functions.usb

   1 #!/bin/bash
   2 ###############################################################################
   3 #                                                                             #
   4 # IPFire.org - A linux based firewall                                         #
   5 # Copyright (C) 2013  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 function usb_device_find_by_tty() {
  23         local tty="${1}"
  24         assert isset tty
  25
  26         # Strip /dev.
  27         tty="$(basename "${tty}")"
  28
  29         local path="/sys/bus/usb-serial/devices/${tty}"
  30
  31         # Resolve symlink
  32         path="$(readlink -m "${path}")"
  33
  34         print "$(dirname "${path}")"
  35         return ${EXIT_OK}
  36 }
  37
  38 function usb_device_list_interfaces() {
  39         local path="${1}"
  40         assert [ -d "${path}" ]
  41
  42         local interface
  43         for interface in ${path}/ep_*; do
  44                 [ -d "${interface}" ] || continue
  45                 print "${interface}"
  46         done
  47
  48         return ${EXIT_OK}
  49 }
  50
  51 function usb_device_get_interface_type() {
  52         local interface="${1}"
  53         assert isset interface
  54
  55         fread "${interface}/type"
  56 }
  57
  58 function usb_device_has_interface_type_interrupt() {
  59         local device="${1}"
  60         assert isset device
  61
  62         local interface type
  63         while read -r interface; do
  64                 type="$(usb_device_get_interface_type "${interface}")"
  65
  66                 [ "${type}" = "Interrupt" ] && return ${EXIT_TRUE}
  67         done <<< "$(usb_device_list_interfaces "${device}")"
  68
  69         return ${EXIT_FALSE}
  70 }