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# $Id: mail.rb,v 1.29 2010/06/07 08:51:25 chabannf Exp $
#
# CONTACT : zonecheck@nic.fr
# AUTHOR : Stephane D'Alu <sdalu@nic.fr>
#
# CREATED : 2002/09/25 08:58:17
# REVISION : $Revision: 1.29 $
# DATE : $Date: 2010/06/07 08:51:25 $
#
# CONTRIBUTORS: (see also CREDITS file)
#
#
# LICENSE : GPL v3
# COPYRIGHT : AFNIC (c) 2003
#
# This file is part of ZoneCheck.
#
# ZoneCheck is free software; you can redistribute it and/or modify it
# under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 3 of the License, or
# (at your option) any later version.
#
# ZoneCheck is distributed in the hope that it will be useful, but
# WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
# General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with ZoneCheck; if not, write to the Free Software Foundation,
# Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
#
module ZoneCheck
require 'socket'
require 'timeout'
##
##
##
class Mail
##
##
##
class MailError < StandardError
end
def initialize(mhost, mip, dbgio=nil)
@myhostname = Socket::gethostname
@mhost = mhost
@mip = mip
@mrelay = nil
@dbgio = dbgio
end
def open(tout=nil)
Timeout::timeout(tout) {
@mrelay = TCPSocket::new(@mip, 25)
}
end
def fake_info(user, mdest, mfrom)
@user = user
@mdest = mdest
@mfrom = mfrom
@openrelay_testlist = [
[ "Test 0",
"spamtest@#{@mhost}", "\"nobody@#{@mdest}\"" ],
[ "Test 1",
"spamtest@#{@mdest}", "nobody@#{@mdest}" ],
[ "Test 2",
"spamtest@#{@mfrom}", "nobody@#{@mdest}" ],
[ "Test 3",
"spamtest@localhost", "nobody@#{@mdest}" ],
[ "Test 4",
"spamtest", "nobody@#{@mdest}" ],
[ "Test 5",
"", "nobody@#{@mdest}" ],
[ "Test 6",
"spamtest@#{@mhost}", "nobody@#{@mdest}" ],
[ "Test 7",
"spamtest@[#{@mip}]", "nobody@#{@mdest}" ],
[ "Test 8",
"spamtest@#{@mhost}", "nobody%#{@mdest}@#{@mhost}" ],
[ "Test 9",
"spamtest@#{@mhost}", "nobody%#{@mdest}@[#{@mip}]" ],
[ "Test 10",
"spamtest@#{@mhost}", "\"nobody@#{@mdest}\"" ],
[ "Test 11",
"spamtest@#{@mhost}", "\"nobody%#{@mdest}\"" ],
[ "Test 12",
"spamtest@[#{@mip}]", "\"nobody@#{@mdest}@#{@mhost}\""],
[ "Test 13",
"spamtest@#{@mhost}", "\"nobody@#{@mdest}\"@[#{@mip}]"],
[ "Test 14",
"spamtest@#{@mhost}", "nobody@#{@mdest}@[#{@mip}]" ],
[ "Test 15",
"spamtest@[#{@mip}]", "@#{@mhost}:nobody@#{@mdest}" ],
[ "Test 16",
"spamtest@#{@mhost}", "@[#{@mip}]:nobody@#{@mdest}" ],
[ "Test 17",
"spamtest@[#{@mip}]", "#{@mdest}!nobody" ],
[ "Test 18",
"spamtest@#{@mhost}", "#{@mdest}!nobody@[#{@mip}]" ],
[ "test 19",
"postmaster@#{@mhost}", "nobody@#{@mdest}" ] ]
end
def close
@mrelay.close
end
def cmd(str)
if str
@dbgio << ">> #{str}\n" if @dbgio
@mrelay.write("#{str}\r\n") ; @mrelay.flush
end
begin
desc = ""
while true
# Bug Fix by Romuald
# Timeout added to SMTP requests if server is not responding
line = nil
Timeout.timeout(10, Timeout::Error) {
line = @mrelay.readline
}
@dbgio << "<< #{line}" if @dbgio
case line
when NilClass then raise ZoneCheck::Mail::MailError, "parsing error"
when /^(\d{3}) (.*)$/ then return [ $1.to_i, desc << $2 ]
when /^(\d{3})-(.*)$/ then desc << $2
else raise ZoneCheck::Mail::MailError, "parsing error"
end
end
rescue EOFError
raise ZoneCheck::Mail::MailError, "Unexpected closing of connection"
rescue Timeout::Error
raise ZoneCheck::Mail::MailError, "Timeout from SMTP server"
end
# NOT REACHED
end
def banner ; cmd(nil) ; end
def helo(host) ; cmd("HELO #{host.gsub(/\.$/, "")}") ; end
def vrfy(user) ; cmd("VRFY #{user.gsub(/\.$/, "")}") ; end
def mail_from(from) ; cmd("MAIL FROM:<#{from.gsub(/\.$/, "")}>") ; end
def rcpt_to(to) ; cmd("RCPT TO:<#{to.gsub(/\.$/, "")}>") ; end
def rset ; cmd("RSET") ; end
def quit ; cmd("QUIT") ; end
def test_userexists(user, use_vrfy=false)
if use_vrfy
case vrfy(user)[0]
when 250, 251, 252 then rset ; return true
end
end
mail_from("#{@user}@#{@mdest}")
res = rcpt_to(user)[0] == 250
rset
res
end
def test_openrelay(count=1)
tests = [ @openrelay_testlist[1] ]
tests.each { |name, from, to|
if (r = mail_from(from)[0]) == 250
case rcpt_to(to)[0]
when 250..259 then return true
end
else
raise ZoneCheck::Mail::MailError, "Unexpected return code #{r}"
end
rset
}
false
end
end
# 500 Syntax error, command unrecognized
# [This may include errors such as command line too long]
# 501 Syntax error in parameters or arguments
# 502 Command not implemented
# 503 Bad sequence of commands
# 504 Command parameter not implemented
#
# 211 System status, or system help reply
# 214 Help message
# [Information on how to use the receiver or the meaning of a
# particular non-standard command; this reply is useful only
# to the human user]
#
# 220 <domain> Service ready
# 221 <domain> Service closing transmission channel
# 421 <domain> Service not available,
# closing transmission channel
# [This may be a reply to any command if the service knows it
# must shut down]
#
# 250 Requested mail action okay, completed
# 251 User not local; will forward to <forward-path>
# 450 Requested mail action not taken: mailbox unavailable
# [E.g., mailbox busy]
# 550 Requested action not taken: mailbox unavailable
# [E.g., mailbox not found, no access]
# 451 Requested action aborted: error in processing
# 551 User not local; please try <forward-path>
# 452 Requested action not taken: insufficient system storage
# 552 Requested mail action aborted: exceeded storage allocation
# 553 Requested action not taken: mailbox name not allowed
# [E.g., mailbox syntax incorrect]
# 354 Start mail input; end with <CRLF>.<CRLF>
# 554 Transaction failed
end
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