diff options
| -rw-r--r-- | connectivity/source/drivers/firebird/Blob.cxx | 7 |
1 files changed, 4 insertions, 3 deletions
diff --git a/connectivity/source/drivers/firebird/Blob.cxx b/connectivity/source/drivers/firebird/Blob.cxx index 7a7481bb1367..2c6b95261c31 100644 --- a/connectivity/source/drivers/firebird/Blob.cxx +++ b/connectivity/source/drivers/firebird/Blob.cxx @@ -149,19 +149,20 @@ uno::Sequence< sal_Int8 > SAL_CALL Blob::getBytes(sal_Int64 nPosition, checkDisposed(Blob_BASE::rBHelper.bDisposed); ensureBlobIsOpened(); - if (nPosition > m_nBlobLength) + if (nPosition > m_nBlobLength || nPosition < 1) throw lang::IllegalArgumentException("nPosition out of range", *this, 0); // We only have to read as many bytes as are available, i.e. nPosition+nBytes // can legally be greater than the total length, hence we don't bother to check. - if (nPosition > m_nBlobPosition) + if (nPosition -1 < m_nBlobPosition) { // Resets to the beginning (we can't seek these blobs) closeBlob(); ensureBlobIsOpened(); } - skipBytes(nPosition - m_nBlobPosition); + // nPosition is indexed from 1. + skipBytes(nPosition - m_nBlobPosition -1 ); // Don't bother preallocating: readBytes does the appropriate calculations // and reallocates for us. |