[Dovecot] being courier_imap compatible

[Bill Boebel]

On Wed, April 26, 2006 16:12, "Chad Leigh -- Shire.Net LLC" <chad at shire.net> said:

> OK, I am running (for many years now) an existing courier_imap maildir++
> setup with exim as the MTA.  
> I set up a namespace for dovecot, using the wiki as a guide, so:
> 
> namespace private {
>     separator = .
>     prefix = INBOX.
>     location = .
>     inbox = yes
>    hidden=no
> }
> 
> However, clicking on the folder does not show any messages at all.
> dovecot is not creating a subscription file inside the maildir
> (Mail.app does not allow you to subscribe to folders -- it subscribes
> to all existing folders for you)
> 
> And if I try and create a new folder inside the account I get a
> "CREATE" command failed, server error:  unknown namespace

This is what we're using and our Courier maildirs are able to work with Dovecot...

default_mail_env = maildir:~/
namespace private {
  separator = .
  prefix = INBOX.
  inbox = no
}
namespace private {
  separator = .
  prefix =
  inbox = yes
  hidden = yes
}

Also, here are patches to make Dovecot use Courier's subscription file properly...

---
  src/lib-storage/index/maildir/maildir-storage.h:
    -#define SUBSCRIPTION_FILE_NAME "subscriptions"
    +#define SUBSCRIPTION_FILE_NAME "courierimapsubscribed"

---    
  src/lib-storage/subscription-file/subscription-file.c
    @49
        unsigned int i;         // BB - added variable
    @55
        /* BB - changed loop to skip over lines with just
           INBOX and remove INBOX. from the beginning of the line,
           for courier-imap compatibility */
        for (i = 0;; i++) {

                while ((line = i_stream_next_line(input)) == NULL) {
                        switch (i_stream_read(input)) {
                        case -1:
                                if (input->stream_errno != 0 &&
                                    (input->stream_errno != ESTALE || !ignore_estale)) {
                                        subsfile_set_syscall_error(storage,
                                                                   "read()", path);
                                        *failed_r = TRUE;
                                }
                                return NULL;
                        case -2:
                                /* mailbox name too large */
                                mail_storage_set_critical(storage,
                                        "Subscription file %s contains lines longer "
                                        "than %u characters", path,
                                        MAX_MAILBOX_LENGTH);
                                *failed_r = TRUE;
                                return NULL;
                        }
                }

                /* BB - remove INBOX. from the beginning of the line,
                   for courier-imap compatibility */
                if (strcmp(line, "INBOX") == 0)
                        continue;
                if (strncmp(line, "INBOX.", 6) == 0)
                        line += 6;
                break;

        }
        /* BB - end changes */

    @147
                /* BB - prepend INBOX. for courier-imap compatibility */
                -if (o_stream_send_str(output, line) < 0 ||
                +if (o_stream_send_str(output, "INBOX.") < 0 ||
                +    o_stream_send_str(output, line) < 0 ||
    @150
    -line = t_strconcat(name, "\n", NULL);
    +/* BB - prepend INBOX. for courier-imap compatibility */
    +line = t_strconcat("INBOX.", name, "\n", NULL);