summaryrefslogtreecommitdiff
path: root/package/source
diff options
context:
space:
mode:
Diffstat (limited to 'package/source')
-rw-r--r--package/source/zipapi/ZipFile.cxx9
1 files changed, 7 insertions, 2 deletions
diff --git a/package/source/zipapi/ZipFile.cxx b/package/source/zipapi/ZipFile.cxx
index f01b7ce06f4b..dcd5669897e3 100644
--- a/package/source/zipapi/ZipFile.cxx
+++ b/package/source/zipapi/ZipFile.cxx
@@ -836,13 +836,18 @@ sal_Int32 ZipFile::recover()
aGrabber.seek( 0 );
- for( sal_Int32 nGenPos = 0; aGrabber.readBytes( aBuffer, 32000 ) && aBuffer.getLength() > 30; )
+ const sal_Int32 nToRead = 32000;
+ for( sal_Int32 nGenPos = 0; aGrabber.readBytes( aBuffer, nToRead ) && aBuffer.getLength() > 16; )
{
const sal_Int8 *pBuffer = aBuffer.getConstArray();
sal_Int32 nBufSize = aBuffer.getLength();
sal_Int32 nPos = 0;
- while( nPos < nBufSize - 16 )
+ // the buffer should contain at least one header,
+ // or if it is end of the file, at least the postheader with sizes and hash
+ while( nPos < nBufSize - 30
+ || ( aBuffer.getLength() < nToRead && nPos < nBufSize - 16 ) )
+
{
if ( nPos < nBufSize - 30 && pBuffer[nPos] == 'P' && pBuffer[nPos+1] == 'K' && pBuffer[nPos+2] == 3 && pBuffer[nPos+3] == 4 )
{