[Tickets #13825] Re: Remi PHP update to 5.5.21-1 results in constant resyncing

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Ticket URL: https://bugs.horde.org/ticket/13825
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  Ticket             | 13825
  Updated By         | adorman at ironicdesign.com
  Summary            | Remi PHP update to 5.5.21-1 results in constant
                     | resyncing
  Queue              | Synchronization
  Version            | FRAMEWORK_5_2
  Type               | Bug
  State              | Feedback
  Priority           | 1. Low
  Milestone          |
  Patch              |
  Owners             | Michael Rubinsky
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adorman at ironicdesign.com (2015-02-09 17:21) wrote:

I have run into what appears to be a similar problem with an upgrade  
to PHP 5.6.5 (Debian apparently skipped 5.5.21)

According to our IMAP debug log, Horde is sending the following LIST  
command to Cyrus with the response as shown here:

C: 6 LIST () "" (INBOX * "Other Users/*""" "Shared Folders/*""")  
RETURN (SUBSCRIBED)
S: 6 BAD Invalid syntax in List command

I did some manual IMAP testing and determined that the problem is that  
the LIST command needs a space between the mailbox name like "Other  
Users/*" and the reference name "pattern", in this case "".

In a manual test using openssl to interact with our IMAP server, the  
LIST command below works fine and the only difference is the space  
after the mailbox name:

LIST () "" (INBOX * "Other Users/*" "" "Shared Folders/*" "") RETURN  
(SUBSCRIBED)

Apparently whatever PHP function being used to build the command  
string is no longer adding a space delimiter when adding the empty "".

I would be happy to test a fix if someone could let me know where the  
command string is being assembled.  I have been walking through the  
code in Horde/Imap/Client/ for several hours now and have not been  
able to determine where or how to add that needed space.

Thank you