[mapserver-dev] Corrupt MapServer Zip outputs

[Even Rouault]

Seth,

The .zip extension of this test file is a bit misleading, as the HTTP 
headers are not stripped (testing HTTP headers is something good to test 
in some tests). I've issued 
https://github.com/MapServer/MapServer/pull/6440 to rename the expected 
file though to avoid the confusion

You can obtain a valid .zip file without headers with

../../build/mapserv -conf ../etc/mapserv.conf -nh 
QUERY_STRING="map=wfs_ogr.map&SERVICE=WFS&VERSION=1.0.0&REQUEST=GetFeature&TYPENAME=road&featureid=road.1521&OUTPUTFORMAT=SHAPEZIP" 
 > out.zip

Even

Le 21/11/2021 à 12:32, Seth G a écrit :
> Hi all,
>
> Following on from the post at https://lists.osgeo.org/pipermail/mapserver-users/2021-November/082429.html I've been trying to find where the cause of the corrupt zips may be.
>
> There is a msautotest to create zip files and check against the expected output, however the expected output also seems to be an invalid zip file - I tried on both Windows and Linux.
>
> Even stranger this is both in the main branch (simply download the file with the following URL to test), and also going back in the history to 2016.
>
> https://github.com/MapServer/MapServer/blob/main/msautotest/wxs/expected/wfsogr10_shapezip.zip
>
> I had a working process using shapezips in a 7.6 release of MapServer so its hard to understand what could have changed, MapServer, GDAL, or zip formats themselves?
> I'll attempt a Git bisect but if the issue is outside MapServer it won't find an issue.
>
> If anyone is able to open the zip file successfully please let me know (tried with Ark and unzip on Linux and Windows inbuilt unzip and 7-zip on Windows). Error seems to be "87 extra bytes at beginning or within zip file".
>
> Seth
>
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