docs(readme): fix linting error

See [release notes](https://github.com/qdm12/godevcontainer/releases/tag/v0.21.0)

Notably:
- Go upgraded from 1.23 to 1.25
- golangci-lint upgraded to v2.4.0
- Alpine upgraded from 3.20 to 3.22
- Disable package comment requirement by gopls' staticcheck
- Pull container image from ghcr.io

.devcontainer/Dockerfile

@@ -1 +1 @@
-FROM qmcgaw/godevcontainer
+FROM qmcgaw/godevcontainer:v0.21-alpine

.devcontainer/README.md

@@ -2,60 +2,52 @@
 
 Development container that can be used with VSCode.
 
-It works on Linux, Windows and OSX.
+It works on Linux, Windows (WSL2) and OSX.
 
 ## Requirements
 
 - [VS code](https://code.visualstudio.com/download) installed
-- [VS code remote containers extension](https://marketplace.visualstudio.com/items?itemName=ms-vscode-remote.remote-containers) installed
+- [VS code dev containers extension](https://marketplace.visualstudio.com/items?itemName=ms-vscode-remote.remote-containers) installed
 - [Docker](https://www.docker.com/products/docker-desktop) installed and running
 - [Docker Compose](https://docs.docker.com/compose/install/) installed
 
 ## Setup
 
-1. Create the following files on your host if you don't have them:
+1. Create the following files and directory on your host if you don't have them:
 
     ```sh
     touch ~/.gitconfig ~/.zsh_history
+    mkdir -p ~/.ssh
     ```
 
-    Note that the development container will create the empty directories `~/.docker`, `~/.ssh` and `~/.kube` if you don't have them.
-
-1. **For Docker on OSX or Windows without WSL**: ensure your home directory `~` is accessible by Docker.
+1. **For OSX hosts**: ensure the project directory and your home directory `~` are accessible by Docker.
 1. Open the command palette in Visual Studio Code (CTRL+SHIFT+P).
-1. Select `Remote-Containers: Open Folder in Container...` and choose the project directory.
+1. Select `Dev-Containers: Open Folder in Container...` and choose the project directory.
 
 ## Customization
 
-### Customize the image
+For any customization to take effect, you should "rebuild and reopen":
 
-You can make changes to the [Dockerfile](Dockerfile) and then rebuild the image. For example, your Dockerfile could be:
+1. Open the command palette in Visual Studio Code (CTRL+SHIFT+P)
+2. Select `Dev-Containers: Rebuild Container`
 
-```Dockerfile
-FROM qmcgaw/godevcontainer
-RUN apk add curl
-```
+Changes you can make are notably:
 
-To rebuild the image, either:
+- Changes to the Docker image in [Dockerfile](Dockerfile)
+- Changes to VSCode **settings** and **extensions** in [devcontainer.json](devcontainer.json).
+- Change the entrypoint script by adding a bind mount in [devcontainer.json](devcontainer.json) of a shell script to `/root/.welcome.sh` to replace the [current welcome script](https://github.com/qdm12/godevcontainer/blob/master/shell/.welcome.sh). For example:
 
-- With VSCode through the command palette, select `Remote-Containers: Rebuild and reopen in container`
-- With a terminal, go to this directory and `docker-compose build`
+    ```json
+    // Welcome script
+    {
+        "source": "/yourpath/.welcome.sh",
+        "target": "/root/.welcome.sh",
+        "type": "bind"
+    },
+    ```
 
-### Customize VS code settings
-
-You can customize **settings** and **extensions** in the [devcontainer.json](devcontainer.json) definition file.
-
-### Entrypoint script
-
-You can bind mount a shell script to `/root/.welcome.sh` to replace the [current welcome script](shell/.welcome.sh).
-
-### Publish a port
-
-To access a port from your host to your development container, publish a port in [docker-compose.yml](docker-compose.yml). You can also now do it directly with VSCode without restarting the container.
-
-### Run other services
-
-1. Modify [docker-compose.yml](docker-compose.yml) to launch other services at the same time as this development container, such as a test database:
+- Change the `vscode` service container configuration either in [docker-compose.yml](docker-compose.yml) or in [devcontainer.json](devcontainer.json).
+- Add other services in [docker-compose.yml](docker-compose.yml) to run together with the development VSCode service container. For example to add a test database:
 
     ```yml
       database:
@@ -65,5 +57,4 @@ To access a port from your host to your development container, publish a port in
           POSTGRES_PASSWORD: password
     ```
 
-1. In [devcontainer.json](devcontainer.json), change the line `"runServices": ["vscode"],` to `"runServices": ["vscode", "database"],`.
-1. In the VS code command palette, rebuild the container.
+- More options are documented in the [devcontainer.json reference](https://containers.dev/implementors/json_reference/).

.devcontainer/devcontainer.json

@@ -1,16 +1,51 @@
 {
+    // See https://containers.dev/implementors/json_reference/
+    // User defined settings
+    "containerEnv": {
+        "TZ": ""
+    },
+    // Fixed settings
     "name": "ddns-dev",
-    "dockerComposeFile": [
-        "docker-compose.yml"
-    ],
-    "service": "vscode",
-    "runServices": [
-        "vscode"
-    ],
-    "shutdownAction": "stopCompose",
     "postCreateCommand": "~/.windows.sh && go mod download && go mod tidy",
+    "dockerComposeFile": "docker-compose.yml",
+    "overrideCommand": true,
+    "service": "vscode",
     "workspaceFolder": "/workspace",
-    // "overrideCommand": "",
+    "mounts": [
+        // Source code
+        {
+            "source": "../",
+            "target": "/workspace",
+            "type": "bind"
+        },
+        // Zsh commands history persistence
+        {
+            "source": "${localEnv:HOME}/.zsh_history",
+            "target": "/root/.zsh_history",
+            "type": "bind"
+        },
+        // Git configuration file
+        {
+            "source": "${localEnv:HOME}/.gitconfig",
+            "target": "/root/.gitconfig",
+            "type": "bind"
+        },
+        // SSH directory for Linux, OSX and WSL
+        // On Linux and OSX, a symlink /mnt/ssh <-> ~/.ssh is
+        // created in the container. On Windows, files are copied
+        // from /mnt/ssh to ~/.ssh to fix permissions.
+        {
+            "source": "${localEnv:HOME}/.ssh",
+            "target": "/mnt/ssh",
+            "type": "bind"
+        },
+        // Docker socket to access the host Docker server
+        {
+            "source": "/var/run/docker.sock",
+            "target": "/var/run/docker.sock",
+            "type": "bind"
+        }
+    ],
     "customizations": {
         "vscode": {
             "extensions": [
@@ -58,12 +93,16 @@
                 "go.lintOnSave": "package",
                 "[go]": {
                     "editor.codeActionsOnSave": {
-                        "source.organizeImports": true
+                        "source.organizeImports": "always"
                     }
                 },
                 "gopls": {
+                    "formatting.gofumpt": true,
                     "usePlaceholders": false,
                     "staticcheck": true,
+                    "ui.diagnostic.analyses": {
+                        "ST1000": false
+                    },
                     "vulncheck": "Imports"
                 },
                 "remote.extensionKind": {

.devcontainer/docker-compose.yml

@@ -1,27 +1,3 @@
-version: "3.7"
-
 services:
   vscode:
     build: .
-    volumes:
-      - ../:/workspace
-      # Docker socket to access Docker server
-      - /var/run/docker.sock:/var/run/docker.sock
-      # SSH directory for Linux, OSX and WSL
-      # On Linux and OSX, a symlink /mnt/ssh <-> ~/.ssh is
-      # created in the container. On Windows, files are copied
-      # from /mnt/ssh to ~/.ssh to fix permissions.
-      - ~/.ssh:/mnt/ssh
-      # Shell history persistence
-      - ~/.zsh_history:/root/.zsh_history
-      # Git config
-      - ~/.gitconfig:/root/.gitconfig
-    environment:
-      - TZ=
-    cap_add:
-      # For debugging with dlv
-      - SYS_PTRACE
-    security_opt:
-      # For debugging with dlv
-      - seccomp:unconfined
-    entrypoint: [ "zsh", "-c", "while sleep 1000; do :; done" ]

.dockerignore

@@ -4,9 +4,9 @@
 .vscode
 docs
 readme
+!readme/*.go
 .gitignore
 config.json
 docker-compose.yml
 LICENSE
-README.md
 ui/favicon.svg

.github/CONTRIBUTING.md

@@ -1,17 +1,92 @@
 # Contributing
 
-Contributions are [released](https://help.github.com/articles/github-terms-of-service/#6-contributions-under-repository-license) to the public under the [open source license of this project](../LICENSE).
+## Table of content
+
+1. [Submitting a pull request](#submitting-a-pull-request)
+1. [Development setup](#development-setup)
+1. [Commands available](#commands-available)
+1. [Add a new DNS provider](#add-a-new-dns-provider)
+1. [License](#license)
 
 ## Submitting a pull request
 
 1. [Fork](https://github.com/qdm12/ddns-updater/fork) and clone the repository
 1. Create a new branch `git checkout -b my-branch-name`
 1. Modify the code
-1. Ensure the docker build succeeds `docker build .`
 1. Commit your modifications
 1. Push to your fork and [submit a pull request](https://github.com/qdm12/ddns-updater/compare)
 
-## Resources
+Additional resources:
 
 - [Using Pull Requests](https://help.github.com/articles/about-pull-requests/)
 - [How to Contribute to Open Source](https://opensource.guide/how-to-contribute/)
+
+## Development setup
+
+### Using VSCode and Docker
+
+That should be easier and better than a local setup, although it might use more memory if you're not on Linux.
+
+1. Install [Docker](https://docs.docker.com/install/)
+    - On Windows, share a drive with Docker Desktop and have the project on that partition
+    - On OSX, share your project directory with Docker Desktop
+1. With [Visual Studio Code](https://code.visualstudio.com/download), install the [dev containers extension](https://marketplace.visualstudio.com/items?itemName=ms-vscode-remote.remote-containers)
+1. In Visual Studio Code, press on `F1` and select `Dev Containers: Open Folder in Container...`
+1. Your dev environment is ready to go!... and it's running in a container :+1:
+
+### Locally
+
+Install [Go](https://golang.org/dl/), [Docker](https://www.docker.com/products/docker-desktop) and [Git](https://git-scm.com/downloads); then:
+
+```sh
+go mod download
+```
+
+And finally install [golangci-lint](https://github.com/golangci/golangci-lint#install).
+
+You might want to use an editor such as [Visual Studio Code](https://code.visualstudio.com/download) with the [Go extension](https://code.visualstudio.com/docs/languages/go).
+
+## Commands available
+
+- Test the code: `go test ./...`
+- Lint the code `golangci-lint run`
+- Build the program: `go build -o app cmd/ddns-updater/main.go`
+- Build the Docker image (tests and lint included): `docker build -t ghcr.io/qdm12/ddns-updater .`
+- Run the Docker container: `docker run -it --rm -v /yourpath/data:/updater/data ghcr.io/qdm12/ddns-updater`
+
+## Add a new DNS provider
+
+An "example" DNS provider is present in the code, you can simply copy paste it modify it to your needs.
+In more detailed steps:
+
+1. Copy the directory [`internal/provider/providers/example`](../internal/provider/providers/example) to `internal/provider/providers/yourprovider` where `yourprovider` is the name of the DNS provider you want to add, in a single word without spaces, dashes or underscores.
+1. Modify the `internal/provider/providers/yourprovider/provider.go` file to fit the requirements of your DNS provider. There are many `// TODO` comments you can follow and **need to remove** when done.
+1. Add the provider name constant to the `ProviderChoices` function in [`internal/provider/constants/providers.go`](../internal/provider/constants/providers.go). For example:
+
+    ```go
+    func ProviderChoices() []models.Provider {
+      return []models.Provider{
+        // ...
+        Example,
+        // ...
+      }
+    }
+    ```
+
+1. Add a case for your provider in the `switch` statement in the `New` function in [`internal/provider/provider.go`](../internal/provider/provider.go). For example:
+
+    ```go
+    case constants.Example:
+      return example.New(data, domain, owner, ipVersion, ipv6Suffix)
+    ```
+
+1. Copy the file [`docs/example.md`](../docs/example.md) to `docs/yourprovider.md` and modify it to fit the configuration and domain setup of your DNS provider. There are a few `<!-- ... -->` comments indicating what to change, please **remove them** when done.
+1. In the [README.md](../README.md):
+    1. Add your provider name to the  list of providers supported `- Your provider`
+    1. Add your provider name and link to its document to the second list: `- [Your provider](docs/yourprovider.md)`
+1. Make sure to run the actual program (in Docker or directly) and check it updates your DNS records as expected, of course 😉 You can do this by setting a record to `127.0.0.1` manually and then run the updater to see if the update succeeds.
+1. Profit 🎉 Don't forget to [open a pull request](https://github.com/qdm12/ddns-updater/compare)
+
+## License
+
+Contributions are [released](https://help.github.com/articles/github-terms-of-service/#6-contributions-under-repository-license) to the public under the [open source license of this project](../LICENSE).

.github/ISSUE_TEMPLATE/bug.md

@@ -1,9 +1,8 @@
 ---
 name: Bug
 about: Report a bug
-title: 'Bug: ...'
-labels: ":bug: bug"
-assignees: qdm12
+title: 'Bug: FILL THIS TEXT OR ISSUE WILL BE CLOSED'
+labels:
 
 ---
 

.github/ISSUE_TEMPLATE/feature_request.md

@@ -1,9 +1,8 @@
 ---
 name: Feature request
 about: Suggest a feature to add to this project
-title: 'Feature request: ...'
-labels: ":bulb: feature request"
-assignees: qdm12
+title: 'Feature request: FILL THIS TEXT OR ISSUE WILL BE CLOSED'
+labels:
 
 ---
 

.github/ISSUE_TEMPLATE/help.md

@@ -1,9 +1,8 @@
 ---
 name: Help
 about: Ask for help
-title: 'Help: ...'
-labels: ":pray: help wanted"
-assignees:
+title: 'Help: FILL THIS TEXT OR ISSUE WILL BE CLOSED'
+labels:
 
 ---
 

.github/dependabot.yml

@@ -0,0 +1,15 @@
+version: 2
+updates:
+  # Maintain dependencies for GitHub Actions
+  - package-ecosystem: "github-actions"
+    directory: "/"
+    schedule:
+      interval: "daily"
+  - package-ecosystem: docker
+    directory: /
+    schedule:
+      interval: "daily"
+  - package-ecosystem: gomod
+    directory: /
+    schedule:
+      interval: "daily"

.github/labels.yml

@@ -1,51 +1,62 @@
-- name: ":robot: bot"
-  color: "69cde9"
-  description: ""
-- name: ":bug: bug"
-  color: "b60205"
-  description: ""
-- name: ":game_die: dependencies"
-  color: "0366d6"
-  description: ""
-- name: ":memo: documentation"
-  color: "c5def5"
-  description: ""
-- name: ":busts_in_silhouette: duplicate"
-  color: "cccccc"
-  description: ""
-- name: ":sparkles: enhancement"
-  color: "0054ca"
-  description: ""
-- name: ":bulb: feature request"
-  color: "0e8a16"
-  description: ""
-- name: ":mega: feedback"
-  color: "03a9f4"
-  description: ""
-- name: ":rocket: future maybe"
-  color: "fef2c0"
-  description: ""
-- name: ":hatching_chick: good first issue"
-  color: "7057ff"
-  description: ""
-- name: ":pray: help wanted"
-  color: "4caf50"
-  description: ""
-- name: ":hand: hold"
-  color: "24292f"
-  description: ""
-- name: ":no_entry_sign: invalid"
-  color: "e6e6e6"
-  description: ""
-- name: ":interrobang: maybe bug"
-  color: "ff5722"
-  description: ""
-- name: ":thinking: needs more info"
-  color: "795548"
-  description: ""
-- name: ":question: question"
-  color: "3f51b5"
-  description: ""
-- name: ":coffin: wontfix"
-  color: "ffffff"
-  description: ""
+- name: "Status: 🗯️ Waiting for feedback"
+  color: "f7d692"
+- name: "Status: 🔴 Blocked"
+  color: "f7d692"
+  description: "Blocked by another issue or pull request"
+- name: "Status: 🔒 After next release"
+  color: "f7d692"
+  description: "Will be done after the next release"
+
+- name: "Closed: ⚰️ Inactive"
+  color: "959a9c"
+  description: "No answer was received for weeks"
+- name: "Closed: 👥 Duplicate"
+  color: "959a9c"
+  description: "Issue duplicates an existing issue"
+- name: "Closed: 🗑️ Bad issue"
+  color: "959a9c"
+
+- name: "Priority: 🚨 Urgent"
+  color: "03adfc"
+- name: "Priority: 💤 Low priority"
+  color: "03adfc"
+
+- name: "Complexity: ☣️ Hard to do"
+  color: "ff9efc"
+- name: "Complexity: 🟩 Easy to do"
+  color: "ff9efc"
+
+- name: "Category: Config problem 📝"
+  color: "ffc7ea"
+- name: "Category: Healthcheck 🩺"
+  color: "ffc7ea"
+- name: "Category: Documentation ✒️"
+  description: "A problem with the readme or in the docs/ directory"
+  color: "ffc7ea"
+- name: "Category: Maintenance ⛓️"
+  description: "Anything related to code or other maintenance"
+  color: "ffc7ea"
+- name: "Category: Good idea 🎯"
+  description: "This is a good idea, judged by the maintainers"
+  color: "ffc7ea"
+- name: "Category: Motivated! 🙌"
+  description: "Your pumpness makes me pumped! The issue or PR shows great motivation!"
+  color: "ffc7ea"
+- name: "Category: Foolproof settings 👼"
+  color: "ffc7ea"
+- name: "Category: Label missing ❗"
+  color: "ffc7ea"
+- name: "Category: Provider update ♻️"
+  color: "ffc7ea"
+- name: "Category: Shoutrrr 📢"
+  color: "ffc7ea"
+- name: "Category: IP fetching 📥"
+  color: "ffc7ea"
+- name: "Category: Database 🗃️"
+  color: "ffc7ea"
+- name: "Category: New provider 🆕"
+  color: "ffc7ea"
+- name: "Category: Web UI 🖱️"
+  color: "ffc7ea"
+- name: "Category: Wildcard 🃏"
+  color: "ffc7ea"

.github/workflows/build-skip.yml

@@ -0,0 +1,35 @@
+name: No trigger file paths
+on:
+  push:
+    branches:
+      - master
+    paths-ignore:
+      - .github/workflows/build.yml
+      - cmd/**
+      - internal/**
+      - pkg/**
+      - .dockerignore
+      - .golangci.yml
+      - Dockerfile
+      - go.mod
+      - go.sum
+  pull_request:
+    paths-ignore:
+      - .github/workflows/build.yml
+      - cmd/**
+      - internal/**
+      - pkg/**
+      - .dockerignore
+      - .golangci.yml
+      - Dockerfile
+      - go.mod
+      - go.sum
+
+jobs:
+  verify:
+    runs-on: ubuntu-latest
+    permissions:
+      actions: read
+    steps:
+      - name: No trigger path triggered for required verify workflow.
+        run: exit 0

.github/workflows/build.yml

@@ -1,6 +1,11 @@
 name: CI
 on:
+  release:
+    types:
+      - published
   push:
+    branches:
+      - master
     paths:
       - .github/workflows/build.yml
       - cmd/**
@@ -26,14 +31,27 @@ on:
 jobs:
   verify:
     runs-on: ubuntu-latest
+    permissions:
+      actions: read
+      contents: read
     env:
       DOCKER_BUILDKIT: "1"
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
+
+      - uses: reviewdog/action-misspell@v1
+        with:
+          locale: "US"
+          level: error
+          exclude: |
+            *.md
 
       - name: Linting
         run: docker build --target lint .
 
+      - name: Mocks check
+        run: docker build --target mocks .
+
       - name: Build test image
         run: docker build --target test -t test-container .
 
@@ -44,12 +62,27 @@ jobs:
           -v "$(pwd)/coverage.txt:/tmp/gobuild/coverage.txt" \
           test-container
 
-      # We run this here to use the caching of the previous steps
       - name: Build final image
-        run: docker build .
+        run: docker build -t final-image .
+
+  codeql:
+    runs-on: ubuntu-latest
+    permissions:
+      actions: read
+      contents: read
+      security-events: write
+    steps:
+      - uses: actions/checkout@v4
+      - uses: actions/setup-go@v5
+        with:
+          go-version-file: go.mod
+      - uses: github/codeql-action/init@v4
+        with:
+          languages: go
+      - uses: github/codeql-action/autobuild@v4
+      - uses: github/codeql-action/analyze@v4
 
   publish:
-    needs: [verify]
     if: |
       github.repository == 'qdm12/ddns-updater' &&
       (
@@ -57,52 +90,77 @@ jobs:
         github.event_name == 'release' ||
         (github.event_name == 'pull_request' && github.event.pull_request.head.repo.full_name == github.repository && github.actor != 'dependabot[bot]')
       )
+    needs: [verify, codeql]
+    permissions:
+      actions: read
+      contents: write
+      packages: write
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
+        with:
+          fetch-depth: 0 # for gorelease last step
 
-      - uses: docker/setup-qemu-action@v2
-      - uses: docker/setup-buildx-action@v2
+      # extract metadata (tags, labels) for Docker
+      # https://github.com/docker/metadata-action
+      - name: Extract Docker metadata
+        id: meta
+        uses: docker/metadata-action@v5
+        with:
+          flavor: |
+            latest=${{ github.ref == format('refs/heads/{0}', github.event.repository.default_branch) }}
+          images: |
+            ghcr.io/qdm12/ddns-updater
+            qmcgaw/ddns-updater
+          tags: |
+            type=ref,event=pr
+            type=semver,pattern={{major}}.{{minor}}.{{patch}}
+            type=semver,pattern=v{{major}}.{{minor}}.{{patch}}
+            type=semver,pattern={{major}}.{{minor}}
+            type=semver,pattern=v{{major}}.{{minor}}
+            type=semver,pattern={{major}},enable=${{ !startsWith(github.ref, 'refs/tags/v0.') }}
+            type=semver,pattern=v{{major}},enable=${{ !startsWith(github.ref, 'refs/tags/v0.') }}
+            type=raw,value=latest,enable=${{ github.ref == format('refs/heads/{0}', github.event.repository.default_branch) }}
 
-      - uses: docker/login-action@v2
+      - uses: docker/setup-qemu-action@v3
+      - uses: docker/setup-buildx-action@v3
+
+      - uses: docker/login-action@v3
         with:
           username: qmcgaw
           password: ${{ secrets.DOCKERHUB_PASSWORD }}
 
-      - name: Login to GitHub Container Registry
-        uses: docker/login-action@v2
+      - uses: docker/login-action@v3
         with:
           registry: ghcr.io
           username: ${{ github.repository_owner }}
-          password: ${{ secrets.GITHUB_TOKEN }}
+          password: ${{ github.token }}
 
-      - name: Set variables
-        id: vars
-        run: |
-          BRANCH=${GITHUB_REF#refs/heads/}
-          TAG=${GITHUB_REF#refs/tags/}
-          echo ::set-output name=commit::$(git rev-parse --short HEAD)
-          echo ::set-output name=build_date::$(date -u +%Y-%m-%dT%H:%M:%SZ)
-          if [ "$TAG" != "$GITHUB_REF" ]; then
-            echo ::set-output name=version::$TAG
-            echo ::set-output name=platforms::linux/amd64,linux/386,linux/arm64,linux/arm/v6,linux/arm/v7,linux/s390x,linux/ppc64le,linux/riscv64
-          elif [ "$BRANCH" = "master" ]; then
-            echo ::set-output name=version::latest
-            echo ::set-output name=platforms::linux/amd64,linux/386,linux/arm64,linux/arm/v6,linux/arm/v7,linux/s390x,linux/ppc64le,linux/riscv64
-          else
-            echo ::set-output name=version::${BRANCH##*/}
-            echo ::set-output name=platforms::linux/amd64,linux/386,linux/arm64,linux/arm/v6,linux/arm/v7
-          fi
+      - name: Short commit
+        id: shortcommit
+        run: echo "::set-output name=value::$(git rev-parse --short HEAD)"
 
       - name: Build and push final image
-        uses: docker/build-push-action@v3
+        uses: docker/build-push-action@v6
         with:
-          platforms: ${{ steps.vars.outputs.platforms }}
+          platforms: linux/amd64,linux/386,linux/arm64,linux/arm/v6,linux/arm/v7,linux/s390x,linux/ppc64le,linux/riscv64
+          labels: ${{ steps.meta.outputs.labels }}
           build-args: |
-            BUILD_DATE=${{ steps.vars.outputs.build_date }}
-            COMMIT=${{ steps.vars.outputs.commit }}
-            VERSION=${{ steps.vars.outputs.version }}
-          tags: |
-            qmcgaw/ddns-updater:${{ steps.vars.outputs.version }}
-            ghcr.io/${{ github.repository_owner }}/ddns-updater:${{ steps.vars.outputs.version }}
+            CREATED=${{ fromJSON(steps.meta.outputs.json).labels['org.opencontainers.image.created'] }}
+            COMMIT=${{ steps.shortcommit.outputs.value }}
+            VERSION=${{ fromJSON(steps.meta.outputs.json).labels['org.opencontainers.image.version'] }}
+          tags: ${{ steps.meta.outputs.tags }}
           push: true
+
+      - if: github.event_name == 'release'
+        uses: actions/setup-go@v5
+        with:
+          go-version-file: go.mod
+
+      - if: github.event_name == 'release'
+        uses: goreleaser/goreleaser-action@v6
+        with:
+          version: latest
+          args: release --clean --config .github/workflows/configs/.goreleaser.yaml
+        env:
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}

.github/workflows/configs/.goreleaser.yaml

@@ -0,0 +1,30 @@
+before:
+  hooks:
+    - go mod download
+builds:
+  - main: ./cmd/ddns-updater/main.go
+    flags:
+      - -trimpath
+    env:
+      - CGO_ENABLED=0
+    targets:
+      # See https://goreleaser.com/customization/build/
+      - linux_amd64
+      - linux_386
+      - linux_arm64
+      - linux_arm_7
+      - linux_arm_6
+      - linux_arm_5
+      - darwin_amd64
+      - darwin_arm64
+      - windows_amd64
+      - windows_386
+      - windows_arm64
+archives:
+  - format: binary
+checksum:
+  name_template: "checksums.txt"
+snapshot:
+  name_template: "{{ .Tag }}-next"
+changelog:
+  sort: asc

.github/workflows/configs/mlc-config.json

@@ -0,0 +1,47 @@
+{
+  "ignorePatterns": [
+    {
+      "pattern": "^http://localhost"
+    },
+    {
+      "pattern": "^https://api6.ipify.org$"
+    },
+    {
+      "pattern": "^http://ip1.dynupdate6.no-ip.com$"
+    },
+    {
+      "pattern": "^https://ap.www.namecheap.com/Domains/DomainControlPanel/example.com/advancedns$"
+    },
+    {
+      "pattern": "^https://www.godaddy.com"
+    },
+    {
+      "pattern": "^https://www.namecheap.com"
+    },
+    {
+      "pattern": "https://www.linode.com/docs/products/tools/api/guides/manage-api-tokens/"
+    },
+    {
+      "pattern": "https://(ip|ipv|v)6.+"
+    },
+    {
+      "pattern": "https://github.com/qdm12/ddns-updater/pkgs/container/ddns-updater"
+    },
+    {
+      "pattern": "^https://www.duckdns.org/$"
+    },
+    {
+      "pattern": "^https://my.vultr.com/settings/#settingsapi$"
+    },
+    {
+      "pattern": "^https://www.namesilo.com"
+    }
+  ],
+  "timeout": "20s",
+  "retryOn429": false,
+  "fallbackRetryDelay": "30s",
+  "aliveStatusCodes": [
+    200,
+    206
+  ]
+}

.github/workflows/dockerhub-description.yml

@@ -1,19 +0,0 @@
-name: Docker Hub description
-on:
-  push:
-    branches: [master]
-    paths:
-      - README.md
-      - .github/workflows/dockerhub-description.yml
-jobs:
-  dockerHubDescription:
-    runs-on: ubuntu-latest
-    steps:
-      - name: Checkout
-        uses: actions/checkout@v3
-      - name: Docker Hub Description
-        uses: peter-evans/dockerhub-description@v3.1.0
-        env:
-          DOCKERHUB_USERNAME: qmcgaw
-          DOCKERHUB_PASSWORD: ${{ secrets.DOCKERHUB_PASSWORD }}
-          DOCKERHUB_REPOSITORY: qmcgaw/ddns-updater

.github/workflows/labels.yml

@@ -10,9 +10,9 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Checkout
-        uses: actions/checkout@v3
+        uses: actions/checkout@v4
       - name: Labeler
         if: success()
-        uses: crazy-max/ghaction-github-labeler@v4
+        uses: crazy-max/ghaction-github-labeler@v5
         with:
           github-token: ${{ secrets.GITHUB_TOKEN }}

.github/workflows/markdown-skip.yml

@@ -0,0 +1,21 @@
+name: Markdown
+on:
+  push:
+    branches:
+      - master
+    paths-ignore:
+      - "**.md"
+      - .github/workflows/markdown.yml
+  pull_request:
+    paths-ignore:
+      - "**.md"
+      - .github/workflows/markdown.yml
+
+jobs:
+  markdown:
+    runs-on: ubuntu-latest
+    permissions:
+      actions: read
+    steps:
+      - name: No trigger path triggered for required markdown workflow.
+        run: exit 0

.github/workflows/markdown.yml

@@ -0,0 +1,48 @@
+name: Markdown
+on:
+  push:
+    branches:
+      - master
+    paths:
+      - "**.md"
+      - .github/workflows/markdown.yml
+  pull_request:
+    paths:
+      - "**.md"
+      - .github/workflows/markdown.yml
+
+jobs:
+  markdown:
+    runs-on: ubuntu-latest
+    permissions:
+      actions: read
+      contents: read
+    steps:
+      - uses: actions/checkout@v4
+
+      - uses: DavidAnson/markdownlint-cli2-action@v18
+        with:
+          globs: "**.md"
+          config: .markdownlint.json
+
+      - uses: reviewdog/action-misspell@v1
+        with:
+          locale: "US"
+          level: error
+          pattern: |
+            *.md
+
+      - uses: gaurav-nelson/github-action-markdown-link-check@v1
+        with:
+          use-quiet-mode: yes
+          config-file: .github/workflows/configs/mlc-config.json
+
+      - uses: peter-evans/dockerhub-description@v5
+        if: github.repository == 'qdm12/ddns-updater' && github.event_name == 'push'
+        with:
+          username: qmcgaw
+          password: ${{ secrets.DOCKERHUB_PASSWORD }}
+          repository: qmcgaw/ddns-updater
+          short-description: Container to update DNS records periodically with WebUI for many DNS providers
+          readme-filepath: README.md
+          enable-url-completion: true

.gitignore

@@ -1 +1 @@
-data
+/data

.golangci.yml

@@ -1,61 +1,96 @@
-linters-settings:
-  maligned:
-    suggest-new: true
-  misspell:
-    locale: US
+version: "2"
 
-issues:
-  exclude-rules:
-    - path: _test\.go
-      linters:
-        - containedctx
-        - dupl
-        - goerr113
+formatters:
+  enable:
+    - gci
+    - gofumpt
+    - goimports
+  exclusions:
+    generated: lax
+    paths:
+      - third_party$
+      - builtin$
+      - examples$
 
 linters:
+  settings:
+    misspell:
+      locale: US
+  exclusions:
+    generated: lax
+    presets:
+      - comments
+      - common-false-positives
+      - legacy
+      - std-error-handling
+    rules:
+      - linters:
+          - containedctx
+          - dupl
+          - err113
+        path: _test\.go
+      - linters:
+          - contextcheck
+        text: Function `exitHealthchecksio` should pass the context parameter
+      - linters:
+          - lll
+        source: See https://
+      - linters:
+          - revive
+        text: "var-naming: avoid meaningless package names"
+        path: internal\/provider\/utils\/
+    paths:
+      - third_party$
+      - builtin$
+      - examples$
   enable:
     # - cyclop
     - asasalint
     - asciicheck
     - bidichk
     - bodyclose
+    - canonicalheader
     - containedctx
+    - contextcheck
+    - copyloopvar
     - decorder
     - dogsled
     - dupl
     - dupword
     - durationcheck
+    - err113
     - errchkjson
     - errname
     - errorlint
-    - execinquery
     - exhaustive
-    - exportloopref
+    - fatcontext
     - forcetypeassert
-    - gci
     - gocheckcompilerdirectives
     - gochecknoglobals
     - gochecknoinits
+    - gochecksumtype
     - gocognit
     - goconst
     - gocritic
     - gocyclo
     - godot
-    - goerr113
     - goheader
-    - goimports
-    - gomnd
     - gomoddirectives
     - goprintffuncname
     - gosec
+    - gosmopolitan
     - grouper
     - importas
+    - inamedparam
     - interfacebloat
+    - intrange
     - ireturn
     - lll
     - maintidx
     - makezero
+    - mirror
     - misspell
+    - mnd
     - musttag
     - nakedret
     - nestif
@@ -65,14 +100,17 @@ linters:
     - nolintlint
     - nosprintfhostport
     - paralleltest
+    - perfsprint
     - prealloc
     - predeclared
     - promlinter
+    - protogetter
     - reassign
     - revive
     - rowserrcheck
+    - sloglint
     - sqlclosecheck
-    - tenv
+    - tagalign
     - thelper
     - tparallel
     - unconvert
@@ -80,8 +118,4 @@ linters:
     - usestdlibvars
     - wastedassign
     - whitespace
-
-run:
-  skip-dirs:
-    - .devcontainer
-    - .github
+    - zerologlint

.markdownlint.json

@@ -0,0 +1,8 @@
+{
+  "MD013": false,
+  "MD033": {
+    "allowed_elements": [
+      "img"
+    ]
+  }
+}

Dockerfile

@@ -1,18 +1,22 @@
 ARG BUILDPLATFORM=linux/amd64
-ARG ALPINE_VERSION=3.18
-ARG GO_VERSION=1.20
-ARG XCPUTRANSLATE_VERSION=v0.6.0
-ARG GOLANGCI_LINT_VERSION=v1.52.2
+ARG ALPINE_VERSION=3.22
+ARG GO_VERSION=1.25
+ARG XCPUTRANSLATE_VERSION=v0.9.0
+ARG GOLANGCI_LINT_VERSION=v2.4.0
+ARG MOCKGEN_VERSION=v1.6.0
 
-FROM --platform=${BUILDPLATFORM} qmcgaw/xcputranslate:${XCPUTRANSLATE_VERSION} AS xcputranslate
-FROM --platform=${BUILDPLATFORM} qmcgaw/binpot:golangci-lint-${GOLANGCI_LINT_VERSION} AS golangci-lint
+FROM --platform=${BUILDPLATFORM} ghcr.io/qdm12/xcputranslate:${XCPUTRANSLATE_VERSION} AS xcputranslate
+FROM --platform=${BUILDPLATFORM} ghcr.io/qdm12/binpot:golangci-lint-${GOLANGCI_LINT_VERSION} AS golangci-lint
+FROM --platform=${BUILDPLATFORM} ghcr.io/qdm12/binpot:mockgen-${MOCKGEN_VERSION} AS mockgen
 
 FROM --platform=$BUILDPLATFORM golang:${GO_VERSION}-alpine${ALPINE_VERSION} AS base
 WORKDIR /tmp/gobuild
 ENV CGO_ENABLED=0
-RUN apk --update add git g++
+# Note: findutils needed to have xargs support `-d` flag for mocks stage.
+RUN apk --update add git g++ findutils
 COPY --from=xcputranslate /xcputranslate /usr/local/bin/xcputranslate
 COPY --from=golangci-lint /bin /go/bin/golangci-lint
+COPY --from=mockgen /bin /go/bin/mockgen
 # Copy repository code and install Go dependencies
 COPY go.mod go.sum ./
 RUN go mod download
@@ -25,32 +29,49 @@ FROM --platform=$BUILDPLATFORM base AS test
 # - we set CGO_ENABLED=1 to have it enabled
 # - we installed g++ to support the race detector
 ENV CGO_ENABLED=1
+COPY readme/ ./readme/
+COPY README.md ./README.md
 ENTRYPOINT go test -race -coverpkg=./... -coverprofile=coverage.txt -covermode=atomic ./...
 
 FROM --platform=$BUILDPLATFORM base AS lint
 COPY .golangci.yml ./
 RUN golangci-lint run --timeout=10m
 
+FROM --platform=${BUILDPLATFORM} base AS mocks
+RUN git init && \
+    git config user.email ci@localhost && \
+    git config user.name ci && \
+    git config core.fileMode false && \
+    git add -A && \
+    git commit -m "snapshot" && \
+    grep -lr -E '^// Code generated by MockGen\. DO NOT EDIT\.$' . | xargs -r -d '\n' rm && \
+    go generate -run "mockgen" ./... && \
+    git diff --exit-code && \
+    rm -rf .git/
+
 FROM --platform=$BUILDPLATFORM base AS build
+RUN mkdir -p /tmp/data
 ARG VERSION=unknown
-ARG BUILD_DATE="an unknown date"
+ARG CREATED="an unknown date"
 ARG COMMIT=unknown
 ARG TARGETPLATFORM
 RUN GOARCH="$(xcputranslate translate -targetplatform ${TARGETPLATFORM} -field arch)" \
     GOARM="$(xcputranslate translate -targetplatform ${TARGETPLATFORM} -field arm)" \
     go build -trimpath -ldflags="-s -w \
     -X 'main.version=$VERSION' \
-    -X 'main.buildDate=$BUILD_DATE' \
+    -X 'main.date=$CREATED' \
     -X 'main.commit=$COMMIT' \
-    " -o app cmd/updater/main.go
+    " -o app cmd/ddns-updater/main.go
 
 FROM scratch
 EXPOSE 8000
-HEALTHCHECK --interval=60s --timeout=5s --start-period=10s --retries=2 CMD ["/updater/app", "healthcheck"]
+HEALTHCHECK --interval=60s --timeout=5s --start-period=10s --retries=2 CMD ["/updater/ddns-updater", "healthcheck"]
 ARG UID=1000
 ARG GID=1000
 USER ${UID}:${GID}
-ENTRYPOINT ["/updater/app"]
+WORKDIR /updater
+ENTRYPOINT ["/updater/ddns-updater"]
+COPY --from=build --chown=${UID}:${GID} /tmp/data /updater/data
 ENV \
     # Core
     CONFIG= \
@@ -64,10 +85,12 @@ ENV \
     PUBLICIP_DNS_TIMEOUT=3s \
     HTTP_TIMEOUT=10s \
     DATADIR=/updater/data \
+    CONFIG_FILEPATH=/updater/data/config.json \
     RESOLVER_ADDRESS= \
     RESOLVER_TIMEOUT=5s \
     # Web UI
-    LISTENING_PORT=8000 \
+    SERVER_ENABLED=yes \
+    LISTENING_ADDRESS=:8000 \
     ROOT_URL=/ \
     # Backup
     BACKUP_PERIOD=0 \
@@ -76,18 +99,24 @@ ENV \
     LOG_LEVEL=info \
     LOG_CALLER=hidden \
     SHOUTRRR_ADDRESSES= \
-    TZ=
+    SHOUTRRR_DEFAULT_TITLE="DDNS Updater" \
+    TZ= \
+    # UMASK left empty so it dynamically defaults to the OS current umask
+    UMASK= \
+    HEALTH_SERVER_ADDRESS=127.0.0.1:9999 \
+    HEALTH_HEALTHCHECKSIO_BASE_URL=https://hc-ping.com \
+    HEALTH_HEALTHCHECKSIO_UUID=
 ARG VERSION=unknown
-ARG BUILD_DATE="an unknown date"
+ARG CREATED="an unknown date"
 ARG COMMIT=unknown
 LABEL \
     org.opencontainers.image.authors="quentin.mcgaw@gmail.com" \
     org.opencontainers.image.version=$VERSION \
-    org.opencontainers.image.created=$BUILD_DATE \
+    org.opencontainers.image.created=$CREATED \
     org.opencontainers.image.revision=$COMMIT \
     org.opencontainers.image.url="https://github.com/qdm12/ddns-updater" \
     org.opencontainers.image.documentation="https://github.com/qdm12/ddns-updater" \
     org.opencontainers.image.source="https://github.com/qdm12/ddns-updater" \
     org.opencontainers.image.title="ddns-updater" \
     org.opencontainers.image.description="Universal DNS updater with WebUI"
-COPY --from=build --chown=${UID}:${GID} /tmp/gobuild/app /updater/app
+COPY --from=build --chown=${UID}:${GID} /tmp/gobuild/app /updater/ddns-updater

README.md

@@ -1,15 +1,13 @@
-# Lightweight universal DDNS Updater with Docker and web UI
+# Lightweight universal DDNS Updater program
 
-Light container updating DNS A and/or AAAA records periodically for multiple DNS providers
+Program to keep DNS A and/or AAAA records updated for multiple DNS providers
 
 <img height="200" alt="DDNS Updater logo" src="https://raw.githubusercontent.com/qdm12/ddns-updater/master/readme/ddnsgopher.svg">
 
 [![Build status](https://github.com/qdm12/ddns-updater/actions/workflows/build.yml/badge.svg)](https://github.com/qdm12/ddns-updater/actions/workflows/build.yml)
 
-[![dockeri.co](https://dockeri.co/image/qmcgaw/ddns-updater)](https://hub.docker.com/r/qmcgaw/ddns-updater)
-
 ![Last release](https://img.shields.io/github/release/qdm12/ddns-updater?label=Last%20release)
-![Last Docker tag](https://img.shields.io/docker/v/qmcgaw/ddns-updater?sort=semver&label=Last%20Docker%20tag)
+![Last Docker tag](https://img.shields.io/github/v/release/qdm12/ddns-updater?sort=semver&label=Last%20Docker%20tag)
 [![Last release size](https://img.shields.io/docker/image-size/qmcgaw/ddns-updater?sort=semver&label=Last%20released%20image)](https://hub.docker.com/r/qmcgaw/ddns-updater/tags?page=1&ordering=last_updated)
 ![GitHub last release date](https://img.shields.io/github/release-date/qdm12/ddns-updater?label=Last%20release%20date)
 ![Commits since release](https://img.shields.io/github/commits-since/qdm12/ddns-updater/latest?sort=semver)
@@ -22,23 +20,40 @@ Light container updating DNS A and/or AAAA records periodically for multiple DNS
 [![GitHub issues](https://img.shields.io/github/issues/qdm12/ddns-updater.svg)](https://github.com/qdm12/ddns-updater/issues)
 [![GitHub closed issues](https://img.shields.io/github/issues-closed/qdm12/ddns-updater.svg)](https://github.com/qdm12/ddns-updater/issues?q=is%3Aissue+is%3Aclosed)
 
-[![Lines of code](https://img.shields.io/tokei/lines/github/qdm12/ddns-updater)](https://github.com/qdm12/ddns-updater)
 ![Code size](https://img.shields.io/github/languages/code-size/qdm12/ddns-updater)
 ![GitHub repo size](https://img.shields.io/github/repo-size/qdm12/ddns-updater)
 ![Go version](https://img.shields.io/github/go-mod/go-version/qdm12/ddns-updater)
 
-[![MIT](https://img.shields.io/github/license/qdm12/ddns-updater)](https://github.com/qdm12/ddns-updater/master/LICENSE)
+[![MIT](https://img.shields.io/github/license/qdm12/ddns-updater)](LICENSE)
 ![Visitors count](https://visitor-badge.laobi.icu/badge?page_id=ddns-updater.readme)
 
+## Versioned documentation
+
+This readme and the [docs/](docs/) directory are **versioned** to match the program version:
+
+| Version | Readme link | Docs link |
+| --- | --- | --- |
+| Latest | [README](https://github.com/qdm12/ddns-updater/blob/master/README.md) | [docs/](https://github.com/qdm12/ddns-updater/tree/master/docs) |
+| `v2.8` | [README](https://github.com/qdm12/ddns-updater/blob/v2.8.0/README.md) | [docs/](https://github.com/qdm12/ddns-updater/blob/v2.8.0/docs) |
+| `v2.7` | [README](https://github.com/qdm12/ddns-updater/blob/v2.7.1/README.md) | [docs/](https://github.com/qdm12/ddns-updater/blob/v2.7.1/docs) |
+| `v2.6` | [README](https://github.com/qdm12/ddns-updater/blob/v2.6.1/README.md) | [docs/](https://github.com/qdm12/ddns-updater/blob/v2.6.1/docs) |
+| `v2.5` | [README](https://github.com/qdm12/ddns-updater/blob/v2.5.0/README.md) | [docs/](https://github.com/qdm12/ddns-updater/blob/v2.5.0/docs) |
+
 ## Features
 
+- Available as a Docker image [`ghcr.io/qdm12/ddns-updater`]((https://github.com/qdm12/ddns-updater/pkgs/container/ddns-updater)) and [`qmcgaw/ddns-updater`](https://hub.docker.com/r/qmcgaw/ddns-updater)
+- Available as [zero-dependency binaries for Linux, Windows and MacOS](https://github.com/qdm12/ddns-updater/releases)
+- 🆕 Available in the AUR as [`ddns-updater`](https://aur.archlinux.org/packages/ddns-updater) - see [#808](https://github.com/qdm12/ddns-updater/discussions/808)
 - Updates periodically A records for different DNS providers:
   - Aliyun
   - AllInkl
+  - ChangeIP
   - Cloudflare
   - DD24
   - DDNSS.de
+  - deSEC
   - DigitalOcean
+  - Domeneshop
   - DonDominio
   - DNSOMatic
   - DNSPod
@@ -46,66 +61,115 @@ Light container updating DNS A and/or AAAA records periodically for multiple DNS
   - DuckDNS
   - DynDNS
   - Dynu
+  - DynV6
+  - EasyDNS
   - FreeDNS
   - Gandi
   - GCP
   - GoDaddy
-  - Google
+  - GoIP.de
   - He.net
+  - Hetzner
   - Infomaniak
   - INWX
+  - Ionos
   - Linode
+  - Loopia
   - LuaDNS
+  - Myaddr
+  - Name.com
   - Namecheap
+  - NameSilo
+  - Netcup
   - NoIP
+  - Now-DNS
   - Njalla
   - OpenDNS
   - OVH
   - Porkbun
+  - Route53
   - Selfhost.de
   - Servercow.de
   - Spdyn
   - Strato.de
   - Variomedia.de
+  - Vultr
+  - Zoneedit
   - **Want more?** [Create an issue for it](https://github.com/qdm12/ddns-updater/issues/new/choose)!
-- Web User interface
+- Web user interface (Desktop)
 
-![Web UI](https://raw.githubusercontent.com/qdm12/ddns-updater/master/readme/webui.png)
+    ![Web UI](readme/webui-desktop.gif)
 
-- 11MB Docker image based on a Go static binary in a Scratch Docker image
+- Web user interface (Mobile)
+
+    ![Mobile Web UI](readme/webui-mobile.png)
+
+- Send notifications with [**Shoutrrr**](https://containrrr.dev/shoutrrr/v0.8/services/overview/) using `SHOUTRRR_ADDRESSES`
+- Container (Docker/K8s) specific features:
+  - Lightweight 12MB Docker image based on the Scratch Docker image
+  - Docker healthcheck verifying the DNS resolution of your domains
+  - Images compatible with `amd64`, `386`, `arm64`, `armv7`, `armv6`, `s390x`, `ppc64le`, `riscv64` CPU architectures
 - Persistence with a JSON file *updates.json* to store old IP addresses with change times for each record
-- Docker healthcheck verifying the DNS resolution of your domains
-- Highly configurable
-- Send notifications with [**Shoutrrr**](https://containrrr.dev/shoutrrr/services/overview/) using `SHOUTRRR_ADDRESSES`
-- Compatible with `amd64`, `386`, `arm64`, `armv7`, `armv6`, `s390x`, `ppc64le`, `riscv64` CPU architectures.
 
 ## Setup
 
-The program reads the configuration from a JSON object, either from a file or from an environment variable.
+### Binary programs
 
-1. Create a directory of your choice, say *data* with a file named **config.json** inside:
-
-    ```sh
-    mkdir data
-    touch data/config.json
-    # Owned by user ID of Docker container (1000)
-    chown -R 1000 data
-    # all access (for creating json database file data/updates.json)
-    chmod 700 data
-    # read access only
-    chmod 400 data/config.json
-    ```
-
-    If you want to use another user ID, [build the image yourself](#build-the-image) with `--build-arg UID=<your-uid>`. You could also just run the container as root with `--user="0"` but this is not advised security wise.
-1. Write a JSON configuration in *data/config.json*, for example:
+1. Download the pre-built program for your platform from the assets of a release in the [releases page](https://github.com/qdm12/ddns-updater/releases). You can alternatively download, build and install the latest version of the program by installing [Go](https://golang.org/doc/install) and then run `go install github.com/qdm12/ddns-updater/cmd/ddns-updater@latest`.
+1. For Linux and MacOS, make the program executable with `chmod +x ddns-updater`.
+1. In the directory where the program is saved, create a directory `data`.
+1. Write a JSON configuration in `data/config.json`, for example:
 
     ```json
     {
         "settings": [
             {
                 "provider": "namecheap",
-                "domain": "example.com",
-                "host": "@",
+                "domain": "sub.example.com",
+                "password": "e5322165c1d74692bfa6d807100c0310"
+            }
+        ]
+    }
+    ```
+
+    You can find more information in the [configuration section](#configuration) to customize it.
+1. Run the program with `./ddns-updater` (`./ddns-updater.exe` on Windows) or by double-clicking on it.
+1. The following is **optional**.
+    - You can customize the program behavior using either [environment variables](#environment-variables) or flags. For flags, there is a flag corresponding to each environment variable, where it's all lowercase and underscores are replaced with dashes. For example the environment variable `LOG_LEVEL` translates into `--log-level`.
+
+### Container
+
+[➡️ Qnap guide by @Araminta](https://github.com/qdm12/ddns-updater/issues/708)
+
+1. Create a directory, for example, *data* which is:
+    - owned by user id `1000`, which is the built-in user ID of the ddns-updater container
+    - has user read+write+execute permissions
+
+    ```sh
+    mkdir data
+    chown 1000 data
+    chmod u+r+w+x data
+    ```
+
+    If you want to use another user ID, [build the image yourself](#build-the-image) with `--build-arg UID=<your-uid>`. You could also just run the container as root with `--user="0"` but this is not advised security wise.
+
+1. Similarly, create a *data/config.json* file which is:
+    - owned by user id `1000`
+    - has user read permissions
+
+    ```sh
+    touch data/config.json
+    chmod u+r data/config.json
+    ```
+
+1. Edit *data/config.json*, for example:
+
+    ```json
+    {
+        "settings": [
+            {
+                "provider": "namecheap",
+                "domain": "sub.example.com",
                 "password": "e5322165c1d74692bfa6d807100c0310"
             }
         ]
@@ -117,25 +181,16 @@ The program reads the configuration from a JSON object, either from a file or fr
 1. Run the container with
 
     ```sh
-    docker run -d -p 8000:8000/tcp -v "$(pwd)"/data:/updater/data qmcgaw/ddns-updater
+    docker run -d -p 8000:8000/tcp -v "$(pwd)"/data:/updater/data ghcr.io/qdm12/ddns-updater
     ```
 
-1. ⚠️ If you use IPv6, you might need to set `-e IPV6_PREFIX=/64` (`/64` is your prefix, depending on your ISP)
-1. (Optional) You can also set your JSON configuration as a single environment variable line (i.e. `{"settings": [{"provider": "namecheap", ...}]}`), which takes precedence over config.json. Note however that if you don't bind mount the `/updater/data` directory, there won't be a persistent database file `/updater/updates.json` but it will still work.
-
-### Next steps
-
-You can also use [docker-compose.yml](https://github.com/qdm12/ddns-updater/blob/master/docker-compose.yml) with:
-
-```sh
-docker-compose up -d
-```
-
-You can update the image with `docker pull qmcgaw/ddns-updater`. Other [Docker image tags are available](https://hub.docker.com/repository/docker/qmcgaw/ddns-updater/tags).
-
-### GHCR
-
-Images are also added to the Github Container Registry. To use the GHCR container replace `qmcgaw/ddns-updater` to `ghcr.io/qdm12/ddns-updater`, further details are available [here](https://github.com/qdm12/ddns-updater/pkgs/container/ddns-updater)
+1. The following is **optional**.
+    - You can customize the program behavior using [environment variables](#environment-variables)
+    - You can use [docker-compose.yml](docker-compose.yml) with `docker-compose up -d`
+    - **Kubernetes**: check out the [k8s directory](k8s) for an installation guide and examples.
+    - Other [Docker image tags are available](https://github.com/qdm12/ddns-updater/pkgs/container/ddns-updater)
+    - You can update the image with `docker pull ghcr.io/qdm12/ddns-updater`
+    - You can set your JSON configuration as a single environment variable line (i.e. `{"settings": [{"provider": "namecheap", ...}]}`), which takes precedence over config.json. Note however that if you don't bind mount the `/updater/data` directory, there won't be a persistent database file `/updater/updates.json` but it will still work.
 
 ## Configuration
 
@@ -157,52 +212,71 @@ Start by having the following content in *config.json*, or in your `CONFIG` envi
 For each setting, you need to fill in parameters.
 Check the documentation for your DNS provider:
 
-- [Aliyun](https://github.com/qdm12/ddns-updater/blob/master/docs/aliyun.md)
-- [Cloudflare](https://github.com/qdm12/ddns-updater/blob/master/docs/cloudflare.md)
-- [DDNSS.de](https://github.com/qdm12/ddns-updater/blob/master/docs/ddnss.de.md)
-- [DigitalOcean](https://github.com/qdm12/ddns-updater/blob/master/docs/digitalocean.md)
-- [DD24](https://github.com/qdm12/ddns-updater/blob/master/docs/domaindiscount24.md)
-- [DonDominio](https://github.com/qdm12/ddns-updater/blob/master/docs/dondominio.md)
-- [DNSOMatic](https://github.com/qdm12/ddns-updater/blob/master/docs/dnsomatic.md)
-- [DNSPod](https://github.com/qdm12/ddns-updater/blob/master/docs/dnspod.md)
-- [Dreamhost](https://github.com/qdm12/ddns-updater/blob/master/docs/dreamhost.md)
-- [DuckDNS](https://github.com/qdm12/ddns-updater/blob/master/docs/duckdns.md)
-- [DynDNS](https://github.com/qdm12/ddns-updater/blob/master/docs/dyndns.md)
-- [Dynu](https://github.com/qdm12/ddns-updater/blob/master/docs/dynu.md)
-- [DynV6](https://github.com/qdm12/ddns-updater/blob/master/docs/dynv6.md)
-- [FreeDNS](https://github.com/qdm12/ddns-updater/blob/master/docs/freedns.md)
-- [Gandi](https://github.com/qdm12/ddns-updater/blob/master/docs/gandi.md)
-- [GCP](https://github.com/qdm12/ddns-updater/blob/master/docs/gcp.md)
-- [GoDaddy](https://github.com/qdm12/ddns-updater/blob/master/docs/godaddy.md)
-- [Google](https://github.com/qdm12/ddns-updater/blob/master/docs/google.md)
-- [He.net](https://github.com/qdm12/ddns-updater/blob/master/docs/he.net.md)
-- [Infomaniak](https://github.com/qdm12/ddns-updater/blob/master/docs/infomaniak.md)
-- [INWX](https://github.com/qdm12/ddns-updater/blob/master/docs/inwx.md)
-- [Linode](https://github.com/qdm12/ddns-updater/blob/master/docs/linode.md)
-- [LuaDNS](https://github.com/qdm12/ddns-updater/blob/master/docs/luadns.md)
-- [Namecheap](https://github.com/qdm12/ddns-updater/blob/master/docs/namecheap.md)
-- [NoIP](https://github.com/qdm12/ddns-updater/blob/master/docs/noip.md)
-- [Njalla](https://github.com/qdm12/ddns-updater/blob/master/docs/njalla.md)
-- [OpenDNS](https://github.com/qdm12/ddns-updater/blob/master/docs/opendns.md)
-- [OVH](https://github.com/qdm12/ddns-updater/blob/master/docs/ovh.md)
-- [Porkbun](https://github.com/qdm12/ddns-updater/blob/master/docs/porkbun.md)
-- [Selfhost.de](https://github.com/qdm12/ddns-updater/blob/master/docs/selfhost.de.md)
-- [Servercow.de](https://github.com/qdm12/ddns-updater/blob/master/docs/servercow.md)
-- [Spdyn](https://github.com/qdm12/ddns-updater/blob/master/docs/spdyn.md)
-- [Strato.de](https://github.com/qdm12/ddns-updater/blob/master/docs/strato.md)
-- [Variomedia.de](https://github.com/qdm12/ddns-updater/blob/master/docs/variomedia.md)
+- [Aliyun](docs/aliyun.md)
+- [Allinkl](docs/allinkl.md)
+- [ChangeIP](docs/changeip.md)
+- [Cloudflare](docs/cloudflare.md)
+- [DD24](docs/dd24.md)
+- [DDNSS.de](docs/ddnss.de.md)
+- [deSEC](docs/desec.md)
+- [DigitalOcean](docs/digitalocean.md)
+- [Domeneshop](docs/domeneshop.md)
+- [DonDominio](docs/dondominio.md)
+- [DNSOMatic](docs/dnsomatic.md)
+- [DNSPod](docs/dnspod.md)
+- [Dreamhost](docs/dreamhost.md)
+- [DuckDNS](docs/duckdns.md)
+- [DynDNS](docs/dyndns.md)
+- [Dynu](docs/dynu.md)
+- [DynV6](docs/dynv6.md)
+- [EasyDNS](docs/easydns.md)
+- [FreeDNS](docs/freedns.md)
+- [Gandi](docs/gandi.md)
+- [GCP](docs/gcp.md)
+- [GoDaddy](docs/godaddy.md)
+- [GoIP.de](docs/goip.md)
+- [He.net](docs/he.net.md)
+- [Hetzner](docs/hetzner.md)
+- [Infomaniak](docs/infomaniak.md)
+- [INWX](docs/inwx.md)
+- [Ionos](docs/ionos.md)
+- [Linode](docs/linode.md)
+- [Loopia](docs/loopia.md)
+- [LuaDNS](docs/luadns.md)
+- [Myaddr](docs/myaddr.md)
+- [Name.com](docs/name.com.md)
+- [Namecheap](docs/namecheap.md)
+- [NameSilo](docs/namesilo.md)
+- [Netcup](docs/netcup.md)
+- [NoIP](docs/noip.md)
+- [Now-DNS](docs/nowdns.md)
+- [Njalla](docs/njalla.md)
+- [OpenDNS](docs/opendns.md)
+- [OVH](docs/ovh.md)
+- [Porkbun](docs/porkbun.md)
+- [Route53](docs/route53.md)
+- [Selfhost.de](docs/selfhost.de.md)
+- [Servercow.de](docs/servercow.md)
+- [Spdyn](docs/spdyn.md)
+- [Strato.de](docs/strato.md)
+- [Variomedia.de](docs/variomedia.md)
+- [Vultr](docs/vultr.md)
+- [Zoneedit](docs/zoneedit.md)
+- [Custom](docs/custom.md)
 
 Note that:
 
-- you can specify multiple hosts for the same domain using a comma separated list. For example with `"host": "@,subdomain1,subdomain2",`.
+- you can specify multiple owners/hosts for the same domain using a comma separated list. For example with `"domain": "example.com,sub.example.com,sub2.example.com",`.
+⚠️ this is a bit different for DuckDNS and GoIP, see their respective documentation.
 
 ### Environment variables
 
+🆕 There are now flags equivalent for each variable below, for example `--log-level`.
+
 | Environment variable | Default | Description |
 | --- | --- | --- |
-| `CONFIG` | | One line JSON object containing the entire config (takes precendence over config.json file) if specified |
+| `CONFIG` | | One line JSON object containing the entire config (takes precedence over config.json file) if specified |
 | `PERIOD` | `5m` | Default period of IP address check, following [this format](https://golang.org/pkg/time/#ParseDuration) |
-| `IPV6_PREFIX` | `/128` | IPv6 prefix used to mask your public IPv6 address and your record IPv6 address. Ranges from `/0` to `/128` depending on your ISP. |
 | `PUBLICIP_FETCHERS` | `all` | Comma separated fetcher types to obtain the public IP address from `http` and `dns` |
 | `PUBLICIP_HTTP_PROVIDERS` | `all` | Comma separated providers to obtain the public IP address (ipv4 or ipv6). See the [Public IP section](#public-ip) |
 | `PUBLICIPV4_HTTP_PROVIDERS` | `all` | Comma separated providers to obtain the public IPv4 address only. See the [Public IP section](#public-ip) |
@@ -211,17 +285,23 @@ Note that:
 | `PUBLICIP_DNS_TIMEOUT` | `3s` | Public IP DNS query timeout |
 | `UPDATE_COOLDOWN_PERIOD` | `5m` | Duration to cooldown between updates for each record. This is useful to avoid being rate limited or banned. |
 | `HTTP_TIMEOUT` | `10s` | Timeout for all HTTP requests |
-| `LISTENING_PORT` | `8000` | Internal TCP listening port for the web UI |
+| `SERVER_ENABLED` | `yes` | Enable the web server and web UI |
+| `LISTENING_ADDRESS` | `:8000` | Internal TCP listening port for the web UI |
 | `ROOT_URL` | `/` | URL path to append to all paths to the webUI (i.e. `/ddns` for accessing `https://example.com/ddns` through a proxy) |
 | `HEALTH_SERVER_ADDRESS` | `127.0.0.1:9999` | Health server listening address |
+| `HEALTH_HEALTHCHECKSIO_BASE_URL` | `https://hc-ping.com` | Base URL for the [healthchecks.io](https://healthchecks.io) server |
+| `HEALTH_HEALTHCHECKSIO_UUID` | | UUID to idenfity with the [healthchecks.io](https://healthchecks.io) server |
 | `DATADIR` | `/updater/data` | Directory to read and write data files from internally |
+| `CONFIG_FILEPATH` | `/updater/data/config.json` | Path to the JSON configuration file |
 | `BACKUP_PERIOD` | `0` | Set to a period (i.e. `72h15m`) to enable zip backups of data/config.json and data/updates.json in a zip file |
 | `BACKUP_DIRECTORY` | `/updater/data` | Directory to write backup zip files to if `BACKUP_PERIOD` is not `0`. |
-| `RESOLVER_ADDRESS` | Your network DNS | A plaintext DNS address to use, such as `1.1.1.1:53`. This is useful for split dns, see [#389](https://github.com/qdm12/ddns-updater/issues/389) |
+| `RESOLVER_ADDRESS` | Your network DNS | A plaintext DNS address to use to resolve your domain names defined in your settings only. For example it can be `1.1.1.1:53`. This is useful for split dns, see [#389](https://github.com/qdm12/ddns-updater/issues/389) |
 | `LOG_LEVEL` | `info` | Level of logging, `debug`, `info`, `warning` or `error` |
 | `LOG_CALLER` | `hidden` | Show caller per log line, `hidden` or `short` |
-| `SHOUTRRR_ADDRESSES` |  | (optional) Comma separated list of [Shoutrrr addresses](https://containrrr.dev/shoutrrr/services/overview/) (notification services) |
+| `SHOUTRRR_ADDRESSES` | | (optional) Comma separated list of [Shoutrrr addresses](https://containrrr.dev/shoutrrr/v0.8/services/overview/) (notification services) |
+| `SHOUTRRR_DEFAULT_TITLE` | `DDNS Updater` | Default title for Shoutrrr notifications |
 | `TZ` | | Timezone to have accurate times, i.e. `America/Montreal` |
+| `UMASK` | System current umask | Umask to set for the program in octal, i.e. `0022` |
 
 #### Public IP
 
@@ -234,23 +314,39 @@ This allows you not to be blocked for making too many requests.
 You can otherwise customize it with the following:
 
 - `PUBLICIP_HTTP_PROVIDERS` gets your public IPv4 or IPv6 address. It can be one or more of the following:
-  - `opendns` using [https://diagnostic.opendns.com/myip](https://diagnostic.opendns.com/myip)
+  - `ipify` using [https://api64.ipify.org](https://api64.ipify.org)
   - `ifconfig` using [https://ifconfig.io/ip](https://ifconfig.io/ip)
   - `ipinfo` using [https://ipinfo.io/ip](https://ipinfo.io/ip)
-  - `ddnss` using [https://ddnss.de/meineip.php](https://ddnss.de/meineip.php)
-  - `google` using [https://domains.google.com/checkip](https://domains.google.com/checkip)
-  - You can also specify an HTTPS URL such as `https://ipinfo.io/ip`
+  - `spdyn` using [https://checkip.spdyn.de](https://checkip.spdyn.de/)
+  - `ipleak` using [https://ipleak.net/json](https://ipleak.net/json)
+  - `icanhazip` using [https://icanhazip.com](https://icanhazip.com)
+  - `ident` using [https://ident.me](https://ident.me)
+  - `nnev` using [https://ip.nnev.de](https://ip.nnev.de)
+  - `wtfismyip` using [https://wtfismyip.com/text](https://wtfismyip.com/text)
+  - `seeip` using [https://api.seeip.org](https://api.seeip.org)
+  - `changeip` using [https://ip.changeip.com](https://ip.changeip.com)
+  - You can also specify an HTTPS URL with prefix `url:` for example `url:https://ipinfo.io/ip`
 - `PUBLICIPV4_HTTP_PROVIDERS` gets your public IPv4 address only. It can be one or more of the following:
+  - `ipleak` using [https://ipv4.ipleak.net/json](https://ipv4.ipleak.net/json)
   - `ipify` using [https://api.ipify.org](https://api.ipify.org)
-  - `noip` using [http://ip1.dynupdate.no-ip.com](http://ip1.dynupdate.no-ip.com)
-  - You can also specify an HTTPS URL such as `https://ipinfo.io/ip`
+  - `icanhazip` using [https://ipv4.icanhazip.com](https://ipv4.icanhazip.com)
+  - `ident` using [https://v4.ident.me](https://v4.ident.me)
+  - `nnev` using [https://ip4.nnev.de](https://ip4.nnev.de)
+  - `wtfismyip` using [https://ipv4.wtfismyip.com/text](https://ipv4.wtfismyip.com/text)
+  - `seeip` using [https://ipv4.seeip.org](https://ipv4.seeip.org)
+  - You can also specify an HTTPS URL with prefix `url:` for example `url:https://ipinfo.io/ip`
 - `PUBLICIPV6_HTTP_PROVIDERS` gets your public IPv6 address only. It can be one or more of the following:
+  - `ipleak` using [https://ipv6.ipleak.net/json](https://ipv6.ipleak.net/json)
   - `ipify` using [https://api6.ipify.org](https://api6.ipify.org)
-  - `noip` using [http://ip1.dynupdate6.no-ip.com](http://ip1.dynupdate6.no-ip.com)
-  - You can also specify an HTTPS URL such as `https://ipinfo.io/ip`
+  - `icanhazip` using [https://ipv6.icanhazip.com](https://ipv6.icanhazip.com)
+  - `ident` using [https://v6.ident.me](https://v6.ident.me)
+  - `nnev` using [https://ip6.nnev.de](https://ip6.nnev.de)
+  - `wtfismyip` using [https://ipv6.wtfismyip.com/text](https://ipv6.wtfismyip.com/text)
+  - `seeip` using [https://ipv6.seeip.org](https://ipv6.seeip.org)
+  - You can also specify an HTTPS URL with prefix `url:` for example `url:https://ipinfo.io/ip`
 - `PUBLICIP_DNS_PROVIDERS` gets your public IPv4 address only or IPv6 address only or one of them (see #136). It can be one or more of the following:
-  - `google`
   - `cloudflare`
+  - `opendns`
 
 ### Host firewall
 
@@ -296,7 +392,7 @@ We could do an API call to get the record IP address every period, but that woul
 
 ## Testing
 
-- The automated healthcheck verifies all your records are up to date [using DNS lookups](https://github.com/qdm12/ddns-updater/blob/master/internal/healthcheck/healthcheck.go#L15)
+- The automated healthcheck verifies all your records are up to date [using DNS lookups](internal/health/check.go#L42)
 - You can also manually check, by:
     1. Going to your DNS management webpage
     1. Setting your record to `127.0.0.1`
@@ -308,7 +404,7 @@ We could do an API call to get the record IP address every period, but that woul
 You can build the image yourself with:
 
 ```sh
-docker build -t qmcgaw/ddns-updater https://github.com/qdm12/ddns-updater.git
+docker build -t ghcr.io/qdm12/ddns-updater https://github.com/qdm12/ddns-updater.git
 ```
 
 You can use optional build arguments with `--build-arg KEY=VALUE` from the table below:
@@ -318,19 +414,18 @@ You can use optional build arguments with `--build-arg KEY=VALUE` from the table
 | `UID` | `1000` | User ID running the container |
 | `GID` | `1000` | User group ID running the container |
 | `VERSION` | `unknown` | Version of the program and Docker image |
-| `BUILD_DATE` | `an unknown date` | Build date of the program and Docker image |
+| `CREATED` | `an unknown date` | Build date of the program and Docker image |
 | `COMMIT` | `unknown` | Commit hash of the program and Docker image |
 
 ## Development and contributing
 
-- [Contribute with code](https://github.com/qdm12/ddns-updater/blob/master/docs/contributing.md)
+- [Contribute with code](.github/CONTRIBUTING.md)
 - [Github workflows to know what's building](https://github.com/qdm12/ddns-updater/actions)
 - [List of issues and feature requests](https://github.com/qdm12/ddns-updater/issues)
-- [Kanban board](https://github.com/qdm12/ddns-updater/projects/1)
 
 ## License
 
-This repository is under an [MIT license](https://github.com/qdm12/ddns-updater/master/license)
+This repository is under an [MIT license](LICENSE)
 
 ## Used in external projects
 
@@ -340,7 +435,4 @@ This repository is under an [MIT license](https://github.com/qdm12/ddns-updater/
 
 Sponsor me on [Github](https://github.com/sponsors/qdm12) or donate to [paypal.me/qmcgaw](https://www.paypal.me/qmcgaw)
 
-[![https://github.com/sponsors/qdm12](https://raw.githubusercontent.com/qdm12/private-internet-access-docker/master/doc/sponsors.jpg)](https://github.com/sponsors/qdm12)
-[![https://www.paypal.me/qmcgaw](https://raw.githubusercontent.com/qdm12/private-internet-access-docker/master/doc/paypal.jpg)](https://www.paypal.me/qmcgaw)
-
 Many thanks to J. Famiglietti for supporting me financially 🥇👍

cmd/ddns-updater/main.go

@@ -0,0 +1,380 @@
+package main
+
+import (
+	"context"
+	"fmt"
+	"net/http"
+	"os"
+	"os/signal"
+	"strconv"
+	"syscall"
+	"time"
+	_ "time/tzdata"
+
+	_ "github.com/breml/rootcerts"
+	"github.com/qdm12/ddns-updater/internal/backup"
+	"github.com/qdm12/ddns-updater/internal/config"
+	"github.com/qdm12/ddns-updater/internal/data"
+	"github.com/qdm12/ddns-updater/internal/health"
+	"github.com/qdm12/ddns-updater/internal/healthchecksio"
+	"github.com/qdm12/ddns-updater/internal/models"
+	"github.com/qdm12/ddns-updater/internal/noop"
+	jsonparams "github.com/qdm12/ddns-updater/internal/params"
+	persistence "github.com/qdm12/ddns-updater/internal/persistence/json"
+	"github.com/qdm12/ddns-updater/internal/provider"
+	recordslib "github.com/qdm12/ddns-updater/internal/records"
+	"github.com/qdm12/ddns-updater/internal/resolver"
+	"github.com/qdm12/ddns-updater/internal/server"
+	"github.com/qdm12/ddns-updater/internal/shoutrrr"
+	"github.com/qdm12/ddns-updater/internal/system"
+	"github.com/qdm12/ddns-updater/internal/update"
+	"github.com/qdm12/ddns-updater/pkg/publicip"
+	"github.com/qdm12/goservices"
+	"github.com/qdm12/gosettings/reader"
+	"github.com/qdm12/gosplash"
+	"github.com/qdm12/log"
+)
+
+//nolint:gochecknoglobals
+var (
+	version = "unknown"
+	commit  = "unknown"
+	date    = "an unknown date"
+)
+
+func main() {
+	buildInfo := models.BuildInformation{
+		Version: version,
+		Commit:  commit,
+		Created: date,
+	}
+	logger := log.New()
+
+	reader := reader.New(reader.Settings{
+		HandleDeprecatedKey: func(source, oldKey, newKey string) {
+			logger.Warnf("%q key %s is deprecated, please use %q instead",
+				source, oldKey, newKey)
+		},
+	})
+
+	ctx := context.Background()
+	ctx, stop := signal.NotifyContext(ctx, syscall.SIGINT, syscall.SIGTERM, os.Interrupt)
+	ctx, cancel := context.WithCancel(ctx)
+
+	errorCh := make(chan error)
+	go func() {
+		errorCh <- _main(ctx, reader, os.Args, logger, buildInfo, time.Now)
+	}()
+
+	select {
+	case <-ctx.Done():
+		stop()
+		logger.Warn("Caught OS signal, shutting down")
+	case err := <-errorCh:
+		stop()
+		close(errorCh)
+		if err == nil { // expected exit such as healthcheck
+			os.Exit(0)
+		}
+		logger.Error(err.Error())
+		cancel()
+	}
+
+	const shutdownGracePeriod = 5 * time.Second
+	timer := time.NewTimer(shutdownGracePeriod)
+	select {
+	case err := <-errorCh:
+		if !timer.Stop() {
+			<-timer.C
+		}
+		if err != nil {
+			logger.Error(err.Error())
+		}
+		logger.Info("Shutdown successful")
+	case <-timer.C:
+		logger.Warn("Shutdown timed out")
+	}
+
+	os.Exit(1)
+}
+
+func _main(ctx context.Context, reader *reader.Reader, args []string, logger log.LoggerInterface,
+	buildInfo models.BuildInformation, timeNow func() time.Time,
+) (err error) {
+	if len(args) > 1 {
+		switch args[1] {
+		case "version", "-version", "--version":
+			fmt.Println(buildInfo.VersionString())
+			return nil
+		case "healthcheck":
+			// Running the program in a separate instance through the Docker
+			// built-in healthcheck, in an ephemeral fashion to query the
+			// long running instance of the program about its status
+
+			var healthSettings config.Health
+			healthSettings.Read(reader)
+			healthSettings.SetDefaults()
+			err = healthSettings.Validate()
+			if err != nil {
+				return fmt.Errorf("health settings: %w", err)
+			}
+
+			client := health.NewClient()
+			return client.Query(ctx, *healthSettings.ServerAddress)
+		}
+	}
+
+	printSplash(buildInfo)
+
+	config, err := readConfig(reader, logger)
+	if err != nil {
+		return err
+	}
+
+	if *config.Paths.Umask > 0 {
+		system.SetUmask(*config.Paths.Umask)
+	}
+
+	shoutrrrSettings := shoutrrr.Settings{
+		Addresses:    config.Shoutrrr.Addresses,
+		DefaultTitle: config.Shoutrrr.DefaultTitle,
+		Logger:       logger.New(log.SetComponent("shoutrrr")),
+	}
+	shoutrrrClient, err := shoutrrr.New(shoutrrrSettings)
+	if err != nil {
+		return fmt.Errorf("setting up Shoutrrr: %w", err)
+	}
+
+	persistentDB, err := persistence.NewDatabase(*config.Paths.DataDir)
+	if err != nil {
+		shoutrrrClient.Notify(err.Error())
+		return err
+	}
+
+	jsonReader := jsonparams.NewReader(logger)
+	providers, warnings, err := jsonReader.JSONProviders(*config.Paths.Config)
+	for _, w := range warnings {
+		logger.Warn(w)
+		shoutrrrClient.Notify(w)
+	}
+	if err != nil {
+		shoutrrrClient.Notify(err.Error())
+		return err
+	}
+
+	logProvidersCount(len(providers), logger)
+
+	client := &http.Client{Timeout: config.Client.Timeout}
+	defer client.CloseIdleConnections()
+
+	err = health.CheckHTTP(ctx, client)
+	if err != nil {
+		logger.Warn(err.Error())
+	}
+
+	records, err := readRecords(providers, persistentDB, logger, shoutrrrClient)
+	if err != nil {
+		return fmt.Errorf("reading records: %w", err)
+	}
+
+	db := data.NewDatabase(records, persistentDB)
+
+	httpSettings := publicip.HTTPSettings{
+		Enabled: *config.PubIP.HTTPEnabled,
+		Client:  client,
+		Options: config.PubIP.ToHTTPOptions(),
+	}
+	dnsSettings := publicip.DNSSettings{
+		Enabled: *config.PubIP.DNSEnabled,
+		Options: config.PubIP.ToDNSPOptions(),
+	}
+
+	ipGetter, err := publicip.NewFetcher(dnsSettings, httpSettings)
+	if err != nil {
+		return err
+	}
+
+	resolverSettings := resolver.Settings{
+		Address: config.Resolver.Address,
+		Timeout: config.Resolver.Timeout,
+	}
+	resolver, err := resolver.New(resolverSettings)
+	if err != nil {
+		return fmt.Errorf("creating resolver: %w", err)
+	}
+
+	hioClient := healthchecksio.New(client, config.Health.HealthchecksioBaseURL,
+		*config.Health.HealthchecksioUUID)
+
+	updater := update.NewUpdater(db, client, shoutrrrClient, logger, timeNow)
+	updaterService := update.NewService(db, updater, ipGetter, config.Update.Period,
+		config.Update.Cooldown, logger, resolver, timeNow, hioClient)
+
+	healthServer, err := createHealthServer(db, resolver, logger, *config.Health.ServerAddress)
+	if err != nil {
+		return fmt.Errorf("creating health server: %w", err)
+	}
+
+	server, err := createServer(ctx, config.Server, logger, db, updaterService)
+	if err != nil {
+		return fmt.Errorf("creating server: %w", err)
+	}
+
+	var backupService goservices.Service
+	backupLogger := logger.New(log.SetComponent("backup"))
+	backupService = backup.New(*config.Backup.Period, *config.Paths.DataDir,
+		*config.Backup.Directory, backupLogger)
+	backupService, err = goservices.NewRestarter(goservices.RestarterSettings{Service: backupService})
+	if err != nil {
+		return fmt.Errorf("creating backup restarter: %w", err)
+	}
+
+	servicesSequence, err := goservices.NewSequence(goservices.SequenceSettings{
+		ServicesStart: []goservices.Service{db, updaterService, healthServer, server, backupService},
+		ServicesStop:  []goservices.Service{server, healthServer, updaterService, backupService, db},
+	})
+	if err != nil {
+		return fmt.Errorf("creating services sequence: %w", err)
+	}
+
+	runError, startErr := servicesSequence.Start(ctx)
+	if startErr != nil {
+		return fmt.Errorf("starting services: %w", startErr)
+	}
+
+	// note: errors are logged within the goroutine,
+	// no need to collect the resulting errors.
+	go updaterService.ForceUpdate(ctx)
+
+	shoutrrrClient.Notify("Launched with " + strconv.Itoa(len(records)) + " records to watch")
+
+	select {
+	case <-ctx.Done():
+	case err = <-runError:
+		exitHealthchecksio(hioClient, logger, healthchecksio.Exit1)
+		shoutrrrClient.Notify(err.Error())
+		return fmt.Errorf("exiting due to critical error: %w", err)
+	}
+
+	err = servicesSequence.Stop()
+	if err != nil {
+		exitHealthchecksio(hioClient, logger, healthchecksio.Exit1)
+		shoutrrrClient.Notify(err.Error())
+		return fmt.Errorf("stopping failed: %w", err)
+	}
+
+	exitHealthchecksio(hioClient, logger, healthchecksio.Exit0)
+	return nil
+}
+
+func printSplash(buildInfo models.BuildInformation) {
+	announcementExp, err := time.Parse(time.RFC3339, "2024-10-15T00:00:00Z")
+	if err != nil {
+		panic(err)
+	}
+	splashSettings := gosplash.Settings{
+		User:         "qdm12",
+		Repository:   "ddns-updater",
+		Emails:       []string{"quentin.mcgaw@gmail.com"},
+		Version:      buildInfo.Version,
+		Commit:       buildInfo.Commit,
+		Created:      buildInfo.Created,
+		Announcement: "Public IP http provider GOOGLE is no longer working",
+		AnnounceExp:  announcementExp,
+		// Sponsor information
+		PaypalUser:    "qmcgaw",
+		GithubSponsor: "qdm12",
+	}
+	for _, line := range gosplash.MakeLines(splashSettings) {
+		fmt.Println(line)
+	}
+}
+
+func readConfig(reader *reader.Reader, logger log.LoggerInterface) (
+	config config.Config, err error,
+) {
+	err = config.Read(reader, logger)
+	if err != nil {
+		return config, fmt.Errorf("reading settings: %w", err)
+	}
+	config.SetDefaults()
+	err = config.Validate()
+	if err != nil {
+		return config, fmt.Errorf("settings validation: %w", err)
+	}
+
+	logger.Patch(config.Logger.ToOptions()...)
+	logger.Info(config.String())
+
+	return config, nil
+}
+
+func logProvidersCount(providersCount int, logger log.LeveledLogger) {
+	switch providersCount {
+	case 0:
+		logger.Warn("Found no setting to update record")
+	case 1:
+		logger.Info("Found single setting to update record")
+	default:
+		logger.Info("Found " + strconv.Itoa(providersCount) + " settings to update records")
+	}
+}
+
+func readRecords(providers []provider.Provider, persistentDB *persistence.Database,
+	logger log.LoggerInterface, shoutrrrClient *shoutrrr.Client) (
+	records []recordslib.Record, err error,
+) {
+	records = make([]recordslib.Record, len(providers))
+	for i, provider := range providers {
+		logger.Info("Reading history from database: domain " +
+			provider.Domain() + " owner " + provider.Owner() +
+			" " + provider.IPVersion().String())
+		events, err := persistentDB.GetEvents(provider.Domain(),
+			provider.Owner(), provider.IPVersion())
+		if err != nil {
+			shoutrrrClient.Notify(err.Error())
+			return nil, err
+		}
+		records[i] = recordslib.New(provider, events)
+	}
+	return records, nil
+}
+
+func exitHealthchecksio(hioClient *healthchecksio.Client,
+	logger log.LoggerInterface, state healthchecksio.State,
+) {
+	const timeout = 3 * time.Second
+	ctx, cancel := context.WithTimeout(context.Background(), timeout)
+	defer cancel()
+	err := hioClient.Ping(ctx, state)
+	if err != nil {
+		logger.Error(err.Error())
+	}
+}
+
+//nolint:ireturn
+func createHealthServer(db health.AllSelecter, resolver health.LookupIPer,
+	logger log.LoggerInterface, serverAddress string) (
+	healthServer goservices.Service, err error,
+) {
+	if serverAddress == "" {
+		return noop.New("healthcheck server"), nil
+	}
+	isHealthy := health.MakeIsHealthy(db, resolver)
+	healthLogger := logger.New(log.SetComponent("healthcheck server"))
+	return health.NewServer(serverAddress, healthLogger, isHealthy)
+}
+
+//nolint:ireturn
+func createServer(ctx context.Context, config config.Server,
+	logger log.LoggerInterface, db server.Database,
+	updaterService server.UpdateForcer) (
+	service goservices.Service, err error,
+) {
+	if !*config.Enabled {
+		return noop.New("server"), nil
+	}
+	serverLogger := logger.New(log.SetComponent("http server"))
+	return server.New(ctx, config.ListeningAddress, config.RootURL,
+		db, serverLogger, updaterService)
+}

cmd/updater/main.go

@@ -1,311 +0,0 @@
-package main
-
-import (
-	"context"
-	"errors"
-	"fmt"
-	"net/http"
-	"os"
-	"os/signal"
-	"path/filepath"
-	"strconv"
-	"strings"
-	"syscall"
-	"time"
-	_ "time/tzdata"
-
-	_ "github.com/breml/rootcerts"
-	"github.com/containrrr/shoutrrr"
-	"github.com/qdm12/ddns-updater/internal/backup"
-	"github.com/qdm12/ddns-updater/internal/config"
-	"github.com/qdm12/ddns-updater/internal/data"
-	"github.com/qdm12/ddns-updater/internal/health"
-	"github.com/qdm12/ddns-updater/internal/models"
-	jsonparams "github.com/qdm12/ddns-updater/internal/params"
-	persistence "github.com/qdm12/ddns-updater/internal/persistence/json"
-	recordslib "github.com/qdm12/ddns-updater/internal/records"
-	"github.com/qdm12/ddns-updater/internal/resolver"
-	"github.com/qdm12/ddns-updater/internal/server"
-	"github.com/qdm12/ddns-updater/internal/update"
-	"github.com/qdm12/ddns-updater/pkg/publicip"
-	"github.com/qdm12/golibs/connectivity"
-	"github.com/qdm12/golibs/params"
-	"github.com/qdm12/goshutdown"
-	"github.com/qdm12/gosplash"
-	"github.com/qdm12/log"
-)
-
-//nolint:gochecknoglobals
-var (
-	version   = "unknown"
-	commit    = "unknown"
-	buildDate = "an unknown date"
-)
-
-func main() {
-	buildInfo := models.BuildInformation{
-		Version:   version,
-		Commit:    commit,
-		BuildDate: buildDate,
-	}
-	env := params.New()
-	logger := log.New()
-
-	ctx := context.Background()
-	ctx, stop := signal.NotifyContext(ctx, syscall.SIGINT, syscall.SIGTERM, os.Interrupt)
-	ctx, cancel := context.WithCancel(ctx)
-
-	errorCh := make(chan error)
-	go func() {
-		errorCh <- _main(ctx, env, os.Args, logger, buildInfo, time.Now)
-	}()
-
-	select {
-	case <-ctx.Done():
-		stop()
-		logger.Warn("Caught OS signal, shutting down")
-	case err := <-errorCh:
-		stop()
-		close(errorCh)
-		if err == nil { // expected exit such as healthcheck
-			os.Exit(0)
-		}
-		logger.Error(err.Error())
-		cancel()
-	}
-
-	const shutdownGracePeriod = 5 * time.Second
-	timer := time.NewTimer(shutdownGracePeriod)
-	select {
-	case err := <-errorCh:
-		if !timer.Stop() {
-			<-timer.C
-		}
-		if err != nil {
-			logger.Error(err.Error())
-		}
-		logger.Info("Shutdown successful")
-	case <-timer.C:
-		logger.Warn("Shutdown timed out")
-	}
-
-	os.Exit(1)
-}
-
-var (
-	errShoutrrrSetup = errors.New("failed setting up Shoutrrr")
-)
-
-func _main(ctx context.Context, env params.Interface, args []string, logger log.LoggerInterface,
-	buildInfo models.BuildInformation, timeNow func() time.Time) (err error) {
-	if health.IsClientMode(args) {
-		// Running the program in a separate instance through the Docker
-		// built-in healthcheck, in an ephemeral fashion to query the
-		// long running instance of the program about its status
-		client := health.NewClient()
-		var healthConfig config.Health
-		_, err := healthConfig.Get(env)
-		if err != nil {
-			return err
-		}
-		return client.Query(ctx, healthConfig.Port)
-	}
-
-	announcementExp, err := time.Parse(time.RFC3339, "2021-07-22T00:00:00Z")
-	if err != nil {
-		return err
-	}
-	splashSettings := gosplash.Settings{
-		User:         "qdm12",
-		Repository:   "ddns-updater",
-		Emails:       []string{"quentin.mcgaw@gmail.com"},
-		Version:      buildInfo.Version,
-		Commit:       buildInfo.Commit,
-		BuildDate:    buildInfo.BuildDate,
-		Announcement: "",
-		AnnounceExp:  announcementExp,
-		// Sponsor information
-		PaypalUser:    "qmcgaw",
-		GithubSponsor: "qdm12",
-	}
-	for _, line := range gosplash.MakeLines(splashSettings) {
-		fmt.Println(line)
-	}
-
-	var config config.Config
-	warnings, err := config.Get(env)
-	for _, warning := range warnings {
-		logger.Warn(warning)
-	}
-	if err != nil {
-		return err
-	}
-
-	// Setup logger
-	options := []log.Option{log.SetLevel(config.Logger.Level)}
-	if config.Logger.Caller {
-		options = append(options, log.SetCallerFile(true), log.SetCallerLine(true))
-	}
-	logger.Patch(options...)
-
-	sender, err := shoutrrr.CreateSender(config.Shoutrrr.Addresses...)
-	if err != nil {
-		return fmt.Errorf("%w: %w", errShoutrrrSetup, err)
-	}
-	notify := func(message string) {
-		errs := sender.Send(message, &config.Shoutrrr.Params)
-		for i, err := range errs {
-			if err != nil {
-				destination := strings.Split(config.Shoutrrr.Addresses[i], ":")[0]
-				logger.Error(destination + ": " + err.Error())
-			}
-		}
-	}
-
-	persistentDB, err := persistence.NewDatabase(config.Paths.DataDir)
-	if err != nil {
-		notify(err.Error())
-		return err
-	}
-
-	jsonReader := jsonparams.NewReader(logger)
-	settings, warnings, err := jsonReader.JSONSettings(config.Paths.JSON)
-	for _, w := range warnings {
-		logger.Warn(w)
-		notify(w)
-	}
-	if err != nil {
-		notify(err.Error())
-		return err
-	}
-
-	L := len(settings)
-	switch L {
-	case 0:
-		logger.Warn("Found no setting to update record")
-	case 1:
-		logger.Info("Found single setting to update record")
-	default:
-		logger.Info("Found " + fmt.Sprint(len(settings)) + " settings to update records")
-	}
-
-	client := &http.Client{Timeout: config.Client.Timeout}
-
-	connectivity := connectivity.NewHTTPSGetChecker(client, http.StatusOK)
-	err = connectivity.Check(ctx, "https://github.com")
-	if err != nil {
-		logger.Warn(err.Error())
-	}
-
-	records := make([]recordslib.Record, len(settings))
-	for i, s := range settings {
-		logger.Info("Reading history from database: domain " +
-			s.Domain() + " host " + s.Host())
-		events, err := persistentDB.GetEvents(s.Domain(), s.Host())
-		if err != nil {
-			notify(err.Error())
-			return err
-		}
-		records[i] = recordslib.New(s, events)
-	}
-
-	defer client.CloseIdleConnections()
-	db := data.NewDatabase(records, persistentDB)
-	defer func() {
-		err := db.Close()
-		if err != nil {
-			logger.Error(err.Error())
-		}
-	}()
-
-	config.PubIP.HTTPSettings.Client = client
-
-	ipGetter, err := publicip.NewFetcher(config.PubIP.DNSSettings, config.PubIP.HTTPSettings)
-	if err != nil {
-		return err
-	}
-
-	resolver, err := resolver.New(config.Resolver)
-	if err != nil {
-		return fmt.Errorf("creating resolver: %w", err)
-	}
-
-	updater := update.NewUpdater(db, client, notify, logger)
-	runner := update.NewRunner(db, updater, ipGetter, config.Update.Period,
-		config.IPv6.Mask, config.Update.Cooldown, logger, resolver, timeNow)
-
-	runnerHandler, runnerCtx, runnerDone := goshutdown.NewGoRoutineHandler("runner")
-	go runner.Run(runnerCtx, runnerDone)
-
-	// note: errors are logged within the goroutine,
-	// no need to collect the resulting errors.
-	go runner.ForceUpdate(ctx)
-
-	isHealthy := health.MakeIsHealthy(db, resolver)
-	healthLogger := logger.New(log.SetComponent("healthcheck server"))
-	healthServer := health.NewServer(config.Health.ServerAddress,
-		healthLogger, isHealthy)
-	healthServerHandler, healthServerCtx, healthServerDone := goshutdown.NewGoRoutineHandler("health server")
-	go healthServer.Run(healthServerCtx, healthServerDone)
-
-	address := ":" + strconv.Itoa(int(config.Server.Port))
-	serverLogger := logger.New(log.SetComponent("http server"))
-	server := server.New(ctx, address, config.Server.RootURL, db, serverLogger, runner)
-	serverHandler, serverCtx, serverDone := goshutdown.NewGoRoutineHandler("server")
-	go server.Run(serverCtx, serverDone)
-	notify("Launched with " + strconv.Itoa(len(records)) + " records to watch")
-
-	backupHandler, backupCtx, backupDone := goshutdown.NewGoRoutineHandler("backup")
-	backupLogger := logger.New(log.SetComponent("backup"))
-	go backupRunLoop(backupCtx, backupDone, config.Backup.Period, config.Paths.DataDir, config.Backup.Directory,
-		backupLogger, timeNow)
-
-	shutdownGroup := goshutdown.NewGroupHandler("")
-	shutdownGroup.Add(runnerHandler, healthServerHandler, serverHandler, backupHandler)
-
-	<-ctx.Done()
-
-	err = shutdownGroup.Shutdown(context.Background())
-	if err != nil {
-		notify(err.Error())
-		return err
-	}
-	return nil
-}
-
-type InfoErroer interface {
-	Info(s string)
-	Error(s string)
-}
-
-func backupRunLoop(ctx context.Context, done chan<- struct{}, backupPeriod time.Duration,
-	dataDir, outputDir string, logger InfoErroer, timeNow func() time.Time) {
-	defer close(done)
-	if backupPeriod == 0 {
-		logger.Info("disabled")
-		return
-	}
-	logger.Info("each " + backupPeriod.String() +
-		"; writing zip files to directory " + outputDir)
-	ziper := backup.NewZiper()
-	timer := time.NewTimer(backupPeriod)
-	for {
-		fileName := "ddns-updater-backup-" + strconv.Itoa(int(timeNow().UnixNano())) + ".zip"
-		zipFilepath := filepath.Join(outputDir, fileName)
-		err := ziper.ZipFiles(
-			zipFilepath,
-			filepath.Join(dataDir, "updates.json"),
-			filepath.Join(dataDir, "config.json"),
-		)
-		if err != nil {
-			logger.Error(err.Error())
-		}
-		select {
-		case <-timer.C:
-			timer.Reset(backupPeriod)
-		case <-ctx.Done():
-			timer.Stop()
-			return
-		}
-	}
-}

config.json

@@ -3,7 +3,6 @@
         {
             "provider": "namecheap",
             "domain": "example.com",
-            "host": "@",
             "password": "e5322165c1d74692bfa6d807100c0310"
         },
         {
@@ -13,8 +12,7 @@
         },
         {
             "provider": "godaddy",
-            "domain": "example.org",
-            "host": "subdomain",
+            "domain": "subdomain.example.org",
             "key": "aaaaaaaaaaaaaaaa",
             "secret": "aaaaaaaaaaaaaaaa"
         },

docker-compose.yml

@@ -1,7 +1,7 @@
 version: "3.7"
 services:
   ddns-updater:
-    image: qmcgaw/ddns-updater
+    image: ghcr.io/qdm12/ddns-updater
     container_name: ddns-updater
     network_mode: bridge
     ports:
@@ -21,7 +21,7 @@ services:
       - HTTP_TIMEOUT=10s
 
       # Web UI
-      - LISTENING_PORT=8000
+      - LISTENING_ADDRESS=:8000
       - ROOT_URL=/
 
       # Backup

docs/aliyun.md

@@ -10,10 +10,10 @@
     {
       "provider": "aliyun",
       "domain": "domain.com",
-      "host": "@",
       "access_key_id": "your access_key_id",
       "access_secret": "your access_secret",
-      "ip_version": "ipv4"
+      "ip_version": "ipv4",
+      "ipv6_suffix": ""
     }
   ]
 }
@@ -21,13 +21,13 @@
 
 ### Compulsory parameters
 
-- `"domain"`
-- `"host"` is your host and can be a subdomain or `"@"`
+- `"domain"` is the domain to update. It can be `example.com` (root domain) or `sub.example.com` (subdomain of `example.com`).
 - `"access_key_id"`
 - `"access_secret"`
 
 ### Optional parameters
 
-- `"ip_version"` can be `ipv4` (A records) or `ipv6` (AAAA records), defaults to `ipv4 or ipv6`
+- `"ip_version"` can be `ipv4` (A records), or `ipv6` (AAAA records) or `ipv4 or ipv6` (update one of the two, depending on the public ip found). It defaults to `ipv4 or ipv6`.
+- `"ipv6_suffix"` is the IPv6 interface identifier suffix to use. It can be for example `0:0:0:0:72ad:8fbb:a54e:bedd/64`. If left empty, it defaults to no suffix and the raw public IPv6 address obtained is used in the record updating.
 
 ## Domain setup

docs/allinkl.md

@@ -9,10 +9,11 @@
   "settings": [
     {
       "provider": "allinkl",
-      "domain": "domain.com",
-      "host": "host",
+      "domain": "sub.domain.com",
       "username": "dynXXXXXXX",
-      "password": "password"
+      "password": "password",
+      "ip_version": "ipv4",
+      "ipv6_suffix": ""
     }
   ]
 }
@@ -20,9 +21,13 @@
 
 ### Compulsory parameters
 
-- `"domain"`
-- `"host"` is your host (subdomain)
+- `"domain"` is the domain to update. It can be `example.com` (root domain) or `sub.example.com` (subdomain of `example.com`).
 - `"username"` username (usually starts with dyn followed by numbers)
 - `"password"` password in plain text
 
+### Optional parameters
+
+- `"ip_version"` can be `ipv4` (A records), or `ipv6` (AAAA records) or `ipv4 or ipv6` (update one of the two, depending on the public ip found). It defaults to `ipv4 or ipv6`.
+- `"ipv6_suffix"` is the IPv6 interface identifier suffix to use. It can be for example `0:0:0:0:72ad:8fbb:a54e:bedd/64`. If left empty, it defaults to no suffix and the raw public IPv6 address obtained is used in the record updating.
+
 ## Domain setup

docs/changeip.md

@@ -0,0 +1,33 @@
+# ChangeIP
+
+## Configuration
+
+### Example
+
+```json
+{
+  "settings": [
+    {
+      "provider": "changeip",
+      "domain": "sub.domain.com",
+      "username": "dynXXXXXXX",
+      "password": "password",
+      "ip_version": "ipv4",
+      "ipv6_suffix": ""
+    }
+  ]
+}
+```
+
+### Compulsory parameters
+
+- `"domain"` is the domain to update. It can be `example.com` (root domain) or `sub.example.com` (subdomain of `example.com`).
+- `"username"`
+- `"password"`
+
+### Optional parameters
+
+- `"ip_version"` can be `ipv4` (A records), or `ipv6` (AAAA records) or `ipv4 or ipv6` (update one of the two, depending on the public ip found). It defaults to `ipv4 or ipv6`.
+- `"ipv6_suffix"` is the IPv6 interface identifier suffix to use. It can be for example `0:0:0:0:72ad:8fbb:a54e:bedd/64`. If left empty, it defaults to no suffix and the raw public IPv6 address obtained is used in the record updating.
+
+## Domain setup

docs/cloudflare.md

@@ -11,10 +11,10 @@
       "provider": "cloudflare",
       "zone_identifier": "some id",
       "domain": "domain.com",
-      "host": "@",
       "ttl": 600,
       "token": "yourtoken",
-      "ip_version": "ipv4"
+      "ip_version": "ipv4",
+      "ipv6_suffix": ""
     }
   ]
 }
@@ -23,18 +23,18 @@
 ### Compulsory parameters
 
 - `"zone_identifier"` is the Zone ID of your site, from the domain overview page written as *Zone ID*
-- `"domain"`
-- `"host"` is your host. It should be left to `"@"`, since subdomain and wildcards (`"*"`) are not really supported by Cloudflare it seems.
+- `"domain"` is the domain to update. It can be `example.com` (root domain), `sub.example.com` (subdomain of `example.com`) or `*.example.com` for the wildcard.
 See [this issue comment for context](https://github.com/qdm12/ddns-updater/issues/243#issuecomment-928313949). This is left as is for compatibility.
 - `"ttl"` integer value for record TTL in seconds (specify 1 for automatic)
-- One of the following ([how to find API keys](https://support.cloudflare.com/hc/en-us/articles/200167836-Where-do-I-find-my-Cloudflare-API-key-)):
-    - Email `"email"` and Global API Key `"key"`
-    - User service key `"user_service_key"`
-    - API Token `"token"`, configured with DNS edit permissions for your DNS name's zone
+- One of the following ([how to find API keys](https://developers.cloudflare.com/fundamentals/api/get-started/)):
+  - Email `"email"` and Global API Key `"key"`
+  - User service key `"user_service_key"`
+  - API Token `"token"`, configured with DNS edit permissions for your DNS name's zone
 
 ### Optional parameters
 
 - `"proxied"` can be set to `true` to use the proxy services of Cloudflare
-- `"ip_version"` can be `ipv4` (A records) or `ipv6` (AAAA records), and defaults to `ipv4 or ipv6`
+- `"ip_version"` can be `ipv4` (A records), or `ipv6` (AAAA records) or `ipv4 or ipv6` (update one of the two, depending on the public ip found). It defaults to `ipv4 or ipv6`.
+- `"ipv6_suffix"` is the IPv6 interface identifier suffix to use. It can be for example `0:0:0:0:72ad:8fbb:a54e:bedd/64`. If left empty, it defaults to no suffix and the raw public IPv6 address obtained is used in the record updating.
 
 Special thanks to @Starttoaster for helping out with the [documentation](https://gist.github.com/Starttoaster/07d568c2a99ad7631dd776688c988326) and testing.

docs/contributing.md

@@ -1,52 +0,0 @@
-# Contributing
-
-## Table of content
-
-1. [Setup](#Setup)
-1. [Commands available](#Commands-available)
-1. [Guidelines](#Guidelines)
-
-## Setup
-
-### Using VSCode and Docker
-
-That should be easier and better than a local setup, although it might use more memory if you're not on Linux.
-
-1. Install [Docker](https://docs.docker.com/install/)
-    - On Windows, share a drive with Docker Desktop and have the project on that partition
-    - On OSX, share your project directory with Docker Desktop
-1. With [Visual Studio Code](https://code.visualstudio.com/download), install the [remote containers extension](https://marketplace.visualstudio.com/items?itemName=ms-vscode-remote.remote-containers)
-1. In Visual Studio Code, press on `F1` and select `Remote-Containers: Open Folder in Container...`
-1. Your dev environment is ready to go!... and it's running in a container :+1:
-
-### Locally
-
-Install [Go](https://golang.org/dl/), [Docker](https://www.docker.com/products/docker-desktop) and [Git](https://git-scm.com/downloads); then:
-
-```sh
-go mod download
-```
-
-And finally install [golangci-lint](https://github.com/golangci/golangci-lint#install).
-
-You might want to use an editor such as [Visual Studio Code](https://code.visualstudio.com/download) with the [Go extension](https://code.visualstudio.com/docs/languages/go). Working settings are already in [.vscode/settings.json](../.vscode/settings.json).
-
-## Build and Run
-
-```sh
-go build -o app cmd/updater/main.go
-./app
-```
-
-## Commands available
-
-- Test the code: `go test ./...`
-- Lint the code `golangci-lint run`
-- Build the Docker image (tests and lint included): `docker build -t qmcgaw/ddns-updater .`
-- Run the Docker container: `docker run -it --rm -v /yourpath/data:/updater/data qmcgaw/ddns-updater`
-
-## Guidelines
-
-The Go code is in the Go file [cmd/updater/main.go](../cmd/updater/main.go) and the [internal directory](../internal), you might want to start reading the main.go file.
-
-See the [Contributing document](../.github/CONTRIBUTING.md) for more information on how to contribute to this repository.

docs/custom.md

@@ -0,0 +1,40 @@
+# Custom provider
+
+The custom provider allows to configure a URL with a few additional parameters to update your records.
+
+For now it sends an HTTP GET request to the URL given with some additional parameters.
+Feel free to open issues to extend its configuration options.
+
+## Configuration
+
+### Example
+
+```json
+{
+  "settings": [
+    {
+      "provider": "custom",
+      "domain": "example.com",
+      "url": "https://example.com/update?domain=example.com&host=@&username=username&client_key=client_key",
+      "ipv4key": "ipv4",
+      "ipv6key": "ipv6",
+      "success_regex": "good",
+      "ip_version": "ipv4",
+      "ipv6_suffix": ""
+    }
+  ]
+}
+```
+
+### Compulsory parameters
+
+- `"domain"` is the domain to update. It can be `example.com` (root domain), `sub.example.com` (subdomain of `example.com`) or `*.example.com` for the wildcard.
+- `"url"` is the URL to update your records and should contain all the information EXCEPT the IP address to update
+- `"ipv4key"` is the URL query parameter name for the IPv4 address, for example `ipv4` will be added to the URL with `&ipv4=1.2.3.4`. In the rare case you do not wish to send an IPv4 query parameter to the registrar API when updating your A (IPv4) record, leave it to `"ipv4key": ""`.
+- `"ipv6key"` is the URL query parameter name for the IPv6 address, for example `ipv6` will be added to the URL with `&ipv6=::aaff`. In the rare case you do not wish to send an IPv6 query parameter to the registrar API when updating your AAAA (IPv6) record, leave it to `"ipv6key": ""`.
+- `"success_regex"` is a regular expression to match the response from the server to determine if the update was successful. You can use [regex101.com](https://regex101.com/) to find the regular expression you want. For example `good` would match any response containing the word "good".
+
+### Optional parameters
+
+- `"ip_version"` can be `ipv4` (A records), or `ipv6` (AAAA records) or `ipv4 or ipv6` (update one of the two, depending on the public ip found). It defaults to `ipv4 or ipv6`.
+- `"ipv6_suffix"` is the IPv6 interface identifier suffix to use. It can be for example `0:0:0:0:72ad:8fbb:a54e:bedd/64`. If left empty, it defaults to no suffix and the raw public IPv6 address obtained is used in the record updating.

docs/dd24.md

@@ -10,9 +10,9 @@
     {
       "provider": "dd24",
       "domain": "domain.com",
-      "host": "@",
       "password": "password",
-      "ip_version": "ipv4"
+      "ip_version": "ipv4",
+      "ipv6_suffix": ""
     }
   ]
 }
@@ -20,10 +20,10 @@
 
 ### Compulsory parameters
 
-- `"domain"`
-- `"host"` is your host and can be a subdomain or `"@"`
+- `"domain"` is the domain to update. It can be `example.com` (root domain) or `sub.example.com` (subdomain of `example.com`).
 - `"password"` is your password
 
 ### Optional parameters
 
-- `"ip_version"` can be `ipv4` (A records) or `ipv6` (AAAA records), defaults to `ipv4 or ipv6`
+- `"ip_version"` can be `ipv4` (A records), or `ipv6` (AAAA records) or `ipv4 or ipv6` (update one of the two, depending on the public ip found). It defaults to `ipv4 or ipv6`.
+- `"ipv6_suffix"` is the IPv6 interface identifier suffix to use. It can be for example `0:0:0:0:72ad:8fbb:a54e:bedd/64`. If left empty, it defaults to no suffix and the raw public IPv6 address obtained is used in the record updating.

docs/ddnss.de.md

@@ -9,13 +9,12 @@
   "settings": [
     {
       "provider": "ddnss",
-      "provider_ip": true,
       "domain": "domain.com",
-      "host": "@",
       "username": "user",
       "password": "password",
       "dual_stack": false,
-      "ip_version": "ipv4"
+      "ip_version": "ipv4",
+      "ipv6_suffix": ""
     }
   ]
 }
@@ -23,16 +22,16 @@
 
 ### Compulsory parameters
 
-- `"domain"`
-- `"host"` is your host and can be a subdomain or `"@"`
+- `"domain"` is the domain to update. It can be `example.com` (root domain) or `sub.example.com` (subdomain of `example.com`).
 - `"username"`
 - `"password"`
 
 ### Optional parameters
 
-- `"dual_stack"` can be set to `true` **if you have turn on dual stack for your record** to update both IPv4 and IPv6 addresses. Note it is ignored if `"provider_ip": true`. More precisely:
+- `"dual_stack"` can be set to `true` **if you have turn on dual stack for your record** to update both IPv4 and IPv6 addresses. More precisely:
   - if it is `false`, the updates are done using the `ip` parameter and only one IP address can be set (ipv4 or ipv6, whichever is last sent).
   - if it is `true`, the updates are done using the `ip` and `ip6` parameters, for IPv4 and IPv6 respectively, and both can be set on the same record
-- `"ip_version"` can be `ipv4` (A records) or `ipv6` (AAAA records), defaults to `ipv4 or ipv6`
+- `"ip_version"` can be `ipv4` (A records), or `ipv6` (AAAA records) or `ipv4 or ipv6` (update one of the two, depending on the public ip found). It defaults to `ipv4 or ipv6`.
+- `"ipv6_suffix"` is the IPv6 interface identifier suffix to use. It can be for example `0:0:0:0:72ad:8fbb:a54e:bedd/64`. If left empty, it defaults to no suffix and the raw public IPv6 address obtained is used in the record updating.
 
 ## Domain setup

docs/desec.md

@@ -0,0 +1,33 @@
+# deSEC
+
+## Configuration
+
+### Example
+
+```json
+{
+  "settings": [
+    {
+      "provider": "desec",
+      "domain": "sub.dedyn.io",
+      "token": "token",
+      "ip_version": "ipv4",
+      "ipv6_suffix": ""
+    }
+  ]
+}
+```
+
+### Compulsory parameters
+
+- `"domain"` is the domain to update. It can be `example.com` (root domain), `sub.example.com` (subdomain of `example.com`) or `*.example.com` for the wildcard.
+- `"token"` is your token that you can create [here](https://desec.io/tokens)
+
+### Optional parameters
+
+- `"ip_version"` can be `ipv4` (A records), or `ipv6` (AAAA records) or `ipv4 or ipv6` (update one of the two, depending on the public ip found). It defaults to `ipv4 or ipv6`.
+- `"ipv6_suffix"` is the IPv6 interface identifier suffix to use. It can be for example `0:0:0:0:72ad:8fbb:a54e:bedd/64`. If left empty, it defaults to no suffix and the raw public IPv6 address obtained is used in the record updating.
+
+## Domain setup
+
+[desec.io/domains](https://desec.io/domains)

docs/digitalocean.md

@@ -10,9 +10,9 @@
     {
       "provider": "digitalocean",
       "domain": "domain.com",
-      "host": "@",
       "token": "yourtoken",
-      "ip_version": "ipv4"
+      "ip_version": "ipv4",
+      "ipv6_suffix": ""
     }
   ]
 }
@@ -20,12 +20,12 @@
 
 ### Compulsory parameters
 
-- `"domain"`
-- `"host"` is your host and can be a subdomain or `"@"` or `"*"`
+- `"domain"` is the domain to update. It can be `example.com` (root domain), `sub.example.com` (subdomain of `example.com`) or `*.example.com` for the wildcard.
 - `"token"` is your token that you can create [here](https://cloud.digitalocean.com/settings/applications)
 
 ### Optional parameters
 
-- `"ip_version"` can be `ipv4` (A records) or `ipv6` (AAAA records), defaults to `ipv4 or ipv6`
+- `"ip_version"` can be `ipv4` (A records), or `ipv6` (AAAA records) or `ipv4 or ipv6` (update one of the two, depending on the public ip found). It defaults to `ipv4 or ipv6`.
+- `"ipv6_suffix"` is the IPv6 interface identifier suffix to use. It can be for example `0:0:0:0:72ad:8fbb:a54e:bedd/64`. If left empty, it defaults to no suffix and the raw public IPv6 address obtained is used in the record updating.
 
 ## Domain setup

docs/dnsomatic.md

@@ -10,9 +10,10 @@
     {
       "provider": "dnsomatic",
       "domain": "domain.com",
-      "host": "@",
-      "token": "yourtoken",
-      "ip_version": "ipv4"
+      "username": "username",
+      "password": "password",
+      "ip_version": "ipv4",
+      "ipv6_suffix": ""
     }
   ]
 }
@@ -20,13 +21,13 @@
 
 ### Compulsory parameters
 
-- `"domain"`
-- `"host"` is your host and can be a subdomain or `"@"` or `"*"`
+- `"domain"` is the domain to update. It can be `example.com` (root domain), `sub.example.com` (subdomain of `example.com`) or `*.example.com` for the wildcard.
 - `"username"`
 - `"password"`
 
 ### Optional parameters
 
-- `"ip_version"` can be `ipv4` (A records) or `ipv6` (AAAA records), defaults to `ipv4 or ipv6`
+- `"ip_version"` can be `ipv4` (A records), or `ipv6` (AAAA records) or `ipv4 or ipv6` (update one of the two, depending on the public ip found). It defaults to `ipv4 or ipv6`.
+- `"ipv6_suffix"` is the IPv6 interface identifier suffix to use. It can be for example `0:0:0:0:72ad:8fbb:a54e:bedd/64`. If left empty, it defaults to no suffix and the raw public IPv6 address obtained is used in the record updating.
 
 ## Domain setup

docs/dnspod.md

@@ -10,9 +10,9 @@
     {
       "provider": "dnspod",
       "domain": "domain.com",
-      "host": "@",
       "token": "yourtoken",
-      "ip_version": "ipv4"
+      "ip_version": "ipv4",
+      "ipv6_suffix": ""
     }
   ]
 }
@@ -20,12 +20,12 @@
 
 ### Compulsory parameters
 
-- `"domain"`
-- `"host"` is your host and can be a subdomain or `"@"`
+- `"domain"` is the domain to update. It can be `example.com` (root domain) or `sub.example.com` (subdomain of `example.com`).
 - `"token"`
 
 ### Optional parameters
 
-- `"ip_version"` can be `ipv4` (A records) or `ipv6` (AAAA records), defaults to `ipv4 or ipv6`
+- `"ip_version"` can be `ipv4` (A records), or `ipv6` (AAAA records) or `ipv4 or ipv6` (update one of the two, depending on the public ip found). It defaults to `ipv4 or ipv6`.
+- `"ipv6_suffix"` is the IPv6 interface identifier suffix to use. It can be for example `0:0:0:0:72ad:8fbb:a54e:bedd/64`. If left empty, it defaults to no suffix and the raw public IPv6 address obtained is used in the record updating.
 
 ## Domain setup

docs/domeneshop.md

@@ -0,0 +1,31 @@
+# Domeneshop.no
+
+## Configuration
+
+### Example
+
+```json
+{
+  "settings": [
+    {
+      "provider": "domeneshop",
+      "domain": "domain.com,seconddomain.com",
+      "token": "token",
+      "secret": "secret",
+      "ip_version": "ipv4",
+      "ipv6_suffix": ""
+    }
+  ]
+}
+```
+
+### Compulsory parameters
+
+- `"domain"` is the domain to update. It can be `example.com` (root domain) or `sub.example.com` (subdomain of `example.com`)
+- `"token"` See [api.domeneshop.no/docs/](https://api.domeneshop.no/docs/) for instructions on how to generate credentials.
+- `"secret"`
+
+### Optional parameters
+
+- `"ip_version"` can be `ipv4` (A records), or `ipv6` (AAAA records) or `ipv4 or ipv6` (update one of the two, depending on the public ip found). It defaults to `ipv4 or ipv6`.
+- `"ipv6_suffix"` is the IPv6 interface identifier suffix to use. It can be for example `0:0:0:0:72ad:8fbb:a54e:bedd/64`. If left empty, it defaults to no suffix and the raw public IPv6 address obtained is used in the record updating.

docs/dondominio.md

@@ -10,10 +10,10 @@
     {
       "provider": "dondominio",
       "domain": "domain.com",
-      "name": "something",
       "username": "username",
-      "password": "password",
-      "ip_version": "ipv4"
+      "key": "key",
+      "ip_version": "ipv4",
+      "ipv6_suffix": ""
     }
   ]
 }
@@ -21,13 +21,15 @@
 
 ### Compulsory parameters
 
-- `"domain"`
-- `"name"` is the name server associated with the domain
+- `"domain"` is the domain to update. It can be `example.com` (root domain), `sub.example.com` (subdomain of `example.com`) or `*.example.com` for the wildcard.
 - `"username"`
 - `"password"`
 
 ### Optional parameters
 
-- `"ip_version"` can be `ipv4` (A records) or `ipv6` (AAAA records), defaults to `ipv4 or ipv6`
+- `"ip_version"` can be `ipv4` (A records), or `ipv6` (AAAA records) or `ipv4 or ipv6` (update one of the two, depending on the public ip found). It defaults to `ipv4 or ipv6`.
+- `"ipv6_suffix"` is the IPv6 interface identifier suffix to use. It can be for example `0:0:0:0:72ad:8fbb:a54e:bedd/64`. If left empty, it defaults to no suffix and the raw public IPv6 address obtained is used in the record updating.
 
 ## Domain setup
+
+See [dondominio.dev/en/dondns/docs/api/#before-start](https://dondominio.dev/en/dondns/docs/api/#before-start)

docs/dreamhost.md

@@ -10,9 +10,9 @@
     {
       "provider": "dreamhost",
       "domain": "domain.com",
-      "host": "@",
       "key": "key",
-      "ip_version": "ipv4"
+      "ip_version": "ipv4",
+      "ipv6_suffix": ""
     }
   ]
 }
@@ -25,7 +25,8 @@
 
 ### Optional parameters
 
-- `"host"` is your host and can be a subdomain or `"@"`. It defaults to `"@"`.
-- `"ip_version"` can be `ipv4` (A records) or `ipv6` (AAAA records), defaults to `ipv4 or ipv6`
+- `"domain"` is the domain to update. It can be `example.com` (root domain) or `sub.example.com` (subdomain of `example.com`).
+- `"ip_version"` can be `ipv4` (A records), or `ipv6` (AAAA records) or `ipv4 or ipv6` (update one of the two, depending on the public ip found). It defaults to `ipv4 or ipv6`.
+- `"ipv6_suffix"` is the IPv6 interface identifier suffix to use. It can be for example `0:0:0:0:72ad:8fbb:a54e:bedd/64`. If left empty, it defaults to no suffix and the raw public IPv6 address obtained is used in the record updating.
 
 ## Domain setup

docs/duckdns.md

@@ -9,10 +9,10 @@
   "settings": [
     {
       "provider": "duckdns",
-      "host": "host",
+      "domain": "sub.duckdns.org",
       "token": "token",
       "ip_version": "ipv4",
-      "provider_ip": true
+      "ipv6_suffix": ""
     }
   ]
 }
@@ -20,16 +20,19 @@
 
 ### Compulsory parameters
 
-- `"host"` is your host, for example `subdomain` for `subdomain.duckdns.org`
+- `"domain"` is the domain to update. The [eTLD](https://developer.mozilla.org/en-US/docs/Glossary/eTLD) must be `duckdns.org`. For example:
+  - for the root owner/host `@`, it would be `mydomain.duckdns.org`
+  - for the owner/host `sub`, it would be `sub.mydomain.duckdns.org`
+  - for multiple domains, it can be `sub1.mydomain.duckdns.org,sub2.mydomain.duckdns.org` BUT it cannot be `a.duckdns.org,b.duckdns.org`, since the effective domains would be `a.duckdns.org` and `b.duckdns.org`
 - `"token"`
 
 ### Optional parameters
 
-- `"ip_version"` can be `ipv4` (A records) or `ipv6` (AAAA records), defaults to `ipv4 or ipv6`
-- `"provider_ip"` can be set to `true` to let your DNS provider determine your IPv4 address (**NOT** your IPv6 address) automatically when you send an update request, without sending the new IP address detected by the program in the request.
+- `"ip_version"` can be `ipv4` (A records), or `ipv6` (AAAA records) or `ipv4 or ipv6` (update one of the two, depending on the public ip found). It defaults to `ipv4 or ipv6`.
+- `"ipv6_suffix"` is the IPv6 interface identifier suffix to use. It can be for example `0:0:0:0:72ad:8fbb:a54e:bedd/64`. If left empty, it defaults to no suffix and the raw public IPv6 address obtained is used in the record updating.
 
 ## Domain setup
 
-[![DuckDNS Website](../readme/duckdns.png)](https://duckdns.org)
+[![DuckDNS Website](../readme/duckdns.png)](https://www.duckdns.org/)
 
-*See the [duckdns website](https://duckdns.org)*
+*See the [duckdns website](https://www.duckdns.org/)*

docs/dyndns.md

@@ -10,11 +10,10 @@
     {
       "provider": "dyn",
       "domain": "domain.com",
-      "host": "@",
       "username": "username",
       "client_key": "client_key",
       "ip_version": "ipv4",
-      "provider_ip": true
+      "ipv6_suffix": ""
     }
   ]
 }
@@ -22,14 +21,13 @@
 
 ### Compulsory parameters
 
-- `"domain"`
-- `"host"` is your host and can be a subdomain or `"@"`
+- `"domain"` is the domain to update. It can be `example.com` (root domain), `sub.example.com` (subdomain of `example.com`) or `*.example.com` for the wildcard.
 - `"username"`
 - `"client_key"`
 
 ### Optional parameters
 
-- `"ip_version"` can be `ipv4` (A records) or `ipv6` (AAAA records), defaults to `ipv4 or ipv6`
-- `"provider_ip"` can be set to `true` to let your DNS provider determine your IPv4 address (and/or IPv6 address) automatically when you send an update request, without sending the new IP address detected by the program in the request.
+- `"ip_version"` can be `ipv4` (A records), or `ipv6` (AAAA records) or `ipv4 or ipv6` (update one of the two, depending on the public ip found). It defaults to `ipv4 or ipv6`.
+- `"ipv6_suffix"` is the IPv6 interface identifier suffix to use. It can be for example `0:0:0:0:72ad:8fbb:a54e:bedd/64`. If left empty, it defaults to no suffix and the raw public IPv6 address obtained is used in the record updating.
 
 ## Domain setup

docs/dynu.md

@@ -10,12 +10,11 @@
     {
       "provider": "dynu",
       "domain": "domain.com",
-      "host": "@",
       "group": "group",
       "username": "username",
       "password": "password",
       "ip_version": "ipv4",
-      "provider_ip": true
+      "ipv6_suffix": ""
     }
   ]
 }
@@ -23,15 +22,14 @@
 
 ### Compulsory parameters
 
-- `"domain"`
-- `"host"` is your host and can be a subdomain or `"@"`
+- `"domain"` is the domain to update. It can be `example.com` (root domain) or `sub.example.com` (subdomain of `example.com`).
 - `"username"`
 - `"password"` could be plain text or password in MD5 or SHA256 format (There's also an option for setting a password for IP Update only)
 
 ### Optional parameters
 
-- `"ip_version"` can be `ipv4` (A records) or `ipv6` (AAAA records), defaults to `ipv4 or ipv6`
-- `"provider_ip"` can be set to `true` to let your DNS provider determine your IPv4 address (and/or IPv6 address) automatically when you send an update request, without sending the new IP address detected by the program in the request.
+- `"ip_version"` can be `ipv4` (A records), or `ipv6` (AAAA records) or `ipv4 or ipv6` (update one of the two, depending on the public ip found). It defaults to `ipv4 or ipv6`.
+- `"ipv6_suffix"` is the IPv6 interface identifier suffix to use. It can be for example `0:0:0:0:72ad:8fbb:a54e:bedd/64`. If left empty, it defaults to no suffix and the raw public IPv6 address obtained is used in the record updating.
 - `"group"` specify the Group for which you want to set the IP (will update any domains and subdomains in the same group)
 
 ## Domain setup

docs/dynv6.md

@@ -10,10 +10,9 @@
     {
       "provider": "dynv6",
       "domain": "domain.com",
-      "host": "@",
       "token": "token",
       "ip_version": "ipv4",
-      "provider_ip": true
+      "ipv6_suffix": ""
     }
   ]
 }
@@ -21,13 +20,12 @@
 
 ### Compulsory parameters
 
-- `"domain"`
-- `"host"` is your host and can be a subdomain or `"@"`
+- `"domain"` is the domain to update. It can be `example.com` (root domain) or `sub.example.com` (subdomain of `example.com`).
 - `"token"` that you can obtain [here](https://dynv6.com/keys#token)
 
 ### Optional parameters
 
-- `"ip_version"` can be `ipv4` (A records) or `ipv6` (AAAA records), defaults to `ipv4 or ipv6`
-- `"provider_ip"` can be set to `true` to let your DNS provider determine your IPv4 address (and/or IPv6 address) automatically when you send an update request, without sending the new IP address detected by the program in the request.
+- `"ip_version"` can be `ipv4` (A records), or `ipv6` (AAAA records) or `ipv4 or ipv6` (update one of the two, depending on the public ip found). It defaults to `ipv4 or ipv6`.
+- `"ipv6_suffix"` is the IPv6 interface identifier suffix to use. It can be for example `0:0:0:0:72ad:8fbb:a54e:bedd/64`. If left empty, it defaults to no suffix and the raw public IPv6 address obtained is used in the record updating.
 
 ## Domain setup

docs/easydns.md

@@ -0,0 +1,33 @@
+# EasyDNS
+
+## Configuration
+
+### Example
+
+```json
+{
+  "settings": [
+    {
+      "provider": "easydns",
+      "domain": "domain.com",
+      "username": "username",
+      "token": "token",
+      "ip_version": "ipv4",
+      "ipv6_suffix": ""
+    }
+  ]
+}
+```
+
+### Compulsory parameters
+
+- `"domain"` is the domain to update. It can be `example.com` (root domain), `sub.example.com` (subdomain of `example.com`) or `*.example.com` for the wildcard.
+- `"username"`
+- `"token"`
+
+### Optional parameters
+
+- `"ip_version"` can be `ipv4` (A records), or `ipv6` (AAAA records) or `ipv4 or ipv6` (update one of the two, depending on the public ip found). It defaults to `ipv4 or ipv6`.
+- `"ipv6_suffix"` is the IPv6 interface identifier suffix to use. It can be for example `0:0:0:0:72ad:8fbb:a54e:bedd/64`. If left empty, it defaults to no suffix and the raw public IPv6 address obtained is used in the record updating.
+
+## Domain setup

docs/example.md

@@ -0,0 +1,41 @@
+# Example.com
+
+## Configuration
+
+### Example
+
+<!-- UPDATE THIS JSON EXAMPLE -->
+
+```json
+{
+  "settings": [
+    {
+      "provider": "example",
+      "domain": "domain.com",
+      "username": "username",
+      "password": "password",
+      "ip_version": "ipv4",
+      "ipv6_suffix": ""
+    }
+  ]
+}
+```
+
+### Compulsory parameters
+
+- `"domain"` is the domain to update. It can be `example.com` (root domain), `sub.example.com` (subdomain of `example.com`) or `*.example.com` for the wildcard.
+- `"username"`
+- `"password"`
+
+<!-- UPDATE THIS IF NEEDED -->
+
+### Optional parameters
+
+- `"ip_version"` can be `ipv4` (A records), or `ipv6` (AAAA records) or `ipv4 or ipv6` (update one of the two, depending on the public ip found). It defaults to `ipv4 or ipv6`.
+- `"ipv6_suffix"` is the IPv6 interface identifier suffix to use. It can be for example `0:0:0:0:72ad:8fbb:a54e:bedd/64`. If left empty, it defaults to no suffix and the raw public IPv6 address obtained is used in the record updating.
+
+<!-- UPDATE THIS IF NEEDED -->
+
+## Domain setup
+
+<!-- FILL THIS UP WITH A FEW NUMBERED STEPS -->

docs/freedns.md

@@ -9,10 +9,10 @@
   "settings": [
     {
       "provider": "freedns",
-      "domain": "domain.com",
-      "host": "host",
+      "domain": "sub.domain.com",
       "token": "token",
-      "ip_version": "ipv4"
+      "ip_version": "ipv4",
+      "ipv6_suffix": ""
     }
   ]
 }
@@ -20,14 +20,15 @@
 
 ### Compulsory parameters
 
-- `"domain"`
-- `"host"` is your host (subdomain)
+- `"domain"` is the domain to update. It can be `example.com` (root domain) or `sub.example.com` (subdomain of `example.com`).
 - `"token"` is the randomized update token you use to update your record
 
 ### Optional parameters
 
-- `"ip_version"` can be `ipv4` (A records) or `ipv6` (AAAA records), defaults to `ipv4 or ipv6`
+- `"ip_version"` can be `ipv4` (A records), or `ipv6` (AAAA records) or `ipv4 or ipv6` (update one of the two, depending on the public ip found). It defaults to `ipv4 or ipv6`.
+- `"ipv6_suffix"` is the IPv6 interface identifier suffix to use. It can be for example `0:0:0:0:72ad:8fbb:a54e:bedd/64`. If left empty, it defaults to no suffix and the raw public IPv6 address obtained is used in the record updating.
 
 ## Domain setup
 
-This integration uses FreeDNS's v2 dynamic dns interface, which is not shown by default when you select `Dynamic DNS` from the side menu. Instead you must go to https://freedns.afraid.org/dynamic/v2/ and enable dynamic DNS for the subdomains you wish and you will then see a url like `https://sync.afraid.org/u/token/` for each enabled subdomain.
+This integration uses FreeDNS's v2 dynamic dns interface, which is not shown by default when you select `Dynamic DNS` from the side menu.
+Instead you must go to [freedns.afraid.org/dynamic/v2/](https://freedns.afraid.org/dynamic/v2/) and enable dynamic DNS for the subdomains you wish and you will then see a url like `https://sync.afraid.org/u/token/` for each enabled subdomain.

docs/gandi.md

@@ -12,10 +12,10 @@ This provider uses Gandi v5 API
     {
       "provider": "gandi",
       "domain": "domain.com",
-      "host": "@",
-      "key": "key",
+      "personal_access_token": "token",
       "ttl": 3600,
-      "ip_version": "ipv4"
+      "ip_version": "ipv4",
+      "ipv6_suffix": ""
     }
   ]
 }
@@ -23,15 +23,15 @@ This provider uses Gandi v5 API
 
 ### Compulsory parameters
 
-- `"domain"`
-- `"host"` which can be a subdomain, `@` or a wildcard `*`
-- `"key"`
+- `"domain"` is the domain to update. It can be `example.com` (root domain), `sub.example.com` (subdomain of `example.com`) or `*.example.com` for the wildcard.
+- `"personal_access_token"`
 
 ### Optional parameters
 
-- `"ip_version"` can be `ipv4` (A records) or `ipv6` (AAAA records), defaults to `ipv4 or ipv6`
+- `"ip_version"` can be `ipv4` (A records), or `ipv6` (AAAA records) or `ipv4 or ipv6` (update one of the two, depending on the public ip found). It defaults to `ipv4 or ipv6`.
+- `"ipv6_suffix"` is the IPv6 interface identifier suffix to use. It can be for example `0:0:0:0:72ad:8fbb:a54e:bedd/64`. If left empty, it defaults to no suffix and the raw public IPv6 address obtained is used in the record updating.
 - `"ttl"` default is `3600`
 
 ## Domain setup
 
-[Gandi Documentation Website](https://docs.gandi.net/en/domain_names/advanced_users/api.html#gandi-s-api)
+[Gandi Documentation Website](https://docs.gandi.net/en/rest_api/index.html)

docs/gcp.md

@@ -8,7 +8,7 @@
 {
   "settings": [
     {
-      "provider": "gpc",
+      "provider": "gcp",
       "project": "my-project-id",
       "zone": "zone",
       "credentials": {
@@ -17,8 +17,8 @@
         // ...
       },
       "domain": "domain.com",
-      "host": "@",
-      "ip_version": "ipv4"
+      "ip_version": "ipv4",
+      "ipv6_suffix": ""
     }
   ]
 }
@@ -29,9 +29,9 @@
 - `"project"` is the id of your Google Cloud project
 - `"zone"` is the zone, that your DNS record is located in
 - `"credentials"` is the JSON credentials for your Google Cloud project. This is usually downloaded as a JSON file, which you can copy paste the content as the value of the `"credentials"` key. More information on how to get it is available [here](https://cloud.google.com/docs/authentication/getting-started). Please ensure your service account has all necessary permissions to create/update/list/get DNS records within your project.
-- `"domain"` is the TLD of you DNS record (without a trailing dot)
-- `"host"` is your host and can be a subdomain or `"@"` or `"*"`
+- `"domain"` is the domain to update. It can be `example.com` (root domain), `sub.example.com` (subdomain of `example.com`) or `*.example.com` for the wildcard.
 
 ### Optional parameters
 
-- `"ip_version"` can be `ipv4` (A records) or `ipv6` (AAAA records), defaults to `ipv4`
+- `"ip_version"` can be `ipv4` (A records), or `ipv6` (AAAA records) or `ipv4 or ipv6` (update one of the two, depending on the public ip found). It defaults to `ipv4 or ipv6`.
+- `"ipv6_suffix"` is the IPv6 interface identifier suffix to use. It can be for example `0:0:0:0:72ad:8fbb:a54e:bedd/64`. If left empty, it defaults to no suffix and the raw public IPv6 address obtained is used in the record updating.

docs/godaddy.md

@@ -10,10 +10,10 @@
     {
       "provider": "godaddy",
       "domain": "domain.com",
-      "host": "@",
       "key": "key",
       "secret": "secret",
-      "ip_version": "ipv4"
+      "ip_version": "ipv4",
+      "ipv6_suffix": ""
     }
   ]
 }
@@ -21,18 +21,18 @@
 
 ### Compulsory parameters
 
-- `"domain"`
-- `"host"` is your host and can be a subdomain, `"@"` or `"*"` generally
+- `"domain"` is the domain to update. It can be `example.com` (root domain), `sub.example.com` (subdomain of `example.com`) or `*.example.com` for the wildcard.
 - `"key"`
 - `"secret"`
 
 ### Optional parameters
 
-- `"ip_version"` can be `ipv4` (A records) or `ipv6` (AAAA records), defaults to `ipv4 or ipv6`
+- `"ip_version"` can be `ipv4` (A records), or `ipv6` (AAAA records) or `ipv4 or ipv6` (update one of the two, depending on the public ip found). It defaults to `ipv4 or ipv6`.
+- `"ipv6_suffix"` is the IPv6 interface identifier suffix to use. It can be for example `0:0:0:0:72ad:8fbb:a54e:bedd/64`. If left empty, it defaults to no suffix and the raw public IPv6 address obtained is used in the record updating.
 
 ## Domain setup
 
-[![GoDaddy Website](../readme/godaddy.png)](https://godaddy.com)
+[![GoDaddy Website](../readme/godaddy.png)](https://www.godaddy.com/en-ie)
 
 1. Login to [https://developer.godaddy.com/keys](https://developer.godaddy.com/keys/) with your account credentials.
 

docs/goip.md

@@ -0,0 +1,36 @@
+# GoIP.de
+
+## Configuration
+
+### Example
+
+```json
+{
+  "settings": [
+    {
+      "provider": "goip",
+      "domain": "sub.mydomain.goip.de",
+      "username": "username",
+      "password": "password",
+      "ip_version": "",
+      "ipv6_suffix": ""
+
+    }
+  ]
+}
+```
+
+### Compulsory parameters
+
+- `"domain"` is the domain to update. For example, for the owner/host `sub`, it would be `sub.goip.de`. The [eTLD](https://developer.mozilla.org/en-US/docs/Glossary/eTLD) must be `goip.de` or `goip.it`.
+- `"domain"` is the domain to update. The [eTLD](https://developer.mozilla.org/en-US/docs/Glossary/eTLD) must be `goip.de` or `goip.it`. For example:
+  - for the root owner/host `@`, it would be `mydomain.goip.de`
+  - for the owner/host `sub`, it would be `sub.mydomain.goip.de`
+  - for multiple domains, it can be `sub1.mydomain.goip.de,sub2.mydomain.goip.de` BUT it cannot be `a.goip.de,b.goip.de`, since the effective domains would be `a.goip.de` and `b.goip.de`
+- `"username"` is your goip.de username listed under "Routers"
+- `"password"` is your router account password
+
+### Optional parameters
+
+- `"ip_version"` can be `ipv4` (A records), or `ipv6` (AAAA records) or `ipv4 or ipv6` (update one of the two, depending on the public ip found). It defaults to `ipv4`.
+- `"ipv6_suffix"` is the IPv6 interface identifier suffix to use. It can be for example `0:0:0:0:72ad:8fbb:a54e:bedd/64`. If left empty, it defaults to no suffix and the raw public IPv6 address obtained is used in the record updating.

docs/google.md

@@ -1,42 +0,0 @@
-# Google
-
-## Configuration
-
-### Example
-
-```json
-{
-  "settings": [
-    {
-      "provider": "google",
-      "domain": "domain.com",
-      "host": "@",
-      "username": "username",
-      "password": "password",
-      "ip_version": "ipv4"
-    }
-  ]
-}
-```
-
-### Compulsory parameters
-
-- `"domain"`
-- `"host"` is your host and can be a subdomain or `"@"` or `"*"`
-- `"username"`
-- `"password"`
-
-### Optional parameters
-
-- `"ip_version"` can be `ipv4` (A records) or `ipv6` (AAAA records), defaults to `ipv4 or ipv6`
-
-## Domain setup
-
-Thanks to [@gauravspatel](https://github.com/gauravspatel) for #124
-
-1. Enable dynamic DNS in the *synthetic records* section of DNS management.
-1. The username and password is generated once you create the dynamic DNS entry.
-
-### Wildcard entries
-
-If you want to create a **wildcard entry**, you have to create a custom **CNAME** record with key `"*"` and value `"@"`.

docs/he.net.md

@@ -10,9 +10,9 @@
     {
       "provider": "he",
       "domain": "domain.com",
-      "host": "@",
       "password": "password",
-      "ip_version": "ipv4"
+      "ip_version": "ipv4",
+      "ipv6_suffix": ""
     }
   ]
 }
@@ -20,12 +20,12 @@
 
 ### Compulsory parameters
 
-- `"domain"`
-- `"host"` is your host and can be a subdomain or `"@"` or `"*"` (untested)
+- `"domain"` is the domain to update. It can be `example.com` (root domain), `sub.example.com` (subdomain of `example.com`) or `*.example.com` for the wildcard. (untested)
 - `"password"`
 
 ### Optional parameters
 
-- `"ip_version"` can be `ipv4` (A records) or `ipv6` (AAAA records), defaults to `ipv4 or ipv6`
+- `"ip_version"` can be `ipv4` (A records), or `ipv6` (AAAA records) or `ipv4 or ipv6` (update one of the two, depending on the public ip found). It defaults to `ipv4 or ipv6`.
+- `"ipv6_suffix"` is the IPv6 interface identifier suffix to use. It can be for example `0:0:0:0:72ad:8fbb:a54e:bedd/64`. If left empty, it defaults to no suffix and the raw public IPv6 address obtained is used in the record updating.
 
 ## Domain setup

docs/hetzner.md

@@ -0,0 +1,34 @@
+# Hetzner
+
+## Configuration
+
+### Example
+
+```json
+{
+  "settings": [
+    {
+      "provider": "hetzner",
+      "zone_identifier": "some id",
+      "domain": "domain.com",
+      "ttl": 600,
+      "token": "yourtoken",
+      "ip_version": "ipv4",
+      "ipv6_suffix": ""
+    }
+  ]
+}
+```
+
+### Compulsory parameters
+
+- `"zone_identifier"` is the Zone ID of your site, from the domain overview page written as *Zone ID*
+- `"domain"` is the domain to update. It can be `example.com` (root domain), `sub.example.com` (subdomain of `example.com`) or `*.example.com` for the wildcard.
+- `"ttl"` optional integer value corresponding to a number of seconds
+- One of the following ([how to find API keys](https://docs.hetzner.com/cloud/api/getting-started/generating-api-token)):
+  - API Token `"token"`, configured with DNS edit permissions for your DNS name's zone
+
+### Optional parameters
+
+- `"ip_version"` can be `ipv4` (A records), or `ipv6` (AAAA records) or `ipv4 or ipv6` (update one of the two, depending on the public ip found). It defaults to `ipv4 or ipv6`.
+- `"ipv6_suffix"` is the IPv6 interface identifier suffix to use. It can be for example `0:0:0:0:72ad:8fbb:a54e:bedd/64`. If left empty, it defaults to no suffix and the raw public IPv6 address obtained is used in the record updating.

docs/infomaniak.md

@@ -10,10 +10,10 @@
     {
       "provider": "infomaniak",
       "domain": "domain.com",
-      "host": "@",
+      "username": "username",
       "password": "password",
       "ip_version": "ipv4",
-      "provider_ip": true
+      "ipv6_suffix": ""
     }
   ]
 }
@@ -21,14 +21,17 @@
 
 ### Compulsory parameters
 
-- `"domain"`
-- `"host"` is your host and can be a subdomain or `"@"`
-- `"username"`
-- `"password"`
+- `"domain"` is the domain to update. It can be `example.com` (root domain) or `sub.example.com` (subdomain of `example.com`).
+- `"username"` for dyndns (**not** your infomaniak admin username!)
+- `"password"` for dyndns (**not** your infomaniak admin password!)
 
 ### Optional parameters
 
-- `"ip_version"` can be `ipv4` (A records) or `ipv6` (AAAA records), defaults to `ipv4 or ipv6`
-- `"provider_ip"` can be set to `true` to let your DNS provider determine your IPv4 address (and/or IPv6 address) automatically when you send an update request, without sending the new IP address detected by the program in the request.
+- `"ip_version"` can be `ipv4` (A records), or `ipv6` (AAAA records) or `ipv4 or ipv6` (update one of the two, depending on the public ip found). It defaults to `ipv4 or ipv6`.
+- `"ipv6_suffix"` is the IPv6 interface identifier suffix to use. It can be for example `0:0:0:0:72ad:8fbb:a54e:bedd/64`. If left empty, it defaults to no suffix and the raw public IPv6 address obtained is used in the record updating.
 
 ## Domain setup
+
+Follow [this guide](https://www.infomaniak.com/en/support/faq/2357/getting-started-guide-dyndns-with-an-infomaniak-domain) to set up your subdomain including `username` and `password` for use in the configuration. **do not use your infomaniak admin username and password in the configuration!**
+
+If you only plan on using IPv4, add your current IPv4 Address. If you only plan on using IPv6, add your current IPv6 Address. If you plan to use dual-stack (IPv4 and IPv6) addresses, it does not matter what ip-address you put in the dialog.

docs/inwx.md

@@ -1,32 +1,35 @@
-# OpenDNS
+# INWX
 
 ## Configuration
 
+You must configure a [DynDNS Account in INWX](https://www.inwx.com/en/offer/dyndns) and use the configured account and hostname.
+
 ### Example
 
 ```json
 {
   "settings": [
     {
-      "provider": "dyn",
+      "provider": "inwx",
       "domain": "domain.com",
-      "host": "@",
       "username": "username",
       "password": "password",
       "ip_version": "ipv4",
+      "ipv6_suffix": ""
     }
   ]
 }
 ```
 
 ### Compulsory parameters
-- `"domain"`
-- `"host"` is your host and can be a subdomain or `"@"`
+
+- `"domain"` is the domain configured for the DynDNS Account. It can be `example.com` (root domain) or `sub.example.com` (subdomain of `example.com`).
 - `"username"`
 - `"password"`
 
 ### Optional parameters
 
-- `"ip_version"` can be `ipv4` (A records) or `ipv6` (AAAA records), defaults to `ipv4 or ipv6`
+- `"ip_version"` can be `ipv4` (A records), or `ipv6` (AAAA records) or `ipv4 or ipv6` (update one of the two, depending on the public ip found). It defaults to `ipv4 or ipv6`.
+- `"ipv6_suffix"` is the IPv6 interface identifier suffix to use. It can be for example `0:0:0:0:72ad:8fbb:a54e:bedd/64`. If left empty, it defaults to no suffix and the raw public IPv6 address obtained is used in the record updating.
 
 ## Domain setup

docs/ionos.md

@@ -0,0 +1,29 @@
+# Ionos
+
+## Configuration
+
+### Example
+
+```json
+{
+  "settings": [
+    {
+      "provider": "ionos",
+      "domain": "domain.com",
+      "api_key": "api_key",
+      "ip_version": "ipv4",
+      "ipv6_suffix": ""
+    }
+  ]
+}
+```
+
+### Compulsory parameters
+
+- `"domain"` is the domain to update. It can be `example.com` (root domain), `sub.example.com` (subdomain of `example.com`) or `*.example.com` for the wildcard.
+- `"api_key"` is your API key, consisting of two parts — a prefix and the key itself — and can be obtained by [creating an API key](https://www.ionos.com/help/domains/configuring-your-ip-address/set-up-dynamic-dns-with-company-name/#c181598). It must follow the format `<prefix>.<key>`.
+
+### Optional parameters
+
+- `"ip_version"` can be `ipv4` (A records), or `ipv6` (AAAA records) or `ipv4 or ipv6` (update one of the two, depending on the public ip found). It defaults to `ipv4 or ipv6`.
+- `"ipv6_suffix"` is the IPv6 interface identifier suffix to use. It can be for example `0:0:0:0:72ad:8fbb:a54e:bedd/64`. If left empty, it defaults to no suffix and the raw public IPv6 address obtained is used in the record updating.

docs/linode.md

@@ -10,9 +10,9 @@
     {
       "provider": "linode",
       "domain": "domain.com",
-      "host": "@",
       "token": "token",
-      "ip_version": "ipv4"
+      "ip_version": "ipv4",
+      "ipv6_suffix": ""
     }
   ]
 }
@@ -20,15 +20,15 @@
 
 ### Compulsory parameters
 
-- `"domain"`
-- `"host"` is your host and can be a subdomain or `"@"` or `"*"`
+- `"domain"` is the domain to update. It can be `example.com` (root domain), `sub.example.com` (subdomain of `example.com`) or `*.example.com` for the wildcard.
 - `"token"`
 
 ### Optional parameters
 
-- `"ip_version"` can be `ipv4` (A records) or `ipv6` (AAAA records), defaults to `ipv4 or ipv6`
+- `"ip_version"` can be `ipv4` (A records), or `ipv6` (AAAA records) or `ipv4 or ipv6` (update one of the two, depending on the public ip found). It defaults to `ipv4 or ipv6`.
+- `"ipv6_suffix"` is the IPv6 interface identifier suffix to use. It can be for example `0:0:0:0:72ad:8fbb:a54e:bedd/64`. If left empty, it defaults to no suffix and the raw public IPv6 address obtained is used in the record updating.
 
 ## Domain setup
 
-1. Create a personal access token with `domains` set, with read and write privileges, ideally that never expires. You can refer to [@AnujRNair's comment](https://github.com/qdm12/ddns-updater/pull/144#discussion_r559292678) and to [Linode's guide](https://www.linode.com/docs/products/tools/cloud-manager/guides/cloud-api-keys).
+1. Create a personal access token with `domains` set, with read and write privileges, ideally that never expires. You can refer to [@AnujRNair's comment](https://github.com/qdm12/ddns-updater/pull/144#discussion_r559292678) and to [Linode's guide](https://www.linode.com/docs/products/tools/api/guides/manage-api-tokens/).
 1. The program will create the A or AAAA record for you if it doesn't exist already.

docs/loopia.md

@@ -0,0 +1,31 @@
+# Loopia
+
+## Configuration
+
+### Example
+
+```json
+{
+  "settings": [
+    {
+      "provider": "loopia",
+      "domain": "domain.com",
+      "username": "username",
+      "password": "password",
+      "ip_version": "ipv4",
+      "ipv6_suffix": ""
+    }
+  ]
+}
+```
+
+### Compulsory parameters
+
+- `"domain"` is the domain to update. It can be `example.com` (root domain), `sub.example.com` (subdomain of `example.com`). It cannot be a wildcard domain.
+- `"username"`
+- `"password"`
+
+### Optional parameters
+
+- `"ip_version"` can be `ipv4` (A records), or `ipv6` (AAAA records) or `ipv4 or ipv6` (update one of the two, depending on the public ip found). It defaults to `ipv4 or ipv6`.
+- `"ipv6_suffix"` is the IPv6 interface identifier suffix to use. It can be for example `0:0:0:0:72ad:8fbb:a54e:bedd/64`. If left empty, it defaults to no suffix and the raw public IPv6 address obtained is used in the record updating.

docs/luadns.md

@@ -10,10 +10,10 @@
     {
       "provider": "luadns",
       "domain": "domain.com",
-      "host": "@",
       "email": "email",
       "token": "token",
-      "ip_version": "ipv4"
+      "ip_version": "ipv4",
+      "ipv6_suffix": ""
     }
   ]
 }
@@ -21,14 +21,14 @@
 
 ### Compulsory parameters
 
-- `"domain"`
-- `"host"` is your host and can be a subdomain or `"@"` or `"*"`
+- `"domain"` is the domain to update. It can be `example.com` (root domain), `sub.example.com` (subdomain of `example.com`) or `*.example.com` for the wildcard.
 - `"email"`
 - `"token"`
 
 ### Optional parameters
 
-- `"ip_version"` can be `ipv4` (A records) or `ipv6` (AAAA records), defaults to `ipv4 or ipv6`
+- `"ip_version"` can be `ipv4` (A records), or `ipv6` (AAAA records) or `ipv4 or ipv6` (update one of the two, depending on the public ip found). It defaults to `ipv4 or ipv6`.
+- `"ipv6_suffix"` is the IPv6 interface identifier suffix to use. It can be for example `0:0:0:0:72ad:8fbb:a54e:bedd/64`. If left empty, it defaults to no suffix and the raw public IPv6 address obtained is used in the record updating.
 
 ## Domain setup
 

docs/myaddr.md

@@ -0,0 +1,33 @@
+# [Myaddr](https://myaddr.tools/)
+
+## Configuration
+
+### Example
+
+```json
+{
+  "settings": [
+    {
+      "provider": "myaddr",
+      "domain": "your-name.myaddr.tools",
+      "key": "key",
+      "ip_version": "ipv4",
+      "ipv6_suffix": ""
+    }
+  ]
+}
+```
+
+### Compulsory parameters
+
+- `"domain"` - the **single** domain to update; note the `key` below updates all records and subdomains for this domain. It should be `your-name.myaddr.tools`.
+- `"key"` - the private key corresponding to the domain to update
+
+### Optional parameters
+
+- `"ip_version"` can be `ipv4` (A records), or `ipv6` (AAAA records) or `ipv4 or ipv6` (update one of the two, depending on the public ip found). It defaults to `ipv4 or ipv6`.
+- `"ipv6_suffix"` is the IPv6 interface identifier suffix to use. It can be for example `0:0:0:0:72ad:8fbb:a54e:bedd/64`. If left empty, it defaults to no suffix and the raw public IPv6 address obtained is used in the record updating.
+
+## Domain setup
+
+Claim a subdomain at [myaddr.tools](https://myaddr.tools/)

docs/name.com.md

@@ -0,0 +1,35 @@
+# Name.com
+
+<img src="../readme/name.svg" alt="drawing" width="25%"/>
+
+## Configuration
+
+### Example
+
+```json
+{
+  "settings": [
+    {
+      "provider": "name.com",
+      "domain": "domain.com",
+      "username": "username",
+      "token": "token",
+      "ttl": 300,
+      "ip_version": "ipv4",
+      "ipv6_suffix": ""
+    }
+  ]
+}
+```
+
+### Compulsory parameters
+
+- `"domain"` is the domain to update. It can be `example.com` (root domain), `sub.example.com` (subdomain of `example.com`) or `*.example.com` for the wildcard.
+- `"username"` is your account username
+- `"token"` which you can obtain from [www.name.com/account/settings/api](https://www.name.com/account/settings/api)
+
+### Optional parameters
+
+- `"ttl"` is the time this record can be cached for in seconds. Name.com allows a minimum TTL of 300, or 5 minutes. Name.com defaults to 300 if not provided.
+- `"ip_version"` can be `ipv4` (A records), or `ipv6` (AAAA records) or `ipv4 or ipv6` (update one of the two, depending on the public ip found). It defaults to `ipv4 or ipv6`.
+- `"ipv6_suffix"` is the IPv6 interface identifier suffix to use. It can be for example `0:0:0:0:72ad:8fbb:a54e:bedd/64`. If left empty, it defaults to no suffix and the raw public IPv6 address obtained is used in the record updating.

docs/namecheap.md

@@ -10,9 +10,7 @@
     {
       "provider": "namecheap",
       "domain": "domain.com",
-      "host": "@",
-      "password": "password",
-      "provider_ip": true
+      "password": "password"
     }
   ]
 }
@@ -20,38 +18,35 @@
 
 ### Compulsory parameters
 
-- `"domain"`
-- `"host"` is your host and can be a subdomain, `"@"` or `"*"` generally
+- `"domain"` is the domain to update. It can be `example.com` (root domain), `sub.example.com` (subdomain of `example.com`) or `*.example.com` for the wildcard.
 - `"password"`
 
 ### Optional parameters
 
-- `"provider_ip"` can be set to `true` to let your DNS provider determine your IPv4 address (and/or IPv6 address) automatically when you send an update request, without sending the new IP address detected by the program in the request.
-
 Note that Namecheap only supports ipv4 addresses for now.
 
 ## Domain setup
 
-[![Namecheap Website](../readme/namecheap.png)](https://www.namecheap.com)
+[![Namecheap Website](../readme/namecheap.png)](https://www.namecheap.com/)
 
 1. Create a Namecheap account and buy a domain name - *example.com* as an example
-1. Login to Namecheap at [https://www.namecheap.com/myaccount/login.aspx](https://www.namecheap.com/myaccount/login.aspx)
+1. Login to Namecheap at [https://www.namecheap.com/myaccount/login/](https://www.namecheap.com/myaccount/login/)
 
 For **each domain name** you want to add, replace *example.com* in the following link with your domain name and go to [https://ap.www.namecheap.com/Domains/DomainControlPanel/**example.com**/advancedns](https://ap.www.namecheap.com/Domains/DomainControlPanel/example.com/advancedns)
 
 1. For each host you want to add (if you don't know, create one record with the host set to `*`):
     1. In the *HOST RECORDS* section, click on *ADD NEW RECORD*
 
-        ![https://ap.www.namecheap.com/Domains/DomainControlPanel/mealracle.com/advancedns](../readme/namecheap1.png)
+        ![https://ap.www.namecheap.com/Domains/DomainControlPanel/example.com/advancedns](../readme/namecheap1.png)
 
     1. Select the following settings and create the *A + Dynamic DNS Record*:
 
-        ![https://ap.www.namecheap.com/Domains/DomainControlPanel/mealracle.com/advancedns](../readme/namecheap2.png)
+        ![https://ap.www.namecheap.com/Domains/DomainControlPanel/example.com/advancedns](../readme/namecheap2.png)
 
 1. Scroll down and turn on the switch for *DYNAMIC DNS*
 
-    ![https://ap.www.namecheap.com/Domains/DomainControlPanel/mealracle.com/advancedns](../readme/namecheap3.png)
+    ![https://ap.www.namecheap.com/Domains/DomainControlPanel/example.com/advancedns](../readme/namecheap3.png)
 
 1. The Dynamic DNS Password will appear, which is `0e4512a9c45a4fe88313bcc2234bf547` in this example.
 
-    ![https://ap.www.namecheap.com/Domains/DomainControlPanel/mealracle.com/advancedns](../readme/namecheap4.png)
+    ![https://ap.www.namecheap.com/Domains/DomainControlPanel/example.com/advancedns](../readme/namecheap4.png)

docs/namesilo.md

@@ -0,0 +1,51 @@
+# NameSilo
+
+[![NameSilo Website](../readme/namesilo.jpg)](https://www.namesilo.com)
+
+## Configuration
+
+### Example
+
+```json
+{
+  "settings": [
+    {
+      "provider": "namesilo",
+      "domain": "sub.example.com",
+      "key": "71dZaE8c2Aa926Ca2E8c1",
+      "ttl": 7207,
+      "ip_version": "ipv4"
+    }
+  ]
+}
+```
+
+### Compulsory parameters
+
+- `"domain"` is the domain to update. It can be `example.com` (root domain), `sub.example.com` (subdomain of `example.com`) or `*.example.com` for the wildcard.
+- `"key"` is the NameSilo API Key obtained using the domain setup instructions below. For example: `71dZaE8c2Aa926Ca2E8c1`.
+
+### Optional parameters
+
+- `"ip_version"` can be `ipv4` (A records), or `ipv6` (AAAA records) or `ipv4 or ipv6` (update one of the two, depending on the public ip found). It defaults to `ipv4 or ipv6`.
+- `"ipv6_suffix"` is the IPv6 interface identifier suffix to use. It can be for example `0:0:0:0:72ad:8fbb:a54e:bedd/64`. If left empty, it defaults to no suffix and the raw public IPv6 address obtained is used in the record updating.
+- `"ttl"` is the record's Time to Live (TTL), which defaults to `7207` seconds. It must be numeric, less than `2592001`, and greater than or equal to `3600`. TTL values of `3603` or `7207` may be subject to NameSilo's [Automatic TTL Adjustments](https://www.namesilo.com/support/v2/articles/domain-manager/dns-manager#auto_ttl).
+
+## Domain setup
+
+1. Login to the [Namesilo API Manager](https://www.namesilo.com/account/api-manager) with your account credentials.
+1. Generate an API key. The generated API key will look similar to `71dZaE8c2Aa926Ca2E8c1`.
+    - (do _not_ check the "Generate key for read-only access" box)
+
+    [![Before NameSilo API Key](../readme/namesilo1.jpg)](https://www.namesilo.com/account/api-manager)
+    [![After NameSilo API Key](../readme/namesilo2.jpg)](https://www.namesilo.com/account/api-manager)
+
+## Testing
+
+1. Go to the [NameSilo Domain Manager](https://www.namesilo.com/account_domains.php).
+1. Choose "Manage DNS for this domain" (the globe icon) for the domain you wish to test.
+    [![Manage DNS for this domain](../readme/namesilo3.jpg)](https://www.namesilo.com/account_domains.php)
+
+1. Change the IP address of the host to `127.0.0.1`.
+1. Run the ddns-updater.
+1. Refresh the Namesilo webpage to check the update occurred.

docs/netcup.md

@@ -0,0 +1,37 @@
+# Netcup
+
+## Configuration
+
+Note: This implementation does not require a domain reseller account. The warning in the dashboard can be ignored.
+
+Also keep in mind, that TTL, Expire, Retry and Refresh values of the given Domain are not updated. They can be manually set in the dashboard. For DDNS purposes low numbers should be used.
+
+### Example
+
+```json
+{
+  "settings": [
+    {
+      "provider": "netcup",
+      "domain": "domain.com",
+      "api_key": "xxxxx",
+      "password": "yyyyy",
+      "customer_number": "111111",
+      "ip_version": "ipv4",
+      "ipv6_suffix": ""
+    }
+  ]
+}
+```
+
+### Compulsory parameters
+
+- `"domain"` is the domain to update. It can be `example.com` (root domain) or `sub.example.com` (subdomain of `example.com`) or the wildcard `*.example.com`.
+- `"api_key"` is your api key (generated in the [customercontrolpanel](https://www.customercontrolpanel.de))
+- `"password"` is your api password (generated in the [customercontrolpanel](https://www.customercontrolpanel.de)). Netcup only allows one ApiPassword. This is not the account password. This password is used for all api keys.
+- `"customer_number"` is your customer number (viewable in the [customercontrolpanel](https://www.customercontrolpanel.de) next to your name). As seen in the example above, provide the number as string value.
+
+### Optional parameters
+
+- `"ip_version"` can be `ipv4` (A records), or `ipv6` (AAAA records) or `ipv4 or ipv6` (update one of the two, depending on the public ip found). It defaults to `ipv4 or ipv6`.
+- `"ipv6_suffix"` is the IPv6 interface identifier suffix to use. It can be for example `0:0:0:0:72ad:8fbb:a54e:bedd/64`. If left empty, it defaults to no suffix and the raw public IPv6 address obtained is used in the record updating.

docs/njalla.md

@@ -10,10 +10,9 @@
     {
       "provider": "njalla",
       "domain": "domain.com",
-      "host": "@",
       "key": "key",
       "ip_version": "ipv4",
-      "provider_ip": true
+      "ipv6_suffix": ""
     }
   ]
 }
@@ -21,14 +20,13 @@
 
 ### Compulsory parameters
 
-- `"domain"`
-- `"host"` is your host and can be a subdomain or `"@"` or `"*"`
+- `"domain"` is the domain to update. It can be `example.com` (root domain), `sub.example.com` (subdomain of `example.com`) or `*.example.com` for the wildcard.
 - `"key"` is the key for your record
 
 ### Optional parameters
 
-- `"ip_version"` can be `ipv4` (A records) or `ipv6` (AAAA records), defaults to `ipv4 or ipv6`
-- `"provider_ip"` can be set to `true` to let your DNS provider determine your IPv4 address (and/or IPv6 address) automatically when you send an update request, without sending the new IP address detected by the program in the request.
+- `"ip_version"` can be `ipv4` (A records), or `ipv6` (AAAA records) or `ipv4 or ipv6` (update one of the two, depending on the public ip found). It defaults to `ipv4 or ipv6`.
+- `"ipv6_suffix"` is the IPv6 interface identifier suffix to use. It can be for example `0:0:0:0:72ad:8fbb:a54e:bedd/64`. If left empty, it defaults to no suffix and the raw public IPv6 address obtained is used in the record updating.
 
 ## Domain setup
 

docs/noip.md

@@ -10,10 +10,10 @@
     {
       "provider": "noip",
       "domain": "domain.com",
-      "host": "@",
+      "username": "username",
       "password": "password",
       "ip_version": "ipv4",
-      "provider_ip": true
+      "ipv6_suffix": ""
     }
   ]
 }
@@ -21,14 +21,13 @@
 
 ### Compulsory parameters
 
-- `"domain"`
-- `"host"` is your host and can be a subdomain or `"@"`
+- `"domain"` is the domain to update. It can be `example.com` (root domain) or `sub.example.com` (subdomain of `example.com`).
 - `"username"`
 - `"password"`
 
 ### Optional parameters
 
-- `"ip_version"` can be `ipv4` (A records) or `ipv6` (AAAA records), defaults to `ipv4 or ipv6`
-- `"provider_ip"` can be set to `true` to let your DNS provider determine your IPv4 address (and/or IPv6 address) automatically when you send an update request, without sending the new IP address detected by the program in the request.
+- `"ip_version"` can be `ipv4` (A records), or `ipv6` (AAAA records) or `ipv4 or ipv6` (update one of the two, depending on the public ip found). It defaults to `ipv4 or ipv6`.
+- `"ipv6_suffix"` is the IPv6 interface identifier suffix to use. It can be for example `0:0:0:0:72ad:8fbb:a54e:bedd/64`. If left empty, it defaults to no suffix and the raw public IPv6 address obtained is used in the record updating.
 
 ## Domain setup

docs/nowdns.md

@@ -0,0 +1,31 @@
+# Now-DNS
+
+## Configuration
+
+### Example
+
+```json
+{
+  "settings": [
+    {
+      "provider": "nowdns",
+      "domain": "domain.com",
+      "username": "username",
+      "password": "password",
+      "ip_version": "ipv4",
+      "ipv6_suffix": ""
+    }
+  ]
+}
+```
+
+### Compulsory parameters
+
+- `"domain"` your full domain name (FQDN)
+- `"username"` your email address
+- `"password"`
+
+### Optional parameters
+
+- `"ip_version"` can be `ipv4` (A records), or `ipv6` (AAAA records) or `ipv4 or ipv6` (update one of the two, depending on the public ip found). It defaults to `ipv4 or ipv6`.
+- `"ipv6_suffix"` is the IPv6 interface identifier suffix to use. It can be for example `0:0:0:0:72ad:8fbb:a54e:bedd/64`. If left empty, it defaults to no suffix and the raw public IPv6 address obtained is used in the record updating.

docs/opendns.md

@@ -8,13 +8,12 @@
 {
   "settings": [
     {
-      "provider": "dyn",
+      "provider": "opendns",
       "domain": "domain.com",
-      "host": "@",
       "username": "username",
       "password": "password",
       "ip_version": "ipv4",
-      "provider_ip": true
+      "ipv6_suffix": ""
     }
   ]
 }
@@ -22,14 +21,13 @@
 
 ### Compulsory parameters
 
-- `"domain"`
-- `"host"` is your host and can be a subdomain or `"@"`
+- `"domain"` is the domain to update. It can be `example.com` (root domain) or `sub.example.com` (subdomain of `example.com`).
 - `"username"`
 - `"password"`
 
 ### Optional parameters
 
-- `"ip_version"` can be `ipv4` (A records) or `ipv6` (AAAA records), defaults to `ipv4 or ipv6`
-- `"provider_ip"` can be set to `true` to let your DNS provider determine your IPv4 address (and/or IPv6 address) automatically when you send an update request, without sending the new IP address detected by the program in the request.
+- `"ip_version"` can be `ipv4` (A records), or `ipv6` (AAAA records) or `ipv4 or ipv6` (update one of the two, depending on the public ip found). It defaults to `ipv4 or ipv6`.
+- `"ipv6_suffix"` is the IPv6 interface identifier suffix to use. It can be for example `0:0:0:0:72ad:8fbb:a54e:bedd/64`. If left empty, it defaults to no suffix and the raw public IPv6 address obtained is used in the record updating.
 
 ## Domain setup

docs/ovh.md

@@ -10,11 +10,10 @@
     {
       "provider": "ovh",
       "domain": "domain.com",
-      "host": "@",
       "username": "username",
       "password": "password",
       "ip_version": "ipv4",
-      "provider_ip": true
+      "ipv6_suffix": ""
     }
   ]
 }
@@ -22,8 +21,7 @@
 
 ### Compulsory parameters
 
-- `"domain"`
-- `"host"` is your host and can be a subdomain or `"@"`
+- `"domain"` is the domain to update. It can be `example.com` (root domain) or `sub.example.com` (subdomain of `example.com`).
 
 #### Using DynHost
 
@@ -35,14 +33,14 @@
 - `"api_endpoint"` default value is `"ovh-eu"`
 - `"app_key"` which you can create at [eu.api.ovh.com/createApp](https://eu.api.ovh.com/createApp/)
 - `"app_secret"`
-- `"consumer_key"`
+- `"consumer_key"` which you can get at [www.ovh.com/auth/api/createToken](https://www.ovh.com/auth/api/createToken)
 
 The ZoneDNS implementation allows you to update any record name including *.yourdomain.tld
 
 ### Optional parameters
 
-- `"ip_version"` can be `ipv4` (A records) or `ipv6` (AAAA records), defaults to `ipv4 or ipv6`
-- `"provider_ip"` can be set to `true` to let your DNS provider determine your IPv4 address (and/or IPv6 address) automatically when you send an update request, without sending the new IP address detected by the program in the request.
+- `"ip_version"` can be `ipv4` (A records), or `ipv6` (AAAA records) or `ipv4 or ipv6` (update one of the two, depending on the public ip found). It defaults to `ipv4 or ipv6`.
+- `"ipv6_suffix"` is the IPv6 interface identifier suffix to use. It can be for example `0:0:0:0:72ad:8fbb:a54e:bedd/64`. If left empty, it defaults to no suffix and the raw public IPv6 address obtained is used in the record updating.
 - `"mode"` select between two modes, OVH's dynamic hosting service (`"dynamic"`) or OVH's API (`"api"`). Default is `"dynamic"`
 
 ## Domain setup

docs/porkbun.md

@@ -10,26 +10,43 @@
     {
       "provider": "porkbun",
       "domain": "domain.com",
-      "host": "@",
-      "api_key": "sk1_7d119e3f656b00ae042980302e1425a04163c476efec1833q3cb0w54fc6f5022",
-      "secret_api_key": "pk1_5299b57125c8f3cdf347d2fe0e713311ee3a1e11f11a14942b26472593e35368",
-      "ip_version": "ipv4"
+      "api_key": "pk1_5299b57125c8f3cdf347d2fe0e713311ee3a1e11f11a14942b26472593e35368",
+      "secret_api_key": "sk1_7d119e3f656b00ae042980302e1425a04163c476efec1833q3cb0w54fc6f5022",
+      "ip_version": "ipv4",
+      "ipv6_suffix": ""
     }
   ]
 }
 ```
 
-### Parameters
+### Compulsory Parameters
 
-- `"domain"`
-- `"host"` is your host and can be a subdomain, `"*"` or `"@"`
-- `"apikey"`
-- `"secretapikey"`
+- `"domain"` is the domain to update. It can be `example.com` (root domain), `sub.example.com` (subdomain of `example.com`) or `*.example.com` for the wildcard.
+- `"api_key"`
+- `"secret_api_key"`
 - `"ttl"` optional integer value corresponding to a number of seconds
 
+### Optional parameters
+
+- `"ip_version"` can be `ipv4` (A records), or `ipv6` (AAAA records) or `ipv4 or ipv6` (update one of the two, depending on the public ip found). It defaults to `ipv4 or ipv6`.
+- `"ipv6_suffix"` is the IPv6 interface identifier suffix to use. It can be for example `0:0:0:0:72ad:8fbb:a54e:bedd/64`. If left empty, it defaults to no suffix and the raw public IPv6 address obtained is used in the record updating.
+
 ## Domain setup
 
 - Create an API key at [porkbun.com/account/api](https://porkbun.com/account/api)
 - From the [Domain Management page](https://porkbun.com/account/domainsSpeedy), toggle on **API ACCESS** for your domain.
 
 💁 [Official setup documentation](https://kb.porkbun.com/article/190-getting-started-with-the-porkbun-dns-api)
+
+## Record creation
+
+In case you don't have an A or AAAA record for your host and domain combination, it will be created by DDNS-Updater.
+
+Porkbun creates default DNS entries for new domains, which can conflict with creating a root or wildcard A/AAAA record. Therefore, ddns-updater automatically removes any conflicting default record before creating records, as described in the table below:
+
+| Record type | Owner | Record value | Situation requiring a removal |
+| --- | --- | --- | --- |
+| `ALIAS` | `@` | pixie.porkbun.com | Creating A or AAAA record for the root domain **or** wildcard domain |
+| `CNAME` | `*` | pixie.porkbun.com | Creating A or AAAA record for the wildcard domain |
+
+More details is in [this comment by @everydaycombat](https://github.com/qdm12/ddns-updater/issues/546#issuecomment-1773960193).

docs/route53.md

@@ -0,0 +1,56 @@
+# AWS
+
+## Configuration
+
+### Example
+
+```json
+{
+  "settings": [
+    {
+      "provider": "route53",
+      "domain": "domain.com",
+      "ip_version": "ipv4",
+      "ipv6_suffix": "",
+      "access_key": "ffffffffffffffffffff",
+      "secret_key": "ffffffffffffffffffffffffffffffffffffffff",
+      "zone_id": "A30888735ZF12K83Z6F00",
+      "ttl": 300
+    }
+  ]
+}
+```
+
+### Compulsory parameters
+
+- `"domain"` is the domain to update. It can be `example.com` (root domain), `sub.example.com` (subdomain of `example.com`) or `*.example.com` for the wildcard.
+- `"access_key"` is the `AWS_ACCESS_KEY`
+- `"secret_key"` is the `AWS_SECRET_ACCESS_KEY`
+- `"zone_id"` is identification of your hosted zone
+
+### Optional parameters
+
+- `"ip_version"` can be `ipv4` (A records), or `ipv6` (AAAA records) or `ipv4 or ipv6` (update one of the two, depending on the public ip found). It defaults to `ipv4 or ipv6`.
+- `"ipv6_suffix"` is the IPv6 interface identifiersuffix to use. It can be for example `0:0:0:0:72ad:8fbb:a54e:bedd/64`. If left empty, it defaults to no suffix and the raw public IPv6 address obtained is used in the record updating.
+- `"ttl"` amount of time, in seconds, that you want DNS recursive resolvers to cache information about this record. Defaults to `300`.
+
+## Domain setup
+
+Amazon has [an extensive documentation on registering or tranfering your domain to route53](https://docs.aws.amazon.com/Route53/latest/DeveloperGuide/Welcome.html).
+
+### User permissions
+
+Create a policy to grant access to change record sets, you can use a wildcard `*` in case you want to grant access to all your hosted zones.
+
+```json
+{
+  "Version": "2012-10-17",
+  "Statement": [
+    {
+      "Effect": "Allow",
+      "Action": "route53:ChangeResourceRecordSets",
+      "Resource": "arn:aws:route53:::hostedzone/A30888735ZF12K83Z6F00"
+    }
+  ]
+}
+```

docs/selfhost.de.md

@@ -10,10 +10,10 @@
     {
       "provider": "selfhost.de",
       "domain": "domain.com",
-      "host": "@",
       "username": "username",
       "password": "password",
-      "ip_version": "ipv4"
+      "ip_version": "ipv4",
+      "ipv6_suffix": ""
     }
   ]
 }
@@ -21,13 +21,13 @@
 
 ### Compulsory parameters
 
-- `"domain"`
-- `"host"` is your host and can be a subdomain or `"@"`
+- `"domain"` is the domain to update. It can be `example.com` (root domain) or `sub.example.com` (subdomain of `example.com`).
 - `"username"` is your DynDNS username
 - `"password"` is your DynDNS password
 
 ### Optional parameters
 
-- `"ip_version"` can be `ipv4` (A records) or `ipv6` (AAAA records), defaults to `ipv4 or ipv6`
+- `"ip_version"` can be `ipv4` (A records), or `ipv6` (AAAA records) or `ipv4 or ipv6` (update one of the two, depending on the public ip found). It defaults to `ipv4 or ipv6`.
+- `"ipv6_suffix"` is the IPv6 interface identifier suffix to use. It can be for example `0:0:0:0:72ad:8fbb:a54e:bedd/64`. If left empty, it defaults to no suffix and the raw public IPv6 address obtained is used in the record updating.
 
 ## Domain setup

docs/servercow.md

@@ -10,28 +10,28 @@
       {
           "provider": "servercow",
           "domain": "domain.com",
-          "host": "",
           "username": "servercow_username",
           "password": "servercow_password",
           "ttl": 600,
-          "ip_version": "ipv4"
+          "ip_version": "ipv4",
+          "ipv6_suffix": ""
       }
   ]
 }
 ```
 
-### Compulsury parameters
+### Compulsory parameters
 
-- `"domain"`
-- `"host"` is your host and can be `""`, a subdomain or `"*"` generally
+- `"domain"` is the domain to update. It can be `example.com` (root domain), `sub.example.com` (subdomain of `example.com`) or `*.example.com` for the wildcard.
 - `"username"` is the username for your DNS API User
 - `"password"` is the password for your DNS API User
 
 ### Optional parameters
 
 - `"ttl"` can be set to an integer value for record TTL in seconds (if not set the default is 120)
-- `"ip_version"` can be `ipv4` (A records) or `ipv6` (AAAA records), and defaults to `ipv4 or ipv6`
+- `"ip_version"` can be `ipv4` (A records), or `ipv6` (AAAA records) or `ipv4 or ipv6` (update one of the two, depending on the public ip found). It defaults to `ipv4 or ipv6`.
+- `"ipv6_suffix"` is the IPv6 interface identifier suffix to use. It can be for example `0:0:0:0:72ad:8fbb:a54e:bedd/64`. If left empty, it defaults to no suffix and the raw public IPv6 address obtained is used in the record updating.
 
 ## Domain setup
 
-See [their article](https://cp.servercow.de/en/plugin/support_manager/knowledgebase/view/34/dns-api-v1/7/)
+See [their article](https://cp.servercow.de/en/plugin/support_manager/knowledgebase/view/34/dns-api-v1/7/)

docs/spdyn.md

@@ -10,12 +10,11 @@
     {
       "provider": "spdyn",
       "domain": "domain.com",
-      "host": "@",
       "user": "user",
       "password": "password",
       "token": "token",
       "ip_version": "ipv4",
-      "provider_ip": true
+      "ipv6_suffix": ""
     }
   ]
 }
@@ -23,8 +22,7 @@
 
 ### Compulsory parameters
 
-- `"domain"`
-- `"host"` is your host and can be a subdomain or `"@"`
+- `"domain"` is the domain to update. It can be `example.com` (root domain) or `sub.example.com` (subdomain of `example.com`).
 
 #### Using user and password
 
@@ -37,5 +35,5 @@
 
 ### Optional parameters
 
-- `"ip_version"` can be `ipv4` (A records) or `ipv6` (AAAA records), defaults to `ipv4 or ipv6`
-- `"provider_ip"` can be set to `true` to let your DNS provider determine your IPv4 address (**not IPv6**)automatically when you send an update request, without sending the new IP address detected by the program in the request.
+- `"ip_version"` can be `ipv4` (A records), or `ipv6` (AAAA records) or `ipv4 or ipv6` (update one of the two, depending on the public ip found). It defaults to `ipv4 or ipv6`.
+- `"ipv6_suffix"` is the IPv6 interface identifier suffix to use. It can be for example `0:0:0:0:72ad:8fbb:a54e:bedd/64`. If left empty, it defaults to no suffix and the raw public IPv6 address obtained is used in the record updating.

docs/strato.md

@@ -10,10 +10,9 @@
     {
       "provider": "strato",
       "domain": "domain.com",
-      "host": "@",
       "password": "password",
       "ip_version": "ipv4",
-      "provider_ip": true
+      "ipv6_suffix": ""
     }
   ]
 }
@@ -21,14 +20,13 @@
 
 ### Compulsory parameters
 
-- `"domain"`
-- `"host"` is your host and can be a subdomain or `"@"`
+- `"domain"` is the domain to update. It can be `example.com` (root domain) or `sub.example.com` (subdomain of `example.com`).
 - `"password"` is your dyndns password
 
 ### Optional parameters
 
-- `"ip_version"` can be `ipv4` (A records) or `ipv6` (AAAA records), defaults to `ipv4 or ipv6`
-- `"provider_ip"` can be set to `true` to let your DNS provider determine your IPv4 address (and/or IPv6 address) automatically when you send an update request, without sending the new IP address detected by the program in the request.
+- `"ip_version"` can be `ipv4` (A records), or `ipv6` (AAAA records) or `ipv4 or ipv6` (update one of the two, depending on the public ip found). It defaults to `ipv4 or ipv6`.
+- `"ipv6_suffix"` is the IPv6 interface identifier suffix to use. It can be for example `0:0:0:0:72ad:8fbb:a54e:bedd/64`. If left empty, it defaults to no suffix and the raw public IPv6 address obtained is used in the record updating.
 
 ## Domain setup
 

docs/variomedia.md

@@ -10,11 +10,10 @@
     {
       "provider": "variomedia",
       "domain": "domain.com",
-      "host": "@",
       "email": "email@domain.com",
       "password": "password",
       "ip_version": "ipv4",
-      "provider_ip": true
+      "ipv6_suffix": ""
     }
   ]
 }
@@ -22,15 +21,14 @@
 
 ### Compulsory parameters
 
-- `"domain"`
-- `"host"` is your host and can be a subdomain or `"@"`
+- `"domain"` is the domain to update. It can be `example.com` (root domain) or `sub.example.com` (subdomain of `example.com`).
 - `"email"`
 - `"password"` is your DNS settings password, not your account password ⚠️
 
 ### Optional parameters
 
-- `"ip_version"` can be `ipv4` (A records) or `ipv6` (AAAA records), defaults to `ipv4 or ipv6`
-- `"provider_ip"` can be set to `true` to let your DNS provider determine your IPv4 address (and/or IPv6 address) automatically when you send an update request, without sending the new IP address detected by the program in the request.
+- `"ip_version"` can be `ipv4` (A records), or `ipv6` (AAAA records) or `ipv4 or ipv6` (update one of the two, depending on the public ip found). It defaults to `ipv4 or ipv6`.
+- `"ipv6_suffix"` is the IPv6 interface identifier suffix to use. It can be for example `0:0:0:0:72ad:8fbb:a54e:bedd/64`. If left empty, it defaults to no suffix and the raw public IPv6 address obtained is used in the record updating.
 
 ## Domain setup
 

docs/vultr.md

@@ -0,0 +1,30 @@
+# Vultr
+
+## Configuration
+
+### Example
+
+```json
+{
+  "settings": [
+    {
+      "provider": "vultr",
+      "domain": "potato.example.com",
+      "apikey": "AAAAAAAAAAAAAAA",
+      "ttl": 300,
+      "ip_version": "ipv4"
+    }
+  ]
+}
+```
+
+### Compulsory parameters
+
+- `"domain"` is the domain to update. It can be a root domain (i.e. `example.com`) or a subdomain (i.e. `potato.example.com`) or a wildcard (i.e. `*.example.com`). In case of a wildcard, it only works if there is no existing wildcard records of any record type.
+- `"apikey"` is your API key which can be obtained from [my.vultr.com/settings/](https://my.vultr.com/settings/#settingsapi).
+
+### Optional parameters
+
+- `"ip_version"` can be `ipv4` (A records), or `ipv6` (AAAA records) or `ipv4 or ipv6` (update one of the two, depending on the public ip found). It defaults to `ipv4 or ipv6`.
+- `"ipv6_suffix"` is the IPv6 interface identifier suffix to use. It can be for example `0:0:0:0:72ad:8fbb:a54e:bedd/64`. If left empty, it defaults to no suffix and the raw public IPv6 address obtained is used in the record updating.
+- `"ttl"` is the record TTL which defaults to 900 seconds.

docs/zoneedit.md

@@ -0,0 +1,41 @@
+# Zoneedit
+
+## Configuration
+
+⚠️ zoneedit.com for some reason requires at least a 10 minutes period between update request sent.
+
+DDNS-Updater only sends update requests when it detects your domain name IP address mismatches your current public IP address,
+so it should be fine in most cases since this happens rarely (in hours/days). But in case it happens and you want to avoid this,
+set the environment variable as `PERIOD=11m` to check your public IP address and update every 11 minutes only.
+
+### Example
+
+```json
+{
+  "settings": [
+    {
+      "provider": "zoneedit",
+      "domain": "domain.com",
+      "username": "username",
+      "token": "token",
+      "ip_version": "ipv4",
+      "ipv6_suffix": ""
+    }
+  ]
+}
+```
+
+### Compulsory parameters
+
+- `"domain"` is the domain to update. It can be `example.com` (root domain), `sub.example.com` (subdomain of `example.com`) or `*.example.com` for the wildcard.
+- `"username"`
+- `"token"`
+
+### Optional parameters
+
+- `"ip_version"` can be `ipv4` (A records), or `ipv6` (AAAA records) or `ipv4 or ipv6` (update one of the two, depending on the public ip found). It defaults to `ipv4 or ipv6`.
+- `"ipv6_suffix"` is the IPv6 interface identifier suffix to use. It can be for example `0:0:0:0:72ad:8fbb:a54e:bedd/64`. If left empty, it defaults to no suffix and the raw public IPv6 address obtained is used in the record updating.
+
+## Domain setup
+
+[support.zoneedit.com/en/knowledgebase/article/dynamic-dns](https://support.zoneedit.com/en/knowledgebase/article/dynamic-dns)

go.mod

@@ -1,43 +1,39 @@
 module github.com/qdm12/ddns-updater
 
-go 1.20
+go 1.25.0
 
 require (
-	github.com/breml/rootcerts v0.2.11
-	github.com/containrrr/shoutrrr v0.7.0
-	github.com/go-chi/chi v1.5.4
+	github.com/breml/rootcerts v0.2.19
+	github.com/containrrr/shoutrrr v0.8.0
+	github.com/go-chi/chi/v5 v5.2.1
 	github.com/golang/mock v1.6.0
-	github.com/miekg/dns v1.1.42
-	github.com/qdm12/golibs v0.0.0-20210822203818-5c568b0777b6
-	github.com/qdm12/goshutdown v0.3.0
-	github.com/qdm12/gosplash v0.1.0
+	github.com/miekg/dns v1.1.70
+	github.com/qdm12/goservices v0.1.0
+	github.com/qdm12/gosettings v0.4.4
+	github.com/qdm12/gosplash v0.2.0
+	github.com/qdm12/gotree v0.3.0
 	github.com/qdm12/log v0.1.0
-	github.com/stretchr/testify v1.8.1
-	google.golang.org/api v0.102.0
+	github.com/stretchr/testify v1.10.0
+	golang.org/x/mod v0.31.0
+	golang.org/x/net v0.49.0
+	golang.org/x/oauth2 v0.28.0
 )
 
 require (
-	cloud.google.com/go/compute v1.12.1 // indirect
-	cloud.google.com/go/compute/metadata v0.2.1 // indirect
+	cloud.google.com/go/compute/metadata v0.3.0 // indirect
 	github.com/davecgh/go-spew v1.1.1 // indirect
-	github.com/fatih/color v1.13.0 // indirect
-	github.com/golang/groupcache v0.0.0-20210331224755-41bb18bfe9da // indirect
-	github.com/golang/protobuf v1.5.2 // indirect
-	github.com/google/uuid v1.3.0 // indirect
-	github.com/googleapis/enterprise-certificate-proxy v0.2.0 // indirect
-	github.com/googleapis/gax-go/v2 v2.6.0 // indirect
+	github.com/fatih/color v1.15.0 // indirect
+	github.com/go-logr/logr v1.4.1 // indirect
+	github.com/golang/protobuf v1.5.4 // indirect
 	github.com/mattn/go-colorable v0.1.13 // indirect
-	github.com/mattn/go-isatty v0.0.16 // indirect
-	github.com/phayes/permbits v0.0.0-20190612203442-39d7c581d2ee // indirect
+	github.com/mattn/go-isatty v0.0.17 // indirect
 	github.com/pmezard/go-difflib v1.0.0 // indirect
-	go.opencensus.io v0.23.0 // indirect
-	golang.org/x/net v0.1.0 // indirect
-	golang.org/x/oauth2 v0.0.0-20221014153046-6fdb5e3db783 // indirect
-	golang.org/x/sys v0.1.0 // indirect
-	golang.org/x/text v0.4.0 // indirect
-	google.golang.org/appengine v1.6.7 // indirect
-	google.golang.org/genproto v0.0.0-20221024183307-1bc688fe9f3e // indirect
-	google.golang.org/grpc v1.50.1 // indirect
-	google.golang.org/protobuf v1.28.1 // indirect
+	golang.org/x/exp v0.0.0-20231110203233-9a3e6036ecaa // indirect
+	golang.org/x/sync v0.19.0 // indirect
+	golang.org/x/sys v0.40.0 // indirect
+	golang.org/x/tools v0.40.0 // indirect
+	google.golang.org/protobuf v1.34.1 // indirect
 	gopkg.in/yaml.v3 v3.0.1 // indirect
+	kernel.org/pub/linux/libs/security/libcap/cap v1.2.69 // indirect
+	kernel.org/pub/linux/libs/security/libcap/psx v1.2.69 // indirect
 )

internal/backup/interfaces.go

@@ -0,0 +1,5 @@
+package backup
+
+type Logger interface {
+	Info(message string)
+}

internal/backup/service.go

@@ -0,0 +1,99 @@
+package backup
+
+import (
+	"context"
+	"path/filepath"
+	"strconv"
+	"time"
+)
+
+type Service struct {
+	// Injected fields
+	backupPeriod time.Duration
+	dataDir      string
+	outputDir    string
+	logger       Logger
+
+	// Internal fields
+	stopCh chan<- struct{}
+	done   <-chan struct{}
+}
+
+func New(backupPeriod time.Duration,
+	dataDir, outputDir string, logger Logger,
+) *Service {
+	return &Service{
+		logger:       logger,
+		backupPeriod: backupPeriod,
+		dataDir:      dataDir,
+		outputDir:    outputDir,
+	}
+}
+
+func (s *Service) String() string {
+	return "backup"
+}
+
+func makeZipFileName() string {
+	return "ddns-updater-backup-" + strconv.Itoa(int(time.Now().UnixNano())) + ".zip"
+}
+
+func (s *Service) Start(ctx context.Context) (runError <-chan error, startErr error) {
+	ready := make(chan struct{})
+	runErrorCh := make(chan error)
+	stopCh := make(chan struct{})
+	s.stopCh = stopCh
+	done := make(chan struct{})
+	s.done = done
+	go run(ready, runErrorCh, stopCh, done,
+		s.outputDir, s.dataDir, s.backupPeriod, s.logger)
+	select {
+	case <-ready:
+	case <-ctx.Done():
+		return nil, s.Stop()
+	}
+	return runErrorCh, nil
+}
+
+func run(ready chan<- struct{}, runError chan<- error, stopCh <-chan struct{},
+	done chan<- struct{}, outputDir, dataDir string, backupPeriod time.Duration,
+	logger Logger,
+) {
+	defer close(done)
+
+	if backupPeriod == 0 {
+		close(ready)
+		logger.Info("disabled")
+		return
+	}
+
+	logger.Info("each " + backupPeriod.String() +
+		"; writing zip files to directory " + outputDir)
+	timer := time.NewTimer(backupPeriod)
+	close(ready)
+
+	for {
+		select {
+		case <-timer.C:
+		case <-stopCh:
+			_ = timer.Stop()
+			return
+		}
+		err := zipFiles(
+			filepath.Join(outputDir, makeZipFileName()),
+			filepath.Join(dataDir, "config.json"),
+			filepath.Join(dataDir, "updates.json"),
+		)
+		if err != nil {
+			runError <- err
+			return
+		}
+		timer.Reset(backupPeriod)
+	}
+}
+
+func (s *Service) Stop() (err error) {
+	close(s.stopCh)
+	<-s.done
+	return nil
+}

internal/backup/zip.go

@@ -6,28 +6,8 @@ import (
 	"os"
 )
 
-var _ FileZiper = (*Ziper)(nil)
-
-type FileZiper interface {
-	ZipFiles(outputFilepath string, inputFilepaths ...string) error
-}
-
-type Ziper struct {
-	createFile func(name string) (*os.File, error)
-	openFile   func(name string) (*os.File, error)
-	ioCopy     func(dst io.Writer, src io.Reader) (written int64, err error)
-}
-
-func NewZiper() *Ziper {
-	return &Ziper{
-		createFile: os.Create,
-		openFile:   os.Open,
-		ioCopy:     io.Copy,
-	}
-}
-
-func (z *Ziper) ZipFiles(outputFilepath string, inputFilepaths ...string) error {
-	f, err := z.createFile(outputFilepath)
+func zipFiles(outputFilepath string, inputFilepaths ...string) error {
+	f, err := os.Create(outputFilepath)
 	if err != nil {
 		return err
 	}
@@ -35,7 +15,7 @@ func (z *Ziper) ZipFiles(outputFilepath string, inputFilepaths ...string) error
 	w := zip.NewWriter(f)
 	defer w.Close()
 	for _, filepath := range inputFilepaths {
-		err = z.addFile(w, filepath)
+		err = addFile(w, filepath)
 		if err != nil {
 			return err
 		}
@@ -43,8 +23,8 @@ func (z *Ziper) ZipFiles(outputFilepath string, inputFilepaths ...string) error
 	return nil
 }
 
-func (z *Ziper) addFile(w *zip.Writer, filepath string) error {
-	f, err := z.openFile(filepath)
+func addFile(w *zip.Writer, filepath string) error {
+	f, err := os.Open(filepath)
 	if err != nil {
 		return err
 	}
@@ -65,6 +45,6 @@ func (z *Ziper) addFile(w *zip.Writer, filepath string) error {
 	if err != nil {
 		return err
 	}
-	_, err = z.ioCopy(ioWriter, f)
+	_, err = io.Copy(ioWriter, f)
 	return err
 }

internal/config/backup.go

@@ -1,27 +1,47 @@
 package config
 
 import (
-	"fmt"
 	"time"
 
-	"github.com/qdm12/golibs/params"
+	"github.com/qdm12/gosettings"
+	"github.com/qdm12/gosettings/reader"
+	"github.com/qdm12/gotree"
 )
 
 type Backup struct {
-	Period    time.Duration
-	Directory string
+	Period    *time.Duration
+	Directory *string
 }
 
-func (b *Backup) get(env params.Interface) (err error) {
-	b.Period, err = env.Duration("BACKUP_PERIOD", params.Default("0"))
-	if err != nil {
-		return fmt.Errorf("%w: for environment variable BACKUP_PERIOD", err)
-	}
-
-	b.Directory, err = env.Path("BACKUP_DIRECTORY", params.Default("./data"))
-	if err != nil {
-		return fmt.Errorf("%w: for environment variable BACKUP_DIRECTORY", err)
-	}
+func (b *Backup) setDefaults() {
+	b.Period = gosettings.DefaultPointer(b.Period, 0)
+	b.Directory = gosettings.DefaultPointer(b.Directory, "./data")
+}
 
+func (b Backup) Validate() (err error) {
+	return nil
+}
+
+func (b Backup) String() string {
+	return b.toLinesNode().String()
+}
+
+func (b Backup) toLinesNode() *gotree.Node {
+	if *b.Period == 0 {
+		return gotree.New("Backup: disabled")
+	}
+	node := gotree.New("Backup")
+	node.Appendf("Period: %s", b.Period)
+	node.Appendf("Directory: %s", *b.Directory)
+	return node
+}
+
+func (b *Backup) read(reader *reader.Reader) (err error) {
+	b.Period, err = reader.DurationPtr("BACKUP_PERIOD")
+	if err != nil {
+		return err
+	}
+
+	b.Directory = reader.Get("BACKUP_DIRECTORY")
 	return nil
 }

internal/config/client.go

@@ -1,20 +1,40 @@
 package config
 
 import (
-	"fmt"
 	"time"
 
-	"github.com/qdm12/golibs/params"
+	"github.com/qdm12/gosettings"
+	"github.com/qdm12/gosettings/reader"
+	"github.com/qdm12/gotree"
 )
 
 type Client struct {
 	Timeout time.Duration
 }
 
-func (c *Client) get(env params.Interface) (err error) {
-	c.Timeout, err = env.Duration("HTTP_TIMEOUT", params.Default("10s"))
+func (c *Client) setDefaults() {
+	const defaultTimeout = 20 * time.Second
+	c.Timeout = gosettings.DefaultComparable(c.Timeout, defaultTimeout)
+}
+
+func (c Client) Validate() (err error) {
+	return nil
+}
+
+func (c Client) String() string {
+	return c.toLinesNode().String()
+}
+
+func (c Client) toLinesNode() *gotree.Node {
+	node := gotree.New("HTTP client")
+	node.Appendf("Timeout: %s", c.Timeout)
+	return node
+}
+
+func (c *Client) read(reader *reader.Reader) (err error) {
+	c.Timeout, err = reader.Duration("HTTP_TIMEOUT")
 	if err != nil {
-		return fmt.Errorf("%w: for environment variable HTTP_TIMEOUT", err)
+		return err
 	}
 
 	return nil

internal/config/config.go

@@ -1,86 +0,0 @@
-package config
-
-import (
-	"fmt"
-
-	"github.com/qdm12/ddns-updater/internal/resolver"
-	"github.com/qdm12/golibs/params"
-)
-
-type Config struct {
-	Client   Client
-	Update   Update
-	PubIP    PubIP
-	Resolver resolver.Settings
-	IPv6     IPv6
-	Server   Server
-	Health   Health
-	Paths    Paths
-	Backup   Backup
-	Logger   Logger
-	Shoutrrr Shoutrrr
-}
-
-func (c *Config) Get(env params.Interface) (warnings []string, err error) {
-	err = c.Client.get(env)
-	if err != nil {
-		return warnings, err
-	}
-
-	warning, err := c.Update.get(env)
-	warnings = appendIfNotEmpty(warnings, warning)
-	if err != nil {
-		return warnings, err
-	}
-
-	newWarnings, err := c.PubIP.get(env)
-	warnings = append(warnings, newWarnings...)
-	if err != nil {
-		return warnings, err
-	}
-
-	c.Resolver, err = readResolver()
-	if err != nil {
-		return warnings, fmt.Errorf("reading resolver settings: %w", err)
-	}
-
-	err = c.IPv6.get(env)
-	if err != nil {
-		return warnings, err
-	}
-
-	warning, err = c.Server.get(env)
-	warnings = appendIfNotEmpty(warnings, warning)
-	if err != nil {
-		return warnings, err
-	}
-
-	warning, err = c.Health.Get(env)
-	warnings = appendIfNotEmpty(warnings, warning)
-	if err != nil {
-		return warnings, err
-	}
-
-	err = c.Paths.get(env)
-	if err != nil {
-		return warnings, err
-	}
-
-	err = c.Backup.get(env)
-	if err != nil {
-		return warnings, err
-	}
-
-	c.Logger, err = readLog()
-	if err != nil {
-		return warnings, err
-	}
-
-	newWarnings, err = c.Shoutrrr.get(env)
-	warnings = append(warnings, newWarnings...)
-	if err != nil {
-		return warnings, err
-	}
-
-	return warnings, nil
-}

internal/config/health.go

@@ -2,31 +2,66 @@ package config
 
 import (
 	"fmt"
-	"net"
-	"strconv"
+	"net/url"
+	"os"
 
-	"github.com/qdm12/golibs/params"
+	"github.com/qdm12/gosettings"
+	"github.com/qdm12/gosettings/reader"
+	"github.com/qdm12/gosettings/validate"
+	"github.com/qdm12/gotree"
 )
 
 type Health struct {
-	ServerAddress string
-	Port          uint16 // obtained from ServerAddress
+	// ServerAddress is the listening address:port of the
+	// health server, which defaults to the empty string,
+	// meaning the server will not run.
+	ServerAddress         *string
+	HealthchecksioBaseURL string
+	HealthchecksioUUID    *string
 }
 
-func (h *Health) Get(env params.Interface) (warning string, err error) {
-	h.ServerAddress, warning, err = env.ListeningAddress(
-		"HEALTH_SERVER_ADDRESS", params.Default("127.0.0.1:9999"))
-	if err != nil {
-		return warning, fmt.Errorf("%w: for environment variable HEALTH_SERVER_ADDRESS", err)
-	}
-	_, portStr, err := net.SplitHostPort(h.ServerAddress)
-	if err != nil {
-		return warning, fmt.Errorf("%w: for environment variable HEALTH_SERVER_ADDRESS", err)
-	}
-	port, err := strconv.Atoi(portStr)
-	if err != nil {
-		return warning, fmt.Errorf("%w: for environment variable HEALTH_SERVER_ADDRESS", err)
-	}
-	h.Port = uint16(port)
-	return warning, nil
+func (h *Health) SetDefaults() {
+	h.ServerAddress = gosettings.DefaultPointer(h.ServerAddress, "")
+	h.HealthchecksioBaseURL = gosettings.DefaultComparable(h.HealthchecksioBaseURL, "https://hc-ping.com")
+	h.HealthchecksioUUID = gosettings.DefaultPointer(h.HealthchecksioUUID, "")
+}
+
+func (h Health) Validate() (err error) {
+	if *h.ServerAddress != "" {
+		err = validate.ListeningAddress(*h.ServerAddress, os.Getuid())
+		if err != nil {
+			return fmt.Errorf("server listening address: %w", err)
+		}
+	}
+
+	_, err = url.Parse(h.HealthchecksioBaseURL)
+	if err != nil {
+		return fmt.Errorf("healthchecks.io base URL: %w", err)
+	}
+
+	return nil
+}
+
+func (h Health) String() string {
+	return h.toLinesNode().String()
+}
+
+func (h Health) toLinesNode() *gotree.Node {
+	node := gotree.New("Health")
+	if *h.ServerAddress == "" {
+		node.Appendf("Server is disabled")
+	} else {
+		node.Appendf("Server listening address: %s", *h.ServerAddress)
+	}
+	if *h.HealthchecksioUUID != "" {
+		node.Appendf("Healthchecks.io base URL: %s", h.HealthchecksioBaseURL)
+		node.Appendf("Healthchecks.io UUID: %s", *h.HealthchecksioUUID)
+	}
+	return node
+}
+
+func (h *Health) Read(reader *reader.Reader) {
+	h.ServerAddress = reader.Get("HEALTH_SERVER_ADDRESS")
+	h.HealthchecksioBaseURL = reader.String("HEALTH_HEALTHCHECKSIO_BASE_URL")
+	h.HealthchecksioUUID = reader.Get("HEALTH_HEALTHCHECKSIO_UUID")
 }

internal/config/helpers.go

@@ -0,0 +1,3 @@
+package config
+
+const all = "all"

internal/config/ipv6.go

@@ -1,60 +0,0 @@
-package config
-
-import (
-	"errors"
-	"fmt"
-	"net"
-	"strings"
-
-	"github.com/qdm12/golibs/params"
-)
-
-type IPv6 struct {
-	Mask net.IPMask
-}
-
-func (i *IPv6) get(env params.Interface) (err error) {
-	maskStr, err := env.Get("IPV6_PREFIX", params.Default("/128"))
-	if err != nil {
-		return fmt.Errorf("%w: for environment variable IPV6_PREFIX", err)
-	}
-	i.Mask, err = ipv6DecimalPrefixToMask(maskStr)
-	if err != nil {
-		return fmt.Errorf("%w: for environment variable IPV6_PREFIX", err)
-	}
-
-	return nil
-}
-
-var ErrParsePrefix = errors.New("cannot parse IP prefix")
-
-func ipv6DecimalPrefixToMask(prefixDecimal string) (ipMask net.IPMask, err error) {
-	if prefixDecimal == "" {
-		return nil, fmt.Errorf("%w: empty prefix", ErrParsePrefix)
-	}
-
-	prefixDecimal = strings.TrimPrefix(prefixDecimal, "/")
-
-	const bits = 8 * net.IPv6len
-
-	ones, consumed, ok := decimalToInteger(prefixDecimal)
-	if !ok || consumed != len(prefixDecimal) || ones < 0 || ones > bits {
-		return nil, fmt.Errorf("%w: %s", ErrParsePrefix, prefixDecimal)
-	}
-
-	return net.CIDRMask(ones, bits), nil
-}
-
-func decimalToInteger(s string) (ones int, i int, ok bool) {
-	const big = 0xFFFFFF // Bigger than we need, not too big to worry about overflow
-	const ten = 10
-
-	for i = 0; i < len(s) && '0' <= s[i] && s[i] <= '9'; i++ {
-		ones = ones*ten + int(s[i]-'0')
-		if ones >= big {
-			return big, i, false
-		}
-	}
-
-	return ones, i, true
-}

internal/config/ipv6_test.go

@@ -1,62 +0,0 @@
-package config
-
-import (
-	"fmt"
-	"net"
-	"testing"
-
-	"github.com/stretchr/testify/assert"
-	"github.com/stretchr/testify/require"
-)
-
-func Test_ipv6DecimalPrefixToMask(t *testing.T) {
-	t.Parallel()
-
-	testCases := map[string]struct {
-		prefixDecimal string
-		ipMask        net.IPMask
-		err           error
-	}{
-		"empty": {
-			err: fmt.Errorf("cannot parse IP prefix: empty prefix"),
-		},
-		"malformed": {
-			prefixDecimal: "malformed",
-			err:           fmt.Errorf("cannot parse IP prefix: malformed"),
-		},
-		"with leading slash": {
-			prefixDecimal: "/78",
-			ipMask:        net.IPMask{255, 255, 255, 255, 255, 255, 255, 255, 255, 252, 0, 0, 0, 0, 0, 0},
-		},
-		"without leading slash": {
-			prefixDecimal: "78",
-			ipMask:        net.IPMask{255, 255, 255, 255, 255, 255, 255, 255, 255, 252, 0, 0, 0, 0, 0, 0},
-		},
-		"full IPv6 mask": {
-			prefixDecimal: "/128",
-			ipMask:        net.IPMask{255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255},
-		},
-		"zero IPv6 mask": {
-			prefixDecimal: "/0",
-			ipMask:        net.IPMask{0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0},
-		},
-	}
-
-	for name, testCase := range testCases {
-		testCase := testCase
-		t.Run(name, func(t *testing.T) {
-			t.Parallel()
-
-			ipMask, err := ipv6DecimalPrefixToMask(testCase.prefixDecimal)
-
-			if testCase.err != nil {
-				require.Error(t, err)
-				assert.Equal(t, testCase.err.Error(), err.Error())
-			} else {
-				assert.NoError(t, err)
-			}
-
-			assert.Equal(t, testCase.ipMask, ipMask)
-		})
-	}
-}

internal/config/logger.go

@@ -1,73 +1,65 @@
 package config
 
 import (
-	"errors"
 	"fmt"
-	"os"
 	"strings"
 
+	"github.com/qdm12/gosettings"
+	"github.com/qdm12/gosettings/reader"
+	"github.com/qdm12/gosettings/validate"
+	"github.com/qdm12/gotree"
 	"github.com/qdm12/log"
 )
 
 type Logger struct {
-	Caller bool
-	Level  log.Level
+	Level  string
+	Caller string
 }
 
-var (
-	ErrLogCallerNotValid = errors.New("LOG_CALLER value is not valid")
-)
+func (l *Logger) setDefaults() {
+	l.Level = gosettings.DefaultComparable(l.Level, log.LevelInfo.String())
+	l.Caller = gosettings.DefaultComparable(l.Caller, "hidden")
+}
 
-func readLog() (settings Logger, err error) {
-	callerString := os.Getenv("LOG_CALLER")
-	switch callerString {
-	case "":
-	case "hidden":
-	case "short":
-		settings.Caller = true
-	default:
-		return settings, fmt.Errorf("%w: "+
-			`%q must be one of "", "hidden" or "short"`,
-			ErrLogCallerNotValid, callerString)
-	}
-
-	settings.Level, err = readLogLevel()
+func (l Logger) Validate() (err error) {
+	_, err = log.ParseLevel(l.Level)
 	if err != nil {
-		return settings, err
+		return fmt.Errorf("log level: %w", err)
 	}
 
-	return settings, nil
-}
-
-func readLogLevel() (level log.Level, err error) {
-	s := os.Getenv("LOG_LEVEL")
-	if s == "" {
-		return log.LevelInfo, nil
-	}
-
-	level, err = parseLogLevel(s)
+	err = validate.IsOneOf(l.Caller, "hidden", "short")
 	if err != nil {
-		return level, fmt.Errorf("environment variable LOG_LEVEL: %w", err)
+		return fmt.Errorf("log caller: %w", err)
 	}
 
-	return level, nil
+	return nil
 }
 
-var ErrLogLevelUnknown = errors.New("log level is unknown")
-
-func parseLogLevel(s string) (level log.Level, err error) {
-	switch strings.ToLower(s) {
-	case "debug":
-		return log.LevelDebug, nil
-	case "info":
-		return log.LevelInfo, nil
-	case "warning":
-		return log.LevelWarn, nil
-	case "error":
-		return log.LevelError, nil
-	default:
-		return level, fmt.Errorf(
-			"%w: %q is not valid and can be one of debug, info, warning or error",
-			ErrLogLevelUnknown, s)
+func (l Logger) ToOptions() (options []log.Option) {
+	level, _ := log.ParseLevel(l.Level)
+	options = append(options, log.SetLevel(level))
+	if l.Caller == "short" {
+		options = append(options, log.SetCallerFile(true), log.SetCallerLine(true))
 	}
+	return options
+}
+
+func (l Logger) String() string {
+	return l.toLinesNode().String()
+}
+
+func (l Logger) toLinesNode() *gotree.Node {
+	node := gotree.New("Logger")
+	node.Appendf("Level: %s", l.Level)
+	node.Appendf("Caller: %s", l.Caller)
+	return node
+}
+
+func (l *Logger) read(reader *reader.Reader) {
+	l.Level = reader.String("LOG_LEVEL")
+	// Retro compatibility
+	if strings.ToLower(l.Level) == "warning" {
+		l.Level = "warn"
+	}
+	l.Caller = reader.String("LOG_CALLER")
 }

internal/config/paths.go

@@ -2,22 +2,72 @@ package config
 
 import (
 	"fmt"
+	"io/fs"
 	"path/filepath"
+	"strconv"
 
-	"github.com/qdm12/golibs/params"
+	"github.com/qdm12/gosettings"
+	"github.com/qdm12/gosettings/reader"
+	"github.com/qdm12/gotree"
 )
 
 type Paths struct {
-	DataDir string
-	JSON    string // obtained from DataDir
+	DataDir *string
+	Config  *string
+	// Umask is the custom umask to use for the system, if different than zero.
+	// If it is set to zero, the system umask is unchanged.
+	// It cannot be nil in the internal state.
+	Umask *fs.FileMode
 }
 
-func (p *Paths) get(env params.Interface) (err error) {
-	p.DataDir, err = env.Path("DATADIR", params.Default("./data"))
-	if err != nil {
-		return fmt.Errorf("%w: for environment variable DATADIR", err)
-	}
+func (p *Paths) setDefaults() {
+	p.DataDir = gosettings.DefaultPointer(p.DataDir, "./data")
+	defaultConfig := filepath.Join(*p.DataDir, "config.json")
+	p.Config = gosettings.DefaultPointer(p.Config, defaultConfig)
+	p.Umask = gosettings.DefaultPointer(p.Umask, fs.FileMode(0))
+}
 
-	p.JSON = filepath.Join(p.DataDir, "config.json")
+func (p Paths) Validate() (err error) {
 	return nil
 }
+
+func (p Paths) String() string {
+	return p.toLinesNode().String()
+}
+
+func (p Paths) toLinesNode() *gotree.Node {
+	node := gotree.New("Paths")
+	node.Appendf("Data directory: %s", *p.DataDir)
+	node.Appendf("Config file: %s", *p.Config)
+	umaskString := "system default"
+	if *p.Umask != 0 {
+		umaskString = p.Umask.String()
+	}
+	node.Appendf("Umask: %s", umaskString)
+	return node
+}
+
+func (p *Paths) read(reader *reader.Reader) (err error) {
+	p.DataDir = reader.Get("DATADIR")
+	p.Config = reader.Get("CONFIG_FILEPATH")
+
+	umaskString := reader.String("UMASK")
+	if umaskString != "" {
+		umask, err := parseUmask(umaskString)
+		if err != nil {
+			return fmt.Errorf("parse umask: %w", err)
+		}
+		p.Umask = &umask
+	}
+
+	return nil
+}
+
+func parseUmask(s string) (umask fs.FileMode, err error) {
+	const base, bitSize = 8, 32
+	umaskUint64, err := strconv.ParseUint(s, base, bitSize)
+	if err != nil {
+		return 0, err
+	}
+	return fs.FileMode(umaskUint64), nil
+}

internal/config/paths_test.go

@@ -0,0 +1,46 @@
+package config
+
+import (
+	"io/fs"
+	"testing"
+
+	"github.com/stretchr/testify/assert"
+)
+
+func Test_parseUmask(t *testing.T) {
+	t.Parallel()
+
+	testCases := map[string]struct {
+		s          string
+		umask      fs.FileMode
+		errMessage string
+	}{
+		"invalid": {
+			s:          "a",
+			errMessage: `strconv.ParseUint: parsing "a": invalid syntax`,
+		},
+		"704": {
+			s:     "704",
+			umask: 0o704,
+		},
+		"0704": {
+			s:     "0704",
+			umask: 0o0704,
+		},
+	}
+
+	for name, testCase := range testCases {
+		t.Run(name, func(t *testing.T) {
+			t.Parallel()
+
+			umask, err := parseUmask(testCase.s)
+
+			if testCase.errMessage != "" {
+				assert.EqualError(t, err, testCase.errMessage)
+			} else {
+				assert.NoError(t, err)
+			}
+			assert.Equal(t, testCase.umask, umask)
+		})
+	}
+}

internal/config/pubip.go

@@ -5,193 +5,335 @@ import (
 	"fmt"
 	"net/url"
 	"strings"
+	"time"
 
-	"github.com/qdm12/ddns-updater/pkg/publicip"
 	"github.com/qdm12/ddns-updater/pkg/publicip/dns"
 	"github.com/qdm12/ddns-updater/pkg/publicip/http"
 	"github.com/qdm12/ddns-updater/pkg/publicip/ipversion"
-	"github.com/qdm12/golibs/params"
+	"github.com/qdm12/gosettings"
+	"github.com/qdm12/gosettings/reader"
+	"github.com/qdm12/gosettings/validate"
+	"github.com/qdm12/gotree"
 )
 
-const all = "all"
-
 type PubIP struct {
-	HTTPSettings publicip.HTTPSettings
-	DNSSettings  publicip.DNSSettings
+	HTTPEnabled       *bool
+	HTTPIPProviders   []string
+	HTTPIPv4Providers []string
+	HTTPIPv6Providers []string
+	DNSEnabled        *bool
+	DNSProviders      []string
+	DNSTimeout        time.Duration
 }
 
-func (p *PubIP) get(env params.Interface) (warnings []string, err error) {
-	err = p.getFetchers(env)
+func (p *PubIP) setDefaults() {
+	p.HTTPEnabled = gosettings.DefaultPointer(p.HTTPEnabled, true)
+	p.HTTPIPProviders = gosettings.DefaultSlice(p.HTTPIPProviders, []string{all})
+	p.HTTPIPv4Providers = gosettings.DefaultSlice(p.HTTPIPv4Providers, []string{all})
+	p.HTTPIPv6Providers = gosettings.DefaultSlice(p.HTTPIPv6Providers, []string{all})
+	p.DNSEnabled = gosettings.DefaultPointer(p.DNSEnabled, true)
+	p.DNSProviders = gosettings.DefaultSlice(p.DNSProviders, []string{all})
+	const defaultDNSTimeout = 3 * time.Second
+	p.DNSTimeout = gosettings.DefaultComparable(p.DNSTimeout, defaultDNSTimeout)
+}
+
+func (p PubIP) Validate() (err error) {
+	err = p.validateHTTPIPProviders()
 	if err != nil {
-		return nil, err
+		return fmt.Errorf("HTTP IP providers: %w", err)
 	}
 
-	httpIPProviders, warning, err := p.getIPHTTPProviders(env)
-	warnings = appendIfNotEmpty(warnings, warning)
+	err = p.validateHTTPIPv4Providers()
 	if err != nil {
-		return warnings, err
+		return fmt.Errorf("HTTP IPv4 providers: %w", err)
 	}
-	httpIP4Providers, warning, err := p.getIPv4HTTPProviders(env)
-	warnings = appendIfNotEmpty(warnings, warning)
+
+	err = p.validateHTTPIPv6Providers()
 	if err != nil {
-		return warnings, err
+		return fmt.Errorf("HTTP IPv6 providers: %w", err)
 	}
-	httpIP6Providers, warning, err := p.getIPv6HTTPProviders(env)
-	warnings = appendIfNotEmpty(warnings, warning)
+
+	err = p.validateDNSProviders()
 	if err != nil {
-		return warnings, err
+		return fmt.Errorf("DNS providers: %w", err)
 	}
-	p.HTTPSettings.Options = []http.Option{
+
+	return nil
+}
+
+func (p *PubIP) String() string {
+	return p.toLinesNode().String()
+}
+
+func (p *PubIP) toLinesNode() (node *gotree.Node) {
+	node = gotree.New("Public IP fetching")
+
+	node.Appendf("HTTP enabled: %s", gosettings.BoolToYesNo(p.HTTPEnabled))
+	if *p.HTTPEnabled {
+		childNode := node.Append("HTTP IP providers")
+		for _, provider := range p.HTTPIPProviders {
+			childNode.Append(provider)
+		}
+
+		childNode = node.Append("HTTP IPv4 providers")
+		for _, provider := range p.HTTPIPv4Providers {
+			childNode.Append(provider)
+		}
+
+		childNode = node.Append("HTTP IPv6 providers")
+		for _, provider := range p.HTTPIPv6Providers {
+			childNode.Append(provider)
+		}
+	}
+
+	node.Appendf("DNS enabled: %s", gosettings.BoolToYesNo(p.DNSEnabled))
+	if *p.DNSEnabled {
+		node.Appendf("DNS timeout: %s", p.DNSTimeout)
+		childNode := node.Append("DNS over TLS providers")
+		for _, provider := range p.DNSProviders {
+			childNode.Append(provider)
+		}
+	}
+
+	return node
+}
+
+// ToHTTPOptions assumes the settings have been validated.
+func (p *PubIP) ToHTTPOptions() (options []http.Option) {
+	httpIPProviders := stringsToHTTPProviders(p.HTTPIPProviders, ipversion.IP4or6)
+	httpIPv4Providers := stringsToHTTPProviders(p.HTTPIPv4Providers, ipversion.IP4)
+	httpIPv6Providers := stringsToHTTPProviders(p.HTTPIPv6Providers, ipversion.IP6)
+	return []http.Option{
 		http.SetProvidersIP(httpIPProviders[0], httpIPProviders[1:]...),
-		http.SetProvidersIP4(httpIP4Providers[0], httpIP4Providers[1:]...),
-		http.SetProvidersIP6(httpIP6Providers[0], httpIP6Providers[1:]...),
+		http.SetProvidersIP4(httpIPv4Providers[0], httpIPv4Providers[1:]...),
+		http.SetProvidersIP6(httpIPv6Providers[0], httpIPv6Providers[1:]...),
 	}
-
-	dnsIPProviders, err := p.getDNSProviders(env)
-	if err != nil {
-		return warnings, err
-	}
-
-	dnsTimeout, err := env.Duration("PUBLICIP_DNS_TIMEOUT", params.Default("3s"))
-	if err != nil {
-		return warnings, err
-	}
-
-	p.DNSSettings.Options = []dns.Option{
-		dns.SetTimeout(dnsTimeout),
-		dns.SetProviders(dnsIPProviders[0], dnsIPProviders[1:]...),
-	}
-
-	return warnings, nil
 }
 
-var ErrInvalidFetcher = errors.New("invalid fetcher specified")
-
-func (p *PubIP) getFetchers(env params.Interface) (err error) {
-	s, err := env.Get("PUBLICIP_FETCHERS", params.Default(all))
-	if err != nil {
-		return fmt.Errorf("%w: for environment variable PUBLICIP_FETCHERS", err)
-	}
-
-	fields := strings.Split(s, ",")
-	for i, field := range fields {
-		switch strings.ToLower(field) {
-		case all:
-			p.HTTPSettings.Enabled = true
-			p.DNSSettings.Enabled = true
-		case "http":
-			p.HTTPSettings.Enabled = true
-		case "dns":
-			p.DNSSettings.Enabled = true
-		default:
-			err = fmt.Errorf(
-				"%w: %q at position %d of %d",
-				ErrInvalidFetcher, field, i+1, len(fields))
-		}
-	}
-
-	return err
-}
-
-// getDNSProviders obtains the DNS providers to obtain your public IPv4 and/or IPv6 address.
-func (p *PubIP) getDNSProviders(env params.Interface) (providers []dns.Provider, err error) {
-	s, err := env.Get("PUBLICIP_DNS_PROVIDERS", params.Default(all))
-	if err != nil {
-		return nil, fmt.Errorf("%w: for environment variable PUBLICIP_DNS_PROVIDERS", err)
-	}
-
-	availableProviders := dns.ListProviders()
-
-	fields := strings.Split(s, ",")
-	providers = make([]dns.Provider, len(fields))
-	for i, field := range fields {
-		if field == all {
-			return availableProviders, nil
-		}
-
-		providers[i] = dns.Provider(field)
-		err = dns.ValidateProvider(providers[i])
-		if err != nil {
-			return nil, err
-		}
-	}
-
-	return providers, nil
-}
-
-// getHTTPProviders obtains the HTTP providers to obtain your public IPv4 or IPv6 address.
-func (p *PubIP) getIPHTTPProviders(env params.Interface) (
-	providers []http.Provider, warning string, err error) {
-	return httpIPMethod(env, "PUBLICIP_HTTP_PROVIDERS", "IP_METHOD", ipversion.IP4or6)
-}
-
-// getIPv4HTTPProviders obtains the HTTP providers to obtain your public IPv4 address.
-func (p *PubIP) getIPv4HTTPProviders(env params.Interface) (
-	providers []http.Provider, warning string, err error) {
-	return httpIPMethod(env, "PUBLICIPV4_HTTP_PROVIDERS", "IPV4_METHOD", ipversion.IP4)
-}
-
-// getIPv6HTTPProviders obtains the HTTP providers to obtain your public IPv6 address.
-func (p *PubIP) getIPv6HTTPProviders(env params.Interface) (
-	providers []http.Provider, warning string, err error) {
-	return httpIPMethod(env, "PUBLICIPV6_HTTP_PROVIDERS", "IPV6_METHOD", ipversion.IP6)
-}
-
-var (
-	ErrInvalidPublicIPHTTPProvider = errors.New("invalid public IP HTTP provider")
-)
-
-func httpIPMethod(env params.Interface, envKey, retroKey string, version ipversion.IPVersion) (
-	providers []http.Provider, warning string, err error) {
-	retroKeyOption := params.RetroKeys([]string{retroKey}, func(oldKey, newKey string) {
-		warning = "You are using an old environment variable " + oldKey +
-			" please change it to " + newKey
-	})
-	s, err := env.Get(envKey, params.Default("cycle"), retroKeyOption)
-	if err != nil {
-		return nil, warning, fmt.Errorf("%w: for environment variable %s", err, envKey)
-	}
-
-	availableProviders := http.ListProvidersForVersion(version)
-	choices := make(map[http.Provider]struct{}, len(availableProviders))
-	for _, provider := range availableProviders {
-		choices[provider] = struct{}{}
-	}
-
-	fields := strings.Split(s, ",")
-
-	for _, field := range fields {
-		// Retro-compatibility.
-		switch field {
-		case "ipify6":
-			field = "ipify"
-		case "noip4", "noip6", "noip8245_4", "noip8245_6":
-			field = "noip"
-		case "cycle":
-			field = all
-		}
-
-		if field == all {
-			return availableProviders, warning, nil
-		}
-
-		// Custom URL check
-		url, err := url.Parse(field)
-		if err == nil && url != nil && url.Scheme == "https" {
-			providers = append(providers, http.CustomProvider(url))
+func stringsToHTTPProviders(providers []string, ipVersion ipversion.IPVersion) (
+	updatedProviders []http.Provider,
+) {
+	updatedProvidersSet := make(map[string]struct{}, len(providers))
+	for _, provider := range providers {
+		if provider != all {
+			updatedProvidersSet[provider] = struct{}{}
 			continue
 		}
 
-		provider := http.Provider(field)
-		if _, ok := choices[provider]; !ok {
-			return nil, warning, fmt.Errorf("%w: %s", ErrInvalidPublicIPHTTPProvider, provider)
+		allProviders := http.ListProvidersForVersion(ipVersion)
+		for _, provider := range allProviders {
+			updatedProvidersSet[string(provider)] = struct{}{}
 		}
-		providers = append(providers, provider)
 	}
 
-	if len(providers) == 0 {
-		return nil, warning, fmt.Errorf("%w: for IP version %s", ErrInvalidPublicIPHTTPProvider, version)
+	updatedProviders = make([]http.Provider, 0, len(updatedProvidersSet))
+	for provider := range updatedProvidersSet {
+		updatedProviders = append(updatedProviders, http.Provider(provider))
 	}
 
-	return providers, warning, nil
+	return updatedProviders
+}
+
+// ToDNSPOptions assumes the settings have been validated.
+func (p *PubIP) ToDNSPOptions() (options []dns.Option) {
+	uniqueProviders := make(map[string]struct{}, len(p.DNSProviders))
+	for _, provider := range p.DNSProviders {
+		if provider != all {
+			uniqueProviders[provider] = struct{}{}
+		}
+
+		allProviders := dns.ListProviders()
+		for _, provider := range allProviders {
+			uniqueProviders[string(provider)] = struct{}{}
+		}
+	}
+
+	providers := make([]dns.Provider, 0, len(uniqueProviders))
+	for providerString := range uniqueProviders {
+		providers = append(providers, dns.Provider(providerString))
+	}
+
+	return []dns.Option{
+		dns.SetTimeout(p.DNSTimeout),
+		dns.SetProviders(providers[0], providers[1:]...),
+	}
+}
+
+var ErrNoPublicIPDNSProvider = errors.New("no public IP DNS provider specified")
+
+func (p PubIP) validateDNSProviders() (err error) {
+	if len(p.DNSProviders) == 0 {
+		return fmt.Errorf("%w", ErrNoPublicIPDNSProvider)
+	}
+
+	availableProviders := dns.ListProviders()
+	validChoices := make([]string, len(availableProviders)+1)
+	for i, provider := range availableProviders {
+		validChoices[i] = string(provider)
+	}
+	validChoices[len(validChoices)-1] = all
+	return validate.AreAllOneOf(p.DNSProviders, validChoices)
+}
+
+func (p PubIP) validateHTTPIPProviders() (err error) {
+	return validateHTTPIPProviders(p.HTTPIPProviders, ipversion.IP4or6)
+}
+
+func (p PubIP) validateHTTPIPv4Providers() (err error) {
+	return validateHTTPIPProviders(p.HTTPIPv4Providers, ipversion.IP4)
+}
+
+func (p PubIP) validateHTTPIPv6Providers() (err error) {
+	return validateHTTPIPProviders(p.HTTPIPv6Providers, ipversion.IP6)
+}
+
+var (
+	ErrNoPublicIPHTTPProvider = errors.New("no public IP HTTP provider specified")
+	ErrURLIsNotValidHTTPS     = errors.New("URL is not valid or not HTTPS")
+)
+
+func validateHTTPIPProviders(providerStrings []string,
+	version ipversion.IPVersion,
+) (err error) {
+	if len(providerStrings) == 0 {
+		return fmt.Errorf("%w", ErrNoPublicIPHTTPProvider)
+	}
+
+	availableProviders := http.ListProvidersForVersion(version)
+	choices := make(map[string]struct{}, len(availableProviders)+1)
+	choices[all] = struct{}{}
+	for i := range availableProviders {
+		choices[string(availableProviders[i])] = struct{}{}
+	}
+
+	for _, providerString := range providerStrings {
+		if providerString == "noip" {
+			// NoIP is no longer supported because the echo service
+			// only works over plaintext HTTP and could be tempered with.
+			// Silently discard it and it will default to another HTTP IP
+			// echo service.
+			continue
+		}
+
+		// Custom URL check
+		if strings.HasPrefix(providerString, "url:") {
+			url, err := url.Parse(providerString[4:])
+			if err != nil || url.Scheme != "https" {
+				return fmt.Errorf("%w: %s", ErrURLIsNotValidHTTPS, providerString)
+			}
+			continue
+		}
+
+		_, ok := choices[providerString]
+		if !ok {
+			return fmt.Errorf("%w: %s", validate.ErrValueNotOneOf, providerString)
+		}
+	}
+
+	return nil
+}
+
+func (p *PubIP) read(r *reader.Reader, warner Warner) (err error) {
+	p.HTTPEnabled, p.DNSEnabled, err = getFetchers(r)
+	if err != nil {
+		return err
+	}
+
+	p.HTTPIPProviders = r.CSV("PUBLICIP_HTTP_PROVIDERS",
+		reader.RetroKeys("IP_METHOD"))
+	p.HTTPIPv4Providers = r.CSV("PUBLICIPV4_HTTP_PROVIDERS",
+		reader.RetroKeys("IPV4_METHOD"))
+	p.HTTPIPv6Providers = r.CSV("PUBLICIPV6_HTTP_PROVIDERS",
+		reader.RetroKeys("IPV6_METHOD"))
+
+	// Retro-compatibility
+	for i := range p.HTTPIPProviders {
+		p.HTTPIPProviders[i] = handleRetroProvider(p.HTTPIPProviders[i])
+	}
+	for i := range p.HTTPIPv4Providers {
+		p.HTTPIPv4Providers[i] = handleRetroProvider(p.HTTPIPv4Providers[i])
+	}
+	for i := range p.HTTPIPv6Providers {
+		p.HTTPIPv6Providers[i] = handleRetroProvider(p.HTTPIPv6Providers[i])
+	}
+
+	// Retro-compatibility for now defunct opendns http provider for ipv4 or ipv6
+	if len(p.HTTPIPProviders) > 0 { // check to avoid transforming `nil` to `[]`
+		httpIPProvidersTemp := make([]string, len(p.HTTPIPProviders))
+		copy(httpIPProvidersTemp, p.HTTPIPProviders)
+		p.HTTPIPProviders = make([]string, 0, len(p.HTTPIPProviders))
+		for _, provider := range httpIPProvidersTemp {
+			switch provider {
+			case "opendns": // no longer available, for a long time
+			case "google": // found no longer working on 2024.09.17
+				warner.Warnf("http provider google will be ignored " +
+					"since it is no longer supported by Google")
+			default:
+				p.HTTPIPProviders = append(p.HTTPIPProviders, provider)
+			}
+		}
+	}
+
+	p.DNSProviders = r.CSV("PUBLICIP_DNS_PROVIDERS")
+
+	// Retro-compatibility
+	for i, provider := range p.DNSProviders {
+		if provider == "google" {
+			warner.Warnf("dns provider google will be ignored " +
+				"since it is no longer supported, " +
+				"see https://github.com/qdm12/ddns-updater/issues/492")
+			p.DNSProviders[i] = p.DNSProviders[len(p.DNSProviders)-1]
+			p.DNSProviders = p.DNSProviders[:len(p.DNSProviders)-1]
+		}
+	}
+
+	p.DNSTimeout, err = r.Duration("PUBLICIP_DNS_TIMEOUT")
+	if err != nil {
+		return err
+	}
+
+	return nil
+}
+
+var ErrFetcherNotValid = errors.New("fetcher is not valid")
+
+func getFetchers(reader *reader.Reader) (http, dns *bool, err error) {
+	// TODO change to use reader.BoolPtr with retro-compatibility
+	s := reader.String("PUBLICIP_FETCHERS")
+	if s == "" {
+		return nil, nil, nil
+	}
+
+	http, dns = new(bool), new(bool)
+	fields := strings.Split(s, ",")
+	for i, field := range fields {
+		switch strings.ToLower(field) {
+		case "all":
+			*http = true
+			*dns = true
+		case "http":
+			*http = true
+		case "dns":
+			*dns = true
+		default:
+			return nil, nil, fmt.Errorf(
+				"%w: %q at position %d of %d",
+				ErrFetcherNotValid, field, i+1, len(fields))
+		}
+	}
+
+	return http, dns, nil
+}
+
+func handleRetroProvider(provider string) (updatedProvider string) {
+	switch provider {
+	case "ipify6":
+		return "ipify"
+	case "noip4", "noip6", "noip8245_4", "noip8245_6":
+		return "noip"
+	case "cycle":
+		return "all"
+	default:
+		return provider
+	}
 }

internal/config/resolver.go

@@ -1,27 +1,80 @@
 package config
 
 import (
+	"errors"
 	"fmt"
-	"os"
+	"net"
 	"time"
 
-	"github.com/qdm12/ddns-updater/internal/resolver"
+	"github.com/qdm12/gosettings"
+	"github.com/qdm12/gosettings/reader"
+	"github.com/qdm12/gotree"
 )
 
-func readResolver() (settings resolver.Settings, err error) {
-	address := os.Getenv("RESOLVER_ADDRESS")
-	if address != "" {
-		settings.Address = &address
-	}
-
-	timeoutString := os.Getenv("RESOLVER_TIMEOUT")
-	if timeoutString != "" {
-		timeout, err := time.ParseDuration(timeoutString)
-		if err != nil {
-			return settings, fmt.Errorf("environment variable RESOLVER_TIMEOUT: %w", err)
-		}
-		settings.Timeout = timeout
-	}
-
-	return settings, nil
+type Resolver struct {
+	Address *string
+	Timeout time.Duration
+}
+
+func (r *Resolver) setDefaults() {
+	r.Address = gosettings.DefaultPointer(r.Address, "")
+	const defaultTimeout = 5 * time.Second
+	r.Timeout = gosettings.DefaultComparable(r.Timeout, defaultTimeout)
+}
+
+var (
+	ErrAddressHostEmpty = errors.New("address host is empty")
+	ErrAddressPortEmpty = errors.New("address port is empty")
+	ErrTimeoutTooLow    = errors.New("timeout is too low")
+)
+
+func (r Resolver) Validate() (err error) {
+	if *r.Address != "" {
+		host, port, err := net.SplitHostPort(*r.Address)
+		if err != nil {
+			return fmt.Errorf("splitting host and port from address: %w", err)
+		}
+
+		switch {
+		case host == "":
+			return fmt.Errorf("%w: in %s", ErrAddressHostEmpty, *r.Address)
+		case port == "":
+			return fmt.Errorf("%w: in %s", ErrAddressPortEmpty, *r.Address)
+		}
+	}
+
+	const minTimeout = 10 * time.Millisecond
+	if r.Timeout < minTimeout {
+		return fmt.Errorf("%w: %s is below the minimum %s",
+			ErrTimeoutTooLow, r.Timeout, minTimeout)
+	}
+
+	return nil
+}
+
+func (r Resolver) String() string {
+	return r.ToLinesNode().String()
+}
+
+func (r Resolver) ToLinesNode() *gotree.Node {
+	if *r.Address == "" {
+		return gotree.New("Resolver: use Go default resolver")
+	}
+
+	node := gotree.New("Resolver")
+	node.Appendf("Address: %s", *r.Address)
+	node.Appendf("Timeout: %s", r.Timeout)
+	return node
+}
+
+func (r *Resolver) read(reader *reader.Reader) (err error) {
+	r.Address = reader.Get("RESOLVER_ADDRESS")
+	if r.Address != nil { // conveniently add port 53 if not specified
+		_, port, err := net.SplitHostPort(*r.Address)
+		if err == nil && port == "" {
+			*r.Address += ":53"
+		}
+	}
+	r.Timeout, err = reader.Duration("RESOLVER_TIMEOUT")
+	return err
 }

internal/config/retrocompat.go

@@ -0,0 +1,10 @@
+package config
+
+type Warner interface {
+	Warnf(format string, a ...interface{})
+}
+
+func handleDeprecated(warner Warner, oldKey, newKey string) {
+	warner.Warnf("You are using an old environment variable %s, please change it to %s",
+		oldKey, newKey)
+}