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