gluon/package/gluon-autoupdater/files/usr/sbin/autoupdater

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#!/bin/sh
if test $(uci get autoupdater.default.enabled) != 1; then
echo "autoupdater is disabled"
exit 0
fi
PROBABILITY=$(uci get autoupdater.default.probability)
if test "a$1" != "a-f"; then
echo | awk "END{srand();exit rand() > $PROBABILITY}"
if test $? -ne 0; then
echo "No autoupdate this time. Use -f to override"
exit 0
fi
fi
BASE=$(uci get autoupdater.default.url)
PUBKEYS=$(uci get autoupdater.default.pubkey)
GOOD_SIGNATURES=$(uci get autoupdater.default.good_signatures)
BRANCH=$(uci get autoupdater.default.branch)
VERSION_FILE=/lib/gluon/release
newer_than() {
local old="$(printf '%s\n%s\n' "$1" "$2" | sort -n | head -n 1)"
test "$1" != "$old"
}
cleanup() {
rm -f $manifest
rm -f $fw_image
rm -f $manifest_upper
rm -f $manifest_lower
}
trap cleanup INT TERM EXIT PIPE
my_model="$(cat /tmp/sysinfo/model | sed 's/ /-/g' | tr '[A-Z]' '[a-z]')"
case "$my_model" in
"tl-wdr4300")
case "$(tplink_get_hwid)" in
"360000"*)
my_model="tl-wdr3600"
;;
esac
;;
esac
if [ ! -f "$VERSION_FILE" ]; then
echo "Couldn't determine firmware version!" >&2
exit 1
fi
my_version="$(cat "$VERSION_FILE")"
fw_image=$(mktemp)
manifest=$(mktemp)
manifest_upper=$(mktemp)
manifest_lower=$(mktemp)
wget -O$manifest "$BASE"/manifest
if test $? -ne 0; then
echo "Couldn't fetch manifest" >&2
exit 1
fi
seperator_line=$(cat $manifest|grep -n "^---$"|cut -d: -f1|head -n1)
if test -z "$seperator_line"; then
echo "Couldn't find --- marker!" >&2
exit 1
fi
head -n$(($seperator_line-1)) $manifest > $manifest_upper
tail -n+$(($seperator_line+1)) $manifest > $manifest_lower
signatures=""
while read sig; do
echo "$sig" | grep -q "^[0-9a-f]\{128\}$"
if test $? -ne 0; then
continue
fi
signatures="$signatures -s $sig"
done < $manifest_lower
pubkeys=""
for key in $PUBKEYS; do
pubkeys="$pubkeys -p $key"
done
ecdsaverify -n $GOOD_SIGNATURES $pubkeys $signatures $manifest_upper
if test $? -ne 0; then
echo "Not enough valid signatures!" >&2
exit 1
fi
grep -q "^BRANCH=${BRANCH}$" $manifest_upper
if test $? -ne 0; then
echo "Wrong branch. We'are on ${BRANCH}" >&2
exit 1
fi
my_firmware=$(grep "^${my_model} " $manifest_upper)
if test $? -ne 0; then
echo "No matching firmware found (model ${my_model})" >&2
exit 1
fi
fw_version=$(echo "${my_firmware}"|cut -d' ' -f2)
fw_md5=$(echo "${my_firmware}"|cut -d' ' -f3)
fw_file=$(echo "${my_firmware}"|cut -d' ' -f4)
if newer_than "$fw_version" "$my_version"; then
echo "New version available"
wget -O$fw_image "${BASE}/${fw_file}"
if test $? -ne 0; then
echo "Error downloading image" >&2
exit 1
fi
image_md5=$(md5sum "$fw_image"|cut -b-32)
if test "$image_md5" != "$fw_md5"; then
echo "Invalid image checksum" >&2
exit 1
fi
echo "Upgrading firmware."
sysupgrade "${fw_image}"
else
echo "No new firmware available"
fi
exit 0