trusthook/paddle_test.go at main · eben-vranken/trusthook · GitHub

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package trusthook

import (
	"crypto/hmac"
	"crypto/sha256"
	"encoding/hex"
	"errors"
	"net/http"
	"strconv"
	"testing"
	"time"
)

func TestPaddleValidSignature(t *testing.T) {
	secret := "whsec_test"
	body := []byte(`{"id":"evt_123"}`)

	ts := strconv.FormatInt(time.Now().Unix(), 10)

	mac := hmac.New(sha256.New, []byte(secret))
	mac.Write([]byte(ts + ":" + string(body)))
	sig := hex.EncodeToString(mac.Sum(nil))

	headers := http.Header{}
	headers.Set("Paddle-Signature", "ts="+ts+";h1="+sig)

	err := Verify(Paddle, body, headers, secret)
	if err != nil {
		t.Errorf("got %v, want %v", err, nil)
	}
}

func TestPaddleMissingHeader(t *testing.T) {
	secret := "whsec_test"
	body := []byte(`{"id":"evt_123"}`)

	ts := strconv.FormatInt(time.Now().Unix(), 10)

	mac := hmac.New(sha256.New, []byte(secret))
	mac.Write([]byte(ts + ":" + string(body)))

	headers := http.Header{}

	err := Verify(Paddle, body, headers, secret)
	if !errors.Is(err, ErrMissingHeader) {
		t.Errorf("got %v, want %v", err, ErrMissingHeader)
	}
}

func TestPaddleMalformedSignature(t *testing.T) {
	secret := "whsec_test"
	body := []byte(`{"id":"evt_123"}`)

	ts := strconv.FormatInt(time.Now().Unix(), 10)

	mac := hmac.New(sha256.New, []byte(secret))
	mac.Write([]byte(ts + ":" + string(body)))

	headers := http.Header{}
	headers.Set("Paddle-Signature", "WrongSignature")

	err := Verify(Paddle, body, headers, secret)
	if !errors.Is(err, ErrMalformedSignature) {
		t.Errorf("got %v, want %v", err, ErrMalformedSignature)
	}
}

func TestPaddleSignatureMismatch(t *testing.T) {
	secret := "whsec_test"
	body := []byte(`{"id":"evt_123"}`)

	ts := strconv.FormatInt(time.Now().Unix(), 10)

	mac := hmac.New(sha256.New, []byte(secret))
	mac.Write([]byte(ts + ":" + string(body)))
	sig := hex.EncodeToString(mac.Sum(nil))

	headers := http.Header{}
	headers.Set("Paddle-Signature", "ts="+ts+";h1="+sig)

	err := Verify(Paddle, body, headers, "wrong_secret")
	if !errors.Is(err, ErrSignatureMismatch) {
		t.Errorf("got %v, want %v", err, ErrSignatureMismatch)
	}
}

func TestPaddleStaleTimestamp(t *testing.T) {
	secret := "whsec_test"
	body := []byte(`{"id":"evt_123"}`)

	ts := strconv.FormatInt(time.Now().Add(-2*time.Hour).Unix(), 10)

	mac := hmac.New(sha256.New, []byte(secret))
	mac.Write([]byte(ts + ":" + string(body)))
	sig := hex.EncodeToString(mac.Sum(nil))

	headers := http.Header{}
	headers.Set("Paddle-Signature", "ts="+ts+";h1="+sig)

	err := Verify(Paddle, body, headers, secret)
	if !errors.Is(err, ErrTimestampOutOfRange) {
		t.Errorf("got %v, want %v", err, ErrTimestampOutOfRange)
	}
}

func TestPaddleNonNumericTimestamp(t *testing.T) {
	secret := "whsec_test"
	body := []byte(`{"id":"evt_123"}`)

	ts := strconv.FormatInt(time.Now().Unix(), 10)

	mac := hmac.New(sha256.New, []byte(secret))
	mac.Write([]byte(ts + ":" + string(body)))
	sig := hex.EncodeToString(mac.Sum(nil))

	headers := http.Header{}
	headers.Set("Paddle-Signature", "ts="+"NotANumber"+";h1="+sig)

	err := Verify(Paddle, body, headers, secret)
	if !errors.Is(err, ErrMalformedSignature) {
		t.Errorf("got %v, want %v", err, ErrMalformedSignature)
	}
}

func TestPaddleMissingH1(t *testing.T) {
	secret := "whsec_test"
	body := []byte(`{"id":"evt_123"}`)

	ts := strconv.FormatInt(time.Now().Unix(), 10)

	mac := hmac.New(sha256.New, []byte(secret))
	mac.Write([]byte(ts + "." + string(body)))

	headers := http.Header{}
	headers.Set("Paddle-Signature", "ts="+ts)

	err := Verify(Paddle, body, headers, secret)
	if !errors.Is(err, ErrMalformedSignature) {
		t.Errorf("got %v, want %v", err, ErrMalformedSignature)
	}
}

func TestPaddleInvalidHexSignature(t *testing.T) {
	secret := "whsec_test"
	body := []byte(`{"id":"evt_123"}`)

	ts := strconv.FormatInt(time.Now().Unix(), 10)

	mac := hmac.New(sha256.New, []byte(secret))
	mac.Write([]byte(ts + ":" + string(body)))

	headers := http.Header{}
	headers.Set("Paddle-Signature", "ts="+ts+";h1=!!!nothex")

	err := Verify(Paddle, body, headers, "wrong_secret")
	if !errors.Is(err, ErrMalformedSignature) {
		t.Errorf("got %v, want %v", err, ErrMalformedSignature)
	}
}