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Create DDNSS API based on the work of helbgd

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mod242 6 years ago
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  1. 133
      dnsapi/dns_ddnss.sh

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dnsapi/dns_ddnss.sh

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#!/usr/bin/env sh
#Created by RaidenII, to use DuckDNS's API to add/remove text records
#06/27/201
#modified by helbgd @ 03/13/2018 to support ddnss.de
#modified by mod242 @ 04/24/2018 to support different ddnss domains
#Please note: the Wildcard Feature must be turned on for the Host record
#and the checkbox for TXT needs to be enabled
# Pass credentials before "acme.sh --issue --dns dns_ddnss ..."
# --
# export DDNSS_Token="aaaaaaaa-bbbb-cccc-dddd-eeeeeeeeeeee"
# --
#
DDNSS_DNS_API="https://ddnss.de/upd.php"
######## Public functions #####################
#Usage: dns_ddnss_add _acme-challenge.domain.ddnss.de "XKrxpRBosdIKFzxW_CT3KLZNf6q0HG9i01zxXp5CPBs"
dns_ddnss_add() {
fulldomain=$1
txtvalue=$2
DDNSS_Token="${DDNSS_Token:-$(_readaccountconf_mutable DDNSS_Token)}"
if [ -z "$DDNSS_Token" ]; then
_err "You must export variable: DDNSS_Token"
_err "The token for your DDNSS account is necessary."
_err "You can look it up in your DDNSS account."
return 1
fi
# Now save the credentials.
_saveaccountconf_mutable DDNSS_Token "$DDNSS_Token"
# Unfortunately, DDNSS does not seems to support lookup domain through API
# So I assume your credentials (which are your domain and token) are correct
# If something goes wrong, we will get a KO response from DDNSS
if ! _ddnss_get_domain; then
return 1
fi
# Now add the TXT record to DDNSS DNS
_info "Trying to add TXT record"
if _ddnss_rest GET "key=$DDNSS_Token&host=$_ddnss_domain&txtm=1&txt=$txtvalue"; then
if [ "$response" = "Updated 1 hostname." ]; then
_info "TXT record has been successfully added to your DDNSS domain."
_info "Note that all subdomains under this domain uses the same TXT record."
return 0
else
_err "Errors happened during adding the TXT record, response=$response"
return 1
fi
else
_err "Errors happened during adding the TXT record."
return 1
fi
}
#Usage: fulldomain txtvalue
#Remove the txt record after validation.
dns_ddnss_rm() {
fulldomain=$1
txtvalue=$2
DDNSS_Token="${DDNSS_Token:-$(_readaccountconf_mutable DDNSS_Token)}"
if [ -z "$DDNSS_Token" ]; then
_err "You must export variable: DDNSS_Token"
_err "The token for your DDNSS account is necessary."
_err "You can look it up in your DDNSS account."
return 1
fi
if ! _ddnss_get_domain; then
return 1
fi
# Now remove the TXT record from DDNS DNS
_info "Trying to remove TXT record"
if _ddnss_rest GET "key=$DDNSS_Token&host=$_ddnss_domain&txtm=1&txt=."; then
if [ "$response" = "Updated 1 hostname." ]; then
_info "TXT record has been successfully removed from your DDNSS domain."
return 0
else
_err "Errors happened during removing the TXT record, response=$response"
return 1
fi
else
_err "Errors happened during removing the TXT record."
return 1
fi
}
#################### Private functions below ##################################
#fulldomain=_acme-challenge.domain.ddnss.de
#returns
# _ddnss_domain=domain
_ddnss_get_domain() {
# We'll extract the domain/username from full domain
_ddnss_domain="$(echo "$fulldomain" | _lower_case | _egrep_o '[.][^.][^.]*[.](ddnss|dyn-ip24|dyndns|dyn|dyndns1|home-webserver|myhome-server|dynip)\..*' | cut -d . -f 2-)"
if [ -z "$_ddnss_domain" ]; then
_err "Error extracting the domain."
return 1
fi
return 0
}
#Usage: method URI
_ddnss_rest() {
method=$1
param="$2"
_debug param "$param"
url="$DDNSS_DNS_API?$param"
_debug url "$url"
# DDNSS uses GET to update domain info
if [ "$method" = "GET" ]; then
response="$(_get "$url" | sed -e :a -e 's/<[^>]*>//g;/</N;//ba' |tail -n 1 )"
else
_err "Unsupported method"
return 1
fi
_debug2 response "$response"
return 0
}
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