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|
#!/bin/sh
set -eu
get_iface_opts()
{
local opts_start_cb="${1}"
local opt_cb="${2}"
local opts_end_cb="${3}"
local script=
local opts=
local opt=
script="$(printf '
/^iface[ \t][ \t]*%s/,/^[^ \t]/{
/^$/q;
s/^[ \t][ \t]*%s-//p;
}
' "${IFACE}" "${0##*/}")"
opts="$(sed -n "${script}" /var/run/net-ifaces)"
if [ "x${opts}" = 'x' ]; then
return 0
fi
${opts_start_cb}
while read -r opt; do
${opt_cb} ${opt}
done <<-EOF
${opts}
EOF
${opts_end_cb}
return 0
}
wpa_opts_start_cb()
{
exec 3>"/var/run/wpa_supplicant.${IFACE}.conf"
printf 'ctrl_interface=DIR=/var/run/wpa_supplicant\ncountry=US\n\n' >&3
printf 'network={\n' >&3
}
wpa_opt_cb()
{
local field="${1}"
shift 1
local value="${*}"
field="$(printf '%s\n' "${field}" | tr '-' '_')"
case "${field}" in
ssid)
if printf '%s\n' "${value}" | grep -q '[^0-9A-Fa-f:]'
then
if [ "x${value#\"}" = "x${value}" ]; then
value="\"${value}\""
fi
fi
;;
psk)
if printf '%s\n' "${value}" | grep -q '[^0-9A-Fa-f]'
then
if [ "x${value#\"}" = "x${value}" ]; then
value="\"${value}\""
fi
fi
;;
esac
printf '\t%s=%s\n' "${field}" "${value}" >&3
}
wpa_opts_end_cb()
{
printf '}\n' >&3
exec &3>-
wpa_supplicant -B -s -Dnl80211 -i"${IFACE}" \
-c"/var/run/wpa_supplicant.${IFACE}.conf"
}
if [ "x${IFACE#wlan}" != "x${IFACE}" ]; then
get_iface_opts wpa_opts_start_cb wpa_opt_cb wpa_opts_end
fi
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