Solid server ignores content type

I have tried to upload various images to my POD and at some point I named it "x-jpg" instead of "x.jpg". It turns out that the solid server uses the filename extention to detect content type instead of relying on the actual content type.

Here is an example PUT operation showing the name "...270-jpg" and the content-type "image/jpeg":

PUT https://elfisk.solid.community/public/solidrc/images/Billede-30-10-2018-20.01.20-1541949270-jpg HTTP/1.1
Host: elfisk.solid.community
Connection: keep-alive
Content-Length: 257876
authorization: Bearer XXX
Origin: https://localhost:5001
User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/70.0.3538.77 Safari/537.36
content-type: image/jpeg
Accept: */*
Referer: https://localhost:5001/Home/Models
Accept-Encoding: gzip, deflate, br
Accept-Language: da-DK,da;q=0.9,en-US;q=0.8,en;q=0.7,sv;q=0.6,nb;q=0.5
Cookie: connect.sid=XXX

Later on I do a GET on https://elfisk.solid.community/public/solidrc/images/ which returns the document below. You can see that ".jpg" files have type "jpeg:Resource" whereas the "-jpg" files does not.

@prefix : <#>.
@prefix im: <>.
@prefix ldp: <http://www.w3.org/ns/ldp#>.
@prefix terms: <http://purl.org/dc/terms/>.
@prefix XML: <http://www.w3.org/2001/XMLSchema#>.
@prefix st: <http://www.w3.org/ns/posix/stat#>.
@prefix jpeg: <http://www.w3.org/ns/iana/media-types/image/jpeg#>.

im:
    a ldp:BasicContainer, ldp:Container;
    terms:modified "2018-11-11T15:14:19Z"^^XML:dateTime;
    ldp:contains
        <Billede-30-10-2018-19.52.49-1541949020.jpg>,
        <Billede-30-10-2018-20.01.20-1541949270-jpg>;
    st:mtime 1541949259.98;
    st:size 4096.
<Billede-30-10-2018-19.52.49-1541949020.jpg>
    a jpeg:Resource, ldp:Resource;
    terms:modified "2018-11-11T15:10:11Z"^^XML:dateTime;
    st:mtime 1541949011.912;
    st:size 249480.
<Billede-30-10-2018-20.01.20-1541949270-jpg>
    a ldp:Resource;
    terms:modified "2018-11-11T15:14:22Z"^^XML:dateTime;
    st:mtime 1541949262.852;
    st:size 257876.

Later on the data browser goes beserk when you try to delete the "*-jpg" image as it is served as a turtle document:

GET https://elfisk.solid.community/public/solidrc/images/Billede-30-10-2018-20.01.20-1541949270-jpg HTTP/1.1

HTTP/1.1 200 OK
X-Powered-By: solid-server
Link: <Billede-30-10-2018-20.01.20-1541949270-jpg.acl>; rel="acl", <Billede-30-10-2018-20.01.20-1541949270-jpg.meta>; rel="describedBy", <http://www.w3.org/ns/ldp#Resource>; rel="type"
Content-Type: text/turtle

首先，使用此 issue 中的請求與回應範例，追蹤 Solid 伺服器如何處理檔案名稱沒有已識別副檔名之資源的 PUT 及後續 GET。使用 Content-Type image/jpeg 重現上傳，並驗證該資源是以 image/jpeg 而非 text/turtle 提供，且其分類與上傳的內容一致。