Re: [Dovecot] Allowing tilde at start of mailbox names [listescape-plugin.c]

[Adam McDougall]

Timo Sirainen wrote:

I think the latest http://dovecot.org/patches/1.1/listescape-plugin.c
should work with latest Dovecot from hg. At least I fixed the most
obvious problems.

  
I have been using it for a few weeks and it has been working well, but 
yesterday I noticed it also seems to be escaping the \ (backslash) 
character in folder names.  This wouldn't be a problem except it breaks 
operation of folders that already had a \ in the name before the plugin 
was loaded.  This isn't a huge problem for us but I want to figure out 
if I should special case migration of folder names containing a \ to be 
the new internal representation \5c or if the plugin should just deal 
with normal \'s in the foldernames properly. 

Existing folder names with a \ such as \test still show up as \test in 
the mail client listing, but all known attempts to access it fail, I 
think internally it is probably looking for a folder named \5ctest and 
not finding it.  Thus the user cannot read, delete, rename, unsubscribe, 
anything.  They are stuck with a useless folder while the plugin is 
loaded.  I doubt many of our users have this situation and they can 
contact us to fix it if they notice, but I did have one user alert me of 
it.  On the other hand if a folder and its subscription are manually 
renamed to \5ctest, it works fine, or if they create a new one it uses a 
\5c on the backend. 

Thanks for assistance. 

Re: [Dovecot] Allowing tilde at start of mailbox names [listescape-plugin.c]

[pod]

 AM == Adam McDougall [EMAIL PROTECTED] writes:

AM I have been using it for a few weeks and it has been working well,
AM but yesterday I noticed it also seems to be escaping the \
AM (backslash) character in folder names.

listescape has to escape '\' so that applications of decode-encode and
encode-decode are idempotent.  If it did not do this a client that asked,
for example, to create a folder called a\2eb (i.e. issues CREATE a\2eb)
would be shown the folder as a.b by dovecot in a subsequent folder
listing.

AM This wouldn't be a problem except it breaks operation of folders
AM that already had a \ in the name before the plugin was loaded.
AM This isn't a huge problem for us but I want to figure out if I
AM should special case migration of folder names containing a \ to be
AM the new internal representation \5c or if the plugin should just
AM deal with normal \'s in the foldernames properly.

Yes, I think you need to rename folders that contained a '\' in the name
before you started using listescape, but clearly you should not rename any
folders that have subsequently been created by the listescape plugin that
contain a '\'.

Re: [Dovecot] Allowing tilde at start of mailbox names [listescape-plugin.c]

[Adam McDougall]

On Wed, Jul 25, 2007 at 08:28:52PM +0300, Timo Sirainen wrote:

  On 25.7.2007, at 19.13, pod wrote:
  
 TS It's mostly there just to make sure that ~/ or ~user/ can't be
 TS used to open mailboxes where you weren't supposed to have access
 TS to. I didn't think anyone would really want to have mailboxes
 TS beginning with ~. Do you really want them? (I don't think they
 TS were possible with UW-IMAP either?)
 
 Unfortunately yes it would be useful in my case to have them because of
 historical accident.
  
  How about if listescape plugin escaped it? That would make it possible to 
  use them but still safe against accidental problems.
  
  For others too, I implemented a plugin for escaping mailbox names with 
  Maildir so that it's possible to use '.' in mailbox names: 
  http://dovecot.org/patches/1.0/listescape-plugin.c
  
I am using the 1.1 version of this plugin.  So far it seems to be working fine.
Is there a chance of having it be an official plugin distributed with 1.1?
That would make it fit into my build environment alot cleaner, as well as 
a FreeBSD port I intend to submit so others can build 1.1 easily.  One way
or another I plan to keep using listescape and will need to find the best way
to keep it functioning alongside dovecot upgrades, even if that means compiling
and installing it manually each time.  Thanks.

Re: [Dovecot] Allowing tilde at start of mailbox names [listescape-plugin.c]

[Adam McDougall]

On Sun, Dec 02, 2007 at 03:01:51AM -0500, Adam McDougall wrote:

  On Wed, Jul 25, 2007 at 08:28:52PM +0300, Timo Sirainen wrote:
  
On 25.7.2007, at 19.13, pod wrote:

   TS It's mostly there just to make sure that ~/ or ~user/ can't be
   TS used to open mailboxes where you weren't supposed to have access
   TS to. I didn't think anyone would really want to have mailboxes
   TS beginning with ~. Do you really want them? (I don't think they
   TS were possible with UW-IMAP either?)
   
   Unfortunately yes it would be useful in my case to have them because of
   historical accident.

How about if listescape plugin escaped it? That would make it possible to 
use them but still safe against accidental problems.

For others too, I implemented a plugin for escaping mailbox names with 
Maildir so that it's possible to use '.' in mailbox names: 
http://dovecot.org/patches/1.0/listescape-plugin.c

  I am using the 1.1 version of this plugin.  So far it seems to be working 
fine.
  Is there a chance of having it be an official plugin distributed with 1.1?
  That would make it fit into my build environment alot cleaner, as well as 
  a FreeBSD port I intend to submit so others can build 1.1 easily.  One way
  or another I plan to keep using listescape and will need to find the best way
  to keep it functioning alongside dovecot upgrades, even if that means 
compiling
  and installing it manually each time.  Thanks.
  
Actually two issues came up.  I think they are both involving folder listing.

- In squirrelmail, if I am subscribed to #shared/decs with the listescape
plugin enabled, the shared folders such as #shared/decs/network are greyed out.
#shared/decs is a public namespace and the only reason I would be subscribed to
it is for Outlook Express's sake or so Squirrelmail will show the shared folder
hierarchy (same reason for subscribing to #shared, but being subscribed to 
#shared
doesn't seem to hurt anything).  I think squirrelmail sees the subscription to
the folder (I can subscribe to unsubscribed shared folders too) but when it 
tries
to LIST the folder, it gets nothing.

- In all programs, it seems like listing folders in my additional private hidden
namespaces comes up with nothing.  a LIST  mail/%  a OK List completed.
If I try to access a folder under mail/ directly by typing the path into mutt,
it works.  


with listescape:
---
a list  dot.test
* LIST (\HasNoChildren) . dot.test
a OK List completed.

a LIST  mail/
* LIST (\Noselect \HasChildren) / mail/
a OK List completed.

a LIST  mail/%
a OK List completed.

(a LSUB  * shows all the folders I am subscribed to, including 
#shared/decs/network)

a LSUB  #shared/%
* LSUB () / #shared/decs
a OK Lsub completed.

a LIST  #shared/decs
* LIST (\Noselect \HasChildren) / #shared/decs
a OK List completed.

a LSUB  #shared/decs/%
a OK Lsub completed.

a LIST  #shared/decs/network
a OK List completed.

(for some reason in squirrelmail, if I am unsubscribed from #shared/decs with 
the listescape
plugin enabled, the shared folders such as #shared/decs/network are not greyed 
out and work,
but I cant seem to easily reproduce that result with imap commands.


Without listescape loaded:
---
a list  dot\\2etest
* LIST (\HasNoChildren) . {10}
dot\2etest
a OK List completed.

a LIST  mail/
* LIST (\Noselect \HasChildren) / mail/
a OK List completed.

a LIST  mail/%
* LIST (\HasNoChildren) / mail/20041223
* LIST (\HasNoChildren) / mail/20050324
* LIST (\HasNoChildren) / mail/APA-MEA-DISCUSS
* LIST (\HasNoChildren) / mail/Drafts
* LIST (\HasNoChildren) / mail/IMAP
* LIST (\HasNoChildren) / mail/Junk E-mail
(etc, all the folders I expect)

a LSUB  #shared/%
* LSUB () / #shared/decs
a OK Lsub completed.

a LIST  #shared/decs
* LIST (\Noselect \HasChildren) / #shared/decs
a OK List completed.

a LSUB  #shared/decs/%
* LSUB () / #shared/decs/unixadmin
* LSUB () / #shared/decs/support
* LSUB () / #shared/decs/security
* LSUB () / #shared/decs/printmaster
* LSUB () / #shared/decs/postmaster
* LSUB () / #shared/decs/pcadmin
* LSUB () / #shared/decs/network
* LSUB () / #shared/decs/linuxadmin
a OK Lsub completed.

a LIST  #shared/decs/network
* LIST (\HasChildren) / #shared/decs/network
a OK List completed.



# 1.1.beta9: /usr/local/etc/dovecot.conf
ssl_cert_file: /usr/local/etc/apache2/ssl/mail.egr.msu.edu.pem
ssl_key_file: /usr/local/etc/apache2/ssl/mail.egr.msu.edu.pem
login_dir: /var/run/dovecot/login
login_executable: /usr/local/libexec/dovecot/imap-login
mail_max_userip_connections: 25
verbose_proctitle: yes
first_valid_uid: 1000
first_valid_gid: 1000
mail_extra_groups: postlocal
mail_location: 
maildir:%h/Maildir:CONTROL=%h/Maildir/dovecot/private/control:INDEX=%h/Maildir/dovecot/private/indexes
mmap_disable: yes
dotlock_use_excl: yes
mail_nfs_storage: yes
mail_nfs_index: yes
mail_plugins: acl fts fts_squat listescape
mail_log_max_lines_per_sec: 0