#!/usr/bin/env sh
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#Here is a script to deploy cert to an AVM FRITZ!Box router.
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#returns 0 means success, otherwise error.
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#DEPLOY_FRITZBOX_USERNAME="username"
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#DEPLOY_FRITZBOX_PASSWORD="password"
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#DEPLOY_FRITZBOX_URL="https://fritz.box"
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# Kudos to wikrie at Github for his FRITZ!Box update script:
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# https://gist.github.com/wikrie/f1d5747a714e0a34d0582981f7cb4cfb
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######## Public functions #####################
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#domain keyfile certfile cafile fullchain
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fritzbox_deploy() {
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_cdomain="$1"
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_ckey="$2"
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_ccert="$3"
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_cca="$4"
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_cfullchain="$5"
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_debug _cdomain "$_cdomain"
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_debug _ckey "$_ckey"
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_debug _ccert "$_ccert"
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_debug _cca "$_cca"
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_debug _cfullchain "$_cfullchain"
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if ! _exists iconv; then
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if ! _exists uconv; then
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if ! _exists perl; then
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_err "iconv or uconv or perl not found"
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return 1
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fi
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fi
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fi
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# Clear traces of incorrectly stored values
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_clearaccountconf DEPLOY_FRITZBOX_USERNAME
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_clearaccountconf DEPLOY_FRITZBOX_PASSWORD
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_clearaccountconf DEPLOY_FRITZBOX_URL
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# Read config from saved values or env
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_getdeployconf DEPLOY_FRITZBOX_USERNAME
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_getdeployconf DEPLOY_FRITZBOX_PASSWORD
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_getdeployconf DEPLOY_FRITZBOX_URL
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_debug DEPLOY_FRITZBOX_URL "$DEPLOY_FRITZBOX_URL"
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_debug DEPLOY_FRITZBOX_USERNAME "$DEPLOY_FRITZBOX_USERNAME"
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_secure_debug DEPLOY_FRITZBOX_PASSWORD "$DEPLOY_FRITZBOX_PASSWORD"
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if [ -z "$DEPLOY_FRITZBOX_USERNAME" ]; then
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_err "FRITZ!Box username is not found, please define DEPLOY_FRITZBOX_USERNAME."
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return 1
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fi
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if [ -z "$DEPLOY_FRITZBOX_PASSWORD" ]; then
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_err "FRITZ!Box password is not found, please define DEPLOY_FRITZBOX_PASSWORD."
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return 1
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fi
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if [ -z "$DEPLOY_FRITZBOX_URL" ]; then
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_err "FRITZ!Box url is not found, please define DEPLOY_FRITZBOX_URL."
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return 1
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fi
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# Save current values
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_savedeployconf DEPLOY_FRITZBOX_USERNAME "$DEPLOY_FRITZBOX_USERNAME"
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_savedeployconf DEPLOY_FRITZBOX_PASSWORD "$DEPLOY_FRITZBOX_PASSWORD"
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_savedeployconf DEPLOY_FRITZBOX_URL "$DEPLOY_FRITZBOX_URL"
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# Do not check for a valid SSL certificate, because initially the cert is not valid, so it could not install the LE generated certificate
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export HTTPS_INSECURE=1
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_info "Log in to the FRITZ!Box"
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_fritzbox_challenge="$(_get "${DEPLOY_FRITZBOX_URL}/login_sid.lua" | sed -e 's/^.*<Challenge>//' -e 's/<\/Challenge>.*$//')"
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if _exists iconv; then
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_fritzbox_hash="$(printf "%s-%s" "${_fritzbox_challenge}" "${DEPLOY_FRITZBOX_PASSWORD}" | iconv -f ASCII -t UTF16LE | _digest md5 hex)"
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elif _exists uconv; then
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_fritzbox_hash="$(printf "%s-%s" "${_fritzbox_challenge}" "${DEPLOY_FRITZBOX_PASSWORD}" | uconv -f ASCII -t UTF16LE | _digest md5 hex)"
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else
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_fritzbox_hash="$(printf "%s-%s" "${_fritzbox_challenge}" "${DEPLOY_FRITZBOX_PASSWORD}" | perl -p -e 'use Encode qw/encode/; print encode("UTF-16LE","$_"); $_="";' | _digest md5 hex)"
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fi
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_fritzbox_sid="$(_get "${DEPLOY_FRITZBOX_URL}/login_sid.lua?sid=0000000000000000&username=${DEPLOY_FRITZBOX_USERNAME}&response=${_fritzbox_challenge}-${_fritzbox_hash}" | sed -e 's/^.*<SID>//' -e 's/<\/SID>.*$//')"
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if [ -z "${_fritzbox_sid}" ] || [ "${_fritzbox_sid}" = "0000000000000000" ]; then
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_err "Logging in to the FRITZ!Box failed. Please check username, password and URL."
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return 1
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fi
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_info "Generate form POST request"
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_post_request="$(_mktemp)"
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_post_boundary="---------------------------$(date +%Y%m%d%H%M%S)"
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# _CERTPASSWORD_ is unset because Let's Encrypt certificates don't have a password. But if they ever do, here's the place to use it!
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_CERTPASSWORD_=
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{
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printf -- "--"
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printf -- "%s\r\n" "${_post_boundary}"
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printf "Content-Disposition: form-data; name=\"sid\"\r\n\r\n%s\r\n" "${_fritzbox_sid}"
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printf -- "--"
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printf -- "%s\r\n" "${_post_boundary}"
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printf "Content-Disposition: form-data; name=\"BoxCertPassword\"\r\n\r\n%s\r\n" "${_CERTPASSWORD_}"
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printf -- "--"
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printf -- "%s\r\n" "${_post_boundary}"
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printf "Content-Disposition: form-data; name=\"BoxCertImportFile\"; filename=\"BoxCert.pem\"\r\n"
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printf "Content-Type: application/octet-stream\r\n\r\n"
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cat "${_ckey}" "${_cfullchain}"
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printf "\r\n"
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printf -- "--"
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printf -- "%s--" "${_post_boundary}"
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} >>"${_post_request}"
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_info "Upload certificate to the FRITZ!Box"
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export _H1="Content-type: multipart/form-data boundary=${_post_boundary}"
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_post "$(cat "${_post_request}")" "${DEPLOY_FRITZBOX_URL}/cgi-bin/firmwarecfg" | grep SSL
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retval=$?
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if [ $retval = 0 ]; then
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_info "Upload successful"
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else
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_err "Upload failed"
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fi
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rm "${_post_request}"
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return $retval
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}
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