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#!/usr/bin/env sh
#Author: Herman Sletteng
#Report Bugs here: https://github.com/loial/acme.sh
#
#
# Note, gratisdns requires a login first, so the script needs to handle
# temporary cookies. Since acme.sh _get/_post currently don't directly support
# cookies, I've defined wrapper functions _myget/_mypost to set the headers
GDNSDK_API="https://admin.gratisdns.com"
######## Public functions #####################
#Usage: dns_gdnsdk_add _acme-challenge.www.domain.com "XKrxpRBosdIKFzxW_CT3KLZNf6q0HG9i01zxXp5CPBs"
dns_gdnsdk_add() {
fulldomain=$1
txtvalue=$2
_info "Using gratisdns.dk"
_debug fulldomain "$fulldomain"
_debug txtvalue "$txtvalue"
if ! _gratisdns_login; then
_err "Login failed!"
return 1
fi
#finding domain zone
if ! _get_domain; then
_err "No matching root domain for $fulldomain found"
return 1
fi
# adding entry
_info "Adding the entry"
_mypost "action=dns_primary_record_added_txt&user_domain=$_domain&name=$fulldomain&txtdata=$txtvalue&ttl=1"
if _successful_update; then return 0; fi
_err "Couldn't create entry!"
return 1
}
#Usage: fulldomain txtvalue
#Remove the txt record after validation.
dns_gdnsdk_rm() {
fulldomain=$1
txtvalue=$2
_info "Using gratisdns.dk"
_debug fulldomain "$fulldomain"
_debug txtvalue "$txtvalue"
if ! _gratisdns_login; then
_err "Login failed!"
return 1
fi
if ! _get_domain; then
_err "No matching root domain for $fulldomain found"
return 1
fi
_findentry "$fulldomain" "$txtvalue"
if [ -z "$_id" ]; then
_info "Entry doesn't exist, nothing to delete"
return 0
fi
_debug "Deleting record..."
_mypost "action=dns_primary_delete_txt&user_domain=$_domain&id=$_id"
# removing entry
if _successful_update; then return 0; fi
_err "Couldn't delete entry!"
return 1
}
#################### Private functions below ##################################
_checkcredentials() {
GDNSDK_Username="${GDNSDK_Username:-$(_readaccountconf_mutable GDNSDK_Username)}"
GDNSDK_Password="${GDNSDK_Password:-$(_readaccountconf_mutable GDNSDK_Password)}"
if [ -z "$GDNSDK_Username" ] || [ -z "$GDNSDK_Password" ]; then
GDNSDK_Username=""
GDNSDK_Password=""
_err "You haven't specified gratisdns.dk username and password yet."
_err "Please add credentials and try again."
return 1
fi
#save the credentials to the account conf file.
_saveaccountconf_mutable GDNSDK_Username "$GDNSDK_Username"
_saveaccountconf_mutable GDNSDK_Password "$GDNSDK_Password"
return 0
}
_checkcookie() {
GDNSDK_Cookie="${GDNSDK_Cookie:-$(_readaccountconf_mutable GDNSDK_Cookie)}"
if [ -z "$GDNSDK_Cookie" ]; then
_debug "No cached cookie found"
return 1
fi
_myget "action="
if (echo "$_result" | grep -q "logmeout"); then
_debug "Cached cookie still valid"
return 0
fi
_debug "Cached cookie no longer valid"
GDNSDK_Cookie=""
_saveaccountconf_mutable GDNSDK_Cookie "$GDNSDK_Cookie"
return 1
}
_gratisdns_login() {
if ! _checkcredentials; then return 1; fi
if _checkcookie; then
_debug "Already logged in"
return 0
fi
_debug "Logging into GratisDNS with user $GDNSDK_Username"
if ! _mypost "login=$GDNSDK_Username&password=$GDNSDK_Password&action=logmein"; then
_err "GratisDNS login failed for user $GDNSDK_Username bad RC from _post"
return 1
fi
GDNSDK_Cookie="$(grep -A 15 '302 Found' "$HTTP_HEADER" | _egrep_o 'Cookie: [^;]*' | _head_n 1 | cut -d ' ' -f2)"
if [ -z "$GDNSDK_Cookie" ]; then
_err "GratisDNS login failed for user $GDNSDK_Username. Check $HTTP_HEADER file"
return 1
fi
export GDNSDK_Cookie
_saveaccountconf_mutable GDNSDK_Cookie "$GDNSDK_Cookie"
return 0
}
_myget() {
#Adds cookie to request
export _H1="Cookie: $GDNSDK_Cookie"
_result=$(_get "$GDNSDK_API?$1")
}
_mypost() {
#Adds cookie to request
export _H1="Cookie: $GDNSDK_Cookie"
_result=$(_post "$1" "$GDNSDK_API")
}
_get_domain() {
_myget 'action=dns_primarydns'
_domains=$(echo "$_result" | _egrep_o ' domain="[[:alnum:]._-]+' | sed 's/^.*"//')
if [ -z "$_domains" ]; then
_err "Primary domain list not found!"
return 1
fi
for _domain in $_domains; do
if (_endswith "$fulldomain" "$_domain"); then
_debug "Root domain: $_domain"
return 0
fi
done
return 1
}
_successful_update() {
if (echo "$_result" | grep -q 'table-success'); then return 0; fi
return 1
}
_findentry() {
#args $1: fulldomain, $2: txtvalue
#returns id of dns entry, if it exists
_myget "action=dns_primary_changeDNSsetup&user_domain=$_domain"
_debug3 "_result: $_result"
_tmp_result=$(echo "$_result" | tr -d '\n\r' | _egrep_o "<td>$1</td>\s*<td>$2</td>[^?]*[^&]*&id=[^&]*")
_debug _tmp_result "$_tmp_result"
if [ -z "${_tmp_result:-}" ]; then
_debug "The variable is _tmp_result is not supposed to be empty, there may be something wrong with the script"
fi
_id=$(echo "$_tmp_result" | sed 's/^.*=//')
if [ -n "$_id" ]; then
_debug "Entry found with _id=$_id"
return 0
fi
return 1
}