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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,96 @@ | ||
| name: Docker | ||
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| # This workflow uses actions that are not certified by GitHub. | ||
| # They are provided by a third-party and are governed by | ||
| # separate terms of service, privacy policy, and support | ||
| # documentation. | ||
|
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| on: | ||
| schedule: | ||
| - cron: '17 17 * * 5' | ||
| push: | ||
| branches: [ "main" ] | ||
| # Publish semver tags as releases. | ||
| tags: [ 'v*.*.*' ] | ||
| pull_request: | ||
| branches: [ "main" ] | ||
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|
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| env: | ||
| # Use docker.io for Docker Hub if empty | ||
| REGISTRY: ghcr.io | ||
| # github.repository as <account>/<repo> | ||
| IMAGE_NAME: ${{ github.repository }} | ||
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| jobs: | ||
| build: | ||
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| 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 | ||
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| steps: | ||
| - name: Checkout repository | ||
| uses: actions/checkout@main | ||
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| # 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 | ||
|
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||
| # 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 | ||
|
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| # 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 }} | ||
|
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| # 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 }} | ||
|
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| # 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 | ||
|
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| # 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} |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -1,7 +1,12 @@ | ||
| FROM python:3.9.6-alpine | ||
| FROM docker.io/library/golang:alpine AS builder-env | ||
| WORKDIR /app | ||
| COPY ./ /app | ||
| RUN CGO_ENABLED=0 go build ./msgsplit.go | ||
| RUN rm ./msgsplit.go | ||
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| FROM scratch | ||
| WORKDIR /app | ||
| COPY . /app | ||
| COPY --from=builder-env /app/ /app/ | ||
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| EXPOSE 8080 | ||
| CMD [ "python3", "msgsplit.py" ] | ||
| CMD [ "./msgsplit" ] |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,63 @@ | ||
| package main | ||
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| import ( | ||
| "fmt" | ||
| "os" | ||
| "net/http" | ||
| math_rand "math/rand" | ||
| ) | ||
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| func main() { | ||
| // this is a downscaled CRUD service | ||
| // Create a environment variable (max 256) for cipher | ||
| // Read AND Delete cipher | ||
| // no Update | ||
|
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| http.HandleFunc("/writeread", func(w http.ResponseWriter, r *http.Request) { | ||
| if r.Method != "POST" { | ||
| w.Header().Set("Allow", "POST") | ||
| http.Error(w, "Method Not Allowed", 405) | ||
| return | ||
| } | ||
| // prefix environment variable, to prevent reading all system environment variables | ||
| storage_key := "msgsplit_" | ||
| r.ParseForm() | ||
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| // stores _ciphertext_ on the server in env | ||
| if cipher, found := r.Form["cipher"]; found { | ||
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| if len(cipher[0]) > 256 { | ||
| http.Error(w, "Payload Too Large", 413) | ||
| } | ||
| // create unique identifier name for environment variable | ||
| storage_rand := fmt.Sprintf("%d", math_rand.Int()) // example: 6334824724549167320 | ||
| storage_key += storage_rand // example: msgsplit_6334824724549167320 | ||
| os.Setenv(storage_key, cipher[0]) | ||
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| fmt.Fprintf(w, storage_rand) // example: 6334824724549167320 | ||
| // server reads the _ciphertext_ | ||
| } else if key, found := r.Form["key"]; found { | ||
| storage_key += key[0] // example: msgsplit_6334824724549167320 | ||
| cipher, cipher_exists := os.LookupEnv(storage_key) | ||
| if !cipher_exists { | ||
| http.Error(w, "Gone", 410) | ||
| } | ||
| // delete cipher | ||
| os.Unsetenv(storage_key) // example: msgsplit_6334824724549167320 | ||
| fmt.Fprintf(w, cipher) | ||
| } else { | ||
| http.Error(w, "Not Found", 404) | ||
| } | ||
| }) | ||
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| http.Handle("/", http.FileServer(http.Dir("./"))) | ||
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| httpPort, Port_exist := os.LookupEnv("PORT") | ||
| if !Port_exist { | ||
| httpPort = "8080" | ||
| } | ||
| fmt.Println("Start msgsplit server at port " + httpPort) | ||
| http.ListenAndServe(":" + httpPort, nil) | ||
| } |
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