From a78ce40b1ef8d87138ce5a53cfe64a87ded41ffa Mon Sep 17 00:00:00 2001 From: Dennis Ploeger Date: Fri, 7 Jun 2024 12:27:56 +0200 Subject: [PATCH] feat: First version --- .github/workflows/chart.yaml | 36 ++++ .github/workflows/container.yaml | 90 ++++++++++ Dockerfile | 20 +++ README.md | 34 +++- cmd/cloudflare-ddns-update.go | 44 +++++ go.mod | 47 ++++++ go.sum | 158 ++++++++++++++++++ .../cloudflare-ddns-update/.helmignore | 23 +++ helm-charts/cloudflare-ddns-update/Chart.yaml | 11 ++ .../templates/_helpers.tpl | 62 +++++++ .../templates/deployment.yaml | 61 +++++++ .../cloudflare-ddns-update/templates/hpa.yaml | 32 ++++ .../templates/ingress.yaml | 61 +++++++ .../templates/service.yaml | 15 ++ .../templates/serviceaccount.yaml | 12 ++ .../cloudflare-ddns-update/values.yaml | 82 +++++++++ internal/logger.go | 22 +++ pkg/api.go | 115 +++++++++++++ 18 files changed, 924 insertions(+), 1 deletion(-) create mode 100644 .github/workflows/chart.yaml create mode 100644 .github/workflows/container.yaml create mode 100644 Dockerfile create mode 100644 cmd/cloudflare-ddns-update.go create mode 100644 go.mod create mode 100644 go.sum create mode 100644 helm-charts/cloudflare-ddns-update/.helmignore create mode 100644 helm-charts/cloudflare-ddns-update/Chart.yaml create mode 100644 helm-charts/cloudflare-ddns-update/templates/_helpers.tpl create mode 100644 helm-charts/cloudflare-ddns-update/templates/deployment.yaml create mode 100644 helm-charts/cloudflare-ddns-update/templates/hpa.yaml create mode 100644 helm-charts/cloudflare-ddns-update/templates/ingress.yaml create mode 100644 helm-charts/cloudflare-ddns-update/templates/service.yaml create mode 100644 helm-charts/cloudflare-ddns-update/templates/serviceaccount.yaml create mode 100644 helm-charts/cloudflare-ddns-update/values.yaml create mode 100644 internal/logger.go create mode 100644 pkg/api.go diff --git a/.github/workflows/chart.yaml b/.github/workflows/chart.yaml new file mode 100644 index 0000000..57f97f4 --- /dev/null +++ b/.github/workflows/chart.yaml @@ -0,0 +1,36 @@ +name: Release Charts + +on: + push: + branches: + - main + paths: + - helm-charts/** + +jobs: + release: + # depending on default permission settings for your org (contents being read-only or read-write for workloads), you will have to add permissions + # see: https://docs.github.com/en/actions/security-guides/automatic-token-authentication#modifying-the-permissions-for-the-github_token + permissions: + contents: write + runs-on: ubuntu-latest + steps: + - name: Checkout + uses: actions/checkout@v3 + with: + fetch-depth: 0 + + - name: Configure Git + run: | + git config user.name "$GITHUB_ACTOR" + git config user.email "$GITHUB_ACTOR@users.noreply.github.com" + + - name: Install Helm + uses: azure/setup-helm@v4 + env: + GITHUB_TOKEN: "${{ secrets.GITHUB_TOKEN }}" + + - name: Run chart-releaser + uses: helm/chart-releaser-action@v1.6.0 + env: + CR_TOKEN: "${{ secrets.GITHUB_TOKEN }}" \ No newline at end of file diff --git a/.github/workflows/container.yaml b/.github/workflows/container.yaml new file mode 100644 index 0000000..fd747b6 --- /dev/null +++ b/.github/workflows/container.yaml @@ -0,0 +1,90 @@ +name: Container + +on: + push: + branches: [ "main" ] + tags: [ 'v*.*.*' ] + pull_request: + branches: [ "main" ] + +env: + # Use docker.io for Docker Hub if empty + REGISTRY: ghcr.io + # github.repository as / + IMAGE_NAME: ${{ github.repository }} + + +jobs: + build: + + runs-on: ubuntu-latest + permissions: + contents: read + packages: write + # This is used to complete the identity challenge + # with sigstore/fulcio when running outside of PRs. + id-token: write + + steps: + - name: Checkout repository + uses: actions/checkout@v4 + + # Install the cosign tool except on PR + # https://github.com/sigstore/cosign-installer + - name: Install cosign + if: github.event_name != 'pull_request' + uses: sigstore/cosign-installer@59acb6260d9c0ba8f4a2f9d9b48431a222b68e20 #v3.5.0 + with: + cosign-release: 'v2.2.4' + + # Set up BuildKit Docker container builder to be able to build + # multi-platform images and export cache + # https://github.com/docker/setup-buildx-action + - name: Set up Docker Buildx + uses: docker/setup-buildx-action@f95db51fddba0c2d1ec667646a06c2ce06100226 # v3.0.0 + + # Login against a Docker registry except on PR + # https://github.com/docker/login-action + - name: Log into registry ${{ env.REGISTRY }} + if: github.event_name != 'pull_request' + uses: docker/login-action@343f7c4344506bcbf9b4de18042ae17996df046d # v3.0.0 + with: + registry: ${{ env.REGISTRY }} + username: ${{ github.actor }} + password: ${{ secrets.GITHUB_TOKEN }} + + # Extract metadata (tags, labels) for Docker + # https://github.com/docker/metadata-action + - name: Extract Docker metadata + id: meta + uses: docker/metadata-action@96383f45573cb7f253c731d3b3ab81c87ef81934 # v5.0.0 + with: + images: ${{ env.REGISTRY }}/${{ env.IMAGE_NAME }} + + # Build and push Docker image with Buildx (don't push on PR) + # https://github.com/docker/build-push-action + - name: Build and push Docker image + id: build-and-push + uses: docker/build-push-action@0565240e2d4ab88bba5387d719585280857ece09 # v5.0.0 + with: + context: . + push: ${{ github.event_name != 'pull_request' }} + tags: ${{ steps.meta.outputs.tags }} + labels: ${{ steps.meta.outputs.labels }} + cache-from: type=gha + cache-to: type=gha,mode=max + + # Sign the resulting Docker image digest except on PRs. + # This will only write to the public Rekor transparency log when the Docker + # repository is public to avoid leaking data. If you would like to publish + # transparency data even for private images, pass --force to cosign below. + # https://github.com/sigstore/cosign + - name: Sign the published Docker image + if: ${{ github.event_name != 'pull_request' }} + env: + # https://docs.github.com/en/actions/security-guides/security-hardening-for-github-actions#using-an-intermediate-environment-variable + TAGS: ${{ steps.meta.outputs.tags }} + DIGEST: ${{ steps.build-and-push.outputs.digest }} + # This step uses the identity token to provision an ephemeral certificate + # against the sigstore community Fulcio instance. + run: echo "${TAGS}" | xargs -I {} cosign sign --yes {}@${DIGEST} diff --git a/Dockerfile b/Dockerfile new file mode 100644 index 0000000..feb1a2f --- /dev/null +++ b/Dockerfile @@ -0,0 +1,20 @@ +FROM golang:1.22-alpine as builder + +COPY . /app +WORKDIR /app +RUN GOOS=linux go build cmd/cloudflare-ddns-update.go + +FROM golang:1.22-alpine + +COPY --from=builder /app/cloudflare-ddns-update / + +ENTRYPOINT ["/cloudflare-ddns-update"] + +LABEL io.artifacthub.package.readme-url=https://github.com/dploeger/cloudflare-ddns-update +LABEL org.opencontainers.image.created=2024-06-06 +LABEL org.opencontainers.image.description="Dyn API to update Cloudflare DNS records" +LABEL org.opencontainers.image.documentation=https://github.com/dploeger/cloudflare-ddns-update +LABEL org.opencontainers.image.source=https://github.com/dploeger/cloudflare-ddns-update +LABEL org.opencontainers.image.title="cloudflare-ddns-update" +LABEL org.opencontainers.image.url=https://github.com/dploeger/cloudflare-ddns-update +LABEL org.opencontainers.image.vendor="Dennis Plöger" diff --git a/README.md b/README.md index c25a42b..269c2e3 100644 --- a/README.md +++ b/README.md @@ -1 +1,33 @@ -# cloudflare-ddns-update \ No newline at end of file +# cloudflare-ddns-update - Dyn v3 API that manages DNS entries in cloudflare + +## Introduction + +The [Dyn v3 API](https://help.dyn.com/remote-access-api/perform-update/) to update dynamic DNS records is used in +multiple routers on the market. This tool allows to provide this API while managing the dynamic DNS records in cloudflare. + +## Configuration + +The tool requires the following environment variables to be set: + +* CLOUDFLARE_API_TOKEN: The API token used to authenticate against the cloudflare API +* CLOUDFLARE_ZONE: The name of the DNS zone to manage +* AUTH_USERNAME: A username that is required to be used for the Dyn API +* AUTH_PASSWORD: A password that is required to be used for the Dyn API + +Optionally, DEBUG can be set to anything to enable logging of cloudflare requests and responses. + +## Usage + +After setting the environment variables, simply run the tool + + ./cloudflare-ddns-update + +## Container image / Docker + +This is also available as a container image, e.g. via Docker: + + docker run -e CLOUDFLARE_API_TOKEN=secret -e CLOUDFLARE_ZONE=example.com -e AUTH_USERNAME=testuser -e AUTH_PASSWORD=secret ghcr.io/dploeger/cloudflare-ddns-update:latest + +## Helm chart + +TODO \ No newline at end of file diff --git a/cmd/cloudflare-ddns-update.go b/cmd/cloudflare-ddns-update.go new file mode 100644 index 0000000..905bd36 --- /dev/null +++ b/cmd/cloudflare-ddns-update.go @@ -0,0 +1,44 @@ +package main + +import ( + "github.com/dploeger/cloudflare-ddns-update/pkg" + "github.com/gin-gonic/gin" + "log" + "os" +) + +func main() { + _, isDebug := os.LookupEnv("DEBUG") + + if _, ok := os.LookupEnv("CLOUDFLARE_API_TOKEN"); !ok { + log.Fatalf("Missing CLOUDFLARE_API_TOKEN env variable") + } + if _, ok := os.LookupEnv("CLOUDFLARE_ZONE"); !ok { + log.Fatalf("Missing CLOUDFLARE_ZONE env variable") + } + if _, ok := os.LookupEnv("AUTH_USERNAME"); !ok { + log.Fatalf("Missing AUTH_USERNAME env variable") + } + if _, ok := os.LookupEnv("AUTH_PASSWORD"); !ok { + log.Fatalf("Missing AUTH_USERNAME env variable") + } + + var api pkg.API + if a, err := pkg.NewAPI(os.Getenv("CLOUDFLARE_API_TOKEN"), os.Getenv("CLOUDFLARE_ZONE"), isDebug); err != nil { + log.Fatalf(err.Error()) + } else { + api = *a + } + + r := gin.Default() + r.GET("/health", func(c *gin.Context) { + c.JSON(200, gin.H{ + "status": "running", + }) + }) + v3 := r.Group("v3", gin.BasicAuth(gin.Accounts{os.Getenv("AUTH_USERNAME"): os.Getenv("AUTH_PASSWORD")})) + v3.GET("/update", api.DDNSUpdate) + if err := r.Run(); err != nil { + log.Fatalf("Can not run service: %s", err) + } +} diff --git a/go.mod b/go.mod new file mode 100644 index 0000000..c42ce6d --- /dev/null +++ b/go.mod @@ -0,0 +1,47 @@ +module github.com/dploeger/cloudflare-ddns-update + +go 1.22.0 + +require ( + github.com/cloudflare/cloudflare-go/v2 v2.2.0 + github.com/gin-gonic/gin v1.10.0 +) + +require ( + github.com/bytedance/sonic v1.11.6 // indirect + github.com/bytedance/sonic/loader v0.1.1 // indirect + github.com/chenzhuoyu/base64x v0.0.0-20221115062448-fe3a3abad311 // indirect + github.com/cloudwego/base64x v0.1.4 // indirect + github.com/cloudwego/iasm v0.2.0 // indirect + github.com/gabriel-vasile/mimetype v1.4.3 // indirect + github.com/gin-contrib/sse v0.1.0 // indirect + github.com/go-playground/locales v0.14.1 // indirect + github.com/go-playground/universal-translator v0.18.1 // indirect + github.com/go-playground/validator/v10 v10.20.0 // indirect + github.com/goccy/go-json v0.10.2 // indirect + github.com/google/go-cmp v0.5.8 // indirect + github.com/json-iterator/go v1.1.12 // indirect + github.com/klauspost/cpuid/v2 v2.2.7 // indirect + github.com/kr/pretty v0.3.0 // indirect + github.com/leodido/go-urn v1.4.0 // indirect + github.com/mattn/go-isatty v0.0.20 // indirect + github.com/modern-go/concurrent v0.0.0-20180306012644-bacd9c7ef1dd // indirect + github.com/modern-go/reflect2 v1.0.2 // indirect + github.com/pelletier/go-toml/v2 v2.2.2 // indirect + github.com/rogpeppe/go-internal v1.8.1 // indirect + github.com/stretchr/testify v1.9.0 // indirect + github.com/tidwall/gjson v1.14.4 // indirect + github.com/tidwall/match v1.1.1 // indirect + github.com/tidwall/pretty v1.2.1 // indirect + github.com/tidwall/sjson v1.2.5 // indirect + github.com/twitchyliquid64/golang-asm v0.15.1 // indirect + github.com/ugorji/go/codec v1.2.12 // indirect + golang.org/x/arch v0.8.0 // indirect + golang.org/x/crypto v0.23.0 // indirect + golang.org/x/net v0.25.0 // indirect + golang.org/x/sys v0.20.0 // indirect + golang.org/x/text v0.15.0 // indirect + google.golang.org/protobuf v1.34.1 // indirect + gopkg.in/check.v1 v1.0.0-20201130134442-10cb98267c6c // indirect + gopkg.in/yaml.v3 v3.0.1 // indirect +) diff --git a/go.sum b/go.sum new file mode 100644 index 0000000..80ce271 --- /dev/null +++ b/go.sum @@ -0,0 +1,158 @@ +github.com/bytedance/sonic v1.5.0/go.mod h1:ED5hyg4y6t3/9Ku1R6dU/4KyJ48DZ4jPhfY1O2AihPM= +github.com/bytedance/sonic v1.9.1 h1:6iJ6NqdoxCDr6mbY8h18oSO+cShGSMRGCEo7F2h0x8s= +github.com/bytedance/sonic v1.9.1/go.mod h1:i736AoUSYt75HyZLoJW9ERYxcy6eaN6h4BZXU064P/U= +github.com/bytedance/sonic v1.11.6 h1:oUp34TzMlL+OY1OUWxHqsdkgC/Zfc85zGqw9siXjrc0= +github.com/bytedance/sonic v1.11.6/go.mod 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a/helm-charts/cloudflare-ddns-update/.helmignore b/helm-charts/cloudflare-ddns-update/.helmignore new file mode 100644 index 0000000..0e8a0eb --- /dev/null +++ b/helm-charts/cloudflare-ddns-update/.helmignore @@ -0,0 +1,23 @@ +# Patterns to ignore when building packages. +# This supports shell glob matching, relative path matching, and +# negation (prefixed with !). Only one pattern per line. +.DS_Store +# Common VCS dirs +.git/ +.gitignore +.bzr/ +.bzrignore +.hg/ +.hgignore +.svn/ +# Common backup files +*.swp +*.bak +*.tmp +*.orig +*~ +# Various IDEs +.project +.idea/ +*.tmproj +.vscode/ diff --git a/helm-charts/cloudflare-ddns-update/Chart.yaml b/helm-charts/cloudflare-ddns-update/Chart.yaml new file mode 100644 index 0000000..46744cf --- /dev/null +++ b/helm-charts/cloudflare-ddns-update/Chart.yaml @@ -0,0 +1,11 @@ +apiVersion: v2 +name: cloudflare-ddns-update +description: A Helm chart to provide a Dyn v3 API to manage records in cloudflare +type: application +version: 0.1.0 +appVersion: "0.1.0" +annotations: + artifacthub.io/category: "networking" + artifacthub.io/changes: | + - kind: "added" + description: "First public version" diff --git a/helm-charts/cloudflare-ddns-update/templates/_helpers.tpl b/helm-charts/cloudflare-ddns-update/templates/_helpers.tpl new file mode 100644 index 0000000..f3ffa9d --- /dev/null +++ b/helm-charts/cloudflare-ddns-update/templates/_helpers.tpl @@ -0,0 +1,62 @@ +{{/* +Expand the name of the chart. +*/}} +{{- define "cloudflare-ddns-update.name" -}} +{{- default .Chart.Name .Values.nameOverride | trunc 63 | trimSuffix "-" }} +{{- end }} + +{{/* +Create a default fully qualified app name. +We truncate at 63 chars because some Kubernetes name fields are limited to this (by the DNS naming spec). +If release name contains chart name it will be used as a full name. +*/}} +{{- define "cloudflare-ddns-update.fullname" -}} +{{- if .Values.fullnameOverride }} +{{- .Values.fullnameOverride | trunc 63 | trimSuffix "-" }} +{{- else }} +{{- $name := default .Chart.Name .Values.nameOverride }} +{{- if contains $name .Release.Name }} +{{- .Release.Name | trunc 63 | trimSuffix "-" }} +{{- else }} +{{- printf "%s-%s" .Release.Name $name | trunc 63 | trimSuffix "-" }} +{{- end }} +{{- end }} +{{- end }} + +{{/* +Create chart name and version as used by the chart label. +*/}} +{{- define "cloudflare-ddns-update.chart" -}} +{{- printf "%s-%s" .Chart.Name .Chart.Version | replace "+" "_" | trunc 63 | trimSuffix "-" }} +{{- end }} + +{{/* +Common labels +*/}} +{{- define "cloudflare-ddns-update.labels" -}} +helm.sh/chart: {{ include "cloudflare-ddns-update.chart" . }} +{{ include "cloudflare-ddns-update.selectorLabels" . }} +{{- if .Chart.AppVersion }} +app.kubernetes.io/version: {{ .Chart.AppVersion | quote }} +{{- end }} +app.kubernetes.io/managed-by: {{ .Release.Service }} +{{- end }} + +{{/* +Selector labels +*/}} +{{- define "cloudflare-ddns-update.selectorLabels" -}} +app.kubernetes.io/name: {{ include "cloudflare-ddns-update.name" . }} +app.kubernetes.io/instance: {{ .Release.Name }} +{{- end }} + +{{/* +Create the name of the service account to use +*/}} +{{- define "cloudflare-ddns-update.serviceAccountName" -}} +{{- if .Values.serviceAccount.create }} +{{- default (include "cloudflare-ddns-update.fullname" .) .Values.serviceAccount.name }} +{{- else }} +{{- default "default" .Values.serviceAccount.name }} +{{- end }} +{{- end }} diff --git a/helm-charts/cloudflare-ddns-update/templates/deployment.yaml b/helm-charts/cloudflare-ddns-update/templates/deployment.yaml new file mode 100644 index 0000000..fc67a49 --- /dev/null +++ b/helm-charts/cloudflare-ddns-update/templates/deployment.yaml @@ -0,0 +1,61 @@ +apiVersion: apps/v1 +kind: Deployment +metadata: + name: {{ include "cloudflare-ddns-update.fullname" . }} + labels: + {{- include "cloudflare-ddns-update.labels" . | nindent 4 }} +spec: + {{- if not .Values.autoscaling.enabled }} + replicas: {{ .Values.replicaCount }} + {{- end }} + selector: + matchLabels: + {{- include "cloudflare-ddns-update.selectorLabels" . | nindent 6 }} + template: + metadata: + {{- with .Values.podAnnotations }} + annotations: + {{- toYaml . | nindent 8 }} + {{- end }} + labels: + {{- include "cloudflare-ddns-update.selectorLabels" . | nindent 8 }} + spec: + {{- with .Values.imagePullSecrets }} + imagePullSecrets: + {{- toYaml . | nindent 8 }} + {{- end }} + serviceAccountName: {{ include "cloudflare-ddns-update.serviceAccountName" . }} + securityContext: + {{- toYaml .Values.podSecurityContext | nindent 8 }} + containers: + - name: {{ .Chart.Name }} + securityContext: + {{- toYaml .Values.securityContext | nindent 12 }} + image: "{{ .Values.image.repository }}:{{ .Values.image.tag | default .Chart.AppVersion }}" + imagePullPolicy: {{ .Values.image.pullPolicy }} + ports: + - name: http + containerPort: {{ .Values.service.port }} + protocol: TCP + livenessProbe: + httpGet: + path: / + port: http + readinessProbe: + httpGet: + path: / + port: http + resources: + {{- toYaml .Values.resources | nindent 12 }} + {{- with .Values.nodeSelector }} + nodeSelector: + {{- toYaml . | nindent 8 }} + {{- end }} + {{- with .Values.affinity }} + affinity: + {{- toYaml . | nindent 8 }} + {{- end }} + {{- with .Values.tolerations }} + tolerations: + {{- toYaml . | nindent 8 }} + {{- end }} diff --git a/helm-charts/cloudflare-ddns-update/templates/hpa.yaml b/helm-charts/cloudflare-ddns-update/templates/hpa.yaml new file mode 100644 index 0000000..2d5b7c8 --- /dev/null +++ b/helm-charts/cloudflare-ddns-update/templates/hpa.yaml @@ -0,0 +1,32 @@ +{{- if .Values.autoscaling.enabled }} +apiVersion: autoscaling/v2 +kind: HorizontalPodAutoscaler +metadata: + name: {{ include "cloudflare-ddns-update.fullname" . }} + labels: + {{- include "cloudflare-ddns-update.labels" . | nindent 4 }} +spec: + scaleTargetRef: + apiVersion: apps/v1 + kind: Deployment + name: {{ include "cloudflare-ddns-update.fullname" . }} + minReplicas: {{ .Values.autoscaling.minReplicas }} + maxReplicas: {{ .Values.autoscaling.maxReplicas }} + metrics: + {{- if .Values.autoscaling.targetCPUUtilizationPercentage }} + - type: Resource + resource: + name: cpu + target: + type: Utilization + averageUtilization: {{ .Values.autoscaling.targetCPUUtilizationPercentage }} + {{- end }} + {{- if .Values.autoscaling.targetMemoryUtilizationPercentage }} + - type: Resource + resource: + name: memory + target: + type: Utilization + averageUtilization: {{ .Values.autoscaling.targetMemoryUtilizationPercentage }} + {{- end }} +{{- end }} diff --git a/helm-charts/cloudflare-ddns-update/templates/ingress.yaml b/helm-charts/cloudflare-ddns-update/templates/ingress.yaml new file mode 100644 index 0000000..f785d4a --- /dev/null +++ b/helm-charts/cloudflare-ddns-update/templates/ingress.yaml @@ -0,0 +1,61 @@ +{{- if .Values.ingress.enabled -}} +{{- $fullName := include "cloudflare-ddns-update.fullname" . -}} +{{- $svcPort := .Values.service.port -}} +{{- if and .Values.ingress.className (not (semverCompare ">=1.18-0" .Capabilities.KubeVersion.GitVersion)) }} + {{- if not (hasKey .Values.ingress.annotations "kubernetes.io/ingress.class") }} + {{- $_ := set .Values.ingress.annotations "kubernetes.io/ingress.class" .Values.ingress.className}} + {{- end }} +{{- end }} +{{- if semverCompare ">=1.19-0" .Capabilities.KubeVersion.GitVersion -}} +apiVersion: networking.k8s.io/v1 +{{- else if semverCompare ">=1.14-0" .Capabilities.KubeVersion.GitVersion -}} +apiVersion: networking.k8s.io/v1beta1 +{{- else -}} +apiVersion: extensions/v1beta1 +{{- end }} +kind: Ingress +metadata: + name: {{ $fullName }} + labels: + {{- include "cloudflare-ddns-update.labels" . | nindent 4 }} + {{- with .Values.ingress.annotations }} + annotations: + {{- toYaml . | nindent 4 }} + {{- end }} +spec: + {{- if and .Values.ingress.className (semverCompare ">=1.18-0" .Capabilities.KubeVersion.GitVersion) }} + ingressClassName: {{ .Values.ingress.className }} + {{- end }} + {{- if .Values.ingress.tls }} + tls: + {{- range .Values.ingress.tls }} + - hosts: + {{- range .hosts }} + - {{ . | quote }} + {{- end }} + secretName: {{ .secretName }} + {{- end }} + {{- end }} + rules: + {{- range .Values.ingress.hosts }} + - host: {{ .host | quote }} + http: + paths: + {{- range .paths }} + - path: {{ .path }} + {{- if and .pathType (semverCompare ">=1.18-0" $.Capabilities.KubeVersion.GitVersion) }} + pathType: {{ .pathType }} + {{- end }} + backend: + {{- if semverCompare ">=1.19-0" $.Capabilities.KubeVersion.GitVersion }} + service: + name: {{ $fullName }} + port: + number: {{ $svcPort }} + {{- else }} + serviceName: {{ $fullName }} + servicePort: {{ $svcPort }} + {{- end }} + {{- end }} + {{- end }} +{{- end }} diff --git a/helm-charts/cloudflare-ddns-update/templates/service.yaml b/helm-charts/cloudflare-ddns-update/templates/service.yaml new file mode 100644 index 0000000..3be6410 --- /dev/null +++ b/helm-charts/cloudflare-ddns-update/templates/service.yaml @@ -0,0 +1,15 @@ +apiVersion: v1 +kind: Service +metadata: + name: {{ include "cloudflare-ddns-update.fullname" . }} + labels: + {{- include "cloudflare-ddns-update.labels" . | nindent 4 }} +spec: + type: {{ .Values.service.type }} + ports: + - port: {{ .Values.service.port }} + targetPort: http + protocol: TCP + name: http + selector: + {{- include "cloudflare-ddns-update.selectorLabels" . | nindent 4 }} diff --git a/helm-charts/cloudflare-ddns-update/templates/serviceaccount.yaml b/helm-charts/cloudflare-ddns-update/templates/serviceaccount.yaml new file mode 100644 index 0000000..94efb5c --- /dev/null +++ b/helm-charts/cloudflare-ddns-update/templates/serviceaccount.yaml @@ -0,0 +1,12 @@ +{{- if .Values.serviceAccount.create -}} +apiVersion: v1 +kind: ServiceAccount +metadata: + name: {{ include "cloudflare-ddns-update.serviceAccountName" . }} + labels: + {{- include "cloudflare-ddns-update.labels" . | nindent 4 }} + {{- with .Values.serviceAccount.annotations }} + annotations: + {{- toYaml . | nindent 4 }} + {{- end }} +{{- end }} diff --git a/helm-charts/cloudflare-ddns-update/values.yaml b/helm-charts/cloudflare-ddns-update/values.yaml new file mode 100644 index 0000000..83043c4 --- /dev/null +++ b/helm-charts/cloudflare-ddns-update/values.yaml @@ -0,0 +1,82 @@ +# Default values for cloudflare-ddns-update. +# This is a YAML-formatted file. +# Declare variables to be passed into your templates. + +replicaCount: 1 + +image: + repository: ghcr.io/dploeger/cloudflare-ddns-update + pullPolicy: IfNotPresent + # Overrides the image tag whose default is the chart appVersion. + tag: "" + +imagePullSecrets: [] +nameOverride: "" +fullnameOverride: "" + +serviceAccount: + # Specifies whether a service account should be created + create: true + # Annotations to add to the service account + annotations: {} + # The name of the service account to use. + # If not set and create is true, a name is generated using the fullname template + name: "" + +podAnnotations: {} + +podSecurityContext: {} + # fsGroup: 2000 + +securityContext: {} + # capabilities: + # drop: + # - ALL + # readOnlyRootFilesystem: true + # runAsNonRoot: true + # runAsUser: 1000 + +service: + type: ClusterIP + port: 8080 + +ingress: + enabled: false + className: "" + annotations: {} + # kubernetes.io/ingress.class: nginx + # kubernetes.io/tls-acme: "true" + hosts: + - host: chart-example.local + paths: + - path: / + pathType: ImplementationSpecific + tls: [] + # - secretName: chart-example-tls + # hosts: + # - chart-example.local + +resources: {} + # We usually recommend not to specify default resources and to leave this as a conscious + # choice for the user. This also increases chances charts run on environments with little + # resources, such as Minikube. If you do want to specify resources, uncomment the following + # lines, adjust them as necessary, and remove the curly braces after 'resources:'. + # limits: + # cpu: 100m + # memory: 128Mi + # requests: + # cpu: 100m + # memory: 128Mi + +autoscaling: + enabled: false + minReplicas: 1 + maxReplicas: 100 + targetCPUUtilizationPercentage: 80 + # targetMemoryUtilizationPercentage: 80 + +nodeSelector: {} + +tolerations: [] + +affinity: {} diff --git a/internal/logger.go b/internal/logger.go new file mode 100644 index 0000000..4e22871 --- /dev/null +++ b/internal/logger.go @@ -0,0 +1,22 @@ +// Package internal includes internal tools used by cloudflare-ddns-update +package internal + +import ( + "github.com/cloudflare/cloudflare-go/v2/option" + "log" + "net/http" +) + +// RequestResponseLogger is a cloudflare debug logging middleware +func RequestResponseLogger(req *http.Request, next option.MiddlewareNext) (res *http.Response, err error) { + // Before the request + log.Println(req) + + // Forward the request to the next handler + res, err = next(req) + + // Handle stuff after the request + log.Println(res, err) + + return res, err +} diff --git a/pkg/api.go b/pkg/api.go new file mode 100644 index 0000000..d8d0186 --- /dev/null +++ b/pkg/api.go @@ -0,0 +1,115 @@ +// Package pkg includes the publicly available API for cloudflare-ddns-update +package pkg + +import ( + "context" + "fmt" + "github.com/cloudflare/cloudflare-go/v2" + "github.com/cloudflare/cloudflare-go/v2/dns" + "github.com/cloudflare/cloudflare-go/v2/option" + "github.com/cloudflare/cloudflare-go/v2/zones" + "github.com/dploeger/cloudflare-ddns-update/internal" + "github.com/gin-gonic/gin" + "net/netip" +) + +// The API includes all available endpoints +type API struct { + // cfClient is the currently used cloudflare client + cfClient *cloudflare.Client + // zoneID is the id where the records are managed in + zoneID string +} + +// NewAPI creates a new API variable. apiToken is used for authentication to cloudflare and debug enables the +// request/response logger +func NewAPI(apiToken string, zoneName string, debug bool) (*API, error) { + options := []option.RequestOption{option.WithAPIToken(apiToken)} + if debug { + options = append(options, option.WithMiddleware(internal.RequestResponseLogger)) + } + a := API{ + cfClient: cloudflare.NewClient(options...), + } + + z := a.cfClient.Zones.ListAutoPaging(context.Background(), zones.ZoneListParams{Name: cloudflare.F(zoneName)}) + if z.Err() != nil { + return &a, fmt.Errorf("error getting zone ID for zone %s: %s", zoneName, z.Err()) + } + if !z.Next() { + return &a, fmt.Errorf("can't get zone ID for zone %s", zoneName) + } + a.zoneID = z.Current().ID + + return &a, nil +} + +// DDNSUpdate is based on the Dyn v3 API and should be bound to GET /v3/update +func (a API) DDNSUpdate(c *gin.Context) { + var params struct { + Hostname string `form:"hostname"` + MyIP string `form:"myip"` + } + if err := c.ShouldBind(¶ms); err != nil { + c.JSON(400, gin.H{ + "error": fmt.Sprintf("Missing query parameters: %s", err), + }) + return + } + var myIP netip.Addr + if a, err := netip.ParseAddr(params.MyIP); err != nil { + c.JSON(400, gin.H{ + "error": fmt.Sprintf("Error converting IP address: %s", err), + }) + return + } else { + myIP = a + } + + var recordType string + if r, ok := c.Params.Get("type"); !ok { + if myIP.Is6() { + recordType = "AAAA" + } else { + recordType = "A" + } + } else { + recordType = r + } + + records := a.cfClient.DNS.Records.ListAutoPaging(context.Background(), dns.RecordListParams{Name: cloudflare.F(params.Hostname), ZoneID: cloudflare.F(a.zoneID)}) + + if records.Next() { + updateParams := dns.RecordUpdateParams{ + ZoneID: cloudflare.F(a.zoneID), + Record: dns.ARecordParam{ + Name: cloudflare.F(records.Current().Name), + Type: cloudflare.F(dns.ARecordTypeA), + Content: cloudflare.F(myIP.String()), + }, + } + if _, err := a.cfClient.DNS.Records.Update(context.Background(), records.Current().ID, updateParams); err != nil { + c.JSON(500, gin.H{ + "error": fmt.Sprintf("Can't update DNS record for host %s from zone %s: %s", params.Hostname, a.zoneID, err), + }) + return + } + } else { + if recordType == "A" { + if _, err := a.cfClient.DNS.Records.New(context.Background(), dns.RecordNewParams{ + ZoneID: cloudflare.F(a.zoneID), + Record: dns.ARecordParam{ + Type: cloudflare.F(dns.ARecordTypeA), + Name: cloudflare.F(params.Hostname), + Content: cloudflare.F(myIP.String()), + }, + }); err != nil { + c.JSON(500, gin.H{ + "error": fmt.Sprintf("Can't create DNS record for host %s in zone %s: %s", params.Hostname, a.zoneID, err), + }) + return + } + } + } + c.Status(204) +}