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Linux/UNIX/POSIX Shell Script  |  2009-09-19  |  2KB  |  77 lines
  1. #!/bin/sh
  2.  
  3. # Action script to enable/disable wpa-roam interfaces in reaction to
  4. # pm-action or ifplugd events.
  5. #
  6. # Copyright: Copyright (c) 2008-2009, Kel Modderman <kel@otaku42.de>
  7. # License:   GPL-2
  8. #
  9.  
  10. PATH=/sbin:/usr/sbin:/bin:/usr/bin
  11.  
  12. if [ ! -x /sbin/wpa_action ]; then
  13.     exit 0
  14. fi
  15.  
  16. SELF=action_wpa
  17. COMMAND=
  18. IFPLUGD_IFACE=
  19.  
  20. # pm-action(8) - <action> <suspend method>
  21. #
  22. # On suspend|hibernate, disconnect any wpa-roam managed interfaces,
  23. # reconnect it on resume.
  24.  
  25. case "${1}" in
  26.         suspend|hibernate)
  27.                 COMMAND=disconnect
  28.                 ;;
  29.         resume|thaw)
  30.                 COMMAND=reconnect
  31.                 ;;
  32. esac
  33.  
  34. if [ -z "$COMMAND" ]; then
  35.     # ifplugd(8) - <iface> <action>
  36.     #
  37.     # If an ifplugd managed interface is brought up, disconnect any
  38.     # wpa-roam managed interfaces so that only one "roaming" interface
  39.     # remains active on the system.
  40.  
  41.     IFPLUGD_IFACE="${1}"
  42.  
  43.     case "${2}" in
  44.         up)
  45.             COMMAND=disconnect
  46.             ;;
  47.         down)
  48.             COMMAND=reconnect
  49.             ;;
  50.         *)
  51.             echo "${SELF}: unknown $0 arguments: ${@}" >&2
  52.             exit 1
  53.             ;;
  54.         esac
  55. fi
  56.  
  57. if [ -z "$COMMAND" ]; then
  58.     echo "${SELF}: unknown arguments: ${@}" >&2
  59.     exit 1
  60. fi
  61.  
  62. for CTRL in /var/run/wpa_supplicant/*; do
  63.     [ -S "${CTRL}" ] || continue
  64.  
  65.     IFACE="${CTRL#/var/run/wpa_supplicant/}"
  66.  
  67.     wpa_action "${IFACE}" check || continue
  68.  
  69.     if [ "${IFPLUGD_IFACE}" ] && [ "${IFPLUGD_IFACE}" = "${IFACE}" ]; then
  70.         # if ifplugd is managing this interface (not likely but..)
  71.         # do nothing
  72.         continue
  73.     fi
  74.  
  75.     wpa_cli -i "${IFACE}" "${COMMAND}"
  76. done
  77.