Using PROPFIND with custom properties (owncloud / nextcloud)

[Bogeyx]

Hey,
i couldn't find a documentation so: Am i doing something wrong or is there a bug?
Im trying to connect to my nextcloud webdav and get some Proeprties:

var param = new PropfindParameters();
param.Namespaces = new List<NamespaceAttr>()
{
   new NamespaceAttr("oc", "http://owncloud.org/ns"),
   new NamespaceAttr("nc", "http://nextcloud.org/ns")
};
param.CustomProperties = new List<XName>()
{
   XName.Get("fileid", "oc:"),
   XName.Get("size", "oc:"),
   XName.Get("owner-display-name", "oc:"),
   XName.Get("mount-type", "nc:"),
};
param.ApplyTo = ApplyTo.Propfind.ResourceAndAncestors;
var result = await _client.Propfind("remote.php/webdav/", param);

The Result ist valid and i get all my Resources, but without any CustomProperties.
But i know these Properties exist, because using curl i get all my CustomProperties

[skazantsev]

Hi @Bogeyx,

Could you share an example of an XML response that you're getting from the server, please?

[Bogeyx]

Thx for the fast Answer. Doing a manual propfind with depth 1 returns:

<?xml version="1.0"?>
<d:multistatus xmlns:d="DAV:" xmlns:s="http://sabredav.org/ns" xmlns:oc="http://owncloud.org/ns" xmlns:nc="http://nextcloud.org/ns">
    <d:response>
        <d:href>/remote.php/webdav/</d:href>
        <d:propstat>
            <d:prop>
                <d:getlastmodified>Fri, 10 Aug 2018 11:06:30 GMT</d:getlastmodified>
                <oc:fileid>7</oc:fileid>
                <oc:size>2124220271</oc:size>
                <nc:mount-type></nc:mount-type>
                <oc:owner-display-name>Max</oc:owner-display-name>
            </d:prop>
            <d:status>HTTP/1.1 200 OK</d:status>
        </d:propstat>
    </d:response>
    <d:response>
        <d:href>/remote.php/webdav/Verwaltung/</d:href>
        <d:propstat>
            <d:prop>
                <d:getlastmodified>Wed, 08 Aug 2018 18:13:03 GMT</d:getlastmodified>
                <oc:fileid>383</oc:fileid>
                <oc:size>67701476</oc:size>
                <nc:mount-type>group</nc:mount-type>
                <oc:owner-display-name>Max</oc:owner-display-name>
            </d:prop>
            <d:status>HTTP/1.1 200 OK</d:status>
        </d:propstat>
    </d:response>
    <d:response>
        <d:href>/remote.php/webdav/Verbreitung_Fragebogen.docx</d:href>
        <d:propstat>
            <d:prop>
                <d:getlastmodified>Wed, 06 Jun 2018 20:30:01 GMT</d:getlastmodified>
                <oc:fileid>1633</oc:fileid>
                <oc:size>10993</oc:size>
                <nc:mount-type>shared</nc:mount-type>
                <oc:owner-display-name>julian</oc:owner-display-name>
            </d:prop>
            <d:status>HTTP/1.1 200 OK</d:status>
        </d:propstat>
    </d:response>
</d:multistatus>

[skazantsev]

The response can be parsed correctly, seems like a problem in a request that is made by the lib.

Can you send me an example of a request that you're sending via curl?

Does it work if you specify only a single namespace?

var param = new PropfindParameters
{
    Namespaces = new List<NamespaceAttr> {
       new NamespaceAttr("http://owncloud.org/ns")
    }.
    CustomProperties = new List<XName> { "fileid", "size", "owner-display-name" },
    ApplyTo = ApplyTo.Propfind.ResourceAndAncestors
}

[skazantsev]

Sorry, I got confused by LINQ to XML.
I've found a way to generate a correct request.

Instead of a namespace name (oc, nc) you need to pass a namespace value to XName.Get.

Your example generates the following request:

<?xml version="1.0" encoding="utf-8"?>
<D:propfind xmlns:D="DAV:">
  <D:allprop />
  <D:include xmlns:oc="http://owncloud.org/ns" xmlns:nc="http://nextcloud.org/ns">
    <fileid xmlns="oc" />
    <size xmlns="oc" />
    <owner-display-name xmlns="oc" />
    <mount-type xmlns="nc" />
  </D:include>
</D:propfind>

If you use the following parameters

new PropfindParameters
{
  Namespaces = new List<NamespaceAttr>
  {
    new NamespaceAttr("oc", "http://owncloud.org/ns"),
    new NamespaceAttr("nc", "http://nextcloud.org/ns")
  },
  CustomProperties = new List<XName>()
  {
    XName.Get("fileid", "http://owncloud.org/ns"),
    XName.Get("size", "http://owncloud.org/ns"),
    XName.Get("owner-display-name", "http://owncloud.org/ns"),
    XName.Get("mount-type", "http://nextcloud.org/ns"),
  },
  ApplyTo = ApplyTo.Propfind.ResourceAndAncestors
}

it generates this:

<?xml version="1.0" encoding="utf-8"?>
<D:propfind xmlns:D="DAV:">
  <D:allprop />
  <D:include xmlns:oc="http://owncloud.org/ns" xmlns:nc="http://nextcloud.org/ns">
    <oc:fileid />
    <oc:size />
    <oc:owner-display-name />
    <nc:mount-type />
  </D:include>
</D:propfind>

I hope this request will be handled correctly by your WebDAV server.

Please let me know if it works.

[Bogeyx]

Sry for the late answer. But nope it doesnt seem to help.

A working curl would be:

curl --basic --user 'user:pass' -i -X PROPFIND 'my.web.dav' -H "Depth: 1" 
-d '<?xml version="1.0"?><d:propfind  xmlns:d="DAV:" xmlns:oc="http://owncloud.org/ns" xmlns:nc="http://nextcloud.org/ns"><d:prop><d:getlastmodified /><oc:fileid /><oc:permissions /><oc:size /><nc:mount-type /><oc:owner-display-name /></d:prop></d:propfind>'

Content formated:

<?xml version="1.0"?>
<d:propfind  xmlns:d="DAV:" xmlns:oc="http://owncloud.org/ns" xmlns:nc="http://nextcloud.org/ns">
   <d:prop>
      <d:getlastmodified />
      <oc:fileid />
      <oc:permissions />
      <oc:size />
      <nc:mount-type />
      <oc:owner-display-name />
   </d:prop>
</d:propfind>

Using d:include instead of d:prop doesnt work with curl, too. Don't know much about webdav, but looks like nextcloud wants it this way.

[skazantsev]

OK, so you WebDAV server doesn't support include.
Maybe creating a PROPFIND request with d:prop instead of d:allprop/d:include is better if it's supported by more WebDAV servers out there.
Seems like there's no workaround for now but I'll try to address this issue in the near future.

[skazantsev]

Hi @Bogeyx,

I have published a release 2.2.3 that adds an ability to change an issued PROPFIND request to use 'd:prop' instead of 'allprop' and 'include'.

To achieve that you need to pass PropfindRequestType.NamedProperties to PropfindParameters:

var @params = new PropfindParameters
{
	RequestType = PropfindRequestType.NamedProperties,
	CustomProperties = new XName[] {
		"{DAV:}getlastmodified",
		"{http://owncloud.org/ns}fileid",
		"{http://owncloud.org/ns}permissions",
		"{http://owncloud.org/ns}size",
		"{http://owncloud.org/ns}owner-display-name",
		"{http://nextcloud.org/ns}mount-type"
	},
	Namespaces = new[] {
		new NamespaceAttr("oc", "http://owncloud.org/ns"),
		new NamespaceAttr("nc", "http://nextcloud.org/ns")
	}
}

You can also refer to this test https://github.com/skazantsev/WebDavClient/blob/master/src/WebDav.Client.Tests/Methods/PropfindTests.cs#L269-L304

It should help integrate with WebDAV servers that don't support 'allprop' or 'include'.

[Bogeyx]

Hi,
yes it works now, thank you!

[Mubeen07]

Hi @Bogeyx,

I have published a release 2.2.3 that adds an ability to change an issued PROPFIND request to use 'd:prop' instead of 'allprop' and 'include'.

To achieve that you need to pass PropfindRequestType.NamedProperties to PropfindParameters:

var @params = new PropfindParameters
{
	RequestType = PropfindRequestType.NamedProperties,
	CustomProperties = new XName[] {
		"{DAV:}getlastmodified",
		"{http://owncloud.org/ns}fileid",
		"{http://owncloud.org/ns}permissions",
		"{http://owncloud.org/ns}size",
		"{http://owncloud.org/ns}owner-display-name",
		"{http://nextcloud.org/ns}mount-type"
	},
	Namespaces = new[] {
		new NamespaceAttr("oc", "http://owncloud.org/ns"),
		new NamespaceAttr("nc", "http://nextcloud.org/ns")
	}
}

You can also refer to this test https://github.com/skazantsev/WebDavClient/blob/master/src/WebDav.Client.Tests/Methods/PropfindTests.cs#L269-L304

It should help integrate with WebDAV servers that don't support 'allprop' or 'include'.

Hi @skazantsev
Is it possible to convert this call in postman, if yes than can you please guide me or can share an example of postman call?