Add DNS API support for aliyun (#410)

* Add DNS API support for aliyun

* Update README.md

* format

* format

* format

* format...

* format...

* format

* format

* fix bug

* fix bug

* code format

* code format

* fix bug

* just ok...

* fix bug

* fix bug

* fix bug

* change "echo" to "printf"

* fix bug

* code format

* fix bug."head -c" in function _ali_nonce not supported by solaris

* fix bug."head -c" in function _ali_nonce not supported by solaris

* format

* fix bug._ali_nonce not work on solaris

* fix bug. _ali_nonce not work on solaris

* fix bug. _ali_nonce not work on solaris

* add aliyun.com to README.md

README.md

@@ -260,6 +260,7 @@ You don't have to do anything manually!
 1. LuaDNS.com API
 1. DNSMadeEasy.com API
 1. nsupdate API
+1. aliyun.com(阿里云) API
 
 **More APIs coming soon...**
 

dnsapi/README.md

@@ -201,7 +201,24 @@ acme.sh --issue --dns dns_aws -d example.com -d www.example.com
 
 The `AWS_ACCESS_KEY_ID` and `AWS_SECRET_ACCESS_KEY` will be saved in `~/.acme.sh/account.conf` and will be reused when needed.
 
-# 11. Use custom API
+## 11. Use Aliyun domain API to automatically issue cert
+
+First you need to login to your Aliyun account to get your API key.
+[https://ak-console.aliyun.com/#/accesskey](https://ak-console.aliyun.com/#/accesskey)
+
+```
+export Ali_Key="sdfsdfsdfljlbjkljlkjsdfoiwje"
+export Ali_Secret="jlsdflanljkljlfdsaklkjflsa"
+```
+
+Ok, let's issue a cert now:
+```
+acme.sh --issue --dns dns_ali -d example.com -d www.example.com
+```
+
+The `Ali_Key` and `Ali_Secret` will be saved in `~/.acme.sh/account.conf` and will be reused when needed.
+
+# 12. Use custom API
 
 If your API is not supported yet, you can write your own DNS API.
 
@@ -218,6 +235,6 @@ acme.sh --issue --dns dns_myapi -d example.com -d www.example.com
 For more details, please check our sample script: [dns_myapi.sh](dns_myapi.sh)
 
 
-## 12. Use lexicon DNS API
+## 13. Use lexicon DNS API
 
 https://github.com/Neilpang/acme.sh/wiki/How-to-use-lexicon-dns-api

dnsapi/dns_ali.sh

@@ -0,0 +1,186 @@
+#!/usr/bin/env sh
+
+Ali_API="https://alidns.aliyuncs.com/"
+
+#Ali_Key="LTqIA87hOKdjevsf5"
+#Ali_Secret="0p5EYueFNq501xnCPzKNbx6K51qPH2"
+
+#Usage: dns_ali_add   _acme-challenge.www.domain.com   "XKrxpRBosdIKFzxW_CT3KLZNf6q0HG9i01zxXp5CPBs"
+dns_ali_add() {
+  fulldomain=$1
+  txtvalue=$2
+
+  if [ -z "$Ali_Key" ] || [ -z "$Ali_Secret" ]; then
+    Ali_Key=""
+    Ali_Secret=""
+    _err "You don't specify aliyun api key and secret yet."
+    return 1
+  fi
+
+  #save the api key and secret to the account conf file.
+  _saveaccountconf Ali_Key "$Ali_Key"
+  _saveaccountconf Ali_Secret "$Ali_Secret"
+
+  _debug "First detect the root zone"
+  if ! _get_root "$fulldomain"; then
+    return 1
+  fi
+
+  _add_record_query "$_domain" "$_sub_domain" "$txtvalue" && _ali_rest "Add record"
+}
+
+dns_ali_rm() {
+  fulldomain=$1
+  _clean
+}
+
+####################  Private functions bellow ##################################
+
+_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 "$h"
+    if ! _ali_rest "Get root" "ignore"; then
+      return 1
+    fi
+
+    if _contains "$response" "PageNumber"; 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 "$i" + 1)
+  done
+  return 1
+}
+
+_ali_rest() {
+  signature=$(printf "%s" "GET&%2F&$(_ali_urlencode "$query")" | _hmac "sha1" "$(_hex "$Ali_Secret&")" | _base64)
+  signature=$(_ali_urlencode "$signature")
+  url="$Ali_API?$query&Signature=$signature"
+
+  if ! response="$(_get "$url")"; then
+    _err "Error <$1>"
+    return 1
+  fi
+
+  if [ -z "$2" ]; then
+    message="$(printf "%s" "$response" | _egrep_o "\"Message\":\"[^\"]*\"" | cut -d : -f 2 | tr -d \")"
+    if [ -n "$message" ]; then
+      _err "$message"
+      return 1
+    fi
+  fi
+
+  _debug2 response "$response"
+  return 0
+}
+
+_ali_urlencode() {
+  _str="$1"
+  _str_len=${#_str}
+  _u_i=1
+  while [ "$_u_i" -le "$_str_len" ]; do
+    _str_c="$(printf "%s" "$_str" | cut -c "$_u_i")"
+    case $_str_c in [a-zA-Z0-9.~_-])
+      printf "%s" "$_str_c"
+      ;;
+    *)
+      printf "%%%02X" "'$_str_c"
+      ;;
+    esac
+    _u_i="$(_math "$_u_i" + 1)"
+  done
+}
+
+_ali_nonce() {
+  #_head_n 1 </dev/urandom | _digest "sha256" hex | cut -c 1-31
+  #Not so good...
+  date +"%s%N"
+}
+
+_check_exist_query() {
+  query=''
+  query=$query'AccessKeyId='$Ali_Key
+  query=$query'&Action=DescribeDomainRecords'
+  query=$query'&DomainName='$1
+  query=$query'&Format=json'
+  query=$query'&RRKeyWord=_acme-challenge'
+  query=$query'&SignatureMethod=HMAC-SHA1'
+  query=$query"&SignatureNonce=$(_ali_nonce)"
+  query=$query'&SignatureVersion=1.0'
+  query=$query'&Timestamp='$(_timestamp)
+  query=$query'&TypeKeyWord=TXT'
+  query=$query'&Version=2015-01-09'
+}
+
+_add_record_query() {
+  query=''
+  query=$query'AccessKeyId='$Ali_Key
+  query=$query'&Action=AddDomainRecord'
+  query=$query'&DomainName='$1
+  query=$query'&Format=json'
+  query=$query'&RR='$2
+  query=$query'&SignatureMethod=HMAC-SHA1'
+  query=$query"&SignatureNonce=$(_ali_nonce)"
+  query=$query'&SignatureVersion=1.0'
+  query=$query'&Timestamp='$(_timestamp)
+  query=$query'&Type=TXT'
+  query=$query'&Value='$3
+  query=$query'&Version=2015-01-09'
+}
+
+_delete_record_query() {
+  query=''
+  query=$query'AccessKeyId='$Ali_Key
+  query=$query'&Action=DeleteDomainRecord'
+  query=$query'&Format=json'
+  query=$query'&RecordId='$1
+  query=$query'&SignatureMethod=HMAC-SHA1'
+  query=$query"&SignatureNonce=$(_ali_nonce)"
+  query=$query'&SignatureVersion=1.0'
+  query=$query'&Timestamp='$(_timestamp)
+  query=$query'&Version=2015-01-09'
+}
+
+_describe_records_query() {
+  query=''
+  query=$query'AccessKeyId='$Ali_Key
+  query=$query'&Action=DescribeDomainRecords'
+  query=$query'&DomainName='$1
+  query=$query'&Format=json'
+  query=$query'&SignatureMethod=HMAC-SHA1'
+  query=$query"&SignatureNonce=$(_ali_nonce)"
+  query=$query'&SignatureVersion=1.0'
+  query=$query'&Timestamp='$(_timestamp)
+  query=$query'&Version=2015-01-09'
+}
+
+_clean() {
+  _check_exist_query "$_domain"
+  if ! _ali_rest "Check exist records" "ignore"; then
+    return 1
+  fi
+
+  records="$(echo "$response" -n | _egrep_o "\"RecordId\":\"[^\"]*\"" | cut -d : -f 2 | tr -d \")"
+  printf "%s" "$records" \
+    | while read -r record_id; do
+      _delete_record_query "$record_id"
+      _ali_rest "Delete record $record_id" "ignore"
+    done
+}
+
+_timestamp() {
+  date -u +"%Y-%m-%dT%H%%3A%M%%3A%SZ"
+}