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<div style="font-size:10.0pt;font-family:Verdana,Arial">>
Enable the imapmagicplus option in imapd.conf<br>
<br>
With this option I could login with imtest specifying "+DAV" for
the user, both as the admin and as a regular user, but then when
trying to select a folder, I got "NO Permission denied" for the
admin and "NO Mailbox does not exist" for a common user. This
looks like undocumented magic and <font face="Courier New">mbexamine</font>
actually provides all needed information, so I will get file
details with it.<br>
<br>
Thanks for you help, Ken.<br>
<br>
</div>
<div style="border:none;border-top:solid #B5C4DF
1.0pt;padding:3.0pt 0cm 0cm
0cm;font-size:10.0pt;font-family:"Tahoma","sans-serif""><b>From:</b>
Ken Murchison<br>
<b>Sent:</b> Friday, November 16, 2018 13:17<br>
<b>To:</b> Info-cyrus<br>
<b>Subject:</b> Re: WebDAV folders internally have hundreds of
copies of the same few files<br>
</div>
<br>
</div>
<span type="cite"
cite="mid:56b3ce01-19a5-31f7-a4cb-d965410aeb7c@fastmail.com"
style="display: block; word-break: break-all; margin: 7px 0 0 0;
padding: 0; line-height:0"></span>
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<p><br>
</p>
<div class="moz-cite-prefix">On 11/16/18 1:19 AM, Anatoli wrote:<br>
</div>
<blockquote type="cite"
cite="mid:9e032a3e-36c4-3a3b-7278-bab305567cda@anatoli.ws">
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<div style="font-size:10.0pt;font-family:Verdana,Arial">Ken,<br>
<br>
> If you login as an admin, you should be able to SELECT
the mailbox and use normal IMAP commands. Alternatively, if
you add "+DAV" to a regular userid, this will also allow
SELECTing of DAV collection mailboxes.<br>
<br>
When I do <font face="Courier New">imtest -a mailadmin</font>
and then issue <font face="Courier New">a002 select
#drive/folder</font>, I get:<br>
<font face="Courier New"><br>
a002 NO Invalid mailbox type<br>
</font></div>
</div>
</blockquote>
<p><br>
</p>
<p>It appears that just logging in as an admin won't do the trick.</p>
<p><br>
</p>
<p><br>
</p>
<blockquote type="cite"
cite="mid:9e032a3e-36c4-3a3b-7278-bab305567cda@anatoli.ws">
<div id="smartTemplate4-quoteHeader">
<div style="font-size:10.0pt;font-family:Verdana,Arial"><font
face="Courier New"> </font><br>
When I do <font face="Courier New">imtest -a mailadmin+DAV</font>,
I get (<font face="Courier New">XX</font> replaces the real
auth value):<br>
<br>
<font face="Courier New">C: A01 AUTHENTICATE PLAIN
XXXXXXXXXXXXXXXXXXX<br>
S: A01 NO authentication failure<br>
Authentication failed. generic failure<br>
</font><br>
I've also tried these combinations with the same result: <a
class="moz-txt-link-rfc2396E"
href="mailto:user@domain.tld+DAV" moz-do-not-send="true">"user@domain.tld+DAV"</a>
and <a class="moz-txt-link-rfc2396E"
href="mailto:user+DAV@domain.tld" moz-do-not-send="true">"user+DAV@domain.tld"</a>.
Am I doing it wrong?<br>
</div>
</div>
</blockquote>
<p><br>
</p>
<p>Enable the imapmagicplus option in imapd.conf</p>
<p><br>
</p>
<p><br>
</p>
<blockquote type="cite"
cite="mid:9e032a3e-36c4-3a3b-7278-bab305567cda@anatoli.ws">
<div id="smartTemplate4-quoteHeader">
<div style="font-size:10.0pt;font-family:Verdana,Arial"> <br>
Independently of this, is there a way to obtain the details
about the flags for each message in a folder directly from the
db files? My idea is to rsync the Cyrus store where the WebDAV
is located to some other folder (probably on another server),
purge there the files marked as deleted and backup the
remaining files, all this without altering the Cyrus store. Is
it possible?<br>
<br>
<br>
> If the append of the resource into the mailbox, or
updating the DAV db entry fails, the operation should be
reverted, with partial saving done. Which version of Cyrus
are you using?<br>
<br>
Currently it is 3.0.5, but I can upgrade if there were any
related changes in the later versions. What I was observing is
that if a PC (LibreOffice Calc on Ubuntu 16.04, the folder
mounted with davfs2) crashes in the middle of saving a file on
the server, the result was a damaged file: some 400 bytes
instead of 3-4Mb of a real file.<br>
<br>
I was thinking that maybe when the TCP stream hangs in the
middle, Cyrus would interpret it as an end of data and write a
file, but I've just tried to make some tests killing <font
face="Courier New">mount.davfs2</font> process and/or
blocking the stream with iptables in the middle of file
transmission and Cyrus responded correctly. For killing <font
face="Courier New">mount.davfs2</font> it showed in the
corresponding log file the bytestream followed by:<br>
<br>
<font face="Courier New">HTTP/1.1 400 Bad Request<br>
<br>
Unable to read body data<br>
</font><br>
And for blocking the stream with iptables it was showing the
bytestream ending where the transmission stopped, without the
400 Bad Request, but in both cases the original file was not
modified by the partial upload. So it appears the problem is
elsewhere.<br>
<br>
<br>
Regards,<br>
Anatoli<br>
<br>
</div>
<div style="border:none;border-top:solid #B5C4DF


1.0pt;padding:3.0pt
0cm
0cm
0cm;font-size:10.0pt;font-family:"Tahoma","sans-serif""><b>From:</b>
Ken Murchison<br>
<b>Sent:</b> Thursday, November 15, 2018 14:09<br>
<b>To:</b> Info-cyrus<br>
<b>Subject:</b> Re: WebDAV folders internally have hundreds of
copies of the same few files<br>
</div>
<br>
</div>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<p><br>
</p>
<div class="moz-cite-prefix">On 11/15/18 1:48 AM, Anatoli wrote:<br>
</div>
<blockquote type="cite"
cite="mid:377b8a00-5c8d-3c86-342a-61f4526b0015@anatoli.ws">
<meta http-equiv="Content-Type" content="text/html;
charset=UTF-8">
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<div style="font-size:10.0pt;font-family:Verdana,Arial">Hi
Ken,<br>
<br>
Thanks a lot for the clarification, everything makes sense
now. How can I list the files marked for deletion and those
that are not marked? <font face="Courier New">unexpunge</font>
can provide the list of files marked for deletion, is there
any better way to list them, directly reading the DB? How to
list those that are not marked?<br>
</div>
</div>
</blockquote>
<p><br>
</p>
<p>If you login as an admin, you should be able to SELECT the
mailbox and use normal IMAP commands. Alternatively, if you add
"+DAV" to a regular userid, this will also allow SELECTing of
DAV collection mailboxes.</p>
<p><br>
</p>
<blockquote type="cite"
cite="mid:377b8a00-5c8d-3c86-342a-61f4526b0015@anatoli.ws">
<div id="smartTemplate4-quoteHeader">
<div style="font-size:10.0pt;font-family:Verdana,Arial"> One
more question, related: we got a client who's PC was
crashing exactly during the modify operation (some issue
with the PC hardware triggered by Excel save operation,
probably a RAM spike touching some bad blocks). As a result,
the file in Cyrus was becoming damaged, i.e. partially
saved. Is it expected?<br>
<br>
Shouldn't Cyrus update the db with the pointer to the new
file (a new message in the store) only if the operation
completes successfully (e.g. the WebDAV messages exchange
completes and the connection is closed at the right time or
something similar)?<br>
</div>
</div>
</blockquote>
<p><br>
</p>
<p>If the append of the resource into the mailbox, or updating the
DAV db entry fails, the operation should be reverted, with
partial saving done. Which version of Cyrus are you using?</p>
<p><br>
</p>
<br>
<blockquote type="cite"
cite="mid:377b8a00-5c8d-3c86-342a-61f4526b0015@anatoli.ws">
<div id="smartTemplate4-quoteHeader">
<div style="border:none;border-top:solid

#B5C4DF



1.0pt;padding:3.0pt
0cm
0cm
0cm;font-size:10.0pt;font-family:"Tahoma","sans-serif""><b>From:</b>
Ken Murchison<br>
<b>Sent:</b> Wednesday, November 14, 2018 10:54<br>
<b>To:</b> Info-cyrus<br>
<b>Subject:</b> Re: WebDAV folders internally have hundreds
of copies of the same few files<br>
</div>
<br>
</div>
<meta http-equiv="Content-Type" content="text/html;
charset=UTF-8">
<p><br>
</p>
<div class="moz-cite-prefix">On 11/13/18 10:15 PM, Anatoli
wrote:<br>
</div>
<blockquote type="cite"
cite="mid:024e49fa-74d2-613f-1d5a-36497dffae04@anatoli.ws">
<meta http-equiv="content-type" content="text/html;
charset=UTF-8">
<div id="smartTemplate4-template">
<div style="font-size:10.0pt;font-family:Verdana,Arial"> Hi,<br>
<br>
I'm not sure this is due to some configuration option, bug
or feature, but I'm observing some folders on Cyrus HTTP
WebDAV server having hundreds (995 at this moment to be
precise) internal files in the format "NNN." that
correspond to the same file but different versions in
time.<br>
<br>
There are 2-3 files (xls) in the folder that are edited
constantly during the day and it looks like each save
operation creates a new file. The files are of some 3-5Mb
each. In the explorer/web view there are only a couple of
files with a total size of 17.5Mb, but the reported disk
usage for the folder is of 1.6Gb.<br>
<br>
Could someone please shed some light on what's going on
and how to make each file visible to the users to be
stored in only one internal file?<br>
<br>
Thanks,<br>
Anatoli</div>
</div>
</blockquote>
<p><br>
</p>
<p>Because *DAV is layered on top of an IMAP store, we have to
abide by IMAP semantics in which messages (in this case DAV
resources) are immutable. Therefore, we can NOT overwrite an
existing message in the mailbox. Each change MUST result in a
new message. However, the server does mark the previous
version(s) as deleted and expunged, which means that they will
eventually be removed by cyr_expire. If you aren't running
cyr_expire, you should consider adding an event to cyrus.conf
to remove expunged messages (see -X option).<br>
</p>
<pre class="moz-signature" cols="72">--
Ken Murchison
Cyrus Development Team
FastMail US LLC</pre>
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Cyrus Development Team
FastMail US LLC</pre>
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