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Merge pull request #2942 from gassan/dns-hetzner
Added dnsapi/dns_hetzner.sh
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neil
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252
dnsapi/dns_hetzner.sh
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252
dnsapi/dns_hetzner.sh
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#!/usr/bin/env sh
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#
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#HETZNER_Token="sdfsdfsdfljlbjkljlkjsdfoiwje"
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#
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HETZNER_Api="https://dns.hetzner.com/api/v1"
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######## Public functions #####################
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# Usage: add _acme-challenge.www.domain.com "XKrxpRBosdIKFzxW_CT3KLZNf6q0HG9i01zxXp5CPBs"
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# Used to add txt record
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# Ref: https://dns.hetzner.com/api-docs/
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dns_hetzner_add() {
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full_domain=$1
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txt_value=$2
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HETZNER_Token="${HETZNER_Token:-$(_readaccountconf_mutable HETZNER_Token)}"
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if [ -z "$HETZNER_Token" ]; then
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HETZNER_Token=""
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_err "You didn't specify a Hetzner api token."
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_err "You can get yours from here https://dns.hetzner.com/settings/api-token."
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return 1
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fi
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#save the api key and email to the account conf file.
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_saveaccountconf_mutable HETZNER_Token "$HETZNER_Token"
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_debug "First detect the root zone"
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if ! _get_root "$full_domain"; then
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_err "Invalid domain"
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return 1
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fi
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_debug _domain_id "$_domain_id"
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_debug _sub_domain "$_sub_domain"
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_debug _domain "$_domain"
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_debug "Getting TXT records"
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if ! _find_record "$_sub_domain" "$txt_value"; then
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return 1
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fi
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if [ -z "$_record_id" ]; then
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_info "Adding record"
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if _hetzner_rest POST "records" "{\"zone_id\":\"${HETZNER_Zone_ID}\",\"type\":\"TXT\",\"name\":\"$_sub_domain\",\"value\":\"$txt_value\",\"ttl\":120}"; then
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if _contains "$response" "$txt_value"; then
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_info "Record added, OK"
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_sleep 2
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return 0
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fi
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fi
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_err "Add txt record error${_response_error}"
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return 1
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else
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_info "Found record id: $_record_id."
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_info "Record found, do nothing."
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return 0
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# we could modify a record, if the names for txt records for *.example.com and example.com would be not the same
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#if _hetzner_rest PUT "records/${_record_id}" "{\"zone_id\":\"${HETZNER_Zone_ID}\",\"type\":\"TXT\",\"name\":\"$full_domain\",\"value\":\"$txt_value\",\"ttl\":120}"; then
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# if _contains "$response" "$txt_value"; then
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# _info "Modified, OK"
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# return 0
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# fi
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#fi
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#_err "Add txt record error (modify)."
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#return 1
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fi
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}
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# Usage: full_domain txt_value
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# Used to remove the txt record after validation
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dns_hetzner_rm() {
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full_domain=$1
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txt_value=$2
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HETZNER_Token="${HETZNER_Token:-$(_readaccountconf_mutable HETZNER_Token)}"
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_debug "First detect the root zone"
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if ! _get_root "$full_domain"; then
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_err "Invalid domain"
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return 1
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fi
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_debug _domain_id "$_domain_id"
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_debug _sub_domain "$_sub_domain"
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_debug _domain "$_domain"
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_debug "Getting TXT records"
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if ! _find_record "$_sub_domain" "$txt_value"; then
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return 1
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fi
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if [ -z "$_record_id" ]; then
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_info "Remove not needed. Record not found."
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else
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if ! _hetzner_rest DELETE "records/$_record_id"; then
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_err "Delete record error${_response_error}"
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return 1
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fi
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_sleep 2
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_info "Record deleted"
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fi
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}
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#################### Private functions below ##################################
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#returns
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# _record_id=a8d58f22d6931bf830eaa0ec6464bf81 if found; or 1 if error
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_find_record() {
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unset _record_id
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_record_name=$1
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_record_value=$2
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if [ -z "$_record_value" ]; then
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_record_value='[^"]*'
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fi
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_debug "Getting all records"
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_hetzner_rest GET "records?zone_id=${_domain_id}"
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if _response_has_error; then
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_err "Error${_response_error}"
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return 1
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else
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_record_id=$(
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echo "$response" \
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| grep -o "{[^\{\}]*\"name\":\"$_record_name\"[^\}]*}" \
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| grep "\"value\":\"$_record_value\"" \
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| while read -r record; do
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# test for type and
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if [ -n "$(echo "$record" | _egrep_o '"type":"TXT"')" ]; then
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echo "$record" | _egrep_o '"id":"[^"]*"' | cut -d : -f 2 | tr -d \"
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break
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fi
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done
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)
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fi
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}
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#_acme-challenge.www.domain.com
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#returns
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# _sub_domain=_acme-challenge.www
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# _domain=domain.com
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# _domain_id=sdjkglgdfewsdfg
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_get_root() {
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domain=$1
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i=1
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p=1
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domain_without_acme=$(echo "$domain" | cut -d . -f 2-)
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domain_param_name=$(echo "HETZNER_Zone_ID_for_${domain_without_acme}" | sed 's/[\.\-]/_/g')
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_debug "Reading zone_id for '$domain_without_acme' from config..."
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HETZNER_Zone_ID=$(_readdomainconf "$domain_param_name")
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if [ "$HETZNER_Zone_ID" ]; then
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_debug "Found, using: $HETZNER_Zone_ID"
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if ! _hetzner_rest GET "zones/${HETZNER_Zone_ID}"; then
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_debug "Zone with id '$HETZNER_Zone_ID' not exists."
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_cleardomainconf "$domain_param_name"
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unset HETZNER_Zone_ID
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else
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if _contains "$response" "\"id\":\"$HETZNER_Zone_ID\""; then
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_domain=$(printf "%s\n" "$response" | _egrep_o '"name":"[^"]*"' | cut -d : -f 2 | tr -d \" | head -n 1)
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if [ "$_domain" ]; then
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_cut_length=$((${#domain} - ${#_domain} - 1))
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_sub_domain=$(printf "%s" "$domain" | cut -c "1-$_cut_length")
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_domain_id="$HETZNER_Zone_ID"
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return 0
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else
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return 1
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fi
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else
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return 1
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fi
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fi
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fi
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_debug "Trying to get zone id by domain name for '$domain_without_acme'."
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while true; do
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h=$(printf "%s" "$domain" | cut -d . -f $i-100)
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if [ -z "$h" ]; then
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#not valid
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return 1
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fi
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_debug h "$h"
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_hetzner_rest GET "zones?name=$h"
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if _contains "$response" "\"name\":\"$h\"" || _contains "$response" '"total_entries":1'; then
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_domain_id=$(echo "$response" | _egrep_o "\[.\"id\":\"[^\"]*\"" | _head_n 1 | cut -d : -f 2 | tr -d \")
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if [ "$_domain_id" ]; then
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_sub_domain=$(printf "%s" "$domain" | cut -d . -f 1-$p)
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_domain=$h
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HETZNER_Zone_ID=$_domain_id
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_savedomainconf "$domain_param_name" "$HETZNER_Zone_ID"
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return 0
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fi
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return 1
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fi
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p=$i
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i=$(_math "$i" + 1)
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done
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return 1
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}
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#returns
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# _response_error
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_response_has_error() {
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unset _response_error
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err_part="$(echo "$response" | _egrep_o '"error":{[^}]*}')"
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if [ -n "$err_part" ]; then
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err_code=$(echo "$err_part" | _egrep_o '"code":[0-9]+' | cut -d : -f 2)
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err_message=$(echo "$err_part" | _egrep_o '"message":"[^"]+"' | cut -d : -f 2 | tr -d \")
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if [ -n "$err_code" ] && [ -n "$err_message" ]; then
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_response_error=" - message: ${err_message}, code: ${err_code}"
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return 0
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fi
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fi
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return 1
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}
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#returns
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# response
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_hetzner_rest() {
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m=$1
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ep="$2"
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data="$3"
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_debug "$ep"
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key_trimmed=$(echo "$HETZNER_Token" | tr -d \")
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export _H1="Content-TType: application/json"
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export _H2="Auth-API-Token: $key_trimmed"
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if [ "$m" != "GET" ]; then
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_debug data "$data"
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response="$(_post "$data" "$HETZNER_Api/$ep" "" "$m")"
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else
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response="$(_get "$HETZNER_Api/$ep")"
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fi
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if [ "$?" != "0" ] || _response_has_error; then
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_debug "Error$_response_error"
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return 1
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fi
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_debug2 response "$response"
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return 0
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}
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