From 27f30631ed48636a02aeb4cbe67de8a68e0e3615 Mon Sep 17 00:00:00 2001
From: Gavin Leo <trulyliu@gmail.com>
Date: Sun, 27 Nov 2022 21:32:20 +0800
Subject: [PATCH] Add gcore dns support.

https://apidocs.gcore.com/dns
---
 dnsapi/dns_gcore.sh | 187 ++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 187 insertions(+)
 create mode 100755 dnsapi/dns_gcore.sh

diff --git a/dnsapi/dns_gcore.sh b/dnsapi/dns_gcore.sh
new file mode 100755
index 00000000..d549a650
--- /dev/null
+++ b/dnsapi/dns_gcore.sh
@@ -0,0 +1,187 @@
+#!/usr/bin/env sh
+
+#
+#GCORE_Key='773$7b7adaf2a2b32bfb1b83787b4ff32a67eb178e3ada1af733e47b1411f2461f7f4fa7ed7138e2772a46124377bad7384b3bb8d87748f87b3f23db4b8bbe41b2bb'
+#
+
+GCORE_Api="https://api.gcorelabs.com/dns/v2"
+GCORE_Doc="https://apidocs.gcore.com/dns"
+
+########  Public functions #####################
+
+#Usage: add  _acme-challenge.www.domain.com   "XKrxpRBosdIKFzxW_CT3KLZNf6q0HG9i01zxXp5CPBs"
+dns_gcore_add() {
+  fulldomain=$1
+  txtvalue=$2
+
+  GCORE_Key="${GCORE_Key:-$(_readaccountconf_mutable GCORE_Key)}"
+
+  if [ -z "$GCORE_Key" ]; then
+    GCORE_Key=""
+    _err "You didn't specify a Gcore api key yet."
+    _err "You can get yours from here $GCORE_Doc"
+    return 1
+  fi
+
+  #save the api key to the account conf file.
+  _saveaccountconf_mutable GCORE_Key "$GCORE_Key"
+
+  _debug "First detect the zone name"
+  if ! _get_root "$fulldomain"; then
+    _err "invalid domain"
+    return 1
+  fi
+  _debug _zone_name "$_zone_name"
+  _debug _sub_domain "$_sub_domain"
+  _debug _domain "$_domain"
+
+  _debug "Getting txt records"
+  _gcore_rest GET "zones/$_zone_name/$fulldomain/TXT"
+  payload=""
+
+  if echo "$response" | grep "record is not found" >/dev/null; then
+    _info "Record doesn't exists"
+    payload="{\"resource_records\":[{\"content\":[\"$txtvalue\"],\"enabled\":true}],\"ttl\":120}"
+  elif echo "$response" | grep "$txtvalue" >/dev/null; then
+    _info "Already exists, OK"
+    return 0
+  elif echo "$response" | tr -d " " | grep \"name\":\""$fulldomain"\",\"type\":\"TXT\" >/dev/null; then
+    _info "Record with mismatch txtvalue, try update it"
+    payload=$(echo "$response" | tr -d " " | sed 's/"updated_at":[0-9]\+,//g' | sed 's/"meta":{}}]}/"meta":{}},{"content":['\""$txtvalue"\"'],"enabled":true}]}/')
+  fi
+
+  # For wildcard cert, the main root domain and the wildcard domain have the same txt subdomain name, so
+  # we can not use updating anymore.
+  #  count=$(printf "%s\n" "$response" | _egrep_o "\"count\":[^,]*" | cut -d : -f 2)
+  #  _debug count "$count"
+  #  if [ "$count" = "0" ]; then
+  _info "Adding record"
+  if _gcore_rest PUT "zones/$_zone_name/$fulldomain/TXT" "$payload"; then
+    if _contains "$response" "$txtvalue"; then
+      _info "Added, OK"
+      return 0
+    elif _contains "$response" "rrset is already exists"; then
+      _info "Already exists, OK"
+      return 0
+    else
+      _err "Add txt record error."
+      return 1
+    fi
+  fi
+  _err "Add txt record error."
+  return 1
+}
+
+#fulldomain txtvalue
+dns_gcore_rm() {
+  fulldomain=$1
+  txtvalue=$2
+
+  GCORE_Key="${GCORE_Key:-$(_readaccountconf_mutable GCORE_Key)}"
+
+  _debug "First detect the root zone"
+  if ! _get_root "$fulldomain"; then
+    _err "invalid domain"
+    return 1
+  fi
+  _debug _zone_name "$_zone_name"
+  _debug _sub_domain "$_sub_domain"
+  _debug _domain "$_domain"
+
+  _debug "Getting txt records"
+  _gcore_rest GET "zones/$_zone_name/$fulldomain/TXT"
+
+  if echo "$response" | grep "record is not found" >/dev/null; then
+    _info "No such txt recrod"
+    return 0
+  fi
+
+  if ! echo "$response" | tr -d " " | grep \"name\":\""$fulldomain"\",\"type\":\"TXT\" >/dev/null; then
+    _err "Error: $response"
+    return 1
+  fi
+
+  if ! echo "$response" | tr -d " " | grep \""$txtvalue"\" >/dev/null; then
+    _info "No such txt recrod"
+    return 0
+  fi
+
+  count="$(echo "$response" | grep -o "content" | wc -l)"
+
+  if [ "$count" = "1" ]; then
+    if ! _gcore_rest DELETE "zones/$_zone_name/$fulldomain/TXT"; then
+      _err "Delete record error. $response"
+      return 1
+    fi
+    return 0
+  fi
+
+  payload="$(echo "$response" | tr -d " " | sed 's/"updated_at":[0-9]\+,//g' | sed 's/{"id":[0-9]\+,"content":\["'"$txtvalue"'"\],"enabled":true,"meta":{}}//' | sed 's/\[,/\[/' | sed 's/,,/,/' | sed 's/,\]/\]/')"
+  if ! _gcore_rest PUT "zones/$_zone_name/$fulldomain/TXT" "$payload"; then
+    _err "Delete record error. $response"
+  fi
+}
+
+####################  Private functions below ##################################
+#_acme-challenge.sub.domain.com
+#returns
+# _sub_domain=_acme-challenge.sub or _acme-challenge
+# _domain=domain.com
+# _zone_name=domain.com or sub.domain.com
+_get_root() {
+  domain=$1
+  i=1
+  p=1
+
+  while true; do
+    h=$(printf "%s" "$domain" | cut -d . -f $i-100)
+    _debug h "$h"
+    if [ -z "$h" ]; then
+      #not valid
+      return 1
+    fi
+
+    if ! _gcore_rest GET "zones/$h"; then
+      return 1
+    fi
+
+    if _contains "$response" "\"name\":\"$h\""; then
+      _zone_name=$h
+      if [ "$_zone_name" ]; then
+        _sub_domain=$(printf "%s" "$domain" | cut -d . -f 1-$p)
+        _domain=$h
+        return 0
+      fi
+      return 1
+    fi
+    p=$i
+    i=$(_math "$i" + 1)
+  done
+  return 1
+}
+
+_gcore_rest() {
+  m=$1
+  ep="$2"
+  data="$3"
+  _debug "$ep"
+
+  key_trimmed=$(echo "$GCORE_Key" | tr -d '"')
+
+  export _H1="Content-Type: application/json"
+  export _H2="Authorization: APIKey $key_trimmed"
+
+  if [ "$m" != "GET" ]; then
+    _debug data "$data"
+    response="$(_post "$data" "$GCORE_Api/$ep" "" "$m")"
+  else
+    response="$(_get "$GCORE_Api/$ep")"
+  fi
+
+  if [ "$?" != "0" ]; then
+    _err "error $ep"
+    return 1
+  fi
+  _debug2 response "$response"
+  return 0
+}