sig-auth/main.go

package main

import (
	"bytes"
	"crypto"
	"encoding/json"
	"fmt"
	"log"
	"os"

	"crispbyte.dev/sig-auth/client"
	"github.com/opencontainers/go-digest"
	"golang.org/x/crypto/ssh"
)

func main() {
	testData := map[string]string{"hello": "world"}
	json_data, _ := json.Marshal(testData)

	keyFile := "testkey"

	key, err := loadPrivateKey(keyFile)

	if err != nil {
		log.Fatal(err)
	}

	client, err := client.GetSigningClient(key, "test-id")

	if err != nil {
		log.Fatal(err)
	}

	id := digest.FromBytes(json_data)

	req, err := http.NewRequest("POST", "http://localhost:8080/post", bytes.NewBuffer(json_data))

	if err != nil {
		log.Fatal(err)
	}

	req.Header.Add("Content-Digest", string(id.Algorithm())+"="+id.Encoded())
	req.Header.Add("Content-Type", "application/json")

	resp, err := client.Do(req)

	if err != nil {
		log.Fatal(err)
	}

	defer resp.Body.Close()

	var res map[string]interface{}

	json.NewDecoder(resp.Body).Decode(&res)

	fmt.Println(res)
}

func loadPrivateKey(keyFile string) (crypto.PrivateKey, error) {
	keyBytes, err := os.ReadFile(keyFile)

	if err != nil {
		return nil, err
	}

	return ssh.ParseRawPrivateKey(keyBytes)
}