Sharing a calendar shared with me fails

[raimund-schluessler]

Expected behaviour

When you have edit permissions on a calendar shared with you, it should be possible to re-share the calendar, shouldn't it?

Actual behaviour

Re-sharing

<x4:share xmlns:x4="http://owncloud.org/ns"><x4:set><x0:href xmlns:x0="DAV:">principal:principals/users/tester</x0:href></x4:set></x4:share>

fails with

<?xml version="1.0" encoding="utf-8"?>
<d:error xmlns:d="DAV:" xmlns:s="http://sabredav.org/ns">
  <s:exception>Sabre\DAV\Exception\Forbidden</s:exception>
  <s:message/>
</d:error>

Happens on Nextcloud server 18.0.4 and current master. Also happens in the Calendar app. @georgehrke Do you have an idea why this is the case? Should resharing be possible at all?

[georgehrke]

What does the allowed-sharing-modes prop say?

[raimund-schluessler]

What does the allowed-sharing-modes prop say?

It says

            <cs:allowed-sharing-modes>
                <cs:can-be-shared/>
                <cs:can-be-published/>
            </cs:allowed-sharing-modes>

I guess this is the default, since I didn't change anything (how would you even change it?).

[raimund-schluessler]

This is the whole status of the calendar:

<d:response>
    <d:href>/nextcloud/remote.php/dav/calendars/admin/auto_shared_by_schluessler/</d:href>
    <d:propstat>
        <d:prop>
            <d:resourcetype>
                <d:collection/>
                <cal:calendar/>
            </d:resourcetype>
            <d:displayname>Auto (schluessler) Auto Auto</d:displayname>
            <d:owner>
                <d:href>/nextcloud/remote.php/dav/principals/users/schluessler/</d:href>
            </d:owner>
            <d:sync-token>http://sabre.io/ns/sync/38</d:sync-token>
            <d:current-user-privilege-set>
                <d:privilege>
                    <d:write/>
                </d:privilege>
                <d:privilege>
                    <d:write-properties/>
                </d:privilege>
                <d:privilege>
                    <d:write-content/>
                </d:privilege>
                <d:privilege>
                    <d:unlock/>
                </d:privilege>
                <d:privilege>
                    <d:bind/>
                </d:privilege>
                <d:privilege>
                    <d:unbind/>
                </d:privilege>
                <d:privilege>
                    <d:write-acl/>
                </d:privilege>
                <d:privilege>
                    <d:read/>
                </d:privilege>
                <d:privilege>
                    <d:read-acl/>
                </d:privilege>
                <d:privilege>
                    <d:read-current-user-privilege-set/>
                </d:privilege>
                <d:privilege>
                    <cal:read-free-busy/>
                </d:privilege>
            </d:current-user-privilege-set>
            <oc:invite/>
            <cs:allowed-sharing-modes>
                <cs:can-be-shared/>
                <cs:can-be-published/>
            </cs:allowed-sharing-modes>
            <x1:calendar-order xmlns:x1=\"http://apple.com/ns/ical/\">0</x1:calendar-order>
            <x1:calendar-color xmlns:x1=\"http://apple.com/ns/ical/\">#FF7A66</x1:calendar-color>
            <cs:getctag>http://sabre.io/ns/sync/38</cs:getctag>
            <cal:supported-calendar-component-set>
                <cal:comp name=\"VTODO\"/>
            </cal:supported-calendar-component-set>
            <cal:supported-calendar-data>
                <cal:calendar-data content-type=\"text/calendar\" version=\"2.0\"/>
                <cal:calendar-data content-type=\"application/calendar+json\"/>
            </cal:supported-calendar-data>
            <cal:max-resource-size>10000000</cal:max-resource-size>
            <cal:supported-collation-set>
                <cal:supported-collation>i;ascii-casemap</cal:supported-collation>
                <cal:supported-collation>i;octet</cal:supported-collation>
                <cal:supported-collation>i;unicode-casemap</cal:supported-collation>
            </cal:supported-collation-set>
            <cal:schedule-calendar-transp>
                <cal:transparent/>
            </cal:schedule-calendar-transp>
            <x2:owner-displayname xmlns:x2=\"http://nextcloud.com/ns\">schluessler</x2:owner-displayname>
        </d:prop>
        <d:status>HTTP/1.1 200 OK</d:status>
    </d:propstat>
    <d:propstat>
        <d:prop>
            <d:getcontenttype/>
            <d:getetag/>
            <cs:publish-url/>
            <cal:calendar-description/>
            <cal:calendar-timezone/>
            <cal:min-date-time/>
            <cal:max-date-time/>
            <cal:max-instances/>
            <cal:max-attendees-per-instance/>
            <cal:calendar-free-busy-set/>
            <cal:schedule-default-calendar-URL/>
            <oc:calendar-enabled/>
            <cs:source/>
            <x1:refreshrate xmlns:x1=\"http://apple.com/ns/ical/\"/>
            <cs:subscribed-strip-todos/>
            <cs:subscribed-strip-alarms/>
            <cs:subscribed-strip-attachments/>
            <cal:calendar-availability/>
        </d:prop>
        <d:status>HTTP/1.1 404 Not Found</d:status>
    </d:propstat>
</d:response>

[raimund-schluessler]

@georgehrke Can you reproduce the bug?

[raimund-schluessler]

Since this seems to be a server issue, I close this in favor of nextcloud/server#19994.