From 29a2920a2c585488ba1f81f9d459d86aab951f9e Mon Sep 17 00:00:00 2001
From: KincaidYang <91786638+KincaidYang@users.noreply.github.com>
Date: Sat, 2 Sep 2023 14:49:43 +0800
Subject: [PATCH] Add dns_tencent.sh

Adapt to Tencent Cloud (DNSPod) API 3.0
---
 dnsapi/dns_tencent.sh | 201 ++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 201 insertions(+)
 create mode 100644 dnsapi/dns_tencent.sh

diff --git a/dnsapi/dns_tencent.sh b/dnsapi/dns_tencent.sh
new file mode 100644
index 00000000..30e33f03
--- /dev/null
+++ b/dnsapi/dns_tencent.sh
@@ -0,0 +1,201 @@
+#!/usr/bin/env sh
+set -x
+Tencent_API="https://dnspod.tencentcloudapi.com"
+
+#Tencent_SecretId="AKIDz8krbsJ5yKBZQpn74WFkmLPx3gnPhESA"
+#Tencent_SecretKey="Gu5t9xGARNpq86cd98joQYCN3Cozk1qA"
+
+#Usage: dns_tencent_add   _acme-challenge.www.domain.com   "XKrxpRBosdIKFzxW_CT3KLZNf6q0HG9i01zxXp5CPBs"
+dns_tencent_add() {
+  fulldomain=$1
+  txtvalue=$2
+
+  Tencent_SecretId="${Tencent_SecretId:-$(_readaccountconf_mutable Tencent_SecretId)}"
+  Tencent_SecretKey="${Tencent_SecretKey:-$(_readaccountconf_mutable Tencent_SecretKey)}"
+  if [ -z "$Tencent_SecretId" ] || [ -z "$Tencent_SecretKey" ]; then
+    Tencent_SecretId=""
+    Tencent_SecretKey=""
+    _err "You don't specify tencent api SecretId and SecretKey yet."
+    return 1
+  fi
+
+  #save the api SecretId and SecretKey to the account conf file.
+  _saveaccountconf_mutable Tencent_SecretId "$Tencent_SecretId"
+  _saveaccountconf_mutable Tencent_SecretKey "$Tencent_SecretKey"
+
+  _debug "First detect the root zone"
+  if ! _get_root "$fulldomain"; then
+    return 1
+  fi
+
+  _debug "Add record"
+  _add_record_query "$_domain" "$_sub_domain" "$txtvalue" && _tencent_rest "CreateRecord"
+}
+
+dns_tencent_rm() {
+  fulldomain=$1
+  txtvalue=$2
+  Tencent_SecretId="${Tencent_SecretId:-$(_readaccountconf_mutable Tencent_SecretId)}"
+  Tencent_SecretKey="${Tencent_SecretKey:-$(_readaccountconf_mutable Tencent_SecretKey)}"
+
+  _debug "First detect the root zone"
+  if ! _get_root "$fulldomain"; then
+    return 1
+  fi
+
+  _debug "Get record list"
+  sleep 30
+  _check_exist_query "$_domain" "$_sub_domain" "$txtvalue" && _tencent_rest "DescribeRecordFilterList"
+
+  record_id="$(echo "$response" | _egrep_o "\"RecordId\":\s*[0-9]+" | _egrep_o "[0-9]+")"
+  _debug2 record_id "$record_id"
+
+  if [ -z "$record_id" ]; then
+    _debug "record not found, skip"
+  else
+    _debug "Delete record"
+    _delete_record_query "$record_id" && _tencent_rest "DeleteRecord"
+  fi
+}
+
+####################  Private functions below ##################################
+
+_get_root() {
+  domain=$1
+  i=2
+  p=1
+  while true; do
+    h=$(printf "%s" "$domain" | cut -d . -f "$i"-100)
+    if [ -z "$h" ]; then
+      #not valid
+      return 1
+    fi
+
+    _describe_records_query "$h" "@"
+    if ! _tencent_rest "DescribeRecordList" "ignore"; then
+      return 1
+    fi
+
+    if _contains "$response" "\"TotalCount\":"; then
+      _sub_domain=$(printf "%s" "$domain" | cut -d . -f 1-"$p")
+      _debug _sub_domain "$_sub_domain"
+      _domain="$h"
+      _debug _domain "$_domain"
+      return 0
+    fi
+    p="$i"
+    i=$(_math "$i" + 1)
+  done
+  return 1
+}
+
+_tencent_rest() {
+  action=$1
+  service="dnspod"
+  payload="${query}"
+  timestamp=$(date -u +%s)
+
+  token=$(tencent_signature_v3 $service "$action" "$payload" "$timestamp")
+  version="2021-03-23"
+
+  if ! response="$(tencent_api_request $service $version "$action" "$payload" "$timestamp")"; then
+    _err "Error <$1>"
+    return 1
+  fi
+
+  _debug2 response "$response"
+  if [ -z "$2" ]; then
+    message="$(echo "$response" | _egrep_o "\"Message\":\"[^\"]*\"" | cut -d : -f 2 | tr -d \")"
+    if [ "$message" ]; then
+      _err "$message"
+      return 1
+    fi
+  fi
+}
+
+_add_record_query() {
+  query="{\"Domain\":\"$1\",\"SubDomain\":\"$2\",\"RecordType\":\"TXT\",\"RecordLineId\":\"0\",\"RecordLine\":\"0\",\"Value\":\"$3\",\"TTL\":600}"
+}
+
+_describe_records_query() {
+  query="{\"Domain\":\"$1\",\"Limit\":3000}"
+}
+
+_delete_record_query() {
+  query="{\"Domain\":\"$_domain\",\"RecordId\":$1}"
+}
+
+_check_exist_query() {
+  _domain="$1"
+  _subdomain="$2"
+  _value="$3"
+  query="{\"Domain\":\"$_domain\",\"SubDomain\":\"$_subdomain\",\"RecordValue\":\"$_value\"}"
+}
+
+# shell client for tencent cloud api v3 | @author: rehiy
+
+tencent_sha256() {
+  printf %b "$@" | openssl dgst -sha256 -hex | sed 's/^.* //'
+}
+
+tencent_hmac_sha256() {
+  k=$1
+  shift
+  printf %b "$@" | openssl dgst -sha256 -hmac "$k" | sed 's/^.* //'
+}
+
+tencent_hmac_sha256_hexkey() {
+  k=$1
+  shift
+  printf %b "$@" | openssl dgst -sha256 -mac HMAC -macopt "hexkey:$k" | sed 's/^.* //'
+}
+
+tencent_signature_v3() {
+  service=$1
+  action=$(echo "$2" | tr '[:upper:]' '[:lower:]')
+  payload=${3:-'{}'}
+  timestamp=${4:-$(date +%s)}
+
+  domain="$service.tencentcloudapi.com"
+  secretId=${Tencent_SecretId:-'tencent-cloud-secret-id'}
+  secretKey=${Tencent_SecretKey:-'tencent-cloud-secret-key'}
+
+  algorithm='TC3-HMAC-SHA256'
+  date=$(date -u -d "@$timestamp" +%Y-%m-%d 2>/dev/null)
+  [ -z "$date" ] && date=$(date -u -r "$timestamp" +%Y-%m-%d)
+
+  canonicalUri='/'
+  canonicalQuery=''
+  canonicalHeaders="content-type:application/json\nhost:$domain\nx-tc-action:$action\n"
+
+  signedHeaders='content-type;host;x-tc-action'
+  canonicalRequest="POST\n$canonicalUri\n$canonicalQuery\n$canonicalHeaders\n$signedHeaders\n$(tencent_sha256 "$payload")"
+
+  credentialScope="$date/$service/tc3_request"
+  stringToSign="$algorithm\n$timestamp\n$credentialScope\n$(tencent_sha256 "$canonicalRequest")"
+
+  secretDate=$(tencent_hmac_sha256 "TC3$secretKey" "$date")
+  secretService=$(tencent_hmac_sha256_hexkey "$secretDate" "$service")
+  secretSigning=$(tencent_hmac_sha256_hexkey "$secretService" 'tc3_request')
+  signature=$(tencent_hmac_sha256_hexkey "$secretSigning" "$stringToSign")
+
+  echo "$algorithm Credential=$secretId/$credentialScope, SignedHeaders=$signedHeaders, Signature=$signature"
+}
+
+tencent_api_request() {
+  service=$1
+  version=$2
+  action=$3
+  payload=${4:-'{}'}
+  timestamp=${5:-$(date +%s)}
+
+  token=$(tencent_signature_v3 "$service" "$action" "$payload" "$timestamp")
+
+  _H1="Content-Type: application/json"
+  _H2="Authorization: $token"
+  _H3="X-TC-Version: $version"
+  _H4="X-TC-Timestamp: $timestamp"
+  _H5="X-TC-Action: $action"
+
+  _post "$payload" "$Tencent_API" "" "POST" "application/json"
+}