Can't view (other) users subfolders with imapd 3.0.6

Bron Gondwana brong at fastmailteam.com
Tue Jun 5 06:24:26 EDT 2018 

The patch looks correct at a reading.  It also looks like it's masking a
deeper bug, but that's fine - we can fix that later :)
Cheers,

Bron.


On Tue, Jun 5, 2018, at 19:27, Edda wrote:
> Hi Ellie,
> 
>  thank you very much for the handling of my patch! I don't have an
>  account on github. So, it's easiest for me to just dump it on the
>  users list. Please let me know if that bothers you.> 
>  As an author, "Edda" would be fine :) Thank you.
> 
>  Best regards,
>  Edda
> 
>  Am 05.06.18 um 04:50 schrieb ellie timoney:
>> Hi Edda,
>> 
>> Thanks for the patch!  I've added your email below to the GitHub
>> issue for this: https://github.com/cyrusimap/cyrus-imapd/issues/2362>> 
>> I'll review the patch and if it looks good, will include it in the
>> next 3.0 release.  I'll also forward-port it to master if necessary.>> 
>> Let me know if you'd like to submit this as a Pull Request, so your
>> GitHub identity can be credited for it, otherwise I'll just set your
>> email address as the author on the commit. :)>> 
>> Cheers,
>> 
>> ellie
>> 
>> 
>> On Mon, Jun 4, 2018, at 9:51 PM, Edda wrote:
>>> Hi,
>>> 
>>> I was able to reproduce the issue with 3.0.5 with these settings:
>>> 
>>> unixhierarchysep: yes
>>> altnamespace: no
>>> crossdomains: no
>>> 
>>> Key factor is unixhierarchysep on. (crossdomains is a special case.
>>> altnamespace on/off only looks different.)>>> 
>>> I did a lot of debugging and found out the following:
>>> 
>>> Compared to version 2.4.x and 2.5.x 3.0.x function list_data in
>>> ../imap/imapd.c does not transform the hierarchy separator.>>> 
>>> In function mboxlist_do_find (../imap/mboxlist.c) below "Other Users
>>> namespace" we have a prefix search. With "unixhierarchysep on" cyrus
>>> uses the wrong prefix (domainpat) for that search.>>> 
>>> Example:
>>> 
>>> . LIST "" "user/%"
>>> * LIST (\HasChildren) "/" user/bbb
>>> . OK Completed (0.000 secs 4 calls)
>>> . LIST "" "user/bbb/sub01"
>>> . OK Completed (0.000 secs)
>>> 
>>> In this case cyrus searches with domainpat: user.bbb/sub01/subsub01>>> 
>>> The prefix is previously generated from a variable called commonpat,
>>> which is used only for this specific search.>>> 
>>> So I fixed it there with this patch:
>>> 
>>> --- cyrus-imapd-3.0.5/imap/mboxlist.c.orig    2018-04-12
>>> 13:12:47.633956338 +0200>>> +++ cyrus-imapd-3.0.5/imap/mboxlist.c    2018-05-30
>>> 10:56:44.255724710 +0200>>> @@ -2774,6 +2774,10 @@
>>>              const char *pat = strarray_nth(patterns, i);
>>>              if (pat[prefixlen] != c) break;
>>>          }
>>> +        if (rock->namespace->hier_sep == '/') {
>>> +            if (c == '/') c = '.';
>>> +            else if (c == '.') c = DOTCHAR;
>>> +        }
>>>          if (i < patterns->count) break;
>>>          if (c == '*' || c == '%' || c == '?') break;
>>>          commonpat[prefixlen] = c;
>>> 
>>> 
>>> Now for the example above the search pattern is user.bbb.sub01 and
>>> the submailbox is returned correctly.>>> 
>>> . LIST "" "user/%"
>>> * LIST (\HasChildren) "/" user/bbb
>>> . OK Completed (0.000 secs 4 calls)
>>> . LIST "" "user/bbb/sub01"
>>> * LIST (\HasChildren) "/" user/bbb/sub01
>>> . OK Completed (0.000 secs 2 calls)
>>> . LIST "" "user/bbb/%"
>>> * LIST (\HasChildren) "/" user/bbb/sub01
>>> * LIST (\HasNoChildren) "/" user/bbb/sub.dot01
>>> . OK Completed (0.000 secs 3 calls)
>>> . SUBSCRIBE "user/bbb/sub01"
>>> . OK Completed
>>> . LSUB "" "user/*"
>>> * LSUB () "/" user/bbb/sub01
>>> . OK Completed (0.000 secs 1 calls)
>>> 
>>> The patch works fine in my test environment and I see no caveats
>>> yet. I would be very nice if someone could check it :-)>>> 
>>> Best regards,
>>> Edda
>>> 
>>> 
>>> 
>>> 
>>> Am 15.05.18 um 10:37 schrieb marco at nucleus.it:
>>>> Hi, after migrating from cyrus-imapd-2.4.17 to cyrus-imapd-3.0.6 we
>>>> cannot view (other) users subfolders.  Distro:Gentoo Cyrus version:
>>>> cyrus-imapd-3.0.6  imapd-3.0.5.conf attached  In the test
>>>> environment we created a user named "aaa" and "bbb", then we
>>>> created the folder "bbb/mytest/mysubtest". We set the acl for the
>>>> user aaa to share the mailbox bbb/mytest/mysubtest  user.aaa
>>>> 0 default aaa   lrswipkxtecdan  anonymous       p user.bbb        0
>>>> default bbb   lrswipkxtecdan  anonymous       p  aaa
>>>> lrswipkxtecdan user.bbb.mytest 0 default bbb   lrswipkxtecdan
>>>> anonymous       p  aaa     lrswipkxtecdan user.bbb.mytest.mysubtest
>>>> 0 default  bbb   lrswipkxtecdan  anonymous       p  aaa
>>>> lrswipkxtecdan  From whatever imap client, when we search for new
>>>> folders, user.bbb appears, but neither user.bbb.mytest nor
>>>> user.bbb.mytest.mysubtest.  This is the capture from imapd 3.0.6:
>>>> IMAP> 62 LIST "" "user/%" IMAP< * LIST (\HasChildren) "/" user/bbb
>>>> IMAP< 62 OK Completed (0.001 secs 3 calls) IMAP> 63 LIST ""
>>>> "user/bbb/%" IMAP< 63 OK Completed (0.000 secs) IMAP> 64 LSUB ""
>>>> "user/bbb/%" IMAP< 64 OK Completed (0.000 secs) IMAP> 65 LSUB ""
>>>> "user/%" IMAP< 65 OK Completed (0.000 secs) IMAP> 66 LSUB "" "%"
>>>> IMAP< * LSUB (\Noselect \HasChildren) "/" INBOX IMAP< 66 OK
>>>> Completed (0.000 secs 4 calls) IMAP> 16 NOOP IMAP< 16 OK Success
>>>> IMAP> 67 SUBSCRIBE "user/bbb" IMAP< 67 OK Completed IMAP> 68 LSUB
>>>> "" "%" IMAP< * LSUB (\Noselect \HasChildren) "/" INBOX IMAP< * LSUB
>>>> (\Noselect \HasChildren) "/" user IMAP< 68 OK Completed (0.001 secs
>>>> 5 calls) IMAP> 69 LSUB "" "INBOX/%" IMAP< * LSUB () "/"
>>>> INBOX/Drafts ... IMAP> 74 LSUB "" "user/%" IMAP< * LSUB () "/"
>>>> user/bbb IMAP< 74 OK Completed (0.001 secs 1 calls) IMAP> 75 LSUB
>>>> "" "user/bbb/%" IMAP< 75 OK Completed (0.001 secs)  Refreshing only
>>>> the  user.bbb folders nothing changed  IMAP> 83 LIST "" "user/%"
>>>> IMAP< * LIST (\HasChildren) "/" user/bbb IMAP< 83 OK Completed
>>>> (0.001 secs 3 calls) IMAP> 84 LIST "" "user/bbb/%" IMAP< 84 OK
>>>> Completed (0.001 secs) IMAP> 85 LSUB "" "user/bbb/%" IMAP< 85 OK
>>>> Completed (0.001 secs) IMAP> 86 LSUB "" "user/%" IMAP< * LSUB ()
>>>> "/" user/bbb IMAP< 86 OK Completed (0.001 secs 1 calls)  With net-mail/cyrus-imapd-
>>>> 2.4.17 all is working fine  imapd-2.4.17.conf attached  user.aaa
>>>> 0 default aaa   lrswipkxtecda   anonymous       p user.bbb        0
>>>> default bbb   lrswipkxtecda   anonymous       p  aaa
>>>> lrswipkxtecda user.bbb.mytest 0 default bbb   lrswipkxtecda
>>>> anonymous       p  aaa     lrswipkxtecda user.bbb.mytest.mysubtest
>>>> 0 default bbb   lrswipkxtecda  anonymous       p  aaa
>>>> lrswipkxtecda  if we search for new folders to subscribe user/bbb
>>>> and all the subfolders appeared  IMAP> 57 LIST "" "user/%" IMAP< *
>>>> LIST (\HasChildren) "/" user/bbb IMAP< 57 OK Completed (0.000 secs
>>>> 3 calls) IMAP> 58 LIST "" "user/bbb/%" IMAP< * LIST (\HasChildren)
>>>> "/" user/bbb/mytest IMAP< 58 OK Completed (0.000 secs 2 calls)
>>>> IMAP> 59 LIST "" "user/bbb/mytest/%" IMAP< * LIST (\HasNoChildren)
>>>> "/" user/bbb/mytest/mysubtest IMAP< 59 OK Completed (0.000 secs 2
>>>> calls) IMAP> 60 LIST "" "user/bbb/mytest/mysubtest/%" IMAP< 60 OK
>>>> Completed (0.000 secs) IMAP> 61 LSUB ""
>>>> "user/bbb/mytest/mysubtest/%" IMAP< 61 OK Completed (0.000 secs)
>>>> IMAP> 62 LSUB "" "user/bbb/mytest/%" IMAP< 62 OK Completed (0.000
>>>> secs) IMAP> 63 LSUB "" "user/bbb/%" IMAP< 63 OK Completed (0.000
>>>> secs) IMAP> 64 LSUB "" "user/%" IMAP< 64 OK Completed (0.000 secs)
>>>> IMAP> 65 LSUB "" "%" IMAP< * LSUB (\Noselect \HasChildren) "/"
>>>> INBOX IMAP< 65 OK Completed (0.000 secs 4 calls) IMAP> 66 NOOP
>>>> IMAP< 66 OK Completed IMAP> 67 SUBSCRIBE "user/bbb" IMAP< 67 OK
>>>> Completed IMAP> 68 SUBSCRIBE "user/bbb/mytest/mysubtest" IMAP< 68
>>>> OK Completed IMAP> 69 SUBSCRIBE "user/bbb/mytest" IMAP< 69 OK
>>>> Completed  Any suggestion?  Thanks for the support Marco

>>>>>>>> 
>>>>
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--
  Bron Gondwana, CEO, FastMail Pty Ltd
  brong at fastmailteam.com


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