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| author | Christian Lippka ORACLE <christian.lippka@oracle.com> | 2011-01-05 12:10:11 +0100 |
|---|---|---|
| committer | Christian Lippka ORACLE <christian.lippka@oracle.com> | 2011-01-05 12:10:11 +0100 |
| commit | f505d910216efd51409b0ea434ea16f6f2d18324 (patch) | |
| tree | 979e3047768358b53b404c7d125292d3bdc5e69d | |
| parent | 3d6d4b78498e049b23b529480414ec8bc56fa8ff (diff) | |
impress208: #i115944# fixing large ooxml files
| -rw-r--r-- | package/source/zipapi/ZipFile.cxx | 10 |
1 files changed, 7 insertions, 3 deletions
diff --git a/package/source/zipapi/ZipFile.cxx b/package/source/zipapi/ZipFile.cxx index 6b1aca5056c4..dcd5669897e3 100644 --- a/package/source/zipapi/ZipFile.cxx +++ b/package/source/zipapi/ZipFile.cxx @@ -836,14 +836,18 @@ sal_Int32 ZipFile::recover() aGrabber.seek( 0 ); - // TODO/LATER: let the files > 2Gb handle the 2Gb border correctly ( if header is splitted ) - for( sal_Int32 nGenPos = 0; aGrabber.readBytes( aBuffer, SAL_MAX_INT32 ) && 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 ) { |