auto update the public IP for the record in dnspod. 自动更新dnspod解析记录的脚本

ddns.sh

#!/bin/sh

# HOST STATUS
hostname=""
public_ip=""

# RECORD STATUS
code=""
value=""
message=""
record_id=""

# CONFIG
LOGIN_TOKEN=""
DOMAIN_ID=""



setHostname() {
    hostname=$(hostname -s)
    echo 'HOST STATUS: hostname='$hostname
}

setPublicIp() {
    public_ip=$(curl -s http://ns1.dnspod.net:6666)
    echo 'HOST STATUS: public_ip='$public_ip
}

createRecord(){
    echo 'RECORD STATUS: create '"$hostname"'.grepcode.cn'
    ret=$(curl -sX POST https://dnsapi.cn/Record.Create -d "login_token="$LOGIN_TOKEN"&format=json&domain_id="$DOMAIN_ID"&sub_domain="$hostname"&record_line_id=0&record_type=A&value="$public_ip)
    code=$(echo $ret|perl -pe 's/.*(?<="code":")(\d+).*/\1/g')
    message=$(echo $ret|perl -pe 's/.*(?<="message":")([\w ]*).*/\1/g')
    if [ "$code" -eq 1 ];
    then
        echo "RECORD STATUS: create succ, "$message
    else
        echo "RECORD STATUS: create fail, "$message
    fi
}

updateRecord(){
    echo 'UPDATE RECORD: start'
    ret=$(curl -sX POST https://dnsapi.cn/Record.Modify -d "login_token="$LOGIN_TOKEN"&format=json&domain_id="$DOMAIN_ID"&sub_domain="$hostname"&record_id="$record_id"&record_line_id=0&record_type=A&value="$public_ip)
    code=$(echo $ret|perl -pe 's/.*(?<="code":")(\d+).*/\1/g')
    message=$(echo $ret|perl -pe 's/.*(?<="message":")([\w ]*).*/\1/g')
    if [ "$code" -eq 1 ];
    then
        echo "RECORD STATUS: update succ, "$message
        return 0
    else
        echo "RECORD STATUS: update fail, "$message
        return $code
    fi
}

keepRecord() {
    echo "RECORD STATUS: init"
    record=$(curl -sX POST https://dnsapi.cn/Record.List -d "login_token="$LOGIN_TOKEN"&domain_id="$DOMAIN_ID"&sub_domain="$hostname"&format=json")
    code=$(echo $record|perl -pe 's/.*(?<="code":")(\d+).*/\1/g')
    message=$(echo $record|perl -pe 's/.*(?<="message":")([\w ]*).*/\1/g')
    if [ "$code" -eq 10 ];
    then
        echo "RECORD STATUS: init fail, "$message
        createRecord
    elif [ "$code" -eq 1 ]
    then
        echo "RECORD STATUS: init succ, "$message
        value=$(echo $record|perl -pe 's/.*(?<="value":")([\w|.]*).*/\1/g')
        record_id=$(echo $record|perl -pe 's/.*(?<="id":")(\d+).*/\1/g')
        echo $record_id
        echo "RECORD STATUS: host="$hostname'.grepcode.cn'
        echo "RECORD STATUS: value="$value
        if [ "$value" != "$public_ip" ];
        then
            echo "RECORD STATUS: DIRTY"
            updateRecord
        else
            echo "RECORD STATUS: OK"
            return 0
        fi
    else
        echo 'Unknown code: '$code
        echo 'Error message: '$message
    fi
}

setHostname
setPublicIp
keepRecord