external/bsd/dhcpcd/dist/dhcpcd-hooks/10-wpa_supplicant

   1 # $NetBSD: 10-wpa_supplicant,v 1.6 2014/11/07 20:51:03 roy Exp $
   2
   3 # Start, reconfigure and stop wpa_supplicant per wireless interface.
   4 # This is needed because wpa_supplicant lacks hotplugging of any kind
   5 # and the user should not be expected to have to wire it into their system
   6 # if the base system doesn't do this itself.
   7
   8 if [ -z "$wpa_supplicant_conf" ]; then
   9         for x in \
  10                 /etc/wpa_supplicant/wpa_supplicant-"$interface".conf \
  11                 /etc/wpa_supplicant/wpa_supplicant.conf \
  12                 /etc/wpa_supplicant-"$interface".conf \
  13                 /etc/wpa_supplicant.conf \
  14         ; do
  15                 if [ -s "$x" ]; then
  16                         wpa_supplicant_conf="$x"
  17                         break
  18                 fi
  19         done
  20 fi
  21 : ${wpa_supplicant_conf:=/etc/wpa_supplicant.conf}
  22
  23 wpa_supplicant_ctrldir()
  24 {
  25         local dir
  26
  27         dir=$(key_get_value "[[:space:]]*ctrl_interface=" \
  28                 "$wpa_supplicant_conf")
  29         dir=$(trim "$dir")
  30         case "$dir" in
  31         DIR=*)
  32                 dir=${dir##DIR=}
  33                 dir=${dir%%[[:space:]]GROUP=*}
  34                 dir=$(trim "$dir")
  35                 ;;
  36         esac
  37         printf %s "$dir"
  38 }
  39
  40 wpa_supplicant_start()
  41 {
  42         local dir err errn
  43
  44         # If the carrier is up, don't bother checking anything
  45         [ "$ifcarrier" = "up" ] && return 0
  46
  47         # Pre flight checks
  48         if [ ! -s "$wpa_supplicant_conf" ]; then
  49                 syslog warn \
  50                         "$wpa_supplicant_conf does not exist"
  51                 syslog warn "not interacting with wpa_supplicant(8)"
  52                 return 1
  53         fi
  54         dir=$(wpa_supplicant_ctrldir)
  55         if [ -z "$dir" ]; then
  56                 syslog warn \
  57                         "ctrl_interface not defined in $wpa_supplicant_conf"
  58                 syslog warn "not interacting with wpa_supplicant(8)"
  59                 return 1
  60         fi
  61
  62         wpa_cli -p "$dir" -i "$interface" status >/dev/null 2>&1 && return 0
  63         syslog info "starting wpa_supplicant"
  64         driver=${wpa_supplicant_driver:+-D}$wpa_supplicant_driver
  65         err=$(wpa_supplicant -B -c"$wpa_supplicant_conf" -i"$interface" \
  66             "$driver" 2>&1)
  67         errn=$?
  68         if [ $errn != 0 ]; then
  69                 syslog err "failed to start wpa_supplicant"
  70                 syslog err "$err"
  71         fi
  72         return $errn
  73 }
  74
  75 wpa_supplicant_reconfigure()
  76 {
  77         local dir err errn
  78
  79         dir=$(wpa_supplicant_ctrldir)
  80         [ -z "$dir" ] && return 1
  81         if ! wpa_cli -p "$dir" -i "$interface" status >/dev/null 2>&1; then
  82                 wpa_supplicant_start
  83                 return $?
  84         fi
  85         syslog info "reconfiguring wpa_supplicant"
  86         err=$(wpa_cli -p "$dir" -i "$interface" reconfigure 2>&1)
  87         errn=$?
  88         if [ $errn != 0 ]; then
  89                 syslog err "failed to reconfigure wpa_supplicant"
  90                 syslog err "$err"
  91         fi
  92         return $errn
  93 }
  94
  95 wpa_supplicant_stop()
  96 {
  97         local dir err errn
  98
  99         dir=$(wpa_supplicant_ctrldir)
 100         [ -z "$dir" ] && return 1
 101         wpa_cli -p "$dir" -i "$interface" status >/dev/null 2>&1 || return 0
 102         syslog info "stopping wpa_supplicant"
 103         err=$(wpa_cli -i"$interface" terminate 2>&1)
 104         errn=$?
 105         if [ $errn != 0 ]; then
 106                 syslog err "failed to start wpa_supplicant"
 107                 syslog err "$err"
 108         fi
 109         return $errn
 110 }
 111
 112 if [ "$ifwireless" = "1" ] && \
 113     type wpa_supplicant >/dev/null 2>&1 && \
 114     type wpa_cli >/dev/null 2>&1
 115 then
 116         case "$reason" in
 117         PREINIT)        wpa_supplicant_start;;
 118         RECONFIGURE)    wpa_supplicant_reconfigure;;
 119         DEPARTED)       wpa_supplicant_stop;;
 120         esac
 121 fi