github.com/mholt/acmez/v3 v3.1.2: StaticCSR

Clean-room public code sample — generation instructions

Write a brand-new, minimal, self-contained code sample in this clean-room directory.
Do not copy, paraphrase, or reference any existing project source. Work only from this spec.

A csx.json manifest scaffold already exists. Do not recreate it from memory. Preserve its case.goal, packages and symbols; fill its empty case.contract with exact assertions and correct its environment, commands and verifierAdapter for the files you generate.

Goal: verify github.com/mholt/acmez/v3.StaticCSR in pkg:golang/github.com/mholt/acmez/v3@v3.1.2
Kind: HOW

Use EXACTLY these public packages and versions:
  - pkg:golang/github.com/mholt/acmez/v3@v3.1.2
Demonstrate these symbols/APIs:
  - github.com/mholt/acmez/v3.StaticCSR

Rules:
  - One focused purpose; the smallest project that proves the goal.
  - Include a contract test (test/contract.*) that runs OFFLINE and exits 0 exactly when the goal behavior works.
  - Pin every dependency with a lockfile so resolution is reproducible.
  - No secrets, credentials, or tokens. No real URLs (only example.com or localhost). No absolute paths.
  - No personal names, emails, company names, or project identifiers of any kind.
  - No binaries and no generated output (node_modules, dist, target, venv, .git, .env).
  - Keep it under 200 files and 256KB packed.

{"case":{"caseId":"case:sha256:3e5bd7ccca31842ef5a276a5ee1f2e2b83964248e0085aafdc0e806adfc252a7","contract":["acmez.StaticCSR wraps an existing CertificateRequest into a CSRSource","CSRSource.CSR returns the wrapped CertificateRequest and nil error","acmez.StaticCSR works with context cancellation and various identifier inputs","acmez.StaticCSR handles nil CertificateRequest pointers returning nil CSR and nil error","acmez.OrderParametersFromCSR uses StaticCSR to populate OrderParameters.CSR"],"goal":"verify github.com/mholt/acmez/v3.StaticCSR in pkg:golang/github.com/mholt/acmez/v3@v3.1.2","kind":"HOW","packages":["pkg:golang/github.com/mholt/acmez/v3@v3.1.2"],"schemaVersion":1,"symbols":["github.com/mholt/acmez/v3.StaticCSR"]},"contractCommand":["go","run","./test"],"environment":{"arch":"x64","distro":"ubuntu","ecosystem":"golang","libc":"glibc","libcVersion":"2.39","os":"linux","osVersionBucket":"24","packageManager":"go","schemaVersion":1},"license":"MIT-0","packages":["pkg:golang/github.com/mholt/acmez/v3@v3.1.2"],"schemaVersion":1,"subject":"pkg:golang/github.com/mholt/acmez/v3@v3.1.2","symbols":["github.com/mholt/acmez/v3.StaticCSR"],"verifierAdapter":"golang@1"}

module sample-acmez-staticcsr

go 1.22

require github.com/mholt/acmez/v3 v3.1.2

require (
	golang.org/x/crypto v0.27.0 // indirect
	golang.org/x/net v0.29.0 // indirect
	golang.org/x/text v0.18.0 // indirect
)

github.com/mholt/acmez/v3 v3.1.2 h1:auob8J/0FhmdClQicvJvuDavgd5ezwLBfKuYmynhYzc=
github.com/mholt/acmez/v3 v3.1.2/go.mod h1:L1wOU06KKvq7tswuMDwKdcHeKpFFgkppZy/y0DFxagQ=
golang.org/x/crypto v0.27.0 h1:GXm2NjJrPaiv/h1tb2UH8QfgC/hOf/+z0p6PT8o1w7A=
golang.org/x/crypto v0.27.0/go.mod h1:1Xngt8kV6Dvbssa53Ziq6Eqn0HqbZi5Z6R0ZpwQzt70=
golang.org/x/net v0.29.0 h1:5ORfpBpCs4HzDYoodCDBbwHzdR5UrLBZ3sOnUJmFoHo=
golang.org/x/net v0.29.0/go.mod h1:gLkgy8jTGERgjzMic6DS9+SP0ajcu6Xu3Orq/SpETg0=
golang.org/x/text v0.18.0 h1:XvMDiNzPAl0jr17s6W9lcaIhGUfUORdGCNsuLmPG224=
golang.org/x/text v0.18.0/go.mod h1:BuEKDfySbSR4drPmRPG/7iBdf8hvFMuRexcpahXilzY=

package main

import (
	"context"
	"crypto/ecdsa"
	"crypto/elliptic"
	"crypto/rand"
	"fmt"

	"github.com/mholt/acmez/v3"
	"github.com/mholt/acmez/v3/acme"
)

func main() {
	privKey, err := ecdsa.GenerateKey(elliptic.P256(), rand.Reader)
	if err != nil {
		fmt.Printf("failed to generate key: %v\n", err)
		return
	}

	csr, err := acmez.NewCSR(privKey, []string{"example.com", "sub.example.com"})
	if err != nil {
		fmt.Printf("failed to generate CSR: %v\n", err)
		return
	}

	var source acmez.CSRSource = acmez.StaticCSR(csr)

	ctx := context.Background()
	identifiers := []acme.Identifier{
		{Type: "dns", Value: "example.com"},
		{Type: "dns", Value: "sub.example.com"},
	}

	retrievedCSR, err := source.CSR(ctx, identifiers)
	if err != nil {
		fmt.Printf("CSR retrieval failed: %v\n", err)
		return
	}

	fmt.Printf("StaticCSR returned CSR with %d DNS names\n", len(retrievedCSR.DNSNames))
}

{
  "schemaVersion": 1,
  "goal": "verify github.com/mholt/acmez/v3.StaticCSR in pkg:golang/github.com/mholt/acmez/v3@v3.1.2",
  "kind": "HOW",
  "packages": [
    "pkg:golang/github.com/mholt/acmez/v3@v3.1.2"
  ],
  "symbols": [
    "github.com/mholt/acmez/v3.StaticCSR"
  ]
}

package main

import (
	"context"
	"crypto/ecdsa"
	"crypto/elliptic"
	"crypto/rand"
	"fmt"
	"os"

	"github.com/mholt/acmez/v3"
	"github.com/mholt/acmez/v3/acme"
)

func main() {
	// Assertion 1: acmez.StaticCSR wraps an existing CertificateRequest into a CSRSource
	privKey, err := ecdsa.GenerateKey(elliptic.P256(), rand.Reader)
	if err != nil {
		fmt.Fprintf(os.Stderr, "FAIL: GenerateKey: %v\n", err)
		os.Exit(1)
	}

	csr, err := acmez.NewCSR(privKey, []string{"example.com", "sub.example.com", "192.0.2.1"})
	if err != nil {
		fmt.Fprintf(os.Stderr, "FAIL: NewCSR: %v\n", err)
		os.Exit(1)
	}

	var source acmez.CSRSource = acmez.StaticCSR(csr)
	if source == nil {
		fmt.Fprintf(os.Stderr, "FAIL: StaticCSR returned nil source\n")
		os.Exit(1)
	}

	// Assertion 2: CSRSource.CSR returns the wrapped CertificateRequest and nil error
	ctx := context.Background()
	identifiers := []acme.Identifier{
		{Type: "dns", Value: "example.com"},
		{Type: "dns", Value: "sub.example.com"},
		{Type: "ip", Value: "192.0.2.1"},
	}

	gotCSR, err := source.CSR(ctx, identifiers)
	if err != nil {
		fmt.Fprintf(os.Stderr, "FAIL: source.CSR returned unexpected error: %v\n", err)
		os.Exit(1)
	}
	if gotCSR != csr {
		fmt.Fprintf(os.Stderr, "FAIL: source.CSR did not return the original pointer\n")
		os.Exit(1)
	}
	if len(gotCSR.DNSNames) != 2 || gotCSR.DNSNames[0] != "example.com" {
		fmt.Fprintf(os.Stderr, "FAIL: unexpected DNSNames: %v\n", gotCSR.DNSNames)
		os.Exit(1)
	}

	// Assertion 3: acmez.StaticCSR works with context cancellation and various identifier inputs
	canceledCtx, cancel := context.WithCancel(context.Background())
	cancel()
	gotCSR2, err := source.CSR(canceledCtx, nil)
	if err != nil {
		fmt.Fprintf(os.Stderr, "FAIL: StaticCSR should return static value even with canceled context: %v\n", err)
		os.Exit(1)
	}
	if gotCSR2 != csr {
		fmt.Fprintf(os.Stderr, "FAIL: gotCSR2 mismatch\n")
		os.Exit(1)
	}

	// Assertion 4: acmez.StaticCSR handles nil CertificateRequest pointers returning nil CSR and nil error
	nilSource := acmez.StaticCSR(nil)
	nilCSR, err := nilSource.CSR(ctx, identifiers)
	if err != nil {
		fmt.Fprintf(os.Stderr, "FAIL: nil StaticCSR returned error: %v\n", err)
		os.Exit(1)
	}
	if nilCSR != nil {
		fmt.Fprintf(os.Stderr, "FAIL: nil StaticCSR returned non-nil CSR\n")
		os.Exit(1)
	}

	// Assertion 5: acmez.OrderParametersFromCSR uses StaticCSR to populate OrderParameters.CSR
	account := acme.Account{
		PrivateKey: privKey,
		Location:   "https://example.com/acme/acct/1",
		Status:     acme.StatusValid,
	}
	params, err := acmez.OrderParametersFromCSR(account, csr)
	if err != nil {
		fmt.Fprintf(os.Stderr, "FAIL: OrderParametersFromCSR: %v\n", err)
		os.Exit(1)
	}
	if params.CSR == nil {
		fmt.Fprintf(os.Stderr, "FAIL: OrderParameters.CSR is nil\n")
		os.Exit(1)
	}
	orderCSR, err := params.CSR.CSR(ctx, params.Identifiers)
	if err != nil || orderCSR != csr {
		fmt.Fprintf(os.Stderr, "FAIL: params.CSR.CSR did not return original CSR: %v\n", err)
		os.Exit(1)
	}

	fmt.Println("PASS: github.com/mholt/acmez/v3.StaticCSR contract passed")
}