DynuIPRefresher

A lightweight C++ application to setup a service for refreshing a dynamic IP to the Dynu servers. Dynu.com is a free DDns service and provides an API.

Installation

Download the latest Release at Release_Page. I'm providing executables for Debian/Ubuntu (.deb) and RHEL/Debian (.rpm). But you can still compile the code my your own (see build section).

Configuration

There is a configuration file /etc/iprefresher.cfg where you have to specify the DYNU API key (get it from their homepage), the domainid and your domain. Furthermore, you can optionally specify a Telegram API key and a Chat ID if you want to be notfied when your local ip changes.

To enable and start the service: systemctl enable iprefresher.service and systemctl start iprefresher.service

Build

Basic Build

Download source files

git clone https://github.com/Lukas-Heiligenbrunner/DynuIPRefresher.git

install build dependencies

libcurl libconfig

Debian:

apt install libcurl4-openssl-dev

Fedora:

dnf install libcurl-devel libconfig-devel

Alpine Linux:

Compiler dependencies:

apk add make cmake g++

Lib dependencies:

apk add libcurl curl-dev libconfig libconfig-dev

Packaging dependencies:

apk add dpkg rpm

dependencies for package build

dpkg --> debian/ubuntu package

rpmbuild --> Fedora/RedHat/CentOS package

cmake project

cd into downloaded files and Generate makefiles:

cmake -S . -B build

compile project

make

[root] install it to the system

make install

(optional) create Linux packages

make package

Windows cross build

Set Winbuild flag in CMakeList.txt.

Dependencies:

• MinGW Compiler
• MinGW-libcurl
• MinGW-libconfig++

Optional dependencies

• NSIS Pack tool (for creating installer)
• doxygen (for generating html doc)

Some addition configuration of lib paths may be needed in CMakeList.txt. make package will pack it into a NSIS installer for Windows.