diff options
| author | Michael Stahl <mstahl@redhat.com> | 2014-05-27 13:27:37 +0200 |
|---|---|---|
| committer | Caolán McNamara <caolanm@redhat.com> | 2014-05-28 10:29:56 -0500 |
| commit | a1f385b74a542ab3caaa8abbefc39f14bf27ca72 (patch) | |
| tree | a69d689f538518c66169bfd046c5070d5bc82fba /sw | |
| parent | 477e1eac51cd2840472a2eab8ef68cc352742705 (diff) | |
fdo#77454: sw: ww8 import: add heuristic to ignore mangled crop values
Older versions of OOo/LO would mangle negative crop values on round-trip
of WW8, which now (since the drawing-layer does not ignore them) causes
the images to be rendered invisible; probably large factors don't make
sense anyway, so ignore the crop if it's 50x the image size, which
happens to work for the bugdoc.
Change-Id: I9f36d37e3be27234554bc91e80bfe719b1ce86af
(cherry picked from commit 7e91dd0a3885ac561aee9cf7907632677b9886c1)
Reviewed-on: https://gerrit.libreoffice.org/9508
Reviewed-by: Caolán McNamara <caolanm@redhat.com>
Tested-by: Caolán McNamara <caolanm@redhat.com>
Diffstat (limited to 'sw')
| -rw-r--r-- | sw/source/filter/ww8/ww8graf.cxx | 10 |
1 files changed, 8 insertions, 2 deletions
diff --git a/sw/source/filter/ww8/ww8graf.cxx b/sw/source/filter/ww8/ww8graf.cxx index 8051810875a7..6a298878b807 100644 --- a/sw/source/filter/ww8/ww8graf.cxx +++ b/sw/source/filter/ww8/ww8graf.cxx @@ -1994,8 +1994,14 @@ void SwWW8ImplReader::MapWrapIntoFlyFmt(SvxMSDffImportRec* pRecord, static sal_Int32 lcl_ConvertCrop(sal_uInt32 const nCrop, sal_Int32 const nSize) { // cast to sal_Int32 to handle negative crop properly - return ((static_cast<sal_Int32>(nCrop) >> 16) * nSize) - + (((nCrop & 0xffff) * nSize) >> 16) ; + sal_Int32 const nIntegral(static_cast<sal_Int32>(nCrop) >> 16); + // fdo#77454: heuristic to detect mangled values written by old OOo/LO + if (abs(nIntegral) >= 50) // FIXME: what's a good cut-off? + { + SAL_INFO("sw.ww8", "ignoring suspiciously large crop: " << nIntegral); + return 0; + } + return (nIntegral * nSize) + (((nCrop & 0xffff) * nSize) >> 16); } void |