#!/usr/bin/env python


import sys
import os
import socket
import select
import string
import traceback
import urllib
import time

import msnlib
import msncb


"""
MSN Client

This is a fully usable msn client, which also serves as reference
implementation for msnlib-based code.
For further information refer to the documentation or the source (which is
always preferred).
Please direct any comments to the msnlib mailing list,
msnlib-devel@auriga.wearlab.de.
You can find more information, and the package itself, at
http://users.auriga.wearlab.de/~alb/msnlib
"""


#
# constant strings
#

help = """\
Command list:
status [mode]	Shows the current status, or changes it to "mode", which can
		be one of: online away busy brb phone lunch invisible idle
q		Quits the program
w		Prints your entire contact list
ww		Prints your entire contact list, including email addresses
wd		Prints the differences between your forward and reverse lists
e		Prints your online contacts
ee		Prints your online contacts, including email addresses
eg		Prints your online contacts with the groups
wr		Prints your reverse contact list
h		Shows your incoming message history
add e [n] [g] 	Adds the user "e" with the nick "n" to the group "g"
del nick	Deletes the user with nick "nick"
ren nick new	Renames the user with nick "nick" to appear as "new"
lignore [nick]	Locally ignores the user, or display the locally ignored users
lunignore nick	Removes a user from the locally ignored users list
block nick	Blocks a user
unblock nick	Unblocks a blocked user
g		Shows the group list
gadd gname	Adds the group "gname"
gdel gname	Deletes the group "gname". Note that all the users in the
		group will be deleted too.
gren old new	Renames the group "old" with the name "new"
color [theme]	Shows or set the color theme to "theme"
close nick	Closes the switchboard connection with "nick"
config		Shows the configuration
info [nick]	Shows the user information and pending messages (if any),
		or our personal info
nick newnick	Changes your nick to "newnick"
privacy p a	Sets whether accept messages from people not on your list (p)
		and require authorization (a)
m nick text	Sends a message to "nick" with the "text"
a text		Sends a message to the last person you sent a message to
r text		Sends a message to the last person that sent you a message
invite u1 to u2	Invites u1 into the chat with u2

In most cases, where you are asked for a nick, you can alternatively enter the
email.  This makes it easier to handle people with weird or long nicks.
"""


#
# colors, for nice output
#

class color_default:
	def __init__(self):
		self.name =	'default'
		self.black = 	'\x1b[0;30m'
		self.red =	'\x1b[0;31m'
		self.green =	'\x1b[0;32m'
		self.yellow =	'\x1b[0;33m'
		self.blue =	'\x1b[0;34m'
		self.magenta =	'\x1b[0;35m'
		self.cyan =	'\x1b[0;36m'
		self.white =	'\x1b[0;37m'
		self.normal =	'\x1b[0m'
		self.bold =	'\x1b[1m'
		self.clear =	'\x1b[J'

class color_bw:
	def __init__(self):
		self.name =	'bw'
		self.black =	'\x1b[0;30m'
		self.red =	'\x1b[0m'
		self.green =	'\x1b[0m'
		self.yellow =	'\x1b[0m'
		self.blue =	'\x1b[0m'
		self.magenta =	'\x1b[0m'
		self.cyan =	'\x1b[0m'
		self.white =	'\x1b[0m'
		self.normal =	'\x1b[0m'
		self.bold =	'\x1b[0m'
		self.clear =	'\x1b[J'

color_classes = {
	'default':	color_default,
	'bw':		color_bw
}
c = color_classes['default']()


# command list for tab-completion purposes
command_list = [ 'a', 'add', 'block', 'close', 'color', 'config', 'del', 'e',
	'ee', 'eg', 'g', 'gadd', 'gdel', 'green', 'h', 'help', 'info',
	'invite', 'lignore', 'luignore', 'm', 'nick', 'privacy', 'q', 'r',
	'ren', 'status', 'unblock', 'w', 'wd', 'wr', 'ww' ]


#
# different useful prints
#

def printl(line, color = c.normal, bold = 0):
	"Prints a line with a color"
	out = ''
	if line and line[0] == '\r':
		clear_line()
	if bold:
		out = c.bold
	out = color + out + line + c.normal
	safe_write(out)
	safe_flush()

def perror(line):
	"Prints an error"
	out = ''
	out += c.yellow + c.bold + '!' + c.normal
	out += c.red + c.bold + '!' + c.normal
	out += c.blue + c.bold + '!' + c.normal
	out += ' ' + c.green + c.bold + line + c.normal + '\a'
	safe_write(out)
	safe_flush()

def pexc(line):
	"Prints an exception"
	out = '\n'
	out += ( c.cyan + c.bold + '!' + c.normal ) * 3
	safe_write(out)
	safe_write(c.bold + line)
	safe_flush()
	traceback.print_exc()
	safe_write(c.normal)
	safe_write('\n')
	safe_flush()

def print_list(md, only_online = 0, userlist = None, include_emails = 0):
	"Prints the user list"
	if not userlist:
		userlist = md.users
	ul = userlist.keys()
	ul.sort()
	for email in ul:
		u = userlist[email]
		if u.status != 'FLN':
			hl = 1
		else:
			if only_online:	continue
			hl = 0
		status = msnlib.reverse_status[u.status]
		printl('%7.7s :: %s' % (status, u.nick), bold = hl)
		if include_emails:
			printl(' (%s)' % (email), bold = hl)
		if 'B' in u.lists:
			printl(' [!]')
		if email not in md.reverse.keys():
			printl(' [X]')
		printl('\n')

def print_diff(md):
	"Prints the differences between forward and reverse lists"
	fwdl = md.users.keys()
	fwdl.sort()

	revl = md.reverse.keys()
	revl.sort()

	printl("People you have that don't have you:\n", bold = 1)
	for email in fwdl:
		if email not in revl:
			user = md.users[email]
			printl("    %s (%s)\n" % (user.nick, email))
	printl('\n')

	printl("People you don't have that have you:\n", bold = 1)
	for email in revl:
		if email not in fwdl:
			user = md.reverse[email]
			printl("    %s (%s)\n" % (user.nick, email))

def print_group_list(md):
	"Prints the group list"
	gids = md.groups.keys()
	gids.sort()
	for gid in gids:
		printl('%3.3s :: %s\n' % (gid, md.groups[gid]))

def print_grouped_list(md, only_online = 0, include_emails = 0):
	db = {}
	for gid in md.groups.keys():
		db[gid] = []
	for gid in md.groups.keys():
		for e in md.users.keys():
			if md.users[e].gid == gid:
				db[gid].append(e)
	gids = db.keys()
	gids.sort()
	for gid in gids:
		printl(':: %s ::\n' % md.groups[gid], bold = 1)
		ul = db[gid]
		ul.sort()
		for email in ul:
			u = m.users[email]
			if u.status != 'FLN':
				hl = 1
			else:
				if only_online: continue
				hl = 0
			status = msnlib.reverse_status[u.status]
			printl('\t%7.7s :: %s' % (status, u.nick), bold = hl)
			if include_emails:
				printl(' (%s)' % (email), bold = hl)
			if 'B' in u.lists:
				printl(' [!]')
			if email not in md.reverse.keys():
				printl(' [X]')
			printl('\n')

def print_user_info(email):
	"Prints the user information, and pending messages"
	u = m.users[email]
	out = c.bold
	out += c.bold + 'User info for ' + email + '\n'
	out += c.bold + 'Nick:\t\t' + c.normal + u.nick + '\n'
	out += c.bold + 'Status:\t\t' + c.normal + msnlib.reverse_status[u.status] + '\n'
	if 'B' in u.lists:
		out += c.bold + 'Mode:\t\t' + c.normal + 'blocked' + '\n'
	if u.gid != None:
		out += c.bold + 'Group:\t\t' + c.normal + m.groups[u.gid] + '\n'
	if u.realnick:
		out += c.bold + 'Real Nick:\t' + c.normal + u.realnick + '\n'
	if u.homep:
		out += c.bold + 'Home phone:\t' + c.normal + u.homep + '\n'
	if u.workp:
		out += c.bold + 'Work phone:\t' + c.normal + u.workp + '\n'
	if u.mobilep:
		out += c.bold + 'Mobile phone:\t' + c.normal + u.mobilep + '\n'
	if u.priv.has_key('typing') and u.priv['typing']:
		out += c.bold + 'Last typing at:\t' + c.normal
		out += time.asctime(time.localtime(u.priv['typing'])) + '\n'
	if u.sbd:
		out += c.bold + 'Switchboard:\t' + c.normal + str(u.sbd) + '\n'
		if u.sbd.msgqueue:
			out += c.bold + 'Pending messages:' + '\n'
			for msg in u.sbd.msgqueue:
				out += c.bold + '\t>>> ' + c.normal + msg + '\n'
	printl(out)

def print_prompt():
	"Prints the user prompt"
	safe_write('\r' + c.red + c.bold + '[msn] ' + c.normal)
	safe_flush()

def print_inc_msg(email, lines, eoh = 0, quiet = 0, ptime = 1, recvtime = 0):
	"""Prints an incoming message from a list of lines and an optional
	end-of-header pointer.  You can also pass the original received time as
	a parameter, this is used for history printed."""
	nick = email2nick(email)
	if not nick: nick = email
	if email in ignored:
		return
	if ptime:
		if recvtime:
			ctime = time.strftime('%I:%M:%S%p', time.localtime(recvtime))
		else:
			ctime = time.strftime('%I:%M:%S%p', now())
		printl('%s ' % ctime, c.blue)
	printl('%s' % nick, c.cyan, 1)
	if len(lines[eoh:]) == 1:
		printl(' <<< %s\n' % lines[eoh], c.yellow, 1)
	else:
		printl(' <<< \n\t', c.yellow, 1)
		msg = string.join(lines[eoh:], '\n\t')
		msg = msg.replace('\r', '')
		printl(msg + '\n', c.bold)
	beep(quiet)

def print_out_msg(nick, msg):
	"Prints an outgoing message"
	ctime = time.strftime('%I:%M:%S%p', now())
	printl('%s ' % ctime, c.blue)
	printl('%s' % nick, c.cyan, 1)
	printl(' >>> ', c.yellow, 1)
	printl('%s' % msg)


def beep(q = 0):
	"Beeps unless it's told to be quiet"
	if not q:
		printl('\a')


def safe_flush():
	"""Safely flushes stdout. It fixes a strange issue with flush and
	nonblocking io, when flushing too fast."""
	c = 0
	while c < 100:
		try:
			sys.stdout.flush()
			return
		except IOError:
			c +=1
			time.sleep(0.01 * c)
	raise Exception, 'flushed too many times, giving up. Please report!'

def safe_write(text):
	"""Safely writes to stdout. It fixes the same issue that safe_flush,
	that is, writing too fast raises errors due to nonblocking fd."""
	c = 1
	while c:
		try:
			sys.stdout.write(text)
			return
		except IOError:
			c += 1
			time.sleep(0.01 * c)
	raise Exception, 'wrote too many times, giving up. Please report!'


#
# useful functions
#

def quit(code = 0):
	"Exits"
	printl('Closing\n', c.green, 1)
	try:
		try:
			m.disconnect()
		except:
			pass
		global oldtermattr
		termios.tcsetattr(sys.stdin.fileno(), termios.TCSAFLUSH, oldtermattr)
	except:
		pass
	sys.exit(code)

def nick2email(nick):
	"Returns an email according to the given nick, or None if noone	matches"
	for email in m.users.keys():
		if m.users[email].nick == nick:
			return email
	if nick in m.users.keys():
		return nick
	return None

def email2nick(email):
	"Returns a nick accoriding to the given email, or None if noone matches"
	if email in m.users.keys():
		return m.users[email].nick
	else:
		return None

def findemailnick(email, begin):
	"""Check if the email/nick of the given user begins with the given
	beginning. Returns 1 if it matches the nick, or 2 if it matches the
	email."""
	if m.users[email].nick.find(begin) == 0:
		return 1
	elif email.find(begin) == 0:
		return 2
	return 0

# global variable for matchemail()
start_from = 0
def matchemail(begin, only_online = 0, start = 0):
	""""Returns a matching email/nick for the given beginning; it avoids
	beginnings with spaces. If only_online is equal to 1 searchs only for
	not offline users or users with an sbd.  If start=1 it iterates the
	last match and do a cyclical search."""

	global start_from

	if ' ' in begin:
		return None

	emails = m.users.keys()

	if start_from >= len(emails):
		# the list has changed while iterating, reset
		start_from = 0

	if start:
		pos = (start_from + 1) % len(emails)
	else:
		pos = start_from

	found = 0
	while not found:
		# we made a complete loop without matches
		if start and pos == start_from:
			break
		elif pos == (start_from - 1) % len(emails):
			break

		#msnlib.debug("l: %d %s\n" % (pos, emails[pos]))
		current = emails[pos]
		if only_online and m.users[current].status == 'FLN':
			pos = (pos + 1) % len(emails)
			continue
		if findemailnick(emails[pos], begin):
			found = 1
			break
		pos = (pos + 1) % len(emails)

	start_from = pos

	if found:
		if findemailnick(emails[pos], begin) == 1:
			# return the nick
			nick = email2nick(emails[pos])
			if ' ' in nick:
				return emails[pos]
			return nick
		else:
			return emails[pos]
	else:
		start_from = 0
		return None


def gname2gid(gname):
	"Returns a group name according to the given group id"
	for gid in m.groups.keys():
		if m.groups[gid] == gname:
			return gid
	return None

def get_config(file):
	"Parses a simple config file, and returns a var:value dict"
	try:
		fd = open(file)
	except:
		return None
	lines = fd.readlines()
	config = {}
	for i in lines:
		i = i.strip()
		if i.find('=') < 0:
			continue
		if i[0] == '#':
			continue
		var, value = i.split('=', 1)
		var = var.strip()
		value = value.strip()
		config[var] = value
	return config

def null(s):
	"Null function, useful to void debug ones"
	pass

def log_msg(email, type, msg, mtime = 0, users = []):
	"""Logs the message or event of the 'type', related to 'email',
	with the content 'msg', to a file in the specified directory.  See
	documentation for more specific details, specially about
	formatting."""

	if not config['log history']:
		return

	if config['profile']:
		prepend = config['profile'] + '::'
	else:
		prepend = ''
	if users:
		# copy and sort the user list, so we log always to the same
		# file regarding the order the users were joined
		# FIXME: sometimes we crash because filename is too long
		usorted = users[:]
		usorted.sort()
		file = config['history directory'] + '/' + prepend + 'M::'
		file += string.join(usorted, ',')
	else:
		file = config['history directory'] + '/' + prepend + email
	if not mtime:
		mtime = time.time()
	out = ''
	out += time.strftime('%d/%b/%Y %H:%M:%S ', time.localtime(mtime))
	out += email + ' '
	if type == 'in':
		out += '<<< '
		msg = msg.replace('\r', '')
		lines = msg.split('\n')
		if len(lines) == 1:
			 out += msg + '\n'
		else:
			out += '\n\t'
			out += string.join(lines[:], '\n\t')
			out += '\n'
	elif type == 'out':
		out += '>>> ' + msg + '\n'
	elif type == 'status':
		out += '*** ' + msg + '\n'
	elif type == 'multi':
		out += '+++ ' + msg + '\n'
	elif type == 'realnick':
		out += '--- ' + msg + '\n'

	fd = open(file, 'a')
	fd.write(out)
	fd.close()
	del(fd)
	return

def now():
	"Returns the current time, in tuple format"
	return time.localtime(time.time())


#
# terminal handling
#

# all this is _ugly_, a real mess; luckily it's pretty much self contained.
# if you're trying to follow the code, i highly recommend you to skip this
# section; you really don't need to know it, just think of redraw_cli() pretty
# much as print_prompt(), stdin_read() as sys.stdin.readline(), and
# clear_line() as printf('\r'). actually that's quite near true when we don't
# use termios.
# it has been written in a way that if termios is not available, we fall back
# to the normal and old behaviour which is guaranteed to work.

try:
	# all of this disables line-buffering on the terminal (thus allowing
	# char-by-char reads) and echoing (so we output whatever we want); and
	# finally sets the file nonblocking so we can read all that's
	# available without complications.
	# you should read termios and fcntl manpages to find out the details
	import termios
	stdinfd = sys.stdin.fileno()
	oldtermattr = termios.tcgetattr(stdinfd)
	newtermattr = termios.tcgetattr(stdinfd)
	newtermattr[3] = newtermattr[3] & ~termios.ICANON & ~termios.ECHO
	termios.tcsetattr(stdinfd, termios.TCSANOW, newtermattr)
	import fcntl, os
	fcntl.fcntl(stdinfd, fcntl.F_SETFL, os.O_NONBLOCK)
	del(newtermattr)
	use_termios = 1
except:
	use_termios = 0

# now we try to find out the console size; if we fail we fall back to
# the good old 80x24.
# note that the (' ' * 10) is just awful, but there is no sane way of
# doing this without using a C module. it's based on 'struct winsize',
# but as we only use the first 4 bytes, we don't ask for more; then we
# unpack the two shorts into (lenght, width)
try:
	import struct
	winsize = fcntl.ioctl(stdinfd, termios.TIOCGWINSZ, ' ' * 10)
	winsize = struct.unpack('hh', winsize[:4])
except:
	winsize = (24, 80)
screenwidth = winsize[1]

# input buffer, where all the characters written by the user are stored in
inbuf = ''

# vars to control the tabs completions:
# match of commands
matchc_last = 0
matchc_status = 0
matchc_root = ''
# match of last send/received
matchl_status = 0
# match of m command
matchm_status = 0
matchm_root = ''
# match of others arguments
matchp_status = 0
matchp_root = ''

# input history buffer, to store previous commands.
# we use a list [buffer, pointer] to avoid namespace pollution
inbuf_history = [[], -1]

def stdin_read():
	"""Reads from stdin, and acts in consecuense. If you don't use
	termios, it's almost the same as calling readline(); but otherwise it
	handles all the input reading."""
	global inbuf
	if not use_termios:
		inbuf = sys.stdin.readline()
		tmpbuf = inbuf
		inbuf = ''
		out = parse_cmd(tmpbuf)
		printl(out + '\n', c.green, 1)
		redraw_cli()
		return

	in_esc = 0
	input = sys.stdin.read()

	global matchc_last
	global matchc_status
	global matchc_root
	global matchl_status
	global matchm_status
	global matchm_root
	global matchp_status
	global matchp_root

	for char in input:
		# decrease the flag of the tab completion of commands
		if matchc_status != 0:
			matchc_status = matchc_status - 1
		# decrease the flag of the last received/last send completion
		elif matchl_status != 0:
			matchl_status = matchl_status - 1
		# decrease the flag of the m completion
		elif matchm_status != 0:
			matchm_status = matchm_status - 1
		# decrease the flag of the other arguments completion
		elif matchp_status != 0:
			matchp_status = matchp_status - 1

		if char == '\r':
			# replace \r with \n, so we handle mac keyboard input
			# properly (it breaks \r\n tho, but nobody uses it)
			char = '\n'
		inbuf = inbuf + char
		if char == '\n':
			# command history
			if len(inbuf_history[0]) > config['input history size']:
				del(inbuf_history[0][0])
			inbuf_history[0].append(inbuf[:-1])
			inbuf_history[1] = len(inbuf_history[0]) - 1 # moves the pointer

			safe_write(char)
			tmpbuf = inbuf
			inbuf = ''
			out = parse_cmd(tmpbuf)
			printl(out + '\n', c.green, 1)
			redraw_cli()

		elif char == '\b' or ord(char) == 127:		# ^H / DEL
			inbuf = inbuf[:-2]
			redraw_cli()

		elif ord(char) == 21:				# ^U
			inbuf = ''
			redraw_cli()

		elif ord(char) == 23:				# ^W
			inbuf = inbuf[:-1]
			inbuf = inbuf.rstrip()
			pos = inbuf.rfind(' ')
			if pos > 0:
				inbuf = inbuf[:pos].rstrip() + ' '
			else:
				inbuf = ''
			redraw_cli()

		elif char == '\t':				# tab
			p = inbuf.split()

			# we do a basic cycling between the last received and
			# last sent; first we build the two strings and then
			# we see which one applies according to some messy
			# logic
			# FIXME: it fails if we haven't in our contact list
			# the person with we are talking
			if email2nick(last_received):
				nick = email2nick(last_received)
				if ' ' in nick:
					nick = last_received
				mtolrecv = 'm ' + nick + ' '
			else:
				mtolrecv = None

			if email2nick(last_sent):
				nick = email2nick(last_sent)
				if ' ' in nick:
					nick = last_sent
				mtolsent = 'm ' + nick + ' '
			else:
				mtolsent = None

			# in an empty buffer we fill with the last received or
			# the last sent
			if len(p) == 0:
				if mtolsent:
					inbuf = mtolsent
					matchl_status = 2
				elif mtolrecv:
					inbuf = mtolrecv
					matchl_status = 2
				else:
					inbuf = inbuf[:-1]
					beep()

			# if in the last cycle we have replaced with
			# mtolsent or mtolrecv we try to fill ciclical
			elif mtolsent and mtolrecv and matchl_status == 1:
				if inbuf.strip() == mtolrecv.strip():
					inbuf = mtolsent
					matchl_status = 2
				else:
					inbuf = mtolrecv
					matchl_status = 2

			# temporarily if not mtolsent or mtolrecv we beep
			# FIXME it do nothing if there's only mtolrecv and
			# it changes between two tabs
			elif matchl_status == 1:
				# it avoids that in the next iteration the
				# empty buffer completion will be taked for
				# an m completion
				matchl_status = 2
				inbuf = inbuf[:-1]
				beep()

			# we have something that is neither mtolsent or
			# mtolrecv, if is the m command we try to find a
   			# matching email/nick
			elif p[0] == 'm' and len(p) == 2:
				begin = p[1]
				if matchm_status == 1:
					begin = matchm_root

				# we try to match with onlines contacts
				# and contacts with sbd
				email = matchemail(begin, 1, matchm_status)
				if not email:
					inbuf = inbuf[:-1]
					beep()
				else:
					matchm_root = begin
					matchm_status = 2
					inbuf = 'm ' + email + ' '

			# if there's an only word buffer we try to match
			# with one of the commands
			elif len(p) == 1:
				# if it's the 2nd tab we build a ciclical
				# matching; if not, we remember the last match
				if matchc_status == 1:
					p[0] = matchc_root
					matchc_last = matchc_last + 1

				found = 1
				while found or matchc_last != len(command_list):
					if matchc_last == len(command_list):
						matchc_last = 0
						found = 0
						continue
					elif command_list[matchc_last].find(p[0]) == 0:
						matchc_status = 2
						matchc_root = p[0]
						break
					matchc_last = matchc_last + 1
				if matchc_last == len(command_list):
					inbuf = inbuf[:-1]
					beep()
				else:
					inbuf = command_list[matchc_last] + ' '

			else:
				pn = p[len(p) - 1]
				if matchp_status == 1:
					pn = matchp_root

				# we try to match with all of contacts
				email = matchemail(pn, 0, matchp_status)
				if not email:
					inbuf = inbuf[:-1]
					beep()
				else:
					matchp_root = pn
					matchp_status = 2
					inbuf = inbuf.rstrip()
					pos = inbuf.rfind(' ')
					inbuf = inbuf[:pos] + ' ' + email + ' '

			redraw_cli()

		elif ord(char) == 4:				# EOT
			safe_write('\n')
			out = parse_cmd('')
			printl(out + '\n', c.green, 1)

		elif ord(char) == 27:				# ESC
			# we use in_esc for escape secuenses (composed of
			# ESC + '[' + LETTER). 1 means got ESC, 2 means got
			# '['. Here we set to 1, and the rest are in the
			# generic handling
			in_esc = 1
			inbuf = inbuf[:-1]

		elif ord(char) < 32:				# unhandled control
			msnlib.debug('Got weird char: %d' % ord(char))
			redraw_cli_cond(char)

		else:						# normal
			if not in_esc:
				# Never allow lines longer than 1500, since
				# that's the max for a single message.
				# Actually this calculates based on the whole
				# buffer and not on just the message, but the
				# code is nicer and 16 bytes won't make a
				# difference.
				if len(inbuf) > 1500:
					inbuf = inbuf[:1500]
					beep()
					redraw_cli()
				else:
					redraw_cli_cond(char)
				continue

			# comes from a escape code
			elif in_esc == 1:
				if char == '[':
					in_esc = 2
				else:
					in_esc = 0
				inbuf = inbuf[:-1]
			elif in_esc == 2:
				if char == 'A':			# up
					if inbuf_history[1] == -1:
						# hit the top, or it's empty;
						# remove it from the buffer
						inbuf = inbuf[:-1]
					else:
						clear_line()
						pos = inbuf_history[1]
						inbuf = inbuf_history[0][pos]
						inbuf_history[1] -= 1
						redraw_cli()
				elif char == 'B':		# down
					if not inbuf_history[0]:
						# it's empty, so we only
						# remove it from the buffer
						inbuf = inbuf[:-1]
					elif inbuf_history[1] == len(inbuf_history[0]) - 1:
						# hit the bottom, clear the buffer
						clear_line()
						inbuf = ''
						redraw_cli()
					else:
						inbuf_history[1] += 1
						clear_line()
						pos = inbuf_history[1]
						inbuf = inbuf_history[0][pos]
						redraw_cli()
				else:				# unhandled esc
					inbuf = inbuf[:-1]
				in_esc = 0

def redraw_cli():
	"""Redraws the current prompt line, including user input; it first
	clears the line, either automatically or up to 'lenght' chars."""
	global inbuf, screenwidth
	clear_line()
	print_prompt()
	lenght = screenwidth - 7	# we subsctract the prompt lenght + 1
	safe_write(inbuf[-lenght:])
	safe_flush()

def redraw_cli_cond(char):
	"""Same as redraw_cli, but conditional over the lenght of stdin. That
	means that if inbuf is getting too big, we redraw; otherwise we just
	write the character. It's used mostly to avoid innecesary redraw
	overhead (it avoids 90% of cases)."""
	global inbuf, screenwidth
	if len(inbuf) >= (screenwidth - 7):
		redraw_cli()
	else:
		safe_write(char)
		safe_flush()

def clear_line():
	"""Clears the current line by overwriting it with spaces."""
	global inbuf, screenwidth
	if use_termios:
		safe_write('\r' + (screenwidth - 1) * ' ' + '\r')


#
# stdin command parser
#

def parse_cmd(cmd):
	"""Parses the commands introduced by the user. It's pretty long and
	boring, as expected."""

	global c, last_sent, last_received	# ugly but necesary

	if len(cmd) == 0:
		quit()
	elif len(cmd) == 1:
		return ''

	# cut trailing newline and clean up
	if cmd[-1] == '\n':
		cmd = cmd[:-1]
	cmd = cmd.lstrip()
	orig_cmd = cmd
	s = cmd.split()
	if len(s) > 1:
		cmd = s[0]
		# recover original params to preserve whitespace
		# use as index the first parameter to the command
		params = orig_cmd[orig_cmd.find(s[1]):]
	else:
		if not cmd: return ''
		cmd = s[0]
		params = ''


	# parse
	if   cmd == 'status': 		# change status
		if not params:
			return 'Your current status is %s' % msnlib.reverse_status[m.status]
		if not m.change_status(params):
			out = 'Status must be one of:\n'
			out += '\tonline, away, busy, brb, phone, lunch, invisible or idle'
			return out
		return 'Status changed to: %s' % params

	elif cmd == 'q':		# quit
		quit()

	elif cmd == 'reload':		# reload callbacks
		reload(msncb)
		m.cb = msncb.cb()

	elif cmd == 'w':		# list
		print_grouped_list(m)

	elif cmd == 'ww':		# list, include emails
		print_grouped_list(m, include_emails = 1)

	elif cmd == 'wr':		# reverse list
		print_list(m, userlist = m.reverse, include_emails = 1)

	elif cmd == 'wd':		# difference list
		print_diff(m)

	elif cmd == 'e':		# list (online only)
		print_list(m, only_online = 1)

	elif cmd == 'eg':
		print_grouped_list(m, only_online = 1)

	elif cmd == 'ee':
		print_grouped_list(m, only_online = 1, include_emails = 1)

	elif cmd == 'g':		# list groups
		print_group_list(m)

	elif cmd == 'raw':		# send a raw message
		try:
			cmd = params[0:3]
			pars = params[4:]
		except:
			return 'Error parsing command'
		m._send(cmd, pars)

	elif cmd == 'debug':		# enable/disable debugging
		p = params.split()
		if len(p) != 1:
			return 'Error parsing command'
		if p[0] == 'off':
			msnlib.debug = null
			msncb.debug = null
			return 'Debugging disabled'
		elif p[0] == 'on':
			reload(msnlib)
			reload(msncb)
			return 'Debugging enabled'
		else:
			return 'Unknown parameter - must be "on" or "off"'

	elif cmd == 'config':		# show config variables
		keys = config.keys()
		keys.sort()
		for var in keys:
			value = str(config[var])
			if var == 'password':
				value = '<not displayed>'
			printl(c.bold + var + ' = ' + c.normal + value + '\n')
		printl(c.bold + 'use_termios = ' + str(use_termios) + '\n')
		printl(c.bold + 'screensize = ' + str(winsize) + '\n')

	elif cmd == 'color':		# configure/show colors
		p = params.split()
		if len(p) != 1:
			printl(c.bold + "Currently using theme " + c.name + '\n')
			printl(c.bold + "Available themes:\n")
			for i in color_classes.keys():
				printl(c.bold + "\t* " + i + '\n')
		elif p[0] not in color_classes.keys():
			return "The specified theme is not available"
		else:
			c = color_classes[p[0]]()
			return "Changed theme to " + p[0]

	elif cmd == 'close':		# close a connection
		p = params.split()
		if len(p) != 1:
			return 'Error parsing command'
		email = nick2email(p[0])
		if not email:
			return 'Unknown nick (%s)' % p[0]
		if not m.users[email].sbd:
			return 'No socket opened for %s' % p[0]
		desc = str(m.users[email].sbd)
		m.close(m.users[email].sbd)
		return 'Closed socket %s' % desc

	elif cmd == 'privacy':		# set privacy mode
		p = params.split()
		if len(p) != 2:
			return 'Error parsing command'
		try:
			public = int(p[0])
			auth = int(p[1])
			if public not in (0, 1) or auth not in (0, 1):
				return 'Error: both parameters must be 1 or 0'
		except:
			return 'Error: both parameters must be 1 or 0'
		m.privacy(public, auth)

	elif cmd == 'lignore':		# ignore a user locally
		p = params.split()
		if len(p) == 0:
			printl(c.bold + 'Locally ignored users\n')
			for e in ignored:
				printl(email2nick(e) + ' (' + e + ')\n')
			return ''
		email = nick2email(p[0])
		if not email:
			return 'Unknown nick (%s)' % p[0]
		if email in ignored:
			return 'User is already being locally ignored'
		ignored.append(email)
		return 'User is now being locally ignored'

	elif cmd == 'lunignore':	# unignore a locally ignored user
		p = params.split()
		if len(p) == 0:
			return 'Error parsing command'
		email = nick2email(p[0])
		if email not in ignored:
			return 'User is not being locally ignored'
		ignored.remove(email)
		return 'User is no longer locally ignored'

	elif cmd == 'block':
		p = params.split()
		if len(p) == 0:
			return 'Error parsing command'
		email = nick2email(p[0])
		if not email:
			return 'Unknown nick (%s)' % p[0]
		m.userblock(email)
		return 'User %s blocked' % email

	elif cmd == 'unblock':
		p = params.split()
		if len(p) == 0:
			return 'Error parsing command'
		email = nick2email(p[0])
		if not email:
			return 'Unknown nick (%s)' % p[0]
		m.userunblock(email)
		return 'User %s unblocked' % email

	elif cmd == 'add':		# add a user
		p = params.split()
		if   len(p) == 0:
			return 'Error parsing command'
		elif len(p) == 1:
			email = nick = p[0]
			gid = '0'
		elif len(p) == 2:
			email = p[0]
			nick = p[1]
			gid = '0'
		else:
			email = p[0]
			nick = p[1]
			group = p[2]
			gid = gname2gid(group)
			if not gid: gid = group
			if gid not in m.groups.keys():
				return 'Unknown group'
		m.useradd(email, nick, gid)

	elif cmd == 'del':		# delete a user
		p = params.split()
		if len(p) != 1: return 'Error parsing command'
		email = nick2email(p[0])
		if not email:
			return 'Unknown nick (%s)' % p[0]
		m.userdel(email)

	elif cmd == 'ren':		# rename a user
		p = params.split(None, 1)
		if len(p) < 2: return 'Error parsing command'
		email = nick2email(p[0])
		if not email:
			return 'Unkown nick (%s)' % p[0]
		newnick = p[1].strip()
		u = m.users[email]
		m.userren(email, newnick)

	elif cmd == 'gadd':		# add a group
		p = params.split()
		if len(p) != 1: return 'Error parsing command'
		m.groupadd(p[0])

	elif cmd == 'gdel':		# delete a group
		p = params.split()
		if len(p) != 1: return 'Error parsing command'
		gname = p[0]
		gid = gname2gid(gname)
		if not gid: gid = gname
		if gid not in m.groups.keys():
			return 'Unknown group'
		for e in m.users.keys():
			u = m.users[e]
			if u.gid == gid:
				printl('User %s (%s) will be deleted\n' % \
					(u.nick, e), bold = 1)
		m.groupdel(gid)

	elif cmd == 'gren':		# rename a group
		p = params.split()
		if len(p) != 2: return 'Error parsing command'
		newname = p[1]
		origname = p[0]
		gid = gname2gid(origname)
		if not gid: gid = origname
		if gid not in m.groups.keys():
			return 'Unknown group'
		m.groupren(gid, newname)

	elif cmd == 'invite':		# invite a user to an existing sbd
		p = params.split()
		if len(p) != 3: return 'Error parsing command'
		if p[1] != 'to': return 'Error parsing command'
		email = nick2email(p[0])
		if not email: email = p[0]
		dst = nick2email(p[2])
		if not dst: dst = p[2]
		for i in (email, dst):
			if i not in m.users.keys():
				return 'User %s unknown' % i
		dst_sbd = m.users[dst].sbd
		if not dst_sbd:
			return 'No current chat with user %s' % dst
		m.invite(email, dst_sbd)

	elif cmd == 'nick':		# change our nick
		if len(params) < 1: return 'Error parsing command'
		nick = params
		m.change_nick(nick)

	elif cmd == 'info':		# user info
		p = params.split()
		if len(p) != 1:
			out = ''
			out += c.bold + 'Info for ' + m.email + '\n'
			out += c.bold + 'Nick:\t\t' + c.normal + m.nick + '\n'
			out += c.bold + 'Status:\t\t' \
				+ c.normal + msnlib.reverse_status[m.status] + '\n'
			out += c.bold + 'Home phone:\t' + c.normal + str(m.homep) + '\n'
			out += c.bold + 'Work phone:\t' + c.normal + str(m.workp) + '\n'
			out += c.bold + 'Mobile phone:\t' + c.normal + str(m.mobilep) + '\n'
			out += c.bold + 'Users in contact list: ' + str(len(m.users)) + '\n'
			out += c.bold + 'Users in reverse list: ' + str(len(m.reverse)) + '\n'
			out += c.bold + 'Notification server: ' + c.normal + str(m) + '\n'
			if m.sb_fds:
				out += c.bold + 'Switchboard connections:\n'
				for i in m.sb_fds:
					out += c.bold + '\tSB: ' + c.normal + str(i) + '\n'
			printl(out)
		else:
			email = nick2email(p[0])
			if not email:
				return 'Unknown nick (%s)' % str(p[0])
			print_user_info(email)

	elif cmd == 'sync':		# manual sync
		m.sync()

	elif cmd == 'h':		# show history
		printl('Incoming Message History (last %d messages)\n' \
			% config['history size'], c.green, 1)
		for i in history_ring:
			rtime = i[0]
			email = i[1]
			msg = i[2]
			print_inc_msg(email, msg, quiet = 1, ptime = 1, recvtime = rtime)

	# send a message
	elif cmd == 'm' or cmd == 'msg' or cmd == 'r' or cmd == 'a':
		if cmd == 'm' or cmd == 'msg':
			p = params.split()
			if len(p) < 1:
				return 'Please enter a nick and a message'
			nick = p[0]
			email = nick2email(nick)
			# begin the message content after the nick
			begin = len(nick + ' ')
			msg = params[begin:]
		elif cmd == 'r':
			email = last_received
			nick = email2nick(email)
			if not nick: nick = email
			msg = params
		elif cmd == 'a':
			email = last_sent
			nick = email2nick(email)
			if not nick: nick = email
			msg = params
		if not email:
			if cmd == 'a': return 'Please write a message first'
			if cmd == 'r': return 'Please reply a message first'
			else: return 'Unknown nick %s' % str(p[0])
		if m.users[email].status == 'FLN' and not m.users[email].sbd:
			return 'Unable to send message: User is offline'
		if (m.status == 'FLN' or m.status == 'HDN') and not m.users[email].sbd:
			return 'Unable to send message: Not allowed when offline'

		r = m.sendmsg(email, msg)
		last_sent = email
		if r == 1:
			return 'Message for %s queued for delivery' % nick
		elif r == 2:
			print_out_msg(nick, msg)
			if len(m.users[email].sbd.emails) > 1:
				log_msg(m.email, 'out', msg, \
					users = m.users[email].sbd.emails)
			else:
				log_msg(email, 'out', msg)
		elif r == -2:
			return 'Message too big'
		else:
			return 'Error %d sending message' % r

	elif cmd == 'help' or cmd == '?':
		return help
	else:
		return 'Unknown command, type "help" for help'

	return ''



#
# This are the callback replacements, which only handle the output and then
# call the original callbacks to do the lower level stuff
#

# basic classes
m = msnlib.msnd()
m.cb = msncb.cb()

# status change
def cb_iln(md, type, tid, params):
	t = params.split(' ')
	status = msnlib.reverse_status[t[0]]
	email = t[1]
	rnick = urllib.unquote(t[2])
	nick = md.users[email].nick
	ctime = time.strftime('%I:%M:%S%p', now())

	printl('\r%s ' % ctime, c.blue)
	printl(nick, c.blue, 1)
	printl(' is ', c.magenta)
	printl('%s' % status, c.magenta, 1)
	log_msg(email, 'status', status)
	if config["show realnick changes"]:
		printl(' with realnick ', c.magenta)
		printl('%s' % rnick, c.magenta, 1)
		log_msg(email, 'realnick', rnick)
	printl('\n')

	msncb.cb_iln(md, type, tid, params)
m.cb.iln = cb_iln

def cb_nln(md, type, tid, params):
	status = msnlib.reverse_status[tid]
	t = params.split(' ')
	email = t[0]
	if len(params) > 1:
		rnick = urllib.unquote(t[1])
	else:
		rnick = ''

	nick = md.users[email].nick
	realnick = md.users[email].realnick
	ctime = time.strftime('%I:%M:%S%p', now())

	if tid != md.users[email].status:
		printl('\r%s ' % ctime, c.blue)
		printl(nick, c.blue, 1)
		printl(' changed status to ', c.magenta)
		printl('%s' % status, c.magenta, 1)
		log_msg(email, 'status', status)
		# if we don't know the realnick yet, include it in the same line
		if not realnick and config["show realnick changes"]:
			printl(' with realnick ', c.magenta)
			printl('%s' % rnick, c.magenta, 1)
			log_msg(email, 'realnick', rnick)
		printl("\n")

	if realnick and rnick and realnick != rnick \
			and config["show realnick changes"]:
		printl("\r%s " % ctime, c.blue)
		printl(nick, c.blue, 1)
		printl(' changed the realnick to ', c.magenta)
		printl('%s\n' % rnick, c.magenta, 1)
		log_msg(email, 'realnick', rnick)

	msncb.cb_nln(md, type, tid, params)
m.cb.nln = cb_nln

def cb_fln(md, type, tid, params):
	email = tid
	nick = md.users[email].nick
	ctime = time.strftime('%I:%M:%S%p', now())
	printl('\r%s ' % ctime, c.blue)
	printl(nick, c.blue, 1)
	printl(' disconnected\n', c.magenta)
	u = m.users[email]
	if u.sbd and u.sbd.msgqueue:
		printl(c.bold + "The following messages for " + nick + " will be discarded:\n")
		for msg in u.sbd.msgqueue:
			printl(c.bold + '\t>>> ' + c.normal + msg + '\n')
	log_msg(email, 'status', 'disconnect')
	msncb.cb_fln(md, type, tid, params)
m.cb.fln = cb_fln

# server disconnect
def cb_out(md, type, tid, params):
	printl('\rServer sent disconnect (probably you logged in somewhere else)\n', c.green, 1)
	msncb.cb_out(md, type, tid, params)
m.cb.out = cb_out

def cb_bye(md, type, tid, params, sbd):
	email = tid
	if email != sbd.emails[0]:
		nick = email2nick(email)
		if not nick: nick = email
		first_nick = email2nick(sbd.emails[0])
		if not first_nick: first_nick = sbd.emails[0]
		printl('\rUser %s left the chat with %s\n' % (nick, first_nick), c.green, 1)
		log_msg(email, 'multi', 'left', users = sbd.emails)
	msncb.cb_bye(md, type, tid, params, sbd)
m.cb.bye = cb_bye


# message
def cb_msg(md, type, tid, params, sbd):
	global last_received
	t = tid.split(' ')
	email = t[0]

	# parse
	lines = params.split('\n')
	headers = {}
	eoh = 0
	for i in lines:
		# end of headers
		if i == '\r':
			break
		tv = i.split(':', 1)
		type = tv[0]
		value = tv[1].strip()
		headers[type] = value
		eoh += 1
	eoh +=1

	# handle special hotmail messages
	if email == 'Hotmail':
		if not headers.has_key('Content-Type'):
			return
		hotmail_info = {}

		# parse the body
		for i in lines:
			i = i.strip()
			if not i:
				continue
			tv = i.split(':', 1)
			type = tv[0]
			value = tv[1].strip()
			hotmail_info[type] = value

		msnlib.debug(params)
		if headers['Content-Type'] == 'text/x-msmsgsinitialemailnotification; charset=UTF-8':
			newmsgs = int(hotmail_info['Inbox-Unread'])
			if not newmsgs:
				return
			printl('\rYou have %s unread email(s)' % str(newmsgs) \
				+ ' in your Hotmail account\n', c.green, 1)
		elif headers['Content-Type'] == 'text/x-msmsgsemailnotification; charset=UTF-8':
			from_name = hotmail_info['From']
			from_addr = hotmail_info['From-Addr']
			subject = hotmail_info['Subject']
			printl('\rYou have just received an email in your' + \
				' Hotmail account:\n', c.green, 1)
			printl('\r\tFrom: %s (%s)\n' % (from_name, from_addr),
				c.green, 1)
			printl('\r\tSubject: %s\n' % subject, c.green, 1)
		return

	if headers.has_key('Content-Type') and headers['Content-Type'] == 'text/x-msmsgscontrol':
		# the typing notices
		nick = email2nick(email)
		if not nick: nick = email
		if not m.users[email].priv.has_key('typing'):
			m.users[email].priv['typing'] = 0
		if not m.users[email].priv['typing'] and email not in ignored:
			printl('\r')
			ctime = time.strftime('%I:%M:%S%p', now())
			printl('%s ' % ctime, c.blue)
			printl('%s' % nick, c.cyan, 1)
			printl(' is typing\n', c.magenta)
		m.users[email].priv['typing'] = time.time()
	elif headers.has_key('Content-Type') and headers['Content-Type'] == 'text/x-clientcaps':
		# ignore the x-clientcaps messages generated from gaim
		pass
	else:
		# messages
		m.users[email].priv['typing'] = 0
		printl('\r')
		print_inc_msg(email, lines, eoh)
		if len(sbd.emails) > 1:
			log_msg(email, 'in', string.join(lines[eoh:], '\n'), \
				users = sbd.emails)
		else:
			log_msg(email, 'in', string.join(lines[eoh:], '\n'))

		# append the message to the history, keeping it below the configured limit
		if len(history_ring) > config['history size']:
			del(history_ring[0])
		history_ring.append((time.time(), email, lines[eoh:]))

	last_received = email
	msncb.cb_msg(md, type, tid, params, sbd)
m.cb.msg = cb_msg


# join a conversation and send pending messages
def cb_joi(md, type, tid, params, sbd):
	email = tid
	nick = email2nick(email)
	if not nick: nick = email
	if sbd.emails and email != sbd.emails[0]:
		first_nick = email2nick(sbd.emails[0])
		if not first_nick: first_nick = sbd.emails[0]
		printl('\rUser %s has joined the chat with %s\n' % \
			(nick, first_nick), c.green, 1)
		log_msg(email, 'multi', 'join', \
			users = sbd.emails + [email])
	elif len(sbd.msgqueue) > 0:
		printl('\rFlushing messages for %s:\n' % nick, c.green, 1)
		for msg in sbd.msgqueue:
			print_out_msg(nick, msg)
			printl('\n')
			log_msg(email, 'out', msg)
	msncb.cb_joi(md, type, tid, params, sbd)
m.cb.joi = cb_joi

def cb_iro(md, type, tid, params, sbd):
	p = params.split(' ')
	uid, ucount, email, realnick = p
	nick = email2nick(email)
	if not nick: nick = email

	if ucount == '1':
		# do nothing if we only have one participant
		pass
	else:
		first_nick = email2nick(sbd.emails[0])
		if not first_nick: first_nick = sbd.emails[0]
		# print a special message for the first user
		if uid == '1':
			printl('\rUser %s has invited us to a multi-user chat\n' % \
				first_nick, c.green, 1)
		else:
			printl('\rUser %s has joined the chat with %s\n' % \
				(nick, first_nick), c.green, 1)
			log_msg(email, 'multi', 'join', \
				users = sbd.emails + [email])
	msncb.cb_iro(md, type, tid, params, sbd)
m.cb.iro = cb_iro

# server errors
def cb_err(md, errno, params):
	if not msncb.error_table.has_key(errno):
		desc = 'Unknown'
	else:
		desc = msncb.error_table[errno]
	desc = '\rServer sent error %d: %s\n' % (errno, desc)
	perror(desc)
	msncb.cb_err(md, errno, params)
m.cb.err = cb_err

# users add, delete and modify
def cb_add(md, type, tid, params):
	t = params.split(' ')
	type = t[0]
	if type == 'RL' or type == 'FL':
		email = t[2]
		nick = urllib.unquote(t[3])
	if type == 'RL':
		out = '\r' + c.blue + c.bold + ('%s (%s) ' % (email, nick)) \
			+ c.magenta + 'has added you to his contact list\n'
		printl(out)
		beep()
	elif type == 'FL':
		out = '\r' + c.blue + c.bold + ('%s (%s) ' % (email, nick)) \
			+ c.magenta + 'has been added to your contact list\n'
		printl(out)
	msncb.cb_add(md, type, tid, params)
m.cb.add = cb_add

def cb_rem(md, type, tid, params):
	t = params.split(' ')
	type = t[0]
	if type == 'RL' or type == 'FL':
		email = t[2]
	if type == 'RL':
		out = '\r' + c.blue + c.bold + email + ' ' + c.magenta \
			+ 'has removed you from his contact list\n'
		printl(out)
		beep()
	elif type == 'FL':
		out = '\r' + c.blue + c.bold + email + ' ' + c.magenta \
			+ 'has been removed from your contact list\n'
		printl(out)
	msncb.cb_rem(md, type, tid, params)
m.cb.rem = cb_rem

def cb_rea(md, type, tid, params):
	t = params.split(' ')
	email = t[1]
	nick = urllib.unquote(t[2])
	if email != md.email:
		out = '\r' + c.blue + c.bold + email + ' ' + c.magenta \
			+ 'has been renamed to ' + c.bold + nick + '\n'
		printl(out)
	else:
		out = '\r' + c.magenta + 'Your nick has been changed to ' \
			+ c.bold + nick + '\n'
		printl(out)
	msncb.cb_rea(md, type, tid, params)
m.cb.rea = cb_rea

def cb_adg(md, type, tid, params):
	t = params.split(' ')
	lver, name, gid = t[0:3]
	name = urllib.unquote(name)
	out = '\r' + c.magenta + 'Group '
	out += c.blue + c.bold + '%s (%s)' % (name, gid) + c.clear
	out += c.magenta + ' has been added\n'
	printl(out)
	msncb.cb_adg(md, type, tid, params)
m.cb.adg = cb_adg

def cb_rmg(md, type, tid, params):
        t = params.split(' ')
        lver, gid = t[0:2]
	name = md.groups[gid]
	out = '\r' + c.magenta + 'Group '
	out += c.blue + c.bold + '%s (%s)' % (name, gid) + c.clear
	out += c.magenta + ' has been removed\n'
	printl(out)
	msncb.cb_rmg(md, type, tid, params)
m.cb.rmg = cb_rmg

def cb_reg(md, type, tid, params):
	t = params.split(' ')
	gid = t[1]
	origname = md.groups[gid]
	origname = urllib.unquote(origname)
	newname = t[2]
	newname = urllib.unquote(newname)
	out = '\r' + c.magenta + 'Group '
	out += c.blue + c.bold + '%s (%s)' % (origname, gid) + c.clear
	out += c.magenta + ' has been renamed to '
	out += c.blue + c.bold + '%s' % newname + '\n'
	printl(out)
	msncb.cb_reg(md, type, tid, params)
m.cb.reg = cb_reg



#
# now the real thing
#
printl('* MSN Client (3.5) *\n', c.yellow, 1)

# first, the configuration
printl('Loading config... ', c.green, 1)
if len(sys.argv) > 1:
	# first, try the arg as file
	config = get_config(sys.argv[1])
	profile = None
	if not config:
		# then, as the profile
		profile = sys.argv[1]
		file = os.environ['HOME'] + '/.msn/msnrc-' + profile
		config = get_config(file)
else:
	profile = None
	config = get_config(os.environ['HOME'] + '/.msn/msnrc')

if not config:
	perror('Error opening config file (%s), try running "msnsetup"\n' % file)
	quit(1)

config['profile'] = profile

# set the mandatory values
if config.has_key('email'):
	m.email = config['email']
else:
	perror('Error: email not specified in config file\n')
	quit(1)

if config.has_key('password'):
	m.pwd = config['password']
else:
	# we ask for the password, setting, if necesary, blocking IO over
	# stdin (which was disabled by the terminal handling stuff)
	import getpass
	try: fcntl.fcntl(stdinfd, fcntl.F_SETFL, os.O_SYNC)
	except: pass
	m.pwd = getpass.getpass(c.green + c.bold + "\nPassword: ")
	try: fcntl.fcntl(stdinfd, fcntl.F_SETFL, os.O_NONBLOCK)
	except: pass

# and the optional ones, setting the defaults if not present
# history size
if not config.has_key('history size'):
	config['history size'] = 10
else:
	try:
		config['history size'] = int(config['history size'])
	except:
		perror('history size must be integer, using default\n')
		config['history size'] = 10

# input history size
if not config.has_key('input history size'):
	config['input history size'] = 10
else:
	try:
		config['history size'] = int(config['history size'])
	except:
		error('input history size must be integer, using default\n')
		config['input history size'] = 10

# initial status
if not config.has_key('initial status'):
	config['initial status'] = 'online'
elif config['initial status'] not in msnlib.status_table.keys():
	perror('unknown initial status, using default\n')
	config['initial status'] = 'online'

# debug
if not config.has_key('debug'):
	config['debug'] = 0
elif config['debug'] != 'yes':
	config['debug'] = 0

# colors
if not config.has_key('color theme'):
	config['color theme'] = 'default'
try:
	c = color_classes[config['color theme']]()
except:
	perror("Unknown color theme, type 'color' for help\n")

# log history
if not config.has_key('log history'):
	config['log history'] = 1
elif config['log history'] != 'yes':
	config['log history'] = 0

# history directory
if not config.has_key('history directory'):
	config['history directory'] = os.environ['HOME'] + '/.msn/history'

# show realnick changes
if not config.has_key('show realnick changes'):
	config['show realnick changes'] = 0
elif config['show realnick changes'] != 'yes':
	config['show realnick changes'] = 0

# auto away time
if not config.has_key('auto away'):
	config['auto away'] = 0
else:
	try:
		config['auto away'] = int(config['auto away'])
	except:
		perror('auto away must be integer, using default\n')
		config['auto away'] = 0
if config['auto away'] and config['auto away'] < 60:	# sanity check
	perror('Warning: auto away time was set to less than a minute!\n')

# encoding
if not config.has_key('encoding'):
	# we use posix standard way of defining standard locale, or just fall
	# back to iso-8859-1; see locale(7) for more details
	if os.environ.has_key('LC_ALL') and os.environ['LC_ALL']:
		config['encoding'] = os.environ['LC_ALL']
	elif os.environ.has_key('LANG') and os.environ['LANG']:
		config['encoding'] = os.environ['LANG']
	else:
		config['encoding'] = 'iso-8859-1'
m.encoding = config['encoding']

printl('done\n', c.green, 1)


# set or void the debug
if not config['debug']:
	msnlib.debug = null
	msncb.debug = null

# debug some internal variables
msnlib.debug("Terminal Handling: %d" % use_termios)
msnlib.debug("Terminal Size: %s" % str(winsize))

# login to msn
printl('Logging in... ', c.green, 1)
try:
	m.login()
	printl('done\n', c.green, 1)
except 'AuthError', info:
	errno = int(info[0])
	if not msncb.error_table.has_key(errno):
		desc = 'Unknown'
	else:
		desc = msncb.error_table[errno]
	perror('Error: %s (%s)\n' % (desc, errno))
	quit(1)
except KeyboardInterrupt:
	quit()
except ('SocketError', socket.error), info:
	perror('Network error: ' + str(info) + '\n')
	quit(1)
except:
	pexc('Exception logging in\n')
	quit(1)


# call sync to get the lists and refresh
printl('Sending user list request... ', c.green, 1)
if m.sync():
	printl('done\n', c.green, 1)
	list_complete = 0
else:
	perror('Error syncing users\n')


# global variables
history_ring = []	# history buffer
last_sent = ''		# email of the last person we sent a message to
last_received = ''	# email of the last person we received a message from
ignored = []		# people being locally ignored

# auto-away
timeout = config['auto away']
if not timeout:
	timeout = None		# must be None, not 0 because of select() semantics
auto_away = 0

# loop
redraw_cli()
while 1:
	fds = m.pollable()
	infd = fds[0]
	outfd = fds[1]
	infd.append(sys.stdin)
	try:
		fds = select.select(infd, outfd, [], timeout)
	except KeyboardInterrupt:
		quit()

	if timeout and len(fds[0] + fds[1]) == 0:
		# timeout, set auto away
		if m.status == 'NLN':
			m.change_status('away')
			auto_away = 1
			printl('\rAutomatically changing status to away\n', c.green, 1)

	for i in fds[0] + fds[1]:		# see msnlib.msnd.pollable.__doc__
		if i == sys.stdin:
			# auto away revival
			if auto_away:
				auto_away = 0
				m.change_status('online')
				printl('\rAutomatically changing status back to online\n', c.green, 1)
			# read from stdin
			stdin_read()
		else:
			try:
				m.read(i)

				# see if we got all the user list, so we can
				# change our initial status (doing it earlier
				# as we used to seems to break things for some
				# people)
				if not list_complete and \
						m.lst_total == m.syn_total:
					list_complete = 1
					if m.change_status(config['initial status']):
						printl('\rStatus set to %s\n' % config['initial status'], c.green, 1)
					else:
						perror('\rError setting status: unknown status %s\n' % config['initial status'])



			except ('SocketError', socket.error), err:
				if i != m:
					if i.msgqueue:
						nick = email2nick(i.emails[0])
						printl("\rConnection with %s closed - the following messages couldn't be sent:\n" % (nick), c.green, 1)
						for msg in i.msgqueue:
							printl(c.bold + '\t>>> ' + c.normal + msg + '\n')
					m.close(i)
				else:
					printl('\nMain socket closed (%s)\n' % str(err), c.red)
					quit(1)
			except 'XFRError', err:
				printl("\rXFR Error: %s\n" % str(err))

			# always redraw after network event
			redraw_cli()