You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
188 lines
6.7 KiB
188 lines
6.7 KiB
#!/bin/sh
|
|
#
|
|
#.Distributed under the terms of the GNU General Public License (GPL) version 2.0
|
|
#
|
|
# script for sending updates to cloudflare.com
|
|
#.based on Ben Kulbertis cloudflare-update-record.sh found at http://gist.github.com/benkulbertis
|
|
#.and on George Johnson's cf-ddns.sh found at https://github.com/gstuartj/cf-ddns.sh
|
|
#.2016-2017 Christian Schoenebeck <christian dot schoenebeck at gmail dot com>
|
|
# CloudFlare API documentation at https://api.cloudflare.com/
|
|
#
|
|
# This script is parsed by dynamic_dns_functions.sh inside send_update() function
|
|
#
|
|
# using following options from /etc/config/ddns
|
|
# option username - your cloudflare e-mail
|
|
# option password - cloudflare api key, you can get it from cloudflare.com/my-account/
|
|
# option domain - "hostname@yourdomain.TLD" # syntax changed to remove split_FQDN() function and tld_names.dat.gz
|
|
#
|
|
# variable __IP already defined with the ip-address to use for update
|
|
#
|
|
|
|
# check parameters
|
|
[ -z "$CURL_SSL" ] && write_log 14 "Cloudflare communication require cURL with SSL support. Please install"
|
|
[ -z "$username" ] && write_log 14 "Service section not configured correctly! Missing key as 'username'"
|
|
[ -z "$password" ] && write_log 14 "Service section not configured correctly! Missing secret as 'password'"
|
|
[ $use_https -eq 0 ] && use_https=1 # force HTTPS
|
|
|
|
# used variables
|
|
local __HOST __DOMAIN __TYPE __URLBASE __PRGBASE __RUNPROG __DATA __IPV6 __ZONEID __RECID
|
|
local __URLBASE="https://api.cloudflare.com/client/v4"
|
|
|
|
# split __HOST __DOMAIN from $domain
|
|
# given data:
|
|
# @example.com for "domain record"
|
|
# host.sub@example.com for a "host record"
|
|
__HOST=$(printf %s "$domain" | cut -d@ -f1)
|
|
__DOMAIN=$(printf %s "$domain" | cut -d@ -f2)
|
|
|
|
# Cloudflare v4 needs:
|
|
# __DOMAIN = the base domain i.e. example.com
|
|
# __HOST = the FQDN of record to modify
|
|
# i.e. example.com for the "domain record" or host.sub.example.com for "host record"
|
|
|
|
# handling domain record then set __HOST = __DOMAIN
|
|
[ -z "$__HOST" ] && __HOST=$__DOMAIN
|
|
# handling host record then rebuild fqdn host@domain.tld => host.domain.tld
|
|
[ "$__HOST" != "$__DOMAIN" ] && __HOST="${__HOST}.${__DOMAIN}"
|
|
|
|
# set record type
|
|
[ $use_ipv6 -eq 0 ] && __TYPE="A" || __TYPE="AAAA"
|
|
|
|
# transfer function to use for godaddy
|
|
# all needed variables are set global here
|
|
# so we can use them directly
|
|
cloudflare_transfer() {
|
|
local __CNT=0
|
|
local __ERR
|
|
while : ; do
|
|
write_log 7 "#> $__RUNPROG"
|
|
eval "$__RUNPROG"
|
|
__ERR=$? # save communication error
|
|
[ $__ERR -eq 0 ] && break # no error break while
|
|
|
|
write_log 3 "cURL Error: '$__ERR'"
|
|
write_log 7 "$(cat $ERRFILE)" # report error
|
|
|
|
[ $VERBOSE_MODE -gt 1 ] && {
|
|
# VERBOSE_MODE > 1 then NO retry
|
|
write_log 4 "Transfer failed - Verbose Mode: $VERBOSE_MODE - NO retry on error"
|
|
break
|
|
}
|
|
|
|
__CNT=$(( $__CNT + 1 )) # increment error counter
|
|
# if error count > retry_count leave here
|
|
[ $retry_count -gt 0 -a $__CNT -gt $retry_count ] && \
|
|
write_log 14 "Transfer failed after $retry_count retries"
|
|
|
|
write_log 4 "Transfer failed - retry $__CNT/$retry_count in $RETRY_SECONDS seconds"
|
|
sleep $RETRY_SECONDS &
|
|
PID_SLEEP=$!
|
|
wait $PID_SLEEP # enable trap-handler
|
|
PID_SLEEP=0
|
|
done
|
|
|
|
# check for error
|
|
grep -q '"success":true' $DATFILE || {
|
|
write_log 4 "CloudFlare reported an error:"
|
|
write_log 7 "$(cat $DATFILE)" # report error
|
|
return 1 # HTTP-Fehler
|
|
}
|
|
}
|
|
|
|
# Build base command to use
|
|
__PRGBASE="$CURL -RsS -o $DATFILE --stderr $ERRFILE"
|
|
# force network/interface-device to use for communication
|
|
if [ -n "$bind_network" ]; then
|
|
local __DEVICE
|
|
network_get_physdev __DEVICE $bind_network || \
|
|
write_log 13 "Can not detect local device using 'network_get_physdev $bind_network' - Error: '$?'"
|
|
write_log 7 "Force communication via device '$__DEVICE'"
|
|
__PRGBASE="$__PRGBASE --interface $__DEVICE"
|
|
fi
|
|
# force ip version to use
|
|
if [ $force_ipversion -eq 1 ]; then
|
|
[ $use_ipv6 -eq 0 ] && __PRGBASE="$__PRGBASE -4" || __PRGBASE="$__PRGBASE -6" # force IPv4/IPv6
|
|
fi
|
|
# set certificate parameters
|
|
if [ "$cacert" = "IGNORE" ]; then # idea from Ticket #15327 to ignore server cert
|
|
__PRGBASE="$__PRGBASE --insecure" # but not empty better to use "IGNORE"
|
|
elif [ -f "$cacert" ]; then
|
|
__PRGBASE="$__PRGBASE --cacert $cacert"
|
|
elif [ -d "$cacert" ]; then
|
|
__PRGBASE="$__PRGBASE --capath $cacert"
|
|
elif [ -n "$cacert" ]; then # it's not a file and not a directory but given
|
|
write_log 14 "No valid certificate(s) found at '$cacert' for HTTPS communication"
|
|
fi
|
|
# disable proxy if not set (there might be .wgetrc or .curlrc or wrong environment set)
|
|
# or check if libcurl compiled with proxy support
|
|
if [ -z "$proxy" ]; then
|
|
__PRGBASE="$__PRGBASE --noproxy '*'"
|
|
elif [ -z "$CURL_PROXY" ]; then
|
|
# if libcurl has no proxy support and proxy should be used then force ERROR
|
|
write_log 13 "cURL: libcurl compiled without Proxy support"
|
|
fi
|
|
# set headers
|
|
__PRGBASE="$__PRGBASE --header 'X-Auth-Email: $username' "
|
|
__PRGBASE="$__PRGBASE --header 'X-Auth-Key: $password' "
|
|
__PRGBASE="$__PRGBASE --header 'Content-Type: application/json' "
|
|
# __PRGBASE="$__PRGBASE --header 'Accept: application/json' "
|
|
|
|
# read zone id for registered domain.TLD
|
|
__RUNPROG="$__PRGBASE --request GET '$__URLBASE/zones?name=$__DOMAIN'"
|
|
cloudflare_transfer || return 1
|
|
# extract zone id
|
|
__ZONEID=$(grep -o '"id":"[^"]*' $DATFILE | grep -o '[^"]*$' | head -1)
|
|
[ -z "$__ZONEID" ] && {
|
|
write_log 4 "Could not detect 'zone id' for domain.tld: '$__DOMAIN'"
|
|
return 127
|
|
}
|
|
|
|
# read record id for A or AAAA record of host.domain.TLD
|
|
__RUNPROG="$__PRGBASE --request GET '$__URLBASE/zones/$__ZONEID/dns_records?name=$__HOST&type=$__TYPE'"
|
|
cloudflare_transfer || return 1
|
|
# extract record id
|
|
__RECID=$(grep -o '"id":"[^"]*' $DATFILE | grep -o '[^"]*$' | head -1)
|
|
[ -z "$__RECID" ] && {
|
|
write_log 4 "Could not detect 'record id' for host.domain.tld: '$__HOST'"
|
|
return 127
|
|
}
|
|
|
|
# extract current stored IP
|
|
__DATA=$(grep -o '"content":"[^"]*' $DATFILE | grep -o '[^"]*$' | head -1)
|
|
|
|
# check data
|
|
[ $use_ipv6 -eq 0 ] \
|
|
&& __DATA=$(printf "%s" "$__DATA" | grep -m 1 -o "$IPV4_REGEX") \
|
|
|| __DATA=$(printf "%s" "$__DATA" | grep -m 1 -o "$IPV6_REGEX")
|
|
|
|
# we got data so verify
|
|
[ -n "$__DATA" ] && {
|
|
# expand IPv6 for compare
|
|
if [ $use_ipv6 -eq 1 ]; then
|
|
expand_ipv6 $__IP __IPV6
|
|
expand_ipv6 $__DATA __DATA
|
|
[ "$__DATA" = "$__IPV6" ] && { # IPv6 no update needed
|
|
write_log 7 "IPv6 at CloudFlare.com already up to date"
|
|
return 0
|
|
}
|
|
else
|
|
[ "$__DATA" = "$__IP" ] && { # IPv4 no update needed
|
|
write_log 7 "IPv4 at CloudFlare.com already up to date"
|
|
return 0
|
|
}
|
|
fi
|
|
}
|
|
|
|
# update is needed
|
|
# let's build data to send,
|
|
# use file to work around " needed for json
|
|
cat > $DATFILE << EOF
|
|
{"id":"$__ZONEID","type":"$__TYPE","name":"$__HOST","content":"$__IP"}
|
|
EOF
|
|
|
|
# let's complete transfer command
|
|
__RUNPROG="$__PRGBASE --request PUT --data @$DATFILE '$__URLBASE/zones/$__ZONEID/dns_records/$__RECID'"
|
|
cloudflare_transfer || return 1
|
|
|
|
return 0
|
|
|