# # script for sending updates to cloudflare.com # 2014-2015 Christian Schoenebeck # many thanks to Paul for testing and feedback during development # # 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 - your full hostname to update, in cloudflare its subdomain.domain # i.e. myhost.example.com where myhost is the subdomain and example.com is your domain # # variable __IP already defined with the ip-address to use for update # [ $use_https -eq 0 ] && write_log 14 "Cloudflare only support updates via Secure HTTP (HTTPS). Please correct configuration!" [ -z "$username" ] && write_log 14 "Service section not configured correctly! Missing 'username'" [ -z "$password" ] && write_log 14 "Service section not configured correctly! Missing 'password'" local __RECID __URL __KEY __KEYS __FOUND __SUBDOM __DOMAIN __TLD # split given Host/Domain into TLD, registrable domain, and subdomain split_FQDN $domain __TLD __DOMAIN __SUBDOM [ $? -ne 0 -o -z "$__DOMAIN" ] && \ write_log 14 "Wrong Host/Domain configuration ($domain). Please correct configuration!" # put together what we need __DOMAIN="$__DOMAIN.$__TLD" # parse OpenWrt script with # functions for parsing and generating json . /usr/share/libubox/jshn.sh # function copied from /usr/share/libubox/jshn.sh # from BB14.09 for backward compatibility to AA12.09 grep -i "json_get_keys" /usr/share/libubox/jshn.sh >/dev/null 2>&1 || json_get_keys() { local __dest="$1" local _tbl_cur if [ -n "$2" ]; then json_get_var _tbl_cur "$2" else _json_get_var _tbl_cur JSON_CUR fi local __var="${JSON_PREFIX}KEYS_${_tbl_cur}" eval "export -- \"$__dest=\${$__var}\"; [ -n \"\${$__var+x}\" ]" } # function to "sed" unwanted string parts from DATFILE cleanup() { # based on the sample output on cloudflare.com homepage we need to do some cleanup sed -i 's/^[ \t]*//;s/[ \t]*$//' $DATFILE # remove invisible chars at beginning and end of lines sed -i '/^-$/d' $DATFILE # remove lines with "-" (dash) sed -i '/^$/d' $DATFILE # remove empty lines sed -i "#'##g" $DATFILE # remove "'" (single quote) } # build url according to cloudflare client api at https://www.cloudflare.com/docs/client-api.html # to "rec_load_all" to detect rec_id needed for update __URL="https://www.cloudflare.com/api_json.html" # https://www.cloudflare.com/api_json.html __URL="${__URL}?a=rec_load_all" # -d 'a=rec_load_all' __URL="${__URL}&tkn=$password" # -d 'tkn=8afbe6dea02407989af4dd4c97bb6e25' __URL="${__URL}&email=$username" # -d 'email=sample@example.com' __URL="${__URL}&z=$__DOMAIN" # -d 'z=example.com' # lets request the data do_transfer "$__URL" || return 1 cleanup # cleanup dat file json_load "$(cat $DATFILE)" # lets extract data __FOUND=0 # found record indicator json_get_var __RES "result" # cloudflare result of last request json_get_var __MSG "msg" # cloudflare error message [ "$__RES" != "success" ] && { write_log 4 "'rec_load_all' failed with error: \n$__MSG" return 1 } json_select "response" json_select "recs" json_select "objs" json_get_keys __KEYS for __KEY in $__KEYS; do local __ZONE __DISPLAY __NAME __TYPE json_select "$__KEY" # json_get_var __ZONE "zone_name" # for debugging # json_get_var __DISPLAY "display_name" # for debugging json_get_var __NAME "name" json_get_var __TYPE "type" if [ "$__NAME" = "$domain" ]; then # we must verify IPv4 and IPv6 because there might be both for the same host [ \( $use_ipv6 -eq 0 -a "$__TYPE" = "A" \) -o \( $use_ipv6 -eq 1 -a "$__TYPE" = "AAAA" \) ] && { __FOUND=1 # mark found break # found leave for loop } fi json_select .. done [ $__FOUND -eq 0 ] && { # we don't need to continue trying to update cloudflare because record to update does not exist # user has to setup record first outside ddns-scripts write_log 14 "No valid record found at Cloudflare setup. Please create first!" } json_get_var __RECID "rec_id" # last thing to do get rec_id json_cleanup # cleanup write_log 7 "rec_id '$__RECID' detected for host/domain '$domain'" # build url according to cloudflare client api at https://www.cloudflare.com/docs/client-api.html # for "rec_edit" to update IP address __URL="https://www.cloudflare.com/api_json.html" # https://www.cloudflare.com/api_json.html __URL="${__URL}?a=rec_edit" # -d 'a=rec_edit' __URL="${__URL}&tkn=$password" # -d 'tkn=8afbe6dea02407989af4dd4c97bb6e25' __URL="${__URL}&id=$__RECID" # -d 'id=9001' __URL="${__URL}&email=$username" # -d 'email=sample@example.com' __URL="${__URL}&z=$__DOMAIN" # -d 'z=example.com' [ $use_ipv6 -eq 0 ] && __URL="${__URL}&type=A" # -d 'type=A' (IPv4) [ $use_ipv6 -eq 1 ] && __URL="${__URL}&type=AAAA" # -d 'type=AAAA' (IPv6) # handle subdomain or domain record [ -n "$__SUBDOM" ] && __URL="${__URL}&name=$__SUBDOM" # -d 'name=sub' (HOST/SUBDOMAIN) [ -z "$__SUBDOM" ] && __URL="${__URL}&name=$__DOMAIN" # -d 'name=example.com'(DOMAIN) __URL="${__URL}&content=$__IP" # -d 'content=1.2.3.4' __URL="${__URL}&service_mode=0" # -d 'service_mode=0' __URL="${__URL}&ttl=1" # -d 'ttl=1' # lets do the update do_transfer "$__URL" || return 1 cleanup # cleanup tmp file json_load "$(cat $DATFILE)" # lets extract data json_get_var __RES "result" # cloudflare result of last request json_get_var __MSG "msg" # cloudflare error message [ "$__RES" != "success" ] && { write_log 4 "'rec_edit' failed with error:\n$__MSG" return 1 } write_log 7 "Update of rec_id '$__RECID' successful" return 0