dovecot - Jul 2015 - "NOTIFY SET (mailboxes INBOX (...))" crashes the IMAP client

Hi list,

The NOTIFY extension (RFC 5465) works fine for mailboxes in the
"virtual/"
namespace, but it crashes the IMAP client when used with a mailbox in
the empty "" namespace:

    ~$ /usr/lib/dovecot/imap
    * PREAUTH [CAPABILITY IMAP4rev1 ? NOTIFY SPECIAL-USE] Logged in as guilhem
    a NAMESPACE
    * NAMESPACE (("" "/")("virtual/"
"/")) NIL NIL
    a OK Namespace completed.
    b NOTIFY SET (mailboxes virtual/all (MessageNew MessageExpunge))
    b OK NOTIFY completed (0.001 secs).
    c NOTIFY SET (mailboxes INBOX (MessageNew MessageExpunge))
    imap(guilhem): Panic: file mail-namespace.c: line 679 (mail_namespace_find):
assertion failed: (ns != NULL)
    imap(guilhem): Error: Raw backtrace: ?
    Aborted

The "subtree" mailbox filter has the same problem, but the
non-parameterized ones ("inboxes", "personal" and
"subscribed") work
fine.

You'll find the output of ?dovecot -n? enclosed.
Cheers,
-- 
Guilhem.
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# 2.2.18: /etc/dovecot/dovecot.conf
# OS: Linux 4.0.0-2-686-pae i686 Debian stretch/sid 
listen = 127.0.0.1, ::1
mail_location = maildir:~/mail
mail_plugins = virtual
mailbox_list_index = yes
namespace inbox {
  inbox = yes
  location = 
  mailbox DRAFTS {
    auto = create
    special_use = \Drafts
  }
  mailbox SENT {
    auto = subscribe
    special_use = \Sent
  }
  mailbox SPAM {
    auto = create
    special_use = \Junk
  }
  mailbox TRASH {
    auto = create
    special_use = \Trash
  }
  mailbox virtual/all {
    special_use = \All
  }
  mailbox virtual/flagged {
    special_use = \Flagged
  }
  prefix = 
  separator = /
}
namespace virtual {
  hidden = no
  list = no
  location = virtual:~/mail/virtual
  prefix = virtual/
  separator = /
}
passdb {
  driver = pam
}
plugin {
  sieve = ~/.dovecot.sieve
  sieve_dir = ~/sieve
}
protocols = " imap"
service imap-login {
  inet_listener imap {
    port = 0
  }
  inet_listener imaps {
    port = 0
  }
}
ssl = no
userdb {
  driver = passwd
}
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On Sun, 19 Jul 2015 at 19:21:16 +0200, Guilhem Moulin
wrote:
> The "subtree" mailbox filter has the same problem, but the
> non-parameterized ones ("inboxes", "personal" and
"subscribed") work
> fine.
Actually there are further problem with the INBOX namespace, to which I'm
subscribed:

    $ /usr/lib/dovecot/imap
    S1: * PREAUTH [CAPABILITY IMAP4rev1 ? MOVE NOTIFY SPECIAL-USE] Logged in as
guilhem
    C1: a1 LIST "" (INBOX TRASH) RETURN (SUBSCRIBED)
    S1 * LIST (\Subscribed \UnMarked) "/" TRASH
    S1 * LIST (\Subscribed) "/" INBOX
    S1: a1 OK List completed (0.003 secs).
    C1: b1 NOTIFY SET (SUBSCRIBED (MessageNew MessageExpunge FlagChange))
    S1: b1 OK NOTIFY completed (0.002 secs).

    $ /usr/lib/dovecot/imap
    S2: * PREAUTH [CAPABILITY IMAP4rev1 ? MOVE NOTIFY SPECIAL-USE] Logged in as
guilhem
    C2: a2 APPEND INBOX {1+}
    C2: x
    S2: a2 OK [APPENDUID 1384472528 26087] Append completed (0.008 secs).

This crashes S1 as well:

    S1: imap(guilhem): Panic: file mail-storage.c: line 1511
(mailbox_is_subscribed): assertion failed: (box->list->subscriptions !=
NULL)
    S1: imap(guilhem): Error: Raw backtrace: [?]
    S1: Aborted

This might be related to [0] as it is INBOX-specific as well: APPENDing
a message to TRASH (to which I'm also subscribed) triggers the
MessageNew notification as expected.

    S1: * STATUS TRASH (MESSAGES 3407 UIDNEXT 113820 UNSEEN 1)

-- 
Guilhem.

[0] http://dovecot.org/pipermail/dovecot/2015-July/101514.html
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On 07/19/2015 08:21 PM, Guilhem Moulin wrote:
> Hi list,
> 
> The NOTIFY extension (RFC 5465) works fine for mailboxes in the
"virtual/"
> namespace, but it crashes the IMAP client when used with a mailbox in
> the empty "" namespace:
Fixed: http://hg.dovecot.org/dovecot-2.2/rev/fae5feef70af
>     ~$ /usr/lib/dovecot/imap
>     * PREAUTH [CAPABILITY IMAP4rev1 ? NOTIFY SPECIAL-USE] Logged in as
guilhem
>     a NAMESPACE
>     * NAMESPACE (("" "/")("virtual/"
"/")) NIL NIL
>     a OK Namespace completed.
>     b NOTIFY SET (mailboxes virtual/all (MessageNew MessageExpunge))
>     b OK NOTIFY completed (0.001 secs).
>     c NOTIFY SET (mailboxes INBOX (MessageNew MessageExpunge))
>     imap(guilhem): Panic: file mail-namespace.c: line 679
(mail_namespace_find): assertion failed: (ns != NULL)
>     imap(guilhem): Error: Raw backtrace: ?
>     Aborted
> 
> The "subtree" mailbox filter has the same problem, but the
> non-parameterized ones ("inboxes", "personal" and
"subscribed") work
> fine.
> 
> You'll find the output of ?dovecot -n? enclosed.
> Cheers,
>

On 07/26/2015 07:00 PM, Guilhem Moulin wrote:
> On Sun, 19 Jul 2015 at 19:21:16 +0200, Guilhem Moulin wrote:
>> The "subtree" mailbox filter has the same problem, but the
>> non-parameterized ones ("inboxes", "personal" and
"subscribed") work
>> fine.
> 
> Actually there are further problem with the INBOX namespace, to which
I'm
> subscribed:
> 
>     $ /usr/lib/dovecot/imap
>     S1: * PREAUTH [CAPABILITY IMAP4rev1 ? MOVE NOTIFY SPECIAL-USE] Logged
in as guilhem
>     C1: a1 LIST "" (INBOX TRASH) RETURN (SUBSCRIBED)
>     S1 * LIST (\Subscribed \UnMarked) "/" TRASH
>     S1 * LIST (\Subscribed) "/" INBOX
>     S1: a1 OK List completed (0.003 secs).
>     C1: b1 NOTIFY SET (SUBSCRIBED (MessageNew MessageExpunge FlagChange))
>     S1: b1 OK NOTIFY completed (0.002 secs).
> 
>     $ /usr/lib/dovecot/imap
>     S2: * PREAUTH [CAPABILITY IMAP4rev1 ? MOVE NOTIFY SPECIAL-USE] Logged
in as guilhem
>     C2: a2 APPEND INBOX {1+}
>     C2: x
>     S2: a2 OK [APPENDUID 1384472528 26087] Append completed (0.008 secs).
> 
> This crashes S1 as well:
> 
>     S1: imap(guilhem): Panic: file mail-storage.c: line 1511
(mailbox_is_subscribed): assertion failed: (box->list->subscriptions !=
NULL)
Fixed: http://hg.dovecot.org/dovecot-2.2/rev/73acc7075146