""" Module modem.py pour PyPhone
 Copyright (C) 1998 Luc Stepniewski

 This program 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 2 of the License, or
 (at your option) any later version.

 This program 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 this program; if not, write to the Free Software
 Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.

 Ce programme permet de composer des numeros de telephone
 sur un MODEM Voice (testé sur 'USR 56K Pro Message Modem')
"""
import os,sys,time,string,re
import fcntl, FCNTL

import tty
import termios, TERMIOS

class Modem:
    def __init__(self, device):
        self.VBT = 10
        self.talking = 0
        
        if device[0:5] == '/dev/':
            self.device = device
        else:
            self.device = '/dev/' + device

#    def __del__(self):
#        self.hangup()
#        time.sleep(2)
#        os.close(self.f)
#        print 'fin ok'

    def print_device(self):
        print self.device

    def init_device(self):
        try:
            self.f = os.open(self.device, FCNTL.O_RDWR|FCNTL.O_NOCTTY)
        except IOError:
            print "Erreur ŕ l'ouverture de %s\n" % self.device
            sys.exit(1)

        new = termios.tcgetattr(self.f)
        new[tty.CFLAG] = TERMIOS.B38400|TERMIOS.CRTSCTS|TERMIOS.CS8|TERMIOS.CLOCAL|TERMIOS.CREAD
        new[tty.IFLAG] = TERMIOS.IGNPAR
        new[tty.OFLAG] = 0
        new[tty.LFLAG] = 0
        new[tty.CC][TERMIOS.VMIN] = 1
        new[tty.CC][TERMIOS.VTIME] = 0
        termios.tcsetattr(self.f, TERMIOS.TCSADRAIN, new)

        #tty.setraw(self.f)

        return 1

    def get_result(self, str=None):
        str = str or 'OK'
        time.sleep(2)
        try:
            t_raw = os.read(self.f, 255)
            t_raw = string.split(string.strip(t_raw),'\n\|\r\|\r\n')
            print t_raw
            result = string.split(t_raw[0], '\n')[1]
        except IndexError:
            print "Erreur d'index !"
            self.hangup()
            time.sleep(1)
            sys.exit(1)
            
        if result == str:
            return 1
        else:
            return 0

    def dial(self,str_number):
        self.reset()
        self.set_voicemode()
        self.set_VBT(1)
        os.write(self.f,'ATDT%s;\r' % str_number)
        # IMPORTANT ! Le 'OK' arrive avec un retard
        time.sleep(3)

        if self.get_result():
            self.set_vls()
            self.talking = 1
        else:
            print 'Pas de retour OK ?!'

    def off_hook(self):
        self.set_voicemode()
        self.set_vls()

    def set_VBT(self, nb):
        os.write(self.f,"AT#VBT=%d\r" % nb)
        if not self.get_result():
            print 'Pas de retour OK ?!'
        
        self.VBT = nb

    def hangup(self):
        os.write(self.f,'ATH0\r')
        if not self.get_result():
            print 'Pas de retour OK ?!'
        
        self.talking = 0

    def set_voicemode(self):
        os.write(self.f,'AT#CLS=8;\r')
        if not self.get_result():
            print 'Pas de retour OK ?!'
        
    def dtmfpulse(self, dialable):
        if self.talking:
            os.write(self.f,'AT#VTS={%s,%d}\r' % (dialable,self.VBT))

        return self.get_result()

    def set_vls(self):
        time.sleep(2)
        
        os.write(self.f,'AT#VLS=6A\r')
        if not self.get_result('VCON'):
            print 'Pas de retour VCON ?!'

    def reset(self):
        os.write(self.f,'ATZ\r')
        if not self.get_result():
            print 'Pas de retour OK ?!'

def essai():
    m = Modem('ttyS1')
    m.init_device()
    time.sleep(1)
    m.dial('0169964797')

    while 1:
        time.sleep(1)

if __name__ == '__main__':
    essai()