src/functions/functions.serial

   1 #!/bin/bash
   2 ###############################################################################
   3 #                                                                             #
   4 # IPFire.org - A linux based firewall                                         #
   5 # Copyright (C) 2012  IPFire Network Development Team                         #
   6 #                                                                             #
   7 # This program is free software: you can redistribute it and/or modify        #
   8 # it under the terms of the GNU General Public License as published by        #
   9 # the Free Software Foundation, either version 3 of the License, or           #
  10 # (at your option) any later version.                                         #
  11 #                                                                             #
  12 # This program is distributed in the hope that it will be useful,             #
  13 # but WITHOUT ANY WARRANTY; without even the implied warranty of              #
  14 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the               #
  15 # GNU General Public License for more details.                                #
  16 #                                                                             #
  17 # You should have received a copy of the GNU General Public License           #
  18 # along with this program.  If not, see <http://www.gnu.org/licenses/>.       #
  19 #                                                                             #
  20 ###############################################################################
  21
  22 # This is a list of baudrates that are supported.
  23 SERIAL_BAUDRATES="921600 460800 230400 115200 57600 38400 19200 9600"
  24
  25 serial_list() {
  26         local device
  27         for device in /dev/ttyUSB*; do
  28                 if serial_exists "${device}"; then
  29                         echo "${device}"
  30                 fi
  31         done
  32 }
  33
  34 serial_exists() {
  35         local device=${1}
  36
  37         [ -c "${device}" ]
  38 }
  39
  40 serial_is_locked() {
  41         local device=${1}
  42         assert isset device
  43
  44         device=$(basename ${device})
  45
  46         local dir
  47         for dir in /var/lock /var/lock/ppp; do
  48                 [ -e "${dir}/LCK..${device}" ] \
  49                         && return ${EXIT_TRUE}
  50         done
  51
  52         return ${EXIT_FALSE}
  53 }
  54
  55 serial_is_unlocked() {
  56         serial_is_locked ${device} \
  57                 && return ${EXIT_FALSE} || return ${EXIT_TRUE}
  58 }
  59
  60 serial_is_modem() {
  61         local device=${1}
  62         assert isset device
  63
  64         modem_chat --timeout=2 "${device}" "AT" &>/dev/null
  65         local ret=$?
  66
  67         case "${ret}" in
  68                 ${EXIT_OK})
  69                         return ${EXIT_TRUE}
  70                         ;;
  71                 ${EXIT_ERROR})
  72                         return ${EXIT_FALSE}
  73                         ;;
  74                 *)
  75                         return ${EXIT_UNKNOWN}
  76                         ;;
  77         esac
  78 }
  79
  80 serial_get_bus_type() {
  81         local device="${1}"
  82         assert isset device
  83
  84         case "${device}" in
  85                 /dev/ttyUSB*)
  86                         print "usb"
  87                         return ${EXIT_OK}
  88                         ;;
  89         esac
  90
  91         print "unknown"
  92         return ${EXIT_ERROR}
  93 }