feat(backup): Add backup/restore to the server

api/crypto/aes_test.go

@@ -0,0 +1,131 @@
+package crypto
+
+import (
+	"io"
+	"io/ioutil"
+	"os"
+	"path/filepath"
+	"testing"
+
+	"github.com/stretchr/testify/assert"
+)
+
+func Test_encryptAndDecrypt_withTheSamePassword(t *testing.T) {
+	tmpdir, _ := os.MkdirTemp("", "encrypt")
+	defer os.RemoveAll(tmpdir)
+
+	var (
+		originFilePath    = filepath.Join(tmpdir, "origin")
+		encryptedFilePath = filepath.Join(tmpdir, "encrypted")
+		decryptedFilePath = filepath.Join(tmpdir, "decrypted")
+	)
+
+	content := []byte("content")
+	ioutil.WriteFile(originFilePath, content, 0600)
+
+	originFile, _ := os.Open(originFilePath)
+	defer originFile.Close()
+
+	encryptedFileWriter, _ := os.Create(encryptedFilePath)
+	defer encryptedFileWriter.Close()
+
+	err := AesEncrypt(originFile, encryptedFileWriter, []byte("passphrase"))
+	assert.Nil(t, err, "Failed to encrypt a file")
+	encryptedContent, err := ioutil.ReadFile(encryptedFilePath)
+	assert.Nil(t, err, "Couldn't read encrypted file")
+	assert.NotEqual(t, encryptedContent, content, "Content wasn't encrypted")
+
+	encryptedFileReader, _ := os.Open(encryptedFilePath)
+	defer encryptedFileReader.Close()
+
+	decryptedFileWriter, _ := os.Create(decryptedFilePath)
+	defer decryptedFileWriter.Close()
+
+	decryptedReader, err := AesDecrypt(encryptedFileReader, []byte("passphrase"))
+	assert.Nil(t, err, "Failed to decrypt file")
+
+	io.Copy(decryptedFileWriter, decryptedReader)
+
+	decryptedContent, _ := ioutil.ReadFile(decryptedFilePath)
+	assert.Equal(t, content, decryptedContent, "Original and decrypted content should match")
+}
+
+func Test_encryptAndDecrypt_withEmptyPassword(t *testing.T) {
+	tmpdir, _ := os.MkdirTemp("", "encrypt")
+	defer os.RemoveAll(tmpdir)
+
+	var (
+		originFilePath    = filepath.Join(tmpdir, "origin")
+		encryptedFilePath = filepath.Join(tmpdir, "encrypted")
+		decryptedFilePath = filepath.Join(tmpdir, "decrypted")
+	)
+
+	content := []byte("content")
+	ioutil.WriteFile(originFilePath, content, 0600)
+
+	originFile, _ := os.Open(originFilePath)
+	defer originFile.Close()
+
+	encryptedFileWriter, _ := os.Create(encryptedFilePath)
+	defer encryptedFileWriter.Close()
+
+	err := AesEncrypt(originFile, encryptedFileWriter, []byte(""))
+	assert.Nil(t, err, "Failed to encrypt a file")
+	encryptedContent, err := ioutil.ReadFile(encryptedFilePath)
+	assert.Nil(t, err, "Couldn't read encrypted file")
+	assert.NotEqual(t, encryptedContent, content, "Content wasn't encrypted")
+
+	encryptedFileReader, _ := os.Open(encryptedFilePath)
+	defer encryptedFileReader.Close()
+
+	decryptedFileWriter, _ := os.Create(decryptedFilePath)
+	defer decryptedFileWriter.Close()
+
+	decryptedReader, err := AesDecrypt(encryptedFileReader, []byte(""))
+	assert.Nil(t, err, "Failed to decrypt file")
+
+	io.Copy(decryptedFileWriter, decryptedReader)
+
+	decryptedContent, _ := ioutil.ReadFile(decryptedFilePath)
+	assert.Equal(t, content, decryptedContent, "Original and decrypted content should match")
+}
+
+func Test_decryptWithDifferentPassphrase_shouldProduceWrongResult(t *testing.T) {
+	tmpdir, _ := os.MkdirTemp("", "encrypt")
+	defer os.RemoveAll(tmpdir)
+
+	var (
+		originFilePath    = filepath.Join(tmpdir, "origin")
+		encryptedFilePath = filepath.Join(tmpdir, "encrypted")
+		decryptedFilePath = filepath.Join(tmpdir, "decrypted")
+	)
+
+	content := []byte("content")
+	ioutil.WriteFile(originFilePath, content, 0600)
+
+	originFile, _ := os.Open(originFilePath)
+	defer originFile.Close()
+
+	encryptedFileWriter, _ := os.Create(encryptedFilePath)
+	defer encryptedFileWriter.Close()
+
+	err := AesEncrypt(originFile, encryptedFileWriter, []byte("passphrase"))
+	assert.Nil(t, err, "Failed to encrypt a file")
+	encryptedContent, err := ioutil.ReadFile(encryptedFilePath)
+	assert.Nil(t, err, "Couldn't read encrypted file")
+	assert.NotEqual(t, encryptedContent, content, "Content wasn't encrypted")
+
+	encryptedFileReader, _ := os.Open(encryptedFilePath)
+	defer encryptedFileReader.Close()
+
+	decryptedFileWriter, _ := os.Create(decryptedFilePath)
+	defer decryptedFileWriter.Close()
+
+	decryptedReader, err := AesDecrypt(encryptedFileReader, []byte("garbage"))
+	assert.Nil(t, err, "Should allow to decrypt with wrong passphrase")
+
+	io.Copy(decryptedFileWriter, decryptedReader)
+
+	decryptedContent, _ := ioutil.ReadFile(decryptedFilePath)
+	assert.NotEqual(t, content, decryptedContent, "Original and decrypted content should NOT match")
+}