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-rw-r--r--pkg/service/auth.go73
-rw-r--r--pkg/service/auth_test.go33
2 files changed, 102 insertions, 4 deletions
diff --git a/pkg/service/auth.go b/pkg/service/auth.go
index 761c70b..1966e70 100644
--- a/pkg/service/auth.go
+++ b/pkg/service/auth.go
@@ -1,12 +1,18 @@
package service
import (
+ "bytes"
"context"
+ "crypto/aes"
+ "crypto/cipher"
+ "crypto/rand"
+ "encoding/gob"
+ "errors"
+ "io"
"golang.org/x/crypto/bcrypt"
"git.sr.ht/~gabrielgio/img/pkg/database/repository"
- "git.sr.ht/~gabrielgio/img/pkg/ext"
)
type AuthController struct {
@@ -42,11 +48,11 @@ func (c *AuthController) Login(ctx context.Context, username, password []byte) (
return nil, err
}
- token := &ext.Token{
+ token := &Token{
UserID: id,
Username: string(username),
}
- return ext.WriteToken(token, c.key)
+ return WriteToken(token, c.key)
}
// InitialRegister register a initial user, it will validate if there is another
@@ -75,3 +81,64 @@ func (c *AuthController) InitialRegister(ctx context.Context, username, password
return err
}
+
+type Token struct {
+ UserID uint
+ Username string
+}
+
+func ReadToken(data []byte, key []byte) (*Token, error) {
+ block, err := aes.NewCipher(key)
+ if err != nil {
+ return nil, err
+ }
+
+ aesgcm, err := cipher.NewGCM(block)
+ if err != nil {
+ panic(err.Error())
+ }
+
+ nonceSize := aesgcm.NonceSize()
+ if len(data) < nonceSize {
+ return nil, errors.New("nonce size greater than data's size")
+ }
+
+ nonce, ciphertext := data[:nonceSize], data[nonceSize:]
+ plaintext, err := aesgcm.Open(nil, nonce, ciphertext, nil)
+ if err != nil {
+ return nil, err
+ }
+
+ r := bytes.NewReader(plaintext)
+ var token Token
+ dec := gob.NewDecoder(r)
+ if err = dec.Decode(&token); err != nil {
+ return nil, err
+ }
+ return &token, nil
+}
+
+func WriteToken(token *Token, key []byte) ([]byte, error) {
+ block, err := aes.NewCipher(key)
+ if err != nil {
+ return nil, err
+ }
+
+ aesgcm, err := cipher.NewGCM(block)
+ if err != nil {
+ return nil, err
+ }
+
+ var buffer bytes.Buffer
+ enc := gob.NewEncoder(&buffer)
+ if err := enc.Encode(token); err != nil {
+ return nil, err
+ }
+ nonce := make([]byte, aesgcm.NonceSize())
+ if _, err = io.ReadFull(rand.Reader, nonce); err != nil {
+ return nil, err
+ }
+
+ ciphertext := aesgcm.Seal(nonce, nonce, buffer.Bytes(), nil)
+ return ciphertext, nil
+}
diff --git a/pkg/service/auth_test.go b/pkg/service/auth_test.go
index 35b2475..7083d0c 100644
--- a/pkg/service/auth_test.go
+++ b/pkg/service/auth_test.go
@@ -64,7 +64,7 @@ func TestInitialRegisterAndLogin(t *testing.T) {
auth, err := scene.controller.Login(scene.ctx, []byte(tc.username), tc.password)
testkit.TestFatalError(t, "Login", err)
- token, err := ext.ReadToken(auth, key)
+ token, err := ReadToken(auth, key)
testkit.TestFatalError(t, "Login", err)
testkit.TestValue(t, "Login", tc.username, token.Username)
@@ -76,3 +76,34 @@ func TestInitialRegisterAndLogin(t *testing.T) {
func remove[T any](slice []T, s int) []T {
return append(slice[:s], slice[s+1:]...)
}
+
+func TestReadWriteToken(t *testing.T) {
+ t.Parallel()
+
+ testCases := []struct {
+ name string
+ key []byte
+ token *Token
+ }{
+ {
+ name: "Normal write",
+ key: []byte("AES256Key-32Characters1234567890"),
+ token: &Token{
+ UserID: 3,
+ Username: "username",
+ },
+ },
+ }
+
+ for _, tc := range testCases {
+ t.Run(tc.name, func(t *testing.T) {
+ data, err := WriteToken(tc.token, tc.key)
+ testkit.TestFatalError(t, "WriteToken", err)
+
+ token, err := ReadToken(data, tc.key)
+ testkit.TestFatalError(t, "ReadToken", err)
+
+ testkit.TestValue(t, "ReadWriteToken", token, tc.token)
+ })
+ }
+}