QDecompressHelper: limit decompression ratio

To avoid potential decompression bombs. This is implemented with just
a simple check that the ratio doesn't pass some hardcoded preset.

Change-Id: I17246f0f43e73280cdb35a8f03d65885f5678ad6
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>

1 files changed, 2 insertions, 0 deletions

diff --git a/tests/auto/network/access/qdecompresshelper/tst_qdecompresshelper.cpp b/tests/auto/network/access/qdecompresshelper/tst_qdecompresshelper.cpp
index 7a3aa37a47..23040b7624 100644
--- a/tests/auto/network/access/qdecompresshelper/tst_qdecompresshelper.cpp
+++ b/tests/auto/network/access/qdecompresshelper/tst_qdecompresshelper.cpp
@@ -372,6 +372,7 @@ void tst_QDecompressHelper::decompressBigData()
     const qint64 third = file.bytesAvailable() / 3;
 
     QDecompressHelper helper;
+    helper.setArchiveBombDetectionEnabled(false);
     QFETCH(QByteArray, encoding);
     helper.setEncoding(encoding);
 
@@ -401,6 +402,7 @@ void tst_QDecompressHelper::bigZlib()
     QByteArray compressedData = file.readAll();
 
     QDecompressHelper helper;
+    helper.setArchiveBombDetectionEnabled(false);
     helper.setEncoding("deflate");
     auto firstHalf = compressedData.left(compressedData.size() - 2);
     helper.feed(firstHalf);