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Script to update FritzBox ssl certificate
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#!/bin/bash | |
FB_URL="" | |
SID="" | |
SID_FILE="/tmp/fb_sid" | |
function init() { | |
FB_URL="$1" | |
if [ ! -f $SID_FILE ]; then | |
touch $SID_FILE | |
fi | |
SID=$(cat $SID_FILE) | |
} | |
function start-session() { | |
local PASSWORD="$1" | |
local XML=$(curl --silent "$FB_URL/login_sid.lua" --data "sid=${SID}") | |
SID=$(echo "$XML" | xmllint --xpath "/SessionInfo/SID/child::text()" - ) | |
if [[ "${SID}" == "0000000000000000" ]]; then | |
local CHALLENGE=$(echo "$XML" | xmllint --xpath "/SessionInfo/Challenge/child::text()" - ) | |
local MD5=$(echo -n "$CHALLENGE-$PASSWORD" | sed -e 's,.,&\n,g' | tr '\n' '\0' | md5sum | grep -o "[0-9a-z]\{32\}") | |
local RESPONSE="${CHALLENGE}-${MD5}" | |
XML=$(curl --silent "${FB_URL}/login_sid.lua" --data "response=${RESPONSE}" --data "username=") | |
SID=$(echo "$XML" | xmllint --xpath "/SessionInfo/SID/child::text()" - ) | |
echo "${SID}" > ${SID_FILE} | |
fi | |
} | |
function update-ssl-cert() { | |
local CERT_FILE="$1" | |
local CERT_FILE_NAME=$(basename "${CERT_FILE}") | |
local RESPONSE=$(curl --silent "${FB_URL}/cgi-bin/firmwarecfg" --form "sid=${SID}" --form "BoxCertImportFile=@${CERT_FILE};filename=${CERT_FILE_NAME}") | |
if echo ${RESPONSE} | grep --silent "successful"; then | |
echo $(echo ${RESPONSE} | grep "successful" | sed -e 's/<[^>]*>//g') | |
return 0 | |
elif echo ${RESPONSE} | grep --silent "ErrorMsg"; then | |
echo $(echo ${RESPONSE} | grep "ErrorMsg" | sed -e 's/<[^>]*>//g') | |
return 1 | |
else | |
echo "Unknown result" | |
return 2 | |
fi | |
} | |
function logout() { | |
curl "${FB_URL}/index.lua" --form "sid=438f56b95f9f66fb" --form "logout=1" | |
rm "${SID_FILE}" | |
} | |
function main() { | |
local URL="$1" | |
local PASSWORD="$2" | |
local CERT_FILE="$3" | |
check-xmllint | |
init "$URL" | |
start-session "$PASSWORD" | |
if [[ "${SID}" != "0000000000000000" ]]; then | |
update-ssl-cert "$CERT_FILE" | |
logout | |
else | |
echo "Wrong Password" | |
exit 4 | |
fi | |
} | |
function show-usage() { | |
echo "Script to update FritzBox ssl certificate" | |
echo "Usage:" | |
echo "$(basename $0) {FritzBox Url} {FritzBox Password} {Path to new Cert File}" | |
echo "Example:" | |
echo "$(basename $0) 'http://192.168.0.1' 'changeme' '/tmp/mycert.pem'" | |
} | |
# In Synology there's not xmllint so we use a docker container | |
function check-xmllint() { | |
if ! which xmllint; then | |
shopt -s expand_aliases | |
alias xmllint='docker run -i --rm digipost/docker-xmllint xmllint' | |
fi | |
} | |
#Check parameters | |
EXPECTED_ARGS=3 | |
if [ $# -ne $EXPECTED_ARGS ]; then | |
show-usage | |
exit 3 | |
else | |
main "$@" | |
fi |
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