Crash on remote folder cur, new and tmp

[agowa]

General informations

• system/distribution (with version): ArchLinux
• offlineimap version (offlineimap -V): offlineimap v7.2.3, imaplib2 v2.57 (bundled), Python v2.7.16, OpenSSL 1.1.1b 26 Feb 2019
• Python version: Python 2.7.16
• server name or domain: onprem exchange
• CLI options: offlineimap -o -u basic -1

Configuration file offlineimaprc

[general]
accounts = ExampleExchange
ui = quiet
fsync = false

[mbnames]
enabled = yes
filename = ~/Mutt/muttrc.mailboxes
header = "mailboxes "
peritem = "+%(accountname)s/%(foldername)s"
sep = " "
footer = "\n"
incremental = no

[Account ExampleExchange]
localrepository = LocalExampleExchange
remoterepository = RemoteExampleExchange

[Repository LocalExampleExchange]
type = Maildir
localfolders = ~/Mail

[Repository RemoteExampleExchange]
type = IMAP
remotehost = mail.example.com
remoteport = 993
remoteuser = <<<USERNAME>>>
remotepass = <<<PASSWORD>>>
ssl_version = tls1_2
tls_level = tls_secure
sslcacertfile = OS-DEFAULT
maxconnections = 1
singlethreadperfolder = yes

pythonfile (if any)

REMOVE PRIVATE DATA.

Logs, error

Syncing Aufgaben: IMAP -> Maildir
ERROR: getfolder() asked for a nonexisting folder 'cur'.
*** Finished account 'ExampleExchange' in 0:00
ERROR: Exceptions occurred during the run!
ERROR: getfolder() asked for a nonexisting folder 'cur'.

Traceback:
  File "/usr/lib/python2.7/site-packages/offlineimap/accounts.py", line 283, in syncrunner
    self.__sync()
  File "/usr/lib/python2.7/site-packages/offlineimap/accounts.py", line 390, in __sync
    localfolder = self.get_local_folder(remotefolder)
  File "/usr/lib/python2.7/site-packages/offlineimap/accounts.py", line 312, in get_local_folder
    replace(self.remoterepos.getsep(), self.localrepos.getsep()))
  File "/usr/lib/python2.7/site-packages/offlineimap/repository/Maildir.py", line 149, in getfolder
    "folder '%s'."% foldername, OfflineImapError.ERROR.FOLDER)

Steps to reproduce the error

Create a folder named cur, new or tmp on the IMAP server and try to sync.

[agowa]

And if the remote is a localized email server (e.g. Inbox is called "Posteingang") but the user created an additional folder named INBOX it also crashes:

Creating folder INBOX[RemoteExampleExchange]
ERROR: Creating folder INBOX on repository RemoteExampleExchange
  Folder 'INBOX'[RemoteExampleExchange] could not be created. Server responded: ('NO', ['Mailbox already exists.'])
ERROR: Folder 'INBOX'[RemoteExampleExchange] could not be created. Server responded: ('NO', ['Mailbox already exists.'])
*** Finished account 'ExampleExchange' in 0:01
ERROR: Exceptions occurred during the run!
ERROR: Creating folder INBOX on repository RemoteExampleExchange
  Folder 'INBOX'[RemoteExampleExchange] could not be created. Server responded: ('NO', ['Mailbox already exists.'])

Traceback:
  File "/usr/lib/python2.7/site-packages/offlineimap/repository/Base.py", line 271, in sync_folder_structure
    remote_repo.makefolder(remote_name)
  File "/usr/lib/python2.7/site-packages/offlineimap/repository/IMAP.py", line 567, in makefolder
    OfflineImapError.ERROR.FOLDER)

ERROR: Folder 'INBOX'[RemoteExampleExchange] could not be created. Server responded: ('NO', ['Mailbox already exists.'])

Traceback:
  File "/usr/lib/python2.7/site-packages/offlineimap/accounts.py", line 283, in syncrunner
    self.__sync()
  File "/usr/lib/python2.7/site-packages/offlineimap/accounts.py", line 362, in __sync
    remoterepos.sync_folder_structure(localrepos, statusrepos)
  File "/usr/lib/python2.7/site-packages/offlineimap/repository/Base.py", line 271, in sync_folder_structure
    remote_repo.makefolder(remote_name)
  File "/usr/lib/python2.7/site-packages/offlineimap/repository/IMAP.py", line 567, in makefolder
    OfflineImapError.ERROR.FOLDER)

[nicolas33]

Do you run the next branch or the official v7.2.3 release? I think this issue might come from this change #599.

[agowa]

I'm using the version from archlinux repositories. Version:offlineimap v7.2.3, imaplib2 v2.57 (bundled), Python v2.7.16, OpenSSL 1.1.1b 26 Feb 2019 Package: https://www.archlinux.org/packages/community/any/offlineimap/ And the build file: https://git.archlinux.org/svntogit/community.git/tree/trunk/PKGBUILD?h=packages/offlineimap