +
"in others, this could indicate a corrupt file");
break;
}
// Build the PictureData object from the data // Build the PictureData object from the data
try { try {
HSLFPictureData pict = HSLFPictureData.create(pt); HSLFPictureData pict = HSLFPictureData.create(pt);