First Commit

.github/workflows/go.yml

@@ -0,0 +1,34 @@
+# This workflow will build a golang project
+# For more information see: https://docs.github.com/en/actions/automating-builds-and-tests/building-and-testing-go
+
+name: Go
+
+on:
+  push:
+    branches: [ "main" ]
+  pull_request:
+    branches: [ "main" ]
+
+jobs:
+
+  build:
+    strategy:
+      matrix:
+        go-version: ['1.22']
+    runs-on: ubuntu-latest
+    steps:
+    - uses: actions/checkout@v4
+
+    - name: set up Go 1.x
+      uses: actions/setup-go@v5
+      with:
+        go-version: ${{ matrix.go-version }}
+
+    - name: Build
+      run: go build -v ./...
+
+    - name: Test
+      run: go test -race -coverprofile=coverage.txt -covermode=atomic ./...
+
+    - name: golangci-lint
+      uses: reviewdog/action-golangci-lint@v2

go.mod

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+module github.com/yadon-infra/pem-generate-cron
+
+go 1.22.3

main.go

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+package main
+
+import (
+	"crypto/rand"
+	"crypto/rsa"
+	"crypto/x509"
+	"encoding/pem"
+	"flag"
+	"log"
+	"os"
+	"path/filepath"
+)
+
+func main() {
+	dir := flag.String("dir", ".", "path of directory")
+	flag.Parse()
+
+	privateKey, err := rsa.GenerateKey(rand.Reader, 2048)
+	if err != nil {
+		log.Fatalf("Failed to generating key: %v", err)
+	}
+
+	privateKeyPEM := pem.EncodeToMemory(&pem.Block{
+		Type:  "RSA PRIVATE KEY",
+		Bytes: x509.MarshalPKCS1PrivateKey(privateKey),
+	})
+
+	if _, err := os.Stat(*dir); os.IsNotExist(err) {
+		err = os.MkdirAll(*dir, 0755)
+		if err != nil {
+			log.Fatalf("Failed to create directory: %v", err)
+		}
+	}
+
+	privateKeyPath := filepath.Join(*dir, "private-key.pem")
+
+	err = os.Remove("private-key.pem")
+	if err != nil && !os.IsNotExist(err) {
+		log.Fatalf("Failed remove old pemfile: %v", err)
+	}
+
+	err = os.WriteFile(privateKeyPath, privateKeyPEM, 0600)
+	if err != nil {
+		log.Fatalf("Failed to save privateKey to pemfile: %v", err)
+	}
+
+	log.Printf("Private key saved to %s", privateKeyPath)
+}