170 lines
4.2 KiB
Bash
Executable File
170 lines
4.2 KiB
Bash
Executable File
#!/bin/bash
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#written by Michael Qu
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#greennyreborn@gmail.com
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#dnspod api token
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token=`uci get dnspod.base_arg.login_token`
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#域名
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domain=`uci get dnspod.base_arg.main_domain 2>/dev/null`
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#需要更新的子域名，只允许一个
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#由于*linux会被脚本解析为当前目录下的所有文件，所以请填写\*
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# sub_domain='\*'
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sub_domain=`uci get dnspod.base_arg.sub_domain 2>/dev/null`
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if [ $sub_domain = "\*" ]; then
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sub_domain="*"
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fi
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#check for changed ip every 300 seconds
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wait=300
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wait_second=`uci get dnspod.base_arg.wait_second 2>/dev/null`
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if [[ $wait_second =~ ^[1-9][0-9]*$ ]]; then
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wait=$wait_second
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fi
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#外网ip获取命令
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command=`uci get dnspod.base_arg.command_to_get_ip 2>/dev/null`
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if [ -z "$command" ]; then
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command='curl -s whatismyip.akamai.com'
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fi
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#检查curl是否安装
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curl_status=`which curl 2>/dev/null`
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[ -n "$curl_status" ] || { echo "curl is not installed";exit 3; }
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os=$(uname -a | egrep -io 'openwrt' | tr [A-Z] [a-z])
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API_url="https://dnsapi.cn"
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LOG_FILE="/tmp/dnspod.log"
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MAX_LOG_SIZE=`expr 1 * 1024 * 1024` # 默认最大限制1M
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PROGRAM=$(basename $0)
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format='json'
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lang='en'
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record_type='A'
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common_options="login_token=$token&format=${format}&lang=${lang}"
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is_svc=0
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last_modified_ip=
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getFileSize() {
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local file=$1
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wc -c $file | awk '{print $1}'
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}
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clearLog() {
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local file_size=$(getFileSize $LOG_FILE)
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if [ $file_size -gt $MAX_LOG_SIZE ]; then
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echo "" > $LOG_FILE
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printMsg "Log file [$LOG_FILE], size: [$file_size bytes]."
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printMsg "Exceeds max log size [$MAX_LOG_SIZE]. Clear the log."
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fi
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}
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printMsg() {
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local time=$(date "+%Y-%m-%d %H:%M:%S")
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local msg="$1"
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if [ $is_svc -eq 1 ]; then
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echo "$time: $msg" >> $LOG_FILE
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# logger -t ${PROGRAM} "${msg}"
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else
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echo "$time: $msg"
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fi
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}
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getIp() {
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# curl -s http://checkip.dyndns.com | sed -n 's/.*: \([0-9]\{1,3\}\.[0-9]\{1,3\}\.[0-9]\{1,3\}\.[0-9]\{1,3\}\).*/\1/p'
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eval $command
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}
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execAPI() {
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local action="$1"
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local extra_options="$2"
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eval "curl -k -X POST \"${API_url}/${action}\" -d \"${common_options}&${extra_options}\""
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}
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getRecordList() {
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local extra_options="domain=$domain"
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echo $(execAPI "Record.List" "$extra_options")
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exit
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}
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updateRecord() {
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local ip=$1
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local record_list=`getRecordList`
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local old_ip=`jsonfilter -s "$record_list" -e "@.records[@.name='$sub_domain'].value"`
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local id=`jsonfilter -s "$record_list" -e "@.records[@.name='$sub_domain'].id"`
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printMsg "Change record: $sub_domain.$domain from $old_ip to $ip"
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local extra_options="domain=$domain&record_id=$id&value=$ip&record_type=A&record_line_id=0&sub_domain=$sub_domain"
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local response=$(execAPI "Record.Modify" "$extra_options")
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local code=`jsonfilter -s "$response" -e "@.status.code"`
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if [ "$code" == "1" ]; then
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last_modified_ip=$ip
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fi
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local message=`jsonfilter -s "$response" -e "@.status.message"`
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printMsg "response: $message"
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}
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checkip() {
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local wan_ip=$1
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printMsg "old ip: [$last_modified_ip], new ip: [$wan_ip]"
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if [ "$wan_ip" != "$last_modified_ip" ]; then
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return 8
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else
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return 3
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fi
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}
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execSvc() {
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local ip
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#check that whether the network is ok
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while [ 1 ];do
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ip=$(getIp)
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if [ -n "$ip" ]; then
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printMsg "WAN IP: ${ip}"
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break;
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else
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printMsg "Can't get wan ip"
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sleep 30
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fi
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done
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while [ 1 ];do
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clearLog
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ip=$(getIp)
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checkip $ip
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if [ $? -eq 8 ]; then
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updateRecord $ip
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#updateTunnelBroker
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fi
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sleep $wait
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done
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}
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execUpdate() {
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local ip=`getIp`
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printMsg "WAN IP: ${ip}"
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updateRecord $ip
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}
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case $1 in
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--svc)
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is_svc=1;
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clearLog;
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printMsg "Start in Service mode, check in every $wait seconds";
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printMsg "domain: ${domain}, sub_domain: ${sub_domain}";
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printMsg "Use command: [$command] to get wan ip";
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execSvc;;
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*)
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is_svc=0;
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printMsg "Start update record, domain: ${domain}, sub_domain: ${sub_domain}";
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printMsg "Use command: [$command] to get wan ip";
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execUpdate;;
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esac
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