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Bug #13649

closed

Net::IMAP doesn't support response from a Microsoft Exchange server (which is not compliant with RFC standards)

Added by keysen (Jérémy Carlier) over 7 years ago. Updated almost 7 years ago.

Status:
Closed
Assignee:
shugo (Shugo Maeda)
Target version:
-
ruby -v:
2.3.1
Backport:
2.2: WONTFIX, 2.3: DONE, 2.4: DONE
[ruby-core:81641]

Description

Hello,

This day I wanted to use a mailbox hosted on a Microsoft Exchange server and it was not working.
I found this nice article relating the issue: http://claudiofloreani.blogspot.fr/2012/01/monkeypatching-ruby-imap-class-to-build.html

My solution to support those crappy server:

module Net
  class IMAP
    class ResponseParser
      def response
        token = lookahead
        case token.symbol
        when T_PLUS
          result = continue_req
        when T_STAR
          result = response_untagged
        else
          result = response_tagged
        end
        match(T_SPACE) if lookahead.symbol == T_SPACE
        match(T_CRLF)
        match(T_EOF)
        return result
      end
    end
  end
end

Step to reproduce: (require an horrible server :))

imap_connexion = Net::IMAP.new(localhost, 993, true, nil, false)
imap_connexion.status('INBOX', ["UIDNEXT", "UIDVALIDITY"])

Then the server should reply with:
"* STATUS INBOX (UIDNEXT 1 UIDVALIDITY 1585372) \r\n"

And the bug occurs because we have a space at the end of the line which is not in the RFC, but as usual Microsoft makes its own RFC...

If you have any questions, suggestions just ask, if I can help.

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